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  * Copyright 2008 Jeremy Allison.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 /*
  22  * JRA. Converted to utf8 pull/push.
  23  */
  24
  25 #include "includes.h"
  26 #include "printing.h"
  27 #include "printing/pcap.h"
  28
  29 #ifdef HAVE_CUPS
  30 #include <cups/cups.h>
  31 #include <cups/language.h>
  32
  33 static SIG_ATOMIC_T gotalarm;
  34
  35 /***************************************************************
  36  Signal function to tell us we timed out.
  37 ****************************************************************/
  38
  39 static void gotalarm_sig(int signum)
  40 {
  41         gotalarm = 1;
  42 }
  43
  44 extern userdom_struct current_user_info;
  45
  46 /*
  47  * 'cups_passwd_cb()' - The CUPS password callback...
  48  */
  49
  50 static const char *                             /* O - Password or NULL */
  51 cups_passwd_cb(const char *prompt)      /* I - Prompt */
  52 {
  53         /*
  54          * Always return NULL to indicate that no password is available...
  55          */
  56
  57         return (NULL);
  58 }
  59
  60 static http_t *cups_connect(TALLOC_CTX *frame)
  61 {
  62         http_t *http = NULL;
  63         char *server = NULL, *p = NULL;
  64         int port;
  65         int timeout = lp_cups_connection_timeout();
  66         size_t size;
  67
  68         if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
  69                 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
  70                         return NULL;
  71                 }
  72         } else {
  73                 server = talloc_strdup(frame,cupsServer());
  74         }
  75         if (!server) {
  76                 return NULL;
  77         }
  78
  79         p = strchr(server, ':');
  80         if (p) {
  81                 port = atoi(p+1);
  82                 *p = '\0';
  83         } else {
  84                 port = ippPort();
  85         }
  86
  87         DEBUG(10, ("connecting to cups server %s:%d\n",
  88                    server, port));
  89
  90         gotalarm = 0;
  91
  92         if (timeout) {
  93                 CatchSignal(SIGALRM, gotalarm_sig);
  94                 alarm(timeout);
  95         }
  96
  97 #ifdef HAVE_HTTPCONNECTENCRYPT
  98         http = httpConnectEncrypt(server, port, lp_cups_encrypt());
  99 #else
 100         http = httpConnect(server, port);
 101 #endif
 102
 103
 104         CatchSignal(SIGALRM, SIG_IGN);
 105         alarm(0);
 106
 107         if (http == NULL) {
 108                 DEBUG(0,("Unable to connect to CUPS server %s:%d - %s\n",
 109                          server, port, strerror(errno)));
 110         }
 111
 112         return http;
 113 }
 114
 115 static void send_pcap_info(const char *name, const char *info, void *pd)
 116 {
 117         int fd = *(int *)pd;
 118         size_t namelen = name ? strlen(name)+1 : 0;
 119         size_t infolen = info ? strlen(info)+1 : 0;
 120
 121         DEBUG(11,("send_pcap_info: writing namelen %u\n", (unsigned int)namelen));
 122         if (sys_write(fd, &namelen, sizeof(namelen)) != sizeof(namelen)) {
 123                 DEBUG(10,("send_pcap_info: namelen write failed %s\n",
 124                         strerror(errno)));
 125                 return;
 126         }
 127         DEBUG(11,("send_pcap_info: writing infolen %u\n", (unsigned int)infolen));
 128         if (sys_write(fd, &infolen, sizeof(infolen)) != sizeof(infolen)) {
 129                 DEBUG(10,("send_pcap_info: infolen write failed %s\n",
 130                         strerror(errno)));
 131                 return;
 132         }
 133         if (namelen) {
 134                 DEBUG(11,("send_pcap_info: writing name %s\n", name));
 135                 if (sys_write(fd, name, namelen) != namelen) {
 136                         DEBUG(10,("send_pcap_info: name write failed %s\n",
 137                                 strerror(errno)));
 138                         return;
 139                 }
 140         }
 141         if (infolen) {
 142                 DEBUG(11,("send_pcap_info: writing info %s\n", info));
 143                 if (sys_write(fd, info, infolen) != infolen) {
 144                         DEBUG(10,("send_pcap_info: info write failed %s\n",
 145                                 strerror(errno)));
 146                         return;
 147                 }
 148         }
 149 }
 150
 151 static bool cups_cache_reload_async(int fd)
 152 {
 153         TALLOC_CTX *frame = talloc_stackframe();
 154         struct pcap_cache *tmp_pcap_cache = NULL;
 155         http_t          *http = NULL;           /* HTTP connection to server */
 156         ipp_t           *request = NULL,        /* IPP Request */
 157                         *response = NULL;       /* IPP Response */
 158         ipp_attribute_t *attr;          /* Current attribute */
 159         cups_lang_t     *language = NULL;       /* Default language */
 160         char            *name,          /* printer-name attribute */
 161                         *info;          /* printer-info attribute */
 162         static const char *requested[] =/* Requested attributes */
 163                         {
 164                           "printer-name",
 165                           "printer-info"
 166                         };
 167         bool ret = False;
 168         size_t size;
 169
 170         DEBUG(5, ("reloading cups printcap cache\n"));
 171
 172        /*
 173         * Make sure we don't ask for passwords...
 174         */
 175
 176         cupsSetPasswordCB(cups_passwd_cb);
 177
 178        /*
 179         * Try to connect to the server...
 180         */
 181
 182         if ((http = cups_connect(frame)) == NULL) {
 183                 goto out;
 184         }
 185
 186        /*
 187         * Build a CUPS_GET_PRINTERS request, which requires the following
 188         * attributes:
 189         *
 190         *    attributes-charset
 191         *    attributes-natural-language
 192         *    requested-attributes
 193         */
 194
 195         request = ippNew();
 196
 197         request->request.op.operation_id = CUPS_GET_PRINTERS;
 198         request->request.op.request_id   = 1;
 199
 200         language = cupsLangDefault();
 201
 202         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 203                      "attributes-charset", NULL, "utf-8");
 204
 205         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 206                      "attributes-natural-language", NULL, language->language);
 207
 208         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 209                       "requested-attributes",
 210                       (sizeof(requested) / sizeof(requested[0])),
 211                       NULL, requested);
 212
 213        /*
 214         * Do the request and get back a response...
 215         */
 216
 217         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
 218                 DEBUG(0,("Unable to get printer list - %s\n",
 219                          ippErrorString(cupsLastError())));
 220                 goto out;
 221         }
 222
 223         for (attr = response->attrs; attr != NULL;) {
 224                /*
 225                 * Skip leading attributes until we hit a printer...
