Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 1 | /* |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 2 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 3 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
| 4 | * All rights reserved |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 5 | * Functions for reading the configuration files. |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 6 | * |
Damien Miller | e4340be | 2000-09-16 13:29:08 +1100 | [diff] [blame] | 7 | * 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 Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 12 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 13 | |
| 14 | #include "includes.h" |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame^] | 15 | RCSID("$OpenBSD: readconf.c,v 1.118 2003/08/22 10:56:09 markus Exp $"); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 16 | |
| 17 | #include "ssh.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 18 | #include "xmalloc.h" |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 19 | #include "compat.h" |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 20 | #include "cipher.h" |
| 21 | #include "pathnames.h" |
| 22 | #include "log.h" |
| 23 | #include "readconf.h" |
| 24 | #include "match.h" |
| 25 | #include "misc.h" |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 26 | #include "kex.h" |
| 27 | #include "mac.h" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 28 | |
| 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 Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 44 | User foo |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 45 | |
| 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 Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 60 | PasswordAuthentication no |
| 61 | |
| 62 | Host puukko.hut.fi |
| 63 | User t35124p |
| 64 | ProxyCommand ssh-proxy %h %p |
| 65 | |
| 66 | Host *.fr |
Ben Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 67 | PublicKeyAuthentication no |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 68 | |
| 69 | Host *.su |
| 70 | Cipher none |
| 71 | PasswordAuthentication no |
| 72 | |
| 73 | # Defaults for various options |
| 74 | Host * |
| 75 | ForwardAgent no |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 76 | ForwardX11 no |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 77 | PasswordAuthentication yes |
| 78 | RSAAuthentication yes |
| 79 | RhostsRSAAuthentication yes |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 80 | StrictHostKeyChecking yes |
| 81 | KeepAlives no |
| 82 | IdentityFile ~/.ssh/identity |
| 83 | Port 22 |
| 84 | EscapeChar ~ |
| 85 | |
| 86 | */ |
| 87 | |
| 88 | /* Keyword tokens. */ |
| 89 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 90 | typedef enum { |
| 91 | oBadOption, |
Darren Tucker | ec960f2 | 2003-08-13 20:37:05 +1000 | [diff] [blame] | 92 | oForwardAgent, oForwardX11, oGatewayPorts, |
Ben Lindstrom | cb72e4f | 2002-06-21 00:41:51 +0000 | [diff] [blame] | 93 | oPasswordAuthentication, oRSAAuthentication, |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 94 | oChallengeResponseAuthentication, oXAuthLocation, |
Darren Tucker | 6aaa58c | 2003-08-02 22:24:49 +1000 | [diff] [blame] | 95 | oKerberosAuthentication, oKerberosTgtPassing, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 96 | oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, |
| 97 | oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, |
| 98 | oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, |
| 99 | oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 100 | oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 101 | oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 102 | oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication, |
Ben Lindstrom | b9be60a | 2001-03-11 01:49:19 +0000 | [diff] [blame] | 103 | oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias, |
Ben Lindstrom | 982dbbc | 2001-04-17 18:11:36 +0000 | [diff] [blame] | 104 | oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication, |
Ben Lindstrom | 2b7a0e9 | 2001-09-20 00:57:55 +0000 | [diff] [blame] | 105 | oHostKeyAlgorithms, oBindAddress, oSmartcardDevice, |
Ben Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 106 | oClearAllForwardings, oNoHostAuthenticationForLocalhost, |
Damien Miller | b78d5eb | 2003-05-16 11:39:04 +1000 | [diff] [blame] | 107 | oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout, |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame^] | 108 | oAddressFamily, oGssAuthentication, oGssDelegateCreds, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 109 | oDeprecated, oUnsupported |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 110 | } OpCodes; |
| 111 | |
| 112 | /* Textual representations of the tokens. */ |
| 113 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 114 | static struct { |
| 115 | const char *name; |
| 116 | OpCodes opcode; |
| 117 | } keywords[] = { |
| 118 | { "forwardagent", oForwardAgent }, |
| 119 | { "forwardx11", oForwardX11 }, |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 120 | { "xauthlocation", oXAuthLocation }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 121 | { "gatewayports", oGatewayPorts }, |
| 122 | { "useprivilegedport", oUsePrivilegedPort }, |
Darren Tucker | ec960f2 | 2003-08-13 20:37:05 +1000 | [diff] [blame] | 123 | { "rhostsauthentication", oDeprecated }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 124 | { "passwordauthentication", oPasswordAuthentication }, |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 125 | { "kbdinteractiveauthentication", oKbdInteractiveAuthentication }, |
| 126 | { "kbdinteractivedevices", oKbdInteractiveDevices }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 127 | { "rsaauthentication", oRSAAuthentication }, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 128 | { "pubkeyauthentication", oPubkeyAuthentication }, |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 129 | { "dsaauthentication", oPubkeyAuthentication }, /* alias */ |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 130 | { "rhostsrsaauthentication", oRhostsRSAAuthentication }, |
Ben Lindstrom | d69dab3 | 2001-04-12 23:36:05 +0000 | [diff] [blame] | 131 | { "hostbasedauthentication", oHostbasedAuthentication }, |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 132 | { "challengeresponseauthentication", oChallengeResponseAuthentication }, |
| 133 | { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */ |
| 134 | { "tisauthentication", oChallengeResponseAuthentication }, /* alias */ |
Darren Tucker | 6aaa58c | 2003-08-02 22:24:49 +1000 | [diff] [blame] | 135 | #ifdef KRB5 |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 136 | { "kerberosauthentication", oKerberosAuthentication }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 137 | { "kerberostgtpassing", oKerberosTgtPassing }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 138 | #else |
| 139 | { "kerberosauthentication", oUnsupported }, |
| 140 | { "kerberostgtpassing", oUnsupported }, |
| 141 | #endif |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 142 | { "afstokenpassing", oUnsupported }, |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame^] | 143 | #if defined(GSSAPI) |
| 144 | { "gssapiauthentication", oGssAuthentication }, |
| 145 | { "gssapidelegatecreds", oGssDelegateCreds }, |
| 146 | { "gssapidelegatecredentials", oGssDelegateCreds }, |
| 147 | #else |
| 148 | { "gssapiauthentication", oUnsupported }, |
| 149 | { "gssapidelegatecredentials", oUnsupported }, |
| 150 | #endif |
