]> git.ipfire.org Git - thirdparty/cups.git/blobdiff - scheduler/main.c
Load cups into easysw/current.
[thirdparty/cups.git] / scheduler / main.c
index 434cacf89200fecc2de4643da9fb5f13a8e9ac1c..8e1e385f8ed48f3892fcde2de1a111a8aece300c 100644 (file)
@@ -1,25 +1,16 @@
 /*
- * "$Id: main.c 6090 2006-11-14 16:35:27Z mike $"
+ * "$Id: main.c 6654 2007-07-12 22:07:57Z mike $"
  *
  *   Scheduler main loop for the Common UNIX Printing System (CUPS).
  *
- *   Copyright 1997-2006 by Easy Software Products, all rights reserved.
+ *   Copyright 2007 by Apple Inc.
+ *   Copyright 1997-2007 by Easy Software Products, all rights reserved.
  *
  *   These coded instructions, statements, and computer programs are the
- *   property of Easy Software Products and are protected by Federal
- *   copyright law.  Distribution and use rights are outlined in the file
+ *   property of Apple Inc. and are protected by Federal copyright
+ *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  *   "LICENSE" which should have been included with this file.  If this
- *   file is missing or damaged please contact Easy Software Products
- *   at:
- *
- *       Attn: CUPS Licensing Information
- *       Easy Software Products
- *       44141 Airport View Drive, Suite 204
- *       Hollywood, Maryland 20636 USA
- *
- *       Voice: (301) 373-9600
- *       EMail: cups-info@cups.org
- *         WWW: http://www.cups.org
+ *   file is missing or damaged, see the license at "http://www.cups.org/".
  *
  * Contents:
  *
  *   cupsdSetStringf()         - Set a formatted string value.
  *   launchd_checkin()         - Check-in with launchd and collect the
  *                               listening fds.
- *   launchd_create_dict()     - Create a dictionary representing the launchd
- *                              config file org.cups.cupsd.plist.
- *   launchd_reload()          - Tell launchd to reload the configuration
- *                               file to pick up the new listening directives.
- *   launchd_sync_conf()       - Re-write the launchd config file
- *                              org.cups.cupsd.plist based on cupsd.conf.
+ *   launchd_checkout()        - Check-out with launchd.
  *   parent_handler()          - Catch USR1/CHLD signals...
  *   process_children()        - Process all dead children...
  *   sigchld_handler()         - Handle 'child' signals from old processes.
 #ifdef HAVE_LAUNCH_H
 #  include <launch.h>
 #  include <libgen.h>
+#  define CUPS_KEEPALIVE       CUPS_CACHEDIR "/org.cups.cupsd"
+                                       /* Name of the launchd KeepAlive file */
+#  ifndef LAUNCH_JOBKEY_KEEPALIVE
+#    define LAUNCH_JOBKEY_KEEPALIVE "KeepAlive"
+#  endif /* !LAUNCH_JOBKEY_KEEPALIVE */
+#  ifndef LAUNCH_JOBKEY_PATHSTATE
+#    define LAUNCH_JOBKEY_PATHSTATE "PathState"
+#  endif /* !LAUNCH_JOBKEY_PATHSTATE */
+#  ifndef LAUNCH_JOBKEY_SERVICEIPC
+#    define LAUNCH_JOBKEY_SERVICEIPC "ServiceIPC"
+#  endif /* !LAUNCH_JOBKEY_SERVICEIPC */
 #endif /* HAVE_LAUNCH_H */
 
 #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO)
 #  include <notify.h>
 #endif /* HAVE_NOTIFY_H */
 
+#if defined(__APPLE__) && defined(HAVE_DLFCN_H)
+#  include <dlfcn.h>
+#endif /* __APPLE__ && HAVE_DLFCN_H */
+
 
 /*
  * Local functions...
@@ -78,9 +79,7 @@
 
 #ifdef HAVE_LAUNCHD
 static void            launchd_checkin(void);
-static CFDictionaryRef launchd_create_dict(void);
-static void            launchd_reload(void);
-static int             launchd_sync_conf(void);
+static void            launchd_checkout(void);
 #endif /* HAVE_LAUNCHD */
 static void            parent_handler(int sig);
 static void            process_children(void);
@@ -106,12 +105,11 @@ static int                dead_children = 0;
 static int             stop_scheduler = 0;
                                        /* Should the scheduler stop? */
 
-#ifdef HAVE_LAUNCHD
-static CFURLRef                launchd_conf_url = NULL;
-                                       /* org.cups.cupsd.plist url */
-static CFDictionaryRef launchd_conf_dict = NULL;
-                                       /* org.cups.cupsd.plist dict */
-#endif /* HAVE_LAUNCHD */
+#if defined(__APPLE__) && defined(HAVE_DLFCN_H)
+static const char *PSQLibPath = "/usr/lib/libPrintServiceQuota.dylib";
+static const char *PSQLibFuncName = "PSQUpdateQuota";
+static void *PSQLibRef;                        /* libPrintServiceQuota.dylib */
+#endif /* HAVE_DLFCN_H */
 
 
 /*
@@ -126,8 +124,6 @@ main(int  argc,                             /* I - Number of command-line args */
   char                 *opt;           /* Option character */
   int                  fg;             /* Run in the foreground */
   int                  fds;            /* Number of ready descriptors */
-  fd_set               *input,         /* Input set for select() */
-                       *output;        /* Output set for select() */
   cupsd_client_t       *con;           /* Current client */
   cupsd_job_t          *job;           /* Current job */
   cupsd_listener_t     *lis;           /* Current listener */
@@ -136,14 +132,11 @@ main(int  argc,                           /* I - Number of command-line args */
                        browse_time,    /* Next browse send time */
                        senddoc_time,   /* Send-Document time */
                        expire_time,    /* Subscription expire time */
-#ifndef __APPLE__
-                       netif_time,     /* Network interface poll time */
-#endif /* !__APPLE__ */
                        mallinfo_time;  /* Malloc information time */
   size_t               string_count,   /* String count */
                        alloc_bytes,    /* Allocated string bytes */
                        total_bytes;    /* Total string bytes */
-  struct timeval       timeout;        /* select() timeout */
+  long                 timeout;        /* Timeout for cupsdDoSelect() */
   struct rlimit                limit;          /* Runtime limit */
 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
   struct sigaction     action;         /* Actions for POSIX signals */
@@ -164,6 +157,14 @@ main(int  argc,                            /* I - Number of command-line args */
 
   fg = 0;
 
