-/*
+/*
Unix SMB/Netbios implementation.
Version 3.0
MSDFS services for Samba
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/>.
*/
#define DBGC_CLASS DBGC_MSDFS
#include "includes.h"
-
-extern uint32 global_client_caps;
+#include "system/filesys.h"
+#include "smbd/smbd.h"
+#include "smbd/globals.h"
+#include "msdfs.h"
+#include "auth.h"
/**********************************************************************
Parse a DFS pathname of the form \hostname\service\reqpath
SVAL(inbuf,smb_flg2) & FLAGS2_DFS_PATHNAMES bit and then
send a local path, we have to cope with that too....
+ If conn != NULL then ensure the provided service is
+ the one pointed to by the connection.
+
+ This version does everything using pointers within one copy of the
+ pathname string, talloced on the struct dfs_path pointer (which
+ must be talloced). This may be too clever to live....
JRA.
**********************************************************************/
-static NTSTATUS parse_dfs_path(const char *pathname,
- BOOL allow_wcards,
- struct dfs_path *pdp,
- BOOL *ppath_contains_wcard)
+static NTSTATUS parse_dfs_path(connection_struct *conn,
+ const char *pathname,
+ bool allow_wcards,
+ struct dfs_path *pdp, /* MUST BE TALLOCED */
+ bool *ppath_contains_wcard)
{
- pstring pathname_local;
+ struct smbd_server_connection *sconn = smbd_server_conn;
+ char *pathname_local;
char *p,*temp;
+ char *servicename;
+ char *eos_ptr;
NTSTATUS status = NT_STATUS_OK;
char sepchar;
ZERO_STRUCTP(pdp);
- pstrcpy(pathname_local,pathname);
+ /*
+ * This is the only talloc we should need to do
+ * on the struct dfs_path. All the pointers inside
+ * it should point to offsets within this string.
+ */
+
+ pathname_local = talloc_strdup(pdp, pathname);
+ if (!pathname_local) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ /* Get a pointer to the terminating '\0' */
+ eos_ptr = &pathname_local[strlen(pathname_local)];
p = temp = pathname_local;
pdp->posix_path = (lp_posix_pathnames() && *pathname == '/');
sepchar = pdp->posix_path ? '/' : '\\';
- if (*pathname != sepchar) {
+ if (!sconn->using_smb2 && (*pathname != sepchar)) {
DEBUG(10,("parse_dfs_path: path %s doesn't start with %c\n",
pathname, sepchar ));
/*
* Try and convert to a local path.
*/
- pdp->hostname[0] = '\0';
- pdp->servicename[0] = '\0';
+ pdp->hostname = eos_ptr; /* "" */
+ pdp->servicename = eos_ptr; /* "" */
/* We've got no info about separators. */
pdp->posix_path = lp_posix_pathnames();
p = temp;
- DEBUG(10,("parse_dfs_path: trying to convert %s to a local path\n",
+ DEBUG(10,("parse_dfs_path: trying to convert %s to a "
+ "local path\n",
temp));
goto local_path;
}
+ /*
+ * Safe to use on talloc'ed string as it only shrinks.
+ * It also doesn't affect the eos_ptr.
+ */
trim_char(temp,sepchar,sepchar);
DEBUG(10,("parse_dfs_path: temp = |%s| after trimming %c's\n",
* Try and convert to a local path.
*/
- pdp->hostname[0] = '\0';
- pdp->servicename[0] = '\0';
+ pdp->hostname = eos_ptr; /* "" */
+ pdp->servicename = eos_ptr; /* "" */
p = temp;
- DEBUG(10,("parse_dfs_path: trying to convert %s to a local path\n",
+ DEBUG(10,("parse_dfs_path: trying to convert %s "
+ "to a local path\n",
temp));
goto local_path;
}
*p = '\0';
- fstrcpy(pdp->hostname,temp);
+ pdp->hostname = temp;
+
DEBUG(10,("parse_dfs_path: hostname: %s\n",pdp->hostname));
- /* If we got a hostname, is it ours (or an IP address) ? */
- if (!is_myname_or_ipaddr(pdp->hostname)) {
- /* Repair path. */
- *p = sepchar;
- DEBUG(10,("parse_dfs_path: hostname %s isn't ours. Try local path from path %s\n",
- pdp->hostname, temp));
+ /* Parse out servicename. */
+ servicename = p+1;
+ p = strchr_m(servicename,sepchar);
+ if (p) {
+ *p = '\0';
+ }
+
+ /* Is this really our servicename ? */
+ if (conn && !( strequal(servicename, lp_servicename(SNUM(conn)))
+ || (strequal(servicename, HOMES_NAME)
+ && strequal(lp_servicename(SNUM(conn)),
+ get_current_username()) )) ) {
+ DEBUG(10,("parse_dfs_path: %s is not our servicename\n",
+ servicename));
+
/*
* Possibly client sent a local path by mistake.
* Try and convert to a local path.
*/
- pdp->hostname[0] = '\0';
- pdp->servicename[0] = '\0';
+ pdp->hostname = eos_ptr; /* "" */
+ pdp->servicename = eos_ptr; /* "" */
+
+ /* Repair the path - replace the sepchar's
+ we nulled out */
+ servicename--;
+ *servicename = sepchar;
+ if (p) {
+ *p = sepchar;
+ }
p = temp;
- DEBUG(10,("parse_dfs_path: trying to convert %s to a local path\n",
+ DEBUG(10,("parse_dfs_path: trying to convert %s "
+ "to a local path\n",
temp));
goto local_path;
}
- /* Parse out servicename. */
- temp = p+1;
- p = strchr_m(temp,sepchar);
+ pdp->servicename = servicename;
+
+ DEBUG(10,("parse_dfs_path: servicename: %s\n",pdp->servicename));
+
if(p == NULL) {
- fstrcpy(pdp->servicename,temp);
- pdp->reqpath[0] = '\0';
+ /* Client sent self referral \server\share. */
+ pdp->reqpath = eos_ptr; /* "" */
return NT_STATUS_OK;
}
- *p = '\0';
- fstrcpy(pdp->servicename,temp);
- DEBUG(10,("parse_dfs_path: servicename: %s\n",pdp->servicename));
p++;
*ppath_contains_wcard = False;
+ pdp->reqpath = p;
+
/* Rest is reqpath. */
if (pdp->posix_path) {
- status = check_path_syntax_posix(pdp->reqpath, p);
+ status = check_path_syntax_posix(pdp->reqpath);
} else {
if (allow_wcards) {
- status = check_path_syntax_wcard(pdp->reqpath, p, ppath_contains_wcard);
+ status = check_path_syntax_wcard(pdp->reqpath,
+ ppath_contains_wcard);
} else {
- status = check_path_syntax(pdp->reqpath, p);
+ status = check_path_syntax(pdp->reqpath);
}
}
/********************************************************
Fake up a connection struct for the VFS layer.
- Note this CHANGES CWD !!!! JRA.
+ Note: this performs a vfs connect and CHANGES CWD !!!! JRA.
