X-Git-Url: http://git.maemo.org/git/?a=blobdiff_plain;ds=inline;f=source%2Futils%2Fntlm_auth_diagnostics.c;fp=source%2Futils%2Fntlm_auth_diagnostics.c;h=95f1355c2eb62567663b6af2d1d68eca99d5e0fb;hb=6bca4ca307d55b6dc888e56cee47aebcddbce786;hp=0000000000000000000000000000000000000000;hpb=7fd70fa738b636089bcc6c961aa3eaa02f20dda2;p=samba diff --git a/source/utils/ntlm_auth_diagnostics.c b/source/utils/ntlm_auth_diagnostics.c new file mode 100644 index 0000000..95f1355 --- /dev/null +++ b/source/utils/ntlm_auth_diagnostics.c @@ -0,0 +1,601 @@ +/* + Unix SMB/CIFS implementation. + + Winbind status program. + + Copyright (C) Tim Potter 2000-2003 + Copyright (C) Andrew Bartlett 2003-2004 + Copyright (C) Francesco Chemolli 2000 + + 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 "utils/ntlm_auth.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_WINBIND + +enum ntlm_break { + BREAK_NONE, + BREAK_LM, + BREAK_NT, + NO_LM, + NO_NT +}; + +/* + Authenticate a user with a challenge/response, checking session key + and valid authentication types +*/ + +/* + * Test the normal 'LM and NTLM' combination + */ + +static BOOL test_lm_ntlm_broken(enum ntlm_break break_which) +{ + BOOL pass = True; + NTSTATUS nt_status; + uint32 flags = 0; + DATA_BLOB lm_response = data_blob(NULL, 24); + DATA_BLOB nt_response = data_blob(NULL, 24); + DATA_BLOB session_key = data_blob(NULL, 16); + + uchar lm_key[8]; + uchar user_session_key[16]; + uchar lm_hash[16]; + uchar nt_hash[16]; + DATA_BLOB chall = get_challenge(); + char *error_string; + + ZERO_STRUCT(lm_key); + ZERO_STRUCT(user_session_key); + + flags |= WBFLAG_PAM_LMKEY; + flags |= WBFLAG_PAM_USER_SESSION_KEY; + + SMBencrypt(opt_password,chall.data,lm_response.data); + E_deshash(opt_password, lm_hash); + + SMBNTencrypt(opt_password,chall.data,nt_response.data); + + E_md4hash(opt_password, nt_hash); + SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data); + + switch (break_which) { + case BREAK_NONE: + break; + case BREAK_LM: + lm_response.data[0]++; + break; + case BREAK_NT: + nt_response.data[0]++; + break; + case NO_LM: + data_blob_free(&lm_response); + break; + case NO_NT: + data_blob_free(&nt_response); + break; + } + + nt_status = contact_winbind_auth_crap(opt_username, opt_domain, + opt_workstation, + &chall, + &lm_response, + &nt_response, + flags, + lm_key, + user_session_key, + &error_string, NULL); + + data_blob_free(&lm_response); + + if (!NT_STATUS_IS_OK(nt_status)) { + d_printf("%s (0x%x)\n", + error_string, + NT_STATUS_V(nt_status)); + SAFE_FREE(error_string); + return break_which == BREAK_NT; + } + + if (memcmp(lm_hash, lm_key, + sizeof(lm_key)) != 0) { + DEBUG(1, ("LM Key does not match expectations!\n")); + DEBUG(1, ("lm_key:\n")); + dump_data(1, (const char *)lm_key, 8); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)lm_hash, 8); + pass = False; + } + + if (break_which == NO_NT) { + if (memcmp(lm_hash, user_session_key, + 8) != 0) { + DEBUG(1, ("NT Session Key does not match expectations (should be LM hash)!\n")); + DEBUG(1, ("user_session_key:\n")); + dump_data(1, (const char *)user_session_key, sizeof(user_session_key)); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)lm_hash, sizeof(lm_hash)); + pass = False; + } + } else { + if (memcmp(session_key.data, user_session_key, + sizeof(user_session_key)) != 0) { + DEBUG(1, ("NT Session Key does not match expectations!