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(enum stdio_helper_mode helper_mode,
81 stdio_helper_function fn, void **private2);
84 enum stdio_helper_mode mode;
86 stdio_helper_function fn;
87 } stdio_helper_protocols[] = {
88 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
89 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
90 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_gensec_request},
91 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gensec_request},
92 { GSS_SPNEGO_SERVER, "gss-spnego", manage_gensec_request},
93 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_gensec_request},
94 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
95 { NUM_HELPER_MODES, NULL, NULL}
98 extern int winbindd_fd;
100 static const char *opt_username;
101 static const char *opt_domain;
102 static const char *opt_workstation;
103 static const char *opt_password;
104 static int opt_multiplex;
105 static int use_cached_creds;
108 static void mux_printf(unsigned int mux_id, const char *format, ...) PRINTF_ATTRIBUTE(2, 3);
110 static void mux_printf(unsigned int mux_id, const char *format, ...)
115 x_fprintf(x_stdout, "%d ", mux_id);
118 va_start(ap, format);
119 x_vfprintf(x_stdout, format, ap);
125 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
126 form DOMAIN/user into a domain and a user */
128 static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
132 char *p = strchr(domuser,*lp_winbind_separator(global_loadparm));
139 fstrcpy(domain, domuser);
140 domain[PTR_DIFF(p, domuser)] = 0;
146 * Decode a base64 string into a DATA_BLOB - simple and slow algorithm
148 static DATA_BLOB base64_decode_data_blob(TALLOC_CTX *mem_ctx, const char *s)
150 DATA_BLOB ret = data_blob_talloc(mem_ctx, s, strlen(s)+1);
151 ret.length = ldb_base64_decode((char *)ret.data);
156 * Encode a base64 string into a talloc()ed string caller to free.
158 static char *base64_encode_data_blob(TALLOC_CTX *mem_ctx, DATA_BLOB data)
160 return ldb_base64_encode(mem_ctx, (const char *)data.data, data.length);
164 * Decode a base64 string in-place - wrapper for the above
166 static void base64_decode_inplace(char *s)
168 ldb_base64_decode(s);
173 /* Authenticate a user with a plaintext password */
175 static bool check_plaintext_auth(const char *user, const char *pass,
176 bool stdout_diagnostics)
178 return (strcmp(pass, opt_password) == 0);
181 /* authenticate a user with an encrypted username/password */
183 static NTSTATUS local_pw_check_specified(struct loadparm_context *lp_ctx,
184 const char *username,
186 const char *workstation,
187 const DATA_BLOB *challenge,
188 const DATA_BLOB *lm_response,
189 const DATA_BLOB *nt_response,
191 DATA_BLOB *lm_session_key,
192 DATA_BLOB *user_session_key,
197 struct samr_Password lm_pw, nt_pw;
198 struct samr_Password *lm_pwd, *nt_pwd;
199 TALLOC_CTX *mem_ctx = talloc_init("local_pw_check_specified");
201 nt_status = NT_STATUS_NO_MEMORY;
204 E_md4hash(opt_password, nt_pw.hash);
205 if (E_deshash(opt_password, lm_pw.hash)) {
213 nt_status = ntlm_password_check(mem_ctx,
215 MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT |
216 MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT,
223 lm_pwd, nt_pwd, user_session_key, lm_session_key);
225 if (NT_STATUS_IS_OK(nt_status)) {
229 *lp_winbind_separator(global_loadparm),
233 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
234 domain, username, workstation,
235 nt_errstr(nt_status)));
237 talloc_free(mem_ctx);
240 *error_string = strdup(nt_errstr(nt_status));
247 static void manage_squid_basic_request(enum stdio_helper_mode stdio_helper_mode,
248 struct loadparm_context *lp_ctx,
249 char *buf, int length, void **private,
250 unsigned int mux_id, void **private2)
255 pass = memchr(buf, ' ', length);
257 DEBUG(2, ("Password not found. Denying access\n"));
258 mux_printf(mux_id, "ERR\n");
264 if (stdio_helper_mode == SQUID_2_5_BASIC) {
