2 * Client routines for the CUPS scheduler.
4 * Copyright 2007-2015 by Apple Inc.
5 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
7 * This file contains Kerberos support code, copyright 2006 by
10 * These coded instructions, statements, and computer programs are the
11 * property of Apple Inc. and are protected by Federal copyright
12 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
13 * which should have been included with this file. If this file is
14 * file is missing or damaged, see the license at "http://www.cups.org/".
18 * Include necessary headers...
21 #define _CUPS_NO_DEPRECATED
22 #define _HTTP_NO_PRIVATE
27 #endif /* __APPLE__ */
30 #endif /* HAVE_TCPD_H */
37 static int check_if_modified(cupsd_client_t
*con
,
38 struct stat
*filestats
);
39 static int compare_clients(cupsd_client_t
*a
, cupsd_client_t
*b
,
42 static int cupsd_start_tls(cupsd_client_t
*con
, http_encryption_t e
);
44 static char *get_file(cupsd_client_t
*con
, struct stat
*filestats
,
45 char *filename
, size_t len
);
46 static http_status_t
install_cupsd_conf(cupsd_client_t
*con
);
47 static int is_cgi(cupsd_client_t
*con
, const char *filename
,
48 struct stat
*filestats
, mime_type_t
*type
);
49 static int is_path_absolute(const char *path
);
50 static int pipe_command(cupsd_client_t
*con
, int infile
, int *outfile
,
51 char *command
, char *options
, int root
);
52 static int valid_host(cupsd_client_t
*con
);
53 static int write_file(cupsd_client_t
*con
, http_status_t code
,
54 char *filename
, char *type
,
55 struct stat
*filestats
);
56 static void write_pipe(cupsd_client_t
*con
);
60 * 'cupsdAcceptClient()' - Accept a new client.
64 cupsdAcceptClient(cupsd_listener_t
*lis
)/* I - Listener socket */
66 const char *hostname
; /* Hostname of client */
67 char name
[256]; /* Hostname of client */
68 int count
; /* Count of connections on a host */
69 cupsd_client_t
*con
, /* New client pointer */
70 *tempcon
; /* Temporary client pointer */
71 socklen_t addrlen
; /* Length of address */
72 http_addr_t temp
; /* Temporary address variable */
73 static time_t last_dos
= 0; /* Time of last DoS attack */
75 struct request_info wrap_req
; /* TCP wrappers request information */
76 #endif /* HAVE_TCPD_H */
79 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "cupsdAcceptClient(lis=%p(%d)) Clients=%d", lis
, lis
->fd
, cupsArrayCount(Clients
));
82 * Make sure we don't have a full set of clients already...
85 if (cupsArrayCount(Clients
) == MaxClients
)
89 * Get a pointer to the next available client...
93 Clients
= cupsArrayNew(NULL
, NULL
);
97 cupsdLogMessage(CUPSD_LOG_ERROR
,
98 "Unable to allocate memory for clients array!");
99 cupsdPauseListening();
104 ActiveClients
= cupsArrayNew((cups_array_func_t
)compare_clients
, NULL
);
108 cupsdLogMessage(CUPSD_LOG_ERROR
,
109 "Unable to allocate memory for active clients array!");
110 cupsdPauseListening();
114 if ((con
= calloc(1, sizeof(cupsd_client_t
))) == NULL
)
116 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to allocate memory for client!");
117 cupsdPauseListening();
122 * Accept the client and get the remote address...
125 con
->number
= ++ LastClientNumber
;
128 if ((con
->http
= httpAcceptConnection(lis
->fd
, 0)) == NULL
)
130 if (errno
== ENFILE
|| errno
== EMFILE
)
131 cupsdPauseListening();
133 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to accept client connection - %s.",
141 * Save the connected address and port number...
144 addrlen
= sizeof(con
->clientaddr
);
146 if (getsockname(httpGetFd(con
->http
), (struct sockaddr
*)&con
->clientaddr
, &addrlen
) || addrlen
== 0)
147 con
->clientaddr
= lis
->address
;
149 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Server address is \"%s\".", httpAddrString(&con
->clientaddr
, name
, sizeof(name
)));
152 * Check the number of clients on the same address...
155 for (count
= 0, tempcon
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
157 tempcon
= (cupsd_client_t
*)cupsArrayNext(Clients
))
158 if (httpAddrEqual(httpGetAddress(tempcon
->http
), httpGetAddress(con
->http
)))
161 if (count
>= MaxClientsPerHost
)
165 if (count
>= MaxClientsPerHost
)
167 if ((time(NULL
) - last_dos
) >= 60)
169 last_dos
= time(NULL
);
170 cupsdLogMessage(CUPSD_LOG_WARN
,
171 "Possible DoS attack - more than %d clients connecting "
174 httpGetHostname(con
->http
, name
, sizeof(name
)));
177 httpClose(con
->http
);
183 * Get the hostname or format the IP address as needed...
187 hostname
= httpResolveHostname(con
->http
, NULL
, 0);
189 hostname
= httpGetHostname(con
->http
, NULL
, 0);
191 if (hostname
== NULL
&& HostNameLookups
== 2)
194 * Can't have an unresolved IP address with double-lookups enabled...
197 httpClose(con
->http
);
199 cupsdLogClient(con
, CUPSD_LOG_WARN
,
200 "Name lookup failed - connection from %s closed!",
201 httpGetHostname(con
->http
, NULL
, 0));
207 if (HostNameLookups
== 2)
210 * Do double lookups as needed...
213 http_addrlist_t
*addrlist
, /* List of addresses */
214 *addr
; /* Current address */
216 if ((addrlist
= httpAddrGetList(hostname
, AF_UNSPEC
, NULL
)) != NULL
)
219 * See if the hostname maps to the same IP address...
222 for (addr
= addrlist
; addr
; addr
= addr
->next
)
223 if (httpAddrEqual(httpGetAddress(con
->http
), &(addr
->addr
)))
229 httpAddrFreeList(addrlist
);
234 * Can't have a hostname that doesn't resolve to the same IP address
235 * with double-lookups enabled...
238 httpClose(con
->http
);
240 cupsdLogClient(con
, CUPSD_LOG_WARN
,
241 "IP lookup failed - connection from %s closed!",
242 httpGetHostname(con
->http
, NULL
, 0));
250 * See if the connection is denied by TCP wrappers...
253 request_init(&wrap_req
, RQ_DAEMON
, "cupsd", RQ_FILE
, httpGetFd(con
->http
),
257 if (!hosts_access(&wrap_req
))
259 httpClose(con
->http
);
261 cupsdLogClient(con
, CUPSD_LOG_WARN
,
262 "Connection from %s refused by /etc/hosts.allow and "
263 "/etc/hosts.deny rules.", httpGetHostname(con
->http
, NULL
, 0));
267 #endif /* HAVE_TCPD_H */
270 if (httpAddrFamily(httpGetAddress(con
->http
)) == AF_LOCAL
)
273 socklen_t peersize
; /* Size of peer credentials */
274 pid_t peerpid
; /* Peer process ID */
275 char peername
[256]; /* Name of process */
277 peersize
= sizeof(peerpid
);
278 if (!getsockopt(httpGetFd(con
->http
), SOL_LOCAL
, LOCAL_PEERPID
, &peerpid
,
281 if (!proc_name((int)peerpid
, peername
, sizeof(peername
)))
282 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
283 "Accepted from %s (Domain ???[%d])",
284 httpGetHostname(con
->http
, NULL
, 0), (int)peerpid
);
286 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
287 "Accepted from %s (Domain %s[%d])",
288 httpGetHostname(con
->http
, NULL
, 0), peername
, (int)peerpid
);
291 # endif /* __APPLE__ */
293 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Accepted from %s (Domain)",
294 httpGetHostname(con
->http
, NULL
, 0));
297 #endif /* AF_LOCAL */
298 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Accepted from %s:%d (IPv%d)",
299 httpGetHostname(con
->http
, NULL
, 0),
300 httpAddrPort(httpGetAddress(con
->http
)),
301 httpAddrFamily(httpGetAddress(con
->http
)) == AF_INET
? 4 : 6);
304 * Get the local address the client connected to...
307 addrlen
= sizeof(temp
);
308 if (getsockname(httpGetFd(con
->http
), (struct sockaddr
*)&temp
, &addrlen
))
310 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Unable to get local address - %s",
313 strlcpy(con
->servername
, "localhost", sizeof(con
->servername
));
314 con
->serverport
= LocalPort
;
317 else if (httpAddrFamily(&temp
) == AF_LOCAL
)
319 strlcpy(con
->servername
, "localhost", sizeof(con
->servername
));
320 con
->serverport
= LocalPort
;
322 #endif /* AF_LOCAL */
325 if (httpAddrLocalhost(&temp
))
326 strlcpy(con
->servername
, "localhost", sizeof(con
->servername
));
327 else if (HostNameLookups
)
328 httpAddrLookup(&temp
, con
->servername
, sizeof(con
->servername
));
330 httpAddrString(&temp
, con
->servername
, sizeof(con
->servername
));
332 con
->serverport
= httpAddrPort(&(lis
->address
));
336 * Add the connection to the array of active clients...
339 cupsArrayAdd(Clients
, con
);
342 * Add the socket to the server select.
345 cupsdAddSelect(httpGetFd(con
->http
), (cupsd_selfunc_t
)cupsdReadClient
, NULL
,
348 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Waiting for request.");
351 * Temporarily suspend accept()'s until we lose a client...
354 if (cupsArrayCount(Clients
) == MaxClients
)
355 cupsdPauseListening();
359 * See if we are connecting on a secure port...
362 if (lis
->encryption
== HTTP_ENCRYPTION_ALWAYS
)
365 * https connection; go secure...
368 if (cupsd_start_tls(con
, HTTP_ENCRYPTION_ALWAYS
))
369 cupsdCloseClient(con
);
373 #endif /* HAVE_SSL */
378 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
382 cupsdCloseAllClients(void)
384 cupsd_client_t
*con
; /* Current client */
387 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "cupsdCloseAllClients() Clients=%d", cupsArrayCount(Clients
));
389 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
391 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
392 if (cupsdCloseClient(con
))
393 cupsdCloseClient(con
);
398 * 'cupsdCloseClient()' - Close a remote client.
401 int /* O - 1 if partial close, 0 if fully closed */
402 cupsdCloseClient(cupsd_client_t
*con
) /* I - Client to close */
404 int partial
; /* Do partial close for SSL? */
407 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing connection.");
410 * Flush pending writes before closing...
413 httpFlushWrite(con
->http
);
417 if (con
->pipe_pid
!= 0)
420 * Stop any CGI process...
423 cupsdEndProcess(con
->pipe_pid
, 1);
429 cupsdRemoveSelect(con
->file
);
436 * Close the socket and clear the file from the input set for select()...
439 if (httpGetFd(con
->http
) >= 0)
441 cupsArrayRemove(ActiveClients
, con
);
446 * Shutdown encryption as needed...
449 if (httpIsEncrypted(con
->http
))
451 #endif /* HAVE_SSL */
456 * Only do a partial close so that the encrypted client gets everything.
459 httpShutdown(con
->http
);
460 cupsdAddSelect(httpGetFd(con
->http
), (cupsd_selfunc_t
)cupsdReadClient
,
463 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Waiting for socket close.");
468 * Shut the socket down fully...
471 cupsdRemoveSelect(httpGetFd(con
->http
));
472 httpClose(con
->http
);
483 cupsdRemoveSelect(httpGetFd(con
->http
));
485 httpClose(con
->http
);
489 unlink(con
->filename
);
490 cupsdClearString(&con
->filename
);
493 cupsdClearString(&con
->command
);
494 cupsdClearString(&con
->options
);
495 cupsdClearString(&con
->query_string
);
499 ippDelete(con
->request
);
505 ippDelete(con
->response
);
506 con
->response
= NULL
;
511 cupsLangFree(con
->language
);
512 con
->language
= NULL
;
515 #ifdef HAVE_AUTHORIZATION_H
518 AuthorizationFree(con
->authref
, kAuthorizationFlagDefaults
);
521 #endif /* HAVE_AUTHORIZATION_H */
524 * Re-enable new client connections if we are going back under the
528 if (cupsArrayCount(Clients
) == MaxClients
)
529 cupsdResumeListening();
532 * Compact the list of clients as necessary...
535 cupsArrayRemove(Clients
, con
);
545 * 'cupsdReadClient()' - Read data from a client.
549 cupsdReadClient(cupsd_client_t
*con
) /* I - Client to read from */
551 char line
[32768], /* Line from client... */
552 locale
[64], /* Locale */
553 *ptr
; /* Pointer into strings */
554 http_status_t status
; /* Transfer status */
555 ipp_state_t ipp_state
; /* State of IPP transfer */
556 int bytes
; /* Number of bytes to POST */
557 char *filename
; /* Name of file for GET/HEAD */
558 char buf
[1024]; /* Buffer for real filename */
559 struct stat filestats
; /* File information */
560 mime_type_t
*type
; /* MIME type of file */
561 cupsd_printer_t
*p
; /* Printer */
562 static unsigned request_id
= 0; /* Request ID for temp files */
565 status
= HTTP_STATUS_CONTINUE
;
567 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
);
569 if (httpGetState(con
->http
) == HTTP_STATE_GET_SEND
||
570 httpGetState(con
->http
) == HTTP_STATE_POST_SEND
||
571 httpGetState(con
->http
) == HTTP_STATE_STATUS
)
574 * If we get called in the wrong state, then something went wrong with the
575 * connection and we need to shut it down...
