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 1.40 2005/05/24 17:32:43 avsm Exp $");
30 #include <openssl/bn.h>
31 #include <openssl/dh.h>
37 #include "auth-options.h"
43 #ifdef TARGET_OS_MAC /* XXX Broken krb5 headers on Mac */
46 #define TARGET_OS_MAC 1
51 #include "monitor_wrap.h"
54 #include "monitor_fdpass.h"
68 extern Newkeys *newkeys[];
69 extern z_stream incoming_stream;
70 extern z_stream outgoing_stream;
71 extern struct monitor *pmonitor;
72 extern Buffer input, output;
73 extern Buffer loginmsg;
74 extern ServerOptions options;
75 extern Buffer loginmsg;
81 * m_pid is only set in the privileged part, and
82 * points to the unprivileged child.
84 return (pmonitor && pmonitor->m_pid > 0);
88 mm_request_send(int sock, enum monitor_reqtype type, Buffer *m)
90 u_int mlen = buffer_len(m);
93 debug3("%s entering: type %d", __func__, type);
95 PUT_32BIT(buf, mlen + 1);
96 buf[4] = (u_char) type; /* 1st byte of payload is mesg-type */
97 if (atomicio(vwrite, sock, buf, sizeof(buf)) != sizeof(buf))
98 fatal("%s: write: %s", __func__, strerror(errno));
99 if (atomicio(vwrite, sock, buffer_ptr(m), mlen) != mlen)
100 fatal("%s: write: %s", __func__, strerror(errno));
104 mm_request_receive(int sock, Buffer *m)
109 debug3("%s entering", __func__);
111 if (atomicio(read, sock, buf, sizeof(buf)) != sizeof(buf)) {
114 fatal("%s: read: %s", __func__, strerror(errno));
116 msg_len = GET_32BIT(buf);
117 if (msg_len > 256 * 1024)
118 fatal("%s: read: bad msg_len %d", __func__, msg_len);
120 buffer_append_space(m, msg_len);
121 if (atomicio(read, sock, buffer_ptr(m), msg_len) != msg_len)
122 fatal("%s: read: %s", __func__, strerror(errno));
126 mm_request_receive_expect(int sock, enum monitor_reqtype type, Buffer *m)
130 debug3("%s entering: type %d", __func__, type);
132 mm_request_receive(sock, m);
133 rtype = buffer_get_char(m);
135 fatal("%s: read: rtype %d != type %d", __func__,
140 mm_choose_dh(int min, int nbits, int max)
147 buffer_put_int(&m, min);
148 buffer_put_int(&m, nbits);
149 buffer_put_int(&m, max);
151 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_MODULI, &m);
153 debug3("%s: waiting for MONITOR_ANS_MODULI", __func__);
154 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_MODULI, &m);
156 success = buffer_get_char(&m);
158 fatal("%s: MONITOR_ANS_MODULI failed", __func__);
160 if ((p = BN_new()) == NULL)
161 fatal("%s: BN_new failed", __func__);
162 if ((g = BN_new()) == NULL)
163 fatal("%s: BN_new failed", __func__);
164 buffer_get_bignum2(&m, p);
165 buffer_get_bignum2(&m, g);
167 debug3("%s: remaining %d", __func__, buffer_len(&m));
170 return (dh_new_group(g, p));
174 mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen)
176 Kex *kex = *pmonitor->m_pkex;
179 debug3("%s entering", __func__);
182 buffer_put_int(&m, kex->host_key_index(key));
183 buffer_put_string(&m, data, datalen);
185 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SIGN, &m);
187 debug3("%s: waiting for MONITOR_ANS_SIGN", __func__);
188 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SIGN, &m);
189 *sigp = buffer_get_string(&m, lenp);
196 mm_getpwnamallow(const char *username)