+#ifdef HAVE_LAUNCHD
+  if (getenv("CUPSD_LAUNCHD"))
+  {
+    Launchd = 1;
+    fg      = 1;
+  }
+#endif /* HAVE_LAUNCHD */
+
   for (i = 1; i < argc; i ++)
     if (argv[i][0] == '-')
       for (opt = argv[i] + 1; *opt != '\0'; opt ++)
@@ -351,7 +352,7 @@ main(int  argc,                             /* I - Number of command-line args */
 
     getrlimit(RLIMIT_NOFILE, &limit);
 
-    for (i = 0; i < limit.rlim_cur; i ++)
+    for (i = 0; i < limit.rlim_cur && i < 1024; i ++)
       close(i);
 #endif /* DEBUG */
   }
@@ -372,33 +373,23 @@ main(int  argc,                           /* I - Number of command-line args */
 
   getrlimit(RLIMIT_NOFILE, &limit);
 
+#if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE)
   if (limit.rlim_max > FD_SETSIZE)
     MaxFDs = FD_SETSIZE;
   else
+#endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */
+#ifdef RLIM_INFINITY
+  if (limit.rlim_max == RLIM_INFINITY)
+    MaxFDs = 16384;
+  else
+#endif /* RLIM_INFINITY */
     MaxFDs = limit.rlim_max;
 
   limit.rlim_cur = MaxFDs;
 
   setrlimit(RLIMIT_NOFILE, &limit);
 
- /*
-  * Allocate memory for the input and output sets...
-  */
-
-  SetSize = (MaxFDs + 31) / 8 + 4;
-  if (SetSize < sizeof(fd_set))
-    SetSize = sizeof(fd_set);
-
-  InputSet  = (fd_set *)calloc(1, SetSize);
-  OutputSet = (fd_set *)calloc(1, SetSize);
-  input     = (fd_set *)calloc(1, SetSize);
-  output    = (fd_set *)calloc(1, SetSize);
-
-  if (InputSet == NULL || OutputSet == NULL || input == NULL || output == NULL)
-  {
-    syslog(LOG_LPR, "Unable to allocate memory for select() sets - exiting!");
-    return (1);
-  }
+  cupsdStartSelect();
 
  /*
   * Read configuration...
@@ -415,27 +406,24 @@ main(int  argc,                           /* I - Number of command-line args */
   if (Launchd)
   {
    /*
-    * If we were started by launchd make sure the cupsd plist file contains the
-    * same listeners as cupsd.conf; If it didn't then reload it before getting
-    * the list of listening file descriptors...
+    * If we were started by launchd get the listen sockets file descriptors...
     */
 
-    if (launchd_sync_conf())
-    {
-      launchd_reload();
-
-     /*
-      * Until rdar://3854821 is fixed we have to exit after the reload...
-      */
-
-      cupsdLogMessage(CUPSD_LOG_DEBUG2, "Exiting on launchd_reload");
-      exit(0);
-    }
-
     launchd_checkin();
   }
 #endif /* HAVE_LAUNCHD */
 
+#if defined(__APPLE__) && defined(HAVE_DLFCN_H)
+ /*
+  * Load Print Service quota enforcement library (X Server only)
+  */
+
+  PSQLibRef = dlopen(PSQLibPath, RTLD_LAZY);
+
+  if (PSQLibRef)
+    PSQUpdateQuotaProc = dlsym(PSQLibRef, PSQLibFuncName);
+#endif /* __APPLE__ && HAVE_DLFCN_H */
+
  /*
   * Startup the server...
   */
@@ -551,9 +539,6 @@ main(int  argc,                             /* I - Number of command-line args */
   senddoc_time  = time(NULL);
   expire_time   = time(NULL);
   fds           = 1;
-#ifndef __APPLE__
-  netif_time    = 0;
-#endif /* !__APPLE__ */
 
   while (!stop_scheduler)
   {
@@ -632,18 +617,9 @@ main(int  argc,                            /* I - Number of command-line args */
 #if HAVE_LAUNCHD
        if (Launchd)
        {
-         if (launchd_sync_conf())
-         {
-           launchd_reload();
-
-          /*
-           * Until rdar://3854821 is fixed we have to exit after the reload...
-           */
-
-           cupsdLogMessage(CUPSD_LOG_DEBUG2, "Exiting on launchd_reload");
-           stop_scheduler = 1;
-           break;
-         }
+        /*
+         * If we were started by launchd get the listen sockets file descriptors...
+         */
 
          launchd_checkin();
        }
@@ -658,18 +634,15 @@ main(int  argc,                           /* I - Number of command-line args */
     }
 
    /*
-    * Check for available input or ready output.  If select() returns
-    * 0 or -1, something bad happened and we should exit immediately.
+    * Check for available input or ready output.  If cupsdDoSelect()
+    * returns 0 or -1, something bad happened and we should exit
+    * immediately.
     *
     * Note that we at least have one listening socket open at all
     * times.
     */
 
-    memcpy(input, InputSet, SetSize);
-    memcpy(output, OutputSet, SetSize);
-
-    timeout.tv_sec  = select_timeout(fds);
-    timeout.tv_usec = 0;
+    timeout = select_timeout(fds);
 
