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-rw-r--r--source3/utils/ntlm_auth.c528
1 files changed, 417 insertions, 111 deletions
diff --git a/source3/utils/ntlm_auth.c b/source3/utils/ntlm_auth.c
index d924f92cce..243700cedd 100644
--- a/source3/utils/ntlm_auth.c
+++ b/source3/utils/ntlm_auth.c
@@ -4,7 +4,7 @@
Winbind status program.
Copyright (C) Tim Potter 2000-2002
- Copyright (C) Andrew Bartlett 2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
This program is free software; you can redistribute it and/or modify
@@ -39,22 +39,17 @@ enum squid_mode {
extern int winbindd_fd;
static const char *helper_protocol;
-static const char *username;
-static const char *domain;
-static const char *workstation;
-static const char *hex_challenge;
-static const char *hex_lm_response;
-static const char *hex_nt_response;
-static unsigned char *challenge;
-static size_t challenge_len;
-static unsigned char *lm_response;
-static size_t lm_response_len;
-static unsigned char *nt_response;
-static size_t nt_response_len;
+static const char *opt_username;
+static const char *opt_domain;
+static const char *opt_workstation;
+static const char *opt_password;
+static DATA_BLOB opt_challenge;
+static DATA_BLOB opt_lm_response;
+static DATA_BLOB opt_nt_response;
static int request_lm_key;
static int request_nt_key;
+static int diagnostics;
-static char *password;
static char winbind_separator(void)
{
@@ -178,42 +173,92 @@ static BOOL check_plaintext_auth(const char *user, const char *pass, BOOL stdout
return (result == NSS_STATUS_SUCCESS);
}
-static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state)
+/* authenticate a user with an encrypted username/password */
+
+static NTSTATUS contact_winbind_auth_crap(const char *username,
+ const char *domain,
+ const char *workstation,
+ const DATA_BLOB *challenge,
+ const DATA_BLOB *lm_response,
+ const DATA_BLOB *nt_response,
+ uint32 flags,
+ uint8 lm_key[16],
+ uint8 nt_key[16],
+ char **error_string)
{
+ NTSTATUS nt_status;
+ NSS_STATUS result;
struct winbindd_request request;
struct winbindd_response response;
- NSS_STATUS result;
- /* Send off request */
+
+ static uint8 zeros[16];
ZERO_STRUCT(request);
ZERO_STRUCT(response);
- fstrcpy(request.data.auth_crap.user, ntlmssp_state->user);
+ request.data.auth_crap.flags = flags;
- fstrcpy(request.data.auth_crap.domain, ntlmssp_state->domain);
- fstrcpy(request.data.auth_crap.workstation, ntlmssp_state->workstation);
-
- memcpy(request.data.auth_crap.chal, ntlmssp_state->chal.data,
- MIN(ntlmssp_state->chal.length, 8));
-
- memcpy(request.data.auth_crap.lm_resp, ntlmssp_state->lm_resp.data,
- MIN(ntlmssp_state->lm_resp.length, sizeof(request.data.auth_crap.lm_resp)));
-
- memcpy(request.data.auth_crap.nt_resp, ntlmssp_state->nt_resp.data,
- MIN(ntlmssp_state->nt_resp.length, sizeof(request.data.auth_crap.nt_resp)));
-
- request.data.auth_crap.lm_resp_len = ntlmssp_state->lm_resp.length;
- request.data.auth_crap.nt_resp_len = ntlmssp_state->nt_resp.length;
+ fstrcpy(request.data.auth_crap.user, username);
+
+ fstrcpy(request.data.auth_crap.domain, domain);
+ fstrcpy(request.data.auth_crap.workstation, workstation);
+
+ memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
+
+ if (lm_response && lm_response->length) {
+ memcpy(request.data.auth_crap.lm_resp, lm_response->data, MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