Ben Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 151 | { "fallbacktorsh", oDeprecated }, |
| 152 | { "usersh", oDeprecated }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 153 | { "identityfile", oIdentityFile }, |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 154 | { "identityfile2", oIdentityFile }, /* alias */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 155 | { "hostname", oHostName }, |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 156 | { "hostkeyalias", oHostKeyAlias }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 157 | { "proxycommand", oProxyCommand }, |
| 158 | { "port", oPort }, |
| 159 | { "cipher", oCipher }, |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 160 | { "ciphers", oCiphers }, |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 161 | { "macs", oMacs }, |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 162 | { "protocol", oProtocol }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 163 | { "remoteforward", oRemoteForward }, |
| 164 | { "localforward", oLocalForward }, |
| 165 | { "user", oUser }, |
| 166 | { "host", oHost }, |
| 167 | { "escapechar", oEscapeChar }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 168 | { "globalknownhostsfile", oGlobalKnownHostsFile }, |
Ben Lindstrom | d6481ea | 2001-06-25 04:37:41 +0000 | [diff] [blame] | 169 | { "userknownhostsfile", oUserKnownHostsFile }, /* obsolete */ |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 170 | { "globalknownhostsfile2", oGlobalKnownHostsFile2 }, |
Ben Lindstrom | d6481ea | 2001-06-25 04:37:41 +0000 | [diff] [blame] | 171 | { "userknownhostsfile2", oUserKnownHostsFile2 }, /* obsolete */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 172 | { "connectionattempts", oConnectionAttempts }, |
| 173 | { "batchmode", oBatchMode }, |
| 174 | { "checkhostip", oCheckHostIP }, |
| 175 | { "stricthostkeychecking", oStrictHostKeyChecking }, |
| 176 | { "compression", oCompression }, |
| 177 | { "compressionlevel", oCompressionLevel }, |
| 178 | { "keepalive", oKeepAlives }, |
| 179 | { "numberofpasswordprompts", oNumberOfPasswordPrompts }, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 180 | { "loglevel", oLogLevel }, |
Ben Lindstrom | 3bb4f9d | 2001-04-08 18:30:26 +0000 | [diff] [blame] | 181 | { "dynamicforward", oDynamicForward }, |
Ben Lindstrom | b9be60a | 2001-03-11 01:49:19 +0000 | [diff] [blame] | 182 | { "preferredauthentications", oPreferredAuthentications }, |
Ben Lindstrom | 982dbbc | 2001-04-17 18:11:36 +0000 | [diff] [blame] | 183 | { "hostkeyalgorithms", oHostKeyAlgorithms }, |
Ben Lindstrom | e0f8804 | 2001-04-30 13:06:24 +0000 | [diff] [blame] | 184 | { "bindaddress", oBindAddress }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 185 | #ifdef SMARTCARD |
Ben Lindstrom | ae996bf | 2001-08-06 21:27:53 +0000 | [diff] [blame] | 186 | { "smartcarddevice", oSmartcardDevice }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 187 | #else |
| 188 | { "smartcarddevice", oUnsupported }, |
| 189 | #endif |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 190 | { "clearallforwardings", oClearAllForwardings }, |
Ben Lindstrom | b6df73b | 2002-11-09 15:52:31 +0000 | [diff] [blame] | 191 | { "enablesshkeysign", oEnableSSHKeysign }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 192 | #ifdef DNS |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 193 | { "verifyhostkeydns", oVerifyHostKeyDNS }, |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 194 | #else |
| 195 | { "verifyhostkeydns", oUnsupported }, |
| 196 | #endif |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 197 | { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost }, |
Damien Miller | a5539d2 | 2003-04-09 20:50:06 +1000 | [diff] [blame] | 198 | { "rekeylimit", oRekeyLimit }, |
Damien Miller | b78d5eb | 2003-05-16 11:39:04 +1000 | [diff] [blame] | 199 | { "connecttimeout", oConnectTimeout }, |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 200 | { "addressfamily", oAddressFamily }, |
Ben Lindstrom | 65366a8 | 2001-12-06 16:32:47 +0000 | [diff] [blame] | 201 | { NULL, oBadOption } |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 202 | }; |
| 203 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 204 | /* |
| 205 | * Adds a local TCP/IP port forward to options. Never returns if there is an |
| 206 | * error. |
| 207 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 208 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 209 | void |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 210 | add_local_forward(Options *options, u_short port, const char *host, |
| 211 | u_short host_port) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 212 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 213 | Forward *fwd; |
Ben Lindstrom | 99a4e14 | 2002-07-09 14:06:40 +0000 | [diff] [blame] | 214 | #ifndef NO_IPPORT_RESERVED_CONCEPT |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 215 | extern uid_t original_real_uid; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 216 | if (port < IPPORT_RESERVED && original_real_uid != 0) |
Ben Lindstrom | 6df8ef4 | 2001-03-05 07:47:23 +0000 | [diff] [blame] | 217 | fatal("Privileged ports can only be forwarded by root."); |
Damien Miller | bac2d8a | 2000-09-05 16:13:06 +1100 | [diff] [blame] | 218 | #endif |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 219 | if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
| 220 | fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION); |
| 221 | fwd = &options->local_forwards[options->num_local_forwards++]; |
| 222 | fwd->port = port; |
| 223 | fwd->host = xstrdup(host); |
| 224 | fwd->host_port = host_port; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 225 | } |
| 226 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 227 | /* |
| 228 | * Adds a remote TCP/IP port forward to options. Never returns if there is |
| 229 | * an error. |
| 230 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 231 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 232 | void |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 233 | add_remote_forward(Options *options, u_short port, const char *host, |
| 234 | u_short host_port) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 235 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 236 | Forward *fwd; |
| 237 | if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
| 238 | fatal("Too many remote forwards (max %d).", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 239 | SSH_MAX_FORWARDS_PER_DIRECTION); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 240 | fwd = &options->remote_forwards[options->num_remote_forwards++]; |
| 241 | fwd->port = port; |
| 242 | fwd->host = xstrdup(host); |
| 243 | fwd->host_port = host_port; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 244 | } |
| 245 | |
Ben Lindstrom | 2b7a0e9 | 2001-09-20 00:57:55 +0000 | [diff] [blame] | 246 | static void |
| 247 | clear_forwardings(Options *options) |
| 248 | { |
| 249 | int i; |
| 250 | |
| 251 | for (i = 0; i < options->num_local_forwards; i++) |
| 252 | xfree(options->local_forwards[i].host); |
| 253 | options->num_local_forwards = 0; |
| 254 | for (i = 0; i < options->num_remote_forwards; i++) |
| 255 | xfree(options->remote_forwards[i].host); |
| 256 | options->num_remote_forwards = 0; |
| 257 | } |
| 258 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 259 | /* |
