s4:winbind Make the 'no SID found' message even more detailed
[abartlet/samba.git/.git] / source4 / param / secrets.c
index c749d38bb23d759efabdd17a7756cd08ccbfee0b..407e27ff670edae95e96b348b2364434505348da 100644 (file)
 #include "param/param.h"
 #include "system/filesys.h"
 #include "tdb_wrap.h"
-#include "ldb_wrap.h"
 #include "lib/ldb/include/ldb.h"
-#include "lib/tdb/include/tdb.h"
-#include "lib/util/util_tdb.h"
-#include "lib/util/util_ldb.h"
+#include "../tdb/include/tdb.h"
+#include "../lib/util/util_tdb.h"
+#include "../lib/util/util_ldb.h"
+#include "librpc/gen_ndr/ndr_security.h"
 #include "dsdb/samdb/samdb.h"
-
-static struct tdb_wrap *tdb;
+#include "dsdb/common/util.h"
+#include "dsdb/common/proto.h"
 
 /**
  * Use a TDB to store an incrementing random seed.
@@ -43,43 +43,31 @@ static struct tdb_wrap *tdb;
  * 
  * @note Not called by systems with a working /dev/urandom.
  */
-static void get_rand_seed(int *new_seed) 
+static void get_rand_seed(struct tdb_wrap *secretsdb, int *new_seed) 
 {
        *new_seed = getpid();
-       if (tdb != NULL) {
-               tdb_change_int32_atomic(tdb->tdb, "INFO/random_seed", new_seed, 1);
+       if (secretsdb != NULL) {
+               tdb_change_int32_atomic(secretsdb->tdb, "INFO/random_seed", new_seed, 1);
        }
 }
 
-/**
- * close the secrets database
- */
-void secrets_shutdown(void)
-{
-       talloc_free(tdb);
-}
-
 /**
  * open up the secrets database
  */
-bool secrets_init(void)
+struct tdb_wrap *secrets_init(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx)
 {
        char *fname;
        uint8_t dummy;
+       struct tdb_wrap *tdb;
 
-       if (tdb != NULL)
-               return true;
-
-       fname = private_path(NULL, global_loadparm,
-                                                "secrets.tdb");
+       fname = private_path(mem_ctx, lp_ctx, "secrets.tdb");
 
-       tdb = tdb_wrap_open(talloc_autofree_context(), fname, 0, TDB_DEFAULT, 
-                                               O_RDWR|O_CREAT, 0600);
+       tdb = tdb_wrap_open(mem_ctx, fname, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
 
        if (!tdb) {
                DEBUG(0,("Failed to open %s\n", fname));
                talloc_free(fname);
-               return false;
+               return NULL;
        }
        talloc_free(fname);
 
@@ -89,40 +77,59 @@ bool secrets_init(void)
         * This avoids a problem where systems without /dev/urandom
         * could send the same challenge to multiple clients
         */
-       set_rand_reseed_callback(get_rand_seed);
+       set_rand_reseed_callback((void (*) (void *, int *))get_rand_seed, tdb);
 
        /* Ensure that the reseed is done now, while we are root, etc */
        generate_random_buffer(&dummy, sizeof(dummy));
 
-       return true;
+       return tdb;
 }
 
 /**
   connect to the secrets ldb
 */
-struct ldb_context *secrets_db_connect(TALLOC_CTX *mem_ctx)
+struct ldb_context *secrets_db_connect(TALLOC_CTX *mem_ctx,
+                                       struct tevent_context *ev_ctx,
+                                       struct loadparm_context *lp_ctx)
 {
        char *path;
        const char *url;
        struct ldb_context *ldb;
 
-       url = lp_secrets_url(global_loadparm);
+       url = lp_secrets_url(lp_ctx);
        if (!url || !url[0]) {
                return NULL;
        }
 
-       path = private_path(mem_ctx, global_loadparm, url);
+       path = private_path(mem_ctx, lp_ctx, url);
        if (!path) {
                return NULL;
        }
 
