7293 Sun Secure Shell is neither

Reviewed by: Albert Lee <trisk@omniti.com>
Reviewed by: Alex Wilson <alex.wilson@joyent.com>
Reviewed by: Alexander Pyhalov <alp@rsu.ru>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Peter Tribble <peter.tribble@gmail.com>

1 files changed, 0 insertions, 1276 deletions

diff --git a/usr/src/cmd/ssh/libssh/common/readconf.c b/usr/src/cmd/ssh/libssh/common/readconf.c
deleted file mode 100644
index b1e7f89c7a..0000000000
--- a/usr/src/cmd/ssh/libssh/common/readconf.c
+++ /dev/null
@@ -1,1276 +0,0 @@
-/*
- * Author: Tatu Ylonen <ylo@cs.hut.fi>
- * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
- *                    All rights reserved
- * Functions for reading the configuration files.
- *
- * As far as I am concerned, the code I have written for this software
- * can be used freely for any purpose.  Any derived versions of this
- * software must be clearly marked as such, and if the derived work is
- * incompatible with the protocol description in the RFC file, it must be
- * called by a name other than "ssh" or "Secure Shell".
- */
-/*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- * Copyright 2013 Joyent, Inc.  All rights reserved.
- */
-
-#include "includes.h"
-RCSID("$OpenBSD: readconf.c,v 1.100 2002/06/19 00:27:55 deraadt Exp $");
-
-#include "ssh.h"
-#include "xmalloc.h"
-#include "compat.h"
-#include "cipher.h"
-#include "pathnames.h"
-#include "log.h"
-#include "readconf.h"
-#include "match.h"
-#include "misc.h"
-#include "kex.h"
-#include "mac.h"
-
-/* Format of the configuration file:
-
-   # Configuration data is parsed as follows:
-   #  1. command line options
-   #  2. user-specific file
-   #  3. system-wide file
-   # Any configuration value is only changed the first time it is set.
-   # Thus, host-specific definitions should be at the beginning of the
-   # configuration file, and defaults at the end.
-
-   # Host-specific declarations.  These may override anything above.  A single
-   # host may match multiple declarations; these are processed in the order
-   # that they are given in.
-
-   Host *.ngs.fi ngs.fi
-     User foo
-
-   Host fake.com
-     HostName another.host.name.real.org
-     User blaah
-     Port 34289
-     ForwardX11 no
-     ForwardAgent no
-
-   Host books.com
-     RemoteForward 9999 shadows.cs.hut.fi:9999
-     Cipher 3des
-
-   Host fascist.blob.com
-     Port 23123
-     User tylonen
-     RhostsAuthentication no
-     PasswordAuthentication no
-
-   Host puukko.hut.fi
-     User t35124p
-     ProxyCommand ssh-proxy %h %p
-
-   Host *.fr
-     PublicKeyAuthentication no
-
-   Host *.su
-     Cipher none
-     PasswordAuthentication no
-
-   # Defaults for various options
-   Host *
-     ForwardAgent no
-     ForwardX11 no
-     RhostsAuthentication yes
-     PasswordAuthentication yes
-     RSAAuthentication yes
-     RhostsRSAAuthentication yes
-     StrictHostKeyChecking yes
-     KeepAlives no
-     IdentityFile ~/.ssh/identity
-     Port 22
-     EscapeChar ~
-
-*/
-
-/* Keyword tokens. */
-
-typedef enum {
-	oBadOption,
-	oForwardAgent, oForwardX11, oForwardX11Trusted, oGatewayPorts,
-	oRhostsAuthentication,
-	oPasswordAuthentication, oRSAAuthentication,
-	oChallengeResponseAuthentication, oXAuthLocation,
-#if defined(KRB4) || defined(KRB5)
-	oKerberosAuthentication,
-#endif
-#ifdef GSSAPI
-	oGssKeyEx, oGssAuthentication, oGssDelegateCreds,
-#ifdef GSI
-	oGssGlobusDelegateLimitedCreds,
-#endif /* GSI */
-#endif /* GSSAPI */
-#if defined(AFS) || defined(KRB5)
-	oKerberosTgtPassing,
-#endif
-#ifdef AFS
-	oAFSTokenPassing,
-#endif
-	oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
-	oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
-	oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
-	oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
-	oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts,
-	oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs,
-	oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication,
-	oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
-	oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
-	oHostKeyAlgorithms, oBindAddress, oSmartcardDevice,
-	oClearAllForwardings, oNoHostAuthenticationForLocalhost,
-	oFallBackToRsh, oUseRsh, oConnectTimeout, oHashKnownHosts,
-	oServerAliveInterval, oServerAliveCountMax, oDisableBanner,
-	oIgnoreIfUnknown, oRekeyLimit, oUseOpenSSLEngine,
-	oDeprecated
-} OpCodes;
-
-/* Textual representations of the tokens. */
-
-static struct {
-	const char *name;
-	OpCodes opcode;
-} keywords[] = {
-	{ "forwardagent", oForwardAgent },
-	{ "forwardx11", oForwardX11 },
-	{ "forwardx11trusted", oForwardX11Trusted },
-	{ "xauthlocation", oXAuthLocation },
-	{ "gatewayports", oGatewayPorts },
