]> git.ipfire.org Git - thirdparty/cups.git/blobdiff - scheduler/client.c
Remove all of the Subversion keywords from various source files.
[thirdparty/cups.git] / scheduler / client.c
index f6a446195780de515614224f81426db10de7ea77..02e5fafb8c9e2afffff519f2ffa9ff67d7f0be0f 100644 (file)
@@ -1,57 +1,30 @@
 /*
- * "$Id: client.c 7950 2008-09-17 00:21:59Z mike $"
+ * Client routines for the CUPS scheduler.
  *
- *   Client routines for the CUPS scheduler.
+ * Copyright 2007-2015 by Apple Inc.
+ * Copyright 1997-2007 by Easy Software Products, all rights reserved.
  *
- *   Copyright 2007-2010 by Apple Inc.
- *   Copyright 1997-2007 by Easy Software Products, all rights reserved.
+ * This file contains Kerberos support code, copyright 2006 by
+ * Jelmer Vernooij.
  *
- *   This file contains Kerberos support code, copyright 2006 by
- *   Jelmer Vernooij.
- *
- *   These coded instructions, statements, and computer programs are the
- *   property of Apple Inc. and are protected by Federal copyright
- *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
- *   which should have been included with this file.  If this file is
- *   file is missing or damaged, see the license at "http://www.cups.org/".
- *
- * Contents:
- *
- *   cupsdAcceptClient()    - Accept a new client.
- *   cupsdCloseAllClients() - Close all remote clients immediately.
- *   cupsdCloseClient()     - Close a remote client.
- *   cupsdFlushHeader()     - Flush the header fields to the client.
- *   cupsdReadClient()      - Read data from a client.
- *   cupsdSendCommand()     - Send output from a command via HTTP.
- *   cupsdSendError()       - Send an error message via HTTP.
- *   cupsdSendHeader()      - Send an HTTP request.
- *   cupsdUpdateCGI()       - Read status messages from CGI scripts and
- *                            programs.
- *   cupsdWriteClient()     - Write data to a client as needed.
- *   check_if_modified()    - Decode an "If-Modified-Since" line.
- *   compare_clients()      - Compare two client connections.
- *   data_ready()           - Check whether data is available from a client.
- *   encrypt_client()       - Enable encryption for the client...
- *   get_cdsa_certificate() - Get a SSL/TLS certificate from the System
- *                            keychain.
- *   get_file()             - Get a filename and state info.
- *   install_conf_file()    - Install a configuration file.
- *   is_cgi()               - Is the resource a CGI script/program?
- *   is_path_absolute()     - Is a path absolute and free of relative elements
- *                            (i.e. "..").
- *   make_certificate()     - Make a self-signed SSL/TLS certificate.
- *   pipe_command()         - Pipe the output of a command to the remote client.
- *   valid_host()           - Is the Host: field valid?
- *   write_file()           - Send a file via HTTP.
- *   write_pipe()           - Flag that data is available on the CGI pipe.
+ * These coded instructions, statements, and computer programs are the
+ * property of Apple Inc. and are protected by Federal copyright
+ * law.  Distribution and use rights are outlined in the file "LICENSE.txt"
+ * which should have been included with this file.  If this file is
+ * file is missing or damaged, see the license at "http://www.cups.org/".
  */
 
 /*
  * Include necessary headers...
  */
 
+#define _CUPS_NO_DEPRECATED
+#define _HTTP_NO_PRIVATE
 #include "cupsd.h"
 
+#ifdef __APPLE__
+#  include <libproc.h>
+#endif /* __APPLE__ */
 #ifdef HAVE_TCPD_H
 #  include <tcpd.h>
 #endif /* HAVE_TCPD_H */
@@ -65,22 +38,15 @@ static int          check_if_modified(cupsd_client_t *con,
                                          struct stat *filestats);
 static int             compare_clients(cupsd_client_t *a, cupsd_client_t *b,
                                        void *data);
-static int             data_ready(cupsd_client_t *con);
 #ifdef HAVE_SSL
-static int             encrypt_client(cupsd_client_t *con);
+static int             cupsd_start_tls(cupsd_client_t *con, http_encryption_t e);
 #endif /* HAVE_SSL */
-#ifdef HAVE_CDSASSL
-static CFArrayRef      get_cdsa_certificate(cupsd_client_t *con);
-#endif /* HAVE_CDSASSL */
 static char            *get_file(cupsd_client_t *con, struct stat *filestats,
-                                 char *filename, int len);
-static http_status_t   install_conf_file(cupsd_client_t *con);
+                                 char *filename, size_t len);
+static http_status_t   install_cupsd_conf(cupsd_client_t *con);
 static int             is_cgi(cupsd_client_t *con, const char *filename,
                               struct stat *filestats, mime_type_t *type);
 static int             is_path_absolute(const char *path);
-#ifdef HAVE_SSL
-static int             make_certificate(cupsd_client_t *con);
-#endif /* HAVE_SSL */
 static int             pipe_command(cupsd_client_t *con, int infile, int *outfile,
                                     char *command, char *options, int root);
 static int             valid_host(cupsd_client_t *con);
@@ -97,14 +63,12 @@ static void         write_pipe(cupsd_client_t *con);
 void
 cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
 {
+  const char           *hostname;      /* Hostname of client */
+  char                 name[256];      /* Hostname of client */
   int                  count;          /* Count of connections on a host */
-  int                  val;            /* Parameter value */
   cupsd_client_t       *con,           /* New client pointer */
                        *tempcon;       /* Temporary client pointer */
-  http_addrlist_t      *addrlist,      /* List of adddresses for host */
-                       *addr;          /* Current address */
   socklen_t            addrlen;        /* Length of address */
-  char                 *hostname;      /* Hostname for address */
   http_addr_t          temp;           /* Temporary address variable */
   static time_t                last_dos = 0;   /* Time of last DoS attack */
 #ifdef HAVE_TCPD_H
@@ -112,9 +76,7 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
 #endif /* HAVE_TCPD_H */
 
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "cupsdAcceptClient(lis=%p(%d)) Clients=%d",
-                  lis, lis->fd, cupsArrayCount(Clients));
+  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdAcceptClient(lis=%p(%d)) Clients=%d", lis, lis->fd, cupsArrayCount(Clients));
 
  /*
   * Make sure we don't have a full set of clients already...
@@ -156,18 +118,14 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
     return;
   }
 
-  con->http.activity = time(NULL);
-  con->file          = -1;
-  con->http.hostaddr = &(con->clientaddr);
-
  /*
   * Accept the client and get the remote address...
   */
 
-  addrlen = sizeof(http_addr_t);
+  con->number = ++ LastClientNumber;
+  con->file   = -1;
 
-  if ((con->http.fd = accept(lis->fd, (struct sockaddr *)con->http.hostaddr,
-                             &addrlen)) < 0)
+  if ((con->http = httpAcceptConnection(lis->fd, 0)) == NULL)
   {
     if (errno == ENFILE || errno == EMFILE)
       cupsdPauseListening();
@@ -179,29 +137,16 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
     return;
   }
 
-#ifdef AF_INET6
-  if (lis->address.addr.sa_family == AF_INET6)
-  {
-   /*
-    * Save the connected port number...
-    */
+ /*
+  * Save the connected address and port number...
+  */
 
-    con->http.hostaddr->ipv6.sin6_port = lis->address.ipv6.sin6_port;
+  addrlen = sizeof(con->clientaddr);
 
-   /*
-    * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
-    * can more easily use...
-    */
+  if (getsockname(httpGetFd(con->http), (struct sockaddr *)&con->clientaddr, &addrlen) || addrlen == 0)
+    con->clientaddr = lis->address;
 
-    if (con->http.hostaddr->ipv6.sin6_addr.s6_addr32[0] == 0 &&
-        con->http.hostaddr->ipv6.sin6_addr.s6_addr32[1] == 0 &&
-        ntohl(con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2]) == 0xffff)
-      con->http.hostaddr->ipv6.sin6_addr.s6_addr32[2] = 0;
-  }
-  else
-#endif /* AF_INET6 */
-  if (lis->address.addr.sa_family == AF_INET)
-    con->http.hostaddr->ipv4.sin_port = lis->address.ipv4.sin_port;
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Server address is \"%s\".", httpAddrString(&con->clientaddr, name, sizeof(name)));
 
  /*
   * Check the number of clients on the same address...
@@ -210,7 +155,7 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
   for (count = 0, tempcon = (cupsd_client_t *)cupsArrayFirst(Clients);
        tempcon;
        tempcon = (cupsd_client_t *)cupsArrayNext(Clients))
-    if (httpAddrEqual(tempcon->http.hostaddr, con->http.hostaddr))
+    if (httpAddrEqual(httpGetAddress(tempcon->http), httpGetAddress(con->http)))
     {
       count ++;
       if (count >= MaxClientsPerHost)
@@ -224,18 +169,12 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
       last_dos = time(NULL);
       cupsdLogMessage(CUPSD_LOG_WARN,
                       "Possible DoS attack - more than %d clients connecting "
-                     "from %s!",
+                     "from %s.",
                      MaxClientsPerHost,
-                     httpAddrString(con->http.hostaddr, con->http.hostname,
-                                    sizeof(con->http.hostname)));
+                     httpGetHostname(con->http, name, sizeof(name)));
     }
 
-#ifdef WIN32
-    closesocket(con->http.fd);
-#else
-    close(con->http.fd);
-#endif /* WIN32 */
-
+    httpClose(con->http);
     free(con);
     return;
   }
@@ -244,31 +183,10 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
   * Get the hostname or format the IP address as needed...
   */
 
-  if (httpAddrLocalhost(con->http.hostaddr))
-  {
-   /*
-    * Map accesses from the loopback interface to "localhost"...
-    */
-
-    strlcpy(con->http.hostname, "localhost", sizeof(con->http.hostname));
-    hostname = con->http.hostname;
-  }
+  if (HostNameLookups)
+    hostname = httpResolveHostname(con->http, NULL, 0);
   else
-  {
-   /*
-    * Map accesses from the same host to the server name.
-    */
-
-    if (HostNameLookups)
-      hostname = httpAddrLookup(con->http.hostaddr, con->http.hostname,
-                                sizeof(con->http.hostname));
-    else
-    {
-      hostname = NULL;
-      httpAddrString(con->http.hostaddr, con->http.hostname,
-                     sizeof(con->http.hostname));
-    }
-  }
+    hostname = httpGetHostname(con->http, NULL, 0);
 
   if (hostname == NULL && HostNameLookups == 2)
   {
@@ -276,15 +194,11 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
     * Can't have an unresolved IP address with double-lookups enabled...
     */
 
-#ifdef WIN32
-    closesocket(con->http.fd);
-#else
-    close(con->http.fd);
-#endif /* WIN32 */
+    httpClose(con->http);
 
-    cupsdLogMessage(CUPSD_LOG_WARN,
+    cupsdLogClient(con, CUPSD_LOG_WARN,
                     "Name lookup failed - connection from %s closed!",
-                    con->http.hostname);
+                    httpGetHostname(con->http, NULL, 0));
 
     free(con);
     return;
@@ -296,15 +210,17 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
     * Do double lookups as needed...
     */
 
-    if ((addrlist = httpAddrGetList(con->http.hostname, AF_UNSPEC, NULL))
-            != NULL)
+    http_addrlist_t    *addrlist,      /* List of addresses */
+                       *addr;          /* Current address */
+
+    if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, NULL)) != NULL)
     {
      /*
       * See if the hostname maps to the same IP address...
       */
 
       for (addr = addrlist; addr; addr = addr->next)
-        if (httpAddrEqual(con->http.hostaddr, &(addr->addr)))
+        if (httpAddrEqual(httpGetAddress(con->http), &(addr->addr)))
           break;
     }
     else
@@ -319,15 +235,11 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
       * with double-lookups enabled...
       */
 
-#ifdef WIN32
-      closesocket(con->http.fd);
-#else
-      close(con->http.fd);
-#endif /* WIN32 */
+      httpClose(con->http);
 
-      cupsdLogMessage(CUPSD_LOG_WARN,
+      cupsdLogClient(con, CUPSD_LOG_WARN,
                       "IP lookup failed - connection from %s closed!",
-                      con->http.hostname);
+                      httpGetHostname(con->http, NULL, 0));
       free(con);
       return;
     }
@@ -338,111 +250,102 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
   * See if the connection is denied by TCP wrappers...
   */
 
-  request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, con->http.fd, NULL);
+  request_init(&wrap_req, RQ_DAEMON, "cupsd", RQ_FILE, httpGetFd(con->http),
+               NULL);
   fromhost(&wrap_req);
 
   if (!hosts_access(&wrap_req))
   {
-#ifdef WIN32
-    closesocket(con->http.fd);
-#else
-    close(con->http.fd);
-#endif /* WIN32 */
+    httpClose(con->http);
 
-    cupsdLogMessage(CUPSD_LOG_WARN,
+    cupsdLogClient(con, CUPSD_LOG_WARN,
                     "Connection from %s refused by /etc/hosts.allow and "
-                   "/etc/hosts.deny rules.", con->http.hostname);
+                   "/etc/hosts.deny rules.", httpGetHostname(con->http, NULL, 0));
     free(con);
     return;
   }
 #endif /* HAVE_TCPD_H */
 
-#ifdef AF_INET6
-  if (con->http.hostaddr->addr.sa_family == AF_INET6)
-    cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv6)",
-                    con->http.fd, con->http.hostname,
-                   ntohs(con->http.hostaddr->ipv6.sin6_port));
-  else
-#endif /* AF_INET6 */
 #ifdef AF_LOCAL
-  if (con->http.hostaddr->addr.sa_family == AF_LOCAL)
-    cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s (Domain)",
-                    con->http.fd, con->http.hostname);
+  if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
+  {
+#  ifdef __APPLE__
+    socklen_t  peersize;               /* Size of peer credentials */
+    pid_t      peerpid;                /* Peer process ID */
+    char       peername[256];          /* Name of process */
+
+    peersize = sizeof(peerpid);
+    if (!getsockopt(httpGetFd(con->http), SOL_LOCAL, LOCAL_PEERPID, &peerpid,
+                    &peersize))
+    {
+      if (!proc_name((int)peerpid, peername, sizeof(peername)))
+       cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                      "Accepted from %s (Domain ???[%d])",
+                       httpGetHostname(con->http, NULL, 0), (int)peerpid);
+      else
+       cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                       "Accepted from %s (Domain %s[%d])",
+                       httpGetHostname(con->http, NULL, 0), peername, (int)peerpid);
+    }
+    else
+#  endif /* __APPLE__ */
+
+    cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s (Domain)",
+                   httpGetHostname(con->http, NULL, 0));
+  }
   else
 #endif /* AF_LOCAL */
-  cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdAcceptClient: %d from %s:%d (IPv4)",
-                  con->http.fd, con->http.hostname,
-                 ntohs(con->http.hostaddr->ipv4.sin_port));
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Accepted from %s:%d (IPv%d)",
+                 httpGetHostname(con->http, NULL, 0),
+                httpAddrPort(httpGetAddress(con->http)),
+                httpAddrFamily(httpGetAddress(con->http)) == AF_INET ? 4 : 6);
 
  /*
   * Get the local address the client connected to...
   */
 
   addrlen = sizeof(temp);
-  if (getsockname(con->http.fd, (struct sockaddr *)&temp, &addrlen))
+  if (getsockname(httpGetFd(con->http), (struct sockaddr *)&temp, &addrlen))
   {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to get local address - %s",
-                    strerror(errno));
+    cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to get local address - %s",
+                   strerror(errno));
 
-    strcpy(con->servername, "localhost");
+    strlcpy(con->servername, "localhost", sizeof(con->servername));
+    con->serverport = LocalPort;
+  }
+#ifdef AF_LOCAL
+  else if (httpAddrFamily(&temp) == AF_LOCAL)
+  {
+    strlcpy(con->servername, "localhost", sizeof(con->servername));
     con->serverport = LocalPort;
   }
+#endif /* AF_LOCAL */
   else
   {
-#ifdef AF_INET6
-    if (temp.addr.sa_family == AF_INET6)
-    {
-      if (httpAddrLocalhost(&temp))
-        strlcpy(con->servername, "localhost", sizeof(con->servername));
-      else if (HostNameLookups || RemotePort)
-        httpAddrLookup(&temp, con->servername, sizeof(con->servername));
-      else
-        httpAddrString(&temp, con->servername, sizeof(con->servername));
-
-      con->serverport = ntohs(lis->address.ipv6.sin6_port);
-    }
+    if (httpAddrLocalhost(&temp))
+      strlcpy(con->servername, "localhost", sizeof(con->servername));
+    else if (HostNameLookups)
+      httpAddrLookup(&temp, con->servername, sizeof(con->servername));
     else
-#endif /* AF_INET6 */
-    if (temp.addr.sa_family == AF_INET)
-    {
-      if (httpAddrLocalhost(&temp))
-        strlcpy(con->servername, "localhost", sizeof(con->servername));
-      else if (HostNameLookups || RemotePort)
-        httpAddrLookup(&temp, con->servername, sizeof(con->servername));
-      else
-        httpAddrString(&temp, con->servername, sizeof(con->servername));
+      httpAddrString(&temp, con->servername, sizeof(con->servername));
 
-      con->serverport = ntohs(lis->address.ipv4.sin_port);
-    }
-    else
-    {
-      strcpy(con->servername, "localhost");
-      con->serverport = LocalPort;
-    }
+    con->serverport = httpAddrPort(&(lis->address));
   }
 
-  cupsArrayAdd(Clients, con);
-
  /*
-  * Using TCP_NODELAY improves responsiveness, especially on systems with a slow
-  * loopback interface.  Since we write large buffers when sending print files
-  * and requests there shouldn't be any performance penalty for this...
+  * Add the connection to the array of active clients...
   */
 
-  val = 1;
-  setsockopt(con->http.fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
-
- /*
-  * Close this file on all execs...
-  */
-
-  fcntl(con->http.fd, F_SETFD, fcntl(con->http.fd, F_GETFD) | FD_CLOEXEC);
+  cupsArrayAdd(Clients, con);
 
  /*
   * Add the socket to the server select.
   */
 
-  cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
+  cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL,
+                 con);
+
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request.");
 
  /*
   * Temporarily suspend accept()'s until we lose a client...
@@ -456,15 +359,13 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */
   * See if we are connecting on a secure port...
   */
 
-  if (lis->encryption == HTTP_ENCRYPT_ALWAYS)
+  if (lis->encryption == HTTP_ENCRYPTION_ALWAYS)
   {
    /*
     * https connection; go secure...
     */
 
-    con->http.encryption = HTTP_ENCRYPT_ALWAYS;
-
-    if (!encrypt_client(con))
+    if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS))
       cupsdCloseClient(con);
   }
   else
@@ -483,8 +384,7 @@ cupsdCloseAllClients(void)
   cupsd_client_t       *con;           /* Current client */
 
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d",
-                  cupsArrayCount(Clients));
+  cupsdLogMessage(CUPSD_LOG_DEBUG2, "cupsdCloseAllClients() Clients=%d", cupsArrayCount(Clients));
 
   for (con = (cupsd_client_t *)cupsArrayFirst(Clients);
        con;
@@ -502,93 +402,18 @@ int                                       /* O - 1 if partial close, 0 if fully closed */
 cupsdCloseClient(cupsd_client_t *con)  /* I - Client to close */
 {
   int          partial;                /* Do partial close for SSL? */
-#ifdef HAVE_LIBSSL
-  SSL_CTX      *context;               /* Context for encryption */
-  unsigned long        error;                  /* Error code */
-#elif defined(HAVE_GNUTLS)
-  int          error;                  /* Error code */
-  gnutls_certificate_server_credentials *credentials;
-                                       /* TLS credentials */
-#  elif defined(HAVE_CDSASSL)
-#endif /* HAVE_LIBSSL */
 
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdCloseClient: %d", con->http.fd);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing connection.");
 
  /*
   * Flush pending writes before closing...
   */
 
-  httpFlushWrite(HTTP(con));
+  httpFlushWrite(con->http);
 
   partial = 0;
 
-#ifdef HAVE_SSL
- /*
-  * Shutdown encryption as needed...
-  */
-
-  if (con->http.tls)
-  {
-    partial = 1;
-
-#  ifdef HAVE_LIBSSL
-    context = SSL_get_SSL_CTX(con->http.tls);
-
-    switch (SSL_shutdown(con->http.tls))
-    {
-      case 1 :
-          cupsdLogMessage(CUPSD_LOG_DEBUG,
-                         "SSL shutdown successful!");
-         break;
-      case -1 :
-          cupsdLogMessage(CUPSD_LOG_ERROR,
-                         "Fatal error during SSL shutdown!");
-      default :
-         while ((error = ERR_get_error()) != 0)
-           cupsdLogMessage(CUPSD_LOG_ERROR, "SSL shutdown failed: %s",
-                           ERR_error_string(error, NULL));
-          break;
-    }
-
-    SSL_CTX_free(context);
-    SSL_free(con->http.tls);
-
-#  elif defined(HAVE_GNUTLS)
-    credentials = (gnutls_certificate_server_credentials *)(con->http.tls_credentials);
-
-    error = gnutls_bye(con->http.tls, GNUTLS_SHUT_WR);
-    switch (error)
-    {
-      case GNUTLS_E_SUCCESS:
-       cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "SSL shutdown successful!");
-       break;
-      default:
-       cupsdLogMessage(CUPSD_LOG_ERROR,
-                       "SSL shutdown failed: %s", gnutls_strerror(error));
-       break;
-    }
-
-    gnutls_deinit(con->http.tls);
-    gnutls_certificate_free_credentials(*credentials);
-    free(credentials);
-
-#  elif defined(HAVE_CDSASSL)
-    while (SSLClose(con->http.tls) == errSSLWouldBlock)
-      usleep(1000);
-
-    SSLDisposeContext(con->http.tls);
-
-    if (con->http.tls_credentials)
-      CFRelease(con->http.tls_credentials);
-
-#  endif /* HAVE_LIBSSL */
-
-    con->http.tls = NULL;
-  }
-#endif /* HAVE_SSL */
-
   if (con->pipe_pid != 0)
   {
    /*
@@ -611,19 +436,31 @@ cupsdCloseClient(cupsd_client_t *con)     /* I - Client to close */
   * Close the socket and clear the file from the input set for select()...
   */
 
