2 * "$Id: client.c 10886 2013-03-08 17:56:02Z mike $"
4 * Client routines for the CUPS scheduler.
6 * Copyright 2007-2013 by Apple Inc.
7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
9 * This file contains Kerberos support code, copyright 2006 by
12 * These coded instructions, statements, and computer programs are the
13 * property of Apple Inc. and are protected by Federal copyright
14 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
15 * which should have been included with this file. If this file is
16 * file is missing or damaged, see the license at "http://www.cups.org/".
20 * cupsdAcceptClient() - Accept a new client.
21 * cupsdCloseAllClients() - Close all remote clients immediately.
22 * cupsdCloseClient() - Close a remote client.
23 * cupsdFlushHeader() - Flush the header fields to the client.
24 * cupsdReadClient() - Read data from a client.
25 * cupsdSendCommand() - Send output from a command via HTTP.
26 * cupsdSendError() - Send an error message via HTTP.
27 * cupsdSendHeader() - Send an HTTP request.
28 * cupsdUpdateCGI() - Read status messages from CGI scripts and
30 * cupsdWriteClient() - Write data to a client as needed.
31 * check_if_modified() - Decode an "If-Modified-Since" line.
32 * compare_clients() - Compare two client connections.
33 * data_ready() - Check whether data is available from a client.
34 * get_file() - Get a filename and state info.
35 * install_cupsd_conf() - Install a configuration file.
36 * is_cgi() - Is the resource a CGI script/program?
37 * is_path_absolute() - Is a path absolute and free of relative elements
39 * pipe_command() - Pipe the output of a command to the remote
41 * valid_host() - Is the Host: field valid?
42 * write_file() - Send a file via HTTP.
43 * write_pipe() - Flag that data is available on the CGI pipe.
47 * Include necessary headers...
54 #endif /* __APPLE__ */
57 #endif /* HAVE_TCPD_H */
64 static const char * const http_states
[] =
65 { /* HTTP state strings */
70 "HTTP_STATE_GET_SEND",
73 "HTTP_STATE_POST_RECV",
74 "HTTP_STATE_POST_SEND",
76 "HTTP_STATE_PUT_RECV",
81 "HTTP_STATE_UNKNOWN_METHOD",
82 "HTTP_STATE_UNKNOWN_VERSION"
84 static const char * const ipp_states
[] =
85 { /* IPP state strings */
97 static int check_if_modified(cupsd_client_t
*con
,
98 struct stat
*filestats
);
99 static int compare_clients(cupsd_client_t
*a
, cupsd_client_t
*b
,
101 static int data_ready(cupsd_client_t
*con
);
102 static char *get_file(cupsd_client_t
*con
, struct stat
*filestats
,
103 char *filename
, int len
);
104 static http_status_t
install_cupsd_conf(cupsd_client_t
*con
);
105 static int is_cgi(cupsd_client_t
*con
, const char *filename
,
106 struct stat
*filestats
, mime_type_t
*type
);
107 static int is_path_absolute(const char *path
);
108 static int pipe_command(cupsd_client_t
*con
, int infile
, int *outfile
,
109 char *command
, char *options
, int root
);
110 static int valid_host(cupsd_client_t
*con
);
111 static int write_file(cupsd_client_t
*con
, http_status_t code
,
112 char *filename
, char *type
,
113 struct stat
*filestats
);
114 static void write_pipe(cupsd_client_t
*con
);
118 * 'cupsdAcceptClient()' - Accept a new client.
122 cupsdAcceptClient(cupsd_listener_t
*lis
)/* I - Listener socket */
124 int count
; /* Count of connections on a host */
125 int val
; /* Parameter value */
126 cupsd_client_t
*con
, /* New client pointer */
127 *tempcon
; /* Temporary client pointer */
128 http_addrlist_t
*addrlist
, /* List of adddresses for host */
129 *addr
; /* Current address */
130 socklen_t addrlen
; /* Length of address */
131 char *hostname
; /* Hostname for address */
132 http_addr_t temp
; /* Temporary address variable */
133 static time_t last_dos
= 0; /* Time of last DoS attack */
135 struct request_info wrap_req
; /* TCP wrappers request information */
136 #endif /* HAVE_TCPD_H */
139 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
140 "cupsdAcceptClient(lis=%p(%d)) Clients=%d",
141 lis
, lis
->fd
, cupsArrayCount(Clients
));
144 * Make sure we don't have a full set of clients already...
147 if (cupsArrayCount(Clients
) == MaxClients
)
151 * Get a pointer to the next available client...
155 Clients
= cupsArrayNew(NULL
, NULL
);
159 cupsdLogMessage(CUPSD_LOG_ERROR
,
160 "Unable to allocate memory for clients array!");
161 cupsdPauseListening();
166 ActiveClients
= cupsArrayNew((cups_array_func_t
)compare_clients
, NULL
);
170 cupsdLogMessage(CUPSD_LOG_ERROR
,
171 "Unable to allocate memory for active clients array!");
172 cupsdPauseListening();
176 if ((con
= calloc(1, sizeof(cupsd_client_t
))) == NULL
)
178 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to allocate memory for client!");
179 cupsdPauseListening();
184 con
->http
.activity
= time(NULL
);
185 con
->http
.hostaddr
= &(con
->clientaddr
);
186 con
->http
.wait_value
= 10000;
187 con
->http
.mode
= _HTTP_MODE_SERVER
;
190 * Accept the client and get the remote address...
193 addrlen
= sizeof(http_addr_t
);
195 if ((con
->http
.fd
= accept(lis
->fd
, (struct sockaddr
*)con
->http
.hostaddr
,
198 if (errno
== ENFILE
|| errno
== EMFILE
)
199 cupsdPauseListening();
201 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to accept client connection - %s.",
209 * Save the connected port number...
212 _httpAddrSetPort(con
->http
.hostaddr
, httpAddrPort(&(lis
->address
)));
216 * Convert IPv4 over IPv6 addresses (::ffff:n.n.n.n) to IPv4 forms we
217 * can more easily use...
220 if (lis
->address
.addr
.sa_family
== AF_INET6
&&
221 con
->http
.hostaddr
->ipv6
.sin6_addr
.s6_addr32
[0] == 0 &&
222 con
->http
.hostaddr
->ipv6
.sin6_addr
.s6_addr32
[1] == 0 &&
223 ntohl(con
->http
.hostaddr
->ipv6
.sin6_addr
.s6_addr32
[2]) == 0xffff)
224 con
->http
.hostaddr
->ipv6
.sin6_addr
.s6_addr32
[2] = 0;
225 #endif /* AF_INET6 */
228 * Check the number of clients on the same address...
231 for (count
= 0, tempcon
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
233 tempcon
= (cupsd_client_t
*)cupsArrayNext(Clients
))
234 if (httpAddrEqual(tempcon
->http
.hostaddr
, con
->http
.hostaddr
))
237 if (count
>= MaxClientsPerHost
)
241 if (count
>= MaxClientsPerHost
)
243 if ((time(NULL
) - last_dos
) >= 60)
245 last_dos
= time(NULL
);
246 cupsdLogMessage(CUPSD_LOG_WARN
,
247 "Possible DoS attack - more than %d clients connecting "
250 httpAddrString(con
->http
.hostaddr
, con
->http
.hostname
,
251 sizeof(con
->http
.hostname
)));
255 closesocket(con
->http
.fd
);
265 * Get the hostname or format the IP address as needed...
268 if (httpAddrLocalhost(con
->http
.hostaddr
))
271 * Map accesses from the loopback interface to "localhost"...
274 strlcpy(con
->http
.hostname
, "localhost", sizeof(con
->http
.hostname
));
275 hostname
= con
->http
.hostname
;
280 * Map accesses from the same host to the server name.
284 hostname
= httpAddrLookup(con
->http
.hostaddr
, con
->http
.hostname
,
285 sizeof(con
->http
.hostname
));
289 httpAddrString(con
->http
.hostaddr
, con
->http
.hostname
,
290 sizeof(con
->http
.hostname
));
294 if (hostname
== NULL
&& HostNameLookups
== 2)
297 * Can't have an unresolved IP address with double-lookups enabled...
301 closesocket(con
->http
.fd
);
306 cupsdLogMessage(CUPSD_LOG_WARN
,
307 "Name lookup failed - connection from %s closed!",
314 if (HostNameLookups
== 2)
317 * Do double lookups as needed...
320 if ((addrlist
= httpAddrGetList(con
->http
.hostname
, AF_UNSPEC
, NULL
))
324 * See if the hostname maps to the same IP address...
327 for (addr
= addrlist
; addr
; addr
= addr
->next
)
328 if (httpAddrEqual(con
->http
.hostaddr
, &(addr
->addr
)))
334 httpAddrFreeList(addrlist
);
339 * Can't have a hostname that doesn't resolve to the same IP address
340 * with double-lookups enabled...
344 closesocket(con
->http
.fd
);
349 cupsdLogMessage(CUPSD_LOG_WARN
,
350 "IP lookup failed - connection from %s closed!",
359 * See if the connection is denied by TCP wrappers...
362 request_init(&wrap_req
, RQ_DAEMON
, "cupsd", RQ_FILE
, con
->http
.fd
, NULL
);
365 if (!hosts_access(&wrap_req
))
368 closesocket(con
->http
.fd
);
373 cupsdLogMessage(CUPSD_LOG_WARN
,
374 "Connection from %s refused by /etc/hosts.allow and "
375 "/etc/hosts.deny rules.", con
->http
.hostname
);
379 #endif /* HAVE_TCPD_H */
382 if (con
->http
.hostaddr
->addr
.sa_family
== AF_LOCAL
)
385 socklen_t peersize
; /* Size of peer credentials */
386 pid_t peerpid
; /* Peer process ID */
387 char name
[256]; /* Name of process */
389 peersize
= sizeof(peerpid
);
390 if (!getsockopt(con
->http
.fd
, SOL_LOCAL
, LOCAL_PEERPID
, &peerpid
,
393 if (!proc_name(peerpid
, name
, sizeof(name
)))
394 cupsdLogMessage(CUPSD_LOG_DEBUG
,
395 "[Client %d] Accepted from %s (Domain ???[%d])",
396 con
->http
.fd
, con
->http
.hostname
, (int)peerpid
);
398 cupsdLogMessage(CUPSD_LOG_DEBUG
,
399 "[Client %d] Accepted from %s (Domain %s[%d])",
400 con
->http
.fd
, con
->http
.hostname
, name
, (int)peerpid
);
403 # endif /* __APPLE__ */
405 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[Client %d] Accepted from %s (Domain)",
406 con
->http
.fd
, con
->http
.hostname
);
409 #endif /* AF_LOCAL */
410 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[Client %d] Accepted from %s:%d (IPv%d)",
411 con
->http
.fd
, con
->http
.hostname
,
412 httpAddrPort(con
->http
.hostaddr
),
413 _httpAddrFamily(con
->http
.hostaddr
) == AF_INET
? 4 : 6);
416 * Get the local address the client connected to...
419 addrlen
= sizeof(temp
);
420 if (getsockname(con
->http
.fd
, (struct sockaddr
*)&temp
, &addrlen
))
422 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to get local address - %s",
425 strlcpy(con
->servername
, "localhost", sizeof(con
->servername
));
426 con
->serverport
= LocalPort
;
429 else if (_httpAddrFamily(&temp
) == AF_LOCAL
)
431 strlcpy(con
->servername
, "localhost", sizeof(con
->servername
));
432 con
->serverport
= LocalPort
;
434 #endif /* AF_LOCAL */
437 if (httpAddrLocalhost(&temp
))
438 strlcpy(con
->servername
, "localhost", sizeof(con
->servername
));
439 else if (HostNameLookups
|| RemotePort
)
440 httpAddrLookup(&temp
, con
->servername
, sizeof(con
->servername
));
442 httpAddrString(&temp
, con
->servername
, sizeof(con
->servername
));
444 con
->serverport
= httpAddrPort(&(lis
->address
));
448 * Add the connection to the array of active clients...
451 cupsArrayAdd(Clients
, con
);
454 * Using TCP_NODELAY improves responsiveness, especially on systems with a slow
455 * loopback interface. Since we write large buffers when sending print files
456 * and requests there shouldn't be any performance penalty for this...
460 setsockopt(con
->http
.fd
, IPPROTO_TCP
, TCP_NODELAY
, &val
, sizeof(val
));
463 * Close this file on all execs...
466 fcntl(con
->http
.fd
, F_SETFD
, fcntl(con
->http
.fd
, F_GETFD
) | FD_CLOEXEC
);
469 * Add the socket to the server select.
472 cupsdAddSelect(con
->http
.fd
, (cupsd_selfunc_t
)cupsdReadClient
, NULL
, con
);
475 * Temporarily suspend accept()'s until we lose a client...
478 if (cupsArrayCount(Clients
) == MaxClients
)
479 cupsdPauseListening();
483 * See if we are connecting on a secure port...
486 if (lis
->encryption
== HTTP_ENCRYPT_ALWAYS
)
489 * https connection; go secure...
492 con
->http
.encryption
= HTTP_ENCRYPT_ALWAYS
;
494 if (!cupsdStartTLS(con
))
495 cupsdCloseClient(con
);
499 #endif /* HAVE_SSL */
504 * 'cupsdCloseAllClients()' - Close all remote clients immediately.
508 cupsdCloseAllClients(void)
510 cupsd_client_t
*con
; /* Current client */
513 cupsdLogMessage(CUPSD_LOG_DEBUG2
, "cupsdCloseAllClients() Clients=%d",
514 cupsArrayCount(Clients
));
516 for (con
= (cupsd_client_t
*)cupsArrayFirst(Clients
);
518 con
= (cupsd_client_t
*)cupsArrayNext(Clients
))
519 if (cupsdCloseClient(con
))
520 cupsdCloseClient(con
);
525 * 'cupsdCloseClient()' - Close a remote client.
528 int /* O - 1 if partial close, 0 if fully closed */
529 cupsdCloseClient(cupsd_client_t
*con
) /* I - Client to close */
531 int partial
; /* Do partial close for SSL? */
533 #elif defined(HAVE_GNUTLS)
534 # elif defined(HAVE_CDSASSL)
535 #endif /* HAVE_LIBSSL */
538 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[Client %d] Closing connection.",
542 * Flush pending writes before closing...
