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)
343 size_t tok_len = 1024;
349 tok = (char *)malloc(tok_len);
354 while (next_token(&p, tok, LIST_SEP, tok_len)) {
355 if ((casesensitive?strcmp:strcasecmp_m)(tok,s) == 0) {
364 static void gensec_want_feature_list(struct gensec_security *state, char* feature_list)
366 if (in_list("NTLMSSP_FEATURE_SESSION_KEY", feature_list, true)) {
367 DEBUG(10, ("want GENSEC_FEATURE_SESSION_KEY\n"));
368 gensec_want_feature(state, GENSEC_FEATURE_SESSION_KEY);
370 if (in_list("NTLMSSP_FEATURE_SIGN", feature_list, true)) {
371 DEBUG(10, ("want GENSEC_FEATURE_SIGN\n"));
372 gensec_want_feature(state, GENSEC_FEATURE_SIGN);
374 if (in_list("NTLMSSP_FEATURE_SEAL", feature_list, true)) {
375 DEBUG(10, ("want GENSEC_FEATURE_SEAL\n"));
376 gensec_want_feature(state, GENSEC_FEATURE_SEAL);
380 static void manage_gensec_request(enum stdio_helper_mode stdio_helper_mode,
381 struct loadparm_context *lp_ctx,
382 char *buf, int length, void **private,
383 unsigned int mux_id, void **private2)
386 DATA_BLOB out = data_blob(NULL, 0);
387 char *out_base64 = NULL;
388 const char *reply_arg = NULL;
389 struct gensec_ntlm_state {
390 struct gensec_security *gensec_state;
391 const char *set_password;
393 struct gensec_ntlm_state *state;
394 struct event_context *ev;
395 struct messaging_context *msg;
399 const char *reply_code;
400 struct cli_credentials *creds;
402 static char *want_feature_list = NULL;
403 static DATA_BLOB session_key;
408 state = (struct gensec_ntlm_state *)*private;
410 state = talloc_zero(NULL, struct gensec_ntlm_state);
412 mux_printf(mux_id, "BH No Memory\n");
417 state->set_password = opt_password;
421 if (strlen(buf) < 2) {
422 DEBUG(1, ("query [%s] invalid", buf));
423 mux_printf(mux_id, "BH\n");
427 if (strlen(buf) > 3) {
428 if(strncmp(buf, "SF ", 3) == 0) {
429 DEBUG(10, ("Setting flags to negotiate\n"));
430 talloc_free(want_feature_list);
431 want_feature_list = talloc_strndup(state, buf+3, strlen(buf)-3);
432 mux_printf(mux_id, "OK\n");
435 in = base64_decode_data_blob(NULL, buf + 3);
437 in = data_blob(NULL, 0);
440 if (strncmp(buf, "YR", 2) == 0) {
441 if (state->gensec_state) {
442 talloc_free(state->gensec_state);
443 state->gensec_state = NULL;
445 } else if ( (strncmp(buf, "OK", 2) == 0)) {
446 /* Just return BH, like ntlm_auth from Samba 3 does. */
447 mux_printf(mux_id, "BH\n");
450 } else if ( (strncmp(buf, "TT ", 3) != 0) &&
451 (strncmp(buf, "KK ", 3) != 0) &&
452 (strncmp(buf, "AF ", 3) != 0) &&
453 (strncmp(buf, "NA ", 3) != 0) &&
454 (strncmp(buf, "UG", 2) != 0) &&
455 (strncmp(buf, "PW ", 3) != 0) &&
456 (strncmp(buf, "GK", 2) != 0) &&
457 (strncmp(buf, "GF", 2) != 0)) {
458 DEBUG(1, ("SPNEGO request [%s] invalid\n", buf));
459 mux_printf(mux_id, "BH\n");
465 if (!(state->gensec_state)) {
466 switch (stdio_helper_mode) {
467 case GSS_SPNEGO_CLIENT:
468 case NTLMSSP_CLIENT_1:
469 /* setup the client side */
471 nt_status = gensec_client_start(NULL, &state->gensec_state, NULL, lp_ctx);
472 if (!NT_STATUS_IS_OK(nt_status)) {
477 case GSS_SPNEGO_SERVER:
478 case SQUID_2_5_NTLMSSP:
479 ev = event_context_init(state);
483 msg = messaging_client_init(state, lp_messaging_path(state, lp_ctx),
484 lp_iconv_convenience(lp_ctx), ev);
