Annotation of src/usr.bin/ssh/readconf.c, Revision 1.353
1.353 ! djm 1: /* $OpenBSD: readconf.c,v 1.352 2021/02/24 01:18:08 dtucker Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
21: #include <netinet/in.h>
1.190 djm 22: #include <netinet/ip.h>
1.148 stevesk 23:
24: #include <ctype.h>
1.154 stevesk 25: #include <errno.h>
1.206 djm 26: #include <fcntl.h>
1.252 djm 27: #include <glob.h>
1.155 stevesk 28: #include <netdb.h>
1.206 djm 29: #include <paths.h>
30: #include <pwd.h>
1.159 deraadt 31: #include <signal.h>
1.158 stevesk 32: #include <stdio.h>
1.157 stevesk 33: #include <string.h>
1.312 deraadt 34: #include <stdarg.h>
1.156 stevesk 35: #include <unistd.h>
1.228 deraadt 36: #include <limits.h>
1.200 dtucker 37: #include <util.h>
1.221 djm 38: #include <vis.h>
1.1 deraadt 39:
1.159 deraadt 40: #include "xmalloc.h"
1.1 deraadt 41: #include "ssh.h"
1.297 djm 42: #include "ssherr.h"
1.25 markus 43: #include "compat.h"
1.58 markus 44: #include "cipher.h"
1.55 markus 45: #include "pathnames.h"
1.58 markus 46: #include "log.h"
1.227 djm 47: #include "sshkey.h"
1.220 millert 48: #include "misc.h"
1.58 markus 49: #include "readconf.h"
50: #include "match.h"
1.62 markus 51: #include "kex.h"
52: #include "mac.h"
1.206 djm 53: #include "uidswap.h"
1.221 djm 54: #include "myproposal.h"
1.224 djm 55: #include "digest.h"
1.1 deraadt 56:
57: /* Format of the configuration file:
58:
59: # Configuration data is parsed as follows:
60: # 1. command line options
61: # 2. user-specific file
62: # 3. system-wide file
63: # Any configuration value is only changed the first time it is set.
64: # Thus, host-specific definitions should be at the beginning of the
65: # configuration file, and defaults at the end.
66:
67: # Host-specific declarations. These may override anything above. A single
68: # host may match multiple declarations; these are processed in the order
69: # that they are given in.
70:
71: Host *.ngs.fi ngs.fi
1.96 markus 72: User foo
1.1 deraadt 73:
74: Host fake.com
1.306 jmc 75: Hostname another.host.name.real.org
1.1 deraadt 76: User blaah
77: Port 34289
78: ForwardX11 no
79: ForwardAgent no
80:
81: Host books.com
82: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 83: Ciphers 3des-cbc
1.1 deraadt 84:
85: Host fascist.blob.com
86: Port 23123
87: User tylonen
88: PasswordAuthentication no
89:
90: Host puukko.hut.fi
91: User t35124p
92: ProxyCommand ssh-proxy %h %p
93:
94: Host *.fr
1.96 markus 95: PublicKeyAuthentication no
1.1 deraadt 96:
97: Host *.su
1.266 djm 98: Ciphers aes128-ctr
1.1 deraadt 99: PasswordAuthentication no
100:
1.144 reyk 101: Host vpn.fake.com
102: Tunnel yes
103: TunnelDevice 3
104:
1.1 deraadt 105: # Defaults for various options
106: Host *
107: ForwardAgent no
1.50 markus 108: ForwardX11 no
1.1 deraadt 109: PasswordAuthentication yes
110: StrictHostKeyChecking yes
1.126 markus 111: TcpKeepAlive no
1.1 deraadt 112: IdentityFile ~/.ssh/identity
113: Port 22
114: EscapeChar ~
115:
116: */
117:
1.252 djm 118: static int read_config_file_depth(const char *filename, struct passwd *pw,
119: const char *host, const char *original_host, Options *options,
1.302 djm 120: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 121: static int process_config_line_depth(Options *options, struct passwd *pw,
122: const char *host, const char *original_host, char *line,
1.302 djm 123: const char *filename, int linenum, int *activep, int flags,
124: int *want_final_pass, int depth);
1.252 djm 125:
1.1 deraadt 126: /* Keyword tokens. */
127:
1.17 markus 128: typedef enum {
129: oBadOption,
1.252 djm 130: oHost, oMatch, oInclude,
1.186 djm 131: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
132: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 133: oPasswordAuthentication,
1.59 markus 134: oChallengeResponseAuthentication, oXAuthLocation,
1.317 dtucker 135: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.351 markus 136: oPermitRemoteOpen,
1.253 markus 137: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 138: oUser, oEscapeChar, oProxyCommand,
1.17 markus 139: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
140: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 141: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 142: oLogFacility, oLogLevel, oLogVerbose, oCiphers, oMacs,
1.221 djm 143: oPubkeyAuthentication,
1.67 markus 144: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 145: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 146: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 147: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 148: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 149: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 150: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 151: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 152: oHashKnownHosts,
1.277 bluhm 153: oTunnel, oTunnelDevice,
154: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 155: oVisualHostKey,
1.205 djm 156: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 157: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
158: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 159: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.350 dtucker 160: oFingerprintHash, oUpdateHostkeys, oHostbasedAcceptedAlgorithms,
1.349 dtucker 161: oPubkeyAcceptedAlgorithms, oCASignatureAlgorithms, oProxyJump,
1.346 djm 162: oSecurityKeyProvider, oKnownHostsCommand,
1.273 djm 163: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 164: } OpCodes;
165:
166: /* Textual representations of the tokens. */
167:
1.17 markus 168: static struct {
169: const char *name;
170: OpCodes opcode;
171: } keywords[] = {
1.266 djm 172: /* Deprecated options */
1.273 djm 173: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 174: { "cipher", oDeprecated },
1.266 djm 175: { "fallbacktorsh", oDeprecated },
176: { "globalknownhostsfile2", oDeprecated },
177: { "rhostsauthentication", oDeprecated },
178: { "userknownhostsfile2", oDeprecated },
179: { "useroaming", oDeprecated },
180: { "usersh", oDeprecated },
1.294 dtucker 181: { "useprivilegedport", oDeprecated },
1.266 djm 182:
183: /* Unsupported options */
184: { "afstokenpassing", oUnsupported },
185: { "kerberosauthentication", oUnsupported },
186: { "kerberostgtpassing", oUnsupported },
1.318 dtucker 187: { "rsaauthentication", oUnsupported },
188: { "rhostsrsaauthentication", oUnsupported },
189: { "compressionlevel", oUnsupported },
1.266 djm 190:
191: /* Sometimes-unsupported options */
192: #if defined(GSSAPI)
193: { "gssapiauthentication", oGssAuthentication },
194: { "gssapidelegatecredentials", oGssDelegateCreds },
195: # else
196: { "gssapiauthentication", oUnsupported },
197: { "gssapidelegatecredentials", oUnsupported },
198: #endif
199: #ifdef ENABLE_PKCS11
1.304 djm 200: { "pkcs11provider", oPKCS11Provider },
1.266 djm 201: { "smartcarddevice", oPKCS11Provider },
202: # else
203: { "smartcarddevice", oUnsupported },
204: { "pkcs11provider", oUnsupported },
205: #endif
206:
1.17 markus 207: { "forwardagent", oForwardAgent },
208: { "forwardx11", oForwardX11 },
1.123 markus 209: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 210: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 211: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 212: { "xauthlocation", oXAuthLocation },
1.17 markus 213: { "gatewayports", oGatewayPorts },
214: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 215: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
216: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.50 markus 217: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 218: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 219: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 220: { "challengeresponseauthentication", oChallengeResponseAuthentication },
221: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
222: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.17 markus 223: { "identityfile", oIdentityFile },
1.174 stevesk 224: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 225: { "identitiesonly", oIdentitiesOnly },
1.241 djm 226: { "certificatefile", oCertificateFile },
1.246 jcs 227: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 228: { "identityagent", oIdentityAgent },
1.306 jmc 229: { "hostname", oHostname },
1.52 markus 230: { "hostkeyalias", oHostKeyAlias },
1.17 markus 231: { "proxycommand", oProxyCommand },
232: { "port", oPort },
1.25 markus 233: { "ciphers", oCiphers },
1.62 markus 234: { "macs", oMacs },
1.17 markus 235: { "remoteforward", oRemoteForward },
236: { "localforward", oLocalForward },
1.351 markus 237: { "permitremoteopen", oPermitRemoteOpen },
1.17 markus 238: { "user", oUser },
239: { "host", oHost },
1.206 djm 240: { "match", oMatch },
1.17 markus 241: { "escapechar", oEscapeChar },
242: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 243: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 244: { "connectionattempts", oConnectionAttempts },
245: { "batchmode", oBatchMode },
246: { "checkhostip", oCheckHostIP },
247: { "stricthostkeychecking", oStrictHostKeyChecking },
248: { "compression", oCompression },
1.126 markus 249: { "tcpkeepalive", oTCPKeepAlive },
250: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 251: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 252: { "syslogfacility", oLogFacility },
1.17 markus 253: { "loglevel", oLogLevel },
1.339 djm 254: { "logverbose", oLogVerbose },
1.71 markus 255: { "dynamicforward", oDynamicForward },
1.67 markus 256: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 257: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 258: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 259: { "bindaddress", oBindAddress },
1.282 djm 260: { "bindinterface", oBindInterface },
1.93 deraadt 261: { "clearallforwardings", oClearAllForwardings },
1.101 markus 262: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 263: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 264: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 265: { "rekeylimit", oRekeyLimit },
1.111 djm 266: { "connecttimeout", oConnectTimeout },
1.112 djm 267: { "addressfamily", oAddressFamily },
1.127 markus 268: { "serveraliveinterval", oServerAliveInterval },
269: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 270: { "sendenv", oSendEnv },
1.290 djm 271: { "setenv", oSetEnv },
1.132 djm 272: { "controlpath", oControlPath },
273: { "controlmaster", oControlMaster },
1.187 djm 274: { "controlpersist", oControlPersist },
1.136 djm 275: { "hashknownhosts", oHashKnownHosts },
1.252 djm 276: { "include", oInclude },
1.144 reyk 277: { "tunnel", oTunnel },
278: { "tunneldevice", oTunnelDevice },
279: { "localcommand", oLocalCommand },
280: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 281: { "remotecommand", oRemoteCommand },
1.167 grunk 282: { "visualhostkey", oVisualHostKey },
1.189 djm 283: { "kexalgorithms", oKexAlgorithms },
1.190 djm 284: { "ipqos", oIPQoS },
1.192 djm 285: { "requesttty", oRequestTTY },
1.205 djm 286: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 287: { "canonicaldomains", oCanonicalDomains },
1.209 djm 288: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
289: { "canonicalizehostname", oCanonicalizeHostname },
290: { "canonicalizemaxdots", oCanonicalizeMaxDots },
291: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 292: { "streamlocalbindmask", oStreamLocalBindMask },
293: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 294: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 295: { "fingerprinthash", oFingerprintHash },
1.229 djm 296: { "updatehostkeys", oUpdateHostkeys },
1.352 dtucker 297: { "hostbasedalgorithms", oHostbasedAcceptedAlgorithms },
1.350 dtucker 298: { "hostbasedkeytypes", oHostbasedAcceptedAlgorithms }, /* obsolete */
1.352 dtucker 299: { "pubkeyacceptedalgorithms", oPubkeyAcceptedAlgorithms },
1.349 dtucker 300: { "pubkeyacceptedkeytypes", oPubkeyAcceptedAlgorithms }, /* obsolete */
1.199 djm 301: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 302: { "proxyjump", oProxyJump },
1.318 dtucker 303: { "securitykeyprovider", oSecurityKeyProvider },
1.346 djm 304: { "knownhostscommand", oKnownHostsCommand },
1.171 djm 305:
1.92 stevesk 306: { NULL, oBadOption }
1.13 markus 307: };
308:
1.351 markus 309: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 310:
311: const char *
312: kex_default_pk_alg(void)
313: {
1.344 djm 314: static char *pkalgs;
315:
316: if (pkalgs == NULL) {
317: char *all_key;
318:
319: all_key = sshkey_alg_list(0, 0, 1, ',');
320: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
321: free(all_key);
322: }
323: return pkalgs;
1.320 dtucker 324: }
325:
1.327 dtucker 326: char *
327: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
328: const char *user)
329: {
330: struct ssh_digest_ctx *md;
331: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
332:
333: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
334: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
335: ssh_digest_update(md, host, strlen(host)) < 0 ||
336: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
337: ssh_digest_update(md, user, strlen(user)) < 0 ||
338: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 339: fatal_f("mux digest failed");
1.327 dtucker 340: ssh_digest_free(md);
341: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
342: }
343:
1.19 markus 344: /*
345: * Adds a local TCP/IP port forward to options. Never returns if there is an
346: * error.
347: */
1.1 deraadt 348:
1.26 markus 349: void
1.220 millert 350: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 351: {
1.220 millert 352: struct Forward *fwd;
1.251 djm 353: int i;
1.185 djm 354:
1.251 djm 355: /* Don't add duplicates */
356: for (i = 0; i < options->num_local_forwards; i++) {
357: if (forward_equals(newfwd, options->local_forwards + i))
358: return;
359: }
1.234 deraadt 360: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 361: options->num_local_forwards + 1,
362: sizeof(*options->local_forwards));
1.17 markus 363: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 364:
1.172 stevesk 365: fwd->listen_host = newfwd->listen_host;
1.135 djm 366: fwd->listen_port = newfwd->listen_port;
1.220 millert 367: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 368: fwd->connect_host = newfwd->connect_host;
1.135 djm 369: fwd->connect_port = newfwd->connect_port;
1.220 millert 370: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 371: }
372:
1.19 markus 373: /*
374: * Adds a remote TCP/IP port forward to options. Never returns if there is
375: * an error.
