2 * IPP utilities for CUPS.
4 * Copyright © 2007-2018 by Apple Inc.
5 * Copyright © 1997-2007 by Easy Software Products.
7 * Licensed under Apache License v2.0. See the file "LICENSE" for more information.
11 * Include necessary headers...
14 #include "cups-private.h"
15 #include "debug-internal.h"
18 #if defined(_WIN32) || defined(__EMX__)
22 #endif /* _WIN32 || __EMX__ */
27 # define MSG_DONTWAIT 0
28 #endif /* !MSG_DONTWAIT */
32 * 'cupsDoFileRequest()' - Do an IPP request with a file.
34 * This function sends the IPP request and attached file to the specified
35 * server, retrying and authenticating as necessary. The request is freed with
39 ipp_t
* /* O - Response data */
40 cupsDoFileRequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
41 ipp_t
*request
, /* I - IPP request */
42 const char *resource
, /* I - HTTP resource for POST */
43 const char *filename
) /* I - File to send or @code NULL@ for none */
45 ipp_t
*response
; /* IPP response data */
46 int infile
; /* Input file */
49 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
));
53 if ((infile
= open(filename
, O_RDONLY
| O_BINARY
)) < 0)
56 * Can't get file information!
59 _cupsSetError(errno
== ENOENT
? IPP_STATUS_ERROR_NOT_FOUND
: IPP_STATUS_ERROR_NOT_AUTHORIZED
,
70 response
= cupsDoIORequest(http
, request
, resource
, infile
, -1);
80 * 'cupsDoIORequest()' - Do an IPP request with file descriptors.
82 * This function sends the IPP request with the optional input file "infile" to
83 * the specified server, retrying and authenticating as necessary. The request
84 * is freed with @link ippDelete@.
86 * If "infile" is a valid file descriptor, @code cupsDoIORequest@ copies
87 * all of the data from the file after the IPP request message.
89 * If "outfile" is a valid file descriptor, @code cupsDoIORequest@ copies
90 * all of the data after the IPP response message to the file.
92 * @since CUPS 1.3/macOS 10.5@
95 ipp_t
* /* O - Response data */
96 cupsDoIORequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
97 ipp_t
*request
, /* I - IPP request */
98 const char *resource
, /* I - HTTP resource for POST */
99 int infile
, /* I - File to read from or -1 for none */
100 int outfile
) /* I - File to write to or -1 for none */
102 ipp_t
*response
= NULL
; /* IPP response data */
103 size_t length
= 0; /* Content-Length value */
104 http_status_t status
; /* Status of HTTP request */
105 struct stat fileinfo
; /* File information */
106 ssize_t bytes
; /* Number of bytes read/written */
107 char buffer
[32768]; /* Output buffer */
110 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
));
113 * Range check input...
116 if (!request
|| !resource
)
120 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(EINVAL
), 0);
126 * Get the default connection as needed...
129 if (!http
&& (http
= _cupsConnect()) == NULL
)
137 * See if we have a file to send...
142 if (fstat(infile
, &fileinfo
))
145 * Can't get file information!
148 _cupsSetError(errno
== EBADF
? IPP_STATUS_ERROR_NOT_FOUND
: IPP_STATUS_ERROR_NOT_AUTHORIZED
, NULL
, 0);
155 if (fileinfo
.st_mode
& _S_IFDIR
)
157 if (S_ISDIR(fileinfo
.st_mode
))
161 * Can't send a directory...
164 _cupsSetError(IPP_STATUS_ERROR_NOT_POSSIBLE
, strerror(EISDIR
), 0);
171 if (!S_ISREG(fileinfo
.st_mode
))
172 length
= 0; /* Chunk when piping */
175 length
= ippLength(request
) + (size_t)fileinfo
.st_size
;
178 length
= ippLength(request
);
180 DEBUG_printf(("2cupsDoIORequest: Request length=%ld, total length=%ld", (long)ippLength(request
), (long)length
));
183 * Clear any "Local" authentication data since it is probably stale...
186 if (http
->authstring
&& !strncmp(http
->authstring
, "Local ", 6))
187 httpSetAuthString(http
, NULL
, NULL
);
190 * Loop until we can send the request without authorization problems.
