2 * Copyright 2002 Niels Provos <provos@citi.umich.edu>
3 * Copyright 2002 Markus Friedl <markus@openbsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
28 RCSID("$OpenBSD: monitor_wrap.c,v 1.26 2003/04/07 08:29:57 markus Exp $");
30 #include <openssl/bn.h>
31 #include <openssl/dh.h>
37 #include "auth-options.h"
45 #include "monitor_wrap.h"
48 #include "monitor_fdpass.h"
57 extern Newkeys *newkeys[];
58 extern z_stream incoming_stream;
59 extern z_stream outgoing_stream;
60 extern struct monitor *pmonitor;
61 extern Buffer input, output;
64 mm_request_send(int socket, enum monitor_reqtype type, Buffer *m)
66 u_int mlen = buffer_len(m);
69 debug3("%s entering: type %d", __func__, type);
71 PUT_32BIT(buf, mlen + 1);
72 buf[4] = (u_char) type; /* 1st byte of payload is mesg-type */
73 if (atomicio(write, socket, buf, sizeof(buf)) != sizeof(buf))
74 fatal("%s: write", __func__);
75 if (atomicio(write, socket, buffer_ptr(m), mlen) != mlen)
76 fatal("%s: write", __func__);
80 mm_request_receive(int socket, Buffer *m)
86 debug3("%s entering", __func__);
88 res = atomicio(read, socket, buf, sizeof(buf));
89 if (res != sizeof(buf)) {
92 fatal("%s: read: %ld", __func__, (long)res);
94 msg_len = GET_32BIT(buf);
95 if (msg_len > 256 * 1024)
96 fatal("%s: read: bad msg_len %d", __func__, msg_len);
98 buffer_append_space(m, msg_len);
99 res = atomicio(read, socket, buffer_ptr(m), msg_len);
101 fatal("%s: read: %ld != msg_len", __func__, (long)res);
105 mm_request_receive_expect(int socket, enum monitor_reqtype type, Buffer *m)
109 debug3("%s entering: type %d", __func__, type);
111 mm_request_receive(socket, m);
112 rtype = buffer_get_char(m);
114 fatal("%s: read: rtype %d != type %d", __func__,
119 mm_choose_dh(int min, int nbits, int max)
126 buffer_put_int(&m, min);
127 buffer_put_int(&m, nbits);
128 buffer_put_int(&m, max);
130 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_MODULI, &m);
132 debug3("%s: waiting for MONITOR_ANS_MODULI", __func__);
133 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_MODULI, &m);
135 success = buffer_get_char(&m);
137 fatal("%s: MONITOR_ANS_MODULI failed", __func__);
139 if ((p = BN_new()) == NULL)
140 fatal("%s: BN_new failed", __func__);
141 if ((g = BN_new()) == NULL)
142 fatal("%s: BN_new failed", __func__);
143 buffer_get_bignum2(&m, p);
144 buffer_get_bignum2(&m, g);
146 debug3("%s: remaining %d", __func__, buffer_len(&m));
149 return (dh_new_group(g, p));
153 mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen)
155 Kex *kex = *pmonitor->m_pkex;
158 debug3("%s entering", __func__);
161 buffer_put_int(&m, kex->host_key_index(key));
162 buffer_put_string(&m, data, datalen);
164 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SIGN, &m);
166 debug3("%s: waiting for MONITOR_ANS_SIGN", __func__);
167 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SIGN, &m);
168 *sigp = buffer_get_string(&m, lenp);
175 mm_getpwnamallow(const char *login)
181 debug3("%s entering", __func__);
184 buffer_put_cstring(&m, login);
186 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m);
188 debug3("%s: waiting for MONITOR_ANS_PWNAM", __func__);
189 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m);
191 if (buffer_get_char(&m) == 0) {
195 pw = buffer_get_string(&m, &pwlen);
196 if (pwlen != sizeof(struct passwd))
197 fatal("%s: struct passwd size mismatch", __func__);
198 pw->pw_name = buffer_get_string(&m, NULL);
199 pw->pw_passwd = buffer_get_string(&m, NULL);
200 pw->pw_gecos = buffer_get_string(&m, NULL);
201 #ifdef HAVE_PW_CLASS_IN_PASSWD
202 pw->pw_class = buffer_get_string(&m, NULL);
204 pw->pw_dir = buffer_get_string(&m, NULL);
205 pw->pw_shell = buffer_get_string(&m, NULL);
211 char *mm_auth2_read_banner(void)
216 debug3("%s entering", __func__);
219 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m);
222 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTH2_READ_BANNER, &m);
223 banner = buffer_get_string(&m, NULL);
229 /* Inform the privileged process about service and style */
232 mm_inform_authserv(char *service, char *style)
236 debug3("%s entering", __func__);
239 buffer_put_cstring(&m, service);
240 buffer_put_cstring(&m, style ? style : "");
242 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHSERV, &m);