-  if (con->http.fd >= 0)
+  if (httpGetFd(con->http) >= 0)
   {
     cupsArrayRemove(ActiveClients, con);
     cupsdSetBusyState();
 
+#ifdef HAVE_SSL
+   /*
+    * Shutdown encryption as needed...
+    */
+
+    if (httpIsEncrypted(con->http))
+      partial = 1;
+#endif /* HAVE_SSL */
+
     if (partial)
     {
      /*
       * Only do a partial close so that the encrypted client gets everything.
       */
 
-      shutdown(con->http.fd, 0);
-      cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
+      httpShutdown(con->http);
+      cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient,
+                     NULL, con);
+
+      cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for socket close.");
     }
     else
     {
@@ -631,9 +468,9 @@ cupsdCloseClient(cupsd_client_t *con)       /* I - Client to close */
       * Shut the socket down fully...
       */
 
-      cupsdRemoveSelect(con->http.fd);
-      close(con->http.fd);
-      con->http.fd = -1;
+      cupsdRemoveSelect(httpGetFd(con->http));
+      httpClose(con->http);
+      con->http = NULL;
     }
   }
 
@@ -643,13 +480,16 @@ cupsdCloseClient(cupsd_client_t *con)     /* I - Client to close */
     * Free memory...
     */
 
-    if (con->http.input_set)
-      free(con->http.input_set);
+    cupsdRemoveSelect(httpGetFd(con->http));
 
-    httpClearCookie(HTTP(con));
-    httpClearFields(HTTP(con));
+    httpClose(con->http);
+
+    if (con->filename)
+    {
+      unlink(con->filename);
+      cupsdClearString(&con->filename);
+    }
 
-    cupsdClearString(&con->filename);
     cupsdClearString(&con->command);
     cupsdClearString(&con->options);
     cupsdClearString(&con->query_string);
@@ -701,21 +541,6 @@ cupsdCloseClient(cupsd_client_t *con)      /* I - Client to close */
 }
 
 
-/*
- * 'cupsdFlushHeader()' - Flush the header fields to the client.
- */
-
-int                                    /* I - Bytes written or -1 on error */
-cupsdFlushHeader(cupsd_client_t *con)  /* I - Client to flush to */
-{
-  int bytes = httpFlushWrite(HTTP(con));
-
-  con->http.data_encoding = HTTP_ENCODE_LENGTH;
-
-  return (bytes);
-}
-
-
 /*
  * 'cupsdReadClient()' - Read data from a client.
  */
@@ -724,11 +549,8 @@ void
 cupsdReadClient(cupsd_client_t *con)   /* I - Client to read from */
 {
   char                 line[32768],    /* Line from client... */
-                       operation[64],  /* Operation code from socket */
-                       version[64],    /* HTTP version number string */
                        locale[64],     /* Locale */
                        *ptr;           /* Pointer into strings */
-  int                  major, minor;   /* HTTP version numbers */
   http_status_t                status;         /* Transfer status */
   ipp_state_t          ipp_state;      /* State of IPP transfer */
   int                  bytes;          /* Number of bytes to POST */
@@ -740,21 +562,34 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
   static unsigned      request_id = 0; /* Request ID for temp files */
 
 
-  status = HTTP_CONTINUE;
+  status = HTTP_STATUS_CONTINUE;
+
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdReadClient: error=%d, used=%d, state=%s, data_encoding=HTTP_ENCODING_%s, data_remaining=" CUPS_LLFMT ", request=%p(%s), file=%d", httpError(con->http), (int)httpGetReady(con->http), httpStateString(httpGetState(con->http)), httpIsChunked(con->http) ? "CHUNKED" : "LENGTH", CUPS_LLCAST httpGetRemaining(con->http), con->request, con->request ? ippStateString(ippGetState(con->request)) : "", con->file);
+
+  if (httpGetState(con->http) == HTTP_STATE_GET_SEND ||
+      httpGetState(con->http) == HTTP_STATE_POST_SEND ||
+      httpGetState(con->http) == HTTP_STATE_STATUS)
+  {
+   /*
+    * If we get called in the wrong state, then something went wrong with the
+    * connection and we need to shut it down...
+    */
+
+    if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1)
+    {
+     /*
+      * Connection closed...
+      */
+
+      cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF.");
+      cupsdCloseClient(con);
+      return;
+    }
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                 "cupsdReadClient(con=%p(%d)) "
-                 "con->http.error=%d "
-                 "con->http.used=%d, "
-                 "con->http.state=%d "
-                 "con->data_encoding=HTTP_ENCODE_%s, "
-                 "con->data_remaining=" CUPS_LLFMT ", "
-                 "con->file=%d",
-                 con, con->http.fd, con->http.error, con->http.used,
-                 con->http.state,
-                 con->http.data_encoding == HTTP_ENCODE_CHUNKED ?
-                     "CHUNKED" : "LENGTH",
-                 CUPS_LLCAST con->http.data_remaining, con->file);
+    cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP read state %s.", httpStateString(httpGetState(con->http)));
+    cupsdCloseClient(con);
+    return;
+  }
 
 #ifdef HAVE_SSL
   if (con->auto_ssl)
@@ -765,18 +600,16 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
 
     con->auto_ssl = 0;
 
-    if (recv(con->http.fd, buf, 1, MSG_PEEK) == 1 &&
+    if (recv(httpGetFd(con->http), buf, 1, MSG_PEEK) == 1 &&
         (!buf[0] || !strchr("DGHOPT", buf[0])))
     {
      /*
       * Encrypt this connection...
       */
 
-      cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                      "cupsdReadClient: Saw first byte %02X, auto-negotiating "
-                     "SSL/TLS session...", buf[0] & 255);
+      cupsdLogClient(con, CUPSD_LOG_DEBUG2, "Saw first byte %02X, auto-negotiating SSL/TLS session.", buf[0] & 255);
 
-      if (!encrypt_client(con))
+      if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS))
         cupsdCloseClient(con);
 
       return;
@@ -784,24 +617,26 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
   }
 #endif /* HAVE_SSL */
 
-  switch (con->http.state)
+  switch (httpGetState(con->http))
   {
-    case HTTP_WAITING :
+    case HTTP_STATE_WAITING :
        /*
         * See if we've received a request line...
        */
 
-        if (httpGets(line, sizeof(line) - 1, HTTP(con)) == NULL)
+        con->operation = httpReadRequest(con->http, con->uri, sizeof(con->uri));
+        if (con->operation == HTTP_STATE_ERROR ||
+           con->operation == HTTP_STATE_UNKNOWN_METHOD ||
+           con->operation == HTTP_STATE_UNKNOWN_VERSION)
        {
-         if (con->http.error && con->http.error != EPIPE)
-           cupsdLogMessage(CUPSD_LOG_DEBUG,
-                           "cupsdReadClient: %d WAITING Closing for error %d "
-                           "(%s)", con->http.fd, con->http.error,
-                           strerror(con->http.error));
+         if (httpError(con->http))
+           cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                          "HTTP_STATE_WAITING Closing for error %d (%s)",
+                          httpError(con->http), strerror(httpError(con->http)));
          else
-           cupsdLogMessage(CUPSD_LOG_DEBUG,
-                           "cupsdReadClient: %d WAITING Closing on EOF",
-                           con->http.fd);
+           cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                          "HTTP_STATE_WAITING Closing on error: %s",
+                          cupsLastErrorString());
 
          cupsdCloseClient(con);
          return;
@@ -811,29 +646,19 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
         * Ignore blank request lines...
        */
 
-        if (line[0] == '\0')
+        if (con->operation == HTTP_STATE_WAITING)
          break;
 
        /*
         * Clear other state variables...
        */
 
-        httpClearFields(HTTP(con));
-
-        con->http.activity        = time(NULL);
-        con->http.version         = HTTP_1_0;
-       con->http.keep_alive      = HTTP_KEEPALIVE_OFF;
-       con->http.data_encoding   = HTTP_ENCODE_LENGTH;
-       con->http.data_remaining  = 0;
-       con->http._data_remaining = 0;
-       con->operation            = HTTP_WAITING;
-       con->bytes                = 0;
-       con->file                 = -1;
-       con->file_ready           = 0;
-       con->pipe_pid             = 0;
-       con->username[0]          = '\0';
-       con->password[0]          = '\0';
-       con->uri[0]               = '\0';
+       con->bytes       = 0;
+       con->file        = -1;
+       con->file_ready  = 0;
+       con->pipe_pid    = 0;
+       con->username[0] = '\0';
+       con->password[0] = '\0';
 
        cupsdClearString(&con->command);
        cupsdClearString(&con->options);
@@ -859,64 +684,9 @@ cupsdReadClient(cupsd_client_t *con)       /* I - Client to read from */
 
 #ifdef HAVE_GSSAPI
         con->have_gss = 0;
-
-       if (con->gss_creds)
-       {
-         OM_uint32 minor_status;
-         gss_release_cred(&minor_status, &con->gss_creds);
-       }
+       con->gss_uid  = 0;
 #endif /* HAVE_GSSAPI */
 
-       /*
-        * Grab the request line...
-       */
-
-        switch (sscanf(line, "%63s%1023s%63s", operation, con->uri, version))
-       {
-         case 1 :
-             if (line[0])
-             {
-               cupsdLogMessage(CUPSD_LOG_ERROR,
-                               "Bad request line \"%s\" from %s!", line,
-                               con->http.hostname);
-               cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
-               cupsdCloseClient(con);
-              }
-             return;
-         case 2 :
-             con->http.version = HTTP_0_9;
-             break;
-         case 3 :
-             if (sscanf(version, "HTTP/%d.%d", &major, &minor) != 2)
-             {
-               cupsdLogMessage(CUPSD_LOG_ERROR,
-                               "Bad request line \"%s\" from %s!", line,
-                               con->http.hostname);
-               cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
-               cupsdCloseClient(con);
-               return;
-             }
-
-             if (major < 2)
-             {
-               con->http.version = (http_version_t)(major * 100 + minor);
-               if (con->http.version == HTTP_1_1 && KeepAlive)
-                 con->http.keep_alive = HTTP_KEEPALIVE_ON;
-               else
-                 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
-             }
-             else
-             {
-               cupsdLogMessage(CUPSD_LOG_ERROR,
-                               "Unsupported request line \"%s\" from %s!",
-                               line, con->http.hostname);
-               cupsdSendError(con, HTTP_NOT_SUPPORTED, CUPSD_AUTH_NONE);
-               cupsdCloseClient(con);
-               return;
-             }
-             break;
-       }
-
        /*
         * Handle full URLs in the request line...
        */
@@ -929,34 +699,41 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
                resource[HTTP_MAX_URI]; /* Resource path */
           int  port;                   /* Port number */
 
-
          /*
          * Separate the URI into its components...
          */
 
-          httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
-                         scheme, sizeof(scheme),
-                         userpass, sizeof(userpass),
-                         hostname, sizeof(hostname), &port,
-                         resource, sizeof(resource));
+          if (httpSeparateURI(HTTP_URI_CODING_MOST, con->uri,
+                             scheme, sizeof(scheme),
+                             userpass, sizeof(userpass),
+                             hostname, sizeof(hostname), &port,
+                             resource, sizeof(resource)) < HTTP_URI_STATUS_OK)
+          {
+           cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.",
+                           con->uri);
+           cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
+           cupsdCloseClient(con);
+           return;
+         }
 
-         /*
+        /*
          * Only allow URIs with the servername, localhost, or an IP
          * address...
          */
 
          if (strcmp(scheme, "file") &&
-             strcasecmp(hostname, ServerName) &&
-             strcasecmp(hostname, "localhost") &&
+             _cups_strcasecmp(hostname, ServerName) &&
+             _cups_strcasecmp(hostname, "localhost") &&
+             !cupsArrayFind(ServerAlias, hostname) &&
              !isdigit(hostname[0]) && hostname[0] != '[')
          {
           /*
            * Nope, we don't do proxies...
            */
 
-           cupsdLogMessage(CUPSD_LOG_ERROR, "Bad URI \"%s\" in request!",
-                           con->uri);
-           cupsdSendError(con, HTTP_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
+           cupsdLogClient(con, CUPSD_LOG_ERROR, "Bad URI \"%s\" in request.",
+                           con->uri);
+           cupsdSendError(con, HTTP_STATUS_METHOD_NOT_ALLOWED, CUPSD_AUTH_NONE);
            cupsdCloseClient(con);
            return;
          }
@@ -966,43 +743,19 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
          * con->uri are HTTP_MAX_URI bytes in size...
          */
 
-          strcpy(con->uri, resource);
+          strlcpy(con->uri, resource, sizeof(con->uri));
        }
 
        /*
         * Process the request...
        */
 
-        if (!strcmp(operation, "GET"))
-         con->http.state = HTTP_GET;
-        else if (!strcmp(operation, "PUT"))
-         con->http.state = HTTP_PUT;
-        else if (!strcmp(operation, "POST"))
-         con->http.state = HTTP_POST;
-        else if (!strcmp(operation, "DELETE"))
-         con->http.state = HTTP_DELETE;
-        else if (!strcmp(operation, "TRACE"))
-         con->http.state = HTTP_TRACE;
-        else if (!strcmp(operation, "OPTIONS"))
-         con->http.state = HTTP_OPTIONS;
-        else if (!strcmp(operation, "HEAD"))
-         con->http.state = HTTP_HEAD;
-       else
-       {
-         cupsdLogMessage(CUPSD_LOG_ERROR, "Bad operation \"%s\"!", operation);
-         cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
-         cupsdCloseClient(con);
-         return;
-       }
-
         gettimeofday(&(con->start), NULL);
-        con->operation = con->http.state;
 
-        cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %s %s HTTP/%d.%d",
-                       con->http.fd, operation, con->uri,
-                       con->http.version / 100, con->http.version % 100);
-
-       con->http.status = HTTP_OK;
+        cupsdLogClient(con, CUPSD_LOG_DEBUG, "%s %s HTTP/%d.%d",
+                      httpStateString(con->operation) + 11, con->uri,
+                      httpGetVersion(con->http) / 100,
+                       httpGetVersion(con->http) % 100);
 
         if (!cupsArrayFind(ActiveClients, con))
        {
@@ -1010,48 +763,45 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
           cupsdSetBusyState();
         }
 
-    case HTTP_OPTIONS :
-    case HTTP_DELETE :
-    case HTTP_GET :
-    case HTTP_HEAD :
-    case HTTP_POST :
-    case HTTP_PUT :
-    case HTTP_TRACE :
+    case HTTP_STATE_OPTIONS :
+    case HTTP_STATE_DELETE :
+    case HTTP_STATE_GET :
+    case HTTP_STATE_HEAD :
+    case HTTP_STATE_POST :
+    case HTTP_STATE_PUT :
+    case HTTP_STATE_TRACE :
        /*
         * Parse incoming parameters until the status changes...
        */
 
-        while ((status = httpUpdate(HTTP(con))) == HTTP_CONTINUE)
-         if (!data_ready(con))
+        while ((status = httpUpdate(con->http)) == HTTP_STATUS_CONTINUE)
+         if (!httpGetReady(con->http))
            break;
 
-       if (status != HTTP_OK && status != HTTP_CONTINUE)
+       if (status != HTTP_STATUS_OK && status != HTTP_STATUS_CONTINUE)
        {
-         if (con->http.error && con->http.error != EPIPE)
-           cupsdLogMessage(CUPSD_LOG_DEBUG,
-                           "cupsdReadClient: %d FIELDS Closing for error %d "
-                           "(%s)", con->http.fd, con->http.error,
-                           strerror(con->http.error));
+         if (httpError(con->http) && httpError(con->http) != EPIPE)
+           cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                           "Closing for error %d (%s) while reading headers.",
+                           httpError(con->http), strerror(httpError(con->http)));
          else
-           cupsdLogMessage(CUPSD_LOG_DEBUG,
-                           "cupsdReadClient: %d FIELDS Closing on EOF",
-                           con->http.fd);
+           cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                          "Closing on EOF while reading headers.");
 
-         cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
+         cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
          cupsdCloseClient(con);
          return;
        }
        break;
 
     default :
-        if (!data_ready(con) && recv(con->http.fd, buf, 1, MSG_PEEK) < 1)
+        if (!httpGetReady(con->http) && recv(httpGetFd(con->http), buf, 1, MSG_PEEK) < 1)
        {
         /*
          * Connection closed...
          */
 
-         cupsdLogMessage(CUPSD_LOG_DEBUG,
-                         "cupsdReadClient: %d Closing on EOF", con->http.fd);
+         cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on EOF.");
           cupsdCloseClient(con);
          return;
        }
@@ -1062,24 +812,26 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
   * Handle new transfers...
   */
 
-  if (status == HTTP_OK)
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Read: status=%d", status);
+
+  if (status == HTTP_STATUS_OK)
   {
-    if (con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE][0])
+    if (httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE)[0])
     {
      /*
       * Figure out the locale from the Accept-Language and Content-Type
       * fields...
       */
 
-      if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
+      if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE),
                         ',')) != NULL)
         *ptr = '\0';
 
-      if ((ptr = strchr(con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE],
+      if ((ptr = strchr(httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE),
                         ';')) != NULL)
         *ptr = '\0';
 
-      if ((ptr = strstr(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
+      if ((ptr = strstr(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE),
                         "charset=")) != NULL)
       {
        /*
@@ -1088,14 +840,14 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
        */
 
         snprintf(locale, sizeof(locale), "%s.%s",
-                con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE], ptr + 8);
+                httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE), ptr + 8);
 
        if ((ptr = strchr(locale, ',')) != NULL)
          *ptr = '\0';
       }
       else
         snprintf(locale, sizeof(locale), "%s.UTF-8",
-                con->http.fields[HTTP_FIELD_ACCEPT_LANGUAGE]);
+                httpGetField(con->http, HTTP_FIELD_ACCEPT_LANGUAGE));
 
       con->language = cupsLangGet(locale);
     }
@@ -1104,22 +856,23 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
 
     cupsdAuthorize(con);
 
-    if (!strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Keep-Alive",
-                    10) && KeepAlive)
-      con->http.keep_alive = HTTP_KEEPALIVE_ON;
-    else if (!strncasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "close", 5))
-      con->http.keep_alive = HTTP_KEEPALIVE_OFF;
+    if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
+                           "Keep-Alive", 10) && KeepAlive)
+      httpSetKeepAlive(con->http, HTTP_KEEPALIVE_ON);
+    else if (!_cups_strncasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
+                                "close", 5))
+      httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
 
-    if (!con->http.fields[HTTP_FIELD_HOST][0] &&
-        con->http.version >= HTTP_1_1)
+    if (!httpGetField(con->http, HTTP_FIELD_HOST)[0] &&
+        httpGetVersion(con->http) >= HTTP_VERSION_1_1)
     {
      /*
       * HTTP/1.1 and higher require the "Host:" field...
       */
 
-      if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
+      if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
       {
-        cupsdLogMessage(CUPSD_LOG_ERROR, "Missing Host: field in request!");
+        cupsdLogClient(con, CUPSD_LOG_ERROR, "Missing Host: field in request.");
        cupsdCloseClient(con);
        return;
       }
@@ -1131,17 +884,17 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
       * or IPv6 values in the Host: field.
       */
 
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Request from \"%s\" using invalid Host: field \"%s\"",
-                     con->http.hostname, con->http.fields[HTTP_FIELD_HOST]);
+      cupsdLogClient(con, CUPSD_LOG_ERROR,
+                     "Request from \"%s\" using invalid Host: field \"%s\".",
+                     httpGetHostname(con->http, NULL, 0), httpGetField(con->http, HTTP_FIELD_HOST));
 
-      if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
+      if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
       {
        cupsdCloseClient(con);
        return;
       }
     }
-    else if (con->operation == HTTP_OPTIONS)
+    else if (con->operation == HTTP_STATE_OPTIONS)
     {
      /*
       * Do OPTIONS command...
@@ -1149,45 +902,37 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
 
       if (con->best && con->best->type != CUPSD_AUTH_NONE)
       {
-       if (!cupsdSendHeader(con, HTTP_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
+        httpClearFields(con->http);
+
+       if (!cupsdSendHeader(con, HTTP_STATUS_UNAUTHORIZED, NULL, CUPSD_AUTH_NONE))
        {
          cupsdCloseClient(con);
          return;
        }
       }
 
-      if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
-         con->http.tls == NULL)
+      if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), "Upgrade") && strstr(httpGetField(con->http, HTTP_FIELD_UPGRADE), "TLS/") != NULL && !httpIsEncrypted(con->http))
       {
 #ifdef HAVE_SSL
        /*
         * Do encryption stuff...
        */
 
-       if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
-       {
-         cupsdCloseClient(con);
-         return;
-       }
-
-       httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
-       httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
-       httpPrintf(HTTP(con), "Content-Length: 0\r\n");
-       httpPrintf(HTTP(con), "\r\n");
+        httpClearFields(con->http);
 
-       if (cupsdFlushHeader(con) < 0)
-        {
+       if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
+       {
          cupsdCloseClient(con);
          return;
        }
 
-        if (!encrypt_client(con))
+        if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED))
         {
          cupsdCloseClient(con);
          return;
        }
 #else
-       if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
+       if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
        {
          cupsdCloseClient(con);
          return;
@@ -1195,17 +940,12 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
 #endif /* HAVE_SSL */
       }
 
-      if (!cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE))
-      {
-       cupsdCloseClient(con);
-       return;
-      }
-
-      httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
-      httpPrintf(HTTP(con), "Content-Length: 0\r\n");
-      httpPrintf(HTTP(con), "\r\n");
+      httpClearFields(con->http);
+      httpSetField(con->http, HTTP_FIELD_ALLOW,
+                  "GET, HEAD, OPTIONS, POST, PUT");
+      httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
 
-      if (cupsdFlushHeader(con) < 0)
+      if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
       {
        cupsdCloseClient(con);
        return;
@@ -1217,10 +957,10 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
       * Protect against malicious users!
       */
 
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Request for non-absolute resource \"%s\"!", con->uri);
+      cupsdLogClient(con, CUPSD_LOG_ERROR,
+                     "Request for non-absolute resource \"%s\".", con->uri);
 
