source: branches/samba-3.5.x/source4/lib/ldb/tools/ldbedit.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 7.2 KB
Line 
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 3 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, see <http://www.gnu.org/licenses/>.
22*/
23
24/*
25 * Name: ldb
26 *
27 * Component: ldbedit
28 *
29 * Description: utility for ldb database editing
30 *
31 * Author: Andrew Tridgell
32 */
33#include "ldb_includes.h"
34#include "ldb.h"
35#include "tools/cmdline.h"
36
37static struct ldb_cmdline *options;
38
39/*
40 debug routine
41*/
42static void ldif_write_msg(struct ldb_context *ldb,
43 FILE *f,
44 enum ldb_changetype changetype,
45 struct ldb_message *msg)
46{
47 struct ldb_ldif ldif;
48 ldif.changetype = changetype;
49 ldif.msg = msg;
50 ldb_ldif_write_file(ldb, f, &ldif);
51}
52
53/*
54 modify a database record so msg1 becomes msg2
55 returns the number of modified elements
56*/
57static int modify_record(struct ldb_context *ldb,
58 struct ldb_message *msg1,
59 struct ldb_message *msg2)
60{
61 struct ldb_message *mod;
62
63 mod = ldb_msg_diff(ldb, msg1, msg2);
64 if (mod == NULL) {
65 fprintf(stderr, "Failed to calculate message differences\n");
66 return -1;
67 }
68
69 if (mod->num_elements == 0) {
70 return 0;
71 }
72
73 if (options->verbose > 0) {
74 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_MODIFY, mod);
75 }
76
77 if (ldb_modify(ldb, mod) != 0) {
78 fprintf(stderr, "failed to modify %s - %s\n",
79 ldb_dn_get_linearized(msg1->dn), ldb_errstring(ldb));
80 return -1;
81 }
82
83 return mod->num_elements;
84}
85
86/*
87 find dn in msgs[]
88*/
89static struct ldb_message *msg_find(struct ldb_context *ldb,
90 struct ldb_message **msgs,
91 int count,
92 struct ldb_dn *dn)
93{
94 int i;
95 for (i=0;i<count;i++) {
96 if (ldb_dn_compare(dn, msgs[i]->dn) == 0) {
97 return msgs[i];
98 }
99 }
100 return NULL;
101}
102
103/*
104 merge the changes in msgs2 into the messages from msgs1
105*/
106static int merge_edits(struct ldb_context *ldb,
107 struct ldb_message **msgs1, int count1,
108 struct ldb_message **msgs2, int count2)
109{
110 int i;
111 struct ldb_message *msg;
112 int ret = 0;
113 int adds=0, modifies=0, deletes=0;
114
115 if (ldb_transaction_start(ldb) != 0) {
116 fprintf(stderr, "Failed to start transaction: %s\n", ldb_errstring(ldb));
117 return -1;
118 }
119
120 /* do the adds and modifies */
121 for (i=0;i<count2;i++) {
122 msg = msg_find(ldb, msgs1, count1, msgs2[i]->dn);
123 if (!msg) {
124 if (options->verbose > 0) {
125 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_ADD, msgs2[i]);
126 }
127 if (ldb_add(ldb, msgs2[i]) != 0) {
128 fprintf(stderr, "failed to add %s - %s\n",
129 ldb_dn_get_linearized(msgs2[i]->dn),
130 ldb_errstring(ldb));
131 ldb_transaction_cancel(ldb);
132 return -1;
133 }
134 adds++;
135 } else {
136 if (modify_record(ldb, msg, msgs2[i]) > 0) {
137 modifies++;
138 }
139 }
140 }
141
142 /* do the deletes */
143 for (i=0;i<count1;i++) {
144 msg = msg_find(ldb, msgs2, count2, msgs1[i]->dn);
145 if (!msg) {
146 if (options->verbose > 0) {
147 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_DELETE, msgs1[i]);
148 }
149 if (ldb_delete(ldb, msgs1[i]->dn) != 0) {
150 fprintf(stderr, "failed to delete %s - %s\n",
151 ldb_dn_get_linearized(msgs1[i]->dn),
152 ldb_errstring(ldb));
153 ldb_transaction_cancel(ldb);
154 return -1;
155 }
156 deletes++;
157 }
158 }
159
160 if (ldb_transaction_commit(ldb) != 0) {
161 fprintf(stderr, "Failed to commit transaction: %s\n", ldb_errstring(ldb));
162 return -1;
163 }
164
165 printf("# %d adds %d modifies %d deletes\n", adds, modifies, deletes);
166
167 return ret;
168}
169
170/*
171 save a set of messages as ldif to a file
172*/