488 if (!NT_STATUS_IS_OK(gensec_server_start(state, ev, lp_ctx, msg, &state->gensec_state))) {
496 creds = cli_credentials_init(state->gensec_state);
497 cli_credentials_set_conf(creds, lp_ctx);
499 cli_credentials_set_username(creds, opt_username, CRED_SPECIFIED);
502 cli_credentials_set_domain(creds, opt_domain, CRED_SPECIFIED);
504 if (state->set_password) {
505 cli_credentials_set_password(creds, state->set_password, CRED_SPECIFIED);
507 cli_credentials_set_password_callback(creds, get_password);
508 creds->priv_data = (void*)mux_id;
510 if (opt_workstation) {
511 cli_credentials_set_workstation(creds, opt_workstation, CRED_SPECIFIED);
514 switch (stdio_helper_mode) {
515 case GSS_SPNEGO_SERVER:
516 case SQUID_2_5_NTLMSSP:
517 cli_credentials_set_machine_account(creds, lp_ctx);
523 gensec_set_credentials(state->gensec_state, creds);
524 gensec_want_feature_list(state->gensec_state, want_feature_list);
526 switch (stdio_helper_mode) {
527 case GSS_SPNEGO_CLIENT:
528 case GSS_SPNEGO_SERVER:
529 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_SPNEGO);
534 case NTLMSSP_CLIENT_1:
539 case SQUID_2_5_NTLMSSP:
540 nt_status = gensec_start_mech_by_oid(state->gensec_state, GENSEC_OID_NTLMSSP);
546 if (!NT_STATUS_IS_OK(nt_status)) {
547 DEBUG(1, ("GENSEC mech failed to start: %s\n", nt_errstr(nt_status)));
548 mux_printf(mux_id, "BH\n");
555 mem_ctx = talloc_named(NULL, 0, "manage_gensec_request internal mem_ctx");
557 if (strncmp(buf, "PW ", 3) == 0) {
558 state->set_password = talloc_strndup(state,
559 (const char *)in.data,
562 cli_credentials_set_password(gensec_get_credentials(state->gensec_state),
565 mux_printf(mux_id, "OK\n");
567 talloc_free(mem_ctx);
571 if (strncmp(buf, "UG", 2) == 0) {
573 char *grouplist = NULL;
574 struct auth_session_info *session_info;
576 nt_status = gensec_session_info(state->gensec_state, &session_info);
577 if (!NT_STATUS_IS_OK(nt_status)) {
578 DEBUG(1, ("gensec_session_info failed: %s\n", nt_errstr(nt_status)));
579 mux_printf(mux_id, "BH %s\n", nt_errstr(nt_status));
581 talloc_free(mem_ctx);
585 /* get the string onto the context */
586 grouplist = talloc_strdup(mem_ctx, "");
588 for (i=0; i<session_info->security_token->num_sids; i++) {
589 struct security_token *token = session_info->security_token;
590 const char *sidstr = dom_sid_string(session_info,
592 grouplist = talloc_asprintf_append_buffer(grouplist, "%s,", sidstr);
595 mux_printf(mux_id, "GL %s\n", grouplist);
596 talloc_free(session_info);
598 talloc_free(mem_ctx);
602 if (strncmp(buf, "GK", 2) == 0) {
604 DEBUG(10, ("Requested session key\n"));
605 nt_status = gensec_session_key(state->gensec_state, &session_key);
606 if(!NT_STATUS_IS_OK(nt_status)) {
607 DEBUG(1, ("gensec_session_key failed: %s\n", nt_errstr(nt_status)));
608 mux_printf(mux_id, "BH No session key\n");
609 talloc_free(mem_ctx);
612 base64_key = base64_encode_data_blob(state, session_key);
613 mux_printf(mux_id, "GK %s\n", base64_key);
614 talloc_free(base64_key);
616 talloc_free(mem_ctx);
620 if (strncmp(buf, "GF", 2) == 0) {
621 struct gensec_ntlmssp_state *gensec_ntlmssp_state;
624 gensec_ntlmssp_state = talloc_get_type(state->gensec_state->private_data,
625 struct gensec_ntlmssp_state);
626 neg_flags = gensec_ntlmssp_state->neg_flags;