545 httpFlushWrite(HTTP(con
));
551 * Shutdown encryption as needed...
560 #endif /* HAVE_SSL */
562 if (con
->pipe_pid
!= 0)
565 * Stop any CGI process...
568 cupsdEndProcess(con
->pipe_pid
, 1);
574 cupsdRemoveSelect(con
->file
);
581 * Close the socket and clear the file from the input set for select()...
584 if (con
->http
.fd
>= 0)
586 cupsArrayRemove(ActiveClients
, con
);
592 * Only do a partial close so that the encrypted client gets everything.
595 shutdown(con
->http
.fd
, 0);
596 cupsdAddSelect(con
->http
.fd
, (cupsd_selfunc_t
)cupsdReadClient
, NULL
, con
);
601 * Shut the socket down fully...
604 cupsdRemoveSelect(con
->http
.fd
);
616 if (con
->http
.input_set
)
617 free(con
->http
.input_set
);
619 httpClearCookie(HTTP(con
));
620 httpClearFields(HTTP(con
));
622 cupsdClearString(&con
->filename
);
623 cupsdClearString(&con
->command
);
624 cupsdClearString(&con
->options
);
625 cupsdClearString(&con
->query_string
);
629 ippDelete(con
->request
);
635 ippDelete(con
->response
);
636 con
->response
= NULL
;
641 cupsLangFree(con
->language
);
642 con
->language
= NULL
;
645 #ifdef HAVE_AUTHORIZATION_H
648 AuthorizationFree(con
->authref
, kAuthorizationFlagDefaults
);
651 #endif /* HAVE_AUTHORIZATION_H */
654 * Re-enable new client connections if we are going back under the
658 if (cupsArrayCount(Clients
) == MaxClients
)
659 cupsdResumeListening();
662 * Compact the list of clients as necessary...
665 cupsArrayRemove(Clients
, con
);
675 * 'cupsdFlushHeader()' - Flush the header fields to the client.
678 int /* I - Bytes written or -1 on error */
679 cupsdFlushHeader(cupsd_client_t
*con
) /* I - Client to flush to */
681 int bytes
= httpFlushWrite(HTTP(con
));
683 con
->http
.data_encoding
= HTTP_ENCODING_LENGTH
;
690 * 'cupsdReadClient()' - Read data from a client.
694 cupsdReadClient(cupsd_client_t
*con
) /* I - Client to read from */
696 char line
[32768], /* Line from client... */
697 operation
[64], /* Operation code from socket */
698 version
[64], /* HTTP version number string */
699 locale
[64], /* Locale */
700 *ptr
; /* Pointer into strings */
701 int major
, minor
; /* HTTP version numbers */
702 http_status_t status
; /* Transfer status */
703 ipp_state_t ipp_state
; /* State of IPP transfer */
704 int bytes
; /* Number of bytes to POST */
705 char *filename
; /* Name of file for GET/HEAD */
706 char buf
[1024]; /* Buffer for real filename */
707 struct stat filestats
; /* File information */
708 mime_type_t
*type
; /* MIME type of file */
709 cupsd_printer_t
*p
; /* Printer */
710 static unsigned request_id
= 0; /* Request ID for temp files */
713 status
= HTTP_CONTINUE
;
715 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
716 "[Client %d] cupsdReadClient "
720 "data_encoding=HTTP_ENCODING_%s, "
721 "data_remaining=" CUPS_LLFMT
", "
724 con
->http
.fd
, con
->http
.error
, con
->http
.used
,
725 http_states
[con
->http
.state
+ 1],
726 con
->http
.data_encoding
== HTTP_ENCODING_CHUNKED
?
727 "CHUNKED" : "LENGTH",
728 CUPS_LLCAST con
->http
.data_remaining
,
730 con
->request
? ipp_states
[con
->request
->state
] : "",
737 * Automatically check for a SSL/TLS handshake...
742 if (recv(con
->http
.fd
, buf
, 1, MSG_PEEK
) == 1 &&
743 (!buf
[0] || !strchr("DGHOPT", buf
[0])))
746 * Encrypt this connection...
749 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
750 "[Client %d] Saw first byte %02X, auto-negotiating "
751 "SSL/TLS session.", con
->http
.fd
, buf
[0] & 255);
753 if (!cupsdStartTLS(con
))
754 cupsdCloseClient(con
);
759 #endif /* HAVE_SSL */
761 switch (con
->http
.state
)
763 case HTTP_STATE_WAITING
:
765 * See if we've received a request line...
768 if (httpGets(line
, sizeof(line
) - 1, HTTP(con
)) == NULL
)
770 if (con
->http
.error
&& con
->http
.error
!= EPIPE
)
771 cupsdLogMessage(CUPSD_LOG_DEBUG
,
772 "[Client %d] HTTP_STATE_WAITING Closing for error %d "
773 "(%s)", con
->http
.fd
, con
->http
.error
,
774 strerror(con
->http
.error
));
776 cupsdLogMessage(CUPSD_LOG_DEBUG
,
777 "[Client %d] HTTP_STATE_WAITING Closing on EOF",
780 cupsdCloseClient(con
);
785 * Ignore blank request lines...
792 * Clear other state variables...
795 httpClearFields(HTTP(con
));
797 con
->http
.activity
= time(NULL
);
798 con
->http
.version
= HTTP_1_0
;
799 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
800 con
->http
.data_encoding
= HTTP_ENCODING_LENGTH
;
801 con
->http
.data_remaining
= 0;
802 con
->http
._data_remaining
= 0;
803 con
->operation
= HTTP_STATE_WAITING
;
808 con
->username
[0] = '\0';
809 con
->password
[0] = '\0';
812 cupsdClearString(&con
->command
);
813 cupsdClearString(&con
->options
);
814 cupsdClearString(&con
->query_string
);
818 ippDelete(con
->request
);
824 ippDelete(con
->response
);
825 con
->response
= NULL
;
830 cupsLangFree(con
->language
);
831 con
->language
= NULL
;
837 #endif /* HAVE_GSSAPI */
840 * Grab the request line...
843 switch (sscanf(line
, "%63s%1023s%63s", operation
, con
->uri
, version
))
848 cupsdLogMessage(CUPSD_LOG_ERROR
,
849 "[Client %d] Bad request line \"%s\" from %s.",
851 _httpEncodeURI(buf
, line
, sizeof(buf
)),
853 cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
);
854 cupsdCloseClient(con
);
858 con
->http
.version
= HTTP_0_9
;
861 if (sscanf(version
, "HTTP/%d.%d", &major
, &minor
) != 2)
863 cupsdLogMessage(CUPSD_LOG_ERROR
,
864 "[Client %d] Bad request line \"%s\" from %s.",
866 _httpEncodeURI(buf
, line
, sizeof(buf
)),
868 cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
);
869 cupsdCloseClient(con
);
875 con
->http
.version
= (http_version_t
)(major
* 100 + minor
);
876 if (con
->http
.version
== HTTP_1_1
&& KeepAlive
)
877 con
->http
.keep_alive
= HTTP_KEEPALIVE_ON
;
879 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
883 cupsdLogMessage(CUPSD_LOG_ERROR
,
884 "[Client %d] Unsupported request line \"%s\" "
885 "from %s.", con
->http
.fd
,
886 _httpEncodeURI(buf
, line
, sizeof(buf
)),
888 cupsdSendError(con
, HTTP_NOT_SUPPORTED
, CUPSD_AUTH_NONE
);
889 cupsdCloseClient(con
);
896 * Handle full URLs in the request line...
899 if (strcmp(con
->uri
, "*"))
901 char scheme
[HTTP_MAX_URI
], /* Method/scheme */
902 userpass
[HTTP_MAX_URI
], /* Username:password */
903 hostname
[HTTP_MAX_URI
], /* Hostname */
904 resource
[HTTP_MAX_URI
]; /* Resource path */
905 int port
; /* Port number */
909 * Separate the URI into its components...
912 httpSeparateURI(HTTP_URI_CODING_MOST
, con
->uri
,
913 scheme
, sizeof(scheme
),
914 userpass
, sizeof(userpass
),
915 hostname
, sizeof(hostname
), &port
,
916 resource
, sizeof(resource
));
919 * Only allow URIs with the servername, localhost, or an IP
923 if (strcmp(scheme
, "file") &&
924 _cups_strcasecmp(hostname
, ServerName
) &&
925 _cups_strcasecmp(hostname
, "localhost") &&
926 !isdigit(hostname
[0]) && hostname
[0] != '[')
929 * Nope, we don't do proxies...
932 cupsdLogMessage(CUPSD_LOG_ERROR
,
933 "[Client %d] Bad URI \"%s\" in request.",
934 con
->http
.fd
, con
->uri
);
935 cupsdSendError(con
, HTTP_METHOD_NOT_ALLOWED
, CUPSD_AUTH_NONE
);
936 cupsdCloseClient(con
);
941 * Copy the resource portion back into the URI; both resource and
942 * con->uri are HTTP_MAX_URI bytes in size...
945 strlcpy(con
->uri
, resource
, sizeof(con
->uri
));
949 * Process the request...
952 if (!strcmp(operation
, "GET"))
953 con
->http
.state
= HTTP_STATE_GET
;
954 else if (!strcmp(operation
, "PUT"))
955 con
->http
.state
= HTTP_STATE_PUT
;
956 else if (!strcmp(operation
, "POST"))
957 con
->http
.state
= HTTP_STATE_POST
;
958 else if (!strcmp(operation
, "DELETE"))
959 con
->http
.state
= HTTP_STATE_DELETE
;
960 else if (!strcmp(operation
, "TRACE"))
961 con
->http
.state
= HTTP_STATE_TRACE
;
962 else if (!strcmp(operation
, "OPTIONS"))
963 con
->http
.state
= HTTP_STATE_OPTIONS
;
964 else if (!strcmp(operation
, "HEAD"))
965 con
->http
.state
= HTTP_STATE_HEAD
;
968 cupsdLogMessage(CUPSD_LOG_ERROR
,
969 "[Client %d] Bad operation \"%s\".", con
->http
.fd
,
971 cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
);
972 cupsdCloseClient(con
);
976 gettimeofday(&(con
->start
), NULL
);
977 con
->operation
= con
->http
.state
;
979 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[Client %d] %s %s HTTP/%d.%d",
980 con
->http
.fd
, operation
, con
->uri
,
981 con
->http
.version
/ 100, con
->http
.version
% 100);
983 con
->http
.status
= HTTP_OK
;
985 if (!cupsArrayFind(ActiveClients
, con
))
987 cupsArrayAdd(ActiveClients
, con
);
991 case HTTP_STATE_OPTIONS
:
992 case HTTP_STATE_DELETE
:
993 case HTTP_STATE_GET
:
994 case HTTP_STATE_HEAD
:
995 case HTTP_STATE_POST
:
996 case HTTP_STATE_PUT
:
997 case HTTP_STATE_TRACE
:
999 * Parse incoming parameters until the status changes...
1002 while ((status
= httpUpdate(HTTP(con
))) == HTTP_CONTINUE
)
1003 if (!data_ready(con
))
1006 if (status
!= HTTP_OK
&& status
!= HTTP_CONTINUE
)
1008 if (con
->http
.error
&& con
->http
.error
!= EPIPE
)
1009 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1010 "[Client %d] Closing for error %d (%s) while "
1012 con
->http
.fd
, con
->http
.error
,
1013 strerror(con
->http
.error
));
1015 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1016 "[Client %d] Closing on EOF while reading headers.",
1019 cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
);
1020 cupsdCloseClient(con
);
1026 if (!data_ready(con
) && recv(con
->http
.fd
, buf
, 1, MSG_PEEK
) < 1)
1029 * Connection closed...
1032 cupsdLogMessage(CUPSD_LOG_DEBUG
,
1033 "[Client %d] Closing on EOF", con
->http
.fd
);
1034 cupsdCloseClient(con
);
1037 break; /* Anti-compiler-warning-code */
1041 * Handle new transfers...
1044 if (status
== HTTP_OK
)
1046 if (con
->http
.fields
[HTTP_FIELD_ACCEPT_LANGUAGE
][0])
1049 * Figure out the locale from the Accept-Language and Content-Type
1053 if ((ptr
= strchr(con
->http
.fields
[HTTP_FIELD_ACCEPT_LANGUAGE
],
1057 if ((ptr
= strchr(con
->http
.fields
[HTTP_FIELD_ACCEPT_LANGUAGE
],
1061 if ((ptr
= strstr(con
->http
.fields
[HTTP_FIELD_CONTENT_TYPE
],
1062 "charset=")) != NULL
)
1065 * Combine language and charset, and trim any extra params in the
1069 snprintf(locale
, sizeof(locale
), "%s.%s",
1070 con
->http
.fields
[HTTP_FIELD_ACCEPT_LANGUAGE
], ptr
+ 8);
1072 if ((ptr
= strchr(locale
, ',')) != NULL
)
1076 snprintf(locale
, sizeof(locale
), "%s.UTF-8",
1077 con
->http
.fields
[HTTP_FIELD_ACCEPT_LANGUAGE
]);
1079 con
->language
= cupsLangGet(locale
);
1082 con
->language
= cupsLangGet(DefaultLocale
);
1084 cupsdAuthorize(con
);
1086 if (!_cups_strncasecmp(con
->http
.fields
[HTTP_FIELD_CONNECTION
],
1087 "Keep-Alive", 10) && KeepAlive
)
1088 con
->http
.keep_alive
= HTTP_KEEPALIVE_ON
;
1089 else if (!_cups_strncasecmp(con
->http
.fields
[HTTP_FIELD_CONNECTION
],
1091 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
1093 if (!con
->http
.fields
[HTTP_FIELD_HOST
][0] &&
1094 con
->http
.version
>= HTTP_1_1
)
1097 * HTTP/1.1 and higher require the "Host:" field...