 #if HAVE_LAUNCHD
    /*
@@ -678,71 +651,41 @@ main(int  argc,                           /* I - Number of command-line args */
     * inactivity...
     */
 
-    if (timeout.tv_sec == 86400 && Launchd && LaunchdTimeout && !NumPolled &&
-       (!Browsing || !(BrowseLocalProtocols & BROWSE_DNSSD) ||
-        cupsArrayCount(Printers) == 0))
+    if (timeout == 86400 && Launchd && LaunchdTimeout && !NumPolled &&
+        !cupsArrayCount(ActiveJobs) &&
+       (!Browsing || 
+        (!BrowseRemoteProtocols && 
+         (!NumBrowsers || !BrowseLocalProtocols ||
+          cupsArrayCount(Printers) == 0))))
     {
-      timeout.tv_sec    = LaunchdTimeout;
+      timeout          = LaunchdTimeout;
       launchd_idle_exit = 1;
     }
     else
       launchd_idle_exit = 0;
 #endif /* HAVE_LAUNCHD */
 
-    if (timeout.tv_sec < 86400)                /* Only use timeout for < 1 day */
-      fds = select(MaxFDs, input, output, NULL, &timeout);
-    else
-      fds = select(MaxFDs, input, output, NULL, NULL);
-
-    if (fds < 0)
+    if ((fds = cupsdDoSelect(timeout)) < 0)
     {
-      char     s[16384],               /* String buffer */
-               *sptr;                  /* Pointer into buffer */
-      int      slen;                   /* Length of string buffer */
-
-
      /*
       * Got an error from select!
       */
 
-      if (errno == EINTR)      /* Just interrupted by a signal */
+#ifdef HAVE_DNSSD
+      cupsd_printer_t  *p;             /* Current printer */
+#endif /* HAVE_DNSSD */
+
+
+      if (errno == EINTR)              /* Just interrupted by a signal */
         continue;
 
      /*
       * Log all sorts of debug info to help track down the problem.
       */
 
-      cupsdLogMessage(CUPSD_LOG_EMERG, "select() failed - %s!",
+      cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!",
                       strerror(errno));
 
-      strcpy(s, "InputSet =");
-      slen = 10;
-      sptr = s + 10;
-
-      for (i = 0; i < MaxFDs; i ++)
-        if (FD_ISSET(i, InputSet))
-       {
-          snprintf(sptr, sizeof(s) - slen, " %d", i);
-         slen += strlen(sptr);
-         sptr += strlen(sptr);
-       }
-
-      cupsdLogMessage(CUPSD_LOG_EMERG, "%s", s);
-
-      strcpy(s, "OutputSet =");
-      slen = 11;
-      sptr = s + 11;
-
-      for (i = 0; i < MaxFDs; i ++)
-        if (FD_ISSET(i, OutputSet))
-       {
-          snprintf(sptr, sizeof(s) - slen, " %d", i);
-         slen += strlen(sptr);
-         sptr += strlen(sptr);
-       }
-
-      cupsdLogMessage(CUPSD_LOG_EMERG, "%s", s);
-
       for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients);
           con;
           i ++, con = (cupsd_client_t *)cupsArrayNext(Clients))
@@ -772,6 +715,15 @@ main(int  argc,                            /* I - Number of command-line args */
                        job->status_buffer ? job->status_buffer->fd : -1,
                        job->print_pipes[0], job->print_pipes[1],
                        job->back_pipes[0], job->back_pipes[1]);
+
+#ifdef HAVE_DNSSD
+      for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
+          p;
+          p = (cupsd_printer_t *)cupsArrayNext(Printers))
+        cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] %d", p->name,
+                       p->dnssd_ipp_fd);
+#endif /* HAVE_DNSSD */
+
       break;
     }
 
@@ -793,67 +745,6 @@ main(int  argc,                            /* I - Number of command-line args */
     }
 #endif /* HAVE_LAUNCHD */
 
-   /*
-    * Check for status info from job filters...
-    */
-
-    for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs);
-        job;
-        job = (cupsd_job_t *)cupsArrayNext(ActiveJobs))
-      if (job->status_buffer && FD_ISSET(job->status_buffer->fd, input))
-      {
-       /*
-        * Clear the input bit to avoid updating the next job
-       * using the same status pipe file descriptor...
-       */
-
-        FD_CLR(job->status_buffer->fd, input);
-
-       /*
-        * Read any status messages from the filters...
-       */
-
-        cupsdUpdateJob(job);
-      }
-
-   /*
-    * Update CGI messages as needed...
-    */
-
-    if (CGIPipes[0] >= 0 && FD_ISSET(CGIPipes[0], input))
-      cupsdUpdateCGI();
-
-   /*
-    * Handle system management events as needed...
-    */
-
-#ifdef __APPLE__
-   /*
-    * Mac OS X provides the SystemConfiguration framework for system
-    * configuration change events...
-    */
-
-    if (SysEventPipes[0] >= 0 && FD_ISSET(SysEventPipes[0], input))
-      cupsdUpdateSystemMonitor();
-#else
-   /*
-    * All other operating systems need to poll for changes...
-    */
-
-    if ((current_time - netif_time) >= 60)
-    {
-      NetIFUpdate = 1;
-      netif_time  = current_time;
-    }
-#endif /* __APPLE__ */
-
-   /*
-    * Update notifier messages as needed...
-    */
-
-    if (NotifierPipes[0] >= 0 && FD_ISSET(NotifierPipes[0], input))
-      cupsdUpdateNotifierStatus();
-
    /*
     * Expire subscriptions and unload completed jobs as needed...
     */
@@ -872,14 +763,8 @@ main(int  argc,                            /* I - Number of command-line args */
     * Update the browse list as needed...
     */
 
