blob: 1fbf597936d84e8b795889aeec733c92ba50eb90 [file] [log] [blame]
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001/*
Damien Miller95def091999-11-25 00:26:21 +11002 * Author: Tatu Ylonen <ylo@cs.hut.fi>
Damien Miller95def091999-11-25 00:26:21 +11003 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
Damien Miller95def091999-11-25 00:26:21 +11005 * Functions for reading the configuration files.
Damien Miller4af51302000-04-16 11:18:38 +10006 *
Damien Millere4340be2000-09-16 13:29:08 +11007 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
Damien Miller95def091999-11-25 00:26:21 +110012 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100013
14#include "includes.h"
Damien Miller7b58e802005-12-13 19:33:19 +110015RCSID("$OpenBSD: readconf.c,v 1.145 2005/12/08 18:34:11 reyk Exp $");
Damien Millerd4a8b7e1999-10-27 13:42:43 +100016
17#include "ssh.h"
Damien Millerd4a8b7e1999-10-27 13:42:43 +100018#include "xmalloc.h"
Damien Miller78928792000-04-12 20:17:38 +100019#include "compat.h"
Ben Lindstrom226cfa02001-01-22 05:34:40 +000020#include "cipher.h"
21#include "pathnames.h"
22#include "log.h"
23#include "readconf.h"
24#include "match.h"
25#include "misc.h"
Ben Lindstrom06b33aa2001-02-15 03:01:59 +000026#include "kex.h"
27#include "mac.h"
Damien Millerd4a8b7e1999-10-27 13:42:43 +100028
29/* Format of the configuration file:
30
31 # Configuration data is parsed as follows:
32 # 1. command line options
33 # 2. user-specific file
34 # 3. system-wide file
35 # Any configuration value is only changed the first time it is set.
36 # Thus, host-specific definitions should be at the beginning of the
37 # configuration file, and defaults at the end.
38
39 # Host-specific declarations. These may override anything above. A single
40 # host may match multiple declarations; these are processed in the order
41 # that they are given in.
42
43 Host *.ngs.fi ngs.fi
Ben Lindstrom4daea862002-06-09 20:04:02 +000044 User foo
Damien Millerd4a8b7e1999-10-27 13:42:43 +100045
46 Host fake.com
47 HostName another.host.name.real.org
48 User blaah
49 Port 34289
50 ForwardX11 no
51 ForwardAgent no
52
53 Host books.com
54 RemoteForward 9999 shadows.cs.hut.fi:9999
55 Cipher 3des
56
57 Host fascist.blob.com
58 Port 23123
59 User tylonen
Damien Millerd4a8b7e1999-10-27 13:42:43 +100060 PasswordAuthentication no
61
62 Host puukko.hut.fi
63 User t35124p
64 ProxyCommand ssh-proxy %h %p
65
66 Host *.fr
Ben Lindstrom4daea862002-06-09 20:04:02 +000067 PublicKeyAuthentication no
Damien Millerd4a8b7e1999-10-27 13:42:43 +100068
69 Host *.su
70 Cipher none
71 PasswordAuthentication no
72
Damien Millerd27b9472005-12-13 19:29:02 +110073 Host vpn.fake.com
74 Tunnel yes
75 TunnelDevice 3
76
Damien Millerd4a8b7e1999-10-27 13:42:43 +100077 # Defaults for various options
78 Host *
79 ForwardAgent no
Damien Miller0bc1bd82000-11-13 22:57:25 +110080 ForwardX11 no
Damien Millerd4a8b7e1999-10-27 13:42:43 +100081 PasswordAuthentication yes
82 RSAAuthentication yes
83 RhostsRSAAuthentication yes
Damien Millerd4a8b7e1999-10-27 13:42:43 +100084 StrictHostKeyChecking yes
Damien Miller12c150e2003-12-17 16:31:10 +110085 TcpKeepAlive no
Damien Millerd4a8b7e1999-10-27 13:42:43 +100086 IdentityFile ~/.ssh/identity
87 Port 22
88 EscapeChar ~
89
90*/
91
92/* Keyword tokens. */
93
Damien Miller95def091999-11-25 00:26:21 +110094typedef enum {
95 oBadOption,
Darren Tucker0a118da2003-10-15 15:54:32 +100096 oForwardAgent, oForwardX11, oForwardX11Trusted, oGatewayPorts,
Ben Lindstromcb72e4f2002-06-21 00:41:51 +000097 oPasswordAuthentication, oRSAAuthentication,
Ben Lindstrom95fb2dd2001-01-23 03:12:10 +000098 oChallengeResponseAuthentication, oXAuthLocation,
Damien Miller95def091999-11-25 00:26:21 +110099 oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
100 oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
101 oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
102 oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
Damien Miller12c150e2003-12-17 16:31:10 +1100103 oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts,
Ben Lindstrom06b33aa2001-02-15 03:01:59 +0000104 oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs,
Damien Miller0bc1bd82000-11-13 22:57:25 +1100105 oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication,
Ben Lindstromb9be60a2001-03-11 01:49:19 +0000106 oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
Ben Lindstrom982dbbc2001-04-17 18:11:36 +0000107 oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000108 oHostKeyAlgorithms, oBindAddress, oSmartcardDevice,
Ben Lindstrom4daea862002-06-09 20:04:02 +0000109 oClearAllForwardings, oNoHostAuthenticationForLocalhost,
Damien Millerb78d5eb2003-05-16 11:39:04 +1000110 oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
Darren Tucker0efd1552003-08-26 11:49:55 +1000111 oAddressFamily, oGssAuthentication, oGssDelegateCreds,
Damien Millerbd394c32004-03-08 23:12:36 +1100112 oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
Damien Millere1776152005-03-01 21:47:37 +1100113 oSendEnv, oControlPath, oControlMaster, oHashKnownHosts,
Damien Millerd27b9472005-12-13 19:29:02 +1100114 oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
Damien Millerf9b3feb2003-05-16 11:38:32 +1000115 oDeprecated, oUnsupported
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000116} OpCodes;
117
118/* Textual representations of the tokens. */
119
Damien Miller95def091999-11-25 00:26:21 +1100120static struct {
121 const char *name;
122 OpCodes opcode;
123} keywords[] = {
124 { "forwardagent", oForwardAgent },
125 { "forwardx11", oForwardX11 },
Darren Tucker0a118da2003-10-15 15:54:32 +1000126 { "forwardx11trusted", oForwardX11Trusted },
Damien Millerd3a18572000-06-07 19:55:44 +1000127 { "xauthlocation", oXAuthLocation },
Damien Miller95def091999-11-25 00:26:21 +1100128 { "gatewayports", oGatewayPorts },
129 { "useprivilegedport", oUsePrivilegedPort },
Darren Tuckerec960f22003-08-13 20:37:05 +1000130 { "rhostsauthentication", oDeprecated },
Damien Miller95def091999-11-25 00:26:21 +1100131 { "passwordauthentication", oPasswordAuthentication },
Damien Miller874d77b2000-10-14 16:23:11 +1100132 { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
133 { "kbdinteractivedevices", oKbdInteractiveDevices },
Damien Miller95def091999-11-25 00:26:21 +1100134 { "rsaauthentication", oRSAAuthentication },
Damien Miller0bc1bd82000-11-13 22:57:25 +1100135 { "pubkeyauthentication", oPubkeyAuthentication },
Ben Lindstrom95fb2dd2001-01-23 03:12:10 +0000136 { "dsaauthentication", oPubkeyAuthentication }, /* alias */
Ben Lindstrom5eabda32001-04-12 23:34:34 +0000137 { "rhostsrsaauthentication", oRhostsRSAAuthentication },
Ben Lindstromd69dab32001-04-12 23:36:05 +0000138 { "hostbasedauthentication", oHostbasedAuthentication },
Ben Lindstrom95fb2dd2001-01-23 03:12:10 +0000139 { "challengeresponseauthentication", oChallengeResponseAuthentication },
140 { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
141 { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
Damien Millerf9b3feb2003-05-16 11:38:32 +1000142 { "kerberosauthentication", oUnsupported },
143 { "kerberostgtpassing", oUnsupported },
Damien Millerf9b3feb2003-05-16 11:38:32 +1000144 { "afstokenpassing", oUnsupported },
Darren Tucker0efd1552003-08-26 11:49:55 +1000145#if defined(GSSAPI)
146 { "gssapiauthentication", oGssAuthentication },
Darren Tucker0efd1552003-08-26 11:49:55 +1000147 { "gssapidelegatecredentials", oGssDelegateCreds },
148#else
149 { "gssapiauthentication", oUnsupported },
150 { "gssapidelegatecredentials", oUnsupported },
151#endif
Ben Lindstrom4daea862002-06-09 20:04:02 +0000152 { "fallbacktorsh", oDeprecated },
153 { "usersh", oDeprecated },
Damien Miller95def091999-11-25 00:26:21 +1100154 { "identityfile", oIdentityFile },
Damien Miller0bc1bd82000-11-13 22:57:25 +1100155 { "identityfile2", oIdentityFile }, /* alias */
Damien Millerbd394c32004-03-08 23:12:36 +1100156 { "identitiesonly", oIdentitiesOnly },