578 if (!httpGetReady(con
->http
) && recv(httpGetFd(con
->http
), buf
, 1, MSG_PEEK
) < 1)
581 * Connection closed...
584 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing on EOF.");
585 cupsdCloseClient(con
);
589 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing on unexpected HTTP read state %s.", httpStateString(httpGetState(con
->http
)));
590 cupsdCloseClient(con
);
598 * Automatically check for a SSL/TLS handshake...
603 if (recv(httpGetFd(con
->http
), buf
, 1, MSG_PEEK
) == 1 &&
604 (!buf
[0] || !strchr("DGHOPT", buf
[0])))
607 * Encrypt this connection...
610 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "Saw first byte %02X, auto-negotiating SSL/TLS session.", buf
[0] & 255);
612 if (cupsd_start_tls(con
, HTTP_ENCRYPTION_ALWAYS
))
613 cupsdCloseClient(con
);
618 #endif /* HAVE_SSL */
620 switch (httpGetState(con
->http
))
622 case HTTP_STATE_WAITING
:
624 * See if we've received a request line...
627 con
->operation
= httpReadRequest(con
->http
, con
->uri
, sizeof(con
->uri
));
628 if (con
->operation
== HTTP_STATE_ERROR
||
629 con
->operation
== HTTP_STATE_UNKNOWN_METHOD
||
630 con
->operation
== HTTP_STATE_UNKNOWN_VERSION
)
632 if (httpError(con
->http
))
633 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
634 "HTTP_STATE_WAITING Closing for error %d (%s)",
635 httpError(con
->http
), strerror(httpError(con
->http
)));
637 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
638 "HTTP_STATE_WAITING Closing on error: %s",
639 cupsLastErrorString());
641 cupsdCloseClient(con
);
646 * Ignore blank request lines...
649 if (con
->operation
== HTTP_STATE_WAITING
)
653 * Clear other state variables...
660 con
->username
[0] = '\0';
661 con
->password
[0] = '\0';
663 cupsdClearString(&con
->command
);
664 cupsdClearString(&con
->options
);
665 cupsdClearString(&con
->query_string
);
669 ippDelete(con
->request
);
675 ippDelete(con
->response
);
676 con
->response
= NULL
;
681 cupsLangFree(con
->language
);
682 con
->language
= NULL
;
688 #endif /* HAVE_GSSAPI */
691 * Handle full URLs in the request line...
694 if (strcmp(con
->uri
, "*"))
696 char scheme
[HTTP_MAX_URI
], /* Method/scheme */
697 userpass
[HTTP_MAX_URI
], /* Username:password */
698 hostname
[HTTP_MAX_URI
], /* Hostname */
699 resource
[HTTP_MAX_URI
]; /* Resource path */
700 int port
; /* Port number */
703 * Separate the URI into its components...
706 if (httpSeparateURI(HTTP_URI_CODING_MOST
, con
->uri
,
707 scheme
, sizeof(scheme
),
708 userpass
, sizeof(userpass
),
709 hostname
, sizeof(hostname
), &port
,
710 resource
, sizeof(resource
)) < HTTP_URI_STATUS_OK
)
712 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Bad URI \"%s\" in request.",
714 cupsdSendError(con
, HTTP_STATUS_METHOD_NOT_ALLOWED
, CUPSD_AUTH_NONE
);
715 cupsdCloseClient(con
);
720 * Only allow URIs with the servername, localhost, or an IP
724 if (strcmp(scheme
, "file") &&
725 _cups_strcasecmp(hostname
, ServerName
) &&
726 _cups_strcasecmp(hostname
, "localhost") &&
727 !cupsArrayFind(ServerAlias
, hostname
) &&
728 !isdigit(hostname
[0]) && hostname
[0] != '[')
731 * Nope, we don't do proxies...
734 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Bad URI \"%s\" in request.",
736 cupsdSendError(con
, HTTP_STATUS_METHOD_NOT_ALLOWED
, CUPSD_AUTH_NONE
);
737 cupsdCloseClient(con
);
742 * Copy the resource portion back into the URI; both resource and
743 * con->uri are HTTP_MAX_URI bytes in size...
746 strlcpy(con
->uri
, resource
, sizeof(con
->uri
));
750 * Process the request...
753 gettimeofday(&(con
->start
), NULL
);
755 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "%s %s HTTP/%d.%d",
756 httpStateString(con
->operation
) + 11, con
->uri
,
757 httpGetVersion(con
->http
) / 100,
758 httpGetVersion(con
->http
) % 100);
760 if (!cupsArrayFind(ActiveClients
, con
))
762 cupsArrayAdd(ActiveClients
, con
);
766 case HTTP_STATE_OPTIONS
:
767 case HTTP_STATE_DELETE
:
768 case HTTP_STATE_GET
:
769 case HTTP_STATE_HEAD
:
770 case HTTP_STATE_POST
:
771 case HTTP_STATE_PUT
:
772 case HTTP_STATE_TRACE
:
774 * Parse incoming parameters until the status changes...
777 while ((status
= httpUpdate(con
->http
)) == HTTP_STATUS_CONTINUE
)
778 if (!httpGetReady(con
->http
))
781 if (status
!= HTTP_STATUS_OK
&& status
!= HTTP_STATUS_CONTINUE
)
783 if (httpError(con
->http
) && httpError(con
->http
) != EPIPE
)
784 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
785 "Closing for error %d (%s) while reading headers.",
786 httpError(con
->http
), strerror(httpError(con
->http
)));
788 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
789 "Closing on EOF while reading headers.");
791 cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
);
792 cupsdCloseClient(con
);
798 if (!httpGetReady(con
->http
) && recv(httpGetFd(con
->http
), buf
, 1, MSG_PEEK
) < 1)
801 * Connection closed...
804 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing on EOF.");
805 cupsdCloseClient(con
);
808 break; /* Anti-compiler-warning-code */
812 * Handle new transfers...
815 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Read: status=%d", status
);
817 if (status
== HTTP_STATUS_OK
)
819 if (httpGetField(con
->http
, HTTP_FIELD_ACCEPT_LANGUAGE
)[0])
822 * Figure out the locale from the Accept-Language and Content-Type
826 if ((ptr
= strchr(httpGetField(con
->http
, HTTP_FIELD_ACCEPT_LANGUAGE
),
830 if ((ptr
= strchr(httpGetField(con
->http
, HTTP_FIELD_ACCEPT_LANGUAGE
),
834 if ((ptr
= strstr(httpGetField(con
->http
, HTTP_FIELD_CONTENT_TYPE
),
835 "charset=")) != NULL
)
838 * Combine language and charset, and trim any extra params in the
842 snprintf(locale
, sizeof(locale
), "%s.%s",
843 httpGetField(con
->http
, HTTP_FIELD_ACCEPT_LANGUAGE
), ptr
+ 8);
845 if ((ptr
= strchr(locale
, ',')) != NULL
)
849 snprintf(locale
, sizeof(locale
), "%s.UTF-8",
850 httpGetField(con
->http
, HTTP_FIELD_ACCEPT_LANGUAGE
));
852 con
->language
= cupsLangGet(locale
);
855 con
->language
= cupsLangGet(DefaultLocale
);
859 if (!_cups_strncasecmp(httpGetField(con
->http
, HTTP_FIELD_CONNECTION
),
860 "Keep-Alive", 10) && KeepAlive
)
861 httpSetKeepAlive(con
->http
, HTTP_KEEPALIVE_ON
);
862 else if (!_cups_strncasecmp(httpGetField(con
->http
, HTTP_FIELD_CONNECTION
),
864 httpSetKeepAlive(con
->http
, HTTP_KEEPALIVE_OFF
);
866 if (!httpGetField(con
->http
, HTTP_FIELD_HOST
)[0] &&
867 httpGetVersion(con
->http
) >= HTTP_VERSION_1_1
)
870 * HTTP/1.1 and higher require the "Host:" field...
873 if (!cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
))
875 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Missing Host: field in request.");
876 cupsdCloseClient(con
);
880 else if (!valid_host(con
))
883 * Access to localhost must use "localhost" or the corresponding IPv4
884 * or IPv6 values in the Host: field.
887 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
888 "Request from \"%s\" using invalid Host: field \"%s\".",
889 httpGetHostname(con
->http
, NULL
, 0), httpGetField(con
->http
, HTTP_FIELD_HOST
));
891 if (!cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
))
893 cupsdCloseClient(con
);
897 else if (con
->operation
== HTTP_STATE_OPTIONS
)
900 * Do OPTIONS command...
903 if (con
->best
&& con
->best
->type
!= CUPSD_AUTH_NONE
)
905 httpClearFields(con
->http
);
907 if (!cupsdSendHeader(con
, HTTP_STATUS_UNAUTHORIZED
, NULL
, CUPSD_AUTH_NONE
))
909 cupsdCloseClient(con
);
914 if (!_cups_strcasecmp(httpGetField(con
->http
, HTTP_FIELD_CONNECTION
), "Upgrade") && strstr(httpGetField(con
->http
, HTTP_FIELD_UPGRADE
), "TLS/") != NULL
&& !httpIsEncrypted(con
->http
))
918 * Do encryption stuff...
921 httpClearFields(con
->http
);
923 if (!cupsdSendHeader(con
, HTTP_STATUS_SWITCHING_PROTOCOLS
, NULL
, CUPSD_AUTH_NONE
))
925 cupsdCloseClient(con
);
929 if (cupsd_start_tls(con
, HTTP_ENCRYPTION_REQUIRED
))
931 cupsdCloseClient(con
);
935 if (!cupsdSendError(con
, HTTP_STATUS_NOT_IMPLEMENTED
, CUPSD_AUTH_NONE
))
937 cupsdCloseClient(con
);
940 #endif /* HAVE_SSL */
943 httpClearFields(con
->http
);
944 httpSetField(con
->http
, HTTP_FIELD_ALLOW
,
945 "GET, HEAD, OPTIONS, POST, PUT");
946 httpSetField(con
->http
, HTTP_FIELD_CONTENT_LENGTH
, "0");
948 if (!cupsdSendHeader(con
, HTTP_STATUS_OK
, NULL
, CUPSD_AUTH_NONE
))
950 cupsdCloseClient(con
);
954 else if (!is_path_absolute(con
->uri
))
957 * Protect against malicious users!
960 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
961 "Request for non-absolute resource \"%s\".", con
->uri
);
963 if (!cupsdSendError(con
, HTTP_STATUS_FORBIDDEN
, CUPSD_AUTH_NONE
))
965 cupsdCloseClient(con
);
971 if (!_cups_strcasecmp(httpGetField(con
->http
, HTTP_FIELD_CONNECTION
),
972 "Upgrade") && !httpIsEncrypted(con
->http
))
976 * Do encryption stuff...
979 httpClearFields(con
->http
);
981 if (!cupsdSendHeader(con
, HTTP_STATUS_SWITCHING_PROTOCOLS
, NULL
,
984 cupsdCloseClient(con
);
988 if (cupsd_start_tls(con
, HTTP_ENCRYPTION_REQUIRED
))
990 cupsdCloseClient(con
);
994 if (!cupsdSendError(con
, HTTP_STATUS_NOT_IMPLEMENTED
, CUPSD_AUTH_NONE
))
996 cupsdCloseClient(con
);
999 #endif /* HAVE_SSL */
1002 if ((status
= cupsdIsAuthorized(con
, NULL
)) != HTTP_STATUS_OK
)
1004 cupsdSendError(con
, status
, CUPSD_AUTH_NONE
);
1005 cupsdCloseClient(con
);
1009 if (httpGetExpect(con
->http
) &&
1010 (con
->operation
== HTTP_STATE_POST
|| con
->operation
== HTTP_STATE_PUT
))
1012 if (httpGetExpect(con
->http
) == HTTP_STATUS_CONTINUE
)
1015 * Send 100-continue header...
1018 if (httpWriteResponse(con
->http
, HTTP_STATUS_CONTINUE
))
1020 cupsdCloseClient(con
);
1027 * Send 417-expectation-failed header...
1030 httpClearFields(con
->http
);
1031 httpSetField(con
->http
, HTTP_FIELD_CONTENT_LENGTH
, "0");
1033 cupsdSendError(con
, HTTP_STATUS_EXPECTATION_FAILED
, CUPSD_AUTH_NONE
);
1034 cupsdCloseClient(con
);
1039 switch (httpGetState(con
->http
))
1041 case HTTP_STATE_GET_SEND
:
1042 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Processing GET %s", con
->uri
);
1044 if ((!strncmp(con
->uri
, "/ppd/", 5) ||
1045 !strncmp(con
->uri
, "/printers/", 10) ||
1046 !strncmp(con
->uri
, "/classes/", 9)) &&
1047 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".ppd"))
1050 * Send PPD file - get the real printer name since printer
1051 * names are not case sensitive but filenames can be...
