source3/printing/nt_printing_ads.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Copyright (C) Andrew Tridgell              1992-2000,
   5  *  Copyright (C) Jean François Micouleau      1998-2000.
   6  *  Copyright (C) Gerald Carter                2002-2005.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "../librpc/gen_ndr/spoolss.h"
  24 #include "rpc_server/spoolss/srv_spoolss_util.h"
  25 #include "nt_printing.h"
  26 #include "ads.h"
  27 #include "secrets.h"
  28 #include "krb5_env.h"
  29 #include "../libcli/registry/util_reg.h"
  30 #include "auth.h"
  31 #include "../librpc/ndr/libndr.h"
  32 #include "rpc_client/cli_winreg_spoolss.h"
  33
  34 #ifdef HAVE_ADS
  35 /*****************************************************************
  36  ****************************************************************/
  37
  38 static void store_printer_guid(struct messaging_context *msg_ctx,
  39                                const char *printer, struct GUID guid)
  40 {
  41         TALLOC_CTX *tmp_ctx;
  42         struct auth_session_info *session_info = NULL;
  43         const char *guid_str;
  44         DATA_BLOB blob;
  45         NTSTATUS status;
  46         WERROR result;
  47
  48         tmp_ctx = talloc_new(NULL);
  49         if (!tmp_ctx) {
  50                 DEBUG(0, ("store_printer_guid: Out of memory?!\n"));
  51                 return;
  52         }
  53
  54         status = make_session_info_system(tmp_ctx, &session_info);
  55         if (!NT_STATUS_IS_OK(status)) {
  56                 DEBUG(0, ("store_printer_guid: "
  57                           "Could not create system session_info\n"));
  58                 goto done;
  59         }
  60
  61         guid_str = GUID_string(tmp_ctx, &guid);
  62         if (!guid_str) {
  63                 DEBUG(0, ("store_printer_guid: Out of memory?!\n"));
  64                 goto done;
  65         }
  66
  67         /* We used to store this as a REG_BINARY but that causes
  68            Vista to whine */
  69
  70         if (!push_reg_sz(tmp_ctx, &blob, guid_str)) {
  71                 DEBUG(0, ("store_printer_guid: "
  72                           "Could not marshall string %s for objectGUID\n",
  73                           guid_str));
  74                 goto done;
  75         }
  76
  77         result = winreg_set_printer_dataex_internal(tmp_ctx, session_info, msg_ctx,
  78                                            printer,
  79                                            SPOOL_DSSPOOLER_KEY, "objectGUID",
  80                                            REG_SZ, blob.data, blob.length);
  81         if (!W_ERROR_IS_OK(result)) {
  82                 DEBUG(0, ("store_printer_guid: "
  83                           "Failed to store GUID for printer %s\n", printer));
  84         }
  85
  86 done:
  87         talloc_free(tmp_ctx);
  88 }
  89
  90 static WERROR nt_printer_info_to_mods(TALLOC_CTX *ctx,
  91                                       struct spoolss_PrinterInfo2 *info2,
  92                                       ADS_MODLIST *mods)
  93 {
  94         char *info_str;
  95
  96         ads_mod_str(ctx, mods, SPOOL_REG_PRINTERNAME, info2->sharename);
  97         ads_mod_str(ctx, mods, SPOOL_REG_SHORTSERVERNAME, lp_netbios_name());
  98         ads_mod_str(ctx, mods, SPOOL_REG_SERVERNAME, get_mydnsfullname());
  99
 100         info_str = talloc_asprintf(ctx, "\\\\%s\\%s",
 101                                    get_mydnsfullname(), info2->sharename);
 102         if (info_str == NULL) {
 103                 return WERR_NOMEM;
 104         }
 105         ads_mod_str(ctx, mods, SPOOL_REG_UNCNAME, info_str);
 106
 107         info_str = talloc_asprintf(ctx, "%d", 4);
