2000-02-24 14:29:47 +00:00
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Functions for reading the configuration files.
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2000-05-15 05:24:25 +00:00
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*
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2000-09-10 09:35:38 +00:00
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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2000-02-24 14:29:47 +00:00
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*/
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#include "includes.h"
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2005-06-05 15:46:09 +00:00
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RCSID("$OpenBSD: readconf.c,v 1.139 2005/03/10 22:01:05 deraadt Exp $");
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2002-06-29 10:51:56 +00:00
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RCSID("$FreeBSD$");
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2000-02-24 14:29:47 +00:00
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#include "ssh.h"
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#include "xmalloc.h"
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2000-05-15 05:24:25 +00:00
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#include "compat.h"
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2001-05-04 04:14:23 +00:00
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#include "cipher.h"
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#include "pathnames.h"
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#include "log.h"
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#include "readconf.h"
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#include "match.h"
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#include "misc.h"
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#include "kex.h"
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#include "mac.h"
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2000-02-24 14:29:47 +00:00
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/* Format of the configuration file:
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# Configuration data is parsed as follows:
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# 1. command line options
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# 2. user-specific file
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# 3. system-wide file
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# Any configuration value is only changed the first time it is set.
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# Thus, host-specific definitions should be at the beginning of the
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# configuration file, and defaults at the end.
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# Host-specific declarations. These may override anything above. A single
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# host may match multiple declarations; these are processed in the order
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# that they are given in.
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Host *.ngs.fi ngs.fi
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2002-06-23 16:09:08 +00:00
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User foo
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2000-02-24 14:29:47 +00:00
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Host fake.com
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HostName another.host.name.real.org
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User blaah
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Port 34289
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ForwardX11 no
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ForwardAgent no
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Host books.com
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RemoteForward 9999 shadows.cs.hut.fi:9999
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Cipher 3des
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Host fascist.blob.com
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Port 23123
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User tylonen
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PasswordAuthentication no
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Host puukko.hut.fi
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User t35124p
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ProxyCommand ssh-proxy %h %p
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Host *.fr
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2002-06-23 16:09:08 +00:00
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PublicKeyAuthentication no
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2000-02-24 14:29:47 +00:00
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Host *.su
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Cipher none
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PasswordAuthentication no
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# Defaults for various options
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Host *
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ForwardAgent no
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2001-05-04 04:14:23 +00:00
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ForwardX11 no
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2000-02-24 14:29:47 +00:00
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PasswordAuthentication yes
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RSAAuthentication yes
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RhostsRSAAuthentication yes
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StrictHostKeyChecking yes
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2004-02-26 10:52:33 +00:00
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TcpKeepAlive no
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2000-02-24 14:29:47 +00:00
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IdentityFile ~/.ssh/identity
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Port 22
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EscapeChar ~
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*/
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/* Keyword tokens. */
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typedef enum {
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oBadOption,
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2004-02-26 10:52:33 +00:00
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oForwardAgent, oForwardX11, oForwardX11Trusted, oGatewayPorts,
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2002-06-23 16:09:08 +00:00
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oPasswordAuthentication, oRSAAuthentication,
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2001-05-04 04:14:23 +00:00
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oChallengeResponseAuthentication, oXAuthLocation,
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2000-02-24 14:29:47 +00:00
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oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
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oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
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oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
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oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
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2004-02-26 10:52:33 +00:00
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oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts,
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2001-05-04 04:14:23 +00:00
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oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs,
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oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication,
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oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
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oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
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2002-03-18 10:09:43 +00:00
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oHostKeyAlgorithms, oBindAddress, oSmartcardDevice,
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2002-04-02 21:48:51 +00:00
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oClearAllForwardings, oNoHostAuthenticationForLocalhost,
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2004-01-07 11:16:27 +00:00
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oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
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oAddressFamily, oGssAuthentication, oGssDelegateCreds,
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2004-04-20 09:46:41 +00:00
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oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
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2005-06-05 15:46:09 +00:00
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oSendEnv, oControlPath, oControlMaster, oHashKnownHosts,
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2004-04-20 09:47:13 +00:00
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oVersionAddendum,
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2004-01-07 11:16:27 +00:00
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oDeprecated, oUnsupported
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2000-02-24 14:29:47 +00:00
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} OpCodes;
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/* Textual representations of the tokens. */
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static struct {
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const char *name;
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OpCodes opcode;
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} keywords[] = {
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{ "forwardagent", oForwardAgent },
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{ "forwardx11", oForwardX11 },
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2004-02-26 10:52:33 +00:00
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{ "forwardx11trusted", oForwardX11Trusted },
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2000-09-10 09:35:38 +00:00
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{ "xauthlocation", oXAuthLocation },
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2000-02-24 14:29:47 +00:00
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{ "gatewayports", oGatewayPorts },
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{ "useprivilegedport", oUsePrivilegedPort },
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2004-01-07 11:16:27 +00:00
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{ "rhostsauthentication", oDeprecated },
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2000-02-24 14:29:47 +00:00
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{ "passwordauthentication", oPasswordAuthentication },
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2000-12-05 02:55:12 +00:00
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{ "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
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{ "kbdinteractivedevices", oKbdInteractiveDevices },
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2000-02-24 14:29:47 +00:00
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{ "rsaauthentication", oRSAAuthentication },
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2001-05-04 04:14:23 +00:00
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{ "pubkeyauthentication", oPubkeyAuthentication },
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{ "dsaauthentication", oPubkeyAuthentication }, /* alias */
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{ "rhostsrsaauthentication", oRhostsRSAAuthentication },
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{ "hostbasedauthentication", oHostbasedAuthentication },
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{ "challengeresponseauthentication", oChallengeResponseAuthentication },
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{ "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
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{ "tisauthentication", oChallengeResponseAuthentication }, /* alias */
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2004-01-07 11:16:27 +00:00
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{ "kerberosauthentication", oUnsupported },
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{ "kerberostgtpassing", oUnsupported },
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{ "afstokenpassing", oUnsupported },
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#if defined(GSSAPI)
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{ "gssapiauthentication", oGssAuthentication },
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{ "gssapidelegatecredentials", oGssDelegateCreds },
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#else
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{ "gssapiauthentication", oUnsupported },
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{ "gssapidelegatecredentials", oUnsupported },
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2000-02-24 14:29:47 +00:00
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#endif
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2002-06-23 16:09:08 +00:00
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{ "fallbacktorsh", oDeprecated },
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{ "usersh", oDeprecated },
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2000-02-24 14:29:47 +00:00
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{ "identityfile", oIdentityFile },
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2001-05-04 04:14:23 +00:00
