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update patch date to today; prepare for release
[gssapi-openssh.git] / openssh / monitor_wrap.c
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826f3a39 1/*
2 * Copyright 2002 Niels Provos <provos@citi.umich.edu>
3 * Copyright 2002 Markus Friedl <markus@openbsd.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "includes.h"
2ce0bfe4 28RCSID("$OpenBSD: monitor_wrap.c,v 1.40 2005/05/24 17:32:43 avsm Exp $");
826f3a39 29
30#include <openssl/bn.h>
31#include <openssl/dh.h>
32
33#include "ssh.h"
34#include "dh.h"
35#include "kex.h"
36#include "auth.h"
bfe49944 37#include "auth-options.h"
826f3a39 38#include "buffer.h"
39#include "bufaux.h"
40#include "packet.h"
41#include "mac.h"
42#include "log.h"
12a403af 43#ifdef TARGET_OS_MAC /* XXX Broken krb5 headers on Mac */
44#undef TARGET_OS_MAC
826f3a39 45#include "zlib.h"
12a403af 46#define TARGET_OS_MAC 1
47#else
48#include "zlib.h"
49#endif
826f3a39 50#include "monitor.h"
51#include "monitor_wrap.h"
52#include "xmalloc.h"
53#include "atomicio.h"
54#include "monitor_fdpass.h"
55#include "getput.h"
7cac2b65 56#include "servconf.h"
826f3a39 57
58#include "auth.h"
59#include "channels.h"
60#include "session.h"
61
b59afbfe 62#ifdef GSSAPI
63#include "ssh-gss.h"
64#endif
65
826f3a39 66/* Imports */
67extern int compat20;
68extern Newkeys *newkeys[];
69extern z_stream incoming_stream;
70extern z_stream outgoing_stream;
71extern struct monitor *pmonitor;
72extern Buffer input, output;
7e82606e 73extern Buffer loginmsg;
7cac2b65 74extern ServerOptions options;
dfddba3d 75extern Buffer loginmsg;
826f3a39 76
540d72c3 77int
78mm_is_monitor(void)
79{
80 /*
81 * m_pid is only set in the privileged part, and
82 * points to the unprivileged child.
83 */
84 return (pmonitor && pmonitor->m_pid > 0);
85}
86
826f3a39 87void
7e82606e 88mm_request_send(int sock, enum monitor_reqtype type, Buffer *m)
826f3a39 89{
826f3a39 90 u_int mlen = buffer_len(m);
d03f4262 91 u_char buf[5];
826f3a39 92
44a053a3 93 debug3("%s entering: type %d", __func__, type);
826f3a39 94
95 PUT_32BIT(buf, mlen + 1);
44a053a3 96 buf[4] = (u_char) type; /* 1st byte of payload is mesg-type */
7e82606e 97 if (atomicio(vwrite, sock, buf, sizeof(buf)) != sizeof(buf))
2ce0bfe4 98 fatal("%s: write: %s", __func__, strerror(errno));
7e82606e 99 if (atomicio(vwrite, sock, buffer_ptr(m), mlen) != mlen)
2ce0bfe4 100 fatal("%s: write: %s", __func__, strerror(errno));
826f3a39 101}
102
103void
7e82606e 104mm_request_receive(int sock, Buffer *m)
826f3a39 105{
106 u_char buf[4];
826f3a39 107 u_int msg_len;
108
44a053a3 109 debug3("%s entering", __func__);
826f3a39 110
2ce0bfe4 111 if (atomicio(read, sock, buf, sizeof(buf)) != sizeof(buf)) {
112 if (errno == EPIPE)
540d72c3 113 cleanup_exit(255);
2ce0bfe4 114 fatal("%s: read: %s", __func__, strerror(errno));
826f3a39 115 }
116 msg_len = GET_32BIT(buf);
117 if (msg_len > 256 * 1024)
44a053a3 118 fatal("%s: read: bad msg_len %d", __func__, msg_len);
826f3a39 119 buffer_clear(m);
120 buffer_append_space(m, msg_len);
2ce0bfe4 121 if (atomicio(read, sock, buffer_ptr(m), msg_len) != msg_len)
122 fatal("%s: read: %s", __func__, strerror(errno));
826f3a39 123}
124
125void
7e82606e 126mm_request_receive_expect(int sock, enum monitor_reqtype type, Buffer *m)
826f3a39 127{
128 u_char rtype;
129
44a053a3 130 debug3("%s entering: type %d", __func__, type);
826f3a39 131
7e82606e 132 mm_request_receive(sock, m);
826f3a39 133 rtype = buffer_get_char(m);
134 if (rtype != type)
44a053a3 135 fatal("%s: read: rtype %d != type %d", __func__,
826f3a39 136 rtype, type);
137}
138
139DH *
140mm_choose_dh(int min, int nbits, int max)
141{
142 BIGNUM *p, *g;
143 int success = 0;
144 Buffer m;
145
146 buffer_init(&m);
147 buffer_put_int(&m, min);
148 buffer_put_int(&m, nbits);
149 buffer_put_int(&m, max);
150
151 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_MODULI, &m);
152
44a053a3 153 debug3("%s: waiting for MONITOR_ANS_MODULI", __func__);
826f3a39 154 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_MODULI, &m);
155
156 success = buffer_get_char(&m);
157 if (success == 0)
44a053a3 158 fatal("%s: MONITOR_ANS_MODULI failed", __func__);
826f3a39 159
160 if ((p = BN_new()) == NULL)
44a053a3 161 fatal("%s: BN_new failed", __func__);
826f3a39 162 if ((g = BN_new()) == NULL)
44a053a3 163 fatal("%s: BN_new failed", __func__);
826f3a39 164 buffer_get_bignum2(&m, p);
165 buffer_get_bignum2(&m, g);
166
44a053a3 167 debug3("%s: remaining %d", __func__, buffer_len(&m));
826f3a39 168 buffer_free(&m);
169
170 return (dh_new_group(g, p));
171}
172
173int
174mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen)
175{
176 Kex *kex = *pmonitor->m_pkex;
177 Buffer m;
178
44a053a3 179 debug3("%s entering", __func__);
826f3a39 180
181 buffer_init(&m);
182 buffer_put_int(&m, kex->host_key_index(key));
183 buffer_put_string(&m, data, datalen);
184
185 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SIGN, &m);
186
44a053a3 187 debug3("%s: waiting for MONITOR_ANS_SIGN", __func__);
826f3a39 188 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SIGN, &m);