1054 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".ppd" */
1056 if (!strncmp(con
->uri
, "/ppd/", 5))
1057 p
= cupsdFindPrinter(con
->uri
+ 5);
1058 else if (!strncmp(con
->uri
, "/printers/", 10))
1059 p
= cupsdFindPrinter(con
->uri
+ 10);
1062 p
= cupsdFindClass(con
->uri
+ 9);
1066 int i
; /* Looping var */
1068 for (i
= 0; i
< p
->num_printers
; i
++)
1070 if (!(p
->printers
[i
]->type
& CUPS_PRINTER_CLASS
))
1072 char ppdname
[1024];/* PPD filename */
1074 snprintf(ppdname
, sizeof(ppdname
), "%s/ppd/%s.ppd",
1075 ServerRoot
, p
->printers
[i
]->name
);
1076 if (!access(ppdname
, 0))
1084 if (i
>= p
->num_printers
)
1091 snprintf(con
->uri
, sizeof(con
->uri
), "/ppd/%s.ppd", p
->name
);
1095 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1097 cupsdCloseClient(con
);
1104 else if ((!strncmp(con
->uri
, "/icons/", 7) ||
1105 !strncmp(con
->uri
, "/printers/", 10) ||
1106 !strncmp(con
->uri
, "/classes/", 9)) &&
1107 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".png"))
1110 * Send icon file - get the real queue name since queue names are
1111 * not case sensitive but filenames can be...
1114 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".png" */
1116 if (!strncmp(con
->uri
, "/icons/", 7))
1117 p
= cupsdFindPrinter(con
->uri
+ 7);
1118 else if (!strncmp(con
->uri
, "/printers/", 10))
1119 p
= cupsdFindPrinter(con
->uri
+ 10);
1122 p
= cupsdFindClass(con
->uri
+ 9);
1126 int i
; /* Looping var */
1128 for (i
= 0; i
< p
->num_printers
; i
++)
1130 if (!(p
->printers
[i
]->type
& CUPS_PRINTER_CLASS
))
1132 char ppdname
[1024];/* PPD filename */
1134 snprintf(ppdname
, sizeof(ppdname
), "%s/ppd/%s.ppd",
1135 ServerRoot
, p
->printers
[i
]->name
);
1136 if (!access(ppdname
, 0))
1144 if (i
>= p
->num_printers
)
1150 snprintf(con
->uri
, sizeof(con
->uri
), "/icons/%s.png", p
->name
);
1153 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1155 cupsdCloseClient(con
);
1163 if ((!strncmp(con
->uri
, "/admin", 6) && strcmp(con
->uri
, "/admin/conf/cupsd.conf") && strncmp(con
->uri
, "/admin/log/", 11)) ||
1164 !strncmp(con
->uri
, "/printers", 9) ||
1165 !strncmp(con
->uri
, "/classes", 8) ||
1166 !strncmp(con
->uri
, "/help", 5) ||
1167 !strncmp(con
->uri
, "/jobs", 5))
1172 * Web interface is disabled. Show an appropriate message...
1175 if (!cupsdSendError(con
, HTTP_STATUS_CUPS_WEBIF_DISABLED
, CUPSD_AUTH_NONE
))
1177 cupsdCloseClient(con
);
1185 * Send CGI output...
1188 if (!strncmp(con
->uri
, "/admin", 6))
1190 cupsdSetStringf(&con
->command
, "%s/cgi-bin/admin.cgi",
1193 cupsdSetString(&con
->options
, strchr(con
->uri
+ 6, '?'));
1195 else if (!strncmp(con
->uri
, "/printers", 9))
1197 cupsdSetStringf(&con
->command
, "%s/cgi-bin/printers.cgi",
1200 if (con
->uri
[9] && con
->uri
[10])
1201 cupsdSetString(&con
->options
, con
->uri
+ 9);
1203 cupsdSetString(&con
->options
, NULL
);
1205 else if (!strncmp(con
->uri
, "/classes", 8))
1207 cupsdSetStringf(&con
->command
, "%s/cgi-bin/classes.cgi",
1210 if (con
->uri
[8] && con
->uri
[9])
1211 cupsdSetString(&con
->options
, con
->uri
+ 8);
1213 cupsdSetString(&con
->options
, NULL
);
1215 else if (!strncmp(con
->uri
, "/jobs", 5))
1217 cupsdSetStringf(&con
->command
, "%s/cgi-bin/jobs.cgi",
1220 if (con
->uri
[5] && con
->uri
[6])
1221 cupsdSetString(&con
->options
, con
->uri
+ 5);
1223 cupsdSetString(&con
->options
, NULL
);
1227 cupsdSetStringf(&con
->command
, "%s/cgi-bin/help.cgi",
1230 if (con
->uri
[5] && con
->uri
[6])
1231 cupsdSetString(&con
->options
, con
->uri
+ 5);
1233 cupsdSetString(&con
->options
, NULL
);
1236 if (!cupsdSendCommand(con
, con
->command
, con
->options
, 0))
1238 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1240 cupsdCloseClient(con
);
1245 cupsdLogRequest(con
, HTTP_STATUS_OK
);
1247 if (httpGetVersion(con
->http
) <= HTTP_VERSION_1_0
)
1248 httpSetKeepAlive(con
->http
, HTTP_KEEPALIVE_OFF
);
1250 else if (!strncmp(con
->uri
, "/admin/log/", 11) && (strchr(con
->uri
+ 11, '/') || strlen(con
->uri
) == 11))
1253 * GET can only be done to configuration files directly under
1257 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Request for subdirectory \"%s\".", con
->uri
);
1259 if (!cupsdSendError(con
, HTTP_STATUS_FORBIDDEN
, CUPSD_AUTH_NONE
))
1261 cupsdCloseClient(con
);
1273 if ((filename
= get_file(con
, &filestats
, buf
,
1274 sizeof(buf
))) == NULL
)
1276 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1278 cupsdCloseClient(con
);
1285 type
= mimeFileType(MimeDatabase
, filename
, NULL
, NULL
);
1287 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "filename=\"%s\", type=%s/%s", filename
, type
? type
->super
: "", type
? type
->type
: "");
1289 if (is_cgi(con
, filename
, &filestats
, type
))
1292 * Note: con->command and con->options were set by
1296 if (!cupsdSendCommand(con
, con
->command
, con
->options
, 0))
1298 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1300 cupsdCloseClient(con
);
1305 cupsdLogRequest(con
, HTTP_STATUS_OK
);
1307 if (httpGetVersion(con
->http
) <= HTTP_VERSION_1_0
)
1308 httpSetKeepAlive(con
->http
, HTTP_KEEPALIVE_OFF
);
1312 if (!check_if_modified(con
, &filestats
))
1314 if (!cupsdSendError(con
, HTTP_STATUS_NOT_MODIFIED
, CUPSD_AUTH_NONE
))
1316 cupsdCloseClient(con
);
1323 strlcpy(line
, "text/plain", sizeof(line
));
1325 snprintf(line
, sizeof(line
), "%s/%s", type
->super
, type
->type
);
1327 if (!write_file(con
, HTTP_STATUS_OK
, filename
, line
, &filestats
))
1329 cupsdCloseClient(con
);
1336 case HTTP_STATE_POST_RECV
:
1338 * See if the POST request includes a Content-Length field, and if
1339 * so check the length against any limits that are set...
1342 if (httpGetField(con
->http
, HTTP_FIELD_CONTENT_LENGTH
)[0] &&
1343 MaxRequestSize
> 0 &&
1344 httpGetLength2(con
->http
) > MaxRequestSize
)
1347 * Request too large...
1350 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1352 cupsdCloseClient(con
);
1358 else if (httpGetLength2(con
->http
) < 0)
1361 * Negative content lengths are invalid!
1364 if (!cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
))
1366 cupsdCloseClient(con
);
1374 * See what kind of POST request this is; for IPP requests the
1375 * content-type field will be "application/ipp"...
1378 if (!strcmp(httpGetField(con
->http
, HTTP_FIELD_CONTENT_TYPE
),
1380 con
->request
= ippNew();
1381 else if (!WebInterface
)
1384 * Web interface is disabled. Show an appropriate message...
1387 if (!cupsdSendError(con
, HTTP_STATUS_CUPS_WEBIF_DISABLED
, CUPSD_AUTH_NONE
))
1389 cupsdCloseClient(con
);
1395 else if ((!strncmp(con
->uri
, "/admin", 6) && strncmp(con
->uri
, "/admin/log/", 11)) ||
1396 !strncmp(con
->uri
, "/printers", 9) ||
1397 !strncmp(con
->uri
, "/classes", 8) ||
1398 !strncmp(con
->uri
, "/help", 5) ||
1399 !strncmp(con
->uri
, "/jobs", 5))
1405 if (!strncmp(con
->uri
, "/admin", 6))
1407 cupsdSetStringf(&con
->command
, "%s/cgi-bin/admin.cgi",
1410 cupsdSetString(&con
->options
, strchr(con
->uri
+ 6, '?'));
1412 else if (!strncmp(con
->uri
, "/printers", 9))
1414 cupsdSetStringf(&con
->command
, "%s/cgi-bin/printers.cgi",
1417 if (con
->uri
[9] && con
->uri
[10])
1418 cupsdSetString(&con
->options
, con
->uri
+ 9);
1420 cupsdSetString(&con
->options
, NULL
);
1422 else if (!strncmp(con
->uri
, "/classes", 8))
1424 cupsdSetStringf(&con
->command
, "%s/cgi-bin/classes.cgi",
1427 if (con
->uri
[8] && con
->uri
[9])
1428 cupsdSetString(&con
->options
, con
->uri
+ 8);
1430 cupsdSetString(&con
->options
, NULL
);
1432 else if (!strncmp(con
->uri
, "/jobs", 5))
1434 cupsdSetStringf(&con
->command
, "%s/cgi-bin/jobs.cgi",
1437 if (con
->uri
[5] && con
->uri
[6])
1438 cupsdSetString(&con
->options
, con
->uri
+ 5);
1440 cupsdSetString(&con
->options
, NULL
);
1444 cupsdSetStringf(&con
->command
, "%s/cgi-bin/help.cgi",
1447 if (con
->uri
[5] && con
->uri
[6])
1448 cupsdSetString(&con
->options
, con
->uri
+ 5);
1450 cupsdSetString(&con
->options
, NULL
);
1453 if (httpGetVersion(con
->http
) <= HTTP_VERSION_1_0
)
1454 httpSetKeepAlive(con
->http
, HTTP_KEEPALIVE_OFF
);
1462 if ((filename
= get_file(con
, &filestats
, buf
,
1463 sizeof(buf
))) == NULL
)
1465 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1467 cupsdCloseClient(con
);
1474 type
= mimeFileType(MimeDatabase
, filename
, NULL
, NULL
);
1476 if (!is_cgi(con
, filename
, &filestats
, type
))
1479 * Only POST to CGI's...
1482 if (!cupsdSendError(con
, HTTP_STATUS_UNAUTHORIZED
, CUPSD_AUTH_NONE
))
1484 cupsdCloseClient(con
);
1491 case HTTP_STATE_PUT_RECV
:
1493 * Validate the resource name...
1496 if (strcmp(con
->uri
, "/admin/conf/cupsd.conf"))
1499 * PUT can only be done to the cupsd.conf file...
1502 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
1503 "Disallowed PUT request for \"%s\".", con
->uri
);
1505 if (!cupsdSendError(con
, HTTP_STATUS_FORBIDDEN
, CUPSD_AUTH_NONE
))
1507 cupsdCloseClient(con
);
1515 * See if the PUT request includes a Content-Length field, and if
1516 * so check the length against any limits that are set...
1519 if (httpGetField(con
->http
, HTTP_FIELD_CONTENT_LENGTH
)[0] &&
1520 MaxRequestSize
> 0 &&
1521 httpGetLength2(con
->http
) > MaxRequestSize
)
1524 * Request too large...
1527 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1529 cupsdCloseClient(con
);
1535 else if (httpGetLength2(con
->http
) < 0)
1538 * Negative content lengths are invalid!
1541 if (!cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
))
1543 cupsdCloseClient(con
);
1551 * Open a temporary file to hold the request...
1554 cupsdSetStringf(&con
->filename
, "%s/%08x", RequestRoot
,
1556 con
->file
= open(con
->filename
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0640);
1560 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
1561 "Unable to create request file \"%s\": %s",
1562 con
->filename
, strerror(errno
));
1564 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1566 cupsdCloseClient(con
);
1571 fchmod(con
->file
, 0640);
1572 fchown(con
->file
, RunUser
, Group
);
1573 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
1576 case HTTP_STATE_DELETE
:
1577 case HTTP_STATE_TRACE
:
1578 cupsdSendError(con
, HTTP_STATUS_NOT_IMPLEMENTED
, CUPSD_AUTH_NONE
);
1579 cupsdCloseClient(con
);
1582 case HTTP_STATE_HEAD
:
1583 if (!strncmp(con
->uri
, "/printers/", 10) &&
1584 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".ppd"))
1587 * Send PPD file - get the real printer name since printer
1588 * names are not case sensitive but filenames can be...
