testsuite/printing/psec.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4
   5    Printer security permission manipulation.
   6
   7    Copyright (C) Tim Potter 2000
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 /* This program can get or set NT printer security permissions from the
  24    command line.  Usage: psec getsec|setsec printername.  You must have
  25    write access to the ntdrivers.tdb file to set permissions and read
  26    access to get permissions.
  27
  28    For this program to compile using the supplied Makefile.psec, Samba
  29    must be configured with the --srcdir option
  30
  31    For getsec, output like the following is sent to standard output:
  32
  33        S-1-5-21-1067277791-1719175008-3000797951-500
  34
  35        1 9 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-501
  36        1 2 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-501
  37        0 9 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-500
  38        0 2 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-500
  39        0 9 0x10000000 S-1-5-21-1067277791-1719175008-3000797951-513
  40        0 2 0x00020000 S-1-5-21-1067277791-1719175008-3000797951-513
  41        0 2 0xe0000000 S-1-1-0
  42
  43    The first two lines describe the owner user and owner group of the printer.
  44    If either of these lines are blank then the respective owner property is
  45    not set.  The remaining lines list the printer permissions or ACE entries,
  46    one per line.  Each column describes a different property of the ACE:
  47
  48        Column    Description
  49        -------------------------------------------------------------------
  50          1       ACE type (allow/deny etc) defined in rpc_secdes.h
  51          2       ACE flags defined in rpc_secdes.h
  52          3       ACE mask - printer ACE masks are defined in rpc_spoolss.h
  53          4       SID the ACE applies to
  54
  55    The above example describes the following permissions in order:
  56
  57        - The guest user has No Access to the printer
  58        - The domain administrator has Full Access
  59        - Domain Users can Manage Documents
  60        - Everyone has Print access
  61
  62    The setsec command takes the output format but sets the security descriptor
  63    appropriately. */
  64
  65 #include "includes.h"
  66
  67 TDB_CONTEXT *tdb;
  68
  69 /* ACE type conversions */
  70
  71 char *ace_type_to_str(uint ace_type)
  72 {
  73         static fstring temp;
  74
  75         switch(ace_type) {
  76         case SEC_ACE_TYPE_ACCESS_DENIED:
  77                 return "DENY";
  78         case SEC_ACE_TYPE_ACCESS_ALLOWED:
  79                 return "ALLOW";
  80         }
  81
  82         slprintf(temp, sizeof(temp) - 1, "0x%02x", ace_type);
  83         return temp;
  84 }
  85
  86 uint str_to_ace_type(char *ace_type)
  87 {
  88         if (strcmp(ace_type, "ALLOWED") == 0)
  89                 return SEC_ACE_TYPE_ACCESS_ALLOWED;
  90
  91         if (strcmp(ace_type, "DENIED") == 0)
  92                 return SEC_ACE_TYPE_ACCESS_DENIED;
  93
  94         return -1;
  95 }
  96
  97 /* ACE mask (permission) conversions */
  98
  99 char *ace_mask_to_str(uint32 ace_mask)
 100 {
 101         static fstring temp;
 102
 103         switch (ace_mask) {
 104         case PRINTER_ACE_FULL_CONTROL:
 105                 return "Full Control";
 106         case PRINTER_ACE_MANAGE_DOCUMENTS:
 107                 return "Manage Documents";
 108         case PRINTER_ACE_PRINT:
 109                 return "Print";
 110         }
 111
 112         slprintf(temp, sizeof(temp) - 1, "0x%08x", ace_mask);
 113         return temp;
 114 }
 115
 116 uint32 str_to_ace_mask(char *ace_mask)
 117 {
 118         if (strcmp(ace_mask, "Full Control") == 0)
 119                 return PRINTER_ACE_FULL_CONTROL;
 120
 121         if (strcmp(ace_mask, "Manage Documents") == 0)
 122                 return PRINTER_ACE_MANAGE_DOCUMENTS;
 123
 124         if (strcmp(ace_mask, "Print") == 0)
 125                 return PRINTER_ACE_PRINT;
 126
 127         return -1;
 128 }
 129
 130 /* ACE conversions */
 131
 132 char *ace_to_str(SEC_ACE *ace)
 133 {
 134         static pstring temp;
 135         fstring sidstr;
 136
 137         sid_to_string(sidstr, &ace->sid);
 138
 139         slprintf(temp, sizeof(temp) - 1, "%s %d %s %s",
 140                  ace_type_to_str(ace->type), ace->flags,
 141                  ace_mask_to_str(ace->info.mask), sidstr);