189 *sigp = buffer_get_string(&m, lenp);
190 buffer_free(&m);
191
192 return (0);
193}
194
195struct passwd *
7e82606e 196mm_getpwnamallow(const char *username)
826f3a39 197{
198 Buffer m;
199 struct passwd *pw;
200 u_int pwlen;
201
44a053a3 202 debug3("%s entering", __func__);
826f3a39 203
204 buffer_init(&m);
7e82606e 205 buffer_put_cstring(&m, username);
826f3a39 206
207 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m);
208
44a053a3 209 debug3("%s: waiting for MONITOR_ANS_PWNAM", __func__);
826f3a39 210 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m);
211
212 if (buffer_get_char(&m) == 0) {
213 buffer_free(&m);
214 return (NULL);
215 }
216 pw = buffer_get_string(&m, &pwlen);
217 if (pwlen != sizeof(struct passwd))
44a053a3 218 fatal("%s: struct passwd size mismatch", __func__);
826f3a39 219 pw->pw_name = buffer_get_string(&m, NULL);
220 pw->pw_passwd = buffer_get_string(&m, NULL);
221 pw->pw_gecos = buffer_get_string(&m, NULL);
222#ifdef HAVE_PW_CLASS_IN_PASSWD
223 pw->pw_class = buffer_get_string(&m, NULL);
224#endif
225 pw->pw_dir = buffer_get_string(&m, NULL);
226 pw->pw_shell = buffer_get_string(&m, NULL);
227 buffer_free(&m);
228
229 return (pw);
230}
231
540d72c3 232char *
233mm_auth2_read_banner(void)
826f3a39 234{
235 Buffer m;
236 char *banner;
237
44a053a3 238 debug3("%s entering", __func__);
826f3a39 239
240 buffer_init(&m);
241 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m);
242 buffer_clear(&m);
243
540d72c3 244 mm_request_receive_expect(pmonitor->m_recvfd,
245 MONITOR_ANS_AUTH2_READ_BANNER, &m);
826f3a39 246 banner = buffer_get_string(&m, NULL);
247 buffer_free(&m);
44a053a3 248
540d72c3 249 /* treat empty banner as missing banner */
250 if (strlen(banner) == 0) {
251 xfree(banner);
252 banner = NULL;
253 }
826f3a39 254 return (banner);
255}
256
257/* Inform the privileged process about service and style */
258
259void
260mm_inform_authserv(char *service, char *style)
261{
262 Buffer m;
263
44a053a3 264 debug3("%s entering", __func__);
826f3a39 265
266 buffer_init(&m);
267 buffer_put_cstring(&m, service);
268 buffer_put_cstring(&m, style ? style : "");
269
270 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHSERV, &m);
271
272 buffer_free(&m);
273}
274
275/* Do the password authentication */
276int
277mm_auth_password(Authctxt *authctxt, char *password)
278{
279 Buffer m;
280 int authenticated = 0;
281
44a053a3 282 debug3("%s entering", __func__);
826f3a39 283
284 buffer_init(&m);
285 buffer_put_cstring(&m, password);
286 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHPASSWORD, &m);
287
44a053a3 288 debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __func__);
826f3a39 289 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTHPASSWORD, &m);
290
291 authenticated = buffer_get_int(&m);
292
293 buffer_free(&m);
294
295 debug3("%s: user %sauthenticated",
44a053a3 296 __func__, authenticated ? "" : "not ");
826f3a39 297 return (authenticated);
298}
299
300int
301mm_user_key_allowed(struct passwd *pw, Key *key)
302{
303 return (mm_key_allowed(MM_USERKEY, NULL, NULL, key));
304}
305
306int
307mm_hostbased_key_allowed(struct passwd *pw, char *user, char *host,
308 Key *key)
309{
310 return (mm_key_allowed(MM_HOSTKEY, user, host, key));
311}
312
313int
314mm_auth_rhosts_rsa_key_allowed(struct passwd *pw, char *user,
315 char *host, Key *key)
316{
317 int ret;
318
319 key->type = KEY_RSA; /* XXX hack for key_to_blob */
320 ret = mm_key_allowed(MM_RSAHOSTKEY, user, host, key);
321 key->type = KEY_RSA1;
322 return (ret);
323}
324
325static void
326mm_send_debug(Buffer *m)
327{
328 char *msg;
329
330 while (buffer_len(m)) {
331 msg = buffer_get_string(m, NULL);
44a053a3 332 debug3("%s: Sending debug: %s", __func__, msg);
826f3a39 333 packet_send_debug("%s", msg);
334 xfree(msg);
335 }
336}
337
338int
339mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key)
340{
341 Buffer m;
342 u_char *blob;
343 u_int len;
bfe49944 344 int allowed = 0, have_forced = 0;
826f3a39 345
44a053a3 346 debug3("%s entering", __func__);
826f3a39 347
348 /* Convert the key to a blob and the pass it over */
349 if (!key_to_blob(key, &blob, &len))
350 return (0);
351
352 buffer_init(&m);
353 buffer_put_int(&m, type);
354 buffer_put_cstring(&m, user ? user : "");
355 buffer_put_cstring(&m, host ? host : "");
356 buffer_put_string(&m, blob, len);
357 xfree(blob);
358
359 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYALLOWED, &m);
360
44a053a3 361 debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __func__);
826f3a39 362 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYALLOWED, &m);
363
364 allowed = buffer_get_int(&m);
365
bfe49944 366 /* fake forced command */
367 auth_clear_options();
368 have_forced = buffer_get_int(&m);
369 forced_command = have_forced ? xstrdup("true") : NULL;
370
826f3a39 371 /* Send potential debug messages */
372 mm_send_debug(&m);
373
374 buffer_free(&m);
375
376 return (allowed);
377}
378
379/*
380 * This key verify needs to send the key type along, because the
381 * privileged parent makes the decision if the key is allowed
382 * for authentication.
