Annotation of src/usr.bin/ssh/readconf.c, Revision 1.337
1.337 ! djm 1: /* $OpenBSD: readconf.c,v 1.336 2020/10/03 08:30:47 djm Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
21: #include <netinet/in.h>
1.190 djm 22: #include <netinet/ip.h>
1.148 stevesk 23:
24: #include <ctype.h>
1.154 stevesk 25: #include <errno.h>
1.206 djm 26: #include <fcntl.h>
1.252 djm 27: #include <glob.h>
1.155 stevesk 28: #include <netdb.h>
1.206 djm 29: #include <paths.h>
30: #include <pwd.h>
1.159 deraadt 31: #include <signal.h>
1.158 stevesk 32: #include <stdio.h>
1.157 stevesk 33: #include <string.h>
1.312 deraadt 34: #include <stdarg.h>
1.156 stevesk 35: #include <unistd.h>
1.228 deraadt 36: #include <limits.h>
1.200 dtucker 37: #include <util.h>
1.221 djm 38: #include <vis.h>
1.1 deraadt 39:
1.159 deraadt 40: #include "xmalloc.h"
1.1 deraadt 41: #include "ssh.h"
1.297 djm 42: #include "ssherr.h"
1.25 markus 43: #include "compat.h"
1.58 markus 44: #include "cipher.h"
1.55 markus 45: #include "pathnames.h"
1.58 markus 46: #include "log.h"
1.227 djm 47: #include "sshkey.h"
1.220 millert 48: #include "misc.h"
1.58 markus 49: #include "readconf.h"
50: #include "match.h"
1.62 markus 51: #include "kex.h"
52: #include "mac.h"
1.206 djm 53: #include "uidswap.h"
1.221 djm 54: #include "myproposal.h"
1.224 djm 55: #include "digest.h"
1.1 deraadt 56:
57: /* Format of the configuration file:
58:
59: # Configuration data is parsed as follows:
60: # 1. command line options
61: # 2. user-specific file
62: # 3. system-wide file
63: # Any configuration value is only changed the first time it is set.
64: # Thus, host-specific definitions should be at the beginning of the
65: # configuration file, and defaults at the end.
66:
67: # Host-specific declarations. These may override anything above. A single
68: # host may match multiple declarations; these are processed in the order
69: # that they are given in.
70:
71: Host *.ngs.fi ngs.fi
1.96 markus 72: User foo
1.1 deraadt 73:
74: Host fake.com
1.306 jmc 75: Hostname another.host.name.real.org
1.1 deraadt 76: User blaah
77: Port 34289
78: ForwardX11 no
79: ForwardAgent no
80:
81: Host books.com
82: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 83: Ciphers 3des-cbc
1.1 deraadt 84:
85: Host fascist.blob.com
86: Port 23123
87: User tylonen
88: PasswordAuthentication no
89:
90: Host puukko.hut.fi
91: User t35124p
92: ProxyCommand ssh-proxy %h %p
93:
94: Host *.fr
1.96 markus 95: PublicKeyAuthentication no
1.1 deraadt 96:
97: Host *.su
1.266 djm 98: Ciphers aes128-ctr
1.1 deraadt 99: PasswordAuthentication no
100:
1.144 reyk 101: Host vpn.fake.com
102: Tunnel yes
103: TunnelDevice 3
104:
1.1 deraadt 105: # Defaults for various options
106: Host *
107: ForwardAgent no
1.50 markus 108: ForwardX11 no
1.1 deraadt 109: PasswordAuthentication yes
110: StrictHostKeyChecking yes
1.126 markus 111: TcpKeepAlive no
1.1 deraadt 112: IdentityFile ~/.ssh/identity
113: Port 22
114: EscapeChar ~
115:
116: */
117:
1.252 djm 118: static int read_config_file_depth(const char *filename, struct passwd *pw,
119: const char *host, const char *original_host, Options *options,
1.302 djm 120: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 121: static int process_config_line_depth(Options *options, struct passwd *pw,
122: const char *host, const char *original_host, char *line,
1.302 djm 123: const char *filename, int linenum, int *activep, int flags,
124: int *want_final_pass, int depth);
1.252 djm 125:
1.1 deraadt 126: /* Keyword tokens. */
127:
1.17 markus 128: typedef enum {
129: oBadOption,
1.252 djm 130: oHost, oMatch, oInclude,
1.186 djm 131: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
132: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 133: oPasswordAuthentication,
1.59 markus 134: oChallengeResponseAuthentication, oXAuthLocation,
1.317 dtucker 135: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.253 markus 136: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 137: oUser, oEscapeChar, oProxyCommand,
1.17 markus 138: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
139: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 140: oTCPKeepAlive, oNumberOfPasswordPrompts,
141: oLogFacility, oLogLevel, oCiphers, oMacs,
1.221 djm 142: oPubkeyAuthentication,
1.67 markus 143: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 144: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 145: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 146: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 147: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 148: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 149: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 150: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 151: oHashKnownHosts,
1.277 bluhm 152: oTunnel, oTunnelDevice,
153: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 154: oVisualHostKey,
1.205 djm 155: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 156: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
157: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 158: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.230 djm 159: oFingerprintHash, oUpdateHostkeys, oHostbasedKeyTypes,
1.298 djm 160: oPubkeyAcceptedKeyTypes, oCASignatureAlgorithms, oProxyJump,
1.310 djm 161: oSecurityKeyProvider,
1.273 djm 162: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 163: } OpCodes;
164:
165: /* Textual representations of the tokens. */
166:
1.17 markus 167: static struct {
168: const char *name;
169: OpCodes opcode;
170: } keywords[] = {
1.266 djm 171: /* Deprecated options */
1.273 djm 172: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 173: { "cipher", oDeprecated },
1.266 djm 174: { "fallbacktorsh", oDeprecated },
175: { "globalknownhostsfile2", oDeprecated },
176: { "rhostsauthentication", oDeprecated },
177: { "userknownhostsfile2", oDeprecated },
178: { "useroaming", oDeprecated },
179: { "usersh", oDeprecated },
1.294 dtucker 180: { "useprivilegedport", oDeprecated },
1.266 djm 181:
182: /* Unsupported options */
183: { "afstokenpassing", oUnsupported },
184: { "kerberosauthentication", oUnsupported },
185: { "kerberostgtpassing", oUnsupported },
1.318 dtucker 186: { "rsaauthentication", oUnsupported },
187: { "rhostsrsaauthentication", oUnsupported },
188: { "compressionlevel", oUnsupported },
1.266 djm 189:
190: /* Sometimes-unsupported options */
191: #if defined(GSSAPI)
192: { "gssapiauthentication", oGssAuthentication },
193: { "gssapidelegatecredentials", oGssDelegateCreds },
194: # else
195: { "gssapiauthentication", oUnsupported },
196: { "gssapidelegatecredentials", oUnsupported },
197: #endif
198: #ifdef ENABLE_PKCS11
1.304 djm 199: { "pkcs11provider", oPKCS11Provider },
1.266 djm 200: { "smartcarddevice", oPKCS11Provider },
201: # else
202: { "smartcarddevice", oUnsupported },
203: { "pkcs11provider", oUnsupported },
204: #endif
205:
1.17 markus 206: { "forwardagent", oForwardAgent },
207: { "forwardx11", oForwardX11 },
1.123 markus 208: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 209: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 210: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 211: { "xauthlocation", oXAuthLocation },
1.17 markus 212: { "gatewayports", oGatewayPorts },
213: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 214: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
215: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.50 markus 216: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 217: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 218: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 219: { "challengeresponseauthentication", oChallengeResponseAuthentication },
220: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
221: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.17 markus 222: { "identityfile", oIdentityFile },
1.174 stevesk 223: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 224: { "identitiesonly", oIdentitiesOnly },
1.241 djm 225: { "certificatefile", oCertificateFile },
1.246 jcs 226: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 227: { "identityagent", oIdentityAgent },
1.306 jmc 228: { "hostname", oHostname },
1.52 markus 229: { "hostkeyalias", oHostKeyAlias },
1.17 markus 230: { "proxycommand", oProxyCommand },
231: { "port", oPort },
1.25 markus 232: { "ciphers", oCiphers },
1.62 markus 233: { "macs", oMacs },
1.17 markus 234: { "remoteforward", oRemoteForward },
235: { "localforward", oLocalForward },
236: { "user", oUser },
237: { "host", oHost },
1.206 djm 238: { "match", oMatch },
1.17 markus 239: { "escapechar", oEscapeChar },
240: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 241: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 242: { "connectionattempts", oConnectionAttempts },
243: { "batchmode", oBatchMode },
244: { "checkhostip", oCheckHostIP },
245: { "stricthostkeychecking", oStrictHostKeyChecking },
246: { "compression", oCompression },
1.126 markus 247: { "tcpkeepalive", oTCPKeepAlive },
248: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 249: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 250: { "syslogfacility", oLogFacility },
1.17 markus 251: { "loglevel", oLogLevel },
1.71 markus 252: { "dynamicforward", oDynamicForward },
1.67 markus 253: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 254: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 255: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 256: { "bindaddress", oBindAddress },
1.282 djm 257: { "bindinterface", oBindInterface },
1.93 deraadt 258: { "clearallforwardings", oClearAllForwardings },
1.101 markus 259: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 260: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 261: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 262: { "rekeylimit", oRekeyLimit },
1.111 djm 263: { "connecttimeout", oConnectTimeout },
1.112 djm 264: { "addressfamily", oAddressFamily },
1.127 markus 265: { "serveraliveinterval", oServerAliveInterval },
266: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 267: { "sendenv", oSendEnv },
1.290 djm 268: { "setenv", oSetEnv },
1.132 djm 269: { "controlpath", oControlPath },
270: { "controlmaster", oControlMaster },
1.187 djm 271: { "controlpersist", oControlPersist },
1.136 djm 272: { "hashknownhosts", oHashKnownHosts },
1.252 djm 273: { "include", oInclude },
1.144 reyk 274: { "tunnel", oTunnel },
275: { "tunneldevice", oTunnelDevice },
276: { "localcommand", oLocalCommand },
277: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 278: { "remotecommand", oRemoteCommand },
1.167 grunk 279: { "visualhostkey", oVisualHostKey },
1.189 djm 280: { "kexalgorithms", oKexAlgorithms },
1.190 djm 281: { "ipqos", oIPQoS },
1.192 djm 282: { "requesttty", oRequestTTY },
1.205 djm 283: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 284: { "canonicaldomains", oCanonicalDomains },
1.209 djm 285: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
286: { "canonicalizehostname", oCanonicalizeHostname },
287: { "canonicalizemaxdots", oCanonicalizeMaxDots },
288: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 289: { "streamlocalbindmask", oStreamLocalBindMask },
290: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 291: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 292: { "fingerprinthash", oFingerprintHash },
1.229 djm 293: { "updatehostkeys", oUpdateHostkeys },
1.230 djm 294: { "hostbasedkeytypes", oHostbasedKeyTypes },
1.238 markus 295: { "pubkeyacceptedkeytypes", oPubkeyAcceptedKeyTypes },
1.199 djm 296: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 297: { "proxyjump", oProxyJump },
1.318 dtucker 298: { "securitykeyprovider", oSecurityKeyProvider },
1.171 djm 299:
1.92 stevesk 300: { NULL, oBadOption }
1.13 markus 301: };
302:
1.320 dtucker 303: static char *kex_default_pk_alg_filtered;
304:
305: const char *
306: kex_default_pk_alg(void)
307: {
308: if (kex_default_pk_alg_filtered == NULL)
309: fatal("kex_default_pk_alg not initialized.");
310: return kex_default_pk_alg_filtered;
311: }
312:
1.327 dtucker 313: char *
314: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
315: const char *user)
316: {
317: struct ssh_digest_ctx *md;
318: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
319:
320: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
321: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
322: ssh_digest_update(md, host, strlen(host)) < 0 ||
323: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
324: ssh_digest_update(md, user, strlen(user)) < 0 ||
325: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
326: fatal("%s: mux digest failed", __func__);
327: ssh_digest_free(md);
328: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
329: }
330:
1.19 markus 331: /*
332: * Adds a local TCP/IP port forward to options. Never returns if there is an
333: * error.
334: */
1.1 deraadt 335:
1.26 markus 336: void
1.220 millert 337: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 338: {
1.220 millert 339: struct Forward *fwd;
1.251 djm 340: int i;
1.185 djm 341:
1.251 djm 342: /* Don't add duplicates */
343: for (i = 0; i < options->num_local_forwards; i++) {
344: if (forward_equals(newfwd, options->local_forwards + i))
345: return;
346: }
1.234 deraadt 347: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 348: options->num_local_forwards + 1,
349: sizeof(*options->local_forwards));
1.17 markus 350: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 351:
1.172 stevesk 352: fwd->listen_host = newfwd->listen_host;
1.135 djm 353: fwd->listen_port = newfwd->listen_port;
1.220 millert 354: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 355: fwd->connect_host = newfwd->connect_host;
1.135 djm 356: fwd->connect_port = newfwd->connect_port;
1.220 millert 357: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 358: }
359:
1.19 markus 360: /*
361: * Adds a remote TCP/IP port forward to options. Never returns if there is
362: * an error.