Damien Miller95def091999-11-25 00:26:21 +1100157 { "hostname", oHostName },
Ben Lindstrom4dccfa52000-12-28 16:40:05 +0000158 { "hostkeyalias", oHostKeyAlias },
Damien Miller95def091999-11-25 00:26:21 +1100159 { "proxycommand", oProxyCommand },
160 { "port", oPort },
161 { "cipher", oCipher },
Damien Miller78928792000-04-12 20:17:38 +1000162 { "ciphers", oCiphers },
Ben Lindstrom06b33aa2001-02-15 03:01:59 +0000163 { "macs", oMacs },
Damien Miller78928792000-04-12 20:17:38 +1000164 { "protocol", oProtocol },
Damien Miller95def091999-11-25 00:26:21 +1100165 { "remoteforward", oRemoteForward },
166 { "localforward", oLocalForward },
167 { "user", oUser },
168 { "host", oHost },
169 { "escapechar", oEscapeChar },
Damien Miller95def091999-11-25 00:26:21 +1100170 { "globalknownhostsfile", oGlobalKnownHostsFile },
Ben Lindstromd6481ea2001-06-25 04:37:41 +0000171 { "userknownhostsfile", oUserKnownHostsFile }, /* obsolete */
Damien Millereba71ba2000-04-29 23:57:08 +1000172 { "globalknownhostsfile2", oGlobalKnownHostsFile2 },
Ben Lindstromd6481ea2001-06-25 04:37:41 +0000173 { "userknownhostsfile2", oUserKnownHostsFile2 }, /* obsolete */
Damien Miller95def091999-11-25 00:26:21 +1100174 { "connectionattempts", oConnectionAttempts },
175 { "batchmode", oBatchMode },
176 { "checkhostip", oCheckHostIP },
177 { "stricthostkeychecking", oStrictHostKeyChecking },
178 { "compression", oCompression },
179 { "compressionlevel", oCompressionLevel },
Damien Miller12c150e2003-12-17 16:31:10 +1100180 { "tcpkeepalive", oTCPKeepAlive },
181 { "keepalive", oTCPKeepAlive }, /* obsolete */
Damien Miller95def091999-11-25 00:26:21 +1100182 { "numberofpasswordprompts", oNumberOfPasswordPrompts },
Damien Miller95def091999-11-25 00:26:21 +1100183 { "loglevel", oLogLevel },
Ben Lindstrom3bb4f9d2001-04-08 18:30:26 +0000184 { "dynamicforward", oDynamicForward },
Ben Lindstromb9be60a2001-03-11 01:49:19 +0000185 { "preferredauthentications", oPreferredAuthentications },
Ben Lindstrom982dbbc2001-04-17 18:11:36 +0000186 { "hostkeyalgorithms", oHostKeyAlgorithms },
Ben Lindstrome0f88042001-04-30 13:06:24 +0000187 { "bindaddress", oBindAddress },
Damien Millerf9b3feb2003-05-16 11:38:32 +1000188#ifdef SMARTCARD
Ben Lindstromae996bf2001-08-06 21:27:53 +0000189 { "smartcarddevice", oSmartcardDevice },
Damien Millerf9b3feb2003-05-16 11:38:32 +1000190#else
191 { "smartcarddevice", oUnsupported },
192#endif
Damien Miller9f0f5c62001-12-21 14:45:46 +1100193 { "clearallforwardings", oClearAllForwardings },
Ben Lindstromb6df73b2002-11-09 15:52:31 +0000194 { "enablesshkeysign", oEnableSSHKeysign },
Damien Miller37876e92003-05-15 10:19:46 +1000195 { "verifyhostkeydns", oVerifyHostKeyDNS },
Damien Miller9f0f5c62001-12-21 14:45:46 +1100196 { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
Damien Millera5539d22003-04-09 20:50:06 +1000197 { "rekeylimit", oRekeyLimit },
Damien Millerb78d5eb2003-05-16 11:39:04 +1000198 { "connecttimeout", oConnectTimeout },
Damien Miller20a8f972003-05-18 20:50:30 +1000199 { "addressfamily", oAddressFamily },
Damien Miller509b0102003-12-17 16:33:10 +1100200 { "serveraliveinterval", oServerAliveInterval },
201 { "serveralivecountmax", oServerAliveCountMax },
Darren Tucker46bc0752004-05-02 22:11:30 +1000202 { "sendenv", oSendEnv },
Damien Miller0e220db2004-06-15 10:34:08 +1000203 { "controlpath", oControlPath },
204 { "controlmaster", oControlMaster },
Damien Millere1776152005-03-01 21:47:37 +1100205 { "hashknownhosts", oHashKnownHosts },
Damien Millerd27b9472005-12-13 19:29:02 +1100206 { "tunnel", oTunnel },
207 { "tunneldevice", oTunnelDevice },
208 { "localcommand", oLocalCommand },
209 { "permitlocalcommand", oPermitLocalCommand },
Ben Lindstrom65366a82001-12-06 16:32:47 +0000210 { NULL, oBadOption }
Damien Miller5ce662a1999-11-11 17:57:39 +1100211};
212
Damien Miller5428f641999-11-25 11:54:57 +1100213/*
214 * Adds a local TCP/IP port forward to options. Never returns if there is an
215 * error.
216 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000217
Damien Miller4af51302000-04-16 11:18:38 +1000218void
Damien Millerf91ee4c2005-03-01 21:24:33 +1100219add_local_forward(Options *options, const Forward *newfwd)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000220{
Damien Miller95def091999-11-25 00:26:21 +1100221 Forward *fwd;
Ben Lindstrom99a4e142002-07-09 14:06:40 +0000222#ifndef NO_IPPORT_RESERVED_CONCEPT
Damien Miller95def091999-11-25 00:26:21 +1100223 extern uid_t original_real_uid;
Damien Millerf91ee4c2005-03-01 21:24:33 +1100224 if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0)
Ben Lindstrom6df8ef42001-03-05 07:47:23 +0000225 fatal("Privileged ports can only be forwarded by root.");
Damien Millerbac2d8a2000-09-05 16:13:06 +1100226#endif
Damien Miller95def091999-11-25 00:26:21 +1100227 if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
228 fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION);
229 fwd = &options->local_forwards[options->num_local_forwards++];
Damien Millerf91ee4c2005-03-01 21:24:33 +1100230
231 fwd->listen_host = (newfwd->listen_host == NULL) ?
232 NULL : xstrdup(newfwd->listen_host);
233 fwd->listen_port = newfwd->listen_port;
234 fwd->connect_host = xstrdup(newfwd->connect_host);
235 fwd->connect_port = newfwd->connect_port;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000236}
237
Damien Miller5428f641999-11-25 11:54:57 +1100238/*
239 * Adds a remote TCP/IP port forward to options. Never returns if there is
240 * an error.
241 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000242
Damien Miller4af51302000-04-16 11:18:38 +1000243void
Damien Millerf91ee4c2005-03-01 21:24:33 +1100244add_remote_forward(Options *options, const Forward *newfwd)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000245{
Damien Miller95def091999-11-25 00:26:21 +1100246 Forward *fwd;
247 if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION)
248 fatal("Too many remote forwards (max %d).",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100249 SSH_MAX_FORWARDS_PER_DIRECTION);
Damien Miller95def091999-11-25 00:26:21 +1100250 fwd = &options->remote_forwards[options->num_remote_forwards++];
Damien Millerf91ee4c2005-03-01 21:24:33 +1100251
252 fwd->listen_host = (newfwd->listen_host == NULL) ?
253 NULL : xstrdup(newfwd->listen_host);
254 fwd->listen_port = newfwd->listen_port;
255 fwd->connect_host = xstrdup(newfwd->connect_host);
256 fwd->connect_port = newfwd->connect_port;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000257}
258
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000259static void
260clear_forwardings(Options *options)
261{
262 int i;
263
Damien Millerf91ee4c2005-03-01 21:24:33 +1100264 for (i = 0; i < options->num_local_forwards; i++) {
Darren Tucker1d55ca72005-03-14 22:58:40 +1100265 if (options->local_forwards[i].listen_host != NULL)
266 xfree(options->local_forwards[i].listen_host);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100267 xfree(options->local_forwards[i].connect_host);
268 }
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000269 options->num_local_forwards = 0;
Damien Millerf91ee4c2005-03-01 21:24:33 +1100270 for (i = 0; i < options->num_remote_forwards; i++) {
Darren Tucker1d55ca72005-03-14 22:58:40 +1100271 if (options->remote_forwards[i].listen_host != NULL)
272 xfree(options->remote_forwards[i].listen_host);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100273 xfree(options->remote_forwards[i].connect_host);
274 }
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000275 options->num_remote_forwards = 0;
Damien Miller7b58e802005-12-13 19:33:19 +1100276 options->tun_open = SSH_TUNMODE_NO;
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000277}
278
Damien Miller5428f641999-11-25 11:54:57 +1100279/*
Ben Lindstrom3704c262001-04-02 18:20:03 +0000280 * Returns the number of the token pointed to by cp or oBadOption.
