Annotation of src/usr.bin/ssh/readconf.c, Revision 1.366
1.366 ! dtucker 1: /* $OpenBSD: readconf.c,v 1.365 2022/02/04 02:49:17 dtucker Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
21: #include <netinet/in.h>
1.190 djm 22: #include <netinet/ip.h>
1.148 stevesk 23:
24: #include <ctype.h>
1.154 stevesk 25: #include <errno.h>
1.206 djm 26: #include <fcntl.h>
1.252 djm 27: #include <glob.h>
1.155 stevesk 28: #include <netdb.h>
1.206 djm 29: #include <paths.h>
30: #include <pwd.h>
1.159 deraadt 31: #include <signal.h>
1.158 stevesk 32: #include <stdio.h>
1.157 stevesk 33: #include <string.h>
1.312 deraadt 34: #include <stdarg.h>
1.156 stevesk 35: #include <unistd.h>
1.228 deraadt 36: #include <limits.h>
1.200 dtucker 37: #include <util.h>
1.221 djm 38: #include <vis.h>
1.1 deraadt 39:
1.159 deraadt 40: #include "xmalloc.h"
1.1 deraadt 41: #include "ssh.h"
1.297 djm 42: #include "ssherr.h"
1.25 markus 43: #include "compat.h"
1.58 markus 44: #include "cipher.h"
1.55 markus 45: #include "pathnames.h"
1.58 markus 46: #include "log.h"
1.227 djm 47: #include "sshkey.h"
1.220 millert 48: #include "misc.h"
1.58 markus 49: #include "readconf.h"
50: #include "match.h"
1.62 markus 51: #include "kex.h"
52: #include "mac.h"
1.206 djm 53: #include "uidswap.h"
1.221 djm 54: #include "myproposal.h"
1.224 djm 55: #include "digest.h"
1.1 deraadt 56:
57: /* Format of the configuration file:
58:
59: # Configuration data is parsed as follows:
60: # 1. command line options
61: # 2. user-specific file
62: # 3. system-wide file
63: # Any configuration value is only changed the first time it is set.
64: # Thus, host-specific definitions should be at the beginning of the
65: # configuration file, and defaults at the end.
66:
67: # Host-specific declarations. These may override anything above. A single
68: # host may match multiple declarations; these are processed in the order
69: # that they are given in.
70:
71: Host *.ngs.fi ngs.fi
1.96 markus 72: User foo
1.1 deraadt 73:
74: Host fake.com
1.306 jmc 75: Hostname another.host.name.real.org
1.1 deraadt 76: User blaah
77: Port 34289
78: ForwardX11 no
79: ForwardAgent no
80:
81: Host books.com
82: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 83: Ciphers 3des-cbc
1.1 deraadt 84:
85: Host fascist.blob.com
86: Port 23123
87: User tylonen
88: PasswordAuthentication no
89:
90: Host puukko.hut.fi
91: User t35124p
92: ProxyCommand ssh-proxy %h %p
93:
94: Host *.fr
1.96 markus 95: PublicKeyAuthentication no
1.1 deraadt 96:
97: Host *.su
1.266 djm 98: Ciphers aes128-ctr
1.1 deraadt 99: PasswordAuthentication no
100:
1.144 reyk 101: Host vpn.fake.com
102: Tunnel yes
103: TunnelDevice 3
104:
1.1 deraadt 105: # Defaults for various options
106: Host *
107: ForwardAgent no
1.50 markus 108: ForwardX11 no
1.1 deraadt 109: PasswordAuthentication yes
110: StrictHostKeyChecking yes
1.126 markus 111: TcpKeepAlive no
1.1 deraadt 112: IdentityFile ~/.ssh/identity
113: Port 22
114: EscapeChar ~
115:
116: */
117:
1.252 djm 118: static int read_config_file_depth(const char *filename, struct passwd *pw,
119: const char *host, const char *original_host, Options *options,
1.302 djm 120: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 121: static int process_config_line_depth(Options *options, struct passwd *pw,
122: const char *host, const char *original_host, char *line,
1.302 djm 123: const char *filename, int linenum, int *activep, int flags,
124: int *want_final_pass, int depth);
1.252 djm 125:
1.1 deraadt 126: /* Keyword tokens. */
127:
1.17 markus 128: typedef enum {
129: oBadOption,
1.252 djm 130: oHost, oMatch, oInclude,
1.186 djm 131: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
132: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 133: oPasswordAuthentication,
1.358 dtucker 134: oXAuthLocation,
1.317 dtucker 135: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.351 markus 136: oPermitRemoteOpen,
1.253 markus 137: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 138: oUser, oEscapeChar, oProxyCommand,
1.17 markus 139: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
140: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 141: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 142: oLogFacility, oLogLevel, oLogVerbose, oCiphers, oMacs,
1.221 djm 143: oPubkeyAuthentication,
1.67 markus 144: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 145: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 146: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 147: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 148: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 149: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 150: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 151: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 152: oHashKnownHosts,
1.277 bluhm 153: oTunnel, oTunnelDevice,
154: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 155: oVisualHostKey,
1.360 djm 156: oKexAlgorithms, oIPQoS, oRequestTTY, oSessionType, oStdinNull,
1.361 djm 157: oForkAfterAuthentication, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 158: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
159: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 160: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.350 dtucker 161: oFingerprintHash, oUpdateHostkeys, oHostbasedAcceptedAlgorithms,
1.349 dtucker 162: oPubkeyAcceptedAlgorithms, oCASignatureAlgorithms, oProxyJump,
1.346 djm 163: oSecurityKeyProvider, oKnownHostsCommand,
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 },
1.171 djm 309:
1.92 stevesk 310: { NULL, oBadOption }
1.13 markus 311: };
312:
1.351 markus 313: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 314:
315: const char *
316: kex_default_pk_alg(void)
317: {
1.344 djm 318: static char *pkalgs;
319:
320: if (pkalgs == NULL) {
321: char *all_key;
322:
323: all_key = sshkey_alg_list(0, 0, 1, ',');
324: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
325: free(all_key);
326: }
327: return pkalgs;
1.320 dtucker 328: }
329:
1.327 dtucker 330: char *
331: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
332: const char *user)
333: {
334: struct ssh_digest_ctx *md;
335: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
336:
337: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
338: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
339: ssh_digest_update(md, host, strlen(host)) < 0 ||
340: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
341: ssh_digest_update(md, user, strlen(user)) < 0 ||
342: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 343: fatal_f("mux digest failed");
1.327 dtucker 344: ssh_digest_free(md);
345: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
346: }
347:
1.19 markus 348: /*
349: * Adds a local TCP/IP port forward to options. Never returns if there is an
350: * error.
351: */
1.1 deraadt 352:
1.26 markus 353: void
1.220 millert 354: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 355: {
1.220 millert 356: struct Forward *fwd;
1.251 djm 357: int i;
1.185 djm 358:
1.251 djm 359: /* Don't add duplicates */
360: for (i = 0; i < options->num_local_forwards; i++) {
361: if (forward_equals(newfwd, options->local_forwards + i))
362: return;
363: }
1.234 deraadt 364: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 365: options->num_local_forwards + 1,
366: sizeof(*options->local_forwards));
1.17 markus 367: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 368:
1.172 stevesk 369: fwd->listen_host = newfwd->listen_host;
1.135 djm 370: fwd->listen_port = newfwd->listen_port;
1.220 millert 371: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 372: fwd->connect_host = newfwd->connect_host;
1.135 djm 373: fwd->connect_port = newfwd->connect_port;
1.220 millert 374: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 375: }
376:
1.19 markus 377: /*
378: * Adds a remote TCP/IP port forward to options. Never returns if there is
379: * an error.
380: */
1.1 deraadt 381:
1.26 markus 382: void
1.220 millert 383: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 384: {
1.220 millert 385: struct Forward *fwd;
1.251 djm 386: int i;
1.185 djm 387:
1.251 djm 388: /* Don't add duplicates */
389: for (i = 0; i < options->num_remote_forwards; i++) {
390: if (forward_equals(newfwd, options->remote_forwards + i))
391: return;
392: }
1.234 deraadt 393: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 394: options->num_remote_forwards + 1,
395: sizeof(*options->remote_forwards));
1.17 markus 396: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 397:
1.172 stevesk 398: fwd->listen_host = newfwd->listen_host;
1.135 djm 399: fwd->listen_port = newfwd->listen_port;
1.220 millert 400: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 401: fwd->connect_host = newfwd->connect_host;
1.135 djm 402: fwd->connect_port = newfwd->connect_port;
1.220 millert 403: fwd->connect_path = newfwd->connect_path;
1.194 markus 404: fwd->handle = newfwd->handle;
1.184 markus 405: fwd->allocated_port = 0;
1.1 deraadt 406: }
407:
1.90 stevesk 408: static void
409: clear_forwardings(Options *options)
410: {
411: int i;
412:
1.135 djm 413: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 414: free(options->local_forwards[i].listen_host);
1.220 millert 415: free(options->local_forwards[i].listen_path);
1.202 djm 416: free(options->local_forwards[i].connect_host);
1.220 millert 417: free(options->local_forwards[i].connect_path);
1.135 djm 418: }
1.185 djm 419: if (options->num_local_forwards > 0) {
1.202 djm 420: free(options->local_forwards);
1.185 djm 421: options->local_forwards = NULL;
422: }
1.90 stevesk 423: options->num_local_forwards = 0;
1.135 djm 424: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 425: free(options->remote_forwards[i].listen_host);
1.220 millert 426: free(options->remote_forwards[i].listen_path);
1.202 djm 427: free(options->remote_forwards[i].connect_host);
1.220 millert 428: free(options->remote_forwards[i].connect_path);
1.135 djm 429: }
1.185 djm 430: if (options->num_remote_forwards > 0) {
1.202 djm 431: free(options->remote_forwards);
1.185 djm 432: options->remote_forwards = NULL;
433: }
1.90 stevesk 434: options->num_remote_forwards = 0;
1.145 reyk 435: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 436: }
437:
1.195 dtucker 438: void
1.241 djm 439: add_certificate_file(Options *options, const char *path, int userprovided)
440: {
441: int i;
442:
443: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
444: fatal("Too many certificate files specified (max %d)",
445: SSH_MAX_CERTIFICATE_FILES);
446:
447: /* Avoid registering duplicates */
448: for (i = 0; i < options->num_certificate_files; i++) {
449: if (options->certificate_file_userprovided[i] == userprovided &&
450: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 451: debug2_f("ignoring duplicate key %s", path);
1.241 djm 452: return;
453: }
454: }
455:
456: options->certificate_file_userprovided[options->num_certificate_files] =
457: userprovided;
458: options->certificate_files[options->num_certificate_files++] =
459: xstrdup(path);
460: }
461:
462: void
1.195 dtucker 463: add_identity_file(Options *options, const char *dir, const char *filename,
464: int userprovided)
465: {
466: char *path;
1.219 djm 467: int i;
1.195 dtucker 468:
469: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
470: fatal("Too many identity files specified (max %d)",
471: SSH_MAX_IDENTITY_FILES);
472:
473: if (dir == NULL) /* no dir, filename is absolute */
474: path = xstrdup(filename);
1.276 djm 475: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
476: fatal("Identity file path %s too long", path);
1.219 djm 477:
478: /* Avoid registering duplicates */
479: for (i = 0; i < options->num_identity_files; i++) {
480: if (options->identity_file_userprovided[i] == userprovided &&
481: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 482: debug2_f("ignoring duplicate key %s", path);
1.219 djm 483: free(path);
484: return;
485: }
486: }
1.195 dtucker 487:
488: options->identity_file_userprovided[options->num_identity_files] =
489: userprovided;
490: options->identity_files[options->num_identity_files++] = path;
491: }
492:
1.206 djm 493: int
494: default_ssh_port(void)
495: {
496: static int port;
497: struct servent *sp;
498:
499: if (port == 0) {
500: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
501: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
502: }
503: return port;
504: }
505:
506: /*
507: * Execute a command in a shell.
508: * Return its exit status or -1 on abnormal exit.
509: */
510: static int
511: execute_in_shell(const char *cmd)
512: {
1.243 dtucker 513: char *shell;
1.206 djm 514: pid_t pid;
1.337 djm 515: int status;
1.206 djm 516:
517: if ((shell = getenv("SHELL")) == NULL)
518: shell = _PATH_BSHELL;
1.308 djm 519:
520: if (access(shell, X_OK) == -1) {
521: fatal("Shell \"%s\" is not executable: %s",
522: shell, strerror(errno));
523: }
1.206 djm 524:
525: debug("Executing command: '%.500s'", cmd);
526:
527: /* Fork and execute the command. */
528: if ((pid = fork()) == 0) {
1.245 djm 529: char *argv[4];
1.206 djm 530:
1.337 djm 531: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 532: fatal_f("stdfd_devnull failed");
1.206 djm 533: closefrom(STDERR_FILENO + 1);
1.245 djm 534:
535: argv[0] = shell;
536: argv[1] = "-c";
537: argv[2] = xstrdup(cmd);
538: argv[3] = NULL;
1.206 djm 539:
540: execv(argv[0], argv);
541: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
542: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 543: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 544: kill(getpid(), SIGTERM);
545: _exit(1);
546: }
547: /* Parent. */
1.307 deraadt 548: if (pid == -1)
1.340 djm 549: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 550:
551: while (waitpid(pid, &status, 0) == -1) {
552: if (errno != EINTR && errno != EAGAIN)
1.340 djm 553: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 554: }
555: if (!WIFEXITED(status)) {
556: error("command '%.100s' exited abnormally", cmd);
557: return -1;
1.221 djm 558: }
1.206 djm 559: debug3("command returned status %d", WEXITSTATUS(status));
560: return WEXITSTATUS(status);
561: }
562:
563: /*
564: * Parse and execute a Match directive.
565: */
566: static int
567: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 568: const char *host_arg, const char *original_host, int final_pass,
569: int *want_final_pass, const char *filename, int linenum)
1.206 djm 570: {
1.221 djm 571: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 572: const char *ruser;
1.221 djm 573: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 574: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 575: char uidstr[32];
1.206 djm 576:
577: /*
578: * Configuration is likely to be incomplete at this point so we
579: * must be prepared to use default values.
580: */
581: port = options->port <= 0 ? default_ssh_port() : options->port;
582: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 583: if (final_pass) {
1.250 djm 584: host = xstrdup(options->hostname);
585: } else if (options->hostname != NULL) {
1.212 djm 586: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 587: host = percent_expand(options->hostname,
588: "h", host_arg, (char *)NULL);
1.250 djm 589: } else {
1.211 djm 590: host = xstrdup(host_arg);
1.250 djm 591: }
1.206 djm 592:
1.221 djm 593: debug2("checking match for '%s' host %s originally %s",
594: cp, host, original_host);
595: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
1.356 djm 596: /* Terminate on comment */
597: if (*attrib == '#') {
598: cp = NULL; /* mark all arguments consumed */
599: break;
600: }
601: arg = criteria = NULL;
1.221 djm 602: this_result = 1;
603: if ((negate = attrib[0] == '!'))
