Annotation of src/usr.bin/ssh/readconf.c, Revision 1.319
1.319 ! djm 1: /* $OpenBSD: readconf.c,v 1.318 2019/12/20 02:42:42 dtucker Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
21: #include <netinet/in.h>
1.190 djm 22: #include <netinet/ip.h>
1.148 stevesk 23:
24: #include <ctype.h>
1.154 stevesk 25: #include <errno.h>
1.206 djm 26: #include <fcntl.h>
1.252 djm 27: #include <glob.h>
1.155 stevesk 28: #include <netdb.h>
1.206 djm 29: #include <paths.h>
30: #include <pwd.h>
1.159 deraadt 31: #include <signal.h>
1.158 stevesk 32: #include <stdio.h>
1.157 stevesk 33: #include <string.h>
1.312 deraadt 34: #include <stdarg.h>
1.156 stevesk 35: #include <unistd.h>
1.228 deraadt 36: #include <limits.h>
1.200 dtucker 37: #include <util.h>
1.221 djm 38: #include <vis.h>
1.1 deraadt 39:
1.159 deraadt 40: #include "xmalloc.h"
1.1 deraadt 41: #include "ssh.h"
1.297 djm 42: #include "ssherr.h"
1.25 markus 43: #include "compat.h"
1.58 markus 44: #include "cipher.h"
1.55 markus 45: #include "pathnames.h"
1.58 markus 46: #include "log.h"
1.227 djm 47: #include "sshkey.h"
1.220 millert 48: #include "misc.h"
1.58 markus 49: #include "readconf.h"
50: #include "match.h"
1.62 markus 51: #include "kex.h"
52: #include "mac.h"
1.206 djm 53: #include "uidswap.h"
1.221 djm 54: #include "myproposal.h"
1.224 djm 55: #include "digest.h"
1.1 deraadt 56:
57: /* Format of the configuration file:
58:
59: # Configuration data is parsed as follows:
60: # 1. command line options
61: # 2. user-specific file
62: # 3. system-wide file
63: # Any configuration value is only changed the first time it is set.
64: # Thus, host-specific definitions should be at the beginning of the
65: # configuration file, and defaults at the end.
66:
67: # Host-specific declarations. These may override anything above. A single
68: # host may match multiple declarations; these are processed in the order
69: # that they are given in.
70:
71: Host *.ngs.fi ngs.fi
1.96 markus 72: User foo
1.1 deraadt 73:
74: Host fake.com
1.306 jmc 75: Hostname another.host.name.real.org
1.1 deraadt 76: User blaah
77: Port 34289
78: ForwardX11 no
79: ForwardAgent no
80:
81: Host books.com
82: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 83: Ciphers 3des-cbc
1.1 deraadt 84:
85: Host fascist.blob.com
86: Port 23123
87: User tylonen
88: PasswordAuthentication no
89:
90: Host puukko.hut.fi
91: User t35124p
92: ProxyCommand ssh-proxy %h %p
93:
94: Host *.fr
1.96 markus 95: PublicKeyAuthentication no
1.1 deraadt 96:
97: Host *.su
1.266 djm 98: Ciphers aes128-ctr
1.1 deraadt 99: PasswordAuthentication no
100:
1.144 reyk 101: Host vpn.fake.com
102: Tunnel yes
103: TunnelDevice 3
104:
1.1 deraadt 105: # Defaults for various options
106: Host *
107: ForwardAgent no
1.50 markus 108: ForwardX11 no
1.1 deraadt 109: PasswordAuthentication yes
110: StrictHostKeyChecking yes
1.126 markus 111: TcpKeepAlive no
1.1 deraadt 112: IdentityFile ~/.ssh/identity
113: Port 22
114: EscapeChar ~
115:
116: */
117:
1.252 djm 118: static int read_config_file_depth(const char *filename, struct passwd *pw,
119: const char *host, const char *original_host, Options *options,
1.302 djm 120: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 121: static int process_config_line_depth(Options *options, struct passwd *pw,
122: const char *host, const char *original_host, char *line,
1.302 djm 123: const char *filename, int linenum, int *activep, int flags,
124: int *want_final_pass, int depth);
1.252 djm 125:
1.1 deraadt 126: /* Keyword tokens. */
127:
1.17 markus 128: typedef enum {
129: oBadOption,
1.252 djm 130: oHost, oMatch, oInclude,
1.186 djm 131: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
132: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 133: oPasswordAuthentication,
1.59 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:
1.19 markus 303: /*
304: * Adds a local TCP/IP port forward to options. Never returns if there is an
305: * error.
306: */
1.1 deraadt 307:
1.26 markus 308: void
1.220 millert 309: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 310: {
1.220 millert 311: struct Forward *fwd;
1.251 djm 312: int i;
1.185 djm 313:
1.251 djm 314: /* Don't add duplicates */
315: for (i = 0; i < options->num_local_forwards; i++) {
316: if (forward_equals(newfwd, options->local_forwards + i))
317: return;
318: }
1.234 deraadt 319: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 320: options->num_local_forwards + 1,
321: sizeof(*options->local_forwards));
1.17 markus 322: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 323:
1.172 stevesk 324: fwd->listen_host = newfwd->listen_host;
1.135 djm 325: fwd->listen_port = newfwd->listen_port;
1.220 millert 326: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 327: fwd->connect_host = newfwd->connect_host;
1.135 djm 328: fwd->connect_port = newfwd->connect_port;
1.220 millert 329: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 330: }
331:
1.19 markus 332: /*
333: * Adds a remote TCP/IP port forward to options. Never returns if there is
334: * an error.
335: */
1.1 deraadt 336:
1.26 markus 337: void
1.220 millert 338: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 339: {
1.220 millert 340: struct Forward *fwd;
1.251 djm 341: int i;
1.185 djm 342:
1.251 djm 343: /* Don't add duplicates */
344: for (i = 0; i < options->num_remote_forwards; i++) {
345: if (forward_equals(newfwd, options->remote_forwards + i))
346: return;
347: }
1.234 deraadt 348: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 349: options->num_remote_forwards + 1,
350: sizeof(*options->remote_forwards));
1.17 markus 351: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 352:
1.172 stevesk 353: fwd->listen_host = newfwd->listen_host;
1.135 djm 354: fwd->listen_port = newfwd->listen_port;
1.220 millert 355: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 356: fwd->connect_host = newfwd->connect_host;
1.135 djm 357: fwd->connect_port = newfwd->connect_port;
1.220 millert 358: fwd->connect_path = newfwd->connect_path;
1.194 markus 359: fwd->handle = newfwd->handle;
1.184 markus 360: fwd->allocated_port = 0;
1.1 deraadt 361: }
362:
1.90 stevesk 363: static void
364: clear_forwardings(Options *options)
365: {
366: int i;
367:
1.135 djm 368: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 369: free(options->local_forwards[i].listen_host);
1.220 millert 370: free(options->local_forwards[i].listen_path);
1.202 djm 371: free(options->local_forwards[i].connect_host);
1.220 millert 372: free(options->local_forwards[i].connect_path);
1.135 djm 373: }
1.185 djm 374: if (options->num_local_forwards > 0) {
1.202 djm 375: free(options->local_forwards);
1.185 djm 376: options->local_forwards = NULL;
377: }
1.90 stevesk 378: options->num_local_forwards = 0;
1.135 djm 379: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 380: free(options->remote_forwards[i].listen_host);
1.220 millert 381: free(options->remote_forwards[i].listen_path);
1.202 djm 382: free(options->remote_forwards[i].connect_host);
1.220 millert 383: free(options->remote_forwards[i].connect_path);
1.135 djm 384: }
1.185 djm 385: if (options->num_remote_forwards > 0) {
1.202 djm 386: free(options->remote_forwards);
1.185 djm 387: options->remote_forwards = NULL;
388: }
1.90 stevesk 389: options->num_remote_forwards = 0;
1.145 reyk 390: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 391: }
392:
1.195 dtucker 393: void
1.241 djm 394: add_certificate_file(Options *options, const char *path, int userprovided)
395: {
396: int i;
397:
398: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
399: fatal("Too many certificate files specified (max %d)",
400: SSH_MAX_CERTIFICATE_FILES);
401:
402: /* Avoid registering duplicates */
403: for (i = 0; i < options->num_certificate_files; i++) {
404: if (options->certificate_file_userprovided[i] == userprovided &&
405: strcmp(options->certificate_files[i], path) == 0) {
406: debug2("%s: ignoring duplicate key %s", __func__, path);
407: return;
408: }
409: }
410:
411: options->certificate_file_userprovided[options->num_certificate_files] =
412: userprovided;
413: options->certificate_files[options->num_certificate_files++] =
414: xstrdup(path);
415: }
416:
417: void
1.195 dtucker 418: add_identity_file(Options *options, const char *dir, const char *filename,
419: int userprovided)
420: {
421: char *path;
1.219 djm 422: int i;
1.195 dtucker 423:
424: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
425: fatal("Too many identity files specified (max %d)",
426: SSH_MAX_IDENTITY_FILES);
427:
428: if (dir == NULL) /* no dir, filename is absolute */
429: path = xstrdup(filename);
1.276 djm 430: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
431: fatal("Identity file path %s too long", path);
1.219 djm 432:
433: /* Avoid registering duplicates */
434: for (i = 0; i < options->num_identity_files; i++) {
435: if (options->identity_file_userprovided[i] == userprovided &&
436: strcmp(options->identity_files[i], path) == 0) {
437: debug2("%s: ignoring duplicate key %s", __func__, path);
438: free(path);
439: return;
440: }
441: }
1.195 dtucker 442:
443: options->identity_file_userprovided[options->num_identity_files] =
444: userprovided;
445: options->identity_files[options->num_identity_files++] = path;
446: }
447:
1.206 djm 448: int
449: default_ssh_port(void)
450: {
451: static int port;
452: struct servent *sp;
453:
454: if (port == 0) {
455: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
456: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
457: }
458: return port;
459: }
460:
461: /*
462: * Execute a command in a shell.
463: * Return its exit status or -1 on abnormal exit.
464: */
465: static int
466: execute_in_shell(const char *cmd)
467: {
1.243 dtucker 468: char *shell;
1.206 djm 469: pid_t pid;
470: int devnull, status;
471:
472: if ((shell = getenv("SHELL")) == NULL)
473: shell = _PATH_BSHELL;
1.308 djm 474:
475: if (access(shell, X_OK) == -1) {
476: fatal("Shell \"%s\" is not executable: %s",
477: shell, strerror(errno));
478: }
1.206 djm 479:
480: /* Need this to redirect subprocess stdin/out */
481: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
482: fatal("open(/dev/null): %s", strerror(errno));
483:
484: debug("Executing command: '%.500s'", cmd);
485:
486: /* Fork and execute the command. */
487: if ((pid = fork()) == 0) {
1.245 djm 488: char *argv[4];
1.206 djm 489:
490: /* Redirect child stdin and stdout. Leave stderr */
491: if (dup2(devnull, STDIN_FILENO) == -1)
492: fatal("dup2: %s", strerror(errno));
493: if (dup2(devnull, STDOUT_FILENO) == -1)
494: fatal("dup2: %s", strerror(errno));
495: if (devnull > STDERR_FILENO)
496: close(devnull);
497: closefrom(STDERR_FILENO + 1);
1.245 djm 498:
499: argv[0] = shell;
500: argv[1] = "-c";
501: argv[2] = xstrdup(cmd);
502: argv[3] = NULL;
1.206 djm 503:
504: execv(argv[0], argv);
505: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
506: /* Die with signal to make this error apparent to parent. */
507: signal(SIGTERM, SIG_DFL);
508: kill(getpid(), SIGTERM);
509: _exit(1);
510: }
511: /* Parent. */
1.307 deraadt 512: if (pid == -1)
1.206 djm 513: fatal("%s: fork: %.100s", __func__, strerror(errno));
514:
515: close(devnull);
516:
517: while (waitpid(pid, &status, 0) == -1) {
518: if (errno != EINTR && errno != EAGAIN)
519: fatal("%s: waitpid: %s", __func__, strerror(errno));
520: }
521: if (!WIFEXITED(status)) {
522: error("command '%.100s' exited abnormally", cmd);
523: return -1;
1.221 djm 524: }
1.206 djm 525: debug3("command returned status %d", WEXITSTATUS(status));
526: return WEXITSTATUS(status);
527: }
528:
529: /*
530: * Parse and execute a Match directive.