 226                 */
 227
 228                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 229                         attr = attr->next;
 230
 231                 if (attr == NULL)
 232                         break;
 233
 234                /*
 235                 * Pull the needed attributes from this printer...
 236                 */
 237
 238                 name       = NULL;
 239                 info       = NULL;
 240
 241                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
 242                         if (strcmp(attr->name, "printer-name") == 0 &&
 243                             attr->value_tag == IPP_TAG_NAME) {
 244                                 if (!pull_utf8_talloc(frame,
 245                                                 &name,
 246                                                 attr->values[0].string.text,
 247                                                 &size)) {
 248                                         goto out;
 249                                 }
 250                         }
 251
 252                         if (strcmp(attr->name, "printer-info") == 0 &&
 253                             attr->value_tag == IPP_TAG_TEXT) {
 254                                 if (!pull_utf8_talloc(frame,
 255                                                 &info,
 256                                                 attr->values[0].string.text,
 257                                                 &size)) {
 258                                         goto out;
 259                                 }
 260                         }
 261
 262                         attr = attr->next;
 263                 }
 264
 265                /*
 266                 * See if we have everything needed...
 267                 */
 268
 269                 if (name == NULL)
 270                         break;
 271
 272                 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
 273                         goto out;
 274                 }
 275         }
 276
 277         ippDelete(response);
 278         response = NULL;
 279
 280        /*
 281         * Build a CUPS_GET_CLASSES request, which requires the following
 282         * attributes:
 283         *
 284         *    attributes-charset
 285         *    attributes-natural-language
 286         *    requested-attributes
 287         */
 288
 289         request = ippNew();
 290
 291         request->request.op.operation_id = CUPS_GET_CLASSES;
 292         request->request.op.request_id   = 1;
 293
 294         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 295                      "attributes-charset", NULL, "utf-8");
 296
 297         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 298                      "attributes-natural-language", NULL, language->language);
 299
 300         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 301                       "requested-attributes",
 302                       (sizeof(requested) / sizeof(requested[0])),
 303                       NULL, requested);
 304
 305        /*
 306         * Do the request and get back a response...
 307         */
 308
 309         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
 310                 DEBUG(0,("Unable to get printer list - %s\n",
 311                          ippErrorString(cupsLastError())));
 312                 goto out;
 313         }
 314
 315         for (attr = response->attrs; attr != NULL;) {
 316                /*
 317                 * Skip leading attributes until we hit a printer...
 318                 */
 319
 320                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 321                         attr = attr->next;
 322
 323                 if (attr == NULL)
 324                         break;
 325
 326                /*
 327                 * Pull the needed attributes from this printer...
 328                 */
 329
 330                 name       = NULL;
 331                 info       = NULL;
 332
 333                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
 334                         if (strcmp(attr->name, "printer-name") == 0 &&
 335                             attr->value_tag == IPP_TAG_NAME) {
 336                                 if (!pull_utf8_talloc(frame,
 337                                                 &name,
 338                                                 attr->values[0].string.text,
 339                                                 &size)) {
 340                                         goto out;
 341                                 }
 342                         }
 343
 344                         if (strcmp(attr->name, "printer-info") == 0 &&
 345                             attr->value_tag == IPP_TAG_TEXT) {
 346                                 if (!pull_utf8_talloc(frame,
 347                                                 &info,
 348                                                 attr->values[0].string.text,
 349                                                 &size)) {
 350                                         goto out;
 351                                 }
 352                         }
 353
 354                         attr = attr->next;
 355                 }
 356
 357                /*
 358                 * See if we have everything needed...
 359                 */
 360
 361                 if (name == NULL)
 362                         break;
 363
 364                 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
 365                         goto out;
 366                 }
 367         }
 368
 369         ret = True;
 370
 371  out:
 372         if (response)
 373                 ippDelete(response);
 374
 375         if (language)
 376                 cupsLangFree(language);
 377
 378         if (http)
 379                 httpClose(http);
 380
 381         /* Send all the entries up the pipe. */
 382         if (tmp_pcap_cache) {
 383                 pcap_printer_fn_specific(tmp_pcap_cache,
 384                                 send_pcap_info,
 385                                 (void *)&fd);
 386
 387                 pcap_cache_destroy_specific(&tmp_pcap_cache);
 388         }
 389         TALLOC_FREE(frame);
 390         return ret;
 391 }
 392
 393 static struct pcap_cache *local_pcap_copy;
 394 struct fd_event *cache_fd_event;
 395
 396 static bool cups_pcap_load_async(int *pfd)
 397 {
 398         int fds[2];
 399         pid_t pid;
 400
 401         *pfd = -1;
 402
 403         if (cache_fd_event) {
 404                 DEBUG(3,("cups_pcap_load_async: already waiting for "
 405                         "a refresh event\n" ));
 406                 return false;
 407         }
 408
 409         DEBUG(5,("cups_pcap_load_async: asynchronously loading cups printers\n"));
 410
 411         if (pipe(fds) == -1) {
 412                 return false;
 413         }
 414
 415         pid = sys_fork();
 416         if (pid == (pid_t)-1) {
 417                 DEBUG(10,("cups_pcap_load_async: fork failed %s\n",
 418                         strerror(errno) ));
 419                 close(fds[0]);
 420                 close(fds[1]);
 421                 return false;
 422         }
 423
 424         if (pid) {
 425                 DEBUG(10,("cups_pcap_load_async: child pid = %u\n",
 426                         (unsigned int)pid ));
 427                 /* Parent. */
 428                 close(fds[1]);
 429                 *pfd = fds[0];
 430                 return true;
 431         }
 432
 433         /* Child. */
 434
 435         close_all_print_db();
 436
 437         if (!NT_STATUS_IS_OK(reinit_after_fork(smbd_messaging_context(),
 438                                                smbd_event_context(), true))) {
 439                 DEBUG(0,("cups_pcap_load_async: reinit_after_fork() failed\n"));