1100 if (!cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
))
1102 cupsdLogMessage(CUPSD_LOG_ERROR
,
1103 "[Client %d] Missing Host: field in request.",
1105 cupsdCloseClient(con
);
1109 else if (!valid_host(con
))
1112 * Access to localhost must use "localhost" or the corresponding IPv4
1113 * or IPv6 values in the Host: field.
1116 cupsdLogMessage(CUPSD_LOG_ERROR
,
1117 "[Client %d] Request from \"%s\" using invalid Host: "
1118 "field \"%s\"", con
->http
.fd
, con
->http
.hostname
,
1119 con
->http
.fields
[HTTP_FIELD_HOST
]);
1121 if (!cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
))
1123 cupsdCloseClient(con
);
1127 else if (con
->operation
== HTTP_STATE_OPTIONS
)
1130 * Do OPTIONS command...
1133 if (con
->best
&& con
->best
->type
!= CUPSD_AUTH_NONE
)
1135 if (!cupsdSendHeader(con
, HTTP_UNAUTHORIZED
, NULL
, CUPSD_AUTH_NONE
))
1137 cupsdCloseClient(con
);
1142 if (!_cups_strcasecmp(con
->http
.fields
[HTTP_FIELD_CONNECTION
], "Upgrade") &&
1143 con
->http
.tls
== NULL
)
1147 * Do encryption stuff...
1150 if (!cupsdSendHeader(con
, HTTP_SWITCHING_PROTOCOLS
, NULL
, CUPSD_AUTH_NONE
))
1152 cupsdCloseClient(con
);
1156 httpPrintf(HTTP(con
), "Connection: Upgrade\r\n");
1157 httpPrintf(HTTP(con
), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
1158 httpPrintf(HTTP(con
), "Content-Length: 0\r\n");
1159 httpPrintf(HTTP(con
), "\r\n");
1161 if (cupsdFlushHeader(con
) < 0)
1163 cupsdCloseClient(con
);
1167 if (!cupsdStartTLS(con
))
1169 cupsdCloseClient(con
);
1173 if (!cupsdSendError(con
, HTTP_NOT_IMPLEMENTED
, CUPSD_AUTH_NONE
))
1175 cupsdCloseClient(con
);
1178 #endif /* HAVE_SSL */
1181 if (!cupsdSendHeader(con
, HTTP_OK
, NULL
, CUPSD_AUTH_NONE
))
1183 cupsdCloseClient(con
);
1187 httpPrintf(HTTP(con
), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n");
1188 httpPrintf(HTTP(con
), "Content-Length: 0\r\n");
1189 httpPrintf(HTTP(con
), "\r\n");
1191 if (cupsdFlushHeader(con
) < 0)
1193 cupsdCloseClient(con
);
1197 else if (!is_path_absolute(con
->uri
))
1200 * Protect against malicious users!
1203 cupsdLogMessage(CUPSD_LOG_ERROR
,
1204 "[Client %d] Request for non-absolute resource \"%s\".",
1205 con
->http
.fd
, con
->uri
);
1207 if (!cupsdSendError(con
, HTTP_FORBIDDEN
, CUPSD_AUTH_NONE
))
1209 cupsdCloseClient(con
);
1215 if (!_cups_strcasecmp(con
->http
.fields
[HTTP_FIELD_CONNECTION
],
1216 "Upgrade") && con
->http
.tls
== NULL
)
1220 * Do encryption stuff...
1223 if (!cupsdSendHeader(con
, HTTP_SWITCHING_PROTOCOLS
, NULL
,
1226 cupsdCloseClient(con
);
1230 httpPrintf(HTTP(con
), "Connection: Upgrade\r\n");
1231 httpPrintf(HTTP(con
), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n");
1232 httpPrintf(HTTP(con
), "Content-Length: 0\r\n");
1233 httpPrintf(HTTP(con
), "\r\n");
1235 if (cupsdFlushHeader(con
) < 0)
1237 cupsdCloseClient(con
);
1241 if (!cupsdStartTLS(con
))
1243 cupsdCloseClient(con
);
1247 if (!cupsdSendError(con
, HTTP_NOT_IMPLEMENTED
, CUPSD_AUTH_NONE
))
1249 cupsdCloseClient(con
);
1252 #endif /* HAVE_SSL */
1255 if ((status
= cupsdIsAuthorized(con
, NULL
)) != HTTP_OK
)
1257 cupsdSendError(con
, status
, CUPSD_AUTH_NONE
);
1258 cupsdCloseClient(con
);
1262 if (con
->http
.expect
&&
1263 (con
->operation
== HTTP_STATE_POST
|| con
->operation
== HTTP_STATE_PUT
))
1265 if (con
->http
.expect
== HTTP_CONTINUE
)
1268 * Send 100-continue header...
1271 if (!cupsdSendHeader(con
, HTTP_CONTINUE
, NULL
, CUPSD_AUTH_NONE
))
1273 cupsdCloseClient(con
);
1280 * Send 417-expectation-failed header...
1283 if (!cupsdSendHeader(con
, HTTP_EXPECTATION_FAILED
, NULL
,
1286 cupsdCloseClient(con
);
1290 httpPrintf(HTTP(con
), "Content-Length: 0\r\n");
1291 httpPrintf(HTTP(con
), "\r\n");
1293 if (cupsdFlushHeader(con
) < 0)
1295 cupsdCloseClient(con
);
1301 switch (con
->http
.state
)
1303 case HTTP_STATE_GET_SEND
:
1304 if ((!strncmp(con
->uri
, "/ppd/", 5) ||
1305 !strncmp(con
->uri
, "/printers/", 10)) &&
1306 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".ppd"))
1309 * Send PPD file - get the real printer name since printer
1310 * names are not case sensitive but filenames can be...
1313 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".ppd" */
1315 if (!strncmp(con
->uri
, "/ppd/", 5))
1316 p
= cupsdFindPrinter(con
->uri
+ 5);
1318 p
= cupsdFindPrinter(con
->uri
+ 10);
1322 snprintf(con
->uri
, sizeof(con
->uri
), "/ppd/%s.ppd", p
->name
);
1326 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1328 cupsdCloseClient(con
);
1335 else if ((!strncmp(con
->uri
, "/icons/", 7) ||
1336 !strncmp(con
->uri
, "/printers/", 10) ||
1337 !strncmp(con
->uri
, "/classes/", 9)) &&
1338 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".png"))
1341 * Send icon file - get the real queue name since queue names are
1342 * not case sensitive but filenames can be...
1345 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".png" */
1347 if (!strncmp(con
->uri
, "/icons/", 7))
1348 p
= cupsdFindPrinter(con
->uri
+ 7);
1349 else if (!strncmp(con
->uri
, "/printers/", 10))
1350 p
= cupsdFindPrinter(con
->uri
+ 10);
1352 p
= cupsdFindClass(con
->uri
+ 9);
1355 snprintf(con
->uri
, sizeof(con
->uri
), "/icons/%s.png", p
->name
);
1358 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1360 cupsdCloseClient(con
);
1367 else if (!WebInterface
)
1370 * Web interface is disabled. Show an appropriate message...
1373 if (!cupsdSendError(con
, HTTP_WEBIF_DISABLED
, CUPSD_AUTH_NONE
))
1375 cupsdCloseClient(con
);
1382 if ((!strncmp(con
->uri
, "/admin", 6) &&
1383 strncmp(con
->uri
, "/admin/conf/", 12) &&
1384 strncmp(con
->uri
, "/admin/log/", 11)) ||
1385 !strncmp(con
->uri
, "/printers", 9) ||
1386 !strncmp(con
->uri
, "/classes", 8) ||
1387 !strncmp(con
->uri
, "/help", 5) ||
1388 !strncmp(con
->uri
, "/jobs", 5))
1391 * Send CGI output...
1394 if (!strncmp(con
->uri
, "/admin", 6))
1396 cupsdSetStringf(&con
->command
, "%s/cgi-bin/admin.cgi",
1399 cupsdSetString(&con
->options
, strchr(con
->uri
+ 6, '?'));
1401 else if (!strncmp(con
->uri
, "/printers", 9))
1403 cupsdSetStringf(&con
->command
, "%s/cgi-bin/printers.cgi",
1406 if (con
->uri
[9] && con
->uri
[10])
1407 cupsdSetString(&con
->options
, con
->uri
+ 9);
1409 cupsdSetString(&con
->options
, NULL
);
1411 else if (!strncmp(con
->uri
, "/classes", 8))
1413 cupsdSetStringf(&con
->command
, "%s/cgi-bin/classes.cgi",
1416 if (con
->uri
[8] && con
->uri
[9])
1417 cupsdSetString(&con
->options
, con
->uri
+ 8);
1419 cupsdSetString(&con
->options
, NULL
);
1421 else if (!strncmp(con
->uri
, "/jobs", 5))
1423 cupsdSetStringf(&con
->command
, "%s/cgi-bin/jobs.cgi",
1426 if (con
->uri
[5] && con
->uri
[6])
1427 cupsdSetString(&con
->options
, con
->uri
+ 5);
1429 cupsdSetString(&con
->options
, NULL
);
1433 cupsdSetStringf(&con
->command
, "%s/cgi-bin/help.cgi",
1436 if (con
->uri
[5] && con
->uri
[6])
1437 cupsdSetString(&con
->options
, con
->uri
+ 5);
1439 cupsdSetString(&con
->options
, NULL
);
1442 if (!cupsdSendCommand(con
, con
->command
, con
->options
, 0))
1444 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1446 cupsdCloseClient(con
);
1451 cupsdLogRequest(con
, HTTP_OK
);
1453 if (con
->http
.version
<= HTTP_1_0
)
1454 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
1456 else if ((!strncmp(con
->uri
, "/admin/conf/", 12) &&
1457 (strchr(con
->uri
+ 12, '/') ||
1458 strlen(con
->uri
) == 12)) ||
1459 (!strncmp(con
->uri
, "/admin/log/", 11) &&
1460 (strchr(con
->uri
+ 11, '/') ||
1461 strlen(con
->uri
) == 11)))
1464 * GET can only be done to configuration files directly under
1468 cupsdLogMessage(CUPSD_LOG_ERROR
,
1469 "Request for subdirectory \"%s\"!", con
->uri
);
1471 if (!cupsdSendError(con
, HTTP_FORBIDDEN
, CUPSD_AUTH_NONE
))
1473 cupsdCloseClient(con
);
1485 if ((filename
= get_file(con
, &filestats
, buf
,
1486 sizeof(buf
))) == NULL
)
1488 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1490 cupsdCloseClient(con
);
1497 type
= mimeFileType(MimeDatabase
, filename
, NULL
, NULL
);
1499 if (is_cgi(con
, filename
, &filestats
, type
))
1502 * Note: con->command and con->options were set by
1506 if (!cupsdSendCommand(con
, con
->command
, con
->options
, 0))
1508 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1510 cupsdCloseClient(con
);
1515 cupsdLogRequest(con
, HTTP_OK
);
1517 if (con
->http
.version
<= HTTP_1_0
)
1518 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
1522 if (!check_if_modified(con
, &filestats
))
1524 if (!cupsdSendError(con
, HTTP_NOT_MODIFIED
, CUPSD_AUTH_NONE
))
1526 cupsdCloseClient(con
);
1533 strlcpy(line
, "text/plain", sizeof(line
));
1535 snprintf(line
, sizeof(line
), "%s/%s", type
->super
, type
->type
);
1537 if (!write_file(con
, HTTP_OK
, filename
, line
, &filestats
))
1539 cupsdCloseClient(con
);
1546 case HTTP_STATE_POST_RECV
:
1548 * See if the POST request includes a Content-Length field, and if
1549 * so check the length against any limits that are set...
1552 if (con
->http
.fields
[HTTP_FIELD_CONTENT_LENGTH
][0] &&
1553 MaxRequestSize
> 0 &&
1554 con
->http
.data_remaining
> MaxRequestSize
)
1557 * Request too large...
1560 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1562 cupsdCloseClient(con
);
1568 else if (con
->http
.data_remaining
< 0 ||
1569 (!con
->http
.fields
[HTTP_FIELD_CONTENT_LENGTH
][0] &&
1570 con
->http
.data_encoding
== HTTP_ENCODING_LENGTH
))
1573 * Negative content lengths are invalid!
1576 if (!cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
))
1578 cupsdCloseClient(con
);
1586 * See what kind of POST request this is; for IPP requests the
1587 * content-type field will be "application/ipp"...
1590 if (!strcmp(con
->http
.fields
[HTTP_FIELD_CONTENT_TYPE
],
1592 con
->request
= ippNew();
1593 else if (!WebInterface
)
1596 * Web interface is disabled. Show an appropriate message...
1599 if (!cupsdSendError(con
, HTTP_WEBIF_DISABLED
, CUPSD_AUTH_NONE
))
1601 cupsdCloseClient(con
);
1607 else if ((!strncmp(con
->uri
, "/admin", 6) &&
1608 strncmp(con
->uri
, "/admin/conf/", 12) &&
1609 strncmp(con
->uri
, "/admin/log/", 11)) ||
1610 !strncmp(con
->uri
, "/printers", 9) ||
1611 !strncmp(con
->uri
, "/classes", 8) ||
1612 !strncmp(con
->uri
, "/help", 5) ||
1613 !strncmp(con
->uri
, "/jobs", 5))
1619 if (!strncmp(con
->uri
, "/admin", 6))
1621 cupsdSetStringf(&con
->command
, "%s/cgi-bin/admin.cgi",
1624 cupsdSetString(&con
->options
, strchr(con
->uri
+ 6, '?'));
1626 else if (!strncmp(con
->uri
, "/printers", 9))
1628 cupsdSetStringf(&con
->command
, "%s/cgi-bin/printers.cgi",
1631 if (con
->uri
[9] && con
->uri
[10])
1632 cupsdSetString(&con
->options
, con
->uri
+ 9);
1634 cupsdSetString(&con
->options
, NULL
);
1636 else if (!strncmp(con
->uri
, "/classes", 8))
1638 cupsdSetStringf(&con
->command
, "%s/cgi-bin/classes.cgi",
1641 if (con
->uri
[8] && con
->uri
[9])
1642 cupsdSetString(&con
->options
, con
->uri
+ 8);
1644 cupsdSetString(&con
->options
, NULL
);
1646 else if (!strncmp(con
->uri
, "/jobs", 5))
1648 cupsdSetStringf(&con
->command
, "%s/cgi-bin/jobs.cgi",
1651 if (con
->uri
[5] && con
->uri
[6])
1652 cupsdSetString(&con
->options
, con
->uri
+ 5);
1654 cupsdSetString(&con
->options
, NULL
);
1658 cupsdSetStringf(&con
->command
, "%s/cgi-bin/help.cgi",
1661 if (con
->uri
[5] && con
->uri
[6])
1662 cupsdSetString(&con
->options
, con
->uri
+ 5);
1664 cupsdSetString(&con
->options
, NULL
);
1667 if (con
->http
.version
<= HTTP_1_0
)
1668 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
1676 if ((filename
= get_file(con
, &filestats
, buf
,
1677 sizeof(buf
))) == NULL
)
1679 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1681 cupsdCloseClient(con
);
1688 type
= mimeFileType(MimeDatabase
, filename
, NULL
, NULL
);
1690 if (!is_cgi(con
, filename
, &filestats
, type
))
1693 * Only POST to CGI's...
