source3/utils/dbwrap_tool.c

   1 /*
   2    Samba Unix/Linux CIFS implementation
   3
   4    low level TDB/CTDB tool using the dbwrap interface
   5
   6    Copyright (C) 2009 Michael Adam <obnox@samba.org>
   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 "system/filesys.h"
  24 #include "dbwrap.h"
  25 #include "messages.h"
  26
  27 typedef enum { OP_FETCH, OP_STORE, OP_DELETE, OP_ERASE, OP_LISTKEYS } dbwrap_op;
  28
  29 typedef enum { TYPE_INT32, TYPE_UINT32 } dbwrap_type;
  30
  31 static int dbwrap_tool_fetch_int32(struct db_context *db,
  32                                    const char *keyname,
  33                                    void *data)
  34 {
  35         int32_t value;
  36
  37         value = dbwrap_fetch_int32(db, keyname);
  38         d_printf("%d\n", value);
  39
  40         return 0;
  41 }
  42
  43 static int dbwrap_tool_fetch_uint32(struct db_context *db,
  44                                     const char *keyname,
  45                                     void *data)
  46 {
  47         uint32_t value;
  48         bool ret;
  49
  50         ret = dbwrap_fetch_uint32(db, keyname, &value);
  51         if (ret) {
  52                 d_printf("%u\n", value);
  53                 return 0;
  54         } else {
  55                 d_fprintf(stderr, "ERROR: could not fetch uint32 key '%s'\n",
  56                           keyname);
  57                 return -1;
  58         }
  59 }
  60
  61 static int dbwrap_tool_store_int32(struct db_context *db,
  62                                    const char *keyname,
  63                                    void *data)
  64 {
  65         NTSTATUS status;
  66         int32_t value = *((int32_t *)data);
  67
  68         status = dbwrap_trans_store_int32(db, keyname, value);
  69
  70         if (!NT_STATUS_IS_OK(status)) {
  71                 d_fprintf(stderr, "ERROR: could not store int32 key '%s': %s\n",
  72                           keyname, nt_errstr(status));
  73                 return -1;
  74         }
  75
  76         return 0;
  77 }
  78
  79 static int dbwrap_tool_store_uint32(struct db_context *db,
  80                                     const char *keyname,
  81                                     void *data)
  82 {
  83         NTSTATUS status;
  84         uint32_t value = *((uint32_t *)data);
  85
  86         status = dbwrap_trans_store_uint32(db, keyname, value);
  87
  88         if (!NT_STATUS_IS_OK(status)) {
  89                 d_fprintf(stderr,
  90                           "ERROR: could not store uint32 key '%s': %s\n",
  91                           keyname, nt_errstr(status));
  92                 return -1;
  93         }
  94
  95         return 0;
  96 }
  97
  98 static int dbwrap_tool_delete(struct db_context *db,
  99                               const char *keyname,
 100                               void *data)
 101 {
 102         NTSTATUS status;
 103
 104         status = dbwrap_trans_delete_bystring(db, keyname);
 105
 106         if (!NT_STATUS_IS_OK(status)) {
 107                 d_fprintf(stderr, "ERROR deleting record %s : %s\n",
 108                           keyname, nt_errstr(status));
 109                 return -1;
 110         }
 111
 112         return 0;
 113 }
 114
 115 static int delete_fn(struct db_record *rec, void *priv)
 116 {
 117         rec->delete_rec(rec);
 118         return 0;
 119 }
 120
 121 /**
 122  * dbwrap_tool_erase: erase the whole data base
 123  * the keyname argument is not used.
 124  */
 125 static int dbwrap_tool_erase(struct db_context *db,
 126                              const char *keyname,
 127                              void *data)
 128 {
 129         int ret;
 130
 131         ret = db->traverse(db, delete_fn, NULL);
 132
 133         if (ret < 0) {
 134                 d_fprintf(stderr, "ERROR erasing the database\n");
 135                 return -1;
 136         }
 137
 138         return 0;
 139 }
 140
 141 static int listkey_fn(struct db_record *rec, void *private_data)
 142 {
 143         int length = rec->key.dsize;
 144         unsigned char *p = (unsigned char *)rec->key.dptr;
 145
 146         while (length--) {
 147                 if (isprint(*p) && !strchr("\"\\", *p)) {
 148                         d_printf("%c", *p);
 149                 } else {
 150                         d_printf("\\%02X", *p);
 151                 }
 152                 p++;
 153         }
 154
 155         d_printf("\n");
 156
 157         return 0;
 158 }
 159
 160 static int dbwrap_tool_listkeys(struct db_context *db,
 161                                 const char *keyname,
 162                                 void *data)
 163 {
 164         int ret;
 165
 166         ret = db->traverse_read(db, listkey_fn, NULL);
 167
 168         if (ret < 0) {
 169                 d_fprintf(stderr, "ERROR listing db keys\n");
 170                 return -1;
 171         }
 172
 173         return 0;
 174 }
 175
 176 struct dbwrap_op_dispatch_table {
 177         dbwrap_op op;
 178         dbwrap_type type;
 179         int (*cmd)(struct db_context *db,
 180                    const char *keyname,
 181                    void *data);
 182 };
 183
 184 struct dbwrap_op_dispatch_table dispatch_table[] = {
 185         { OP_FETCH,  TYPE_INT32,  dbwrap_tool_fetch_int32 },
 186         { OP_FETCH,  TYPE_UINT32, dbwrap_tool_fetch_uint32 },
 187         { OP_STORE,  TYPE_INT32,  dbwrap_tool_store_int32 },
 188         { OP_STORE,  TYPE_UINT32, dbwrap_tool_store_uint32 },
