/* Unix SMB/CIFS implementation. test suite for netlogon SamLogon operations Copyright (C) Andrew Tridgell 2003 Copyright (C) Andrew Bartlett 2003-2004 Copyright (C) Tim Potter 2003 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 2 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, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" #include "librpc/gen_ndr/ndr_netlogon.h" #include "auth/auth.h" #include "lib/crypto/crypto.h" #include "lib/cmdline/popt_common.h" #define TEST_MACHINE_NAME "samlogontest" #define TEST_USER_NAME "samlogontestuser" enum ntlm_break { BREAK_BOTH, BREAK_NONE, BREAK_LM, BREAK_NT, NO_LM, NO_NT }; struct samlogon_state { TALLOC_CTX *mem_ctx; const char *account_name; const char *account_domain; const char *password; struct dcerpc_pipe *p; int function_level; struct netr_LogonSamLogon r; struct netr_LogonSamLogonEx r_ex; struct netr_LogonSamLogonWithFlags r_flags; struct netr_Authenticator auth, auth2; struct creds_CredentialState *creds; NTSTATUS expected_error; DATA_BLOB chall; }; /* Authenticate a user with a challenge/response, checking session key and valid authentication types */ static NTSTATUS check_samlogon(struct samlogon_state *samlogon_state, enum ntlm_break break_which, DATA_BLOB *chall, DATA_BLOB *lm_response, DATA_BLOB *nt_response, uint8_t lm_key[8], uint8_t user_session_key[16], char **error_string) { NTSTATUS status; struct netr_LogonSamLogon *r = &samlogon_state->r; struct netr_LogonSamLogonEx *r_ex = &samlogon_state->r_ex; struct netr_LogonSamLogonWithFlags *r_flags = &samlogon_state->r_flags; struct netr_NetworkInfo ninfo; struct netr_SamBaseInfo *base = NULL; uint16_t validation_level = 0; samlogon_state->r.in.logon.network = &ninfo; samlogon_state->r_ex.in.logon.network = &ninfo; samlogon_state->r_flags.in.logon.network = &ninfo; ninfo.identity_info.domain_name.string = samlogon_state->account_domain; ninfo.identity_info.parameter_control = 0; ninfo.identity_info.logon_id_low = 0; ninfo.identity_info.logon_id_high = 0; ninfo.identity_info.account_name.string = samlogon_state->account_name; ninfo.identity_info.workstation.string = TEST_MACHINE_NAME; memcpy(ninfo.challenge, chall->data, 8); switch (break_which) { case BREAK_NONE: break; case BREAK_LM: if (lm_response && lm_response->data) { lm_response->data[0]++; } break; case BREAK_NT: if (nt_response && nt_response->data) { nt_response->data[0]++; } break; case BREAK_BOTH: if (lm_response && lm_response->data) { lm_response->data[0]++; } if (nt_response && nt_response->data) { nt_response->data[0]++; } break; case NO_LM: data_blob_free(lm_response); break; case NO_NT: data_blob_free(nt_response); break; } if (nt_response) { ninfo.nt.data = nt_response->data; ninfo.nt.length = nt_response->length; } else { ninfo.nt.data = NULL; ninfo.nt.length = 0; } if (lm_response) { ninfo.lm.data = lm_response->data; ninfo.lm.length = lm_response->length; } else { ninfo.lm.data = NULL; ninfo.lm.length = 0; } switch (samlogon_state->function_level) { case DCERPC_NETR_LOGONSAMLOGON: ZERO_STRUCT(samlogon_state->auth2); creds_client_authenticator(samlogon_state->creds, &samlogon_state->auth); r->out.return_authenticator = NULL; status = dcerpc_netr_LogonSamLogon(samlogon_state->p, samlogon_state->mem_ctx, r); if (!r->out.return_authenticator || !creds_client_check(samlogon_state->creds, &r->out.return_authenticator->cred)) { printf("Credential chaining failed\n"); } if (!NT_STATUS_IS_OK(status)) { if (error_string) { *error_string = strdup(nt_errstr(status)); } } validation_level = r->in.validation_level; switch (validation_level) { case 2: base = &r->out.validation.sam2->base; break; case 3: base = &r->out.validation.sam3->base; break; case 6: base = &r->out.validation.sam6->base; break; } break; case DCERPC_NETR_LOGONSAMLOGONEX: status = dcerpc_netr_LogonSamLogonEx(samlogon_state->p, samlogon_state->mem_ctx, r_ex); if (!NT_STATUS_IS_OK(status)) { if (error_string) { *error_string = strdup(nt_errstr(status)); } } validation_level = r_ex->in.validation_level; switch (validation_level) { case 2: base = &r_ex->out.validation.sam2->base; break; case 3: base = &r_ex->out.validation.sam3->base; break; case 6: base = &r_ex->out.validation.sam6->base; break; } break; case DCERPC_NETR_LOGONSAMLOGONWITHFLAGS: ZERO_STRUCT(samlogon_state->auth2); creds_client_authenticator(samlogon_state->creds, &samlogon_state->auth); r_flags->out.return_authenticator = NULL; status = dcerpc_netr_LogonSamLogonWithFlags(samlogon_state->p, samlogon_state->mem_ctx, r_flags); if (!r_flags->out.return_authenticator || !creds_client_check(samlogon_state->creds, &r_flags->out.return_authenticator->cred)) { printf("Credential chaining failed\n"); } if (!NT_STATUS_IS_OK(status)) { if (error_string) { *error_string = strdup(nt_errstr(status)); } } validation_level = r_flags->in.validation_level; switch (validation_level) { case 2: base = &r_flags->out.validation.sam2->base; break; case 3: base = &r_flags->out.validation.sam3->base; break; case 6: base = &r_flags->out.validation.sam6->base; break; } break; } if (!NT_STATUS_IS_OK(status)) { /* we cannot check the session key, if the logon failed... */ return status; } if (!base) { printf("No user info returned from 'successful' SamLogon*() call!