+ request.data.auth_crap.lm_resp_len = lm_response->length;
+ }
+ if (nt_response && nt_response->length) {
+ memcpy(request.data.auth_crap.nt_resp, nt_response->data, MIN(nt_response->length, sizeof(request.data.auth_crap.nt_resp)));
+ request.data.auth_crap.nt_resp_len = nt_response->length;
+ }
+
result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
/* Display response */
if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
- return NT_STATUS_UNSUCCESSFUL;
+ nt_status = NT_STATUS_UNSUCCESSFUL;
+ if (error_message)
+ *error_string = smb_xstrdup("Reading winbind reply failed!");
+ return nt_status;
+ }
+
+ nt_status = (NT_STATUS(response.data.auth.nt_status));
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ if (error_string)
+ *error_string = smb_xstrdup(response.data.auth.error_string);
+ return nt_status;
}
- return NT_STATUS(response.data.auth.nt_status);
+ if ((flags & WINBIND_PAM_LMKEY) && lm_key
+ && (memcmp(zeros, response.data.auth.first_8_lm_hash,
+ sizeof(response.data.auth.first_8_lm_hash)) != 0)) {
+ memcpy(lm_key, response.data.auth.first_8_lm_hash,
+ sizeof(response.data.auth.first_8_lm_hash));
+ }
+ if ((flags & WINBIND_PAM_NTKEY) && nt_key
+ && (memcmp(zeros, response.data.auth.nt_session_key,
+ sizeof(response.data.auth.nt_session_key)) != 0)) {
+ memcpy(nt_key, response.data.auth.nt_session_key,
+ sizeof(response.data.auth.nt_session_key));
+ }
+ return nt_status;
+}
+
+static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state)
+{
+ return contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
+ ntlmssp_state->workstation,
+ &ntlmssp_state->chal,
+ &ntlmssp_state->lm_resp,
+ &ntlmssp_state->nt_resp,
+ 0,
+ NULL,
+ NULL,
+ NULL);
}
static void manage_squid_ntlmssp_request(enum squid_mode squid_mode,
@@ -356,72 +401,283 @@ static void squid_stream(enum squid_mode squid_mode) {
static BOOL check_auth_crap(void)
{
- struct winbindd_request request;
- struct winbindd_response response;
- char *lm_key;
- char *nt_key;
+ NTSTATUS nt_status;
+ uint32 flags = 0;
+ char lm_key[8];
+ char nt_key[16];
+ char *hex_lm_key;
+ char *hex_nt_key;
+ char *error_string;
+
static uint8 zeros[16];
- NSS_STATUS result;
- /* Send off request */
-
- ZERO_STRUCT(request);
- ZERO_STRUCT(response);
-
if (request_lm_key)
- request.data.auth_crap.flags |= WINBIND_PAM_LMKEY;
+ flags |= WINBIND_PAM_LMKEY;
if (request_nt_key)
- request.data.auth_crap.flags |= WINBIND_PAM_NTKEY;
+ flags |= WINBIND_PAM_NTKEY;
+
+ nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
+ opt_workstation,
+ &opt_challenge,
+ &opt_lm_response,
+ &opt_nt_response,
+ flags,
+ lm_key,
+ nt_key,
+ &error_string);
+
+ 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;
+ }
- fstrcpy(request.data.auth_crap.user, username);
+ if (request_lm_key
+ && (memcmp(zeros, lm_key,
+ sizeof(lm_key)) != 0)) {
+ hex_encode(lm_key,
+ sizeof(lm_key),
+ &hex_lm_key);
+ d_printf("LM_KEY: %s\n", hex_lm_key);
+ SAFE_FREE(hex_lm_key);
+ }
+ if (request_nt_key
+ && (memcmp(zeros, nt_key,
+ sizeof(nt_key)) != 0)) {
+ hex_encode(nt_key,
+ sizeof(nt_key),
+ &hex_nt_key);
+ d_printf("NT_KEY: %s\n", hex_nt_key);
+ SAFE_FREE(hex_nt_key);
+ }
- fstrcpy(request.data.auth_crap.domain, domain);
- fstrcpy(request.data.auth_crap.workstation, workstation);
+ return True;
+}
+
+/*
+ Authenticate a user with a challenge/response, checking session key
