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-rw-r--r--source3/auth/auth_ntlmssp.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/source3/auth/auth_ntlmssp.c b/source3/auth/auth_ntlmssp.c
new file mode 100644
index 0000000..73938dc
--- /dev/null
+++ b/source3/auth/auth_ntlmssp.c
@@ -0,0 +1,326 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 3.0
+ handle NLTMSSP, server side
+
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Andrew Bartlett 2001-2005,2011
+ Copyright (C) Stefan Metzmacher 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "auth.h"
+#include "libcli/security/security.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "source3/lib/substitute.h"
+
+NTSTATUS auth3_generate_session_info(struct auth4_context *auth_context,
+ TALLOC_CTX *mem_ctx,
+ void *server_returned_info,
+ const char *original_user_name,
+ uint32_t session_info_flags,
+ struct auth_session_info **session_info)
+{
+ struct auth_user_info_dc *user_info = NULL;
+ struct auth_serversupplied_info *server_info = NULL;
+ NTSTATUS nt_status;
+
+ /*
+ * This is a hack, some callers...
+ *
+ * Some callers pass auth_user_info_dc, the SCHANNEL and
+ * NCALRPC_AS_SYSTEM gensec modules.
+ *
+ * While the rest passes auth3_check_password() returned.
+ */
+ user_info = talloc_get_type(server_returned_info,
+ struct auth_user_info_dc);
+ if (user_info != NULL) {
+ const struct dom_sid *sid;
+ int cmp;
+
+ /*
+ * This should only be called from SCHANNEL or NCALRPC_AS_SYSTEM
+ */
+ if (user_info->num_sids != 1) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+ sid = &user_info->sids[PRIMARY_USER_SID_INDEX].sid;
+
+ cmp = dom_sid_compare(sid, &global_sid_System);
+ if (cmp == 0) {
+ return make_session_info_system(mem_ctx, session_info);
+ }
+
+ cmp = dom_sid_compare(sid, &global_sid_Anonymous);
+ if (cmp == 0) {
+ return make_session_info_anonymous(mem_ctx, session_info);
+ }
+
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ server_info = talloc_get_type_abort(server_returned_info,
+ struct auth_serversupplied_info);
+ nt_status = create_local_token(mem_ctx,
+ server_info,
+ NULL,
+ original_user_name,
+ session_info);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(10, ("create_local_token failed: %s\n",
+ nt_errstr(nt_status)));
+ return nt_status;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/**
+ * Return the challenge as determined by the authentication subsystem
+ * @return an 8 byte random challenge
+ */
+
+NTSTATUS auth3_get_challenge(struct auth4_context *auth4_context,
+ uint8_t chal[8])
+{
+ struct auth_context *auth_context = talloc_get_type_abort(auth4_context->private_data,
+ struct auth_context);
+ auth_get_ntlm_challenge(auth_context, chal);
+ return NT_STATUS_OK;
+}
+
+/**
+ * NTLM2 authentication modifies the effective challenge,
+ * @param challenge The new challenge value
+ */
+NTSTATUS auth3_set_challenge(struct auth4_context *auth4_context, const uint8_t *chal,
+ const char *challenge_set_by)
+{
+ struct auth_context *auth_context = talloc_get_type_abort(auth4_context->private_data,
+ struct auth_context);
+ bool ok;
+
+ ok = auth3_context_set_challenge(auth_context, chal, challenge_set_by);
+ if (!ok) {
+ /*
+ * This can only fail for ENOMEM
+ */
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ DEBUG(5, ("auth_context challenge set by %s\n", auth_context->challenge_set_by));
+ DEBUG(5, ("challenge is: \n"));
+ dump_data(5, auth_context->challenge.data, auth_context->challenge.length);
+ return NT_STATUS_OK;
+}
+
+/**
+ * Check the password on an NTLMSSP login.
+ *
+ * Return the session keys used on the connection.
+ */
+
+struct auth3_check_password_state {
+ uint8_t authoritative;
+ void *server_info;
+ DATA_BLOB nt_session_key;
+ DATA_BLOB lm_session_key;
+};
+
+struct tevent_req *auth3_check_password_send(
+ TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct auth4_context *auth4_context,
+ const struct auth_usersupplied_info *user_info)
+{
+ struct tevent_req *req = NULL;
+ struct auth3_check_password_state *state = NULL;
+ struct auth_context *auth_context = talloc_get_type_abort(
+ auth4_context->private_data, struct auth_context);
+ struct auth_usersupplied_info *mapped_user_info = NULL;
+ struct auth_serversupplied_info *server_info = NULL;
+ char *sanitized_username = NULL;
+ NTSTATUS nt_status;
+ bool username_was_mapped;
+
+ req = tevent_req_create(
+ mem_ctx, &state, struct auth3_check_password_state);
+ if (req == NULL) {
+ return NULL;
+ }
+
+ /*
+ * Be authoritative by default.
+ */
+ state->authoritative = 1;
+
+ /* The client has given us its machine name (which we only get over NBT transport).
