cups/request.c

   1 /*
   2  * "$Id: request.c 7460 2008-04-16 02:19:54Z mike $"
   3  *
   4  *   IPP utilities for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 2007-2008 by Apple Inc.
   7  *   Copyright 1997-2007 by Easy Software Products.
   8  *
   9  *   These coded instructions, statements, and computer programs are the
  10  *   property of Apple Inc. and are protected by Federal copyright
  11  *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  12  *   which should have been included with this file.  If this file is
  13  *   file is missing or damaged, see the license at "http://www.cups.org/".
  14  *
  15  *   This file is subject to the Apple OS-Developed Software exception.
  16  *
  17  * Contents:
  18  *
  19  *   cupsDoFileRequest()    - Do an IPP request with a file.
  20  *   cupsDoIORequest()      - Do an IPP request with file descriptors.
  21  *   cupsDoRequest()        - Do an IPP request.
  22  *   cupsGetResponse()      - Get a response to an IPP request.
  23  *   cupsReadResponseData() - Read additional data after the IPP response.
  24  *   cupsSendRequest()      - Send an IPP request.
  25  *   cupsWriteRequestData() - Write additional data after an IPP request.
  26  *   _cupsSetError()        - Set the last IPP status code and status-message.
  27  *   _cupsSetHTTPError()    - Set the last error using the HTTP status.
  28  */
  29
  30 /*
  31  * Include necessary headers...
  32  */
  33
  34 #include "globals.h"
  35 #include "debug.h"
  36 #include <stdlib.h>
  37 #include <errno.h>
  38 #include <fcntl.h>
  39 #include <sys/stat.h>
  40 #if defined(WIN32) || defined(__EMX__)
  41 #  include <io.h>
  42 #else
  43 #  include <unistd.h>
  44 #endif /* WIN32 || __EMX__ */
  45 #ifndef O_BINARY
  46 #  define O_BINARY 0
  47 #endif /* O_BINARY */
  48
  49
  50 /*
  51  * 'cupsDoFileRequest()' - Do an IPP request with a file.
  52  *
  53  * This function sends the IPP request to the specified server, retrying
  54  * and authenticating as necessary.  The request is freed with @link ippDelete@
  55  * after receiving a valid IPP response.
  56  */
  57
  58 ipp_t *                                 /* O - Response data */
  59 cupsDoFileRequest(http_t     *http,     /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
  60                   ipp_t      *request,  /* I - IPP request */
  61                   const char *resource, /* I - HTTP resource for POST */
  62                   const char *filename) /* I - File to send or @code NULL@ for none */
  63 {
  64   ipp_t         *response;              /* IPP response data */
  65   int           infile;                 /* Input file */
  66
  67
  68   DEBUG_printf(("cupsDoFileRequest(http=%p, request=%p(%s), resource=\"%s\", "
  69                 "filename=\"%s\")\n", http, request,
  70                 request ? ippOpString(request->request.op.operation_id) : "?",
  71                 resource ? resource : "(null)",
  72                 filename ? filename : "(null)"));
  73
  74   if (filename)
  75   {
  76     if ((infile = open(filename, O_RDONLY | O_BINARY)) < 0)
  77     {
  78      /*
  79       * Can't get file information!
  80       */
  81
  82       _cupsSetError(errno == ENOENT ? IPP_NOT_FOUND : IPP_NOT_AUTHORIZED,
  83                     strerror(errno));
  84
  85       ippDelete(request);
  86
  87       return (NULL);
  88     }
  89   }
  90   else
  91     infile = -1;
  92
  93   response = cupsDoIORequest(http, request, resource, infile, -1);
  94
  95   if (infile >= 0)
  96     close(infile);
  97
  98   return (response);
  99 }
 100
 101
 102 /*
 103  * 'cupsDoIORequest()' - Do an IPP request with file descriptors.