-      if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
+      if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
       {
        cupsdCloseClient(con);
        return;
@@ -1228,38 +968,30 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
     }
     else
     {
-      if (!strcasecmp(con->http.fields[HTTP_FIELD_CONNECTION], "Upgrade") &&
-         con->http.tls == NULL)
+      if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION),
+                            "Upgrade") && !httpIsEncrypted(con->http))
       {
 #ifdef HAVE_SSL
        /*
         * Do encryption stuff...
        */
 
-       if (!cupsdSendHeader(con, HTTP_SWITCHING_PROTOCOLS, NULL, CUPSD_AUTH_NONE))
-       {
-         cupsdCloseClient(con);
-         return;
-       }
-
-       httpPrintf(HTTP(con), "Connection: Upgrade\r\n");
-       httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n");
-       httpPrintf(HTTP(con), "Content-Length: 0\r\n");
-       httpPrintf(HTTP(con), "\r\n");
+        httpClearFields(con->http);
 
-       if (cupsdFlushHeader(con) < 0)
-        {
+       if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL,
+                            CUPSD_AUTH_NONE))
+       {
          cupsdCloseClient(con);
          return;
        }
 
-        if (!encrypt_client(con))
+        if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED))
         {
          cupsdCloseClient(con);
          return;
        }
 #else
-       if (!cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
+       if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE))
        {
          cupsdCloseClient(con);
          return;
@@ -1267,23 +999,23 @@ cupsdReadClient(cupsd_client_t *con)     /* I - Client to read from */
 #endif /* HAVE_SSL */
       }
 
-      if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_OK)
+      if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_STATUS_OK)
       {
        cupsdSendError(con, status, CUPSD_AUTH_NONE);
        cupsdCloseClient(con);
        return;
       }
 
-      if (con->http.expect &&
-          (con->operation == HTTP_POST || con->operation == HTTP_PUT))
+      if (httpGetExpect(con->http) &&
+          (con->operation == HTTP_STATE_POST || con->operation == HTTP_STATE_PUT))
       {
-        if (con->http.expect == HTTP_CONTINUE)
+        if (httpGetExpect(con->http) == HTTP_STATUS_CONTINUE)
        {
         /*
          * Send 100-continue header...
          */
 
-         if (!cupsdSendHeader(con, HTTP_CONTINUE, NULL, CUPSD_AUTH_NONE))
+          if (httpWriteResponse(con->http, HTTP_STATUS_CONTINUE))
          {
            cupsdCloseClient(con);
            return;
@@ -1295,28 +1027,23 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
          * Send 417-expectation-failed header...
          */
 
-         if (!cupsdSendHeader(con, HTTP_EXPECTATION_FAILED, NULL,
-                              CUPSD_AUTH_NONE))
-         {
-           cupsdCloseClient(con);
-           return;
-         }
-
-         httpPrintf(HTTP(con), "Content-Length: 0\r\n");
-         httpPrintf(HTTP(con), "\r\n");
+          httpClearFields(con->http);
+         httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
 
-         if (cupsdFlushHeader(con) < 0)
-          {
-           cupsdCloseClient(con);
-           return;
-         }
+         cupsdSendError(con, HTTP_STATUS_EXPECTATION_FAILED, CUPSD_AUTH_NONE);
+          cupsdCloseClient(con);
+          return;
        }
       }
 
-      switch (con->http.state)
+      switch (httpGetState(con->http))
       {
-       case HTTP_GET_SEND :
-            if (!strncmp(con->uri, "/printers/", 10) &&
+       case HTTP_STATE_GET_SEND :
+            cupsdLogClient(con, CUPSD_LOG_DEBUG, "Processing GET %s", con->uri);
+
+            if ((!strncmp(con->uri, "/ppd/", 5) ||
+                !strncmp(con->uri, "/printers/", 10) ||
+                !strncmp(con->uri, "/classes/", 9)) &&
                !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
            {
             /*
@@ -1326,11 +1053,46 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
               con->uri[strlen(con->uri) - 4] = '\0';   /* Drop ".ppd" */
 
-              if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
+             if (!strncmp(con->uri, "/ppd/", 5))
+               p = cupsdFindPrinter(con->uri + 5);
+             else if (!strncmp(con->uri, "/printers/", 10))
+               p = cupsdFindPrinter(con->uri + 10);
+             else
+             {
+               p = cupsdFindClass(con->uri + 9);
+
+               if (p)
+               {
+                 int i;                /* Looping var */
+
+                 for (i = 0; i < p->num_printers; i ++)
+                 {
+                   if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
+                   {
+                     char ppdname[1024];/* PPD filename */
+
+                     snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
+                              ServerRoot, p->printers[i]->name);
+                     if (!access(ppdname, 0))
+                     {
+                       p = p->printers[i];
+                       break;
+                     }
+                   }
+                 }
+
+                  if (i >= p->num_printers)
+                    p = NULL;
+               }
+             }
+
+             if (p)
+             {
                snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
+             }
              else
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1339,7 +1101,8 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
                break;
              }
            }
-            else if ((!strncmp(con->uri, "/printers/", 10) ||
+            else if ((!strncmp(con->uri, "/icons/", 7) ||
+                     !strncmp(con->uri, "/printers/", 10) ||
                      !strncmp(con->uri, "/classes/", 9)) &&
                     !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
            {
@@ -1350,16 +1113,44 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
              con->uri[strlen(con->uri) - 4] = '\0';    /* Drop ".png" */
 
-              if (!strncmp(con->uri, "/printers/", 10))
+              if (!strncmp(con->uri, "/icons/", 7))
+                p = cupsdFindPrinter(con->uri + 7);
+              else if (!strncmp(con->uri, "/printers/", 10))
                 p = cupsdFindPrinter(con->uri + 10);
               else
-                p = cupsdFindClass(con->uri + 9);
+              {
+               p = cupsdFindClass(con->uri + 9);
+
+               if (p)
+               {
+                 int i;                /* Looping var */
+
+                 for (i = 0; i < p->num_printers; i ++)
+                 {
+                   if (!(p->printers[i]->type & CUPS_PRINTER_CLASS))
+                   {
+                     char ppdname[1024];/* PPD filename */
+
+                     snprintf(ppdname, sizeof(ppdname), "%s/ppd/%s.ppd",
+                              ServerRoot, p->printers[i]->name);
+                     if (!access(ppdname, 0))
+                     {
+                       p = p->printers[i];
+                       break;
+                     }
+                   }
+                 }
+
+                  if (i >= p->num_printers)
+                    p = NULL;
+               }
+             }
 
               if (p)
                snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
              else
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1369,14 +1160,27 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
              }
            }
 
-           if ((!strncmp(con->uri, "/admin", 6) &&
-                strncmp(con->uri, "/admin/conf/", 12) &&
-                strncmp(con->uri, "/admin/log/", 11)) ||
-               !strncmp(con->uri, "/printers", 9) ||
-               !strncmp(con->uri, "/classes", 8) ||
-               !strncmp(con->uri, "/help", 5) ||
-               !strncmp(con->uri, "/jobs", 5))
+           if ((!strncmp(con->uri, "/admin", 6) && strcmp(con->uri, "/admin/conf/cupsd.conf") && strncmp(con->uri, "/admin/log/", 11)) ||
+                !strncmp(con->uri, "/printers", 9) ||
+                !strncmp(con->uri, "/classes", 8) ||
+                !strncmp(con->uri, "/help", 5) ||
+                !strncmp(con->uri, "/jobs", 5))
            {
+             if (!WebInterface)
+             {
+              /*
+               * Web interface is disabled. Show an appropriate message...
+               */
+
+               if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE))
+               {
+                 cupsdCloseClient(con);
+                 return;
+               }
+
+               break;
+             }
+
             /*
              * Send CGI output...
              */
@@ -1431,34 +1235,28 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
               if (!cupsdSendCommand(con, con->command, con->options, 0))
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
                }
               }
              else
-               cupsdLogRequest(con, HTTP_OK);
+               cupsdLogRequest(con, HTTP_STATUS_OK);
 
-             if (con->http.version <= HTTP_1_0)
-               con->http.keep_alive = HTTP_KEEPALIVE_OFF;
+             if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
+               httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
            }
-            else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
-                     (strchr(con->uri + 12, '/') ||
-                      strlen(con->uri) == 12)) ||
-                    (!strncmp(con->uri, "/admin/log/", 11) &&
-                     (strchr(con->uri + 11, '/') ||
-                      strlen(con->uri) == 11)))
+            else if (!strncmp(con->uri, "/admin/log/", 11) && (strchr(con->uri + 11, '/') || strlen(con->uri) == 11))
            {
             /*
              * GET can only be done to configuration files directly under
              * /admin/conf...
              */
 
-             cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "Request for subdirectory \"%s\"!", con->uri);
+             cupsdLogClient(con, CUPSD_LOG_ERROR, "Request for subdirectory \"%s\".", con->uri);
 
-             if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
+             if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1475,7 +1273,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
               if ((filename = get_file(con, &filestats, buf,
                                       sizeof(buf))) == NULL)
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1486,6 +1284,8 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
 
              type = mimeFileType(MimeDatabase, filename, NULL, NULL);
 
+              cupsdLogClient(con, CUPSD_LOG_DEBUG, "filename=\"%s\", type=%s/%s", filename, type ? type->super : "", type ? type->type : "");
+
               if (is_cgi(con, filename, &filestats, type))
              {
               /*
@@ -1495,23 +1295,23 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
                if (!cupsdSendCommand(con, con->command, con->options, 0))
                {
-                 if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+                 if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                  {
                    cupsdCloseClient(con);
                    return;
                  }
                }
                else
-                 cupsdLogRequest(con, HTTP_OK);
+                 cupsdLogRequest(con, HTTP_STATUS_OK);
 
-               if (con->http.version <= HTTP_1_0)
-                 con->http.keep_alive = HTTP_KEEPALIVE_OFF;
+               if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
+                 httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
                break;
              }
 
              if (!check_if_modified(con, &filestats))
               {
-               if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1520,11 +1320,11 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
              else
               {
                if (type == NULL)
-                 strcpy(line, "text/plain");
+                 strlcpy(line, "text/plain", sizeof(line));
                else
                  snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
 
-               if (!write_file(con, HTTP_OK, filename, line, &filestats))
+               if (!write_file(con, HTTP_STATUS_OK, filename, line, &filestats))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1533,21 +1333,21 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            }
             break;
 
-       case HTTP_POST_RECV :
+       case HTTP_STATE_POST_RECV :
            /*
            * See if the POST request includes a Content-Length field, and if
            * so check the length against any limits that are set...
            */
 
-            if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
+            if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] &&
                MaxRequestSize > 0 &&
-               con->http.data_remaining > MaxRequestSize)
+               httpGetLength2(con->http) > MaxRequestSize)
            {
             /*
              * Request too large...
              */
 
-              if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1555,15 +1355,13 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
              break;
             }
-           else if (con->http.data_remaining < 0 ||
-                    (!con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
-                     con->http.data_encoding == HTTP_ENCODE_LENGTH))
+           else if (httpGetLength2(con->http) < 0)
            {
             /*
              * Negative content lengths are invalid!
              */
 
-              if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1577,14 +1375,26 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            * content-type field will be "application/ipp"...
            */
 
-           if (!strcmp(con->http.fields[HTTP_FIELD_CONTENT_TYPE],
+           if (!strcmp(httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE),
                        "application/ipp"))
               con->request = ippNew();
-           else if ((!strncmp(con->uri, "/admin", 6) &&
-                     strncmp(con->uri, "/admin/conf/", 12) &&
-                     strncmp(con->uri, "/admin/log/", 11)) ||
-                    !strncmp(con->uri, "/printers", 9) ||
-                    !strncmp(con->uri, "/classes", 8) ||
+            else if (!WebInterface)
+           {
+            /*
+             * Web interface is disabled. Show an appropriate message...
+             */
+
+             if (!cupsdSendError(con, HTTP_STATUS_CUPS_WEBIF_DISABLED, CUPSD_AUTH_NONE))
+             {
+               cupsdCloseClient(con);
+               return;
+             }
+
+             break;
+           }
+           else if ((!strncmp(con->uri, "/admin", 6) && strncmp(con->uri, "/admin/log/", 11)) ||
+                    !strncmp(con->uri, "/printers", 9) ||
+                    !strncmp(con->uri, "/classes", 8) ||
                     !strncmp(con->uri, "/help", 5) ||
                     !strncmp(con->uri, "/jobs", 5))
            {
@@ -1640,8 +1450,8 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
                  cupsdSetString(&con->options, NULL);
              }
 
-             if (con->http.version <= HTTP_1_0)
-               con->http.keep_alive = HTTP_KEEPALIVE_OFF;
+             if (httpGetVersion(con->http) <= HTTP_VERSION_1_0)
+               httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
            }
            else
            {
@@ -1652,7 +1462,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
               if ((filename = get_file(con, &filestats, buf,
                                       sizeof(buf))) == NULL)
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1669,7 +1479,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
                * Only POST to CGI's...
                */
 
-               if (!cupsdSendError(con, HTTP_UNAUTHORIZED, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_UNAUTHORIZED, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
@@ -1678,24 +1488,21 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            }
            break;
 
-       case HTTP_PUT_RECV :
+       case HTTP_STATE_PUT_RECV :
           /*
            * Validate the resource name...
            */
 
-            if (strncmp(con->uri, "/admin/conf/", 12) ||
-               strchr(con->uri + 12, '/') ||
-               strlen(con->uri) == 12)
+            if (strcmp(con->uri, "/admin/conf/cupsd.conf"))
            {
             /*
-             * PUT can only be done to configuration files under
-             * /admin/conf...
+             * PUT can only be done to the cupsd.conf file...
              */
 
-             cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "Request for subdirectory \"%s\"!", con->uri);
+             cupsdLogClient(con, CUPSD_LOG_ERROR,
+                            "Disallowed PUT request for \"%s\".", con->uri);
 
-             if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
+             if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1709,15 +1516,15 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            * so check the length against any limits that are set...
            */
 
-            if (con->http.fields[HTTP_FIELD_CONTENT_LENGTH][0] &&
+            if (httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0] &&
                MaxRequestSize > 0 &&
-               con->http.data_remaining > MaxRequestSize)
+               httpGetLength2(con->http) > MaxRequestSize)
            {
             /*
              * Request too large...
              */
 
-              if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1725,13 +1532,13 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
              break;
             }
-           else if (con->http.data_remaining < 0)
+           else if (httpGetLength2(con->http) < 0)
            {
             /*
              * Negative content lengths are invalid!
              */
 
-              if (!cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1750,11 +1557,11 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
            if (con->file < 0)
            {
-             cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "Unable to create request file %s: %s",
-                             con->filename, strerror(errno));
+             cupsdLogClient(con, CUPSD_LOG_ERROR,
+                            "Unable to create request file \"%s\": %s",
+                             con->filename, strerror(errno));
 
-             if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+             if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -1766,13 +1573,13 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
            break;
 
-       case HTTP_DELETE :
-       case HTTP_TRACE :
-            cupsdSendError(con, HTTP_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
+       case HTTP_STATE_DELETE :
+       case HTTP_STATE_TRACE :
+            cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE);
            cupsdCloseClient(con);
            return;
 
-       case HTTP_HEAD :
+       case HTTP_STATE_HEAD :
             if (!strncmp(con->uri, "/printers/", 10) &&
                !strcmp(con->uri + strlen(con->uri) - 4, ".ppd"))
            {
@@ -1787,92 +1594,116 @@ cupsdReadClient(cupsd_client_t *con)   /* I - Client to read from */
                snprintf(con->uri, sizeof(con->uri), "/ppd/%s.ppd", p->name);
              else
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
                }
 
+               cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND);
                break;
              }
            }
-
-           if ((!strncmp(con->uri, "/admin", 6) &&
-                strncmp(con->uri, "/admin/conf/", 12) &&
-                strncmp(con->uri, "/admin/log/", 11)) ||
-               !strncmp(con->uri, "/printers", 9) ||
-               !strncmp(con->uri, "/classes", 8) ||
-               !strncmp(con->uri, "/help", 5) ||
-               !strncmp(con->uri, "/jobs", 5))
+            else if (!strncmp(con->uri, "/printers/", 10) &&
+                    !strcmp(con->uri + strlen(con->uri) - 4, ".png"))
            {
             /*
-             * CGI output...
+             * Send PNG file - get the real printer name since printer
+             * names are not case sensitive but filenames can be...
              */
 
-              if (!cupsdSendHeader(con, HTTP_OK, "text/html", CUPSD_AUTH_NONE))
+              con->uri[strlen(con->uri) - 4] = '\0';   /* Drop ".ppd" */
+
+              if ((p = cupsdFindPrinter(con->uri + 10)) != NULL)
+               snprintf(con->uri, sizeof(con->uri), "/icons/%s.png", p->name);
+             else
              {
-               cupsdCloseClient(con);
-               return;
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
+               {
+                 cupsdCloseClient(con);
+                 return;
+               }
+
+               cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND);
+               break;
              }
+           }
+           else if (!WebInterface)
+           {
+              httpClearFields(con->http);
 
-             if (httpPrintf(HTTP(con), "\r\n") < 0)
+              if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
 
-             if (cupsdFlushHeader(con) < 0)
+              cupsdLogRequest(con, HTTP_STATUS_OK);
+             break;
+           }
+
+           if ((!strncmp(con->uri, "/admin", 6) && strcmp(con->uri, "/admin/conf/cupsd.conf") && strncmp(con->uri, "/admin/log/", 11)) ||
+               !strncmp(con->uri, "/printers", 9) ||
+               !strncmp(con->uri, "/classes", 8) ||
+               !strncmp(con->uri, "/help", 5) ||
+               !strncmp(con->uri, "/jobs", 5))
+           {
+            /*
+             * CGI output...
+             */
+
+              httpClearFields(con->http);
+
+              if (!cupsdSendHeader(con, HTTP_STATUS_OK, "text/html", CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
 
-              cupsdLogRequest(con, HTTP_OK);
+              cupsdLogRequest(con, HTTP_STATUS_OK);
            }
-            else if ((!strncmp(con->uri, "/admin/conf/", 12) &&
-                     (strchr(con->uri + 12, '/') ||
-                      strlen(con->uri) == 12)) ||
-                    (!strncmp(con->uri, "/admin/log/", 11) &&
-                     (strchr(con->uri + 11, '/') ||
-                      strlen(con->uri) == 11)))
+            else if (!strncmp(con->uri, "/admin/log/", 11) && (strchr(con->uri + 11, '/') || strlen(con->uri) == 11))
            {
             /*
              * HEAD can only be done to configuration files under
              * /admin/conf...
              */
 
-             cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "Request for subdirectory \"%s\"!", con->uri);
+             cupsdLogClient(con, CUPSD_LOG_ERROR,
+                            "Request for subdirectory \"%s\".", con->uri);
 
-             if (!cupsdSendError(con, HTTP_FORBIDDEN, CUPSD_AUTH_NONE))
+             if (!cupsdSendError(con, HTTP_STATUS_FORBIDDEN, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
 
+              cupsdLogRequest(con, HTTP_STATUS_FORBIDDEN);
              break;
            }
            else if ((filename = get_file(con, &filestats, buf,
                                          sizeof(buf))) == NULL)
            {
-             if (!cupsdSendHeader(con, HTTP_NOT_FOUND, "text/html",
+              httpClearFields(con->http);
+
+             if (!cupsdSendHeader(con, HTTP_STATUS_NOT_FOUND, "text/html",
                                   CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
 
-              cupsdLogRequest(con, HTTP_NOT_FOUND);
+              cupsdLogRequest(con, HTTP_STATUS_NOT_FOUND);
            }
            else if (!check_if_modified(con, &filestats))
             {
-              if (!cupsdSendError(con, HTTP_NOT_MODIFIED, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_NOT_MODIFIED, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
 
-              cupsdLogRequest(con, HTTP_NOT_MODIFIED);
+              cupsdLogRequest(con, HTTP_STATUS_NOT_MODIFIED);
            }
            else
            {
@@ -1882,46 +1713,24 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
              type = mimeFileType(MimeDatabase, filename, NULL, NULL);
              if (type == NULL)
-               strcpy(line, "text/plain");
+               strlcpy(line, "text/plain", sizeof(line));
              else
                snprintf(line, sizeof(line), "%s/%s", type->super, type->type);
 
-              if (!cupsdSendHeader(con, HTTP_OK, line, CUPSD_AUTH_NONE))
-             {
-               cupsdCloseClient(con);
-               return;
-             }
+              httpClearFields(con->http);
 
-             if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
-                            httpGetDateString(filestats.st_mtime)) < 0)
-             {
-               cupsdCloseClient(con);
-               return;
-             }
+             httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED,
+                          httpGetDateString(filestats.st_mtime));
+             httpSetLength(con->http, (size_t)filestats.st_size);
 
-             if (httpPrintf(HTTP(con), "Content-Length: %lu\r\n",
-                            (unsigned long)filestats.st_size) < 0)
+              if (!cupsdSendHeader(con, HTTP_STATUS_OK, line, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
 
-              cupsdLogRequest(con, HTTP_OK);
-           }
-
-            if (httpPrintf(HTTP(con), "\r\n") < 0)
-           {
-             cupsdCloseClient(con);
-             return;
-           }
-
-           if (cupsdFlushHeader(con) < 0)
-            {
-             cupsdCloseClient(con);
-             return;
+              cupsdLogRequest(con, HTTP_STATUS_OK);
            }
-
-            con->http.state = HTTP_WAITING;
             break;
 
        default :
@@ -1934,22 +1743,20 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
   * Handle any incoming data...
   */
 