383 */
384
385int
386mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
387{
388 Buffer m;
389 u_char *blob;
390 u_int len;
391 int verified = 0;
392
44a053a3 393 debug3("%s entering", __func__);
826f3a39 394
395 /* Convert the key to a blob and the pass it over */
396 if (!key_to_blob(key, &blob, &len))
397 return (0);
398
399 buffer_init(&m);
400 buffer_put_string(&m, blob, len);
401 buffer_put_string(&m, sig, siglen);
402 buffer_put_string(&m, data, datalen);
403 xfree(blob);
404
405 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYVERIFY, &m);
406
44a053a3 407 debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __func__);
826f3a39 408 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYVERIFY, &m);
409
410 verified = buffer_get_int(&m);
411
412 buffer_free(&m);
413
414 return (verified);
415}
416
417/* Export key state after authentication */
418Newkeys *
419mm_newkeys_from_blob(u_char *blob, int blen)
420{
421 Buffer b;
422 u_int len;
423 Newkeys *newkey = NULL;
424 Enc *enc;
425 Mac *mac;
426 Comp *comp;
427
44a053a3 428 debug3("%s: %p(%d)", __func__, blob, blen);
826f3a39 429#ifdef DEBUG_PK
430 dump_base64(stderr, blob, blen);
431#endif
432 buffer_init(&b);
433 buffer_append(&b, blob, blen);
434
435 newkey = xmalloc(sizeof(*newkey));
436 enc = &newkey->enc;
437 mac = &newkey->mac;
438 comp = &newkey->comp;
439
440 /* Enc structure */
441 enc->name = buffer_get_string(&b, NULL);
442 buffer_get(&b, &enc->cipher, sizeof(enc->cipher));
443 enc->enabled = buffer_get_int(&b);
444 enc->block_size = buffer_get_int(&b);
445 enc->key = buffer_get_string(&b, &enc->key_len);
446 enc->iv = buffer_get_string(&b, &len);
447 if (len != enc->block_size)
d03f4262 448 fatal("%s: bad ivlen: expected %u != %u", __func__,
826f3a39 449 enc->block_size, len);
450
451 if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher)
44a053a3 452 fatal("%s: bad cipher name %s or pointer %p", __func__,
826f3a39 453 enc->name, enc->cipher);
454
455 /* Mac structure */
456 mac->name = buffer_get_string(&b, NULL);
457 if (mac->name == NULL || mac_init(mac, mac->name) == -1)
44a053a3 458 fatal("%s: can not init mac %s", __func__, mac->name);
826f3a39 459 mac->enabled = buffer_get_int(&b);
460 mac->key = buffer_get_string(&b, &len);
461 if (len > mac->key_len)
d03f4262 462 fatal("%s: bad mac key length: %u > %d", __func__, len,
826f3a39 463 mac->key_len);
464 mac->key_len = len;
465
466 /* Comp structure */
467 comp->type = buffer_get_int(&b);
468 comp->enabled = buffer_get_int(&b);
469 comp->name = buffer_get_string(&b, NULL);
470
471 len = buffer_len(&b);
472 if (len != 0)
d03f4262 473 error("newkeys_from_blob: remaining bytes in blob %u", len);
826f3a39 474 buffer_free(&b);
475 return (newkey);
476}
477
478int
479mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
480{
481 Buffer b;
482 int len;
826f3a39 483 Enc *enc;
484 Mac *mac;
485 Comp *comp;
486 Newkeys *newkey = newkeys[mode];
487
44a053a3 488 debug3("%s: converting %p", __func__, newkey);
826f3a39 489
490 if (newkey == NULL) {
44a053a3 491 error("%s: newkey == NULL", __func__);
826f3a39 492 return 0;
493 }
494 enc = &newkey->enc;
495 mac = &newkey->mac;
496 comp = &newkey->comp;
497
498 buffer_init(&b);
499 /* Enc structure */
500 buffer_put_cstring(&b, enc->name);
501 /* The cipher struct is constant and shared, you export pointer */
502 buffer_append(&b, &enc->cipher, sizeof(enc->cipher));
503 buffer_put_int(&b, enc->enabled);
504 buffer_put_int(&b, enc->block_size);
505 buffer_put_string(&b, enc->key, enc->key_len);
506 packet_get_keyiv(mode, enc->iv, enc->block_size);
507 buffer_put_string(&b, enc->iv, enc->block_size);
508
509 /* Mac structure */
510 buffer_put_cstring(&b, mac->name);
511 buffer_put_int(&b, mac->enabled);
512 buffer_put_string(&b, mac->key, mac->key_len);
513
514 /* Comp structure */
515 buffer_put_int(&b, comp->type);
516 buffer_put_int(&b, comp->enabled);
517 buffer_put_cstring(&b, comp->name);
518
519 len = buffer_len(&b);
826f3a39 520 if (lenp != NULL)
521 *lenp = len;
d03f4262 522 if (blobp != NULL) {
523 *blobp = xmalloc(len);
524 memcpy(*blobp, buffer_ptr(&b), len);
525 }
526 memset(buffer_ptr(&b), 0, len);
527 buffer_free(&b);
826f3a39 528 return len;
529}
530
531static void
532mm_send_kex(Buffer *m, Kex *kex)
533{
534 buffer_put_string(m, kex->session_id, kex->session_id_len);
