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
  28 #ifdef HAVE_CUPS
  29 #include <cups/cups.h>
  30 #include <cups/language.h>
  31
  32 static SIG_ATOMIC_T gotalarm;
  33
  34 /***************************************************************
  35  Signal function to tell us we timed out.
  36 ****************************************************************/
  37
  38 static void gotalarm_sig(void)
  39 {
  40         gotalarm = 1;
  41 }
  42
  43 extern userdom_struct current_user_info;
  44
  45 /*
  46  * 'cups_passwd_cb()' - The CUPS password callback...
  47  */
  48
  49 static const char *                             /* O - Password or NULL */
  50 cups_passwd_cb(const char *prompt)      /* I - Prompt */
  51 {
  52         /*
  53          * Always return NULL to indicate that no password is available...
  54          */
  55
  56         return (NULL);
  57 }
  58
  59 static http_t *cups_connect(TALLOC_CTX *frame)
  60 {
  61         http_t *http = NULL;
  62         char *server = NULL, *p = NULL;
  63         int port;
  64         int timeout = lp_cups_connection_timeout();
  65         size_t size;
  66
  67         if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
  68                 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
  69                         return NULL;
  70                 }
  71         } else {
  72                 server = talloc_strdup(frame,cupsServer());
  73         }
  74         if (!server) {
  75                 return NULL;
  76         }
  77
  78         p = strchr(server, ':');
  79         if (p) {
  80                 port = atoi(p+1);
  81                 *p = '\0';
  82         } else {
  83                 port = ippPort();
  84         }
  85
  86         DEBUG(10, ("connecting to cups server %s:%d\n",
  87                    server, port));
  88
  89         gotalarm = 0;
  90
  91         if (timeout) {
  92                 CatchSignal(SIGALRM, SIGNAL_CAST gotalarm_sig);
  93                 alarm(timeout);
  94         }
  95
  96         http = httpConnect(server, port);
  97
  98         CatchSignal(SIGALRM, SIGNAL_CAST SIG_IGN);
  99         alarm(0);
 100
 101         if (http == NULL) {
 102                 DEBUG(0,("Unable to connect to CUPS server %s:%d - %s\n",
 103                          server, port, strerror(errno)));
 104         }
 105
 106         return http;
 107 }
 108
 109 static void send_pcap_info(const char *name, const char *info, void *pd)
 110 {
 111         int fd = *(int *)pd;
 112         size_t namelen = name ? strlen(name)+1 : 0;
 113         size_t infolen = info ? strlen(info)+1 : 0;
 114
 115         DEBUG(11,("send_pcap_info: writing namelen %u\n", (unsigned int)namelen));
 116         if (sys_write(fd, &namelen, sizeof(namelen)) != sizeof(namelen)) {
 117                 DEBUG(10,("send_pcap_info: namelen write failed %s\n",
 118                         strerror(errno)));
 119                 return;
 120         }
 121         DEBUG(11,("send_pcap_info: writing infolen %u\n", (unsigned int)infolen));
 122         if (sys_write(fd, &infolen, sizeof(infolen)) != sizeof(infolen)) {
 123                 DEBUG(10,("send_pcap_info: infolen write failed %s\n",
 124                         strerror(errno)));
 125                 return;
 126         }
 127         if (namelen) {
 128                 DEBUG(11,("send_pcap_info: writing name %s\n", name));
 129                 if (sys_write(fd, name, namelen) != namelen) {
 130                         DEBUG(10,("send_pcap_info: name write failed %s\n",
 131                                 strerror(errno)));
 132                         return;
 133                 }
 134         }
 135         if (infolen) {
 136                 DEBUG(11,("send_pcap_info: writing info %s\n", info));
 137                 if (sys_write(fd, info, infolen) != infolen) {
 138                         DEBUG(10,("send_pcap_info: info write failed %s\n",
 139                                 strerror(errno)));
 140                         return;
 141                 }
 142         }
 143 }
 144
 145 static bool cups_cache_reload_async(int fd)
 146 {
 147         TALLOC_CTX *frame = talloc_stackframe();
 148         struct pcap_cache *tmp_pcap_cache = NULL;
 149         http_t          *http = NULL;           /* HTTP connection to server */
 150         ipp_t           *request = NULL,        /* IPP Request */
 151                         *response = NULL;       /* IPP Response */
 152         ipp_attribute_t *attr;          /* Current attribute */
 153         cups_lang_t     *language = NULL;       /* Default language */
 154         char            *name,          /* printer-name attribute */
 155                         *info;          /* printer-info attribute */
 156         static const char *requested[] =/* Requested attributes */
 157                         {
 158                           "printer-name",
 159                           "printer-info"
 160                         };
 161         bool ret = False;
 162         size_t size;
 163
 164         DEBUG(5, ("reloading cups printcap cache\n"));
 165
 166        /*
 167         * Make sure we don't ask for passwords...
 168         */
 169
 170         cupsSetPasswordCB(cups_passwd_cb);
 171
 172        /*
 173         * Try to connect to the server...
 174         */
 175
 176         if ((http = cups_connect(frame)) == NULL) {
 177                 goto out;
 178         }
 179
 180        /*
 181         * Build a CUPS_GET_PRINTERS request, which requires the following
 182         * attributes:
 183         *
 184         *    attributes-charset
 185         *    attributes-natural-language
 186         *    requested-attributes
 187         */
 188
 189         request = ippNew();
 190
 191         request->request.op.operation_id = CUPS_GET_PRINTERS;
 192         request->request.op.request_id   = 1;
 193
 194         language = cupsLangDefault();
 195
 196         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 197                      "attributes-charset", NULL, "utf-8");
 198
 199         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 200                      "attributes-natural-language", NULL, language->language);
 201
 202         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 203                       "requested-attributes",
 204                       (sizeof(requested) / sizeof(requested[0])),
 205                       NULL, requested);
 206
 207        /*
 208         * Do the request and get back a response...
 209         */
 210
 211         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
 212                 DEBUG(0,("Unable to get printer list - %s\n",
 213                          ippErrorString(cupsLastError())));
 214                 goto out;
 215         }
 216
 217         for (attr = response->attrs; attr != NULL;) {
 218                /*
 219                 * Skip leading attributes until we hit a printer...
 220                 */
 221
 222                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 223                         attr = attr->next;
 224
 225                 if (attr == NULL)
 226                         break;
 227
 228                /*
 229                 * Pull the needed attributes from this printer...