-  switch (con->http.state)
+  switch (httpGetState(con->http))
   {
-    case HTTP_PUT_RECV :
+    case HTTP_STATE_PUT_RECV :
         do
        {
-          if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
+          if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0)
          {
-           if (con->http.error && con->http.error != EPIPE)
-             cupsdLogMessage(CUPSD_LOG_DEBUG,
-                             "cupsdReadClient: %d PUT_RECV Closing for error "
-                             "%d (%s)", con->http.fd, con->http.error,
-                             strerror(con->http.error));
+           if (httpError(con->http) && httpError(con->http) != EPIPE)
+             cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                             "HTTP_STATE_PUT_RECV Closing for error %d (%s)",
+                             httpError(con->http), strerror(httpError(con->http)));
            else
-             cupsdLogMessage(CUPSD_LOG_DEBUG,
-                             "cupsdReadClient: %d PUT_RECV Closing on EOF",
-                             con->http.fd);
+             cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                            "HTTP_STATE_PUT_RECV Closing on EOF.");
 
            cupsdCloseClient(con);
            return;
@@ -1958,28 +1765,47 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
          {
            con->bytes += bytes;
 
-            if (write(con->file, line, bytes) < bytes)
+            if (MaxRequestSize > 0 && con->bytes > MaxRequestSize)
+            {
+             close(con->file);
+             con->file = -1;
+             unlink(con->filename);
+             cupsdClearString(&con->filename);
+
+              if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+             {
+               cupsdCloseClient(con);
+               return;
+             }
+            }
+
+            if (write(con->file, line, (size_t)bytes) < bytes)
            {
-              cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "cupsdReadClient: Unable to write %d bytes to %s: %s",
-                             bytes, con->filename, strerror(errno));
+              cupsdLogClient(con, CUPSD_LOG_ERROR,
+                            "Unable to write %d bytes to \"%s\": %s", bytes,
+                             con->filename, strerror(errno));
 
              close(con->file);
              con->file = -1;
              unlink(con->filename);
              cupsdClearString(&con->filename);
 
-              if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
              }
            }
          }
+          else if (httpGetState(con->http) == HTTP_STATE_PUT_RECV)
+          {
+            cupsdCloseClient(con);
+            return;
+          }
         }
-       while (con->http.state == HTTP_PUT_RECV && data_ready(con));
+       while (httpGetState(con->http) == HTTP_STATE_PUT_RECV && httpGetReady(con->http));
 
-        if (con->http.state == HTTP_WAITING)
+        if (httpGetState(con->http) == HTTP_STATE_STATUS)
        {
         /*
          * End of file, see how big it is...
@@ -2000,7 +1826,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
            unlink(con->filename);
            cupsdClearString(&con->filename);
 
-            if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+            if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
            {
              cupsdCloseClient(con);
              return;
@@ -2011,7 +1837,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
          * Install the configuration file...
          */
 
-          status = install_conf_file(con);
+          status = install_cupsd_conf(con);
 
          /*
          * Return the status to the client...
@@ -2025,7 +1851,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
        }
         break;
 
-    case HTTP_POST_RECV :
+    case HTTP_STATE_POST_RECV :
         do
        {
           if (con->request && con->file < 0)
@@ -2034,39 +1860,43 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            * Grab any request data from the connection...
            */
 
-           if ((ipp_state = ippRead(&(con->http), con->request)) == IPP_ERROR)
+           if (!httpWait(con->http, 0))
+             return;
+
+           if ((ipp_state = ippRead(con->http, con->request)) == IPP_STATE_ERROR)
            {
-              cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "cupsdReadClient: %d IPP Read Error!",
-                             con->http.fd);
+              cupsdLogClient(con, CUPSD_LOG_ERROR, "IPP read error: %s",
+                             cupsLastErrorString());
 
-             cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
+             cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
              cupsdCloseClient(con);
              return;
            }
-           else if (ipp_state != IPP_DATA)
+           else if (ipp_state != IPP_STATE_DATA)
            {
-              if (con->http.state == HTTP_POST_SEND)
+              if (httpGetState(con->http) == HTTP_STATE_POST_SEND)
              {
-               cupsdSendError(con, HTTP_BAD_REQUEST, CUPSD_AUTH_NONE);
+               cupsdSendError(con, HTTP_STATUS_BAD_REQUEST, CUPSD_AUTH_NONE);
                cupsdCloseClient(con);
                return;
              }
 
+             if (httpGetReady(con->http))
+               continue;
              break;
             }
            else
            {
-             cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdReadClient: %d %d.%d %s %d",
-                             con->http.fd, con->request->request.op.version[0],
+             cupsdLogClient(con, CUPSD_LOG_DEBUG, "%d.%d %s %d",
+                             con->request->request.op.version[0],
                              con->request->request.op.version[1],
                              ippOpString(con->request->request.op.operation_id),
                              con->request->request.op.request_id);
-             con->bytes += ippLength(con->request);
+             con->bytes += (off_t)ippLength(con->request);
            }
          }
 
-          if (con->file < 0 && con->http.state != HTTP_POST_SEND)
+          if (con->file < 0 && httpGetState(con->http) != HTTP_STATE_POST_SEND)
          {
            /*
            * Create a file as needed for the request data...
@@ -2078,11 +1908,11 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
 
            if (con->file < 0)
            {
-             cupsdLogMessage(CUPSD_LOG_ERROR,
-                             "Unable to create request file %s: %s",
-                             con->filename, strerror(errno));
+             cupsdLogClient(con, CUPSD_LOG_ERROR,
+                            "Unable to create request file \"%s\": %s",
+                             con->filename, strerror(errno));
 
-             if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+             if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -2094,19 +1924,19 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
             fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
          }
 
-         if (con->http.state != HTTP_POST_SEND)
+         if (httpGetState(con->http) != HTTP_STATE_POST_SEND)
          {
-            if ((bytes = httpRead2(HTTP(con), line, sizeof(line))) < 0)
+           if (!httpWait(con->http, 0))
+             return;
+            else if ((bytes = httpRead2(con->http, line, sizeof(line))) < 0)
            {
-             if (con->http.error && con->http.error != EPIPE)
-               cupsdLogMessage(CUPSD_LOG_DEBUG,
-                               "cupsdReadClient: %d POST_SEND Closing for "
-                               "error %d (%s)", con->http.fd, con->http.error,
-                               strerror(con->http.error));
+             if (httpError(con->http) && httpError(con->http) != EPIPE)
+               cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                              "HTTP_STATE_POST_SEND Closing for error %d (%s)",
+                               httpError(con->http), strerror(httpError(con->http)));
              else
-               cupsdLogMessage(CUPSD_LOG_DEBUG,
-                               "cupsdReadClient: %d POST_SEND Closing on EOF",
-                               con->http.fd);
+               cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                              "HTTP_STATE_POST_SEND Closing on EOF.");
 
              cupsdCloseClient(con);
              return;
@@ -2115,19 +1945,32 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            {
              con->bytes += bytes;
 
-              if (write(con->file, line, bytes) < bytes)
+              if (MaxRequestSize > 0 && con->bytes > MaxRequestSize)
+              {
+                close(con->file);
+                con->file = -1;
+                unlink(con->filename);
+                cupsdClearString(&con->filename);
+
+                if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+                {
+                  cupsdCloseClient(con);
+                  return;
+                }
+              }
+
+              if (write(con->file, line, (size_t)bytes) < bytes)
              {
-               cupsdLogMessage(CUPSD_LOG_ERROR,
-                               "cupsdReadClient: Unable to write %d bytes to "
-                               "%s: %s", bytes, con->filename,
-                               strerror(errno));
+               cupsdLogClient(con, CUPSD_LOG_ERROR,
+                              "Unable to write %d bytes to \"%s\": %s",
+                               bytes, con->filename, strerror(errno));
 
                close(con->file);
                con->file = -1;
                unlink(con->filename);
                cupsdClearString(&con->filename);
 
-               if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE,
+               if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE,
                                    CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
@@ -2135,21 +1978,21 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
                }
              }
            }
-           else if (con->http.state == HTTP_POST_RECV)
+           else if (httpGetState(con->http) == HTTP_STATE_POST_RECV)
               return;
-           else if (con->http.state != HTTP_POST_SEND)
+           else if (httpGetState(con->http) != HTTP_STATE_POST_SEND)
            {
-             cupsdLogMessage(CUPSD_LOG_DEBUG,
-                             "cupsdReadClient: %d Closing on unknown HTTP "
-                             "state %d", con->http.fd, con->http.state);
+             cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                            "Closing on unexpected state %s.",
+                            httpStateString(httpGetState(con->http)));
              cupsdCloseClient(con);
              return;
            }
          }
         }
-       while (con->http.state == HTTP_POST_RECV && data_ready(con));
+       while (httpGetState(con->http) == HTTP_STATE_POST_RECV && httpGetReady(con->http));
 
-       if (con->http.state == HTTP_POST_SEND)
+       if (httpGetState(con->http) == HTTP_STATE_POST_SEND)
        {
          if (con->file >= 0)
          {
@@ -2178,7 +2021,7 @@ cupsdReadClient(cupsd_client_t *con)      /* I - Client to read from */
                con->request = NULL;
               }
 
-              if (!cupsdSendError(con, HTTP_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
+              if (!cupsdSendError(con, HTTP_STATUS_REQUEST_TOO_LARGE, CUPSD_AUTH_NONE))
              {
                cupsdCloseClient(con);
                return;
@@ -2198,14 +2041,14 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
            {
              if (!cupsdSendCommand(con, con->command, con->options, 0))
              {
-               if (!cupsdSendError(con, HTTP_NOT_FOUND, CUPSD_AUTH_NONE))
+               if (!cupsdSendError(con, HTTP_STATUS_NOT_FOUND, CUPSD_AUTH_NONE))
                {
                  cupsdCloseClient(con);
                  return;
                }
               }
              else
-               cupsdLogRequest(con, HTTP_OK);
+               cupsdLogRequest(con, HTTP_STATUS_OK);
             }
          }
 
@@ -2228,13 +2071,12 @@ cupsdReadClient(cupsd_client_t *con)    /* I - Client to read from */
         break; /* Anti-compiler-warning-code */
   }
 
-  if (con->http.state == HTTP_WAITING)
+  if (httpGetState(con->http) == HTTP_STATE_WAITING)
   {
-    if (!con->http.keep_alive)
+    if (!httpGetKeepAlive(con->http))
     {
-      cupsdLogMessage(CUPSD_LOG_DEBUG,
-                     "cupsdReadClient: %d Closing because Keep-Alive disabled",
-                     con->http.fd);
+      cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                     "Closing because Keep-Alive is disabled.");
       cupsdCloseClient(con);
     }
     else
@@ -2266,10 +2108,10 @@ cupsdSendCommand(
 
     if (fd < 0)
     {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "cupsdSendCommand: %d Unable to open \"%s\" for reading: %s",
-                      con->http.fd, con->filename ? con->filename : "/dev/null",
-                     strerror(errno));
+      cupsdLogClient(con, CUPSD_LOG_ERROR,
+                     "Unable to open \"%s\" for reading: %s",
+                     con->filename ? con->filename : "/dev/null",
+                    strerror(errno));
       return (0);
     }
 
@@ -2278,16 +2120,16 @@ cupsdSendCommand(
   else
     fd = -1;
 
-  con->pipe_pid = pipe_command(con, fd, &(con->file), command, options, root);
+  con->pipe_pid    = pipe_command(con, fd, &(con->file), command, options, root);
+  con->pipe_status = HTTP_STATUS_OK;
+
+  httpClearFields(con->http);
 
   if (fd >= 0)
     close(fd);
 
-  cupsdLogMessage(CUPSD_LOG_INFO, "Started \"%s\" (pid=%d)", command,
-                  con->pipe_pid);
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdSendCommand: %d file=%d",
-                  con->http.fd, con->file);
+  cupsdLogClient(con, CUPSD_LOG_INFO, "Started \"%s\" (pid=%d, file=%d)",
+                 command, con->pipe_pid, con->file);
 
   if (con->pipe_pid == 0)
     return (0);
@@ -2296,6 +2138,8 @@ cupsdSendCommand(
 
   cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
 
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data.");
+
   con->sent_header = 0;
   con->file_ready  = 0;
   con->got_fields  = 0;
@@ -2314,9 +2158,10 @@ cupsdSendError(cupsd_client_t *con,      /* I - Connection */
                http_status_t  code,    /* I - Error code */
               int            auth_type)/* I - Authentication type */
 {
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "cupsdSendError(con=%p(%d), code=%d, auth_type=%d", con,
-                 con->http.fd, code, auth_type);
+  char location[HTTP_MAX_VALUE];       /* Location field */
+
+
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "cupsdSendError code=%d, auth_type=%d", code, auth_type);
 
 #ifdef HAVE_SSL
  /*
@@ -2324,12 +2169,12 @@ cupsdSendError(cupsd_client_t *con,     /* I - Connection */
   * server is configured...
   */
 
-  if (code == HTTP_UNAUTHORIZED &&
-      DefaultEncryption == HTTP_ENCRYPT_REQUIRED &&
-      strcasecmp(con->http.hostname, "localhost") &&
-      !con->http.tls)
+  if (code == HTTP_STATUS_UNAUTHORIZED &&
+      DefaultEncryption == HTTP_ENCRYPTION_REQUIRED &&
+      _cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost") &&
+      !httpIsEncrypted(con->http))
   {
-    code = HTTP_UPGRADE_REQUIRED;
+    code = HTTP_STATUS_UPGRADE_REQUIRED;
   }
 #endif /* HAVE_SSL */
 
@@ -2347,34 +2192,20 @@ cupsdSendError(cupsd_client_t *con,     /* I - Connection */
   * never disable it in that case.
   */
 
-  if (code >= HTTP_BAD_REQUEST && con->http.auth_type != CUPSD_AUTH_NEGOTIATE)
-    con->http.keep_alive = HTTP_KEEPALIVE_OFF;
+  strlcpy(location, httpGetField(con->http, HTTP_FIELD_LOCATION), sizeof(location));
 
- /*
-  * Send an error message back to the client.  If the error code is a
-  * 400 or 500 series, make sure the message contains some text, too!
-  */
-
-  if (!cupsdSendHeader(con, code, NULL, auth_type))
-    return (0);
+  httpClearFields(con->http);
 
-#ifdef HAVE_SSL
-  if (code == HTTP_UPGRADE_REQUIRED)
-    if (httpPrintf(HTTP(con), "Connection: Upgrade\r\n") < 0)
-      return (0);
+  httpSetField(con->http, HTTP_FIELD_LOCATION, location);
 
-  if (httpPrintf(HTTP(con), "Upgrade: TLS/1.0,HTTP/1.1\r\n") < 0)
-    return (0);
-#endif /* HAVE_SSL */
+  if (code >= HTTP_STATUS_BAD_REQUEST && con->type != CUPSD_AUTH_NEGOTIATE)
+    httpSetKeepAlive(con->http, HTTP_KEEPALIVE_OFF);
 
-  if (con->http.version >= HTTP_1_1 &&
-      con->http.keep_alive == HTTP_KEEPALIVE_OFF)
-  {
-    if (httpPrintf(HTTP(con), "Connection: close\r\n") < 0)
-      return (0);
-  }
+  if (httpGetVersion(con->http) >= HTTP_VERSION_1_1 &&
+      httpGetKeepAlive(con->http) == HTTP_KEEPALIVE_OFF)
+    httpSetField(con->http, HTTP_FIELD_CONNECTION, "close");
 
-  if (code >= HTTP_BAD_REQUEST)
+  if (code >= HTTP_STATUS_BAD_REQUEST)
   {
    /*
     * Send a human-readable error message.
@@ -2388,13 +2219,13 @@ cupsdSendError(cupsd_client_t *con,     /* I - Connection */
 
     redirect[0] = '\0';
 
-    if (code == HTTP_UNAUTHORIZED)
+    if (code == HTTP_STATUS_UNAUTHORIZED)
       text = _cupsLangString(con->language,
                              _("Enter your username and password or the "
                               "root username and password to access this "
                               "page. If you are using Kerberos authentication, "
                               "make sure you have a valid Kerberos ticket."));
-    else if (code == HTTP_UPGRADE_REQUIRED)
+    else if (code == HTTP_STATUS_UPGRADE_REQUIRED)
     {
       text = urltext;
 
@@ -2411,6 +2242,10 @@ cupsdSendError(cupsd_client_t *con,      /* I - Connection */
               "CONTENT=\"3;URL=https://%s:%d%s\">\n",
               con->servername, con->serverport, con->uri);
     }
+    else if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED)
+      text = _cupsLangString(con->language,
+                             _("The web interface is currently disabled. Run "
+                              "\"cupsctl WebInterface=yes\" to enable it."));
     else
       text = "";
 
@@ -2421,35 +2256,44 @@ cupsdSendError(cupsd_client_t *con,     /* I - Connection */
             "<HEAD>\n"
              "\t<META HTTP-EQUIV=\"Content-Type\" "
             "CONTENT=\"text/html; charset=utf-8\">\n"
-            "\t<TITLE>%d %s</TITLE>\n"
+            "\t<TITLE>%s - " CUPS_SVERSION "</TITLE>\n"
             "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
             "HREF=\"/cups.css\">\n"
             "%s"
             "</HEAD>\n"
              "<BODY>\n"
-            "<H1>%d %s</H1>\n"
+            "<H1>%s</H1>\n"
             "<P>%s</P>\n"
             "</BODY>\n"
             "</HTML>\n",
-            code, httpStatus(code), redirect, code, httpStatus(code), text);
+            _httpStatus(con->language, code), redirect,
+            _httpStatus(con->language, code), text);
 
-    if (httpPrintf(HTTP(con), "Content-Type: text/html; charset=utf-8\r\n") < 0)
-      return (0);
-    if (httpPrintf(HTTP(con), "Content-Length: %d\r\n",
-                   (int)strlen(message)) < 0)
+   /*
+    * Send an error message back to the client.  If the error code is a
+    * 400 or 500 series, make sure the message contains some text, too!
+    */
+
+    size_t length = strlen(message);   /* Length of message */
+
+    httpSetLength(con->http, length);
+
+    if (!cupsdSendHeader(con, code, "text/html", auth_type))
       return (0);
-    if (httpPrintf(HTTP(con), "\r\n") < 0)
+
+    if (httpWrite2(con->http, message, length) < 0)
       return (0);
-    if (httpPrintf(HTTP(con), "%s", message) < 0)
+
+    if (httpFlushWrite(con->http) < 0)
       return (0);
   }
-  else if (httpPrintf(HTTP(con), "\r\n") < 0)
-    return (0);
-
-  if (cupsdFlushHeader(con) < 0)
-    return (0);
+  else
+  {
+    httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0");
 
-  con->http.state = HTTP_WAITING;
+    if (!cupsdSendHeader(con, code, NULL, auth_type))
+      return (0);
+  }
 
   return (1);
 }
@@ -2467,81 +2311,65 @@ cupsdSendHeader(
     int            auth_type)          /* I - Type of authentication */
 {
   char         auth_str[1024];         /* Authorization string */
-#ifdef HAVE_GSSAPI
-  static char  *gss_buf = NULL;        /* Kerberos auth data buffer */
-  static int   gss_bufsize = 0;        /* Size of Kerberos auth data buffer */
-#endif /* HAVE_GSSAPI */
 
 
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "cupsdSendHeader: code=%d, type=\"%s\", auth_type=%d", code, type, auth_type);
+
  /*
   * Send the HTTP status header...
   */
 
-  if (code == HTTP_CONTINUE)
+  if (code == HTTP_STATUS_CUPS_WEBIF_DISABLED)
   {
    /*
-    * 100-continue doesn't send any headers...
+    * Treat our special "web interface is disabled" status as "200 OK" for web
+    * browsers.
     */
 
-    return (httpPrintf(HTTP(con), "HTTP/%d.%d 100 Continue\r\n\r\n",
-                      con->http.version / 100, con->http.version % 100) > 0);
+    code = HTTP_STATUS_OK;
   }
 
-  httpFlushWrite(HTTP(con));
-
-  con->http.data_encoding = HTTP_ENCODE_FIELDS;
-
-  if (httpPrintf(HTTP(con), "HTTP/%d.%d %d %s\r\n", con->http.version / 100,
-                 con->http.version % 100, code, httpStatus(code)) < 0)
-    return (0);
-  if (httpPrintf(HTTP(con), "Date: %s\r\n", httpGetDateString(time(NULL))) < 0)
-    return (0);
   if (ServerHeader)
-    if (httpPrintf(HTTP(con), "Server: %s\r\n", ServerHeader) < 0)
-      return (0);
-  if (con->http.keep_alive && con->http.version >= HTTP_1_0)
-  {
-    if (httpPrintf(HTTP(con), "Connection: Keep-Alive\r\n") < 0)
-      return (0);
-    if (httpPrintf(HTTP(con), "Keep-Alive: timeout=%d\r\n",
-                   KeepAliveTimeout) < 0)
-      return (0);
-  }
-  if (code == HTTP_METHOD_NOT_ALLOWED)
-    if (httpPrintf(HTTP(con), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
-      return (0);
+    httpSetField(con->http, HTTP_FIELD_SERVER, ServerHeader);
 
-  if (code == HTTP_UNAUTHORIZED)
+  if (code == HTTP_STATUS_METHOD_NOT_ALLOWED)
+    httpSetField(con->http, HTTP_FIELD_ALLOW, "GET, HEAD, OPTIONS, POST, PUT");
+
+  if (code == HTTP_STATUS_UNAUTHORIZED)
   {
     if (auth_type == CUPSD_AUTH_NONE)
     {
       if (!con->best || con->best->type <= CUPSD_AUTH_NONE)
-       auth_type = DefaultAuthType;
+       auth_type = cupsdDefaultAuthType();
       else
        auth_type = con->best->type;
     }
 
     auth_str[0] = '\0';
 
-    if (auth_type == CUPSD_AUTH_BASIC || auth_type == CUPSD_AUTH_BASICDIGEST)
+    if (auth_type == CUPSD_AUTH_BASIC)
       strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
-    else if (auth_type == CUPSD_AUTH_DIGEST)
-      snprintf(auth_str, sizeof(auth_str), "Digest realm=\"CUPS\", nonce=\"%s\"",
-              con->http.hostname);
 #ifdef HAVE_GSSAPI
-    else if (auth_type == CUPSD_AUTH_NEGOTIATE && con->gss_output_token.length == 0)
+    else if (auth_type == CUPSD_AUTH_NEGOTIATE)
+    {
+#  ifdef AF_LOCAL
+      if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL)
+        strlcpy(auth_str, "Basic realm=\"CUPS\"", sizeof(auth_str));
+      else
+#  endif /* AF_LOCAL */
       strlcpy(auth_str, "Negotiate", sizeof(auth_str));
+    }
 #endif /* HAVE_GSSAPI */
 
     if (con->best && auth_type != CUPSD_AUTH_NEGOTIATE &&
-        !strcasecmp(con->http.hostname, "localhost"))
+        !_cups_strcasecmp(httpGetHostname(con->http, NULL, 0), "localhost"))
     {
      /*
       * Add a "trc" (try root certification) parameter for local non-Kerberos
       * requests when the request requires system group membership - then the
       * client knows the root certificate can/should be used.
       *
-      * Also, for Mac OS X we also look for @AUTHKEY and add an "authkey"
+      * Also, for OS X we also look for @AUTHKEY and add an "authkey"
       * parameter as needed...
       */
 
