X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/91885a4d5370e317c337cdc779bfdd654d921a1a..cc52586e104fe3deb7294703536945a32534fcb9:/monitor_wrap.c

diff --git a/monitor_wrap.c b/monitor_wrap.c
index 798e9353..b8e8710f 100644
--- a/monitor_wrap.c
+++ b/monitor_wrap.c
@@ -1,5 +1,7 @@
+/* $OpenBSD: monitor_wrap.c,v 1.68 2009/06/22 05:39:28 dtucker Exp $ */
 /*
  * Copyright 2002 Niels Provos <provos@citi.umich.edu>
+ * Copyright 2002 Markus Friedl <markus@openbsd.org>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -24,86 +26,131 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD$");
+
+#include <sys/types.h>
+#include <sys/uio.h>
+
+#include <errno.h>
+#include <pwd.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
 
 #include <openssl/bn.h>
 #include <openssl/dh.h>
+#include <openssl/evp.h>
 
+#include "openbsd-compat/sys-queue.h"
+#include "xmalloc.h"
 #include "ssh.h"
 #include "dh.h"
-#include "kex.h"
 #include "buffer.h"
-#include "bufaux.h"
+#include "key.h"
+#include "cipher.h"
+#include "kex.h"
+#include "hostfile.h"
+#include "auth.h"
+#include "auth-options.h"
 #include "packet.h"
 #include "mac.h"
 #include "log.h"
+#ifdef TARGET_OS_MAC    /* XXX Broken krb5 headers on Mac */
+#undef TARGET_OS_MAC
+#include "zlib.h"
+#define TARGET_OS_MAC 1
+#else
 #include "zlib.h"
+#endif
 #include "monitor.h"
+#ifdef GSSAPI
+#include "ssh-gss.h"
+#endif
 #include "monitor_wrap.h"
-#include "xmalloc.h"
 #include "atomicio.h"
 #include "monitor_fdpass.h"
-#include "getput.h"
+#include "misc.h"
+#include "schnorr.h"
+#include "jpake.h"
+
+#include "channels.h"
+#include "session.h"
+#include "servconf.h"
+#include "roaming.h"
 
 /* Imports */
-extern Newkeys *newkeys[];
+extern int compat20;
 extern z_stream incoming_stream;
 extern z_stream outgoing_stream;
+extern struct monitor *pmonitor;
+extern Buffer loginmsg;
+extern ServerOptions options;
+
+int
+mm_is_monitor(void)
+{
+	/*
+	 * m_pid is only set in the privileged part, and
+	 * points to the unprivileged child.
+	 */
+	return (pmonitor && pmonitor->m_pid > 0);
+}
 
 void
-mm_request_send(int socket, enum monitor_reqtype type, Buffer *m)
+mm_request_send(int sock, enum monitor_reqtype type, Buffer *m)
 {
-	u_char buf[5];
 	u_int mlen = buffer_len(m);
+	u_char buf[5];
 
-	debug3("%s entering: type %d", __FUNCTION__, type);
+	debug3("%s entering: type %d", __func__, type);
 
-	PUT_32BIT(buf, mlen + 1);
+	put_u32(buf, mlen + 1);
 	buf[4] = (u_char) type;		/* 1st byte of payload is mesg-type */
-	if (atomicio(write, socket, buf, sizeof(buf)) != sizeof(buf))
-		fatal("%s: write", __FUNCTION__);
-	if (atomicio(write, socket, buffer_ptr(m), mlen) != mlen)
-		fatal("%s: write", __FUNCTION__);
+	if (atomicio(vwrite, sock, buf, sizeof(buf)) != sizeof(buf))
+		fatal("%s: write: %s", __func__, strerror(errno));
+	if (atomicio(vwrite, sock, buffer_ptr(m), mlen) != mlen)
+		fatal("%s: write: %s", __func__, strerror(errno));
 }
 
 void
-mm_request_receive(int socket, Buffer *m)
+mm_request_receive(int sock, Buffer *m)
 {
 	u_char buf[4];
-	ssize_t res;
 	u_int msg_len;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
-	res = atomicio(read, socket, buf, sizeof(buf));
-	if (res != sizeof(buf))
-		fatal("%s: read: %d", __FUNCTION__, res);
-	msg_len = GET_32BIT(buf);
+	if (atomicio(read, sock, buf, sizeof(buf)) != sizeof(buf)) {
+		if (errno == EPIPE)
+			cleanup_exit(255);
+		fatal("%s: read: %s", __func__, strerror(errno));
+	}
+	msg_len = get_u32(buf);
 	if (msg_len > 256 * 1024)
-		fatal("%s: read: bad msg_len %d", __FUNCTION__, msg_len);
+		fatal("%s: read: bad msg_len %d", __func__, msg_len);
 	buffer_clear(m);
 	buffer_append_space(m, msg_len);
-	res = atomicio(read, socket, buffer_ptr(m), msg_len);
-	if (res != msg_len)
-		fatal("%s: read: %d != msg_len", __FUNCTION__, res);
+	if (atomicio(read, sock, buffer_ptr(m), msg_len) != msg_len)
+		fatal("%s: read: %s", __func__, strerror(errno));
 }
 
 void
-mm_request_receive_expect(int socket, enum monitor_reqtype type, Buffer *m)
+mm_request_receive_expect(int sock, enum monitor_reqtype type, Buffer *m)
 {
 	u_char rtype;
 
-	debug3("%s entering: type %d", __FUNCTION__, type);
+	debug3("%s entering: type %d", __func__, type);
 
-	mm_request_receive(socket, m);
+	mm_request_receive(sock, m);
 	rtype = buffer_get_char(m);
 	if (rtype != type)
-		fatal("%s: read: rtype %d != type %d", __FUNCTION__,
+		fatal("%s: read: rtype %d != type %d", __func__,
 		    rtype, type);
 }
 
 DH *
-mm_choose_dh(int socket, int min, int nbits, int max)
+mm_choose_dh(int min, int nbits, int max)
 {
 	BIGNUM *p, *g;
 	int success = 0;
@@ -114,44 +161,44 @@ mm_choose_dh(int socket, int min, int nbits, int max)
 	buffer_put_int(&m, nbits);
 	buffer_put_int(&m, max);
 