-	{ "useprivilegedport", oUsePrivilegedPort },
-	{ "rhostsauthentication", oRhostsAuthentication },
-	{ "passwordauthentication", oPasswordAuthentication },
-	{ "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
-	{ "kbdinteractivedevices", oKbdInteractiveDevices },
-	{ "rsaauthentication", oRSAAuthentication },
-	{ "pubkeyauthentication", oPubkeyAuthentication },
-	{ "dsaauthentication", oPubkeyAuthentication },		    /* alias */
-	{ "rhostsrsaauthentication", oRhostsRSAAuthentication },
-	{ "hostbasedauthentication", oHostbasedAuthentication },
-	{ "challengeresponseauthentication", oChallengeResponseAuthentication },
-	{ "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
-	{ "tisauthentication", oChallengeResponseAuthentication },  /* alias */
-#if defined(KRB4) || defined(KRB5)
-	{ "kerberosauthentication", oKerberosAuthentication },
-#endif
-#ifdef GSSAPI
-	{ "gssapikeyexchange", oGssKeyEx },
-	{ "gssapiauthentication", oGssAuthentication },
-	{ "gssapidelegatecredentials", oGssDelegateCreds },
-	{ "gsskeyex", oGssKeyEx },				/* alias */
-	{ "gssauthentication", oGssAuthentication },		/* alias */
-	{ "gssdelegatecreds", oGssDelegateCreds },		/* alias */
-#ifdef GSI
-	/* For backwards compatability with old 1.2.27 client code */
-	{ "forwardgssapiglobusproxy", oGssDelegateCreds }, /* alias */
-	{ "forwardgssapiglobuslimitedproxy", oGssGlobusDelegateLimitedCreds },
-#endif /* GSI */
-#endif /* GSSAPI */
-#if defined(AFS) || defined(KRB5)
-	{ "kerberostgtpassing", oKerberosTgtPassing },
-#endif
-#ifdef AFS
-	{ "afstokenpassing", oAFSTokenPassing },
-#endif
-	{ "fallbacktorsh", oFallBackToRsh },
-	{ "usersh", oUseRsh },
-	{ "identityfile", oIdentityFile },
-	{ "identityfile2", oIdentityFile },			/* alias */
-	{ "hostname", oHostName },
-	{ "hostkeyalias", oHostKeyAlias },
-	{ "proxycommand", oProxyCommand },
-	{ "port", oPort },
-	{ "cipher", oCipher },
-	{ "ciphers", oCiphers },
-	{ "macs", oMacs },
-	{ "protocol", oProtocol },
-	{ "remoteforward", oRemoteForward },
-	{ "localforward", oLocalForward },
-	{ "user", oUser },
-	{ "host", oHost },
-	{ "escapechar", oEscapeChar },
-	{ "globalknownhostsfile", oGlobalKnownHostsFile },
-	{ "userknownhostsfile", oUserKnownHostsFile },		/* obsolete */
-	{ "globalknownhostsfile2", oGlobalKnownHostsFile2 },
-	{ "userknownhostsfile2", oUserKnownHostsFile2 },	/* obsolete */
-	{ "connectionattempts", oConnectionAttempts },
-	{ "batchmode", oBatchMode },
-	{ "checkhostip", oCheckHostIP },
-	{ "stricthostkeychecking", oStrictHostKeyChecking },
-	{ "compression", oCompression },
-	{ "compressionlevel", oCompressionLevel },
-	{ "tcpkeepalive", oKeepAlives },
-	{ "keepalive", oKeepAlives },				/* obsolete */
-	{ "numberofpasswordprompts", oNumberOfPasswordPrompts },
-	{ "loglevel", oLogLevel },
-	{ "dynamicforward", oDynamicForward },
-	{ "preferredauthentications", oPreferredAuthentications },
-	{ "hostkeyalgorithms", oHostKeyAlgorithms },
-	{ "bindaddress", oBindAddress },
-	{ "smartcarddevice", oSmartcardDevice },
-	{ "clearallforwardings", oClearAllForwardings },
-	{ "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
-	{ "rekeylimit", oRekeyLimit },
-	{ "connecttimeout", oConnectTimeout },
-	{ "serveraliveinterval", oServerAliveInterval },
-	{ "serveralivecountmax", oServerAliveCountMax },
-	{ "disablebanner", oDisableBanner },
-	{ "hashknownhosts", oHashKnownHosts },
-	{ "ignoreifunknown", oIgnoreIfUnknown },
-	{ "useopensslengine", oUseOpenSSLEngine },
-	{ NULL, oBadOption }
-};
-
-/*
- * Adds a local TCP/IP port forward to options.  Never returns if there is an
- * error.
- */
-
-void
-add_local_forward(Options *options, const Forward *newfwd)
-{
-	Forward *fwd;
-#ifndef NO_IPPORT_RESERVED_CONCEPT
-	extern uid_t original_real_uid;
-	if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0)
-		fatal("Privileged ports can only be forwarded by root.");
-#endif
-	if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
-		fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
-	fwd = &options->local_forwards[options->num_local_forwards++];
-
-	fwd->listen_host = (newfwd->listen_host == NULL) ?
-	    NULL : xstrdup(newfwd->listen_host);
-	fwd->listen_port = newfwd->listen_port;
-	fwd->connect_host = xstrdup(newfwd->connect_host);
-	fwd->connect_port = newfwd->connect_port;
-}
-
-/*
- * Adds a remote TCP/IP port forward to options.  Never returns if there is
- * an error.
- */
-
-void
-add_remote_forward(Options *options, const Forward *newfwd)
-{
-	Forward *fwd;
-	if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
-		fatal("Too many remote forwards (max %d).",
-		    SSH_MAX_FORWARDS_PER_DIRECTION);
-	fwd = &options->remote_forwards[options->num_remote_forwards++];
-
-	fwd->listen_host = (newfwd->listen_host == NULL) ?