535 buffer_put_int(m, kex->we_need);
536 buffer_put_int(m, kex->hostkey_type);
537 buffer_put_int(m, kex->kex_type);
538 buffer_put_string(m, buffer_ptr(&kex->my), buffer_len(&kex->my));
539 buffer_put_string(m, buffer_ptr(&kex->peer), buffer_len(&kex->peer));
540 buffer_put_int(m, kex->flags);
541 buffer_put_cstring(m, kex->client_version_string);
542 buffer_put_cstring(m, kex->server_version_string);
543}
544
545void
7e82606e 546mm_send_keystate(struct monitor *monitor)
826f3a39 547{
548 Buffer m;
549 u_char *blob, *p;
550 u_int bloblen, plen;
7cac2b65 551 u_int32_t seqnr, packets;
552 u_int64_t blocks;
826f3a39 553
554 buffer_init(&m);
555
556 if (!compat20) {
557 u_char iv[24];
44a053a3 558 u_char *key;
559 u_int ivlen, keylen;
826f3a39 560
561 buffer_put_int(&m, packet_get_protocol_flags());
562
563 buffer_put_int(&m, packet_get_ssh1_cipher());
564
44a053a3 565 debug3("%s: Sending ssh1 KEY+IV", __func__);
566 keylen = packet_get_encryption_key(NULL);
567 key = xmalloc(keylen+1); /* add 1 if keylen == 0 */
568 keylen = packet_get_encryption_key(key);
569 buffer_put_string(&m, key, keylen);
570 memset(key, 0, keylen);
571 xfree(key);
572
826f3a39 573 ivlen = packet_get_keyiv_len(MODE_OUT);
574 packet_get_keyiv(MODE_OUT, iv, ivlen);
575 buffer_put_string(&m, iv, ivlen);
576 ivlen = packet_get_keyiv_len(MODE_OUT);
577 packet_get_keyiv(MODE_IN, iv, ivlen);
578 buffer_put_string(&m, iv, ivlen);
579 goto skip;
580 } else {
581 /* Kex for rekeying */
7e82606e 582 mm_send_kex(&m, *monitor->m_pkex);
826f3a39 583 }
584
585 debug3("%s: Sending new keys: %p %p",
44a053a3 586 __func__, newkeys[MODE_OUT], newkeys[MODE_IN]);
826f3a39 587
588 /* Keys from Kex */
589 if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen))
44a053a3 590 fatal("%s: conversion of newkeys failed", __func__);
826f3a39 591
592 buffer_put_string(&m, blob, bloblen);
593 xfree(blob);
594
595 if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen))
44a053a3 596 fatal("%s: conversion of newkeys failed", __func__);
826f3a39 597
598 buffer_put_string(&m, blob, bloblen);
599 xfree(blob);
600
7cac2b65 601 packet_get_state(MODE_OUT, &seqnr, &blocks, &packets);
602 buffer_put_int(&m, seqnr);
603 buffer_put_int64(&m, blocks);
604 buffer_put_int(&m, packets);
605 packet_get_state(MODE_IN, &seqnr, &blocks, &packets);
606 buffer_put_int(&m, seqnr);
607 buffer_put_int64(&m, blocks);
608 buffer_put_int(&m, packets);
826f3a39 609
44a053a3 610 debug3("%s: New keys have been sent", __func__);
826f3a39 611 skip:
612 /* More key context */
613 plen = packet_get_keycontext(MODE_OUT, NULL);
614 p = xmalloc(plen+1);
615 packet_get_keycontext(MODE_OUT, p);
616 buffer_put_string(&m, p, plen);
617 xfree(p);
618
619 plen = packet_get_keycontext(MODE_IN, NULL);
620 p = xmalloc(plen+1);
621 packet_get_keycontext(MODE_IN, p);
622 buffer_put_string(&m, p, plen);
623 xfree(p);
624
625 /* Compression state */
44a053a3 626 debug3("%s: Sending compression state", __func__);
826f3a39 627 buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream));
628 buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream));
629
630 /* Network I/O buffers */
631 buffer_put_string(&m, buffer_ptr(&input), buffer_len(&input));
632 buffer_put_string(&m, buffer_ptr(&output), buffer_len(&output));
633
7e82606e 634 mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
44a053a3 635 debug3("%s: Finished sending state", __func__);
826f3a39 636
637 buffer_free(&m);
638}
639
640int
641mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
642{
643 Buffer m;
7e82606e 644 char *p, *msg;
826f3a39 645 int success = 0;
646
647 buffer_init(&m);
648 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m);
649
44a053a3 650 debug3("%s: waiting for MONITOR_ANS_PTY", __func__);
826f3a39 651 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PTY, &m);
652
653 success = buffer_get_int(&m);
654 if (success == 0) {
44a053a3 655 debug3("%s: pty alloc failed", __func__);
826f3a39 656 buffer_free(&m);
657 return (0);
658 }
659 p = buffer_get_string(&m, NULL);
7e82606e 660 msg = buffer_get_string(&m, NULL);
826f3a39 661 buffer_free(&m);
662
663 strlcpy(namebuf, p, namebuflen); /* Possible truncation */
664 xfree(p);
665
7e82606e 666 buffer_append(&loginmsg, msg, strlen(msg));
667 xfree(msg);
668
826f3a39 669 *ptyfd = mm_receive_fd(pmonitor->m_recvfd);
