2 * IPP utilities for CUPS.
4 * Copyright 2007-2014 by Apple Inc.
5 * Copyright 1997-2007 by Easy Software Products.
7 * These coded instructions, statements, and computer programs are the
8 * property of Apple Inc. and are protected by Federal copyright
9 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
10 * which should have been included with this file. If this file is
11 * file is missing or damaged, see the license at "http://www.cups.org/".
13 * This file is subject to the Apple OS-Developed Software exception.
17 * Include necessary headers...
20 #include "cups-private.h"
23 #if defined(WIN32) || defined(__EMX__)
27 #endif /* WIN32 || __EMX__ */
32 # define MSG_DONTWAIT 0
33 #endif /* !MSG_DONTWAIT */
37 * 'cupsDoFileRequest()' - Do an IPP request with a file.
39 * This function sends the IPP request and attached file to the specified
40 * server, retrying and authenticating as necessary. The request is freed with
44 ipp_t
* /* O - Response data */
45 cupsDoFileRequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
46 ipp_t
*request
, /* I - IPP request */
47 const char *resource
, /* I - HTTP resource for POST */
48 const char *filename
) /* I - File to send or @code NULL@ for none */
50 ipp_t
*response
; /* IPP response data */
51 int infile
; /* Input file */
54 DEBUG_printf(("cupsDoFileRequest(http=%p, request=%p(%s), resource=\"%s\", filename=\"%s\")", (void *)http
, (void *)request
, request
? ippOpString(request
->request
.op
.operation_id
) : "?", resource
, filename
));
58 if ((infile
= open(filename
, O_RDONLY
| O_BINARY
)) < 0)
61 * Can't get file information!
64 _cupsSetError(errno
== ENOENT
? IPP_STATUS_ERROR_NOT_FOUND
: IPP_STATUS_ERROR_NOT_AUTHORIZED
,
75 response
= cupsDoIORequest(http
, request
, resource
, infile
, -1);
85 * 'cupsDoIORequest()' - Do an IPP request with file descriptors.
87 * This function sends the IPP request with the optional input file "infile" to
88 * the specified server, retrying and authenticating as necessary. The request
89 * is freed with @link ippDelete@.
91 * If "infile" is a valid file descriptor, @code cupsDoIORequest@ copies
92 * all of the data from the file after the IPP request message.
94 * If "outfile" is a valid file descriptor, @code cupsDoIORequest@ copies
95 * all of the data after the IPP response message to the file.
97 * @since CUPS 1.3/macOS 10.5@
100 ipp_t
* /* O - Response data */
101 cupsDoIORequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
102 ipp_t
*request
, /* I - IPP request */
103 const char *resource
, /* I - HTTP resource for POST */
104 int infile
, /* I - File to read from or -1 for none */
105 int outfile
) /* I - File to write to or -1 for none */
107 ipp_t
*response
= NULL
; /* IPP response data */
108 size_t length
= 0; /* Content-Length value */
109 http_status_t status
; /* Status of HTTP request */
110 struct stat fileinfo
; /* File information */
111 ssize_t bytes
; /* Number of bytes read/written */
112 char buffer
[32768]; /* Output buffer */
115 DEBUG_printf(("cupsDoIORequest(http=%p, request=%p(%s), resource=\"%s\", infile=%d, outfile=%d)", (void *)http
, (void *)request
, request
? ippOpString(request
->request
.op
.operation_id
) : "?", resource
, infile
, outfile
));
118 * Range check input...
121 if (!request
|| !resource
)
125 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(EINVAL
), 0);
131 * Get the default connection as needed...
135 if ((http
= _cupsConnect()) == NULL
)
143 * See if we have a file to send...
148 if (fstat(infile
, &fileinfo
))
151 * Can't get file information!
154 _cupsSetError(errno
== EBADF
? IPP_STATUS_ERROR_NOT_FOUND
: IPP_STATUS_ERROR_NOT_AUTHORIZED
,
163 if (fileinfo
.st_mode
& _S_IFDIR
)
165 if (S_ISDIR(fileinfo
.st_mode
))
169 * Can't send a directory...