363: */
1.1 deraadt 364:
1.26 markus 365: void
1.220 millert 366: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 367: {
1.220 millert 368: struct Forward *fwd;
1.251 djm 369: int i;
1.185 djm 370:
1.251 djm 371: /* Don't add duplicates */
372: for (i = 0; i < options->num_remote_forwards; i++) {
373: if (forward_equals(newfwd, options->remote_forwards + i))
374: return;
375: }
1.234 deraadt 376: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 377: options->num_remote_forwards + 1,
378: sizeof(*options->remote_forwards));
1.17 markus 379: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 380:
1.172 stevesk 381: fwd->listen_host = newfwd->listen_host;
1.135 djm 382: fwd->listen_port = newfwd->listen_port;
1.220 millert 383: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 384: fwd->connect_host = newfwd->connect_host;
1.135 djm 385: fwd->connect_port = newfwd->connect_port;
1.220 millert 386: fwd->connect_path = newfwd->connect_path;
1.194 markus 387: fwd->handle = newfwd->handle;
1.184 markus 388: fwd->allocated_port = 0;
1.1 deraadt 389: }
390:
1.90 stevesk 391: static void
392: clear_forwardings(Options *options)
393: {
394: int i;
395:
1.135 djm 396: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 397: free(options->local_forwards[i].listen_host);
1.220 millert 398: free(options->local_forwards[i].listen_path);
1.202 djm 399: free(options->local_forwards[i].connect_host);
1.220 millert 400: free(options->local_forwards[i].connect_path);
1.135 djm 401: }
1.185 djm 402: if (options->num_local_forwards > 0) {
1.202 djm 403: free(options->local_forwards);
1.185 djm 404: options->local_forwards = NULL;
405: }
1.90 stevesk 406: options->num_local_forwards = 0;
1.135 djm 407: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 408: free(options->remote_forwards[i].listen_host);
1.220 millert 409: free(options->remote_forwards[i].listen_path);
1.202 djm 410: free(options->remote_forwards[i].connect_host);
1.220 millert 411: free(options->remote_forwards[i].connect_path);
1.135 djm 412: }
1.185 djm 413: if (options->num_remote_forwards > 0) {
1.202 djm 414: free(options->remote_forwards);
1.185 djm 415: options->remote_forwards = NULL;
416: }
1.90 stevesk 417: options->num_remote_forwards = 0;
1.145 reyk 418: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 419: }
420:
1.195 dtucker 421: void
1.241 djm 422: add_certificate_file(Options *options, const char *path, int userprovided)
423: {
424: int i;
425:
426: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
427: fatal("Too many certificate files specified (max %d)",
428: SSH_MAX_CERTIFICATE_FILES);
429:
430: /* Avoid registering duplicates */
431: for (i = 0; i < options->num_certificate_files; i++) {
432: if (options->certificate_file_userprovided[i] == userprovided &&
433: strcmp(options->certificate_files[i], path) == 0) {
434: debug2("%s: ignoring duplicate key %s", __func__, path);
435: return;
436: }
437: }
438:
439: options->certificate_file_userprovided[options->num_certificate_files] =
440: userprovided;
441: options->certificate_files[options->num_certificate_files++] =
442: xstrdup(path);
443: }
444:
445: void
1.195 dtucker 446: add_identity_file(Options *options, const char *dir, const char *filename,
447: int userprovided)
448: {
449: char *path;
1.219 djm 450: int i;
1.195 dtucker 451:
452: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
453: fatal("Too many identity files specified (max %d)",
454: SSH_MAX_IDENTITY_FILES);
455:
456: if (dir == NULL) /* no dir, filename is absolute */
457: path = xstrdup(filename);
1.276 djm 458: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
459: fatal("Identity file path %s too long", path);
1.219 djm 460:
461: /* Avoid registering duplicates */
462: for (i = 0; i < options->num_identity_files; i++) {
463: if (options->identity_file_userprovided[i] == userprovided &&
464: strcmp(options->identity_files[i], path) == 0) {
465: debug2("%s: ignoring duplicate key %s", __func__, path);
466: free(path);
467: return;
468: }
469: }
1.195 dtucker 470:
471: options->identity_file_userprovided[options->num_identity_files] =
472: userprovided;
473: options->identity_files[options->num_identity_files++] = path;
474: }
475:
1.206 djm 476: int
477: default_ssh_port(void)
478: {
479: static int port;
480: struct servent *sp;
481:
482: if (port == 0) {
483: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
484: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
485: }
486: return port;
487: }
488:
489: /*
490: * Execute a command in a shell.
491: * Return its exit status or -1 on abnormal exit.
492: */
493: static int
494: execute_in_shell(const char *cmd)
495: {
1.243 dtucker 496: char *shell;
1.206 djm 497: pid_t pid;
1.337 ! djm 498: int status;
1.206 djm 499:
500: if ((shell = getenv("SHELL")) == NULL)
501: shell = _PATH_BSHELL;
1.308 djm 502:
503: if (access(shell, X_OK) == -1) {
504: fatal("Shell \"%s\" is not executable: %s",
505: shell, strerror(errno));
506: }
1.206 djm 507:
508: debug("Executing command: '%.500s'", cmd);
509:
510: /* Fork and execute the command. */
511: if ((pid = fork()) == 0) {
1.245 djm 512: char *argv[4];
1.206 djm 513:
1.337 ! djm 514: if (stdfd_devnull(1, 1, 0) == -1)
! 515: fatal("%s: stdfd_devnull failed", __func__);
1.206 djm 516: closefrom(STDERR_FILENO + 1);
1.245 djm 517:
518: argv[0] = shell;
519: argv[1] = "-c";
520: argv[2] = xstrdup(cmd);
521: argv[3] = NULL;
1.206 djm 522:
523: execv(argv[0], argv);
524: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
525: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 526: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 527: kill(getpid(), SIGTERM);
528: _exit(1);
529: }
530: /* Parent. */
1.307 deraadt 531: if (pid == -1)
1.206 djm 532: fatal("%s: fork: %.100s", __func__, strerror(errno));
533:
534: while (waitpid(pid, &status, 0) == -1) {
535: if (errno != EINTR && errno != EAGAIN)
536: fatal("%s: waitpid: %s", __func__, strerror(errno));
537: }
538: if (!WIFEXITED(status)) {
539: error("command '%.100s' exited abnormally", cmd);
540: return -1;
1.221 djm 541: }
1.206 djm 542: debug3("command returned status %d", WEXITSTATUS(status));
543: return WEXITSTATUS(status);
544: }
545:
546: /*
547: * Parse and execute a Match directive.
548: */
549: static int
550: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 551: const char *host_arg, const char *original_host, int final_pass,
552: int *want_final_pass, const char *filename, int linenum)
1.206 djm 553: {
1.221 djm 554: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 555: const char *ruser;
1.221 djm 556: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 557: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 558: char uidstr[32];
1.206 djm 559:
560: /*
561: * Configuration is likely to be incomplete at this point so we
562: * must be prepared to use default values.
563: */
564: port = options->port <= 0 ? default_ssh_port() : options->port;
565: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 566: if (final_pass) {
1.250 djm 567: host = xstrdup(options->hostname);
568: } else if (options->hostname != NULL) {
1.212 djm 569: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 570: host = percent_expand(options->hostname,
571: "h", host_arg, (char *)NULL);
1.250 djm 572: } else {
1.211 djm 573: host = xstrdup(host_arg);
1.250 djm 574: }
1.206 djm 575:
1.221 djm 576: debug2("checking match for '%s' host %s originally %s",
577: cp, host, original_host);
578: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
579: criteria = NULL;
580: this_result = 1;
581: if ((negate = attrib[0] == '!'))
582: attrib++;
583: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 584: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 585: if (attributes > 1 ||
1.213 dtucker 586: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 587: error("%.200s line %d: '%s' cannot be combined "
588: "with other Match attributes",
589: filename, linenum, oattrib);
1.213 dtucker 590: result = -1;
591: goto out;
592: }
1.221 djm 593: if (result)
594: result = negate ? 0 : 1;
1.213 dtucker 595: goto out;
596: }
1.221 djm 597: attributes++;
1.302 djm 598: if (strcasecmp(attrib, "canonical") == 0 ||
599: strcasecmp(attrib, "final") == 0) {
600: /*
601: * If the config requests "Match final" then remember
602: * this so we can perform a second pass later.
603: */
604: if (strcasecmp(attrib, "final") == 0 &&
605: want_final_pass != NULL)
606: *want_final_pass = 1;
607: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 608: if (r == (negate ? 1 : 0))
609: this_result = result = 0;
610: debug3("%.200s line %d: %smatched '%s'",
611: filename, linenum,
612: this_result ? "" : "not ", oattrib);
613: continue;
614: }
615: /* All other criteria require an argument */
1.206 djm 616: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
617: error("Missing Match criteria for %s", attrib);
1.211 djm 618: result = -1;
619: goto out;
1.206 djm 620: }
621: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 622: criteria = xstrdup(host);
1.235 djm 623: r = match_hostname(host, arg) == 1;
1.221 djm 624: if (r == (negate ? 1 : 0))
625: this_result = result = 0;
1.206 djm 626: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 627: criteria = xstrdup(original_host);
1.235 djm 628: r = match_hostname(original_host, arg) == 1;
1.221 djm 629: if (r == (negate ? 1 : 0))
630: this_result = result = 0;
1.206 djm 631: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 632: criteria = xstrdup(ruser);
1.235 djm 633: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 634: if (r == (negate ? 1 : 0))
635: this_result = result = 0;
1.206 djm 636: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 637: criteria = xstrdup(pw->pw_name);
1.235 djm 638: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 639: if (r == (negate ? 1 : 0))
640: this_result = result = 0;
1.210 djm 641: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 642: char *conn_hash_hex, *keyalias;
1.327 dtucker 643:
1.206 djm 644: if (gethostname(thishost, sizeof(thishost)) == -1)
645: fatal("gethostname: %s", strerror(errno));
646: strlcpy(shorthost, thishost, sizeof(shorthost));
647: shorthost[strcspn(thishost, ".")] = '\0';
648: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 649: snprintf(uidstr, sizeof(uidstr), "%llu",
650: (unsigned long long)pw->pw_uid);
1.327 dtucker 651: conn_hash_hex = ssh_connection_hash(thishost, host,
1.328 dtucker 652: portstr, ruser);
1.333 dtucker 653: keyalias = options->host_key_alias ?
