Annotation of src/usr.bin/ssh/readconf.c, Revision 1.379
1.379 ! djm 1: /* $OpenBSD: readconf.c,v 1.378 2023/07/17 04:04:36 djm Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
1.378 djm 21: #include <net/if.h>
1.152 stevesk 22: #include <netinet/in.h>
1.190 djm 23: #include <netinet/ip.h>
1.148 stevesk 24:
25: #include <ctype.h>
1.154 stevesk 26: #include <errno.h>
1.206 djm 27: #include <fcntl.h>
1.252 djm 28: #include <glob.h>
1.378 djm 29: #include <ifaddrs.h>
1.155 stevesk 30: #include <netdb.h>
1.206 djm 31: #include <paths.h>
32: #include <pwd.h>
1.159 deraadt 33: #include <signal.h>
1.158 stevesk 34: #include <stdio.h>
1.157 stevesk 35: #include <string.h>
1.312 deraadt 36: #include <stdarg.h>
1.156 stevesk 37: #include <unistd.h>
1.228 deraadt 38: #include <limits.h>
1.200 dtucker 39: #include <util.h>
1.221 djm 40: #include <vis.h>
1.1 deraadt 41:
1.159 deraadt 42: #include "xmalloc.h"
1.1 deraadt 43: #include "ssh.h"
1.297 djm 44: #include "ssherr.h"
1.58 markus 45: #include "cipher.h"
1.55 markus 46: #include "pathnames.h"
1.58 markus 47: #include "log.h"
1.227 djm 48: #include "sshkey.h"
1.220 millert 49: #include "misc.h"
1.58 markus 50: #include "readconf.h"
51: #include "match.h"
1.62 markus 52: #include "kex.h"
53: #include "mac.h"
1.206 djm 54: #include "uidswap.h"
1.221 djm 55: #include "myproposal.h"
1.224 djm 56: #include "digest.h"
1.1 deraadt 57:
58: /* Format of the configuration file:
59:
60: # Configuration data is parsed as follows:
61: # 1. command line options
62: # 2. user-specific file
63: # 3. system-wide file
64: # Any configuration value is only changed the first time it is set.
65: # Thus, host-specific definitions should be at the beginning of the
66: # configuration file, and defaults at the end.
67:
68: # Host-specific declarations. These may override anything above. A single
69: # host may match multiple declarations; these are processed in the order
70: # that they are given in.
71:
72: Host *.ngs.fi ngs.fi
1.96 markus 73: User foo
1.1 deraadt 74:
75: Host fake.com
1.306 jmc 76: Hostname another.host.name.real.org
1.1 deraadt 77: User blaah
78: Port 34289
79: ForwardX11 no
80: ForwardAgent no
81:
82: Host books.com
83: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 84: Ciphers 3des-cbc
1.1 deraadt 85:
86: Host fascist.blob.com
87: Port 23123
88: User tylonen
89: PasswordAuthentication no
90:
91: Host puukko.hut.fi
92: User t35124p
93: ProxyCommand ssh-proxy %h %p
94:
95: Host *.fr
1.96 markus 96: PublicKeyAuthentication no
1.1 deraadt 97:
98: Host *.su
1.266 djm 99: Ciphers aes128-ctr
1.1 deraadt 100: PasswordAuthentication no
101:
1.144 reyk 102: Host vpn.fake.com
103: Tunnel yes
104: TunnelDevice 3
105:
1.1 deraadt 106: # Defaults for various options
107: Host *
108: ForwardAgent no
1.50 markus 109: ForwardX11 no
1.1 deraadt 110: PasswordAuthentication yes
111: StrictHostKeyChecking yes
1.126 markus 112: TcpKeepAlive no
1.1 deraadt 113: IdentityFile ~/.ssh/identity
114: Port 22
115: EscapeChar ~
116:
117: */
118:
1.252 djm 119: static int read_config_file_depth(const char *filename, struct passwd *pw,
120: const char *host, const char *original_host, Options *options,
1.302 djm 121: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 122: static int process_config_line_depth(Options *options, struct passwd *pw,
123: const char *host, const char *original_host, char *line,
1.302 djm 124: const char *filename, int linenum, int *activep, int flags,
125: int *want_final_pass, int depth);
1.252 djm 126:
1.1 deraadt 127: /* Keyword tokens. */
128:
1.17 markus 129: typedef enum {
130: oBadOption,
1.379 ! djm 131: oHost, oMatch, oInclude, oTag,
1.186 djm 132: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
133: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 134: oPasswordAuthentication,
1.358 dtucker 135: oXAuthLocation,
1.317 dtucker 136: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.351 markus 137: oPermitRemoteOpen,
1.253 markus 138: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 139: oUser, oEscapeChar, oProxyCommand,
1.17 markus 140: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
141: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 142: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 143: oLogFacility, oLogLevel, oLogVerbose, oCiphers, oMacs,
1.221 djm 144: oPubkeyAuthentication,
1.67 markus 145: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 146: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 147: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 148: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 149: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 150: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 151: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 152: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 153: oHashKnownHosts,
1.277 bluhm 154: oTunnel, oTunnelDevice,
155: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 156: oVisualHostKey,
1.360 djm 157: oKexAlgorithms, oIPQoS, oRequestTTY, oSessionType, oStdinNull,
1.361 djm 158: oForkAfterAuthentication, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 159: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
160: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 161: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.350 dtucker 162: oFingerprintHash, oUpdateHostkeys, oHostbasedAcceptedAlgorithms,
1.349 dtucker 163: oPubkeyAcceptedAlgorithms, oCASignatureAlgorithms, oProxyJump,
1.369 djm 164: oSecurityKeyProvider, oKnownHostsCommand, oRequiredRSASize,
1.370 djm 165: oEnableEscapeCommandline,
1.273 djm 166: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 167: } OpCodes;
168:
169: /* Textual representations of the tokens. */
170:
1.17 markus 171: static struct {
172: const char *name;
173: OpCodes opcode;
174: } keywords[] = {
1.266 djm 175: /* Deprecated options */
1.273 djm 176: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 177: { "cipher", oDeprecated },
1.266 djm 178: { "fallbacktorsh", oDeprecated },
179: { "globalknownhostsfile2", oDeprecated },
180: { "rhostsauthentication", oDeprecated },
181: { "userknownhostsfile2", oDeprecated },
182: { "useroaming", oDeprecated },
183: { "usersh", oDeprecated },
1.294 dtucker 184: { "useprivilegedport", oDeprecated },
1.266 djm 185:
186: /* Unsupported options */
187: { "afstokenpassing", oUnsupported },
188: { "kerberosauthentication", oUnsupported },
189: { "kerberostgtpassing", oUnsupported },
1.318 dtucker 190: { "rsaauthentication", oUnsupported },
191: { "rhostsrsaauthentication", oUnsupported },
192: { "compressionlevel", oUnsupported },
1.266 djm 193:
194: /* Sometimes-unsupported options */
195: #if defined(GSSAPI)
196: { "gssapiauthentication", oGssAuthentication },
197: { "gssapidelegatecredentials", oGssDelegateCreds },
198: # else
199: { "gssapiauthentication", oUnsupported },
200: { "gssapidelegatecredentials", oUnsupported },
201: #endif
202: #ifdef ENABLE_PKCS11
1.304 djm 203: { "pkcs11provider", oPKCS11Provider },
1.266 djm 204: { "smartcarddevice", oPKCS11Provider },
205: # else
206: { "smartcarddevice", oUnsupported },
207: { "pkcs11provider", oUnsupported },
208: #endif
209:
1.17 markus 210: { "forwardagent", oForwardAgent },
211: { "forwardx11", oForwardX11 },
1.123 markus 212: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 213: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 214: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 215: { "xauthlocation", oXAuthLocation },
1.17 markus 216: { "gatewayports", oGatewayPorts },
217: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 218: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
219: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.358 dtucker 220: { "challengeresponseauthentication", oKbdInteractiveAuthentication }, /* alias */
221: { "skeyauthentication", oKbdInteractiveAuthentication }, /* alias */
222: { "tisauthentication", oKbdInteractiveAuthentication }, /* alias */
1.50 markus 223: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 224: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 225: { "hostbasedauthentication", oHostbasedAuthentication },
1.17 markus 226: { "identityfile", oIdentityFile },
1.174 stevesk 227: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 228: { "identitiesonly", oIdentitiesOnly },
1.241 djm 229: { "certificatefile", oCertificateFile },
1.246 jcs 230: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 231: { "identityagent", oIdentityAgent },
1.306 jmc 232: { "hostname", oHostname },
1.52 markus 233: { "hostkeyalias", oHostKeyAlias },
1.17 markus 234: { "proxycommand", oProxyCommand },
235: { "port", oPort },
1.25 markus 236: { "ciphers", oCiphers },
1.62 markus 237: { "macs", oMacs },
1.17 markus 238: { "remoteforward", oRemoteForward },
239: { "localforward", oLocalForward },
1.351 markus 240: { "permitremoteopen", oPermitRemoteOpen },
1.17 markus 241: { "user", oUser },
242: { "host", oHost },
1.206 djm 243: { "match", oMatch },
1.379 ! djm 244: { "tag", oTag },
1.17 markus 245: { "escapechar", oEscapeChar },
246: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 247: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 248: { "connectionattempts", oConnectionAttempts },
249: { "batchmode", oBatchMode },
250: { "checkhostip", oCheckHostIP },
251: { "stricthostkeychecking", oStrictHostKeyChecking },
252: { "compression", oCompression },
1.126 markus 253: { "tcpkeepalive", oTCPKeepAlive },
254: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 255: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 256: { "syslogfacility", oLogFacility },
1.17 markus 257: { "loglevel", oLogLevel },
1.339 djm 258: { "logverbose", oLogVerbose },
1.71 markus 259: { "dynamicforward", oDynamicForward },
1.67 markus 260: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 261: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 262: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 263: { "bindaddress", oBindAddress },
1.282 djm 264: { "bindinterface", oBindInterface },
1.93 deraadt 265: { "clearallforwardings", oClearAllForwardings },
1.101 markus 266: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 267: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 268: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 269: { "rekeylimit", oRekeyLimit },
1.111 djm 270: { "connecttimeout", oConnectTimeout },
1.112 djm 271: { "addressfamily", oAddressFamily },
1.127 markus 272: { "serveraliveinterval", oServerAliveInterval },
273: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 274: { "sendenv", oSendEnv },
1.290 djm 275: { "setenv", oSetEnv },
1.132 djm 276: { "controlpath", oControlPath },
277: { "controlmaster", oControlMaster },
1.187 djm 278: { "controlpersist", oControlPersist },
1.136 djm 279: { "hashknownhosts", oHashKnownHosts },
1.252 djm 280: { "include", oInclude },
1.144 reyk 281: { "tunnel", oTunnel },
282: { "tunneldevice", oTunnelDevice },
283: { "localcommand", oLocalCommand },
284: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 285: { "remotecommand", oRemoteCommand },
1.167 grunk 286: { "visualhostkey", oVisualHostKey },
1.189 djm 287: { "kexalgorithms", oKexAlgorithms },
1.190 djm 288: { "ipqos", oIPQoS },
1.192 djm 289: { "requesttty", oRequestTTY },
1.359 djm 290: { "sessiontype", oSessionType },
1.360 djm 291: { "stdinnull", oStdinNull },
1.361 djm 292: { "forkafterauthentication", oForkAfterAuthentication },
1.205 djm 293: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 294: { "canonicaldomains", oCanonicalDomains },
1.209 djm 295: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
296: { "canonicalizehostname", oCanonicalizeHostname },
297: { "canonicalizemaxdots", oCanonicalizeMaxDots },
298: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 299: { "streamlocalbindmask", oStreamLocalBindMask },
300: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 301: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 302: { "fingerprinthash", oFingerprintHash },
1.229 djm 303: { "updatehostkeys", oUpdateHostkeys },
1.354 naddy 304: { "hostbasedacceptedalgorithms", oHostbasedAcceptedAlgorithms },
1.350 dtucker 305: { "hostbasedkeytypes", oHostbasedAcceptedAlgorithms }, /* obsolete */
1.352 dtucker 306: { "pubkeyacceptedalgorithms", oPubkeyAcceptedAlgorithms },
1.349 dtucker 307: { "pubkeyacceptedkeytypes", oPubkeyAcceptedAlgorithms }, /* obsolete */
1.199 djm 308: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 309: { "proxyjump", oProxyJump },
1.318 dtucker 310: { "securitykeyprovider", oSecurityKeyProvider },
1.346 djm 311: { "knownhostscommand", oKnownHostsCommand },
1.369 djm 312: { "requiredrsasize", oRequiredRSASize },
1.370 djm 313: { "enableescapecommandline", oEnableEscapeCommandline },
1.171 djm 314:
1.92 stevesk 315: { NULL, oBadOption }
1.13 markus 316: };
317:
1.351 markus 318: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 319:
320: const char *
321: kex_default_pk_alg(void)
322: {
1.344 djm 323: static char *pkalgs;
324:
325: if (pkalgs == NULL) {
326: char *all_key;
327:
328: all_key = sshkey_alg_list(0, 0, 1, ',');
329: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
330: free(all_key);
331: }
332: return pkalgs;
1.320 dtucker 333: }
334:
1.327 dtucker 335: char *
336: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
337: const char *user)
338: {
339: struct ssh_digest_ctx *md;
340: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
341:
342: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
343: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
344: ssh_digest_update(md, host, strlen(host)) < 0 ||
345: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
346: ssh_digest_update(md, user, strlen(user)) < 0 ||
347: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 348: fatal_f("mux digest failed");
1.327 dtucker 349: ssh_digest_free(md);
350: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
351: }
352:
1.19 markus 353: /*
354: * Adds a local TCP/IP port forward to options. Never returns if there is an
355: * error.
356: */
1.1 deraadt 357:
1.26 markus 358: void
1.220 millert 359: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 360: {
1.220 millert 361: struct Forward *fwd;
1.251 djm 362: int i;
1.185 djm 363:
1.251 djm 364: /* Don't add duplicates */
365: for (i = 0; i < options->num_local_forwards; i++) {
366: if (forward_equals(newfwd, options->local_forwards + i))
367: return;
368: }
1.234 deraadt 369: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 370: options->num_local_forwards + 1,
371: sizeof(*options->local_forwards));
1.17 markus 372: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 373:
1.172 stevesk 374: fwd->listen_host = newfwd->listen_host;
1.135 djm 375: fwd->listen_port = newfwd->listen_port;
1.220 millert 376: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 377: fwd->connect_host = newfwd->connect_host;
1.135 djm 378: fwd->connect_port = newfwd->connect_port;
1.220 millert 379: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 380: }
381:
1.19 markus 382: /*
383: * Adds a remote TCP/IP port forward to options. Never returns if there is
384: * an error.
