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/dbwrap.h"
  25 #include "dbwrap/dbwrap_open.h"
  26 #include "messages.h"
  27
  28 typedef enum { OP_FETCH, OP_STORE, OP_DELETE, OP_ERASE, OP_LISTKEYS } dbwrap_op;
  29
  30 typedef enum { TYPE_INT32, TYPE_UINT32 } dbwrap_type;
  31
  32 static int dbwrap_tool_fetch_int32(struct db_context *db,
  33                                    const char *keyname,
  34                                    void *data)
  35 {
  36         int32_t value;
  37
  38         value = dbwrap_fetch_int32(db, keyname);
  39         d_printf("%d\n", value);
  40
  41         return 0;
  42 }
  43
  44 static int dbwrap_tool_fetch_uint32(struct db_context *db,
  45                                     const char *keyname,
  46                                     void *data)
  47 {
  48         uint32_t value;
  49         bool ret;
  50
  51         ret = dbwrap_fetch_uint32(db, keyname, &value);
  52         if (ret) {
  53                 d_printf("%u\n", value);
  54                 return 0;
  55         } else {
  56                 d_fprintf(stderr, "ERROR: could not fetch uint32 key '%s'\n",
  57                           keyname);
  58                 return -1;
  59         }
  60 }
  61
  62 static int dbwrap_tool_store_int32(struct db_context *db,
  63                                    const char *keyname,
  64                                    void *data)
  65 {
  66         NTSTATUS status;
  67         int32_t value = *((int32_t *)data);
  68
  69         status = dbwrap_trans_store_int32(db, keyname, value);
  70
  71         if (!NT_STATUS_IS_OK(status)) {
  72                 d_fprintf(stderr, "ERROR: could not store int32 key '%s': %s\n",
  73                           keyname, nt_errstr(status));
  74                 return -1;
  75         }
  76
  77         return 0;
  78 }
  79
  80 static int dbwrap_tool_store_uint32(struct db_context *db,
  81                                     const char *keyname,
  82                                     void *data)
  83 {
  84         NTSTATUS status;
  85         uint32_t value = *((uint32_t *)data);
  86
  87         status = dbwrap_trans_store_uint32(db, keyname, value);
  88
  89         if (!NT_STATUS_IS_OK(status)) {
  90                 d_fprintf(stderr,
  91                           "ERROR: could not store uint32 key '%s': %s\n",
  92                           keyname, nt_errstr(status));
  93                 return -1;
  94         }
  95
  96         return 0;
  97 }
  98
  99 static int dbwrap_tool_delete(struct db_context *db,
 100                               const char *keyname,
 101                               void *data)
 102 {
 103         NTSTATUS status;
 104
 105         status = dbwrap_trans_delete_bystring(db, keyname);
 106
 107         if (!NT_STATUS_IS_OK(status)) {
 108                 d_fprintf(stderr, "ERROR deleting record %s : %s\n",
 109                           keyname, nt_errstr(status));
 110                 return -1;
 111         }
 112
 113         return 0;
 114 }
 115
 116 static int delete_fn(struct db_record *rec, void *priv)
 117 {
 118         rec->delete_rec(rec);
 119         return 0;
 120 }
 121
 122 /**
 123  * dbwrap_tool_erase: erase the whole data base
 124  * the keyname argument is not used.
 125  */
 126 static int dbwrap_tool_erase(struct db_context *db,
 127                              const char *keyname,
 128                              void *data)
 129 {
 130         int ret;
 131
 132         ret = db->traverse(db, delete_fn, NULL);
 133
 134         if (ret < 0) {
 135                 d_fprintf(stderr, "ERROR erasing the database\n");
 136                 return -1;
 137         }
 138
 139         return 0;
 140 }
 141
 142 static int listkey_fn(struct db_record *rec, void *private_data)
 143 {
 144         int length = rec->key.dsize;
 145         unsigned char *p = (unsigned char *)rec->key.dptr;
 146
 147         while (length--) {
 148                 if (isprint(*p) && !strchr("\"\\", *p)) {
 149                         d_printf("%c", *p);
 150                 } else {
 151                         d_printf("\\%02X", *p);
 152                 }
 153                 p++;
 154         }
 155
 156         d_printf("\n");
 157
 158         return 0;
 159 }
 160
 161 static int dbwrap_tool_listkeys(struct db_context *db,
 162                                 const char *keyname,
 163                                 void *data)
 164 {
 165         int ret;
 166
 167         ret = db->traverse_read(db, listkey_fn, NULL);
 168
 169         if (ret < 0) {
 170                 d_fprintf(stderr, "ERROR listing db keys\n");
 171                 return -1;
 172         }
 173
 174         return 0;
 175 }
 176
 177 struct dbwrap_op_dispatch_table {
 178         dbwrap_op op;
 179         dbwrap_type type;
 180         int (*cmd)(struct db_context *db,
 181                    const char *keyname,
 182                    void *data);
 183 };
 184
 185 struct dbwrap_op_dispatch_table dispatch_table[] = {
 186         { OP_FETCH,  TYPE_INT32,  dbwrap_tool_fetch_int32 },
 187         { OP_FETCH,  TYPE_UINT32, dbwrap_tool_fetch_uint32 },
 188         { OP_STORE,  TYPE_INT32,  dbwrap_tool_store_int32 },
 189         { OP_STORE,  TYPE_UINT32, dbwrap_tool_store_uint32 },
 190         { OP_DELETE, TYPE_INT32,  dbwrap_tool_delete },
 191         { OP_ERASE,  TYPE_INT32,  dbwrap_tool_erase },