174 _cupsSetError(IPP_STATUS_ERROR_NOT_POSSIBLE
, strerror(EISDIR
), 0);
180 if (!S_ISREG(fileinfo
.st_mode
))
181 length
= 0; /* Chunk when piping */
184 length
= ippLength(request
) + (size_t)fileinfo
.st_size
;
187 length
= ippLength(request
);
189 DEBUG_printf(("2cupsDoIORequest: Request length=%ld, total length=%ld",
190 (long)ippLength(request
), (long)length
));
193 * Clear any "Local" authentication data since it is probably stale...
196 if (http
->authstring
&& !strncmp(http
->authstring
, "Local ", 6))
197 httpSetAuthString(http
, NULL
, NULL
);
200 * Loop until we can send the request without authorization problems.
203 while (response
== NULL
)
205 DEBUG_puts("2cupsDoIORequest: setup...");
208 * Send the request...
211 status
= cupsSendRequest(http
, request
, resource
, length
);
213 DEBUG_printf(("2cupsDoIORequest: status=%d", status
));
215 if (status
== HTTP_STATUS_CONTINUE
&& request
->state
== IPP_STATE_DATA
&& infile
>= 0)
217 DEBUG_puts("2cupsDoIORequest: file write...");
220 * Send the file with the request...
224 if (S_ISREG(fileinfo
.st_mode
))
226 lseek(infile
, 0, SEEK_SET
);
228 while ((bytes
= read(infile
, buffer
, sizeof(buffer
))) > 0)
230 if ((status
= cupsWriteRequestData(http
, buffer
, (size_t)bytes
))
231 != HTTP_STATUS_CONTINUE
)
237 * Get the server's response...
240 if (status
<= HTTP_STATUS_CONTINUE
|| status
== HTTP_STATUS_OK
)
242 response
= cupsGetResponse(http
, resource
);
243 status
= httpGetStatus(http
);
246 DEBUG_printf(("2cupsDoIORequest: status=%d", status
));
248 if (status
== HTTP_STATUS_ERROR
||
249 (status
>= HTTP_STATUS_BAD_REQUEST
&& status
!= HTTP_STATUS_UNAUTHORIZED
&&
250 status
!= HTTP_STATUS_UPGRADE_REQUIRED
))
252 _cupsSetHTTPError(status
);
256 if (response
&& outfile
>= 0)
259 * Write trailing data to file...
262 while ((bytes
= httpRead2(http
, buffer
, sizeof(buffer
))) > 0)
263 if (write(outfile
, buffer
, (size_t)bytes
) < bytes
)
267 if (http
->state
!= HTTP_STATE_WAITING
)
270 * Flush any remaining data...
278 * Delete the original request and return the response...
288 * 'cupsDoRequest()' - Do an IPP request.
290 * This function sends the IPP request to the specified server, retrying
291 * and authenticating as necessary. The request is freed with @link ippDelete@.
294 ipp_t
* /* O - Response data */
295 cupsDoRequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
296 ipp_t
*request
, /* I - IPP request */
297 const char *resource
) /* I - HTTP resource for POST */
299 DEBUG_printf(("cupsDoRequest(http=%p, request=%p(%s), resource=\"%s\")", (void *)http
, (void *)request
, request
? ippOpString(request
->request
.op
.operation_id
) : "?", resource
));
301 return (cupsDoIORequest(http
, request
, resource
, -1, -1));
306 * 'cupsGetResponse()' - Get a response to an IPP request.
308 * Use this function to get the response for an IPP request sent using
309 * @link cupsSendRequest@. For requests that return additional data, use
310 * @link cupsReadResponseData@ after getting a successful response,
311 * otherwise call @link httpFlush@ to complete the response processing.
313 * @since CUPS 1.4/macOS 10.6@
316 ipp_t
* /* O - Response or @code NULL@ on HTTP error */
317 cupsGetResponse(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
318 const char *resource
) /* I - HTTP resource for POST */
320 http_status_t status
; /* HTTP status */
321 ipp_state_t state
; /* IPP read state */
322 ipp_t
*response
= NULL
; /* IPP response */
325 DEBUG_printf(("cupsGetResponse(http=%p, resource=\"%s\")", (void *)http
, resource
));
326 DEBUG_printf(("1cupsGetResponse: http->state=%d", http
? http
->state
: HTTP_STATE_ERROR
));
329 * Connect to the default server as needed...