 104  *
 105  * This function sends the IPP request to the specified server, retrying
 106  * and authenticating as necessary.  The request is freed with ippDelete()
 107  * after receiving a valid IPP response.
 108  *
 109  * If "infile" is a valid file descriptor, cupsDoIORequest() copies
 110  * all of the data from the file after the IPP request message.
 111  *
 112  * If "outfile" is a valid file descriptor, cupsDoIORequest() copies
 113  * all of the data after the IPP response message to the file.
 114  *
 115  * @since CUPS 1.3@
 116  */
 117
 118 ipp_t *                                 /* O - Response data */
 119 cupsDoIORequest(http_t     *http,       /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
 120                 ipp_t      *request,    /* I - IPP request */
 121                 const char *resource,   /* I - HTTP resource for POST */
 122                 int        infile,      /* I - File to read from or -1 for none */
 123                 int        outfile)     /* I - File to write to or -1 for none */
 124 {
 125   ipp_t         *response = NULL;       /* IPP response data */
 126   size_t        length = 0;             /* Content-Length value */
 127   http_status_t status;                 /* Status of HTTP request */
 128   struct stat   fileinfo;               /* File information */
 129   int           bytes;                  /* Number of bytes read/written */
 130   char          buffer[32768];          /* Output buffer */
 131
 132
 133   DEBUG_printf(("cupsDoIORequest(http=%p, request=%p(%s), resource=\"%s\", "
 134                 "infile=%d, outfile=%d)\n", http, request,
 135                 request ? ippOpString(request->request.op.operation_id) : "?",
 136                 resource ? resource : "(null)", infile, outfile));
 137
 138  /*
 139   * Range check input...
 140   */
 141
 142   if (!request || !resource)
 143   {
 144     ippDelete(request);
 145
 146     _cupsSetError(IPP_INTERNAL_ERROR, strerror(EINVAL));
 147
 148     return (NULL);
 149   }
 150
 151  /*
 152   * Get the default connection as needed...
 153   */
 154
 155   if (!http)
 156     if ((http = _cupsConnect()) == NULL)
 157       return (NULL);
 158
 159  /*
 160   * See if we have a file to send...
 161   */
 162
 163   if (infile >= 0)
 164   {
 165     if (fstat(infile, &fileinfo))
 166     {
 167      /*
 168       * Can't get file information!
 169       */
 170
 171       _cupsSetError(errno == EBADF ? IPP_NOT_FOUND : IPP_NOT_AUTHORIZED,
 172                     strerror(errno));
 173
 174       ippDelete(request);
 175
 176       return (NULL);
 177     }
 178
 179 #ifdef WIN32
 180     if (fileinfo.st_mode & _S_IFDIR)
 181 #else
 182     if (S_ISDIR(fileinfo.st_mode))
 183 #endif /* WIN32 */
 184     {
 185      /*
 186       * Can't send a directory...
 187       */
 188
 189       ippDelete(request);
 190
 191       _cupsSetError(IPP_NOT_POSSIBLE, strerror(EISDIR));
 192
 193       return (NULL);
 194     }
 195
 196 #ifndef WIN32
 197     if (!S_ISREG(fileinfo.st_mode))
 198       length = 0;                       /* Chunk when piping */
 199     else
 200 #endif /* !WIN32 */
 201     length = ippLength(request) + fileinfo.st_size;
 202   }
 203   else
 204     length = ippLength(request);
 205
 206  /*
 207   * Loop until we can send the request without authorization problems.
 208   */
 209
 210   while (response == NULL)
 211   {
 212     DEBUG_puts("cupsDoFileRequest: setup...");
 213
 214    /*
 215     * Send the request...
 216     */
 217
 218     status = cupsSendRequest(http, request, resource, length);
 219
 220     DEBUG_printf(("cupsDoFileRequest: status=%d\n", status));
 221
 222     if (status == HTTP_CONTINUE && request->state == IPP_DATA && infile >= 0)
 223     {
 224       DEBUG_puts("cupsDoFileRequest: file write...");
 225
 226      /*
 227       * Send the file with the request...
