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 $");
31 #include <openssl/bn.h>
32 #include <openssl/dh.h>
38 #include "auth-options.h"
44 #ifdef TARGET_OS_MAC /* XXX Broken krb5 headers on Mac */
47 #define TARGET_OS_MAC 1
52 #include "monitor_wrap.h"
55 #include "monitor_fdpass.h"
69 extern Newkeys *newkeys[];
70 extern z_stream incoming_stream;
71 extern z_stream outgoing_stream;
72 extern struct monitor *pmonitor;
73 extern Buffer input, output;
74 extern Buffer loginmsg;
75 extern ServerOptions options;
76 extern Buffer loginmsg;
82 * m_pid is only set in the privileged part, and
83 * points to the unprivileged child.
85 return (pmonitor && pmonitor->m_pid > 0);
89 mm_request_send(int sock, enum monitor_reqtype type, Buffer *m)
91 u_int mlen = buffer_len(m);
94 debug3("%s entering: type %d", __func__, type);
96 PUT_32BIT(buf, mlen + 1);
97 buf[4] = (u_char) type; /* 1st byte of payload is mesg-type */
98 if (atomicio(vwrite, sock, buf, sizeof(buf)) != sizeof(buf))
99 fatal("%s: write: %s", __func__, strerror(errno));
100 if (atomicio(vwrite, sock, buffer_ptr(m), mlen) != mlen)
101 fatal("%s: write: %s", __func__, strerror(errno));
105 mm_request_receive(int sock, Buffer *m)
110 debug3("%s entering", __func__);
112 if (atomicio(read, sock, buf, sizeof(buf)) != sizeof(buf)) {
115 fatal("%s: read: %s", __func__, strerror(errno));
117 msg_len = GET_32BIT(buf);
118 if (msg_len > 256 * 1024)
119 fatal("%s: read: bad msg_len %d", __func__, msg_len);
121 buffer_append_space(m, msg_len);
122 if (atomicio(read, sock, buffer_ptr(m), msg_len) != msg_len)
123 fatal("%s: read: %s", __func__, strerror(errno));
127 mm_request_receive_expect(int sock, enum monitor_reqtype type, Buffer *m)
131 debug3("%s entering: type %d", __func__, type);
133 mm_request_receive(sock, m);
134 rtype = buffer_get_char(m);
136 fatal("%s: read: rtype %d != type %d", __func__,
141 mm_choose_dh(int min, int nbits, int max)
148 buffer_put_int(&m, min);
149 buffer_put_int(&m, nbits);
150 buffer_put_int(&m, max);
152 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_MODULI, &m);
154 debug3("%s: waiting for MONITOR_ANS_MODULI", __func__);
155 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_MODULI, &m);
157 success = buffer_get_char(&m);
159 fatal("%s: MONITOR_ANS_MODULI failed", __func__);
161 if ((p = BN_new()) == NULL)
162 fatal("%s: BN_new failed", __func__);
163 if ((g = BN_new()) == NULL)
164 fatal("%s: BN_new failed", __func__);
165 buffer_get_bignum2(&m, p);
166 buffer_get_bignum2(&m, g);
168 debug3("%s: remaining %d", __func__, buffer_len(&m));
171 return (dh_new_group(g, p));
175 mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen)
177 Kex *kex = *pmonitor->m_pkex;
180 debug3("%s entering", __func__);
183 buffer_put_int(&m, kex->host_key_index(key));
184 buffer_put_string(&m, data, datalen);
186 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SIGN, &m);
188 debug3("%s: waiting for MONITOR_ANS_SIGN", __func__);
189 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SIGN, &m);
190 *sigp = buffer_get_string(&m, lenp);
197 mm_getpwnamallow(const char *username)
203 debug3("%s entering", __func__);
206 buffer_put_cstring(&m, username);
208 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m);
210 debug3("%s: waiting for MONITOR_ANS_PWNAM", __func__);
211 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m);
