source/lib/ldb/tools/ldbedit.c

   1 /*
   2    ldb database library
   3
   4    Copyright (C) Andrew Tridgell  2004
   5
   6      ** NOTE! The following LGPL license applies to the ldb
   7      ** library. This does NOT imply that all of Samba is released
   8      ** under the LGPL
   9
  10    This library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 2 of the License, or (at your option) any later version.
  14
  15    This library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Lesser General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with this library; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23 */
  24
  25 /*
  26  *  Name: ldb
  27  *
  28  *  Component: ldbedit
  29  *
  30  *  Description: utility for ldb database editing
  31  *
  32  *  Author: Andrew Tridgell
  33  */
  34
  35 #include "includes.h"
  36 #include "ldb/include/includes.h"
  37 #include "ldb/tools/cmdline.h"
  38
  39 static struct ldb_cmdline *options;
  40
  41 /*
  42   debug routine
  43 */
  44 static void ldif_write_msg(struct ldb_context *ldb,
  45                            FILE *f,
  46                            enum ldb_changetype changetype,
  47                            struct ldb_message *msg)
  48 {
  49         struct ldb_ldif ldif;
  50         ldif.changetype = changetype;
  51         ldif.msg = msg;
  52         ldb_ldif_write_file(ldb, f, &ldif);
  53 }
  54
  55 /*
  56   modify a database record so msg1 becomes msg2
  57   returns the number of modified elements
  58 */
  59 static int modify_record(struct ldb_context *ldb,
  60                          struct ldb_message *msg1,
  61                          struct ldb_message *msg2)
  62 {
  63         struct ldb_message *mod;
  64
  65         mod = ldb_msg_diff(ldb, msg1, msg2);
  66         if (mod == NULL) {
  67                 fprintf(stderr, "Failed to calculate message differences\n");
  68                 return -1;
  69         }
  70
  71         if (mod->num_elements == 0) {
  72                 return 0;
  73         }
  74
  75         if (options->verbose > 0) {
  76                 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_MODIFY, mod);
  77         }
  78
  79         if (ldb_modify(ldb, mod) != 0) {
  80                 fprintf(stderr, "failed to modify %s - %s\n",
  81                         ldb_dn_linearize(ldb, msg1->dn), ldb_errstring(ldb));
  82                 return -1;
  83         }
  84
  85         return mod->num_elements;
  86 }
  87
  88 /*
  89   find dn in msgs[]
  90 */
  91 static struct ldb_message *msg_find(struct ldb_context *ldb,
  92                                     struct ldb_message **msgs,
  93                                     int count,
  94                                     const struct ldb_dn *dn)
  95 {
  96         int i;
  97         for (i=0;i<count;i++) {
  98                 if (ldb_dn_compare(ldb, dn, msgs[i]->dn) == 0) {
  99                         return msgs[i];
 100                 }
 101         }
 102         return NULL;
 103 }
 104
 105 /*
 106   merge the changes in msgs2 into the messages from msgs1
 107 */
 108 static int merge_edits(struct ldb_context *ldb,
 109                        struct ldb_message **msgs1, int count1,
 110                        struct ldb_message **msgs2, int count2)
 111 {
 112         int i;
 113         struct ldb_message *msg;
 114         int ret = 0;
 115         int adds=0, modifies=0, deletes=0;
 116
 117         /* do the adds and modifies */
 118         for (i=0;i<count2;i++) {
 119                 msg = msg_find(ldb, msgs1, count1, msgs2[i]->dn);
 120                 if (!msg) {
 121                         if (options->verbose > 0) {
 122                                 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_ADD, msgs2[i]);
 123                         }
 124                         if (ldb_add(ldb, msgs2[i]) != 0) {
 125                                 fprintf(stderr, "failed to add %s - %s\n",
 126                                         ldb_dn_linearize(ldb, msgs2[i]->dn),
 127                                         ldb_errstring(ldb));
 128                                 return -1;
 129                         }
 130                         adds++;
 131                 } else {
 132                         if (modify_record(ldb, msg, msgs2[i]) > 0) {
 133                                 modifies++;
 134                         }
 135                 }
 136         }
 137
 138         /* do the deletes */
 139         for (i=0;i<count1;i++) {
 140                 msg = msg_find(ldb, msgs2, count2, msgs1[i]->dn);
 141                 if (!msg) {
 142                         if (options->verbose > 0) {
 143                                 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_DELETE, msgs1[i]);
 144                         }
 145                         if (ldb_delete(ldb, msgs1[i]->dn) != 0) {
 146                                 fprintf(stderr, "failed to delete %s - %s\n",
 147                                         ldb_dn_linearize(ldb, msgs1[i]->dn),
 148                                         ldb_errstring(ldb));
 149                                 return -1;
 150                         }
 151                         deletes++;
 152                 }
 153         }
 154
 155         printf("# %d adds  %d modifies  %d deletes\n", adds, modifies, deletes);
 156
 157         return ret;
 158 }
 159
 160 /*
 161   save a set of messages as ldif to a file
 162 */
 163 static int save_ldif(struct ldb_context *ldb,