-    if (Browsing && BrowseRemoteProtocols)
+    if (Browsing)
     {
-      if (BrowseSocket >= 0 && FD_ISSET(BrowseSocket, input))
-        cupsdUpdateCUPSBrowse();
-
-      if (PollPipe >= 0 && FD_ISSET(PollPipe, input))
-        cupsdUpdatePolling();
-
 #ifdef HAVE_LIBSLP
       if ((BrowseRemoteProtocols & BROWSE_SLP) &&
           BrowseSLPRefresh <= current_time)
@@ -900,17 +785,20 @@ main(int  argc,                           /* I - Number of command-line args */
     }
 
    /*
-    * Check for new connections on the "listen" sockets...
+    * Update the root certificate once every 5 minutes if we have client
+    * connections...
     */
 
-    for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
-         lis;
-        lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
-      if (lis->fd >= 0 && FD_ISSET(lis->fd, input))
-      {
-        FD_CLR(lis->fd, input);
-        cupsdAcceptClient(lis);
-      }
+    if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration &&
+        !RunUser && cupsArrayCount(Clients))
+    {
+     /*
+      * Update the root certificate...
+      */
+
+      cupsdDeleteCert(0);
+      cupsdAddCert(0, "root");
+    }
 
    /*
     * Check for new data on the client sockets...
@@ -921,61 +809,13 @@ main(int  argc,                           /* I - Number of command-line args */
         con = (cupsd_client_t *)cupsArrayNext(Clients))
     {
      /*
-      * Process the input buffer...
+      * Process pending data in the input buffer...
       */
 
-      if (FD_ISSET(con->http.fd, input) || con->http.used)
+      if (con->http.used)
       {
-        int fd = con->file;
-
-
-        FD_CLR(con->http.fd, input);
-
-        if (!cupsdReadClient(con))
-       {
-         if (fd >= 0)
-           FD_CLR(fd, input);
-
-         continue;
-       }
-      }
-
-     /*
-      * Write data as needed...
-      */
-
-      if (con->pipe_pid && FD_ISSET(con->file, input))
-      {
-       /*
-        * Keep track of pending input from the file/pipe separately
-       * so that we don't needlessly spin on select() when the web
-       * client is not ready to receive data...
-       */
-
-       FD_CLR(con->file, input);
-        con->file_ready = 1;
-
-#ifdef DEBUG
-        cupsdLogMessage(CUPSD_LOG_DEBUG2, "main: Data ready file %d!",
-                       con->file);
-#endif /* DEBUG */
-
-       if (!FD_ISSET(con->http.fd, output))
-       {
-         cupsdLogMessage(CUPSD_LOG_DEBUG2,
-                         "main: Removing fd %d from InputSet...", con->file);
-         FD_CLR(con->file, input);
-         FD_CLR(con->file, InputSet);
-       }
-      }
-
-      if (FD_ISSET(con->http.fd, output))
-      {
-        FD_CLR(con->http.fd, output);
-
-       if (!con->pipe_pid || con->file_ready)
-          if (!cupsdWriteClient(con))
-           continue;
+        cupsdReadClient(con);
+       continue;
       }
 
      /*
@@ -1031,22 +871,6 @@ main(int  argc,                           /* I - Number of command-line args */
       mallinfo_time = current_time;
     }
 
-   /*
-    * Update the root certificate once every 5 minutes if we have client
-    * connections...
-    */
-
-    if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration &&
-        !RunUser && cupsArrayCount(Clients))
-    {
-     /*
-      * Update the root certificate...
-      */
-
-      cupsdDeleteCert(0);
-      cupsdAddCert(0, "root");
-    }
-
    /*
     * Handle OS-specific event notification for any events that have
     * accumulated.  Don't send these more than once a second...
@@ -1111,17 +935,27 @@ main(int  argc,                          /* I - Number of command-line args */
 
 #ifdef HAVE_LAUNCHD
  /*
-  * Update the launchd config file as needed...
+  * Update the launchd KeepAlive file as needed...
   */
 
-  launchd_sync_conf();
+  if (Launchd)
+    launchd_checkout();
+#endif /* HAVE_LAUNCHD */
 
-  if (launchd_conf_url)
-    CFRelease(launchd_conf_url);
+#ifdef __APPLE__
+#ifdef HAVE_DLFCN_H
+ /* 
+  * Unload Print Service quota enforcement library (X Server only) 
+  */
 
-  if (launchd_conf_dict)
-    CFRelease(launchd_conf_dict);
-#endif /* HAVE_LAUNCHD */
+  PSQUpdateQuotaProc = NULL;
+  if (PSQLibRef)
+  {
+    dlclose(PSQLibRef);
+    PSQLibRef = NULL;
+  }
+#endif /* HAVE_DLFCN_H */
+#endif /* __APPLE__ */
 
 #ifdef __sgi
  /*
@@ -1135,14 +969,7 @@ main(int  argc,                           /* I - Number of command-line args */
       unlink("/var/spool/lp/SCHEDLOCK");
 #endif /* __sgi */
 
- /*
-  * Free memory used by FD sets and return...
-  */
-
-  free(InputSet);
-  free(OutputSet);
-  free(input);
-  free(output);
+  cupsdStopSelect();
 
   return (!stop_scheduler);
 }
@@ -1364,6 +1191,8 @@ launchd_checkin(void)
   cupsd_listener_t     *lis;           /* Listeners array */
   http_addr_t          addr;           /* Address variable */
   socklen_t            addrlen;        /* Length of address */
+  int                  fd;             /* File descriptor */
+  char                 s[256];         /* String addresss */
 
 
   cupsdLogMessage(CUPSD_LOG_DEBUG, "launchd_checkin: pid=%d", (int)getpid());
@@ -1417,515 +1246,123 @@ launchd_checkin(void)
 
   if (launch_data_get_type(ld_array) == LAUNCH_DATA_ARRAY)
   {
-   /*
-    * Free the listeners array built from cupsd.conf...
-    */
-
-    cupsdDeleteAllListeners();
-
-   /*
-    * Create a new array of listeners from the launchd data...
-    */
-
-    Listeners = cupsArrayNew(NULL, NULL);
-    count     = launch_data_array_get_count(ld_array);
+    count = launch_data_array_get_count(ld_array);
 
     for (i = 0; i < count; i ++)
     {
      /*
-      * Copy the current address and log it...
+      * Get the launchd file descriptor and address...
       */
 
