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/srv_spoolss_util.h"
  25 #include "nt_printing.h"
  26 #include "ads.h"
  27 #include "secrets.h"
  28
  29 #ifdef HAVE_ADS
  30 /*****************************************************************
  31  ****************************************************************/
  32
  33 static void store_printer_guid(struct messaging_context *msg_ctx,
  34                                const char *printer, struct GUID guid)
  35 {
  36         TALLOC_CTX *tmp_ctx;
  37         struct auth_serversupplied_info *server_info = NULL;
  38         const char *guid_str;
  39         DATA_BLOB blob;
  40         NTSTATUS status;
  41         WERROR result;
  42
  43         tmp_ctx = talloc_new(NULL);
  44         if (!tmp_ctx) {
  45                 DEBUG(0, ("store_printer_guid: Out of memory?!\n"));
  46                 return;
  47         }
  48
  49         status = make_server_info_system(tmp_ctx, &server_info);
  50         if (!NT_STATUS_IS_OK(status)) {
  51                 DEBUG(0, ("store_printer_guid: "
  52                           "Could not create system server_info\n"));
  53                 goto done;
  54         }
  55
  56         guid_str = GUID_string(tmp_ctx, &guid);
  57         if (!guid_str) {
  58                 DEBUG(0, ("store_printer_guid: Out of memory?!\n"));
  59                 goto done;
  60         }
  61
  62         /* We used to store this as a REG_BINARY but that causes
  63            Vista to whine */
  64
  65         if (!push_reg_sz(tmp_ctx, &blob, guid_str)) {
  66                 DEBUG(0, ("store_printer_guid: "
  67                           "Could not marshall string %s for objectGUID\n",
  68                           guid_str));
  69                 goto done;
  70         }
  71
  72         result = winreg_set_printer_dataex(tmp_ctx, server_info, msg_ctx,
  73                                            printer,
  74                                            SPOOL_DSSPOOLER_KEY, "objectGUID",
  75                                            REG_SZ, blob.data, blob.length);
  76         if (!W_ERROR_IS_OK(result)) {
  77                 DEBUG(0, ("store_printer_guid: "
  78                           "Failed to store GUID for printer %s\n", printer));
  79         }
  80
  81 done:
  82         talloc_free(tmp_ctx);
  83 }
  84
  85 static WERROR nt_printer_publish_ads(ADS_STRUCT *ads,
  86                                      struct spoolss_PrinterInfo2 *pinfo2)
  87 {
  88         ADS_STATUS ads_rc;
  89         LDAPMessage *res;
  90         char *prt_dn = NULL, *srv_dn, *srv_cn_0, *srv_cn_escaped, *sharename_escaped;
  91         char *srv_dn_utf8, **srv_cn_utf8;
  92         TALLOC_CTX *ctx;
  93         ADS_MODLIST mods;
  94         const char *attrs[] = {"objectGUID", NULL};
  95         struct GUID guid;
  96         WERROR win_rc = WERR_OK;
  97         size_t converted_size;
  98         const char *printer = pinfo2->sharename;
  99
 100         /* build the ads mods */
 101         ctx = talloc_init("nt_printer_publish_ads");
 102         if (ctx == NULL) {
 103                 return WERR_NOMEM;
 104         }
 105
 106         DEBUG(5, ("publishing printer %s\n", printer));
 107
 108         /* figure out where to publish */
 109         ads_find_machine_acct(ads, &res, global_myname());
 110
 111         /* We use ldap_get_dn here as we need the answer
 112          * in utf8 to call ldap_explode_dn(). JRA. */
 113
 114         srv_dn_utf8 = ldap_get_dn((LDAP *)ads->ldap.ld, (LDAPMessage *)res);
 115         if (!srv_dn_utf8) {
 116                 TALLOC_FREE(ctx);
 117                 return WERR_SERVER_UNAVAILABLE;
 118         }
 119         ads_msgfree(ads, res);
 120         srv_cn_utf8 = ldap_explode_dn(srv_dn_utf8, 1);
 121         if (!srv_cn_utf8) {
 122                 TALLOC_FREE(ctx);
 123                 ldap_memfree(srv_dn_utf8);
 124                 return WERR_SERVER_UNAVAILABLE;
 125         }
 126         /* Now convert to CH_UNIX. */
 127         if (!pull_utf8_talloc(ctx, &srv_dn, srv_dn_utf8, &converted_size)) {
 128                 TALLOC_FREE(ctx);
 129                 ldap_memfree(srv_dn_utf8);
 130                 ldap_memfree(srv_cn_utf8);
 131                 return WERR_SERVER_UNAVAILABLE;