376: */
1.1 deraadt 377:
1.26 markus 378: void
1.220 millert 379: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 380: {
1.220 millert 381: struct Forward *fwd;
1.251 djm 382: int i;
1.185 djm 383:
1.251 djm 384: /* Don't add duplicates */
385: for (i = 0; i < options->num_remote_forwards; i++) {
386: if (forward_equals(newfwd, options->remote_forwards + i))
387: return;
388: }
1.234 deraadt 389: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 390: options->num_remote_forwards + 1,
391: sizeof(*options->remote_forwards));
1.17 markus 392: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 393:
1.172 stevesk 394: fwd->listen_host = newfwd->listen_host;
1.135 djm 395: fwd->listen_port = newfwd->listen_port;
1.220 millert 396: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 397: fwd->connect_host = newfwd->connect_host;
1.135 djm 398: fwd->connect_port = newfwd->connect_port;
1.220 millert 399: fwd->connect_path = newfwd->connect_path;
1.194 markus 400: fwd->handle = newfwd->handle;
1.184 markus 401: fwd->allocated_port = 0;
1.1 deraadt 402: }
403:
1.90 stevesk 404: static void
405: clear_forwardings(Options *options)
406: {
407: int i;
408:
1.135 djm 409: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 410: free(options->local_forwards[i].listen_host);
1.220 millert 411: free(options->local_forwards[i].listen_path);
1.202 djm 412: free(options->local_forwards[i].connect_host);
1.220 millert 413: free(options->local_forwards[i].connect_path);
1.135 djm 414: }
1.185 djm 415: if (options->num_local_forwards > 0) {
1.202 djm 416: free(options->local_forwards);
1.185 djm 417: options->local_forwards = NULL;
418: }
1.90 stevesk 419: options->num_local_forwards = 0;
1.135 djm 420: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 421: free(options->remote_forwards[i].listen_host);
1.220 millert 422: free(options->remote_forwards[i].listen_path);
1.202 djm 423: free(options->remote_forwards[i].connect_host);
1.220 millert 424: free(options->remote_forwards[i].connect_path);
1.135 djm 425: }
1.185 djm 426: if (options->num_remote_forwards > 0) {
1.202 djm 427: free(options->remote_forwards);
1.185 djm 428: options->remote_forwards = NULL;
429: }
1.90 stevesk 430: options->num_remote_forwards = 0;
1.145 reyk 431: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 432: }
433:
1.195 dtucker 434: void
1.241 djm 435: add_certificate_file(Options *options, const char *path, int userprovided)
436: {
437: int i;
438:
439: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
440: fatal("Too many certificate files specified (max %d)",
441: SSH_MAX_CERTIFICATE_FILES);
442:
443: /* Avoid registering duplicates */
444: for (i = 0; i < options->num_certificate_files; i++) {
445: if (options->certificate_file_userprovided[i] == userprovided &&
446: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 447: debug2_f("ignoring duplicate key %s", path);
1.241 djm 448: return;
449: }
450: }
451:
452: options->certificate_file_userprovided[options->num_certificate_files] =
453: userprovided;
454: options->certificate_files[options->num_certificate_files++] =
455: xstrdup(path);
456: }
457:
458: void
1.195 dtucker 459: add_identity_file(Options *options, const char *dir, const char *filename,
460: int userprovided)
461: {
462: char *path;
1.219 djm 463: int i;
1.195 dtucker 464:
465: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
466: fatal("Too many identity files specified (max %d)",
467: SSH_MAX_IDENTITY_FILES);
468:
469: if (dir == NULL) /* no dir, filename is absolute */
470: path = xstrdup(filename);
1.276 djm 471: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
472: fatal("Identity file path %s too long", path);
1.219 djm 473:
474: /* Avoid registering duplicates */
475: for (i = 0; i < options->num_identity_files; i++) {
476: if (options->identity_file_userprovided[i] == userprovided &&
477: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 478: debug2_f("ignoring duplicate key %s", path);
1.219 djm 479: free(path);
480: return;
481: }
482: }
1.195 dtucker 483:
484: options->identity_file_userprovided[options->num_identity_files] =
485: userprovided;
486: options->identity_files[options->num_identity_files++] = path;
487: }
488:
1.206 djm 489: int
490: default_ssh_port(void)
491: {
492: static int port;
493: struct servent *sp;
494:
495: if (port == 0) {
496: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
497: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
498: }
499: return port;
500: }
501:
502: /*
503: * Execute a command in a shell.
504: * Return its exit status or -1 on abnormal exit.
505: */
506: static int
507: execute_in_shell(const char *cmd)
508: {
1.243 dtucker 509: char *shell;
1.206 djm 510: pid_t pid;
1.337 djm 511: int status;
1.206 djm 512:
513: if ((shell = getenv("SHELL")) == NULL)
514: shell = _PATH_BSHELL;
1.308 djm 515:
516: if (access(shell, X_OK) == -1) {
517: fatal("Shell \"%s\" is not executable: %s",
518: shell, strerror(errno));
519: }
1.206 djm 520:
521: debug("Executing command: '%.500s'", cmd);
522:
523: /* Fork and execute the command. */
524: if ((pid = fork()) == 0) {
1.245 djm 525: char *argv[4];
1.206 djm 526:
1.337 djm 527: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 528: fatal_f("stdfd_devnull failed");
1.206 djm 529: closefrom(STDERR_FILENO + 1);
1.245 djm 530:
531: argv[0] = shell;
532: argv[1] = "-c";
533: argv[2] = xstrdup(cmd);
534: argv[3] = NULL;
1.206 djm 535:
536: execv(argv[0], argv);
537: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
538: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 539: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 540: kill(getpid(), SIGTERM);
541: _exit(1);
542: }
543: /* Parent. */
1.307 deraadt 544: if (pid == -1)
1.340 djm 545: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 546:
547: while (waitpid(pid, &status, 0) == -1) {
548: if (errno != EINTR && errno != EAGAIN)
1.340 djm 549: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 550: }
551: if (!WIFEXITED(status)) {
552: error("command '%.100s' exited abnormally", cmd);
553: return -1;
1.221 djm 554: }
1.206 djm 555: debug3("command returned status %d", WEXITSTATUS(status));
556: return WEXITSTATUS(status);
557: }
558:
559: /*
560: * Parse and execute a Match directive.
561: */
562: static int
563: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 564: const char *host_arg, const char *original_host, int final_pass,
565: int *want_final_pass, const char *filename, int linenum)
1.206 djm 566: {
1.221 djm 567: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 568: const char *ruser;
1.221 djm 569: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 570: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 571: char uidstr[32];
1.206 djm 572:
573: /*
574: * Configuration is likely to be incomplete at this point so we
575: * must be prepared to use default values.
576: */
577: port = options->port <= 0 ? default_ssh_port() : options->port;
578: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 579: if (final_pass) {
1.250 djm 580: host = xstrdup(options->hostname);
581: } else if (options->hostname != NULL) {
1.212 djm 582: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 583: host = percent_expand(options->hostname,
584: "h", host_arg, (char *)NULL);
1.250 djm 585: } else {
1.211 djm 586: host = xstrdup(host_arg);
1.250 djm 587: }
1.206 djm 588:
1.221 djm 589: debug2("checking match for '%s' host %s originally %s",
590: cp, host, original_host);
591: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
592: criteria = NULL;
593: this_result = 1;
594: if ((negate = attrib[0] == '!'))
595: attrib++;
596: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 597: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 598: if (attributes > 1 ||
1.213 dtucker 599: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 600: error("%.200s line %d: '%s' cannot be combined "
601: "with other Match attributes",
602: filename, linenum, oattrib);
1.213 dtucker 603: result = -1;
604: goto out;
605: }
1.221 djm 606: if (result)
607: result = negate ? 0 : 1;
1.213 dtucker 608: goto out;
609: }
1.221 djm 610: attributes++;
1.302 djm 611: if (strcasecmp(attrib, "canonical") == 0 ||
612: strcasecmp(attrib, "final") == 0) {
613: /*
614: * If the config requests "Match final" then remember
615: * this so we can perform a second pass later.
616: */
617: if (strcasecmp(attrib, "final") == 0 &&
618: want_final_pass != NULL)
619: *want_final_pass = 1;
620: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 621: if (r == (negate ? 1 : 0))
622: this_result = result = 0;
623: debug3("%.200s line %d: %smatched '%s'",
624: filename, linenum,
625: this_result ? "" : "not ", oattrib);
626: continue;
627: }
628: /* All other criteria require an argument */
1.206 djm 629: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
630: error("Missing Match criteria for %s", attrib);
1.211 djm 631: result = -1;
632: goto out;
1.206 djm 633: }
634: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 635: criteria = xstrdup(host);
1.235 djm 636: r = match_hostname(host, arg) == 1;
1.221 djm 637: if (r == (negate ? 1 : 0))
638: this_result = result = 0;
1.206 djm 639: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 640: criteria = xstrdup(original_host);
1.235 djm 641: r = match_hostname(original_host, arg) == 1;
1.221 djm 642: if (r == (negate ? 1 : 0))
643: this_result = result = 0;
1.206 djm 644: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 645: criteria = xstrdup(ruser);
1.235 djm 646: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 647: if (r == (negate ? 1 : 0))
648: this_result = result = 0;
1.206 djm 649: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 650: criteria = xstrdup(pw->pw_name);
1.235 djm 651: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 652: if (r == (negate ? 1 : 0))
653: this_result = result = 0;
1.210 djm 654: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 655: char *conn_hash_hex, *keyalias;
1.327 dtucker 656:
1.206 djm 657: if (gethostname(thishost, sizeof(thishost)) == -1)
658: fatal("gethostname: %s", strerror(errno));
659: strlcpy(shorthost, thishost, sizeof(shorthost));
660: shorthost[strcspn(thishost, ".")] = '\0';
661: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 662: snprintf(uidstr, sizeof(uidstr), "%llu",
663: (unsigned long long)pw->pw_uid);
1.327 dtucker 664: conn_hash_hex = ssh_connection_hash(thishost, host,
1.353 ! djm 665: portstr, ruser);
1.333 dtucker 666: keyalias = options->host_key_alias ?
667: options->host_key_alias : host;
1.206 djm 668:
669: cmd = percent_expand(arg,
1.327 dtucker 670: "C", conn_hash_hex,
1.206 djm 671: "L", shorthost,
672: "d", pw->pw_dir,
673: "h", host,
1.333 dtucker 674: "k", keyalias,
1.206 djm 675: "l", thishost,
1.221 djm 676: "n", original_host,
1.206 djm 677: "p", portstr,
678: "r", ruser,
679: "u", pw->pw_name,
1.288 djm 680: "i", uidstr,
1.206 djm 681: (char *)NULL);
1.327 dtucker 682: free(conn_hash_hex);
1.217 djm 683: if (result != 1) {
684: /* skip execution if prior predicate failed */
1.221 djm 685: debug3("%.200s line %d: skipped exec "
686: "\"%.100s\"", filename, linenum, cmd);
687: free(cmd);
688: continue;
689: }
690: r = execute_in_shell(cmd);
691: if (r == -1) {
692: fatal("%.200s line %d: match exec "
693: "'%.100s' error", filename,
694: linenum, cmd);
1.217 djm 695: }
1.221 djm 696: criteria = xstrdup(cmd);
1.206 djm 697: free(cmd);
1.221 djm 698: /* Force exit status to boolean */
699: r = r == 0;
700: if (r == (negate ? 1 : 0))
701: this_result = result = 0;
1.206 djm 702: } else {
703: error("Unsupported Match attribute %s", attrib);
1.211 djm 704: result = -1;
705: goto out;
1.206 djm 706: }
1.221 djm 707: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
708: filename, linenum, this_result ? "": "not ",
709: oattrib, criteria);
710: free(criteria);
1.213 dtucker 711: }
712: if (attributes == 0) {
713: error("One or more attributes required for Match");
714: result = -1;
715: goto out;
1.206 djm 716: }
1.221 djm 717: out:
718: if (result != -1)
719: debug2("match %sfound", result ? "" : "not ");
1.206 djm 720: *condition = cp;
1.211 djm 721: free(host);
1.206 djm 722: return result;
723: }
724:
1.286 djm 725: /* Remove environment variable by pattern */
726: static void
727: rm_env(Options *options, const char *arg, const char *filename, int linenum)
728: {
1.330 djm 729: int i, j, onum_send_env = options->num_send_env;
1.286 djm 730: char *cp;
731:
732: /* Remove an environment variable */
733: for (i = 0; i < options->num_send_env; ) {
734: cp = xstrdup(options->send_env[i]);
735: if (!match_pattern(cp, arg + 1)) {
736: free(cp);
737: i++;
738: continue;
739: }
740: debug3("%s line %d: removing environment %s",
741: filename, linenum, cp);
742: free(cp);
743: free(options->send_env[i]);
744: options->send_env[i] = NULL;
745: for (j = i; j < options->num_send_env - 1; j++) {
746: options->send_env[j] = options->send_env[j + 1];
747: options->send_env[j + 1] = NULL;
748: }
749: options->num_send_env--;
750: /* NB. don't increment i */
1.330 djm 751: }
752: if (onum_send_env != options->num_send_env) {
753: options->send_env = xrecallocarray(options->send_env,
754: onum_send_env, options->num_send_env,
755: sizeof(*options->send_env));
1.286 djm 756: }
757: }
758:
1.19 markus 759: /*
1.70 stevesk 760: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 761: */
1.26 markus 762: static OpCodes
1.199 djm 763: parse_token(const char *cp, const char *filename, int linenum,
764: const char *ignored_unknown)
1.1 deraadt 765: {
1.199 djm 766: int i;
1.1 deraadt 767:
1.17 markus 768: for (i = 0; keywords[i].name; i++)
1.199 djm 769: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 770: return keywords[i].opcode;
1.235 djm 771: if (ignored_unknown != NULL &&
772: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 773: return oIgnoredUnknownOption;
1.75 stevesk 774: error("%s: line %d: Bad configuration option: %s",
775: filename, linenum, cp);
1.17 markus 776: return oBadOption;
1.1 deraadt 777: }
778:
1.207 djm 779: /* Multistate option parsing */
780: struct multistate {
781: char *key;
782: int value;
783: };
784: static const struct multistate multistate_flag[] = {
785: { "true", 1 },
786: { "false", 0 },
787: { "yes", 1 },
788: { "no", 0 },
789: { NULL, -1 }
790: };
791: static const struct multistate multistate_yesnoask[] = {
792: { "true", 1 },
793: { "false", 0 },
794: { "yes", 1 },
795: { "no", 0 },
796: { "ask", 2 },
797: { NULL, -1 }
798: };
1.278 djm 799: static const struct multistate multistate_strict_hostkey[] = {
800: { "true", SSH_STRICT_HOSTKEY_YES },
801: { "false", SSH_STRICT_HOSTKEY_OFF },
802: { "yes", SSH_STRICT_HOSTKEY_YES },
803: { "no", SSH_STRICT_HOSTKEY_OFF },
804: { "ask", SSH_STRICT_HOSTKEY_ASK },
805: { "off", SSH_STRICT_HOSTKEY_OFF },
806: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
807: { NULL, -1 }
808: };
1.246 jcs 809: static const struct multistate multistate_yesnoaskconfirm[] = {
810: { "true", 1 },
811: { "false", 0 },
812: { "yes", 1 },
813: { "no", 0 },
814: { "ask", 2 },
815: { "confirm", 3 },
816: { NULL, -1 }
817: };
1.207 djm 818: static const struct multistate multistate_addressfamily[] = {
819: { "inet", AF_INET },
820: { "inet6", AF_INET6 },
821: { "any", AF_UNSPEC },
822: { NULL, -1 }
823: };
824: static const struct multistate multistate_controlmaster[] = {
825: { "true", SSHCTL_MASTER_YES },
826: { "yes", SSHCTL_MASTER_YES },
827: { "false", SSHCTL_MASTER_NO },
828: { "no", SSHCTL_MASTER_NO },
829: { "auto", SSHCTL_MASTER_AUTO },
830: { "ask", SSHCTL_MASTER_ASK },
831: { "autoask", SSHCTL_MASTER_AUTO_ASK },
832: { NULL, -1 }
833: };
834: static const struct multistate multistate_tunnel[] = {
835: { "ethernet", SSH_TUNMODE_ETHERNET },
836: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
837: { "true", SSH_TUNMODE_DEFAULT },
838: { "yes", SSH_TUNMODE_DEFAULT },
839: { "false", SSH_TUNMODE_NO },
840: { "no", SSH_TUNMODE_NO },
841: { NULL, -1 }
842: };
843: static const struct multistate multistate_requesttty[] = {
844: { "true", REQUEST_TTY_YES },
845: { "yes", REQUEST_TTY_YES },
846: { "false", REQUEST_TTY_NO },
847: { "no", REQUEST_TTY_NO },
848: { "force", REQUEST_TTY_FORCE },
849: { "auto", REQUEST_TTY_AUTO },
850: { NULL, -1 }
851: };
1.209 djm 852: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 853: { "true", SSH_CANONICALISE_YES },
854: { "false", SSH_CANONICALISE_NO },
855: { "yes", SSH_CANONICALISE_YES },
856: { "no", SSH_CANONICALISE_NO },
857: { "always", SSH_CANONICALISE_ALWAYS },
858: { NULL, -1 }
859: };
1.322 dtucker 860: static const struct multistate multistate_compression[] = {
861: #ifdef WITH_ZLIB
862: { "yes", COMP_ZLIB },
863: #endif
864: { "no", COMP_NONE },
865: { NULL, -1 }
866: };
1.207 djm 867:
1.334 djm 868: static int
869: parse_multistate_value(const char *arg, const char *filename, int linenum,
870: const struct multistate *multistate_ptr)
871: {
872: int i;
873:
1.344 djm 874: if (!arg || *arg == '\0') {
875: error("%s line %d: missing argument.", filename, linenum);
876: return -1;
877: }
1.334 djm 878: for (i = 0; multistate_ptr[i].key != NULL; i++) {
879: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
880: return multistate_ptr[i].value;
881: }
882: return -1;
883: }
884:
1.19 markus 885: /*
886: * Processes a single option line as used in the configuration files. This
887: * only sets those values that have not already been set.