654: options->host_key_alias : host;
1.206 djm 655:
656: cmd = percent_expand(arg,
1.327 dtucker 657: "C", conn_hash_hex,
1.206 djm 658: "L", shorthost,
659: "d", pw->pw_dir,
660: "h", host,
1.333 dtucker 661: "k", keyalias,
1.206 djm 662: "l", thishost,
1.221 djm 663: "n", original_host,
1.206 djm 664: "p", portstr,
665: "r", ruser,
666: "u", pw->pw_name,
1.288 djm 667: "i", uidstr,
1.206 djm 668: (char *)NULL);
1.327 dtucker 669: free(conn_hash_hex);
1.217 djm 670: if (result != 1) {
671: /* skip execution if prior predicate failed */
1.221 djm 672: debug3("%.200s line %d: skipped exec "
673: "\"%.100s\"", filename, linenum, cmd);
674: free(cmd);
675: continue;
676: }
677: r = execute_in_shell(cmd);
678: if (r == -1) {
679: fatal("%.200s line %d: match exec "
680: "'%.100s' error", filename,
681: linenum, cmd);
1.217 djm 682: }
1.221 djm 683: criteria = xstrdup(cmd);
1.206 djm 684: free(cmd);
1.221 djm 685: /* Force exit status to boolean */
686: r = r == 0;
687: if (r == (negate ? 1 : 0))
688: this_result = result = 0;
1.206 djm 689: } else {
690: error("Unsupported Match attribute %s", attrib);
1.211 djm 691: result = -1;
692: goto out;
1.206 djm 693: }
1.221 djm 694: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
695: filename, linenum, this_result ? "": "not ",
696: oattrib, criteria);
697: free(criteria);
1.213 dtucker 698: }
699: if (attributes == 0) {
700: error("One or more attributes required for Match");
701: result = -1;
702: goto out;
1.206 djm 703: }
1.221 djm 704: out:
705: if (result != -1)
706: debug2("match %sfound", result ? "" : "not ");
1.206 djm 707: *condition = cp;
1.211 djm 708: free(host);
1.206 djm 709: return result;
710: }
711:
1.286 djm 712: /* Remove environment variable by pattern */
713: static void
714: rm_env(Options *options, const char *arg, const char *filename, int linenum)
715: {
1.330 djm 716: int i, j, onum_send_env = options->num_send_env;
1.286 djm 717: char *cp;
718:
719: /* Remove an environment variable */
720: for (i = 0; i < options->num_send_env; ) {
721: cp = xstrdup(options->send_env[i]);
722: if (!match_pattern(cp, arg + 1)) {
723: free(cp);
724: i++;
725: continue;
726: }
727: debug3("%s line %d: removing environment %s",
728: filename, linenum, cp);
729: free(cp);
730: free(options->send_env[i]);
731: options->send_env[i] = NULL;
732: for (j = i; j < options->num_send_env - 1; j++) {
733: options->send_env[j] = options->send_env[j + 1];
734: options->send_env[j + 1] = NULL;
735: }
736: options->num_send_env--;
737: /* NB. don't increment i */
1.330 djm 738: }
739: if (onum_send_env != options->num_send_env) {
740: options->send_env = xrecallocarray(options->send_env,
741: onum_send_env, options->num_send_env,
742: sizeof(*options->send_env));
1.286 djm 743: }
744: }
745:
1.19 markus 746: /*
1.70 stevesk 747: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 748: */
1.26 markus 749: static OpCodes
1.199 djm 750: parse_token(const char *cp, const char *filename, int linenum,
751: const char *ignored_unknown)
1.1 deraadt 752: {
1.199 djm 753: int i;
1.1 deraadt 754:
1.17 markus 755: for (i = 0; keywords[i].name; i++)
1.199 djm 756: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 757: return keywords[i].opcode;
1.235 djm 758: if (ignored_unknown != NULL &&
759: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 760: return oIgnoredUnknownOption;
1.75 stevesk 761: error("%s: line %d: Bad configuration option: %s",
762: filename, linenum, cp);
1.17 markus 763: return oBadOption;
1.1 deraadt 764: }
765:
1.207 djm 766: /* Multistate option parsing */
767: struct multistate {
768: char *key;
769: int value;
770: };
771: static const struct multistate multistate_flag[] = {
772: { "true", 1 },
773: { "false", 0 },
774: { "yes", 1 },
775: { "no", 0 },
776: { NULL, -1 }
777: };
778: static const struct multistate multistate_yesnoask[] = {
779: { "true", 1 },
780: { "false", 0 },
781: { "yes", 1 },
782: { "no", 0 },
783: { "ask", 2 },
784: { NULL, -1 }
785: };
1.278 djm 786: static const struct multistate multistate_strict_hostkey[] = {
787: { "true", SSH_STRICT_HOSTKEY_YES },
788: { "false", SSH_STRICT_HOSTKEY_OFF },
789: { "yes", SSH_STRICT_HOSTKEY_YES },
790: { "no", SSH_STRICT_HOSTKEY_OFF },
791: { "ask", SSH_STRICT_HOSTKEY_ASK },
792: { "off", SSH_STRICT_HOSTKEY_OFF },
793: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
794: { NULL, -1 }
795: };
1.246 jcs 796: static const struct multistate multistate_yesnoaskconfirm[] = {
797: { "true", 1 },
798: { "false", 0 },
799: { "yes", 1 },
800: { "no", 0 },
801: { "ask", 2 },
802: { "confirm", 3 },
803: { NULL, -1 }
804: };
1.207 djm 805: static const struct multistate multistate_addressfamily[] = {
806: { "inet", AF_INET },
807: { "inet6", AF_INET6 },
808: { "any", AF_UNSPEC },
809: { NULL, -1 }
810: };
811: static const struct multistate multistate_controlmaster[] = {
812: { "true", SSHCTL_MASTER_YES },
813: { "yes", SSHCTL_MASTER_YES },
814: { "false", SSHCTL_MASTER_NO },
815: { "no", SSHCTL_MASTER_NO },
816: { "auto", SSHCTL_MASTER_AUTO },
817: { "ask", SSHCTL_MASTER_ASK },
818: { "autoask", SSHCTL_MASTER_AUTO_ASK },
819: { NULL, -1 }
820: };
821: static const struct multistate multistate_tunnel[] = {
822: { "ethernet", SSH_TUNMODE_ETHERNET },
823: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
824: { "true", SSH_TUNMODE_DEFAULT },
825: { "yes", SSH_TUNMODE_DEFAULT },
826: { "false", SSH_TUNMODE_NO },
827: { "no", SSH_TUNMODE_NO },
828: { NULL, -1 }
829: };
830: static const struct multistate multistate_requesttty[] = {
831: { "true", REQUEST_TTY_YES },
832: { "yes", REQUEST_TTY_YES },
833: { "false", REQUEST_TTY_NO },
834: { "no", REQUEST_TTY_NO },
835: { "force", REQUEST_TTY_FORCE },
836: { "auto", REQUEST_TTY_AUTO },
837: { NULL, -1 }
838: };
1.209 djm 839: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 840: { "true", SSH_CANONICALISE_YES },
841: { "false", SSH_CANONICALISE_NO },
842: { "yes", SSH_CANONICALISE_YES },
843: { "no", SSH_CANONICALISE_NO },
844: { "always", SSH_CANONICALISE_ALWAYS },
845: { NULL, -1 }
846: };
1.322 dtucker 847: static const struct multistate multistate_compression[] = {
848: #ifdef WITH_ZLIB
849: { "yes", COMP_ZLIB },
850: #endif
851: { "no", COMP_NONE },
852: { NULL, -1 }
853: };
1.207 djm 854:
1.334 djm 855: static int
856: parse_multistate_value(const char *arg, const char *filename, int linenum,
857: const struct multistate *multistate_ptr)
858: {
859: int i;
860:
861: if (!arg || *arg == '\0')
862: fatal("%s line %d: missing argument.", filename, linenum);
863: for (i = 0; multistate_ptr[i].key != NULL; i++) {
864: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
865: return multistate_ptr[i].value;
866: }
867: return -1;
868: }
869:
1.19 markus 870: /*
871: * Processes a single option line as used in the configuration files. This
872: * only sets those values that have not already been set.
873: */
1.14 markus 874: int
1.206 djm 875: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 876: const char *original_host, char *line, const char *filename,
877: int linenum, int *activep, int flags)
1.1 deraadt 878: {
1.252 djm 879: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 880: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 881: }
882:
883: #define WHITESPACE " \t\r\n"
884: static int
885: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
886: const char *original_host, char *line, const char *filename,
1.302 djm 887: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 888: {
1.193 djm 889: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
890: char **cpptr, fwdarg[256];
1.199 djm 891: u_int i, *uintptr, max_entries = 0;
1.252 djm 892: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 893: int remotefwd, dynamicfwd;
1.164 dtucker 894: LogLevel *log_level_ptr;
1.271 dtucker 895: SyslogFacility *log_facility_ptr;
1.201 dtucker 896: long long val64;
1.102 markus 897: size_t len;
1.220 millert 898: struct Forward fwd;
1.207 djm 899: const struct multistate *multistate_ptr;
1.208 djm 900: struct allowed_cname *cname;
1.252 djm 901: glob_t gl;
1.281 dtucker 902: const char *errstr;
1.106 djm 903:
1.206 djm 904: if (activep == NULL) { /* We are processing a command line directive */
905: cmdline = 1;
906: activep = &cmdline;
907: }
908:
1.267 djm 909: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 910: if ((len = strlen(line)) == 0)
911: return 0;
912: for (len--; len > 0; len--) {
1.267 djm 913: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 914: break;
915: line[len] = '\0';
916: }
1.1 deraadt 917:
1.42 provos 918: s = line;
919: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 920: if ((keyword = strdelim(&s)) == NULL)
921: return 0;
1.42 provos 922: /* Ignore leading whitespace. */
923: if (*keyword == '\0')
1.43 markus 924: keyword = strdelim(&s);
1.56 deraadt 925: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 926: return 0;
1.199 djm 927: /* Match lowercase keyword */
1.207 djm 928: lowercase(keyword);
1.17 markus 929:
1.199 djm 930: opcode = parse_token(keyword, filename, linenum,
931: options->ignored_unknown);
1.17 markus 932:
933: switch (opcode) {
934: case oBadOption:
1.19 markus 935: /* don't panic, but count bad options */
936: return -1;
1.273 djm 937: case oIgnore:
938: return 0;
1.199 djm 939: case oIgnoredUnknownOption:
940: debug("%s line %d: Ignored unknown option \"%s\"",
941: filename, linenum, keyword);
942: return 0;
1.111 djm 943: case oConnectTimeout:
944: intptr = &options->connection_timeout;
1.127 markus 945: parse_time:
1.111 djm 946: arg = strdelim(&s);
947: if (!arg || *arg == '\0')
948: fatal("%s line %d: missing time value.",
949: filename, linenum);
1.221 djm 950: if (strcmp(arg, "none") == 0)
951: value = -1;
952: else if ((value = convtime(arg)) == -1)
1.111 djm 953: fatal("%s line %d: invalid time value.",
954: filename, linenum);
1.160 dtucker 955: if (*activep && *intptr == -1)
1.111 djm 956: *intptr = value;
957: break;
958:
1.17 markus 959: case oForwardAgent:
960: intptr = &options->forward_agent;
1.319 djm 961:
962: arg = strdelim(&s);
963: if (!arg || *arg == '\0')
964: fatal("%s line %d: missing argument.",
965: filename, linenum);
966:
967: value = -1;
968: multistate_ptr = multistate_flag;
969: for (i = 0; multistate_ptr[i].key != NULL; i++) {
970: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
971: value = multistate_ptr[i].value;
972: break;
973: }
974: }
975: if (value != -1) {
976: if (*activep && *intptr == -1)
977: *intptr = value;
978: break;
979: }
980: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
981: if (*activep && *intptr == -1)
982: *intptr = 1;
983:
984: charptr = &options->forward_agent_sock_path;
985: goto parse_agent_path;
986:
987: case oForwardX11:
988: intptr = &options->forward_x11;
1.207 djm 989: parse_flag:
990: multistate_ptr = multistate_flag;
991: parse_multistate:
1.42 provos 992: arg = strdelim(&s);
1.334 djm 993: if ((value = parse_multistate_value(arg, filename, linenum,
994: multistate_ptr)) == -1) {
1.207 djm 995: fatal("%s line %d: unsupported option \"%s\".",
996: filename, linenum, arg);
1.334 djm 997: }
1.17 markus 998: if (*activep && *intptr == -1)
999: *intptr = value;
1000: break;
1001:
1.123 markus 1002: case oForwardX11Trusted:
1003: intptr = &options->forward_x11_trusted;
1004: goto parse_flag;
1.221 djm 1005:
1.186 djm 1006: case oForwardX11Timeout:
1007: intptr = &options->forward_x11_timeout;
1008: goto parse_time;
1.123 markus 1009:
1.17 markus 1010: case oGatewayPorts:
1.220 millert 1011: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1012: goto parse_flag;
1013:
1.153 markus 1014: case oExitOnForwardFailure:
1015: intptr = &options->exit_on_forward_failure;
1016: goto parse_flag;
1017:
1.17 markus 1018: case oPasswordAuthentication:
1019: intptr = &options->password_authentication;
1020: goto parse_flag;
1021:
1.48 markus 1022: case oKbdInteractiveAuthentication:
1023: intptr = &options->kbd_interactive_authentication;
1024: goto parse_flag;
1025:
1026: case oKbdInteractiveDevices:
1027: charptr = &options->kbd_interactive_devices;
1028: goto parse_string;
1029:
1.50 markus 1030: case oPubkeyAuthentication:
1031: intptr = &options->pubkey_authentication;
1.30 markus 1032: goto parse_flag;
1033:
1.72 markus 1034: case oHostbasedAuthentication:
1035: intptr = &options->hostbased_authentication;
1036: goto parse_flag;
1037:
1.59 markus 1038: case oChallengeResponseAuthentication:
1.78 markus 1039: intptr = &options->challenge_response_authentication;
1.17 markus 1040: goto parse_flag;
1.108 jakob 1041:
1.118 markus 1042: case oGssAuthentication:
1043: intptr = &options->gss_authentication;
1044: goto parse_flag;
1045:
1046: case oGssDelegateCreds:
1047: intptr = &options->gss_deleg_creds;
1048: goto parse_flag;
1049:
1.17 markus 1050: case oBatchMode:
1051: intptr = &options->batch_mode;
1052: goto parse_flag;
1053:
1054: case oCheckHostIP:
1055: intptr = &options->check_host_ip;
1.167 grunk 1056: goto parse_flag;
1.17 markus 1057:
1.107 jakob 1058: case oVerifyHostKeyDNS:
1059: intptr = &options->verify_host_key_dns;
1.207 djm 1060: multistate_ptr = multistate_yesnoask;
1061: goto parse_multistate;
1.107 jakob 1062:
1.17 markus 1063: case oStrictHostKeyChecking:
1064: intptr = &options->strict_host_key_checking;
1.278 djm 1065: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1066: goto parse_multistate;
1.17 markus 1067:
1068: case oCompression:
1069: intptr = &options->compression;
1.322 dtucker 1070: multistate_ptr = multistate_compression;
1071: goto parse_multistate;
1.17 markus 1072:
1.126 markus 1073: case oTCPKeepAlive:
1074: intptr = &options->tcp_keep_alive;
1.17 markus 1075: goto parse_flag;
1076:
1.91 markus 1077: case oNoHostAuthenticationForLocalhost:
1078: intptr = &options->no_host_authentication_for_localhost;
1079: goto parse_flag;
1080:
1.17 markus 1081: case oNumberOfPasswordPrompts:
1082: intptr = &options->number_of_password_prompts;
1083: goto parse_int;
1084:
1.105 markus 1085: case oRekeyLimit:
1086: arg = strdelim(&s);
1087: if (!arg || *arg == '\0')