*********************************************************/
-static BOOL create_conn_struct(connection_struct *conn, int snum, const char *path)
+NTSTATUS create_conn_struct(TALLOC_CTX *ctx,
+ connection_struct **pconn,
+ int snum,
+ const char *path,
+ const struct auth_serversupplied_info *session_info,
+ char **poldcwd)
{
- pstring connpath;
+ connection_struct *conn;
+ char *connpath;
+ char *oldcwd;
+ const char *vfs_user;
- ZERO_STRUCTP(conn);
+ conn = TALLOC_ZERO_P(ctx, connection_struct);
+ if (conn == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
- pstrcpy(connpath, path);
- pstring_sub(connpath , "%S", lp_servicename(snum));
+ connpath = talloc_strdup(conn, path);
+ if (!connpath) {
+ TALLOC_FREE(conn);
+ return NT_STATUS_NO_MEMORY;
+ }
+ connpath = talloc_string_sub(conn,
+ connpath,
+ "%S",
+ lp_servicename(snum));
+ if (!connpath) {
+ TALLOC_FREE(conn);
+ return NT_STATUS_NO_MEMORY;
+ }
/* needed for smbd_vfs_init() */
- if ((conn->mem_ctx=talloc_init("connection_struct")) == NULL) {
- DEBUG(0,("talloc_init(connection_struct) failed!\n"));
- return False;
- }
-
- if (!(conn->params = TALLOC_ZERO_P(conn->mem_ctx, struct share_params))) {
+ if (!(conn->params = TALLOC_ZERO_P(conn, struct share_params))) {
DEBUG(0, ("TALLOC failed\n"));
- return False;
+ TALLOC_FREE(conn);
+ return NT_STATUS_NO_MEMORY;
}
conn->params->service = snum;
+ conn->sconn = smbd_server_conn;
+ conn->sconn->num_tcons_open++;
+
+ if (session_info != NULL) {
+ conn->session_info = copy_serverinfo(conn, session_info);
+ if (conn->session_info == NULL) {
+ DEBUG(0, ("copy_serverinfo failed\n"));
+ TALLOC_FREE(conn);
+ return NT_STATUS_NO_MEMORY;
+ }
+ vfs_user = conn->session_info->unix_name;
+ } else {
+ /* use current authenticated user in absence of session_info */
+ vfs_user = get_current_username();
+ }
+
set_conn_connectpath(conn, connpath);
if (!smbd_vfs_init(conn)) {
+ NTSTATUS status = map_nt_error_from_unix(errno);
DEBUG(0,("create_conn_struct: smbd_vfs_init failed.\n"));
- conn_free_internal(conn);
- return False;
+ conn_free(conn);
+ return status;
+ }
+
+ /* this must be the first filesystem operation that we do */
+ if (SMB_VFS_CONNECT(conn, lp_servicename(snum), vfs_user) < 0) {
+ DEBUG(0,("VFS connect failed!\n"));
+ conn_free(conn);
+ return NT_STATUS_UNSUCCESSFUL;
}
+ conn->fs_capabilities = SMB_VFS_FS_CAPABILITIES(conn, &conn->ts_res);
+
/*
- * Windows seems to insist on doing trans2getdfsreferral() calls on the IPC$
- * share as the anonymous user. If we try to chdir as that user we will
- * fail.... WTF ? JRA.
+ * Windows seems to insist on doing trans2getdfsreferral() calls on
+ * the IPC$ share as the anonymous user. If we try to chdir as that
+ * user we will fail.... WTF ? JRA.
*/
+ oldcwd = vfs_GetWd(ctx, conn);
+ if (oldcwd == NULL) {
+ NTSTATUS status = map_nt_error_from_unix(errno);
+ DEBUG(3, ("vfs_GetWd failed: %s\n", strerror(errno)));
+ conn_free(conn);
+ return status;
+ }
+
if (vfs_ChDir(conn,conn->connectpath) != 0) {
- DEBUG(3,("create_conn_struct: Can't ChDir to new conn path %s. Error was %s\n",
- conn->connectpath, strerror(errno) ));
- conn_free_internal(conn);
- return False;
+ NTSTATUS status = map_nt_error_from_unix(errno);
+ DEBUG(3,("create_conn_struct: Can't ChDir to new conn path %s. "
+ "Error was %s\n",
+ conn->connectpath, strerror(errno) ));
+ conn_free(conn);
+ return status;
}
- return True;
+ *pconn = conn;
+ *poldcwd = oldcwd;
+
+ return NT_STATUS_OK;
}
/**********************************************************************
server we're referring to understands posix paths.
**********************************************************************/
-static BOOL parse_msdfs_symlink(TALLOC_CTX *ctx,
- char *target,
+static bool parse_msdfs_symlink(TALLOC_CTX *ctx,
+ const char *target,
struct referral **preflist,
int *refcount)
{
- pstring temp;
- char *alt_path[MAX_REFERRAL_COUNT];
+ char *temp = NULL;
+ char *prot;
+ char **alt_path = NULL;
int count = 0, i;
struct referral *reflist;
+ char *saveptr;
- pstrcpy(temp,target);
+ temp = talloc_strdup(ctx, target);
+ if (!temp) {
+ return False;
+ }
+ prot = strtok_r(temp, ":", &saveptr);
+ if (!prot) {
+ DEBUG(0,("parse_msdfs_symlink: invalid path !\n"));
+ return False;
+ }
+
+ alt_path = talloc_array(ctx, char *, MAX_REFERRAL_COUNT);
+ if (!alt_path) {
+ return False;
+ }
/* parse out the alternate paths */
while((count<MAX_REFERRAL_COUNT) &&
- ((alt_path[count] = strtok(NULL,",")) != NULL)) {
+ ((alt_path[count] = strtok_r(NULL, ",", &saveptr)) != NULL)) {
count++;
}
DEBUG(10,("parse_msdfs_symlink: count=%d\n", count));
- reflist = *preflist = TALLOC_ZERO_ARRAY(ctx, struct referral, count);
- if(reflist == NULL) {
- DEBUG(0,("parse_msdfs_symlink: talloc failed!\n"));
- return False;
+ if (count) {
+ reflist = *preflist = TALLOC_ZERO_ARRAY(ctx,
+ struct referral, count);
+ if(reflist == NULL) {
+ TALLOC_FREE(alt_path);
+ return False;
+ }
+ } else {
+ reflist = *preflist = NULL;
}
-
+
for(i=0;i<count;i++) {
char *p;
- /* Canonicalize link target. Replace all /'s in the path by a \ */
+ /* Canonicalize link target.
+ * Replace all /'s in the path by a \ */
string_replace(alt_path[i], '/', '\\');
/* Remove leading '\\'s */
p++;
}
- pstrcpy(reflist[i].alternate_path, "\\");
- pstrcat(reflist[i].alternate_path, p);
+ reflist[i].alternate_path = talloc_asprintf(ctx,
+ "\\%s",
+ p);
+ if (!reflist[i].alternate_path) {
+ return False;
+ }
reflist[i].proximity = 0;
reflist[i].ttl = REFERRAL_TTL;
- DEBUG(10, ("parse_msdfs_symlink: Created alt path: %s\n", reflist[i].alternate_path));
- *refcount += 1;
+ DEBUG(10, ("parse_msdfs_symlink: Created alt path: %s\n",
+ reflist[i].alternate_path));
}
+ *refcount = count;
+
+ TALLOC_FREE(alt_path);
return True;
}
-
+
/**********************************************************************
Returns true if the unix path is a valid msdfs symlink and also
returns the target string from inside the link.
**********************************************************************/
-BOOL is_msdfs_link(connection_struct *conn,
+static bool is_msdfs_link_internal(TALLOC_CTX *ctx,
+ connection_struct *conn,
const char *path,
- pstring link_target,
+ char **pp_link_target,
SMB_STRUCT_STAT *sbufp)
{
- SMB_STRUCT_STAT st;
int referral_len = 0;
-
- if (sbufp == NULL) {
- sbufp = &st;
+#if defined(HAVE_BROKEN_READLINK)
+ char link_target_buf[PATH_MAX];
+#else
+ char link_target_buf[7];
+#endif
+ size_t bufsize = 0;
+ char *link_target = NULL;
+ struct smb_filename smb_fname;
+
+ if (pp_link_target) {
+ bufsize = 1024;
+ link_target = talloc_array(ctx, char, bufsize);
+ if (!link_target) {
+ return False;
+ }
+ *pp_link_target = link_target;
+ } else {
+ bufsize = sizeof(link_target_buf);
+ link_target = link_target_buf;
}
- if (SMB_VFS_LSTAT(conn, path, sbufp) != 0) {
- DEBUG(5,("is_msdfs_link: %s does not exist.\n",path));
- return False;
+ ZERO_STRUCT(smb_fname);
+ smb_fname.base_name = discard_const_p(char, path);
+
+ if (SMB_VFS_LSTAT(conn, &smb_fname) != 0) {
+ DEBUG(5,("is_msdfs_link_read_target: %s does not exist.\n",
+ path));
+ goto err;
}
-
- if (!S_ISLNK(sbufp->st_mode)) {
- DEBUG(5,("is_msdfs_link: %s is not a link.\n",path));
- return False;
+ if (!S_ISLNK(smb_fname.st.st_ex_mode)) {
+ DEBUG(5,("is_msdfs_link_read_target: %s is not a link.\n",
+ path));
+ goto err;
+ }
+ if (sbufp != NULL) {
+ *sbufp = smb_fname.st;
}
- /* open the link and read it */
- referral_len = SMB_VFS_READLINK(conn, path, link_target, sizeof(pstring)-1);
+ referral_len = SMB_VFS_READLINK(conn, path, link_target, bufsize - 1);
if (referral_len == -1) {
- DEBUG(0,("is_msdfs_link: Error reading msdfs link %s: %s\n",
+ DEBUG(0,("is_msdfs_link_read_target: Error reading "
+ "msdfs link %s: %s\n",
path, strerror(errno)));
- return False;
+ goto err;
}
link_target[referral_len] = '\0';
- DEBUG(5,("is_msdfs_link: %s -> %s\n",path, link_target));
+ DEBUG(5,("is_msdfs_link_internal: %s -> %s\n",path,
+ link_target));
if (!strnequal(link_target, "msdfs:", 6)) {
- return False;
+ goto err;
}
return True;
+
+ err:
+
+ if (link_target != link_target_buf) {
+ TALLOC_FREE(link_target);
+ }
+ return False;
+}
+
+/**********************************************************************
+ Returns true if the unix path is a valid msdfs symlink.