628 DEBUG(10, ("Requested negotiated feature flags\n"));
629 mux_printf(mux_id, "GF 0x%08x\n", neg_flags);
633 nt_status = gensec_update(state->gensec_state, mem_ctx, in, &out);
635 /* don't leak 'bad password'/'no such user' info to the network client */
636 nt_status = auth_nt_status_squash(nt_status);
639 out_base64 = base64_encode_data_blob(mem_ctx, out);
644 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
648 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
650 } else if (state->gensec_state->gensec_role == GENSEC_SERVER) {
657 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
659 reply_arg = nt_errstr(nt_status);
660 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
661 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
663 reply_arg = nt_errstr(nt_status);
664 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
665 } else if (!NT_STATUS_IS_OK(nt_status)) {
667 reply_arg = nt_errstr(nt_status);
668 DEBUG(1, ("GENSEC login failed: %s\n", nt_errstr(nt_status)));
669 } else if /* OK */ (state->gensec_state->gensec_role == GENSEC_SERVER) {
670 struct auth_session_info *session_info;
672 nt_status = gensec_session_info(state->gensec_state, &session_info);
673 if (!NT_STATUS_IS_OK(nt_status)) {
675 reply_arg = nt_errstr(nt_status);
676 DEBUG(1, ("GENSEC failed to retreive the session info: %s\n", nt_errstr(nt_status)));
680 reply_arg = talloc_asprintf(state->gensec_state,
681 "%s%s%s", session_info->server_info->domain_name,
682 lp_winbind_separator(lp_ctx), session_info->server_info->account_name);
683 talloc_free(session_info);
685 } else if (state->gensec_state->gensec_role == GENSEC_CLIENT) {
687 reply_arg = out_base64;
692 switch (stdio_helper_mode) {
693 case GSS_SPNEGO_SERVER:
694 mux_printf(mux_id, "%s %s %s\n", reply_code,
695 out_base64 ? out_base64 : "*",
696 reply_arg ? reply_arg : "*");
700 mux_printf(mux_id, "%s %s\n", reply_code, out_base64);
701 } else if (reply_arg) {
702 mux_printf(mux_id, "%s %s\n", reply_code, reply_arg);
704 mux_printf(mux_id, "%s\n", reply_code);
708 talloc_free(mem_ctx);
712 static void manage_ntlm_server_1_request(enum stdio_helper_mode stdio_helper_mode,
713 struct loadparm_context *lp_ctx,
714 char *buf, int length, void **private,
715 unsigned int mux_id, void **private2)
717 char *request, *parameter;
718 static DATA_BLOB challenge;
719 static DATA_BLOB lm_response;
720 static DATA_BLOB nt_response;
721 static char *full_username;
722 static char *username;
724 static char *plaintext_password;
725 static bool ntlm_server_1_user_session_key;
726 static bool ntlm_server_1_lm_session_key;
728 if (strequal(buf, ".")) {
729 if (!full_username && !username) {
730 mux_printf(mux_id, "Error: No username supplied!\n");
731 } else if (plaintext_password) {
732 /* handle this request as plaintext */
733 if (!full_username) {
734 if (asprintf(&full_username, "%s%c%s", domain, *lp_winbind_separator(lp_ctx), username) == -1) {
735 mux_printf(mux_id, "Error: Out of memory in asprintf!\n.\n");
739 if (check_plaintext_auth(full_username, plaintext_password, false)) {
740 mux_printf(mux_id, "Authenticated: Yes\n");
742 mux_printf(mux_id, "Authenticated: No\n");
744 } else if (!lm_response.data && !nt_response.data) {
745 mux_printf(mux_id, "Error: No password supplied!\n");