Ben Lindstrom | 3704c26 | 2001-04-02 18:20:03 +0000 | [diff] [blame] | 260 | * Returns the number of the token pointed to by cp or oBadOption. |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 261 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 262 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 263 | static OpCodes |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 264 | parse_token(const char *cp, const char *filename, int linenum) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 265 | { |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 266 | u_int i; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 267 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 268 | for (i = 0; keywords[i].name; i++) |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 269 | if (strcasecmp(cp, keywords[i].name) == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 270 | return keywords[i].opcode; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 271 | |
Ben Lindstrom | b5cdc66 | 2001-04-16 02:13:26 +0000 | [diff] [blame] | 272 | error("%s: line %d: Bad configuration option: %s", |
| 273 | filename, linenum, cp); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 274 | return oBadOption; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 275 | } |
| 276 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 277 | /* |
| 278 | * Processes a single option line as used in the configuration files. This |
| 279 | * only sets those values that have not already been set. |
| 280 | */ |
Damien Miller | 61f08ac | 2003-02-24 11:56:27 +1100 | [diff] [blame] | 281 | #define WHITESPACE " \t\r\n" |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 282 | |
Damien Miller | 2ccf661 | 1999-11-15 15:25:10 +1100 | [diff] [blame] | 283 | int |
| 284 | process_config_line(Options *options, const char *host, |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 285 | char *line, const char *filename, int linenum, |
| 286 | int *activep) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 287 | { |
Damien Miller | 61f08ac | 2003-02-24 11:56:27 +1100 | [diff] [blame] | 288 | char buf[256], *s, **charptr, *endofnumber, *keyword, *arg; |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 289 | int opcode, *intptr, value; |
Damien Miller | 61f08ac | 2003-02-24 11:56:27 +1100 | [diff] [blame] | 290 | size_t len; |
Damien Miller | aae6c61 | 1999-12-06 11:47:28 +1100 | [diff] [blame] | 291 | u_short fwd_port, fwd_host_port; |
Ben Lindstrom | 62c25a4 | 2001-09-12 18:01:59 +0000 | [diff] [blame] | 292 | char sfwd_host_port[6]; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 293 | |
Damien Miller | c652cac | 2003-05-14 13:40:54 +1000 | [diff] [blame] | 294 | /* Strip trailing whitespace */ |
| 295 | for(len = strlen(line) - 1; len > 0; len--) { |
| 296 | if (strchr(WHITESPACE, line[len]) == NULL) |
| 297 | break; |
| 298 | line[len] = '\0'; |
| 299 | } |
| 300 | |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 301 | s = line; |
| 302 | /* Get the keyword. (Each line is supposed to begin with a keyword). */ |
| 303 | keyword = strdelim(&s); |
| 304 | /* Ignore leading whitespace. */ |
| 305 | if (*keyword == '\0') |
| 306 | keyword = strdelim(&s); |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 307 | if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 308 | return 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 309 | |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 310 | opcode = parse_token(keyword, filename, linenum); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 311 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 312 | switch (opcode) { |
| 313 | case oBadOption: |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 314 | /* don't panic, but count bad options */ |
| 315 | return -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 316 | /* NOTREACHED */ |
Damien Miller | b78d5eb | 2003-05-16 11:39:04 +1000 | [diff] [blame] | 317 | case oConnectTimeout: |
| 318 | intptr = &options->connection_timeout; |
| 319 | /* parse_time: */ |
| 320 | arg = strdelim(&s); |
| 321 | if (!arg || *arg == '\0') |
| 322 | fatal("%s line %d: missing time value.", |
| 323 | filename, linenum); |
| 324 | if ((value = convtime(arg)) == -1) |
| 325 | fatal("%s line %d: invalid time value.", |
| 326 | filename, linenum); |
| 327 | if (*intptr == -1) |
| 328 | *intptr = value; |
| 329 | break; |
| 330 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 331 | case oForwardAgent: |
| 332 | intptr = &options->forward_agent; |
| 333 | parse_flag: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 334 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 335 | if (!arg || *arg == '\0') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 336 | fatal("%.200s line %d: Missing yes/no argument.", filename, linenum); |
| 337 | value = 0; /* To avoid compiler warning... */ |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 338 | if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 339 | value = 1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 340 | else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 341 | value = 0; |
| 342 | else |
| 343 | fatal("%.200s line %d: Bad yes/no argument.", filename, linenum); |
| 344 | if (*activep && *intptr == -1) |
| 345 | *intptr = value; |
| 346 | break; |
| 347 | |
| 348 | case oForwardX11: |
| 349 | intptr = &options->forward_x11; |
| 350 | goto parse_flag; |
| 351 | |
| 352 | case oGatewayPorts: |
| 353 | intptr = &options->gateway_ports; |
| 354 | goto parse_flag; |
| 355 | |
| 356 | case oUsePrivilegedPort: |
| 357 | intptr = &options->use_privileged_port; |
| 358 | goto parse_flag; |
| 359 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 360 | case oPasswordAuthentication: |
| 361 | intptr = &options->password_authentication; |
| 362 | goto parse_flag; |
| 363 | |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 364 | case oKbdInteractiveAuthentication: |
| 365 | intptr = &options->kbd_interactive_authentication; |
| 366 | goto parse_flag; |
| 367 | |
| 368 | case oKbdInteractiveDevices: |
| 369 | charptr = &options->kbd_interactive_devices; |
| 370 | goto parse_string; |
| 371 | |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 372 | case oPubkeyAuthentication: |
| 373 | intptr = &options->pubkey_authentication; |
Damien Miller | e247cc4 | 2000-05-07 12:03:14 +1000 | [diff] [blame] | 374 | goto parse_flag; |
| 375 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 376 | case oRSAAuthentication: |
| 377 | intptr = &options->rsa_authentication; |
| 378 | goto parse_flag; |
| 379 | |
| 380 | case oRhostsRSAAuthentication: |
| 381 | intptr = &options->rhosts_rsa_authentication; |
| 382 | goto parse_flag; |
| 383 | |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 384 | case oHostbasedAuthentication: |
| 385 | intptr = &options->hostbased_authentication; |
| 386 | goto parse_flag; |
| 387 | |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 388 | case oChallengeResponseAuthentication: |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 389 | intptr = &options->challenge_response_authentication; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 390 | goto parse_flag; |
Damien Miller | 2aa0ab4 | 2003-05-15 12:05:28 +1000 | [diff] [blame] | 391 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 392 | case oKerberosAuthentication: |
| 393 | intptr = &options->kerberos_authentication; |
| 394 | goto parse_flag; |
Damien Miller | 2aa0ab4 | 2003-05-15 12:05:28 +1000 | [diff] [blame] | 395 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 396 | case oKerberosTgtPassing: |
| 397 | intptr = &options->kerberos_tgt_passing; |
| 398 | goto parse_flag; |
Damien Miller | 2aa0ab4 | 2003-05-15 12:05:28 +1000 | [diff] [blame] | 399 | |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame^] | 400 | case oGssAuthentication: |
| 401 | intptr = &options->gss_authentication; |