\n"); return NT_STATUS_INVALID_PARAMETER; } /* find and decyrpt the session keys, return in parameters above */ if (validation_level == 6) { /* they aren't encrypted! */ if (user_session_key) { memcpy(user_session_key, base->key.key, 16); } if (lm_key) { memcpy(lm_key, base->LMSessKey.key, 8); } } else if (samlogon_state->creds->negotiate_flags & NETLOGON_NEG_ARCFOUR) { static const char zeros[16]; if (memcmp(base->key.key, zeros, sizeof(base->key.key)) != 0) { creds_arcfour_crypt(samlogon_state->creds, base->key.key, sizeof(base->key.key)); } if (user_session_key) { memcpy(user_session_key, base->key.key, 16); } if (memcmp(base->LMSessKey.key, zeros, sizeof(base->LMSessKey.key)) != 0) { creds_arcfour_crypt(samlogon_state->creds, base->LMSessKey.key, sizeof(base->LMSessKey.key)); } if (lm_key) { memcpy(lm_key, base->LMSessKey.key, 8); } } else { static const char zeros[16]; if (user_session_key) { memcpy(user_session_key, base->key.key, 16); } if (memcmp(base->LMSessKey.key, zeros, sizeof(base->LMSessKey.key)) != 0) { creds_des_decrypt_LMKey(samlogon_state->creds, &base->LMSessKey); } if (lm_key) { memcpy(lm_key, base->LMSessKey.key, 8); } } return status; } /* * Test the normal 'LM and NTLM' combination */ static BOOL test_lm_ntlm_broken(struct samlogon_state *samlogon_state, enum ntlm_break break_which, char **error_string) { BOOL pass = True; BOOL lm_good; NTSTATUS nt_status; DATA_BLOB lm_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); DATA_BLOB nt_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); DATA_BLOB session_key = data_blob_talloc(samlogon_state->mem_ctx, NULL, 16); uint8_t lm_key[8]; uint8_t user_session_key[16]; uint8_t lm_hash[16]; uint8_t nt_hash[16]; ZERO_STRUCT(lm_key); ZERO_STRUCT(user_session_key); lm_good = SMBencrypt(samlogon_state->password, samlogon_state->chall.data, lm_response.data); if (!lm_good) { ZERO_STRUCT(lm_hash); } else { E_deshash(samlogon_state->password, lm_hash); } SMBNTencrypt(samlogon_state->password, samlogon_state->chall.data, nt_response.data); E_md4hash(samlogon_state->password, nt_hash); SMBsesskeygen_ntv1(nt_hash, session_key.data); nt_status = check_samlogon(samlogon_state, break_which, &samlogon_state->chall, &lm_response, &nt_response, lm_key, user_session_key, error_string); data_blob_free(&lm_response); if (NT_STATUS_EQUAL(NT_STATUS_WRONG_PASSWORD, nt_status)) { /* for 'long' passwords, the LM password is invalid */ if (break_which == NO_NT && !lm_good) { return True; } return ((break_which == BREAK_NT) || (break_which == BREAK_BOTH)); } if (!NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status)) { SAFE_FREE(*error_string); asprintf(error_string, "Expected error: %s, got %s", nt_errstr(samlogon_state->expected_error), nt_errstr(nt_status)); return False; } else if (NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status) && !NT_STATUS_IS_OK(nt_status)) { return True; } else if (!NT_STATUS_IS_OK(nt_status)) { return False; } if (break_which == NO_NT && !lm_good) { *error_string = strdup("LM password is 'long' (> 14 chars and therefore invalid) but login did not fail!"); return False; } if (memcmp(lm_hash, lm_key, sizeof(lm_key)) != 0) { printf("LM Key does not match expectations!\n"); printf("lm_key:\n"); dump_data(1, lm_key, 8); printf("expected:\n"); dump_data(1, lm_hash, 8); pass = False; } switch (break_which) { case NO_NT: { uint8_t lm_key_expected[16]; memcpy(lm_key_expected, lm_hash, 8); memset(lm_key_expected+8, '\0', 8); if (memcmp(lm_key_expected, user_session_key, 16) != 0) { *error_string = strdup("NT Session Key does not match expectations (should be first-8 LM hash)!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, sizeof(user_session_key)); printf("expected:\n"); dump_data(1, lm_key_expected, sizeof(lm_key_expected)); pass = False; } break; } default: if (memcmp(session_key.data, user_session_key, sizeof(user_session_key)) != 0) { *error_string = strdup("NT Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, session_key.data, session_key.length); pass = False; } } return pass; } /* * Test LM authentication, no NT response supplied */ static BOOL test_lm(struct samlogon_state *samlogon_state, char **error_string) { return test_lm_ntlm_broken(samlogon_state, NO_NT, error_string); } /* * Test the NTLM response only, no LM. */ static BOOL test_ntlm(struct samlogon_state *samlogon_state, char **error_string) { return test_lm_ntlm_broken(samlogon_state, NO_LM, error_string); } /* * Test the NTLM response only, but in the LM field. */ static BOOL test_ntlm_in_lm(struct samlogon_state *samlogon_state, char **error_string) { BOOL pass = True; NTSTATUS nt_status; DATA_BLOB nt_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); uint8_t lm_key[8]; uint8_t