1591 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".ppd" */
1593 if ((p
= cupsdFindPrinter(con
->uri
+ 10)) != NULL
)
1594 snprintf(con
->uri
, sizeof(con
->uri
), "/ppd/%s.ppd", p
->name
);
1597 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1599 cupsdCloseClient(con
);
1603 cupsdLogRequest(con
, HTTP_STATUS_NOT_FOUND
);
1607 else if (!strncmp(con
->uri
, "/printers/", 10) &&
1608 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".png"))
1611 * Send PNG file - get the real printer name since printer
1612 * names are not case sensitive but filenames can be...
1615 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".ppd" */
1617 if ((p
= cupsdFindPrinter(con
->uri
+ 10)) != NULL
)
1618 snprintf(con
->uri
, sizeof(con
->uri
), "/icons/%s.png", p
->name
);
1621 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
1623 cupsdCloseClient(con
);
1627 cupsdLogRequest(con
, HTTP_STATUS_NOT_FOUND
);
1631 else if (!WebInterface
)
1633 httpClearFields(con
->http
);
1635 if (!cupsdSendHeader(con
, HTTP_STATUS_OK
, NULL
, CUPSD_AUTH_NONE
))
1637 cupsdCloseClient(con
);
1641 cupsdLogRequest(con
, HTTP_STATUS_OK
);
1645 if ((!strncmp(con
->uri
, "/admin", 6) && strcmp(con
->uri
, "/admin/conf/cupsd.conf") && strncmp(con
->uri
, "/admin/log/", 11)) ||
1646 !strncmp(con
->uri
, "/printers", 9) ||
1647 !strncmp(con
->uri
, "/classes", 8) ||
1648 !strncmp(con
->uri
, "/help", 5) ||
1649 !strncmp(con
->uri
, "/jobs", 5))
1655 httpClearFields(con
->http
);
1657 if (!cupsdSendHeader(con
, HTTP_STATUS_OK
, "text/html", CUPSD_AUTH_NONE
))
1659 cupsdCloseClient(con
);
1663 cupsdLogRequest(con
, HTTP_STATUS_OK
);
1665 else if (!strncmp(con
->uri
, "/admin/log/", 11) && (strchr(con
->uri
+ 11, '/') || strlen(con
->uri
) == 11))
1668 * HEAD can only be done to configuration files under
1672 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
1673 "Request for subdirectory \"%s\".", con
->uri
);
1675 if (!cupsdSendError(con
, HTTP_STATUS_FORBIDDEN
, CUPSD_AUTH_NONE
))
1677 cupsdCloseClient(con
);
1681 cupsdLogRequest(con
, HTTP_STATUS_FORBIDDEN
);
1684 else if ((filename
= get_file(con
, &filestats
, buf
,
1685 sizeof(buf
))) == NULL
)
1687 httpClearFields(con
->http
);
1689 if (!cupsdSendHeader(con
, HTTP_STATUS_NOT_FOUND
, "text/html",
1692 cupsdCloseClient(con
);
1696 cupsdLogRequest(con
, HTTP_STATUS_NOT_FOUND
);
1698 else if (!check_if_modified(con
, &filestats
))
1700 if (!cupsdSendError(con
, HTTP_STATUS_NOT_MODIFIED
, CUPSD_AUTH_NONE
))
1702 cupsdCloseClient(con
);
1706 cupsdLogRequest(con
, HTTP_STATUS_NOT_MODIFIED
);
1714 type
= mimeFileType(MimeDatabase
, filename
, NULL
, NULL
);
1716 strlcpy(line
, "text/plain", sizeof(line
));
1718 snprintf(line
, sizeof(line
), "%s/%s", type
->super
, type
->type
);
1720 httpClearFields(con
->http
);
1722 httpSetField(con
->http
, HTTP_FIELD_LAST_MODIFIED
,
1723 httpGetDateString(filestats
.st_mtime
));
1724 httpSetLength(con
->http
, (size_t)filestats
.st_size
);
1726 if (!cupsdSendHeader(con
, HTTP_STATUS_OK
, line
, CUPSD_AUTH_NONE
))
1728 cupsdCloseClient(con
);
1732 cupsdLogRequest(con
, HTTP_STATUS_OK
);
1737 break; /* Anti-compiler-warning-code */
1743 * Handle any incoming data...
1746 switch (httpGetState(con
->http
))
1748 case HTTP_STATE_PUT_RECV
:
1751 if ((bytes
= httpRead2(con
->http
, line
, sizeof(line
))) < 0)
1753 if (httpError(con
->http
) && httpError(con
->http
) != EPIPE
)
1754 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
1755 "HTTP_STATE_PUT_RECV Closing for error %d (%s)",
1756 httpError(con
->http
), strerror(httpError(con
->http
)));
1758 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
1759 "HTTP_STATE_PUT_RECV Closing on EOF.");
1761 cupsdCloseClient(con
);
1766 con
->bytes
+= bytes
;
1768 if (MaxRequestSize
> 0 && con
->bytes
> MaxRequestSize
)
1772 unlink(con
->filename
);
1773 cupsdClearString(&con
->filename
);
1775 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1777 cupsdCloseClient(con
);
1782 if (write(con
->file
, line
, (size_t)bytes
) < bytes
)
1784 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
1785 "Unable to write %d bytes to \"%s\": %s", bytes
,
1786 con
->filename
, strerror(errno
));
1790 unlink(con
->filename
);
1791 cupsdClearString(&con
->filename
);
1793 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1795 cupsdCloseClient(con
);
1800 else if (httpGetState(con
->http
) == HTTP_STATE_PUT_RECV
)
1802 cupsdCloseClient(con
);
1806 while (httpGetState(con
->http
) == HTTP_STATE_PUT_RECV
&& httpGetReady(con
->http
));
1808 if (httpGetState(con
->http
) == HTTP_STATE_STATUS
)
1811 * End of file, see how big it is...
1814 fstat(con
->file
, &filestats
);
1819 if (filestats
.st_size
> MaxRequestSize
&&
1823 * Request is too big; remove it and send an error...
1826 unlink(con
->filename
);
1827 cupsdClearString(&con
->filename
);
1829 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1831 cupsdCloseClient(con
);
1837 * Install the configuration file...
1840 status
= install_cupsd_conf(con
);
1843 * Return the status to the client...
1846 if (!cupsdSendError(con
, status
, CUPSD_AUTH_NONE
))
1848 cupsdCloseClient(con
);
1854 case HTTP_STATE_POST_RECV
:
1857 if (con
->request
&& con
->file
< 0)
1860 * Grab any request data from the connection...
1863 if (!httpWait(con
->http
, 0))
1866 if ((ipp_state
= ippRead(con
->http
, con
->request
)) == IPP_STATE_ERROR
)
1868 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "IPP read error: %s",
1869 cupsLastErrorString());
1871 cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
);
1872 cupsdCloseClient(con
);
1875 else if (ipp_state
!= IPP_STATE_DATA
)
1877 if (httpGetState(con
->http
) == HTTP_STATE_POST_SEND
)
1879 cupsdSendError(con
, HTTP_STATUS_BAD_REQUEST
, CUPSD_AUTH_NONE
);
1880 cupsdCloseClient(con
);
1884 if (httpGetReady(con
->http
))
1890 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "%d.%d %s %d",
1891 con
->request
->request
.op
.version
[0],
1892 con
->request
->request
.op
.version
[1],
1893 ippOpString(con
->request
->request
.op
.operation_id
),
1894 con
->request
->request
.op
.request_id
);
1895 con
->bytes
+= (off_t
)ippLength(con
->request
);
1899 if (con
->file
< 0 && httpGetState(con
->http
) != HTTP_STATE_POST_SEND
)
1902 * Create a file as needed for the request data...
1905 cupsdSetStringf(&con
->filename
, "%s/%08x", RequestRoot
,
1907 con
->file
= open(con
->filename
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0640);
1911 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
1912 "Unable to create request file \"%s\": %s",
1913 con
->filename
, strerror(errno
));
1915 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1917 cupsdCloseClient(con
);
1922 fchmod(con
->file
, 0640);
1923 fchown(con
->file
, RunUser
, Group
);
1924 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
1927 if (httpGetState(con
->http
) != HTTP_STATE_POST_SEND
)
1929 if (!httpWait(con
->http
, 0))
1931 else if ((bytes
= httpRead2(con
->http
, line
, sizeof(line
))) < 0)
1933 if (httpError(con
->http
) && httpError(con
->http
) != EPIPE
)
1934 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
1935 "HTTP_STATE_POST_SEND Closing for error %d (%s)",
1936 httpError(con
->http
), strerror(httpError(con
->http
)));
1938 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
1939 "HTTP_STATE_POST_SEND Closing on EOF.");
1941 cupsdCloseClient(con
);
1946 con
->bytes
+= bytes
;
1948 if (MaxRequestSize
> 0 && con
->bytes
> MaxRequestSize
)
1952 unlink(con
->filename
);
1953 cupsdClearString(&con
->filename
);
1955 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1957 cupsdCloseClient(con
);
1962 if (write(con
->file
, line
, (size_t)bytes
) < bytes
)
1964 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
1965 "Unable to write %d bytes to \"%s\": %s",
1966 bytes
, con
->filename
, strerror(errno
));
1970 unlink(con
->filename
);
1971 cupsdClearString(&con
->filename
);
1973 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
,
1976 cupsdCloseClient(con
);
1981 else if (httpGetState(con
->http
) == HTTP_STATE_POST_RECV
)
1983 else if (httpGetState(con
->http
) != HTTP_STATE_POST_SEND
)
1985 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
1986 "Closing on unexpected state %s.",
1987 httpStateString(httpGetState(con
->http
)));
1988 cupsdCloseClient(con
);
1993 while (httpGetState(con
->http
) == HTTP_STATE_POST_RECV
&& httpGetReady(con
->http
));
1995 if (httpGetState(con
->http
) == HTTP_STATE_POST_SEND
)
1999 fstat(con
->file
, &filestats
);
2004 if (filestats
.st_size
> MaxRequestSize
&&
2008 * Request is too big; remove it and send an error...
2011 unlink(con
->filename
);
2012 cupsdClearString(&con
->filename
);
2017 * Delete any IPP request data...
2020 ippDelete(con
->request
);
2021 con
->request
= NULL
;
2024 if (!cupsdSendError(con
, HTTP_STATUS_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
2026 cupsdCloseClient(con
);
2030 else if (filestats
.st_size
== 0)
2033 * Don't allow empty file...
2036 unlink(con
->filename
);
2037 cupsdClearString(&con
->filename
);
2042 if (!cupsdSendCommand(con
, con
->command
, con
->options
, 0))
2044 if (!cupsdSendError(con
, HTTP_STATUS_NOT_FOUND
, CUPSD_AUTH_NONE
))
2046 cupsdCloseClient(con
);
2051 cupsdLogRequest(con
, HTTP_STATUS_OK
);
2057 cupsdProcessIPPRequest(con
);
2061 unlink(con
->filename
);
2062 cupsdClearString(&con
->filename
);
2071 break; /* Anti-compiler-warning-code */
2074 if (httpGetState(con
->http
) == HTTP_STATE_WAITING
)
2076 if (!httpGetKeepAlive(con
->http
))
2078 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
2079 "Closing because Keep-Alive is disabled.");
2080 cupsdCloseClient(con
);
2084 cupsArrayRemove(ActiveClients
, con
);
2085 cupsdSetBusyState();
2092 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2095 int /* O - 1 on success, 0 on failure */
2097 cupsd_client_t
*con
, /* I - Client connection */
2098 char *command
, /* I - Command to run */
2099 char *options
, /* I - Command-line options */
2100 int root
) /* I - Run as root? */
2102 int fd
; /* Standard input file descriptor */
2107 fd
= open(con
->filename
, O_RDONLY
);
2111 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
2112 "Unable to open \"%s\" for reading: %s",
2113 con
->filename
? con
->filename
: "/dev/null",
2118 fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
);
2123 con
->pipe_pid
= pipe_command(con
, fd
, &(con
->file
), command
, options
, root
);
2124 con
->pipe_status
= HTTP_STATUS_OK
;
2126 httpClearFields(con
->http
);
2131 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Started \"%s\" (pid=%d, file=%d)",
2132 command
, con
->pipe_pid
, con
->file
);
2134 if (con
->pipe_pid
== 0)
2137 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
2139 cupsdAddSelect(con
->file
, (cupsd_selfunc_t
)write_pipe
, NULL
, con
);
2141 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Waiting for CGI data.");
2143 con
->sent_header
= 0;
2144 con
->file_ready
= 0;
2145 con
->got_fields
= 0;
2146 con
->header_used
= 0;
2153 * 'cupsdSendError()' - Send an error message via HTTP.
2156 int /* O - 1 if successful, 0 otherwise */
2157 cupsdSendError(cupsd_client_t
*con
, /* I - Connection */
2158 http_status_t code
, /* I - Error code */
2159 int auth_type
)/* I - Authentication type */
2161 char location
[HTTP_MAX_VALUE
]; /* Location field */
2164 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "cupsdSendError code=%d, auth_type=%d", code
, auth_type
);
2168 * Force client to upgrade for authentication if that is how the
2169 * server is configured...
