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-rw-r--r--lib/ldb/tools/ldbdump.c383
1 files changed, 383 insertions, 0 deletions
diff --git a/lib/ldb/tools/ldbdump.c b/lib/ldb/tools/ldbdump.c
new file mode 100644
index 0000000..5cdb7d8
--- /dev/null
+++ b/lib/ldb/tools/ldbdump.c
@@ -0,0 +1,383 @@
+/*
+ Unix SMB/CIFS implementation.
+ simple ldb tdb dump util
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Andrew Bartlett 2012
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/locale.h"
+#include "system/time.h"
+#include "system/filesys.h"
+#include "system/wait.h"
+#include <tdb.h>
+#include <ldb.h>
+#include <ldb_private.h>
+
+#ifdef HAVE_LMDB
+#include <lmdb.h>
+#endif /* ifdef HAVE_LMDB */
+
+
+static struct ldb_context *ldb;
+bool show_index = false;
+bool validate_contents = false;
+
+static void print_data(TDB_DATA d)
+{
+ unsigned char *p = (unsigned char *)d.dptr;
+ int len = d.dsize;
+ while (len--) {
+ if (isprint(*p) && !strchr("\"\\", *p)) {
+ fputc(*p, stdout);
+ } else {
+ printf("\\%02X", *p);
+ }
+ p++;
+ }
+}
+
+static unsigned int pull_uint32(uint8_t *p)
+{
+ return p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24);
+}
+
+
+static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA _dbuf, void *state)
+{
+ int ret, i, j;
+ struct ldb_dn *dn = state;
+ struct ldb_message *msg = ldb_msg_new(NULL);
+ struct ldb_val dbuf = {
+ .data = _dbuf.dptr,
+ .length = _dbuf.dsize,
+ };
+ struct ldb_ldif ldif = {
+ .msg = msg,
+ .changetype = LDB_CHANGETYPE_NONE
+ };
+ if (!msg) {
+ return -1;
+ }
+
+ ret = ldb_unpack_data(ldb, &dbuf, msg);
+ if (ret != 0) {
+ fprintf(stderr, "Failed to parse record %*.*s as an LDB record\n", (int)key.dsize, (int)key.dsize, (char *)key.dptr);
+ TALLOC_FREE(msg);
+ return 0;
+ }
+
+ if (dn && ldb_dn_compare(msg->dn, dn) != 0) {
+ TALLOC_FREE(msg);
+ return 0;
+ }
+
+ if (!show_index && ldb_dn_is_special(msg->dn)) {
+ const char *dn_lin = ldb_dn_get_linearized(msg->dn);
+ if ((strcmp(dn_lin, "@BASEINFO") == 0) || (strncmp(dn_lin, "@INDEX:", strlen("@INDEX:")) == 0)) {
+ /*
+ the user has asked not to show index
+ records. Also exclude BASEINFO as it
+ contains meta-data which will be re-created
+ if this database is restored
+ */
+ TALLOC_FREE(msg);
+ return 0;
+ }
+ }
+
+ printf("# key: ");
+ print_data(key);
+ printf("\n# pack format: %#010x\n", pull_uint32(_dbuf.dptr));
+
+ if (!validate_contents || ldb_dn_is_special(msg->dn)) {
+ ldb_ldif_write_file(ldb, stdout, &ldif);
+ TALLOC_FREE(msg);
+ return 0;
+ }
+
+ for (i=0;i<msg->num_elements;i++) {
+ const struct ldb_schema_attribute *a;
+
+ a = ldb_schema_attribute_by_name(ldb, msg->elements[i].name);
+ for (j=0;j<msg->elements[i].num_values;j++) {
+ struct ldb_val v;
+ ret = a->syntax->ldif_write_fn(ldb, msg, &msg->elements[i].values[j], &v);
+ if (ret != 0) {
+ v = msg->elements[i].values[j];
+ if (ldb_should_b64_encode(ldb, &v)) {
+ v.data = (uint8_t *)ldb_base64_encode(ldb, (char *)v.data, v.length);
+ v.length = strlen((char *)v.data);
+ }
+ fprintf(stderr, "On %s element %s value %d (%*.*s) failed to convert to LDIF correctly, skipping possibly corrupt record\n",
+ ldb_dn_get_linearized(msg->dn),
+ msg->elements[i].name,
+ j, (int)v.length, (int)v.length,
+ v.data);
+ TALLOC_FREE(msg);
+ return 0;
+ }
+ }
+ }
+ ldb_ldif_write_file(ldb, stdout, &ldif);
+ TALLOC_FREE(msg);
+
+ return 0;
+}
+
+static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
+ const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
+
+static void log_stderr(struct tdb_context *tdb, enum tdb_debug_level level,
+ const char *fmt, ...)
