s3:libsmb: change the connect banner to "Server=[%s] Protocol=[%s]"
[metze/samba/wip.git] / source3 / libsmb / clidfs.c
index b44bbef3c2cdc4363ce5748709a90fd3e16e9bbb..2e9107866cbe953e97a9e2bdba368b50efea2646 100644 (file)
@@ -26,6 +26,7 @@
 #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)
 {
+       uint16_t major, minor;
+       uint32_t caplow, caphigh;
        NTSTATUS status;
 
        if (smbXcli_conn_protocol(c->conn) >= PROTOCOL_SMB2_02) {
@@ -64,29 +65,65 @@ NTSTATUS cli_cm_force_encryption(struct cli_state *c,
                return status;
        }
 
-       status = cli_force_encryption(c,
-                                       username,
-                                       password,
-                                       domain);
-
-       if (NT_STATUS_EQUAL(status,NT_STATUS_NOT_SUPPORTED)) {
+       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;
 }
 
@@ -96,6 +133,7 @@ NTSTATUS cli_cm_force_encryption(struct cli_state *c,
 
 static NTSTATUS do_connect(TALLOC_CTX *ctx,
                                        const char *server,
+                                       const struct sockaddr_storage *dest_ss,
                                        const char *share,
                                        const struct user_auth_info *auth_info,
                                        bool show_sessetup,
@@ -109,12 +147,11 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
        char *servicename;
        char *sharename;
        char *newserver, *newshare;
-       const char *username;
-       const char *password;
-       const char *domain;
        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;
@@ -156,19 +193,23 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
        }
 
        status = cli_connect_nb(
-               server, NULL, port, name_type, NULL,
+               server, dest_ss, port, name_type, NULL,
                signing_state,
                flags, &c);
 
        if (!NT_STATUS_IS_OK(status)) {
-               d_printf("Connection to %s failed (Error %s)\n",
-                               server,
-                               nt_errstr(status));
+               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;
        }
        DEBUG(4,(" session request ok\n"));
 
@@ -182,27 +223,25 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
                cli_shutdown(c);
                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 (smbXcli_conn_protocol(c->conn) >= PROTOCOL_SMB2_02) {
+       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);
-       domain = get_cmdline_auth_info_domain(auth_info);
-       if ((domain == NULL) || (domain[0] == '\0')) {
-               domain = lp_workgroup();
-       }
+       creds = get_cmdline_auth_info_creds(auth_info);
 
-       status = cli_session_setup(c, username,
-                                  password,
-                                  domain);
+       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) ||
+               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",
@@ -223,13 +262,16 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
        }
 
        if ( show_sessetup ) {
-               if (*c->server_domain) {
-                       DEBUG(0,("Domain=[%s] OS=[%s] Server=[%s]\n",
-                               c->server_domain,c->server_os,c->server_type));
-               } else if (*c->server_os || *c->server_type) {
-                       DEBUG(0,("OS=[%s] Server=[%s]\n",
-                                c->server_os,c->server_type));
-               }
+               const char *server_name = NULL;
+               enum protocol_types protocol;
+               const char *protocol_name = NULL;
+
+               server_name = smbXcli_conn_remote_name(c->conn);
+               protocol = smbXcli_conn_protocol(c->conn);
+               protocol_name = smb_protocol_types_string(protocol);
+
+               DEBUG(0,("Server=[%s] Protocol=[%s]\n",
+                        server_name, protocol_name));
        }
        DEBUG(4,(" session setup ok\n"));
 
@@ -241,12 +283,9 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
        if (smbXcli_conn_dfs_supported(c->conn) &&
                        cli_check_msdfs_proxy(ctx, c, sharename,
                                &newserver, &newshare,
-                               force_encrypt,
-                               username,
-                               password,
-                               domain)) {
+                               force_encrypt, creds)) {
                cli_shutdown(c);
-               return do_connect(ctx, newserver,
+               return do_connect(ctx, newserver, NULL,
                                newshare, auth_info, false,
                                force_encrypt, max_protocol,
                                port, name_type, pcli);
@@ -254,7 +293,7 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
 
        /* must be a normal share */
 
-       status = cli_tree_connect(c, sharename, "?????", password);
+       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);
@@ -262,11 +301,9 @@ static NTSTATUS do_connect(TALLOC_CTX *ctx,
        }
 
        if (force_encrypt) {
-               status = cli_cm_force_encryption(c,
-                                       username,
-                                       password,
-                                       domain,
-                                       sharename);
+               status = cli_cm_force_encryption_creds(c,
+                                                      creds,
+                                                      sharename);
                if (!NT_STATUS_IS_OK(status)) {
                        cli_shutdown(c);
                        return status;
@@ -302,9 +339,9 @@ static void cli_set_mntpoint(struct cli_state *cli, const char *mnt)
 static NTSTATUS cli_cm_connect(TALLOC_CTX *ctx,
                               struct cli_state *referring_cli,
                               const char *server,
+                              const struct sockaddr_storage *dest_ss,
                               const char *share,
                               const struct user_auth_info *auth_info,
-                              bool show_hdr,
                               bool force_encrypt,
                               int max_protocol,
                               int port,
@@ -314,7 +351,7 @@ static NTSTATUS cli_cm_connect(TALLOC_CTX *ctx,
        struct cli_state *cli;
        NTSTATUS status;
 
