s3-talloc Change TALLOC_ARRAY() to talloc_array()
[samba.git] / source3 / smbd / msdfs.c
index 04b9b7deaaa8fc38bc1b2691610735e720d45622..1d296e342df6127cdddec5cccb00ed879a1891d7 100644 (file)
 
 #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
@@ -36,17 +39,22 @@ extern uint32 global_client_caps;
  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,
+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)
 {
+       struct smbd_server_connection *sconn = smbd_server_conn;
        char *pathname_local;
        char *p,*temp;
        char *servicename;
@@ -74,7 +82,7 @@ static NTSTATUS parse_dfs_path(const char *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 ));
                /*
@@ -136,7 +144,10 @@ static NTSTATUS parse_dfs_path(const char *pathname,
        }
 
        /* Is this really our servicename ? */
-       if (NULL == conn_find_byname(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));
 
@@ -205,16 +216,20 @@ static NTSTATUS parse_dfs_path(const char *pathname,
 
 /********************************************************
  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 NTSTATUS create_conn_struct(TALLOC_CTX *ctx,
+NTSTATUS create_conn_struct(TALLOC_CTX *ctx,
                                connection_struct **pconn,
                                int snum,
-                               const char *path)
+                               const char *path,
+                               const struct auth_serversupplied_info *session_info,
+                               char **poldcwd)
 {
        connection_struct *conn;
        char *connpath;
+       char *oldcwd;
+       const char *vfs_user;
 
        conn = TALLOC_ZERO_P(ctx, connection_struct);
        if (conn == NULL) {
@@ -245,31 +260,65 @@ static NTSTATUS create_conn_struct(TALLOC_CTX *ctx,
 
        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);
+               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.
         */
 
+       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) {
                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_internal(conn);
+               conn_free(conn);
                return status;
        }
 
        *pconn = conn;
+       *poldcwd = oldcwd;
 
        return NT_STATUS_OK;
 }
@@ -315,7 +364,7 @@ static bool parse_msdfs_symlink(TALLOC_CTX *ctx,
                return False;
        }
 
-       alt_path = TALLOC_ARRAY(ctx, char *, MAX_REFERRAL_COUNT);
+       alt_path = talloc_array(ctx, char *, MAX_REFERRAL_COUNT);
        if (!alt_path) {
                return False;
        }
@@ -363,9 +412,10 @@ static bool parse_msdfs_symlink(TALLOC_CTX *ctx,
                reflist[i].ttl = REFERRAL_TTL;
                DEBUG(10, ("parse_msdfs_symlink: Created alt path: %s\n",
                                        reflist[i].alternate_path));
-               *refcount += 1;
        }
 
+       *refcount = count;
+
        TALLOC_FREE(alt_path);
        return True;
 }
@@ -381,15 +431,19 @@ static bool is_msdfs_link_internal(TALLOC_CTX *ctx,
                        char **pp_link_target,
                        SMB_STRUCT_STAT *sbufp)
 {
-       SMB_STRUCT_STAT st;
        int referral_len = 0;
+#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);
+               link_target = talloc_array(ctx, char, bufsize);
                if (!link_target) {
                        return False;
                }
@@ -399,21 +453,22 @@ static bool is_msdfs_link_internal(TALLOC_CTX *ctx,
                link_target = link_target_buf;
        }
 
-       if (sbufp == NULL) {
-               sbufp = &st;
-       }
+       ZERO_STRUCT(smb_fname);
+       smb_fname.base_name = discard_const_p(char, path);
 
-       if (SMB_VFS_LSTAT(conn, path, sbufp) != 0) {
+       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)) {
+       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;
+       }
 
        referral_len = SMB_VFS_READLINK(conn, path, link_target, bufsize - 1);
        if (referral_len == -1) {
@@ -481,9 +536,8 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
 {
        char *p = NULL;
        char *q = NULL;
-       SMB_STRUCT_STAT sbuf;
        NTSTATUS status;
-       char *localpath = NULL;
+       struct smb_filename *smb_fname = NULL;
        char *canon_dfspath = NULL; /* Canonicalized dfs path. (only '/'
                                  components). */
 
@@ -502,20 +556,32 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
         * think this is needed. JRA.
         */
 