888: */
1.14 markus 889: int
1.206 djm 890: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 891: const char *original_host, char *line, const char *filename,
892: int linenum, int *activep, int flags)
1.1 deraadt 893: {
1.252 djm 894: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 895: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 896: }
897:
898: #define WHITESPACE " \t\r\n"
899: static int
900: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
901: const char *original_host, char *line, const char *filename,
1.302 djm 902: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 903: {
1.351 markus 904: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2, *p, ch;
1.339 djm 905: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 906: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 907: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 908: int remotefwd, dynamicfwd;
1.164 dtucker 909: LogLevel *log_level_ptr;
1.271 dtucker 910: SyslogFacility *log_facility_ptr;
1.201 dtucker 911: long long val64;
1.102 markus 912: size_t len;
1.220 millert 913: struct Forward fwd;
1.207 djm 914: const struct multistate *multistate_ptr;
1.208 djm 915: struct allowed_cname *cname;
1.252 djm 916: glob_t gl;
1.281 dtucker 917: const char *errstr;
1.106 djm 918:
1.206 djm 919: if (activep == NULL) { /* We are processing a command line directive */
920: cmdline = 1;
921: activep = &cmdline;
922: }
923:
1.267 djm 924: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 925: if ((len = strlen(line)) == 0)
926: return 0;
927: for (len--; len > 0; len--) {
1.267 djm 928: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 929: break;
930: line[len] = '\0';
931: }
1.1 deraadt 932:
1.42 provos 933: s = line;
934: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 935: if ((keyword = strdelim(&s)) == NULL)
936: return 0;
1.42 provos 937: /* Ignore leading whitespace. */
938: if (*keyword == '\0')
1.43 markus 939: keyword = strdelim(&s);
1.56 deraadt 940: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 941: return 0;
1.199 djm 942: /* Match lowercase keyword */
1.207 djm 943: lowercase(keyword);
1.17 markus 944:
1.199 djm 945: opcode = parse_token(keyword, filename, linenum,
946: options->ignored_unknown);
1.17 markus 947:
948: switch (opcode) {
949: case oBadOption:
1.19 markus 950: /* don't panic, but count bad options */
951: return -1;
1.273 djm 952: case oIgnore:
953: return 0;
1.199 djm 954: case oIgnoredUnknownOption:
955: debug("%s line %d: Ignored unknown option \"%s\"",
956: filename, linenum, keyword);
957: return 0;
1.111 djm 958: case oConnectTimeout:
959: intptr = &options->connection_timeout;
1.127 markus 960: parse_time:
1.111 djm 961: arg = strdelim(&s);
1.344 djm 962: if (!arg || *arg == '\0') {
963: error("%s line %d: missing time value.",
1.111 djm 964: filename, linenum);
1.344 djm 965: return -1;
966: }
1.221 djm 967: if (strcmp(arg, "none") == 0)
968: value = -1;
1.344 djm 969: else if ((value = convtime(arg)) == -1) {
970: error("%s line %d: invalid time value.",
1.111 djm 971: filename, linenum);
1.344 djm 972: return -1;
973: }
1.160 dtucker 974: if (*activep && *intptr == -1)
1.111 djm 975: *intptr = value;
976: break;
977:
1.17 markus 978: case oForwardAgent:
979: intptr = &options->forward_agent;
1.319 djm 980:
981: arg = strdelim(&s);
1.344 djm 982: if (!arg || *arg == '\0') {
983: error("%s line %d: missing argument.",
1.319 djm 984: filename, linenum);
1.344 djm 985: return -1;
986: }
1.319 djm 987:
988: value = -1;
989: multistate_ptr = multistate_flag;
990: for (i = 0; multistate_ptr[i].key != NULL; i++) {
991: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
992: value = multistate_ptr[i].value;
993: break;
994: }
995: }
996: if (value != -1) {
997: if (*activep && *intptr == -1)
998: *intptr = value;
999: break;
1000: }
1001: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1002: if (*activep && *intptr == -1)
1003: *intptr = 1;
1004:
1005: charptr = &options->forward_agent_sock_path;
1006: goto parse_agent_path;
1007:
1008: case oForwardX11:
1009: intptr = &options->forward_x11;
1.207 djm 1010: parse_flag:
1011: multistate_ptr = multistate_flag;
1012: parse_multistate:
1.42 provos 1013: arg = strdelim(&s);
1.334 djm 1014: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 ! djm 1015: multistate_ptr)) == -1) {
1.344 djm 1016: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1017: filename, linenum, arg);
1.344 djm 1018: return -1;
1.334 djm 1019: }
1.17 markus 1020: if (*activep && *intptr == -1)
1021: *intptr = value;
1022: break;
1023:
1.123 markus 1024: case oForwardX11Trusted:
1025: intptr = &options->forward_x11_trusted;
1026: goto parse_flag;
1.221 djm 1027:
1.186 djm 1028: case oForwardX11Timeout:
1029: intptr = &options->forward_x11_timeout;
1030: goto parse_time;
1.123 markus 1031:
1.17 markus 1032: case oGatewayPorts:
1.220 millert 1033: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1034: goto parse_flag;
1035:
1.153 markus 1036: case oExitOnForwardFailure:
1037: intptr = &options->exit_on_forward_failure;
1038: goto parse_flag;
1039:
1.17 markus 1040: case oPasswordAuthentication:
1041: intptr = &options->password_authentication;
1042: goto parse_flag;
1043:
1.48 markus 1044: case oKbdInteractiveAuthentication:
1045: intptr = &options->kbd_interactive_authentication;
1046: goto parse_flag;
1047:
1048: case oKbdInteractiveDevices:
1049: charptr = &options->kbd_interactive_devices;
1050: goto parse_string;
1051:
1.50 markus 1052: case oPubkeyAuthentication:
1053: intptr = &options->pubkey_authentication;
1.30 markus 1054: goto parse_flag;
1055:
1.72 markus 1056: case oHostbasedAuthentication:
1057: intptr = &options->hostbased_authentication;
1058: goto parse_flag;
1059:
1.59 markus 1060: case oChallengeResponseAuthentication:
1.78 markus 1061: intptr = &options->challenge_response_authentication;
1.17 markus 1062: goto parse_flag;
1.108 jakob 1063:
1.118 markus 1064: case oGssAuthentication:
1065: intptr = &options->gss_authentication;
1066: goto parse_flag;
1067:
1068: case oGssDelegateCreds:
1069: intptr = &options->gss_deleg_creds;
1070: goto parse_flag;
1071:
1.17 markus 1072: case oBatchMode:
1073: intptr = &options->batch_mode;
1074: goto parse_flag;
1075:
1076: case oCheckHostIP:
1077: intptr = &options->check_host_ip;
1.167 grunk 1078: goto parse_flag;
1.17 markus 1079:
1.107 jakob 1080: case oVerifyHostKeyDNS:
1081: intptr = &options->verify_host_key_dns;
1.207 djm 1082: multistate_ptr = multistate_yesnoask;
1083: goto parse_multistate;
1.107 jakob 1084:
1.17 markus 1085: case oStrictHostKeyChecking:
1086: intptr = &options->strict_host_key_checking;
1.278 djm 1087: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1088: goto parse_multistate;
1.17 markus 1089:
1090: case oCompression:
1091: intptr = &options->compression;
1.322 dtucker 1092: multistate_ptr = multistate_compression;
1093: goto parse_multistate;
1.17 markus 1094:
1.126 markus 1095: case oTCPKeepAlive:
1096: intptr = &options->tcp_keep_alive;
1.17 markus 1097: goto parse_flag;
1098:
1.91 markus 1099: case oNoHostAuthenticationForLocalhost:
1100: intptr = &options->no_host_authentication_for_localhost;
1101: goto parse_flag;
1102:
1.17 markus 1103: case oNumberOfPasswordPrompts:
1104: intptr = &options->number_of_password_prompts;
1105: goto parse_int;
1106:
1.105 markus 1107: case oRekeyLimit:
1108: arg = strdelim(&s);
1.344 djm 1109: if (!arg || *arg == '\0') {
1110: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1111: linenum);
1.344 djm 1112: return -1;
1113: }
1.198 dtucker 1114: if (strcmp(arg, "default") == 0) {
1115: val64 = 0;
1116: } else {
1.344 djm 1117: if (scan_scaled(arg, &val64) == -1) {
1118: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1119: filename, linenum, arg, strerror(errno));
1.344 djm 1120: return -1;
1121: }
1122: if (val64 != 0 && val64 < 16) {
1123: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1124: filename, linenum);
1.344 djm 1125: return -1;
1126: }
1.105 markus 1127: }
1.165 djm 1128: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1129: options->rekey_limit = val64;
1.198 dtucker 1130: if (s != NULL) { /* optional rekey interval present */
1131: if (strcmp(s, "none") == 0) {
1132: (void)strdelim(&s); /* discard */
1133: break;
1134: }
1135: intptr = &options->rekey_interval;
1136: goto parse_time;
1137: }
1.105 markus 1138: break;
1139:
1.17 markus 1140: case oIdentityFile:
1.42 provos 1141: arg = strdelim(&s);
1.344 djm 1142: if (!arg || *arg == '\0') {
1143: error("%.200s line %d: Missing argument.",
1144: filename, linenum);
1145: return -1;
1146: }
1.17 markus 1147: if (*activep) {
1.50 markus 1148: intptr = &options->num_identity_files;
1.344 djm 1149: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1150: error("%.200s line %d: Too many identity files "
1151: "specified (max %d).", filename, linenum,
1152: SSH_MAX_IDENTITY_FILES);
1153: return -1;
1154: }
1.221 djm 1155: add_identity_file(options, NULL,
1156: arg, flags & SSHCONF_USERCONF);
1.17 markus 1157: }
1158: break;
1159:
1.241 djm 1160: case oCertificateFile:
1161: arg = strdelim(&s);
1.344 djm 1162: if (!arg || *arg == '\0') {
1163: error("%.200s line %d: Missing argument.",
1.241 djm 1164: filename, linenum);
1.344 djm 1165: return -1;
1166: }
1.241 djm 1167: if (*activep) {
1168: intptr = &options->num_certificate_files;
1169: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1170: error("%.200s line %d: Too many certificate "
1.241 djm 1171: "files specified (max %d).",
1172: filename, linenum,
1173: SSH_MAX_CERTIFICATE_FILES);
1.344 djm 1174: return -1;
1.241 djm 1175: }
1176: add_certificate_file(options, arg,
1177: flags & SSHCONF_USERCONF);
1178: }
1179: break;
1180:
1.34 markus 1181: case oXAuthLocation:
1182: charptr=&options->xauth_location;
1183: goto parse_string;
1184:
1.17 markus 1185: case oUser:
1186: charptr = &options->user;
1187: parse_string:
1.42 provos 1188: arg = strdelim(&s);
1.344 djm 1189: if (!arg || *arg == '\0') {
1190: error("%.200s line %d: Missing argument.",
1.193 djm 1191: filename, linenum);
1.344 djm 1192: return -1;
1193: }
1.17 markus 1194: if (*activep && *charptr == NULL)
1.38 provos 1195: *charptr = xstrdup(arg);
1.17 markus 1196: break;
1197:
1198: case oGlobalKnownHostsFile:
1.193 djm 1199: cpptr = (char **)&options->system_hostfiles;
1200: uintptr = &options->num_system_hostfiles;
1201: max_entries = SSH_MAX_HOSTS_FILES;
1202: parse_char_array:
1203: if (*activep && *uintptr == 0) {
1204: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.344 djm 1205: if ((*uintptr) >= max_entries) {
1206: error("%s line %d: too many known "
1207: "hosts files.", filename, linenum);
1208: return -1;
1209: }
1.193 djm 1210: cpptr[(*uintptr)++] = xstrdup(arg);
1211: }
1212: }
1213: return 0;
1.17 markus 1214:
1215: case oUserKnownHostsFile:
1.193 djm 1216: cpptr = (char **)&options->user_hostfiles;
1217: uintptr = &options->num_user_hostfiles;
1218: max_entries = SSH_MAX_HOSTS_FILES;
1219: goto parse_char_array;
1.27 markus 1220:
1.306 jmc 1221: case oHostname:
1.17 markus 1222: charptr = &options->hostname;
1223: goto parse_string;
1224:
1.52 markus 1225: case oHostKeyAlias:
1226: charptr = &options->host_key_alias;
1227: goto parse_string;
1228:
1.67 markus 1229: case oPreferredAuthentications:
1230: charptr = &options->preferred_authentications;
1231: goto parse_string;
1232:
1.77 markus 1233: case oBindAddress:
1234: charptr = &options->bind_address;
1235: goto parse_string;
1236:
1.282 djm 1237: case oBindInterface:
1238: charptr = &options->bind_interface;
1239: goto parse_string;
1240:
1.183 markus 1241: case oPKCS11Provider:
1242: charptr = &options->pkcs11_provider;
1.86 markus 1243: goto parse_string;
1.85 jakob 1244:
1.310 djm 1245: case oSecurityKeyProvider:
1246: charptr = &options->sk_provider;
1247: goto parse_string;
1248:
1.346 djm 1249: case oKnownHostsCommand:
1250: charptr = &options->known_hosts_command;
1251: goto parse_command;
1252:
1.17 markus 1253: case oProxyCommand:
1.144 reyk 1254: charptr = &options->proxy_command;
1.257 djm 1255: /* Ignore ProxyCommand if ProxyJump already specified */
1256: if (options->jump_host != NULL)
1257: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1258: parse_command:
1.344 djm 1259: if (s == NULL) {
1260: error("%.200s line %d: Missing argument.",
1261: filename, linenum);
1262: return -1;
1263: }
1.102 markus 1264: len = strspn(s, WHITESPACE "=");
1.17 markus 1265: if (*activep && *charptr == NULL)
1.102 markus 1266: *charptr = xstrdup(s + len);
1.17 markus 1267: return 0;
1268:
1.257 djm 1269: case oProxyJump:
1270: if (s == NULL) {
1.344 djm 1271: error("%.200s line %d: Missing argument.",
1.257 djm 1272: filename, linenum);
1.344 djm 1273: return -1;
1.257 djm 1274: }
1275: len = strspn(s, WHITESPACE "=");
1276: if (parse_jump(s + len, options, *activep) == -1) {
1.344 djm 1277: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.257 djm 1278: filename, linenum, s + len);
1.344 djm 1279: return -1;
1.257 djm 1280: }
1281: return 0;
1282:
1.17 markus 1283: case oPort:
1.300 naddy 1284: arg = strdelim(&s);
1.344 djm 1285: if (!arg || *arg == '\0') {
1286: error("%.200s line %d: Missing argument.",
1.300 naddy 1287: filename, linenum);
1.344 djm 1288: return -1;
1289: }
1.300 naddy 1290: value = a2port(arg);
1.344 djm 1291: if (value <= 0) {
1292: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1293: filename, linenum, arg);
1.344 djm 1294: return -1;
1295: }
1.300 naddy 1296: if (*activep && options->port == -1)
1297: options->port = value;
1298: break;
1299:
1300: case oConnectionAttempts:
1301: intptr = &options->connection_attempts;
1.17 markus 1302: parse_int:
1.42 provos 1303: arg = strdelim(&s);
1.344 djm 1304: if ((errstr = atoi_err(arg, &value)) != NULL) {
1305: error("%s line %d: integer value %s.",
1.281 dtucker 1306: filename, linenum, errstr);
1.344 djm 1307: return -1;
1308: }
1.17 markus 1309: if (*activep && *intptr == -1)
1310: *intptr = value;
1311: break;
1312:
1.25 markus 1313: case oCiphers:
1.42 provos 1314: arg = strdelim(&s);
1.344 djm 1315: if (!arg || *arg == '\0') {
1316: error("%.200s line %d: Missing argument.",
1317: filename, linenum);
1318: return -1;
1319: }
1.309 naddy 1320: if (*arg != '-' &&
1.344 djm 1321: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1322: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1323: filename, linenum, arg ? arg : "<NONE>");
1.344 djm 1324: return -1;
1325: }
1.25 markus 1326: if (*activep && options->ciphers == NULL)
1.38 provos 1327: options->ciphers = xstrdup(arg);
1.25 markus 1328: break;
1329:
1.62 markus 1330: case oMacs:
1331: arg = strdelim(&s);
1.344 djm 1332: if (!arg || *arg == '\0') {
1333: error("%.200s line %d: Missing argument.",
1334: filename, linenum);
1335: return -1;
1336: }
1.309 naddy 1337: if (*arg != '-' &&
1.344 djm 1338: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1339: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1340: filename, linenum, arg ? arg : "<NONE>");
1.344 djm 1341: return -1;
1342: }
1.62 markus 1343: if (*activep && options->macs == NULL)
1344: options->macs = xstrdup(arg);
1345: break;
1346:
1.189 djm 1347: case oKexAlgorithms:
1348: arg = strdelim(&s);
1.344 djm 1349: if (!arg || *arg == '\0') {
1350: error("%.200s line %d: Missing argument.",
1.189 djm 1351: filename, linenum);
1.344 djm 1352: return -1;
1353: }
1.268 djm 1354: if (*arg != '-' &&
1.309 naddy 1355: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1356: arg + 1 : arg)) {
1357: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1358: filename, linenum, arg ? arg : "<NONE>");
1.344 djm 1359: return -1;
1360: }
1.189 djm 1361: if (*activep && options->kex_algorithms == NULL)
1362: options->kex_algorithms = xstrdup(arg);
1363: break;
1364:
1.76 markus 1365: case oHostKeyAlgorithms:
1.238 markus 1366: charptr = &options->hostkeyalgorithms;
1.349 dtucker 1367: parse_pubkey_algos:
1.76 markus 1368: arg = strdelim(&s);
1.344 djm 1369: if (!arg || *arg == '\0') {
1370: error("%.200s line %d: Missing argument.",
1.238 markus 1371: filename, linenum);
1.344 djm 1372: return -1;
1373: }
1.268 djm 1374: if (*arg != '-' &&
1.309 naddy 1375: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.344 djm 1376: arg + 1 : arg, 1)) {
1377: error("%s line %d: Bad key types '%s'.",
1378: filename, linenum, arg ? arg : "<NONE>");
1379: return -1;
1380: }
1.238 markus 1381: if (*activep && *charptr == NULL)
1382: *charptr = xstrdup(arg);
1.76 markus 1383: break;
1384:
1.298 djm 1385: case oCASignatureAlgorithms:
1386: charptr = &options->ca_sign_algorithms;
1.349 dtucker 1387: goto parse_pubkey_algos;
1.298 djm 1388:
1.17 markus 1389: case oLogLevel:
1.164 dtucker 1390: log_level_ptr = &options->log_level;
1.42 provos 1391: arg = strdelim(&s);
1.38 provos 1392: value = log_level_number(arg);
1.344 djm 1393: if (value == SYSLOG_LEVEL_NOT_SET) {
1394: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1395: filename, linenum, arg ? arg : "<NONE>");
1.344 djm 1396: return -1;
1397: }
1.164 dtucker 1398: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1399: *log_level_ptr = (LogLevel) value;
1.17 markus 1400: break;
1401:
1.271 dtucker 1402: case oLogFacility:
1403: log_facility_ptr = &options->log_facility;
1404: arg = strdelim(&s);
1405: value = log_facility_number(arg);
1.344 djm 1406: if (value == SYSLOG_FACILITY_NOT_SET) {
1407: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1408: filename, linenum, arg ? arg : "<NONE>");
1.344 djm 1409: return -1;
1410: }
1.271 dtucker 1411: if (*log_facility_ptr == -1)
1412: *log_facility_ptr = (SyslogFacility) value;
1413: break;
1414:
1.339 djm 1415: case oLogVerbose:
1416: cppptr = &options->log_verbose;
1417: uintptr = &options->num_log_verbose;
1418: if (*activep && *uintptr == 0) {
1419: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1420: *cppptr = xrecallocarray(*cppptr, *uintptr,
1421: *uintptr + 1, sizeof(**cppptr));
1422: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1423: }
1424: }
1425: return 0;
1426:
1.88 stevesk 1427: case oLocalForward:
1.17 markus 1428: case oRemoteForward:
1.168 stevesk 1429: case oDynamicForward:
1.42 provos 1430: arg = strdelim(&s);
1.344 djm 1431: if (!arg || *arg == '\0') {
1432: error("%.200s line %d: Missing argument.",
1.88 stevesk 1433: filename, linenum);
1.344 djm 1434: return -1;
1435: }
1.135 djm 1436:
1.279 markus 1437: remotefwd = (opcode == oRemoteForward);
1438: dynamicfwd = (opcode == oDynamicForward);
1439:
1440: if (!dynamicfwd) {
1.168 stevesk 1441: arg2 = strdelim(&s);
1.279 markus 1442: if (arg2 == NULL || *arg2 == '\0') {
1443: if (remotefwd)
1444: dynamicfwd = 1;
1.344 djm 1445: else {
1446: error("%.200s line %d: Missing target "
1.279 markus 1447: "argument.", filename, linenum);
1.344 djm 1448: return -1;
1449: }
1.279 markus 1450: } else {
1451: /* construct a string for parse_forward */
1452: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1453: arg2);
1454: }
1455: }
1456: if (dynamicfwd)
1.168 stevesk 1457: strlcpy(fwdarg, arg, sizeof(fwdarg));
1458:
1.344 djm 1459: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1460: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1461: filename, linenum);
1.344 djm 1462: return -1;
1463: }
1.135 djm 1464:
1.88 stevesk 1465: if (*activep) {
1.279 markus 1466: if (remotefwd) {
1467: add_remote_forward(options, &fwd);
1468: } else {
1.135 djm 1469: add_local_forward(options, &fwd);
1.279 markus 1470: }
1.88 stevesk 1471: }
1.17 markus 1472: break;
1.71 markus 1473:
1.351 markus 1474: case oPermitRemoteOpen:
1475: uintptr = &options->num_permitted_remote_opens;
1476: cppptr = &options->permitted_remote_opens;
1477: arg = strdelim(&s);
1478: if (!arg || *arg == '\0')
1479: fatal("%s line %d: missing %s specification",
1480: filename, linenum, lookup_opcode_name(opcode));
1481: uvalue = *uintptr; /* modified later */
1482: if (strcmp(arg, "any") == 0 || strcmp(arg, "none") == 0) {
1483: if (*activep && uvalue == 0) {
1484: *uintptr = 1;
1485: *cppptr = xcalloc(1, sizeof(**cppptr));
1486: (*cppptr)[0] = xstrdup(arg);
1487: }
1488: break;
1489: }
1490: for (; arg != NULL && *arg != '\0'; arg = strdelim(&s)) {
1491: arg2 = xstrdup(arg);
1492: ch = '\0';
1493: p = hpdelim2(&arg, &ch);
1494: if (p == NULL || ch == '/') {
1495: fatal("%s line %d: missing host in %s",
1496: filename, linenum,
1497: lookup_opcode_name(opcode));
1498: }
1499: p = cleanhostname(p);
1500: /*
1501: * don't want to use permitopen_port to avoid
1502: * dependency on channels.[ch] here.
