source3/printing/print_cups.c

   1 /*
   2  * Support code for the Common UNIX Printing System ("CUPS")
   3  *
   4  * Copyright 1999-2001 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 #include "smb.h"
  23
  24 #ifdef HAVE_CUPS
  25 #include <cups/cups.h>
  26 #include <cups/language.h>
  27
  28
  29 /*
  30  * CUPS printing interface definitions...
  31  */
  32
  33 static int cups_job_delete(int snum, struct printjob *pjob);
  34 static int cups_job_pause(int snum, struct printjob *pjob);
  35 static int cups_job_resume(int snum, struct printjob *pjob);
  36 static int cups_job_submit(int snum, struct printjob *pjob);
  37 static int cups_queue_get(int snum, print_queue_struct **q,
  38                           print_status_struct *status);
  39 static int cups_queue_pause(int snum);
  40 static int cups_queue_resume(int snum);
  41
  42
  43 struct printif  cups_printif =
  44                 {
  45                   cups_queue_get,
  46                   cups_queue_pause,
  47                   cups_queue_resume,
  48                   cups_job_delete,
  49                   cups_job_pause,
  50                   cups_job_resume,
  51                   cups_job_submit,
  52                 };
  53
  54 /*
  55  * 'cups_passwd_cb()' - The CUPS password callback...
  56  */
  57
  58 const char *                            /* O - Password or NULL */
  59 cups_passwd_cb(const char *prompt)      /* I - Prompt */
  60 {
  61  /*
  62   * Always return NULL to indicate that no password is available...
  63   */
  64
  65   (void)prompt;
  66
  67   return (NULL);
  68 }
  69
  70
  71 /*
  72  * 'cups_printer_fn()' - Call a function for every printer known to the
  73  *                       system.
  74  */
  75
  76 void
  77 cups_printer_fn(void (*fn)(char *, char *))     /* I - Function to call */
  78 {
  79         http_t          *http;          /* HTTP connection to server */
  80         ipp_t           *request,       /* IPP Request */
  81                         *response;      /* IPP Response */
  82         ipp_attribute_t *attr;          /* Current attribute */
  83         cups_lang_t     *language;      /* Default language */
  84         char            *name,          /* printer-name attribute */
  85                         *make_model,    /* printer-make-and-model attribute */
  86                         *info;          /* printer-info attribute */
  87         static const char *requested[] =/* Requested attributes */
  88                         {
  89                           "printer-name",
  90                           "printer-make-and-model",
  91                           "printer-info"
  92                         };
  93
  94
  95         DEBUG(5,("cups_printer_fn(%p)\n", fn));
  96
  97        /*
  98         * Make sure we don't ask for passwords...
  99         */
 100
 101         cupsSetPasswordCB(cups_passwd_cb);
 102
 103        /*
 104         * Try to connect to the server...
 105         */
 106
 107         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 108         {
 109                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 110                          cupsServer(), strerror(errno)));
 111                 return;
 112         }
 113
 114        /*
 115         * Build a CUPS_GET_PRINTERS request, which requires the following
 116         * attributes:
 117         *
 118         *    attributes-charset
 119         *    attributes-natural-language
 120         *    requested-attributes
 121         */
 122
 123         request = ippNew();
 124
 125         request->request.op.operation_id = CUPS_GET_PRINTERS;
 126         request->request.op.request_id   = 1;
 127
 128         language = cupsLangDefault();
 129
 130         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 131                      "attributes-charset", NULL, cupsLangEncoding(language));
 132
 133         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 134                      "attributes-natural-language", NULL, language->language);
 135
 136         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 137                       "requested-attributes",
 138                       (sizeof(requested) / sizeof(requested[0])),
 139                       NULL, requested);
 140
 141        /*
 142         * Do the request and get back a response...
 143         */
 144
 145         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 146         {
 147                 DEBUG(0,("Unable to get printer list - %s\n",
 148                          ippErrorString(cupsLastError())));
 149                 httpClose(http);
 150                 return;
 151         }
 152
 153         for (attr = response->attrs; attr != NULL;)
 154         {
 155                /*
 156                 * Skip leading attributes until we hit a printer...