247 /* Do the password authentication */
249 mm_auth_password(Authctxt *authctxt, char *password)
252 int authenticated = 0;
254 debug3("%s entering", __func__);
257 buffer_put_cstring(&m, password);
258 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHPASSWORD, &m);
260 debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __func__);
261 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTHPASSWORD, &m);
263 authenticated = buffer_get_int(&m);
267 debug3("%s: user %sauthenticated",
268 __func__, authenticated ? "" : "not ");
269 return (authenticated);
273 mm_user_key_allowed(struct passwd *pw, Key *key)
275 return (mm_key_allowed(MM_USERKEY, NULL, NULL, key));
279 mm_hostbased_key_allowed(struct passwd *pw, char *user, char *host,
282 return (mm_key_allowed(MM_HOSTKEY, user, host, key));
286 mm_auth_rhosts_rsa_key_allowed(struct passwd *pw, char *user,
287 char *host, Key *key)
291 key->type = KEY_RSA; /* XXX hack for key_to_blob */
292 ret = mm_key_allowed(MM_RSAHOSTKEY, user, host, key);
293 key->type = KEY_RSA1;
298 mm_send_debug(Buffer *m)
302 while (buffer_len(m)) {
303 msg = buffer_get_string(m, NULL);
304 debug3("%s: Sending debug: %s", __func__, msg);
305 packet_send_debug("%s", msg);
311 mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key)
316 int allowed = 0, have_forced = 0;
318 debug3("%s entering", __func__);
320 /* Convert the key to a blob and the pass it over */
321 if (!key_to_blob(key, &blob, &len))
325 buffer_put_int(&m, type);
326 buffer_put_cstring(&m, user ? user : "");
327 buffer_put_cstring(&m, host ? host : "");
328 buffer_put_string(&m, blob, len);
331 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYALLOWED, &m);
333 debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __func__);
334 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYALLOWED, &m);
336 allowed = buffer_get_int(&m);
338 /* fake forced command */
339 auth_clear_options();
340 have_forced = buffer_get_int(&m);
341 forced_command = have_forced ? xstrdup("true") : NULL;
343 /* Send potential debug messages */
352 * This key verify needs to send the key type along, because the
353 * privileged parent makes the decision if the key is allowed
354 * for authentication.
358 mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
365 debug3("%s entering", __func__);
367 /* Convert the key to a blob and the pass it over */
368 if (!key_to_blob(key, &blob, &len))
372 buffer_put_string(&m, blob, len);
373 buffer_put_string(&m, sig, siglen);
374 buffer_put_string(&m, data, datalen);
377 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYVERIFY, &m);
379 debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __func__);
380 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYVERIFY, &m);
382 verified = buffer_get_int(&m);
389 /* Export key state after authentication */
391 mm_newkeys_from_blob(u_char *blob, int blen)
395 Newkeys *newkey = NULL;
400 debug3("%s: %p(%d)", __func__, blob, blen);
402 dump_base64(stderr, blob, blen);
405 buffer_append(&b, blob, blen);
407 newkey = xmalloc(sizeof(*newkey));
410 comp = &newkey->comp;
413 enc->name = buffer_get_string(&b, NULL);
414 buffer_get(&b, &enc->cipher, sizeof(enc->cipher));
415 enc->enabled = buffer_get_int(&b);
416 enc->block_size = buffer_get_int(&b);
417 enc->key = buffer_get_string(&b, &enc->key_len);
418 enc->iv = buffer_get_string(&b, &len);
419 if (len != enc->block_size)
420 fatal("%s: bad ivlen: expected %u != %u", __func__,
421 enc->block_size, len);
423 if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher)
424 fatal("%s: bad cipher name %s or pointer %p", __func__,
425 enc->name, enc->cipher);
428 mac->name = buffer_get_string(&b, NULL);
429 if (mac->name == NULL || mac_init(mac, mac->name) == -1)
430 fatal("%s: can not init mac %s", __func__, mac->name);
431 mac->enabled = buffer_get_int(&b);
432 mac->key = buffer_get_string(&b, &len);
433 if (len > mac->key_len)
434 fatal("%s: bad mac key length: %u > %d", __func__, len,
439 comp->type = buffer_get_int(&b);
440 comp->enabled = buffer_get_int(&b);
441 comp->name = buffer_get_string(&b, NULL);
443 len = buffer_len(&b);
445 error("newkeys_from_blob: remaining bytes in blob %u", len);
