Annotation of src/usr.bin/ssh/readconf.c, Revision 1.341
1.341 ! djm 1: /* $OpenBSD: readconf.c,v 1.340 2020/10/18 11:32:01 djm Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
21: #include <netinet/in.h>
1.190 djm 22: #include <netinet/ip.h>
1.148 stevesk 23:
24: #include <ctype.h>
1.154 stevesk 25: #include <errno.h>
1.206 djm 26: #include <fcntl.h>
1.252 djm 27: #include <glob.h>
1.155 stevesk 28: #include <netdb.h>
1.206 djm 29: #include <paths.h>
30: #include <pwd.h>
1.159 deraadt 31: #include <signal.h>
1.158 stevesk 32: #include <stdio.h>
1.157 stevesk 33: #include <string.h>
1.312 deraadt 34: #include <stdarg.h>
1.156 stevesk 35: #include <unistd.h>
1.228 deraadt 36: #include <limits.h>
1.200 dtucker 37: #include <util.h>
1.221 djm 38: #include <vis.h>
1.1 deraadt 39:
1.159 deraadt 40: #include "xmalloc.h"
1.1 deraadt 41: #include "ssh.h"
1.297 djm 42: #include "ssherr.h"
1.25 markus 43: #include "compat.h"
1.58 markus 44: #include "cipher.h"
1.55 markus 45: #include "pathnames.h"
1.58 markus 46: #include "log.h"
1.227 djm 47: #include "sshkey.h"
1.220 millert 48: #include "misc.h"
1.58 markus 49: #include "readconf.h"
50: #include "match.h"
1.62 markus 51: #include "kex.h"
52: #include "mac.h"
1.206 djm 53: #include "uidswap.h"
1.221 djm 54: #include "myproposal.h"
1.224 djm 55: #include "digest.h"
1.1 deraadt 56:
57: /* Format of the configuration file:
58:
59: # Configuration data is parsed as follows:
60: # 1. command line options
61: # 2. user-specific file
62: # 3. system-wide file
63: # Any configuration value is only changed the first time it is set.
64: # Thus, host-specific definitions should be at the beginning of the
65: # configuration file, and defaults at the end.
66:
67: # Host-specific declarations. These may override anything above. A single
68: # host may match multiple declarations; these are processed in the order
69: # that they are given in.
70:
71: Host *.ngs.fi ngs.fi
1.96 markus 72: User foo
1.1 deraadt 73:
74: Host fake.com
1.306 jmc 75: Hostname another.host.name.real.org
1.1 deraadt 76: User blaah
77: Port 34289
78: ForwardX11 no
79: ForwardAgent no
80:
81: Host books.com
82: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 83: Ciphers 3des-cbc
1.1 deraadt 84:
85: Host fascist.blob.com
86: Port 23123
87: User tylonen
88: PasswordAuthentication no
89:
90: Host puukko.hut.fi
91: User t35124p
92: ProxyCommand ssh-proxy %h %p
93:
94: Host *.fr
1.96 markus 95: PublicKeyAuthentication no
1.1 deraadt 96:
97: Host *.su
1.266 djm 98: Ciphers aes128-ctr
1.1 deraadt 99: PasswordAuthentication no
100:
1.144 reyk 101: Host vpn.fake.com
102: Tunnel yes
103: TunnelDevice 3
104:
1.1 deraadt 105: # Defaults for various options
106: Host *
107: ForwardAgent no
1.50 markus 108: ForwardX11 no
1.1 deraadt 109: PasswordAuthentication yes
110: StrictHostKeyChecking yes
1.126 markus 111: TcpKeepAlive no
1.1 deraadt 112: IdentityFile ~/.ssh/identity
113: Port 22
114: EscapeChar ~
115:
116: */
117:
1.252 djm 118: static int read_config_file_depth(const char *filename, struct passwd *pw,
119: const char *host, const char *original_host, Options *options,
1.302 djm 120: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 121: static int process_config_line_depth(Options *options, struct passwd *pw,
122: const char *host, const char *original_host, char *line,
1.302 djm 123: const char *filename, int linenum, int *activep, int flags,
124: int *want_final_pass, int depth);
1.252 djm 125:
1.1 deraadt 126: /* Keyword tokens. */
127:
1.17 markus 128: typedef enum {
129: oBadOption,
1.252 djm 130: oHost, oMatch, oInclude,
1.186 djm 131: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
132: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 133: oPasswordAuthentication,
1.59 markus 134: oChallengeResponseAuthentication, oXAuthLocation,
1.317 dtucker 135: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.253 markus 136: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 137: oUser, oEscapeChar, oProxyCommand,
1.17 markus 138: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
139: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 140: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 141: oLogFacility, oLogLevel, oLogVerbose, 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 },
1.339 djm 252: { "logverbose", oLogVerbose },