\n")); + DEBUG(1, ("user_session_key:\n")); + dump_data(1, (const char *)user_session_key, 16); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)session_key.data, session_key.length); + pass = False; + } + } + return pass; +} + +/* + * Test LM authentication, no NT response supplied + */ + +static BOOL test_lm(void) +{ + + return test_lm_ntlm_broken(NO_NT); +} + +/* + * Test the NTLM response only, no LM. + */ + +static BOOL test_ntlm(void) +{ + return test_lm_ntlm_broken(NO_LM); +} + +/* + * Test the NTLM response only, but in the LM field. + */ + +static BOOL test_ntlm_in_lm(void) +{ + BOOL pass = True; + NTSTATUS nt_status; + uint32 flags = 0; + DATA_BLOB nt_response = data_blob(NULL, 24); + + uchar lm_key[8]; + uchar lm_hash[16]; + uchar user_session_key[16]; + DATA_BLOB chall = get_challenge(); + char *error_string; + + ZERO_STRUCT(user_session_key); + + flags |= WBFLAG_PAM_LMKEY; + flags |= WBFLAG_PAM_USER_SESSION_KEY; + + SMBNTencrypt(opt_password,chall.data,nt_response.data); + + E_deshash(opt_password, lm_hash); + + nt_status = contact_winbind_auth_crap(opt_username, opt_domain, + opt_workstation, + &chall, + &nt_response, + NULL, + flags, + lm_key, + user_session_key, + &error_string, NULL); + + data_blob_free(&nt_response); + + if (!NT_STATUS_IS_OK(nt_status)) { + d_printf("%s (0x%x)\n", + error_string, + NT_STATUS_V(nt_status)); + SAFE_FREE(error_string); + return False; + } + + if (memcmp(lm_hash, lm_key, + sizeof(lm_key)) != 0) { + DEBUG(1, ("LM Key does not match expectations!\n")); + DEBUG(1, ("lm_key:\n")); + dump_data(1, (const char *)lm_key, 8); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)lm_hash, 8); + pass = False; + } + if (memcmp(lm_hash, user_session_key, 8) != 0) { + DEBUG(1, ("Session Key (first 8 lm hash) does not match expectations!\n")); + DEBUG(1, ("user_session_key:\n")); + dump_data(1, (const char *)user_session_key, 16); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)lm_hash, 8); + pass = False; + } + return pass; +} + +/* + * Test the NTLM response only, but in the both the NT and LM fields. + */ + +static BOOL test_ntlm_in_both(void) +{ + BOOL pass = True; + NTSTATUS nt_status; + uint32 flags = 0; + DATA_BLOB nt_response = data_blob(NULL, 24); + DATA_BLOB session_key = data_blob(NULL, 16); + + char lm_key[8]; + char lm_hash[16]; + char user_session_key[16]; + char nt_hash[16]; + DATA_BLOB chall = get_challenge(); + char *error_string; + + ZERO_STRUCT(lm_key); + ZERO_STRUCT(user_session_key); + + flags |= WBFLAG_PAM_LMKEY; + flags |= WBFLAG_PAM_USER_SESSION_KEY; + + SMBNTencrypt(opt_password,chall.data,nt_response.data); + E_md4hash(opt_password, (unsigned char *)nt_hash); + SMBsesskeygen_ntv1((const unsigned char *)nt_hash, NULL, session_key.data); + + E_deshash(opt_password, (unsigned char *)lm_hash); + + nt_status = contact_winbind_auth_crap(opt_username, opt_domain, + opt_workstation, + &chall, + &nt_response, + &nt_response, + flags, + (unsigned char *)lm_key, + (unsigned char *)user_session_key, + &error_string, NULL); + + data_blob_free(&nt_response); + + if (!NT_STATUS_IS_OK(nt_status)) { + d_printf("%s (0x%x)\n", + error_string, + NT_STATUS_V(nt_status)); + SAFE_FREE(error_string); + return False; + } + + if (memcmp(lm_hash, lm_key, + sizeof(lm_key)) != 0) { + DEBUG(1, ("LM Key does not match expectations!