-	mm_request_send(socket, MONITOR_REQ_MODULI, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_MODULI, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_MODULI", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_MODULI, &m);
+	debug3("%s: waiting for MONITOR_ANS_MODULI", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_MODULI, &m);
 
 	success = buffer_get_char(&m);
 	if (success == 0)
-		fatal("%s: MONITOR_ANS_MODULI failed", __FUNCTION__);
+		fatal("%s: MONITOR_ANS_MODULI failed", __func__);
 
 	if ((p = BN_new()) == NULL)
-		fatal("%s: BN_new failed", __FUNCTION__);
-	if ((g = BN_new()) == NULL) 
-		fatal("%s: BN_new failed", __FUNCTION__);
+		fatal("%s: BN_new failed", __func__);
+	if ((g = BN_new()) == NULL)
+		fatal("%s: BN_new failed", __func__);
 	buffer_get_bignum2(&m, p);
 	buffer_get_bignum2(&m, g);
 
-	debug3("%s: remaining %d", __FUNCTION__, buffer_len(&m));
+	debug3("%s: remaining %d", __func__, buffer_len(&m));
 	buffer_free(&m);
 
 	return (dh_new_group(g, p));
 }
 
 int
-mm_key_sign(int socket, int keyind, u_char **sigp, u_int *lenp,
-    u_char *data, u_int datalen)
+mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen)
 {
+	Kex *kex = *pmonitor->m_pkex;
 	Buffer m;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
 	buffer_init(&m);
-	buffer_put_int(&m, keyind);
+	buffer_put_int(&m, kex->host_key_index(key));
 	buffer_put_string(&m, data, datalen);
 
-	mm_request_send(socket, MONITOR_REQ_SIGN, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SIGN, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_SIGN", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_SIGN, &m);
+	debug3("%s: waiting for MONITOR_ANS_SIGN", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SIGN, &m);
 	*sigp  = buffer_get_string(&m, lenp);
 	buffer_free(&m);
 
@@ -159,106 +206,169 @@ mm_key_sign(int socket, int keyind, u_char **sigp, u_int *lenp,
 }
 
 struct passwd *
-mm_getpwnamallow(int socket, const char *login, int *allowed)
+mm_getpwnamallow(const char *username)
 {
 	Buffer m;
 	struct passwd *pw;
-	u_int pwlen;
+	u_int len;
+	ServerOptions *newopts;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
 	buffer_init(&m);
-	buffer_put_cstring(&m, login);
+	buffer_put_cstring(&m, username);
 
-	mm_request_send(socket, MONITOR_REQ_PWNAM, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_PWNAM", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_PWNAM, &m);
+	debug3("%s: waiting for MONITOR_ANS_PWNAM", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m);
 
-	*allowed  = buffer_get_char(&m);
-	if (*allowed == 0) {
-		buffer_free(&m);
-		return (NULL);
+	if (buffer_get_char(&m) == 0) {
+		pw = NULL;
+		goto out;
 	}
-	pw = buffer_get_string(&m, &pwlen);
-	if (pwlen != sizeof(struct passwd))
-		fatal("%s: struct passwd size mismatch", __FUNCTION__);
+	pw = buffer_get_string(&m, &len);
+	if (len != sizeof(struct passwd))
+		fatal("%s: struct passwd size mismatch", __func__);
 	pw->pw_name = buffer_get_string(&m, NULL);
 	pw->pw_passwd = buffer_get_string(&m, NULL);
 	pw->pw_gecos = buffer_get_string(&m, NULL);
+#ifdef HAVE_PW_CLASS_IN_PASSWD
 	pw->pw_class = buffer_get_string(&m, NULL);
+#endif
 	pw->pw_dir = buffer_get_string(&m, NULL);
 	pw->pw_shell = buffer_get_string(&m, NULL);
+
+out:
+	/* copy options block as a Match directive may have changed some */
+	newopts = buffer_get_string(&m, &len);
+	if (len != sizeof(*newopts))
+		fatal("%s: option block size mismatch", __func__);
+	if (newopts->banner != NULL)
+		newopts->banner = buffer_get_string(&m, NULL);
+	copy_set_server_options(&options, newopts, 1);
+	xfree(newopts);
+
 	buffer_free(&m);
 
 	return (pw);
 }
 
-void
-pwfree(struct passwd *pw)
+char *
+mm_auth2_read_banner(void)
 {
-	xfree(pw->pw_name);
-	xfree(pw->pw_passwd);
-	xfree(pw->pw_gecos);
-	xfree(pw->pw_class);
-	xfree(pw->pw_dir);
-	xfree(pw->pw_shell);
-	xfree(pw);
+	Buffer m;
+	char *banner;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTH2_READ_BANNER, &m);
+	buffer_clear(&m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_AUTH2_READ_BANNER, &m);
+	banner = buffer_get_string(&m, NULL);
+	buffer_free(&m);
+
+	/* treat empty banner as missing banner */
+	if (strlen(banner) == 0) {
+		xfree(banner);
+		banner = NULL;
+	}
+	return (banner);
 }
 
 /* Inform the privileged process about service and style */
 
 void
-mm_inform_authserv(int socket, char *service, char *style)
+mm_inform_authserv(char *service, char *style)
 {
 	Buffer m;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
 	buffer_init(&m);
 	buffer_put_cstring(&m, service);
 	buffer_put_cstring(&m, style ? style : "");
 
-	mm_request_send(socket, MONITOR_REQ_AUTHSERV, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHSERV, &m);
 
 	buffer_free(&m);
 }
 
 /* Do the password authentication */
 int
-mm_auth_password(int socket, char *password)
+mm_auth_password(Authctxt *authctxt, char *password)
 {
 	Buffer m;
 	int authenticated = 0;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
 	buffer_init(&m);
 	buffer_put_cstring(&m, password);
-	mm_request_send(socket, MONITOR_REQ_AUTHPASSWORD, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHPASSWORD, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_AUTHPASSWORD, &m);
+	debug3("%s: waiting for MONITOR_ANS_AUTHPASSWORD", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_AUTHPASSWORD, &m);
 
 	authenticated = buffer_get_int(&m);
 
 	buffer_free(&m);
 