1503: */
1504: if (arg == NULL ||
1505: (strcmp(arg, "*") != 0 && a2port(arg) <= 0)) {
1506: fatal("%s line %d: bad port number in %s",
1507: filename, linenum,
1508: lookup_opcode_name(opcode));
1509: }
1510: if (*activep && uvalue == 0) {
1511: opt_array_append(filename, linenum,
1512: lookup_opcode_name(opcode),
1513: cppptr, uintptr, arg2);
1514: }
1515: free(arg2);
1516: }
1517: break;
1518:
1.90 stevesk 1519: case oClearAllForwardings:
1520: intptr = &options->clear_forwardings;
1521: goto parse_flag;
1522:
1.17 markus 1523: case oHost:
1.344 djm 1524: if (cmdline) {
1525: error("Host directive not supported as a command-line "
1.206 djm 1526: "option");
1.344 djm 1527: return -1;
1528: }
1.17 markus 1529: *activep = 0;
1.191 djm 1530: arg2 = NULL;
1531: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.252 djm 1532: if ((flags & SSHCONF_NEVERMATCH) != 0)
1533: break;
1.191 djm 1534: negated = *arg == '!';
1535: if (negated)
1536: arg++;
1.38 provos 1537: if (match_pattern(host, arg)) {
1.191 djm 1538: if (negated) {
1539: debug("%.200s line %d: Skipping Host "
1540: "block because of negated match "
1541: "for %.100s", filename, linenum,
1542: arg);
1543: *activep = 0;
1544: break;
1545: }
1546: if (!*activep)
1547: arg2 = arg; /* logged below */
1.17 markus 1548: *activep = 1;
1549: }
1.191 djm 1550: }
1551: if (*activep)
1552: debug("%.200s line %d: Applying options for %.100s",
1553: filename, linenum, arg2);
1.42 provos 1554: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1555: return 0;
1556:
1.206 djm 1557: case oMatch:
1.344 djm 1558: if (cmdline) {
1559: error("Host directive not supported as a command-line "
1.206 djm 1560: "option");
1.344 djm 1561: return -1;
1562: }
1.221 djm 1563: value = match_cfg_line(options, &s, pw, host, original_host,
1.302 djm 1564: flags & SSHCONF_FINAL, want_final_pass,
1565: filename, linenum);
1.344 djm 1566: if (value < 0) {
1567: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1568: linenum);
1.344 djm 1569: return -1;
1570: }
1.252 djm 1571: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.206 djm 1572: break;
1573:
1.17 markus 1574: case oEscapeChar:
1575: intptr = &options->escape_char;
1.42 provos 1576: arg = strdelim(&s);
1.344 djm 1577: if (!arg || *arg == '\0') {
1578: error("%.200s line %d: Missing argument.",
1579: filename, linenum);
1580: return -1;
1581: }
1.236 djm 1582: if (strcmp(arg, "none") == 0)
1583: value = SSH_ESCAPECHAR_NONE;
1584: else if (arg[1] == '\0')
1585: value = (u_char) arg[0];
1586: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1587: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1588: value = (u_char) arg[1] & 31;
1.17 markus 1589: else {
1.344 djm 1590: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1591: filename, linenum);
1.344 djm 1592: return -1;
1.17 markus 1593: }
1594: if (*activep && *intptr == -1)
1595: *intptr = value;
1.112 djm 1596: break;
1597:
1598: case oAddressFamily:
1.114 djm 1599: intptr = &options->address_family;
1.207 djm 1600: multistate_ptr = multistate_addressfamily;
1601: goto parse_multistate;
1.17 markus 1602:
1.101 markus 1603: case oEnableSSHKeysign:
1604: intptr = &options->enable_ssh_keysign;
1605: goto parse_flag;
1606:
1.128 markus 1607: case oIdentitiesOnly:
1608: intptr = &options->identities_only;
1609: goto parse_flag;
1610:
1.127 markus 1611: case oServerAliveInterval:
1612: intptr = &options->server_alive_interval;
1613: goto parse_time;
1614:
1615: case oServerAliveCountMax:
1616: intptr = &options->server_alive_count_max;
1617: goto parse_int;
1618:
1.130 djm 1619: case oSendEnv:
1620: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.344 djm 1621: if (strchr(arg, '=') != NULL) {
1622: error("%s line %d: Invalid environment name.",
1.130 djm 1623: filename, linenum);
1.344 djm 1624: return -1;
1625: }
1.137 djm 1626: if (!*activep)
1627: continue;
1.286 djm 1628: if (*arg == '-') {
1629: /* Removing an env var */
1630: rm_env(options, arg, filename, linenum);
1631: continue;
1632: } else {
1633: /* Adding an env var */
1.344 djm 1634: if (options->num_send_env >= INT_MAX) {
1635: error("%s line %d: too many send env.",
1.286 djm 1636: filename, linenum);
1.344 djm 1637: return -1;
1638: }
1.290 djm 1639: options->send_env = xrecallocarray(
1640: options->send_env, options->num_send_env,
1.291 djm 1641: options->num_send_env + 1,
1.290 djm 1642: sizeof(*options->send_env));
1.286 djm 1643: options->send_env[options->num_send_env++] =
1644: xstrdup(arg);
1645: }
1.130 djm 1646: }
1647: break;
1648:
1.290 djm 1649: case oSetEnv:
1650: value = options->num_setenv;
1651: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1.344 djm 1652: if (strchr(arg, '=') == NULL) {
1653: error("%s line %d: Invalid SetEnv.",
1.290 djm 1654: filename, linenum);
1.344 djm 1655: return -1;
1656: }
1.290 djm 1657: if (!*activep || value != 0)
1658: continue;
1659: /* Adding a setenv var */
1.344 djm 1660: if (options->num_setenv >= INT_MAX) {
1661: error("%s line %d: too many SetEnv.",
1.290 djm 1662: filename, linenum);
1.344 djm 1663: return -1;
1664: }
1.290 djm 1665: options->setenv = xrecallocarray(
1666: options->setenv, options->num_setenv,
1667: options->num_setenv + 1, sizeof(*options->setenv));
1668: options->setenv[options->num_setenv++] = xstrdup(arg);
1669: }
1670: break;
1671:
1.132 djm 1672: case oControlPath:
1673: charptr = &options->control_path;
1674: goto parse_string;
1675:
1676: case oControlMaster:
1677: intptr = &options->control_master;
1.207 djm 1678: multistate_ptr = multistate_controlmaster;
1679: goto parse_multistate;
1.132 djm 1680:
1.187 djm 1681: case oControlPersist:
1682: /* no/false/yes/true, or a time spec */
1683: intptr = &options->control_persist;
1684: arg = strdelim(&s);
1.344 djm 1685: if (!arg || *arg == '\0') {
1686: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1687: " argument.", filename, linenum);
1.344 djm 1688: return -1;
1689: }
1.187 djm 1690: value = 0;
1691: value2 = 0; /* timeout */
1692: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1693: value = 0;
1694: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1695: value = 1;
1696: else if ((value2 = convtime(arg)) >= 0)
1697: value = 1;
1.344 djm 1698: else {
1699: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1700: filename, linenum);
1.344 djm 1701: return -1;
1702: }
1.187 djm 1703: if (*activep && *intptr == -1) {
1704: *intptr = value;
1705: options->control_persist_timeout = value2;
1706: }
1707: break;
1708:
1.136 djm 1709: case oHashKnownHosts:
1710: intptr = &options->hash_known_hosts;
1711: goto parse_flag;
1712:
1.144 reyk 1713: case oTunnel:
1714: intptr = &options->tun_open;
1.207 djm 1715: multistate_ptr = multistate_tunnel;
1716: goto parse_multistate;
1.144 reyk 1717:
1718: case oTunnelDevice:
1719: arg = strdelim(&s);
1.344 djm 1720: if (!arg || *arg == '\0') {
1721: error("%.200s line %d: Missing argument.",
1722: filename, linenum);
1723: return -1;
1724: }
1.144 reyk 1725: value = a2tun(arg, &value2);
1.344 djm 1726: if (value == SSH_TUNID_ERR) {
1727: error("%.200s line %d: Bad tun device.",
1728: filename, linenum);
1729: return -1;
1730: }
1.144 reyk 1731: if (*activep) {
1732: options->tun_local = value;
1733: options->tun_remote = value2;
1734: }
1735: break;
1736:
1737: case oLocalCommand:
1738: charptr = &options->local_command;
1739: goto parse_command;
1740:
1741: case oPermitLocalCommand:
1742: intptr = &options->permit_local_command;
1743: goto parse_flag;
1744:
1.277 bluhm 1745: case oRemoteCommand:
1746: charptr = &options->remote_command;
1747: goto parse_command;
1748:
1.167 grunk 1749: case oVisualHostKey:
1750: intptr = &options->visual_host_key;
1751: goto parse_flag;
1752:
1.252 djm 1753: case oInclude:
1.344 djm 1754: if (cmdline) {
1755: error("Include directive not supported as a "
1.252 djm 1756: "command-line option");
1.344 djm 1757: return -1;
1758: }
1.252 djm 1759: value = 0;
1760: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1761: /*
1762: * Ensure all paths are anchored. User configuration
1763: * files may begin with '~/' but system configurations
1764: * must not. If the path is relative, then treat it
1765: * as living in ~/.ssh for user configurations or
1766: * /etc/ssh for system ones.
1767: */
1.344 djm 1768: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1769: error("%.200s line %d: bad include path %s.",
1.252 djm 1770: filename, linenum, arg);
1.344 djm 1771: return -1;
1772: }
1.301 djm 1773: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1774: xasprintf(&arg2, "%s/%s",
1775: (flags & SSHCONF_USERCONF) ?
1776: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1777: } else
1778: arg2 = xstrdup(arg);
1779: memset(&gl, 0, sizeof(gl));
1780: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1781: if (r == GLOB_NOMATCH) {
1782: debug("%.200s line %d: include %s matched no "
1783: "files",filename, linenum, arg2);
1.269 dtucker 1784: free(arg2);
1.252 djm 1785: continue;
1.344 djm 1786: } else if (r != 0) {
1787: error("%.200s line %d: glob failed for %s.",
1.252 djm 1788: filename, linenum, arg2);
1.344 djm 1789: return -1;
1790: }
1.252 djm 1791: free(arg2);
1792: oactive = *activep;
1.313 deraadt 1793: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1794: debug3("%.200s line %d: Including file %s "
1795: "depth %d%s", filename, linenum,
1796: gl.gl_pathv[i], depth,
1797: oactive ? "" : " (parse only)");
1798: r = read_config_file_depth(gl.gl_pathv[i],
1799: pw, host, original_host, options,
1800: flags | SSHCONF_CHECKPERM |
1801: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1802: activep, want_final_pass, depth + 1);
1.264 djm 1803: if (r != 1 && errno != ENOENT) {
1.344 djm 1804: error("Can't open user config file "
1.263 djm 1805: "%.100s: %.100s", gl.gl_pathv[i],
1806: strerror(errno));
1.344 djm 1807: globfree(&gl);
1808: return -1;
1.263 djm 1809: }
1.252 djm 1810: /*
1811: * don't let Match in includes clobber the
1812: * containing file's Match state.
1813: */
1814: *activep = oactive;
1815: if (r != 1)
1816: value = -1;
1817: }
1818: globfree(&gl);
1819: }
1820: if (value != 0)
1821: return value;
1822: break;
1823:
1.190 djm 1824: case oIPQoS:
1825: arg = strdelim(&s);
1.344 djm 1826: if ((value = parse_ipqos(arg)) == -1) {
1827: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1828: filename, linenum, arg);
1.344 djm 1829: return -1;
1830: }
1.190 djm 1831: arg = strdelim(&s);
1832: if (arg == NULL)
1833: value2 = value;
1.344 djm 1834: else if ((value2 = parse_ipqos(arg)) == -1) {
1835: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1836: filename, linenum, arg);
1.344 djm 1837: return -1;
1838: }
1.190 djm 1839: if (*activep) {
1840: options->ip_qos_interactive = value;
1841: options->ip_qos_bulk = value2;
1842: }
1843: break;
1844:
1.192 djm 1845: case oRequestTTY:
1846: intptr = &options->request_tty;
1.207 djm 1847: multistate_ptr = multistate_requesttty;
1848: goto parse_multistate;
1.192 djm 1849:
1.199 djm 1850: case oIgnoreUnknown:
1851: charptr = &options->ignored_unknown;
1852: goto parse_string;
1853:
1.205 djm 1854: case oProxyUseFdpass:
1855: intptr = &options->proxy_use_fdpass;
1856: goto parse_flag;
1857:
1.208 djm 1858: case oCanonicalDomains:
1859: value = options->num_canonical_domains != 0;
1860: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.280 millert 1861: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 1862: error("%s line %d: %s", filename, linenum,
1.280 millert 1863: errstr);
1.344 djm 1864: return -1;
1.280 millert 1865: }
1.208 djm 1866: if (!*activep || value)
1867: continue;
1.344 djm 1868: if (options->num_canonical_domains >=
1869: MAX_CANON_DOMAINS) {
1870: error("%s line %d: too many hostname suffixes.",
1.208 djm 1871: filename, linenum);
1.344 djm 1872: return -1;
1873: }
1.208 djm 1874: options->canonical_domains[
1875: options->num_canonical_domains++] = xstrdup(arg);
1876: }
1877: break;
1878:
1.209 djm 1879: case oCanonicalizePermittedCNAMEs:
1.208 djm 1880: value = options->num_permitted_cnames != 0;
1881: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1882: /* Either '*' for everything or 'list:list' */
1883: if (strcmp(arg, "*") == 0)
1884: arg2 = arg;
1885: else {
1886: lowercase(arg);
1887: if ((arg2 = strchr(arg, ':')) == NULL ||
1888: arg2[1] == '\0') {
1.344 djm 1889: error("%s line %d: "
1.208 djm 1890: "Invalid permitted CNAME \"%s\"",
1891: filename, linenum, arg);
1.344 djm 1892: return -1;
1.208 djm 1893: }
1894: *arg2 = '\0';
1895: arg2++;
1896: }
1897: if (!*activep || value)
1898: continue;
1.344 djm 1899: if (options->num_permitted_cnames >=
1900: MAX_CANON_DOMAINS) {
1901: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 1902: filename, linenum);
1.344 djm 1903: return -1;
1904: }
1.208 djm 1905: cname = options->permitted_cnames +
1906: options->num_permitted_cnames++;
1907: cname->source_list = xstrdup(arg);
1908: cname->target_list = xstrdup(arg2);
1909: }
1910: break;
1911:
1.209 djm 1912: case oCanonicalizeHostname:
1913: intptr = &options->canonicalize_hostname;
1914: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1915: goto parse_multistate;
1916:
1.209 djm 1917: case oCanonicalizeMaxDots:
1918: intptr = &options->canonicalize_max_dots;
1.208 djm 1919: goto parse_int;
1920:
1.209 djm 1921: case oCanonicalizeFallbackLocal:
1922: intptr = &options->canonicalize_fallback_local;
1.208 djm 1923: goto parse_flag;
1924:
1.220 millert 1925: case oStreamLocalBindMask:
1926: arg = strdelim(&s);
1.344 djm 1927: if (!arg || *arg == '\0') {
1928: error("%.200s line %d: Missing StreamLocalBindMask "
1929: "argument.", filename, linenum);
1930: return -1;
1931: }
1.220 millert 1932: /* Parse mode in octal format */
1933: value = strtol(arg, &endofnumber, 8);
1.344 djm 1934: if (arg == endofnumber || value < 0 || value > 0777) {
1935: error("%.200s line %d: Bad mask.", filename, linenum);
1936: return -1;
1937: }
1.220 millert 1938: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1939: break;
1940:
1941: case oStreamLocalBindUnlink:
1942: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1943: goto parse_flag;
1944:
1.223 djm 1945: case oRevokedHostKeys:
1946: charptr = &options->revoked_host_keys;
1947: goto parse_string;
1948:
1.224 djm 1949: case oFingerprintHash:
1.225 djm 1950: intptr = &options->fingerprint_hash;
1.224 djm 1951: arg = strdelim(&s);
1.344 djm 1952: if (!arg || *arg == '\0') {
1953: error("%.200s line %d: Missing argument.",
1.224 djm 1954: filename, linenum);
1.344 djm 1955: return -1;
1956: }
1957: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
1958: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 1959: filename, linenum, arg);
1.344 djm 1960: return -1;
1961: }
1.225 djm 1962: if (*activep && *intptr == -1)
1963: *intptr = value;
1.224 djm 1964: break;
1965:
1.229 djm 1966: case oUpdateHostkeys:
1967: intptr = &options->update_hostkeys;
1.232 djm 1968: multistate_ptr = multistate_yesnoask;
1969: goto parse_multistate;
1.229 djm 1970:
1.350 dtucker 1971: case oHostbasedAcceptedAlgorithms:
1972: charptr = &options->hostbased_accepted_algos;
1.349 dtucker 1973: goto parse_pubkey_algos;
1.238 markus 1974:
1.349 dtucker 1975: case oPubkeyAcceptedAlgorithms:
1976: charptr = &options->pubkey_accepted_algos;
1977: goto parse_pubkey_algos;
1.230 djm 1978:
1.246 jcs 1979: case oAddKeysToAgent:
1.334 djm 1980: arg = strdelim(&s);
1981: arg2 = strdelim(&s);
1982: value = parse_multistate_value(arg, filename, linenum,
1.353 ! djm 1983: multistate_yesnoaskconfirm);
1.334 djm 1984: value2 = 0; /* unlimited lifespan by default */
1985: if (value == 3 && arg2 != NULL) {
1986: /* allow "AddKeysToAgent confirm 5m" */
1.344 djm 1987: if ((value2 = convtime(arg2)) == -1 ||
1988: value2 > INT_MAX) {
1989: error("%s line %d: invalid time value.",
1.334 djm 1990: filename, linenum);
1.344 djm 1991: return -1;
1992: }
1.334 djm 1993: } else if (value == -1 && arg2 == NULL) {
1.344 djm 1994: if ((value2 = convtime(arg)) == -1 ||
1995: value2 > INT_MAX) {
1996: error("%s line %d: unsupported option",
1.334 djm 1997: filename, linenum);
1.344 djm 1998: return -1;
1999: }
1.334 djm 2000: value = 1; /* yes */
2001: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2002: error("%s line %d: unsupported option",
1.334 djm 2003: filename, linenum);
1.344 djm 2004: return -1;
1.334 djm 2005: }
2006: if (*activep && options->add_keys_to_agent == -1) {
2007: options->add_keys_to_agent = value;
2008: options->add_keys_to_agent_lifespan = value2;
2009: }
2010: break;
1.246 jcs 2011:
1.253 markus 2012: case oIdentityAgent:
2013: charptr = &options->identity_agent;
1.299 djm 2014: arg = strdelim(&s);
1.344 djm 2015: if (!arg || *arg == '\0') {
2016: error("%.200s line %d: Missing argument.",
1.299 djm 2017: filename, linenum);
1.344 djm 2018: return -1;
2019: }
1.319 djm 2020: parse_agent_path:
1.299 djm 2021: /* Extra validation if the string represents an env var. */
1.344 djm 2022: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2023: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2024: "%s.", filename, linenum, arg);
1.344 djm 2025: return -1;
2026: }
1.331 dtucker 2027: free(arg2);
2028: /* check for legacy environment format */
1.344 djm 2029: if (arg[0] == '$' && arg[1] != '{' &&
2030: !valid_env_name(arg + 1)) {
2031: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2032: filename, linenum, arg);
1.344 djm 2033: return -1;
1.299 djm 2034: }
2035: if (*activep && *charptr == NULL)
2036: *charptr = xstrdup(arg);
2037: break;
1.253 markus 2038:
1.96 markus 2039: case oDeprecated:
1.98 markus 2040: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2041: filename, linenum, keyword);
1.98 markus 2042: return 0;
1.96 markus 2043:
1.110 jakob 2044: case oUnsupported:
2045: error("%s line %d: Unsupported option \"%s\"",
2046: filename, linenum, keyword);
2047: return 0;
2048:
1.17 markus 2049: default:
1.344 djm 2050: error("%s line %d: Unimplemented opcode %d",
2051: filename, linenum, opcode);
1.17 markus 2052: }
2053:
2054: /* Check that there is no garbage at end of line. */
1.57 djm 2055: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.344 djm 2056: error("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 2057: filename, linenum, arg);
1.344 djm 2058: return -1;
1.39 ho 2059: }
1.17 markus 2060: return 0;
1.1 deraadt 2061: }
2062:
1.19 markus 2063: /*
2064: * Reads the config file and modifies the options accordingly. Options
2065: * should already be initialized before this call. This never returns if
1.89 stevesk 2066: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2067: */
1.89 stevesk 2068: int
1.206 djm 2069: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2070: const char *original_host, Options *options, int flags,
2071: int *want_final_pass)
1.1 deraadt 2072: {
1.252 djm 2073: int active = 1;
2074:
2075: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2076: options, flags, &active, want_final_pass, 0);
1.252 djm 2077: }
2078:
2079: #define READCONF_MAX_DEPTH 16
2080: static int
2081: read_config_file_depth(const char *filename, struct passwd *pw,
2082: const char *host, const char *original_host, Options *options,
1.302 djm 2083: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2084: {
1.17 markus 2085: FILE *f;
1.343 dtucker 2086: char *cp, *line = NULL;
1.289 markus 2087: size_t linesize = 0;
1.252 djm 2088: int linenum;
1.17 markus 2089: int bad_options = 0;
2090:
1.252 djm 2091: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2092: fatal("Too many recursive configuration includes");
2093:
1.129 djm 2094: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2095: return 0;
1.129 djm 2096:
1.196 dtucker 2097: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2098: struct stat sb;
1.134 deraadt 2099:
1.131 dtucker 2100: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2101: fatal("fstat %s: %s", filename, strerror(errno));
2102: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2103: (sb.st_mode & 022) != 0))
1.129 djm 2104: fatal("Bad owner or permissions on %s", filename);
2105: }
1.17 markus 2106:
2107: debug("Reading configuration data %.200s", filename);
2108:
1.19 markus 2109: /*
2110: * Mark that we are now processing the options. This flag is turned
2111: * on/off by Host specifications.