531: */
532: static int
533: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 534: const char *host_arg, const char *original_host, int final_pass,
535: int *want_final_pass, const char *filename, int linenum)
1.206 djm 536: {
1.221 djm 537: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 538: const char *ruser;
1.221 djm 539: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 540: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 541: char uidstr[32];
1.206 djm 542:
543: /*
544: * Configuration is likely to be incomplete at this point so we
545: * must be prepared to use default values.
546: */
547: port = options->port <= 0 ? default_ssh_port() : options->port;
548: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 549: if (final_pass) {
1.250 djm 550: host = xstrdup(options->hostname);
551: } else if (options->hostname != NULL) {
1.212 djm 552: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 553: host = percent_expand(options->hostname,
554: "h", host_arg, (char *)NULL);
1.250 djm 555: } else {
1.211 djm 556: host = xstrdup(host_arg);
1.250 djm 557: }
1.206 djm 558:
1.221 djm 559: debug2("checking match for '%s' host %s originally %s",
560: cp, host, original_host);
561: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
562: criteria = NULL;
563: this_result = 1;
564: if ((negate = attrib[0] == '!'))
565: attrib++;
566: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 567: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 568: if (attributes > 1 ||
1.213 dtucker 569: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 570: error("%.200s line %d: '%s' cannot be combined "
571: "with other Match attributes",
572: filename, linenum, oattrib);
1.213 dtucker 573: result = -1;
574: goto out;
575: }
1.221 djm 576: if (result)
577: result = negate ? 0 : 1;
1.213 dtucker 578: goto out;
579: }
1.221 djm 580: attributes++;
1.302 djm 581: if (strcasecmp(attrib, "canonical") == 0 ||
582: strcasecmp(attrib, "final") == 0) {
583: /*
584: * If the config requests "Match final" then remember
585: * this so we can perform a second pass later.
586: */
587: if (strcasecmp(attrib, "final") == 0 &&
588: want_final_pass != NULL)
589: *want_final_pass = 1;
590: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 591: if (r == (negate ? 1 : 0))
592: this_result = result = 0;
593: debug3("%.200s line %d: %smatched '%s'",
594: filename, linenum,
595: this_result ? "" : "not ", oattrib);
596: continue;
597: }
598: /* All other criteria require an argument */
1.206 djm 599: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
600: error("Missing Match criteria for %s", attrib);
1.211 djm 601: result = -1;
602: goto out;
1.206 djm 603: }
604: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 605: criteria = xstrdup(host);
1.235 djm 606: r = match_hostname(host, arg) == 1;
1.221 djm 607: if (r == (negate ? 1 : 0))
608: this_result = result = 0;
1.206 djm 609: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 610: criteria = xstrdup(original_host);
1.235 djm 611: r = match_hostname(original_host, arg) == 1;
1.221 djm 612: if (r == (negate ? 1 : 0))
613: this_result = result = 0;
1.206 djm 614: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 615: criteria = xstrdup(ruser);
1.235 djm 616: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 617: if (r == (negate ? 1 : 0))
618: this_result = result = 0;
1.206 djm 619: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 620: criteria = xstrdup(pw->pw_name);
1.235 djm 621: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 622: if (r == (negate ? 1 : 0))
623: this_result = result = 0;
1.210 djm 624: } else if (strcasecmp(attrib, "exec") == 0) {
1.206 djm 625: if (gethostname(thishost, sizeof(thishost)) == -1)
626: fatal("gethostname: %s", strerror(errno));
627: strlcpy(shorthost, thishost, sizeof(shorthost));
628: shorthost[strcspn(thishost, ".")] = '\0';
629: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 630: snprintf(uidstr, sizeof(uidstr), "%llu",
631: (unsigned long long)pw->pw_uid);
1.206 djm 632:
633: cmd = percent_expand(arg,
634: "L", shorthost,
635: "d", pw->pw_dir,
636: "h", host,
637: "l", thishost,
1.221 djm 638: "n", original_host,
1.206 djm 639: "p", portstr,
640: "r", ruser,
641: "u", pw->pw_name,
1.288 djm 642: "i", uidstr,
1.206 djm 643: (char *)NULL);
1.217 djm 644: if (result != 1) {
645: /* skip execution if prior predicate failed */
1.221 djm 646: debug3("%.200s line %d: skipped exec "
647: "\"%.100s\"", filename, linenum, cmd);
648: free(cmd);
649: continue;
650: }
651: r = execute_in_shell(cmd);
652: if (r == -1) {
653: fatal("%.200s line %d: match exec "
654: "'%.100s' error", filename,
655: linenum, cmd);
1.217 djm 656: }
1.221 djm 657: criteria = xstrdup(cmd);
1.206 djm 658: free(cmd);
1.221 djm 659: /* Force exit status to boolean */
660: r = r == 0;
661: if (r == (negate ? 1 : 0))
662: this_result = result = 0;
1.206 djm 663: } else {
664: error("Unsupported Match attribute %s", attrib);
1.211 djm 665: result = -1;
666: goto out;
1.206 djm 667: }
1.221 djm 668: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
669: filename, linenum, this_result ? "": "not ",
670: oattrib, criteria);
671: free(criteria);
1.213 dtucker 672: }
673: if (attributes == 0) {
674: error("One or more attributes required for Match");
675: result = -1;
676: goto out;
1.206 djm 677: }
1.221 djm 678: out:
679: if (result != -1)
680: debug2("match %sfound", result ? "" : "not ");
1.206 djm 681: *condition = cp;
1.211 djm 682: free(host);
1.206 djm 683: return result;
684: }
685:
1.286 djm 686: /* Remove environment variable by pattern */
687: static void
688: rm_env(Options *options, const char *arg, const char *filename, int linenum)
689: {
690: int i, j;
691: char *cp;
692:
693: /* Remove an environment variable */
694: for (i = 0; i < options->num_send_env; ) {
695: cp = xstrdup(options->send_env[i]);
696: if (!match_pattern(cp, arg + 1)) {
697: free(cp);
698: i++;
699: continue;
700: }
701: debug3("%s line %d: removing environment %s",
702: filename, linenum, cp);
703: free(cp);
704: free(options->send_env[i]);
705: options->send_env[i] = NULL;
706: for (j = i; j < options->num_send_env - 1; j++) {
707: options->send_env[j] = options->send_env[j + 1];
708: options->send_env[j + 1] = NULL;
709: }
710: options->num_send_env--;
711: /* NB. don't increment i */
712: }
713: }
714:
1.19 markus 715: /*
1.70 stevesk 716: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 717: */
1.26 markus 718: static OpCodes
1.199 djm 719: parse_token(const char *cp, const char *filename, int linenum,
720: const char *ignored_unknown)
1.1 deraadt 721: {
1.199 djm 722: int i;
1.1 deraadt 723:
1.17 markus 724: for (i = 0; keywords[i].name; i++)
1.199 djm 725: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 726: return keywords[i].opcode;
1.235 djm 727: if (ignored_unknown != NULL &&
728: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 729: return oIgnoredUnknownOption;
1.75 stevesk 730: error("%s: line %d: Bad configuration option: %s",
731: filename, linenum, cp);
1.17 markus 732: return oBadOption;
1.1 deraadt 733: }
734:
1.207 djm 735: /* Multistate option parsing */
736: struct multistate {
737: char *key;
738: int value;
739: };
740: static const struct multistate multistate_flag[] = {
741: { "true", 1 },
742: { "false", 0 },
743: { "yes", 1 },
744: { "no", 0 },
745: { NULL, -1 }
746: };
747: static const struct multistate multistate_yesnoask[] = {
748: { "true", 1 },
749: { "false", 0 },
750: { "yes", 1 },
751: { "no", 0 },
752: { "ask", 2 },
753: { NULL, -1 }
754: };
1.278 djm 755: static const struct multistate multistate_strict_hostkey[] = {
756: { "true", SSH_STRICT_HOSTKEY_YES },
757: { "false", SSH_STRICT_HOSTKEY_OFF },
758: { "yes", SSH_STRICT_HOSTKEY_YES },
759: { "no", SSH_STRICT_HOSTKEY_OFF },
760: { "ask", SSH_STRICT_HOSTKEY_ASK },
761: { "off", SSH_STRICT_HOSTKEY_OFF },
762: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
763: { NULL, -1 }
764: };
1.246 jcs 765: static const struct multistate multistate_yesnoaskconfirm[] = {
766: { "true", 1 },
767: { "false", 0 },
768: { "yes", 1 },
769: { "no", 0 },
770: { "ask", 2 },
771: { "confirm", 3 },
772: { NULL, -1 }
773: };
1.207 djm 774: static const struct multistate multistate_addressfamily[] = {
775: { "inet", AF_INET },
776: { "inet6", AF_INET6 },
777: { "any", AF_UNSPEC },
778: { NULL, -1 }
779: };
780: static const struct multistate multistate_controlmaster[] = {
781: { "true", SSHCTL_MASTER_YES },
782: { "yes", SSHCTL_MASTER_YES },
783: { "false", SSHCTL_MASTER_NO },
784: { "no", SSHCTL_MASTER_NO },
785: { "auto", SSHCTL_MASTER_AUTO },
786: { "ask", SSHCTL_MASTER_ASK },
787: { "autoask", SSHCTL_MASTER_AUTO_ASK },
788: { NULL, -1 }
789: };
790: static const struct multistate multistate_tunnel[] = {
791: { "ethernet", SSH_TUNMODE_ETHERNET },
792: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
793: { "true", SSH_TUNMODE_DEFAULT },
794: { "yes", SSH_TUNMODE_DEFAULT },
795: { "false", SSH_TUNMODE_NO },
796: { "no", SSH_TUNMODE_NO },
797: { NULL, -1 }
798: };
799: static const struct multistate multistate_requesttty[] = {
800: { "true", REQUEST_TTY_YES },
801: { "yes", REQUEST_TTY_YES },
802: { "false", REQUEST_TTY_NO },
803: { "no", REQUEST_TTY_NO },
804: { "force", REQUEST_TTY_FORCE },
805: { "auto", REQUEST_TTY_AUTO },
806: { NULL, -1 }
807: };
1.209 djm 808: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 809: { "true", SSH_CANONICALISE_YES },
810: { "false", SSH_CANONICALISE_NO },
811: { "yes", SSH_CANONICALISE_YES },
812: { "no", SSH_CANONICALISE_NO },
813: { "always", SSH_CANONICALISE_ALWAYS },
814: { NULL, -1 }
815: };
1.207 djm 816:
1.19 markus 817: /*
818: * Processes a single option line as used in the configuration files. This
819: * only sets those values that have not already been set.
