/* 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 . */ #include "includes.h" #include "auth.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_serversupplied_info *server_info = talloc_get_type_abort(server_returned_info, struct auth_serversupplied_info); NTSTATUS nt_status; 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; } /** * Some authentication methods 'fix' the challenge, so we may not be able to set it * * @return If the effective challenge used by the auth subsystem may be modified */ bool auth3_may_set_challenge(struct auth4_context *auth4_context) { struct auth_context *auth_context = talloc_get_type_abort(auth4_context->private_data, struct auth_context); return auth_context->challenge_may_be_modified; } /** * 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); auth_context->challenge = data_blob_talloc(auth_context, chal, 8); NT_STATUS_HAVE_NO_MEMORY(auth_context->challenge.data); auth_context->challenge_set_by = talloc_strdup(auth_context, challenge_set_by); NT_STATUS_HAVE_NO_MEMORY(auth_context->challenge_set_by); 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. */ NTSTATUS auth3_check_password(struct auth4_context *auth4_context, TALLOC_CTX *mem_ctx, const struct auth_usersupplied_info *user_info, void **server_returned_info, DATA_BLOB *session_key, DATA_BLOB *lm_session_key) { 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; NTSTATUS nt_status; bool username_was_mapped; /* 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); /* setup the string used by %U */ /* sub_set_smb_name checks for weird internally */ sub_set_smb_name(user_info->client.account_name); lp_load(get_dyn_CONFIGFILE(), false, false, true, true); nt_status = make_user_info_map(&mapped_user_info, user_info->client.account_name, user_info->client.domain_name, user_info->workstation_name, user_info->remote_host, 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 (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } mapped_user_info->logon_parameters = user_info->logon_parameters; mapped_user_info->flags = user_info->flags; nt_status = auth_check_ntlm_password(auth_context, mapped_user_info, &server_info); if (!NT_STATUS_IS_OK(nt_status)) { DEBUG(5,("Checking NTLMSSP password for %s\\%s failed: %s\n", user_info->client.domain_name, user_info->client.account_name, nt_errstr(nt_status))); } username_was_mapped = mapped_user_info->was_mapped; free_user_info(&mapped_user_info); if (!NT_STATUS_IS_OK(nt_status)) { nt_status = do_map_to_guest_server_info(nt_status, &server_info, user_info->client.account_name, user_info->client.domain_name); *server_returned_info = talloc_steal(mem_ctx, server_info); return nt_status; } server_info->nss_token |= username_was_mapped; /* 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() */ if (session_key) { DEBUG(10, ("Got NT session key of length %u\n", (unsigned int)server_info->session_key.length)); *session_key = server_info->session_key; talloc_steal(mem_ctx, server_info->session_key.data); server_info->session_key = data_blob_null; } if (lm_session_key) { DEBUG(10, ("Got LM session key of length %u\n", (unsigned int)server_info->lm_session_key.length)); *lm_session_key = server_info->lm_session_key; talloc_steal(mem_ctx, server_info->lm_session_key.data); server_info->lm_session_key = data_blob_null; } *server_returned_info = talloc_steal(mem_ctx, server_info); return nt_status; }