2112: */
1.17 markus 2113: linenum = 0;
1.289 markus 2114: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2115: /* Update line number counter. */
2116: linenum++;
1.343 dtucker 2117: /*
2118: * Trim out comments and strip whitespace.
2119: * NB - preserve newlines, they are needed to reproduce
2120: * line numbers later for error messages.
2121: */
2122: if ((cp = strchr(line, '#')) != NULL)
2123: *cp = '\0';
1.252 djm 2124: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2125: line, filename, linenum, activep, flags, want_final_pass,
2126: depth) != 0)
1.17 markus 2127: bad_options++;
2128: }
1.289 markus 2129: free(line);
1.17 markus 2130: fclose(f);
2131: if (bad_options > 0)
1.64 millert 2132: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2133: filename, bad_options);
1.89 stevesk 2134: return 1;
1.1 deraadt 2135: }
2136:
1.218 djm 2137: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2138: int
2139: option_clear_or_none(const char *o)
2140: {
2141: return o == NULL || strcasecmp(o, "none") == 0;
2142: }
2143:
1.19 markus 2144: /*
2145: * Initializes options to special values that indicate that they have not yet
2146: * been set. Read_config_file will only set options with this value. Options
2147: * are processed in the following order: command line, user config file,
2148: * system config file. Last, fill_default_options is called.
2149: */
1.1 deraadt 2150:
1.26 markus 2151: void
1.17 markus 2152: initialize_options(Options * options)
1.1 deraadt 2153: {
1.17 markus 2154: memset(options, 'X', sizeof(*options));
2155: options->forward_agent = -1;
1.319 djm 2156: options->forward_agent_sock_path = NULL;
1.17 markus 2157: options->forward_x11 = -1;
1.123 markus 2158: options->forward_x11_trusted = -1;
1.186 djm 2159: options->forward_x11_timeout = -1;
1.255 dtucker 2160: options->stdio_forward_host = NULL;
2161: options->stdio_forward_port = 0;
1.256 dtucker 2162: options->clear_forwardings = -1;
1.153 markus 2163: options->exit_on_forward_failure = -1;
1.34 markus 2164: options->xauth_location = NULL;
1.220 millert 2165: options->fwd_opts.gateway_ports = -1;
2166: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2167: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2168: options->pubkey_authentication = -1;
1.78 markus 2169: options->challenge_response_authentication = -1;
1.118 markus 2170: options->gss_authentication = -1;
2171: options->gss_deleg_creds = -1;
1.17 markus 2172: options->password_authentication = -1;
1.48 markus 2173: options->kbd_interactive_authentication = -1;
2174: options->kbd_interactive_devices = NULL;
1.72 markus 2175: options->hostbased_authentication = -1;
1.17 markus 2176: options->batch_mode = -1;
2177: options->check_host_ip = -1;
2178: options->strict_host_key_checking = -1;
2179: options->compression = -1;
1.126 markus 2180: options->tcp_keep_alive = -1;
1.17 markus 2181: options->port = -1;
1.114 djm 2182: options->address_family = -1;
1.17 markus 2183: options->connection_attempts = -1;
1.111 djm 2184: options->connection_timeout = -1;
1.17 markus 2185: options->number_of_password_prompts = -1;
1.25 markus 2186: options->ciphers = NULL;
1.62 markus 2187: options->macs = NULL;
1.189 djm 2188: options->kex_algorithms = NULL;
1.76 markus 2189: options->hostkeyalgorithms = NULL;
1.298 djm 2190: options->ca_sign_algorithms = NULL;
1.17 markus 2191: options->num_identity_files = 0;
1.344 djm 2192: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2193: options->num_certificate_files = 0;
1.344 djm 2194: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2195: options->hostname = NULL;
1.52 markus 2196: options->host_key_alias = NULL;
1.17 markus 2197: options->proxy_command = NULL;
1.257 djm 2198: options->jump_user = NULL;
2199: options->jump_host = NULL;
2200: options->jump_port = -1;
2201: options->jump_extra = NULL;
1.17 markus 2202: options->user = NULL;
2203: options->escape_char = -1;
1.193 djm 2204: options->num_system_hostfiles = 0;
2205: options->num_user_hostfiles = 0;
1.185 djm 2206: options->local_forwards = NULL;
1.17 markus 2207: options->num_local_forwards = 0;
1.185 djm 2208: options->remote_forwards = NULL;
1.17 markus 2209: options->num_remote_forwards = 0;
1.351 markus 2210: options->permitted_remote_opens = NULL;
2211: options->num_permitted_remote_opens = 0;
1.271 dtucker 2212: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2213: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2214: options->num_log_verbose = 0;
2215: options->log_verbose = NULL;
1.67 markus 2216: options->preferred_authentications = NULL;
1.77 markus 2217: options->bind_address = NULL;
1.282 djm 2218: options->bind_interface = NULL;
1.183 markus 2219: options->pkcs11_provider = NULL;
1.310 djm 2220: options->sk_provider = NULL;
1.101 markus 2221: options->enable_ssh_keysign = - 1;
1.91 markus 2222: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2223: options->identities_only = - 1;
1.105 markus 2224: options->rekey_limit = - 1;
1.198 dtucker 2225: options->rekey_interval = -1;
1.107 jakob 2226: options->verify_host_key_dns = -1;
1.127 markus 2227: options->server_alive_interval = -1;
2228: options->server_alive_count_max = -1;
1.290 djm 2229: options->send_env = NULL;
1.130 djm 2230: options->num_send_env = 0;
1.290 djm 2231: options->setenv = NULL;
2232: options->num_setenv = 0;
1.132 djm 2233: options->control_path = NULL;
2234: options->control_master = -1;
1.187 djm 2235: options->control_persist = -1;
2236: options->control_persist_timeout = 0;
1.136 djm 2237: options->hash_known_hosts = -1;
1.144 reyk 2238: options->tun_open = -1;
2239: options->tun_local = -1;
2240: options->tun_remote = -1;
2241: options->local_command = NULL;
2242: options->permit_local_command = -1;
1.277 bluhm 2243: options->remote_command = NULL;
1.246 jcs 2244: options->add_keys_to_agent = -1;
1.334 djm 2245: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2246: options->identity_agent = NULL;
1.167 grunk 2247: options->visual_host_key = -1;
1.190 djm 2248: options->ip_qos_interactive = -1;
2249: options->ip_qos_bulk = -1;
1.192 djm 2250: options->request_tty = -1;
1.205 djm 2251: options->proxy_use_fdpass = -1;
1.199 djm 2252: options->ignored_unknown = NULL;
1.208 djm 2253: options->num_canonical_domains = 0;
2254: options->num_permitted_cnames = 0;
1.209 djm 2255: options->canonicalize_max_dots = -1;
2256: options->canonicalize_fallback_local = -1;
2257: options->canonicalize_hostname = -1;
1.223 djm 2258: options->revoked_host_keys = NULL;
1.224 djm 2259: options->fingerprint_hash = -1;
1.229 djm 2260: options->update_hostkeys = -1;
1.350 dtucker 2261: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2262: options->pubkey_accepted_algos = NULL;
1.346 djm 2263: options->known_hosts_command = NULL;
1.1 deraadt 2264: }
2265:
1.19 markus 2266: /*
1.218 djm 2267: * A petite version of fill_default_options() that just fills the options
2268: * needed for hostname canonicalization to proceed.
2269: */
2270: void
2271: fill_default_options_for_canonicalization(Options *options)
2272: {
2273: if (options->canonicalize_max_dots == -1)
2274: options->canonicalize_max_dots = 1;
2275: if (options->canonicalize_fallback_local == -1)
2276: options->canonicalize_fallback_local = 1;
2277: if (options->canonicalize_hostname == -1)
2278: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2279: }
2280:
2281: /*
1.19 markus 2282: * Called after processing other sources of option data, this fills those
2283: * options for which no value has been specified with their default values.
2284: */
1.344 djm 2285: int
1.17 markus 2286: fill_default_options(Options * options)
1.1 deraadt 2287: {
1.298 djm 2288: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2289: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2290: int ret = 0, r;
1.292 djm 2291:
1.17 markus 2292: if (options->forward_agent == -1)
1.33 markus 2293: options->forward_agent = 0;
1.17 markus 2294: if (options->forward_x11 == -1)
1.23 markus 2295: options->forward_x11 = 0;
1.123 markus 2296: if (options->forward_x11_trusted == -1)
2297: options->forward_x11_trusted = 0;
1.186 djm 2298: if (options->forward_x11_timeout == -1)
2299: options->forward_x11_timeout = 1200;
1.256 dtucker 2300: /*
2301: * stdio forwarding (-W) changes the default for these but we defer
2302: * setting the values so they can be overridden.