+{
+ va_list ap;
+ const char *name = tdb_name(tdb);
+ const char *prefix = "";
+
+ if (!name)
+ name = "unnamed";
+
+ switch (level) {
+ case TDB_DEBUG_ERROR:
+ prefix = "ERROR: ";
+ break;
+ case TDB_DEBUG_WARNING:
+ prefix = "WARNING: ";
+ break;
+ case TDB_DEBUG_TRACE:
+ return;
+
+ default:
+ case TDB_DEBUG_FATAL:
+ prefix = "FATAL: ";
+ break;
+ }
+
+ va_start(ap, fmt);
+ fprintf(stderr, "tdb(%s): %s", name, prefix);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+}
+
+static void emergency_walk(TDB_DATA key, TDB_DATA dbuf, void *keyname)
+{
+ traverse_fn(NULL, key, dbuf, keyname);
+}
+
+static int dump_tdb(const char *fname, struct ldb_dn *dn, bool emergency)
+{
+ TDB_CONTEXT *tdb;
+ struct tdb_logging_context logfn = {
+ .log_fn = log_stderr,
+ };
+
+ tdb = tdb_open_ex(fname, 0, 0, O_RDONLY, 0, &logfn, NULL);
+ if (!tdb) {
+ fprintf(stderr, "Failed to open %s\n", fname);
+ return 1;
+ }
+
+ if (emergency) {
+ return tdb_rescue(tdb, emergency_walk, dn) == 0;
+ }
+ return tdb_traverse(tdb, traverse_fn, dn) == -1 ? 1 : 0;
+}
+
+#ifdef HAVE_LMDB
+static int dump_lmdb(const char *fname, struct ldb_dn *dn, bool emergency)
+{
+ int ret;
+ struct MDB_env *env = NULL;
+ struct MDB_txn *txn = NULL;
+ MDB_dbi dbi;
+ struct MDB_cursor *cursor = NULL;
+ struct MDB_val key;
+ struct MDB_val data;
+
+ ret = mdb_env_create(&env);
+ if (ret != 0) {
+ fprintf(stderr,
+ "Could not create MDB environment: (%d) %s\n",
+ ret,
+ mdb_strerror(ret));
+ goto close_env;
+ }
+
+ ret = mdb_env_open(env,
+ fname,
+ MDB_NOSUBDIR|MDB_NOTLS|MDB_RDONLY,
+ 0600);
+ if (ret != 0) {
+ fprintf(stderr,
+ "Could not open environment for %s: (%d) %s\n",
+ fname,
+ ret,
+ mdb_strerror(ret));
+ goto close_env;
+ }
+
+ ret = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn);
+ if (ret != 0) {
+ fprintf(stderr,
+ "Could not start transaction: (%d) %s\n",
+ ret,
+ mdb_strerror(ret));
+ goto close_env;
+ }
+
+ ret = mdb_dbi_open(txn, NULL, 0, &dbi);
+ if (ret != 0) {
+ fprintf(stderr,
+ "Could not open database: (%d) %s\n",
+ ret,
+ mdb_strerror(ret));
+ goto close_txn;
+ }
+
+ ret = mdb_cursor_open(txn, dbi, &cursor);
+ if (ret != 0) {
+ fprintf(stderr,
+ "Could not open cursor: (%d) %s\n",
+ ret,
+ mdb_strerror(ret));
+ goto close_txn;
+ }
+
+ ret = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
+ if (ret != 0 && ret != MDB_NOTFOUND) {
+ fprintf(stderr,
+ "Could not find first record: (%d) %s\n",
+ ret,
