diff options
Diffstat (limited to 'ldb/ldb_tdb')
| -rw-r--r-- | ldb/ldb_tdb/ldb_cache.c | 458 | ||||
| -rw-r--r-- | ldb/ldb_tdb/ldb_index.c | 1586 | ||||
| -rw-r--r-- | ldb/ldb_tdb/ldb_pack.c | 289 | ||||
| -rw-r--r-- | ldb/ldb_tdb/ldb_search.c | 551 | ||||
| -rw-r--r-- | ldb/ldb_tdb/ldb_tdb.c | 1236 | ||||
| -rw-r--r-- | ldb/ldb_tdb/ldb_tdb.h | 134 | ||||
| -rw-r--r-- | ldb/ldb_tdb/ldb_tdb_wrap.c | 157 |
7 files changed, 0 insertions, 4411 deletions
diff --git a/ldb/ldb_tdb/ldb_cache.c b/ldb/ldb_tdb/ldb_cache.c deleted file mode 100644 index 2576e2c7b..000000000 --- a/ldb/ldb_tdb/ldb_cache.c +++ /dev/null @@ -1,458 +0,0 @@ -/* - ldb database library - - Copyright (C) Andrew Tridgell 2004 - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, see <http://www.gnu.org/licenses/>. -*/ - -/* - * Name: ldb - * - * Component: ldb tdb cache functions - * - * Description: cache special records in a ldb/tdb - * - * Author: Andrew Tridgell - */ - -#include "ldb_includes.h" - -#include "ldb_tdb.h" - -#define LTDB_FLAG_CASE_INSENSITIVE (1<<0) -#define LTDB_FLAG_INTEGER (1<<1) -#define LTDB_FLAG_HIDDEN (1<<2) - -/* valid attribute flags */ -static const struct { - const char *name; - int value; -} ltdb_valid_attr_flags[] = { - { "CASE_INSENSITIVE", LTDB_FLAG_CASE_INSENSITIVE }, - { "INTEGER", LTDB_FLAG_INTEGER }, - { "HIDDEN", LTDB_FLAG_HIDDEN }, - { "NONE", 0 }, - { NULL, 0 } -}; - - -/* - de-register any special handlers for @ATTRIBUTES -*/ -static void ltdb_attributes_unload(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - struct ldb_message *msg; - int i; - - if (ltdb->cache->attributes == NULL) { - /* no previously loaded attributes */ - return; - } - - msg = ltdb->cache->attributes; - for (i=0;i<msg->num_elements;i++) { - ldb_schema_attribute_remove(module->ldb, msg->elements[i].name); - } - - talloc_free(ltdb->cache->attributes); - ltdb->cache->attributes = NULL; -} - -/* - add up the attrib flags for a @ATTRIBUTES element -*/ -static int ltdb_attributes_flags(struct ldb_message_element *el, unsigned *v) -{ - int i; - unsigned value = 0; - for (i=0;i<el->num_values;i++) { - int j; - for (j=0;ltdb_valid_attr_flags[j].name;j++) { - if (strcmp(ltdb_valid_attr_flags[j].name, - (char *)el->values[i].data) == 0) { - value |= ltdb_valid_attr_flags[j].value; - break; - } - } - if (ltdb_valid_attr_flags[j].name == NULL) { - return -1; - } - } - *v = value; - return 0; -} - -/* - register any special handlers from @ATTRIBUTES -*/ -static int ltdb_attributes_load(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - struct ldb_message *msg = ltdb->cache->attributes; - struct ldb_dn *dn; - int i, r; - - dn = ldb_dn_new(module, module->ldb, LTDB_ATTRIBUTES); - if (dn == NULL) goto failed; - - r = ltdb_search_dn1(module, dn, msg); - talloc_free(dn); - if (r != LDB_SUCCESS && r != LDB_ERR_NO_SUCH_OBJECT) { - goto failed; - } - if (r == LDB_ERR_NO_SUCH_OBJECT) { - return 0; - } - /* mapping these flags onto ldap 'syntaxes' isn't strictly correct, - but its close enough for now */ - for (i=0;i<msg->num_elements;i++) { - unsigned flags; - const char *syntax; - const struct ldb_schema_syntax *s; - - if (ltdb_attributes_flags(&msg->elements[i], &flags) != 0) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Invalid @ATTRIBUTES element for '%s'\n", msg->elements[i].name); - goto failed; - } - switch (flags & ~LTDB_FLAG_HIDDEN) { - case 0: - syntax = LDB_SYNTAX_OCTET_STRING; - break; - case LTDB_FLAG_CASE_INSENSITIVE: - syntax = LDB_SYNTAX_DIRECTORY_STRING; - break; - case LTDB_FLAG_INTEGER: - syntax = LDB_SYNTAX_INTEGER; - break; - default: - ldb_debug(module->ldb, LDB_DEBUG_ERROR, - "Invalid flag combination 0x%x for '%s' in @ATTRIBUTES\n", - flags, msg->elements[i].name); - goto failed; - } - - s = ldb_standard_syntax_by_name(module->ldb, syntax); - if (s == NULL) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, - "Invalid attribute syntax '%s' for '%s' in @ATTRIBUTES\n", - syntax, msg->elements[i].name); - goto failed; - } - - flags |= LDB_ATTR_FLAG_ALLOCATED; - if (ldb_schema_attribute_add_with_syntax(module->ldb, msg->elements[i].name, flags, s) != 0) { - goto failed; - } - } - - return 0; -failed: - return -1; -} - - -/* - initialise the baseinfo record -*/ -static int ltdb_baseinfo_init(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - struct ldb_message *msg; - struct ldb_message_element el; - struct ldb_val val; - int ret; - /* the initial sequence number must be different from the one - set in ltdb_cache_free(). Thanks to Jon for pointing this - out. */ - const char *initial_sequence_number = "1"; - - ltdb->sequence_number = atof(initial_sequence_number); - - msg = talloc(ltdb, struct ldb_message); - if (msg == NULL) { - goto failed; - } - - msg->num_elements = 1; - msg->elements = ⪙ - msg->dn = ldb_dn_new(msg, module->ldb, LTDB_BASEINFO); - if (!msg->dn) { - goto failed; - } - el.name = talloc_strdup(msg, LTDB_SEQUENCE_NUMBER); - if (!el.name) { - goto failed; - } - el.values = &val; - el.num_values = 1; - el.flags = 0; - val.data = (uint8_t *)talloc_strdup(msg, initial_sequence_number); - if (!val.data) { - goto failed; - } - val.length = 1; - - ret = ltdb_store(module, msg, TDB_INSERT); - - talloc_free(msg); - - return ret; - -failed: - talloc_free(msg); - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; -} - -/* - free any cache records - */ -static void ltdb_cache_free(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - - ltdb->sequence_number = 0; - talloc_free(ltdb->cache); - ltdb->cache = NULL; -} - -/* - force a cache reload -*/ -int ltdb_cache_reload(struct ldb_module *module) -{ - ltdb_attributes_unload(module); - ltdb_cache_free(module); - return ltdb_cache_load(module); -} - -/* - load the cache records -*/ -int ltdb_cache_load(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - struct ldb_dn *baseinfo_dn = NULL, *options_dn = NULL; - struct ldb_dn *indexlist_dn = NULL; - uint64_t seq; - struct ldb_message *baseinfo = NULL, *options = NULL; - int r; - - /* a very fast check to avoid extra database reads */ - if (ltdb->cache != NULL && - tdb_get_seqnum(ltdb->tdb) == ltdb->tdb_seqnum) { - return 0; - } - - if (ltdb->cache == NULL) { - ltdb->cache = talloc_zero(ltdb, struct ltdb_cache); - if (ltdb->cache == NULL) goto failed; - ltdb->cache->indexlist = talloc_zero(ltdb->cache, struct ldb_message); - ltdb->cache->attributes = talloc_zero(ltdb->cache, struct ldb_message); - if (ltdb->cache->indexlist == NULL || - ltdb->cache->attributes == NULL) { - goto failed; - } - } - - baseinfo = talloc(ltdb->cache, struct ldb_message); - if (baseinfo == NULL) goto failed; - - baseinfo_dn = ldb_dn_new(module, module->ldb, LTDB_BASEINFO); - if (baseinfo_dn == NULL) goto failed; - - r= ltdb_search_dn1(module, baseinfo_dn, baseinfo); - if (r != LDB_SUCCESS && r != LDB_ERR_NO_SUCH_OBJECT) { - goto failed; - } - - /* possibly initialise the baseinfo */ - if (r == LDB_ERR_NO_SUCH_OBJECT) { - if (ltdb_baseinfo_init(module) != LDB_SUCCESS) { - goto failed; - } - if (ltdb_search_dn1(module, baseinfo_dn, baseinfo) != LDB_SUCCESS) { - goto failed; - } - } - - ltdb->tdb_seqnum = tdb_get_seqnum(ltdb->tdb); - - /* if the current internal sequence number is the same as the one - in the database then assume the rest of the cache is OK */ - seq = ldb_msg_find_attr_as_uint64(baseinfo, LTDB_SEQUENCE_NUMBER, 0); - if (seq == ltdb->sequence_number) { - goto done; - } - ltdb->sequence_number = seq; - - /* Read an interpret database options */ - options = talloc(ltdb->cache, struct ldb_message); - if (options == NULL) goto failed; - - options_dn = ldb_dn_new(options, module->ldb, LTDB_OPTIONS); - if (options_dn == NULL) goto failed; - - r= ltdb_search_dn1(module, options_dn, options); - if (r != LDB_SUCCESS && r != LDB_ERR_NO_SUCH_OBJECT) { - goto failed; - } - - /* set flag for checking base DN on searches */ - if (r == LDB_SUCCESS) { - ltdb->check_base = ldb_msg_find_attr_as_bool(options, LTDB_CHECK_BASE, false); - } else { - ltdb->check_base = false; - } - - talloc_free(ltdb->cache->last_attribute.name); - memset(<db->cache->last_attribute, 0, sizeof(ltdb->cache->last_attribute)); - - ltdb_attributes_unload(module); - - talloc_free(ltdb->cache->indexlist); - - ltdb->cache->indexlist = talloc_zero(ltdb->cache, struct ldb_message); - ltdb->cache->attributes = talloc_zero(ltdb->cache, struct ldb_message); - if (ltdb->cache->indexlist == NULL || - ltdb->cache->attributes == NULL) { - goto failed; - } - - indexlist_dn = ldb_dn_new(module, module->ldb, LTDB_INDEXLIST); - if (indexlist_dn == NULL) goto failed; - - r = ltdb_search_dn1(module, indexlist_dn, ltdb->cache->indexlist); - if (r != LDB_SUCCESS && r != LDB_ERR_NO_SUCH_OBJECT) { - goto failed; - } - - if (ltdb_attributes_load(module) == -1) { - goto failed; - } - -done: - talloc_free(options); - talloc_free(baseinfo); - talloc_free(baseinfo_dn); - talloc_free(indexlist_dn); - return 0; - -failed: - talloc_free(options); - talloc_free(baseinfo); - talloc_free(baseinfo_dn); - talloc_free(indexlist_dn); - return -1; -} - - -/* - increase the sequence number to indicate a database change -*/ -int ltdb_increase_sequence_number(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - struct ldb_message *msg; - struct ldb_message_element el[2]; - struct ldb_val val; - struct ldb_val val_time; - time_t t = time(NULL); - char *s = NULL; - int ret; - - msg = talloc(ltdb, struct ldb_message); - if (msg == NULL) { - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; - } - - s = talloc_asprintf(msg, "%llu", ltdb->sequence_number+1); - if (!s) { - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; - } - - msg->num_elements = ARRAY_SIZE(el); - msg->elements = el; - msg->dn = ldb_dn_new(msg, module->ldb, LTDB_BASEINFO); - if (msg->dn == NULL) { - talloc_free(msg); - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; - } - el[0].name = talloc_strdup(msg, LTDB_SEQUENCE_NUMBER); - if (el[0].name == NULL) { - talloc_free(msg); - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; - } - el[0].values = &val; - el[0].num_values = 1; - el[0].flags = LDB_FLAG_MOD_REPLACE; - val.data = (uint8_t *)s; - val.length = strlen(s); - - el[1].name = talloc_strdup(msg, LTDB_MOD_TIMESTAMP); - if (el[1].name == NULL) { - talloc_free(msg); - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; - } - el[1].values = &val_time; - el[1].num_values = 1; - el[1].flags = LDB_FLAG_MOD_REPLACE; - - s = ldb_timestring(msg, t); - if (s == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - val_time.data = (uint8_t *)s; - val_time.length = strlen(s); - - ret = ltdb_modify_internal(module, msg); - - talloc_free(msg); - - if (ret == LDB_SUCCESS) { - ltdb->sequence_number += 1; - } - - /* updating the tdb_seqnum here avoids us reloading the cache - records due to our own modification */ - ltdb->tdb_seqnum = tdb_get_seqnum(ltdb->tdb); - - return ret; -} - -int ltdb_check_at_attributes_values(const struct ldb_val *value) -{ - int i; - - for (i = 0; ltdb_valid_attr_flags[i].name != NULL; i++) { - if ((strcmp(ltdb_valid_attr_flags[i].name, (char *)value->data) == 0)) { - return 0; - } - } - - return -1; -} - diff --git a/ldb/ldb_tdb/ldb_index.c b/ldb/ldb_tdb/ldb_index.c deleted file mode 100644 index c4c23022f..000000000 --- a/ldb/ldb_tdb/ldb_index.c +++ /dev/null @@ -1,1586 +0,0 @@ -/* - ldb database library - - Copyright (C) Andrew Tridgell 2004 - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, see <http://www.gnu.org/licenses/>. -*/ - -/* - * Name: ldb - * - * Component: ldb tdb backend - indexing - * - * Description: indexing routines for ldb tdb backend - * - * Author: Andrew Tridgell - */ - -#include "ldb_includes.h" - -#include "ldb_tdb.h" - -/* - the idxptr code is a bit unusual. The way it works is to replace - @IDX elements in records during a transaction with @IDXPTR - elements. The @IDXPTR elements don't contain the actual index entry - values, but contain a pointer to a linked list of values. - - This means we are storing pointers in a database, which is normally - not allowed, but in this case we are storing them only for the - duration of a transaction, and re-writing them into the normal @IDX - format at the end of the transaction. That means no other processes - are ever exposed to the @IDXPTR values. - - The advantage is that the linked list doesn't cause huge - fragmentation during a transaction. Without the @IDXPTR method we - often ended up with a ldb that was between 10x and 100x larger then - it needs to be due to massive fragmentation caused by re-writing - @INDEX records many times during indexing. - */ -struct ldb_index_pointer { - struct ldb_index_pointer *next, *prev; - struct ldb_val value; -}; - -struct ltdb_idxptr { - int num_dns; - const char **dn_list; - bool repack; -}; - -/* - add