Annotation of src/usr.bin/ssh/readconf.c, Revision 1.333
1.333 ! dtucker 1: /* $OpenBSD: readconf.c,v 1.332 2020/07/05 23:59:45 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;
498: int devnull, status;
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: /* Need this to redirect subprocess stdin/out */
509: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
510: fatal("open(/dev/null): %s", strerror(errno));
511:
512: debug("Executing command: '%.500s'", cmd);
513:
514: /* Fork and execute the command. */
515: if ((pid = fork()) == 0) {
1.245 djm 516: char *argv[4];
1.206 djm 517:
518: /* Redirect child stdin and stdout. Leave stderr */
519: if (dup2(devnull, STDIN_FILENO) == -1)
520: fatal("dup2: %s", strerror(errno));
521: if (dup2(devnull, STDOUT_FILENO) == -1)
522: fatal("dup2: %s", strerror(errno));
523: if (devnull > STDERR_FILENO)
524: close(devnull);
525: closefrom(STDERR_FILENO + 1);
1.245 djm 526:
527: argv[0] = shell;
528: argv[1] = "-c";
529: argv[2] = xstrdup(cmd);
530: argv[3] = NULL;
1.206 djm 531:
532: execv(argv[0], argv);
533: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
534: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 535: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 536: kill(getpid(), SIGTERM);
537: _exit(1);
538: }
539: /* Parent. */
1.307 deraadt 540: if (pid == -1)
1.206 djm 541: fatal("%s: fork: %.100s", __func__, strerror(errno));
542:
543: close(devnull);
544:
545: while (waitpid(pid, &status, 0) == -1) {
546: if (errno != EINTR && errno != EAGAIN)
547: fatal("%s: waitpid: %s", __func__, strerror(errno));
548: }
549: if (!WIFEXITED(status)) {
550: error("command '%.100s' exited abnormally", cmd);
551: return -1;
1.221 djm 552: }
1.206 djm 553: debug3("command returned status %d", WEXITSTATUS(status));
554: return WEXITSTATUS(status);
555: }
556:
557: /*
558: * Parse and execute a Match directive.
559: */
560: static int
561: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 562: const char *host_arg, const char *original_host, int final_pass,
563: int *want_final_pass, const char *filename, int linenum)
1.206 djm 564: {
1.221 djm 565: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 566: const char *ruser;
1.221 djm 567: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 568: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 569: char uidstr[32];
1.206 djm 570:
571: /*
572: * Configuration is likely to be incomplete at this point so we
573: * must be prepared to use default values.
574: */
575: port = options->port <= 0 ? default_ssh_port() : options->port;
576: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 577: if (final_pass) {
1.250 djm 578: host = xstrdup(options->hostname);
579: } else if (options->hostname != NULL) {
1.212 djm 580: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 581: host = percent_expand(options->hostname,
582: "h", host_arg, (char *)NULL);
1.250 djm 583: } else {
1.211 djm 584: host = xstrdup(host_arg);
1.250 djm 585: }
1.206 djm 586:
1.221 djm 587: debug2("checking match for '%s' host %s originally %s",
588: cp, host, original_host);
589: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
590: criteria = NULL;
591: this_result = 1;
592: if ((negate = attrib[0] == '!'))
593: attrib++;
594: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 595: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 596: if (attributes > 1 ||
1.213 dtucker 597: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 598: error("%.200s line %d: '%s' cannot be combined "
599: "with other Match attributes",
600: filename, linenum, oattrib);
1.213 dtucker 601: result = -1;
602: goto out;
603: }
1.221 djm 604: if (result)
605: result = negate ? 0 : 1;
1.213 dtucker 606: goto out;
607: }
1.221 djm 608: attributes++;
1.302 djm 609: if (strcasecmp(attrib, "canonical") == 0 ||
610: strcasecmp(attrib, "final") == 0) {
611: /*
612: * If the config requests "Match final" then remember
613: * this so we can perform a second pass later.
614: */
615: if (strcasecmp(attrib, "final") == 0 &&
616: want_final_pass != NULL)
617: *want_final_pass = 1;
618: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 619: if (r == (negate ? 1 : 0))
620: this_result = result = 0;
621: debug3("%.200s line %d: %smatched '%s'",
622: filename, linenum,
623: this_result ? "" : "not ", oattrib);
624: continue;
625: }
626: /* All other criteria require an argument */
1.206 djm 627: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
628: error("Missing Match criteria for %s", attrib);
1.211 djm 629: result = -1;
630: goto out;
1.206 djm 631: }
632: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 633: criteria = xstrdup(host);
1.235 djm 634: r = match_hostname(host, arg) == 1;
1.221 djm 635: if (r == (negate ? 1 : 0))
636: this_result = result = 0;
1.206 djm 637: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 638: criteria = xstrdup(original_host);
1.235 djm 639: r = match_hostname(original_host, arg) == 1;
1.221 djm 640: if (r == (negate ? 1 : 0))
641: this_result = result = 0;
1.206 djm 642: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 643: criteria = xstrdup(ruser);
1.235 djm 644: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 645: if (r == (negate ? 1 : 0))
646: this_result = result = 0;
1.206 djm 647: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 648: criteria = xstrdup(pw->pw_name);
1.235 djm 649: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 650: if (r == (negate ? 1 : 0))
651: this_result = result = 0;
1.210 djm 652: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 ! dtucker 653: char *conn_hash_hex, *keyalias;
1.327 dtucker 654:
1.206 djm 655: if (gethostname(thishost, sizeof(thishost)) == -1)
656: fatal("gethostname: %s", strerror(errno));
657: strlcpy(shorthost, thishost, sizeof(shorthost));
658: shorthost[strcspn(thishost, ".")] = '\0';
659: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 660: snprintf(uidstr, sizeof(uidstr), "%llu",
661: (unsigned long long)pw->pw_uid);
1.327 dtucker 662: conn_hash_hex = ssh_connection_hash(thishost, host,
1.328 dtucker 663: portstr, ruser);
1.333 ! dtucker 664: keyalias = options->host_key_alias ?
! 665: options->host_key_alias : host;
1.206 djm 666:
667: cmd = percent_expand(arg,
1.327 dtucker 668: "C", conn_hash_hex,
1.206 djm 669: "L", shorthost,
670: "d", pw->pw_dir,
671: "h", host,
1.333 ! dtucker 672: "k", keyalias,
1.206 djm 673: "l", thishost,
1.221 djm 674: "n", original_host,
1.206 djm 675: "p", portstr,
676: "r", ruser,
677: "u", pw->pw_name,
1.288 djm 678: "i", uidstr,
1.206 djm 679: (char *)NULL);
1.327 dtucker 680: free(conn_hash_hex);
1.217 djm 681: if (result != 1) {
682: /* skip execution if prior predicate failed */
1.221 djm 683: debug3("%.200s line %d: skipped exec "
684: "\"%.100s\"", filename, linenum, cmd);
685: free(cmd);
686: continue;
687: }
688: r = execute_in_shell(cmd);
689: if (r == -1) {
690: fatal("%.200s line %d: match exec "
691: "'%.100s' error", filename,
692: linenum, cmd);
1.217 djm 693: }
1.221 djm 694: criteria = xstrdup(cmd);
1.206 djm 695: free(cmd);
1.221 djm 696: /* Force exit status to boolean */
697: r = r == 0;
698: if (r == (negate ? 1 : 0))
699: this_result = result = 0;
1.206 djm 700: } else {
701: error("Unsupported Match attribute %s", attrib);
1.211 djm 702: result = -1;
703: goto out;
1.206 djm 704: }
1.221 djm 705: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
706: filename, linenum, this_result ? "": "not ",
707: oattrib, criteria);
708: free(criteria);
1.213 dtucker 709: }
710: if (attributes == 0) {
711: error("One or more attributes required for Match");
712: result = -1;
713: goto out;
1.206 djm 714: }
1.221 djm 715: out:
716: if (result != -1)
717: debug2("match %sfound", result ? "" : "not ");
1.206 djm 718: *condition = cp;
1.211 djm 719: free(host);
1.206 djm 720: return result;
721: }
722:
1.286 djm 723: /* Remove environment variable by pattern */
724: static void
725: rm_env(Options *options, const char *arg, const char *filename, int linenum)
726: {
1.330 djm 727: int i, j, onum_send_env = options->num_send_env;
1.286 djm 728: char *cp;
729:
730: /* Remove an environment variable */
731: for (i = 0; i < options->num_send_env; ) {
732: cp = xstrdup(options->send_env[i]);
733: if (!match_pattern(cp, arg + 1)) {
734: free(cp);
735: i++;
736: continue;
737: }
738: debug3("%s line %d: removing environment %s",
739: filename, linenum, cp);
740: free(cp);
741: free(options->send_env[i]);
742: options->send_env[i] = NULL;
743: for (j = i; j < options->num_send_env - 1; j++) {
744: options->send_env[j] = options->send_env[j + 1];
745: options->send_env[j + 1] = NULL;
746: }
747: options->num_send_env--;
748: /* NB. don't increment i */
1.330 djm 749: }
750: if (onum_send_env != options->num_send_env) {
751: options->send_env = xrecallocarray(options->send_env,
752: onum_send_env, options->num_send_env,
753: sizeof(*options->send_env));
1.286 djm 754: }
755: }
756:
1.19 markus 757: /*
1.70 stevesk 758: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 759: */
1.26 markus 760: static OpCodes
1.199 djm 761: parse_token(const char *cp, const char *filename, int linenum,
762: const char *ignored_unknown)
1.1 deraadt 763: {
1.199 djm 764: int i;
1.1 deraadt 765:
1.17 markus 766: for (i = 0; keywords[i].name; i++)
1.199 djm 767: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 768: return keywords[i].opcode;
1.235 djm 769: if (ignored_unknown != NULL &&
770: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 771: return oIgnoredUnknownOption;
1.75 stevesk 772: error("%s: line %d: Bad configuration option: %s",
773: filename, linenum, cp);
1.17 markus 774: return oBadOption;
1.1 deraadt 775: }
776:
1.207 djm 777: /* Multistate option parsing */
778: struct multistate {
779: char *key;
780: int value;
781: };
782: static const struct multistate multistate_flag[] = {
783: { "true", 1 },
784: { "false", 0 },
785: { "yes", 1 },
786: { "no", 0 },
787: { NULL, -1 }
788: };
789: static const struct multistate multistate_yesnoask[] = {
790: { "true", 1 },
791: { "false", 0 },
792: { "yes", 1 },
793: { "no", 0 },
794: { "ask", 2 },
795: { NULL, -1 }
796: };
1.278 djm 797: static const struct multistate multistate_strict_hostkey[] = {
798: { "true", SSH_STRICT_HOSTKEY_YES },
799: { "false", SSH_STRICT_HOSTKEY_OFF },
800: { "yes", SSH_STRICT_HOSTKEY_YES },
801: { "no", SSH_STRICT_HOSTKEY_OFF },
802: { "ask", SSH_STRICT_HOSTKEY_ASK },
803: { "off", SSH_STRICT_HOSTKEY_OFF },
804: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
805: { NULL, -1 }
806: };
1.246 jcs 807: static const struct multistate multistate_yesnoaskconfirm[] = {
808: { "true", 1 },
809: { "false", 0 },
810: { "yes", 1 },
811: { "no", 0 },
812: { "ask", 2 },
813: { "confirm", 3 },
814: { NULL, -1 }
815: };
1.207 djm 816: static const struct multistate multistate_addressfamily[] = {
817: { "inet", AF_INET },
818: { "inet6", AF_INET6 },
819: { "any", AF_UNSPEC },
820: { NULL, -1 }
821: };
822: static const struct multistate multistate_controlmaster[] = {
823: { "true", SSHCTL_MASTER_YES },
824: { "yes", SSHCTL_MASTER_YES },
825: { "false", SSHCTL_MASTER_NO },
826: { "no", SSHCTL_MASTER_NO },
827: { "auto", SSHCTL_MASTER_AUTO },
828: { "ask", SSHCTL_MASTER_ASK },
829: { "autoask", SSHCTL_MASTER_AUTO_ASK },
830: { NULL, -1 }
831: };
832: static const struct multistate multistate_tunnel[] = {
833: { "ethernet", SSH_TUNMODE_ETHERNET },
834: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
835: { "true", SSH_TUNMODE_DEFAULT },
836: { "yes", SSH_TUNMODE_DEFAULT },
837: { "false", SSH_TUNMODE_NO },
838: { "no", SSH_TUNMODE_NO },
839: { NULL, -1 }
840: };
841: static const struct multistate multistate_requesttty[] = {
842: { "true", REQUEST_TTY_YES },
843: { "yes", REQUEST_TTY_YES },
844: { "false", REQUEST_TTY_NO },
845: { "no", REQUEST_TTY_NO },
846: { "force", REQUEST_TTY_FORCE },
847: { "auto", REQUEST_TTY_AUTO },
848: { NULL, -1 }
849: };
1.209 djm 850: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 851: { "true", SSH_CANONICALISE_YES },
852: { "false", SSH_CANONICALISE_NO },
853: { "yes", SSH_CANONICALISE_YES },
854: { "no", SSH_CANONICALISE_NO },
855: { "always", SSH_CANONICALISE_ALWAYS },
856: { NULL, -1 }
857: };
1.322 dtucker 858: static const struct multistate multistate_compression[] = {
859: #ifdef WITH_ZLIB
860: { "yes", COMP_ZLIB },
861: #endif
862: { "no", COMP_NONE },
863: { NULL, -1 }
864: };
1.207 djm 865:
1.19 markus 866: /*
867: * Processes a single option line as used in the configuration files. This
868: * only sets those values that have not already been set.
