Revert "s3:libsmb: remove unused show_sessetup handling from do_connect()"
[metze/samba/wip.git] / source3 / libsmb / clidfs.c
index 5c5257fb6f88efca6f440cd975543328337d5d8c..d49c48859fff9dae90d081b2cd1e83bed0a71ac2 100644 (file)
@@ -25,6 +25,8 @@
 #include "msdfs.h"
 #include "trans2.h"
 #include "libsmb/nmblib.h"
+#include "../libcli/smb/smbXcli_base.h"
+#include "auth/credentials/credentials.h"
 
 /********************************************************************
  Important point.
  Ensure a connection is encrypted.
 ********************************************************************/
 
-NTSTATUS cli_cm_force_encryption(struct cli_state *c,
-                       const char *username,
-                       const char *password,
-                       const char *domain,
-                       const char *sharename)
+NTSTATUS cli_cm_force_encryption_creds(struct cli_state *c,
+                                      struct cli_credentials *creds,
+                                      const char *sharename)
 {
-       NTSTATUS status = cli_force_encryption(c,
-                                       username,
-                                       password,
-                                       domain);
+       uint16_t major, minor;
+       uint32_t caplow, caphigh;
+       NTSTATUS status;
 
-       if (NT_STATUS_EQUAL(status,NT_STATUS_NOT_SUPPORTED)) {
+       if (smbXcli_conn_protocol(c->conn) >= PROTOCOL_SMB2_02) {
+               status = smb2cli_session_encryption_on(c->smb2.session);
+               if (NT_STATUS_EQUAL(status,NT_STATUS_NOT_SUPPORTED)) {
+                       d_printf("Encryption required and "
+                               "server doesn't support "
+                               "SMB3 encryption - failing connect\n");
+               } else if (!NT_STATUS_IS_OK(status)) {
+                       d_printf("Encryption required and "
+                               "setup failed with error %s.\n",
+                               nt_errstr(status));
+               }
+               return status;
+       }
+
+       if (!SERVER_HAS_UNIX_CIFS(c)) {
                d_printf("Encryption required and "
                        "server that doesn't support "
                        "UNIX extensions - failing connect\n");
-       } else if (NT_STATUS_EQUAL(status,NT_STATUS_UNKNOWN_REVISION)) {
+               return NT_STATUS_NOT_SUPPORTED;
+       }
+
+       status = cli_unix_extensions_version(c, &major, &minor, &caplow,
+                                            &caphigh);
+       if (!NT_STATUS_IS_OK(status)) {
                d_printf("Encryption required and "
                        "can't get UNIX CIFS extensions "
                        "version from server.\n");
-       } else if (NT_STATUS_EQUAL(status,NT_STATUS_UNSUPPORTED_COMPRESSION)) {
+               return NT_STATUS_UNKNOWN_REVISION;
+       }
+
+       if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
                d_printf("Encryption required and "
                        "share %s doesn't support "
                        "encryption.\n", sharename);
-       } else if (!NT_STATUS_IS_OK(status)) {
+               return NT_STATUS_UNSUPPORTED_COMPRESSION;
+       }
+
+       status = cli_smb1_setup_encryption(c, creds);
+       if (!NT_STATUS_IS_OK(status)) {
                d_printf("Encryption required and "
                        "setup failed with error %s.\n",
                        nt_errstr(status));
+               return status;
        }
 
+       return NT_STATUS_OK;
+}
+
+NTSTATUS cli_cm_force_encryption(struct cli_state *c,
+                       const char *username,
+                       const char *password,
+                       const char *domain,
+                       const char *sharename)
+{
+       struct cli_credentials *creds = NULL;
+       NTSTATUS status;
+
+       creds = cli_session_creds_init(c,
+                                      username,
+                                      domain,
+                                      NULL, /* default realm */
+                                      password,
+                                      c->use_kerberos,
+                                      c->fallback_after_kerberos,
+                                      c->use_ccache,
+                                      c->pw_nt_hash);
+       if (creds == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       status = cli_cm_force_encryption_creds(c, creds, sharename);
+       /* gensec currently references the creds so we can't free them here */
+       talloc_unlink(c, creds);
        return status;
 }
 
@@ -77,7 +131,7 @@ NTSTATUS cli_cm_force_encryption(struct cli_state *c,
  Return a connection to a server.
 ********************************************************************/
 
-static struct cli_state *do_connect(TALLOC_CTX *ctx,
+static NTSTATUS do_connect(TALLOC_CTX *ctx,
                                        const char *server,
                                        const char *share,
                                        const struct user_auth_info *auth_info,
@@ -85,20 +139,27 @@ static struct cli_state *do_connect(TALLOC_CTX *ctx,
                                        bool force_encrypt,
                                        int max_protocol,
                                        int port,
-                                       int name_type)
+                                       int name_type,
+                                       struct cli_state **pcli)
 {
        struct cli_state *c = NULL;
        char *servicename;
        char *sharename;
        char *newserver, *newshare;
-       const char *username;
-       const char *password;
        NTSTATUS status;
+       int flags = 0;
+       enum protocol_types protocol = PROTOCOL_NONE;
+       int signing_state = get_cmdline_auth_info_signing_state(auth_info);
+       struct cli_credentials *creds = NULL;
+
+       if (force_encrypt) {
+               signing_state = SMB_SIGNING_REQUIRED;
+       }
 
