s3/rpc_client: make map_validation_to_info3() public and move to util_netlogon
[metze/samba/wip.git] / source3 / rpc_client / cli_netlogon.c
index ced83da9d775357310376a130511c1d97b9ef5f2..67c87354e694f3a549b9578ca3fd618dff766090 100644 (file)
@@ -86,14 +86,15 @@ NTSTATUS rpccli_pre_open_netlogon_creds(void)
        return NT_STATUS_OK;
 }
 
-NTSTATUS rpccli_create_netlogon_creds(const char *server_computer,
-                                     const char *server_netbios_domain,
-                                     const char *server_dns_domain,
-                                     const char *client_account,
-                                     enum netr_SchannelType sec_chan_type,
-                                     struct messaging_context *msg_ctx,
-                                     TALLOC_CTX *mem_ctx,
-                                     struct netlogon_creds_cli_context **netlogon_creds)
+static NTSTATUS rpccli_create_netlogon_creds(
+       const char *server_computer,
+       const char *server_netbios_domain,
+       const char *server_dns_domain,
+       const char *client_account,
+       enum netr_SchannelType sec_chan_type,
+       struct messaging_context *msg_ctx,
+       TALLOC_CTX *mem_ctx,
+       struct netlogon_creds_cli_context **netlogon_creds)
 {
        TALLOC_CTX *frame = talloc_stackframe();
        struct loadparm_context *lp_ctx;
@@ -126,11 +127,12 @@ NTSTATUS rpccli_create_netlogon_creds(const char *server_computer,
        return NT_STATUS_OK;
 }
 
-NTSTATUS rpccli_create_netlogon_creds_with_creds(struct cli_credentials *creds,
-                                                const char *server_computer,
-                                                struct messaging_context *msg_ctx,
-                                                TALLOC_CTX *mem_ctx,
-                                                struct netlogon_creds_cli_context **netlogon_creds)
+NTSTATUS rpccli_create_netlogon_creds_ctx(
+       struct cli_credentials *creds,
+       const char *server_computer,
+       struct messaging_context *msg_ctx,
+       TALLOC_CTX *mem_ctx,
+       struct netlogon_creds_cli_context **creds_ctx)
 {
        enum netr_SchannelType sec_chan_type;
        const char *server_netbios_domain;
@@ -138,10 +140,6 @@ NTSTATUS rpccli_create_netlogon_creds_with_creds(struct cli_credentials *creds,
        const char *client_account;
 
        sec_chan_type = cli_credentials_get_secure_channel_type(creds);
-       if (sec_chan_type == SEC_CHAN_NULL) {
-               return NT_STATUS_INVALID_PARAMETER_MIX;
-       }
-
        client_account = cli_credentials_get_username(creds);
        server_netbios_domain = cli_credentials_get_domain(creds);
        server_dns_domain = cli_credentials_get_realm(creds);
@@ -152,15 +150,16 @@ NTSTATUS rpccli_create_netlogon_creds_with_creds(struct cli_credentials *creds,
                                            client_account,
                                            sec_chan_type,
                                            msg_ctx, mem_ctx,
-                                           netlogon_creds);
+                                           creds_ctx);
 }
 
-NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
-                                    enum dcerpc_transport_t transport,
-                                    struct netlogon_creds_cli_context *netlogon_creds,
-                                    bool force_reauth,
-                                    struct samr_Password current_nt_hash,
-                                    const struct samr_Password *previous_nt_hash)
+NTSTATUS rpccli_setup_netlogon_creds_locked(
+       struct cli_state *cli,
+       enum dcerpc_transport_t transport,
+       struct netlogon_creds_cli_context *creds_ctx,
+       bool force_reauth,
+       struct cli_credentials *cli_creds,
+       uint32_t *negotiate_flags)
 {
        TALLOC_CTX *frame = talloc_stackframe();
        struct rpc_pipe_client *netlogon_pipe = NULL;
@@ -170,8 +169,7 @@ NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
        uint8_t idx_nt_hashes = 0;
        NTSTATUS status;
 
