2 Unix SMB/CIFS implementation.
4 Winbind status program.
6 Copyright (C) Tim Potter 2000-2003
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
8 Copyright (C) Francesco Chemolli <kinkie@kame.usr.dsi.unimi.it> 2000
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "lib/cmdline/popt_common.h"
27 #include "lib/ldb/include/ldb.h"
28 #include "auth/credentials/credentials.h"
29 #include "auth/gensec/gensec.h"
30 #include "auth/auth.h"
31 #include "librpc/gen_ndr/ndr_netlogon.h"
32 #include "auth/auth_sam.h"
34 #include "libcli/auth/libcli_auth.h"
35 #include "libcli/security/security.h"
36 #include "lib/events/events.h"
37 #include "lib/messaging/messaging.h"
38 #include "lib/messaging/irpc.h"
39 #include "auth/ntlmssp/ntlmssp.h"
40 #include "param/param.h"
42 #define INITIAL_BUFFER_SIZE 300
43 #define MAX_BUFFER_SIZE 63000
45 enum stdio_helper_mode {
56 #define NTLM_AUTH_FLAG_USER_SESSION_KEY 0x0004
57 #define NTLM_AUTH_FLAG_LMKEY 0x0008
60 typedef void (*stdio_helper_function)(enum stdio_helper_mode stdio_helper_mode,
61 struct loadparm_context *lp_ctx,
62 char *buf, int length, void **private,
63 unsigned int mux_id, void **private2);
65 static void manage_squid_basic_request (enum stdio_helper_mode stdio_helper_mode,
66 struct loadparm_context *lp_ctx,
67 char *buf, int length, void **private,
68 unsigned int mux_id, void **private2);
70 static void manage_gensec_request (enum stdio_helper_mode stdio_helper_mode,
71 struct loadparm_context *lp_ctx,
72 char *buf, int length, void **private,
73 unsigned int mux_id, void **private2);
75 static void manage_ntlm_server_1_request (enum stdio_helper_mode stdio_helper_mode,
76 struct loadparm_context *lp_ctx,
77 char *buf, int length, void **private,
78 unsigned int mux_id, void **private2);
80 static void manage_squid_request(struct loadparm_context *lp_ctx,
81 enum stdio_helper_mode helper_mode,
82 stdio_helper_function fn, void **private2);
85 enum stdio_helper_mode mode;
87 stdio_helper_function fn;
88 } stdio_helper_protocols[] = {
89 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
90 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
91 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_gensec_request},
92 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gensec_request},
93 { GSS_SPNEGO_SERVER, "gss-spnego", manage_gensec_request},
94 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_gensec_request},
95 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
96 { NUM_HELPER_MODES, NULL, NULL}
99 extern int winbindd_fd;
101 static const char *opt_username;
102 static const char *opt_domain;
103 static const char *opt_workstation;
104 static const char *opt_password;
105 static int opt_multiplex;
106 static int use_cached_creds;
109 static void mux_printf(unsigned int mux_id, const char *format, ...) PRINTF_ATTRIBUTE(2, 3);
111 static void mux_printf(unsigned int mux_id, const char *format, ...)
116 x_fprintf(x_stdout, "%d ", mux_id);
119 va_start(ap, format);
120 x_vfprintf(x_stdout, format, ap);
126 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
127 form DOMAIN/user into a domain and a user */
129 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
130 fstring user, char winbind_separator)
133 char *p = strchr(domuser, winbind_separator);
140 fstrcpy(domain, domuser);
141 domain[PTR_DIFF(p, domuser)] = 0;
147 * Decode a base64 string into a DATA_BLOB - simple and slow algorithm
149 static DATA_BLOB base64_decode_data_blob(TALLOC_CTX *mem_ctx, const char *s)
151 DATA_BLOB ret = data_blob_talloc(mem_ctx, s, strlen(s)+1);
152 ret.length = ldb_base64_decode((char *)ret.data);
157 * Encode a base64 string into a talloc()ed string caller to free.