1696 if (!cupsdSendError(con
, HTTP_UNAUTHORIZED
, CUPSD_AUTH_NONE
))
1698 cupsdCloseClient(con
);
1705 case HTTP_STATE_PUT_RECV
:
1707 * Validate the resource name...
1710 if (strcmp(con
->uri
, "/admin/conf/cupsd.conf"))
1713 * PUT can only be done to the cupsd.conf file...
1716 cupsdLogMessage(CUPSD_LOG_ERROR
,
1717 "[Client %d] Disallowed PUT request for \"%s\".",
1718 con
->http
.fd
, con
->uri
);
1720 if (!cupsdSendError(con
, HTTP_FORBIDDEN
, CUPSD_AUTH_NONE
))
1722 cupsdCloseClient(con
);
1730 * See if the PUT request includes a Content-Length field, and if
1731 * so check the length against any limits that are set...
1734 if (con
->http
.fields
[HTTP_FIELD_CONTENT_LENGTH
][0] &&
1735 MaxRequestSize
> 0 &&
1736 con
->http
.data_remaining
> MaxRequestSize
)
1739 * Request too large...
1742 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1744 cupsdCloseClient(con
);
1750 else if (con
->http
.data_remaining
< 0)
1753 * Negative content lengths are invalid!
1756 if (!cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
))
1758 cupsdCloseClient(con
);
1766 * Open a temporary file to hold the request...
1769 cupsdSetStringf(&con
->filename
, "%s/%08x", RequestRoot
,
1771 con
->file
= open(con
->filename
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0640);
1775 cupsdLogMessage(CUPSD_LOG_ERROR
,
1776 "[Client %d] Unable to create request file "
1777 "\"%s\": %s", con
->http
.fd
, con
->filename
,
1780 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
1782 cupsdCloseClient(con
);
1787 fchmod(con
->file
, 0640);
1788 fchown(con
->file
, RunUser
, Group
);
1789 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
1792 case HTTP_STATE_DELETE
:
1793 case HTTP_STATE_TRACE
:
1794 cupsdSendError(con
, HTTP_NOT_IMPLEMENTED
, CUPSD_AUTH_NONE
);
1795 cupsdCloseClient(con
);
1798 case HTTP_STATE_HEAD
:
1799 if (!strncmp(con
->uri
, "/printers/", 10) &&
1800 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".ppd"))
1803 * Send PPD file - get the real printer name since printer
1804 * names are not case sensitive but filenames can be...
1807 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".ppd" */
1809 if ((p
= cupsdFindPrinter(con
->uri
+ 10)) != NULL
)
1810 snprintf(con
->uri
, sizeof(con
->uri
), "/ppd/%s.ppd", p
->name
);
1813 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1815 cupsdCloseClient(con
);
1822 else if (!strncmp(con
->uri
, "/printers/", 10) &&
1823 !strcmp(con
->uri
+ strlen(con
->uri
) - 4, ".png"))
1826 * Send PNG file - get the real printer name since printer
1827 * names are not case sensitive but filenames can be...
1830 con
->uri
[strlen(con
->uri
) - 4] = '\0'; /* Drop ".ppd" */
1832 if ((p
= cupsdFindPrinter(con
->uri
+ 10)) != NULL
)
1833 snprintf(con
->uri
, sizeof(con
->uri
), "/icons/%s.png", p
->name
);
1836 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
1838 cupsdCloseClient(con
);
1845 else if (!WebInterface
)
1847 if (!cupsdSendHeader(con
, HTTP_OK
, line
, CUPSD_AUTH_NONE
))
1849 cupsdCloseClient(con
);
1853 if (httpPrintf(HTTP(con
), "\r\n") < 0)
1855 cupsdCloseClient(con
);
1859 if (cupsdFlushHeader(con
) < 0)
1861 cupsdCloseClient(con
);
1865 con
->http
.state
= HTTP_STATE_WAITING
;
1866 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
1871 if ((!strncmp(con
->uri
, "/admin", 6) &&
1872 strncmp(con
->uri
, "/admin/conf/", 12) &&
1873 strncmp(con
->uri
, "/admin/log/", 11)) ||
1874 !strncmp(con
->uri
, "/printers", 9) ||
1875 !strncmp(con
->uri
, "/classes", 8) ||
1876 !strncmp(con
->uri
, "/help", 5) ||
1877 !strncmp(con
->uri
, "/jobs", 5))
1883 if (!cupsdSendHeader(con
, HTTP_OK
, "text/html", CUPSD_AUTH_NONE
))
1885 cupsdCloseClient(con
);
1889 if (httpPrintf(HTTP(con
), "\r\n") < 0)
1891 cupsdCloseClient(con
);
1895 if (cupsdFlushHeader(con
) < 0)
1897 cupsdCloseClient(con
);
1901 cupsdLogRequest(con
, HTTP_OK
);
1903 else if ((!strncmp(con
->uri
, "/admin/conf/", 12) &&
1904 (strchr(con
->uri
+ 12, '/') ||
1905 strlen(con
->uri
) == 12)) ||
1906 (!strncmp(con
->uri
, "/admin/log/", 11) &&
1907 (strchr(con
->uri
+ 11, '/') ||
1908 strlen(con
->uri
) == 11)))
1911 * HEAD can only be done to configuration files under
1915 cupsdLogMessage(CUPSD_LOG_ERROR
,
1916 "[Client %d] Request for subdirectory \"%s\".",
1917 con
->http
.fd
, con
->uri
);
1919 if (!cupsdSendError(con
, HTTP_FORBIDDEN
, CUPSD_AUTH_NONE
))
1921 cupsdCloseClient(con
);
1927 else if ((filename
= get_file(con
, &filestats
, buf
,
1928 sizeof(buf
))) == NULL
)
1930 if (!cupsdSendHeader(con
, HTTP_NOT_FOUND
, "text/html",
1933 cupsdCloseClient(con
);
1937 cupsdLogRequest(con
, HTTP_NOT_FOUND
);
1939 else if (!check_if_modified(con
, &filestats
))
1941 if (!cupsdSendError(con
, HTTP_NOT_MODIFIED
, CUPSD_AUTH_NONE
))
1943 cupsdCloseClient(con
);
1947 cupsdLogRequest(con
, HTTP_NOT_MODIFIED
);
1955 type
= mimeFileType(MimeDatabase
, filename
, NULL
, NULL
);
1957 strlcpy(line
, "text/plain", sizeof(line
));
1959 snprintf(line
, sizeof(line
), "%s/%s", type
->super
, type
->type
);
1961 if (!cupsdSendHeader(con
, HTTP_OK
, line
, CUPSD_AUTH_NONE
))
1963 cupsdCloseClient(con
);
1967 if (httpPrintf(HTTP(con
), "Last-Modified: %s\r\n",
1968 httpGetDateString(filestats
.st_mtime
)) < 0)
1970 cupsdCloseClient(con
);
1974 if (httpPrintf(HTTP(con
), "Content-Length: %lu\r\n",
1975 (unsigned long)filestats
.st_size
) < 0)
1977 cupsdCloseClient(con
);
1981 cupsdLogRequest(con
, HTTP_OK
);
1984 if (httpPrintf(HTTP(con
), "\r\n") < 0)
1986 cupsdCloseClient(con
);
1990 if (cupsdFlushHeader(con
) < 0)
1992 cupsdCloseClient(con
);
1996 con
->http
.state
= HTTP_STATE_WAITING
;
1997 DEBUG_puts("cupsdReadClient: Set state to HTTP_STATE_WAITING "
2002 break; /* Anti-compiler-warning-code */
2008 * Handle any incoming data...
2011 switch (con
->http
.state
)
2013 case HTTP_STATE_PUT_RECV
:
2016 if ((bytes
= httpRead2(HTTP(con
), line
, sizeof(line
))) < 0)
2018 if (con
->http
.error
&& con
->http
.error
!= EPIPE
)
2019 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2020 "[Client %d] HTTP_STATE_PUT_RECV Closing for error "
2021 "%d (%s)", con
->http
.fd
, con
->http
.error
,
2022 strerror(con
->http
.error
));
2024 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2025 "[Client %d] HTTP_STATE_PUT_RECV Closing on EOF",
2028 cupsdCloseClient(con
);
2033 con
->bytes
+= bytes
;
2035 if (write(con
->file
, line
, bytes
) < bytes
)
2037 cupsdLogMessage(CUPSD_LOG_ERROR
,
2038 "[Client %d] Unable to write %d bytes to "
2039 "\"%s\": %s", con
->http
.fd
, bytes
, con
->filename
,
2044 unlink(con
->filename
);
2045 cupsdClearString(&con
->filename
);
2047 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
2049 cupsdCloseClient(con
);
2055 while (con
->http
.state
== HTTP_STATE_PUT_RECV
&& data_ready(con
));
2057 if (con
->http
.state
== HTTP_STATE_STATUS
)
2060 * End of file, see how big it is...
2063 fstat(con
->file
, &filestats
);
2068 if (filestats
.st_size
> MaxRequestSize
&&
2072 * Request is too big; remove it and send an error...
2075 unlink(con
->filename
);
2076 cupsdClearString(&con
->filename
);
2078 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
2080 cupsdCloseClient(con
);
2086 * Install the configuration file...
2089 status
= install_cupsd_conf(con
);
2092 * Return the status to the client...
2095 if (!cupsdSendError(con
, status
, CUPSD_AUTH_NONE
))
2097 cupsdCloseClient(con
);
2103 case HTTP_STATE_POST_RECV
:
2106 if (con
->request
&& con
->file
< 0)
2109 * Grab any request data from the connection...
2112 if ((ipp_state
= ippRead(&(con
->http
), con
->request
)) == IPP_ERROR
)
2114 cupsdLogMessage(CUPSD_LOG_ERROR
,
2115 "[Client %d] IPP read error: %s", con
->http
.fd
,
2116 cupsLastErrorString());
2118 cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
);
2119 cupsdCloseClient(con
);
2122 else if (ipp_state
!= IPP_DATA
)
2124 if (con
->http
.state
== HTTP_STATE_POST_SEND
)
2126 cupsdSendError(con
, HTTP_BAD_REQUEST
, CUPSD_AUTH_NONE
);
2127 cupsdCloseClient(con
);
2135 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[Client %d] %d.%d %s %d",
2136 con
->http
.fd
, con
->request
->request
.op
.version
[0],
2137 con
->request
->request
.op
.version
[1],
2138 ippOpString(con
->request
->request
.op
.operation_id
),
2139 con
->request
->request
.op
.request_id
);
2140 con
->bytes
+= ippLength(con
->request
);
2144 if (con
->file
< 0 && con
->http
.state
!= HTTP_STATE_POST_SEND
)
2147 * Create a file as needed for the request data...
2150 cupsdSetStringf(&con
->filename
, "%s/%08x", RequestRoot
,
2152 con
->file
= open(con
->filename
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0640);
2156 cupsdLogMessage(CUPSD_LOG_ERROR
,
2157 "[Client %d] Unable to create request file "
2158 "\"%s\": %s", con
->http
.fd
, con
->filename
,
2161 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
2163 cupsdCloseClient(con
);
2168 fchmod(con
->file
, 0640);
2169 fchown(con
->file
, RunUser
, Group
);
2170 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
2173 if (con
->http
.state
!= HTTP_STATE_POST_SEND
)
2175 if (!httpWait(HTTP(con
), 0))
2177 else if ((bytes
= httpRead2(HTTP(con
), line
, sizeof(line
))) < 0)
2179 if (con
->http
.error
&& con
->http
.error
!= EPIPE
)
2180 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2181 "[Client %d] HTTP_STATE_POST_SEND Closing for "
2182 "error %d (%s)", con
->http
.fd
, con
->http
.error
,
2183 strerror(con
->http
.error
));
2185 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2186 "[Client %d] HTTP_STATE_POST_SEND Closing on EOF",
2189 cupsdCloseClient(con
);
2194 con
->bytes
+= bytes
;
2196 if (write(con
->file
, line
, bytes
) < bytes
)
2198 cupsdLogMessage(CUPSD_LOG_ERROR
,
2199 "[Client %d] Unable to write %d bytes to "
2200 "\"%s\": %s", con
->http
.fd
, bytes
,
2201 con
->filename
, strerror(errno
));
2205 unlink(con
->filename
);
2206 cupsdClearString(&con
->filename
);
2208 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
,
2211 cupsdCloseClient(con
);
2216 else if (con
->http
.state
== HTTP_STATE_POST_RECV
)
2218 else if (con
->http
.state
!= HTTP_STATE_POST_SEND
)
2220 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2221 "[Client %d] Closing on unexpected state %s.",
2222 con
->http
.fd
, http_states
[con
->http
.state
+ 1]);
2223 cupsdCloseClient(con
);
2228 while (con
->http
.state
== HTTP_STATE_POST_RECV
&& data_ready(con
));
2230 if (con
->http
.state
== HTTP_STATE_POST_SEND
)
2234 fstat(con
->file
, &filestats
);
2239 if (filestats
.st_size
> MaxRequestSize
&&
2243 * Request is too big; remove it and send an error...