-       status = unix_convert(ctx, conn, pdp->reqpath, search_flag, &localpath,
-                       NULL, &sbuf);
-       if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,
-                                       NT_STATUS_OBJECT_PATH_NOT_FOUND)) {
-               return status;
+       status = unix_convert(ctx, conn, pdp->reqpath, &smb_fname,
+                             search_flag ? UCF_ALWAYS_ALLOW_WCARD_LCOMP : 0);
+
+       if (!NT_STATUS_IS_OK(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_internal(ctx, conn, localpath, pp_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 "
@@ -525,7 +591,8 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
                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,
@@ -534,7 +601,8 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
 
        canon_dfspath = talloc_strdup(ctx, dfspath);
        if (!canon_dfspath) {
-               return NT_STATUS_NO_MEMORY;
+               status = NT_STATUS_NO_MEMORY;
+               goto out;
        }
        if (!pdp->posix_path) {
                string_replace(canon_dfspath, '\\', '/');
@@ -556,7 +624,7 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
         * 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, '/');
        }
@@ -568,9 +636,11 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
                }
 
                if (is_msdfs_link_internal(ctx, conn,
-                                       localpath, pp_targetpath, NULL)) {
+                                          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);
@@ -580,11 +650,12 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
                                        *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. */
@@ -592,7 +663,10 @@ static NTSTATUS dfs_path_lookup(TALLOC_CTX *ctx,
                }
        }
 
-       return NT_STATUS_OK;
+       status = NT_STATUS_OK;
+ out:
+       TALLOC_FREE(smb_fname);
+       return status;
 }
 
 /*****************************************************************
@@ -624,7 +698,7 @@ static NTSTATUS dfs_redirect(TALLOC_CTX *ctx,
                return NT_STATUS_NO_MEMORY;
        }
 
-       status = parse_dfs_path(path_in, search_wcard_flag, pdp,
+       status = parse_dfs_path(conn, path_in, search_wcard_flag, pdp,
                        ppath_contains_wcard);
        if (!NT_STATUS_IS_OK(status)) {
                TALLOC_FREE(pdp);
@@ -668,7 +742,7 @@ static NTSTATUS dfs_redirect(TALLOC_CTX *ctx,
        if (!( strequal(pdp->servicename, lp_servicename(SNUM(conn)))
                        || (strequal(pdp->servicename, HOMES_NAME)
                        && strequal(lp_servicename(SNUM(conn)),
-                               get_current_username()) )) ) {
+                               conn->session_info->sanitized_username) )) ) {
 
                /* The given sharename doesn't match this connection. */
                TALLOC_FREE(pdp);
@@ -752,6 +826,7 @@ NTSTATUS get_referred_path(TALLOC_CTX *ctx,
        NTSTATUS status = NT_STATUS_NOT_FOUND;
        bool dummy;
        struct dfs_path *pdp = TALLOC_P(ctx, struct dfs_path);
+       char *oldpath;
 
        if (!pdp) {
                return NT_STATUS_NO_MEMORY;
@@ -759,7 +834,7 @@ NTSTATUS get_referred_path(TALLOC_CTX *ctx,
 
        *self_referralp = False;
 
-       status = parse_dfs_path(dfs_path, False, pdp, &dummy);
+       status = parse_dfs_path(NULL, dfs_path, False, pdp, &dummy);
        if (!NT_STATUS_IS_OK(status)) {
                return status;
        }
@@ -774,11 +849,13 @@ NTSTATUS get_referred_path(TALLOC_CTX *ctx,
        /* Verify the share is a dfs root */
        snum = lp_servicenumber(jucn->service_name);
        if(snum < 0) {
-               fstring service_name;
-               fstrcpy(service_name, jucn->service_name);
-               if ((snum = find_service(service_name)) < 0) {
+               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) {
@@ -860,7 +937,8 @@ NTSTATUS get_referred_path(TALLOC_CTX *ctx,
                return NT_STATUS_OK;
        }
 
-       status = create_conn_struct(ctx, &conn, snum, lp_pathname(snum));
+       status = create_conn_struct(ctx, &conn, snum, lp_pathname(snum),
+                                   NULL, &oldpath);
        if (!NT_STATUS_IS_OK(status)) {
                TALLOC_FREE(pdp);
                return status;
@@ -875,9 +953,7 @@ NTSTATUS get_referred_path(TALLOC_CTX *ctx,
        if (!NT_STATUS_EQUAL(status, NT_STATUS_PATH_NOT_COVERED)) {
                DEBUG(3,("get_referred_path: No valid referrals for path %s\n",
                        dfs_path));
-               conn_free_internal(conn);
-               TALLOC_FREE(pdp);
-               return status;
+               goto err_exit;
        }
 
        /* We know this is a valid dfs link. Parse the targetpath. */
@@ -886,20 +962,22 @@ NTSTATUS get_referred_path(TALLOC_CTX *ctx,
                                &jucn->referral_count)) {
                DEBUG(3,("get_referred_path: failed to parse symlink "
                        "target %s\n", targetpath ));
-               conn_free_internal(conn);
-               TALLOC_FREE(pdp);
-               return NT_STATUS_NOT_FOUND;
+               status = NT_STATUS_NOT_FOUND;
+               goto err_exit;
        }
 