| 402 | goto parse_flag; |
| 403 | |
| 404 | case oGssDelegateCreds: |
| 405 | intptr = &options->gss_deleg_creds; |
| 406 | goto parse_flag; |
| 407 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 408 | case oBatchMode: |
| 409 | intptr = &options->batch_mode; |
| 410 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 411 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 412 | case oCheckHostIP: |
| 413 | intptr = &options->check_host_ip; |
| 414 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 415 | |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 416 | case oVerifyHostKeyDNS: |
| 417 | intptr = &options->verify_host_key_dns; |
| 418 | goto parse_flag; |
| 419 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 420 | case oStrictHostKeyChecking: |
| 421 | intptr = &options->strict_host_key_checking; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 422 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 423 | if (!arg || *arg == '\0') |
Ben Lindstrom | 5ed8acd | 2001-01-29 08:00:54 +0000 | [diff] [blame] | 424 | fatal("%.200s line %d: Missing yes/no/ask argument.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 425 | filename, linenum); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 426 | value = 0; /* To avoid compiler warning... */ |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 427 | if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 428 | value = 1; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 429 | else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 430 | value = 0; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 431 | else if (strcmp(arg, "ask") == 0) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 432 | value = 2; |
| 433 | else |
| 434 | fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum); |
| 435 | if (*activep && *intptr == -1) |
| 436 | *intptr = value; |
| 437 | break; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 438 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 439 | case oCompression: |
| 440 | intptr = &options->compression; |
| 441 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 442 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 443 | case oKeepAlives: |
| 444 | intptr = &options->keepalives; |
| 445 | goto parse_flag; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 446 | |
Ben Lindstrom | 3cecc9a | 2001-10-03 17:39:38 +0000 | [diff] [blame] | 447 | case oNoHostAuthenticationForLocalhost: |
| 448 | intptr = &options->no_host_authentication_for_localhost; |
| 449 | goto parse_flag; |
| 450 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 451 | case oNumberOfPasswordPrompts: |
| 452 | intptr = &options->number_of_password_prompts; |
| 453 | goto parse_int; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 454 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 455 | case oCompressionLevel: |
| 456 | intptr = &options->compression_level; |
| 457 | goto parse_int; |
| 458 | |
Damien Miller | a5539d2 | 2003-04-09 20:50:06 +1000 | [diff] [blame] | 459 | case oRekeyLimit: |
| 460 | intptr = &options->rekey_limit; |
| 461 | arg = strdelim(&s); |
| 462 | if (!arg || *arg == '\0') |
| 463 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
| 464 | if (arg[0] < '0' || arg[0] > '9') |
| 465 | fatal("%.200s line %d: Bad number.", filename, linenum); |
| 466 | value = strtol(arg, &endofnumber, 10); |
| 467 | if (arg == endofnumber) |
| 468 | fatal("%.200s line %d: Bad number.", filename, linenum); |
| 469 | switch (toupper(*endofnumber)) { |
| 470 | case 'K': |
| 471 | value *= 1<<10; |
| 472 | break; |
| 473 | case 'M': |
| 474 | value *= 1<<20; |
| 475 | break; |
| 476 | case 'G': |
| 477 | value *= 1<<30; |
| 478 | break; |
| 479 | } |
| 480 | if (*activep && *intptr == -1) |
| 481 | *intptr = value; |
| 482 | break; |
| 483 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 484 | case oIdentityFile: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 485 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 486 | if (!arg || *arg == '\0') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 487 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
| 488 | if (*activep) { |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 489 | intptr = &options->num_identity_files; |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 490 | if (*intptr >= SSH_MAX_IDENTITY_FILES) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 491 | fatal("%.200s line %d: Too many identity files specified (max %d).", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 492 | filename, linenum, SSH_MAX_IDENTITY_FILES); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 493 | charptr = &options->identity_files[*intptr]; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 494 | *charptr = xstrdup(arg); |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 495 | *intptr = *intptr + 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 496 | } |
| 497 | break; |
| 498 | |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 499 | case oXAuthLocation: |
| 500 | charptr=&options->xauth_location; |
| 501 | goto parse_string; |
| 502 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 503 | case oUser: |
| 504 | charptr = &options->user; |
| 505 | parse_string: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 506 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 507 | if (!arg || *arg == '\0') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 508 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
| 509 | if (*activep && *charptr == NULL) |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 510 | *charptr = xstrdup(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 511 | break; |
| 512 | |
| 513 | case oGlobalKnownHostsFile: |
| 514 | charptr = &options->system_hostfile; |
| 515 | goto parse_string; |
| 516 | |
| 517 | case oUserKnownHostsFile: |
| 518 | charptr = &options->user_hostfile; |
| 519 | goto parse_string; |
| 520 | |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 521 | case oGlobalKnownHostsFile2: |
| 522 | charptr = &options->system_hostfile2; |
| 523 | goto parse_string; |
| 524 | |
| 525 | case oUserKnownHostsFile2: |
| 526 | charptr = &options->user_hostfile2; |
| 527 | goto parse_string; |
| 528 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 529 | case oHostName: |
| 530 | charptr = &options->hostname; |
| 531 | goto parse_string; |
| 532 | |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 533 | case oHostKeyAlias: |
| 534 | charptr = &options->host_key_alias; |
| 535 | goto parse_string; |
| 536 | |
Ben Lindstrom | b9be60a | 2001-03-11 01:49:19 +0000 | [diff] [blame] | 537 | case oPreferredAuthentications: |
| 538 | charptr = &options->preferred_authentications; |
| 539 | goto parse_string; |
| 540 | |
Ben Lindstrom | e0f8804 | 2001-04-30 13:06:24 +0000 | [diff] [blame] | 541 | case oBindAddress: |
| 542 | charptr = &options->bind_address; |
| 543 | goto parse_string; |
| 544 | |
Ben Lindstrom | ae996bf | 2001-08-06 21:27:53 +0000 | [diff] [blame] | 545 | case oSmartcardDevice: |
Ben Lindstrom | f7db3bb | 2001-08-06 21:35:51 +0000 | [diff] [blame] | 546 | charptr = &options->smartcard_device; |
| 547 | goto parse_string; |
Ben Lindstrom | ae996bf | 2001-08-06 21:27:53 +0000 | [diff] [blame] | 548 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 549 | case oProxyCommand: |
Darren Tucker | a99c1b7 | 2003-06-28 12:40:12 +1000 | [diff] [blame] | 550 | if (s == NULL) |
| 551 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 552 | charptr = &options->proxy_command; |