+ We need to possibly reload smb.conf if smb.conf includes depend on the machine name. */
+
+ set_remote_machine_name(user_info->workstation_name, True);
+
+ nt_status = make_user_info_map(talloc_tos(),
+ &mapped_user_info,
+ user_info->client.account_name,
+ user_info->client.domain_name,
+ user_info->workstation_name,
+ user_info->remote_host,
+ user_info->local_host,
+ user_info->service_description,
+ user_info->password.response.lanman.data ? &user_info->password.response.lanman : NULL,
+ user_info->password.response.nt.data ? &user_info->password.response.nt : NULL,
+ NULL, NULL, NULL,
+ AUTH_PASSWORD_RESPONSE);
+
+ if (tevent_req_nterror(req, nt_status)) {
+ return tevent_req_post(req, ev);
+ }
+
+ mapped_user_info->logon_parameters = user_info->logon_parameters;
+
+ mapped_user_info->flags = user_info->flags;
+
+ sanitized_username = talloc_alpha_strcpy(
+ state,
+ user_info->client.account_name,
+ SAFE_NETBIOS_CHARS "$");
+ if (sanitized_username == NULL) {
+ tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+ return tevent_req_post(req, ev);
+ }
+
+ nt_status = auth_check_ntlm_password(state,
+ auth_context,
+ mapped_user_info,
+ &server_info,
+ &state->authoritative);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DBG_INFO("Checking NTLMSSP password for %s\\%s failed: "
+ "%s, authoritative=%"PRIu8"\n",
+ user_info->client.domain_name,
+ user_info->client.account_name,
+ nt_errstr(nt_status),
+ state->authoritative);
+ }
+
+ username_was_mapped = mapped_user_info->was_mapped;
+
+ TALLOC_FREE(mapped_user_info);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ nt_status = do_map_to_guest_server_info(
+ state,
+ nt_status,
+ user_info->client.account_name,
+ user_info->client.domain_name,
+ &server_info);
+ if (!tevent_req_nterror(req, nt_status)) {
+ state->authoritative = 1;
+
+ /* setup the string used by %U */
+ set_current_user_info(
+ sanitized_username,
+ server_info->unix_name,
+ server_info->info3->base.logon_domain.string);
+
+ lp_load_with_shares(get_dyn_CONFIGFILE());
+
+ tevent_req_done(req);
+ }
+ state->server_info = server_info;
+ return tevent_req_post(req, ev);
+ }
+
+ server_info->nss_token |= username_was_mapped;
+
+ /* setup the string used by %U */
+ set_current_user_info(sanitized_username,
+ server_info->unix_name,
+ server_info->info3->base.logon_domain.string);
+
+ lp_load_with_shares(get_dyn_CONFIGFILE());
+
+ /* Clear out the session keys, and pass them to the caller.
+ * They will not be used in this form again - instead the
+ * NTLMSSP code will decide on the final correct session key,
+ * and supply it to create_local_token() */
+
+ DBG_DEBUG("Got NT session key of length %zu\n",
+ server_info->session_key.length);
+ state->nt_session_key = (DATA_BLOB) {
+ .data = talloc_move(
+ state, &server_info->session_key.data),
+ .length = server_info->session_key.length,
+ };
+ server_info->session_key = data_blob_null;
+
+ DBG_DEBUG("Got LM session key of length %zu\n",
+ server_info->lm_session_key.length);
+ state->lm_session_key = (DATA_BLOB) {
+ .data = talloc_move(
+ state, &server_info->lm_session_key.data),
+ .length = server_info->lm_session_key.length,
+ };
+ server_info->lm_session_key = data_blob_null;
+
+ state->server_info = server_info;
+
+ tevent_req_done(req);
+ return tevent_req_post(req, ev);
+}
+
+NTSTATUS auth3_check_password_recv(struct tevent_req *req,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *pauthoritative,
+ void **server_returned_info,
+ DATA_BLOB *nt_session_key,
+ DATA_BLOB *lm_session_key)
+{
+ struct auth3_check_password_state *state = tevent_req_data(
+ req, struct auth3_check_password_state);
+ NTSTATUS status;
+
+ if (pauthoritative != NULL) {
+ *pauthoritative = state->authoritative;
+ }
+
+ if (tevent_req_is_nterror(req, &status)) {
+ return status;
+ }
+
+ if (server_returned_info != NULL) {
+ *server_returned_info = talloc_move(
+ mem_ctx, &state->server_info);
+ }
+ if (nt_session_key != NULL) {
+ *nt_session_key = (DATA_BLOB) {
+ .data = talloc_move(
+ mem_ctx, &state->nt_session_key.data),
+ .length = state->nt_session_key.length,
+ };
+ }
+ if (lm_session_key != NULL) {
+ *lm_session_key = (DATA_BLOB) {
+ .data = talloc_move(
+ mem_ctx, &state->lm_session_key.data),
+ .length = state->lm_session_key.length,
+ };
+ }
+
+ return NT_STATUS_OK;
+}
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