213 if (buffer_get_char(&m) == 0) {
217 pw = buffer_get_string(&m, &pwlen);
218 if (pwlen != sizeof(struct passwd))
219 fatal("%s: struct passwd size mismatch", __func__);
220 pw->pw_name = buffer_get_string(&m, NULL);
221 pw->pw_passwd = buffer_get_string(&m, NULL);
222 pw->pw_gecos = buffer_get_string(&m, NULL);
223 #ifdef HAVE_PW_CLASS_IN_PASSWD
224 pw->pw_class = buffer_get_string(&m, NULL);
226 pw->pw_dir = buffer_get_string(&m, NULL);
227 pw->pw_shell = buffer_get_string(&m, NULL);
234 mm_auth2_read_banner(void)
239 debug3("%s entering", __func__);
242 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m);
245 mm_request_receive_expect(pmonitor->m_recvfd,
246 MONITOR_ANS_AUTH2_READ_BANNER, &m);
247 banner = buffer_get_string(&m, NULL);
250 /* treat empty banner as missing banner */
251 if (strlen(banner) == 0) {
258 /* Inform the privileged process about service and style */
261 mm_inform_authserv(char *service, char *style)
265 debug3("%s entering", __func__);
268 buffer_put_cstring(&m, service);
269 buffer_put_cstring(&m, style ? style : "");
271 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHSERV, &m);
276 /* Do the password authentication */
278 mm_auth_password(Authctxt *authctxt, char *password)
281 int authenticated = 0;
283 debug3("%s entering", __func__);
286 buffer_put_cstring(&m, password);
287 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHPASSWORD, &m);
289 debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __func__);
290 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTHPASSWORD, &m);
292 authenticated = buffer_get_int(&m);
296 debug3("%s: user %sauthenticated",
297 __func__, authenticated ? "" : "not ");
298 return (authenticated);
302 mm_user_key_allowed(struct passwd *pw, Key *key)
304 return (mm_key_allowed(MM_USERKEY, NULL, NULL, key));
308 mm_hostbased_key_allowed(struct passwd *pw, char *user, char *host,
311 return (mm_key_allowed(MM_HOSTKEY, user, host, key));
315 mm_auth_rhosts_rsa_key_allowed(struct passwd *pw, char *user,
316 char *host, Key *key)
320 key->type = KEY_RSA; /* XXX hack for key_to_blob */
321 ret = mm_key_allowed(MM_RSAHOSTKEY, user, host, key);
322 key->type = KEY_RSA1;
327 mm_send_debug(Buffer *m)
331 while (buffer_len(m)) {
332 msg = buffer_get_string(m, NULL);
333 debug3("%s: Sending debug: %s", __func__, msg);
334 packet_send_debug("%s", msg);
340 mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key)
345 int allowed = 0, have_forced = 0;
347 debug3("%s entering", __func__);
349 /* Convert the key to a blob and the pass it over */
350 if (!key_to_blob(key, &blob, &len))
354 buffer_put_int(&m, type);
355 buffer_put_cstring(&m, user ? user : "");
356 buffer_put_cstring(&m, host ? host : "");
357 buffer_put_string(&m, blob, len);
360 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYALLOWED, &m);
362 debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __func__);
363 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYALLOWED, &m);
365 allowed = buffer_get_int(&m);
367 /* fake forced command */
368 auth_clear_options();
369 have_forced = buffer_get_int(&m);
370 forced_command = have_forced ? xstrdup("true") : NULL;
372 /* Send potential debug messages */
381 * This key verify needs to send the key type along, because the
382 * privileged parent makes the decision if the key is allowed
383 * for authentication.