 108         if (info_str == NULL) {
 109                 return WERR_NOMEM;
 110         }
 111         ads_mod_str(ctx, mods, SPOOL_REG_VERSIONNUMBER, info_str);
 112
 113         /* empty strings in the mods list result in an attrubute error */
 114         if (strlen(info2->drivername) != 0)
 115                 ads_mod_str(ctx, mods, SPOOL_REG_DRIVERNAME, info2->drivername);
 116         if (strlen(info2->location) != 0)
 117                 ads_mod_str(ctx, mods, SPOOL_REG_LOCATION, info2->location);
 118         if (strlen(info2->comment) != 0)
 119                 ads_mod_str(ctx, mods, SPOOL_REG_DESCRIPTION, info2->comment);
 120         if (strlen(info2->portname) != 0)
 121                 ads_mod_str(ctx, mods, SPOOL_REG_PORTNAME, info2->portname);
 122         if (strlen(info2->sepfile) != 0)
 123                 ads_mod_str(ctx, mods, SPOOL_REG_PRINTSEPARATORFILE, info2->sepfile);
 124
 125         info_str = talloc_asprintf(ctx, "%u", info2->starttime);
 126         if (info_str == NULL) {
 127                 return WERR_NOMEM;
 128         }
 129         ads_mod_str(ctx, mods, SPOOL_REG_PRINTSTARTTIME, info_str);
 130
 131         info_str = talloc_asprintf(ctx, "%u", info2->untiltime);
 132         if (info_str == NULL) {
 133                 return WERR_NOMEM;
 134         }
 135         ads_mod_str(ctx, mods, SPOOL_REG_PRINTENDTIME, info_str);
 136
 137         info_str = talloc_asprintf(ctx, "%u", info2->priority);
 138         if (info_str == NULL) {
 139                 return WERR_NOMEM;
 140         }
 141         ads_mod_str(ctx, mods, SPOOL_REG_PRIORITY, info_str);
 142
 143         if (info2->attributes & PRINTER_ATTRIBUTE_KEEPPRINTEDJOBS) {
 144                 ads_mod_str(ctx, mods, SPOOL_REG_PRINTKEEPPRINTEDJOBS, "TRUE");
 145         } else {
 146                 ads_mod_str(ctx, mods, SPOOL_REG_PRINTKEEPPRINTEDJOBS, "FALSE");
 147         }
 148
 149         switch (info2->attributes & 0x3) {
 150         case 0:
 151                 ads_mod_str(ctx, mods, SPOOL_REG_PRINTSPOOLING,
 152                             SPOOL_REGVAL_PRINTWHILESPOOLING);
 153                 break;
 154         case 1:
 155                 ads_mod_str(ctx, mods, SPOOL_REG_PRINTSPOOLING,
 156                             SPOOL_REGVAL_PRINTAFTERSPOOLED);
 157                 break;
 158         case 2:
 159                 ads_mod_str(ctx, mods, SPOOL_REG_PRINTSPOOLING,
 160                             SPOOL_REGVAL_PRINTDIRECT);
 161                 break;
 162         default:
 163                 DEBUG(3, ("unsupported printer attributes %x\n",
 164                           info2->attributes));
 165         }
 166
 167         return WERR_OK;
 168 }
 169
 170 static WERROR nt_printer_publish_ads(struct messaging_context *msg_ctx,
 171                                      ADS_STRUCT *ads,
 172                                      struct spoolss_PrinterInfo2 *pinfo2)
 173 {
 174         ADS_STATUS ads_rc;
 175         LDAPMessage *res;
 176         char *prt_dn = NULL, *srv_dn, *srv_cn_0, *srv_cn_escaped, *sharename_escaped;
 177         char *srv_dn_utf8, **srv_cn_utf8;
 178         TALLOC_CTX *ctx;
 179         ADS_MODLIST mods;
 180         const char *attrs[] = {"objectGUID", NULL};
 181         struct GUID guid;
 182         WERROR win_rc = WERR_OK;
 183         size_t converted_size;
 184         const char *printer = pinfo2->sharename;
 185
 186         /* build the ads mods */
 187         ctx = talloc_init("nt_printer_publish_ads");
 188         if (ctx == NULL) {
 189                 return WERR_NOMEM;
 190         }
 191
 192         DEBUG(5, ("publishing printer %s\n", printer));
 193
 194         /* figure out where to publish */