+**********************************************************************/
+
+bool is_msdfs_link(connection_struct *conn,
+ const char *path,
+ SMB_STRUCT_STAT *sbufp)
+{
+ return is_msdfs_link_internal(talloc_tos(),
+ conn,
+ path,
+ NULL,
+ sbufp);
}
/*****************************************************************
Used by other functions to decide if a dfs path is remote,
and to get the list of referred locations for that remote path.
-
+
search_flag: For findfirsts, dfs links themselves are not
redirected, but paths beyond the links are. For normal smb calls,
even dfs links need to be redirected.
link redirect are in targetpath.
*****************************************************************/
-static NTSTATUS dfs_path_lookup(connection_struct *conn,
- const char *dfspath, /* Incoming complete dfs path */
- const struct dfs_path *pdp, /* Parsed out server+share+extrapath. */
- BOOL search_flag, /* Called from a findfirst ? */
- int *consumedcntp,
- pstring targetpath)
+static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
+ connection_struct *conn,
+ const char *dfspath, /* Incoming complete dfs path */
+ const struct dfs_path *pdp, /* Parsed out
+ server+share+extrapath. */
+ bool search_flag, /* Called from a findfirst ? */
+ int *consumedcntp,
+ char **pp_targetpath)
{
char *p = NULL;
char *q = NULL;
- SMB_STRUCT_STAT sbuf;
NTSTATUS status;
- pstring localpath;
- pstring canon_dfspath; /* Canonicalized dfs path. (only '/' components). */
+ struct smb_filename *smb_fname = NULL;
+ char *canon_dfspath = NULL; /* Canonicalized dfs path. (only '/'
+ components). */
DEBUG(10,("dfs_path_lookup: Conn path = %s reqpath = %s\n",
conn->connectpath, pdp->reqpath));
- /*
+ /*
* Note the unix path conversion here we're doing we can
* throw away. We're looking for a symlink for a dfs
* resolution, if we don't find it we'll do another
* unix_convert later in the codepath.
* If we needed to remember what we'd resolved in
* dp->reqpath (as the original code did) we'd
- * pstrcpy(localhost, dp->reqpath) on any code
+ * copy (localhost, dp->reqpath) on any code
* path below that returns True - but I don't
* think this is needed. JRA.
*/
- pstrcpy(localpath, pdp->reqpath);
- status = unix_convert(conn, localpath, search_flag, NULL, &sbuf);
+ status = unix_convert(ctx, conn, pdp->reqpath, &smb_fname,
+ search_flag ? UCF_ALWAYS_ALLOW_WCARD_LCOMP : 0);
+
if (!NT_STATUS_IS_OK(status)) {
- return status;
+ if (!NT_STATUS_EQUAL(status,
+ NT_STATUS_OBJECT_PATH_NOT_FOUND)) {
+ return status;
+ }
+
+ /* Create an smb_fname to use below. */
+ status = create_synthetic_smb_fname(ctx, pdp->reqpath, NULL,
+ NULL, &smb_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
}
/* Optimization - check if we can redirect the whole path. */
- if (is_msdfs_link(conn, localpath, targetpath, NULL)) {
+ if (is_msdfs_link_internal(ctx, conn, smb_fname->base_name,
+ pp_targetpath, NULL)) {
if (search_flag) {
DEBUG(6,("dfs_path_lookup (FindFirst) No redirection "
"for dfs link %s.\n", dfspath));
- return NT_STATUS_OK;
+ status = NT_STATUS_OK;
+ goto out;
}
DEBUG(6,("dfs_path_lookup: %s resolves to a "
- "valid dfs link %s.\n", dfspath, targetpath));
+ "valid dfs link %s.\n", dfspath,
+ pp_targetpath ? *pp_targetpath : ""));
if (consumedcntp) {
*consumedcntp = strlen(dfspath);
}
- return NT_STATUS_PATH_NOT_COVERED;
+ status = NT_STATUS_PATH_NOT_COVERED;
+ goto out;
}
/* Prepare to test only for '/' components in the given path,
* so if a Windows path replace all '\\' characters with '/'.
* For a POSIX DFS path we know all separators are already '/'. */
- pstrcpy(canon_dfspath, dfspath);
+ canon_dfspath = talloc_strdup(ctx, dfspath);
+ if (!canon_dfspath) {
+ status = NT_STATUS_NO_MEMORY;
+ goto out;
+ }
if (!pdp->posix_path) {
string_replace(canon_dfspath, '\\', '/');
}
+ /*
+ * localpath comes out of unix_convert, so it has
+ * no trailing backslash. Make sure that canon_dfspath hasn't either.
+ * Fix for bug #4860 from Jan Martin <Jan.Martin@rwedea.com>.
+ */
+
+ trim_char(canon_dfspath,0,'/');
+
/*
* Redirect if any component in the path is a link.
- * We do this by walking backwards through the
+ * We do this by walking backwards through the
* local path, chopping off the last component
* in both the local path and the canonicalized
* DFS path. If we hit a DFS link then we're done.
*/
- p = strrchr_m(localpath, '/');
+ p = strrchr_m(smb_fname->base_name, '/');
if (consumedcntp) {
q = strrchr_m(canon_dfspath, '/');
}
*q = '\0';
}
- if (is_msdfs_link(conn, localpath, targetpath, NULL)) {
+ if (is_msdfs_link_internal(ctx, conn,
+ smb_fname->base_name, pp_targetpath,
+ NULL)) {
DEBUG(4, ("dfs_path_lookup: Redirecting %s because "
- "parent %s is dfs link\n", dfspath, localpath));
+ "parent %s is dfs link\n", dfspath,
+ smb_fname_str_dbg(smb_fname)));
if (consumedcntp) {
*consumedcntp = strlen(canon_dfspath);
DEBUG(10, ("dfs_path_lookup: Path consumed: %s "
- "(%d)\n", canon_dfspath, *consumedcntp));
+ "(%d)\n",
+ canon_dfspath,
+ *consumedcntp));
}
- return NT_STATUS_PATH_NOT_COVERED;
+ status = NT_STATUS_PATH_NOT_COVERED;
+ goto out;
}
/* Step back on the filesystem. */
- p = strrchr_m(localpath, '/');
+ p = strrchr_m(smb_fname->base_name, '/');
if (consumedcntp) {
/* And in the canonicalized dfs path. */
}
}
- return NT_STATUS_OK;
+ status = NT_STATUS_OK;
+ out:
+ TALLOC_FREE(smb_fname);
+ return status;
}
/*****************************************************************
Decides if a dfs pathname should be redirected or not.
If not, the pathname is converted to a tcon-relative local unix path
- search_wcard_flag: this flag performs 2 functions bother related
+ search_wcard_flag: this flag performs 2 functions both related
to searches. See resolve_dfs_path() and parse_dfs_path_XX()
for details.
(mapped into a local path).
or NT_STATUS_NOT_COVERED meaning return a DFS redirect, or
any other NT_STATUS error which is a genuine error to be
- returned to the client.
+ returned to the client.