2303: */
1.153 markus 2304: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2305: options->exit_on_forward_failure =
2306: options->stdio_forward_host != NULL ? 1 : 0;
2307: if (options->clear_forwardings == -1)
2308: options->clear_forwardings =
2309: options->stdio_forward_host != NULL ? 1 : 0;
2310: if (options->clear_forwardings == 1)
2311: clear_forwardings(options);
2312:
1.34 markus 2313: if (options->xauth_location == NULL)
1.344 djm 2314: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2315: if (options->fwd_opts.gateway_ports == -1)
2316: options->fwd_opts.gateway_ports = 0;
2317: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2318: options->fwd_opts.streamlocal_bind_mask = 0177;
2319: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2320: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2321: if (options->pubkey_authentication == -1)
2322: options->pubkey_authentication = 1;
1.78 markus 2323: if (options->challenge_response_authentication == -1)
1.83 markus 2324: options->challenge_response_authentication = 1;
1.118 markus 2325: if (options->gss_authentication == -1)
1.122 markus 2326: options->gss_authentication = 0;
1.118 markus 2327: if (options->gss_deleg_creds == -1)
2328: options->gss_deleg_creds = 0;
1.17 markus 2329: if (options->password_authentication == -1)
2330: options->password_authentication = 1;
1.48 markus 2331: if (options->kbd_interactive_authentication == -1)
1.59 markus 2332: options->kbd_interactive_authentication = 1;
1.72 markus 2333: if (options->hostbased_authentication == -1)
2334: options->hostbased_authentication = 0;
1.17 markus 2335: if (options->batch_mode == -1)
2336: options->batch_mode = 0;
2337: if (options->check_host_ip == -1)
1.348 djm 2338: options->check_host_ip = 0;
1.17 markus 2339: if (options->strict_host_key_checking == -1)
1.278 djm 2340: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2341: if (options->compression == -1)
2342: options->compression = 0;
1.126 markus 2343: if (options->tcp_keep_alive == -1)
2344: options->tcp_keep_alive = 1;
1.17 markus 2345: if (options->port == -1)
2346: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2347: if (options->address_family == -1)
2348: options->address_family = AF_UNSPEC;
1.17 markus 2349: if (options->connection_attempts == -1)
1.84 markus 2350: options->connection_attempts = 1;
1.17 markus 2351: if (options->number_of_password_prompts == -1)
2352: options->number_of_password_prompts = 3;
1.76 markus 2353: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2354: if (options->add_keys_to_agent == -1) {
1.246 jcs 2355: options->add_keys_to_agent = 0;
1.334 djm 2356: options->add_keys_to_agent_lifespan = 0;
2357: }
1.17 markus 2358: if (options->num_identity_files == 0) {
1.273 djm 2359: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2360: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2361: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2362: add_identity_file(options, "~/",
1.310 djm 2363: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2364: add_identity_file(options, "~/",
1.273 djm 2365: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2366: add_identity_file(options, "~/",
2367: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2368: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2369: }
1.17 markus 2370: if (options->escape_char == -1)
2371: options->escape_char = '~';
1.193 djm 2372: if (options->num_system_hostfiles == 0) {
2373: options->system_hostfiles[options->num_system_hostfiles++] =
2374: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2375: options->system_hostfiles[options->num_system_hostfiles++] =
2376: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2377: }
1.336 djm 2378: if (options->update_hostkeys == -1) {
1.338 djm 2379: if (options->verify_host_key_dns <= 0 &&
2380: (options->num_user_hostfiles == 0 ||
1.336 djm 2381: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2382: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2383: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2384: else
1.325 djm 2385: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2386: }
1.193 djm 2387: if (options->num_user_hostfiles == 0) {
2388: options->user_hostfiles[options->num_user_hostfiles++] =
2389: xstrdup(_PATH_SSH_USER_HOSTFILE);
2390: options->user_hostfiles[options->num_user_hostfiles++] =
2391: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2392: }
1.95 markus 2393: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2394: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2395: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2396: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2397: if (options->no_host_authentication_for_localhost == - 1)
2398: options->no_host_authentication_for_localhost = 0;
1.128 markus 2399: if (options->identities_only == -1)
2400: options->identities_only = 0;
1.101 markus 2401: if (options->enable_ssh_keysign == -1)
2402: options->enable_ssh_keysign = 0;
1.105 markus 2403: if (options->rekey_limit == -1)
2404: options->rekey_limit = 0;
1.198 dtucker 2405: if (options->rekey_interval == -1)
2406: options->rekey_interval = 0;
1.107 jakob 2407: if (options->verify_host_key_dns == -1)
2408: options->verify_host_key_dns = 0;
1.127 markus 2409: if (options->server_alive_interval == -1)
2410: options->server_alive_interval = 0;
2411: if (options->server_alive_count_max == -1)
2412: options->server_alive_count_max = 3;
1.132 djm 2413: if (options->control_master == -1)
2414: options->control_master = 0;
1.187 djm 2415: if (options->control_persist == -1) {
2416: options->control_persist = 0;
2417: options->control_persist_timeout = 0;
2418: }
1.136 djm 2419: if (options->hash_known_hosts == -1)
2420: options->hash_known_hosts = 0;
1.144 reyk 2421: if (options->tun_open == -1)
1.145 reyk 2422: options->tun_open = SSH_TUNMODE_NO;
2423: if (options->tun_local == -1)
2424: options->tun_local = SSH_TUNID_ANY;
2425: if (options->tun_remote == -1)
2426: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2427: if (options->permit_local_command == -1)
2428: options->permit_local_command = 0;
1.167 grunk 2429: if (options->visual_host_key == -1)
2430: options->visual_host_key = 0;
1.190 djm 2431: if (options->ip_qos_interactive == -1)
1.284 job 2432: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2433: if (options->ip_qos_bulk == -1)
1.284 job 2434: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2435: if (options->request_tty == -1)
2436: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2437: if (options->proxy_use_fdpass == -1)
2438: options->proxy_use_fdpass = 0;
1.209 djm 2439: if (options->canonicalize_max_dots == -1)
2440: options->canonicalize_max_dots = 1;
2441: if (options->canonicalize_fallback_local == -1)
2442: options->canonicalize_fallback_local = 1;
2443: if (options->canonicalize_hostname == -1)
2444: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2445: if (options->fingerprint_hash == -1)
2446: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2447: if (options->sk_provider == NULL)
1.314 djm 2448: options->sk_provider = xstrdup("internal");
1.292 djm 2449:
2450: /* Expand KEX name lists */
2451: all_cipher = cipher_alg_list(',', 0);
2452: all_mac = mac_alg_list(',');
2453: all_kex = kex_alg_list(',');
2454: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2455: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2456: /* remove unsupported algos from default lists */
1.332 djm 2457: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2458: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2459: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2460: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2461: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2462: #define ASSEMBLE(what, defaults, all) \
2463: do { \
2464: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2465: defaults, all)) != 0) { \
2466: error_fr(r, "%s", #what); \
2467: goto fail; \
2468: } \
1.297 djm 2469: } while (0)
1.320 dtucker 2470: ASSEMBLE(ciphers, def_cipher, all_cipher);
2471: ASSEMBLE(macs, def_mac, all_mac);
2472: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2473: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2474: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2475: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2476: #undef ASSEMBLE
1.224 djm 2477:
1.207 djm 2478: #define CLEAR_ON_NONE(v) \
2479: do { \
1.218 djm 2480: if (option_clear_or_none(v)) { \
1.207 djm 2481: free(v); \
2482: v = NULL; \
2483: } \
2484: } while(0)
2485: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2486: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2487: CLEAR_ON_NONE(options->proxy_command);
2488: CLEAR_ON_NONE(options->control_path);
1.223 djm 2489: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2490: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2491: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2492: CLEAR_ON_NONE(options->known_hosts_command);
1.287 djm 2493: if (options->jump_host != NULL &&
2494: strcmp(options->jump_host, "none") == 0 &&
2495: options->jump_port == 0 && options->jump_user == NULL) {
2496: free(options->jump_host);
2497: options->jump_host = NULL;
2498: }
1.254 markus 2499: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2500: /* options->user will be set in the main program if appropriate */
2501: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2502: /* options->host_key_alias should not be set by default */
1.67 markus 2503: /* options->preferred_authentications will be set in ssh */
1.344 djm 2504:
2505: /* success */
2506: ret = 0;
2507: fail:
2508: free(all_cipher);
2509: free(all_mac);
2510: free(all_kex);
2511: free(all_key);
2512: free(all_sig);
2513: free(def_cipher);
2514: free(def_mac);
2515: free(def_kex);
2516: free(def_key);
2517: free(def_sig);
2518: return ret;
2519: }
2520:
2521: void
2522: free_options(Options *o)
2523: {
2524: int i;
2525:
2526: if (o == NULL)
2527: return;
2528:
2529: #define FREE_ARRAY(type, n, a) \
2530: do { \
2531: type _i; \
2532: for (_i = 0; _i < (n); _i++) \
2533: free((a)[_i]); \
2534: } while (0)
2535:
2536: free(o->forward_agent_sock_path);
2537: free(o->xauth_location);
2538: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2539: free(o->log_verbose);
2540: free(o->ciphers);
2541: free(o->macs);
2542: free(o->hostkeyalgorithms);
2543: free(o->kex_algorithms);
2544: free(o->ca_sign_algorithms);
2545: free(o->hostname);
2546: free(o->host_key_alias);
2547: free(o->proxy_command);
2548: free(o->user);
2549: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2550: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2551: free(o->preferred_authentications);
2552: free(o->bind_address);
2553: free(o->bind_interface);
2554: free(o->pkcs11_provider);
2555: free(o->sk_provider);
2556: for (i = 0; i < o->num_identity_files; i++) {
2557: free(o->identity_files[i]);
2558: sshkey_free(o->identity_keys[i]);
2559: }
2560: for (i = 0; i < o->num_certificate_files; i++) {
2561: free(o->certificate_files[i]);
2562: sshkey_free(o->certificates[i]);
2563: }
2564: free(o->identity_agent);
2565: for (i = 0; i < o->num_local_forwards; i++) {
2566: free(o->local_forwards[i].listen_host);
2567: free(o->local_forwards[i].listen_path);
2568: free(o->local_forwards[i].connect_host);
2569: free(o->local_forwards[i].connect_path);
2570: }
2571: free(o->local_forwards);
2572: for (i = 0; i < o->num_remote_forwards; i++) {
2573: free(o->remote_forwards[i].listen_host);
2574: free(o->remote_forwards[i].listen_path);
2575: free(o->remote_forwards[i].connect_host);
2576: free(o->remote_forwards[i].connect_path);
2577: }
2578: free(o->remote_forwards);
2579: free(o->stdio_forward_host);
2580: FREE_ARRAY(int, o->num_send_env, o->send_env);
2581: free(o->send_env);
2582: FREE_ARRAY(int, o->num_setenv, o->setenv);
2583: free(o->setenv);
2584: free(o->control_path);
2585: free(o->local_command);
2586: free(o->remote_command);
2587: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2588: for (i = 0; i < o->num_permitted_cnames; i++) {
2589: free(o->permitted_cnames[i].source_list);
2590: free(o->permitted_cnames[i].target_list);
2591: }
2592: free(o->revoked_host_keys);
1.350 dtucker 2593: free(o->hostbased_accepted_algos);
1.349 dtucker 2594: free(o->pubkey_accepted_algos);
1.344 djm 2595: free(o->jump_user);
2596: free(o->jump_host);
2597: free(o->jump_extra);
2598: free(o->ignored_unknown);
2599: explicit_bzero(o, sizeof(*o));
2600: #undef FREE_ARRAY
1.135 djm 2601: }
2602:
1.220 millert 2603: struct fwdarg {
2604: char *arg;
2605: int ispath;
2606: };
2607:
2608: /*
2609: * parse_fwd_field
2610: * parses the next field in a port forwarding specification.
2611: * sets fwd to the parsed field and advances p past the colon
2612: * or sets it to NULL at end of string.
2613: * returns 0 on success, else non-zero.
2614: */
2615: static int
2616: parse_fwd_field(char **p, struct fwdarg *fwd)
2617: {
2618: char *ep, *cp = *p;
2619: int ispath = 0;
2620:
2621: if (*cp == '\0') {
2622: *p = NULL;
2623: return -1; /* end of string */
2624: }
2625:
2626: /*
2627: * A field escaped with square brackets is used literally.
2628: * XXX - allow ']' to be escaped via backslash?
2629: */
2630: if (*cp == '[') {
2631: /* find matching ']' */
2632: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2633: if (*ep == '/')
2634: ispath = 1;
2635: }
2636: /* no matching ']' or not at end of field. */
2637: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2638: return -1;
2639: /* NUL terminate the field and advance p past the colon */
2640: *ep++ = '\0';
2641: if (*ep != '\0')
2642: *ep++ = '\0';
2643: fwd->arg = cp + 1;
2644: fwd->ispath = ispath;
2645: *p = ep;
2646: return 0;
2647: }
2648:
2649: for (cp = *p; *cp != '\0'; cp++) {
2650: switch (*cp) {
2651: case '\\':
2652: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2653: if (*cp == '\0')
2654: return -1;
1.220 millert 2655: break;
2656: case '/':
2657: ispath = 1;
2658: break;
2659: case ':':
2660: *cp++ = '\0';
2661: goto done;
2662: }
2663: }
2664: done:
2665: fwd->arg = *p;
2666: fwd->ispath = ispath;
2667: *p = cp;
2668: return 0;
2669: }
2670:
1.135 djm 2671: /*
2672: * parse_forward
2673: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2674: * dynamicfwd == 0
1.220 millert 2675: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2676: * listenpath:connectpath
1.168 stevesk 2677: * dynamicfwd == 1
2678: * [listenhost:]listenport
1.135 djm 2679: * returns number of arguments parsed or zero on error
2680: */
2681: int
1.220 millert 2682: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2683: {
1.220 millert 2684: struct fwdarg fwdargs[4];
2685: char *p, *cp;
1.331 dtucker 2686: int i, err;
1.135 djm 2687:
1.220 millert 2688: memset(fwd, 0, sizeof(*fwd));
2689: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2690:
1.331 dtucker 2691: /*
2692: * We expand environment variables before checking if we think they're
2693: * paths so that if ${VAR} expands to a fully qualified path it is
2694: * treated as a path.