to the list of DNs that need to be fixed on transaction end - */ -static int ltdb_idxptr_add(struct ldb_module *module, const struct ldb_message *msg) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - ltdb->idxptr->dn_list = talloc_realloc(ltdb->idxptr, ltdb->idxptr->dn_list, - const char *, ltdb->idxptr->num_dns+1); - if (ltdb->idxptr->dn_list == NULL) { - ltdb->idxptr->num_dns = 0; - return LDB_ERR_OPERATIONS_ERROR; - } - ltdb->idxptr->dn_list[ltdb->idxptr->num_dns] = - talloc_strdup(ltdb->idxptr->dn_list, ldb_dn_get_linearized(msg->dn)); - if (ltdb->idxptr->dn_list[ltdb->idxptr->num_dns] == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - ltdb->idxptr->num_dns++; - return LDB_SUCCESS; -} - -/* free an idxptr record */ -static int ltdb_free_idxptr(struct ldb_module *module, struct ldb_message_element *el) -{ - struct ldb_val val; - struct ldb_index_pointer *ptr; - - if (el->num_values != 1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - val = el->values[0]; - if (val.length != sizeof(void *)) { - return LDB_ERR_OPERATIONS_ERROR; - } - - ptr = *(struct ldb_index_pointer **)val.data; - if (talloc_get_type(ptr, struct ldb_index_pointer) != ptr) { - return LDB_ERR_OPERATIONS_ERROR; - } - - while (ptr) { - struct ldb_index_pointer *tmp = ptr; - DLIST_REMOVE(ptr, ptr); - talloc_free(tmp); - } - - return LDB_SUCCESS; -} - - -/* convert from the IDXPTR format to a ldb_message_element format */ -static int ltdb_convert_from_idxptr(struct ldb_module *module, struct ldb_message_element *el) -{ - struct ldb_val val; - struct ldb_index_pointer *ptr, *tmp; - int i; - struct ldb_val *val2; - - if (el->num_values != 1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - val = el->values[0]; - if (val.length != sizeof(void *)) { - return LDB_ERR_OPERATIONS_ERROR; - } - - ptr = *(struct ldb_index_pointer **)val.data; - if (talloc_get_type(ptr, struct ldb_index_pointer) != ptr) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* count the length of the list */ - for (i=0, tmp = ptr; tmp; tmp=tmp->next) { - i++; - } - - /* allocate the new values array */ - val2 = talloc_realloc(NULL, el->values, struct ldb_val, i); - if (val2 == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - el->values = val2; - el->num_values = i; - - /* populate the values array */ - for (i=0, tmp = ptr; tmp; tmp=tmp->next, i++) { - el->values[i].length = tmp->value.length; - /* we need to over-allocate here as there are still some places - in ldb that rely on null termination. */ - el->values[i].data = talloc_size(el->values, tmp->value.length+1); - if (el->values[i].data == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - memcpy(el->values[i].data, tmp->value.data, tmp->value.length); - el->values[i].data[tmp->value.length] = 0; - } - - /* update the name */ - el->name = LTDB_IDX; - - return LDB_SUCCESS; -} - - -/* convert to the IDXPTR format from a ldb_message_element format */ -static int ltdb_convert_to_idxptr(struct ldb_module *module, struct ldb_message_element *el) -{ - struct ldb_index_pointer *ptr, *tmp; - int i; - struct ldb_val *val2; - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - - ptr = NULL; - - for (i=0;i<el->num_values;i++) { - tmp = talloc(ltdb->idxptr, struct ldb_index_pointer); - if (tmp == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - tmp->value = el->values[i]; - tmp->value.data = talloc_memdup(tmp, tmp->value.data, tmp->value.length); - if (tmp->value.data == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - DLIST_ADD(ptr, tmp); - } - - /* allocate the new values array */ - val2 = talloc_realloc(NULL, el->values, struct ldb_val, 1); - if (val2 == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - el->values = val2; - el->num_values = 1; - - el->values[0].data = talloc_memdup(el->values, &ptr, sizeof(ptr)); - el->values[0].length = sizeof(ptr); - - /* update the name */ - el->name = LTDB_IDXPTR; - - return LDB_SUCCESS; -} - - -/* enable the idxptr mode when transactions start */ -int ltdb_index_transaction_start(struct ldb_module *module) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - ltdb->idxptr = talloc_zero(module, struct ltdb_idxptr); - return LDB_SUCCESS; -} - -/* - a wrapper around ltdb_search_dn1() which translates pointer based index records - and maps them into normal ldb message structures - */ -static int ltdb_search_dn1_index(struct ldb_module *module, - struct ldb_dn *dn, struct ldb_message *msg) -{ - int ret, i; - ret = ltdb_search_dn1(module, dn, msg); - if (ret != LDB_SUCCESS) { - return ret; - } - - /* if this isn't a @INDEX record then don't munge it */ - if (strncmp(ldb_dn_get_linearized(msg->dn), LTDB_INDEX ":", strlen(LTDB_INDEX) + 1) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - for (i=0;i<msg->num_elements;i++) { - struct ldb_message_element *el = &msg->elements[i]; - if (strcmp(el->name, LTDB_IDXPTR) == 0) { - ret = ltdb_convert_from_idxptr(module, el); - if (ret != LDB_SUCCESS) { - return ret; - } - } - } - - return ret; -} - - - -/* - fixup the idxptr for one DN - */ -static int ltdb_idxptr_fix_dn(struct ldb_module *module, const char *strdn) -{ - struct ldb_dn *dn; - struct ldb_message *msg = ldb_msg_new(module); - int ret; - - dn = ldb_dn_new(msg, module->ldb, strdn); - if (ltdb_search_dn1_index(module, dn, msg) == LDB_SUCCESS) { - ret = ltdb_store(module, msg, TDB_REPLACE); - } - talloc_free(msg); - return ret; -} - -/* cleanup the idxptr mode when transaction commits */ -int ltdb_index_transaction_commit(struct ldb_module *module) -{ - int i; - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - - /* fix all the DNs that we have modified */ - if (ltdb->idxptr) { - for (i=0;i<ltdb->idxptr->num_dns;i++) { - ltdb_idxptr_fix_dn(module, ltdb->idxptr->dn_list[i]); - } - - if (ltdb->idxptr->repack) { - tdb_repack(ltdb->tdb); - } - } - - talloc_free(ltdb->idxptr); - ltdb->idxptr = NULL; - return LDB_SUCCESS; -} - -/* cleanup the idxptr mode when transaction cancels */ -int ltdb_index_transaction_cancel(struct ldb_module *module) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - talloc_free(ltdb->idxptr); - ltdb->idxptr = NULL; - return LDB_SUCCESS; -} - - - -/* a wrapper around ltdb_store() for the index code which - stores in IDXPTR format when idxptr mode is enabled - - WARNING: This modifies the msg which is passed in -*/ -int ltdb_store_idxptr(struct ldb_module *module, const struct ldb_message *msg, int flgs) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - int ret; - - if (ltdb->idxptr) { - int i; - struct ldb_message *msg2 = ldb_msg_new(module); - - /* free any old pointer */ - ret = ltdb_search_dn1(module, msg->dn, msg2); - if (ret == 0) { - for (i=0;i<msg2->num_elements;i++) { - struct ldb_message_element *el = &msg2->elements[i]; - if (strcmp(el->name, LTDB_IDXPTR) == 0) { - ret = ltdb_free_idxptr(module, el); - if (ret != LDB_SUCCESS) { - return ret; - } - } - } - } - talloc_free(msg2); - - for (i=0;i<msg->num_elements;i++) { - struct ldb_message_element *el = &msg->elements[i]; - if (strcmp(el->name, LTDB_IDX) == 0) { - ret = ltdb_convert_to_idxptr(module, el); - if (ret != LDB_SUCCESS) { - return ret; - } - } - } - - if (ltdb_idxptr_add(module, msg) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - } - - ret = ltdb_store(module, msg, flgs); - return ret; -} - - -/* - find an element in a list, using the given comparison function and - assuming that the list is already sorted using comp_fn - - return -1 if not found, or the index of the first occurance of needle if found -*/ -static int ldb_list_find(const void *needle, - const void *base, size_t nmemb, size_t size, - comparison_fn_t comp_fn) -{ - const char *base_p = (const char *)base; - size_t min_i, max_i, test_i; - - if (nmemb == 0) { - return -1; - } - - min_i = 0; - max_i = nmemb-1; - - while (min_i < max_i) { - int r; - - test_i = (min_i + max_i) / 2; - /* the following cast looks strange, but is - correct. The key to understanding it is that base_p - is a pointer to an array of pointers, so we have to - dereference it after casting to void **. The strange - const in the middle gives us the right type of pointer - after the dereference (tridge) */ - r = comp_fn(needle, *(void * const *)(base_p + (size * test_i))); - if (r == 0) { - /* scan back for first element */ - while (test_i > 0 && - comp_fn(needle, *(void * const *)(base_p + (size * (test_i-1)))) == 0) { - test_i--; - } - return test_i; - } - if (r < 0) { - if (test_i == 0) { - return -1; - } - max_i = test_i - 1; - } - if (r > 0) { - min_i = test_i + 1; - } - } - - if (comp_fn(needle, *(void * const *)(base_p + (size * min_i))) == 0) { - return min_i; - } - - return -1; -} - -struct dn_list { - unsigned int count; - char **dn; -}; - -/* - return the dn key to be used for an index - caller frees -*/ -static struct ldb_dn *ltdb_index_key(struct ldb_context *ldb, - const char *attr, const struct ldb_val *value) -{ - struct ldb_dn *ret; - struct ldb_val v; - const struct ldb_schema_attribute *a; - char *attr_folded; - int r; - - attr_folded = ldb_attr_casefold(ldb, attr); - if (!attr_folded) { - return NULL; - } - - a = ldb_schema_attribute_by_name(ldb, attr); - r = a->syntax->canonicalise_fn(ldb, ldb, value, &v); - if (r != LDB_SUCCESS) { - const char *errstr = ldb_errstring(ldb); - /* canonicalisation can be refused. For example, - a attribute that takes wildcards will refuse to canonicalise - if the value contains a wildcard */ - ldb_asprintf_errstring(ldb, "Failed to create index key for attribute '%s':%s%s%s", - attr, ldb_strerror(r), (errstr?":":""), (errstr?errstr:"")); - talloc_free(attr_folded); - return NULL; - } - if (ldb_should_b64_encode(&v)) { - char *vstr = ldb_base64_encode(ldb, (char *)v.data, v.length); - if (!vstr) return NULL; - ret = ldb_dn_new_fmt(ldb, ldb, "%s:%s::%s", LTDB_INDEX, attr_folded, vstr); - talloc_free(vstr); - } else { - ret = ldb_dn_new_fmt(ldb, ldb, "%s:%s:%.*s", LTDB_INDEX, attr_folded, (int)v.length, (char *)v.data); - } - - if (v.data != value->data) { - talloc_free(v.data); - } - talloc_free(attr_folded); - - return ret; -} - -/* - see if a attribute value is in the list of indexed attributes -*/ -static int ldb_msg_find_idx(const struct ldb_message *msg, const char *attr, - unsigned int *v_idx, const char *key) -{ - unsigned int i, j; - for (i=0;i<msg->num_elements;i++) { - if (ldb_attr_cmp(msg->elements[i].name, key) == 0) { - const struct ldb_message_element *el = &msg->elements[i]; - - if (attr == NULL) { - /* in this case we are just looking to see if key is present, - we are not spearching for a specific index */ - return 0; - } - - for (j=0;j<el->num_values;j++) { - if (ldb_attr_cmp((char *)el->values[j].data, attr) == 0) { - if (v_idx) { - *v_idx = j; - } - return i; - } - } - } - } - return -1; -} - -/* used in sorting dn lists */ -static int list_cmp(const char **s1, const char **s2) -{ - return strcmp(*s1, *s2); -} - -/* - return a list of dn's that might match a simple indexed search or - */ -static int ltdb_index_dn_simple(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list) -{ - struct ldb_context *ldb = module->ldb; - struct ldb_dn *dn; - int ret; - unsigned int i, j; - struct ldb_message *msg; - - list->count = 0; - list->dn = NULL; - - /* if the attribute isn't in the list of indexed attributes then - this node needs a full search */ - if (ldb_msg_find_idx(index_list, tree->u.equality.attr, NULL, LTDB_IDXATTR) == -1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* the attribute is indexed. Pull the list of DNs that match the - search criterion */ - dn = ltdb_index_key(ldb, tree->u.equality.attr, &tree->u.equality.value); - if (!dn) return LDB_ERR_OPERATIONS_ERROR; - - msg = talloc(list, struct ldb_message); - if (msg == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ltdb_search_dn1_index(module, dn, msg); - talloc_free(dn); - if (ret != LDB_SUCCESS) { - return ret; - } - - for (i=0;i<msg->num_elements;i++) { - struct ldb_message_element *el; - - if (strcmp(msg->elements[i].name, LTDB_IDX) != 0) { - continue; - } - - el = &msg->elements[i]; - - list->dn = talloc_array(list, char *, el->num_values); - if (!list->dn) { - talloc_free(msg); - return LDB_ERR_OPERATIONS_ERROR; - } - - for (j=0;j<el->num_values;j++) { - list->dn[list->count] = - talloc_strdup(list->dn, (char *)el->values[j].data); - if (!list->dn[list->count]) { - talloc_free(msg); - return LDB_ERR_OPERATIONS_ERROR; - } - list->count++; - } - } - - talloc_free(msg); - - if (list->count > 1) { - qsort(list->dn, list->count, sizeof(char *), (comparison_fn_t) list_cmp); - } - - return LDB_SUCCESS; -} - - -static int list_union(struct ldb_context *, struct dn_list *, const struct dn_list *); - -/* - return a list of dn's that might match a leaf indexed search - */ -static int