451 mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
458 Newkeys *newkey = newkeys[mode];
460 debug3("%s: converting %p", __func__, newkey);
462 if (newkey == NULL) {
463 error("%s: newkey == NULL", __func__);
468 comp = &newkey->comp;
472 buffer_put_cstring(&b, enc->name);
473 /* The cipher struct is constant and shared, you export pointer */
474 buffer_append(&b, &enc->cipher, sizeof(enc->cipher));
475 buffer_put_int(&b, enc->enabled);
476 buffer_put_int(&b, enc->block_size);
477 buffer_put_string(&b, enc->key, enc->key_len);
478 packet_get_keyiv(mode, enc->iv, enc->block_size);
479 buffer_put_string(&b, enc->iv, enc->block_size);
482 buffer_put_cstring(&b, mac->name);
483 buffer_put_int(&b, mac->enabled);
484 buffer_put_string(&b, mac->key, mac->key_len);
487 buffer_put_int(&b, comp->type);
488 buffer_put_int(&b, comp->enabled);
489 buffer_put_cstring(&b, comp->name);
491 len = buffer_len(&b);
495 *blobp = xmalloc(len);
496 memcpy(*blobp, buffer_ptr(&b), len);
498 memset(buffer_ptr(&b), 0, len);
504 mm_send_kex(Buffer *m, Kex *kex)
506 buffer_put_string(m, kex->session_id, kex->session_id_len);
507 buffer_put_int(m, kex->we_need);
508 buffer_put_int(m, kex->hostkey_type);
509 buffer_put_int(m, kex->kex_type);
510 buffer_put_string(m, buffer_ptr(&kex->my), buffer_len(&kex->my));
511 buffer_put_string(m, buffer_ptr(&kex->peer), buffer_len(&kex->peer));
512 buffer_put_int(m, kex->flags);
513 buffer_put_cstring(m, kex->client_version_string);
514 buffer_put_cstring(m, kex->server_version_string);
518 mm_send_keystate(struct monitor *pmonitor)
523 u_int32_t seqnr, packets;
533 buffer_put_int(&m, packet_get_protocol_flags());
535 buffer_put_int(&m, packet_get_ssh1_cipher());
537 debug3("%s: Sending ssh1 KEY+IV", __func__);
538 keylen = packet_get_encryption_key(NULL);
539 key = xmalloc(keylen+1); /* add 1 if keylen == 0 */
540 keylen = packet_get_encryption_key(key);
541 buffer_put_string(&m, key, keylen);
542 memset(key, 0, keylen);
545 ivlen = packet_get_keyiv_len(MODE_OUT);
546 packet_get_keyiv(MODE_OUT, iv, ivlen);
547 buffer_put_string(&m, iv, ivlen);
548 ivlen = packet_get_keyiv_len(MODE_OUT);
549 packet_get_keyiv(MODE_IN, iv, ivlen);
550 buffer_put_string(&m, iv, ivlen);
553 /* Kex for rekeying */
554 mm_send_kex(&m, *pmonitor->m_pkex);
557 debug3("%s: Sending new keys: %p %p",
558 __func__, newkeys[MODE_OUT], newkeys[MODE_IN]);
561 if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen))
562 fatal("%s: conversion of newkeys failed", __func__);
564 buffer_put_string(&m, blob, bloblen);
567 if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen))
568 fatal("%s: conversion of newkeys failed", __func__);
570 buffer_put_string(&m, blob, bloblen);
573 packet_get_state(MODE_OUT, &seqnr, &blocks, &packets);
574 buffer_put_int(&m, seqnr);
575 buffer_put_int64(&m, blocks);
576 buffer_put_int(&m, packets);
577 packet_get_state(MODE_IN, &seqnr, &blocks, &packets);
578 buffer_put_int(&m, seqnr);
579 buffer_put_int64(&m, blocks);
580 buffer_put_int(&m, packets);
582 debug3("%s: New keys have been sent", __func__);
584 /* More key context */
585 plen = packet_get_keycontext(MODE_OUT, NULL);
587 packet_get_keycontext(MODE_OUT, p);
588 buffer_put_string(&m, p, plen);
591 plen = packet_get_keycontext(MODE_IN, NULL);
593 packet_get_keycontext(MODE_IN, p);
594 buffer_put_string(&m, p, plen);
597 /* Compression state */
598 debug3("%s: Sending compression state", __func__);
599 buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream));
600 buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream));
602 /* Network I/O buffers */
603 buffer_put_string(&m, buffer_ptr(&input), buffer_len(&input));
604 buffer_put_string(&m, buffer_ptr(&output), buffer_len(&output));
606 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
607 debug3("%s: Finished sending state", __func__);
613 mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
620 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m);
622 debug3("%s: waiting for MONITOR_ANS_PTY", __func__);
623 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PTY, &m);
625 success = buffer_get_int(&m);
627 debug3("%s: pty alloc failed", __func__);
631 p = buffer_get_string(&m, NULL);
634 strlcpy(namebuf, p, namebuflen); /* Possible truncation */
