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samba-mirror/source3/utils/ntlm_auth.c
Jim McDonough 9a8e30d04b Fix bugzilla # 1208
Winbind tickets expired.  We now check the expiration time, and acquire
new tickets.  We couln't rely on renewing them, because if we didn't get
a request before they expired, we wouldn't have renewed them.  Also, there
is a one-week limit in MS on renewal life, so new tickets would have been
needed after a week anyway.   Default is 10 hours, so we should only be
acquiring them that often, unless the configuration on the DC is changed (and
the minimum is 1 hour).
(This used to be commit c2436c433a)
2004-03-24 17:32:55 +00:00

2183 lines
54 KiB
C

/*
Unix SMB/CIFS implementation.
Winbind status program.
Copyright (C) Tim Potter 2000-2002
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
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"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND
#define SQUID_BUFFER_SIZE 2010
enum stdio_helper_mode {
SQUID_2_4_BASIC,
SQUID_2_5_BASIC,
SQUID_2_5_NTLMSSP,
NTLMSSP_CLIENT_1,
GSS_SPNEGO,
GSS_SPNEGO_CLIENT,
NUM_HELPER_MODES
};
enum ntlm_break {
BREAK_NONE,
BREAK_LM,
BREAK_NT,
NO_LM,
NO_NT
};
typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
char *buf, int length);
static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
char *buf, int length);
static void manage_squid_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
char *buf, int length);
static void manage_client_ntlmssp_request (enum stdio_helper_mode stdio_helper_mode,
char *buf, int length);
static void manage_gss_spnego_request (enum stdio_helper_mode stdio_helper_mode,
char *buf, int length);
static void manage_gss_spnego_client_request (enum stdio_helper_mode stdio_helper_mode,
char *buf, int length);
static const struct {
enum stdio_helper_mode mode;
const char *name;
stdio_helper_function fn;
} stdio_helper_protocols[] = {
{ SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
{ SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
{ SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
{ NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
{ GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
{ GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
{ NUM_HELPER_MODES, NULL, NULL}
};
extern int winbindd_fd;
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 char winbind_separator(void)
{
struct winbindd_response response;
static BOOL got_sep;
static char sep;
if (got_sep)
return sep;
ZERO_STRUCT(response);
/* Send off request */
if (winbindd_request(WINBINDD_INFO, NULL, &response) !=
NSS_STATUS_SUCCESS) {
d_printf("could not obtain winbind separator!\n");
return '\\';
}
sep = response.data.info.winbind_separator;
got_sep = True;
if (!sep) {
d_printf("winbind separator was NULL!\n");
return '\\';
}
return sep;
}
static const char *get_winbind_domain(void)
{
struct winbindd_response response;
static fstring winbind_domain;
if (*winbind_domain) {
return winbind_domain;
}
ZERO_STRUCT(response);
/* Send off request */
if (winbindd_request(WINBINDD_DOMAIN_NAME, NULL, &response) !=
NSS_STATUS_SUCCESS) {
DEBUG(0, ("could not obtain winbind domain name!\n"));
return NULL;
}
fstrcpy(winbind_domain, response.data.domain_name);
return winbind_domain;
}
static const char *get_winbind_netbios_name(void)
{
struct winbindd_response response;
static fstring winbind_netbios_name;
if (*winbind_netbios_name) {
return winbind_netbios_name;
}
ZERO_STRUCT(response);
/* Send off request */
if (winbindd_request(WINBINDD_NETBIOS_NAME, NULL, &response) !=
NSS_STATUS_SUCCESS) {
DEBUG(0, ("could not obtain winbind netbios name!\n"));
return NULL;
}
fstrcpy(winbind_netbios_name, response.data.netbios_name);
return winbind_netbios_name;
}
/* Authenticate a user with a plaintext password */
static BOOL check_plaintext_auth(const char *user, const char *pass, BOOL stdout_diagnostics)
{
struct winbindd_request request;
struct winbindd_response response;
NSS_STATUS result;
/* Send off request */
ZERO_STRUCT(request);
ZERO_STRUCT(response);
fstrcpy(request.data.auth.user, user);
fstrcpy(request.data.auth.pass, pass);
result = winbindd_request(WINBINDD_PAM_AUTH, &request, &response);
/* Display response */
if (stdout_diagnostics) {
if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
d_printf("Reading winbind reply failed! (0x01)\n");
}
d_printf("%s: %s (0x%x)\n",
response.data.auth.nt_status_string,
response.data.auth.error_string,
response.data.auth.nt_status);
} else {
if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
