-/*
+/*
Unix SMB/CIFS implementation.
SMB client library implementation (server cache)
Copyright (C) Andrew Tridgell 1998
Copyright (C) Richard Sharpe 2000
Copyright (C) John Terpstra 2000
- Copyright (C) Tom Jansen (Ninja ISD) 2002
-
+ Copyright (C) Tom Jansen (Ninja ISD) 2002
+
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"
+#include "libsmb/libsmb.h"
+#include "libsmbclient.h"
+#include "libsmb_internal.h"
/*
- * Define this to get the real SMBCFILE and SMBCSRV structures
- */
-#define _SMBC_INTERNAL
-#include "../include/libsmbclient.h"
-
-/*
- * Structure we use if internal caching mechanism is used
+ * Structure we use if internal caching mechanism is used
* nothing fancy here.
*/
struct smbc_server_cache {
char *workgroup;
char *username;
SMBCSRV *server;
-
+
struct smbc_server_cache *next, *prev;
};
-
+
/*
* Add a new connection to the server cache.
- * This function is only used if the external cache is not enabled
+ * This function is only used if the external cache is not enabled
*/
-static int smbc_add_cached_server(SMBCCTX * context, SMBCSRV * new,
- char * server, char * share,
- char * workgroup, char * username)
+int
+SMBC_add_cached_server(SMBCCTX * context,
+ SMBCSRV * newsrv,
+ const char * server,
+ const char * share,
+ const char * workgroup,
+ const char * username)
{
struct smbc_server_cache * srvcache = NULL;
- if (!(srvcache = malloc(sizeof(*srvcache)))) {
+ if (!(srvcache = SMB_MALLOC_P(struct smbc_server_cache))) {
errno = ENOMEM;
DEBUG(3, ("Not enough space for server cache allocation\n"));
return 1;
}
-
+
ZERO_STRUCTP(srvcache);
- srvcache->server = new;
+ srvcache->server = newsrv;
- srvcache->server_name = strdup(server);
+ srvcache->server_name = SMB_STRDUP(server);
if (!srvcache->server_name) {
errno = ENOMEM;
goto failed;
}
- srvcache->share_name = strdup(share);
+ srvcache->share_name = SMB_STRDUP(share);
if (!srvcache->share_name) {
errno = ENOMEM;
goto failed;
}
- srvcache->workgroup = strdup(workgroup);
+ srvcache->workgroup = SMB_STRDUP(workgroup);
if (!srvcache->workgroup) {
errno = ENOMEM;
goto failed;
}
- srvcache->username = strdup(username);
+ srvcache->username = SMB_STRDUP(username);
if (!srvcache->username) {
errno = ENOMEM;
goto failed;
}
- DLIST_ADD((context->server_cache), srvcache);
+ DLIST_ADD(context->internal->server_cache, srvcache);
return 0;
- failed:
+failed:
SAFE_FREE(srvcache->server_name);
SAFE_FREE(srvcache->share_name);
SAFE_FREE(srvcache->workgroup);
SAFE_FREE(srvcache->username);
-
+ SAFE_FREE(srvcache);
+
return 1;
}
/*
- * Search the server cache for a server
- * returns server_fd on success, -1 on error (not found)
- * This function is only used if the external cache is not enabled
+ * Search the server cache for a server
+ * returns server handle on success, NULL on error (not found)
+ * This function is only used if the external cache is not enabled
*/
-static SMBCSRV * smbc_get_cached_server(SMBCCTX * context, char * server,
- char * share, char * workgroup, char * user)
+SMBCSRV *
+SMBC_get_cached_server(SMBCCTX * context,
+ const char * server,
+ const char * share,
+ const char * workgroup,
+ const char * user)
{
struct smbc_server_cache * srv = NULL;
-
+
/* Search the cache lines */
- for (srv=((struct smbc_server_cache *)context->server_cache);srv;srv=srv->next) {
+ for (srv = context->internal->server_cache; srv; srv = srv->next) {
+
if (strcmp(server,srv->server_name) == 0 &&
- strcmp(share,srv->share_name) == 0 &&
strcmp(workgroup,srv->workgroup) == 0 &&
- strcmp(user, srv->username) == 0)
- return srv->server;
+ strcmp(user, srv->username) == 0) {
+
+ /* If the share name matches, we're cool */
+ if (strcmp(share, srv->share_name) == 0) {
+ return srv->server;
+ }
+
+ /*
+ * We only return an empty share name or the attribute
+ * server on an exact match (which would have been
+ * caught above).