604: attrib++;
1.356 djm 605: /* Criterion "all" has no argument and must appear alone */
1.213 dtucker 606: if (strcasecmp(attrib, "all") == 0) {
1.356 djm 607: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
608: *arg != '\0' && *arg != '#')) {
1.221 djm 609: error("%.200s line %d: '%s' cannot be combined "
610: "with other Match attributes",
611: filename, linenum, oattrib);
1.213 dtucker 612: result = -1;
613: goto out;
614: }
1.356 djm 615: if (arg != NULL && *arg == '#')
616: cp = NULL; /* mark all arguments consumed */
1.221 djm 617: if (result)
618: result = negate ? 0 : 1;
1.213 dtucker 619: goto out;
620: }
1.221 djm 621: attributes++;
1.356 djm 622: /* criteria "final" and "canonical" have no argument */
1.302 djm 623: if (strcasecmp(attrib, "canonical") == 0 ||
624: strcasecmp(attrib, "final") == 0) {
625: /*
626: * If the config requests "Match final" then remember
627: * this so we can perform a second pass later.
628: */
629: if (strcasecmp(attrib, "final") == 0 &&
630: want_final_pass != NULL)
631: *want_final_pass = 1;
632: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 633: if (r == (negate ? 1 : 0))
634: this_result = result = 0;
635: debug3("%.200s line %d: %smatched '%s'",
636: filename, linenum,
637: this_result ? "" : "not ", oattrib);
638: continue;
639: }
640: /* All other criteria require an argument */
1.356 djm 641: if ((arg = strdelim(&cp)) == NULL ||
642: *arg == '\0' || *arg == '#') {
1.206 djm 643: error("Missing Match criteria for %s", attrib);
1.211 djm 644: result = -1;
645: goto out;
1.206 djm 646: }
647: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 648: criteria = xstrdup(host);
1.235 djm 649: r = match_hostname(host, arg) == 1;
1.221 djm 650: if (r == (negate ? 1 : 0))
651: this_result = result = 0;
1.206 djm 652: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 653: criteria = xstrdup(original_host);
1.235 djm 654: r = match_hostname(original_host, arg) == 1;
1.221 djm 655: if (r == (negate ? 1 : 0))
656: this_result = result = 0;
1.206 djm 657: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 658: criteria = xstrdup(ruser);
1.235 djm 659: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 660: if (r == (negate ? 1 : 0))
661: this_result = result = 0;
1.206 djm 662: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 663: criteria = xstrdup(pw->pw_name);
1.235 djm 664: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 665: if (r == (negate ? 1 : 0))
666: this_result = result = 0;
1.210 djm 667: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 668: char *conn_hash_hex, *keyalias;
1.327 dtucker 669:
1.206 djm 670: if (gethostname(thishost, sizeof(thishost)) == -1)
671: fatal("gethostname: %s", strerror(errno));
672: strlcpy(shorthost, thishost, sizeof(shorthost));
673: shorthost[strcspn(thishost, ".")] = '\0';
674: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 675: snprintf(uidstr, sizeof(uidstr), "%llu",
676: (unsigned long long)pw->pw_uid);
1.327 dtucker 677: conn_hash_hex = ssh_connection_hash(thishost, host,
1.353 djm 678: portstr, ruser);
1.333 dtucker 679: keyalias = options->host_key_alias ?
680: options->host_key_alias : host;
1.206 djm 681:
682: cmd = percent_expand(arg,
1.327 dtucker 683: "C", conn_hash_hex,
1.206 djm 684: "L", shorthost,
685: "d", pw->pw_dir,
686: "h", host,
1.333 dtucker 687: "k", keyalias,
1.206 djm 688: "l", thishost,
1.221 djm 689: "n", original_host,
1.206 djm 690: "p", portstr,
691: "r", ruser,
692: "u", pw->pw_name,
1.288 djm 693: "i", uidstr,
1.206 djm 694: (char *)NULL);
1.327 dtucker 695: free(conn_hash_hex);
1.217 djm 696: if (result != 1) {
697: /* skip execution if prior predicate failed */
1.221 djm 698: debug3("%.200s line %d: skipped exec "
699: "\"%.100s\"", filename, linenum, cmd);
700: free(cmd);
701: continue;
702: }
703: r = execute_in_shell(cmd);
704: if (r == -1) {
705: fatal("%.200s line %d: match exec "
706: "'%.100s' error", filename,
707: linenum, cmd);
1.217 djm 708: }
1.221 djm 709: criteria = xstrdup(cmd);
1.206 djm 710: free(cmd);
1.221 djm 711: /* Force exit status to boolean */
712: r = r == 0;
713: if (r == (negate ? 1 : 0))
714: this_result = result = 0;
1.206 djm 715: } else {
716: error("Unsupported Match attribute %s", attrib);
1.211 djm 717: result = -1;
718: goto out;
1.206 djm 719: }
1.221 djm 720: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
721: filename, linenum, this_result ? "": "not ",
722: oattrib, criteria);
723: free(criteria);
1.213 dtucker 724: }
725: if (attributes == 0) {
726: error("One or more attributes required for Match");
727: result = -1;
728: goto out;
1.206 djm 729: }
1.221 djm 730: out:
731: if (result != -1)
732: debug2("match %sfound", result ? "" : "not ");
1.206 djm 733: *condition = cp;
1.211 djm 734: free(host);
1.206 djm 735: return result;
736: }
737:
1.286 djm 738: /* Remove environment variable by pattern */
739: static void
740: rm_env(Options *options, const char *arg, const char *filename, int linenum)
741: {
1.330 djm 742: int i, j, onum_send_env = options->num_send_env;
1.286 djm 743: char *cp;
744:
745: /* Remove an environment variable */
746: for (i = 0; i < options->num_send_env; ) {
747: cp = xstrdup(options->send_env[i]);
748: if (!match_pattern(cp, arg + 1)) {
749: free(cp);
750: i++;
751: continue;
752: }
753: debug3("%s line %d: removing environment %s",
754: filename, linenum, cp);
755: free(cp);
756: free(options->send_env[i]);
757: options->send_env[i] = NULL;
758: for (j = i; j < options->num_send_env - 1; j++) {
759: options->send_env[j] = options->send_env[j + 1];
760: options->send_env[j + 1] = NULL;
761: }
762: options->num_send_env--;
763: /* NB. don't increment i */
1.330 djm 764: }
765: if (onum_send_env != options->num_send_env) {
766: options->send_env = xrecallocarray(options->send_env,
767: onum_send_env, options->num_send_env,
768: sizeof(*options->send_env));
1.286 djm 769: }
770: }
771:
1.19 markus 772: /*
1.70 stevesk 773: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 774: */
1.26 markus 775: static OpCodes
1.199 djm 776: parse_token(const char *cp, const char *filename, int linenum,
777: const char *ignored_unknown)
1.1 deraadt 778: {
1.199 djm 779: int i;
1.1 deraadt 780:
1.17 markus 781: for (i = 0; keywords[i].name; i++)
1.199 djm 782: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 783: return keywords[i].opcode;
1.235 djm 784: if (ignored_unknown != NULL &&
785: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 786: return oIgnoredUnknownOption;
1.75 stevesk 787: error("%s: line %d: Bad configuration option: %s",
788: filename, linenum, cp);
1.17 markus 789: return oBadOption;
1.1 deraadt 790: }
791:
1.207 djm 792: /* Multistate option parsing */
793: struct multistate {
794: char *key;
795: int value;
796: };
797: static const struct multistate multistate_flag[] = {
798: { "true", 1 },
799: { "false", 0 },
800: { "yes", 1 },
801: { "no", 0 },
802: { NULL, -1 }
803: };
804: static const struct multistate multistate_yesnoask[] = {
805: { "true", 1 },
806: { "false", 0 },
807: { "yes", 1 },
808: { "no", 0 },
809: { "ask", 2 },
810: { NULL, -1 }
811: };
1.278 djm 812: static const struct multistate multistate_strict_hostkey[] = {
813: { "true", SSH_STRICT_HOSTKEY_YES },
814: { "false", SSH_STRICT_HOSTKEY_OFF },
815: { "yes", SSH_STRICT_HOSTKEY_YES },
816: { "no", SSH_STRICT_HOSTKEY_OFF },
817: { "ask", SSH_STRICT_HOSTKEY_ASK },
818: { "off", SSH_STRICT_HOSTKEY_OFF },
819: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
820: { NULL, -1 }
821: };
1.246 jcs 822: static const struct multistate multistate_yesnoaskconfirm[] = {
823: { "true", 1 },
824: { "false", 0 },
825: { "yes", 1 },
826: { "no", 0 },
827: { "ask", 2 },
828: { "confirm", 3 },
829: { NULL, -1 }
830: };
1.207 djm 831: static const struct multistate multistate_addressfamily[] = {
832: { "inet", AF_INET },
833: { "inet6", AF_INET6 },
834: { "any", AF_UNSPEC },
835: { NULL, -1 }
836: };
837: static const struct multistate multistate_controlmaster[] = {
838: { "true", SSHCTL_MASTER_YES },
839: { "yes", SSHCTL_MASTER_YES },
840: { "false", SSHCTL_MASTER_NO },
841: { "no", SSHCTL_MASTER_NO },
842: { "auto", SSHCTL_MASTER_AUTO },
843: { "ask", SSHCTL_MASTER_ASK },
844: { "autoask", SSHCTL_MASTER_AUTO_ASK },
845: { NULL, -1 }
846: };
847: static const struct multistate multistate_tunnel[] = {
848: { "ethernet", SSH_TUNMODE_ETHERNET },
849: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
850: { "true", SSH_TUNMODE_DEFAULT },
851: { "yes", SSH_TUNMODE_DEFAULT },
852: { "false", SSH_TUNMODE_NO },
853: { "no", SSH_TUNMODE_NO },
854: { NULL, -1 }
855: };
856: static const struct multistate multistate_requesttty[] = {
857: { "true", REQUEST_TTY_YES },
858: { "yes", REQUEST_TTY_YES },
859: { "false", REQUEST_TTY_NO },
860: { "no", REQUEST_TTY_NO },
861: { "force", REQUEST_TTY_FORCE },
862: { "auto", REQUEST_TTY_AUTO },
863: { NULL, -1 }
864: };
1.359 djm 865: static const struct multistate multistate_sessiontype[] = {
866: { "none", SESSION_TYPE_NONE },
867: { "subsystem", SESSION_TYPE_SUBSYSTEM },
868: { "default", SESSION_TYPE_DEFAULT },
869: { NULL, -1 }
870: };
1.209 djm 871: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 872: { "true", SSH_CANONICALISE_YES },
873: { "false", SSH_CANONICALISE_NO },
874: { "yes", SSH_CANONICALISE_YES },
875: { "no", SSH_CANONICALISE_NO },
876: { "always", SSH_CANONICALISE_ALWAYS },
877: { NULL, -1 }
878: };
1.364 djm 879: static const struct multistate multistate_pubkey_auth[] = {
880: { "true", SSH_PUBKEY_AUTH_ALL },
881: { "false", SSH_PUBKEY_AUTH_NO },
882: { "yes", SSH_PUBKEY_AUTH_ALL },
883: { "no", SSH_PUBKEY_AUTH_NO },
884: { "unbound", SSH_PUBKEY_AUTH_UNBOUND },
885: { "host-bound", SSH_PUBKEY_AUTH_HBOUND },
886: { NULL, -1 }
887: };
1.322 dtucker 888: static const struct multistate multistate_compression[] = {
889: #ifdef WITH_ZLIB
890: { "yes", COMP_ZLIB },
891: #endif
892: { "no", COMP_NONE },
893: { NULL, -1 }
894: };
1.207 djm 895:
1.334 djm 896: static int
897: parse_multistate_value(const char *arg, const char *filename, int linenum,
898: const struct multistate *multistate_ptr)
899: {
900: int i;
901:
1.344 djm 902: if (!arg || *arg == '\0') {
903: error("%s line %d: missing argument.", filename, linenum);
904: return -1;
905: }
1.334 djm 906: for (i = 0; multistate_ptr[i].key != NULL; i++) {
907: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
908: return multistate_ptr[i].value;
909: }
910: return -1;
911: }
912:
1.19 markus 913: /*
914: * Processes a single option line as used in the configuration files. This
915: * only sets those values that have not already been set.