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{ "identityfile2", oIdentityFile }, /* alias */
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2004-04-20 09:46:41 +00:00
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{ "identitiesonly", oIdentitiesOnly },
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2000-02-24 14:29:47 +00:00
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{ "hostname", oHostName },
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2001-05-04 04:14:23 +00:00
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{ "hostkeyalias", oHostKeyAlias },
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2000-02-24 14:29:47 +00:00
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{ "proxycommand", oProxyCommand },
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{ "port", oPort },
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{ "cipher", oCipher },
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2000-05-15 05:24:25 +00:00
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{ "ciphers", oCiphers },
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2001-05-04 04:14:23 +00:00
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{ "macs", oMacs },
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2000-05-15 05:24:25 +00:00
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{ "protocol", oProtocol },
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2000-02-24 14:29:47 +00:00
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{ "remoteforward", oRemoteForward },
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{ "localforward", oLocalForward },
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{ "user", oUser },
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{ "host", oHost },
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{ "escapechar", oEscapeChar },
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{ "globalknownhostsfile", oGlobalKnownHostsFile },
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2002-03-18 10:09:43 +00:00
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{ "userknownhostsfile", oUserKnownHostsFile }, /* obsolete */
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2000-05-15 05:24:25 +00:00
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{ "globalknownhostsfile2", oGlobalKnownHostsFile2 },
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2002-03-18 10:09:43 +00:00
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{ "userknownhostsfile2", oUserKnownHostsFile2 }, /* obsolete */
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2000-02-24 14:29:47 +00:00
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{ "connectionattempts", oConnectionAttempts },
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{ "batchmode", oBatchMode },
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{ "checkhostip", oCheckHostIP },
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{ "stricthostkeychecking", oStrictHostKeyChecking },
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{ "compression", oCompression },
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{ "compressionlevel", oCompressionLevel },
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2004-02-26 10:52:33 +00:00
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{ "tcpkeepalive", oTCPKeepAlive },
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{ "keepalive", oTCPKeepAlive }, /* obsolete */
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2000-02-24 14:29:47 +00:00
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{ "numberofpasswordprompts", oNumberOfPasswordPrompts },
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{ "loglevel", oLogLevel },
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2001-05-04 04:14:23 +00:00
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{ "dynamicforward", oDynamicForward },
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{ "preferredauthentications", oPreferredAuthentications },
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{ "hostkeyalgorithms", oHostKeyAlgorithms },
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2002-03-18 10:09:43 +00:00
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{ "bindaddress", oBindAddress },
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2004-01-07 11:16:27 +00:00
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#ifdef SMARTCARD
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2002-03-18 10:09:43 +00:00
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{ "smartcarddevice", oSmartcardDevice },
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2004-01-07 11:16:27 +00:00
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#else
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{ "smartcarddevice", oUnsupported },
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#endif
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2002-03-18 10:09:43 +00:00
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{ "clearallforwardings", oClearAllForwardings },
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2003-04-23 17:13:13 +00:00
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{ "enablesshkeysign", oEnableSSHKeysign },
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2004-01-07 11:16:27 +00:00
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{ "verifyhostkeydns", oVerifyHostKeyDNS },
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2002-03-18 10:09:43 +00:00
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{ "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
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2004-01-07 11:16:27 +00:00
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{ "rekeylimit", oRekeyLimit },
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{ "connecttimeout", oConnectTimeout },
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{ "addressfamily", oAddressFamily },
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2004-02-26 10:52:33 +00:00
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{ "serveraliveinterval", oServerAliveInterval },
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{ "serveralivecountmax", oServerAliveCountMax },
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2004-10-28 16:11:31 +00:00
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{ "sendenv", oSendEnv },
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{ "controlpath", oControlPath },
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{ "controlmaster", oControlMaster },
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2005-06-05 15:46:09 +00:00
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{ "hashknownhosts", oHashKnownHosts },
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2002-06-29 10:51:56 +00:00
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{ "versionaddendum", oVersionAddendum },
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2002-03-18 10:09:43 +00:00
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{ NULL, oBadOption }
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2000-02-24 14:29:47 +00:00
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};
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/*
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* Adds a local TCP/IP port forward to options. Never returns if there is an
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* error.
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*/
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2000-05-15 05:24:25 +00:00
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void
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2005-06-05 15:46:09 +00:00
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add_local_forward(Options *options, const Forward *newfwd)
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2000-02-24 14:29:47 +00:00
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{
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Forward *fwd;
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2002-10-29 10:16:02 +00:00
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#ifndef NO_IPPORT_RESERVED_CONCEPT
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2000-02-24 14:29:47 +00:00
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extern uid_t original_real_uid;
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2005-06-05 15:46:09 +00:00
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if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0)
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2001-05-04 04:14:23 +00:00
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fatal("Privileged ports can only be forwarded by root.");
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2002-06-27 22:42:11 +00:00
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#endif
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2000-02-24 14:29:47 +00:00
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if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
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fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
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fwd = &options->local_forwards[options->num_local_forwards++];
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2005-06-05 15:46:09 +00:00
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fwd->listen_host = (newfwd->listen_host == NULL) ?
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NULL : xstrdup(newfwd->listen_host);
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fwd->listen_port = newfwd->listen_port;
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fwd->connect_host = xstrdup(newfwd->connect_host);
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fwd->connect_port = newfwd->connect_port;
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2000-02-24 14:29:47 +00:00
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}
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/*
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* Adds a remote TCP/IP port forward to options. Never returns if there is
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* an error.
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*/
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2000-05-15 05:24:25 +00:00
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void
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2005-06-05 15:46:09 +00:00
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add_remote_forward(Options *options, const Forward *newfwd)
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2000-02-24 14:29:47 +00:00
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{
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Forward *fwd;
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if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
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fatal("Too many remote forwards (max %d).",
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2002-03-18 10:09:43 +00:00
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SSH_MAX_FORWARDS_PER_DIRECTION);
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2000-02-24 14:29:47 +00:00
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fwd = &options->remote_forwards[options->num_remote_forwards++];
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2005-06-05 15:46:09 +00:00
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fwd->listen_host = (newfwd->listen_host == NULL) ?
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NULL : xstrdup(newfwd->listen_host);
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fwd->listen_port = newfwd->listen_port;
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fwd->connect_host = xstrdup(newfwd->connect_host);
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fwd->connect_port = newfwd->connect_port;
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2000-02-24 14:29:47 +00:00
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}
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2002-03-18 10:09:43 +00:00
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static void
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clear_forwardings(Options *options)
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{
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int i;
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2005-06-05 15:46:09 +00:00
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for (i = 0; i < options->num_local_forwards; i++) {
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if (options->local_forwards[i].listen_host != NULL)
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xfree(options->local_forwards[i].listen_host);
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xfree(options->local_forwards[i].connect_host);
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}
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2002-03-18 10:09:43 +00:00
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options->num_local_forwards = 0;
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2005-06-05 15:46:09 +00:00
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for (i = 0; i < options->num_remote_forwards; i++) {
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if (options->remote_forwards[i].listen_host != NULL)
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xfree(options->remote_forwards[i].listen_host);
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xfree(options->remote_forwards[i].connect_host);
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}
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2002-03-18 10:09:43 +00:00
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options->num_remote_forwards = 0;
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}
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2000-02-24 14:29:47 +00:00
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/*
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2001-05-04 04:14:23 +00:00
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* Returns the number of the token pointed to by cp or oBadOption.