-	    NULL : xstrdup(newfwd->listen_host);
-	fwd->listen_port = newfwd->listen_port;
-	fwd->connect_host = xstrdup(newfwd->connect_host);
-	fwd->connect_port = newfwd->connect_port;
-}
-
-static void
-clear_forwardings(Options *options)
-{
-	int i;
-
-	for (i = 0; i < options->num_local_forwards; i++) {
-		if (options->local_forwards[i].listen_host != NULL)
-			xfree(options->local_forwards[i].listen_host);
-		xfree(options->local_forwards[i].connect_host);
-	}
-	options->num_local_forwards = 0;
-	for (i = 0; i < options->num_remote_forwards; i++) {
-		if (options->remote_forwards[i].listen_host != NULL)
-			xfree(options->remote_forwards[i].listen_host);
-		xfree(options->remote_forwards[i].connect_host);
-	}
-	options->num_remote_forwards = 0;
-}
-
-/*
- * Returns the number of the token pointed to by cp or oBadOption.
- */
-
-static OpCodes
-parse_token(const char *cp, const char *filename, int linenum)
-{
-	u_int i;
-
-	for (i = 0; keywords[i].name; i++)
-		if (strcasecmp(cp, keywords[i].name) == 0)
-			return keywords[i].opcode;
-
-	debug("%s: line %d: unknown configuration option: %s",
-	    filename, linenum, cp);
-	return oBadOption;
-}
-
-/*
- * Processes a single option line as used in the configuration files. This
- * only sets those values that have not already been set.
- */
-
-int
-process_config_line(Options *options, const char *host,
-		    char *line, const char *filename, int linenum,
-		    int *activep)
-{
-	char *s, *string, **charptr, *endofnumber, *keyword, *arg, *arg2, fwdarg[256];
-	int opcode, *intptr, value, scale, i;
-	long long orig, val64;
-	StoredOption *so;
-	Forward fwd;
-
-	s = line;
-	/* Get the keyword. (Each line is supposed to begin with a keyword). */
-	keyword = strdelim(&s);
-	/* Ignore leading whitespace. */
-	if (*keyword == '\0')
-		keyword = strdelim(&s);
-	if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
-		return 0;
-
-	opcode = parse_token(keyword, filename, linenum);
-
-	switch (opcode) {
-	case oBadOption:
-		if (options->unknown_opts_num == MAX_UNKNOWN_OPTIONS) {
-			error("we can't have more than %d unknown options:",
-			    MAX_UNKNOWN_OPTIONS);
-			for (i = 0; i < MAX_UNKNOWN_OPTIONS; ++i) {
-				so = &options->unknown_opts[i];
-				error("%s:%d:%s",
-				    so->filename, so->linenum, so->keyword);
-				xfree(so->keyword);
-				xfree(so->filename);
-			}
-			fatal("too many unknown options found, can't continue");
-		}
-
-		/* unknown options will be processed later */
-		so = &options->unknown_opts[options->unknown_opts_num];
-		so->keyword = xstrdup(keyword);
-		so->filename = xstrdup(filename);
-		so->linenum = linenum;
-		options->unknown_opts_num++;
-		return (0);
-
-		/* NOTREACHED */
-	case oConnectTimeout:
-		intptr = &options->connection_timeout;
-parse_time:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%s line %d: missing time value.",
-			    filename, linenum);
-		if ((value = convtime(arg)) == -1)
-			fatal("%s line %d: invalid time value.",
-			    filename, linenum);
-		if (*activep && *intptr == -1)
-			*intptr = value;
-		break;
-
-	case oForwardAgent:
-		intptr = &options->forward_agent;
-parse_flag:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
-		value = 0;	/* To avoid compiler warning... */
-		if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
-			value = 1;
-		else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
-			value = 0;
-		else
-			fatal("%.200s line %d: Bad yes/no argument.", filename, linenum);
-		if (*activep && *intptr == -1)
-			*intptr = value;
-		break;
-
-	case oForwardX11:
-		intptr = &options->forward_x11;
-		goto parse_flag;
-
-	case oForwardX11Trusted:
-		intptr = &options->forward_x11_trusted;
-		goto parse_flag;
-
-	case oGatewayPorts:
-		intptr = &options->gateway_ports;
-		goto parse_flag;
-
-	case oUsePrivilegedPort:
-		intptr = &options->use_privileged_port;
-		goto parse_flag;
-
-	case oRhostsAuthentication:
-		intptr = &options->rhosts_authentication;
-		goto parse_flag;
-
-	case oPasswordAuthentication:
-		intptr = &options->password_authentication;
-		goto parse_flag;
-
-	case oKbdInteractiveAuthentication:
-		intptr = &options->kbd_interactive_authentication;
-		goto parse_flag;
-
-	case oKbdInteractiveDevices:
-		charptr = &options->kbd_interactive_devices;
-		goto parse_string;
-
-	case oPubkeyAuthentication:
-		intptr = &options->pubkey_authentication;
-		goto parse_flag;
-
-	case oRSAAuthentication:
-		intptr = &options->rsa_authentication;
-		goto parse_flag;
-
-	case oRhostsRSAAuthentication:
-		intptr = &options->rhosts_rsa_authentication;
-		goto parse_flag;
-
-	case oHostbasedAuthentication:
-		intptr = &options->hostbased_authentication;
-		goto parse_flag;
-
-	case oChallengeResponseAuthentication:
-		intptr = &options->challenge_response_authentication;
-		goto parse_flag;
-#if defined(KRB4) || defined(KRB5)
-	case oKerberosAuthentication:
-		intptr = &options->kerberos_authentication;
-		goto parse_flag;
-#endif
-#ifdef GSSAPI
-	case oGssKeyEx:
-		intptr = &options->gss_keyex;
-		goto parse_flag;
-      
-	case oGssAuthentication:
-		intptr = &options->gss_authentication;
-		goto parse_flag;
-      
-	case oGssDelegateCreds:
-		intptr = &options->gss_deleg_creds;
-		goto parse_flag;
- 
-#ifdef GSI
-	case oGssGlobusDelegateLimitedCreds:
-		intptr = &options->gss_globus_deleg_limited_proxy;