 228       */
 229
 230 #ifndef WIN32
 231       if (S_ISREG(fileinfo.st_mode))
 232 #endif /* WIN32 */
 233       lseek(infile, 0, SEEK_SET);
 234
 235       while ((bytes = (int)read(infile, buffer, sizeof(buffer))) > 0)
 236       {
 237         if (httpCheck(http))
 238         {
 239           if ((status = httpUpdate(http)) != HTTP_CONTINUE)
 240             break;
 241         }
 242
 243         if (httpWrite2(http, buffer, bytes) < bytes)
 244           break;
 245       }
 246     }
 247
 248    /*
 249     * Get the server's response...
 250     */
 251
 252     if (status == HTTP_CONTINUE || status == HTTP_OK)
 253     {
 254       response = cupsGetResponse(http, resource);
 255       status   = http->status;
 256     }
 257
 258     if (status == HTTP_FORBIDDEN)
 259       break;
 260
 261     if (response)
 262     {
 263       if (outfile >= 0)
 264       {
 265        /*
 266         * Write trailing data to file...
 267         */
 268
 269         while ((bytes = (int)httpRead2(http, buffer, sizeof(buffer))) > 0)
 270           if (write(outfile, buffer, bytes) < bytes)
 271             break;
 272       }
 273       else
 274       {
 275        /*
 276         * Flush any remaining data...
 277         */
 278
 279         httpFlush(http);
 280       }
 281     }
 282   }
 283
 284  /*
 285   * Delete the original request and return the response...
 286   */
 287
 288   ippDelete(request);
 289
 290   return (response);
 291 }
 292
 293
 294 /*
 295  * 'cupsDoRequest()' - Do an IPP request.
 296  *
 297  * This function sends the IPP request to the specified server, retrying
 298  * and authenticating as necessary.  The request is freed with ippDelete()
 299  * after receiving a valid IPP response.
 300  */
 301
 302 ipp_t *                                 /* O - Response data */
 303 cupsDoRequest(http_t     *http,         /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
 304               ipp_t      *request,      /* I - IPP request */
 305               const char *resource)     /* I - HTTP resource for POST */
 306 {
 307   DEBUG_printf(("cupsDoRequest(http=%p, request=%p(%s), resource=\"%s\")\n",
 308                 http, request,
 309                 request ? ippOpString(request->request.op.operation_id) : "?",
 310                 resource ? resource : "(null)"));
 311
 312   return (cupsDoFileRequest(http, request, resource, NULL));
 313 }
 314
 315
 316 /*
 317  * 'cupsGetResponse()' - Get a response to an IPP request.
 318  *
 319  * Use this function to get the response for an IPP request sent using
 320  * cupsSendDocument() or cupsSendRequest(). For requests that return
 321  * additional data, use httpRead() after getting a successful response.
 322  *
 323  * @since CUPS 1.4@
 324  */
 325
 326 ipp_t *                                 /* O - Response or @code NULL@ on HTTP error */
 327 cupsGetResponse(http_t     *http,       /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
 328                 const char *resource)   /* I - HTTP resource for POST */
 329 {
 330   http_status_t status;                 /* HTTP status */
 331   ipp_state_t   state;                  /* IPP read state */
 332   ipp_t         *response = NULL;       /* IPP response */
 333
 334
 335   DEBUG_printf(("cupsGetReponse(http=%p, resource=\"%s\")\n", http,
 336                 resource ? resource : "(null)"));
 337
 338  /*
 339   * Connect to the default server as needed...
 340   */
 341
 342   if (!http)
 343     http = _cupsConnect();
 344
 345   if (!http || (http->state != HTTP_POST_RECV && http->state != HTTP_POST_SEND))
 346     return (NULL);
 347
 348  /*
 349   * Check for an unfinished chunked request...