 440                 smb_panic("cups_pcap_load_async: reinit_after_fork() failed");
 441         }
 442
 443         close(fds[0]);
 444         cups_cache_reload_async(fds[1]);
 445         close(fds[1]);
 446         _exit(0);
 447 }
 448
 449 static void cups_async_callback(struct event_context *event_ctx,
 450                                 struct fd_event *event,
 451                                 uint16 flags,
 452                                 void *p)
 453 {
 454         TALLOC_CTX *frame = talloc_stackframe();
 455         int fd = *(int *)p;
 456         struct pcap_cache *tmp_pcap_cache = NULL;
 457
 458         DEBUG(5,("cups_async_callback: callback received for printer data. "
 459                 "fd = %d\n", fd));
 460
 461         while (1) {
 462                 char *name = NULL, *info = NULL;
 463                 size_t namelen = 0, infolen = 0;
 464                 ssize_t ret = -1;
 465
 466                 ret = sys_read(fd, &namelen, sizeof(namelen));
 467                 if (ret == 0) {
 468                         /* EOF */
 469                         break;
 470                 }
 471                 if (ret != sizeof(namelen)) {
 472                         DEBUG(10,("cups_async_callback: namelen read failed %d %s\n",
 473                                 errno, strerror(errno)));
 474                         break;
 475                 }
 476
 477                 DEBUG(11,("cups_async_callback: read namelen %u\n",
 478                         (unsigned int)namelen));
 479
 480                 ret = sys_read(fd, &infolen, sizeof(infolen));
 481                 if (ret == 0) {
 482                         /* EOF */
 483                         break;
 484                 }
 485                 if (ret != sizeof(infolen)) {
 486                         DEBUG(10,("cups_async_callback: infolen read failed %s\n",
 487                                 strerror(errno)));
 488                         break;
 489                 }
 490
 491                 DEBUG(11,("cups_async_callback: read infolen %u\n",
 492                         (unsigned int)infolen));
 493
 494                 if (namelen) {
 495                         name = TALLOC_ARRAY(frame, char, namelen);
 496                         if (!name) {
 497                                 break;
 498                         }
 499                         ret = sys_read(fd, name, namelen);
 500                         if (ret == 0) {
 501                                 /* EOF */
 502                                 break;
 503                         }
 504                         if (ret != namelen) {
 505                                 DEBUG(10,("cups_async_callback: name read failed %s\n",
 506                                         strerror(errno)));
 507                                 break;
 508                         }
 509                         DEBUG(11,("cups_async_callback: read name %s\n",
 510                                 name));
 511                 } else {
 512                         name = NULL;
 513                 }
 514                 if (infolen) {
 515                         info = TALLOC_ARRAY(frame, char, infolen);
 516                         if (!info) {
 517                                 break;
 518                         }
 519                         ret = sys_read(fd, info, infolen);
 520                         if (ret == 0) {
 521                                 /* EOF */
 522                                 break;
 523                         }
 524                         if (ret != infolen) {
 525                                 DEBUG(10,("cups_async_callback: info read failed %s\n",
 526                                         strerror(errno)));
 527                                 break;
 528                         }
 529                         DEBUG(11,("cups_async_callback: read info %s\n",
 530                                 info));
 531                 } else {
 532                         info = NULL;
 533                 }
 534
 535                 /* Add to our local pcap cache. */
 536                 pcap_cache_add_specific(&tmp_pcap_cache, name, info);
 537                 TALLOC_FREE(name);
 538                 TALLOC_FREE(info);
 539         }
 540
 541         TALLOC_FREE(frame);
 542         if (tmp_pcap_cache) {
 543                 /* We got a namelist, replace our local cache. */
 544                 pcap_cache_destroy_specific(&local_pcap_copy);
 545                 local_pcap_copy = tmp_pcap_cache;
 546
 547                 /* And the systemwide pcap cache. */
 548                 pcap_cache_replace(local_pcap_copy);
 549         } else {
 550                 DEBUG(2,("cups_async_callback: failed to read a new "
 551                         "printer list\n"));
 552         }
 553         close(fd);
 554         TALLOC_FREE(p);
 555         TALLOC_FREE(cache_fd_event);
 556 }
 557
 558 bool cups_cache_reload(void)
 559 {
 560         int *p_pipe_fd = TALLOC_P(NULL, int);
 561
 562         if (!p_pipe_fd) {
 563                 return false;
 564         }
 565
 566         *p_pipe_fd = -1;
 567
 568         /* Set up an async refresh. */
 569         if (!cups_pcap_load_async(p_pipe_fd)) {
 570                 return false;
 571         }
 572         if (!local_pcap_copy) {
 573                 /* We have no local cache, wait directly for
 574                  * async refresh to complete.
 575                  */
 576                 DEBUG(10,("cups_cache_reload: sync read on fd %d\n",
 577                         *p_pipe_fd ));
 578
 579                 cups_async_callback(smbd_event_context(),
 580                                         NULL,
 581                                         EVENT_FD_READ,
 582                                         (void *)p_pipe_fd);
 583                 if (!local_pcap_copy) {
 584                         return false;
 585                 }
 586         } else {
 587                 /* Replace the system cache with our
 588                  * local copy. */
 589                 pcap_cache_replace(local_pcap_copy);
 590
 591                 DEBUG(10,("cups_cache_reload: async read on fd %d\n",
 592                         *p_pipe_fd ));
 593
 594                 /* Trigger an event when the pipe can be read. */
 595                 cache_fd_event = event_add_fd(smbd_event_context(),
 596                                         NULL, *p_pipe_fd,
 597                                         EVENT_FD_READ,
 598                                         cups_async_callback,
 599                                         (void *)p_pipe_fd);
 600                 if (!cache_fd_event) {
 601                         close(*p_pipe_fd);
 602                         TALLOC_FREE(p_pipe_fd);
 603                         return false;
 604                 }
 605         }
 606         return true;
 607 }
 608
 609 /*
 610  * 'cups_job_delete()' - Delete a job.
 611  */
 612
 613 static int cups_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
 614 {
 615         TALLOC_CTX *frame = talloc_stackframe();
 616         int             ret = 1;                /* Return value */
 617         http_t          *http = NULL;           /* HTTP connection to server */
 618         ipp_t           *request = NULL,        /* IPP Request */
 619                         *response = NULL;       /* IPP Response */
 620         cups_lang_t     *language = NULL;       /* Default language */
 621         char *user = NULL;
 622         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 623         size_t size;
 624
 625         DEBUG(5,("cups_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
 626
 627        /*
 628         * Make sure we don't ask for passwords...
 629         */
 630
 631         cupsSetPasswordCB(cups_passwd_cb);
 632
 633        /*
 634         * Try to connect to the server...