202 debug3("%s entering", __func__);
205 buffer_put_cstring(&m, username);
207 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m);
209 debug3("%s: waiting for MONITOR_ANS_PWNAM", __func__);
210 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m);
212 if (buffer_get_char(&m) == 0) {
216 pw = buffer_get_string(&m, &pwlen);
217 if (pwlen != sizeof(struct passwd))
218 fatal("%s: struct passwd size mismatch", __func__);
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);
225 pw->pw_dir = buffer_get_string(&m, NULL);
226 pw->pw_shell = buffer_get_string(&m, NULL);
233 mm_auth2_read_banner(void)
238 debug3("%s entering", __func__);
241 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m);
244 mm_request_receive_expect(pmonitor->m_recvfd,
245 MONITOR_ANS_AUTH2_READ_BANNER, &m);
246 banner = buffer_get_string(&m, NULL);
249 /* treat empty banner as missing banner */
250 if (strlen(banner) == 0) {
257 /* Inform the privileged process about service and style */
260 mm_inform_authserv(char *service, char *style)
264 debug3("%s entering", __func__);
267 buffer_put_cstring(&m, service);
268 buffer_put_cstring(&m, style ? style : "");
270 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHSERV, &m);
275 /* Do the password authentication */
277 mm_auth_password(Authctxt *authctxt, char *password)
280 int authenticated = 0;
282 debug3("%s entering", __func__);
285 buffer_put_cstring(&m, password);
286 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHPASSWORD, &m);
288 debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __func__);
289 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTHPASSWORD, &m);
291 authenticated = buffer_get_int(&m);
295 debug3("%s: user %sauthenticated",
296 __func__, authenticated ? "" : "not ");
297 return (authenticated);
301 mm_user_key_allowed(struct passwd *pw, Key *key)
303 return (mm_key_allowed(MM_USERKEY, NULL, NULL, key));
307 mm_hostbased_key_allowed(struct passwd *pw, char *user, char *host,
310 return (mm_key_allowed(MM_HOSTKEY, user, host, key));
314 mm_auth_rhosts_rsa_key_allowed(struct passwd *pw, char *user,
315 char *host, Key *key)
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;
326 mm_send_debug(Buffer *m)
330 while (buffer_len(m)) {
331 msg = buffer_get_string(m, NULL);
332 debug3("%s: Sending debug: %s", __func__, msg);
333 packet_send_debug("%s", msg);
339 mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key)
344 int allowed = 0, have_forced = 0;
346 debug3("%s entering", __func__);
348 /* Convert the key to a blob and the pass it over */
349 if (!key_to_blob(key, &blob, &len))
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);
359 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYALLOWED, &m);
361 debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __func__);
362 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYALLOWED, &m);
364 allowed = buffer_get_int(&m);
366 /* fake forced command */
367 auth_clear_options();
368 have_forced = buffer_get_int(&m);
369 forced_command = have_forced ? xstrdup("true") : NULL;
371 /* Send potential debug messages */
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.