-	debug3("%s: user %sauthenticated", 
-	    __FUNCTION__, authenticated ? "" : "not ");
+	debug3("%s: user %sauthenticated",
+	    __func__, authenticated ? "" : "not ");
 	return (authenticated);
 }
 
 int
-mm_key_allowed(int socket, enum mm_keytype type, char *user, char *host,
+mm_user_key_allowed(struct passwd *pw, Key *key)
+{
+	return (mm_key_allowed(MM_USERKEY, NULL, NULL, key));
+}
+
+int
+mm_hostbased_key_allowed(struct passwd *pw, char *user, char *host,
     Key *key)
+{
+	return (mm_key_allowed(MM_HOSTKEY, user, host, key));
+}
+
+int
+mm_auth_rhosts_rsa_key_allowed(struct passwd *pw, char *user,
+    char *host, Key *key)
+{
+	int ret;
+
+	key->type = KEY_RSA; /* XXX hack for key_to_blob */
+	ret = mm_key_allowed(MM_RSAHOSTKEY, user, host, key);
+	key->type = KEY_RSA1;
+	return (ret);
+}
+
+static void
+mm_send_debug(Buffer *m)
+{
+	char *msg;
+
+	while (buffer_len(m)) {
+		msg = buffer_get_string(m, NULL);
+		debug3("%s: Sending debug: %s", __func__, msg);
+		packet_send_debug("%s", msg);
+		xfree(msg);
+	}
+}
+
+int
+mm_key_allowed(enum mm_keytype type, char *user, char *host, Key *key)
 {
 	Buffer m;
 	u_char *blob;
 	u_int len;
-	int allowed = 0;
+	int allowed = 0, have_forced = 0;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
 	/* Convert the key to a blob and the pass it over */
 	if (!key_to_blob(key, &blob, &len))
@@ -271,52 +381,56 @@ mm_key_allowed(int socket, enum mm_keytype type, char *user, char *host,
 	buffer_put_string(&m, blob, len);
 	xfree(blob);
 
-	mm_request_send(socket, MONITOR_REQ_KEYALLOWED, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYALLOWED, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_KEYALLOWED, &m);
+	debug3("%s: waiting for MONITOR_ANS_KEYALLOWED", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYALLOWED, &m);
 
 	allowed = buffer_get_int(&m);
 
+	/* fake forced command */
+	auth_clear_options();
+	have_forced = buffer_get_int(&m);
+	forced_command = have_forced ? xstrdup("true") : NULL;
+
+	/* Send potential debug messages */
+	mm_send_debug(&m);
+
 	buffer_free(&m);
 
 	return (allowed);
 }
 
-/* 
+/*
  * This key verify needs to send the key type along, because the
  * privileged parent makes the decision if the key is allowed
  * for authentication.
  */
 
 int
-mm_key_verify(int socket, enum mm_keytype type, char *user, char *host,
-    Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
+mm_key_verify(Key *key, u_char *sig, u_int siglen, u_char *data, u_int datalen)
 {
 	Buffer m;
 	u_char *blob;
 	u_int len;
 	int verified = 0;
 
-	debug3("%s entering", __FUNCTION__);
+	debug3("%s entering", __func__);
 
 	/* Convert the key to a blob and the pass it over */
 	if (!key_to_blob(key, &blob, &len))
 		return (0);
 
 	buffer_init(&m);
-	buffer_put_int(&m, type);
-	buffer_put_cstring(&m, user ? user : "");
-	buffer_put_cstring(&m, host ? host : "");
 	buffer_put_string(&m, blob, len);
 	buffer_put_string(&m, sig, siglen);
 	buffer_put_string(&m, data, datalen);
 	xfree(blob);
 
-	mm_request_send(socket, MONITOR_REQ_KEYVERIFY, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KEYVERIFY, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_KEYVERIFY, &m);
+	debug3("%s: waiting for MONITOR_ANS_KEYVERIFY", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KEYVERIFY, &m);
 
 	verified = buffer_get_int(&m);
 
@@ -330,13 +444,13 @@ Newkeys *
 mm_newkeys_from_blob(u_char *blob, int blen)
 {
 	Buffer b;
-	int rlen;
+	u_int len;
 	Newkeys *newkey = NULL;
 	Enc *enc;
 	Mac *mac;
 	Comp *comp;
 
-	debug3("%s: %p(%d)", __FUNCTION__, blob, blen);
+	debug3("%s: %p(%d)", __func__, blob, blen);
 #ifdef DEBUG_PK
 	dump_base64(stderr, blob, blen);
 #endif
@@ -352,33 +466,36 @@ mm_newkeys_from_blob(u_char *blob, int blen)
 	enc->name = buffer_get_string(&b, NULL);
 	buffer_get(&b, &enc->cipher, sizeof(enc->cipher));
 	enc->enabled = buffer_get_int(&b);
-	enc->key_len = buffer_get_int(&b);
 	enc->block_size = buffer_get_int(&b);
-	enc->key = xmalloc(enc->key_len);
-	buffer_get(&b, enc->key, enc->key_len);
-	enc->iv = xmalloc(enc->block_size);
-	buffer_get(&b, enc->iv, enc->block_size);
+	enc->key = buffer_get_string(&b, &enc->key_len);
+	enc->iv = buffer_get_string(&b, &len);
+	if (len != enc->block_size)
+		fatal("%s: bad ivlen: expected %u != %u", __func__,
+		    enc->block_size, len);
 
 	if (enc->name == NULL || cipher_by_name(enc->name) != enc->cipher)
-		fatal("%s: bad cipher name %s or pointer %p", __FUNCTION__,
+		fatal("%s: bad cipher name %s or pointer %p", __func__,
 		    enc->name, enc->cipher);
 
 	/* Mac structure */
 	mac->name = buffer_get_string(&b, NULL);
-	if (mac->name == NULL || mac_init(mac, mac->name) == -1)
-		fatal("%s: can not init mac %s", __FUNCTION__, mac->name);
+	if (mac->name == NULL || mac_setup(mac, mac->name) == -1)
+		fatal("%s: can not setup mac %s", __func__, mac->name);
 	mac->enabled = buffer_get_int(&b);
-	mac->key = xmalloc(mac->key_len);
-	buffer_get(&b, mac->key, mac->key_len);
+	mac->key = buffer_get_string(&b, &len);
+	if (len > mac->key_len)
+		fatal("%s: bad mac key length: %u > %d", __func__, len,
+		    mac->key_len);
+	mac->key_len = len;
 