1.198 dtucker 1088: fatal("%.200s line %d: Missing argument.", filename,
1089: linenum);
1090: if (strcmp(arg, "default") == 0) {
1091: val64 = 0;
1092: } else {
1.200 dtucker 1093: if (scan_scaled(arg, &val64) == -1)
1094: fatal("%.200s line %d: Bad number '%s': %s",
1095: filename, linenum, arg, strerror(errno));
1.198 dtucker 1096: if (val64 != 0 && val64 < 16)
1097: fatal("%.200s line %d: RekeyLimit too small",
1098: filename, linenum);
1.105 markus 1099: }
1.165 djm 1100: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1101: options->rekey_limit = val64;
1.198 dtucker 1102: if (s != NULL) { /* optional rekey interval present */
1103: if (strcmp(s, "none") == 0) {
1104: (void)strdelim(&s); /* discard */
1105: break;
1106: }
1107: intptr = &options->rekey_interval;
1108: goto parse_time;
1109: }
1.105 markus 1110: break;
1111:
1.17 markus 1112: case oIdentityFile:
1.42 provos 1113: arg = strdelim(&s);
1.40 ho 1114: if (!arg || *arg == '\0')
1.17 markus 1115: fatal("%.200s line %d: Missing argument.", filename, linenum);
1116: if (*activep) {
1.50 markus 1117: intptr = &options->num_identity_files;
1.27 markus 1118: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 1119: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 1120: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 1121: add_identity_file(options, NULL,
1122: arg, flags & SSHCONF_USERCONF);
1.17 markus 1123: }
1124: break;
1125:
1.241 djm 1126: case oCertificateFile:
1127: arg = strdelim(&s);
1128: if (!arg || *arg == '\0')
1129: fatal("%.200s line %d: Missing argument.",
1130: filename, linenum);
1131: if (*activep) {
1132: intptr = &options->num_certificate_files;
1133: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1134: fatal("%.200s line %d: Too many certificate "
1135: "files specified (max %d).",
1136: filename, linenum,
1137: SSH_MAX_CERTIFICATE_FILES);
1138: }
1139: add_certificate_file(options, arg,
1140: flags & SSHCONF_USERCONF);
1141: }
1142: break;
1143:
1.34 markus 1144: case oXAuthLocation:
1145: charptr=&options->xauth_location;
1146: goto parse_string;
1147:
1.17 markus 1148: case oUser:
1149: charptr = &options->user;
1150: parse_string:
1.42 provos 1151: arg = strdelim(&s);
1.40 ho 1152: if (!arg || *arg == '\0')
1.193 djm 1153: fatal("%.200s line %d: Missing argument.",
1154: filename, linenum);
1.17 markus 1155: if (*activep && *charptr == NULL)
1.38 provos 1156: *charptr = xstrdup(arg);
1.17 markus 1157: break;
1158:
1159: case oGlobalKnownHostsFile:
1.193 djm 1160: cpptr = (char **)&options->system_hostfiles;
1161: uintptr = &options->num_system_hostfiles;
1162: max_entries = SSH_MAX_HOSTS_FILES;
1163: parse_char_array:
1164: if (*activep && *uintptr == 0) {
1165: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1166: if ((*uintptr) >= max_entries)
1167: fatal("%s line %d: "
1.329 dtucker 1168: "too many known hosts files.",
1.193 djm 1169: filename, linenum);
1170: cpptr[(*uintptr)++] = xstrdup(arg);
1171: }
1172: }
1173: return 0;
1.17 markus 1174:
1175: case oUserKnownHostsFile:
1.193 djm 1176: cpptr = (char **)&options->user_hostfiles;
1177: uintptr = &options->num_user_hostfiles;
1178: max_entries = SSH_MAX_HOSTS_FILES;
1179: goto parse_char_array;
1.27 markus 1180:
1.306 jmc 1181: case oHostname:
1.17 markus 1182: charptr = &options->hostname;
1183: goto parse_string;
1184:
1.52 markus 1185: case oHostKeyAlias:
1186: charptr = &options->host_key_alias;
1187: goto parse_string;
1188:
1.67 markus 1189: case oPreferredAuthentications:
1190: charptr = &options->preferred_authentications;
1191: goto parse_string;
1192:
1.77 markus 1193: case oBindAddress:
1194: charptr = &options->bind_address;
1195: goto parse_string;
1196:
1.282 djm 1197: case oBindInterface:
1198: charptr = &options->bind_interface;
1199: goto parse_string;
1200:
1.183 markus 1201: case oPKCS11Provider:
1202: charptr = &options->pkcs11_provider;
1.86 markus 1203: goto parse_string;
1.85 jakob 1204:
1.310 djm 1205: case oSecurityKeyProvider:
1206: charptr = &options->sk_provider;
1207: goto parse_string;
1208:
1.17 markus 1209: case oProxyCommand:
1.144 reyk 1210: charptr = &options->proxy_command;
1.257 djm 1211: /* Ignore ProxyCommand if ProxyJump already specified */
1212: if (options->jump_host != NULL)
1213: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1214: parse_command:
1.113 markus 1215: if (s == NULL)
1216: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1217: len = strspn(s, WHITESPACE "=");
1.17 markus 1218: if (*activep && *charptr == NULL)
1.102 markus 1219: *charptr = xstrdup(s + len);
1.17 markus 1220: return 0;
1221:
1.257 djm 1222: case oProxyJump:
1223: if (s == NULL) {
1224: fatal("%.200s line %d: Missing argument.",
1225: filename, linenum);
1226: }
1227: len = strspn(s, WHITESPACE "=");
1228: if (parse_jump(s + len, options, *activep) == -1) {
1229: fatal("%.200s line %d: Invalid ProxyJump \"%s\"",
1230: filename, linenum, s + len);
1231: }
1232: return 0;
1233:
1.17 markus 1234: case oPort:
1.300 naddy 1235: arg = strdelim(&s);
1236: if (!arg || *arg == '\0')
1237: fatal("%.200s line %d: Missing argument.",
1238: filename, linenum);
1239: value = a2port(arg);
1240: if (value <= 0)
1241: fatal("%.200s line %d: Bad port '%s'.",
1242: filename, linenum, arg);
1243: if (*activep && options->port == -1)
1244: options->port = value;
1245: break;
1246:
1247: case oConnectionAttempts:
1248: intptr = &options->connection_attempts;
1.17 markus 1249: parse_int:
1.42 provos 1250: arg = strdelim(&s);
1.281 dtucker 1251: if ((errstr = atoi_err(arg, &value)) != NULL)
1252: fatal("%s line %d: integer value %s.",
1253: filename, linenum, errstr);
1.17 markus 1254: if (*activep && *intptr == -1)
1255: *intptr = value;
1256: break;
1257:
1.25 markus 1258: case oCiphers:
1.42 provos 1259: arg = strdelim(&s);
1.40 ho 1260: if (!arg || *arg == '\0')
1.32 markus 1261: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1262: if (*arg != '-' &&
1263: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.31 markus 1264: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1265: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1266: if (*activep && options->ciphers == NULL)
1.38 provos 1267: options->ciphers = xstrdup(arg);
1.25 markus 1268: break;
1269:
1.62 markus 1270: case oMacs:
1271: arg = strdelim(&s);
1272: if (!arg || *arg == '\0')
1273: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1274: if (*arg != '-' &&
1275: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.305 dtucker 1276: fatal("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1277: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1278: if (*activep && options->macs == NULL)
1279: options->macs = xstrdup(arg);
1280: break;
1281:
1.189 djm 1282: case oKexAlgorithms:
1283: arg = strdelim(&s);
1284: if (!arg || *arg == '\0')
1285: fatal("%.200s line %d: Missing argument.",
1286: filename, linenum);
1.268 djm 1287: if (*arg != '-' &&
1.309 naddy 1288: !kex_names_valid(*arg == '+' || *arg == '^' ?
1289: arg + 1 : arg))
1.189 djm 1290: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1291: filename, linenum, arg ? arg : "<NONE>");
1292: if (*activep && options->kex_algorithms == NULL)
1293: options->kex_algorithms = xstrdup(arg);
1294: break;
1295:
1.76 markus 1296: case oHostKeyAlgorithms:
1.238 markus 1297: charptr = &options->hostkeyalgorithms;
1298: parse_keytypes:
1.76 markus 1299: arg = strdelim(&s);
1300: if (!arg || *arg == '\0')
1.238 markus 1301: fatal("%.200s line %d: Missing argument.",
1302: filename, linenum);
1.268 djm 1303: if (*arg != '-' &&
1.309 naddy 1304: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1305: arg + 1 : arg, 1))
1.238 markus 1306: fatal("%s line %d: Bad key types '%s'.",
1307: filename, linenum, arg ? arg : "<NONE>");
1308: if (*activep && *charptr == NULL)
1309: *charptr = xstrdup(arg);
1.76 markus 1310: break;
1311:
1.298 djm 1312: case oCASignatureAlgorithms:
1313: charptr = &options->ca_sign_algorithms;
1314: goto parse_keytypes;
1315:
1.17 markus 1316: case oLogLevel:
1.164 dtucker 1317: log_level_ptr = &options->log_level;
1.42 provos 1318: arg = strdelim(&s);
1.38 provos 1319: value = log_level_number(arg);
1.95 markus 1320: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1321: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1322: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1323: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1324: *log_level_ptr = (LogLevel) value;
1.17 markus 1325: break;
1326:
1.271 dtucker 1327: case oLogFacility:
1328: log_facility_ptr = &options->log_facility;
1329: arg = strdelim(&s);
1330: value = log_facility_number(arg);
1331: if (value == SYSLOG_FACILITY_NOT_SET)
1332: fatal("%.200s line %d: unsupported log facility '%s'",
1333: filename, linenum, arg ? arg : "<NONE>");
1334: if (*log_facility_ptr == -1)
1335: *log_facility_ptr = (SyslogFacility) value;
1336: break;
1337:
1.88 stevesk 1338: case oLocalForward:
1.17 markus 1339: case oRemoteForward:
1.168 stevesk 1340: case oDynamicForward:
1.42 provos 1341: arg = strdelim(&s);
1.135 djm 1342: if (arg == NULL || *arg == '\0')
1.88 stevesk 1343: fatal("%.200s line %d: Missing port argument.",
1344: filename, linenum);
1.135 djm 1345:
1.279 markus 1346: remotefwd = (opcode == oRemoteForward);
1347: dynamicfwd = (opcode == oDynamicForward);
1348:
1349: if (!dynamicfwd) {
1.168 stevesk 1350: arg2 = strdelim(&s);
1.279 markus 1351: if (arg2 == NULL || *arg2 == '\0') {
1352: if (remotefwd)
1353: dynamicfwd = 1;
1354: else
1355: fatal("%.200s line %d: Missing target "
1356: "argument.", filename, linenum);
1357: } else {
1358: /* construct a string for parse_forward */
1359: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1360: arg2);
1361: }
1362: }
1363: if (dynamicfwd)
1.168 stevesk 1364: strlcpy(fwdarg, arg, sizeof(fwdarg));
1365:
1.279 markus 1366: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0)
1.88 stevesk 1367: fatal("%.200s line %d: Bad forwarding specification.",
1368: filename, linenum);
1.135 djm 1369:
1.88 stevesk 1370: if (*activep) {
1.279 markus 1371: if (remotefwd) {
1372: add_remote_forward(options, &fwd);
1373: } else {
1.135 djm 1374: add_local_forward(options, &fwd);
1.279 markus 1375: }
1.88 stevesk 1376: }
1.17 markus 1377: break;
1.71 markus 1378:
1.90 stevesk 1379: case oClearAllForwardings:
1380: intptr = &options->clear_forwardings;
1381: goto parse_flag;
1382:
1.17 markus 1383: case oHost:
1.206 djm 1384: if (cmdline)
1385: fatal("Host directive not supported as a command-line "
1386: "option");
1.17 markus 1387: *activep = 0;
1.191 djm 1388: arg2 = NULL;
1389: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.252 djm 1390: if ((flags & SSHCONF_NEVERMATCH) != 0)
1391: break;
1.191 djm 1392: negated = *arg == '!';
1393: if (negated)
1394: arg++;
1.38 provos 1395: if (match_pattern(host, arg)) {
1.191 djm 1396: if (negated) {
1397: debug("%.200s line %d: Skipping Host "
1398: "block because of negated match "
1399: "for %.100s", filename, linenum,
1400: arg);
1401: *activep = 0;
1402: break;
1403: }
1404: if (!*activep)
1405: arg2 = arg; /* logged below */
1.17 markus 1406: *activep = 1;
1407: }
1.191 djm 1408: }
1409: if (*activep)
1410: debug("%.200s line %d: Applying options for %.100s",
1411: filename, linenum, arg2);
1.42 provos 1412: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1413: return 0;
1414:
1.206 djm 1415: case oMatch:
1416: if (cmdline)
1417: fatal("Host directive not supported as a command-line "
1418: "option");
1.221 djm 1419: value = match_cfg_line(options, &s, pw, host, original_host,
1.302 djm 1420: flags & SSHCONF_FINAL, want_final_pass,
1421: filename, linenum);
1.206 djm 1422: if (value < 0)
1423: fatal("%.200s line %d: Bad Match condition", filename,
1424: linenum);
1.252 djm 1425: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.206 djm 1426: break;
1427:
1.17 markus 1428: case oEscapeChar:
1429: intptr = &options->escape_char;
1.42 provos 1430: arg = strdelim(&s);
1.40 ho 1431: if (!arg || *arg == '\0')
1.17 markus 1432: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1433: if (strcmp(arg, "none") == 0)
1434: value = SSH_ESCAPECHAR_NONE;
1435: else if (arg[1] == '\0')
1436: value = (u_char) arg[0];
1437: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1438: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1439: value = (u_char) arg[1] & 31;
1.17 markus 1440: else {
1441: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1442: filename, linenum);
1.17 markus 1443: /* NOTREACHED */
1444: value = 0; /* Avoid compiler warning. */
1445: }
1446: if (*activep && *intptr == -1)
1447: *intptr = value;
1.112 djm 1448: break;
1449:
1450: case oAddressFamily:
1.114 djm 1451: intptr = &options->address_family;
1.207 djm 1452: multistate_ptr = multistate_addressfamily;
1453: goto parse_multistate;
1.17 markus 1454:
1.101 markus 1455: case oEnableSSHKeysign:
1456: intptr = &options->enable_ssh_keysign;
1457: goto parse_flag;
1458:
1.128 markus 1459: case oIdentitiesOnly:
1460: intptr = &options->identities_only;
1461: goto parse_flag;
1462:
1.127 markus 1463: case oServerAliveInterval:
1464: intptr = &options->server_alive_interval;
1465: goto parse_time;
1466:
1467: case oServerAliveCountMax:
1468: intptr = &options->server_alive_count_max;
1469: goto parse_int;
1470:
1.130 djm 1471: case oSendEnv:
1472: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1473: if (strchr(arg, '=') != NULL)
1474: fatal("%s line %d: Invalid environment name.",
1475: filename, linenum);
1.137 djm 1476: if (!*activep)
1477: continue;
1.286 djm 1478: if (*arg == '-') {
1479: /* Removing an env var */
1480: rm_env(options, arg, filename, linenum);
1481: continue;
1482: } else {
1483: /* Adding an env var */
1.290 djm 1484: if (options->num_send_env >= INT_MAX)
1.286 djm 1485: fatal("%s line %d: too many send env.",
1486: filename, linenum);
1.290 djm 1487: options->send_env = xrecallocarray(
1488: options->send_env, options->num_send_env,
1.291 djm 1489: options->num_send_env + 1,
1.290 djm 1490: sizeof(*options->send_env));
1.286 djm 1491: options->send_env[options->num_send_env++] =
