source3/printing/print_cups.c

   1 /*
   2  * Support code for the Common UNIX Printing System ("CUPS")
   3  *
   4  * Copyright 1999-2003 by Michael R Sweet.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 #include "printing.h"
  22
  23 #ifdef HAVE_CUPS
  24 #include <cups/cups.h>
  25 #include <cups/language.h>
  26
  27
  28 /*
  29  * CUPS printing interface definitions...
  30  */
  31
  32 static int cups_job_delete(int snum, struct printjob *pjob);
  33 static int cups_job_pause(int snum, struct printjob *pjob);
  34 static int cups_job_resume(int snum, struct printjob *pjob);
  35 static int cups_job_submit(int snum, struct printjob *pjob);
  36 static int cups_queue_get(int snum, print_queue_struct **q,
  37                           print_status_struct *status);
  38 static int cups_queue_pause(int snum);
  39 static int cups_queue_resume(int snum);
  40
  41
  42 struct printif  cups_printif =
  43                 {
  44                   cups_queue_get,
  45                   cups_queue_pause,
  46                   cups_queue_resume,
  47                   cups_job_delete,
  48                   cups_job_pause,
  49                   cups_job_resume,
  50                   cups_job_submit,
  51                 };
  52
  53 /*
  54  * 'cups_passwd_cb()' - The CUPS password callback...
  55  */
  56
  57 static const char *                             /* O - Password or NULL */
  58 cups_passwd_cb(const char *prompt)      /* I - Prompt */
  59 {
  60  /*
  61   * Always return NULL to indicate that no password is available...
  62   */
  63
  64   return (NULL);
  65 }
  66
  67
  68 /*
  69  * 'cups_printer_fn()' - Call a function for every printer known to the
  70  *                       system.
  71  */
  72
  73 void cups_printer_fn(void (*fn)(char *, char *))
  74 {
  75         /* I - Function to call */
  76         http_t          *http;          /* HTTP connection to server */
  77         ipp_t           *request,       /* IPP Request */
  78                         *response;      /* IPP Response */
  79         ipp_attribute_t *attr;          /* Current attribute */
  80         cups_lang_t     *language;      /* Default language */
  81         char            *name,          /* printer-name attribute */
  82                         *make_model,    /* printer-make-and-model attribute */
  83                         *info;          /* printer-info attribute */
  84         static const char *requested[] =/* Requested attributes */
  85                         {
  86                           "printer-name",
  87                           "printer-make-and-model",
  88                           "printer-info"
  89                         };
  90
  91
  92         DEBUG(5,("cups_printer_fn(%p)\n", fn));
  93
  94        /*
  95         * Make sure we don't ask for passwords...
  96         */
  97
  98         cupsSetPasswordCB(cups_passwd_cb);
  99
 100        /*
 101         * Try to connect to the server...
 102         */
 103
 104         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 105         {
 106                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 107                          cupsServer(), strerror(errno)));
 108                 return;
 109         }
 110
 111        /*
 112         * Build a CUPS_GET_PRINTERS request, which requires the following
 113         * attributes:
 114         *
 115         *    attributes-charset
 116         *    attributes-natural-language
 117         *    requested-attributes
 118         */
 119
 120         request = ippNew();
 121
 122         request->request.op.operation_id = CUPS_GET_PRINTERS;
 123         request->request.op.request_id   = 1;
 124
 125         language = cupsLangDefault();
 126
 127         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 128                      "attributes-charset", NULL, cupsLangEncoding(language));
 129
 130         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 131                      "attributes-natural-language", NULL, language->language);
 132
 133         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 134                       "requested-attributes",
 135                       (sizeof(requested) / sizeof(requested[0])),
 136                       NULL, requested);
 137
 138        /*
 139         * Do the request and get back a response...
 140         */
 141
 142         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 143         {
 144                 DEBUG(0,("Unable to get printer list - %s\n",
 145                          ippErrorString(cupsLastError())));
 146                 httpClose(http);
 147                 return;
 148         }
 149
 150         for (attr = response->attrs; attr != NULL;)
 151         {
 152                /*
 153                 * Skip leading attributes until we hit a printer...
 154                 */
 155
 156                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 157                         attr = attr->next;
 158
 159                 if (attr == NULL)
 160                         break;
 161
 162                /*
 163                 * Pull the needed attributes from this printer...