385: */
1.1 deraadt 386:
1.26 markus 387: void
1.220 millert 388: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 389: {
1.220 millert 390: struct Forward *fwd;
1.251 djm 391: int i;
1.185 djm 392:
1.251 djm 393: /* Don't add duplicates */
394: for (i = 0; i < options->num_remote_forwards; i++) {
395: if (forward_equals(newfwd, options->remote_forwards + i))
396: return;
397: }
1.234 deraadt 398: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 399: options->num_remote_forwards + 1,
400: sizeof(*options->remote_forwards));
1.17 markus 401: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 402:
1.172 stevesk 403: fwd->listen_host = newfwd->listen_host;
1.135 djm 404: fwd->listen_port = newfwd->listen_port;
1.220 millert 405: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 406: fwd->connect_host = newfwd->connect_host;
1.135 djm 407: fwd->connect_port = newfwd->connect_port;
1.220 millert 408: fwd->connect_path = newfwd->connect_path;
1.194 markus 409: fwd->handle = newfwd->handle;
1.184 markus 410: fwd->allocated_port = 0;
1.1 deraadt 411: }
412:
1.90 stevesk 413: static void
414: clear_forwardings(Options *options)
415: {
416: int i;
417:
1.135 djm 418: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 419: free(options->local_forwards[i].listen_host);
1.220 millert 420: free(options->local_forwards[i].listen_path);
1.202 djm 421: free(options->local_forwards[i].connect_host);
1.220 millert 422: free(options->local_forwards[i].connect_path);
1.135 djm 423: }
1.185 djm 424: if (options->num_local_forwards > 0) {
1.202 djm 425: free(options->local_forwards);
1.185 djm 426: options->local_forwards = NULL;
427: }
1.90 stevesk 428: options->num_local_forwards = 0;
1.135 djm 429: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 430: free(options->remote_forwards[i].listen_host);
1.220 millert 431: free(options->remote_forwards[i].listen_path);
1.202 djm 432: free(options->remote_forwards[i].connect_host);
1.220 millert 433: free(options->remote_forwards[i].connect_path);
1.135 djm 434: }
1.185 djm 435: if (options->num_remote_forwards > 0) {
1.202 djm 436: free(options->remote_forwards);
1.185 djm 437: options->remote_forwards = NULL;
438: }
1.90 stevesk 439: options->num_remote_forwards = 0;
1.145 reyk 440: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 441: }
442:
1.195 dtucker 443: void
1.241 djm 444: add_certificate_file(Options *options, const char *path, int userprovided)
445: {
446: int i;
447:
448: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
449: fatal("Too many certificate files specified (max %d)",
450: SSH_MAX_CERTIFICATE_FILES);
451:
452: /* Avoid registering duplicates */
453: for (i = 0; i < options->num_certificate_files; i++) {
454: if (options->certificate_file_userprovided[i] == userprovided &&
455: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 456: debug2_f("ignoring duplicate key %s", path);
1.241 djm 457: return;
458: }
459: }
460:
461: options->certificate_file_userprovided[options->num_certificate_files] =
462: userprovided;
463: options->certificate_files[options->num_certificate_files++] =
464: xstrdup(path);
465: }
466:
467: void
1.195 dtucker 468: add_identity_file(Options *options, const char *dir, const char *filename,
469: int userprovided)
470: {
471: char *path;
1.219 djm 472: int i;
1.195 dtucker 473:
474: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
475: fatal("Too many identity files specified (max %d)",
476: SSH_MAX_IDENTITY_FILES);
477:
478: if (dir == NULL) /* no dir, filename is absolute */
479: path = xstrdup(filename);
1.276 djm 480: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
481: fatal("Identity file path %s too long", path);
1.219 djm 482:
483: /* Avoid registering duplicates */
484: for (i = 0; i < options->num_identity_files; i++) {
485: if (options->identity_file_userprovided[i] == userprovided &&
486: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 487: debug2_f("ignoring duplicate key %s", path);
1.219 djm 488: free(path);
489: return;
490: }
491: }
1.195 dtucker 492:
493: options->identity_file_userprovided[options->num_identity_files] =
494: userprovided;
495: options->identity_files[options->num_identity_files++] = path;
496: }
497:
1.206 djm 498: int
499: default_ssh_port(void)
500: {
501: static int port;
502: struct servent *sp;
503:
504: if (port == 0) {
505: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
506: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
507: }
508: return port;
509: }
510:
511: /*
512: * Execute a command in a shell.
513: * Return its exit status or -1 on abnormal exit.
514: */
515: static int
516: execute_in_shell(const char *cmd)
517: {
1.243 dtucker 518: char *shell;
1.206 djm 519: pid_t pid;
1.337 djm 520: int status;
1.206 djm 521:
522: if ((shell = getenv("SHELL")) == NULL)
523: shell = _PATH_BSHELL;
1.308 djm 524:
525: if (access(shell, X_OK) == -1) {
526: fatal("Shell \"%s\" is not executable: %s",
527: shell, strerror(errno));
528: }
1.206 djm 529:
530: debug("Executing command: '%.500s'", cmd);
531:
532: /* Fork and execute the command. */
533: if ((pid = fork()) == 0) {
1.245 djm 534: char *argv[4];
1.206 djm 535:
1.337 djm 536: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 537: fatal_f("stdfd_devnull failed");
1.206 djm 538: closefrom(STDERR_FILENO + 1);
1.245 djm 539:
540: argv[0] = shell;
541: argv[1] = "-c";
542: argv[2] = xstrdup(cmd);
543: argv[3] = NULL;
1.206 djm 544:
545: execv(argv[0], argv);
546: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
547: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 548: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 549: kill(getpid(), SIGTERM);
550: _exit(1);
551: }
552: /* Parent. */
1.307 deraadt 553: if (pid == -1)
1.340 djm 554: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 555:
556: while (waitpid(pid, &status, 0) == -1) {
557: if (errno != EINTR && errno != EAGAIN)
1.340 djm 558: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 559: }
560: if (!WIFEXITED(status)) {
561: error("command '%.100s' exited abnormally", cmd);
562: return -1;
1.221 djm 563: }
1.206 djm 564: debug3("command returned status %d", WEXITSTATUS(status));
565: return WEXITSTATUS(status);
566: }
567:
568: /*
1.378 djm 569: * Check whether a local network interface address appears in CIDR pattern-
570: * list 'addrlist'. Returns 1 if matched or 0 otherwise.
571: */
572: static int
573: check_match_ifaddrs(const char *addrlist)
574: {
575: struct ifaddrs *ifa, *ifaddrs = NULL;
576: int r, found = 0;
577: char addr[NI_MAXHOST];
578: socklen_t salen;
579:
580: if (getifaddrs(&ifaddrs) != 0) {
581: error("match localnetwork: getifaddrs failed: %s",
582: strerror(errno));
583: return 0;
584: }
585: for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
586: if (ifa->ifa_addr == NULL || ifa->ifa_name == NULL ||
587: (ifa->ifa_flags & IFF_UP) == 0)
588: continue;
589: switch (ifa->ifa_addr->sa_family) {
590: case AF_INET:
591: salen = sizeof(struct sockaddr_in);
592: break;
593: case AF_INET6:
594: salen = sizeof(struct sockaddr_in6);
595: break;
596: case AF_LINK:
597: /* ignore */
598: continue;
599: default:
600: debug2_f("interface %s: unsupported address family %d",
601: ifa->ifa_name, ifa->ifa_addr->sa_family);
602: continue;
603: }
604: if ((r = getnameinfo(ifa->ifa_addr, salen, addr, sizeof(addr),
605: NULL, 0, NI_NUMERICHOST)) != 0) {
606: debug2_f("interface %s getnameinfo failed: %s",
607: ifa->ifa_name, gai_strerror(r));
608: continue;
609: }
610: debug3_f("interface %s addr %s", ifa->ifa_name, addr);
611: if (addr_match_cidr_list(addr, addrlist) == 1) {
612: debug3_f("matched interface %s: address %s in %s",
613: ifa->ifa_name, addr, addrlist);
614: found = 1;
615: break;
616: }
617: }
618: freeifaddrs(ifaddrs);
619: return found;
620: }
621:
622: /*
1.206 djm 623: * Parse and execute a Match directive.
624: */
625: static int
626: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 627: const char *host_arg, const char *original_host, int final_pass,
628: int *want_final_pass, const char *filename, int linenum)
1.206 djm 629: {
1.221 djm 630: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 631: const char *ruser;
1.221 djm 632: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 633: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 634: char uidstr[32];
1.206 djm 635:
636: /*
637: * Configuration is likely to be incomplete at this point so we
638: * must be prepared to use default values.
639: */
640: port = options->port <= 0 ? default_ssh_port() : options->port;
641: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 642: if (final_pass) {
1.250 djm 643: host = xstrdup(options->hostname);
644: } else if (options->hostname != NULL) {
1.212 djm 645: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 646: host = percent_expand(options->hostname,
647: "h", host_arg, (char *)NULL);
1.250 djm 648: } else {
1.211 djm 649: host = xstrdup(host_arg);
1.250 djm 650: }
1.206 djm 651:
1.221 djm 652: debug2("checking match for '%s' host %s originally %s",
653: cp, host, original_host);
654: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
1.356 djm 655: /* Terminate on comment */
656: if (*attrib == '#') {
657: cp = NULL; /* mark all arguments consumed */
658: break;
659: }
660: arg = criteria = NULL;
1.221 djm 661: this_result = 1;
1.374 jcs 662: if ((negate = (attrib[0] == '!')))
1.221 djm 663: attrib++;
1.356 djm 664: /* Criterion "all" has no argument and must appear alone */
1.213 dtucker 665: if (strcasecmp(attrib, "all") == 0) {
1.356 djm 666: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
667: *arg != '\0' && *arg != '#')) {
1.221 djm 668: error("%.200s line %d: '%s' cannot be combined "
669: "with other Match attributes",
670: filename, linenum, oattrib);
1.213 dtucker 671: result = -1;
672: goto out;
673: }
1.356 djm 674: if (arg != NULL && *arg == '#')
675: cp = NULL; /* mark all arguments consumed */
1.221 djm 676: if (result)
677: result = negate ? 0 : 1;
1.213 dtucker 678: goto out;
679: }
1.221 djm 680: attributes++;
1.356 djm 681: /* criteria "final" and "canonical" have no argument */
1.302 djm 682: if (strcasecmp(attrib, "canonical") == 0 ||
683: strcasecmp(attrib, "final") == 0) {
684: /*
685: * If the config requests "Match final" then remember
686: * this so we can perform a second pass later.
687: */
688: if (strcasecmp(attrib, "final") == 0 &&
689: want_final_pass != NULL)
690: *want_final_pass = 1;
691: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 692: if (r == (negate ? 1 : 0))
693: this_result = result = 0;
694: debug3("%.200s line %d: %smatched '%s'",
695: filename, linenum,
696: this_result ? "" : "not ", oattrib);
697: continue;
698: }
699: /* All other criteria require an argument */
1.356 djm 700: if ((arg = strdelim(&cp)) == NULL ||
701: *arg == '\0' || *arg == '#') {
1.206 djm 702: error("Missing Match criteria for %s", attrib);
1.211 djm 703: result = -1;
704: goto out;
1.206 djm 705: }
706: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 707: criteria = xstrdup(host);
1.235 djm 708: r = match_hostname(host, arg) == 1;
1.221 djm 709: if (r == (negate ? 1 : 0))
710: this_result = result = 0;
1.206 djm 711: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 712: criteria = xstrdup(original_host);
1.235 djm 713: r = match_hostname(original_host, arg) == 1;
1.221 djm 714: if (r == (negate ? 1 : 0))
715: this_result = result = 0;
1.206 djm 716: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 717: criteria = xstrdup(ruser);
1.235 djm 718: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 719: if (r == (negate ? 1 : 0))
720: this_result = result = 0;
1.206 djm 721: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 722: criteria = xstrdup(pw->pw_name);
1.235 djm 723: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 724: if (r == (negate ? 1 : 0))
725: this_result = result = 0;
1.378 djm 726: } else if (strcasecmp(attrib, "localnetwork") == 0) {
727: if (addr_match_cidr_list(NULL, arg) == -1) {
728: /* Error already printed */
729: result = -1;
730: goto out;
731: }
732: r = check_match_ifaddrs(arg) == 1;
1.379 ! djm 733: } else if (strcasecmp(attrib, "tagged") == 0) {
! 734: criteria = xstrdup(options->tag == NULL ? "" :
! 735: options->tag);
! 736: r = match_pattern_list(criteria, arg, 0) == 1;
1.378 djm 737: if (r == (negate ? 1 : 0))
738: this_result = result = 0;
1.210 djm 739: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 740: char *conn_hash_hex, *keyalias;
1.327 dtucker 741:
1.206 djm 742: if (gethostname(thishost, sizeof(thishost)) == -1)
743: fatal("gethostname: %s", strerror(errno));
744: strlcpy(shorthost, thishost, sizeof(shorthost));
745: shorthost[strcspn(thishost, ".")] = '\0';
746: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 747: snprintf(uidstr, sizeof(uidstr), "%llu",
748: (unsigned long long)pw->pw_uid);
1.327 dtucker 749: conn_hash_hex = ssh_connection_hash(thishost, host,
1.353 djm 750: portstr, ruser);
1.333 dtucker 751: keyalias = options->host_key_alias ?
752: options->host_key_alias : host;
1.206 djm 753:
754: cmd = percent_expand(arg,
1.327 dtucker 755: "C", conn_hash_hex,
1.206 djm 756: "L", shorthost,
757: "d", pw->pw_dir,
758: "h", host,
1.333 dtucker 759: "k", keyalias,
1.206 djm 760: "l", thishost,
1.221 djm 761: "n", original_host,
1.206 djm 762: "p", portstr,
763: "r", ruser,
764: "u", pw->pw_name,
1.288 djm 765: "i", uidstr,
1.206 djm 766: (char *)NULL);
1.327 dtucker 767: free(conn_hash_hex);
1.217 djm 768: if (result != 1) {
769: /* skip execution if prior predicate failed */
1.221 djm 770: debug3("%.200s line %d: skipped exec "
771: "\"%.100s\"", filename, linenum, cmd);
772: free(cmd);
773: continue;
774: }
775: r = execute_in_shell(cmd);
776: if (r == -1) {
777: fatal("%.200s line %d: match exec "
778: "'%.100s' error", filename,
779: linenum, cmd);
1.217 djm 780: }
1.221 djm 781: criteria = xstrdup(cmd);
1.206 djm 782: free(cmd);
1.221 djm 783: /* Force exit status to boolean */
784: r = r == 0;
785: if (r == (negate ? 1 : 0))
786: this_result = result = 0;
1.206 djm 787: } else {
788: error("Unsupported Match attribute %s", attrib);
1.211 djm 789: result = -1;
790: goto out;
1.206 djm 791: }
1.378 djm 792: debug3("%.200s line %d: %smatched '%s%s%.100s%s' ",
793: filename, linenum, this_result ? "": "not ", oattrib,
794: criteria == NULL ? "" : " \"",
795: criteria == NULL ? "" : criteria,
796: criteria == NULL ? "" : "\"");
1.221 djm 797: free(criteria);
1.213 dtucker 798: }
799: if (attributes == 0) {
800: error("One or more attributes required for Match");
801: result = -1;
802: goto out;
1.206 djm 803: }
1.221 djm 804: out:
805: if (result != -1)
806: debug2("match %sfound", result ? "" : "not ");
1.206 djm 807: *condition = cp;
1.211 djm 808: free(host);
1.206 djm 809: return result;
810: }
811:
1.286 djm 812: /* Remove environment variable by pattern */
813: static void
814: rm_env(Options *options, const char *arg, const char *filename, int linenum)
815: {
1.368 djm 816: u_int i, j, onum_send_env = options->num_send_env;
1.286 djm 817:
818: /* Remove an environment variable */
819: for (i = 0; i < options->num_send_env; ) {
1.367 millert 820: if (!match_pattern(options->send_env[i], arg + 1)) {
1.286 djm 821: i++;
822: continue;
823: }
824: debug3("%s line %d: removing environment %s",
1.367 millert 825: filename, linenum, options->send_env[i]);
1.286 djm 826: free(options->send_env[i]);
827: options->send_env[i] = NULL;
828: for (j = i; j < options->num_send_env - 1; j++) {
829: options->send_env[j] = options->send_env[j + 1];
830: options->send_env[j + 1] = NULL;
831: }
832: options->num_send_env--;
833: /* NB. don't increment i */
1.330 djm 834: }
835: if (onum_send_env != options->num_send_env) {
836: options->send_env = xrecallocarray(options->send_env,
837: onum_send_env, options->num_send_env,
838: sizeof(*options->send_env));
1.286 djm 839: }
840: }
841:
1.19 markus 842: /*
1.70 stevesk 843: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 844: */
1.26 markus 845: static OpCodes
1.199 djm 846: parse_token(const char *cp, const char *filename, int linenum,
847: const char *ignored_unknown)
1.1 deraadt 848: {
1.199 djm 849: int i;
1.1 deraadt 850:
1.17 markus 851: for (i = 0; keywords[i].name; i++)
1.199 djm 852: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 853: return keywords[i].opcode;
1.235 djm 854: if (ignored_unknown != NULL &&
855: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 856: return oIgnoredUnknownOption;
1.75 stevesk 857: error("%s: line %d: Bad configuration option: %s",
858: filename, linenum, cp);
1.17 markus 859: return oBadOption;
1.1 deraadt 860: }
861:
1.207 djm 862: /* Multistate option parsing */
863: struct multistate {
864: char *key;
865: int value;
866: };
867: static const struct multistate multistate_flag[] = {
868: { "true", 1 },
869: { "false", 0 },
870: { "yes", 1 },
871: { "no", 0 },
872: { NULL, -1 }
873: };
874: static const struct multistate multistate_yesnoask[] = {
875: { "true", 1 },
876: { "false", 0 },
877: { "yes", 1 },
878: { "no", 0 },
879: { "ask", 2 },
880: { NULL, -1 }
881: };
1.278 djm 882: static const struct multistate multistate_strict_hostkey[] = {
883: { "true", SSH_STRICT_HOSTKEY_YES },
884: { "false", SSH_STRICT_HOSTKEY_OFF },
885: { "yes", SSH_STRICT_HOSTKEY_YES },
886: { "no", SSH_STRICT_HOSTKEY_OFF },
887: { "ask", SSH_STRICT_HOSTKEY_ASK },
888: { "off", SSH_STRICT_HOSTKEY_OFF },
889: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
890: { NULL, -1 }
891: };
1.246 jcs 892: static const struct multistate multistate_yesnoaskconfirm[] = {
893: { "true", 1 },
894: { "false", 0 },
895: { "yes", 1 },
896: { "no", 0 },
897: { "ask", 2 },
898: { "confirm", 3 },
899: { NULL, -1 }
900: };
1.207 djm 901: static const struct multistate multistate_addressfamily[] = {
902: { "inet", AF_INET },
903: { "inet6", AF_INET6 },
904: { "any", AF_UNSPEC },
905: { NULL, -1 }
906: };
907: static const struct multistate multistate_controlmaster[] = {
908: { "true", SSHCTL_MASTER_YES },
909: { "yes", SSHCTL_MASTER_YES },
910: { "false", SSHCTL_MASTER_NO },
911: { "no", SSHCTL_MASTER_NO },
912: { "auto", SSHCTL_MASTER_AUTO },
913: { "ask", SSHCTL_MASTER_ASK },
914: { "autoask", SSHCTL_MASTER_AUTO_ASK },
915: { NULL, -1 }
916: };
917: static const struct multistate multistate_tunnel[] = {
918: { "ethernet", SSH_TUNMODE_ETHERNET },
919: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
920: { "true", SSH_TUNMODE_DEFAULT },
921: { "yes", SSH_TUNMODE_DEFAULT },
922: { "false", SSH_TUNMODE_NO },
923: { "no", SSH_TUNMODE_NO },
924: { NULL, -1 }
925: };
926: static const struct multistate multistate_requesttty[] = {
927: { "true", REQUEST_TTY_YES },
928: { "yes", REQUEST_TTY_YES },
929: { "false", REQUEST_TTY_NO },
930: { "no", REQUEST_TTY_NO },
931: { "force", REQUEST_TTY_FORCE },
932: { "auto", REQUEST_TTY_AUTO },
933: { NULL, -1 }
934: };
1.359 djm 935: static const struct multistate multistate_sessiontype[] = {
936: { "none", SESSION_TYPE_NONE },
937: { "subsystem", SESSION_TYPE_SUBSYSTEM },
938: { "default", SESSION_TYPE_DEFAULT },
939: { NULL, -1 }
940: };
1.209 djm 941: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 942: { "true", SSH_CANONICALISE_YES },
943: { "false", SSH_CANONICALISE_NO },
944: { "yes", SSH_CANONICALISE_YES },
945: { "no", SSH_CANONICALISE_NO },
946: { "always", SSH_CANONICALISE_ALWAYS },
947: { NULL, -1 }
948: };
1.364 djm 949: static const struct multistate multistate_pubkey_auth[] = {
950: { "true", SSH_PUBKEY_AUTH_ALL },
951: { "false", SSH_PUBKEY_AUTH_NO },
952: { "yes", SSH_PUBKEY_AUTH_ALL },
953: { "no", SSH_PUBKEY_AUTH_NO },
954: { "unbound", SSH_PUBKEY_AUTH_UNBOUND },
955: { "host-bound", SSH_PUBKEY_AUTH_HBOUND },
956: { NULL, -1 }
957: };
1.322 dtucker 958: static const struct multistate multistate_compression[] = {
959: #ifdef WITH_ZLIB
960: { "yes", COMP_ZLIB },
961: #endif
962: { "no", COMP_NONE },
963: { NULL, -1 }
964: };
1.207 djm 965:
1.334 djm 966: static int
967: parse_multistate_value(const char *arg, const char *filename, int linenum,
968: const struct multistate *multistate_ptr)
969: {
970: int i;
971:
1.344 djm 972: if (!arg || *arg == '\0') {
973: error("%s line %d: missing argument.", filename, linenum);
974: return -1;
975: }
1.334 djm 976: for (i = 0; multistate_ptr[i].key != NULL; i++) {
977: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
978: return multistate_ptr[i].value;
979: }
980: return -1;
981: }
982:
1.19 markus 983: /*
984: * Processes a single option line as used in the configuration files. This
985: * only sets those values that have not already been set.