}
DEBUG(3, ("%s: %s (0x%x)\n",
response.data.auth.nt_status_string,
response.data.auth.error_string,
response.data.auth.nt_status));
}
return (result == NSS_STATUS_SUCCESS);
}
/* 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[8],
uint8 nt_key[16],
char **error_string,
char **unix_name)
{
NTSTATUS nt_status;
NSS_STATUS result;
struct winbindd_request request;
struct winbindd_response response;
static uint8 zeros[16];
ZERO_STRUCT(request);
ZERO_STRUCT(response);
request.flags = flags;
if (push_utf8_fstring(request.data.auth_crap.user, username) == -1) {
*error_string = smb_xstrdup(
"unable to create utf8 string for username");
return NT_STATUS_UNSUCCESSFUL;
}
if (push_utf8_fstring(request.data.auth_crap.domain, domain) == -1) {
*error_string = smb_xstrdup(
"unable to create utf8 string for domain");
return NT_STATUS_UNSUCCESSFUL;
}
if (push_utf8_fstring(request.data.auth_crap.workstation,
workstation) == -1) {
*error_string = smb_xstrdup(
"unable to create utf8 string for workstation");
return NT_STATUS_UNSUCCESSFUL;
}
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)) {
nt_status = NT_STATUS_UNSUCCESSFUL;
if (error_string)
*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;
}
if ((flags & WBFLAG_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 & WBFLAG_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));
}
if (flags & WBFLAG_PAM_UNIX_NAME) {
if (pull_utf8_allocate(unix_name, (char *)response.extra_data) == -1) {
return NT_STATUS_NO_MEMORY;
}
}
return nt_status;
}
static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key)
{
static const char zeros[16];
NTSTATUS nt_status;
char *error_string;
uint8 lm_key[8];
uint8 nt_key[16];
char *unix_name;
nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
ntlmssp_state->workstation,
&ntlmssp_state->chal,
&ntlmssp_state->lm_resp,
&ntlmssp_state->nt_resp,
WBFLAG_PAM_LMKEY | WBFLAG_PAM_NTKEY | WBFLAG_PAM_UNIX_NAME,
lm_key, nt_key,
&error_string, &unix_name);
if (NT_STATUS_IS_OK(nt_status)) {
if (memcmp(lm_key, zeros, 8) != 0) {
*lm_session_key = data_blob(NULL, 16);
memcpy(lm_session_key->data, lm_key, 8);
memset(lm_session_key->data+8, '\0', 8);
}
if (memcmp(nt_key, zeros, 16) != 0) {
*nt_session_key = data_blob(nt_key, 16);
}
ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state->mem_ctx, unix_name);
SAFE_FREE(unix_name);
} else {
DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation, error_string ? error_string : "unknown error (NULL)"));
ntlmssp_state->auth_context = NULL;
}
return nt_status;
}
static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key)
{
static const char zeros[16];
NTSTATUS nt_status;
uint8 lm_key[8];
uint8 nt_key[16];
uint8 lm_pw[16], nt_pw[16];
nt_lm_owf_gen (opt_password, nt_pw, lm_pw);
nt_status = ntlm_password_check(ntlmssp_state->mem_ctx,
&ntlmssp_state->chal,
&ntlmssp_state->lm_resp,
&ntlmssp_state->nt_resp,
ntlmssp_state->user,
ntlmssp_state->user,
ntlmssp_state->domain,
lm_pw, nt_pw, nt_session_key, lm_session_key);
if (NT_STATUS_IS_OK(nt_status)) {
if (memcmp(lm_key, zeros, 8) != 0) {
*lm_session_key = data_blob(NULL, 16);
memcpy(lm_session_key->data, lm_key, 8);
memset(lm_session_key->data+8, '\0', 8);
}
if (memcmp(nt_key, zeros, 16) != 0) {
*nt_session_key = data_blob(nt_key, 16);
}
ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state->mem_ctx, "%s%c%s", ntlmssp_state->domain, *lp_winbind_separator(), ntlmssp_state->user);
} else {
DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
nt_errstr(nt_status)));
ntlmssp_state->auth_context = NULL;
}
return nt_status;
}
static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
{
NTSTATUS status;
if ( (opt_username == NULL) || (opt_domain == NULL) ) {
DEBUG(1, ("Need username and domain for NTLMSSP\n"));
return status;
}
status = ntlmssp_client_start(client_ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Could not start NTLMSSP client: %s\n",
nt_errstr(status)));
ntlmssp_end(client_ntlmssp_state);
return status;
}
status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Could not set username: %s\n",
nt_errstr(status)));
ntlmssp_end(client_ntlmssp_state);
return status;
}
status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Could not set domain: %s\n",
nt_errstr(status)));
ntlmssp_end(client_ntlmssp_state);
return status;
}
status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Could not set password: %s\n",
nt_errstr(status)));
ntlmssp_end(client_ntlmssp_state);
return status;
}
return NT_STATUS_OK;
}
static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
{
NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Could not start NTLMSSP client: %s\n",
nt_errstr(status)));
return status;
}
/* Have we been given a local password, or should we ask winbind? */
if (opt_password) {
(*ntlmssp_state)->check_password = local_pw_check;
(*ntlmssp_state)->get_domain = lp_workgroup;
(*ntlmssp_state)->get_global_myname = global_myname;
} else {
(*ntlmssp_state)->check_password = winbind_pw_check;
(*ntlmssp_state)->get_domain = get_winbind_domain;
(*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
}
return NT_STATUS_OK;
}
static void manage_squid_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
char *buf, int length)
{
static NTLMSSP_STATE *ntlmssp_state = NULL;
DATA_BLOB request, reply;
NTSTATUS nt_status;
if (strlen(buf) < 2) {
DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if (strlen(buf) > 3) {
request = base64_decode_data_blob(buf + 3);
} else {
request = data_blob(NULL, 0);
}
if ((strncmp(buf, "PW ", 3) == 0)) {
/* The calling application wants us to use a local password (rather than winbindd) */
opt_password = strndup((const char *)request.data, request.length);
if (opt_password == NULL) {
DEBUG(1, ("Out of memory\n"));
x_fprintf(x_stdout, "BH\n");
data_blob_free(&request);
return;
}
x_fprintf(x_stdout, "OK\n");
data_blob_free(&request);
return;
}
if (strncmp(buf, "YR", 2) == 0) {
if (ntlmssp_state)
ntlmssp_end(&ntlmssp_state);
} else if (strncmp(buf, "KK", 2) == 0) {
} else {
DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if (!ntlmssp_state) {
if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
return;
}
}
DEBUG(10, ("got NTLMSSP packet:\n"));
dump_data(10, (const char *)request.data, request.length);
nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
char *reply_base64 = base64_encode_data_blob(reply);
x_fprintf(x_stdout, "TT %s\n", reply_base64);
SAFE_FREE(reply_base64);
data_blob_free(&reply);
DEBUG(10, ("NTLMSSP challenge\n"));
} else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
ntlmssp_end(&ntlmssp_state);
} else if (!NT_STATUS_IS_OK(nt_status)) {
x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
} else {
x_fprintf(x_stdout, "AF %s\n", (char *)ntlmssp_state->auth_context);
DEBUG(10, ("NTLMSSP OK!\n"));
}
data_blob_free(&request);
}
static void manage_client_ntlmssp_request(enum stdio_helper_mode stdio_helper_mode,
char *buf, int length)
{
static NTLMSSP_STATE *ntlmssp_state = NULL;
DATA_BLOB request, reply;
NTSTATUS nt_status;
BOOL first = False;
if (strlen(buf) < 2) {
DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if (strlen(buf) > 3) {
request = base64_decode_data_blob(buf + 3);
} else {
request = data_blob(NULL, 0);
}
if (strncmp(buf, "PW ", 3) == 0) {
/* We asked for a password and obviously got it :-) */
opt_password = strndup((const char *)request.data, request.length);
if (opt_password == NULL) {
DEBUG(1, ("Out of memory\n"));
x_fprintf(x_stdout, "BH\n");
data_blob_free(&request);
return;
}
x_fprintf(x_stdout, "OK\n");
data_blob_free(&request);
return;
}
if (opt_password == NULL) {
/* Request a password from the calling process. After
sending it, the calling process should retry asking for the negotiate. */
DEBUG(10, ("Requesting password\n"));
x_fprintf(x_stdout, "PW\n");
return;
}
if (strncmp(buf, "YR", 2) == 0) {
if (ntlmssp_state)
ntlmssp_end(&ntlmssp_state);
} else if (strncmp(buf, "TT", 2) == 0) {
} else {
DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if (!ntlmssp_state) {
if (!NT_STATUS_IS_OK(nt_status = ntlm_auth_start_ntlmssp_client(&ntlmssp_state))) {
x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
return;
}
first = True;
}
DEBUG(10, ("got NTLMSSP packet:\n"));
dump_data(10, (const char *)request.data, request.length);
nt_status = ntlmssp_update(ntlmssp_state, request, &reply);
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
char *reply_base64 = base64_encode_data_blob(reply);
if (first) {
x_fprintf(x_stdout, "YR %s\n", reply_base64);
} else {
x_fprintf(x_stdout, "KK %s\n", reply_base64);
}
SAFE_FREE(reply_base64);
data_blob_free(&reply);
DEBUG(10, ("NTLMSSP challenge\n"));
} else if (NT_STATUS_IS_OK(nt_status)) {
x_fprintf(x_stdout, "AF\n");
DEBUG(10, ("NTLMSSP OK!\n"));
if (ntlmssp_state)
ntlmssp_end(&ntlmssp_state);
} else {
x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
if (ntlmssp_state)
ntlmssp_end(&ntlmssp_state);
}
data_blob_free(&request);
}
static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
char *buf, int length)
{
char *user, *pass;
user=buf;
pass=memchr(buf,' ',length);
if (!pass) {