+ and valid authentication types
+*/
+
+static const DATA_BLOB get_challenge(void)
+{
+ static DATA_BLOB chal;
+ if (opt_challenge.length)
+ return opt_challenge;
- memcpy(request.data.auth_crap.chal, challenge, MIN(challenge_len, 8));
+ chal = data_blob(NULL, 8);
- memcpy(request.data.auth_crap.lm_resp, lm_response, MIN(lm_response_len, sizeof(request.data.auth_crap.lm_resp)));
-
- memcpy(request.data.auth_crap.nt_resp, nt_response, MIN(nt_response_len, sizeof(request.data.auth_crap.nt_resp)));
-
- request.data.auth_crap.lm_resp_len = lm_response_len;
- request.data.auth_crap.nt_resp_len = nt_response_len;
+ generate_random_buffer(chal.data, chal.length, False);
+ return chal;
+}
- result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
+static BOOL test_lm(void)
+{
+ NTSTATUS nt_status;
+ uint32 flags = 0;
+ DATA_BLOB lm_response = data_blob(NULL, 24);
- /* Display response */
+ uchar lm_key[8];
+ uchar lm_hash[16];
+ DATA_BLOB chall = get_challenge();
+ char *error_string;
+
+ flags |= WINBIND_PAM_LMKEY;
+
+ SMBencrypt(opt_password,chall.data,lm_response.data);
+ E_deshash(opt_password, lm_hash);
+
+ nt_status = contact_winbind_auth_crap(opt_username, opt_domain, opt_workstation,
+ &chall,
+ &lm_response,
+ NULL,
+ flags,
+ lm_key,
+ NULL,
+ &error_string);
+
+ data_blob_free(&lm_response);
- if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
- d_printf("Reading winbind reply failed! (0x01)\n");
- }
-
- d_printf("%s (0x%x)\n",
- response.data.auth.nt_status_string,
- response.data.auth.nt_status);
-
- if (response.data.auth.nt_status == 0) {
- if (request_lm_key
- && (memcmp(zeros, response.data.auth.first_8_lm_hash,
- sizeof(response.data.auth.first_8_lm_hash)) != 0)) {
- hex_encode(response.data.auth.first_8_lm_hash,
- sizeof(response.data.auth.first_8_lm_hash),
- &lm_key);
- d_printf("LM_KEY: %s\n", lm_key);
- SAFE_FREE(lm_key);
- }
- if (request_nt_key
- && (memcmp(zeros, response.data.auth.nt_session_key,
- sizeof(response.data.auth.nt_session_key)) != 0)) {
- hex_encode(response.data.auth.nt_session_key,
- sizeof(response.data.auth.nt_session_key),
- &nt_key);
- d_printf("NT_KEY: %s\n", nt_key);
- SAFE_FREE(nt_key);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ d_printf("%s (0x%x)\n",
+ error_string,
+ NT_STATUS_V(nt_status));
+ 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);
+ }
+ return True;
+}
+
+static BOOL test_lm_ntlm(void)
+{
+ 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 nt_key[16];
+ uchar lm_hash[16];
+ uchar nt_hash[16];
+ DATA_BLOB chall = get_challenge();
+ char *error_string;
+
+ flags |= WINBIND_PAM_LMKEY;
+ flags |= WINBIND_PAM_NTKEY;
+
+ 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);
+
+ nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
+ opt_workstation,
+ &chall,
+ &lm_response,
+ &nt_response,
+ flags,
+ lm_key,
+ nt_key,
+ &error_string);
+
+ 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 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, nt_key,
+ sizeof(nt_key)) != 0) {
+ DEBUG(1, ("NT Session Key does not match expectations!\n"));
+ DEBUG(1, ("nt_key:\n"));
+ dump_data(1, nt_key, 16);
+ DEBUG(1, ("expected:\n"));
+ dump_data(1, session_key.data, session_key.length);
+ pass = False;
+ }
+ return pass;
+}
+
+static BOOL test_ntlm(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 nt_key[16];