 195         ads_find_machine_acct(ads, &res, lp_netbios_name());
 196
 197         /* We use ldap_get_dn here as we need the answer
 198          * in utf8 to call ldap_explode_dn(). JRA. */
 199
 200         srv_dn_utf8 = ldap_get_dn((LDAP *)ads->ldap.ld, (LDAPMessage *)res);
 201         if (!srv_dn_utf8) {
 202                 TALLOC_FREE(ctx);
 203                 return WERR_SERVER_UNAVAILABLE;
 204         }
 205         ads_msgfree(ads, res);
 206         srv_cn_utf8 = ldap_explode_dn(srv_dn_utf8, 1);
 207         if (!srv_cn_utf8) {
 208                 TALLOC_FREE(ctx);
 209                 ldap_memfree(srv_dn_utf8);
 210                 return WERR_SERVER_UNAVAILABLE;
 211         }
 212         /* Now convert to CH_UNIX. */
 213         if (!pull_utf8_talloc(ctx, &srv_dn, srv_dn_utf8, &converted_size)) {
 214                 TALLOC_FREE(ctx);
 215                 ldap_memfree(srv_dn_utf8);
 216                 ldap_memfree(srv_cn_utf8);
 217                 return WERR_SERVER_UNAVAILABLE;
 218         }
 219         if (!pull_utf8_talloc(ctx, &srv_cn_0, srv_cn_utf8[0], &converted_size)) {
 220                 TALLOC_FREE(ctx);
 221                 ldap_memfree(srv_dn_utf8);
 222                 ldap_memfree(srv_cn_utf8);
 223                 TALLOC_FREE(srv_dn);
 224                 return WERR_SERVER_UNAVAILABLE;
 225         }
 226
 227         ldap_memfree(srv_dn_utf8);
 228         ldap_memfree(srv_cn_utf8);
 229
 230         srv_cn_escaped = escape_rdn_val_string_alloc(srv_cn_0);
 231         if (!srv_cn_escaped) {
 232                 TALLOC_FREE(ctx);
 233                 return WERR_SERVER_UNAVAILABLE;
 234         }
 235         sharename_escaped = escape_rdn_val_string_alloc(printer);
 236         if (!sharename_escaped) {
 237                 SAFE_FREE(srv_cn_escaped);
 238                 TALLOC_FREE(ctx);
 239                 return WERR_SERVER_UNAVAILABLE;
 240         }
 241
 242         prt_dn = talloc_asprintf(ctx, "cn=%s-%s,%s", srv_cn_escaped, sharename_escaped, srv_dn);
 243
 244         SAFE_FREE(srv_cn_escaped);
 245         SAFE_FREE(sharename_escaped);
 246
 247         mods = ads_init_mods(ctx);
 248
 249         if (mods == NULL) {
 250                 TALLOC_FREE(ctx);
 251                 return WERR_NOMEM;
 252         }
 253
 254         win_rc = nt_printer_info_to_mods(ctx, pinfo2, &mods);
 255         if (!W_ERROR_IS_OK(win_rc)) {
 256                 TALLOC_FREE(ctx);
 257                 return win_rc;
 258         }
 259
 260         /* publish it */
 261         ads_rc = ads_mod_printer_entry(ads, prt_dn, ctx, &mods);
 262         if (ads_rc.err.rc == LDAP_NO_SUCH_OBJECT) {
 263                 int i;
 264                 for (i=0; mods[i] != 0; i++)
 265                         ;
 266                 mods[i] = (LDAPMod *)-1;
 267                 ads_rc = ads_add_printer_entry(ads, prt_dn, ctx, &mods);
 268         }
 269
 270         if (!ADS_ERR_OK(ads_rc)) {
 271                 DEBUG(3, ("error publishing %s: %s\n",
 272                           printer, ads_errstr(ads_rc)));
 273         }
 274
 275         /* retreive the guid and store it locally */
 276         if (ADS_ERR_OK(ads_search_dn(ads, &res, prt_dn, attrs))) {
 277                 bool guid_ok;
 278                 ZERO_STRUCT(guid);
 279                 guid_ok = ads_pull_guid(ads, res, &guid);
 280                 ads_msgfree(ads, res);
 281                 if (guid_ok) {
 282                         store_printer_guid(msg_ctx, printer, guid);
 283                 }
 284         }
 285         TALLOC_FREE(ctx);
 286
 287         return win_rc;
 288 }
 289
 290 static WERROR nt_printer_unpublish_ads(ADS_STRUCT *ads,