1492: xstrdup(arg);
1493: }
1.130 djm 1494: }
1495: break;
1496:
1.290 djm 1497: case oSetEnv:
1498: value = options->num_setenv;
1499: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1500: if (strchr(arg, '=') == NULL)
1501: fatal("%s line %d: Invalid SetEnv.",
1502: filename, linenum);
1503: if (!*activep || value != 0)
1504: continue;
1505: /* Adding a setenv var */
1506: if (options->num_setenv >= INT_MAX)
1507: fatal("%s line %d: too many SetEnv.",
1508: filename, linenum);
1509: options->setenv = xrecallocarray(
1510: options->setenv, options->num_setenv,
1511: options->num_setenv + 1, sizeof(*options->setenv));
1512: options->setenv[options->num_setenv++] = xstrdup(arg);
1513: }
1514: break;
1515:
1.132 djm 1516: case oControlPath:
1517: charptr = &options->control_path;
1518: goto parse_string;
1519:
1520: case oControlMaster:
1521: intptr = &options->control_master;
1.207 djm 1522: multistate_ptr = multistate_controlmaster;
1523: goto parse_multistate;
1.132 djm 1524:
1.187 djm 1525: case oControlPersist:
1526: /* no/false/yes/true, or a time spec */
1527: intptr = &options->control_persist;
1528: arg = strdelim(&s);
1529: if (!arg || *arg == '\0')
1530: fatal("%.200s line %d: Missing ControlPersist"
1531: " argument.", filename, linenum);
1532: value = 0;
1533: value2 = 0; /* timeout */
1534: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1535: value = 0;
1536: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1537: value = 1;
1538: else if ((value2 = convtime(arg)) >= 0)
1539: value = 1;
1540: else
1541: fatal("%.200s line %d: Bad ControlPersist argument.",
1542: filename, linenum);
1543: if (*activep && *intptr == -1) {
1544: *intptr = value;
1545: options->control_persist_timeout = value2;
1546: }
1547: break;
1548:
1.136 djm 1549: case oHashKnownHosts:
1550: intptr = &options->hash_known_hosts;
1551: goto parse_flag;
1552:
1.144 reyk 1553: case oTunnel:
1554: intptr = &options->tun_open;
1.207 djm 1555: multistate_ptr = multistate_tunnel;
1556: goto parse_multistate;
1.144 reyk 1557:
1558: case oTunnelDevice:
1559: arg = strdelim(&s);
1560: if (!arg || *arg == '\0')
1561: fatal("%.200s line %d: Missing argument.", filename, linenum);
1562: value = a2tun(arg, &value2);
1.145 reyk 1563: if (value == SSH_TUNID_ERR)
1.144 reyk 1564: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1565: if (*activep) {
1566: options->tun_local = value;
1567: options->tun_remote = value2;
1568: }
1569: break;
1570:
1571: case oLocalCommand:
1572: charptr = &options->local_command;
1573: goto parse_command;
1574:
1575: case oPermitLocalCommand:
1576: intptr = &options->permit_local_command;
1577: goto parse_flag;
1578:
1.277 bluhm 1579: case oRemoteCommand:
1580: charptr = &options->remote_command;
1581: goto parse_command;
1582:
1.167 grunk 1583: case oVisualHostKey:
1584: intptr = &options->visual_host_key;
1585: goto parse_flag;
1586:
1.252 djm 1587: case oInclude:
1588: if (cmdline)
1589: fatal("Include directive not supported as a "
1590: "command-line option");
1591: value = 0;
1592: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1593: /*
1594: * Ensure all paths are anchored. User configuration
1595: * files may begin with '~/' but system configurations
1596: * must not. If the path is relative, then treat it
1597: * as living in ~/.ssh for user configurations or
1598: * /etc/ssh for system ones.
1599: */
1600: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0)
1601: fatal("%.200s line %d: bad include path %s.",
1602: filename, linenum, arg);
1.301 djm 1603: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1604: xasprintf(&arg2, "%s/%s",
1605: (flags & SSHCONF_USERCONF) ?
1606: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1607: } else
1608: arg2 = xstrdup(arg);
1609: memset(&gl, 0, sizeof(gl));
1610: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1611: if (r == GLOB_NOMATCH) {
1612: debug("%.200s line %d: include %s matched no "
1613: "files",filename, linenum, arg2);
1.269 dtucker 1614: free(arg2);
1.252 djm 1615: continue;
1.313 deraadt 1616: } else if (r != 0)
1.252 djm 1617: fatal("%.200s line %d: glob failed for %s.",
1618: filename, linenum, arg2);
1619: free(arg2);
1620: oactive = *activep;
1.313 deraadt 1621: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1622: debug3("%.200s line %d: Including file %s "
1623: "depth %d%s", filename, linenum,
1624: gl.gl_pathv[i], depth,
1625: oactive ? "" : " (parse only)");
1626: r = read_config_file_depth(gl.gl_pathv[i],
1627: pw, host, original_host, options,
1628: flags | SSHCONF_CHECKPERM |
1629: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1630: activep, want_final_pass, depth + 1);
1.264 djm 1631: if (r != 1 && errno != ENOENT) {
1.263 djm 1632: fatal("Can't open user config file "
1633: "%.100s: %.100s", gl.gl_pathv[i],
1634: strerror(errno));
1635: }
1.252 djm 1636: /*
1637: * don't let Match in includes clobber the
1638: * containing file's Match state.
1639: */
1640: *activep = oactive;
1641: if (r != 1)
1642: value = -1;
1643: }
1644: globfree(&gl);
1645: }
1646: if (value != 0)
1647: return value;
1648: break;
1649:
1.190 djm 1650: case oIPQoS:
1651: arg = strdelim(&s);
1652: if ((value = parse_ipqos(arg)) == -1)
1653: fatal("%s line %d: Bad IPQoS value: %s",
1654: filename, linenum, arg);
1655: arg = strdelim(&s);
1656: if (arg == NULL)
1657: value2 = value;
1658: else if ((value2 = parse_ipqos(arg)) == -1)
1659: fatal("%s line %d: Bad IPQoS value: %s",
1660: filename, linenum, arg);
1661: if (*activep) {
1662: options->ip_qos_interactive = value;
1663: options->ip_qos_bulk = value2;
1664: }
1665: break;
1666:
1.192 djm 1667: case oRequestTTY:
1668: intptr = &options->request_tty;
1.207 djm 1669: multistate_ptr = multistate_requesttty;
1670: goto parse_multistate;
1.192 djm 1671:
1.199 djm 1672: case oIgnoreUnknown:
1673: charptr = &options->ignored_unknown;
1674: goto parse_string;
1675:
1.205 djm 1676: case oProxyUseFdpass:
1677: intptr = &options->proxy_use_fdpass;
1678: goto parse_flag;
1679:
1.208 djm 1680: case oCanonicalDomains:
1681: value = options->num_canonical_domains != 0;
1682: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.280 millert 1683: if (!valid_domain(arg, 1, &errstr)) {
1684: fatal("%s line %d: %s", filename, linenum,
1685: errstr);
1686: }
1.208 djm 1687: if (!*activep || value)
1688: continue;
1689: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1690: fatal("%s line %d: too many hostname suffixes.",
1691: filename, linenum);
1692: options->canonical_domains[
1693: options->num_canonical_domains++] = xstrdup(arg);
1694: }
1695: break;
1696:
1.209 djm 1697: case oCanonicalizePermittedCNAMEs:
1.208 djm 1698: value = options->num_permitted_cnames != 0;
1699: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1700: /* Either '*' for everything or 'list:list' */
1701: if (strcmp(arg, "*") == 0)
1702: arg2 = arg;
1703: else {
1704: lowercase(arg);
1705: if ((arg2 = strchr(arg, ':')) == NULL ||
1706: arg2[1] == '\0') {
1707: fatal("%s line %d: "
1708: "Invalid permitted CNAME \"%s\"",
1709: filename, linenum, arg);
1710: }
1711: *arg2 = '\0';
1712: arg2++;
1713: }
1714: if (!*activep || value)
1715: continue;
1716: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1717: fatal("%s line %d: too many permitted CNAMEs.",
1718: filename, linenum);
1719: cname = options->permitted_cnames +
1720: options->num_permitted_cnames++;
1721: cname->source_list = xstrdup(arg);
1722: cname->target_list = xstrdup(arg2);
1723: }
1724: break;
1725:
1.209 djm 1726: case oCanonicalizeHostname:
1727: intptr = &options->canonicalize_hostname;
1728: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1729: goto parse_multistate;
1730:
1.209 djm 1731: case oCanonicalizeMaxDots:
1732: intptr = &options->canonicalize_max_dots;
1.208 djm 1733: goto parse_int;
1734:
1.209 djm 1735: case oCanonicalizeFallbackLocal:
1736: intptr = &options->canonicalize_fallback_local;
1.208 djm 1737: goto parse_flag;
1738:
1.220 millert 1739: case oStreamLocalBindMask:
1740: arg = strdelim(&s);
1741: if (!arg || *arg == '\0')
1742: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1743: /* Parse mode in octal format */
1744: value = strtol(arg, &endofnumber, 8);
1745: if (arg == endofnumber || value < 0 || value > 0777)
1746: fatal("%.200s line %d: Bad mask.", filename, linenum);
1747: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1748: break;
1749:
1750: case oStreamLocalBindUnlink:
1751: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1752: goto parse_flag;
1753:
1.223 djm 1754: case oRevokedHostKeys:
1755: charptr = &options->revoked_host_keys;
1756: goto parse_string;
1757:
1.224 djm 1758: case oFingerprintHash:
1.225 djm 1759: intptr = &options->fingerprint_hash;
1.224 djm 1760: arg = strdelim(&s);
1761: if (!arg || *arg == '\0')
1762: fatal("%.200s line %d: Missing argument.",
1763: filename, linenum);
1764: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1765: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1766: filename, linenum, arg);
1.225 djm 1767: if (*activep && *intptr == -1)
1768: *intptr = value;
1.224 djm 1769: break;
1770:
1.229 djm 1771: case oUpdateHostkeys:
1772: intptr = &options->update_hostkeys;
1.232 djm 1773: multistate_ptr = multistate_yesnoask;
1774: goto parse_multistate;
1.229 djm 1775:
1.230 djm 1776: case oHostbasedKeyTypes:
1777: charptr = &options->hostbased_key_types;
1.238 markus 1778: goto parse_keytypes;
1779:
1780: case oPubkeyAcceptedKeyTypes:
1781: charptr = &options->pubkey_key_types;
1782: goto parse_keytypes;
1.230 djm 1783:
1.246 jcs 1784: case oAddKeysToAgent:
1.334 djm 1785: arg = strdelim(&s);
1786: arg2 = strdelim(&s);
1787: value = parse_multistate_value(arg, filename, linenum,
1788: multistate_yesnoaskconfirm);
1789: value2 = 0; /* unlimited lifespan by default */
1790: if (value == 3 && arg2 != NULL) {
1791: /* allow "AddKeysToAgent confirm 5m" */
1792: if ((value2 = convtime(arg2)) == -1 || value2 > INT_MAX)
1793: fatal("%s line %d: invalid time value.",
1794: filename, linenum);
1795: } else if (value == -1 && arg2 == NULL) {
1796: if ((value2 = convtime(arg)) == -1 || value2 > INT_MAX)
1797: fatal("%s line %d: unsupported option",
1798: filename, linenum);
1799: value = 1; /* yes */
1800: } else if (value == -1 || arg2 != NULL) {
1801: fatal("%s line %d: unsupported option",
1802: filename, linenum);
1803: }
1804: if (*activep && options->add_keys_to_agent == -1) {
1805: options->add_keys_to_agent = value;
1806: options->add_keys_to_agent_lifespan = value2;
1807: }
1808: break;
1.246 jcs 1809:
1.253 markus 1810: case oIdentityAgent:
1811: charptr = &options->identity_agent;
1.299 djm 1812: arg = strdelim(&s);
1813: if (!arg || *arg == '\0')
1814: fatal("%.200s line %d: Missing argument.",
1815: filename, linenum);
1.319 djm 1816: parse_agent_path:
1.299 djm 1817: /* Extra validation if the string represents an env var. */
1.331 dtucker 1818: if ((arg2 = dollar_expand(&r, arg)) == NULL || r)
1819: fatal("%.200s line %d: Invalid environment expansion "
1820: "%s.", filename, linenum, arg);
1821: free(arg2);
1822: /* check for legacy environment format */
1823: if (arg[0] == '$' && arg[1] != '{' && !valid_env_name(arg + 1)) {
1.299 djm 1824: fatal("%.200s line %d: Invalid environment name %s.",
1825: filename, linenum, arg);
1826: }
1827: if (*activep && *charptr == NULL)
1828: *charptr = xstrdup(arg);
1829: break;
1.253 markus 1830:
1.96 markus 1831: case oDeprecated:
1.98 markus 1832: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1833: filename, linenum, keyword);
1.98 markus 1834: return 0;
1.96 markus 1835:
1.110 jakob 1836: case oUnsupported:
1837: error("%s line %d: Unsupported option \"%s\"",
1838: filename, linenum, keyword);
1839: return 0;
1840:
1.17 markus 1841: default:
1.221 djm 1842: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1843: }
1844:
1845: /* Check that there is no garbage at end of line. */
1.57 djm 1846: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1847: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1848: filename, linenum, arg);
1.39 ho 1849: }
1.17 markus 1850: return 0;
1.1 deraadt 1851: }
1852:
1.19 markus 1853: /*
1854: * Reads the config file and modifies the options accordingly. Options
1855: * should already be initialized before this call. This never returns if
1.89 stevesk 1856: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1857: */
1.89 stevesk 1858: int
1.206 djm 1859: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 1860: const char *original_host, Options *options, int flags,
1861: int *want_final_pass)
1.1 deraadt 1862: {
1.252 djm 1863: int active = 1;
1864:
1865: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 1866: options, flags, &active, want_final_pass, 0);
1.252 djm 1867: }
1868:
1869: #define READCONF_MAX_DEPTH 16
1870: static int
1871: read_config_file_depth(const char *filename, struct passwd *pw,
1872: const char *host, const char *original_host, Options *options,
1.302 djm 1873: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 1874: {
1.17 markus 1875: FILE *f;
1.289 markus 1876: char *line = NULL;
1877: size_t linesize = 0;
1.252 djm 1878: int linenum;
1.17 markus 1879: int bad_options = 0;
1880:
1.252 djm 1881: if (depth < 0 || depth > READCONF_MAX_DEPTH)
1882: fatal("Too many recursive configuration includes");
1883:
1.129 djm 1884: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1885: return 0;
1.129 djm 1886:
1.196 dtucker 1887: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1888: struct stat sb;
1.134 deraadt 1889:
1.131 dtucker 1890: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1891: fatal("fstat %s: %s", filename, strerror(errno));
1892: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1893: (sb.st_mode & 022) != 0))
1.129 djm 1894: fatal("Bad owner or permissions on %s", filename);
1895: }
1.17 markus 1896:
1897: debug("Reading configuration data %.200s", filename);
1898:
1.19 markus 1899: /*
1900: * Mark that we are now processing the options. This flag is turned
1901: * on/off by Host specifications.