986: */
1.14 markus 987: int
1.206 djm 988: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 989: const char *original_host, char *line, const char *filename,
990: int linenum, int *activep, int flags)
1.1 deraadt 991: {
1.252 djm 992: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 993: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 994: }
995:
996: #define WHITESPACE " \t\r\n"
997: static int
998: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
999: const char *original_host, char *line, const char *filename,
1.302 djm 1000: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 1001: {
1.366 dtucker 1002: char *str, **charptr, *endofnumber, *keyword, *arg, *arg2, *p;
1.339 djm 1003: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 1004: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 1005: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.377 djm 1006: int remotefwd, dynamicfwd, ca_only = 0;
1.164 dtucker 1007: LogLevel *log_level_ptr;
1.271 dtucker 1008: SyslogFacility *log_facility_ptr;
1.201 dtucker 1009: long long val64;
1.102 markus 1010: size_t len;
1.220 millert 1011: struct Forward fwd;
1.207 djm 1012: const struct multistate *multistate_ptr;
1.208 djm 1013: struct allowed_cname *cname;
1.252 djm 1014: glob_t gl;
1.281 dtucker 1015: const char *errstr;
1.356 djm 1016: char **oav = NULL, **av;
1017: int oac = 0, ac;
1018: int ret = -1;
1.106 djm 1019:
1.206 djm 1020: if (activep == NULL) { /* We are processing a command line directive */
1021: cmdline = 1;
1022: activep = &cmdline;
1023: }
1024:
1.267 djm 1025: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 1026: if ((len = strlen(line)) == 0)
1027: return 0;
1028: for (len--; len > 0; len--) {
1.267 djm 1029: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 1030: break;
1031: line[len] = '\0';
1032: }
1.1 deraadt 1033:
1.356 djm 1034: str = line;
1.42 provos 1035: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 1036: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 1037: return 0;
1.42 provos 1038: /* Ignore leading whitespace. */
1039: if (*keyword == '\0')
1.356 djm 1040: keyword = strdelim(&str);
1.56 deraadt 1041: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 1042: return 0;
1.199 djm 1043: /* Match lowercase keyword */
1.207 djm 1044: lowercase(keyword);
1.17 markus 1045:
1.356 djm 1046: /* Prepare to parse remainder of line */
1047: if (str != NULL)
1048: str += strspn(str, WHITESPACE);
1049: if (str == NULL || *str == '\0') {
1050: error("%s line %d: no argument after keyword \"%s\"",
1051: filename, linenum, keyword);
1052: return -1;
1053: }
1.199 djm 1054: opcode = parse_token(keyword, filename, linenum,
1055: options->ignored_unknown);
1.356 djm 1056: if (argv_split(str, &oac, &oav, 1) != 0) {
1057: error("%s line %d: invalid quotes", filename, linenum);
1058: return -1;
1059: }
1060: ac = oac;
1061: av = oav;
1.17 markus 1062:
1063: switch (opcode) {
1064: case oBadOption:
1.19 markus 1065: /* don't panic, but count bad options */
1.356 djm 1066: goto out;
1.273 djm 1067: case oIgnore:
1.356 djm 1068: argv_consume(&ac);
1069: break;
1.199 djm 1070: case oIgnoredUnknownOption:
1071: debug("%s line %d: Ignored unknown option \"%s\"",
1072: filename, linenum, keyword);
1.356 djm 1073: argv_consume(&ac);
1074: break;
1.111 djm 1075: case oConnectTimeout:
1076: intptr = &options->connection_timeout;
1.127 markus 1077: parse_time:
1.356 djm 1078: arg = argv_next(&ac, &av);
1.344 djm 1079: if (!arg || *arg == '\0') {
1080: error("%s line %d: missing time value.",
1.111 djm 1081: filename, linenum);
1.356 djm 1082: goto out;
1.344 djm 1083: }
1.221 djm 1084: if (strcmp(arg, "none") == 0)
1085: value = -1;
1.344 djm 1086: else if ((value = convtime(arg)) == -1) {
1087: error("%s line %d: invalid time value.",
1.111 djm 1088: filename, linenum);
1.356 djm 1089: goto out;
1.344 djm 1090: }
1.160 dtucker 1091: if (*activep && *intptr == -1)
1.111 djm 1092: *intptr = value;
1093: break;
1094:
1.17 markus 1095: case oForwardAgent:
1096: intptr = &options->forward_agent;
1.319 djm 1097:
1.356 djm 1098: arg = argv_next(&ac, &av);
1.344 djm 1099: if (!arg || *arg == '\0') {
1100: error("%s line %d: missing argument.",
1.319 djm 1101: filename, linenum);
1.356 djm 1102: goto out;
1.344 djm 1103: }
1.319 djm 1104:
1105: value = -1;
1106: multistate_ptr = multistate_flag;
1107: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1108: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1109: value = multistate_ptr[i].value;
1110: break;
1111: }
1112: }
1113: if (value != -1) {
1114: if (*activep && *intptr == -1)
1115: *intptr = value;
1116: break;
1117: }
1118: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1119: if (*activep && *intptr == -1)
1120: *intptr = 1;
1121:
1122: charptr = &options->forward_agent_sock_path;
1123: goto parse_agent_path;
1124:
1125: case oForwardX11:
1126: intptr = &options->forward_x11;
1.207 djm 1127: parse_flag:
1128: multistate_ptr = multistate_flag;
1129: parse_multistate:
1.356 djm 1130: arg = argv_next(&ac, &av);
1.334 djm 1131: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1132: multistate_ptr)) == -1) {
1.344 djm 1133: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1134: filename, linenum, arg);
1.356 djm 1135: goto out;
1.334 djm 1136: }
1.17 markus 1137: if (*activep && *intptr == -1)
1138: *intptr = value;
1139: break;
1140:
1.123 markus 1141: case oForwardX11Trusted:
1142: intptr = &options->forward_x11_trusted;
1143: goto parse_flag;
1.221 djm 1144:
1.186 djm 1145: case oForwardX11Timeout:
1146: intptr = &options->forward_x11_timeout;
1147: goto parse_time;
1.123 markus 1148:
1.17 markus 1149: case oGatewayPorts:
1.220 millert 1150: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1151: goto parse_flag;
1152:
1.153 markus 1153: case oExitOnForwardFailure:
1154: intptr = &options->exit_on_forward_failure;
1155: goto parse_flag;
1156:
1.17 markus 1157: case oPasswordAuthentication:
1158: intptr = &options->password_authentication;
1159: goto parse_flag;
1160:
1.48 markus 1161: case oKbdInteractiveAuthentication:
1162: intptr = &options->kbd_interactive_authentication;
1163: goto parse_flag;
1164:
1165: case oKbdInteractiveDevices:
1166: charptr = &options->kbd_interactive_devices;
1167: goto parse_string;
1168:
1.50 markus 1169: case oPubkeyAuthentication:
1.364 djm 1170: multistate_ptr = multistate_pubkey_auth;
1.50 markus 1171: intptr = &options->pubkey_authentication;
1.364 djm 1172: goto parse_multistate;
1.30 markus 1173:
1.72 markus 1174: case oHostbasedAuthentication:
1175: intptr = &options->hostbased_authentication;
1176: goto parse_flag;
1177:
1.118 markus 1178: case oGssAuthentication:
1179: intptr = &options->gss_authentication;
1180: goto parse_flag;
1181:
1182: case oGssDelegateCreds:
1183: intptr = &options->gss_deleg_creds;
1184: goto parse_flag;
1185:
1.17 markus 1186: case oBatchMode:
1187: intptr = &options->batch_mode;
1188: goto parse_flag;
1189:
1190: case oCheckHostIP:
1191: intptr = &options->check_host_ip;
1.167 grunk 1192: goto parse_flag;
1.17 markus 1193:
1.107 jakob 1194: case oVerifyHostKeyDNS:
1195: intptr = &options->verify_host_key_dns;
1.207 djm 1196: multistate_ptr = multistate_yesnoask;
1197: goto parse_multistate;
1.107 jakob 1198:
1.17 markus 1199: case oStrictHostKeyChecking:
1200: intptr = &options->strict_host_key_checking;
1.278 djm 1201: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1202: goto parse_multistate;
1.17 markus 1203:
1204: case oCompression:
1205: intptr = &options->compression;
1.322 dtucker 1206: multistate_ptr = multistate_compression;
1207: goto parse_multistate;
1.17 markus 1208:
1.126 markus 1209: case oTCPKeepAlive:
1210: intptr = &options->tcp_keep_alive;
1.17 markus 1211: goto parse_flag;
1212:
1.91 markus 1213: case oNoHostAuthenticationForLocalhost:
1214: intptr = &options->no_host_authentication_for_localhost;
1215: goto parse_flag;
1216:
1.17 markus 1217: case oNumberOfPasswordPrompts:
1218: intptr = &options->number_of_password_prompts;
1219: goto parse_int;
1220:
1.105 markus 1221: case oRekeyLimit:
1.356 djm 1222: arg = argv_next(&ac, &av);
1.344 djm 1223: if (!arg || *arg == '\0') {
1224: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1225: linenum);
1.356 djm 1226: goto out;
1.344 djm 1227: }
1.198 dtucker 1228: if (strcmp(arg, "default") == 0) {
1229: val64 = 0;
1230: } else {
1.344 djm 1231: if (scan_scaled(arg, &val64) == -1) {
1232: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1233: filename, linenum, arg, strerror(errno));
1.356 djm 1234: goto out;
1.344 djm 1235: }
1236: if (val64 != 0 && val64 < 16) {
1237: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1238: filename, linenum);
1.356 djm 1239: goto out;
1.344 djm 1240: }
1.105 markus 1241: }
1.165 djm 1242: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1243: options->rekey_limit = val64;
1.356 djm 1244: if (ac != 0) { /* optional rekey interval present */
1245: if (strcmp(av[0], "none") == 0) {
1246: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1247: break;
1248: }
1249: intptr = &options->rekey_interval;
1250: goto parse_time;
1251: }
1.105 markus 1252: break;
1253:
1.17 markus 1254: case oIdentityFile:
1.356 djm 1255: arg = argv_next(&ac, &av);
1.344 djm 1256: if (!arg || *arg == '\0') {
1257: error("%.200s line %d: Missing argument.",
1258: filename, linenum);
1.356 djm 1259: goto out;
1.344 djm 1260: }
1.17 markus 1261: if (*activep) {
1.50 markus 1262: intptr = &options->num_identity_files;
1.344 djm 1263: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1264: error("%.200s line %d: Too many identity files "
1265: "specified (max %d).", filename, linenum,
1266: SSH_MAX_IDENTITY_FILES);
1.356 djm 1267: goto out;
1.344 djm 1268: }
1.221 djm 1269: add_identity_file(options, NULL,
1270: arg, flags & SSHCONF_USERCONF);
1.17 markus 1271: }
1272: break;
1273:
1.241 djm 1274: case oCertificateFile:
1.356 djm 1275: arg = argv_next(&ac, &av);
1.344 djm 1276: if (!arg || *arg == '\0') {
1277: error("%.200s line %d: Missing argument.",
1.241 djm 1278: filename, linenum);
1.356 djm 1279: goto out;
1.344 djm 1280: }
1.241 djm 1281: if (*activep) {
1282: intptr = &options->num_certificate_files;
1283: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1284: error("%.200s line %d: Too many certificate "
1.241 djm 1285: "files specified (max %d).",
1286: filename, linenum,
1287: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1288: goto out;
1.241 djm 1289: }
1290: add_certificate_file(options, arg,
1291: flags & SSHCONF_USERCONF);
1292: }
1293: break;
1294:
1.34 markus 1295: case oXAuthLocation:
1296: charptr=&options->xauth_location;
1297: goto parse_string;
1298:
1.17 markus 1299: case oUser:
1300: charptr = &options->user;
1301: parse_string:
1.356 djm 1302: arg = argv_next(&ac, &av);
1.344 djm 1303: if (!arg || *arg == '\0') {
1304: error("%.200s line %d: Missing argument.",
1.193 djm 1305: filename, linenum);
1.356 djm 1306: goto out;
1.344 djm 1307: }
1.17 markus 1308: if (*activep && *charptr == NULL)
1.38 provos 1309: *charptr = xstrdup(arg);
1.17 markus 1310: break;
1311:
1312: case oGlobalKnownHostsFile:
1.193 djm 1313: cpptr = (char **)&options->system_hostfiles;
1314: uintptr = &options->num_system_hostfiles;
1315: max_entries = SSH_MAX_HOSTS_FILES;
1316: parse_char_array:
1.356 djm 1317: i = 0;
1.357 djm 1318: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1319: while ((arg = argv_next(&ac, &av)) != NULL) {
1320: if (*arg == '\0') {
1321: error("%s line %d: keyword %s empty argument",
1322: filename, linenum, keyword);
1323: goto out;
1324: }
1325: /* Allow "none" only in first position */
1326: if (strcasecmp(arg, "none") == 0) {
1327: if (i > 0 || ac > 0) {
1328: error("%s line %d: keyword %s \"none\" "
1329: "argument must appear alone.",
1330: filename, linenum, keyword);
1331: goto out;
1332: }
1333: }
1334: i++;
1.357 djm 1335: if (*activep && value) {
1.344 djm 1336: if ((*uintptr) >= max_entries) {
1.356 djm 1337: error("%s line %d: too many %s "
1338: "entries.", filename, linenum,
1339: keyword);
1340: goto out;
1.344 djm 1341: }
1.193 djm 1342: cpptr[(*uintptr)++] = xstrdup(arg);
1343: }
1344: }
1.356 djm 1345: break;
1.17 markus 1346:
1347: case oUserKnownHostsFile:
1.193 djm 1348: cpptr = (char **)&options->user_hostfiles;
1349: uintptr = &options->num_user_hostfiles;
1350: max_entries = SSH_MAX_HOSTS_FILES;
1351: goto parse_char_array;
1.27 markus 1352:
1.306 jmc 1353: case oHostname:
1.17 markus 1354: charptr = &options->hostname;
1355: goto parse_string;
1356:
1.379 ! djm 1357: case oTag:
! 1358: charptr = &options->tag;
! 1359: goto parse_string;
! 1360:
1.52 markus 1361: case oHostKeyAlias:
1362: charptr = &options->host_key_alias;
1363: goto parse_string;
1364:
1.67 markus 1365: case oPreferredAuthentications:
1366: charptr = &options->preferred_authentications;
1367: goto parse_string;
1368:
1.77 markus 1369: case oBindAddress:
1370: charptr = &options->bind_address;
1371: goto parse_string;
1372:
1.282 djm 1373: case oBindInterface:
1374: charptr = &options->bind_interface;
1375: goto parse_string;
1376:
1.183 markus 1377: case oPKCS11Provider:
1378: charptr = &options->pkcs11_provider;
1.86 markus 1379: goto parse_string;
1.85 jakob 1380:
1.310 djm 1381: case oSecurityKeyProvider:
1382: charptr = &options->sk_provider;
1383: goto parse_string;
1384:
1.346 djm 1385: case oKnownHostsCommand:
1386: charptr = &options->known_hosts_command;
1387: goto parse_command;
1388:
1.17 markus 1389: case oProxyCommand:
1.144 reyk 1390: charptr = &options->proxy_command;
1.257 djm 1391: /* Ignore ProxyCommand if ProxyJump already specified */
1392: if (options->jump_host != NULL)
1393: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1394: parse_command:
1.356 djm 1395: if (str == NULL) {
1.344 djm 1396: error("%.200s line %d: Missing argument.",
1397: filename, linenum);
1.356 djm 1398: goto out;
1.344 djm 1399: }
1.356 djm 1400: len = strspn(str, WHITESPACE "=");
1.17 markus 1401: if (*activep && *charptr == NULL)
1.356 djm 1402: *charptr = xstrdup(str + len);
1403: argv_consume(&ac);
1404: break;
1.17 markus 1405:
1.257 djm 1406: case oProxyJump:
1.356 djm 1407: if (str == NULL) {
1.344 djm 1408: error("%.200s line %d: Missing argument.",
1.257 djm 1409: filename, linenum);
1.356 djm 1410: goto out;
1.257 djm 1411: }
1.356 djm 1412: len = strspn(str, WHITESPACE "=");
1413: /* XXX use argv? */
1414: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1415: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1416: filename, linenum, str + len);
1417: goto out;
1.257 djm 1418: }
1.356 djm 1419: argv_consume(&ac);
1420: break;
1.257 djm 1421:
1.17 markus 1422: case oPort:
1.356 djm 1423: arg = argv_next(&ac, &av);
1.344 djm 1424: if (!arg || *arg == '\0') {
1425: error("%.200s line %d: Missing argument.",
1.300 naddy 1426: filename, linenum);
1.356 djm 1427: goto out;
1.344 djm 1428: }
1.300 naddy 1429: value = a2port(arg);
1.344 djm 1430: if (value <= 0) {
1431: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1432: filename, linenum, arg);
1.356 djm 1433: goto out;
1.344 djm 1434: }
1.300 naddy 1435: if (*activep && options->port == -1)
1436: options->port = value;
1437: break;
1438:
1439: case oConnectionAttempts:
1440: intptr = &options->connection_attempts;
1.17 markus 1441: parse_int:
1.356 djm 1442: arg = argv_next(&ac, &av);
1.344 djm 1443: if ((errstr = atoi_err(arg, &value)) != NULL) {
1444: error("%s line %d: integer value %s.",
1.281 dtucker 1445: filename, linenum, errstr);
1.356 djm 1446: goto out;
1.344 djm 1447: }
1.17 markus 1448: if (*activep && *intptr == -1)
1449: *intptr = value;
1450: break;
1451:
1.25 markus 1452: case oCiphers:
1.356 djm 1453: arg = argv_next(&ac, &av);
1.344 djm 1454: if (!arg || *arg == '\0') {
1455: error("%.200s line %d: Missing argument.",
1456: filename, linenum);
1.356 djm 1457: goto out;
1.344 djm 1458: }
1.309 naddy 1459: if (*arg != '-' &&
1.344 djm 1460: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1461: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1462: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1463: goto out;
1.344 djm 1464: }
1.25 markus 1465: if (*activep && options->ciphers == NULL)
1.38 provos 1466: options->ciphers = xstrdup(arg);
1.25 markus 1467: break;
1468:
1.62 markus 1469: case oMacs:
1.356 djm 1470: arg = argv_next(&ac, &av);
1.344 djm 1471: if (!arg || *arg == '\0') {
1472: error("%.200s line %d: Missing argument.",
1473: filename, linenum);
1.356 djm 1474: goto out;
1.344 djm 1475: }
1.309 naddy 1476: if (*arg != '-' &&
1.344 djm 1477: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1478: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1479: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1480: goto out;
1.344 djm 1481: }
1.62 markus 1482: if (*activep && options->macs == NULL)
1483: options->macs = xstrdup(arg);
1484: break;
1485:
1.189 djm 1486: case oKexAlgorithms:
1.356 djm 1487: arg = argv_next(&ac, &av);
1.344 djm 1488: if (!arg || *arg == '\0') {
1489: error("%.200s line %d: Missing argument.",
1.189 djm 1490: filename, linenum);
1.356 djm 1491: goto out;
1.344 djm 1492: }
1.268 djm 1493: if (*arg != '-' &&
1.309 naddy 1494: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1495: arg + 1 : arg)) {
1496: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1497: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1498: goto out;
1.344 djm 1499: }
1.189 djm 1500: if (*activep && options->kex_algorithms == NULL)
1501: options->kex_algorithms = xstrdup(arg);
1502: break;
1503:
1.76 markus 1504: case oHostKeyAlgorithms:
1.238 markus 1505: charptr = &options->hostkeyalgorithms;
1.377 djm 1506: ca_only = 0;
1.349 dtucker 1507: parse_pubkey_algos:
1.356 djm 1508: arg = argv_next(&ac, &av);
1.344 djm 1509: if (!arg || *arg == '\0') {
1510: error("%.200s line %d: Missing argument.",
1.238 markus 1511: filename, linenum);
1.356 djm 1512: goto out;
1.344 djm 1513: }
1.268 djm 1514: if (*arg != '-' &&
1.309 naddy 1515: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.377 djm 1516: arg + 1 : arg, 1, ca_only)) {
1.344 djm 1517: error("%s line %d: Bad key types '%s'.",
1518: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1519: goto out;
1.344 djm 1520: }
1.238 markus 1521: if (*activep && *charptr == NULL)
1522: *charptr = xstrdup(arg);
1.76 markus 1523: break;
1524:
1.298 djm 1525: case oCASignatureAlgorithms:
1526: charptr = &options->ca_sign_algorithms;
1.377 djm 1527: ca_only = 1;
1.349 dtucker 1528: goto parse_pubkey_algos;
1.298 djm 1529:
1.17 markus 1530: case oLogLevel:
1.164 dtucker 1531: log_level_ptr = &options->log_level;
1.356 djm 1532: arg = argv_next(&ac, &av);
1.38 provos 1533: value = log_level_number(arg);
1.344 djm 1534: if (value == SYSLOG_LEVEL_NOT_SET) {
1535: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1536: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1537: goto out;
1.344 djm 1538: }
1.164 dtucker 1539: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1540: *log_level_ptr = (LogLevel) value;
1.17 markus 1541: break;
1542:
1.271 dtucker 1543: case oLogFacility:
1544: log_facility_ptr = &options->log_facility;
1.356 djm 1545: arg = argv_next(&ac, &av);
1.271 dtucker 1546: value = log_facility_number(arg);
1.344 djm 1547: if (value == SYSLOG_FACILITY_NOT_SET) {
1548: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1549: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1550: goto out;
1.344 djm 1551: }
1.271 dtucker 1552: if (*log_facility_ptr == -1)
1553: *log_facility_ptr = (SyslogFacility) value;
1554: break;
1555:
1.339 djm 1556: case oLogVerbose:
1557: cppptr = &options->log_verbose;
1558: uintptr = &options->num_log_verbose;
1.356 djm 1559: i = 0;
1560: while ((arg = argv_next(&ac, &av)) != NULL) {
1561: if (*arg == '\0') {
1562: error("%s line %d: keyword %s empty argument",
1563: filename, linenum, keyword);
1564: goto out;
1565: }
1566: /* Allow "none" only in first position */
1567: if (strcasecmp(arg, "none") == 0) {
1568: if (i > 0 || ac > 0) {
1569: error("%s line %d: keyword %s \"none\" "
1570: "argument must appear alone.",
1571: filename, linenum, keyword);
1572: goto out;
1573: }
1574: }
1575: i++;
1576: if (*activep && *uintptr == 0) {
1.339 djm 1577: *cppptr = xrecallocarray(*cppptr, *uintptr,
1578: *uintptr + 1, sizeof(**cppptr));
1579: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1580: }
1581: }
1.356 djm 1582: break;
1.339 djm 1583:
1.88 stevesk 1584: case oLocalForward:
1.17 markus 1585: case oRemoteForward:
1.168 stevesk 1586: case oDynamicForward:
1.356 djm 1587: arg = argv_next(&ac, &av);
1.344 djm 1588: if (!arg || *arg == '\0') {
1589: error("%.200s line %d: Missing argument.",
1.88 stevesk 1590: filename, linenum);
1.356 djm 1591: goto out;
1.344 djm 1592: }
1.135 djm 1593:
1.279 markus 1594: remotefwd = (opcode == oRemoteForward);
1595: dynamicfwd = (opcode == oDynamicForward);
1596:
1597: if (!dynamicfwd) {
1.356 djm 1598: arg2 = argv_next(&ac, &av);
1.279 markus 1599: if (arg2 == NULL || *arg2 == '\0') {
1600: if (remotefwd)
1601: dynamicfwd = 1;
1.344 djm 1602: else {
1603: error("%.200s line %d: Missing target "
1.279 markus 1604: "argument.", filename, linenum);
1.356 djm 1605: goto out;
1.344 djm 1606: }
1.279 markus 1607: } else {
1608: /* construct a string for parse_forward */
1609: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1610: arg2);
1611: }
1612: }
1613: if (dynamicfwd)
1.168 stevesk 1614: strlcpy(fwdarg, arg, sizeof(fwdarg));
1615:
1.344 djm 1616: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1617: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1618: filename, linenum);
1.356 djm 1619: goto out;
1.344 djm 1620: }
1.135 djm 1621:
1.88 stevesk 1622: if (*activep) {
1.279 markus 1623: if (remotefwd) {
1624: add_remote_forward(options, &fwd);
1625: } else {
1.135 djm 1626: add_local_forward(options, &fwd);
1.279 markus 1627: }
1.88 stevesk 1628: }
1.17 markus 1629: break;
1.71 markus 1630:
1.351 markus 1631: case oPermitRemoteOpen:
1632: uintptr = &options->num_permitted_remote_opens;
1633: cppptr = &options->permitted_remote_opens;
1634: uvalue = *uintptr; /* modified later */
1.371 djm 1635: i = 0;
1.356 djm 1636: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1637: arg2 = xstrdup(arg);
1.371 djm 1638: /* Allow any/none only in first position */
1639: if (strcasecmp(arg, "none") == 0 ||
1640: strcasecmp(arg, "any") == 0) {
1641: if (i > 0 || ac > 0) {
1642: error("%s line %d: keyword %s \"%s\" "
1643: "argument must appear alone.",
1644: filename, linenum, keyword, arg);
1.376 djm 1645: free(arg2);
1.371 djm 1646: goto out;
1647: }
1648: } else {
1649: p = hpdelim(&arg);
1650: if (p == NULL) {
1651: fatal("%s line %d: missing host in %s",
1652: filename, linenum,
1653: lookup_opcode_name(opcode));
1654: }
1655: p = cleanhostname(p);
1656: /*
1657: * don't want to use permitopen_port to avoid
1658: * dependency on channels.[ch] here.
1659: */
1660: if (arg == NULL || (strcmp(arg, "*") != 0 &&
1661: a2port(arg) <= 0)) {
1662: fatal("%s line %d: bad port number "
1663: "in %s", filename, linenum,
1664: lookup_opcode_name(opcode));
1665: }
1.351 markus 1666: }
1667: if (*activep && uvalue == 0) {
1668: opt_array_append(filename, linenum,
1669: lookup_opcode_name(opcode),
1670: cppptr, uintptr, arg2);
1671: }
1672: free(arg2);
1.371 djm 1673: i++;
1.351 markus 1674: }
1.371 djm 1675: if (i == 0)
1676: fatal("%s line %d: missing %s specification",
1677: filename, linenum, lookup_opcode_name(opcode));
1.351 markus 1678: break;
1679:
1.90 stevesk 1680: case oClearAllForwardings:
1681: intptr = &options->clear_forwardings;
1682: goto parse_flag;
1683:
1.17 markus 1684: case oHost:
1.344 djm 1685: if (cmdline) {
1686: error("Host directive not supported as a command-line "
1.206 djm 1687: "option");
1.356 djm 1688: goto out;
1.344 djm 1689: }
1.17 markus 1690: *activep = 0;
1.191 djm 1691: arg2 = NULL;
1.356 djm 1692: while ((arg = argv_next(&ac, &av)) != NULL) {
1693: if (*arg == '\0') {
1694: error("%s line %d: keyword %s empty argument",
1695: filename, linenum, keyword);
1696: goto out;
1697: }
1698: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1699: argv_consume(&ac);
1.252 djm 1700: break;
1.356 djm 1701: }
1.191 djm 1702: negated = *arg == '!';
1703: if (negated)
1704: arg++;
1.38 provos 1705: if (match_pattern(host, arg)) {
1.191 djm 1706: if (negated) {
1707: debug("%.200s line %d: Skipping Host "
1708: "block because of negated match "
1709: "for %.100s", filename, linenum,
1710: arg);
1711: *activep = 0;
1.356 djm 1712: argv_consume(&ac);
1.191 djm 1713: break;
1714: }
1715: if (!*activep)
1716: arg2 = arg; /* logged below */
1.17 markus 1717: *activep = 1;
1718: }
1.191 djm 1719: }
1720: if (*activep)
1721: debug("%.200s line %d: Applying options for %.100s",
1722: filename, linenum, arg2);
1.356 djm 1723: break;
1.17 markus 1724:
1.206 djm 1725: case oMatch:
1.344 djm 1726: if (cmdline) {
1727: error("Host directive not supported as a command-line "
1.206 djm 1728: "option");
1.356 djm 1729: goto out;
1.344 djm 1730: }
1.356 djm 1731: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1732: flags & SSHCONF_FINAL, want_final_pass,
1733: filename, linenum);
1.344 djm 1734: if (value < 0) {
1735: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1736: linenum);
1.356 djm 1737: goto out;
1.344 djm 1738: }
1.252 djm 1739: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1740: /*
1741: * If match_cfg_line() didn't consume all its arguments then
1742: * arrange for the extra arguments check below to fail.