Damien Miller | 61f08ac | 2003-02-24 11:56:27 +1100 | [diff] [blame] | 553 | len = strspn(s, WHITESPACE "="); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 554 | if (*activep && *charptr == NULL) |
Damien Miller | 61f08ac | 2003-02-24 11:56:27 +1100 | [diff] [blame] | 555 | *charptr = xstrdup(s + len); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 556 | return 0; |
| 557 | |
| 558 | case oPort: |
| 559 | intptr = &options->port; |
| 560 | parse_int: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 561 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 562 | if (!arg || *arg == '\0') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 563 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 564 | if (arg[0] < '0' || arg[0] > '9') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 565 | fatal("%.200s line %d: Bad number.", filename, linenum); |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 566 | |
| 567 | /* Octal, decimal, or hex format? */ |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 568 | value = strtol(arg, &endofnumber, 0); |
| 569 | if (arg == endofnumber) |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 570 | fatal("%.200s line %d: Bad number.", filename, linenum); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 571 | if (*activep && *intptr == -1) |
| 572 | *intptr = value; |
| 573 | break; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 574 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 575 | case oConnectionAttempts: |
| 576 | intptr = &options->connection_attempts; |
| 577 | goto parse_int; |
Damien Miller | 5ce662a | 1999-11-11 17:57:39 +1100 | [diff] [blame] | 578 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 579 | case oCipher: |
| 580 | intptr = &options->cipher; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 581 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 582 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 583 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 584 | value = cipher_number(arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 585 | if (value == -1) |
| 586 | fatal("%.200s line %d: Bad cipher '%s'.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 587 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 588 | if (*activep && *intptr == -1) |
| 589 | *intptr = value; |
| 590 | break; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 591 | |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 592 | case oCiphers: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 593 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 594 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 595 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 596 | if (!ciphers_valid(arg)) |
Damien Miller | 30c3d42 | 2000-05-09 11:02:59 +1000 | [diff] [blame] | 597 | fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 598 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 599 | if (*activep && options->ciphers == NULL) |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 600 | options->ciphers = xstrdup(arg); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 601 | break; |
| 602 | |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 603 | case oMacs: |
| 604 | arg = strdelim(&s); |
| 605 | if (!arg || *arg == '\0') |
| 606 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
| 607 | if (!mac_valid(arg)) |
| 608 | fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 609 | filename, linenum, arg ? arg : "<NONE>"); |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 610 | if (*activep && options->macs == NULL) |
| 611 | options->macs = xstrdup(arg); |
| 612 | break; |
| 613 | |
Ben Lindstrom | 982dbbc | 2001-04-17 18:11:36 +0000 | [diff] [blame] | 614 | case oHostKeyAlgorithms: |
| 615 | arg = strdelim(&s); |
| 616 | if (!arg || *arg == '\0') |
| 617 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
| 618 | if (!key_names_valid2(arg)) |
| 619 | fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 620 | filename, linenum, arg ? arg : "<NONE>"); |
Ben Lindstrom | 982dbbc | 2001-04-17 18:11:36 +0000 | [diff] [blame] | 621 | if (*activep && options->hostkeyalgorithms == NULL) |
| 622 | options->hostkeyalgorithms = xstrdup(arg); |
| 623 | break; |
| 624 | |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 625 | case oProtocol: |
| 626 | intptr = &options->protocol; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 627 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 628 | if (!arg || *arg == '\0') |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 629 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 630 | value = proto_spec(arg); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 631 | if (value == SSH_PROTO_UNKNOWN) |
| 632 | fatal("%.200s line %d: Bad protocol spec '%s'.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 633 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 634 | if (*activep && *intptr == SSH_PROTO_UNKNOWN) |
| 635 | *intptr = value; |
| 636 | break; |
| 637 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 638 | case oLogLevel: |
| 639 | intptr = (int *) &options->log_level; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 640 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 641 | value = log_level_number(arg); |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 642 | if (value == SYSLOG_LEVEL_NOT_SET) |
Ben Lindstrom | 6df8ef4 | 2001-03-05 07:47:23 +0000 | [diff] [blame] | 643 | fatal("%.200s line %d: unsupported log level '%s'", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 644 | filename, linenum, arg ? arg : "<NONE>"); |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 645 | if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET) |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 646 | *intptr = (LogLevel) value; |
| 647 | break; |
| 648 | |
Ben Lindstrom | 62c25a4 | 2001-09-12 18:01:59 +0000 | [diff] [blame] | 649 | case oLocalForward: |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 650 | case oRemoteForward: |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 651 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 652 | if (!arg || *arg == '\0') |
Ben Lindstrom | 62c25a4 | 2001-09-12 18:01:59 +0000 | [diff] [blame] | 653 | fatal("%.200s line %d: Missing port argument.", |
| 654 | filename, linenum); |
| 655 | if ((fwd_port = a2port(arg)) == 0) |
| 656 | fatal("%.200s line %d: Bad listen port.", |
| 657 | filename, linenum); |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 658 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 659 | if (!arg || *arg == '\0') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 660 | fatal("%.200s line %d: Missing second argument.", |
Ben Lindstrom | 62c25a4 | 2001-09-12 18:01:59 +0000 | [diff] [blame] | 661 | filename, linenum); |
| 662 | if (sscanf(arg, "%255[^:]:%5[0-9]", buf, sfwd_host_port) != 2 && |
| 663 | sscanf(arg, "%255[^/]/%5[0-9]", buf, sfwd_host_port) != 2) |
| 664 | fatal("%.200s line %d: Bad forwarding specification.", |
| 665 | filename, linenum); |
| 666 | if ((fwd_host_port = a2port(sfwd_host_port)) == 0) |
| 667 | fatal("%.200s line %d: Bad forwarding port.", |
| 668 | filename, linenum); |
| 669 | if (*activep) { |
| 670 | if (opcode == oLocalForward) |
| 671 | add_local_forward(options, fwd_port, buf, |
| 672 | fwd_host_port); |
| 673 | else if (opcode == oRemoteForward) |
| 674 | add_remote_forward(options, fwd_port, buf, |
| 675 | fwd_host_port); |
| 676 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 677 | break; |
| 678 | |
Ben Lindstrom | 3bb4f9d | 2001-04-08 18:30:26 +0000 | [diff] [blame] | 679 | case oDynamicForward: |
| 680 | arg = strdelim(&s); |
| 681 | if (!arg || *arg == '\0') |