 132         }
 133         if (!pull_utf8_talloc(ctx, &srv_cn_0, srv_cn_utf8[0], &converted_size)) {
 134                 TALLOC_FREE(ctx);
 135                 ldap_memfree(srv_dn_utf8);
 136                 ldap_memfree(srv_cn_utf8);
 137                 TALLOC_FREE(srv_dn);
 138                 return WERR_SERVER_UNAVAILABLE;
 139         }
 140
 141         ldap_memfree(srv_dn_utf8);
 142         ldap_memfree(srv_cn_utf8);
 143
 144         srv_cn_escaped = escape_rdn_val_string_alloc(srv_cn_0);
 145         if (!srv_cn_escaped) {
 146                 TALLOC_FREE(ctx);
 147                 return WERR_SERVER_UNAVAILABLE;
 148         }
 149         sharename_escaped = escape_rdn_val_string_alloc(printer);
 150         if (!sharename_escaped) {
 151                 SAFE_FREE(srv_cn_escaped);
 152                 TALLOC_FREE(ctx);
 153                 return WERR_SERVER_UNAVAILABLE;
 154         }
 155
 156         prt_dn = talloc_asprintf(ctx, "cn=%s-%s,%s", srv_cn_escaped, sharename_escaped, srv_dn);
 157
 158         SAFE_FREE(srv_cn_escaped);
 159         SAFE_FREE(sharename_escaped);
 160
 161         mods = ads_init_mods(ctx);
 162
 163         if (mods == NULL) {
 164                 SAFE_FREE(prt_dn);
 165                 TALLOC_FREE(ctx);
 166                 return WERR_NOMEM;
 167         }
 168
 169         ads_mod_str(ctx, &mods, SPOOL_REG_PRINTERNAME, printer);
 170
 171         /* publish it */
 172         ads_rc = ads_mod_printer_entry(ads, prt_dn, ctx, &mods);
 173         if (ads_rc.err.rc == LDAP_NO_SUCH_OBJECT) {
 174                 int i;
 175                 for (i=0; mods[i] != 0; i++)
 176                         ;
 177                 mods[i] = (LDAPMod *)-1;
 178                 ads_rc = ads_add_printer_entry(ads, prt_dn, ctx, &mods);
 179         }
 180
 181         if (!ADS_ERR_OK(ads_rc)) {
 182                 DEBUG(3, ("error publishing %s: %s\n",
 183                           printer, ads_errstr(ads_rc)));
 184         }
 185
 186         /* retreive the guid and store it locally */
 187         if (ADS_ERR_OK(ads_search_dn(ads, &res, prt_dn, attrs))) {
 188                 ZERO_STRUCT(guid);
 189                 ads_pull_guid(ads, res, &guid);
 190                 ads_msgfree(ads, res);
 191                 store_printer_guid(smbd_messaging_context(), printer, guid);
 192         }
 193         TALLOC_FREE(ctx);
 194
 195         return win_rc;
 196 }
 197
 198 static WERROR nt_printer_unpublish_ads(ADS_STRUCT *ads,
 199                                        const char *printer)
 200 {
 201         ADS_STATUS ads_rc;
 202         LDAPMessage *res = NULL;
 203         char *prt_dn = NULL;
 204
 205         DEBUG(5, ("unpublishing printer %s\n", printer));
 206
 207         /* remove the printer from the directory */
 208         ads_rc = ads_find_printer_on_server(ads, &res,
 209                                             printer, global_myname());
 210
 211         if (ADS_ERR_OK(ads_rc) && res && ads_count_replies(ads, res)) {
 212                 prt_dn = ads_get_dn(ads, talloc_tos(), res);
 213                 if (!prt_dn) {
 214                         ads_msgfree(ads, res);
 215                         return WERR_NOMEM;
 216                 }
 217                 ads_rc = ads_del_dn(ads, prt_dn);
 218                 TALLOC_FREE(prt_dn);
 219         }
 220
 221         if (res) {
 222                 ads_msgfree(ads, res);
 223         }
 224         return WERR_OK;
 225 }
 226
 227 /****************************************************************************
 228  * Publish a printer in the directory
 229  *
 230  * @param mem_ctx      memory context
 231  * @param server_info  server_info to access winreg pipe
 232  * @param pinfo2       printer information
 233  * @param action       publish/unpublish action
 234  * @return WERROR indicating status of publishing
 235  ***************************************************************************/
 236
 237 WERROR nt_printer_publish(TALLOC_CTX *mem_ctx,
 238                           struct auth_serversupplied_info *server_info,
 239                           struct spoolss_PrinterInfo2 *pinfo2,
 240                           int action)
 241 {
 242         uint32_t info2_mask = SPOOLSS_PRINTER_INFO_ATTRIBUTES;
