X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/05114c7476ac506bb6129dee9df34c771cfce817..HEAD:/monitor_wrap.c

diff --git a/monitor_wrap.c b/monitor_wrap.c
index a83413a5..b8e8710f 100644
--- a/monitor_wrap.c
+++ b/monitor_wrap.c
@@ -1,3 +1,4 @@
+/* $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>
@@ -25,90 +26,123 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: monitor_wrap.c,v 1.26 2003/04/07 08:29:57 markus Exp $");
+
+#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 "buffer.h"
+#include "key.h"
+#include "cipher.h"
 #include "kex.h"
+#include "hostfile.h"
 #include "auth.h"
 #include "auth-options.h"
-#include "buffer.h"
-#include "bufaux.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 "auth.h"
 #include "channels.h"
 #include "session.h"
+#include "servconf.h"
+#include "roaming.h"
 
 /* Imports */
 extern int compat20;
-extern Newkeys *newkeys[];
 extern z_stream incoming_stream;
 extern z_stream outgoing_stream;
 extern struct monitor *pmonitor;
-extern Buffer input, output;
+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_int mlen = buffer_len(m);
 	u_char buf[5];
 
 	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", __func__);
-	if (atomicio(write, socket, buffer_ptr(m), mlen) != mlen)
-		fatal("%s: write", __func__);
+	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];
 	u_int msg_len;
-	ssize_t res;
 
 	debug3("%s entering", __func__);
 
-	res = atomicio(read, socket, buf, sizeof(buf));
-	if (res != sizeof(buf)) {
-		if (res == 0)
-			fatal_cleanup();
-		fatal("%s: read: %ld", __func__, (long)res);
+	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_32BIT(buf);
+	msg_len = get_u32(buf);
 	if (msg_len > 256 * 1024)
 		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: %ld != msg_len", __func__, (long)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", __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", __func__,
@@ -172,16 +206,17 @@ mm_key_sign(Key *key, u_char **sigp, u_int *lenp, u_char *data, u_int datalen)
 }
 
 struct passwd *
-mm_getpwnamallow(const char *login)
+mm_getpwnamallow(const char *username)
 {
 	Buffer m;
 	struct passwd *pw;
-	u_int pwlen;
+	u_int len;
+	ServerOptions *newopts;
 
 	debug3("%s entering", __func__);
 
 	buffer_init(&m);
-	buffer_put_cstring(&m, login);
+	buffer_put_cstring(&m, username);
 
 	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_PWNAM, &m);
 
@@ -189,11 +224,11 @@ mm_getpwnamallow(const char *login)
 	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_PWNAM, &m);
 
 	if (buffer_get_char(&m) == 0) {
-		buffer_free(&m);
-		return (NULL);
+		pw = NULL;
+		goto out;
 	}
-	pw = buffer_get_string(&m, &pwlen);
-	if (pwlen != sizeof(struct passwd))
+	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);
@@ -203,12 +238,24 @@ mm_getpwnamallow(const char *login)
 #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);
 }
 
-char *mm_auth2_read_banner(void)
+char *
+mm_auth2_read_banner(void)
 {
 	Buffer m;
 	char *banner;
@@ -219,10 +266,16 @@ char *mm_auth2_read_banner(void)
 	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);
+	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);
 }
 
@@ -426,8 +479,8 @@ mm_newkeys_from_blob(u_char *blob, int blen)
 
 	/* 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", __func__, 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 = buffer_get_string(&b, &len);
 	if (len > mac->key_len)
@@ -455,7 +508,7 @@ mm_newkeys_to_blob(int mode, u_char **blobp, u_int *lenp)
 	Enc *enc;
 	Mac *mac;
 	Comp *comp;
-	Newkeys *newkey = newkeys[mode];
+	Newkeys *newkey = (Newkeys *)packet_get_newkeys(mode);
 
 	debug3("%s: converting %p", __func__, newkey);
 
@@ -515,13 +568,13 @@ mm_send_kex(Buffer *m, Kex *kex)
 }
 
 void
-mm_send_keystate(struct monitor *pmonitor)
+mm_send_keystate(struct monitor *monitor)
 {
-	Buffer m;
+	Buffer m, *input, *output;
 	u_char *blob, *p;
 	u_int bloblen, plen;
 	u_int32_t seqnr, packets;
-	u_int64_t blocks;
+	u_int64_t blocks, bytes;
 
 	buffer_init(&m);
 