 635         */
 636
 637         if ((http = cups_connect(frame)) == NULL) {
 638                 goto out;
 639         }
 640
 641        /*
 642         * Build an IPP_CANCEL_JOB request, which requires the following
 643         * attributes:
 644         *
 645         *    attributes-charset
 646         *    attributes-natural-language
 647         *    job-uri
 648         *    requesting-user-name
 649         */
 650
 651         request = ippNew();
 652
 653         request->request.op.operation_id = IPP_CANCEL_JOB;
 654         request->request.op.request_id   = 1;
 655
 656         language = cupsLangDefault();
 657
 658         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 659                      "attributes-charset", NULL, "utf-8");
 660
 661         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 662                      "attributes-natural-language", NULL, language->language);
 663
 664         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 665
 666         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 667
 668         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 669                 goto out;
 670         }
 671
 672         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 673                      NULL, user);
 674
 675        /*
 676         * Do the request and get back a response...
 677         */
 678
 679         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
 680                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
 681                         DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 682                                 ippErrorString(cupsLastError())));
 683                 } else {
 684                         ret = 0;
 685                 }
 686         } else {
 687                 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 688                         ippErrorString(cupsLastError())));
 689         }
 690
 691  out:
 692         if (response)
 693                 ippDelete(response);
 694
 695         if (language)
 696                 cupsLangFree(language);
 697
 698         if (http)
 699                 httpClose(http);
 700
 701         TALLOC_FREE(frame);
 702         return ret;
 703 }
 704
 705
 706 /*
 707  * 'cups_job_pause()' - Pause a job.
 708  */
 709
 710 static int cups_job_pause(int snum, struct printjob *pjob)
 711 {
 712         TALLOC_CTX *frame = talloc_stackframe();
 713         int             ret = 1;                /* Return value */
 714         http_t          *http = NULL;           /* HTTP connection to server */
 715         ipp_t           *request = NULL,        /* IPP Request */
 716                         *response = NULL;       /* IPP Response */
 717         cups_lang_t     *language = NULL;       /* Default language */
 718         char *user = NULL;
 719         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 720         size_t size;
 721
 722         DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 723
 724        /*
 725         * Make sure we don't ask for passwords...
 726         */
 727
 728         cupsSetPasswordCB(cups_passwd_cb);
 729
 730        /*
 731         * Try to connect to the server...
 732         */
 733
 734         if ((http = cups_connect(frame)) == NULL) {
 735                 goto out;
 736         }
 737
 738        /*
 739         * Build an IPP_HOLD_JOB request, which requires the following
 740         * attributes:
 741         *
 742         *    attributes-charset
 743         *    attributes-natural-language
 744         *    job-uri
 745         *    requesting-user-name
 746         */
 747
 748         request = ippNew();
 749
 750         request->request.op.operation_id = IPP_HOLD_JOB;
 751         request->request.op.request_id   = 1;
 752
 753         language = cupsLangDefault();
 754
 755         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 756                      "attributes-charset", NULL, "utf-8");
 757
 758         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 759                      "attributes-natural-language", NULL, language->language);
 760
 761         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 762
 763         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 764
 765         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 766                 goto out;
 767         }
 768         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 769                      NULL, user);
 770
 771        /*
 772         * Do the request and get back a response...
 773         */
 774
 775         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
 776                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
 777                         DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 778                                 ippErrorString(cupsLastError())));
 779                 } else {
 780                         ret = 0;
 781                 }
 782         } else {
 783                 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 784                         ippErrorString(cupsLastError())));
 785         }
 786
 787  out:
 788         if (response)
 789                 ippDelete(response);
 790
 791         if (language)
 792                 cupsLangFree(language);
 793
 794         if (http)
 795                 httpClose(http);
 796
 797         TALLOC_FREE(frame);
 798         return ret;
 799 }
 800
 801
 802 /*
 803  * 'cups_job_resume()' - Resume a paused job.
 804  */
 805
 806 static int cups_job_resume(int snum, struct printjob *pjob)
 807 {
 808         TALLOC_CTX *frame = talloc_stackframe();
 809         int             ret = 1;                /* Return value */
 810         http_t          *http = NULL;           /* HTTP connection to server */
 811         ipp_t           *request = NULL,        /* IPP Request */
 812                         *response = NULL;       /* IPP Response */
 813         cups_lang_t     *language = NULL;       /* Default language */
 814         char *user = NULL;
 815         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 816         size_t size;
 817
 818         DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 819
 820        /*
 821         * Make sure we don't ask for passwords...
 822         */
 823
 824         cupsSetPasswordCB(cups_passwd_cb);
 825
 826        /*
 827         * Try to connect to the server...
 828         */
 829
 830         if ((http = cups_connect(frame)) == NULL) {
 831                 goto out;
 832         }
 833
 834        /*
 835         * Build an IPP_RELEASE_JOB request, which requires the following
 836         * attributes:
 837         *
 838         *    attributes-charset
 839         *    attributes-natural-language
 840         *    job-uri
 841         *    requesting-user-name
 842         */
 843
 844         request = ippNew();
 845
 846         request->request.op.operation_id = IPP_RELEASE_JOB;
 847         request->request.op.request_id   = 1;
 848
 849         language = cupsLangDefault();
 850
 851         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 852                      "attributes-charset", NULL, "utf-8");
 853
 854         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 855                      "attributes-natural-language", NULL, language->language);
 856
 857         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 858
 859         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 860
 861         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 862                 goto out;
 863         }
 864         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 865                      NULL, user);
 866
 867        /*
 868         * Do the request and get back a response...
 869         */
 870
 871         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
 872                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
 873                         DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 874                                 ippErrorString(cupsLastError())));
 875                 } else {
 876                         ret = 0;
 877                 }
 878         } else {
 879                 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 880                         ippErrorString(cupsLastError())));
 881         }
 882
 883  out:
 884         if (response)
 885                 ippDelete(response);
 886
 887         if (language)
 888                 cupsLangFree(language);
 889
 890         if (http)
 891                 httpClose(http);
 892
 893         TALLOC_FREE(frame);
 894         return ret;
 895 }
 896
 897
 898 /*
 899  * 'cups_job_submit()' - Submit a job for printing.
