[openssh-commits] [openssh] 01/01: upstream: remove global variable used to stash compat flags and use the

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Wed Jan 27 20:52:11 AEDT 2021


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djm pushed a commit to branch master
in repository openssh.

commit 4ca6a1fac328477c642329676d6469dba59019a3
Author: djm at openbsd.org <djm at openbsd.org>
Date:   Wed Jan 27 09:26:53 2021 +0000

    upstream: remove global variable used to stash compat flags and use the
    
    purpose-built ssh->compat variable instead; feedback/ok markus@
    
    OpenBSD-Commit-ID: 7c4f200e112dae6bcf99f5bae1a5629288378a06
---
 channels.c    | 10 +++++-----
 clientloop.c  |  4 ++--
 compat.c      | 36 +++++++++++++++++-------------------
 compat.h      | 12 ++++++------
 kex.c         |  4 ++--
 kexgexc.c     |  4 ++--
 monitor.c     | 10 +++++-----
 nchan.c       |  6 +++---
 ssh-keyscan.c |  7 +++----
 ssh.c         |  4 ++--
 ssh_api.c     |  4 ++--
 sshconnect2.c | 28 ++++++++++++++--------------
 sshd.c        | 10 +++++-----
 ttymodes.c    |  4 ++--
 14 files changed, 70 insertions(+), 73 deletions(-)

diff --git a/channels.c b/channels.c
index cb19a7b0..4fccd0b3 100644
--- a/channels.c
+++ b/channels.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: channels.c,v 1.403 2020/10/18 11:32:01 djm Exp $ */
+/* $OpenBSD: channels.c,v 1.404 2021/01/27 09:26:53 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -2997,7 +2997,7 @@ channel_input_extended_data(int type, u_int32_t seq, struct ssh *ssh)
 		return 0;
 	}
 	if (c->flags & CHAN_EOF_RCVD) {
-		if (datafellows & SSH_BUG_EXTEOF)
+		if (ssh->compat & SSH_BUG_EXTEOF)
 			debug("channel %d: accepting ext data after eof",
 			    c->self);
 		else
@@ -3260,7 +3260,7 @@ channel_fwd_bind_addr(struct ssh *ssh, const char *listen_addr, int *wildcardp,
 		if (fwd_opts->gateway_ports)
 			wildcard = 1;
 	} else if (fwd_opts->gateway_ports || is_client) {
-		if (((datafellows & SSH_OLD_FORWARD_ADDR) &&
+		if (((ssh->compat & SSH_OLD_FORWARD_ADDR) &&
 		    strcmp(listen_addr, "0.0.0.0") == 0 && is_client == 0) ||
 		    *listen_addr == '\0' || strcmp(listen_addr, "*") == 0 ||
 		    (!is_client && fwd_opts->gateway_ports == 1)) {
@@ -3449,7 +3449,7 @@ channel_setup_fwd_listener_tcpip(struct ssh *ssh, int type,
 		c->host_port = fwd->connect_port;
 		c->listening_addr = addr == NULL ? NULL : xstrdup(addr);
 		if (fwd->listen_port == 0 && allocated_listen_port != NULL &&
-		    !(datafellows & SSH_BUG_DYNAMIC_RPORT))
+		    !(ssh->compat & SSH_BUG_DYNAMIC_RPORT))
 			c->listening_port = *allocated_listen_port;
 		else
 			c->listening_port = fwd->listen_port;
@@ -4087,7 +4087,7 @@ channel_update_permission(struct ssh *ssh, int idx, int newport)
 		fwd_perm_clear(&pset->permitted_user[idx]);
 	else {
 		pset->permitted_user[idx].listen_port =
-		    (datafellows & SSH_BUG_DYNAMIC_RPORT) ? 0 : newport;
+		    (ssh->compat & SSH_BUG_DYNAMIC_RPORT) ? 0 : newport;
 	}
 }
 
diff --git a/clientloop.c b/clientloop.c
index 63ba59f0..148e87c9 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.356 2020/12/20 23:36:51 djm Exp $ */
+/* $OpenBSD: clientloop.c,v 1.357 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -1024,7 +1024,7 @@ process_escapes(struct ssh *ssh, Channel *c,
 				continue;
 
 			case 'R':
-				if (datafellows & SSH_BUG_NOREKEY)
+				if (ssh->compat & SSH_BUG_NOREKEY)
 					logit("Server does not "
 					    "support re-keying");
 				else
diff --git a/compat.c b/compat.c
index a9d46e30..69befa96 100644
--- a/compat.c
+++ b/compat.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: compat.c,v 1.116 2020/10/18 11:32:01 djm Exp $ */
+/* $OpenBSD: compat.c,v 1.117 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright (c) 1999, 2000, 2001, 2002 Markus Friedl.  All rights reserved.
  *
@@ -38,11 +38,9 @@
 #include "match.h"
 #include "kex.h"
 