\n")); + DEBUG(1, ("lm_key:\n")); + dump_data(1, lm_key, 8); + DEBUG(1, ("expected:\n")); + dump_data(1, lm_hash, 8); + pass = False; + } + if (memcmp(session_key.data, user_session_key, + sizeof(user_session_key)) != 0) { + DEBUG(1, ("NT Session Key does not match expectations!\n")); + DEBUG(1, ("user_session_key:\n")); + dump_data(1, user_session_key, 16); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)session_key.data, session_key.length); + pass = False; + } + + + return pass; +} + +/* + * Test the NTLMv2 and LMv2 responses + */ + +static BOOL test_lmv2_ntlmv2_broken(enum ntlm_break break_which) +{ + BOOL pass = True; + NTSTATUS nt_status; + uint32 flags = 0; + DATA_BLOB ntlmv2_response = data_blob(NULL, 0); + DATA_BLOB lmv2_response = data_blob(NULL, 0); + DATA_BLOB ntlmv2_session_key = data_blob(NULL, 0); + DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain()); + + uchar user_session_key[16]; + DATA_BLOB chall = get_challenge(); + char *error_string; + + ZERO_STRUCT(user_session_key); + + flags |= WBFLAG_PAM_USER_SESSION_KEY; + + if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall, + &names_blob, + &lmv2_response, &ntlmv2_response, + &ntlmv2_session_key)) { + data_blob_free(&names_blob); + return False; + } + data_blob_free(&names_blob); + + switch (break_which) { + case BREAK_NONE: + break; + case BREAK_LM: + lmv2_response.data[0]++; + break; + case BREAK_NT: + ntlmv2_response.data[0]++; + break; + case NO_LM: + data_blob_free(&lmv2_response); + break; + case NO_NT: + data_blob_free(&ntlmv2_response); + break; + } + + nt_status = contact_winbind_auth_crap(opt_username, opt_domain, + opt_workstation, + &chall, + &lmv2_response, + &ntlmv2_response, + flags, + NULL, + user_session_key, + &error_string, NULL); + + data_blob_free(&lmv2_response); + data_blob_free(&ntlmv2_response); + + if (!NT_STATUS_IS_OK(nt_status)) { + d_printf("%s (0x%x)\n", + error_string, + NT_STATUS_V(nt_status)); + SAFE_FREE(error_string); + return break_which == BREAK_NT; + } + + if (break_which != NO_NT && break_which != BREAK_NT && memcmp(ntlmv2_session_key.data, user_session_key, + sizeof(user_session_key)) != 0) { + DEBUG(1, ("USER (NTLMv2) Session Key does not match expectations!\n")); + DEBUG(1, ("user_session_key:\n")); + dump_data(1, (const char *)user_session_key, 16); + DEBUG(1, ("expected:\n")); + dump_data(1, (const char *)ntlmv2_session_key.data, ntlmv2_session_key.length); + pass = False; + } + return pass; +} + +/* + * Test the NTLMv2 and LMv2 responses + */ + +static BOOL test_lmv2_ntlmv2(void) +{ + return test_lmv2_ntlmv2_broken(BREAK_NONE); +} + +/* + * Test the LMv2 response only + */ + +static BOOL test_lmv2(void) +{ + return test_lmv2_ntlmv2_broken(NO_NT); +} + +/* + * Test the NTLMv2 response only + */ + +static BOOL test_ntlmv2(void) +{ + return test_lmv2_ntlmv2_broken(NO_LM); +} + +static BOOL test_lm_ntlm(void) +{ + return test_lm_ntlm_broken(BREAK_NONE); +} + +static BOOL test_ntlm_lm_broken(void) +{ + return test_lm_ntlm_broken(BREAK_LM); +} + +static BOOL test_ntlm_ntlm_broken(void) +{ + return test_lm_ntlm_broken(BREAK_NT); +} + +static BOOL test_ntlmv2_lmv2_broken(void) +{ + return test_lmv2_ntlmv2_broken(BREAK_LM); +} + +static BOOL test_ntlmv2_ntlmv2_broken(void) +{ + return test_lmv2_ntlmv2_broken(BREAK_NT); +} + +static BOOL test_plaintext(enum ntlm_break break_which) +{ + NTSTATUS