1743: */
1744:
1745: if (str == NULL || *str == '\0')
1746: argv_consume(&ac);
1.206 djm 1747: break;
1748:
1.17 markus 1749: case oEscapeChar:
1750: intptr = &options->escape_char;
1.356 djm 1751: arg = argv_next(&ac, &av);
1.344 djm 1752: if (!arg || *arg == '\0') {
1753: error("%.200s line %d: Missing argument.",
1754: filename, linenum);
1.356 djm 1755: goto out;
1.344 djm 1756: }
1.236 djm 1757: if (strcmp(arg, "none") == 0)
1758: value = SSH_ESCAPECHAR_NONE;
1759: else if (arg[1] == '\0')
1760: value = (u_char) arg[0];
1761: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1762: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1763: value = (u_char) arg[1] & 31;
1.17 markus 1764: else {
1.344 djm 1765: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1766: filename, linenum);
1.356 djm 1767: goto out;
1.17 markus 1768: }
1769: if (*activep && *intptr == -1)
1770: *intptr = value;
1.112 djm 1771: break;
1772:
1773: case oAddressFamily:
1.114 djm 1774: intptr = &options->address_family;
1.207 djm 1775: multistate_ptr = multistate_addressfamily;
1776: goto parse_multistate;
1.17 markus 1777:
1.101 markus 1778: case oEnableSSHKeysign:
1779: intptr = &options->enable_ssh_keysign;
1780: goto parse_flag;
1781:
1.128 markus 1782: case oIdentitiesOnly:
1783: intptr = &options->identities_only;
1784: goto parse_flag;
1785:
1.127 markus 1786: case oServerAliveInterval:
1787: intptr = &options->server_alive_interval;
1788: goto parse_time;
1789:
1790: case oServerAliveCountMax:
1791: intptr = &options->server_alive_count_max;
1792: goto parse_int;
1793:
1.130 djm 1794: case oSendEnv:
1.356 djm 1795: while ((arg = argv_next(&ac, &av)) != NULL) {
1796: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1797: error("%s line %d: Invalid environment name.",
1.130 djm 1798: filename, linenum);
1.356 djm 1799: goto out;
1.344 djm 1800: }
1.137 djm 1801: if (!*activep)
1802: continue;
1.286 djm 1803: if (*arg == '-') {
1804: /* Removing an env var */
1805: rm_env(options, arg, filename, linenum);
1806: continue;
1807: }
1.368 djm 1808: opt_array_append(filename, linenum,
1809: lookup_opcode_name(opcode),
1810: &options->send_env, &options->num_send_env, arg);
1.130 djm 1811: }
1812: break;
1813:
1.290 djm 1814: case oSetEnv:
1815: value = options->num_setenv;
1.356 djm 1816: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1817: if (strchr(arg, '=') == NULL) {
1818: error("%s line %d: Invalid SetEnv.",
1.290 djm 1819: filename, linenum);
1.356 djm 1820: goto out;
1.344 djm 1821: }
1.290 djm 1822: if (!*activep || value != 0)
1823: continue;
1.368 djm 1824: if (lookup_setenv_in_list(arg, options->setenv,
1825: options->num_setenv) != NULL) {
1826: debug2("%s line %d: ignoring duplicate env "
1827: "name \"%.64s\"", filename, linenum, arg);
1828: continue;
1.344 djm 1829: }
1.368 djm 1830: opt_array_append(filename, linenum,
1831: lookup_opcode_name(opcode),
1832: &options->setenv, &options->num_setenv, arg);
1.290 djm 1833: }
1834: break;
1835:
1.132 djm 1836: case oControlPath:
1837: charptr = &options->control_path;
1838: goto parse_string;
1839:
1840: case oControlMaster:
1841: intptr = &options->control_master;
1.207 djm 1842: multistate_ptr = multistate_controlmaster;
1843: goto parse_multistate;
1.132 djm 1844:
1.187 djm 1845: case oControlPersist:
1846: /* no/false/yes/true, or a time spec */
1847: intptr = &options->control_persist;
1.356 djm 1848: arg = argv_next(&ac, &av);
1.344 djm 1849: if (!arg || *arg == '\0') {
1850: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1851: " argument.", filename, linenum);
1.356 djm 1852: goto out;
1.344 djm 1853: }
1.187 djm 1854: value = 0;
1855: value2 = 0; /* timeout */
1856: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1857: value = 0;
1858: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1859: value = 1;
1860: else if ((value2 = convtime(arg)) >= 0)
1861: value = 1;
1.344 djm 1862: else {
1863: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1864: filename, linenum);
1.356 djm 1865: goto out;
1.344 djm 1866: }
1.187 djm 1867: if (*activep && *intptr == -1) {
1868: *intptr = value;
1869: options->control_persist_timeout = value2;
1870: }
1871: break;
1872:
1.136 djm 1873: case oHashKnownHosts:
1874: intptr = &options->hash_known_hosts;
1875: goto parse_flag;
1876:
1.144 reyk 1877: case oTunnel:
1878: intptr = &options->tun_open;
1.207 djm 1879: multistate_ptr = multistate_tunnel;
1880: goto parse_multistate;
1.144 reyk 1881:
1882: case oTunnelDevice:
1.356 djm 1883: arg = argv_next(&ac, &av);
1.344 djm 1884: if (!arg || *arg == '\0') {
1885: error("%.200s line %d: Missing argument.",
1886: filename, linenum);
1.356 djm 1887: goto out;
1.344 djm 1888: }
1.144 reyk 1889: value = a2tun(arg, &value2);
1.344 djm 1890: if (value == SSH_TUNID_ERR) {
1891: error("%.200s line %d: Bad tun device.",
1892: filename, linenum);
1.356 djm 1893: goto out;
1.344 djm 1894: }
1.355 dtucker 1895: if (*activep && options->tun_local == -1) {
1.144 reyk 1896: options->tun_local = value;
1897: options->tun_remote = value2;
1898: }
1899: break;
1900:
1901: case oLocalCommand:
1902: charptr = &options->local_command;
1903: goto parse_command;
1904:
1905: case oPermitLocalCommand:
1906: intptr = &options->permit_local_command;
1907: goto parse_flag;
1908:
1.277 bluhm 1909: case oRemoteCommand:
1910: charptr = &options->remote_command;
1911: goto parse_command;
1912:
1.167 grunk 1913: case oVisualHostKey:
1914: intptr = &options->visual_host_key;
1915: goto parse_flag;
1916:
1.252 djm 1917: case oInclude:
1.344 djm 1918: if (cmdline) {
1919: error("Include directive not supported as a "
1.252 djm 1920: "command-line option");
1.356 djm 1921: goto out;
1.344 djm 1922: }
1.252 djm 1923: value = 0;
1.356 djm 1924: while ((arg = argv_next(&ac, &av)) != NULL) {
1925: if (*arg == '\0') {
1926: error("%s line %d: keyword %s empty argument",
1927: filename, linenum, keyword);
1928: goto out;
1929: }
1.252 djm 1930: /*
1931: * Ensure all paths are anchored. User configuration
1932: * files may begin with '~/' but system configurations
1933: * must not. If the path is relative, then treat it
1934: * as living in ~/.ssh for user configurations or
1935: * /etc/ssh for system ones.
1936: */
1.344 djm 1937: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1938: error("%.200s line %d: bad include path %s.",
1.252 djm 1939: filename, linenum, arg);
1.356 djm 1940: goto out;
1.344 djm 1941: }
1.301 djm 1942: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1943: xasprintf(&arg2, "%s/%s",
1944: (flags & SSHCONF_USERCONF) ?
1945: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1946: } else
1947: arg2 = xstrdup(arg);
1948: memset(&gl, 0, sizeof(gl));
1949: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1950: if (r == GLOB_NOMATCH) {
1951: debug("%.200s line %d: include %s matched no "
1952: "files",filename, linenum, arg2);
1.269 dtucker 1953: free(arg2);
1.252 djm 1954: continue;
1.344 djm 1955: } else if (r != 0) {
1956: error("%.200s line %d: glob failed for %s.",
1.252 djm 1957: filename, linenum, arg2);
1.356 djm 1958: goto out;
1.344 djm 1959: }
1.252 djm 1960: free(arg2);
1961: oactive = *activep;
1.313 deraadt 1962: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1963: debug3("%.200s line %d: Including file %s "
1964: "depth %d%s", filename, linenum,
1965: gl.gl_pathv[i], depth,
1966: oactive ? "" : " (parse only)");
1967: r = read_config_file_depth(gl.gl_pathv[i],
1968: pw, host, original_host, options,
1969: flags | SSHCONF_CHECKPERM |
1970: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1971: activep, want_final_pass, depth + 1);
1.264 djm 1972: if (r != 1 && errno != ENOENT) {
1.344 djm 1973: error("Can't open user config file "
1.263 djm 1974: "%.100s: %.100s", gl.gl_pathv[i],
1975: strerror(errno));
1.344 djm 1976: globfree(&gl);
1.356 djm 1977: goto out;
1.263 djm 1978: }
1.252 djm 1979: /*
1980: * don't let Match in includes clobber the
1981: * containing file's Match state.
1982: */
1983: *activep = oactive;
1984: if (r != 1)
1985: value = -1;
1986: }
1987: globfree(&gl);
1988: }
1989: if (value != 0)
1.356 djm 1990: ret = value;
1.252 djm 1991: break;
1992:
1.190 djm 1993: case oIPQoS:
1.356 djm 1994: arg = argv_next(&ac, &av);
1.344 djm 1995: if ((value = parse_ipqos(arg)) == -1) {
1996: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1997: filename, linenum, arg);
1.356 djm 1998: goto out;
1.344 djm 1999: }
1.356 djm 2000: arg = argv_next(&ac, &av);
1.190 djm 2001: if (arg == NULL)
2002: value2 = value;
1.344 djm 2003: else if ((value2 = parse_ipqos(arg)) == -1) {
2004: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 2005: filename, linenum, arg);
1.356 djm 2006: goto out;
1.344 djm 2007: }
1.355 dtucker 2008: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 2009: options->ip_qos_interactive = value;
2010: options->ip_qos_bulk = value2;
2011: }
2012: break;
2013:
1.192 djm 2014: case oRequestTTY:
2015: intptr = &options->request_tty;
1.207 djm 2016: multistate_ptr = multistate_requesttty;
2017: goto parse_multistate;
1.192 djm 2018:
1.359 djm 2019: case oSessionType:
2020: intptr = &options->session_type;
2021: multistate_ptr = multistate_sessiontype;
2022: goto parse_multistate;
2023:
1.360 djm 2024: case oStdinNull:
2025: intptr = &options->stdin_null;
2026: goto parse_flag;
2027:
1.361 djm 2028: case oForkAfterAuthentication:
2029: intptr = &options->fork_after_authentication;
2030: goto parse_flag;
2031:
1.199 djm 2032: case oIgnoreUnknown:
2033: charptr = &options->ignored_unknown;
2034: goto parse_string;
2035:
1.205 djm 2036: case oProxyUseFdpass:
2037: intptr = &options->proxy_use_fdpass;
2038: goto parse_flag;
2039:
1.208 djm 2040: case oCanonicalDomains:
2041: value = options->num_canonical_domains != 0;
1.356 djm 2042: i = 0;
2043: while ((arg = argv_next(&ac, &av)) != NULL) {
2044: if (*arg == '\0') {
2045: error("%s line %d: keyword %s empty argument",
2046: filename, linenum, keyword);
2047: goto out;
2048: }
2049: /* Allow "none" only in first position */
2050: if (strcasecmp(arg, "none") == 0) {
2051: if (i > 0 || ac > 0) {
2052: error("%s line %d: keyword %s \"none\" "
2053: "argument must appear alone.",
2054: filename, linenum, keyword);
2055: goto out;
2056: }
2057: }
2058: i++;
1.280 millert 2059: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 2060: error("%s line %d: %s", filename, linenum,
1.280 millert 2061: errstr);
1.356 djm 2062: goto out;
1.280 millert 2063: }
1.208 djm 2064: if (!*activep || value)
2065: continue;
1.344 djm 2066: if (options->num_canonical_domains >=
2067: MAX_CANON_DOMAINS) {
2068: error("%s line %d: too many hostname suffixes.",
1.208 djm 2069: filename, linenum);
1.356 djm 2070: goto out;
1.344 djm 2071: }
1.208 djm 2072: options->canonical_domains[
2073: options->num_canonical_domains++] = xstrdup(arg);
2074: }
2075: break;
2076:
1.209 djm 2077: case oCanonicalizePermittedCNAMEs:
1.208 djm 2078: value = options->num_permitted_cnames != 0;
1.362 djm 2079: i = 0;
1.356 djm 2080: while ((arg = argv_next(&ac, &av)) != NULL) {
1.362 djm 2081: /*
2082: * Either 'none' (only in first position), '*' for
2083: * everything or 'list:list'
2084: */
2085: if (strcasecmp(arg, "none") == 0) {
2086: if (i > 0 || ac > 0) {
2087: error("%s line %d: keyword %s \"none\" "
2088: "argument must appear alone.",
2089: filename, linenum, keyword);
2090: goto out;
2091: }
2092: arg2 = "";
2093: } else if (strcmp(arg, "*") == 0) {
1.208 djm 2094: arg2 = arg;
1.362 djm 2095: } else {
1.208 djm 2096: lowercase(arg);
2097: if ((arg2 = strchr(arg, ':')) == NULL ||
2098: arg2[1] == '\0') {
1.344 djm 2099: error("%s line %d: "
1.208 djm 2100: "Invalid permitted CNAME \"%s\"",
2101: filename, linenum, arg);
1.356 djm 2102: goto out;
1.208 djm 2103: }
2104: *arg2 = '\0';
2105: arg2++;
2106: }
1.362 djm 2107: i++;
1.208 djm 2108: if (!*activep || value)
2109: continue;
1.344 djm 2110: if (options->num_permitted_cnames >=
2111: MAX_CANON_DOMAINS) {
2112: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 2113: filename, linenum);
1.356 djm 2114: goto out;
1.344 djm 2115: }
1.208 djm 2116: cname = options->permitted_cnames +
2117: options->num_permitted_cnames++;
2118: cname->source_list = xstrdup(arg);
2119: cname->target_list = xstrdup(arg2);
2120: }
2121: break;
2122:
1.209 djm 2123: case oCanonicalizeHostname:
2124: intptr = &options->canonicalize_hostname;
2125: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2126: goto parse_multistate;
2127:
1.209 djm 2128: case oCanonicalizeMaxDots:
2129: intptr = &options->canonicalize_max_dots;
1.208 djm 2130: goto parse_int;
2131:
1.209 djm 2132: case oCanonicalizeFallbackLocal:
2133: intptr = &options->canonicalize_fallback_local;
1.208 djm 2134: goto parse_flag;
2135:
1.220 millert 2136: case oStreamLocalBindMask:
1.356 djm 2137: arg = argv_next(&ac, &av);
1.344 djm 2138: if (!arg || *arg == '\0') {
2139: error("%.200s line %d: Missing StreamLocalBindMask "
2140: "argument.", filename, linenum);
1.356 djm 2141: goto out;
1.344 djm 2142: }
1.220 millert 2143: /* Parse mode in octal format */
2144: value = strtol(arg, &endofnumber, 8);
1.344 djm 2145: if (arg == endofnumber || value < 0 || value > 0777) {
2146: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2147: goto out;
1.344 djm 2148: }
1.220 millert 2149: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2150: break;
2151:
2152: case oStreamLocalBindUnlink:
2153: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2154: goto parse_flag;
2155:
1.223 djm 2156: case oRevokedHostKeys:
2157: charptr = &options->revoked_host_keys;
2158: goto parse_string;
2159:
1.224 djm 2160: case oFingerprintHash:
1.225 djm 2161: intptr = &options->fingerprint_hash;
1.356 djm 2162: arg = argv_next(&ac, &av);
1.344 djm 2163: if (!arg || *arg == '\0') {
2164: error("%.200s line %d: Missing argument.",
1.224 djm 2165: filename, linenum);
1.356 djm 2166: goto out;
1.344 djm 2167: }
2168: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2169: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2170: filename, linenum, arg);
1.356 djm 2171: goto out;
1.344 djm 2172: }
1.225 djm 2173: if (*activep && *intptr == -1)
2174: *intptr = value;
1.224 djm 2175: break;
2176:
1.229 djm 2177: case oUpdateHostkeys:
2178: intptr = &options->update_hostkeys;
1.232 djm 2179: multistate_ptr = multistate_yesnoask;
2180: goto parse_multistate;
1.229 djm 2181:
1.350 dtucker 2182: case oHostbasedAcceptedAlgorithms:
2183: charptr = &options->hostbased_accepted_algos;
1.377 djm 2184: ca_only = 0;
1.349 dtucker 2185: goto parse_pubkey_algos;
1.238 markus 2186:
1.349 dtucker 2187: case oPubkeyAcceptedAlgorithms:
2188: charptr = &options->pubkey_accepted_algos;
1.377 djm 2189: ca_only = 0;
1.349 dtucker 2190: goto parse_pubkey_algos;
1.230 djm 2191:
1.246 jcs 2192: case oAddKeysToAgent:
1.356 djm 2193: arg = argv_next(&ac, &av);
2194: arg2 = argv_next(&ac, &av);
1.334 djm 2195: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2196: multistate_yesnoaskconfirm);
1.334 djm 2197: value2 = 0; /* unlimited lifespan by default */
2198: if (value == 3 && arg2 != NULL) {
2199: /* allow "AddKeysToAgent confirm 5m" */
1.375 dtucker 2200: if ((value2 = convtime(arg2)) == -1) {
1.344 djm 2201: error("%s line %d: invalid time value.",
1.334 djm 2202: filename, linenum);
1.356 djm 2203: goto out;
1.344 djm 2204: }
1.334 djm 2205: } else if (value == -1 && arg2 == NULL) {
1.375 dtucker 2206: if ((value2 = convtime(arg)) == -1) {
1.344 djm 2207: error("%s line %d: unsupported option",
1.334 djm 2208: filename, linenum);
1.356 djm 2209: goto out;
1.344 djm 2210: }
1.334 djm 2211: value = 1; /* yes */
2212: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2213: error("%s line %d: unsupported option",
1.334 djm 2214: filename, linenum);
1.356 djm 2215: goto out;
1.334 djm 2216: }
2217: if (*activep && options->add_keys_to_agent == -1) {
2218: options->add_keys_to_agent = value;
2219: options->add_keys_to_agent_lifespan = value2;
2220: }
2221: break;
1.246 jcs 2222:
1.253 markus 2223: case oIdentityAgent:
2224: charptr = &options->identity_agent;
1.356 djm 2225: arg = argv_next(&ac, &av);
1.344 djm 2226: if (!arg || *arg == '\0') {
2227: error("%.200s line %d: Missing argument.",
1.299 djm 2228: filename, linenum);
1.356 djm 2229: goto out;
1.344 djm 2230: }
1.319 djm 2231: parse_agent_path:
1.299 djm 2232: /* Extra validation if the string represents an env var. */
1.344 djm 2233: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2234: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2235: "%s.", filename, linenum, arg);
1.356 djm 2236: goto out;
1.344 djm 2237: }
1.331 dtucker 2238: free(arg2);
2239: /* check for legacy environment format */
1.344 djm 2240: if (arg[0] == '$' && arg[1] != '{' &&
2241: !valid_env_name(arg + 1)) {
2242: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2243: filename, linenum, arg);
1.356 djm 2244: goto out;
1.299 djm 2245: }
2246: if (*activep && *charptr == NULL)
2247: *charptr = xstrdup(arg);
2248: break;
1.253 markus 2249:
1.370 djm 2250: case oEnableEscapeCommandline:
2251: intptr = &options->enable_escape_commandline;
2252: goto parse_flag;
2253:
1.369 djm 2254: case oRequiredRSASize:
2255: intptr = &options->required_rsa_size;
2256: goto parse_int;
2257:
1.96 markus 2258: case oDeprecated:
1.98 markus 2259: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2260: filename, linenum, keyword);
1.356 djm 2261: argv_consume(&ac);
2262: break;
1.96 markus 2263:
1.110 jakob 2264: case oUnsupported:
2265: error("%s line %d: Unsupported option \"%s\"",
2266: filename, linenum, keyword);
1.356 djm 2267: argv_consume(&ac);
2268: break;
1.110 jakob 2269:
1.17 markus 2270: default:
1.344 djm 2271: error("%s line %d: Unimplemented opcode %d",
2272: filename, linenum, opcode);
1.356 djm 2273: goto out;
1.17 markus 2274: }
2275:
2276: /* Check that there is no garbage at end of line. */
1.356 djm 2277: if (ac > 0) {
2278: error("%.200s line %d: keyword %s extra arguments "
2279: "at end of line", filename, linenum, keyword);
2280: goto out;
1.39 ho 2281: }
1.356 djm 2282:
2283: /* success */
2284: ret = 0;
2285: out:
2286: argv_free(oav, oac);
2287: return ret;
1.1 deraadt 2288: }
2289:
1.19 markus 2290: /*
2291: * Reads the config file and modifies the options accordingly. Options
2292: * should already be initialized before this call. This never returns if
1.89 stevesk 2293: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2294: */
1.89 stevesk 2295: int
1.206 djm 2296: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2297: const char *original_host, Options *options, int flags,
2298: int *want_final_pass)
1.1 deraadt 2299: {
1.252 djm 2300: int active = 1;
2301:
2302: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2303: options, flags, &active, want_final_pass, 0);
1.252 djm 2304: }
2305:
2306: #define READCONF_MAX_DEPTH 16
2307: static int
2308: read_config_file_depth(const char *filename, struct passwd *pw,
2309: const char *host, const char *original_host, Options *options,
1.302 djm 2310: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2311: {
1.17 markus 2312: FILE *f;
1.356 djm 2313: char *line = NULL;
1.289 markus 2314: size_t linesize = 0;
1.252 djm 2315: int linenum;
1.17 markus 2316: int bad_options = 0;
2317:
1.252 djm 2318: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2319: fatal("Too many recursive configuration includes");
2320:
1.129 djm 2321: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2322: return 0;
1.129 djm 2323:
1.196 dtucker 2324: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2325: struct stat sb;
1.134 deraadt 2326:
1.131 dtucker 2327: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2328: fatal("fstat %s: %s", filename, strerror(errno));
2329: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2330: (sb.st_mode & 022) != 0))
1.129 djm 2331: fatal("Bad owner or permissions on %s", filename);
2332: }
1.17 markus 2333:
2334: debug("Reading configuration data %.200s", filename);
2335:
1.19 markus 2336: /*
2337: * Mark that we are now processing the options. This flag is turned
2338: * on/off by Host specifications.
2339: */
1.17 markus 2340: linenum = 0;
1.289 markus 2341: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2342: /* Update line number counter. */
2343: linenum++;
1.343 dtucker 2344: /*
2345: * Trim out comments and strip whitespace.
2346: * NB - preserve newlines, they are needed to reproduce
2347: * line numbers later for error messages.
2348: */
1.252 djm 2349: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2350: line, filename, linenum, activep, flags, want_final_pass,
2351: depth) != 0)
1.17 markus 2352: bad_options++;
2353: }
1.289 markus 2354: free(line);
1.17 markus 2355: fclose(f);
2356: if (bad_options > 0)
1.64 millert 2357: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2358: filename, bad_options);
1.89 stevesk 2359: return 1;
1.1 deraadt 2360: }
2361:
1.218 djm 2362: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2363: int
2364: option_clear_or_none(const char *o)
2365: {
2366: return o == NULL || strcasecmp(o, "none") == 0;
2367: }
2368:
1.19 markus 2369: /*
1.362 djm 2370: * Returns 1 if CanonicalizePermittedCNAMEs have been specified, 0 otherwise.
2371: * Allowed to be called on non-final configuration.
2372: */
2373: int
2374: config_has_permitted_cnames(Options *options)
2375: {
2376: if (options->num_permitted_cnames == 1 &&
2377: strcasecmp(options->permitted_cnames[0].source_list, "none") == 0 &&
2378: strcmp(options->permitted_cnames[0].target_list, "") == 0)
2379: return 0;
2380: return options->num_permitted_cnames > 0;
2381: }
2382:
2383: /*
1.19 markus 2384: * Initializes options to special values that indicate that they have not yet
2385: * been set. Read_config_file will only set options with this value. Options
2386: * are processed in the following order: command line, user config file,
2387: * system config file. Last, fill_default_options is called.
2388: */
1.1 deraadt 2389:
1.26 markus 2390: void
1.17 markus 2391: initialize_options(Options * options)
1.1 deraadt 2392: {
1.17 markus 2393: memset(options, 'X', sizeof(*options));
1.372 dtucker 2394: options->host_arg = NULL;
1.17 markus 2395: options->forward_agent = -1;
1.319 djm 2396: options->forward_agent_sock_path = NULL;
1.17 markus 2397: options->forward_x11 = -1;
1.123 markus 2398: options->forward_x11_trusted = -1;
1.186 djm 2399: options->forward_x11_timeout = -1;
1.255 dtucker 2400: options->stdio_forward_host = NULL;
2401: options->stdio_forward_port = 0;
1.256 dtucker 2402: options->clear_forwardings = -1;
1.153 markus 2403: options->exit_on_forward_failure = -1;
1.34 markus 2404: options->xauth_location = NULL;
1.220 millert 2405: options->fwd_opts.gateway_ports = -1;
2406: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2407: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2408: options->pubkey_authentication = -1;
1.118 markus 2409: options->gss_authentication = -1;
2410: options->gss_deleg_creds = -1;
1.17 markus 2411: options->password_authentication = -1;
1.48 markus 2412: options->kbd_interactive_authentication = -1;
2413: options->kbd_interactive_devices = NULL;
1.72 markus 2414: options->hostbased_authentication = -1;
1.17 markus 2415: options->batch_mode = -1;
2416: options->check_host_ip = -1;
2417: options->strict_host_key_checking = -1;
2418: options->compression = -1;
1.126 markus 2419: options->tcp_keep_alive = -1;
1.17 markus 2420: options->port = -1;
1.114 djm 2421: options->address_family = -1;
1.17 markus 2422: options->connection_attempts = -1;
1.111 djm 2423: options->connection_timeout = -1;
1.17 markus 2424: options->number_of_password_prompts = -1;
1.25 markus 2425: options->ciphers = NULL;
1.62 markus 2426: options->macs = NULL;
1.189 djm 2427: options->kex_algorithms = NULL;
1.76 markus 2428: options->hostkeyalgorithms = NULL;
1.298 djm 2429: options->ca_sign_algorithms = NULL;
1.17 markus 2430: options->num_identity_files = 0;
1.344 djm 2431: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2432: options->num_certificate_files = 0;
1.344 djm 2433: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2434: options->hostname = NULL;
1.52 markus 2435: options->host_key_alias = NULL;
1.17 markus 2436: options->proxy_command = NULL;
1.257 djm 2437: options->jump_user = NULL;
2438: options->jump_host = NULL;
2439: options->jump_port = -1;
2440: options->jump_extra = NULL;
1.17 markus 2441: options->user = NULL;
2442: options->escape_char = -1;
1.193 djm 2443: options->num_system_hostfiles = 0;
2444: options->num_user_hostfiles = 0;
1.185 djm 2445: options->local_forwards = NULL;
1.17 markus 2446: options->num_local_forwards = 0;
1.185 djm 2447: options->remote_forwards = NULL;
1.17 markus 2448: options->num_remote_forwards = 0;
1.351 markus 2449: options->permitted_remote_opens = NULL;
2450: options->num_permitted_remote_opens = 0;
1.271 dtucker 2451: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2452: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2453: options->num_log_verbose = 0;
2454: options->log_verbose = NULL;
1.67 markus 2455: options->preferred_authentications = NULL;
1.77 markus 2456: options->bind_address = NULL;
1.282 djm 2457: options->bind_interface = NULL;
1.183 markus 2458: options->pkcs11_provider = NULL;
1.310 djm 2459: options->sk_provider = NULL;
1.101 markus 2460: options->enable_ssh_keysign = - 1;
1.91 markus 2461: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2462: options->identities_only = - 1;
1.105 markus 2463: options->rekey_limit = - 1;
1.198 dtucker 2464: options->rekey_interval = -1;
1.107 jakob 2465: options->verify_host_key_dns = -1;
1.127 markus 2466: options->server_alive_interval = -1;
2467: options->server_alive_count_max = -1;
1.290 djm 2468: options->send_env = NULL;
1.130 djm 2469: options->num_send_env = 0;
1.290 djm 2470: options->setenv = NULL;
2471: options->num_setenv = 0;
1.132 djm 2472: options->control_path = NULL;
2473: options->control_master = -1;
1.187 djm 2474: options->control_persist = -1;
2475: options->control_persist_timeout = 0;
1.136 djm 2476: options->hash_known_hosts = -1;
1.144 reyk 2477: options->tun_open = -1;
2478: options->tun_local = -1;
2479: options->tun_remote = -1;
2480: options->local_command = NULL;
2481: options->permit_local_command = -1;
1.277 bluhm 2482: options->remote_command = NULL;
1.246 jcs 2483: options->add_keys_to_agent = -1;
1.334 djm 2484: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2485: options->identity_agent = NULL;
1.167 grunk 2486: options->visual_host_key = -1;
1.190 djm 2487: options->ip_qos_interactive = -1;
2488: options->ip_qos_bulk = -1;
1.192 djm 2489: options->request_tty = -1;
1.359 djm 2490: options->session_type = -1;
1.360 djm 2491: options->stdin_null = -1;
1.361 djm 2492: options->fork_after_authentication = -1;
1.205 djm 2493: options->proxy_use_fdpass = -1;
1.199 djm 2494: options->ignored_unknown = NULL;
1.208 djm 2495: options->num_canonical_domains = 0;
2496: options->num_permitted_cnames = 0;
1.209 djm 2497: options->canonicalize_max_dots = -1;
2498: options->canonicalize_fallback_local = -1;
2499: options->canonicalize_hostname = -1;
1.223 djm 2500: options->revoked_host_keys = NULL;
1.224 djm 2501: options->fingerprint_hash = -1;
1.229 djm 2502: options->update_hostkeys = -1;
1.350 dtucker 2503: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2504: options->pubkey_accepted_algos = NULL;
1.346 djm 2505: options->known_hosts_command = NULL;
1.369 djm 2506: options->required_rsa_size = -1;
1.370 djm 2507: options->enable_escape_commandline = -1;
1.379 ! djm 2508: options->tag = NULL;
1.1 deraadt 2509: }
2510:
1.19 markus 2511: /*
1.218 djm 2512: * A petite version of fill_default_options() that just fills the options
2513: * needed for hostname canonicalization to proceed.
2514: */
2515: void
2516: fill_default_options_for_canonicalization(Options *options)
2517: {
2518: if (options->canonicalize_max_dots == -1)
2519: options->canonicalize_max_dots = 1;
2520: if (options->canonicalize_fallback_local == -1)
2521: options->canonicalize_fallback_local = 1;
2522: if (options->canonicalize_hostname == -1)
2523: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2524: }
2525:
2526: /*
1.19 markus 2527: * Called after processing other sources of option data, this fills those
2528: * options for which no value has been specified with their default values.
2529: */
1.344 djm 2530: int
1.17 markus 2531: fill_default_options(Options * options)
1.1 deraadt 2532: {
1.298 djm 2533: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2534: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2535: int ret = 0, r;
1.292 djm 2536:
1.17 markus 2537: if (options->forward_agent == -1)
1.33 markus 2538: options->forward_agent = 0;
1.17 markus 2539: if (options->forward_x11 == -1)
1.23 markus 2540: options->forward_x11 = 0;
1.123 markus 2541: if (options->forward_x11_trusted == -1)
2542: options->forward_x11_trusted = 0;
1.186 djm 2543: if (options->forward_x11_timeout == -1)
2544: options->forward_x11_timeout = 1200;
1.256 dtucker 2545: /*
2546: * stdio forwarding (-W) changes the default for these but we defer
2547: * setting the values so they can be overridden.