820: */
1.14 markus 821: int
1.206 djm 822: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 823: const char *original_host, char *line, const char *filename,
824: int linenum, int *activep, int flags)
1.1 deraadt 825: {
1.252 djm 826: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 827: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 828: }
829:
830: #define WHITESPACE " \t\r\n"
831: static int
832: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
833: const char *original_host, char *line, const char *filename,
1.302 djm 834: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 835: {
1.193 djm 836: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
837: char **cpptr, fwdarg[256];
1.199 djm 838: u_int i, *uintptr, max_entries = 0;
1.252 djm 839: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 840: int remotefwd, dynamicfwd;
1.164 dtucker 841: LogLevel *log_level_ptr;
1.271 dtucker 842: SyslogFacility *log_facility_ptr;
1.201 dtucker 843: long long val64;
1.102 markus 844: size_t len;
1.220 millert 845: struct Forward fwd;
1.207 djm 846: const struct multistate *multistate_ptr;
1.208 djm 847: struct allowed_cname *cname;
1.252 djm 848: glob_t gl;
1.281 dtucker 849: const char *errstr;
1.106 djm 850:
1.206 djm 851: if (activep == NULL) { /* We are processing a command line directive */
852: cmdline = 1;
853: activep = &cmdline;
854: }
855:
1.267 djm 856: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 857: if ((len = strlen(line)) == 0)
858: return 0;
859: for (len--; len > 0; len--) {
1.267 djm 860: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 861: break;
862: line[len] = '\0';
863: }
1.1 deraadt 864:
1.42 provos 865: s = line;
866: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 867: if ((keyword = strdelim(&s)) == NULL)
868: return 0;
1.42 provos 869: /* Ignore leading whitespace. */
870: if (*keyword == '\0')
1.43 markus 871: keyword = strdelim(&s);
1.56 deraadt 872: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 873: return 0;
1.199 djm 874: /* Match lowercase keyword */
1.207 djm 875: lowercase(keyword);
1.17 markus 876:
1.199 djm 877: opcode = parse_token(keyword, filename, linenum,
878: options->ignored_unknown);
1.17 markus 879:
880: switch (opcode) {
881: case oBadOption:
1.19 markus 882: /* don't panic, but count bad options */
883: return -1;
1.273 djm 884: case oIgnore:
885: return 0;
1.199 djm 886: case oIgnoredUnknownOption:
887: debug("%s line %d: Ignored unknown option \"%s\"",
888: filename, linenum, keyword);
889: return 0;
1.111 djm 890: case oConnectTimeout:
891: intptr = &options->connection_timeout;
1.127 markus 892: parse_time:
1.111 djm 893: arg = strdelim(&s);
894: if (!arg || *arg == '\0')
895: fatal("%s line %d: missing time value.",
896: filename, linenum);
1.221 djm 897: if (strcmp(arg, "none") == 0)
898: value = -1;
899: else if ((value = convtime(arg)) == -1)
1.111 djm 900: fatal("%s line %d: invalid time value.",
901: filename, linenum);
1.160 dtucker 902: if (*activep && *intptr == -1)
1.111 djm 903: *intptr = value;
904: break;
905:
1.17 markus 906: case oForwardAgent:
907: intptr = &options->forward_agent;
1.319 ! djm 908:
! 909: arg = strdelim(&s);
! 910: if (!arg || *arg == '\0')
! 911: fatal("%s line %d: missing argument.",
! 912: filename, linenum);
! 913:
! 914: value = -1;
! 915: multistate_ptr = multistate_flag;
! 916: for (i = 0; multistate_ptr[i].key != NULL; i++) {
! 917: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
! 918: value = multistate_ptr[i].value;
! 919: break;
! 920: }
! 921: }
! 922: if (value != -1) {
! 923: if (*activep && *intptr == -1)
! 924: *intptr = value;
! 925: break;
! 926: }
! 927: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
! 928: if (*activep && *intptr == -1)
! 929: *intptr = 1;
! 930:
! 931: charptr = &options->forward_agent_sock_path;
! 932: goto parse_agent_path;
! 933:
! 934: case oForwardX11:
! 935: intptr = &options->forward_x11;
1.207 djm 936: parse_flag:
937: multistate_ptr = multistate_flag;
938: parse_multistate:
1.42 provos 939: arg = strdelim(&s);
1.40 ho 940: if (!arg || *arg == '\0')
1.207 djm 941: fatal("%s line %d: missing argument.",
942: filename, linenum);
943: value = -1;
944: for (i = 0; multistate_ptr[i].key != NULL; i++) {
945: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
946: value = multistate_ptr[i].value;
947: break;
948: }
949: }
950: if (value == -1)
951: fatal("%s line %d: unsupported option \"%s\".",
952: filename, linenum, arg);
1.17 markus 953: if (*activep && *intptr == -1)
954: *intptr = value;
955: break;
956:
1.123 markus 957: case oForwardX11Trusted:
958: intptr = &options->forward_x11_trusted;
959: goto parse_flag;
1.221 djm 960:
1.186 djm 961: case oForwardX11Timeout:
962: intptr = &options->forward_x11_timeout;
963: goto parse_time;
1.123 markus 964:
1.17 markus 965: case oGatewayPorts:
1.220 millert 966: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 967: goto parse_flag;
968:
1.153 markus 969: case oExitOnForwardFailure:
970: intptr = &options->exit_on_forward_failure;
971: goto parse_flag;
972:
1.17 markus 973: case oPasswordAuthentication:
974: intptr = &options->password_authentication;
975: goto parse_flag;
976:
1.48 markus 977: case oKbdInteractiveAuthentication:
978: intptr = &options->kbd_interactive_authentication;
979: goto parse_flag;
980:
981: case oKbdInteractiveDevices:
982: charptr = &options->kbd_interactive_devices;
983: goto parse_string;
984:
1.50 markus 985: case oPubkeyAuthentication:
986: intptr = &options->pubkey_authentication;
1.30 markus 987: goto parse_flag;
988:
1.72 markus 989: case oHostbasedAuthentication:
990: intptr = &options->hostbased_authentication;
991: goto parse_flag;
992:
1.59 markus 993: case oChallengeResponseAuthentication:
1.78 markus 994: intptr = &options->challenge_response_authentication;
1.17 markus 995: goto parse_flag;
1.108 jakob 996:
1.118 markus 997: case oGssAuthentication:
998: intptr = &options->gss_authentication;
999: goto parse_flag;
1000:
1001: case oGssDelegateCreds:
1002: intptr = &options->gss_deleg_creds;
1003: goto parse_flag;
1004:
1.17 markus 1005: case oBatchMode:
1006: intptr = &options->batch_mode;
1007: goto parse_flag;
1008:
1009: case oCheckHostIP:
1010: intptr = &options->check_host_ip;
1.167 grunk 1011: goto parse_flag;
1.17 markus 1012:
1.107 jakob 1013: case oVerifyHostKeyDNS:
1014: intptr = &options->verify_host_key_dns;
1.207 djm 1015: multistate_ptr = multistate_yesnoask;
1016: goto parse_multistate;
1.107 jakob 1017:
1.17 markus 1018: case oStrictHostKeyChecking:
1019: intptr = &options->strict_host_key_checking;
1.278 djm 1020: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1021: goto parse_multistate;
1.17 markus 1022:
1023: case oCompression:
1024: intptr = &options->compression;
1025: goto parse_flag;
1026:
1.126 markus 1027: case oTCPKeepAlive:
1028: intptr = &options->tcp_keep_alive;
1.17 markus 1029: goto parse_flag;
1030:
1.91 markus 1031: case oNoHostAuthenticationForLocalhost:
1032: intptr = &options->no_host_authentication_for_localhost;
1033: goto parse_flag;
1034:
1.17 markus 1035: case oNumberOfPasswordPrompts:
1036: intptr = &options->number_of_password_prompts;
1037: goto parse_int;
1038:
1.105 markus 1039: case oRekeyLimit:
1040: arg = strdelim(&s);
1041: if (!arg || *arg == '\0')
1.198 dtucker 1042: fatal("%.200s line %d: Missing argument.", filename,
1043: linenum);
1044: if (strcmp(arg, "default") == 0) {
1045: val64 = 0;
1046: } else {
1.200 dtucker 1047: if (scan_scaled(arg, &val64) == -1)
1048: fatal("%.200s line %d: Bad number '%s': %s",
1049: filename, linenum, arg, strerror(errno));
1.198 dtucker 1050: if (val64 != 0 && val64 < 16)
1051: fatal("%.200s line %d: RekeyLimit too small",
1052: filename, linenum);
1.105 markus 1053: }
1.165 djm 1054: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1055: options->rekey_limit = val64;
1.198 dtucker 1056: if (s != NULL) { /* optional rekey interval present */
1057: if (strcmp(s, "none") == 0) {
1058: (void)strdelim(&s); /* discard */
1059: break;
1060: }
1061: intptr = &options->rekey_interval;
1062: goto parse_time;
1063: }
1.105 markus 1064: break;
1065:
1.17 markus 1066: case oIdentityFile:
1.42 provos 1067: arg = strdelim(&s);
1.40 ho 1068: if (!arg || *arg == '\0')
1.17 markus 1069: fatal("%.200s line %d: Missing argument.", filename, linenum);
1070: if (*activep) {
1.50 markus 1071: intptr = &options->num_identity_files;
1.27 markus 1072: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 1073: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 1074: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 1075: add_identity_file(options, NULL,
1076: arg, flags & SSHCONF_USERCONF);
1.17 markus 1077: }
1078: break;
1079:
1.241 djm 1080: case oCertificateFile:
1081: arg = strdelim(&s);
1082: if (!arg || *arg == '\0')
1083: fatal("%.200s line %d: Missing argument.",
1084: filename, linenum);
1085: if (*activep) {
1086: intptr = &options->num_certificate_files;
1087: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1088: fatal("%.200s line %d: Too many certificate "
1089: "files specified (max %d).",
1090: filename, linenum,
1091: SSH_MAX_CERTIFICATE_FILES);
1092: }
1093: add_certificate_file(options, arg,
1094: flags & SSHCONF_USERCONF);
1095: }
1096: break;
1097:
1.34 markus 1098: case oXAuthLocation:
1099: charptr=&options->xauth_location;
1100: goto parse_string;
1101:
1.17 markus 1102: case oUser:
1103: charptr = &options->user;
1104: parse_string:
1.42 provos 1105: arg = strdelim(&s);
1.40 ho 1106: if (!arg || *arg == '\0')
1.193 djm 1107: fatal("%.200s line %d: Missing argument.",
1108: filename, linenum);
1.17 markus 1109: if (*activep && *charptr == NULL)
1.38 provos 1110: *charptr = xstrdup(arg);
1.17 markus 1111: break;
1112:
1113: case oGlobalKnownHostsFile:
1.193 djm 1114: cpptr = (char **)&options->system_hostfiles;
1115: uintptr = &options->num_system_hostfiles;
1116: max_entries = SSH_MAX_HOSTS_FILES;
1117: parse_char_array:
1118: if (*activep && *uintptr == 0) {
1119: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1120: if ((*uintptr) >= max_entries)
1121: fatal("%s line %d: "
1122: "too many authorized keys files.",
1123: filename, linenum);
1124: cpptr[(*uintptr)++] = xstrdup(arg);
1125: }
1126: }
1127: return 0;
1.17 markus 1128:
1129: case oUserKnownHostsFile:
1.193 djm 1130: cpptr = (char **)&options->user_hostfiles;
1131: uintptr = &options->num_user_hostfiles;
1132: max_entries = SSH_MAX_HOSTS_FILES;
1133: goto parse_char_array;
1.27 markus 1134:
1.306 jmc 1135: case oHostname:
1.17 markus 1136: charptr = &options->hostname;
1137: goto parse_string;
1138:
1.52 markus 1139: case oHostKeyAlias:
1140: charptr = &options->host_key_alias;
1141: goto parse_string;
1142:
1.67 markus 1143: case oPreferredAuthentications:
1144: charptr = &options->preferred_authentications;
1145: goto parse_string;
1146:
1.77 markus 1147: case oBindAddress:
1148: charptr = &options->bind_address;
1149: goto parse_string;
1150:
1.282 djm 1151: case oBindInterface:
1152: charptr = &options->bind_interface;
1153: goto parse_string;
1154:
1.183 markus 1155: case oPKCS11Provider:
1156: charptr = &options->pkcs11_provider;
1.86 markus 1157: goto parse_string;
1.85 jakob 1158:
1.310 djm 1159: case oSecurityKeyProvider:
1160: charptr = &options->sk_provider;
1161: goto parse_string;
1162:
1.17 markus 1163: case oProxyCommand:
1.144 reyk 1164: charptr = &options->proxy_command;
1.257 djm 1165: /* Ignore ProxyCommand if ProxyJump already specified */
1166: if (options->jump_host != NULL)
1167: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1168: parse_command:
1.113 markus 1169: if (s == NULL)
1170: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1171: len = strspn(s, WHITESPACE "=");
1.17 markus 1172: if (*activep && *charptr == NULL)
1.102 markus 1173: *charptr = xstrdup(s + len);
1.17 markus 1174: return 0;
1175:
1.257 djm 1176: case oProxyJump:
1177: if (s == NULL) {
1178: fatal("%.200s line %d: Missing argument.",
1179: filename, linenum);
1180: }
1181: len = strspn(s, WHITESPACE "=");
1182: if (parse_jump(s + len, options, *activep) == -1) {
1183: fatal("%.200s line %d: Invalid ProxyJump \"%s\"",
1184: filename, linenum, s + len);
1185: }
1186: return 0;
1187:
1.17 markus 1188: case oPort:
1.300 naddy 1189: arg = strdelim(&s);
1190: if (!arg || *arg == '\0')
1191: fatal("%.200s line %d: Missing argument.",
1192: filename, linenum);
1193: value = a2port(arg);
1194: if (value <= 0)
1195: fatal("%.200s line %d: Bad port '%s'.",
1196: filename, linenum, arg);
1197: if (*activep && options->port == -1)
1198: options->port = value;
1199: break;
1200:
1201: case oConnectionAttempts:
1202: intptr = &options->connection_attempts;
1.17 markus 1203: parse_int:
1.42 provos 1204: arg = strdelim(&s);
1.281 dtucker 1205: if ((errstr = atoi_err(arg, &value)) != NULL)
1206: fatal("%s line %d: integer value %s.",
1207: filename, linenum, errstr);
1.17 markus 1208: if (*activep && *intptr == -1)
1209: *intptr = value;
1210: break;
1211:
1.25 markus 1212: case oCiphers:
1.42 provos 1213: arg = strdelim(&s);
1.40 ho 1214: if (!arg || *arg == '\0')
1.32 markus 1215: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1216: if (*arg != '-' &&
1217: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.31 markus 1218: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1219: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1220: if (*activep && options->ciphers == NULL)
1.38 provos 1221: options->ciphers = xstrdup(arg);
1.25 markus 1222: break;
1223:
1.62 markus 1224: case oMacs:
1225: arg = strdelim(&s);
1226: if (!arg || *arg == '\0')
1227: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1228: if (*arg != '-' &&
1229: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.305 dtucker 1230: fatal("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1231: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1232: if (*activep && options->macs == NULL)
1233: options->macs = xstrdup(arg);
1234: break;
1235:
1.189 djm 1236: case oKexAlgorithms:
1237: arg = strdelim(&s);
1238: if (!arg || *arg == '\0')
1239: fatal("%.200s line %d: Missing argument.",
1240: filename, linenum);
1.268 djm 1241: if (*arg != '-' &&
1.309 naddy 1242: !kex_names_valid(*arg == '+' || *arg == '^' ?