869: */
1.14 markus 870: int
1.206 djm 871: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 872: const char *original_host, char *line, const char *filename,
873: int linenum, int *activep, int flags)
1.1 deraadt 874: {
1.252 djm 875: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 876: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 877: }
878:
879: #define WHITESPACE " \t\r\n"
880: static int
881: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
882: const char *original_host, char *line, const char *filename,
1.302 djm 883: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 884: {
1.193 djm 885: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
886: char **cpptr, fwdarg[256];
1.199 djm 887: u_int i, *uintptr, max_entries = 0;
1.252 djm 888: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 889: int remotefwd, dynamicfwd;
1.164 dtucker 890: LogLevel *log_level_ptr;
1.271 dtucker 891: SyslogFacility *log_facility_ptr;
1.201 dtucker 892: long long val64;
1.102 markus 893: size_t len;
1.220 millert 894: struct Forward fwd;
1.207 djm 895: const struct multistate *multistate_ptr;
1.208 djm 896: struct allowed_cname *cname;
1.252 djm 897: glob_t gl;
1.281 dtucker 898: const char *errstr;
1.106 djm 899:
1.206 djm 900: if (activep == NULL) { /* We are processing a command line directive */
901: cmdline = 1;
902: activep = &cmdline;
903: }
904:
1.267 djm 905: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 906: if ((len = strlen(line)) == 0)
907: return 0;
908: for (len--; len > 0; len--) {
1.267 djm 909: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 910: break;
911: line[len] = '\0';
912: }
1.1 deraadt 913:
1.42 provos 914: s = line;
915: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 916: if ((keyword = strdelim(&s)) == NULL)
917: return 0;
1.42 provos 918: /* Ignore leading whitespace. */
919: if (*keyword == '\0')
1.43 markus 920: keyword = strdelim(&s);
1.56 deraadt 921: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 922: return 0;
1.199 djm 923: /* Match lowercase keyword */
1.207 djm 924: lowercase(keyword);
1.17 markus 925:
1.199 djm 926: opcode = parse_token(keyword, filename, linenum,
927: options->ignored_unknown);
1.17 markus 928:
929: switch (opcode) {
930: case oBadOption:
1.19 markus 931: /* don't panic, but count bad options */
932: return -1;
1.273 djm 933: case oIgnore:
934: return 0;
1.199 djm 935: case oIgnoredUnknownOption:
936: debug("%s line %d: Ignored unknown option \"%s\"",
937: filename, linenum, keyword);
938: return 0;
1.111 djm 939: case oConnectTimeout:
940: intptr = &options->connection_timeout;
1.127 markus 941: parse_time:
1.111 djm 942: arg = strdelim(&s);
943: if (!arg || *arg == '\0')
944: fatal("%s line %d: missing time value.",
945: filename, linenum);
1.221 djm 946: if (strcmp(arg, "none") == 0)
947: value = -1;
948: else if ((value = convtime(arg)) == -1)
1.111 djm 949: fatal("%s line %d: invalid time value.",
950: filename, linenum);
1.160 dtucker 951: if (*activep && *intptr == -1)
1.111 djm 952: *intptr = value;
953: break;
954:
1.17 markus 955: case oForwardAgent:
956: intptr = &options->forward_agent;
1.319 djm 957:
958: arg = strdelim(&s);
959: if (!arg || *arg == '\0')
960: fatal("%s line %d: missing argument.",
961: filename, linenum);
962:
963: value = -1;
964: multistate_ptr = multistate_flag;
965: for (i = 0; multistate_ptr[i].key != NULL; i++) {
966: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
967: value = multistate_ptr[i].value;
968: break;
969: }
970: }
971: if (value != -1) {
972: if (*activep && *intptr == -1)
973: *intptr = value;
974: break;
975: }
976: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
977: if (*activep && *intptr == -1)
978: *intptr = 1;
979:
980: charptr = &options->forward_agent_sock_path;
981: goto parse_agent_path;
982:
983: case oForwardX11:
984: intptr = &options->forward_x11;
1.207 djm 985: parse_flag:
986: multistate_ptr = multistate_flag;
987: parse_multistate:
1.42 provos 988: arg = strdelim(&s);
1.40 ho 989: if (!arg || *arg == '\0')
1.207 djm 990: fatal("%s line %d: missing argument.",
991: filename, linenum);
992: value = -1;
993: for (i = 0; multistate_ptr[i].key != NULL; i++) {
994: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
995: value = multistate_ptr[i].value;
996: break;
997: }
998: }
999: if (value == -1)
1000: fatal("%s line %d: unsupported option \"%s\".",
1001: filename, linenum, arg);
1.17 markus 1002: if (*activep && *intptr == -1)
1003: *intptr = value;
1004: break;
1005:
1.123 markus 1006: case oForwardX11Trusted:
1007: intptr = &options->forward_x11_trusted;
1008: goto parse_flag;
1.221 djm 1009:
1.186 djm 1010: case oForwardX11Timeout:
1011: intptr = &options->forward_x11_timeout;
1012: goto parse_time;
1.123 markus 1013:
1.17 markus 1014: case oGatewayPorts:
1.220 millert 1015: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1016: goto parse_flag;
1017:
1.153 markus 1018: case oExitOnForwardFailure:
1019: intptr = &options->exit_on_forward_failure;
1020: goto parse_flag;
1021:
1.17 markus 1022: case oPasswordAuthentication:
1023: intptr = &options->password_authentication;
1024: goto parse_flag;
1025:
1.48 markus 1026: case oKbdInteractiveAuthentication:
1027: intptr = &options->kbd_interactive_authentication;
1028: goto parse_flag;
1029:
1030: case oKbdInteractiveDevices:
1031: charptr = &options->kbd_interactive_devices;
1032: goto parse_string;
1033:
1.50 markus 1034: case oPubkeyAuthentication:
1035: intptr = &options->pubkey_authentication;
1.30 markus 1036: goto parse_flag;
1037:
1.72 markus 1038: case oHostbasedAuthentication:
1039: intptr = &options->hostbased_authentication;
1040: goto parse_flag;
1041:
1.59 markus 1042: case oChallengeResponseAuthentication:
1.78 markus 1043: intptr = &options->challenge_response_authentication;
1.17 markus 1044: goto parse_flag;
1.108 jakob 1045:
1.118 markus 1046: case oGssAuthentication:
1047: intptr = &options->gss_authentication;
1048: goto parse_flag;
1049:
1050: case oGssDelegateCreds:
1051: intptr = &options->gss_deleg_creds;
1052: goto parse_flag;
1053:
1.17 markus 1054: case oBatchMode:
1055: intptr = &options->batch_mode;
1056: goto parse_flag;
1057:
1058: case oCheckHostIP:
1059: intptr = &options->check_host_ip;
1.167 grunk 1060: goto parse_flag;
1.17 markus 1061:
1.107 jakob 1062: case oVerifyHostKeyDNS:
1063: intptr = &options->verify_host_key_dns;
1.207 djm 1064: multistate_ptr = multistate_yesnoask;
1065: goto parse_multistate;
1.107 jakob 1066:
1.17 markus 1067: case oStrictHostKeyChecking:
1068: intptr = &options->strict_host_key_checking;
1.278 djm 1069: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1070: goto parse_multistate;
1.17 markus 1071:
1072: case oCompression:
1073: intptr = &options->compression;
1.322 dtucker 1074: multistate_ptr = multistate_compression;
1075: goto parse_multistate;
1.17 markus 1076:
1.126 markus 1077: case oTCPKeepAlive:
1078: intptr = &options->tcp_keep_alive;
1.17 markus 1079: goto parse_flag;
1080:
1.91 markus 1081: case oNoHostAuthenticationForLocalhost:
1082: intptr = &options->no_host_authentication_for_localhost;
1083: goto parse_flag;
1084:
1.17 markus 1085: case oNumberOfPasswordPrompts:
1086: intptr = &options->number_of_password_prompts;
1087: goto parse_int;
1088:
1.105 markus 1089: case oRekeyLimit:
1090: arg = strdelim(&s);
1091: if (!arg || *arg == '\0')
1.198 dtucker 1092: fatal("%.200s line %d: Missing argument.", filename,
1093: linenum);
1094: if (strcmp(arg, "default") == 0) {
1095: val64 = 0;
1096: } else {
1.200 dtucker 1097: if (scan_scaled(arg, &val64) == -1)
1098: fatal("%.200s line %d: Bad number '%s': %s",
1099: filename, linenum, arg, strerror(errno));
1.198 dtucker 1100: if (val64 != 0 && val64 < 16)
1101: fatal("%.200s line %d: RekeyLimit too small",
1102: filename, linenum);
1.105 markus 1103: }
1.165 djm 1104: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1105: options->rekey_limit = val64;
1.198 dtucker 1106: if (s != NULL) { /* optional rekey interval present */
1107: if (strcmp(s, "none") == 0) {
1108: (void)strdelim(&s); /* discard */
1109: break;
1110: }
1111: intptr = &options->rekey_interval;
1112: goto parse_time;
1113: }
1.105 markus 1114: break;
1115:
1.17 markus 1116: case oIdentityFile:
1.42 provos 1117: arg = strdelim(&s);
1.40 ho 1118: if (!arg || *arg == '\0')
1.17 markus 1119: fatal("%.200s line %d: Missing argument.", filename, linenum);
1120: if (*activep) {
1.50 markus 1121: intptr = &options->num_identity_files;
1.27 markus 1122: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 1123: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 1124: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 1125: add_identity_file(options, NULL,
1126: arg, flags & SSHCONF_USERCONF);
1.17 markus 1127: }
1128: break;
1129:
1.241 djm 1130: case oCertificateFile:
1131: arg = strdelim(&s);
1132: if (!arg || *arg == '\0')
1133: fatal("%.200s line %d: Missing argument.",
1134: filename, linenum);
1135: if (*activep) {
1136: intptr = &options->num_certificate_files;
1137: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1138: fatal("%.200s line %d: Too many certificate "
1139: "files specified (max %d).",
1140: filename, linenum,
1141: SSH_MAX_CERTIFICATE_FILES);
1142: }
1143: add_certificate_file(options, arg,
1144: flags & SSHCONF_USERCONF);
1145: }
1146: break;
1147:
1.34 markus 1148: case oXAuthLocation:
1149: charptr=&options->xauth_location;
1150: goto parse_string;
1151:
1.17 markus 1152: case oUser:
1153: charptr = &options->user;
1154: parse_string:
1.42 provos 1155: arg = strdelim(&s);
1.40 ho 1156: if (!arg || *arg == '\0')
1.193 djm 1157: fatal("%.200s line %d: Missing argument.",
1158: filename, linenum);
1.17 markus 1159: if (*activep && *charptr == NULL)
1.38 provos 1160: *charptr = xstrdup(arg);
1.17 markus 1161: break;
1162:
1163: case oGlobalKnownHostsFile:
1.193 djm 1164: cpptr = (char **)&options->system_hostfiles;
1165: uintptr = &options->num_system_hostfiles;
1166: max_entries = SSH_MAX_HOSTS_FILES;
1167: parse_char_array:
1168: if (*activep && *uintptr == 0) {
1169: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1170: if ((*uintptr) >= max_entries)
1171: fatal("%s line %d: "
1.329 dtucker 1172: "too many known hosts files.",
1.193 djm 1173: filename, linenum);
1174: cpptr[(*uintptr)++] = xstrdup(arg);
1175: }
1176: }
1177: return 0;
1.17 markus 1178:
1179: case oUserKnownHostsFile:
1.193 djm 1180: cpptr = (char **)&options->user_hostfiles;
1181: uintptr = &options->num_user_hostfiles;
1182: max_entries = SSH_MAX_HOSTS_FILES;
1183: goto parse_char_array;
1.27 markus 1184:
1.306 jmc 1185: case oHostname:
1.17 markus 1186: charptr = &options->hostname;
1187: goto parse_string;
1188:
1.52 markus 1189: case oHostKeyAlias:
1190: charptr = &options->host_key_alias;
1191: goto parse_string;
1192:
1.67 markus 1193: case oPreferredAuthentications:
1194: charptr = &options->preferred_authentications;
1195: goto parse_string;
1196:
1.77 markus 1197: case oBindAddress:
1198: charptr = &options->bind_address;
1199: goto parse_string;
1200:
1.282 djm 1201: case oBindInterface:
1202: charptr = &options->bind_interface;
1203: goto parse_string;
1204:
1.183 markus 1205: case oPKCS11Provider:
1206: charptr = &options->pkcs11_provider;
1.86 markus 1207: goto parse_string;
1.85 jakob 1208:
1.310 djm 1209: case oSecurityKeyProvider:
1210: charptr = &options->sk_provider;
1211: goto parse_string;
1212:
1.17 markus 1213: case oProxyCommand:
1.144 reyk 1214: charptr = &options->proxy_command;
1.257 djm 1215: /* Ignore ProxyCommand if ProxyJump already specified */
1216: if (options->jump_host != NULL)
1217: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1218: parse_command:
1.113 markus 1219: if (s == NULL)
1220: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1221: len = strspn(s, WHITESPACE "=");
1.17 markus 1222: if (*activep && *charptr == NULL)
1.102 markus 1223: *charptr = xstrdup(s + len);
1.17 markus 1224: return 0;
1225:
1.257 djm 1226: case oProxyJump:
1227: if (s == NULL) {
1228: fatal("%.200s line %d: Missing argument.",
1229: filename, linenum);
1230: }
1231: len = strspn(s, WHITESPACE "=");
1232: if (parse_jump(s + len, options, *activep) == -1) {
1233: fatal("%.200s line %d: Invalid ProxyJump \"%s\"",
1234: filename, linenum, s + len);
1235: }
1236: return 0;
1237:
1.17 markus 1238: case oPort:
1.300 naddy 1239: arg = strdelim(&s);
1240: if (!arg || *arg == '\0')
1241: fatal("%.200s line %d: Missing argument.",
1242: filename, linenum);
1243: value = a2port(arg);
1244: if (value <= 0)
1245: fatal("%.200s line %d: Bad port '%s'.",
1246: filename, linenum, arg);
1247: if (*activep && options->port == -1)
1248: options->port = value;
1249: break;
1250:
1251: case oConnectionAttempts:
1252: intptr = &options->connection_attempts;
1.17 markus 1253: parse_int:
1.42 provos 1254: arg = strdelim(&s);
1.281 dtucker 1255: if ((errstr = atoi_err(arg, &value)) != NULL)
1256: fatal("%s line %d: integer value %s.",
1257: filename, linenum, errstr);
1.17 markus 1258: if (*activep && *intptr == -1)
1259: *intptr = value;
1260: break;
1261:
1.25 markus 1262: case oCiphers:
1.42 provos 1263: arg = strdelim(&s);
1.40 ho 1264: if (!arg || *arg == '\0')
1.32 markus 1265: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1266: if (*arg != '-' &&
1267: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.31 markus 1268: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1269: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1270: if (*activep && options->ciphers == NULL)
1.38 provos 1271: options->ciphers = xstrdup(arg);
1.25 markus 1272: break;
1273:
1.62 markus 1274: case oMacs:
1275: arg = strdelim(&s);
1276: if (!arg || *arg == '\0')
1277: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1278: if (*arg != '-' &&
1279: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.305 dtucker 1280: fatal("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1281: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1282: if (*activep && options->macs == NULL)
1283: options->macs = xstrdup(arg);
1284: break;
1285:
1.189 djm 1286: case oKexAlgorithms:
1287: arg = strdelim(&s);
1288: if (!arg || *arg == '\0')
1289: fatal("%.200s line %d: Missing argument.",
1290: filename, linenum);
1.268 djm 1291: if (*arg != '-' &&
1.309 naddy 1292: !kex_names_valid(*arg == '+' || *arg == '^' ?
1293: arg + 1 : arg))
1.189 djm 1294: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1295: filename, linenum, arg ? arg : "<NONE>");
1296: if (*activep && options->kex_algorithms == NULL)
1297: options->kex_algorithms = xstrdup(arg);
1298: break;
1299:
1.76 markus 1300: case oHostKeyAlgorithms:
1.238 markus 1301: charptr = &options->hostkeyalgorithms;
1302: parse_keytypes:
1.76 markus 1303: arg = strdelim(&s);
1304: if (!arg || *arg == '\0')
1.238 markus 1305: fatal("%.200s line %d: Missing argument.",
1306: filename, linenum);
1.268 djm 1307: if (*arg != '-' &&
1.309 naddy 1308: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1309: arg + 1 : arg, 1))
1.238 markus 1310: fatal("%s line %d: Bad key types '%s'.",
1311: filename, linenum, arg ? arg : "<NONE>");
1312: if (*activep && *charptr == NULL)
1313: *charptr = xstrdup(arg);
1.76 markus 1314: break;
1315:
1.298 djm 1316: case oCASignatureAlgorithms:
1317: charptr = &options->ca_sign_algorithms;
1318: goto parse_keytypes;
1319:
1.17 markus 1320: case oLogLevel:
1.164 dtucker 1321: log_level_ptr = &options->log_level;
1.42 provos 1322: arg = strdelim(&s);
1.38 provos 1323: value = log_level_number(arg);
1.95 markus 1324: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1325: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1326: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1327: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1328: *log_level_ptr = (LogLevel) value;
1.17 markus 1329: break;
1330:
1.271 dtucker 1331: case oLogFacility:
1332: log_facility_ptr = &options->log_facility;
1333: arg = strdelim(&s);
1334: value = log_facility_number(arg);
1335: if (value == SYSLOG_FACILITY_NOT_SET)
1336: fatal("%.200s line %d: unsupported log facility '%s'",
1337: filename, linenum, arg ? arg : "<NONE>");
1338: if (*log_facility_ptr == -1)
1339: *log_facility_ptr = (SyslogFacility) value;
1340: break;
1341:
1.88 stevesk 1342: case oLocalForward:
1.17 markus 1343: case oRemoteForward:
1.168 stevesk 1344: case oDynamicForward:
1.42 provos 1345: arg = strdelim(&s);
1.135 djm 1346: if (arg == NULL || *arg == '\0')
1.88 stevesk 1347: fatal("%.200s line %d: Missing port argument.",
1348: filename, linenum);
1.135 djm 1349:
1.279 markus 1350: remotefwd = (opcode == oRemoteForward);
1351: dynamicfwd = (opcode == oDynamicForward);
1352:
1353: if (!dynamicfwd) {
1.168 stevesk 1354: arg2 = strdelim(&s);
1.279 markus 1355: if (arg2 == NULL || *arg2 == '\0') {
1356: if (remotefwd)
1357: dynamicfwd = 1;
1358: else
1359: fatal("%.200s line %d: Missing target "
1360: "argument.", filename, linenum);
1361: } else {
1362: /* construct a string for parse_forward */
1363: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1364: arg2);
1365: }
1366: }
1367: if (dynamicfwd)
1.168 stevesk 1368: strlcpy(fwdarg, arg, sizeof(fwdarg));
1369:
1.279 markus 1370: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0)
1.88 stevesk 1371: fatal("%.200s line %d: Bad forwarding specification.",
1372: filename, linenum);
1.135 djm 1373:
1.88 stevesk 1374: if (*activep) {
1.279 markus 1375: if (remotefwd) {
1376: add_remote_forward(options, &fwd);
1377: } else {
1.135 djm 1378: add_local_forward(options, &fwd);
1.279 markus 1379: }
1.88 stevesk 1380: }