 	/* Comp structure */
 	comp->type = buffer_get_int(&b);
 	comp->enabled = buffer_get_int(&b);
 	comp->name = buffer_get_string(&b, NULL);
 
-	rlen = buffer_len(&b);
-	if (rlen != 0)
-		error("newkeys_from_blob: remaining bytes in blob %d", rlen);
+	len = buffer_len(&b);
+	if (len != 0)
+		error("newkeys_from_blob: remaining bytes in blob %u", len);
 	buffer_free(&b);
 	return (newkey);
 }
@@ -388,16 +505,15 @@ mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
 {
 	Buffer b;
 	int len;
-	u_char *buf;
 	Enc *enc;
 	Mac *mac;
 	Comp *comp;
-	Newkeys *newkey = newkeys[mode];
+	Newkeys *newkey = (Newkeys *)packet_get_newkeys(mode);
 
-	debug3("%s: converting %p", __FUNCTION__, newkey);
+	debug3("%s: converting %p", __func__, newkey);
 
 	if (newkey == NULL) {
-		error("%s: newkey == NULL", __FUNCTION__);
+		error("%s: newkey == NULL", __func__);
 		return 0;
 	}
 	enc = &newkey->enc;
@@ -410,16 +526,15 @@ mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
 	/* The cipher struct is constant and shared, you export pointer */
 	buffer_append(&b, &enc->cipher, sizeof(enc->cipher));
 	buffer_put_int(&b, enc->enabled);
-	buffer_put_int(&b, enc->key_len);
 	buffer_put_int(&b, enc->block_size);
-	buffer_append(&b, enc->key, enc->key_len);
+	buffer_put_string(&b, enc->key, enc->key_len);
 	packet_get_keyiv(mode, enc->iv, enc->block_size);
-	buffer_append(&b, enc->iv, enc->block_size);
+	buffer_put_string(&b, enc->iv, enc->block_size);
 
 	/* Mac structure */
 	buffer_put_cstring(&b, mac->name);
 	buffer_put_int(&b, mac->enabled);
-	buffer_append(&b, mac->key, mac->key_len);
+	buffer_put_string(&b, mac->key, mac->key_len);
 
 	/* Comp structure */
 	buffer_put_int(&b, comp->type);
@@ -427,47 +542,101 @@ mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
 	buffer_put_cstring(&b, comp->name);
 
 	len = buffer_len(&b);
-	buf = xmalloc(len);
-	memcpy(buf, buffer_ptr(&b), len);
-	memset(buffer_ptr(&b), 0, len);
-	buffer_free(&b);
 	if (lenp != NULL)
 		*lenp = len;
-	if (blobp != NULL)
-		*blobp = buf;
+	if (blobp != NULL) {
+		*blobp = xmalloc(len);
+		memcpy(*blobp, buffer_ptr(&b), len);
+	}
+	memset(buffer_ptr(&b), 0, len);
+	buffer_free(&b);
 	return len;
 }
 
+static void
+mm_send_kex(Buffer *m, Kex *kex)
+{
+	buffer_put_string(m, kex->session_id, kex->session_id_len);
+	buffer_put_int(m, kex->we_need);
+	buffer_put_int(m, kex->hostkey_type);
+	buffer_put_int(m, kex->kex_type);
+	buffer_put_string(m, buffer_ptr(&kex->my), buffer_len(&kex->my));
+	buffer_put_string(m, buffer_ptr(&kex->peer), buffer_len(&kex->peer));
+	buffer_put_int(m, kex->flags);
+	buffer_put_cstring(m, kex->client_version_string);
+	buffer_put_cstring(m, kex->server_version_string);
+}
+
 void
-mm_send_keystate(int socket)
+mm_send_keystate(struct monitor *monitor)
 {
-	Buffer m;
+	Buffer m, *input, *output;
 	u_char *blob, *p;
 	u_int bloblen, plen;
-
-	debug3("%s: Sending new keys: %p %p",
-	    __FUNCTION__, newkeys[MODE_OUT], newkeys[MODE_IN]);
+	u_int32_t seqnr, packets;
+	u_int64_t blocks, bytes;
 
 	buffer_init(&m);
 
+	if (!compat20) {
+		u_char iv[24];
+		u_char *key;
+		u_int ivlen, keylen;
+
+		buffer_put_int(&m, packet_get_protocol_flags());
+
+		buffer_put_int(&m, packet_get_ssh1_cipher());
+
+		debug3("%s: Sending ssh1 KEY+IV", __func__);
+		keylen = packet_get_encryption_key(NULL);
+		key = xmalloc(keylen+1);	/* add 1 if keylen == 0 */
+		keylen = packet_get_encryption_key(key);
+		buffer_put_string(&m, key, keylen);
+		memset(key, 0, keylen);
+		xfree(key);
+
+		ivlen = packet_get_keyiv_len(MODE_OUT);
+		packet_get_keyiv(MODE_OUT, iv, ivlen);
+		buffer_put_string(&m, iv, ivlen);
+		ivlen = packet_get_keyiv_len(MODE_OUT);
+		packet_get_keyiv(MODE_IN, iv, ivlen);
+		buffer_put_string(&m, iv, ivlen);
+		goto skip;
+	} else {
+		/* Kex for rekeying */
+		mm_send_kex(&m, *monitor->m_pkex);
+	}
+
+	debug3("%s: Sending new keys: %p %p",
+	    __func__, packet_get_newkeys(MODE_OUT),
+	    packet_get_newkeys(MODE_IN));
+
 	/* Keys from Kex */
 	if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen))
-		fatal("%s: conversion of newkeys failed", __FUNCTION__);
+		fatal("%s: conversion of newkeys failed", __func__);
 
 	buffer_put_string(&m, blob, bloblen);
 	xfree(blob);
 
 	if (!mm_newkeys_to_blob(MODE_IN, &blob, &bloblen))
-		fatal("%s: conversion of newkeys failed", __FUNCTION__);
+		fatal("%s: conversion of newkeys failed", __func__);
 
 	buffer_put_string(&m, blob, bloblen);
 	xfree(blob);
 