        /* make a copy so we don't modify the global string 'service' */
        servicename = talloc_strdup(ctx,share);
        if (!servicename) {
-               return NULL;
+               return NT_STATUS_NO_MEMORY;
        }
        sharename = servicename;
        if (*sharename == '\\') {
@@ -108,78 +169,95 @@ static struct cli_state *do_connect(TALLOC_CTX *ctx,
                }
                sharename = strchr_m(sharename,'\\');
                if (!sharename) {
-                       return NULL;
+                       return NT_STATUS_NO_MEMORY;
                }
                *sharename = 0;
                sharename++;
        }
        if (server == NULL) {
-               return NULL;
+               return NT_STATUS_INVALID_PARAMETER;
+       }
+
+       if (get_cmdline_auth_info_use_kerberos(auth_info)) {
+               flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
+       }
+       if (get_cmdline_auth_info_fallback_after_kerberos(auth_info)) {
+               flags |= CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
+       }
+       if (get_cmdline_auth_info_use_ccache(auth_info)) {
+               flags |= CLI_FULL_CONNECTION_USE_CCACHE;
+       }
+       if (get_cmdline_auth_info_use_pw_nt_hash(auth_info)) {
+               flags |= CLI_FULL_CONNECTION_USE_NT_HASH;
        }
 
        status = cli_connect_nb(
                server, NULL, port, name_type, NULL,
-               get_cmdline_auth_info_signing_state(auth_info), &c);
+               signing_state,
+               flags, &c);
 
        if (!NT_STATUS_IS_OK(status)) {
-               d_printf("Connection to %s failed (Error %s)\n",
-                               server,
-                               nt_errstr(status));
-               return NULL;
+               if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
+                       DBG_ERR("NetBIOS support disabled, unable to connect");
+               }
+
+               DBG_WARNING("Connection to %s failed (Error %s)\n",
+                           server,
+                           nt_errstr(status));
+               return status;
        }
 
        if (max_protocol == 0) {
-               max_protocol = PROTOCOL_NT1;
+               max_protocol = PROTOCOL_LATEST;
        }
-       c->protocol = max_protocol;
-       c->use_kerberos = get_cmdline_auth_info_use_kerberos(auth_info);
-       c->fallback_after_kerberos =
-               get_cmdline_auth_info_fallback_after_kerberos(auth_info);
-       c->use_ccache = get_cmdline_auth_info_use_ccache(auth_info);
-
        DEBUG(4,(" session request ok\n"));
 
-       status = cli_negprot(c);
+       status = smbXcli_negprot(c->conn, c->timeout,
+                                lp_client_min_protocol(),
+                                max_protocol);
 
        if (!NT_STATUS_IS_OK(status)) {
                d_printf("protocol negotiation failed: %s\n",
                         nt_errstr(status));
                cli_shutdown(c);
-               return NULL;
+               return status;
+       }
+       protocol = smbXcli_conn_protocol(c->conn);
+       DEBUG(4,(" negotiated dialect[%s] against server[%s]\n",
+                smb_protocol_types_string(protocol),
+                smbXcli_conn_remote_name(c->conn)));
+
+       if (protocol >= PROTOCOL_SMB2_02) {
+               /* Ensure we ask for some initial credits. */
+               smb2cli_conn_set_max_credits(c->conn, DEFAULT_SMB2_MAX_CREDITS);
        }
 
-       username = get_cmdline_auth_info_username(auth_info);
-       password = get_cmdline_auth_info_password(auth_info);
+       creds = get_cmdline_auth_info_creds(auth_info);
 
-       if (!NT_STATUS_IS_OK(cli_session_setup(c, username,
-                                              password, strlen(password),
-                                              password, strlen(password),
-                                              lp_workgroup()))) {
+       status = cli_session_setup_creds(c, creds);
+       if (!NT_STATUS_IS_OK(status)) {
                /* If a password was not supplied then
                 * try again with a null username. */
-               if (password[0] || !username[0] ||
-                       get_cmdline_auth_info_use_kerberos(auth_info) ||
-                       !NT_STATUS_IS_OK(cli_session_setup(c, "",
-                                               "", 0,
-                                               "", 0,
-                                              lp_workgroup()))) {
-                       d_printf("session setup failed: %s\n", cli_errstr(c));
-                       if (NT_STATUS_V(cli_nt_error(c)) ==
-                           NT_STATUS_V(NT_STATUS_MORE_PROCESSING_REQUIRED))
+               if (force_encrypt || smbXcli_conn_signing_mandatory(c->conn) ||
+                       cli_credentials_authentication_requested(creds) ||
+                       cli_credentials_is_anonymous(creds) ||
+                       !NT_STATUS_IS_OK(status = cli_session_setup_anon(c)))
+               {
+                       d_printf("session setup failed: %s\n",
+                                nt_errstr(status));
+                       if (NT_STATUS_EQUAL(status,
+                                           NT_STATUS_MORE_PROCESSING_REQUIRED))
                                d_printf("did you forget to run kinit?\n");
                        cli_shutdown(c);
-                       return NULL;
+                       return status;
                }
                d_printf("Anonymous login successful\n");
-               status = cli_init_creds(c, "", lp_workgroup(), "");
-       } else {
-               status = cli_init_creds(c, username, lp_workgroup(), password);
        }
 
        if (!NT_STATUS_IS_OK(status)) {
                DEBUG(10,("cli_init_creds() failed: %s\n", nt_errstr(status)));
                cli_shutdown(c);
-               return NULL;
+               return status;
        }
 
        if ( show_sessetup ) {
@@ -198,44 +276,39 @@ static struct cli_state *do_connect(TALLOC_CTX *ctx,
           here before trying to connect to the original share.
           cli_check_msdfs_proxy() will fail if it is a normal share. */
 