-int datafellows = 0;
-
-/* datafellows bug compatibility */
-u_int
-compat_datafellows(const char *version)
+/* determine bug flags from SSH protocol banner */
+void
+compat_banner(struct ssh *ssh, const char *version)
 {
 	int i;
 	static struct {
@@ -145,22 +143,22 @@ compat_datafellows(const char *version)
 	};
 
 	/* process table, return first match */
+	ssh->compat = 0;
 	for (i = 0; check[i].pat; i++) {
 		if (match_pattern_list(version, check[i].pat, 0) == 1) {
-			debug("match: %s pat %s compat 0x%08x",
+			debug_f("match: %s pat %s compat 0x%08x",
 			    version, check[i].pat, check[i].bugs);
-			datafellows = check[i].bugs;	/* XXX for now */
-			return check[i].bugs;
+			ssh->compat = check[i].bugs;
+			return;
 		}
 	}
-	debug("no match: %s", version);
-	return 0;
+	debug_f("no match: %s", version);
 }
 
 char *
-compat_cipher_proposal(char *cipher_prop)
+compat_cipher_proposal(struct ssh *ssh, char *cipher_prop)
 {
-	if (!(datafellows & SSH_BUG_BIGENDIANAES))
+	if (!(ssh->compat & SSH_BUG_BIGENDIANAES))
 		return cipher_prop;
 	debug2_f("original cipher proposal: %s", cipher_prop);
 	if ((cipher_prop = match_filter_denylist(cipher_prop, "aes*")) == NULL)
@@ -172,9 +170,9 @@ compat_cipher_proposal(char *cipher_prop)
 }
 
 char *
-compat_pkalg_proposal(char *pkalg_prop)
+compat_pkalg_proposal(struct ssh *ssh, char *pkalg_prop)
 {
-	if (!(datafellows & SSH_BUG_RSASIGMD5))
+	if (!(ssh->compat & SSH_BUG_RSASIGMD5))
 		return pkalg_prop;
 	debug2_f("original public key proposal: %s", pkalg_prop);
 	if ((pkalg_prop = match_filter_denylist(pkalg_prop, "ssh-rsa")) == NULL)
@@ -186,16 +184,16 @@ compat_pkalg_proposal(char *pkalg_prop)
 }
 
 char *
-compat_kex_proposal(char *p)
+compat_kex_proposal(struct ssh *ssh, char *p)
 {
-	if ((datafellows & (SSH_BUG_CURVE25519PAD|SSH_OLD_DHGEX)) == 0)
+	if ((ssh->compat & (SSH_BUG_CURVE25519PAD|SSH_OLD_DHGEX)) == 0)
 		return p;
 	debug2_f("original KEX proposal: %s", p);
-	if ((datafellows & SSH_BUG_CURVE25519PAD) != 0)
+	if ((ssh->compat & SSH_BUG_CURVE25519PAD) != 0)
 		if ((p = match_filter_denylist(p,
 		    "curve25519-sha256 at libssh.org")) == NULL)
 			fatal("match_filter_denylist failed");
-	if ((datafellows & SSH_OLD_DHGEX) != 0) {
+	if ((ssh->compat & SSH_OLD_DHGEX) != 0) {
 		if ((p = match_filter_denylist(p,
 		    "diffie-hellman-group-exchange-sha256,"
 		    "diffie-hellman-group-exchange-sha1")) == NULL)
diff --git a/compat.h b/compat.h
index 66db42cc..c197fafc 100644
--- a/compat.h
+++ b/compat.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: compat.h,v 1.55 2020/06/01 07:11:38 dtucker Exp $ */
+/* $OpenBSD: compat.h,v 1.56 2021/01/27 09:26:54 djm Exp $ */
 
 /*
  * Copyright (c) 1999, 2000, 2001 Markus Friedl.  All rights reserved.
@@ -58,10 +58,10 @@
 #define SSH_BUG_HOSTKEYS	0x20000000
 #define SSH_BUG_DHGEX_LARGE	0x40000000
 