| 682 | fatal("%.200s line %d: Missing port argument.", |
| 683 | filename, linenum); |
Ben Lindstrom | 19066a1 | 2001-04-12 23:39:26 +0000 | [diff] [blame] | 684 | fwd_port = a2port(arg); |
| 685 | if (fwd_port == 0) |
Ben Lindstrom | 3bb4f9d | 2001-04-08 18:30:26 +0000 | [diff] [blame] | 686 | fatal("%.200s line %d: Badly formatted port number.", |
| 687 | filename, linenum); |
Ben Lindstrom | 525a093 | 2001-09-12 17:35:27 +0000 | [diff] [blame] | 688 | if (*activep) |
Darren Tucker | 1c52ee3 | 2003-08-13 20:38:36 +1000 | [diff] [blame] | 689 | add_local_forward(options, fwd_port, "socks", 0); |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 690 | break; |
Ben Lindstrom | 3bb4f9d | 2001-04-08 18:30:26 +0000 | [diff] [blame] | 691 | |
Ben Lindstrom | 2b7a0e9 | 2001-09-20 00:57:55 +0000 | [diff] [blame] | 692 | case oClearAllForwardings: |
| 693 | intptr = &options->clear_forwardings; |
| 694 | goto parse_flag; |
| 695 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 696 | case oHost: |
| 697 | *activep = 0; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 698 | while ((arg = strdelim(&s)) != NULL && *arg != '\0') |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 699 | if (match_pattern(host, arg)) { |
| 700 | debug("Applying options for %.100s", arg); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 701 | *activep = 1; |
| 702 | break; |
| 703 | } |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 704 | /* Avoid garbage check below, as strdelim is done. */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 705 | return 0; |
| 706 | |
| 707 | case oEscapeChar: |
| 708 | intptr = &options->escape_char; |
Damien Miller | be484b5 | 2000-07-15 14:14:16 +1000 | [diff] [blame] | 709 | arg = strdelim(&s); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 710 | if (!arg || *arg == '\0') |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 711 | fatal("%.200s line %d: Missing argument.", filename, linenum); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 712 | if (arg[0] == '^' && arg[2] == 0 && |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 713 | (u_char) arg[1] >= 64 && (u_char) arg[1] < 128) |
| 714 | value = (u_char) arg[1] & 31; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 715 | else if (strlen(arg) == 1) |
Ben Lindstrom | 46c1622 | 2000-12-22 01:43:59 +0000 | [diff] [blame] | 716 | value = (u_char) arg[0]; |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 717 | else if (strcmp(arg, "none") == 0) |
Ben Lindstrom | 2b1f71b | 2001-06-05 20:32:21 +0000 | [diff] [blame] | 718 | value = SSH_ESCAPECHAR_NONE; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 719 | else { |
| 720 | fatal("%.200s line %d: Bad escape character.", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 721 | filename, linenum); |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 722 | /* NOTREACHED */ |
| 723 | value = 0; /* Avoid compiler warning. */ |
| 724 | } |
| 725 | if (*activep && *intptr == -1) |
| 726 | *intptr = value; |
| 727 | break; |
| 728 | |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 729 | case oAddressFamily: |
| 730 | arg = strdelim(&s); |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 731 | intptr = &options->address_family; |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 732 | if (strcasecmp(arg, "inet") == 0) |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 733 | value = AF_INET; |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 734 | else if (strcasecmp(arg, "inet6") == 0) |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 735 | value = AF_INET6; |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 736 | else if (strcasecmp(arg, "any") == 0) |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 737 | value = AF_UNSPEC; |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 738 | else |
| 739 | fatal("Unsupported AddressFamily \"%s\"", arg); |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 740 | if (*activep && *intptr == -1) |
| 741 | *intptr = value; |
Damien Miller | 20a8f97 | 2003-05-18 20:50:30 +1000 | [diff] [blame] | 742 | break; |
| 743 | |
Ben Lindstrom | b6df73b | 2002-11-09 15:52:31 +0000 | [diff] [blame] | 744 | case oEnableSSHKeysign: |
| 745 | intptr = &options->enable_ssh_keysign; |
| 746 | goto parse_flag; |
| 747 | |
Ben Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 748 | case oDeprecated: |
Ben Lindstrom | 2e17b08 | 2002-06-09 20:13:27 +0000 | [diff] [blame] | 749 | debug("%s line %d: Deprecated option \"%s\"", |
Ben Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 750 | filename, linenum, keyword); |
Ben Lindstrom | 2e17b08 | 2002-06-09 20:13:27 +0000 | [diff] [blame] | 751 | return 0; |
Ben Lindstrom | 4daea86 | 2002-06-09 20:04:02 +0000 | [diff] [blame] | 752 | |
Damien Miller | f9b3feb | 2003-05-16 11:38:32 +1000 | [diff] [blame] | 753 | case oUnsupported: |
| 754 | error("%s line %d: Unsupported option \"%s\"", |
| 755 | filename, linenum, keyword); |
| 756 | return 0; |
| 757 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 758 | default: |
| 759 | fatal("process_config_line: Unimplemented opcode %d", opcode); |
| 760 | } |
| 761 | |
| 762 | /* Check that there is no garbage at end of line. */ |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 763 | if ((arg = strdelim(&s)) != NULL && *arg != '\0') { |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 764 | fatal("%.200s line %d: garbage at end of line; \"%.200s\".", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 765 | filename, linenum, arg); |
Damien Miller | 3702396 | 2000-07-11 17:31:38 +1000 | [diff] [blame] | 766 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 767 | return 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 771 | /* |
| 772 | * Reads the config file and modifies the options accordingly. Options |
| 773 | * should already be initialized before this call. This never returns if |
Ben Lindstrom | edc0cf2 | 2001-09-12 18:32:20 +0000 | [diff] [blame] | 774 | * there is an error. If the file does not exist, this returns 0. |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 775 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 776 | |
Ben Lindstrom | edc0cf2 | 2001-09-12 18:32:20 +0000 | [diff] [blame] | 777 | int |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 778 | read_config_file(const char *filename, const char *host, Options *options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 779 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 780 | FILE *f; |
| 781 | char line[1024]; |
| 782 | int active, linenum; |
| 783 | int bad_options = 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 784 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 785 | /* Open the file. */ |
| 786 | f = fopen(filename, "r"); |
| 787 | if (!f) |
Ben Lindstrom | edc0cf2 | 2001-09-12 18:32:20 +0000 | [diff] [blame] | 788 | return 0; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 789 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 790 | debug("Reading configuration data %.200s", filename); |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 791 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 792 | /* |
| 793 | * Mark that we are now processing the options. This flag is turned |
| 794 | * on/off by Host specifications. |
| 795 | */ |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 796 | active = 1; |
| 797 | linenum = 0; |
| 798 | while (fgets(line, sizeof(line), f)) { |
| 799 | /* Update line number counter. */ |
| 800 | linenum++; |
| 801 | if (process_config_line(options, host, line, filename, linenum, &active) != 0) |
| 802 | bad_options++; |