-		goto parse_flag;
-#endif /* GSI */
-
-#endif /* GSSAPI */
-
-#if defined(AFS) || defined(KRB5)
-	case oKerberosTgtPassing:
-		intptr = &options->kerberos_tgt_passing;
-		goto parse_flag;
-#endif
-#ifdef AFS
-	case oAFSTokenPassing:
-		intptr = &options->afs_token_passing;
-		goto parse_flag;
-#endif
-	case oFallBackToRsh:
-		intptr = &options->fallback_to_rsh;
-		goto parse_flag;
-
-	case oUseRsh:
-		intptr = &options->use_rsh;
-		goto parse_flag;
-
-	case oBatchMode:
-		intptr = &options->batch_mode;
-		goto parse_flag;
-
-	case oCheckHostIP:
-		intptr = &options->check_host_ip;
-		goto parse_flag;
-
-	case oStrictHostKeyChecking:
-		intptr = &options->strict_host_key_checking;
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing yes/no/ask argument.",
-			    filename, linenum);
-		value = 0;	/* To avoid compiler warning... */
-		if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
-			value = 1;
-		else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
-			value = 0;
-		else if (strcmp(arg, "ask") == 0)
-			value = 2;
-		else
-			fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum);
-		if (*activep && *intptr == -1)
-			*intptr = value;
-		break;
-
-	case oCompression:
-		intptr = &options->compression;
-		goto parse_flag;
-
-	case oKeepAlives:
-		intptr = &options->keepalives;
-		goto parse_flag;
-
-	case oNoHostAuthenticationForLocalhost:
-		intptr = &options->no_host_authentication_for_localhost;
-		goto parse_flag;
-
-	case oNumberOfPasswordPrompts:
-		intptr = &options->number_of_password_prompts;
-		goto parse_int;
-
-	case oCompressionLevel:
-		intptr = &options->compression_level;
-		goto parse_int;
-
-	case oRekeyLimit:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (arg[0] < '0' || arg[0] > '9')
-			fatal("%.200s line %d: Bad number.", filename, linenum);
-		orig = val64 = strtoll(arg, &endofnumber, 10);
-		if (arg == endofnumber)
-			fatal("%.200s line %d: Bad number.", filename, linenum);
-		switch (toupper(*endofnumber)) {
-		case '\0':
-			scale = 1;
-			break;
-		case 'K':
-			scale = 1<<10;
-			break;
-		case 'M':
-			scale = 1<<20;
-			break;
-		case 'G':
-			scale = 1<<30;
-			break;
-		default:
-			fatal("%.200s line %d: Invalid RekeyLimit suffix",
-			    filename, linenum);
-		}
-		val64 *= scale;
-		/* detect integer wrap and too-large limits */
-		if ((val64 / scale) != orig || val64 > UINT_MAX)
-			fatal("%.200s line %d: RekeyLimit too large",
-			    filename, linenum);
-		if (val64 < 16)
-			fatal("%.200s line %d: RekeyLimit too small",
-			    filename, linenum);
-		if (*activep && options->rekey_limit == -1)
-			options->rekey_limit = (u_int32_t)val64;
-		break;
-
-	case oIdentityFile:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (*activep) {
-			intptr = &options->num_identity_files;
-			if (*intptr >= SSH_MAX_IDENTITY_FILES)
-				fatal("%.200s line %d: Too many identity files specified (max %d).",
-				    filename, linenum, SSH_MAX_IDENTITY_FILES);
-			charptr =  &options->identity_files[*intptr];
-			*charptr = xstrdup(arg);
-			*intptr = *intptr + 1;
-		}
-		break;
-
-	case oXAuthLocation:
-		charptr=&options->xauth_location;
-		goto parse_string;
-
-	case oUser:
-		charptr = &options->user;
-parse_string:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (*activep && *charptr == NULL)
-			*charptr = xstrdup(arg);
-		break;
-
-	case oGlobalKnownHostsFile:
-		charptr = &options->system_hostfile;
-		goto parse_string;
-
-	case oUserKnownHostsFile:
-		charptr = &options->user_hostfile;
-		goto parse_string;
-
-	case oGlobalKnownHostsFile2:
-		charptr = &options->system_hostfile2;
-		goto parse_string;
-
-	case oUserKnownHostsFile2:
-		charptr = &options->user_hostfile2;
-		goto parse_string;
-
-	case oHostName:
-		charptr = &options->hostname;
-		goto parse_string;
-
-	case oHostKeyAlias:
-		charptr = &options->host_key_alias;
-		goto parse_string;
-
-	case oPreferredAuthentications:
-		charptr = &options->preferred_authentications;
-		goto parse_string;
-
-	case oBindAddress:
-		charptr = &options->bind_address;
-		goto parse_string;
-
-	case oSmartcardDevice:
-		charptr = &options->smartcard_device;
-		goto parse_string;
-
-	case oProxyCommand:
-		charptr = &options->proxy_command;
-		string = xstrdup("");
-		while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
-			string = xrealloc(string, strlen(string) + strlen(arg) + 2);
-			strcat(string, " ");
-			strcat(string, arg);
-		}
-		if (*activep && *charptr == NULL)
-			*charptr = string;
-		else
-			xfree(string);
-		return 0;
-
-	case oPort:
-		intptr = &options->port;
-parse_int:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (arg[0] < '0' || arg[0] > '9')
-			fatal("%.200s line %d: Bad number.", filename, linenum);
-
-		/* Octal, decimal, or hex format? */
-		value = strtol(arg, &endofnumber, 0);
-		if (arg == endofnumber)
-			fatal("%.200s line %d: Bad number.", filename, linenum);
-		if (*activep && *intptr == -1)
-			*intptr = value;
-		break;
-
-	case oConnectionAttempts:
-		intptr = &options->connection_attempts;
-		goto parse_int;
-
-	case oCipher:
-		intptr = &options->cipher;
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		value = cipher_number(arg);
-		if (value == -1)
-			fatal("%.200s line %d: Bad cipher '%s'.",
-			    filename, linenum, arg ? arg : "<NONE>");
