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