Annotation of src/usr.bin/ssh/readconf.c, Revision 1.377
1.377 ! djm 1: /* $OpenBSD: readconf.c,v 1.376 2023/03/31 04:23:02 djm 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"
1.58 markus 43: #include "cipher.h"
1.55 markus 44: #include "pathnames.h"
1.58 markus 45: #include "log.h"
1.227 djm 46: #include "sshkey.h"
1.220 millert 47: #include "misc.h"
1.58 markus 48: #include "readconf.h"
49: #include "match.h"
1.62 markus 50: #include "kex.h"
51: #include "mac.h"
1.206 djm 52: #include "uidswap.h"
1.221 djm 53: #include "myproposal.h"
1.224 djm 54: #include "digest.h"
1.1 deraadt 55:
56: /* Format of the configuration file:
57:
58: # Configuration data is parsed as follows:
59: # 1. command line options
60: # 2. user-specific file
61: # 3. system-wide file
62: # Any configuration value is only changed the first time it is set.
63: # Thus, host-specific definitions should be at the beginning of the
64: # configuration file, and defaults at the end.
65:
66: # Host-specific declarations. These may override anything above. A single
67: # host may match multiple declarations; these are processed in the order
68: # that they are given in.
69:
70: Host *.ngs.fi ngs.fi
1.96 markus 71: User foo
1.1 deraadt 72:
73: Host fake.com
1.306 jmc 74: Hostname another.host.name.real.org
1.1 deraadt 75: User blaah
76: Port 34289
77: ForwardX11 no
78: ForwardAgent no
79:
80: Host books.com
81: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 82: Ciphers 3des-cbc
1.1 deraadt 83:
84: Host fascist.blob.com
85: Port 23123
86: User tylonen
87: PasswordAuthentication no
88:
89: Host puukko.hut.fi
90: User t35124p
91: ProxyCommand ssh-proxy %h %p
92:
93: Host *.fr
1.96 markus 94: PublicKeyAuthentication no
1.1 deraadt 95:
96: Host *.su
1.266 djm 97: Ciphers aes128-ctr
1.1 deraadt 98: PasswordAuthentication no
99:
1.144 reyk 100: Host vpn.fake.com
101: Tunnel yes
102: TunnelDevice 3
103:
1.1 deraadt 104: # Defaults for various options
105: Host *
106: ForwardAgent no
1.50 markus 107: ForwardX11 no
1.1 deraadt 108: PasswordAuthentication yes
109: StrictHostKeyChecking yes
1.126 markus 110: TcpKeepAlive no
1.1 deraadt 111: IdentityFile ~/.ssh/identity
112: Port 22
113: EscapeChar ~
114:
115: */
116:
1.252 djm 117: static int read_config_file_depth(const char *filename, struct passwd *pw,
118: const char *host, const char *original_host, Options *options,
1.302 djm 119: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 120: static int process_config_line_depth(Options *options, struct passwd *pw,
121: const char *host, const char *original_host, char *line,
1.302 djm 122: const char *filename, int linenum, int *activep, int flags,
123: int *want_final_pass, int depth);
1.252 djm 124:
1.1 deraadt 125: /* Keyword tokens. */
126:
1.17 markus 127: typedef enum {
128: oBadOption,
1.252 djm 129: oHost, oMatch, oInclude,
1.186 djm 130: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
131: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 132: oPasswordAuthentication,
1.358 dtucker 133: oXAuthLocation,
1.317 dtucker 134: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.351 markus 135: oPermitRemoteOpen,
1.253 markus 136: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 137: oUser, oEscapeChar, oProxyCommand,
1.17 markus 138: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
139: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 140: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 141: oLogFacility, oLogLevel, oLogVerbose, oCiphers, oMacs,
1.221 djm 142: oPubkeyAuthentication,
1.67 markus 143: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 144: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 145: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 146: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 147: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 148: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 149: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 150: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 151: oHashKnownHosts,
1.277 bluhm 152: oTunnel, oTunnelDevice,
153: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 154: oVisualHostKey,
1.360 djm 155: oKexAlgorithms, oIPQoS, oRequestTTY, oSessionType, oStdinNull,
1.361 djm 156: oForkAfterAuthentication, 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,
1.369 djm 162: oSecurityKeyProvider, oKnownHostsCommand, oRequiredRSASize,
1.370 djm 163: oEnableEscapeCommandline,
1.273 djm 164: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 165: } OpCodes;
166:
167: /* Textual representations of the tokens. */
168:
1.17 markus 169: static struct {
170: const char *name;
171: OpCodes opcode;
172: } keywords[] = {
1.266 djm 173: /* Deprecated options */
1.273 djm 174: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 175: { "cipher", oDeprecated },
1.266 djm 176: { "fallbacktorsh", oDeprecated },
177: { "globalknownhostsfile2", oDeprecated },
178: { "rhostsauthentication", oDeprecated },
179: { "userknownhostsfile2", oDeprecated },
180: { "useroaming", oDeprecated },
181: { "usersh", oDeprecated },
1.294 dtucker 182: { "useprivilegedport", oDeprecated },
1.266 djm 183:
184: /* Unsupported options */
185: { "afstokenpassing", oUnsupported },
186: { "kerberosauthentication", oUnsupported },
187: { "kerberostgtpassing", oUnsupported },
1.318 dtucker 188: { "rsaauthentication", oUnsupported },
189: { "rhostsrsaauthentication", oUnsupported },
190: { "compressionlevel", oUnsupported },
1.266 djm 191:
192: /* Sometimes-unsupported options */
193: #if defined(GSSAPI)
194: { "gssapiauthentication", oGssAuthentication },
195: { "gssapidelegatecredentials", oGssDelegateCreds },
196: # else
197: { "gssapiauthentication", oUnsupported },
198: { "gssapidelegatecredentials", oUnsupported },
199: #endif
200: #ifdef ENABLE_PKCS11
1.304 djm 201: { "pkcs11provider", oPKCS11Provider },
1.266 djm 202: { "smartcarddevice", oPKCS11Provider },
203: # else
204: { "smartcarddevice", oUnsupported },
205: { "pkcs11provider", oUnsupported },
206: #endif
207:
1.17 markus 208: { "forwardagent", oForwardAgent },
209: { "forwardx11", oForwardX11 },
1.123 markus 210: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 211: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 212: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 213: { "xauthlocation", oXAuthLocation },
1.17 markus 214: { "gatewayports", oGatewayPorts },
215: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 216: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
217: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.358 dtucker 218: { "challengeresponseauthentication", oKbdInteractiveAuthentication }, /* alias */
219: { "skeyauthentication", oKbdInteractiveAuthentication }, /* alias */
220: { "tisauthentication", oKbdInteractiveAuthentication }, /* alias */
1.50 markus 221: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 222: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 223: { "hostbasedauthentication", oHostbasedAuthentication },
1.17 markus 224: { "identityfile", oIdentityFile },
1.174 stevesk 225: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 226: { "identitiesonly", oIdentitiesOnly },
1.241 djm 227: { "certificatefile", oCertificateFile },
1.246 jcs 228: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 229: { "identityagent", oIdentityAgent },
1.306 jmc 230: { "hostname", oHostname },
1.52 markus 231: { "hostkeyalias", oHostKeyAlias },
1.17 markus 232: { "proxycommand", oProxyCommand },
233: { "port", oPort },
1.25 markus 234: { "ciphers", oCiphers },
1.62 markus 235: { "macs", oMacs },
1.17 markus 236: { "remoteforward", oRemoteForward },
237: { "localforward", oLocalForward },
1.351 markus 238: { "permitremoteopen", oPermitRemoteOpen },
1.17 markus 239: { "user", oUser },
240: { "host", oHost },
1.206 djm 241: { "match", oMatch },
1.17 markus 242: { "escapechar", oEscapeChar },
243: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 244: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 245: { "connectionattempts", oConnectionAttempts },
246: { "batchmode", oBatchMode },
247: { "checkhostip", oCheckHostIP },
248: { "stricthostkeychecking", oStrictHostKeyChecking },
249: { "compression", oCompression },
1.126 markus 250: { "tcpkeepalive", oTCPKeepAlive },
251: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 252: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 253: { "syslogfacility", oLogFacility },
1.17 markus 254: { "loglevel", oLogLevel },
1.339 djm 255: { "logverbose", oLogVerbose },
1.71 markus 256: { "dynamicforward", oDynamicForward },
1.67 markus 257: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 258: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 259: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 260: { "bindaddress", oBindAddress },
1.282 djm 261: { "bindinterface", oBindInterface },
1.93 deraadt 262: { "clearallforwardings", oClearAllForwardings },
1.101 markus 263: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 264: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 265: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 266: { "rekeylimit", oRekeyLimit },
1.111 djm 267: { "connecttimeout", oConnectTimeout },
1.112 djm 268: { "addressfamily", oAddressFamily },
1.127 markus 269: { "serveraliveinterval", oServerAliveInterval },
270: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 271: { "sendenv", oSendEnv },
1.290 djm 272: { "setenv", oSetEnv },
1.132 djm 273: { "controlpath", oControlPath },
274: { "controlmaster", oControlMaster },
1.187 djm 275: { "controlpersist", oControlPersist },
1.136 djm 276: { "hashknownhosts", oHashKnownHosts },
1.252 djm 277: { "include", oInclude },
1.144 reyk 278: { "tunnel", oTunnel },
279: { "tunneldevice", oTunnelDevice },
280: { "localcommand", oLocalCommand },
281: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 282: { "remotecommand", oRemoteCommand },
1.167 grunk 283: { "visualhostkey", oVisualHostKey },
1.189 djm 284: { "kexalgorithms", oKexAlgorithms },
1.190 djm 285: { "ipqos", oIPQoS },
1.192 djm 286: { "requesttty", oRequestTTY },
1.359 djm 287: { "sessiontype", oSessionType },
1.360 djm 288: { "stdinnull", oStdinNull },
1.361 djm 289: { "forkafterauthentication", oForkAfterAuthentication },
1.205 djm 290: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 291: { "canonicaldomains", oCanonicalDomains },
1.209 djm 292: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
293: { "canonicalizehostname", oCanonicalizeHostname },
294: { "canonicalizemaxdots", oCanonicalizeMaxDots },
295: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 296: { "streamlocalbindmask", oStreamLocalBindMask },
297: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 298: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 299: { "fingerprinthash", oFingerprintHash },
1.229 djm 300: { "updatehostkeys", oUpdateHostkeys },
1.354 naddy 301: { "hostbasedacceptedalgorithms", oHostbasedAcceptedAlgorithms },
1.350 dtucker 302: { "hostbasedkeytypes", oHostbasedAcceptedAlgorithms }, /* obsolete */
1.352 dtucker 303: { "pubkeyacceptedalgorithms", oPubkeyAcceptedAlgorithms },
1.349 dtucker 304: { "pubkeyacceptedkeytypes", oPubkeyAcceptedAlgorithms }, /* obsolete */
1.199 djm 305: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 306: { "proxyjump", oProxyJump },
1.318 dtucker 307: { "securitykeyprovider", oSecurityKeyProvider },
1.346 djm 308: { "knownhostscommand", oKnownHostsCommand },
1.369 djm 309: { "requiredrsasize", oRequiredRSASize },
1.370 djm 310: { "enableescapecommandline", oEnableEscapeCommandline },
1.171 djm 311:
1.92 stevesk 312: { NULL, oBadOption }
1.13 markus 313: };
314:
1.351 markus 315: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 316:
317: const char *
318: kex_default_pk_alg(void)
319: {
1.344 djm 320: static char *pkalgs;
321:
322: if (pkalgs == NULL) {
323: char *all_key;
324:
325: all_key = sshkey_alg_list(0, 0, 1, ',');
326: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
327: free(all_key);
328: }
329: return pkalgs;
1.320 dtucker 330: }
331:
1.327 dtucker 332: char *
333: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
334: const char *user)
335: {
336: struct ssh_digest_ctx *md;
337: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
338:
339: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
340: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
341: ssh_digest_update(md, host, strlen(host)) < 0 ||
342: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
343: ssh_digest_update(md, user, strlen(user)) < 0 ||
344: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 345: fatal_f("mux digest failed");
1.327 dtucker 346: ssh_digest_free(md);
347: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
348: }
349:
1.19 markus 350: /*
351: * Adds a local TCP/IP port forward to options. Never returns if there is an
352: * error.
353: */
1.1 deraadt 354:
1.26 markus 355: void
1.220 millert 356: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 357: {
1.220 millert 358: struct Forward *fwd;
1.251 djm 359: int i;
1.185 djm 360:
1.251 djm 361: /* Don't add duplicates */
362: for (i = 0; i < options->num_local_forwards; i++) {
363: if (forward_equals(newfwd, options->local_forwards + i))
364: return;
365: }
1.234 deraadt 366: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 367: options->num_local_forwards + 1,
368: sizeof(*options->local_forwards));
1.17 markus 369: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 370:
1.172 stevesk 371: fwd->listen_host = newfwd->listen_host;
1.135 djm 372: fwd->listen_port = newfwd->listen_port;
1.220 millert 373: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 374: fwd->connect_host = newfwd->connect_host;
1.135 djm 375: fwd->connect_port = newfwd->connect_port;
1.220 millert 376: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 377: }
378:
1.19 markus 379: /*
380: * Adds a remote TCP/IP port forward to options. Never returns if there is
381: * an error.
382: */
1.1 deraadt 383:
1.26 markus 384: void
1.220 millert 385: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 386: {
1.220 millert 387: struct Forward *fwd;
1.251 djm 388: int i;
1.185 djm 389:
1.251 djm 390: /* Don't add duplicates */
391: for (i = 0; i < options->num_remote_forwards; i++) {
392: if (forward_equals(newfwd, options->remote_forwards + i))
393: return;
394: }
1.234 deraadt 395: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 396: options->num_remote_forwards + 1,
397: sizeof(*options->remote_forwards));
1.17 markus 398: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 399:
1.172 stevesk 400: fwd->listen_host = newfwd->listen_host;
1.135 djm 401: fwd->listen_port = newfwd->listen_port;
1.220 millert 402: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 403: fwd->connect_host = newfwd->connect_host;
1.135 djm 404: fwd->connect_port = newfwd->connect_port;
1.220 millert 405: fwd->connect_path = newfwd->connect_path;
1.194 markus 406: fwd->handle = newfwd->handle;
1.184 markus 407: fwd->allocated_port = 0;
1.1 deraadt 408: }
409:
1.90 stevesk 410: static void
411: clear_forwardings(Options *options)
412: {
413: int i;
414:
1.135 djm 415: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 416: free(options->local_forwards[i].listen_host);
1.220 millert 417: free(options->local_forwards[i].listen_path);
1.202 djm 418: free(options->local_forwards[i].connect_host);
1.220 millert 419: free(options->local_forwards[i].connect_path);
1.135 djm 420: }
1.185 djm 421: if (options->num_local_forwards > 0) {
1.202 djm 422: free(options->local_forwards);
1.185 djm 423: options->local_forwards = NULL;
424: }
1.90 stevesk 425: options->num_local_forwards = 0;
1.135 djm 426: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 427: free(options->remote_forwards[i].listen_host);
1.220 millert 428: free(options->remote_forwards[i].listen_path);
1.202 djm 429: free(options->remote_forwards[i].connect_host);
1.220 millert 430: free(options->remote_forwards[i].connect_path);
1.135 djm 431: }
1.185 djm 432: if (options->num_remote_forwards > 0) {
1.202 djm 433: free(options->remote_forwards);
1.185 djm 434: options->remote_forwards = NULL;
435: }
1.90 stevesk 436: options->num_remote_forwards = 0;
1.145 reyk 437: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 438: }
439:
1.195 dtucker 440: void
1.241 djm 441: add_certificate_file(Options *options, const char *path, int userprovided)
442: {
443: int i;
444:
445: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
446: fatal("Too many certificate files specified (max %d)",
447: SSH_MAX_CERTIFICATE_FILES);
448:
449: /* Avoid registering duplicates */
450: for (i = 0; i < options->num_certificate_files; i++) {
451: if (options->certificate_file_userprovided[i] == userprovided &&
452: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 453: debug2_f("ignoring duplicate key %s", path);
1.241 djm 454: return;
455: }
456: }
457:
458: options->certificate_file_userprovided[options->num_certificate_files] =
459: userprovided;
460: options->certificate_files[options->num_certificate_files++] =
461: xstrdup(path);
462: }
463:
464: void
1.195 dtucker 465: add_identity_file(Options *options, const char *dir, const char *filename,
466: int userprovided)
467: {
468: char *path;
1.219 djm 469: int i;
1.195 dtucker 470:
471: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
472: fatal("Too many identity files specified (max %d)",
473: SSH_MAX_IDENTITY_FILES);
474:
475: if (dir == NULL) /* no dir, filename is absolute */
476: path = xstrdup(filename);
1.276 djm 477: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
478: fatal("Identity file path %s too long", path);
1.219 djm 479:
480: /* Avoid registering duplicates */
481: for (i = 0; i < options->num_identity_files; i++) {
482: if (options->identity_file_userprovided[i] == userprovided &&
483: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 484: debug2_f("ignoring duplicate key %s", path);
1.219 djm 485: free(path);
486: return;
487: }
488: }
1.195 dtucker 489:
490: options->identity_file_userprovided[options->num_identity_files] =
491: userprovided;
492: options->identity_files[options->num_identity_files++] = path;
493: }
494:
1.206 djm 495: int
496: default_ssh_port(void)
497: {
498: static int port;
499: struct servent *sp;
500:
501: if (port == 0) {
502: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
503: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
504: }
505: return port;
506: }
507:
508: /*
509: * Execute a command in a shell.