 291                                        const char *printer)
 292 {
 293         ADS_STATUS ads_rc;
 294         LDAPMessage *res = NULL;
 295         char *prt_dn = NULL;
 296
 297         DEBUG(5, ("unpublishing printer %s\n", printer));
 298
 299         /* remove the printer from the directory */
 300         ads_rc = ads_find_printer_on_server(ads, &res,
 301                                             printer, lp_netbios_name());
 302
 303         if (ADS_ERR_OK(ads_rc) && res && ads_count_replies(ads, res)) {
 304                 prt_dn = ads_get_dn(ads, talloc_tos(), res);
 305                 if (!prt_dn) {
 306                         ads_msgfree(ads, res);
 307                         return WERR_NOMEM;
 308                 }
 309                 ads_rc = ads_del_dn(ads, prt_dn);
 310                 TALLOC_FREE(prt_dn);
 311         }
 312
 313         if (res) {
 314                 ads_msgfree(ads, res);
 315         }
 316         return WERR_OK;
 317 }
 318
 319 /****************************************************************************
 320  * Publish a printer in the directory
 321  *
 322  * @param mem_ctx      memory context
 323  * @param session_info  session_info to access winreg pipe
 324  * @param pinfo2       printer information
 325  * @param action       publish/unpublish action
 326  * @return WERROR indicating status of publishing
 327  ***************************************************************************/
 328
 329 WERROR nt_printer_publish(TALLOC_CTX *mem_ctx,
 330                           const struct auth_session_info *session_info,
 331                           struct messaging_context *msg_ctx,
 332                           struct spoolss_PrinterInfo2 *pinfo2,
 333                           int action)
 334 {
 335         uint32_t info2_mask = SPOOLSS_PRINTER_INFO_ATTRIBUTES;
 336         struct spoolss_SetPrinterInfo2 *sinfo2;
 337         ADS_STATUS ads_rc;
 338         ADS_STRUCT *ads = NULL;
 339         WERROR win_rc;
 340
 341         sinfo2 = talloc_zero(mem_ctx, struct spoolss_SetPrinterInfo2);
 342         if (!sinfo2) {
 343                 return WERR_NOMEM;
 344         }
 345
 346         switch (action) {
 347         case DSPRINT_PUBLISH:
 348         case DSPRINT_UPDATE:
 349                 pinfo2->attributes |= PRINTER_ATTRIBUTE_PUBLISHED;
 350                 break;
 351         case DSPRINT_UNPUBLISH:
 352                 pinfo2->attributes ^= PRINTER_ATTRIBUTE_PUBLISHED;
 353                 break;
 354         default:
 355                 win_rc = WERR_NOT_SUPPORTED;
 356                 goto done;
 357         }
 358
 359         sinfo2->attributes = pinfo2->attributes;
 360
 361         win_rc = winreg_update_printer_internal(mem_ctx, session_info, msg_ctx,
 362                                         pinfo2->sharename, info2_mask,
 363                                         sinfo2, NULL, NULL);
 364         if (!W_ERROR_IS_OK(win_rc)) {
 365                 DEBUG(3, ("err %d saving data\n", W_ERROR_V(win_rc)));
 366                 goto done;
 367         }
 368
 369         TALLOC_FREE(sinfo2);
 370
 371         ads = ads_init(lp_realm(), lp_workgroup(), NULL);
 372         if (!ads) {
 373                 DEBUG(3, ("ads_init() failed\n"));
 374                 win_rc = WERR_SERVER_UNAVAILABLE;
 375                 goto done;
 376         }
 377         setenv(KRB5_ENV_CCNAME, "MEMORY:prtpub_cache", 1);
 378         SAFE_FREE(ads->auth.password);
 379         ads->auth.password = secrets_fetch_machine_password(lp_workgroup(),
 380                 NULL, NULL);
 381
 382         /* ads_connect() will find the DC for us */
 383         ads_rc = ads_connect(ads);