334 _cups_globals_t
*cg
= _cupsGlobals();
335 /* Pointer to library globals */
337 if ((http
= cg
->http
) == NULL
)
339 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No active connection."), 1);
340 DEBUG_puts("1cupsGetResponse: No active connection - returning NULL.");
345 if (http
->state
!= HTTP_STATE_POST_RECV
&& http
->state
!= HTTP_STATE_POST_SEND
)
347 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No request sent."), 1);
348 DEBUG_puts("1cupsGetResponse: Not in POST state - returning NULL.");
353 * Check for an unfinished chunked request...
356 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
359 * Send a 0-length chunk to finish off the request...
362 DEBUG_puts("2cupsGetResponse: Finishing chunked POST...");
364 if (httpWrite2(http
, "", 0) < 0)
369 * Wait for a response from the server...
372 DEBUG_printf(("2cupsGetResponse: Update loop, http->status=%d...",
377 status
= httpUpdate(http
);
379 while (status
== HTTP_STATUS_CONTINUE
);
381 DEBUG_printf(("2cupsGetResponse: status=%d", status
));
383 if (status
== HTTP_STATUS_OK
)
386 * Get the IPP response...
391 while ((state
= ippRead(http
, response
)) != IPP_STATE_DATA
)
392 if (state
== IPP_STATE_ERROR
)
395 if (state
== IPP_STATE_ERROR
)
398 * Flush remaining data and delete the response...
401 DEBUG_puts("1cupsGetResponse: IPP read error!");
408 http
->status
= status
= HTTP_STATUS_ERROR
;
409 http
->error
= EINVAL
;
412 else if (status
!= HTTP_STATUS_ERROR
)
415 * Flush any error message...
421 * Then handle encryption and authentication...
424 if (status
== HTTP_STATUS_UNAUTHORIZED
)
427 * See if we can do authentication...
430 DEBUG_puts("2cupsGetResponse: Need authorization...");
432 if (!cupsDoAuthentication(http
, "POST", resource
))
433 httpReconnect2(http
, 30000, NULL
);
435 http
->status
= status
= HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED
;
439 else if (status
== HTTP_STATUS_UPGRADE_REQUIRED
)
442 * Force a reconnect with encryption...
445 DEBUG_puts("2cupsGetResponse: Need encryption...");
447 if (!httpReconnect2(http
, 30000, NULL
))
448 httpEncryption(http
, HTTP_ENCRYPTION_REQUIRED
);
450 #endif /* HAVE_SSL */
455 ipp_attribute_t
*attr
; /* status-message attribute */
458 attr
= ippFindAttribute(response
, "status-message", IPP_TAG_TEXT
);
460 DEBUG_printf(("1cupsGetResponse: status-code=%s, status-message=\"%s\"",
461 ippErrorString(response
->request
.status
.status_code
),
462 attr
? attr
->values
[0].string
.text
: ""));
464 _cupsSetError(response
->request
.status
.status_code
,
465 attr
? attr
->values
[0].string
.text
:
466 ippErrorString(response
->request
.status
.status_code
), 0);
474 * 'cupsLastError()' - Return the last IPP status code received on the current
478 ipp_status_t
/* O - IPP status code from last request */
481 return (_cupsGlobals()->last_error
);
486 * 'cupsLastErrorString()' - Return the last IPP status-message received on the
489 * @since CUPS 1.2/macOS 10.5@
492 const char * /* O - status-message text from last request */
493 cupsLastErrorString(void)
495 return (_cupsGlobals()->last_status_message
);
500 * '_cupsNextDelay()' - Return the next retry delay value.
502 * This function currently returns the Fibonacci sequence 1 1 2 3 5 8.
504 * Pass 0 for the current delay value to initialize the sequence.
507 int /* O - Next delay value */
508 _cupsNextDelay(int current
, /* I - Current delay value or 0 */
509 int *previous
) /* IO - Previous delay value */
511 int next
; /* Next delay value */
516 next
= (current
+ *previous
) % 12;
517 *previous
= next
< current
? 0 : current
;
530 * 'cupsReadResponseData()' - Read additional data after the IPP response.
