-/*
+/*
Unix SMB/CIFS implementation.
NetBIOS name cache module on top of gencache mechanism.
-
+
Copyright (C) Tim Potter 2002
Copyright (C) Rafal Szczesniak 2002
-
+ Copyright (C) Jeremy Allison 2007
+
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 2 of the License, or
+ 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#define NBTKEY_FMT "NBT/%s#%02X"
-
/**
* Initialise namecache system. Function calls gencache
* initialisation function to perform necessary actions
- *
+ *
* @return true upon successful initialisation of the cache or
* false on failure
**/
-BOOL namecache_enable(void)
+bool namecache_enable(void)
{
/*
* Check if name caching disabled by setting the name cache
* timeout to zero.
- */
+ */
if (lp_name_cache_timeout() == 0) {
DEBUG(5, ("namecache_enable: disabling netbios name cache\n"));
/* Init namecache by calling gencache initialisation */
if (!gencache_init()) {
- DEBUG(2, ("namecache_enable: Couldn't initialise namecache on top of gencache.\n"));
+ DEBUG(2, ("namecache_enable: "
+ "Couldn't initialise namecache on top of gencache.\n"));
return False;
}
- /* I leave it for now, though I don't think we really need this (mimir, 27.09.2002) */
+ /* I leave it for now, though I don't think we really
+ * need this (mimir, 27.09.2002) */
DEBUG(5, ("namecache_enable: enabling netbios namecache, timeout %d "
"seconds\n", lp_name_cache_timeout()));
return True;
}
-
/**
* Shutdown namecache. Routine calls gencache close function
* to safely close gencache file.
* @return true upon successful shutdown of the cache or
* false on failure
**/
-
-BOOL namecache_shutdown(void)
+
+bool namecache_shutdown(void)
{
if (!gencache_shutdown()) {
- DEBUG(2, ("namecache_shutdown: Couldn't close namecache on top of gencache.\n"));
+ DEBUG(2, ("namecache_shutdown: "
+ "Couldn't close namecache on top of gencache.\n"));
return False;
}
-
- DEBUG(5, ("namecache_shutdown: netbios namecache closed successfully.\n"));
+
+ DEBUG(5, ("namecache_shutdown: "
+ "netbios namecache closed successfully.\n"));
return True;
}
-
/**
* Generates a key for netbios name lookups on basis of
* netbios name and type.
* type number
*/
-static char* namecache_key(const char *name, int name_type)
+static char* namecache_key(const char *name,
+ int name_type)
{
char *keystr;
- asprintf(&keystr, NBTKEY_FMT, strupper_static(name), name_type);
+ asprintf_strupper_m(&keystr, NBTKEY_FMT, name, name_type);
return keystr;
}
-
/**
* Store a name(s) in the name cache
*
* ip addresses being stored
**/
-BOOL namecache_store(const char *name, int name_type,
- int num_names, struct in_addr *ip_list)
+bool namecache_store(const char *name,
+ int name_type,
+ int num_names,
+ struct ip_service *ip_list)
{
time_t expiry;
char *key, *value_string;
int i;
- BOOL ret;
+ bool ret;
/*
* we use gecache call to avoid annoying debug messages about
* initialised namecache again and again...
*/
- if (!gencache_init()) return False;
-
- DEBUG(5, ("namecache_store: storing %d address%s for %s#%02x: ",
- num_names, num_names == 1 ? "": "es", name, name_type));
+ if (!gencache_init()) {
+ return False;
+ }
- for (i = 0; i < num_names; i++)
- DEBUGADD(5, ("%s%s", inet_ntoa(ip_list[i]),
- i == (num_names - 1) ? "" : ", "));
+ if (name_type > 255) {
+ return False; /* Don't store non-real name types. */
+ }
- DEBUGADD(5, ("\n"));
+ if ( DEBUGLEVEL >= 5 ) {
+ TALLOC_CTX *ctx = talloc_stackframe();
+ char *addr = NULL;
+
+ DEBUG(5, ("namecache_store: storing %d address%s for %s#%02x: ",
+ num_names, num_names == 1 ? "": "es", name, name_type));
+
+ for (i = 0; i < num_names; i++) {
+ addr = print_canonical_sockaddr(ctx,
+ &ip_list[i].ss);
+ if (!addr) {
+ continue;
+ }
+ DEBUGADD(5, ("%s%s", addr,
+ (i == (num_names - 1) ? "" : ",")));
+
+ }
+ DEBUGADD(5, ("\n"));
+ TALLOC_FREE(ctx);
+ }
key = namecache_key(name, name_type);
+ if (!key) {
+ return False;
+ }
- /*
- * Cache pdc location or dc lists for only a little while
- * otherwise if we lock on to a bad DC we can potentially be
- * out of action for the entire cache timeout time!
- */
-
- if (name_type == 0x1b || name_type == 0x1c)
- expiry = time(NULL) + 10;
- else
- expiry = time(NULL) + lp_name_cache_timeout();
+ expiry = time(NULL) + lp_name_cache_timeout();
/*
* Generate string representation of ip addresses list
if (!ipstr_list_make(&value_string, ip_list, num_names)) {
SAFE_FREE(key);
SAFE_FREE(value_string);
- return False;
+ return false;
}
-
+
/* set the entry */
ret = gencache_set(key, value_string, expiry);
SAFE_FREE(key);
return ret;
}
-
/**
* Look up a name in the cache.