159 static char *base64_encode_data_blob(TALLOC_CTX *mem_ctx, DATA_BLOB data)
161 return ldb_base64_encode(mem_ctx, (const char *)data.data, data.length);
165 * Decode a base64 string in-place - wrapper for the above
167 static void base64_decode_inplace(char *s)
169 ldb_base64_decode(s);
174 /* Authenticate a user with a plaintext password */
176 static bool check_plaintext_auth(const char *user, const char *pass,
177 bool stdout_diagnostics)
179 return (strcmp(pass, opt_password) == 0);
182 /* authenticate a user with an encrypted username/password */
184 static NTSTATUS local_pw_check_specified(struct loadparm_context *lp_ctx,
185 const char *username,
187 const char *workstation,
188 const DATA_BLOB *challenge,
189 const DATA_BLOB *lm_response,
190 const DATA_BLOB *nt_response,
192 DATA_BLOB *lm_session_key,
193 DATA_BLOB *user_session_key,
198 struct samr_Password lm_pw, nt_pw;
199 struct samr_Password *lm_pwd, *nt_pwd;
200 TALLOC_CTX *mem_ctx = talloc_init("local_pw_check_specified");
202 nt_status = NT_STATUS_NO_MEMORY;
205 E_md4hash(opt_password, nt_pw.hash);
206 if (E_deshash(opt_password, lm_pw.hash)) {
214 nt_status = ntlm_password_check(mem_ctx,
216 MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT |
217 MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT,
224 lm_pwd, nt_pwd, user_session_key, lm_session_key);
226 if (NT_STATUS_IS_OK(nt_status)) {
230 *lp_winbind_separator(lp_ctx),
234 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
235 domain, username, workstation,
236 nt_errstr(nt_status)));
238 talloc_free(mem_ctx);
241 *error_string = strdup(nt_errstr(nt_status));
248 static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
249 struct loadparm_context *lp_ctx,
250 char *buf, int length, void **private,
251 unsigned int mux_id, void **private2)
256 pass = memchr(buf, ' ', length);
258 DEBUG(2, ("Password not found. Denying access\n"));
259 mux_printf(mux_id, "ERR\n");
265 if (stdio_helper_mode == SQUID_2_5_BASIC) {
266 rfc1738_unescape(user);
267 rfc1738_unescape(pass);
270 if (check_plaintext_auth(user, pass, false)) {
271 mux_printf(mux_id, "OK\n");
273 mux_printf(mux_id, "ERR\n");
277 /* This is a bit hairy, but the basic idea is to do a password callback
278 to the calling application. The callback comes from within gensec */
280 static void manage_gensec_get_pw_request(enum stdio_helper_mode stdio_helper_mode,
281 struct loadparm_context *lp_ctx,
282 char *buf, int length, void **private,
283 unsigned int mux_id, void **password)
286 if (strlen(buf) < 2) {
287 DEBUG(1, ("query [%s] invalid", buf));
288 mux_printf(mux_id, "BH\n");
292 if (strlen(buf) > 3) {
293 in = base64_decode_data_blob(NULL, buf + 3);
295 in = data_blob(NULL, 0);
298 if (strncmp(buf, "PW ", 3) == 0) {
300 *password = talloc_strndup(*private /* hopefully the right gensec context, useful to use for talloc */,
301 (const char *)in.data, in.length);
303 if (*password == NULL) {
304 DEBUG(1, ("Out of memory\n"));
305 mux_printf(mux_id, "BH\n");
310 mux_printf(mux_id, "OK\n");
314 DEBUG(1, ("Asked for (and expected) a password\n"));
315 mux_printf(mux_id, "BH\n");
320 * Callback for password credentials. This is not async, and when
321 * GENSEC and the credentials code is made async, it will look rather
325 static const char *get_password(struct cli_credentials *credentials)
327 char *password = NULL;
329 /* Ask for a password */
330 mux_printf((unsigned int)credentials->priv_data, "PW\n");
331 credentials->priv_data = NULL;
333 manage_squid_request(cmdline_lp_ctx, NUM_HELPER_MODES /* bogus */, manage_gensec_get_pw_request, (void **)&password);