670 *ttyfd = mm_receive_fd(pmonitor->m_recvfd);
671
672 /* Success */
673 return (1);
674}
675
676void
540d72c3 677mm_session_pty_cleanup2(Session *s)
826f3a39 678{
826f3a39 679 Buffer m;
680
681 if (s->ttyfd == -1)
682 return;
683 buffer_init(&m);
684 buffer_put_cstring(&m, s->tty);
685 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTYCLEANUP, &m);
686 buffer_free(&m);
687
688 /* closed dup'ed master */
689 if (close(s->ptymaster) < 0)
690 error("close(s->ptymaster): %s", strerror(errno));
691
692 /* unlink pty from session */
693 s->ttyfd = -1;
694}
695
696#ifdef USE_PAM
697void
12a403af 698mm_start_pam(Authctxt *authctxt)
826f3a39 699{
700 Buffer m;
701
44a053a3 702 debug3("%s entering", __func__);
7cac2b65 703 if (!options.use_pam)
704 fatal("UsePAM=no, but ended up in %s anyway", __func__);
826f3a39 705
706 buffer_init(&m);
826f3a39 707 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m);
708
709 buffer_free(&m);
710}
7cac2b65 711
712u_int
713mm_do_pam_account(void)
714{
715 Buffer m;
716 u_int ret;
dfddba3d 717 char *msg;
7cac2b65 718
719 debug3("%s entering", __func__);
720 if (!options.use_pam)
721 fatal("UsePAM=no, but ended up in %s anyway", __func__);
722
723 buffer_init(&m);
724 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_ACCOUNT, &m);
725
540d72c3 726 mm_request_receive_expect(pmonitor->m_recvfd,
7cac2b65 727 MONITOR_ANS_PAM_ACCOUNT, &m);
728 ret = buffer_get_int(&m);
dfddba3d 729 msg = buffer_get_string(&m, NULL);
730 buffer_append(&loginmsg, msg, strlen(msg));
731 xfree(msg);
7cac2b65 732
733 buffer_free(&m);
540d72c3 734
7cac2b65 735 debug3("%s returning %d", __func__, ret);
736
737 return (ret);
738}
739
740void *
741mm_sshpam_init_ctx(Authctxt *authctxt)
742{
743 Buffer m;
744 int success;
745
746 debug3("%s", __func__);
747 buffer_init(&m);
748 buffer_put_cstring(&m, authctxt->user);
749 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m);
750 debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__);
751 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m);
752 success = buffer_get_int(&m);
753 if (success == 0) {
754 debug3("%s: pam_init_ctx failed", __func__);
755 buffer_free(&m);
756 return (NULL);
757 }
758 buffer_free(&m);
759 return (authctxt);
760}
761
762int
763mm_sshpam_query(void *ctx, char **name, char **info,
764 u_int *num, char ***prompts, u_int **echo_on)
765{
766 Buffer m;
2ce0bfe4 767 u_int i;
768 int ret;
7cac2b65 769
770 debug3("%s", __func__);
771 buffer_init(&m);
772 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_QUERY, &m);
773 debug3("%s: waiting for MONITOR_ANS_PAM_QUERY", __func__);
774 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_QUERY, &m);
775 ret = buffer_get_int(&m);
776 debug3("%s: pam_query returned %d", __func__, ret);
777 *name = buffer_get_string(&m, NULL);
778 *info = buffer_get_string(&m, NULL);
779 *num = buffer_get_int(&m);
780 *prompts = xmalloc((*num + 1) * sizeof(char *));
781 *echo_on = xmalloc((*num + 1) * sizeof(u_int));
782 for (i = 0; i < *num; ++i) {
783 (*prompts)[i] = buffer_get_string(&m, NULL);
784 (*echo_on)[i] = buffer_get_int(&m);
785 }
786 buffer_free(&m);
787 return (ret);
788}
789
790int
791mm_sshpam_respond(void *ctx, u_int num, char **resp)
792{
793 Buffer m;
2ce0bfe4 794 u_int i;
795 int ret;
7cac2b65 796
797 debug3("%s", __func__);
798 buffer_init(&m);
799 buffer_put_int(&m, num);
800 for (i = 0; i < num; ++i)
801 buffer_put_cstring(&m, resp[i]);
802 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_RESPOND, &m);
803 debug3("%s: waiting for MONITOR_ANS_PAM_RESPOND", __func__);
804 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_RESPOND, &m);
805 ret = buffer_get_int(&m);
806 debug3("%s: pam_respond returned %d", __func__, ret);
807 buffer_free(&m);
808 return (ret);
809}
810
811void
812mm_sshpam_free_ctx(void *ctxtp)
813{
814 Buffer m;
815
816 debug3("%s", __func__);
817 buffer_init(&m);
818 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_FREE_CTX, &m);
819 debug3("%s: waiting for MONITOR_ANS_PAM_FREE_CTX", __func__);
820 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_FREE_CTX, &m);
821 buffer_free(&m);
822}
826f3a39 823#endif /* USE_PAM */
824
825/* Request process termination */
826
827void
828mm_terminate(void)
829{
830 Buffer m;
831
832 buffer_init(&m);