 157                 */
 158
 159                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 160                         attr = attr->next;
 161
 162                 if (attr == NULL)
 163                         break;
 164
 165                /*
 166                 * Pull the needed attributes from this printer...
 167                 */
 168
 169                 name       = NULL;
 170                 make_model = NULL;
 171                 info       = NULL;
 172
 173                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER)
 174                 {
 175                         if (strcmp(attr->name, "printer-name") == 0 &&
 176                             attr->value_tag == IPP_TAG_NAME)
 177                                 name = attr->values[0].string.text;
 178
 179                         if (strcmp(attr->name, "printer-make-and-model") == 0 &&
 180                             attr->value_tag == IPP_TAG_TEXT)
 181                                 make_model = attr->values[0].string.text;
 182
 183                         if (strcmp(attr->name, "printer-info") == 0 &&
 184                             attr->value_tag == IPP_TAG_TEXT)
 185                                 info = attr->values[0].string.text;
 186
 187                         attr = attr->next;
 188                 }
 189
 190                /*
 191                 * See if we have everything needed...
 192                 */
 193
 194                 if (name == NULL)
 195                         break;
 196
 197                 if (info == NULL || !info[0])
 198                         (*fn)(name, make_model);
 199                 else
 200                         (*fn)(name,info);
 201
 202
 203         }
 204
 205         ippDelete(response);
 206         httpClose(http);
 207 }
 208
 209
 210 /*
 211  * 'cups_printername_ok()' - Provide the equivalent of pcap_printername_ok()
 212  *                           for CUPS.
 213  */
 214
 215 int                                     /* O - 1 if printer name OK */
 216 cups_printername_ok(char *name)         /* I - Name of printer */
 217 {
 218         http_t          *http;          /* HTTP connection to server */
 219         ipp_t           *request,       /* IPP Request */
 220                         *response;      /* IPP Response */
 221         cups_lang_t     *language;      /* Default language */
 222         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 223
 224
 225         DEBUG(5,("cups_printername_ok(\"%s\")\n", name));
 226
 227        /*
 228         * Make sure we don't ask for passwords...
 229         */
 230
 231         cupsSetPasswordCB(cups_passwd_cb);
 232
 233        /*
 234         * Try to connect to the server...
 235         */
 236
 237         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 238         {
 239                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 240                          cupsServer(), strerror(errno)));
 241                 return (0);
 242         }
 243
 244        /*
 245         * Build an IPP_GET_PRINTER_ATTRS request, which requires the following
 246         * attributes:
 247         *
 248         *    attributes-charset
 249         *    attributes-natural-language
 250         *    requested-attributes
 251         *    printer-uri
 252         */
 253
 254         request = ippNew();
 255
 256         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
 257         request->request.op.request_id   = 1;
 258
 259         language = cupsLangDefault();
 260
 261         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 262                      "attributes-charset", NULL, cupsLangEncoding(language));
 263
 264         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 265                      "attributes-natural-language", NULL, language->language);
 266
 267         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 268                      "requested-attributes", NULL, "printer-uri");
 269
 270         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", name);
 271
 272         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 273                      "printer-uri", NULL, uri);
 274
 275        /*
 276         * Do the request and get back a response...
 277         */
 278
 279         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 280         {
 281                 DEBUG(0,("Unable to get printer status for %s - %s\n", name,
 282                          ippErrorString(cupsLastError())));
 283                 httpClose(http);
 284                 return (0);
 285         }
 286
 287         httpClose(http);
 288
 289         if (response->request.status.status_code >= IPP_OK_CONFLICT)
 290         {
 291                 DEBUG(0,("Unable to get printer status for %s - %s\n", name,
 292                          ippErrorString(response->request.status.status_code)));
 293                 ippDelete(response);
 294                 return (0);
 295         }
 296         else
 297         {
 298                 ippDelete(response);
 299                 return (1);
 300         }
 301 }
 302
 303
 304 /*
 305  * 'cups_job_delete()' - Delete a job.