1243: arg + 1 : arg))
1.189 djm 1244: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1245: filename, linenum, arg ? arg : "<NONE>");
1246: if (*activep && options->kex_algorithms == NULL)
1247: options->kex_algorithms = xstrdup(arg);
1248: break;
1249:
1.76 markus 1250: case oHostKeyAlgorithms:
1.238 markus 1251: charptr = &options->hostkeyalgorithms;
1252: parse_keytypes:
1.76 markus 1253: arg = strdelim(&s);
1254: if (!arg || *arg == '\0')
1.238 markus 1255: fatal("%.200s line %d: Missing argument.",
1256: filename, linenum);
1.268 djm 1257: if (*arg != '-' &&
1.309 naddy 1258: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1259: arg + 1 : arg, 1))
1.238 markus 1260: fatal("%s line %d: Bad key types '%s'.",
1261: filename, linenum, arg ? arg : "<NONE>");
1262: if (*activep && *charptr == NULL)
1263: *charptr = xstrdup(arg);
1.76 markus 1264: break;
1265:
1.298 djm 1266: case oCASignatureAlgorithms:
1267: charptr = &options->ca_sign_algorithms;
1268: goto parse_keytypes;
1269:
1.17 markus 1270: case oLogLevel:
1.164 dtucker 1271: log_level_ptr = &options->log_level;
1.42 provos 1272: arg = strdelim(&s);
1.38 provos 1273: value = log_level_number(arg);
1.95 markus 1274: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1275: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1276: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1277: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1278: *log_level_ptr = (LogLevel) value;
1.17 markus 1279: break;
1280:
1.271 dtucker 1281: case oLogFacility:
1282: log_facility_ptr = &options->log_facility;
1283: arg = strdelim(&s);
1284: value = log_facility_number(arg);
1285: if (value == SYSLOG_FACILITY_NOT_SET)
1286: fatal("%.200s line %d: unsupported log facility '%s'",
1287: filename, linenum, arg ? arg : "<NONE>");
1288: if (*log_facility_ptr == -1)
1289: *log_facility_ptr = (SyslogFacility) value;
1290: break;
1291:
1.88 stevesk 1292: case oLocalForward:
1.17 markus 1293: case oRemoteForward:
1.168 stevesk 1294: case oDynamicForward:
1.42 provos 1295: arg = strdelim(&s);
1.135 djm 1296: if (arg == NULL || *arg == '\0')
1.88 stevesk 1297: fatal("%.200s line %d: Missing port argument.",
1298: filename, linenum);
1.135 djm 1299:
1.279 markus 1300: remotefwd = (opcode == oRemoteForward);
1301: dynamicfwd = (opcode == oDynamicForward);
1302:
1303: if (!dynamicfwd) {
1.168 stevesk 1304: arg2 = strdelim(&s);
1.279 markus 1305: if (arg2 == NULL || *arg2 == '\0') {
1306: if (remotefwd)
1307: dynamicfwd = 1;
1308: else
1309: fatal("%.200s line %d: Missing target "
1310: "argument.", filename, linenum);
1311: } else {
1312: /* construct a string for parse_forward */
1313: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1314: arg2);
1315: }
1316: }
1317: if (dynamicfwd)
1.168 stevesk 1318: strlcpy(fwdarg, arg, sizeof(fwdarg));
1319:
1.279 markus 1320: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0)
1.88 stevesk 1321: fatal("%.200s line %d: Bad forwarding specification.",
1322: filename, linenum);
1.135 djm 1323:
1.88 stevesk 1324: if (*activep) {
1.279 markus 1325: if (remotefwd) {
1326: add_remote_forward(options, &fwd);
1327: } else {
1.135 djm 1328: add_local_forward(options, &fwd);
1.279 markus 1329: }
1.88 stevesk 1330: }
1.17 markus 1331: break;
1.71 markus 1332:
1.90 stevesk 1333: case oClearAllForwardings:
1334: intptr = &options->clear_forwardings;
1335: goto parse_flag;
1336:
1.17 markus 1337: case oHost:
1.206 djm 1338: if (cmdline)
1339: fatal("Host directive not supported as a command-line "
1340: "option");
1.17 markus 1341: *activep = 0;
1.191 djm 1342: arg2 = NULL;
1343: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.252 djm 1344: if ((flags & SSHCONF_NEVERMATCH) != 0)
1345: break;
1.191 djm 1346: negated = *arg == '!';
1347: if (negated)
1348: arg++;
1.38 provos 1349: if (match_pattern(host, arg)) {
1.191 djm 1350: if (negated) {
1351: debug("%.200s line %d: Skipping Host "
1352: "block because of negated match "
1353: "for %.100s", filename, linenum,
1354: arg);
1355: *activep = 0;
1356: break;
1357: }
1358: if (!*activep)
1359: arg2 = arg; /* logged below */
1.17 markus 1360: *activep = 1;
1361: }
1.191 djm 1362: }
1363: if (*activep)
1364: debug("%.200s line %d: Applying options for %.100s",
1365: filename, linenum, arg2);
1.42 provos 1366: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1367: return 0;
1368:
1.206 djm 1369: case oMatch:
1370: if (cmdline)
1371: fatal("Host directive not supported as a command-line "
1372: "option");
1.221 djm 1373: value = match_cfg_line(options, &s, pw, host, original_host,
1.302 djm 1374: flags & SSHCONF_FINAL, want_final_pass,
1375: filename, linenum);
1.206 djm 1376: if (value < 0)
1377: fatal("%.200s line %d: Bad Match condition", filename,
1378: linenum);
1.252 djm 1379: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.206 djm 1380: break;
1381:
1.17 markus 1382: case oEscapeChar:
1383: intptr = &options->escape_char;
1.42 provos 1384: arg = strdelim(&s);
1.40 ho 1385: if (!arg || *arg == '\0')
1.17 markus 1386: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1387: if (strcmp(arg, "none") == 0)
1388: value = SSH_ESCAPECHAR_NONE;
1389: else if (arg[1] == '\0')
1390: value = (u_char) arg[0];
1391: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1392: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1393: value = (u_char) arg[1] & 31;
1.17 markus 1394: else {
1395: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1396: filename, linenum);
1.17 markus 1397: /* NOTREACHED */
1398: value = 0; /* Avoid compiler warning. */
1399: }
1400: if (*activep && *intptr == -1)
1401: *intptr = value;
1.112 djm 1402: break;
1403:
1404: case oAddressFamily:
1.114 djm 1405: intptr = &options->address_family;
1.207 djm 1406: multistate_ptr = multistate_addressfamily;
1407: goto parse_multistate;
1.17 markus 1408:
1.101 markus 1409: case oEnableSSHKeysign:
1410: intptr = &options->enable_ssh_keysign;
1411: goto parse_flag;
1412:
1.128 markus 1413: case oIdentitiesOnly:
1414: intptr = &options->identities_only;
1415: goto parse_flag;
1416:
1.127 markus 1417: case oServerAliveInterval:
1418: intptr = &options->server_alive_interval;
1419: goto parse_time;
1420:
1421: case oServerAliveCountMax:
1422: intptr = &options->server_alive_count_max;
1423: goto parse_int;
1424:
1.130 djm 1425: case oSendEnv:
1426: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1427: if (strchr(arg, '=') != NULL)
1428: fatal("%s line %d: Invalid environment name.",
1429: filename, linenum);
1.137 djm 1430: if (!*activep)
1431: continue;
1.286 djm 1432: if (*arg == '-') {
1433: /* Removing an env var */
1434: rm_env(options, arg, filename, linenum);
1435: continue;
1436: } else {
1437: /* Adding an env var */
1.290 djm 1438: if (options->num_send_env >= INT_MAX)
1.286 djm 1439: fatal("%s line %d: too many send env.",
1440: filename, linenum);
1.290 djm 1441: options->send_env = xrecallocarray(
1442: options->send_env, options->num_send_env,
1.291 djm 1443: options->num_send_env + 1,
1.290 djm 1444: sizeof(*options->send_env));
1.286 djm 1445: options->send_env[options->num_send_env++] =
1446: xstrdup(arg);
1447: }
1.130 djm 1448: }
1449: break;
1450:
1.290 djm 1451: case oSetEnv:
1452: value = options->num_setenv;
1453: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1454: if (strchr(arg, '=') == NULL)
1455: fatal("%s line %d: Invalid SetEnv.",
1456: filename, linenum);
1457: if (!*activep || value != 0)
1458: continue;
1459: /* Adding a setenv var */
1460: if (options->num_setenv >= INT_MAX)
1461: fatal("%s line %d: too many SetEnv.",
1462: filename, linenum);
1463: options->setenv = xrecallocarray(
1464: options->setenv, options->num_setenv,
1465: options->num_setenv + 1, sizeof(*options->setenv));
1466: options->setenv[options->num_setenv++] = xstrdup(arg);
1467: }
1468: break;
1469:
1.132 djm 1470: case oControlPath:
1471: charptr = &options->control_path;
1472: goto parse_string;
1473:
1474: case oControlMaster:
1475: intptr = &options->control_master;
1.207 djm 1476: multistate_ptr = multistate_controlmaster;
1477: goto parse_multistate;
1.132 djm 1478:
1.187 djm 1479: case oControlPersist:
1480: /* no/false/yes/true, or a time spec */
1481: intptr = &options->control_persist;
1482: arg = strdelim(&s);
1483: if (!arg || *arg == '\0')
1484: fatal("%.200s line %d: Missing ControlPersist"
1485: " argument.", filename, linenum);
1486: value = 0;
1487: value2 = 0; /* timeout */
1488: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1489: value = 0;
1490: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1491: value = 1;
1492: else if ((value2 = convtime(arg)) >= 0)
1493: value = 1;
1494: else
1495: fatal("%.200s line %d: Bad ControlPersist argument.",
1496: filename, linenum);
1497: if (*activep && *intptr == -1) {
1498: *intptr = value;
1499: options->control_persist_timeout = value2;
1500: }
1501: break;
1502:
1.136 djm 1503: case oHashKnownHosts:
1504: intptr = &options->hash_known_hosts;
1505: goto parse_flag;
1506:
1.144 reyk 1507: case oTunnel:
1508: intptr = &options->tun_open;
1.207 djm 1509: multistate_ptr = multistate_tunnel;
1510: goto parse_multistate;
1.144 reyk 1511:
1512: case oTunnelDevice:
1513: arg = strdelim(&s);
1514: if (!arg || *arg == '\0')
1515: fatal("%.200s line %d: Missing argument.", filename, linenum);
1516: value = a2tun(arg, &value2);
1.145 reyk 1517: if (value == SSH_TUNID_ERR)
1.144 reyk 1518: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1519: if (*activep) {
1520: options->tun_local = value;
1521: options->tun_remote = value2;
1522: }
1523: break;
1524:
1525: case oLocalCommand:
1526: charptr = &options->local_command;
1527: goto parse_command;
1528:
1529: case oPermitLocalCommand:
1530: intptr = &options->permit_local_command;
1531: goto parse_flag;
1532:
1.277 bluhm 1533: case oRemoteCommand:
1534: charptr = &options->remote_command;
1535: goto parse_command;
1536:
1.167 grunk 1537: case oVisualHostKey:
1538: intptr = &options->visual_host_key;
1539: goto parse_flag;
1540:
1.252 djm 1541: case oInclude:
1542: if (cmdline)
1543: fatal("Include directive not supported as a "
1544: "command-line option");
1545: value = 0;
1546: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1547: /*
1548: * Ensure all paths are anchored. User configuration
1549: * files may begin with '~/' but system configurations
1550: * must not. If the path is relative, then treat it
1551: * as living in ~/.ssh for user configurations or
1552: * /etc/ssh for system ones.