1902: */
1.17 markus 1903: linenum = 0;
1.289 markus 1904: while (getline(&line, &linesize, f) != -1) {
1.17 markus 1905: /* Update line number counter. */
1906: linenum++;
1.252 djm 1907: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 1908: line, filename, linenum, activep, flags, want_final_pass,
1909: depth) != 0)
1.17 markus 1910: bad_options++;
1911: }
1.289 markus 1912: free(line);
1.17 markus 1913: fclose(f);
1914: if (bad_options > 0)
1.64 millert 1915: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1916: filename, bad_options);
1.89 stevesk 1917: return 1;
1.1 deraadt 1918: }
1919:
1.218 djm 1920: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1921: int
1922: option_clear_or_none(const char *o)
1923: {
1924: return o == NULL || strcasecmp(o, "none") == 0;
1925: }
1926:
1.19 markus 1927: /*
1928: * Initializes options to special values that indicate that they have not yet
1929: * been set. Read_config_file will only set options with this value. Options
1930: * are processed in the following order: command line, user config file,
1931: * system config file. Last, fill_default_options is called.
1932: */
1.1 deraadt 1933:
1.26 markus 1934: void
1.17 markus 1935: initialize_options(Options * options)
1.1 deraadt 1936: {
1.17 markus 1937: memset(options, 'X', sizeof(*options));
1938: options->forward_agent = -1;
1.319 djm 1939: options->forward_agent_sock_path = NULL;
1.17 markus 1940: options->forward_x11 = -1;
1.123 markus 1941: options->forward_x11_trusted = -1;
1.186 djm 1942: options->forward_x11_timeout = -1;
1.255 dtucker 1943: options->stdio_forward_host = NULL;
1944: options->stdio_forward_port = 0;
1.256 dtucker 1945: options->clear_forwardings = -1;
1.153 markus 1946: options->exit_on_forward_failure = -1;
1.34 markus 1947: options->xauth_location = NULL;
1.220 millert 1948: options->fwd_opts.gateway_ports = -1;
1949: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1950: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 1951: options->pubkey_authentication = -1;
1.78 markus 1952: options->challenge_response_authentication = -1;
1.118 markus 1953: options->gss_authentication = -1;
1954: options->gss_deleg_creds = -1;
1.17 markus 1955: options->password_authentication = -1;
1.48 markus 1956: options->kbd_interactive_authentication = -1;
1957: options->kbd_interactive_devices = NULL;
1.72 markus 1958: options->hostbased_authentication = -1;
1.17 markus 1959: options->batch_mode = -1;
1960: options->check_host_ip = -1;
1961: options->strict_host_key_checking = -1;
1962: options->compression = -1;
1.126 markus 1963: options->tcp_keep_alive = -1;
1.17 markus 1964: options->port = -1;
1.114 djm 1965: options->address_family = -1;
1.17 markus 1966: options->connection_attempts = -1;
1.111 djm 1967: options->connection_timeout = -1;
1.17 markus 1968: options->number_of_password_prompts = -1;
1.25 markus 1969: options->ciphers = NULL;
1.62 markus 1970: options->macs = NULL;
1.189 djm 1971: options->kex_algorithms = NULL;
1.76 markus 1972: options->hostkeyalgorithms = NULL;
1.298 djm 1973: options->ca_sign_algorithms = NULL;
1.17 markus 1974: options->num_identity_files = 0;
1.241 djm 1975: options->num_certificate_files = 0;
1.17 markus 1976: options->hostname = NULL;
1.52 markus 1977: options->host_key_alias = NULL;
1.17 markus 1978: options->proxy_command = NULL;
1.257 djm 1979: options->jump_user = NULL;
1980: options->jump_host = NULL;
1981: options->jump_port = -1;
1982: options->jump_extra = NULL;
1.17 markus 1983: options->user = NULL;
1984: options->escape_char = -1;
1.193 djm 1985: options->num_system_hostfiles = 0;
1986: options->num_user_hostfiles = 0;
1.185 djm 1987: options->local_forwards = NULL;
1.17 markus 1988: options->num_local_forwards = 0;
1.185 djm 1989: options->remote_forwards = NULL;
1.17 markus 1990: options->num_remote_forwards = 0;
1.271 dtucker 1991: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 1992: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1993: options->preferred_authentications = NULL;
1.77 markus 1994: options->bind_address = NULL;
1.282 djm 1995: options->bind_interface = NULL;
1.183 markus 1996: options->pkcs11_provider = NULL;
1.310 djm 1997: options->sk_provider = NULL;
1.101 markus 1998: options->enable_ssh_keysign = - 1;
1.91 markus 1999: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2000: options->identities_only = - 1;
1.105 markus 2001: options->rekey_limit = - 1;
1.198 dtucker 2002: options->rekey_interval = -1;
1.107 jakob 2003: options->verify_host_key_dns = -1;
1.127 markus 2004: options->server_alive_interval = -1;
2005: options->server_alive_count_max = -1;
1.290 djm 2006: options->send_env = NULL;
1.130 djm 2007: options->num_send_env = 0;
1.290 djm 2008: options->setenv = NULL;
2009: options->num_setenv = 0;
1.132 djm 2010: options->control_path = NULL;
2011: options->control_master = -1;
1.187 djm 2012: options->control_persist = -1;
2013: options->control_persist_timeout = 0;
1.136 djm 2014: options->hash_known_hosts = -1;
1.144 reyk 2015: options->tun_open = -1;
2016: options->tun_local = -1;
2017: options->tun_remote = -1;
2018: options->local_command = NULL;
2019: options->permit_local_command = -1;
1.277 bluhm 2020: options->remote_command = NULL;
1.246 jcs 2021: options->add_keys_to_agent = -1;
1.334 djm 2022: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2023: options->identity_agent = NULL;
1.167 grunk 2024: options->visual_host_key = -1;
1.190 djm 2025: options->ip_qos_interactive = -1;
2026: options->ip_qos_bulk = -1;
1.192 djm 2027: options->request_tty = -1;
1.205 djm 2028: options->proxy_use_fdpass = -1;
1.199 djm 2029: options->ignored_unknown = NULL;
1.208 djm 2030: options->num_canonical_domains = 0;
2031: options->num_permitted_cnames = 0;
1.209 djm 2032: options->canonicalize_max_dots = -1;
2033: options->canonicalize_fallback_local = -1;
2034: options->canonicalize_hostname = -1;
1.223 djm 2035: options->revoked_host_keys = NULL;
1.224 djm 2036: options->fingerprint_hash = -1;
1.229 djm 2037: options->update_hostkeys = -1;
1.230 djm 2038: options->hostbased_key_types = NULL;
1.238 markus 2039: options->pubkey_key_types = NULL;
1.1 deraadt 2040: }
2041:
1.19 markus 2042: /*
1.218 djm 2043: * A petite version of fill_default_options() that just fills the options
2044: * needed for hostname canonicalization to proceed.
2045: */
2046: void
2047: fill_default_options_for_canonicalization(Options *options)
2048: {
2049: if (options->canonicalize_max_dots == -1)
2050: options->canonicalize_max_dots = 1;
2051: if (options->canonicalize_fallback_local == -1)
2052: options->canonicalize_fallback_local = 1;
2053: if (options->canonicalize_hostname == -1)
2054: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2055: }
2056:
2057: /*
1.19 markus 2058: * Called after processing other sources of option data, this fills those
2059: * options for which no value has been specified with their default values.
2060: */
1.26 markus 2061: void
1.17 markus 2062: fill_default_options(Options * options)
1.1 deraadt 2063: {
1.298 djm 2064: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2065: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.297 djm 2066: int r;
1.292 djm 2067:
1.17 markus 2068: if (options->forward_agent == -1)
1.33 markus 2069: options->forward_agent = 0;
1.17 markus 2070: if (options->forward_x11 == -1)
1.23 markus 2071: options->forward_x11 = 0;
1.123 markus 2072: if (options->forward_x11_trusted == -1)
2073: options->forward_x11_trusted = 0;
1.186 djm 2074: if (options->forward_x11_timeout == -1)
2075: options->forward_x11_timeout = 1200;
1.256 dtucker 2076: /*
2077: * stdio forwarding (-W) changes the default for these but we defer
2078: * setting the values so they can be overridden.