*****************************************************************/
-static NTSTATUS dfs_redirect( connection_struct *conn,
- pstring dfs_path,
- BOOL search_wcard_flag,
- BOOL *ppath_contains_wcard)
+static NTSTATUS dfs_redirect(TALLOC_CTX *ctx,
+ connection_struct *conn,
+ const char *path_in,
+ bool search_wcard_flag,
+ char **pp_path_out,
+ bool *ppath_contains_wcard)
{
NTSTATUS status;
- struct dfs_path dp;
- pstring targetpath;
-
- status = parse_dfs_path(dfs_path, search_wcard_flag, &dp, ppath_contains_wcard);
+ struct dfs_path *pdp = TALLOC_P(ctx, struct dfs_path);
+
+ if (!pdp) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ status = parse_dfs_path(conn, path_in, search_wcard_flag, pdp,
+ ppath_contains_wcard);
if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(pdp);
return status;
}
- if (dp.reqpath[0] == '\0') {
- pstrcpy(dfs_path, dp.reqpath);
+ if (pdp->reqpath[0] == '\0') {
+ TALLOC_FREE(pdp);
+ *pp_path_out = talloc_strdup(ctx, "");
+ if (!*pp_path_out) {
+ return NT_STATUS_NO_MEMORY;
+ }
DEBUG(5,("dfs_redirect: self-referral.\n"));
return NT_STATUS_OK;
}
path and return OK */
if (!lp_msdfs_root(SNUM(conn))) {
- pstrcpy(dfs_path, dp.reqpath);
+ *pp_path_out = talloc_strdup(ctx, pdp->reqpath);
+ TALLOC_FREE(pdp);
+ if (!*pp_path_out) {
+ return NT_STATUS_NO_MEMORY;
+ }
return NT_STATUS_OK;
}
/* If it looked like a local path (zero hostname/servicename)
- * just treat as a tcon-relative path. */
+ * just treat as a tcon-relative path. */
- if (dp.hostname[0] == '\0' && dp.servicename[0] == '\0') {
- pstrcpy(dfs_path, dp.reqpath);
+ if (pdp->hostname[0] == '\0' && pdp->servicename[0] == '\0') {
+ *pp_path_out = talloc_strdup(ctx, pdp->reqpath);
+ TALLOC_FREE(pdp);
+ if (!*pp_path_out) {
+ return NT_STATUS_NO_MEMORY;
+ }
return NT_STATUS_OK;
}
- if (!( strequal(dp.servicename, lp_servicename(SNUM(conn)))
- || (strequal(dp.servicename, HOMES_NAME)
- && strequal(lp_servicename(SNUM(conn)), get_current_username()) )) ) {
+ if (!( strequal(pdp->servicename, lp_servicename(SNUM(conn)))
+ || (strequal(pdp->servicename, HOMES_NAME)
+ && strequal(lp_servicename(SNUM(conn)),
+ conn->session_info->sanitized_username) )) ) {
/* The given sharename doesn't match this connection. */
+ TALLOC_FREE(pdp);
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
- status = dfs_path_lookup(conn, dfs_path, &dp,
- search_wcard_flag, NULL, targetpath);
+ status = dfs_path_lookup(ctx, conn, path_in, pdp,
+ search_wcard_flag, NULL, NULL);
if (!NT_STATUS_IS_OK(status)) {
if (NT_STATUS_EQUAL(status, NT_STATUS_PATH_NOT_COVERED)) {
- DEBUG(3,("dfs_redirect: Redirecting %s\n", dfs_path));
+ DEBUG(3,("dfs_redirect: Redirecting %s\n", path_in));
} else {
- DEBUG(10,("dfs_redirect: dfs_path_lookup failed for %s with %s\n",
- dfs_path, nt_errstr(status) ));
+ DEBUG(10,("dfs_redirect: dfs_path_lookup "
+ "failed for %s with %s\n",
+ path_in, nt_errstr(status) ));
}
return status;
}
- DEBUG(3,("dfs_redirect: Not redirecting %s.\n", dfs_path));
+ DEBUG(3,("dfs_redirect: Not redirecting %s.\n", path_in));
/* Form non-dfs tcon-relative path */
- pstrcpy(dfs_path, dp.reqpath);
+ *pp_path_out = talloc_strdup(ctx, pdp->reqpath);
+ TALLOC_FREE(pdp);
+ if (!*pp_path_out) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(3,("dfs_redirect: Path %s converted to non-dfs path %s\n",
+ path_in,
+ *pp_path_out));
- DEBUG(3,("dfs_redirect: Path converted to non-dfs path %s\n", dfs_path));
return NT_STATUS_OK;
}
Return a self referral.
**********************************************************************/
-static BOOL self_ref(TALLOC_CTX *ctx,
+static NTSTATUS self_ref(TALLOC_CTX *ctx,
const char *dfs_path,
struct junction_map *jucn,
int *consumedcntp,
- BOOL *self_referralp)
+ bool *self_referralp)
{
struct referral *ref;
jucn->referral_count = 1;
if((ref = TALLOC_ZERO_P(ctx, struct referral)) == NULL) {
- DEBUG(0,("self_ref: talloc failed for referral\n"));
- return False;
+ return NT_STATUS_NO_MEMORY;
}
- pstrcpy(ref->alternate_path,dfs_path);
+ ref->alternate_path = talloc_strdup(ctx, dfs_path);
+ if (!ref->alternate_path) {
+ return NT_STATUS_NO_MEMORY;
+ }
ref->proximity = 0;
ref->ttl = REFERRAL_TTL;
jucn->referral_list = ref;
*consumedcntp = strlen(dfs_path);
- return True;
+ return NT_STATUS_OK;
}
/**********************************************************************
junction_map structure.
**********************************************************************/
-BOOL get_referred_path(TALLOC_CTX *ctx,
+NTSTATUS get_referred_path(TALLOC_CTX *ctx,
const char *dfs_path,
struct junction_map *jucn,
int *consumedcntp,
- BOOL *self_referralp)
+ bool *self_referralp)
{
- struct connection_struct conns;
- struct connection_struct *conn = &conns;
- struct dfs_path dp;
- pstring conn_path;
- pstring targetpath;
+ struct connection_struct *conn;
+ char *targetpath = NULL;
int snum;
- NTSTATUS status;
- BOOL ret = False;
- BOOL dummy;
+ NTSTATUS status = NT_STATUS_NOT_FOUND;
+ bool dummy;
+ struct dfs_path *pdp = TALLOC_P(ctx, struct dfs_path);
+ char *oldpath;
- ZERO_STRUCT(conns);
+ if (!pdp) {
+ return NT_STATUS_NO_MEMORY;
+ }
*self_referralp = False;
- status = parse_dfs_path(dfs_path, False, &dp, &dummy);
+ status = parse_dfs_path(NULL, dfs_path, False, pdp, &dummy);
if (!NT_STATUS_IS_OK(status)) {
- return False;
+ return status;
}
- /* Verify hostname in path */
- if (!is_myname_or_ipaddr(dp.hostname)) {
- DEBUG(3, ("get_referred_path: Invalid hostname %s in path %s\n",
- dp.hostname, dfs_path));
- return False;
+ jucn->service_name = talloc_strdup(ctx, pdp->servicename);
+ jucn->volume_name = talloc_strdup(ctx, pdp->reqpath);
+ if (!jucn->service_name || !jucn->volume_name) {
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NO_MEMORY;
}
- fstrcpy(jucn->service_name, dp.servicename);
- pstrcpy(jucn->volume_name, dp.reqpath);
-
/* Verify the share is a dfs root */
snum = lp_servicenumber(jucn->service_name);
if(snum < 0) {
- if ((snum = find_service(jucn->service_name)) < 0) {
- return False;
+ char *service_name = NULL;
+ if ((snum = find_service(ctx, jucn->service_name, &service_name)) < 0) {
+ return NT_STATUS_NOT_FOUND;
+ }
+ if (!service_name) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ TALLOC_FREE(jucn->service_name);
+ jucn->service_name = talloc_strdup(ctx, service_name);
+ if (!jucn->service_name) {
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NO_MEMORY;
}
}
- if (!lp_msdfs_root(snum)) {
- DEBUG(3,("get_referred_path: |%s| in dfs path %s is not a dfs root.\n",
- dp.servicename, dfs_path));
- goto out;
+ if (!lp_msdfs_root(snum) && (*lp_msdfs_proxy(snum) == '\0')) {
+ DEBUG(3,("get_referred_path: |%s| in dfs path %s is not "
+ "a dfs root.\n",
+ pdp->servicename, dfs_path));
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NOT_FOUND;
}
/*
* Self referrals are tested with a anonymous IPC connection and
- * a GET_DFS_REFERRAL call to \\server\share. (which means dp.reqpath[0] points
- * to an empty string). create_conn_struct cd's into the directory and will
- * fail if it cannot (as the anonymous user). Cope with this.
+ * a GET_DFS_REFERRAL call to \\server\share. (which means
+ * dp.reqpath[0] points to an empty string). create_conn_struct cd's
+ * into the directory and will fail if it cannot (as the anonymous
+ * user). Cope with this.