2695: */
2696: cp = p = dollar_expand(&err, fwdspec);
2697: if (p == NULL || err)
2698: return 0;
1.135 djm 2699:
2700: /* skip leading spaces */
1.214 deraadt 2701: while (isspace((u_char)*cp))
1.135 djm 2702: cp++;
2703:
1.220 millert 2704: for (i = 0; i < 4; ++i) {
2705: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2706: break;
1.220 millert 2707: }
1.135 djm 2708:
1.170 stevesk 2709: /* Check for trailing garbage */
1.220 millert 2710: if (cp != NULL && *cp != '\0') {
1.135 djm 2711: i = 0; /* failure */
1.220 millert 2712: }
1.135 djm 2713:
2714: switch (i) {
1.168 stevesk 2715: case 1:
1.220 millert 2716: if (fwdargs[0].ispath) {
2717: fwd->listen_path = xstrdup(fwdargs[0].arg);
2718: fwd->listen_port = PORT_STREAMLOCAL;
2719: } else {
2720: fwd->listen_host = NULL;
2721: fwd->listen_port = a2port(fwdargs[0].arg);
2722: }
1.168 stevesk 2723: fwd->connect_host = xstrdup("socks");
2724: break;
2725:
2726: case 2:
1.220 millert 2727: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2728: fwd->listen_path = xstrdup(fwdargs[0].arg);
2729: fwd->listen_port = PORT_STREAMLOCAL;
2730: fwd->connect_path = xstrdup(fwdargs[1].arg);
2731: fwd->connect_port = PORT_STREAMLOCAL;
2732: } else if (fwdargs[1].ispath) {
2733: fwd->listen_host = NULL;
2734: fwd->listen_port = a2port(fwdargs[0].arg);
2735: fwd->connect_path = xstrdup(fwdargs[1].arg);
2736: fwd->connect_port = PORT_STREAMLOCAL;
2737: } else {
2738: fwd->listen_host = xstrdup(fwdargs[0].arg);
2739: fwd->listen_port = a2port(fwdargs[1].arg);
2740: fwd->connect_host = xstrdup("socks");
2741: }
1.168 stevesk 2742: break;
2743:
1.135 djm 2744: case 3:
1.220 millert 2745: if (fwdargs[0].ispath) {
2746: fwd->listen_path = xstrdup(fwdargs[0].arg);
2747: fwd->listen_port = PORT_STREAMLOCAL;
2748: fwd->connect_host = xstrdup(fwdargs[1].arg);
2749: fwd->connect_port = a2port(fwdargs[2].arg);
2750: } else if (fwdargs[2].ispath) {
2751: fwd->listen_host = xstrdup(fwdargs[0].arg);
2752: fwd->listen_port = a2port(fwdargs[1].arg);
2753: fwd->connect_path = xstrdup(fwdargs[2].arg);
2754: fwd->connect_port = PORT_STREAMLOCAL;
2755: } else {
2756: fwd->listen_host = NULL;
2757: fwd->listen_port = a2port(fwdargs[0].arg);
2758: fwd->connect_host = xstrdup(fwdargs[1].arg);
2759: fwd->connect_port = a2port(fwdargs[2].arg);
2760: }
1.135 djm 2761: break;
2762:
2763: case 4:
1.220 millert 2764: fwd->listen_host = xstrdup(fwdargs[0].arg);
2765: fwd->listen_port = a2port(fwdargs[1].arg);
2766: fwd->connect_host = xstrdup(fwdargs[2].arg);
2767: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2768: break;
2769: default:
2770: i = 0; /* failure */
2771: }
2772:
1.202 djm 2773: free(p);
1.135 djm 2774:
1.168 stevesk 2775: if (dynamicfwd) {
2776: if (!(i == 1 || i == 2))
2777: goto fail_free;
2778: } else {
1.220 millert 2779: if (!(i == 3 || i == 4)) {
2780: if (fwd->connect_path == NULL &&
2781: fwd->listen_path == NULL)
2782: goto fail_free;
2783: }
2784: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2785: goto fail_free;
2786: }
2787:
1.220 millert 2788: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2789: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2790: goto fail_free;
2791: if (fwd->connect_host != NULL &&
2792: strlen(fwd->connect_host) >= NI_MAXHOST)
2793: goto fail_free;
1.220 millert 2794: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2795: if (fwd->connect_path != NULL &&
2796: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2797: goto fail_free;
1.176 djm 2798: if (fwd->listen_host != NULL &&
2799: strlen(fwd->listen_host) >= NI_MAXHOST)
2800: goto fail_free;
1.220 millert 2801: if (fwd->listen_path != NULL &&
2802: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2803: goto fail_free;
1.135 djm 2804:
2805: return (i);
2806:
2807: fail_free:
1.202 djm 2808: free(fwd->connect_host);
2809: fwd->connect_host = NULL;
1.220 millert 2810: free(fwd->connect_path);
2811: fwd->connect_path = NULL;
1.202 djm 2812: free(fwd->listen_host);
2813: fwd->listen_host = NULL;
1.220 millert 2814: free(fwd->listen_path);
2815: fwd->listen_path = NULL;
1.135 djm 2816: return (0);
1.221 djm 2817: }
2818:
1.257 djm 2819: int
2820: parse_jump(const char *s, Options *o, int active)
2821: {
2822: char *orig, *sdup, *cp;
2823: char *host = NULL, *user = NULL;
1.345 djm 2824: int r, ret = -1, port = -1, first;
1.257 djm 2825:
2826: active &= o->proxy_command == NULL && o->jump_host == NULL;
2827:
2828: orig = sdup = xstrdup(s);
1.258 naddy 2829: first = active;
1.259 djm 2830: do {
1.287 djm 2831: if (strcasecmp(s, "none") == 0)
2832: break;
1.259 djm 2833: if ((cp = strrchr(sdup, ',')) == NULL)
2834: cp = sdup; /* last */
2835: else
2836: *cp++ = '\0';
2837:
1.258 naddy 2838: if (first) {
1.257 djm 2839: /* First argument and configuration is active */
1.345 djm 2840: r = parse_ssh_uri(cp, &user, &host, &port);
2841: if (r == -1 || (r == 1 &&
2842: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 2843: goto out;
2844: } else {
2845: /* Subsequent argument or inactive configuration */
1.345 djm 2846: r = parse_ssh_uri(cp, NULL, NULL, NULL);
2847: if (r == -1 || (r == 1 &&
2848: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 2849: goto out;
2850: }
1.258 naddy 2851: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2852: } while (cp != sdup);
1.257 djm 2853: /* success */
1.258 naddy 2854: if (active) {
1.287 djm 2855: if (strcasecmp(s, "none") == 0) {
2856: o->jump_host = xstrdup("none");
2857: o->jump_port = 0;
2858: } else {
2859: o->jump_user = user;
2860: o->jump_host = host;
2861: o->jump_port = port;
2862: o->proxy_command = xstrdup("none");
2863: user = host = NULL;
2864: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2865: o->jump_extra = xstrdup(s);
2866: o->jump_extra[cp - s] = '\0';
2867: }
1.259 djm 2868: }
1.258 naddy 2869: }
1.257 djm 2870: ret = 0;
2871: out:
1.258 naddy 2872: free(orig);
1.257 djm 2873: free(user);
2874: free(host);
2875: return ret;
1.280 millert 2876: }
2877:
2878: int
2879: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2880: {
1.344 djm 2881: char *user = NULL, *host = NULL, *path = NULL;
2882: int r, port;
1.280 millert 2883:
1.344 djm 2884: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 2885: if (r == 0 && path != NULL)
2886: r = -1; /* path not allowed */
1.344 djm 2887: if (r == 0) {
2888: if (userp != NULL) {
2889: *userp = user;
2890: user = NULL;
2891: }
2892: if (hostp != NULL) {
2893: *hostp = host;
2894: host = NULL;
2895: }
2896: if (portp != NULL)
2897: *portp = port;
2898: }
2899: free(user);
2900: free(host);
2901: free(path);
1.280 millert 2902: return r;
1.257 djm 2903: }
2904:
1.221 djm 2905: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2906: static const char *
2907: fmt_multistate_int(int val, const struct multistate *m)
2908: {
2909: u_int i;
2910:
2911: for (i = 0; m[i].key != NULL; i++) {
2912: if (m[i].value == val)
2913: return m[i].key;
2914: }
2915: return "UNKNOWN";
2916: }
2917:
2918: static const char *
2919: fmt_intarg(OpCodes code, int val)
2920: {
2921: if (val == -1)
2922: return "unset";
2923: switch (code) {
2924: case oAddressFamily:
2925: return fmt_multistate_int(val, multistate_addressfamily);
2926: case oVerifyHostKeyDNS:
1.232 djm 2927: case oUpdateHostkeys:
1.221 djm 2928: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 2929: case oStrictHostKeyChecking:
2930: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 2931: case oControlMaster:
2932: return fmt_multistate_int(val, multistate_controlmaster);
2933: case oTunnel:
2934: return fmt_multistate_int(val, multistate_tunnel);
2935: case oRequestTTY:
2936: return fmt_multistate_int(val, multistate_requesttty);
2937: case oCanonicalizeHostname:
2938: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 2939: case oAddKeysToAgent:
2940: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 2941: case oFingerprintHash:
2942: return ssh_digest_alg_name(val);
1.221 djm 2943: default:
2944: switch (val) {
2945: case 0:
2946: return "no";
2947: case 1:
2948: return "yes";
2949: default:
2950: return "UNKNOWN";
2951: }
2952: }
2953: }
2954:
2955: static const char *
2956: lookup_opcode_name(OpCodes code)
2957: {
2958: u_int i;
2959:
2960: for (i = 0; keywords[i].name != NULL; i++)
2961: if (keywords[i].opcode == code)
2962: return(keywords[i].name);
2963: return "UNKNOWN";
2964: }
2965:
2966: static void
2967: dump_cfg_int(OpCodes code, int val)
2968: {
2969: printf("%s %d\n", lookup_opcode_name(code), val);
2970: }
2971:
2972: static void
2973: dump_cfg_fmtint(OpCodes code, int val)
2974: {
2975: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2976: }
2977:
2978: static void
2979: dump_cfg_string(OpCodes code, const char *val)
2980: {
2981: if (val == NULL)
2982: return;
2983: printf("%s %s\n", lookup_opcode_name(code), val);
2984: }
2985:
2986: static void
2987: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2988: {
2989: u_int i;
2990:
2991: for (i = 0; i < count; i++)
2992: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2993: }
2994:
2995: static void
2996: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2997: {
2998: u_int i;
2999:
3000: printf("%s", lookup_opcode_name(code));
3001: for (i = 0; i < count; i++)
3002: printf(" %s", vals[i]);
3003: printf("\n");
3004: }
3005:
3006: static void
3007: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3008: {
3009: const struct Forward *fwd;
3010: u_int i;
3011:
3012: /* oDynamicForward */
3013: for (i = 0; i < count; i++) {
3014: fwd = &fwds[i];
1.265 djm 3015: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3016: strcmp(fwd->connect_host, "socks") != 0)
3017: continue;
1.265 djm 3018: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3019: strcmp(fwd->connect_host, "socks") == 0)
3020: continue;
3021: printf("%s", lookup_opcode_name(code));
3022: if (fwd->listen_port == PORT_STREAMLOCAL)
3023: printf(" %s", fwd->listen_path);
3024: else if (fwd->listen_host == NULL)
3025: printf(" %d", fwd->listen_port);
3026: else {
3027: printf(" [%s]:%d",
3028: fwd->listen_host, fwd->listen_port);
3029: }
3030: if (code != oDynamicForward) {
3031: if (fwd->connect_port == PORT_STREAMLOCAL)
3032: printf(" %s", fwd->connect_path);
3033: else if (fwd->connect_host == NULL)
3034: printf(" %d", fwd->connect_port);
3035: else {
3036: printf(" [%s]:%d",
3037: fwd->connect_host, fwd->connect_port);
3038: }
3039: }
3040: printf("\n");
3041: }
3042: }
3043:
3044: void
3045: dump_client_config(Options *o, const char *host)
3046: {
1.326 djm 3047: int i, r;
3048: char buf[8], *all_key;
3049:
3050: /*
3051: * Expand HostKeyAlgorithms name lists. This isn't handled in
3052: * fill_default_options() like the other algorithm lists because
3053: * the host key algorithms are by default dynamically chosen based
3054: * on the host's keys found in known_hosts.
3055: */
3056: all_key = sshkey_alg_list(0, 0, 1, ',');
3057: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3058: all_key)) != 0)
1.340 djm 3059: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3060: free(all_key);
1.240 djm 3061:
1.221 djm 3062: /* Most interesting options first: user, host, port */
3063: dump_cfg_string(oUser, o->user);
1.306 jmc 3064: dump_cfg_string(oHostname, host);
1.221 djm 3065: dump_cfg_int(oPort, o->port);
3066:
3067: /* Flag options */
3068: dump_cfg_fmtint(oAddressFamily, o->address_family);
3069: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3070: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3071: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3072: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
3073: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3074: dump_cfg_fmtint(oCompression, o->compression);
3075: dump_cfg_fmtint(oControlMaster, o->control_master);
3076: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3077: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3078: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3079: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3080: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3081: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3082: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3083: #ifdef GSSAPI
3084: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3085: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3086: #endif /* GSSAPI */
3087: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3088: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3089: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3090: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3091: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3092: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3093: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3094: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3095: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3096: dump_cfg_fmtint(oRequestTTY, o->request_tty);
3097: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3098: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3099: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3100: dump_cfg_fmtint(oTunnel, o->tun_open);
3101: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3102: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3103: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 3104:
3105: /* Integer options */
3106: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3107: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3108: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3109: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3110: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3111: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
3112:
3113: /* String options */
3114: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3115: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3116: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3117: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3118: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3119: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3120: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3121: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3122: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3123: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3124: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3125: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3126: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3127: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3128: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3129: dump_cfg_string(oMacs, o->macs);
1.266 djm 3130: #ifdef ENABLE_PKCS11
1.221 djm 3131: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3132: #endif
1.310 djm 3133: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3134: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3135: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3136: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3137: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3138: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.221 djm 3139:
1.230 djm 3140: /* Forwards */
1.221 djm 3141: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3142: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3143: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3144:
3145: /* String array options */
3146: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3147: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3148: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3149: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3150: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3151: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3152: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3153: dump_cfg_strarray_oneline(oLogVerbose,
3154: o->num_log_verbose, o->log_verbose);
1.221 djm 3155:
3156: /* Special cases */
1.351 markus 3157:
3158: /* PermitRemoteOpen */
3159: if (o->num_permitted_remote_opens == 0)
3160: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3161: else
3162: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3163: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3164:
3165: /* AddKeysToAgent */
3166: if (o->add_keys_to_agent_lifespan <= 0)
3167: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3168: else {
3169: printf("addkeystoagent%s %d\n",
3170: o->add_keys_to_agent == 3 ? " confirm" : "",
3171: o->add_keys_to_agent_lifespan);
3172: }
1.319 djm 3173:
3174: /* oForwardAgent */
3175: if (o->forward_agent_sock_path == NULL)
3176: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3177: else
3178: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3179:
3180: /* oConnectTimeout */
3181: if (o->connection_timeout == -1)
3182: printf("connecttimeout none\n");
3183: else
3184: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3185:
3186: /* oTunnelDevice */
3187: printf("tunneldevice");
3188: if (o->tun_local == SSH_TUNID_ANY)
3189: printf(" any");
3190: else
3191: printf(" %d", o->tun_local);
3192: if (o->tun_remote == SSH_TUNID_ANY)
3193: printf(":any");
3194: else
3195: printf(":%d", o->tun_remote);
3196: printf("\n");
3197:
3198: /* oCanonicalizePermittedCNAMEs */
3199: if ( o->num_permitted_cnames > 0) {
3200: printf("canonicalizePermittedcnames");
3201: for (i = 0; i < o->num_permitted_cnames; i++) {
3202: printf(" %s:%s", o->permitted_cnames[i].source_list,
3203: o->permitted_cnames[i].target_list);
3204: }
3205: printf("\n");
3206: }
3207:
3208: /* oControlPersist */
3209: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3210: dump_cfg_fmtint(oControlPersist, o->control_persist);
3211: else
3212: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3213:
3214: /* oEscapeChar */
3215: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3216: printf("escapechar none\n");
3217: else {
1.257 djm 3218: vis(buf, o->escape_char, VIS_WHITE, 0);
3219: printf("escapechar %s\n", buf);
1.221 djm 3220: }
3221:
3222: /* oIPQoS */
3223: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3224: printf("%s\n", iptos2str(o->ip_qos_bulk));
3225:
3226: /* oRekeyLimit */
1.249 dtucker 3227: printf("rekeylimit %llu %d\n",
3228: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3229:
3230: /* oStreamLocalBindMask */
3231: printf("streamlocalbindmask 0%o\n",
3232: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3233:
3234: /* oLogFacility */
3235: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3236:
3237: /* oProxyCommand / oProxyJump */
3238: if (o->jump_host == NULL)
3239: dump_cfg_string(oProxyCommand, o->proxy_command);
3240: else {
3241: /* Check for numeric addresses */
3242: i = strchr(o->jump_host, ':') != NULL ||
3243: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3244: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3245: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3246: /* optional additional jump spec */
3247: o->jump_extra == NULL ? "" : o->jump_extra,
3248: o->jump_extra == NULL ? "" : ",",
1.257 djm 3249: /* optional user */
3250: o->jump_user == NULL ? "" : o->jump_user,
3251: o->jump_user == NULL ? "" : "@",
3252: /* opening [ if hostname is numeric */
3253: i ? "[" : "",
3254: /* mandatory hostname */
3255: o->jump_host,
3256: /* closing ] if hostname is numeric */
3257: i ? "]" : "",
3258: /* optional port number */
3259: o->jump_port <= 0 ? "" : ":",
1.259 djm 3260: o->jump_port <= 0 ? "" : buf);
1.257 djm 3261: }
1.1 deraadt 3262: }
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