193 while (response
== NULL
)
195 DEBUG_puts("2cupsDoIORequest: setup...");
198 * Send the request...
201 status
= cupsSendRequest(http
, request
, resource
, length
);
203 DEBUG_printf(("2cupsDoIORequest: status=%d", status
));
205 if (status
== HTTP_STATUS_CONTINUE
&& request
->state
== IPP_STATE_DATA
&& infile
>= 0)
207 DEBUG_puts("2cupsDoIORequest: file write...");
210 * Send the file with the request...
214 if (S_ISREG(fileinfo
.st_mode
))
216 lseek(infile
, 0, SEEK_SET
);
218 while ((bytes
= read(infile
, buffer
, sizeof(buffer
))) > 0)
220 if ((status
= cupsWriteRequestData(http
, buffer
, (size_t)bytes
))
221 != HTTP_STATUS_CONTINUE
)
227 * Get the server's response...
230 if (status
<= HTTP_STATUS_CONTINUE
|| status
== HTTP_STATUS_OK
)
232 response
= cupsGetResponse(http
, resource
);
233 status
= httpGetStatus(http
);
236 DEBUG_printf(("2cupsDoIORequest: status=%d", status
));
238 if (status
== HTTP_STATUS_ERROR
||
239 (status
>= HTTP_STATUS_BAD_REQUEST
&& status
!= HTTP_STATUS_UNAUTHORIZED
&&
240 status
!= HTTP_STATUS_UPGRADE_REQUIRED
))
242 _cupsSetHTTPError(status
);
246 if (response
&& outfile
>= 0)
249 * Write trailing data to file...
252 while ((bytes
= httpRead2(http
, buffer
, sizeof(buffer
))) > 0)
253 if (write(outfile
, buffer
, (size_t)bytes
) < bytes
)
257 if (http
->state
!= HTTP_STATE_WAITING
)
260 * Flush any remaining data...
268 * Delete the original request and return the response...
278 * 'cupsDoRequest()' - Do an IPP request.
280 * This function sends the IPP request to the specified server, retrying
281 * and authenticating as necessary. The request is freed with @link ippDelete@.
284 ipp_t
* /* O - Response data */
285 cupsDoRequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
286 ipp_t
*request
, /* I - IPP request */
287 const char *resource
) /* I - HTTP resource for POST */
289 DEBUG_printf(("cupsDoRequest(http=%p, request=%p(%s), resource=\"%s\")", (void *)http
, (void *)request
, request
? ippOpString(request
->request
.op
.operation_id
) : "?", resource
));
291 return (cupsDoIORequest(http
, request
, resource
, -1, -1));
296 * 'cupsGetResponse()' - Get a response to an IPP request.
298 * Use this function to get the response for an IPP request sent using
299 * @link cupsSendRequest@. For requests that return additional data, use
300 * @link cupsReadResponseData@ after getting a successful response,
301 * otherwise call @link httpFlush@ to complete the response processing.
303 * @since CUPS 1.4/macOS 10.6@
306 ipp_t
* /* O - Response or @code NULL@ on HTTP error */
307 cupsGetResponse(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
308 const char *resource
) /* I - HTTP resource for POST */
310 http_status_t status
; /* HTTP status */
311 ipp_state_t state
; /* IPP read state */
312 ipp_t
*response
= NULL
; /* IPP response */
315 DEBUG_printf(("cupsGetResponse(http=%p, resource=\"%s\")", (void *)http
, resource
));
316 DEBUG_printf(("1cupsGetResponse: http->state=%d", http
? http
->state
: HTTP_STATE_ERROR
));
319 * Connect to the default server as needed...
324 _cups_globals_t
*cg
= _cupsGlobals();
325 /* Pointer to library globals */
327 if ((http
= cg
->http
) == NULL
)
329 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No active connection."), 1);
330 DEBUG_puts("1cupsGetResponse: No active connection - returning NULL.");
335 if (http
->state
!= HTTP_STATE_POST_RECV
&& http
->state
!= HTTP_STATE_POST_SEND
)
337 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No request sent."), 1);
338 DEBUG_puts("1cupsGetResponse: Not in POST state - returning NULL.");
343 * Check for an unfinished chunked request...
346 if (http
->data_encoding
== HTTP_ENCODING_CHUNKED
)
349 * Send a 0-length chunk to finish off the request...