 189         { OP_DELETE, TYPE_INT32,  dbwrap_tool_delete },
 190         { OP_ERASE,  TYPE_INT32,  dbwrap_tool_erase },
 191         { OP_LISTKEYS, TYPE_INT32, dbwrap_tool_listkeys },
 192         { 0, 0, NULL },
 193 };
 194
 195 int main(int argc, const char **argv)
 196 {
 197         struct tevent_context *evt_ctx;
 198         struct messaging_context *msg_ctx;
 199         struct db_context *db;
 200
 201         uint16_t count;
 202
 203         const char *dbname;
 204         const char *opname;
 205         dbwrap_op op;
 206         const char *keyname = "";
 207         const char *keytype = "int32";
 208         dbwrap_type type;
 209         const char *valuestr = "0";
 210         int32_t value = 0;
 211
 212         TALLOC_CTX *mem_ctx = talloc_stackframe();
 213
 214         int ret = 1;
 215
 216         load_case_tables();
 217         lp_set_cmdline("log level", "0");
 218         setup_logging(argv[0], DEBUG_STDERR);
 219         lp_load(get_dyn_CONFIGFILE(), true, false, false, true);
 220
 221         if ((argc < 3) || (argc > 6)) {
 222                 d_fprintf(stderr,
 223                           "USAGE: %s <database> <op> [<key> [<type> [<value>]]]\n"
 224                           "       ops: fetch, store, delete, erase, listkeys\n"
 225                           "       types: int32, uint32\n",
 226                          argv[0]);
 227                 goto done;
 228         }
 229
 230         dbname = argv[1];
 231         opname = argv[2];
 232
 233         if (strcmp(opname, "store") == 0) {
 234                 if (argc != 6) {
 235                         d_fprintf(stderr, "ERROR: operation 'store' requires "
 236                                   "value argument\n");
 237                         goto done;
 238                 }
 239                 valuestr = argv[5];
 240                 keytype = argv[4];
 241                 keyname = argv[3];
 242                 op = OP_STORE;
 243         } else if (strcmp(opname, "fetch") == 0) {
 244                 if (argc != 5) {
 245                         d_fprintf(stderr, "ERROR: operation 'fetch' requires "
 246                                   "type but not value argument\n");
 247                         goto done;
 248                 }
 249                 op = OP_FETCH;
 250                 keytype = argv[4];
 251                 keyname = argv[3];
 252         } else if (strcmp(opname, "delete") == 0) {
 253                 if (argc != 4) {
 254                         d_fprintf(stderr, "ERROR: operation 'delete' does "
 255                                   "not allow type nor value argument\n");
 256                         goto done;
 257                 }
 258                 keyname = argv[3];
 259                 op = OP_DELETE;
 260         } else if (strcmp(opname, "erase") == 0) {
 261                 if (argc != 3) {
 262                         d_fprintf(stderr, "ERROR: operation 'erase' does "
 263                                   "not take a key argument\n");
 264                         goto done;
 265                 }
 266                 op = OP_ERASE;
 267         } else if (strcmp(opname, "listkeys") == 0) {
 268                 if (argc != 3) {
 269                         d_fprintf(stderr, "ERROR: operation 'listkeys' does "
 270                                   "not take a key argument\n");
 271                         goto done;
 272                 }
 273                 op = OP_LISTKEYS;
 274         } else {
 275                 d_fprintf(stderr,
 276                           "ERROR: invalid op '%s' specified\n"
 277                           "       supported ops: fetch, store, delete\n",
 278                           opname);
 279                 goto done;
 280         }
 281
 282         if (strcmp(keytype, "int32") == 0) {
 283                 type = TYPE_INT32;
 284                 value = (int32_t)strtol(valuestr, NULL, 10);
 285         } else if (strcmp(keytype, "uint32") == 0) {
 286                 type = TYPE_UINT32;
 287                 value = (int32_t)strtoul(valuestr, NULL, 10);
 288         } else {
 289                 d_fprintf(stderr, "ERROR: invalid type '%s' specified.\n"
 290                                   "       supported types: int32, uint32\n",
 291                                   keytype);
 292                 goto done;
 293         }
 294
 295         evt_ctx = tevent_context_init(mem_ctx);
 296         if (evt_ctx == NULL) {
 297                 d_fprintf(stderr, "ERROR: could not init event context\n");
 298                 goto done;
 299         }
 300
 301         msg_ctx = messaging_init(mem_ctx, procid_self(), evt_ctx);
 302         if (msg_ctx == NULL) {
 303                 d_fprintf(stderr, "ERROR: could not init messaging context\n");
 304                 goto done;
 305         }
 306
 307         db = db_open(mem_ctx, dbname, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644);
 308         if (db == NULL) {
 309                 d_fprintf(stderr, "ERROR: could not open dbname\n");
 310                 goto done;
 311         }
 312
 313         for (count = 0; dispatch_table[count].cmd != NULL; count++) {
 314                 if ((op == dispatch_table[count].op) &&
 315                     (type == dispatch_table[count].type))
 316                 {
 317                         ret = dispatch_table[count].cmd(db, keyname, &value);
 318                         break;
 319                 }
 320         }
 321
 322 done:
 323         TALLOC_FREE(mem_ctx);
 324         return ret;
 325 }