387 mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
394 debug3("%s entering", __func__);
396 /* Convert the key to a blob and the pass it over */
397 if (!key_to_blob(key, &blob, &len))
401 buffer_put_string(&m, blob, len);
402 buffer_put_string(&m, sig, siglen);
403 buffer_put_string(&m, data, datalen);
406 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYVERIFY, &m);
408 debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __func__);
409 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYVERIFY, &m);
411 verified = buffer_get_int(&m);
418 /* Export key state after authentication */
420 mm_newkeys_from_blob(u_char *blob, int blen)
424 Newkeys *newkey = NULL;
429 debug3("%s: %p(%d)", __func__, blob, blen);
431 dump_base64(stderr, blob, blen);
434 buffer_append(&b, blob, blen);
436 newkey = xmalloc(sizeof(*newkey));
439 comp = &newkey->comp;
442 enc->name = buffer_get_string(&b, NULL);
443 buffer_get(&b, &enc->cipher, sizeof(enc->cipher));
444 enc->enabled = buffer_get_int(&b);
445 enc->block_size = buffer_get_int(&b);
446 enc->key = buffer_get_string(&b, &enc->key_len);
447 enc->iv = buffer_get_string(&b, &len);
448 if (len != enc->block_size)
449 fatal("%s: bad ivlen: expected %u != %u", __func__,
450 enc->block_size, len);
452 if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher)
453 fatal("%s: bad cipher name %s or pointer %p", __func__,
454 enc->name, enc->cipher);
457 mac->name = buffer_get_string(&b, NULL);
458 if (mac->name == NULL || mac_init(mac, mac->name) == -1)
459 fatal("%s: can not init mac %s", __func__, mac->name);
460 mac->enabled = buffer_get_int(&b);
461 mac->key = buffer_get_string(&b, &len);
462 if (len > mac->key_len)
463 fatal("%s: bad mac key length: %u > %d", __func__, len,
468 comp->type = buffer_get_int(&b);
469 comp->enabled = buffer_get_int(&b);
470 comp->name = buffer_get_string(&b, NULL);
472 len = buffer_len(&b);
474 error("newkeys_from_blob: remaining bytes in blob %u", len);
480 mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
487 Newkeys *newkey = newkeys[mode];
489 debug3("%s: converting %p", __func__, newkey);
491 if (newkey == NULL) {
492 error("%s: newkey == NULL", __func__);
497 comp = &newkey->comp;
501 buffer_put_cstring(&b, enc->name);
502 /* The cipher struct is constant and shared, you export pointer */
503 buffer_append(&b, &enc->cipher, sizeof(enc->cipher));
504 buffer_put_int(&b, enc->enabled);
505 buffer_put_int(&b, enc->block_size);
506 buffer_put_string(&b, enc->key, enc->key_len);
507 packet_get_keyiv(mode, enc->iv, enc->block_size);
508 buffer_put_string(&b, enc->iv, enc->block_size);
511 buffer_put_cstring(&b, mac->name);
512 buffer_put_int(&b, mac->enabled);
513 buffer_put_string(&b, mac->key, mac->key_len);
516 buffer_put_int(&b, comp->type);
517 buffer_put_int(&b, comp->enabled);
518 buffer_put_cstring(&b, comp->name);
520 len = buffer_len(&b);
524 *blobp = xmalloc(len);
525 memcpy(*blobp, buffer_ptr(&b), len);
527 memset(buffer_ptr(&b), 0, len);
533 mm_send_kex(Buffer *m, Kex *kex)
535 buffer_put_string(m, kex->session_id, kex->session_id_len);
536 buffer_put_int(m, kex->we_need);
537 buffer_put_int(m, kex->hostkey_type);
538 buffer_put_int(m, kex->kex_type);
539 buffer_put_string(m, buffer_ptr(&kex->my), buffer_len(&kex->my));
540 buffer_put_string(m, buffer_ptr(&kex->peer), buffer_len(&kex->peer));
541 buffer_put_int(m, kex->flags);
542 buffer_put_cstring(m, kex->client_version_string);
543 buffer_put_cstring(m, kex->server_version_string);
547 mm_send_keystate(struct monitor *monitor)
552 u_int32_t seqnr, packets;
562 buffer_put_int(&m, packet_get_protocol_flags());
564 buffer_put_int(&m, packet_get_ssh1_cipher());
566 debug3("%s: Sending ssh1 KEY+IV", __func__);
567 keylen = packet_get_encryption_key(NULL);
568 key = xmalloc(keylen+1); /* add 1 if keylen == 0 */
569 keylen = packet_get_encryption_key(key);
570 buffer_put_string(&m, key, keylen);
571 memset(key, 0, keylen);
574 ivlen = packet_get_keyiv_len(MODE_OUT);
