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 9e3c1bd30e6bd411529a7aa6ba1b8300702eb0e2..67c87354e694f3a549b9578ca3fd618dff766090 100644 (file)
@@ -67,10 +67,10 @@ NTSTATUS rpccli_pre_open_netlogon_creds(void)
                return NT_STATUS_NO_MEMORY;
        }
 
-       global_db = db_open(talloc_autofree_context(), fname,
+       global_db = db_open(frame, fname,
                            0, TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
                            O_RDWR|O_CREAT, 0600, DBWRAP_LOCK_ORDER_2,
-                           DBWRAP_FLAG_NONE);
+                           DBWRAP_FLAG_OPTIMIZE_READONLY_ACCESS);
        if (global_db == NULL) {
                TALLOC_FREE(frame);
                return NT_STATUS_NO_MEMORY;
@@ -86,13 +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 *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;
@@ -115,6 +117,7 @@ NTSTATUS rpccli_create_netlogon_creds(const char *server_computer,
                                                   sec_chan_type,
                                                   server_computer,
                                                   server_netbios_domain,
+                                                  server_dns_domain,
                                                   mem_ctx, netlogon_creds);
        TALLOC_FREE(frame);
        if (!NT_STATUS_IS_OK(status)) {
@@ -124,19 +127,49 @@ NTSTATUS rpccli_create_netlogon_creds(const char *server_computer,
        return NT_STATUS_OK;
 }
 
-NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
-                                    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_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;
+       const char *server_dns_domain;
+       const char *client_account;
+
+       sec_chan_type = cli_credentials_get_secure_channel_type(creds);
+       client_account = cli_credentials_get_username(creds);
+       server_netbios_domain = cli_credentials_get_domain(creds);
+       server_dns_domain = cli_credentials_get_realm(creds);
+
+       return rpccli_create_netlogon_creds(server_computer,
+                                           server_netbios_domain,
+                                           server_dns_domain,
+                                           client_account,
+                                           sec_chan_type,
+                                           msg_ctx, mem_ctx,
+                                           creds_ctx);
+}
+
+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;
        struct netlogon_creds_CredentialState *creds = NULL;
+       uint8_t num_nt_hashes = 0;
+       const struct samr_Password *nt_hashes[2] = { NULL, NULL };
+       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";
 
@@ -149,15 +182,28 @@ 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);
        }
 
-       status = cli_rpc_pipe_open_noauth(cli,
-                                         &ndr_table_netlogon,
-                                         &netlogon_pipe);
+       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,
+                                                   &netlogon_pipe);
        if (!NT_STATUS_IS_OK(status)) {
                DEBUG(5,("%s: failed to open noauth netlogon connection to %s - %s\n",
                         __FUNCTION__,
@@ -168,17 +214,17 @@ NTSTATUS rpccli_setup_netlogon_creds(struct cli_state *cli,
        }
        talloc_steal(frame, netlogon_pipe);
 
-       status = netlogon_creds_cli_auth(netlogon_creds,
+       status = netlogon_creds_cli_auth(creds_ctx,
                                         netlogon_pipe->binding_handle,
-                                        current_nt_hash,
-                                        previous_nt_hash);
+                                        num_nt_hashes,
+                                        nt_hashes,
+                                        &idx_nt_hashes);
        if (!NT_STATUS_IS_OK(status)) {
                TALLOC_FREE(frame);
                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;
@@ -189,28 +235,239 @@ 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(
+       struct cli_state *cli,
+       enum dcerpc_transport_t transport,
+       struct netlogon_creds_cli_context *creds_ctx,
+       bool force_reauth,
+       struct cli_credentials *cli_creds)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct netlogon_creds_cli_lck *lck;
+       NTSTATUS status;
+
+       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;
+       }
+
+       status = rpccli_setup_netlogon_creds_locked(
+               cli, transport, creds_ctx, force_reauth, cli_creds, NULL);
+
+       TALLOC_FREE(frame);
+
+       return status;
+}
+
+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)
+{
+       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;
+
+       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;
+       }
+
+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);
+               }
+       }
+
+       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;
+       }
+
+       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 = cli_rpc_pipe_open_noauth_transport(
+                       cli, transport, &ndr_table_netlogon, &rpccli);
+               if (!NT_STATUS_IS_OK(status)) {
+                       DBG_DEBUG("cli_rpc_pipe_open_noauth_transport "
+                                 "failed: %s\n", nt_errstr(status));
+                       goto fail;
+               }
+               goto done;
+       }
+
+       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;
+       }
+
+       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;
+       }
+
+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,
-                                       uint32_t logon_parameters,
-                                       const char *domain,
-                                       const char *username,
-                                       const char *password,
-                                       const char *workstation,
-                                       enum netr_LogonInfoClass logon_type)
+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;
        union netr_LogonLevel *logon;
        uint16_t validation_level = 0;
        union netr_Validation *validation = NULL;
-       uint8_t authoritative = 0;
-       uint32_t flags = 0;
        char *workstation_slash = NULL;
 
