diff options
Diffstat (limited to 'source4/auth/ntlmssp/ntlmssp_client.c')
| -rw-r--r-- | source4/auth/ntlmssp/ntlmssp_client.c | 438 |
1 files changed, 0 insertions, 438 deletions
diff --git a/source4/auth/ntlmssp/ntlmssp_client.c b/source4/auth/ntlmssp/ntlmssp_client.c deleted file mode 100644 index 6e372dc8f8..0000000000 --- a/source4/auth/ntlmssp/ntlmssp_client.c +++ /dev/null @@ -1,438 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 3.0 - handle NLTMSSP, client server side parsing - - Copyright (C) Andrew Tridgell 2001 - Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2005 - 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/>. -*/ - -struct auth_session_info; - -#include "includes.h" -#include "auth/ntlmssp/ntlmssp.h" -#include "source4/auth/ntlmssp/proto.h" -#include "../lib/crypto/crypto.h" -#include "../libcli/auth/libcli_auth.h" -#include "auth/credentials/credentials.h" -#include "auth/gensec/gensec.h" -#include "param/param.h" -#include "auth/ntlmssp/ntlmssp_private.h" -#include "../librpc/gen_ndr/ndr_ntlmssp.h" -#include "../auth/ntlmssp/ntlmssp_ndr.h" - -/********************************************************************* - Client side NTLMSSP -*********************************************************************/ - -/** - * Next state function for the Initial packet - * - * @param ntlmssp_state NTLMSSP State - * @param out_mem_ctx The DATA_BLOB *out will be allocated on this context - * @param in A NULL data blob (input ignored) - * @param out The initial negotiate request to the server, as an talloc()ed DATA_BLOB, on out_mem_ctx - * @return Errors or NT_STATUS_OK. - */ - -NTSTATUS ntlmssp_client_initial(struct gensec_security *gensec_security, - TALLOC_CTX *out_mem_ctx, - DATA_BLOB in, DATA_BLOB *out) -{ - struct gensec_ntlmssp_context *gensec_ntlmssp = - talloc_get_type_abort(gensec_security->private_data, - struct gensec_ntlmssp_context); - struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state; - const char *domain = ntlmssp_state->client.netbios_domain; - const char *workstation = ntlmssp_state->client.netbios_name; - NTSTATUS status; - - /* These don't really matter in the initial packet, so don't panic if they are not set */ - if (!domain) { - domain = ""; - } - - if (!workstation) { - workstation = ""; - } - - if (ntlmssp_state->unicode) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE; - } else { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM; - } - - if (ntlmssp_state->use_ntlmv2) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2; - } - - /* generate the ntlmssp negotiate packet */ - status = msrpc_gen(out_mem_ctx, - out, "CddAA", - "NTLMSSP", - NTLMSSP_NEGOTIATE, - ntlmssp_state->neg_flags, - domain, - workstation); - - if (!NT_STATUS_IS_OK(status)) { - DEBUG(0, ("ntlmssp_client_initial: failed to generate " - "ntlmssp negotiate packet\n")); - return status; - } - - if (DEBUGLEVEL >= 10) { - struct NEGOTIATE_MESSAGE *negotiate = talloc( - talloc_tos(), struct NEGOTIATE_MESSAGE); - if (negotiate != NULL) { - status = ntlmssp_pull_NEGOTIATE_MESSAGE( - out, negotiate, negotiate); - if (NT_STATUS_IS_OK(status)) { - NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE, - negotiate); - } - TALLOC_FREE(negotiate); - } - } - - ntlmssp_state->expected_state = NTLMSSP_CHALLENGE; - - return NT_STATUS_MORE_PROCESSING_REQUIRED; -} - -/** - * Next state function for the Challenge Packet. Generate an auth packet. - * - * @param gensec_security GENSEC state - * @param out_mem_ctx Memory context for *out - * @param in The server challnege, as a DATA_BLOB. reply.data must be NULL - * @param out The next request (auth packet) to the server, as an allocated DATA_BLOB, on the out_mem_ctx context - * @return Errors or NT_STATUS_OK. - */ - -NTSTATUS ntlmssp_client_challenge(struct gensec_security *gensec_security, - TALLOC_CTX *out_mem_ctx, - const DATA_BLOB in, DATA_BLOB *out) -{ - struct gensec_ntlmssp_context *gensec_ntlmssp = - talloc_get_type_abort(gensec_security->private_data, - struct gensec_ntlmssp_context); - struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state; - uint32_t chal_flags, ntlmssp_command, unkn1, unkn2; - DATA_BLOB server_domain_blob; - DATA_BLOB challenge_blob; - DATA_BLOB target_info = data_blob(NULL, 0); - char *server_domain; - const char *chal_parse_string; - const char *auth_gen_string; - DATA_BLOB lm_response = data_blob(NULL, 0); - DATA_BLOB nt_response = data_blob(NULL, 0); - DATA_BLOB session_key = data_blob(NULL, 0); - DATA_BLOB lm_session_key = data_blob(NULL, 0); - DATA_BLOB encrypted_session_key = data_blob(NULL, 0); - NTSTATUS