 230                 */
 231
 232                 name       = NULL;
 233                 info       = NULL;
 234
 235                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
 236                         if (strcmp(attr->name, "printer-name") == 0 &&
 237                             attr->value_tag == IPP_TAG_NAME) {
 238                                 if (!pull_utf8_talloc(frame,
 239                                                 &name,
 240                                                 attr->values[0].string.text,
 241                                                 &size)) {
 242                                         goto out;
 243                                 }
 244                         }
 245
 246                         if (strcmp(attr->name, "printer-info") == 0 &&
 247                             attr->value_tag == IPP_TAG_TEXT) {
 248                                 if (!pull_utf8_talloc(frame,
 249                                                 &info,
 250                                                 attr->values[0].string.text,
 251                                                 &size)) {
 252                                         goto out;
 253                                 }
 254                         }
 255
 256                         attr = attr->next;
 257                 }
 258
 259                /*
 260                 * See if we have everything needed...
 261                 */
 262
 263                 if (name == NULL)
 264                         break;
 265
 266                 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
 267                         goto out;
 268                 }
 269         }
 270
 271         ippDelete(response);
 272         response = NULL;
 273
 274        /*
 275         * Build a CUPS_GET_CLASSES request, which requires the following
 276         * attributes:
 277         *
 278         *    attributes-charset
 279         *    attributes-natural-language
 280         *    requested-attributes
 281         */
 282
 283         request = ippNew();
 284
 285         request->request.op.operation_id = CUPS_GET_CLASSES;
 286         request->request.op.request_id   = 1;
 287
 288         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 289                      "attributes-charset", NULL, "utf-8");
 290
 291         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 292                      "attributes-natural-language", NULL, language->language);
 293
 294         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 295                       "requested-attributes",
 296                       (sizeof(requested) / sizeof(requested[0])),
 297                       NULL, requested);
 298
 299        /*
 300         * Do the request and get back a response...
 301         */
 302
 303         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
 304                 DEBUG(0,("Unable to get printer list - %s\n",
 305                          ippErrorString(cupsLastError())));
 306                 goto out;
 307         }
 308
 309         for (attr = response->attrs; attr != NULL;) {
 310                /*
 311                 * Skip leading attributes until we hit a printer...
 312                 */
 313
 314                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
 315                         attr = attr->next;
 316
 317                 if (attr == NULL)
 318                         break;
 319
 320                /*
 321                 * Pull the needed attributes from this printer...
 322                 */
 323
 324                 name       = NULL;
 325                 info       = NULL;
 326
 327                 while (attr != NULL && attr->group_tag == IPP_TAG_PRINTER) {
 328                         if (strcmp(attr->name, "printer-name") == 0 &&
 329                             attr->value_tag == IPP_TAG_NAME) {
 330                                 if (!pull_utf8_talloc(frame,
 331                                                 &name,
 332                                                 attr->values[0].string.text,
 333                                                 &size)) {
 334                                         goto out;
 335                                 }
 336                         }
 337
 338                         if (strcmp(attr->name, "printer-info") == 0 &&
 339                             attr->value_tag == IPP_TAG_TEXT) {
 340                                 if (!pull_utf8_talloc(frame,
 341                                                 &info,
 342                                                 attr->values[0].string.text,
 343                                                 &size)) {
 344                                         goto out;
 345                                 }
 346                         }
 347
 348                         attr = attr->next;
 349                 }
 350
 351                /*
 352                 * See if we have everything needed...
 353                 */
 354
 355                 if (name == NULL)
 356                         break;
 357
 358                 if (!pcap_cache_add_specific(&tmp_pcap_cache, name, info)) {
 359                         goto out;
 360                 }
 361         }
 362
 363         ret = True;
 364
 365  out:
 366         if (response)
 367                 ippDelete(response);
 368
 369         if (language)
 370                 cupsLangFree(language);
 371
 372         if (http)
 373                 httpClose(http);
 374
 375         /* Send all the entries up the pipe. */
 376         if (tmp_pcap_cache) {
 377                 pcap_printer_fn_specific(tmp_pcap_cache,
 378                                 send_pcap_info,
 379                                 (void *)&fd);
 380
 381                 pcap_cache_destroy_specific(&tmp_pcap_cache);
 382         }
 383         TALLOC_FREE(frame);
 384         return ret;
 385 }
 386
 387 static struct pcap_cache *local_pcap_copy;
 388 struct fd_event *cache_fd_event;
 389
 390 static bool cups_pcap_load_async(int *pfd)
 391 {
 392         int fds[2];
 393         pid_t pid;
 394
 395         *pfd = -1;
 396
 397         if (cache_fd_event) {
 398                 DEBUG(3,("cups_pcap_load_async: already waiting for "
 399                         "a refresh event\n" ));
 400                 return false;
 401         }
 402
 403         DEBUG(5,("cups_pcap_load_async: asynchronously loading cups printers\n"));
 404
 405         if (pipe(fds) == -1) {
 406                 return false;
 407         }
 408
 409         pid = sys_fork();
 410         if (pid == (pid_t)-1) {
 411                 DEBUG(10,("cups_pcap_load_async: fork failed %s\n",
 412                         strerror(errno) ));
 413                 close(fds[0]);
 414                 close(fds[1]);
 415                 return false;
 416         }
 417
 418         if (pid) {
 419                 DEBUG(10,("cups_pcap_load_async: child pid = %u\n",
 420                         (unsigned int)pid ));
 421                 /* Parent. */
 422                 close(fds[1]);
 423                 *pfd = fds[0];
 424                 return true;
 425         }
 426
 427         /* Child. */
 428         if (!reinit_after_fork(smbd_messaging_context(), true)) {
 429                 DEBUG(0,("cups_pcap_load_async: reinit_after_fork() failed\n"));
 430                 smb_panic("cups_pcap_load_async: reinit_after_fork() failed");
 431         }
 432
 433         close(fds[0]);
 434         cups_cache_reload_async(fds[1]);
 435         close(fds[1]);
 436         _exit(0);
 437 }
 438
 439 static void cups_async_callback(struct event_context *event_ctx,
 440                                 struct fd_event *event,
 441                                 uint16 flags,
 442                                 void *p)
 443 {
 444         TALLOC_CTX *frame = talloc_stackframe();
 445         int fd = *(int *)p;
 446         struct pcap_cache *tmp_pcap_cache = NULL;
 447
 448         DEBUG(5,("cups_async_callback: callback received for printer data. "
 449                 "fd = %d\n", fd));
 450
 451         while (1) {
 452                 char *name = NULL, *info = NULL;
 453                 size_t namelen = 0, infolen = 0;
 454                 ssize_t ret = -1;
 455