-       status = netlogon_creds_cli_get(netlogon_creds,
-                                       frame, &creds);
+       status = netlogon_creds_cli_get(creds_ctx, frame, &creds);
        if (NT_STATUS_IS_OK(status)) {
                const char *action = "using";
 
@@ -184,12 +182,24 @@ NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
                         creds->account_name, creds->computer_name,
                         smbXcli_conn_remote_name(cli->conn)));
                if (!force_reauth) {
-                       TALLOC_FREE(frame);
-                       return NT_STATUS_OK;
+                       goto done;
                }
                TALLOC_FREE(creds);
        }
 
+       nt_hashes[0] = cli_credentials_get_nt_hash(cli_creds, talloc_tos());
+       if (nt_hashes[0] == NULL) {
+               TALLOC_FREE(frame);
+               return NT_STATUS_NO_MEMORY;
+       }
+       num_nt_hashes = 1;
+
+       nt_hashes[1] = cli_credentials_get_old_nt_hash(cli_creds,
+                                                      talloc_tos());
+       if (nt_hashes[1] != NULL) {
+               num_nt_hashes = 2;
+       }
+
        status = cli_rpc_pipe_open_noauth_transport(cli,
                                                    transport,
                                                    &ndr_table_netlogon,
@@ -204,14 +214,7 @@ NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
        }
        talloc_steal(frame, netlogon_pipe);
 
-       nt_hashes[0] = &current_nt_hash;
-       num_nt_hashes = 1;
-       if (previous_nt_hash != NULL) {
-               nt_hashes[1] = previous_nt_hash;
-               num_nt_hashes = 2;
-       }
-
-       status = netlogon_creds_cli_auth(netlogon_creds,
+       status = netlogon_creds_cli_auth(creds_ctx,
                                         netlogon_pipe->binding_handle,
                                         num_nt_hashes,
                                         nt_hashes,
@@ -221,8 +224,7 @@ NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
                return status;
        }
 
-       status = netlogon_creds_cli_get(netlogon_creds,
-                                       frame, &creds);
+       status = netlogon_creds_cli_get(creds_ctx, frame, &creds);
        if (!NT_STATUS_IS_OK(status)) {
                TALLOC_FREE(frame);
                return NT_STATUS_INTERNAL_ERROR;
@@ -233,102 +235,233 @@ NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
                 creds->account_name, creds->computer_name,
                 smbXcli_conn_remote_name(cli->conn)));
 
+done:
+       if (negotiate_flags != NULL) {
+               *negotiate_flags = creds->negotiate_flags;
+       }
+
        TALLOC_FREE(frame);
        return NT_STATUS_OK;
 }
 
-NTSTATUS rpccli_setup_netlogon_creds_with_creds(struct cli_state *cli,
-                                               enum dcerpc_transport_t transport,
-                                               struct netlogon_creds_cli_context *netlogon_creds,
-                                               bool force_reauth,
-                                               struct cli_credentials *creds)
+NTSTATUS rpccli_setup_netlogon_creds(
+       struct cli_state *cli,
+       enum dcerpc_transport_t transport,
+       struct netlogon_creds_cli_context *creds_ctx,
+       bool force_reauth,
+       struct cli_credentials *cli_creds)
 {
-       struct samr_Password *current_nt_hash = NULL;
-       struct samr_Password *previous_nt_hash = NULL;
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct netlogon_creds_cli_lck *lck;
        NTSTATUS status;
 
-       current_nt_hash = cli_credentials_get_nt_hash(creds, talloc_tos());
-       if (current_nt_hash == NULL) {
-               return NT_STATUS_NO_MEMORY;
-       }
-
-       previous_nt_hash = cli_credentials_get_old_nt_hash(creds, talloc_tos());
-
-       status = rpccli_setup_netlogon_creds(cli, transport,
-                                            netlogon_creds,
-                                            force_reauth,
-                                            *current_nt_hash,
-                                            previous_nt_hash);
-       TALLOC_FREE(current_nt_hash);
-       TALLOC_FREE(previous_nt_hash);
+       status = netlogon_creds_cli_lck(
+               creds_ctx, NETLOGON_CREDS_CLI_LCK_EXCLUSIVE,
+               frame, &lck);
        if (!NT_STATUS_IS_OK(status)) {
+               DBG_WARNING("netlogon_creds_cli_lck failed: %s\n",
+                           nt_errstr(status));
+               TALLOC_FREE(frame);
                return status;
        }
 
