*
* 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,
* 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 "system/filesys.h"
+#include "smbd/smbd.h"
+#include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "smbd/globals.h"
+#include "auth.h"
+#include "../lib/tsocket/tsocket.h"
+#include "lib/util/xfile.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
-extern userdom_struct current_user_info;
-
/**********************************************************
Under mapfile we expect a table of the following format:
This is to redirect a DFS client to a host close to it.
***********************************************************/
-static BOOL read_target_host(const char *mapfile, pstring targethost)
+static char *read_target_host(TALLOC_CTX *ctx, const char *mapfile,
+ const char *clientaddr)
{
XFILE *f;
- pstring buf;
+ char buf[1024];
char *space = buf;
- BOOL found = False;
-
+ bool found = false;
+
f = x_fopen(mapfile, O_RDONLY, 0);
if (f == NULL) {
DEBUG(0,("can't open IP map %s. Error %s\n",
mapfile, strerror(errno) ));
- return False;
+ return NULL;
}
DEBUG(10, ("Scanning mapfile [%s]\n", mapfile));
*space = '\0';
- if (strncmp(client_addr(), buf, strlen(buf)) == 0) {
- found = True;
+ if (strncmp(clientaddr, buf, strlen(buf)) == 0) {
+ found = true;
break;
}
}
x_fclose(f);
- if (!found)
- return False;
+ if (!found) {
+ return NULL;
+ }
space += 1;
while (isspace(*space))
space += 1;
- pstrcpy(targethost, space);
- return True;
+ return talloc_strdup(ctx, space);
}
/**********************************************************
***********************************************************/
-static BOOL expand_msdfs_target(connection_struct* conn, pstring target)
+static char *expand_msdfs_target(TALLOC_CTX *ctx,
+ connection_struct *conn,
+ char *target)
{
- pstring mapfilename;
+ char *mapfilename = NULL;
char *filename_start = strchr_m(target, '@');
- char *filename_end;
- int filename_len;
- pstring targethost;
- pstring new_target;
+ char *filename_end = NULL;
+ int filename_len = 0;
+ char *targethost = NULL;
+ char *new_target = NULL;
+ char *raddr;
if (filename_start == NULL) {
DEBUG(10, ("No filename start in %s\n", target));
- return False;
+ return NULL;
}
filename_end = strchr_m(filename_start+1, '@');
if (filename_end == NULL) {
DEBUG(10, ("No filename end in %s\n", target));
- return False;
+ return NULL;
}
filename_len = PTR_DIFF(filename_end, filename_start+1);
- pstrcpy(mapfilename, filename_start+1);
+ mapfilename = talloc_strdup(ctx, filename_start+1);
+ if (!mapfilename) {
+ return NULL;
+ }
mapfilename[filename_len] = '\0';
DEBUG(10, ("Expanding from table [%s]\n", mapfilename));
- if (!read_target_host(mapfilename, targethost)) {
+ raddr = tsocket_address_inet_addr_string(conn->sconn->remote_address,
+ ctx);
+ if (raddr == NULL) {
+ return NULL;
+ }
+
+ targethost = read_target_host(
+ ctx, raddr, mapfilename);
+ if (targethost == NULL) {
DEBUG(1, ("Could not expand target host from file %s\n",
mapfilename));
- return False;
+ return NULL;
}
- standard_sub_advanced(lp_servicename(SNUM(conn)), conn->user,
- conn->connectpath, conn->gid,
- get_current_username(),
- current_user_info.domain,
- mapfilename, sizeof(mapfilename));
+ targethost = talloc_sub_advanced(ctx,
+ lp_servicename(talloc_tos(), SNUM(conn)),
+ conn->session_info->unix_info->unix_name,
+ conn->connectpath,
+ conn->session_info->unix_token->gid,
+ conn->session_info->unix_info->sanitized_username,
+ conn->session_info->info->domain_name,
+ targethost);
DEBUG(10, ("Expanded targethost to %s\n", targethost));
+ /* Replace the part between '@...@' */
*filename_start = '\0';
- pstrcpy(new_target, target);
- pstrcat(new_target, targethost);
- pstrcat(new_target, filename_end+1);
+ new_target = talloc_asprintf(ctx,
+ "%s%s%s",
+ target,
+ targethost,
+ filename_end+1);
+ if (!new_target) {
+ return NULL;
+ }
DEBUG(10, ("New DFS target: %s\n", new_target));
- pstrcpy(target, new_target);
- return True;
+ return new_target;
}
static int expand_msdfs_readlink(struct vfs_handle_struct *handle,
const char *path, char *buf, size_t bufsiz)
{
- pstring target;
+ TALLOC_CTX *ctx = talloc_tos();
int result;
+ char *target = talloc_array(ctx, char, PATH_MAX+1);
+ size_t len;
+
+ if (!target) {
+ errno = ENOMEM;
+ return -1;
+ }
+ if (bufsiz == 0) {
+ errno = EINVAL;
+ return -1;
+ }
result = SMB_VFS_NEXT_READLINK(handle, path, target,
- sizeof(target));
+ PATH_MAX);
- if (result < 0)
+ if (result <= 0)
return result;
target[result] = '\0';
- if ((strncmp(target, "msdfs:", strlen("msdfs:")) == 0) &&
+ if ((strncmp(target, "msdfs:", 6) == 0) &&
(strchr_m(target, '@') != NULL)) {
- if (!expand_msdfs_target(handle->conn, target)) {
+ target = expand_msdfs_target(ctx, handle->conn, target);
+ if (!target) {
errno = ENOENT;
return -1;
}
}
- safe_strcpy(buf, target, bufsiz-1);
- return strlen(buf);
-}
+ len = MIN(bufsiz, strlen(target));
+
+ memcpy(buf, target, len);
-/* VFS operations structure */
+ TALLOC_FREE(target);
+ return len;
+}
-static vfs_op_tuple expand_msdfs_ops[] = {
- {SMB_VFS_OP(expand_msdfs_readlink), SMB_VFS_OP_READLINK,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
+static struct vfs_fn_pointers vfs_expand_msdfs_fns = {
+ .readlink_fn = expand_msdfs_readlink
};
NTSTATUS vfs_expand_msdfs_init(void);
NTSTATUS vfs_expand_msdfs_init(void)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "expand_msdfs",
- expand_msdfs_ops);
+ &vfs_expand_msdfs_fns);
}
git.samba.org / samba.git / blobdiff