 456                 ret = sys_read(fd, &namelen, sizeof(namelen));
 457                 if (ret == 0) {
 458                         /* EOF */
 459                         break;
 460                 }
 461                 if (ret != sizeof(namelen)) {
 462                         DEBUG(10,("cups_async_callback: namelen read failed %d %s\n",
 463                                 errno, strerror(errno)));
 464                         break;
 465                 }
 466
 467                 DEBUG(11,("cups_async_callback: read namelen %u\n",
 468                         (unsigned int)namelen));
 469
 470                 ret = sys_read(fd, &infolen, sizeof(infolen));
 471                 if (ret == 0) {
 472                         /* EOF */
 473                         break;
 474                 }
 475                 if (ret != sizeof(infolen)) {
 476                         DEBUG(10,("cups_async_callback: infolen read failed %s\n",
 477                                 strerror(errno)));
 478                         break;
 479                 }
 480
 481                 DEBUG(11,("cups_async_callback: read infolen %u\n",
 482                         (unsigned int)infolen));
 483
 484                 if (namelen) {
 485                         name = TALLOC_ARRAY(frame, char, namelen);
 486                         if (!name) {
 487                                 break;
 488                         }
 489                         ret = sys_read(fd, name, namelen);
 490                         if (ret == 0) {
 491                                 /* EOF */
 492                                 break;
 493                         }
 494                         if (ret != namelen) {
 495                                 DEBUG(10,("cups_async_callback: name read failed %s\n",
 496                                         strerror(errno)));
 497                                 break;
 498                         }
 499                         DEBUG(11,("cups_async_callback: read name %s\n",
 500                                 name));
 501                 } else {
 502                         name = NULL;
 503                 }
 504                 if (infolen) {
 505                         info = TALLOC_ARRAY(frame, char, infolen);
 506                         if (!info) {
 507                                 break;
 508                         }
 509                         ret = sys_read(fd, info, infolen);
 510                         if (ret == 0) {
 511                                 /* EOF */
 512                                 break;
 513                         }
 514                         if (ret != infolen) {
 515                                 DEBUG(10,("cups_async_callback: info read failed %s\n",
 516                                         strerror(errno)));
 517                                 break;
 518                         }
 519                         DEBUG(11,("cups_async_callback: read info %s\n",
 520                                 info));
 521                 } else {
 522                         info = NULL;
 523                 }
 524
 525                 /* Add to our local pcap cache. */
 526                 pcap_cache_add_specific(&tmp_pcap_cache, name, info);
 527                 TALLOC_FREE(name);
 528                 TALLOC_FREE(info);
 529         }
 530
 531         TALLOC_FREE(frame);
 532         if (tmp_pcap_cache) {
 533                 /* We got a namelist, replace our local cache. */
 534                 pcap_cache_destroy_specific(&local_pcap_copy);
 535                 local_pcap_copy = tmp_pcap_cache;
 536
 537                 /* And the systemwide pcap cache. */
 538                 pcap_cache_replace(local_pcap_copy);
 539         } else {
 540                 DEBUG(2,("cups_async_callback: failed to read a new "
 541                         "printer list\n"));
 542         }
 543         close(fd);
 544         TALLOC_FREE(p);
 545         TALLOC_FREE(cache_fd_event);
 546 }
 547
 548 bool cups_cache_reload(void)
 549 {
 550         int *p_pipe_fd = TALLOC_P(NULL, int);
 551
 552         if (!p_pipe_fd) {
 553                 return false;
 554         }
 555
 556         /* Set up an async refresh. */
 557         if (!cups_pcap_load_async(p_pipe_fd)) {
 558                 return false;
 559         }
 560         if (!local_pcap_copy) {
 561                 /* We have no local cache, wait directly for
 562                  * async refresh to complete.
 563                  */
 564                 DEBUG(10,("cups_cache_reload: sync read on fd %d\n",
 565                         *p_pipe_fd ));
 566
 567                 cups_async_callback(smbd_event_context(),
 568                                         NULL,
 569                                         EVENT_FD_READ,
 570                                         (void *)p_pipe_fd);
 571                 if (!local_pcap_copy) {
 572                         return false;
 573                 }
 574         } else {
 575                 /* Replace the system cache with our
 576                  * local copy. */
 577                 pcap_cache_replace(local_pcap_copy);
 578
 579                 DEBUG(10,("cups_cache_reload: async read on fd %d\n",
 580                         *p_pipe_fd ));
 581
 582                 /* Trigger an event when the pipe can be read. */
 583                 cache_fd_event = event_add_fd(smbd_event_context(),
 584                                         NULL, *p_pipe_fd,
 585                                         EVENT_FD_READ,
 586                                         cups_async_callback,
 587                                         (void *)p_pipe_fd);
 588                 if (!cache_fd_event) {
 589                         close(*p_pipe_fd);
 590                         TALLOC_FREE(p_pipe_fd);
 591                         return false;
 592                 }
 593         }
 594         return true;
 595 }
 596
 597 /*
 598  * 'cups_job_delete()' - Delete a job.
 599  */
 600
 601 static int cups_job_delete(const char *sharename, const char *lprm_command, struct printjob *pjob)
 602 {
 603         TALLOC_CTX *frame = talloc_stackframe();
 604         int             ret = 1;                /* Return value */
 605         http_t          *http = NULL;           /* HTTP connection to server */
 606         ipp_t           *request = NULL,        /* IPP Request */
 607                         *response = NULL;       /* IPP Response */
 608         cups_lang_t     *language = NULL;       /* Default language */
 609         char *user = NULL;
 610         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 611         size_t size;
 612
 613         DEBUG(5,("cups_job_delete(%s, %p (%d))\n", sharename, pjob, pjob->sysjob));
 614
 615        /*
 616         * Make sure we don't ask for passwords...
 617         */
 618
 619         cupsSetPasswordCB(cups_passwd_cb);
 620
 621        /*
 622         * Try to connect to the server...
 623         */
 624
 625         if ((http = cups_connect(frame)) == NULL) {
 626                 goto out;
 627         }
 628
 629        /*
 630         * Build an IPP_CANCEL_JOB request, which requires the following
 631         * attributes:
 632         *
 633         *    attributes-charset
 634         *    attributes-natural-language
 635         *    job-uri
 636         *    requesting-user-name
 637         */
 638
 639         request = ippNew();
 640
 641         request->request.op.operation_id = IPP_CANCEL_JOB;
 642         request->request.op.request_id   = 1;
 643
 644         language = cupsLangDefault();
 645
 646         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 647                      "attributes-charset", NULL, "utf-8");
 648
 649         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 650                      "attributes-natural-language", NULL, language->language);
 651
 652         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 653
 654         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 655
 656         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 657                 goto out;
 658         }
 659
 660         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 661                      NULL, user);
 662
 663        /*
 664         * Do the request and get back a response...