-	buffer_put_int(&m, packet_get_seqnr(MODE_OUT));
-	buffer_put_int(&m, packet_get_seqnr(MODE_IN));
-
-	debug3("%s: New keys have been sent", __FUNCTION__);
-
+	packet_get_state(MODE_OUT, &seqnr, &blocks, &packets, &bytes);
+	buffer_put_int(&m, seqnr);
+	buffer_put_int64(&m, blocks);
+	buffer_put_int(&m, packets);
+	buffer_put_int64(&m, bytes);
+	packet_get_state(MODE_IN, &seqnr, &blocks, &packets, &bytes);
+	buffer_put_int(&m, seqnr);
+	buffer_put_int64(&m, blocks);
+	buffer_put_int(&m, packets);
+	buffer_put_int64(&m, bytes);
+
+	debug3("%s: New keys have been sent", __func__);
+ skip:
 	/* More key context */
 	plen = packet_get_keycontext(MODE_OUT, NULL);
 	p = xmalloc(plen+1);
@@ -482,57 +651,780 @@ mm_send_keystate(int socket)
 	xfree(p);
 
 	/* Compression state */
-	debug3("%s: Sending compression state", __FUNCTION__);
+	debug3("%s: Sending compression state", __func__);
 	buffer_put_string(&m, &outgoing_stream, sizeof(outgoing_stream));
 	buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream));
 
-	mm_request_send(socket, MONITOR_REQ_KEYEXPORT, &m);
-	debug3("%s: Finished sending state", __FUNCTION__);
+	/* Network I/O buffers */
+	input = (Buffer *)packet_get_input();
+	output = (Buffer *)packet_get_output();
+	buffer_put_string(&m, buffer_ptr(input), buffer_len(input));
+	buffer_put_string(&m, buffer_ptr(output), buffer_len(output));
+
+	/* Roaming */
+	if (compat20) {
+		buffer_put_int64(&m, get_sent_bytes());
+		buffer_put_int64(&m, get_recv_bytes());
+	}
+
+	mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
+	debug3("%s: Finished sending state", __func__);
 
 	buffer_free(&m);
 }
 
 int
-mm_pty_allocown(int socket, int *ptyfd, int *ttyfd,
-    char *namebuf, int namebuflen)
+mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, size_t namebuflen)
 {
 	Buffer m;
-	u_char *p;
-	int success = 0;
+	char *p, *msg;
+	int success = 0, tmp1 = -1, tmp2 = -1;
+
+	/* Kludge: ensure there are fds free to receive the pty/tty */
+	if ((tmp1 = dup(pmonitor->m_recvfd)) == -1 ||
+	    (tmp2 = dup(pmonitor->m_recvfd)) == -1) {
+		error("%s: cannot allocate fds for pty", __func__);
+		if (tmp1 > 0)
+			close(tmp1);
+		if (tmp2 > 0)
+			close(tmp2);
+		return 0;
+	}
+	close(tmp1);
+	close(tmp2);
 
 	buffer_init(&m);
-	mm_request_send(socket, MONITOR_REQ_PTY, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m);
 
-	debug3("%s: waiting for MONITOR_ANS_PTY", __FUNCTION__);
-	mm_request_receive_expect(socket, MONITOR_ANS_PTY, &m);
+	debug3("%s: waiting for MONITOR_ANS_PTY", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PTY, &m);
 
 	success = buffer_get_int(&m);
 	if (success == 0) {
-		debug3("%s: pty alloc failed", __FUNCTION__);
+		debug3("%s: pty alloc failed", __func__);
 		buffer_free(&m);
 		return (0);
 	}
 	p = buffer_get_string(&m, NULL);
+	msg = buffer_get_string(&m, NULL);
 	buffer_free(&m);
 
 	strlcpy(namebuf, p, namebuflen); /* Possible truncation */
 	xfree(p);
 
-	*ptyfd = mm_receive_fd(socket);
-	*ttyfd = mm_receive_fd(socket);
+	buffer_append(&loginmsg, msg, strlen(msg));
+	xfree(msg);
+
+	if ((*ptyfd = mm_receive_fd(pmonitor->m_recvfd)) == -1 ||
+	    (*ttyfd = mm_receive_fd(pmonitor->m_recvfd)) == -1)
+		fatal("%s: receive fds failed", __func__);
 