2172 if (code
== HTTP_STATUS_UNAUTHORIZED
&&
2173 DefaultEncryption
== HTTP_ENCRYPTION_REQUIRED
&&
2174 _cups_strcasecmp(httpGetHostname(con
->http
, NULL
, 0), "localhost") &&
2175 !httpIsEncrypted(con
->http
))
2177 code
= HTTP_STATUS_UPGRADE_REQUIRED
;
2179 #endif /* HAVE_SSL */
2182 * Put the request in the access_log file...
2185 cupsdLogRequest(con
, code
);
2188 * To work around bugs in some proxies, don't use Keep-Alive for some
2191 * Kerberos authentication doesn't work without Keep-Alive, so
2192 * never disable it in that case.
2195 strlcpy(location
, httpGetField(con
->http
, HTTP_FIELD_LOCATION
), sizeof(location
));
2197 httpClearFields(con
->http
);
2199 httpSetField(con
->http
, HTTP_FIELD_LOCATION
, location
);
2201 if (code
>= HTTP_STATUS_BAD_REQUEST
&& con
->type
!= CUPSD_AUTH_NEGOTIATE
)
2202 httpSetKeepAlive(con
->http
, HTTP_KEEPALIVE_OFF
);
2204 if (httpGetVersion(con
->http
) >= HTTP_VERSION_1_1
&&
2205 httpGetKeepAlive(con
->http
) == HTTP_KEEPALIVE_OFF
)
2206 httpSetField(con
->http
, HTTP_FIELD_CONNECTION
, "close");
2208 if (code
>= HTTP_STATUS_BAD_REQUEST
)
2211 * Send a human-readable error message.
2214 char message
[4096], /* Message for user */
2215 urltext
[1024], /* URL redirection text */
2216 redirect
[1024]; /* Redirection link */
2217 const char *text
; /* Status-specific text */
2222 if (code
== HTTP_STATUS_UNAUTHORIZED
)
2223 text
= _cupsLangString(con
->language
,
2224 _("Enter your username and password or the "
2225 "root username and password to access this "
2226 "page. If you are using Kerberos authentication, "
2227 "make sure you have a valid Kerberos ticket."));
2228 else if (code
== HTTP_STATUS_UPGRADE_REQUIRED
)
2232 snprintf(urltext
, sizeof(urltext
),
2233 _cupsLangString(con
->language
,
2234 _("You must access this page using the URL "
2235 "<A HREF=\"https://%s:%d%s\">"
2236 "https://%s:%d%s</A>.")),
2237 con
->servername
, con
->serverport
, con
->uri
,
2238 con
->servername
, con
->serverport
, con
->uri
);
2240 snprintf(redirect
, sizeof(redirect
),
2241 "<META HTTP-EQUIV=\"Refresh\" "
2242 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
2243 con
->servername
, con
->serverport
, con
->uri
);
2245 else if (code
== HTTP_STATUS_CUPS_WEBIF_DISABLED
)
2246 text
= _cupsLangString(con
->language
,
2247 _("The web interface is currently disabled. Run "
2248 "\"cupsctl WebInterface=yes\" to enable it."));
2252 snprintf(message
, sizeof(message
),
2253 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2254 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
2257 "\t<META HTTP-EQUIV=\"Content-Type\" "
2258 "CONTENT=\"text/html; charset=utf-8\">\n"
2259 "\t<TITLE>%s - " CUPS_SVERSION
"</TITLE>\n"
2260 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2261 "HREF=\"/cups.css\">\n"
2269 _httpStatus(con
->language
, code
), redirect
,
2270 _httpStatus(con
->language
, code
), text
);
2273 * Send an error message back to the client. If the error code is a
2274 * 400 or 500 series, make sure the message contains some text, too!
2277 size_t length
= strlen(message
); /* Length of message */
2279 httpSetLength(con
->http
, length
);
2281 if (!cupsdSendHeader(con
, code
, "text/html", auth_type
))
2284 if (httpWrite2(con
->http
, message
, length
) < 0)
2287 if (httpFlushWrite(con
->http
) < 0)
2292 httpSetField(con
->http
, HTTP_FIELD_CONTENT_LENGTH
, "0");
2294 if (!cupsdSendHeader(con
, code
, NULL
, auth_type
))
2303 * 'cupsdSendHeader()' - Send an HTTP request.
2306 int /* O - 1 on success, 0 on failure */
2308 cupsd_client_t
*con
, /* I - Client to send to */
2309 http_status_t code
, /* I - HTTP status code */
2310 char *type
, /* I - MIME type of document */
2311 int auth_type
) /* I - Type of authentication */
2313 char auth_str
[1024]; /* Authorization string */
2316 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "cupsdSendHeader: code=%d, type=\"%s\", auth_type=%d", code
, type
, auth_type
);
2319 * Send the HTTP status header...
2322 if (code
== HTTP_STATUS_CUPS_WEBIF_DISABLED
)
2325 * Treat our special "web interface is disabled" status as "200 OK" for web
2329 code
= HTTP_STATUS_OK
;
2333 httpSetField(con
->http
, HTTP_FIELD_SERVER
, ServerHeader
);
2335 if (code
== HTTP_STATUS_METHOD_NOT_ALLOWED
)
2336 httpSetField(con
->http
, HTTP_FIELD_ALLOW
, "GET, HEAD, OPTIONS, POST, PUT");
2338 if (code
== HTTP_STATUS_UNAUTHORIZED
)
2340 if (auth_type
== CUPSD_AUTH_NONE
)
2342 if (!con
->best
|| con
->best
->type
<= CUPSD_AUTH_NONE
)
2343 auth_type
= cupsdDefaultAuthType();
2345 auth_type
= con
->best
->type
;
2350 if (auth_type
== CUPSD_AUTH_BASIC
)
2351 strlcpy(auth_str
, "Basic realm=\"CUPS\"", sizeof(auth_str
));
2353 else if (auth_type
== CUPSD_AUTH_NEGOTIATE
)
2356 if (httpAddrFamily(httpGetAddress(con
->http
)) == AF_LOCAL
)
2357 strlcpy(auth_str
, "Basic realm=\"CUPS\"", sizeof(auth_str
));
2359 # endif /* AF_LOCAL */
2360 strlcpy(auth_str
, "Negotiate", sizeof(auth_str
));
2362 #endif /* HAVE_GSSAPI */
2364 if (con
->best
&& auth_type
!= CUPSD_AUTH_NEGOTIATE
&&
2365 !_cups_strcasecmp(httpGetHostname(con
->http
, NULL
, 0), "localhost"))
2368 * Add a "trc" (try root certification) parameter for local non-Kerberos
2369 * requests when the request requires system group membership - then the
2370 * client knows the root certificate can/should be used.
2372 * Also, for OS X we also look for @AUTHKEY and add an "authkey"
2373 * parameter as needed...
2376 char *name
, /* Current user name */
2377 *auth_key
; /* Auth key buffer */
2378 size_t auth_size
; /* Size of remaining buffer */
2380 auth_key
= auth_str
+ strlen(auth_str
);
2381 auth_size
= sizeof(auth_str
) - (size_t)(auth_key
- auth_str
);
2383 for (name
= (char *)cupsArrayFirst(con
->best
->names
);
2385 name
= (char *)cupsArrayNext(con
->best
->names
))
2387 #ifdef HAVE_AUTHORIZATION_H
2388 if (!_cups_strncasecmp(name
, "@AUTHKEY(", 9))
2390 snprintf(auth_key
, auth_size
, ", authkey=\"%s\"", name
+ 9);
2391 /* end parenthesis is stripped in conf.c */
2395 #endif /* HAVE_AUTHORIZATION_H */
2396 if (!_cups_strcasecmp(name
, "@SYSTEM"))
2398 #ifdef HAVE_AUTHORIZATION_H
2399 if (SystemGroupAuthKey
)
2400 snprintf(auth_key
, auth_size
,
2402 SystemGroupAuthKey
);
2405 strlcpy(auth_key
, ", trc=\"y\"", auth_size
);
2406 #endif /* HAVE_AUTHORIZATION_H */
2414 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "WWW-Authenticate: %s", auth_str
);
2416 httpSetField(con
->http
, HTTP_FIELD_WWW_AUTHENTICATE
, auth_str
);
2420 if (con
->language
&& strcmp(con
->language
->language
, "C"))
2421 httpSetField(con
->http
, HTTP_FIELD_CONTENT_LANGUAGE
, con
->language
->language
);
2425 if (!strcmp(type
, "text/html"))
2426 httpSetField(con
->http
, HTTP_FIELD_CONTENT_TYPE
, "text/html; charset=utf-8");
2428 httpSetField(con
->http
, HTTP_FIELD_CONTENT_TYPE
, type
);
2431 return (!httpWriteResponse(con
->http
, code
));
2436 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2440 cupsdUpdateCGI(void)
2442 char *ptr
, /* Pointer to end of line in buffer */
2443 message
[1024]; /* Pointer to message text */
2444 int loglevel
; /* Log level for message */
2447 while ((ptr
= cupsdStatBufUpdate(CGIStatusBuffer
, &loglevel
,
2448 message
, sizeof(message
))) != NULL
)
2450 if (loglevel
== CUPSD_LOG_INFO
)
2451 cupsdLogMessage(CUPSD_LOG_INFO
, "%s", message
);
2453 if (!strchr(CGIStatusBuffer
->buffer
, '\n'))
2457 if (ptr
== NULL
&& !CGIStatusBuffer
->bufused
)
2460 * Fatal error on pipe - should never happen!
2463 cupsdLogMessage(CUPSD_LOG_CRIT
,
2464 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2471 * 'cupsdWriteClient()' - Write data to a client as needed.
2475 cupsdWriteClient(cupsd_client_t
*con
) /* I - Client connection */
2477 int bytes
, /* Number of bytes written */
2478 field_col
; /* Current column */
2479 char *bufptr
, /* Pointer into buffer */
2480 *bufend
; /* Pointer to end of buffer */
2481 ipp_state_t ipp_state
; /* IPP state value */
2484 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "con->http=%p", con
->http
);
2485 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
2490 "data_encoding=HTTP_ENCODING_%s, "
2491 "data_remaining=" CUPS_LLFMT
", "
2495 httpError(con
->http
), (int)httpGetReady(con
->http
),
2496 httpStateString(httpGetState(con
->http
)),
2497 httpIsChunked(con
->http
) ? "CHUNKED" : "LENGTH",
2498 CUPS_LLCAST
httpGetLength2(con
->http
),
2500 con
->response
? ippStateString(ippGetState(con
->request
)) : "",
2501 con
->pipe_pid
, con
->file
);
2503 if (httpGetState(con
->http
) != HTTP_STATE_GET_SEND
&&
2504 httpGetState(con
->http
) != HTTP_STATE_POST_SEND
)
2507 * If we get called in the wrong state, then something went wrong with the
2508 * connection and we need to shut it down...
2511 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing on unexpected HTTP write state %s.",
2512 httpStateString(httpGetState(con
->http
)));
2513 cupsdCloseClient(con
);
2520 * Make sure we select on the CGI output...
2523 cupsdAddSelect(con
->file
, (cupsd_selfunc_t
)write_pipe
, NULL
, con
);
2525 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Waiting for CGI data.");
2527 if (!con
->file_ready
)
2530 * Try again later when there is CGI output available...
2533 cupsdRemoveSelect(httpGetFd(con
->http
));
2537 con
->file_ready
= 0;
2540 bytes
= (ssize_t
)(sizeof(con
->header
) - (size_t)con
->header_used
);
2542 if (!con
->pipe_pid
&& bytes
> (ssize_t
)httpGetRemaining(con
->http
))
2545 * Limit GET bytes to original size of file (STR #3265)...
2548 bytes
= (ssize_t
)httpGetRemaining(con
->http
);
2551 if (con
->response
&& con
->response
->state
!= IPP_STATE_DATA
)
2553 size_t wused
= httpGetPending(con
->http
); /* Previous write buffer use */
2558 * Write a single attribute or the IPP message header...
2561 ipp_state
= ippWrite(con
->http
, con
->response
);
2564 * If the write buffer has been flushed, stop buffering up attributes...
2567 if (httpGetPending(con
->http
) <= wused
)
2570 while (ipp_state
!= IPP_STATE_DATA
&& ipp_state
!= IPP_STATE_ERROR
);
2572 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
2573 "Writing IPP response, ipp_state=%s, old "
2574 "wused=" CUPS_LLFMT
", new wused=" CUPS_LLFMT
,
2575 ippStateString(ipp_state
),
2576 CUPS_LLCAST wused
, CUPS_LLCAST
httpGetPending(con
->http
));
2578 if (httpGetPending(con
->http
) > 0)
2579 httpFlushWrite(con
->http
);
2581 bytes
= ipp_state
!= IPP_STATE_ERROR
&&
2582 (con
->file
>= 0 || ipp_state
!= IPP_STATE_DATA
);
2584 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
2585 "bytes=%d, http_state=%d, data_remaining=" CUPS_LLFMT
,
2586 (int)bytes
, httpGetState(con
->http
),
2587 CUPS_LLCAST
httpGetLength2(con
->http
));
2589 else if ((bytes
= read(con
->file
, con
->header
+ con
->header_used
, (size_t)bytes
)) > 0)
2591 con
->header_used
+= bytes
;
2593 if (con
->pipe_pid
&& !con
->got_fields
)
2596 * Inspect the data for Content-Type and other fields.
