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added dsdb_find_dn_by_guid()

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This came from the linked_attributes module, but now the
repl_meta_data module needs the same functionality, so move it to a
common routine.
This commit is contained in:
Andrew Tridgell 2009-09-03 12:51:22 +10:00
parent 642a84c129
commit 5d23ad8c2d
1 changed files with 78 additions and 0 deletions
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78
source4/dsdb/common/util.c
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@ -2042,3 +2042,81 @@ struct ldb_dn *samdb_domain_to_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
return samdb_result_dn(ldb, mem_ctx, res_domain_ref->msgs[0], "nCName", NULL);
}
/*
use a GUID to find a DN
*/
int dsdb_find_dn_by_guid(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
const char *guid_str, struct ldb_dn **dn)
{
int ret;
struct ldb_result *res;
const char *attrs[] = { NULL };
struct ldb_request *search_req;
char *expression;
struct ldb_search_options_control *options;
expression = talloc_asprintf(mem_ctx, "objectGUID=%s", guid_str);
if (!expression) {
DEBUG(0, (__location__ ": out of memory\n"));
return LDB_ERR_OPERATIONS_ERROR;
}
res = talloc_zero(mem_ctx, struct ldb_result);
if (!res) {
DEBUG(0, (__location__ ": out of memory\n"));
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_build_search_req(&search_req, ldb, mem_ctx,
ldb_get_default_basedn(ldb),
LDB_SCOPE_SUBTREE,
expression, attrs,
NULL,
res, ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
return ret;
}
/* we need to cope with cross-partition links, so search for
the GUID over all partitions */
options = talloc(search_req, struct ldb_search_options_control);
if (options == NULL) {
DEBUG(0, (__location__ ": out of memory\n"));
return LDB_ERR_OPERATIONS_ERROR;
}
options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
ret = ldb_request_add_control(search_req,
LDB_CONTROL_SEARCH_OPTIONS_OID,
true, options);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_request(ldb, search_req);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_wait(search_req->handle, LDB_WAIT_ALL);
if (ret != LDB_SUCCESS) {
return ret;
}
/* this really should be exactly 1, but there is a bug in the
partitions module that can return two here with the
search_options control set */
if (res->count < 1) {
return LDB_ERR_OPERATIONS_ERROR;
}
*dn = res->msgs[0]->dn;
return LDB_SUCCESS;
}