nt_status; - int flags = 0; - const char *user, *domain; - - TALLOC_CTX *mem_ctx = talloc_new(out_mem_ctx); - if (!mem_ctx) { - return NT_STATUS_NO_MEMORY; - } - - if (!msrpc_parse(mem_ctx, - &in, "CdBd", - "NTLMSSP", - &ntlmssp_command, - &server_domain_blob, - &chal_flags)) { - DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n")); - dump_data(2, in.data, in.length); - talloc_free(mem_ctx); - - return NT_STATUS_INVALID_PARAMETER; - } - - data_blob_free(&server_domain_blob); - - DEBUG(3, ("Got challenge flags:\n")); - debug_ntlmssp_flags(chal_flags); - - ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, ntlmssp_state->allow_lm_key); - - if (ntlmssp_state->unicode) { - if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) { - chal_parse_string = "CdUdbddB"; - } else { - chal_parse_string = "CdUdbdd"; - } - auth_gen_string = "CdBBUUUBd"; - } else { - if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO) { - chal_parse_string = "CdAdbddB"; - } else { - chal_parse_string = "CdAdbdd"; - } - - auth_gen_string = "CdBBAAABd"; - } - - if (!msrpc_parse(mem_ctx, - &in, chal_parse_string, - "NTLMSSP", - &ntlmssp_command, - &server_domain, - &chal_flags, - &challenge_blob, 8, - &unkn1, &unkn2, - &target_info)) { - DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n")); - dump_data(2, in.data, in.length); - talloc_free(mem_ctx); - return NT_STATUS_INVALID_PARAMETER; - } - - if (chal_flags & NTLMSSP_TARGET_TYPE_SERVER) { - ntlmssp_state->server.is_standalone = true; - } else { - ntlmssp_state->server.is_standalone = false; - } - /* TODO: parse struct_blob and fill in the rest */ - ntlmssp_state->server.netbios_name = ""; - ntlmssp_state->server.netbios_domain = server_domain; - ntlmssp_state->server.dns_name = ""; - ntlmssp_state->server.dns_domain = ""; - - if (challenge_blob.length != 8) { - talloc_free(mem_ctx); - return NT_STATUS_INVALID_PARAMETER; - } - - cli_credentials_get_ntlm_username_domain(gensec_security->credentials, mem_ctx, - &user, &domain); - - if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) { - flags |= CLI_CRED_NTLM2; - } - if (ntlmssp_state->use_ntlmv2) { - flags |= CLI_CRED_NTLMv2_AUTH; - } - if (ntlmssp_state->use_nt_response) { - flags |= CLI_CRED_NTLM_AUTH; - } - if (lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx)) { - flags |= CLI_CRED_LANMAN_AUTH; - } - - nt_status = cli_credentials_get_ntlm_response(gensec_security->credentials, mem_ctx, - &flags, challenge_blob, target_info, - &lm_response, &nt_response, - &lm_session_key, &session_key); - - if (!NT_STATUS_IS_OK(nt_status)) { - return nt_status; - } - - if (!(flags & CLI_CRED_LANMAN_AUTH)) { - /* LM Key is still possible, just silly, so we do not - * allow it. Fortunetly all LM crypto is off by - * default and we require command line options to end - * up here */ - ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY; - } - - if (!(flags & CLI_CRED_NTLM2)) { - /* NTLM2 is incompatible... */ - ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2; - } - - if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) - && lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx) && lm_session_key.length == 16) { - DATA_BLOB new_session_key = data_blob_talloc(mem_ctx, NULL, 16); - if (lm_response.length == 24) { - SMBsesskeygen_lm_sess_key(lm_session_key.data, lm_response.data, - new_session_key.data); - } else { - static const uint8_t zeros[24]; - SMBsesskeygen_lm_sess_key(lm_session_key.data, zeros, - new_session_key.data); - } - session_key = new_session_key; - dump_data_pw("LM session key\n", session_key.data, session_key.length); - } - - - /* Key exchange encryptes a new client-generated session key with - the password-derived key */ - if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) { - /* Make up a new session key */ - uint8_t client_session_key[16]; - generate_secret_buffer(client_session_key, sizeof(client_session_key)); - - /* Encrypt the new session key with the old one */ - encrypted_session_key = data_blob_talloc(ntlmssp_state, - client_session_key, sizeof(client_session_key)); - dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, encrypted_session_key.length); - arcfour_crypt(encrypted_session_key.data, session_key.data, encrypted_session_key.length); - dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length); - - /* Mark the new session key as the 'real' session key */ - session_key = data_blob_talloc(mem_ctx, client_session_key, sizeof(client_session_key)); - } - - DEBUG(3, ("NTLMSSP: Set final flags:\n")); - debug_ntlmssp_flags(ntlmssp_state->neg_flags); - - /* this generates the actual auth