r177: Split ntlm_auth --diagnostics into a seperate file, so as not to clutter

the main ntlm_auth program.

It quite possibly should belong in smbtorture, but relies on the
winbind client for now.

Andrew Bartlett
(This used to be commit 6e1b7a8848062a184ee293cf688135b851f2bd8d)

1 files changed, 600 insertions, 0 deletions

diff --git a/source3/utils/ntlm_auth_diagnostics.c b/source3/utils/ntlm_auth_diagnostics.c
new file mode 100644
index 00000000000..40c627588de
--- /dev/null
+++ b/source3/utils/ntlm_auth_diagnostics.c
@@ -0,0 +1,600 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Winbind status program.
+
+   Copyright (C) Tim Potter      2000-2003
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
+   Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 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(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"}
+};
+
+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;
+}
+