 900  */
 901
 902 static int cups_job_submit(int snum, struct printjob *pjob)
 903 {
 904         TALLOC_CTX *frame = talloc_stackframe();
 905         int             ret = 1;                /* Return value */
 906         http_t          *http = NULL;           /* HTTP connection to server */
 907         ipp_t           *request = NULL,        /* IPP Request */
 908                         *response = NULL;       /* IPP Response */
 909         ipp_attribute_t *attr_job_id = NULL;    /* IPP Attribute "job-id" */
 910         cups_lang_t     *language = NULL;       /* Default language */
 911         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 912         const char      *clientname = NULL;     /* hostname of client for job-originating-host attribute */
 913         char *new_jobname = NULL;
 914         int             num_options = 0;
 915         cups_option_t   *options = NULL;
 916         char *printername = NULL;
 917         char *user = NULL;
 918         char *jobname = NULL;
 919         char *cupsoptions = NULL;
 920         char *filename = NULL;
 921         size_t size;
 922         uint32_t jobid = (uint32_t)-1;
 923         char addr[INET6_ADDRSTRLEN];
 924
 925         DEBUG(5,("cups_job_submit(%d, %p)\n", snum, pjob));
 926
 927        /*
 928         * Make sure we don't ask for passwords...
 929         */
 930
 931         cupsSetPasswordCB(cups_passwd_cb);
 932
 933        /*
 934         * Try to connect to the server...
 935         */
 936
 937         if ((http = cups_connect(frame)) == NULL) {
 938                 goto out;
 939         }
 940
 941        /*
 942         * Build an IPP_PRINT_JOB request, which requires the following
 943         * attributes:
 944         *
 945         *    attributes-charset
 946         *    attributes-natural-language
 947         *    printer-uri
 948         *    requesting-user-name
 949         *    [document-data]
 950         */
 951
 952         request = ippNew();
 953
 954         request->request.op.operation_id = IPP_PRINT_JOB;
 955         request->request.op.request_id   = 1;
 956
 957         language = cupsLangDefault();
 958
 959         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 960                      "attributes-charset", NULL, "utf-8");
 961
 962         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 963                      "attributes-natural-language", NULL, language->language);
 964
 965         if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
 966                 goto out;
 967         }
 968         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
 969                  printername);
 970
 971         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 972                      "printer-uri", NULL, uri);
 973
 974         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 975                 goto out;
 976         }
 977         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 978                      NULL, user);
 979
 980         clientname = client_name(get_client_fd());
 981         if (strcmp(clientname, "UNKNOWN") == 0) {
 982                 clientname = client_addr(get_client_fd(),addr,sizeof(addr));
 983         }
 984
 985         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 986                      "job-originating-host-name", NULL,
 987                       clientname);
 988
 989         /* Get the jobid from the filename. */
 990         jobid = print_parse_jobid(pjob->filename);
 991         if (jobid == (uint32_t)-1) {
 992                 DEBUG(0,("cups_job_submit: failed to parse jobid from name %s\n",
 993                                 pjob->filename ));
 994                 jobid = 0;
 995         }
 996
 997         if (!push_utf8_talloc(frame, &jobname, pjob->jobname, &size)) {
 998                 goto out;
 999         }
1000         new_jobname = talloc_asprintf(frame,
1001                         "%s%.8u %s", PRINT_SPOOL_PREFIX,
1002                         (unsigned int)jobid,
1003                         jobname);
1004         if (new_jobname == NULL) {
1005                 goto out;
1006         }
1007
1008         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
1009                      new_jobname);
1010
1011         /*
1012          * add any options defined in smb.conf
1013          */
1014
1015         if (!push_utf8_talloc(frame, &cupsoptions, lp_cups_options(snum), &size)) {
1016                 goto out;
1017         }
1018         num_options = 0;
1019         options     = NULL;
1020         num_options = cupsParseOptions(cupsoptions, num_options, &options);
1021
1022         if ( num_options )
1023                 cupsEncodeOptions(request, num_options, options);
1024
1025        /*
1026         * Do the request and get back a response...
1027         */
1028
1029         slprintf(uri, sizeof(uri) - 1, "/printers/%s", printername);
1030
1031         if (!push_utf8_talloc(frame, &filename, pjob->filename, &size)) {
1032                 goto out;
1033         }
1034         if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
1035                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1036                         DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
1037                                  ippErrorString(cupsLastError())));
1038                 } else {
1039                         ret = 0;
1040                         attr_job_id = ippFindAttribute(response, "job-id", IPP_TAG_INTEGER);
1041                         if(attr_job_id) {
1042                                 pjob->sysjob = attr_job_id->values[0].integer;
1043                                 DEBUG(5,("cups_job_submit: job-id %d\n", pjob->sysjob));
1044                         } else {
1045                                 DEBUG(0,("Missing job-id attribute in IPP response"));
1046                         }
1047                 }
1048         } else {
1049                 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
1050                          ippErrorString(cupsLastError())));
1051         }
1052
1053         if ( ret == 0 )
1054                 unlink(pjob->filename);
1055         /* else print_job_end will do it for us */
1056
1057  out:
1058         if (response)
1059                 ippDelete(response);
1060
1061         if (language)
1062                 cupsLangFree(language);
1063
1064         if (http)
1065                 httpClose(http);
1066
1067         TALLOC_FREE(frame);
1068
1069         return ret;
1070 }
1071
1072 /*
1073  * 'cups_queue_get()' - Get all the jobs in the print queue.
1074  */
1075
1076 static int cups_queue_get(const char *sharename,
1077                enum printing_types printing_type,
1078                char *lpq_command,
1079                print_queue_struct **q,
1080                print_status_struct *status)
1081 {
1082         TALLOC_CTX *frame = talloc_stackframe();
1083         char *printername = NULL;
1084         http_t          *http = NULL;           /* HTTP connection to server */
1085         ipp_t           *request = NULL,        /* IPP Request */
1086                         *response = NULL;       /* IPP Response */
1087         ipp_attribute_t *attr = NULL;           /* Current attribute */
1088         cups_lang_t     *language = NULL;       /* Default language */
1089         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1090         int             qcount = 0,             /* Number of active queue entries */
1091                         qalloc = 0;             /* Number of queue entries allocated */
1092         print_queue_struct *queue = NULL,       /* Queue entries */
1093                         *temp;          /* Temporary pointer for queue */
1094         char            *user_name = NULL,      /* job-originating-user-name attribute */
1095                         *job_name = NULL;       /* job-name attribute */
1096         int             job_id;         /* job-id attribute */
1097         int             job_k_octets;   /* job-k-octets attribute */
1098         time_t          job_time;       /* time-at-creation attribute */
1099         ipp_jstate_t    job_status;     /* job-status attribute */
1100         int             job_priority;   /* job-priority attribute */
1101         size_t size;
1102         static const char *jattrs[] =   /* Requested job attributes */
1103                         {
1104                           "job-id",
1105                           "job-k-octets",
1106                           "job-name",
1107                           "job-originating-user-name",
1108                           "job-priority",
1109                           "job-state",
1110                           "time-at-creation",
1111                         };
1112         static const char *pattrs[] =   /* Requested printer attributes */
1113                         {
1114                           "printer-state",
1115                           "printer-state-message"
1116                         };
1117
1118         *q = NULL;
1119
1120         /* HACK ALERT!!!  The problem with support the 'printer name'
1121            option is that we key the tdb off the sharename.  So we will
1122            overload the lpq_command string to pass in the printername
1123            (which is basically what we do for non-cups printers ... using
1124            the lpq_command to get the queue listing). */
1125
1126         if (!push_utf8_talloc(frame, &printername, lpq_command, &size)) {
1127                 goto out;
1128         }
1129         DEBUG(5,("cups_queue_get(%s, %p, %p)\n", lpq_command, q, status));
1130
1131        /*
1132         * Make sure we don't ask for passwords...