575 packet_get_keyiv(MODE_OUT, iv, ivlen);
576 buffer_put_string(&m, iv, ivlen);
577 ivlen = packet_get_keyiv_len(MODE_OUT);
578 packet_get_keyiv(MODE_IN, iv, ivlen);
579 buffer_put_string(&m, iv, ivlen);
582 /* Kex for rekeying */
583 mm_send_kex(&m, *monitor->m_pkex);
586 debug3("%s: Sending new keys: %p %p",
587 __func__, newkeys[MODE_OUT], newkeys[MODE_IN]);
590 if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen))
591 fatal("%s: conversion of newkeys failed", __func__);
593 buffer_put_string(&m, blob, bloblen);
596 if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen))
597 fatal("%s: conversion of newkeys failed", __func__);
599 buffer_put_string(&m, blob, bloblen);
602 packet_get_state(MODE_OUT, &seqnr, &blocks, &packets);
603 buffer_put_int(&m, seqnr);
604 buffer_put_int64(&m, blocks);
605 buffer_put_int(&m, packets);
606 packet_get_state(MODE_IN, &seqnr, &blocks, &packets);
607 buffer_put_int(&m, seqnr);
608 buffer_put_int64(&m, blocks);
609 buffer_put_int(&m, packets);
611 debug3("%s: New keys have been sent", __func__);
613 /* More key context */
614 plen = packet_get_keycontext(MODE_OUT, NULL);
616 packet_get_keycontext(MODE_OUT, p);
617 buffer_put_string(&m, p, plen);
620 plen = packet_get_keycontext(MODE_IN, NULL);
622 packet_get_keycontext(MODE_IN, p);
623 buffer_put_string(&m, p, plen);
626 /* Compression state */
627 debug3("%s: Sending compression state", __func__);
628 buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream));
629 buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream));
631 /* Network I/O buffers */
632 buffer_put_string(&m, buffer_ptr(&input), buffer_len(&input));
633 buffer_put_string(&m, buffer_ptr(&output), buffer_len(&output));
635 mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
636 debug3("%s: Finished sending state", __func__);
642 mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
649 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m);
651 debug3("%s: waiting for MONITOR_ANS_PTY", __func__);
652 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PTY, &m);
654 success = buffer_get_int(&m);
656 debug3("%s: pty alloc failed", __func__);
660 p = buffer_get_string(&m, NULL);
661 msg = buffer_get_string(&m, NULL);
664 strlcpy(namebuf, p, namebuflen); /* Possible truncation */
667 buffer_append(&loginmsg, msg, strlen(msg));
670 *ptyfd = mm_receive_fd(pmonitor->m_recvfd);
671 *ttyfd = mm_receive_fd(pmonitor->m_recvfd);
678 mm_session_pty_cleanup2(Session *s)
685 buffer_put_cstring(&m, s->tty);
686 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTYCLEANUP, &m);
689 /* closed dup'ed master */
690 if (close(s->ptymaster) < 0)
691 error("close(s->ptymaster): %s", strerror(errno));
693 /* unlink pty from session */
699 mm_start_pam(Authctxt *authctxt)
703 debug3("%s entering", __func__);
704 if (!options.use_pam)
705 fatal("UsePAM=no, but ended up in %s anyway", __func__);
708 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m);
714 mm_do_pam_account(void)
720 debug3("%s entering", __func__);
721 if (!options.use_pam)
722 fatal("UsePAM=no, but ended up in %s anyway", __func__);
725 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_ACCOUNT, &m);
727 mm_request_receive_expect(pmonitor->m_recvfd,
728 MONITOR_ANS_PAM_ACCOUNT, &m);
729 ret = buffer_get_int(&m);
730 msg = buffer_get_string(&m, NULL);
731 buffer_append(&loginmsg, msg, strlen(msg));
736 debug3("%s returning %d", __func__, ret);
742 mm_sshpam_init_ctx(Authctxt *authctxt)
747 debug3("%s", __func__);
749 buffer_put_cstring(&m, authctxt->user);
750 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m);
751 debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__);
752 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m);
753 success = buffer_get_int(&m);
755 debug3("%s: pam_init_ctx failed", __func__);
764 mm_sshpam_query(void *ctx, char **name, char **info,
765 u_int *num, char ***prompts, u_int **echo_on)
771 debug3("%s", __func__);
773 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_QUERY, &m);