Damien Miller5428f641999-11-25 11:54:57 +1100281 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000282
Damien Miller4af51302000-04-16 11:18:38 +1000283static OpCodes
Damien Miller95def091999-11-25 00:26:21 +1100284parse_token(const char *cp, const char *filename, int linenum)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000285{
Ben Lindstrom46c16222000-12-22 01:43:59 +0000286 u_int i;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000287
Damien Miller95def091999-11-25 00:26:21 +1100288 for (i = 0; keywords[i].name; i++)
Damien Miller5428f641999-11-25 11:54:57 +1100289 if (strcasecmp(cp, keywords[i].name) == 0)
Damien Miller95def091999-11-25 00:26:21 +1100290 return keywords[i].opcode;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000291
Ben Lindstromb5cdc662001-04-16 02:13:26 +0000292 error("%s: line %d: Bad configuration option: %s",
293 filename, linenum, cp);
Damien Miller95def091999-11-25 00:26:21 +1100294 return oBadOption;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000295}
296
Damien Miller5428f641999-11-25 11:54:57 +1100297/*
298 * Processes a single option line as used in the configuration files. This
299 * only sets those values that have not already been set.
300 */
Damien Miller61f08ac2003-02-24 11:56:27 +1100301#define WHITESPACE " \t\r\n"
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000302
Damien Miller2ccf6611999-11-15 15:25:10 +1100303int
304process_config_line(Options *options, const char *host,
Damien Miller95def091999-11-25 00:26:21 +1100305 char *line, const char *filename, int linenum,
306 int *activep)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000307{
Damien Millerf91ee4c2005-03-01 21:24:33 +1100308 char *s, **charptr, *endofnumber, *keyword, *arg, *arg2, fwdarg[256];
Damien Millerd27b9472005-12-13 19:29:02 +1100309 int opcode, *intptr, value, value2;
Damien Miller61f08ac2003-02-24 11:56:27 +1100310 size_t len;
Damien Millerf91ee4c2005-03-01 21:24:33 +1100311 Forward fwd;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000312
Damien Millerc652cac2003-05-14 13:40:54 +1000313 /* Strip trailing whitespace */
Darren Tucker47eede72005-03-14 23:08:12 +1100314 for (len = strlen(line) - 1; len > 0; len--) {
Damien Millerc652cac2003-05-14 13:40:54 +1000315 if (strchr(WHITESPACE, line[len]) == NULL)
316 break;
317 line[len] = '\0';
318 }
319
Damien Millerbe484b52000-07-15 14:14:16 +1000320 s = line;
321 /* Get the keyword. (Each line is supposed to begin with a keyword). */
322 keyword = strdelim(&s);
323 /* Ignore leading whitespace. */
324 if (*keyword == '\0')
325 keyword = strdelim(&s);
Ben Lindstrom226cfa02001-01-22 05:34:40 +0000326 if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
Damien Miller95def091999-11-25 00:26:21 +1100327 return 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000328
Damien Miller37023962000-07-11 17:31:38 +1000329 opcode = parse_token(keyword, filename, linenum);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000330
Damien Miller95def091999-11-25 00:26:21 +1100331 switch (opcode) {
332 case oBadOption:
Damien Miller5428f641999-11-25 11:54:57 +1100333 /* don't panic, but count bad options */
334 return -1;
Damien Miller95def091999-11-25 00:26:21 +1100335 /* NOTREACHED */
Damien Millerb78d5eb2003-05-16 11:39:04 +1000336 case oConnectTimeout:
337 intptr = &options->connection_timeout;
Damien Miller509b0102003-12-17 16:33:10 +1100338parse_time:
Damien Millerb78d5eb2003-05-16 11:39:04 +1000339 arg = strdelim(&s);
340 if (!arg || *arg == '\0')
341 fatal("%s line %d: missing time value.",
342 filename, linenum);
343 if ((value = convtime(arg)) == -1)
344 fatal("%s line %d: invalid time value.",
345 filename, linenum);
346 if (*intptr == -1)
347 *intptr = value;
348 break;
349
Damien Miller95def091999-11-25 00:26:21 +1100350 case oForwardAgent:
351 intptr = &options->forward_agent;
352parse_flag:
Damien Millerbe484b52000-07-15 14:14:16 +1000353 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000354 if (!arg || *arg == '\0')
Damien Miller95def091999-11-25 00:26:21 +1100355 fatal("%.200s line %d: Missing yes/no argument.", filename, linenum);
356 value = 0; /* To avoid compiler warning... */
Damien Miller37023962000-07-11 17:31:38 +1000357 if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
Damien Miller95def091999-11-25 00:26:21 +1100358 value = 1;
Damien Miller37023962000-07-11 17:31:38 +1000359 else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
Damien Miller95def091999-11-25 00:26:21 +1100360 value = 0;
361 else
362 fatal("%.200s line %d: Bad yes/no argument.", filename, linenum);
363 if (*activep && *intptr == -1)
364 *intptr = value;
365 break;
366
367 case oForwardX11:
368 intptr = &options->forward_x11;
369 goto parse_flag;
370
Darren Tucker0a118da2003-10-15 15:54:32 +1000371 case oForwardX11Trusted:
372 intptr = &options->forward_x11_trusted;
373 goto parse_flag;
374
Damien Miller95def091999-11-25 00:26:21 +1100375 case oGatewayPorts:
376 intptr = &options->gateway_ports;
377 goto parse_flag;
378
379 case oUsePrivilegedPort:
380 intptr = &options->use_privileged_port;
381 goto parse_flag;
382
Damien Miller95def091999-11-25 00:26:21 +1100383 case oPasswordAuthentication:
384 intptr = &options->password_authentication;
385 goto parse_flag;
386
Damien Miller874d77b2000-10-14 16:23:11 +1100387 case oKbdInteractiveAuthentication:
388 intptr = &options->kbd_interactive_authentication;
389 goto parse_flag;
390
391 case oKbdInteractiveDevices:
392 charptr = &options->kbd_interactive_devices;
393 goto parse_string;
394
Damien Miller0bc1bd82000-11-13 22:57:25 +1100395 case oPubkeyAuthentication:
396 intptr = &options->pubkey_authentication;
Damien Millere247cc42000-05-07 12:03:14 +1000397 goto parse_flag;
398
Damien Miller95def091999-11-25 00:26:21 +1100399 case oRSAAuthentication:
400 intptr = &options->rsa_authentication;
401 goto parse_flag;
402
403 case oRhostsRSAAuthentication:
404 intptr = &options->rhosts_rsa_authentication;
405 goto parse_flag;
406
Ben Lindstrom5eabda32001-04-12 23:34:34 +0000407 case oHostbasedAuthentication:
408 intptr = &options->hostbased_authentication;
409 goto parse_flag;
410
Ben Lindstrom95fb2dd2001-01-23 03:12:10 +0000411 case oChallengeResponseAuthentication:
Ben Lindstrom551ea372001-06-05 18:56:16 +0000412 intptr = &options->challenge_response_authentication;
Damien Miller95def091999-11-25 00:26:21 +1100413 goto parse_flag;
Damien Miller2aa0ab42003-05-15 12:05:28 +1000414
Darren Tucker0efd1552003-08-26 11:49:55 +1000415 case oGssAuthentication:
416 intptr = &options->gss_authentication;
417 goto parse_flag;
418
419 case oGssDelegateCreds:
420 intptr = &options->gss_deleg_creds;
421 goto parse_flag;
422
Damien Miller95def091999-11-25 00:26:21 +1100423 case oBatchMode:
424 intptr = &options->batch_mode;
425 goto parse_flag;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000426
Damien Miller95def091999-11-25 00:26:21 +1100427 case oCheckHostIP:
428 intptr = &options->check_host_ip;
429 goto parse_flag;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000430
Damien Miller37876e92003-05-15 10:19:46 +1000431 case oVerifyHostKeyDNS:
432 intptr = &options->verify_host_key_dns;
Damien Miller150b5572003-11-17 21:19:29 +1100433 goto parse_yesnoask;
Damien Miller37876e92003-05-15 10:19:46 +1000434
Damien Miller95def091999-11-25 00:26:21 +1100435 case oStrictHostKeyChecking:
436 intptr = &options->strict_host_key_checking;
Damien Miller150b5572003-11-17 21:19:29 +1100437parse_yesnoask:
Damien Millerbe484b52000-07-15 14:14:16 +1000438 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000439 if (!arg || *arg == '\0')
Ben Lindstrom5ed8acd2001-01-29 08:00:54 +0000440 fatal("%.200s line %d: Missing yes/no/ask argument.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100441 filename, linenum);
Damien Miller95def091999-11-25 00:26:21 +1100442 value = 0; /* To avoid compiler warning... */
Damien Miller37023962000-07-11 17:31:38 +1000443 if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
Damien Miller95def091999-11-25 00:26:21 +1100444 value = 1;
Damien Miller37023962000-07-11 17:31:38 +1000445 else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
Damien Miller95def091999-11-25 00:26:21 +1100446 value = 0;