@@ -551,11 +604,12 @@ mm_send_keystate(struct monitor *pmonitor)
 		goto skip;
 	} else {
 		/* Kex for rekeying */
-		mm_send_kex(&m, *pmonitor->m_pkex);
+		mm_send_kex(&m, *monitor->m_pkex);
 	}
 
 	debug3("%s: Sending new keys: %p %p",
-	    __func__, newkeys[MODE_OUT], newkeys[MODE_IN]);
+	    __func__, packet_get_newkeys(MODE_OUT),
+	    packet_get_newkeys(MODE_IN));
 
 	/* Keys from Kex */
 	if (!mm_newkeys_to_blob(MODE_OUT, &blob, &bloblen))
@@ -570,14 +624,16 @@ mm_send_keystate(struct monitor *pmonitor)
 	buffer_put_string(&m, blob, bloblen);
 	xfree(blob);
 
-	packet_get_state(MODE_OUT, &seqnr, &blocks, &packets);
+	packet_get_state(MODE_OUT, &seqnr, &blocks, &packets, &bytes);
 	buffer_put_int(&m, seqnr);
 	buffer_put_int64(&m, blocks);
 	buffer_put_int(&m, packets);
-	packet_get_state(MODE_IN, &seqnr, &blocks, &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:
@@ -600,21 +656,42 @@ mm_send_keystate(struct monitor *pmonitor)
 	buffer_put_string(&m, &incoming_stream, sizeof(incoming_stream));
 
 	/* Network I/O buffers */
-	buffer_put_string(&m, buffer_ptr(&input), buffer_len(&input));
-	buffer_put_string(&m, buffer_ptr(&output), buffer_len(&output));
+	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(pmonitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
+	mm_request_send(monitor->m_recvfd, MONITOR_REQ_KEYEXPORT, &m);
 	debug3("%s: Finished sending state", __func__);
 
 	buffer_free(&m);
 }
 
 int
-mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
+mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, size_t namebuflen)
 {
 	Buffer m;
-	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(pmonitor->m_recvfd, MONITOR_REQ_PTY, &m);
@@ -629,22 +706,26 @@ mm_pty_allocate(int *ptyfd, int *ttyfd, char *namebuf, int namebuflen)
 		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(pmonitor->m_recvfd);
-	*ttyfd = mm_receive_fd(pmonitor->m_recvfd);
+	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(void *session)
+mm_session_pty_cleanup2(Session *s)
 {
-	Session *s = session;
 	Buffer m;
 
 	if (s->ttyfd == -1)
@@ -655,8 +736,9 @@ mm_session_pty_cleanup2(void *session)
 	buffer_free(&m);
 
 	/* closed dup'ed master */
-	if (close(s->ptymaster) < 0)
-		error("close(s->ptymaster): %s", strerror(errno));
+	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;
@@ -664,20 +746,48 @@ mm_session_pty_cleanup2(void *session)
 
 #ifdef USE_PAM
 void
-mm_start_pam(char *user)
+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);
-	buffer_put_cstring(&m, user);
-
 	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)
 {
@@ -705,7 +815,8 @@ mm_sshpam_query(void *ctx, char **name, char **info,
     u_int *num, char ***prompts, u_int **echo_on)
 {
 	Buffer m;
-	int i, ret;
+	u_int i;
+	int ret;
 
 	debug3("%s", __func__);
 	buffer_init(&m);
@@ -717,8 +828,11 @@ mm_sshpam_query(void *ctx, char **name, char **info,
 	*name = buffer_get_string(&m, NULL);
 	*info = buffer_get_string(&m, NULL);
 	*num = buffer_get_int(&m);
-	*prompts = xmalloc((*num + 1) * sizeof(char *));
-	*echo_on = xmalloc((*num + 1) * sizeof(u_int));
+	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);
@@ -731,7 +845,8 @@ int
 mm_sshpam_respond(void *ctx, u_int num, char **resp)
 {
 	Buffer m;
-	int i, ret;
+	u_int i;
+	int ret;
 
 	debug3("%s", __func__);
 	buffer_init(&m);
@@ -800,8 +915,8 @@ mm_chall_setup(char **name, char **infotxt, u_int *numprompts,
 	*name = xstrdup("");
 	*infotxt = xstrdup("");
 	*numprompts = 1;
-	*prompts = xmalloc(*numprompts * sizeof(char *));
-	*echo_on = xmalloc(*numprompts * sizeof(u_int));
+	*prompts = xcalloc(*numprompts, sizeof(char *));
+	*echo_on = xcalloc(*numprompts, sizeof(u_int));
 	(*echo_on)[0] = 0;
 }
 