338 Check if a string is part of a list.
340 static bool in_list(const char *s, const char *list, bool casesensitive)
348 while (next_token(&p, tok, LIST_SEP, sizeof(tok))) {
349 if ((casesensitive?strcmp:strcasecmp_m)(tok,s) == 0)
355 static void gensec_want_feature_list(struct gensec_security *state, char* feature_list)
357 if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) {
358 DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n"));
359 gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY);
361 if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) {
362 DEBUG(10, ("want GENSEC_FEATURE_SIGN\n"));
363 gensec_want_feature(state, GENSEC_FEATURE_SIGN);
365 if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) {
366 DEBUG(10, ("want GENSEC_FEATURE_SEAL\n"));
367 gensec_want_feature(state, GENSEC_FEATURE_SEAL);
371 static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
372 struct loadparm_context *lp_ctx,
373 char *buf, int length, void **private,
374 unsigned int mux_id, void **private2)
377 DATA_BLOB out = data_blob(NULL, 0);
378 char *out_base64 = NULL;
379 const char *reply_arg = NULL;
380 struct gensec_ntlm_state {
381 struct gensec_security *gensec_state;
382 const char *set_password;
384 struct gensec_ntlm_state *state;
385 struct event_context *ev;
386 struct messaging_context *msg;
390 const char *reply_code;
391 struct cli_credentials *creds;
393 static char *want_feature_list = NULL;
394 static DATA_BLOB session_key;
399 state = (struct gensec_ntlm_state *)*private;
401 state = talloc_zero(NULL, struct gensec_ntlm_state);
403 mux_printf(mux_id, "BH No Memory\n");
408 state->set_password = opt_password;
412 if (strlen(buf) < 2) {
413 DEBUG(1, ("query [%s] invalid", buf));
414 mux_printf(mux_id, "BH\n");
418 if (strlen(buf) > 3) {
419 if(strncmp(buf, "SF ", 3) == 0) {
420 DEBUG(10, ("Setting flags to negotiate\n"));
421 talloc_free(want_feature_list);
422 want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
423 mux_printf(mux_id, "OK\n");
426 in = base64_decode_data_blob(NULL, buf + 3);
428 in = data_blob(NULL, 0);
431 if (strncmp(buf, "YR", 2) == 0) {
432 if (state->gensec_state) {
433 talloc_free(state->gensec_state);
434 state->gensec_state = NULL;
436 } else if ( (strncmp(buf, "OK", 2) == 0)) {
437 /* Just return BH, like ntlm_auth from Samba 3 does. */
438 mux_printf(mux_id, "BH\n");
441 } else if ( (strncmp(buf, "TT ", 3) != 0) &&
442 (strncmp(buf, "KK ", 3) != 0) &&
443 (strncmp(buf, "AF ", 3) != 0) &&
444 (strncmp(buf, "NA ", 3) != 0) &&
445 (strncmp(buf, "UG", 2) != 0) &&
446 (strncmp(buf, "PW ", 3) != 0) &&
447 (strncmp(buf, "GK", 2) != 0) &&
448 (strncmp(buf, "GF", 2) != 0)) {
449 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
450 mux_printf(mux_id, "BH\n");
456 if (!(state->gensec_state)) {
457 switch (stdio_helper_mode) {
458 case GSS_SPNEGO_CLIENT:
459 case NTLMSSP_CLIENT_1:
460 /* setup the client side */
462 nt_status = gensec_client_start(NULL, &state->gensec_state, NULL, lp_ctx);
463 if (!NT_STATUS_IS_OK(nt_status)) {
468 case GSS_SPNEGO_SERVER:
469 case SQUID_2_5_NTLMSSP:
470 ev = event_context_init(state);
474 msg = messaging_client_init(state, lp_messaging_path(state, lp_ctx), ev);
478 if (!NT_STATUS_IS_OK(gensec_server_start(state, ev, lp_ctx, msg, &state->gensec_state))) {
486 creds = cli_credentials_init(state->gensec_state);
487 cli_credentials_set_conf(creds, lp_ctx);
489 cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
492 cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
494 if (state->set_password) {
495 cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