        logon = talloc_zero(frame, union netr_LogonLevel);
@@ -263,7 +520,7 @@ NTSTATUS rpccli_netlogon_password_logon(struct netlogon_creds_cli_context *creds
        }
        case NetlogonNetworkInformation: {
                struct netr_NetworkInfo *network_info;
-               uint8 chal[8];
+               uint8_t chal[8];
                unsigned char local_lm_response[24];
                unsigned char local_nt_response[24];
                struct netr_ChallengeResponse lm;
@@ -311,66 +568,28 @@ 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,
                                                  frame,
                                                  &validation_level,
                                                  &validation,
-                                                 &authoritative,
-                                                 &flags);
-       TALLOC_FREE(frame);
+                                                 authoritative,
+                                                 flags);
        if (!NT_STATUS_IS_OK(status)) {
+               TALLOC_FREE(frame);
                return status;
        }
 
-       return NT_STATUS_OK;
-}
-
-static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
-                                       uint16_t validation_level,
-                                       union netr_Validation *validation,
-                                       struct netr_SamInfo3 **info3_p)
-{
-       struct netr_SamInfo3 *info3;
-       NTSTATUS status;
-
-       if (validation == NULL) {
-               return NT_STATUS_INVALID_PARAMETER;
-       }
-
-       switch (validation_level) {
-       case 3:
-               if (validation->sam3 == NULL) {
-                       return NT_STATUS_INVALID_PARAMETER;
-               }
-
-               info3 = talloc_move(mem_ctx, &validation->sam3);
-               break;
-       case 6:
-               if (validation->sam6 == NULL) {
-                       return NT_STATUS_INVALID_PARAMETER;
-               }
-
-               info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
-               if (info3 == NULL) {
-                       return NT_STATUS_NO_MEMORY;
-               }
-               status = copy_netr_SamBaseInfo(info3, &validation->sam6->base, &info3->base);
-               if (!NT_STATUS_IS_OK(status)) {
-                       TALLOC_FREE(info3);
-                       return status;
-               }
-
-               info3->sidcount = validation->sam6->sidcount;
-               info3->sids = talloc_move(info3, &validation->sam6->sids);
-               break;
-       default:
-               return NT_STATUS_BAD_VALIDATION_CLASS;
+       status = map_validation_to_info3(mem_ctx,
+                                        validation_level, validation,
+                                        info3);
+       TALLOC_FREE(frame);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
        }
 
-       *info3_p = info3;
 
        return NT_STATUS_OK;
 }
@@ -382,19 +601,20 @@ static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
  **/
 
 
-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 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;
@@ -402,20 +622,11 @@ NTSTATUS rpccli_netlogon_network_logon(struct netlogon_creds_cli_context *creds,
        struct netr_NetworkInfo *network_info;
        uint16_t validation_level = 0;
        union netr_Validation *validation = NULL;
-       uint8_t _authoritative = 0;
-       uint32_t _flags = 0;
        struct netr_ChallengeResponse lm;
        struct netr_ChallengeResponse nt;
 
        *info3 = NULL;
 
-       if (authoritative == NULL) {
-               authoritative = &_authoritative;
-       }
-       if (flags == NULL) {
-               flags = &_flags;
-       }
-
        ZERO_STRUCT(lm);
        ZERO_STRUCT(nt);
 
@@ -462,7 +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,