 384         if (!ADS_ERR_OK(ads_rc)) {
 385                 DEBUG(3, ("ads_connect failed: %s\n", ads_errstr(ads_rc)));
 386                 win_rc = WERR_ACCESS_DENIED;
 387                 goto done;
 388         }
 389
 390         switch (action) {
 391         case DSPRINT_PUBLISH:
 392         case DSPRINT_UPDATE:
 393                 win_rc = nt_printer_publish_ads(msg_ctx, ads, pinfo2);
 394                 break;
 395         case DSPRINT_UNPUBLISH:
 396                 win_rc = nt_printer_unpublish_ads(ads, pinfo2->sharename);
 397                 break;
 398         }
 399
 400 done:
 401         ads_destroy(&ads);
 402         return win_rc;
 403 }
 404
 405 WERROR check_published_printers(struct messaging_context *msg_ctx)
 406 {
 407         ADS_STATUS ads_rc;
 408         ADS_STRUCT *ads = NULL;
 409         int snum;
 410         int n_services = lp_numservices();
 411         TALLOC_CTX *tmp_ctx = NULL;
 412         struct auth_session_info *session_info = NULL;
 413         struct spoolss_PrinterInfo2 *pinfo2;
 414         NTSTATUS status;
 415         WERROR result;
 416
 417         tmp_ctx = talloc_new(NULL);
 418         if (!tmp_ctx) return WERR_NOMEM;
 419
 420         ads = ads_init(lp_realm(), lp_workgroup(), NULL);
 421         if (!ads) {
 422                 DEBUG(3, ("ads_init() failed\n"));
 423                 return WERR_SERVER_UNAVAILABLE;
 424         }
 425         setenv(KRB5_ENV_CCNAME, "MEMORY:prtpub_cache", 1);
 426         SAFE_FREE(ads->auth.password);
 427         ads->auth.password = secrets_fetch_machine_password(lp_workgroup(),
 428                 NULL, NULL);
 429
 430         /* ads_connect() will find the DC for us */
 431         ads_rc = ads_connect(ads);
 432         if (!ADS_ERR_OK(ads_rc)) {
 433                 DEBUG(3, ("ads_connect failed: %s\n", ads_errstr(ads_rc)));
 434                 result = WERR_ACCESS_DENIED;
 435                 goto done;
 436         }
 437
 438         status = make_session_info_system(tmp_ctx, &session_info);
 439         if (!NT_STATUS_IS_OK(status)) {
 440                 DEBUG(0, ("check_published_printers: "
 441                           "Could not create system session_info\n"));
 442                 result = WERR_ACCESS_DENIED;
 443                 goto done;
 444         }
 445
 446         for (snum = 0; snum < n_services; snum++) {
 447                 if (!lp_snum_ok(snum) || !lp_print_ok(snum)) {
 448                         continue;
 449                 }
 450
 451                 result = winreg_get_printer_internal(tmp_ctx, session_info, msg_ctx,
 452                                             lp_servicename(talloc_tos(), snum),
 453                                             &pinfo2);
 454                 if (!W_ERROR_IS_OK(result)) {
 455                         continue;
 456                 }
 457
 458                 if (pinfo2->attributes & PRINTER_ATTRIBUTE_PUBLISHED) {
 459                         nt_printer_publish_ads(msg_ctx, ads, pinfo2);
 460                 }
 461
 462                 TALLOC_FREE(pinfo2);
 463         }
 464
 465         result = WERR_OK;
 466 done:
 467         ads_destroy(&ads);
 468         ads_kdestroy("MEMORY:prtpub_cache");
 469         talloc_free(tmp_ctx);
 470         return result;
 471 }
 472
 473 bool is_printer_published(TALLOC_CTX *mem_ctx,
 474                           const struct auth_session_info *session_info,
 475                           struct messaging_context *msg_ctx,
 476                           const char *servername,
 477                           const char *printer,
 478                           struct GUID *guid,
 479                           struct spoolss_PrinterInfo2 **info2)