352 DEBUG_puts("2cupsGetResponse: Finishing chunked POST...");
354 if (httpWrite2(http
, "", 0) < 0)
359 * Wait for a response from the server...
362 DEBUG_printf(("2cupsGetResponse: Update loop, http->status=%d...",
367 status
= httpUpdate(http
);
369 while (status
== HTTP_STATUS_CONTINUE
);
371 DEBUG_printf(("2cupsGetResponse: status=%d", status
));
373 if (status
== HTTP_STATUS_OK
)
376 * Get the IPP response...
381 while ((state
= ippRead(http
, response
)) != IPP_STATE_DATA
)
382 if (state
== IPP_STATE_ERROR
)
385 if (state
== IPP_STATE_ERROR
)
388 * Flush remaining data and delete the response...
391 DEBUG_puts("1cupsGetResponse: IPP read error!");
398 http
->status
= status
= HTTP_STATUS_ERROR
;
399 http
->error
= EINVAL
;
402 else if (status
!= HTTP_STATUS_ERROR
)
405 * Flush any error message...
411 * Then handle encryption and authentication...
414 if (status
== HTTP_STATUS_UNAUTHORIZED
)
417 * See if we can do authentication...
420 DEBUG_puts("2cupsGetResponse: Need authorization...");
422 if (!cupsDoAuthentication(http
, "POST", resource
))
423 httpReconnect2(http
, 30000, NULL
);
425 http
->status
= status
= HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED
;
429 else if (status
== HTTP_STATUS_UPGRADE_REQUIRED
)
432 * Force a reconnect with encryption...
435 DEBUG_puts("2cupsGetResponse: Need encryption...");
437 if (!httpReconnect2(http
, 30000, NULL
))
438 httpEncryption(http
, HTTP_ENCRYPTION_REQUIRED
);
440 #endif /* HAVE_SSL */
445 ipp_attribute_t
*attr
; /* status-message attribute */
448 attr
= ippFindAttribute(response
, "status-message", IPP_TAG_TEXT
);
450 DEBUG_printf(("1cupsGetResponse: status-code=%s, status-message=\"%s\"",
451 ippErrorString(response
->request
.status
.status_code
),
452 attr
? attr
->values
[0].string
.text
: ""));
454 _cupsSetError(response
->request
.status
.status_code
,
455 attr
? attr
->values
[0].string
.text
:
456 ippErrorString(response
->request
.status
.status_code
), 0);
464 * 'cupsLastError()' - Return the last IPP status code received on the current
468 ipp_status_t
/* O - IPP status code from last request */
471 return (_cupsGlobals()->last_error
);
476 * 'cupsLastErrorString()' - Return the last IPP status-message received on the
479 * @since CUPS 1.2/macOS 10.5@
482 const char * /* O - status-message text from last request */
483 cupsLastErrorString(void)
485 return (_cupsGlobals()->last_status_message
);
490 * '_cupsNextDelay()' - Return the next retry delay value.
492 * This function currently returns the Fibonacci sequence 1 1 2 3 5 8.
494 * Pass 0 for the current delay value to initialize the sequence.
497 int /* O - Next delay value */
498 _cupsNextDelay(int current
, /* I - Current delay value or 0 */
499 int *previous
) /* IO - Previous delay value */
501 int next
; /* Next delay value */
506 next
= (current
+ *previous
) % 12;
507 *previous
= next
< current
? 0 : current
;
520 * 'cupsReadResponseData()' - Read additional data after the IPP response.
522 * This function is used after @link cupsGetResponse@ to read the PPD or document
523 * files from @code CUPS_GET_PPD@ and @code CUPS_GET_DOCUMENT@ requests,
526 * @since CUPS 1.4/macOS 10.6@
529 ssize_t
/* O - Bytes read, 0 on EOF, -1 on error */
530 cupsReadResponseData(
531 http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
532 char *buffer
, /* I - Buffer to use */
533 size_t length
) /* I - Number of bytes to read */
536 * Get the default connection as needed...
539 DEBUG_printf(("cupsReadResponseData(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
543 _cups_globals_t
*cg
= _cupsGlobals();
544 /* Pointer to library globals */
546 if ((http
= cg
->http
) == NULL
)
548 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No active connection"), 1);
554 * Then read from the HTTP connection...