@@ -2550,14 +2378,14 @@ cupsdSendHeader(
       size_t   auth_size;              /* Size of remaining buffer */
 
       auth_key  = auth_str + strlen(auth_str);
-      auth_size = sizeof(auth_str) - (auth_key - auth_str);
+      auth_size = sizeof(auth_str) - (size_t)(auth_key - auth_str);
 
       for (name = (char *)cupsArrayFirst(con->best->names);
            name;
           name = (char *)cupsArrayNext(con->best->names))
       {
 #ifdef HAVE_AUTHORIZATION_H
-       if (!strncasecmp(name, "@AUTHKEY(", 9))
+       if (!_cups_strncasecmp(name, "@AUTHKEY(", 9))
        {
          snprintf(auth_key, auth_size, ", authkey=\"%s\"", name + 9);
          /* end parenthesis is stripped in conf.c */
@@ -2565,12 +2393,12 @@ cupsdSendHeader(
         }
        else
 #endif /* HAVE_AUTHORIZATION_H */
-       if (!strcasecmp(name, "@SYSTEM"))
+       if (!_cups_strcasecmp(name, "@SYSTEM"))
        {
 #ifdef HAVE_AUTHORIZATION_H
          if (SystemGroupAuthKey)
            snprintf(auth_key, auth_size,
-                    ", authkey=\"%s\", trc=\"y\"",
+                    ", authkey=\"%s\"",
                     SystemGroupAuthKey);
           else
 #else
@@ -2583,94 +2411,24 @@ cupsdSendHeader(
 
     if (auth_str[0])
     {
-      cupsdLogMessage(CUPSD_LOG_DEBUG,
-                      "cupsdSendHeader: %d WWW-Authenticate: %s", con->http.fd,
-                      auth_str);
-
-      if (httpPrintf(HTTP(con), "WWW-Authenticate: %s\r\n", auth_str) < 0)
-        return (0);
-    }
-  }
-
-#ifdef HAVE_GSSAPI
- /*
-  * WWW-Authenticate: Negotiate can be included even for
-  * non-401 replies...
-  */
-
-  if (con->gss_output_token.length > 0 && con->gss_output_token.length <= 65536)
-  {
-    OM_uint32  minor_status;           /* Minor status code */
-    int                bufsize;                /* Size of output token buffer */
-
-
-    bufsize = con->gss_output_token.length * 4 / 3 + 2;
-
-    if (bufsize > gss_bufsize)
-    {
-      char     *buf;                   /* New buffer */
-
-
-      bufsize = (bufsize + 1023) & 1023;/* Round up */
-
-      if (gss_buf)
-        buf = realloc(gss_buf, bufsize);
-      else
-        buf = malloc(bufsize);
-
-      if (!buf)
-      {
-       cupsdLogMessage(CUPSD_LOG_ERROR,
-                       "Unable to allocate %d bytes for Kerberos credentials!",
-                       bufsize);
-       return (0);
-      }
+      cupsdLogClient(con, CUPSD_LOG_DEBUG, "WWW-Authenticate: %s", auth_str);
 
-      gss_buf     = buf;
-      gss_bufsize = bufsize;
+      httpSetField(con->http, HTTP_FIELD_WWW_AUTHENTICATE, auth_str);
     }
-
-    httpEncode64_2(gss_buf, gss_bufsize,
-                  con->gss_output_token.value,
-                  con->gss_output_token.length);
-    gss_release_buffer(&minor_status, &con->gss_output_token);
-
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "cupsdSendHeader: WWW-Authenticate: Negotiate %s", gss_buf);
-
-    if (httpPrintf(HTTP(con), "WWW-Authenticate: Negotiate %s\r\n",
-                   gss_buf) < 0)
-      return (0);
-  }
-  else if (con->gss_output_token.length > 65536)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Kerberos credentials larger than 64k (%d)!",
-                   (int)con->gss_output_token.length);
-    return (0);
   }
-#endif /* HAVE_GSSAPI */
 
   if (con->language && strcmp(con->language->language, "C"))
-  {
-    if (httpPrintf(HTTP(con), "Content-Language: %s\r\n",
-                   con->language->language) < 0)
-      return (0);
-  }
+    httpSetField(con->http, HTTP_FIELD_CONTENT_LANGUAGE, con->language->language);
 
   if (type)
   {
     if (!strcmp(type, "text/html"))
-    {
-      if (httpPrintf(HTTP(con),
-                     "Content-Type: text/html; charset=utf-8\r\n") < 0)
-        return (0);
-    }
-    else if (httpPrintf(HTTP(con), "Content-Type: %s\r\n", type) < 0)
-      return (0);
+      httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, "text/html; charset=utf-8");
+    else
+      httpSetField(con->http, HTTP_FIELD_CONTENT_TYPE, type);
   }
 
-  return (1);
+  return (!httpWriteResponse(con->http, code));
 }
 
 
@@ -2723,24 +2481,35 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
   ipp_state_t  ipp_state;              /* IPP state value */
 
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "cupsdWriteClient(con=%p(%d)) response=%p(%d), file=%d "
-                 "pipe_pid=%d state=%d",
-                  con, con->http.fd, con->response,
-                 con->response ? con->response->state : -1,
-                 con->file, con->pipe_pid, con->http.state);
-
-  if (con->http.state != HTTP_GET_SEND &&
-      con->http.state != HTTP_POST_SEND)
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "con->http=%p", con->http);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                "cupsdWriteClient "
+                "error=%d, "
+                "used=%d, "
+                "state=%s, "
+                "data_encoding=HTTP_ENCODING_%s, "
+                "data_remaining=" CUPS_LLFMT ", "
+                "response=%p(%s), "
+                "pipe_pid=%d, "
+                "file=%d",
+                httpError(con->http), (int)httpGetReady(con->http),
+                httpStateString(httpGetState(con->http)),
+                httpIsChunked(con->http) ? "CHUNKED" : "LENGTH",
+                CUPS_LLCAST httpGetLength2(con->http),
+                con->response,
+                con->response ? ippStateString(ippGetState(con->request)) : "",
+                con->pipe_pid, con->file);
+
+  if (httpGetState(con->http) != HTTP_STATE_GET_SEND &&
+      httpGetState(con->http) != HTTP_STATE_POST_SEND)
   {
    /*
     * If we get called in the wrong state, then something went wrong with the
     * connection and we need to shut it down...
     */
 
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "cupsdWriteClient: %d Closing on unknown HTTP state %d",
-                   con->http.fd, con->http.state);
+    cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing on unexpected HTTP write state %s.",
+                  httpStateString(httpGetState(con->http)));
     cupsdCloseClient(con);
     return;
   }
@@ -2753,27 +2522,71 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
 
     cupsdAddSelect(con->file, (cupsd_selfunc_t)write_pipe, NULL, con);
 
+    cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for CGI data.");
+
     if (!con->file_ready)
     {
      /*
       * Try again later when there is CGI output available...
       */
 
-      cupsdRemoveSelect(con->http.fd);
+      cupsdRemoveSelect(httpGetFd(con->http));
       return;
     }
 
     con->file_ready = 0;
   }
 
-  if (con->response && con->response->state != IPP_DATA)
+  bytes = (ssize_t)(sizeof(con->header) - (size_t)con->header_used);
+
+  if (!con->pipe_pid && bytes > (ssize_t)httpGetRemaining(con->http))
+  {
+   /*
+    * Limit GET bytes to original size of file (STR #3265)...
+    */
+
+    bytes = (ssize_t)httpGetRemaining(con->http);
+  }
+
+  if (con->response && con->response->state != IPP_STATE_DATA)
   {
-    ipp_state = ippWrite(HTTP(con), con->response);
-    bytes     = ipp_state != IPP_ERROR &&
-                (con->file >= 0 || ipp_state != IPP_DATA);
+    size_t wused = httpGetPending(con->http);  /* Previous write buffer use */
+
+    do
+    {
+     /*
+      * Write a single attribute or the IPP message header...
+      */
+
+      ipp_state = ippWrite(con->http, con->response);
+
+     /*
+      * If the write buffer has been flushed, stop buffering up attributes...
+      */
+
+      if (httpGetPending(con->http) <= wused)
+        break;
+    }
+    while (ipp_state != IPP_STATE_DATA && ipp_state != IPP_STATE_ERROR);
+
+    cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                   "Writing IPP response, ipp_state=%s, old "
+                   "wused=" CUPS_LLFMT ", new wused=" CUPS_LLFMT,
+                   ippStateString(ipp_state),
+                  CUPS_LLCAST wused, CUPS_LLCAST httpGetPending(con->http));
+
+    if (httpGetPending(con->http) > 0)
+      httpFlushWrite(con->http);
+
+    bytes = ipp_state != IPP_STATE_ERROR &&
+           (con->file >= 0 || ipp_state != IPP_STATE_DATA);
+
+    cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                   "bytes=%d, http_state=%d, data_remaining=" CUPS_LLFMT,
+                   (int)bytes, httpGetState(con->http),
+                   CUPS_LLCAST httpGetLength2(con->http));
   }
-  else if ((bytes = read(con->file, con->header,
-                        sizeof(con->header) - con->header_used)) > 0)
+  else if ((bytes = read(con->file, con->header + con->header_used, (size_t)bytes)) > 0)
   {
     con->header_used += bytes;
 
@@ -2798,7 +2611,7 @@ cupsdWriteClient(cupsd_client_t *con)     /* I - Client connection */
            bufptr[-1] = '\0';
          *bufptr++ = '\0';
 
-          cupsdLogMessage(CUPSD_LOG_DEBUG, "Script header: %s", con->header);
+          cupsdLogClient(con, CUPSD_LOG_DEBUG, "Script header: %s", con->header);
 
           if (!con->sent_header)
          {
@@ -2806,36 +2619,43 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
            * Handle redirection and CGI status codes...
            */
 
-            if (!strncasecmp(con->header, "Location:", 9))
+           http_field_t field;         /* HTTP field */
+           char        *value = strchr(con->header, ':');
+                                       /* Value of field */
+
+           if (value)
            {
-             cupsdSendHeader(con, HTTP_SEE_OTHER, NULL, CUPSD_AUTH_NONE);
-             con->sent_header = 2;
+             *value++ = '\0';
+             while (isspace(*value & 255))
+               value ++;
+           }
 
-             if (httpPrintf(HTTP(con), "Content-Length: 0\r\n") < 0)
-               return;
+           field = httpFieldValue(con->header);
+
+           if (field != HTTP_FIELD_UNKNOWN && value)
+           {
+             httpSetField(con->http, field, value);
+
+             if (field == HTTP_FIELD_LOCATION)
+             {
+               con->pipe_status = HTTP_STATUS_SEE_OTHER;
+               con->sent_header = 2;
+             }
+             else
+               con->sent_header = 1;
            }
-           else if (!strncasecmp(con->header, "Status:", 7))
+           else if (!_cups_strcasecmp(con->header, "Status") && value)
            {
-             cupsdSendError(con, (http_status_t)atoi(con->header + 7),
-                            CUPSD_AUTH_NONE);
+             con->pipe_status = (http_status_t)atoi(value);
              con->sent_header = 2;
            }
-           else
+           else if (!_cups_strcasecmp(con->header, "Set-Cookie") && value)
            {
-             cupsdSendHeader(con, HTTP_OK, NULL, CUPSD_AUTH_NONE);
+             httpSetCookie(con->http, value);
              con->sent_header = 1;
-
-             if (con->http.version == HTTP_1_1)
-             {
-               if (httpPrintf(HTTP(con), "Transfer-Encoding: chunked\r\n") < 0)
-                 return;
-             }
-            }
+           }
          }
 
-         if (strncasecmp(con->header, "Status:", 7))
-           httpPrintf(HTTP(con), "%s\r\n", con->header);
-
          /*
          * Update buffer...
          */
@@ -2843,7 +2663,7 @@ cupsdWriteClient(cupsd_client_t *con)     /* I - Client connection */
          con->header_used -= bufptr - con->header;
 
          if (con->header_used > 0)
-           memmove(con->header, bufptr, con->header_used);
+           memmove(con->header, bufptr, (size_t)con->header_used);
 
          bufptr = con->header - 1;
 
@@ -2855,14 +2675,28 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
          {
            con->got_fields = 1;
 
-            if (cupsdFlushHeader(con) < 0)
+           if (httpGetVersion(con->http) == HTTP_VERSION_1_1 &&
+               !httpGetField(con->http, HTTP_FIELD_CONTENT_LENGTH)[0])
+             httpSetLength(con->http, 0);
+
+            cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending status %d for CGI.", con->pipe_status);
+
+            if (con->pipe_status == HTTP_STATUS_OK)
            {
-             cupsdCloseClient(con);
-             return;
+             if (!cupsdSendHeader(con, con->pipe_status, NULL, CUPSD_AUTH_NONE))
+             {
+               cupsdCloseClient(con);
+               return;
+             }
+           }
+           else
+           {
+             if (!cupsdSendError(con, con->pipe_status, CUPSD_AUTH_NONE))
+             {
+               cupsdCloseClient(con);
+               return;
+             }
            }
-
-           if (con->http.version == HTTP_1_1)
-             con->http.data_encoding = HTTP_ENCODE_CHUNKED;
           }
          else
            field_col = 0;
@@ -2872,30 +2706,25 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
       }
 
       if (!con->got_fields)
-      {
-        con->http.activity = time(NULL);
         return;
-      }
     }
 
     if (con->header_used > 0)
     {
-      if (httpWrite2(HTTP(con), con->header, con->header_used) < 0)
+      if (httpWrite2(con->http, con->header, (size_t)con->header_used) < 0)
       {
-       cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "cupsdWriteClient: %d Closing for error %d (%s)",
-                       con->http.fd, con->http.error,
-                       strerror(con->http.error));
+       cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)",
+                      httpError(con->http), strerror(httpError(con->http)));
        cupsdCloseClient(con);
        return;
       }
 
-      if (con->http.data_encoding == HTTP_ENCODE_CHUNKED)
-        httpFlushWrite(HTTP(con));
+      if (httpIsChunked(con->http))
+        httpFlushWrite(con->http);
 
       con->bytes += con->header_used;
 
-      if (con->http.state == HTTP_WAITING)
+      if (httpGetState(con->http) == HTTP_STATE_WAITING)
        bytes = 0;
       else
         bytes = con->header_used;
@@ -2905,33 +2734,36 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
   }
 
   if (bytes <= 0 ||
-      (con->http.state != HTTP_GET_SEND && con->http.state != HTTP_POST_SEND))
+      (httpGetState(con->http) != HTTP_STATE_GET_SEND &&
+       httpGetState(con->http) != HTTP_STATE_POST_SEND))
   {
     if (!con->sent_header && con->pipe_pid)
-      cupsdSendError(con, HTTP_SERVER_ERROR, CUPSD_AUTH_NONE);
+      cupsdSendError(con, HTTP_STATUS_SERVER_ERROR, CUPSD_AUTH_NONE);
     else
     {
-      cupsdLogRequest(con, HTTP_OK);
-
-      httpFlushWrite(HTTP(con));
+      cupsdLogRequest(con, HTTP_STATUS_OK);
 
-      if (con->http.data_encoding == HTTP_ENCODE_CHUNKED && con->sent_header == 1)
+      if (httpIsChunked(con->http) && (!con->pipe_pid || con->sent_header > 0))
       {
-       if (httpWrite2(HTTP(con), "", 0) < 0)
+        cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending 0-length chunk.");
+
+       if (httpWrite2(con->http, "", 0) < 0)
        {
-         cupsdLogMessage(CUPSD_LOG_DEBUG,
-                         "cupsdWriteClient: %d Closing for error %d (%s)",
-                         con->http.fd, con->http.error,
-                         strerror(con->http.error));
+         cupsdLogClient(con, CUPSD_LOG_DEBUG, "Closing for error %d (%s)",
+                        httpError(con->http), strerror(httpError(con->http)));
          cupsdCloseClient(con);
          return;
        }
       }
+
+      cupsdLogClient(con, CUPSD_LOG_DEBUG, "Flushing write buffer.");
+      httpFlushWrite(con->http);
+      cupsdLogClient(con, CUPSD_LOG_DEBUG, "New state is %s", httpStateString(httpGetState(con->http)));
     }
 
-    con->http.state = HTTP_WAITING;
+    cupsdAddSelect(httpGetFd(con->http), (cupsd_selfunc_t)cupsdReadClient, NULL, con);
 
-    cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient, NULL, con);
+    cupsdLogClient(con, CUPSD_LOG_DEBUG, "Waiting for request.");
 
     if (con->file >= 0)
     {
@@ -2967,11 +2799,10 @@ cupsdWriteClient(cupsd_client_t *con)   /* I - Client connection */
     cupsdClearString(&con->options);
     cupsdClearString(&con->query_string);
 
-    if (!con->http.keep_alive)
+    if (!httpGetKeepAlive(con->http))
     {
-      cupsdLogMessage(CUPSD_LOG_DEBUG,
-                     "cupsdWriteClient: %d Closing because Keep-Alive disabled",
-                     con->http.fd);
+      cupsdLogClient(con, CUPSD_LOG_DEBUG,
+                    "Closing because Keep-Alive is disabled.");
       cupsdCloseClient(con);
       return;
     }
@@ -2981,8 +2812,6 @@ cupsdWriteClient(cupsd_client_t *con)     /* I - Client connection */
       cupsdSetBusyState();
     }
   }
-
-  con->http.activity = time(NULL);
 }
 
 
@@ -2995,30 +2824,26 @@ check_if_modified(
     cupsd_client_t *con,               /* I - Client connection */
     struct stat    *filestats)         /* I - File information */
 {
-  char         *ptr;                   /* Pointer into field */
+  const char   *ptr;                   /* Pointer into field */
   time_t       date;                   /* Time/date value */
   off_t                size;                   /* Size/length value */
 
 
   size = 0;
   date = 0;
-  ptr  = con->http.fields[HTTP_FIELD_IF_MODIFIED_SINCE];
+  ptr  = httpGetField(con->http, HTTP_FIELD_IF_MODIFIED_SINCE);
 
   if (*ptr == '\0')
     return (1);
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "check_if_modified(con=%p(%d), "
-                 "filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"",
-                  con, con->http.fd, filestats, CUPS_LLCAST filestats->st_size,
-                 (int)filestats->st_mtime, ptr);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "check_if_modified: filestats=%p(" CUPS_LLFMT ", %d)) If-Modified-Since=\"%s\"", filestats, CUPS_LLCAST filestats->st_size, (int)filestats->st_mtime, ptr);
 
   while (*ptr != '\0')
   {
     while (isspace(*ptr) || *ptr == ';')
       ptr ++;
 
-    if (strncasecmp(ptr, "length=", 7) == 0)
+    if (_cups_strncasecmp(ptr, "length=", 7) == 0)
     {
       ptr += 7;
       size = strtoll(ptr, NULL, 10);
@@ -3062,575 +2887,106 @@ compare_clients(cupsd_client_t *a,    /* I - First client */
 }
 
 
+#ifdef HAVE_SSL
 /*
- * 'data_ready()' - Check whether data is available from a client.
+ * 'cupsd_start_tls()' - Start encryption on a connection.
  */
 
-static int                             /* O - 1 if data is ready, 0 otherwise */
-data_ready(cupsd_client_t *con)                /* I - Client */
+static int                             /* O - 0 on success, -1 on error */
+cupsd_start_tls(cupsd_client_t    *con,        /* I - Client connection */
+                http_encryption_t e)   /* I - Encryption mode */
 {
-  if (con->http.used > 0)
-    return (1);
-#ifdef HAVE_SSL
-  else if (con->http.tls)
+  if (httpEncryption(con->http, e))
   {
-#  ifdef HAVE_LIBSSL
-    if (SSL_pending((SSL *)(con->http.tls)))
-      return (1);
-#  elif defined(HAVE_GNUTLS)
-    if (gnutls_record_check_pending(con->http.tls))
-      return (1);
-#  elif defined(HAVE_CDSASSL)
-    size_t bytes;                      /* Bytes that are available */
-
-    if (!SSLGetBufferedReadSize(con->http.tls, &bytes) && bytes > 0)
-      return (1);
-#  endif /* HAVE_LIBSSL */
+    cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to encrypt connection: %s",
+                   cupsLastErrorString());
+    return (-1);
   }
-#endif /* HAVE_SSL */
 
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Connection now encrypted.");
   return (0);
 }
+#endif /* HAVE_SSL */
 
 
-#ifdef HAVE_SSL
 /*
- * 'encrypt_client()' - Enable encryption for the client...
+ * 'get_file()' - Get a filename and state info.
  */
 