+ char nt_hash[16];
+ DATA_BLOB chall = get_challenge();
+ char *error_string;
+
+ flags |= WINBIND_PAM_NTKEY;
+
+ SMBNTencrypt(opt_password,chall.data,nt_response.data);
+ E_md4hash(opt_password, nt_hash);
+ SMBsesskeygen_ntv1(nt_hash, NULL, session_key.data);
+
+ nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
+ opt_workstation,
+ &chall,
+ NULL,
+ &nt_response,
+ flags,
+ NULL,
+ nt_key,
+ &error_string);
+
+ 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(session_key.data, nt_key,
+ sizeof(nt_key)) != 0) {
+ DEBUG(1, ("NT Session Key does not match expectations!\n"));
+ DEBUG(1, ("nt_key:\n"));
+ dump_data(1, nt_key, 16);
+ DEBUG(1, ("expected:\n"));
+ dump_data(1, session_key.data, session_key.length);
+ pass = False;
+ }
+ return pass;
+}
+
+/*
+ Tests:
+
+ - LM only
+ - NT and LM
+ - NT
+ - NTLMv2
+ - NTLMv2 and LMv2
+ - LMv2
+
+ check we get the correct session key in each case
+ check what values we get for the LM session key
+
+*/
+
+struct ntlm_tests {
+ BOOL (*fn)();
+ const char *name;
+} test_table[] = {
+ {test_lm, "test LM"},
+ {test_lm_ntlm, "test LM and NTLM"},
+ {test_ntlm, "test NTLM"}
+/* {test_lm_ntlmv2, "test NTLMv2"}, */
+/* {test_lm_ntlmv2, "test NTLMv2 and LMv2"}, */
+/* {test_lm_ntlmv2, "test LMv2"} */
+};
+
+static 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 result == NSS_STATUS_SUCCESS;
+ return pass;
}
/* Main program */
@@ -436,26 +692,47 @@ enum {
OPT_NT,
OPT_PASSWORD,
OPT_LM_KEY,
- OPT_NT_KEY
+ OPT_NT_KEY,
+ OPT_DIAGNOSTICS
};
int main(int argc, const char **argv)
{
int opt;
+ static const char *hex_challenge;
+ static const char *hex_lm_response;
+ static const char *hex_nt_response;
+ char *challenge;
+ char *lm_response;
+ char *nt_response;
+ size_t challenge_len;
+ size_t lm_response_len;
+ size_t nt_response_len;
+
poptContext pc;
+
+ /* NOTE: DO NOT change this interface without considering the implications!
+ This is an external interface, which other programs will use to interact
+ with this helper.
+ */
+
+ /* We do not use single-letter command abbreviations, because they harm future
+ interface stability. */
+
struct poptOption long_options[] = {
POPT_AUTOHELP
{ "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
- { "username", 0, POPT_ARG_STRING, &username, OPT_USERNAME, "username"},
- { "domain", 0, POPT_ARG_STRING, &domain, OPT_DOMAIN, "domain name"},
- { "workstation", 0, POPT_ARG_STRING, &domain, OPT_WORKSTATION, "workstation"},
+ { "username", 0, POPT_ARG_STRING, &opt_username, OPT_USERNAME, "username"},
+ { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
+ { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
{ "challenge", 0, POPT_ARG_STRING, &hex_challenge, OPT_CHALLENGE, "challenge (HEX encoded)"},
{ "lm-response", 0, POPT_ARG_STRING, &hex_lm_response, OPT_LM, "LM Response to the challenge (HEX encoded)"},
{ "nt-response", 0, POPT_ARG_STRING, &hex_nt_response, OPT_NT, "NT or NTLMv2 Response to the challenge (HEX encoded)"},
- { "password", 0, POPT_ARG_STRING, &password, OPT_PASSWORD, "User's plaintext password"},
+ { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
{ "request-lm-key", 0, POPT_ARG_NONE, &request_lm_key, OPT_LM_KEY, "Retreive LM session key"},
{ "request-nt-key", 0, POPT_ARG_NONE, &request_nt_key, OPT_NT_KEY, "Retreive NT session key"},