-u_int    compat_datafellows(const char *);
-char	*compat_cipher_proposal(char *);
-char	*compat_pkalg_proposal(char *);
-char	*compat_kex_proposal(char *);
+struct ssh;
 
-extern int datafellows;
+void    compat_banner(struct ssh *, const char *);
+char	*compat_cipher_proposal(struct ssh *, char *);
+char	*compat_pkalg_proposal(struct ssh *, char *);
+char	*compat_kex_proposal(struct ssh *, char *);
 #endif
diff --git a/kex.c b/kex.c
index 3269b2c3..c95025ff 100644
--- a/kex.c
+++ b/kex.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kex.c,v 1.163 2020/12/29 00:59:15 djm Exp $ */
+/* $OpenBSD: kex.c,v 1.164 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
  *
@@ -1322,7 +1322,7 @@ kex_exchange_identification(struct ssh *ssh, int timeout_ms,
 	}
 	debug("Remote protocol version %d.%d, remote software version %.100s",
 	    remote_major, remote_minor, remote_version);
-	ssh->compat = compat_datafellows(remote_version);
+	compat_banner(ssh, remote_version);
 
 	mismatch = 0;
 	switch (remote_major) {
diff --git a/kexgexc.c b/kexgexc.c
index 323a659b..c3702c92 100644
--- a/kexgexc.c
+++ b/kexgexc.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kexgexc.c,v 1.35 2019/11/25 00:51:37 djm Exp $ */
+/* $OpenBSD: kexgexc.c,v 1.36 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright (c) 2000 Niels Provos.  All rights reserved.
  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
@@ -68,7 +68,7 @@ kexgex_client(struct ssh *ssh)
 	kex->min = DH_GRP_MIN;
 	kex->max = DH_GRP_MAX;
 	kex->nbits = nbits;
-	if (datafellows & SSH_BUG_DHGEX_LARGE)
+	if (ssh->compat & SSH_BUG_DHGEX_LARGE)
 		kex->nbits = MINIMUM(kex->nbits, 4096);
 	/* New GEX request */
 	if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_DH_GEX_REQUEST)) != 0 ||
diff --git a/monitor.c b/monitor.c
index 6a63aa99..81e29a88 100644
--- a/monitor.c
+++ b/monitor.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: monitor.c,v 1.221 2021/01/26 05:32:21 dtucker Exp $ */
+/* $OpenBSD: monitor.c,v 1.222 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright 2002 Niels Provos <provos at citi.umich.edu>
  * Copyright 2002 Markus Friedl <markus at openbsd.org>
@@ -1175,7 +1175,7 @@ mm_answer_keyallowed(struct ssh *ssh, int sock, struct sshbuf *m)
 	if (key != NULL && authctxt->valid) {
 		/* These should not make it past the privsep child */
 		if (sshkey_type_plain(key->type) == KEY_RSA &&
-		    (datafellows & SSH_BUG_RSASIGMD5) != 0)
+		    (ssh->compat & SSH_BUG_RSASIGMD5) != 0)
 			fatal_f("passed a SSH_BUG_RSASIGMD5 key");
 
 		switch (type) {
@@ -1252,7 +1252,7 @@ mm_answer_keyallowed(struct ssh *ssh, int sock, struct sshbuf *m)
 }
 
 static int
-monitor_valid_userblob(const u_char *data, u_int datalen)
+monitor_valid_userblob(struct ssh *ssh, const u_char *data, u_int datalen)
 {
 	struct sshbuf *b;
 	const u_char *p;
@@ -1264,7 +1264,7 @@ monitor_valid_userblob(const u_char *data, u_int datalen)
 	if ((b = sshbuf_from(data, datalen)) == NULL)
 		fatal_f("sshbuf_from");
 