 164                 */
 165
 166                 name       = NULL;
 167                 make_model = NULL;
 168                 info       = NULL;
 169
 170                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
 171                 {
 172                         if (strcmp(attr->name, "printer-name") == 0 &&
 173                             attr->value_tag == IPP_TAG_NAME)
 174                                 name = attr->values[0].string.text;
 175
 176                         if (strcmp(attr->name, "printer-make-and-model") == 0 &&
 177                             attr->value_tag == IPP_TAG_TEXT)
 178                                 make_model = attr->values[0].string.text;
 179
 180                         if (strcmp(attr->name, "printer-info") == 0 &&
 181                             attr->value_tag == IPP_TAG_TEXT)
 182                                 info = attr->values[0].string.text;
 183
 184                         attr = attr->next;
 185                 }
 186
 187                /*
 188                 * See if we have everything needed...
 189                 */
 190
 191                 if (name == NULL)
 192                         break;
 193
 194                 if (info == NULL || !info[0])
 195                         (*fn)(name, make_model);
 196                 else
 197                         (*fn)(name, info);
 198
 199
 200         }
 201
 202         ippDelete(response);
 203
 204
 205        /*
 206         * Build a CUPS_GET_CLASSES request, which requires the following
 207         * attributes:
 208         *
 209         *    attributes-charset
 210         *    attributes-natural-language
 211         *    requested-attributes
 212         */
 213
 214         request = ippNew();
 215
 216         request->request.op.operation_id = CUPS_GET_CLASSES;
 217         request->request.op.request_id   = 1;
 218
 219         language = cupsLangDefault();
 220
 221         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 222                      "attributes-charset", NULL, cupsLangEncoding(language));
 223
 224         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 225                      "attributes-natural-language", NULL, language->language);
 226
 227         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 228                       "requested-attributes",
 229                       (sizeof(requested) / sizeof(requested[0])),
 230                       NULL, requested);
 231
 232        /*
 233         * Do the request and get back a response...
 234         */
 235
 236         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 237         {
 238                 DEBUG(0,("Unable to get printer list - %s\n",
 239                          ippErrorString(cupsLastError())));
 240                 httpClose(http);
 241                 return;
 242         }
 243
 244         for (attr = response->attrs; attr != NULL;)
 245         {
 246                /*
 247                 * Skip leading attributes until we hit a printer...
 248                 */
 249
 250                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 251                         attr = attr->next;
 252
 253                 if (attr == NULL)
 254                         break;
 255
 256                /*
 257                 * Pull the needed attributes from this printer...
 258                 */
 259
 260                 name       = NULL;
 261                 make_model = NULL;
 262                 info       = NULL;
 263
 264                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
 265                 {
 266                         if (strcmp(attr->name, "printer-name") == 0 &&
 267                             attr->value_tag == IPP_TAG_NAME)
 268                                 name = attr->values[0].string.text;
 269
 270                         if (strcmp(attr->name, "printer-make-and-model") == 0 &&
 271                             attr->value_tag == IPP_TAG_TEXT)
 272                                 make_model = attr->values[0].string.text;
 273
 274                         if (strcmp(attr->name, "printer-info") == 0 &&
 275                             attr->value_tag == IPP_TAG_TEXT)
 276                                 info = attr->values[0].string.text;
 277
 278                         attr = attr->next;
 279                 }
 280
 281                /*
 282                 * See if we have everything needed...
 283                 */
 284
 285                 if (name == NULL)
 286                         break;
 287
 288                 if (info == NULL || !info[0])
 289                         (*fn)(name, make_model);
 290                 else
 291                         (*fn)(name, info);
 292
 293
 294         }
 295
 296         ippDelete(response);
 297
 298        /*
 299         * Close the connection to the server...
 300         */
 301
 302         httpClose(http);
 303 }
 304
 305
 306 /*
 307  * 'cups_printername_ok()' - Provide the equivalent of pcap_printername_ok()
 308  *                           for CUPS.
 309  * O - 1 if printer name OK
 310  * I - Name of printer
 311  */
 312 int cups_printername_ok(const char *name)
 313 {
 314         http_t          *http;          /* HTTP connection to server */
 315         ipp_t           *request,       /* IPP Request */
 316                         *response;      /* IPP Response */
 317         cups_lang_t     *language;      /* Default language */
 318         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 319
 320
 321         DEBUG(5,("cups_printername_ok(\"%s\")\n", name));
 322
 323        /*
 324         * Make sure we don't ask for passwords...