532 * This function is used after @link cupsGetResponse@ to read the PPD or document
533 * files from @code CUPS_GET_PPD@ and @code CUPS_GET_DOCUMENT@ requests,
536 * @since CUPS 1.4/macOS 10.6@
539 ssize_t
/* O - Bytes read, 0 on EOF, -1 on error */
540 cupsReadResponseData(
541 http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
542 char *buffer
, /* I - Buffer to use */
543 size_t length
) /* I - Number of bytes to read */
546 * Get the default connection as needed...
549 DEBUG_printf(("cupsReadResponseData(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
553 _cups_globals_t
*cg
= _cupsGlobals();
554 /* Pointer to library globals */
556 if ((http
= cg
->http
) == NULL
)
558 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No active connection"), 1);
564 * Then read from the HTTP connection...
567 return (httpRead2(http
, buffer
, length
));
572 * 'cupsSendRequest()' - Send an IPP request.
574 * Use @link cupsWriteRequestData@ to write any additional data (document, PPD
575 * file, etc.) for the request, @link cupsGetResponse@ to get the IPP response,
576 * and @link cupsReadResponseData@ to read any additional data following the
577 * response. Only one request can be sent/queued at a time per @code http_t@
580 * Returns the initial HTTP status code, which will be @code HTTP_STATUS_CONTINUE@
581 * on a successful send of the request.
583 * Note: Unlike @link cupsDoFileRequest@, @link cupsDoIORequest@, and
584 * @link cupsDoRequest@, the request is NOT freed with @link ippDelete@.
586 * @since CUPS 1.4/macOS 10.6@
589 http_status_t
/* O - Initial HTTP status */
590 cupsSendRequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
591 ipp_t
*request
, /* I - IPP request */
592 const char *resource
, /* I - Resource path */
593 size_t length
) /* I - Length of data to follow or @code CUPS_LENGTH_VARIABLE@ */
595 http_status_t status
; /* Status of HTTP request */
596 int got_status
; /* Did we get the status? */
597 ipp_state_t state
; /* State of IPP processing */
598 http_status_t expect
; /* Expect: header to use */
601 DEBUG_printf(("cupsSendRequest(http=%p, request=%p(%s), resource=\"%s\", length=" CUPS_LLFMT
")", (void *)http
, (void *)request
, request
? ippOpString(request
->request
.op
.operation_id
) : "?", resource
, CUPS_LLCAST length
));
604 * Range check input...
607 if (!request
|| !resource
)
609 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(EINVAL
), 0);
611 return (HTTP_STATUS_ERROR
);
615 * Get the default connection as needed...
619 if ((http
= _cupsConnect()) == NULL
)
620 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
623 * If the prior request was not flushed out, do so now...
626 if (http
->state
== HTTP_STATE_GET_SEND
||
627 http
->state
== HTTP_STATE_POST_SEND
)
629 DEBUG_puts("2cupsSendRequest: Flush prior response.");
632 else if (http
->state
!= HTTP_STATE_WAITING
)
634 DEBUG_printf(("1cupsSendRequest: Unknown HTTP state (%d), "
635 "reconnecting.", http
->state
));
636 if (httpReconnect2(http
, 30000, NULL
))
637 return (HTTP_STATUS_ERROR
);
642 * See if we have an auth-info attribute and are communicating over
643 * a non-local link. If so, encrypt the link so that we can pass
644 * the authentication information securely...
647 if (ippFindAttribute(request
, "auth-info", IPP_TAG_TEXT
) &&
648 !httpAddrLocalhost(http
->hostaddr
) && !http
->tls
&&
649 httpEncryption(http
, HTTP_ENCRYPTION_REQUIRED
))
651 DEBUG_puts("1cupsSendRequest: Unable to encrypt connection.");
652 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
654 #endif /* HAVE_SSL */
657 * Reconnect if the last response had a "Connection: close"...