774 debug3("%s: waiting for MONITOR_ANS_PAM_QUERY", __func__);
775 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_QUERY, &m);
776 ret = buffer_get_int(&m);
777 debug3("%s: pam_query returned %d", __func__, ret);
778 *name = buffer_get_string(&m, NULL);
779 *info = buffer_get_string(&m, NULL);
780 *num = buffer_get_int(&m);
781 *prompts = xmalloc((*num + 1) * sizeof(char *));
782 *echo_on = xmalloc((*num + 1) * sizeof(u_int));
783 for (i = 0; i < *num; ++i) {
784 (*prompts)[i] = buffer_get_string(&m, NULL);
785 (*echo_on)[i] = buffer_get_int(&m);
792 mm_sshpam_respond(void *ctx, u_int num, char **resp)
798 debug3("%s", __func__);
800 buffer_put_int(&m, num);
801 for (i = 0; i < num; ++i)
802 buffer_put_cstring(&m, resp[i]);
803 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_RESPOND, &m);
804 debug3("%s: waiting for MONITOR_ANS_PAM_RESPOND", __func__);
805 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_RESPOND, &m);
806 ret = buffer_get_int(&m);
807 debug3("%s: pam_respond returned %d", __func__, ret);
813 mm_sshpam_free_ctx(void *ctxtp)
817 debug3("%s", __func__);
819 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_FREE_CTX, &m);
820 debug3("%s: waiting for MONITOR_ANS_PAM_FREE_CTX", __func__);
821 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_FREE_CTX, &m);
826 /* Request process termination */
834 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_TERM, &m);
839 mm_ssh1_session_key(BIGNUM *num)
845 buffer_put_bignum2(&m, num);
846 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSKEY, &m);
848 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SESSKEY, &m);
850 rsafail = buffer_get_int(&m);
851 buffer_get_bignum2(&m, num);
859 mm_chall_setup(char **name, char **infotxt, u_int *numprompts,
860 char ***prompts, u_int **echo_on)
863 *infotxt = xstrdup("");
865 *prompts = xmalloc(*numprompts * sizeof(char *));
866 *echo_on = xmalloc(*numprompts * sizeof(u_int));
871 mm_bsdauth_query(void *ctx, char **name, char **infotxt,
872 u_int *numprompts, char ***prompts, u_int **echo_on)
878 debug3("%s: entering", __func__);
881 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHQUERY, &m);
883 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_BSDAUTHQUERY,
885 success = buffer_get_int(&m);
887 debug3("%s: no challenge", __func__);
892 /* Get the challenge, and format the response */
893 challenge = buffer_get_string(&m, NULL);
896 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
897 (*prompts)[0] = challenge;
899 debug3("%s: received challenge: %s", __func__, challenge);
905 mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses)
910 debug3("%s: entering", __func__);
911 if (numresponses != 1)
915 buffer_put_cstring(&m, responses[0]);
916 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHRESPOND, &m);
918 mm_request_receive_expect(pmonitor->m_recvfd,
919 MONITOR_ANS_BSDAUTHRESPOND, &m);
921 authok = buffer_get_int(&m);
924 return ((authok == 0) ? -1 : 0);
929 mm_skey_query(void *ctx, char **name, char **infotxt,
930 u_int *numprompts, char ***prompts, u_int **echo_on)
937 debug3("%s: entering", __func__);
940 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYQUERY, &m);
942 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SKEYQUERY,
944 success = buffer_get_int(&m);
946 debug3("%s: no challenge", __func__);
951 /* Get the challenge, and format the response */
952 challenge = buffer_get_string(&m, NULL);
955 debug3("%s: received challenge: %s", __func__, challenge);
957 mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
959 len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
961 strlcpy(p, challenge, len);
962 strlcat(p, SKEY_PROMPT, len);
970 mm_skey_respond(void *ctx, u_int numresponses, char **responses)
975 debug3("%s: entering", __func__);
976 if (numresponses != 1)
980 buffer_put_cstring(&m, responses[0]);
981 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYRESPOND, &m);
983 mm_request_receive_expect(pmonitor->m_recvfd,
984 MONITOR_ANS_SKEYRESPOND, &m);