265 rfc1738_unescape(user);
266 rfc1738_unescape(pass);
269 if (check_plaintext_auth(user, pass, false)) {
270 mux_printf(mux_id, "OK\n");
272 mux_printf(mux_id, "ERR\n");
276 /* This is a bit hairy, but the basic idea is to do a password callback
277 to the calling application. The callback comes from within gensec */
279 static void manage_gensec_get_pw_request(enum stdio_helper_mode stdio_helper_mode,
280 struct loadparm_context *lp_ctx,
281 char *buf, int length, void **private,
282 unsigned int mux_id, void **password)
285 if (strlen(buf) < 2) {
286 DEBUG(1, ("query [%s] invalid", buf));
287 mux_printf(mux_id, "BH\n");
291 if (strlen(buf) > 3) {
292 in = base64_decode_data_blob(NULL, buf + 3);
294 in = data_blob(NULL, 0);
297 if (strncmp(buf, "PW ", 3) == 0) {
299 *password = talloc_strndup(*private /* hopefully the right gensec context, useful to use for talloc */,
300 (const char *)in.data, in.length);
302 if (*password == NULL) {
303 DEBUG(1, ("Out of memory\n"));
304 mux_printf(mux_id, "BH\n");
309 mux_printf(mux_id, "OK\n");
313 DEBUG(1, ("Asked for (and expected) a password\n"));
314 mux_printf(mux_id, "BH\n");
319 * Callback for password credentials. This is not async, and when
320 * GENSEC and the credentials code is made async, it will look rather
324 static const char *get_password(struct cli_credentials *credentials)
326 char *password = NULL;
328 /* Ask for a password */
329 mux_printf((unsigned int)credentials->priv_data, "PW\n");
330 credentials->priv_data = NULL;
332 manage_squid_request(NUM_HELPER_MODES /* bogus */, manage_gensec_get_pw_request, (void **)&password);
337 Check if a string is part of a list.
339 static bool in_list(const char *s, const char *list, bool casesensitive)
347 while (next_token(&p, tok, LIST_SEP, sizeof(tok))) {
348 if ((casesensitive?strcmp:strcasecmp_m)(tok,s) == 0)
354 static void gensec_want_feature_list(struct gensec_security *state, char* feature_list)
356 if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) {
357 DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n"));
358 gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY);
360 if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) {
361 DEBUG(10, ("want GENSEC_FEATURE_SIGN\n"));
362 gensec_want_feature(state, GENSEC_FEATURE_SIGN);
364 if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) {
365 DEBUG(10, ("want GENSEC_FEATURE_SEAL\n"));
366 gensec_want_feature(state, GENSEC_FEATURE_SEAL);
370 static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
371 struct loadparm_context *lp_ctx,
372 char *buf, int length, void **private,
373 unsigned int mux_id, void **private2)
376 DATA_BLOB out = data_blob(NULL, 0);
377 char *out_base64 = NULL;
378 const char *reply_arg = NULL;
379 struct gensec_ntlm_state {
380 struct gensec_security *gensec_state;
381 const char *set_password;
383 struct gensec_ntlm_state *state;
384 struct event_context *ev;
385 struct messaging_context *msg;
389 const char *reply_code;
390 struct cli_credentials *creds;
392 static char *want_feature_list = NULL;
393 static DATA_BLOB session_key;
398 state = (struct gensec_ntlm_state *)*private;
400 state = talloc_zero(NULL, struct gensec_ntlm_state);
402 mux_printf(mux_id, "BH No Memory\n");
407 state->set_password = opt_password;
411 if (strlen(buf) < 2) {
412 DEBUG(1, ("query [%s] invalid", buf));
413 mux_printf(mux_id, "BH\n");
417 if (strlen(buf) > 3) {
418 if(strncmp(buf, "SF ", 3) == 0) {
419 DEBUG(10, ("Setting flags to negotiate\n"));
420 talloc_free(want_feature_list);
421 want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
422 mux_printf(mux_id, "OK\n");
425 in = base64_decode_data_blob(NULL, buf + 3);
427 in = data_blob(NULL, 0);
430 if (strncmp(buf, "YR", 2) == 0) {
431 if (state->gensec_state) {
432 talloc_free(state->gensec_state);
433 state->gensec_state = NULL;
435 } else if ( (strncmp(buf, "OK", 2) == 0)) {
436 /* Just return BH, like ntlm_auth from Samba 3 does. */