916: */
1.14 markus 917: int
1.206 djm 918: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 919: const char *original_host, char *line, const char *filename,
920: int linenum, int *activep, int flags)
1.1 deraadt 921: {
1.252 djm 922: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 923: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 924: }
925:
926: #define WHITESPACE " \t\r\n"
927: static int
928: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
929: const char *original_host, char *line, const char *filename,
1.302 djm 930: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 931: {
1.366 ! dtucker 932: char *str, **charptr, *endofnumber, *keyword, *arg, *arg2, *p;
1.339 djm 933: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 934: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 935: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 936: int remotefwd, dynamicfwd;
1.164 dtucker 937: LogLevel *log_level_ptr;
1.271 dtucker 938: SyslogFacility *log_facility_ptr;
1.201 dtucker 939: long long val64;
1.102 markus 940: size_t len;
1.220 millert 941: struct Forward fwd;
1.207 djm 942: const struct multistate *multistate_ptr;
1.208 djm 943: struct allowed_cname *cname;
1.252 djm 944: glob_t gl;
1.281 dtucker 945: const char *errstr;
1.356 djm 946: char **oav = NULL, **av;
947: int oac = 0, ac;
948: int ret = -1;
1.106 djm 949:
1.206 djm 950: if (activep == NULL) { /* We are processing a command line directive */
951: cmdline = 1;
952: activep = &cmdline;
953: }
954:
1.267 djm 955: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 956: if ((len = strlen(line)) == 0)
957: return 0;
958: for (len--; len > 0; len--) {
1.267 djm 959: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 960: break;
961: line[len] = '\0';
962: }
1.1 deraadt 963:
1.356 djm 964: str = line;
1.42 provos 965: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 966: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 967: return 0;
1.42 provos 968: /* Ignore leading whitespace. */
969: if (*keyword == '\0')
1.356 djm 970: keyword = strdelim(&str);
1.56 deraadt 971: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 972: return 0;
1.199 djm 973: /* Match lowercase keyword */
1.207 djm 974: lowercase(keyword);
1.17 markus 975:
1.356 djm 976: /* Prepare to parse remainder of line */
977: if (str != NULL)
978: str += strspn(str, WHITESPACE);
979: if (str == NULL || *str == '\0') {
980: error("%s line %d: no argument after keyword \"%s\"",
981: filename, linenum, keyword);
982: return -1;
983: }
1.199 djm 984: opcode = parse_token(keyword, filename, linenum,
985: options->ignored_unknown);
1.356 djm 986: if (argv_split(str, &oac, &oav, 1) != 0) {
987: error("%s line %d: invalid quotes", filename, linenum);
988: return -1;
989: }
990: ac = oac;
991: av = oav;
1.17 markus 992:
993: switch (opcode) {
994: case oBadOption:
1.19 markus 995: /* don't panic, but count bad options */
1.356 djm 996: goto out;
1.273 djm 997: case oIgnore:
1.356 djm 998: argv_consume(&ac);
999: break;
1.199 djm 1000: case oIgnoredUnknownOption:
1001: debug("%s line %d: Ignored unknown option \"%s\"",
1002: filename, linenum, keyword);
1.356 djm 1003: argv_consume(&ac);
1004: break;
1.111 djm 1005: case oConnectTimeout:
1006: intptr = &options->connection_timeout;
1.127 markus 1007: parse_time:
1.356 djm 1008: arg = argv_next(&ac, &av);
1.344 djm 1009: if (!arg || *arg == '\0') {
1010: error("%s line %d: missing time value.",
1.111 djm 1011: filename, linenum);
1.356 djm 1012: goto out;
1.344 djm 1013: }
1.221 djm 1014: if (strcmp(arg, "none") == 0)
1015: value = -1;
1.344 djm 1016: else if ((value = convtime(arg)) == -1) {
1017: error("%s line %d: invalid time value.",
1.111 djm 1018: filename, linenum);
1.356 djm 1019: goto out;
1.344 djm 1020: }
1.160 dtucker 1021: if (*activep && *intptr == -1)
1.111 djm 1022: *intptr = value;
1023: break;
1024:
1.17 markus 1025: case oForwardAgent:
1026: intptr = &options->forward_agent;
1.319 djm 1027:
1.356 djm 1028: arg = argv_next(&ac, &av);
1.344 djm 1029: if (!arg || *arg == '\0') {
1030: error("%s line %d: missing argument.",
1.319 djm 1031: filename, linenum);
1.356 djm 1032: goto out;
1.344 djm 1033: }
1.319 djm 1034:
1035: value = -1;
1036: multistate_ptr = multistate_flag;
1037: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1038: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1039: value = multistate_ptr[i].value;
1040: break;
1041: }
1042: }
1043: if (value != -1) {
1044: if (*activep && *intptr == -1)
1045: *intptr = value;
1046: break;
1047: }
1048: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1049: if (*activep && *intptr == -1)
1050: *intptr = 1;
1051:
1052: charptr = &options->forward_agent_sock_path;
1053: goto parse_agent_path;
1054:
1055: case oForwardX11:
1056: intptr = &options->forward_x11;
1.207 djm 1057: parse_flag:
1058: multistate_ptr = multistate_flag;
1059: parse_multistate:
1.356 djm 1060: arg = argv_next(&ac, &av);
1.334 djm 1061: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1062: multistate_ptr)) == -1) {
1.344 djm 1063: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1064: filename, linenum, arg);
1.356 djm 1065: goto out;
1.334 djm 1066: }
1.17 markus 1067: if (*activep && *intptr == -1)
1068: *intptr = value;
1069: break;
1070:
1.123 markus 1071: case oForwardX11Trusted:
1072: intptr = &options->forward_x11_trusted;
1073: goto parse_flag;
1.221 djm 1074:
1.186 djm 1075: case oForwardX11Timeout:
1076: intptr = &options->forward_x11_timeout;
1077: goto parse_time;
1.123 markus 1078:
1.17 markus 1079: case oGatewayPorts:
1.220 millert 1080: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1081: goto parse_flag;
1082:
1.153 markus 1083: case oExitOnForwardFailure:
1084: intptr = &options->exit_on_forward_failure;
1085: goto parse_flag;
1086:
1.17 markus 1087: case oPasswordAuthentication:
1088: intptr = &options->password_authentication;
1089: goto parse_flag;
1090:
1.48 markus 1091: case oKbdInteractiveAuthentication:
1092: intptr = &options->kbd_interactive_authentication;
1093: goto parse_flag;
1094:
1095: case oKbdInteractiveDevices:
1096: charptr = &options->kbd_interactive_devices;
1097: goto parse_string;
1098:
1.50 markus 1099: case oPubkeyAuthentication:
1.364 djm 1100: multistate_ptr = multistate_pubkey_auth;
1.50 markus 1101: intptr = &options->pubkey_authentication;
1.364 djm 1102: goto parse_multistate;
1.30 markus 1103:
1.72 markus 1104: case oHostbasedAuthentication:
1105: intptr = &options->hostbased_authentication;
1106: goto parse_flag;
1107:
1.118 markus 1108: case oGssAuthentication:
1109: intptr = &options->gss_authentication;
1110: goto parse_flag;
1111:
1112: case oGssDelegateCreds:
1113: intptr = &options->gss_deleg_creds;
1114: goto parse_flag;
1115:
1.17 markus 1116: case oBatchMode:
1117: intptr = &options->batch_mode;
1118: goto parse_flag;
1119:
1120: case oCheckHostIP:
1121: intptr = &options->check_host_ip;
1.167 grunk 1122: goto parse_flag;
1.17 markus 1123:
1.107 jakob 1124: case oVerifyHostKeyDNS:
1125: intptr = &options->verify_host_key_dns;
1.207 djm 1126: multistate_ptr = multistate_yesnoask;
1127: goto parse_multistate;
1.107 jakob 1128:
1.17 markus 1129: case oStrictHostKeyChecking:
1130: intptr = &options->strict_host_key_checking;
1.278 djm 1131: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1132: goto parse_multistate;
1.17 markus 1133:
1134: case oCompression:
1135: intptr = &options->compression;
1.322 dtucker 1136: multistate_ptr = multistate_compression;
1137: goto parse_multistate;
1.17 markus 1138:
1.126 markus 1139: case oTCPKeepAlive:
1140: intptr = &options->tcp_keep_alive;
1.17 markus 1141: goto parse_flag;
1142:
1.91 markus 1143: case oNoHostAuthenticationForLocalhost:
1144: intptr = &options->no_host_authentication_for_localhost;
1145: goto parse_flag;
1146:
1.17 markus 1147: case oNumberOfPasswordPrompts:
1148: intptr = &options->number_of_password_prompts;
1149: goto parse_int;
1150:
1.105 markus 1151: case oRekeyLimit:
1.356 djm 1152: arg = argv_next(&ac, &av);
1.344 djm 1153: if (!arg || *arg == '\0') {
1154: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1155: linenum);
1.356 djm 1156: goto out;
1.344 djm 1157: }
1.198 dtucker 1158: if (strcmp(arg, "default") == 0) {
1159: val64 = 0;
1160: } else {
1.344 djm 1161: if (scan_scaled(arg, &val64) == -1) {
1162: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1163: filename, linenum, arg, strerror(errno));
1.356 djm 1164: goto out;
1.344 djm 1165: }
1166: if (val64 != 0 && val64 < 16) {
1167: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1168: filename, linenum);
1.356 djm 1169: goto out;
1.344 djm 1170: }
1.105 markus 1171: }
1.165 djm 1172: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1173: options->rekey_limit = val64;
1.356 djm 1174: if (ac != 0) { /* optional rekey interval present */
1175: if (strcmp(av[0], "none") == 0) {
1176: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1177: break;
1178: }
1179: intptr = &options->rekey_interval;
1180: goto parse_time;
1181: }
1.105 markus 1182: break;
1183:
1.17 markus 1184: case oIdentityFile:
1.356 djm 1185: arg = argv_next(&ac, &av);
1.344 djm 1186: if (!arg || *arg == '\0') {
1187: error("%.200s line %d: Missing argument.",
1188: filename, linenum);
1.356 djm 1189: goto out;
1.344 djm 1190: }
1.17 markus 1191: if (*activep) {
1.50 markus 1192: intptr = &options->num_identity_files;
1.344 djm 1193: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1194: error("%.200s line %d: Too many identity files "
1195: "specified (max %d).", filename, linenum,
1196: SSH_MAX_IDENTITY_FILES);
1.356 djm 1197: goto out;
1.344 djm 1198: }
1.221 djm 1199: add_identity_file(options, NULL,
1200: arg, flags & SSHCONF_USERCONF);
1.17 markus 1201: }
1202: break;
1203:
1.241 djm 1204: case oCertificateFile:
1.356 djm 1205: arg = argv_next(&ac, &av);
1.344 djm 1206: if (!arg || *arg == '\0') {
1207: error("%.200s line %d: Missing argument.",
1.241 djm 1208: filename, linenum);
1.356 djm 1209: goto out;
1.344 djm 1210: }
1.241 djm 1211: if (*activep) {
1212: intptr = &options->num_certificate_files;
1213: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1214: error("%.200s line %d: Too many certificate "
1.241 djm 1215: "files specified (max %d).",
1216: filename, linenum,
1217: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1218: goto out;
1.241 djm 1219: }
1220: add_certificate_file(options, arg,
1221: flags & SSHCONF_USERCONF);
1222: }
1223: break;
1224:
1.34 markus 1225: case oXAuthLocation:
1226: charptr=&options->xauth_location;
1227: goto parse_string;
1228:
1.17 markus 1229: case oUser:
1230: charptr = &options->user;
1231: parse_string:
1.356 djm 1232: arg = argv_next(&ac, &av);
1.344 djm 1233: if (!arg || *arg == '\0') {
1234: error("%.200s line %d: Missing argument.",
1.193 djm 1235: filename, linenum);
1.356 djm 1236: goto out;
1.344 djm 1237: }
1.17 markus 1238: if (*activep && *charptr == NULL)
1.38 provos 1239: *charptr = xstrdup(arg);
1.17 markus 1240: break;
1241:
1242: case oGlobalKnownHostsFile:
1.193 djm 1243: cpptr = (char **)&options->system_hostfiles;
1244: uintptr = &options->num_system_hostfiles;
1245: max_entries = SSH_MAX_HOSTS_FILES;
1246: parse_char_array:
1.356 djm 1247: i = 0;
1.357 djm 1248: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1249: while ((arg = argv_next(&ac, &av)) != NULL) {
1250: if (*arg == '\0') {
1251: error("%s line %d: keyword %s empty argument",
1252: filename, linenum, keyword);
1253: goto out;
1254: }
1255: /* Allow "none" only in first position */
1256: if (strcasecmp(arg, "none") == 0) {
1257: if (i > 0 || ac > 0) {
1258: error("%s line %d: keyword %s \"none\" "
1259: "argument must appear alone.",
1260: filename, linenum, keyword);
1261: goto out;
1262: }
1263: }
1264: i++;
1.357 djm 1265: if (*activep && value) {
1.344 djm 1266: if ((*uintptr) >= max_entries) {
1.356 djm 1267: error("%s line %d: too many %s "
1268: "entries.", filename, linenum,
1269: keyword);
1270: goto out;
1.344 djm 1271: }
1.193 djm 1272: cpptr[(*uintptr)++] = xstrdup(arg);
1273: }
1274: }
1.356 djm 1275: break;
1.17 markus 1276:
1277: case oUserKnownHostsFile:
1.193 djm 1278: cpptr = (char **)&options->user_hostfiles;
1279: uintptr = &options->num_user_hostfiles;
1280: max_entries = SSH_MAX_HOSTS_FILES;
1281: goto parse_char_array;
1.27 markus 1282:
1.306 jmc 1283: case oHostname:
1.17 markus 1284: charptr = &options->hostname;
1285: goto parse_string;
1286:
1.52 markus 1287: case oHostKeyAlias:
1288: charptr = &options->host_key_alias;
1289: goto parse_string;
1290:
1.67 markus 1291: case oPreferredAuthentications:
1292: charptr = &options->preferred_authentications;
1293: goto parse_string;
1294:
1.77 markus 1295: case oBindAddress:
1296: charptr = &options->bind_address;
1297: goto parse_string;
1298:
1.282 djm 1299: case oBindInterface:
1300: charptr = &options->bind_interface;
1301: goto parse_string;
1302:
1.183 markus 1303: case oPKCS11Provider:
1304: charptr = &options->pkcs11_provider;
1.86 markus 1305: goto parse_string;
1.85 jakob 1306:
1.310 djm 1307: case oSecurityKeyProvider:
1308: charptr = &options->sk_provider;
1309: goto parse_string;
1310:
1.346 djm 1311: case oKnownHostsCommand:
1312: charptr = &options->known_hosts_command;
1313: goto parse_command;
1314:
1.17 markus 1315: case oProxyCommand:
1.144 reyk 1316: charptr = &options->proxy_command;
1.257 djm 1317: /* Ignore ProxyCommand if ProxyJump already specified */
1318: if (options->jump_host != NULL)
1319: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1320: parse_command:
1.356 djm 1321: if (str == NULL) {
1.344 djm 1322: error("%.200s line %d: Missing argument.",
1323: filename, linenum);
1.356 djm 1324: goto out;
1.344 djm 1325: }
1.356 djm 1326: len = strspn(str, WHITESPACE "=");
1.17 markus 1327: if (*activep && *charptr == NULL)
1.356 djm 1328: *charptr = xstrdup(str + len);
1329: argv_consume(&ac);
1330: break;
1.17 markus 1331:
1.257 djm 1332: case oProxyJump:
1.356 djm 1333: if (str == NULL) {
1.344 djm 1334: error("%.200s line %d: Missing argument.",
1.257 djm 1335: filename, linenum);
1.356 djm 1336: goto out;
1.257 djm 1337: }
1.356 djm 1338: len = strspn(str, WHITESPACE "=");
1339: /* XXX use argv? */
1340: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1341: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1342: filename, linenum, str + len);
1343: goto out;
1.257 djm 1344: }
1.356 djm 1345: argv_consume(&ac);
1346: break;
1.257 djm 1347:
1.17 markus 1348: case oPort:
1.356 djm 1349: arg = argv_next(&ac, &av);
1.344 djm 1350: if (!arg || *arg == '\0') {
1351: error("%.200s line %d: Missing argument.",
1.300 naddy 1352: filename, linenum);
1.356 djm 1353: goto out;
1.344 djm 1354: }
1.300 naddy 1355: value = a2port(arg);
1.344 djm 1356: if (value <= 0) {
1357: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1358: filename, linenum, arg);
1.356 djm 1359: goto out;
1.344 djm 1360: }
1.300 naddy 1361: if (*activep && options->port == -1)
1362: options->port = value;
1363: break;
1364:
1365: case oConnectionAttempts:
1366: intptr = &options->connection_attempts;
1.17 markus 1367: parse_int:
1.356 djm 1368: arg = argv_next(&ac, &av);
1.344 djm 1369: if ((errstr = atoi_err(arg, &value)) != NULL) {
1370: error("%s line %d: integer value %s.",
1.281 dtucker 1371: filename, linenum, errstr);
1.356 djm 1372: goto out;
1.344 djm 1373: }
1.17 markus 1374: if (*activep && *intptr == -1)
1375: *intptr = value;
1376: break;
1377:
1.25 markus 1378: case oCiphers:
1.356 djm 1379: arg = argv_next(&ac, &av);
1.344 djm 1380: if (!arg || *arg == '\0') {
1381: error("%.200s line %d: Missing argument.",
1382: filename, linenum);
1.356 djm 1383: goto out;
1.344 djm 1384: }
1.309 naddy 1385: if (*arg != '-' &&
1.344 djm 1386: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1387: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1388: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1389: goto out;
1.344 djm 1390: }
1.25 markus 1391: if (*activep && options->ciphers == NULL)
1.38 provos 1392: options->ciphers = xstrdup(arg);
1.25 markus 1393: break;
1394:
1.62 markus 1395: case oMacs:
1.356 djm 1396: arg = argv_next(&ac, &av);
1.344 djm 1397: if (!arg || *arg == '\0') {
1398: error("%.200s line %d: Missing argument.",
1399: filename, linenum);
1.356 djm 1400: goto out;
1.344 djm 1401: }
1.309 naddy 1402: if (*arg != '-' &&
1.344 djm 1403: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1404: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1405: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1406: goto out;
1.344 djm 1407: }
1.62 markus 1408: if (*activep && options->macs == NULL)
1409: options->macs = xstrdup(arg);
1410: break;
1411:
1.189 djm 1412: case oKexAlgorithms:
1.356 djm 1413: arg = argv_next(&ac, &av);
1.344 djm 1414: if (!arg || *arg == '\0') {
1415: error("%.200s line %d: Missing argument.",
1.189 djm 1416: filename, linenum);
1.356 djm 1417: goto out;
1.344 djm 1418: }
1.268 djm 1419: if (*arg != '-' &&
1.309 naddy 1420: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1421: arg + 1 : arg)) {
1422: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1423: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1424: goto out;
1.344 djm 1425: }
1.189 djm 1426: if (*activep && options->kex_algorithms == NULL)
1427: options->kex_algorithms = xstrdup(arg);
1428: break;
1429:
1.76 markus 1430: case oHostKeyAlgorithms:
1.238 markus 1431: charptr = &options->hostkeyalgorithms;
1.349 dtucker 1432: parse_pubkey_algos:
1.356 djm 1433: arg = argv_next(&ac, &av);
1.344 djm 1434: if (!arg || *arg == '\0') {
1435: error("%.200s line %d: Missing argument.",
1.238 markus 1436: filename, linenum);
1.356 djm 1437: goto out;
1.344 djm 1438: }
1.268 djm 1439: if (*arg != '-' &&
1.309 naddy 1440: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.344 djm 1441: arg + 1 : arg, 1)) {
1442: error("%s line %d: Bad key types '%s'.",
1443: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1444: goto out;
1.344 djm 1445: }
1.238 markus 1446: if (*activep && *charptr == NULL)
1447: *charptr = xstrdup(arg);
1.76 markus 1448: break;
1449:
1.298 djm 1450: case oCASignatureAlgorithms:
1451: charptr = &options->ca_sign_algorithms;
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;
1.356 djm 1558: arg = argv_next(&ac, &av);
1.351 markus 1559: if (!arg || *arg == '\0')
1560: fatal("%s line %d: missing %s specification",
1561: filename, linenum, lookup_opcode_name(opcode));
1562: uvalue = *uintptr; /* modified later */
1563: if (strcmp(arg, "any") == 0 || strcmp(arg, "none") == 0) {
1564: if (*activep && uvalue == 0) {
1565: *uintptr = 1;
1566: *cppptr = xcalloc(1, sizeof(**cppptr));
1567: (*cppptr)[0] = xstrdup(arg);
1568: }
1569: break;
1570: }
1.356 djm 1571: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1572: arg2 = xstrdup(arg);
1.366 ! dtucker 1573: p = hpdelim(&arg);
! 1574: if (p == NULL) {
1.351 markus 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 ||
1585: (strcmp(arg, "*") != 0 && a2port(arg) <= 0)) {
1586: fatal("%s line %d: bad port number in %s",
1587: filename, linenum,
1588: lookup_opcode_name(opcode));
1589: }
1590: if (*activep && uvalue == 0) {
1591: opt_array_append(filename, linenum,
1592: lookup_opcode_name(opcode),
1593: cppptr, uintptr, arg2);
1594: }
1595: free(arg2);
1596: }
1597: break;
1598:
1.90 stevesk 1599: case oClearAllForwardings:
1600: intptr = &options->clear_forwardings;
1601: goto parse_flag;
1602:
1.17 markus 1603: case oHost:
1.344 djm 1604: if (cmdline) {
1605: error("Host directive not supported as a command-line "
1.206 djm 1606: "option");
1.356 djm 1607: goto out;
1.344 djm 1608: }
1.17 markus 1609: *activep = 0;
1.191 djm 1610: arg2 = NULL;
1.356 djm 1611: while ((arg = argv_next(&ac, &av)) != NULL) {
1612: if (*arg == '\0') {
1613: error("%s line %d: keyword %s empty argument",
1614: filename, linenum, keyword);
1615: goto out;
1616: }
1617: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1618: argv_consume(&ac);
1.252 djm 1619: break;
1.356 djm 1620: }
1.191 djm 1621: negated = *arg == '!';
1622: if (negated)
1623: arg++;
1.38 provos 1624: if (match_pattern(host, arg)) {
1.191 djm 1625: if (negated) {
1626: debug("%.200s line %d: Skipping Host "
1627: "block because of negated match "
1628: "for %.100s", filename, linenum,
1629: arg);
1630: *activep = 0;
1.356 djm 1631: argv_consume(&ac);
1.191 djm 1632: break;
1633: }
1634: if (!*activep)
1635: arg2 = arg; /* logged below */
1.17 markus 1636: *activep = 1;
1637: }
1.191 djm 1638: }
1639: if (*activep)
1640: debug("%.200s line %d: Applying options for %.100s",
1641: filename, linenum, arg2);
1.356 djm 1642: break;
1.17 markus 1643:
1.206 djm 1644: case oMatch:
1.344 djm 1645: if (cmdline) {
1646: error("Host directive not supported as a command-line "
1.206 djm 1647: "option");
1.356 djm 1648: goto out;
1.344 djm 1649: }
1.356 djm 1650: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1651: flags & SSHCONF_FINAL, want_final_pass,
1652: filename, linenum);
1.344 djm 1653: if (value < 0) {
1654: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1655: linenum);
1.356 djm 1656: goto out;
1.344 djm 1657: }
1.252 djm 1658: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1659: /*
1660: * If match_cfg_line() didn't consume all its arguments then
1661: * arrange for the extra arguments check below to fail.
1662: */
1663:
1664: if (str == NULL || *str == '\0')
1665: argv_consume(&ac);
1.206 djm 1666: break;
1667:
1.17 markus 1668: case oEscapeChar:
1669: intptr = &options->escape_char;
1.356 djm 1670: arg = argv_next(&ac, &av);
1.344 djm 1671: if (!arg || *arg == '\0') {
1672: error("%.200s line %d: Missing argument.",
1673: filename, linenum);
1.356 djm 1674: goto out;
1.344 djm 1675: }
1.236 djm 1676: if (strcmp(arg, "none") == 0)
1677: value = SSH_ESCAPECHAR_NONE;
1678: else if (arg[1] == '\0')
1679: value = (u_char) arg[0];
1680: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1681: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1682: value = (u_char) arg[1] & 31;
1.17 markus 1683: else {
1.344 djm 1684: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1685: filename, linenum);
1.356 djm 1686: goto out;
1.17 markus 1687: }
1688: if (*activep && *intptr == -1)
1689: *intptr = value;
1.112 djm 1690: break;
1691:
1692: case oAddressFamily:
1.114 djm 1693: intptr = &options->address_family;
1.207 djm 1694: multistate_ptr = multistate_addressfamily;
1695: goto parse_multistate;
1.17 markus 1696:
1.101 markus 1697: case oEnableSSHKeysign:
1698: intptr = &options->enable_ssh_keysign;
1699: goto parse_flag;
1700:
1.128 markus 1701: case oIdentitiesOnly:
1702: intptr = &options->identities_only;
1703: goto parse_flag;
1704:
1.127 markus 1705: case oServerAliveInterval:
1706: intptr = &options->server_alive_interval;
1707: goto parse_time;
1708:
1709: case oServerAliveCountMax:
1710: intptr = &options->server_alive_count_max;
1711: goto parse_int;
1712:
1.130 djm 1713: case oSendEnv:
1.356 djm 1714: while ((arg = argv_next(&ac, &av)) != NULL) {
1715: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1716: error("%s line %d: Invalid environment name.",
1.130 djm 1717: filename, linenum);
1.356 djm 1718: goto out;
1.344 djm 1719: }
1.137 djm 1720: if (!*activep)
1721: continue;
1.286 djm 1722: if (*arg == '-') {
1723: /* Removing an env var */
1724: rm_env(options, arg, filename, linenum);
1725: continue;
1726: } else {
1727: /* Adding an env var */
1.344 djm 1728: if (options->num_send_env >= INT_MAX) {
1729: error("%s line %d: too many send env.",
1.286 djm 1730: filename, linenum);
1.356 djm 1731: goto out;
1.344 djm 1732: }
1.290 djm 1733: options->send_env = xrecallocarray(
1734: options->send_env, options->num_send_env,
1.291 djm 1735: options->num_send_env + 1,
1.290 djm 1736: sizeof(*options->send_env));
1.286 djm 1737: options->send_env[options->num_send_env++] =
1738: xstrdup(arg);
1739: }
1.130 djm 1740: }
1741: break;
1742:
1.290 djm 1743: case oSetEnv:
1744: value = options->num_setenv;
1.356 djm 1745: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1746: if (strchr(arg, '=') == NULL) {
1747: error("%s line %d: Invalid SetEnv.",
1.290 djm 1748: filename, linenum);
1.356 djm 1749: goto out;
1.344 djm 1750: }
1.290 djm 1751: if (!*activep || value != 0)
1752: continue;
1753: /* Adding a setenv var */
1.344 djm 1754: if (options->num_setenv >= INT_MAX) {
1755: error("%s line %d: too many SetEnv.",
1.290 djm 1756: filename, linenum);
1.356 djm 1757: goto out;
1.344 djm 1758: }
1.290 djm 1759: options->setenv = xrecallocarray(
1760: options->setenv, options->num_setenv,
1761: options->num_setenv + 1, sizeof(*options->setenv));
1762: options->setenv[options->num_setenv++] = xstrdup(arg);
1763: }
1764: break;
1765:
1.132 djm 1766: case oControlPath:
1767: charptr = &options->control_path;
1768: goto parse_string;
1769:
1770: case oControlMaster:
1771: intptr = &options->control_master;
1.207 djm 1772: multistate_ptr = multistate_controlmaster;
1773: goto parse_multistate;
1.132 djm 1774:
1.187 djm 1775: case oControlPersist:
1776: /* no/false/yes/true, or a time spec */
1777: intptr = &options->control_persist;
1.356 djm 1778: arg = argv_next(&ac, &av);
1.344 djm 1779: if (!arg || *arg == '\0') {
1780: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1781: " argument.", filename, linenum);
1.356 djm 1782: goto out;
1.344 djm 1783: }
1.187 djm 1784: value = 0;
1785: value2 = 0; /* timeout */
1786: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1787: value = 0;
1788: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1789: value = 1;
1790: else if ((value2 = convtime(arg)) >= 0)
1791: value = 1;
1.344 djm 1792: else {
1793: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1794: filename, linenum);
1.356 djm 1795: goto out;
1.344 djm 1796: }
1.187 djm 1797: if (*activep && *intptr == -1) {
1798: *intptr = value;
1799: options->control_persist_timeout = value2;
1800: }
1801: break;
1802:
1.136 djm 1803: case oHashKnownHosts:
1804: intptr = &options->hash_known_hosts;
1805: goto parse_flag;
1806:
1.144 reyk 1807: case oTunnel:
1808: intptr = &options->tun_open;
1.207 djm 1809: multistate_ptr = multistate_tunnel;
1810: goto parse_multistate;
1.144 reyk 1811:
1812: case oTunnelDevice:
1.356 djm 1813: arg = argv_next(&ac, &av);
1.344 djm 1814: if (!arg || *arg == '\0') {
1815: error("%.200s line %d: Missing argument.",
1816: filename, linenum);
1.356 djm 1817: goto out;
1.344 djm 1818: }
1.144 reyk 1819: value = a2tun(arg, &value2);
1.344 djm 1820: if (value == SSH_TUNID_ERR) {
1821: error("%.200s line %d: Bad tun device.",
1822: filename, linenum);
1.356 djm 1823: goto out;
1.344 djm 1824: }
1.355 dtucker 1825: if (*activep && options->tun_local == -1) {
1.144 reyk 1826: options->tun_local = value;
1827: options->tun_remote = value2;
1828: }
1829: break;
1830:
1831: case oLocalCommand:
1832: charptr = &options->local_command;
1833: goto parse_command;
1834:
1835: case oPermitLocalCommand:
1836: intptr = &options->permit_local_command;
1837: goto parse_flag;
1838:
1.277 bluhm 1839: case oRemoteCommand:
1840: charptr = &options->remote_command;
1841: goto parse_command;
1842:
1.167 grunk 1843: case oVisualHostKey:
1844: intptr = &options->visual_host_key;
1845: goto parse_flag;
1846:
1.252 djm 1847: case oInclude:
1.344 djm 1848: if (cmdline) {
1849: error("Include directive not supported as a "
1.252 djm 1850: "command-line option");
1.356 djm 1851: goto out;
1.344 djm 1852: }
1.252 djm 1853: value = 0;
1.356 djm 1854: while ((arg = argv_next(&ac, &av)) != NULL) {
1855: if (*arg == '\0') {
1856: error("%s line %d: keyword %s empty argument",
1857: filename, linenum, keyword);
1858: goto out;
1859: }
1.252 djm 1860: /*
1861: * Ensure all paths are anchored. User configuration
1862: * files may begin with '~/' but system configurations
1863: * must not. If the path is relative, then treat it
1864: * as living in ~/.ssh for user configurations or
1865: * /etc/ssh for system ones.