Damien Miller37023962000-07-11 17:31:38 +1000447 else if (strcmp(arg, "ask") == 0)
Damien Miller95def091999-11-25 00:26:21 +1100448 value = 2;
449 else
450 fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum);
451 if (*activep && *intptr == -1)
452 *intptr = value;
453 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000454
Damien Miller95def091999-11-25 00:26:21 +1100455 case oCompression:
456 intptr = &options->compression;
457 goto parse_flag;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000458
Damien Miller12c150e2003-12-17 16:31:10 +1100459 case oTCPKeepAlive:
460 intptr = &options->tcp_keep_alive;
Damien Miller95def091999-11-25 00:26:21 +1100461 goto parse_flag;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000462
Ben Lindstrom3cecc9a2001-10-03 17:39:38 +0000463 case oNoHostAuthenticationForLocalhost:
464 intptr = &options->no_host_authentication_for_localhost;
465 goto parse_flag;
466
Damien Miller95def091999-11-25 00:26:21 +1100467 case oNumberOfPasswordPrompts:
468 intptr = &options->number_of_password_prompts;
469 goto parse_int;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000470
Damien Miller95def091999-11-25 00:26:21 +1100471 case oCompressionLevel:
472 intptr = &options->compression_level;
473 goto parse_int;
474
Damien Millera5539d22003-04-09 20:50:06 +1000475 case oRekeyLimit:
476 intptr = &options->rekey_limit;
477 arg = strdelim(&s);
478 if (!arg || *arg == '\0')
479 fatal("%.200s line %d: Missing argument.", filename, linenum);
480 if (arg[0] < '0' || arg[0] > '9')
481 fatal("%.200s line %d: Bad number.", filename, linenum);
482 value = strtol(arg, &endofnumber, 10);
483 if (arg == endofnumber)
484 fatal("%.200s line %d: Bad number.", filename, linenum);
485 switch (toupper(*endofnumber)) {
486 case 'K':
487 value *= 1<<10;
488 break;
489 case 'M':
490 value *= 1<<20;
491 break;
492 case 'G':
493 value *= 1<<30;
494 break;
495 }
496 if (*activep && *intptr == -1)
497 *intptr = value;
498 break;
499
Damien Miller95def091999-11-25 00:26:21 +1100500 case oIdentityFile:
Damien Millerbe484b52000-07-15 14:14:16 +1000501 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000502 if (!arg || *arg == '\0')
Damien Miller95def091999-11-25 00:26:21 +1100503 fatal("%.200s line %d: Missing argument.", filename, linenum);
504 if (*activep) {
Damien Miller0bc1bd82000-11-13 22:57:25 +1100505 intptr = &options->num_identity_files;
Damien Millereba71ba2000-04-29 23:57:08 +1000506 if (*intptr >= SSH_MAX_IDENTITY_FILES)
Damien Miller95def091999-11-25 00:26:21 +1100507 fatal("%.200s line %d: Too many identity files specified (max %d).",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100508 filename, linenum, SSH_MAX_IDENTITY_FILES);
Damien Miller0bc1bd82000-11-13 22:57:25 +1100509 charptr = &options->identity_files[*intptr];
Damien Miller37023962000-07-11 17:31:38 +1000510 *charptr = xstrdup(arg);
Damien Millereba71ba2000-04-29 23:57:08 +1000511 *intptr = *intptr + 1;
Damien Miller95def091999-11-25 00:26:21 +1100512 }
513 break;
514
Damien Millerd3a18572000-06-07 19:55:44 +1000515 case oXAuthLocation:
516 charptr=&options->xauth_location;
517 goto parse_string;
518
Damien Miller95def091999-11-25 00:26:21 +1100519 case oUser:
520 charptr = &options->user;
521parse_string:
Damien Millerbe484b52000-07-15 14:14:16 +1000522 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000523 if (!arg || *arg == '\0')
Damien Miller95def091999-11-25 00:26:21 +1100524 fatal("%.200s line %d: Missing argument.", filename, linenum);
525 if (*activep && *charptr == NULL)
Damien Miller37023962000-07-11 17:31:38 +1000526 *charptr = xstrdup(arg);
Damien Miller95def091999-11-25 00:26:21 +1100527 break;
528
529 case oGlobalKnownHostsFile:
530 charptr = &options->system_hostfile;
531 goto parse_string;
532
533 case oUserKnownHostsFile:
534 charptr = &options->user_hostfile;
535 goto parse_string;
536
Damien Millereba71ba2000-04-29 23:57:08 +1000537 case oGlobalKnownHostsFile2:
538 charptr = &options->system_hostfile2;
539 goto parse_string;
540
541 case oUserKnownHostsFile2:
542 charptr = &options->user_hostfile2;
543 goto parse_string;
544
Damien Miller95def091999-11-25 00:26:21 +1100545 case oHostName:
546 charptr = &options->hostname;
547 goto parse_string;
548
Ben Lindstrom4dccfa52000-12-28 16:40:05 +0000549 case oHostKeyAlias:
550 charptr = &options->host_key_alias;
551 goto parse_string;
552
Ben Lindstromb9be60a2001-03-11 01:49:19 +0000553 case oPreferredAuthentications:
554 charptr = &options->preferred_authentications;
555 goto parse_string;
556
Ben Lindstrome0f88042001-04-30 13:06:24 +0000557 case oBindAddress:
558 charptr = &options->bind_address;
559 goto parse_string;
560
Ben Lindstromae996bf2001-08-06 21:27:53 +0000561 case oSmartcardDevice:
Ben Lindstromf7db3bb2001-08-06 21:35:51 +0000562 charptr = &options->smartcard_device;
563 goto parse_string;
Ben Lindstromae996bf2001-08-06 21:27:53 +0000564
Damien Miller95def091999-11-25 00:26:21 +1100565 case oProxyCommand:
Damien Millerd27b9472005-12-13 19:29:02 +1100566 charptr = &options->proxy_command;
567parse_command:
Darren Tuckera99c1b72003-06-28 12:40:12 +1000568 if (s == NULL)
569 fatal("%.200s line %d: Missing argument.", filename, linenum);
Damien Miller61f08ac2003-02-24 11:56:27 +1100570 len = strspn(s, WHITESPACE "=");
Damien Miller95def091999-11-25 00:26:21 +1100571 if (*activep && *charptr == NULL)
Damien Miller61f08ac2003-02-24 11:56:27 +1100572 *charptr = xstrdup(s + len);
Damien Miller95def091999-11-25 00:26:21 +1100573 return 0;
574
575 case oPort:
576 intptr = &options->port;
577parse_int:
Damien Millerbe484b52000-07-15 14:14:16 +1000578 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000579 if (!arg || *arg == '\0')
Damien Miller95def091999-11-25 00:26:21 +1100580 fatal("%.200s line %d: Missing argument.", filename, linenum);
Damien Miller37023962000-07-11 17:31:38 +1000581 if (arg[0] < '0' || arg[0] > '9')
Damien Miller95def091999-11-25 00:26:21 +1100582 fatal("%.200s line %d: Bad number.", filename, linenum);
Damien Miller5428f641999-11-25 11:54:57 +1100583
584 /* Octal, decimal, or hex format? */
Damien Miller37023962000-07-11 17:31:38 +1000585 value = strtol(arg, &endofnumber, 0);
586 if (arg == endofnumber)
Damien Miller5428f641999-11-25 11:54:57 +1100587 fatal("%.200s line %d: Bad number.", filename, linenum);
Damien Miller95def091999-11-25 00:26:21 +1100588 if (*activep && *intptr == -1)
589 *intptr = value;
590 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000591
Damien Miller95def091999-11-25 00:26:21 +1100592 case oConnectionAttempts:
593 intptr = &options->connection_attempts;
594 goto parse_int;
Damien Miller5ce662a1999-11-11 17:57:39 +1100595
Damien Miller95def091999-11-25 00:26:21 +1100596 case oCipher:
597 intptr = &options->cipher;
Damien Millerbe484b52000-07-15 14:14:16 +1000598 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000599 if (!arg || *arg == '\0')
Damien Millerb1715dc2000-05-30 13:44:51 +1000600 fatal("%.200s line %d: Missing argument.", filename, linenum);
Damien Miller37023962000-07-11 17:31:38 +1000601 value = cipher_number(arg);
Damien Miller95def091999-11-25 00:26:21 +1100602 if (value == -1)
603 fatal("%.200s line %d: Bad cipher '%s'.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100604 filename, linenum, arg ? arg : "<NONE>");
Damien Miller95def091999-11-25 00:26:21 +1100605 if (*activep && *intptr == -1)
606 *intptr = value;
607 break;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000608
Damien Miller78928792000-04-12 20:17:38 +1000609 case oCiphers:
Damien Millerbe484b52000-07-15 14:14:16 +1000610 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000611 if (!arg || *arg == '\0')
Damien Millerb1715dc2000-05-30 13:44:51 +1000612 fatal("%.200s line %d: Missing argument.", filename, linenum);
Damien Miller37023962000-07-11 17:31:38 +1000613 if (!ciphers_valid(arg))
Damien Miller30c3d422000-05-09 11:02:59 +1000614 fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100615 filename, linenum, arg ? arg : "<NONE>");
Damien Miller78928792000-04-12 20:17:38 +1000616 if (*activep && options->ciphers == NULL)
Damien Miller37023962000-07-11 17:31:38 +1000617 options->ciphers = xstrdup(arg);