437 mux_printf(mux_id, "BH\n");
440 } else if ( (strncmp(buf, "TT ", 3) != 0) &&
441 (strncmp(buf, "KK ", 3) != 0) &&
442 (strncmp(buf, "AF ", 3) != 0) &&
443 (strncmp(buf, "NA ", 3) != 0) &&
444 (strncmp(buf, "UG", 2) != 0) &&
445 (strncmp(buf, "PW ", 3) != 0) &&
446 (strncmp(buf, "GK", 2) != 0) &&
447 (strncmp(buf, "GF", 2) != 0)) {
448 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
449 mux_printf(mux_id, "BH\n");
455 if (!(state->gensec_state)) {
456 switch (stdio_helper_mode) {
457 case GSS_SPNEGO_CLIENT:
458 case NTLMSSP_CLIENT_1:
459 /* setup the client side */
461 nt_status = gensec_client_start(NULL, &state->gensec_state, NULL);
462 if (!NT_STATUS_IS_OK(nt_status)) {
467 case GSS_SPNEGO_SERVER:
468 case SQUID_2_5_NTLMSSP:
469 ev = event_context_init(state);
473 msg = messaging_client_init(state, lp_messaging_path(state, global_loadparm), ev);
477 if (!NT_STATUS_IS_OK(gensec_server_start(state, ev, msg, &state->gensec_state))) {
485 creds = cli_credentials_init(state->gensec_state);
486 cli_credentials_set_conf(creds, global_loadparm);
488 cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
491 cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
493 if (state->set_password) {
494 cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
496 cli_credentials_set_password_callback(creds, get_password);
497 creds->priv_data = (void*)mux_id;
499 if (opt_workstation) {
500 cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
503 switch (stdio_helper_mode) {
504 case GSS_SPNEGO_SERVER:
505 case SQUID_2_5_NTLMSSP:
506 cli_credentials_set_machine_account(creds);
512 gensec_set_credentials(state->gensec_state, creds);
513 gensec_want_feature_list(state->gensec_state, want_feature_list);
515 switch (stdio_helper_mode) {
516 case GSS_SPNEGO_CLIENT:
517 case GSS_SPNEGO_SERVER:
518 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
523 case NTLMSSP_CLIENT_1:
528 case SQUID_2_5_NTLMSSP:
529 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
535 if (!NT_STATUS_IS_OK(nt_status)) {
536 DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
537 mux_printf(mux_id, "BH\n");
544 mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
546 if (strncmp(buf, "PW ", 3) == 0) {
547 state->set_password = talloc_strndup(state,
548 (const char *)in.data,
551 cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
554 mux_printf(mux_id, "OK\n");
556 talloc_free(mem_ctx);
560 if (strncmp(buf, "UG", 2) == 0) {
562 char *grouplist = NULL;
563 struct auth_session_info *session_info;
565 nt_status = gensec_session_info(state->gensec_state, &session_info);
566 if (!NT_STATUS_IS_OK(nt_status)) {
567 DEBUG(1, ("gensec_session_info failed: %s\n", nt_errstr(nt_status)));
568 mux_printf(mux_id, "BH %s\n", nt_errstr(nt_status));
570 talloc_free(mem_ctx);
574 /* get the string onto the context */
575 grouplist = talloc_strdup(mem_ctx, "");
577 for (i=0; i<session_info->security_token->num_sids; i++) {
578 struct security_token *token = session_info->security_token;
579 const char *sidstr = dom_sid_string(session_info,
581 grouplist = talloc_asprintf_append_buffer(grouplist, "%s,", sidstr);
584 mux_printf(mux_id, "GL %s\n", grouplist);
585 talloc_free(session_info);
587 talloc_free(mem_ctx);
591 if (strncmp(buf, "GK", 2) == 0) {
593 DEBUG(10, ("Requested session key\n"));
594 nt_status = gensec_session_key(state->gensec_state, &session_key);
595 if(!NT_STATUS_IS_OK(nt_status)) {
596 DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
597 mux_printf(mux_id, "BH No session key\n");
598 talloc_free(mem_ctx);
601 base64_key = base64_encode_data_blob(state, session_key);
602 mux_printf(mux_id, "GK %s\n", base64_key);
603 talloc_free(base64_key);
605 talloc_free(mem_ctx);
609 if (strncmp(buf, "GF", 2) == 0) {
610 struct gensec_ntlmssp_state *gensec_ntlmssp_state;
613 gensec_ntlmssp_state = talloc_get_type(state->gensec_state->private_data,