-static int                             /* O - 1 on success, 0 on error */
-encrypt_client(cupsd_client_t *con)    /* I - Client to encrypt */
+static char *                          /* O  - Real filename */
+get_file(cupsd_client_t *con,          /* I  - Client connection */
+         struct stat    *filestats,    /* O  - File information */
+         char           *filename,     /* IO - Filename buffer */
+         size_t         len)           /* I  - Buffer length */
 {
-#  ifdef HAVE_LIBSSL
-  SSL_CTX      *context;               /* Context for encryption */
-  BIO          *bio;                   /* BIO data */
-  unsigned long        error;                  /* Error code */
-
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG2, "encrypt_client(con=%p(%d))", con,
-                  con->http.fd);
-
- /*
-  * Verify that we have a certificate...
-  */
-
-  if (access(ServerKey, 0) || access(ServerCertificate, 0))
-  {
-   /*
-    * Nope, make a self-signed certificate...
-    */
-
-    if (!make_certificate(con))
-      return (0);
-  }
-
- /*
-  * Create the SSL context and accept the connection...
-  */
-
-  context = SSL_CTX_new(SSLv23_server_method());
-
-  SSL_CTX_set_options(context, SSL_OP_NO_SSLv2); /* Only use SSLv3 or TLS */
-  if (SSLOptions & CUPSD_SSL_NOEMPTY)
-    SSL_CTX_set_options(context, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
-  SSL_CTX_use_PrivateKey_file(context, ServerKey, SSL_FILETYPE_PEM);
-  SSL_CTX_use_certificate_chain_file(context, ServerCertificate);
-
-  bio = BIO_new(_httpBIOMethods());
-  BIO_ctrl(bio, BIO_C_SET_FILE_PTR, 0, (char *)HTTP(con));
-
-  con->http.tls = SSL_new(context);
-  SSL_set_bio(con->http.tls, bio, bio);
-
-  if (SSL_accept(con->http.tls) != 1)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to encrypt connection from %s!",
-                    con->http.hostname);
-
-    while ((error = ERR_get_error()) != 0)
-      cupsdLogMessage(CUPSD_LOG_ERROR, "%s", ERR_error_string(error, NULL));
-
-    SSL_CTX_free(context);
-    SSL_free(con->http.tls);
-    con->http.tls = NULL;
-    return (0);
-  }
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG, "Connection from %s now encrypted.",
-                  con->http.hostname);
-
-  return (1);
-
-#  elif defined(HAVE_GNUTLS)
-  int          error;                  /* Error code */
-  gnutls_certificate_server_credentials *credentials;
-                                       /* TLS credentials */
-
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG2, "encrypt_client(con=%p(%d))", con,
-                  con->http.fd);
-
- /*
-  * Verify that we have a certificate...
-  */
-
-  if (access(ServerKey, 0) || access(ServerCertificate, 0))
-  {
-   /*
-    * Nope, make a self-signed certificate...
-    */
+  int          status;                 /* Status of filesystem calls */
+  char         *ptr;                   /* Pointer info filename */
+  size_t       plen;                   /* Remaining length after pointer */
+  char         language[7],            /* Language subdirectory, if any */
+               dest[1024];             /* Destination name */
+  int          perm_check = 1;         /* Do permissions check? */
 
-    if (!make_certificate(con))
-      return (0);
-  }
 
  /*
-  * Create the SSL object and perform the SSL handshake...
+  * Figure out the real filename...
   */
 
-  credentials = (gnutls_certificate_server_credentials *)
-                    malloc(sizeof(gnutls_certificate_server_credentials));
-  if (credentials == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to encrypt connection from %s - %s",
-                    con->http.hostname, strerror(errno));
-
-    return (0);
-  }
-
-  gnutls_certificate_allocate_credentials(credentials);
-  gnutls_certificate_set_x509_key_file(*credentials, ServerCertificate,
-                                      ServerKey, GNUTLS_X509_FMT_PEM);
-
-  gnutls_init(&con->http.tls), GNUTLS_SERVER);
-  gnutls_set_default_priority(con->http.tls);
-  gnutls_credentials_set(con->http.tls, GNUTLS_CRD_CERTIFICATE, *credentials);
-  gnutls_transport_set_ptr(con->http.tls, (gnutls_transport_ptr)HTTP(con));
-  gnutls_transport_set_pull_function(con->http.tls, _httpReadGNUTLS);
-  gnutls_transport_set_push_function(con->http.tls, _httpWriteGNUTLS);
-
-  error = gnutls_handshake(con->http.tls);
-
-  if (error != GNUTLS_E_SUCCESS)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to encrypt connection from %s - %s",
-                    con->http.hostname, gnutls_strerror(error));
-
-    gnutls_deinit(con->http.tls);
-    gnutls_certificate_free_credentials(*credentials);
-    con->http.tls = NULL;
-    free(credentials);
-    return (0);
-  }
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG, "Connection from %s now encrypted.",
-                  con->http.hostname);
-
-  con->http.tls_credentials = credentials;
-  return (1);
-
-#  elif defined(HAVE_CDSASSL)
-  OSStatus     error;                  /* Error code */
-
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG2, "encrypt_client(con=%p(%d))", con,
-                  con->http.fd);
-
-  error                     = 0;
-  con->http.tls_credentials = get_cdsa_certificate(con);
-
-  if (!con->http.tls_credentials)
-  {
-   /*
-    * No keychain (yet), make a self-signed certificate...
-    */
-
-    if (make_certificate(con))
-      con->http.tls_credentials = get_cdsa_certificate(con);
-  }
-
-  if (!con->http.tls_credentials)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                   "Could not find signing key in keychain \"%s\"",
-                   ServerCertificate);
-    error = errSSLBadCert; /* errSSLBadConfiguration is a better choice, but not available on 10.2.x */
-  }
-
-  if (!error)
-    error = SSLNewContext(true, &con->http.tls);
-
-  if (!error)
-    error = SSLSetIOFuncs(con->http.tls, _httpReadCDSA, _httpWriteCDSA);
-
-  if (!error)
-    error = SSLSetProtocolVersionEnabled(con->http.tls, kSSLProtocol2, false);
-
-  if (!error)
-    error = SSLSetConnection(con->http.tls, HTTP(con));
-
-  if (!error)
-    error = SSLSetAllowsExpiredCerts(con->http.tls, true);
-
-  if (!error)
-    error = SSLSetAllowsAnyRoot(con->http.tls, true);
-
-  if (!error)
-    error = SSLSetCertificate(con->http.tls, con->http.tls_credentials);
-
-  if (!error)
-  {
-   /*
-    * Perform SSL/TLS handshake
-    */
-
-    while ((error = SSLHandshake(con->http.tls)) == errSSLWouldBlock)
-      usleep(1000);
-  }
+  language[0] = '\0';
 
-  if (error)
+  if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/'))
   {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to encrypt connection from %s - %s (%d)",
-                    con->http.hostname, cssmErrorString(error), (int)error);
+    strlcpy(dest, con->uri + 5, sizeof(dest));
+    ptr = dest + strlen(dest) - 4;
 
-    con->http.error  = error;
-    con->http.status = HTTP_ERROR;
-
-    if (con->http.tls)
+    if (ptr <= dest || strcmp(ptr, ".ppd"))
     {
-      SSLDisposeContext(con->http.tls);
-      con->http.tls = NULL;
-    }
-
-    if (con->http.tls_credentials)
-    {
-      CFRelease(con->http.tls_credentials);
-      con->http.tls_credentials = NULL;
+      cupsdLogClient(con, CUPSD_LOG_INFO, "Disallowed path \"%s\".", con->uri);
+      return (NULL);
     }
 
-    return (0);
-  }
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG, "Connection from %s now encrypted.",
-                  con->http.hostname);
-
-  CFArrayRef           peerCerts;      /* Peer certificates */
-
-  if (!(error = SSLCopyPeerCertificates(con->http.tls, &peerCerts)) && peerCerts)
-  {
-    cupsdLogMessage(CUPSD_LOG_DEBUG, "Received %d peer certificates!",
-                   (int)CFArrayGetCount(peerCerts));
-  }
-  else
-    cupsdLogMessage(CUPSD_LOG_DEBUG, "Received NO peer certificates!");
-
-  return (1);
-
-#  endif /* HAVE_LIBSSL */
-}
-#endif /* HAVE_SSL */
-
-
-#ifdef HAVE_CDSASSL
-/*
- * 'get_cdsa_certificate()' - Get a SSL/TLS certificate from the System keychain.
- */
-
-static CFArrayRef                              /* O - Array of certificates */
-get_cdsa_certificate(
-    cupsd_client_t *con)                       /* I - Client connection */
-{
-  OSStatus             err;            /* Error info */
-  SecKeychainRef       keychain = NULL;/* Keychain reference */
-  SecIdentitySearchRef search = NULL;  /* Search reference */
-  SecIdentityRef       identity = NULL;/* Identity */
-  CFArrayRef           certificates = NULL;
-                                       /* Certificate array */
-#  if HAVE_SECPOLICYCREATESSL
-  SecPolicyRef         policy = NULL;  /* Policy ref */
-  CFStringRef          servername = NULL;
-                                       /* Server name */
-  CFMutableDictionaryRef query = NULL; /* Query qualifiers */
-  char                 localname[1024];/* Local hostname */
-#  elif defined(HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY)
-  SecPolicyRef         policy = NULL;  /* Policy ref */
-  SecPolicySearchRef   policy_search = NULL;
-                                       /* Policy search ref */
-  CSSM_DATA            options;        /* Policy options */
-  CSSM_APPLE_TP_SSL_OPTIONS
-                       ssl_options;    /* SSL Option for hostname */
-  char                 localname[1024];/* Local hostname */
-#  endif /* HAVE_SECPOLICYCREATESSL */
-
-
-  cupsdLogMessage(CUPSD_LOG_DEBUG,
-                  "get_cdsa_certificate: Looking for certs for \"%s\"...",
-                 con->servername);
-
-  if ((err = SecKeychainOpen(ServerCertificate, &keychain)))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot open keychain \"%s\" - %s (%d)",
-                   ServerCertificate, cssmErrorString(err), (int)err);
-    goto cleanup;
-  }
-
-#  if HAVE_SECPOLICYCREATESSL
-  servername = CFStringCreateWithCString(kCFAllocatorDefault, con->servername,
-                                        kCFStringEncodingUTF8);
-
-  if ((policy = SecPolicyCreateSSL(1, servername)) == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create ssl policy reference");
-    goto cleanup;
-  }
-
-  if (servername)
-    CFRelease(servername);
-
-  if (!(query = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
-                                         &kCFTypeDictionaryKeyCallBacks,
-                                         &kCFTypeDictionaryValueCallBacks)))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create query dictionary");
-    goto cleanup;
-  }
-
-  CFDictionaryAddValue(query, kSecClass, kSecClassIdentity);
-  CFDictionaryAddValue(query, kSecMatchPolicy, policy);
-  CFDictionaryAddValue(query, kSecReturnRef, kCFBooleanTrue);
-  CFDictionaryAddValue(query, kSecMatchLimit, kSecMatchLimitOne);
-
-  err = SecItemCopyMatching(query, (CFTypeRef *)&identity);
-
-  if (err && DNSSDHostName)
-  {
-   /*
-    * Search for the connection server name failed; try the DNS-SD .local
-    * hostname instead...
-    */
-
-    snprintf(localname, sizeof(localname), "%s.local", DNSSDHostName);
-
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "get_cdsa_certificate: Looking for certs for \"%s\"...",
-                   localname);
-
-    servername = CFStringCreateWithCString(kCFAllocatorDefault, localname,
-                                          kCFStringEncodingUTF8);
-  
-    CFRelease(policy);
-
-    if ((policy = SecPolicyCreateSSL(1, servername)) == NULL)
+    *ptr = '\0';
+    if (!cupsdFindPrinter(dest))
     {
-      cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create ssl policy reference");
-      goto cleanup;
+      cupsdLogClient(con, CUPSD_LOG_INFO, "No printer \"%s\" found.", dest);
+      return (NULL);
     }
 
-    if (servername)
-      CFRelease(servername);
-
-    CFDictionarySetValue(query, kSecMatchPolicy, policy);
-
-    err = SecItemCopyMatching(query, (CFTypeRef *)&identity);
-  }
-
-  if (err)
-  {
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "Cannot find signing key in keychain \"%s\": %s (%d)",
-                   ServerCertificate, cssmErrorString(err), (int)err);
-    goto cleanup;
-  }
-
-#  elif defined(HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY)
- /*
-  * Use a policy to search for valid certificates whose common name matches the
-  * servername...
-  */
-
-  if (SecPolicySearchCreate(CSSM_CERT_X_509v3, &CSSMOID_APPLE_TP_SSL,
-                           NULL, &policy_search))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create a policy search reference");
-    goto cleanup;
-  }
+    snprintf(filename, len, "%s%s", ServerRoot, con->uri);
 
-  if (SecPolicySearchCopyNext(policy_search, &policy))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                   "Cannot find a policy to use for searching");
-    goto cleanup;
+    perm_check = 0;
   }
-
-  memset(&ssl_options, 0, sizeof(ssl_options));
-  ssl_options.Version = CSSM_APPLE_TP_SSL_OPTS_VERSION;
-  ssl_options.ServerName = con->servername;
-  ssl_options.ServerNameLen = strlen(con->servername);
-
-  options.Data = (uint8 *)&ssl_options;
-  options.Length = sizeof(ssl_options);
-
-  if (SecPolicySetValue(policy, &options))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                   "Cannot set policy value to use for searching");
-    goto cleanup;
-  }
-
-  if ((err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
-                                              keychain, FALSE, &search)))
+  else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/'))
   {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                   "Cannot create identity search reference: %s (%d)",
-                   cssmErrorString(err), (int)err);
-    goto cleanup;
-  }
-
-  err = SecIdentitySearchCopyNext(search, &identity);
+    strlcpy(dest, con->uri + 7, sizeof(dest));
+    ptr = dest + strlen(dest) - 4;
 
-  if (err && DNSSDHostName)
-  {
-   /*
-    * Search for the connection server name failed; try the DNS-SD .local
-    * hostname instead...
-    */
-
-    snprintf(localname, sizeof(localname), "%s.local", DNSSDHostName);
-
-    ssl_options.ServerName    = localname;
-    ssl_options.ServerNameLen = strlen(localname);
-
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "get_cdsa_certificate: Looking for certs for \"%s\"...",
-                   localname);
-
-    if (SecPolicySetValue(policy, &options))
+    if (ptr <= dest || strcmp(ptr, ".png"))
     {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                     "Cannot set policy value to use for searching");
-      goto cleanup;
+      cupsdLogClient(con, CUPSD_LOG_INFO, "Disallowed path \"%s\".", con->uri);
+      return (NULL);
     }
 
-    CFRelease(search);
-    search = NULL;
-    if ((err = SecIdentitySearchCreateWithPolicy(policy, NULL, CSSM_KEYUSE_SIGN,
-                                              keychain, FALSE, &search)))
+    *ptr = '\0';
+    if (!cupsdFindDest(dest))
     {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                     "Cannot create identity search reference: %s (%d)",
-                     cssmErrorString(err), (int)err);
-      goto cleanup;
+      cupsdLogClient(con, CUPSD_LOG_INFO, "No printer \"%s\" found.", dest);
+      return (NULL);
     }
 
-    err = SecIdentitySearchCopyNext(search, &identity);
-
-  }
-
-  if (err)
-  {
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "Cannot find signing key in keychain \"%s\": %s (%d)",
-                   ServerCertificate, cssmErrorString(err), (int)err);
-    goto cleanup;
-  }
-
-#  else
- /*
-  * Assume there is exactly one SecIdentity in the keychain...
-  */
-
-  if ((err = SecIdentitySearchCreate(keychain, CSSM_KEYUSE_SIGN, &search)))
-  {
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "Cannot create identity search reference (%d)", (int)err);
-    goto cleanup;
-  }
-
-  if ((err = SecIdentitySearchCopyNext(search, &identity)))
-  {
-    cupsdLogMessage(CUPSD_LOG_DEBUG,
-                   "Cannot find signing key in keychain \"%s\": %s (%d)",
-                   ServerCertificate, cssmErrorString(err), (int)err);
-    goto cleanup;
-  }
-#  endif /* HAVE_SECPOLICYCREATESSL */
-
-  if (CFGetTypeID(identity) != SecIdentityGetTypeID())
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "SecIdentity CFTypeID failure!");
-    goto cleanup;
-  }
-
-  if ((certificates = CFArrayCreate(NULL, (const void **)&identity,
-                                 1, &kCFTypeArrayCallBacks)) == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Cannot create certificate array");
-    goto cleanup;
-  }
-
-  cleanup :
-
-  if (keychain)
-    CFRelease(keychain);
-  if (search)
-    CFRelease(search);
-  if (identity)
-    CFRelease(identity);
-
-#  if HAVE_SECPOLICYCREATESSL
-  if (policy)
-    CFRelease(policy);
-  if (query)
-    CFRelease(query);
-#  elif defined(HAVE_SECIDENTITYSEARCHCREATEWITHPOLICY)
-  if (policy)
-    CFRelease(policy);
-  if (policy_search)
-    CFRelease(policy_search);
-#  endif /* HAVE_SECPOLICYCREATESSL */
-
-  return (certificates);
-}
-#endif /* HAVE_CDSASSL */
-
-
-/*
- * 'get_file()' - Get a filename and state info.
- */
-
-static char *                          /* O  - Real filename */
-get_file(cupsd_client_t *con,          /* I  - Client connection */
-         struct stat    *filestats,    /* O  - File information */
-         char           *filename,     /* IO - Filename buffer */
-         int            len)           /* I  - Buffer length */
-{
-  int          status;                 /* Status of filesystem calls */
-  char         *ptr;                   /* Pointer info filename */
-  int          plen;                   /* Remaining length after pointer */
-  char         language[7];            /* Language subdirectory, if any */
-
-
- /*
-  * Figure out the real filename...
-  */
-
-  language[0] = '\0';
-
-  if (!strncmp(con->uri, "/ppd/", 5) && !strchr(con->uri + 5, '/'))
-    snprintf(filename, len, "%s%s", ServerRoot, con->uri);
-  else if (!strncmp(con->uri, "/icons/", 7) && !strchr(con->uri + 7, '/'))
-  {
-    snprintf(filename, len, "%s/%s", CacheDir, con->uri + 7);
+    snprintf(filename, len, "%s/%s.png", CacheDir, dest);
     if (access(filename, F_OK) < 0)
       snprintf(filename, len, "%s/images/generic.png", DocumentRoot);
+
+    perm_check = 0;
   }
   else if (!strncmp(con->uri, "/rss/", 5) && !strchr(con->uri + 5, '/'))
     snprintf(filename, len, "%s/rss/%s", CacheDir, con->uri + 5);
-  else if (!strncmp(con->uri, "/admin/conf/", 12))
-    snprintf(filename, len, "%s%s", ServerRoot, con->uri + 11);
+  else if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
+  {
+    strlcpy(filename, ConfigurationFile, len);
+
+    perm_check = 0;
+  }
   else if (!strncmp(con->uri, "/admin/log/", 11))
   {
     if (!strncmp(con->uri + 11, "access_log", 10) && AccessLog[0] == '/')
@@ -3641,6 +2997,8 @@ get_file(cupsd_client_t *con,             /* I  - Client connection */
       strlcpy(filename, PageLog, len);
     else
       return (NULL);
+
+    perm_check = 0;
   }
   else if (con->language)
   {
@@ -3658,7 +3016,7 @@ get_file(cupsd_client_t *con,             /* I  - Client connection */
   * then fallback to the default one...
   */
 
-  if ((status = stat(filename, filestats)) != 0 && language[0] &&
+  if ((status = lstat(filename, filestats)) != 0 && language[0] &&
       strncmp(con->uri, "/icons/", 7) &&
       strncmp(con->uri, "/ppd/", 5) &&
       strncmp(con->uri, "/rss/", 5) &&
@@ -3675,7 +3033,7 @@ get_file(cupsd_client_t *con,             /* I  - Client connection */
     if ((ptr = strchr(filename, '?')) != NULL)
       *ptr = '\0';
 
-    if ((status = stat(filename, filestats)) != 0)
+    if ((status = lstat(filename, filestats)) != 0)
     {
      /*
       * Drop the language prefix and try the root directory...
@@ -3687,12 +3045,33 @@ get_file(cupsd_client_t *con,           /* I  - Client connection */
       if ((ptr = strchr(filename, '?')) != NULL)
        *ptr = '\0';
 
-      status = stat(filename, filestats);
+      status = lstat(filename, filestats);
     }
   }
 
  /*
-  * If we're found a directory, get the index.html file instead...
+  * If we've found a symlink, 404 the sucker to avoid disclosing information.
+  */
+
+  if (!status && S_ISLNK(filestats->st_mode))
+  {
+    cupsdLogClient(con, CUPSD_LOG_INFO, "Symlinks such as \"%s\" are not allowed.", filename);
+    return (NULL);
+  }
+
+ /*
+  * Similarly, if the file/directory does not have world read permissions, do
+  * not allow access...
+  */
+
+  if (!status && perm_check && !(filestats->st_mode & S_IROTH))
+  {
+    cupsdLogClient(con, CUPSD_LOG_INFO, "Files/directories such as \"%s\" must be world-readable.", filename);
+    return (NULL);
+  }
+
+ /*
+  * If we've found a directory, get the index.html file instead...
   */
 
   if (!status && S_ISDIR(filestats->st_mode))
@@ -3732,16 +3111,16 @@ get_file(cupsd_client_t *con,           /* I  - Client connection */
        *ptr = '\0';
 
       ptr  = filename + strlen(filename);
-      plen = len - (ptr - filename);
+      plen = len - (size_t)(ptr - filename);
 
       strlcpy(ptr, "index.html", plen);
-      status = stat(filename, filestats);
+      status = lstat(filename, filestats);
 
 #ifdef HAVE_JAVA
       if (status)
       {
        strlcpy(ptr, "index.class", plen);
-       status = stat(filename, filestats);
+       status = lstat(filename, filestats);
       }
 #endif /* HAVE_JAVA */
 
@@ -3749,7 +3128,7 @@ get_file(cupsd_client_t *con,             /* I  - Client connection */
       if (status)
       {
        strlcpy(ptr, "index.pl", plen);
-       status = stat(filename, filestats);
+       status = lstat(filename, filestats);
       }
 #endif /* HAVE_PERL */
 
@@ -3757,7 +3136,7 @@ get_file(cupsd_client_t *con,             /* I  - Client connection */
       if (status)
       {
        strlcpy(ptr, "index.php", plen);
-       status = stat(filename, filestats);
+       status = lstat(filename, filestats);
       }
 #endif /* HAVE_PHP */
 
@@ -3765,24 +3144,42 @@ get_file(cupsd_client_t *con,           /* I  - Client connection */
       if (status)
       {
        strlcpy(ptr, "index.pyc", plen);
-       status = stat(filename, filestats);
+       status = lstat(filename, filestats);
       }
 
       if (status)
       {
        strlcpy(ptr, "index.py", plen);
-       status = stat(filename, filestats);
+       status = lstat(filename, filestats);
       }
 #endif /* HAVE_PYTHON */
 