-       if ((c->capabilities & CAP_DFS) &&
+       if (smbXcli_conn_dfs_supported(c->conn) &&
                        cli_check_msdfs_proxy(ctx, c, sharename,
                                &newserver, &newshare,
-                               force_encrypt,
-                               username,
-                               password,
-                               lp_workgroup())) {
+                               force_encrypt, creds)) {
                cli_shutdown(c);
                return do_connect(ctx, newserver,
                                newshare, auth_info, false,
                                force_encrypt, max_protocol,
-                               port, name_type);
+                               port, name_type, pcli);
        }
 
        /* must be a normal share */
 
-       status = cli_tcon_andx(c, sharename, "?????",
-                              password, strlen(password)+1);
+       status = cli_tree_connect_creds(c, sharename, "?????", creds);
        if (!NT_STATUS_IS_OK(status)) {
                d_printf("tree connect failed: %s\n", nt_errstr(status));
                cli_shutdown(c);
-               return NULL;
+               return status;
        }
 
        if (force_encrypt) {
-               status = cli_cm_force_encryption(c,
-                                       username,
-                                       password,
-                                       lp_workgroup(),
-                                       sharename);
+               status = cli_cm_force_encryption_creds(c,
+                                                      creds,
+                                                      sharename);
                if (!NT_STATUS_IS_OK(status)) {
                        cli_shutdown(c);
-                       return NULL;
+                       return status;
                }
        }
 
        DEBUG(4,(" tconx ok\n"));
-       return c;
+       *pcli = c;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
@@ -243,13 +316,15 @@ static struct cli_state *do_connect(TALLOC_CTX *ctx,
 
 static void cli_set_mntpoint(struct cli_state *cli, const char *mnt)
 {
-       char *name = clean_name(NULL, mnt);
+       TALLOC_CTX *frame = talloc_stackframe();
+       char *name = clean_name(frame, mnt);
        if (!name) {
+               TALLOC_FREE(frame);
                return;
        }
        TALLOC_FREE(cli->dfs_mountpoint);
        cli->dfs_mountpoint = talloc_strdup(cli, name);
-       TALLOC_FREE(name);
+       TALLOC_FREE(frame);
 }
 
 /********************************************************************
@@ -257,37 +332,37 @@ static void cli_set_mntpoint(struct cli_state *cli, const char *mnt)
  referring_cli == NULL means a new initial connection.
 ********************************************************************/
 
-static struct cli_state *cli_cm_connect(TALLOC_CTX *ctx,
-                                       struct cli_state *referring_cli,
-                                       const char *server,
-                                       const char *share,
-                                       const struct user_auth_info *auth_info,
-                                       bool show_hdr,
-                                       bool force_encrypt,
-                                       int max_protocol,
-                                       int port,
-                                       int name_type)
+static NTSTATUS cli_cm_connect(TALLOC_CTX *ctx,
+                              struct cli_state *referring_cli,
+                              const char *server,
+                              const char *share,
+                              const struct user_auth_info *auth_info,
+                              bool force_encrypt,
+                              int max_protocol,
+                              int port,
+                              int name_type,
+                              struct cli_state **pcli)
 {
        struct cli_state *cli;
+       NTSTATUS status;
 
-       cli = do_connect(ctx, server, share,
+       status = do_connect(ctx, server, share,
                                auth_info,
                                show_hdr, force_encrypt, max_protocol,
-                               port, name_type);
+                               port, name_type, &cli);
 
-       if (!cli ) {
-               return NULL;
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
        /* Enter into the list. */
        if (referring_cli) {
-               DLIST_ADD_END(referring_cli, cli, struct cli_state *);
+               DLIST_ADD_END(referring_cli, cli);
        }
 
        if (referring_cli && referring_cli->requested_posix_capabilities) {
-               uint16 major, minor;
-               uint32 caplow, caphigh;
-               NTSTATUS status;
+               uint16_t major, minor;
+               uint32_t caplow, caphigh;
                status = cli_unix_extensions_version(cli, &major, &minor,
                                                     &caplow, &caphigh);
                if (NT_STATUS_IS_OK(status)) {
@@ -297,7 +372,8 @@ static struct cli_state *cli_cm_connect(TALLOC_CTX *ctx,
                }
        }
 
-       return cli;
+       *pcli = cli;
+       return NT_STATUS_OK;
 }
 
 /********************************************************************
@@ -316,7 +392,10 @@ static struct cli_state *cli_cm_find(struct cli_state *cli,
 
        /* Search to the start of the list. */
        for (p = cli; p; p = DLIST_PREV(p)) {
-               if (strequal(server, p->desthost) &&
+               const char *remote_name =
+                       smbXcli_conn_remote_name(p->conn);
+
+               if (strequal(server, remote_name) &&
                                strequal(share,p->share)) {
                        return p;
                }
@@ -324,7 +403,10 @@ static struct cli_state *cli_cm_find(struct cli_state *cli,
 