 325         */
 326
 327         cupsSetPasswordCB(cups_passwd_cb);
 328
 329        /*
 330         * Try to connect to the server...
 331         */
 332
 333         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 334         {
 335                 DEBUG(3,("Unable to connect to CUPS server %s - %s\n",
 336                          cupsServer(), strerror(errno)));
 337                 return (0);
 338         }
 339
 340        /*
 341         * Build an IPP_GET_PRINTER_ATTRS request, which requires the following
 342         * attributes:
 343         *
 344         *    attributes-charset
 345         *    attributes-natural-language
 346         *    requested-attributes
 347         *    printer-uri
 348         */
 349
 350         request = ippNew();
 351
 352         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
 353         request->request.op.request_id   = 1;
 354
 355         language = cupsLangDefault();
 356
 357         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 358                      "attributes-charset", NULL, cupsLangEncoding(language));
 359
 360         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 361                      "attributes-natural-language", NULL, language->language);
 362
 363         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 364                      "requested-attributes", NULL, "printer-uri");
 365
 366         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", name);
 367
 368         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 369                      "printer-uri", NULL, uri);
 370
 371        /*
 372         * Do the request and get back a response...
 373         */
 374
 375         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 376         {
 377                 DEBUG(3,("Unable to get printer status for %s - %s\n", name,
 378                          ippErrorString(cupsLastError())));
 379                 httpClose(http);
 380                 return (0);
 381         }
 382
 383         httpClose(http);
 384
 385         if (response->request.status.status_code >= IPP_OK_CONFLICT)
 386         {
 387                 DEBUG(3,("Unable to get printer status for %s - %s\n", name,
 388                          ippErrorString(response->request.status.status_code)));
 389                 ippDelete(response);
 390                 return (0);
 391         }
 392         else
 393         {
 394                 ippDelete(response);
 395                 return (1);
 396         }
 397 }
 398
 399
 400 /*
 401  * 'cups_job_delete()' - Delete a job.
 402  */
 403
 404 static int
 405 cups_job_delete(int snum, struct printjob *pjob)
 406 {
 407         int             ret;            /* Return value */
 408         http_t          *http;          /* HTTP connection to server */
 409         ipp_t           *request,       /* IPP Request */
 410                         *response;      /* IPP Response */
 411         cups_lang_t     *language;      /* Default language */
 412         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 413
 414
 415         DEBUG(5,("cups_job_delete(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 416
 417        /*
 418         * Make sure we don't ask for passwords...
 419         */
 420
 421         cupsSetPasswordCB(cups_passwd_cb);
 422
 423        /*
 424         * Try to connect to the server...
 425         */
 426
 427         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 428         {
 429                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 430                          cupsServer(), strerror(errno)));
 431                 return (1);
 432         }
 433
 434        /*
 435         * Build an IPP_CANCEL_JOB request, which requires the following
 436         * attributes:
 437         *
 438         *    attributes-charset
 439         *    attributes-natural-language
 440         *    job-uri
 441         *    requesting-user-name
 442         */
 443
 444         request = ippNew();
 445
 446         request->request.op.operation_id = IPP_CANCEL_JOB;
 447         request->request.op.request_id   = 1;
 448
 449         language = cupsLangDefault();
 450
 451         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 452                      "attributes-charset", NULL, cupsLangEncoding(language));
 453
 454         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 455                      "attributes-natural-language", NULL, language->language);
 456
 457         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 458
 459         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 460
 461         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 462                      NULL, pjob->user);
 463
 464        /*
 465         * Do the request and get back a response...
 466         */
 467
 468         ret = 1;
 469
 470         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL)
 471         {
 472           if (response->request.status.status_code >= IPP_OK_CONFLICT)
 473                 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 474                          ippErrorString(cupsLastError())));
 475           else
 476                 ret = 0;
 477
 478           ippDelete(response);
 479         }
 480         else
 481           DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 482                    ippErrorString(cupsLastError())));
 483
 484         httpClose(http);
 485
 486         return (ret);
 487 }
 488
 489
 490 /*
 491  * 'cups_job_pause()' - Pause a job.