     }
     while (status && language[0]);
+
+   /*
+    * If we've found a symlink, 404 the sucker to avoid disclosing information.
+    */
+
+    if (!status && S_ISLNK(filestats->st_mode))
+    {
+      cupsdLogClient(con, CUPSD_LOG_INFO, "Symlinks such as \"%s\" are not allowed.", filename);
+      return (NULL);
+    }
+
+   /*
+    * Similarly, if the file/directory does not have world read permissions, do
+    * not allow access...
+    */
+
+    if (!status && perm_check && !(filestats->st_mode & S_IROTH))
+    {
+      cupsdLogClient(con, CUPSD_LOG_INFO, "Files/directories such as \"%s\" must be world-readable.", filename);
+      return (NULL);
+    }
   }
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "get_file(con=%p(%d), filestats=%p, filename=%p, len=%d) = "
-                 "%s", con, con->http.fd, filestats, filename, len,
-                 status ? "(null)" : filename);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "get_file: filestats=%p, filename=%p, len=" CUPS_LLFMT ", returning \"%s\".", filestats, filename, CUPS_LLCAST len, status ? "(null)" : filename);
 
   if (status)
     return (NULL);
@@ -3792,165 +3189,102 @@ get_file(cupsd_client_t *con,         /* I  - Client connection */
 
 
 /*
- * 'install_conf_file()' - Install a configuration file.
+ * 'install_cupsd_conf()' - Install a configuration file.
  */
 
 static http_status_t                   /* O - Status */
-install_conf_file(cupsd_client_t *con) /* I - Connection */
+install_cupsd_conf(cupsd_client_t *con)        /* I - Connection */
 {
+  char         filename[1024];         /* Configuration filename */
   cups_file_t  *in,                    /* Input file */
                *out;                   /* Output file */
-  char         buffer[1024];           /* Copy buffer */
-  int          bytes;                  /* Number of bytes */
-  char         conffile[1024],         /* Configuration filename */
-               newfile[1024],          /* New config filename */
-               oldfile[1024];          /* Old config filename */
-  struct stat  confinfo;               /* Config file info */
-
-
- /*
-  * First construct the filenames...
-  */
+  char         buffer[16384];          /* Copy buffer */
+  ssize_t      bytes;                  /* Number of bytes */
 
-  snprintf(conffile, sizeof(conffile), "%s%s", ServerRoot, con->uri + 11);
-  snprintf(newfile, sizeof(newfile), "%s%s.N", ServerRoot, con->uri + 11);
-  snprintf(oldfile, sizeof(oldfile), "%s%s.O", ServerRoot, con->uri + 11);
-
-  cupsdLogMessage(CUPSD_LOG_INFO, "Installing config file \"%s\"...", conffile);
 
  /*
-  * Get the owner, group, and permissions of the configuration file.
-  * If it doesn't exist, assign it to the User and Group in the
-  * cupsd.conf file with mode 0640 permissions.
+  * Open the request file...
   */
 
-  if (stat(conffile, &confinfo))
+  if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
   {
-    confinfo.st_uid  = User;
-    confinfo.st_gid  = Group;
-    confinfo.st_mode = ConfigFilePerm;
+    cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to open request file \"%s\": %s",
+                    con->filename, strerror(errno));
+    goto server_error;
   }
 
  /*
-  * Open the request file and new config file...
+  * Open the new config file...
   */
 
-  if ((in = cupsFileOpen(con->filename, "rb")) == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open request file \"%s\" - %s",
-                    con->filename, strerror(errno));
-    return (HTTP_SERVER_ERROR);
-  }
-
-  if ((out = cupsFileOpen(newfile, "wb")) == NULL)
+  if ((out = cupsdCreateConfFile(ConfigurationFile, ConfigFilePerm)) == NULL)
   {
     cupsFileClose(in);
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to open config file \"%s\" - %s",
-                    newfile, strerror(errno));
-    return (HTTP_SERVER_ERROR);
+    goto server_error;
   }
 
-  fchmod(cupsFileNumber(out), confinfo.st_mode);
-  fchown(cupsFileNumber(out), confinfo.st_uid, confinfo.st_gid);
+  cupsdLogClient(con, CUPSD_LOG_INFO, "Installing config file \"%s\"...",
+                  ConfigurationFile);
 
  /*
   * Copy from the request to the new config file...
   */
 
   while ((bytes = cupsFileRead(in, buffer, sizeof(buffer))) > 0)
-    if (cupsFileWrite(out, buffer, bytes) < bytes)
+    if (cupsFileWrite(out, buffer, (size_t)bytes) < bytes)
     {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to copy to config file \"%s\" - %s",
-                     newfile, strerror(errno));
+      cupsdLogClient(con, CUPSD_LOG_ERROR,
+                      "Unable to copy to config file \"%s\": %s",
+                     ConfigurationFile, strerror(errno));
 
       cupsFileClose(in);
       cupsFileClose(out);
-      unlink(newfile);
-
-      return (HTTP_SERVER_ERROR);
-    }
-
- /*
-  * Close the files...
-  */
-
-  cupsFileClose(in);
-  if (cupsFileClose(out))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Error file closing config file \"%s\" - %s",
-                    newfile, strerror(errno));
-
-    unlink(newfile);
-
-    return (HTTP_SERVER_ERROR);
-  }
-
- /*
-  * Remove the request file...
-  */
-
-  unlink(con->filename);
-  cupsdClearString(&con->filename);
-
- /*
-  * Unlink the old backup, rename the current config file to the backup
-  * filename, and rename the new config file to the config file name...
-  */
-
-  if (unlink(oldfile))
-    if (errno != ENOENT)
-    {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to remove backup config file \"%s\" - %s",
-                     oldfile, strerror(errno));
-
-      unlink(newfile);
-
-      return (HTTP_SERVER_ERROR);
-    }
-
-  if (rename(conffile, oldfile))
-    if (errno != ENOENT)
-    {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to rename old config file \"%s\" - %s",
-                     conffile, strerror(errno));
 
-      unlink(newfile);
+      snprintf(filename, sizeof(filename), "%s.N", ConfigurationFile);
+      cupsdUnlinkOrRemoveFile(filename);
 
-      return (HTTP_SERVER_ERROR);
+      goto server_error;
     }
 
-  if (rename(newfile, conffile))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to rename new config file \"%s\" - %s",
-                    newfile, strerror(errno));
+ /*
+  * Close the files...
+  */
 
-    rename(oldfile, conffile);
-    unlink(newfile);
+  cupsFileClose(in);
 
-    return (HTTP_SERVER_ERROR);
-  }
+  if (cupsdCloseCreatedConfFile(out, ConfigurationFile))
+    goto server_error;
 
  /*
-  * If the cupsd.conf file was updated, set the NeedReload flag...
+  * Remove the request file...
   */
 
-  if (!strcmp(con->uri, "/admin/conf/cupsd.conf"))
-    NeedReload = RELOAD_CUPSD;
-  else
-    NeedReload = RELOAD_ALL;
+  cupsdUnlinkOrRemoveFile(con->filename);
+  cupsdClearString(&con->filename);
+
+ /*
+  * Set the NeedReload flag...
+  */
 
+  NeedReload = RELOAD_CUPSD;
   ReloadTime = time(NULL);
 
  /*
   * Return that the file was created successfully...
   */
 
-  return (HTTP_CREATED);
+  return (HTTP_STATUS_CREATED);
+
+ /*
+  * Common exit for errors...
+  */
+
+  server_error:
+
+  cupsdUnlinkOrRemoveFile(con->filename);
+  cupsdClearString(&con->filename);
+
+  return (HTTP_STATUS_SERVER_ERROR);
 }
 
 
@@ -3981,17 +3315,13 @@ is_cgi(cupsd_client_t *con,             /* I - Client connection */
   * Check for known types...
   */
 
-  if (!type || strcasecmp(type->super, "application"))
+  if (!type || _cups_strcasecmp(type->super, "application"))
   {
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                   "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                   "type=%s/%s) = 0", con, con->http.fd, filename, filestats,
-                   type ? type->super : "unknown",
-                   type ? type->type : "unknown");
+    cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 0.", filename, filestats, type ? type->super : "unknown", type ? type->type : "unknown");
     return (0);
   }
 
-  if (!strcasecmp(type->type, "x-httpd-cgi") &&
+  if (!_cups_strcasecmp(type->type, "x-httpd-cgi") &&
       (filestats->st_mode & 0111))
   {
    /*
@@ -4003,15 +3333,11 @@ is_cgi(cupsd_client_t *con,             /* I - Client connection */
     if (options)
       cupsdSetStringf(&con->options, " %s", options);
 
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                   "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                   "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
-                   type ? type->super : "unknown",
-                   type ? type->type : "unknown");
+    cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
     return (1);
   }
 #ifdef HAVE_JAVA
-  else if (!strcasecmp(type->type, "x-httpd-java"))
+  else if (!_cups_strcasecmp(type->type, "x-httpd-java"))
   {
    /*
     * "application/x-httpd-java" is a Java servlet.
@@ -4024,16 +3350,12 @@ is_cgi(cupsd_client_t *con,             /* I - Client connection */
     else
       cupsdSetStringf(&con->options, " %s", filename);
 
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                   "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                   "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
-                   type ? type->super : "unknown",
-                   type ? type->type : "unknown");
+    cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
     return (1);
   }
 #endif /* HAVE_JAVA */
 #ifdef HAVE_PERL
-  else if (!strcasecmp(type->type, "x-httpd-perl"))
+  else if (!_cups_strcasecmp(type->type, "x-httpd-perl"))
   {
    /*
     * "application/x-httpd-perl" is a Perl page.
@@ -4046,16 +3368,12 @@ is_cgi(cupsd_client_t *con,             /* I - Client connection */
     else
       cupsdSetStringf(&con->options, " %s", filename);
 
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                   "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                   "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
-                   type ? type->super : "unknown",
-                   type ? type->type : "unknown");
+    cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
     return (1);
   }
 #endif /* HAVE_PERL */
 #ifdef HAVE_PHP
-  else if (!strcasecmp(type->type, "x-httpd-php"))
+  else if (!_cups_strcasecmp(type->type, "x-httpd-php"))
   {
    /*
     * "application/x-httpd-php" is a PHP page.
@@ -4068,16 +3386,12 @@ is_cgi(cupsd_client_t *con,             /* I - Client connection */
     else
       cupsdSetStringf(&con->options, " %s", filename);
 
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                   "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                   "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
-                   type ? type->super : "unknown",
-                   type ? type->type : "unknown");
+    cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
     return (1);
   }
 #endif /* HAVE_PHP */
 #ifdef HAVE_PYTHON
-  else if (!strcasecmp(type->type, "x-httpd-python"))
+  else if (!_cups_strcasecmp(type->type, "x-httpd-python"))
   {
    /*
     * "application/x-httpd-python" is a Python page.
@@ -4090,20 +3404,12 @@ is_cgi(cupsd_client_t *con,             /* I - Client connection */
     else
       cupsdSetStringf(&con->options, " %s", filename);
 
-    cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                   "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                   "type=%s/%s) = 1", con, con->http.fd, filename, filestats,
-                   type ? type->super : "unknown",
-                   type ? type->type : "unknown");
+    cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename, filestats, type->super, type->type);
     return (1);
   }
 #endif /* HAVE_PYTHON */
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                 "is_cgi(con=%p(%d), filename=\"%s\", filestats=%p, "
-                 "type=%s/%s) = 0", con, con->http.fd, filename, filestats,
-                 type ? type->super : "unknown",
-                 type ? type->type : "unknown");
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 0.", filename, filestats, type->super, type->type);
   return (0);
 }
 
@@ -4122,6 +3428,14 @@ is_path_absolute(const char *path)       /* I - Input path */
   if (path[0] != '/')
     return (0);
 
+ /*
+  * Check for "<" or quotes in the path and reject since this is probably
+  * someone trying to inject HTML...
+  */
+
+  if (strchr(path, '<') != NULL || strchr(path, '\"') != NULL || strchr(path, '\'') != NULL)
+    return (0);
+
  /*
   * Check for "/.." in the path...
   */
@@ -4143,461 +3457,6 @@ is_path_absolute(const char *path)      /* I - Input path */
 }
 
 
-#ifdef HAVE_SSL
-/*
- * 'make_certificate()' - Make a self-signed SSL/TLS certificate.
- */
-
-static int                             /* O - 1 on success, 0 on failure */
-make_certificate(cupsd_client_t *con)  /* I - Client connection */
-{
-#if defined(HAVE_LIBSSL) && defined(HAVE_WAITPID)
-  int          pid,                    /* Process ID of command */
-               status;                 /* Status of command */
-  char         command[1024],          /* Command */
-               *argv[12],              /* Command-line arguments */
-               *envp[MAX_ENV + 1],     /* Environment variables */
-               infofile[1024],         /* Type-in information for cert */
-               seedfile[1024];         /* Random number seed file */
-  int          envc,                   /* Number of environment variables */
-               bytes;                  /* Bytes written */
-  cups_file_t  *fp;                    /* Seed/info file */
-  int          infofd;                 /* Info file descriptor */
-
-
- /*
-  * Run the "openssl" command to seed the random number generator and
-  * generate a self-signed certificate that is good for 10 years:
-  *
-  *     openssl rand -rand seedfile 1
-  *
-  *     openssl req -new -x509 -keyout ServerKey \
-  *             -out ServerCertificate -days 3650 -nodes
-  *
-  * The seeding step is crucial in ensuring that the openssl command
-  * does not block on systems without sufficient entropy...
-  */
-
-  if (!cupsFileFind("openssl", getenv("PATH"), 1, command, sizeof(command)))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "No SSL certificate and openssl command not found!");
-    return (0);
-  }
-
-  if (access("/dev/urandom", 0))
-  {
-   /*
-    * If the system doesn't provide /dev/urandom, then any random source
-    * will probably be blocking-style, so generate some random data to
-    * use as a seed for the certificate.  Note that we have already
-    * seeded the random number generator in cupsdInitCerts()...
-    */
-
-    cupsdLogMessage(CUPSD_LOG_INFO,
-                    "Seeding the random number generator...");
-
-   /*
-    * Write the seed file...
-    */
-
-    if ((fp = cupsTempFile2(seedfile, sizeof(seedfile))) == NULL)
-    {
-      cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create seed file %s - %s",
-                      seedfile, strerror(errno));
-      return (0);
-    }
-
-    for (bytes = 0; bytes < 262144; bytes ++)
-      cupsFilePutChar(fp, random());
-
-    cupsFileClose(fp);
-
-   /*
-    * Run the openssl command to seed its random number generator...
-    */
-
-    argv[0] = "openssl";
-    argv[1] = "rand";
-    argv[2] = "-rand";
-    argv[3] = seedfile;
-    argv[4] = "1";
-    argv[5] = NULL;
-
-    envc = cupsdLoadEnv(envp, MAX_ENV);
-    envp[envc] = NULL;
-
-    if (!cupsdStartProcess(command, argv, envp, -1, -1, -1, -1, -1, 1, NULL,
-                           NULL, &pid))
-    {
-      unlink(seedfile);
-      return (0);
-    }
-
-    while (waitpid(pid, &status, 0) < 0)
-      if (errno != EINTR)
-      {
-       status = 1;
-       break;
-      }
-
-    cupsdFinishProcess(pid, command, sizeof(command), NULL);
-
-   /*
-    * Remove the seed file, as it is no longer needed...
-    */
-
-    unlink(seedfile);
-
-    if (status)
-    {
-      if (WIFEXITED(status))
-       cupsdLogMessage(CUPSD_LOG_ERROR,
-                       "Unable to seed random number generator - "
-                       "the openssl command stopped with status %d!",
-                       WEXITSTATUS(status));
-      else
-       cupsdLogMessage(CUPSD_LOG_ERROR,
-                       "Unable to seed random number generator - "
-                       "the openssl command crashed on signal %d!",
-                       WTERMSIG(status));
-
-      return (0);
-    }
-  }
-
- /*
-  * Create a file with the certificate information fields...
-  *
-  * Note: This assumes that the default questions are asked by the openssl
-  * command...
-  */
-
-  if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to create certificate information file %s - %s",
-                    infofile, strerror(errno));
-    return (0);
-  }
-
-  cupsFilePrintf(fp, ".\n.\n.\n%s\n.\n%s\n%s\n",
-                 ServerName, ServerName, ServerAdmin);
-  cupsFileClose(fp);
-
-  cupsdLogMessage(CUPSD_LOG_INFO,
-                  "Generating SSL server key and certificate...");
-
-  argv[0]  = "openssl";
-  argv[1]  = "req";
-  argv[2]  = "-new";
-  argv[3]  = "-x509";
-  argv[4]  = "-keyout";
-  argv[5]  = ServerKey;
-  argv[6]  = "-out";
-  argv[7]  = ServerCertificate;
-  argv[8]  = "-days";
-  argv[9]  = "3650";
-  argv[10] = "-nodes";
-  argv[11] = NULL;
-
-  cupsdLoadEnv(envp, MAX_ENV);
-
-  infofd = open(infofile, O_RDONLY);
-
-  if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, NULL,
-                         NULL, &pid))
-  {
-    close(infofd);
-    unlink(infofile);
-    return (0);
-  }
-
-  close(infofd);
-  unlink(infofile);
-
-  while (waitpid(pid, &status, 0) < 0)
-    if (errno != EINTR)
-    {
-      status = 1;
-      break;
-    }
-
-  cupsdFinishProcess(pid, command, sizeof(command), NULL);
-
-  if (status)
-  {
-    if (WIFEXITED(status))
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to create SSL server key and certificate - "
-                     "the openssl command stopped with status %d!",
-                     WEXITSTATUS(status));
-    else
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to create SSL server key and certificate - "
-                     "the openssl command crashed on signal %d!",
-                     WTERMSIG(status));
-  }
-  else
-  {
-    cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
-                   ServerKey);
-    cupsdLogMessage(CUPSD_LOG_INFO,
-                    "Created SSL server certificate file \"%s\"...",
-                   ServerCertificate);
-  }
-
-  return (!status);
-
-#elif defined(HAVE_GNUTLS)
-  gnutls_x509_crt      crt;            /* Self-signed certificate */
-  gnutls_x509_privkey  key;            /* Encryption key */
-  cups_lang_t          *language;      /* Default language info */
-  cups_file_t          *fp;            /* Key/cert file */
-  unsigned char                buffer[8192];   /* Buffer for x509 data */
-  size_t               bytes;          /* Number of bytes of data */
-  unsigned char                serial[4];      /* Serial number buffer */
-  time_t               curtime;        /* Current time */
-  int                  result;         /* Result of GNU TLS calls */
-
-
- /*
-  * Create the encryption key...
-  */
-
-  cupsdLogMessage(CUPSD_LOG_INFO, "Generating SSL server key...");
-
-  gnutls_x509_privkey_init(&key);
-  gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, 2048, 0);
-
- /*
-  * Save it...
-  */
-
-  bytes = sizeof(buffer);
-
-  if ((result = gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM,
-                                           buffer, &bytes)) < 0)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to export SSL server key - %s",
-                    gnutls_strerror(result));
-    gnutls_x509_privkey_deinit(key);
-    return (0);
-  }
-  else if ((fp = cupsFileOpen(ServerKey, "w")) != NULL)
-  {
-    cupsFileWrite(fp, (char *)buffer, bytes);
-    cupsFileClose(fp);
-
-    cupsdLogMessage(CUPSD_LOG_INFO, "Created SSL server key file \"%s\"...",
-                   ServerKey);
-  }
-  else
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to create SSL server key file \"%s\" - %s",
-                   ServerKey, strerror(errno));
-    gnutls_x509_privkey_deinit(key);
-    return (0);
-  }
-
- /*
-  * Create the self-signed certificate...
-  */
-
-  cupsdLogMessage(CUPSD_LOG_INFO, "Generating self-signed SSL certificate...");
-
-  language  = cupsLangDefault();
-  curtime   = time(NULL);
-  serial[0] = curtime >> 24;
-  serial[1] = curtime >> 16;
-  serial[2] = curtime >> 8;
-  serial[3] = curtime;
-
-  gnutls_x509_crt_init(&crt);
-  if (strlen(language->language) == 5)
-    gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
-                                  language->language + 3, 2);
-  else
-    gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COUNTRY_NAME, 0,
-                                  "US", 2);
-  gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_COMMON_NAME, 0,
-                                ServerName, strlen(ServerName));
-  gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
-                                ServerName, strlen(ServerName));
-  gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME,
-                                0, "Unknown", 7);
-  gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_STATE_OR_PROVINCE_NAME, 0,
-                                "Unknown", 7);
-  gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_X520_LOCALITY_NAME, 0,
-                                "Unknown", 7);
-  gnutls_x509_crt_set_dn_by_oid(crt, GNUTLS_OID_PKCS9_EMAIL, 0,
-                                ServerAdmin, strlen(ServerAdmin));
-  gnutls_x509_crt_set_key(crt, key);
-  gnutls_x509_crt_set_serial(crt, serial, sizeof(serial));
-  gnutls_x509_crt_set_activation_time(crt, curtime);
-  gnutls_x509_crt_set_expiration_time(crt, curtime + 10 * 365 * 86400);
-  gnutls_x509_crt_set_ca_status(crt, 0);
-  gnutls_x509_crt_set_subject_alternative_name(crt, GNUTLS_SAN_DNSNAME,
-                                               ServerName);
-  gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0);
-  gnutls_x509_crt_set_key_usage(crt, GNUTLS_KEY_KEY_ENCIPHERMENT);
-  gnutls_x509_crt_set_version(crt, 3);
-
-  bytes = sizeof(buffer);
-  if (gnutls_x509_crt_get_key_id(crt, 0, buffer, &bytes) >= 0)
-    gnutls_x509_crt_set_subject_key_id(crt, buffer, bytes);
-
-  gnutls_x509_crt_sign(crt, crt, key);
-
- /*
-  * Save it...
-  */
-
-  bytes = sizeof(buffer);
-  if ((result = gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM,
-                                       buffer, &bytes)) < 0)
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to export SSL server certificate - %s",
-                   gnutls_strerror(result));
-  else if ((fp = cupsFileOpen(ServerCertificate, "w")) != NULL)
-  {
-    cupsFileWrite(fp, (char *)buffer, bytes);
-    cupsFileClose(fp);
-
-    cupsdLogMessage(CUPSD_LOG_INFO,
-                    "Created SSL server certificate file \"%s\"...",
-                   ServerCertificate);
-  }
-  else
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to create SSL server certificate file \"%s\" - %s",
-                   ServerCertificate, strerror(errno));
-
- /*
-  * Cleanup...
-  */
-
-  gnutls_x509_crt_deinit(crt);
-  gnutls_x509_privkey_deinit(key);
-
-  return (1);
-
-#elif defined(HAVE_CDSASSL) && defined(HAVE_WAITPID)
-  int          pid,                    /* Process ID of command */
-               status;                 /* Status of command */
-  char         command[1024],          /* Command */
-               *argv[4],               /* Command-line arguments */
-               *envp[MAX_ENV + 1],     /* Environment variables */
-               keychain[1024],         /* Keychain argument */
-               infofile[1024],         /* Type-in information for cert */
-               localname[1024],        /* Local hostname */
-               *servername;            /* Name of server in cert */
-  cups_file_t  *fp;                    /* Seed/info file */
-  int          infofd;                 /* Info file descriptor */
-
-
-  if (con->servername && isdigit(con->servername[0] & 255) && DNSSDHostName)
-  {
-    snprintf(localname, sizeof(localname), "%s.local", DNSSDHostName);
-    servername = localname;
-  }
-  else
-    servername = con->servername;
-       
- /*
-  * Run the "certtool" command to generate a self-signed certificate...
-  */
-
-  if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command)))
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "No SSL certificate and certtool command not found!");
-    return (0);
-  }
-
- /*
-  * Create a file with the certificate information fields...
-  *
-  * Note: This assumes that the default questions are asked by the certtool
-  * command...
-  */
-
-  if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "Unable to create certificate information file %s - %s",
-                    infofile, strerror(errno));
-    return (0);
-  }
-
-  cupsFilePrintf(fp, "%s\nr\n\ny\nb\ns\ny\n%s\n\n\n\n\n%s\ny\n",
-                servername, servername, ServerAdmin);
-  cupsFileClose(fp);
-
-  cupsdLogMessage(CUPSD_LOG_INFO,
-                  "Generating SSL server key and certificate...");
-
-  snprintf(keychain, sizeof(keychain), "k=%s", ServerCertificate);
-
-  argv[0] = "certtool";
-  argv[1] = "c";
-  argv[2] = keychain;
-  argv[3] = NULL;
-
-  cupsdLoadEnv(envp, MAX_ENV);
-
-  infofd = open(infofile, O_RDONLY);
-
-  if (!cupsdStartProcess(command, argv, envp, infofd, -1, -1, -1, -1, 1, NULL,
-                         NULL, &pid))
-  {
-    close(infofd);
-    unlink(infofile);
-    return (0);
-  }
-
-  close(infofd);
-  unlink(infofile);
-
-  while (waitpid(pid, &status, 0) < 0)
-    if (errno != EINTR)
-    {
-      status = 1;
-      break;
-    }
-
-  cupsdFinishProcess(pid, command, sizeof(command), NULL);
-
-  if (status)
-  {
-    if (WIFEXITED(status))
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to create SSL server key and certificate - "
-                     "the certtool command stopped with status %d!",
-                     WEXITSTATUS(status));
-    else
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "Unable to create SSL server key and certificate - "
-                     "the certtool command crashed on signal %d!",
-                     WTERMSIG(status));
-  }
-  else
-  {
-    cupsdLogMessage(CUPSD_LOG_INFO,
-                    "Created SSL server certificate file \"%s\"...",
-                   ServerCertificate);
-  }
-
-  return (!status);
-
-#else
-  return (0);
-#endif /* HAVE_LIBSSL && HAVE_WAITPID */
-}
-#endif /* HAVE_SSL */
-
-
 /*
  * 'pipe_command()' - Pipe the output of a command to the remote client.
  */
@@ -4637,7 +3496,6 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
                server_name[1024],      /* SERVER_NAME environment variable */
                server_port[1024];      /* SERVER_PORT environment variable */
   ipp_attribute_t *attr;               /* attributes-natural-language attribute */
-  void         *ccache = NULL;         /* Kerberos credentials */
 