1866: */
1.344 djm 1867: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1868: error("%.200s line %d: bad include path %s.",
1.252 djm 1869: filename, linenum, arg);
1.356 djm 1870: goto out;
1.344 djm 1871: }
1.301 djm 1872: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1873: xasprintf(&arg2, "%s/%s",
1874: (flags & SSHCONF_USERCONF) ?
1875: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1876: } else
1877: arg2 = xstrdup(arg);
1878: memset(&gl, 0, sizeof(gl));
1879: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1880: if (r == GLOB_NOMATCH) {
1881: debug("%.200s line %d: include %s matched no "
1882: "files",filename, linenum, arg2);
1.269 dtucker 1883: free(arg2);
1.252 djm 1884: continue;
1.344 djm 1885: } else if (r != 0) {
1886: error("%.200s line %d: glob failed for %s.",
1.252 djm 1887: filename, linenum, arg2);
1.356 djm 1888: goto out;
1.344 djm 1889: }
1.252 djm 1890: free(arg2);
1891: oactive = *activep;
1.313 deraadt 1892: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1893: debug3("%.200s line %d: Including file %s "
1894: "depth %d%s", filename, linenum,
1895: gl.gl_pathv[i], depth,
1896: oactive ? "" : " (parse only)");
1897: r = read_config_file_depth(gl.gl_pathv[i],
1898: pw, host, original_host, options,
1899: flags | SSHCONF_CHECKPERM |
1900: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1901: activep, want_final_pass, depth + 1);
1.264 djm 1902: if (r != 1 && errno != ENOENT) {
1.344 djm 1903: error("Can't open user config file "
1.263 djm 1904: "%.100s: %.100s", gl.gl_pathv[i],
1905: strerror(errno));
1.344 djm 1906: globfree(&gl);
1.356 djm 1907: goto out;
1.263 djm 1908: }
1.252 djm 1909: /*
1910: * don't let Match in includes clobber the
1911: * containing file's Match state.
1912: */
1913: *activep = oactive;
1914: if (r != 1)
1915: value = -1;
1916: }
1917: globfree(&gl);
1918: }
1919: if (value != 0)
1.356 djm 1920: ret = value;
1.252 djm 1921: break;
1922:
1.190 djm 1923: case oIPQoS:
1.356 djm 1924: arg = argv_next(&ac, &av);
1.344 djm 1925: if ((value = parse_ipqos(arg)) == -1) {
1926: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1927: filename, linenum, arg);
1.356 djm 1928: goto out;
1.344 djm 1929: }
1.356 djm 1930: arg = argv_next(&ac, &av);
1.190 djm 1931: if (arg == NULL)
1932: value2 = value;
1.344 djm 1933: else if ((value2 = parse_ipqos(arg)) == -1) {
1934: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1935: filename, linenum, arg);
1.356 djm 1936: goto out;
1.344 djm 1937: }
1.355 dtucker 1938: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 1939: options->ip_qos_interactive = value;
1940: options->ip_qos_bulk = value2;
1941: }
1942: break;
1943:
1.192 djm 1944: case oRequestTTY:
1945: intptr = &options->request_tty;
1.207 djm 1946: multistate_ptr = multistate_requesttty;
1947: goto parse_multistate;
1.192 djm 1948:
1.359 djm 1949: case oSessionType:
1950: intptr = &options->session_type;
1951: multistate_ptr = multistate_sessiontype;
1952: goto parse_multistate;
1953:
1.360 djm 1954: case oStdinNull:
1955: intptr = &options->stdin_null;
1956: goto parse_flag;
1957:
1.361 djm 1958: case oForkAfterAuthentication:
1959: intptr = &options->fork_after_authentication;
1960: goto parse_flag;
1961:
1.199 djm 1962: case oIgnoreUnknown:
1963: charptr = &options->ignored_unknown;
1964: goto parse_string;
1965:
1.205 djm 1966: case oProxyUseFdpass:
1967: intptr = &options->proxy_use_fdpass;
1968: goto parse_flag;
1969:
1.208 djm 1970: case oCanonicalDomains:
1971: value = options->num_canonical_domains != 0;
1.356 djm 1972: i = 0;
1973: while ((arg = argv_next(&ac, &av)) != NULL) {
1974: if (*arg == '\0') {
1975: error("%s line %d: keyword %s empty argument",
1976: filename, linenum, keyword);
1977: goto out;
1978: }
1979: /* Allow "none" only in first position */
1980: if (strcasecmp(arg, "none") == 0) {
1981: if (i > 0 || ac > 0) {
1982: error("%s line %d: keyword %s \"none\" "
1983: "argument must appear alone.",
1984: filename, linenum, keyword);
1985: goto out;
1986: }
1987: }
1988: i++;
1.280 millert 1989: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 1990: error("%s line %d: %s", filename, linenum,
1.280 millert 1991: errstr);
1.356 djm 1992: goto out;
1.280 millert 1993: }
1.208 djm 1994: if (!*activep || value)
1995: continue;
1.344 djm 1996: if (options->num_canonical_domains >=
1997: MAX_CANON_DOMAINS) {
1998: error("%s line %d: too many hostname suffixes.",
1.208 djm 1999: filename, linenum);
1.356 djm 2000: goto out;
1.344 djm 2001: }
1.208 djm 2002: options->canonical_domains[
2003: options->num_canonical_domains++] = xstrdup(arg);
2004: }
2005: break;
2006:
1.209 djm 2007: case oCanonicalizePermittedCNAMEs:
1.208 djm 2008: value = options->num_permitted_cnames != 0;
1.362 djm 2009: i = 0;
1.356 djm 2010: while ((arg = argv_next(&ac, &av)) != NULL) {
1.362 djm 2011: /*
2012: * Either 'none' (only in first position), '*' for
2013: * everything or 'list:list'
2014: */
2015: if (strcasecmp(arg, "none") == 0) {
2016: if (i > 0 || ac > 0) {
2017: error("%s line %d: keyword %s \"none\" "
2018: "argument must appear alone.",
2019: filename, linenum, keyword);
2020: goto out;
2021: }
2022: arg2 = "";
2023: } else if (strcmp(arg, "*") == 0) {
1.208 djm 2024: arg2 = arg;
1.362 djm 2025: } else {
1.208 djm 2026: lowercase(arg);
2027: if ((arg2 = strchr(arg, ':')) == NULL ||
2028: arg2[1] == '\0') {
1.344 djm 2029: error("%s line %d: "
1.208 djm 2030: "Invalid permitted CNAME \"%s\"",
2031: filename, linenum, arg);
1.356 djm 2032: goto out;
1.208 djm 2033: }
2034: *arg2 = '\0';
2035: arg2++;
2036: }
1.362 djm 2037: i++;
1.208 djm 2038: if (!*activep || value)
2039: continue;
1.344 djm 2040: if (options->num_permitted_cnames >=
2041: MAX_CANON_DOMAINS) {
2042: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 2043: filename, linenum);
1.356 djm 2044: goto out;
1.344 djm 2045: }
1.208 djm 2046: cname = options->permitted_cnames +
2047: options->num_permitted_cnames++;
2048: cname->source_list = xstrdup(arg);
2049: cname->target_list = xstrdup(arg2);
2050: }
2051: break;
2052:
1.209 djm 2053: case oCanonicalizeHostname:
2054: intptr = &options->canonicalize_hostname;
2055: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2056: goto parse_multistate;
2057:
1.209 djm 2058: case oCanonicalizeMaxDots:
2059: intptr = &options->canonicalize_max_dots;
1.208 djm 2060: goto parse_int;
2061:
1.209 djm 2062: case oCanonicalizeFallbackLocal:
2063: intptr = &options->canonicalize_fallback_local;
1.208 djm 2064: goto parse_flag;
2065:
1.220 millert 2066: case oStreamLocalBindMask:
1.356 djm 2067: arg = argv_next(&ac, &av);
1.344 djm 2068: if (!arg || *arg == '\0') {
2069: error("%.200s line %d: Missing StreamLocalBindMask "
2070: "argument.", filename, linenum);
1.356 djm 2071: goto out;
1.344 djm 2072: }
1.220 millert 2073: /* Parse mode in octal format */
2074: value = strtol(arg, &endofnumber, 8);
1.344 djm 2075: if (arg == endofnumber || value < 0 || value > 0777) {
2076: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2077: goto out;
1.344 djm 2078: }
1.220 millert 2079: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2080: break;
2081:
2082: case oStreamLocalBindUnlink:
2083: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2084: goto parse_flag;
2085:
1.223 djm 2086: case oRevokedHostKeys:
2087: charptr = &options->revoked_host_keys;
2088: goto parse_string;
2089:
1.224 djm 2090: case oFingerprintHash:
1.225 djm 2091: intptr = &options->fingerprint_hash;
1.356 djm 2092: arg = argv_next(&ac, &av);
1.344 djm 2093: if (!arg || *arg == '\0') {
2094: error("%.200s line %d: Missing argument.",
1.224 djm 2095: filename, linenum);
1.356 djm 2096: goto out;
1.344 djm 2097: }
2098: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2099: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2100: filename, linenum, arg);
1.356 djm 2101: goto out;
1.344 djm 2102: }
1.225 djm 2103: if (*activep && *intptr == -1)
2104: *intptr = value;
1.224 djm 2105: break;
2106:
1.229 djm 2107: case oUpdateHostkeys:
2108: intptr = &options->update_hostkeys;
1.232 djm 2109: multistate_ptr = multistate_yesnoask;
2110: goto parse_multistate;
1.229 djm 2111:
1.350 dtucker 2112: case oHostbasedAcceptedAlgorithms:
2113: charptr = &options->hostbased_accepted_algos;
1.349 dtucker 2114: goto parse_pubkey_algos;
1.238 markus 2115:
1.349 dtucker 2116: case oPubkeyAcceptedAlgorithms:
2117: charptr = &options->pubkey_accepted_algos;
2118: goto parse_pubkey_algos;
1.230 djm 2119:
1.246 jcs 2120: case oAddKeysToAgent:
1.356 djm 2121: arg = argv_next(&ac, &av);
2122: arg2 = argv_next(&ac, &av);
1.334 djm 2123: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2124: multistate_yesnoaskconfirm);
1.334 djm 2125: value2 = 0; /* unlimited lifespan by default */
2126: if (value == 3 && arg2 != NULL) {
2127: /* allow "AddKeysToAgent confirm 5m" */
1.344 djm 2128: if ((value2 = convtime(arg2)) == -1 ||
2129: value2 > INT_MAX) {
2130: error("%s line %d: invalid time value.",
1.334 djm 2131: filename, linenum);
1.356 djm 2132: goto out;
1.344 djm 2133: }
1.334 djm 2134: } else if (value == -1 && arg2 == NULL) {
1.344 djm 2135: if ((value2 = convtime(arg)) == -1 ||
2136: value2 > INT_MAX) {
2137: error("%s line %d: unsupported option",
1.334 djm 2138: filename, linenum);
1.356 djm 2139: goto out;
1.344 djm 2140: }
1.334 djm 2141: value = 1; /* yes */
2142: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2143: error("%s line %d: unsupported option",
1.334 djm 2144: filename, linenum);
1.356 djm 2145: goto out;
1.334 djm 2146: }
2147: if (*activep && options->add_keys_to_agent == -1) {
2148: options->add_keys_to_agent = value;
2149: options->add_keys_to_agent_lifespan = value2;
2150: }
2151: break;
1.246 jcs 2152:
1.253 markus 2153: case oIdentityAgent:
2154: charptr = &options->identity_agent;
1.356 djm 2155: arg = argv_next(&ac, &av);
1.344 djm 2156: if (!arg || *arg == '\0') {
2157: error("%.200s line %d: Missing argument.",
1.299 djm 2158: filename, linenum);
1.356 djm 2159: goto out;
1.344 djm 2160: }
1.319 djm 2161: parse_agent_path:
1.299 djm 2162: /* Extra validation if the string represents an env var. */
1.344 djm 2163: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2164: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2165: "%s.", filename, linenum, arg);
1.356 djm 2166: goto out;
1.344 djm 2167: }
1.331 dtucker 2168: free(arg2);
2169: /* check for legacy environment format */
1.344 djm 2170: if (arg[0] == '$' && arg[1] != '{' &&
2171: !valid_env_name(arg + 1)) {
2172: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2173: filename, linenum, arg);
1.356 djm 2174: goto out;
1.299 djm 2175: }
2176: if (*activep && *charptr == NULL)
2177: *charptr = xstrdup(arg);
2178: break;
1.253 markus 2179:
1.96 markus 2180: case oDeprecated:
1.98 markus 2181: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2182: filename, linenum, keyword);
1.356 djm 2183: argv_consume(&ac);
2184: break;
1.96 markus 2185:
1.110 jakob 2186: case oUnsupported:
2187: error("%s line %d: Unsupported option \"%s\"",
2188: filename, linenum, keyword);
1.356 djm 2189: argv_consume(&ac);
2190: break;
1.110 jakob 2191:
1.17 markus 2192: default:
1.344 djm 2193: error("%s line %d: Unimplemented opcode %d",
2194: filename, linenum, opcode);
1.356 djm 2195: goto out;
1.17 markus 2196: }
2197:
2198: /* Check that there is no garbage at end of line. */
1.356 djm 2199: if (ac > 0) {
2200: error("%.200s line %d: keyword %s extra arguments "
2201: "at end of line", filename, linenum, keyword);
2202: goto out;
1.39 ho 2203: }
1.356 djm 2204:
2205: /* success */
2206: ret = 0;
2207: out:
2208: argv_free(oav, oac);
2209: return ret;
1.1 deraadt 2210: }
2211:
1.19 markus 2212: /*
2213: * Reads the config file and modifies the options accordingly. Options
2214: * should already be initialized before this call. This never returns if
1.89 stevesk 2215: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2216: */
1.89 stevesk 2217: int
1.206 djm 2218: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2219: const char *original_host, Options *options, int flags,
2220: int *want_final_pass)
1.1 deraadt 2221: {
1.252 djm 2222: int active = 1;
2223:
2224: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2225: options, flags, &active, want_final_pass, 0);
1.252 djm 2226: }
2227:
2228: #define READCONF_MAX_DEPTH 16
2229: static int
2230: read_config_file_depth(const char *filename, struct passwd *pw,
2231: const char *host, const char *original_host, Options *options,
1.302 djm 2232: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2233: {
1.17 markus 2234: FILE *f;
1.356 djm 2235: char *line = NULL;
1.289 markus 2236: size_t linesize = 0;
1.252 djm 2237: int linenum;
1.17 markus 2238: int bad_options = 0;
2239:
1.252 djm 2240: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2241: fatal("Too many recursive configuration includes");
2242:
1.129 djm 2243: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2244: return 0;
1.129 djm 2245:
1.196 dtucker 2246: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2247: struct stat sb;
1.134 deraadt 2248:
1.131 dtucker 2249: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2250: fatal("fstat %s: %s", filename, strerror(errno));
2251: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2252: (sb.st_mode & 022) != 0))
1.129 djm 2253: fatal("Bad owner or permissions on %s", filename);
2254: }
1.17 markus 2255:
2256: debug("Reading configuration data %.200s", filename);
2257:
1.19 markus 2258: /*
2259: * Mark that we are now processing the options. This flag is turned
2260: * on/off by Host specifications.