+ { "diagnostics", 0, POPT_ARG_NONE, &diagnostics, OPT_DIAGNOSTICS, "Perform diagnostics on the authentictaion chain"},
POPT_COMMON_SAMBA
POPT_TABLEEND
};
@@ -481,29 +758,40 @@ enum {
while((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_CHALLENGE:
- challenge_len = strlen(hex_challenge);
- challenge = smb_xmalloc((challenge_len+1)/2);
- if ((challenge_len = strhex_to_str(challenge, challenge_len, hex_challenge)) != 8) {
- fprintf(stderr, "hex decode of %s failed (only got %u bytes)!\n",
+ challenge = smb_xmalloc((strlen(hex_challenge)+1)/2);
+ if ((challenge_len = strhex_to_str(challenge,
+ strlen(hex_challenge),
+ hex_challenge)) != 8) {
+ x_fprintf(x_stderr, "hex decode of %s failed (only got %u bytes)!\n",
hex_challenge, challenge_len);
exit(1);
}
+ opt_challenge = data_blob(challenge, challenge_len);
+ SAFE_FREE(challenge);
break;
case OPT_LM:
- lm_response_len = strlen(hex_lm_response);
- lm_response = smb_xmalloc((lm_response_len+1)/2);
- if ((lm_response_len = strhex_to_str(lm_response, lm_response_len, hex_lm_response)) != 24) {
- fprintf(stderr, "hex decode of %s failed!\n", hex_lm_response);
+ lm_response = smb_xmalloc((strlen(hex_lm_response)+1)/2);
+ lm_response_len = strhex_to_str(lm_response,
+ strlen(hex_lm_response),
+ hex_lm_response);
+ if (lm_response_len != 24) {
+ x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_lm_response);
exit(1);
}
+ opt_lm_response = data_blob(lm_response, lm_response_len);
+ SAFE_FREE(lm_response);
break;
case OPT_NT:
- nt_response_len = strlen(hex_nt_response);
- nt_response = smb_xmalloc((nt_response_len+1)/2);
- if ((nt_response_len = strhex_to_str(nt_response, nt_response_len, hex_nt_response)) < 24) {
- fprintf(stderr, "hex decode of %s failed!\n", hex_nt_response);
+ nt_response = smb_xmalloc((strlen(hex_nt_response)+1)/2);
+ nt_response_len = strhex_to_str(nt_response,
+ strlen(hex_nt_response),
+ hex_nt_response);
+ if (nt_response_len < 24) {
+ x_fprintf(x_stderr, "hex decode of %s failed!\n", hex_nt_response);
exit(1);
}
+ opt_nt_response = data_blob(nt_response, nt_response_len);
+ SAFE_FREE(nt_response);
break;
}
}
@@ -516,27 +804,45 @@ enum {
} else if (strcmp(helper_protocol, "squid-2.4-basic")== 0) {
squid_stream(SQUID_2_4_BASIC);
} else {
- fprintf(stderr, "unknown helper protocol [%s]\n", helper_protocol);
+ x_fprintf(x_stderr, "unknown helper protocol [%s]\n", helper_protocol);
exit(1);
}
}
- if (domain == NULL) {
- domain = get_winbind_domain();
+ if (!opt_username) {
+ x_fprintf(x_stderr, "username must be specified!\n\n");
+ poptPrintHelp(pc, stderr, 0);
+ exit(1);
}
- if (workstation == NULL) {
- workstation = "";
+ if (opt_domain == NULL) {
+ opt_domain = get_winbind_domain();
}
- if (challenge) {
+ if (opt_workstation == NULL) {
+ opt_workstation = "";
+ }
+
+ if (opt_challenge.length) {
if (!check_auth_crap()) {
exit(1);
}
- } else if (password) {
+ exit(0);
+ }
+
+ if (!opt_password) {
+ opt_password = getpass("password: ");
+ }
+
+ if (diagnostics) {
+ if (!diagnose_ntlm_auth()) {
+ exit(1);
+ }
+ } else {
fstring user;
- snprintf(user, sizeof(user)-1, "%s%c%s", domain, winbind_separator(), username);
- if (!check_plaintext_auth(user, password, True)) {
+
+ snprintf(user, sizeof(user)-1, "%s%c%s", opt_domain, winbind_separator(), opt_username);
+ if (!check_plaintext_auth(user, opt_password, True)) {
exit(1);
}
}
generated by cgit (git 2.34.1) at 2024-12-27 09:51:33 +0000