nt_status; + uint32 flags = 0; + DATA_BLOB nt_response = data_blob(NULL, 0); + DATA_BLOB lm_response = data_blob(NULL, 0); + char *password; + + uchar user_session_key[16]; + uchar lm_key[16]; + static const uchar zeros[8]; + DATA_BLOB chall = data_blob(zeros, sizeof(zeros)); + char *error_string; + + ZERO_STRUCT(user_session_key); + + flags |= WBFLAG_PAM_LMKEY; + flags |= WBFLAG_PAM_USER_SESSION_KEY; + + if ((push_ucs2_allocate((smb_ucs2_t **)&nt_response.data, opt_password)) == -1) { + DEBUG(0, ("push_ucs2_allocate failed!\n")); + exit(1); + } + + nt_response.length = strlen_w(((void *)nt_response.data))*sizeof(smb_ucs2_t); + + password = strdup_upper(opt_password); + + if ((convert_string_allocate(NULL, CH_UNIX, + CH_DOS, password, + strlen(password)+1, + (void**)&lm_response.data,True)) == -1) { + DEBUG(0, ("push_ascii_allocate failed!\n")); + exit(1); + } + + SAFE_FREE(password); + + lm_response.length = strlen((const char *)lm_response.data); + + switch (break_which) { + case BREAK_NONE: + break; + case BREAK_LM: + lm_response.data[0]++; + break; + case BREAK_NT: + nt_response.data[0]++; + break; + case NO_LM: + SAFE_FREE(lm_response.data); + lm_response.length = 0; + break; + case NO_NT: + SAFE_FREE(nt_response.data); + nt_response.length = 0; + break; + } + + nt_status = contact_winbind_auth_crap(opt_username, opt_domain, + opt_workstation, + &chall, + &lm_response, + &nt_response, + flags, + lm_key, + user_session_key, + &error_string, NULL); + + SAFE_FREE(nt_response.data); + SAFE_FREE(lm_response.data); + data_blob_free(&chall); + + if (!NT_STATUS_IS_OK(nt_status)) { + d_printf("%s (0x%x)\n", + error_string, + NT_STATUS_V(nt_status)); + SAFE_FREE(error_string); + return break_which == BREAK_NT; + } + + return break_which != BREAK_NT; +} + +static BOOL test_plaintext_none_broken(void) { + return test_plaintext(BREAK_NONE); +} + +static BOOL test_plaintext_lm_broken(void) { + return test_plaintext(BREAK_LM); +} + +static BOOL test_plaintext_nt_broken(void) { + return test_plaintext(BREAK_NT); +} + +static BOOL test_plaintext_nt_only(void) { + return test_plaintext(NO_LM); +} + +static BOOL test_plaintext_lm_only(void) { + return test_plaintext(NO_NT); +} + +/* + 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 feilds) + + 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)(void); + const char *name; +} test_table[] = { + {test_lm, "LM"}, + {test_lm_ntlm, "LM and NTLM"}, + {test_ntlm, "NTLM"}, + {test_ntlm_in_lm, "NTLM in LM"}, + {test_ntlm_in_both, "NTLM in both"}, + {test_ntlmv2, "NTLMv2"}, + {test_lmv2_ntlmv2, "NTLMv2 and LMv2"}, + {test_lmv2, "LMv2"}, + {test_ntlmv2_lmv2_broken, "NTLMv2 and LMv2, LMv2 broken"}, + {test_ntlmv2_ntlmv2_broken, "NTLMv2 and LMv2, NTLMv2 broken"}, + {test_ntlm_lm_broken, "NTLM and LM, LM broken"}, + {test_ntlm_ntlm_broken, "NTLM and LM, NTLM broken"}, + {test_plaintext_none_broken, "Plaintext"}, + {test_plaintext_lm_broken, "Plaintext LM broken"}, + {test_plaintext_nt_broken, "Plaintext NT broken"}, + {test_plaintext_nt_only, "Plaintext NT only"}, + {test_plaintext_lm_only, "Plaintext LM only"}, + {NULL, NULL} +}; + +BOOL diagnose_ntlm_auth(void) +{ + unsigned int i; + BOOL pass = True; + + for (i=0; test_table[i].fn; i++) { + if (!test_table[i].fn()) { + DEBUG(1, ("Test %s failed!\n", test_table[i].name)); + pass = False; + } + } + + return pass; +} +