 
  /*
@@ -4658,21 +3516,12 @@ pipe_command(cupsd_client_t *con,       /* I - Client connection */
   * be consistent with Apache...
   */
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "pipe_command(con=%p(%d), infile=%d, outfile=%p, "
-                 "command=\"%s\", options=\"%s\", root=%d)",
-                  con, con->http.fd, infile, outfile, command,
-                 options ? options : "(null)", root);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "pipe_command: infile=%d, outfile=%p, command=\"%s\", options=\"%s\", root=%d", infile, outfile, command, options ? options : "(null)", root);
 
   argv[0] = command;
 
   if (options)
-  {
-    commptr = options;
-    if (*commptr == ' ')
-      commptr ++;
-    strlcpy(argbuf, commptr, sizeof(argbuf));
-  }
+    strlcpy(argbuf, options, sizeof(argbuf));
   else
     argbuf[0] = '\0';
 
@@ -4699,7 +3548,7 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
       commptr ++;
   }
 
-  if (*commptr == '?' && con->operation == HTTP_GET && !con->query_string)
+  if (*commptr == '?' && con->operation == HTTP_STATE_GET && !con->query_string)
   {
     commptr ++;
     cupsdSetStringf(&(con->query_string), "QUERY_STRING=%s", commptr);
@@ -4742,9 +3591,9 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
        */
 
        if (commptr[1] >= '0' && commptr[1] <= '9')
-          *commptr = (commptr[1] - '0') << 4;
+          *commptr = (char)((commptr[1] - '0') << 4);
        else
-          *commptr = (tolower(commptr[1]) - 'a' + 10) << 4;
+          *commptr = (char)((tolower(commptr[1]) - 'a' + 10) << 4);
 
        if (commptr[2] >= '0' && commptr[2] <= '9')
           *commptr |= commptr[2] - '0';
@@ -4772,7 +3621,7 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
   if (con->username[0])
   {
     snprintf(auth_type, sizeof(auth_type), "AUTH_TYPE=%s",
-             httpGetField(HTTP(con), HTTP_FIELD_AUTHORIZATION));
+             httpGetField(con->http, HTTP_FIELD_AUTHORIZATION));
 
     if ((uriptr = strchr(auth_type + 10, ' ')) != NULL)
       *uriptr = '\0';
@@ -4792,7 +3641,7 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
          * the POSIX locale...
          */
 
-         strcpy(lang, "LANG=C");
+         strlcpy(lang, "LANG=C", sizeof(lang));
          break;
 
       case 2 :
@@ -4820,14 +3669,14 @@ pipe_command(cupsd_client_t *con,       /* I - Client connection */
   else if (con->language)
     snprintf(lang, sizeof(lang), "LANG=%s.UTF8", con->language->language);
   else
-    strcpy(lang, "LANG=C");
+    strlcpy(lang, "LANG=C", sizeof(lang));
 
-  strcpy(remote_addr, "REMOTE_ADDR=");
-  httpAddrString(con->http.hostaddr, remote_addr + 12,
+  strlcpy(remote_addr, "REMOTE_ADDR=", sizeof(remote_addr));
+  httpAddrString(httpGetAddress(con->http), remote_addr + 12,
                  sizeof(remote_addr) - 12);
 
   snprintf(remote_host, sizeof(remote_host), "REMOTE_HOST=%s",
-           con->http.hostname);
+           httpGetHostname(con->http, NULL, 0));
 
   snprintf(script_name, sizeof(script_name), "SCRIPT_NAME=%s", con->uri);
   if ((uriptr = strchr(script_name, '?')) != NULL)
@@ -4836,10 +3685,20 @@ pipe_command(cupsd_client_t *con,       /* I - Client connection */
   snprintf(script_filename, sizeof(script_filename), "SCRIPT_FILENAME=%s%s",
            DocumentRoot, script_name + 12);
 
-  sprintf(server_port, "SERVER_PORT=%d", con->serverport);
+  snprintf(server_port, sizeof(server_port), "SERVER_PORT=%d", con->serverport);
 
-  snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
-           con->servername);
+  if (httpGetField(con->http, HTTP_FIELD_HOST)[0])
+  {
+    char *nameptr;                     /* Pointer to ":port" */
+
+    snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
+            httpGetField(con->http, HTTP_FIELD_HOST));
+    if ((nameptr = strrchr(server_name, ':')) != NULL && !strchr(nameptr, ']'))
+      *nameptr = '\0';                 /* Strip trailing ":port" */
+  }
+  else
+    snprintf(server_name, sizeof(server_name), "SERVER_NAME=%s",
+            con->servername);
 
   envc = cupsdLoadEnv(envp, (int)(sizeof(envp) / sizeof(envp[0])));
 
@@ -4864,46 +3723,37 @@ pipe_command(cupsd_client_t *con,       /* I - Client connection */
     snprintf(remote_user, sizeof(remote_user), "REMOTE_USER=%s", con->username);
 
     envp[envc ++] = remote_user;
-
-   /*
-    * Save Kerberos credentials, if any...
-    */
-
-#ifdef HAVE_GSSAPI
-    if (con->gss_creds)
-      ccache = cupsdCopyKrb5Creds(con);
-#endif /* HAVE_GSSAPI */
   }
 
-  if (con->http.version == HTTP_1_1)
+  if (httpGetVersion(con->http) == HTTP_VERSION_1_1)
     envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.1";
-  else if (con->http.version == HTTP_1_0)
+  else if (httpGetVersion(con->http) == HTTP_VERSION_1_0)
     envp[envc ++] = "SERVER_PROTOCOL=HTTP/1.0";
   else
     envp[envc ++] = "SERVER_PROTOCOL=HTTP/0.9";
 
-  if (con->http.cookie)
+  if (httpGetCookie(con->http))
   {
     snprintf(http_cookie, sizeof(http_cookie), "HTTP_COOKIE=%s",
-             con->http.cookie);
+             httpGetCookie(con->http));
     envp[envc ++] = http_cookie;
   }
 
-  if (con->http.fields[HTTP_FIELD_USER_AGENT][0])
+  if (httpGetField(con->http, HTTP_FIELD_USER_AGENT)[0])
   {
     snprintf(http_user_agent, sizeof(http_user_agent), "HTTP_USER_AGENT=%s",
-             con->http.fields[HTTP_FIELD_USER_AGENT]);
+             httpGetField(con->http, HTTP_FIELD_USER_AGENT));
     envp[envc ++] = http_user_agent;
   }
 
-  if (con->http.fields[HTTP_FIELD_REFERER][0])
+  if (httpGetField(con->http, HTTP_FIELD_REFERER)[0])
   {
     snprintf(http_referer, sizeof(http_referer), "HTTP_REFERER=%s",
-             con->http.fields[HTTP_FIELD_REFERER]);
+             httpGetField(con->http, HTTP_FIELD_REFERER));
     envp[envc ++] = http_referer;
   }
 
-  if (con->operation == HTTP_GET)
+  if (con->operation == HTTP_STATE_GET)
   {
     envp[envc ++] = "REQUEST_METHOD=GET";
 
@@ -4923,7 +3773,7 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
     sprintf(content_length, "CONTENT_LENGTH=" CUPS_LLFMT,
             CUPS_LLCAST con->bytes);
     snprintf(content_type, sizeof(content_type), "CONTENT_TYPE=%s",
-             con->http.fields[HTTP_FIELD_CONTENT_TYPE]);
+             httpGetField(con->http, HTTP_FIELD_CONTENT_TYPE));
 
     envp[envc ++] = "REQUEST_METHOD=POST";
     envp[envc ++] = content_length;
@@ -4934,7 +3784,7 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
   * Tell the CGI if we are using encryption...
   */
 
-  if (con->http.tls)
+  if (httpIsEncrypted(con->http))
     envp[envc ++] = "HTTPS=ON";
 
  /*
@@ -4988,7 +3838,7 @@ pipe_command(cupsd_client_t *con, /* I - Client connection */
     */
 
     if (con->username[0])
-      cupsdAddCert(pid, con->username, ccache);
+      cupsdAddCert(pid, con->username, con->type);
 
     cupsdLogMessage(CUPSD_LOG_DEBUG, "[CGI] Started %s (PID %d)", command, pid);
 
@@ -5009,64 +3859,78 @@ valid_host(cupsd_client_t *con)         /* I - Client connection */
 {
   cupsd_alias_t        *a;                     /* Current alias */
   cupsd_netif_t        *netif;                 /* Current network interface */
-  const char   *host,                  /* Host field */
-               *end;                   /* End character */
+  const char   *end;                   /* End character */
+  char         *ptr;                   /* Pointer into host value */
+
+
+ /*
+  * Copy the Host: header for later use...
+  */
 
+  strlcpy(con->clientname, httpGetField(con->http, HTTP_FIELD_HOST),
+          sizeof(con->clientname));
+  if ((ptr = strrchr(con->clientname, ':')) != NULL && !strchr(ptr, ']'))
+  {
+    *ptr++ = '\0';
+    con->clientport = atoi(ptr);
+  }
+  else
+    con->clientport = con->serverport;
 
-  host = con->http.fields[HTTP_FIELD_HOST];
+ /*
+  * Then validate...
+  */
 
-  if (httpAddrLocalhost(con->http.hostaddr))
+  if (httpAddrLocalhost(httpGetAddress(con->http)))
   {
    /*
     * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
     * addresses when accessing CUPS via the loopback interface...
     */
 
-    return (!strcasecmp(host, "localhost") ||
-            !strncasecmp(host, "localhost:", 10) ||
-           !strcasecmp(host, "localhost.") ||
-            !strncasecmp(host, "localhost.:", 11) ||
+    return (!_cups_strcasecmp(con->clientname, "localhost") ||
+           !_cups_strcasecmp(con->clientname, "localhost.") ||
 #ifdef __linux
-           !strcasecmp(host, "localhost.localdomain") ||
-            !strncasecmp(host, "localhost.localdomain:", 22) ||
+           !_cups_strcasecmp(con->clientname, "localhost.localdomain") ||
 #endif /* __linux */
-            !strcmp(host, "127.0.0.1") ||
-           !strncmp(host, "127.0.0.1:", 10) ||
-           !strcmp(host, "[::1]") ||
-           !strncmp(host, "[::1]:", 6));
+            !strcmp(con->clientname, "127.0.0.1") ||
+           !strcmp(con->clientname, "[::1]"));
   }
 
-#ifdef HAVE_DNSSD
+#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
  /*
   * Check if the hostname is something.local (Bonjour); if so, allow it.
   */
 
-  if ((end = strrchr(host, '.')) != NULL &&
-      (!strcasecmp(end, ".local") || !strncasecmp(end, ".local:", 7) ||
-       !strcasecmp(end, ".local.") || !strncasecmp(end, ".local.:", 8)))
+  if ((end = strrchr(con->clientname, '.')) != NULL && end > con->clientname &&
+      !end[1])
+  {
+   /*
+    * "." on end, work back to second-to-last "."...
+    */
+
+    for (end --; end > con->clientname && *end != '.'; end --);
+  }
+
+  if (end && (!_cups_strcasecmp(end, ".local") ||
+             !_cups_strcasecmp(end, ".local.")))
     return (1);
-#endif /* HAVE_DNSSD */
+#endif /* HAVE_DNSSD || HAVE_AVAHI */
 
  /*
   * Check if the hostname is an IP address...
   */
 
-  if (isdigit(*host & 255) || *host == '[')
+  if (isdigit(con->clientname[0] & 255) || con->clientname[0] == '[')
   {
    /*
     * Possible IPv4/IPv6 address...
     */
 
-    char       temp[1024],             /* Temporary string */
-               *ptr;                   /* Pointer into temporary string */
     http_addrlist_t *addrlist;         /* List of addresses */
 
 
-    strlcpy(temp, host, sizeof(temp));
-    if ((ptr = strrchr(temp, ':')) != NULL && !strchr(ptr, ']'))
-      *ptr = '\0';                     /* Strip :port from host value */
-
-    if ((addrlist = httpAddrGetList(temp, AF_UNSPEC, NULL)) != NULL)
+    if ((addrlist = httpAddrGetList(con->clientname, AF_UNSPEC, NULL)) != NULL)
     {
      /*
       * Good IPv4/IPv6 address...
@@ -5092,21 +3956,20 @@ valid_host(cupsd_client_t *con)         /* I - Client connection */
     if (!strcmp(a->name, "*"))
       return (1);
 
-    if (!strncasecmp(host, a->name, a->namelen))
+    if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
     {
      /*
-      * Prefix matches; check the character at the end - it must be ":", ".",
-      * ".:", or nul...
+      * Prefix matches; check the character at the end - it must be "." or nul.
       */
 
-      end = host + a->namelen;
+      end = con->clientname + a->namelen;
 
-      if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
+      if (!*end || (*end == '.' && !end[1]))
         return (1);
     }
   }
 
-#ifdef HAVE_DNSSD
+#if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
   for (a = (cupsd_alias_t *)cupsArrayFirst(DNSSDAlias);
        a;
        a = (cupsd_alias_t *)cupsArrayNext(DNSSDAlias))
@@ -5118,20 +3981,19 @@ valid_host(cupsd_client_t *con)         /* I - Client connection */
     if (!strcmp(a->name, "*"))
       return (1);
 
-    if (!strncasecmp(host, a->name, a->namelen))
+    if (!_cups_strncasecmp(con->clientname, a->name, a->namelen))
     {
      /*
-      * Prefix matches; check the character at the end - it must be ":", ".",
-      * ".:", or nul...
+      * Prefix matches; check the character at the end - it must be "." or nul.
       */
 
-      end = host + a->namelen;
+      end = con->clientname + a->namelen;
 
-      if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
+      if (!*end || (*end == '.' && !end[1]))
         return (1);
     }
   }
-#endif /* HAVE_DNSSD */
+#endif /* HAVE_DNSSD || HAVE_AVAHI */
 
  /*
   * Check for interface hostname matches...
@@ -5141,16 +4003,15 @@ valid_host(cupsd_client_t *con)         /* I - Client connection */
        netif;
        netif = (cupsd_netif_t *)cupsArrayNext(NetIFList))
   {
-    if (!strncasecmp(host, netif->hostname, netif->hostlen))
+    if (!_cups_strncasecmp(con->clientname, netif->hostname, netif->hostlen))
     {
      /*
-      * Prefix matches; check the character at the end - it must be ":", ".",
-      * ".:", or nul...
+      * Prefix matches; check the character at the end - it must be "." or nul.
       */
 
-      end = host + netif->hostlen;
+      end = con->clientname + netif->hostlen;
 
-      if (!*end || *end == ':' || (*end == '.' && (!end[1] || end[1] == ':')))
+      if (!*end || (*end == '.' && !end[1]))
         return (1);
     }
   }
@@ -5172,43 +4033,29 @@ write_file(cupsd_client_t *con,         /* I - Client connection */
 {
   con->file = open(filename, O_RDONLY);
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "write_file(con=%p(%d), code=%d, filename=\"%s\" (%d), "
-                 "type=\"%s\", filestats=%p)", con, con->http.fd,
-                 code, filename, con->file, type ? type : "(null)", filestats);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "write_file: code=%d, filename=\"%s\" (%d), type=\"%s\", filestats=%p.", code, filename, con->file, type ? type : "(null)", filestats);
 
   if (con->file < 0)
     return (0);
 
   fcntl(con->file, F_SETFD, fcntl(con->file, F_GETFD) | FD_CLOEXEC);
 
-  con->pipe_pid = 0;
+  con->pipe_pid    = 0;
+  con->sent_header = 1;
 
-  if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
-    return (0);
+  httpClearFields(con->http);
 
-  if (httpPrintf(HTTP(con), "Last-Modified: %s\r\n",
-                 httpGetDateString(filestats->st_mtime)) < 0)
-    return (0);
-  if (httpPrintf(HTTP(con), "Content-Length: " CUPS_LLFMT "\r\n",
-                 CUPS_LLCAST filestats->st_size) < 0)
-    return (0);
-  if (httpPrintf(HTTP(con), "\r\n") < 0)
-    return (0);
+  httpSetLength(con->http, (size_t)filestats->st_size);
 
-  if (cupsdFlushHeader(con) < 0)
-    return (0);
+  httpSetField(con->http, HTTP_FIELD_LAST_MODIFIED,
+              httpGetDateString(filestats->st_mtime));
 
-  con->http.data_encoding  = HTTP_ENCODE_LENGTH;
-  con->http.data_remaining = filestats->st_size;
+  if (!cupsdSendHeader(con, code, type, CUPSD_AUTH_NONE))
+    return (0);
 
-  if (con->http.data_remaining <= INT_MAX)
-    con->http._data_remaining = con->http.data_remaining;
-  else
-    con->http._data_remaining = INT_MAX;
+  cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
 
-  cupsdAddSelect(con->http.fd, (cupsd_selfunc_t)cupsdReadClient,
-                 (cupsd_selfunc_t)cupsdWriteClient, con);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "Sending file.");
 
   return (1);
 }
@@ -5221,17 +4068,12 @@ write_file(cupsd_client_t *con,         /* I - Client connection */
 static void
 write_pipe(cupsd_client_t *con)                /* I - Client connection */
 {
-  cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                  "write_pipe(con=%p(%d)) CGI output on fd %d",
-                  con, con->http.fd, con->file);
+  cupsdLogClient(con, CUPSD_LOG_DEBUG2, "write_pipe: CGI output on fd %d.", con->file);
 
   con->file_ready = 1;
 
   cupsdRemoveSelect(con->file);
-  cupsdAddSelect(con->http.fd, NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
-}
+  cupsdAddSelect(httpGetFd(con->http), NULL, (cupsd_selfunc_t)cupsdWriteClient, con);
 
-
-/*
- * End of "$Id: client.c 7950 2008-09-17 00:21:59Z mike $".
- */
+  cupsdLogClient(con, CUPSD_LOG_DEBUG, "CGI data ready to be sent.");
+}