-      if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL)
-      {
-       cupsdLogMessage(CUPSD_LOG_ERROR,
-                       "launchd_checkin: Unable to allocate listener - %s.",
-                       strerror(errno));
-       exit(EXIT_FAILURE);
-      }
-
-      cupsArrayAdd(Listeners, lis);
-
       tmp     = launch_data_array_get_index(ld_array, i);
-      lis->fd = launch_data_get_fd(tmp);
-      addrlen = sizeof(lis->address);
+      fd      = launch_data_get_fd(tmp);
+      addrlen = sizeof(addr);
 
-      if (getsockname(lis->fd, (struct sockaddr *)&(lis->address), &addrlen))
+      if (getsockname(fd, (struct sockaddr *)&addr, &addrlen))
       {
        cupsdLogMessage(CUPSD_LOG_ERROR,
                        "launchd_checkin: Unable to get local address - %s",
                        strerror(errno));
+       continue;
       }
 
-#  ifdef HAVE_SSL
-      portnum = 0;
-
-#    ifdef AF_INET6
-      if (addr.addr.sa_family == AF_INET6)
-       portnum = ntohs(addr.ipv6.sin6_port);
-      else
-#    endif /* AF_INET6 */
-      if (addr.addr.sa_family == AF_INET)
-       portnum = ntohs(addr.ipv4.sin_port);
-
-      if (portnum == 443)
-       lis->encryption = HTTP_ENCRYPT_ALWAYS;
-#  endif /* HAVE_SSL */
-    }
-  }
-
- /*
-  * Collect the browse socket (if there is one)...
-  */
-
-  if ((ld_array = launch_data_dict_lookup(ld_sockets, "BrowseSockets")))
-  {
-    if (launch_data_get_type(ld_array) == LAUNCH_DATA_ARRAY)
-    {
-      if ((tmp = launch_data_array_get_index(ld_array, 0)))
-      {
-       if (launch_data_get_type(tmp) == LAUNCH_DATA_FD)
-       {
-         if (BrowseSocket != -1)
-           close(BrowseSocket);
-
-         BrowseSocket = launch_data_get_fd(tmp);
-       }
-       else
-         cupsdLogMessage(CUPSD_LOG_WARN,
-                         "launchd_checkin: BrowseSocket not a fd!");
-     }
-     else
-       cupsdLogMessage(CUPSD_LOG_WARN,
-                      "launchd_checkin: BrowseSockets is an empty array!");
-   }
-   else
-     cupsdLogMessage(CUPSD_LOG_WARN,
-                     "launchd_checkin: BrowseSockets is not an array!");
-  }
-  else
-    cupsdLogMessage(CUPSD_LOG_DEBUG, "launchd_checkin: No BrowseSockets");
-
-  launch_data_free(ld_msg);
-  launch_data_free(ld_resp);
-}
-
-
-/*
- * 'launchd_create_dict()' - Create a dictionary representing the launchd
- *                          config file org.cups.cupsd.plist.
- */
-
-static CFDictionaryRef                 /* O - CFDictionary */
-launchd_create_dict(void)
-{
-  int                    portnum;      /* Port number */
-  bool                   runatload;    /* Run at load? */
-  CFMutableDictionaryRef  cupsd_dict,  /* org.cups.cupsd.plist dictionary */
-                         sockets,      /* Sockets dictionary */
-                         listener;     /* Listener dictionary */
-  CFMutableArrayRef      array;        /* Array */
-  CFNumberRef            socket_mode;  /* Domain socket mode bits */
-  CFStringRef            socket_path;  /* Domain socket path */
-  CFTypeRef              value;        /* CF values */
-  cupsd_listener_t       *lis;         /* Current listening socket */
-  struct servent         *service;     /* Services data base entry */
-  char                   temp[1024];   /* Temporary buffer for value */
-
-
-  if ((cupsd_dict = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
-                               &kCFTypeDictionaryKeyCallBacks,
-                               &kCFTypeDictionaryValueCallBacks)) == NULL)
-    return NULL;
-
-  CFDictionaryAddValue(cupsd_dict, CFSTR(LAUNCH_JOBKEY_LABEL),
-                      CFSTR("org.cups.cupsd"));
-  CFDictionaryAddValue(cupsd_dict, CFSTR(LAUNCH_JOBKEY_ONDEMAND),
-                      kCFBooleanTrue);
-
- /*
-  * Run-at-load if there are active jobs, polling or shared printers
-  * to advertise...
-  */
-  
-  runatload = (cupsArrayCount(ActiveJobs) || NumPolled || 
-              (Browsing && BrowseLocalProtocols && 
-               NumBrowsers && cupsArrayCount(Printers))) ? true : false;
-
-  CFDictionaryAddValue(cupsd_dict, CFSTR(LAUNCH_JOBKEY_RUNATLOAD),
-                      runatload ? kCFBooleanTrue : kCFBooleanFalse);
-#  ifdef LAUNCH_JOBKEY_SERVICEIPC
-  CFDictionaryAddValue(cupsd_dict, CFSTR(LAUNCH_JOBKEY_SERVICEIPC),
-                      kCFBooleanTrue);
-#  endif /* LAUNCH_JOBKEY_SERVICEIPC */
-
-  if ((array = CFArrayCreateMutable(kCFAllocatorDefault, 2,
-                                   &kCFTypeArrayCallBacks)) != NULL)
-  {
-    CFDictionaryAddValue(cupsd_dict, CFSTR(LAUNCH_JOBKEY_PROGRAMARGUMENTS),
-                        array);
-    CFArrayAppendValue(array, CFSTR("/usr/sbin/cupsd"));
-    CFArrayAppendValue(array, CFSTR("-l"));
-    CFRelease(array);
-  }
-
- /*
-  * Add a sockets dictionary...
-  */
-
-  if ((sockets = (CFMutableDictionaryRef)CFDictionaryCreateMutable(
-                             kCFAllocatorDefault, 0,
-                             &kCFTypeDictionaryKeyCallBacks,
-                             &kCFTypeDictionaryValueCallBacks)) != NULL)
-  {
-    CFDictionaryAddValue(cupsd_dict, CFSTR(LAUNCH_JOBKEY_SOCKETS), sockets);
-
-   /*
-    * Add a Listeners array to the sockets dictionary...
-    */
-
-    if ((array = CFArrayCreateMutable(kCFAllocatorDefault, 0,
-                                     &kCFTypeArrayCallBacks)) != NULL)
-    {
-      CFDictionaryAddValue(sockets, CFSTR("Listeners"), array);
-
      /*
-      * For each listener add a dictionary to the listeners array...
+      * Try to match the launchd socket address to one of the listeners...
       */
 