DEBUG(2, ("Password not found. Denying access\n"));
x_fprintf(x_stderr, "ERR\n");
return;
}
*pass='\0';
pass++;
if (stdio_helper_mode == SQUID_2_5_BASIC) {
rfc1738_unescape(user);
rfc1738_unescape(pass);
}
if (check_plaintext_auth(user, pass, False)) {
x_fprintf(x_stdout, "OK\n");
} else {
x_fprintf(x_stdout, "ERR\n");
}
}
static void offer_gss_spnego_mechs(void) {
DATA_BLOB token;
SPNEGO_DATA spnego;
ssize_t len;
char *reply_base64;
pstring principal;
pstring myname_lower;
ZERO_STRUCT(spnego);
pstrcpy(myname_lower, global_myname());
strlower_m(myname_lower);
pstr_sprintf(principal, "%s$@%s", myname_lower, lp_realm());
/* Server negTokenInit (mech offerings) */
spnego.type = SPNEGO_NEG_TOKEN_INIT;
spnego.negTokenInit.mechTypes = smb_xmalloc(sizeof(char *) * 3);
#ifdef HAVE_KRB5
spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_KERBEROS5_OLD);
spnego.negTokenInit.mechTypes[1] = smb_xstrdup(OID_NTLMSSP);
spnego.negTokenInit.mechTypes[2] = NULL;
#else
spnego.negTokenInit.mechTypes[0] = smb_xstrdup(OID_NTLMSSP);
spnego.negTokenInit.mechTypes[1] = NULL;
#endif
spnego.negTokenInit.mechListMIC = data_blob(principal,
strlen(principal));
len = write_spnego_data(&token, &spnego);
free_spnego_data(&spnego);
if (len == -1) {
DEBUG(1, ("Could not write SPNEGO data blob\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
reply_base64 = base64_encode_data_blob(token);
x_fprintf(x_stdout, "TT %s *\n", reply_base64);
SAFE_FREE(reply_base64);
data_blob_free(&token);
DEBUG(10, ("sent SPNEGO negTokenInit\n"));
return;
}
static void manage_gss_spnego_request(enum stdio_helper_mode stdio_helper_mode,
char *buf, int length)
{
static NTLMSSP_STATE *ntlmssp_state = NULL;
SPNEGO_DATA request, response;
DATA_BLOB token;
NTSTATUS status;
ssize_t len;
char *user = NULL;
char *domain = NULL;
const char *reply_code;
char *reply_base64;
pstring reply_argument;
if (strlen(buf) < 2) {
if (ntlmssp_state != NULL) {
DEBUG(1, ("Request for initial SPNEGO request where "
"we already have a state\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if ( (strlen(buf) == 2) && (strcmp(buf, "YR") == 0) ) {
/* Initial request, get the negTokenInit offering
mechanisms */
offer_gss_spnego_mechs();
return;
}
/* All subsequent requests are "KK" (Knock, Knock ;)) and have
a blob. This might be negTokenInit or negTokenTarg */
if ( (strlen(buf) <= 3) || (strncmp(buf, "KK", 2) != 0) ) {
DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
token = base64_decode_data_blob(buf + 3);
len = read_spnego_data(token, &request);
data_blob_free(&token);
if (len == -1) {
DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if (request.type == SPNEGO_NEG_TOKEN_INIT) {
/* Second request from Client. This is where the
client offers its mechanism to use. */
if ( (request.negTokenInit.mechTypes == NULL) ||
(request.negTokenInit.mechTypes[0] == NULL) ) {
DEBUG(1, ("Client did not offer any mechanism"));
x_fprintf(x_stdout, "BH\n");
return;
}
if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
if ( request.negTokenInit.mechToken.data == NULL ) {
DEBUG(1, ("Client did not provide NTLMSSP data\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
if ( ntlmssp_state != NULL ) {
DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
"already got one\n"));
x_fprintf(x_stdout, "BH\n");
ntlmssp_end(&ntlmssp_state);
return;
}
if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
return;
}
DEBUG(10, ("got NTLMSSP packet:\n"));
dump_data(10, (const char *)request.negTokenInit.mechToken.data,
request.negTokenInit.mechToken.length);
response.type = SPNEGO_NEG_TOKEN_TARG;
response.negTokenTarg.supportedMech = strdup(OID_NTLMSSP);
response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
status = ntlmssp_update(ntlmssp_state,
request.negTokenInit.mechToken,
&response.negTokenTarg.responseToken);
}
#ifdef HAVE_KRB5
if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
char *principal;
DATA_BLOB auth_data;
DATA_BLOB ap_rep;
DATA_BLOB session_key;
if ( request.negTokenInit.mechToken.data == NULL ) {
DEBUG(1, ("Client did not provide Kerberos data\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
response.type = SPNEGO_NEG_TOKEN_TARG;
response.negTokenTarg.supportedMech = strdup(OID_KERBEROS5_OLD);
response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
response.negTokenTarg.responseToken = data_blob(NULL, 0);
status = ads_verify_ticket(lp_realm(),
&request.negTokenInit.mechToken,
&principal, &auth_data, &ap_rep,
&session_key);
/* Now in "principal" we have the name we are
authenticated as. */
if (NT_STATUS_IS_OK(status)) {
