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