 142
 143         return temp;
 144 }
 145
 146 void str_to_ace(SEC_ACE *ace, char *ace_str)
 147 {
 148         SEC_ACCESS sa;
 149         DOM_SID sid;
 150         uint32 mask;
 151         uint8 type, flags;
 152
 153         init_sec_access(&sa, mask);
 154         init_sec_ace(ace, &sid, type, sa, flags);
 155 }
 156
 157 /* Get a printer security descriptor */
 158
 159 int psec_getsec(char *printer)
 160 {
 161         SEC_DESC_BUF *secdesc_ctr = NULL;
 162         TALLOC_CTX *mem_ctx = NULL;
 163         fstring keystr, sidstr, tdb_path;
 164         prs_struct ps;
 165         int result = 0, i;
 166
 167         ZERO_STRUCT(ps);
 168
 169         /* Open tdb for reading */
 170
 171         slprintf(tdb_path, sizeof(tdb_path) - 1, "%s/ntdrivers.tdb",
 172                  lp_lockdir());
 173
 174         tdb = tdb_open(tdb_path, 0, 0, O_RDONLY, 0600);
 175
 176         if (!tdb) {
 177                 printf("psec: failed to open nt drivers database: %s\n",
 178                        sys_errlist[errno]);
 179                 return 1;
 180         }
 181
 182         /* Get security blob from tdb */
 183
 184         slprintf(keystr, sizeof(keystr) - 1, "SECDESC/%s", printer);
 185
 186         mem_ctx = talloc_init();
 187
 188         if (!mem_ctx) {
 189                 printf("memory allocation error\n");
 190                 result = 1;
 191                 goto done;
 192         }
 193
 194         if (tdb_prs_fetch(tdb, keystr, &ps, mem_ctx) != 0) {
 195                 printf("error fetching descriptor for printer %s\n",
 196                        printer);
 197                 /* cannot do a prs_mem_free() when tdb_prs_fetch fails */
 198                 /* as the prs structure has not been initialized */
 199                 tdb_close(tdb);
 200                 talloc_destroy(mem_ctx);
 201                 return 1;
 202         }
 203
 204         /* Unpack into security descriptor buffer */
 205
 206         if (!sec_io_desc_buf("nt_printing_getsec", &secdesc_ctr, &ps, 1)) {
 207                 printf("error unpacking sec_desc_buf\n");
 208                 result = 1;
 209                 goto done;
 210         }
 211
 212         /* Print owner and group sid */
 213
 214         if (secdesc_ctr->sec->owner_sid) {
 215                 sid_to_string(sidstr, secdesc_ctr->sec->owner_sid);
 216         } else {
 217                 fstrcpy(sidstr, "");
 218         }
 219
 220         printf("%s\n", sidstr);
 221
 222         if (secdesc_ctr->sec->grp_sid) {
 223                 sid_to_string(sidstr, secdesc_ctr->sec->grp_sid);
 224         } else {
 225                 fstrcpy(sidstr, "");
 226         }
 227
 228         printf("%s\n", sidstr);
 229
 230         /* Print aces */
 231
 232         if (!secdesc_ctr->sec->dacl) {
 233                 result = 0;
 234                 goto done;
 235         }
 236
 237         for (i = 0; i < secdesc_ctr->sec->dacl->num_aces; i++) {
 238                 SEC_ACE *ace = &secdesc_ctr->sec->dacl->ace[i];
 239
 240                 sid_to_string(sidstr, &ace->sid);
 241
 242                 printf("%d %d 0x%08x %s\n", ace->type, ace->flags,
 243                        ace->info.mask, sidstr);
 244         }
 245
 246  done:
 247         if (tdb) tdb_close(tdb);
 248         if (mem_ctx) talloc_destroy(mem_ctx);
 249         if (secdesc_ctr) free_sec_desc_buf(&secdesc_ctr);
 250         prs_mem_free(&ps);
 251
 252         return result;
 253 }
 254
 255 /* Set a printer security descriptor */
 256
 257 int psec_setsec(char *printer)
 258 {
 259         DOM_SID user_sid, group_sid;
 260         SEC_ACE *ace_list = NULL;
 261         SEC_ACL *dacl = NULL;
 262         SEC_DESC *sd;
 263         SEC_DESC_BUF *sdb = NULL;
 264         int result = 0, num_aces = 0;
 265         fstring line, keystr, tdb_path;
 266         size_t size;
 267         prs_struct ps;
 268         TALLOC_CTX *mem_ctx = NULL;
 269         BOOL has_user_sid = False, has_group_sid = False;
 270
 271         ZERO_STRUCT(ps);
 272
 273         /* Open tdb for reading */
 274
 275         slprintf(tdb_path, sizeof(tdb_path) - 1, "%s/ntdrivers.tdb",
 276                  lp_lockdir());
 277
 278         tdb = tdb_open(tdb_path, 0, 0, O_RDWR, 0600);
 279
 280         if (!tdb) {
 281                 printf("psec: failed to open nt drivers database: %s\n",
 282                        sys_errlist[errno]);
 283                 result = 1;
 284                 goto done;
 285         }
 286