746 } else if (!challenge.data) {
747 mux_printf(mux_id, "Error: No lanman-challenge supplied!\n");
749 char *error_string = NULL;
751 DATA_BLOB user_session_key;
754 if (full_username && !username) {
758 if (!parse_ntlm_auth_domain_user(full_username, fstr_user, fstr_domain,
759 *lp_winbind_separator(lp_ctx))) {
760 /* username might be 'tainted', don't print into our new-line deleimianted stream */
761 mux_printf(mux_id, "Error: Could not parse into domain and username\n");
765 username = smb_xstrdup(fstr_user);
766 domain = smb_xstrdup(fstr_domain);
770 domain = smb_xstrdup(lp_workgroup(lp_ctx));
773 if (ntlm_server_1_lm_session_key)
774 flags |= NTLM_AUTH_FLAG_LMKEY;
776 if (ntlm_server_1_user_session_key)
777 flags |= NTLM_AUTH_FLAG_USER_SESSION_KEY;
779 if (!NT_STATUS_IS_OK(
780 local_pw_check_specified(lp_ctx,
783 lp_netbios_name(lp_ctx),
793 mux_printf(mux_id, "Authenticated: No\n");
794 mux_printf(mux_id, "Authentication-Error: %s\n.\n", error_string);
795 SAFE_FREE(error_string);
797 static char zeros[16];
799 char *hex_user_session_key;
801 mux_printf(mux_id, "Authenticated: Yes\n");
803 if (ntlm_server_1_lm_session_key
805 && (memcmp(zeros, lm_key.data,
806 lm_key.length) != 0)) {
807 hex_encode(lm_key.data,
810 mux_printf(mux_id, "LANMAN-Session-Key: %s\n", hex_lm_key);
811 SAFE_FREE(hex_lm_key);
814 if (ntlm_server_1_user_session_key
815 && user_session_key.length
816 && (memcmp(zeros, user_session_key.data,
817 user_session_key.length) != 0)) {
818 hex_encode(user_session_key.data,
819 user_session_key.length,
820 &hex_user_session_key);
821 mux_printf(mux_id, "User-Session-Key: %s\n", hex_user_session_key);
822 SAFE_FREE(hex_user_session_key);
826 /* clear out the state */
827 challenge = data_blob(NULL, 0);
828 nt_response = data_blob(NULL, 0);
829 lm_response = data_blob(NULL, 0);
830 SAFE_FREE(full_username);
833 SAFE_FREE(plaintext_password);
834 ntlm_server_1_user_session_key = false;
835 ntlm_server_1_lm_session_key = false;
836 mux_printf(mux_id, ".\n");
843 /* Indicates a base64 encoded structure */
844 parameter = strstr(request, ":: ");
846 parameter = strstr(request, ": ");
849 DEBUG(0, ("Parameter not found!\n"));
850 mux_printf(mux_id, "Error: Parameter not found!\n.\n");
867 base64_decode_inplace(parameter);
870 if (strequal(request, "LANMAN-Challenge")) {
871 challenge = strhex_to_data_blob(parameter);
872 if (challenge.length != 8) {
873 mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 8)\n.\n",
875 (int)challenge.length);
876 challenge = data_blob(NULL, 0);
878 } else if (strequal(request, "NT-Response")) {
879 nt_response = strhex_to_data_blob(parameter);
880 if (nt_response.length < 24) {
881 mux_printf(mux_id, "Error: hex decode of %s failed! (only got %d bytes, needed at least 24)\n.\n",
883 (int)nt_response.length);
884 nt_response = data_blob(NULL, 0);
886 } else if (strequal(request, "LANMAN-Response")) {
887 lm_response = strhex_to_data_blob(parameter);
888 if (lm_response.length != 24) {
889 mux_printf(mux_id, "Error: hex decode of %s failed! (got %d bytes, expected 24)\n.\n",
891 (int)lm_response.length);
892 lm_response = data_blob(NULL, 0);
894 } else if (strequal(request, "Password")) {
895 plaintext_password = smb_xstrdup(parameter);