510: * Return its exit status or -1 on abnormal exit.
511: */
512: static int
513: execute_in_shell(const char *cmd)
514: {
1.243 dtucker 515: char *shell;
1.206 djm 516: pid_t pid;
1.337 djm 517: int status;
1.206 djm 518:
519: if ((shell = getenv("SHELL")) == NULL)
520: shell = _PATH_BSHELL;
1.308 djm 521:
522: if (access(shell, X_OK) == -1) {
523: fatal("Shell \"%s\" is not executable: %s",
524: shell, strerror(errno));
525: }
1.206 djm 526:
527: debug("Executing command: '%.500s'", cmd);
528:
529: /* Fork and execute the command. */
530: if ((pid = fork()) == 0) {
1.245 djm 531: char *argv[4];
1.206 djm 532:
1.337 djm 533: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 534: fatal_f("stdfd_devnull failed");
1.206 djm 535: closefrom(STDERR_FILENO + 1);
1.245 djm 536:
537: argv[0] = shell;
538: argv[1] = "-c";
539: argv[2] = xstrdup(cmd);
540: argv[3] = NULL;
1.206 djm 541:
542: execv(argv[0], argv);
543: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
544: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 545: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 546: kill(getpid(), SIGTERM);
547: _exit(1);
548: }
549: /* Parent. */
1.307 deraadt 550: if (pid == -1)
1.340 djm 551: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 552:
553: while (waitpid(pid, &status, 0) == -1) {
554: if (errno != EINTR && errno != EAGAIN)
1.340 djm 555: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 556: }
557: if (!WIFEXITED(status)) {
558: error("command '%.100s' exited abnormally", cmd);
559: return -1;
1.221 djm 560: }
1.206 djm 561: debug3("command returned status %d", WEXITSTATUS(status));
562: return WEXITSTATUS(status);
563: }
564:
565: /*
566: * Parse and execute a Match directive.
567: */
568: static int
569: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 570: const char *host_arg, const char *original_host, int final_pass,
571: int *want_final_pass, const char *filename, int linenum)
1.206 djm 572: {
1.221 djm 573: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 574: const char *ruser;
1.221 djm 575: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 576: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 577: char uidstr[32];
1.206 djm 578:
579: /*
580: * Configuration is likely to be incomplete at this point so we
581: * must be prepared to use default values.
582: */
583: port = options->port <= 0 ? default_ssh_port() : options->port;
584: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 585: if (final_pass) {
1.250 djm 586: host = xstrdup(options->hostname);
587: } else if (options->hostname != NULL) {
1.212 djm 588: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 589: host = percent_expand(options->hostname,
590: "h", host_arg, (char *)NULL);
1.250 djm 591: } else {
1.211 djm 592: host = xstrdup(host_arg);
1.250 djm 593: }
1.206 djm 594:
1.221 djm 595: debug2("checking match for '%s' host %s originally %s",
596: cp, host, original_host);
597: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
1.356 djm 598: /* Terminate on comment */
599: if (*attrib == '#') {
600: cp = NULL; /* mark all arguments consumed */
601: break;
602: }
603: arg = criteria = NULL;
1.221 djm 604: this_result = 1;
1.374 jcs 605: if ((negate = (attrib[0] == '!')))
1.221 djm 606: attrib++;
1.356 djm 607: /* Criterion "all" has no argument and must appear alone */
1.213 dtucker 608: if (strcasecmp(attrib, "all") == 0) {
1.356 djm 609: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
610: *arg != '\0' && *arg != '#')) {
1.221 djm 611: error("%.200s line %d: '%s' cannot be combined "
612: "with other Match attributes",
613: filename, linenum, oattrib);
1.213 dtucker 614: result = -1;
615: goto out;
616: }
1.356 djm 617: if (arg != NULL && *arg == '#')
618: cp = NULL; /* mark all arguments consumed */
1.221 djm 619: if (result)
620: result = negate ? 0 : 1;
1.213 dtucker 621: goto out;
622: }
1.221 djm 623: attributes++;
1.356 djm 624: /* criteria "final" and "canonical" have no argument */
1.302 djm 625: if (strcasecmp(attrib, "canonical") == 0 ||
626: strcasecmp(attrib, "final") == 0) {
627: /*
628: * If the config requests "Match final" then remember
629: * this so we can perform a second pass later.
630: */
631: if (strcasecmp(attrib, "final") == 0 &&
632: want_final_pass != NULL)
633: *want_final_pass = 1;
634: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 635: if (r == (negate ? 1 : 0))
636: this_result = result = 0;
637: debug3("%.200s line %d: %smatched '%s'",
638: filename, linenum,
639: this_result ? "" : "not ", oattrib);
640: continue;
641: }
642: /* All other criteria require an argument */
1.356 djm 643: if ((arg = strdelim(&cp)) == NULL ||
644: *arg == '\0' || *arg == '#') {
1.206 djm 645: error("Missing Match criteria for %s", attrib);
1.211 djm 646: result = -1;
647: goto out;
1.206 djm 648: }
649: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 650: criteria = xstrdup(host);
1.235 djm 651: r = match_hostname(host, arg) == 1;
1.221 djm 652: if (r == (negate ? 1 : 0))
653: this_result = result = 0;
1.206 djm 654: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 655: criteria = xstrdup(original_host);
1.235 djm 656: r = match_hostname(original_host, arg) == 1;
1.221 djm 657: if (r == (negate ? 1 : 0))
658: this_result = result = 0;
1.206 djm 659: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 660: criteria = xstrdup(ruser);
1.235 djm 661: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 662: if (r == (negate ? 1 : 0))
663: this_result = result = 0;
1.206 djm 664: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 665: criteria = xstrdup(pw->pw_name);
1.235 djm 666: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 667: if (r == (negate ? 1 : 0))
668: this_result = result = 0;
1.210 djm 669: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 670: char *conn_hash_hex, *keyalias;
1.327 dtucker 671:
1.206 djm 672: if (gethostname(thishost, sizeof(thishost)) == -1)
673: fatal("gethostname: %s", strerror(errno));
674: strlcpy(shorthost, thishost, sizeof(shorthost));
675: shorthost[strcspn(thishost, ".")] = '\0';
676: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 677: snprintf(uidstr, sizeof(uidstr), "%llu",
678: (unsigned long long)pw->pw_uid);
1.327 dtucker 679: conn_hash_hex = ssh_connection_hash(thishost, host,
1.353 djm 680: portstr, ruser);
1.333 dtucker 681: keyalias = options->host_key_alias ?
682: options->host_key_alias : host;
1.206 djm 683:
684: cmd = percent_expand(arg,
1.327 dtucker 685: "C", conn_hash_hex,
1.206 djm 686: "L", shorthost,
687: "d", pw->pw_dir,
688: "h", host,
1.333 dtucker 689: "k", keyalias,
1.206 djm 690: "l", thishost,
1.221 djm 691: "n", original_host,
1.206 djm 692: "p", portstr,
693: "r", ruser,
694: "u", pw->pw_name,
1.288 djm 695: "i", uidstr,
1.206 djm 696: (char *)NULL);
1.327 dtucker 697: free(conn_hash_hex);
1.217 djm 698: if (result != 1) {
699: /* skip execution if prior predicate failed */
1.221 djm 700: debug3("%.200s line %d: skipped exec "
701: "\"%.100s\"", filename, linenum, cmd);
702: free(cmd);
703: continue;
704: }
705: r = execute_in_shell(cmd);
706: if (r == -1) {
707: fatal("%.200s line %d: match exec "
708: "'%.100s' error", filename,
709: linenum, cmd);
1.217 djm 710: }
1.221 djm 711: criteria = xstrdup(cmd);
1.206 djm 712: free(cmd);
1.221 djm 713: /* Force exit status to boolean */
714: r = r == 0;
715: if (r == (negate ? 1 : 0))
716: this_result = result = 0;
1.206 djm 717: } else {
718: error("Unsupported Match attribute %s", attrib);
1.211 djm 719: result = -1;
720: goto out;
1.206 djm 721: }
1.221 djm 722: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
723: filename, linenum, this_result ? "": "not ",
724: oattrib, criteria);
725: free(criteria);
1.213 dtucker 726: }
727: if (attributes == 0) {
728: error("One or more attributes required for Match");
729: result = -1;
730: goto out;
1.206 djm 731: }
1.221 djm 732: out:
733: if (result != -1)
734: debug2("match %sfound", result ? "" : "not ");
1.206 djm 735: *condition = cp;
1.211 djm 736: free(host);
1.206 djm 737: return result;
738: }
739:
1.286 djm 740: /* Remove environment variable by pattern */
741: static void
742: rm_env(Options *options, const char *arg, const char *filename, int linenum)
743: {
1.368 djm 744: u_int i, j, onum_send_env = options->num_send_env;
1.286 djm 745:
746: /* Remove an environment variable */
747: for (i = 0; i < options->num_send_env; ) {
1.367 millert 748: if (!match_pattern(options->send_env[i], arg + 1)) {
1.286 djm 749: i++;
750: continue;
751: }
752: debug3("%s line %d: removing environment %s",
1.367 millert 753: filename, linenum, options->send_env[i]);
1.286 djm 754: free(options->send_env[i]);
755: options->send_env[i] = NULL;
756: for (j = i; j < options->num_send_env - 1; j++) {
757: options->send_env[j] = options->send_env[j + 1];
758: options->send_env[j + 1] = NULL;
759: }
760: options->num_send_env--;
761: /* NB. don't increment i */
1.330 djm 762: }
763: if (onum_send_env != options->num_send_env) {
764: options->send_env = xrecallocarray(options->send_env,
765: onum_send_env, options->num_send_env,
766: sizeof(*options->send_env));
1.286 djm 767: }
768: }
769:
1.19 markus 770: /*
1.70 stevesk 771: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 772: */
1.26 markus 773: static OpCodes
1.199 djm 774: parse_token(const char *cp, const char *filename, int linenum,
775: const char *ignored_unknown)
1.1 deraadt 776: {
1.199 djm 777: int i;
1.1 deraadt 778:
1.17 markus 779: for (i = 0; keywords[i].name; i++)
1.199 djm 780: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 781: return keywords[i].opcode;
1.235 djm 782: if (ignored_unknown != NULL &&
783: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 784: return oIgnoredUnknownOption;
1.75 stevesk 785: error("%s: line %d: Bad configuration option: %s",
786: filename, linenum, cp);
1.17 markus 787: return oBadOption;
1.1 deraadt 788: }
789:
1.207 djm 790: /* Multistate option parsing */
791: struct multistate {
792: char *key;
793: int value;
794: };
795: static const struct multistate multistate_flag[] = {
796: { "true", 1 },
797: { "false", 0 },
798: { "yes", 1 },
799: { "no", 0 },
800: { NULL, -1 }
801: };
802: static const struct multistate multistate_yesnoask[] = {
803: { "true", 1 },
804: { "false", 0 },
805: { "yes", 1 },
806: { "no", 0 },
807: { "ask", 2 },
808: { NULL, -1 }
809: };
1.278 djm 810: static const struct multistate multistate_strict_hostkey[] = {
811: { "true", SSH_STRICT_HOSTKEY_YES },
812: { "false", SSH_STRICT_HOSTKEY_OFF },
813: { "yes", SSH_STRICT_HOSTKEY_YES },
814: { "no", SSH_STRICT_HOSTKEY_OFF },
815: { "ask", SSH_STRICT_HOSTKEY_ASK },
816: { "off", SSH_STRICT_HOSTKEY_OFF },
817: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
818: { NULL, -1 }
819: };
1.246 jcs 820: static const struct multistate multistate_yesnoaskconfirm[] = {
821: { "true", 1 },
822: { "false", 0 },
823: { "yes", 1 },
824: { "no", 0 },
825: { "ask", 2 },
826: { "confirm", 3 },
827: { NULL, -1 }
828: };
1.207 djm 829: static const struct multistate multistate_addressfamily[] = {
830: { "inet", AF_INET },
831: { "inet6", AF_INET6 },
832: { "any", AF_UNSPEC },
833: { NULL, -1 }
834: };
835: static const struct multistate multistate_controlmaster[] = {
836: { "true", SSHCTL_MASTER_YES },
837: { "yes", SSHCTL_MASTER_YES },
838: { "false", SSHCTL_MASTER_NO },
839: { "no", SSHCTL_MASTER_NO },
840: { "auto", SSHCTL_MASTER_AUTO },
841: { "ask", SSHCTL_MASTER_ASK },
842: { "autoask", SSHCTL_MASTER_AUTO_ASK },
843: { NULL, -1 }
844: };
845: static const struct multistate multistate_tunnel[] = {
846: { "ethernet", SSH_TUNMODE_ETHERNET },
847: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
848: { "true", SSH_TUNMODE_DEFAULT },
849: { "yes", SSH_TUNMODE_DEFAULT },
850: { "false", SSH_TUNMODE_NO },
851: { "no", SSH_TUNMODE_NO },
852: { NULL, -1 }
853: };
854: static const struct multistate multistate_requesttty[] = {
855: { "true", REQUEST_TTY_YES },
856: { "yes", REQUEST_TTY_YES },
857: { "false", REQUEST_TTY_NO },
858: { "no", REQUEST_TTY_NO },
859: { "force", REQUEST_TTY_FORCE },
860: { "auto", REQUEST_TTY_AUTO },
861: { NULL, -1 }
862: };
1.359 djm 863: static const struct multistate multistate_sessiontype[] = {
864: { "none", SESSION_TYPE_NONE },
865: { "subsystem", SESSION_TYPE_SUBSYSTEM },
866: { "default", SESSION_TYPE_DEFAULT },
867: { NULL, -1 }
868: };
1.209 djm 869: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 870: { "true", SSH_CANONICALISE_YES },
871: { "false", SSH_CANONICALISE_NO },
872: { "yes", SSH_CANONICALISE_YES },
873: { "no", SSH_CANONICALISE_NO },
874: { "always", SSH_CANONICALISE_ALWAYS },
875: { NULL, -1 }
876: };
1.364 djm 877: static const struct multistate multistate_pubkey_auth[] = {
878: { "true", SSH_PUBKEY_AUTH_ALL },
879: { "false", SSH_PUBKEY_AUTH_NO },
880: { "yes", SSH_PUBKEY_AUTH_ALL },
881: { "no", SSH_PUBKEY_AUTH_NO },
882: { "unbound", SSH_PUBKEY_AUTH_UNBOUND },
883: { "host-bound", SSH_PUBKEY_AUTH_HBOUND },
884: { NULL, -1 }
885: };
1.322 dtucker 886: static const struct multistate multistate_compression[] = {
887: #ifdef WITH_ZLIB
888: { "yes", COMP_ZLIB },
889: #endif
890: { "no", COMP_NONE },
891: { NULL, -1 }
892: };
1.207 djm 893:
1.334 djm 894: static int
895: parse_multistate_value(const char *arg, const char *filename, int linenum,
896: const struct multistate *multistate_ptr)
897: {
898: int i;
899:
1.344 djm 900: if (!arg || *arg == '\0') {
901: error("%s line %d: missing argument.", filename, linenum);
902: return -1;
903: }
1.334 djm 904: for (i = 0; multistate_ptr[i].key != NULL; i++) {
905: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
906: return multistate_ptr[i].value;
907: }
908: return -1;
909: }
910:
1.19 markus 911: /*
912: * Processes a single option line as used in the configuration files. This
913: * only sets those values that have not already been set.