lm_hash[16]; uint8_t user_session_key[16]; ZERO_STRUCT(user_session_key); SMBNTencrypt(samlogon_state->password, samlogon_state->chall.data, nt_response.data); E_deshash(samlogon_state->password, lm_hash); nt_status = check_samlogon(samlogon_state, BREAK_NONE, &samlogon_state->chall, &nt_response, NULL, lm_key, user_session_key, error_string); if (!NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status)) { SAFE_FREE(*error_string); asprintf(error_string, "Expected error: %s, got %s", nt_errstr(samlogon_state->expected_error), nt_errstr(nt_status)); return False; } else if (NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status) && !NT_STATUS_IS_OK(nt_status)) { return True; } else if (!NT_STATUS_IS_OK(nt_status)) { return False; } if (memcmp(lm_hash, lm_key, sizeof(lm_key)) != 0) { printf("LM Key does not match expectations!\n"); printf("lm_key:\n"); dump_data(1, lm_key, 8); printf("expected:\n"); dump_data(1, lm_hash, 8); pass = False; } if (memcmp(lm_hash, user_session_key, 8) != 0) { uint8_t lm_key_expected[16]; memcpy(lm_key_expected, lm_hash, 8); memset(lm_key_expected+8, '\0', 8); if (memcmp(lm_key_expected, user_session_key, 16) != 0) { printf("NT Session Key does not match expectations (should be first-8 LM hash)!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, sizeof(user_session_key)); printf("expected:\n"); dump_data(1, lm_key_expected, sizeof(lm_key_expected)); pass = False; } } return pass; } /* * Test the NTLM response only, but in the both the NT and LM fields. */ static BOOL test_ntlm_in_both(struct samlogon_state *samlogon_state, char **error_string) { BOOL pass = True; BOOL lm_good; NTSTATUS nt_status; DATA_BLOB nt_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); DATA_BLOB session_key = data_blob_talloc(samlogon_state->mem_ctx, NULL, 16); uint8_t lm_key[8]; uint8_t lm_hash[16]; uint8_t user_session_key[16]; uint8_t nt_hash[16]; ZERO_STRUCT(lm_key); ZERO_STRUCT(user_session_key); SMBNTencrypt(samlogon_state->password, samlogon_state->chall.data, nt_response.data); E_md4hash(samlogon_state->password, nt_hash); SMBsesskeygen_ntv1(nt_hash, session_key.data); lm_good = E_deshash(samlogon_state->password, lm_hash); if (!lm_good) { ZERO_STRUCT(lm_hash); } nt_status = check_samlogon(samlogon_state, BREAK_NONE, &samlogon_state->chall, NULL, &nt_response, lm_key, user_session_key, error_string); if (!NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status)) { SAFE_FREE(*error_string); asprintf(error_string, "Expected error: %s, got %s", nt_errstr(samlogon_state->expected_error), nt_errstr(nt_status)); return False; } else if (NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status) && !NT_STATUS_IS_OK(nt_status)) { return True; } else if (!NT_STATUS_IS_OK(nt_status)) { return False; } if (!NT_STATUS_IS_OK(nt_status)) { return False; } if (memcmp(lm_hash, lm_key, sizeof(lm_key)) != 0) { printf("LM Key does not match expectations!\n"); printf("lm_key:\n"); dump_data(1, lm_key, 8); printf("expected:\n"); dump_data(1, lm_hash, 8); pass = False; } if (memcmp(session_key.data, user_session_key, sizeof(user_session_key)) != 0) { printf("NT Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, session_key.data, session_key.length); pass = False; } return pass; } /* * Test the NTLMv2 and LMv2 responses */ enum ntlmv2_domain { UPPER_DOMAIN, NO_DOMAIN }; static BOOL test_lmv2_ntlmv2_broken(struct samlogon_state *samlogon_state, enum ntlm_break break_which, enum ntlmv2_domain ntlmv2_domain, char **error_string) { BOOL pass = True; NTSTATUS nt_status; DATA_BLOB ntlmv2_response = data_blob(NULL, 0); DATA_BLOB lmv2_response = data_blob(NULL, 0); DATA_BLOB lmv2_session_key = data_blob(NULL, 0); DATA_BLOB ntlmv2_session_key = data_blob(NULL, 0); DATA_BLOB names_blob = NTLMv2_generate_names_blob(samlogon_state->mem_ctx, TEST_MACHINE_NAME, lp_workgroup()); uint8_t lm_session_key[8]; uint8_t user_session_key[16]; ZERO_STRUCT(lm_session_key); ZERO_STRUCT(user_session_key); switch (ntlmv2_domain) { case UPPER_DOMAIN: if (!SMBNTLMv2encrypt(samlogon_state->mem_ctx, samlogon_state->account_name, samlogon_state->account_domain, samlogon_state->password, &samlogon_state->chall, &names_blob, &lmv2_response, &ntlmv2_response, &lmv2_session_key, &ntlmv2_session_key)) { data_blob_free(&names_blob); return False; } break; case NO_DOMAIN: if (!SMBNTLMv2encrypt(samlogon_state->mem_ctx, samlogon_state->account_name, "", samlogon_state->password, &samlogon_state->chall, &names_blob, &lmv2_response, &ntlmv2_response, &lmv2_session_key, &ntlmv2_session_key)) { data_blob_free(&names_blob); return False; } break; } data_blob_free(&names_blob); nt_status = check_samlogon(samlogon_state, break_which, &samlogon_state->chall, &lmv2_response, &ntlmv2_response, lm_session_key, user_session_key, error_string); data_blob_free(&lmv2_response); data_blob_free(&ntlmv2_response); if (NT_STATUS_EQUAL(nt_status, NT_STATUS_WRONG_PASSWORD)) { return break_which == BREAK_BOTH; } if (!NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status)) { SAFE_FREE(*error_string); asprintf(error_string, "Expected error: %s, got %s", nt_errstr(samlogon_state->expected_error), nt_errstr(nt_status)); return False; } else if (NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status) && !NT_STATUS_IS_OK(nt_status)) { return True; } else if (!NT_STATUS_IS_OK(nt_status)) { return False; } switch (break_which) { case NO_NT: if (memcmp(lmv2_session_key.data, user_session_key, sizeof(user_session_key)) != 0) { printf("USER (LMv2) Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, lmv2_session_key.data, ntlmv2_session_key.length); pass = False; } if (memcmp(lmv2_session_key.data, lm_session_key, sizeof(lm_session_key)) != 0) { printf("LM (LMv2) Session Key does not match expectations!\n"); printf("lm_session_key:\n"); dump_data(1, lm_session_key, 8); printf("expected:\n"); dump_data(1, lmv2_session_key.data, 8); pass = False; } break; default: if (memcmp(ntlmv2_session_key.data, user_session_key, sizeof(user_session_key)) != 0) { if (memcmp(lmv2_session_key.data, user_session_key, sizeof(user_session_key)) == 0) { printf("USER (NTLMv2) Session Key expected, got LMv2 sessesion key instead:\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, ntlmv2_session_key.data, ntlmv2_session_key.length); pass = False; } else { printf("USER (NTLMv2) Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, ntlmv2_session_key.data, ntlmv2_session_key.length); pass = False; } } if (memcmp(ntlmv2_session_key.data, lm_session_key, sizeof(lm_session_key)) != 0) { if (memcmp(lmv2_session_key.data, lm_session_key, sizeof(lm_session_key)) == 0) { printf("LM (NTLMv2) Session Key expected, got LMv2 sessesion key instead:\n"); printf("user_session_key:\n"); dump_data(1, lm_session_key, 8); printf("expected:\n"); dump_data(1, ntlmv2_session_key.data, 8); pass = False; } else { printf("LM (NTLMv2) Session Key does not match expectations!\n"); printf("lm_session_key:\n"); dump_data(1, lm_session_key, 8); printf("expected:\n"); dump_data(1, ntlmv2_session_key.data, 8); pass = False; } } } return pass; } /* * Test the NTLM and LMv2 responses */ static BOOL test_lmv2_ntlm_broken(struct samlogon_state *samlogon_state, enum ntlm_break break_which, enum ntlmv2_domain ntlmv2_domain, char **error_string) { BOOL pass = True; NTSTATUS nt_status; DATA_BLOB ntlmv2_response = data_blob(NULL, 0); DATA_BLOB lmv2_response = data_blob(NULL, 0); DATA_BLOB lmv2_session_key = data_blob(NULL, 0); DATA_BLOB ntlmv2_session_key = data_blob(NULL, 0); DATA_BLOB names_blob = NTLMv2_generate_names_blob(samlogon_state->mem_ctx, lp_netbios_name(), lp_workgroup()); DATA_BLOB ntlm_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); DATA_BLOB ntlm_session_key = data_blob_talloc(samlogon_state->mem_ctx, NULL, 16); uint8_t lm_hash[16]; uint8_t lm_session_key[8]; uint8_t user_session_key[16]; uint8_t nt_hash[16]; SMBNTencrypt(samlogon_state->password, samlogon_state->chall.data, ntlm_response.data); E_md4hash(samlogon_state->password, nt_hash); SMBsesskeygen_ntv1(nt_hash, ntlm_session_key.data); E_deshash(samlogon_state->password, lm_hash); ZERO_STRUCT(lm_session_key); ZERO_STRUCT(user_session_key); switch (ntlmv2_domain) { case UPPER_DOMAIN: /* TODO - test with various domain cases, and without domain */ if (!SMBNTLMv2encrypt(samlogon_state->mem_ctx, samlogon_state->account_name, samlogon_state->account_domain, samlogon_state->password, &samlogon_state->chall, &names_blob, &lmv2_response, &ntlmv2_response, &lmv2_session_key, &ntlmv2_session_key)) { data_blob_free(&names_blob); return False; } break; case NO_DOMAIN: /* TODO - test with various domain cases, and without domain */ if (!SMBNTLMv2encrypt(samlogon_state->mem_ctx, samlogon_state->account_name, "", samlogon_state->password, &samlogon_state->chall, &names_blob, &lmv2_response, &ntlmv2_response, &lmv2_session_key, &ntlmv2_session_key)) { data_blob_free(&names_blob); return False; } break; } data_blob_free(&names_blob); nt_status = check_samlogon(samlogon_state, break_which, &samlogon_state->chall, &lmv2_response, &ntlm_response, lm_session_key, user_session_key, error_string); data_blob_free(&lmv2_response); data_blob_free(&ntlmv2_response); if (NT_STATUS_EQUAL(NT_STATUS_WRONG_PASSWORD, nt_status)) { return ((break_which == BREAK_NT) || (break_which == BREAK_BOTH)); } if (!NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status)) { SAFE_FREE(*error_string); asprintf(error_string, "Expected error: %s, got %s", nt_errstr(samlogon_state->expected_error), nt_errstr(nt_status)); return False; } else if (NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status) && !NT_STATUS_IS_OK(nt_status)) { return True; } else if (!NT_STATUS_IS_OK(nt_status)) { return False; } switch (break_which) { case NO_NT: if (memcmp(lmv2_session_key.data, user_session_key, sizeof(user_session_key)) != 0) { printf("USER (LMv2) Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, lmv2_session_key.data, ntlmv2_session_key.length); pass = False; } if (memcmp(lmv2_session_key.data, lm_session_key, sizeof(lm_session_key)) != 0) { printf("LM (LMv2) Session Key does not match expectations!