ltdb_index_dn_leaf(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list) -{ - if (ldb_attr_dn(tree->u.equality.attr) == 0) { - list->dn = talloc_array(list, char *, 1); - if (list->dn == NULL) { - ldb_oom(module->ldb); - return LDB_ERR_OPERATIONS_ERROR; - } - list->dn[0] = talloc_strdup(list->dn, (char *)tree->u.equality.value.data); - if (list->dn[0] == NULL) { - ldb_oom(module->ldb); - return LDB_ERR_OPERATIONS_ERROR; - } - list->count = 1; - return LDB_SUCCESS; - } - return ltdb_index_dn_simple(module, tree, index_list, list); -} - - -/* - list intersection - list = list & list2 - relies on the lists being sorted -*/ -static int list_intersect(struct ldb_context *ldb, - struct dn_list *list, const struct dn_list *list2) -{ - struct dn_list *list3; - unsigned int i; - - if (list->count == 0 || list2->count == 0) { - /* 0 & X == 0 */ - return LDB_ERR_NO_SUCH_OBJECT; - } - - list3 = talloc(ldb, struct dn_list); - if (list3 == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - list3->dn = talloc_array(list3, char *, list->count); - if (!list3->dn) { - talloc_free(list3); - return LDB_ERR_OPERATIONS_ERROR; - } - list3->count = 0; - - for (i=0;i<list->count;i++) { - if (ldb_list_find(list->dn[i], list2->dn, list2->count, - sizeof(char *), (comparison_fn_t)strcmp) != -1) { - list3->dn[list3->count] = talloc_move(list3->dn, &list->dn[i]); - list3->count++; - } else { - talloc_free(list->dn[i]); - } - } - - talloc_free(list->dn); - list->dn = talloc_move(list, &list3->dn); - list->count = list3->count; - talloc_free(list3); - - return LDB_ERR_NO_SUCH_OBJECT; -} - - -/* - list union - list = list | list2 - relies on the lists being sorted -*/ -static int list_union(struct ldb_context *ldb, - struct dn_list *list, const struct dn_list *list2) -{ - unsigned int i; - char **d; - unsigned int count = list->count; - - if (list->count == 0 && list2->count == 0) { - /* 0 | 0 == 0 */ - return LDB_ERR_NO_SUCH_OBJECT; - } - - d = talloc_realloc(list, list->dn, char *, list->count + list2->count); - if (!d) { - return LDB_ERR_OPERATIONS_ERROR; - } - list->dn = d; - - for (i=0;i<list2->count;i++) { - if (ldb_list_find(list2->dn[i], list->dn, count, - sizeof(char *), (comparison_fn_t)strcmp) == -1) { - list->dn[list->count] = talloc_strdup(list->dn, list2->dn[i]); - if (!list->dn[list->count]) { - return LDB_ERR_OPERATIONS_ERROR; - } - list->count++; - } - } - - if (list->count != count) { - qsort(list->dn, list->count, sizeof(char *), (comparison_fn_t)list_cmp); - } - - return LDB_ERR_NO_SUCH_OBJECT; -} - -static int ltdb_index_dn(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list); - - -/* - OR two index results - */ -static int ltdb_index_dn_or(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list) -{ - struct ldb_context *ldb = module->ldb; - unsigned int i; - int ret; - - ret = LDB_ERR_OPERATIONS_ERROR; - list->dn = NULL; - list->count = 0; - - for (i=0;i<tree->u.list.num_elements;i++) { - struct dn_list *list2; - int v; - - list2 = talloc(module, struct dn_list); - if (list2 == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - v = ltdb_index_dn(module, tree->u.list.elements[i], index_list, list2); - - if (v == LDB_ERR_NO_SUCH_OBJECT) { - /* 0 || X == X */ - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - ret = v; - } - talloc_free(list2); - continue; - } - - if (v != LDB_SUCCESS && v != LDB_ERR_NO_SUCH_OBJECT) { - /* 1 || X == 1 */ - talloc_free(list->dn); - talloc_free(list2); - return v; - } - - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - ret = LDB_SUCCESS; - list->dn = talloc_move(list, &list2->dn); - list->count = list2->count; - } else { - if (list_union(ldb, list, list2) == -1) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - ret = LDB_SUCCESS; - } - talloc_free(list2); - } - - if (list->count == 0) { - return LDB_ERR_NO_SUCH_OBJECT; - } - - return ret; -} - - -/* - NOT an index results - */ -static int ltdb_index_dn_not(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list) -{ - /* the only way to do an indexed not would be if we could - negate the not via another not or if we knew the total - number of database elements so we could know that the - existing expression covered the whole database. - - instead, we just give up, and rely on a full index scan - (unless an outer & manages to reduce the list) - */ - return LDB_ERR_OPERATIONS_ERROR; -} - -/* - AND two index results - */ -static int ltdb_index_dn_and(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list) -{ - struct ldb_context *ldb = module->ldb; - unsigned int i; - int ret; - - ret = LDB_ERR_OPERATIONS_ERROR; - list->dn = NULL; - list->count = 0; - - for (i=0;i<tree->u.list.num_elements;i++) { - struct dn_list *list2; - int v; - - list2 = talloc(module, struct dn_list); - if (list2 == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - v = ltdb_index_dn(module, tree->u.list.elements[i], index_list, list2); - - if (v == LDB_ERR_NO_SUCH_OBJECT) { - /* 0 && X == 0 */ - talloc_free(list->dn); - talloc_free(list2); - return LDB_ERR_NO_SUCH_OBJECT; - } - - if (v != LDB_SUCCESS && v != LDB_ERR_NO_SUCH_OBJECT) { - talloc_free(list2); - continue; - } - - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - ret = LDB_SUCCESS; - talloc_free(list->dn); - list->dn = talloc_move(list, &list2->dn); - list->count = list2->count; - } else { - if (list_intersect(ldb, list, list2) == -1) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - } - - talloc_free(list2); - - if (list->count == 0) { - talloc_free(list->dn); - return LDB_ERR_NO_SUCH_OBJECT; - } - } - - return ret; -} - -/* - AND index results and ONE level special index - */ -static int ltdb_index_dn_one(struct ldb_module *module, - struct ldb_dn *parent_dn, - struct dn_list *list) -{ - struct ldb_context *ldb = module->ldb; - struct dn_list *list2; - struct ldb_message *msg; - struct ldb_dn *key; - struct ldb_val val; - unsigned int i, j; - int ret; - - list2 = talloc_zero(module, struct dn_list); - if (list2 == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* the attribute is indexed. Pull the list of DNs that match the - search criterion */ - val.data = (uint8_t *)((uintptr_t)ldb_dn_get_casefold(parent_dn)); - val.length = strlen((char *)val.data); - key = ltdb_index_key(ldb, LTDB_IDXONE, &val); - if (!key) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - - msg = talloc(list2, struct ldb_message); - if (msg == NULL) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ltdb_search_dn1_index(module, key, msg); - talloc_free(key); - if (ret != LDB_SUCCESS) { - return ret; - } - - for (i = 0; i < msg->num_elements; i++) { - struct ldb_message_element *el; - - if (strcmp(msg->elements[i].name, LTDB_IDX) != 0) { - continue; - } - - el = &msg->elements[i]; - - list2->dn = talloc_array(list2, char *, el->num_values); - if (!list2->dn) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - - for (j = 0; j < el->num_values; j++) { - list2->dn[list2->count] = talloc_strdup(list2->dn, (char *)el->values[j].data); - if (!list2->dn[list2->count]) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - list2->count++; - } - } - - if (list2->count == 0) { - talloc_free(list2); - return LDB_ERR_NO_SUCH_OBJECT; - } - - if (list2->count > 1) { - qsort(list2->dn, list2->count, sizeof(char *), (comparison_fn_t) list_cmp); - } - - if (list->count > 0) { - if (list_intersect(ldb, list, list2) == -1) { - talloc_free(list2); - return LDB_ERR_OPERATIONS_ERROR; - } - - if (list->count == 0) { - talloc_free(list->dn); - talloc_free(list2); - return LDB_ERR_NO_SUCH_OBJECT; - } - } else { - list->dn = talloc_move(list, &list2->dn); - list->count = list2->count; - } - - talloc_free(list2); - - return LDB_SUCCESS; -} - -/* - return a list of dn's that might match a indexed search or - an error. return LDB_ERR_NO_SUCH_OBJECT for no matches, or LDB_SUCCESS for matches - */ -static int ltdb_index_dn(struct ldb_module *module, - const struct ldb_parse_tree *tree, - const struct ldb_message *index_list, - struct dn_list *list) -{ - int ret = LDB_ERR_OPERATIONS_ERROR; - - switch (tree->operation) { - case LDB_OP_AND: - ret = ltdb_index_dn_and(module, tree, index_list, list); - break; - - case LDB_OP_OR: - ret = ltdb_index_dn_or(module, tree, index_list, list); - break; - - case LDB_OP_NOT: - ret = ltdb_index_dn_not(module, tree, index_list, list); - break; - - case LDB_OP_EQUALITY: - ret = ltdb_index_dn_leaf(module, tree, index_list, list); - break; - - case LDB_OP_SUBSTRING: - case LDB_OP_GREATER: - case LDB_OP_LESS: - case LDB_OP_PRESENT: - case LDB_OP_APPROX: - case LDB_OP_EXTENDED: - /* we can't index with fancy bitops yet */ - ret = LDB_ERR_OPERATIONS_ERROR; - break; - } - - return ret; -} - -/* - filter a candidate dn_list from an indexed search into a set of results - extracting just the given attributes -*/ -static int ltdb_index_filter(const struct dn_list *dn_list, - struct ltdb_context *ac) -{ - struct ldb_message *msg; - unsigned int i; - - for (i = 0; i < dn_list->count; i++) { - struct ldb_dn *dn; - int ret; - - msg = ldb_msg_new(ac); - if (!msg) { - return LDB_ERR_OPERATIONS_ERROR; - } - - dn = ldb_dn_new(msg, ac->module->ldb, dn_list->dn[i]); - if (dn == NULL) { - talloc_free(msg); - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ltdb_search_dn1(ac->module, dn, msg); - talloc_free(dn); - if (ret == LDB_ERR_NO_SUCH_OBJECT) { - /* the record has disappeared? yes, this can happen */ - talloc_free(msg); - continue; - } - - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - /* an internal error */ - talloc_free(msg); - return LDB_ERR_OPERATIONS_ERROR; - } - - if (!ldb_match_msg(ac->module->ldb, msg, - ac->tree, ac->base, ac->scope)) { - talloc_free(msg); - continue; - } - - /* filter the attributes that the user wants */ - ret = ltdb_filter_attrs(msg, ac->attrs); - - if (ret == -1) { - talloc_free(msg); - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ldb_module_send_entry(ac->req, msg, NULL); - if (ret != LDB_SUCCESS) { - ac->callback_failed = true; - return ret; - } - } - - return LDB_SUCCESS; -} - -/* - search the database with a LDAP-like expression using indexes - returns -1 if an indexed search is not possible, in which - case the caller should call ltdb_search_full() -*/ -int ltdb_search_indexed(struct ltdb_context *ac) -{ - struct ltdb_private *ltdb = talloc_get_type(ac->module->private_data, struct ltdb_private); - struct dn_list *dn_list; - int ret, idxattr, idxone; - - idxattr = idxone = 0; - ret = ldb_msg_find_idx(ltdb->cache->indexlist, NULL, NULL, LTDB_IDXATTR); - if (ret == 0 ) { - idxattr = 1; - } - - /* We do one level indexing only if requested */ - ret = ldb_msg_find_idx(ltdb->cache->indexlist, NULL, NULL, LTDB_IDXONE); - if (ret == 0 ) { - idxone = 1; - } - - if ((ac->scope == LDB_SCOPE_ONELEVEL && (idxattr+idxone == 0)) || - (ac->scope == LDB_SCOPE_SUBTREE && idxattr == 0)) { - /* no indexes? must do full search */ - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = LDB_ERR_OPERATIONS_ERROR; - - dn_list = talloc_zero(ac, struct dn_list); - if (dn_list == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - if (ac->scope == LDB_SCOPE_BASE) { - /* with BASE searches only one DN can match */ - dn_list->dn = talloc_array(dn_list, char *, 1); - if (dn_list->dn == NULL) { - ldb_oom(ac->module->ldb); - return LDB_ERR_OPERATIONS_ERROR; - } - dn_list->dn[0] = ldb_dn_alloc_linearized(dn_list, ac->base); - if (dn_list->dn[0] == NULL) { - ldb_oom(ac->module->ldb); - return LDB_ERR_OPERATIONS_ERROR; - } - dn_list->count = 1; - ret = LDB_SUCCESS; - } - - if (ac->scope != LDB_SCOPE_BASE && idxattr == 1) { - ret = ltdb_index_dn(ac->module, ac->tree, ltdb->cache->indexlist, dn_list); - - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - talloc_free(dn_list); - return ret; - } - } - - if (ac->scope == LDB_SCOPE_ONELEVEL && idxone == 1) { - ret = ltdb_index_dn_one(ac->module, ac->base, dn_list); - } - - if (ret == LDB_SUCCESS) { - /* we've got a candidate list - now filter by the full tree - and extract the needed attributes */ - ret = ltdb_index_filter(dn_list, ac); - } - - talloc_free(dn_list); - - return ret; -} - -/* - add a index element where this is the first indexed DN for this value -*/ -static int ltdb_index_add1_new(struct ldb_context *ldb, - struct ldb_message *msg, - const char *dn) -{ - struct ldb_message_element *el; - - /* add another entry */ - el = talloc_realloc(msg, msg->elements, - struct ldb_message_element, msg->num_elements+1); - if (!el) { - return LDB_ERR_OPERATIONS_ERROR; - } - - msg->elements = el; - msg->elements[msg->num_elements].name = talloc_strdup(msg->elements, LTDB_IDX); - if (!msg->elements[msg->num_elements].name) { - return LDB_ERR_OPERATIONS_ERROR; - } - msg->elements[msg->num_elements].num_values = 