+ mdb_strerror(ret));
+ goto close_cursor;
+ }
+ while (ret != MDB_NOTFOUND) {
+ struct TDB_DATA tkey = {
+ .dptr = key.mv_data,
+ .dsize = key.mv_size
+ };
+ struct TDB_DATA tdata = {
+ .dptr = data.mv_data,
+ .dsize = data.mv_size
+ };
+ traverse_fn(NULL, tkey, tdata, dn);
+ ret = mdb_cursor_get(cursor, &key, &data, MDB_NEXT);
+ if (ret != 0 && ret != MDB_NOTFOUND) {
+ fprintf(stderr,
+ "Could not read next record: (%d) %s\n",
+ ret,
+ mdb_strerror(ret));
+ goto close_cursor;
+ }
+ }
+ ret = 0;
+
+close_cursor:
+ mdb_cursor_close(cursor);
+close_txn:
+ mdb_txn_commit(txn);
+close_env:
+ mdb_env_close(env);
+
+ if (ret != 0) {
+ return 1;
+ }
+ return 0;
+
+}
+#else
+static int dump_lmdb(const char *fname, struct ldb_dn *dn, bool emergency)
+{
+ /* not built with lmdb support */
+ return 1;
+}
+#endif /* #ifdef HAVE_LMDB */
+
+static void usage( void)
+{
+ printf( "Usage: ldbdump [options] <filename>\n\n");
+ printf( " -h this help message\n");
+ printf( " -d DN dumps DN only\n");
+ printf( " -e emergency dump, for corrupt databases\n");
+ printf( " -i include index and @BASEINFO records in dump\n");
+ printf( " -c validate contents of the records\n");
+}
+
+ int main(int argc, char *argv[])
+{
+ bool emergency = false;
+ int c, rc;
+ char *fname;
+ struct ldb_dn *dn = NULL;
+
+ ldb = ldb_init(NULL, NULL);
+ if (ldb == NULL) {
+ fprintf(stderr, "ldb: ldb_init failed()");
+ exit(1);
+ }
+
+ rc = ldb_modules_hook(ldb, LDB_MODULE_HOOK_CMDLINE_PRECONNECT);
+ if (rc != LDB_SUCCESS) {
+ fprintf(stderr, "ldb: failed to run preconnect hooks (needed to get Samba LDIF handlers): %s\n", ldb_strerror(rc));
+ exit(1);
+ }
+
+ if (argc < 2) {
+ printf("Usage: ldbdump <fname>\n");
+ exit(1);
+ }
+
+ while ((c = getopt( argc, argv, "hd:eic")) != -1) {
+ switch (c) {
+ case 'h':
+ usage();
+ exit( 0);
+ case 'd':
+ dn = ldb_dn_new(ldb, ldb, optarg);
+ if (!dn) {
+ fprintf(stderr, "ldb failed to parse %s as a DN\n", optarg);
+ exit(1);
+ }
+ break;
+ case 'e':
+ emergency = true;
+ break;
+ case 'i':
+ show_index = true;
+ break;
+ case 'c':
+ validate_contents = true;
+ break;
+ default:
+ usage();
+ exit( 1);
+ }
+ }
+
+ fname = argv[optind];
+
+ rc = dump_lmdb(fname, dn, emergency);
+ if (rc != 0) {
+ rc = dump_tdb(fname, dn, emergency);
+ if (rc != 0) {
+ fprintf(stderr, "Failed to open %s\n", fname);
+ return 1;
+ }
+ }
+ return 0;
+
+}
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