2261: */
1.17 markus 2262: linenum = 0;
1.289 markus 2263: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2264: /* Update line number counter. */
2265: linenum++;
1.343 dtucker 2266: /*
2267: * Trim out comments and strip whitespace.
2268: * NB - preserve newlines, they are needed to reproduce
2269: * line numbers later for error messages.
2270: */
1.252 djm 2271: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2272: line, filename, linenum, activep, flags, want_final_pass,
2273: depth) != 0)
1.17 markus 2274: bad_options++;
2275: }
1.289 markus 2276: free(line);
1.17 markus 2277: fclose(f);
2278: if (bad_options > 0)
1.64 millert 2279: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2280: filename, bad_options);
1.89 stevesk 2281: return 1;
1.1 deraadt 2282: }
2283:
1.218 djm 2284: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2285: int
2286: option_clear_or_none(const char *o)
2287: {
2288: return o == NULL || strcasecmp(o, "none") == 0;
2289: }
2290:
1.19 markus 2291: /*
1.362 djm 2292: * Returns 1 if CanonicalizePermittedCNAMEs have been specified, 0 otherwise.
2293: * Allowed to be called on non-final configuration.
2294: */
2295: int
2296: config_has_permitted_cnames(Options *options)
2297: {
2298: if (options->num_permitted_cnames == 1 &&
2299: strcasecmp(options->permitted_cnames[0].source_list, "none") == 0 &&
2300: strcmp(options->permitted_cnames[0].target_list, "") == 0)
2301: return 0;
2302: return options->num_permitted_cnames > 0;
2303: }
2304:
2305: /*
1.19 markus 2306: * Initializes options to special values that indicate that they have not yet
2307: * been set. Read_config_file will only set options with this value. Options
2308: * are processed in the following order: command line, user config file,
2309: * system config file. Last, fill_default_options is called.
2310: */
1.1 deraadt 2311:
1.26 markus 2312: void
1.17 markus 2313: initialize_options(Options * options)
1.1 deraadt 2314: {
1.17 markus 2315: memset(options, 'X', sizeof(*options));
2316: options->forward_agent = -1;
1.319 djm 2317: options->forward_agent_sock_path = NULL;
1.17 markus 2318: options->forward_x11 = -1;
1.123 markus 2319: options->forward_x11_trusted = -1;
1.186 djm 2320: options->forward_x11_timeout = -1;
1.255 dtucker 2321: options->stdio_forward_host = NULL;
2322: options->stdio_forward_port = 0;
1.256 dtucker 2323: options->clear_forwardings = -1;
1.153 markus 2324: options->exit_on_forward_failure = -1;
1.34 markus 2325: options->xauth_location = NULL;
1.220 millert 2326: options->fwd_opts.gateway_ports = -1;
2327: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2328: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2329: options->pubkey_authentication = -1;
1.118 markus 2330: options->gss_authentication = -1;
2331: options->gss_deleg_creds = -1;
1.17 markus 2332: options->password_authentication = -1;
1.48 markus 2333: options->kbd_interactive_authentication = -1;
2334: options->kbd_interactive_devices = NULL;
1.72 markus 2335: options->hostbased_authentication = -1;
1.17 markus 2336: options->batch_mode = -1;
2337: options->check_host_ip = -1;
2338: options->strict_host_key_checking = -1;
2339: options->compression = -1;
1.126 markus 2340: options->tcp_keep_alive = -1;
1.17 markus 2341: options->port = -1;
1.114 djm 2342: options->address_family = -1;
1.17 markus 2343: options->connection_attempts = -1;
1.111 djm 2344: options->connection_timeout = -1;
1.17 markus 2345: options->number_of_password_prompts = -1;
1.25 markus 2346: options->ciphers = NULL;
1.62 markus 2347: options->macs = NULL;
1.189 djm 2348: options->kex_algorithms = NULL;
1.76 markus 2349: options->hostkeyalgorithms = NULL;
1.298 djm 2350: options->ca_sign_algorithms = NULL;
1.17 markus 2351: options->num_identity_files = 0;
1.344 djm 2352: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2353: options->num_certificate_files = 0;
1.344 djm 2354: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2355: options->hostname = NULL;
1.52 markus 2356: options->host_key_alias = NULL;
1.17 markus 2357: options->proxy_command = NULL;
1.257 djm 2358: options->jump_user = NULL;
2359: options->jump_host = NULL;
2360: options->jump_port = -1;
2361: options->jump_extra = NULL;
1.17 markus 2362: options->user = NULL;
2363: options->escape_char = -1;
1.193 djm 2364: options->num_system_hostfiles = 0;
2365: options->num_user_hostfiles = 0;
1.185 djm 2366: options->local_forwards = NULL;
1.17 markus 2367: options->num_local_forwards = 0;
1.185 djm 2368: options->remote_forwards = NULL;
1.17 markus 2369: options->num_remote_forwards = 0;
1.351 markus 2370: options->permitted_remote_opens = NULL;
2371: options->num_permitted_remote_opens = 0;
1.271 dtucker 2372: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2373: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2374: options->num_log_verbose = 0;
2375: options->log_verbose = NULL;
1.67 markus 2376: options->preferred_authentications = NULL;
1.77 markus 2377: options->bind_address = NULL;
1.282 djm 2378: options->bind_interface = NULL;
1.183 markus 2379: options->pkcs11_provider = NULL;
1.310 djm 2380: options->sk_provider = NULL;
1.101 markus 2381: options->enable_ssh_keysign = - 1;
1.91 markus 2382: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2383: options->identities_only = - 1;
1.105 markus 2384: options->rekey_limit = - 1;
1.198 dtucker 2385: options->rekey_interval = -1;
1.107 jakob 2386: options->verify_host_key_dns = -1;
1.127 markus 2387: options->server_alive_interval = -1;
2388: options->server_alive_count_max = -1;
1.290 djm 2389: options->send_env = NULL;
1.130 djm 2390: options->num_send_env = 0;
1.290 djm 2391: options->setenv = NULL;
2392: options->num_setenv = 0;
1.132 djm 2393: options->control_path = NULL;
2394: options->control_master = -1;
1.187 djm 2395: options->control_persist = -1;
2396: options->control_persist_timeout = 0;
1.136 djm 2397: options->hash_known_hosts = -1;
1.144 reyk 2398: options->tun_open = -1;
2399: options->tun_local = -1;
2400: options->tun_remote = -1;
2401: options->local_command = NULL;
2402: options->permit_local_command = -1;
1.277 bluhm 2403: options->remote_command = NULL;
1.246 jcs 2404: options->add_keys_to_agent = -1;
1.334 djm 2405: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2406: options->identity_agent = NULL;
1.167 grunk 2407: options->visual_host_key = -1;
1.190 djm 2408: options->ip_qos_interactive = -1;
2409: options->ip_qos_bulk = -1;
1.192 djm 2410: options->request_tty = -1;
1.359 djm 2411: options->session_type = -1;
1.360 djm 2412: options->stdin_null = -1;
1.361 djm 2413: options->fork_after_authentication = -1;
1.205 djm 2414: options->proxy_use_fdpass = -1;
1.199 djm 2415: options->ignored_unknown = NULL;
1.208 djm 2416: options->num_canonical_domains = 0;
2417: options->num_permitted_cnames = 0;
1.209 djm 2418: options->canonicalize_max_dots = -1;
2419: options->canonicalize_fallback_local = -1;
2420: options->canonicalize_hostname = -1;
1.223 djm 2421: options->revoked_host_keys = NULL;
1.224 djm 2422: options->fingerprint_hash = -1;
1.229 djm 2423: options->update_hostkeys = -1;
1.350 dtucker 2424: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2425: options->pubkey_accepted_algos = NULL;
1.346 djm 2426: options->known_hosts_command = NULL;
1.1 deraadt 2427: }
2428:
1.19 markus 2429: /*
1.218 djm 2430: * A petite version of fill_default_options() that just fills the options
2431: * needed for hostname canonicalization to proceed.
2432: */
2433: void
2434: fill_default_options_for_canonicalization(Options *options)
2435: {
2436: if (options->canonicalize_max_dots == -1)
2437: options->canonicalize_max_dots = 1;
2438: if (options->canonicalize_fallback_local == -1)
2439: options->canonicalize_fallback_local = 1;
2440: if (options->canonicalize_hostname == -1)
2441: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2442: }
2443:
2444: /*
1.19 markus 2445: * Called after processing other sources of option data, this fills those
2446: * options for which no value has been specified with their default values.
2447: */
1.344 djm 2448: int
1.17 markus 2449: fill_default_options(Options * options)
1.1 deraadt 2450: {
1.298 djm 2451: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2452: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2453: int ret = 0, r;
1.292 djm 2454:
1.17 markus 2455: if (options->forward_agent == -1)
1.33 markus 2456: options->forward_agent = 0;
1.17 markus 2457: if (options->forward_x11 == -1)
1.23 markus 2458: options->forward_x11 = 0;
1.123 markus 2459: if (options->forward_x11_trusted == -1)
2460: options->forward_x11_trusted = 0;
1.186 djm 2461: if (options->forward_x11_timeout == -1)
2462: options->forward_x11_timeout = 1200;
1.256 dtucker 2463: /*
2464: * stdio forwarding (-W) changes the default for these but we defer
2465: * setting the values so they can be overridden.
2466: */
1.153 markus 2467: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2468: options->exit_on_forward_failure =
2469: options->stdio_forward_host != NULL ? 1 : 0;
2470: if (options->clear_forwardings == -1)
2471: options->clear_forwardings =
2472: options->stdio_forward_host != NULL ? 1 : 0;
2473: if (options->clear_forwardings == 1)
2474: clear_forwardings(options);
2475:
1.34 markus 2476: if (options->xauth_location == NULL)
1.344 djm 2477: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2478: if (options->fwd_opts.gateway_ports == -1)
2479: options->fwd_opts.gateway_ports = 0;
2480: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2481: options->fwd_opts.streamlocal_bind_mask = 0177;
2482: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2483: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2484: if (options->pubkey_authentication == -1)
1.364 djm 2485: options->pubkey_authentication = SSH_PUBKEY_AUTH_ALL;
1.118 markus 2486: if (options->gss_authentication == -1)
1.122 markus 2487: options->gss_authentication = 0;
1.118 markus 2488: if (options->gss_deleg_creds == -1)
2489: options->gss_deleg_creds = 0;
1.17 markus 2490: if (options->password_authentication == -1)
2491: options->password_authentication = 1;
1.48 markus 2492: if (options->kbd_interactive_authentication == -1)
1.59 markus 2493: options->kbd_interactive_authentication = 1;
1.72 markus 2494: if (options->hostbased_authentication == -1)
2495: options->hostbased_authentication = 0;
1.17 markus 2496: if (options->batch_mode == -1)
2497: options->batch_mode = 0;
2498: if (options->check_host_ip == -1)
1.348 djm 2499: options->check_host_ip = 0;
1.17 markus 2500: if (options->strict_host_key_checking == -1)
1.278 djm 2501: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2502: if (options->compression == -1)
2503: options->compression = 0;
1.126 markus 2504: if (options->tcp_keep_alive == -1)
2505: options->tcp_keep_alive = 1;
1.17 markus 2506: if (options->port == -1)
2507: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2508: if (options->address_family == -1)
2509: options->address_family = AF_UNSPEC;
1.17 markus 2510: if (options->connection_attempts == -1)
1.84 markus 2511: options->connection_attempts = 1;
1.17 markus 2512: if (options->number_of_password_prompts == -1)
2513: options->number_of_password_prompts = 3;
1.76 markus 2514: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2515: if (options->add_keys_to_agent == -1) {
1.246 jcs 2516: options->add_keys_to_agent = 0;
1.334 djm 2517: options->add_keys_to_agent_lifespan = 0;
2518: }
1.17 markus 2519: if (options->num_identity_files == 0) {
1.273 djm 2520: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2521: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2522: add_identity_file(options, "~/",
1.310 djm 2523: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2524: add_identity_file(options, "~/",
1.273 djm 2525: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2526: add_identity_file(options, "~/",
2527: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2528: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.365 dtucker 2529: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
1.27 markus 2530: }
1.17 markus 2531: if (options->escape_char == -1)
2532: options->escape_char = '~';
1.193 djm 2533: if (options->num_system_hostfiles == 0) {
2534: options->system_hostfiles[options->num_system_hostfiles++] =
2535: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2536: options->system_hostfiles[options->num_system_hostfiles++] =
2537: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2538: }
1.336 djm 2539: if (options->update_hostkeys == -1) {
1.338 djm 2540: if (options->verify_host_key_dns <= 0 &&
2541: (options->num_user_hostfiles == 0 ||
1.336 djm 2542: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2543: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2544: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2545: else
1.325 djm 2546: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2547: }
1.193 djm 2548: if (options->num_user_hostfiles == 0) {
2549: options->user_hostfiles[options->num_user_hostfiles++] =
2550: xstrdup(_PATH_SSH_USER_HOSTFILE);
2551: options->user_hostfiles[options->num_user_hostfiles++] =
2552: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2553: }
1.95 markus 2554: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2555: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2556: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2557: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2558: if (options->no_host_authentication_for_localhost == - 1)
2559: options->no_host_authentication_for_localhost = 0;
1.128 markus 2560: if (options->identities_only == -1)
2561: options->identities_only = 0;
1.101 markus 2562: if (options->enable_ssh_keysign == -1)
2563: options->enable_ssh_keysign = 0;
1.105 markus 2564: if (options->rekey_limit == -1)
2565: options->rekey_limit = 0;
1.198 dtucker 2566: if (options->rekey_interval == -1)
2567: options->rekey_interval = 0;
1.107 jakob 2568: if (options->verify_host_key_dns == -1)
2569: options->verify_host_key_dns = 0;
1.127 markus 2570: if (options->server_alive_interval == -1)
2571: options->server_alive_interval = 0;
2572: if (options->server_alive_count_max == -1)
2573: options->server_alive_count_max = 3;
1.132 djm 2574: if (options->control_master == -1)
2575: options->control_master = 0;
1.187 djm 2576: if (options->control_persist == -1) {
2577: options->control_persist = 0;
2578: options->control_persist_timeout = 0;
2579: }
1.136 djm 2580: if (options->hash_known_hosts == -1)
2581: options->hash_known_hosts = 0;
1.144 reyk 2582: if (options->tun_open == -1)
1.145 reyk 2583: options->tun_open = SSH_TUNMODE_NO;
2584: if (options->tun_local == -1)
2585: options->tun_local = SSH_TUNID_ANY;
2586: if (options->tun_remote == -1)
2587: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2588: if (options->permit_local_command == -1)
2589: options->permit_local_command = 0;