1133         */
1134
1135         cupsSetPasswordCB(cups_passwd_cb);
1136
1137        /*
1138         * Try to connect to the server...
1139         */
1140
1141         if ((http = cups_connect(frame)) == NULL) {
1142                 goto out;
1143         }
1144
1145        /*
1146         * Generate the printer URI...
1147         */
1148
1149         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", printername);
1150
1151        /*
1152         * Build an IPP_GET_JOBS request, which requires the following
1153         * attributes:
1154         *
1155         *    attributes-charset
1156         *    attributes-natural-language
1157         *    requested-attributes
1158         *    printer-uri
1159         */
1160
1161         request = ippNew();
1162
1163         request->request.op.operation_id = IPP_GET_JOBS;
1164         request->request.op.request_id   = 1;
1165
1166         language = cupsLangDefault();
1167
1168         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1169                      "attributes-charset", NULL, "utf-8");
1170
1171         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1172                      "attributes-natural-language", NULL, language->language);
1173
1174         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1175                       "requested-attributes",
1176                       (sizeof(jattrs) / sizeof(jattrs[0])),
1177                       NULL, jattrs);
1178
1179         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1180                      "printer-uri", NULL, uri);
1181
1182        /*
1183         * Do the request and get back a response...
1184         */
1185
1186         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1187                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1188                          ippErrorString(cupsLastError())));
1189                 goto out;
1190         }
1191
1192         if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1193                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1194                          ippErrorString(response->request.status.status_code)));
1195                 goto out;
1196         }
1197
1198        /*
1199         * Process the jobs...
1200         */
1201
1202         qcount = 0;
1203         qalloc = 0;
1204         queue  = NULL;
1205
1206         for (attr = response->attrs; attr != NULL; attr = attr->next) {
1207                /*
1208                 * Skip leading attributes until we hit a job...
1209                 */
1210
1211                 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
1212                         attr = attr->next;
1213
1214                 if (attr == NULL)
1215                         break;
1216
1217                /*
1218                 * Allocate memory as needed...
1219                 */
1220                 if (qcount >= qalloc) {
1221                         qalloc += 16;
1222
1223                         queue = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
1224
1225                         if (queue == NULL) {
1226                                 DEBUG(0,("cups_queue_get: Not enough memory!"));
1227                                 qcount = 0;
1228                                 goto out;
1229                         }
1230                 }
1231
1232                 temp = queue + qcount;
1233                 memset(temp, 0, sizeof(print_queue_struct));
1234
1235                /*
1236                 * Pull the needed attributes from this job...
1237                 */
1238
1239                 job_id       = 0;
1240                 job_priority = 50;
1241                 job_status   = IPP_JOB_PENDING;
1242                 job_time     = 0;
1243                 job_k_octets = 0;
1244                 user_name    = NULL;
1245                 job_name     = NULL;
1246
1247                 while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
1248                         if (attr->name == NULL) {
1249                                 attr = attr->next;
1250                                 break;
1251                         }
1252
1253                         if (strcmp(attr->name, "job-id") == 0 &&
1254                             attr->value_tag == IPP_TAG_INTEGER)
1255                                 job_id = attr->values[0].integer;
1256
1257                         if (strcmp(attr->name, "job-k-octets") == 0 &&
1258                             attr->value_tag == IPP_TAG_INTEGER)
1259                                 job_k_octets = attr->values[0].integer;
1260
1261                         if (strcmp(attr->name, "job-priority") == 0 &&
1262                             attr->value_tag == IPP_TAG_INTEGER)
1263                                 job_priority = attr->values[0].integer;
1264
1265                         if (strcmp(attr->name, "job-state") == 0 &&
1266                             attr->value_tag == IPP_TAG_ENUM)
1267                                 job_status = (ipp_jstate_t)(attr->values[0].integer);
1268
1269                         if (strcmp(attr->name, "time-at-creation") == 0 &&
1270                             attr->value_tag == IPP_TAG_INTEGER)
1271                                 job_time = attr->values[0].integer;
1272
1273                         if (strcmp(attr->name, "job-name") == 0 &&
1274                             attr->value_tag == IPP_TAG_NAME) {
1275                                 if (!pull_utf8_talloc(frame,
1276                                                 &job_name,
1277                                                 attr->values[0].string.text,
1278                                                 &size)) {
1279                                         goto out;
1280                                 }
1281                         }
1282
1283                         if (strcmp(attr->name, "job-originating-user-name") == 0 &&
1284                             attr->value_tag == IPP_TAG_NAME) {
1285                                 if (!pull_utf8_talloc(frame,
1286                                                 &user_name,
1287                                                 attr->values[0].string.text,
1288                                                 &size)) {
1289                                         goto out;
1290                                 }
1291                         }
1292
1293                         attr = attr->next;
1294                 }
1295
1296                /*
1297                 * See if we have everything needed...