-       status = do_connect(ctx, server, share,
+       status = do_connect(ctx, server, dest_ss, share,
                                auth_info,
                                show_hdr, force_encrypt, max_protocol,
                                port, name_type, &cli);
@@ -390,9 +427,9 @@ static struct cli_state *cli_cm_find(struct cli_state *cli,
 NTSTATUS cli_cm_open(TALLOC_CTX *ctx,
                                struct cli_state *referring_cli,
                                const char *server,
+                               const struct sockaddr_storage *dest_ss,
                                const char *share,
                                const struct user_auth_info *auth_info,
-                               bool show_hdr,
                                bool force_encrypt,
                                int max_protocol,
                                int port,
@@ -420,9 +457,9 @@ NTSTATUS cli_cm_open(TALLOC_CTX *ctx,
        status = cli_cm_connect(ctx,
                                referring_cli,
                                server,
+                               dest_ss,
                                share,
                                auth_info,
-                               show_hdr,
                                force_encrypt,
                                max_protocol,
                                port,
@@ -643,9 +680,10 @@ 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)
@@ -672,7 +710,7 @@ NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
                status = NT_STATUS_NO_MEMORY;
                goto out;
        }
-       SSVAL(param, 0, 0x03);  /* max referral level */
+       SSVAL(param, 0, max_referral_level);
 
        param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
                                      path, strlen(path)+1,
@@ -838,6 +876,22 @@ NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
        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);
+}
+
 /********************************************************************
 ********************************************************************/
 struct cli_dfs_path_split {
@@ -871,6 +925,8 @@ NTSTATUS cli_resolve_path(TALLOC_CTX *ctx,
        SMB_STRUCT_STAT sbuf;
        uint32_t attributes;
        NTSTATUS status;
+       struct cli_credentials *dfs_creds = NULL;
+       bool force_encryption = true;
        struct smbXcli_tcon *root_tcon = NULL;
        struct smbXcli_tcon *target_tcon = NULL;
        struct cli_dfs_path_split *dfs_refs = NULL;
@@ -883,8 +939,17 @@ NTSTATUS cli_resolve_path(TALLOC_CTX *ctx,
 
        if (smbXcli_conn_protocol(rootcli->conn) >= PROTOCOL_SMB2_02) {
                root_tcon = rootcli->smb2.tcon;
+               force_encryption = smb2cli_tcon_is_encryption_on(root_tcon);
        } else {
                root_tcon = rootcli->smb1.tcon;
+               force_encryption = smb1cli_conn_encryption_on(rootcli->conn);
+       }
+
+       /*
+        * 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)) {
@@ -942,21 +1007,30 @@ NTSTATUS cli_resolve_path(TALLOC_CTX *ctx,
 
        /* Check for the referral. */
 
-       status = cli_cm_open(ctx,
-                            rootcli,
-                            smbXcli_conn_remote_name(rootcli->conn),
-                            "IPC$",
-                            dfs_auth_info,
-                            false,
-                            smb1cli_conn_encryption_on(rootcli->conn),
-                            smbXcli_conn_protocol(rootcli->conn),
-                            0,
-                            0x20,
-                            &cli_ipc);
+       cli_ipc = cli_state_dup(ctx, rootcli);
+       if (cli_ipc == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       dfs_creds = get_cmdline_auth_info_creds(auth_info);
+
+       status = cli_tree_connect_creds(cli_ipc, "IPC$", "IPC", dfs_creds);
        if (!NT_STATUS_IS_OK(status)) {
+               d_printf("tree connect failed: %s\n", nt_errstr(status));
+               cli_shutdown(cli_ipc);
                return status;
        }
 
+       if (force_encrypt) {
+               status = cli_cm_force_encryption_creds(cli_ipc,
+                                                      dfs_creds,
+                                                      "IPC$");
+               if (!NT_STATUS_IS_OK(status)) {
+                       cli_shutdown(cli_ipc);
+                       return status;
+               }
+       }
+
        status = cli_dfs_get_referral(ctx, cli_ipc, dfs_path, &refs,
                                      &num_refs, &consumed);
        if (!NT_STATUS_IS_OK(status)) {
@@ -1003,10 +1077,10 @@ NTSTATUS cli_resolve_path(TALLOC_CTX *ctx,
                /* Connect to the target server & share */
                status = cli_cm_connect(ctx, rootcli,
                                dfs_refs[count].server,
+                               NULL,
                                dfs_refs[count].share,
                                dfs_auth_info,
-                               false,
-                               smb1cli_conn_encryption_on(rootcli->conn),
+                               cli_state_is_encryption_on(rootcli),
                                smbXcli_conn_protocol(rootcli->conn),
                                0,
                                0x20,
@@ -1166,16 +1240,14 @@ 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_t cnum;
+       struct smbXcli_tcon *orig_tcon = NULL;
        char *newextrapath = NULL;
        NTSTATUS status;
        const char *remote_name;
@@ -1185,7 +1257,6 @@ bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
        }
 
        remote_name = smbXcli_conn_remote_name(cli->conn);
-       cnum = cli_state_get_tid(cli);
 
        /* special case.  never check for a referral on the IPC$ share */
 
@@ -1200,19 +1271,25 @@ bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
                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_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,
-                                       domain,
-                                       "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;
                }
        }
@@ -1222,12 +1299,13 @@ 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_state_set_tid(cli, cnum);
-
        if (!res || !num_refs) {
                return false;
        }