1553: */
1554: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0)
1555: fatal("%.200s line %d: bad include path %s.",
1556: filename, linenum, arg);
1.301 djm 1557: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1558: xasprintf(&arg2, "%s/%s",
1559: (flags & SSHCONF_USERCONF) ?
1560: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1561: } else
1562: arg2 = xstrdup(arg);
1563: memset(&gl, 0, sizeof(gl));
1564: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1565: if (r == GLOB_NOMATCH) {
1566: debug("%.200s line %d: include %s matched no "
1567: "files",filename, linenum, arg2);
1.269 dtucker 1568: free(arg2);
1.252 djm 1569: continue;
1.313 deraadt 1570: } else if (r != 0)
1.252 djm 1571: fatal("%.200s line %d: glob failed for %s.",
1572: filename, linenum, arg2);
1573: free(arg2);
1574: oactive = *activep;
1.313 deraadt 1575: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1576: debug3("%.200s line %d: Including file %s "
1577: "depth %d%s", filename, linenum,
1578: gl.gl_pathv[i], depth,
1579: oactive ? "" : " (parse only)");
1580: r = read_config_file_depth(gl.gl_pathv[i],
1581: pw, host, original_host, options,
1582: flags | SSHCONF_CHECKPERM |
1583: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1584: activep, want_final_pass, depth + 1);
1.264 djm 1585: if (r != 1 && errno != ENOENT) {
1.263 djm 1586: fatal("Can't open user config file "
1587: "%.100s: %.100s", gl.gl_pathv[i],
1588: strerror(errno));
1589: }
1.252 djm 1590: /*
1591: * don't let Match in includes clobber the
1592: * containing file's Match state.
1593: */
1594: *activep = oactive;
1595: if (r != 1)
1596: value = -1;
1597: }
1598: globfree(&gl);
1599: }
1600: if (value != 0)
1601: return value;
1602: break;
1603:
1.190 djm 1604: case oIPQoS:
1605: arg = strdelim(&s);
1606: if ((value = parse_ipqos(arg)) == -1)
1607: fatal("%s line %d: Bad IPQoS value: %s",
1608: filename, linenum, arg);
1609: arg = strdelim(&s);
1610: if (arg == NULL)
1611: value2 = value;
1612: else if ((value2 = parse_ipqos(arg)) == -1)
1613: fatal("%s line %d: Bad IPQoS value: %s",
1614: filename, linenum, arg);
1615: if (*activep) {
1616: options->ip_qos_interactive = value;
1617: options->ip_qos_bulk = value2;
1618: }
1619: break;
1620:
1.192 djm 1621: case oRequestTTY:
1622: intptr = &options->request_tty;
1.207 djm 1623: multistate_ptr = multistate_requesttty;
1624: goto parse_multistate;
1.192 djm 1625:
1.199 djm 1626: case oIgnoreUnknown:
1627: charptr = &options->ignored_unknown;
1628: goto parse_string;
1629:
1.205 djm 1630: case oProxyUseFdpass:
1631: intptr = &options->proxy_use_fdpass;
1632: goto parse_flag;
1633:
1.208 djm 1634: case oCanonicalDomains:
1635: value = options->num_canonical_domains != 0;
1636: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.280 millert 1637: if (!valid_domain(arg, 1, &errstr)) {
1638: fatal("%s line %d: %s", filename, linenum,
1639: errstr);
1640: }
1.208 djm 1641: if (!*activep || value)
1642: continue;
1643: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1644: fatal("%s line %d: too many hostname suffixes.",
1645: filename, linenum);
1646: options->canonical_domains[
1647: options->num_canonical_domains++] = xstrdup(arg);
1648: }
1649: break;
1650:
1.209 djm 1651: case oCanonicalizePermittedCNAMEs:
1.208 djm 1652: value = options->num_permitted_cnames != 0;
1653: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1654: /* Either '*' for everything or 'list:list' */
1655: if (strcmp(arg, "*") == 0)
1656: arg2 = arg;
1657: else {
1658: lowercase(arg);
1659: if ((arg2 = strchr(arg, ':')) == NULL ||
1660: arg2[1] == '\0') {
1661: fatal("%s line %d: "
1662: "Invalid permitted CNAME \"%s\"",
1663: filename, linenum, arg);
1664: }
1665: *arg2 = '\0';
1666: arg2++;
1667: }
1668: if (!*activep || value)
1669: continue;
1670: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1671: fatal("%s line %d: too many permitted CNAMEs.",
1672: filename, linenum);
1673: cname = options->permitted_cnames +
1674: options->num_permitted_cnames++;
1675: cname->source_list = xstrdup(arg);
1676: cname->target_list = xstrdup(arg2);
1677: }
1678: break;
1679:
1.209 djm 1680: case oCanonicalizeHostname:
1681: intptr = &options->canonicalize_hostname;
1682: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1683: goto parse_multistate;
1684:
1.209 djm 1685: case oCanonicalizeMaxDots:
1686: intptr = &options->canonicalize_max_dots;
1.208 djm 1687: goto parse_int;
1688:
1.209 djm 1689: case oCanonicalizeFallbackLocal:
1690: intptr = &options->canonicalize_fallback_local;
1.208 djm 1691: goto parse_flag;
1692:
1.220 millert 1693: case oStreamLocalBindMask:
1694: arg = strdelim(&s);
1695: if (!arg || *arg == '\0')
1696: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1697: /* Parse mode in octal format */
1698: value = strtol(arg, &endofnumber, 8);
1699: if (arg == endofnumber || value < 0 || value > 0777)
1700: fatal("%.200s line %d: Bad mask.", filename, linenum);
1701: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1702: break;
1703:
1704: case oStreamLocalBindUnlink:
1705: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1706: goto parse_flag;
1707:
1.223 djm 1708: case oRevokedHostKeys:
1709: charptr = &options->revoked_host_keys;
1710: goto parse_string;
1711:
1.224 djm 1712: case oFingerprintHash:
1.225 djm 1713: intptr = &options->fingerprint_hash;
1.224 djm 1714: arg = strdelim(&s);
1715: if (!arg || *arg == '\0')
1716: fatal("%.200s line %d: Missing argument.",
1717: filename, linenum);
1718: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1719: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1720: filename, linenum, arg);
1.225 djm 1721: if (*activep && *intptr == -1)
1722: *intptr = value;
1.224 djm 1723: break;
1724:
1.229 djm 1725: case oUpdateHostkeys:
1726: intptr = &options->update_hostkeys;
1.232 djm 1727: multistate_ptr = multistate_yesnoask;
1728: goto parse_multistate;
1.229 djm 1729:
1.230 djm 1730: case oHostbasedKeyTypes:
1731: charptr = &options->hostbased_key_types;
1.238 markus 1732: goto parse_keytypes;
1733:
1734: case oPubkeyAcceptedKeyTypes:
1735: charptr = &options->pubkey_key_types;
1736: goto parse_keytypes;
1.230 djm 1737:
1.246 jcs 1738: case oAddKeysToAgent:
1739: intptr = &options->add_keys_to_agent;
1740: multistate_ptr = multistate_yesnoaskconfirm;
1741: goto parse_multistate;
1742:
1.253 markus 1743: case oIdentityAgent:
1744: charptr = &options->identity_agent;
1.299 djm 1745: arg = strdelim(&s);
1746: if (!arg || *arg == '\0')
1747: fatal("%.200s line %d: Missing argument.",
1748: filename, linenum);
1.319 ! djm 1749: parse_agent_path:
1.299 djm 1750: /* Extra validation if the string represents an env var. */
1751: if (arg[0] == '$' && !valid_env_name(arg + 1)) {
1752: fatal("%.200s line %d: Invalid environment name %s.",
1753: filename, linenum, arg);
1754: }
1755: if (*activep && *charptr == NULL)
1756: *charptr = xstrdup(arg);
1757: break;
1.253 markus 1758:
1.96 markus 1759: case oDeprecated:
1.98 markus 1760: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1761: filename, linenum, keyword);
1.98 markus 1762: return 0;
1.96 markus 1763:
1.110 jakob 1764: case oUnsupported:
1765: error("%s line %d: Unsupported option \"%s\"",
1766: filename, linenum, keyword);
1767: return 0;
1768:
1.17 markus 1769: default:
1.221 djm 1770: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1771: }
1772:
1773: /* Check that there is no garbage at end of line. */
1.57 djm 1774: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1775: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1776: filename, linenum, arg);
1.39 ho 1777: }
1.17 markus 1778: return 0;
1.1 deraadt 1779: }
1780:
1.19 markus 1781: /*
1782: * Reads the config file and modifies the options accordingly. Options
1783: * should already be initialized before this call. This never returns if
1.89 stevesk 1784: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1785: */
1.89 stevesk 1786: int
1.206 djm 1787: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 1788: const char *original_host, Options *options, int flags,
1789: int *want_final_pass)
1.1 deraadt 1790: {
1.252 djm 1791: int active = 1;
1792:
1793: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 1794: options, flags, &active, want_final_pass, 0);
1.252 djm 1795: }
1796:
1797: #define READCONF_MAX_DEPTH 16
1798: static int
1799: read_config_file_depth(const char *filename, struct passwd *pw,
1800: const char *host, const char *original_host, Options *options,
1.302 djm 1801: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 1802: {
1.17 markus 1803: FILE *f;
1.289 markus 1804: char *line = NULL;
1805: size_t linesize = 0;
1.252 djm 1806: int linenum;
1.17 markus 1807: int bad_options = 0;
1808:
1.252 djm 1809: if (depth < 0 || depth > READCONF_MAX_DEPTH)
1810: fatal("Too many recursive configuration includes");
1811:
1.129 djm 1812: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1813: return 0;
1.129 djm 1814:
1.196 dtucker 1815: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1816: struct stat sb;
1.134 deraadt 1817:
1.131 dtucker 1818: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1819: fatal("fstat %s: %s", filename, strerror(errno));
1820: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1821: (sb.st_mode & 022) != 0))
1.129 djm 1822: fatal("Bad owner or permissions on %s", filename);
1823: }
1.17 markus 1824:
1825: debug("Reading configuration data %.200s", filename);
1826:
1.19 markus 1827: /*
1828: * Mark that we are now processing the options. This flag is turned
1829: * on/off by Host specifications.