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2000-02-24 14:29:47 +00:00
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*/
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2000-05-15 05:24:25 +00:00
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static OpCodes
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2000-02-24 14:29:47 +00:00
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parse_token(const char *cp, const char *filename, int linenum)
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{
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2001-05-04 04:14:23 +00:00
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u_int i;
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2000-02-24 14:29:47 +00:00
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for (i = 0; keywords[i].name; i++)
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|
|
if (strcasecmp(cp, keywords[i].name) == 0)
|
|
|
|
return keywords[i].opcode;
|
|
|
|
|
2001-05-04 04:14:23 +00:00
|
|
|
error("%s: line %d: Bad configuration option: %s",
|
|
|
|
filename, linenum, cp);
|
2000-02-24 14:29:47 +00:00
|
|
|
return oBadOption;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Processes a single option line as used in the configuration files. This
|
|
|
|
* only sets those values that have not already been set.
|
|
|
|
*/
|
2003-04-23 17:13:13 +00:00
|
|
|
#define WHITESPACE " \t\r\n"
|
2000-02-24 14:29:47 +00:00
|
|
|
|
|
|
|
int
|
|
|
|
process_config_line(Options *options, const char *host,
|
|
|
|
char *line, const char *filename, int linenum,
|
|
|
|
int *activep)
|
|
|
|
{
|
2005-06-05 15:46:09 +00:00
|
|
|
char *s, **charptr, *endofnumber, *keyword, *arg, *arg2, fwdarg[256];
|
2000-02-24 14:29:47 +00:00
|
|
|
int opcode, *intptr, value;
|
2003-04-23 17:13:13 +00:00
|
|
|
size_t len;
|
2005-06-05 15:46:09 +00:00
|
|
|
Forward fwd;
|
2000-02-24 14:29:47 +00:00
|
|
|
|
2004-01-07 11:16:27 +00:00
|
|
|
/* Strip trailing whitespace */
|
2005-06-05 15:46:09 +00:00
|
|
|
for (len = strlen(line) - 1; len > 0; len--) {
|
2004-01-07 11:16:27 +00:00
|
|
|
if (strchr(WHITESPACE, line[len]) == NULL)
|
|
|
|
break;
|
|
|
|
line[len] = '\0';
|
|
|
|
}
|
|
|
|
|
2000-09-10 09:35:38 +00:00
|
|
|
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);
|
2001-05-04 04:14:23 +00:00
|
|
|
if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
|
2000-02-24 14:29:47 +00:00
|
|
|
return 0;
|
|
|
|
|
2000-09-10 09:35:38 +00:00
|
|
|
opcode = parse_token(keyword, filename, linenum);
|
2000-02-24 14:29:47 +00:00
|
|
|
|
|
|
|
switch (opcode) {
|
|
|
|
case oBadOption:
|
|
|
|
/* don't panic, but count bad options */
|
|
|
|
return -1;
|
|
|
|
/* NOTREACHED */
|
2004-01-07 11:16:27 +00:00
|
|
|
case oConnectTimeout:
|
|
|
|
intptr = &options->connection_timeout;
|
2004-02-26 10:52:33 +00:00
|
|
|
parse_time:
|
2004-01-07 11:16:27 +00:00
|
|
|
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 (*intptr == -1)
|
|
|
|
*intptr = value;
|
|
|
|
break;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oForwardAgent:
|
|
|
|
intptr = &options->forward_agent;
|
|
|
|
parse_flag:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
|
|
|
|
value = 0; /* To avoid compiler warning... */
|
2000-09-10 09:35:38 +00:00
|
|
|
if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
|
2000-02-24 14:29:47 +00:00
|
|
|
value = 1;
|
2000-09-10 09:35:38 +00:00
|
|
|
else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
|
2000-02-24 14:29:47 +00:00
|
|
|
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;
|
|
|
|
|
2004-02-26 10:52:33 +00:00
|
|
|
case oForwardX11Trusted:
|
|
|
|
intptr = &options->forward_x11_trusted;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oGatewayPorts:
|
|
|
|
intptr = &options->gateway_ports;
|
|
|
|
goto parse_flag;
|
|
|
|
|
|
|
|
case oUsePrivilegedPort:
|
|
|
|
intptr = &options->use_privileged_port;
|
|
|
|
goto parse_flag;
|
|
|
|
|
|
|
|
case oPasswordAuthentication:
|
|
|
|
intptr = &options->password_authentication;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2000-12-05 02:55:12 +00:00
|
|
|
case oKbdInteractiveAuthentication:
|
|
|
|
intptr = &options->kbd_interactive_authentication;
|
|
|
|
goto parse_flag;
|
|
|
|
|
|
|
|
case oKbdInteractiveDevices:
|
|
|
|
charptr = &options->kbd_interactive_devices;
|
|
|
|
goto parse_string;
|
|
|
|
|
2001-05-04 04:14:23 +00:00
|
|
|
case oPubkeyAuthentication:
|
|
|
|
intptr = &options->pubkey_authentication;
|
2000-05-15 05:24:25 +00:00
|
|
|
goto parse_flag;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oRSAAuthentication:
|
|
|
|
intptr = &options->rsa_authentication;
|
|
|
|
goto parse_flag;
|
|
|
|
|
|
|
|
case oRhostsRSAAuthentication:
|
|
|
|
intptr = &options->rhosts_rsa_authentication;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2001-05-04 04:14:23 +00:00
|
|
|
case oHostbasedAuthentication:
|
|
|
|
intptr = &options->hostbased_authentication;
|
2000-02-24 14:29:47 +00:00
|
|
|
goto parse_flag;
|
|
|
|
|
2002-03-18 10:09:43 +00:00
|
|
|
case oChallengeResponseAuthentication:
|
|
|
|
intptr = &options->challenge_response_authentication;
|
|
|
|
goto parse_flag;
|
2004-01-07 11:16:27 +00:00
|
|
|
|
|
|
|
case oGssAuthentication:
|
|
|
|
intptr = &options->gss_authentication;
|
2000-02-28 19:03:50 +00:00
|
|
|
goto parse_flag;
|
2004-01-07 11:16:27 +00:00