-       return NT_STATUS_OK;
+       status = rpccli_setup_netlogon_creds_locked(
+               cli, transport, creds_ctx, force_reauth, cli_creds, NULL);
+
+       TALLOC_FREE(frame);
+
+       return status;
 }
 
-static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
-                                       uint16_t validation_level,
-                                       union netr_Validation *validation,
-                                       struct netr_SamInfo3 **info3_p)
+NTSTATUS rpccli_connect_netlogon(
+       struct cli_state *cli,
+       enum dcerpc_transport_t transport,
+       struct netlogon_creds_cli_context *creds_ctx,
+       bool force_reauth,
+       struct cli_credentials *trust_creds,
+       struct rpc_pipe_client **_rpccli)
 {
-       struct netr_SamInfo3 *info3;
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct netlogon_creds_CredentialState *creds = NULL;
+       enum netlogon_creds_cli_lck_type lck_type;
+       enum netr_SchannelType sec_chan_type;
+       struct netlogon_creds_cli_lck *lck = NULL;
+       uint32_t negotiate_flags;
+       uint8_t found_session_key[16] = {0};
+       bool found_existing_creds = false;
+       bool do_serverauth;
+       struct rpc_pipe_client *rpccli;
        NTSTATUS status;
+       bool retry = false;
 
-       if (validation == NULL) {
-               return NT_STATUS_INVALID_PARAMETER;
+       sec_chan_type = cli_credentials_get_secure_channel_type(trust_creds);
+       if (sec_chan_type == SEC_CHAN_NULL) {
+               DBG_ERR("secure_channel_type gave SEC_CHAN_NULL\n");
+               status = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+               goto fail;
        }
 
-       switch (validation_level) {
-       case 3:
-               if (validation->sam3 == NULL) {
-                       return NT_STATUS_INVALID_PARAMETER;
+again:
+
+       /*
+        * See whether we can use existing netlogon_creds or
+        * whether we have to serverauthenticate.
+        */
+       status = netlogon_creds_cli_get(creds_ctx, frame, &creds);
+
+       if (NT_STATUS_IS_OK(status)) {
+               int cmp = memcmp(found_session_key,
+                                creds->session_key,
+                                sizeof(found_session_key));
+               found_existing_creds = (cmp != 0);
+
+               memcpy(found_session_key,
+                      creds->session_key,
+                      sizeof(found_session_key));
+
+               TALLOC_FREE(creds);
+       }
+
+       lck_type = (force_reauth || !found_existing_creds) ?
+               NETLOGON_CREDS_CLI_LCK_EXCLUSIVE :
+               NETLOGON_CREDS_CLI_LCK_SHARED;
+
+       status = netlogon_creds_cli_lck(creds_ctx, lck_type, frame, &lck);
+       if (!NT_STATUS_IS_OK(status)) {
+               DBG_DEBUG("netlogon_creds_cli_lck failed: %s\n",
+                         nt_errstr(status));
+               goto fail;
+       }
+
+       if (!found_existing_creds) {
+               /*
+                * Try to find creds under the lock again. Someone
+                * else might have done it for us.
+                */
+               status = netlogon_creds_cli_get(creds_ctx, frame, &creds);
+
+               if (NT_STATUS_IS_OK(status)) {
+                       int cmp = memcmp(found_session_key,
+                                        creds->session_key,
+                                        sizeof(found_session_key));
+                       found_existing_creds = (cmp != 0);
+
+                       memcpy(found_session_key, creds->session_key,
+                              sizeof(found_session_key));
+
+                       TALLOC_FREE(creds);
                }
+       }
 