637 *ptyfd = mm_receive_fd(pmonitor->m_recvfd);
638 *ttyfd = mm_receive_fd(pmonitor->m_recvfd);
645 mm_session_pty_cleanup2(void *session)
647 Session *s = session;
653 buffer_put_cstring(&m, s->tty);
654 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTYCLEANUP, &m);
657 /* closed dup'ed master */
658 if (close(s->ptymaster) < 0)
659 error("close(s->ptymaster): %s", strerror(errno));
661 /* unlink pty from session */
667 mm_start_pam(char *user)
671 debug3("%s entering", __func__);
674 buffer_put_cstring(&m, user);
676 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m);
682 mm_sshpam_init_ctx(Authctxt *authctxt)
687 debug3("%s", __func__);
689 buffer_put_cstring(&m, authctxt->user);
690 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m);
691 debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__);
692 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m);
693 success = buffer_get_int(&m);
695 debug3("%s: pam_init_ctx failed", __func__);
704 mm_sshpam_query(void *ctx, char **name, char **info,
705 u_int *num, char ***prompts, u_int **echo_on)
710 debug3("%s", __func__);
712 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_QUERY, &m);
713 debug3("%s: waiting for MONITOR_ANS_PAM_QUERY", __func__);
714 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_QUERY, &m);
715 ret = buffer_get_int(&m);
716 debug3("%s: pam_query returned %d", __func__, ret);
717 *name = buffer_get_string(&m, NULL);
718 *info = buffer_get_string(&m, NULL);
719 *num = buffer_get_int(&m);
720 *prompts = xmalloc((*num + 1) * sizeof(char *));
721 *echo_on = xmalloc((*num + 1) * sizeof(u_int));
722 for (i = 0; i < *num; ++i) {
723 (*prompts)[i] = buffer_get_string(&m, NULL);
724 (*echo_on)[i] = buffer_get_int(&m);
731 mm_sshpam_respond(void *ctx, u_int num, char **resp)
736 debug3("%s", __func__);
738 buffer_put_int(&m, num);
739 for (i = 0; i < num; ++i)
740 buffer_put_cstring(&m, resp[i]);
741 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_RESPOND, &m);
742 debug3("%s: waiting for MONITOR_ANS_PAM_RESPOND", __func__);
743 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_RESPOND, &m);
744 ret = buffer_get_int(&m);
745 debug3("%s: pam_respond returned %d", __func__, ret);
751 mm_sshpam_free_ctx(void *ctxtp)
755 debug3("%s", __func__);
757 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_FREE_CTX, &m);
758 debug3("%s: waiting for MONITOR_ANS_PAM_FREE_CTX", __func__);
759 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_FREE_CTX, &m);
764 /* Request process termination */
772 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_TERM, &m);
777 mm_ssh1_session_key(BIGNUM *num)
783 buffer_put_bignum2(&m, num);
784 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSKEY, &m);
786 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SESSKEY, &m);
788 rsafail = buffer_get_int(&m);
789 buffer_get_bignum2(&m, num);
797 mm_chall_setup(char **name, char **infotxt, u_int *numprompts,
798 char ***prompts, u_int **echo_on)
801 *infotxt = xstrdup("");
803 *prompts = xmalloc(*numprompts * sizeof(char *));
804 *echo_on = xmalloc(*numprompts * sizeof(u_int));
809 mm_bsdauth_query(void *ctx, char **name, char **infotxt,
810 u_int *numprompts, char ***prompts, u_int **echo_on)
816 debug3("%s: entering", __func__);
819 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHQUERY, &m);
821 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_BSDAUTHQUERY,
823 success = buffer_get_int(&m);
825 debug3("%s: no challenge", __func__);
830 /* Get the challenge, and format the response */
831 challenge = buffer_get_string(&m, NULL);
834 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
835 (*prompts)[0] = challenge;
837 debug3("%s: received challenge: %s", __func__, challenge);
843 mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses)
848 debug3("%s: entering", __func__);
849 if (numresponses != 1)
853 buffer_put_cstring(&m, responses[0]);
854 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHRESPOND, &m);
856 mm_request_receive_expect(pmonitor->m_recvfd,
857 MONITOR_ANS_BSDAUTHRESPOND, &m);
859 authok = buffer_get_int(&m);
862 return ((authok == 0) ? -1 : 0);
866 mm_skey_query(void *ctx, char **name, char **infotxt,