domain = strchr(principal, '@');
if (domain == NULL) {
DEBUG(1, ("Did not get a valid principal "
"from ads_verify_ticket\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
*domain++ = '\0';
domain = strdup(domain);
user = strdup(principal);
data_blob_free(&ap_rep);
data_blob_free(&auth_data);
SAFE_FREE(principal);
}
}
#endif
} else {
if ( (request.negTokenTarg.supportedMech == NULL) ||
( strcmp(request.negTokenTarg.supportedMech, OID_NTLMSSP) != 0 ) ) {
/* Kerberos should never send a negTokenTarg, OID_NTLMSSP
is the only one we support that sends this stuff */
DEBUG(1, ("Got a negTokenTarg for something non-NTLMSSP: %s\n",
request.negTokenTarg.supportedMech));
x_fprintf(x_stdout, "BH\n");
return;
}
if (request.negTokenTarg.responseToken.data == NULL) {
DEBUG(1, ("Got a negTokenTarg without a responseToken!\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
status = ntlmssp_update(ntlmssp_state,
request.negTokenTarg.responseToken,
&response.negTokenTarg.responseToken);
response.type = SPNEGO_NEG_TOKEN_TARG;
response.negTokenTarg.supportedMech = strdup(OID_NTLMSSP);
response.negTokenTarg.mechListMIC = data_blob(NULL, 0);
if (NT_STATUS_IS_OK(status)) {
user = strdup(ntlmssp_state->user);
domain = strdup(ntlmssp_state->domain);
ntlmssp_end(&ntlmssp_state);
}
}
free_spnego_data(&request);
if (NT_STATUS_IS_OK(status)) {
response.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
reply_code = "AF";
pstr_sprintf(reply_argument, "%s\\%s", domain, user);
} else if (NT_STATUS_EQUAL(status,
NT_STATUS_MORE_PROCESSING_REQUIRED)) {
response.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
reply_code = "TT";
pstr_sprintf(reply_argument, "*");
} else {
response.negTokenTarg.negResult = SPNEGO_REJECT;
reply_code = "NA";
pstrcpy(reply_argument, nt_errstr(status));
}
SAFE_FREE(user);
SAFE_FREE(domain);
len = write_spnego_data(&token, &response);
free_spnego_data(&response);
if (len == -1) {
DEBUG(1, ("Could not write SPNEGO data blob\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
reply_base64 = base64_encode_data_blob(token);
x_fprintf(x_stdout, "%s %s %s\n",
reply_code, reply_base64, reply_argument);
SAFE_FREE(reply_base64);
data_blob_free(&token);
return;
}
static NTLMSSP_STATE *client_ntlmssp_state = NULL;
static BOOL manage_client_ntlmssp_init(SPNEGO_DATA spnego)
{
NTSTATUS status;
DATA_BLOB null_blob = data_blob(NULL, 0);
DATA_BLOB to_server;
char *to_server_base64;
const char *my_mechs[] = {OID_NTLMSSP, NULL};
DEBUG(10, ("Got spnego negTokenInit with NTLMSSP\n"));
if (client_ntlmssp_state != NULL) {
DEBUG(1, ("Request for initial SPNEGO request where "
"we already have a state\n"));
return False;
}
if (!client_ntlmssp_state) {
if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_client(&client_ntlmssp_state))) {
x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
return False;
}
}
if (opt_password == NULL) {
/* Request a password from the calling process. After
sending it, the calling process should retry with
the negTokenInit. */
DEBUG(10, ("Requesting password\n"));
x_fprintf(x_stdout, "PW\n");
return True;
}
spnego.type = SPNEGO_NEG_TOKEN_INIT;
spnego.negTokenInit.mechTypes = my_mechs;
spnego.negTokenInit.reqFlags = 0;
spnego.negTokenInit.mechListMIC = null_blob;
status = ntlmssp_update(client_ntlmssp_state, null_blob,
&spnego.negTokenInit.mechToken);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED, got: %s\n",
nt_errstr(status)));
ntlmssp_end(&client_ntlmssp_state);
return False;
}
write_spnego_data(&to_server, &spnego);
data_blob_free(&spnego.negTokenInit.mechToken);
to_server_base64 = base64_encode_data_blob(to_server);
data_blob_free(&to_server);
x_fprintf(x_stdout, "KK %s\n", to_server_base64);
SAFE_FREE(to_server_base64);
return True;
}
static void manage_client_ntlmssp_targ(SPNEGO_DATA spnego)
{
NTSTATUS status;
DATA_BLOB null_blob = data_blob(NULL, 0);
DATA_BLOB request;
DATA_BLOB to_server;
char *to_server_base64;
DEBUG(10, ("Got spnego negTokenTarg with NTLMSSP\n"));
if (client_ntlmssp_state == NULL) {
DEBUG(1, ("Got NTLMSSP tArg without a client state\n"));
x_fprintf(x_stdout, "BH\n");
ntlmssp_end(&client_ntlmssp_state);
return;
}
if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
x_fprintf(x_stdout, "NA\n");
ntlmssp_end(&client_ntlmssp_state);
return;
}
if (spnego.negTokenTarg.negResult == SPNEGO_ACCEPT_COMPLETED) {
x_fprintf(x_stdout, "AF\n");
ntlmssp_end(&client_ntlmssp_state);
return;
}
status = ntlmssp_update(client_ntlmssp_state,
spnego.negTokenTarg.responseToken,
&request);