386 mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
393 debug3("%s entering", __func__);
395 /* Convert the key to a blob and the pass it over */
396 if (!key_to_blob(key, &blob, &len))
400 buffer_put_string(&m, blob, len);
401 buffer_put_string(&m, sig, siglen);
402 buffer_put_string(&m, data, datalen);
405 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYVERIFY, &m);
407 debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __func__);
408 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYVERIFY, &m);
410 verified = buffer_get_int(&m);
417 /* Export key state after authentication */
419 mm_newkeys_from_blob(u_char *blob, int blen)
423 Newkeys *newkey = NULL;
428 debug3("%s: %p(%d)", __func__, blob, blen);
430 dump_base64(stderr, blob, blen);
433 buffer_append(&b, blob, blen);
435 newkey = xmalloc(sizeof(*newkey));
438 comp = &newkey->comp;
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)
448 fatal("%s: bad ivlen: expected %u != %u", __func__,
449 enc->block_size, len);
451 if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher)
452 fatal("%s: bad cipher name %s or pointer %p", __func__,
453 enc->name, enc->cipher);
456 mac->name = buffer_get_string(&b, NULL);
457 if (mac->name == NULL || mac_init(mac, mac->name) == -1)
458 fatal("%s: can not init mac %s", __func__, mac->name);
459 mac->enabled = buffer_get_int(&b);
460 mac->key = buffer_get_string(&b, &len);
461 if (len > mac->key_len)
462 fatal("%s: bad mac key length: %u > %d", __func__, len,
467 comp->type = buffer_get_int(&b);
468 comp->enabled = buffer_get_int(&b);
469 comp->name = buffer_get_string(&b, NULL);
471 len = buffer_len(&b);
473 error("newkeys_from_blob: remaining bytes in blob %u", len);
479 mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
486 Newkeys *newkey = newkeys[mode];
488 debug3("%s: converting %p", __func__, newkey);
490 if (newkey == NULL) {
491 error("%s: newkey == NULL", __func__);
496 comp = &newkey->comp;
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);
510 buffer_put_cstring(&b, mac->name);
511 buffer_put_int(&b, mac->enabled);
512 buffer_put_string(&b, mac->key, mac->key_len);
515 buffer_put_int(&b, comp->type);
516 buffer_put_int(&b, comp->enabled);
517 buffer_put_cstring(&b, comp->name);
519 len = buffer_len(&b);
523 *blobp = xmalloc(len);
524 memcpy(*blobp, buffer_ptr(&b), len);
526 memset(buffer_ptr(&b), 0, len);
532 mm_send_kex(Buffer *m, Kex *kex)
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);
546 mm_send_keystate(struct monitor *monitor)
551 u_int32_t seqnr, packets;
561 buffer_put_int(&m, packet_get_protocol_flags());
563 buffer_put_int(&m, packet_get_ssh1_cipher());
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);
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);
581 /* Kex for rekeying */
582 mm_send_kex(&m, *monitor->m_pkex);
585 debug3("%s: Sending new keys: %p %p",
586 __func__, newkeys[MODE_OUT], newkeys[MODE_IN]);
589 if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen))
590 fatal("%s: conversion of newkeys failed", __func__);
592 buffer_put_string(&m, blob, bloblen);
595 if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen))
596 fatal("%s: conversion of newkeys failed", __func__);
598 buffer_put_string(&m, blob, bloblen);
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);
610 debug3("%s: New keys have been sent", __func__);
612 /* More key context */
613 plen = packet_get_keycontext(MODE_OUT, NULL);
615 packet_get_keycontext(MODE_OUT, p);
616 buffer_put_string(&m, p, plen);
619 plen = packet_get_keycontext(MODE_IN, NULL);
621 packet_get_keycontext(MODE_IN, p);
622 buffer_put_string(&m, p, plen);
625 /* Compression state */
626 debug3("%s: Sending compression state", __func__);
627 buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream));
628 buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream));
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));
634 mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
635 debug3("%s: Finished sending state", __func__);
641 mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
648 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m);
650 debug3("%s: waiting for MONITOR_ANS_PTY", __func__);
651 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PTY, &m);
653 success = buffer_get_int(&m);