2599 for (bufptr
= con
->header
, bufend
= con
->header
+ con
->header_used
,
2601 !con
->got_fields
&& bufptr
< bufend
;
2604 if (*bufptr
== '\n')
2607 * Send line to client...
2610 if (bufptr
> con
->header
&& bufptr
[-1] == '\r')
2614 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Script header: %s", con
->header
);
2616 if (!con
->sent_header
)
2619 * Handle redirection and CGI status codes...
2622 http_field_t field
; /* HTTP field */
2623 char *value
= strchr(con
->header
, ':');
2624 /* Value of field */
2629 while (isspace(*value
& 255))
2633 field
= httpFieldValue(con
->header
);
2635 if (field
!= HTTP_FIELD_UNKNOWN
&& value
)
2637 httpSetField(con
->http
, field
, value
);
2639 if (field
== HTTP_FIELD_LOCATION
)
2641 con
->pipe_status
= HTTP_STATUS_SEE_OTHER
;
2642 con
->sent_header
= 2;
2645 con
->sent_header
= 1;
2647 else if (!_cups_strcasecmp(con
->header
, "Status") && value
)
2649 con
->pipe_status
= (http_status_t
)atoi(value
);
2650 con
->sent_header
= 2;
2652 else if (!_cups_strcasecmp(con
->header
, "Set-Cookie") && value
)
2654 httpSetCookie(con
->http
, value
);
2655 con
->sent_header
= 1;
2663 con
->header_used
-= bufptr
- con
->header
;
2665 if (con
->header_used
> 0)
2666 memmove(con
->header
, bufptr
, (size_t)con
->header_used
);
2668 bufptr
= con
->header
- 1;
2671 * See if the line was empty...
2676 con
->got_fields
= 1;
2678 if (httpGetVersion(con
->http
) == HTTP_VERSION_1_1
&&
2679 !httpGetField(con
->http
, HTTP_FIELD_CONTENT_LENGTH
)[0])
2680 httpSetLength(con
->http
, 0);
2682 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Sending status %d for CGI.", con
->pipe_status
);
2684 if (con
->pipe_status
== HTTP_STATUS_OK
)
2686 if (!cupsdSendHeader(con
, con
->pipe_status
, NULL
, CUPSD_AUTH_NONE
))
2688 cupsdCloseClient(con
);
2694 if (!cupsdSendError(con
, con
->pipe_status
, CUPSD_AUTH_NONE
))
2696 cupsdCloseClient(con
);
2704 else if (*bufptr
!= '\r')
2708 if (!con
->got_fields
)
2712 if (con
->header_used
> 0)
2714 if (httpWrite2(con
->http
, con
->header
, (size_t)con
->header_used
) < 0)
2716 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing for error %d (%s)",
2717 httpError(con
->http
), strerror(httpError(con
->http
)));
2718 cupsdCloseClient(con
);
2722 if (httpIsChunked(con
->http
))
2723 httpFlushWrite(con
->http
);
2725 con
->bytes
+= con
->header_used
;
2727 if (httpGetState(con
->http
) == HTTP_STATE_WAITING
)
2730 bytes
= con
->header_used
;
2732 con
->header_used
= 0;
2737 (httpGetState(con
->http
) != HTTP_STATE_GET_SEND
&&
2738 httpGetState(con
->http
) != HTTP_STATE_POST_SEND
))
2740 if (!con
->sent_header
&& con
->pipe_pid
)
2741 cupsdSendError(con
, HTTP_STATUS_SERVER_ERROR
, CUPSD_AUTH_NONE
);
2744 cupsdLogRequest(con
, HTTP_STATUS_OK
);
2746 if (httpIsChunked(con
->http
) && (!con
->pipe_pid
|| con
->sent_header
> 0))
2748 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Sending 0-length chunk.");
2750 if (httpWrite2(con
->http
, "", 0) < 0)
2752 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Closing for error %d (%s)",
2753 httpError(con
->http
), strerror(httpError(con
->http
)));
2754 cupsdCloseClient(con
);
2759 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Flushing write buffer.");
2760 httpFlushWrite(con
->http
);
2761 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "New state is %s", httpStateString(httpGetState(con
->http
)));
2764 cupsdAddSelect(httpGetFd(con
->http
), (cupsd_selfunc_t
)cupsdReadClient
, NULL
, con
);
2766 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Waiting for request.");
2770 cupsdRemoveSelect(con
->file
);
2773 cupsdEndProcess(con
->pipe_pid
, 0);
2782 unlink(con
->filename
);
2783 cupsdClearString(&con
->filename
);
2788 ippDelete(con
->request
);
2789 con
->request
= NULL
;
2794 ippDelete(con
->response
);
2795 con
->response
= NULL
;
2798 cupsdClearString(&con
->command
);
2799 cupsdClearString(&con
->options
);
2800 cupsdClearString(&con
->query_string
);
2802 if (!httpGetKeepAlive(con
->http
))
2804 cupsdLogClient(con
, CUPSD_LOG_DEBUG
,
2805 "Closing because Keep-Alive is disabled.");
2806 cupsdCloseClient(con
);
2811 cupsArrayRemove(ActiveClients
, con
);
2812 cupsdSetBusyState();
2819 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
2822 static int /* O - 1 if modified since */
2824 cupsd_client_t
*con
, /* I - Client connection */
2825 struct stat
*filestats
) /* I - File information */
2827 const char *ptr
; /* Pointer into field */
2828 time_t date
; /* Time/date value */
2829 off_t size
; /* Size/length value */
2834 ptr
= httpGetField(con
->http
, HTTP_FIELD_IF_MODIFIED_SINCE
);
2839 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
);
2841 while (*ptr
!= '\0')
2843 while (isspace(*ptr
) || *ptr
== ';')
2846 if (_cups_strncasecmp(ptr
, "length=", 7) == 0)
2849 size
= strtoll(ptr
, NULL
, 10);
2851 while (isdigit(*ptr
))
2854 else if (isalpha(*ptr
))
2856 date
= httpGetDateTime(ptr
);
2857 while (*ptr
!= '\0' && *ptr
!= ';')
2864 return ((size
!= filestats
->st_size
&& size
!= 0) ||
2865 (date
< filestats
->st_mtime
&& date
!= 0) ||
2866 (size
== 0 && date
== 0));
2871 * 'compare_clients()' - Compare two client connections.
2874 static int /* O - Result of comparison */
2875 compare_clients(cupsd_client_t
*a
, /* I - First client */
2876 cupsd_client_t
*b
, /* I - Second client */
2877 void *data
) /* I - User data (not used) */
2892 * 'cupsd_start_tls()' - Start encryption on a connection.
2895 static int /* O - 0 on success, -1 on error */
2896 cupsd_start_tls(cupsd_client_t
*con
, /* I - Client connection */
2897 http_encryption_t e
) /* I - Encryption mode */
2899 if (httpEncryption(con
->http
, e
))
2901 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Unable to encrypt connection: %s",
2902 cupsLastErrorString());
2906 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Connection now encrypted.");
2909 #endif /* HAVE_SSL */
2913 * 'get_file()' - Get a filename and state info.
2916 static char * /* O - Real filename */
2917 get_file(cupsd_client_t
*con
, /* I - Client connection */
2918 struct stat
*filestats
, /* O - File information */
2919 char *filename
, /* IO - Filename buffer */
2920 size_t len
) /* I - Buffer length */
2922 int status
; /* Status of filesystem calls */
2923 char *ptr
; /* Pointer info filename */
2924 size_t plen
; /* Remaining length after pointer */
2925 char language
[7], /* Language subdirectory, if any */
2926 dest
[1024]; /* Destination name */
2927 int perm_check
= 1; /* Do permissions check? */
2931 * Figure out the real filename...
2936 if (!strncmp(con
->uri
, "/ppd/", 5) && !strchr(con
->uri
+ 5, '/'))
2938 strlcpy(dest
, con
->uri
+ 5, sizeof(dest
));
2939 ptr
= dest
+ strlen(dest
) - 4;
2941 if (ptr
<= dest
|| strcmp(ptr
, ".ppd"))
2943 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Disallowed path \"%s\".", con
->uri
);
2948 if (!cupsdFindPrinter(dest
))
2950 cupsdLogClient(con
, CUPSD_LOG_INFO
, "No printer \"%s\" found.", dest
);
2954 snprintf(filename
, len
, "%s%s", ServerRoot
, con
->uri
);
2958 else if (!strncmp(con
->uri
, "/icons/", 7) && !strchr(con
->uri
+ 7, '/'))
2960 strlcpy(dest
, con
->uri
+ 7, sizeof(dest
));
2961 ptr
= dest
+ strlen(dest
) - 4;
2963 if (ptr
<= dest
|| strcmp(ptr
, ".png"))
2965 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Disallowed path \"%s\".", con
->uri
);
2970 if (!cupsdFindDest(dest
))
2972 cupsdLogClient(con
, CUPSD_LOG_INFO
, "No printer \"%s\" found.", dest
);
2976 snprintf(filename
, len
, "%s/%s.png", CacheDir
, dest
);
2977 if (access(filename
, F_OK
) < 0)
2978 snprintf(filename
, len
, "%s/images/generic.png", DocumentRoot
);
2982 else if (!strncmp(con
->uri
, "/rss/", 5) && !strchr(con
->uri
+ 5, '/'))
2983 snprintf(filename
, len
, "%s/rss/%s", CacheDir
, con
->uri
+ 5);
2984 else if (!strcmp(con
->uri
, "/admin/conf/cupsd.conf"))
2986 strlcpy(filename
, ConfigurationFile
, len
);
2990 else if (!strncmp(con
->uri
, "/admin/log/", 11))
2992 if (!strncmp(con
->uri
+ 11, "access_log", 10) && AccessLog
[0] == '/')
2993 strlcpy(filename
, AccessLog
, len
);
2994 else if (!strncmp(con
->uri
+ 11, "error_log", 9) && ErrorLog
[0] == '/')
2995 strlcpy(filename
, ErrorLog
, len
);
2996 else if (!strncmp(con
->uri
+ 11, "page_log", 8) && PageLog
[0] == '/')
2997 strlcpy(filename
, PageLog
, len
);
3003 else if (con
->language
)
3005 snprintf(language
, sizeof(language
), "/%s", con
->language
->language
);
3006 snprintf(filename
, len
, "%s%s%s", DocumentRoot
, language
, con
->uri
);
3009 snprintf(filename
, len
, "%s%s", DocumentRoot
, con
->uri
);
3011 if ((ptr
= strchr(filename
, '?')) != NULL
)
3015 * Grab the status for this language; if there isn't a language-specific file
3016 * then fallback to the default one...
3019 if ((status
= lstat(filename
, filestats
)) != 0 && language
[0] &&
3020 strncmp(con
->uri
, "/icons/", 7) &&
3021 strncmp(con
->uri
, "/ppd/", 5) &&
3022 strncmp(con
->uri
, "/rss/", 5) &&
3023 strncmp(con
->uri
, "/admin/conf/", 12) &&
3024 strncmp(con
->uri
, "/admin/log/", 11))
3027 * Drop the country code...
3031 snprintf(filename
, len
, "%s%s%s", DocumentRoot
, language
, con
->uri
);
3033 if ((ptr
= strchr(filename
, '?')) != NULL
)
3036 if ((status
= lstat(filename
, filestats
)) != 0)
3039 * Drop the language prefix and try the root directory...
3043 snprintf(filename
, len
, "%s%s", DocumentRoot
, con
->uri
);
3045 if ((ptr
= strchr(filename
, '?')) != NULL
)
3048 status
= lstat(filename
, filestats
);
3053 * If we've found a symlink, 404 the sucker to avoid disclosing information.
3056 if (!status
&& S_ISLNK(filestats
->st_mode
))
3058 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Symlinks such as \"%s\" are not allowed.", filename
);
3063 * Similarly, if the file/directory does not have world read permissions, do
3064 * not allow access...
3067 if (!status
&& perm_check
&& !(filestats
->st_mode
& S_IROTH
))
3069 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Files/directories such as \"%s\" must be world-readable.", filename
);
3074 * If we've found a directory, get the index.html file instead...
3077 if (!status
&& S_ISDIR(filestats
->st_mode
))
3080 * Make sure the URI ends with a slash...
3083 if (con
->uri
[strlen(con
->uri
) - 1] != '/')
3084 strlcat(con
->uri
, "/", sizeof(con
->uri
));
3087 * Find the directory index file, trying every language...
3092 if (status
&& language
[0])
3095 * Try a different language subset...
3099 language
[0] = '\0'; /* Strip country code */
3101 language
[0] = '\0'; /* Strip language */
3105 * Look for the index file...