 480 {
 481         struct spoolss_PrinterInfo2 *pinfo2 = NULL;
 482         enum winreg_Type type;
 483         uint8_t *data;
 484         uint32_t data_size;
 485         WERROR result;
 486         NTSTATUS status;
 487         struct dcerpc_binding_handle *b;
 488
 489         result = winreg_printer_binding_handle(mem_ctx,
 490                                                session_info,
 491                                                msg_ctx,
 492                                                &b);
 493         if (!W_ERROR_IS_OK(result)) {
 494                 return false;
 495         }
 496
 497         result = winreg_get_printer(mem_ctx, b,
 498                                     printer, &pinfo2);
 499         if (!W_ERROR_IS_OK(result)) {
 500                 return false;
 501         }
 502
 503         if (!(pinfo2->attributes & PRINTER_ATTRIBUTE_PUBLISHED)) {
 504                 TALLOC_FREE(pinfo2);
 505                 return false;
 506         }
 507
 508         if (!guid) {
 509                 goto done;
 510         }
 511
 512         /* fetching printer guids really ought to be a separate function. */
 513
 514         result = winreg_get_printer_dataex(mem_ctx, b,
 515                                            printer,
 516                                            SPOOL_DSSPOOLER_KEY, "objectGUID",
 517                                            &type, &data, &data_size);
 518         if (!W_ERROR_IS_OK(result)) {
 519                 TALLOC_FREE(pinfo2);
 520                 return false;
 521         }
 522
 523         /* We used to store the guid as REG_BINARY, then swapped
 524            to REG_SZ for Vista compatibility so check for both */
 525
 526         switch (type) {
 527         case REG_SZ:
 528                 status = GUID_from_string((char *)data, guid);
 529                 if (!NT_STATUS_IS_OK(status)) {
 530                         TALLOC_FREE(pinfo2);
 531                         return false;
 532                 }
 533                 break;
 534
 535         case REG_BINARY:
 536                 if (data_size != sizeof(struct GUID)) {
 537                         TALLOC_FREE(pinfo2);
 538                         return false;
 539                 }
 540                 memcpy(guid, data, sizeof(struct GUID));
 541                 break;
 542         default:
 543                 DEBUG(0,("is_printer_published: GUID value stored as "
 544                          "invaluid type (%d)\n", type));
 545                 break;
 546         }
 547
 548 done:
 549         if (info2) {
 550                 *info2 = talloc_move(mem_ctx, &pinfo2);
 551         }
 552         talloc_free(pinfo2);
 553         return true;
 554 }
 555 #else
 556 WERROR nt_printer_publish(TALLOC_CTX *mem_ctx,
 557                           const struct auth_session_info *session_info,
 558                           struct messaging_context *msg_ctx,
 559                           struct spoolss_PrinterInfo2 *pinfo2,
 560                           int action)
 561 {
 562         return WERR_OK;
 563 }
 564
 565 WERROR check_published_printers(struct messaging_context *msg_ctx)
 566 {
 567         return WERR_OK;
 568 }
 569
 570 bool is_printer_published(TALLOC_CTX *mem_ctx,
 571                           const struct auth_session_info *session_info,
 572                           struct messaging_context *msg_ctx,
 573                           const char *servername,
 574                           const char *printer,
 575                           struct GUID *guid,
 576                           struct spoolss_PrinterInfo2 **info2)
 577 {
 578         return False;
 579 }
 580 #endif /* HAVE_ADS */