Damien Miller78928792000-04-12 20:17:38 +1000618 break;
619
Ben Lindstrom06b33aa2001-02-15 03:01:59 +0000620 case oMacs:
621 arg = strdelim(&s);
622 if (!arg || *arg == '\0')
623 fatal("%.200s line %d: Missing argument.", filename, linenum);
624 if (!mac_valid(arg))
625 fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100626 filename, linenum, arg ? arg : "<NONE>");
Ben Lindstrom06b33aa2001-02-15 03:01:59 +0000627 if (*activep && options->macs == NULL)
628 options->macs = xstrdup(arg);
629 break;
630
Ben Lindstrom982dbbc2001-04-17 18:11:36 +0000631 case oHostKeyAlgorithms:
632 arg = strdelim(&s);
633 if (!arg || *arg == '\0')
634 fatal("%.200s line %d: Missing argument.", filename, linenum);
635 if (!key_names_valid2(arg))
636 fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100637 filename, linenum, arg ? arg : "<NONE>");
Ben Lindstrom982dbbc2001-04-17 18:11:36 +0000638 if (*activep && options->hostkeyalgorithms == NULL)
639 options->hostkeyalgorithms = xstrdup(arg);
640 break;
641
Damien Miller78928792000-04-12 20:17:38 +1000642 case oProtocol:
643 intptr = &options->protocol;
Damien Millerbe484b52000-07-15 14:14:16 +1000644 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000645 if (!arg || *arg == '\0')
Damien Millerb1715dc2000-05-30 13:44:51 +1000646 fatal("%.200s line %d: Missing argument.", filename, linenum);
Damien Miller37023962000-07-11 17:31:38 +1000647 value = proto_spec(arg);
Damien Miller78928792000-04-12 20:17:38 +1000648 if (value == SSH_PROTO_UNKNOWN)
649 fatal("%.200s line %d: Bad protocol spec '%s'.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100650 filename, linenum, arg ? arg : "<NONE>");
Damien Miller78928792000-04-12 20:17:38 +1000651 if (*activep && *intptr == SSH_PROTO_UNKNOWN)
652 *intptr = value;
653 break;
654
Damien Miller95def091999-11-25 00:26:21 +1100655 case oLogLevel:
656 intptr = (int *) &options->log_level;
Damien Millerbe484b52000-07-15 14:14:16 +1000657 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000658 value = log_level_number(arg);
Damien Millerfcd93202002-02-05 12:26:34 +1100659 if (value == SYSLOG_LEVEL_NOT_SET)
Ben Lindstrom6df8ef42001-03-05 07:47:23 +0000660 fatal("%.200s line %d: unsupported log level '%s'",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100661 filename, linenum, arg ? arg : "<NONE>");
Damien Millerfcd93202002-02-05 12:26:34 +1100662 if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET)
Damien Miller95def091999-11-25 00:26:21 +1100663 *intptr = (LogLevel) value;
664 break;
665
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000666 case oLocalForward:
Damien Miller95def091999-11-25 00:26:21 +1100667 case oRemoteForward:
Damien Millerbe484b52000-07-15 14:14:16 +1000668 arg = strdelim(&s);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100669 if (arg == NULL || *arg == '\0')
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000670 fatal("%.200s line %d: Missing port argument.",
671 filename, linenum);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100672 arg2 = strdelim(&s);
673 if (arg2 == NULL || *arg2 == '\0')
674 fatal("%.200s line %d: Missing target argument.",
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000675 filename, linenum);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100676
677 /* construct a string for parse_forward */
678 snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
679
680 if (parse_forward(&fwd, fwdarg) == 0)
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000681 fatal("%.200s line %d: Bad forwarding specification.",
682 filename, linenum);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100683
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000684 if (*activep) {
685 if (opcode == oLocalForward)
Damien Millerf91ee4c2005-03-01 21:24:33 +1100686 add_local_forward(options, &fwd);
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000687 else if (opcode == oRemoteForward)
Damien Millerf91ee4c2005-03-01 21:24:33 +1100688 add_remote_forward(options, &fwd);
Ben Lindstrom62c25a42001-09-12 18:01:59 +0000689 }
Damien Miller95def091999-11-25 00:26:21 +1100690 break;
691
Ben Lindstrom3bb4f9d2001-04-08 18:30:26 +0000692 case oDynamicForward:
693 arg = strdelim(&s);
694 if (!arg || *arg == '\0')
695 fatal("%.200s line %d: Missing port argument.",
696 filename, linenum);
Damien Millerf91ee4c2005-03-01 21:24:33 +1100697 memset(&fwd, '\0', sizeof(fwd));
698 fwd.connect_host = "socks";
699 fwd.listen_host = hpdelim(&arg);
700 if (fwd.listen_host == NULL ||
701 strlen(fwd.listen_host) >= NI_MAXHOST)
702 fatal("%.200s line %d: Bad forwarding specification.",
703 filename, linenum);
704 if (arg) {
705 fwd.listen_port = a2port(arg);
706 fwd.listen_host = cleanhostname(fwd.listen_host);
707 } else {
708 fwd.listen_port = a2port(fwd.listen_host);
Damien Miller43f6db62005-08-12 22:11:18 +1000709 fwd.listen_host = NULL;
Damien Millerf91ee4c2005-03-01 21:24:33 +1100710 }
711 if (fwd.listen_port == 0)
Ben Lindstrom3bb4f9d2001-04-08 18:30:26 +0000712 fatal("%.200s line %d: Badly formatted port number.",
713 filename, linenum);
Ben Lindstrom525a0932001-09-12 17:35:27 +0000714 if (*activep)
Damien Millerf91ee4c2005-03-01 21:24:33 +1100715 add_local_forward(options, &fwd);
Ben Lindstrom5eabda32001-04-12 23:34:34 +0000716 break;
Ben Lindstrom3bb4f9d2001-04-08 18:30:26 +0000717
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +0000718 case oClearAllForwardings:
719 intptr = &options->clear_forwardings;
720 goto parse_flag;
721
Damien Miller95def091999-11-25 00:26:21 +1100722 case oHost:
723 *activep = 0;
Damien Millerbe484b52000-07-15 14:14:16 +1000724 while ((arg = strdelim(&s)) != NULL && *arg != '\0')
Damien Miller37023962000-07-11 17:31:38 +1000725 if (match_pattern(host, arg)) {
726 debug("Applying options for %.100s", arg);
Damien Miller95def091999-11-25 00:26:21 +1100727 *activep = 1;
728 break;
729 }
Damien Millerbe484b52000-07-15 14:14:16 +1000730 /* Avoid garbage check below, as strdelim is done. */
Damien Miller95def091999-11-25 00:26:21 +1100731 return 0;
732
733 case oEscapeChar:
734 intptr = &options->escape_char;
Damien Millerbe484b52000-07-15 14:14:16 +1000735 arg = strdelim(&s);
Damien Miller37023962000-07-11 17:31:38 +1000736 if (!arg || *arg == '\0')
Damien Miller95def091999-11-25 00:26:21 +1100737 fatal("%.200s line %d: Missing argument.", filename, linenum);
Damien Miller37023962000-07-11 17:31:38 +1000738 if (arg[0] == '^' && arg[2] == 0 &&
Ben Lindstrom46c16222000-12-22 01:43:59 +0000739 (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
740 value = (u_char) arg[1] & 31;
Damien Miller37023962000-07-11 17:31:38 +1000741 else if (strlen(arg) == 1)
Ben Lindstrom46c16222000-12-22 01:43:59 +0000742 value = (u_char) arg[0];
Damien Miller37023962000-07-11 17:31:38 +1000743 else if (strcmp(arg, "none") == 0)
Ben Lindstrom2b1f71b2001-06-05 20:32:21 +0000744 value = SSH_ESCAPECHAR_NONE;
Damien Miller95def091999-11-25 00:26:21 +1100745 else {
746 fatal("%.200s line %d: Bad escape character.",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100747 filename, linenum);
Damien Miller95def091999-11-25 00:26:21 +1100748 /* NOTREACHED */
749 value = 0; /* Avoid compiler warning. */
750 }
751 if (*activep && *intptr == -1)
752 *intptr = value;
753 break;
754
Damien Miller20a8f972003-05-18 20:50:30 +1000755 case oAddressFamily:
756 arg = strdelim(&s);
Damien Miller17b23d82005-05-26 12:11:56 +1000757 if (!arg || *arg == '\0')
758 fatal("%s line %d: missing address family.",
759 filename, linenum);
Darren Tucker0a4f04b2003-07-03 20:37:47 +1000760 intptr = &options->address_family;
Damien Miller20a8f972003-05-18 20:50:30 +1000761 if (strcasecmp(arg, "inet") == 0)
Darren Tucker0a4f04b2003-07-03 20:37:47 +1000762 value = AF_INET;
Damien Miller20a8f972003-05-18 20:50:30 +1000763 else if (strcasecmp(arg, "inet6") == 0)
Darren Tucker0a4f04b2003-07-03 20:37:47 +1000764 value = AF_INET6;
Damien Miller20a8f972003-05-18 20:50:30 +1000765 else if (strcasecmp(arg, "any") == 0)
Darren Tucker0a4f04b2003-07-03 20:37:47 +1000766 value = AF_UNSPEC;
Damien Miller20a8f972003-05-18 20:50:30 +1000767 else
768 fatal("Unsupported AddressFamily \"%s\"", arg);
Darren Tucker0a4f04b2003-07-03 20:37:47 +1000769 if (*activep && *intptr == -1)