3108 snprintf(filename
, len
, "%s%s%s", DocumentRoot
, language
, con
->uri
);
3110 if ((ptr
= strchr(filename
, '?')) != NULL
)
3113 ptr
= filename
+ strlen(filename
);
3114 plen
= len
- (size_t)(ptr
- filename
);
3116 strlcpy(ptr
, "index.html", plen
);
3117 status
= lstat(filename
, filestats
);
3122 strlcpy(ptr
, "index.class", plen
);
3123 status
= lstat(filename
, filestats
);
3125 #endif /* HAVE_JAVA */
3130 strlcpy(ptr
, "index.pl", plen
);
3131 status
= lstat(filename
, filestats
);
3133 #endif /* HAVE_PERL */
3138 strlcpy(ptr
, "index.php", plen
);
3139 status
= lstat(filename
, filestats
);
3141 #endif /* HAVE_PHP */
3146 strlcpy(ptr
, "index.pyc", plen
);
3147 status
= lstat(filename
, filestats
);
3152 strlcpy(ptr
, "index.py", plen
);
3153 status
= lstat(filename
, filestats
);
3155 #endif /* HAVE_PYTHON */
3158 while (status
&& language
[0]);
3161 * If we've found a symlink, 404 the sucker to avoid disclosing information.
3164 if (!status
&& S_ISLNK(filestats
->st_mode
))
3166 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Symlinks such as \"%s\" are not allowed.", filename
);
3171 * Similarly, if the file/directory does not have world read permissions, do
3172 * not allow access...
3175 if (!status
&& perm_check
&& !(filestats
->st_mode
& S_IROTH
))
3177 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Files/directories such as \"%s\" must be world-readable.", filename
);
3182 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "get_file: filestats=%p, filename=%p, len=" CUPS_LLFMT
", returning \"%s\".", filestats
, filename
, CUPS_LLCAST len
, status
? "(null)" : filename
);
3192 * 'install_cupsd_conf()' - Install a configuration file.
3195 static http_status_t
/* O - Status */
3196 install_cupsd_conf(cupsd_client_t
*con
) /* I - Connection */
3198 char filename
[1024]; /* Configuration filename */
3199 cups_file_t
*in
, /* Input file */
3200 *out
; /* Output file */
3201 char buffer
[16384]; /* Copy buffer */
3202 ssize_t bytes
; /* Number of bytes */
3206 * Open the request file...
3209 if ((in
= cupsFileOpen(con
->filename
, "rb")) == NULL
)
3211 cupsdLogClient(con
, CUPSD_LOG_ERROR
, "Unable to open request file \"%s\": %s",
3212 con
->filename
, strerror(errno
));
3217 * Open the new config file...
3220 if ((out
= cupsdCreateConfFile(ConfigurationFile
, ConfigFilePerm
)) == NULL
)
3226 cupsdLogClient(con
, CUPSD_LOG_INFO
, "Installing config file \"%s\"...",
3230 * Copy from the request to the new config file...
3233 while ((bytes
= cupsFileRead(in
, buffer
, sizeof(buffer
))) > 0)
3234 if (cupsFileWrite(out
, buffer
, (size_t)bytes
) < bytes
)
3236 cupsdLogClient(con
, CUPSD_LOG_ERROR
,
3237 "Unable to copy to config file \"%s\": %s",
3238 ConfigurationFile
, strerror(errno
));
3243 snprintf(filename
, sizeof(filename
), "%s.N", ConfigurationFile
);
3244 cupsdUnlinkOrRemoveFile(filename
);
3250 * Close the files...
3255 if (cupsdCloseCreatedConfFile(out
, ConfigurationFile
))
3259 * Remove the request file...
3262 cupsdUnlinkOrRemoveFile(con
->filename
);
3263 cupsdClearString(&con
->filename
);
3266 * Set the NeedReload flag...
3269 NeedReload
= RELOAD_CUPSD
;
3270 ReloadTime
= time(NULL
);
3273 * Return that the file was created successfully...
3276 return (HTTP_STATUS_CREATED
);
3279 * Common exit for errors...
3284 cupsdUnlinkOrRemoveFile(con
->filename
);
3285 cupsdClearString(&con
->filename
);
3287 return (HTTP_STATUS_SERVER_ERROR
);
3292 * 'is_cgi()' - Is the resource a CGI script/program?
3295 static int /* O - 1 = CGI, 0 = file */
3296 is_cgi(cupsd_client_t
*con
, /* I - Client connection */
3297 const char *filename
, /* I - Real filename */
3298 struct stat
*filestats
, /* I - File information */
3299 mime_type_t
*type
) /* I - MIME type */
3301 const char *options
; /* Options on URL */
3305 * Get the options, if any...
3308 if ((options
= strchr(con
->uri
, '?')) != NULL
)
3311 cupsdSetStringf(&(con
->query_string
), "QUERY_STRING=%s", options
);
3315 * Check for known types...
3318 if (!type
|| _cups_strcasecmp(type
->super
, "application"))
3320 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");
3324 if (!_cups_strcasecmp(type
->type
, "x-httpd-cgi") &&
3325 (filestats
->st_mode
& 0111))
3328 * "application/x-httpd-cgi" is a CGI script.
3331 cupsdSetString(&con
->command
, filename
);
3334 cupsdSetStringf(&con
->options
, " %s", options
);
3336 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename
, filestats
, type
->super
, type
->type
);
3340 else if (!_cups_strcasecmp(type
->type
, "x-httpd-java"))
3343 * "application/x-httpd-java" is a Java servlet.
3346 cupsdSetString(&con
->command
, CUPS_JAVA
);
3349 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3351 cupsdSetStringf(&con
->options
, " %s", filename
);
3353 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename
, filestats
, type
->super
, type
->type
);
3356 #endif /* HAVE_JAVA */
3358 else if (!_cups_strcasecmp(type
->type
, "x-httpd-perl"))
3361 * "application/x-httpd-perl" is a Perl page.
3364 cupsdSetString(&con
->command
, CUPS_PERL
);
3367 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3369 cupsdSetStringf(&con
->options
, " %s", filename
);
3371 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename
, filestats
, type
->super
, type
->type
);
3374 #endif /* HAVE_PERL */
3376 else if (!_cups_strcasecmp(type
->type
, "x-httpd-php"))
3379 * "application/x-httpd-php" is a PHP page.
3382 cupsdSetString(&con
->command
, CUPS_PHP
);
3385 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3387 cupsdSetStringf(&con
->options
, " %s", filename
);
3389 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename
, filestats
, type
->super
, type
->type
);
3392 #endif /* HAVE_PHP */
3394 else if (!_cups_strcasecmp(type
->type
, "x-httpd-python"))
3397 * "application/x-httpd-python" is a Python page.
3400 cupsdSetString(&con
->command
, CUPS_PYTHON
);
3403 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3405 cupsdSetStringf(&con
->options
, " %s", filename
);
3407 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 1.", filename
, filestats
, type
->super
, type
->type
);
3410 #endif /* HAVE_PYTHON */
3412 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "is_cgi: filename=\"%s\", filestats=%p, type=%s/%s, returning 0.", filename
, filestats
, type
->super
, type
->type
);
3418 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3421 static int /* O - 0 if relative, 1 if absolute */
3422 is_path_absolute(const char *path
) /* I - Input path */
3425 * Check for a leading slash...
3432 * Check for "<" or quotes in the path and reject since this is probably
3433 * someone trying to inject HTML...
3436 if (strchr(path
, '<') != NULL
|| strchr(path
, '\"') != NULL
|| strchr(path
, '\'') != NULL
)
3440 * Check for "/.." in the path...
3443 while ((path
= strstr(path
, "/..")) != NULL
)
3445 if (!path
[3] || path
[3] == '/')
3452 * If we haven't found any relative paths, return 1 indicating an
3461 * 'pipe_command()' - Pipe the output of a command to the remote client.
3464 static int /* O - Process ID */
3465 pipe_command(cupsd_client_t
*con
, /* I - Client connection */
3466 int infile
, /* I - Standard input for command */
3467 int *outfile
, /* O - Standard output for command */
3468 char *command
, /* I - Command to run */
3469 char *options
, /* I - Options for command */
3470 int root
) /* I - Run as root? */
3472 int i
; /* Looping var */
3473 int pid
; /* Process ID */
3474 char *commptr
, /* Command string pointer */
3475 commch
; /* Command string character */
3476 char *uriptr
; /* URI string pointer */
3477 int fds
[2]; /* Pipe FDs */
3478 int argc
; /* Number of arguments */
3479 int envc
; /* Number of environment variables */
3480 char argbuf
[10240], /* Argument buffer */
3481 *argv
[100], /* Argument strings */
3482 *envp
[MAX_ENV
+ 20]; /* Environment variables */
3483 char auth_type
[256], /* AUTH_TYPE environment variable */
3484 content_length
[1024], /* CONTENT_LENGTH environment variable */
3485 content_type
[1024], /* CONTENT_TYPE environment variable */
3486 http_cookie
[32768], /* HTTP_COOKIE environment variable */
3487 http_referer
[1024], /* HTTP_REFERER environment variable */
3488 http_user_agent
[1024], /* HTTP_USER_AGENT environment variable */
3489 lang
[1024], /* LANG environment variable */
3490 path_info
[1024], /* PATH_INFO environment variable */
3491 remote_addr
[1024], /* REMOTE_ADDR environment variable */
3492 remote_host
[1024], /* REMOTE_HOST environment variable */
3493 remote_user
[1024], /* REMOTE_USER environment variable */
3494 script_filename
[1024], /* SCRIPT_FILENAME environment variable */
3495 script_name
[1024], /* SCRIPT_NAME environment variable */
3496 server_name
[1024], /* SERVER_NAME environment variable */
3497 server_port
[1024]; /* SERVER_PORT environment variable */
3498 ipp_attribute_t
*attr
; /* attributes-natural-language attribute */
3502 * Parse a copy of the options string, which is of the form:
3504 * argument+argument+argument
3505 * ?argument+argument+argument
3506 * param=value¶m=value
3507 * ?param=value¶m=value
3508 * /name?argument+argument+argument
3509 * /name?param=value¶m=value
3511 * If the string contains an "=" character after the initial name,
3512 * then we treat it as a HTTP GET form request and make a copy of
3513 * the remaining string for the environment variable.
3515 * The string is always parsed out as command-line arguments, to
3516 * be consistent with Apache...
3519 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "pipe_command: infile=%d, outfile=%p, command=\"%s\", options=\"%s\", root=%d", infile
, outfile
, command
, options
? options
: "(null)", root
);
3524 strlcpy(argbuf
, options
, sizeof(argbuf
));
3528 if (argbuf
[0] == '/')
3531 * Found some trailing path information, set PATH_INFO...
3534 if ((commptr
= strchr(argbuf
, '?')) == NULL
)
3535 commptr
= argbuf
+ strlen(argbuf
);
3539 snprintf(path_info
, sizeof(path_info
), "PATH_INFO=%s", argbuf
);
3545 path_info
[0] = '\0';
3547 if (*commptr
== ' ')
3551 if (*commptr
== '?' && con
->operation
== HTTP_STATE_GET
&& !con
->query_string
)
3554 cupsdSetStringf(&(con
->query_string
), "QUERY_STRING=%s", commptr
);
3561 argv
[argc
++] = commptr
;
3563 for (; *commptr
&& argc
< 99; commptr
++)
3566 * Break arguments whenever we see a + or space...
3569 if (*commptr
== ' ' || *commptr
== '+')
3571 while (*commptr
== ' ' || *commptr
== '+')
3575 * If we don't have a blank string, save it as another argument...
3580 argv
[argc
] = commptr
;
3586 else if (*commptr
== '%' && isxdigit(commptr
[1] & 255) &&
3587 isxdigit(commptr
[2] & 255))
3590 * Convert the %xx notation to the individual character.
3593 if (commptr
[1] >= '0' && commptr
[1] <= '9')
3594 *commptr
= (char)((commptr
[1] - '0') << 4);
3596 *commptr
= (char)((tolower(commptr
[1]) - 'a' + 10) << 4);
3598 if (commptr
[2] >= '0' && commptr
[2] <= '9')
3599 *commptr
|= commptr
[2] - '0';
3601 *commptr
|= tolower(commptr
[2]) - 'a' + 10;
3603 _cups_strcpy(commptr
+ 1, commptr
+ 3);
3606 * Check for a %00 and break if that is the case...
3618 * Setup the environment variables as needed...
3621 if (con
->username
[0])
3623 snprintf(auth_type
, sizeof(auth_type
), "AUTH_TYPE=%s",
3624 httpGetField(con
->http
, HTTP_FIELD_AUTHORIZATION
));
3626 if ((uriptr
= strchr(auth_type
+ 10, ' ')) != NULL
)
3630 auth_type
[0] = '\0';
3633 (attr
= ippFindAttribute(con
->request
, "attributes-natural-language",
3634 IPP_TAG_LANGUAGE
)) != NULL
)
3636 switch (strlen(attr
->values
[0].string
.text
))
3640 * This is an unknown or badly formatted language code; use
3641 * the POSIX locale...