 243         struct spoolss_SetPrinterInfo2 *sinfo2;
 244         ADS_STATUS ads_rc;
 245         ADS_STRUCT *ads = NULL;
 246         WERROR win_rc;
 247
 248         sinfo2 = talloc_zero(mem_ctx, struct spoolss_SetPrinterInfo2);
 249         if (!sinfo2) {
 250                 return WERR_NOMEM;
 251         }
 252
 253         switch (action) {
 254         case DSPRINT_PUBLISH:
 255         case DSPRINT_UPDATE:
 256                 pinfo2->attributes |= PRINTER_ATTRIBUTE_PUBLISHED;
 257                 break;
 258         case DSPRINT_UNPUBLISH:
 259                 pinfo2->attributes ^= PRINTER_ATTRIBUTE_PUBLISHED;
 260                 break;
 261         default:
 262                 win_rc = WERR_NOT_SUPPORTED;
 263                 goto done;
 264         }
 265
 266         sinfo2->attributes = pinfo2->attributes;
 267
 268         win_rc = winreg_update_printer(mem_ctx, server_info,
 269                                         smbd_messaging_context(),
 270                                         pinfo2->sharename, info2_mask,
 271                                         sinfo2, NULL, NULL);
 272         if (!W_ERROR_IS_OK(win_rc)) {
 273                 DEBUG(3, ("err %d saving data\n", W_ERROR_V(win_rc)));
 274                 goto done;
 275         }
 276
 277         TALLOC_FREE(sinfo2);
 278
 279         ads = ads_init(lp_realm(), lp_workgroup(), NULL);
 280         if (!ads) {
 281                 DEBUG(3, ("ads_init() failed\n"));
 282                 win_rc = WERR_SERVER_UNAVAILABLE;
 283                 goto done;
 284         }
 285         setenv(KRB5_ENV_CCNAME, "MEMORY:prtpub_cache", 1);
 286         SAFE_FREE(ads->auth.password);
 287         ads->auth.password = secrets_fetch_machine_password(lp_workgroup(),
 288                 NULL, NULL);
 289
 290         /* ads_connect() will find the DC for us */
 291         ads_rc = ads_connect(ads);
 292         if (!ADS_ERR_OK(ads_rc)) {
 293                 DEBUG(3, ("ads_connect failed: %s\n", ads_errstr(ads_rc)));
 294                 win_rc = WERR_ACCESS_DENIED;
 295                 goto done;
 296         }
 297
 298         switch (action) {
 299         case DSPRINT_PUBLISH:
 300         case DSPRINT_UPDATE:
 301                 win_rc = nt_printer_publish_ads(ads, pinfo2);
 302                 break;
 303         case DSPRINT_UNPUBLISH:
 304                 win_rc = nt_printer_unpublish_ads(ads, pinfo2->sharename);
 305                 break;
 306         }
 307
 308 done:
 309         ads_destroy(&ads);
 310         return win_rc;
 311 }
 312
 313 WERROR check_published_printers(void)
 314 {
 315         ADS_STATUS ads_rc;
 316         ADS_STRUCT *ads = NULL;
 317         int snum;
 318         int n_services = lp_numservices();
 319         TALLOC_CTX *tmp_ctx = NULL;
 320         struct auth_serversupplied_info *server_info = NULL;
 321         struct spoolss_PrinterInfo2 *pinfo2;
 322         NTSTATUS status;
 323         WERROR result;
 324
 325         tmp_ctx = talloc_new(NULL);
 326         if (!tmp_ctx) return WERR_NOMEM;
 327
 328         ads = ads_init(lp_realm(), lp_workgroup(), NULL);
 329         if (!ads) {
 330                 DEBUG(3, ("ads_init() failed\n"));
 331                 return WERR_SERVER_UNAVAILABLE;
 332         }
 333         setenv(KRB5_ENV_CCNAME, "MEMORY:prtpub_cache", 1);
 334         SAFE_FREE(ads->auth.password);
 335         ads->auth.password = secrets_fetch_machine_password(lp_workgroup(),
 336                 NULL, NULL);
 337
 338         /* ads_connect() will find the DC for us */
 339         ads_rc = ads_connect(ads);
 340         if (!ADS_ERR_OK(ads_rc)) {
 341                 DEBUG(3, ("ads_connect failed: %s\n", ads_errstr(ads_rc)));
 342                 result = WERR_ACCESS_DENIED;
 343                 goto done;
 344         }
 345
 346         status = make_server_info_system(tmp_ctx, &server_info);
 347         if (!NT_STATUS_IS_OK(status)) {
 348                 DEBUG(0, ("check_published_printers: "
 349                           "Could not create system server_info\n"));
 350                 result = WERR_ACCESS_DENIED;
 351                 goto done;
 352         }
 353
 354         for (snum = 0; snum < n_services; snum++) {
 355                 if (!lp_snum_ok(snum) || !lp_print_ok(snum)) {
 356                         continue;