1.17 markus 1381: break;
1.71 markus 1382:
1.90 stevesk 1383: case oClearAllForwardings:
1384: intptr = &options->clear_forwardings;
1385: goto parse_flag;
1386:
1.17 markus 1387: case oHost:
1.206 djm 1388: if (cmdline)
1389: fatal("Host directive not supported as a command-line "
1390: "option");
1.17 markus 1391: *activep = 0;
1.191 djm 1392: arg2 = NULL;
1393: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.252 djm 1394: if ((flags & SSHCONF_NEVERMATCH) != 0)
1395: break;
1.191 djm 1396: negated = *arg == '!';
1397: if (negated)
1398: arg++;
1.38 provos 1399: if (match_pattern(host, arg)) {
1.191 djm 1400: if (negated) {
1401: debug("%.200s line %d: Skipping Host "
1402: "block because of negated match "
1403: "for %.100s", filename, linenum,
1404: arg);
1405: *activep = 0;
1406: break;
1407: }
1408: if (!*activep)
1409: arg2 = arg; /* logged below */
1.17 markus 1410: *activep = 1;
1411: }
1.191 djm 1412: }
1413: if (*activep)
1414: debug("%.200s line %d: Applying options for %.100s",
1415: filename, linenum, arg2);
1.42 provos 1416: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1417: return 0;
1418:
1.206 djm 1419: case oMatch:
1420: if (cmdline)
1421: fatal("Host directive not supported as a command-line "
1422: "option");
1.221 djm 1423: value = match_cfg_line(options, &s, pw, host, original_host,
1.302 djm 1424: flags & SSHCONF_FINAL, want_final_pass,
1425: filename, linenum);
1.206 djm 1426: if (value < 0)
1427: fatal("%.200s line %d: Bad Match condition", filename,
1428: linenum);
1.252 djm 1429: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.206 djm 1430: break;
1431:
1.17 markus 1432: case oEscapeChar:
1433: intptr = &options->escape_char;
1.42 provos 1434: arg = strdelim(&s);
1.40 ho 1435: if (!arg || *arg == '\0')
1.17 markus 1436: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1437: if (strcmp(arg, "none") == 0)
1438: value = SSH_ESCAPECHAR_NONE;
1439: else if (arg[1] == '\0')
1440: value = (u_char) arg[0];
1441: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1442: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1443: value = (u_char) arg[1] & 31;
1.17 markus 1444: else {
1445: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1446: filename, linenum);
1.17 markus 1447: /* NOTREACHED */
1448: value = 0; /* Avoid compiler warning. */
1449: }
1450: if (*activep && *intptr == -1)
1451: *intptr = value;
1.112 djm 1452: break;
1453:
1454: case oAddressFamily:
1.114 djm 1455: intptr = &options->address_family;
1.207 djm 1456: multistate_ptr = multistate_addressfamily;
1457: goto parse_multistate;
1.17 markus 1458:
1.101 markus 1459: case oEnableSSHKeysign:
1460: intptr = &options->enable_ssh_keysign;
1461: goto parse_flag;
1462:
1.128 markus 1463: case oIdentitiesOnly:
1464: intptr = &options->identities_only;
1465: goto parse_flag;
1466:
1.127 markus 1467: case oServerAliveInterval:
1468: intptr = &options->server_alive_interval;
1469: goto parse_time;
1470:
1471: case oServerAliveCountMax:
1472: intptr = &options->server_alive_count_max;
1473: goto parse_int;
1474:
1.130 djm 1475: case oSendEnv:
1476: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1477: if (strchr(arg, '=') != NULL)
1478: fatal("%s line %d: Invalid environment name.",
1479: filename, linenum);
1.137 djm 1480: if (!*activep)
1481: continue;
1.286 djm 1482: if (*arg == '-') {
1483: /* Removing an env var */
1484: rm_env(options, arg, filename, linenum);
1485: continue;
1486: } else {
1487: /* Adding an env var */
1.290 djm 1488: if (options->num_send_env >= INT_MAX)
1.286 djm 1489: fatal("%s line %d: too many send env.",
1490: filename, linenum);
1.290 djm 1491: options->send_env = xrecallocarray(
1492: options->send_env, options->num_send_env,
1.291 djm 1493: options->num_send_env + 1,
1.290 djm 1494: sizeof(*options->send_env));
1.286 djm 1495: options->send_env[options->num_send_env++] =
1496: xstrdup(arg);
1497: }
1.130 djm 1498: }
1499: break;
1500:
1.290 djm 1501: case oSetEnv:
1502: value = options->num_setenv;
1503: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1504: if (strchr(arg, '=') == NULL)
1505: fatal("%s line %d: Invalid SetEnv.",
1506: filename, linenum);
1507: if (!*activep || value != 0)
1508: continue;
1509: /* Adding a setenv var */
1510: if (options->num_setenv >= INT_MAX)
1511: fatal("%s line %d: too many SetEnv.",
1512: filename, linenum);
1513: options->setenv = xrecallocarray(
1514: options->setenv, options->num_setenv,
1515: options->num_setenv + 1, sizeof(*options->setenv));
1516: options->setenv[options->num_setenv++] = xstrdup(arg);
1517: }
1518: break;
1519:
1.132 djm 1520: case oControlPath:
1521: charptr = &options->control_path;
1522: goto parse_string;
1523:
1524: case oControlMaster:
1525: intptr = &options->control_master;
1.207 djm 1526: multistate_ptr = multistate_controlmaster;
1527: goto parse_multistate;
1.132 djm 1528:
1.187 djm 1529: case oControlPersist:
1530: /* no/false/yes/true, or a time spec */
1531: intptr = &options->control_persist;
1532: arg = strdelim(&s);
1533: if (!arg || *arg == '\0')
1534: fatal("%.200s line %d: Missing ControlPersist"
1535: " argument.", filename, linenum);
1536: value = 0;
1537: value2 = 0; /* timeout */
1538: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1539: value = 0;
1540: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1541: value = 1;
1542: else if ((value2 = convtime(arg)) >= 0)
1543: value = 1;
1544: else
1545: fatal("%.200s line %d: Bad ControlPersist argument.",
1546: filename, linenum);
1547: if (*activep && *intptr == -1) {
1548: *intptr = value;
1549: options->control_persist_timeout = value2;
1550: }
1551: break;
1552:
1.136 djm 1553: case oHashKnownHosts:
1554: intptr = &options->hash_known_hosts;
1555: goto parse_flag;
1556:
1.144 reyk 1557: case oTunnel:
1558: intptr = &options->tun_open;
1.207 djm 1559: multistate_ptr = multistate_tunnel;
1560: goto parse_multistate;
1.144 reyk 1561:
1562: case oTunnelDevice:
1563: arg = strdelim(&s);
1564: if (!arg || *arg == '\0')
1565: fatal("%.200s line %d: Missing argument.", filename, linenum);
1566: value = a2tun(arg, &value2);
1.145 reyk 1567: if (value == SSH_TUNID_ERR)
1.144 reyk 1568: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1569: if (*activep) {
1570: options->tun_local = value;
1571: options->tun_remote = value2;
1572: }
1573: break;
1574:
1575: case oLocalCommand:
1576: charptr = &options->local_command;
1577: goto parse_command;
1578:
1579: case oPermitLocalCommand:
1580: intptr = &options->permit_local_command;
1581: goto parse_flag;
1582:
1.277 bluhm 1583: case oRemoteCommand:
1584: charptr = &options->remote_command;
1585: goto parse_command;
1586:
1.167 grunk 1587: case oVisualHostKey:
1588: intptr = &options->visual_host_key;
1589: goto parse_flag;
1590:
1.252 djm 1591: case oInclude:
1592: if (cmdline)
1593: fatal("Include directive not supported as a "
1594: "command-line option");
1595: value = 0;
1596: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1597: /*
1598: * Ensure all paths are anchored. User configuration
1599: * files may begin with '~/' but system configurations
1600: * must not. If the path is relative, then treat it
1601: * as living in ~/.ssh for user configurations or
1602: * /etc/ssh for system ones.
1603: */
1604: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0)
1605: fatal("%.200s line %d: bad include path %s.",
1606: filename, linenum, arg);
1.301 djm 1607: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1608: xasprintf(&arg2, "%s/%s",
1609: (flags & SSHCONF_USERCONF) ?
1610: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1611: } else
1612: arg2 = xstrdup(arg);
1613: memset(&gl, 0, sizeof(gl));
1614: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1615: if (r == GLOB_NOMATCH) {
1616: debug("%.200s line %d: include %s matched no "
1617: "files",filename, linenum, arg2);
1.269 dtucker 1618: free(arg2);
1.252 djm 1619: continue;
1.313 deraadt 1620: } else if (r != 0)
1.252 djm 1621: fatal("%.200s line %d: glob failed for %s.",
1622: filename, linenum, arg2);
1623: free(arg2);
1624: oactive = *activep;
1.313 deraadt 1625: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1626: debug3("%.200s line %d: Including file %s "
1627: "depth %d%s", filename, linenum,
1628: gl.gl_pathv[i], depth,
1629: oactive ? "" : " (parse only)");
1630: r = read_config_file_depth(gl.gl_pathv[i],
1631: pw, host, original_host, options,
1632: flags | SSHCONF_CHECKPERM |
1633: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1634: activep, want_final_pass, depth + 1);
1.264 djm 1635: if (r != 1 && errno != ENOENT) {
1.263 djm 1636: fatal("Can't open user config file "
1637: "%.100s: %.100s", gl.gl_pathv[i],
1638: strerror(errno));
1639: }
1.252 djm 1640: /*
1641: * don't let Match in includes clobber the
1642: * containing file's Match state.