|
|
|
|
|
|
|
case oGssDelegateCreds:
|
|
|
|
intptr = &options->gss_deleg_creds;
|
2000-02-24 14:29:47 +00:00
|
|
|
goto parse_flag;
|
2004-01-07 11:16:27 +00:00
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oBatchMode:
|
|
|
|
intptr = &options->batch_mode;
|
|
|
|
goto parse_flag;
|
|
|
|
|
|
|
|
case oCheckHostIP:
|
|
|
|
intptr = &options->check_host_ip;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2004-01-07 11:16:27 +00:00
|
|
|
case oVerifyHostKeyDNS:
|
|
|
|
intptr = &options->verify_host_key_dns;
|
2004-02-26 10:52:33 +00:00
|
|
|
goto parse_yesnoask;
|
2004-01-07 11:16:27 +00:00
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oStrictHostKeyChecking:
|
|
|
|
intptr = &options->strict_host_key_checking;
|
2004-02-26 10:52:33 +00:00
|
|
|
parse_yesnoask:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2001-05-04 04:14:23 +00:00
|
|
|
fatal("%.200s line %d: Missing yes/no/ask argument.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum);
|
2000-02-24 14:29:47 +00:00
|
|
|
value = 0; /* To avoid compiler warning... */
|
2000-09-10 09:35:38 +00:00
|
|
|
if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
|
2000-02-24 14:29:47 +00:00
|
|
|
value = 1;
|
2000-09-10 09:35:38 +00:00
|
|
|
else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
|
2000-02-24 14:29:47 +00:00
|
|
|
value = 0;
|
2000-09-10 09:35:38 +00:00
|
|
|
else if (strcmp(arg, "ask") == 0)
|
2000-02-24 14:29:47 +00:00
|
|
|
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;
|
|
|
|
|
2004-02-26 10:52:33 +00:00
|
|
|
case oTCPKeepAlive:
|
|
|
|
intptr = &options->tcp_keep_alive;
|
2000-02-24 14:29:47 +00:00
|
|
|
goto parse_flag;
|
|
|
|
|
2002-03-18 10:09:43 +00:00
|
|
|
case oNoHostAuthenticationForLocalhost:
|
|
|
|
intptr = &options->no_host_authentication_for_localhost;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oNumberOfPasswordPrompts:
|
|
|
|
intptr = &options->number_of_password_prompts;
|
|
|
|
goto parse_int;
|
|
|
|
|
|
|
|
case oCompressionLevel:
|
|
|
|
intptr = &options->compression_level;
|
|
|
|
goto parse_int;
|
|
|
|
|
2004-01-07 11:16:27 +00:00
|
|
|
case oRekeyLimit:
|
|
|
|
intptr = &options->rekey_limit;
|
|
|
|
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);
|
|
|
|
value = strtol(arg, &endofnumber, 10);
|
|
|
|
if (arg == endofnumber)
|
|
|
|
fatal("%.200s line %d: Bad number.", filename, linenum);
|
|
|
|
switch (toupper(*endofnumber)) {
|
|
|
|
case 'K':
|
|
|
|
value *= 1<<10;
|
|
|
|
break;
|
|
|
|
case 'M':
|
|
|
|
value *= 1<<20;
|
|
|
|
break;
|
|
|
|
case 'G':
|
|
|
|
value *= 1<<30;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (*activep && *intptr == -1)
|
|
|
|
*intptr = value;
|
|
|
|
break;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oIdentityFile:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
|
|
|
if (*activep) {
|
2001-05-04 04:14:23 +00:00
|
|
|
intptr = &options->num_identity_files;
|
2000-05-15 05:24:25 +00:00
|
|
|
if (*intptr >= SSH_MAX_IDENTITY_FILES)
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Too many identity files specified (max %d).",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, SSH_MAX_IDENTITY_FILES);
|
2001-05-04 04:14:23 +00:00
|
|
|
charptr = &options->identity_files[*intptr];
|
2000-09-10 09:35:38 +00:00
|
|
|
*charptr = xstrdup(arg);
|
2000-05-15 05:24:25 +00:00
|
|
|
*intptr = *intptr + 1;
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2000-09-10 09:35:38 +00:00
|
|
|
case oXAuthLocation:
|
|
|
|
charptr=&options->xauth_location;
|
|
|
|
goto parse_string;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oUser:
|
|
|
|
charptr = &options->user;
|
|
|
|
parse_string:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
|
|
|
if (*activep && *charptr == NULL)
|
2000-09-10 09:35:38 +00:00
|
|
|
*charptr = xstrdup(arg);
|
2000-02-24 14:29:47 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case oGlobalKnownHostsFile:
|
|
|
|
charptr = &options->system_hostfile;
|
|
|
|
goto parse_string;
|
|
|
|
|
|
|
|
case oUserKnownHostsFile:
|
|
|
|
charptr = &options->user_hostfile;
|
|
|
|
goto parse_string;
|
|
|
|
|
2000-05-15 05:24:25 +00:00
|
|
|
case oGlobalKnownHostsFile2:
|
|
|
|
charptr = &options->system_hostfile2;
|
|
|
|
goto parse_string;
|
|
|
|
|
|
|
|
case oUserKnownHostsFile2:
|
|
|
|
charptr = &options->user_hostfile2;
|
|
|
|
goto parse_string;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oHostName:
|
|
|
|
charptr = &options->hostname;
|
|
|
|
goto parse_string;
|
|
|
|
|
2001-05-04 04:14:23 +00:00
|
|
|
case oHostKeyAlias:
|
|
|
|
charptr = &options->host_key_alias;
|
|
|
|
goto parse_string;
|
|
|
|
|
|
|
|
case oPreferredAuthentications:
|
|
|
|
charptr = &options->preferred_authentications;
|
|
|
|
goto parse_string;
|
|
|
|
|
2002-03-18 10:09:43 +00:00
|
|
|
case oBindAddress:
|
|
|
|
charptr = &options->bind_address;
|
|
|
|
goto parse_string;
|
|
|
|
|
|
|
|
case oSmartcardDevice:
|
|
|
|
charptr = &options->smartcard_device;
|
|
|
|
goto parse_string;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oProxyCommand:
|
2004-01-07 11:16:27 +00:00
|
|
|
if (s == NULL)
|
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
2000-02-24 14:29:47 +00:00
|
|
|
charptr = &options->proxy_command;
|
2003-04-23 17:13:13 +00:00
|
|
|
len = strspn(s, WHITESPACE "=");
|
2000-02-24 14:29:47 +00:00
|
|
|