0; - msg->elements[msg->num_elements].values = talloc(msg->elements, struct ldb_val); - if (!msg->elements[msg->num_elements].values) { - return LDB_ERR_OPERATIONS_ERROR; - } - msg->elements[msg->num_elements].values[0].length = strlen(dn); - msg->elements[msg->num_elements].values[0].data = discard_const_p(uint8_t, dn); - msg->elements[msg->num_elements].num_values = 1; - msg->num_elements++; - - return LDB_SUCCESS; -} - - -/* - add a index element where this is not the first indexed DN for this - value -*/ -static int ltdb_index_add1_add(struct ldb_context *ldb, - struct ldb_message *msg, - int idx, - const char *dn) -{ - struct ldb_val *v2; - unsigned int i; - - /* for multi-valued attributes we can end up with repeats */ - for (i=0;i<msg->elements[idx].num_values;i++) { - if (strcmp(dn, (char *)msg->elements[idx].values[i].data) == 0) { - return LDB_SUCCESS; - } - } - - v2 = talloc_realloc(msg->elements, msg->elements[idx].values, - struct ldb_val, - msg->elements[idx].num_values+1); - if (!v2) { - return LDB_ERR_OPERATIONS_ERROR; - } - msg->elements[idx].values = v2; - - msg->elements[idx].values[msg->elements[idx].num_values].length = strlen(dn); - msg->elements[idx].values[msg->elements[idx].num_values].data = discard_const_p(uint8_t, dn); - msg->elements[idx].num_values++; - - return LDB_SUCCESS; -} - -/* - add an index entry for one message element -*/ -static int ltdb_index_add1(struct ldb_module *module, const char *dn, - struct ldb_message_element *el, int v_idx) -{ - struct ldb_context *ldb = module->ldb; - struct ldb_message *msg; - struct ldb_dn *dn_key; - int ret; - unsigned int i; - - msg = talloc(module, struct ldb_message); - if (msg == NULL) { - errno = ENOMEM; - return LDB_ERR_OPERATIONS_ERROR; - } - - dn_key = ltdb_index_key(ldb, el->name, &el->values[v_idx]); - if (!dn_key) { - talloc_free(msg); - return LDB_ERR_OPERATIONS_ERROR; - } - talloc_steal(msg, dn_key); - - ret = ltdb_search_dn1_index(module, dn_key, msg); - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - talloc_free(msg); - return ret; - } - - if (ret == LDB_ERR_NO_SUCH_OBJECT) { - msg->dn = dn_key; - msg->num_elements = 0; - msg->elements = NULL; - } - - for (i=0;i<msg->num_elements;i++) { - if (strcmp(LTDB_IDX, msg->elements[i].name) == 0) { - break; - } - } - - if (i == msg->num_elements) { - ret = ltdb_index_add1_new(ldb, msg, dn); - } else { - ret = ltdb_index_add1_add(ldb, msg, i, dn); - } - - if (ret == LDB_SUCCESS) { - ret = ltdb_store_idxptr(module, msg, TDB_REPLACE); - } - - talloc_free(msg); - - return ret; -} - -static int ltdb_index_add0(struct ldb_module *module, const char *dn, - struct ldb_message_element *elements, int num_el) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - int ret; - unsigned int i, j; - - if (dn[0] == '@') { - return LDB_SUCCESS; - } - - if (ltdb->cache->indexlist->num_elements == 0) { - /* no indexed fields */ - return LDB_SUCCESS; - } - - for (i = 0; i < num_el; i++) { - ret = ldb_msg_find_idx(ltdb->cache->indexlist, elements[i].name, - NULL, LTDB_IDXATTR); - if (ret == -1) { - continue; - } - for (j = 0; j < elements[i].num_values; j++) { - ret = ltdb_index_add1(module, dn, &elements[i], j); - if (ret != LDB_SUCCESS) { - return ret; - } - } - } - - return LDB_SUCCESS; -} - -/* - add the index entries for a new record -*/ -int ltdb_index_add(struct ldb_module *module, const struct ldb_message *msg) -{ - const char *dn; - int ret; - - dn = ldb_dn_get_linearized(msg->dn); - if (dn == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ltdb_index_add0(module, dn, msg->elements, msg->num_elements); - - return ret; -} - - -/* - delete an index entry for one message element -*/ -int ltdb_index_del_value(struct ldb_module *module, const char *dn, - struct ldb_message_element *el, int v_idx) -{ - struct ldb_context *ldb = module->ldb; - struct ldb_message *msg; - struct ldb_dn *dn_key; - int ret, i; - unsigned int j; - - if (dn[0] == '@') { - return LDB_SUCCESS; - } - - dn_key = ltdb_index_key(ldb, el->name, &el->values[v_idx]); - if (!dn_key) { - return LDB_ERR_OPERATIONS_ERROR; - } - - msg = talloc(dn_key, struct ldb_message); - if (msg == NULL) { - talloc_free(dn_key); - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ltdb_search_dn1_index(module, dn_key, msg); - if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) { - talloc_free(dn_key); - return ret; - } - - if (ret == LDB_ERR_NO_SUCH_OBJECT) { - /* it wasn't indexed. Did we have an earlier error? If we did then - its gone now */ - talloc_free(dn_key); - return LDB_SUCCESS; - } - - i = ldb_msg_find_idx(msg, dn, &j, LTDB_IDX); - if (i == -1) { - struct ldb_ldif ldif; - - ldb_debug(ldb, LDB_DEBUG_ERROR, - "ERROR: dn %s not found in %s\n", dn, - ldb_dn_get_linearized(dn_key)); - ldif.changetype = LDB_CHANGETYPE_NONE; - ldif.msg = msg; - ldb_ldif_write_file(module->ldb, stdout, &ldif); - sleep(100); - /* it ain't there. hmmm */ - talloc_free(dn_key); - return LDB_SUCCESS; - } - - if (j != msg->elements[i].num_values - 1) { - memmove(&msg->elements[i].values[j], - &msg->elements[i].values[j+1], - (msg->elements[i].num_values-(j+1)) * - sizeof(msg->elements[i].values[0])); - } - msg->elements[i].num_values--; - - if (msg->elements[i].num_values == 0) { - ret = ltdb_delete_noindex(module, dn_key); - } else { - ret = ltdb_store_idxptr(module, msg, TDB_REPLACE); - } - - talloc_free(dn_key); - - return ret; -} - -/* - delete the index entries for a record - return -1 on failure -*/ -int ltdb_index_del(struct ldb_module *module, const struct ldb_message *msg) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - int ret; - const char *dn; - unsigned int i, j; - - /* find the list of indexed fields */ - if (ltdb->cache->indexlist->num_elements == 0) { - /* no indexed fields */ - return LDB_SUCCESS; - } - - if (ldb_dn_is_special(msg->dn)) { - return LDB_SUCCESS; - } - - dn = ldb_dn_get_linearized(msg->dn); - if (dn == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - for (i = 0; i < msg->num_elements; i++) { - ret = ldb_msg_find_idx(ltdb->cache->indexlist, msg->elements[i].name, - NULL, LTDB_IDXATTR); - if (ret == -1) { - continue; - } - for (j = 0; j < msg->elements[i].num_values; j++) { - ret = ltdb_index_del_value(module, dn, &msg->elements[i], j); - if (ret != LDB_SUCCESS) { - return ret; - } - } - } - - return LDB_SUCCESS; -} - -/* - handle special index for one level searches -*/ -int ltdb_index_one(struct ldb_module *module, const struct ldb_message *msg, int add) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - struct ldb_message_element el; - struct ldb_val val; - struct ldb_dn *pdn; - const char *dn; - int ret; - - /* We index for ONE Level only if requested */ - ret = ldb_msg_find_idx(ltdb->cache->indexlist, NULL, NULL, LTDB_IDXONE); - if (ret != 0) { - return LDB_SUCCESS; - } - - pdn = ldb_dn_get_parent(module, msg->dn); - if (pdn == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - dn = ldb_dn_get_linearized(msg->dn); - if (dn == NULL) { - talloc_free(pdn); - return LDB_ERR_OPERATIONS_ERROR; - } - - val.data = (uint8_t *)((uintptr_t)ldb_dn_get_casefold(pdn)); - if (val.data == NULL) { - talloc_free(pdn); - return LDB_ERR_OPERATIONS_ERROR; - } - - val.length = strlen((char *)val.data); - el.name = LTDB_IDXONE; - el.values = &val; - el.num_values = 1; - - if (add) { - ret = ltdb_index_add1(module, dn, &el, 0); - } else { /* delete */ - ret = ltdb_index_del_value(module, dn, &el, 0); - } - - talloc_free(pdn); - - return ret; -} - - -/* - traversal function that deletes all @INDEX records -*/ -static int delete_index(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state) -{ - const char *dn = "DN=" LTDB_INDEX ":"; - if (strncmp((char *)key.dptr, dn, strlen(dn)) == 0) { - return tdb_delete(tdb, key); - } - return 0; -} - -/* - traversal function that adds @INDEX records during a re index -*/ -static int re_index(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state) -{ - struct ldb_module *module = (struct ldb_module *)state; - struct ldb_message *msg; - const char *dn = NULL; - int ret; - TDB_DATA key2; - - if (strncmp((char *)key.dptr, "DN=@", 4) == 0 || - strncmp((char *)key.dptr, "DN=", 3) != 0) { - return 0; - } - - msg = talloc(module, struct ldb_message); - if (msg == NULL) { - return -1; - } - - ret = ltdb_unpack_data(module, &data, msg); - if (ret != 0) { - talloc_free(msg); - return -1; - } - - /* check if the DN key has changed, perhaps due to the - case insensitivity of an element changing */ - key2 = ltdb_key(module, msg->dn); - if (key2.dptr == NULL) { - /* probably a corrupt record ... darn */ - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Invalid DN in re_index: %s\n", - ldb_dn_get_linearized(msg->dn)); - talloc_free(msg); - return 0; - } - if (strcmp((char *)key2.dptr, (char *)key.dptr) != 0) { - tdb_delete(tdb, key); - tdb_store(tdb, key2, data, 0); - } - talloc_free(key2.dptr); - - if (msg->dn == NULL) { - dn = (char *)key.dptr + 3; - } else { - dn = ldb_dn_get_linearized(msg->dn); - } - - ret = ltdb_index_one(module, msg, 1); - if (ret == LDB_SUCCESS) { - ret = ltdb_index_add0(module, dn, msg->elements, msg->num_elements); - } else { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, - "Adding special ONE LEVEL index failed (%s)!\n", - ldb_dn_get_linearized(msg->dn)); - } - - talloc_free(msg); - - if (ret != LDB_SUCCESS) return -1; - - return 0; -} - -/* - force a complete reindex of the database -*/ -int ltdb_reindex(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - int ret; - - if (ltdb_cache_reload(module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* first traverse the database deleting any @INDEX records */ - ret = tdb_traverse(ltdb->tdb, delete_index, NULL); - if (ret == -1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* if we don't have indexes we have nothing todo */ - if (ltdb->cache->indexlist->num_elements == 0) { - return LDB_SUCCESS; - } - - /* now traverse adding any indexes for normal LDB records */ - ret = tdb_traverse(ltdb->tdb, re_index, module); - if (ret == -1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - if (ltdb->idxptr) { - ltdb->idxptr->repack = true; - } - - return LDB_SUCCESS; -} diff --git a/ldb/ldb_tdb/ldb_pack.c b/ldb/ldb_tdb/ldb_pack.c deleted file mode 100644 index afb07dcbc..000000000 --- a/ldb/ldb_tdb/ldb_pack.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - ldb database library - - Copyright (C) Andrew Tridgell 2004 - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, see <http://www.gnu.org/licenses/>. -*/ - -/* - * Name: ldb - * - * Component: ldb pack/unpack - * - * Description: pack/unpack routines for ldb messages as key/value blobs - * - * Author: Andrew Tridgell - */ - -#include "ldb_includes.h" -#include "ldb_tdb.h" - -/* change this if the data format ever changes */ -#define LTDB_PACKING_FORMAT 0x26011967 - -/* old packing formats */ -#define LTDB_PACKING_FORMAT_NODN 0x26011966 - -/* use a portable integer format */ -static void put_uint32(uint8_t *p, int ofs, unsigned int val) -{ - p += ofs; - p[0] = val&0xFF; - p[1] = (val>>8) & 0xFF; - p[2] = (val>>16) & 0xFF; - p[3] = (val>>24) & 0xFF; -} - -static unsigned int pull_uint32(uint8_t *p, int ofs) -{ - p += ofs; - return p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24); -} - -static int attribute_storable_values(const struct ldb_message_element *el) -{ - if (el->num_values == 0) return 0; - - if (ldb_attr_cmp(el->name, "dn") == 0) return 0; - - if (ldb_attr_cmp(el->name, "distinguishedName") == 0) return 0; - - return el->num_values; -} - -/* - pack a ldb message into a linear buffer in a TDB_DATA - - note that this routine avoids saving elements with zero values, - as these are equivalent to having no element - - caller frees the data buffer after use -*/ -int ltdb_pack_data(struct ldb_module *module, - const struct ldb_message *message, - struct TDB_DATA *data) -{ - struct ldb_context *ldb = module->ldb; - unsigned int i, j, real_elements=0; - size_t size; - const char *dn; - uint8_t *p; - size_t len; - - dn = ldb_dn_get_linearized(message->dn); - if (dn == NULL) { - errno = ENOMEM; - return -1; - } - - /* work out how big it needs to be */ - size = 8; - - size += 1 + strlen(dn); - - for (i=0;i<message->num_elements;i++) { - if (attribute_storable_values(&message->elements[i]) == 0) { - continue; - } - - real_elements++; - - size += 1 + strlen(message->elements[i].name) + 4; - for (j=0;j<message->elements[i].num_values;j++) { - size += 4 + message->elements[i].values[j].length + 1; - } - } - - /* allocate it */ - data->dptr = talloc_array(ldb, uint8_t, size); - if (!data->dptr) { - errno = ENOMEM; - return -1; - } - data->dsize = size; - - p = data->dptr; - put_uint32(p, 0, LTDB_PACKING_FORMAT); - put_uint32(p, 4, real_elements); - p += 8; - - /* the dn needs to