557 return (httpRead2(http
, buffer
, length
));
562 * 'cupsSendRequest()' - Send an IPP request.
564 * Use @link cupsWriteRequestData@ to write any additional data (document, PPD
565 * file, etc.) for the request, @link cupsGetResponse@ to get the IPP response,
566 * and @link cupsReadResponseData@ to read any additional data following the
567 * response. Only one request can be sent/queued at a time per @code http_t@
570 * Returns the initial HTTP status code, which will be @code HTTP_STATUS_CONTINUE@
571 * on a successful send of the request.
573 * Note: Unlike @link cupsDoFileRequest@, @link cupsDoIORequest@, and
574 * @link cupsDoRequest@, the request is NOT freed with @link ippDelete@.
576 * @since CUPS 1.4/macOS 10.6@
579 http_status_t
/* O - Initial HTTP status */
580 cupsSendRequest(http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
581 ipp_t
*request
, /* I - IPP request */
582 const char *resource
, /* I - Resource path */
583 size_t length
) /* I - Length of data to follow or @code CUPS_LENGTH_VARIABLE@ */
585 http_status_t status
; /* Status of HTTP request */
586 int got_status
; /* Did we get the status? */
587 ipp_state_t state
; /* State of IPP processing */
588 http_status_t expect
; /* Expect: header to use */
589 char date
[256]; /* Date: header value */
590 int digest
; /* Are we using Digest authentication? */
593 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
));
596 * Range check input...
599 if (!request
|| !resource
)
601 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(EINVAL
), 0);
603 return (HTTP_STATUS_ERROR
);
607 * Get the default connection as needed...
610 if (!http
&& (http
= _cupsConnect()) == NULL
)
611 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
614 * If the prior request was not flushed out, do so now...
617 if (http
->state
== HTTP_STATE_GET_SEND
||
618 http
->state
== HTTP_STATE_POST_SEND
)
620 DEBUG_puts("2cupsSendRequest: Flush prior response.");
623 else if (http
->state
!= HTTP_STATE_WAITING
)
625 DEBUG_printf(("1cupsSendRequest: Unknown HTTP state (%d), "
626 "reconnecting.", http
->state
));
627 if (httpReconnect2(http
, 30000, NULL
))
628 return (HTTP_STATUS_ERROR
);
633 * See if we have an auth-info attribute and are communicating over
634 * a non-local link. If so, encrypt the link so that we can pass
635 * the authentication information securely...
638 if (ippFindAttribute(request
, "auth-info", IPP_TAG_TEXT
) &&
639 !httpAddrLocalhost(http
->hostaddr
) && !http
->tls
&&
640 httpEncryption(http
, HTTP_ENCRYPTION_REQUIRED
))
642 DEBUG_puts("1cupsSendRequest: Unable to encrypt connection.");
643 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
645 #endif /* HAVE_SSL */
648 * Reconnect if the last response had a "Connection: close"...
651 if (!_cups_strcasecmp(httpGetField(http
, HTTP_FIELD_CONNECTION
), "close"))
653 DEBUG_puts("2cupsSendRequest: Connection: close");
654 httpClearFields(http
);
655 if (httpReconnect2(http
, 30000, NULL
))
657 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
658 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
663 * Loop until we can send the request without authorization problems.
666 expect
= HTTP_STATUS_CONTINUE
;
670 DEBUG_puts("2cupsSendRequest: Setup...");
673 * Setup the HTTP variables needed...
676 httpClearFields(http
);
677 httpSetExpect(http
, expect
);
678 httpSetField(http
, HTTP_FIELD_CONTENT_TYPE
, "application/ipp");
679 httpSetField(http
, HTTP_FIELD_DATE
, httpGetDateString2(time(NULL
), date
, (int)sizeof(date
)));
680 httpSetLength(http
, length
);
682 digest
= http
->authstring
&& !strncmp(http
->authstring
, "Digest ", 7);
687 * Update the Digest authentication string...