*/
- if (dp.reqpath[0] == '\0') {
+ if (pdp->reqpath[0] == '\0') {
+ char *tmp;
struct referral *ref;
if (*lp_msdfs_proxy(snum) == '\0') {
+ TALLOC_FREE(pdp);
return self_ref(ctx,
dfs_path,
jucn,
self_referralp);
}
- /*
+ /*
* It's an msdfs proxy share. Redirect to
* the configured target share.
*/
jucn->referral_count = 1;
if ((ref = TALLOC_ZERO_P(ctx, struct referral)) == NULL) {
- DEBUG(0, ("malloc failed for referral\n"));
- goto out;
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NO_MEMORY;
}
- pstrcpy(ref->alternate_path, lp_msdfs_proxy(snum));
- if (dp.reqpath[0] != '\0') {
- pstrcat(ref->alternate_path, dp.reqpath);
+ if (!(tmp = talloc_strdup(ctx, lp_msdfs_proxy(snum)))) {
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ trim_string(tmp, "\\", 0);
+
+ ref->alternate_path = talloc_asprintf(ctx, "\\%s", tmp);
+ TALLOC_FREE(tmp);
+
+ if (!ref->alternate_path) {
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (pdp->reqpath[0] != '\0') {
+ ref->alternate_path = talloc_asprintf_append(
+ ref->alternate_path,
+ "%s",
+ pdp->reqpath);
+ if (!ref->alternate_path) {
+ TALLOC_FREE(pdp);
+ return NT_STATUS_NO_MEMORY;
+ }
}
ref->proximity = 0;
ref->ttl = REFERRAL_TTL;
jucn->referral_list = ref;
*consumedcntp = strlen(dfs_path);
- ret = True;
- goto out;
+ TALLOC_FREE(pdp);
+ return NT_STATUS_OK;
}
- pstrcpy(conn_path, lp_pathname(snum));
- if (!create_conn_struct(conn, snum, conn_path)) {
- return False;
+ status = create_conn_struct(ctx, &conn, snum, lp_pathname(snum),
+ NULL, &oldpath);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(pdp);
+ return status;
}
/* If this is a DFS path dfs_lookup should return
* NT_STATUS_PATH_NOT_COVERED. */
- status = dfs_path_lookup(conn, dfs_path, &dp,
- False, consumedcntp, targetpath);
+ status = dfs_path_lookup(ctx, conn, dfs_path, pdp,
+ False, consumedcntp, &targetpath);
if (!NT_STATUS_EQUAL(status, NT_STATUS_PATH_NOT_COVERED)) {
DEBUG(3,("get_referred_path: No valid referrals for path %s\n",
dfs_path));
- goto out;
+ goto err_exit;
}
/* We know this is a valid dfs link. Parse the targetpath. */
&jucn->referral_count)) {
DEBUG(3,("get_referred_path: failed to parse symlink "
"target %s\n", targetpath ));
- goto out;
+ status = NT_STATUS_NOT_FOUND;
+ goto err_exit;
}
- ret = True;
-
-out:
-
- conn_free_internal(conn);
- return ret;
+ status = NT_STATUS_OK;
+ err_exit:
+ vfs_ChDir(conn, oldpath);
+ SMB_VFS_DISCONNECT(conn);
+ conn_free(conn);
+ TALLOC_FREE(pdp);
+ return status;
}
static int setup_ver2_dfs_referral(const char *pathname,
- char **ppdata,
+ char **ppdata,
struct junction_map *junction,
- int consumedcnt,
- BOOL self_referral)
+ bool self_referral)
{
char* pdata = *ppdata;
- unsigned char uni_requestedpath[1024];
+ smb_ucs2_t *uni_requestedpath = NULL;
int uni_reqpathoffset1,uni_reqpathoffset2;
int uni_curroffset;
int requestedpathlen=0;
DEBUG(10,("Setting up version2 referral\nRequested path:\n"));
- requestedpathlen = rpcstr_push(uni_requestedpath, pathname, sizeof(pstring),
- STR_TERMINATE);
+ requestedpathlen = rpcstr_push_talloc(talloc_tos(),
+ &uni_requestedpath, pathname);
+ if (uni_requestedpath == NULL || requestedpathlen == 0) {
+ return -1;
+ }
if (DEBUGLVL(10)) {
- dump_data(0, (const char *) uni_requestedpath,requestedpathlen);
+ dump_data(0, (unsigned char *)uni_requestedpath,
+ requestedpathlen);
}
DEBUG(10,("ref count = %u\n",junction->referral_count));
- uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
+ uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
VERSION2_REFERRAL_SIZE * junction->referral_count;
uni_reqpathoffset2 = uni_reqpathoffset1 + requestedpathlen;
uni_curroffset = uni_reqpathoffset2 + requestedpathlen;
- reply_size = REFERRAL_HEADER_SIZE + VERSION2_REFERRAL_SIZE*junction->referral_count +
- 2 * requestedpathlen;
+ reply_size = REFERRAL_HEADER_SIZE +
+ VERSION2_REFERRAL_SIZE*junction->referral_count +
+ 2 * requestedpathlen;
DEBUG(10,("reply_size: %u\n",reply_size));
/* add up the unicode lengths of all the referral paths */
for(i=0;i<junction->referral_count;i++) {
- DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
- reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
+ DEBUG(10,("referral %u : %s\n",
+ i,
+ junction->referral_list[i].alternate_path));
+ reply_size +=
+ (strlen(junction->referral_list[i].alternate_path)+1)*2;
}
DEBUG(10,("reply_size = %u\n",reply_size));
memcpy(pdata+uni_reqpathoffset2,uni_requestedpath,requestedpathlen);
/* create the header */
- SSVAL(pdata,0,consumedcnt * 2); /* path consumed */
- SSVAL(pdata,2,junction->referral_count); /* number of referral in this pkt */
+ SSVAL(pdata,0,requestedpathlen - 2); /* UCS2 of path consumed minus
+ 2 byte null */
+ /* number of referral in this pkt */
+ SSVAL(pdata,2,junction->referral_count);
if(self_referral) {
- SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
+ SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
} else {
SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
}
} else {
SSVAL(pdata,offset+4,0);
}
- SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
+
+ /* ref_flags :use path_consumed bytes? */
+ SSVAL(pdata,offset+6,0);
SIVAL(pdata,offset+8,ref->proximity);
SIVAL(pdata,offset+12,ref->ttl);
SSVAL(pdata,offset+16,uni_reqpathoffset1-offset);
SSVAL(pdata,offset+18,uni_reqpathoffset2-offset);
/* copy referred path into current offset */
- unilen = rpcstr_push(pdata+uni_curroffset, ref->alternate_path,
- sizeof(pstring), STR_UNICODE);
+ unilen = rpcstr_push(pdata+uni_curroffset,
+ ref->alternate_path,
+ reply_size - uni_curroffset,
+ STR_UNICODE);
SSVAL(pdata,offset+20,uni_curroffset-offset);
}
static int setup_ver3_dfs_referral(const char *pathname,
- char **ppdata,
+ char **ppdata,
struct junction_map *junction,
- int consumedcnt,
- BOOL self_referral)
+ bool self_referral)
{
- char* pdata = *ppdata;
+ char *pdata = *ppdata;
- unsigned char uni_reqpath[1024];
+ smb_ucs2_t *uni_reqpath = NULL;
int uni_reqpathoffset1, uni_reqpathoffset2;
int uni_curroffset;
int reply_size = 0;
int reqpathlen = 0;
int offset,i=0;
-
+
DEBUG(10,("setting up version3 referral\n"));
- reqpathlen = rpcstr_push(uni_reqpath, pathname, sizeof(pstring), STR_TERMINATE);
-
+ reqpathlen = rpcstr_push_talloc(talloc_tos(), &uni_reqpath, pathname);
+ if (uni_reqpath == NULL || reqpathlen == 0) {
+ return -1;
+ }
+
if (DEBUGLVL(10)) {
- dump_data(0, (char *) uni_reqpath,reqpathlen);
+ dump_data(0, (unsigned char *)uni_reqpath,
+ reqpathlen);
}
- uni_reqpathoffset1 = REFERRAL_HEADER_SIZE + VERSION3_REFERRAL_SIZE * junction->referral_count;
+ uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
+ VERSION3_REFERRAL_SIZE * junction->referral_count;
uni_reqpathoffset2 = uni_reqpathoffset1 + reqpathlen;
reply_size = uni_curroffset = uni_reqpathoffset2 + reqpathlen;
for(i=0;i<junction->referral_count;i++) {
- DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
- reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
+ DEBUG(10,("referral %u : %s\n",
+ i,
+ junction->referral_list[i].alternate_path));
+ reply_size +=
+ (strlen(junction->referral_list[i].alternate_path)+1)*2;
}
pdata = (char *)SMB_REALLOC(pdata,reply_size);
if(pdata == NULL) {
- DEBUG(0,("version3 referral setup: malloc failed for Realloc!\n"));
+ DEBUG(0,("version3 referral setup:"
+ "malloc failed for Realloc!\n"));
return -1;
}
*ppdata = pdata;
/* create the header */
- SSVAL(pdata,0,consumedcnt * 2); /* path consumed */
+ SSVAL(pdata,0,reqpathlen - 2); /* UCS2 of path consumed minus
+ 2 byte null */
SSVAL(pdata,2,junction->referral_count); /* number of referral */
if(self_referral) {
- SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
+ SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
} else {
SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
}
-
+
/* copy in the reqpaths */
memcpy(pdata+uni_reqpathoffset1,uni_reqpath,reqpathlen);
memcpy(pdata+uni_reqpathoffset2,uni_reqpath,reqpathlen);
-
+
offset = 8;
for(i=0;i<junction->referral_count;i++) {
struct referral* ref = &(junction->referral_list[i]);
SSVAL(pdata,offset+4,0);
}
- SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
+ /* ref_flags :use path_consumed bytes? */
+ SSVAL(pdata,offset+6,0);
SIVAL(pdata,offset+8,ref->ttl);
-
+
SSVAL(pdata,offset+12,uni_reqpathoffset1-offset);
SSVAL(pdata,offset+14,uni_reqpathoffset2-offset);
/* copy referred path into current offset */
unilen = rpcstr_push(pdata+uni_curroffset,ref->alternate_path,
- sizeof(pstring), STR_UNICODE | STR_TERMINATE);
+ reply_size - uni_curroffset,
+ STR_UNICODE | STR_TERMINATE);
SSVAL(pdata,offset+16,uni_curroffset-offset);
/* copy 0x10 bytes of 00's in the ServiceSite GUID */
memset(pdata+offset+18,'\0',16);
int setup_dfs_referral(connection_struct *orig_conn,
const char *dfs_path,
int max_referral_level,
- char **ppdata)
+ char **ppdata, NTSTATUS *pstatus)
{
- struct junction_map junction;
+ struct junction_map *junction = NULL;
int consumedcnt = 0;
- BOOL self_referral = False;
+ bool self_referral = False;
int reply_size = 0;
char *pathnamep = NULL;
- pstring local_dfs_path;
+ char *local_dfs_path = NULL;
TALLOC_CTX *ctx;
if (!(ctx=talloc_init("setup_dfs_referral"))) {
+ *pstatus = NT_STATUS_NO_MEMORY;
return -1;
}
- ZERO_STRUCT(junction);
-
/* get the junction entry */
if (!dfs_path) {
talloc_destroy(ctx);
+ *pstatus = NT_STATUS_NOT_FOUND;
return -1;
}
- /*
+ /*
* Trim pathname sent by client so it begins with only one backslash.
* Two backslashes confuse some dfs clients
*/
- pstrcpy(local_dfs_path, dfs_path);
+ local_dfs_path = talloc_strdup(ctx,dfs_path);
+ if (!local_dfs_path) {
+ *pstatus = NT_STATUS_NO_MEMORY;
+ talloc_destroy(ctx);
+ return -1;
+ }
pathnamep = local_dfs_path;
- while (IS_DIRECTORY_SEP(pathnamep[0]) && IS_DIRECTORY_SEP(pathnamep[1])) {
+ while (IS_DIRECTORY_SEP(pathnamep[0]) &&
+ IS_DIRECTORY_SEP(pathnamep[1])) {
pathnamep++;
}
+ junction = TALLOC_ZERO_P(ctx, struct junction_map);
+ if (!junction) {
+ *pstatus = NT_STATUS_NO_MEMORY;
+ talloc_destroy(ctx);
+ return -1;
+ }
+
/* The following call can change cwd. */
- if (!get_referred_path(ctx, pathnamep, &junction, &consumedcnt, &self_referral)) {
+ *pstatus = get_referred_path(ctx, pathnamep, junction,
+ &consumedcnt, &self_referral);
+ if (!NT_STATUS_IS_OK(*pstatus)) {
vfs_ChDir(orig_conn,orig_conn->connectpath);
talloc_destroy(ctx);
return -1;
}
vfs_ChDir(orig_conn,orig_conn->connectpath);
-
+
if (!self_referral) {
pathnamep[consumedcnt] = '\0';
if( DEBUGLVL( 3 ) ) {
int i=0;
- dbgtext("setup_dfs_referral: Path %s to alternate path(s):",pathnamep);
- for(i=0;i<junction.referral_count;i++)
- dbgtext(" %s",junction.referral_list[i].alternate_path);
+ dbgtext("setup_dfs_referral: Path %s to "
+ "alternate path(s):",
+ pathnamep);
+ for(i=0;i<junction->referral_count;i++)
+ dbgtext(" %s",
+ junction->referral_list[i].alternate_path);
dbgtext(".\n");
}
}
switch(max_referral_level) {
case 2:
- reply_size = setup_ver2_dfs_referral(pathnamep, ppdata, &junction,
- consumedcnt, self_referral);
+ reply_size = setup_ver2_dfs_referral(pathnamep,
+ ppdata, junction,
+ self_referral);
break;
case 3:
- reply_size = setup_ver3_dfs_referral(pathnamep, ppdata, &junction,
- consumedcnt, self_referral);
+ reply_size = setup_ver3_dfs_referral(pathnamep, ppdata,
+ junction, self_referral);
break;
default:
- DEBUG(0,("setup_dfs_referral: Invalid dfs referral version: %d\n", max_referral_level));
+ DEBUG(0,("setup_dfs_referral: Invalid dfs referral "
+ "version: %d\n",
+ max_referral_level));
talloc_destroy(ctx);
+ *pstatus = NT_STATUS_INVALID_LEVEL;
return -1;
}
-
+
if (DEBUGLVL(10)) {
DEBUGADD(0,("DFS Referral pdata:\n"));
- dump_data(0,*ppdata,reply_size);
+ dump_data(0,(uint8 *)*ppdata,reply_size);
}
talloc_destroy(ctx);
+ *pstatus = NT_STATUS_OK;
return reply_size;
}
Creates a junction structure from a DFS pathname
**********************************************************************/
-BOOL create_junction(const char *dfs_path, struct junction_map *jucn)
+bool create_junction(TALLOC_CTX *ctx,
+ const char *dfs_path,
+ struct junction_map *jucn)
{
int snum;
- BOOL dummy;
- struct dfs_path dp;
-
- NTSTATUS status = parse_dfs_path(dfs_path, False, &dp, &dummy);
+ bool dummy;
+ struct dfs_path *pdp = TALLOC_P(ctx,struct dfs_path);
+ NTSTATUS status;
+ if (!pdp) {
+ return False;
+ }
+ status = parse_dfs_path(NULL, dfs_path, False, pdp, &dummy);
if (!NT_STATUS_IS_OK(status)) {
return False;
}
/* check if path is dfs : validate first token */
- if (!is_myname_or_ipaddr(dp.hostname)) {
- DEBUG(4,("create_junction: Invalid hostname %s in dfs path %s\n",
- dp.hostname, dfs_path));
+ if (!is_myname_or_ipaddr(pdp->hostname)) {
+ DEBUG(4,("create_junction: Invalid hostname %s "
+ "in dfs path %s\n",
+ pdp->hostname, dfs_path));
+ TALLOC_FREE(pdp);
return False;
}
/* Check for a non-DFS share */
- snum = lp_servicenumber(dp.servicename);
+ snum = lp_servicenumber(pdp->servicename);
if(snum < 0 || !lp_msdfs_root(snum)) {
DEBUG(4,("create_junction: %s is not an msdfs root.\n",
- dp.servicename));
+ pdp->servicename));
+ TALLOC_FREE(pdp);
return False;
}
- fstrcpy(jucn->service_name,dp.servicename);
- pstrcpy(jucn->volume_name,dp.reqpath);
- pstrcpy(jucn->comment, lp_comment(snum));
+ jucn->service_name = talloc_strdup(ctx, pdp->servicename);
+ jucn->volume_name = talloc_strdup(ctx, pdp->reqpath);
+ jucn->comment = talloc_strdup(ctx, lp_comment(snum));
+
+ TALLOC_FREE(pdp);
+ if (!jucn->service_name || !jucn->volume_name || ! jucn->comment) {
+ return False;
+ }
return True;
}
/**********************************************************************
- Forms a valid Unix pathname from the junction
+ Forms a valid Unix pathname from the junction
