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Copyright (C) Andrew Tridgell 2004
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** NOTE! The following LGPL license applies to the ldb
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** library. This does NOT imply that all of Samba is released
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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* Description: utility for ldb database editing
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* Author: Andrew Tridgell
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#include "ldb_includes.h"
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#include "tools/cmdline.h"
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static struct ldb_cmdline *options;
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static void ldif_write_msg(struct ldb_context *ldb,
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enum ldb_changetype changetype,
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struct ldb_message *msg)
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ldif.changetype = changetype;
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ldb_ldif_write_file(ldb, f, &ldif);
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modify a database record so msg1 becomes msg2
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returns the number of modified elements
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static int modify_record(struct ldb_context *ldb,
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struct ldb_message *msg1,
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struct ldb_message *msg2)
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struct ldb_message *mod;
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mod = ldb_msg_diff(ldb, msg1, msg2);
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fprintf(stderr, "Failed to calculate message differences\n");
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if (mod->num_elements == 0) {
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if (options->verbose > 0) {
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ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_MODIFY, mod);
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if (ldb_modify(ldb, mod) != 0) {
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fprintf(stderr, "failed to modify %s - %s\n",
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ldb_dn_get_linearized(msg1->dn), ldb_errstring(ldb));
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return mod->num_elements;
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static struct ldb_message *msg_find(struct ldb_context *ldb,
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struct ldb_message **msgs,
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for (i=0;i<count;i++) {
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if (ldb_dn_compare(dn, msgs[i]->dn) == 0) {
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merge the changes in msgs2 into the messages from msgs1
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static int merge_edits(struct ldb_context *ldb,
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struct ldb_message **msgs1, int count1,
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struct ldb_message **msgs2, int count2)
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struct ldb_message *msg;
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int adds=0, modifies=0, deletes=0;
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if (ldb_transaction_start(ldb) != 0) {
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fprintf(stderr, "Failed to start transaction: %s\n", ldb_errstring(ldb));
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/* do the adds and modifies */
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for (i=0;i<count2;i++) {
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msg = msg_find(ldb, msgs1, count1, msgs2[i]->dn);
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if (options->verbose > 0) {
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ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_ADD, msgs2[i]);
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if (ldb_add(ldb, msgs2[i]) != 0) {
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fprintf(stderr, "failed to add %s - %s\n",
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ldb_dn_get_linearized(msgs2[i]->dn),
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if (modify_record(ldb, msg, msgs2[i]) > 0) {
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for (i=0;i<count1;i++) {
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msg = msg_find(ldb, msgs2, count2, msgs1[i]->dn);
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if (options->verbose > 0) {
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ldif_write_msg(ldb, stdout, LDB_CHANGETYPE_DELETE, msgs1[i]);
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if (ldb_delete(ldb, msgs1[i]->dn) != 0) {
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fprintf(stderr, "failed to delete %s - %s\n",
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ldb_dn_get_linearized(msgs1[i]->dn),
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if (ldb_transaction_commit(ldb) != 0) {
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fprintf(stderr, "Failed to commit transaction: %s\n", ldb_errstring(ldb));
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printf("# %d adds %d modifies %d deletes\n", adds, modifies, deletes);
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save a set of messages as ldif to a file
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static int save_ldif(struct ldb_context *ldb,
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FILE *f, struct ldb_message **msgs, int count)
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fprintf(f, "# editing %d records\n", count);
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for (i=0;i<count;i++) {
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struct ldb_ldif ldif;
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fprintf(f, "# record %d\n", i+1);
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ldif.changetype = LDB_CHANGETYPE_NONE;
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ldb_ldif_write_file(ldb, f, &ldif);
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edit the ldb search results in msgs using the user selected editor
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static int do_edit(struct ldb_context *ldb, struct ldb_message **msgs1, int count1,
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char file_template[] = "/tmp/ldbedit.XXXXXX";
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struct ldb_ldif *ldif;
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struct ldb_message **msgs2 = NULL;
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/* write out the original set of messages to a temporary
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fd = mkstemp(file_template);
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perror(file_template);
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f = fdopen(fd, "r+");
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unlink(file_template);
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if (save_ldif(ldb, f, msgs1, count1) != 0) {
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cmd = talloc_asprintf(ldb, "%s %s", editor, file_template);
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unlink(file_template);
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fprintf(stderr, "out of memory\n");
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unlink(file_template);
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fprintf(stderr, "edit with %s failed\n", editor);
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/* read the resulting ldif into msgs2 */
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f = fopen(file_template, "r");
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perror(file_template);
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while ((ldif = ldb_ldif_read_file(ldb, f))) {
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msgs2 = talloc_realloc(ldb, msgs2, struct ldb_message *, count2+1);
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fprintf(stderr, "out of memory");
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msgs2[count2++] = ldif->msg;
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unlink(file_template);
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return merge_edits(ldb, msgs1, count1, msgs2, count2);
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static void usage(void)
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printf("Usage: ldbedit <options> <expression> <attributes ...>\n");
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printf("Options:\n");
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printf(" -H ldb_url choose the database (or $LDB_URL)\n");
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printf(" -s base|sub|one choose search scope\n");
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printf(" -b basedn choose baseDN\n");
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printf(" -a edit all records (expression 'objectclass=*')\n");
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printf(" -e editor choose editor (or $VISUAL or $EDITOR)\n");
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printf(" -v verbose mode\n");
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int main(int argc, const char **argv)
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struct ldb_context *ldb;
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struct ldb_result *result = NULL;
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struct ldb_dn *basedn = NULL;
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const char *expression = "(|(objectClass=*)(distinguishedName=*))";
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const char * const * attrs = NULL;
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ldb = ldb_init(NULL, NULL);
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options = ldb_cmdline_process(ldb, argc, argv, usage);
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/* the check for '=' is for compatibility with ldapsearch */
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if (options->argc > 0 &&
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strchr(options->argv[0], '=')) {
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expression = options->argv[0];
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if (options->argc > 0) {
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attrs = (const char * const *)(options->argv);
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if (options->basedn != NULL) {
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basedn = ldb_dn_new(ldb, ldb, options->basedn);
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if ( ! ldb_dn_validate(basedn)) {
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printf("Invalid Base DN format\n");
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ret = ldb_search(ldb, ldb, &result, basedn, options->scope, attrs, "%s", expression);
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if (ret != LDB_SUCCESS) {
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printf("search failed - %s\n", ldb_errstring(ldb));
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if (result->count == 0) {
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printf("no matching records - cannot edit\n");
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do_edit(ldb, result->msgs, result->count, options->editor);
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ret = talloc_free(result);
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fprintf(stderr, "talloc_free failed\n");