690 _httpSetDigestAuthString(http
, http
->nextnonce
, "POST", resource
);
694 if (http
->authstring
&& !strncmp(http
->authstring
, "Negotiate", 9))
697 * Do not use cached Kerberos credentials since they will look like a
701 _cupsSetNegotiateAuthString(http
, "POST", resource
);
703 #endif /* HAVE_GSSAPI */
705 httpSetField(http
, HTTP_FIELD_AUTHORIZATION
, http
->authstring
);
707 DEBUG_printf(("2cupsSendRequest: authstring=\"%s\"", http
->authstring
));
713 DEBUG_puts("2cupsSendRequest: Sending HTTP POST...");
715 if (httpPost(http
, resource
))
717 DEBUG_puts("2cupsSendRequest: POST failed, reconnecting.");
718 if (httpReconnect2(http
, 30000, NULL
))
720 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
721 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
728 * Send the IPP data...
731 DEBUG_puts("2cupsSendRequest: Writing IPP request...");
733 request
->state
= IPP_STATE_IDLE
;
734 status
= HTTP_STATUS_CONTINUE
;
737 while ((state
= ippWrite(http
, request
)) != IPP_STATE_DATA
)
743 _httpUpdate(http
, &status
);
744 if (status
>= HTTP_STATUS_MULTIPLE_CHOICES
)
747 else if (state
== IPP_STATE_ERROR
)
751 if (state
== IPP_STATE_ERROR
)
754 * We weren't able to send the IPP request. But did we already get a HTTP
758 if (!got_status
|| status
< HTTP_STATUS_MULTIPLE_CHOICES
)
761 * No, something else went wrong.
764 DEBUG_puts("1cupsSendRequest: Unable to send IPP request.");
766 http
->status
= HTTP_STATUS_ERROR
;
767 http
->state
= HTTP_STATE_WAITING
;
769 return (HTTP_STATUS_ERROR
);
774 * Wait up to 1 second to get the 100-continue response as needed...
777 if (!got_status
|| (digest
&& status
== HTTP_STATUS_CONTINUE
))
779 if (expect
== HTTP_STATUS_CONTINUE
|| digest
)
781 DEBUG_puts("2cupsSendRequest: Waiting for 100-continue...");
783 if (httpWait(http
, 1000))
784 _httpUpdate(http
, &status
);
786 else if (httpCheck(http
))
787 _httpUpdate(http
, &status
);
790 DEBUG_printf(("2cupsSendRequest: status=%d", status
));
793 * Process the current HTTP status...
796 if (status
>= HTTP_STATUS_MULTIPLE_CHOICES
)
798 int temp_status
; /* Temporary status */
800 _cupsSetHTTPError(status
);
804 temp_status
= httpUpdate(http
);
806 while (temp_status
!= HTTP_STATUS_ERROR
&&
807 http
->state
== HTTP_STATE_POST_RECV
);
814 case HTTP_STATUS_CONTINUE
:
815 case HTTP_STATUS_OK
:
816 case HTTP_STATUS_ERROR
:
817 DEBUG_printf(("1cupsSendRequest: Returning %d.", status
));
820 case HTTP_STATUS_UNAUTHORIZED
:
821 if (cupsDoAuthentication(http
, "POST", resource
))
823 DEBUG_puts("1cupsSendRequest: Returning HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED.");
824 return (HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED
);
827 DEBUG_puts("2cupsSendRequest: Reconnecting after HTTP_STATUS_UNAUTHORIZED.");
829 if (httpReconnect2(http
, 30000, NULL
))
831 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
832 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
837 case HTTP_STATUS_UPGRADE_REQUIRED
:
839 * Flush any error message, reconnect, and then upgrade with
843 DEBUG_puts("2cupsSendRequest: Reconnecting after "
844 "HTTP_STATUS_UPGRADE_REQUIRED.");
846 if (httpReconnect2(http
, 30000, NULL
))
848 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
849 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
852 DEBUG_puts("2cupsSendRequest: Upgrading to TLS.");
853 if (httpEncryption(http
, HTTP_ENCRYPTION_REQUIRED
))
855 DEBUG_puts("1cupsSendRequest: Unable to encrypt connection.");
856 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
859 #endif /* HAVE_SSL */
861 case HTTP_STATUS_EXPECTATION_FAILED
:
863 * Don't try using the Expect: header the next time around...