660 if (!_cups_strcasecmp(http
->fields
[HTTP_FIELD_CONNECTION
], "close"))
662 DEBUG_puts("2cupsSendRequest: Connection: close");
663 httpClearFields(http
);
664 if (httpReconnect2(http
, 30000, NULL
))
666 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
667 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
672 * Loop until we can send the request without authorization problems.
675 expect
= HTTP_STATUS_CONTINUE
;
679 DEBUG_puts("2cupsSendRequest: Setup...");
682 * Setup the HTTP variables needed...
685 httpClearFields(http
);
686 httpSetExpect(http
, expect
);
687 httpSetField(http
, HTTP_FIELD_CONTENT_TYPE
, "application/ipp");
688 httpSetLength(http
, length
);
691 if (http
->authstring
&& !strncmp(http
->authstring
, "Negotiate", 9))
694 * Do not use cached Kerberos credentials since they will look like a
698 _cupsSetNegotiateAuthString(http
, "POST", resource
);
700 #endif /* HAVE_GSSAPI */
702 httpSetField(http
, HTTP_FIELD_AUTHORIZATION
, http
->authstring
);
704 DEBUG_printf(("2cupsSendRequest: authstring=\"%s\"", http
->authstring
));
710 DEBUG_puts("2cupsSendRequest: Sending HTTP POST...");
712 if (httpPost(http
, resource
))
714 DEBUG_puts("2cupsSendRequest: POST failed, reconnecting.");
715 if (httpReconnect2(http
, 30000, NULL
))
717 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
718 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
725 * Send the IPP data...
728 DEBUG_puts("2cupsSendRequest: Writing IPP request...");
730 request
->state
= IPP_STATE_IDLE
;
731 status
= HTTP_STATUS_CONTINUE
;
734 while ((state
= ippWrite(http
, request
)) != IPP_STATE_DATA
)
740 _httpUpdate(http
, &status
);
741 if (status
>= HTTP_STATUS_MULTIPLE_CHOICES
)
744 else if (state
== IPP_STATE_ERROR
)
748 if (state
== IPP_STATE_ERROR
)
751 * We weren't able to send the IPP request. But did we already get a HTTP
755 if (!got_status
|| status
< HTTP_STATUS_MULTIPLE_CHOICES
)
758 * No, something else went wrong.
761 DEBUG_puts("1cupsSendRequest: Unable to send IPP request.");
763 http
->status
= HTTP_STATUS_ERROR
;
764 http
->state
= HTTP_STATE_WAITING
;
766 return (HTTP_STATUS_ERROR
);
771 * Wait up to 1 second to get the 100-continue response as needed...
776 if (expect
== HTTP_STATUS_CONTINUE
)
778 DEBUG_puts("2cupsSendRequest: Waiting for 100-continue...");
780 if (httpWait(http
, 1000))
781 _httpUpdate(http
, &status
);
783 else if (httpCheck(http
))
784 _httpUpdate(http
, &status
);
787 DEBUG_printf(("2cupsSendRequest: status=%d", status
));
790 * Process the current HTTP status...
793 if (status
>= HTTP_STATUS_MULTIPLE_CHOICES
)
795 int temp_status
; /* Temporary status */
797 _cupsSetHTTPError(status
);
801 temp_status
= httpUpdate(http
);
803 while (temp_status
!= HTTP_STATUS_ERROR
&&
804 http
->state
== HTTP_STATE_POST_RECV
);
811 case HTTP_STATUS_CONTINUE
:
812 case HTTP_STATUS_OK
:
813 case HTTP_STATUS_ERROR
:
814 DEBUG_printf(("1cupsSendRequest: Returning %d.", status
));
817 case HTTP_STATUS_UNAUTHORIZED
:
818 if (cupsDoAuthentication(http
, "POST", resource
))
820 DEBUG_puts("1cupsSendRequest: Returning HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED.");
821 return (HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED
);
824 DEBUG_puts("2cupsSendRequest: Reconnecting after HTTP_STATUS_UNAUTHORIZED.");
826 if (httpReconnect2(http
, 30000, NULL
))
828 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
829 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
834 case HTTP_STATUS_UPGRADE_REQUIRED
:
836 * Flush any error message, reconnect, and then upgrade with
840 DEBUG_puts("2cupsSendRequest: Reconnecting after "
841 "HTTP_STATUS_UPGRADE_REQUIRED.");
843 if (httpReconnect2(http
, 30000, NULL
))
845 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
846 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
849 DEBUG_puts("2cupsSendRequest: Upgrading to TLS.");
850 if (httpEncryption(http
, HTTP_ENCRYPTION_REQUIRED
))
852 DEBUG_puts("1cupsSendRequest: Unable to encrypt connection.");
853 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
856 #endif /* HAVE_SSL */
858 case HTTP_STATUS_EXPECTATION_FAILED
:
860 * Don't try using the Expect: header the next time around...