833 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_TERM, &m);
834 buffer_free(&m);
835}
836
837int
838mm_ssh1_session_key(BIGNUM *num)
839{
840 int rsafail;
841 Buffer m;
842
843 buffer_init(&m);
844 buffer_put_bignum2(&m, num);
845 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSKEY, &m);
846
847 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SESSKEY, &m);
848
849 rsafail = buffer_get_int(&m);
850 buffer_get_bignum2(&m, num);
851
852 buffer_free(&m);
853
854 return (rsafail);
855}
856
857static void
858mm_chall_setup(char **name, char **infotxt, u_int *numprompts,
859 char ***prompts, u_int **echo_on)
860{
44a053a3 861 *name = xstrdup("");
862 *infotxt = xstrdup("");
826f3a39 863 *numprompts = 1;
d03f4262 864 *prompts = xmalloc(*numprompts * sizeof(char *));
826f3a39 865 *echo_on = xmalloc(*numprompts * sizeof(u_int));
866 (*echo_on)[0] = 0;
867}
868
869int
870mm_bsdauth_query(void *ctx, char **name, char **infotxt,
871 u_int *numprompts, char ***prompts, u_int **echo_on)
872{
873 Buffer m;
bfe49944 874 u_int success;
826f3a39 875 char *challenge;
876
44a053a3 877 debug3("%s: entering", __func__);
826f3a39 878
879 buffer_init(&m);
880 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHQUERY, &m);
881
882 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_BSDAUTHQUERY,
883 &m);
bfe49944 884 success = buffer_get_int(&m);
885 if (success == 0) {
44a053a3 886 debug3("%s: no challenge", __func__);
826f3a39 887 buffer_free(&m);
888 return (-1);
889 }
890
891 /* Get the challenge, and format the response */
892 challenge = buffer_get_string(&m, NULL);
893 buffer_free(&m);
894
895 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
896 (*prompts)[0] = challenge;
897
44a053a3 898 debug3("%s: received challenge: %s", __func__, challenge);
826f3a39 899
900 return (0);
901}
902
903int
904mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses)
905{
906 Buffer m;
907 int authok;
908
44a053a3 909 debug3("%s: entering", __func__);
826f3a39 910 if (numresponses != 1)
911 return (-1);
912
913 buffer_init(&m);
914 buffer_put_cstring(&m, responses[0]);
915 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHRESPOND, &m);
916
917 mm_request_receive_expect(pmonitor->m_recvfd,
918 MONITOR_ANS_BSDAUTHRESPOND, &m);
919
920 authok = buffer_get_int(&m);
921 buffer_free(&m);
922
923 return ((authok == 0) ? -1 : 0);
924}
925
7e82606e 926#ifdef SKEY
826f3a39 927int
928mm_skey_query(void *ctx, char **name, char **infotxt,
929 u_int *numprompts, char ***prompts, u_int **echo_on)
930{
931 Buffer m;
bfe49944 932 int len;
933 u_int success;
826f3a39 934 char *p, *challenge;
935
44a053a3 936 debug3("%s: entering", __func__);
826f3a39 937
938 buffer_init(&m);
939 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYQUERY, &m);
940
941 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SKEYQUERY,
942 &m);
bfe49944 943 success = buffer_get_int(&m);
944 if (success == 0) {
44a053a3 945 debug3("%s: no challenge", __func__);
826f3a39 946 buffer_free(&m);
947 return (-1);
948 }
949
950 /* Get the challenge, and format the response */
951 challenge = buffer_get_string(&m, NULL);
952 buffer_free(&m);
953
44a053a3 954 debug3("%s: received challenge: %s", __func__, challenge);
826f3a39 955
956 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
957
958 len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
959 p = xmalloc(len);
960 strlcpy(p, challenge, len);
961 strlcat(p, SKEY_PROMPT, len);
962 (*prompts)[0] = p;
963 xfree(challenge);
964
965 return (0);
966}
967
968int
969mm_skey_respond(void *ctx, u_int numresponses, char **responses)
970{
971 Buffer m;
972 int authok;
973
44a053a3 974 debug3("%s: entering", __func__);
826f3a39 975 if (numresponses != 1)
976 return (-1);
977
978 buffer_init(&m);
979 buffer_put_cstring(&m, responses[0]);
980 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYRESPOND, &m);
981
982 mm_request_receive_expect(pmonitor->m_recvfd,
983 MONITOR_ANS_SKEYRESPOND, &m);
984
985 authok = buffer_get_int(&m);
986 buffer_free(&m);
987
988 return ((authok == 0) ? -1 : 0);
989}
7e82606e 990#endif /* SKEY */
826f3a39 991
992void
993mm_ssh1_session_id(u_char session_id[16])
994{
995 Buffer m;
996 int i;
997
44a053a3 998 debug3("%s entering", __func__);
826f3a39 999
1000 buffer_init(&m);
1001 for (i = 0; i < 16; i++)
1002 buffer_put_char(&m, session_id[i]);
1003
