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upstream: Revert previous two commits 

It turns out we still support pre-auth compression on the client.
Therefore revert the previous two commits:

date: 2018/07/06 09:06:14;  author: sf;  commitid: yZVYKIRtUZWD9CmE;
 Rename COMP_DELAYED to COMP_ZLIB

 Only delayed compression is supported nowadays.

 ok markus@

date: 2018/07/06 09:05:01;  author: sf;  commitid: rEGuT5UgI9f6kddP;
 Remove leftovers from pre-authentication compression

 Support for this has been removed in 2016.
 COMP_DELAYED will be renamed in a later commit.

 ok markus@

OpenBSD-Commit-ID: cdfef526357e4e1483c86cf599491b2dafb77772
This commit is contained in:
sf@openbsd.org 2018-07-09 13:37:10 +00:00 committed by Damien Miller
parent ab39267fa1
commit 168b46f405
6 changed files with 20 additions and 14 deletions
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4
kex.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: kex.c,v 1.140 2018/07/06 09:06:14 sf Exp $ */
/* $OpenBSD: kex.c,v 1.141 2018/07/09 13:37:10 sf Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
*
@ -741,6 +741,8 @@ choose_comp(struct sshcomp *comp, char *client, char *server)
if (name == NULL)
return SSH_ERR_NO_COMPRESS_ALG_MATCH;
if (strcmp(name, "zlib@openssh.com") == 0) {
comp->type = COMP_DELAYED;
} else if (strcmp(name, "zlib") == 0) {
comp->type = COMP_ZLIB;
} else if (strcmp(name, "none") == 0) {
comp->type = COMP_NONE;

3
kex.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: kex.h,v 1.87 2018/07/06 09:06:14 sf Exp $ */
/* $OpenBSD: kex.h,v 1.88 2018/07/09 13:37:10 sf Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
@ -65,6 +65,7 @@
#define COMP_NONE 0
#define COMP_ZLIB 1
#define COMP_DELAYED 2
#define CURVE25519_SIZE 32

4
monitor_wrap.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: monitor_wrap.c,v 1.100 2018/07/06 09:05:01 sf Exp $ */
/* $OpenBSD: monitor_wrap.c,v 1.101 2018/07/09 13:37:10 sf Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* Copyright 2002 Markus Friedl <markus@openbsd.org>
@ -84,6 +84,8 @@
#include "ssherr.h"
/* Imports */
extern z_stream incoming_stream;
extern z_stream outgoing_stream;
extern struct monitor *pmonitor;
extern Buffer loginmsg;
extern ServerOptions options;

11
packet.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: packet.c,v 1.274 2018/07/06 09:06:14 sf Exp $ */
/* $OpenBSD: packet.c,v 1.275 2018/07/09 13:37:10 sf Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -879,8 +879,9 @@ ssh_set_newkeys(struct ssh *ssh, int mode)
/* explicit_bzero(enc->iv, enc->block_size);
explicit_bzero(enc->key, enc->key_len);
explicit_bzero(mac->key, mac->key_len); */
if (comp->type == COMP_ZLIB && state->after_authentication
&& comp->enabled == 0) {
if ((comp->type == COMP_ZLIB ||
(comp->type == COMP_DELAYED &&
state->after_authentication)) && comp->enabled == 0) {
if ((r = ssh_packet_init_compression(ssh)) < 0)
return r;
if (mode == MODE_OUT) {
@ -970,7 +971,7 @@ ssh_packet_enable_delayed_compress(struct ssh *ssh)
/*
* Remember that we are past the authentication step, so rekeying
* with COMP_ZLIB will turn on compression immediately.
* with COMP_DELAYED will turn on compression immediately.
*/
state->after_authentication = 1;
for (mode = 0; mode < MODE_MAX; mode++) {
@ -978,7 +979,7 @@ ssh_packet_enable_delayed_compress(struct ssh *ssh)
if (state->newkeys[mode] == NULL)
continue;
comp = &state->newkeys[mode]->comp;
if (comp && !comp->enabled && comp->type == COMP_ZLIB) {
if (comp && !comp->enabled && comp->type == COMP_DELAYED) {
if ((r = ssh_packet_init_compression(ssh)) != 0)
return r;
if (mode == MODE_OUT) {

8
servconf.c
View File

@ -1,5 +1,5 @@
/* $OpenBSD: servconf.c,v 1.336 2018/07/06 09:06:14 sf Exp $ */
/* $OpenBSD: servconf.c,v 1.337 2018/07/09 13:37:10 sf Exp $ */
/*
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
@ -349,7 +349,7 @@ fill_default_server_options(ServerOptions *options)
options->permit_user_env_whitelist = NULL;
}
if (options->compression == -1)
options->compression = COMP_ZLIB;
options->compression = COMP_DELAYED;
if (options->rekey_limit == -1)
options->rekey_limit = 0;
if (options->rekey_interval == -1)
@ -1170,8 +1170,8 @@ static const struct multistate multistate_permitrootlogin[] = {
{ NULL, -1 }
};
static const struct multistate multistate_compression[] = {
{ "yes", COMP_ZLIB },
{ "delayed", COMP_ZLIB },
{ "yes", COMP_DELAYED },
{ "delayed", COMP_DELAYED },
{ "no", COMP_NONE },
{ NULL, -1 }
};

4
sshconnect2.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshconnect2.c,v 1.276 2018/07/06 09:05:01 sf Exp $ */
/* $OpenBSD: sshconnect2.c,v 1.277 2018/07/09 13:37:10 sf Exp $ */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
* Copyright (c) 2008 Damien Miller. All rights reserved.
@ -174,7 +174,7 @@ ssh_kex2(char *host, struct sockaddr *hostaddr, u_short port)
compat_cipher_proposal(options.ciphers);
myproposal[PROPOSAL_COMP_ALGS_CTOS] =
myproposal[PROPOSAL_COMP_ALGS_STOC] = options.compression ?
"zlib@openssh.com,none" : "none,zlib@openssh.com";
"zlib@openssh.com,zlib,none" : "none,zlib@openssh.com,zlib";
myproposal[PROPOSAL_MAC_ALGS_CTOS] =
myproposal[PROPOSAL_MAC_ALGS_STOC] = options.macs;
if (options.hostkeyalgorithms != NULL) {