863 expect
= (http_status_t
)0;
865 DEBUG_puts("2cupsSendRequest: Reconnecting after "
866 "HTTP_EXPECTATION_FAILED.");
868 if (httpReconnect2(http
, 30000, NULL
))
870 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
871 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
877 * Some other error...
887 * 'cupsWriteRequestData()' - Write additional data after an IPP request.
889 * This function is used after @link cupsSendRequest@ to provide a PPD and
890 * after @link cupsStartDocument@ to provide a document file.
892 * @since CUPS 1.4/macOS 10.6@
895 http_status_t
/* O - @code HTTP_STATUS_CONTINUE@ if OK or HTTP status on error */
896 cupsWriteRequestData(
897 http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
898 const char *buffer
, /* I - Bytes to write */
899 size_t length
) /* I - Number of bytes to write */
901 int wused
; /* Previous bytes in buffer */
905 * Get the default connection as needed...
908 DEBUG_printf(("cupsWriteRequestData(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
912 _cups_globals_t
*cg
= _cupsGlobals();
913 /* Pointer to library globals */
915 if ((http
= cg
->http
) == NULL
)
917 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No active connection"), 1);
918 DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR.");
919 return (HTTP_STATUS_ERROR
);
924 * Then write to the HTTP connection...
929 if (httpWrite2(http
, buffer
, length
) < 0)
931 DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR.");
932 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(http
->error
), 0);
933 return (HTTP_STATUS_ERROR
);
937 * Finally, check if we have any pending data from the server...
940 if (length
>= HTTP_MAX_BUFFER
||
941 http
->wused
< wused
||
942 (wused
> 0 && (size_t)http
->wused
== length
))
945 * We've written something to the server, so check for response data...
948 if (_httpWait(http
, 0, 1))
950 http_status_t status
; /* Status from _httpUpdate */
952 _httpUpdate(http
, &status
);
953 if (status
>= HTTP_STATUS_MULTIPLE_CHOICES
)
955 _cupsSetHTTPError(status
);
959 status
= httpUpdate(http
);
961 while (status
!= HTTP_STATUS_ERROR
&& http
->state
== HTTP_STATE_POST_RECV
);
966 DEBUG_printf(("1cupsWriteRequestData: Returning %d.\n", status
));
971 DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_CONTINUE.");
972 return (HTTP_STATUS_CONTINUE
);
977 * '_cupsConnect()' - Get the default server connection...
980 http_t
* /* O - HTTP connection */
983 _cups_globals_t
*cg
= _cupsGlobals(); /* Pointer to library globals */
987 * See if we are connected to the same server...
993 * Compare the connection hostname, port, and encryption settings to
994 * the cached defaults; these were initialized the first time we
998 if (strcmp(cg
->http
->hostname
, cg
->server
) ||
999 cg
->ipp_port
!= httpAddrPort(cg
->http
->hostaddr
) ||
1000 (cg
->http
->encryption
!= cg
->encryption
&&
1001 cg
->http
->encryption
== HTTP_ENCRYPTION_NEVER
))
1004 * Need to close the current connection because something has changed...
1007 httpClose(cg
->http
);
1013 * Same server, see if the connection is still established...
1016 char ch
; /* Connection check byte */
1017 ssize_t n
; /* Number of bytes */
1020 if ((n
= recv(cg
->http
->fd
, &ch
, 1, MSG_PEEK
)) == 0 ||
1021 (n
< 0 && WSAGetLastError() != WSAEWOULDBLOCK
))
1023 if ((n
= recv(cg
->http
->fd
, &ch
, 1, MSG_PEEK
| MSG_DONTWAIT
)) == 0 ||
1024 (n
< 0 && errno
!= EWOULDBLOCK
))
1028 * Nope, close the connection...