+ */
+ if (*share == '\0' || strcmp(share, "*IPC$") == 0)
+ continue;
+
+ /*
+ * Never return an empty share name or the attribute
+ * server if it wasn't what was requested.
+ */
+ if (*srv->share_name == '\0' ||
+ strcmp(srv->share_name, "*IPC$") == 0)
+ continue;
+
+ /*
+ * If we're only allowing one share per server, then
+ * a connection to the server (other than the
+ * attribute server connection) is cool.
+ */
+ if (smbc_getOptionOneSharePerServer(context)) {
+ NTSTATUS status;
+ /*
+ * The currently connected share name
+ * doesn't match the requested share, so
+ * disconnect from the current share.
+ */
+ status = cli_tdis(srv->server->cli);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Sigh. Couldn't disconnect. */
+ cli_shutdown(srv->server->cli);
+ srv->server->cli = NULL;
+ smbc_getFunctionRemoveCachedServer(context)(context, srv->server);
+ continue;
+ }
+
+ /*
+ * Save the new share name. We've
+ * disconnected from the old share, and are
+ * about to connect to the new one.
+ */
+ SAFE_FREE(srv->share_name);
+ srv->share_name = SMB_STRDUP(share);
+ if (!srv->share_name) {
+ /* Out of memory. */
+ cli_shutdown(srv->server->cli);
+ srv->server->cli = NULL;
+ smbc_getFunctionRemoveCachedServer(context)(context, srv->server);
+ continue;
+ }
+
+ return srv->server;
+ }
+ }
}
return NULL;
}
-/*
+/*
* Search the server cache for a server and remove it
* returns 0 on success
- * This function is only used if the external cache is not enabled
+ * This function is only used if the external cache is not enabled
*/
-static int smbc_remove_cached_server(SMBCCTX * context, SMBCSRV * server)
+int
+SMBC_remove_cached_server(SMBCCTX * context,
+ SMBCSRV * server)
{
struct smbc_server_cache * srv = NULL;
-
- for (srv=((struct smbc_server_cache *)context->server_cache);srv;srv=srv->next) {
- if (server == srv->server) {
+
+ for (srv = context->internal->server_cache; srv; srv = srv->next) {
+ if (server == srv->server) {
/* remove this sucker */
- DLIST_REMOVE(context->server_cache, srv);
+ DLIST_REMOVE(context->internal->server_cache, srv);
SAFE_FREE(srv->server_name);
SAFE_FREE(srv->share_name);
SAFE_FREE(srv->workgroup);
* Try to remove all the servers in cache
* returns 1 on failure and 0 if all servers could be removed.
*/
-static int smbc_purge_cached(SMBCCTX * context)
+int
+SMBC_purge_cached_servers(SMBCCTX * context)
{
- struct smbc_server_cache * srv = NULL;
+ struct smbc_server_cache * srv;
+ struct smbc_server_cache * next;
int could_not_purge_all = 0;
- for (srv=((struct smbc_server_cache *) context->server_cache);srv;srv=srv->next) {
- if (smbc_remove_unused_server(context, srv->server)) {
+ for (srv = context->internal->server_cache,
+ next = (srv ? srv->next :NULL);
+ srv;
+ srv = next,
+ next = (srv ? srv->next : NULL)) {
+
+ if (SMBC_remove_unused_server(context, srv->server)) {
/* could not be removed */
could_not_purge_all = 1;
}
}
return could_not_purge_all;
}
-
-
-
-/*
- * This functions initializes all server-cache related functions
- * to the default (internal) system.
- *
- * We use this to make the rest of the cache system static.
- */
-
-int smbc_default_cache_functions(SMBCCTX * context)
-{
- context->callbacks.add_cached_srv_fn = smbc_add_cached_server;
- context->callbacks.get_cached_srv_fn = smbc_get_cached_server;
- context->callbacks.remove_cached_srv_fn = smbc_remove_cached_server;
- context->callbacks.purge_cached_fn = smbc_purge_cached;
-
- return 0;
-}
git.samba.org / vlendec / samba-autobuild / .git / blobdiff