1298                 */
1299
1300                 if (user_name == NULL || job_name == NULL || job_id == 0) {
1301                         if (attr == NULL)
1302                                 break;
1303                         else
1304                                 continue;
1305                 }
1306
1307                 temp->job      = job_id;
1308                 temp->size     = job_k_octets * 1024;
1309                 temp->status   = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1310                                  job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1311                                  job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1312                                  LPQ_PRINTING;
1313                 temp->priority = job_priority;
1314                 temp->time     = job_time;
1315                 strlcpy(temp->fs_user, user_name, sizeof(temp->fs_user));
1316                 strlcpy(temp->fs_file, job_name, sizeof(temp->fs_file));
1317
1318                 qcount ++;
1319
1320                 if (attr == NULL)
1321                         break;
1322         }
1323
1324         ippDelete(response);
1325         response = NULL;
1326
1327        /*
1328         * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1329         * following attributes:
1330         *
1331         *    attributes-charset
1332         *    attributes-natural-language
1333         *    requested-attributes
1334         *    printer-uri
1335         */
1336
1337         request = ippNew();
1338
1339         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1340         request->request.op.request_id   = 1;
1341
1342         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1343                      "attributes-charset", NULL, "utf-8");
1344
1345         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1346                      "attributes-natural-language", NULL, language->language);
1347
1348         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1349                       "requested-attributes",
1350                       (sizeof(pattrs) / sizeof(pattrs[0])),
1351                       NULL, pattrs);
1352
1353         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1354                      "printer-uri", NULL, uri);
1355
1356        /*
1357         * Do the request and get back a response...
1358         */
1359
1360         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1361                 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1362                          ippErrorString(cupsLastError())));
1363                 goto out;
1364         }
1365
1366         if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1367                 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1368                          ippErrorString(response->request.status.status_code)));
1369                 goto out;
1370         }
1371
1372        /*
1373         * Get the current printer status and convert it to the SAMBA values.
1374         */
1375
1376         if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
1377                 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1378                         status->status = LPSTAT_STOPPED;
1379                 else
1380                         status->status = LPSTAT_OK;
1381         }
1382
1383         if ((attr = ippFindAttribute(response, "printer-state-message",
1384                                      IPP_TAG_TEXT)) != NULL) {
1385                 char *msg = NULL;
1386                 if (!pull_utf8_talloc(frame, &msg,
1387                                 attr->values[0].string.text,
1388                                 &size)) {
1389                         SAFE_FREE(queue);
1390                         qcount = 0;
1391                         goto out;
1392                 }
1393                 fstrcpy(status->message, msg);
1394         }
1395
1396  out:
1397
1398        /*
1399         * Return the job queue...
1400         */
1401
1402         *q = queue;
1403
1404         if (response)
1405                 ippDelete(response);
1406
1407         if (language)
1408                 cupsLangFree(language);
1409
1410         if (http)
1411                 httpClose(http);
1412
1413         TALLOC_FREE(frame);
1414         return qcount;
1415 }
1416
1417
1418 /*
1419  * 'cups_queue_pause()' - Pause a print queue.
1420  */
1421
1422 static int cups_queue_pause(int snum)
1423 {
1424         TALLOC_CTX *frame = talloc_stackframe();
1425         int             ret = 1;                /* Return value */
1426         http_t          *http = NULL;           /* HTTP connection to server */
1427         ipp_t           *request = NULL,        /* IPP Request */
1428                         *response = NULL;       /* IPP Response */
1429         cups_lang_t     *language = NULL;       /* Default language */
1430         char *printername = NULL;
1431         char *username = NULL;
1432         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1433         size_t size;
1434
1435         DEBUG(5,("cups_queue_pause(%d)\n", snum));
1436
1437         /*
1438          * Make sure we don't ask for passwords...
1439          */
1440
1441         cupsSetPasswordCB(cups_passwd_cb);
1442
1443         /*
1444          * Try to connect to the server...
1445          */
1446
1447         if ((http = cups_connect(frame)) == NULL) {
1448                 goto out;
1449         }
1450
1451         /*
1452          * Build an IPP_PAUSE_PRINTER request, which requires the following
1453          * attributes:
1454          *
1455          *    attributes-charset
1456          *    attributes-natural-language
1457          *    printer-uri
1458          *    requesting-user-name
1459          */
1460
1461         request = ippNew();
1462
1463         request->request.op.operation_id = IPP_PAUSE_PRINTER;
1464         request->request.op.request_id   = 1;
1465
1466         language = cupsLangDefault();
1467
1468         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1469                      "attributes-charset", NULL, "utf-8");
1470
1471         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1472                      "attributes-natural-language", NULL, language->language);
1473
1474         if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1475                 goto out;
1476         }
1477         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1478                  printername);
1479
1480         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1481
1482         if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1483                 goto out;
1484         }
1485         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1486                      NULL, username);
1487
1488        /*
1489         * Do the request and get back a response...
1490         */
1491
1492         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1493                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1494                         DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1495                                 ippErrorString(cupsLastError())));
1496                 } else {
1497                         ret = 0;
1498                 }
1499         } else {
1500                 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1501                         ippErrorString(cupsLastError())));
1502         }
1503
1504  out:
1505         if (response)
1506                 ippDelete(response);
1507
1508         if (language)
1509                 cupsLangFree(language);
1510
1511         if (http)
1512                 httpClose(http);
1513
1514         TALLOC_FREE(frame);
1515         return ret;
1516 }
1517
1518
1519 /*
1520  * 'cups_queue_resume()' - Restart a print queue.
1521  */
1522
1523 static int cups_queue_resume(int snum)
1524 {
1525         TALLOC_CTX *frame = talloc_stackframe();
1526         int             ret = 1;                /* Return value */
1527         http_t          *http = NULL;           /* HTTP connection to server */
1528         ipp_t           *request = NULL,        /* IPP Request */
1529                         *response = NULL;       /* IPP Response */
1530         cups_lang_t     *language = NULL;       /* Default language */
1531         char *printername = NULL;
1532         char *username = NULL;
1533         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1534         size_t size;
1535
1536         DEBUG(5,("cups_queue_resume(%d)\n", snum));
1537
1538        /*
1539         * Make sure we don't ask for passwords...
1540         */
1541
1542         cupsSetPasswordCB(cups_passwd_cb);
1543
1544        /*
1545         * Try to connect to the server...
1546         */
1547
1548         if ((http = cups_connect(frame)) == NULL) {
1549                 goto out;
1550         }
1551
1552        /*
1553         * Build an IPP_RESUME_PRINTER request, which requires the following
1554         * attributes:
1555         *
1556         *    attributes-charset
1557         *    attributes-natural-language
1558         *    printer-uri
1559         *    requesting-user-name
1560         */
1561
1562         request = ippNew();
1563
1564         request->request.op.operation_id = IPP_RESUME_PRINTER;
1565         request->request.op.request_id   = 1;
1566
1567         language = cupsLangDefault();
1568
1569         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1570                      "attributes-charset", NULL, "utf-8");
1571
1572         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1573                      "attributes-natural-language", NULL, language->language);
1574
1575         if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1576                 goto out;
1577         }
1578         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1579                  printername);
1580
1581         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1582
1583         if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1584                 goto out;
1585         }
1586         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1587                      NULL, username);
1588
1589        /*
1590         * Do the request and get back a response...