614 struct gensec_ntlmssp_state);
615 neg_flags = gensec_ntlmssp_state->neg_flags;
617 DEBUG(10, ("Requested negotiated feature flags\n"));
618 mux_printf(mux_id, "GF 0x%08x\n", neg_flags);
622 nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out);
624 /* don't leak 'bad password'/'no such user' info to the network client */
625 nt_status = auth_nt_status_squash(nt_status);
628 out_base64 = base64_encode_data_blob(mem_ctx, out);
633 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
637 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
639 } else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
646 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
648 reply_arg = nt_errstr(nt_status);
649 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
650 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
652 reply_arg = nt_errstr(nt_status);
653 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
654 } else if (!NT_STATUS_IS_OK(nt_status)) {
656 reply_arg = nt_errstr(nt_status);
657 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
658 } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
659 struct auth_session_info *session_info;
661 nt_status = gensec_session_info(state->gensec_state, &session_info);
662 if (!NT_STATUS_IS_OK(nt_status)) {
664 reply_arg = nt_errstr(nt_status);
665 DEBUG(1, ("GENSEC failed to retreive the session info: %s\n", nt_errstr(nt_status)));
669 reply_arg = talloc_asprintf(state->gensec_state,
670 "%s%s%s", session_info->server_info->domain_name,
671 lp_winbind_separator(global_loadparm), session_info->server_info->account_name);
672 talloc_free(session_info);
674 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
676 reply_arg = out_base64;
681 switch (stdio_helper_mode) {
682 case GSS_SPNEGO_SERVER:
683 mux_printf(mux_id, "%s %s %s\n", reply_code,
684 out_base64 ? out_base64 : "*",
685 reply_arg ? reply_arg : "*");
689 mux_printf(mux_id, "%s %s\n", reply_code, out_base64);
690 } else if (reply_arg) {
691 mux_printf(mux_id, "%s %s\n", reply_code, reply_arg);
693 mux_printf(mux_id, "%s\n", reply_code);
697 talloc_free(mem_ctx);
701 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
702 struct loadparm_context *lp_ctx,
703 char *buf, int length, void **private,
704 unsigned int mux_id, void **private2)
706 char *request, *parameter;
707 static DATA_BLOB challenge;
708 static DATA_BLOB lm_response;
709 static DATA_BLOB nt_response;
710 static char *full_username;
711 static char *username;
713 static char *plaintext_password;
714 static bool ntlm_server_1_user_session_key;
715 static bool ntlm_server_1_lm_session_key;
717 if (strequal(buf, ".")) {
718 if (!full_username && !username) {
719 mux_printf(mux_id, "Error: No username supplied!\n");
720 } else if (plaintext_password) {
721 /* handle this request as plaintext */
722 if (!full_username) {
723 if (asprintf(&full_username, "%s%c%s", domain, *lp_winbind_separator(lp_ctx), username) == -1) {
724 mux_printf(mux_id, "Error: Out of memory in asprintf!\n.\n");
728 if (check_plaintext_auth(full_username, plaintext_password, false)) {
729 mux_printf(mux_id, "Authenticated: Yes\n");
731 mux_printf(mux_id, "Authenticated: No\n");
733 } else if (!lm_response.data && !nt_response.data) {
734 mux_printf(mux_id, "Error: No password supplied!\n");
735 } else if (!challenge.data) {
736 mux_printf(mux_id, "Error: No lanman-challenge supplied!\n");
738 char *error_string = NULL;
740 DATA_BLOB user_session_key;
743 if (full_username && !username) {
747 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain)) {
748 /* username might be 'tainted', don't print into our new-line deleimianted stream */
749 mux_printf(mux_id, "Error: Could not parse into domain and username\n");
753 username = smb_xstrdup(fstr_user);
754 domain = smb_xstrdup(fstr_domain);
758 domain = smb_xstrdup(lp_workgroup(lp_ctx));
761 if (ntlm_server_1_lm_session_key)