173static int save_ldif(struct ldb_context *ldb,
174 FILE *f, struct ldb_message **msgs, int count)
175{
176 int i;
177
178 fprintf(f, "# editing %d records\n", count);
179
180 for (i=0;i<count;i++) {
181 struct ldb_ldif ldif;
182 fprintf(f, "# record %d\n", i+1);
183
184 ldif.changetype = LDB_CHANGETYPE_NONE;
185 ldif.msg = msgs[i];
186
187 ldb_ldif_write_file(ldb, f, &ldif);
188 }
189
190 return 0;
191}
192
193
194/*
195 edit the ldb search results in msgs using the user selected editor
196*/
197static int do_edit(struct ldb_context *ldb, struct ldb_message **msgs1, int count1,
198 const char *editor)
199{
200 int fd, ret;
201 FILE *f;
202 char file_template[] = "/tmp/ldbedit.XXXXXX";
203 char *cmd;
204 struct ldb_ldif *ldif;
205 struct ldb_message **msgs2 = NULL;
206 int count2 = 0;
207
208 /* write out the original set of messages to a temporary
209 file */
210 fd = mkstemp(file_template);
211
212 if (fd == -1) {
213 perror(file_template);
214 return -1;
215 }
216
217 f = fdopen(fd, "r+");
218
219 if (!f) {
220 perror("fopen");
221 close(fd);
222 unlink(file_template);
223 return -1;
224 }
225
226 if (save_ldif(ldb, f, msgs1, count1) != 0) {
227 return -1;
228 }
229
230 fclose(f);
231
232 cmd = talloc_asprintf(ldb, "%s %s", editor, file_template);
233
234 if (!cmd) {
235 unlink(file_template);
236 fprintf(stderr, "out of memory\n");
237 return -1;
238 }
239
240 /* run the editor */
241 ret = system(cmd);
242 talloc_free(cmd);
243
244 if (ret != 0) {
245 unlink(file_template);
246 fprintf(stderr, "edit with %s failed\n", editor);
247 return -1;
248 }
249
250 /* read the resulting ldif into msgs2 */
251 f = fopen(file_template, "r");
252 if (!f) {
253 perror(file_template);
254 return -1;
255 }
256
257 while ((ldif = ldb_ldif_read_file(ldb, f))) {
258 msgs2 = talloc_realloc(ldb, msgs2, struct ldb_message *, count2+1);
259 if (!msgs2) {
260 fprintf(stderr, "out of memory");
261 return -1;
262 }
263 msgs2[count2++] = ldif->msg;
264 }
265
266 fclose(f);
267 unlink(file_template);
268
269 return merge_edits(ldb, msgs1, count1, msgs2, count2);
270}
271
272static void usage(void)
273{
274 printf("Usage: ldbedit <options> <expression> <attributes ...>\n");
275 ldb_cmdline_help("ldbedit", stdout);
276 exit(1);
277}
278
279int main(int argc, const char **argv)
280{
281 struct ldb_context *ldb;
282 struct ldb_result *result = NULL;
283 struct ldb_dn *basedn = NULL;
284 int ret;
285 const char *expression = "(|(objectClass=*)(distinguishedName=*))";
286 const char * const * attrs = NULL;
287
288 ldb = ldb_init(NULL, NULL);
289
290 options = ldb_cmdline_process(ldb, argc, argv, usage);
291
292 /* the check for '=' is for compatibility with ldapsearch */
293 if (options->argc > 0 &&
294 strchr(options->argv[0], '=')) {
295 expression = options->argv[0];
296 options->argv++;
297 options->argc--;
298 }
299
300 if (options->argc > 0) {
301 attrs = (const char * const *)(options->argv);
302 }
303
304 if (options->basedn != NULL) {
305 basedn = ldb_dn_new(ldb, ldb, options->basedn);
306 if ( ! ldb_dn_validate(basedn)) {
307 printf("Invalid Base DN format\n");
308 exit(1);
309 }
310 }
311
312 ret = ldb_search(ldb, ldb, &result, basedn, options->scope, attrs, "%s", expression);
313 if (ret != LDB_SUCCESS) {
314 printf("search failed - %s\n", ldb_errstring(ldb));
315 exit(1);
316 }
317
318 if (result->count == 0) {
319 printf("no matching records - cannot edit\n");
320 return 0;
321 }
322
323 do_edit(ldb, result->msgs, result->count, options->editor);
324
325 if (result) {
326 ret = talloc_free(result);
327 if (ret == -1) {
328 fprintf(stderr, "talloc_free failed\n");
329 exit(1);
330 }
331 }
332
333 talloc_free(ldb);
334 return 0;
335}
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