if (*activep && *charptr == NULL)
|
2003-04-23 17:13:13 +00:00
|
|
|
*charptr = xstrdup(s + len);
|
2000-02-24 14:29:47 +00:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
case oPort:
|
|
|
|
intptr = &options->port;
|
|
|
|
parse_int:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
2000-09-10 09:35:38 +00:00
|
|
|
if (arg[0] < '0' || arg[0] > '9')
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Bad number.", filename, linenum);
|
|
|
|
|
|
|
|
/* Octal, decimal, or hex format? */
|
2000-09-10 09:35:38 +00:00
|
|
|
value = strtol(arg, &endofnumber, 0);
|
|
|
|
if (arg == endofnumber)
|
2000-02-24 14:29:47 +00:00
|
|
|
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;
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-06-03 07:31:44 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
2000-09-10 09:35:38 +00:00
|
|
|
value = cipher_number(arg);
|
2000-02-24 14:29:47 +00:00
|
|
|
if (value == -1)
|
|
|
|
fatal("%.200s line %d: Bad cipher '%s'.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg ? arg : "<NONE>");
|
2000-02-24 14:29:47 +00:00
|
|
|
if (*activep && *intptr == -1)
|
|
|
|
*intptr = value;
|
|
|
|
break;
|
|
|
|
|
2000-05-15 05:24:25 +00:00
|
|
|
case oCiphers:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-06-03 07:31:44 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
2000-09-10 09:35:38 +00:00
|
|
|
if (!ciphers_valid(arg))
|
2000-05-15 05:24:25 +00:00
|
|
|
fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg ? arg : "<NONE>");
|
2000-05-15 05:24:25 +00:00
|
|
|
if (*activep && options->ciphers == NULL)
|
2000-09-10 09:35:38 +00:00
|
|
|
options->ciphers = xstrdup(arg);
|
2000-05-15 05:24:25 +00:00
|
|
|
break;
|
|
|
|
|
2001-05-04 04:14:23 +00:00
|
|
|
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'.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg ? arg : "<NONE>");
|
2001-05-04 04:14:23 +00:00
|
|
|
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'.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg ? arg : "<NONE>");
|
2001-05-04 04:14:23 +00:00
|
|
|
if (*activep && options->hostkeyalgorithms == NULL)
|
|
|
|
options->hostkeyalgorithms = xstrdup(arg);
|
|
|
|
break;
|
|
|
|
|
2000-05-15 05:24:25 +00:00
|
|
|
case oProtocol:
|
|
|
|
intptr = &options->protocol;
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-06-03 07:31:44 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
2000-09-10 09:35:38 +00:00
|
|
|
value = proto_spec(arg);
|
2000-05-15 05:24:25 +00:00
|
|
|
if (value == SSH_PROTO_UNKNOWN)
|
|
|
|
fatal("%.200s line %d: Bad protocol spec '%s'.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg ? arg : "<NONE>");
|
2000-05-15 05:24:25 +00:00
|
|
|
if (*activep && *intptr == SSH_PROTO_UNKNOWN)
|
|
|
|
*intptr = value;
|
|
|
|
break;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oLogLevel:
|
|
|
|
intptr = (int *) &options->log_level;
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
value = log_level_number(arg);
|
2002-03-18 10:09:43 +00:00
|
|
|
if (value == SYSLOG_LEVEL_NOT_SET)
|
2001-05-04 04:14:23 +00:00
|
|
|
fatal("%.200s line %d: unsupported log level '%s'",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg ? arg : "<NONE>");
|
|
|
|
if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET)
|
2000-02-24 14:29:47 +00:00
|
|
|
*intptr = (LogLevel) value;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case oLocalForward:
|
2002-03-18 10:09:43 +00:00
|
|
|
case oRemoteForward:
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
2005-06-05 15:46:09 +00:00
|
|
|
if (arg == NULL || *arg == '\0')
|
2002-03-18 10:09:43 +00:00
|
|
|
fatal("%.200s line %d: Missing port argument.",
|
|
|
|
filename, linenum);
|
2005-06-05 15:46:09 +00:00
|
|
|
arg2 = strdelim(&s);
|
|
|
|
if (arg2 == NULL || *arg2 == '\0')
|
|
|
|
fatal("%.200s line %d: Missing target argument.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum);
|
2005-06-05 15:46:09 +00:00
|
|
|
|
|
|
|
/* construct a string for parse_forward */
|
|
|
|
snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
|
|
|
|
|
|
|
|
if (parse_forward(&fwd, fwdarg) == 0)
|
2002-03-18 10:09:43 +00:00
|
|
|
fatal("%.200s line %d: Bad forwarding specification.",
|
|
|
|
filename, linenum);
|
2005-06-05 15:46:09 +00:00
|
|
|
|
2002-03-18 10:09:43 +00:00
|
|
|
if (*activep) {
|
|
|
|
if (opcode == oLocalForward)
|
2005-06-05 15:46:09 +00:00
|
|
|
add_local_forward(options, &fwd);
|
2002-03-18 10:09:43 +00:00
|
|
|
else if (opcode == oRemoteForward)
|
2005-06-05 15:46:09 +00:00
|
|
|
add_remote_forward(options, &fwd);
|
2002-03-18 10:09:43 +00:00
|
|
|
}
|
2000-02-24 14:29:47 +00:00
|
|
|
break;
|
|
|
|
|
2001-05-04 04:14:23 +00:00
|
|
|
case oDynamicForward:
|
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
|
|
|
fatal("%.200s line %d: Missing port argument.",
|
|
|
|
filename, linenum);
|
2005-06-05 15:46:09 +00:00
|
|
|
memset(&fwd, '\0', sizeof(fwd));
|
|
|
|
fwd.connect_host = "socks";
|
|
|
|
fwd.listen_host = hpdelim(&arg);
|
|
|
|
if (fwd.listen_host == NULL ||
|
|
|
|
strlen(fwd.listen_host) >= NI_MAXHOST)
|
|
|
|
fatal("%.200s line %d: Bad forwarding specification.",
|
|
|
|
filename, linenum);
|
|
|
|
if (arg) {
|
|
|
|
fwd.listen_port = a2port(arg);
|
|
|
|
fwd.listen_host = cleanhostname(fwd.listen_host);
|
|
|
|
} else {
|
|
|
|
fwd.listen_port = a2port(fwd.listen_host);
|
|
|
|