1.71 markus 253: { "dynamicforward", oDynamicForward },
1.67 markus 254: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 255: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 256: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 257: { "bindaddress", oBindAddress },
1.282 djm 258: { "bindinterface", oBindInterface },
1.93 deraadt 259: { "clearallforwardings", oClearAllForwardings },
1.101 markus 260: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 261: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 262: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 263: { "rekeylimit", oRekeyLimit },
1.111 djm 264: { "connecttimeout", oConnectTimeout },
1.112 djm 265: { "addressfamily", oAddressFamily },
1.127 markus 266: { "serveraliveinterval", oServerAliveInterval },
267: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 268: { "sendenv", oSendEnv },
1.290 djm 269: { "setenv", oSetEnv },
1.132 djm 270: { "controlpath", oControlPath },
271: { "controlmaster", oControlMaster },
1.187 djm 272: { "controlpersist", oControlPersist },
1.136 djm 273: { "hashknownhosts", oHashKnownHosts },
1.252 djm 274: { "include", oInclude },
1.144 reyk 275: { "tunnel", oTunnel },
276: { "tunneldevice", oTunnelDevice },
277: { "localcommand", oLocalCommand },
278: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 279: { "remotecommand", oRemoteCommand },
1.167 grunk 280: { "visualhostkey", oVisualHostKey },
1.189 djm 281: { "kexalgorithms", oKexAlgorithms },
1.190 djm 282: { "ipqos", oIPQoS },
1.192 djm 283: { "requesttty", oRequestTTY },
1.205 djm 284: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 285: { "canonicaldomains", oCanonicalDomains },
1.209 djm 286: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
287: { "canonicalizehostname", oCanonicalizeHostname },
288: { "canonicalizemaxdots", oCanonicalizeMaxDots },
289: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 290: { "streamlocalbindmask", oStreamLocalBindMask },
291: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 292: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 293: { "fingerprinthash", oFingerprintHash },
1.229 djm 294: { "updatehostkeys", oUpdateHostkeys },
1.230 djm 295: { "hostbasedkeytypes", oHostbasedKeyTypes },
1.238 markus 296: { "pubkeyacceptedkeytypes", oPubkeyAcceptedKeyTypes },
1.199 djm 297: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 298: { "proxyjump", oProxyJump },
1.318 dtucker 299: { "securitykeyprovider", oSecurityKeyProvider },
1.171 djm 300:
1.92 stevesk 301: { NULL, oBadOption }
1.13 markus 302: };
303:
1.320 dtucker 304: static char *kex_default_pk_alg_filtered;
305:
306: const char *
307: kex_default_pk_alg(void)
308: {
309: if (kex_default_pk_alg_filtered == NULL)
310: fatal("kex_default_pk_alg not initialized.");
311: return kex_default_pk_alg_filtered;
312: }
313:
1.327 dtucker 314: char *
315: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
316: const char *user)
317: {
318: struct ssh_digest_ctx *md;
319: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
320:
321: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
322: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
323: ssh_digest_update(md, host, strlen(host)) < 0 ||
324: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
325: ssh_digest_update(md, user, strlen(user)) < 0 ||
326: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 327: fatal_f("mux digest failed");
1.327 dtucker 328: ssh_digest_free(md);
329: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
330: }
331:
1.19 markus 332: /*
333: * Adds a local TCP/IP port forward to options. Never returns if there is an
334: * error.
335: */
1.1 deraadt 336:
1.26 markus 337: void
1.220 millert 338: add_local_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_local_forwards; i++) {
345: if (forward_equals(newfwd, options->local_forwards + i))
346: return;
347: }
1.234 deraadt 348: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 349: options->num_local_forwards + 1,
350: sizeof(*options->local_forwards));
1.17 markus 351: fwd = &options->local_forwards[options->num_local_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;
1.1 deraadt 359: }
360:
1.19 markus 361: /*
362: * Adds a remote TCP/IP port forward to options. Never returns if there is
363: * an error.