2079: */
1.153 markus 2080: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2081: options->exit_on_forward_failure =
2082: options->stdio_forward_host != NULL ? 1 : 0;
2083: if (options->clear_forwardings == -1)
2084: options->clear_forwardings =
2085: options->stdio_forward_host != NULL ? 1 : 0;
2086: if (options->clear_forwardings == 1)
2087: clear_forwardings(options);
2088:
1.34 markus 2089: if (options->xauth_location == NULL)
1.80 markus 2090: options->xauth_location = _PATH_XAUTH;
1.220 millert 2091: if (options->fwd_opts.gateway_ports == -1)
2092: options->fwd_opts.gateway_ports = 0;
2093: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2094: options->fwd_opts.streamlocal_bind_mask = 0177;
2095: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2096: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2097: if (options->pubkey_authentication == -1)
2098: options->pubkey_authentication = 1;
1.78 markus 2099: if (options->challenge_response_authentication == -1)
1.83 markus 2100: options->challenge_response_authentication = 1;
1.118 markus 2101: if (options->gss_authentication == -1)
1.122 markus 2102: options->gss_authentication = 0;
1.118 markus 2103: if (options->gss_deleg_creds == -1)
2104: options->gss_deleg_creds = 0;
1.17 markus 2105: if (options->password_authentication == -1)
2106: options->password_authentication = 1;
1.48 markus 2107: if (options->kbd_interactive_authentication == -1)
1.59 markus 2108: options->kbd_interactive_authentication = 1;
1.72 markus 2109: if (options->hostbased_authentication == -1)
2110: options->hostbased_authentication = 0;
1.17 markus 2111: if (options->batch_mode == -1)
2112: options->batch_mode = 0;
2113: if (options->check_host_ip == -1)
2114: options->check_host_ip = 1;
2115: if (options->strict_host_key_checking == -1)
1.278 djm 2116: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2117: if (options->compression == -1)
2118: options->compression = 0;
1.126 markus 2119: if (options->tcp_keep_alive == -1)
2120: options->tcp_keep_alive = 1;
1.17 markus 2121: if (options->port == -1)
2122: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2123: if (options->address_family == -1)
2124: options->address_family = AF_UNSPEC;
1.17 markus 2125: if (options->connection_attempts == -1)
1.84 markus 2126: options->connection_attempts = 1;
1.17 markus 2127: if (options->number_of_password_prompts == -1)
2128: options->number_of_password_prompts = 3;
1.76 markus 2129: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2130: if (options->add_keys_to_agent == -1) {
1.246 jcs 2131: options->add_keys_to_agent = 0;
1.334 djm 2132: options->add_keys_to_agent_lifespan = 0;
2133: }
1.17 markus 2134: if (options->num_identity_files == 0) {
1.273 djm 2135: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2136: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2137: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2138: add_identity_file(options, "~/",
1.310 djm 2139: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2140: add_identity_file(options, "~/",
1.273 djm 2141: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2142: add_identity_file(options, "~/",
2143: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2144: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2145: }
1.17 markus 2146: if (options->escape_char == -1)
2147: options->escape_char = '~';
1.193 djm 2148: if (options->num_system_hostfiles == 0) {
2149: options->system_hostfiles[options->num_system_hostfiles++] =
2150: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2151: options->system_hostfiles[options->num_system_hostfiles++] =
2152: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2153: }
1.336 djm 2154: if (options->update_hostkeys == -1) {
2155: if (options->num_user_hostfiles == 0 ||
2156: (options->num_user_hostfiles == 1 && strcmp(options->
2157: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0))
2158: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2159: else
1.325 djm 2160: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2161: }
1.193 djm 2162: if (options->num_user_hostfiles == 0) {
2163: options->user_hostfiles[options->num_user_hostfiles++] =
2164: xstrdup(_PATH_SSH_USER_HOSTFILE);
2165: options->user_hostfiles[options->num_user_hostfiles++] =
2166: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2167: }
1.95 markus 2168: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2169: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2170: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2171: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2172: if (options->no_host_authentication_for_localhost == - 1)
2173: options->no_host_authentication_for_localhost = 0;
1.128 markus 2174: if (options->identities_only == -1)
2175: options->identities_only = 0;
1.101 markus 2176: if (options->enable_ssh_keysign == -1)
2177: options->enable_ssh_keysign = 0;
1.105 markus 2178: if (options->rekey_limit == -1)
2179: options->rekey_limit = 0;
1.198 dtucker 2180: if (options->rekey_interval == -1)
2181: options->rekey_interval = 0;
1.107 jakob 2182: if (options->verify_host_key_dns == -1)
2183: options->verify_host_key_dns = 0;
1.127 markus 2184: if (options->server_alive_interval == -1)
2185: options->server_alive_interval = 0;
2186: if (options->server_alive_count_max == -1)
2187: options->server_alive_count_max = 3;
1.132 djm 2188: if (options->control_master == -1)
2189: options->control_master = 0;
1.187 djm 2190: if (options->control_persist == -1) {
2191: options->control_persist = 0;
2192: options->control_persist_timeout = 0;
2193: }
1.136 djm 2194: if (options->hash_known_hosts == -1)
2195: options->hash_known_hosts = 0;
1.144 reyk 2196: if (options->tun_open == -1)
1.145 reyk 2197: options->tun_open = SSH_TUNMODE_NO;
2198: if (options->tun_local == -1)
2199: options->tun_local = SSH_TUNID_ANY;
2200: if (options->tun_remote == -1)
2201: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2202: if (options->permit_local_command == -1)
2203: options->permit_local_command = 0;
1.167 grunk 2204: if (options->visual_host_key == -1)
2205: options->visual_host_key = 0;
1.190 djm 2206: if (options->ip_qos_interactive == -1)
1.284 job 2207: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2208: if (options->ip_qos_bulk == -1)
1.284 job 2209: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2210: if (options->request_tty == -1)
2211: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2212: if (options->proxy_use_fdpass == -1)
2213: options->proxy_use_fdpass = 0;
1.209 djm 2214: if (options->canonicalize_max_dots == -1)
2215: options->canonicalize_max_dots = 1;
2216: if (options->canonicalize_fallback_local == -1)
2217: options->canonicalize_fallback_local = 1;
2218: if (options->canonicalize_hostname == -1)
2219: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2220: if (options->fingerprint_hash == -1)
2221: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2222: if (options->sk_provider == NULL)
1.314 djm 2223: options->sk_provider = xstrdup("internal");
1.292 djm 2224:
2225: /* Expand KEX name lists */
2226: all_cipher = cipher_alg_list(',', 0);
2227: all_mac = mac_alg_list(',');
2228: all_kex = kex_alg_list(',');
2229: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2230: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2231: /* remove unsupported algos from default lists */
1.332 djm 2232: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2233: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2234: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2235: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2236: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2237: #define ASSEMBLE(what, defaults, all) \
2238: do { \
2239: if ((r = kex_assemble_names(&options->what, \
2240: defaults, all)) != 0) \
2241: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
2242: } while (0)
1.320 dtucker 2243: ASSEMBLE(ciphers, def_cipher, all_cipher);
2244: ASSEMBLE(macs, def_mac, all_mac);
2245: ASSEMBLE(kex_algorithms, def_kex, all_kex);
2246: ASSEMBLE(hostbased_key_types, def_key, all_key);
2247: ASSEMBLE(pubkey_key_types, def_key, all_key);
2248: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2249: #undef ASSEMBLE
1.292 djm 2250: free(all_cipher);
2251: free(all_mac);
2252: free(all_kex);
2253: free(all_key);
1.298 djm 2254: free(all_sig);
1.320 dtucker 2255: free(def_cipher);
2256: free(def_mac);
2257: free(def_kex);
2258: kex_default_pk_alg_filtered = def_key; /* save for later use */
2259: free(def_sig);
1.224 djm 2260:
1.207 djm 2261: #define CLEAR_ON_NONE(v) \
2262: do { \
1.218 djm 2263: if (option_clear_or_none(v)) { \
1.207 djm 2264: free(v); \
2265: v = NULL; \
2266: } \
2267: } while(0)
2268: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2269: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2270: CLEAR_ON_NONE(options->proxy_command);
2271: CLEAR_ON_NONE(options->control_path);
1.223 djm 2272: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2273: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2274: CLEAR_ON_NONE(options->sk_provider);
1.287 djm 2275: if (options->jump_host != NULL &&
2276: strcmp(options->jump_host, "none") == 0 &&
2277: options->jump_port == 0 && options->jump_user == NULL) {
2278: free(options->jump_host);
2279: options->jump_host = NULL;
2280: }
1.254 markus 2281: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2282: /* options->user will be set in the main program if appropriate */
2283: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2284: /* options->host_key_alias should not be set by default */
1.67 markus 2285: /* options->preferred_authentications will be set in ssh */
1.135 djm 2286: }
2287:
1.220 millert 2288: struct fwdarg {
2289: char *arg;
2290: int ispath;
2291: };
2292:
2293: /*
2294: * parse_fwd_field
2295: * parses the next field in a port forwarding specification.
2296: * sets fwd to the parsed field and advances p past the colon
2297: * or sets it to NULL at end of string.
2298: * returns 0 on success, else non-zero.
2299: */
2300: static int
2301: parse_fwd_field(char **p, struct fwdarg *fwd)
2302: {
2303: char *ep, *cp = *p;
2304: int ispath = 0;
2305:
2306: if (*cp == '\0') {
2307: *p = NULL;
2308: return -1; /* end of string */
2309: }
2310:
2311: /*
2312: * A field escaped with square brackets is used literally.
2313: * XXX - allow ']' to be escaped via backslash?
2314: */
2315: if (*cp == '[') {
2316: /* find matching ']' */
2317: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2318: if (*ep == '/')
2319: ispath = 1;
2320: }
2321: /* no matching ']' or not at end of field. */
2322: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2323: return -1;
2324: /* NUL terminate the field and advance p past the colon */
2325: *ep++ = '\0';
2326: if (*ep != '\0')
2327: *ep++ = '\0';
2328: fwd->arg = cp + 1;
2329: fwd->ispath = ispath;
2330: *p = ep;
2331: return 0;
2332: }
2333:
2334: for (cp = *p; *cp != '\0'; cp++) {
2335: switch (*cp) {
2336: case '\\':
2337: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2338: if (*cp == '\0')
2339: return -1;
1.220 millert 2340: break;
2341: case '/':
2342: ispath = 1;
2343: break;
2344: case ':':
2345: *cp++ = '\0';
2346: goto done;
2347: }
2348: }
2349: done:
2350: fwd->arg = *p;
2351: fwd->ispath = ispath;
2352: *p = cp;
2353: return 0;
2354: }
2355:
1.135 djm 2356: /*
2357: * parse_forward
2358: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2359: * dynamicfwd == 0
1.220 millert 2360: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2361: * listenpath:connectpath
1.168 stevesk 2362: * dynamicfwd == 1
2363: * [listenhost:]listenport
1.135 djm 2364: * returns number of arguments parsed or zero on error
2365: */
2366: int
1.220 millert 2367: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2368: {
1.220 millert 2369: struct fwdarg fwdargs[4];
2370: char *p, *cp;
1.331 dtucker 2371: int i, err;
1.135 djm 2372:
1.220 millert 2373: memset(fwd, 0, sizeof(*fwd));
2374: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2375:
1.331 dtucker 2376: /*
2377: * We expand environment variables before checking if we think they're
2378: * paths so that if ${VAR} expands to a fully qualified path it is
2379: * treated as a path.
2380: */
2381: cp = p = dollar_expand(&err, fwdspec);
2382: if (p == NULL || err)
2383: return 0;
1.135 djm 2384:
2385: /* skip leading spaces */
1.214 deraadt 2386: while (isspace((u_char)*cp))
1.135 djm 2387: cp++;
2388:
1.220 millert 2389: for (i = 0; i < 4; ++i) {
2390: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2391: break;
1.220 millert 2392: }
1.135 djm 2393:
1.170 stevesk 2394: /* Check for trailing garbage */
1.220 millert 2395: if (cp != NULL && *cp != '\0') {
1.135 djm 2396: i = 0; /* failure */
1.220 millert 2397: }
1.135 djm 2398:
2399: switch (i) {
1.168 stevesk 2400: case 1:
1.220 millert 2401: if (fwdargs[0].ispath) {
2402: fwd->listen_path = xstrdup(fwdargs[0].arg);
2403: fwd->listen_port = PORT_STREAMLOCAL;
2404: } else {
2405: fwd->listen_host = NULL;
2406: fwd->listen_port = a2port(fwdargs[0].arg);
2407: }
1.168 stevesk 2408: fwd->connect_host = xstrdup("socks");
2409: break;
2410:
2411: case 2:
1.220 millert 2412: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2413: fwd->listen_path = xstrdup(fwdargs[0].arg);
2414: fwd->listen_port = PORT_STREAMLOCAL;
2415: fwd->connect_path = xstrdup(fwdargs[1].arg);
2416: fwd->connect_port = PORT_STREAMLOCAL;
2417: } else if (fwdargs[1].ispath) {
2418: fwd->listen_host = NULL;
2419: fwd->listen_port = a2port(fwdargs[0].arg);
2420: fwd->connect_path = xstrdup(fwdargs[1].arg);
2421: fwd->connect_port = PORT_STREAMLOCAL;
2422: } else {
2423: fwd->listen_host = xstrdup(fwdargs[0].arg);
2424: fwd->listen_port = a2port(fwdargs[1].arg);
2425: fwd->connect_host = xstrdup("socks");
2426: }
1.168 stevesk 2427: break;
2428:
1.135 djm 2429: case 3:
1.220 millert 2430: if (fwdargs[0].ispath) {
2431: fwd->listen_path = xstrdup(fwdargs[0].arg);
2432: fwd->listen_port = PORT_STREAMLOCAL;
2433: fwd->connect_host = xstrdup(fwdargs[1].arg);
2434: fwd->connect_port = a2port(fwdargs[2].arg);
2435: } else if (fwdargs[2].ispath) {
2436: fwd->listen_host = xstrdup(fwdargs[0].arg);
2437: fwd->listen_port = a2port(fwdargs[1].arg);
2438: fwd->connect_path = xstrdup(fwdargs[2].arg);
2439: fwd->connect_port = PORT_STREAMLOCAL;
2440: } else {
2441: fwd->listen_host = NULL;
2442: fwd->listen_port = a2port(fwdargs[0].arg);
2443: fwd->connect_host = xstrdup(fwdargs[1].arg);
2444: fwd->connect_port = a2port(fwdargs[2].arg);
2445: }
1.135 djm 2446: break;
2447:
2448: case 4:
1.220 millert 2449: fwd->listen_host = xstrdup(fwdargs[0].arg);
2450: fwd->listen_port = a2port(fwdargs[1].arg);
2451: fwd->connect_host = xstrdup(fwdargs[2].arg);
2452: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2453: break;
2454: default:
2455: i = 0; /* failure */
2456: }
2457:
1.202 djm 2458: free(p);
1.135 djm 2459:
1.168 stevesk 2460: if (dynamicfwd) {
2461: if (!(i == 1 || i == 2))
2462: goto fail_free;
2463: } else {
1.220 millert 2464: if (!(i == 3 || i == 4)) {
2465: if (fwd->connect_path == NULL &&
2466: fwd->listen_path == NULL)
2467: goto fail_free;
2468: }
2469: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2470: goto fail_free;
2471: }
2472:
1.220 millert 2473: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2474: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2475: goto fail_free;
2476: if (fwd->connect_host != NULL &&
2477: strlen(fwd->connect_host) >= NI_MAXHOST)