| 803 | } |
| 804 | fclose(f); |
| 805 | if (bad_options > 0) |
Ben Lindstrom | 6df8ef4 | 2001-03-05 07:47:23 +0000 | [diff] [blame] | 806 | fatal("%s: terminating, %d bad configuration options", |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 807 | filename, bad_options); |
Ben Lindstrom | edc0cf2 | 2001-09-12 18:32:20 +0000 | [diff] [blame] | 808 | return 1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 809 | } |
| 810 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 811 | /* |
| 812 | * Initializes options to special values that indicate that they have not yet |
| 813 | * been set. Read_config_file will only set options with this value. Options |
| 814 | * are processed in the following order: command line, user config file, |
| 815 | * system config file. Last, fill_default_options is called. |
| 816 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 817 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 818 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 819 | initialize_options(Options * options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 820 | { |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 821 | memset(options, 'X', sizeof(*options)); |
| 822 | options->forward_agent = -1; |
| 823 | options->forward_x11 = -1; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 824 | options->xauth_location = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 825 | options->gateway_ports = -1; |
| 826 | options->use_privileged_port = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 827 | options->rsa_authentication = -1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 828 | options->pubkey_authentication = -1; |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 829 | options->challenge_response_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 830 | options->kerberos_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 831 | options->kerberos_tgt_passing = -1; |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame^] | 832 | options->gss_authentication = -1; |
| 833 | options->gss_deleg_creds = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 834 | options->password_authentication = -1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 835 | options->kbd_interactive_authentication = -1; |
| 836 | options->kbd_interactive_devices = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 837 | options->rhosts_rsa_authentication = -1; |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 838 | options->hostbased_authentication = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 839 | options->batch_mode = -1; |
| 840 | options->check_host_ip = -1; |
| 841 | options->strict_host_key_checking = -1; |
| 842 | options->compression = -1; |
| 843 | options->keepalives = -1; |
| 844 | options->compression_level = -1; |
| 845 | options->port = -1; |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 846 | options->address_family = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 847 | options->connection_attempts = -1; |
Damien Miller | b78d5eb | 2003-05-16 11:39:04 +1000 | [diff] [blame] | 848 | options->connection_timeout = -1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 849 | options->number_of_password_prompts = -1; |
| 850 | options->cipher = -1; |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 851 | options->ciphers = NULL; |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 852 | options->macs = NULL; |
Ben Lindstrom | 982dbbc | 2001-04-17 18:11:36 +0000 | [diff] [blame] | 853 | options->hostkeyalgorithms = NULL; |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 854 | options->protocol = SSH_PROTO_UNKNOWN; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 855 | options->num_identity_files = 0; |
| 856 | options->hostname = NULL; |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 857 | options->host_key_alias = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 858 | options->proxy_command = NULL; |
| 859 | options->user = NULL; |
| 860 | options->escape_char = -1; |
| 861 | options->system_hostfile = NULL; |
| 862 | options->user_hostfile = NULL; |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 863 | options->system_hostfile2 = NULL; |
| 864 | options->user_hostfile2 = NULL; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 865 | options->num_local_forwards = 0; |
| 866 | options->num_remote_forwards = 0; |
Ben Lindstrom | 2b7a0e9 | 2001-09-20 00:57:55 +0000 | [diff] [blame] | 867 | options->clear_forwardings = -1; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 868 | options->log_level = SYSLOG_LEVEL_NOT_SET; |
Ben Lindstrom | b9be60a | 2001-03-11 01:49:19 +0000 | [diff] [blame] | 869 | options->preferred_authentications = NULL; |
Ben Lindstrom | e0f8804 | 2001-04-30 13:06:24 +0000 | [diff] [blame] | 870 | options->bind_address = NULL; |
Ben Lindstrom | f7db3bb | 2001-08-06 21:35:51 +0000 | [diff] [blame] | 871 | options->smartcard_device = NULL; |
Ben Lindstrom | b6df73b | 2002-11-09 15:52:31 +0000 | [diff] [blame] | 872 | options->enable_ssh_keysign = - 1; |
Ben Lindstrom | 3cecc9a | 2001-10-03 17:39:38 +0000 | [diff] [blame] | 873 | options->no_host_authentication_for_localhost = - 1; |
Damien Miller | a5539d2 | 2003-04-09 20:50:06 +1000 | [diff] [blame] | 874 | options->rekey_limit = - 1; |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 875 | options->verify_host_key_dns = -1; |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 876 | } |
| 877 | |
Damien Miller | 5428f64 | 1999-11-25 11:54:57 +1100 | [diff] [blame] | 878 | /* |
| 879 | * Called after processing other sources of option data, this fills those |
| 880 | * options for which no value has been specified with their default values. |
| 881 | */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 882 | |
Damien Miller | 4af5130 | 2000-04-16 11:18:38 +1000 | [diff] [blame] | 883 | void |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 884 | fill_default_options(Options * options) |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 885 | { |
Ben Lindstrom | 4f7a64a | 2001-02-10 22:50:09 +0000 | [diff] [blame] | 886 | int len; |
| 887 | |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 888 | if (options->forward_agent == -1) |
Damien Miller | b1715dc | 2000-05-30 13:44:51 +1000 | [diff] [blame] | 889 | options->forward_agent = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 890 | if (options->forward_x11 == -1) |
Damien Miller | 98c7ad6 | 2000-03-09 21:27:49 +1100 | [diff] [blame] | 891 | options->forward_x11 = 0; |
Damien Miller | d3a1857 | 2000-06-07 19:55:44 +1000 | [diff] [blame] | 892 | if (options->xauth_location == NULL) |
Ben Lindstrom | 1bf11f6 | 2001-06-09 01:48:01 +0000 | [diff] [blame] | 893 | options->xauth_location = _PATH_XAUTH; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 894 | if (options->gateway_ports == -1) |
| 895 | options->gateway_ports = 0; |
| 896 | if (options->use_privileged_port == -1) |
Ben Lindstrom | cebc858 | 2001-03-08 03:39:10 +0000 | [diff] [blame] | 897 | options->use_privileged_port = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 898 | if (options->rsa_authentication == -1) |
| 899 | options->rsa_authentication = 1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 900 | if (options->pubkey_authentication == -1) |
| 901 | options->pubkey_authentication = 1; |
Ben Lindstrom | 551ea37 | 2001-06-05 18:56:16 +0000 | [diff] [blame] | 902 | if (options->challenge_response_authentication == -1) |
Ben Lindstrom | 0076d75 | 2001-08-06 20:53:26 +0000 | [diff] [blame] | 903 | options->challenge_response_authentication = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 904 | if (options->kerberos_authentication == -1) |