fwd.listen_host = "";
|
|
|
|
}
|
|
|
|
if (fwd.listen_port == 0)
|
2001-05-04 04:14:23 +00:00
|
|
|
fatal("%.200s line %d: Badly formatted port number.",
|
|
|
|
filename, linenum);
|
2002-03-18 10:09:43 +00:00
|
|
|
if (*activep)
|
2005-06-05 15:46:09 +00:00
|
|
|
add_local_forward(options, &fwd);
|
2001-05-04 04:14:23 +00:00
|
|
|
break;
|
|
|
|
|
2002-03-18 10:09:43 +00:00
|
|
|
case oClearAllForwardings:
|
|
|
|
intptr = &options->clear_forwardings;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
case oHost:
|
|
|
|
*activep = 0;
|
2000-09-10 09:35:38 +00:00
|
|
|
while ((arg = strdelim(&s)) != NULL && *arg != '\0')
|
|
|
|
if (match_pattern(host, arg)) {
|
|
|
|
debug("Applying options for %.100s", arg);
|
2000-02-24 14:29:47 +00:00
|
|
|
*activep = 1;
|
|
|
|
break;
|
|
|
|
}
|
2000-09-10 09:35:38 +00:00
|
|
|
/* Avoid garbage check below, as strdelim is done. */
|
2000-02-24 14:29:47 +00:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
case oEscapeChar:
|
|
|
|
intptr = &options->escape_char;
|
2000-09-10 09:35:38 +00:00
|
|
|
arg = strdelim(&s);
|
|
|
|
if (!arg || *arg == '\0')
|
2000-02-24 14:29:47 +00:00
|
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum);
|
2000-09-10 09:35:38 +00:00
|
|
|
if (arg[0] == '^' && arg[2] == 0 &&
|
2001-05-04 04:14:23 +00:00
|
|
|
(u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
|
|
|
|
value = (u_char) arg[1] & 31;
|
2000-09-10 09:35:38 +00:00
|
|
|
else if (strlen(arg) == 1)
|
2001-05-04 04:14:23 +00:00
|
|
|
value = (u_char) arg[0];
|
2000-09-10 09:35:38 +00:00
|
|
|
else if (strcmp(arg, "none") == 0)
|
2002-03-18 10:09:43 +00:00
|
|
|
value = SSH_ESCAPECHAR_NONE;
|
2000-02-24 14:29:47 +00:00
|
|
|
else {
|
|
|
|
fatal("%.200s line %d: Bad escape character.",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum);
|
2000-02-24 14:29:47 +00:00
|
|
|
/* NOTREACHED */
|
|
|
|
value = 0; /* Avoid compiler warning. */
|
|
|
|
}
|
|
|
|
if (*activep && *intptr == -1)
|
|
|
|
*intptr = value;
|
|
|
|
break;
|
|
|
|
|
2004-01-07 11:16:27 +00:00
|
|
|
case oAddressFamily:
|
|
|
|
arg = strdelim(&s);
|
|
|
|
intptr = &options->address_family;
|
|
|
|
if (strcasecmp(arg, "inet") == 0)
|
|
|
|
value = AF_INET;
|
|
|
|
else if (strcasecmp(arg, "inet6") == 0)
|
|
|
|
value = AF_INET6;
|
|
|
|
else if (strcasecmp(arg, "any") == 0)
|
|
|
|
value = AF_UNSPEC;
|
|
|
|
else
|
|
|
|
fatal("Unsupported AddressFamily \"%s\"", arg);
|
|
|
|
if (*activep && *intptr == -1)
|
|
|
|
*intptr = value;
|
|
|
|
break;
|
|
|
|
|
2003-04-23 17:13:13 +00:00
|
|
|
case oEnableSSHKeysign:
|
|
|
|
intptr = &options->enable_ssh_keysign;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2004-04-20 09:46:41 +00:00
|
|
|
case oIdentitiesOnly:
|
|
|
|
intptr = &options->identities_only;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2004-02-26 10:52:33 +00:00
|
|
|
case oServerAliveInterval:
|
|
|
|
intptr = &options->server_alive_interval;
|
|
|
|
goto parse_time;
|
|
|
|
|
|
|
|
case oServerAliveCountMax:
|
|
|
|
intptr = &options->server_alive_count_max;
|
|
|
|
goto parse_int;
|
|
|
|
|
2004-10-28 16:11:31 +00:00
|
|
|
case oSendEnv:
|
|
|
|
while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
|
|
|
|
if (strchr(arg, '=') != NULL)
|
|
|
|
fatal("%s line %d: Invalid environment name.",
|
|
|
|
filename, linenum);
|
2005-06-05 15:46:09 +00:00
|
|
|
if (!*activep)
|
|
|
|
continue;
|
2004-10-28 16:11:31 +00:00
|
|
|
if (options->num_send_env >= MAX_SEND_ENV)
|
|
|
|
fatal("%s line %d: too many send env.",
|
|
|
|
filename, linenum);
|
|
|
|
options->send_env[options->num_send_env++] =
|
|
|
|
xstrdup(arg);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case oControlPath:
|
|
|
|
charptr = &options->control_path;
|
|
|
|
goto parse_string;
|
|
|
|
|
|
|
|
case oControlMaster:
|
|
|
|
intptr = &options->control_master;
|
|
|
|
goto parse_yesnoask;
|
|
|
|
|
2005-06-05 15:46:09 +00:00
|
|
|
case oHashKnownHosts:
|
|
|
|
intptr = &options->hash_known_hosts;
|
|
|
|
goto parse_flag;
|
|
|
|
|
2002-06-29 10:51:56 +00:00
|
|
|
case oVersionAddendum:
|
|
|
|
ssh_version_set_addendum(strtok(s, "\n"));
|
|
|
|
do {
|
|
|
|
arg = strdelim(&s);
|
|
|
|
} while (arg != NULL && *arg != '\0');
|
|
|
|
break;
|
|
|
|
|
2002-06-23 16:09:08 +00:00
|
|
|
case oDeprecated:
|
|
|
|
debug("%s line %d: Deprecated option \"%s\"",
|
|
|
|
filename, linenum, keyword);
|
|
|
|
return 0;
|
|
|
|
|
2004-01-07 11:16:27 +00:00
|
|
|
case oUnsupported:
|
|
|
|
error("%s line %d: Unsupported option \"%s\"",
|
|
|
|
filename, linenum, keyword);
|
|
|
|
return 0;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
default:
|
|
|
|
fatal("process_config_line: Unimplemented opcode %d", opcode);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check that there is no garbage at end of line. */
|
2001-05-04 04:14:23 +00:00
|
|
|
if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
|
2000-09-10 09:35:38 +00:00
|
|
|
fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, linenum, arg);
|
2000-09-10 09:35:38 +00:00
|
|
|
}
|
2000-02-24 14:29:47 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reads the config file and modifies the options accordingly. Options
|
|
|
|
* should already be initialized before this call. This never returns if
|
2002-03-18 10:09:43 +00:00
|
|
|
* there is an error. If the file does not exist, this returns 0.