-       conn_free_internal(conn);
+       status = NT_STATUS_OK;
+ err_exit:
+       vfs_ChDir(conn, oldpath);
+       SMB_VFS_DISCONNECT(conn);
+       conn_free(conn);
        TALLOC_FREE(pdp);
-       return NT_STATUS_OK;
+       return status;
 }
 
 static int setup_ver2_dfs_referral(const char *pathname,
                                char **ppdata,
                                struct junction_map *junction,
-                               int consumedcnt,
                                bool self_referral)
 {
        char* pdata = *ppdata;
@@ -964,7 +1042,8 @@ static int setup_ver2_dfs_referral(const char *pathname,
        memcpy(pdata+uni_reqpathoffset2,uni_requestedpath,requestedpathlen);
 
        /* create the header */
-       SSVAL(pdata,0,consumedcnt * 2); /* path consumed */
+       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) {
@@ -1013,7 +1092,6 @@ static int setup_ver2_dfs_referral(const char *pathname,
 static int setup_ver3_dfs_referral(const char *pathname,
                                char **ppdata,
                                struct junction_map *junction,
-                               int consumedcnt,
                                bool self_referral)
 {
        char *pdata = *ppdata;
@@ -1060,7 +1138,8 @@ static int setup_ver3_dfs_referral(const char *pathname,
        *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);
@@ -1200,11 +1279,11 @@ int setup_dfs_referral(connection_struct *orig_conn,
        case 2:
                reply_size = setup_ver2_dfs_referral(pathnamep,
                                        ppdata, junction,
-                                       consumedcnt, self_referral);
+                                       self_referral);
                break;
        case 3:
                reply_size = setup_ver3_dfs_referral(pathnamep, ppdata,
-                                       junction, consumedcnt, self_referral);
+                                       junction, self_referral);
                break;
        default:
                DEBUG(0,("setup_dfs_referral: Invalid dfs referral "
@@ -1245,7 +1324,7 @@ bool create_junction(TALLOC_CTX *ctx,
        if (!pdp) {
                return False;
        }
-       status = parse_dfs_path(dfs_path, False, pdp, &dummy);
+       status = parse_dfs_path(NULL, dfs_path, False, pdp, &dummy);
        if (!NT_STATUS_IS_OK(status)) {
                return False;
        }
@@ -1285,42 +1364,47 @@ bool create_junction(TALLOC_CTX *ctx,
  **********************************************************************/
 
 static bool junction_to_local_path(const struct junction_map *jucn,
-                               char **pp_path_out,
-                               connection_struct **conn_out)
+                                  char **pp_path_out,
+                                  connection_struct **conn_out,
+                                  char **oldpath)
 {
        int snum;
+       NTSTATUS status;
 
        snum = lp_servicenumber(jucn->service_name);
        if(snum < 0) {
                return False;
        }
-       if (!NT_STATUS_IS_OK(create_conn_struct(talloc_tos(),
-                                       conn_out, snum,
-                                       lp_pathname(snum)))) {
+       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,
+       *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(const struct junction_map *jucn,
-               bool exists)
+bool create_msdfs_link(const struct junction_map *jucn)
 {
        char *path = NULL;
+       char *cwd;
        char *msdfs_link = NULL;
        connection_struct *conn;
        int i=0;
        bool insert_comma = False;
        bool ret = False;
 
-       if(!junction_to_local_path(jucn, &path, &conn)) {
+       if(!junction_to_local_path(jucn, &path, &conn, &cwd)) {
                return False;
        }
 
@@ -1361,40 +1445,71 @@ bool create_msdfs_link(const struct junction_map *jucn,
        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:
-
-       conn_free_internal(conn);
+       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) ) {
-               if( SMB_VFS_UNLINK(conn, path) == 0 ) {
-                       ret = True;
-               }
+       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;
+       }
+
+       if( SMB_VFS_UNLINK(conn, smb_fname) == 0 ) {
+               ret = True;
        }
 
-       conn_free_internal(conn);
+       TALLOC_FREE(smb_fname);
+       vfs_ChDir(conn, cwd);
+       SMB_VFS_DISCONNECT(conn);
+       conn_free(conn);
        return ret;
 }
 
@@ -1406,10 +1521,13 @@ static int count_dfs_links(TALLOC_CTX *ctx, int snum)
 {
        size_t cnt = 0;
        SMB_STRUCT_DIR *dirp = NULL;
-       char *dname = 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;
@@ -1419,8 +1537,11 @@ static int count_dfs_links(TALLOC_CTX *ctx, int snum)
         * Fake up a connection struct for the VFS layer.
         */
 
-       if (!NT_STATUS_IS_OK(create_conn_struct(talloc_tos(),
-                                       &conn, snum, connect_path))) {
+       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;
        }
 