 350   */
 351
 352   if (http->data_encoding == HTTP_ENCODE_CHUNKED)
 353   {
 354    /*
 355     * Send a 0-length chunk to finish off the request...
 356     */
 357
 358     DEBUG_puts("cupsGetResponse: Finishing chunked POST...");
 359
 360     if (httpWrite2(http, "", 0) < 0)
 361       return (NULL);
 362   }
 363
 364  /*
 365   * Wait for a response from the server...
 366   */
 367
 368   DEBUG_puts("cupsGetResponse: Update loop...");
 369
 370   while ((status = httpUpdate(http)) == HTTP_CONTINUE)
 371     /* Do nothing but update */;
 372
 373   DEBUG_printf(("cupsGetResponse: status=%d\n", status));
 374
 375   if (status == HTTP_OK)
 376   {
 377    /*
 378     * Get the IPP response...
 379     */
 380
 381     response = ippNew();
 382
 383     while ((state = ippRead(http, response)) != IPP_DATA)
 384       if (state == IPP_ERROR)
 385         break;
 386
 387     if (state == IPP_ERROR)
 388     {
 389      /*
 390       * Delete the response...
 391       */
 392
 393       DEBUG_puts("cupsGetResponse: IPP read error!");
 394
 395       ippDelete(response);
 396       response = NULL;
 397
 398       _cupsSetError(IPP_SERVICE_UNAVAILABLE, strerror(errno));
 399     }
 400   }
 401   else if (status != HTTP_ERROR)
 402   {
 403    /*
 404     * Flush any error message...
 405     */
 406
 407     httpFlush(http);
 408
 409    /*
 410     * Then handle encryption and authentication...
 411     */
 412
 413     if (status == HTTP_UNAUTHORIZED)
 414     {
 415      /*
 416       * See if we can do authentication...
 417       */
 418
 419       int auth_result;
 420
 421       DEBUG_puts("cupsGetResponse: Need authorization...");
 422
 423       if ((auth_result = cupsDoAuthentication(http, "POST", resource)) == 0)
 424         httpReconnect(http);
 425       else if (auth_result < 0)
 426         http->status = status = HTTP_FORBIDDEN;
 427     }
 428
 429 #ifdef HAVE_SSL
 430     else if (status == HTTP_UPGRADE_REQUIRED)
 431     {
 432      /*
 433       * Force a reconnect with encryption...
 434       */
 435
 436       DEBUG_puts("cupsGetResponse: Need encryption...");
 437
 438       if (!httpReconnect(http))
 439         httpEncryption(http, HTTP_ENCRYPT_REQUIRED);
 440     }
 441 #endif /* HAVE_SSL */
 442   }
 443
 444   if (response)
 445   {
 446     ipp_attribute_t     *attr;          /* status-message attribute */
 447
 448
 449     attr = ippFindAttribute(response, "status-message", IPP_TAG_TEXT);
 450
 451     DEBUG_printf(("cupsGetResponse: status-code=%s, status-message=\"%s\"\n",
 452                   ippErrorString(response->request.status.status_code),
 453                   attr ? attr->values[0].string.text : ""));
 454
 455     _cupsSetError(response->request.status.status_code,
 456                    attr ? attr->values[0].string.text :
 457                        ippErrorString(response->request.status.status_code));
 458   }
 459   else if (status != HTTP_OK)
 460     _cupsSetHTTPError(status);
 461
 462   return (response);
 463 }
 464
 465
 466 /*
 467  * 'cupsReadResponseData()' - Read additional data after the IPP response.
 468  *
 469  * This function is used after cupsGetResponse() to read the PPD or document
 470  * files for CUPS_GET_PPD and CUPS_GET_DOCUMENT requests, respectively.