770 *intptr = value;
Damien Miller20a8f972003-05-18 20:50:30 +1000771 break;
772
Ben Lindstromb6df73b2002-11-09 15:52:31 +0000773 case oEnableSSHKeysign:
774 intptr = &options->enable_ssh_keysign;
775 goto parse_flag;
776
Damien Millerbd394c32004-03-08 23:12:36 +1100777 case oIdentitiesOnly:
778 intptr = &options->identities_only;
779 goto parse_flag;
780
Damien Miller509b0102003-12-17 16:33:10 +1100781 case oServerAliveInterval:
782 intptr = &options->server_alive_interval;
783 goto parse_time;
784
785 case oServerAliveCountMax:
786 intptr = &options->server_alive_count_max;
787 goto parse_int;
788
Darren Tucker46bc0752004-05-02 22:11:30 +1000789 case oSendEnv:
790 while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
791 if (strchr(arg, '=') != NULL)
792 fatal("%s line %d: Invalid environment name.",
793 filename, linenum);
Damien Millerf8e7acc2005-03-05 11:22:50 +1100794 if (!*activep)
795 continue;
Darren Tucker46bc0752004-05-02 22:11:30 +1000796 if (options->num_send_env >= MAX_SEND_ENV)
797 fatal("%s line %d: too many send env.",
798 filename, linenum);
799 options->send_env[options->num_send_env++] =
800 xstrdup(arg);
801 }
802 break;
803
Damien Miller0e220db2004-06-15 10:34:08 +1000804 case oControlPath:
805 charptr = &options->control_path;
806 goto parse_string;
807
808 case oControlMaster:
809 intptr = &options->control_master;
Damien Millerd14b1e72005-06-16 13:19:41 +1000810 arg = strdelim(&s);
811 if (!arg || *arg == '\0')
812 fatal("%.200s line %d: Missing ControlMaster argument.",
813 filename, linenum);
814 value = 0; /* To avoid compiler warning... */
815 if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
816 value = SSHCTL_MASTER_YES;
817 else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
818 value = SSHCTL_MASTER_NO;
819 else if (strcmp(arg, "auto") == 0)
820 value = SSHCTL_MASTER_AUTO;
821 else if (strcmp(arg, "ask") == 0)
822 value = SSHCTL_MASTER_ASK;
823 else if (strcmp(arg, "autoask") == 0)
824 value = SSHCTL_MASTER_AUTO_ASK;
825 else
826 fatal("%.200s line %d: Bad ControlMaster argument.",
827 filename, linenum);
828 if (*activep && *intptr == -1)
829 *intptr = value;
830 break;
Damien Miller0e220db2004-06-15 10:34:08 +1000831
Damien Millere1776152005-03-01 21:47:37 +1100832 case oHashKnownHosts:
833 intptr = &options->hash_known_hosts;
834 goto parse_flag;
835
Damien Millerd27b9472005-12-13 19:29:02 +1100836 case oTunnel:
837 intptr = &options->tun_open;
Damien Miller7b58e802005-12-13 19:33:19 +1100838 arg = strdelim(&s);
839 if (!arg || *arg == '\0')
840 fatal("%s line %d: Missing yes/point-to-point/"
841 "ethernet/no argument.", filename, linenum);
842 value = 0; /* silence compiler */
843 if (strcasecmp(arg, "ethernet") == 0)
844 value = SSH_TUNMODE_ETHERNET;
845 else if (strcasecmp(arg, "point-to-point") == 0)
846 value = SSH_TUNMODE_POINTOPOINT;
847 else if (strcasecmp(arg, "yes") == 0)
848 value = SSH_TUNMODE_DEFAULT;
849 else if (strcasecmp(arg, "no") == 0)
850 value = SSH_TUNMODE_NO;
851 else
852 fatal("%s line %d: Bad yes/point-to-point/ethernet/"
853 "no argument: %s", filename, linenum, arg);
854 if (*activep)
855 *intptr = value;
856 break;
Damien Millerd27b9472005-12-13 19:29:02 +1100857
858 case oTunnelDevice:
859 arg = strdelim(&s);
860 if (!arg || *arg == '\0')
861 fatal("%.200s line %d: Missing argument.", filename, linenum);
862 value = a2tun(arg, &value2);
Damien Miller7b58e802005-12-13 19:33:19 +1100863 if (value == SSH_TUNID_ERR)
Damien Millerd27b9472005-12-13 19:29:02 +1100864 fatal("%.200s line %d: Bad tun device.", filename, linenum);
865 if (*activep) {
866 options->tun_local = value;
867 options->tun_remote = value2;
868 }
869 break;
870
871 case oLocalCommand:
872 charptr = &options->local_command;
873 goto parse_command;
874
875 case oPermitLocalCommand:
876 intptr = &options->permit_local_command;
877 goto parse_flag;
878
Ben Lindstrom4daea862002-06-09 20:04:02 +0000879 case oDeprecated:
Ben Lindstrom2e17b082002-06-09 20:13:27 +0000880 debug("%s line %d: Deprecated option \"%s\"",
Ben Lindstrom4daea862002-06-09 20:04:02 +0000881 filename, linenum, keyword);
Ben Lindstrom2e17b082002-06-09 20:13:27 +0000882 return 0;
Ben Lindstrom4daea862002-06-09 20:04:02 +0000883
Damien Millerf9b3feb2003-05-16 11:38:32 +1000884 case oUnsupported:
885 error("%s line %d: Unsupported option \"%s\"",
886 filename, linenum, keyword);
887 return 0;
888
Damien Miller95def091999-11-25 00:26:21 +1100889 default:
890 fatal("process_config_line: Unimplemented opcode %d", opcode);
891 }
892
893 /* Check that there is no garbage at end of line. */
Ben Lindstrom226cfa02001-01-22 05:34:40 +0000894 if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
Damien Miller37023962000-07-11 17:31:38 +1000895 fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
Damien Miller0dc1bef2005-07-17 17:22:45 +1000896 filename, linenum, arg);
Damien Miller37023962000-07-11 17:31:38 +1000897 }
Damien Miller95def091999-11-25 00:26:21 +1100898 return 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000899}
900
901
Damien Miller5428f641999-11-25 11:54:57 +1100902/*
903 * Reads the config file and modifies the options accordingly. Options
904 * should already be initialized before this call. This never returns if
Ben Lindstromedc0cf22001-09-12 18:32:20 +0000905 * there is an error. If the file does not exist, this returns 0.
Damien Miller5428f641999-11-25 11:54:57 +1100906 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000907
Ben Lindstromedc0cf22001-09-12 18:32:20 +0000908int
Darren Tuckerfc959702004-07-17 16:12:08 +1000909read_config_file(const char *filename, const char *host, Options *options,
Damien Miller57a44762004-04-20 20:11:57 +1000910 int checkperm)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000911{
Damien Miller95def091999-11-25 00:26:21 +1100912 FILE *f;
913 char line[1024];
914 int active, linenum;
915 int bad_options = 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000916
Damien Miller95def091999-11-25 00:26:21 +1100917 /* Open the file. */
Damien Miller57a44762004-04-20 20:11:57 +1000918 if ((f = fopen(filename, "r")) == NULL)
Ben Lindstromedc0cf22001-09-12 18:32:20 +0000919 return 0;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000920
Damien Miller57a44762004-04-20 20:11:57 +1000921 if (checkperm) {
922 struct stat sb;
Darren Tuckerfc959702004-07-17 16:12:08 +1000923
Damien Miller33793852004-06-15 10:27:55 +1000924 if (fstat(fileno(f), &sb) == -1)
Damien Miller57a44762004-04-20 20:11:57 +1000925 fatal("fstat %s: %s", filename, strerror(errno));
Damien Miller57a44762004-04-20 20:11:57 +1000926 if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
Damien Miller33793852004-06-15 10:27:55 +1000927 (sb.st_mode & 022) != 0))
Damien Miller57a44762004-04-20 20:11:57 +1000928 fatal("Bad owner or permissions on %s", filename);
Damien Miller57a44762004-04-20 20:11:57 +1000929 }
930
Damien Miller95def091999-11-25 00:26:21 +1100931 debug("Reading configuration data %.200s", filename);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000932
Damien Miller5428f641999-11-25 11:54:57 +1100933 /*
934 * Mark that we are now processing the options. This flag is turned
935 * on/off by Host specifications.
936 */
Damien Miller95def091999-11-25 00:26:21 +1100937 active = 1;
938 linenum = 0;
939 while (fgets(line, sizeof(line), f)) {
940 /* Update line number counter. */
941 linenum++;
942 if (process_config_line(options, host, line, filename, linenum, &active) != 0)
943 bad_options++;
944 }
945 fclose(f);
946 if (bad_options > 0)
Ben Lindstrom6df8ef42001-03-05 07:47:23 +0000947 fatal("%s: terminating, %d bad configuration options",
Damien Miller9f0f5c62001-12-21 14:45:46 +1100948 filename, bad_options);
Ben Lindstromedc0cf22001-09-12 18:32:20 +0000949 return 1;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000950}
951
Damien Miller5428f641999-11-25 11:54:57 +1100952/*
953 * Initializes options to special values that indicate that they have not yet
954 * been set. Read_config_file will only set options with this value. Options
955 * are processed in the following order: command line, user config file,
956 * system config file. Last, fill_default_options is called.