914: */
1.14 markus 915: int
1.206 djm 916: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 917: const char *original_host, char *line, const char *filename,
918: int linenum, int *activep, int flags)
1.1 deraadt 919: {
1.252 djm 920: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 921: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 922: }
923:
924: #define WHITESPACE " \t\r\n"
925: static int
926: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
927: const char *original_host, char *line, const char *filename,
1.302 djm 928: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 929: {
1.366 dtucker 930: char *str, **charptr, *endofnumber, *keyword, *arg, *arg2, *p;
1.339 djm 931: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 932: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 933: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.377 ! djm 934: int remotefwd, dynamicfwd, ca_only = 0;
1.164 dtucker 935: LogLevel *log_level_ptr;
1.271 dtucker 936: SyslogFacility *log_facility_ptr;
1.201 dtucker 937: long long val64;
1.102 markus 938: size_t len;
1.220 millert 939: struct Forward fwd;
1.207 djm 940: const struct multistate *multistate_ptr;
1.208 djm 941: struct allowed_cname *cname;
1.252 djm 942: glob_t gl;
1.281 dtucker 943: const char *errstr;
1.356 djm 944: char **oav = NULL, **av;
945: int oac = 0, ac;
946: int ret = -1;
1.106 djm 947:
1.206 djm 948: if (activep == NULL) { /* We are processing a command line directive */
949: cmdline = 1;
950: activep = &cmdline;
951: }
952:
1.267 djm 953: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 954: if ((len = strlen(line)) == 0)
955: return 0;
956: for (len--; len > 0; len--) {
1.267 djm 957: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 958: break;
959: line[len] = '\0';
960: }
1.1 deraadt 961:
1.356 djm 962: str = line;
1.42 provos 963: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 964: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 965: return 0;
1.42 provos 966: /* Ignore leading whitespace. */
967: if (*keyword == '\0')
1.356 djm 968: keyword = strdelim(&str);
1.56 deraadt 969: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 970: return 0;
1.199 djm 971: /* Match lowercase keyword */
1.207 djm 972: lowercase(keyword);
1.17 markus 973:
1.356 djm 974: /* Prepare to parse remainder of line */
975: if (str != NULL)
976: str += strspn(str, WHITESPACE);
977: if (str == NULL || *str == '\0') {
978: error("%s line %d: no argument after keyword \"%s\"",
979: filename, linenum, keyword);
980: return -1;
981: }
1.199 djm 982: opcode = parse_token(keyword, filename, linenum,
983: options->ignored_unknown);
1.356 djm 984: if (argv_split(str, &oac, &oav, 1) != 0) {
985: error("%s line %d: invalid quotes", filename, linenum);
986: return -1;
987: }
988: ac = oac;
989: av = oav;
1.17 markus 990:
991: switch (opcode) {
992: case oBadOption:
1.19 markus 993: /* don't panic, but count bad options */
1.356 djm 994: goto out;
1.273 djm 995: case oIgnore:
1.356 djm 996: argv_consume(&ac);
997: break;
1.199 djm 998: case oIgnoredUnknownOption:
999: debug("%s line %d: Ignored unknown option \"%s\"",
1000: filename, linenum, keyword);
1.356 djm 1001: argv_consume(&ac);
1002: break;
1.111 djm 1003: case oConnectTimeout:
1004: intptr = &options->connection_timeout;
1.127 markus 1005: parse_time:
1.356 djm 1006: arg = argv_next(&ac, &av);
1.344 djm 1007: if (!arg || *arg == '\0') {
1008: error("%s line %d: missing time value.",
1.111 djm 1009: filename, linenum);
1.356 djm 1010: goto out;
1.344 djm 1011: }
1.221 djm 1012: if (strcmp(arg, "none") == 0)
1013: value = -1;
1.344 djm 1014: else if ((value = convtime(arg)) == -1) {
1015: error("%s line %d: invalid time value.",
1.111 djm 1016: filename, linenum);
1.356 djm 1017: goto out;
1.344 djm 1018: }
1.160 dtucker 1019: if (*activep && *intptr == -1)
1.111 djm 1020: *intptr = value;
1021: break;
1022:
1.17 markus 1023: case oForwardAgent:
1024: intptr = &options->forward_agent;
1.319 djm 1025:
1.356 djm 1026: arg = argv_next(&ac, &av);
1.344 djm 1027: if (!arg || *arg == '\0') {
1028: error("%s line %d: missing argument.",
1.319 djm 1029: filename, linenum);
1.356 djm 1030: goto out;
1.344 djm 1031: }
1.319 djm 1032:
1033: value = -1;
1034: multistate_ptr = multistate_flag;
1035: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1036: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1037: value = multistate_ptr[i].value;
1038: break;
1039: }
1040: }
1041: if (value != -1) {
1042: if (*activep && *intptr == -1)
1043: *intptr = value;
1044: break;
1045: }
1046: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1047: if (*activep && *intptr == -1)
1048: *intptr = 1;
1049:
1050: charptr = &options->forward_agent_sock_path;
1051: goto parse_agent_path;
1052:
1053: case oForwardX11:
1054: intptr = &options->forward_x11;
1.207 djm 1055: parse_flag:
1056: multistate_ptr = multistate_flag;
1057: parse_multistate:
1.356 djm 1058: arg = argv_next(&ac, &av);
1.334 djm 1059: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1060: multistate_ptr)) == -1) {
1.344 djm 1061: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1062: filename, linenum, arg);
1.356 djm 1063: goto out;
1.334 djm 1064: }
1.17 markus 1065: if (*activep && *intptr == -1)
1066: *intptr = value;
1067: break;
1068:
1.123 markus 1069: case oForwardX11Trusted:
1070: intptr = &options->forward_x11_trusted;
1071: goto parse_flag;
1.221 djm 1072:
1.186 djm 1073: case oForwardX11Timeout:
1074: intptr = &options->forward_x11_timeout;
1075: goto parse_time;
1.123 markus 1076:
1.17 markus 1077: case oGatewayPorts:
1.220 millert 1078: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1079: goto parse_flag;
1080:
1.153 markus 1081: case oExitOnForwardFailure:
1082: intptr = &options->exit_on_forward_failure;
1083: goto parse_flag;
1084:
1.17 markus 1085: case oPasswordAuthentication:
1086: intptr = &options->password_authentication;
1087: goto parse_flag;
1088:
1.48 markus 1089: case oKbdInteractiveAuthentication:
1090: intptr = &options->kbd_interactive_authentication;
1091: goto parse_flag;
1092:
1093: case oKbdInteractiveDevices:
1094: charptr = &options->kbd_interactive_devices;
1095: goto parse_string;
1096:
1.50 markus 1097: case oPubkeyAuthentication:
1.364 djm 1098: multistate_ptr = multistate_pubkey_auth;
1.50 markus 1099: intptr = &options->pubkey_authentication;
1.364 djm 1100: goto parse_multistate;
1.30 markus 1101:
1.72 markus 1102: case oHostbasedAuthentication:
1103: intptr = &options->hostbased_authentication;
1104: goto parse_flag;
1105:
1.118 markus 1106: case oGssAuthentication:
1107: intptr = &options->gss_authentication;
1108: goto parse_flag;
1109:
1110: case oGssDelegateCreds:
1111: intptr = &options->gss_deleg_creds;
1112: goto parse_flag;
1113:
1.17 markus 1114: case oBatchMode:
1115: intptr = &options->batch_mode;
1116: goto parse_flag;
1117:
1118: case oCheckHostIP:
1119: intptr = &options->check_host_ip;
1.167 grunk 1120: goto parse_flag;
1.17 markus 1121:
1.107 jakob 1122: case oVerifyHostKeyDNS:
1123: intptr = &options->verify_host_key_dns;
1.207 djm 1124: multistate_ptr = multistate_yesnoask;
1125: goto parse_multistate;
1.107 jakob 1126:
1.17 markus 1127: case oStrictHostKeyChecking:
1128: intptr = &options->strict_host_key_checking;
1.278 djm 1129: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1130: goto parse_multistate;
1.17 markus 1131:
1132: case oCompression:
1133: intptr = &options->compression;
1.322 dtucker 1134: multistate_ptr = multistate_compression;
1135: goto parse_multistate;
1.17 markus 1136:
1.126 markus 1137: case oTCPKeepAlive:
1138: intptr = &options->tcp_keep_alive;
1.17 markus 1139: goto parse_flag;
1140:
1.91 markus 1141: case oNoHostAuthenticationForLocalhost:
1142: intptr = &options->no_host_authentication_for_localhost;
1143: goto parse_flag;
1144:
1.17 markus 1145: case oNumberOfPasswordPrompts:
1146: intptr = &options->number_of_password_prompts;
1147: goto parse_int;
1148:
1.105 markus 1149: case oRekeyLimit:
1.356 djm 1150: arg = argv_next(&ac, &av);
1.344 djm 1151: if (!arg || *arg == '\0') {
1152: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1153: linenum);
1.356 djm 1154: goto out;
1.344 djm 1155: }
1.198 dtucker 1156: if (strcmp(arg, "default") == 0) {
1157: val64 = 0;
1158: } else {
1.344 djm 1159: if (scan_scaled(arg, &val64) == -1) {
1160: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1161: filename, linenum, arg, strerror(errno));
1.356 djm 1162: goto out;
1.344 djm 1163: }
1164: if (val64 != 0 && val64 < 16) {
1165: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1166: filename, linenum);
1.356 djm 1167: goto out;
1.344 djm 1168: }
1.105 markus 1169: }
1.165 djm 1170: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1171: options->rekey_limit = val64;
1.356 djm 1172: if (ac != 0) { /* optional rekey interval present */
1173: if (strcmp(av[0], "none") == 0) {
1174: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1175: break;
1176: }
1177: intptr = &options->rekey_interval;
1178: goto parse_time;
1179: }
1.105 markus 1180: break;
1181:
1.17 markus 1182: case oIdentityFile:
1.356 djm 1183: arg = argv_next(&ac, &av);
1.344 djm 1184: if (!arg || *arg == '\0') {
1185: error("%.200s line %d: Missing argument.",
1186: filename, linenum);
1.356 djm 1187: goto out;
1.344 djm 1188: }
1.17 markus 1189: if (*activep) {
1.50 markus 1190: intptr = &options->num_identity_files;
1.344 djm 1191: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1192: error("%.200s line %d: Too many identity files "
1193: "specified (max %d).", filename, linenum,
1194: SSH_MAX_IDENTITY_FILES);
1.356 djm 1195: goto out;
1.344 djm 1196: }
1.221 djm 1197: add_identity_file(options, NULL,
1198: arg, flags & SSHCONF_USERCONF);
1.17 markus 1199: }
1200: break;
1201:
1.241 djm 1202: case oCertificateFile:
1.356 djm 1203: arg = argv_next(&ac, &av);
1.344 djm 1204: if (!arg || *arg == '\0') {
1205: error("%.200s line %d: Missing argument.",
1.241 djm 1206: filename, linenum);
1.356 djm 1207: goto out;
1.344 djm 1208: }
1.241 djm 1209: if (*activep) {
1210: intptr = &options->num_certificate_files;
1211: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1212: error("%.200s line %d: Too many certificate "
1.241 djm 1213: "files specified (max %d).",
1214: filename, linenum,
1215: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1216: goto out;
1.241 djm 1217: }
1218: add_certificate_file(options, arg,
1219: flags & SSHCONF_USERCONF);
1220: }
1221: break;
1222:
1.34 markus 1223: case oXAuthLocation:
1224: charptr=&options->xauth_location;
1225: goto parse_string;
1226:
1.17 markus 1227: case oUser:
1228: charptr = &options->user;
1229: parse_string:
1.356 djm 1230: arg = argv_next(&ac, &av);
1.344 djm 1231: if (!arg || *arg == '\0') {
1232: error("%.200s line %d: Missing argument.",
1.193 djm 1233: filename, linenum);
1.356 djm 1234: goto out;
1.344 djm 1235: }
1.17 markus 1236: if (*activep && *charptr == NULL)
1.38 provos 1237: *charptr = xstrdup(arg);
1.17 markus 1238: break;
1239:
1240: case oGlobalKnownHostsFile:
1.193 djm 1241: cpptr = (char **)&options->system_hostfiles;
1242: uintptr = &options->num_system_hostfiles;
1243: max_entries = SSH_MAX_HOSTS_FILES;
1244: parse_char_array:
1.356 djm 1245: i = 0;
1.357 djm 1246: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1247: while ((arg = argv_next(&ac, &av)) != NULL) {
1248: if (*arg == '\0') {
1249: error("%s line %d: keyword %s empty argument",
1250: filename, linenum, keyword);
1251: goto out;
1252: }
1253: /* Allow "none" only in first position */
1254: if (strcasecmp(arg, "none") == 0) {
1255: if (i > 0 || ac > 0) {
1256: error("%s line %d: keyword %s \"none\" "
1257: "argument must appear alone.",
1258: filename, linenum, keyword);
1259: goto out;
1260: }
1261: }
1262: i++;
1.357 djm 1263: if (*activep && value) {
1.344 djm 1264: if ((*uintptr) >= max_entries) {
1.356 djm 1265: error("%s line %d: too many %s "
1266: "entries.", filename, linenum,
1267: keyword);
1268: goto out;
1.344 djm 1269: }
1.193 djm 1270: cpptr[(*uintptr)++] = xstrdup(arg);
1271: }
1272: }
1.356 djm 1273: break;
1.17 markus 1274:
1275: case oUserKnownHostsFile:
1.193 djm 1276: cpptr = (char **)&options->user_hostfiles;
1277: uintptr = &options->num_user_hostfiles;
1278: max_entries = SSH_MAX_HOSTS_FILES;
1279: goto parse_char_array;
1.27 markus 1280:
1.306 jmc 1281: case oHostname:
1.17 markus 1282: charptr = &options->hostname;
1283: goto parse_string;
1284:
1.52 markus 1285: case oHostKeyAlias:
1286: charptr = &options->host_key_alias;
1287: goto parse_string;
1288:
1.67 markus 1289: case oPreferredAuthentications:
1290: charptr = &options->preferred_authentications;