896 } else if (strequal(request, "NT-Domain")) {
897 domain = smb_xstrdup(parameter);
898 } else if (strequal(request, "Username")) {
899 username = smb_xstrdup(parameter);
900 } else if (strequal(request, "Full-Username")) {
901 full_username = smb_xstrdup(parameter);
902 } else if (strequal(request, "Request-User-Session-Key")) {
903 ntlm_server_1_user_session_key = strequal(parameter, "Yes");
904 } else if (strequal(request, "Request-LanMan-Session-Key")) {
905 ntlm_server_1_lm_session_key = strequal(parameter, "Yes");
907 mux_printf(mux_id, "Error: Unknown request %s\n.\n", request);
911 static void manage_squid_request(struct loadparm_context *lp_ctx, enum stdio_helper_mode helper_mode,
912 stdio_helper_function fn, void **private2)
915 char tmp[INITIAL_BUFFER_SIZE+1];
916 unsigned int mux_id = 0;
917 int length, buf_size = 0;
920 unsigned int max_mux;
921 void **private_pointers;
924 static struct mux_private *mux_private;
925 static void *normal_private;
928 buf = talloc_strdup(NULL, "");
931 DEBUG(0, ("Failed to allocate memory for reading the input "
933 x_fprintf(x_stdout, "ERR\n");
938 /* this is not a typo - x_fgets doesn't work too well under
940 if (fgets(tmp, INITIAL_BUFFER_SIZE, stdin) == NULL) {
942 DEBUG(1, ("fgets() failed! dying..... errno=%d "
943 "(%s)\n", ferror(stdin),
944 strerror(ferror(stdin))));
946 exit(1); /* BIIG buffer */
951 buf = talloc_strdup_append_buffer(buf, tmp);
952 buf_size += INITIAL_BUFFER_SIZE;
954 if (buf_size > MAX_BUFFER_SIZE) {
955 DEBUG(0, ("Invalid Request (too large)\n"));
956 x_fprintf(x_stdout, "ERR\n");
961 c = strchr(buf, '\n');
967 DEBUG(10, ("Got '%s' from squid (length: %d).\n",buf,length));
969 if (buf[0] == '\0') {
970 DEBUG(0, ("Invalid Request (empty)\n"));
971 x_fprintf(x_stdout, "ERR\n");
977 if (sscanf(buf, "%u ", &mux_id) != 1) {
978 DEBUG(0, ("Invalid Request - no multiplex id\n"));
979 x_fprintf(x_stdout, "ERR\n");
984 mux_private = talloc(NULL, struct mux_private);
985 mux_private->max_mux = 0;
986 mux_private->private_pointers = NULL;
991 DEBUG(0, ("Invalid Request - no data after multiplex id\n"));
992 x_fprintf(x_stdout, "ERR\n");
997 if (mux_id >= mux_private->max_mux) {
998 unsigned int prev_max = mux_private->max_mux;
999 mux_private->max_mux = mux_id + 1;
1000 mux_private->private_pointers
1001 = talloc_realloc(mux_private,
1002 mux_private->private_pointers,
1003 void *, mux_private->max_mux);
1004 memset(&mux_private->private_pointers[prev_max], '\0',
1005 (sizeof(*mux_private->private_pointers) * (mux_private->max_mux - prev_max)));
1008 private = &mux_private->private_pointers[mux_id];
1011 private = &normal_private;
1014 fn(helper_mode, lp_ctx, c, length, private, mux_id, private2);
1018 static void squid_stream(struct loadparm_context *lp_ctx,
1019 enum stdio_helper_mode stdio_mode,
1020 stdio_helper_function fn) {
1021 /* initialize FDescs */
1022 x_setbuf(x_stdout, NULL);
1023 x_setbuf(x_stderr, NULL);
1025 manage_squid_request(lp_ctx, stdio_mode, fn, NULL);
1033 OPT_USERNAME = 1000,
1042 OPT_USER_SESSION_KEY,
1044 OPT_REQUIRE_MEMBERSHIP,
1046 OPT_USE_CACHED_CREDS,
1049 int main(int argc, const char **argv)
1051 static const char *helper_protocol;
1056 /* NOTE: DO NOT change this interface without considering the implications!