364: */
1.1 deraadt 365:
1.26 markus 366: void
1.220 millert 367: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 368: {
1.220 millert 369: struct Forward *fwd;
1.251 djm 370: int i;
1.185 djm 371:
1.251 djm 372: /* Don't add duplicates */
373: for (i = 0; i < options->num_remote_forwards; i++) {
374: if (forward_equals(newfwd, options->remote_forwards + i))
375: return;
376: }
1.234 deraadt 377: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 378: options->num_remote_forwards + 1,
379: sizeof(*options->remote_forwards));
1.17 markus 380: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 381:
1.172 stevesk 382: fwd->listen_host = newfwd->listen_host;
1.135 djm 383: fwd->listen_port = newfwd->listen_port;
1.220 millert 384: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 385: fwd->connect_host = newfwd->connect_host;
1.135 djm 386: fwd->connect_port = newfwd->connect_port;
1.220 millert 387: fwd->connect_path = newfwd->connect_path;
1.194 markus 388: fwd->handle = newfwd->handle;
1.184 markus 389: fwd->allocated_port = 0;
1.1 deraadt 390: }
391:
1.90 stevesk 392: static void
393: clear_forwardings(Options *options)
394: {
395: int i;
396:
1.135 djm 397: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 398: free(options->local_forwards[i].listen_host);
1.220 millert 399: free(options->local_forwards[i].listen_path);
1.202 djm 400: free(options->local_forwards[i].connect_host);
1.220 millert 401: free(options->local_forwards[i].connect_path);
1.135 djm 402: }
1.185 djm 403: if (options->num_local_forwards > 0) {
1.202 djm 404: free(options->local_forwards);
1.185 djm 405: options->local_forwards = NULL;
406: }
1.90 stevesk 407: options->num_local_forwards = 0;
1.135 djm 408: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 409: free(options->remote_forwards[i].listen_host);
1.220 millert 410: free(options->remote_forwards[i].listen_path);
1.202 djm 411: free(options->remote_forwards[i].connect_host);
1.220 millert 412: free(options->remote_forwards[i].connect_path);
1.135 djm 413: }
1.185 djm 414: if (options->num_remote_forwards > 0) {
1.202 djm 415: free(options->remote_forwards);
1.185 djm 416: options->remote_forwards = NULL;
417: }
1.90 stevesk 418: options->num_remote_forwards = 0;
1.145 reyk 419: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 420: }
421:
1.195 dtucker 422: void
1.241 djm 423: add_certificate_file(Options *options, const char *path, int userprovided)
424: {
425: int i;
426:
427: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
428: fatal("Too many certificate files specified (max %d)",
429: SSH_MAX_CERTIFICATE_FILES);
430:
431: /* Avoid registering duplicates */
432: for (i = 0; i < options->num_certificate_files; i++) {
433: if (options->certificate_file_userprovided[i] == userprovided &&
434: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 435: debug2_f("ignoring duplicate key %s", path);
1.241 djm 436: return;
437: }
438: }
439:
440: options->certificate_file_userprovided[options->num_certificate_files] =
441: userprovided;
442: options->certificate_files[options->num_certificate_files++] =
443: xstrdup(path);
444: }
445:
446: void
1.195 dtucker 447: add_identity_file(Options *options, const char *dir, const char *filename,
448: int userprovided)
449: {
450: char *path;
1.219 djm 451: int i;
1.195 dtucker 452:
453: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
454: fatal("Too many identity files specified (max %d)",
455: SSH_MAX_IDENTITY_FILES);
456:
457: if (dir == NULL) /* no dir, filename is absolute */
458: path = xstrdup(filename);
1.276 djm 459: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
460: fatal("Identity file path %s too long", path);
1.219 djm 461:
462: /* Avoid registering duplicates */
463: for (i = 0; i < options->num_identity_files; i++) {
464: if (options->identity_file_userprovided[i] == userprovided &&
465: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 466: debug2_f("ignoring duplicate key %s", path);
1.219 djm 467: free(path);
468: return;
469: }
470: }
1.195 dtucker 471:
472: options->identity_file_userprovided[options->num_identity_files] =
473: userprovided;
474: options->identity_files[options->num_identity_files++] = path;
475: }
476:
1.206 djm 477: int
478: default_ssh_port(void)
479: {
480: static int port;
481: struct servent *sp;
482:
483: if (port == 0) {
484: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
485: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
486: }
487: return port;
488: }
489:
490: /*
491: * Execute a command in a shell.
492: * Return its exit status or -1 on abnormal exit.
493: */
494: static int
495: execute_in_shell(const char *cmd)
496: {
1.243 dtucker 497: char *shell;
1.206 djm 498: pid_t pid;
1.337 djm 499: int status;
1.206 djm 500:
501: if ((shell = getenv("SHELL")) == NULL)
502: shell = _PATH_BSHELL;
1.308 djm 503:
504: if (access(shell, X_OK) == -1) {
505: fatal("Shell \"%s\" is not executable: %s",
506: shell, strerror(errno));
507: }
1.206 djm 508:
509: debug("Executing command: '%.500s'", cmd);
510:
511: /* Fork and execute the command. */
512: if ((pid = fork()) == 0) {
1.245 djm 513: char *argv[4];
1.206 djm 514:
1.337 djm 515: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 516: fatal_f("stdfd_devnull failed");
1.206 djm 517: closefrom(STDERR_FILENO + 1);
1.245 djm 518:
519: argv[0] = shell;
520: argv[1] = "-c";
521: argv[2] = xstrdup(cmd);
522: argv[3] = NULL;
1.206 djm 523:
524: execv(argv[0], argv);
525: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
526: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 527: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 528: kill(getpid(), SIGTERM);
529: _exit(1);
530: }
531: /* Parent. */
1.307 deraadt 532: if (pid == -1)
1.340 djm 533: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 534:
535: while (waitpid(pid, &status, 0) == -1) {
536: if (errno != EINTR && errno != EAGAIN)
1.340 djm 537: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 538: }
539: if (!WIFEXITED(status)) {
540: error("command '%.100s' exited abnormally", cmd);
541: return -1;
1.221 djm 542: }
1.206 djm 543: debug3("command returned status %d", WEXITSTATUS(status));
544: return WEXITSTATUS(status);
545: }
546:
547: /*
548: * Parse and execute a Match directive.