 287         /* Read owner and group sid */
 288
 289         fgets(line, sizeof(fstring), stdin);
 290         if (line[0] != '\n') {
 291                 string_to_sid(&user_sid, line);
 292                 has_user_sid = True;
 293         }
 294
 295         fgets(line, sizeof(fstring), stdin);
 296         if (line[0] != '\n') {
 297                 string_to_sid(&group_sid, line);
 298                 has_group_sid = True;
 299         }
 300
 301         /* Read ACEs from standard input for discretionary ACL */
 302
 303         while(fgets(line, sizeof(fstring), stdin)) {
 304                 int ace_type, ace_flags;
 305                 uint32 ace_mask;
 306                 fstring sidstr;
 307                 DOM_SID sid;
 308                 SEC_ACCESS sa;
 309
 310                 if (sscanf(line, "%d %d 0x%x %s", &ace_type, &ace_flags,
 311                            &ace_mask, sidstr) != 4) {
 312                         continue;
 313                 }
 314
 315                 string_to_sid(&sid, sidstr);
 316
 317                 ace_list = Realloc(ace_list, sizeof(SEC_ACE) *
 318                                    (num_aces + 1));
 319
 320                 init_sec_access(&sa, ace_mask);
 321                 init_sec_ace(&ace_list[num_aces], &sid, ace_type, sa,
 322                              ace_flags);
 323
 324                 num_aces++;
 325         }
 326
 327         dacl = make_sec_acl(ACL_REVISION, num_aces, ace_list);
 328         free(ace_list);
 329
 330         /* Create security descriptor */
 331
 332         sd = make_sec_desc(SEC_DESC_REVISION,
 333                            has_user_sid ? &user_sid : NULL,
 334                            has_group_sid ? &group_sid : NULL,
 335                            NULL, /* System ACL */
 336                            dacl, /* Discretionary ACL */
 337                            &size);
 338
 339         free_sec_acl(&dacl);
 340
 341         sdb = make_sec_desc_buf(size, sd);
 342
 343         free_sec_desc(&sd);
 344
 345         /* Write security descriptor to tdb */
 346
 347         mem_ctx = talloc_init();
 348
 349         if (!mem_ctx) {
 350                 printf("memory allocation error\n");
 351                 result = 1;
 352                 goto done;
 353         }
 354
 355         prs_init(&ps, (uint32)sec_desc_size(sdb->sec) +
 356                  sizeof(SEC_DESC_BUF), 4, mem_ctx, MARSHALL);
 357
 358         if (!sec_io_desc_buf("nt_printing_setsec", &sdb, &ps, 1)) {
 359                 printf("sec_io_desc_buf failed\n");
 360                 goto done;
 361         }
 362
 363         slprintf(keystr, sizeof(keystr) - 1, "SECDESC/%s", printer);
 364
 365         if (!tdb_prs_store(tdb, keystr, &ps)==0) {
 366                 printf("Failed to store secdesc for %s\n", printer);
 367                 goto done;
 368         }
 369
 370  done:
 371         if (tdb) tdb_close(tdb);
 372         if (sdb) free_sec_desc_buf(&sdb);
 373         if (mem_ctx) talloc_destroy(mem_ctx);
 374         prs_mem_free(&ps);
 375
 376         return result;
 377 }
 378
 379 /* Help */
 380
 381 void usage(void)
 382 {
 383         printf("Usage: psec getsec|setsec printername\n");
 384 }
 385
 386 /* Main function */
 387
 388 int main(int argc, char **argv)
 389 {
 390         pstring servicesf = CONFIGFILE;
 391
 392         /* Argument check */
 393
 394         if (argc == 1) {
 395                 usage();
 396                 return 1;
 397         }
 398
 399         /* Load smb.conf file */
 400
 401         charset_initialise();
 402
 403         if (!lp_load(servicesf,False,False,True)) {
 404                 fprintf(stderr, "Couldn't load confiuration file %s\n",
 405                         servicesf);
 406                 return 1;
 407         }
 408
 409         /* Do commands */
 410
 411         if (strcmp(argv[1], "setsec") == 0) {
 412
 413                 if (argc != 3) {
 414                         usage();
 415                         return 1;
 416                 }
 417
 418                 return psec_setsec(argv[2]);
 419         }
 420
 421         if (strcmp(argv[1], "getsec") == 0) {
 422
 423                 if (argc != 3) {
 424                         usage();
 425                         return 1;
 426                 }
 427
 428                 return psec_getsec(argv[2]);
 429         }
 430
 431         /* An unknown command */
 432
 433         printf("psec: unknown command %s\n", argv[1]);
 434         return 1;
 435 }