-	if (datafellows & SSH_OLD_SESSIONID) {
+	if (ssh->compat & SSH_OLD_SESSIONID) {
 		p = sshbuf_ptr(b);
 		len = sshbuf_len(b);
 		if ((session_id2 == NULL) ||
@@ -1418,7 +1418,7 @@ mm_answer_keyverify(struct ssh *ssh, int sock, struct sshbuf *m)
 
 	switch (key_blobtype) {
 	case MM_USERKEY:
-		valid_data = monitor_valid_userblob(data, datalen);
+		valid_data = monitor_valid_userblob(ssh, data, datalen);
 		auth_method = "publickey";
 		break;
 	case MM_HOSTKEY:
diff --git a/nchan.c b/nchan.c
index 76bfc85a..4a4494b8 100644
--- a/nchan.c
+++ b/nchan.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: nchan.c,v 1.71 2020/10/18 11:32:01 djm Exp $ */
+/* $OpenBSD: nchan.c,v 1.72 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright (c) 1999, 2000, 2001, 2002 Markus Friedl.  All rights reserved.
  *
@@ -233,7 +233,7 @@ chan_send_eow2(struct ssh *ssh, Channel *c)
 		    c->self);
 		return;
 	}
-	if (!(datafellows & SSH_NEW_OPENSSH))
+	if (!(ssh->compat & SSH_NEW_OPENSSH))
 		return;
 	if (!c->have_remote_id)
 		fatal_f("channel %d: no remote_id", c->self);
@@ -334,7 +334,7 @@ chan_is_dead(struct ssh *ssh, Channel *c, int do_send)
 	}
 	if (c->istate != CHAN_INPUT_CLOSED || c->ostate != CHAN_OUTPUT_CLOSED)
 		return 0;
-	if ((datafellows & SSH_BUG_EXTEOF) &&
+	if ((ssh->compat & SSH_BUG_EXTEOF) &&
 	    c->extended_usage == CHAN_EXTENDED_WRITE &&
 	    c->efd != -1 &&
 	    sshbuf_len(c->extended) > 0) {
diff --git a/ssh-keyscan.c b/ssh-keyscan.c
index ab71adf9..7abbcbff 100644
--- a/ssh-keyscan.c
+++ b/ssh-keyscan.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keyscan.c,v 1.138 2020/12/29 00:59:15 djm Exp $ */
+/* $OpenBSD: ssh-keyscan.c,v 1.139 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright 1995, 1996 by David Mazieres <dm at lcs.mit.edu>.
  *
@@ -522,11 +522,10 @@ congreet(int s)
 		fatal("ssh_packet_set_connection failed");
 	ssh_packet_set_timeout(c->c_ssh, timeout, 1);
 	ssh_set_app_data(c->c_ssh, c);	/* back link */
+	c->c_ssh->compat = 0;
 	if (sscanf(buf, "SSH-%d.%d-%[^\n]\n",
 	    &remote_major, &remote_minor, remote_version) == 3)
-		c->c_ssh->compat = compat_datafellows(remote_version);
-	else
-		c->c_ssh->compat = 0;
+		compat_banner(c->c_ssh, remote_version);
 	if (!ssh2_capable(remote_major, remote_minor)) {
 		debug("%s doesn't support ssh2", c->c_name);
 		confree(s);
diff --git a/ssh.c b/ssh.c
index dc6bd16d..5b340fa1 100644
--- a/ssh.c
+++ b/ssh.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh.c,v 1.548 2021/01/26 05:32:22 dtucker Exp $ */
+/* $OpenBSD: ssh.c,v 1.549 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -2118,7 +2118,7 @@ ssh_session2(struct ssh *ssh, const struct ssh_conn_info *cinfo)
 
 	/* If we don't expect to open a new session, then disallow it */
 	if (options.control_master == SSHCTL_MASTER_NO &&
-	    (datafellows & SSH_NEW_OPENSSH)) {
+	    (ssh->compat & SSH_NEW_OPENSSH)) {
 		debug("Requesting no-more-sessions at openssh.com");
 		if ((r = sshpkt_start(ssh, SSH2_MSG_GLOBAL_REQUEST)) != 0 ||
 		    (r = sshpkt_put_cstring(ssh,
diff --git a/ssh_api.c b/ssh_api.c
index a65b1fa8..8d65bdae 100644
--- a/ssh_api.c
+++ b/ssh_api.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh_api.c,v 1.24 2020/12/29 00:59:15 djm Exp $ */
+/* $OpenBSD: ssh_api.c,v 1.25 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright (c) 2012 Markus Friedl.  All rights reserved.
  *
@@ -392,7 +392,7 @@ _ssh_read_banner(struct ssh *ssh, struct sshbuf *banner)
 	debug("Remote protocol version %d.%d, remote software version %.100s",
 	    remote_major, remote_minor, remote_version);
 