867 u_int *numprompts, char ***prompts, u_int **echo_on)
874 debug3("%s: entering", __func__);
877 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYQUERY, &m);
879 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SKEYQUERY,
881 success = buffer_get_int(&m);
883 debug3("%s: no challenge", __func__);
888 /* Get the challenge, and format the response */
889 challenge = buffer_get_string(&m, NULL);
892 debug3("%s: received challenge: %s", __func__, challenge);
894 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
896 len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
898 strlcpy(p, challenge, len);
899 strlcat(p, SKEY_PROMPT, len);
907 mm_skey_respond(void *ctx, u_int numresponses, char **responses)
912 debug3("%s: entering", __func__);
913 if (numresponses != 1)
917 buffer_put_cstring(&m, responses[0]);
918 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYRESPOND, &m);
920 mm_request_receive_expect(pmonitor->m_recvfd,
921 MONITOR_ANS_SKEYRESPOND, &m);
923 authok = buffer_get_int(&m);
926 return ((authok == 0) ? -1 : 0);
930 mm_ssh1_session_id(u_char session_id[16])
935 debug3("%s entering", __func__);
938 for (i = 0; i < 16; i++)
939 buffer_put_char(&m, session_id[i]);
941 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSID, &m);
946 mm_auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
952 int allowed = 0, have_forced = 0;
954 debug3("%s entering", __func__);
957 buffer_put_bignum2(&m, client_n);
959 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSAKEYALLOWED, &m);
960 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSAKEYALLOWED, &m);
962 allowed = buffer_get_int(&m);
964 /* fake forced command */
965 auth_clear_options();
966 have_forced = buffer_get_int(&m);
967 forced_command = have_forced ? xstrdup("true") : NULL;
969 if (allowed && rkey != NULL) {
970 blob = buffer_get_string(&m, &blen);
971 if ((key = key_from_blob(blob, blen)) == NULL)
972 fatal("%s: key_from_blob failed", __func__);
983 mm_auth_rsa_generate_challenge(Key *key)
990 debug3("%s entering", __func__);
992 if ((challenge = BN_new()) == NULL)
993 fatal("%s: BN_new failed", __func__);
995 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
996 if (key_to_blob(key, &blob, &blen) == 0)
997 fatal("%s: key_to_blob failed", __func__);
998 key->type = KEY_RSA1;
1001 buffer_put_string(&m, blob, blen);
1004 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSACHALLENGE, &m);
1005 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSACHALLENGE, &m);
1007 buffer_get_bignum2(&m, challenge);
1014 mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
1021 debug3("%s entering", __func__);
1023 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1024 if (key_to_blob(key, &blob, &blen) == 0)
1025 fatal("%s: key_to_blob failed", __func__);
1026 key->type = KEY_RSA1;
1029 buffer_put_string(&m, blob, blen);
1030 buffer_put_string(&m, response, 16);
1033 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSARESPONSE, &m);
1034 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSARESPONSE, &m);
1036 success = buffer_get_int(&m);
1044 mm_auth_krb4(Authctxt *authctxt, void *_auth, char **client, void *_reply)
1052 debug3("%s entering", __func__);
1057 buffer_put_string(&m, auth->dat, auth->length);
1059 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB4, &m);
1060 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB4, &m);
1062 success = buffer_get_int(&m);
1064 *client = buffer_get_string(&m, NULL);
1065 p = buffer_get_string(&m, &rlen);
1066 if (rlen >= MAX_KTXT_LEN)
1067 fatal("%s: reply from monitor too large", __func__);
1068 reply->length = rlen;
1069 memcpy(reply->dat, p, rlen);
1080 mm_auth_krb5(void *ctx, void *argp, char **userp, void *resp)
1082 krb5_data *tkt, *reply;
1086 debug3("%s entering", __func__);
1087 tkt = (krb5_data *) argp;
1088 reply = (krb5_data *) resp;
1091 buffer_put_string(&m, tkt->data, tkt->length);
1093 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB5, &m);
1094 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB5, &m);
1096 success = buffer_get_int(&m);
1100 *userp = buffer_get_string(&m, NULL);
1101 reply->data = buffer_get_string(&m, &len);
1102 reply->length = len;
1104 memset(reply, 0, sizeof(*reply));