2246 unlink(con
->filename
);
2247 cupsdClearString(&con
->filename
);
2252 * Delete any IPP request data...
2255 ippDelete(con
->request
);
2256 con
->request
= NULL
;
2259 if (!cupsdSendError(con
, HTTP_REQUEST_TOO_LARGE
, CUPSD_AUTH_NONE
))
2261 cupsdCloseClient(con
);
2265 else if (filestats
.st_size
== 0)
2268 * Don't allow empty file...
2271 unlink(con
->filename
);
2272 cupsdClearString(&con
->filename
);
2277 if (!cupsdSendCommand(con
, con
->command
, con
->options
, 0))
2279 if (!cupsdSendError(con
, HTTP_NOT_FOUND
, CUPSD_AUTH_NONE
))
2281 cupsdCloseClient(con
);
2286 cupsdLogRequest(con
, HTTP_OK
);
2292 cupsdProcessIPPRequest(con
);
2296 unlink(con
->filename
);
2297 cupsdClearString(&con
->filename
);
2306 break; /* Anti-compiler-warning-code */
2309 if (con
->http
.state
== HTTP_STATE_WAITING
)
2311 if (!con
->http
.keep_alive
)
2313 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2314 "[Client %d] Closing because Keep-Alive disabled",
2316 cupsdCloseClient(con
);
2320 cupsArrayRemove(ActiveClients
, con
);
2321 cupsdSetBusyState();
2328 * 'cupsdSendCommand()' - Send output from a command via HTTP.
2331 int /* O - 1 on success, 0 on failure */
2333 cupsd_client_t
*con
, /* I - Client connection */
2334 char *command
, /* I - Command to run */
2335 char *options
, /* I - Command-line options */
2336 int root
) /* I - Run as root? */
2338 int fd
; /* Standard input file descriptor */
2343 fd
= open(con
->filename
, O_RDONLY
);
2347 cupsdLogMessage(CUPSD_LOG_ERROR
,
2348 "[Client %d] Unable to open \"%s\" for reading: %s",
2349 con
->http
.fd
, con
->filename
? con
->filename
: "/dev/null",
2354 fcntl(fd
, F_SETFD
, fcntl(fd
, F_GETFD
) | FD_CLOEXEC
);
2359 con
->pipe_pid
= pipe_command(con
, fd
, &(con
->file
), command
, options
, root
);
2364 cupsdLogMessage(CUPSD_LOG_INFO
, "[Client %d] Started \"%s\" (pid=%d)",
2365 con
->http
.fd
, command
, con
->pipe_pid
);
2367 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[Client %d] file=%d", con
->http
.fd
,
2370 if (con
->pipe_pid
== 0)
2373 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
2375 cupsdAddSelect(con
->file
, (cupsd_selfunc_t
)write_pipe
, NULL
, con
);
2377 con
->sent_header
= 0;
2378 con
->file_ready
= 0;
2379 con
->got_fields
= 0;
2380 con
->header_used
= 0;
2387 * 'cupsdSendError()' - Send an error message via HTTP.
2390 int /* O - 1 if successful, 0 otherwise */
2391 cupsdSendError(cupsd_client_t
*con
, /* I - Connection */
2392 http_status_t code
, /* I - Error code */
2393 int auth_type
)/* I - Authentication type */
2395 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
2396 "[Client %d] cupsdSendError code=%d, auth_type=%d",
2397 con
->http
.fd
, code
, auth_type
);
2401 * Force client to upgrade for authentication if that is how the
2402 * server is configured...
2405 if (code
== HTTP_UNAUTHORIZED
&&
2406 DefaultEncryption
== HTTP_ENCRYPT_REQUIRED
&&
2407 _cups_strcasecmp(con
->http
.hostname
, "localhost") &&
2410 code
= HTTP_UPGRADE_REQUIRED
;
2412 #endif /* HAVE_SSL */
2415 * Put the request in the access_log file...
2418 cupsdLogRequest(con
, code
);
2421 * To work around bugs in some proxies, don't use Keep-Alive for some
2424 * Kerberos authentication doesn't work without Keep-Alive, so
2425 * never disable it in that case.
2428 if (code
>= HTTP_BAD_REQUEST
&& con
->http
.auth_type
!= CUPSD_AUTH_NEGOTIATE
)
2429 con
->http
.keep_alive
= HTTP_KEEPALIVE_OFF
;
2432 * Send an error message back to the client. If the error code is a
2433 * 400 or 500 series, make sure the message contains some text, too!
2436 if (!cupsdSendHeader(con
, code
, NULL
, auth_type
))
2440 if (code
== HTTP_UPGRADE_REQUIRED
)
2441 if (httpPrintf(HTTP(con
), "Connection: Upgrade\r\n") < 0)
2444 if (httpPrintf(HTTP(con
), "Upgrade: TLS/1.2,TLS/1.1,TLS/1.0\r\n") < 0)
2446 #endif /* HAVE_SSL */
2448 if (con
->http
.version
>= HTTP_1_1
&&
2449 con
->http
.keep_alive
== HTTP_KEEPALIVE_OFF
)
2451 if (httpPrintf(HTTP(con
), "Connection: close\r\n") < 0)
2455 if (code
>= HTTP_BAD_REQUEST
)
2458 * Send a human-readable error message.
2461 char message
[4096], /* Message for user */
2462 urltext
[1024], /* URL redirection text */
2463 redirect
[1024]; /* Redirection link */
2464 const char *text
; /* Status-specific text */
2469 if (code
== HTTP_UNAUTHORIZED
)
2470 text
= _cupsLangString(con
->language
,
2471 _("Enter your username and password or the "
2472 "root username and password to access this "
2473 "page. If you are using Kerberos authentication, "
2474 "make sure you have a valid Kerberos ticket."));
2475 else if (code
== HTTP_UPGRADE_REQUIRED
)
2479 snprintf(urltext
, sizeof(urltext
),
2480 _cupsLangString(con
->language
,
2481 _("You must access this page using the URL "
2482 "<A HREF=\"https://%s:%d%s\">"
2483 "https://%s:%d%s</A>.")),
2484 con
->servername
, con
->serverport
, con
->uri
,
2485 con
->servername
, con
->serverport
, con
->uri
);
2487 snprintf(redirect
, sizeof(redirect
),
2488 "<META HTTP-EQUIV=\"Refresh\" "
2489 "CONTENT=\"3;URL=https://%s:%d%s\">\n",
2490 con
->servername
, con
->serverport
, con
->uri
);
2492 else if (code
== HTTP_WEBIF_DISABLED
)
2493 text
= _cupsLangString(con
->language
,
2494 _("The web interface is currently disabled. Run "
2495 "\"cupsctl WebInterface=yes\" to enable it."));
2499 snprintf(message
, sizeof(message
),
2500 "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" "
2501 "\"http://www.w3.org/TR/html4/loose.dtd\">\n"
2504 "\t<META HTTP-EQUIV=\"Content-Type\" "
2505 "CONTENT=\"text/html; charset=utf-8\">\n"
2506 "\t<TITLE>%s - " CUPS_SVERSION
"</TITLE>\n"
2507 "\t<LINK REL=\"STYLESHEET\" TYPE=\"text/css\" "
2508 "HREF=\"/cups.css\">\n"
2516 httpStatus(code
), redirect
, httpStatus(code
), text
);
2518 if (httpPrintf(HTTP(con
), "Content-Type: text/html; charset=utf-8\r\n") < 0)
2520 if (httpPrintf(HTTP(con
), "Content-Length: %d\r\n",
2521 (int)strlen(message
)) < 0)
2523 if (httpPrintf(HTTP(con
), "\r\n") < 0)
2525 if (httpPrintf(HTTP(con
), "%s", message
) < 0)
2528 else if (httpPrintf(HTTP(con
), "\r\n") < 0)
2531 if (cupsdFlushHeader(con
) < 0)
2534 con
->http
.state
= HTTP_STATE_WAITING
;
2536 DEBUG_puts("cupsdSendError: Set state to HTTP_STATE_WAITING.");
2543 * 'cupsdSendHeader()' - Send an HTTP request.
2546 int /* O - 1 on success, 0 on failure */
2548 cupsd_client_t
*con
, /* I - Client to send to */
2549 http_status_t code
, /* I - HTTP status code */
2550 char *type
, /* I - MIME type of document */
2551 int auth_type
) /* I - Type of authentication */
2553 char auth_str
[1024]; /* Authorization string */
2557 * Send the HTTP status header...
2560 if (code
== HTTP_CONTINUE
)
2563 * 100-continue doesn't send any headers...
2566 return (httpPrintf(HTTP(con
), "HTTP/%d.%d 100 Continue\r\n\r\n",
2567 con
->http
.version
/ 100, con
->http
.version
% 100) > 0);
2569 else if (code
== HTTP_WEBIF_DISABLED
)
2572 * Treat our special "web interface is disabled" status as "200 OK" for web
2579 httpFlushWrite(HTTP(con
));
2581 con
->http
.data_encoding
= HTTP_ENCODING_FIELDS
;
2583 if (httpPrintf(HTTP(con
), "HTTP/%d.%d %d %s\r\n", con
->http
.version
/ 100,
2584 con
->http
.version
% 100, code
, httpStatus(code
)) < 0)
2586 if (httpPrintf(HTTP(con
), "Date: %s\r\n", httpGetDateString(time(NULL
))) < 0)
2589 if (httpPrintf(HTTP(con
), "Server: %s\r\n", ServerHeader
) < 0)
2591 if (con
->http
.keep_alive
&& con
->http
.version
>= HTTP_1_0
)
2593 if (httpPrintf(HTTP(con
), "Connection: Keep-Alive\r\n") < 0)
2595 if (httpPrintf(HTTP(con
), "Keep-Alive: timeout=%d\r\n",
2596 KeepAliveTimeout
) < 0)
2599 if (code
== HTTP_METHOD_NOT_ALLOWED
)
2600 if (httpPrintf(HTTP(con
), "Allow: GET, HEAD, OPTIONS, POST, PUT\r\n") < 0)
2603 if (code
== HTTP_UNAUTHORIZED
)
2605 if (auth_type
== CUPSD_AUTH_NONE
)
2607 if (!con
->best
|| con
->best
->type
<= CUPSD_AUTH_NONE
)
2608 auth_type
= cupsdDefaultAuthType();
2610 auth_type
= con
->best
->type
;
2615 if (auth_type
== CUPSD_AUTH_BASIC
|| auth_type
== CUPSD_AUTH_BASICDIGEST
)
2616 strlcpy(auth_str
, "Basic realm=\"CUPS\"", sizeof(auth_str
));
2617 else if (auth_type
== CUPSD_AUTH_DIGEST
)
2618 snprintf(auth_str
, sizeof(auth_str
), "Digest realm=\"CUPS\", nonce=\"%s\"",
2619 con
->http
.hostname
);
2621 else if (auth_type
== CUPSD_AUTH_NEGOTIATE
)
2622 strlcpy(auth_str
, "Negotiate", sizeof(auth_str
));
2623 #endif /* HAVE_GSSAPI */
2625 if (con
->best
&& auth_type
!= CUPSD_AUTH_NEGOTIATE
&&
2626 !_cups_strcasecmp(con
->http
.hostname
, "localhost"))
2629 * Add a "trc" (try root certification) parameter for local non-Kerberos
2630 * requests when the request requires system group membership - then the
2631 * client knows the root certificate can/should be used.
2633 * Also, for OS X we also look for @AUTHKEY and add an "authkey"
2634 * parameter as needed...
2637 char *name
, /* Current user name */
2638 *auth_key
; /* Auth key buffer */
2639 size_t auth_size
; /* Size of remaining buffer */
2641 auth_key
= auth_str
+ strlen(auth_str
);
2642 auth_size
= sizeof(auth_str
) - (auth_key
- auth_str
);
2644 for (name
= (char *)cupsArrayFirst(con
->best
->names
);
2646 name
= (char *)cupsArrayNext(con
->best
->names
))
2648 #ifdef HAVE_AUTHORIZATION_H
2649 if (!_cups_strncasecmp(name
, "@AUTHKEY(", 9))
2651 snprintf(auth_key
, auth_size
, ", authkey=\"%s\"", name
+ 9);
2652 /* end parenthesis is stripped in conf.c */
2656 #endif /* HAVE_AUTHORIZATION_H */
2657 if (!_cups_strcasecmp(name
, "@SYSTEM"))
2659 #ifdef HAVE_AUTHORIZATION_H
2660 if (SystemGroupAuthKey
)
2661 snprintf(auth_key
, auth_size
,
2663 SystemGroupAuthKey
);
2666 strlcpy(auth_key
, ", trc=\"y\"", auth_size
);
2667 #endif /* HAVE_AUTHORIZATION_H */
2675 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2676 "[Client %d] WWW-Authenticate: %s", con
->http
.fd
,
2679 if (httpPrintf(HTTP(con
), "WWW-Authenticate: %s\r\n", auth_str
) < 0)
2684 if (con
->language
&& strcmp(con
->language
->language
, "C"))
2686 if (httpPrintf(HTTP(con
), "Content-Language: %s\r\n",
2687 con
->language
->language
) < 0)
2693 if (!strcmp(type
, "text/html"))
2695 if (httpPrintf(HTTP(con
),
2696 "Content-Type: text/html; charset=utf-8\r\n") < 0)
2699 else if (httpPrintf(HTTP(con
), "Content-Type: %s\r\n", type
) < 0)
2708 * 'cupsdUpdateCGI()' - Read status messages from CGI scripts and programs.
2712 cupsdUpdateCGI(void)
2714 char *ptr
, /* Pointer to end of line in buffer */
2715 message
[1024]; /* Pointer to message text */
2716 int loglevel
; /* Log level for message */
2719 while ((ptr
= cupsdStatBufUpdate(CGIStatusBuffer
, &loglevel
,
2720 message
, sizeof(message
))) != NULL
)
2722 if (loglevel
== CUPSD_LOG_INFO
)
2723 cupsdLogMessage(CUPSD_LOG_INFO
, "%s", message
);
2725 if (!strchr(CGIStatusBuffer
->buffer
, '\n'))
2729 if (ptr
== NULL
&& !CGIStatusBuffer
->bufused
)
2732 * Fatal error on pipe - should never happen!