\n"); printf("lm_session_key:\n"); dump_data(1, lm_session_key, 8); printf("expected:\n"); dump_data(1, lmv2_session_key.data, 8); pass = False; } break; case BREAK_LM: if (memcmp(ntlm_session_key.data, user_session_key, sizeof(user_session_key)) != 0) { printf("USER (NTLMv2) Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, ntlm_session_key.data, ntlm_session_key.length); pass = False; } if (memcmp(lm_hash, lm_session_key, sizeof(lm_session_key)) != 0) { printf("LM Session Key does not match expectations!\n"); printf("lm_session_key:\n"); dump_data(1, lm_session_key, 8); printf("expected:\n"); dump_data(1, lm_hash, 8); pass = False; } break; default: if (memcmp(ntlm_session_key.data, user_session_key, sizeof(user_session_key)) != 0) { printf("USER (NTLMv2) Session Key does not match expectations!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, 16); printf("expected:\n"); dump_data(1, ntlm_session_key.data, ntlm_session_key.length); pass = False; } if (memcmp(ntlm_session_key.data, lm_session_key, sizeof(lm_session_key)) != 0) { printf("LM (NTLMv2) Session Key does not match expectations!\n"); printf("lm_session_key:\n"); dump_data(1, lm_session_key, 8); printf("expected:\n"); dump_data(1, ntlm_session_key.data, 8); pass = False; } } return pass; } /* * Test the NTLMv2 and LMv2 responses */ static BOOL test_lmv2_ntlmv2(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_NONE, UPPER_DOMAIN, error_string); } #if 0 static BOOL test_lmv2_ntlmv2_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_NONE, NO_DOMAIN, error_string); } #endif /* * Test the LMv2 response only */ static BOOL test_lmv2(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, NO_NT, UPPER_DOMAIN, error_string); } static BOOL test_lmv2_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, NO_NT, NO_DOMAIN, error_string); } /* * Test the NTLMv2 response only */ static BOOL test_ntlmv2(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, NO_LM, UPPER_DOMAIN, error_string); } static BOOL test_ntlmv2_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, NO_LM, NO_DOMAIN, error_string); } static BOOL test_lm_ntlm(struct samlogon_state *samlogon_state, char **error_string) { return test_lm_ntlm_broken(samlogon_state, BREAK_NONE, error_string); } static BOOL test_ntlm_lm_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lm_ntlm_broken(samlogon_state, BREAK_LM, error_string); } static BOOL test_ntlm_ntlm_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lm_ntlm_broken(samlogon_state, BREAK_NT, error_string); } static BOOL test_lm_ntlm_both_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lm_ntlm_broken(samlogon_state, BREAK_BOTH, error_string); } static BOOL test_ntlmv2_lmv2_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_LM, UPPER_DOMAIN, error_string); } static BOOL test_ntlmv2_lmv2_broken_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_LM, NO_DOMAIN, error_string); } static BOOL test_ntlmv2_ntlmv2_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_NT, UPPER_DOMAIN, error_string); } #if 0 static BOOL test_ntlmv2_ntlmv2_broken_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_NT, NO_DOMAIN, error_string); } #endif static BOOL test_ntlmv2_both_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_BOTH, UPPER_DOMAIN, error_string); } static BOOL test_ntlmv2_both_broken_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlmv2_broken(samlogon_state, BREAK_BOTH, NO_DOMAIN, error_string); } static BOOL test_lmv2_ntlm_both_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlm_broken(samlogon_state, BREAK_BOTH, UPPER_DOMAIN, error_string); } static BOOL test_lmv2_ntlm_both_broken_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlm_broken(samlogon_state, BREAK_BOTH, NO_DOMAIN, error_string); } static BOOL test_lmv2_ntlm_break_ntlm(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlm_broken(samlogon_state, BREAK_NT, UPPER_DOMAIN, error_string); } static BOOL test_lmv2_ntlm_break_ntlm_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlm_broken(samlogon_state, BREAK_NT, NO_DOMAIN, error_string); } static BOOL test_lmv2_ntlm_break_lm(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlm_broken(samlogon_state, BREAK_LM, UPPER_DOMAIN, error_string); } static BOOL test_lmv2_ntlm_break_lm_no_dom(struct samlogon_state *samlogon_state, char **error_string) { return test_lmv2_ntlm_broken(samlogon_state, BREAK_LM, NO_DOMAIN, error_string); } /* * Test the NTLM2 response (extra challenge in LM feild) * * This test is the same as the 'break LM' test, but checks that the * server implements NTLM2 session security in the right place * (NETLOGON is the wrong place). */ static BOOL test_ntlm2(struct samlogon_state *samlogon_state, char **error_string) { BOOL pass = True; NTSTATUS nt_status; DATA_BLOB lm_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); DATA_BLOB