655 debug3("%s: pty alloc failed", __func__);
659 p = buffer_get_string(&m, NULL);
660 msg = buffer_get_string(&m, NULL);
663 strlcpy(namebuf, p, namebuflen); /* Possible truncation */
666 buffer_append(&loginmsg, msg, strlen(msg));
669 *ptyfd = mm_receive_fd(pmonitor->m_recvfd);
670 *ttyfd = mm_receive_fd(pmonitor->m_recvfd);
677 mm_session_pty_cleanup2(Session *s)
684 buffer_put_cstring(&m, s->tty);
685 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTYCLEANUP, &m);
688 /* closed dup'ed master */
689 if (close(s->ptymaster) < 0)
690 error("close(s->ptymaster): %s", strerror(errno));
692 /* unlink pty from session */
698 mm_start_pam(Authctxt *authctxt)
702 debug3("%s entering", __func__);
703 if (!options.use_pam)
704 fatal("UsePAM=no, but ended up in %s anyway", __func__);
707 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m);
713 mm_do_pam_account(void)
719 debug3("%s entering", __func__);
720 if (!options.use_pam)
721 fatal("UsePAM=no, but ended up in %s anyway", __func__);
724 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_ACCOUNT, &m);
726 mm_request_receive_expect(pmonitor->m_recvfd,
727 MONITOR_ANS_PAM_ACCOUNT, &m);
728 ret = buffer_get_int(&m);
729 msg = buffer_get_string(&m, NULL);
730 buffer_append(&loginmsg, msg, strlen(msg));
735 debug3("%s returning %d", __func__, ret);
741 mm_sshpam_init_ctx(Authctxt *authctxt)
746 debug3("%s", __func__);
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);
754 debug3("%s: pam_init_ctx failed", __func__);
763 mm_sshpam_query(void *ctx, char **name, char **info,
764 u_int *num, char ***prompts, u_int **echo_on)
770 debug3("%s", __func__);
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);
791 mm_sshpam_respond(void *ctx, u_int num, char **resp)
797 debug3("%s", __func__);
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);
812 mm_sshpam_free_ctx(void *ctxtp)
816 debug3("%s", __func__);
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);
825 /* Request process termination */
833 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_TERM, &m);
838 mm_ssh1_session_key(BIGNUM *num)
844 buffer_put_bignum2(&m, num);
845 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSKEY, &m);
847 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SESSKEY, &m);
849 rsafail = buffer_get_int(&m);
850 buffer_get_bignum2(&m, num);
858 mm_chall_setup(char **name, char **infotxt, u_int *numprompts,
859 char ***prompts, u_int **echo_on)
862 *infotxt = xstrdup("");
864 *prompts = xmalloc(*numprompts * sizeof(char *));
865 *echo_on = xmalloc(*numprompts * sizeof(u_int));
870 mm_bsdauth_query(void *ctx, char **name, char **infotxt,
871 u_int *numprompts, char ***prompts, u_int **echo_on)
877 debug3("%s: entering", __func__);
880 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHQUERY, &m);
882 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_BSDAUTHQUERY,
884 success = buffer_get_int(&m);
886 debug3("%s: no challenge", __func__);
891 /* Get the challenge, and format the response */
892 challenge = buffer_get_string(&m, NULL);
895 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
896 (*prompts)[0] = challenge;
898 debug3("%s: received challenge: %s", __func__, challenge);
904 mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses)
909 debug3("%s: entering", __func__);
910 if (numresponses != 1)
914 buffer_put_cstring(&m, responses[0]);
915 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHRESPOND, &m);
917 mm_request_receive_expect(pmonitor->m_recvfd,
918 MONITOR_ANS_BSDAUTHRESPOND, &m);
920 authok = buffer_get_int(&m);
923 return ((authok == 0) ? -1 : 0);
928 mm_skey_query(void *ctx, char **name, char **infotxt,
929 u_int *numprompts, char ***prompts, u_int **echo_on)
936 debug3("%s: entering", __func__);
939 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYQUERY, &m);
941 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SKEYQUERY,
943 success = buffer_get_int(&m);
945 debug3("%s: no challenge", __func__);
950 /* Get the challenge, and format the response */
951 challenge = buffer_get_string(&m, NULL);
954 debug3("%s: received challenge: %s", __func__, challenge);
956 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
958 len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
960 strlcpy(p, challenge, len);
961 strlcat(p, SKEY_PROMPT, len);