-		if (*activep && *intptr == -1)
-			*intptr = value;
-		break;
-
-	case oCiphers:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (!ciphers_valid(arg))
-			fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
-			    filename, linenum, arg ? arg : "<NONE>");
-		if (*activep && options->ciphers == NULL)
-			options->ciphers = xstrdup(arg);
-		break;
-
-	case oMacs:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (!mac_valid(arg))
-			fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
-			    filename, linenum, arg ? arg : "<NONE>");
-		if (*activep && options->macs == NULL)
-			options->macs = xstrdup(arg);
-		break;
-
-	case oHostKeyAlgorithms:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (!key_names_valid2(arg))
-			fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.",
-			    filename, linenum, arg ? arg : "<NONE>");
-		if (*activep && options->hostkeyalgorithms == NULL)
-			options->hostkeyalgorithms = xstrdup(arg);
-		break;
-
-	case oProtocol:
-		intptr = &options->protocol;
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		value = proto_spec(arg);
-		if (value == SSH_PROTO_UNKNOWN)
-			fatal("%.200s line %d: Bad protocol spec '%s'.",
-			    filename, linenum, arg ? arg : "<NONE>");
-		if (*activep && *intptr == SSH_PROTO_UNKNOWN)
-			*intptr = value;
-		break;
-
-	case oLogLevel:
-		intptr = (int *) &options->log_level;
-		arg = strdelim(&s);
-		value = log_level_number(arg);
-		if (value == SYSLOG_LEVEL_NOT_SET)
-			fatal("%.200s line %d: unsupported log level '%s'",
-			    filename, linenum, arg ? arg : "<NONE>");
-		if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET)
-			*intptr = (LogLevel) value;
-		break;
-
-	case oLocalForward:
-	case oRemoteForward:
-		arg = strdelim(&s);
-		if (arg == NULL || *arg == '\0')
-			fatal("%.200s line %d: Missing port argument.",
-			    filename, linenum);
-		arg2 = strdelim(&s);
-		if (arg2 == NULL || *arg2 == '\0')
-			fatal("%.200s line %d: Missing target argument.",
-			    filename, linenum);
-
-		/* construct a string for parse_forward */
-		snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
-
-		if (parse_forward(1, &fwd, fwdarg) == 0)
-			fatal("%.200s line %d: Bad forwarding specification.",
-			    filename, linenum);
-
-		if (*activep) {
-			if (opcode == oLocalForward)
-				add_local_forward(options, &fwd);
-			else if (opcode == oRemoteForward)
-				add_remote_forward(options, &fwd);
-		}
-		break;
-
-	case oDynamicForward:
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing port argument.",
-			    filename, linenum);
-
-		if (parse_forward(0, &fwd, arg) == 0) {
-			fatal("%.200s line %d: Bad dynamic forwarding specification.",
-			    filename, linenum);
-		}
-
-		if (*activep) {
-			fwd.connect_host = "socks";
-			add_local_forward(options, &fwd);
-		}
-		break;
-
-	case oClearAllForwardings:
-		intptr = &options->clear_forwardings;
-		goto parse_flag;
-
-	case oHost:
-		*activep = 0;
-		while ((arg = strdelim(&s)) != NULL && *arg != '\0')
-			if (match_pattern(host, arg)) {
-				debug("Applying options for %.100s", arg);
-				*activep = 1;
-				break;
-			}
-		/* Avoid garbage check below, as strdelim is done. */
-		return 0;
-
-	case oEscapeChar:
-		intptr = &options->escape_char;
-		arg = strdelim(&s);
-		if (!arg || *arg == '\0')
-			fatal("%.200s line %d: Missing argument.", filename, linenum);
-		if (arg[0] == '^' && arg[2] == 0 &&
-		    (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
-			value = (u_char) arg[1] & 31;
-		else if (strlen(arg) == 1)
-			value = (u_char) arg[0];
-		else if (strcmp(arg, "none") == 0)
-			value = SSH_ESCAPECHAR_NONE;
-		else {
-			fatal("%.200s line %d: Bad escape character.",
-			    filename, linenum);
-			/* NOTREACHED */
-			value = 0;	/* Avoid compiler warning. */
-		}
-		if (*activep && *intptr == -1)
-			*intptr = value;
-		break;
-
-	case oServerAliveInterval:
-		intptr = &options->server_alive_interval;
-		goto parse_time;
-
-	case oServerAliveCountMax:
-		intptr = &options->server_alive_count_max;
-		goto parse_int;
-
-	case oHashKnownHosts:
-		intptr = &options->hash_known_hosts;
-		goto parse_flag;
-
-	case oDisableBanner:
-		arg = strdelim(&s);
-		if (get_yes_no_flag(&options->disable_banner, arg, filename,
-		    linenum, *activep) == 1)
-			break;
-
-		if (strcmp(arg, "in-exec-mode") == 0)
-			options->disable_banner = SSH_NO_BANNER_IN_EXEC_MODE;
-		else
-			fatal("%.200s line %d: Bad yes/no/in-exec-mode "
-			    "argument.", filename, linenum);
-		break;
-
-	case oIgnoreIfUnknown:
-		charptr = &options->ignore_if_unknown;
-		goto parse_string;
-
-	case oUseOpenSSLEngine:
-		intptr = &options->use_openssl_engine;
-		goto parse_flag;
-
-	case oDeprecated:
-		debug("%s line %d: Deprecated option \"%s\"",
-		    filename, linenum, keyword);
-		return 0;
-
-	default:
-		fatal("process_config_line: Unimplemented opcode %d", opcode);
-	}
-
-	/* Check that there is no garbage at end of line. */
-	if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
-		fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
-		     filename, linenum, arg);
-	}
-	return 0;
-}
-
-
-/*
- * Reads the config file and modifies the options accordingly.  Options
- * should already be initialized before this call.  This never returns if
- * there is an error.  If the file does not exist, this returns 0.