2548: */
1.153 markus 2549: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2550: options->exit_on_forward_failure =
2551: options->stdio_forward_host != NULL ? 1 : 0;
2552: if (options->clear_forwardings == -1)
2553: options->clear_forwardings =
2554: options->stdio_forward_host != NULL ? 1 : 0;
2555: if (options->clear_forwardings == 1)
2556: clear_forwardings(options);
2557:
1.34 markus 2558: if (options->xauth_location == NULL)
1.344 djm 2559: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2560: if (options->fwd_opts.gateway_ports == -1)
2561: options->fwd_opts.gateway_ports = 0;
2562: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2563: options->fwd_opts.streamlocal_bind_mask = 0177;
2564: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2565: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2566: if (options->pubkey_authentication == -1)
1.364 djm 2567: options->pubkey_authentication = SSH_PUBKEY_AUTH_ALL;
1.118 markus 2568: if (options->gss_authentication == -1)
1.122 markus 2569: options->gss_authentication = 0;
1.118 markus 2570: if (options->gss_deleg_creds == -1)
2571: options->gss_deleg_creds = 0;
1.17 markus 2572: if (options->password_authentication == -1)
2573: options->password_authentication = 1;
1.48 markus 2574: if (options->kbd_interactive_authentication == -1)
1.59 markus 2575: options->kbd_interactive_authentication = 1;
1.72 markus 2576: if (options->hostbased_authentication == -1)
2577: options->hostbased_authentication = 0;
1.17 markus 2578: if (options->batch_mode == -1)
2579: options->batch_mode = 0;
2580: if (options->check_host_ip == -1)
1.348 djm 2581: options->check_host_ip = 0;
1.17 markus 2582: if (options->strict_host_key_checking == -1)
1.278 djm 2583: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2584: if (options->compression == -1)
2585: options->compression = 0;
1.126 markus 2586: if (options->tcp_keep_alive == -1)
2587: options->tcp_keep_alive = 1;
1.17 markus 2588: if (options->port == -1)
2589: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2590: if (options->address_family == -1)
2591: options->address_family = AF_UNSPEC;
1.17 markus 2592: if (options->connection_attempts == -1)
1.84 markus 2593: options->connection_attempts = 1;
1.17 markus 2594: if (options->number_of_password_prompts == -1)
2595: options->number_of_password_prompts = 3;
1.76 markus 2596: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2597: if (options->add_keys_to_agent == -1) {
1.246 jcs 2598: options->add_keys_to_agent = 0;
1.334 djm 2599: options->add_keys_to_agent_lifespan = 0;
2600: }
1.17 markus 2601: if (options->num_identity_files == 0) {
1.273 djm 2602: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2603: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2604: add_identity_file(options, "~/",
1.310 djm 2605: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2606: add_identity_file(options, "~/",
1.273 djm 2607: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2608: add_identity_file(options, "~/",
2609: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2610: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.365 dtucker 2611: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
1.27 markus 2612: }
1.17 markus 2613: if (options->escape_char == -1)
2614: options->escape_char = '~';
1.193 djm 2615: if (options->num_system_hostfiles == 0) {
2616: options->system_hostfiles[options->num_system_hostfiles++] =
2617: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2618: options->system_hostfiles[options->num_system_hostfiles++] =
2619: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2620: }
1.336 djm 2621: if (options->update_hostkeys == -1) {
1.338 djm 2622: if (options->verify_host_key_dns <= 0 &&
2623: (options->num_user_hostfiles == 0 ||
1.336 djm 2624: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2625: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2626: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2627: else
1.325 djm 2628: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2629: }
1.193 djm 2630: if (options->num_user_hostfiles == 0) {
2631: options->user_hostfiles[options->num_user_hostfiles++] =
2632: xstrdup(_PATH_SSH_USER_HOSTFILE);
2633: options->user_hostfiles[options->num_user_hostfiles++] =
2634: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2635: }
1.95 markus 2636: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2637: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2638: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2639: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2640: if (options->no_host_authentication_for_localhost == - 1)
2641: options->no_host_authentication_for_localhost = 0;
1.128 markus 2642: if (options->identities_only == -1)
2643: options->identities_only = 0;
1.101 markus 2644: if (options->enable_ssh_keysign == -1)
2645: options->enable_ssh_keysign = 0;
1.105 markus 2646: if (options->rekey_limit == -1)
2647: options->rekey_limit = 0;
1.198 dtucker 2648: if (options->rekey_interval == -1)
2649: options->rekey_interval = 0;
1.107 jakob 2650: if (options->verify_host_key_dns == -1)
2651: options->verify_host_key_dns = 0;
1.127 markus 2652: if (options->server_alive_interval == -1)
2653: options->server_alive_interval = 0;
2654: if (options->server_alive_count_max == -1)
2655: options->server_alive_count_max = 3;
1.132 djm 2656: if (options->control_master == -1)
2657: options->control_master = 0;
1.187 djm 2658: if (options->control_persist == -1) {
2659: options->control_persist = 0;
2660: options->control_persist_timeout = 0;
2661: }
1.136 djm 2662: if (options->hash_known_hosts == -1)
2663: options->hash_known_hosts = 0;
1.144 reyk 2664: if (options->tun_open == -1)
1.145 reyk 2665: options->tun_open = SSH_TUNMODE_NO;
2666: if (options->tun_local == -1)
2667: options->tun_local = SSH_TUNID_ANY;
2668: if (options->tun_remote == -1)
2669: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2670: if (options->permit_local_command == -1)
2671: options->permit_local_command = 0;
1.167 grunk 2672: if (options->visual_host_key == -1)
2673: options->visual_host_key = 0;
1.190 djm 2674: if (options->ip_qos_interactive == -1)
1.284 job 2675: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2676: if (options->ip_qos_bulk == -1)
1.284 job 2677: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2678: if (options->request_tty == -1)
2679: options->request_tty = REQUEST_TTY_AUTO;
1.359 djm 2680: if (options->session_type == -1)
2681: options->session_type = SESSION_TYPE_DEFAULT;
1.360 djm 2682: if (options->stdin_null == -1)
2683: options->stdin_null = 0;
1.361 djm 2684: if (options->fork_after_authentication == -1)
2685: options->fork_after_authentication = 0;
1.205 djm 2686: if (options->proxy_use_fdpass == -1)
2687: options->proxy_use_fdpass = 0;
1.209 djm 2688: if (options->canonicalize_max_dots == -1)
2689: options->canonicalize_max_dots = 1;
2690: if (options->canonicalize_fallback_local == -1)
2691: options->canonicalize_fallback_local = 1;
2692: if (options->canonicalize_hostname == -1)
2693: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2694: if (options->fingerprint_hash == -1)
2695: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2696: if (options->sk_provider == NULL)
1.314 djm 2697: options->sk_provider = xstrdup("internal");
1.369 djm 2698: if (options->required_rsa_size == -1)
2699: options->required_rsa_size = SSH_RSA_MINIMUM_MODULUS_SIZE;
1.370 djm 2700: if (options->enable_escape_commandline == -1)
2701: options->enable_escape_commandline = 0;
1.292 djm 2702:
2703: /* Expand KEX name lists */
2704: all_cipher = cipher_alg_list(',', 0);
2705: all_mac = mac_alg_list(',');
2706: all_kex = kex_alg_list(',');
2707: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2708: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2709: /* remove unsupported algos from default lists */
1.332 djm 2710: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2711: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2712: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2713: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2714: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2715: #define ASSEMBLE(what, defaults, all) \
2716: do { \
2717: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2718: defaults, all)) != 0) { \
2719: error_fr(r, "%s", #what); \
2720: goto fail; \
2721: } \
1.297 djm 2722: } while (0)
1.320 dtucker 2723: ASSEMBLE(ciphers, def_cipher, all_cipher);
2724: ASSEMBLE(macs, def_mac, all_mac);
2725: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2726: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2727: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2728: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2729: #undef ASSEMBLE
1.224 djm 2730:
1.207 djm 2731: #define CLEAR_ON_NONE(v) \
2732: do { \
1.218 djm 2733: if (option_clear_or_none(v)) { \
1.207 djm 2734: free(v); \
2735: v = NULL; \
2736: } \
2737: } while(0)
2738: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2739: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2740: CLEAR_ON_NONE(options->proxy_command);
2741: CLEAR_ON_NONE(options->control_path);
1.223 djm 2742: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2743: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2744: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2745: CLEAR_ON_NONE(options->known_hosts_command);
1.287 djm 2746: if (options->jump_host != NULL &&
2747: strcmp(options->jump_host, "none") == 0 &&
2748: options->jump_port == 0 && options->jump_user == NULL) {
2749: free(options->jump_host);
2750: options->jump_host = NULL;
2751: }
1.362 djm 2752: if (options->num_permitted_cnames == 1 &&
2753: !config_has_permitted_cnames(options)) {
2754: /* clean up CanonicalizePermittedCNAMEs=none */
2755: free(options->permitted_cnames[0].source_list);
2756: free(options->permitted_cnames[0].target_list);
2757: memset(options->permitted_cnames, '\0',
2758: sizeof(*options->permitted_cnames));
2759: options->num_permitted_cnames = 0;
2760: }
1.254 markus 2761: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2762: /* options->user will be set in the main program if appropriate */
2763: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2764: /* options->host_key_alias should not be set by default */
1.67 markus 2765: /* options->preferred_authentications will be set in ssh */
1.344 djm 2766:
2767: /* success */
2768: ret = 0;
2769: fail:
2770: free(all_cipher);
2771: free(all_mac);
2772: free(all_kex);
2773: free(all_key);
2774: free(all_sig);
2775: free(def_cipher);
2776: free(def_mac);
2777: free(def_kex);
2778: free(def_key);
2779: free(def_sig);
2780: return ret;
2781: }
2782:
2783: void
2784: free_options(Options *o)
2785: {
2786: int i;
2787:
2788: if (o == NULL)
2789: return;
2790:
2791: #define FREE_ARRAY(type, n, a) \
2792: do { \
2793: type _i; \
2794: for (_i = 0; _i < (n); _i++) \
2795: free((a)[_i]); \
2796: } while (0)
2797:
2798: free(o->forward_agent_sock_path);
2799: free(o->xauth_location);
2800: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2801: free(o->log_verbose);
2802: free(o->ciphers);
2803: free(o->macs);
2804: free(o->hostkeyalgorithms);
2805: free(o->kex_algorithms);
2806: free(o->ca_sign_algorithms);
2807: free(o->hostname);
2808: free(o->host_key_alias);
2809: free(o->proxy_command);
2810: free(o->user);
2811: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2812: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2813: free(o->preferred_authentications);
2814: free(o->bind_address);
2815: free(o->bind_interface);
2816: free(o->pkcs11_provider);
2817: free(o->sk_provider);
2818: for (i = 0; i < o->num_identity_files; i++) {
2819: free(o->identity_files[i]);
2820: sshkey_free(o->identity_keys[i]);
2821: }
2822: for (i = 0; i < o->num_certificate_files; i++) {
2823: free(o->certificate_files[i]);
2824: sshkey_free(o->certificates[i]);
2825: }
2826: free(o->identity_agent);
2827: for (i = 0; i < o->num_local_forwards; i++) {
2828: free(o->local_forwards[i].listen_host);
2829: free(o->local_forwards[i].listen_path);
2830: free(o->local_forwards[i].connect_host);
2831: free(o->local_forwards[i].connect_path);
2832: }
2833: free(o->local_forwards);
2834: for (i = 0; i < o->num_remote_forwards; i++) {
2835: free(o->remote_forwards[i].listen_host);
2836: free(o->remote_forwards[i].listen_path);
2837: free(o->remote_forwards[i].connect_host);
2838: free(o->remote_forwards[i].connect_path);
2839: }
2840: free(o->remote_forwards);
2841: free(o->stdio_forward_host);
1.368 djm 2842: FREE_ARRAY(u_int, o->num_send_env, o->send_env);
1.344 djm 2843: free(o->send_env);
1.368 djm 2844: FREE_ARRAY(u_int, o->num_setenv, o->setenv);
1.344 djm 2845: free(o->setenv);
2846: free(o->control_path);
2847: free(o->local_command);
2848: free(o->remote_command);
2849: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2850: for (i = 0; i < o->num_permitted_cnames; i++) {
2851: free(o->permitted_cnames[i].source_list);
2852: free(o->permitted_cnames[i].target_list);
2853: }
2854: free(o->revoked_host_keys);
1.350 dtucker 2855: free(o->hostbased_accepted_algos);
1.349 dtucker 2856: free(o->pubkey_accepted_algos);
1.344 djm 2857: free(o->jump_user);
2858: free(o->jump_host);
2859: free(o->jump_extra);
2860: free(o->ignored_unknown);
2861: explicit_bzero(o, sizeof(*o));
2862: #undef FREE_ARRAY
1.135 djm 2863: }
2864:
1.220 millert 2865: struct fwdarg {
2866: char *arg;
2867: int ispath;
2868: };
2869:
2870: /*
2871: * parse_fwd_field
2872: * parses the next field in a port forwarding specification.
2873: * sets fwd to the parsed field and advances p past the colon
2874: * or sets it to NULL at end of string.
2875: * returns 0 on success, else non-zero.
2876: */
2877: static int
2878: parse_fwd_field(char **p, struct fwdarg *fwd)
2879: {
2880: char *ep, *cp = *p;
2881: int ispath = 0;
2882:
2883: if (*cp == '\0') {
2884: *p = NULL;
2885: return -1; /* end of string */
2886: }
2887:
2888: /*
2889: * A field escaped with square brackets is used literally.
2890: * XXX - allow ']' to be escaped via backslash?
2891: */
2892: if (*cp == '[') {
2893: /* find matching ']' */
2894: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2895: if (*ep == '/')
2896: ispath = 1;
2897: }
2898: /* no matching ']' or not at end of field. */
2899: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2900: return -1;
2901: /* NUL terminate the field and advance p past the colon */
2902: *ep++ = '\0';
2903: if (*ep != '\0')
2904: *ep++ = '\0';
2905: fwd->arg = cp + 1;
2906: fwd->ispath = ispath;
2907: *p = ep;
2908: return 0;
2909: }
2910:
2911: for (cp = *p; *cp != '\0'; cp++) {
2912: switch (*cp) {
2913: case '\\':
2914: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2915: if (*cp == '\0')
2916: return -1;
1.220 millert 2917: break;
2918: case '/':
2919: ispath = 1;
2920: break;
2921: case ':':
2922: *cp++ = '\0';
2923: goto done;
2924: }
2925: }
2926: done:
2927: fwd->arg = *p;
2928: fwd->ispath = ispath;
2929: *p = cp;
2930: return 0;
2931: }
2932:
1.135 djm 2933: /*
2934: * parse_forward
2935: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2936: * dynamicfwd == 0
1.220 millert 2937: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2938: * listenpath:connectpath
1.168 stevesk 2939: * dynamicfwd == 1
2940: * [listenhost:]listenport
1.135 djm 2941: * returns number of arguments parsed or zero on error
2942: */
2943: int
1.220 millert 2944: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2945: {
1.220 millert 2946: struct fwdarg fwdargs[4];
2947: char *p, *cp;
1.331 dtucker 2948: int i, err;
1.135 djm 2949:
1.220 millert 2950: memset(fwd, 0, sizeof(*fwd));
2951: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2952:
1.331 dtucker 2953: /*
2954: * We expand environment variables before checking if we think they're
2955: * paths so that if ${VAR} expands to a fully qualified path it is
2956: * treated as a path.