986 authok = buffer_get_int(&m);
989 return ((authok == 0) ? -1 : 0);
994 mm_ssh1_session_id(u_char session_id[16])
999 debug3("%s entering", __func__);
1002 for (i = 0; i < 16; i++)
1003 buffer_put_char(&m, session_id[i]);
1005 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSID, &m);
1010 mm_auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
1016 int allowed = 0, have_forced = 0;
1018 debug3("%s entering", __func__);
1021 buffer_put_bignum2(&m, client_n);
1023 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSAKEYALLOWED, &m);
1024 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSAKEYALLOWED, &m);
1026 allowed = buffer_get_int(&m);
1028 /* fake forced command */
1029 auth_clear_options();
1030 have_forced = buffer_get_int(&m);
1031 forced_command = have_forced ? xstrdup("true") : NULL;
1033 if (allowed && rkey != NULL) {
1034 blob = buffer_get_string(&m, &blen);
1035 if ((key = key_from_blob(blob, blen)) == NULL)
1036 fatal("%s: key_from_blob failed", __func__);
1047 mm_auth_rsa_generate_challenge(Key *key)
1054 debug3("%s entering", __func__);
1056 if ((challenge = BN_new()) == NULL)
1057 fatal("%s: BN_new failed", __func__);
1059 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1060 if (key_to_blob(key, &blob, &blen) == 0)
1061 fatal("%s: key_to_blob failed", __func__);
1062 key->type = KEY_RSA1;
1065 buffer_put_string(&m, blob, blen);
1068 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSACHALLENGE, &m);
1069 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSACHALLENGE, &m);
1071 buffer_get_bignum2(&m, challenge);
1078 mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
1085 debug3("%s entering", __func__);
1087 key->type = KEY_RSA; /* XXX cheat for key_to_blob */
1088 if (key_to_blob(key, &blob, &blen) == 0)
1089 fatal("%s: key_to_blob failed", __func__);
1090 key->type = KEY_RSA1;
1093 buffer_put_string(&m, blob, blen);
1094 buffer_put_string(&m, response, 16);
1097 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSARESPONSE, &m);
1098 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSARESPONSE, &m);
1100 success = buffer_get_int(&m);
1106 #ifdef SSH_AUDIT_EVENTS
1108 mm_audit_event(ssh_audit_event_t event)
1112 debug3("%s entering", __func__);
1115 buffer_put_int(&m, event);
1117 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_EVENT, &m);
1122 mm_audit_run_command(const char *command)
1126 debug3("%s entering command %s", __func__, command);
1129 buffer_put_cstring(&m, command);
1131 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_COMMAND, &m);
1134 #endif /* SSH_AUDIT_EVENTS */
1138 mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID goid)
1143 /* Client doesn't get to see the context */
1147 buffer_put_string(&m, goid->elements, goid->length);
1149 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
1150 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
1152 major = buffer_get_int(&m);
1159 mm_ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *in,
1160 gss_buffer_desc *out, OM_uint32 *flags)
1167 buffer_put_string(&m, in->value, in->length);
1169 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
1170 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
1172 major = buffer_get_int(&m);
1173 out->value = buffer_get_string(&m, &len);
1176 *flags = buffer_get_int(&m);
1184 mm_ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
1190 buffer_put_string(&m, gssbuf->value, gssbuf->length);
1191 buffer_put_string(&m, gssmic->value, gssmic->length);
1193 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSCHECKMIC, &m);
1194 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSCHECKMIC,
1197 major = buffer_get_int(&m);
1203 mm_ssh_gssapi_userok(char *user)
1206 int authenticated = 0;
1210 mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, &m);
1211 mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
1214 authenticated = buffer_get_int(&m);
1217 debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
1218 return (authenticated);