nt_response = data_blob_talloc(samlogon_state->mem_ctx, NULL, 24); uint8_t lm_key[8]; uint8_t nt_hash[16]; uint8_t lm_hash[16]; uint8_t nt_key[16]; uint8_t user_session_key[16]; uint8_t expected_user_session_key[16]; uint8_t session_nonce_hash[16]; uint8_t client_chall[8]; struct MD5Context md5_session_nonce_ctx; HMACMD5Context hmac_ctx; ZERO_STRUCT(user_session_key); ZERO_STRUCT(lm_key); generate_random_buffer(client_chall, 8); MD5Init(&md5_session_nonce_ctx); MD5Update(&md5_session_nonce_ctx, samlogon_state->chall.data, 8); MD5Update(&md5_session_nonce_ctx, client_chall, 8); MD5Final(session_nonce_hash, &md5_session_nonce_ctx); E_md4hash(samlogon_state->password, (uint8_t *)nt_hash); E_deshash(samlogon_state->password, (uint8_t *)lm_hash); SMBsesskeygen_ntv1((const uint8_t *)nt_hash, nt_key); SMBNTencrypt(samlogon_state->password, samlogon_state->chall.data, nt_response.data); memcpy(lm_response.data, session_nonce_hash, 8); memset(lm_response.data + 8, 0, 16); hmac_md5_init_rfc2104(nt_key, 16, &hmac_ctx); hmac_md5_update(samlogon_state->chall.data, 8, &hmac_ctx); hmac_md5_update(client_chall, 8, &hmac_ctx); hmac_md5_final(expected_user_session_key, &hmac_ctx); nt_status = check_samlogon(samlogon_state, BREAK_NONE, &samlogon_state->chall, &lm_response, &nt_response, lm_key, user_session_key, error_string); if (!NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status)) { SAFE_FREE(*error_string); asprintf(error_string, "Expected error: %s, got %s", nt_errstr(samlogon_state->expected_error), nt_errstr(nt_status)); return False; } else if (NT_STATUS_EQUAL(samlogon_state->expected_error, nt_status) && !NT_STATUS_IS_OK(nt_status)) { return True; } else if (!NT_STATUS_IS_OK(nt_status)) { return False; } if (memcmp(lm_hash, lm_key, sizeof(lm_key)) != 0) { printf("LM Key does not match expectations!\n"); printf("lm_key:\n"); dump_data(1, lm_key, 8); printf("expected:\n"); dump_data(1, lm_hash, 8); pass = False; } if (memcmp(nt_key, user_session_key, 16) != 0) { printf("NT Session Key does not match expectations (should be first-8 LM hash)!\n"); printf("user_session_key:\n"); dump_data(1, user_session_key, sizeof(user_session_key)); printf("expected:\n"); dump_data(1, nt_key, sizeof(nt_key)); pass = False; } return pass; } static BOOL test_plaintext(struct samlogon_state *samlogon_state, enum ntlm_break break_which, char **error_string) { NTSTATUS nt_status; DATA_BLOB nt_response = data_blob(NULL, 0); DATA_BLOB lm_response = data_blob(NULL, 0); char *password; char *dospw; void *unicodepw; uint8_t user_session_key[16]; uint8_t lm_key[16]; static const uint8_t zeros[8]; DATA_BLOB chall = data_blob_talloc(samlogon_state->mem_ctx, zeros, sizeof(zeros)); ZERO_STRUCT(user_session_key); if ((push_ucs2_talloc(samlogon_state->mem_ctx, &unicodepw, samlogon_state->password)) == -1) { DEBUG(0, ("push_ucs2_allocate failed!\n")); exit(1); } nt_response = data_blob_talloc(samlogon_state->mem_ctx, unicodepw, strlen_m(samlogon_state->password)*2); password = strupper_talloc(samlogon_state->mem_ctx, samlogon_state->password); if ((convert_string_talloc(samlogon_state->mem_ctx, CH_UNIX, CH_DOS, password, strlen(password)+1, (void**)&dospw)) == -1) { DEBUG(0, ("convert_string_talloc failed!\n")); exit(1); } lm_response = data_blob_talloc(samlogon_state->mem_ctx, dospw, strlen(dospw)); nt_status = check_samlogon(samlogon_state, break_which, &chall, &lm_response, &nt_response, lm_key, user_session_key, error_string); if (!NT_STATUS_IS_OK(nt_status)) { return break_which == BREAK_NT; } return True; } static BOOL test_plaintext_none_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_plaintext(samlogon_state, BREAK_NONE, error_string); } static BOOL test_plaintext_lm_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_plaintext(samlogon_state, BREAK_LM, error_string); } static BOOL test_plaintext_nt_broken(struct samlogon_state *samlogon_state, char **error_string) { return test_plaintext(samlogon_state, BREAK_NT, error_string); } static BOOL test_plaintext_nt_only(struct samlogon_state *samlogon_state, char **error_string) { return test_plaintext(samlogon_state, NO_LM, error_string); } static BOOL test_plaintext_lm_only(struct samlogon_state *samlogon_state, char **error_string) { return test_plaintext(samlogon_state, NO_NT, error_string); } /* Tests: - LM only - NT and LM - NT - NT in LM field - NT in both fields - NTLMv2 - NTLMv2 and LMv2 - LMv2 - plaintext tests (in challenge-response fields) check we get the correct session key in each case check what values we get for the LM session key */ static const struct ntlm_tests { BOOL (*fn)(struct samlogon_state *, char **); const char *name; BOOL expect_fail; } test_table[] = { {test_lmv2_ntlmv2, "NTLMv2 and LMv2", False}, #if 0 {test_lmv2_ntlmv2_no_dom, "NTLMv2 and LMv2 (no domain)", False}, #endif {test_lm, "LM", False}, {test_lm_ntlm, "LM and NTLM", False}, {test_lm_ntlm_both_broken, "LM and NTLM, both