-	ssh->compat = compat_datafellows(remote_version);
+	compat_banner(ssh, remote_version);
 	if  (remote_major == 1 && remote_minor == 99) {
 		remote_major = 2;
 		remote_minor = 0;
diff --git a/sshconnect2.c b/sshconnect2.c
index 4bbe8d34..efd1def4 100644
--- a/sshconnect2.c
+++ b/sshconnect2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshconnect2.c,v 1.344 2021/01/26 05:32:22 dtucker Exp $ */
+/* $OpenBSD: sshconnect2.c,v 1.345 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  * Copyright (c) 2008 Damien Miller.  All rights reserved.
@@ -246,11 +246,11 @@ ssh_kex2(struct ssh *ssh, char *host, struct sockaddr *hostaddr, u_short port,
 
 	if ((s = kex_names_cat(options.kex_algorithms, "ext-info-c")) == NULL)
 		fatal_f("kex_names_cat");
-	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(s);
+	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(ssh, s);
 	myproposal[PROPOSAL_ENC_ALGS_CTOS] =
-	    compat_cipher_proposal(options.ciphers);
+	    compat_cipher_proposal(ssh, options.ciphers);
 	myproposal[PROPOSAL_ENC_ALGS_STOC] =
-	    compat_cipher_proposal(options.ciphers);
+	    compat_cipher_proposal(ssh, options.ciphers);
 	myproposal[PROPOSAL_COMP_ALGS_CTOS] =
 	    myproposal[PROPOSAL_COMP_ALGS_STOC] =
 	    (char *)compression_alg_list(options.compression);
@@ -259,12 +259,12 @@ ssh_kex2(struct ssh *ssh, char *host, struct sockaddr *hostaddr, u_short port,
 	if (use_known_hosts_order) {
 		/* Query known_hosts and prefer algorithms that appear there */
 		myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] =
-		    compat_pkalg_proposal(
+		    compat_pkalg_proposal(ssh,
 		    order_hostkeyalgs(host, hostaddr, port, cinfo));
 	} else {
 		/* Use specified HostkeyAlgorithms exactly */
 		myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] =
-		    compat_pkalg_proposal(options.hostkeyalgorithms);
+		    compat_pkalg_proposal(ssh, options.hostkeyalgorithms);
 	}
 
 	if (options.rekey_limit || options.rekey_interval)
@@ -294,7 +294,7 @@ ssh_kex2(struct ssh *ssh, char *host, struct sockaddr *hostaddr, u_short port,
 
 	/* remove ext-info from the KEX proposals for rekeying */
 	myproposal[PROPOSAL_KEX_ALGS] =
-	    compat_kex_proposal(options.kex_algorithms);
+	    compat_kex_proposal(ssh, options.kex_algorithms);
 	if ((r = kex_prop2buf(ssh->kex->my, myproposal)) != 0)
 		fatal_r(r, "kex_prop2buf");
 
@@ -1188,7 +1188,7 @@ key_sig_algorithm(struct ssh *ssh, const struct sshkey *key)
 	 */
 	if (ssh == NULL || ssh->kex->server_sig_algs == NULL ||
 	    (key->type != KEY_RSA && key->type != KEY_RSA_CERT) ||
-	    (key->type == KEY_RSA_CERT && (datafellows & SSH_BUG_SIGTYPE))) {
+	    (key->type == KEY_RSA_CERT && (ssh->compat & SSH_BUG_SIGTYPE))) {
 		/* Filter base key signature alg against our configuration */
 		return match_list(sshkey_ssh_name(key),
 		    options.pubkey_accepted_algos, NULL);
@@ -1408,7 +1408,7 @@ sign_and_send_pubkey(struct ssh *ssh, Identity *id)
 		sshbuf_free(b);
 		if ((b = sshbuf_new()) == NULL)
 			fatal_f("sshbuf_new failed");
-		if (datafellows & SSH_OLD_SESSIONID) {
+		if (ssh->compat & SSH_OLD_SESSIONID) {
 			if ((r = sshbuf_put(b, session_id2,
 			    session_id2_len)) != 0)
 				fatal_fr(r, "sshbuf_put");
@@ -1430,7 +1430,7 @@ sign_and_send_pubkey(struct ssh *ssh, Identity *id)
 