| 905 | options->kerberos_authentication = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 906 | if (options->kerberos_tgt_passing == -1) |
| 907 | options->kerberos_tgt_passing = 1; |
Darren Tucker | 0efd155 | 2003-08-26 11:49:55 +1000 | [diff] [blame^] | 908 | if (options->gss_authentication == -1) |
| 909 | options->gss_authentication = 1; |
| 910 | if (options->gss_deleg_creds == -1) |
| 911 | options->gss_deleg_creds = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 912 | if (options->password_authentication == -1) |
| 913 | options->password_authentication = 1; |
Damien Miller | 874d77b | 2000-10-14 16:23:11 +1100 | [diff] [blame] | 914 | if (options->kbd_interactive_authentication == -1) |
Ben Lindstrom | 95fb2dd | 2001-01-23 03:12:10 +0000 | [diff] [blame] | 915 | options->kbd_interactive_authentication = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 916 | if (options->rhosts_rsa_authentication == -1) |
Ben Lindstrom | 2bf8276 | 2002-06-11 15:53:05 +0000 | [diff] [blame] | 917 | options->rhosts_rsa_authentication = 0; |
Ben Lindstrom | 5eabda3 | 2001-04-12 23:34:34 +0000 | [diff] [blame] | 918 | if (options->hostbased_authentication == -1) |
| 919 | options->hostbased_authentication = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 920 | if (options->batch_mode == -1) |
| 921 | options->batch_mode = 0; |
| 922 | if (options->check_host_ip == -1) |
| 923 | options->check_host_ip = 1; |
| 924 | if (options->strict_host_key_checking == -1) |
| 925 | options->strict_host_key_checking = 2; /* 2 is default */ |
| 926 | if (options->compression == -1) |
| 927 | options->compression = 0; |
| 928 | if (options->keepalives == -1) |
| 929 | options->keepalives = 1; |
| 930 | if (options->compression_level == -1) |
| 931 | options->compression_level = 6; |
| 932 | if (options->port == -1) |
| 933 | options->port = 0; /* Filled in ssh_connect. */ |
Darren Tucker | 0a4f04b | 2003-07-03 20:37:47 +1000 | [diff] [blame] | 934 | if (options->address_family == -1) |
| 935 | options->address_family = AF_UNSPEC; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 936 | if (options->connection_attempts == -1) |
Ben Lindstrom | f9cedb9 | 2001-08-06 21:07:11 +0000 | [diff] [blame] | 937 | options->connection_attempts = 1; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 938 | if (options->number_of_password_prompts == -1) |
| 939 | options->number_of_password_prompts = 3; |
| 940 | /* Selected in ssh_login(). */ |
| 941 | if (options->cipher == -1) |
| 942 | options->cipher = SSH_CIPHER_NOT_SET; |
Damien Miller | 30c3d42 | 2000-05-09 11:02:59 +1000 | [diff] [blame] | 943 | /* options->ciphers, default set in myproposals.h */ |
Ben Lindstrom | 06b33aa | 2001-02-15 03:01:59 +0000 | [diff] [blame] | 944 | /* options->macs, default set in myproposals.h */ |
Ben Lindstrom | 982dbbc | 2001-04-17 18:11:36 +0000 | [diff] [blame] | 945 | /* options->hostkeyalgorithms, default set in myproposals.h */ |
Damien Miller | 7892879 | 2000-04-12 20:17:38 +1000 | [diff] [blame] | 946 | if (options->protocol == SSH_PROTO_UNKNOWN) |
Ben Lindstrom | 6b77643 | 2001-03-22 01:24:04 +0000 | [diff] [blame] | 947 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 948 | if (options->num_identity_files == 0) { |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 949 | if (options->protocol & SSH_PROTO_1) { |
Ben Lindstrom | 4f7a64a | 2001-02-10 22:50:09 +0000 | [diff] [blame] | 950 | len = 2 + strlen(_PATH_SSH_CLIENT_IDENTITY) + 1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 951 | options->identity_files[options->num_identity_files] = |
Ben Lindstrom | 4f7a64a | 2001-02-10 22:50:09 +0000 | [diff] [blame] | 952 | xmalloc(len); |
| 953 | snprintf(options->identity_files[options->num_identity_files++], |
| 954 | len, "~/%.100s", _PATH_SSH_CLIENT_IDENTITY); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 955 | } |
| 956 | if (options->protocol & SSH_PROTO_2) { |
Ben Lindstrom | b00d4fb | 2001-03-05 06:03:03 +0000 | [diff] [blame] | 957 | len = 2 + strlen(_PATH_SSH_CLIENT_ID_RSA) + 1; |
| 958 | options->identity_files[options->num_identity_files] = |
| 959 | xmalloc(len); |
| 960 | snprintf(options->identity_files[options->num_identity_files++], |
| 961 | len, "~/%.100s", _PATH_SSH_CLIENT_ID_RSA); |
| 962 | |
Ben Lindstrom | 4f7a64a | 2001-02-10 22:50:09 +0000 | [diff] [blame] | 963 | len = 2 + strlen(_PATH_SSH_CLIENT_ID_DSA) + 1; |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 964 | options->identity_files[options->num_identity_files] = |
Ben Lindstrom | 4f7a64a | 2001-02-10 22:50:09 +0000 | [diff] [blame] | 965 | xmalloc(len); |
| 966 | snprintf(options->identity_files[options->num_identity_files++], |
| 967 | len, "~/%.100s", _PATH_SSH_CLIENT_ID_DSA); |
Damien Miller | 0bc1bd8 | 2000-11-13 22:57:25 +1100 | [diff] [blame] | 968 | } |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 969 | } |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 970 | if (options->escape_char == -1) |
| 971 | options->escape_char = '~'; |
| 972 | if (options->system_hostfile == NULL) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 973 | options->system_hostfile = _PATH_SSH_SYSTEM_HOSTFILE; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 974 | if (options->user_hostfile == NULL) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 975 | options->user_hostfile = _PATH_SSH_USER_HOSTFILE; |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 976 | if (options->system_hostfile2 == NULL) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 977 | options->system_hostfile2 = _PATH_SSH_SYSTEM_HOSTFILE2; |
Damien Miller | eba71ba | 2000-04-29 23:57:08 +1000 | [diff] [blame] | 978 | if (options->user_hostfile2 == NULL) |
Ben Lindstrom | 226cfa0 | 2001-01-22 05:34:40 +0000 | [diff] [blame] | 979 | options->user_hostfile2 = _PATH_SSH_USER_HOSTFILE2; |
Damien Miller | fcd9320 | 2002-02-05 12:26:34 +1100 | [diff] [blame] | 980 | if (options->log_level == SYSLOG_LEVEL_NOT_SET) |
Ben Lindstrom | db65e8f | 2001-01-19 04:26:52 +0000 | [diff] [blame] | 981 | options->log_level = SYSLOG_LEVEL_INFO; |
Ben Lindstrom | 2b7a0e9 | 2001-09-20 00:57:55 +0000 | [diff] [blame] | 982 | if (options->clear_forwardings == 1) |
| 983 | clear_forwardings(options); |
Ben Lindstrom | 3cecc9a | 2001-10-03 17:39:38 +0000 | [diff] [blame] | 984 | if (options->no_host_authentication_for_localhost == - 1) |
| 985 | options->no_host_authentication_for_localhost = 0; |
Ben Lindstrom | b6df73b | 2002-11-09 15:52:31 +0000 | [diff] [blame] | 986 | if (options->enable_ssh_keysign == -1) |
| 987 | options->enable_ssh_keysign = 0; |
Damien Miller | a5539d2 | 2003-04-09 20:50:06 +1000 | [diff] [blame] | 988 | if (options->rekey_limit == -1) |
| 989 | options->rekey_limit = 0; |
Damien Miller | 37876e9 | 2003-05-15 10:19:46 +1000 | [diff] [blame] | 990 | if (options->verify_host_key_dns == -1) |
| 991 | options->verify_host_key_dns = 0; |
Damien Miller | 95def09 | 1999-11-25 00:26:21 +1100 | [diff] [blame] | 992 | /* options->proxy_command should not be set by default */ |
| 993 | /* options->user will be set in the main program if appropriate */ |
| 994 | /* options->hostname will be set in the main program if appropriate */ |
Ben Lindstrom | 4dccfa5 | 2000-12-28 16:40:05 +0000 | [diff] [blame] | 995 | /* options->host_key_alias should not be set by default */ |
Ben Lindstrom | b9be60a | 2001-03-11 01:49:19 +0000 | [diff] [blame] | 996 | /* options->preferred_authentications will be set in ssh */ |
Damien Miller | d4a8b7e | 1999-10-27 13:42:43 +1000 | [diff] [blame] | 997 | } |