be packed so we can be case preserving - while hashing on a case folded dn */ - len = strlen(dn); - memcpy(p, dn, len+1); - p += len + 1; - - for (i=0;i<message->num_elements;i++) { - if (attribute_storable_values(&message->elements[i]) == 0) { - continue; - } - len = strlen(message->elements[i].name); - memcpy(p, message->elements[i].name, len+1); - p += len + 1; - put_uint32(p, 0, message->elements[i].num_values); - p += 4; - for (j=0;j<message->elements[i].num_values;j++) { - put_uint32(p, 0, message->elements[i].values[j].length); - memcpy(p+4, message->elements[i].values[j].data, - message->elements[i].values[j].length); - p[4+message->elements[i].values[j].length] = 0; - p += 4 + message->elements[i].values[j].length + 1; - } - } - - return 0; -} - -/* - unpack a ldb message from a linear buffer in TDB_DATA - - Free with ltdb_unpack_data_free() -*/ -int ltdb_unpack_data(struct ldb_module *module, - const struct TDB_DATA *data, - struct ldb_message *message) -{ - struct ldb_context *ldb = module->ldb; - uint8_t *p; - unsigned int remaining; - unsigned int i, j; - unsigned format; - size_t len; - - message->elements = NULL; - - p = data->dptr; - if (data->dsize < 8) { - errno = EIO; - goto failed; - } - - format = pull_uint32(p, 0); - message->num_elements = pull_uint32(p, 4); - p += 8; - - remaining = data->dsize - 8; - - switch (format) { - case LTDB_PACKING_FORMAT_NODN: - message->dn = NULL; - break; - - case LTDB_PACKING_FORMAT: - len = strnlen((char *)p, remaining); - if (len == remaining) { - errno = EIO; - goto failed; - } - message->dn = ldb_dn_new(message, ldb, (char *)p); - if (message->dn == NULL) { - errno = ENOMEM; - goto failed; - } - remaining -= len + 1; - p += len + 1; - break; - - default: - errno = EIO; - goto failed; - } - - if (message->num_elements == 0) { - message->elements = NULL; - return 0; - } - - if (message->num_elements > remaining / 6) { - errno = EIO; - goto failed; - } - - message->elements = talloc_array(message, struct ldb_message_element, message->num_elements); - if (!message->elements) { - errno = ENOMEM; - goto failed; - } - - memset(message->elements, 0, - message->num_elements * sizeof(struct ldb_message_element)); - - for (i=0;i<message->num_elements;i++) { - if (remaining < 10) { - errno = EIO; - goto failed; - } - len = strnlen((char *)p, remaining-6); - if (len == remaining-6) { - errno = EIO; - goto failed; - } - message->elements[i].flags = 0; - message->elements[i].name = talloc_strndup(message->elements, (char *)p, len); - if (message->elements[i].name == NULL) { - errno = ENOMEM; - goto failed; - } - remaining -= len + 1; - p += len + 1; - message->elements[i].num_values = pull_uint32(p, 0); - message->elements[i].values = NULL; - if (message->elements[i].num_values != 0) { - message->elements[i].values = talloc_array(message->elements, - struct ldb_val, - message->elements[i].num_values); - if (!message->elements[i].values) { - errno = ENOMEM; - goto failed; - } - } - p += 4; - remaining -= 4; - for (j=0;j<message->elements[i].num_values;j++) { - len = pull_uint32(p, 0); - if (len > remaining-5) { - errno = EIO; - goto failed; - } - - message->elements[i].values[j].length = len; - message->elements[i].values[j].data = talloc_size(message->elements[i].values, len+1); - if (message->elements[i].values[j].data == NULL) { - errno = ENOMEM; - goto failed; - } - memcpy(message->elements[i].values[j].data, p+4, len); - message->elements[i].values[j].data[len] = 0; - - remaining -= len+4+1; - p += len+4+1; - } - } - - if (remaining != 0) { - ldb_debug(ldb, LDB_DEBUG_ERROR, - "Error: %d bytes unread in ltdb_unpack_data\n", remaining); - } - - return 0; - -failed: - talloc_free(message->elements); - return -1; -} diff --git a/ldb/ldb_tdb/ldb_search.c b/ldb/ldb_tdb/ldb_search.c deleted file mode 100644 index 35149c4b7..000000000 --- a/ldb/ldb_tdb/ldb_search.c +++ /dev/null @@ -1,551 +0,0 @@ -/* - ldb database library - - Copyright (C) Andrew Tridgell 2004 - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, see <http://www.gnu.org/licenses/>. -*/ - -/* - * Name: ldb - * - * Component: ldb search functions - * - * Description: functions to search ldb+tdb databases - * - * Author: Andrew Tridgell - */ - -#include "ldb_includes.h" - -#include "ldb_tdb.h" - -/* - add one element to a message -*/ -static int msg_add_element(struct ldb_message *ret, - const struct ldb_message_element *el, - int check_duplicates) -{ - unsigned int i; - struct ldb_message_element *e2, *elnew; - - if (check_duplicates && ldb_msg_find_element(ret, el->name)) { - /* its already there */ - return 0; - } - - e2 = talloc_realloc(ret, ret->elements, struct ldb_message_element, ret->num_elements+1); - if (!e2) { - return -1; - } - ret->elements = e2; - - elnew = &e2[ret->num_elements]; - - elnew->name = talloc_strdup(ret->elements, el->name); - if (!elnew->name) { - return -1; - } - - if (el->num_values) { - elnew->values = talloc_array(ret->elements, struct ldb_val, el->num_values); - if (!elnew->values) { - return -1; - } - } else { - elnew->values = NULL; - } - - for (i=0;i<el->num_values;i++) { - elnew->values[i] = ldb_val_dup(elnew->values, &el->values[i]); - if (elnew->values[i].length != el->values[i].length) { - return -1; - } - } - - elnew->num_values = el->num_values; - - ret->num_elements++; - - return 0; -} - -/* - add the special distinguishedName element -*/ -static int msg_add_distinguished_name(struct ldb_message *msg) -{ - struct ldb_message_element el; - struct ldb_val val; - int ret; - - el.flags = 0; - el.name = "distinguishedName"; - el.num_values = 1; - el.values = &val; - val.data = (uint8_t *)ldb_dn_alloc_linearized(msg, msg->dn); - val.length = strlen((char *)val.data); - - ret = msg_add_element(msg, &el, 1); - return ret; -} - -/* - add all elements from one message into another - */ -static int msg_add_all_elements(struct ldb_module *module, struct ldb_message *ret, - const struct ldb_message *msg) -{ - struct ldb_context *ldb = module->ldb; - unsigned int i; - int check_duplicates = (ret->num_elements != 0); - - if (msg_add_distinguished_name(ret) != 0) { - return -1; - } - - 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); - if (a->flags & LDB_ATTR_FLAG_HIDDEN) { - continue; - } - if (msg_add_element(ret, &msg->elements[i], - check_duplicates) != 0) { - return -1; - } - } - - return 0; -} - - -/* - pull the specified list of attributes from a message - */ -static struct ldb_message *ltdb_pull_attrs(struct ldb_module *module, - TALLOC_CTX *mem_ctx, - const struct ldb_message *msg, - const char * const *attrs) -{ - struct ldb_message *ret; - int i; - - ret = talloc(mem_ctx, struct ldb_message); - if (!ret) { - return NULL; - } - - ret->dn = ldb_dn_copy(ret, msg->dn); - if (!ret->dn) { - talloc_free(ret); - return NULL; - } - - ret->num_elements = 0; - ret->elements = NULL; - - if (!attrs) { - if (msg_add_all_elements(module, ret, msg) != 0) { - talloc_free(ret); - return NULL; - } - return ret; - } - - for (i=0;attrs[i];i++) { - struct ldb_message_element *el; - - if (strcmp(attrs[i], "*") == 0) { - if (msg_add_all_elements(module, ret, msg) != 0) { - talloc_free(ret); - return NULL; - } - continue; - } - - if (ldb_attr_cmp(attrs[i], "distinguishedName") == 0) { - if (msg_add_distinguished_name(ret) != 0) { - return NULL; - } - continue; - } - - el = ldb_msg_find_element(msg, attrs[i]); - if (!el) { - continue; - } - if (msg_add_element(ret, el, 1) != 0) { - talloc_free(ret); - return NULL; - } - } - - return ret; -} - -/* - search the database for a single simple dn. - return LDB_ERR_NO_SUCH_OBJECT on record-not-found - and LDB_SUCCESS on success -*/ -static int ltdb_search_base(struct ldb_module *module, struct ldb_dn *dn) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - TDB_DATA tdb_key, tdb_data; - - if (ldb_dn_is_null(dn)) { - return LDB_ERR_NO_SUCH_OBJECT; - } - - /* form the key */ - tdb_key = ltdb_key(module, dn); - if (!tdb_key.dptr) { - return LDB_ERR_OPERATIONS_ERROR; - } - - tdb_data = tdb_fetch(ltdb->tdb, tdb_key); - talloc_free(tdb_key.dptr); - if (!tdb_data.dptr) { - return LDB_ERR_NO_SUCH_OBJECT; - } - - free(tdb_data.dptr); - return LDB_SUCCESS; -} - -/* - search the database for a single simple dn, returning all attributes - in a single message - - return LDB_ERR_NO_SUCH_OBJECT on record-not-found - and LDB_SUCCESS on success -*/ -int ltdb_search_dn1(struct ldb_module *module, struct ldb_dn *dn, struct ldb_message *msg) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - int ret; - TDB_DATA tdb_key, tdb_data; - - memset(msg, 0, sizeof(*msg)); - - /* form the key */ - tdb_key = ltdb_key(module, dn); - if (!tdb_key.dptr) { - return LDB_ERR_OPERATIONS_ERROR; - } - - tdb_data = tdb_fetch(ltdb->tdb, tdb_key); - talloc_free(tdb_key.dptr); - if (!tdb_data.dptr) { - return LDB_ERR_NO_SUCH_OBJECT; - } - - msg->num_elements = 0; - msg->elements = NULL; - - ret = ltdb_unpack_data(module, &tdb_data, msg); - free(tdb_data.dptr); - if (ret == -1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - if (!msg->dn) { - msg->dn = ldb_dn_copy(msg, dn); - } - if (!msg->dn) { - return LDB_ERR_OPERATIONS_ERROR; - } - - return LDB_SUCCESS; -} - -/* - add a set of attributes from a record to a set of results - return 0 on success, -1 on failure -*/ -int ltdb_add_attr_results(struct ldb_module *module, - TALLOC_CTX *mem_ctx, - struct ldb_message *msg, - const char * const attrs[], - unsigned int *count, - struct ldb_message ***res) -{ - struct ldb_message *msg2; - struct ldb_message **res2; - - /* pull the attributes that the user wants */ - msg2 = ltdb_pull_attrs(module, mem_ctx, msg, attrs); - if (!msg2) { - return -1; - } - - /* add to the results list */ - res2 = talloc_realloc(mem_ctx, *res, struct ldb_message *, (*count)+2); - if (!res2) { - talloc_free(msg2); - return -1; - } - - (*res) = res2; - - (*res)[*count] = talloc_move(*res, &msg2); - (*res)[(*count)+1] = NULL; - (*count)++; - - return 0; -} - - - -/* - filter the specified list of attributes from a message - removing not requested attrs. - */ -int ltdb_filter_attrs(struct ldb_message *msg, const char * const *attrs) -{ - int i, keep_all = 0; - - if (attrs) { - /* check for special attrs */ - for (i = 0; attrs[i]; i++) { - if (strcmp(attrs[i], "*") == 0) { - keep_all = 1; - break; - } - - if (ldb_attr_cmp(attrs[i], "distinguishedName") == 0) { - if (msg_add_distinguished_name(msg) != 0) { - return -1; - } - } - } - } else { - keep_all = 1; - } - - if (keep_all) { - if (msg_add_distinguished_name(msg) != 0) { - return -1; - } - return 0; - } - - for (i = 0; i < msg->num_elements; i++) { - int j, found; - - for (j = 0, found = 0; attrs[j]; j++) { - if (ldb_attr_cmp(msg->elements[i].name, attrs[j]) == 0) { - found = 1; - break; - } - } - - if (!found) { - ldb_msg_remove_attr(msg, msg->elements[i].name); - i--; - } - } - - return 0; -} - -/* - search function for a non-indexed search - */ -static int search_func(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state) -{ - struct ltdb_context *ac; - struct ldb_message *msg; - int ret; - - ac = talloc_get_type(state, struct ltdb_context); - - if (key.dsize < 4 || - strncmp((char *)key.dptr, "DN=", 3) != 0) { - return 0; - } - - msg = ldb_msg_new(ac); - if (!msg) { - return -1; - } - - /* unpack the record */ - ret = ltdb_unpack_data(ac->module, &data, msg); - if (ret == -1) { - talloc_free(msg); - return -1; - } - - if (!msg->dn) { - msg->dn = ldb_dn_new(msg, ac->module->ldb, - (char *)key.dptr + 3); - if (msg->dn == NULL) { - talloc_free(msg); - return -1; - } - } - - /* see if it matches the given expression */ - if (!ldb_match_msg(ac->module->ldb, msg, - ac->tree, ac->base, ac->scope)) { - talloc_free(msg); - return 0; - } - - /* filter the attributes that the user wants */ - ret = ltdb_filter_attrs(msg, ac->attrs); - - if (ret == -1) { - talloc_free(msg); - return -1; - } - - ret = ldb_module_send_entry(ac->req, msg, NULL); - if (ret != LDB_SUCCESS) { - ac->callback_failed = true; - /* the callback failed, abort the operation */ - return -1; - } - - return 0; -} - - -/* - search the database with a LDAP-like expression. - this is the "full search" non-indexed variant -*/ -static int ltdb_search_full(struct ltdb_context *ctx) -{ - struct ltdb_private *ltdb = talloc_get_type(ctx->module->private_data, struct ltdb_private); - int ret; - - if (ltdb->in_transaction != 0) { - ret = tdb_traverse(ltdb->tdb, search_func, ctx); - } else { - ret = tdb_traverse_read(ltdb->tdb, search_func, ctx); - } - - if (ret == -1) { - return LDB_ERR_OPERATIONS_ERROR; - } - - return LDB_SUCCESS; -} - -/* - search the database with a LDAP-like expression. - choses a search method -*/ -int ltdb_search(struct ltdb_context *ctx) -{ - struct ldb_module *module = ctx->module; - struct