1830: */
1.17 markus 1831: linenum = 0;
1.289 markus 1832: while (getline(&line, &linesize, f) != -1) {
1.17 markus 1833: /* Update line number counter. */
1834: linenum++;
1.252 djm 1835: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 1836: line, filename, linenum, activep, flags, want_final_pass,
1837: depth) != 0)
1.17 markus 1838: bad_options++;
1839: }
1.289 markus 1840: free(line);
1.17 markus 1841: fclose(f);
1842: if (bad_options > 0)
1.64 millert 1843: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1844: filename, bad_options);
1.89 stevesk 1845: return 1;
1.1 deraadt 1846: }
1847:
1.218 djm 1848: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1849: int
1850: option_clear_or_none(const char *o)
1851: {
1852: return o == NULL || strcasecmp(o, "none") == 0;
1853: }
1854:
1.19 markus 1855: /*
1856: * Initializes options to special values that indicate that they have not yet
1857: * been set. Read_config_file will only set options with this value. Options
1858: * are processed in the following order: command line, user config file,
1859: * system config file. Last, fill_default_options is called.
1860: */
1.1 deraadt 1861:
1.26 markus 1862: void
1.17 markus 1863: initialize_options(Options * options)
1.1 deraadt 1864: {
1.17 markus 1865: memset(options, 'X', sizeof(*options));
1866: options->forward_agent = -1;
1.319 ! djm 1867: options->forward_agent_sock_path = NULL;
1.17 markus 1868: options->forward_x11 = -1;
1.123 markus 1869: options->forward_x11_trusted = -1;
1.186 djm 1870: options->forward_x11_timeout = -1;
1.255 dtucker 1871: options->stdio_forward_host = NULL;
1872: options->stdio_forward_port = 0;
1.256 dtucker 1873: options->clear_forwardings = -1;
1.153 markus 1874: options->exit_on_forward_failure = -1;
1.34 markus 1875: options->xauth_location = NULL;
1.220 millert 1876: options->fwd_opts.gateway_ports = -1;
1877: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1878: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 1879: options->pubkey_authentication = -1;
1.78 markus 1880: options->challenge_response_authentication = -1;
1.118 markus 1881: options->gss_authentication = -1;
1882: options->gss_deleg_creds = -1;
1.17 markus 1883: options->password_authentication = -1;
1.48 markus 1884: options->kbd_interactive_authentication = -1;
1885: options->kbd_interactive_devices = NULL;
1.72 markus 1886: options->hostbased_authentication = -1;
1.17 markus 1887: options->batch_mode = -1;
1888: options->check_host_ip = -1;
1889: options->strict_host_key_checking = -1;
1890: options->compression = -1;
1.126 markus 1891: options->tcp_keep_alive = -1;
1.17 markus 1892: options->port = -1;
1.114 djm 1893: options->address_family = -1;
1.17 markus 1894: options->connection_attempts = -1;
1.111 djm 1895: options->connection_timeout = -1;
1.17 markus 1896: options->number_of_password_prompts = -1;
1.25 markus 1897: options->ciphers = NULL;
1.62 markus 1898: options->macs = NULL;
1.189 djm 1899: options->kex_algorithms = NULL;
1.76 markus 1900: options->hostkeyalgorithms = NULL;
1.298 djm 1901: options->ca_sign_algorithms = NULL;
1.17 markus 1902: options->num_identity_files = 0;
1.241 djm 1903: options->num_certificate_files = 0;
1.17 markus 1904: options->hostname = NULL;
1.52 markus 1905: options->host_key_alias = NULL;
1.17 markus 1906: options->proxy_command = NULL;
1.257 djm 1907: options->jump_user = NULL;
1908: options->jump_host = NULL;
1909: options->jump_port = -1;
1910: options->jump_extra = NULL;
1.17 markus 1911: options->user = NULL;
1912: options->escape_char = -1;
1.193 djm 1913: options->num_system_hostfiles = 0;
1914: options->num_user_hostfiles = 0;
1.185 djm 1915: options->local_forwards = NULL;
1.17 markus 1916: options->num_local_forwards = 0;
1.185 djm 1917: options->remote_forwards = NULL;
1.17 markus 1918: options->num_remote_forwards = 0;
1.271 dtucker 1919: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 1920: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1921: options->preferred_authentications = NULL;
1.77 markus 1922: options->bind_address = NULL;
1.282 djm 1923: options->bind_interface = NULL;
1.183 markus 1924: options->pkcs11_provider = NULL;
1.310 djm 1925: options->sk_provider = NULL;
1.101 markus 1926: options->enable_ssh_keysign = - 1;
1.91 markus 1927: options->no_host_authentication_for_localhost = - 1;
1.128 markus 1928: options->identities_only = - 1;
1.105 markus 1929: options->rekey_limit = - 1;
1.198 dtucker 1930: options->rekey_interval = -1;
1.107 jakob 1931: options->verify_host_key_dns = -1;
1.127 markus 1932: options->server_alive_interval = -1;
1933: options->server_alive_count_max = -1;
1.290 djm 1934: options->send_env = NULL;
1.130 djm 1935: options->num_send_env = 0;
1.290 djm 1936: options->setenv = NULL;
1937: options->num_setenv = 0;
1.132 djm 1938: options->control_path = NULL;
1939: options->control_master = -1;
1.187 djm 1940: options->control_persist = -1;
1941: options->control_persist_timeout = 0;
1.136 djm 1942: options->hash_known_hosts = -1;
1.144 reyk 1943: options->tun_open = -1;
1944: options->tun_local = -1;
1945: options->tun_remote = -1;
1946: options->local_command = NULL;
1947: options->permit_local_command = -1;
1.277 bluhm 1948: options->remote_command = NULL;
1.246 jcs 1949: options->add_keys_to_agent = -1;
1.253 markus 1950: options->identity_agent = NULL;
1.167 grunk 1951: options->visual_host_key = -1;
1.190 djm 1952: options->ip_qos_interactive = -1;
1953: options->ip_qos_bulk = -1;
1.192 djm 1954: options->request_tty = -1;
1.205 djm 1955: options->proxy_use_fdpass = -1;
1.199 djm 1956: options->ignored_unknown = NULL;
1.208 djm 1957: options->num_canonical_domains = 0;
1958: options->num_permitted_cnames = 0;
1.209 djm 1959: options->canonicalize_max_dots = -1;
1960: options->canonicalize_fallback_local = -1;
1961: options->canonicalize_hostname = -1;
1.223 djm 1962: options->revoked_host_keys = NULL;
1.224 djm 1963: options->fingerprint_hash = -1;
1.229 djm 1964: options->update_hostkeys = -1;
1.230 djm 1965: options->hostbased_key_types = NULL;
1.238 markus 1966: options->pubkey_key_types = NULL;
1.1 deraadt 1967: }
1968:
1.19 markus 1969: /*
1.218 djm 1970: * A petite version of fill_default_options() that just fills the options
1971: * needed for hostname canonicalization to proceed.
1972: */
1973: void
1974: fill_default_options_for_canonicalization(Options *options)
1975: {
1976: if (options->canonicalize_max_dots == -1)
1977: options->canonicalize_max_dots = 1;
1978: if (options->canonicalize_fallback_local == -1)
1979: options->canonicalize_fallback_local = 1;
1980: if (options->canonicalize_hostname == -1)
1981: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1982: }
1983:
1984: /*
1.19 markus 1985: * Called after processing other sources of option data, this fills those
1986: * options for which no value has been specified with their default values.
1987: */
1.26 markus 1988: void
1.17 markus 1989: fill_default_options(Options * options)
1.1 deraadt 1990: {
1.298 djm 1991: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.297 djm 1992: int r;
1.292 djm 1993:
1.17 markus 1994: if (options->forward_agent == -1)
1.33 markus 1995: options->forward_agent = 0;
1.17 markus 1996: if (options->forward_x11 == -1)
1.23 markus 1997: options->forward_x11 = 0;
1.123 markus 1998: if (options->forward_x11_trusted == -1)
1999: options->forward_x11_trusted = 0;
1.186 djm 2000: if (options->forward_x11_timeout == -1)
2001: options->forward_x11_timeout = 1200;
1.256 dtucker 2002: /*
2003: * stdio forwarding (-W) changes the default for these but we defer
2004: * setting the values so they can be overridden.
2005: */
1.153 markus 2006: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2007: options->exit_on_forward_failure =
2008: options->stdio_forward_host != NULL ? 1 : 0;
2009: if (options->clear_forwardings == -1)
2010: options->clear_forwardings =
2011: options->stdio_forward_host != NULL ? 1 : 0;
2012: if (options->clear_forwardings == 1)
2013: clear_forwardings(options);
2014:
1.34 markus 2015: if (options->xauth_location == NULL)
1.80 markus 2016: options->xauth_location = _PATH_XAUTH;
1.220 millert 2017: if (options->fwd_opts.gateway_ports == -1)
2018: options->fwd_opts.gateway_ports = 0;
2019: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2020: options->fwd_opts.streamlocal_bind_mask = 0177;
2021: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2022: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2023: if (options->pubkey_authentication == -1)
2024: options->pubkey_authentication = 1;
1.78 markus 2025: if (options->challenge_response_authentication == -1)
1.83 markus 2026: options->challenge_response_authentication = 1;
1.118 markus 2027: if (options->gss_authentication == -1)
1.122 markus 2028: options->gss_authentication = 0;
1.118 markus 2029: if (options->gss_deleg_creds == -1)
2030: options->gss_deleg_creds = 0;
1.17 markus 2031: if (options->password_authentication == -1)
2032: options->password_authentication = 1;
1.48 markus 2033: if (options->kbd_interactive_authentication == -1)
1.59 markus 2034: options->kbd_interactive_authentication = 1;
1.72 markus 2035: if (options->hostbased_authentication == -1)
2036: options->hostbased_authentication = 0;
1.17 markus 2037: if (options->batch_mode == -1)
2038: options->batch_mode = 0;
2039: if (options->check_host_ip == -1)
2040: options->check_host_ip = 1;
2041: if (options->strict_host_key_checking == -1)
1.278 djm 2042: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2043: if (options->compression == -1)
2044: options->compression = 0;
1.126 markus 2045: if (options->tcp_keep_alive == -1)
2046: options->tcp_keep_alive = 1;
1.17 markus 2047: if (options->port == -1)
2048: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2049: if (options->address_family == -1)
2050: options->address_family = AF_UNSPEC;
1.17 markus 2051: if (options->connection_attempts == -1)
1.84 markus 2052: options->connection_attempts = 1;
1.17 markus 2053: if (options->number_of_password_prompts == -1)
2054: options->number_of_password_prompts = 3;
1.76 markus 2055: /* options->hostkeyalgorithms, default set in myproposals.h */
1.246 jcs 2056: if (options->add_keys_to_agent == -1)
2057: options->add_keys_to_agent = 0;
1.17 markus 2058: if (options->num_identity_files == 0) {
1.273 djm 2059: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2060: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2061: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2062: add_identity_file(options, "~/",
1.310 djm 2063: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2064: add_identity_file(options, "~/",
1.273 djm 2065: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2066: add_identity_file(options, "~/",
2067: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2068: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2069: }
1.17 markus 2070: if (options->escape_char == -1)
2071: options->escape_char = '~';
1.193 djm 2072: if (options->num_system_hostfiles == 0) {
2073: options->system_hostfiles[options->num_system_hostfiles++] =
2074: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2075: options->system_hostfiles[options->num_system_hostfiles++] =
2076: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2077: }
2078: if (options->num_user_hostfiles == 0) {
2079: options->user_hostfiles[options->num_user_hostfiles++] =
2080: xstrdup(_PATH_SSH_USER_HOSTFILE);
2081: options->user_hostfiles[options->num_user_hostfiles++] =
2082: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2083: }
1.95 markus 2084: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2085: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2086: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2087: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2088: if (options->no_host_authentication_for_localhost == - 1)
2089: options->no_host_authentication_for_localhost = 0;
1.128 markus 2090: if (options->identities_only == -1)
2091: options->identities_only = 0;
1.101 markus 2092: if (options->enable_ssh_keysign == -1)
2093: options->enable_ssh_keysign = 0;
1.105 markus 2094: if (options->rekey_limit == -1)
2095: options->rekey_limit = 0;
1.198 dtucker 2096: if (options->rekey_interval == -1)
2097: options->rekey_interval = 0;
1.107 jakob 2098: if (options->verify_host_key_dns == -1)
2099: options->verify_host_key_dns = 0;
1.127 markus 2100: if (options->server_alive_interval == -1)