        /* Search to the end of the list. */
        for (p = cli->next; p; p = p->next) {
-               if (strequal(server, p->desthost) &&
+               const char *remote_name =
+                       smbXcli_conn_remote_name(p->conn);
+
+               if (strequal(server, remote_name) &&
                                strequal(share,p->share)) {
                        return p;
                }
@@ -337,22 +419,24 @@ static struct cli_state *cli_cm_find(struct cli_state *cli,
  Open a client connection to a \\server\share.
 ****************************************************************************/
 
-struct cli_state *cli_cm_open(TALLOC_CTX *ctx,
+NTSTATUS cli_cm_open(TALLOC_CTX *ctx,
                                struct cli_state *referring_cli,
                                const char *server,
                                const char *share,
                                const struct user_auth_info *auth_info,
-                               bool show_hdr,
                                bool force_encrypt,
                                int max_protocol,
                                int port,
-                               int name_type)
+                               int name_type,
+                               struct cli_state **pcli)
 {
        /* Try to reuse an existing connection in this list. */
        struct cli_state *c = cli_cm_find(referring_cli, server, share);
+       NTSTATUS status;
 
        if (c) {
-               return c;
+               *pcli = c;
+               return NT_STATUS_OK;
        }
 
        if (auth_info == NULL) {
@@ -361,31 +445,36 @@ struct cli_state *cli_cm_open(TALLOC_CTX *ctx,
                d_printf("cli_cm_open() Unable to open connection [\\%s\\%s] "
                        "without auth info\n",
                        server, share );
-               return NULL;
+               return NT_STATUS_INVALID_PARAMETER;
        }
 
-       return cli_cm_connect(ctx,
+       status = cli_cm_connect(ctx,
                                referring_cli,
                                server,
                                share,
                                auth_info,
-                               show_hdr,
                                force_encrypt,
                                max_protocol,
                                port,
-                               name_type);
+                               name_type,
+                               &c);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+       *pcli = c;
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
 ****************************************************************************/
 
-void cli_cm_display(const struct cli_state *cli)
+void cli_cm_display(struct cli_state *cli)
 {
        int i;
 
        for (i=0; cli; cli = cli->next,i++ ) {
                d_printf("%d:\tserver=%s, share=%s\n",
-                       i, cli->desthost, cli->share );
+                       i, smbXcli_conn_remote_name(cli->conn), cli->share);
        }
 }
 
@@ -552,7 +641,7 @@ static char *cli_dfs_make_full_path(TALLOC_CTX *ctx,
        }
        return talloc_asprintf(ctx, "%c%s%c%s%c%s",
                        path_sep,
-                       cli->desthost,
+                       smbXcli_conn_remote_name(cli->conn),
                        path_sep,
                        cli->share,
                        path_sep,
@@ -568,10 +657,10 @@ static bool cli_dfs_check_error(struct cli_state *cli, NTSTATUS expected,
 {
        /* only deal with DS when we negotiated NT_STATUS codes and UNICODE */
 
-       if (!(cli->capabilities & CAP_UNICODE)) {
+       if (!(smbXcli_conn_use_unicode(cli->conn))) {
                return false;
        }
-       if (!(cli->capabilities & CAP_STATUS32)) {
+       if (!(smb1cli_conn_capabilities(cli->conn) & CAP_STATUS32)) {
                return false;
        }
        if (NT_STATUS_EQUAL(status, expected)) {
@@ -584,62 +673,105 @@ static bool cli_dfs_check_error(struct cli_state *cli, NTSTATUS expected,
  Get the dfs referral link.
 ********************************************************************/
 
-NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
+NTSTATUS cli_dfs_get_referral_ex(TALLOC_CTX *ctx,
                        struct cli_state *cli,
                        const char *path,
+                       uint16_t max_referral_level,
                        struct client_dfs_referral **refs,
                        size_t *num_refs,
                        size_t *consumed)
 {
-       unsigned int data_len = 0;
        unsigned int param_len = 0;
-       uint16 setup[1];
+       uint16_t recv_flags2;
        uint8_t *param = NULL;
        uint8_t *rdata = NULL;
        char *p;
        char *endp;
-       size_t pathlen = 2*(strlen(path)+1);
        smb_ucs2_t *path_ucs;
        char *consumed_path = NULL;
        uint16_t consumed_ucs;
-       uint16 num_referrals;
+       uint16_t num_referrals;
        struct client_dfs_referral *referrals = NULL;
        NTSTATUS status;
+       TALLOC_CTX *frame = talloc_stackframe();
 
        *num_refs = 0;
        *refs = NULL;
 