 306  */
 307
 308 static int
 309 cups_job_delete(int snum, struct printjob *pjob)
 310 {
 311         int             ret;            /* Return value */
 312         http_t          *http;          /* HTTP connection to server */
 313         ipp_t           *request,       /* IPP Request */
 314                         *response;      /* IPP Response */
 315         cups_lang_t     *language;      /* Default language */
 316         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 317
 318
 319         DEBUG(5,("cups_job_delete(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 320
 321        /*
 322         * Make sure we don't ask for passwords...
 323         */
 324
 325         cupsSetPasswordCB(cups_passwd_cb);
 326
 327        /*
 328         * Try to connect to the server...
 329         */
 330
 331         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 332         {
 333                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 334                          cupsServer(), strerror(errno)));
 335                 return (1);
 336         }
 337
 338        /*
 339         * Build an IPP_CANCEL_JOB request, which requires the following
 340         * attributes:
 341         *
 342         *    attributes-charset
 343         *    attributes-natural-language
 344         *    job-uri
 345         *    requesting-user-name
 346         */
 347
 348         request = ippNew();
 349
 350         request->request.op.operation_id = IPP_CANCEL_JOB;
 351         request->request.op.request_id   = 1;
 352
 353         language = cupsLangDefault();
 354
 355         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 356                      "attributes-charset", NULL, cupsLangEncoding(language));
 357
 358         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 359                      "attributes-natural-language", NULL, language->language);
 360
 361         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 362
 363         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 364
 365         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 366                      NULL, pjob->user);
 367
 368        /*
 369         * Do the request and get back a response...
 370         */
 371
 372         ret = 1;
 373
 374         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL)
 375         {
 376           if (response->request.status.status_code >= IPP_OK_CONFLICT)
 377                 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 378                          ippErrorString(cupsLastError())));
 379           else
 380                 ret = 0;
 381
 382           ippDelete(response);
 383         }
 384         else
 385           DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 386                    ippErrorString(cupsLastError())));
 387
 388         httpClose(http);
 389
 390         return (ret);
 391 }
 392
 393
 394 /*
 395  * 'cups_job_pause()' - Pause a job.
 396  */
 397
 398 static int
 399 cups_job_pause(int snum, struct printjob *pjob)
 400 {
 401         int             ret;            /* Return value */
 402         http_t          *http;          /* HTTP connection to server */
 403         ipp_t           *request,       /* IPP Request */
 404                         *response;      /* IPP Response */
 405         cups_lang_t     *language;      /* Default language */
 406         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 407
 408
 409         DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 410
 411        /*
 412         * Make sure we don't ask for passwords...
 413         */
 414
 415         cupsSetPasswordCB(cups_passwd_cb);
 416
 417        /*
 418         * Try to connect to the server...
 419         */
 420
 421         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 422         {
 423                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 424                          cupsServer(), strerror(errno)));
 425                 return (1);
 426         }
 427
 428        /*
 429         * Build an IPP_HOLD_JOB request, which requires the following
 430         * attributes:
 431         *
 432         *    attributes-charset
 433         *    attributes-natural-language
 434         *    job-uri
 435         *    requesting-user-name
 436         */
 437
 438         request = ippNew();
 439
 440         request->request.op.operation_id = IPP_HOLD_JOB;
 441         request->request.op.request_id   = 1;
 442
 443         language = cupsLangDefault();
 444
 445         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 446                      "attributes-charset", NULL, cupsLangEncoding(language));
 447
 448         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 449                      "attributes-natural-language", NULL, language->language);
 450
 451         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 452
 453         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 454
 455         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 456                      NULL, pjob->user);
 457
 458        /*
 459         * Do the request and get back a response...