**********************************************************************/
-static BOOL junction_to_local_path(struct junction_map *jucn,
- char *path,
- int max_pathlen,
- connection_struct *conn_out)
+static bool junction_to_local_path(const struct junction_map *jucn,
+ char **pp_path_out,
+ connection_struct **conn_out,
+ char **oldpath)
{
int snum;
- pstring conn_path;
+ NTSTATUS status;
snum = lp_servicenumber(jucn->service_name);
if(snum < 0) {
return False;
}
-
- safe_strcpy(path, lp_pathname(snum), max_pathlen-1);
- safe_strcat(path, "/", max_pathlen-1);
- safe_strcat(path, jucn->volume_name, max_pathlen-1);
-
- pstrcpy(conn_path, lp_pathname(snum));
- if (!create_conn_struct(conn_out, snum, conn_path)) {
+ status = create_conn_struct(talloc_tos(), conn_out, snum,
+ lp_pathname(snum), NULL, oldpath);
+ if (!NT_STATUS_IS_OK(status)) {
return False;
}
+ *pp_path_out = talloc_asprintf(*conn_out,
+ "%s/%s",
+ lp_pathname(snum),
+ jucn->volume_name);
+ if (!*pp_path_out) {
+ vfs_ChDir(*conn_out, *oldpath);
+ SMB_VFS_DISCONNECT(*conn_out);
+ conn_free(*conn_out);
+ return False;
+ }
return True;
}
-BOOL create_msdfs_link(struct junction_map *jucn, BOOL exists)
+bool create_msdfs_link(const struct junction_map *jucn)
{
- pstring path;
- pstring msdfs_link;
- connection_struct conns;
- connection_struct *conn = &conns;
+ char *path = NULL;
+ char *cwd;
+ char *msdfs_link = NULL;
+ connection_struct *conn;
int i=0;
- BOOL insert_comma = False;
- BOOL ret = False;
+ bool insert_comma = False;
+ bool ret = False;
- ZERO_STRUCT(conns);
-
- if(!junction_to_local_path(jucn, path, sizeof(path), conn)) {
+ if(!junction_to_local_path(jucn, &path, &conn, &cwd)) {
return False;
}
-
+
/* Form the msdfs_link contents */
- pstrcpy(msdfs_link, "msdfs:");
+ msdfs_link = talloc_strdup(conn, "msdfs:");
+ if (!msdfs_link) {
+ goto out;
+ }
for(i=0; i<jucn->referral_count; i++) {
- char* refpath = jucn->referral_list[i].alternate_path;
-
+ char *refpath = jucn->referral_list[i].alternate_path;
+
/* Alternate paths always use Windows separators. */
trim_char(refpath, '\\', '\\');
if(*refpath == '\0') {
continue;
}
if (i > 0 && insert_comma) {
- pstrcat(msdfs_link, ",");
+ msdfs_link = talloc_asprintf_append_buffer(msdfs_link,
+ ",%s",
+ refpath);
+ } else {
+ msdfs_link = talloc_asprintf_append_buffer(msdfs_link,
+ "%s",
+ refpath);
}
- pstrcat(msdfs_link, refpath);
+ if (!msdfs_link) {
+ goto out;
+ }
if (!insert_comma) {
insert_comma = True;
}
DEBUG(5,("create_msdfs_link: Creating new msdfs link: %s -> %s\n",
path, msdfs_link));
- if(exists) {
- if(SMB_VFS_UNLINK(conn,path)!=0) {
+ if(SMB_VFS_SYMLINK(conn, msdfs_link, path) < 0) {
+ if (errno == EEXIST) {
+ struct smb_filename *smb_fname = NULL;
+ NTSTATUS status;
+
+ status = create_synthetic_smb_fname(talloc_tos(), path,
+ NULL, NULL,
+ &smb_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ goto out;
+ }
+
+ if(SMB_VFS_UNLINK(conn, smb_fname)!=0) {
+ TALLOC_FREE(smb_fname);
+ goto out;
+ }
+ TALLOC_FREE(smb_fname);
+ }
+ if (SMB_VFS_SYMLINK(conn, msdfs_link, path) < 0) {
+ DEBUG(1,("create_msdfs_link: symlink failed "
+ "%s -> %s\nError: %s\n",
+ path, msdfs_link, strerror(errno)));
goto out;
}
}
- if(SMB_VFS_SYMLINK(conn, msdfs_link, path) < 0) {
- DEBUG(1,("create_msdfs_link: symlink failed %s -> %s\nError: %s\n",
- path, msdfs_link, strerror(errno)));
- goto out;
- }
-
-
ret = True;
out:
+ vfs_ChDir(conn, cwd);
+ SMB_VFS_DISCONNECT(conn);
+ conn_free(conn);
+ return ret;
+}
+
+bool remove_msdfs_link(const struct junction_map *jucn)
+{
+ char *path = NULL;
+ char *cwd;
+ connection_struct *conn;
+ bool ret = False;
+ struct smb_filename *smb_fname = NULL;
+ NTSTATUS status;
+
+ if (!junction_to_local_path(jucn, &path, &conn, &cwd)) {
+ return false;
+ }
+
+ status = create_synthetic_smb_fname(talloc_tos(), path,
+ NULL, NULL,
+ &smb_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ return false;
+ }
- conn_free_internal(conn);
+ if( SMB_VFS_UNLINK(conn, smb_fname) == 0 ) {
+ ret = True;
+ }
+
+ TALLOC_FREE(smb_fname);
+ vfs_ChDir(conn, cwd);
+ SMB_VFS_DISCONNECT(conn);
+ conn_free(conn);
return ret;
}
-BOOL remove_msdfs_link(struct junction_map *jucn)
+/*********************************************************************
+ Return the number of DFS links at the root of this share.
+*********************************************************************/
+
+static int count_dfs_links(TALLOC_CTX *ctx, int snum)
{
- pstring path;
- connection_struct conns;
- connection_struct *conn = &conns;
- BOOL ret = False;
+ size_t cnt = 0;
+ SMB_STRUCT_DIR *dirp = NULL;
+ const char *dname = NULL;
+ char *talloced = NULL;
+ const char *connect_path = lp_pathname(snum);
+ const char *msdfs_proxy = lp_msdfs_proxy(snum);
+ connection_struct *conn;
+ NTSTATUS status;
+ char *cwd;
+
+ if(*connect_path == '\0') {
+ return 0;
+ }
+
+ /*
+ * Fake up a connection struct for the VFS layer.
+ */
+
+ status = create_conn_struct(talloc_tos(), &conn, snum, connect_path,
+ NULL, &cwd);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("create_conn_struct failed: %s\n",
+ nt_errstr(status)));
+ return 0;
+ }
- ZERO_STRUCT(conns);
+ /* Count a link for the msdfs root - convention */
+ cnt = 1;
- if( junction_to_local_path(jucn, path, sizeof(path), conn) ) {
- if( SMB_VFS_UNLINK(conn, path) == 0 ) {
- ret = True;
+ /* No more links if this is an msdfs proxy. */
+ if (*msdfs_proxy != '\0') {
+ goto out;
+ }
+
+ /* Now enumerate all dfs links */
+ dirp = SMB_VFS_OPENDIR(conn, ".", NULL, 0);
+ if(!dirp) {
+ goto out;
+ }
+
+ while ((dname = vfs_readdirname(conn, dirp, NULL, &talloced))
+ != NULL) {
+ if (is_msdfs_link(conn,
+ dname,
+ NULL)) {
+ cnt++;
}
- talloc_destroy( conn->mem_ctx );
+ TALLOC_FREE(talloced);
}
- conn_free_internal(conn);
- return ret;
+ SMB_VFS_CLOSEDIR(conn,dirp);
+
+out:
+ vfs_ChDir(conn, cwd);
+ SMB_VFS_DISCONNECT(conn);
+ conn_free(conn);
+ return cnt;
}
+/*********************************************************************
+*********************************************************************/
+
static int form_junctions(TALLOC_CTX *ctx,
int snum,
struct junction_map *jucn,
- int jn_remain)
+ size_t jn_remain)
{
- int cnt = 0;
- SMB_STRUCT_DIR *dirp;
- char *dname;
- pstring connect_path;
+ size_t cnt = 0;
+ SMB_STRUCT_DIR *dirp = NULL;
+ const char *dname = NULL;
+ char *talloced = NULL;
+ const char *connect_path = lp_pathname(snum);
char *service_name = lp_servicename(snum);
- connection_struct conn;
+ const char *msdfs_proxy = lp_msdfs_proxy(snum);
+ connection_struct *conn;
struct referral *ref = NULL;
-
- ZERO_STRUCT(conn);
+ char *cwd;
+ NTSTATUS status;
- if (jn_remain <= 0) {
+ if (jn_remain == 0) {
return 0;
}
- pstrcpy(connect_path,lp_pathname(snum));
-
if(*connect_path == '\0') {
return 0;
}
* Fake up a connection struct for the VFS layer.