       for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
           lis;
           lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
-      {
-       if ((listener = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
-                             &kCFTypeDictionaryKeyCallBacks,
-                             &kCFTypeDictionaryValueCallBacks)) != NULL)
-       {
-         CFArrayAppendValue(array, listener);
-
-#  ifdef AF_LOCAL
-         if (lis->address.addr.sa_family == AF_LOCAL)
-         {
-           if ((socket_path = CFStringCreateWithCString(kCFAllocatorDefault,
-                                     lis->address.un.sun_path,
-                                     kCFStringEncodingUTF8)))
-           {
-             CFDictionaryAddValue(listener,
-                                  CFSTR(LAUNCH_JOBSOCKETKEY_PATHNAME),
-                                  socket_path);
-             CFRelease(socket_path);
-           }
-           portnum = 0140777; /* (S_IFSOCK|S_IRWXU|S_IRWXG|S_IRWXO) or *
-                               * 49663d decimal                        */
-           if ((socket_mode = CFNumberCreate(kCFAllocatorDefault,
-                                             kCFNumberIntType, &portnum)))
-           {
-             CFDictionaryAddValue(listener, CFSTR("SockPathMode"),
-                                  socket_mode);
-             CFRelease(socket_mode);
-           }
-         }
-         else
-#  endif /* AF_LOCAL */
-         {
-#  ifdef AF_INET6
-           if (lis->address.addr.sa_family == AF_INET6)
-           {
-             CFDictionaryAddValue(listener,
-                                  CFSTR(LAUNCH_JOBSOCKETKEY_FAMILY),
-                                  CFSTR("IPv6"));
-             portnum = lis->address.ipv6.sin6_port;
-           }
-           else
-#  endif /* AF_INET6 */
-           {
-             CFDictionaryAddValue(listener,
-                                  CFSTR(LAUNCH_JOBSOCKETKEY_FAMILY),
-                                  CFSTR("IPv4"));
-             portnum = lis->address.ipv4.sin_port;
-           }
-
-           if ((service = getservbyport(portnum, NULL)))
-             value = CFStringCreateWithCString(kCFAllocatorDefault,
-                                               service->s_name,
-                                               kCFStringEncodingUTF8);
-           else
-             value = CFNumberCreate(kCFAllocatorDefault,
-                                    kCFNumberIntType, &portnum);
+       if (httpAddrEqual(&lis->address, &addr))
+         break;
 
-           if (value)
-           {
-             CFDictionaryAddValue(listener,
-                                  CFSTR(LAUNCH_JOBSOCKETKEY_SERVICENAME),
-                                  value);
-             CFRelease(value);
-           }   
-
-           httpAddrString(&lis->address, temp, sizeof(temp));
-           if ((value = CFStringCreateWithCString(kCFAllocatorDefault, temp,
-                                                  kCFStringEncodingUTF8)))
-           {
-             CFDictionaryAddValue(listener,
-                                  CFSTR(LAUNCH_JOBSOCKETKEY_NODENAME),
-                                  value);
-             CFRelease(value);
-           }
-         }
+     /*
+      * Add a new listener If there's no match...
+      */
 
-         CFRelease(listener);
-       }
+      if (lis)
+      {
+       cupsdLogMessage(CUPSD_LOG_DEBUG, 
+               "launchd_checkin: Matched existing listener %s with fd %d...",
+               httpAddrString(&(lis->address), s, sizeof(s)), fd);
       }
-
-      CFRelease(array);
-    }
-
-   /*
-    * Add the BrowseSocket to the sockets dictionary...
-    */
-
-    if (Browsing && (BrowseRemoteProtocols & BROWSE_CUPS))
-    {
-      if ((array = CFArrayCreateMutable(kCFAllocatorDefault, 0,
-                                       &kCFTypeArrayCallBacks)) != NULL)
+      else
       {
-       CFDictionaryAddValue(sockets, CFSTR("BrowseSockets"), array);
-
-       if ((listener = CFDictionaryCreateMutable(kCFAllocatorDefault, 0,
-                               &kCFTypeDictionaryKeyCallBacks,
-                               &kCFTypeDictionaryValueCallBacks)) != NULL)
-       {
-         CFArrayAppendValue(array, listener);
-
-         CFDictionaryAddValue(listener, CFSTR(LAUNCH_JOBSOCKETKEY_FAMILY),
-                              CFSTR("IPv4"));
-         CFDictionaryAddValue(listener, CFSTR(LAUNCH_JOBSOCKETKEY_TYPE),
-                              CFSTR("dgram"));
+       cupsdLogMessage(CUPSD_LOG_DEBUG, 
+               "launchd_checkin: Adding new listener %s with fd %d...",
+               httpAddrString(&addr, s, sizeof(s)), fd);
 