 460         */
 461
 462         ret = 1;
 463
 464         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL)
 465         {
 466           if (response->request.status.status_code >= IPP_OK_CONFLICT)
 467                 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 468                          ippErrorString(cupsLastError())));
 469           else
 470                 ret = 0;
 471
 472           ippDelete(response);
 473         }
 474         else
 475           DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 476                    ippErrorString(cupsLastError())));
 477
 478         httpClose(http);
 479
 480         return (ret);
 481 }
 482
 483
 484 /*
 485  * 'cups_job_resume()' - Resume a paused job.
 486  */
 487
 488 static int
 489 cups_job_resume(int snum, struct printjob *pjob)
 490 {
 491         int             ret;            /* Return value */
 492         http_t          *http;          /* HTTP connection to server */
 493         ipp_t           *request,       /* IPP Request */
 494                         *response;      /* IPP Response */
 495         cups_lang_t     *language;      /* Default language */
 496         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 497
 498
 499         DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 500
 501        /*
 502         * Make sure we don't ask for passwords...
 503         */
 504
 505         cupsSetPasswordCB(cups_passwd_cb);
 506
 507        /*
 508         * Try to connect to the server...
 509         */
 510
 511         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 512         {
 513                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 514                          cupsServer(), strerror(errno)));
 515                 return (1);
 516         }
 517
 518        /*
 519         * Build an IPP_RELEASE_JOB request, which requires the following
 520         * attributes:
 521         *
 522         *    attributes-charset
 523         *    attributes-natural-language
 524         *    job-uri
 525         *    requesting-user-name
 526         */
 527
 528         request = ippNew();
 529
 530         request->request.op.operation_id = IPP_RELEASE_JOB;
 531         request->request.op.request_id   = 1;
 532
 533         language = cupsLangDefault();
 534
 535         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 536                      "attributes-charset", NULL, cupsLangEncoding(language));
 537
 538         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 539                      "attributes-natural-language", NULL, language->language);
 540
 541         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 542
 543         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 544
 545         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 546                      NULL, pjob->user);
 547
 548        /*
 549         * Do the request and get back a response...
 550         */
 551
 552         ret = 1;
 553
 554         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL)
 555         {
 556           if (response->request.status.status_code >= IPP_OK_CONFLICT)
 557                 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 558                          ippErrorString(cupsLastError())));
 559           else
 560                 ret = 0;
 561
 562           ippDelete(response);
 563         }
 564         else
 565           DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 566                    ippErrorString(cupsLastError())));
 567
 568         httpClose(http);
 569
 570         return (ret);
 571 }
 572
 573
 574 /*
 575  * 'cups_job_submit()' - Submit a job for printing.
 576  */
 577
 578 static int
 579 cups_job_submit(int snum, struct printjob *pjob)
 580 {
 581         int             ret;            /* Return value */
 582         http_t          *http;          /* HTTP connection to server */
 583         ipp_t           *request,       /* IPP Request */
 584                         *response;      /* IPP Response */
 585         cups_lang_t     *language;      /* Default language */
 586         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 587
 588
 589         DEBUG(5,("cups_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 590
 591        /*
 592         * Make sure we don't ask for passwords...
 593         */
 594
 595         cupsSetPasswordCB(cups_passwd_cb);
 596
 597        /*
 598         * Try to connect to the server...
 599         */
 600
 601         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 602         {
 603                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 604                          cupsServer(), strerror(errno)));
 605                 return (1);
 606         }
 607
 608        /*
 609         * Build an IPP_PRINT_JOB request, which requires the following
 610         * attributes:
 611         *
 612         *    attributes-charset
 613         *    attributes-natural-language
 614         *    printer-uri
 615         *    requesting-user-name
 616         *    [document-data]
 617         */
 618
 619         request = ippNew();
 620
 621         request->request.op.operation_id = IPP_PRINT_JOB;
 622         request->request.op.request_id   = 1;
 623
 624         language = cupsLangDefault();
 625
 626         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 627                      "attributes-charset", NULL, cupsLangEncoding(language));
 628
 629         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 630                      "attributes-natural-language", NULL, language->language);
 631
 632         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
 633                  PRINTERNAME(snum));
 634
 635         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 636                      "printer-uri", NULL, uri);
 637
 638         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 639                      NULL, pjob->user);
 640
 641         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
 642                      pjob->jobname);
 643
 644        /*
 645         * Do the request and get back a response...