 492  */
 493
 494 static int
 495 cups_job_pause(int snum, struct printjob *pjob)
 496 {
 497         int             ret;            /* Return value */
 498         http_t          *http;          /* HTTP connection to server */
 499         ipp_t           *request,       /* IPP Request */
 500                         *response;      /* IPP Response */
 501         cups_lang_t     *language;      /* Default language */
 502         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 503
 504
 505         DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 506
 507        /*
 508         * Make sure we don't ask for passwords...
 509         */
 510
 511         cupsSetPasswordCB(cups_passwd_cb);
 512
 513        /*
 514         * Try to connect to the server...
 515         */
 516
 517         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 518         {
 519                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 520                          cupsServer(), strerror(errno)));
 521                 return (1);
 522         }
 523
 524        /*
 525         * Build an IPP_HOLD_JOB request, which requires the following
 526         * attributes:
 527         *
 528         *    attributes-charset
 529         *    attributes-natural-language
 530         *    job-uri
 531         *    requesting-user-name
 532         */
 533
 534         request = ippNew();
 535
 536         request->request.op.operation_id = IPP_HOLD_JOB;
 537         request->request.op.request_id   = 1;
 538
 539         language = cupsLangDefault();
 540
 541         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 542                      "attributes-charset", NULL, cupsLangEncoding(language));
 543
 544         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 545                      "attributes-natural-language", NULL, language->language);
 546
 547         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 548
 549         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 550
 551         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 552                      NULL, pjob->user);
 553
 554        /*
 555         * Do the request and get back a response...
 556         */
 557
 558         ret = 1;
 559
 560         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL)
 561         {
 562           if (response->request.status.status_code >= IPP_OK_CONFLICT)
 563                 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 564                          ippErrorString(cupsLastError())));
 565           else
 566                 ret = 0;
 567
 568           ippDelete(response);
 569         }
 570         else
 571           DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 572                    ippErrorString(cupsLastError())));
 573
 574         httpClose(http);
 575
 576         return (ret);
 577 }
 578
 579
 580 /*
 581  * 'cups_job_resume()' - Resume a paused job.
 582  */
 583
 584 static int
 585 cups_job_resume(int snum, struct printjob *pjob)
 586 {
 587         int             ret;            /* Return value */
 588         http_t          *http;          /* HTTP connection to server */
 589         ipp_t           *request,       /* IPP Request */
 590                         *response;      /* IPP Response */
 591         cups_lang_t     *language;      /* Default language */
 592         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 593
 594
 595         DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 596
 597        /*
 598         * Make sure we don't ask for passwords...
 599         */
 600
 601         cupsSetPasswordCB(cups_passwd_cb);
 602
 603        /*
 604         * Try to connect to the server...
 605         */
 606
 607         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 608         {
 609                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 610                          cupsServer(), strerror(errno)));
 611                 return (1);
 612         }
 613
 614        /*
 615         * Build an IPP_RELEASE_JOB request, which requires the following
 616         * attributes:
 617         *
 618         *    attributes-charset
 619         *    attributes-natural-language
 620         *    job-uri
 621         *    requesting-user-name
 622         */
 623
 624         request = ippNew();
 625
 626         request->request.op.operation_id = IPP_RELEASE_JOB;
 627         request->request.op.request_id   = 1;
 628
 629         language = cupsLangDefault();
 630
 631         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 632                      "attributes-charset", NULL, cupsLangEncoding(language));
 633
 634         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 635                      "attributes-natural-language", NULL, language->language);
 636
 637         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 638
 639         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 640
 641         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 642                      NULL, pjob->user);
 643
 644        /*
 645         * Do the request and get back a response...
 646         */
 647
 648         ret = 1;
 649
 650         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL)
 651         {
 652           if (response->request.status.status_code >= IPP_OK_CONFLICT)
 653                 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 654                          ippErrorString(cupsLastError())));
 655           else
 656                 ret = 0;
 657
 658           ippDelete(response);
 659         }
 660         else
 661           DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 662                    ippErrorString(cupsLastError())));
 663
 664         httpClose(http);
 665
 666         return (ret);
 667 }
 668
 669
 670 /*
 671  * 'cups_job_submit()' - Submit a job for printing.