866 expect
= (http_status_t
)0;
868 DEBUG_puts("2cupsSendRequest: Reconnecting after "
869 "HTTP_EXPECTATION_FAILED.");
871 if (httpReconnect2(http
, 30000, NULL
))
873 DEBUG_puts("1cupsSendRequest: Unable to reconnect.");
874 return (HTTP_STATUS_SERVICE_UNAVAILABLE
);
880 * Some other error...
890 * 'cupsWriteRequestData()' - Write additional data after an IPP request.
892 * This function is used after @link cupsSendRequest@ to provide a PPD and
893 * after @link cupsStartDocument@ to provide a document file.
895 * @since CUPS 1.4/macOS 10.6@
898 http_status_t
/* O - @code HTTP_STATUS_CONTINUE@ if OK or HTTP status on error */
899 cupsWriteRequestData(
900 http_t
*http
, /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
901 const char *buffer
, /* I - Bytes to write */
902 size_t length
) /* I - Number of bytes to write */
904 int wused
; /* Previous bytes in buffer */
908 * Get the default connection as needed...
911 DEBUG_printf(("cupsWriteRequestData(http=%p, buffer=%p, length=" CUPS_LLFMT
")", (void *)http
, (void *)buffer
, CUPS_LLCAST length
));
915 _cups_globals_t
*cg
= _cupsGlobals();
916 /* Pointer to library globals */
918 if ((http
= cg
->http
) == NULL
)
920 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, _("No active connection"), 1);
921 DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR.");
922 return (HTTP_STATUS_ERROR
);
927 * Then write to the HTTP connection...
932 if (httpWrite2(http
, buffer
, length
) < 0)
934 DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_ERROR.");
935 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(http
->error
), 0);
936 return (HTTP_STATUS_ERROR
);
940 * Finally, check if we have any pending data from the server...
943 if (length
>= HTTP_MAX_BUFFER
||
944 http
->wused
< wused
||
945 (wused
> 0 && (size_t)http
->wused
== length
))
948 * We've written something to the server, so check for response data...
951 if (_httpWait(http
, 0, 1))
953 http_status_t status
; /* Status from _httpUpdate */
955 _httpUpdate(http
, &status
);
956 if (status
>= HTTP_STATUS_MULTIPLE_CHOICES
)
958 _cupsSetHTTPError(status
);
962 status
= httpUpdate(http
);
964 while (status
!= HTTP_STATUS_ERROR
&& http
->state
== HTTP_STATE_POST_RECV
);
969 DEBUG_printf(("1cupsWriteRequestData: Returning %d.\n", status
));
974 DEBUG_puts("1cupsWriteRequestData: Returning HTTP_STATUS_CONTINUE.");
975 return (HTTP_STATUS_CONTINUE
);
980 * '_cupsConnect()' - Get the default server connection...
983 http_t
* /* O - HTTP connection */
986 _cups_globals_t
*cg
= _cupsGlobals(); /* Pointer to library globals */
990 * See if we are connected to the same server...
996 * Compare the connection hostname, port, and encryption settings to
997 * the cached defaults; these were initialized the first time we
1001 if (strcmp(cg
->http
->hostname
, cg
->server
) ||
1003 (httpAddrFamily(cg
->http
->hostaddr
) != AF_LOCAL
&& cg
->ipp_port
!= httpAddrPort(cg
->http
->hostaddr
)) ||
1005 cg
->ipp_port
!= httpAddrPort(cg
->http
->hostaddr
) ||
1006 #endif /* AF_LOCAL */
1007 (cg
->http
->encryption
!= cg
->encryption
&&
1008 cg
->http
->encryption
== HTTP_ENCRYPTION_NEVER
))
1011 * Need to close the current connection because something has changed...
1014 httpClose(cg
->http
);
1020 * Same server, see if the connection is still established...
1023 char ch
; /* Connection check byte */
1024 ssize_t n
; /* Number of bytes */
1027 if ((n
= recv(cg
->http
->fd
, &ch
, 1, MSG_PEEK
)) == 0 ||
1028 (n
< 0 && WSAGetLastError() != WSAEWOULDBLOCK
))
1030 if ((n
= recv(cg
->http
->fd
, &ch
, 1, MSG_PEEK
| MSG_DONTWAIT
)) == 0 ||
1031 (n
< 0 && errno
!= EWOULDBLOCK
))
1035 * Nope, close the connection...
