source: trunk/server/source4/lib/ldb/tools/ldbedit.c

Last change on this file was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 8.6 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
34#include "replace.h"
35#include "system/filesys.h"
36#include "system/time.h"
37#include "system/filesys.h"
38#include "ldb.h"
39#include "tools/cmdline.h"
40#include "tools/ldbutil.h"
41
42static struct ldb_cmdline *options;
43
44/*
45 debug routine
46*/
47static void ldif_write_msg(struct ldb_context *ldb,
48 FILE *f,
49 enum ldb_changetype changetype,
50 struct ldb_message *msg)
51{
52 struct ldb_ldif ldif;
53 ldif.changetype = changetype;
54 ldif.msg = msg;
55 ldb_ldif_write_file(ldb, f, &ldif);
56}
57
58/*
59 modify a database record so msg1 becomes msg2
60 returns the number of modified elements
61*/
62static int modify_record(struct ldb_context *ldb,
63 struct ldb_message *msg1,
64 struct ldb_message *msg2,
65 struct ldb_control **req_ctrls)
66{
67 int ret;
68 struct ldb_message *mod;
69
70 if (ldb_msg_difference(ldb, ldb, msg1, msg2, &mod) != LDB_SUCCESS) {
71 fprintf(stderr, "Failed to calculate message differences\n");
72 return -1;
73 }
74
75 ret = mod->num_elements;
76 if (ret == 0) {
77 goto done;
78 }
79
80 if (options->verbose > 0) {
81 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_MODIFY, mod);
82 }
83
84 if (ldb_modify_ctrl(ldb, mod, req_ctrls) != LDB_SUCCESS) {
85 fprintf(stderr, "failed to modify %s - %s\n",
86 ldb_dn_get_linearized(msg1->dn), ldb_errstring(ldb));
87 ret = -1;
88 goto done;
89 }
90
91done:
92 talloc_free(mod);
93 return ret;
94}
95
96/*
97 find dn in msgs[]
98*/
99static struct ldb_message *msg_find(struct ldb_context *ldb,
100 struct ldb_message **msgs,
101 unsigned int count,
102 struct ldb_dn *dn)
103{
104 unsigned int i;
105 for (i=0;i<count;i++) {
106 if (ldb_dn_compare(dn, msgs[i]->dn) == 0) {
107 return msgs[i];
108 }
109 }
110 return NULL;
111}
112
113/*
114 merge the changes in msgs2 into the messages from msgs1
115*/
116static int merge_edits(struct ldb_context *ldb,
117 struct ldb_message **msgs1, unsigned int count1,
118 struct ldb_message **msgs2, unsigned int count2)
119{
120 unsigned int i;
121 struct ldb_message *msg;
122 int ret;
123 unsigned int adds=0, modifies=0, deletes=0;
124 struct ldb_control **req_ctrls = ldb_parse_control_strings(ldb, ldb, (const char **)options->controls);
125 if (options->controls != NULL && req_ctrls == NULL) {
126 fprintf(stderr, "parsing controls failed: %s\n", ldb_errstring(ldb));
127 return -1;
128 }
129
130 if (ldb_transaction_start(ldb) != LDB_SUCCESS) {
131 fprintf(stderr, "Failed to start transaction: %s\n", ldb_errstring(ldb));
132 return -1;
133 }
134
135 /* do the adds and modifies */
136 for (i=0;i<count2;i++) {
137 msg = msg_find(ldb, msgs1, count1, msgs2[i]->dn);
138 if (!msg) {
139 if (options->verbose > 0) {
140 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_ADD, msgs2[i]);
141 }
142 if (ldb_add_ctrl(ldb, msgs2[i], req_ctrls) != LDB_SUCCESS) {
143 fprintf(stderr, "failed to add %s - %s\n",
144 ldb_dn_get_linearized(msgs2[i]->dn),
145 ldb_errstring(ldb));
146 ldb_transaction_cancel(ldb);
147 return -1;
148 }
149 adds++;
150 } else {
151 ret = modify_record(ldb, msg, msgs2[i], req_ctrls);
152 if (ret != -1) {
153 modifies += (unsigned int) ret;
154 } else {
155 return -1;
156 }
157 }
158 }
159
160 /* do the deletes */
161 for (i=0;i<count1;i++) {
162 msg = msg_find(ldb, msgs2, count2, msgs1[i]->dn);
163 if (!msg) {
164 if (options->verbose > 0) {
165 ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_DELETE, msgs1[i]);
166 }
167 if (ldb_delete_ctrl(ldb, msgs1[i]->dn, req_ctrls) != LDB_SUCCESS) {
168 fprintf(stderr, "failed to delete %s - %s\n",
169 ldb_dn_get_linearized(msgs1[i]->dn),
170 ldb_errstring(ldb));
171 ldb_transaction_cancel(ldb);
172 return -1;
173 }
174 deletes++;
175 }
176 }
177
178 if (ldb_transaction_commit(ldb) != LDB_SUCCESS) {
179 fprintf(stderr, "Failed to commit transaction: %s\n", ldb_errstring(ldb));
180 return -1;
181 }
182
183 printf("# %u adds %u modifies %u deletes\n", adds, modifies, deletes);
184
185 return 0;
186}
187
188/*
189 save a set of messages as ldif to a file