ldb_request *req = ctx->req; - struct ltdb_private *ltdb = talloc_get_type(module->private_data, struct ltdb_private); - int ret; - - req->handle->state = LDB_ASYNC_PENDING; - - if (ltdb_lock_read(module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - if (ltdb_cache_load(module) != 0) { - ltdb_unlock_read(module); - return LDB_ERR_OPERATIONS_ERROR; - } - - if (req->op.search.tree == NULL) { - ltdb_unlock_read(module); - return LDB_ERR_OPERATIONS_ERROR; - } - - if ((req->op.search.base == NULL) || (ldb_dn_is_null(req->op.search.base) == true)) { - - /* Check what we should do with a NULL dn */ - switch (req->op.search.scope) { - case LDB_SCOPE_BASE: - ldb_asprintf_errstring(module->ldb, - "NULL Base DN invalid for a base search"); - ret = LDB_ERR_INVALID_DN_SYNTAX; - break; - case LDB_SCOPE_ONELEVEL: - ldb_asprintf_errstring(module->ldb, - "NULL Base DN invalid for a one-level search"); - ret = LDB_ERR_INVALID_DN_SYNTAX; - break; - case LDB_SCOPE_SUBTREE: - default: - /* We accept subtree searches from a NULL base DN, ie over the whole DB */ - ret = LDB_SUCCESS; - } - } else if (ldb_dn_is_valid(req->op.search.base) == false) { - - /* We don't want invalid base DNs here */ - ldb_asprintf_errstring(module->ldb, - "Invalid Base DN: %s", - ldb_dn_get_linearized(req->op.search.base)); - ret = LDB_ERR_INVALID_DN_SYNTAX; - - } else if (ltdb->check_base) { - /* This database has been marked as 'checkBaseOnSearch', so do a spot check of the base dn */ - ret = ltdb_search_base(module, req->op.search.base); - - if (ret == LDB_ERR_NO_SUCH_OBJECT) { - ldb_asprintf_errstring(module->ldb, - "No such Base DN: %s", - ldb_dn_get_linearized(req->op.search.base)); - } - - } else { - /* If we are not checking the base DN life is easy */ - ret = LDB_SUCCESS; - } - - ctx->tree = req->op.search.tree; - ctx->scope = req->op.search.scope; - ctx->base = req->op.search.base; - ctx->attrs = req->op.search.attrs; - - if (ret == LDB_SUCCESS) { - ret = ltdb_search_indexed(ctx); - if (ret == LDB_ERR_NO_SUCH_OBJECT) { - /* Not in the index, therefore OK! */ - ret = LDB_SUCCESS; - - } - /* Check if we got just a normal error. - * In that case proceed to a full search unless we got a - * callback error */ - if ( ! ctx->callback_failed && ret != LDB_SUCCESS) { - /* Not indexed, so we need to do a full scan */ - ret = ltdb_search_full(ctx); - if (ret != LDB_SUCCESS) { - ldb_set_errstring(module->ldb, "Indexed and full searches both failed!\n"); - } - } - } - - ltdb_unlock_read(module); - - return ret; -} - diff --git a/ldb/ldb_tdb/ldb_tdb.c b/ldb/ldb_tdb/ldb_tdb.c deleted file mode 100644 index ea460def6..000000000 --- a/ldb/ldb_tdb/ldb_tdb.c +++ /dev/null @@ -1,1236 +0,0 @@ -/* - ldb database library - - Copyright (C) Andrew Tridgell 2004 - Copyright (C) Stefan Metzmacher 2004 - Copyright (C) Simo Sorce 2006-2008 - - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, see <http://www.gnu.org/licenses/>. -*/ - -/* - * Name: ldb_tdb - * - * Component: ldb tdb backend - * - * Description: core functions for tdb backend - * - * Author: Andrew Tridgell - * Author: Stefan Metzmacher - * - * Modifications: - * - * - description: make the module use asyncronous calls - * date: Feb 2006 - * Author: Simo Sorce - * - * - description: make it possible to use event contexts - * date: Jan 2008 - * Author: Simo Sorce - */ - -#include "ldb_includes.h" - -#include "ldb_tdb.h" - - -/* - map a tdb error code to a ldb error code -*/ -static int ltdb_err_map(enum TDB_ERROR tdb_code) -{ - switch (tdb_code) { - case TDB_SUCCESS: - return LDB_SUCCESS; - case TDB_ERR_CORRUPT: - case TDB_ERR_OOM: - case TDB_ERR_EINVAL: - return LDB_ERR_OPERATIONS_ERROR; - case TDB_ERR_IO: - return LDB_ERR_PROTOCOL_ERROR; - case TDB_ERR_LOCK: - case TDB_ERR_NOLOCK: - return LDB_ERR_BUSY; - case TDB_ERR_LOCK_TIMEOUT: - return LDB_ERR_TIME_LIMIT_EXCEEDED; - case TDB_ERR_EXISTS: - return LDB_ERR_ENTRY_ALREADY_EXISTS; - case TDB_ERR_NOEXIST: - return LDB_ERR_NO_SUCH_OBJECT; - case TDB_ERR_RDONLY: - return LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS; - } - return LDB_ERR_OTHER; -} - -/* - lock the database for read - use by ltdb_search and ltdb_sequence_number -*/ -int ltdb_lock_read(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - if (ltdb->in_transaction == 0) { - return tdb_lockall_read(ltdb->tdb); - } - return 0; -} - -/* - unlock the database after a ltdb_lock_read() -*/ -int ltdb_unlock_read(struct ldb_module *module) -{ - struct ltdb_private *ltdb = (struct ltdb_private *)module->private_data; - if (ltdb->in_transaction == 0) { - return tdb_unlockall_read(ltdb->tdb); - } - return 0; -} - - -/* - form a TDB_DATA for a record key - caller frees - - note that the key for a record can depend on whether the - dn refers to a case sensitive index record or not -*/ -struct TDB_DATA ltdb_key(struct ldb_module *module, struct ldb_dn *dn) -{ - struct ldb_context *ldb = module->ldb; - TDB_DATA key; - char *key_str = NULL; - const char *dn_folded = NULL; - - /* - most DNs are case insensitive. The exception is index DNs for - case sensitive attributes - - there are 3 cases dealt with in this code: - - 1) if the dn doesn't start with @ then uppercase the attribute - names and the attributes values of case insensitive attributes - 2) if the dn starts with @ then leave it alone - - the indexing code handles the rest - */ - - dn_folded = ldb_dn_get_casefold(dn); - if (!dn_folded) { - goto failed; - } - - key_str = talloc_strdup(ldb, "DN="); - if (!key_str) { - goto failed; - } - - key_str = talloc_strdup_append_buffer(key_str, dn_folded); - if (!key_str) { - goto failed; - } - - key.dptr = (uint8_t *)key_str; - key.dsize = strlen(key_str) + 1; - - return key; - -failed: - errno = ENOMEM; - key.dptr = NULL; - key.dsize = 0; - return key; -} - -/* - check special dn's have valid attributes - currently only @ATTRIBUTES is checked -*/ -static int ltdb_check_special_dn(struct ldb_module *module, - const struct ldb_message *msg) -{ - int i, j; - - if (! ldb_dn_is_special(msg->dn) || - ! ldb_dn_check_special(msg->dn, LTDB_ATTRIBUTES)) { - return 0; - } - - /* we have @ATTRIBUTES, let's check attributes are fine */ - /* should we check that we deny multivalued attributes ? */ - for (i = 0; i < msg->num_elements; i++) { - for (j = 0; j < msg->elements[i].num_values; j++) { - if (ltdb_check_at_attributes_values(&msg->elements[i].values[j]) != 0) { - ldb_set_errstring(module->ldb, "Invalid attribute value in an @ATTRIBUTES entry"); - return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX; - } - } - } - - return 0; -} - - -/* - we've made a modification to a dn - possibly reindex and - update sequence number -*/ -static int ltdb_modified(struct ldb_module *module, struct ldb_dn *dn) -{ - int ret = LDB_SUCCESS; - - if (ldb_dn_is_special(dn) && - (ldb_dn_check_special(dn, LTDB_INDEXLIST) || - ldb_dn_check_special(dn, LTDB_ATTRIBUTES)) ) { - ret = ltdb_reindex(module); - } - - if (ret == LDB_SUCCESS && - !(ldb_dn_is_special(dn) && - ldb_dn_check_special(dn, LTDB_BASEINFO)) ) { - ret = ltdb_increase_sequence_number(module); - } - - return ret; -} - -/* - store a record into the db -*/ -int ltdb_store(struct ldb_module *module, const struct ldb_message *msg, int flgs) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - TDB_DATA tdb_key, tdb_data; - int ret; - - tdb_key = ltdb_key(module, msg->dn); - if (!tdb_key.dptr) { - return LDB_ERR_OTHER; - } - - ret = ltdb_pack_data(module, msg, &tdb_data); - if (ret == -1) { - talloc_free(tdb_key.dptr); - return LDB_ERR_OTHER; - } - - ret = tdb_store(ltdb->tdb, tdb_key, tdb_data, flgs); - if (ret == -1) { - ret = ltdb_err_map(tdb_error(ltdb->tdb)); - goto done; - } - - ret = ltdb_index_add(module, msg); - if (ret != LDB_SUCCESS) { - tdb_delete(ltdb->tdb, tdb_key); - } - -done: - talloc_free(tdb_key.dptr); - talloc_free(tdb_data.dptr); - - return ret; -} - - -static int ltdb_add_internal(struct ldb_module *module, - const struct ldb_message *msg) -{ - int ret; - - ret = ltdb_check_special_dn(module, msg); - if (ret != LDB_SUCCESS) { - return ret; - } - - if (ltdb_cache_load(module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ltdb_store(module, msg, TDB_INSERT); - - if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) { - ldb_asprintf_errstring(module->ldb, - "Entry %s already exists", - ldb_dn_get_linearized(msg->dn)); - return ret; - } - - if (ret == LDB_SUCCESS) { - ret = ltdb_index_one(module, msg, 1); - if (ret != LDB_SUCCESS) { - return ret; - } - - ret = ltdb_modified(module, msg->dn); - if (ret != LDB_SUCCESS) { - return ret; - } - } - - return ret; -} - -/* - add a record to the database -*/ -static int ltdb_add(struct ltdb_context *ctx) -{ - struct ldb_module *module = ctx->module; - struct ldb_request *req = ctx->req; - int tret; - - req->handle->state = LDB_ASYNC_PENDING; - - tret = ltdb_add_internal(module, req->op.add.message); - if (tret != LDB_SUCCESS) { - return tret; - } - - return LDB_SUCCESS; -} - -/* - delete a record from the database, not updating indexes (used for deleting - index records) -*/ -int ltdb_delete_noindex(struct ldb_module *module, struct ldb_dn *dn) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - TDB_DATA tdb_key; - int ret; - - tdb_key = ltdb_key(module, dn); - if (!tdb_key.dptr) { - return LDB_ERR_OTHER; - } - - ret = tdb_delete(ltdb->tdb, tdb_key); - talloc_free(tdb_key.dptr); - - if (ret != 0) { - ret = ltdb_err_map(tdb_error(ltdb->tdb)); - } - - return ret; -} - -static int ltdb_delete_internal(struct ldb_module *module, struct ldb_dn *dn) -{ - struct ldb_message *msg; - int ret; - - msg = talloc(module, struct ldb_message); - if (msg == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* in case any attribute of the message was indexed, we need - to fetch the old record */ - ret = ltdb_search_dn1(module, dn, msg); - if (ret != LDB_SUCCESS) { - /* not finding the old record is an error */ - goto done; - } - - ret = ltdb_delete_noindex(module, dn); - if (ret != LDB_SUCCESS) { - goto done; - } - - /* remove one level attribute */ - ret = ltdb_index_one(module, msg, 0); - if (ret != LDB_SUCCESS) { - goto done; - } - - /* remove any indexed attributes */ - ret = ltdb_index_del(module, msg); - if (ret != LDB_SUCCESS) { - goto done; - } - - ret = ltdb_modified(module, dn); - if (ret != LDB_SUCCESS) { - goto done; - } - -done: - talloc_free(msg); - return ret; -} - -/* - delete a record from the database -*/ -static int ltdb_delete(struct ltdb_context *ctx) -{ - struct ldb_module *module = ctx->module; - struct ldb_request *req = ctx->req; - int tret; - - req->handle->state = LDB_ASYNC_PENDING; - - if (ltdb_cache_load(module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - tret = ltdb_delete_internal(module, req->op.del.dn); - if (tret != LDB_SUCCESS) { - return tret; - } - - return LDB_SUCCESS; -} - -/* - find an element by attribute name. At the moment this does a linear search, - it should be re-coded to use a binary search once all places that modify - records guarantee sorted order - - return the index of the first matching element if found, otherwise -1 -*/ -static int find_element(const struct ldb_message *msg, const char *name) -{ - unsigned int i; - for (i=0;i<msg->num_elements;i++) { - if (ldb_attr_cmp(msg->elements[i].name, name) == 0) { - return i; - } - } - return -1; -} - - -/* - add an element to an existing record. Assumes a elements array that we - can call re-alloc on, and assumed that we can re-use the data pointers from - the passed in additional values. Use with care! - - returns 0 on success, -1 on failure (and sets errno) -*/ -static int msg_add_element(struct ldb_context *ldb, - struct ldb_message *msg, - struct ldb_message_element *el) -{ - struct ldb_message_element *e2; - unsigned int i; - - e2 = talloc_realloc(msg, msg->elements, struct ldb_message_element, - msg->num_elements+1); - if (!e2) { - errno = ENOMEM; - return -1; - } - - msg->elements = e2; - - e2 = &msg->elements[msg->num_elements]; - - e2->name = el->name; - e2->flags = el->flags; - e2->values = NULL; - if (el->num_values != 0) { - e2->values = talloc_array(msg->elements, - struct ldb_val, el->num_values); - if (!e2->values) { - errno = ENOMEM; - return -1; - } - } - for (i=0;i<el->num_values;i++) { - e2->values[i] = el->values[i]; - } - e2->num_values = el->num_values; - - msg->num_elements++; - - return 0; -} - -/* - delete all elements having a specified attribute name -*/ -static int msg_delete_attribute(struct ldb_module *module, - struct ldb_context *ldb, - struct ldb_message *msg, const char *name) -{ - const char *dn; - unsigned int i, j; - - dn = ldb_dn_get_linearized(msg->dn); - if (dn == NULL) { - return -1; - } - - for (i=0;i<msg->num_elements;i++) { - if (ldb_attr_cmp(msg->elements[i].name, name) == 