1.167 grunk 2590: if (options->visual_host_key == -1)
2591: options->visual_host_key = 0;
1.190 djm 2592: if (options->ip_qos_interactive == -1)
1.284 job 2593: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2594: if (options->ip_qos_bulk == -1)
1.284 job 2595: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2596: if (options->request_tty == -1)
2597: options->request_tty = REQUEST_TTY_AUTO;
1.359 djm 2598: if (options->session_type == -1)
2599: options->session_type = SESSION_TYPE_DEFAULT;
1.360 djm 2600: if (options->stdin_null == -1)
2601: options->stdin_null = 0;
1.361 djm 2602: if (options->fork_after_authentication == -1)
2603: options->fork_after_authentication = 0;
1.205 djm 2604: if (options->proxy_use_fdpass == -1)
2605: options->proxy_use_fdpass = 0;
1.209 djm 2606: if (options->canonicalize_max_dots == -1)
2607: options->canonicalize_max_dots = 1;
2608: if (options->canonicalize_fallback_local == -1)
2609: options->canonicalize_fallback_local = 1;
2610: if (options->canonicalize_hostname == -1)
2611: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2612: if (options->fingerprint_hash == -1)
2613: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2614: if (options->sk_provider == NULL)
1.314 djm 2615: options->sk_provider = xstrdup("internal");
1.292 djm 2616:
2617: /* Expand KEX name lists */
2618: all_cipher = cipher_alg_list(',', 0);
2619: all_mac = mac_alg_list(',');
2620: all_kex = kex_alg_list(',');
2621: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2622: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2623: /* remove unsupported algos from default lists */
1.332 djm 2624: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2625: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2626: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2627: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2628: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2629: #define ASSEMBLE(what, defaults, all) \
2630: do { \
2631: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2632: defaults, all)) != 0) { \
2633: error_fr(r, "%s", #what); \
2634: goto fail; \
2635: } \
1.297 djm 2636: } while (0)
1.320 dtucker 2637: ASSEMBLE(ciphers, def_cipher, all_cipher);
2638: ASSEMBLE(macs, def_mac, all_mac);
2639: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2640: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2641: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2642: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2643: #undef ASSEMBLE
1.224 djm 2644:
1.207 djm 2645: #define CLEAR_ON_NONE(v) \
2646: do { \
1.218 djm 2647: if (option_clear_or_none(v)) { \
1.207 djm 2648: free(v); \
2649: v = NULL; \
2650: } \
2651: } while(0)
2652: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2653: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2654: CLEAR_ON_NONE(options->proxy_command);
2655: CLEAR_ON_NONE(options->control_path);
1.223 djm 2656: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2657: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2658: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2659: CLEAR_ON_NONE(options->known_hosts_command);
1.287 djm 2660: if (options->jump_host != NULL &&
2661: strcmp(options->jump_host, "none") == 0 &&
2662: options->jump_port == 0 && options->jump_user == NULL) {
2663: free(options->jump_host);
2664: options->jump_host = NULL;
2665: }
1.362 djm 2666: if (options->num_permitted_cnames == 1 &&
2667: !config_has_permitted_cnames(options)) {
2668: /* clean up CanonicalizePermittedCNAMEs=none */
2669: free(options->permitted_cnames[0].source_list);
2670: free(options->permitted_cnames[0].target_list);
2671: memset(options->permitted_cnames, '\0',
2672: sizeof(*options->permitted_cnames));
2673: options->num_permitted_cnames = 0;
2674: }
1.254 markus 2675: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2676: /* options->user will be set in the main program if appropriate */
2677: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2678: /* options->host_key_alias should not be set by default */
1.67 markus 2679: /* options->preferred_authentications will be set in ssh */
1.344 djm 2680:
2681: /* success */
2682: ret = 0;
2683: fail:
2684: free(all_cipher);
2685: free(all_mac);
2686: free(all_kex);
2687: free(all_key);
2688: free(all_sig);
2689: free(def_cipher);
2690: free(def_mac);
2691: free(def_kex);
2692: free(def_key);
2693: free(def_sig);
2694: return ret;
2695: }
2696:
2697: void
2698: free_options(Options *o)
2699: {
2700: int i;
2701:
2702: if (o == NULL)
2703: return;
2704:
2705: #define FREE_ARRAY(type, n, a) \
2706: do { \
2707: type _i; \
2708: for (_i = 0; _i < (n); _i++) \
2709: free((a)[_i]); \
2710: } while (0)
2711:
2712: free(o->forward_agent_sock_path);
2713: free(o->xauth_location);
2714: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2715: free(o->log_verbose);
2716: free(o->ciphers);
2717: free(o->macs);
2718: free(o->hostkeyalgorithms);
2719: free(o->kex_algorithms);
2720: free(o->ca_sign_algorithms);
2721: free(o->hostname);
2722: free(o->host_key_alias);
2723: free(o->proxy_command);
2724: free(o->user);
2725: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2726: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2727: free(o->preferred_authentications);
2728: free(o->bind_address);
2729: free(o->bind_interface);
2730: free(o->pkcs11_provider);
2731: free(o->sk_provider);
2732: for (i = 0; i < o->num_identity_files; i++) {
2733: free(o->identity_files[i]);
2734: sshkey_free(o->identity_keys[i]);
2735: }
2736: for (i = 0; i < o->num_certificate_files; i++) {
2737: free(o->certificate_files[i]);
2738: sshkey_free(o->certificates[i]);
2739: }
2740: free(o->identity_agent);
2741: for (i = 0; i < o->num_local_forwards; i++) {
2742: free(o->local_forwards[i].listen_host);
2743: free(o->local_forwards[i].listen_path);
2744: free(o->local_forwards[i].connect_host);
2745: free(o->local_forwards[i].connect_path);
2746: }
2747: free(o->local_forwards);
2748: for (i = 0; i < o->num_remote_forwards; i++) {
2749: free(o->remote_forwards[i].listen_host);
2750: free(o->remote_forwards[i].listen_path);
2751: free(o->remote_forwards[i].connect_host);
2752: free(o->remote_forwards[i].connect_path);
2753: }
2754: free(o->remote_forwards);
2755: free(o->stdio_forward_host);
2756: FREE_ARRAY(int, o->num_send_env, o->send_env);
2757: free(o->send_env);
2758: FREE_ARRAY(int, o->num_setenv, o->setenv);
2759: free(o->setenv);
2760: free(o->control_path);
2761: free(o->local_command);
2762: free(o->remote_command);
2763: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2764: for (i = 0; i < o->num_permitted_cnames; i++) {
2765: free(o->permitted_cnames[i].source_list);
2766: free(o->permitted_cnames[i].target_list);
2767: }
2768: free(o->revoked_host_keys);
1.350 dtucker 2769: free(o->hostbased_accepted_algos);
1.349 dtucker 2770: free(o->pubkey_accepted_algos);
1.344 djm 2771: free(o->jump_user);
2772: free(o->jump_host);
2773: free(o->jump_extra);
2774: free(o->ignored_unknown);
2775: explicit_bzero(o, sizeof(*o));
2776: #undef FREE_ARRAY
1.135 djm 2777: }
2778:
1.220 millert 2779: struct fwdarg {
2780: char *arg;
2781: int ispath;
2782: };
2783:
2784: /*
2785: * parse_fwd_field
2786: * parses the next field in a port forwarding specification.
2787: * sets fwd to the parsed field and advances p past the colon
2788: * or sets it to NULL at end of string.
2789: * returns 0 on success, else non-zero.
2790: */
2791: static int
2792: parse_fwd_field(char **p, struct fwdarg *fwd)
2793: {
2794: char *ep, *cp = *p;
2795: int ispath = 0;
2796:
2797: if (*cp == '\0') {
2798: *p = NULL;
2799: return -1; /* end of string */
2800: }
2801:
2802: /*
2803: * A field escaped with square brackets is used literally.
2804: * XXX - allow ']' to be escaped via backslash?
2805: */
2806: if (*cp == '[') {
2807: /* find matching ']' */
2808: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2809: if (*ep == '/')
2810: ispath = 1;
2811: }
2812: /* no matching ']' or not at end of field. */
2813: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2814: return -1;
2815: /* NUL terminate the field and advance p past the colon */
2816: *ep++ = '\0';
2817: if (*ep != '\0')
2818: *ep++ = '\0';
2819: fwd->arg = cp + 1;
2820: fwd->ispath = ispath;
2821: *p = ep;
2822: return 0;
2823: }
2824:
2825: for (cp = *p; *cp != '\0'; cp++) {
2826: switch (*cp) {
2827: case '\\':
2828: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2829: if (*cp == '\0')
2830: return -1;
1.220 millert 2831: break;
2832: case '/':
2833: ispath = 1;
2834: break;
2835: case ':':
2836: *cp++ = '\0';
2837: goto done;
2838: }
2839: }
2840: done:
2841: fwd->arg = *p;
2842: fwd->ispath = ispath;
2843: *p = cp;
2844: return 0;
2845: }
2846:
1.135 djm 2847: /*
2848: * parse_forward
2849: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2850: * dynamicfwd == 0
1.220 millert 2851: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2852: * listenpath:connectpath
1.168 stevesk 2853: * dynamicfwd == 1
2854: * [listenhost:]listenport
1.135 djm 2855: * returns number of arguments parsed or zero on error
2856: */
2857: int
1.220 millert 2858: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2859: {
1.220 millert 2860: struct fwdarg fwdargs[4];
2861: char *p, *cp;
1.331 dtucker 2862: int i, err;
1.135 djm 2863:
1.220 millert 2864: memset(fwd, 0, sizeof(*fwd));
2865: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2866:
1.331 dtucker 2867: /*
2868: * We expand environment variables before checking if we think they're
2869: * paths so that if ${VAR} expands to a fully qualified path it is
2870: * treated as a path.
2871: */
2872: cp = p = dollar_expand(&err, fwdspec);
2873: if (p == NULL || err)
2874: return 0;
1.135 djm 2875:
2876: /* skip leading spaces */
1.214 deraadt 2877: while (isspace((u_char)*cp))
1.135 djm 2878: cp++;
2879:
1.220 millert 2880: for (i = 0; i < 4; ++i) {
2881: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2882: break;
1.220 millert 2883: }
1.135 djm 2884:
1.170 stevesk 2885: /* Check for trailing garbage */
1.220 millert 2886: if (cp != NULL && *cp != '\0') {
1.135 djm 2887: i = 0; /* failure */
1.220 millert 2888: }
1.135 djm 2889:
2890: switch (i) {
1.168 stevesk 2891: case 1:
1.220 millert 2892: if (fwdargs[0].ispath) {
2893: fwd->listen_path = xstrdup(fwdargs[0].arg);
2894: fwd->listen_port = PORT_STREAMLOCAL;
2895: } else {
2896: fwd->listen_host = NULL;
2897: fwd->listen_port = a2port(fwdargs[0].arg);
2898: }
1.168 stevesk 2899: fwd->connect_host = xstrdup("socks");
2900: break;
2901:
2902: case 2:
1.220 millert 2903: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2904: fwd->listen_path = xstrdup(fwdargs[0].arg);
2905: fwd->listen_port = PORT_STREAMLOCAL;
2906: fwd->connect_path = xstrdup(fwdargs[1].arg);
2907: fwd->connect_port = PORT_STREAMLOCAL;
2908: } else if (fwdargs[1].ispath) {
2909: fwd->listen_host = NULL;
2910: fwd->listen_port = a2port(fwdargs[0].arg);
2911: fwd->connect_path = xstrdup(fwdargs[1].arg);
2912: fwd->connect_port = PORT_STREAMLOCAL;
2913: } else {
2914: fwd->listen_host = xstrdup(fwdargs[0].arg);
2915: fwd->listen_port = a2port(fwdargs[1].arg);
2916: fwd->connect_host = xstrdup("socks");
2917: }
1.168 stevesk 2918: break;
2919:
1.135 djm 2920: case 3:
1.220 millert 2921: if (fwdargs[0].ispath) {
2922: fwd->listen_path = xstrdup(fwdargs[0].arg);
2923: fwd->listen_port = PORT_STREAMLOCAL;
2924: fwd->connect_host = xstrdup(fwdargs[1].arg);
2925: fwd->connect_port = a2port(fwdargs[2].arg);
2926: } else if (fwdargs[2].ispath) {
2927: fwd->listen_host = xstrdup(fwdargs[0].arg);
2928: fwd->listen_port = a2port(fwdargs[1].arg);
2929: fwd->connect_path = xstrdup(fwdargs[2].arg);
2930: fwd->connect_port = PORT_STREAMLOCAL;
2931: } else {
2932: fwd->listen_host = NULL;
2933: fwd->listen_port = a2port(fwdargs[0].arg);
2934: fwd->connect_host = xstrdup(fwdargs[1].arg);
2935: fwd->connect_port = a2port(fwdargs[2].arg);
2936: }
1.135 djm 2937: break;
2938:
2939: case 4:
1.220 millert 2940: fwd->listen_host = xstrdup(fwdargs[0].arg);
2941: fwd->listen_port = a2port(fwdargs[1].arg);
2942: fwd->connect_host = xstrdup(fwdargs[2].arg);
2943: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2944: break;
2945: default:
2946: i = 0; /* failure */
2947: }
2948:
1.202 djm 2949: free(p);
1.135 djm 2950:
1.168 stevesk 2951: if (dynamicfwd) {
2952: if (!(i == 1 || i == 2))
2953: goto fail_free;
2954: } else {
1.220 millert 2955: if (!(i == 3 || i == 4)) {
2956: if (fwd->connect_path == NULL &&
2957: fwd->listen_path == NULL)
2958: goto fail_free;
2959: }
2960: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2961: goto fail_free;
2962: }
2963:
1.220 millert 2964: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2965: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2966: goto fail_free;
2967: if (fwd->connect_host != NULL &&
2968: strlen(fwd->connect_host) >= NI_MAXHOST)
2969: goto fail_free;
1.356 djm 2970: /*
2971: * XXX - if connecting to a remote socket, max sun len may not
2972: * match this host
2973: */
1.220 millert 2974: if (fwd->connect_path != NULL &&
2975: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2976: goto fail_free;
1.176 djm 2977: if (fwd->listen_host != NULL &&
2978: strlen(fwd->listen_host) >= NI_MAXHOST)
2979: goto fail_free;
1.220 millert 2980: if (fwd->listen_path != NULL &&
2981: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2982: goto fail_free;
1.135 djm 2983:
2984: return (i);
2985:
2986: fail_free:
1.202 djm 2987: free(fwd->connect_host);
2988: fwd->connect_host = NULL;
1.220 millert 2989: free(fwd->connect_path);
2990: fwd->connect_path = NULL;
1.202 djm 2991: free(fwd->listen_host);
2992: fwd->listen_host = NULL;
1.220 millert 2993: free(fwd->listen_path);
2994: fwd->listen_path = NULL;
1.135 djm 2995: return (0);
1.221 djm 2996: }
2997:
1.257 djm 2998: int
2999: parse_jump(const char *s, Options *o, int active)
3000: {
3001: char *orig, *sdup, *cp;
3002: char *host = NULL, *user = NULL;
1.345 djm 3003: int r, ret = -1, port = -1, first;
1.257 djm 3004:
3005: active &= o->proxy_command == NULL && o->jump_host == NULL;
3006:
3007: orig = sdup = xstrdup(s);
1.356 djm 3008:
3009: /* Remove comment and trailing whitespace */
3010: if ((cp = strchr(orig, '#')) != NULL)
3011: *cp = '\0';
3012: rtrim(orig);
3013:
1.258 naddy 3014: first = active;
1.259 djm 3015: do {
1.287 djm 3016: if (strcasecmp(s, "none") == 0)
3017: break;
1.259 djm 3018: if ((cp = strrchr(sdup, ',')) == NULL)
3019: cp = sdup; /* last */
3020: else
3021: *cp++ = '\0';
3022:
1.258 naddy 3023: if (first) {
1.257 djm 3024: /* First argument and configuration is active */
1.345 djm 3025: r = parse_ssh_uri(cp, &user, &host, &port);
3026: if (r == -1 || (r == 1 &&
3027: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 3028: goto out;
3029: } else {
3030: /* Subsequent argument or inactive configuration */
1.345 djm 3031: r = parse_ssh_uri(cp, NULL, NULL, NULL);