 	/* Success */
 	return (1);
 }
 
+void
+mm_session_pty_cleanup2(Session *s)
+{
+	Buffer m;
+
+	if (s->ttyfd == -1)
+		return;
+	buffer_init(&m);
+	buffer_put_cstring(&m, s->tty);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PTYCLEANUP, &m);
+	buffer_free(&m);
+
+	/* closed dup'ed master */
+	if (s->ptymaster != -1 && close(s->ptymaster) < 0)
+		error("close(s->ptymaster/%d): %s",
+		    s->ptymaster, strerror(errno));
+
+	/* unlink pty from session */
+	s->ttyfd = -1;
+}
+
+#ifdef USE_PAM
+void
+mm_start_pam(Authctxt *authctxt)
+{
+	Buffer m;
+
+	debug3("%s entering", __func__);
+	if (!options.use_pam)
+		fatal("UsePAM=no, but ended up in %s anyway", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_START, &m);
+
+	buffer_free(&m);
+}
+
+u_int
+mm_do_pam_account(void)
+{
+	Buffer m;
+	u_int ret;
+	char *msg;
+
+	debug3("%s entering", __func__);
+	if (!options.use_pam)
+		fatal("UsePAM=no, but ended up in %s anyway", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_ACCOUNT, &m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_PAM_ACCOUNT, &m);
+	ret = buffer_get_int(&m);
+	msg = buffer_get_string(&m, NULL);
+	buffer_append(&loginmsg, msg, strlen(msg));
+	xfree(msg);
+
+	buffer_free(&m);
+
+	debug3("%s returning %d", __func__, ret);
+
+	return (ret);
+}
+
+void *
+mm_sshpam_init_ctx(Authctxt *authctxt)
+{
+	Buffer m;
+	int success;
+
+	debug3("%s", __func__);
+	buffer_init(&m);
+	buffer_put_cstring(&m, authctxt->user);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_INIT_CTX, &m);
+	debug3("%s: waiting for MONITOR_ANS_PAM_INIT_CTX", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_INIT_CTX, &m);
+	success = buffer_get_int(&m);
+	if (success == 0) {
+		debug3("%s: pam_init_ctx failed", __func__);
+		buffer_free(&m);
+		return (NULL);
+	}
+	buffer_free(&m);
+	return (authctxt);
+}
+
+int
+mm_sshpam_query(void *ctx, char **name, char **info,
+    u_int *num, char ***prompts, u_int **echo_on)
+{
+	Buffer m;
+	u_int i;
+	int ret;
+
+	debug3("%s", __func__);
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_QUERY, &m);
+	debug3("%s: waiting for MONITOR_ANS_PAM_QUERY", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_QUERY, &m);
+	ret = buffer_get_int(&m);
+	debug3("%s: pam_query returned %d", __func__, ret);
+	*name = buffer_get_string(&m, NULL);
+	*info = buffer_get_string(&m, NULL);
+	*num = buffer_get_int(&m);
+	if (*num > PAM_MAX_NUM_MSG)
+		fatal("%s: recieved %u PAM messages, expected <= %u",
+		    __func__, *num, PAM_MAX_NUM_MSG);
+	*prompts = xcalloc((*num + 1), sizeof(char *));
+	*echo_on = xcalloc((*num + 1), sizeof(u_int));
+	for (i = 0; i < *num; ++i) {
+		(*prompts)[i] = buffer_get_string(&m, NULL);
+		(*echo_on)[i] = buffer_get_int(&m);
+	}
+	buffer_free(&m);
+	return (ret);
+}
+
+int
+mm_sshpam_respond(void *ctx, u_int num, char **resp)
+{
+	Buffer m;
+	u_int i;
+	int ret;
+
+	debug3("%s", __func__);
+	buffer_init(&m);
+	buffer_put_int(&m, num);
+	for (i = 0; i < num; ++i)
+		buffer_put_cstring(&m, resp[i]);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_RESPOND, &m);
+	debug3("%s: waiting for MONITOR_ANS_PAM_RESPOND", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_RESPOND, &m);
+	ret = buffer_get_int(&m);
+	debug3("%s: pam_respond returned %d", __func__, ret);
+	buffer_free(&m);
+	return (ret);
+}
+
+void
+mm_sshpam_free_ctx(void *ctxtp)
+{
+	Buffer m;
+
+	debug3("%s", __func__);
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PAM_FREE_CTX, &m);
+	debug3("%s: waiting for MONITOR_ANS_PAM_FREE_CTX", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PAM_FREE_CTX, &m);
+	buffer_free(&m);
+}
+#endif /* USE_PAM */
+
 /* Request process termination */
 
 void
-mm_terminate(int socket)
+mm_terminate(void)
+{
+	Buffer m;
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_TERM, &m);
+	buffer_free(&m);
+}
+
+int
+mm_ssh1_session_key(BIGNUM *num)
+{
+	int rsafail;
+	Buffer m;
+
+	buffer_init(&m);
+	buffer_put_bignum2(&m, num);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSKEY, &m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SESSKEY, &m);
+
+	rsafail = buffer_get_int(&m);
+	buffer_get_bignum2(&m, num);
+
+	buffer_free(&m);
+
+	return (rsafail);
+}
+
+static void
+mm_chall_setup(char **name, char **infotxt, u_int *numprompts,
+    char ***prompts, u_int **echo_on)
+{
+	*name = xstrdup("");
+	*infotxt = xstrdup("");
+	*numprompts = 1;
+	*prompts = xcalloc(*numprompts, sizeof(char *));
+	*echo_on = xcalloc(*numprompts, sizeof(u_int));
+	(*echo_on)[0] = 0;
+}
+
+int
+mm_bsdauth_query(void *ctx, char **name, char **infotxt,
+   u_int *numprompts, char ***prompts, u_int **echo_on)
+{
+	Buffer m;
+	u_int success;
+	char *challenge;
+
+	debug3("%s: entering", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHQUERY, &m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_BSDAUTHQUERY,
+	    &m);
+	success = buffer_get_int(&m);
+	if (success == 0) {
+		debug3("%s: no challenge", __func__);
+		buffer_free(&m);
+		return (-1);
+	}
+
+	/* Get the challenge, and format the response */
+	challenge  = buffer_get_string(&m, NULL);
+	buffer_free(&m);
+
+	mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
+	(*prompts)[0] = challenge;
+
+	debug3("%s: received challenge: %s", __func__, challenge);
+
+	return (0);
+}
+
+int
+mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses)
 {
 	Buffer m;
+	int authok;
+
+	debug3("%s: entering", __func__);
+	if (numresponses != 1)
+		return (-1);
 