0) { - for (j=0;j<msg->elements[i].num_values;j++) { - ltdb_index_del_value(module, dn, - &msg->elements[i], j); - } - talloc_free(msg->elements[i].values); - if (msg->num_elements > (i+1)) { - memmove(&msg->elements[i], - &msg->elements[i+1], - sizeof(struct ldb_message_element)* - (msg->num_elements - (i+1))); - } - msg->num_elements--; - i--; - msg->elements = talloc_realloc(msg, msg->elements, - struct ldb_message_element, - msg->num_elements); - } - } - - return 0; -} - -/* - delete all elements matching an attribute name/value - - return 0 on success, -1 on failure -*/ -static int msg_delete_element(struct ldb_module *module, - struct ldb_message *msg, - const char *name, - const struct ldb_val *val) -{ - struct ldb_context *ldb = module->ldb; - unsigned int i; - int found; - struct ldb_message_element *el; - const struct ldb_schema_attribute *a; - - found = find_element(msg, name); - if (found == -1) { - return -1; - } - - el = &msg->elements[found]; - - a = ldb_schema_attribute_by_name(ldb, el->name); - - for (i=0;i<el->num_values;i++) { - if (a->syntax->comparison_fn(ldb, ldb, - &el->values[i], val) == 0) { - if (i<el->num_values-1) { - memmove(&el->values[i], &el->values[i+1], - sizeof(el->values[i])* - (el->num_values-(i+1))); - } - el->num_values--; - if (el->num_values == 0) { - return msg_delete_attribute(module, ldb, - msg, name); - } - return 0; - } - } - - return -1; -} - - -/* - modify a record - internal interface - - yuck - this is O(n^2). Luckily n is usually small so we probably - get away with it, but if we ever have really large attribute lists - then we'll need to look at this again -*/ -int ltdb_modify_internal(struct ldb_module *module, - const struct ldb_message *msg) -{ - struct ldb_context *ldb = module->ldb; - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - TDB_DATA tdb_key, tdb_data; - struct ldb_message *msg2; - unsigned i, j; - int ret, idx; - - tdb_key = ltdb_key(module, msg->dn); - if (!tdb_key.dptr) { - return LDB_ERR_OTHER; - } - - tdb_data = tdb_fetch(ltdb->tdb, tdb_key); - if (!tdb_data.dptr) { - talloc_free(tdb_key.dptr); - return ltdb_err_map(tdb_error(ltdb->tdb)); - } - - msg2 = talloc(tdb_key.dptr, struct ldb_message); - if (msg2 == NULL) { - talloc_free(tdb_key.dptr); - return LDB_ERR_OTHER; - } - - ret = ltdb_unpack_data(module, &tdb_data, msg2); - if (ret == -1) { - ret = LDB_ERR_OTHER; - goto failed; - } - - if (!msg2->dn) { - msg2->dn = msg->dn; - } - - for (i=0;i<msg->num_elements;i++) { - struct ldb_message_element *el = &msg->elements[i]; - struct ldb_message_element *el2; - struct ldb_val *vals; - const char *dn; - - switch (msg->elements[i].flags & LDB_FLAG_MOD_MASK) { - - case LDB_FLAG_MOD_ADD: - /* add this element to the message. fail if it - already exists */ - idx = find_element(msg2, el->name); - - if (idx == -1) { - if (msg_add_element(ldb, msg2, el) != 0) { - ret = LDB_ERR_OTHER; - goto failed; - } - continue; - } - - el2 = &msg2->elements[idx]; - - /* An attribute with this name already exists, - * add all values if they don't already exist - * (check both the other elements to be added, - * and those already in the db). */ - - for (j=0;j<el->num_values;j++) { - if (ldb_msg_find_val(el2, &el->values[j])) { - ldb_asprintf_errstring(module->ldb, "%s: value #%d already exists", el->name, j); - ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS; - goto failed; - } - if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) { - ldb_asprintf_errstring(module->ldb, "%s: value #%d provided more than once", el->name, j); - ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS; - goto failed; - } - } - - vals = talloc_realloc(msg2->elements, el2->values, struct ldb_val, - el2->num_values + el->num_values); - - if (vals == NULL) { - ret = LDB_ERR_OTHER; - goto failed; - } - - for (j=0;j<el->num_values;j++) { - vals[el2->num_values + j] = - ldb_val_dup(vals, &el->values[j]); - } - - el2->values = vals; - el2->num_values += el->num_values; - - break; - - case LDB_FLAG_MOD_REPLACE: - /* replace all elements of this attribute name with the elements - listed. The attribute not existing is not an error */ - msg_delete_attribute(module, ldb, msg2, el->name); - - for (j=0;j<el->num_values;j++) { - if (ldb_msg_find_val(el, &el->values[j]) != &el->values[j]) { - ldb_asprintf_errstring(module->ldb, "%s: value #%d provided more than once", el->name, j); - ret = LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS; - goto failed; - } - } - - /* add the replacement element, if not empty */ - if (el->num_values != 0 && - msg_add_element(ldb, msg2, el) != 0) { - ret = LDB_ERR_OTHER; - goto failed; - } - break; - - case LDB_FLAG_MOD_DELETE: - - dn = ldb_dn_get_linearized(msg->dn); - if (dn == NULL) { - ret = LDB_ERR_OTHER; - goto failed; - } - - /* we could be being asked to delete all - values or just some values */ - if (msg->elements[i].num_values == 0) { - if (msg_delete_attribute(module, ldb, msg2, - msg->elements[i].name) != 0) { - ldb_asprintf_errstring(module->ldb, "No such attribute: %s for delete on %s", msg->elements[i].name, dn); - ret = LDB_ERR_NO_SUCH_ATTRIBUTE; - goto failed; - } - break; - } - for (j=0;j<msg->elements[i].num_values;j++) { - if (msg_delete_element(module, - msg2, - msg->elements[i].name, - &msg->elements[i].values[j]) != 0) { - ldb_asprintf_errstring(module->ldb, "No matching attribute value when deleting attribute: %s on %s", msg->elements[i].name, dn); - ret = LDB_ERR_NO_SUCH_ATTRIBUTE; - goto failed; - } - ret = ltdb_index_del_value(module, dn, &msg->elements[i], j); - if (ret != LDB_SUCCESS) { - goto failed; - } - } - break; - default: - ldb_asprintf_errstring(module->ldb, - "Invalid ldb_modify flags on %s: 0x%x", - msg->elements[i].name, - msg->elements[i].flags & LDB_FLAG_MOD_MASK); - ret = LDB_ERR_PROTOCOL_ERROR; - goto failed; - } - } - - /* we've made all the mods - * save the modified record back into the database */ - ret = ltdb_store(module, msg2, TDB_MODIFY); - if (ret != LDB_SUCCESS) { - goto failed; - } - - ret = ltdb_modified(module, msg->dn); - if (ret != LDB_SUCCESS) { - goto failed; - } - - talloc_free(tdb_key.dptr); - free(tdb_data.dptr); - return ret; - -failed: - talloc_free(tdb_key.dptr); - free(tdb_data.dptr); - return ret; -} - -/* - modify a record -*/ -static int ltdb_modify(struct ltdb_context *ctx) -{ - struct ldb_module *module = ctx->module; - struct ldb_request *req = ctx->req; - int tret; - - req->handle->state = LDB_ASYNC_PENDING; - - tret = ltdb_check_special_dn(module, req->op.mod.message); - if (tret != LDB_SUCCESS) { - return tret; - } - - if (ltdb_cache_load(module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - tret = ltdb_modify_internal(module, req->op.mod.message); - if (tret != LDB_SUCCESS) { - return tret; - } - - return LDB_SUCCESS; -} - -/* - rename a record -*/ -static int ltdb_rename(struct ltdb_context *ctx) -{ - struct ldb_module *module = ctx->module; - struct ldb_request *req = ctx->req; - struct ldb_message *msg; - int tret; - - req->handle->state = LDB_ASYNC_PENDING; - - if (ltdb_cache_load(ctx->module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - msg = talloc(ctx, struct ldb_message); - if (msg == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - /* in case any attribute of the message was indexed, we need - to fetch the old record */ - tret = ltdb_search_dn1(module, req->op.rename.olddn, msg); - if (tret != LDB_SUCCESS) { - /* not finding the old record is an error */ - return tret; - } - - msg->dn = ldb_dn_copy(msg, req->op.rename.newdn); - if (!msg->dn) { - return LDB_ERR_OPERATIONS_ERROR; - } - - if (ldb_dn_compare(req->op.rename.olddn, req->op.rename.newdn) == 0) { - /* The rename operation is apparently only changing case - - the DNs are the same. Delete the old DN before adding - the new one to avoid a TDB_ERR_EXISTS error. - - The only drawback to this is that if the delete - succeeds but the add fails, we rely on the - transaction to roll this all back. */ - tret = ltdb_delete_internal(module, req->op.rename.olddn); - if (tret != LDB_SUCCESS) { - return tret; - } - - tret = ltdb_add_internal(module, msg); - if (tret != LDB_SUCCESS) { - return tret; - } - } else { - /* The rename operation is changing DNs. Try to add the new - DN first to avoid clobbering another DN not related to - this rename operation. */ - tret = ltdb_add_internal(module, msg); - if (tret != LDB_SUCCESS) { - return tret; - } - - tret = ltdb_delete_internal(module, req->op.rename.olddn); - if (tret != LDB_SUCCESS) { - ltdb_delete_internal(module, req->op.rename.newdn); - return LDB_ERR_OPERATIONS_ERROR; - } - } - - return LDB_SUCCESS; -} - -static int ltdb_start_trans(struct ldb_module *module) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - - if (tdb_transaction_start(ltdb->tdb) != 0) { - return ltdb_err_map(tdb_error(ltdb->tdb)); - } - - ltdb->in_transaction++; - - ltdb_index_transaction_start(module); - - return LDB_SUCCESS; -} - -static int ltdb_end_trans(struct ldb_module *module) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - - ltdb->in_transaction--; - - if (ltdb_index_transaction_commit(module) != 0) { - return ltdb_err_map(tdb_error(ltdb->tdb)); - } - - if (tdb_transaction_commit(ltdb->tdb) != 0) { - return ltdb_err_map(tdb_error(ltdb->tdb)); - } - - return LDB_SUCCESS; -} - -static int ltdb_del_trans(struct ldb_module *module) -{ - struct ltdb_private *ltdb = - talloc_get_type(module->private_data, struct ltdb_private); - - ltdb->in_transaction--; - - if (ltdb_index_transaction_cancel(module) != 0) { - return ltdb_err_map(tdb_error(ltdb->tdb)); - } - - if (tdb_transaction_cancel(ltdb->tdb) != 0) { - return ltdb_err_map(tdb_error(ltdb->tdb)); - } - - return LDB_SUCCESS; -} - -/* - return sequenceNumber from @BASEINFO -*/ -static int ltdb_sequence_number(struct ltdb_context *ctx, - struct ldb_extended **ext) -{ - struct ldb_module *module = ctx->module; - struct ldb_request *req = ctx->req; - TALLOC_CTX *tmp_ctx; - struct ldb_seqnum_request *seq; - struct ldb_seqnum_result *res; - struct ldb_message *msg = NULL; - struct ldb_dn *dn; - const char *date; - int ret; - - seq = talloc_get_type(req->op.extended.data, - struct ldb_seqnum_request); - if (seq == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - req->handle->state = LDB_ASYNC_PENDING; - - if (ltdb_lock_read(module) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - - res = talloc_zero(req, struct ldb_seqnum_result); - if (res == NULL) { - ret = LDB_ERR_OPERATIONS_ERROR; - goto done; - } - tmp_ctx = talloc_new(req); - if (tmp_ctx == NULL) { - ret = LDB_ERR_OPERATIONS_ERROR; - goto done; - } - - dn = ldb_dn_new(tmp_ctx, module->ldb, LTDB_BASEINFO); - - msg = talloc(tmp_ctx, struct ldb_message); - if (msg == NULL) { - ret = LDB_ERR_OPERATIONS_ERROR; - goto done; - } - - ret = ltdb_search_dn1(module, dn, msg); - if (ret != LDB_SUCCESS) { - goto done; - } - - switch (seq->type) { - case LDB_SEQ_HIGHEST_SEQ: - res->seq_num = ldb_msg_find_attr_as_uint64(msg, LTDB_SEQUENCE_NUMBER, 0); - break; - case LDB_SEQ_NEXT: - res->seq_num = ldb_msg_find_attr_as_uint64(msg, LTDB_SEQUENCE_NUMBER, 0); - res->seq_num++; - break; - case LDB_SEQ_HIGHEST_TIMESTAMP: - date = ldb_msg_find_attr_as_string(msg, LTDB_MOD_TIMESTAMP, NULL); - if (date) { - res->seq_num = ldb_string_to_time(date); - } else { - res->seq_num = 0; - /* zero is as good as anything when we don't know */ - } - break; - } - - *ext = talloc_zero(req, struct ldb_extended); - if (*ext == NULL) { - ret = LDB_ERR_OPERATIONS_ERROR; - goto done; - } - (*ext)->oid = LDB_EXTENDED_SEQUENCE_NUMBER; - (*ext)->data = talloc_steal(*ext, res); - - ret = LDB_SUCCESS; - -done: - talloc_free(tmp_ctx); - ltdb_unlock_read(module); - return ret; -} - -static void ltdb_request_done(struct ldb_request *req, int error) -{ - struct ldb_reply *ares; - - /* if we already returned an error just return */ - if (req->handle->status != LDB_SUCCESS) { - return; - } - - ares = talloc_zero(req, struct ldb_reply); - if (!ares) { - ldb_oom(req->handle->ldb); - req->callback(req, NULL); - return; - } - ares->type = LDB_REPLY_DONE; - ares->error = error; - - req->callback(req, ares); -} - -static void ltdb_timeout(struct event_context *ev, - struct timed_event *te, - struct timeval t, - void *private_data) -{ - struct ltdb_context *ctx; - ctx = talloc_get_type(private_data, struct ltdb_context); - - ltdb_request_done(ctx->req, LDB_ERR_TIME_LIMIT_EXCEEDED); -} - -static void ltdb_request_extended_done(struct ldb_request *req, - struct ldb_extended *ext, - int error) -{ - struct ldb_reply *ares; - - /* if we already returned an error just return */ - if (req->handle->status != LDB_SUCCESS) { - return; - } - - ares = talloc_zero(req, struct ldb_reply); - if (!ares) { - ldb_oom(req->handle->ldb); - req->callback(req, NULL); - return; - } - ares->type = LDB_REPLY_DONE; - ares->response = ext; - ares->error = error; - - req->callback(req, ares); -} - -static void ltdb_handle_extended(struct ltdb_context *ctx) -{ - struct ldb_extended *ext = NULL; - int ret; - - if (strcmp(ctx->req->op.extended.oid, - LDB_EXTENDED_SEQUENCE_NUMBER) == 0) { - /* get sequence number */ - ret = ltdb_sequence_number(ctx, &ext); - } else { - /* not recognized */ - ret = LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION; - } - - ltdb_request_extended_done(ctx->req, ext, ret); -} - -static void ltdb_callback(struct event_context *ev, - struct timed_event *te, - struct timeval t, - void *private_data) -{ - struct ltdb_context *ctx; - int ret; - - ctx = talloc_get_type(private_data, struct ltdb_context); - - switch (ctx->req->operation) { - case LDB_SEARCH: - ret = ltdb_search(ctx); - break; - case LDB_ADD: - ret = ltdb_add(ctx); - break; - case LDB_MODIFY: - ret = ltdb_modify(ctx); - break; - case LDB_DELETE: - ret = ltdb_delete(ctx); - break; - case LDB_RENAME: - ret = ltdb_rename(ctx); - break; - case LDB_EXTENDED: - ltdb_handle_extended(ctx); - return; - default: - /* no other op supported */ - ret = LDB_ERR_UNWILLING_TO_PERFORM; - } - - if (!ctx->callback_failed) { - /* Once we are done, we do not need timeout events */ - talloc_free(ctx->timeout_event); - ltdb_request_done(ctx->req, ret); - } -} - -static int ltdb_handle_request(struct ldb_module *module, - struct ldb_request *req) -{ - struct event_context *ev; - struct ltdb_context *ac; - struct timed_event *te; - struct timeval tv; - - if (check_critical_controls(req->controls)) { - return LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION; - } - - if (req->starttime == 0 || req->timeout == 0) { - ldb_set_errstring(module->ldb, "Invalid timeout settings"); - return LDB_ERR_TIME_LIMIT_EXCEEDED; - } - - ev = ldb_get_event_context(module->ldb); - - ac = talloc_zero(req, struct ltdb_context); - if (ac == NULL) { - ldb_set_errstring(module->ldb, "Out of Memory"); - return LDB_ERR_OPERATIONS_ERROR; - } - - ac->module = module; - ac->req = req; - - tv.tv_sec = 0; - tv.tv_usec = 0; - te = event_add_timed(ev, ac, tv, ltdb_callback, ac); - if (NULL == te) { - return LDB_ERR_OPERATIONS_ERROR; - } - - tv.tv_sec = req->starttime + req->timeout; - ac->timeout_event = event_add_timed(ev, ac, tv, ltdb_timeout, ac); - if (NULL == ac->timeout_event) { - return LDB_ERR_OPERATIONS_ERROR; - } - - return LDB_SUCCESS; -} - -static const struct ldb_module_ops ltdb_ops = { - .name = "tdb", - .search = ltdb_handle_request, - .add = ltdb_handle_request, - .modify = ltdb_handle_request, - .del = ltdb_handle_request, - .rename = ltdb_handle_request, - .extended = ltdb_handle_request, - .start_transaction = ltdb_start_trans, - .end_transaction = ltdb_end_trans, - .del_transaction = ltdb_del_trans, -}; - -/* - connect to the database -*/ -static int ltdb_connect(struct ldb_context *ldb, const char *url, - unsigned int flags, const char *options[], - struct ldb_module **module) -{ - const char *path; - int tdb_flags, open_flags; - struct ltdb_private *ltdb; - - /* parse the url */ - if (strchr(url, ':')) { - if (strncmp(url, "tdb://", 6) != 0) { - ldb_debug(ldb, LDB_DEBUG_ERROR, - "Invalid tdb URL '%s'", url); - return -1; - } - path = url+6; - } else { - path = url; - } - - tdb_flags = TDB_DEFAULT | TDB_SEQNUM; - - /* check for the 'nosync' option */ - if (flags & LDB_FLG_NOSYNC) { - tdb_flags |= TDB_NOSYNC; - } - - /* and nommap option */ - if (flags & LDB_FLG_NOMMAP) { - tdb_flags |= TDB_NOMMAP; - } - - if (flags & LDB_FLG_RDONLY) { - open_flags = O_RDONLY; - } else { - open_flags = O_CREAT | O_RDWR; - } - - ltdb = talloc_zero(ldb, struct ltdb_private); - if (!ltdb) { - ldb_oom(ldb); - return -1; - } - - /* note that we use quite a large default hash size */ - ltdb->tdb = ltdb_wrap_open(ltdb, path, 10000, - tdb_flags, open_flags, - ldb->create_perms, ldb); - if (!ltdb->tdb) { - ldb_debug(ldb, LDB_DEBUG_ERROR, - "Unable to open tdb '%s'\n", path); - talloc_free(ltdb); - return -1; - } - - ltdb->sequence_number = 0; - - *module = talloc(ldb, struct ldb_module); - if ((*module) == NULL) { - ldb_oom(ldb); - talloc_free(ltdb); - return -1; - } - talloc_set_name_const(*module, "ldb_tdb backend"); - (*module)->ldb = ldb; - (*module)->prev = (*module)->next = NULL; - (*module)->private_data = ltdb; - (*module)->ops = <db_ops; - - if (ltdb_cache_load(*module) != 0) { - talloc_free(*module); - talloc_free(ltdb); - return -1; - } - - return 0; -} - -const struct ldb_backend_ops ldb_tdb_backend_ops = { - .name = "tdb", - .connect_fn = ltdb_connect -}; diff --git a/ldb/ldb_tdb/ldb_tdb.h b/ldb/ldb_tdb/ldb_tdb.h deleted file mode 100644 index 7b9a76501..000000000 --- a/ldb/ldb_tdb/ldb_tdb.h +++ /dev/null @@ -1,134 +0,0 @@ -#if (_SAMBA_BUILD_ == 3) -#include "tdb/include/tdb.h" -#else -#include "replace.h" -#include "system/wait.h" -#include "tdb.h" -#endif - -/* this private structure is used by the ltdb backend in the - ldb_context */ -struct ltdb_private { - TDB_CONTEXT *tdb; - unsigned int connect_flags; - - /* a double is used for portability and ease of string - handling. It has plenty of digits of precision */ - unsigned long long sequence_number; - - /* the low level tdb seqnum - used to avoid loading BASEINFO when - possible */ - int tdb_seqnum; - - struct ltdb_cache { - struct ldb_message *indexlist; - struct ldb_message *attributes; - - struct { - char *name; - int flags; - } last_attribute; - } *cache; - - int in_transaction; - - bool check_base; - struct ltdb_idxptr *idxptr; -}; - -/* - the async local context - holds also internal search state during a full db search -*/ -struct ltdb_context { - struct ldb_module *module; - struct ldb_request *req; - - bool callback_failed; - - /* search stuff */ - const struct ldb_parse_tree *tree; - struct ldb_dn *base; - enum ldb_scope scope; - const char * const *attrs; - struct timed_event *timeout_event; -}; - -/* special record types */ -#define LTDB_INDEX "@INDEX" -#define LTDB_INDEXLIST "@INDEXLIST" -#define LTDB_IDX "@IDX" -#define LTDB_IDXPTR "@IDXPTR" -#define LTDB_IDXATTR "@IDXATTR" -#define LTDB_IDXONE "@IDXONE" -#define LTDB_BASEINFO "@BASEINFO" -#define LTDB_OPTIONS "@OPTIONS" -#define LTDB_ATTRIBUTES "@ATTRIBUTES" - -/* special attribute types */ -#define LTDB_SEQUENCE_NUMBER "sequenceNumber" -#define LTDB_CHECK_BASE "checkBaseOnSearch" -#define LTDB_MOD_TIMESTAMP "whenChanged" -#define LTDB_OBJECTCLASS "objectClass" - -/* The following definitions come from lib/ldb/ldb_tdb/ldb_cache.c */ - -int ltdb_cache_reload(struct ldb_module *module); -int ltdb_cache_load(struct ldb_module *module); -int ltdb_increase_sequence_number(struct ldb_module *module); -int ltdb_check_at_attributes_values(const struct ldb_val *value); - -/* The following definitions come from lib/ldb/ldb_tdb/ldb_index.c */ - -struct ldb_parse_tree; - -int ltdb_search_indexed(struct ltdb_context *ctx); -int ltdb_index_add(struct ldb_module *module, const struct ldb_message *msg); -int ltdb_index_del(struct ldb_module *module, const struct ldb_message *msg); -int ltdb_index_one(struct ldb_module *module, const struct ldb_message *msg, int add); -int ltdb_reindex(struct ldb_module *module); -int ltdb_index_transaction_start(struct ldb_module *module); -int ltdb_index_transaction_commit(struct ldb_module *module); -int ltdb_index_transaction_cancel(struct ldb_module *module); - -/* The following definitions come from lib/ldb/ldb_tdb/ldb_pack.c */ - -int ltdb_pack_data(struct ldb_module *module, - const struct ldb_message *message, - struct TDB_DATA *data); -void ltdb_unpack_data_free(struct ldb_module *module, - struct ldb_message *message); -int ltdb_unpack_data(struct ldb_module *module, - const struct TDB_DATA *data, - struct ldb_message *message); - -/* The following definitions come from lib/ldb/ldb_tdb/ldb_search.c */ - -int ltdb_has_wildcard(struct ldb_module *module, const char *attr_name, - const struct ldb_val *val); -void ltdb_search_dn1_free(struct ldb_module *module, struct ldb_message *msg); -int ltdb_search_dn1(struct ldb_module *module, struct ldb_dn *dn, struct ldb_message *msg); -int ltdb_add_attr_results(struct ldb_module *module, - TALLOC_CTX *mem_ctx, - struct ldb_message *msg, - const char * const attrs[], - unsigned int *count, - struct ldb_message ***res); -int ltdb_filter_attrs(struct ldb_message *msg, const char * const *attrs); -int ltdb_search(struct ltdb_context *ctx); - -/* The following definitions come from lib/ldb/ldb_tdb/ldb_tdb.c */ -int ltdb_lock_read(struct ldb_module *module); -int ltdb_unlock_read(struct ldb_module *module); -struct TDB_DATA ltdb_key(struct ldb_module *module, struct ldb_dn *dn); -int ltdb_store(struct ldb_module *module, const struct ldb_message *msg, int flgs); -int ltdb_delete_noindex(struct ldb_module *module, struct ldb_dn *dn); -int ltdb_modify_internal(struct ldb_module *module, const struct ldb_message *msg); - -int ltdb_index_del_value(struct ldb_module *module, const char *dn, - struct ldb_message_element *el, int v_idx); - -struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx, - const char *path, int hash_size, int tdb_flags, - int open_flags, mode_t mode, - struct ldb_context *ldb); diff --git a/ldb/ldb_tdb/ldb_tdb_wrap.c b/ldb/ldb_tdb/ldb_tdb_wrap.c deleted file mode 100644 index 4fea43c8c..000000000 --- a/ldb/ldb_tdb/ldb_tdb_wrap.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - ldb database library - - Copyright (C) Andrew Tridgell 2005 - - ** NOTE! The following LGPL license applies to the ldb - ** library. This does NOT imply that all of Samba is released - ** under the LGPL - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 3 of the License, or (at your option) any later version. - - This library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, see <http://www.gnu.org/licenses/>. -*/ - -#include "ldb_includes.h" - -#include "ldb_tdb.h" - -/* - the purpose of this code is to work around the braindead posix locking - rules, to allow us to have a ldb open more than once while allowing - locking to work -*/ - -struct ltdb_wrap { - struct ltdb_wrap *next, *prev; - struct tdb_context *tdb; - dev_t device; - ino_t inode; -}; - -static struct ltdb_wrap *tdb_list; - -/* destroy the last connection to a tdb */ -static int ltdb_wrap_destructor(struct ltdb_wrap *w) -{ - tdb_close(w->tdb); - if (w->next) { - w->next->prev = w->prev; - } - if (w->prev) { - w->prev->next = w->next; - } - if (w == tdb_list) { - tdb_list = w->next; - } - return 0; -} - -static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4); -static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) -{ - va_list ap; - const char *name = tdb_name(tdb); - struct ldb_context *ldb = talloc_get_type(tdb_get_logging_private(tdb), struct ldb_context); - enum ldb_debug_level ldb_level; - char *message; - - if (ldb == NULL) - return; - - va_start(ap, fmt); - message = talloc_vasprintf(ldb, fmt, ap); - va_end(ap); - - switch (level) { - case TDB_DEBUG_FATAL: - ldb_level = LDB_DEBUG_FATAL; - break; - case TDB_DEBUG_ERROR: - ldb_level = LDB_DEBUG_ERROR; - break; - case TDB_DEBUG_WARNING: - ldb_level = LDB_DEBUG_WARNING; - break; - case TDB_DEBUG_TRACE: - ldb_level = LDB_DEBUG_TRACE; - break; - default: - ldb_level = LDB_DEBUG_FATAL; - } - - ldb_debug(ldb, ldb_level, "ltdb: tdb(%s): %s", name, message); - talloc_free(message); -} - -/* - wrapped connection to a tdb database. The caller should _not_ free - this as it is not a talloc structure (as tdb does not use talloc - yet). It will auto-close when the caller frees the mem_ctx that is - passed to this call - */ -struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx, - const char *path, int hash_size, - int tdb_flags, - int open_flags, mode_t mode, - struct ldb_context *ldb) -{ - struct ltdb_wrap *w; - struct stat st; - struct tdb_logging_context log_ctx; - - log_ctx.log_fn = ltdb_log_fn; - log_ctx.log_private = ldb; - - if (stat(path, &st) == 0) { - for (w=tdb_list;w;w=w->next) { - if (st.st_dev == w->device && st.st_ino == w->inode) { - if (!talloc_reference(mem_ctx, w)) { - return NULL; - } - return w->tdb; - } - } - } - - w = talloc(mem_ctx, struct ltdb_wrap); - if (w == NULL) { - return NULL; - } - - w->tdb = tdb_open_ex(path, hash_size, tdb_flags, open_flags, mode, &log_ctx, NULL); - if (w->tdb == NULL) { - talloc_free(w); - return NULL; - } - - if (fstat(tdb_fd(w->tdb), &st) != 0) { - tdb_close(w->tdb); - talloc_free(w); - return NULL; - } - - w->device = st.st_dev; - w->inode = st.st_ino; - - talloc_set_destructor(w, ltdb_wrap_destructor); - - w->next = tdb_list; - w->prev = NULL; - if (tdb_list) { - tdb_list->prev = w; - } - tdb_list = w; - - return w->tdb; -} - |