1291: goto parse_string;
1292:
1.77 markus 1293: case oBindAddress:
1294: charptr = &options->bind_address;
1295: goto parse_string;
1296:
1.282 djm 1297: case oBindInterface:
1298: charptr = &options->bind_interface;
1299: goto parse_string;
1300:
1.183 markus 1301: case oPKCS11Provider:
1302: charptr = &options->pkcs11_provider;
1.86 markus 1303: goto parse_string;
1.85 jakob 1304:
1.310 djm 1305: case oSecurityKeyProvider:
1306: charptr = &options->sk_provider;
1307: goto parse_string;
1308:
1.346 djm 1309: case oKnownHostsCommand:
1310: charptr = &options->known_hosts_command;
1311: goto parse_command;
1312:
1.17 markus 1313: case oProxyCommand:
1.144 reyk 1314: charptr = &options->proxy_command;
1.257 djm 1315: /* Ignore ProxyCommand if ProxyJump already specified */
1316: if (options->jump_host != NULL)
1317: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1318: parse_command:
1.356 djm 1319: if (str == NULL) {
1.344 djm 1320: error("%.200s line %d: Missing argument.",
1321: filename, linenum);
1.356 djm 1322: goto out;
1.344 djm 1323: }
1.356 djm 1324: len = strspn(str, WHITESPACE "=");
1.17 markus 1325: if (*activep && *charptr == NULL)
1.356 djm 1326: *charptr = xstrdup(str + len);
1327: argv_consume(&ac);
1328: break;
1.17 markus 1329:
1.257 djm 1330: case oProxyJump:
1.356 djm 1331: if (str == NULL) {
1.344 djm 1332: error("%.200s line %d: Missing argument.",
1.257 djm 1333: filename, linenum);
1.356 djm 1334: goto out;
1.257 djm 1335: }
1.356 djm 1336: len = strspn(str, WHITESPACE "=");
1337: /* XXX use argv? */
1338: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1339: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1340: filename, linenum, str + len);
1341: goto out;
1.257 djm 1342: }
1.356 djm 1343: argv_consume(&ac);
1344: break;
1.257 djm 1345:
1.17 markus 1346: case oPort:
1.356 djm 1347: arg = argv_next(&ac, &av);
1.344 djm 1348: if (!arg || *arg == '\0') {
1349: error("%.200s line %d: Missing argument.",
1.300 naddy 1350: filename, linenum);
1.356 djm 1351: goto out;
1.344 djm 1352: }
1.300 naddy 1353: value = a2port(arg);
1.344 djm 1354: if (value <= 0) {
1355: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1356: filename, linenum, arg);
1.356 djm 1357: goto out;
1.344 djm 1358: }
1.300 naddy 1359: if (*activep && options->port == -1)
1360: options->port = value;
1361: break;
1362:
1363: case oConnectionAttempts:
1364: intptr = &options->connection_attempts;
1.17 markus 1365: parse_int:
1.356 djm 1366: arg = argv_next(&ac, &av);
1.344 djm 1367: if ((errstr = atoi_err(arg, &value)) != NULL) {
1368: error("%s line %d: integer value %s.",
1.281 dtucker 1369: filename, linenum, errstr);
1.356 djm 1370: goto out;
1.344 djm 1371: }
1.17 markus 1372: if (*activep && *intptr == -1)
1373: *intptr = value;
1374: break;
1375:
1.25 markus 1376: case oCiphers:
1.356 djm 1377: arg = argv_next(&ac, &av);
1.344 djm 1378: if (!arg || *arg == '\0') {
1379: error("%.200s line %d: Missing argument.",
1380: filename, linenum);
1.356 djm 1381: goto out;
1.344 djm 1382: }
1.309 naddy 1383: if (*arg != '-' &&
1.344 djm 1384: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1385: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1386: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1387: goto out;
1.344 djm 1388: }
1.25 markus 1389: if (*activep && options->ciphers == NULL)
1.38 provos 1390: options->ciphers = xstrdup(arg);
1.25 markus 1391: break;
1392:
1.62 markus 1393: case oMacs:
1.356 djm 1394: arg = argv_next(&ac, &av);
1.344 djm 1395: if (!arg || *arg == '\0') {
1396: error("%.200s line %d: Missing argument.",
1397: filename, linenum);
1.356 djm 1398: goto out;
1.344 djm 1399: }
1.309 naddy 1400: if (*arg != '-' &&
1.344 djm 1401: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1402: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1403: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1404: goto out;
1.344 djm 1405: }
1.62 markus 1406: if (*activep && options->macs == NULL)
1407: options->macs = xstrdup(arg);
1408: break;
1409:
1.189 djm 1410: case oKexAlgorithms:
1.356 djm 1411: arg = argv_next(&ac, &av);
1.344 djm 1412: if (!arg || *arg == '\0') {
1413: error("%.200s line %d: Missing argument.",
1.189 djm 1414: filename, linenum);
1.356 djm 1415: goto out;
1.344 djm 1416: }
1.268 djm 1417: if (*arg != '-' &&
1.309 naddy 1418: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1419: arg + 1 : arg)) {
1420: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1421: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1422: goto out;
1.344 djm 1423: }
1.189 djm 1424: if (*activep && options->kex_algorithms == NULL)
1425: options->kex_algorithms = xstrdup(arg);
1426: break;
1427:
1.76 markus 1428: case oHostKeyAlgorithms:
1.238 markus 1429: charptr = &options->hostkeyalgorithms;
1.377 ! djm 1430: ca_only = 0;
1.349 dtucker 1431: parse_pubkey_algos:
1.356 djm 1432: arg = argv_next(&ac, &av);
1.344 djm 1433: if (!arg || *arg == '\0') {
1434: error("%.200s line %d: Missing argument.",
1.238 markus 1435: filename, linenum);
1.356 djm 1436: goto out;
1.344 djm 1437: }
1.268 djm 1438: if (*arg != '-' &&
1.309 naddy 1439: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.377 ! djm 1440: arg + 1 : arg, 1, ca_only)) {
1.344 djm 1441: error("%s line %d: Bad key types '%s'.",
1442: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1443: goto out;
1.344 djm 1444: }
1.238 markus 1445: if (*activep && *charptr == NULL)
1446: *charptr = xstrdup(arg);
1.76 markus 1447: break;
1448:
1.298 djm 1449: case oCASignatureAlgorithms:
1450: charptr = &options->ca_sign_algorithms;
1.377 ! djm 1451: ca_only = 1;
1.349 dtucker 1452: goto parse_pubkey_algos;
1.298 djm 1453:
1.17 markus 1454: case oLogLevel:
1.164 dtucker 1455: log_level_ptr = &options->log_level;
1.356 djm 1456: arg = argv_next(&ac, &av);
1.38 provos 1457: value = log_level_number(arg);
1.344 djm 1458: if (value == SYSLOG_LEVEL_NOT_SET) {
1459: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1460: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1461: goto out;
1.344 djm 1462: }
1.164 dtucker 1463: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1464: *log_level_ptr = (LogLevel) value;
1.17 markus 1465: break;
1466:
1.271 dtucker 1467: case oLogFacility:
1468: log_facility_ptr = &options->log_facility;
1.356 djm 1469: arg = argv_next(&ac, &av);
1.271 dtucker 1470: value = log_facility_number(arg);
1.344 djm 1471: if (value == SYSLOG_FACILITY_NOT_SET) {
1472: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1473: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1474: goto out;
1.344 djm 1475: }
1.271 dtucker 1476: if (*log_facility_ptr == -1)
1477: *log_facility_ptr = (SyslogFacility) value;
1478: break;
1479:
1.339 djm 1480: case oLogVerbose:
1481: cppptr = &options->log_verbose;
1482: uintptr = &options->num_log_verbose;
1.356 djm 1483: i = 0;
1484: while ((arg = argv_next(&ac, &av)) != NULL) {
1485: if (*arg == '\0') {
1486: error("%s line %d: keyword %s empty argument",
1487: filename, linenum, keyword);
1488: goto out;
1489: }
1490: /* Allow "none" only in first position */
1491: if (strcasecmp(arg, "none") == 0) {
1492: if (i > 0 || ac > 0) {
1493: error("%s line %d: keyword %s \"none\" "
1494: "argument must appear alone.",
1495: filename, linenum, keyword);
1496: goto out;
1497: }
1498: }
1499: i++;
1500: if (*activep && *uintptr == 0) {
1.339 djm 1501: *cppptr = xrecallocarray(*cppptr, *uintptr,
1502: *uintptr + 1, sizeof(**cppptr));
1503: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1504: }
1505: }
1.356 djm 1506: break;
1.339 djm 1507:
1.88 stevesk 1508: case oLocalForward:
1.17 markus 1509: case oRemoteForward:
1.168 stevesk 1510: case oDynamicForward:
1.356 djm 1511: arg = argv_next(&ac, &av);
1.344 djm 1512: if (!arg || *arg == '\0') {
1513: error("%.200s line %d: Missing argument.",
1.88 stevesk 1514: filename, linenum);
1.356 djm 1515: goto out;
1.344 djm 1516: }
1.135 djm 1517:
1.279 markus 1518: remotefwd = (opcode == oRemoteForward);
1519: dynamicfwd = (opcode == oDynamicForward);
1520:
1521: if (!dynamicfwd) {
1.356 djm 1522: arg2 = argv_next(&ac, &av);
1.279 markus 1523: if (arg2 == NULL || *arg2 == '\0') {
1524: if (remotefwd)
1525: dynamicfwd = 1;
1.344 djm 1526: else {
1527: error("%.200s line %d: Missing target "
1.279 markus 1528: "argument.", filename, linenum);
1.356 djm 1529: goto out;
1.344 djm 1530: }
1.279 markus 1531: } else {
1532: /* construct a string for parse_forward */
1533: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1534: arg2);
1535: }
1536: }
1537: if (dynamicfwd)
1.168 stevesk 1538: strlcpy(fwdarg, arg, sizeof(fwdarg));
1539:
1.344 djm 1540: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1541: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1542: filename, linenum);
1.356 djm 1543: goto out;
1.344 djm 1544: }
1.135 djm 1545:
1.88 stevesk 1546: if (*activep) {
1.279 markus 1547: if (remotefwd) {
1548: add_remote_forward(options, &fwd);
1549: } else {
1.135 djm 1550: add_local_forward(options, &fwd);
1.279 markus 1551: }
1.88 stevesk 1552: }
1.17 markus 1553: break;
1.71 markus 1554:
1.351 markus 1555: case oPermitRemoteOpen:
1556: uintptr = &options->num_permitted_remote_opens;
1557: cppptr = &options->permitted_remote_opens;
1558: uvalue = *uintptr; /* modified later */
1.371 djm 1559: i = 0;
1.356 djm 1560: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1561: arg2 = xstrdup(arg);
1.371 djm 1562: /* Allow any/none only in first position */
1563: if (strcasecmp(arg, "none") == 0 ||
1564: strcasecmp(arg, "any") == 0) {
1565: if (i > 0 || ac > 0) {
1566: error("%s line %d: keyword %s \"%s\" "
1567: "argument must appear alone.",
1568: filename, linenum, keyword, arg);
1.376 djm 1569: free(arg2);
1.371 djm 1570: goto out;
1571: }
1572: } else {
1573: p = hpdelim(&arg);
1574: if (p == NULL) {
1575: fatal("%s line %d: missing host in %s",
1576: filename, linenum,
1577: lookup_opcode_name(opcode));
1578: }
1579: p = cleanhostname(p);
1580: /*
1581: * don't want to use permitopen_port to avoid
1582: * dependency on channels.[ch] here.
1583: */
1584: if (arg == NULL || (strcmp(arg, "*") != 0 &&
1585: a2port(arg) <= 0)) {
1586: fatal("%s line %d: bad port number "
1587: "in %s", filename, linenum,
1588: lookup_opcode_name(opcode));
1589: }
1.351 markus 1590: }
1591: if (*activep && uvalue == 0) {
1592: opt_array_append(filename, linenum,
1593: lookup_opcode_name(opcode),
1594: cppptr, uintptr, arg2);
1595: }
1596: free(arg2);
1.371 djm 1597: i++;
1.351 markus 1598: }
1.371 djm 1599: if (i == 0)
1600: fatal("%s line %d: missing %s specification",
1601: filename, linenum, lookup_opcode_name(opcode));
1.351 markus 1602: break;
1603:
1.90 stevesk 1604: case oClearAllForwardings:
1605: intptr = &options->clear_forwardings;
1606: goto parse_flag;
1607:
1.17 markus 1608: case oHost:
1.344 djm 1609: if (cmdline) {
1610: error("Host directive not supported as a command-line "
1.206 djm 1611: "option");
1.356 djm 1612: goto out;
1.344 djm 1613: }
1.17 markus 1614: *activep = 0;
1.191 djm 1615: arg2 = NULL;
1.356 djm 1616: while ((arg = argv_next(&ac, &av)) != NULL) {
1617: if (*arg == '\0') {
1618: error("%s line %d: keyword %s empty argument",
1619: filename, linenum, keyword);
1620: goto out;
1621: }
1622: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1623: argv_consume(&ac);
1.252 djm 1624: break;
1.356 djm 1625: }
1.191 djm 1626: negated = *arg == '!';
1627: if (negated)
1628: arg++;
1.38 provos 1629: if (match_pattern(host, arg)) {
1.191 djm 1630: if (negated) {
1631: debug("%.200s line %d: Skipping Host "
1632: "block because of negated match "
1633: "for %.100s", filename, linenum,
1634: arg);
1635: *activep = 0;
1.356 djm 1636: argv_consume(&ac);
1.191 djm 1637: break;
1638: }
1639: if (!*activep)
1640: arg2 = arg; /* logged below */
1.17 markus 1641: *activep = 1;
1642: }
1.191 djm 1643: }
1644: if (*activep)
1645: debug("%.200s line %d: Applying options for %.100s",
1646: filename, linenum, arg2);
1.356 djm 1647: break;
1.17 markus 1648:
1.206 djm 1649: case oMatch:
1.344 djm 1650: if (cmdline) {
1651: error("Host directive not supported as a command-line "
1.206 djm 1652: "option");
1.356 djm 1653: goto out;
1.344 djm 1654: }
1.356 djm 1655: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1656: flags & SSHCONF_FINAL, want_final_pass,
1657: filename, linenum);
1.344 djm 1658: if (value < 0) {
1659: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1660: linenum);
1.356 djm 1661: goto out;
1.344 djm 1662: }
1.252 djm 1663: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1664: /*
1665: * If match_cfg_line() didn't consume all its arguments then
1666: * arrange for the extra arguments check below to fail.