- */
-
-int
-read_config_file(const char *filename, const char *host, Options *options)
-{
-	FILE *f;
-	char line[1024];
-	int active, linenum;
-
-	/* Open the file. */
-	f = fopen(filename, "r");
-	if (!f)
-		return 0;
-
-	debug("Reading configuration data %.200s", filename);
-
-	/*
-	 * Mark that we are now processing the options.  This flag is turned
-	 * on/off by Host specifications.
-	 */
-	active = 1;
-	linenum = 0;
-	while (fgets(line, sizeof(line), f)) {
-		/* Update line number counter. */
-		linenum++;
-		process_config_line(options, host, line, filename, linenum, &active);
-	}
-	fclose(f);
-	return 1;
-}
-
-/*
- * Initializes options to special values that indicate that they have not yet
- * been set.  Read_config_file will only set options with this value. Options
- * are processed in the following order: command line, user config file,
- * system config file.  Last, fill_default_options is called.
- */
-
-void
-initialize_options(Options * options)
-{
-	memset(options, 'X', sizeof(*options));
-	options->forward_agent = -1;
-	options->forward_x11 = -1;
-	options->forward_x11_trusted = -1;
-	options->xauth_location = NULL;
-	options->gateway_ports = -1;
-	options->use_privileged_port = -1;
-	options->rhosts_authentication = -1;
-	options->rsa_authentication = -1;
-	options->pubkey_authentication = -1;
-	options->challenge_response_authentication = -1;
-#ifdef GSSAPI
-        options->gss_keyex = -1;
-        options->gss_authentication = -1;
-        options->gss_deleg_creds = -1;
-#ifdef GSI
-        options->gss_globus_deleg_limited_proxy = -1;
-#endif /* GSI */
-#endif /* GSSAPI */
-
-#if defined(KRB4) || defined(KRB5)
-	options->kerberos_authentication = -1;
-#endif
-#if defined(AFS) || defined(KRB5)
-	options->kerberos_tgt_passing = -1;
-#endif
-#ifdef AFS
-	options->afs_token_passing = -1;
-#endif
-	options->password_authentication = -1;
-	options->kbd_interactive_authentication = -1;
-	options->kbd_interactive_devices = NULL;
-	options->rhosts_rsa_authentication = -1;
-	options->hostbased_authentication = -1;
-	options->batch_mode = -1;
-	options->check_host_ip = -1;
-	options->strict_host_key_checking = -1;
-	options->compression = -1;
-	options->keepalives = -1;
-	options->compression_level = -1;
-	options->port = -1;
-	options->connection_attempts = -1;
-	options->connection_timeout = -1;
-	options->number_of_password_prompts = -1;
-	options->cipher = -1;
-	options->ciphers = NULL;
-	options->macs = NULL;
-	options->hostkeyalgorithms = NULL;
-	options->protocol = SSH_PROTO_UNKNOWN;
-	options->num_identity_files = 0;
-	options->hostname = NULL;
-	options->host_key_alias = NULL;
-	options->proxy_command = NULL;
-	options->user = NULL;
-	options->escape_char = -1;
-	options->system_hostfile = NULL;
-	options->user_hostfile = NULL;
-	options->system_hostfile2 = NULL;
-	options->user_hostfile2 = NULL;
-	options->num_local_forwards = 0;
-	options->num_remote_forwards = 0;
-	options->clear_forwardings = -1;
-	options->log_level = SYSLOG_LEVEL_NOT_SET;
-	options->preferred_authentications = NULL;
-	options->bind_address = NULL;
-	options->smartcard_device = NULL;
-	options->no_host_authentication_for_localhost = -1;
-	options->rekey_limit = -1;
-	options->fallback_to_rsh = -1;
-	options->use_rsh = -1;
-	options->server_alive_interval = -1;
-	options->server_alive_count_max = -1;
-	options->hash_known_hosts = -1;
-	options->ignore_if_unknown = NULL;
-	options->unknown_opts_num = 0;
-	options->disable_banner = -1;
-	options->use_openssl_engine = -1;
-}
-
-/*
- * Called after processing other sources of option data, this fills those
- * options for which no value has been specified with their default values.