-         if ((service = getservbyport(BrowsePort, NULL)))
-           value = CFStringCreateWithCString(kCFAllocatorDefault,
-                                             service->s_name,
-                                             kCFStringEncodingUTF8);
-         else
-           value = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType,
-                                  &BrowsePort);
+        if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL)
+        {
+         cupsdLogMessage(CUPSD_LOG_ERROR,
+                                 "launchd_checkin: Unable to allocate listener - %s.",
+                         strerror(errno));
+         exit(EXIT_FAILURE);
+        }
 
-         CFDictionaryAddValue(listener,
-                              CFSTR(LAUNCH_JOBSOCKETKEY_SERVICENAME), value);
-         CFRelease(value);
+        cupsArrayAdd(Listeners, lis);
 
-         CFRelease(listener);
-       }
-
-       CFRelease(array);
+       memcpy(&lis->address, &addr, sizeof(lis->address));
       }
-    }
-
-    CFRelease(sockets);
-  }
-
-  return (cupsd_dict);
-}
-
-
-/*
- * 'launchd_reload()' - Tell launchd to reload the configuration file to pick
- *                      up the new listening directives.
- */
-
-static void
-launchd_reload(void)
-{
-  int          child_status;           /* Exit status of child process */
-  pid_t                child_pid,              /* Child PID */
-               waitpid_status;         /* Child process exit status */
-  char         *argv[4];               /* Argument strings */
 
+      lis->fd = fd;
 
- /*
-  * The current launchd doesn't support a reload option (rdar://3854821).
-  * Until this is fixed we need to reload the config file by execing launchctl
-  * twice (to unload then load). NOTE: This will cause us to exit on SIGTERM
-  * which will cancel all client & job activity.
-  *
-  * After this is fixed we'll be able to tell launchd to reload the file
-  * and pick up the new listening descriptors without disrupting current
-  * activity.
-  */
-
- /*
-  * Unloading the current configuration will cause launchd to send us a SIGTERM;
-  * block it for now so we can get our work done...
-  */
-
-  cupsdHoldSignals();
-
- /*
-  * Set up the unload arguments to launchctl...
-  */
-
-  argv[0] = "/bin/launchctl";
-  argv[1] = "unload";
-  argv[2] = LaunchdConf;
-  argv[3] = NULL;
-
-  if (cupsdStartProcess(argv[0], argv, NULL, -1, -1, -1, -1, 1, &child_pid) < 0)
-    cupsdLogMessage(CUPSD_LOG_ERROR,
-                    "launchd_reload: Unable to execute %s - %s", argv[0],
-                    strerror(errno));
-  else
-  {
-    do
-    {
-      waitpid_status = waitpid(child_pid, &child_status, 0);
-    }
-    while (waitpid_status == (pid_t)-1 && errno == EINTR);
-
-    if (WIFSIGNALED(child_status))
-      cupsdLogMessage(CUPSD_LOG_DEBUG,
-                      "launchd_reload: %s pid %d crashed on signal %d!",
-                     basename(argv[0]), child_pid, WTERMSIG(child_status));
-    else
-      cupsdLogMessage(CUPSD_LOG_DEBUG,
-                      "launchd_reload: %s pid %d stopped with status %d!",
-                     basename(argv[0]), child_pid, WEXITSTATUS(child_status));
-
-   /*
-    * Do it again with the load command...
-    */
-
-    argv[1] = "load";
-
-    if (cupsdStartProcess(argv[0], argv, NULL, -1, -1, -1, -1, 1,
-                          &child_pid) < 0)
-    {
-      cupsdLogMessage(CUPSD_LOG_ERROR,
-                      "launchd_reload: Unable to fork for %s - %s", argv[0],
-                      strerror(errno));
-    }
-    else
-    {
-      do
-      {
-       waitpid_status = waitpid(child_pid, &child_status, 0);
-      } while (waitpid_status == (pid_t)-1 && errno == EINTR);
+#  ifdef HAVE_SSL
+      portnum = 0;
 
-      if (WIFSIGNALED(child_status))
-       cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "launchd_reload: %s pid %d crashed on signal %d!",
-                       basename(argv[0]), child_pid, WTERMSIG(child_status));
+#    ifdef AF_INET6
+      if (lis->address.addr.sa_family == AF_INET6)
+       portnum = ntohs(lis->address.ipv6.sin6_port);
       else
-       cupsdLogMessage(CUPSD_LOG_DEBUG,
-                       "launchd_reload: %s pid %d stopped with status %d",
-                       basename(argv[0]), child_pid,
-                       WEXITSTATUS(child_status));
+#    endif /* AF_INET6 */
+      if (lis->address.addr.sa_family == AF_INET)
+       portnum = ntohs(lis->address.ipv4.sin_port);
+
+      if (portnum == 443)
+       lis->encryption = HTTP_ENCRYPT_ALWAYS;
+#  endif /* HAVE_SSL */
     }
   }
 
- /*
-  * Leave signals blocked since exit() will be called momentarily anyways...
-  */
+  launch_data_free(ld_msg);
+  launch_data_free(ld_resp);
 }
 
 
 /*
- * 'launchd_sync_conf()' - Rewrite the launchd config file
- *                        org.cups.cupsd.plist based on cupsd.conf.
+ * 'launchd_checkout()' - Update the launchd KeepAlive file as needed.
  */
 
-static int                             /* O - 1 if the file was updated */
-launchd_sync_conf(void)
+static void
+launchd_checkout(void)
 {
-  SInt32               errorCode;      /* Error code */
-  CFDataRef            resourceData;   /* XML property list */
-  CFDictionaryRef      cupsd_dict;     /* New org.cups.cupsd.plist dict */
+  int  fd;                             /* File descriptor */
 