1643: */
1644: *activep = oactive;
1645: if (r != 1)
1646: value = -1;
1647: }
1648: globfree(&gl);
1649: }
1650: if (value != 0)
1651: return value;
1652: break;
1653:
1.190 djm 1654: case oIPQoS:
1655: arg = strdelim(&s);
1656: if ((value = parse_ipqos(arg)) == -1)
1657: fatal("%s line %d: Bad IPQoS value: %s",
1658: filename, linenum, arg);
1659: arg = strdelim(&s);
1660: if (arg == NULL)
1661: value2 = value;
1662: else if ((value2 = parse_ipqos(arg)) == -1)
1663: fatal("%s line %d: Bad IPQoS value: %s",
1664: filename, linenum, arg);
1665: if (*activep) {
1666: options->ip_qos_interactive = value;
1667: options->ip_qos_bulk = value2;
1668: }
1669: break;
1670:
1.192 djm 1671: case oRequestTTY:
1672: intptr = &options->request_tty;
1.207 djm 1673: multistate_ptr = multistate_requesttty;
1674: goto parse_multistate;
1.192 djm 1675:
1.199 djm 1676: case oIgnoreUnknown:
1677: charptr = &options->ignored_unknown;
1678: goto parse_string;
1679:
1.205 djm 1680: case oProxyUseFdpass:
1681: intptr = &options->proxy_use_fdpass;
1682: goto parse_flag;
1683:
1.208 djm 1684: case oCanonicalDomains:
1685: value = options->num_canonical_domains != 0;
1686: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.280 millert 1687: if (!valid_domain(arg, 1, &errstr)) {
1688: fatal("%s line %d: %s", filename, linenum,
1689: errstr);
1690: }
1.208 djm 1691: if (!*activep || value)
1692: continue;
1693: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1694: fatal("%s line %d: too many hostname suffixes.",
1695: filename, linenum);
1696: options->canonical_domains[
1697: options->num_canonical_domains++] = xstrdup(arg);
1698: }
1699: break;
1700:
1.209 djm 1701: case oCanonicalizePermittedCNAMEs:
1.208 djm 1702: value = options->num_permitted_cnames != 0;
1703: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1704: /* Either '*' for everything or 'list:list' */
1705: if (strcmp(arg, "*") == 0)
1706: arg2 = arg;
1707: else {
1708: lowercase(arg);
1709: if ((arg2 = strchr(arg, ':')) == NULL ||
1710: arg2[1] == '\0') {
1711: fatal("%s line %d: "
1712: "Invalid permitted CNAME \"%s\"",
1713: filename, linenum, arg);
1714: }
1715: *arg2 = '\0';
1716: arg2++;
1717: }
1718: if (!*activep || value)
1719: continue;
1720: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1721: fatal("%s line %d: too many permitted CNAMEs.",
1722: filename, linenum);
1723: cname = options->permitted_cnames +
1724: options->num_permitted_cnames++;
1725: cname->source_list = xstrdup(arg);
1726: cname->target_list = xstrdup(arg2);
1727: }
1728: break;
1729:
1.209 djm 1730: case oCanonicalizeHostname:
1731: intptr = &options->canonicalize_hostname;
1732: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1733: goto parse_multistate;
1734:
1.209 djm 1735: case oCanonicalizeMaxDots:
1736: intptr = &options->canonicalize_max_dots;
1.208 djm 1737: goto parse_int;
1738:
1.209 djm 1739: case oCanonicalizeFallbackLocal:
1740: intptr = &options->canonicalize_fallback_local;
1.208 djm 1741: goto parse_flag;
1742:
1.220 millert 1743: case oStreamLocalBindMask:
1744: arg = strdelim(&s);
1745: if (!arg || *arg == '\0')
1746: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1747: /* Parse mode in octal format */
1748: value = strtol(arg, &endofnumber, 8);
1749: if (arg == endofnumber || value < 0 || value > 0777)
1750: fatal("%.200s line %d: Bad mask.", filename, linenum);
1751: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1752: break;
1753:
1754: case oStreamLocalBindUnlink:
1755: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1756: goto parse_flag;
1757:
1.223 djm 1758: case oRevokedHostKeys:
1759: charptr = &options->revoked_host_keys;
1760: goto parse_string;
1761:
1.224 djm 1762: case oFingerprintHash:
1.225 djm 1763: intptr = &options->fingerprint_hash;
1.224 djm 1764: arg = strdelim(&s);
1765: if (!arg || *arg == '\0')
1766: fatal("%.200s line %d: Missing argument.",
1767: filename, linenum);
1768: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1769: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1770: filename, linenum, arg);
1.225 djm 1771: if (*activep && *intptr == -1)
1772: *intptr = value;
1.224 djm 1773: break;
1774:
1.229 djm 1775: case oUpdateHostkeys:
1776: intptr = &options->update_hostkeys;
1.232 djm 1777: multistate_ptr = multistate_yesnoask;
1778: goto parse_multistate;
1.229 djm 1779:
1.230 djm 1780: case oHostbasedKeyTypes:
1781: charptr = &options->hostbased_key_types;
1.238 markus 1782: goto parse_keytypes;
1783:
1784: case oPubkeyAcceptedKeyTypes:
1785: charptr = &options->pubkey_key_types;
1786: goto parse_keytypes;
1.230 djm 1787:
1.246 jcs 1788: case oAddKeysToAgent:
1789: intptr = &options->add_keys_to_agent;
1790: multistate_ptr = multistate_yesnoaskconfirm;
1791: goto parse_multistate;
1792:
1.253 markus 1793: case oIdentityAgent:
1794: charptr = &options->identity_agent;
1.299 djm 1795: arg = strdelim(&s);
1796: if (!arg || *arg == '\0')
1797: fatal("%.200s line %d: Missing argument.",
1798: filename, linenum);
1.319 djm 1799: parse_agent_path:
1.299 djm 1800: /* Extra validation if the string represents an env var. */
1.331 dtucker 1801: if ((arg2 = dollar_expand(&r, arg)) == NULL || r)
1802: fatal("%.200s line %d: Invalid environment expansion "
1803: "%s.", filename, linenum, arg);
1804: free(arg2);
1805: /* check for legacy environment format */
1806: if (arg[0] == '$' && arg[1] != '{' && !valid_env_name(arg + 1)) {
1.299 djm 1807: fatal("%.200s line %d: Invalid environment name %s.",
1808: filename, linenum, arg);
1809: }
1810: if (*activep && *charptr == NULL)
1811: *charptr = xstrdup(arg);
1812: break;
1.253 markus 1813:
1.96 markus 1814: case oDeprecated:
1.98 markus 1815: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1816: filename, linenum, keyword);
1.98 markus 1817: return 0;
1.96 markus 1818:
1.110 jakob 1819: case oUnsupported:
1820: error("%s line %d: Unsupported option \"%s\"",
1821: filename, linenum, keyword);
1822: return 0;
1823:
1.17 markus 1824: default:
1.221 djm 1825: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1826: }
1827:
1828: /* Check that there is no garbage at end of line. */
1.57 djm 1829: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1830: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1831: filename, linenum, arg);
1.39 ho 1832: }
1.17 markus 1833: return 0;
1.1 deraadt 1834: }
1835:
1.19 markus 1836: /*
1837: * Reads the config file and modifies the options accordingly. Options
1838: * should already be initialized before this call. This never returns if
1.89 stevesk 1839: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1840: */
1.89 stevesk 1841: int
1.206 djm 1842: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 1843: const char *original_host, Options *options, int flags,
1844: int *want_final_pass)
1.1 deraadt 1845: {
1.252 djm 1846: int active = 1;
1847:
1848: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 1849: options, flags, &active, want_final_pass, 0);
1.252 djm 1850: }
1851:
1852: #define READCONF_MAX_DEPTH 16
1853: static int
1854: read_config_file_depth(const char *filename, struct passwd *pw,
1855: const char *host, const char *original_host, Options *options,
1.302 djm 1856: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 1857: {
1.17 markus 1858: FILE *f;
1.289 markus 1859: char *line = NULL;
1860: size_t linesize = 0;
1.252 djm 1861: int linenum;
1.17 markus 1862: int bad_options = 0;
1863:
1.252 djm 1864: if (depth < 0 || depth > READCONF_MAX_DEPTH)
1865: fatal("Too many recursive configuration includes");
1866:
1.129 djm 1867: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1868: return 0;
1.129 djm 1869:
1.196 dtucker 1870: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1871: struct stat sb;
1.134 deraadt 1872:
1.131 dtucker 1873: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1874: fatal("fstat %s: %s", filename, strerror(errno));
1875: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1876: (sb.st_mode & 022) != 0))
1.129 djm 1877: fatal("Bad owner or permissions on %s", filename);
1878: }
1.17 markus 1879:
1880: debug("Reading configuration data %.200s", filename);
1881:
1.19 markus 1882: /*
1883: * Mark that we are now processing the options. This flag is turned
1884: * on/off by Host specifications.
1885: */
1.17 markus 1886: linenum = 0;
1.289 markus 1887: while (getline(&line, &linesize, f) != -1) {
1.17 markus 1888: /* Update line number counter. */
1889: linenum++;
1.252 djm 1890: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 1891: line, filename, linenum, activep, flags, want_final_pass,
1892: depth) != 0)
1.17 markus 1893: bad_options++;
1894: }
1.289 markus 1895: free(line);
1.17 markus 1896: fclose(f);
1897: if (bad_options > 0)
1.64 millert 1898: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1899: filename, bad_options);
1.89 stevesk 1900: return 1;
1.1 deraadt 1901: }
1902:
1.218 djm 1903: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1904: int
1905: option_clear_or_none(const char *o)
1906: {
1907: return o == NULL || strcasecmp(o, "none") == 0;
1908: }
1909:
1.19 markus 1910: /*
1911: * Initializes options to special values that indicate that they have not yet
1912: * been set. Read_config_file will only set options with this value. Options
1913: * are processed in the following order: command line, user config file,
1914: * system config file. Last, fill_default_options is called.