 471  *
 472  * @since CUPS 1.4@
 473  */
 474
 475 ssize_t                                 /* O - Bytes read, 0 on EOF, -1 on error */
 476 cupsReadResponseData(
 477     http_t *http,                       /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
 478     char   *buffer,                     /* I - Buffer to use */
 479     size_t length)                      /* I - Number of bytes to read */
 480 {
 481  /*
 482   * Get the default connection as needed...
 483   */
 484
 485   DEBUG_printf(("cupsReadResponseData(http=%p, buffer=%p, "
 486                 "length=" CUPS_LLFMT ")\n", http, buffer, CUPS_LLCAST length));
 487
 488   if (!http)
 489   {
 490     _cups_globals_t *cg = _cupsGlobals();
 491                                         /* Pointer to library globals */
 492
 493     if ((http = cg->http) == NULL)
 494     {
 495       _cupsSetError(IPP_INTERNAL_ERROR, "No active connection");
 496       return (-1);
 497     }
 498   }
 499
 500  /*
 501   * Then read from the HTTP connection...
 502   */
 503
 504   return (httpRead2(http, buffer, length));
 505 }
 506
 507
 508 /*
 509  * 'cupsSendRequest()' - Send an IPP request.
 510  *
 511  * Use httpWrite() to write any additional data (document, PPD file, etc.)
 512  * for the request, cupsGetResponse() to get the IPP response, and httpRead()
 513  * to read any additional data following the response. Only one request can be
 514  * sent/queued at a time.
 515  *
 516  * Unlike cupsDoFileRequest(), cupsDoIORequest(), and cupsDoRequest(), the
 517  * request is not freed.
 518  *
 519  * @since CUPS 1.4@
 520  */
 521
 522 http_status_t                           /* O - Initial HTTP status */
 523 cupsSendRequest(http_t     *http,       /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
 524                 ipp_t      *request,    /* I - IPP request */
 525                 const char *resource,   /* I - Resource path */
 526                 size_t     length)      /* I - Length of data to follow or @code CUPS_LENGTH_VARIABLE@ */
 527 {
 528   http_status_t status;                 /* Status of HTTP request */
 529   int           got_status;             /* Did we get the status? */
 530   ipp_state_t   state;                  /* State of IPP processing */
 531   http_status_t expect;                 /* Expect: header to use */
 532
 533
 534   DEBUG_printf(("cupsSendRequest(http=%p, request=%p(%s), resource=\"%s\", "
 535                 "length=" CUPS_LLFMT ")\n", http, request,
 536                 request ? ippOpString(request->request.op.operation_id) : "?",
 537                 resource ? resource : "(null)", CUPS_LLCAST length));
 538
 539  /*
 540   * Range check input...
 541   */
 542
 543   if (!request || !resource)
 544   {
 545     _cupsSetError(IPP_INTERNAL_ERROR, strerror(EINVAL));
 546
 547     return (HTTP_ERROR);
 548   }
 549
 550  /*
 551   * Get the default connection as needed...
 552   */
 553
 554   if (!http)
 555     if ((http = _cupsConnect()) == NULL)
 556       return (HTTP_SERVICE_UNAVAILABLE);
 557
 558 #ifdef HAVE_SSL
 559  /*
 560   * See if we have an auth-info attribute and are communicating over
 561   * a non-local link.  If so, encrypt the link so that we can pass
 562   * the authentication information securely...
 563   */
 564
 565   if (ippFindAttribute(request, "auth-info", IPP_TAG_TEXT) &&
 566       !httpAddrLocalhost(http->hostaddr) && !http->tls &&
 567       httpEncryption(http, HTTP_ENCRYPT_REQUIRED))
 568     return (HTTP_ERROR);
 569 #endif /* HAVE_SSL */
 570
 571  /*
 572   * Loop until we can send the request without authorization problems.
 573   */
 574
 575   status = HTTP_ERROR;
 576   expect = HTTP_CONTINUE;
 577
 578   for (;;)
 579   {
 580     DEBUG_puts("cupsSendRequest: Setup...");
 581
 582    /*
 583     * Setup the HTTP variables needed...