 	buffer_init(&m);
-	mm_request_send(socket, MONITOR_REQ_TERM, &m);
+	buffer_put_cstring(&m, responses[0]);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_BSDAUTHRESPOND, &m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_BSDAUTHRESPOND, &m);
+
+	authok = buffer_get_int(&m);
 	buffer_free(&m);
+
+	return ((authok == 0) ? -1 : 0);
+}
+
+#ifdef SKEY
+int
+mm_skey_query(void *ctx, char **name, char **infotxt,
+   u_int *numprompts, char ***prompts, u_int **echo_on)
+{
+	Buffer m;
+	u_int success;
+	char *challenge;
+
+	debug3("%s: entering", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYQUERY, &m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_SKEYQUERY,
+	    &m);
+	success = buffer_get_int(&m);
+	if (success == 0) {
+		debug3("%s: no challenge", __func__);
+		buffer_free(&m);
+		return (-1);
+	}
+
+	/* Get the challenge, and format the response */
+	challenge  = buffer_get_string(&m, NULL);
+	buffer_free(&m);
+
+	debug3("%s: received challenge: %s", __func__, challenge);
+
+	mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
+
+	xasprintf(*prompts, "%s%s", challenge, SKEY_PROMPT);
+	xfree(challenge);
+
+	return (0);
+}
+
+int
+mm_skey_respond(void *ctx, u_int numresponses, char **responses)
+{
+	Buffer m;
+	int authok;
+
+	debug3("%s: entering", __func__);
+	if (numresponses != 1)
+		return (-1);
+
+	buffer_init(&m);
+	buffer_put_cstring(&m, responses[0]);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SKEYRESPOND, &m);
+
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_SKEYRESPOND, &m);
+
+	authok = buffer_get_int(&m);
+	buffer_free(&m);
+
+	return ((authok == 0) ? -1 : 0);
+}
+#endif /* SKEY */
+
+void
+mm_ssh1_session_id(u_char session_id[16])
+{
+	Buffer m;
+	int i;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	for (i = 0; i < 16; i++)
+		buffer_put_char(&m, session_id[i]);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_SESSID, &m);
+	buffer_free(&m);
+}
+
+int
+mm_auth_rsa_key_allowed(struct passwd *pw, BIGNUM *client_n, Key **rkey)
+{
+	Buffer m;
+	Key *key;
+	u_char *blob;
+	u_int blen;
+	int allowed = 0, have_forced = 0;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	buffer_put_bignum2(&m, client_n);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSAKEYALLOWED, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSAKEYALLOWED, &m);
+
+	allowed = buffer_get_int(&m);
+
+	/* fake forced command */
+	auth_clear_options();
+	have_forced = buffer_get_int(&m);
+	forced_command = have_forced ? xstrdup("true") : NULL;
+
+	if (allowed && rkey != NULL) {
+		blob = buffer_get_string(&m, &blen);
+		if ((key = key_from_blob(blob, blen)) == NULL)
+			fatal("%s: key_from_blob failed", __func__);
+		*rkey = key;
+		xfree(blob);
+	}
+	mm_send_debug(&m);
+	buffer_free(&m);
+
+	return (allowed);
+}
+
+BIGNUM *
+mm_auth_rsa_generate_challenge(Key *key)
+{
+	Buffer m;
+	BIGNUM *challenge;
+	u_char *blob;
+	u_int blen;
+
+	debug3("%s entering", __func__);
+
+	if ((challenge = BN_new()) == NULL)
+		fatal("%s: BN_new failed", __func__);
+
+	key->type = KEY_RSA;    /* XXX cheat for key_to_blob */
+	if (key_to_blob(key, &blob, &blen) == 0)
+		fatal("%s: key_to_blob failed", __func__);
+	key->type = KEY_RSA1;
+
+	buffer_init(&m);
+	buffer_put_string(&m, blob, blen);
+	xfree(blob);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSACHALLENGE, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSACHALLENGE, &m);
+
+	buffer_get_bignum2(&m, challenge);
+	buffer_free(&m);
+
+	return (challenge);
+}
+
+int
+mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
+{
+	Buffer m;
+	u_char *blob;
+	u_int blen;
+	int success = 0;
+
+	debug3("%s entering", __func__);
+
+	key->type = KEY_RSA;    /* XXX cheat for key_to_blob */
+	if (key_to_blob(key, &blob, &blen) == 0)
+		fatal("%s: key_to_blob failed", __func__);
+	key->type = KEY_RSA1;
+
+	buffer_init(&m);
+	buffer_put_string(&m, blob, blen);
+	buffer_put_string(&m, response, 16);
+	xfree(blob);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_RSARESPONSE, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_RSARESPONSE, &m);
+
+	success = buffer_get_int(&m);
+	buffer_free(&m);
+
+	return (success);
+}
+
+#ifdef SSH_AUDIT_EVENTS
+void
+mm_audit_event(ssh_audit_event_t event)
+{
+	Buffer m;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	buffer_put_int(&m, event);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_EVENT, &m);
+	buffer_free(&m);
+}
+
+void
+mm_audit_run_command(const char *command)
+{
+	Buffer m;
+
+	debug3("%s entering command %s", __func__, command);
+
+	buffer_init(&m);
+	buffer_put_cstring(&m, command);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_COMMAND, &m);
+	buffer_free(&m);
+}
+#endif /* SSH_AUDIT_EVENTS */
+
+#ifdef GSSAPI
+OM_uint32
+mm_ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID goid)
+{
+	Buffer m;
+	OM_uint32 major;
+
+	/* Client doesn't get to see the context */
+	*ctx = NULL;
+
+	buffer_init(&m);
+	buffer_put_string(&m, goid->elements, goid->length);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSETUP, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSETUP, &m);
+
+	major = buffer_get_int(&m);
+
+	buffer_free(&m);
+	return (major);
+}
+
+OM_uint32
+mm_ssh_gssapi_accept_ctx(Gssctxt *ctx, gss_buffer_desc *in,
+    gss_buffer_desc *out, OM_uint32 *flags)
+{
+	Buffer m;
+	OM_uint32 major;
+	u_int len;
+
+	buffer_init(&m);
+	buffer_put_string(&m, in->value, in->length);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSTEP, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSTEP, &m);
+
+	major = buffer_get_int(&m);
+	out->value = buffer_get_string(&m, &len);