 672  */
 673
 674 static int
 675 cups_job_submit(int snum, struct printjob *pjob)
 676 {
 677         int             ret;            /* Return value */
 678         http_t          *http;          /* HTTP connection to server */
 679         ipp_t           *request,       /* IPP Request */
 680                         *response;      /* IPP Response */
 681         cups_lang_t     *language;      /* Default language */
 682         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 683
 684
 685         DEBUG(5,("cups_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 686
 687        /*
 688         * Make sure we don't ask for passwords...
 689         */
 690
 691         cupsSetPasswordCB(cups_passwd_cb);
 692
 693        /*
 694         * Try to connect to the server...
 695         */
 696
 697         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 698         {
 699                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 700                          cupsServer(), strerror(errno)));
 701                 return (1);
 702         }
 703
 704        /*
 705         * Build an IPP_PRINT_JOB request, which requires the following
 706         * attributes:
 707         *
 708         *    attributes-charset
 709         *    attributes-natural-language
 710         *    printer-uri
 711         *    requesting-user-name
 712         *    [document-data]
 713         */
 714
 715         request = ippNew();
 716
 717         request->request.op.operation_id = IPP_PRINT_JOB;
 718         request->request.op.request_id   = 1;
 719
 720         language = cupsLangDefault();
 721
 722         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 723                      "attributes-charset", NULL, cupsLangEncoding(language));
 724
 725         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 726                      "attributes-natural-language", NULL, language->language);
 727
 728         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
 729                  PRINTERNAME(snum));
 730
 731         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 732                      "printer-uri", NULL, uri);
 733
 734         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 735                      NULL, pjob->user);
 736
 737         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 738                      "job-originating-host-name", NULL,
 739                      get_remote_machine_name());
 740
 741         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
 742                      pjob->jobname);
 743
 744        /*
 745         * Do the request and get back a response...
 746         */
 747
 748         slprintf(uri, sizeof(uri) - 1, "/printers/%s", PRINTERNAME(snum));
 749
 750         ret = 1;
 751         if ((response = cupsDoFileRequest(http, request, uri,
 752                                           pjob->filename)) != NULL)
 753         {
 754                 if (response->request.status.status_code >= IPP_OK_CONFLICT)
 755                         DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
 756                                  ippErrorString(cupsLastError())));
 757                 else
 758                         ret = 0;
 759
 760                 ippDelete(response);
 761         }
 762         else
 763                 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
 764                          ippErrorString(cupsLastError())));
 765
 766         httpClose(http);
 767
 768         if ( ret == 0 )
 769                 unlink(pjob->filename);
 770         /* else print_job_end will do it for us */
 771
 772         return (ret);
 773 }
 774
 775
 776 /*
 777  * 'cups_queue_get()' - Get all the jobs in the print queue.
 778  */
 779
 780 static int
 781 cups_queue_get(int snum, print_queue_struct **q, print_status_struct *status)
 782 {
 783         http_t          *http;          /* HTTP connection to server */
 784         ipp_t           *request,       /* IPP Request */
 785                         *response;      /* IPP Response */
 786         ipp_attribute_t *attr;          /* Current attribute */
 787         cups_lang_t     *language;      /* Default language */
 788         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 789         int             qcount,         /* Number of active queue entries */
 790                         qalloc;         /* Number of queue entries allocated */
 791         print_queue_struct *queue,      /* Queue entries */
 792                         *temp;          /* Temporary pointer for queue */
 793         const char      *user_name,     /* job-originating-user-name attribute */
 794                         *job_name;      /* job-name attribute */
 795         int             job_id;         /* job-id attribute */
 796         int             job_k_octets;   /* job-k-octets attribute */
 797         time_t          job_time;       /* time-at-creation attribute */
 798         ipp_jstate_t    job_status;     /* job-status attribute */
 799         int             job_priority;   /* job-priority attribute */
 800         static const char *jattrs[] =   /* Requested job attributes */
 801                         {
 802                           "job-id",
 803                           "job-k-octets",
 804                           "job-name",
 805                           "job-originating-user-name",
 806                           "job-priority",
 807                           "job-state",
 808                           "time-at-creation",
 809                         };
 810         static const char *pattrs[] =   /* Requested printer attributes */
 811                         {
 812                           "printer-state",
 813                           "printer-state-message"
 814                         };
 815
 816
 817         DEBUG(5,("cups_queue_get(%d, %p, %p)\n", snum, q, status));
 818
 819        /*
 820         * Make sure we don't ask for passwords...
