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add gendb_search_single_extended_dn()

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This function searches for a single record using a given filter,
adding the extended-dn control so that any returned DNs will have the
GUID and SID fields returned. This will be used in the sam auth code
to prevent us doing a member= search for the groups, which invokes an
unindexed search.
This commit is contained in:
Andrew Tridgell 2009-06-02 17:27:37 +10:00
parent da3ee27900
commit 8ca8dabe46
2 changed files with 103 additions and 0 deletions
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95
lib/util/util_ldb.c
View File

@ -130,3 +130,98 @@ char *wrap_casefold(void *context, void *mem_ctx, const char *s, size_t n)
}
/*
search the LDB for a single record, with the extended_dn control
return LDB_SUCCESS on success, or an ldb error code on error
if the search returns 0 entries, return LDB_ERR_NO_SUCH_OBJECT
if the search returns more than 1 entry, return LDB_ERR_CONSTRAINT_VIOLATION
*/
int gendb_search_single_extended_dn(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
enum ldb_scope scope,
struct ldb_message **msg,
const char * const *attrs,
const char *format, ...)
{
va_list ap;
int ret;
struct ldb_request *req;
char *filter;
TALLOC_CTX *tmp_ctx;
struct ldb_result *res;
struct ldb_extended_dn_control *ctrl;
tmp_ctx = talloc_new(mem_ctx);
res = talloc_zero(tmp_ctx, struct ldb_result);
if (!res) {
return LDB_ERR_OPERATIONS_ERROR;
}
va_start(ap, format);
filter = talloc_vasprintf(tmp_ctx, format, ap);
va_end(ap);
if (filter == NULL) {
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_build_search_req(&req, ldb, tmp_ctx,
basedn,
scope,
filter,
attrs,
NULL,
res,
ldb_search_default_callback,
NULL);
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
ctrl = talloc(tmp_ctx, struct ldb_extended_dn_control);
if (ctrl == NULL) {
talloc_free(tmp_ctx);
return LDB_ERR_OPERATIONS_ERROR;
}
ctrl->type = 1;
ret = ldb_request_add_control(req, LDB_CONTROL_EXTENDED_DN_OID, true, ctrl);
if (ret != LDB_SUCCESS) {
return ret;
}
ret = ldb_request(ldb, req);
if (ret == LDB_SUCCESS) {
ret = ldb_wait(req->handle, LDB_WAIT_ALL);
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ret;
}
if (res->count == 0) {
talloc_free(tmp_ctx);
return LDB_ERR_NO_SUCH_OBJECT;
}
if (res->count > 1) {
/* the function is only supposed to return a single
entry */
talloc_free(tmp_ctx);
return LDB_ERR_CONSTRAINT_VIOLATION;
}
*msg = talloc_steal(mem_ctx, res->msgs[0]);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}

8
lib/util/util_ldb.h
View File

@ -26,4 +26,12 @@ int gendb_search_dn(struct ldb_context *ldb,
int gendb_add_ldif(struct ldb_context *ldb, const char *ldif_string);
char *wrap_casefold(void *context, void *mem_ctx, const char *s, size_t n);
int gendb_search_single_extended_dn(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
struct ldb_dn *basedn,
enum ldb_scope scope,
struct ldb_message **msg,
const char * const *attrs,
const char *format, ...) PRINTF_ATTRIBUTE(7,8);
#endif /* __LIB_UTIL_UTIL_LDB_H__ */