497 cli_credentials_set_password_callback(creds, get_password);
498 creds->priv_data = (void*)mux_id;
500 if (opt_workstation) {
501 cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
504 switch (stdio_helper_mode) {
505 case GSS_SPNEGO_SERVER:
506 case SQUID_2_5_NTLMSSP:
507 cli_credentials_set_machine_account(creds, lp_ctx);
513 gensec_set_credentials(state->gensec_state, creds);
514 gensec_want_feature_list(state->gensec_state, want_feature_list);
516 switch (stdio_helper_mode) {
517 case GSS_SPNEGO_CLIENT:
518 case GSS_SPNEGO_SERVER:
519 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
524 case NTLMSSP_CLIENT_1:
529 case SQUID_2_5_NTLMSSP:
530 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
536 if (!NT_STATUS_IS_OK(nt_status)) {
537 DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
538 mux_printf(mux_id, "BH\n");
545 mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
547 if (strncmp(buf, "PW ", 3) == 0) {
548 state->set_password = talloc_strndup(state,
549 (const char *)in.data,
552 cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
555 mux_printf(mux_id, "OK\n");
557 talloc_free(mem_ctx);
561 if (strncmp(buf, "UG", 2) == 0) {
563 char *grouplist = NULL;
564 struct auth_session_info *session_info;
566 nt_status = gensec_session_info(state->gensec_state, &session_info);
567 if (!NT_STATUS_IS_OK(nt_status)) {
568 DEBUG(1, ("gensec_session_info failed: %s\n", nt_errstr(nt_status)));
569 mux_printf(mux_id, "BH %s\n", nt_errstr(nt_status));
571 talloc_free(mem_ctx);
575 /* get the string onto the context */
576 grouplist = talloc_strdup(mem_ctx, "");
578 for (i=0; i<session_info->security_token->num_sids; i++) {
579 struct security_token *token = session_info->security_token;
580 const char *sidstr = dom_sid_string(session_info,
582 grouplist = talloc_asprintf_append_buffer(grouplist, "%s,", sidstr);
585 mux_printf(mux_id, "GL %s\n", grouplist);
586 talloc_free(session_info);
588 talloc_free(mem_ctx);
592 if (strncmp(buf, "GK", 2) == 0) {
594 DEBUG(10, ("Requested session key\n"));
595 nt_status = gensec_session_key(state->gensec_state, &session_key);
596 if(!NT_STATUS_IS_OK(nt_status)) {
597 DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
598 mux_printf(mux_id, "BH No session key\n");
599 talloc_free(mem_ctx);
602 base64_key = base64_encode_data_blob(state, session_key);
603 mux_printf(mux_id, "GK %s\n", base64_key);
604 talloc_free(base64_key);
606 talloc_free(mem_ctx);
610 if (strncmp(buf, "GF", 2) == 0) {
611 struct gensec_ntlmssp_state *gensec_ntlmssp_state;
614 gensec_ntlmssp_state = talloc_get_type(state->gensec_state->private_data,
615 struct gensec_ntlmssp_state);
616 neg_flags = gensec_ntlmssp_state->neg_flags;
618 DEBUG(10, ("Requested negotiated feature flags\n"));
619 mux_printf(mux_id, "GF 0x%08x\n", neg_flags);
623 nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out);
625 /* don't leak 'bad password'/'no such user' info to the network client */
626 nt_status = auth_nt_status_squash(nt_status);
629 out_base64 = base64_encode_data_blob(mem_ctx, out);
634 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
638 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
640 } else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
647 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
649 reply_arg = nt_errstr(nt_status);
650 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
651 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
653 reply_arg = nt_errstr(nt_status);
654 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
655 } else if (!NT_STATUS_IS_OK(nt_status)) {
657 reply_arg = nt_errstr(nt_status);