 821         */
 822
 823         cupsSetPasswordCB(cups_passwd_cb);
 824
 825        /*
 826         * Try to connect to the server...
 827         */
 828
 829         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 830         {
 831                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 832                          cupsServer(), strerror(errno)));
 833                 return (0);
 834         }
 835
 836        /*
 837         * Generate the printer URI...
 838         */
 839
 840         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
 841                  PRINTERNAME(snum));
 842
 843        /*
 844         * Build an IPP_GET_JOBS request, which requires the following
 845         * attributes:
 846         *
 847         *    attributes-charset
 848         *    attributes-natural-language
 849         *    requested-attributes
 850         *    printer-uri
 851         */
 852
 853         request = ippNew();
 854
 855         request->request.op.operation_id = IPP_GET_JOBS;
 856         request->request.op.request_id   = 1;
 857
 858         language = cupsLangDefault();
 859
 860         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 861                      "attributes-charset", NULL, cupsLangEncoding(language));
 862
 863         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 864                      "attributes-natural-language", NULL, language->language);
 865
 866         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 867                       "requested-attributes",
 868                       (sizeof(jattrs) / sizeof(jattrs[0])),
 869                       NULL, jattrs);
 870
 871         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 872                      "printer-uri", NULL, uri);
 873
 874        /*
 875         * Do the request and get back a response...
 876         */
 877
 878         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 879         {
 880                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
 881                          ippErrorString(cupsLastError())));
 882                 httpClose(http);
 883                 return (0);
 884         }
 885
 886         if (response->request.status.status_code >= IPP_OK_CONFLICT)
 887         {
 888                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
 889                          ippErrorString(response->request.status.status_code)));
 890                 ippDelete(response);
 891                 httpClose(http);
 892
 893                 return (0);
 894         }
 895
 896        /*
 897         * Process the jobs...
 898         */
 899
 900         qcount = 0;
 901         qalloc = 0;
 902         queue  = NULL;
 903
 904         for (attr = response->attrs; attr != NULL; attr = attr->next)
 905         {
 906                /*
 907                 * Skip leading attributes until we hit a job...
 908                 */
 909
 910                 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
 911                         attr = attr->next;
 912
 913                 if (attr == NULL)
 914                         break;
 915
 916                /*
 917                 * Allocate memory as needed...
 918                 */
 919                 if (qcount >= qalloc)
 920                 {
 921                         qalloc += 16;
 922
 923                         temp = Realloc(queue, sizeof(print_queue_struct) * qalloc);
 924
 925                         if (temp == NULL)
 926                         {
 927                                 DEBUG(0,("cups_queue_get: Not enough memory!"));
 928                                 ippDelete(response);
 929                                 httpClose(http);
 930
 931                                 SAFE_FREE(queue);
 932                                 return (0);
 933                         }
 934
 935                         queue = temp;
 936                 }
 937
 938                 temp = queue + qcount;
 939                 memset(temp, 0, sizeof(print_queue_struct));
 940
 941                /*
 942                 * Pull the needed attributes from this job...
 943                 */
 944
 945                 job_id       = 0;
 946                 job_priority = 50;
 947                 job_status   = IPP_JOB_PENDING;
 948                 job_time     = 0;
 949                 job_k_octets = 0;
 950                 user_name    = NULL;
 951                 job_name     = NULL;
 952
 953                 while (attr != NULL && attr->group_tag == IPP_TAG_JOB)
 954                 {
 955                         if (attr->name == NULL)
 956                         {
 957                                 attr = attr->next;
 958                                 break;
 959                         }
 960
 961                         if (strcmp(attr->name, "job-id") == 0 &&
 962                             attr->value_tag == IPP_TAG_INTEGER)
 963                                 job_id = attr->values[0].integer;
 964
 965                         if (strcmp(attr->name, "job-k-octets") == 0 &&
 966                             attr->value_tag == IPP_TAG_INTEGER)
 967                                 job_k_octets = attr->values[0].integer;
 968
 969                         if (strcmp(attr->name, "job-priority") == 0 &&
 970                             attr->value_tag == IPP_TAG_INTEGER)
 971                                 job_priority = attr->values[0].integer;
 972
 973                         if (strcmp(attr->name, "job-state") == 0 &&
 974                             attr->value_tag == IPP_TAG_ENUM)
 975                                 job_status = (ipp_jstate_t)(attr->values[0].integer);
 976
 977                         if (strcmp(attr->name, "time-at-creation") == 0 &&
 978                             attr->value_tag == IPP_TAG_INTEGER)
 979                                 job_time = attr->values[0].integer;
 980
 981                         if (strcmp(attr->name, "job-name") == 0 &&
 982                             attr->value_tag == IPP_TAG_NAME)
 983                                 job_name = attr->values[0].string.text;
 984
 985                         if (strcmp(attr->name, "job-originating-user-name") == 0 &&
 986                             attr->value_tag == IPP_TAG_NAME)
 987                                 user_name = attr->values[0].string.text;
 988
 989                         attr = attr->next;
 990                 }
 991
 992                /*
 993                 * See if we have everything needed...