190*/
191static int save_ldif(struct ldb_context *ldb,
192 FILE *f, struct ldb_message **msgs, unsigned int count)
193{
194 unsigned int i;
195
196 fprintf(f, "# editing %u records\n", count);
197
198 for (i=0;i<count;i++) {
199 struct ldb_ldif ldif;
200 fprintf(f, "# record %u\n", i+1);
201
202 ldif.changetype = LDB_CHANGETYPE_NONE;
203 ldif.msg = msgs[i];
204
205 ldb_ldif_write_file(ldb, f, &ldif);
206 }
207
208 return 0;
209}
210
211
212/*
213 edit the ldb search results in msgs using the user selected editor
214*/
215static int do_edit(struct ldb_context *ldb, struct ldb_message **msgs1,
216 unsigned int count1, const char *editor)
217{
218 int fd, ret;
219 FILE *f;
220 char file_template[] = "/tmp/ldbedit.XXXXXX";
221 char *cmd;
222 struct ldb_ldif *ldif;
223 struct ldb_message **msgs2 = NULL;
224 unsigned int count2 = 0;
225
226 /* write out the original set of messages to a temporary
227 file */
228 fd = mkstemp(file_template);
229
230 if (fd == -1) {
231 perror(file_template);
232 return -1;
233 }
234
235 f = fdopen(fd, "r+");
236
237 if (!f) {
238 perror("fopen");
239 close(fd);
240 unlink(file_template);
241 return -1;
242 }
243
244 if (save_ldif(ldb, f, msgs1, count1) != 0) {
245 return -1;
246 }
247
248 fclose(f);
249
250 cmd = talloc_asprintf(ldb, "%s %s", editor, file_template);
251
252 if (!cmd) {
253 unlink(file_template);
254 fprintf(stderr, "out of memory\n");
255 return -1;
256 }
257
258 /* run the editor */
259 ret = system(cmd);
260 talloc_free(cmd);
261
262 if (ret != 0) {
263 unlink(file_template);
264 fprintf(stderr, "edit with %s failed\n", editor);
265 return -1;
266 }
267
268 /* read the resulting ldif into msgs2 */
269 f = fopen(file_template, "r");
270 if (!f) {
271 perror(file_template);
272 return -1;
273 }
274
275 while ((ldif = ldb_ldif_read_file(ldb, f))) {
276 msgs2 = talloc_realloc(ldb, msgs2, struct ldb_message *, count2+1);
277 if (!msgs2) {
278 fprintf(stderr, "out of memory");
279 return -1;
280 }
281 msgs2[count2++] = ldif->msg;
282 }
283
284 fclose(f);
285 unlink(file_template);
286
287 return merge_edits(ldb, msgs1, count1, msgs2, count2);
288}
289
290static void usage(struct ldb_context *ldb)
291{
292 printf("Usage: ldbedit <options> <expression> <attributes ...>\n");
293 ldb_cmdline_help(ldb, "ldbedit", stdout);
294 exit(LDB_ERR_OPERATIONS_ERROR);
295}
296
297int main(int argc, const char **argv)
298{
299 struct ldb_context *ldb;
300 struct ldb_result *result = NULL;
301 struct ldb_dn *basedn = NULL;
302 int ret;
303 const char *expression = "(|(objectClass=*)(distinguishedName=*))";
304 const char * const * attrs = NULL;
305 TALLOC_CTX *mem_ctx = talloc_new(NULL);
306 struct ldb_control **req_ctrls;
307
308 ldb = ldb_init(mem_ctx, NULL);
309 if (ldb == NULL) {
310 return LDB_ERR_OPERATIONS_ERROR;
311 }
312
313 options = ldb_cmdline_process(ldb, argc, argv, usage);
314
315 /* the check for '=' is for compatibility with ldapsearch */
316 if (options->argc > 0 &&
317 strchr(options->argv[0], '=')) {
318 expression = options->argv[0];
319 options->argv++;
320 options->argc--;
321 }
322
323 if (options->argc > 0) {
324 attrs = (const char * const *)(options->argv);
325 }
326
327 if (options->basedn != NULL) {
328 basedn = ldb_dn_new(ldb, ldb, options->basedn);
329 if (basedn == NULL) {
330 return LDB_ERR_OPERATIONS_ERROR;
331 }
332 }
333
334 req_ctrls = ldb_parse_control_strings(ldb, ldb, (const char **)options->controls);
335 if (options->controls != NULL && req_ctrls== NULL) {
336 printf("parsing controls failed: %s\n", ldb_errstring(ldb));
337 return LDB_ERR_OPERATIONS_ERROR;
338 }
339
340 ret = ldb_search_ctrl(ldb, ldb, &result, basedn, options->scope, attrs, req_ctrls, "%s", expression);
341 if (ret != LDB_SUCCESS) {
342 printf("search failed - %s\n", ldb_errstring(ldb));
343 return ret;
344 }
345
346 if (result->count == 0) {
347 printf("no matching records - cannot edit\n");
348 talloc_free(mem_ctx);
349 return LDB_SUCCESS;
350 }
351
352 ret = do_edit(ldb, result->msgs, result->count, options->editor);
353
354 talloc_free(mem_ctx);
355
356 return ret == 0 ? LDB_SUCCESS : LDB_ERR_OPERATIONS_ERROR;
357}
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