3032: if (r == -1 || (r == 1 &&
3033: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 3034: goto out;
3035: }
1.258 naddy 3036: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 3037: } while (cp != sdup);
1.257 djm 3038: /* success */
1.258 naddy 3039: if (active) {
1.287 djm 3040: if (strcasecmp(s, "none") == 0) {
3041: o->jump_host = xstrdup("none");
3042: o->jump_port = 0;
3043: } else {
3044: o->jump_user = user;
3045: o->jump_host = host;
3046: o->jump_port = port;
3047: o->proxy_command = xstrdup("none");
3048: user = host = NULL;
3049: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
3050: o->jump_extra = xstrdup(s);
3051: o->jump_extra[cp - s] = '\0';
3052: }
1.259 djm 3053: }
1.258 naddy 3054: }
1.257 djm 3055: ret = 0;
3056: out:
1.258 naddy 3057: free(orig);
1.257 djm 3058: free(user);
3059: free(host);
3060: return ret;
1.280 millert 3061: }
3062:
3063: int
3064: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
3065: {
1.344 djm 3066: char *user = NULL, *host = NULL, *path = NULL;
3067: int r, port;
1.280 millert 3068:
1.344 djm 3069: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 3070: if (r == 0 && path != NULL)
3071: r = -1; /* path not allowed */
1.344 djm 3072: if (r == 0) {
3073: if (userp != NULL) {
3074: *userp = user;
3075: user = NULL;
3076: }
3077: if (hostp != NULL) {
3078: *hostp = host;
3079: host = NULL;
3080: }
3081: if (portp != NULL)
3082: *portp = port;
3083: }
3084: free(user);
3085: free(host);
3086: free(path);
1.280 millert 3087: return r;
1.257 djm 3088: }
3089:
1.221 djm 3090: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3091: static const char *
3092: fmt_multistate_int(int val, const struct multistate *m)
3093: {
3094: u_int i;
3095:
3096: for (i = 0; m[i].key != NULL; i++) {
3097: if (m[i].value == val)
3098: return m[i].key;
3099: }
3100: return "UNKNOWN";
3101: }
3102:
3103: static const char *
3104: fmt_intarg(OpCodes code, int val)
3105: {
3106: if (val == -1)
3107: return "unset";
3108: switch (code) {
3109: case oAddressFamily:
3110: return fmt_multistate_int(val, multistate_addressfamily);
3111: case oVerifyHostKeyDNS:
1.232 djm 3112: case oUpdateHostkeys:
1.221 djm 3113: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3114: case oStrictHostKeyChecking:
3115: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3116: case oControlMaster:
3117: return fmt_multistate_int(val, multistate_controlmaster);
3118: case oTunnel:
3119: return fmt_multistate_int(val, multistate_tunnel);
3120: case oRequestTTY:
3121: return fmt_multistate_int(val, multistate_requesttty);
1.359 djm 3122: case oSessionType:
3123: return fmt_multistate_int(val, multistate_sessiontype);
1.221 djm 3124: case oCanonicalizeHostname:
3125: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3126: case oAddKeysToAgent:
3127: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.364 djm 3128: case oPubkeyAuthentication:
3129: return fmt_multistate_int(val, multistate_pubkey_auth);
1.224 djm 3130: case oFingerprintHash:
3131: return ssh_digest_alg_name(val);
1.221 djm 3132: default:
3133: switch (val) {
3134: case 0:
3135: return "no";
3136: case 1:
3137: return "yes";
3138: default:
3139: return "UNKNOWN";
3140: }
3141: }
3142: }
3143:
3144: static const char *
3145: lookup_opcode_name(OpCodes code)
3146: {
3147: u_int i;
3148:
3149: for (i = 0; keywords[i].name != NULL; i++)
3150: if (keywords[i].opcode == code)
3151: return(keywords[i].name);
3152: return "UNKNOWN";
3153: }
3154:
3155: static void
3156: dump_cfg_int(OpCodes code, int val)
3157: {
3158: printf("%s %d\n", lookup_opcode_name(code), val);
3159: }
3160:
3161: static void
3162: dump_cfg_fmtint(OpCodes code, int val)
3163: {
3164: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3165: }
3166:
3167: static void
3168: dump_cfg_string(OpCodes code, const char *val)
3169: {
3170: if (val == NULL)
3171: return;
3172: printf("%s %s\n", lookup_opcode_name(code), val);
3173: }
3174:
3175: static void
3176: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3177: {
3178: u_int i;
3179:
3180: for (i = 0; i < count; i++)
3181: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3182: }
3183:
3184: static void
3185: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3186: {
3187: u_int i;
3188:
3189: printf("%s", lookup_opcode_name(code));
1.356 djm 3190: if (count == 0)
3191: printf(" none");
1.221 djm 3192: for (i = 0; i < count; i++)
3193: printf(" %s", vals[i]);
3194: printf("\n");
3195: }
3196:
3197: static void
3198: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3199: {
3200: const struct Forward *fwd;
3201: u_int i;
3202:
3203: /* oDynamicForward */
3204: for (i = 0; i < count; i++) {
3205: fwd = &fwds[i];
1.265 djm 3206: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3207: strcmp(fwd->connect_host, "socks") != 0)
3208: continue;
1.265 djm 3209: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3210: strcmp(fwd->connect_host, "socks") == 0)
3211: continue;
3212: printf("%s", lookup_opcode_name(code));
3213: if (fwd->listen_port == PORT_STREAMLOCAL)
3214: printf(" %s", fwd->listen_path);
3215: else if (fwd->listen_host == NULL)
3216: printf(" %d", fwd->listen_port);
3217: else {
3218: printf(" [%s]:%d",
3219: fwd->listen_host, fwd->listen_port);
3220: }
3221: if (code != oDynamicForward) {
3222: if (fwd->connect_port == PORT_STREAMLOCAL)
3223: printf(" %s", fwd->connect_path);
3224: else if (fwd->connect_host == NULL)
3225: printf(" %d", fwd->connect_port);
3226: else {
3227: printf(" [%s]:%d",
3228: fwd->connect_host, fwd->connect_port);
3229: }
3230: }
3231: printf("\n");
3232: }
3233: }
3234:
3235: void
3236: dump_client_config(Options *o, const char *host)
3237: {
1.326 djm 3238: int i, r;
3239: char buf[8], *all_key;
3240:
3241: /*
3242: * Expand HostKeyAlgorithms name lists. This isn't handled in
3243: * fill_default_options() like the other algorithm lists because
3244: * the host key algorithms are by default dynamically chosen based
3245: * on the host's keys found in known_hosts.
3246: */
3247: all_key = sshkey_alg_list(0, 0, 1, ',');
3248: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3249: all_key)) != 0)
1.340 djm 3250: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3251: free(all_key);
1.240 djm 3252:
1.221 djm 3253: /* Most interesting options first: user, host, port */
3254: dump_cfg_string(oUser, o->user);
1.306 jmc 3255: dump_cfg_string(oHostname, host);
1.221 djm 3256: dump_cfg_int(oPort, o->port);
3257:
3258: /* Flag options */
3259: dump_cfg_fmtint(oAddressFamily, o->address_family);
3260: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3261: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3262: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3263: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3264: dump_cfg_fmtint(oCompression, o->compression);
3265: dump_cfg_fmtint(oControlMaster, o->control_master);
3266: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3267: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3268: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3269: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3270: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3271: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3272: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3273: #ifdef GSSAPI
3274: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3275: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3276: #endif /* GSSAPI */
3277: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3278: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3279: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3280: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3281: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3282: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3283: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3284: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3285: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3286: dump_cfg_fmtint(oRequestTTY, o->request_tty);
1.359 djm 3287: dump_cfg_fmtint(oSessionType, o->session_type);
1.360 djm 3288: dump_cfg_fmtint(oStdinNull, o->stdin_null);
1.361 djm 3289: dump_cfg_fmtint(oForkAfterAuthentication, o->fork_after_authentication);
1.221 djm 3290: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3291: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3292: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3293: dump_cfg_fmtint(oTunnel, o->tun_open);
3294: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3295: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3296: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 3297:
3298: /* Integer options */
3299: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3300: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3301: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3302: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3303: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3304: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
3305:
3306: /* String options */
3307: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3308: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3309: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3310: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3311: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3312: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3313: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3314: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3315: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3316: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3317: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3318: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3319: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3320: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3321: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3322: dump_cfg_string(oMacs, o->macs);
1.266 djm 3323: #ifdef ENABLE_PKCS11
1.221 djm 3324: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3325: #endif
1.310 djm 3326: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3327: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3328: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3329: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3330: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3331: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.221 djm 3332:
1.230 djm 3333: /* Forwards */
1.221 djm 3334: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3335: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3336: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3337:
3338: /* String array options */
3339: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3340: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3341: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3342: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3343: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3344: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3345: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3346: dump_cfg_strarray_oneline(oLogVerbose,
3347: o->num_log_verbose, o->log_verbose);
1.221 djm 3348:
3349: /* Special cases */
1.351 markus 3350:
3351: /* PermitRemoteOpen */
3352: if (o->num_permitted_remote_opens == 0)
3353: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3354: else
3355: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3356: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3357:
3358: /* AddKeysToAgent */
3359: if (o->add_keys_to_agent_lifespan <= 0)
3360: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3361: else {
3362: printf("addkeystoagent%s %d\n",
3363: o->add_keys_to_agent == 3 ? " confirm" : "",
3364: o->add_keys_to_agent_lifespan);
3365: }
1.319 djm 3366:
3367: /* oForwardAgent */
3368: if (o->forward_agent_sock_path == NULL)
3369: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3370: else
3371: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3372:
3373: /* oConnectTimeout */
3374: if (o->connection_timeout == -1)
3375: printf("connecttimeout none\n");
3376: else
3377: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3378:
3379: /* oTunnelDevice */
3380: printf("tunneldevice");
3381: if (o->tun_local == SSH_TUNID_ANY)
3382: printf(" any");
3383: else
3384: printf(" %d", o->tun_local);
3385: if (o->tun_remote == SSH_TUNID_ANY)
3386: printf(":any");
3387: else
3388: printf(":%d", o->tun_remote);
3389: printf("\n");
3390:
3391: /* oCanonicalizePermittedCNAMEs */
1.362 djm 3392: printf("canonicalizePermittedcnames");
3393: if (o->num_permitted_cnames == 0)
1.363 djm 3394: printf(" none");
1.362 djm 3395: for (i = 0; i < o->num_permitted_cnames; i++) {
3396: printf(" %s:%s", o->permitted_cnames[i].source_list,
3397: o->permitted_cnames[i].target_list);
1.221 djm 3398: }
1.362 djm 3399: printf("\n");
1.221 djm 3400:
3401: /* oControlPersist */
3402: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3403: dump_cfg_fmtint(oControlPersist, o->control_persist);
3404: else
3405: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3406:
3407: /* oEscapeChar */
3408: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3409: printf("escapechar none\n");
3410: else {
1.257 djm 3411: vis(buf, o->escape_char, VIS_WHITE, 0);
3412: printf("escapechar %s\n", buf);
1.221 djm 3413: }
3414:
3415: /* oIPQoS */
3416: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3417: printf("%s\n", iptos2str(o->ip_qos_bulk));
3418:
3419: /* oRekeyLimit */
1.249 dtucker 3420: printf("rekeylimit %llu %d\n",
3421: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3422:
3423: /* oStreamLocalBindMask */
3424: printf("streamlocalbindmask 0%o\n",
3425: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3426:
3427: /* oLogFacility */
3428: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3429:
3430: /* oProxyCommand / oProxyJump */
3431: if (o->jump_host == NULL)
3432: dump_cfg_string(oProxyCommand, o->proxy_command);
3433: else {
3434: /* Check for numeric addresses */
3435: i = strchr(o->jump_host, ':') != NULL ||
3436: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3437: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3438: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3439: /* optional additional jump spec */
3440: o->jump_extra == NULL ? "" : o->jump_extra,
3441: o->jump_extra == NULL ? "" : ",",
1.257 djm 3442: /* optional user */
3443: o->jump_user == NULL ? "" : o->jump_user,
3444: o->jump_user == NULL ? "" : "@",
3445: /* opening [ if hostname is numeric */
3446: i ? "[" : "",
3447: /* mandatory hostname */
3448: o->jump_host,
3449: /* closing ] if hostname is numeric */
3450: i ? "]" : "",
3451: /* optional port number */
3452: o->jump_port <= 0 ? "" : ":",
1.259 djm 3453: o->jump_port <= 0 ? "" : buf);
1.257 djm 3454: }
1.1 deraadt 3455: }
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