if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
DEBUG(1, ("Expected MORE_PROCESSING_REQUIRED from "
"ntlmssp_client_update, got: %s\n",
nt_errstr(status)));
x_fprintf(x_stdout, "BH\n");
data_blob_free(&request);
ntlmssp_end(&client_ntlmssp_state);
return;
}
spnego.type = SPNEGO_NEG_TOKEN_TARG;
spnego.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
spnego.negTokenTarg.supportedMech = OID_NTLMSSP;
spnego.negTokenTarg.responseToken = request;
spnego.negTokenTarg.mechListMIC = null_blob;
write_spnego_data(&to_server, &spnego);
data_blob_free(&request);
to_server_base64 = base64_encode_data_blob(to_server);
data_blob_free(&to_server);
x_fprintf(x_stdout, "KK %s\n", to_server_base64);
SAFE_FREE(to_server_base64);
return;
}
#ifdef HAVE_KRB5
static BOOL manage_client_krb5_init(SPNEGO_DATA spnego)
{
char *principal;
DATA_BLOB tkt, to_server;
DATA_BLOB session_key_krb5;
SPNEGO_DATA reply;
char *reply_base64;
int retval;
const char *my_mechs[] = {OID_KERBEROS5_OLD, NULL};
ssize_t len;
if ( (spnego.negTokenInit.mechListMIC.data == NULL) ||
(spnego.negTokenInit.mechListMIC.length == 0) ) {
DEBUG(1, ("Did not get a principal for krb5\n"));
return False;
}
principal = malloc(spnego.negTokenInit.mechListMIC.length+1);
if (principal == NULL) {
DEBUG(1, ("Could not malloc principal\n"));
return False;
}
memcpy(principal, spnego.negTokenInit.mechListMIC.data,
spnego.negTokenInit.mechListMIC.length);
principal[spnego.negTokenInit.mechListMIC.length] = '\0';
retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5);
if (retval) {
pstring user;
/* Let's try to first get the TGT, for that we need a
password. */
if (opt_password == NULL) {
DEBUG(10, ("Requesting password\n"));
x_fprintf(x_stdout, "PW\n");
return True;
}
pstr_sprintf(user, "%s@%s", opt_username, opt_domain);
if ((retval = kerberos_kinit_password(user, opt_password,
0, NULL))) {
DEBUG(10, ("Requesting TGT failed: %s\n", error_message(retval)));
x_fprintf(x_stdout, "NA\n");
return True;
}
retval = cli_krb5_get_ticket(principal, 0, &tkt, &session_key_krb5);
if (retval) {
DEBUG(10, ("Kinit suceeded, but getting a ticket failed: %s\n", error_message(retval)));
}
}
data_blob_free(&session_key_krb5);
ZERO_STRUCT(reply);
reply.type = SPNEGO_NEG_TOKEN_INIT;
reply.negTokenInit.mechTypes = my_mechs;
reply.negTokenInit.reqFlags = 0;
reply.negTokenInit.mechToken = tkt;
reply.negTokenInit.mechListMIC = data_blob(NULL, 0);
len = write_spnego_data(&to_server, &reply);
data_blob_free(&tkt);
if (len == -1) {
DEBUG(1, ("Could not write SPNEGO data blob\n"));
return False;
}
reply_base64 = base64_encode_data_blob(to_server);
x_fprintf(x_stdout, "KK %s *\n", reply_base64);
SAFE_FREE(reply_base64);
data_blob_free(&to_server);
DEBUG(10, ("sent GSS-SPNEGO KERBEROS5 negTokenInit\n"));
return True;
}
static void manage_client_krb5_targ(SPNEGO_DATA spnego)
{
switch (spnego.negTokenTarg.negResult) {
case SPNEGO_ACCEPT_INCOMPLETE:
DEBUG(1, ("Got a Kerberos negTokenTarg with ACCEPT_INCOMPLETE\n"));
x_fprintf(x_stdout, "BH\n");
break;
case SPNEGO_ACCEPT_COMPLETED:
DEBUG(10, ("Accept completed\n"));
x_fprintf(x_stdout, "AF\n");
break;
case SPNEGO_REJECT:
DEBUG(10, ("Rejected\n"));
x_fprintf(x_stdout, "NA\n");
break;
default:
DEBUG(1, ("Got an invalid negTokenTarg\n"));
x_fprintf(x_stdout, "AF\n");
}
}
#endif
static void manage_gss_spnego_client_request(enum stdio_helper_mode stdio_helper_mode,
char *buf, int length)
{
DATA_BLOB request;
SPNEGO_DATA spnego;
ssize_t len;
if (strlen(buf) <= 3) {
DEBUG(1, ("SPNEGO query [%s] too short\n", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
request = base64_decode_data_blob(buf+3);
if (strncmp(buf, "PW ", 3) == 0) {
/* We asked for a password and obviously got it :-) */
opt_password = strndup((const char *)request.data, request.length);
if (opt_password == NULL) {
DEBUG(1, ("Out of memory\n"));
x_fprintf(x_stdout, "BH\n");
data_blob_free(&request);
return;
}
x_fprintf(x_stdout, "OK\n");
data_blob_free(&request);
return;
}
if ( (strncmp(buf, "TT ", 3) != 0) &&
(strncmp(buf, "AF ", 3) != 0) &&
(strncmp(buf, "NA ", 3) != 0) ) {
DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
x_fprintf(x_stdout, "BH\n");
data_blob_free(&request);
return;
}
/* So we got a server challenge to generate a SPNEGO
client-to-server request... */
len = read_spnego_data(request, &spnego);
data_blob_free(&request);
if (len == -1) {
DEBUG(1, ("Could not read SPNEGO data for [%s]\n", buf));
x_fprintf(x_stdout, "BH\n");
return;
}
if (spnego.type == SPNEGO_NEG_TOKEN_INIT) {
/* The server offers a list of mechanisms */