        /* Secrets.ldb *must* always be local.  If we call for a
         * system_session() we will recurse */
-       ldb = ldb_wrap_connect(mem_ctx, global_loadparm, path, NULL, NULL, 0, NULL);
-       talloc_free(path);
+       ldb = ldb_init(mem_ctx, ev_ctx);
        if (!ldb) {
+               talloc_free(path);
+               return NULL;
+       }
+
+       ldb_set_modules_dir(ldb, 
+                           talloc_asprintf(ldb, "%s/ldb", lp_modulesdir(lp_ctx)));
+
+       if (ldb_connect(ldb, path, 0, NULL) != 0) {
+               talloc_free(path);
                return NULL;
        }
+
+       /* the update_keytab module relies on this being setup */
+       if (ldb_set_opaque(ldb, "loadparm", lp_ctx) != LDB_SUCCESS) {
+               talloc_free(path);
+               talloc_free(ldb);
+               return NULL;
+       }
+
+       talloc_free(path);
        
        return ldb;
 }
@@ -132,49 +139,55 @@ struct ldb_context *secrets_db_connect(TALLOC_CTX *mem_ctx)
  * @return pointer to a SID object if the SID could be obtained, NULL otherwise
  */
 struct dom_sid *secrets_get_domain_sid(TALLOC_CTX *mem_ctx,
-                                      const char *domain)
+                                      struct tevent_context *ev_ctx,
+                                      struct loadparm_context *lp_ctx,
+                                      const char *domain,
+                                      char **errstring)
 {
        struct ldb_context *ldb;
-       struct ldb_message **msgs;
+       struct ldb_message *msg;
        int ldb_ret;
        const char *attrs[] = { "objectSid", NULL };
        struct dom_sid *result = NULL;
+       const struct ldb_val *v;
+       enum ndr_err_code ndr_err;
+       *errstring = NULL;
 
-       ldb = secrets_db_connect(mem_ctx);
+       ldb = secrets_db_connect(mem_ctx, ev_ctx, lp_ctx);
        if (ldb == NULL) {
                DEBUG(5, ("secrets_db_connect failed\n"));
                return NULL;
        }
 
-       ldb_ret = gendb_search(ldb, ldb,
-                              ldb_dn_new(mem_ctx, ldb, SECRETS_PRIMARY_DOMAIN_DN), 
-                              &msgs, attrs,
-                              SECRETS_PRIMARY_DOMAIN_FILTER, domain);
+       ldb_ret = dsdb_search_one(ldb, ldb, &msg,
+                             ldb_dn_new(mem_ctx, ldb, SECRETS_PRIMARY_DOMAIN_DN),
+                             LDB_SCOPE_ONELEVEL,
+                             attrs, 0, SECRETS_PRIMARY_DOMAIN_FILTER, domain);
 
-       if (ldb_ret == -1) {
-               DEBUG(5, ("Error searching for domain SID for %s: %s", 
-                         domain, ldb_errstring(ldb))); 
-               talloc_free(ldb);
+       if (ldb_ret != LDB_SUCCESS) {
+               *errstring = talloc_asprintf(mem_ctx, "Failed to find record for %s in %s: %s: %s", 
+                                            domain, ldb_get_opaque(ldb, "ldb_url"), 
+                                            ldb_strerror(ldb_ret), ldb_errstring(ldb));
                return NULL;
        }
-
-       if (ldb_ret == 0) {
-               DEBUG(5, ("Did not find domain record for %s\n", domain));
-               talloc_free(ldb);
+       v = ldb_msg_find_ldb_val(msg, "objectSid");
+       if (v == NULL) {
+               *errstring = talloc_asprintf(mem_ctx, "Failed to find a SID on record for %s in %s", 
+                                            domain, ldb_get_opaque(ldb, "ldb_url"));
                return NULL;
        }
-
-       if (ldb_ret > 1) {
-               DEBUG(5, ("Found more than one (%d) domain records for %s\n",
-                         ldb_ret, domain));
+       result = talloc(mem_ctx, struct dom_sid);
+       if (result == NULL) {
                talloc_free(ldb);
                return NULL;
        }
 
-       result = samdb_result_dom_sid(mem_ctx, msgs[0], "objectSid");
-       if (result == NULL) {
-               DEBUG(0, ("Domain object for %s does not contain a SID!\n",
-                         domain));
+       ndr_err = ndr_pull_struct_blob(v, result, NULL, result,
+                                      (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
+       if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+               *errstring = talloc_asprintf(mem_ctx, "Failed to parse SID on record for %s in %s", 
+                                            domain, ldb_get_opaque(ldb, "ldb_url"));
+               talloc_free(result);
                talloc_free(ldb);
                return NULL;
        }