762 flags |= NTLM_AUTH_FLAG_LMKEY;
764 if (ntlm_server_1_user_session_key)
765 flags |= NTLM_AUTH_FLAG_USER_SESSION_KEY;
767 if (!NT_STATUS_IS_OK(
768 local_pw_check_specified(lp_ctx,
771 lp_netbios_name(lp_ctx),
781 mux_printf(mux_id, "Authenticated: No\n");
782 mux_printf(mux_id, "Authentication-Error: %s\n.\n", error_string);
783 SAFE_FREE(error_string);
785 static char zeros[16];
787 char *hex_user_session_key;
789 mux_printf(mux_id, "Authenticated: Yes\n");
791 if (ntlm_server_1_lm_session_key
793 && (memcmp(zeros, lm_key.data,
794 lm_key.length) != 0)) {
795 hex_encode(lm_key.data,
798 mux_printf(mux_id, "LANMAN-Session-Key: %s\n", hex_lm_key);
799 SAFE_FREE(hex_lm_key);
802 if (ntlm_server_1_user_session_key
803 && user_session_key.length
804 && (memcmp(zeros, user_session_key.data,
805 user_session_key.length) != 0)) {
806 hex_encode(user_session_key.data,
807 user_session_key.length,
808 &hex_user_session_key);
809 mux_printf(mux_id, "User-Session-Key: %s\n", hex_user_session_key);
810 SAFE_FREE(hex_user_session_key);
814 /* clear out the state */
815 challenge = data_blob(NULL, 0);
816 nt_response = data_blob(NULL, 0);
817 lm_response = data_blob(NULL, 0);
818 SAFE_FREE(full_username);
821 SAFE_FREE(plaintext_password);
822 ntlm_server_1_user_session_key = false;
823 ntlm_server_1_lm_session_key = false;
824 mux_printf(mux_id, ".\n");
831 /* Indicates a base64 encoded structure */
832 parameter = strstr(request, ":: ");
834 parameter = strstr(request, ": ");
837 DEBUG(0, ("Parameter not found!\n"));
838 mux_printf(mux_id, "Error: Parameter not found!\n.\n");
855 base64_decode_inplace(parameter);
858 if (strequal(request, "LANMAN-Challenge")) {
859 challenge = strhex_to_data_blob(parameter);
860 if (challenge.length != 8) {
861 mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
863 (int)challenge.length);
864 challenge = data_blob(NULL, 0);
866 } else if (strequal(request, "NT-Response")) {
867 nt_response = strhex_to_data_blob(parameter);
868 if (nt_response.length < 24) {
869 mux_printf(mux_id, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
871 (int)nt_response.length);
872 nt_response = data_blob(NULL, 0);
874 } else if (strequal(request, "LANMAN-Response")) {
875 lm_response = strhex_to_data_blob(parameter);
876 if (lm_response.length != 24) {
877 mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
879 (int)lm_response.length);
880 lm_response = data_blob(NULL, 0);
882 } else if (strequal(request, "Password")) {
883 plaintext_password = smb_xstrdup(parameter);
884 } else if (strequal(request, "NT-Domain")) {
885 domain = smb_xstrdup(parameter);
886 } else if (strequal(request, "Username")) {
887 username = smb_xstrdup(parameter);
888 } else if (strequal(request, "Full-Username")) {
889 full_username = smb_xstrdup(parameter);
890 } else if (strequal(request, "Request-User-Session-Key")) {
891 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
892 } else if (strequal(request, "Request-LanMan-Session-Key")) {
893 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
895 mux_printf(mux_id, "Error: Unknown request %s\n.\n", request);
899 static void manage_squid_request(enum stdio_helper_mode helper_mode,
900 stdio_helper_function fn, void **private2)
903 char tmp[INITIAL_BUFFER_SIZE+1];
904 unsigned int mux_id = 0;
905 int length, buf_size = 0;
908 unsigned int max_mux;
909 void **private_pointers;
912 static struct mux_private *mux_private;
913 static void *normal_private;
916 buf = talloc_strdup(NULL, "");
919 DEBUG(0, ("Failed to allocate memory for reading the input "
921 x_fprintf(x_stdout, "ERR\n");
926 /* this is not a typo - x_fgets doesn't work too well under
928 if (fgets(tmp, INITIAL_BUFFER_SIZE, stdin) == NULL) {
930 DEBUG(1, ("fgets() failed! dying..... errno=%d "
931 "(%s)\n", ferror(stdin),
932 strerror(ferror(stdin))));
934 exit(1); /* BIIG buffer */
939 buf = talloc_strdup_append_buffer(buf, tmp);