-       SSVAL(setup, 0, TRANSACT2_GET_DFS_REFERRAL);
-
-       param = SMB_MALLOC_ARRAY(uint8_t, 2+pathlen+2);
+       param = talloc_array(talloc_tos(), uint8_t, 2);
        if (!param) {
                status = NT_STATUS_NO_MEMORY;
                goto out;
        }
-       SSVAL(param, 0, 0x03);  /* max referral level */
-       p = (char *)(&param[2]);
-
-       path_ucs = (smb_ucs2_t *)p;
-       p += clistr_push(cli, p, path, pathlen, STR_TERMINATE);
-       param_len = PTR_DIFF(p, param);
-
-       status = cli_trans(talloc_tos(), cli, SMBtrans2,
-                          NULL, 0xffff, 0, 0,
-                          setup, 1, 0,
-                          param, param_len, 2,
-                          NULL, 0, cli->max_xmit,
-                          NULL,
-                          NULL, 0, NULL, /* rsetup */
-                          NULL, 0, NULL,
-                          &rdata, 4, &data_len);
-       if (!NT_STATUS_IS_OK(status)) {
-               goto out;
-       }
-       if (data_len < 4) {
+       SSVAL(param, 0, max_referral_level);
+
+       param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
+                                     path, strlen(path)+1,
+                                     NULL);
+       if (!param) {
+               status = NT_STATUS_NO_MEMORY;
                goto out;
        }
+       param_len = talloc_get_size(param);
+       path_ucs = (smb_ucs2_t *)&param[2];
+
+       if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
+               DATA_BLOB in_input_buffer;
+               DATA_BLOB in_output_buffer = data_blob_null;
+               DATA_BLOB out_input_buffer = data_blob_null;
+               DATA_BLOB out_output_buffer = data_blob_null;
+
+               in_input_buffer.data = param;
+               in_input_buffer.length = param_len;
+
+               status = smb2cli_ioctl(cli->conn,
+                                      cli->timeout,
+                                      cli->smb2.session,
+                                      cli->smb2.tcon,
+                                      UINT64_MAX, /* in_fid_persistent */
+                                      UINT64_MAX, /* in_fid_volatile */
+                                      FSCTL_DFS_GET_REFERRALS,
+                                      0, /* in_max_input_length */
+                                      &in_input_buffer,
+                                      CLI_BUFFER_SIZE, /* in_max_output_length */
+                                      &in_output_buffer,
+                                      SMB2_IOCTL_FLAG_IS_FSCTL,
+                                      talloc_tos(),
+                                      &out_input_buffer,
+                                      &out_output_buffer);
+               if (!NT_STATUS_IS_OK(status)) {
+                       goto out;
+               }
+
+               if (out_output_buffer.length < 4) {
+                       status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+                       goto out;
+               }
+
+               recv_flags2 = FLAGS2_UNICODE_STRINGS;
+               rdata = out_output_buffer.data;
+               endp = (char *)rdata + out_output_buffer.length;
+       } else {
+               unsigned int data_len = 0;
+               uint16_t setup[1];
+
+               SSVAL(setup, 0, TRANSACT2_GET_DFS_REFERRAL);
+
+               status = cli_trans(talloc_tos(), cli, SMBtrans2,
+                                  NULL, 0xffff, 0, 0,
+                                  setup, 1, 0,
+                                  param, param_len, 2,
+                                  NULL, 0, CLI_BUFFER_SIZE,
+                                  &recv_flags2,
+                                  NULL, 0, NULL, /* rsetup */
+                                  NULL, 0, NULL,
+                                  &rdata, 4, &data_len);
+               if (!NT_STATUS_IS_OK(status)) {
+                       goto out;
+               }
 
-       endp = (char *)rdata + data_len;
+               endp = (char *)rdata + data_len;
+       }
 
        consumed_ucs  = SVAL(rdata, 0);
        num_referrals = SVAL(rdata, 2);
@@ -651,6 +783,7 @@ NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
         * to get the number of bytes consumed from
         * the incoming path. */
 
+       errno = 0;
        if (pull_string_talloc(talloc_tos(),
                        NULL,
                        0,
@@ -658,23 +791,30 @@ NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
                        path_ucs,
                        consumed_ucs,
                        STR_UNICODE) == 0) {
+               if (errno != 0) {
+                       status = map_nt_error_from_unix(errno);
+               } else {
+                       status = NT_STATUS_INVALID_NETWORK_RESPONSE;
+               }
                goto out;
        }
        if (consumed_path == NULL) {
+               status = map_nt_error_from_unix(errno);
                goto out;
        }
        *consumed = strlen(consumed_path);
 
        if (num_referrals != 0) {
-               uint16 ref_version;
-               uint16 ref_size;
+               uint16_t ref_version;
+               uint16_t ref_size;
                int i;
-               uint16 node_offset;
+               uint16_t node_offset;
 
                referrals = talloc_array(ctx, struct client_dfs_referral,
                                         num_referrals);
 
                if (!referrals) {
+                       status = NT_STATUS_NO_MEMORY;
                        goto out;
                }
                /* start at the referrals array */
@@ -697,21 +837,25 @@ NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
                        referrals[i].ttl       = SVAL(p, 10);
 
                        if (p + node_offset > endp) {
+                               status = NT_STATUS_INVALID_NETWORK_RESPONSE;
                                goto out;
                        }
-                       clistr_pull_talloc(ctx, cli->inbuf,
-                                          SVAL(cli->inbuf, smb_flg2),
+                       clistr_pull_talloc(referrals,
+                                          (const char *)rdata,
+                                          recv_flags2,
                                           &referrals[i].dfspath,
                                           p+node_offset,
-                                          cli->bufsize - ((p+node_offset)-cli->inbuf),
+                                          PTR_DIFF(endp, p+node_offset),
                                           STR_TERMINATE|STR_UNICODE);
 
                        if (!referrals[i].dfspath) {
+                               status = map_nt_error_from_unix(errno);
                                goto out;
                        }
                        p += ref_size;
                }
                if (i < num_referrals) {
+                       status = NT_STATUS_INVALID_NETWORK_RESPONSE;
                        goto out;
                }
        }
@@ -721,22 +865,41 @@ NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
 
   out:
 