 665         */
 666
 667         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
 668                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
 669                         DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 670                                 ippErrorString(cupsLastError())));
 671                 } else {
 672                         ret = 0;
 673                 }
 674         } else {
 675                 DEBUG(0,("Unable to cancel job %d - %s\n", pjob->sysjob,
 676                         ippErrorString(cupsLastError())));
 677         }
 678
 679  out:
 680         if (response)
 681                 ippDelete(response);
 682
 683         if (language)
 684                 cupsLangFree(language);
 685
 686         if (http)
 687                 httpClose(http);
 688
 689         TALLOC_FREE(frame);
 690         return ret;
 691 }
 692
 693
 694 /*
 695  * 'cups_job_pause()' - Pause a job.
 696  */
 697
 698 static int cups_job_pause(int snum, struct printjob *pjob)
 699 {
 700         TALLOC_CTX *frame = talloc_stackframe();
 701         int             ret = 1;                /* Return value */
 702         http_t          *http = NULL;           /* HTTP connection to server */
 703         ipp_t           *request = NULL,        /* IPP Request */
 704                         *response = NULL;       /* IPP Response */
 705         cups_lang_t     *language = NULL;       /* Default language */
 706         char *user = NULL;
 707         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 708         size_t size;
 709
 710         DEBUG(5,("cups_job_pause(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 711
 712        /*
 713         * Make sure we don't ask for passwords...
 714         */
 715
 716         cupsSetPasswordCB(cups_passwd_cb);
 717
 718        /*
 719         * Try to connect to the server...
 720         */
 721
 722         if ((http = cups_connect(frame)) == NULL) {
 723                 goto out;
 724         }
 725
 726        /*
 727         * Build an IPP_HOLD_JOB request, which requires the following
 728         * attributes:
 729         *
 730         *    attributes-charset
 731         *    attributes-natural-language
 732         *    job-uri
 733         *    requesting-user-name
 734         */
 735
 736         request = ippNew();
 737
 738         request->request.op.operation_id = IPP_HOLD_JOB;
 739         request->request.op.request_id   = 1;
 740
 741         language = cupsLangDefault();
 742
 743         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 744                      "attributes-charset", NULL, "utf-8");
 745
 746         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 747                      "attributes-natural-language", NULL, language->language);
 748
 749         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 750
 751         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 752
 753         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 754                 goto out;
 755         }
 756         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 757                      NULL, user);
 758
 759        /*
 760         * Do the request and get back a response...
 761         */
 762
 763         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
 764                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
 765                         DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 766                                 ippErrorString(cupsLastError())));
 767                 } else {
 768                         ret = 0;
 769                 }
 770         } else {
 771                 DEBUG(0,("Unable to hold job %d - %s\n", pjob->sysjob,
 772                         ippErrorString(cupsLastError())));
 773         }
 774
 775  out:
 776         if (response)
 777                 ippDelete(response);
 778
 779         if (language)
 780                 cupsLangFree(language);
 781
 782         if (http)
 783                 httpClose(http);
 784
 785         TALLOC_FREE(frame);
 786         return ret;
 787 }
 788
 789
 790 /*
 791  * 'cups_job_resume()' - Resume a paused job.
 792  */
 793
 794 static int cups_job_resume(int snum, struct printjob *pjob)
 795 {
 796         TALLOC_CTX *frame = talloc_stackframe();
 797         int             ret = 1;                /* Return value */
 798         http_t          *http = NULL;           /* HTTP connection to server */
 799         ipp_t           *request = NULL,        /* IPP Request */
 800                         *response = NULL;       /* IPP Response */
 801         cups_lang_t     *language = NULL;       /* Default language */
 802         char *user = NULL;
 803         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 804         size_t size;
 805
 806         DEBUG(5,("cups_job_resume(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 807
 808        /*
 809         * Make sure we don't ask for passwords...
 810         */
 811
 812         cupsSetPasswordCB(cups_passwd_cb);
 813
 814        /*
 815         * Try to connect to the server...
 816         */
 817
 818         if ((http = cups_connect(frame)) == NULL) {
 819                 goto out;
 820         }
 821
 822        /*
 823         * Build an IPP_RELEASE_JOB request, which requires the following
 824         * attributes:
 825         *
 826         *    attributes-charset
 827         *    attributes-natural-language
 828         *    job-uri
 829         *    requesting-user-name
 830         */
 831
 832         request = ippNew();
 833
 834         request->request.op.operation_id = IPP_RELEASE_JOB;
 835         request->request.op.request_id   = 1;
 836
 837         language = cupsLangDefault();
 838
 839         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 840                      "attributes-charset", NULL, "utf-8");
 841
 842         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 843                      "attributes-natural-language", NULL, language->language);
 844
 845         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/jobs/%d", pjob->sysjob);
 846
 847         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "job-uri", NULL, uri);
 848
 849         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 850                 goto out;
 851         }
 852         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 853                      NULL, user);
 854
 855        /*
 856         * Do the request and get back a response...
 857         */
 858
 859         if ((response = cupsDoRequest(http, request, "/jobs")) != NULL) {
 860                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
 861                         DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 862                                 ippErrorString(cupsLastError())));
 863                 } else {
 864                         ret = 0;
 865                 }
 866         } else {
 867                 DEBUG(0,("Unable to release job %d - %s\n", pjob->sysjob,
 868                         ippErrorString(cupsLastError())));
 869         }
 870
 871  out:
 872         if (response)
 873                 ippDelete(response);
 874
 875         if (language)
 876                 cupsLangFree(language);
 877
 878         if (http)
 879                 httpClose(http);
 880
 881         TALLOC_FREE(frame);
 882         return ret;
 883 }
 884
 885
 886 /*
 887  * 'cups_job_submit()' - Submit a job for printing.
 888  */
 889
 890 static int cups_job_submit(int snum, struct printjob *pjob)
 891 {
 892         TALLOC_CTX *frame = talloc_stackframe();
 893         int             ret = 1;                /* Return value */
 894         http_t          *http = NULL;           /* HTTP connection to server */
 895         ipp_t           *request = NULL,        /* IPP Request */
 896                         *response = NULL;       /* IPP Response */
 897         cups_lang_t     *language = NULL;       /* Default language */
 898         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
 899         const char      *clientname = NULL;     /* hostname of client for job-originating-host attribute */
 900         char *new_jobname = NULL;
 901         int             num_options = 0;
 902         cups_option_t   *options = NULL;
 903         char *printername = NULL;
 904         char *user = NULL;
 905         char *jobname = NULL;
 906         char *cupsoptions = NULL;
 907         char *filename = NULL;
 908         size_t size;
 909         char addr[INET6_ADDRSTRLEN];
 910
 911         DEBUG(5,("cups_job_submit(%d, %p (%d))\n", snum, pjob, pjob->sysjob));
 912
 913        /*
 914         * Make sure we don't ask for passwords...
 915         */
 916
 917         cupsSetPasswordCB(cups_passwd_cb);
 918
 919        /*
 920         * Try to connect to the server...