broken", False}, {test_ntlm, "NTLM", False}, {test_ntlm_in_lm, "NTLM in LM", False}, {test_ntlm_in_both, "NTLM in both", False}, {test_ntlmv2, "NTLMv2", False}, {test_ntlmv2_no_dom, "NTLMv2 (no domain)", False}, {test_lmv2, "LMv2", False}, {test_lmv2_no_dom, "LMv2 (no domain)", False}, {test_ntlmv2_lmv2_broken, "NTLMv2 and LMv2, LMv2 broken", False}, {test_ntlmv2_lmv2_broken_no_dom, "NTLMv2 and LMv2, LMv2 broken (no domain)", False}, {test_ntlmv2_ntlmv2_broken, "NTLMv2 and LMv2, NTLMv2 broken", False}, #if 0 {test_ntlmv2_ntlmv2_broken_no_dom, "NTLMv2 and LMv2, NTLMv2 broken (no domain)", False}, #endif {test_ntlmv2_both_broken, "NTLMv2 and LMv2, both broken", False}, {test_ntlmv2_both_broken_no_dom, "NTLMv2 and LMv2, both broken (no domain)", False}, {test_ntlm_lm_broken, "NTLM and LM, LM broken", False}, {test_ntlm_ntlm_broken, "NTLM and LM, NTLM broken", False}, {test_ntlm2, "NTLM2 (NTLMv2 session security)", False}, {test_lmv2_ntlm_both_broken, "LMv2 and NTLM, both broken", False}, {test_lmv2_ntlm_both_broken_no_dom, "LMv2 and NTLM, both broken (no domain)", False}, {test_lmv2_ntlm_break_ntlm, "LMv2 and NTLM, NTLM broken", False}, {test_lmv2_ntlm_break_ntlm_no_dom, "LMv2 and NTLM, NTLM broken (no domain)", False}, {test_lmv2_ntlm_break_lm, "LMv2 and NTLM, LMv2 broken", False}, {test_lmv2_ntlm_break_lm_no_dom, "LMv2 and NTLM, LMv2 broken (no domain)", False}, {test_plaintext_none_broken, "Plaintext", True}, {test_plaintext_lm_broken, "Plaintext LM broken", True}, {test_plaintext_nt_broken, "Plaintext NT broken", True}, {test_plaintext_nt_only, "Plaintext NT only", True}, {test_plaintext_lm_only, "Plaintext LM only", True}, {NULL, NULL} }; /* try a netlogon SamLogon */ static BOOL test_SamLogon(struct dcerpc_pipe *p, TALLOC_CTX *mem_ctx, struct creds_CredentialState *creds, const char *account_domain, const char *account_name, const char *plain_pass, NTSTATUS expected_error, int n_subtests) { TALLOC_CTX *fn_ctx = talloc_named(mem_ctx, 0, "test_SamLogon function-level context"); int i, v, l, f; BOOL ret = True; int validation_levels[] = {2,3,6}; int logon_levels[] = { 2, 6 }; int function_levels[] = { DCERPC_NETR_LOGONSAMLOGON, DCERPC_NETR_LOGONSAMLOGONEX, DCERPC_NETR_LOGONSAMLOGONWITHFLAGS }; struct samlogon_state samlogon_state; printf("testing netr_LogonSamLogon and netr_LogonSamLogonWithFlags\n"); samlogon_state.account_name = account_name; samlogon_state.account_domain = account_domain; samlogon_state.password = plain_pass; samlogon_state.p = p; samlogon_state.creds = creds; samlogon_state.expected_error = expected_error; samlogon_state.chall = data_blob_talloc(fn_ctx, NULL, 8); generate_random_buffer(samlogon_state.chall.data, 8); samlogon_state.r_flags.in.server_name = talloc_asprintf(fn_ctx, "\\\\%s", dcerpc_server_name(p)); samlogon_state.r_flags.in.workstation = TEST_MACHINE_NAME; samlogon_state.r_flags.in.credential = &samlogon_state.auth; samlogon_state.r_flags.in.return_authenticator = &samlogon_state.auth2; samlogon_state.r_flags.in.flags = 0; samlogon_state.r_ex.in.server_name = talloc_asprintf(fn_ctx, "\\\\%s", dcerpc_server_name(p)); samlogon_state.r_ex.in.workstation = TEST_MACHINE_NAME; samlogon_state.r_ex.in.flags = 0; samlogon_state.r.in.server_name = talloc_asprintf(fn_ctx, "\\\\%s", dcerpc_server_name(p)); samlogon_state.r.in.workstation = TEST_MACHINE_NAME; samlogon_state.r.in.credential = &samlogon_state.auth; samlogon_state.r.in.return_authenticator = &samlogon_state.auth2; for (f=0;f n_subtests)) { continue; } for (v=0;vnegotiate_flags & NETLOGON_NEG_ARCFOUR) { creds_arcfour_crypt(creds, pinfo.lmpassword.hash, 16); creds_arcfour_crypt(creds, pinfo.ntpassword.hash, 16); } else { creds_des_encrypt(creds, &pinfo.lmpassword); creds_des_encrypt(creds, &pinfo.ntpassword); } printf("Testing netr_LogonSamLogonWithFlags (Interactive Logon)\n"); status = dcerpc_netr_LogonSamLogonWithFlags(p, fn_ctx, &r); if (!r.out.return_authenticator || !creds_client_check(creds, &r.out.return_authenticator->cred)) { printf("Credential chaining failed\n"); talloc_free(fn_ctx); return False; } talloc_free(fn_ctx); if (!NT_STATUS_EQUAL(expected_error, status)) { printf("[%s]\\[%s] netr_LogonSamLogonWithFlags - expected %s got %s\n", account_domain, account_name, nt_errstr(expected_error), nt_errstr(status)); return False; } return True; } BOOL torture_rpc_samlogon(void) { NTSTATUS status; struct dcerpc_pipe *p; struct dcerpc_binding *b; struct cli_credentials *machine_credentials; TALLOC_CTX *mem_ctx = talloc_init("torture_rpc_netlogon"); BOOL ret = True; struct test_join *join_ctx; struct test_join *user_ctx; const char *user_password; char *test_machine_account; const char *binding = lp_parm_string(-1, "torture", "binding"); const char *userdomain; int i; int ci; unsigned int credential_flags[] = { NETLOGON_NEG_AUTH2_FLAGS, NETLOGON_NEG_ARCFOUR, NETLOGON_NEG_ARCFOUR | NETLOGON_NEG_128BIT, NETLOGON_NEG_AUTH2_ADS_FLAGS, 0 /* yes, this is a valid flag, causes the use of DES */ }; struct creds_CredentialState *creds; test_machine_account = talloc_asprintf(mem_ctx, "%s$", TEST_MACHINE_NAME); /* We only need to join as a workstation here, and in future, * if we wish to test against trusted domains, we must be a * workstation here */ join_ctx = torture_join_domain(TEST_MACHINE_NAME, ACB_WSTRUST, &machine_credentials); if (!join_ctx) { printf("Failed to join as Workstation\n"); return False; } userdomain = lp_parm_string(-1, "torture", "userdomain"); if (!userdomain) { userdomain = lp_workgroup(); } user_ctx = torture_create_testuser(TEST_USER_NAME, userdomain, ACB_NORMAL, &user_password); if (!user_ctx) { printf("Failed to join as Workstation\n"); return False; } status = dcerpc_parse_binding(mem_ctx, binding, &b); if (!NT_STATUS_IS_OK(status)) { printf("Bad binding string %s\n", binding); ret = False; goto failed; } /* We have to use schannel, otherwise the SamLogonEx fails * with INTERNAL_ERROR */ b->flags &= ~DCERPC_AUTH_OPTIONS; b->flags |= DCERPC_SCHANNEL | DCERPC_SIGN | DCERPC_SCHANNEL_128; status = dcerpc_pipe_connect_b(mem_ctx, &p, b, DCERPC_NETLOGON_UUID, DCERPC_NETLOGON_VERSION, machine_credentials, NULL); if (!NT_STATUS_IS_OK(status)) { printf("RPC pipe connect as domain member failed: %s\n", nt_errstr(status)); ret = False; goto failed; } status = dcerpc_schannel_creds(p->conn->security_state.generic_state, mem_ctx, &creds); if (!NT_STATUS_IS_OK(status)) { ret = False; goto failed; } { struct { const char *domain; const char *username; const char *password; BOOL network_login; NTSTATUS expected_interactive_error; NTSTATUS expected_network_error; } usercreds[] = { { cli_credentials_get_domain(cmdline_credentials), cli_credentials_get_username(cmdline_credentials), cli_credentials_get_password(cmdline_credentials), True, NT_STATUS_OK, NT_STATUS_OK }, { cli_credentials_get_realm(cmdline_credentials), cli_credentials_get_username(cmdline_credentials), cli_credentials_get_password(cmdline_credentials), True, NT_STATUS_OK, NT_STATUS_OK }, { NULL, talloc_asprintf(mem_ctx, "%s@%s", cli_credentials_get_username(cmdline_credentials), cli_credentials_get_domain(cmdline_credentials) ), cli_credentials_get_password(cmdline_credentials), False, NT_STATUS_OK, NT_STATUS_OK }, { NULL, talloc_asprintf(mem_ctx, "%s@%s", cli_credentials_get_username(cmdline_credentials), cli_credentials_get_realm(cmdline_credentials) ), cli_credentials_get_password(cmdline_credentials), True, NT_STATUS_OK, NT_STATUS_OK }, { cli_credentials_get_domain(machine_credentials), cli_credentials_get_username(machine_credentials), cli_credentials_get_password(machine_credentials), True, NT_STATUS_NO_SUCH_USER, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT }, { cli_credentials_get_realm(machine_credentials), cli_credentials_get_username(machine_credentials), cli_credentials_get_password(machine_credentials), True, NT_STATUS_NO_SUCH_USER, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT }, { NULL, talloc_asprintf(mem_ctx, "%s@%s", cli_credentials_get_username(machine_credentials), cli_credentials_get_domain(machine_credentials) ), cli_credentials_get_password(machine_credentials), False, NT_STATUS_NO_SUCH_USER, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT }, { NULL, talloc_asprintf(mem_ctx, "%s@%s", cli_credentials_get_username(machine_credentials), cli_credentials_get_realm(machine_credentials) ), cli_credentials_get_password(machine_credentials), True, NT_STATUS_NO_SUCH_USER, NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT }, { userdomain, TEST_USER_NAME, user_password, True, NT_STATUS_OK, NT_STATUS_OK }, { NULL, talloc_asprintf(mem_ctx, "%s@%s", TEST_USER_NAME, lp_realm()), user_password, True, NT_STATUS_OK, NT_STATUS_OK }, { NULL, talloc_asprintf(mem_ctx, "%s@%s", TEST_USER_NAME, userdomain), user_password, False, NT_STATUS_OK, NT_STATUS_OK } }; /* Try all the tests for different username forms */ for (ci = 0; ci < ARRAY_SIZE(usercreds); ci++) { if (!test_InteractiveLogon(p, mem_ctx, creds, TEST_MACHINE_NAME, usercreds[ci].domain, usercreds[ci].username, usercreds[ci].password, usercreds[ci].expected_interactive_error)) { ret = False; } if (usercreds[ci].network_login) { if (!test_SamLogon(p, mem_ctx, creds, usercreds[ci].domain, usercreds[ci].username, usercreds[ci].password, usercreds[ci].expected_network_error, 0)) { ret = False; } } } /* Using the first username form, try the different * credentials flag setups, on only one of the tests (checks * session key encryption) */ for (i=0; i < ARRAY_SIZE(credential_flags); i++) { if (!test_InteractiveLogon(p, mem_ctx, creds, TEST_MACHINE_NAME, usercreds[0].domain, usercreds[0].username, usercreds[0].password, usercreds[0].expected_interactive_error)) { ret = False; } if (usercreds[ci].network_login) { if (!test_SamLogon(p, mem_ctx, creds, usercreds[0].domain, usercreds[0].username, usercreds[0].password, usercreds[0].expected_network_error, 1)) { ret = False; } } } } failed: talloc_free(mem_ctx); torture_leave_domain(join_ctx); torture_leave_domain(user_ctx); return ret; }