-               info3 = talloc_move(mem_ctx, &validation->sam3);
-               break;
-       case 6:
-               if (validation->sam6 == NULL) {
-                       return NT_STATUS_INVALID_PARAMETER;
+       do_serverauth = force_reauth || !found_existing_creds;
+
+       if (!do_serverauth) {
+               /*
+                * Do the quick schannel bind without a reauth
+                */
+               status = cli_rpc_pipe_open_bind_schannel(
+                       cli, &ndr_table_netlogon, transport, creds_ctx,
+                       &rpccli);
+               if (!retry && NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_ACCESS_DENIED)) {
+                       DBG_DEBUG("Retrying with serverauthenticate\n");
+                       TALLOC_FREE(lck);
+                       retry = true;
+                       goto again;
                }
+               if (!NT_STATUS_IS_OK(status)) {
+                       DBG_DEBUG("cli_rpc_pipe_open_bind_schannel "
+                                 "failed: %s\n", nt_errstr(status));
+                       goto fail;
+               }
+               goto done;
+       }
 
-               info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
-               if (info3 == NULL) {
-                       return NT_STATUS_NO_MEMORY;
+       if (cli_credentials_is_anonymous(trust_creds)) {
+               DBG_WARNING("get_trust_credential for %s only gave anonymous,"
+                           "unable to negotiate NETLOGON credentials\n",
+                           netlogon_creds_cli_debug_string(
+                                   creds_ctx, frame));
+               status = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+               goto fail;
+       }
+
+       status = rpccli_setup_netlogon_creds_locked(
+               cli, transport, creds_ctx, true, trust_creds,
+               &negotiate_flags);
+       if (!NT_STATUS_IS_OK(status)) {
+               DBG_DEBUG("rpccli_setup_netlogon_creds failed for %s, "
+                         "unable to setup NETLOGON credentials: %s\n",
+                         netlogon_creds_cli_debug_string(
+                                 creds_ctx, frame),
+                         nt_errstr(status));
+               goto fail;
+       }
+
+       if (!(negotiate_flags & NETLOGON_NEG_AUTHENTICATED_RPC)) {
+               if (lp_winbind_sealed_pipes() || lp_require_strong_key()) {
+                       status = NT_STATUS_DOWNGRADE_DETECTED;
+                       DBG_WARNING("Unwilling to make connection to %s"
+                                   "without connection level security, "
+                                   "must set 'winbind sealed pipes = false'"
+                                   " and 'require strong key = false' "
+                                   "to proceed: %s\n",
+                                   netlogon_creds_cli_debug_string(
+                                           creds_ctx, frame),
+                                   nt_errstr(status));
+                       goto fail;
                }
-               status = copy_netr_SamBaseInfo(info3, &validation->sam6->base, &info3->base);
+
+               status = cli_rpc_pipe_open_noauth_transport(
+                       cli, transport, &ndr_table_netlogon, &rpccli);
                if (!NT_STATUS_IS_OK(status)) {
-                       TALLOC_FREE(info3);
-                       return status;
+                       DBG_DEBUG("cli_rpc_pipe_open_noauth_transport "
+                                 "failed: %s\n", nt_errstr(status));
+                       goto fail;
                }
+               goto done;
+       }
 
-               info3->sidcount = validation->sam6->sidcount;
-               info3->sids = talloc_move(info3, &validation->sam6->sids);
-               break;
-       default:
-               return NT_STATUS_BAD_VALIDATION_CLASS;
+       status = cli_rpc_pipe_open_bind_schannel(
+               cli, &ndr_table_netlogon, transport, creds_ctx, &rpccli);
+       if (!NT_STATUS_IS_OK(status)) {
+               DBG_DEBUG("cli_rpc_pipe_open_bind_schannel "
+                         "failed: %s\n", nt_errstr(status));
+               goto fail;
        }
 