 921         */
 922
 923         if ((http = cups_connect(frame)) == NULL) {
 924                 goto out;
 925         }
 926
 927        /*
 928         * Build an IPP_PRINT_JOB request, which requires the following
 929         * attributes:
 930         *
 931         *    attributes-charset
 932         *    attributes-natural-language
 933         *    printer-uri
 934         *    requesting-user-name
 935         *    [document-data]
 936         */
 937
 938         request = ippNew();
 939
 940         request->request.op.operation_id = IPP_PRINT_JOB;
 941         request->request.op.request_id   = 1;
 942
 943         language = cupsLangDefault();
 944
 945         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
 946                      "attributes-charset", NULL, "utf-8");
 947
 948         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
 949                      "attributes-natural-language", NULL, language->language);
 950
 951         if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
 952                 goto out;
 953         }
 954         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
 955                  printername);
 956
 957         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
 958                      "printer-uri", NULL, uri);
 959
 960         if (!push_utf8_talloc(frame, &user, pjob->user, &size)) {
 961                 goto out;
 962         }
 963         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
 964                      NULL, user);
 965
 966         clientname = client_name(get_client_fd());
 967         if (strcmp(clientname, "UNKNOWN") == 0) {
 968                 clientname = client_addr(get_client_fd(),addr,sizeof(addr));
 969         }
 970
 971         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
 972                      "job-originating-host-name", NULL,
 973                       clientname);
 974
 975         if (!push_utf8_talloc(frame, &jobname, pjob->jobname, &size)) {
 976                 goto out;
 977         }
 978         new_jobname = talloc_asprintf(frame,
 979                         "%s%.8u %s", PRINT_SPOOL_PREFIX,
 980                         (unsigned int)pjob->smbjob,
 981                         jobname);
 982         if (new_jobname == NULL) {
 983                 goto out;
 984         }
 985
 986         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "job-name", NULL,
 987                      new_jobname);
 988
 989         /*
 990          * add any options defined in smb.conf
 991          */
 992
 993         if (!push_utf8_talloc(frame, &cupsoptions, lp_cups_options(snum), &size)) {
 994                 goto out;
 995         }
 996         num_options = 0;
 997         options     = NULL;
 998         num_options = cupsParseOptions(cupsoptions, num_options, &options);
 999
1000         if ( num_options )
1001                 cupsEncodeOptions(request, num_options, options);
1002
1003        /*
1004         * Do the request and get back a response...
1005         */
1006
1007         slprintf(uri, sizeof(uri) - 1, "/printers/%s", printername);
1008
1009         if (!push_utf8_talloc(frame, &filename, pjob->filename, &size)) {
1010                 goto out;
1011         }
1012         if ((response = cupsDoFileRequest(http, request, uri, pjob->filename)) != NULL) {
1013                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1014                         DEBUG(0,("Unable to print file to %s - %s\n", PRINTERNAME(snum),
1015                                  ippErrorString(cupsLastError())));
1016                 } else {
1017                         ret = 0;
1018                 }
1019         } else {
1020                 DEBUG(0,("Unable to print file to `%s' - %s\n", PRINTERNAME(snum),
1021                          ippErrorString(cupsLastError())));
1022         }
1023
1024         if ( ret == 0 )
1025                 unlink(pjob->filename);
1026         /* else print_job_end will do it for us */
1027
1028  out:
1029         if (response)
1030                 ippDelete(response);
1031
1032         if (language)
1033                 cupsLangFree(language);
1034
1035         if (http)
1036                 httpClose(http);
1037
1038         TALLOC_FREE(frame);
1039
1040         return ret;
1041 }
1042
1043 /*
1044  * 'cups_queue_get()' - Get all the jobs in the print queue.
1045  */
1046
1047 static int cups_queue_get(const char *sharename,
1048                enum printing_types printing_type,
1049                char *lpq_command,
1050                print_queue_struct **q,
1051                print_status_struct *status)
1052 {
1053         TALLOC_CTX *frame = talloc_stackframe();
1054         char *printername = NULL;
1055         http_t          *http = NULL;           /* HTTP connection to server */
1056         ipp_t           *request = NULL,        /* IPP Request */
1057                         *response = NULL;       /* IPP Response */
1058         ipp_attribute_t *attr = NULL;           /* Current attribute */
1059         cups_lang_t     *language = NULL;       /* Default language */
1060         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1061         int             qcount = 0,             /* Number of active queue entries */
1062                         qalloc = 0;             /* Number of queue entries allocated */
1063         print_queue_struct *queue = NULL,       /* Queue entries */
1064                         *temp;          /* Temporary pointer for queue */
1065         char            *user_name = NULL,      /* job-originating-user-name attribute */
1066                         *job_name = NULL;       /* job-name attribute */
1067         int             job_id;         /* job-id attribute */
1068         int             job_k_octets;   /* job-k-octets attribute */
1069         time_t          job_time;       /* time-at-creation attribute */
1070         ipp_jstate_t    job_status;     /* job-status attribute */
1071         int             job_priority;   /* job-priority attribute */
1072         size_t size;
1073         static const char *jattrs[] =   /* Requested job attributes */
1074                         {
1075                           "job-id",
1076                           "job-k-octets",
1077                           "job-name",
1078                           "job-originating-user-name",
1079                           "job-priority",
1080                           "job-state",
1081                           "time-at-creation",
1082                         };
1083         static const char *pattrs[] =   /* Requested printer attributes */
1084                         {
1085                           "printer-state",
1086                           "printer-state-message"
1087                         };
1088
1089         *q = NULL;
1090
1091         /* HACK ALERT!!!  The problem with support the 'printer name'
1092            option is that we key the tdb off the sharename.  So we will
1093            overload the lpq_command string to pass in the printername
1094            (which is basically what we do for non-cups printers ... using
1095            the lpq_command to get the queue listing). */
1096
1097         if (!push_utf8_talloc(frame, &printername, lpq_command, &size)) {
1098                 goto out;
1099         }
1100         DEBUG(5,("cups_queue_get(%s, %p, %p)\n", lpq_command, q, status));
1101
1102        /*
1103         * Make sure we don't ask for passwords...
1104         */
1105
1106         cupsSetPasswordCB(cups_passwd_cb);
1107
1108        /*
1109         * Try to connect to the server...
1110         */
1111
1112         if ((http = cups_connect(frame)) == NULL) {
1113                 goto out;
1114         }
1115
1116        /*
1117         * Generate the printer URI...