1667: */
1668:
1669: if (str == NULL || *str == '\0')
1670: argv_consume(&ac);
1.206 djm 1671: break;
1672:
1.17 markus 1673: case oEscapeChar:
1674: intptr = &options->escape_char;
1.356 djm 1675: arg = argv_next(&ac, &av);
1.344 djm 1676: if (!arg || *arg == '\0') {
1677: error("%.200s line %d: Missing argument.",
1678: filename, linenum);
1.356 djm 1679: goto out;
1.344 djm 1680: }
1.236 djm 1681: if (strcmp(arg, "none") == 0)
1682: value = SSH_ESCAPECHAR_NONE;
1683: else if (arg[1] == '\0')
1684: value = (u_char) arg[0];
1685: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1686: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1687: value = (u_char) arg[1] & 31;
1.17 markus 1688: else {
1.344 djm 1689: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1690: filename, linenum);
1.356 djm 1691: goto out;
1.17 markus 1692: }
1693: if (*activep && *intptr == -1)
1694: *intptr = value;
1.112 djm 1695: break;
1696:
1697: case oAddressFamily:
1.114 djm 1698: intptr = &options->address_family;
1.207 djm 1699: multistate_ptr = multistate_addressfamily;
1700: goto parse_multistate;
1.17 markus 1701:
1.101 markus 1702: case oEnableSSHKeysign:
1703: intptr = &options->enable_ssh_keysign;
1704: goto parse_flag;
1705:
1.128 markus 1706: case oIdentitiesOnly:
1707: intptr = &options->identities_only;
1708: goto parse_flag;
1709:
1.127 markus 1710: case oServerAliveInterval:
1711: intptr = &options->server_alive_interval;
1712: goto parse_time;
1713:
1714: case oServerAliveCountMax:
1715: intptr = &options->server_alive_count_max;
1716: goto parse_int;
1717:
1.130 djm 1718: case oSendEnv:
1.356 djm 1719: while ((arg = argv_next(&ac, &av)) != NULL) {
1720: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1721: error("%s line %d: Invalid environment name.",
1.130 djm 1722: filename, linenum);
1.356 djm 1723: goto out;
1.344 djm 1724: }
1.137 djm 1725: if (!*activep)
1726: continue;
1.286 djm 1727: if (*arg == '-') {
1728: /* Removing an env var */
1729: rm_env(options, arg, filename, linenum);
1730: continue;
1731: }
1.368 djm 1732: opt_array_append(filename, linenum,
1733: lookup_opcode_name(opcode),
1734: &options->send_env, &options->num_send_env, arg);
1.130 djm 1735: }
1736: break;
1737:
1.290 djm 1738: case oSetEnv:
1739: value = options->num_setenv;
1.356 djm 1740: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1741: if (strchr(arg, '=') == NULL) {
1742: error("%s line %d: Invalid SetEnv.",
1.290 djm 1743: filename, linenum);
1.356 djm 1744: goto out;
1.344 djm 1745: }
1.290 djm 1746: if (!*activep || value != 0)
1747: continue;
1.368 djm 1748: if (lookup_setenv_in_list(arg, options->setenv,
1749: options->num_setenv) != NULL) {
1750: debug2("%s line %d: ignoring duplicate env "
1751: "name \"%.64s\"", filename, linenum, arg);
1752: continue;
1.344 djm 1753: }
1.368 djm 1754: opt_array_append(filename, linenum,
1755: lookup_opcode_name(opcode),
1756: &options->setenv, &options->num_setenv, arg);
1.290 djm 1757: }
1758: break;
1759:
1.132 djm 1760: case oControlPath:
1761: charptr = &options->control_path;
1762: goto parse_string;
1763:
1764: case oControlMaster:
1765: intptr = &options->control_master;
1.207 djm 1766: multistate_ptr = multistate_controlmaster;
1767: goto parse_multistate;
1.132 djm 1768:
1.187 djm 1769: case oControlPersist:
1770: /* no/false/yes/true, or a time spec */
1771: intptr = &options->control_persist;
1.356 djm 1772: arg = argv_next(&ac, &av);
1.344 djm 1773: if (!arg || *arg == '\0') {
1774: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1775: " argument.", filename, linenum);
1.356 djm 1776: goto out;
1.344 djm 1777: }
1.187 djm 1778: value = 0;
1779: value2 = 0; /* timeout */
1780: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1781: value = 0;
1782: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1783: value = 1;
1784: else if ((value2 = convtime(arg)) >= 0)
1785: value = 1;
1.344 djm 1786: else {
1787: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1788: filename, linenum);
1.356 djm 1789: goto out;
1.344 djm 1790: }
1.187 djm 1791: if (*activep && *intptr == -1) {
1792: *intptr = value;
1793: options->control_persist_timeout = value2;
1794: }
1795: break;
1796:
1.136 djm 1797: case oHashKnownHosts:
1798: intptr = &options->hash_known_hosts;
1799: goto parse_flag;
1800:
1.144 reyk 1801: case oTunnel:
1802: intptr = &options->tun_open;
1.207 djm 1803: multistate_ptr = multistate_tunnel;
1804: goto parse_multistate;
1.144 reyk 1805:
1806: case oTunnelDevice:
1.356 djm 1807: arg = argv_next(&ac, &av);
1.344 djm 1808: if (!arg || *arg == '\0') {
1809: error("%.200s line %d: Missing argument.",
1810: filename, linenum);
1.356 djm 1811: goto out;
1.344 djm 1812: }
1.144 reyk 1813: value = a2tun(arg, &value2);
1.344 djm 1814: if (value == SSH_TUNID_ERR) {
1815: error("%.200s line %d: Bad tun device.",
1816: filename, linenum);
1.356 djm 1817: goto out;
1.344 djm 1818: }
1.355 dtucker 1819: if (*activep && options->tun_local == -1) {
1.144 reyk 1820: options->tun_local = value;
1821: options->tun_remote = value2;
1822: }
1823: break;
1824:
1825: case oLocalCommand:
1826: charptr = &options->local_command;
1827: goto parse_command;
1828:
1829: case oPermitLocalCommand:
1830: intptr = &options->permit_local_command;
1831: goto parse_flag;
1832:
1.277 bluhm 1833: case oRemoteCommand:
1834: charptr = &options->remote_command;
1835: goto parse_command;
1836:
1.167 grunk 1837: case oVisualHostKey:
1838: intptr = &options->visual_host_key;
1839: goto parse_flag;
1840:
1.252 djm 1841: case oInclude:
1.344 djm 1842: if (cmdline) {
1843: error("Include directive not supported as a "
1.252 djm 1844: "command-line option");
1.356 djm 1845: goto out;
1.344 djm 1846: }
1.252 djm 1847: value = 0;
1.356 djm 1848: while ((arg = argv_next(&ac, &av)) != NULL) {
1849: if (*arg == '\0') {
1850: error("%s line %d: keyword %s empty argument",
1851: filename, linenum, keyword);
1852: goto out;
1853: }
1.252 djm 1854: /*
1855: * Ensure all paths are anchored. User configuration
1856: * files may begin with '~/' but system configurations
1857: * must not. If the path is relative, then treat it
1858: * as living in ~/.ssh for user configurations or
1859: * /etc/ssh for system ones.
1860: */
1.344 djm 1861: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1862: error("%.200s line %d: bad include path %s.",
1.252 djm 1863: filename, linenum, arg);
1.356 djm 1864: goto out;
1.344 djm 1865: }
1.301 djm 1866: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1867: xasprintf(&arg2, "%s/%s",
1868: (flags & SSHCONF_USERCONF) ?
1869: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1870: } else
1871: arg2 = xstrdup(arg);
1872: memset(&gl, 0, sizeof(gl));
1873: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1874: if (r == GLOB_NOMATCH) {
1875: debug("%.200s line %d: include %s matched no "
1876: "files",filename, linenum, arg2);
1.269 dtucker 1877: free(arg2);
1.252 djm 1878: continue;
1.344 djm 1879: } else if (r != 0) {
1880: error("%.200s line %d: glob failed for %s.",
1.252 djm 1881: filename, linenum, arg2);
1.356 djm 1882: goto out;
1.344 djm 1883: }
1.252 djm 1884: free(arg2);
1885: oactive = *activep;
1.313 deraadt 1886: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1887: debug3("%.200s line %d: Including file %s "
1888: "depth %d%s", filename, linenum,
1889: gl.gl_pathv[i], depth,
1890: oactive ? "" : " (parse only)");
1891: r = read_config_file_depth(gl.gl_pathv[i],
1892: pw, host, original_host, options,
1893: flags | SSHCONF_CHECKPERM |
1894: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1895: activep, want_final_pass, depth + 1);
1.264 djm 1896: if (r != 1 && errno != ENOENT) {
1.344 djm 1897: error("Can't open user config file "
1.263 djm 1898: "%.100s: %.100s", gl.gl_pathv[i],
1899: strerror(errno));
1.344 djm 1900: globfree(&gl);
1.356 djm 1901: goto out;
1.263 djm 1902: }
1.252 djm 1903: /*
1904: * don't let Match in includes clobber the
1905: * containing file's Match state.
1906: */
1907: *activep = oactive;
1908: if (r != 1)
1909: value = -1;
1910: }
1911: globfree(&gl);
1912: }
1913: if (value != 0)
1.356 djm 1914: ret = value;
1.252 djm 1915: break;
1916:
1.190 djm 1917: case oIPQoS:
1.356 djm 1918: arg = argv_next(&ac, &av);
1.344 djm 1919: if ((value = parse_ipqos(arg)) == -1) {
1920: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1921: filename, linenum, arg);
1.356 djm 1922: goto out;
1.344 djm 1923: }
1.356 djm 1924: arg = argv_next(&ac, &av);
1.190 djm 1925: if (arg == NULL)
1926: value2 = value;
1.344 djm 1927: else if ((value2 = parse_ipqos(arg)) == -1) {
1928: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1929: filename, linenum, arg);
1.356 djm 1930: goto out;
1.344 djm 1931: }
1.355 dtucker 1932: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 1933: options->ip_qos_interactive = value;
1934: options->ip_qos_bulk = value2;
1935: }
1936: break;
1937:
1.192 djm 1938: case oRequestTTY:
1939: intptr = &options->request_tty;
1.207 djm 1940: multistate_ptr = multistate_requesttty;
1941: goto parse_multistate;
1.192 djm 1942:
1.359 djm 1943: case oSessionType:
1944: intptr = &options->session_type;
1945: multistate_ptr = multistate_sessiontype;
1946: goto parse_multistate;
1947:
1.360 djm 1948: case oStdinNull:
1949: intptr = &options->stdin_null;
1950: goto parse_flag;
1951:
1.361 djm 1952: case oForkAfterAuthentication:
1953: intptr = &options->fork_after_authentication;
1954: goto parse_flag;
1955:
1.199 djm 1956: case oIgnoreUnknown:
1957: charptr = &options->ignored_unknown;
1958: goto parse_string;
1959:
1.205 djm 1960: case oProxyUseFdpass:
1961: intptr = &options->proxy_use_fdpass;
1962: goto parse_flag;
1963:
1.208 djm 1964: case oCanonicalDomains:
1965: value = options->num_canonical_domains != 0;
1.356 djm 1966: i = 0;
1967: while ((arg = argv_next(&ac, &av)) != NULL) {
1968: if (*arg == '\0') {
1969: error("%s line %d: keyword %s empty argument",
1970: filename, linenum, keyword);
1971: goto out;
1972: }
1973: /* Allow "none" only in first position */
1974: if (strcasecmp(arg, "none") == 0) {
1975: if (i > 0 || ac > 0) {
1976: error("%s line %d: keyword %s \"none\" "
1977: "argument must appear alone.",
1978: filename, linenum, keyword);
1979: goto out;
1980: }
1981: }
1982: i++;
1.280 millert 1983: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 1984: error("%s line %d: %s", filename, linenum,
1.280 millert 1985: errstr);
1.356 djm 1986: goto out;
1.280 millert 1987: }
1.208 djm 1988: if (!*activep || value)
1989: continue;
1.344 djm 1990: if (options->num_canonical_domains >=
1991: MAX_CANON_DOMAINS) {
1992: error("%s line %d: too many hostname suffixes.",
1.208 djm 1993: filename, linenum);
1.356 djm 1994: goto out;
1.344 djm 1995: }
1.208 djm 1996: options->canonical_domains[
1997: options->num_canonical_domains++] = xstrdup(arg);
1998: }
1999: break;
2000:
1.209 djm 2001: case oCanonicalizePermittedCNAMEs:
1.208 djm 2002: value = options->num_permitted_cnames != 0;
1.362 djm 2003: i = 0;
1.356 djm 2004: while ((arg = argv_next(&ac, &av)) != NULL) {
1.362 djm 2005: /*
2006: * Either 'none' (only in first position), '*' for
2007: * everything or 'list:list'
2008: */
2009: if (strcasecmp(arg, "none") == 0) {
2010: if (i > 0 || ac > 0) {
2011: error("%s line %d: keyword %s \"none\" "
2012: "argument must appear alone.",
2013: filename, linenum, keyword);
2014: goto out;
2015: }
2016: arg2 = "";
2017: } else if (strcmp(arg, "*") == 0) {
1.208 djm 2018: arg2 = arg;
1.362 djm 2019: } else {
1.208 djm 2020: lowercase(arg);
2021: if ((arg2 = strchr(arg, ':')) == NULL ||
2022: arg2[1] == '\0') {
1.344 djm 2023: error("%s line %d: "
1.208 djm 2024: "Invalid permitted CNAME \"%s\"",
2025: filename, linenum, arg);
1.356 djm 2026: goto out;
1.208 djm 2027: }
2028: *arg2 = '\0';
2029: arg2++;
2030: }
1.362 djm 2031: i++;
1.208 djm 2032: if (!*activep || value)
2033: continue;
1.344 djm 2034: if (options->num_permitted_cnames >=
2035: MAX_CANON_DOMAINS) {
2036: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 2037: filename, linenum);
1.356 djm 2038: goto out;
1.344 djm 2039: }
1.208 djm 2040: cname = options->permitted_cnames +
2041: options->num_permitted_cnames++;
2042: cname->source_list = xstrdup(arg);
2043: cname->target_list = xstrdup(arg2);
2044: }
2045: break;
2046:
1.209 djm 2047: case oCanonicalizeHostname:
2048: intptr = &options->canonicalize_hostname;
2049: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2050: goto parse_multistate;
2051:
1.209 djm 2052: case oCanonicalizeMaxDots:
2053: intptr = &options->canonicalize_max_dots;
1.208 djm 2054: goto parse_int;
2055:
1.209 djm 2056: case oCanonicalizeFallbackLocal:
2057: intptr = &options->canonicalize_fallback_local;
1.208 djm 2058: goto parse_flag;
2059:
1.220 millert 2060: case oStreamLocalBindMask:
1.356 djm 2061: arg = argv_next(&ac, &av);
1.344 djm 2062: if (!arg || *arg == '\0') {
2063: error("%.200s line %d: Missing StreamLocalBindMask "
2064: "argument.", filename, linenum);
1.356 djm 2065: goto out;
1.344 djm 2066: }
1.220 millert 2067: /* Parse mode in octal format */
2068: value = strtol(arg, &endofnumber, 8);
1.344 djm 2069: if (arg == endofnumber || value < 0 || value > 0777) {
2070: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2071: goto out;
1.344 djm 2072: }
1.220 millert 2073: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2074: break;
2075:
2076: case oStreamLocalBindUnlink:
2077: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2078: goto parse_flag;
2079:
1.223 djm 2080: case oRevokedHostKeys:
2081: charptr = &options->revoked_host_keys;
2082: goto parse_string;
2083:
1.224 djm 2084: case oFingerprintHash:
1.225 djm 2085: intptr = &options->fingerprint_hash;
1.356 djm 2086: arg = argv_next(&ac, &av);
1.344 djm 2087: if (!arg || *arg == '\0') {
2088: error("%.200s line %d: Missing argument.",
1.224 djm 2089: filename, linenum);
1.356 djm 2090: goto out;
1.344 djm 2091: }
2092: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2093: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2094: filename, linenum, arg);
1.356 djm 2095: goto out;
1.344 djm 2096: }
1.225 djm 2097: if (*activep && *intptr == -1)
2098: *intptr = value;
1.224 djm 2099: break;
2100:
1.229 djm 2101: case oUpdateHostkeys:
2102: intptr = &options->update_hostkeys;
1.232 djm 2103: multistate_ptr = multistate_yesnoask;
2104: goto parse_multistate;
1.229 djm 2105:
1.350 dtucker 2106: case oHostbasedAcceptedAlgorithms:
2107: charptr = &options->hostbased_accepted_algos;
1.377 ! djm 2108: ca_only = 0;
1.349 dtucker 2109: goto parse_pubkey_algos;
1.238 markus 2110:
1.349 dtucker 2111: case oPubkeyAcceptedAlgorithms:
2112: charptr = &options->pubkey_accepted_algos;
1.377 ! djm 2113: ca_only = 0;
1.349 dtucker 2114: goto parse_pubkey_algos;
1.230 djm 2115:
1.246 jcs 2116: case oAddKeysToAgent:
1.356 djm 2117: arg = argv_next(&ac, &av);
2118: arg2 = argv_next(&ac, &av);
1.334 djm 2119: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2120: multistate_yesnoaskconfirm);
1.334 djm 2121: value2 = 0; /* unlimited lifespan by default */
2122: if (value == 3 && arg2 != NULL) {
2123: /* allow "AddKeysToAgent confirm 5m" */
1.375 dtucker 2124: if ((value2 = convtime(arg2)) == -1) {
1.344 djm 2125: error("%s line %d: invalid time value.",
1.334 djm 2126: filename, linenum);
1.356 djm 2127: goto out;
1.344 djm 2128: }
1.334 djm 2129: } else if (value == -1 && arg2 == NULL) {
1.375 dtucker 2130: if ((value2 = convtime(arg)) == -1) {
1.344 djm 2131: error("%s line %d: unsupported option",
1.334 djm 2132: filename, linenum);
1.356 djm 2133: goto out;
1.344 djm 2134: }
1.334 djm 2135: value = 1; /* yes */
2136: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2137: error("%s line %d: unsupported option",
1.334 djm 2138: filename, linenum);
1.356 djm 2139: goto out;
1.334 djm 2140: }
2141: if (*activep && options->add_keys_to_agent == -1) {
2142: options->add_keys_to_agent = value;
2143: options->add_keys_to_agent_lifespan = value2;
2144: }
2145: break;
1.246 jcs 2146:
1.253 markus 2147: case oIdentityAgent:
2148: charptr = &options->identity_agent;
1.356 djm 2149: arg = argv_next(&ac, &av);
1.344 djm 2150: if (!arg || *arg == '\0') {
2151: error("%.200s line %d: Missing argument.",
1.299 djm 2152: filename, linenum);
1.356 djm 2153: goto out;
1.344 djm 2154: }
1.319 djm 2155: parse_agent_path:
1.299 djm 2156: /* Extra validation if the string represents an env var. */
1.344 djm 2157: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2158: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2159: "%s.", filename, linenum, arg);
1.356 djm 2160: goto out;
1.344 djm 2161: }
1.331 dtucker 2162: free(arg2);
2163: /* check for legacy environment format */
1.344 djm 2164: if (arg[0] == '$' && arg[1] != '{' &&
2165: !valid_env_name(arg + 1)) {
2166: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2167: filename, linenum, arg);
1.356 djm 2168: goto out;
1.299 djm 2169: }
2170: if (*activep && *charptr == NULL)
2171: *charptr = xstrdup(arg);
2172: break;
1.253 markus 2173:
1.370 djm 2174: case oEnableEscapeCommandline:
2175: intptr = &options->enable_escape_commandline;
2176: goto parse_flag;
2177:
1.369 djm 2178: case oRequiredRSASize:
2179: intptr = &options->required_rsa_size;
2180: goto parse_int;
2181:
1.96 markus 2182: case oDeprecated:
1.98 markus 2183: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2184: filename, linenum, keyword);
1.356 djm 2185: argv_consume(&ac);
2186: break;
1.96 markus 2187:
1.110 jakob 2188: case oUnsupported:
2189: error("%s line %d: Unsupported option \"%s\"",
2190: filename, linenum, keyword);
1.356 djm 2191: argv_consume(&ac);
2192: break;
1.110 jakob 2193:
1.17 markus 2194: default:
1.344 djm 2195: error("%s line %d: Unimplemented opcode %d",
2196: filename, linenum, opcode);
1.356 djm 2197: goto out;
1.17 markus 2198: }
2199:
2200: /* Check that there is no garbage at end of line. */
1.356 djm 2201: if (ac > 0) {
2202: error("%.200s line %d: keyword %s extra arguments "
2203: "at end of line", filename, linenum, keyword);
2204: goto out;
1.39 ho 2205: }
1.356 djm 2206:
2207: /* success */
2208: ret = 0;
2209: out:
2210: argv_free(oav, oac);
2211: return ret;
1.1 deraadt 2212: }
2213:
1.19 markus 2214: /*
2215: * Reads the config file and modifies the options accordingly. Options
2216: * should already be initialized before this call. This never returns if
1.89 stevesk 2217: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2218: */
1.89 stevesk 2219: int
1.206 djm 2220: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2221: const char *original_host, Options *options, int flags,
2222: int *want_final_pass)
1.1 deraadt 2223: {
1.252 djm 2224: int active = 1;
2225:
2226: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2227: options, flags, &active, want_final_pass, 0);
1.252 djm 2228: }
2229:
2230: #define READCONF_MAX_DEPTH 16
2231: static int
2232: read_config_file_depth(const char *filename, struct passwd *pw,
2233: const char *host, const char *original_host, Options *options,
1.302 djm 2234: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2235: {
1.17 markus 2236: FILE *f;
1.356 djm 2237: char *line = NULL;
1.289 markus 2238: size_t linesize = 0;
1.252 djm 2239: int linenum;
1.17 markus 2240: int bad_options = 0;
2241:
1.252 djm 2242: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2243: fatal("Too many recursive configuration includes");
2244:
1.129 djm 2245: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2246: return 0;
1.129 djm 2247:
1.196 dtucker 2248: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2249: struct stat sb;
1.134 deraadt 2250:
1.131 dtucker 2251: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2252: fatal("fstat %s: %s", filename, strerror(errno));
2253: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2254: (sb.st_mode & 022) != 0))
1.129 djm 2255: fatal("Bad owner or permissions on %s", filename);
2256: }
1.17 markus 2257:
2258: debug("Reading configuration data %.200s", filename);
2259:
1.19 markus 2260: /*
2261: * Mark that we are now processing the options. This flag is turned
2262: * on/off by Host specifications.