|
2000-02-24 14:29:47 +00:00
|
|
|
*/
|
|
|
|
|
2002-03-18 10:09:43 +00:00
|
|
|
int
|
2004-10-28 16:11:31 +00:00
|
|
|
read_config_file(const char *filename, const char *host, Options *options,
|
|
|
|
int checkperm)
|
2000-02-24 14:29:47 +00:00
|
|
|
{
|
|
|
|
FILE *f;
|
|
|
|
char line[1024];
|
|
|
|
int active, linenum;
|
|
|
|
int bad_options = 0;
|
|
|
|
|
|
|
|
/* Open the file. */
|
2004-10-28 16:11:31 +00:00
|
|
|
if ((f = fopen(filename, "r")) == NULL)
|
2002-03-18 10:09:43 +00:00
|
|
|
return 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
|
2004-10-28 16:11:31 +00:00
|
|
|
if (checkperm) {
|
|
|
|
struct stat sb;
|
|
|
|
|
|
|
|
if (fstat(fileno(f), &sb) == -1)
|
|
|
|
fatal("fstat %s: %s", filename, strerror(errno));
|
|
|
|
if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
|
|
|
|
(sb.st_mode & 022) != 0))
|
|
|
|
fatal("Bad owner or permissions on %s", filename);
|
|
|
|
}
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
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++;
|
|
|
|
if (process_config_line(options, host, line, filename, linenum, &active) != 0)
|
|
|
|
bad_options++;
|
|
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
if (bad_options > 0)
|
2001-05-04 04:14:23 +00:00
|
|
|
fatal("%s: terminating, %d bad configuration options",
|
2002-03-18 10:09:43 +00:00
|
|
|
filename, bad_options);
|
|
|
|
return 1;
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
2000-05-15 05:24:25 +00:00
|
|
|
void
|
2000-02-24 14:29:47 +00:00
|
|
|
initialize_options(Options * options)
|
|
|
|
{
|
|
|
|
memset(options, 'X', sizeof(*options));
|
|
|
|
options->forward_agent = -1;
|
|
|
|
options->forward_x11 = -1;
|
2004-02-26 10:52:33 +00:00
|
|
|
options->forward_x11_trusted = -1;
|
2000-09-10 09:35:38 +00:00
|
|
|
options->xauth_location = NULL;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->gateway_ports = -1;
|
|
|
|
options->use_privileged_port = -1;
|
|
|
|
options->rsa_authentication = -1;
|
2001-05-04 04:14:23 +00:00
|
|
|
options->pubkey_authentication = -1;
|
2002-03-18 10:09:43 +00:00
|
|
|
options->challenge_response_authentication = -1;
|
2004-01-07 11:16:27 +00:00
|
|
|
options->gss_authentication = -1;
|
|
|
|
options->gss_deleg_creds = -1;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->password_authentication = -1;
|
2000-12-05 02:55:12 +00:00
|
|
|
options->kbd_interactive_authentication = -1;
|
|
|
|
options->kbd_interactive_devices = NULL;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->rhosts_rsa_authentication = -1;
|
2001-05-04 04:14:23 +00:00
|
|
|
options->hostbased_authentication = -1;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->batch_mode = -1;
|
|
|
|
options->check_host_ip = -1;
|
|
|
|
options->strict_host_key_checking = -1;
|
|
|
|
options->compression = -1;
|
2004-02-26 10:52:33 +00:00
|
|
|
options->tcp_keep_alive = -1;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->compression_level = -1;
|
|
|
|
options->port = -1;
|
2004-01-07 11:16:27 +00:00
|
|
|
options->address_family = -1;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->connection_attempts = -1;
|
2004-01-07 11:16:27 +00:00
|
|
|
options->connection_timeout = -1;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->number_of_password_prompts = -1;
|
|
|
|
options->cipher = -1;
|
2000-05-15 05:24:25 +00:00
|
|
|
options->ciphers = NULL;
|
2001-05-04 04:14:23 +00:00
|
|
|
options->macs = NULL;
|
|
|
|
options->hostkeyalgorithms = NULL;
|
2000-05-15 05:24:25 +00:00
|
|
|
options->protocol = SSH_PROTO_UNKNOWN;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->num_identity_files = 0;
|
|
|
|
options->hostname = NULL;
|
2001-05-04 04:14:23 +00:00
|
|
|
options->host_key_alias = NULL;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->proxy_command = NULL;
|
|
|
|
options->user = NULL;
|
|
|
|
options->escape_char = -1;
|
|
|
|
options->system_hostfile = NULL;
|
|
|
|
options->user_hostfile = NULL;
|
2000-05-15 05:24:25 +00:00
|
|
|
options->system_hostfile2 = NULL;
|
|
|
|
options->user_hostfile2 = NULL;
|
2000-02-24 14:29:47 +00:00
|
|
|
options->num_local_forwards = 0;
|
|
|
|
options->num_remote_forwards = 0;
|
2002-03-18 10:09:43 +00:00
|
|
|
options->clear_forwardings = -1;
|
|
|
|
options->log_level = SYSLOG_LEVEL_NOT_SET;
|
2001-05-04 04:14:23 +00:00
|
|
|
options->preferred_authentications = NULL;
|
2002-03-18 10:09:43 +00:00
|
|
|
options->bind_address = NULL;
|
|
|
|
options->smartcard_device = NULL;
|
2003-04-23 17:13:13 +00:00
|
|
|
options->enable_ssh_keysign = - 1;
|
2002-03-18 10:09:43 +00:00
|
|
|
options->no_host_authentication_for_localhost = - 1;
|
2004-04-20 09:46:41 +00:00
|
|
|
options->identities_only = - 1;
|
2004-01-07 11:16:27 +00:00
|
|
|
options->rekey_limit = - 1;
|
|
|
|
options->verify_host_key_dns = -1;
|
2004-02-26 10:52:33 +00:00
|
|
|
options->server_alive_interval = -1;
|
|
|
|
options->server_alive_count_max = -1;
|
2004-10-28 16:11:31 +00:00
|
|
|
options->num_send_env = 0;
|
|
|
|
options->control_path = NULL;
|
|
|
|
options->control_master = -1;
|
2005-06-05 15:46:09 +00:00
|
|
|
options->hash_known_hosts = -1;
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Called after processing other sources of option data, this fills those
|
|
|
|
* options for which no value has been specified with their default values.
|
|
|
|
*/
|
|
|
|
|
2000-05-15 05:24:25 +00:00
|
|
|
void
|
2000-02-24 14:29:47 +00:00
|
|
|
fill_default_options(Options * options)
|
|
|
|
{
|
2001-05-04 04:14:23 +00:00
|
|
|
int len;
|
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->forward_agent == -1)
|
2000-06-03 07:31:44 +00:00
|
|
|
options->forward_agent = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->forward_x11 == -1)
|
2000-03-03 05:58:39 +00:00
|
|
|
options->forward_x11 = 0;
|
2004-02-26 10:52:33 +00:00
|
|
|
if (options->forward_x11_trusted == -1)
|
|
|
|
options->forward_x11_trusted = 0;
|
2000-09-10 09:35:38 +00:00
|
|
|
if (options->xauth_location == NULL)
|
2002-03-18 10:09:43 +00:00
|
|
|
options->xauth_location = _PATH_XAUTH;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->gateway_ports == -1)
|
|
|
|
options->gateway_ports = 0;
|
|
|
|
if (options->use_privileged_port == -1)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->use_privileged_port = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->rsa_authentication == -1)
|
|
|
|
options->rsa_authentication = 1;
|
2001-05-04 04:14:23 +00:00
|
|
|
if (options->pubkey_authentication == -1)
|
|
|
|
options->pubkey_authentication = 1;
|
2002-03-18 10:09:43 +00:00