2101: options->server_alive_interval = 0;
2102: if (options->server_alive_count_max == -1)
2103: options->server_alive_count_max = 3;
1.132 djm 2104: if (options->control_master == -1)
2105: options->control_master = 0;
1.187 djm 2106: if (options->control_persist == -1) {
2107: options->control_persist = 0;
2108: options->control_persist_timeout = 0;
2109: }
1.136 djm 2110: if (options->hash_known_hosts == -1)
2111: options->hash_known_hosts = 0;
1.144 reyk 2112: if (options->tun_open == -1)
1.145 reyk 2113: options->tun_open = SSH_TUNMODE_NO;
2114: if (options->tun_local == -1)
2115: options->tun_local = SSH_TUNID_ANY;
2116: if (options->tun_remote == -1)
2117: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2118: if (options->permit_local_command == -1)
2119: options->permit_local_command = 0;
1.167 grunk 2120: if (options->visual_host_key == -1)
2121: options->visual_host_key = 0;
1.190 djm 2122: if (options->ip_qos_interactive == -1)
1.284 job 2123: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2124: if (options->ip_qos_bulk == -1)
1.284 job 2125: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2126: if (options->request_tty == -1)
2127: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2128: if (options->proxy_use_fdpass == -1)
2129: options->proxy_use_fdpass = 0;
1.209 djm 2130: if (options->canonicalize_max_dots == -1)
2131: options->canonicalize_max_dots = 1;
2132: if (options->canonicalize_fallback_local == -1)
2133: options->canonicalize_fallback_local = 1;
2134: if (options->canonicalize_hostname == -1)
2135: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2136: if (options->fingerprint_hash == -1)
2137: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.229 djm 2138: if (options->update_hostkeys == -1)
1.231 djm 2139: options->update_hostkeys = 0;
1.310 djm 2140: if (options->sk_provider == NULL)
1.314 djm 2141: options->sk_provider = xstrdup("internal");
1.292 djm 2142:
2143: /* Expand KEX name lists */
2144: all_cipher = cipher_alg_list(',', 0);
2145: all_mac = mac_alg_list(',');
2146: all_kex = kex_alg_list(',');
2147: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2148: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.297 djm 2149: #define ASSEMBLE(what, defaults, all) \
2150: do { \
2151: if ((r = kex_assemble_names(&options->what, \
2152: defaults, all)) != 0) \
2153: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
2154: } while (0)
1.303 djm 2155: ASSEMBLE(ciphers, KEX_CLIENT_ENCRYPT, all_cipher);
2156: ASSEMBLE(macs, KEX_CLIENT_MAC, all_mac);
2157: ASSEMBLE(kex_algorithms, KEX_CLIENT_KEX, all_kex);
1.297 djm 2158: ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
1.315 djm 2159: ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
1.298 djm 2160: ASSEMBLE(ca_sign_algorithms, SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2161: #undef ASSEMBLE
1.292 djm 2162: free(all_cipher);
2163: free(all_mac);
2164: free(all_kex);
2165: free(all_key);
1.298 djm 2166: free(all_sig);
1.224 djm 2167:
1.207 djm 2168: #define CLEAR_ON_NONE(v) \
2169: do { \
1.218 djm 2170: if (option_clear_or_none(v)) { \
1.207 djm 2171: free(v); \
2172: v = NULL; \
2173: } \
2174: } while(0)
2175: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2176: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2177: CLEAR_ON_NONE(options->proxy_command);
2178: CLEAR_ON_NONE(options->control_path);
1.223 djm 2179: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2180: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2181: CLEAR_ON_NONE(options->sk_provider);
1.287 djm 2182: if (options->jump_host != NULL &&
2183: strcmp(options->jump_host, "none") == 0 &&
2184: options->jump_port == 0 && options->jump_user == NULL) {
2185: free(options->jump_host);
2186: options->jump_host = NULL;
2187: }
1.254 markus 2188: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2189: /* options->user will be set in the main program if appropriate */
2190: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2191: /* options->host_key_alias should not be set by default */
1.67 markus 2192: /* options->preferred_authentications will be set in ssh */
1.135 djm 2193: }
2194:
1.220 millert 2195: struct fwdarg {
2196: char *arg;
2197: int ispath;
2198: };
2199:
2200: /*
2201: * parse_fwd_field
2202: * parses the next field in a port forwarding specification.
2203: * sets fwd to the parsed field and advances p past the colon
2204: * or sets it to NULL at end of string.
2205: * returns 0 on success, else non-zero.
2206: */
2207: static int
2208: parse_fwd_field(char **p, struct fwdarg *fwd)
2209: {
2210: char *ep, *cp = *p;
2211: int ispath = 0;
2212:
2213: if (*cp == '\0') {
2214: *p = NULL;
2215: return -1; /* end of string */
2216: }
2217:
2218: /*
2219: * A field escaped with square brackets is used literally.
2220: * XXX - allow ']' to be escaped via backslash?
2221: */
2222: if (*cp == '[') {
2223: /* find matching ']' */
2224: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2225: if (*ep == '/')
2226: ispath = 1;
2227: }
2228: /* no matching ']' or not at end of field. */
2229: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2230: return -1;
2231: /* NUL terminate the field and advance p past the colon */
2232: *ep++ = '\0';
2233: if (*ep != '\0')
2234: *ep++ = '\0';
2235: fwd->arg = cp + 1;
2236: fwd->ispath = ispath;
2237: *p = ep;
2238: return 0;
2239: }
2240:
2241: for (cp = *p; *cp != '\0'; cp++) {
2242: switch (*cp) {
2243: case '\\':
2244: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2245: if (*cp == '\0')
2246: return -1;
1.220 millert 2247: break;
2248: case '/':
2249: ispath = 1;
2250: break;
2251: case ':':
2252: *cp++ = '\0';
2253: goto done;
2254: }
2255: }
2256: done:
2257: fwd->arg = *p;
2258: fwd->ispath = ispath;
2259: *p = cp;
2260: return 0;
2261: }
2262:
1.135 djm 2263: /*
2264: * parse_forward
2265: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2266: * dynamicfwd == 0
1.220 millert 2267: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2268: * listenpath:connectpath
1.168 stevesk 2269: * dynamicfwd == 1
2270: * [listenhost:]listenport
1.135 djm 2271: * returns number of arguments parsed or zero on error
2272: */
2273: int
1.220 millert 2274: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2275: {
1.220 millert 2276: struct fwdarg fwdargs[4];
2277: char *p, *cp;
1.135 djm 2278: int i;
2279:
1.220 millert 2280: memset(fwd, 0, sizeof(*fwd));
2281: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2282:
2283: cp = p = xstrdup(fwdspec);
2284:
2285: /* skip leading spaces */
1.214 deraadt 2286: while (isspace((u_char)*cp))
1.135 djm 2287: cp++;
2288:
1.220 millert 2289: for (i = 0; i < 4; ++i) {
2290: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2291: break;
1.220 millert 2292: }
1.135 djm 2293:
1.170 stevesk 2294: /* Check for trailing garbage */
1.220 millert 2295: if (cp != NULL && *cp != '\0') {
1.135 djm 2296: i = 0; /* failure */
1.220 millert 2297: }
1.135 djm 2298:
2299: switch (i) {
1.168 stevesk 2300: case 1:
1.220 millert 2301: if (fwdargs[0].ispath) {
2302: fwd->listen_path = xstrdup(fwdargs[0].arg);
2303: fwd->listen_port = PORT_STREAMLOCAL;
2304: } else {
2305: fwd->listen_host = NULL;
2306: fwd->listen_port = a2port(fwdargs[0].arg);
2307: }
1.168 stevesk 2308: fwd->connect_host = xstrdup("socks");
2309: break;
2310:
2311: case 2:
1.220 millert 2312: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2313: fwd->listen_path = xstrdup(fwdargs[0].arg);
2314: fwd->listen_port = PORT_STREAMLOCAL;
2315: fwd->connect_path = xstrdup(fwdargs[1].arg);
2316: fwd->connect_port = PORT_STREAMLOCAL;
2317: } else if (fwdargs[1].ispath) {
2318: fwd->listen_host = NULL;
2319: fwd->listen_port = a2port(fwdargs[0].arg);
2320: fwd->connect_path = xstrdup(fwdargs[1].arg);
2321: fwd->connect_port = PORT_STREAMLOCAL;
2322: } else {
2323: fwd->listen_host = xstrdup(fwdargs[0].arg);
2324: fwd->listen_port = a2port(fwdargs[1].arg);
2325: fwd->connect_host = xstrdup("socks");
2326: }
1.168 stevesk 2327: break;
2328:
1.135 djm 2329: case 3:
1.220 millert 2330: if (fwdargs[0].ispath) {
2331: fwd->listen_path = xstrdup(fwdargs[0].arg);
2332: fwd->listen_port = PORT_STREAMLOCAL;
2333: fwd->connect_host = xstrdup(fwdargs[1].arg);
2334: fwd->connect_port = a2port(fwdargs[2].arg);
2335: } else if (fwdargs[2].ispath) {
2336: fwd->listen_host = xstrdup(fwdargs[0].arg);
2337: fwd->listen_port = a2port(fwdargs[1].arg);
2338: fwd->connect_path = xstrdup(fwdargs[2].arg);
2339: fwd->connect_port = PORT_STREAMLOCAL;
2340: } else {
2341: fwd->listen_host = NULL;
2342: fwd->listen_port = a2port(fwdargs[0].arg);
2343: fwd->connect_host = xstrdup(fwdargs[1].arg);
2344: fwd->connect_port = a2port(fwdargs[2].arg);
2345: }
1.135 djm 2346: break;
2347:
2348: case 4:
1.220 millert 2349: fwd->listen_host = xstrdup(fwdargs[0].arg);
2350: fwd->listen_port = a2port(fwdargs[1].arg);
2351: fwd->connect_host = xstrdup(fwdargs[2].arg);
2352: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2353: break;
2354: default:
2355: i = 0; /* failure */
2356: }
2357:
1.202 djm 2358: free(p);
1.135 djm 2359:
1.168 stevesk 2360: if (dynamicfwd) {
2361: if (!(i == 1 || i == 2))
2362: goto fail_free;
2363: } else {
1.220 millert 2364: if (!(i == 3 || i == 4)) {
2365: if (fwd->connect_path == NULL &&
2366: fwd->listen_path == NULL)
2367: goto fail_free;
2368: }
2369: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2370: goto fail_free;
2371: }
2372:
1.220 millert 2373: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2374: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2375: goto fail_free;
2376: if (fwd->connect_host != NULL &&
2377: strlen(fwd->connect_host) >= NI_MAXHOST)
2378: goto fail_free;
1.220 millert 2379: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2380: if (fwd->connect_path != NULL &&
2381: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2382: goto fail_free;
1.176 djm 2383: if (fwd->listen_host != NULL &&
2384: strlen(fwd->listen_host) >= NI_MAXHOST)
2385: goto fail_free;
1.220 millert 2386: if (fwd->listen_path != NULL &&
2387: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2388: goto fail_free;
1.135 djm 2389:
2390: return (i);
2391:
2392: fail_free:
1.202 djm 2393: free(fwd->connect_host);
2394: fwd->connect_host = NULL;
1.220 millert 2395: free(fwd->connect_path);
2396: fwd->connect_path = NULL;
1.202 djm 2397: free(fwd->listen_host);
2398: fwd->listen_host = NULL;
1.220 millert 2399: free(fwd->listen_path);
2400: fwd->listen_path = NULL;
1.135 djm 2401: return (0);
1.221 djm 2402: }
2403:
1.257 djm 2404: int
2405: parse_jump(const char *s, Options *o, int active)
2406: {
2407: char *orig, *sdup, *cp;
2408: char *host = NULL, *user = NULL;
1.258 naddy 2409: int ret = -1, port = -1, first;
1.257 djm 2410:
2411: active &= o->proxy_command == NULL && o->jump_host == NULL;
2412:
2413: orig = sdup = xstrdup(s);
1.258 naddy 2414: first = active;
1.259 djm 2415: do {
1.287 djm 2416: if (strcasecmp(s, "none") == 0)
2417: break;
1.259 djm 2418: if ((cp = strrchr(sdup, ',')) == NULL)
2419: cp = sdup; /* last */
2420: else
2421: *cp++ = '\0';
2422:
1.258 naddy 2423: if (first) {
1.257 djm 2424: /* First argument and configuration is active */
1.280 millert 2425: if (parse_ssh_uri(cp, &user, &host, &port) == -1 ||
2426: parse_user_host_port(cp, &user, &host, &port) != 0)
1.257 djm 2427: goto out;
2428: } else {
2429: /* Subsequent argument or inactive configuration */
1.280 millert 2430: if (parse_ssh_uri(cp, NULL, NULL, NULL) == -1 ||
2431: parse_user_host_port(cp, NULL, NULL, NULL) != 0)
1.257 djm 2432: goto out;
2433: }
1.258 naddy 2434: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2435: } while (cp != sdup);
1.257 djm 2436: /* success */
1.258 naddy 2437: if (active) {
1.287 djm 2438: if (strcasecmp(s, "none") == 0) {
2439: o->jump_host = xstrdup("none");
2440: o->jump_port = 0;
2441: } else {
2442: o->jump_user = user;
2443: o->jump_host = host;
2444: o->jump_port = port;
2445: o->proxy_command = xstrdup("none");
2446: user = host = NULL;
2447: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2448: o->jump_extra = xstrdup(s);
2449: o->jump_extra[cp - s] = '\0';
2450: }
1.259 djm 2451: }
1.258 naddy 2452: }
1.257 djm 2453: ret = 0;
2454: out:
1.258 naddy 2455: free(orig);
1.257 djm 2456: free(user);
2457: free(host);
2458: return ret;
1.280 millert 2459: }
2460:
2461: int
2462: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2463: {
2464: char *path;
2465: int r;
2466:
2467: r = parse_uri("ssh", uri, userp, hostp, portp, &path);
2468: if (r == 0 && path != NULL)
2469: r = -1; /* path not allowed */
2470: return r;
1.257 djm 2471: }
2472:
1.221 djm 2473: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2474: static const char *
2475: fmt_multistate_int(int val, const struct multistate *m)
2476: {
2477: u_int i;
2478:
2479: for (i = 0; m[i].key != NULL; i++) {
2480: if (m[i].value == val)
2481: return m[i].key;
2482: }
2483: return "UNKNOWN";
2484: }
2485:
2486: static const char *
2487: fmt_intarg(OpCodes code, int val)
2488: {
2489: if (val == -1)
2490: return "unset";
2491: switch (code) {
2492: case oAddressFamily:
2493: return fmt_multistate_int(val, multistate_addressfamily);
2494: case oVerifyHostKeyDNS:
1.232 djm 2495: case oUpdateHostkeys:
1.221 djm 2496: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 2497: case oStrictHostKeyChecking:
2498: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 2499: case oControlMaster:
2500: return fmt_multistate_int(val, multistate_controlmaster);
2501: case oTunnel:
2502: return fmt_multistate_int(val, multistate_tunnel);
2503: case oRequestTTY:
2504: return fmt_multistate_int(val, multistate_requesttty);
2505: case oCanonicalizeHostname:
2506: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 2507: case oAddKeysToAgent:
2508: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 2509: case oFingerprintHash:
2510: return ssh_digest_alg_name(val);
1.221 djm 2511: default:
2512: switch (val) {
2513: case 0:
2514: return "no";
2515: case 1:
2516: return "yes";
2517: default:
2518: return "UNKNOWN";
2519: }
2520: }
2521: }
2522:
2523: static const char *
2524: lookup_opcode_name(OpCodes code)
2525: {
2526: u_int i;
2527:
2528: for (i = 0; keywords[i].name != NULL; i++)
2529: if (keywords[i].opcode == code)
2530: return(keywords[i].name);
2531: return "UNKNOWN";
2532: }
2533:
2534: static void
2535: dump_cfg_int(OpCodes code, int val)
2536: {
2537: printf("%s %d\n", lookup_opcode_name(code), val);
2538: }
2539:
2540: static void
2541: dump_cfg_fmtint(OpCodes code, int val)
2542: {
2543: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2544: }
2545:
2546: static void
2547: dump_cfg_string(OpCodes code, const char *val)
2548: {
2549: if (val == NULL)
2550: return;
2551: printf("%s %s\n", lookup_opcode_name(code), val);
2552: }
2553:
2554: static void
2555: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2556: {
2557: u_int i;
2558:
2559: for (i = 0; i < count; i++)
2560: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2561: }
2562:
2563: static void
2564: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2565: {
2566: u_int i;
2567:
2568: printf("%s", lookup_opcode_name(code));
2569: for (i = 0; i < count; i++)
2570: printf(" %s", vals[i]);
2571: printf("\n");
2572: }
2573:
2574: static void
2575: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2576: {
2577: const struct Forward *fwd;
2578: u_int i;
2579:
2580: /* oDynamicForward */
2581: for (i = 0; i < count; i++) {
2582: fwd = &fwds[i];
1.265 djm 2583: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 2584: strcmp(fwd->connect_host, "socks") != 0)
2585: continue;
1.265 djm 2586: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 2587: strcmp(fwd->connect_host, "socks") == 0)
2588: continue;
2589: printf("%s", lookup_opcode_name(code));
2590: if (fwd->listen_port == PORT_STREAMLOCAL)
2591: printf(" %s", fwd->listen_path);
2592: else if (fwd->listen_host == NULL)
2593: printf(" %d", fwd->listen_port);
2594: else {
2595: printf(" [%s]:%d",
2596: fwd->listen_host, fwd->listen_port);
2597: }
2598: if (code != oDynamicForward) {
2599: if (fwd->connect_port == PORT_STREAMLOCAL)
2600: printf(" %s", fwd->connect_path);
2601: else if (fwd->connect_host == NULL)
2602: printf(" %d", fwd->connect_port);
2603: else {
2604: printf(" [%s]:%d",
2605: fwd->connect_host, fwd->connect_port);
2606: }
2607: }
2608: printf("\n");
2609: }
2610: }
2611:
2612: void
2613: dump_client_config(Options *o, const char *host)
2614: {
2615: int i;
1.292 djm 2616: char buf[8], *all_key;
1.221 djm 2617:
1.240 djm 2618: /* This is normally prepared in ssh_kex2 */
1.292 djm 2619: all_key = sshkey_alg_list(0, 0, 1, ',');
2620: if (kex_assemble_names( &o->hostkeyalgorithms,
2621: KEX_DEFAULT_PK_ALG, all_key) != 0)
1.240 djm 2622: fatal("%s: kex_assemble_names failed", __func__);
1.292 djm 2623: free(all_key);
1.240 djm 2624:
1.221 djm 2625: /* Most interesting options first: user, host, port */
2626: dump_cfg_string(oUser, o->user);
1.306 jmc 2627: dump_cfg_string(oHostname, host);
1.221 djm 2628: dump_cfg_int(oPort, o->port);
2629:
2630: /* Flag options */
1.285 djm 2631: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
1.221 djm 2632: dump_cfg_fmtint(oAddressFamily, o->address_family);
2633: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2634: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2635: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2636: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2637: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2638: dump_cfg_fmtint(oCompression, o->compression);
2639: dump_cfg_fmtint(oControlMaster, o->control_master);
2640: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 2641: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 2642: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2643: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2644: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2645: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2646: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2647: #ifdef GSSAPI
2648: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2649: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2650: #endif /* GSSAPI */
2651: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2652: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2653: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2654: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2655: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2656: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2657: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2658: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2659: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2660: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2661: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2662: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2663: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2664: dump_cfg_fmtint(oTunnel, o->tun_open);
2665: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2666: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2667: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2668:
2669: /* Integer options */
2670: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2671: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2672: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2673: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2674: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2675: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2676:
2677: /* String options */
2678: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 2679: dump_cfg_string(oBindInterface, o->bind_interface);
1.221 djm 2680: dump_cfg_string(oCiphers, o->ciphers ? o->ciphers : KEX_CLIENT_ENCRYPT);
2681: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 2682: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 2683: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2684: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.253 markus 2685: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 2686: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 2687: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
2688: dump_cfg_string(oKexAlgorithms, o->kex_algorithms ? o->kex_algorithms : KEX_CLIENT_KEX);
1.298 djm 2689: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms ? o->ca_sign_algorithms : SSH_ALLOWED_CA_SIGALGS);
1.221 djm 2690: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 2691: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 2692: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
2693: dump_cfg_string(oMacs, o->macs ? o->macs : KEX_CLIENT_MAC);
1.266 djm 2694: #ifdef ENABLE_PKCS11
1.221 djm 2695: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 2696: #endif
1.310 djm 2697: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 2698: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.242 djm 2699: dump_cfg_string(oPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.230 djm 2700: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2701: dump_cfg_string(oXAuthLocation, o->xauth_location);
2702:
1.230 djm 2703: /* Forwards */
1.221 djm 2704: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2705: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2706: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2707:
2708: /* String array options */
2709: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2710: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 2711: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 2712: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2713: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2714: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 2715: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.221 djm 2716:
2717: /* Special cases */
1.319 ! djm 2718:
! 2719: /* oForwardAgent */
! 2720: if (o->forward_agent_sock_path == NULL)
! 2721: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
! 2722: else
! 2723: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 2724:
2725: /* oConnectTimeout */
2726: if (o->connection_timeout == -1)
2727: printf("connecttimeout none\n");
2728: else
2729: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2730:
2731: /* oTunnelDevice */
2732: printf("tunneldevice");
2733: if (o->tun_local == SSH_TUNID_ANY)
2734: printf(" any");
2735: else
2736: printf(" %d", o->tun_local);
2737: if (o->tun_remote == SSH_TUNID_ANY)
2738: printf(":any");
2739: else
2740: printf(":%d", o->tun_remote);
2741: printf("\n");
2742:
2743: /* oCanonicalizePermittedCNAMEs */
2744: if ( o->num_permitted_cnames > 0) {
2745: printf("canonicalizePermittedcnames");
2746: for (i = 0; i < o->num_permitted_cnames; i++) {
2747: printf(" %s:%s", o->permitted_cnames[i].source_list,
2748: o->permitted_cnames[i].target_list);
2749: }
2750: printf("\n");
2751: }
2752:
2753: /* oControlPersist */
2754: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2755: dump_cfg_fmtint(oControlPersist, o->control_persist);
2756: else
2757: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2758:
2759: /* oEscapeChar */
2760: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2761: printf("escapechar none\n");
2762: else {
1.257 djm 2763: vis(buf, o->escape_char, VIS_WHITE, 0);
2764: printf("escapechar %s\n", buf);
1.221 djm 2765: }
2766:
2767: /* oIPQoS */
2768: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2769: printf("%s\n", iptos2str(o->ip_qos_bulk));
2770:
2771: /* oRekeyLimit */
1.249 dtucker 2772: printf("rekeylimit %llu %d\n",
2773: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 2774:
2775: /* oStreamLocalBindMask */
2776: printf("streamlocalbindmask 0%o\n",
2777: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 2778:
2779: /* oLogFacility */
2780: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 2781:
2782: /* oProxyCommand / oProxyJump */
2783: if (o->jump_host == NULL)
2784: dump_cfg_string(oProxyCommand, o->proxy_command);
2785: else {
2786: /* Check for numeric addresses */
2787: i = strchr(o->jump_host, ':') != NULL ||
2788: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
2789: snprintf(buf, sizeof(buf), "%d", o->jump_port);
2790: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 2791: /* optional additional jump spec */
2792: o->jump_extra == NULL ? "" : o->jump_extra,
2793: o->jump_extra == NULL ? "" : ",",
1.257 djm 2794: /* optional user */
2795: o->jump_user == NULL ? "" : o->jump_user,
2796: o->jump_user == NULL ? "" : "@",
2797: /* opening [ if hostname is numeric */
2798: i ? "[" : "",
2799: /* mandatory hostname */
2800: o->jump_host,
2801: /* closing ] if hostname is numeric */
2802: i ? "]" : "",
2803: /* optional port number */
2804: o->jump_port <= 0 ? "" : ":",
1.259 djm 2805: o->jump_port <= 0 ? "" : buf);
1.257 djm 2806: }
1.1 deraadt 2807: }
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