-       TALLOC_FREE(consumed_path);
-       SAFE_FREE(param);
-       TALLOC_FREE(rdata);
+       TALLOC_FREE(frame);
        return status;
 }
 
+NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
+                       struct cli_state *cli,
+                       const char *path,
+                       struct client_dfs_referral **refs,
+                       size_t *num_refs,
+                       size_t *consumed)
+{
+       return cli_dfs_get_referral_ex(ctx,
+                               cli,
+                               path,
+                               3,
+                               refs, /* Max referral level we want */
+                               num_refs,
+                               consumed);
+}
+
 /********************************************************************
 ********************************************************************/
-
-bool cli_resolve_path(TALLOC_CTX *ctx,
-                       const char *mountpt,
-                       const struct user_auth_info *dfs_auth_info,
-                       struct cli_state *rootcli,
-                       const char *path,
-                       struct cli_state **targetcli,
-                       char **pp_targetpath)
+struct cli_dfs_path_split {
+       char *server;
+       char *share;
+       char *extrapath;
+};
+
+NTSTATUS cli_resolve_path(TALLOC_CTX *ctx,
+                         const char *mountpt,
+                         const struct user_auth_info *dfs_auth_info,
+                         struct cli_state *rootcli,
+                         const char *path,
+                         struct cli_state **targetcli,
+                         char **pp_targetpath)
 {
        struct client_dfs_referral *refs = NULL;
        size_t num_refs = 0;
@@ -746,29 +909,45 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
        char *cleanpath = NULL;
        char *extrapath = NULL;
        int pathlen;
-       char *server = NULL;
-       char *share = NULL;
        struct cli_state *newcli = NULL;
+       struct cli_state *ccli = NULL;
+       int count = 0;
        char *newpath = NULL;
        char *newmount = NULL;
        char *ppath = NULL;
        SMB_STRUCT_STAT sbuf;
-       uint32 attributes;
+       uint32_t attributes;
        NTSTATUS status;
+       struct smbXcli_tcon *root_tcon = NULL;
+       struct smbXcli_tcon *target_tcon = NULL;
+       struct cli_dfs_path_split *dfs_refs = NULL;
 
        if ( !rootcli || !path || !targetcli ) {
-               return false;
+               return NT_STATUS_INVALID_PARAMETER;
        }
 
        /* Don't do anything if this is not a DFS root. */
 
-       if ( !rootcli->dfsroot) {
+       if (smbXcli_conn_protocol(rootcli->conn) >= PROTOCOL_SMB2_02) {
+               root_tcon = rootcli->smb2.tcon;
+       } else {
+               root_tcon = rootcli->smb1.tcon;
+       }
+
+       /*
+        * Avoid more than one leading directory separator
+        */
+       while (IS_DIRECTORY_SEP(path[0]) && IS_DIRECTORY_SEP(path[1])) {
+               path++;
+       }
+
+       if (!smbXcli_tcon_is_dfs_share(root_tcon)) {
                *targetcli = rootcli;
                *pp_targetpath = talloc_strdup(ctx, path);
                if (!*pp_targetpath) {
-                       return false;
+                       return NT_STATUS_NO_MEMORY;
                }
-               return true;
+               return NT_STATUS_OK;
        }
 
        *targetcli = NULL;
@@ -777,12 +956,12 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
 
        cleanpath = clean_path(ctx, path);
        if (!cleanpath) {
-               return false;
+               return NT_STATUS_NO_MEMORY;
        }
 
        dfs_path = cli_dfs_make_full_path(ctx, rootcli, cleanpath);
        if (!dfs_path) {
-               return false;
+               return NT_STATUS_NO_MEMORY;
        }
 
        status = cli_qpathinfo_basic( rootcli, dfs_path, &sbuf, &attributes);
@@ -791,7 +970,7 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
                *targetcli = rootcli;
                *pp_targetpath = talloc_strdup(ctx, path);
                if (!*pp_targetpath) {
-                       return false;
+                       return NT_STATUS_NO_MEMORY;
                }
                goto done;
        }
@@ -803,7 +982,7 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
                *targetcli = rootcli;
                *pp_targetpath = talloc_strdup(ctx, path);
                if (!*pp_targetpath) {
-                       return false;
+                       return NT_STATUS_NO_MEMORY;
                }
                goto done;
        }
@@ -812,51 +991,108 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
 
        if (!cli_dfs_check_error(rootcli, NT_STATUS_PATH_NOT_COVERED,
                                 status)) {
-               return false;
+               return status;
        }
 
        /* Check for the referral. */
 
-       if (!(cli_ipc = cli_cm_open(ctx,
-                               rootcli,
-                               rootcli->desthost,
-                               "IPC$",
-                               dfs_auth_info,
-                               false,
-                               (rootcli->trans_enc_state != NULL),
-                               rootcli->protocol,
-                               0,
-                               0x20))) {
-               return false;
+       status = cli_cm_open(ctx,
+                            rootcli,
+                            smbXcli_conn_remote_name(rootcli->conn),
+                            "IPC$",
+                            dfs_auth_info,
+                            cli_state_is_encryption_on(rootcli),
+                            smbXcli_conn_protocol(rootcli->conn),
+                            0,
+                            0x20,
+                            &cli_ipc);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
        status = cli_dfs_get_referral(ctx, cli_ipc, dfs_path, &refs,
                                      &num_refs, &consumed);
-       if (!NT_STATUS_IS_OK(status) || !num_refs) {
-               return false;
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
-       /* Just store the first referral for now. */
+       if (!num_refs || !refs[0].dfspath) {
+               return NT_STATUS_NOT_FOUND;
+       }
 