2478: goto fail_free;
1.220 millert 2479: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2480: if (fwd->connect_path != NULL &&
2481: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2482: goto fail_free;
1.176 djm 2483: if (fwd->listen_host != NULL &&
2484: strlen(fwd->listen_host) >= NI_MAXHOST)
2485: goto fail_free;
1.220 millert 2486: if (fwd->listen_path != NULL &&
2487: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2488: goto fail_free;
1.135 djm 2489:
2490: return (i);
2491:
2492: fail_free:
1.202 djm 2493: free(fwd->connect_host);
2494: fwd->connect_host = NULL;
1.220 millert 2495: free(fwd->connect_path);
2496: fwd->connect_path = NULL;
1.202 djm 2497: free(fwd->listen_host);
2498: fwd->listen_host = NULL;
1.220 millert 2499: free(fwd->listen_path);
2500: fwd->listen_path = NULL;
1.135 djm 2501: return (0);
1.221 djm 2502: }
2503:
1.257 djm 2504: int
2505: parse_jump(const char *s, Options *o, int active)
2506: {
2507: char *orig, *sdup, *cp;
2508: char *host = NULL, *user = NULL;
1.258 naddy 2509: int ret = -1, port = -1, first;
1.257 djm 2510:
2511: active &= o->proxy_command == NULL && o->jump_host == NULL;
2512:
2513: orig = sdup = xstrdup(s);
1.258 naddy 2514: first = active;
1.259 djm 2515: do {
1.287 djm 2516: if (strcasecmp(s, "none") == 0)
2517: break;
1.259 djm 2518: if ((cp = strrchr(sdup, ',')) == NULL)
2519: cp = sdup; /* last */
2520: else
2521: *cp++ = '\0';
2522:
1.258 naddy 2523: if (first) {
1.257 djm 2524: /* First argument and configuration is active */
1.280 millert 2525: if (parse_ssh_uri(cp, &user, &host, &port) == -1 ||
2526: parse_user_host_port(cp, &user, &host, &port) != 0)
1.257 djm 2527: goto out;
2528: } else {
2529: /* Subsequent argument or inactive configuration */
1.280 millert 2530: if (parse_ssh_uri(cp, NULL, NULL, NULL) == -1 ||
2531: parse_user_host_port(cp, NULL, NULL, NULL) != 0)
1.257 djm 2532: goto out;
2533: }
1.258 naddy 2534: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2535: } while (cp != sdup);
1.257 djm 2536: /* success */
1.258 naddy 2537: if (active) {
1.287 djm 2538: if (strcasecmp(s, "none") == 0) {
2539: o->jump_host = xstrdup("none");
2540: o->jump_port = 0;
2541: } else {
2542: o->jump_user = user;
2543: o->jump_host = host;
2544: o->jump_port = port;
2545: o->proxy_command = xstrdup("none");
2546: user = host = NULL;
2547: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2548: o->jump_extra = xstrdup(s);
2549: o->jump_extra[cp - s] = '\0';
2550: }
1.259 djm 2551: }
1.258 naddy 2552: }
1.257 djm 2553: ret = 0;
2554: out:
1.258 naddy 2555: free(orig);
1.257 djm 2556: free(user);
2557: free(host);
2558: return ret;
1.280 millert 2559: }
2560:
2561: int
2562: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2563: {
2564: char *path;
2565: int r;
2566:
2567: r = parse_uri("ssh", uri, userp, hostp, portp, &path);
2568: if (r == 0 && path != NULL)
2569: r = -1; /* path not allowed */
2570: return r;
1.257 djm 2571: }
2572:
1.221 djm 2573: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2574: static const char *
2575: fmt_multistate_int(int val, const struct multistate *m)
2576: {
2577: u_int i;
2578:
2579: for (i = 0; m[i].key != NULL; i++) {
2580: if (m[i].value == val)
2581: return m[i].key;
2582: }
2583: return "UNKNOWN";
2584: }
2585:
2586: static const char *
2587: fmt_intarg(OpCodes code, int val)
2588: {
2589: if (val == -1)
2590: return "unset";
2591: switch (code) {
2592: case oAddressFamily:
2593: return fmt_multistate_int(val, multistate_addressfamily);
2594: case oVerifyHostKeyDNS:
1.232 djm 2595: case oUpdateHostkeys:
1.221 djm 2596: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 2597: case oStrictHostKeyChecking:
2598: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 2599: case oControlMaster:
2600: return fmt_multistate_int(val, multistate_controlmaster);
2601: case oTunnel:
2602: return fmt_multistate_int(val, multistate_tunnel);
2603: case oRequestTTY:
2604: return fmt_multistate_int(val, multistate_requesttty);
2605: case oCanonicalizeHostname:
2606: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 2607: case oAddKeysToAgent:
2608: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 2609: case oFingerprintHash:
2610: return ssh_digest_alg_name(val);
1.221 djm 2611: default:
2612: switch (val) {
2613: case 0:
2614: return "no";
2615: case 1:
2616: return "yes";
2617: default:
2618: return "UNKNOWN";
2619: }
2620: }
2621: }
2622:
2623: static const char *
2624: lookup_opcode_name(OpCodes code)
2625: {
2626: u_int i;
2627:
2628: for (i = 0; keywords[i].name != NULL; i++)
2629: if (keywords[i].opcode == code)
2630: return(keywords[i].name);
2631: return "UNKNOWN";
2632: }
2633:
2634: static void
2635: dump_cfg_int(OpCodes code, int val)
2636: {
2637: printf("%s %d\n", lookup_opcode_name(code), val);
2638: }
2639:
2640: static void
2641: dump_cfg_fmtint(OpCodes code, int val)
2642: {
2643: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2644: }
2645:
2646: static void
2647: dump_cfg_string(OpCodes code, const char *val)
2648: {
2649: if (val == NULL)
2650: return;
2651: printf("%s %s\n", lookup_opcode_name(code), val);
2652: }
2653:
2654: static void
2655: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2656: {
2657: u_int i;
2658:
2659: for (i = 0; i < count; i++)
2660: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2661: }
2662:
2663: static void
2664: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2665: {
2666: u_int i;
2667:
2668: printf("%s", lookup_opcode_name(code));
2669: for (i = 0; i < count; i++)
2670: printf(" %s", vals[i]);
2671: printf("\n");
2672: }
2673:
2674: static void
2675: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2676: {
2677: const struct Forward *fwd;
2678: u_int i;
2679:
2680: /* oDynamicForward */
2681: for (i = 0; i < count; i++) {
2682: fwd = &fwds[i];
1.265 djm 2683: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 2684: strcmp(fwd->connect_host, "socks") != 0)
2685: continue;
1.265 djm 2686: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 2687: strcmp(fwd->connect_host, "socks") == 0)
2688: continue;
2689: printf("%s", lookup_opcode_name(code));
2690: if (fwd->listen_port == PORT_STREAMLOCAL)
2691: printf(" %s", fwd->listen_path);
2692: else if (fwd->listen_host == NULL)
2693: printf(" %d", fwd->listen_port);
2694: else {
2695: printf(" [%s]:%d",
2696: fwd->listen_host, fwd->listen_port);
2697: }
2698: if (code != oDynamicForward) {
2699: if (fwd->connect_port == PORT_STREAMLOCAL)
2700: printf(" %s", fwd->connect_path);
2701: else if (fwd->connect_host == NULL)
2702: printf(" %d", fwd->connect_port);
2703: else {
2704: printf(" [%s]:%d",
2705: fwd->connect_host, fwd->connect_port);
2706: }
2707: }
2708: printf("\n");
2709: }
2710: }
2711:
2712: void
2713: dump_client_config(Options *o, const char *host)
2714: {
1.326 djm 2715: int i, r;
2716: char buf[8], *all_key;
2717:
2718: /*
2719: * Expand HostKeyAlgorithms name lists. This isn't handled in
2720: * fill_default_options() like the other algorithm lists because
2721: * the host key algorithms are by default dynamically chosen based
2722: * on the host's keys found in known_hosts.
2723: */
2724: all_key = sshkey_alg_list(0, 0, 1, ',');
2725: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
2726: all_key)) != 0)
2727: fatal("%s: expand HostKeyAlgorithms: %s", __func__, ssh_err(r));
2728: free(all_key);
1.240 djm 2729:
1.221 djm 2730: /* Most interesting options first: user, host, port */
2731: dump_cfg_string(oUser, o->user);
1.306 jmc 2732: dump_cfg_string(oHostname, host);
1.221 djm 2733: dump_cfg_int(oPort, o->port);
2734:
2735: /* Flag options */
2736: dump_cfg_fmtint(oAddressFamily, o->address_family);
2737: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2738: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2739: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2740: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2741: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2742: dump_cfg_fmtint(oCompression, o->compression);
2743: dump_cfg_fmtint(oControlMaster, o->control_master);
2744: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 2745: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 2746: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2747: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2748: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2749: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2750: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2751: #ifdef GSSAPI
2752: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2753: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2754: #endif /* GSSAPI */
2755: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2756: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2757: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2758: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2759: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2760: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2761: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2762: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2763: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2764: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2765: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2766: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2767: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2768: dump_cfg_fmtint(oTunnel, o->tun_open);
2769: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2770: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2771: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2772:
2773: /* Integer options */
2774: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2775: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2776: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2777: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2778: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2779: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2780:
2781: /* String options */
2782: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 2783: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 2784: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 2785: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 2786: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 2787: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2788: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.253 markus 2789: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 2790: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 2791: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 2792: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
2793: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 2794: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 2795: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 2796: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 2797: dump_cfg_string(oMacs, o->macs);
1.266 djm 2798: #ifdef ENABLE_PKCS11
1.221 djm 2799: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 2800: #endif
1.310 djm 2801: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 2802: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.242 djm 2803: dump_cfg_string(oPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.230 djm 2804: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2805: dump_cfg_string(oXAuthLocation, o->xauth_location);
2806:
1.230 djm 2807: /* Forwards */
1.221 djm 2808: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2809: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2810: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2811:
2812: /* String array options */
2813: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2814: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 2815: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 2816: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2817: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2818: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 2819: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.221 djm 2820:
2821: /* Special cases */
1.334 djm 2822:
2823: /* AddKeysToAgent */
2824: if (o->add_keys_to_agent_lifespan <= 0)
2825: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
2826: else {
2827: printf("addkeystoagent%s %d\n",
2828: o->add_keys_to_agent == 3 ? " confirm" : "",
2829: o->add_keys_to_agent_lifespan);
2830: }
1.319 djm 2831:
2832: /* oForwardAgent */
2833: if (o->forward_agent_sock_path == NULL)
2834: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2835: else
2836: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 2837:
2838: /* oConnectTimeout */
2839: if (o->connection_timeout == -1)
2840: printf("connecttimeout none\n");
2841: else
2842: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2843:
2844: /* oTunnelDevice */
2845: printf("tunneldevice");
2846: if (o->tun_local == SSH_TUNID_ANY)
2847: printf(" any");
2848: else
2849: printf(" %d", o->tun_local);
2850: if (o->tun_remote == SSH_TUNID_ANY)
2851: printf(":any");
2852: else
2853: printf(":%d", o->tun_remote);
2854: printf("\n");
2855:
2856: /* oCanonicalizePermittedCNAMEs */
2857: if ( o->num_permitted_cnames > 0) {
2858: printf("canonicalizePermittedcnames");
2859: for (i = 0; i < o->num_permitted_cnames; i++) {
2860: printf(" %s:%s", o->permitted_cnames[i].source_list,
2861: o->permitted_cnames[i].target_list);
2862: }
2863: printf("\n");
2864: }
2865:
2866: /* oControlPersist */
2867: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2868: dump_cfg_fmtint(oControlPersist, o->control_persist);
2869: else
2870: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2871:
2872: /* oEscapeChar */
2873: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2874: printf("escapechar none\n");
2875: else {
1.257 djm 2876: vis(buf, o->escape_char, VIS_WHITE, 0);
2877: printf("escapechar %s\n", buf);
1.221 djm 2878: }
2879:
2880: /* oIPQoS */
2881: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2882: printf("%s\n", iptos2str(o->ip_qos_bulk));
2883:
2884: /* oRekeyLimit */
1.249 dtucker 2885: printf("rekeylimit %llu %d\n",
2886: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 2887:
2888: /* oStreamLocalBindMask */
2889: printf("streamlocalbindmask 0%o\n",
2890: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 2891:
2892: /* oLogFacility */
2893: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 2894:
2895: /* oProxyCommand / oProxyJump */
2896: if (o->jump_host == NULL)
2897: dump_cfg_string(oProxyCommand, o->proxy_command);
2898: else {
2899: /* Check for numeric addresses */
2900: i = strchr(o->jump_host, ':') != NULL ||
2901: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
2902: snprintf(buf, sizeof(buf), "%d", o->jump_port);
2903: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 2904: /* optional additional jump spec */
2905: o->jump_extra == NULL ? "" : o->jump_extra,
2906: o->jump_extra == NULL ? "" : ",",
1.257 djm 2907: /* optional user */
2908: o->jump_user == NULL ? "" : o->jump_user,
2909: o->jump_user == NULL ? "" : "@",
2910: /* opening [ if hostname is numeric */
2911: i ? "[" : "",
2912: /* mandatory hostname */
2913: o->jump_host,
2914: /* closing ] if hostname is numeric */
2915: i ? "]" : "",
2916: /* optional port number */
2917: o->jump_port <= 0 ? "" : ":",
1.259 djm 2918: o->jump_port <= 0 ? "" : buf);
1.257 djm 2919: }
1.1 deraadt 2920: }
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