658 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
659 } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
660 struct auth_session_info *session_info;
662 nt_status = gensec_session_info(state->gensec_state, &session_info);
663 if (!NT_STATUS_IS_OK(nt_status)) {
665 reply_arg = nt_errstr(nt_status);
666 DEBUG(1, ("GENSEC failed to retreive the session info: %s\n", nt_errstr(nt_status)));
670 reply_arg = talloc_asprintf(state->gensec_state,
671 "%s%s%s", session_info->server_info->domain_name,
672 lp_winbind_separator(lp_ctx), session_info->server_info->account_name);
673 talloc_free(session_info);
675 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
677 reply_arg = out_base64;
682 switch (stdio_helper_mode) {
683 case GSS_SPNEGO_SERVER:
684 mux_printf(mux_id, "%s %s %s\n", reply_code,
685 out_base64 ? out_base64 : "*",
686 reply_arg ? reply_arg : "*");
690 mux_printf(mux_id, "%s %s\n", reply_code, out_base64);
691 } else if (reply_arg) {
692 mux_printf(mux_id, "%s %s\n", reply_code, reply_arg);
694 mux_printf(mux_id, "%s\n", reply_code);
698 talloc_free(mem_ctx);
702 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
703 struct loadparm_context *lp_ctx,
704 char *buf, int length, void **private,
705 unsigned int mux_id, void **private2)
707 char *request, *parameter;
708 static DATA_BLOB challenge;
709 static DATA_BLOB lm_response;
710 static DATA_BLOB nt_response;
711 static char *full_username;
712 static char *username;
714 static char *plaintext_password;
715 static bool ntlm_server_1_user_session_key;
716 static bool ntlm_server_1_lm_session_key;
718 if (strequal(buf, ".")) {
719 if (!full_username && !username) {
720 mux_printf(mux_id, "Error: No username supplied!\n");
721 } else if (plaintext_password) {
722 /* handle this request as plaintext */
723 if (!full_username) {
724 if (asprintf(&full_username, "%s%c%s", domain, *lp_winbind_separator(lp_ctx), username) == -1) {
725 mux_printf(mux_id, "Error: Out of memory in asprintf!\n.\n");
729 if (check_plaintext_auth(full_username, plaintext_password, false)) {
730 mux_printf(mux_id, "Authenticated: Yes\n");
732 mux_printf(mux_id, "Authenticated: No\n");
734 } else if (!lm_response.data && !nt_response.data) {
735 mux_printf(mux_id, "Error: No password supplied!\n");
736 } else if (!challenge.data) {
737 mux_printf(mux_id, "Error: No lanman-challenge supplied!\n");
739 char *error_string = NULL;
741 DATA_BLOB user_session_key;
744 if (full_username && !username) {
748 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain,
749 *lp_winbind_separator(lp_ctx))) {
750 /* username might be 'tainted', don't print into our new-line deleimianted stream */
751 mux_printf(mux_id, "Error: Could not parse into domain and username\n");
755 username = smb_xstrdup(fstr_user);
756 domain = smb_xstrdup(fstr_domain);
760 domain = smb_xstrdup(lp_workgroup(lp_ctx));
763 if (ntlm_server_1_lm_session_key)
764 flags |= NTLM_AUTH_FLAG_LMKEY;
766 if (ntlm_server_1_user_session_key)
767 flags |= NTLM_AUTH_FLAG_USER_SESSION_KEY;
769 if (!NT_STATUS_IS_OK(
770 local_pw_check_specified(lp_ctx,
773 lp_netbios_name(lp_ctx),
783 mux_printf(mux_id, "Authenticated: No\n");
784 mux_printf(mux_id, "Authentication-Error: %s\n.\n", error_string);
785 SAFE_FREE(error_string);
787 static char zeros[16];
789 char *hex_user_session_key;
791 mux_printf(mux_id, "Authenticated: Yes\n");
793 if (ntlm_server_1_lm_session_key
795 && (memcmp(zeros, lm_key.data,
796 lm_key.length) != 0)) {
797 hex_encode(lm_key.data,
800 mux_printf(mux_id, "LANMAN-Session-Key: %s\n", hex_lm_key);
801 SAFE_FREE(hex_lm_key);