 164                      FILE *f, struct ldb_message **msgs, int count)
 165 {
 166         int i;
 167
 168         fprintf(f, "# editing %d records\n", count);
 169
 170         for (i=0;i<count;i++) {
 171                 struct ldb_ldif ldif;
 172                 fprintf(f, "# record %d\n", i+1);
 173
 174                 ldif.changetype = LDB_CHANGETYPE_NONE;
 175                 ldif.msg = msgs[i];
 176
 177                 ldb_ldif_write_file(ldb, f, &ldif);
 178         }
 179
 180         return 0;
 181 }
 182
 183
 184 /*
 185   edit the ldb search results in msgs using the user selected editor
 186 */
 187 static int do_edit(struct ldb_context *ldb, struct ldb_message **msgs1, int count1,
 188                    const char *editor)
 189 {
 190         int fd, ret;
 191         FILE *f;
 192         char file_template[] = "/tmp/ldbedit.XXXXXX";
 193         char *cmd;
 194         struct ldb_ldif *ldif;
 195         struct ldb_message **msgs2 = NULL;
 196         int count2 = 0;
 197
 198         /* write out the original set of messages to a temporary
 199            file */
 200         fd = mkstemp(file_template);
 201
 202         if (fd == -1) {
 203                 perror(file_template);
 204                 return -1;
 205         }
 206
 207         f = fdopen(fd, "r+");
 208
 209         if (!f) {
 210                 perror("fopen");
 211                 close(fd);
 212                 unlink(file_template);
 213                 return -1;
 214         }
 215
 216         if (save_ldif(ldb, f, msgs1, count1) != 0) {
 217                 return -1;
 218         }
 219
 220         fclose(f);
 221
 222         cmd = talloc_asprintf(ldb, "%s %s", editor, file_template);
 223
 224         if (!cmd) {
 225                 unlink(file_template);
 226                 fprintf(stderr, "out of memory\n");
 227                 return -1;
 228         }
 229
 230         /* run the editor */
 231         ret = system(cmd);
 232         talloc_free(cmd);
 233
 234         if (ret != 0) {
 235                 unlink(file_template);
 236                 fprintf(stderr, "edit with %s failed\n", editor);
 237                 return -1;
 238         }
 239
 240         /* read the resulting ldif into msgs2 */
 241         f = fopen(file_template, "r");
 242         if (!f) {
 243                 perror(file_template);
 244                 return -1;
 245         }
 246
 247         while ((ldif = ldb_ldif_read_file(ldb, f))) {
 248                 msgs2 = talloc_realloc(ldb, msgs2, struct ldb_message *, count2+1);
 249                 if (!msgs2) {
 250                         fprintf(stderr, "out of memory");
 251                         return -1;
 252                 }
 253                 msgs2[count2++] = ldif->msg;
 254         }
 255
 256         fclose(f);
 257         unlink(file_template);
 258
 259         return merge_edits(ldb, msgs1, count1, msgs2, count2);
 260 }
 261
 262 static void usage(void)
 263 {
 264         printf("Usage: ldbedit <options> <expression> <attributes ...>\n");
 265         printf("Options:\n");
 266         printf("  -H ldb_url       choose the database (or $LDB_URL)\n");
 267         printf("  -s base|sub|one  choose search scope\n");
 268         printf("  -b basedn        choose baseDN\n");
 269         printf("  -a               edit all records (expression 'objectclass=*')\n");
 270         printf("  -e editor        choose editor (or $VISUAL or $EDITOR)\n");
 271         printf("  -v               verbose mode\n");
 272         exit(1);
 273 }
 274
 275 int main(int argc, const char **argv)
 276 {
 277         struct ldb_context *ldb;
 278         struct ldb_result *result = NULL;
 279         struct ldb_dn *basedn = NULL;
 280         int ret;
 281         const char *expression = "(|(objectClass=*)(distinguishedName=*))";
 282         const char * const * attrs = NULL;
 283
 284         ldb_global_init();
 285
 286         ldb = ldb_init(NULL);
 287
 288         options = ldb_cmdline_process(ldb, argc, argv, usage);
 289
 290         /* the check for '=' is for compatibility with ldapsearch */
 291         if (options->argc > 0 &&
 292             strchr(options->argv[0], '=')) {
 293                 expression = options->argv[0];
 294                 options->argv++;
 295                 options->argc--;
 296         }
 297
 298         if (options->argc > 0) {
 299                 attrs = (const char * const *)(options->argv);
 300         }
 301
 302         if (options->basedn != NULL) {
 303                 basedn = ldb_dn_explode(ldb, options->basedn);
 304                 if (basedn == NULL) {
 305                         printf("Invalid Base DN format\n");
 306                         exit(1);
 307                 }
 308         }
 309
 310         ret = ldb_search(ldb, basedn, options->scope, expression, attrs, &result);
 311         if (ret != LDB_SUCCESS) {
 312                 printf("search failed - %s\n", ldb_errstring(ldb));
 313                 exit(1);
 314         }
 315
 316         if (result->count == 0) {
 317                 printf("no matching records - cannot edit\n");
 318                 return 0;
 319         }
 320
 321         do_edit(ldb, result->msgs, result->count, options->editor);
 322
 323         if (result) {
 324                 ret = talloc_free(result);
 325                 if (ret == -1) {
 326                         fprintf(stderr, "talloc_free failed\n");
 327                         exit(1);
 328                 }
 329         }
 330
 331         talloc_free(ldb);
 332         return 0;
 333 }