 646         */
 647
 648         slprintf(uri, sizeof(uri) - 1, "/printers/%s", PRINTERNAME(snum));
 649
 650         ret = 1;
 651         if ((response = cupsDoFileRequest(http, request, uri,
 652                                           pjob->filename)) != NULL)
 653         {
 654                 if (response->request.status.status_code >= IPP_OK_CONFLICT)
 655                         DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
 656                                  ippErrorString(cupsLastError())));
 657                 else
 658                         ret = 0;
 659
 660                 ippDelete(response);
 661         }
 662         else
 663                 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
 664                          ippErrorString(cupsLastError())));
 665
 666         httpClose(http);
 667
 668         if ( ret == 0 )
 669                 unlink(pjob->filename);
 670         /* else print_job_end will do it for us */
 671
 672         return (ret);
 673 }
 674
 675
 676 /*
 677  * 'cups_queue_get()' - Get all the jobs in the print queue.
 678  */
 679
 680 static int
 681 cups_queue_get(int snum, print_queue_struct **q, print_status_struct *status)
 682 {
 683         http_t          *http;          /* HTTP connection to server */
 684         ipp_t           *request,       /* IPP Request */
 685                         *response;      /* IPP Response */
 686         ipp_attribute_t *attr;          /* Current attribute */
 687         cups_lang_t     *language;      /* Default language */
 688         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 689         int             qcount,         /* Number of active queue entries */
 690                         qalloc;         /* Number of queue entries allocated */
 691         print_queue_struct *queue,      /* Queue entries */
 692                         *temp;          /* Temporary pointer for queue */
 693         const char      *user_name,     /* job-originating-user-name attribute */
 694                         *job_name;      /* job-name attribute */
 695         int             job_id;         /* job-id attribute */
 696         int             job_k_octets;   /* job-k-octets attribute */
 697         time_t          job_time;       /* time-at-creation attribute */
 698         ipp_jstate_t    job_status;     /* job-status attribute */
 699         int             job_priority;   /* job-priority attribute */
 700         static const char *jattrs[] =   /* Requested job attributes */
 701                         {
 702                           "job-id",
 703                           "job-k-octets",
 704                           "job-name",
 705                           "job-originating-user-name",
 706                           "job-priority",
 707                           "job-state",
 708                           "time-at-creation",
 709                         };
 710         static const char *pattrs[] =   /* Requested printer attributes */
 711                         {
 712                           "printer-state",
 713                           "printer-state-message"
 714                         };
 715
 716
 717         DEBUG(5,("cups_queue_get(%d, %p, %p)\n", snum, q, status));
 718
 719        /*
 720         * Make sure we don't ask for passwords...
 721         */
 722
 723         cupsSetPasswordCB(cups_passwd_cb);
 724
 725        /*
 726         * Try to connect to the server...
 727         */
 728
 729         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
 730         {
 731                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
 732                          cupsServer(), strerror(errno)));
 733                 return (0);
 734         }
 735
 736        /*
 737         * Generate the printer URI...
 738         */
 739
 740         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
 741                  PRINTERNAME(snum));
 742
 743        /*
 744         * Build an IPP_GET_JOBS request, which requires the following
 745         * attributes:
 746         *
 747         *    attributes-charset
 748         *    attributes-natural-language
 749         *    requested-attributes
 750         *    printer-uri
 751         */
 752
 753         request = ippNew();
 754
 755         request->request.op.operation_id = IPP_GET_JOBS;
 756         request->request.op.request_id   = 1;
 757
 758         language = cupsLangDefault();
 759
 760         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 761                      "attributes-charset", NULL, cupsLangEncoding(language));
 762
 763         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 764                      "attributes-natural-language", NULL, language->language);
 765
 766         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 767                       "requested-attributes",
 768                       (sizeof(jattrs) / sizeof(jattrs[0])),
 769                       NULL, jattrs);
 770
 771         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 772                      "printer-uri", NULL, uri);
 773
 774        /*
 775         * Do the request and get back a response...