packet */ - nt_status = msrpc_gen(mem_ctx, - out, auth_gen_string, - "NTLMSSP", - NTLMSSP_AUTH, - lm_response.data, lm_response.length, - nt_response.data, nt_response.length, - domain, - user, - cli_credentials_get_workstation(gensec_security->credentials), - encrypted_session_key.data, encrypted_session_key.length, - ntlmssp_state->neg_flags); - if (!NT_STATUS_IS_OK(nt_status)) { - talloc_free(mem_ctx); - return nt_status; - } - - ntlmssp_state->session_key = session_key; - talloc_steal(ntlmssp_state, session_key.data); - - talloc_steal(out_mem_ctx, out->data); - - ntlmssp_state->chal = challenge_blob; - ntlmssp_state->lm_resp = lm_response; - talloc_steal(ntlmssp_state->lm_resp.data, lm_response.data); - ntlmssp_state->nt_resp = nt_response; - talloc_steal(ntlmssp_state->nt_resp.data, nt_response.data); - - ntlmssp_state->expected_state = NTLMSSP_DONE; - - if (gensec_security->want_features & (GENSEC_FEATURE_SIGN|GENSEC_FEATURE_SEAL)) { - nt_status = ntlmssp_sign_init(ntlmssp_state); - if (!NT_STATUS_IS_OK(nt_status)) { - DEBUG(1, ("Could not setup NTLMSSP signing/sealing system (error was: %s)\n", - nt_errstr(nt_status))); - talloc_free(mem_ctx); - return nt_status; - } - } - - talloc_free(mem_ctx); - return NT_STATUS_OK; -} - -NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security) -{ - struct gensec_ntlmssp_context *gensec_ntlmssp; - struct ntlmssp_state *ntlmssp_state; - NTSTATUS nt_status; - - nt_status = gensec_ntlmssp_start(gensec_security); - NT_STATUS_NOT_OK_RETURN(nt_status); - - gensec_ntlmssp = - talloc_get_type_abort(gensec_security->private_data, - struct gensec_ntlmssp_context); - - ntlmssp_state = talloc_zero(gensec_ntlmssp, - struct ntlmssp_state); - if (!ntlmssp_state) { - return NT_STATUS_NO_MEMORY; - } - - ntlmssp_state->callback_private = gensec_ntlmssp; - - gensec_ntlmssp->ntlmssp_state = ntlmssp_state; - - ntlmssp_state = gensec_ntlmssp->ntlmssp_state; - - ntlmssp_state->role = NTLMSSP_CLIENT; - - ntlmssp_state->client.netbios_domain = lpcfg_workgroup(gensec_security->settings->lp_ctx); - ntlmssp_state->client.netbios_name = cli_credentials_get_workstation(gensec_security->credentials); - - ntlmssp_state->unicode = gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "unicode", true); - - ntlmssp_state->use_nt_response = gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "send_nt_reponse", true); - - ntlmssp_state->allow_lm_key = (lpcfg_client_lanman_auth(gensec_security->settings->lp_ctx) - && (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "allow_lm_key", false) - || gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "lm_key", false))); - - ntlmssp_state->use_ntlmv2 = lpcfg_client_ntlmv2_auth(gensec_security->settings->lp_ctx); - - ntlmssp_state->expected_state = NTLMSSP_INITIAL; - - ntlmssp_state->neg_flags = - NTLMSSP_NEGOTIATE_NTLM | - NTLMSSP_REQUEST_TARGET; - - if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "128bit", true)) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_128; - } - - if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "56bit", false)) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_56; - } - - if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "lm_key", false)) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY; - } - - if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "keyexchange", true)) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH; - } - - if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "alwayssign", true)) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN; - } - - if (gensec_setting_bool(gensec_security->settings, "ntlmssp_client", "ntlm2", true)) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2; - } else { - /* apparently we can't do ntlmv2 if we don't do ntlm2 */ - ntlmssp_state->use_ntlmv2 = false; - } - - if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) { - /* - * We need to set this to allow a later SetPassword - * via the SAMR pipe to succeed. Strange.... We could - * also add NTLMSSP_NEGOTIATE_SEAL here. JRA. - * - * Without this, Windows will not create the master key - * that it thinks is only used for NTLMSSP signing and - * sealing. (It is actually pulled out and used directly) - */ - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN; - } - if (gensec_security->want_features & GENSEC_FEATURE_SIGN) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN; - } - if (gensec_security->want_features & GENSEC_FEATURE_SEAL) { - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN; - ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL; - } - - return NT_STATUS_OK; -} - |