*/
- if (!create_conn_struct(&conn, snum, connect_path)) {
+ status = create_conn_struct(ctx, &conn, snum, connect_path, NULL,
+ &cwd);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("create_conn_struct failed: %s\n",
+ nt_errstr(status)));
return 0;
}
- /* form a junction for the msdfs root - convention
+ /* form a junction for the msdfs root - convention
DO NOT REMOVE THIS: NT clients will not work with us
if this is not present
- */
- fstrcpy(jucn[cnt].service_name, service_name);
- jucn[cnt].volume_name[0] = '\0';
+ */
+ jucn[cnt].service_name = talloc_strdup(ctx,service_name);
+ jucn[cnt].volume_name = talloc_strdup(ctx, "");
+ if (!jucn[cnt].service_name || !jucn[cnt].volume_name) {
+ goto out;
+ }
+ jucn[cnt].comment = "";
jucn[cnt].referral_count = 1;
ref = jucn[cnt].referral_list = TALLOC_ZERO_P(ctx, struct referral);
if (jucn[cnt].referral_list == NULL) {
- DEBUG(0, ("talloc failed!\n"));
goto out;
}
ref->proximity = 0;
ref->ttl = REFERRAL_TTL;
- if (*lp_msdfs_proxy(snum) != '\0') {
- pstrcpy(ref->alternate_path, lp_msdfs_proxy(snum));
- cnt++;
- goto out;
- }
-
- pstr_sprintf(ref->alternate_path, "\\\\%s\\%s",
+ if (*msdfs_proxy != '\0') {
+ ref->alternate_path = talloc_strdup(ctx,
+ msdfs_proxy);
+ } else {
+ ref->alternate_path = talloc_asprintf(ctx,
+ "\\\\%s\\%s",
get_local_machine_name(),
service_name);
+ }
+
+ if (!ref->alternate_path) {
+ goto out;
+ }
cnt++;
+ /* Don't enumerate if we're an msdfs proxy. */
+ if (*msdfs_proxy != '\0') {
+ goto out;
+ }
+
/* Now enumerate all dfs links */
- dirp = SMB_VFS_OPENDIR(&conn, ".", NULL, 0);
+ dirp = SMB_VFS_OPENDIR(conn, ".", NULL, 0);
if(!dirp) {
goto out;
}
- while ((dname = vfs_readdirname(&conn, dirp)) != NULL) {
- pstring link_target;
+ while ((dname = vfs_readdirname(conn, dirp, NULL, &talloced))
+ != NULL) {
+ char *link_target = NULL;
if (cnt >= jn_remain) {
- SMB_VFS_CLOSEDIR(&conn,dirp);
- DEBUG(2, ("ran out of MSDFS junction slots"));
+ DEBUG(2, ("form_junctions: ran out of MSDFS "
+ "junction slots"));
+ TALLOC_FREE(talloced);
goto out;
}
- if (is_msdfs_link(&conn, dname, link_target, NULL)) {
+ if (is_msdfs_link_internal(ctx,
+ conn,
+ dname, &link_target,
+ NULL)) {
if (parse_msdfs_symlink(ctx,
link_target,
&jucn[cnt].referral_list,
&jucn[cnt].referral_count)) {
- fstrcpy(jucn[cnt].service_name, service_name);
- pstrcpy(jucn[cnt].volume_name, dname);
+ jucn[cnt].service_name = talloc_strdup(ctx,
+ service_name);
+ jucn[cnt].volume_name = talloc_strdup(ctx,
+ dname);
+ if (!jucn[cnt].service_name ||
+ !jucn[cnt].volume_name) {
+ TALLOC_FREE(talloced);
+ goto out;
+ }
+ jucn[cnt].comment = "";
cnt++;
}
+ TALLOC_FREE(link_target);
}
+ TALLOC_FREE(talloced);
}
-
- SMB_VFS_CLOSEDIR(&conn,dirp);
out:
- conn_free_internal(&conn);
+ if (dirp) {
+ SMB_VFS_CLOSEDIR(conn,dirp);
+ }
+
+ vfs_ChDir(conn, cwd);
+ conn_free(conn);
return cnt;
}
-int enum_msdfs_links(TALLOC_CTX *ctx, struct junction_map *jucn, int jn_max)
+struct junction_map *enum_msdfs_links(struct smbd_server_connection *sconn,
+ TALLOC_CTX *ctx, size_t *p_num_jn)
{
+ struct junction_map *jn = NULL;
int i=0;
+ size_t jn_count = 0;
int sharecount = 0;
- int jn_count = 0;
+ *p_num_jn = 0;
if(!lp_host_msdfs()) {
- return 0;
+ return NULL;
}
/* Ensure all the usershares are loaded. */
become_root();
load_registry_shares();
- sharecount = load_usershare_shares();
+ sharecount = load_usershare_shares(sconn);
unbecome_root();
- for(i=0;i < sharecount && (jn_max - jn_count) > 0;i++) {
+ for(i=0;i < sharecount;i++) {
if(lp_msdfs_root(i)) {
- jn_count += form_junctions(ctx, i,jucn,jn_max - jn_count);
+ jn_count += count_dfs_links(ctx, i);
}
}
- return jn_count;
-}
-
-/******************************************************************************
- Core function to resolve a dfs pathname.
-******************************************************************************/
-
-NTSTATUS resolve_dfspath(connection_struct *conn, BOOL dfs_pathnames, pstring name)
-{
- NTSTATUS status = NT_STATUS_OK;
- BOOL dummy;
- if (dfs_pathnames) {
- status = dfs_redirect(conn, name, False, &dummy);
+ if (jn_count == 0) {
+ return NULL;
}
- return status;
+ jn = talloc_array(ctx, struct junction_map, jn_count);
+ if (!jn) {
+ return NULL;
+ }
+ for(i=0; i < sharecount; i++) {
+ if (*p_num_jn >= jn_count) {
+ break;
+ }
+ if(lp_msdfs_root(i)) {
+ *p_num_jn += form_junctions(ctx, i,
+ &jn[*p_num_jn],
+ jn_count - *p_num_jn);
+ }
+ }
+ return jn;
}
/******************************************************************************
- Core function to resolve a dfs pathname possibly containing a wildcard.
- This function is identical to the above except for the BOOL param to
- dfs_redirect but I need this to be separate so it's really clear when
- we're allowing wildcards and when we're not. JRA.
+ Core function to resolve a dfs pathname possibly containing a wildcard. If
+ ppath_contains_wcard != NULL, it will be set to true if a wildcard is
+ detected during dfs resolution.
******************************************************************************/
-NTSTATUS resolve_dfspath_wcard(connection_struct *conn, BOOL dfs_pathnames, pstring name, BOOL *ppath_contains_wcard)
+NTSTATUS resolve_dfspath_wcard(TALLOC_CTX *ctx,
+ connection_struct *conn,
+ bool dfs_pathnames,
+ const char *name_in,
+ bool allow_wcards,
+ char **pp_name_out,
+ bool *ppath_contains_wcard)
{
+ bool path_contains_wcard;
NTSTATUS status = NT_STATUS_OK;
+
if (dfs_pathnames) {
- status = dfs_redirect(conn, name, True, ppath_contains_wcard);
+ status = dfs_redirect(ctx,
+ conn,
+ name_in,
+ allow_wcards,
+ pp_name_out,
+ &path_contains_wcard);
+
+ if (NT_STATUS_IS_OK(status) && ppath_contains_wcard != NULL) {
+ *ppath_contains_wcard = path_contains_wcard;
+ }
+ } else {
+ /*
+ * Cheat and just return a copy of the in ptr.
+ * Once srvstr_get_path() uses talloc it'll
+ * be a talloced ptr anyway.
+ */
+ *pp_name_out = discard_const_p(char, name_in);
}
return status;
}
git.samba.org / samba.git / blobdiff