const char **mechType = spnego.negTokenInit.mechTypes;
while (*mechType != NULL) {
#ifdef HAVE_KRB5
if ( (strcmp(*mechType, OID_KERBEROS5_OLD) == 0) ||
(strcmp(*mechType, OID_KERBEROS5) == 0) ) {
if (manage_client_krb5_init(spnego))
goto out;
}
#endif
if (strcmp(*mechType, OID_NTLMSSP) == 0) {
if (manage_client_ntlmssp_init(spnego))
goto out;
}
mechType++;
}
DEBUG(1, ("Server offered no compatible mechanism\n"));
x_fprintf(x_stdout, "BH\n");
return;
}
if (spnego.type == SPNEGO_NEG_TOKEN_TARG) {
if (spnego.negTokenTarg.supportedMech == NULL) {
/* On accept/reject Windows does not send the
mechanism anymore. Handle that here and
shut down the mechanisms. */
switch (spnego.negTokenTarg.negResult) {
case SPNEGO_ACCEPT_COMPLETED:
x_fprintf(x_stdout, "AF\n");
break;
case SPNEGO_REJECT:
x_fprintf(x_stdout, "NA\n");
break;
default:
DEBUG(1, ("Got a negTokenTarg with no mech and an "
"unknown negResult: %d\n",
spnego.negTokenTarg.negResult));
x_fprintf(x_stdout, "BH\n");
}
ntlmssp_end(&client_ntlmssp_state);
goto out;
}
if (strcmp(spnego.negTokenTarg.supportedMech,
OID_NTLMSSP) == 0) {
manage_client_ntlmssp_targ(spnego);
goto out;
}
#if HAVE_KRB5
if (strcmp(spnego.negTokenTarg.supportedMech,
OID_KERBEROS5_OLD) == 0) {
manage_client_krb5_targ(spnego);
goto out;
}
#endif
}
DEBUG(1, ("Got an SPNEGO token I could not handle [%s]!\n", buf));
x_fprintf(x_stdout, "BH\n");
return;
out:
free_spnego_data(&spnego);
return;
}
static void manage_squid_request(enum stdio_helper_mode helper_mode, stdio_helper_function fn)
{
char buf[SQUID_BUFFER_SIZE+1];
int length;
char *c;
static BOOL err;
/* this is not a typo - x_fgets doesn't work too well under squid */
if (fgets(buf, sizeof(buf)-1, stdin) == NULL) {
DEBUG(1, ("fgets() failed! dying..... errno=%d (%s)\n", ferror(stdin),
strerror(ferror(stdin))));
exit(1); /* BIIG buffer */
}
c=memchr(buf,'\n',sizeof(buf)-1);
if (c) {
*c = '\0';
length = c-buf;
} else {
err = 1;
return;
}
if (err) {
DEBUG(2, ("Oversized message\n"));
x_fprintf(x_stderr, "ERR\n");
err = 0;
return;
}
DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
if (buf[0] == '\0') {
DEBUG(2, ("Invalid Request\n"));
x_fprintf(x_stderr, "ERR\n");
return;
}
fn(helper_mode, buf, length);
}
static void squid_stream(enum stdio_helper_mode stdio_mode, stdio_helper_function fn) {
/* initialize FDescs */
x_setbuf(x_stdout, NULL);
x_setbuf(x_stderr, NULL);
while(1) {
manage_squid_request(stdio_mode, fn);
}
}
/* Authenticate a user with a challenge/response */
static BOOL check_auth_crap(void)
{
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];
x_setbuf(x_stdout, NULL);
if (request_lm_key)
flags |= WBFLAG_PAM_LMKEY;
if (request_nt_key)
flags |= WBFLAG_PAM_NTKEY;
nt_status = contact_winbind_auth_crap(opt_username, opt_domain,
opt_workstation,
&opt_challenge,
&opt_lm_response,
&opt_nt_response,
flags,
(unsigned char *)lm_key,
(unsigned char *)nt_key,
&error_string, NULL);
if (!NT_STATUS_IS_OK(nt_status)) {
x_fprintf(x_stdout, "%s (0x%x)\n",
error_string,
NT_STATUS_V(nt_status));
SAFE_FREE(error_string);
return False;
}
if (request_lm_key
&& (memcmp(zeros, lm_key,
sizeof(lm_key)) != 0)) {
hex_encode((const unsigned char *)lm_key,
sizeof(lm_key),
&hex_lm_key);
x_fprintf(x_stdout, "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((const unsigned char *)nt_key,
sizeof(nt_key),
&hex_nt_key);
x_fprintf(x_stdout, "NT_KEY: %s\n", hex_nt_key);
SAFE_FREE(hex_nt_key);
}
return True;
}
/*
Authenticate a user with a challenge/response, checking session key
and valid authentication types
*/
static DATA_BLOB get_challenge(void)
{
static DATA_BLOB chal;
if (opt_challenge.length)
return opt_challenge;
chal = data_blob(NULL, 8);
generate_random_buffer(chal.data, chal.length, False);
return chal;
}
/*
* 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 nt_key[16];
uchar lm_hash[16];
uchar nt_hash[16];
DATA_BLOB chall = get_challenge();
char *error_string;
ZERO_STRUCT(lm_key);
ZERO_STRUCT(nt_key);
flags |= WBFLAG_PAM_LMKEY;
flags |= WBFLAG_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);
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,
nt_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, nt_key,
8) != 0) {
DEBUG(1, ("NT Session Key does not match expectations (should be LM hash)!\n"));
DEBUG(1, ("nt_key:\n"));
dump_data(1, (const char *)nt_key, sizeof(nt_key));
DEBUG(1, ("expected:\n"));
dump_data(1, (const char *)lm_hash, sizeof(lm_hash));
pass = False;
}
} else {
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, (const char *)nt_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 nt_key[16];