1118         */
1119
1120         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s", printername);
1121
1122        /*
1123         * Build an IPP_GET_JOBS request, which requires the following
1124         * attributes:
1125         *
1126         *    attributes-charset
1127         *    attributes-natural-language
1128         *    requested-attributes
1129         *    printer-uri
1130         */
1131
1132         request = ippNew();
1133
1134         request->request.op.operation_id = IPP_GET_JOBS;
1135         request->request.op.request_id   = 1;
1136
1137         language = cupsLangDefault();
1138
1139         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1140                      "attributes-charset", NULL, "utf-8");
1141
1142         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1143                      "attributes-natural-language", NULL, language->language);
1144
1145         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1146                       "requested-attributes",
1147                       (sizeof(jattrs) / sizeof(jattrs[0])),
1148                       NULL, jattrs);
1149
1150         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1151                      "printer-uri", NULL, uri);
1152
1153        /*
1154         * Do the request and get back a response...
1155         */
1156
1157         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1158                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1159                          ippErrorString(cupsLastError())));
1160                 goto out;
1161         }
1162
1163         if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1164                 DEBUG(0,("Unable to get jobs for %s - %s\n", uri,
1165                          ippErrorString(response->request.status.status_code)));
1166                 goto out;
1167         }
1168
1169        /*
1170         * Process the jobs...
1171         */
1172
1173         qcount = 0;
1174         qalloc = 0;
1175         queue  = NULL;
1176
1177         for (attr = response->attrs; attr != NULL; attr = attr->next) {
1178                /*
1179                 * Skip leading attributes until we hit a job...
1180                 */
1181
1182                 while (attr != NULL && attr->group_tag != IPP_TAG_JOB)
1183                         attr = attr->next;
1184
1185                 if (attr == NULL)
1186                         break;
1187
1188                /*
1189                 * Allocate memory as needed...
1190                 */
1191                 if (qcount >= qalloc) {
1192                         qalloc += 16;
1193
1194                         queue = SMB_REALLOC_ARRAY(queue, print_queue_struct, qalloc);
1195
1196                         if (queue == NULL) {
1197                                 DEBUG(0,("cups_queue_get: Not enough memory!"));
1198                                 qcount = 0;
1199                                 goto out;
1200                         }
1201                 }
1202
1203                 temp = queue + qcount;
1204                 memset(temp, 0, sizeof(print_queue_struct));
1205
1206                /*
1207                 * Pull the needed attributes from this job...
1208                 */
1209
1210                 job_id       = 0;
1211                 job_priority = 50;
1212                 job_status   = IPP_JOB_PENDING;
1213                 job_time     = 0;
1214                 job_k_octets = 0;
1215                 user_name    = NULL;
1216                 job_name     = NULL;
1217
1218                 while (attr != NULL && attr->group_tag == IPP_TAG_JOB) {
1219                         if (attr->name == NULL) {
1220                                 attr = attr->next;
1221                                 break;
1222                         }
1223
1224                         if (strcmp(attr->name, "job-id") == 0 &&
1225                             attr->value_tag == IPP_TAG_INTEGER)
1226                                 job_id = attr->values[0].integer;
1227
1228                         if (strcmp(attr->name, "job-k-octets") == 0 &&
1229                             attr->value_tag == IPP_TAG_INTEGER)
1230                                 job_k_octets = attr->values[0].integer;
1231
1232                         if (strcmp(attr->name, "job-priority") == 0 &&
1233                             attr->value_tag == IPP_TAG_INTEGER)
1234                                 job_priority = attr->values[0].integer;
1235
1236                         if (strcmp(attr->name, "job-state") == 0 &&
1237                             attr->value_tag == IPP_TAG_ENUM)
1238                                 job_status = (ipp_jstate_t)(attr->values[0].integer);
1239
1240                         if (strcmp(attr->name, "time-at-creation") == 0 &&
1241                             attr->value_tag == IPP_TAG_INTEGER)
1242                                 job_time = attr->values[0].integer;
1243
1244                         if (strcmp(attr->name, "job-name") == 0 &&
1245                             attr->value_tag == IPP_TAG_NAME) {
1246                                 if (!pull_utf8_talloc(frame,
1247                                                 &job_name,
1248                                                 attr->values[0].string.text,
1249                                                 &size)) {
1250                                         goto out;
1251                                 }
1252                         }
1253
1254                         if (strcmp(attr->name, "job-originating-user-name") == 0 &&
1255                             attr->value_tag == IPP_TAG_NAME) {
1256                                 if (!pull_utf8_talloc(frame,
1257                                                 &user_name,
1258                                                 attr->values[0].string.text,
1259                                                 &size)) {
1260                                         goto out;
1261                                 }
1262                         }
1263
1264                         attr = attr->next;
1265                 }
1266
1267                /*
1268                 * See if we have everything needed...
1269                 */
1270
1271                 if (user_name == NULL || job_name == NULL || job_id == 0) {
1272                         if (attr == NULL)
1273                                 break;
1274                         else
1275                                 continue;
1276                 }
1277
1278                 temp->job      = job_id;
1279                 temp->size     = job_k_octets * 1024;
1280                 temp->status   = job_status == IPP_JOB_PENDING ? LPQ_QUEUED :
1281                                  job_status == IPP_JOB_STOPPED ? LPQ_PAUSED :
1282                                  job_status == IPP_JOB_HELD ? LPQ_PAUSED :
1283                                  LPQ_PRINTING;
1284                 temp->priority = job_priority;
1285                 temp->time     = job_time;
1286                 strlcpy(temp->fs_user, user_name, sizeof(temp->fs_user));
1287                 strlcpy(temp->fs_file, job_name, sizeof(temp->fs_file));
1288
1289                 qcount ++;
1290
1291                 if (attr == NULL)
1292                         break;
1293         }
1294
1295         ippDelete(response);
1296         response = NULL;
1297
1298        /*
1299         * Build an IPP_GET_PRINTER_ATTRIBUTES request, which requires the
1300         * following attributes:
1301         *
1302         *    attributes-charset
1303         *    attributes-natural-language
1304         *    requested-attributes
1305         *    printer-uri
1306         */
1307
1308         request = ippNew();
1309
1310         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1311         request->request.op.request_id   = 1;
1312
1313         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1314                      "attributes-charset", NULL, "utf-8");
1315
1316         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1317                      "attributes-natural-language", NULL, language->language);
1318
1319         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1320                       "requested-attributes",
1321                       (sizeof(pattrs) / sizeof(pattrs[0])),
1322                       NULL, pattrs);
1323
1324         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1325                      "printer-uri", NULL, uri);
1326
1327        /*
1328         * Do the request and get back a response...
1329         */
1330
1331         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1332                 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1333                          ippErrorString(cupsLastError())));
1334                 *q = queue;
1335                 goto out;
1336         }
1337
1338         if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1339                 DEBUG(0,("Unable to get printer status for %s - %s\n", printername,
1340                          ippErrorString(response->request.status.status_code)));
1341                 *q = queue;
1342                 goto out;
1343         }
1344
1345        /*
1346         * Get the current printer status and convert it to the SAMBA values.