1004 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSID, &m);
1005 buffer_free(&m);
1006}
1007
1008int
1009mm_auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
1010{
1011 Buffer m;
1012 Key *key;
1013 u_char *blob;
1014 u_int blen;
bfe49944 1015 int allowed = 0, have_forced = 0;
826f3a39 1016
44a053a3 1017 debug3("%s entering", __func__);
826f3a39 1018
1019 buffer_init(&m);
1020 buffer_put_bignum2(&m, client_n);
1021
1022 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSAKEYALLOWED, &m);
1023 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSAKEYALLOWED, &m);
1024
1025 allowed = buffer_get_int(&m);
1026
bfe49944 1027 /* fake forced command */
1028 auth_clear_options();
1029 have_forced = buffer_get_int(&m);
1030 forced_command = have_forced ? xstrdup("true") : NULL;
1031
826f3a39 1032 if (allowed && rkey != NULL) {
1033 blob = buffer_get_string(&m, &blen);
1034 if ((key = key_from_blob(blob, blen)) == NULL)
44a053a3 1035 fatal("%s: key_from_blob failed", __func__);
826f3a39 1036 *rkey = key;
1037 xfree(blob);
1038 }
1039 mm_send_debug(&m);
1040 buffer_free(&m);
1041
1042 return (allowed);
1043}
1044
1045BIGNUM *
1046mm_auth_rsa_generate_challenge(Key *key)
1047{
1048 Buffer m;
1049 BIGNUM *challenge;
1050 u_char *blob;
1051 u_int blen;
1052
44a053a3 1053 debug3("%s entering", __func__);
826f3a39 1054
1055 if ((challenge = BN_new()) == NULL)
44a053a3 1056 fatal("%s: BN_new failed", __func__);
826f3a39 1057
1058 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1059 if (key_to_blob(key, &blob, &blen) == 0)
44a053a3 1060 fatal("%s: key_to_blob failed", __func__);
826f3a39 1061 key->type = KEY_RSA1;
1062
1063 buffer_init(&m);
1064 buffer_put_string(&m, blob, blen);
1065 xfree(blob);
1066
1067 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSACHALLENGE, &m);
1068 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSACHALLENGE, &m);
1069
1070 buffer_get_bignum2(&m, challenge);
1071 buffer_free(&m);
1072
1073 return (challenge);
1074}
1075
1076int
1077mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
1078{
1079 Buffer m;
1080 u_char *blob;
1081 u_int blen;
1082 int success = 0;
1083
44a053a3 1084 debug3("%s entering", __func__);
826f3a39 1085
1086 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1087 if (key_to_blob(key, &blob, &blen) == 0)
44a053a3 1088 fatal("%s: key_to_blob failed", __func__);
826f3a39 1089 key->type = KEY_RSA1;
1090
1091 buffer_init(&m);
1092 buffer_put_string(&m, blob, blen);
1093 buffer_put_string(&m, response, 16);
1094 xfree(blob);
1095
1096 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSARESPONSE, &m);
1097 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSARESPONSE, &m);
1098
1099 success = buffer_get_int(&m);
1100 buffer_free(&m);
1101
1102 return (success);
1103}
23987cb8 1104
dfddba3d 1105#ifdef SSH_AUDIT_EVENTS
1106void
1107mm_audit_event(ssh_audit_event_t event)
1108{
1109 Buffer m;
1110
1111 debug3("%s entering", __func__);
1112
1113 buffer_init(&m);
1114 buffer_put_int(&m, event);
1115
1116 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_EVENT, &m);
1117 buffer_free(&m);
1118}
1119
1120void
1121mm_audit_run_command(const char *command)
1122{
1123 Buffer m;
1124
1125 debug3("%s entering command %s", __func__, command);
1126
1127 buffer_init(&m);
1128 buffer_put_cstring(&m, command);
1129
1130 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_COMMAND, &m);
1131 buffer_free(&m);
1132}
1133#endif /* SSH_AUDIT_EVENTS */
1134
7cac2b65 1135#ifdef GSSAPI
1136OM_uint32
7e82606e 1137mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID goid)
23987cb8 1138{
7cac2b65 1139 Buffer m;
1140 OM_uint32 major;
23987cb8 1141
7cac2b65 1142 /* Client doesn't get to see the context */
1143 *ctx = NULL;
23987cb8 1144
1145 buffer_init(&m);
7e82606e 1146 buffer_put_string(&m, goid->elements, goid->length);
23987cb8 1147
7cac2b65 1148 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
1149 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
1150
1151 major = buffer_get_int(&m);
23987cb8 1152
23987cb8 1153 buffer_free(&m);
7cac2b65 1154 return (major);
23987cb8 1155}
23987cb8 1156
7cac2b65 1157OM_uint32
1158mm_ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *in,
1159 gss_buffer_desc *out, OM_uint32 *flags)
23987cb8 1160{
23987cb8 1161 Buffer m;
7cac2b65 1162 OM_uint32 major;