- */
-
-void
-fill_default_options(Options * options)
-{
-	int len;
-
-	if (options->forward_agent == -1)
-		options->forward_agent = 0;
-	if (options->forward_x11 == -1)
-		options->forward_x11 = 0;
-	/*
-	 * Unlike OpenSSH, we keep backward compatibility for '-X' option
-	 * which means that X11 forwarding is trusted by default.
-	 */
-	if (options->forward_x11_trusted == -1)
-		options->forward_x11_trusted = 1;
-	if (options->xauth_location == NULL)
-		options->xauth_location = _PATH_XAUTH;
-	if (options->gateway_ports == -1)
-		options->gateway_ports = 0;
-	if (options->use_privileged_port == -1)
-		options->use_privileged_port = 0;
-	if (options->rhosts_authentication == -1)
-		options->rhosts_authentication = 0;
-	if (options->rsa_authentication == -1)
-		options->rsa_authentication = 1;
-	if (options->pubkey_authentication == -1)
-		options->pubkey_authentication = 1;
-	if (options->challenge_response_authentication == -1)
-		options->challenge_response_authentication = 1;
-#ifdef GSSAPI
-	if (options->gss_keyex == -1)
-		options->gss_keyex = 1;
-	if (options->gss_authentication == -1)
-		options->gss_authentication = 1;
-	if (options->gss_deleg_creds == -1)
-		options->gss_deleg_creds = 0;
-#ifdef GSI
-	if (options->gss_globus_deleg_limited_proxy == -1)
-		options->gss_globus_deleg_limited_proxy = 0;
-#endif /* GSI */
-#endif /* GSSAPI */
-#if defined(KRB4) || defined(KRB5)
-	if (options->kerberos_authentication == -1)
-		options->kerberos_authentication = 1;
-#endif
-#if defined(AFS) || defined(KRB5)
-	if (options->kerberos_tgt_passing == -1)
-		options->kerberos_tgt_passing = 1;
-#endif
-#ifdef AFS
-	if (options->afs_token_passing == -1)
-		options->afs_token_passing = 1;
-#endif
-	if (options->password_authentication == -1)
-		options->password_authentication = 1;
-	if (options->kbd_interactive_authentication == -1)
-		options->kbd_interactive_authentication = 1;
-	if (options->rhosts_rsa_authentication == -1)
-		options->rhosts_rsa_authentication = 0;
-	if (options->hostbased_authentication == -1)
-		options->hostbased_authentication = 0;
-	if (options->batch_mode == -1)
-		options->batch_mode = 0;
-	if (options->check_host_ip == -1)
-		options->check_host_ip = 1;
-	if (options->strict_host_key_checking == -1)
-		options->strict_host_key_checking = 2;	/* 2 is default */
-	if (options->compression == -1)
-		options->compression = 0;
-	if (options->keepalives == -1)
-		options->keepalives = 1;
-	if (options->compression_level == -1)
-		options->compression_level = 6;
-	if (options->port == -1)
-		options->port = 0;	/* Filled in ssh_connect. */
-	if (options->connection_attempts == -1)
-		options->connection_attempts = 1;
-	if (options->number_of_password_prompts == -1)
-		options->number_of_password_prompts = 3;
-	/* Selected in ssh_login(). */
-	if (options->cipher == -1)
-		options->cipher = SSH_CIPHER_NOT_SET;
-	/* options->ciphers, default set in myproposals.h */
-	/* options->macs, default set in myproposals.h */
-	/* options->hostkeyalgorithms, default set in myproposals.h */
-	if (options->protocol == SSH_PROTO_UNKNOWN)
-		options->protocol = SSH_PROTO_1|SSH_PROTO_2;
-	if (options->num_identity_files == 0) {
-		if (options->protocol & SSH_PROTO_1) {
-			len = 2 + strlen(_PATH_SSH_CLIENT_IDENTITY) + 1;
-			options->identity_files[options->num_identity_files] =
-			    xmalloc(len);
-			snprintf(options->identity_files[options->num_identity_files++],
-			    len, "~/%.100s", _PATH_SSH_CLIENT_IDENTITY);
-		}
-		if (options->protocol & SSH_PROTO_2) {
-			len = 2 + strlen(_PATH_SSH_CLIENT_ID_RSA) + 1;
-			options->identity_files[options->num_identity_files] =
-			    xmalloc(len);
-			snprintf(options->identity_files[options->num_identity_files++],
-			    len, "~/%.100s", _PATH_SSH_CLIENT_ID_RSA);
-
-			len = 2 + strlen(_PATH_SSH_CLIENT_ID_DSA) + 1;
-			options->identity_files[options->num_identity_files] =
-			    xmalloc(len);
-			snprintf(options->identity_files[options->num_identity_files++],
-			    len, "~/%.100s", _PATH_SSH_CLIENT_ID_DSA);
-		}
-	}
-	if (options->escape_char == -1)
-		options->escape_char = '~';
-	if (options->system_hostfile == NULL)
-		options->system_hostfile = _PATH_SSH_SYSTEM_HOSTFILE;
-	if (options->user_hostfile == NULL)
-		options->user_hostfile = _PATH_SSH_USER_HOSTFILE;
-	if (options->system_hostfile2 == NULL)
-		options->system_hostfile2 = _PATH_SSH_SYSTEM_HOSTFILE2;
-	if (options->user_hostfile2 == NULL)