 994                 */
 995
 996                 if (user_name == NULL || job_name == NULL || job_id == 0)
 997                 {
 998                   if (attr == NULL)
 999                     break;
1000                   else
1001                     continue;
1002                 }
1003
1004                 temp->job      = job_id;
1005                 temp->size     = job_k_octets * 1024;
1006                 temp->status   = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1007                                  job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1008                                  job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1009                                  LPQ_PRINTING;
1010                 temp->priority = job_priority;
1011                 temp->time     = job_time;
1012                 strncpy(temp->fs_user, user_name, sizeof(temp->fs_user) - 1);
1013                 strncpy(temp->fs_file, job_name, sizeof(temp->fs_file) - 1);
1014
1015                 qcount ++;
1016
1017                 if (attr == NULL)
1018                   break;
1019         }
1020
1021         ippDelete(response);
1022
1023        /*
1024         * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1025         * following attributes:
1026         *
1027         *    attributes-charset
1028         *    attributes-natural-language
1029         *    requested-attributes
1030         *    printer-uri
1031         */
1032
1033         request = ippNew();
1034
1035         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1036         request->request.op.request_id   = 1;
1037
1038         language = cupsLangDefault();
1039
1040         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1041                      "attributes-charset", NULL, cupsLangEncoding(language));
1042
1043         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1044                      "attributes-natural-language", NULL, language->language);
1045
1046         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1047                       "requested-attributes",
1048                       (sizeof(pattrs) / sizeof(pattrs[0])),
1049                       NULL, pattrs);
1050
1051         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1052                      "printer-uri", NULL, uri);
1053
1054        /*
1055         * Do the request and get back a response...
1056         */
1057
1058         if ((response = cupsDoRequest(http, request, "/")) == NULL)
1059         {
1060                 DEBUG(0,("Unable to get printer status for %s - %s\n", PRINTERNAME(snum),
1061                          ippErrorString(cupsLastError())));
1062                 httpClose(http);
1063                 *q = queue;
1064                 return (qcount);
1065         }
1066
1067         if (response->request.status.status_code >= IPP_OK_CONFLICT)
1068         {
1069                 DEBUG(0,("Unable to get printer status for %s - %s\n", PRINTERNAME(snum),
1070                          ippErrorString(response->request.status.status_code)));
1071                 ippDelete(response);
1072                 httpClose(http);
1073                 *q = queue;
1074                 return (qcount);
1075         }
1076
1077        /*
1078         * Get the current printer status and convert it to the SAMBA values.
1079         */
1080
1081         if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL)
1082         {
1083                 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1084                         status->status = LPSTAT_STOPPED;
1085                 else
1086                         status->status = LPSTAT_OK;
1087         }
1088
1089         if ((attr = ippFindAttribute(response, "printer-state-message",
1090                                      IPP_TAG_TEXT)) != NULL)
1091                 fstrcpy(status->message, attr->values[0].string.text);
1092
1093         ippDelete(response);
1094
1095        /*
1096         * Return the job queue...
1097         */
1098
1099         httpClose(http);
1100
1101         *q = queue;
1102         return (qcount);
1103 }
1104
1105
1106 /*
1107  * 'cups_queue_pause()' - Pause a print queue.
1108  */
1109
1110 static int
1111 cups_queue_pause(int snum)
1112 {
1113         extern userdom_struct current_user_info;
1114         int             ret;            /* Return value */
1115         http_t          *http;          /* HTTP connection to server */
1116         ipp_t           *request,       /* IPP Request */
1117                         *response;      /* IPP Response */
1118         cups_lang_t     *language;      /* Default language */
1119         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1120
1121
1122         DEBUG(5,("cups_queue_pause(%d)\n", snum));
1123
1124         /*
1125          * Make sure we don't ask for passwords...