1057 This is an external interface, which other programs will use to interact
1061 /* We do not use single-letter command abbreviations, because they harm future
1062 interface stability. */
1064 struct poptOption long_options[] = {
1066 { "helper-protocol", 0, POPT_ARG_STRING, &helper_protocol, OPT_DOMAIN, "operate as a stdio-based helper", "helper protocol to use"},
1067 { "domain", 0, POPT_ARG_STRING, &opt_domain, OPT_DOMAIN, "domain name"},
1068 { "workstation", 0, POPT_ARG_STRING, &opt_workstation, OPT_WORKSTATION, "workstation"},
1069 { "username", 0, POPT_ARG_STRING, &opt_username, OPT_PASSWORD, "Username"},
1070 { "password", 0, POPT_ARG_STRING, &opt_password, OPT_PASSWORD, "User's plaintext password"},
1071 { "multiplex", 0, POPT_ARG_NONE, &opt_multiplex, OPT_MULTIPLEX, "Multiplex Mode"},
1072 { "use-cached-creds", 0, POPT_ARG_NONE, &use_cached_creds, OPT_USE_CACHED_CREDS, "silently ignored for compatibility reasons"},
1078 /* Samba client initialisation */
1080 setup_logging(NULL, DEBUG_STDERR);
1084 pc = poptGetContext("ntlm_auth", argc, argv, long_options, 0);
1086 /* Parse command line options */
1089 poptPrintHelp(pc, stderr, 0);
1093 pc = poptGetContext(NULL, argc, (const char **)argv, long_options,
1094 POPT_CONTEXT_KEEP_FIRST);
1096 while((opt = poptGetNextOpt(pc)) != -1) {
1102 fprintf(stderr, "%s: %s\n",
1103 poptBadOption(pc, POPT_BADOPTION_NOALIAS),
1108 gensec_init(cmdline_lp_ctx);
1110 if (opt_domain == NULL) {
1111 opt_domain = lp_workgroup(cmdline_lp_ctx);
1114 if (helper_protocol) {
1116 for (i=0; i<NUM_HELPER_MODES; i++) {
1117 if (strcmp(helper_protocol, stdio_helper_protocols[i].name) == 0) {
1118 squid_stream(cmdline_lp_ctx, stdio_helper_protocols[i].mode, stdio_helper_protocols[i].fn);
1122 x_fprintf(x_stderr, "unknown helper protocol [%s]\n\nValid helper protools:\n\n", helper_protocol);
1124 for (i=0; i<NUM_HELPER_MODES; i++) {
1125 x_fprintf(x_stderr, "%s\n", stdio_helper_protocols[i].name);
1131 if (!opt_username) {
1132 x_fprintf(x_stderr, "username must be specified!\n\n");
1133 poptPrintHelp(pc, stderr, 0);
1137 if (opt_workstation == NULL) {
1138 opt_workstation = lp_netbios_name(cmdline_lp_ctx);
1141 if (!opt_password) {
1142 opt_password = getpass("password: ");
1148 asprintf(&user, "%s%c%s", opt_domain, *lp_winbind_separator(cmdline_lp_ctx), opt_username);
1149 if (!check_plaintext_auth(user, opt_password, true)) {
1156 poptFreeContext(pc);