804 if (ntlm_server_1_user_session_key
805 && user_session_key.length
806 && (memcmp(zeros, user_session_key.data,
807 user_session_key.length) != 0)) {
808 hex_encode(user_session_key.data,
809 user_session_key.length,
810 &hex_user_session_key);
811 mux_printf(mux_id, "User-Session-Key: %s\n", hex_user_session_key);
812 SAFE_FREE(hex_user_session_key);
816 /* clear out the state */
817 challenge = data_blob(NULL, 0);
818 nt_response = data_blob(NULL, 0);
819 lm_response = data_blob(NULL, 0);
820 SAFE_FREE(full_username);
823 SAFE_FREE(plaintext_password);
824 ntlm_server_1_user_session_key = false;
825 ntlm_server_1_lm_session_key = false;
826 mux_printf(mux_id, ".\n");
833 /* Indicates a base64 encoded structure */
834 parameter = strstr(request, ":: ");
836 parameter = strstr(request, ": ");
839 DEBUG(0, ("Parameter not found!\n"));
840 mux_printf(mux_id, "Error: Parameter not found!\n.\n");
857 base64_decode_inplace(parameter);
860 if (strequal(request, "LANMAN-Challenge")) {
861 challenge = strhex_to_data_blob(parameter);
862 if (challenge.length != 8) {
863 mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
865 (int)challenge.length);
866 challenge = data_blob(NULL, 0);
868 } else if (strequal(request, "NT-Response")) {
869 nt_response = strhex_to_data_blob(parameter);
870 if (nt_response.length < 24) {
871 mux_printf(mux_id, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
873 (int)nt_response.length);
874 nt_response = data_blob(NULL, 0);
876 } else if (strequal(request, "LANMAN-Response")) {
877 lm_response = strhex_to_data_blob(parameter);
878 if (lm_response.length != 24) {
879 mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
881 (int)lm_response.length);
882 lm_response = data_blob(NULL, 0);
884 } else if (strequal(request, "Password")) {
885 plaintext_password = smb_xstrdup(parameter);
886 } else if (strequal(request, "NT-Domain")) {
887 domain = smb_xstrdup(parameter);
888 } else if (strequal(request, "Username")) {
889 username = smb_xstrdup(parameter);
890 } else if (strequal(request, "Full-Username")) {
891 full_username = smb_xstrdup(parameter);
892 } else if (strequal(request, "Request-User-Session-Key")) {
893 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
894 } else if (strequal(request, "Request-LanMan-Session-Key")) {
895 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
897 mux_printf(mux_id, "Error: Unknown request %s\n.\n", request);
901 static void manage_squid_request(struct loadparm_context *lp_ctx, enum stdio_helper_mode helper_mode,
902 stdio_helper_function fn, void **private2)
905 char tmp[INITIAL_BUFFER_SIZE+1];
906 unsigned int mux_id = 0;
907 int length, buf_size = 0;
910 unsigned int max_mux;
911 void **private_pointers;
914 static struct mux_private *mux_private;
915 static void *normal_private;
918 buf = talloc_strdup(NULL, "");
921 DEBUG(0, ("Failed to allocate memory for reading the input "
923 x_fprintf(x_stdout, "ERR\n");
928 /* this is not a typo - x_fgets doesn't work too well under
930 if (fgets(tmp, INITIAL_BUFFER_SIZE, stdin) == NULL) {
932 DEBUG(1, ("fgets() failed! dying..... errno=%d "
933 "(%s)\n", ferror(stdin),
934 strerror(ferror(stdin))));
936 exit(1); /* BIIG buffer */
941 buf = talloc_strdup_append_buffer(buf, tmp);
942 buf_size += INITIAL_BUFFER_SIZE;
944 if (buf_size > MAX_BUFFER_SIZE) {
945 DEBUG(0, ("Invalid Request (too large)\n"));
946 x_fprintf(x_stdout, "ERR\n");
951 c = strchr(buf, '\n');
957 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
959 if (buf[0] == '\0') {
960 DEBUG(0, ("Invalid Request (empty)\n"));
961 x_fprintf(x_stdout, "ERR\n");