 776         */
 777
 778         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 779         {
 780                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
 781                          ippErrorString(cupsLastError())));
 782                 httpClose(http);
 783                 return (0);
 784         }
 785
 786         if (response->request.status.status_code >= IPP_OK_CONFLICT)
 787         {
 788                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
 789                          ippErrorString(response->request.status.status_code)));
 790                 ippDelete(response);
 791                 httpClose(http);
 792
 793                 return (0);
 794         }
 795
 796        /*
 797         * Process the jobs...
 798         */
 799
 800         qcount = 0;
 801         qalloc = 0;
 802         queue  = NULL;
 803
 804         for (attr = response->attrs; attr != NULL; attr = attr->next)
 805         {
 806                /*
 807                 * Skip leading attributes until we hit a job...
 808                 */
 809
 810                 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
 811                         attr = attr->next;
 812
 813                 if (attr == NULL)
 814                         break;
 815
 816                /*
 817                 * Allocate memory as needed...
 818                 */
 819                 if (qcount >= qalloc)
 820                 {
 821                         qalloc += 16;
 822
 823                         temp = Realloc(queue, sizeof(print_queue_struct) * qalloc);
 824
 825                         if (temp == NULL)
 826                         {
 827                                 DEBUG(0,("cups_queue_get: Not enough memory!"));
 828                                 ippDelete(response);
 829                                 httpClose(http);
 830
 831                                 SAFE_FREE(queue);
 832                                 return (0);
 833                         }
 834
 835                         queue = temp;
 836                 }
 837
 838                 temp = queue + qcount;
 839                 memset(temp, 0, sizeof(print_queue_struct));
 840
 841                /*
 842                 * Pull the needed attributes from this job...
 843                 */
 844
 845                 job_id       = 0;
 846                 job_priority = 50;
 847                 job_status   = IPP_JOB_PENDING;
 848                 job_time     = 0;
 849                 job_k_octets = 0;
 850                 user_name    = NULL;
 851                 job_name     = NULL;
 852
 853                 while (attr != NULL && attr->group_tag == IPP_TAG_JOB)
 854                 {
 855                         if (attr->name == NULL)
 856                         {
 857                                 attr = attr->next;
 858                                 break;
 859                         }
 860
 861                         if (strcmp(attr->name, "job-id") == 0 &&
 862                             attr->value_tag == IPP_TAG_INTEGER)
 863                                 job_id = attr->values[0].integer;
 864
 865                         if (strcmp(attr->name, "job-k-octets") == 0 &&
 866                             attr->value_tag == IPP_TAG_INTEGER)
 867                                 job_k_octets = attr->values[0].integer;
 868
 869                         if (strcmp(attr->name, "job-priority") == 0 &&
 870                             attr->value_tag == IPP_TAG_INTEGER)
 871                                 job_priority = attr->values[0].integer;
 872
 873                         if (strcmp(attr->name, "job-state") == 0 &&
 874                             attr->value_tag == IPP_TAG_ENUM)
 875                                 job_status = (ipp_jstate_t)(attr->values[0].integer);
 876
 877                         if (strcmp(attr->name, "time-at-creation") == 0 &&
 878                             attr->value_tag == IPP_TAG_INTEGER)
 879                                 job_time = attr->values[0].integer;
 880
 881                         if (strcmp(attr->name, "job-name") == 0 &&
 882                             attr->value_tag == IPP_TAG_NAME)
 883                                 job_name = attr->values[0].string.text;
 884
 885                         if (strcmp(attr->name, "job-originating-user-name") == 0 &&
 886                             attr->value_tag == IPP_TAG_NAME)
 887                                 user_name = attr->values[0].string.text;
 888
 889                         attr = attr->next;
 890                 }
 891
 892                /*
 893                 * See if we have everything needed...