 584     */
 585
 586     httpClearFields(http);
 587     httpSetLength(http, length);
 588     httpSetField(http, HTTP_FIELD_CONTENT_TYPE, "application/ipp");
 589     httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring);
 590     httpSetExpect(http, expect);
 591
 592     DEBUG_printf(("cupsSendRequest: authstring=\"%s\"\n", http->authstring));
 593
 594    /*
 595     * Try the request...
 596     */
 597
 598     DEBUG_puts("cupsSendRequest: Sending HTTP POST...");
 599
 600     if (httpPost(http, resource))
 601     {
 602       if (httpReconnect(http))
 603         return (HTTP_ERROR);
 604       else
 605         continue;
 606     }
 607
 608    /*
 609     * Send the IPP data...
 610     */
 611
 612     DEBUG_puts("cupsSendRequest: Writing IPP request...");
 613
 614     request->state = IPP_IDLE;
 615     status         = HTTP_CONTINUE;
 616     got_status     = 0;
 617
 618     while ((state = ippWrite(http, request)) != IPP_DATA)
 619       if (state == IPP_ERROR)
 620         break;
 621       else if (httpCheck(http))
 622       {
 623         got_status = 1;
 624
 625         if ((status = httpUpdate(http)) != HTTP_CONTINUE)
 626           break;
 627       }
 628
 629    /*
 630     * Wait up to 1 second to get the 100-continue response as needed...
 631     */
 632
 633     if (!got_status && expect == HTTP_CONTINUE)
 634     {
 635       DEBUG_puts("cupsSendRequest: Waiting for 100-continue...");
 636
 637       if (httpWait(http, 1000))
 638         status = httpUpdate(http);
 639       else
 640         status = HTTP_EXPECTATION_FAILED;
 641     }
 642     else if (httpCheck(http))
 643       status = httpUpdate(http);
 644
 645     DEBUG_printf(("cupsSendRequest: status=%d\n", status));
 646
 647    /*
 648     * Process the current HTTP status...
 649     */
 650
 651     switch (status)
 652     {
 653       case HTTP_ERROR :
 654       case HTTP_CONTINUE :
 655       case HTTP_OK :
 656           return (status);
 657
 658       case HTTP_UNAUTHORIZED :
 659           if (!cupsDoAuthentication(http, "POST", resource))
 660             if (httpReconnect(http))
 661               return (HTTP_ERROR);
 662
 663           return (status);
 664
 665 #ifdef HAVE_SSL
 666       case HTTP_UPGRADE_REQUIRED :
 667          /*
 668           * Flush any error message, reconnect, and then upgrade with
 669           * encryption...
 670           */
 671
 672           if (httpReconnect(http))
 673             return (HTTP_ERROR);
 674
 675           httpEncryption(http, HTTP_ENCRYPT_REQUIRED);
 676
 677           return (status);
 678 #endif /* HAVE_SSL */
 679
 680       case HTTP_EXPECTATION_FAILED :
 681          /*
 682           * Don't try using the Expect: header the next time around...
 683           */
 684
 685           expect = (http_status_t)0;
 686           break;
 687
 688       default :
 689          /*
 690           * Some other error...
 691           */
 692
 693           return (status);
 694     }
 695   }
 696 }
 697
 698
 699 /*
 700  * 'cupsWriteRequestData()' - Write additional data after an IPP request.
 701  *
 702  * This function is used after @link cupsSendRequest@ to provide a PPD and
 703  * after @link cupsStartDocument@ to provide a document file.
 704  *
 705  * @since CUPS 1.4@
 706  */
 707
 708 http_status_t                           /* O - @code HTTP_CONTINUE@ if OK or HTTP status on error */
 709 cupsWriteRequestData(
 710     http_t     *http,                   /* I - Connection to server or @code CUPS_HTTP_DEFAULT@ */
 711     const char *buffer,                 /* I - Bytes to write */
 712     size_t     length)                  /* I - Number of bytes to write */
 713 {
 714  /*
 715   * Get the default connection as needed...