*
* false if name isn't found in the cache or has expired
**/
-BOOL namecache_fetch(const char *name, int name_type, struct in_addr **ip_list,
- int *num_names)
+bool namecache_fetch(const char *name,
+ int name_type,
+ struct ip_service **ip_list,
+ int *num_names)
{
char *key, *value;
time_t timeout;
- *num_names = 0;
-
/* exit now if null pointers were passed as they're required further */
- if (!ip_list || !num_names) return False;
+ if (!ip_list || !num_names) {
+ return False;
+ }
- if (!gencache_init())
+ if (!gencache_init()) {
return False;
+ }
+
+ if (name_type > 255) {
+ return False; /* Don't fetch non-real name types. */
+ }
- /*
+ *num_names = 0;
+
+ /*
* Use gencache interface - lookup the key
*/
key = namecache_key(name, name_type);
+ if (!key) {
+ return False;
+ }
if (!gencache_get(key, &value, &timeout)) {
DEBUG(5, ("no entry for %s#%02X found.\n", name, name_type));
} else {
DEBUG(5, ("name %s#%02X found.\n", name, name_type));
}
-
+
/*
* Split up the stored value into the list of IP adresses
*/
*num_names = ipstr_list_parse(value, ip_list);
-
+
SAFE_FREE(key);
- SAFE_FREE(value);
- return *num_names > 0; /* true only if some ip has been fetched */
+ SAFE_FREE(value);
+
+ return *num_names > 0; /* true only if some ip has been fetched */
}
+/**
+ * Remove a namecache entry. Needed for site support.
+ *
+ **/
+
+bool namecache_delete(const char *name, int name_type)
+{
+ bool ret;
+ char *key;
+
+ if (!gencache_init())
+ return False;
+
+ if (name_type > 255) {
+ return False; /* Don't fetch non-real name types. */
+ }
+
+ key = namecache_key(name, name_type);
+ if (!key) {
+ return False;
+ }
+ ret = gencache_del(key);
+ SAFE_FREE(key);
+ return ret;
+}
/**
* Delete single namecache entry. Look at the
*
**/
-static void flush_netbios_name(const char* key, const char *value, time_t timeout, void* dptr)
+static void flush_netbios_name(const char *key,
+ const char *value,
+ time_t timeout,
+ void *dptr)
{
gencache_del(key);
DEBUG(5, ("Deleting entry %s\n", key));
}
-
/**
* Flush all names from the name cache.
* It's done by gencache_iterate()
*
- * @return True upon successful deletion or
- * False in case of an error
+ * @return true upon successful deletion or
+ * false in case of an error
**/
void namecache_flush(void)
{
- if (!gencache_init())
+ if (!gencache_init()) {
return;
+ }
- /*
+ /*
* iterate through each NBT cache's entry and flush it
* by flush_netbios_name function
*/
DEBUG(5, ("Namecache flushed\n"));
}
+/* Construct a name status record key. */
+
+static char *namecache_status_record_key(const char *name,
+ int name_type1,
+ int name_type2,
+ const struct sockaddr_storage *keyip)
+{
+ char addr[INET6_ADDRSTRLEN];
+ char *keystr;
+
+ print_sockaddr(addr, sizeof(addr), keyip);
+ asprintf_strupper_m(&keystr, "NBT/%s#%02X.%02X.%s", name,
+ name_type1, name_type2, addr);
+ return keystr;
+}
+
+/* Store a name status record. */
+
+bool namecache_status_store(const char *keyname, int keyname_type,
+ int name_type, const struct sockaddr_storage *keyip,
+ const char *srvname)
+{
+ char *key;
+ time_t expiry;
+ bool ret;
+
+ if (!gencache_init()) {
+ return False;
+ }
+
+ key = namecache_status_record_key(keyname, keyname_type,
+ name_type, keyip);
+ if (!key)
+ return False;
+
+ expiry = time(NULL) + lp_name_cache_timeout();
+ ret = gencache_set(key, srvname, expiry);
+
+ if (ret) {
+ DEBUG(5, ("namecache_status_store: entry %s -> %s\n",
+ key, srvname ));
+ } else {
+ DEBUG(5, ("namecache_status_store: entry %s store failed.\n",
+ key ));
+ }
+
+ SAFE_FREE(key);
+ return ret;
+}
+
+/* Fetch a name status record. */
+
+bool namecache_status_fetch(const char *keyname,
+ int keyname_type,
+ int name_type,
+ const struct sockaddr_storage *keyip,
+ char *srvname_out)
+{
+ char *key = NULL;
+ char *value = NULL;
+ time_t timeout;
+
+ if (!gencache_init())
+ return False;
+
+ key = namecache_status_record_key(keyname, keyname_type,
+ name_type, keyip);
+ if (!key)
+ return False;
+
+ if (!gencache_get(key, &value, &timeout)) {
+ DEBUG(5, ("namecache_status_fetch: no entry for %s found.\n",
+ key));
+ SAFE_FREE(key);
+ return False;
+ } else {
+ DEBUG(5, ("namecache_status_fetch: key %s -> %s\n",
+ key, value ));
+ }
+
+ strlcpy(srvname_out, value, 16);
+ SAFE_FREE(key);
+ SAFE_FREE(value);
+ return True;
+}
git.samba.org / nivanova / samba-autobuild / .git / blobdiff