3644 strlcpy(lang
, "LANG=C", sizeof(lang
));
3649 * Just the language code (ll)...
3652 snprintf(lang
, sizeof(lang
), "LANG=%s.UTF8",
3653 attr
->values
[0].string
.text
);
3658 * Language and country code (ll-cc)...
3661 snprintf(lang
, sizeof(lang
), "LANG=%c%c_%c%c.UTF8",
3662 attr
->values
[0].string
.text
[0],
3663 attr
->values
[0].string
.text
[1],
3664 toupper(attr
->values
[0].string
.text
[3] & 255),
3665 toupper(attr
->values
[0].string
.text
[4] & 255));
3669 else if (con
->language
)
3670 snprintf(lang
, sizeof(lang
), "LANG=%s.UTF8", con
->language
->language
);
3672 strlcpy(lang
, "LANG=C", sizeof(lang
));
3674 strlcpy(remote_addr
, "REMOTE_ADDR=", sizeof(remote_addr
));
3675 httpAddrString(httpGetAddress(con
->http
), remote_addr
+ 12,
3676 sizeof(remote_addr
) - 12);
3678 snprintf(remote_host
, sizeof(remote_host
), "REMOTE_HOST=%s",
3679 httpGetHostname(con
->http
, NULL
, 0));
3681 snprintf(script_name
, sizeof(script_name
), "SCRIPT_NAME=%s", con
->uri
);
3682 if ((uriptr
= strchr(script_name
, '?')) != NULL
)
3685 snprintf(script_filename
, sizeof(script_filename
), "SCRIPT_FILENAME=%s%s",
3686 DocumentRoot
, script_name
+ 12);
3688 snprintf(server_port
, sizeof(server_port
), "SERVER_PORT=%d", con
->serverport
);
3690 if (httpGetField(con
->http
, HTTP_FIELD_HOST
)[0])
3692 char *nameptr
; /* Pointer to ":port" */
3694 snprintf(server_name
, sizeof(server_name
), "SERVER_NAME=%s",
3695 httpGetField(con
->http
, HTTP_FIELD_HOST
));
3696 if ((nameptr
= strrchr(server_name
, ':')) != NULL
&& !strchr(nameptr
, ']'))
3697 *nameptr
= '\0'; /* Strip trailing ":port" */
3700 snprintf(server_name
, sizeof(server_name
), "SERVER_NAME=%s",
3703 envc
= cupsdLoadEnv(envp
, (int)(sizeof(envp
) / sizeof(envp
[0])));
3706 envp
[envc
++] = auth_type
;
3708 envp
[envc
++] = lang
;
3709 envp
[envc
++] = "REDIRECT_STATUS=1";
3710 envp
[envc
++] = "GATEWAY_INTERFACE=CGI/1.1";
3711 envp
[envc
++] = server_name
;
3712 envp
[envc
++] = server_port
;
3713 envp
[envc
++] = remote_addr
;
3714 envp
[envc
++] = remote_host
;
3715 envp
[envc
++] = script_name
;
3716 envp
[envc
++] = script_filename
;
3719 envp
[envc
++] = path_info
;
3721 if (con
->username
[0])
3723 snprintf(remote_user
, sizeof(remote_user
), "REMOTE_USER=%s", con
->username
);
3725 envp
[envc
++] = remote_user
;
3728 if (httpGetVersion(con
->http
) == HTTP_VERSION_1_1
)
3729 envp
[envc
++] = "SERVER_PROTOCOL=HTTP/1.1";
3730 else if (httpGetVersion(con
->http
) == HTTP_VERSION_1_0
)
3731 envp
[envc
++] = "SERVER_PROTOCOL=HTTP/1.0";
3733 envp
[envc
++] = "SERVER_PROTOCOL=HTTP/0.9";
3735 if (httpGetCookie(con
->http
))
3737 snprintf(http_cookie
, sizeof(http_cookie
), "HTTP_COOKIE=%s",
3738 httpGetCookie(con
->http
));
3739 envp
[envc
++] = http_cookie
;
3742 if (httpGetField(con
->http
, HTTP_FIELD_USER_AGENT
)[0])
3744 snprintf(http_user_agent
, sizeof(http_user_agent
), "HTTP_USER_AGENT=%s",
3745 httpGetField(con
->http
, HTTP_FIELD_USER_AGENT
));
3746 envp
[envc
++] = http_user_agent
;
3749 if (httpGetField(con
->http
, HTTP_FIELD_REFERER
)[0])
3751 snprintf(http_referer
, sizeof(http_referer
), "HTTP_REFERER=%s",
3752 httpGetField(con
->http
, HTTP_FIELD_REFERER
));
3753 envp
[envc
++] = http_referer
;
3756 if (con
->operation
== HTTP_STATE_GET
)
3758 envp
[envc
++] = "REQUEST_METHOD=GET";
3760 if (con
->query_string
)
3763 * Add GET form variables after ?...
3766 envp
[envc
++] = con
->query_string
;
3769 envp
[envc
++] = "QUERY_STRING=";
3773 sprintf(content_length
, "CONTENT_LENGTH=" CUPS_LLFMT
,
3774 CUPS_LLCAST con
->bytes
);
3775 snprintf(content_type
, sizeof(content_type
), "CONTENT_TYPE=%s",
3776 httpGetField(con
->http
, HTTP_FIELD_CONTENT_TYPE
));
3778 envp
[envc
++] = "REQUEST_METHOD=POST";
3779 envp
[envc
++] = content_length
;
3780 envp
[envc
++] = content_type
;
3784 * Tell the CGI if we are using encryption...
3787 if (httpIsEncrypted(con
->http
))
3788 envp
[envc
++] = "HTTPS=ON";
3791 * Terminate the environment array...
3796 if (LogLevel
>= CUPSD_LOG_DEBUG
)
3798 for (i
= 0; i
< argc
; i
++)
3799 cupsdLogMessage(CUPSD_LOG_DEBUG
,
3800 "[CGI] argv[%d] = \"%s\"", i
, argv
[i
]);
3801 for (i
= 0; i
< envc
; i
++)
3802 cupsdLogMessage(CUPSD_LOG_DEBUG
,
3803 "[CGI] envp[%d] = \"%s\"", i
, envp
[i
]);
3807 * Create a pipe for the output...
3810 if (cupsdOpenPipe(fds
))
3812 cupsdLogMessage(CUPSD_LOG_ERROR
, "[CGI] Unable to create pipe for %s - %s",
3813 argv
[0], strerror(errno
));
3818 * Then execute the command...
3821 if (cupsdStartProcess(command
, argv
, envp
, infile
, fds
[1], CGIPipes
[1],
3822 -1, -1, root
, DefaultProfile
, NULL
, &pid
) < 0)
3825 * Error - can't fork!
3828 cupsdLogMessage(CUPSD_LOG_ERROR
, "[CGI] Unable to start %s - %s", argv
[0],
3831 cupsdClosePipe(fds
);
3837 * Fork successful - return the PID...
3840 if (con
->username
[0])
3841 cupsdAddCert(pid
, con
->username
, con
->type
);
3843 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[CGI] Started %s (PID %d)", command
, pid
);
3854 * 'valid_host()' - Is the Host: field valid?
3857 static int /* O - 1 if valid, 0 if not */
3858 valid_host(cupsd_client_t
*con
) /* I - Client connection */
3860 cupsd_alias_t
*a
; /* Current alias */
3861 cupsd_netif_t
*netif
; /* Current network interface */
3862 const char *end
; /* End character */
3863 char *ptr
; /* Pointer into host value */
3867 * Copy the Host: header for later use...
3870 strlcpy(con
->clientname
, httpGetField(con
->http
, HTTP_FIELD_HOST
),
3871 sizeof(con
->clientname
));
3872 if ((ptr
= strrchr(con
->clientname
, ':')) != NULL
&& !strchr(ptr
, ']'))
3875 con
->clientport
= atoi(ptr
);
3878 con
->clientport
= con
->serverport
;
3884 if (httpAddrLocalhost(httpGetAddress(con
->http
)))
3887 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
3888 * addresses when accessing CUPS via the loopback interface...
3891 return (!_cups_strcasecmp(con
->clientname
, "localhost") ||
3892 !_cups_strcasecmp(con
->clientname
, "localhost.") ||
3894 !_cups_strcasecmp(con
->clientname
, "localhost.localdomain") ||
3895 #endif /* __linux */
3896 !strcmp(con
->clientname
, "127.0.0.1") ||
3897 !strcmp(con
->clientname
, "[::1]"));
3900 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
3902 * Check if the hostname is something.local (Bonjour); if so, allow it.
3905 if ((end
= strrchr(con
->clientname
, '.')) != NULL
&& end
> con
->clientname
&&
3909 * "." on end, work back to second-to-last "."...
3912 for (end
--; end
> con
->clientname
&& *end
!= '.'; end
--);
3915 if (end
&& (!_cups_strcasecmp(end
, ".local") ||
3916 !_cups_strcasecmp(end
, ".local.")))
3918 #endif /* HAVE_DNSSD || HAVE_AVAHI */
3921 * Check if the hostname is an IP address...
3924 if (isdigit(con
->clientname
[0] & 255) || con
->clientname
[0] == '[')
3927 * Possible IPv4/IPv6 address...
3930 http_addrlist_t
*addrlist
; /* List of addresses */
3933 if ((addrlist
= httpAddrGetList(con
->clientname
, AF_UNSPEC
, NULL
)) != NULL
)
3936 * Good IPv4/IPv6 address...
3939 httpAddrFreeList(addrlist
);
3945 * Check for (alias) name matches...
3948 for (a
= (cupsd_alias_t
*)cupsArrayFirst(ServerAlias
);
3950 a
= (cupsd_alias_t
*)cupsArrayNext(ServerAlias
))
3953 * "ServerAlias *" allows all host values through...
3956 if (!strcmp(a
->name
, "*"))
3959 if (!_cups_strncasecmp(con
->clientname
, a
->name
, a
->namelen
))
3962 * Prefix matches; check the character at the end - it must be "." or nul.
3965 end
= con
->clientname
+ a
->namelen
;
3967 if (!*end
|| (*end
== '.' && !end
[1]))
3972 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
3973 for (a
= (cupsd_alias_t
*)cupsArrayFirst(DNSSDAlias
);
3975 a
= (cupsd_alias_t
*)cupsArrayNext(DNSSDAlias
))
3978 * "ServerAlias *" allows all host values through...
3981 if (!strcmp(a
->name
, "*"))
3984 if (!_cups_strncasecmp(con
->clientname
, a
->name
, a
->namelen
))
3987 * Prefix matches; check the character at the end - it must be "." or nul.
3990 end
= con
->clientname
+ a
->namelen
;
3992 if (!*end
|| (*end
== '.' && !end
[1]))
3996 #endif /* HAVE_DNSSD || HAVE_AVAHI */
3999 * Check for interface hostname matches...
4002 for (netif
= (cupsd_netif_t
*)cupsArrayFirst(NetIFList
);
4004 netif
= (cupsd_netif_t
*)cupsArrayNext(NetIFList
))
4006 if (!_cups_strncasecmp(con
->clientname
, netif
->hostname
, netif
->hostlen
))
4009 * Prefix matches; check the character at the end - it must be "." or nul.
4012 end
= con
->clientname
+ netif
->hostlen
;
4014 if (!*end
|| (*end
== '.' && !end
[1]))
4024 * 'write_file()' - Send a file via HTTP.
4027 static int /* O - 0 on failure, 1 on success */
4028 write_file(cupsd_client_t
*con
, /* I - Client connection */
4029 http_status_t code
, /* I - HTTP status */
4030 char *filename
, /* I - Filename */
4031 char *type
, /* I - File type */
4032 struct stat
*filestats
) /* O - File information */
4034 con
->file
= open(filename
, O_RDONLY
);
4036 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "write_file: code=%d, filename=\"%s\" (%d), type=\"%s\", filestats=%p.", code
, filename
, con
->file
, type
? type
: "(null)", filestats
);
4041 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
4044 con
->sent_header
= 1;
4046 httpClearFields(con
->http
);
4048 httpSetLength(con
->http
, (size_t)filestats
->st_size
);
4050 httpSetField(con
->http
, HTTP_FIELD_LAST_MODIFIED
,
4051 httpGetDateString(filestats
->st_mtime
));
4053 if (!cupsdSendHeader(con
, code
, type
, CUPSD_AUTH_NONE
))
4056 cupsdAddSelect(httpGetFd(con
->http
), NULL
, (cupsd_selfunc_t
)cupsdWriteClient
, con
);
4058 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "Sending file.");
4065 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4069 write_pipe(cupsd_client_t
*con
) /* I - Client connection */
4071 cupsdLogClient(con
, CUPSD_LOG_DEBUG2
, "write_pipe: CGI output on fd %d.", con
->file
);
4073 con
->file_ready
= 1;
4075 cupsdRemoveSelect(con
->file
);
4076 cupsdAddSelect(httpGetFd(con
->http
), NULL
, (cupsd_selfunc_t
)cupsdWriteClient
, con
);
4078 cupsdLogClient(con
, CUPSD_LOG_DEBUG
, "CGI data ready to be sent.");