-       if (!refs[0].dfspath) {
-               return false;
+       /*
+        * Bug#10123 - DFS referal entries can be provided in a random order,
+        * so check the connection cache for each item to avoid unnecessary
+        * reconnections.
+        */
+       dfs_refs = talloc_array(ctx, struct cli_dfs_path_split, num_refs);
+       if (dfs_refs == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       for (count = 0; count < num_refs; count++) {
+               if (!split_dfs_path(dfs_refs, refs[count].dfspath,
+                                   &dfs_refs[count].server,
+                                   &dfs_refs[count].share,
+                                   &dfs_refs[count].extrapath)) {
+                       TALLOC_FREE(dfs_refs);
+                       return NT_STATUS_NOT_FOUND;
+               }
+
+               ccli = cli_cm_find(rootcli, dfs_refs[count].server,
+                                  dfs_refs[count].share);
+               if (ccli != NULL) {
+                       extrapath = dfs_refs[count].extrapath;
+                       *targetcli = ccli;
+                       break;
+               }
        }
-       if (!split_dfs_path(ctx, refs[0].dfspath, &server, &share,
-                           &extrapath)) {
-               return false;
+
+       /*
+        * If no cached connection was found, then connect to the first live
+        * referral server in the list.
+        */
+       for (count = 0; (ccli == NULL) && (count < num_refs); count++) {
+               /* Connect to the target server & share */
+               status = cli_cm_connect(ctx, rootcli,
+                               dfs_refs[count].server,
+                               dfs_refs[count].share,
+                               dfs_auth_info,
+                               cli_state_is_encryption_on(rootcli),
+                               smbXcli_conn_protocol(rootcli->conn),
+                               0,
+                               0x20,
+                               targetcli);
+               if (!NT_STATUS_IS_OK(status)) {
+                       d_printf("Unable to follow dfs referral [\\%s\\%s]\n",
+                                dfs_refs[count].server,
+                                dfs_refs[count].share);
+                       continue;
+               } else {
+                       extrapath = dfs_refs[count].extrapath;
+                       break;
+               }
+       }
+
+       /* No available referral server for the connection */
+       if (*targetcli == NULL) {
+               TALLOC_FREE(dfs_refs);
+               return status;
        }
 
        /* Make sure to recreate the original string including any wildcards. */
 
        dfs_path = cli_dfs_make_full_path(ctx, rootcli, path);
        if (!dfs_path) {
-               return false;
+               TALLOC_FREE(dfs_refs);
+               return NT_STATUS_NO_MEMORY;
        }
        pathlen = strlen(dfs_path);
        consumed = MIN(pathlen, consumed);
        *pp_targetpath = talloc_strdup(ctx, &dfs_path[consumed]);
        if (!*pp_targetpath) {
-               return false;
+               TALLOC_FREE(dfs_refs);
+               return NT_STATUS_NO_MEMORY;
        }
        dfs_path[consumed] = '\0';
 
@@ -866,21 +1102,6 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
         * (in \server\share\path format).
         */
 
-       /* Open the connection to the target server & share */
-       if ((*targetcli = cli_cm_open(ctx, rootcli,
-                                       server,
-                                       share,
-                                       dfs_auth_info,
-                                       false,
-                                       (rootcli->trans_enc_state != NULL),
-                                       rootcli->protocol,
-                                       0,
-                                       0x20)) == NULL) {
-               d_printf("Unable to follow dfs referral [\\%s\\%s]\n",
-                       server, share );
-               return false;
-       }
-
        if (extrapath && strlen(extrapath) > 0) {
                /* EMC Celerra NAS version 5.6.50 (at least) doesn't appear to */
                /* put the trailing \ on the path, so to be save we put one in if needed */
@@ -896,7 +1117,8 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
                                                  *pp_targetpath);
                }
                if (!*pp_targetpath) {
-                       return false;
+                       TALLOC_FREE(dfs_refs);
+                       return NT_STATUS_NO_MEMORY;
                }
        }
 
@@ -909,26 +1131,30 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
                d_printf("cli_resolve_path: "
                        "dfs_path (%s) not in correct format.\n",
                        dfs_path );
-               return false;
+               TALLOC_FREE(dfs_refs);
+               return NT_STATUS_NOT_FOUND;
        }
 
        ppath++; /* Now pointing at start of server name. */
 
        if ((ppath = strchr_m( dfs_path, '\\' )) == NULL) {
-               return false;
+               TALLOC_FREE(dfs_refs);
+               return NT_STATUS_NOT_FOUND;
        }
 
        ppath++; /* Now pointing at start of share name. */
 
        if ((ppath = strchr_m( ppath+1, '\\' )) == NULL) {
-               return false;
+               TALLOC_FREE(dfs_refs);
+               return NT_STATUS_NOT_FOUND;
        }
 