DATA_BLOB chall = get_challenge();
char *error_string;
ZERO_STRUCT(nt_key);
flags |= WBFLAG_PAM_LMKEY;
flags |= WBFLAG_PAM_NTKEY;
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,
nt_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, nt_key, 8) != 0) {
DEBUG(1, ("Session Key (first 8 lm hash) does not match expectations!\n"));
DEBUG(1, ("nt_key:\n"));
dump_data(1, (const char *)nt_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 nt_key[16];
char nt_hash[16];
DATA_BLOB chall = get_challenge();
char *error_string;
ZERO_STRUCT(lm_key);
ZERO_STRUCT(nt_key);
flags |= WBFLAG_PAM_LMKEY;
flags |= WBFLAG_PAM_NTKEY;
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 *)nt_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, 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, (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 nt_session_key = data_blob(NULL, 0);
DATA_BLOB names_blob = NTLMv2_generate_names_blob(get_winbind_netbios_name(), get_winbind_domain());
uchar nt_key[16];
DATA_BLOB chall = get_challenge();
char *error_string;
ZERO_STRUCT(nt_key);
flags |= WBFLAG_PAM_NTKEY;
if (!SMBNTLMv2encrypt(opt_username, opt_domain, opt_password, &chall,
&names_blob,
&lmv2_response, &ntlmv2_response,
&nt_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,
nt_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(nt_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, (const char *)nt_key, 16);
DEBUG(1, ("expected:\n"));
dump_data(1, (const char *)nt_session_key.data, nt_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 nt_key[16];
uchar lm_key[16];
static const uchar zeros[8];
DATA_BLOB chall = data_blob(zeros, sizeof(zeros));
char *error_string;
ZERO_STRUCT(nt_key);
flags |= WBFLAG_PAM_NTKEY;
flags |= WBFLAG_PAM_LMKEY;
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,
nt_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"}
};
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 pass;
}
/* Main program */
enum {
OPT_USERNAME = 1000,
OPT_DOMAIN,
OPT_WORKSTATION,
OPT_CHALLENGE,
OPT_RESPONSE,
OPT_LM,
OPT_NT,
OPT_PASSWORD,
OPT_LM_KEY,
OPT_NT_KEY,
OPT_DIAGNOSTICS
};
int main(int argc, const char **argv)
{
int opt;
static const char *helper_protocol;
static int diagnostics;
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, &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, &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
};
/* Samba client initialisation */
dbf = x_stderr;
/* Samba client initialisation */
if (!lp_load(dyn_CONFIGFILE, True, False, False)) {
d_fprintf(stderr, "wbinfo: error opening config file %s. Error was %s\n",
dyn_CONFIGFILE, strerror(errno));
exit(1);
}
/* Parse options */
pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
/* Parse command line options */
if (argc == 1) {
poptPrintHelp(pc, stderr, 0);
return 1;
}
pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
POPT_CONTEXT_KEEP_FIRST);
while((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
case OPT_CHALLENGE:
challenge = smb_xmalloc((strlen(hex_challenge))/2+1);
if ((challenge_len = strhex_to_str(challenge,
strlen(hex_challenge),
hex_challenge)) != 8) {
x_fprintf(x_stderr, "hex decode of %s failed (only got %lu bytes)!\n",
hex_challenge, (unsigned long)challenge_len);
exit(1);
}
opt_challenge = data_blob(challenge, challenge_len);
SAFE_FREE(challenge);
break;
case OPT_LM:
lm_response = smb_xmalloc((strlen(hex_lm_response))/2+1);
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 = smb_xmalloc((strlen(hex_nt_response)+2)/2+1);
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;
}
}
if (helper_protocol) {
int i;
for (i=0; i<NUM_HELPER_MODES; i++) {
if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
exit(0);
}
}
x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
for (i=0; i<NUM_HELPER_MODES; i++) {
x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
}
exit(1);
}
if (!opt_username) {
x_fprintf(x_stderr, "username must be specified!\n\n");
poptPrintHelp(pc, stderr, 0);
exit(1);
}
if (opt_domain == NULL) {
opt_domain = get_winbind_domain();
}
if (opt_workstation == NULL) {
opt_workstation = "";
}
if (opt_challenge.length) {
if (!check_auth_crap()) {
exit(1);
}
exit(0);
}
if (!opt_password) {
opt_password = getpass("password: ");
}
if (diagnostics) {
if (!diagnose_ntlm_auth()) {
exit(1);
}
} else {
fstring user;
fstr_sprintf(user, "%s%c%s", opt_domain, winbind_separator(), opt_username);
if (!check_plaintext_auth(user, opt_password, True)) {
exit(1);
}
}
/* Exit code */
poptFreeContext(pc);
return 0;
}