2957: */
2958: cp = p = dollar_expand(&err, fwdspec);
2959: if (p == NULL || err)
2960: return 0;
1.135 djm 2961:
2962: /* skip leading spaces */
1.214 deraadt 2963: while (isspace((u_char)*cp))
1.135 djm 2964: cp++;
2965:
1.220 millert 2966: for (i = 0; i < 4; ++i) {
2967: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2968: break;
1.220 millert 2969: }
1.135 djm 2970:
1.170 stevesk 2971: /* Check for trailing garbage */
1.220 millert 2972: if (cp != NULL && *cp != '\0') {
1.135 djm 2973: i = 0; /* failure */
1.220 millert 2974: }
1.135 djm 2975:
2976: switch (i) {
1.168 stevesk 2977: case 1:
1.220 millert 2978: if (fwdargs[0].ispath) {
2979: fwd->listen_path = xstrdup(fwdargs[0].arg);
2980: fwd->listen_port = PORT_STREAMLOCAL;
2981: } else {
2982: fwd->listen_host = NULL;
2983: fwd->listen_port = a2port(fwdargs[0].arg);
2984: }
1.168 stevesk 2985: fwd->connect_host = xstrdup("socks");
2986: break;
2987:
2988: case 2:
1.220 millert 2989: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2990: fwd->listen_path = xstrdup(fwdargs[0].arg);
2991: fwd->listen_port = PORT_STREAMLOCAL;
2992: fwd->connect_path = xstrdup(fwdargs[1].arg);
2993: fwd->connect_port = PORT_STREAMLOCAL;
2994: } else if (fwdargs[1].ispath) {
2995: fwd->listen_host = NULL;
2996: fwd->listen_port = a2port(fwdargs[0].arg);
2997: fwd->connect_path = xstrdup(fwdargs[1].arg);
2998: fwd->connect_port = PORT_STREAMLOCAL;
2999: } else {
3000: fwd->listen_host = xstrdup(fwdargs[0].arg);
3001: fwd->listen_port = a2port(fwdargs[1].arg);
3002: fwd->connect_host = xstrdup("socks");
3003: }
1.168 stevesk 3004: break;
3005:
1.135 djm 3006: case 3:
1.220 millert 3007: if (fwdargs[0].ispath) {
3008: fwd->listen_path = xstrdup(fwdargs[0].arg);
3009: fwd->listen_port = PORT_STREAMLOCAL;
3010: fwd->connect_host = xstrdup(fwdargs[1].arg);
3011: fwd->connect_port = a2port(fwdargs[2].arg);
3012: } else if (fwdargs[2].ispath) {
3013: fwd->listen_host = xstrdup(fwdargs[0].arg);
3014: fwd->listen_port = a2port(fwdargs[1].arg);
3015: fwd->connect_path = xstrdup(fwdargs[2].arg);
3016: fwd->connect_port = PORT_STREAMLOCAL;
3017: } else {
3018: fwd->listen_host = NULL;
3019: fwd->listen_port = a2port(fwdargs[0].arg);
3020: fwd->connect_host = xstrdup(fwdargs[1].arg);
3021: fwd->connect_port = a2port(fwdargs[2].arg);
3022: }
1.135 djm 3023: break;
3024:
3025: case 4:
1.220 millert 3026: fwd->listen_host = xstrdup(fwdargs[0].arg);
3027: fwd->listen_port = a2port(fwdargs[1].arg);
3028: fwd->connect_host = xstrdup(fwdargs[2].arg);
3029: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 3030: break;
3031: default:
3032: i = 0; /* failure */
3033: }
3034:
1.202 djm 3035: free(p);
1.135 djm 3036:
1.168 stevesk 3037: if (dynamicfwd) {
3038: if (!(i == 1 || i == 2))
3039: goto fail_free;
3040: } else {
1.220 millert 3041: if (!(i == 3 || i == 4)) {
3042: if (fwd->connect_path == NULL &&
3043: fwd->listen_path == NULL)
3044: goto fail_free;
3045: }
3046: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 3047: goto fail_free;
3048: }
3049:
1.220 millert 3050: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
3051: (!remotefwd && fwd->listen_port == 0))
1.135 djm 3052: goto fail_free;
3053: if (fwd->connect_host != NULL &&
3054: strlen(fwd->connect_host) >= NI_MAXHOST)
3055: goto fail_free;
1.356 djm 3056: /*
3057: * XXX - if connecting to a remote socket, max sun len may not
3058: * match this host
3059: */
1.220 millert 3060: if (fwd->connect_path != NULL &&
3061: strlen(fwd->connect_path) >= PATH_MAX_SUN)
3062: goto fail_free;
1.176 djm 3063: if (fwd->listen_host != NULL &&
3064: strlen(fwd->listen_host) >= NI_MAXHOST)
3065: goto fail_free;
1.220 millert 3066: if (fwd->listen_path != NULL &&
3067: strlen(fwd->listen_path) >= PATH_MAX_SUN)
3068: goto fail_free;
1.135 djm 3069:
3070: return (i);
3071:
3072: fail_free:
1.202 djm 3073: free(fwd->connect_host);
3074: fwd->connect_host = NULL;
1.220 millert 3075: free(fwd->connect_path);
3076: fwd->connect_path = NULL;
1.202 djm 3077: free(fwd->listen_host);
3078: fwd->listen_host = NULL;
1.220 millert 3079: free(fwd->listen_path);
3080: fwd->listen_path = NULL;
1.135 djm 3081: return (0);
1.221 djm 3082: }
3083:
1.257 djm 3084: int
3085: parse_jump(const char *s, Options *o, int active)
3086: {
3087: char *orig, *sdup, *cp;
3088: char *host = NULL, *user = NULL;
1.345 djm 3089: int r, ret = -1, port = -1, first;
1.257 djm 3090:
3091: active &= o->proxy_command == NULL && o->jump_host == NULL;
3092:
3093: orig = sdup = xstrdup(s);
1.356 djm 3094:
3095: /* Remove comment and trailing whitespace */
3096: if ((cp = strchr(orig, '#')) != NULL)
3097: *cp = '\0';
3098: rtrim(orig);
3099:
1.258 naddy 3100: first = active;
1.259 djm 3101: do {
1.287 djm 3102: if (strcasecmp(s, "none") == 0)
3103: break;
1.259 djm 3104: if ((cp = strrchr(sdup, ',')) == NULL)
3105: cp = sdup; /* last */
3106: else
3107: *cp++ = '\0';
3108:
1.258 naddy 3109: if (first) {
1.257 djm 3110: /* First argument and configuration is active */
1.345 djm 3111: r = parse_ssh_uri(cp, &user, &host, &port);
3112: if (r == -1 || (r == 1 &&
3113: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 3114: goto out;
3115: } else {
3116: /* Subsequent argument or inactive configuration */
1.345 djm 3117: r = parse_ssh_uri(cp, NULL, NULL, NULL);
3118: if (r == -1 || (r == 1 &&
3119: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 3120: goto out;
3121: }
1.258 naddy 3122: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 3123: } while (cp != sdup);
1.257 djm 3124: /* success */
1.258 naddy 3125: if (active) {
1.287 djm 3126: if (strcasecmp(s, "none") == 0) {
3127: o->jump_host = xstrdup("none");
3128: o->jump_port = 0;
3129: } else {
3130: o->jump_user = user;
3131: o->jump_host = host;
3132: o->jump_port = port;
3133: o->proxy_command = xstrdup("none");
3134: user = host = NULL;
3135: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
3136: o->jump_extra = xstrdup(s);
3137: o->jump_extra[cp - s] = '\0';
3138: }
1.259 djm 3139: }
1.258 naddy 3140: }
1.257 djm 3141: ret = 0;
3142: out:
1.258 naddy 3143: free(orig);
1.257 djm 3144: free(user);
3145: free(host);
3146: return ret;
1.280 millert 3147: }
3148:
3149: int
3150: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
3151: {
1.344 djm 3152: char *user = NULL, *host = NULL, *path = NULL;
3153: int r, port;
1.280 millert 3154:
1.344 djm 3155: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 3156: if (r == 0 && path != NULL)
3157: r = -1; /* path not allowed */
1.344 djm 3158: if (r == 0) {
3159: if (userp != NULL) {
3160: *userp = user;
3161: user = NULL;
3162: }
3163: if (hostp != NULL) {
3164: *hostp = host;
3165: host = NULL;
3166: }
3167: if (portp != NULL)
3168: *portp = port;
3169: }
3170: free(user);
3171: free(host);
3172: free(path);
1.280 millert 3173: return r;
1.257 djm 3174: }
3175:
1.221 djm 3176: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3177: static const char *
3178: fmt_multistate_int(int val, const struct multistate *m)
3179: {
3180: u_int i;
3181:
3182: for (i = 0; m[i].key != NULL; i++) {
3183: if (m[i].value == val)
3184: return m[i].key;
3185: }
3186: return "UNKNOWN";
3187: }
3188:
3189: static const char *
3190: fmt_intarg(OpCodes code, int val)
3191: {
3192: if (val == -1)
3193: return "unset";
3194: switch (code) {
3195: case oAddressFamily:
3196: return fmt_multistate_int(val, multistate_addressfamily);
3197: case oVerifyHostKeyDNS:
1.232 djm 3198: case oUpdateHostkeys:
1.221 djm 3199: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3200: case oStrictHostKeyChecking:
3201: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3202: case oControlMaster:
3203: return fmt_multistate_int(val, multistate_controlmaster);
3204: case oTunnel:
3205: return fmt_multistate_int(val, multistate_tunnel);
3206: case oRequestTTY:
3207: return fmt_multistate_int(val, multistate_requesttty);
1.359 djm 3208: case oSessionType:
3209: return fmt_multistate_int(val, multistate_sessiontype);
1.221 djm 3210: case oCanonicalizeHostname:
3211: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3212: case oAddKeysToAgent:
3213: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.364 djm 3214: case oPubkeyAuthentication:
3215: return fmt_multistate_int(val, multistate_pubkey_auth);
1.224 djm 3216: case oFingerprintHash:
3217: return ssh_digest_alg_name(val);
1.221 djm 3218: default:
3219: switch (val) {
3220: case 0:
3221: return "no";
3222: case 1:
3223: return "yes";
3224: default:
3225: return "UNKNOWN";
3226: }
3227: }
3228: }
3229:
3230: static const char *
3231: lookup_opcode_name(OpCodes code)
3232: {
3233: u_int i;
3234:
3235: for (i = 0; keywords[i].name != NULL; i++)
3236: if (keywords[i].opcode == code)
3237: return(keywords[i].name);
3238: return "UNKNOWN";
3239: }
3240:
3241: static void
3242: dump_cfg_int(OpCodes code, int val)
3243: {
3244: printf("%s %d\n", lookup_opcode_name(code), val);
3245: }
3246:
3247: static void
3248: dump_cfg_fmtint(OpCodes code, int val)
3249: {
3250: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3251: }
3252:
3253: static void
3254: dump_cfg_string(OpCodes code, const char *val)
3255: {
3256: if (val == NULL)
3257: return;
3258: printf("%s %s\n", lookup_opcode_name(code), val);
3259: }
3260:
3261: static void
3262: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3263: {
3264: u_int i;
3265:
3266: for (i = 0; i < count; i++)
3267: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3268: }
3269:
3270: static void
3271: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3272: {
3273: u_int i;
3274:
3275: printf("%s", lookup_opcode_name(code));
1.356 djm 3276: if (count == 0)
3277: printf(" none");
1.221 djm 3278: for (i = 0; i < count; i++)
3279: printf(" %s", vals[i]);
3280: printf("\n");
3281: }
3282:
3283: static void
3284: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3285: {
3286: const struct Forward *fwd;
3287: u_int i;
3288:
3289: /* oDynamicForward */
3290: for (i = 0; i < count; i++) {
3291: fwd = &fwds[i];
1.265 djm 3292: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3293: strcmp(fwd->connect_host, "socks") != 0)
3294: continue;
1.265 djm 3295: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3296: strcmp(fwd->connect_host, "socks") == 0)
3297: continue;
3298: printf("%s", lookup_opcode_name(code));
3299: if (fwd->listen_port == PORT_STREAMLOCAL)
3300: printf(" %s", fwd->listen_path);
3301: else if (fwd->listen_host == NULL)
3302: printf(" %d", fwd->listen_port);
3303: else {
3304: printf(" [%s]:%d",
3305: fwd->listen_host, fwd->listen_port);
3306: }
3307: if (code != oDynamicForward) {
3308: if (fwd->connect_port == PORT_STREAMLOCAL)
3309: printf(" %s", fwd->connect_path);
3310: else if (fwd->connect_host == NULL)
3311: printf(" %d", fwd->connect_port);
3312: else {
3313: printf(" [%s]:%d",
3314: fwd->connect_host, fwd->connect_port);
3315: }
3316: }
3317: printf("\n");
3318: }
3319: }
3320:
3321: void
3322: dump_client_config(Options *o, const char *host)
3323: {
1.326 djm 3324: int i, r;
3325: char buf[8], *all_key;
3326:
3327: /*
3328: * Expand HostKeyAlgorithms name lists. This isn't handled in
3329: * fill_default_options() like the other algorithm lists because
3330: * the host key algorithms are by default dynamically chosen based
3331: * on the host's keys found in known_hosts.
3332: */
3333: all_key = sshkey_alg_list(0, 0, 1, ',');
3334: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3335: all_key)) != 0)
1.340 djm 3336: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3337: free(all_key);
1.240 djm 3338:
1.221 djm 3339: /* Most interesting options first: user, host, port */
1.372 dtucker 3340: dump_cfg_string(oHost, o->host_arg);
1.221 djm 3341: dump_cfg_string(oUser, o->user);
1.306 jmc 3342: dump_cfg_string(oHostname, host);
1.221 djm 3343: dump_cfg_int(oPort, o->port);
3344:
3345: /* Flag options */
3346: dump_cfg_fmtint(oAddressFamily, o->address_family);
3347: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3348: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3349: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3350: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3351: dump_cfg_fmtint(oCompression, o->compression);
3352: dump_cfg_fmtint(oControlMaster, o->control_master);
3353: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3354: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3355: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3356: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3357: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3358: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3359: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3360: #ifdef GSSAPI
3361: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3362: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3363: #endif /* GSSAPI */
3364: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3365: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3366: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3367: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3368: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3369: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3370: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3371: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3372: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3373: dump_cfg_fmtint(oRequestTTY, o->request_tty);
1.359 djm 3374: dump_cfg_fmtint(oSessionType, o->session_type);
1.360 djm 3375: dump_cfg_fmtint(oStdinNull, o->stdin_null);
1.361 djm 3376: dump_cfg_fmtint(oForkAfterAuthentication, o->fork_after_authentication);
1.221 djm 3377: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3378: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3379: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3380: dump_cfg_fmtint(oTunnel, o->tun_open);
3381: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3382: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3383: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.370 djm 3384: dump_cfg_fmtint(oEnableEscapeCommandline, o->enable_escape_commandline);
1.221 djm 3385:
3386: /* Integer options */
3387: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3388: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3389: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3390: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3391: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3392: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
1.369 djm 3393: dump_cfg_int(oRequiredRSASize, o->required_rsa_size);
1.221 djm 3394:
3395: /* String options */
3396: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3397: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3398: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3399: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3400: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3401: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3402: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3403: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3404: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3405: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3406: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3407: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3408: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3409: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3410: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3411: dump_cfg_string(oMacs, o->macs);
1.266 djm 3412: #ifdef ENABLE_PKCS11
1.221 djm 3413: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3414: #endif
1.310 djm 3415: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3416: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3417: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3418: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3419: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3420: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.379 ! djm 3421: dump_cfg_string(oTag, o->tag);
1.221 djm 3422:
1.230 djm 3423: /* Forwards */
1.221 djm 3424: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3425: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3426: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3427:
3428: /* String array options */
3429: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3430: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3431: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3432: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3433: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3434: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3435: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3436: dump_cfg_strarray_oneline(oLogVerbose,
3437: o->num_log_verbose, o->log_verbose);
1.221 djm 3438:
3439: /* Special cases */
1.351 markus 3440:
3441: /* PermitRemoteOpen */
3442: if (o->num_permitted_remote_opens == 0)
3443: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3444: else
3445: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3446: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3447:
3448: /* AddKeysToAgent */
3449: if (o->add_keys_to_agent_lifespan <= 0)
3450: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3451: else {
3452: printf("addkeystoagent%s %d\n",
3453: o->add_keys_to_agent == 3 ? " confirm" : "",
3454: o->add_keys_to_agent_lifespan);
3455: }
1.319 djm 3456:
3457: /* oForwardAgent */
3458: if (o->forward_agent_sock_path == NULL)
3459: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3460: else
3461: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3462:
3463: /* oConnectTimeout */
3464: if (o->connection_timeout == -1)
3465: printf("connecttimeout none\n");
3466: else
3467: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3468:
3469: /* oTunnelDevice */
3470: printf("tunneldevice");
3471: if (o->tun_local == SSH_TUNID_ANY)
3472: printf(" any");
3473: else
3474: printf(" %d", o->tun_local);
3475: if (o->tun_remote == SSH_TUNID_ANY)
3476: printf(":any");
3477: else
3478: printf(":%d", o->tun_remote);
3479: printf("\n");
3480:
3481: /* oCanonicalizePermittedCNAMEs */
1.362 djm 3482: printf("canonicalizePermittedcnames");
3483: if (o->num_permitted_cnames == 0)
1.363 djm 3484: printf(" none");
1.362 djm 3485: for (i = 0; i < o->num_permitted_cnames; i++) {
3486: printf(" %s:%s", o->permitted_cnames[i].source_list,
3487: o->permitted_cnames[i].target_list);
1.221 djm 3488: }
1.362 djm 3489: printf("\n");
1.221 djm 3490:
3491: /* oControlPersist */
3492: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3493: dump_cfg_fmtint(oControlPersist, o->control_persist);
3494: else
3495: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3496:
3497: /* oEscapeChar */
3498: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3499: printf("escapechar none\n");
3500: else {
1.257 djm 3501: vis(buf, o->escape_char, VIS_WHITE, 0);
3502: printf("escapechar %s\n", buf);
1.221 djm 3503: }
3504:
3505: /* oIPQoS */
3506: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3507: printf("%s\n", iptos2str(o->ip_qos_bulk));
3508:
3509: /* oRekeyLimit */
1.249 dtucker 3510: printf("rekeylimit %llu %d\n",
3511: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3512:
3513: /* oStreamLocalBindMask */
3514: printf("streamlocalbindmask 0%o\n",
3515: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3516:
3517: /* oLogFacility */
3518: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3519:
3520: /* oProxyCommand / oProxyJump */
3521: if (o->jump_host == NULL)
3522: dump_cfg_string(oProxyCommand, o->proxy_command);
3523: else {
3524: /* Check for numeric addresses */
3525: i = strchr(o->jump_host, ':') != NULL ||
3526: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3527: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3528: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3529: /* optional additional jump spec */
3530: o->jump_extra == NULL ? "" : o->jump_extra,
3531: o->jump_extra == NULL ? "" : ",",
1.257 djm 3532: /* optional user */
3533: o->jump_user == NULL ? "" : o->jump_user,
3534: o->jump_user == NULL ? "" : "@",
3535: /* opening [ if hostname is numeric */
3536: i ? "[" : "",
3537: /* mandatory hostname */
3538: o->jump_host,
3539: /* closing ] if hostname is numeric */
3540: i ? "]" : "",
3541: /* optional port number */
3542: o->jump_port <= 0 ? "" : ":",
1.259 djm 3543: o->jump_port <= 0 ? "" : buf);
1.257 djm 3544: }
1.1 deraadt 3545: }
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