2263: */
1.17 markus 2264: linenum = 0;
1.289 markus 2265: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2266: /* Update line number counter. */
2267: linenum++;
1.343 dtucker 2268: /*
2269: * Trim out comments and strip whitespace.
2270: * NB - preserve newlines, they are needed to reproduce
2271: * line numbers later for error messages.
2272: */
1.252 djm 2273: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2274: line, filename, linenum, activep, flags, want_final_pass,
2275: depth) != 0)
1.17 markus 2276: bad_options++;
2277: }
1.289 markus 2278: free(line);
1.17 markus 2279: fclose(f);
2280: if (bad_options > 0)
1.64 millert 2281: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2282: filename, bad_options);
1.89 stevesk 2283: return 1;
1.1 deraadt 2284: }
2285:
1.218 djm 2286: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2287: int
2288: option_clear_or_none(const char *o)
2289: {
2290: return o == NULL || strcasecmp(o, "none") == 0;
2291: }
2292:
1.19 markus 2293: /*
1.362 djm 2294: * Returns 1 if CanonicalizePermittedCNAMEs have been specified, 0 otherwise.
2295: * Allowed to be called on non-final configuration.
2296: */
2297: int
2298: config_has_permitted_cnames(Options *options)
2299: {
2300: if (options->num_permitted_cnames == 1 &&
2301: strcasecmp(options->permitted_cnames[0].source_list, "none") == 0 &&
2302: strcmp(options->permitted_cnames[0].target_list, "") == 0)
2303: return 0;
2304: return options->num_permitted_cnames > 0;
2305: }
2306:
2307: /*
1.19 markus 2308: * Initializes options to special values that indicate that they have not yet
2309: * been set. Read_config_file will only set options with this value. Options
2310: * are processed in the following order: command line, user config file,
2311: * system config file. Last, fill_default_options is called.
2312: */
1.1 deraadt 2313:
1.26 markus 2314: void
1.17 markus 2315: initialize_options(Options * options)
1.1 deraadt 2316: {
1.17 markus 2317: memset(options, 'X', sizeof(*options));
1.372 dtucker 2318: options->host_arg = NULL;
1.17 markus 2319: options->forward_agent = -1;
1.319 djm 2320: options->forward_agent_sock_path = NULL;
1.17 markus 2321: options->forward_x11 = -1;
1.123 markus 2322: options->forward_x11_trusted = -1;
1.186 djm 2323: options->forward_x11_timeout = -1;
1.255 dtucker 2324: options->stdio_forward_host = NULL;
2325: options->stdio_forward_port = 0;
1.256 dtucker 2326: options->clear_forwardings = -1;
1.153 markus 2327: options->exit_on_forward_failure = -1;
1.34 markus 2328: options->xauth_location = NULL;
1.220 millert 2329: options->fwd_opts.gateway_ports = -1;
2330: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2331: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2332: options->pubkey_authentication = -1;
1.118 markus 2333: options->gss_authentication = -1;
2334: options->gss_deleg_creds = -1;
1.17 markus 2335: options->password_authentication = -1;
1.48 markus 2336: options->kbd_interactive_authentication = -1;
2337: options->kbd_interactive_devices = NULL;
1.72 markus 2338: options->hostbased_authentication = -1;
1.17 markus 2339: options->batch_mode = -1;
2340: options->check_host_ip = -1;
2341: options->strict_host_key_checking = -1;
2342: options->compression = -1;
1.126 markus 2343: options->tcp_keep_alive = -1;
1.17 markus 2344: options->port = -1;
1.114 djm 2345: options->address_family = -1;
1.17 markus 2346: options->connection_attempts = -1;
1.111 djm 2347: options->connection_timeout = -1;
1.17 markus 2348: options->number_of_password_prompts = -1;
1.25 markus 2349: options->ciphers = NULL;
1.62 markus 2350: options->macs = NULL;
1.189 djm 2351: options->kex_algorithms = NULL;
1.76 markus 2352: options->hostkeyalgorithms = NULL;
1.298 djm 2353: options->ca_sign_algorithms = NULL;
1.17 markus 2354: options->num_identity_files = 0;
1.344 djm 2355: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2356: options->num_certificate_files = 0;
1.344 djm 2357: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2358: options->hostname = NULL;
1.52 markus 2359: options->host_key_alias = NULL;
1.17 markus 2360: options->proxy_command = NULL;
1.257 djm 2361: options->jump_user = NULL;
2362: options->jump_host = NULL;
2363: options->jump_port = -1;
2364: options->jump_extra = NULL;
1.17 markus 2365: options->user = NULL;
2366: options->escape_char = -1;
1.193 djm 2367: options->num_system_hostfiles = 0;
2368: options->num_user_hostfiles = 0;
1.185 djm 2369: options->local_forwards = NULL;
1.17 markus 2370: options->num_local_forwards = 0;
1.185 djm 2371: options->remote_forwards = NULL;
1.17 markus 2372: options->num_remote_forwards = 0;
1.351 markus 2373: options->permitted_remote_opens = NULL;
2374: options->num_permitted_remote_opens = 0;
1.271 dtucker 2375: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2376: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2377: options->num_log_verbose = 0;
2378: options->log_verbose = NULL;
1.67 markus 2379: options->preferred_authentications = NULL;
1.77 markus 2380: options->bind_address = NULL;
1.282 djm 2381: options->bind_interface = NULL;
1.183 markus 2382: options->pkcs11_provider = NULL;
1.310 djm 2383: options->sk_provider = NULL;
1.101 markus 2384: options->enable_ssh_keysign = - 1;
1.91 markus 2385: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2386: options->identities_only = - 1;
1.105 markus 2387: options->rekey_limit = - 1;
1.198 dtucker 2388: options->rekey_interval = -1;
1.107 jakob 2389: options->verify_host_key_dns = -1;
1.127 markus 2390: options->server_alive_interval = -1;
2391: options->server_alive_count_max = -1;
1.290 djm 2392: options->send_env = NULL;
1.130 djm 2393: options->num_send_env = 0;
1.290 djm 2394: options->setenv = NULL;
2395: options->num_setenv = 0;
1.132 djm 2396: options->control_path = NULL;
2397: options->control_master = -1;
1.187 djm 2398: options->control_persist = -1;
2399: options->control_persist_timeout = 0;
1.136 djm 2400: options->hash_known_hosts = -1;
1.144 reyk 2401: options->tun_open = -1;
2402: options->tun_local = -1;
2403: options->tun_remote = -1;
2404: options->local_command = NULL;
2405: options->permit_local_command = -1;
1.277 bluhm 2406: options->remote_command = NULL;
1.246 jcs 2407: options->add_keys_to_agent = -1;
1.334 djm 2408: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2409: options->identity_agent = NULL;
1.167 grunk 2410: options->visual_host_key = -1;
1.190 djm 2411: options->ip_qos_interactive = -1;
2412: options->ip_qos_bulk = -1;
1.192 djm 2413: options->request_tty = -1;
1.359 djm 2414: options->session_type = -1;
1.360 djm 2415: options->stdin_null = -1;
1.361 djm 2416: options->fork_after_authentication = -1;
1.205 djm 2417: options->proxy_use_fdpass = -1;
1.199 djm 2418: options->ignored_unknown = NULL;
1.208 djm 2419: options->num_canonical_domains = 0;
2420: options->num_permitted_cnames = 0;
1.209 djm 2421: options->canonicalize_max_dots = -1;
2422: options->canonicalize_fallback_local = -1;
2423: options->canonicalize_hostname = -1;
1.223 djm 2424: options->revoked_host_keys = NULL;
1.224 djm 2425: options->fingerprint_hash = -1;
1.229 djm 2426: options->update_hostkeys = -1;
1.350 dtucker 2427: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2428: options->pubkey_accepted_algos = NULL;
1.346 djm 2429: options->known_hosts_command = NULL;
1.369 djm 2430: options->required_rsa_size = -1;
1.370 djm 2431: options->enable_escape_commandline = -1;
1.1 deraadt 2432: }
2433:
1.19 markus 2434: /*
1.218 djm 2435: * A petite version of fill_default_options() that just fills the options
2436: * needed for hostname canonicalization to proceed.
2437: */
2438: void
2439: fill_default_options_for_canonicalization(Options *options)
2440: {
2441: if (options->canonicalize_max_dots == -1)
2442: options->canonicalize_max_dots = 1;
2443: if (options->canonicalize_fallback_local == -1)
2444: options->canonicalize_fallback_local = 1;
2445: if (options->canonicalize_hostname == -1)
2446: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2447: }
2448:
2449: /*
1.19 markus 2450: * Called after processing other sources of option data, this fills those
2451: * options for which no value has been specified with their default values.
2452: */
1.344 djm 2453: int
1.17 markus 2454: fill_default_options(Options * options)
1.1 deraadt 2455: {
1.298 djm 2456: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2457: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2458: int ret = 0, r;
1.292 djm 2459:
1.17 markus 2460: if (options->forward_agent == -1)
1.33 markus 2461: options->forward_agent = 0;
1.17 markus 2462: if (options->forward_x11 == -1)
1.23 markus 2463: options->forward_x11 = 0;
1.123 markus 2464: if (options->forward_x11_trusted == -1)
2465: options->forward_x11_trusted = 0;
1.186 djm 2466: if (options->forward_x11_timeout == -1)
2467: options->forward_x11_timeout = 1200;
1.256 dtucker 2468: /*
2469: * stdio forwarding (-W) changes the default for these but we defer
2470: * setting the values so they can be overridden.