1915: */
1.1 deraadt 1916:
1.26 markus 1917: void
1.17 markus 1918: initialize_options(Options * options)
1.1 deraadt 1919: {
1.17 markus 1920: memset(options, 'X', sizeof(*options));
1921: options->forward_agent = -1;
1.319 djm 1922: options->forward_agent_sock_path = NULL;
1.17 markus 1923: options->forward_x11 = -1;
1.123 markus 1924: options->forward_x11_trusted = -1;
1.186 djm 1925: options->forward_x11_timeout = -1;
1.255 dtucker 1926: options->stdio_forward_host = NULL;
1927: options->stdio_forward_port = 0;
1.256 dtucker 1928: options->clear_forwardings = -1;
1.153 markus 1929: options->exit_on_forward_failure = -1;
1.34 markus 1930: options->xauth_location = NULL;
1.220 millert 1931: options->fwd_opts.gateway_ports = -1;
1932: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1933: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 1934: options->pubkey_authentication = -1;
1.78 markus 1935: options->challenge_response_authentication = -1;
1.118 markus 1936: options->gss_authentication = -1;
1937: options->gss_deleg_creds = -1;
1.17 markus 1938: options->password_authentication = -1;
1.48 markus 1939: options->kbd_interactive_authentication = -1;
1940: options->kbd_interactive_devices = NULL;
1.72 markus 1941: options->hostbased_authentication = -1;
1.17 markus 1942: options->batch_mode = -1;
1943: options->check_host_ip = -1;
1944: options->strict_host_key_checking = -1;
1945: options->compression = -1;
1.126 markus 1946: options->tcp_keep_alive = -1;
1.17 markus 1947: options->port = -1;
1.114 djm 1948: options->address_family = -1;
1.17 markus 1949: options->connection_attempts = -1;
1.111 djm 1950: options->connection_timeout = -1;
1.17 markus 1951: options->number_of_password_prompts = -1;
1.25 markus 1952: options->ciphers = NULL;
1.62 markus 1953: options->macs = NULL;
1.189 djm 1954: options->kex_algorithms = NULL;
1.76 markus 1955: options->hostkeyalgorithms = NULL;
1.298 djm 1956: options->ca_sign_algorithms = NULL;
1.17 markus 1957: options->num_identity_files = 0;
1.241 djm 1958: options->num_certificate_files = 0;
1.17 markus 1959: options->hostname = NULL;
1.52 markus 1960: options->host_key_alias = NULL;
1.17 markus 1961: options->proxy_command = NULL;
1.257 djm 1962: options->jump_user = NULL;
1963: options->jump_host = NULL;
1964: options->jump_port = -1;
1965: options->jump_extra = NULL;
1.17 markus 1966: options->user = NULL;
1967: options->escape_char = -1;
1.193 djm 1968: options->num_system_hostfiles = 0;
1969: options->num_user_hostfiles = 0;
1.185 djm 1970: options->local_forwards = NULL;
1.17 markus 1971: options->num_local_forwards = 0;
1.185 djm 1972: options->remote_forwards = NULL;
1.17 markus 1973: options->num_remote_forwards = 0;
1.271 dtucker 1974: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 1975: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1976: options->preferred_authentications = NULL;
1.77 markus 1977: options->bind_address = NULL;
1.282 djm 1978: options->bind_interface = NULL;
1.183 markus 1979: options->pkcs11_provider = NULL;
1.310 djm 1980: options->sk_provider = NULL;
1.101 markus 1981: options->enable_ssh_keysign = - 1;
1.91 markus 1982: options->no_host_authentication_for_localhost = - 1;
1.128 markus 1983: options->identities_only = - 1;
1.105 markus 1984: options->rekey_limit = - 1;
1.198 dtucker 1985: options->rekey_interval = -1;
1.107 jakob 1986: options->verify_host_key_dns = -1;
1.127 markus 1987: options->server_alive_interval = -1;
1988: options->server_alive_count_max = -1;
1.290 djm 1989: options->send_env = NULL;
1.130 djm 1990: options->num_send_env = 0;
1.290 djm 1991: options->setenv = NULL;
1992: options->num_setenv = 0;
1.132 djm 1993: options->control_path = NULL;
1994: options->control_master = -1;
1.187 djm 1995: options->control_persist = -1;
1996: options->control_persist_timeout = 0;
1.136 djm 1997: options->hash_known_hosts = -1;
1.144 reyk 1998: options->tun_open = -1;
1999: options->tun_local = -1;
2000: options->tun_remote = -1;
2001: options->local_command = NULL;
2002: options->permit_local_command = -1;
1.277 bluhm 2003: options->remote_command = NULL;
1.246 jcs 2004: options->add_keys_to_agent = -1;
1.253 markus 2005: options->identity_agent = NULL;
1.167 grunk 2006: options->visual_host_key = -1;
1.190 djm 2007: options->ip_qos_interactive = -1;
2008: options->ip_qos_bulk = -1;
1.192 djm 2009: options->request_tty = -1;
1.205 djm 2010: options->proxy_use_fdpass = -1;
1.199 djm 2011: options->ignored_unknown = NULL;
1.208 djm 2012: options->num_canonical_domains = 0;
2013: options->num_permitted_cnames = 0;
1.209 djm 2014: options->canonicalize_max_dots = -1;
2015: options->canonicalize_fallback_local = -1;
2016: options->canonicalize_hostname = -1;
1.223 djm 2017: options->revoked_host_keys = NULL;
1.224 djm 2018: options->fingerprint_hash = -1;
1.229 djm 2019: options->update_hostkeys = -1;
1.230 djm 2020: options->hostbased_key_types = NULL;
1.238 markus 2021: options->pubkey_key_types = NULL;
1.1 deraadt 2022: }
2023:
1.19 markus 2024: /*
1.218 djm 2025: * A petite version of fill_default_options() that just fills the options
2026: * needed for hostname canonicalization to proceed.
2027: */
2028: void
2029: fill_default_options_for_canonicalization(Options *options)
2030: {
2031: if (options->canonicalize_max_dots == -1)
2032: options->canonicalize_max_dots = 1;
2033: if (options->canonicalize_fallback_local == -1)
2034: options->canonicalize_fallback_local = 1;
2035: if (options->canonicalize_hostname == -1)
2036: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2037: }
2038:
2039: /*
1.19 markus 2040: * Called after processing other sources of option data, this fills those
2041: * options for which no value has been specified with their default values.
2042: */
1.26 markus 2043: void
1.17 markus 2044: fill_default_options(Options * options)
1.1 deraadt 2045: {
1.298 djm 2046: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2047: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.297 djm 2048: int r;
1.292 djm 2049:
1.17 markus 2050: if (options->forward_agent == -1)
1.33 markus 2051: options->forward_agent = 0;
1.17 markus 2052: if (options->forward_x11 == -1)
1.23 markus 2053: options->forward_x11 = 0;
1.123 markus 2054: if (options->forward_x11_trusted == -1)
2055: options->forward_x11_trusted = 0;
1.186 djm 2056: if (options->forward_x11_timeout == -1)
2057: options->forward_x11_timeout = 1200;
1.256 dtucker 2058: /*
2059: * stdio forwarding (-W) changes the default for these but we defer
2060: * setting the values so they can be overridden.
2061: */
1.153 markus 2062: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2063: options->exit_on_forward_failure =
2064: options->stdio_forward_host != NULL ? 1 : 0;
2065: if (options->clear_forwardings == -1)
2066: options->clear_forwardings =
2067: options->stdio_forward_host != NULL ? 1 : 0;
2068: if (options->clear_forwardings == 1)
2069: clear_forwardings(options);
2070:
1.34 markus 2071: if (options->xauth_location == NULL)
1.80 markus 2072: options->xauth_location = _PATH_XAUTH;
1.220 millert 2073: if (options->fwd_opts.gateway_ports == -1)
2074: options->fwd_opts.gateway_ports = 0;
2075: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2076: options->fwd_opts.streamlocal_bind_mask = 0177;
2077: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2078: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2079: if (options->pubkey_authentication == -1)
2080: options->pubkey_authentication = 1;
1.78 markus 2081: if (options->challenge_response_authentication == -1)
1.83 markus 2082: options->challenge_response_authentication = 1;
1.118 markus 2083: if (options->gss_authentication == -1)
1.122 markus 2084: options->gss_authentication = 0;
1.118 markus 2085: if (options->gss_deleg_creds == -1)
2086: options->gss_deleg_creds = 0;
1.17 markus 2087: if (options->password_authentication == -1)
2088: options->password_authentication = 1;
1.48 markus 2089: if (options->kbd_interactive_authentication == -1)
1.59 markus 2090: options->kbd_interactive_authentication = 1;
1.72 markus 2091: if (options->hostbased_authentication == -1)
2092: options->hostbased_authentication = 0;
1.17 markus 2093: if (options->batch_mode == -1)
2094: options->batch_mode = 0;
2095: if (options->check_host_ip == -1)
2096: options->check_host_ip = 1;
2097: if (options->strict_host_key_checking == -1)
1.278 djm 2098: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2099: if (options->compression == -1)
2100: options->compression = 0;
1.126 markus 2101: if (options->tcp_keep_alive == -1)
2102: options->tcp_keep_alive = 1;
1.17 markus 2103: if (options->port == -1)
2104: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2105: if (options->address_family == -1)
2106: options->address_family = AF_UNSPEC;
1.17 markus 2107: if (options->connection_attempts == -1)
1.84 markus 2108: options->connection_attempts = 1;
1.17 markus 2109: if (options->number_of_password_prompts == -1)
2110: options->number_of_password_prompts = 3;
1.76 markus 2111: /* options->hostkeyalgorithms, default set in myproposals.h */
1.246 jcs 2112: if (options->add_keys_to_agent == -1)
2113: options->add_keys_to_agent = 0;
1.17 markus 2114: if (options->num_identity_files == 0) {
1.273 djm 2115: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2116: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2117: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2118: add_identity_file(options, "~/",
1.310 djm 2119: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2120: add_identity_file(options, "~/",
1.273 djm 2121: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2122: add_identity_file(options, "~/",
2123: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2124: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2125: }
1.17 markus 2126: if (options->escape_char == -1)
2127: options->escape_char = '~';
1.193 djm 2128: if (options->num_system_hostfiles == 0) {
2129: options->system_hostfiles[options->num_system_hostfiles++] =
2130: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2131: options->system_hostfiles[options->num_system_hostfiles++] =
2132: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2133: }
1.325 djm 2134: if (options->update_hostkeys == -1)
2135: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.193 djm 2136: if (options->num_user_hostfiles == 0) {
2137: options->user_hostfiles[options->num_user_hostfiles++] =
2138: xstrdup(_PATH_SSH_USER_HOSTFILE);
2139: options->user_hostfiles[options->num_user_hostfiles++] =
2140: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2141: }
1.95 markus 2142: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2143: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2144: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2145: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2146: if (options->no_host_authentication_for_localhost == - 1)
2147: options->no_host_authentication_for_localhost = 0;
1.128 markus 2148: if (options->identities_only == -1)
2149: options->identities_only = 0;
1.101 markus 2150: if (options->enable_ssh_keysign == -1)
2151: options->enable_ssh_keysign = 0;
1.105 markus 2152: if (options->rekey_limit == -1)
2153: options->rekey_limit = 0;
1.198 dtucker 2154: if (options->rekey_interval == -1)
2155: options->rekey_interval = 0;
1.107 jakob 2156: if (options->verify_host_key_dns == -1)
2157: options->verify_host_key_dns = 0;
1.127 markus 2158: if (options->server_alive_interval == -1)
2159: options->server_alive_interval = 0;
2160: if (options->server_alive_count_max == -1)
2161: options->server_alive_count_max = 3;
1.132 djm 2162: if (options->control_master == -1)
2163: options->control_master = 0;
1.187 djm 2164: if (options->control_persist == -1) {
2165: options->control_persist = 0;
2166: options->control_persist_timeout = 0;
2167: }
1.136 djm 2168: if (options->hash_known_hosts == -1)
2169: options->hash_known_hosts = 0;
1.144 reyk 2170: if (options->tun_open == -1)
1.145 reyk 2171: options->tun_open = SSH_TUNMODE_NO;
2172: if (options->tun_local == -1)
2173: options->tun_local = SSH_TUNID_ANY;
2174: if (options->tun_remote == -1)
2175: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2176: if (options->permit_local_command == -1)
2177: options->permit_local_command = 0;
1.167 grunk 2178: if (options->visual_host_key == -1)
2179: options->visual_host_key = 0;
1.190 djm 2180: if (options->ip_qos_interactive == -1)
1.284 job 2181: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2182: if (options->ip_qos_bulk == -1)
1.284 job 2183: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2184: if (options->request_tty == -1)
2185: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2186: if (options->proxy_use_fdpass == -1)
2187: options->proxy_use_fdpass = 0;
1.209 djm 2188: if (options->canonicalize_max_dots == -1)
2189: options->canonicalize_max_dots = 1;
2190: if (options->canonicalize_fallback_local == -1)
2191: options->canonicalize_fallback_local = 1;
2192: if (options->canonicalize_hostname == -1)
2193: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2194: if (options->fingerprint_hash == -1)
2195: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2196: if (options->sk_provider == NULL)
1.314 djm 2197: options->sk_provider = xstrdup("internal");
1.292 djm 2198:
2199: /* Expand KEX name lists */
2200: all_cipher = cipher_alg_list(',', 0);
2201: all_mac = mac_alg_list(',');
2202: all_kex = kex_alg_list(',');
2203: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2204: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2205: /* remove unsupported algos from default lists */
1.332 djm 2206: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2207: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2208: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2209: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2210: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2211: #define ASSEMBLE(what, defaults, all) \
2212: do { \
2213: if ((r = kex_assemble_names(&options->what, \
2214: defaults, all)) != 0) \
2215: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
2216: } while (0)
1.320 dtucker 2217: ASSEMBLE(ciphers, def_cipher, all_cipher);
2218: ASSEMBLE(macs, def_mac, all_mac);
2219: ASSEMBLE(kex_algorithms, def_kex, all_kex);
2220: ASSEMBLE(hostbased_key_types, def_key, all_key);
2221: ASSEMBLE(pubkey_key_types, def_key, all_key);
2222: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2223: #undef ASSEMBLE
1.292 djm 2224: free(all_cipher);
2225: free(all_mac);
2226: free(all_kex);
2227: free(all_key);
1.298 djm 2228: free(all_sig);
1.320 dtucker 2229: free(def_cipher);
2230: free(def_mac);
2231: free(def_kex);
2232: kex_default_pk_alg_filtered = def_key; /* save for later use */
2233: free(def_sig);
1.224 djm 2234:
1.207 djm 2235: #define CLEAR_ON_NONE(v) \
2236: do { \
1.218 djm 2237: if (option_clear_or_none(v)) { \
1.207 djm 2238: free(v); \
2239: v = NULL; \
2240: } \
2241: } while(0)
2242: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2243: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2244: CLEAR_ON_NONE(options->proxy_command);
2245: CLEAR_ON_NONE(options->control_path);
1.223 djm 2246: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2247: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2248: CLEAR_ON_NONE(options->sk_provider);
1.287 djm 2249: if (options->jump_host != NULL &&
2250: strcmp(options->jump_host, "none") == 0 &&
2251: options->jump_port == 0 && options->jump_user == NULL) {
2252: free(options->jump_host);
2253: options->jump_host = NULL;
2254: }
1.254 markus 2255: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2256: /* options->user will be set in the main program if appropriate */
2257: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2258: /* options->host_key_alias should not be set by default */
1.67 markus 2259: /* options->preferred_authentications will be set in ssh */
1.135 djm 2260: }
2261:
1.220 millert 2262: struct fwdarg {
2263: char *arg;
2264: int ispath;
2265: };
2266:
2267: /*
2268: * parse_fwd_field
2269: * parses the next field in a port forwarding specification.