1591         */
1592
1593         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1594                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1595                         DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1596                                 ippErrorString(cupsLastError())));
1597                 } else {
1598                         ret = 0;
1599                 }
1600         } else {
1601                 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1602                         ippErrorString(cupsLastError())));
1603         }
1604
1605  out:
1606         if (response)
1607                 ippDelete(response);
1608
1609         if (language)
1610                 cupsLangFree(language);
1611
1612         if (http)
1613                 httpClose(http);
1614
1615         TALLOC_FREE(frame);
1616         return ret;
1617 }
1618
1619 /*******************************************************************
1620  * CUPS printing interface definitions...
1621  ******************************************************************/
1622
1623 struct printif  cups_printif =
1624 {
1625         PRINT_CUPS,
1626         cups_queue_get,
1627         cups_queue_pause,
1628         cups_queue_resume,
1629         cups_job_delete,
1630         cups_job_pause,
1631         cups_job_resume,
1632         cups_job_submit,
1633 };
1634
1635 bool cups_pull_comment_location(TALLOC_CTX *mem_ctx,
1636                                 const char *printername,
1637                                 char **comment,
1638                                 char **location)
1639 {
1640         TALLOC_CTX *frame = talloc_stackframe();
1641         http_t          *http = NULL;           /* HTTP connection to server */
1642         ipp_t           *request = NULL,        /* IPP Request */
1643                         *response = NULL;       /* IPP Response */
1644         ipp_attribute_t *attr;          /* Current attribute */
1645         cups_lang_t     *language = NULL;       /* Default language */
1646         char            uri[HTTP_MAX_URI];
1647         char *server = NULL;
1648         char *sharename = NULL;
1649         char *name = NULL;
1650         static const char *requested[] =/* Requested attributes */
1651                         {
1652                           "printer-name",
1653                           "printer-info",
1654                           "printer-location"
1655                         };
1656         bool ret = False;
1657         size_t size;
1658
1659         DEBUG(5, ("pulling %s location\n", printername));
1660
1661         /*
1662          * Make sure we don't ask for passwords...
1663          */
1664
1665         cupsSetPasswordCB(cups_passwd_cb);
1666
1667         /*
1668          * Try to connect to the server...
1669          */
1670
1671         if ((http = cups_connect(frame)) == NULL) {
1672                 goto out;
1673         }
1674
1675         request = ippNew();
1676
1677         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1678         request->request.op.request_id   = 1;
1679
1680         language = cupsLangDefault();
1681
1682         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1683                      "attributes-charset", NULL, "utf-8");
1684
1685         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1686                      "attributes-natural-language", NULL, language->language);
1687
1688         if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
1689                 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
1690                         goto out;
1691                 }
1692         } else {
1693                 server = talloc_strdup(frame,cupsServer());
1694         }
1695         if (server) {
1696                 goto out;
1697         }
1698         if (!push_utf8_talloc(frame, &sharename, printername, &size)) {
1699                 goto out;
1700         }
1701         slprintf(uri, sizeof(uri) - 1, "ipp://%s/printers/%s",
1702                  server, sharename);
1703
1704         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1705                      "printer-uri", NULL, uri);
1706
1707         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1708                       "requested-attributes",
1709                       (sizeof(requested) / sizeof(requested[0])),
1710                       NULL, requested);
1711
1712         /*
1713          * Do the request and get back a response...
1714          */
1715
1716         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1717                 DEBUG(0,("Unable to get printer attributes - %s\n",
1718                          ippErrorString(cupsLastError())));
1719                 goto out;
1720         }
1721
1722         for (attr = response->attrs; attr != NULL;) {
1723                 /*
1724                  * Skip leading attributes until we hit a printer...
1725                  */
1726
1727                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
1728                         attr = attr->next;
1729
1730                 if (attr == NULL)
1731                         break;
1732
1733                 /*
1734                  * Pull the needed attributes from this printer...
1735                  */
1736
1737                 while ( attr && (attr->group_tag == IPP_TAG_PRINTER) ) {
1738                         if (strcmp(attr->name, "printer-name") == 0 &&
1739                             attr->value_tag == IPP_TAG_NAME) {
1740                                 if (!pull_utf8_talloc(frame,
1741                                                 &name,
1742                                                 attr->values[0].string.text,
1743                                                 &size)) {
1744                                         goto out;
1745                                 }
1746                         }
1747
1748                         /* Grab the comment if we don't have one */
1749                         if ( (strcmp(attr->name, "printer-info") == 0)
1750                              && (attr->value_tag == IPP_TAG_TEXT))
1751                         {
1752                                 if (!pull_utf8_talloc(mem_ctx,
1753                                                 comment,
1754                                                 attr->values[0].string.text,
1755                                                 &size)) {
1756                                         goto out;
1757                                 }
1758                                 DEBUG(5,("cups_pull_comment_location: Using cups comment: %s\n",
1759                                          *comment));
1760                         }
1761
1762                         /* Grab the location if we don't have one */
1763                         if ( (strcmp(attr->name, "printer-location") == 0)
1764                              && (attr->value_tag == IPP_TAG_TEXT))
1765                         {
1766                                 if (!pull_utf8_talloc(mem_ctx,
1767                                                 location,
1768                                                 attr->values[0].string.text,
1769                                                 &size)) {
1770                                         goto out;
1771                                 }
1772                                 DEBUG(5,("cups_pull_comment_location: Using cups location: %s\n",
1773                                          *location));
1774                         }
1775
1776                         attr = attr->next;
1777                 }
1778
1779                 /*
1780                  * We have everything needed...
1781                  */
1782
1783                 if (name != NULL)
1784                         break;
1785         }
1786
1787         ret = True;
1788
1789  out:
1790         if (response)
1791                 ippDelete(response);
1792
1793         if (request) {
1794                 ippDelete(request);
1795         }
1796
1797         if (language)
1798                 cupsLangFree(language);
1799
1800         if (http)
1801                 httpClose(http);
1802
1803         TALLOC_FREE(frame);
1804         return ret;
1805 }
1806
1807 #else
1808  /* this keeps fussy compilers happy */
1809  void print_cups_dummy(void);
1810  void print_cups_dummy(void) {}
1811 #endif /* HAVE_CUPS */