1126          */
1127
1128         cupsSetPasswordCB(cups_passwd_cb);
1129
1130         /*
1131          * Try to connect to the server...
1132          */
1133
1134         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
1135         {
1136                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
1137                          cupsServer(), strerror(errno)));
1138                 return (1);
1139         }
1140
1141         /*
1142          * Build an IPP_PAUSE_PRINTER request, which requires the following
1143          * attributes:
1144          *
1145          *    attributes-charset
1146          *    attributes-natural-language
1147          *    printer-uri
1148          *    requesting-user-name
1149          */
1150
1151         request = ippNew();
1152
1153         request->request.op.operation_id = IPP_PAUSE_PRINTER;
1154         request->request.op.request_id   = 1;
1155
1156         language = cupsLangDefault();
1157
1158         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1159                      "attributes-charset", NULL, cupsLangEncoding(language));
1160
1161         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1162                      "attributes-natural-language", NULL, language->language);
1163
1164         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1165                  PRINTERNAME(snum));
1166
1167         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1168
1169         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1170                      NULL, current_user_info.unix_name);
1171
1172        /*
1173         * Do the request and get back a response...
1174         */
1175
1176         ret = 1;
1177
1178         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL)
1179         {
1180           if (response->request.status.status_code >= IPP_OK_CONFLICT)
1181                 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1182                          ippErrorString(cupsLastError())));
1183           else
1184                 ret = 0;
1185
1186           ippDelete(response);
1187         }
1188         else
1189           DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1190                    ippErrorString(cupsLastError())));
1191
1192         httpClose(http);
1193
1194         return (ret);
1195 }
1196
1197
1198 /*
1199  * 'cups_queue_resume()' - Restart a print queue.
1200  */
1201
1202 static int
1203 cups_queue_resume(int snum)
1204 {
1205         extern userdom_struct current_user_info;
1206         int             ret;            /* Return value */
1207         http_t          *http;          /* HTTP connection to server */
1208         ipp_t           *request,       /* IPP Request */
1209                         *response;      /* IPP Response */
1210         cups_lang_t     *language;      /* Default language */
1211         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1212
1213
1214         DEBUG(5,("cups_queue_resume(%d)\n", snum));
1215
1216        /*
1217         * Make sure we don't ask for passwords...
1218         */
1219
1220         cupsSetPasswordCB(cups_passwd_cb);
1221
1222        /*
1223         * Try to connect to the server...
1224         */
1225
1226         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
1227         {
1228                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
1229                          cupsServer(), strerror(errno)));
1230                 return (1);
1231         }
1232
1233        /*
1234         * Build an IPP_RESUME_PRINTER request, which requires the following
1235         * attributes:
1236         *
1237         *    attributes-charset
1238         *    attributes-natural-language
1239         *    printer-uri
1240         *    requesting-user-name
1241         */
1242
1243         request = ippNew();
1244
1245         request->request.op.operation_id = IPP_RESUME_PRINTER;
1246         request->request.op.request_id   = 1;
1247
1248         language = cupsLangDefault();
1249
1250         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1251                      "attributes-charset", NULL, cupsLangEncoding(language));
1252
1253         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1254                      "attributes-natural-language", NULL, language->language);
1255
1256         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1257                  PRINTERNAME(snum));
1258
1259         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1260
1261         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1262                      NULL, current_user_info.unix_name);
1263
1264        /*
1265         * Do the request and get back a response...
1266         */
1267
1268         ret = 1;
1269
1270         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL)
1271         {
1272           if (response->request.status.status_code >= IPP_OK_CONFLICT)
1273                 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1274                          ippErrorString(cupsLastError())));
1275           else
1276                 ret = 0;
1277
1278           ippDelete(response);
1279         }
1280         else
1281           DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1282                    ippErrorString(cupsLastError())));
1283
1284         httpClose(http);
1285
1286         return (ret);
1287 }
1288
1289
1290 #else
1291  /* this keeps fussy compilers happy */
1292  void print_cups_dummy(void) {}
1293 #endif /* HAVE_CUPS */