 894                 */
 895
 896                 if (user_name == NULL || job_name == NULL || job_id == 0)
 897                 {
 898                   if (attr == NULL)
 899                     break;
 900                   else
 901                     continue;
 902                 }
 903
 904                 temp->job      = job_id;
 905                 temp->size     = job_k_octets * 1024;
 906                 temp->status   = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
 907                                  job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
 908                                  job_status == IPP_JOB_HELD ? LPQ_PAUSED :
 909                                  LPQ_PRINTING;
 910                 temp->priority = job_priority;
 911                 temp->time     = job_time;
 912                 strncpy(temp->fs_user, user_name, sizeof(temp->fs_user) - 1);
 913                 strncpy(temp->fs_file, job_name, sizeof(temp->fs_file) - 1);
 914
 915                 qcount ++;
 916
 917                 if (attr == NULL)
 918                   break;
 919         }
 920
 921         ippDelete(response);
 922
 923        /*
 924         * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
 925         * following attributes:
 926         *
 927         *    attributes-charset
 928         *    attributes-natural-language
 929         *    requested-attributes
 930         *    printer-uri
 931         */
 932
 933         request = ippNew();
 934
 935         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
 936         request->request.op.request_id   = 1;
 937
 938         language = cupsLangDefault();
 939
 940         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 941                      "attributes-charset", NULL, cupsLangEncoding(language));
 942
 943         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 944                      "attributes-natural-language", NULL, language->language);
 945
 946         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 947                       "requested-attributes",
 948                       (sizeof(pattrs) / sizeof(pattrs[0])),
 949                       NULL, pattrs);
 950
 951         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 952                      "printer-uri", NULL, uri);
 953
 954        /*
 955         * Do the request and get back a response...
 956         */
 957
 958         if ((response = cupsDoRequest(http, request, "/")) == NULL)
 959         {
 960                 DEBUG(0,("Unable to get printer status for %s - %s\n", PRINTERNAME(snum),
 961                          ippErrorString(cupsLastError())));
 962                 httpClose(http);
 963                 *q = queue;
 964                 return (qcount);
 965         }
 966
 967         if (response->request.status.status_code >= IPP_OK_CONFLICT)
 968         {
 969                 DEBUG(0,("Unable to get printer status for %s - %s\n", PRINTERNAME(snum),
 970                          ippErrorString(response->request.status.status_code)));
 971                 ippDelete(response);
 972                 httpClose(http);
 973                 *q = queue;
 974                 return (qcount);
 975         }
 976
 977        /*
 978         * Get the current printer status and convert it to the SAMBA values.
 979         */
 980
 981         if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL)
 982         {
 983                 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
 984                         status->status = LPSTAT_STOPPED;
 985                 else
 986                         status->status = LPSTAT_OK;
 987         }
 988
 989         if ((attr = ippFindAttribute(response, "printer-state-message",
 990                                      IPP_TAG_TEXT)) != NULL)
 991                 fstrcpy(status->message, attr->values[0].string.text);
 992
 993         ippDelete(response);
 994
 995        /*
 996         * Return the job queue...
 997         */
 998
 999         httpClose(http);
1000
1001         *q = queue;
1002         return (qcount);
1003 }
1004
1005
1006 /*
1007  * 'cups_queue_pause()' - Pause a print queue.
1008  */
1009
1010 static int
1011 cups_queue_pause(int snum)
1012 {
1013         extern userdom_struct current_user_info;
1014         int             ret;            /* Return value */
1015         http_t          *http;          /* HTTP connection to server */
1016         ipp_t           *request,       /* IPP Request */
1017                         *response;      /* IPP Response */
1018         cups_lang_t     *language;      /* Default language */
1019         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1020
1021
1022         DEBUG(5,("cups_queue_pause(%d)\n", snum));
1023
1024         /*
1025          * Make sure we don't ask for passwords...
1026          */
1027
1028         cupsSetPasswordCB(cups_passwd_cb);
1029
1030         /*
1031          * Try to connect to the server...