|
|
|
if (options->challenge_response_authentication == -1)
|
|
|
|
options->challenge_response_authentication = 1;
|
2004-01-07 11:16:27 +00:00
|
|
|
if (options->gss_authentication == -1)
|
2004-02-26 10:52:33 +00:00
|
|
|
options->gss_authentication = 0;
|
2004-01-07 11:16:27 +00:00
|
|
|
if (options->gss_deleg_creds == -1)
|
|
|
|
options->gss_deleg_creds = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->password_authentication == -1)
|
|
|
|
options->password_authentication = 1;
|
2000-12-05 02:55:12 +00:00
|
|
|
if (options->kbd_interactive_authentication == -1)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->kbd_interactive_authentication = 1;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->rhosts_rsa_authentication == -1)
|
2002-06-23 16:09:08 +00:00
|
|
|
options->rhosts_rsa_authentication = 0;
|
2001-05-04 04:14:23 +00:00
|
|
|
if (options->hostbased_authentication == -1)
|
|
|
|
options->hostbased_authentication = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->batch_mode == -1)
|
|
|
|
options->batch_mode = 0;
|
|
|
|
if (options->check_host_ip == -1)
|
2002-06-29 10:51:56 +00:00
|
|
|
options->check_host_ip = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->strict_host_key_checking == -1)
|
|
|
|
options->strict_host_key_checking = 2; /* 2 is default */
|
|
|
|
if (options->compression == -1)
|
|
|
|
options->compression = 0;
|
2004-02-26 10:52:33 +00:00
|
|
|
if (options->tcp_keep_alive == -1)
|
|
|
|
options->tcp_keep_alive = 1;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->compression_level == -1)
|
|
|
|
options->compression_level = 6;
|
|
|
|
if (options->port == -1)
|
|
|
|
options->port = 0; /* Filled in ssh_connect. */
|
2004-01-07 11:16:27 +00:00
|
|
|
if (options->address_family == -1)
|
|
|
|
options->address_family = AF_UNSPEC;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->connection_attempts == -1)
|
2002-03-18 10:09:43 +00:00
|
|
|
options->connection_attempts = 1;
|
2000-02-24 14:29:47 +00:00
|
|
|
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;
|
2000-05-15 05:24:25 +00:00
|
|
|
/* options->ciphers, default set in myproposals.h */
|
2001-05-04 04:14:23 +00:00
|
|
|
/* options->macs, default set in myproposals.h */
|
|
|
|
/* options->hostkeyalgorithms, default set in myproposals.h */
|
2000-05-15 05:24:25 +00:00
|
|
|
if (options->protocol == SSH_PROTO_UNKNOWN)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->protocol = SSH_PROTO_1|SSH_PROTO_2;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->num_identity_files == 0) {
|
2001-05-04 04:14:23 +00:00
|
|
|
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);
|
|
|
|
}
|
2000-05-15 05:24:25 +00:00
|
|
|
}
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->escape_char == -1)
|
|
|
|
options->escape_char = '~';
|
|
|
|
if (options->system_hostfile == NULL)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->system_hostfile = _PATH_SSH_SYSTEM_HOSTFILE;
|
2000-02-24 14:29:47 +00:00
|
|
|
if (options->user_hostfile == NULL)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->user_hostfile = _PATH_SSH_USER_HOSTFILE;
|
2000-05-15 05:24:25 +00:00
|
|
|
if (options->system_hostfile2 == NULL)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->system_hostfile2 = _PATH_SSH_SYSTEM_HOSTFILE2;
|
2000-05-15 05:24:25 +00:00
|
|
|
if (options->user_hostfile2 == NULL)
|
2001-05-04 04:14:23 +00:00
|
|
|
options->user_hostfile2 = _PATH_SSH_USER_HOSTFILE2;
|
2002-03-18 10:09:43 +00:00
|
|
|
if (options->log_level == SYSLOG_LEVEL_NOT_SET)
|
2000-02-24 14:29:47 +00:00
|
|
|
options->log_level = SYSLOG_LEVEL_INFO;
|
2002-03-18 10:09:43 +00:00
|
|
|
if (options->clear_forwardings == 1)
|
|
|
|
clear_forwardings(options);
|
|
|
|
if (options->no_host_authentication_for_localhost == - 1)
|
|
|
|
options->no_host_authentication_for_localhost = 0;
|
2004-04-20 09:46:41 +00:00
|
|
|
if (options->identities_only == -1)
|
|
|
|
options->identities_only = 0;
|
2003-04-23 17:13:13 +00:00
|
|
|
if (options->enable_ssh_keysign == -1)
|
|
|
|
options->enable_ssh_keysign = 0;
|
2004-01-07 11:16:27 +00:00
|
|
|
if (options->rekey_limit == -1)
|
|
|
|
options->rekey_limit = 0;
|
|
|
|
if (options->verify_host_key_dns == -1)
|
|
|
|
options->verify_host_key_dns = 0;
|
2004-02-26 10:52:33 +00:00
|
|
|
if (options->server_alive_interval == -1)
|
|
|
|
options->server_alive_interval = 0;
|
|
|
|
if (options->server_alive_count_max == -1)
|
|
|
|
options->server_alive_count_max = 3;
|
2004-10-28 16:11:31 +00:00
|
|
|
if (options->control_master == -1)
|
|
|
|
options->control_master = 0;
|
2005-06-05 15:46:09 +00:00
|
|
|
if (options->hash_known_hosts == -1)
|
|
|
|
options->hash_known_hosts = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
/* 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 */
|
2001-05-04 04:14:23 +00:00
|
|
|
/* options->host_key_alias should not be set by default */
|
|
|
|
/* options->preferred_authentications will be set in ssh */
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
2005-06-05 15:46:09 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* parse_forward
|
|
|
|
* parses a string containing a port forwarding specification of the form:
|
|
|
|
* [listenhost:]listenport:connecthost:connectport
|
|
|
|
* returns number of arguments parsed or zero on error
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
parse_forward(Forward *fwd, const char *fwdspec)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
char *p, *cp, *fwdarg[4];
|
|
|
|
|
|
|
|
memset(fwd, '\0', sizeof(*fwd));
|
|
|
|
|
|
|
|
cp = p = xstrdup(fwdspec);
|
|
|
|
|
|
|
|
/* skip leading spaces */
|
|
|
|
while (*cp && isspace(*cp))
|
|
|
|
cp++;
|
|
|
|
|
|
|
|
for (i = 0; i < 4; ++i)
|
|
|
|
if ((fwdarg[i] = hpdelim(&cp)) == NULL)
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* Check for trailing garbage in 4-arg case*/
|
|
|
|
if (cp != NULL)
|
|
|
|
i = 0; /* failure */
|
|
|
|
|
|
|
|
switch (i) {
|
|
|
|
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;
|
|
|
|
default:
|
|
|
|
i = 0; /* failure */
|
|
|
|
}
|
|
|
|
|
|
|
|
xfree(p);
|
|
|
|
|
|
|
|
if (fwd->listen_port == 0 && fwd->connect_port == 0)
|
|
|
|
goto fail_free;
|
|
|
|
|
|
|
|
if (fwd->connect_host != NULL &&
|
|
|
|
strlen(fwd->connect_host) >= NI_MAXHOST)
|
|
|
|
goto fail_free;
|
|
|
|
|
|
|
|
return (i);
|
|
|
|
|
|
|
|
fail_free:
|
|
|
|
if (fwd->connect_host != NULL)
|
|
|
|
xfree(fwd->connect_host);
|
|
|
|
if (fwd->listen_host != NULL)
|
|
|
|
xfree(fwd->listen_host);
|
|
|
|
return (0);
|
|
|
|
}
|