957 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000958
Damien Miller4af51302000-04-16 11:18:38 +1000959void
Damien Miller95def091999-11-25 00:26:21 +1100960initialize_options(Options * options)
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000961{
Damien Miller95def091999-11-25 00:26:21 +1100962 memset(options, 'X', sizeof(*options));
963 options->forward_agent = -1;
964 options->forward_x11 = -1;
Darren Tucker0a118da2003-10-15 15:54:32 +1000965 options->forward_x11_trusted = -1;
Damien Millerd3a18572000-06-07 19:55:44 +1000966 options->xauth_location = NULL;
Damien Miller95def091999-11-25 00:26:21 +1100967 options->gateway_ports = -1;
968 options->use_privileged_port = -1;
Damien Miller95def091999-11-25 00:26:21 +1100969 options->rsa_authentication = -1;
Damien Miller0bc1bd82000-11-13 22:57:25 +1100970 options->pubkey_authentication = -1;
Ben Lindstrom551ea372001-06-05 18:56:16 +0000971 options->challenge_response_authentication = -1;
Darren Tucker0efd1552003-08-26 11:49:55 +1000972 options->gss_authentication = -1;
973 options->gss_deleg_creds = -1;
Damien Miller95def091999-11-25 00:26:21 +1100974 options->password_authentication = -1;
Damien Miller874d77b2000-10-14 16:23:11 +1100975 options->kbd_interactive_authentication = -1;
976 options->kbd_interactive_devices = NULL;
Damien Miller95def091999-11-25 00:26:21 +1100977 options->rhosts_rsa_authentication = -1;
Ben Lindstrom5eabda32001-04-12 23:34:34 +0000978 options->hostbased_authentication = -1;
Damien Miller95def091999-11-25 00:26:21 +1100979 options->batch_mode = -1;
980 options->check_host_ip = -1;
981 options->strict_host_key_checking = -1;
982 options->compression = -1;
Damien Miller12c150e2003-12-17 16:31:10 +1100983 options->tcp_keep_alive = -1;
Damien Miller95def091999-11-25 00:26:21 +1100984 options->compression_level = -1;
985 options->port = -1;
Darren Tucker0a4f04b2003-07-03 20:37:47 +1000986 options->address_family = -1;
Damien Miller95def091999-11-25 00:26:21 +1100987 options->connection_attempts = -1;
Damien Millerb78d5eb2003-05-16 11:39:04 +1000988 options->connection_timeout = -1;
Damien Miller95def091999-11-25 00:26:21 +1100989 options->number_of_password_prompts = -1;
990 options->cipher = -1;
Damien Miller78928792000-04-12 20:17:38 +1000991 options->ciphers = NULL;
Ben Lindstrom06b33aa2001-02-15 03:01:59 +0000992 options->macs = NULL;
Ben Lindstrom982dbbc2001-04-17 18:11:36 +0000993 options->hostkeyalgorithms = NULL;
Damien Miller78928792000-04-12 20:17:38 +1000994 options->protocol = SSH_PROTO_UNKNOWN;
Damien Miller95def091999-11-25 00:26:21 +1100995 options->num_identity_files = 0;
996 options->hostname = NULL;
Ben Lindstrom4dccfa52000-12-28 16:40:05 +0000997 options->host_key_alias = NULL;
Damien Miller95def091999-11-25 00:26:21 +1100998 options->proxy_command = NULL;
999 options->user = NULL;
1000 options->escape_char = -1;
1001 options->system_hostfile = NULL;
1002 options->user_hostfile = NULL;
Damien Millereba71ba2000-04-29 23:57:08 +10001003 options->system_hostfile2 = NULL;
1004 options->user_hostfile2 = NULL;
Damien Miller95def091999-11-25 00:26:21 +11001005 options->num_local_forwards = 0;
1006 options->num_remote_forwards = 0;
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +00001007 options->clear_forwardings = -1;
Damien Millerfcd93202002-02-05 12:26:34 +11001008 options->log_level = SYSLOG_LEVEL_NOT_SET;
Ben Lindstromb9be60a2001-03-11 01:49:19 +00001009 options->preferred_authentications = NULL;
Ben Lindstrome0f88042001-04-30 13:06:24 +00001010 options->bind_address = NULL;
Ben Lindstromf7db3bb2001-08-06 21:35:51 +00001011 options->smartcard_device = NULL;
Ben Lindstromb6df73b2002-11-09 15:52:31 +00001012 options->enable_ssh_keysign = - 1;
Ben Lindstrom3cecc9a2001-10-03 17:39:38 +00001013 options->no_host_authentication_for_localhost = - 1;
Damien Millerbd394c32004-03-08 23:12:36 +11001014 options->identities_only = - 1;
Damien Millera5539d22003-04-09 20:50:06 +10001015 options->rekey_limit = - 1;
Damien Miller37876e92003-05-15 10:19:46 +10001016 options->verify_host_key_dns = -1;
Damien Miller509b0102003-12-17 16:33:10 +11001017 options->server_alive_interval = -1;
1018 options->server_alive_count_max = -1;
Darren Tucker46bc0752004-05-02 22:11:30 +10001019 options->num_send_env = 0;
Damien Miller0e220db2004-06-15 10:34:08 +10001020 options->control_path = NULL;
1021 options->control_master = -1;
Damien Millere1776152005-03-01 21:47:37 +11001022 options->hash_known_hosts = -1;
Damien Millerd27b9472005-12-13 19:29:02 +11001023 options->tun_open = -1;
1024 options->tun_local = -1;
1025 options->tun_remote = -1;
1026 options->local_command = NULL;
1027 options->permit_local_command = -1;
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001028}
1029
Damien Miller5428f641999-11-25 11:54:57 +11001030/*
1031 * Called after processing other sources of option data, this fills those
1032 * options for which no value has been specified with their default values.
1033 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001034
Damien Miller4af51302000-04-16 11:18:38 +10001035void
Damien Miller95def091999-11-25 00:26:21 +11001036fill_default_options(Options * options)
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001037{
Ben Lindstrom4f7a64a2001-02-10 22:50:09 +00001038 int len;
1039
Damien Miller95def091999-11-25 00:26:21 +11001040 if (options->forward_agent == -1)
Damien Millerb1715dc2000-05-30 13:44:51 +10001041 options->forward_agent = 0;
Damien Miller95def091999-11-25 00:26:21 +11001042 if (options->forward_x11 == -1)
Damien Miller98c7ad62000-03-09 21:27:49 +11001043 options->forward_x11 = 0;
Darren Tucker0a118da2003-10-15 15:54:32 +10001044 if (options->forward_x11_trusted == -1)
1045 options->forward_x11_trusted = 0;
Damien Millerd3a18572000-06-07 19:55:44 +10001046 if (options->xauth_location == NULL)
Ben Lindstrom1bf11f62001-06-09 01:48:01 +00001047 options->xauth_location = _PATH_XAUTH;
Damien Miller95def091999-11-25 00:26:21 +11001048 if (options->gateway_ports == -1)
1049 options->gateway_ports = 0;
1050 if (options->use_privileged_port == -1)
Ben Lindstromcebc8582001-03-08 03:39:10 +00001051 options->use_privileged_port = 0;
Damien Miller95def091999-11-25 00:26:21 +11001052 if (options->rsa_authentication == -1)
1053 options->rsa_authentication = 1;
Damien Miller0bc1bd82000-11-13 22:57:25 +11001054 if (options->pubkey_authentication == -1)
1055 options->pubkey_authentication = 1;
Ben Lindstrom551ea372001-06-05 18:56:16 +00001056 if (options->challenge_response_authentication == -1)
Ben Lindstrom0076d752001-08-06 20:53:26 +00001057 options->challenge_response_authentication = 1;
Darren Tucker0efd1552003-08-26 11:49:55 +10001058 if (options->gss_authentication == -1)
Darren Tuckera044f472003-10-15 15:52:03 +10001059 options->gss_authentication = 0;
Darren Tucker0efd1552003-08-26 11:49:55 +10001060 if (options->gss_deleg_creds == -1)
1061 options->gss_deleg_creds = 0;
Damien Miller95def091999-11-25 00:26:21 +11001062 if (options->password_authentication == -1)
1063 options->password_authentication = 1;
Damien Miller874d77b2000-10-14 16:23:11 +11001064 if (options->kbd_interactive_authentication == -1)
Ben Lindstrom95fb2dd2001-01-23 03:12:10 +00001065 options->kbd_interactive_authentication = 1;
Damien Miller95def091999-11-25 00:26:21 +11001066 if (options->rhosts_rsa_authentication == -1)
Ben Lindstrom2bf82762002-06-11 15:53:05 +00001067 options->rhosts_rsa_authentication = 0;
Ben Lindstrom5eabda32001-04-12 23:34:34 +00001068 if (options->hostbased_authentication == -1)
1069 options->hostbased_authentication = 0;
Damien Miller95def091999-11-25 00:26:21 +11001070 if (options->batch_mode == -1)
1071 options->batch_mode = 0;
1072 if (options->check_host_ip == -1)
1073 options->check_host_ip = 1;
1074 if (options->strict_host_key_checking == -1)
1075 options->strict_host_key_checking = 2; /* 2 is default */