1347         */
1348
1349         if ((attr = ippFindAttribute(response, "printer-state", IPP_TAG_ENUM)) != NULL) {
1350                 if (attr->values[0].integer == IPP_PRINTER_STOPPED)
1351                         status->status = LPSTAT_STOPPED;
1352                 else
1353                         status->status = LPSTAT_OK;
1354         }
1355
1356         if ((attr = ippFindAttribute(response, "printer-state-message",
1357                                      IPP_TAG_TEXT)) != NULL) {
1358                 char *msg = NULL;
1359                 if (!pull_utf8_talloc(frame, &msg,
1360                                 attr->values[0].string.text,
1361                                 &size)) {
1362                         goto out;
1363                 }
1364                 fstrcpy(status->message, msg);
1365         }
1366
1367        /*
1368         * Return the job queue...
1369         */
1370
1371         *q = queue;
1372
1373  out:
1374         if (response)
1375                 ippDelete(response);
1376
1377         if (language)
1378                 cupsLangFree(language);
1379
1380         if (http)
1381                 httpClose(http);
1382
1383         TALLOC_FREE(frame);
1384         return qcount;
1385 }
1386
1387
1388 /*
1389  * 'cups_queue_pause()' - Pause a print queue.
1390  */
1391
1392 static int cups_queue_pause(int snum)
1393 {
1394         TALLOC_CTX *frame = talloc_stackframe();
1395         int             ret = 1;                /* Return value */
1396         http_t          *http = NULL;           /* HTTP connection to server */
1397         ipp_t           *request = NULL,        /* IPP Request */
1398                         *response = NULL;       /* IPP Response */
1399         cups_lang_t     *language = NULL;       /* Default language */
1400         char *printername = NULL;
1401         char *username = NULL;
1402         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1403         size_t size;
1404
1405         DEBUG(5,("cups_queue_pause(%d)\n", snum));
1406
1407         /*
1408          * Make sure we don't ask for passwords...
1409          */
1410
1411         cupsSetPasswordCB(cups_passwd_cb);
1412
1413         /*
1414          * Try to connect to the server...
1415          */
1416
1417         if ((http = cups_connect(frame)) == NULL) {
1418                 goto out;
1419         }
1420
1421         /*
1422          * Build an IPP_PAUSE_PRINTER request, which requires the following
1423          * attributes:
1424          *
1425          *    attributes-charset
1426          *    attributes-natural-language
1427          *    printer-uri
1428          *    requesting-user-name
1429          */
1430
1431         request = ippNew();
1432
1433         request->request.op.operation_id = IPP_PAUSE_PRINTER;
1434         request->request.op.request_id   = 1;
1435
1436         language = cupsLangDefault();
1437
1438         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1439                      "attributes-charset", NULL, "utf-8");
1440
1441         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1442                      "attributes-natural-language", NULL, language->language);
1443
1444         if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1445                 goto out;
1446         }
1447         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1448                  printername);
1449
1450         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1451
1452         if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1453                 goto out;
1454         }
1455         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1456                      NULL, username);
1457
1458        /*
1459         * Do the request and get back a response...
1460         */
1461
1462         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1463                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1464                         DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1465                                 ippErrorString(cupsLastError())));
1466                 } else {
1467                         ret = 0;
1468                 }
1469         } else {
1470                 DEBUG(0,("Unable to pause printer %s - %s\n", PRINTERNAME(snum),
1471                         ippErrorString(cupsLastError())));
1472         }
1473
1474  out:
1475         if (response)
1476                 ippDelete(response);
1477
1478         if (language)
1479                 cupsLangFree(language);
1480
1481         if (http)
1482                 httpClose(http);
1483
1484         TALLOC_FREE(frame);
1485         return ret;
1486 }
1487
1488
1489 /*
1490  * 'cups_queue_resume()' - Restart a print queue.
1491  */
1492
1493 static int cups_queue_resume(int snum)
1494 {
1495         TALLOC_CTX *frame = talloc_stackframe();
1496         int             ret = 1;                /* Return value */
1497         http_t          *http = NULL;           /* HTTP connection to server */
1498         ipp_t           *request = NULL,        /* IPP Request */
1499                         *response = NULL;       /* IPP Response */
1500         cups_lang_t     *language = NULL;       /* Default language */
1501         char *printername = NULL;
1502         char *username = NULL;
1503         char            uri[HTTP_MAX_URI]; /* printer-uri attribute */
1504         size_t size;
1505
1506         DEBUG(5,("cups_queue_resume(%d)\n", snum));
1507
1508        /*
1509         * Make sure we don't ask for passwords...
1510         */
1511
1512         cupsSetPasswordCB(cups_passwd_cb);
1513
1514        /*
1515         * Try to connect to the server...
1516         */
1517
1518         if ((http = cups_connect(frame)) == NULL) {
1519                 goto out;
1520         }
1521
1522        /*
1523         * Build an IPP_RESUME_PRINTER request, which requires the following
1524         * attributes:
1525         *
1526         *    attributes-charset
1527         *    attributes-natural-language
1528         *    printer-uri
1529         *    requesting-user-name
1530         */
1531
1532         request = ippNew();
1533
1534         request->request.op.operation_id = IPP_RESUME_PRINTER;
1535         request->request.op.request_id   = 1;
1536
1537         language = cupsLangDefault();
1538
1539         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1540                      "attributes-charset", NULL, "utf-8");
1541
1542         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1543                      "attributes-natural-language", NULL, language->language);
1544
1545         if (!push_utf8_talloc(frame, &printername, PRINTERNAME(snum), &size)) {
1546                 goto out;
1547         }
1548         slprintf(uri, sizeof(uri) - 1, "ipp://localhost/printers/%s",
1549                  printername);
1550
1551         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI, "printer-uri", NULL, uri);
1552
1553         if (!push_utf8_talloc(frame, &username, current_user_info.unix_name, &size)) {
1554                 goto out;
1555         }
1556         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_NAME, "requesting-user-name",
1557                      NULL, username);
1558
1559        /*
1560         * Do the request and get back a response...
1561         */
1562
1563         if ((response = cupsDoRequest(http, request, "/admin/")) != NULL) {
1564                 if (response->request.status.status_code >= IPP_OK_CONFLICT) {
1565                         DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1566                                 ippErrorString(cupsLastError())));
1567                 } else {
1568                         ret = 0;
1569                 }
1570         } else {
1571                 DEBUG(0,("Unable to resume printer %s - %s\n", PRINTERNAME(snum),
1572                         ippErrorString(cupsLastError())));
1573         }
1574
1575  out:
1576         if (response)
1577                 ippDelete(response);
1578
1579         if (language)
1580                 cupsLangFree(language);
1581
1582         if (http)
1583                 httpClose(http);
1584
1585         TALLOC_FREE(frame);
1586         return ret;
1587 }
1588
1589 /*******************************************************************
1590  * CUPS printing interface definitions...