940 buf_size += INITIAL_BUFFER_SIZE;
942 if (buf_size > MAX_BUFFER_SIZE) {
943 DEBUG(0, ("Invalid Request (too large)\n"));
944 x_fprintf(x_stdout, "ERR\n");
949 c = strchr(buf, '\n');
955 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
957 if (buf[0] == '\0') {
958 DEBUG(0, ("Invalid Request (empty)\n"));
959 x_fprintf(x_stdout, "ERR\n");
965 if (sscanf(buf, "%u ", &mux_id) != 1) {
966 DEBUG(0, ("Invalid Request - no multiplex id\n"));
967 x_fprintf(x_stdout, "ERR\n");
972 mux_private = talloc(NULL, struct mux_private);
973 mux_private->max_mux = 0;
974 mux_private->private_pointers = NULL;
979 DEBUG(0, ("Invalid Request - no data after multiplex id\n"));
980 x_fprintf(x_stdout, "ERR\n");
985 if (mux_id >= mux_private->max_mux) {
986 unsigned int prev_max = mux_private->max_mux;
987 mux_private->max_mux = mux_id + 1;
988 mux_private->private_pointers
989 = talloc_realloc(mux_private,
990 mux_private->private_pointers,
991 void *, mux_private->max_mux);
992 memset(&mux_private->private_pointers[prev_max], '\0',
993 (sizeof(*mux_private->private_pointers) * (mux_private->max_mux - prev_max)));
996 private = &mux_private->private_pointers[mux_id];
999 private = &normal_private;
1002 fn(helper_mode, global_loadparm, c, length, private, mux_id, private2);
1006 static void squid_stream(enum stdio_helper_mode stdio_mode,
1007 stdio_helper_function fn) {
1008 /* initialize FDescs */
1009 x_setbuf(x_stdout, NULL);
1010 x_setbuf(x_stderr, NULL);
1012 manage_squid_request(stdio_mode, fn, NULL);
1020 OPT_USERNAME = 1000,
1029 OPT_USER_SESSION_KEY,
1031 OPT_REQUIRE_MEMBERSHIP,
1033 OPT_USE_CACHED_CREDS,
1036 int main(int argc, const char **argv)
1038 static const char *helper_protocol;
1043 /* NOTE: DO NOT change this interface without considering the implications!
1044 This is an external interface, which other programs will use to interact
1048 /* We do not use single-letter command abbreviations, because they harm future
1049 interface stability. */
1051 struct poptOption long_options[] = {
1053 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1054 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1055 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1056 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_PASSWORD, "Username"},
1057 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1058 { "multiplex", 0, POPT_ARG_NONE, &opt_multiplex, OPT_MULTIPLEX, "Multiplex Mode"},
1059 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "silently ignored for compatibility reasons"},
1065 /* Samba client initialisation */
1067 setup_logging(NULL, DEBUG_STDERR);
1071 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1073 /* Parse command line options */
1076 poptPrintHelp(pc, stderr, 0);
1080 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1081 POPT_CONTEXT_KEEP_FIRST);
1083 while((opt = poptGetNextOpt(pc)) != -1) {
1089 fprintf(stderr, "%s: %s\n",
1090 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1095 gensec_init(global_loadparm);
1097 if (opt_domain == NULL) {
1098 opt_domain = lp_workgroup(global_loadparm);
1101 if (helper_protocol) {
1103 for (i=0; i<NUM_HELPER_MODES; i++) {
1104 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
1105 squid_stream(stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
1109 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
1111 for (i=0; i<NUM_HELPER_MODES; i++) {
1112 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
1118 if (!opt_username) {
1119 x_fprintf(x_stderr, "username must be specified!\n\n");
1120 poptPrintHelp(pc, stderr, 0);
1124 if (opt_workstation == NULL) {
1125 opt_workstation = lp_netbios_name(global_loadparm);
1128 if (!opt_password) {
1129 opt_password = getpass("password: ");
1135 asprintf(&user, "%s%c%s", opt_domain, *lp_winbind_separator(global_loadparm), opt_username);
1136 if (!check_plaintext_auth(user, opt_password, true)) {
1143 poptFreeContext(pc);