2735 cupsdLogMessage(CUPSD_LOG_CRIT
,
2736 "cupsdUpdateCGI: error reading from CGI error pipe - %s",
2743 * 'cupsdWriteClient()' - Write data to a client as needed.
2747 cupsdWriteClient(cupsd_client_t
*con
) /* I - Client connection */
2749 int bytes
, /* Number of bytes written */
2750 field_col
; /* Current column */
2751 char *bufptr
, /* Pointer into buffer */
2752 *bufend
; /* Pointer to end of buffer */
2753 ipp_state_t ipp_state
; /* IPP state value */
2756 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
2757 "[Client %d] cupsdWriteClient "
2761 "data_encoding=HTTP_ENCODING_%s, "
2762 "data_remaining=" CUPS_LLFMT
", "
2766 con
->http
.fd
, con
->http
.error
, con
->http
.used
,
2767 http_states
[con
->http
.state
+ 1],
2768 con
->http
.data_encoding
== HTTP_ENCODING_CHUNKED
?
2769 "CHUNKED" : "LENGTH",
2770 CUPS_LLCAST con
->http
.data_remaining
,
2772 con
->response
? ipp_states
[con
->response
->state
] : "",
2773 con
->pipe_pid
, con
->file
);
2775 if (con
->http
.state
!= HTTP_STATE_GET_SEND
&&
2776 con
->http
.state
!= HTTP_STATE_POST_SEND
)
2779 * If we get called in the wrong state, then something went wrong with the
2780 * connection and we need to shut it down...
2783 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2784 "[Client %d] Closing on unexpected HTTP state %s.",
2785 con
->http
.fd
, http_states
[con
->http
.state
+ 1]);
2786 cupsdCloseClient(con
);
2793 * Make sure we select on the CGI output...
2796 cupsdAddSelect(con
->file
, (cupsd_selfunc_t
)write_pipe
, NULL
, con
);
2798 if (!con
->file_ready
)
2801 * Try again later when there is CGI output available...
2804 cupsdRemoveSelect(con
->http
.fd
);
2808 con
->file_ready
= 0;
2811 if (con
->response
&& con
->response
->state
!= IPP_DATA
)
2813 ipp_state
= ippWrite(HTTP(con
), con
->response
);
2814 bytes
= ipp_state
!= IPP_ERROR
&&
2815 (con
->file
>= 0 || ipp_state
!= IPP_DATA
);
2817 else if ((bytes
= read(con
->file
, con
->header
+ con
->header_used
,
2818 sizeof(con
->header
) - con
->header_used
)) > 0)
2820 con
->header_used
+= bytes
;
2822 if (con
->pipe_pid
&& !con
->got_fields
)
2825 * Inspect the data for Content-Type and other fields.
2828 for (bufptr
= con
->header
, bufend
= con
->header
+ con
->header_used
,
2830 !con
->got_fields
&& bufptr
< bufend
;
2833 if (*bufptr
== '\n')
2836 * Send line to client...
2839 if (bufptr
> con
->header
&& bufptr
[-1] == '\r')
2843 cupsdLogMessage(CUPSD_LOG_DEBUG
, "Script header: %s", con
->header
);
2845 if (!con
->sent_header
)
2848 * Handle redirection and CGI status codes...
2851 if (!_cups_strncasecmp(con
->header
, "Location:", 9))
2853 if (!cupsdSendHeader(con
, HTTP_SEE_OTHER
, NULL
, CUPSD_AUTH_NONE
))
2855 cupsdCloseClient(con
);
2859 con
->sent_header
= 2;
2861 if (httpPrintf(HTTP(con
), "Content-Length: 0\r\n") < 0)
2864 else if (!_cups_strncasecmp(con
->header
, "Status:", 7))
2866 cupsdSendError(con
, (http_status_t
)atoi(con
->header
+ 7),
2868 con
->sent_header
= 2;
2872 if (!cupsdSendHeader(con
, HTTP_OK
, NULL
, CUPSD_AUTH_NONE
))
2874 cupsdCloseClient(con
);
2878 con
->sent_header
= 1;
2880 if (con
->http
.version
== HTTP_1_1
)
2882 if (httpPrintf(HTTP(con
), "Transfer-Encoding: chunked\r\n") < 0)
2888 if (_cups_strncasecmp(con
->header
, "Status:", 7))
2889 httpPrintf(HTTP(con
), "%s\r\n", con
->header
);
2895 con
->header_used
-= bufptr
- con
->header
;
2897 if (con
->header_used
> 0)
2898 memmove(con
->header
, bufptr
, con
->header_used
);
2900 bufptr
= con
->header
- 1;
2903 * See if the line was empty...
2908 con
->got_fields
= 1;
2910 if (cupsdFlushHeader(con
) < 0)
2912 cupsdCloseClient(con
);
2916 if (con
->http
.version
== HTTP_1_1
)
2917 con
->http
.data_encoding
= HTTP_ENCODING_CHUNKED
;
2922 else if (*bufptr
!= '\r')
2926 if (!con
->got_fields
)
2928 con
->http
.activity
= time(NULL
);
2933 if (con
->header_used
> 0)
2935 if (httpWrite2(HTTP(con
), con
->header
, con
->header_used
) < 0)
2937 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2938 "[Client %d] Closing for error %d (%s)",
2939 con
->http
.fd
, con
->http
.error
,
2940 strerror(con
->http
.error
));
2941 cupsdCloseClient(con
);
2945 if (con
->http
.data_encoding
== HTTP_ENCODING_CHUNKED
)
2946 httpFlushWrite(HTTP(con
));
2948 con
->bytes
+= con
->header_used
;
2950 if (con
->http
.state
== HTTP_STATE_WAITING
)
2953 bytes
= con
->header_used
;
2955 con
->header_used
= 0;
2960 (con
->http
.state
!= HTTP_STATE_GET_SEND
&& con
->http
.state
!= HTTP_STATE_POST_SEND
))
2962 if (!con
->sent_header
&& con
->pipe_pid
)
2963 cupsdSendError(con
, HTTP_SERVER_ERROR
, CUPSD_AUTH_NONE
);
2966 cupsdLogRequest(con
, HTTP_OK
);
2968 httpFlushWrite(HTTP(con
));
2970 if (con
->http
.data_encoding
== HTTP_ENCODING_CHUNKED
&& con
->sent_header
== 1)
2972 if (httpWrite2(HTTP(con
), "", 0) < 0)
2974 cupsdLogMessage(CUPSD_LOG_DEBUG
,
2975 "[Client %d] Closing for error %d (%s)",
2976 con
->http
.fd
, con
->http
.error
,
2977 strerror(con
->http
.error
));
2978 cupsdCloseClient(con
);
2984 con
->http
.state
= HTTP_STATE_WAITING
;
2986 cupsdAddSelect(con
->http
.fd
, (cupsd_selfunc_t
)cupsdReadClient
, NULL
, con
);
2990 cupsdRemoveSelect(con
->file
);
2993 cupsdEndProcess(con
->pipe_pid
, 0);
3002 unlink(con
->filename
);
3003 cupsdClearString(&con
->filename
);
3008 ippDelete(con
->request
);
3009 con
->request
= NULL
;
3014 ippDelete(con
->response
);
3015 con
->response
= NULL
;
3018 cupsdClearString(&con
->command
);
3019 cupsdClearString(&con
->options
);
3020 cupsdClearString(&con
->query_string
);
3022 if (!con
->http
.keep_alive
)
3024 cupsdLogMessage(CUPSD_LOG_DEBUG
,
3025 "[Client %d] Closing because Keep-Alive disabled.",
3027 cupsdCloseClient(con
);
3032 cupsArrayRemove(ActiveClients
, con
);
3033 cupsdSetBusyState();
3037 con
->http
.activity
= time(NULL
);
3042 * 'check_if_modified()' - Decode an "If-Modified-Since" line.
3045 static int /* O - 1 if modified since */
3047 cupsd_client_t
*con
, /* I - Client connection */
3048 struct stat
*filestats
) /* I - File information */
3050 char *ptr
; /* Pointer into field */
3051 time_t date
; /* Time/date value */
3052 off_t size
; /* Size/length value */
3057 ptr
= con
->http
.fields
[HTTP_FIELD_IF_MODIFIED_SINCE
];
3062 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3063 "[Client %d] check_if_modified "
3064 "filestats=%p(" CUPS_LLFMT
", %d)) If-Modified-Since=\"%s\"",
3065 con
->http
.fd
, filestats
, CUPS_LLCAST filestats
->st_size
,
3066 (int)filestats
->st_mtime
, ptr
);
3068 while (*ptr
!= '\0')
3070 while (isspace(*ptr
) || *ptr
== ';')
3073 if (_cups_strncasecmp(ptr
, "length=", 7) == 0)
3076 size
= strtoll(ptr
, NULL
, 10);
3078 while (isdigit(*ptr
))
3081 else if (isalpha(*ptr
))
3083 date
= httpGetDateTime(ptr
);
3084 while (*ptr
!= '\0' && *ptr
!= ';')
3091 return ((size
!= filestats
->st_size
&& size
!= 0) ||
3092 (date
< filestats
->st_mtime
&& date
!= 0) ||
3093 (size
== 0 && date
== 0));
3098 * 'compare_clients()' - Compare two client connections.
3101 static int /* O - Result of comparison */
3102 compare_clients(cupsd_client_t
*a
, /* I - First client */
3103 cupsd_client_t
*b
, /* I - Second client */
3104 void *data
) /* I - User data (not used) */
3118 * 'data_ready()' - Check whether data is available from a client.
3121 static int /* O - 1 if data is ready, 0 otherwise */
3122 data_ready(cupsd_client_t
*con
) /* I - Client */
3124 if (con
->http
.used
> 0)
3127 else if (con
->http
.tls
)
3130 if (SSL_pending((SSL
*)(con
->http
.tls
)))
3132 # elif defined(HAVE_GNUTLS)
3133 if (gnutls_record_check_pending(con
->http
.tls
))
3135 # elif defined(HAVE_CDSASSL)
3136 size_t bytes
; /* Bytes that are available */
3138 if (!SSLGetBufferedReadSize(con
->http
.tls
, &bytes
) && bytes
> 0)
3140 # endif /* HAVE_LIBSSL */
3142 #endif /* HAVE_SSL */
3149 * 'get_file()' - Get a filename and state info.
3152 static char * /* O - Real filename */
3153 get_file(cupsd_client_t
*con
, /* I - Client connection */
3154 struct stat
*filestats
, /* O - File information */
3155 char *filename
, /* IO - Filename buffer */
3156 int len
) /* I - Buffer length */
3158 int status
; /* Status of filesystem calls */
3159 char *ptr
; /* Pointer info filename */
3160 int plen
; /* Remaining length after pointer */
3161 char language
[7]; /* Language subdirectory, if any */
3165 * Figure out the real filename...
3170 if (!strncmp(con
->uri
, "/ppd/", 5) && !strchr(con
->uri
+ 5, '/'))
3171 snprintf(filename
, len
, "%s%s", ServerRoot
, con
->uri
);
3172 else if (!strncmp(con
->uri
, "/icons/", 7) && !strchr(con
->uri
+ 7, '/'))
3174 snprintf(filename
, len
, "%s/%s", CacheDir
, con
->uri
+ 7);
3175 if (access(filename
, F_OK
) < 0)
3176 snprintf(filename
, len
, "%s/images/generic.png", DocumentRoot
);
3178 else if (!strncmp(con
->uri
, "/rss/", 5) && !strchr(con
->uri
+ 5, '/'))
3179 snprintf(filename
, len
, "%s/rss/%s", CacheDir
, con
->uri
+ 5);
3180 else if (!strncmp(con
->uri
, "/admin/conf/", 12))
3181 snprintf(filename
, len
, "%s%s", ServerRoot
, con
->uri
+ 11);
3182 else if (!strncmp(con
->uri
, "/admin/log/", 11))
3184 if (!strncmp(con
->uri
+ 11, "access_log", 10) && AccessLog
[0] == '/')
3185 strlcpy(filename
, AccessLog
, len
);
3186 else if (!strncmp(con
->uri
+ 11, "error_log", 9) && ErrorLog
[0] == '/')
3187 strlcpy(filename
, ErrorLog
, len
);
3188 else if (!strncmp(con
->uri
+ 11, "page_log", 8) && PageLog
[0] == '/')
3189 strlcpy(filename
, PageLog
, len
);
3193 else if (con
->language
)
3195 snprintf(language
, sizeof(language
), "/%s", con
->language
->language
);
3196 snprintf(filename
, len
, "%s%s%s", DocumentRoot
, language
, con
->uri
);
3199 snprintf(filename
, len
, "%s%s", DocumentRoot
, con
->uri
);
3201 if ((ptr
= strchr(filename
, '?')) != NULL
)
3205 * Grab the status for this language; if there isn't a language-specific file
3206 * then fallback to the default one...
3209 if ((status
= stat(filename
, filestats
)) != 0 && language
[0] &&
3210 strncmp(con
->uri
, "/icons/", 7) &&
3211 strncmp(con
->uri
, "/ppd/", 5) &&
3212 strncmp(con
->uri
, "/rss/", 5) &&
3213 strncmp(con
->uri
, "/admin/conf/", 12) &&
3214 strncmp(con
->uri
, "/admin/log/", 11))
3217 * Drop the country code...
3221 snprintf(filename
, len
, "%s%s%s", DocumentRoot
, language
, con
->uri
);
3223 if ((ptr
= strchr(filename
, '?')) != NULL
)
3226 if ((status
= stat(filename
, filestats
)) != 0)
3229 * Drop the language prefix and try the root directory...
3233 snprintf(filename
, len
, "%s%s", DocumentRoot
, con
->uri
);
3235 if ((ptr
= strchr(filename
, '?')) != NULL
)
3238 status
= stat(filename
, filestats
);
3243 * If we're found a directory, get the index.html file instead...