1591  ******************************************************************/
1592
1593 struct printif  cups_printif =
1594 {
1595         PRINT_CUPS,
1596         cups_queue_get,
1597         cups_queue_pause,
1598         cups_queue_resume,
1599         cups_job_delete,
1600         cups_job_pause,
1601         cups_job_resume,
1602         cups_job_submit,
1603 };
1604
1605 bool cups_pull_comment_location(NT_PRINTER_INFO_LEVEL_2 *printer)
1606 {
1607         TALLOC_CTX *frame = talloc_stackframe();
1608         http_t          *http = NULL;           /* HTTP connection to server */
1609         ipp_t           *request = NULL,        /* IPP Request */
1610                         *response = NULL;       /* IPP Response */
1611         ipp_attribute_t *attr;          /* Current attribute */
1612         cups_lang_t     *language = NULL;       /* Default language */
1613         char            uri[HTTP_MAX_URI];
1614         char *server = NULL;
1615         char *sharename = NULL;
1616         char *name = NULL;
1617         static const char *requested[] =/* Requested attributes */
1618                         {
1619                           "printer-name",
1620                           "printer-info",
1621                           "printer-location"
1622                         };
1623         bool ret = False;
1624         size_t size;
1625
1626         DEBUG(5, ("pulling %s location\n", printer->sharename));
1627
1628         /*
1629          * Make sure we don't ask for passwords...
1630          */
1631
1632         cupsSetPasswordCB(cups_passwd_cb);
1633
1634         /*
1635          * Try to connect to the server...
1636          */
1637
1638         if ((http = cups_connect(frame)) == NULL) {
1639                 goto out;
1640         }
1641
1642         request = ippNew();
1643
1644         request->request.op.operation_id = IPP_GET_PRINTER_ATTRIBUTES;
1645         request->request.op.request_id   = 1;
1646
1647         language = cupsLangDefault();
1648
1649         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_CHARSET,
1650                      "attributes-charset", NULL, "utf-8");
1651
1652         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_LANGUAGE,
1653                      "attributes-natural-language", NULL, language->language);
1654
1655         if (lp_cups_server() != NULL && strlen(lp_cups_server()) > 0) {
1656                 if (!push_utf8_talloc(frame, &server, lp_cups_server(), &size)) {
1657                         goto out;
1658                 }
1659         } else {
1660                 server = talloc_strdup(frame,cupsServer());
1661         }
1662         if (server) {
1663                 goto out;
1664         }
1665         if (!push_utf8_talloc(frame, &sharename, printer->sharename, &size)) {
1666                 goto out;
1667         }
1668         slprintf(uri, sizeof(uri) - 1, "ipp://%s/printers/%s",
1669                  server, sharename);
1670
1671         ippAddString(request, IPP_TAG_OPERATION, IPP_TAG_URI,
1672                      "printer-uri", NULL, uri);
1673
1674         ippAddStrings(request, IPP_TAG_OPERATION, IPP_TAG_NAME,
1675                       "requested-attributes",
1676                       (sizeof(requested) / sizeof(requested[0])),
1677                       NULL, requested);
1678
1679         /*
1680          * Do the request and get back a response...
1681          */
1682
1683         if ((response = cupsDoRequest(http, request, "/")) == NULL) {
1684                 DEBUG(0,("Unable to get printer attributes - %s\n",
1685                          ippErrorString(cupsLastError())));
1686                 goto out;
1687         }
1688
1689         for (attr = response->attrs; attr != NULL;) {
1690                 /*
1691                  * Skip leading attributes until we hit a printer...
1692                  */
1693
1694                 while (attr != NULL && attr->group_tag != IPP_TAG_PRINTER)
1695                         attr = attr->next;
1696
1697                 if (attr == NULL)
1698                         break;
1699
1700                 /*
1701                  * Pull the needed attributes from this printer...
1702                  */
1703
1704                 while ( attr && (attr->group_tag == IPP_TAG_PRINTER) ) {
1705                         if (strcmp(attr->name, "printer-name") == 0 &&
1706                             attr->value_tag == IPP_TAG_NAME) {
1707                                 if (!pull_utf8_talloc(frame,
1708                                                 &name,
1709                                                 attr->values[0].string.text,
1710                                                 &size)) {
1711                                         goto out;
1712                                 }
1713                         }
1714
1715                         /* Grab the comment if we don't have one */
1716                         if ( (strcmp(attr->name, "printer-info") == 0)
1717                              && (attr->value_tag == IPP_TAG_TEXT)
1718                              && !strlen(printer->comment) )
1719                         {
1720                                 char *comment = NULL;
1721                                 if (!pull_utf8_talloc(frame,
1722                                                 &comment,
1723                                                 attr->values[0].string.text,
1724                                                 &size)) {
1725                                         goto out;
1726                                 }
1727                                 DEBUG(5,("cups_pull_comment_location: Using cups comment: %s\n",
1728                                          comment));
1729                                 strlcpy(printer->comment,
1730                                         comment,
1731                                         sizeof(printer->comment));
1732                         }
1733
1734                         /* Grab the location if we don't have one */
1735                         if ( (strcmp(attr->name, "printer-location") == 0)
1736                              && (attr->value_tag == IPP_TAG_TEXT)
1737                              && !strlen(printer->location) )
1738                         {
1739                                 char *location = NULL;
1740                                 if (!pull_utf8_talloc(frame,
1741                                                 &location,
1742                                                 attr->values[0].string.text,
1743                                                 &size)) {
1744                                         goto out;
1745                                 }
1746                                 DEBUG(5,("cups_pull_comment_location: Using cups location: %s\n",
1747                                          location));
1748                                 strlcpy(printer->location,
1749                                         location,
1750                                         sizeof(printer->location));
1751                         }
1752
1753                         attr = attr->next;
1754                 }
1755
1756                 /*
1757                  * We have everything needed...
1758                  */
1759
1760                 if (name != NULL)
1761                         break;
1762         }
1763
1764         ret = True;
1765
1766  out:
1767         if (response)
1768                 ippDelete(response);
1769
1770         if (language)
1771                 cupsLangFree(language);
1772
1773         if (http)
1774                 httpClose(http);
1775
1776         TALLOC_FREE(frame);
1777         return ret;
1778 }
1779
1780 #else
1781  /* this keeps fussy compilers happy */
1782  void print_cups_dummy(void);
1783  void print_cups_dummy(void) {}
1784 #endif /* HAVE_CUPS */