@@ -1438,19 +1559,22 @@ static int count_dfs_links(TALLOC_CTX *ctx, int snum)
                goto out;
        }
 
-       while ((dname = vfs_readdirname(conn, dirp)) != NULL) {
+       while ((dname = vfs_readdirname(conn, dirp, NULL, &talloced))
+              != NULL) {
                if (is_msdfs_link(conn,
                                dname,
                                NULL)) {
                        cnt++;
                }
+               TALLOC_FREE(talloced);
        }
 
        SMB_VFS_CLOSEDIR(conn,dirp);
 
 out:
-
-       conn_free_internal(conn);
+       vfs_ChDir(conn, cwd);
+       SMB_VFS_DISCONNECT(conn);
+       conn_free(conn);
        return cnt;
 }
 
@@ -1464,12 +1588,15 @@ static int form_junctions(TALLOC_CTX *ctx,
 {
        size_t cnt = 0;
        SMB_STRUCT_DIR *dirp = NULL;
-       char *dname = NULL;
+       const char *dname = NULL;
+       char *talloced = NULL;
        const char *connect_path = lp_pathname(snum);
        char *service_name = lp_servicename(snum);
        const char *msdfs_proxy = lp_msdfs_proxy(snum);
        connection_struct *conn;
        struct referral *ref = NULL;
+       char *cwd;
+       NTSTATUS status;
 
        if (jn_remain == 0) {
                return 0;
@@ -1483,7 +1610,11 @@ static int form_junctions(TALLOC_CTX *ctx,
         * Fake up a connection struct for the VFS layer.
         */
 
-       if (!NT_STATUS_IS_OK(create_conn_struct(ctx, &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;
        }
 
@@ -1496,6 +1627,7 @@ static int form_junctions(TALLOC_CTX *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);
@@ -1531,12 +1663,13 @@ static int form_junctions(TALLOC_CTX *ctx,
                goto out;
        }
 
-       while ((dname = vfs_readdirname(conn, dirp)) != NULL) {
+       while ((dname = vfs_readdirname(conn, dirp, NULL, &talloced))
+              != NULL) {
                char *link_target = NULL;
                if (cnt >= jn_remain) {
-                       SMB_VFS_CLOSEDIR(conn,dirp);
                        DEBUG(2, ("form_junctions: ran out of MSDFS "
                                "junction slots"));
+                       TALLOC_FREE(talloced);
                        goto out;
                }
                if (is_msdfs_link_internal(ctx,
@@ -1554,11 +1687,15 @@ static int form_junctions(TALLOC_CTX *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);
        }
 
 out:
@@ -1567,11 +1704,13 @@ out:
                SMB_VFS_CLOSEDIR(conn,dirp);
        }
 
-       conn_free_internal(conn);
+       vfs_ChDir(conn, cwd);
+       conn_free(conn);
        return cnt;
 }
 
-struct junction_map *enum_msdfs_links(TALLOC_CTX *ctx, size_t *p_num_jn)
+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;
@@ -1586,7 +1725,7 @@ struct junction_map *enum_msdfs_links(TALLOC_CTX *ctx, size_t *p_num_jn)
        /* 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;i++) {
@@ -1597,7 +1736,7 @@ struct junction_map *enum_msdfs_links(TALLOC_CTX *ctx, size_t *p_num_jn)
        if (jn_count == 0) {
                return NULL;
        }
-       jn = TALLOC_ARRAY(ctx,  struct junction_map, jn_count);
+       jn = talloc_array(ctx,  struct junction_map, jn_count);
        if (!jn) {
                return NULL;
        }
@@ -1615,64 +1754,40 @@ struct junction_map *enum_msdfs_links(TALLOC_CTX *ctx, size_t *p_num_jn)
 }
 
 /******************************************************************************
- Core function to resolve a dfs pathname.
-******************************************************************************/
-
-NTSTATUS resolve_dfspath(TALLOC_CTX *ctx,
-                       connection_struct *conn,
-                       bool dfs_pathnames,
-                       const char *name_in,
-                       char **pp_name_out)
-{
-       NTSTATUS status = NT_STATUS_OK;
-       bool dummy;
-       if (dfs_pathnames) {
-               status = dfs_redirect(ctx,
-                                       conn,
-                                       name_in,
-                                       False,
-                                       pp_name_out,
-                                       &dummy);
-       } 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 = CONST_DISCARD(char *,name_in);
-       }
-       return status;
-}
-
-/******************************************************************************
- 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(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(ctx,
                                        conn,
                                        name_in,
-                                       True,
+                                       allow_wcards,
                                        pp_name_out,
-                                       ppath_contains_wcard);
+                                       &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 = CONST_DISCARD(char *,name_in);
+               *pp_name_out = discard_const_p(char, name_in);
        }
        return status;
 }