        ppath++; /* Now pointing at path component. */
 
        newmount = talloc_asprintf(ctx, "%s\\%s", mountpt, ppath );
        if (!newmount) {
-               return false;
+               TALLOC_FREE(dfs_refs);
+               return NT_STATUS_NOT_FOUND;
        }
 
        cli_set_mntpoint(*targetcli, newmount);
@@ -937,13 +1163,14 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
           checking for loops here. */
 
        if (!strequal(*pp_targetpath, "\\") && !strequal(*pp_targetpath, "/")) {
-               if (cli_resolve_path(ctx,
-                                       newmount,
-                                       dfs_auth_info,
-                                       *targetcli,
-                                       *pp_targetpath,
-                                       &newcli,
-                                       &newpath)) {
+               status = cli_resolve_path(ctx,
+                                         newmount,
+                                         dfs_auth_info,
+                                         *targetcli,
+                                         *pp_targetpath,
+                                         &newcli,
+                                         &newpath);
+               if (NT_STATUS_IS_OK(status)) {
                        /*
                         * When cli_resolve_path returns true here it's always
                         * returning the complete path in newpath, so we're done
@@ -951,22 +1178,35 @@ bool cli_resolve_path(TALLOC_CTX *ctx,
                         */
                        *targetcli = newcli;
                        *pp_targetpath = newpath;
-                       return true;
+                       TALLOC_FREE(dfs_refs);
+                       return status;
                }
        }
 
   done:
 
+       if (smbXcli_conn_protocol((*targetcli)->conn) >= PROTOCOL_SMB2_02) {
+               target_tcon = (*targetcli)->smb2.tcon;
+       } else {
+               target_tcon = (*targetcli)->smb1.tcon;
+       }
+
        /* If returning true ensure we return a dfs root full path. */
-       if ((*targetcli)->dfsroot) {
+       if (smbXcli_tcon_is_dfs_share(target_tcon)) {
                dfs_path = talloc_strdup(ctx, *pp_targetpath);
                if (!dfs_path) {
-                       return false;
+                       TALLOC_FREE(dfs_refs);
+                       return NT_STATUS_NO_MEMORY;
                }
                *pp_targetpath = cli_dfs_make_full_path(ctx, *targetcli, dfs_path);
+               if (*pp_targetpath == NULL) {
+                       TALLOC_FREE(dfs_refs);
+                       return NT_STATUS_NO_MEMORY;
+               }
        }
 
-       return true;
+       TALLOC_FREE(dfs_refs);
+       return NT_STATUS_OK;
 }
 
 /********************************************************************
@@ -978,24 +1218,23 @@ bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
                                char **pp_newserver,
                                char **pp_newshare,
                                bool force_encrypt,
-                               const char *username,
-                               const char *password,
-                               const char *domain)
+                               struct cli_credentials *creds)
 {
        struct client_dfs_referral *refs = NULL;
        size_t num_refs = 0;
        size_t consumed = 0;
        char *fullpath = NULL;
        bool res;
-       uint16 cnum;
+       struct smbXcli_tcon *orig_tcon = NULL;
        char *newextrapath = NULL;
        NTSTATUS status;
+       const char *remote_name;
 
        if (!cli || !sharename) {
                return false;
        }
 
-       cnum = cli->cnum;
+       remote_name = smbXcli_conn_remote_name(cli->conn);
 
        /* special case.  never check for a referral on the IPC$ share */
 
@@ -1005,24 +1244,30 @@ bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
 
        /* send a trans2_query_path_info to check for a referral */
 
-       fullpath = talloc_asprintf(ctx, "\\%s\\%s", cli->desthost, sharename );
+       fullpath = talloc_asprintf(ctx, "\\%s\\%s", remote_name, sharename);
        if (!fullpath) {
                return false;
        }
 
+       /* Store tcon state. */
+       if (cli_state_has_tcon(cli)) {
+               orig_tcon = cli_state_save_tcon(cli);
+               if (orig_tcon == NULL) {
+                       return false;
+               }
+       }
+
        /* check for the referral */
 
-       if (!NT_STATUS_IS_OK(cli_tcon_andx(cli, "IPC$", "IPC", NULL, 0))) {
+       if (!NT_STATUS_IS_OK(cli_tree_connect(cli, "IPC$", "IPC", NULL))) {
+               cli_state_restore_tcon(cli, orig_tcon);
                return false;
        }
 
        if (force_encrypt) {
-               status = cli_cm_force_encryption(cli,
-                                       username,
-                                       password,
-                                       lp_workgroup(),
-                                       "IPC$");
+               status = cli_cm_force_encryption_creds(cli, creds, "IPC$");
                if (!NT_STATUS_IS_OK(status)) {
+                       cli_state_restore_tcon(cli, orig_tcon);
                        return false;
                }
        }
@@ -1032,12 +1277,13 @@ bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
        res = NT_STATUS_IS_OK(status);
 
        status = cli_tdis(cli);
+
+       cli_state_restore_tcon(cli, orig_tcon);
+
        if (!NT_STATUS_IS_OK(status)) {
                return false;
        }
 
-       cli->cnum = cnum;
-
        if (!res || !num_refs) {
                return false;
        }
@@ -1053,7 +1299,7 @@ bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
 
        /* check that this is not a self-referral */
 
-       if (strequal(cli->desthost, *pp_newserver) &&
+       if (strequal(remote_name, *pp_newserver) &&
                        strequal(sharename, *pp_newshare)) {
                return false;
        }