967 if (sscanf(buf, "%u ", &mux_id) != 1) {
968 DEBUG(0, ("Invalid Request - no multiplex id\n"));
969 x_fprintf(x_stdout, "ERR\n");
974 mux_private = talloc(NULL, struct mux_private);
975 mux_private->max_mux = 0;
976 mux_private->private_pointers = NULL;
981 DEBUG(0, ("Invalid Request - no data after multiplex id\n"));
982 x_fprintf(x_stdout, "ERR\n");
987 if (mux_id >= mux_private->max_mux) {
988 unsigned int prev_max = mux_private->max_mux;
989 mux_private->max_mux = mux_id + 1;
990 mux_private->private_pointers
991 = talloc_realloc(mux_private,
992 mux_private->private_pointers,
993 void *, mux_private->max_mux);
994 memset(&mux_private->private_pointers[prev_max], '\0',
995 (sizeof(*mux_private->private_pointers) * (mux_private->max_mux - prev_max)));
998 private = &mux_private->private_pointers[mux_id];
1001 private = &normal_private;
1004 fn(helper_mode, lp_ctx, c, length, private, mux_id, private2);
1008 static void squid_stream(struct loadparm_context *lp_ctx,
1009 enum stdio_helper_mode stdio_mode,
1010 stdio_helper_function fn) {
1011 /* initialize FDescs */
1012 x_setbuf(x_stdout, NULL);
1013 x_setbuf(x_stderr, NULL);
1015 manage_squid_request(lp_ctx, stdio_mode, fn, NULL);
1023 OPT_USERNAME = 1000,
1032 OPT_USER_SESSION_KEY,
1034 OPT_REQUIRE_MEMBERSHIP,
1036 OPT_USE_CACHED_CREDS,
1039 int main(int argc, const char **argv)
1041 static const char *helper_protocol;
1046 /* NOTE: DO NOT change this interface without considering the implications!
1047 This is an external interface, which other programs will use to interact
1051 /* We do not use single-letter command abbreviations, because they harm future
1052 interface stability. */
1054 struct poptOption long_options[] = {
1056 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1057 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1058 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1059 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_PASSWORD, "Username"},
1060 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1061 { "multiplex", 0, POPT_ARG_NONE, &opt_multiplex, OPT_MULTIPLEX, "Multiplex Mode"},
1062 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "silently ignored for compatibility reasons"},
1068 /* Samba client initialisation */
1070 setup_logging(NULL, DEBUG_STDERR);
1074 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1076 /* Parse command line options */
1079 poptPrintHelp(pc, stderr, 0);
1083 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1084 POPT_CONTEXT_KEEP_FIRST);
1086 while((opt = poptGetNextOpt(pc)) != -1) {
1092 fprintf(stderr, "%s: %s\n",
1093 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1098 gensec_init(cmdline_lp_ctx);
1100 if (opt_domain == NULL) {
1101 opt_domain = lp_workgroup(cmdline_lp_ctx);
1104 if (helper_protocol) {
1106 for (i=0; i<NUM_HELPER_MODES; i++) {
1107 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
1108 squid_stream(cmdline_lp_ctx, stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
1112 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
1114 for (i=0; i<NUM_HELPER_MODES; i++) {
1115 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
1121 if (!opt_username) {
1122 x_fprintf(x_stderr, "username must be specified!\n\n");
1123 poptPrintHelp(pc, stderr, 0);
1127 if (opt_workstation == NULL) {
1128 opt_workstation = lp_netbios_name(cmdline_lp_ctx);
1131 if (!opt_password) {
1132 opt_password = getpass("password: ");
1138 asprintf(&user, "%s%c%s", opt_domain, *lp_winbind_separator(cmdline_lp_ctx), opt_username);
1139 if (!check_plaintext_auth(user, opt_password, true)) {
1146 poptFreeContext(pc);