@@ -862,14 +977,14 @@ mm_bsdauth_respond(void *ctx, u_int numresponses, char **responses)
 	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;
-	int len;
 	u_int success;
-	char *p, *challenge;
+	char *challenge;
 
 	debug3("%s: entering", __func__);
 
@@ -893,11 +1008,7 @@ mm_skey_query(void *ctx, char **name, char **infotxt,
 
 	mm_chall_setup(name, infotxt, numprompts, prompts, echo_on);
 
-	len = strlen(challenge) + strlen(SKEY_PROMPT) + 1;
-	p = xmalloc(len);
-	strlcpy(p, challenge, len);
-	strlcat(p, SKEY_PROMPT, len);
-	(*prompts)[0] = p;
+	xasprintf(*prompts, "%s%s", challenge, SKEY_PROMPT);
 	xfree(challenge);
 
 	return (0);
@@ -925,6 +1036,7 @@ mm_skey_respond(void *ctx, u_int numresponses, char **responses)
 
 	return ((authok == 0) ? -1 : 0);
 }
+#endif /* SKEY */
 
 void
 mm_ssh1_session_id(u_char session_id[16])
@@ -1039,73 +1151,280 @@ mm_auth_rsa_verify_response(Key *key, BIGNUM *p, u_char response[16])
 	return (success);
 }
 
-#ifdef KRB4
-int
-mm_auth_krb4(Authctxt *authctxt, void *_auth, char **client, void *_reply)
+#ifdef SSH_AUDIT_EVENTS
+void
+mm_audit_event(ssh_audit_event_t event)
 {
-	KTEXT auth, reply;
- 	Buffer m;
-	u_int rlen;
-	int success = 0;
-	char *p;
+	Buffer m;
 
 	debug3("%s entering", __func__);
-	auth = _auth;
-	reply = _reply;
 
 	buffer_init(&m);
-	buffer_put_string(&m, auth->dat, auth->length);
+	buffer_put_int(&m, event);
 
-	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB4, &m);
-	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB4, &m);
+	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUDIT_EVENT, &m);
+	buffer_free(&m);
+}
 
-	success = buffer_get_int(&m);
-	if (success) {
-		*client = buffer_get_string(&m, NULL);
-		p = buffer_get_string(&m, &rlen);
-		if (rlen >= MAX_KTXT_LEN)
-			fatal("%s: reply from monitor too large", __func__);
-		reply->length = rlen;
-		memcpy(reply->dat, p, rlen);
-		memset(p, 0, rlen);
-		xfree(p);
-	}
+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);
-	return (success);
 }
-#endif
+#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);
+}
 
-#ifdef KRB5
 int
-mm_auth_krb5(void *ctx, void *argp, char **userp, void *resp)
+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)
 {
-	krb5_data *tkt, *reply;
 	Buffer m;
-	int success;
 
 	debug3("%s entering", __func__);
-	tkt = (krb5_data *) argp;
-	reply = (krb5_data *) resp;
 
 	buffer_init(&m);
-	buffer_put_string(&m, tkt->data, tkt->length);
+	mm_request_send(pmonitor->m_recvfd,
+	    MONITOR_REQ_JPAKE_GET_PWDATA, &m);
 
-	mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_KRB5, &m);
-	mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_KRB5, &m);
+	debug3("%s: waiting for MONITOR_ANS_JPAKE_GET_PWDATA", __func__);
+	mm_request_receive_expect(pmonitor->m_recvfd,
+	    MONITOR_ANS_JPAKE_GET_PWDATA, &m);
 
-	success = buffer_get_int(&m);
-	if (success) {
-		u_int len;
+	*hash_scheme = buffer_get_string(&m, NULL);
+	*salt = buffer_get_string(&m, NULL);
 
-		*userp = buffer_get_string(&m, NULL);
-		reply->data = buffer_get_string(&m, &len);
-		reply->length = len;
-	} else {
-		memset(reply, 0, sizeof(*reply));
-		*userp = 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);
-	return (success);
 }
-#endif
+
+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 */