1163 u_int len;
23987cb8 1164
1165 buffer_init(&m);
7cac2b65 1166 buffer_put_string(&m, in->value, in->length);
23987cb8 1167
7cac2b65 1168 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
1169 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
23987cb8 1170
7cac2b65 1171 major = buffer_get_int(&m);
1172 out->value = buffer_get_string(&m, &len);
1173 out->length = len;
1174 if (flags)
1175 *flags = buffer_get_int(&m);
23987cb8 1176
1177 buffer_free(&m);
b59afbfe 1178
7cac2b65 1179 return (major);
b59afbfe 1180}
1181
540d72c3 1182OM_uint32
1183mm_ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
1184{
1185 Buffer m;
1186 OM_uint32 major;
1187
1188 buffer_init(&m);
1189 buffer_put_string(&m, gssbuf->value, gssbuf->length);
1190 buffer_put_string(&m, gssmic->value, gssmic->length);
1191
1192 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSCHECKMIC, &m);
1193 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSCHECKMIC,
1194 &m);
1195
1196 major = buffer_get_int(&m);
1197 buffer_free(&m);
1198 return(major);
1199}
1200
7cac2b65 1201int
1202mm_ssh_gssapi_userok(char *user)
1203{
1204 Buffer m;
1205 int authenticated = 0;
b59afbfe 1206
7cac2b65 1207 buffer_init(&m);
b59afbfe 1208
7cac2b65 1209 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, &m);
1210 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
1211 &m);
b59afbfe 1212
7cac2b65 1213 authenticated = buffer_get_int(&m);
b59afbfe 1214
23987cb8 1215 buffer_free(&m);
7cac2b65 1216 debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
1217 return (authenticated);
b59afbfe 1218}
1219
b59afbfe 1220OM_uint32
1221mm_ssh_gssapi_sign(Gssctxt *ctx, gss_buffer_desc *data, gss_buffer_desc *hash) {
1222 Buffer m;
1223 OM_uint32 major;
77e22b94 1224 u_int len;
b59afbfe 1225
1226 buffer_init(&m);
1227 buffer_put_string(&m, data->value, data->length);
1228
1229 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSIGN, &m);
b59afbfe 1230 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSIGN, &m);
23987cb8 1231
b59afbfe 1232 major=buffer_get_int(&m);
77e22b94 1233 hash->value = buffer_get_string(&m, &len);
1234 hash->length = len;
b59afbfe 1235
23987cb8 1236 buffer_free(&m);
1237
b59afbfe 1238 return(major);
1239}
9eeaa28e 1240
23987cb8 1241char *
1242mm_ssh_gssapi_last_error(Gssctxt *ctx, OM_uint32 *major, OM_uint32 *minor) {
1243 Buffer m;
1244 OM_uint32 maj,min;
1245 char *errstr;
1246
1247 buffer_init(&m);
1248
1249 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSERR, &m);
1250 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSERR, &m);
1251
1252 maj = buffer_get_int(&m);
1253 min = buffer_get_int(&m);
1254
1255 if (major) *major=maj;
1256 if (minor) *minor=min;
1257
1258 errstr=buffer_get_string(&m,NULL);
1259
1260 buffer_free(&m);
1261
1262 return(errstr);
1263}
e23e524c 1264
9eeaa28e 1265OM_uint32
1266mm_gss_indicate_mechs(OM_uint32 *minor_status, gss_OID_set *mech_set)
1267{
1268 Buffer m;
e23e524c 1269 OM_uint32 major,minor;
1270 int count;
1271 gss_OID_desc oid;
d7590ddf 1272 u_int length;
1273
9eeaa28e 1274 buffer_init(&m);
1275
1276 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSMECHS, &m);
9eeaa28e 1277 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSMECHS,
1278 &m);
1279 major=buffer_get_int(&m);
17a7ea48 1280 count=buffer_get_int(&m);
e23e524c 1281
1282 gss_create_empty_oid_set(&minor,mech_set);
1283 while(count-->0) {
e23e524c 1284 oid.elements=buffer_get_string(&m,&length);
1285 oid.length=length;
1286 gss_add_oid_set_member(&minor,&oid,mech_set);
9eeaa28e 1287 }
1288
23987cb8 1289 buffer_free(&m);
9eeaa28e 1290
23987cb8 1291 return(major);
9eeaa28e 1292}
e23e524c 1293
1294int
1295mm_ssh_gssapi_localname(char **lname)
1296{
1297 Buffer m;
1298
1299 buffer_init(&m);
1300 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSLOCALNAME, &m);
1301
1302 debug3("%s: waiting for MONITOR_ANS_GSSLOCALNAME", __func__);
1303 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSLOCALNAME,
1304 &m);
1305
1306 *lname = buffer_get_string(&m, NULL);
1307
1308 buffer_free(&m);
1309 if (lname[0] == '\0') {
1310 debug3("%s: gssapi identity mapping failed", __func__);
1311 } else {
1312 debug3("%s: gssapi identity mapped to %s", __func__, *lname);
1313 }
1314
1315 return(0);
1316}
b59afbfe 1317#endif /* GSSAPI */
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