+	out->length = len;
+	if (flags)
+		*flags = buffer_get_int(&m);
+
+	buffer_free(&m);
+
+	return (major);
+}
+
+OM_uint32
+mm_ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
+{
+	Buffer m;
+	OM_uint32 major;
+
+	buffer_init(&m);
+	buffer_put_string(&m, gssbuf->value, gssbuf->length);
+	buffer_put_string(&m, gssmic->value, gssmic->length);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSCHECKMIC, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSCHECKMIC,
+	    &m);
+
+	major = buffer_get_int(&m);
+	buffer_free(&m);
+	return(major);
+}
+
+int
+mm_ssh_gssapi_userok(char *user)
+{
+	Buffer m;
+	int authenticated = 0;
+
+	buffer_init(&m);
+
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUSEROK, &m);
+	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUSEROK,
+				  &m);
+
+	authenticated = buffer_get_int(&m);
+
+	buffer_free(&m);
+	debug3("%s: user %sauthenticated",__func__, authenticated ? "" : "not ");
+	return (authenticated);
+}
+#endif /* GSSAPI */
+
+#ifdef JPAKE
+void
+mm_auth2_jpake_get_pwdata(Authctxt *authctxt, BIGNUM **s,
+    char **hash_scheme, char **salt)
+{
+	Buffer m;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd,
+	    MONITOR_REQ_JPAKE_GET_PWDATA, &m);
+
+	debug3("%s: waiting for MONITOR_ANS_JPAKE_GET_PWDATA", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_JPAKE_GET_PWDATA, &m);
+
+	*hash_scheme = buffer_get_string(&m, NULL);
+	*salt = buffer_get_string(&m, NULL);
+
+	buffer_free(&m);
+}
+
+void
+mm_jpake_step1(struct modp_group *grp,
+    u_char **id, u_int *id_len,
+    BIGNUM **priv1, BIGNUM **priv2, BIGNUM **g_priv1, BIGNUM **g_priv2,
+    u_char **priv1_proof, u_int *priv1_proof_len,
+    u_char **priv2_proof, u_int *priv2_proof_len)
+{
+	Buffer m;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	mm_request_send(pmonitor->m_recvfd,
+	    MONITOR_REQ_JPAKE_STEP1, &m);
+
+	debug3("%s: waiting for MONITOR_ANS_JPAKE_STEP1", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_JPAKE_STEP1, &m);
+
+	if ((*priv1 = BN_new()) == NULL ||
+	    (*priv2 = BN_new()) == NULL ||
+	    (*g_priv1 = BN_new()) == NULL ||
+	    (*g_priv2 = BN_new()) == NULL)
+		fatal("%s: BN_new", __func__);
+
+	*id = buffer_get_string(&m, id_len);
+	/* priv1 and priv2 are, well, private */
+	buffer_get_bignum2(&m, *g_priv1);
+	buffer_get_bignum2(&m, *g_priv2);
+	*priv1_proof = buffer_get_string(&m, priv1_proof_len);
+	*priv2_proof = buffer_get_string(&m, priv2_proof_len);
+
+	buffer_free(&m);
+}
+
+void
+mm_jpake_step2(struct modp_group *grp, BIGNUM *s,
+    BIGNUM *mypub1, BIGNUM *theirpub1, BIGNUM *theirpub2, BIGNUM *mypriv2,
+    const u_char *theirid, u_int theirid_len,
+    const u_char *myid, u_int myid_len,
+    const u_char *theirpub1_proof, u_int theirpub1_proof_len,
+    const u_char *theirpub2_proof, u_int theirpub2_proof_len,
+    BIGNUM **newpub,
+    u_char **newpub_exponent_proof, u_int *newpub_exponent_proof_len)
+{
+	Buffer m;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	/* monitor already has all bignums except theirpub1, theirpub2 */
+	buffer_put_bignum2(&m, theirpub1);
+	buffer_put_bignum2(&m, theirpub2);
+	/* monitor already knows our id */
+	buffer_put_string(&m, theirid, theirid_len);
+	buffer_put_string(&m, theirpub1_proof, theirpub1_proof_len);
+	buffer_put_string(&m, theirpub2_proof, theirpub2_proof_len);
+
+	mm_request_send(pmonitor->m_recvfd,
+	    MONITOR_REQ_JPAKE_STEP2, &m);
+
+	debug3("%s: waiting for MONITOR_ANS_JPAKE_STEP2", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_JPAKE_STEP2, &m);
+
+	if ((*newpub = BN_new()) == NULL)
+		fatal("%s: BN_new", __func__);
+
+	buffer_get_bignum2(&m, *newpub);
+	*newpub_exponent_proof = buffer_get_string(&m,
+	    newpub_exponent_proof_len);
+
+	buffer_free(&m);
+}
+
+void
+mm_jpake_key_confirm(struct modp_group *grp, BIGNUM *s, BIGNUM *step2_val,
+    BIGNUM *mypriv2, BIGNUM *mypub1, BIGNUM *mypub2,
+    BIGNUM *theirpub1, BIGNUM *theirpub2,
+    const u_char *my_id, u_int my_id_len,
+    const u_char *their_id, u_int their_id_len,
+    const u_char *sess_id, u_int sess_id_len,
+    const u_char *theirpriv2_s_proof, u_int theirpriv2_s_proof_len,
+    BIGNUM **k,
+    u_char **confirm_hash, u_int *confirm_hash_len)
+{
+	Buffer m;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	/* monitor already has all bignums except step2_val */
+	buffer_put_bignum2(&m, step2_val);
+	/* monitor already knows all the ids */
+	buffer_put_string(&m, theirpriv2_s_proof, theirpriv2_s_proof_len);
+
+	mm_request_send(pmonitor->m_recvfd,
+	    MONITOR_REQ_JPAKE_KEY_CONFIRM, &m);
+
+	debug3("%s: waiting for MONITOR_ANS_JPAKE_KEY_CONFIRM", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_JPAKE_KEY_CONFIRM, &m);
+
+	/* 'k' is sensitive and stays in the monitor */
+	*confirm_hash = buffer_get_string(&m, confirm_hash_len);
+
+	buffer_free(&m);
+}
+
+int
+mm_jpake_check_confirm(const BIGNUM *k,
+    const u_char *peer_id, u_int peer_id_len,
+    const u_char *sess_id, u_int sess_id_len,
+    const u_char *peer_confirm_hash, u_int peer_confirm_hash_len)
+{
+	Buffer m;
+	int success = 0;
+
+	debug3("%s entering", __func__);
+
+	buffer_init(&m);
+	/* k is dummy in slave, ignored */
+	/* monitor knows all the ids */
+	buffer_put_string(&m, peer_confirm_hash, peer_confirm_hash_len);
+	mm_request_send(pmonitor->m_recvfd,
+	    MONITOR_REQ_JPAKE_CHECK_CONFIRM, &m);
+
+	debug3("%s: waiting for MONITOR_ANS_JPAKE_CHECK_CONFIRM", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_JPAKE_CHECK_CONFIRM, &m);
+
+	success = buffer_get_int(&m);
+	buffer_free(&m);
+
+	debug3("%s: success = %d", __func__, success);
+	return success;
 }
+#endif /* JPAKE */