 192         { OP_LISTKEYS, TYPE_INT32, dbwrap_tool_listkeys },
 193         { 0, 0, NULL },
 194 };
 195
 196 int main(int argc, const char **argv)
 197 {
 198         struct tevent_context *evt_ctx;
 199         struct messaging_context *msg_ctx;
 200         struct db_context *db;
 201
 202         uint16_t count;
 203
 204         const char *dbname;
 205         const char *opname;
 206         dbwrap_op op;
 207         const char *keyname = "";
 208         const char *keytype = "int32";
 209         dbwrap_type type;
 210         const char *valuestr = "0";
 211         int32_t value = 0;
 212
 213         TALLOC_CTX *mem_ctx = talloc_stackframe();
 214
 215         int ret = 1;
 216
 217         load_case_tables();
 218         lp_set_cmdline("log level", "0");
 219         setup_logging(argv[0], DEBUG_STDERR);
 220         lp_load_global(get_dyn_CONFIGFILE());
 221
 222         if ((argc < 3) || (argc > 6)) {
 223                 d_fprintf(stderr,
 224                           "USAGE: %s <database> <op> [<key> [<type> [<value>]]]\n"
 225                           "       ops: fetch, store, delete, erase, listkeys\n"
 226                           "       types: int32, uint32\n",
 227                          argv[0]);
 228                 goto done;
 229         }
 230
 231         dbname = argv[1];
 232         opname = argv[2];
 233
 234         if (strcmp(opname, "store") == 0) {
 235                 if (argc != 6) {
 236                         d_fprintf(stderr, "ERROR: operation 'store' requires "
 237                                   "value argument\n");
 238                         goto done;
 239                 }
 240                 valuestr = argv[5];
 241                 keytype = argv[4];
 242                 keyname = argv[3];
 243                 op = OP_STORE;
 244         } else if (strcmp(opname, "fetch") == 0) {
 245                 if (argc != 5) {
 246                         d_fprintf(stderr, "ERROR: operation 'fetch' requires "
 247                                   "type but not value argument\n");
 248                         goto done;
 249                 }
 250                 op = OP_FETCH;
 251                 keytype = argv[4];
 252                 keyname = argv[3];
 253         } else if (strcmp(opname, "delete") == 0) {
 254                 if (argc != 4) {
 255                         d_fprintf(stderr, "ERROR: operation 'delete' does "
 256                                   "not allow type nor value argument\n");
 257                         goto done;
 258                 }
 259                 keyname = argv[3];
 260                 op = OP_DELETE;
 261         } else if (strcmp(opname, "erase") == 0) {
 262                 if (argc != 3) {
 263                         d_fprintf(stderr, "ERROR: operation 'erase' does "
 264                                   "not take a key argument\n");
 265                         goto done;
 266                 }
 267                 op = OP_ERASE;
 268         } else if (strcmp(opname, "listkeys") == 0) {
 269                 if (argc != 3) {
 270                         d_fprintf(stderr, "ERROR: operation 'listkeys' does "
 271                                   "not take a key argument\n");
 272                         goto done;
 273                 }
 274                 op = OP_LISTKEYS;
 275         } else {
 276                 d_fprintf(stderr,
 277                           "ERROR: invalid op '%s' specified\n"
 278                           "       supported ops: fetch, store, delete\n",
 279                           opname);
 280                 goto done;
 281         }
 282
 283         if (strcmp(keytype, "int32") == 0) {
 284                 type = TYPE_INT32;
 285                 value = (int32_t)strtol(valuestr, NULL, 10);
 286         } else if (strcmp(keytype, "uint32") == 0) {
 287                 type = TYPE_UINT32;
 288                 value = (int32_t)strtoul(valuestr, NULL, 10);
 289         } else {
 290                 d_fprintf(stderr, "ERROR: invalid type '%s' specified.\n"
 291                                   "       supported types: int32, uint32\n",
 292                                   keytype);
 293                 goto done;
 294         }
 295
 296         evt_ctx = tevent_context_init(mem_ctx);
 297         if (evt_ctx == NULL) {
 298                 d_fprintf(stderr, "ERROR: could not init event context\n");
 299                 goto done;
 300         }
 301
 302         msg_ctx = messaging_init(mem_ctx, procid_self(), evt_ctx);
 303         if (msg_ctx == NULL) {
 304                 d_fprintf(stderr, "ERROR: could not init messaging context\n");
 305                 goto done;
 306         }
 307
 308         db = db_open(mem_ctx, dbname, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644);
 309         if (db == NULL) {
 310                 d_fprintf(stderr, "ERROR: could not open dbname\n");
 311                 goto done;
 312         }
 313
 314         for (count = 0; dispatch_table[count].cmd != NULL; count++) {
 315                 if ((op == dispatch_table[count].op) &&
 316                     (type == dispatch_table[count].type))
 317                 {
 318                         ret = dispatch_table[count].cmd(db, keyname, &value);
 319                         break;
 320                 }
 321         }
 322
 323 done:
 324         TALLOC_FREE(mem_ctx);
 325         return ret;
 326 }