2471: */
1.153 markus 2472: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2473: options->exit_on_forward_failure =
2474: options->stdio_forward_host != NULL ? 1 : 0;
2475: if (options->clear_forwardings == -1)
2476: options->clear_forwardings =
2477: options->stdio_forward_host != NULL ? 1 : 0;
2478: if (options->clear_forwardings == 1)
2479: clear_forwardings(options);
2480:
1.34 markus 2481: if (options->xauth_location == NULL)
1.344 djm 2482: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2483: if (options->fwd_opts.gateway_ports == -1)
2484: options->fwd_opts.gateway_ports = 0;
2485: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2486: options->fwd_opts.streamlocal_bind_mask = 0177;
2487: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2488: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2489: if (options->pubkey_authentication == -1)
1.364 djm 2490: options->pubkey_authentication = SSH_PUBKEY_AUTH_ALL;
1.118 markus 2491: if (options->gss_authentication == -1)
1.122 markus 2492: options->gss_authentication = 0;
1.118 markus 2493: if (options->gss_deleg_creds == -1)
2494: options->gss_deleg_creds = 0;
1.17 markus 2495: if (options->password_authentication == -1)
2496: options->password_authentication = 1;
1.48 markus 2497: if (options->kbd_interactive_authentication == -1)
1.59 markus 2498: options->kbd_interactive_authentication = 1;
1.72 markus 2499: if (options->hostbased_authentication == -1)
2500: options->hostbased_authentication = 0;
1.17 markus 2501: if (options->batch_mode == -1)
2502: options->batch_mode = 0;
2503: if (options->check_host_ip == -1)
1.348 djm 2504: options->check_host_ip = 0;
1.17 markus 2505: if (options->strict_host_key_checking == -1)
1.278 djm 2506: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2507: if (options->compression == -1)
2508: options->compression = 0;
1.126 markus 2509: if (options->tcp_keep_alive == -1)
2510: options->tcp_keep_alive = 1;
1.17 markus 2511: if (options->port == -1)
2512: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2513: if (options->address_family == -1)
2514: options->address_family = AF_UNSPEC;
1.17 markus 2515: if (options->connection_attempts == -1)
1.84 markus 2516: options->connection_attempts = 1;
1.17 markus 2517: if (options->number_of_password_prompts == -1)
2518: options->number_of_password_prompts = 3;
1.76 markus 2519: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2520: if (options->add_keys_to_agent == -1) {
1.246 jcs 2521: options->add_keys_to_agent = 0;
1.334 djm 2522: options->add_keys_to_agent_lifespan = 0;
2523: }
1.17 markus 2524: if (options->num_identity_files == 0) {
1.273 djm 2525: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2526: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2527: add_identity_file(options, "~/",
1.310 djm 2528: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2529: add_identity_file(options, "~/",
1.273 djm 2530: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2531: add_identity_file(options, "~/",
2532: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2533: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.365 dtucker 2534: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
1.27 markus 2535: }
1.17 markus 2536: if (options->escape_char == -1)
2537: options->escape_char = '~';
1.193 djm 2538: if (options->num_system_hostfiles == 0) {
2539: options->system_hostfiles[options->num_system_hostfiles++] =
2540: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2541: options->system_hostfiles[options->num_system_hostfiles++] =
2542: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2543: }
1.336 djm 2544: if (options->update_hostkeys == -1) {
1.338 djm 2545: if (options->verify_host_key_dns <= 0 &&
2546: (options->num_user_hostfiles == 0 ||
1.336 djm 2547: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2548: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2549: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2550: else
1.325 djm 2551: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2552: }
1.193 djm 2553: if (options->num_user_hostfiles == 0) {
2554: options->user_hostfiles[options->num_user_hostfiles++] =
2555: xstrdup(_PATH_SSH_USER_HOSTFILE);
2556: options->user_hostfiles[options->num_user_hostfiles++] =
2557: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2558: }
1.95 markus 2559: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2560: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2561: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2562: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2563: if (options->no_host_authentication_for_localhost == - 1)
2564: options->no_host_authentication_for_localhost = 0;
1.128 markus 2565: if (options->identities_only == -1)
2566: options->identities_only = 0;
1.101 markus 2567: if (options->enable_ssh_keysign == -1)
2568: options->enable_ssh_keysign = 0;
1.105 markus 2569: if (options->rekey_limit == -1)
2570: options->rekey_limit = 0;
1.198 dtucker 2571: if (options->rekey_interval == -1)
2572: options->rekey_interval = 0;
1.107 jakob 2573: if (options->verify_host_key_dns == -1)
2574: options->verify_host_key_dns = 0;
1.127 markus 2575: if (options->server_alive_interval == -1)
2576: options->server_alive_interval = 0;
2577: if (options->server_alive_count_max == -1)
2578: options->server_alive_count_max = 3;
1.132 djm 2579: if (options->control_master == -1)
2580: options->control_master = 0;
1.187 djm 2581: if (options->control_persist == -1) {
2582: options->control_persist = 0;
2583: options->control_persist_timeout = 0;
2584: }
1.136 djm 2585: if (options->hash_known_hosts == -1)
2586: options->hash_known_hosts = 0;
1.144 reyk 2587: if (options->tun_open == -1)
1.145 reyk 2588: options->tun_open = SSH_TUNMODE_NO;
2589: if (options->tun_local == -1)
2590: options->tun_local = SSH_TUNID_ANY;
2591: if (options->tun_remote == -1)
2592: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2593: if (options->permit_local_command == -1)
2594: options->permit_local_command = 0;
1.167 grunk 2595: if (options->visual_host_key == -1)
2596: options->visual_host_key = 0;
1.190 djm 2597: if (options->ip_qos_interactive == -1)
1.284 job 2598: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2599: if (options->ip_qos_bulk == -1)
1.284 job 2600: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2601: if (options->request_tty == -1)
2602: options->request_tty = REQUEST_TTY_AUTO;
1.359 djm 2603: if (options->session_type == -1)
2604: options->session_type = SESSION_TYPE_DEFAULT;
1.360 djm 2605: if (options->stdin_null == -1)
2606: options->stdin_null = 0;
1.361 djm 2607: if (options->fork_after_authentication == -1)
2608: options->fork_after_authentication = 0;
1.205 djm 2609: if (options->proxy_use_fdpass == -1)
2610: options->proxy_use_fdpass = 0;
1.209 djm 2611: if (options->canonicalize_max_dots == -1)
2612: options->canonicalize_max_dots = 1;
2613: if (options->canonicalize_fallback_local == -1)
2614: options->canonicalize_fallback_local = 1;
2615: if (options->canonicalize_hostname == -1)
2616: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2617: if (options->fingerprint_hash == -1)
2618: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2619: if (options->sk_provider == NULL)
1.314 djm 2620: options->sk_provider = xstrdup("internal");
1.369 djm 2621: if (options->required_rsa_size == -1)
2622: options->required_rsa_size = SSH_RSA_MINIMUM_MODULUS_SIZE;
1.370 djm 2623: if (options->enable_escape_commandline == -1)
2624: options->enable_escape_commandline = 0;
1.292 djm 2625:
2626: /* Expand KEX name lists */
2627: all_cipher = cipher_alg_list(',', 0);
2628: all_mac = mac_alg_list(',');
2629: all_kex = kex_alg_list(',');
2630: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2631: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2632: /* remove unsupported algos from default lists */
1.332 djm 2633: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2634: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2635: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2636: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2637: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2638: #define ASSEMBLE(what, defaults, all) \
2639: do { \
2640: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2641: defaults, all)) != 0) { \
2642: error_fr(r, "%s", #what); \
2643: goto fail; \
2644: } \
1.297 djm 2645: } while (0)
1.320 dtucker 2646: ASSEMBLE(ciphers, def_cipher, all_cipher);
2647: ASSEMBLE(macs, def_mac, all_mac);
2648: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2649: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2650: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2651: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2652: #undef ASSEMBLE
1.224 djm 2653:
1.207 djm 2654: #define CLEAR_ON_NONE(v) \
2655: do { \
1.218 djm 2656: if (option_clear_or_none(v)) { \
1.207 djm 2657: free(v); \
2658: v = NULL; \
2659: } \
2660: } while(0)
2661: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2662: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2663: CLEAR_ON_NONE(options->proxy_command);
2664: CLEAR_ON_NONE(options->control_path);
1.223 djm 2665: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2666: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2667: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2668: CLEAR_ON_NONE(options->known_hosts_command);
1.287 djm 2669: if (options->jump_host != NULL &&
2670: strcmp(options->jump_host, "none") == 0 &&
2671: options->jump_port == 0 && options->jump_user == NULL) {
2672: free(options->jump_host);
2673: options->jump_host = NULL;
2674: }
1.362 djm 2675: if (options->num_permitted_cnames == 1 &&
2676: !config_has_permitted_cnames(options)) {
2677: /* clean up CanonicalizePermittedCNAMEs=none */
2678: free(options->permitted_cnames[0].source_list);
2679: free(options->permitted_cnames[0].target_list);
2680: memset(options->permitted_cnames, '\0',
2681: sizeof(*options->permitted_cnames));
2682: options->num_permitted_cnames = 0;
2683: }
1.254 markus 2684: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2685: /* options->user will be set in the main program if appropriate */
2686: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2687: /* options->host_key_alias should not be set by default */
1.67 markus 2688: /* options->preferred_authentications will be set in ssh */
1.344 djm 2689:
2690: /* success */
2691: ret = 0;
2692: fail:
2693: free(all_cipher);
2694: free(all_mac);
2695: free(all_kex);
2696: free(all_key);
2697: free(all_sig);
2698: free(def_cipher);
2699: free(def_mac);
2700: free(def_kex);
2701: free(def_key);
2702: free(def_sig);
2703: return ret;
2704: }
2705:
2706: void
2707: free_options(Options *o)
2708: {
2709: int i;
2710:
2711: if (o == NULL)
2712: return;
2713:
2714: #define FREE_ARRAY(type, n, a) \
2715: do { \
2716: type _i; \
2717: for (_i = 0; _i < (n); _i++) \
2718: free((a)[_i]); \
2719: } while (0)
2720:
2721: free(o->forward_agent_sock_path);
2722: free(o->xauth_location);
2723: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2724: free(o->log_verbose);
2725: free(o->ciphers);
2726: free(o->macs);
2727: free(o->hostkeyalgorithms);
2728: free(o->kex_algorithms);
2729: free(o->ca_sign_algorithms);
2730: free(o->hostname);
2731: free(o->host_key_alias);
2732: free(o->proxy_command);
2733: free(o->user);
2734: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2735: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2736: free(o->preferred_authentications);
2737: free(o->bind_address);
2738: free(o->bind_interface);
2739: free(o->pkcs11_provider);
2740: free(o->sk_provider);
2741: for (i = 0; i < o->num_identity_files; i++) {
2742: free(o->identity_files[i]);
2743: sshkey_free(o->identity_keys[i]);
2744: }
2745: for (i = 0; i < o->num_certificate_files; i++) {
2746: free(o->certificate_files[i]);
2747: sshkey_free(o->certificates[i]);
2748: }
2749: free(o->identity_agent);
2750: for (i = 0; i < o->num_local_forwards; i++) {
2751: free(o->local_forwards[i].listen_host);
2752: free(o->local_forwards[i].listen_path);
2753: free(o->local_forwards[i].connect_host);
2754: free(o->local_forwards[i].connect_path);
2755: }
2756: free(o->local_forwards);
2757: for (i = 0; i < o->num_remote_forwards; i++) {
2758: free(o->remote_forwards[i].listen_host);
2759: free(o->remote_forwards[i].listen_path);
2760: free(o->remote_forwards[i].connect_host);
2761: free(o->remote_forwards[i].connect_path);
2762: }
2763: free(o->remote_forwards);
2764: free(o->stdio_forward_host);
1.368 djm 2765: FREE_ARRAY(u_int, o->num_send_env, o->send_env);
1.344 djm 2766: free(o->send_env);
1.368 djm 2767: FREE_ARRAY(u_int, o->num_setenv, o->setenv);
1.344 djm 2768: free(o->setenv);
2769: free(o->control_path);
2770: free(o->local_command);
2771: free(o->remote_command);
2772: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2773: for (i = 0; i < o->num_permitted_cnames; i++) {
2774: free(o->permitted_cnames[i].source_list);
2775: free(o->permitted_cnames[i].target_list);
2776: }
2777: free(o->revoked_host_keys);
1.350 dtucker 2778: free(o->hostbased_accepted_algos);
1.349 dtucker 2779: free(o->pubkey_accepted_algos);
1.344 djm 2780: free(o->jump_user);
2781: free(o->jump_host);
2782: free(o->jump_extra);
2783: free(o->ignored_unknown);
2784: explicit_bzero(o, sizeof(*o));
2785: #undef FREE_ARRAY
1.135 djm 2786: }
2787:
1.220 millert 2788: struct fwdarg {
2789: char *arg;
2790: int ispath;
2791: };
2792:
2793: /*
2794: * parse_fwd_field
2795: * parses the next field in a port forwarding specification.
2796: * sets fwd to the parsed field and advances p past the colon
2797: * or sets it to NULL at end of string.
2798: * returns 0 on success, else non-zero.
2799: */
2800: static int
2801: parse_fwd_field(char **p, struct fwdarg *fwd)
2802: {
2803: char *ep, *cp = *p;
2804: int ispath = 0;
2805:
2806: if (*cp == '\0') {
2807: *p = NULL;
2808: return -1; /* end of string */
2809: }
2810:
2811: /*
2812: * A field escaped with square brackets is used literally.
2813: * XXX - allow ']' to be escaped via backslash?
2814: */
2815: if (*cp == '[') {
2816: /* find matching ']' */
2817: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2818: if (*ep == '/')
2819: ispath = 1;
2820: }
2821: /* no matching ']' or not at end of field. */
2822: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2823: return -1;
2824: /* NUL terminate the field and advance p past the colon */
2825: *ep++ = '\0';
2826: if (*ep != '\0')
2827: *ep++ = '\0';
2828: fwd->arg = cp + 1;
2829: fwd->ispath = ispath;
2830: *p = ep;
2831: return 0;
2832: }
2833:
2834: for (cp = *p; *cp != '\0'; cp++) {
2835: switch (*cp) {
2836: case '\\':
2837: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2838: if (*cp == '\0')
2839: return -1;
1.220 millert 2840: break;
2841: case '/':
2842: ispath = 1;
2843: break;
2844: case ':':
2845: *cp++ = '\0';
2846: goto done;
2847: }
2848: }
2849: done:
2850: fwd->arg = *p;
2851: fwd->ispath = ispath;
2852: *p = cp;
2853: return 0;
2854: }
2855:
1.135 djm 2856: /*
2857: * parse_forward
2858: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2859: * dynamicfwd == 0
1.220 millert 2860: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2861: * listenpath:connectpath
1.168 stevesk 2862: * dynamicfwd == 1
2863: * [listenhost:]listenport
1.135 djm 2864: * returns number of arguments parsed or zero on error
2865: */
2866: int
1.220 millert 2867: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2868: {
1.220 millert 2869: struct fwdarg fwdargs[4];
2870: char *p, *cp;
1.331 dtucker 2871: int i, err;
1.135 djm 2872:
1.220 millert 2873: memset(fwd, 0, sizeof(*fwd));
2874: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2875:
1.331 dtucker 2876: /*
2877: * We expand environment variables before checking if we think they're
2878: * paths so that if ${VAR} expands to a fully qualified path it is
2879: * treated as a path.