3246 if (!status
&& S_ISDIR(filestats
->st_mode
))
3249 * Make sure the URI ends with a slash...
3252 if (con
->uri
[strlen(con
->uri
) - 1] != '/')
3253 strlcat(con
->uri
, "/", sizeof(con
->uri
));
3256 * Find the directory index file, trying every language...
3261 if (status
&& language
[0])
3264 * Try a different language subset...
3268 language
[0] = '\0'; /* Strip country code */
3270 language
[0] = '\0'; /* Strip language */
3274 * Look for the index file...
3277 snprintf(filename
, len
, "%s%s%s", DocumentRoot
, language
, con
->uri
);
3279 if ((ptr
= strchr(filename
, '?')) != NULL
)
3282 ptr
= filename
+ strlen(filename
);
3283 plen
= len
- (ptr
- filename
);
3285 strlcpy(ptr
, "index.html", plen
);
3286 status
= stat(filename
, filestats
);
3291 strlcpy(ptr
, "index.class", plen
);
3292 status
= stat(filename
, filestats
);
3294 #endif /* HAVE_JAVA */
3299 strlcpy(ptr
, "index.pl", plen
);
3300 status
= stat(filename
, filestats
);
3302 #endif /* HAVE_PERL */
3307 strlcpy(ptr
, "index.php", plen
);
3308 status
= stat(filename
, filestats
);
3310 #endif /* HAVE_PHP */
3315 strlcpy(ptr
, "index.pyc", plen
);
3316 status
= stat(filename
, filestats
);
3321 strlcpy(ptr
, "index.py", plen
);
3322 status
= stat(filename
, filestats
);
3324 #endif /* HAVE_PYTHON */
3327 while (status
&& language
[0]);
3330 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3331 "[Client %d] get_file filestats=%p, filename=%p, len=%d, "
3332 "returning \"%s\".", con
->http
.fd
, filestats
, filename
, len
,
3333 status
? "(null)" : filename
);
3343 * 'install_cupsd_conf()' - Install a configuration file.
3346 static http_status_t
/* O - Status */
3347 install_cupsd_conf(cupsd_client_t
*con
) /* I - Connection */
3349 char filename
[1024]; /* Configuration filename */
3350 cups_file_t
*in
, /* Input file */
3351 *out
; /* Output file */
3352 char buffer
[16384]; /* Copy buffer */
3353 ssize_t bytes
; /* Number of bytes */
3357 * Open the request file...
3360 if ((in
= cupsFileOpen(con
->filename
, "rb")) == NULL
)
3362 cupsdLogMessage(CUPSD_LOG_ERROR
, "Unable to open request file \"%s\": %s",
3363 con
->filename
, strerror(errno
));
3364 return (HTTP_SERVER_ERROR
);
3368 * Open the new config file...
3371 if ((out
= cupsdCreateConfFile(ConfigurationFile
, ConfigFilePerm
)) == NULL
)
3374 return (HTTP_SERVER_ERROR
);
3377 cupsdLogMessage(CUPSD_LOG_INFO
, "Installing config file \"%s\"...",
3381 * Copy from the request to the new config file...
3384 while ((bytes
= cupsFileRead(in
, buffer
, sizeof(buffer
))) > 0)
3385 if (cupsFileWrite(out
, buffer
, bytes
) < bytes
)
3387 cupsdLogMessage(CUPSD_LOG_ERROR
,
3388 "Unable to copy to config file \"%s\": %s",
3389 ConfigurationFile
, strerror(errno
));
3394 snprintf(filename
, sizeof(filename
), "%s.N", ConfigurationFile
);
3395 cupsdUnlinkOrRemoveFile(filename
);
3397 return (HTTP_SERVER_ERROR
);
3401 * Close the files...
3406 if (cupsdCloseCreatedConfFile(out
, ConfigurationFile
))
3407 return (HTTP_SERVER_ERROR
);
3410 * Remove the request file...
3413 cupsdUnlinkOrRemoveFile(con
->filename
);
3414 cupsdClearString(&con
->filename
);
3417 * Set the NeedReload flag...
3420 NeedReload
= RELOAD_CUPSD
;
3421 ReloadTime
= time(NULL
);
3424 * Return that the file was created successfully...
3427 return (HTTP_CREATED
);
3432 * 'is_cgi()' - Is the resource a CGI script/program?
3435 static int /* O - 1 = CGI, 0 = file */
3436 is_cgi(cupsd_client_t
*con
, /* I - Client connection */
3437 const char *filename
, /* I - Real filename */
3438 struct stat
*filestats
, /* I - File information */
3439 mime_type_t
*type
) /* I - MIME type */
3441 const char *options
; /* Options on URL */
3445 * Get the options, if any...
3448 if ((options
= strchr(con
->uri
, '?')) != NULL
)
3451 cupsdSetStringf(&(con
->query_string
), "QUERY_STRING=%s", options
);
3455 * Check for known types...
3458 if (!type
|| _cups_strcasecmp(type
->super
, "application"))
3460 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3461 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3462 "type=%s/%s, returning 0", con
->http
.fd
, filename
,
3463 filestats
, type
? type
->super
: "unknown",
3464 type
? type
->type
: "unknown");
3468 if (!_cups_strcasecmp(type
->type
, "x-httpd-cgi") &&
3469 (filestats
->st_mode
& 0111))
3472 * "application/x-httpd-cgi" is a CGI script.
3475 cupsdSetString(&con
->command
, filename
);
3478 cupsdSetStringf(&con
->options
, " %s", options
);
3480 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3481 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3482 "type=%s/%s, returning 1", con
->http
.fd
, filename
,
3483 filestats
, type
->super
, type
->type
);
3487 else if (!_cups_strcasecmp(type
->type
, "x-httpd-java"))
3490 * "application/x-httpd-java" is a Java servlet.
3493 cupsdSetString(&con
->command
, CUPS_JAVA
);
3496 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3498 cupsdSetStringf(&con
->options
, " %s", filename
);
3500 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3501 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3502 "type=%s/%s, returning 1", con
->http
.fd
, filename
,
3503 filestats
, type
->super
, type
->type
);
3506 #endif /* HAVE_JAVA */
3508 else if (!_cups_strcasecmp(type
->type
, "x-httpd-perl"))
3511 * "application/x-httpd-perl" is a Perl page.
3514 cupsdSetString(&con
->command
, CUPS_PERL
);
3517 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3519 cupsdSetStringf(&con
->options
, " %s", filename
);
3521 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3522 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3523 "type=%s/%s, returning 1", con
->http
.fd
, filename
,
3524 filestats
, type
->super
, type
->type
);
3527 #endif /* HAVE_PERL */
3529 else if (!_cups_strcasecmp(type
->type
, "x-httpd-php"))
3532 * "application/x-httpd-php" is a PHP page.
3535 cupsdSetString(&con
->command
, CUPS_PHP
);
3538 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3540 cupsdSetStringf(&con
->options
, " %s", filename
);
3542 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3543 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3544 "type=%s/%s, returning 1", con
->http
.fd
, filename
,
3545 filestats
, type
->super
, type
->type
);
3548 #endif /* HAVE_PHP */
3550 else if (!_cups_strcasecmp(type
->type
, "x-httpd-python"))
3553 * "application/x-httpd-python" is a Python page.
3556 cupsdSetString(&con
->command
, CUPS_PYTHON
);
3559 cupsdSetStringf(&con
->options
, " %s %s", filename
, options
);
3561 cupsdSetStringf(&con
->options
, " %s", filename
);
3563 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3564 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3565 "type=%s/%s, returning 1", con
->http
.fd
, filename
,
3566 filestats
, type
->super
, type
->type
);
3569 #endif /* HAVE_PYTHON */
3571 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3572 "[Client %d] is_cgi filename=\"%s\", filestats=%p, "
3573 "type=%s/%s, returning 0", con
->http
.fd
, filename
,
3574 filestats
, type
->super
, type
->type
);
3580 * 'is_path_absolute()' - Is a path absolute and free of relative elements (i.e. "..").
3583 static int /* O - 0 if relative, 1 if absolute */
3584 is_path_absolute(const char *path
) /* I - Input path */
3587 * Check for a leading slash...
3594 * Check for "/.." in the path...
3597 while ((path
= strstr(path
, "/..")) != NULL
)
3599 if (!path
[3] || path
[3] == '/')
3606 * If we haven't found any relative paths, return 1 indicating an
3615 * 'pipe_command()' - Pipe the output of a command to the remote client.
3618 static int /* O - Process ID */
3619 pipe_command(cupsd_client_t
*con
, /* I - Client connection */
3620 int infile
, /* I - Standard input for command */
3621 int *outfile
, /* O - Standard output for command */
3622 char *command
, /* I - Command to run */
3623 char *options
, /* I - Options for command */
3624 int root
) /* I - Run as root? */
3626 int i
; /* Looping var */
3627 int pid
; /* Process ID */
3628 char *commptr
, /* Command string pointer */
3629 commch
; /* Command string character */
3630 char *uriptr
; /* URI string pointer */
3631 int fds
[2]; /* Pipe FDs */
3632 int argc
; /* Number of arguments */
3633 int envc
; /* Number of environment variables */
3634 char argbuf
[10240], /* Argument buffer */
3635 *argv
[100], /* Argument strings */
3636 *envp
[MAX_ENV
+ 20]; /* Environment variables */
3637 char auth_type
[256], /* AUTH_TYPE environment variable */
3638 content_length
[1024], /* CONTENT_LENGTH environment variable */
3639 content_type
[1024], /* CONTENT_TYPE environment variable */
3640 http_cookie
[32768], /* HTTP_COOKIE environment variable */
3641 http_referer
[1024], /* HTTP_REFERER environment variable */
3642 http_user_agent
[1024], /* HTTP_USER_AGENT environment variable */
3643 lang
[1024], /* LANG environment variable */
3644 path_info
[1024], /* PATH_INFO environment variable */
3645 remote_addr
[1024], /* REMOTE_ADDR environment variable */
3646 remote_host
[1024], /* REMOTE_HOST environment variable */
3647 remote_user
[1024], /* REMOTE_USER environment variable */
3648 script_filename
[1024], /* SCRIPT_FILENAME environment variable */
3649 script_name
[1024], /* SCRIPT_NAME environment variable */
3650 server_name
[1024], /* SERVER_NAME environment variable */
3651 server_port
[1024]; /* SERVER_PORT environment variable */
3652 ipp_attribute_t
*attr
; /* attributes-natural-language attribute */
3656 * Parse a copy of the options string, which is of the form:
3658 * argument+argument+argument
3659 * ?argument+argument+argument
3660 * param=value¶m=value
3661 * ?param=value¶m=value
3662 * /name?argument+argument+argument
3663 * /name?param=value¶m=value
3665 * If the string contains an "=" character after the initial name,
3666 * then we treat it as a HTTP GET form request and make a copy of
3667 * the remaining string for the environment variable.
3669 * The string is always parsed out as command-line arguments, to
3670 * be consistent with Apache...
3673 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
3674 "[Client %d] pipe_command infile=%d, outfile=%p, "
3675 "command=\"%s\", options=\"%s\", root=%d",
3676 con
->http
.fd
, infile
, outfile
, command
,
3677 options
? options
: "(null)", root
);
3684 if (*commptr
== ' ')
3686 strlcpy(argbuf
, commptr
, sizeof(argbuf
));
3691 if (argbuf
[0] == '/')
3694 * Found some trailing path information, set PATH_INFO...
3697 if ((commptr
= strchr(argbuf
, '?')) == NULL
)
3698 commptr
= argbuf
+ strlen(argbuf
);
3702 snprintf(path_info
, sizeof(path_info
), "PATH_INFO=%s", argbuf
);
3708 path_info
[0] = '\0';
3710 if (*commptr
== ' ')
3714 if (*commptr
== '?' && con
->operation
== HTTP_STATE_GET
&& !con
->query_string
)
3717 cupsdSetStringf(&(con
->query_string
), "QUERY_STRING=%s", commptr
);
3724 argv
[argc
++] = commptr
;
3726 for (; *commptr
&& argc
< 99; commptr
++)
3729 * Break arguments whenever we see a + or space...
3732 if (*commptr
== ' ' || *commptr
== '+')
3734 while (*commptr
== ' ' || *commptr
== '+')
3738 * If we don't have a blank string, save it as another argument...
3743 argv
[argc
] = commptr
;
3749 else if (*commptr
== '%' && isxdigit(commptr
[1] & 255) &&
3750 isxdigit(commptr
[2] & 255))
3753 * Convert the %xx notation to the individual character.
3756 if (commptr
[1] >= '0' && commptr
[1] <= '9')
3757 *commptr
= (commptr
[1] - '0') << 4;
3759 *commptr
= (tolower(commptr
[1]) - 'a' + 10) << 4;
3761 if (commptr
[2] >= '0' && commptr
[2] <= '9')
3762 *commptr
|= commptr
[2] - '0';
3764 *commptr
|= tolower(commptr
[2]) - 'a' + 10;
3766 _cups_strcpy(commptr
+ 1, commptr
+ 3);
3769 * Check for a %00 and break if that is the case...
3781 * Setup the environment variables as needed...
3784 if (con
->username
[0])
3786 snprintf(auth_type
, sizeof(auth_type
), "AUTH_TYPE=%s",
3787 httpGetField(HTTP(con
), HTTP_FIELD_AUTHORIZATION
));
3789 if ((uriptr
= strchr(auth_type
+ 10, ' ')) != NULL
)
3793 auth_type
[0] = '\0';
3796 (attr
= ippFindAttribute(con
->request
, "attributes-natural-language",
3797 IPP_TAG_LANGUAGE
)) != NULL
)
3799 switch (strlen(attr
->values
[0].string
.text
))
3803 * This is an unknown or badly formatted language code; use
3804 * the POSIX locale...
3807 strlcpy(lang
, "LANG=C", sizeof(lang
));
3812 * Just the language code (ll)...
3815 snprintf(lang
, sizeof(lang
), "LANG=%s.UTF8",
3816 attr
->values
[0].string
.text
);
3821 * Language and country code (ll-cc)...