 357                 }
 358
 359                 result = winreg_get_printer(tmp_ctx, server_info,
 360                                             smbd_messaging_context(), NULL,
 361                                             lp_servicename(snum), &pinfo2);
 362                 if (!W_ERROR_IS_OK(result)) {
 363                         continue;
 364                 }
 365
 366                 if (pinfo2->attributes & PRINTER_ATTRIBUTE_PUBLISHED) {
 367                         nt_printer_publish_ads(ads, pinfo2);
 368                 }
 369
 370                 TALLOC_FREE(pinfo2);
 371         }
 372
 373         result = WERR_OK;
 374 done:
 375         ads_destroy(&ads);
 376         ads_kdestroy("MEMORY:prtpub_cache");
 377         talloc_free(tmp_ctx);
 378         return result;
 379 }
 380
 381 bool is_printer_published(TALLOC_CTX *mem_ctx,
 382                           struct auth_serversupplied_info *server_info,
 383                           char *servername, char *printer, struct GUID *guid,
 384                           struct spoolss_PrinterInfo2 **info2)
 385 {
 386         struct spoolss_PrinterInfo2 *pinfo2 = NULL;
 387         enum winreg_Type type;
 388         uint8_t *data;
 389         uint32_t data_size;
 390         WERROR result;
 391         NTSTATUS status;
 392
 393         result = winreg_get_printer(mem_ctx, server_info,
 394                                     smbd_messaging_context(),
 395                                     servername, printer, &pinfo2);
 396         if (!W_ERROR_IS_OK(result)) {
 397                 return false;
 398         }
 399
 400         if (!(pinfo2->attributes & PRINTER_ATTRIBUTE_PUBLISHED)) {
 401                 TALLOC_FREE(pinfo2);
 402                 return false;
 403         }
 404
 405         if (!guid) {
 406                 goto done;
 407         }
 408
 409         /* fetching printer guids really ought to be a separate function. */
 410
 411         result = winreg_get_printer_dataex(mem_ctx, server_info,
 412                                            smbd_messaging_context(), printer,
 413                                            SPOOL_DSSPOOLER_KEY, "objectGUID",
 414                                            &type, &data, &data_size);
 415         if (!W_ERROR_IS_OK(result)) {
 416                 TALLOC_FREE(pinfo2);
 417                 return false;
 418         }
 419
 420         /* We used to store the guid as REG_BINARY, then swapped
 421            to REG_SZ for Vista compatibility so check for both */
 422
 423         switch (type) {
 424         case REG_SZ:
 425                 status = GUID_from_string((char *)data, guid);
 426                 if (!NT_STATUS_IS_OK(status)) {
 427                         TALLOC_FREE(pinfo2);
 428                         return false;
 429                 }
 430                 break;
 431
 432         case REG_BINARY:
 433                 if (data_size != sizeof(struct GUID)) {
 434                         TALLOC_FREE(pinfo2);
 435                         return false;
 436                 }
 437                 memcpy(guid, data, sizeof(struct GUID));
 438                 break;
 439         default:
 440                 DEBUG(0,("is_printer_published: GUID value stored as "
 441                          "invaluid type (%d)\n", type));
 442                 break;
 443         }
 444
 445 done:
 446         if (info2) {
 447                 *info2 = talloc_move(mem_ctx, &pinfo2);
 448         }
 449         talloc_free(pinfo2);
 450         return true;
 451 }
 452 #else
 453 WERROR nt_printer_publish(TALLOC_CTX *mem_ctx,
 454                           struct auth_serversupplied_info *server_info,
 455                           struct spoolss_PrinterInfo2 *pinfo2,
 456                           int action)
 457 {
 458         return WERR_OK;
 459 }
 460
 461 WERROR check_published_printers(void)
 462 {
 463         return WERR_OK;
 464 }
 465
 466 bool is_printer_published(TALLOC_CTX *mem_ctx,
 467                           struct auth_serversupplied_info *server_info,
 468                           char *servername, char *printer, struct GUID *guid,
 469                           struct spoolss_PrinterInfo2 **info2)
 470 {
 471         return False;
 472 }
 473 #endif /* HAVE_ADS */