1031 httpClose(cg
->http
);
1038 * (Re)connect as needed...
1043 if ((cg
->http
= httpConnect2(cupsServer(), ippPort(), NULL
, AF_UNSPEC
,
1044 cupsEncryption(), 1, 30000, NULL
)) == NULL
)
1047 _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE
, NULL
, 0);
1049 _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE
,
1050 _("Unable to connect to host."), 1);
1055 * Return the cached connection...
1063 * '_cupsSetError()' - Set the last IPP status code and status-message.
1067 _cupsSetError(ipp_status_t status
, /* I - IPP status code */
1068 const char *message
, /* I - status-message value */
1069 int localize
) /* I - Localize the message? */
1071 _cups_globals_t
*cg
; /* Global data */
1074 if (!message
&& errno
)
1076 message
= strerror(errno
);
1080 cg
= _cupsGlobals();
1081 cg
->last_error
= status
;
1083 if (cg
->last_status_message
)
1085 _cupsStrFree(cg
->last_status_message
);
1087 cg
->last_status_message
= NULL
;
1095 * Get the message catalog...
1098 if (!cg
->lang_default
)
1099 cg
->lang_default
= cupsLangDefault();
1101 cg
->last_status_message
= _cupsStrAlloc(_cupsLangString(cg
->lang_default
,
1105 cg
->last_status_message
= _cupsStrAlloc(message
);
1108 DEBUG_printf(("4_cupsSetError: last_error=%s, last_status_message=\"%s\"",
1109 ippErrorString(cg
->last_error
), cg
->last_status_message
));
1114 * '_cupsSetHTTPError()' - Set the last error using the HTTP status.
1118 _cupsSetHTTPError(http_status_t status
) /* I - HTTP status code */
1122 case HTTP_STATUS_NOT_FOUND
:
1123 _cupsSetError(IPP_STATUS_ERROR_NOT_FOUND
, httpStatus(status
), 0);
1126 case HTTP_STATUS_UNAUTHORIZED
:
1127 _cupsSetError(IPP_STATUS_ERROR_NOT_AUTHENTICATED
, httpStatus(status
), 0);
1130 case HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED
:
1131 _cupsSetError(IPP_STATUS_ERROR_CUPS_AUTHENTICATION_CANCELED
, httpStatus(status
), 0);
1134 case HTTP_STATUS_FORBIDDEN
:
1135 _cupsSetError(IPP_STATUS_ERROR_FORBIDDEN
, httpStatus(status
), 0);
1138 case HTTP_STATUS_BAD_REQUEST
:
1139 _cupsSetError(IPP_STATUS_ERROR_BAD_REQUEST
, httpStatus(status
), 0);
1142 case HTTP_STATUS_REQUEST_TOO_LARGE
:
1143 _cupsSetError(IPP_STATUS_ERROR_REQUEST_VALUE
, httpStatus(status
), 0);
1146 case HTTP_STATUS_NOT_IMPLEMENTED
:
1147 _cupsSetError(IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED
, httpStatus(status
), 0);
1150 case HTTP_STATUS_NOT_SUPPORTED
:
1151 _cupsSetError(IPP_STATUS_ERROR_VERSION_NOT_SUPPORTED
, httpStatus(status
), 0);
1154 case HTTP_STATUS_UPGRADE_REQUIRED
:
1155 _cupsSetError(IPP_STATUS_ERROR_CUPS_UPGRADE_REQUIRED
, httpStatus(status
), 0);
1158 case HTTP_STATUS_CUPS_PKI_ERROR
:
1159 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
, httpStatus(status
), 0);
1162 case HTTP_STATUS_ERROR
:
1163 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(errno
), 0);
1167 DEBUG_printf(("4_cupsSetHTTPError: HTTP error %d mapped to "
1168 "IPP_STATUS_ERROR_SERVICE_UNAVAILABLE!", status
));
1169 _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE
, httpStatus(status
), 0);