-       *info3_p = info3;
+       status = netlogon_creds_cli_check(creds_ctx, rpccli->binding_handle,
+                                         NULL);
+       if (!NT_STATUS_IS_OK(status)) {
+               DBG_WARNING("netlogon_creds_cli_check failed: %s\n",
+                           nt_errstr(status));
+               goto fail;
+       }
 
-       return NT_STATUS_OK;
+done:
+       *_rpccli = rpccli;
+       status = NT_STATUS_OK;
+fail:
+       ZERO_STRUCT(found_session_key);
+       TALLOC_FREE(lck);
+       TALLOC_FREE(frame);
+       return status;
 }
 
 /* Logon domain user */
 
-NTSTATUS rpccli_netlogon_password_logon(struct netlogon_creds_cli_context *creds,
-                                       struct dcerpc_binding_handle *binding_handle,
-                                       TALLOC_CTX *mem_ctx,
-                                       uint32_t logon_parameters,
-                                       const char *domain,
-                                       const char *username,
-                                       const char *password,
-                                       const char *workstation,
-                                       enum netr_LogonInfoClass logon_type,
-                                       uint8_t *authoritative,
-                                       uint32_t *flags,
-                                       struct netr_SamInfo3 **info3)
+NTSTATUS rpccli_netlogon_password_logon(
+       struct netlogon_creds_cli_context *creds_ctx,
+       struct dcerpc_binding_handle *binding_handle,
+       TALLOC_CTX *mem_ctx,
+       uint32_t logon_parameters,
+       const char *domain,
+       const char *username,
+       const char *password,
+       const char *workstation,
+       enum netr_LogonInfoClass logon_type,
+       uint8_t *authoritative,
+       uint32_t *flags,
+       struct netr_SamInfo3 **info3)
 {
        TALLOC_CTX *frame = talloc_stackframe();
        NTSTATUS status;
@@ -435,7 +568,7 @@ NTSTATUS rpccli_netlogon_password_logon(struct netlogon_creds_cli_context *creds
                return NT_STATUS_INVALID_INFO_CLASS;
        }
 
-       status = netlogon_creds_cli_LogonSamLogon(creds,
+       status = netlogon_creds_cli_LogonSamLogon(creds_ctx,
                                                  binding_handle,
                                                  logon_type,
                                                  logon,
@@ -468,19 +601,20 @@ NTSTATUS rpccli_netlogon_password_logon(struct netlogon_creds_cli_context *creds
  **/
 
 
-NTSTATUS rpccli_netlogon_network_logon(struct netlogon_creds_cli_context *creds,
-                                      struct dcerpc_binding_handle *binding_handle,
-                                      TALLOC_CTX *mem_ctx,
-                                      uint32_t logon_parameters,
-                                      const char *username,
-                                      const char *domain,
-                                      const char *workstation,
-                                      const uint8_t chal[8],
-                                      DATA_BLOB lm_response,
-                                      DATA_BLOB nt_response,
-                                      uint8_t *authoritative,
-                                      uint32_t *flags,
-                                      struct netr_SamInfo3 **info3)
+NTSTATUS rpccli_netlogon_network_logon(
+       struct netlogon_creds_cli_context *creds_ctx,
+       struct dcerpc_binding_handle *binding_handle,
+       TALLOC_CTX *mem_ctx,
+       uint32_t logon_parameters,
+       const char *username,
+       const char *domain,
+       const char *workstation,
+       const uint8_t chal[8],
+       DATA_BLOB lm_response,
+       DATA_BLOB nt_response,
+       uint8_t *authoritative,
+       uint32_t *flags,
+       struct netr_SamInfo3 **info3)
 {
        NTSTATUS status;
        const char *workstation_name_slash;
@@ -539,7 +673,7 @@ NTSTATUS rpccli_netlogon_network_logon(struct netlogon_creds_cli_context *creds,
 
        /* Marshall data and send request */
 
-       status = netlogon_creds_cli_LogonSamLogon(creds,
+       status = netlogon_creds_cli_LogonSamLogon(creds_ctx,
                                                  binding_handle,
                                                  NetlogonNetworkInformation,
                                                  logon,