1076 if (options->compression == -1)
1077 options->compression = 0;
Damien Miller12c150e2003-12-17 16:31:10 +11001078 if (options->tcp_keep_alive == -1)
1079 options->tcp_keep_alive = 1;
Damien Miller95def091999-11-25 00:26:21 +11001080 if (options->compression_level == -1)
1081 options->compression_level = 6;
1082 if (options->port == -1)
1083 options->port = 0; /* Filled in ssh_connect. */
Darren Tucker0a4f04b2003-07-03 20:37:47 +10001084 if (options->address_family == -1)
1085 options->address_family = AF_UNSPEC;
Damien Miller95def091999-11-25 00:26:21 +11001086 if (options->connection_attempts == -1)
Ben Lindstromf9cedb92001-08-06 21:07:11 +00001087 options->connection_attempts = 1;
Damien Miller95def091999-11-25 00:26:21 +11001088 if (options->number_of_password_prompts == -1)
1089 options->number_of_password_prompts = 3;
1090 /* Selected in ssh_login(). */
1091 if (options->cipher == -1)
1092 options->cipher = SSH_CIPHER_NOT_SET;
Damien Miller30c3d422000-05-09 11:02:59 +10001093 /* options->ciphers, default set in myproposals.h */
Ben Lindstrom06b33aa2001-02-15 03:01:59 +00001094 /* options->macs, default set in myproposals.h */
Ben Lindstrom982dbbc2001-04-17 18:11:36 +00001095 /* options->hostkeyalgorithms, default set in myproposals.h */
Damien Miller78928792000-04-12 20:17:38 +10001096 if (options->protocol == SSH_PROTO_UNKNOWN)
Ben Lindstrom6b776432001-03-22 01:24:04 +00001097 options->protocol = SSH_PROTO_1|SSH_PROTO_2;
Damien Miller95def091999-11-25 00:26:21 +11001098 if (options->num_identity_files == 0) {
Damien Miller0bc1bd82000-11-13 22:57:25 +11001099 if (options->protocol & SSH_PROTO_1) {
Ben Lindstrom4f7a64a2001-02-10 22:50:09 +00001100 len = 2 + strlen(_PATH_SSH_CLIENT_IDENTITY) + 1;
Damien Miller0bc1bd82000-11-13 22:57:25 +11001101 options->identity_files[options->num_identity_files] =
Ben Lindstrom4f7a64a2001-02-10 22:50:09 +00001102 xmalloc(len);
1103 snprintf(options->identity_files[options->num_identity_files++],
1104 len, "~/%.100s", _PATH_SSH_CLIENT_IDENTITY);
Damien Miller0bc1bd82000-11-13 22:57:25 +11001105 }
1106 if (options->protocol & SSH_PROTO_2) {
Ben Lindstromb00d4fb2001-03-05 06:03:03 +00001107 len = 2 + strlen(_PATH_SSH_CLIENT_ID_RSA) + 1;
1108 options->identity_files[options->num_identity_files] =
1109 xmalloc(len);
1110 snprintf(options->identity_files[options->num_identity_files++],
1111 len, "~/%.100s", _PATH_SSH_CLIENT_ID_RSA);
1112
Ben Lindstrom4f7a64a2001-02-10 22:50:09 +00001113 len = 2 + strlen(_PATH_SSH_CLIENT_ID_DSA) + 1;
Damien Miller0bc1bd82000-11-13 22:57:25 +11001114 options->identity_files[options->num_identity_files] =
Ben Lindstrom4f7a64a2001-02-10 22:50:09 +00001115 xmalloc(len);
1116 snprintf(options->identity_files[options->num_identity_files++],
1117 len, "~/%.100s", _PATH_SSH_CLIENT_ID_DSA);
Damien Miller0bc1bd82000-11-13 22:57:25 +11001118 }
Damien Millereba71ba2000-04-29 23:57:08 +10001119 }
Damien Miller95def091999-11-25 00:26:21 +11001120 if (options->escape_char == -1)
1121 options->escape_char = '~';
1122 if (options->system_hostfile == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +00001123 options->system_hostfile = _PATH_SSH_SYSTEM_HOSTFILE;
Damien Miller95def091999-11-25 00:26:21 +11001124 if (options->user_hostfile == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +00001125 options->user_hostfile = _PATH_SSH_USER_HOSTFILE;
Damien Millereba71ba2000-04-29 23:57:08 +10001126 if (options->system_hostfile2 == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +00001127 options->system_hostfile2 = _PATH_SSH_SYSTEM_HOSTFILE2;
Damien Millereba71ba2000-04-29 23:57:08 +10001128 if (options->user_hostfile2 == NULL)
Ben Lindstrom226cfa02001-01-22 05:34:40 +00001129 options->user_hostfile2 = _PATH_SSH_USER_HOSTFILE2;
Damien Millerfcd93202002-02-05 12:26:34 +11001130 if (options->log_level == SYSLOG_LEVEL_NOT_SET)
Ben Lindstromdb65e8f2001-01-19 04:26:52 +00001131 options->log_level = SYSLOG_LEVEL_INFO;
Ben Lindstrom2b7a0e92001-09-20 00:57:55 +00001132 if (options->clear_forwardings == 1)
1133 clear_forwardings(options);
Ben Lindstrom3cecc9a2001-10-03 17:39:38 +00001134 if (options->no_host_authentication_for_localhost == - 1)
1135 options->no_host_authentication_for_localhost = 0;
Damien Millerbd394c32004-03-08 23:12:36 +11001136 if (options->identities_only == -1)
1137 options->identities_only = 0;
Ben Lindstromb6df73b2002-11-09 15:52:31 +00001138 if (options->enable_ssh_keysign == -1)
1139 options->enable_ssh_keysign = 0;
Damien Millera5539d22003-04-09 20:50:06 +10001140 if (options->rekey_limit == -1)
1141 options->rekey_limit = 0;
Damien Miller37876e92003-05-15 10:19:46 +10001142 if (options->verify_host_key_dns == -1)
1143 options->verify_host_key_dns = 0;
Damien Miller509b0102003-12-17 16:33:10 +11001144 if (options->server_alive_interval == -1)
1145 options->server_alive_interval = 0;
1146 if (options->server_alive_count_max == -1)
1147 options->server_alive_count_max = 3;
Damien Miller0e220db2004-06-15 10:34:08 +10001148 if (options->control_master == -1)
1149 options->control_master = 0;
Damien Millere1776152005-03-01 21:47:37 +11001150 if (options->hash_known_hosts == -1)
1151 options->hash_known_hosts = 0;
Damien Millerd27b9472005-12-13 19:29:02 +11001152 if (options->tun_open == -1)
Damien Miller7b58e802005-12-13 19:33:19 +11001153 options->tun_open = SSH_TUNMODE_NO;
1154 if (options->tun_local == -1)
1155 options->tun_local = SSH_TUNID_ANY;
1156 if (options->tun_remote == -1)
1157 options->tun_remote = SSH_TUNID_ANY;
Damien Millerd27b9472005-12-13 19:29:02 +11001158 if (options->permit_local_command == -1)
1159 options->permit_local_command = 0;
1160 /* options->local_command should not be set by default */
Damien Miller95def091999-11-25 00:26:21 +11001161 /* options->proxy_command should not be set by default */
1162 /* options->user will be set in the main program if appropriate */
1163 /* options->hostname will be set in the main program if appropriate */
Ben Lindstrom4dccfa52000-12-28 16:40:05 +00001164 /* options->host_key_alias should not be set by default */
Ben Lindstromb9be60a2001-03-11 01:49:19 +00001165 /* options->preferred_authentications will be set in ssh */
Damien Millerd4a8b7e1999-10-27 13:42:43 +10001166}
Damien Millerf91ee4c2005-03-01 21:24:33 +11001167
1168/*
1169 * parse_forward
1170 * parses a string containing a port forwarding specification of the form:
1171 * [listenhost:]listenport:connecthost:connectport
1172 * returns number of arguments parsed or zero on error
1173 */
1174int
1175parse_forward(Forward *fwd, const char *fwdspec)
1176{
1177 int i;
1178 char *p, *cp, *fwdarg[4];
1179
1180 memset(fwd, '\0', sizeof(*fwd));
1181
1182 cp = p = xstrdup(fwdspec);
1183
1184 /* skip leading spaces */
1185 while (*cp && isspace(*cp))
1186 cp++;
1187
1188 for (i = 0; i < 4; ++i)
1189 if ((fwdarg[i] = hpdelim(&cp)) == NULL)
1190 break;
1191
1192 /* Check for trailing garbage in 4-arg case*/
1193 if (cp != NULL)
1194 i = 0; /* failure */
1195
1196 switch (i) {
1197 case 3:
1198 fwd->listen_host = NULL;
1199 fwd->listen_port = a2port(fwdarg[0]);
1200 fwd->connect_host = xstrdup(cleanhostname(fwdarg[1]));
1201 fwd->connect_port = a2port(fwdarg[2]);
1202 break;
1203
1204 case 4:
1205 fwd->listen_host = xstrdup(cleanhostname(fwdarg[0]));
1206 fwd->listen_port = a2port(fwdarg[1]);
1207 fwd->connect_host = xstrdup(cleanhostname(fwdarg[2]));
1208 fwd->connect_port = a2port(fwdarg[3]);
1209 break;
1210 default:
1211 i = 0; /* failure */
1212 }
1213
1214 xfree(p);
1215
1216 if (fwd->listen_port == 0 && fwd->connect_port == 0)
1217 goto fail_free;
1218
1219 if (fwd->connect_host != NULL &&
1220 strlen(fwd->connect_host) >= NI_MAXHOST)
1221 goto fail_free;
1222
1223 return (i);
1224
1225 fail_free:
1226 if (fwd->connect_host != NULL)
1227 xfree(fwd->connect_host);
1228 if (fwd->listen_host != NULL)
1229 xfree(fwd->listen_host);
1230 return (0);
1231}