 		/* generate signature */
 		r = identity_sign(sign_id, &signature, &slen,
-		    sshbuf_ptr(b), sshbuf_len(b), datafellows, alg);
+		    sshbuf_ptr(b), sshbuf_len(b), ssh->compat, alg);
 		if (r == 0)
 			break;
 		else if (r == SSH_ERR_KEY_NOT_FOUND)
@@ -1808,12 +1808,12 @@ pubkey_reset(Authctxt *authctxt)
 }
 
 static int
-try_identity(Identity *id)
+try_identity(struct ssh *ssh, Identity *id)
 {
 	if (!id->key)
 		return (0);
 	if (sshkey_type_plain(id->key->type) == KEY_RSA &&
-	    (datafellows & SSH_BUG_RSASIGMD5) != 0) {
+	    (ssh->compat & SSH_BUG_RSASIGMD5) != 0) {
 		debug("Skipped %s key %s for RSA/MD5 server",
 		    sshkey_type(id->key), id->filename);
 		return (0);
@@ -1841,7 +1841,7 @@ userauth_pubkey(struct ssh *ssh)
 		 * private key instead
 		 */
 		if (id->key != NULL) {
-			if (try_identity(id)) {
+			if (try_identity(ssh, id)) {
 				ident = format_identity(id);
 				debug("Offering public key: %s", ident);
 				free(ident);
@@ -1851,7 +1851,7 @@ userauth_pubkey(struct ssh *ssh)
 			debug("Trying private key: %s", id->filename);
 			id->key = load_identity_file(id);
 			if (id->key != NULL) {
-				if (try_identity(id)) {
+				if (try_identity(ssh, id)) {
 					id->isprivate = 1;
 					sent = sign_and_send_pubkey(ssh, id);
 				}
diff --git a/sshd.c b/sshd.c
index 1333ef5e..c99a5ac0 100644
--- a/sshd.c
+++ b/sshd.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshd.c,v 1.567 2021/01/09 12:10:02 dtucker Exp $ */
+/* $OpenBSD: sshd.c,v 1.568 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -2352,11 +2352,11 @@ do_ssh2_kex(struct ssh *ssh)
 	struct kex *kex;
 	int r;
 
-	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(
+	myproposal[PROPOSAL_KEX_ALGS] = compat_kex_proposal(ssh,
 	    options.kex_algorithms);
-	myproposal[PROPOSAL_ENC_ALGS_CTOS] = compat_cipher_proposal(
+	myproposal[PROPOSAL_ENC_ALGS_CTOS] = compat_cipher_proposal(ssh,
 	    options.ciphers);
-	myproposal[PROPOSAL_ENC_ALGS_STOC] = compat_cipher_proposal(
+	myproposal[PROPOSAL_ENC_ALGS_STOC] = compat_cipher_proposal(ssh,
 	    options.ciphers);
 	myproposal[PROPOSAL_MAC_ALGS_CTOS] =
 	    myproposal[PROPOSAL_MAC_ALGS_STOC] = options.macs;
@@ -2371,7 +2371,7 @@ do_ssh2_kex(struct ssh *ssh)
 		    options.rekey_interval);
 
 	myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] = compat_pkalg_proposal(
-	    list_hostkey_types());
+	    ssh, list_hostkey_types());
 
 	/* start key exchange */
 	if ((r = kex_setup(ssh, myproposal)) != 0)
diff --git a/ttymodes.c b/ttymodes.c
index 172ab99f..1d20ce80 100644
--- a/ttymodes.c
+++ b/ttymodes.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ttymodes.c,v 1.35 2020/10/18 11:32:02 djm Exp $ */
+/* $OpenBSD: ttymodes.c,v 1.36 2021/01/27 09:26:54 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -316,7 +316,7 @@ ssh_tty_make_modes(struct ssh *ssh, int fd, struct termios *tiop)
 #define SSH_TTYMODE_IUTF8 42  /* for SSH_BUG_UTF8TTYMODE */
 
 #define TTYMODE(NAME, FIELD, OP) \
-	if (OP == SSH_TTYMODE_IUTF8 && (datafellows & SSH_BUG_UTF8TTYMODE)) { \
+	if (OP == SSH_TTYMODE_IUTF8 && (ssh->compat & SSH_BUG_UTF8TTYMODE)) { \
 		debug3_f("SSH_BUG_UTF8TTYMODE"); \
 	} else if ((r = sshbuf_put_u8(buf, OP)) != 0 || \
 	    (r = sshbuf_put_u32(buf, ((tio.FIELD & NAME) != 0))) != 0) \

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