2880: */
2881: cp = p = dollar_expand(&err, fwdspec);
2882: if (p == NULL || err)
2883: return 0;
1.135 djm 2884:
2885: /* skip leading spaces */
1.214 deraadt 2886: while (isspace((u_char)*cp))
1.135 djm 2887: cp++;
2888:
1.220 millert 2889: for (i = 0; i < 4; ++i) {
2890: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2891: break;
1.220 millert 2892: }
1.135 djm 2893:
1.170 stevesk 2894: /* Check for trailing garbage */
1.220 millert 2895: if (cp != NULL && *cp != '\0') {
1.135 djm 2896: i = 0; /* failure */
1.220 millert 2897: }
1.135 djm 2898:
2899: switch (i) {
1.168 stevesk 2900: case 1:
1.220 millert 2901: if (fwdargs[0].ispath) {
2902: fwd->listen_path = xstrdup(fwdargs[0].arg);
2903: fwd->listen_port = PORT_STREAMLOCAL;
2904: } else {
2905: fwd->listen_host = NULL;
2906: fwd->listen_port = a2port(fwdargs[0].arg);
2907: }
1.168 stevesk 2908: fwd->connect_host = xstrdup("socks");
2909: break;
2910:
2911: case 2:
1.220 millert 2912: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2913: fwd->listen_path = xstrdup(fwdargs[0].arg);
2914: fwd->listen_port = PORT_STREAMLOCAL;
2915: fwd->connect_path = xstrdup(fwdargs[1].arg);
2916: fwd->connect_port = PORT_STREAMLOCAL;
2917: } else if (fwdargs[1].ispath) {
2918: fwd->listen_host = NULL;
2919: fwd->listen_port = a2port(fwdargs[0].arg);
2920: fwd->connect_path = xstrdup(fwdargs[1].arg);
2921: fwd->connect_port = PORT_STREAMLOCAL;
2922: } else {
2923: fwd->listen_host = xstrdup(fwdargs[0].arg);
2924: fwd->listen_port = a2port(fwdargs[1].arg);
2925: fwd->connect_host = xstrdup("socks");
2926: }
1.168 stevesk 2927: break;
2928:
1.135 djm 2929: case 3:
1.220 millert 2930: if (fwdargs[0].ispath) {
2931: fwd->listen_path = xstrdup(fwdargs[0].arg);
2932: fwd->listen_port = PORT_STREAMLOCAL;
2933: fwd->connect_host = xstrdup(fwdargs[1].arg);
2934: fwd->connect_port = a2port(fwdargs[2].arg);
2935: } else if (fwdargs[2].ispath) {
2936: fwd->listen_host = xstrdup(fwdargs[0].arg);
2937: fwd->listen_port = a2port(fwdargs[1].arg);
2938: fwd->connect_path = xstrdup(fwdargs[2].arg);
2939: fwd->connect_port = PORT_STREAMLOCAL;
2940: } else {
2941: fwd->listen_host = NULL;
2942: fwd->listen_port = a2port(fwdargs[0].arg);
2943: fwd->connect_host = xstrdup(fwdargs[1].arg);
2944: fwd->connect_port = a2port(fwdargs[2].arg);
2945: }
1.135 djm 2946: break;
2947:
2948: case 4:
1.220 millert 2949: fwd->listen_host = xstrdup(fwdargs[0].arg);
2950: fwd->listen_port = a2port(fwdargs[1].arg);
2951: fwd->connect_host = xstrdup(fwdargs[2].arg);
2952: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2953: break;
2954: default:
2955: i = 0; /* failure */
2956: }
2957:
1.202 djm 2958: free(p);
1.135 djm 2959:
1.168 stevesk 2960: if (dynamicfwd) {
2961: if (!(i == 1 || i == 2))
2962: goto fail_free;
2963: } else {
1.220 millert 2964: if (!(i == 3 || i == 4)) {
2965: if (fwd->connect_path == NULL &&
2966: fwd->listen_path == NULL)
2967: goto fail_free;
2968: }
2969: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2970: goto fail_free;
2971: }
2972:
1.220 millert 2973: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2974: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2975: goto fail_free;
2976: if (fwd->connect_host != NULL &&
2977: strlen(fwd->connect_host) >= NI_MAXHOST)
2978: goto fail_free;
1.356 djm 2979: /*
2980: * XXX - if connecting to a remote socket, max sun len may not
2981: * match this host
2982: */
1.220 millert 2983: if (fwd->connect_path != NULL &&
2984: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2985: goto fail_free;
1.176 djm 2986: if (fwd->listen_host != NULL &&
2987: strlen(fwd->listen_host) >= NI_MAXHOST)
2988: goto fail_free;
1.220 millert 2989: if (fwd->listen_path != NULL &&
2990: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2991: goto fail_free;
1.135 djm 2992:
2993: return (i);
2994:
2995: fail_free:
1.202 djm 2996: free(fwd->connect_host);
2997: fwd->connect_host = NULL;
1.220 millert 2998: free(fwd->connect_path);
2999: fwd->connect_path = NULL;
1.202 djm 3000: free(fwd->listen_host);
3001: fwd->listen_host = NULL;
1.220 millert 3002: free(fwd->listen_path);
3003: fwd->listen_path = NULL;
1.135 djm 3004: return (0);
1.221 djm 3005: }
3006:
1.257 djm 3007: int
3008: parse_jump(const char *s, Options *o, int active)
3009: {
3010: char *orig, *sdup, *cp;
3011: char *host = NULL, *user = NULL;
1.345 djm 3012: int r, ret = -1, port = -1, first;
1.257 djm 3013:
3014: active &= o->proxy_command == NULL && o->jump_host == NULL;
3015:
3016: orig = sdup = xstrdup(s);
1.356 djm 3017:
3018: /* Remove comment and trailing whitespace */
3019: if ((cp = strchr(orig, '#')) != NULL)
3020: *cp = '\0';
3021: rtrim(orig);
3022:
1.258 naddy 3023: first = active;
1.259 djm 3024: do {
1.287 djm 3025: if (strcasecmp(s, "none") == 0)
3026: break;
1.259 djm 3027: if ((cp = strrchr(sdup, ',')) == NULL)
3028: cp = sdup; /* last */
3029: else
3030: *cp++ = '\0';
3031:
1.258 naddy 3032: if (first) {
1.257 djm 3033: /* First argument and configuration is active */
1.345 djm 3034: r = parse_ssh_uri(cp, &user, &host, &port);
3035: if (r == -1 || (r == 1 &&
3036: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 3037: goto out;
3038: } else {
3039: /* Subsequent argument or inactive configuration */
1.345 djm 3040: r = parse_ssh_uri(cp, NULL, NULL, NULL);
3041: if (r == -1 || (r == 1 &&
3042: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 3043: goto out;
3044: }
1.258 naddy 3045: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 3046: } while (cp != sdup);
1.257 djm 3047: /* success */
1.258 naddy 3048: if (active) {
1.287 djm 3049: if (strcasecmp(s, "none") == 0) {
3050: o->jump_host = xstrdup("none");
3051: o->jump_port = 0;
3052: } else {
3053: o->jump_user = user;
3054: o->jump_host = host;
3055: o->jump_port = port;
3056: o->proxy_command = xstrdup("none");
3057: user = host = NULL;
3058: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
3059: o->jump_extra = xstrdup(s);
3060: o->jump_extra[cp - s] = '\0';
3061: }
1.259 djm 3062: }
1.258 naddy 3063: }
1.257 djm 3064: ret = 0;
3065: out:
1.258 naddy 3066: free(orig);
1.257 djm 3067: free(user);
3068: free(host);
3069: return ret;
1.280 millert 3070: }
3071:
3072: int
3073: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
3074: {
1.344 djm 3075: char *user = NULL, *host = NULL, *path = NULL;
3076: int r, port;
1.280 millert 3077:
1.344 djm 3078: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 3079: if (r == 0 && path != NULL)
3080: r = -1; /* path not allowed */
1.344 djm 3081: if (r == 0) {
3082: if (userp != NULL) {
3083: *userp = user;
3084: user = NULL;
3085: }
3086: if (hostp != NULL) {
3087: *hostp = host;
3088: host = NULL;
3089: }
3090: if (portp != NULL)
3091: *portp = port;
3092: }
3093: free(user);
3094: free(host);
3095: free(path);
1.280 millert 3096: return r;
1.257 djm 3097: }
3098:
1.221 djm 3099: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3100: static const char *
3101: fmt_multistate_int(int val, const struct multistate *m)
3102: {
3103: u_int i;
3104:
3105: for (i = 0; m[i].key != NULL; i++) {
3106: if (m[i].value == val)
3107: return m[i].key;
3108: }
3109: return "UNKNOWN";
3110: }
3111:
3112: static const char *
3113: fmt_intarg(OpCodes code, int val)
3114: {
3115: if (val == -1)
3116: return "unset";
3117: switch (code) {
3118: case oAddressFamily:
3119: return fmt_multistate_int(val, multistate_addressfamily);
3120: case oVerifyHostKeyDNS:
1.232 djm 3121: case oUpdateHostkeys:
1.221 djm 3122: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3123: case oStrictHostKeyChecking:
3124: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3125: case oControlMaster:
3126: return fmt_multistate_int(val, multistate_controlmaster);
3127: case oTunnel:
3128: return fmt_multistate_int(val, multistate_tunnel);
3129: case oRequestTTY:
3130: return fmt_multistate_int(val, multistate_requesttty);
1.359 djm 3131: case oSessionType:
3132: return fmt_multistate_int(val, multistate_sessiontype);
1.221 djm 3133: case oCanonicalizeHostname:
3134: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3135: case oAddKeysToAgent:
3136: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.364 djm 3137: case oPubkeyAuthentication:
3138: return fmt_multistate_int(val, multistate_pubkey_auth);
1.224 djm 3139: case oFingerprintHash:
3140: return ssh_digest_alg_name(val);
1.221 djm 3141: default:
3142: switch (val) {
3143: case 0:
3144: return "no";
3145: case 1:
3146: return "yes";
3147: default:
3148: return "UNKNOWN";
3149: }
3150: }
3151: }
3152:
3153: static const char *
3154: lookup_opcode_name(OpCodes code)
3155: {
3156: u_int i;
3157:
3158: for (i = 0; keywords[i].name != NULL; i++)
3159: if (keywords[i].opcode == code)
3160: return(keywords[i].name);
3161: return "UNKNOWN";
3162: }
3163:
3164: static void
3165: dump_cfg_int(OpCodes code, int val)
3166: {
3167: printf("%s %d\n", lookup_opcode_name(code), val);
3168: }
3169:
3170: static void
3171: dump_cfg_fmtint(OpCodes code, int val)
3172: {
3173: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3174: }
3175:
3176: static void
3177: dump_cfg_string(OpCodes code, const char *val)
3178: {
3179: if (val == NULL)
3180: return;
3181: printf("%s %s\n", lookup_opcode_name(code), val);
3182: }
3183:
3184: static void
3185: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3186: {
3187: u_int i;
3188:
3189: for (i = 0; i < count; i++)
3190: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3191: }
3192:
3193: static void
3194: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3195: {
3196: u_int i;
3197:
3198: printf("%s", lookup_opcode_name(code));
1.356 djm 3199: if (count == 0)
3200: printf(" none");
1.221 djm 3201: for (i = 0; i < count; i++)
3202: printf(" %s", vals[i]);
3203: printf("\n");
3204: }
3205:
3206: static void
3207: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3208: {
3209: const struct Forward *fwd;
3210: u_int i;
3211:
3212: /* oDynamicForward */
3213: for (i = 0; i < count; i++) {
3214: fwd = &fwds[i];
1.265 djm 3215: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3216: strcmp(fwd->connect_host, "socks") != 0)
3217: continue;
1.265 djm 3218: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3219: strcmp(fwd->connect_host, "socks") == 0)
3220: continue;
3221: printf("%s", lookup_opcode_name(code));
3222: if (fwd->listen_port == PORT_STREAMLOCAL)
3223: printf(" %s", fwd->listen_path);
3224: else if (fwd->listen_host == NULL)
3225: printf(" %d", fwd->listen_port);
3226: else {
3227: printf(" [%s]:%d",
3228: fwd->listen_host, fwd->listen_port);
3229: }
3230: if (code != oDynamicForward) {
3231: if (fwd->connect_port == PORT_STREAMLOCAL)
3232: printf(" %s", fwd->connect_path);
3233: else if (fwd->connect_host == NULL)
3234: printf(" %d", fwd->connect_port);
3235: else {
3236: printf(" [%s]:%d",
3237: fwd->connect_host, fwd->connect_port);
3238: }
3239: }
3240: printf("\n");
3241: }
3242: }
3243:
3244: void
3245: dump_client_config(Options *o, const char *host)
3246: {
1.326 djm 3247: int i, r;
3248: char buf[8], *all_key;
3249:
3250: /*
3251: * Expand HostKeyAlgorithms name lists. This isn't handled in
3252: * fill_default_options() like the other algorithm lists because
3253: * the host key algorithms are by default dynamically chosen based
3254: * on the host's keys found in known_hosts.
3255: */
3256: all_key = sshkey_alg_list(0, 0, 1, ',');
3257: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3258: all_key)) != 0)
1.340 djm 3259: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3260: free(all_key);
1.240 djm 3261:
1.221 djm 3262: /* Most interesting options first: user, host, port */
1.372 dtucker 3263: dump_cfg_string(oHost, o->host_arg);
1.221 djm 3264: dump_cfg_string(oUser, o->user);
1.306 jmc 3265: dump_cfg_string(oHostname, host);
1.221 djm 3266: dump_cfg_int(oPort, o->port);
3267:
3268: /* Flag options */
3269: dump_cfg_fmtint(oAddressFamily, o->address_family);
3270: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3271: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3272: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3273: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3274: dump_cfg_fmtint(oCompression, o->compression);
3275: dump_cfg_fmtint(oControlMaster, o->control_master);
3276: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3277: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3278: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3279: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3280: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3281: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3282: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3283: #ifdef GSSAPI
3284: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3285: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3286: #endif /* GSSAPI */
3287: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3288: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3289: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3290: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3291: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3292: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3293: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3294: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3295: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3296: dump_cfg_fmtint(oRequestTTY, o->request_tty);
1.359 djm 3297: dump_cfg_fmtint(oSessionType, o->session_type);
1.360 djm 3298: dump_cfg_fmtint(oStdinNull, o->stdin_null);
1.361 djm 3299: dump_cfg_fmtint(oForkAfterAuthentication, o->fork_after_authentication);
1.221 djm 3300: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3301: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3302: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3303: dump_cfg_fmtint(oTunnel, o->tun_open);
3304: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3305: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3306: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.370 djm 3307: dump_cfg_fmtint(oEnableEscapeCommandline, o->enable_escape_commandline);
1.221 djm 3308:
3309: /* Integer options */
3310: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3311: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3312: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3313: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3314: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3315: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
1.369 djm 3316: dump_cfg_int(oRequiredRSASize, o->required_rsa_size);
1.221 djm 3317:
3318: /* String options */
3319: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3320: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3321: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3322: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3323: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3324: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3325: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3326: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3327: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3328: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3329: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3330: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3331: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3332: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3333: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3334: dump_cfg_string(oMacs, o->macs);
1.266 djm 3335: #ifdef ENABLE_PKCS11
1.221 djm 3336: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3337: #endif
1.310 djm 3338: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3339: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3340: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3341: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3342: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3343: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.221 djm 3344:
1.230 djm 3345: /* Forwards */
1.221 djm 3346: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3347: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3348: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3349:
3350: /* String array options */
3351: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3352: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3353: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3354: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3355: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3356: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3357: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3358: dump_cfg_strarray_oneline(oLogVerbose,
3359: o->num_log_verbose, o->log_verbose);
1.221 djm 3360:
3361: /* Special cases */
1.351 markus 3362:
3363: /* PermitRemoteOpen */
3364: if (o->num_permitted_remote_opens == 0)
3365: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3366: else
3367: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3368: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3369:
3370: /* AddKeysToAgent */
3371: if (o->add_keys_to_agent_lifespan <= 0)
3372: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3373: else {
3374: printf("addkeystoagent%s %d\n",
3375: o->add_keys_to_agent == 3 ? " confirm" : "",
3376: o->add_keys_to_agent_lifespan);
3377: }
1.319 djm 3378:
3379: /* oForwardAgent */
3380: if (o->forward_agent_sock_path == NULL)
3381: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3382: else
3383: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3384:
3385: /* oConnectTimeout */
3386: if (o->connection_timeout == -1)
3387: printf("connecttimeout none\n");
3388: else
3389: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3390:
3391: /* oTunnelDevice */
3392: printf("tunneldevice");
3393: if (o->tun_local == SSH_TUNID_ANY)
3394: printf(" any");
3395: else
3396: printf(" %d", o->tun_local);
3397: if (o->tun_remote == SSH_TUNID_ANY)
3398: printf(":any");
3399: else
3400: printf(":%d", o->tun_remote);
3401: printf("\n");
3402:
3403: /* oCanonicalizePermittedCNAMEs */
1.362 djm 3404: printf("canonicalizePermittedcnames");
3405: if (o->num_permitted_cnames == 0)
1.363 djm 3406: printf(" none");
1.362 djm 3407: for (i = 0; i < o->num_permitted_cnames; i++) {
3408: printf(" %s:%s", o->permitted_cnames[i].source_list,
3409: o->permitted_cnames[i].target_list);
1.221 djm 3410: }
1.362 djm 3411: printf("\n");
1.221 djm 3412:
3413: /* oControlPersist */
3414: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3415: dump_cfg_fmtint(oControlPersist, o->control_persist);
3416: else
3417: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3418:
3419: /* oEscapeChar */
3420: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3421: printf("escapechar none\n");
3422: else {
1.257 djm 3423: vis(buf, o->escape_char, VIS_WHITE, 0);
3424: printf("escapechar %s\n", buf);
1.221 djm 3425: }
3426:
3427: /* oIPQoS */
3428: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3429: printf("%s\n", iptos2str(o->ip_qos_bulk));
3430:
3431: /* oRekeyLimit */
1.249 dtucker 3432: printf("rekeylimit %llu %d\n",
3433: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3434:
3435: /* oStreamLocalBindMask */
3436: printf("streamlocalbindmask 0%o\n",
3437: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3438:
3439: /* oLogFacility */
3440: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3441:
3442: /* oProxyCommand / oProxyJump */
3443: if (o->jump_host == NULL)
3444: dump_cfg_string(oProxyCommand, o->proxy_command);
3445: else {
3446: /* Check for numeric addresses */
3447: i = strchr(o->jump_host, ':') != NULL ||
3448: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3449: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3450: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3451: /* optional additional jump spec */
3452: o->jump_extra == NULL ? "" : o->jump_extra,
3453: o->jump_extra == NULL ? "" : ",",
1.257 djm 3454: /* optional user */
3455: o->jump_user == NULL ? "" : o->jump_user,
3456: o->jump_user == NULL ? "" : "@",
3457: /* opening [ if hostname is numeric */
3458: i ? "[" : "",
3459: /* mandatory hostname */
3460: o->jump_host,
3461: /* closing ] if hostname is numeric */
3462: i ? "]" : "",
3463: /* optional port number */
3464: o->jump_port <= 0 ? "" : ":",
1.259 djm 3465: o->jump_port <= 0 ? "" : buf);
1.257 djm 3466: }
1.1 deraadt 3467: }
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