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authorVolker Lendecke <vl@samba.org>2010-03-01 16:18:23 +0100
committerVolker Lendecke <vl@samba.org>2010-03-01 17:53:22 +0100
commitd6a687250625b62242efc8be0aa50ffc448a503a (patch)
tree922043b9c9ac87064436d6bb0925e8f3696b4415 /source3/lib/sessionid_tdb.c
parentc103fbc919d0f5df24fbfefd5153683ab938b779 (diff)
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s3: Abstract access to sessionid.tdb, similar to conn_tdb.c
Diffstat (limited to 'source3/lib/sessionid_tdb.c')
-rw-r--r--source3/lib/sessionid_tdb.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/source3/lib/sessionid_tdb.c b/source3/lib/sessionid_tdb.c
new file mode 100644
index 0000000000..6efbafd46d
--- /dev/null
+++ b/source3/lib/sessionid_tdb.c
@@ -0,0 +1,138 @@
+/*
+ Unix SMB/CIFS implementation.
+ Low-level sessionid.tdb access functions
+ Copyright (C) Volker Lendecke 2010
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+
+static struct db_context *session_db_ctx(void)
+{
+ static struct db_context *session_db_ctx_ptr;
+
+ if (session_db_ctx_ptr != NULL) {
+ return session_db_ctx_ptr;
+ }
+
+ session_db_ctx_ptr = db_open(NULL, lock_path("sessionid.tdb"), 0,
+ TDB_CLEAR_IF_FIRST|TDB_DEFAULT,
+ O_RDWR | O_CREAT, 0644);
+ return session_db_ctx_ptr;
+}
+
+bool sessionid_init(void)
+{
+ if (session_db_ctx() == NULL) {
+ DEBUG(1,("session_init: failed to open sessionid tdb\n"));
+ return False;
+ }
+
+ return True;
+}
+
+struct db_record *sessionid_fetch_record(TALLOC_CTX *mem_ctx, const char *key)
+{
+ struct db_context *db;
+
+ db = session_db_ctx();
+ if (db == NULL) {
+ return NULL;
+ }
+ return db->fetch_locked(db, mem_ctx, string_term_tdb_data(key));
+}
+
+struct sessionid_traverse_state {
+ int (*fn)(struct db_record *rec, const char *key,
+ struct sessionid *session, void *private_data);
+ void *private_data;
+};
+
+static int sessionid_traverse_fn(struct db_record *rec, void *private_data)
+{
+ struct sessionid_traverse_state *state =
+ (struct sessionid_traverse_state *)private_data;
+ struct sessionid session;
+
+ if ((rec->key.dptr[rec->key.dsize-1] != '\0')
+ || (rec->value.dsize != sizeof(struct sessionid))) {
+ DEBUG(1, ("Found invalid record in sessionid.tdb\n"));
+ return 0;
+ }
+
+ memcpy(&session, rec->value.dptr, sizeof(session));
+
+ return state->fn(rec, (char *)rec->key.dptr, &session,
+ state->private_data);
+}
+
+int sessionid_traverse(int (*fn)(struct db_record *rec, const char *key,
+ struct sessionid *session,
+ void *private_data),
+ void *private_data)
+{
+ struct db_context *db;
+ struct sessionid_traverse_state state;
+
+ db = session_db_ctx();
+ if (db == NULL) {
+ return -1;
+ }
+ state.fn = fn;
+ state.private_data = private_data;
+ return db->traverse(db, sessionid_traverse_fn, &state);
+}
+
+struct sessionid_traverse_read_state {
+ int (*fn)(const char *key, struct sessionid *session,
+ void *private_data);
+ void *private_data;
+};
+
+static int sessionid_traverse_read_fn(struct db_record *rec,
+ void *private_data)
+{
+ struct sessionid_traverse_read_state *state =
+ (struct sessionid_traverse_read_state *)private_data;
+ struct sessionid session;
+
+ if ((rec->key.dptr[rec->key.dsize-1] != '\0')
+ || (rec->value.dsize != sizeof(struct sessionid))) {
+ DEBUG(1, ("Found invalid record in sessionid.tdb\n"));
+ return 0;
+ }
+
+ memcpy(&session, rec->value.dptr, sizeof(session));
+
+ return state->fn((char *)rec->key.dptr, &session,
+ state->private_data);
+}
+
+int sessionid_traverse_read(int (*fn)(const char *key,
+ struct sessionid *session,
+ void *private_data),
+ void *private_data)
+{
+ struct db_context *db;
+ struct sessionid_traverse_read_state state;
+
+ db = session_db_ctx();
+ if (db == NULL) {
+ return -1;
+ }
+ state.fn = fn;
+ state.private_data = private_data;
+ return db->traverse(db, sessionid_traverse_read_fn, &state);
+}