 716   */
 717
 718   DEBUG_printf(("cupsWriteRequestData(http=%p, buffer=%p, "
 719                 "length=" CUPS_LLFMT ")\n", http, buffer, CUPS_LLCAST length));
 720
 721   if (!http)
 722   {
 723     _cups_globals_t *cg = _cupsGlobals();
 724                                         /* Pointer to library globals */
 725
 726     if ((http = cg->http) == NULL)
 727     {
 728       _cupsSetError(IPP_INTERNAL_ERROR, "No active connection");
 729       return (HTTP_ERROR);
 730     }
 731   }
 732
 733  /*
 734   * Then write to the HTTP connection...
 735   */
 736
 737   if (httpWrite2(http, buffer, length) < 0)
 738     return (HTTP_ERROR);
 739
 740  /*
 741   * Finally, check if we have any pending data from the server...
 742   */
 743
 744   if (httpCheck(http))
 745     return (httpUpdate(http));
 746   else
 747     return (HTTP_CONTINUE);
 748 }
 749
 750
 751 /*
 752  * '_cupsSetError()' - Set the last IPP status code and status-message.
 753  */
 754
 755 void
 756 _cupsSetError(ipp_status_t status,      /* I - IPP status code */
 757                const char   *message)   /* I - status-message value */
 758 {
 759   _cups_globals_t       *cg;            /* Global data */
 760
 761
 762   cg             = _cupsGlobals();
 763   cg->last_error = status;
 764
 765   if (cg->last_status_message)
 766   {
 767     free(cg->last_status_message);
 768
 769     cg->last_status_message = NULL;
 770   }
 771
 772   if (message)
 773     cg->last_status_message = strdup(message);
 774
 775   DEBUG_printf(("_cupsSetError: last_error=%s, last_status_message=\"%s\"\n",
 776                 ippErrorString(cg->last_error), message ? message : ""));
 777 }
 778
 779
 780 /*
 781  * '_cupsSetHTTPError()' - Set the last error using the HTTP status.
 782  */
 783
 784 void
 785 _cupsSetHTTPError(http_status_t status) /* I - HTTP status code */
 786 {
 787   switch (status)
 788   {
 789     case HTTP_NOT_FOUND :
 790         _cupsSetError(IPP_NOT_FOUND, httpStatus(status));
 791         break;
 792
 793     case HTTP_UNAUTHORIZED :
 794         _cupsSetError(IPP_NOT_AUTHORIZED, httpStatus(status));
 795         break;
 796
 797     case HTTP_FORBIDDEN :
 798         _cupsSetError(IPP_FORBIDDEN, httpStatus(status));
 799         break;
 800
 801     case HTTP_BAD_REQUEST :
 802         _cupsSetError(IPP_BAD_REQUEST, httpStatus(status));
 803         break;
 804
 805     case HTTP_REQUEST_TOO_LARGE :
 806         _cupsSetError(IPP_REQUEST_VALUE, httpStatus(status));
 807         break;
 808
 809     case HTTP_NOT_IMPLEMENTED :
 810         _cupsSetError(IPP_OPERATION_NOT_SUPPORTED, httpStatus(status));
 811         break;
 812
 813     case HTTP_NOT_SUPPORTED :
 814         _cupsSetError(IPP_VERSION_NOT_SUPPORTED, httpStatus(status));
 815         break;
 816
 817     default :
 818         DEBUG_printf(("HTTP error %d mapped to IPP_SERVICE_UNAVAILABLE!\n",
 819                       status));
 820         _cupsSetError(IPP_SERVICE_UNAVAILABLE, httpStatus(status));
 821         break;
 822   }
 823 }
 824
 825
 826 /*
 827  * End of "$Id: request.c 7460 2008-04-16 02:19:54Z mike $".
 828  */