1038 httpClose(cg
->http
);
1045 * (Re)connect as needed...
1050 if ((cg
->http
= httpConnect2(cupsServer(), ippPort(), NULL
, AF_UNSPEC
,
1051 cupsEncryption(), 1, 30000, NULL
)) == NULL
)
1054 _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE
, NULL
, 0);
1056 _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE
,
1057 _("Unable to connect to host."), 1);
1062 * Return the cached connection...
1070 * '_cupsSetError()' - Set the last IPP status code and status-message.
1074 _cupsSetError(ipp_status_t status
, /* I - IPP status code */
1075 const char *message
, /* I - status-message value */
1076 int localize
) /* I - Localize the message? */
1078 _cups_globals_t
*cg
; /* Global data */
1081 if (!message
&& errno
)
1083 message
= strerror(errno
);
1087 cg
= _cupsGlobals();
1088 cg
->last_error
= status
;
1090 if (cg
->last_status_message
)
1092 _cupsStrFree(cg
->last_status_message
);
1094 cg
->last_status_message
= NULL
;
1102 * Get the message catalog...
1105 if (!cg
->lang_default
)
1106 cg
->lang_default
= cupsLangDefault();
1108 cg
->last_status_message
= _cupsStrAlloc(_cupsLangString(cg
->lang_default
,
1112 cg
->last_status_message
= _cupsStrAlloc(message
);
1115 DEBUG_printf(("4_cupsSetError: last_error=%s, last_status_message=\"%s\"",
1116 ippErrorString(cg
->last_error
), cg
->last_status_message
));
1121 * '_cupsSetHTTPError()' - Set the last error using the HTTP status.
1125 _cupsSetHTTPError(http_status_t status
) /* I - HTTP status code */
1129 case HTTP_STATUS_NOT_FOUND
:
1130 _cupsSetError(IPP_STATUS_ERROR_NOT_FOUND
, httpStatus(status
), 0);
1133 case HTTP_STATUS_UNAUTHORIZED
:
1134 _cupsSetError(IPP_STATUS_ERROR_NOT_AUTHENTICATED
, httpStatus(status
), 0);
1137 case HTTP_STATUS_CUPS_AUTHORIZATION_CANCELED
:
1138 _cupsSetError(IPP_STATUS_ERROR_CUPS_AUTHENTICATION_CANCELED
, httpStatus(status
), 0);
1141 case HTTP_STATUS_FORBIDDEN
:
1142 _cupsSetError(IPP_STATUS_ERROR_FORBIDDEN
, httpStatus(status
), 0);
1145 case HTTP_STATUS_BAD_REQUEST
:
1146 _cupsSetError(IPP_STATUS_ERROR_BAD_REQUEST
, httpStatus(status
), 0);
1149 case HTTP_STATUS_REQUEST_TOO_LARGE
:
1150 _cupsSetError(IPP_STATUS_ERROR_REQUEST_VALUE
, httpStatus(status
), 0);
1153 case HTTP_STATUS_NOT_IMPLEMENTED
:
1154 _cupsSetError(IPP_STATUS_ERROR_OPERATION_NOT_SUPPORTED
, httpStatus(status
), 0);
1157 case HTTP_STATUS_NOT_SUPPORTED
:
1158 _cupsSetError(IPP_STATUS_ERROR_VERSION_NOT_SUPPORTED
, httpStatus(status
), 0);
1161 case HTTP_STATUS_UPGRADE_REQUIRED
:
1162 _cupsSetError(IPP_STATUS_ERROR_CUPS_UPGRADE_REQUIRED
, httpStatus(status
), 0);
1165 case HTTP_STATUS_CUPS_PKI_ERROR
:
1166 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
, httpStatus(status
), 0);
1169 case HTTP_STATUS_ERROR
:
1170 _cupsSetError(IPP_STATUS_ERROR_INTERNAL
, strerror(errno
), 0);
1174 DEBUG_printf(("4_cupsSetHTTPError: HTTP error %d mapped to "
1175 "IPP_STATUS_ERROR_SERVICE_UNAVAILABLE!", status
));
1176 _cupsSetError(IPP_STATUS_ERROR_SERVICE_UNAVAILABLE
, httpStatus(status
), 0);