969 mm_skey_respond(void *ctx, u_int numresponses, char **responses)
974 debug3("%s: entering", __func__);
975 if (numresponses != 1)
979 buffer_put_cstring(&m, responses[0]);
980 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYRESPOND, &m);
982 mm_request_receive_expect(pmonitor->m_recvfd,
983 MONITOR_ANS_SKEYRESPOND, &m);
985 authok = buffer_get_int(&m);
988 return ((authok == 0) ? -1 : 0);
993 mm_ssh1_session_id(u_char session_id[16])
998 debug3("%s entering", __func__);
1001 for (i = 0; i < 16; i++)
1002 buffer_put_char(&m, session_id[i]);
1004 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSID, &m);
1009 mm_auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
1015 int allowed = 0, have_forced = 0;
1017 debug3("%s entering", __func__);
1020 buffer_put_bignum2(&m, client_n);
1022 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSAKEYALLOWED, &m);
1023 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSAKEYALLOWED, &m);
1025 allowed = buffer_get_int(&m);
1027 /* fake forced command */
1028 auth_clear_options();
1029 have_forced = buffer_get_int(&m);
1030 forced_command = have_forced ? xstrdup("true") : NULL;
1032 if (allowed && rkey != NULL) {
1033 blob = buffer_get_string(&m, &blen);
1034 if ((key = key_from_blob(blob, blen)) == NULL)
1035 fatal("%s: key_from_blob failed", __func__);
1046 mm_auth_rsa_generate_challenge(Key *key)
1053 debug3("%s entering", __func__);
1055 if ((challenge = BN_new()) == NULL)
1056 fatal("%s: BN_new failed", __func__);
1058 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1059 if (key_to_blob(key, &blob, &blen) == 0)
1060 fatal("%s: key_to_blob failed", __func__);
1061 key->type = KEY_RSA1;
1064 buffer_put_string(&m, blob, blen);
1067 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSACHALLENGE, &m);
1068 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSACHALLENGE, &m);
1070 buffer_get_bignum2(&m, challenge);
1077 mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
1084 debug3("%s entering", __func__);
1086 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1087 if (key_to_blob(key, &blob, &blen) == 0)
1088 fatal("%s: key_to_blob failed", __func__);
1089 key->type = KEY_RSA1;
1092 buffer_put_string(&m, blob, blen);
1093 buffer_put_string(&m, response, 16);
1096 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSARESPONSE, &m);
1097 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSARESPONSE, &m);
1099 success = buffer_get_int(&m);
1105 #ifdef SSH_AUDIT_EVENTS
1107 mm_audit_event(ssh_audit_event_t event)
1111 debug3("%s entering", __func__);
1114 buffer_put_int(&m, event);
1116 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_EVENT, &m);
1121 mm_audit_run_command(const char *command)
1125 debug3("%s entering command %s", __func__, command);
1128 buffer_put_cstring(&m, command);
1130 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_COMMAND, &m);
1133 #endif /* SSH_AUDIT_EVENTS */
1137 mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID goid)
1142 /* Client doesn't get to see the context */
1146 buffer_put_string(&m, goid->elements, goid->length);
1148 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
1149 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
1151 major = buffer_get_int(&m);
1158 mm_ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *in,
1159 gss_buffer_desc *out, OM_uint32 *flags)
1166 buffer_put_string(&m, in->value, in->length);
1168 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
1169 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
1171 major = buffer_get_int(&m);
1172 out->value = buffer_get_string(&m, &len);
1175 *flags = buffer_get_int(&m);
1183 mm_ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
1189 buffer_put_string(&m, gssbuf->value, gssbuf->length);
1190 buffer_put_string(&m, gssmic->value, gssmic->length);
1192 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSCHECKMIC, &m);
1193 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSCHECKMIC,
1196 major = buffer_get_int(&m);
1202 mm_ssh_gssapi_userok(char *user)
1205 int authenticated = 0;
1209 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, &m);
1210 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
1213 authenticated = buffer_get_int(&m);
1216 debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
1217 return (authenticated);