-		options->user_hostfile2 = _PATH_SSH_USER_HOSTFILE2;
-	if (options->log_level == SYSLOG_LEVEL_NOT_SET)
-		options->log_level = SYSLOG_LEVEL_INFO;
-	if (options->clear_forwardings == 1)
-		clear_forwardings(options);
-	if (options->no_host_authentication_for_localhost == -1)
-		options->no_host_authentication_for_localhost = 0;
-	if (options->rekey_limit == -1)
-		options->rekey_limit = 0;
-	if (options->fallback_to_rsh == -1)
-		options->fallback_to_rsh = 0;
-	if (options->use_rsh == -1)
-		options->use_rsh = 0;
-	if (options->server_alive_interval == -1)
-		options->server_alive_interval = 0;
-	if (options->server_alive_count_max == -1)
-		options->server_alive_count_max = 3;
-	if (options->hash_known_hosts == -1)
-		options->hash_known_hosts = 0;
-	if (options->disable_banner == -1)
-		options->disable_banner = 0;
-	if (options->use_openssl_engine == -1)
-		options->use_openssl_engine = 1;
-	/* options->proxy_command should not be set by default */
-	/* options->user will be set in the main program if appropriate */
-	/* options->hostname will be set in the main program if appropriate */
-	/* options->host_key_alias should not be set by default */
-	/* options->preferred_authentications will be set in ssh */
-	/* options->ignore_if_unknown should not be set by default */
-}
-
-/*
- * Parses a string containing a port forwarding specification of one of the
- * two forms, short or long:
- *
- *	[listenhost:]listenport
- *	[listenhost:]listenport:connecthost:connectport
- *
- * short forwarding specification is used for dynamic port forwarding and for
- * port forwarding cancelation in process_cmdline(). The function returns number
- * of arguments parsed or zero on any error.
- */
-int
-parse_forward(int long_form, Forward *fwd, const char *fwdspec)
-{
-	int i;
-	char *p, *cp, *fwdarg[5];
-
-	memset(fwd, '\0', sizeof(*fwd));
-
-	cp = p = xstrdup(fwdspec);
-
-	/* skip leading spaces */
-	while (isspace(*cp))
-		cp++;
-
-	for (i = 0; i < 5; ++i)
-		if ((fwdarg[i] = hpdelim(&cp)) == NULL)
-			break;
-
-	if ((long_form == 0 && i > 2) || (long_form == 1 && i < 3) || (i == 5))
-		goto fail_free;
-
-	switch (i) {
-	case 0:
-		goto fail_free;
-
-	case 1:
-		fwd->listen_host = NULL;
-		fwd->listen_port = a2port(fwdarg[0]);
-		break;
-
-	case 2:
-		fwd->listen_host = xstrdup(cleanhostname(fwdarg[0]));
-		fwd->listen_port = a2port(fwdarg[1]);
-		break;
-
-	case 3:
-		fwd->listen_host = NULL;
-		fwd->listen_port = a2port(fwdarg[0]);
-		fwd->connect_host = xstrdup(cleanhostname(fwdarg[1]));
-		fwd->connect_port = a2port(fwdarg[2]);
-		break;
-
-	case 4:
-		fwd->listen_host = xstrdup(cleanhostname(fwdarg[0]));
-		fwd->listen_port = a2port(fwdarg[1]);
-		fwd->connect_host = xstrdup(cleanhostname(fwdarg[2]));
-		fwd->connect_port = a2port(fwdarg[3]);
-		break;
-	}
-
-	if (fwd->listen_port == 0 || (fwd->connect_port == 0 && i > 2))
-		goto fail_free;
-
-	xfree(p);
-	return (i);
-
-fail_free:
-	if (p != NULL)
-		xfree(p);
-	if (fwd->connect_host != NULL)
-		xfree(fwd->connect_host);
-	if (fwd->listen_host != NULL)
-		xfree(fwd->listen_host);
-	return (0);
-}
-
-/*
- * Process previously stored unknown options. When this function is called we
- * already have IgnoreIfUnknown set so finally we can decide whether each
- * unknown option is to be ignored or not.
- */
-void
-process_unknown_options(Options *options)
-{
-	StoredOption *so;
-	int m, i, bad_options = 0;
-
-	/* if there is no unknown option we are done */
-	if (options->unknown_opts_num == 0)
-		return;
-
-	/*
-	 * Now go through the list of unknown options and report any one that
-	 * is not explicitly listed in IgnoreIfUnknown option. If at least one
-	 * such as that is found it's a show stopper.
-	 */
-	for (i = 0; i < options->unknown_opts_num; ++i) {
-		so = &options->unknown_opts[i];
-		if (options->ignore_if_unknown == NULL)
-			m = 0;
-		else
-			m = match_pattern_list(tolowercase(so->keyword),
-			    options->ignore_if_unknown,
-			    strlen(options->ignore_if_unknown), 1);
-		if (m == 1) {
-			debug("%s: line %d: ignoring unknown option: %s",
-			    so->filename, so->linenum, so->keyword);
-		}
-		else {
-			error("%s: line %d: unknown configuration option: %s",
-			    so->filename, so->linenum, so->keyword);
-			bad_options++;
-		}
-		xfree(so->keyword);
-		xfree(so->filename);
-	}
-
-	/* exit if we found at least one unignored unknown option */
-	if (bad_options > 0)
-		fatal("terminating, %d bad configuration option(s)",
-		    bad_options);
-}