2270: * sets fwd to the parsed field and advances p past the colon
2271: * or sets it to NULL at end of string.
2272: * returns 0 on success, else non-zero.
2273: */
2274: static int
2275: parse_fwd_field(char **p, struct fwdarg *fwd)
2276: {
2277: char *ep, *cp = *p;
2278: int ispath = 0;
2279:
2280: if (*cp == '\0') {
2281: *p = NULL;
2282: return -1; /* end of string */
2283: }
2284:
2285: /*
2286: * A field escaped with square brackets is used literally.
2287: * XXX - allow ']' to be escaped via backslash?
2288: */
2289: if (*cp == '[') {
2290: /* find matching ']' */
2291: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2292: if (*ep == '/')
2293: ispath = 1;
2294: }
2295: /* no matching ']' or not at end of field. */
2296: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2297: return -1;
2298: /* NUL terminate the field and advance p past the colon */
2299: *ep++ = '\0';
2300: if (*ep != '\0')
2301: *ep++ = '\0';
2302: fwd->arg = cp + 1;
2303: fwd->ispath = ispath;
2304: *p = ep;
2305: return 0;
2306: }
2307:
2308: for (cp = *p; *cp != '\0'; cp++) {
2309: switch (*cp) {
2310: case '\\':
2311: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2312: if (*cp == '\0')
2313: return -1;
1.220 millert 2314: break;
2315: case '/':
2316: ispath = 1;
2317: break;
2318: case ':':
2319: *cp++ = '\0';
2320: goto done;
2321: }
2322: }
2323: done:
2324: fwd->arg = *p;
2325: fwd->ispath = ispath;
2326: *p = cp;
2327: return 0;
2328: }
2329:
1.135 djm 2330: /*
2331: * parse_forward
2332: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2333: * dynamicfwd == 0
1.220 millert 2334: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2335: * listenpath:connectpath
1.168 stevesk 2336: * dynamicfwd == 1
2337: * [listenhost:]listenport
1.135 djm 2338: * returns number of arguments parsed or zero on error
2339: */
2340: int
1.220 millert 2341: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2342: {
1.220 millert 2343: struct fwdarg fwdargs[4];
2344: char *p, *cp;
1.331 dtucker 2345: int i, err;
1.135 djm 2346:
1.220 millert 2347: memset(fwd, 0, sizeof(*fwd));
2348: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2349:
1.331 dtucker 2350: /*
2351: * We expand environment variables before checking if we think they're
2352: * paths so that if ${VAR} expands to a fully qualified path it is
2353: * treated as a path.
2354: */
2355: cp = p = dollar_expand(&err, fwdspec);
2356: if (p == NULL || err)
2357: return 0;
1.135 djm 2358:
2359: /* skip leading spaces */
1.214 deraadt 2360: while (isspace((u_char)*cp))
1.135 djm 2361: cp++;
2362:
1.220 millert 2363: for (i = 0; i < 4; ++i) {
2364: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2365: break;
1.220 millert 2366: }
1.135 djm 2367:
1.170 stevesk 2368: /* Check for trailing garbage */
1.220 millert 2369: if (cp != NULL && *cp != '\0') {
1.135 djm 2370: i = 0; /* failure */
1.220 millert 2371: }
1.135 djm 2372:
2373: switch (i) {
1.168 stevesk 2374: case 1:
1.220 millert 2375: if (fwdargs[0].ispath) {
2376: fwd->listen_path = xstrdup(fwdargs[0].arg);
2377: fwd->listen_port = PORT_STREAMLOCAL;
2378: } else {
2379: fwd->listen_host = NULL;
2380: fwd->listen_port = a2port(fwdargs[0].arg);
2381: }
1.168 stevesk 2382: fwd->connect_host = xstrdup("socks");
2383: break;
2384:
2385: case 2:
1.220 millert 2386: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2387: fwd->listen_path = xstrdup(fwdargs[0].arg);
2388: fwd->listen_port = PORT_STREAMLOCAL;
2389: fwd->connect_path = xstrdup(fwdargs[1].arg);
2390: fwd->connect_port = PORT_STREAMLOCAL;
2391: } else if (fwdargs[1].ispath) {
2392: fwd->listen_host = NULL;
2393: fwd->listen_port = a2port(fwdargs[0].arg);
2394: fwd->connect_path = xstrdup(fwdargs[1].arg);
2395: fwd->connect_port = PORT_STREAMLOCAL;
2396: } else {
2397: fwd->listen_host = xstrdup(fwdargs[0].arg);
2398: fwd->listen_port = a2port(fwdargs[1].arg);
2399: fwd->connect_host = xstrdup("socks");
2400: }
1.168 stevesk 2401: break;
2402:
1.135 djm 2403: case 3:
1.220 millert 2404: if (fwdargs[0].ispath) {
2405: fwd->listen_path = xstrdup(fwdargs[0].arg);
2406: fwd->listen_port = PORT_STREAMLOCAL;
2407: fwd->connect_host = xstrdup(fwdargs[1].arg);
2408: fwd->connect_port = a2port(fwdargs[2].arg);
2409: } else if (fwdargs[2].ispath) {
2410: fwd->listen_host = xstrdup(fwdargs[0].arg);
2411: fwd->listen_port = a2port(fwdargs[1].arg);
2412: fwd->connect_path = xstrdup(fwdargs[2].arg);
2413: fwd->connect_port = PORT_STREAMLOCAL;
2414: } else {
2415: fwd->listen_host = NULL;
2416: fwd->listen_port = a2port(fwdargs[0].arg);
2417: fwd->connect_host = xstrdup(fwdargs[1].arg);
2418: fwd->connect_port = a2port(fwdargs[2].arg);
2419: }
1.135 djm 2420: break;
2421:
2422: case 4:
1.220 millert 2423: fwd->listen_host = xstrdup(fwdargs[0].arg);
2424: fwd->listen_port = a2port(fwdargs[1].arg);
2425: fwd->connect_host = xstrdup(fwdargs[2].arg);
2426: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2427: break;
2428: default:
2429: i = 0; /* failure */
2430: }
2431:
1.202 djm 2432: free(p);
1.135 djm 2433:
1.168 stevesk 2434: if (dynamicfwd) {
2435: if (!(i == 1 || i == 2))
2436: goto fail_free;
2437: } else {
1.220 millert 2438: if (!(i == 3 || i == 4)) {
2439: if (fwd->connect_path == NULL &&
2440: fwd->listen_path == NULL)
2441: goto fail_free;
2442: }
2443: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2444: goto fail_free;
2445: }
2446:
1.220 millert 2447: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2448: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2449: goto fail_free;
2450: if (fwd->connect_host != NULL &&
2451: strlen(fwd->connect_host) >= NI_MAXHOST)
2452: goto fail_free;
1.220 millert 2453: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2454: if (fwd->connect_path != NULL &&
2455: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2456: goto fail_free;
1.176 djm 2457: if (fwd->listen_host != NULL &&
2458: strlen(fwd->listen_host) >= NI_MAXHOST)
2459: goto fail_free;
1.220 millert 2460: if (fwd->listen_path != NULL &&
2461: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2462: goto fail_free;
1.135 djm 2463:
2464: return (i);
2465:
2466: fail_free:
1.202 djm 2467: free(fwd->connect_host);
2468: fwd->connect_host = NULL;
1.220 millert 2469: free(fwd->connect_path);
2470: fwd->connect_path = NULL;
1.202 djm 2471: free(fwd->listen_host);
2472: fwd->listen_host = NULL;
1.220 millert 2473: free(fwd->listen_path);
2474: fwd->listen_path = NULL;
1.135 djm 2475: return (0);
1.221 djm 2476: }
2477:
1.257 djm 2478: int
2479: parse_jump(const char *s, Options *o, int active)
2480: {
2481: char *orig, *sdup, *cp;
2482: char *host = NULL, *user = NULL;
1.258 naddy 2483: int ret = -1, port = -1, first;
1.257 djm 2484:
2485: active &= o->proxy_command == NULL && o->jump_host == NULL;
2486:
2487: orig = sdup = xstrdup(s);
1.258 naddy 2488: first = active;
1.259 djm 2489: do {
1.287 djm 2490: if (strcasecmp(s, "none") == 0)
2491: break;
1.259 djm 2492: if ((cp = strrchr(sdup, ',')) == NULL)
2493: cp = sdup; /* last */
2494: else
2495: *cp++ = '\0';
2496:
1.258 naddy 2497: if (first) {
1.257 djm 2498: /* First argument and configuration is active */
1.280 millert 2499: if (parse_ssh_uri(cp, &user, &host, &port) == -1 ||
2500: parse_user_host_port(cp, &user, &host, &port) != 0)
1.257 djm 2501: goto out;
2502: } else {
2503: /* Subsequent argument or inactive configuration */
1.280 millert 2504: if (parse_ssh_uri(cp, NULL, NULL, NULL) == -1 ||
2505: parse_user_host_port(cp, NULL, NULL, NULL) != 0)
1.257 djm 2506: goto out;
2507: }
1.258 naddy 2508: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2509: } while (cp != sdup);
1.257 djm 2510: /* success */
1.258 naddy 2511: if (active) {
1.287 djm 2512: if (strcasecmp(s, "none") == 0) {
2513: o->jump_host = xstrdup("none");
2514: o->jump_port = 0;
2515: } else {
2516: o->jump_user = user;
2517: o->jump_host = host;
2518: o->jump_port = port;
2519: o->proxy_command = xstrdup("none");
2520: user = host = NULL;
2521: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2522: o->jump_extra = xstrdup(s);
2523: o->jump_extra[cp - s] = '\0';
2524: }
1.259 djm 2525: }
1.258 naddy 2526: }
1.257 djm 2527: ret = 0;
2528: out:
1.258 naddy 2529: free(orig);
1.257 djm 2530: free(user);
2531: free(host);
2532: return ret;
1.280 millert 2533: }
2534:
2535: int
2536: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2537: {
2538: char *path;
2539: int r;
2540:
2541: r = parse_uri("ssh", uri, userp, hostp, portp, &path);
2542: if (r == 0 && path != NULL)
2543: r = -1; /* path not allowed */
2544: return r;
1.257 djm 2545: }
2546:
1.221 djm 2547: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2548: static const char *
2549: fmt_multistate_int(int val, const struct multistate *m)
2550: {
2551: u_int i;
2552:
2553: for (i = 0; m[i].key != NULL; i++) {
2554: if (m[i].value == val)
2555: return m[i].key;
2556: }
2557: return "UNKNOWN";
2558: }
2559:
2560: static const char *
2561: fmt_intarg(OpCodes code, int val)
2562: {
2563: if (val == -1)
2564: return "unset";
2565: switch (code) {
2566: case oAddressFamily:
2567: return fmt_multistate_int(val, multistate_addressfamily);
2568: case oVerifyHostKeyDNS:
1.232 djm 2569: case oUpdateHostkeys:
1.221 djm 2570: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 2571: case oStrictHostKeyChecking:
2572: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 2573: case oControlMaster:
2574: return fmt_multistate_int(val, multistate_controlmaster);
2575: case oTunnel:
2576: return fmt_multistate_int(val, multistate_tunnel);
2577: case oRequestTTY:
2578: return fmt_multistate_int(val, multistate_requesttty);
2579: case oCanonicalizeHostname:
2580: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 2581: case oAddKeysToAgent:
2582: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 2583: case oFingerprintHash:
2584: return ssh_digest_alg_name(val);
1.221 djm 2585: default:
2586: switch (val) {
2587: case 0:
2588: return "no";
2589: case 1:
2590: return "yes";
2591: default:
2592: return "UNKNOWN";
2593: }
2594: }
2595: }
2596:
2597: static const char *
2598: lookup_opcode_name(OpCodes code)
2599: {
2600: u_int i;
2601:
2602: for (i = 0; keywords[i].name != NULL; i++)
2603: if (keywords[i].opcode == code)
2604: return(keywords[i].name);
2605: return "UNKNOWN";
2606: }
2607:
2608: static void
2609: dump_cfg_int(OpCodes code, int val)
2610: {
2611: printf("%s %d\n", lookup_opcode_name(code), val);
2612: }
2613:
2614: static void
2615: dump_cfg_fmtint(OpCodes code, int val)
2616: {
2617: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2618: }
2619:
2620: static void
2621: dump_cfg_string(OpCodes code, const char *val)
2622: {
2623: if (val == NULL)
2624: return;
2625: printf("%s %s\n", lookup_opcode_name(code), val);
2626: }
2627:
2628: static void
2629: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2630: {
2631: u_int i;
2632:
2633: for (i = 0; i < count; i++)
2634: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2635: }
2636:
2637: static void
2638: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2639: {
2640: u_int i;
2641:
2642: printf("%s", lookup_opcode_name(code));
2643: for (i = 0; i < count; i++)
2644: printf(" %s", vals[i]);
2645: printf("\n");
2646: }
2647:
2648: static void
2649: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2650: {
2651: const struct Forward *fwd;
2652: u_int i;
2653:
2654: /* oDynamicForward */
2655: for (i = 0; i < count; i++) {
2656: fwd = &fwds[i];
1.265 djm 2657: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 2658: strcmp(fwd->connect_host, "socks") != 0)
2659: continue;
1.265 djm 2660: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 2661: strcmp(fwd->connect_host, "socks") == 0)
2662: continue;
2663: printf("%s", lookup_opcode_name(code));
2664: if (fwd->listen_port == PORT_STREAMLOCAL)
2665: printf(" %s", fwd->listen_path);
2666: else if (fwd->listen_host == NULL)
2667: printf(" %d", fwd->listen_port);
2668: else {
2669: printf(" [%s]:%d",
2670: fwd->listen_host, fwd->listen_port);
2671: }
2672: if (code != oDynamicForward) {
2673: if (fwd->connect_port == PORT_STREAMLOCAL)
2674: printf(" %s", fwd->connect_path);
2675: else if (fwd->connect_host == NULL)
2676: printf(" %d", fwd->connect_port);
2677: else {
2678: printf(" [%s]:%d",
2679: fwd->connect_host, fwd->connect_port);
2680: }
2681: }
2682: printf("\n");
2683: }
2684: }
2685:
2686: void
2687: dump_client_config(Options *o, const char *host)
2688: {
1.326 djm 2689: int i, r;
2690: char buf[8], *all_key;
2691:
2692: /*
2693: * Expand HostKeyAlgorithms name lists. This isn't handled in
2694: * fill_default_options() like the other algorithm lists because
2695: * the host key algorithms are by default dynamically chosen based
2696: * on the host's keys found in known_hosts.
2697: */
2698: all_key = sshkey_alg_list(0, 0, 1, ',');
2699: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
2700: all_key)) != 0)
2701: fatal("%s: expand HostKeyAlgorithms: %s", __func__, ssh_err(r));
2702: free(all_key);
1.240 djm 2703:
1.221 djm 2704: /* Most interesting options first: user, host, port */
2705: dump_cfg_string(oUser, o->user);
1.306 jmc 2706: dump_cfg_string(oHostname, host);
1.221 djm 2707: dump_cfg_int(oPort, o->port);
2708:
2709: /* Flag options */
1.285 djm 2710: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
1.221 djm 2711: dump_cfg_fmtint(oAddressFamily, o->address_family);
2712: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2713: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2714: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2715: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2716: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2717: dump_cfg_fmtint(oCompression, o->compression);
2718: dump_cfg_fmtint(oControlMaster, o->control_master);
2719: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 2720: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 2721: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2722: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2723: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2724: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2725: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2726: #ifdef GSSAPI
2727: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2728: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2729: #endif /* GSSAPI */
2730: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2731: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2732: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2733: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2734: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2735: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2736: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2737: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2738: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2739: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2740: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2741: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2742: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2743: dump_cfg_fmtint(oTunnel, o->tun_open);
2744: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2745: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2746: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2747:
2748: /* Integer options */
2749: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2750: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2751: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2752: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2753: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2754: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2755:
2756: /* String options */
2757: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 2758: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 2759: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 2760: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 2761: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 2762: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2763: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.253 markus 2764: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 2765: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 2766: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 2767: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
2768: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 2769: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 2770: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 2771: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 2772: dump_cfg_string(oMacs, o->macs);
1.266 djm 2773: #ifdef ENABLE_PKCS11
1.221 djm 2774: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 2775: #endif
1.310 djm 2776: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 2777: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.242 djm 2778: dump_cfg_string(oPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.230 djm 2779: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2780: dump_cfg_string(oXAuthLocation, o->xauth_location);
2781:
1.230 djm 2782: /* Forwards */
1.221 djm 2783: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2784: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2785: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2786:
2787: /* String array options */
2788: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2789: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 2790: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 2791: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2792: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2793: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 2794: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.221 djm 2795:
2796: /* Special cases */
1.319 djm 2797:
2798: /* oForwardAgent */
2799: if (o->forward_agent_sock_path == NULL)
2800: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2801: else
2802: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 2803:
2804: /* oConnectTimeout */
2805: if (o->connection_timeout == -1)
2806: printf("connecttimeout none\n");
2807: else
2808: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2809:
2810: /* oTunnelDevice */
2811: printf("tunneldevice");
2812: if (o->tun_local == SSH_TUNID_ANY)
2813: printf(" any");
2814: else
2815: printf(" %d", o->tun_local);
2816: if (o->tun_remote == SSH_TUNID_ANY)
2817: printf(":any");
2818: else
2819: printf(":%d", o->tun_remote);
2820: printf("\n");
2821:
2822: /* oCanonicalizePermittedCNAMEs */
2823: if ( o->num_permitted_cnames > 0) {
2824: printf("canonicalizePermittedcnames");
2825: for (i = 0; i < o->num_permitted_cnames; i++) {
2826: printf(" %s:%s", o->permitted_cnames[i].source_list,
2827: o->permitted_cnames[i].target_list);
2828: }
2829: printf("\n");
2830: }
2831:
2832: /* oControlPersist */
2833: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2834: dump_cfg_fmtint(oControlPersist, o->control_persist);
2835: else
2836: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2837:
2838: /* oEscapeChar */
2839: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2840: printf("escapechar none\n");
2841: else {
1.257 djm 2842: vis(buf, o->escape_char, VIS_WHITE, 0);
2843: printf("escapechar %s\n", buf);
1.221 djm 2844: }
2845:
2846: /* oIPQoS */
2847: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2848: printf("%s\n", iptos2str(o->ip_qos_bulk));
2849:
2850: /* oRekeyLimit */
1.249 dtucker 2851: printf("rekeylimit %llu %d\n",
2852: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 2853:
2854: /* oStreamLocalBindMask */
2855: printf("streamlocalbindmask 0%o\n",
2856: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 2857:
2858: /* oLogFacility */
2859: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 2860:
2861: /* oProxyCommand / oProxyJump */
2862: if (o->jump_host == NULL)
2863: dump_cfg_string(oProxyCommand, o->proxy_command);
2864: else {
2865: /* Check for numeric addresses */
2866: i = strchr(o->jump_host, ':') != NULL ||
2867: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
2868: snprintf(buf, sizeof(buf), "%d", o->jump_port);
2869: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 2870: /* optional additional jump spec */
2871: o->jump_extra == NULL ? "" : o->jump_extra,
2872: o->jump_extra == NULL ? "" : ",",
1.257 djm 2873: /* optional user */
2874: o->jump_user == NULL ? "" : o->jump_user,
2875: o->jump_user == NULL ? "" : "@",
2876: /* opening [ if hostname is numeric */
2877: i ? "[" : "",
2878: /* mandatory hostname */
2879: o->jump_host,
2880: /* closing ] if hostname is numeric */
2881: i ? "]" : "",
2882: /* optional port number */
2883: o->jump_port <= 0 ? "" : ":",
1.259 djm 2884: o->jump_port <= 0 ? "" : buf);
1.257 djm 2885: }
1.1 deraadt 2886: }
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