 
  /*
-  * If needed reconstitute the existing org.cups.cupsd.plist...
+  * Create or remove the launchd KeepAlive file based on whether
+  * there are active jobs, polling, browsing for remote printers or 
+  * shared printers to advertise...
   */
 
-  if (!launchd_conf_url && 
-      !(launchd_conf_url = CFURLCreateFromFileSystemRepresentation(
-                               kCFAllocatorDefault,
-                               (const unsigned char *)LaunchdConf,
-                               strlen(LaunchdConf), false)))
+  if ((cupsArrayCount(ActiveJobs) || NumPolled || 
+       (Browsing && 
+       (BrowseRemoteProtocols ||
+        (BrowseLocalProtocols && NumBrowsers && cupsArrayCount(Printers))))))
   {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_sync_conf: "
-                   "Unable to create file URL for \"%s\"\n", LaunchdConf);
-    return (0);
-  }
+    cupsdLogMessage(CUPSD_LOG_DEBUG,
+                    "Creating launchd keepalive file \"" CUPS_KEEPALIVE "\"...");
 
-  if (!launchd_conf_dict)
-  {
-    if (CFURLCreateDataAndPropertiesFromResource(NULL, launchd_conf_url, 
-                               &resourceData, NULL, NULL, &errorCode))
-    {
-      launchd_conf_dict = CFPropertyListCreateFromXMLData(NULL, resourceData,
-                                             kCFPropertyListImmutable, NULL);
-      CFRelease(resourceData);
-    }
-
-    if (!launchd_conf_dict)
-    {
-      cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_sync_conf: "
-                     "Unable to create dictionary for \"%s\"\n", LaunchdConf);
-    }
+    if ((fd = open(CUPS_KEEPALIVE, O_RDONLY | O_CREAT | O_EXCL, S_IRUSR)) >= 0)
+      close(fd);
   }
-
- /*
-  * Create a new org.cups.cupsd.plist dictionary...
-  */
-
-  if ((cupsd_dict = launchd_create_dict()) == NULL)
-  {
-    cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_sync_conf: "
-                   "Unable to create file URL for \"%s\"\n", LaunchdConf);
-    return (0);
-  }
-
- /*
-  * If the dictionaries are different write a new org.cups.cupsd.plist...
-  */
-
-  if (!CFEqual(cupsd_dict, launchd_conf_dict))
+  else
   {
-    if ((resourceData = CFPropertyListCreateXMLData(kCFAllocatorDefault,
-                                                 cupsd_dict)))
-    {
-      if (CFURLWriteDataAndPropertiesToResource(launchd_conf_url, resourceData,
-                                                NULL, &errorCode))
-      {
-       /*
-        * The new cupsd dictionary becomes the on-disk launchd dictionary...
-        */
-
-       if (launchd_conf_dict)
-         CFRelease(launchd_conf_dict);
-
-       launchd_conf_dict = cupsd_dict;
-      }
-      else
-      {
-       cupsdLogMessage(CUPSD_LOG_WARN,
-                       "launchd_sync_conf: "
-                       "CFURLWriteDataAndPropertiesToResource(\"%s\") "
-                       "failed: %d\n",
-                       LaunchdConf, (int)errorCode);
-
-       CFRelease(cupsd_dict);
-      }
-  
-      CFRelease(resourceData);
-    }
+    cupsdLogMessage(CUPSD_LOG_DEBUG,
+                    "Removing launchd keepalive file \"" CUPS_KEEPALIVE "\"...");
 
-   /*
-    * Let the caller know we updated the file...
-    */
-
-    return (1);
+    unlink(CUPS_KEEPALIVE);
   }
-
-  return (0);
 }
 #endif /* HAVE_LAUNCHD */
 
@@ -2174,12 +1611,12 @@ select_timeout(int fds)                 /* I - Number of descriptors returned */
       return (0);
 
  /*
-  * If select has been active in the last second (fds != 0) or we have
+  * If select has been active in the last second (fds > 0) or we have
   * many resources in use then don't bother trying to optimize the
   * timeout, just make it 1 second.
   */
 
-  if (fds || cupsArrayCount(Clients) > 50)
+  if (fds > 0 || cupsArrayCount(Clients) > 50)
     return (1);
 
  /*
@@ -2225,7 +1662,7 @@ select_timeout(int fds)                   /* I - Number of descriptors returned */
     }
 #endif /* HAVE_LDAP */
 
-    if (BrowseLocalProtocols & BROWSE_CUPS)
+    if ((BrowseLocalProtocols & BROWSE_CUPS) && NumBrowsers)
     {
       for (p = (cupsd_printer_t *)cupsArrayFirst(Printers);
            p;
@@ -2239,7 +1676,7 @@ select_timeout(int fds)                   /* I - Number of descriptors returned */
            why     = "browse timeout a printer";
          }
        }
-       else if (!(p->type & CUPS_PRINTER_IMPLICIT))
+       else if (p->shared && !(p->type & CUPS_PRINTER_IMPLICIT))
        {
          if (BrowseInterval && (p->browse_time + BrowseInterval) < timeout)
          {
@@ -2313,8 +1750,8 @@ select_timeout(int fds)                   /* I - Number of descriptors returned */
   * Log and return the timeout value...
   */
 
-  cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout: %ld seconds to %s",
-                  timeout, why);
+  cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s",
+                  fds, timeout, why);
 
   return (timeout);
 }
@@ -2340,5 +1777,5 @@ usage(int status)                 /* O - Exit status */
 
 
 /*
- * End of "$Id: main.c 6090 2006-11-14 16:35:27Z mike $".
+ * End of "$Id: main.c 6654 2007-07-12 22:07:57Z mike $".
  */