1032          */
1033
1034         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
1035         {
1036                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
1037                          cupsServer(), strerror(errno)));
1038                 return (1);
1039         }
1040
1041         /*
1042          * Build an IPP_PAUSE_PRINTER request, which requires the following
1043          * attributes:
1044          *
1045          *    attributes-charset
1046          *    attributes-natural-language
1047          *    printer-uri
1048          *    requesting-user-name
1049          */
1050
1051         request = ippNew();
1052
1053         request->request.op.operation_id = IPP_PAUSE_PRINTER;
1054         request->request.op.request_id   = 1;
1055
1056         language = cupsLangDefault();
1057
1058         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1059                      "attributes-charset", NULL, cupsLangEncoding(language));
1060
1061         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1062                      "attributes-natural-language", NULL, language->language);
1063
1064         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1065                  PRINTERNAME(snum));
1066
1067         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1068
1069         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1070                      NULL, current_user_info.unix_name);
1071
1072        /*
1073         * Do the request and get back a response...
1074         */
1075
1076         ret = 1;
1077
1078         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL)
1079         {
1080           if (response->request.status.status_code >= IPP_OK_CONFLICT)
1081                 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1082                          ippErrorString(cupsLastError())));
1083           else
1084                 ret = 0;
1085
1086           ippDelete(response);
1087         }
1088         else
1089           DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1090                    ippErrorString(cupsLastError())));
1091
1092         httpClose(http);
1093
1094         return (ret);
1095 }
1096
1097
1098 /*
1099  * 'cups_queue_resume()' - Restart a print queue.
1100  */
1101
1102 static int
1103 cups_queue_resume(int snum)
1104 {
1105         extern userdom_struct current_user_info;
1106         int             ret;            /* Return value */
1107         http_t          *http;          /* HTTP connection to server */
1108         ipp_t           *request,       /* IPP Request */
1109                         *response;      /* IPP Response */
1110         cups_lang_t     *language;      /* Default language */
1111         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1112
1113
1114         DEBUG(5,("cups_queue_resume(%d)\n", snum));
1115
1116        /*
1117         * Make sure we don't ask for passwords...
1118         */
1119
1120         cupsSetPasswordCB(cups_passwd_cb);
1121
1122        /*
1123         * Try to connect to the server...
1124         */
1125
1126         if ((http = httpConnect(cupsServer(), ippPort())) == NULL)
1127         {
1128                 DEBUG(0,("Unable to connect to CUPS server %s - %s\n",
1129                          cupsServer(), strerror(errno)));
1130                 return (1);
1131         }
1132
1133        /*
1134         * Build an IPP_RESUME_PRINTER request, which requires the following
1135         * attributes:
1136         *
1137         *    attributes-charset
1138         *    attributes-natural-language
1139         *    printer-uri
1140         *    requesting-user-name
1141         */
1142
1143         request = ippNew();
1144
1145         request->request.op.operation_id = IPP_RESUME_PRINTER;
1146         request->request.op.request_id   = 1;
1147
1148         language = cupsLangDefault();
1149
1150         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1151                      "attributes-charset", NULL, cupsLangEncoding(language));
1152
1153         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1154                      "attributes-natural-language", NULL, language->language);
1155
1156         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1157                  PRINTERNAME(snum));
1158
1159         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1160
1161         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1162                      NULL, current_user_info.unix_name);
1163
1164        /*
1165         * Do the request and get back a response...
1166         */
1167
1168         ret = 1;
1169
1170         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL)
1171         {
1172           if (response->request.status.status_code >= IPP_OK_CONFLICT)
1173                 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1174                          ippErrorString(cupsLastError())));
1175           else
1176                 ret = 0;
1177
1178           ippDelete(response);
1179         }
1180         else
1181           DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1182                    ippErrorString(cupsLastError())));
1183
1184         httpClose(http);
1185
1186         return (ret);
1187 }
1188
1189
1190 #else
1191  /* this keeps fussy compilers happy */
1192  void print_cups_dummy(void) {}
1193 #endif /* HAVE_CUPS */