3824 snprintf(lang
, sizeof(lang
), "LANG=%c%c_%c%c.UTF8",
3825 attr
->values
[0].string
.text
[0],
3826 attr
->values
[0].string
.text
[1],
3827 toupper(attr
->values
[0].string
.text
[3] & 255),
3828 toupper(attr
->values
[0].string
.text
[4] & 255));
3832 else if (con
->language
)
3833 snprintf(lang
, sizeof(lang
), "LANG=%s.UTF8", con
->language
->language
);
3835 strlcpy(lang
, "LANG=C", sizeof(lang
));
3837 strlcpy(remote_addr
, "REMOTE_ADDR=", sizeof(remote_addr
));
3838 httpAddrString(con
->http
.hostaddr
, remote_addr
+ 12,
3839 sizeof(remote_addr
) - 12);
3841 snprintf(remote_host
, sizeof(remote_host
), "REMOTE_HOST=%s",
3842 con
->http
.hostname
);
3844 snprintf(script_name
, sizeof(script_name
), "SCRIPT_NAME=%s", con
->uri
);
3845 if ((uriptr
= strchr(script_name
, '?')) != NULL
)
3848 snprintf(script_filename
, sizeof(script_filename
), "SCRIPT_FILENAME=%s%s",
3849 DocumentRoot
, script_name
+ 12);
3851 sprintf(server_port
, "SERVER_PORT=%d", con
->serverport
);
3853 if (con
->http
.fields
[HTTP_FIELD_HOST
][0])
3855 char *nameptr
; /* Pointer to ":port" */
3857 snprintf(server_name
, sizeof(server_name
), "SERVER_NAME=%s",
3858 con
->http
.fields
[HTTP_FIELD_HOST
]);
3859 if ((nameptr
= strrchr(server_name
, ':')) != NULL
&& !strchr(nameptr
, ']'))
3860 *nameptr
= '\0'; /* Strip trailing ":port" */
3863 snprintf(server_name
, sizeof(server_name
), "SERVER_NAME=%s",
3866 envc
= cupsdLoadEnv(envp
, (int)(sizeof(envp
) / sizeof(envp
[0])));
3869 envp
[envc
++] = auth_type
;
3871 envp
[envc
++] = lang
;
3872 envp
[envc
++] = "REDIRECT_STATUS=1";
3873 envp
[envc
++] = "GATEWAY_INTERFACE=CGI/1.1";
3874 envp
[envc
++] = server_name
;
3875 envp
[envc
++] = server_port
;
3876 envp
[envc
++] = remote_addr
;
3877 envp
[envc
++] = remote_host
;
3878 envp
[envc
++] = script_name
;
3879 envp
[envc
++] = script_filename
;
3882 envp
[envc
++] = path_info
;
3884 if (con
->username
[0])
3886 snprintf(remote_user
, sizeof(remote_user
), "REMOTE_USER=%s", con
->username
);
3888 envp
[envc
++] = remote_user
;
3891 if (con
->http
.version
== HTTP_1_1
)
3892 envp
[envc
++] = "SERVER_PROTOCOL=HTTP/1.1";
3893 else if (con
->http
.version
== HTTP_1_0
)
3894 envp
[envc
++] = "SERVER_PROTOCOL=HTTP/1.0";
3896 envp
[envc
++] = "SERVER_PROTOCOL=HTTP/0.9";
3898 if (con
->http
.cookie
)
3900 snprintf(http_cookie
, sizeof(http_cookie
), "HTTP_COOKIE=%s",
3902 envp
[envc
++] = http_cookie
;
3905 if (con
->http
.fields
[HTTP_FIELD_USER_AGENT
][0])
3907 snprintf(http_user_agent
, sizeof(http_user_agent
), "HTTP_USER_AGENT=%s",
3908 con
->http
.fields
[HTTP_FIELD_USER_AGENT
]);
3909 envp
[envc
++] = http_user_agent
;
3912 if (con
->http
.fields
[HTTP_FIELD_REFERER
][0])
3914 snprintf(http_referer
, sizeof(http_referer
), "HTTP_REFERER=%s",
3915 con
->http
.fields
[HTTP_FIELD_REFERER
]);
3916 envp
[envc
++] = http_referer
;
3919 if (con
->operation
== HTTP_STATE_GET
)
3921 envp
[envc
++] = "REQUEST_METHOD=GET";
3923 if (con
->query_string
)
3926 * Add GET form variables after ?...
3929 envp
[envc
++] = con
->query_string
;
3932 envp
[envc
++] = "QUERY_STRING=";
3936 sprintf(content_length
, "CONTENT_LENGTH=" CUPS_LLFMT
,
3937 CUPS_LLCAST con
->bytes
);
3938 snprintf(content_type
, sizeof(content_type
), "CONTENT_TYPE=%s",
3939 con
->http
.fields
[HTTP_FIELD_CONTENT_TYPE
]);
3941 envp
[envc
++] = "REQUEST_METHOD=POST";
3942 envp
[envc
++] = content_length
;
3943 envp
[envc
++] = content_type
;
3947 * Tell the CGI if we are using encryption...
3951 envp
[envc
++] = "HTTPS=ON";
3954 * Terminate the environment array...
3959 if (LogLevel
>= CUPSD_LOG_DEBUG
)
3961 for (i
= 0; i
< argc
; i
++)
3962 cupsdLogMessage(CUPSD_LOG_DEBUG
,
3963 "[CGI] argv[%d] = \"%s\"", i
, argv
[i
]);
3964 for (i
= 0; i
< envc
; i
++)
3965 cupsdLogMessage(CUPSD_LOG_DEBUG
,
3966 "[CGI] envp[%d] = \"%s\"", i
, envp
[i
]);
3970 * Create a pipe for the output...
3973 if (cupsdOpenPipe(fds
))
3975 cupsdLogMessage(CUPSD_LOG_ERROR
, "[CGI] Unable to create pipe for %s - %s",
3976 argv
[0], strerror(errno
));
3981 * Then execute the command...
3984 if (cupsdStartProcess(command
, argv
, envp
, infile
, fds
[1], CGIPipes
[1],
3985 -1, -1, root
, DefaultProfile
, NULL
, &pid
) < 0)
3988 * Error - can't fork!
3991 cupsdLogMessage(CUPSD_LOG_ERROR
, "[CGI] Unable to start %s - %s", argv
[0],
3994 cupsdClosePipe(fds
);
4000 * Fork successful - return the PID...
4003 if (con
->username
[0])
4004 cupsdAddCert(pid
, con
->username
, con
->type
);
4006 cupsdLogMessage(CUPSD_LOG_DEBUG
, "[CGI] Started %s (PID %d)", command
, pid
);
4017 * 'valid_host()' - Is the Host: field valid?
4020 static int /* O - 1 if valid, 0 if not */
4021 valid_host(cupsd_client_t
*con
) /* I - Client connection */
4023 cupsd_alias_t
*a
; /* Current alias */
4024 cupsd_netif_t
*netif
; /* Current network interface */
4025 const char *host
, /* Host field */
4026 *end
; /* End character */
4029 host
= con
->http
.fields
[HTTP_FIELD_HOST
];
4031 if (httpAddrLocalhost(con
->http
.hostaddr
))
4034 * Only allow "localhost" or the equivalent IPv4 or IPv6 numerical
4035 * addresses when accessing CUPS via the loopback interface...
4038 return (!_cups_strcasecmp(host
, "localhost") ||
4039 !_cups_strncasecmp(host
, "localhost:", 10) ||
4040 !_cups_strcasecmp(host
, "localhost.") ||
4041 !_cups_strncasecmp(host
, "localhost.:", 11) ||
4043 !_cups_strcasecmp(host
, "localhost.localdomain") ||
4044 !_cups_strncasecmp(host
, "localhost.localdomain:", 22) ||
4045 #endif /* __linux */
4046 !strcmp(host
, "127.0.0.1") ||
4047 !strncmp(host
, "127.0.0.1:", 10) ||
4048 !strcmp(host
, "[::1]") ||
4049 !strncmp(host
, "[::1]:", 6));
4052 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
4054 * Check if the hostname is something.local (Bonjour); if so, allow it.
4057 if ((end
= strrchr(host
, '.')) != NULL
&& end
> host
&&
4058 (!end
[1] || end
[1] == ':'))
4061 * "." on end, work back to second-to-last "."...
4063 for (end
--; end
> host
&& *end
!= '.'; end
--);
4066 if (end
&& (!_cups_strcasecmp(end
, ".local") ||
4067 !_cups_strncasecmp(end
, ".local:", 7) ||
4068 !_cups_strcasecmp(end
, ".local.") ||
4069 !_cups_strncasecmp(end
, ".local.:", 8)))
4071 #endif /* HAVE_DNSSD || HAVE_AVAHI */
4074 * Check if the hostname is an IP address...
4077 if (isdigit(*host
& 255) || *host
== '[')
4080 * Possible IPv4/IPv6 address...
4083 char temp
[1024], /* Temporary string */
4084 *ptr
; /* Pointer into temporary string */
4085 http_addrlist_t
*addrlist
; /* List of addresses */
4088 strlcpy(temp
, host
, sizeof(temp
));
4089 if ((ptr
= strrchr(temp
, ':')) != NULL
&& !strchr(ptr
, ']'))
4090 *ptr
= '\0'; /* Strip :port from host value */
4092 if ((addrlist
= httpAddrGetList(temp
, AF_UNSPEC
, NULL
)) != NULL
)
4095 * Good IPv4/IPv6 address...
4098 httpAddrFreeList(addrlist
);
4104 * Check for (alias) name matches...
4107 for (a
= (cupsd_alias_t
*)cupsArrayFirst(ServerAlias
);
4109 a
= (cupsd_alias_t
*)cupsArrayNext(ServerAlias
))
4112 * "ServerAlias *" allows all host values through...
4115 if (!strcmp(a
->name
, "*"))
4118 if (!_cups_strncasecmp(host
, a
->name
, a
->namelen
))
4121 * Prefix matches; check the character at the end - it must be ":", ".",
4125 end
= host
+ a
->namelen
;
4127 if (!*end
|| *end
== ':' || (*end
== '.' && (!end
[1] || end
[1] == ':')))
4132 #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI)
4133 for (a
= (cupsd_alias_t
*)cupsArrayFirst(DNSSDAlias
);
4135 a
= (cupsd_alias_t
*)cupsArrayNext(DNSSDAlias
))
4138 * "ServerAlias *" allows all host values through...
4141 if (!strcmp(a
->name
, "*"))
4144 if (!_cups_strncasecmp(host
, a
->name
, a
->namelen
))
4147 * Prefix matches; check the character at the end - it must be ":", ".",
4151 end
= host
+ a
->namelen
;
4153 if (!*end
|| *end
== ':' || (*end
== '.' && (!end
[1] || end
[1] == ':')))
4157 #endif /* HAVE_DNSSD || HAVE_AVAHI */
4160 * Check for interface hostname matches...
4163 for (netif
= (cupsd_netif_t
*)cupsArrayFirst(NetIFList
);
4165 netif
= (cupsd_netif_t
*)cupsArrayNext(NetIFList
))
4167 if (!_cups_strncasecmp(host
, netif
->hostname
, netif
->hostlen
))
4170 * Prefix matches; check the character at the end - it must be ":", ".",
4174 end
= host
+ netif
->hostlen
;
4176 if (!*end
|| *end
== ':' || (*end
== '.' && (!end
[1] || end
[1] == ':')))
4186 * 'write_file()' - Send a file via HTTP.
4189 static int /* O - 0 on failure, 1 on success */
4190 write_file(cupsd_client_t
*con
, /* I - Client connection */
4191 http_status_t code
, /* I - HTTP status */
4192 char *filename
, /* I - Filename */
4193 char *type
, /* I - File type */
4194 struct stat
*filestats
) /* O - File information */
4196 con
->file
= open(filename
, O_RDONLY
);
4198 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
4199 "[Client %d] write_file code=%d, filename=\"%s\" (%d), "
4200 "type=\"%s\", filestats=%p", con
->http
.fd
,
4201 code
, filename
, con
->file
, type
? type
: "(null)", filestats
);
4206 fcntl(con
->file
, F_SETFD
, fcntl(con
->file
, F_GETFD
) | FD_CLOEXEC
);
4210 if (!cupsdSendHeader(con
, code
, type
, CUPSD_AUTH_NONE
))
4213 if (httpPrintf(HTTP(con
), "Last-Modified: %s\r\n",
4214 httpGetDateString(filestats
->st_mtime
)) < 0)
4216 if (httpPrintf(HTTP(con
), "Content-Length: " CUPS_LLFMT
"\r\n",
4217 CUPS_LLCAST filestats
->st_size
) < 0)
4219 if (httpPrintf(HTTP(con
), "\r\n") < 0)
4222 if (cupsdFlushHeader(con
) < 0)
4225 con
->http
.data_encoding
= HTTP_ENCODING_LENGTH
;
4226 con
->http
.data_remaining
= filestats
->st_size
;
4228 if (con
->http
.data_remaining
<= INT_MAX
)
4229 con
->http
._data_remaining
= con
->http
.data_remaining
;
4231 con
->http
._data_remaining
= INT_MAX
;
4233 cupsdAddSelect(con
->http
.fd
, (cupsd_selfunc_t
)cupsdReadClient
,
4234 (cupsd_selfunc_t
)cupsdWriteClient
, con
);
4241 * 'write_pipe()' - Flag that data is available on the CGI pipe.
4245 write_pipe(cupsd_client_t
*con
) /* I - Client connection */
4247 cupsdLogMessage(CUPSD_LOG_DEBUG2
,
4248 "[Client %d] write_pipe CGI output on fd %d",
4249 con
->http
.fd
, con
->file
);
4251 con
->file_ready
= 1;
4253 cupsdRemoveSelect(con
->file
);
4254 cupsdAddSelect(con
->http
.fd
, NULL
, (cupsd_selfunc_t
)cupsdWriteClient
, con
);
4259 * End of "$Id: client.c 10886 2013-03-08 17:56:02Z mike $".