549: */
550: static int
551: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 552: const char *host_arg, const char *original_host, int final_pass,
553: int *want_final_pass, const char *filename, int linenum)
1.206 djm 554: {
1.221 djm 555: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 556: const char *ruser;
1.221 djm 557: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 558: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 559: char uidstr[32];
1.206 djm 560:
561: /*
562: * Configuration is likely to be incomplete at this point so we
563: * must be prepared to use default values.
564: */
565: port = options->port <= 0 ? default_ssh_port() : options->port;
566: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 567: if (final_pass) {
1.250 djm 568: host = xstrdup(options->hostname);
569: } else if (options->hostname != NULL) {
1.212 djm 570: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 571: host = percent_expand(options->hostname,
572: "h", host_arg, (char *)NULL);
1.250 djm 573: } else {
1.211 djm 574: host = xstrdup(host_arg);
1.250 djm 575: }
1.206 djm 576:
1.221 djm 577: debug2("checking match for '%s' host %s originally %s",
578: cp, host, original_host);
579: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
580: criteria = NULL;
581: this_result = 1;
582: if ((negate = attrib[0] == '!'))
583: attrib++;
584: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 585: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 586: if (attributes > 1 ||
1.213 dtucker 587: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 588: error("%.200s line %d: '%s' cannot be combined "
589: "with other Match attributes",
590: filename, linenum, oattrib);
1.213 dtucker 591: result = -1;
592: goto out;
593: }
1.221 djm 594: if (result)
595: result = negate ? 0 : 1;
1.213 dtucker 596: goto out;
597: }
1.221 djm 598: attributes++;
1.302 djm 599: if (strcasecmp(attrib, "canonical") == 0 ||
600: strcasecmp(attrib, "final") == 0) {
601: /*
602: * If the config requests "Match final" then remember
603: * this so we can perform a second pass later.
604: */
605: if (strcasecmp(attrib, "final") == 0 &&
606: want_final_pass != NULL)
607: *want_final_pass = 1;
608: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 609: if (r == (negate ? 1 : 0))
610: this_result = result = 0;
611: debug3("%.200s line %d: %smatched '%s'",
612: filename, linenum,
613: this_result ? "" : "not ", oattrib);
614: continue;
615: }
616: /* All other criteria require an argument */
1.206 djm 617: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
618: error("Missing Match criteria for %s", attrib);
1.211 djm 619: result = -1;
620: goto out;
1.206 djm 621: }
622: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 623: criteria = xstrdup(host);
1.235 djm 624: r = match_hostname(host, arg) == 1;
1.221 djm 625: if (r == (negate ? 1 : 0))
626: this_result = result = 0;
1.206 djm 627: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 628: criteria = xstrdup(original_host);
1.235 djm 629: r = match_hostname(original_host, arg) == 1;
1.221 djm 630: if (r == (negate ? 1 : 0))
631: this_result = result = 0;
1.206 djm 632: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 633: criteria = xstrdup(ruser);
1.235 djm 634: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 635: if (r == (negate ? 1 : 0))
636: this_result = result = 0;
1.206 djm 637: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 638: criteria = xstrdup(pw->pw_name);
1.235 djm 639: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 640: if (r == (negate ? 1 : 0))
641: this_result = result = 0;
1.210 djm 642: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 643: char *conn_hash_hex, *keyalias;
1.327 dtucker 644:
1.206 djm 645: if (gethostname(thishost, sizeof(thishost)) == -1)
646: fatal("gethostname: %s", strerror(errno));
647: strlcpy(shorthost, thishost, sizeof(shorthost));
648: shorthost[strcspn(thishost, ".")] = '\0';
649: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 650: snprintf(uidstr, sizeof(uidstr), "%llu",
651: (unsigned long long)pw->pw_uid);
1.327 dtucker 652: conn_hash_hex = ssh_connection_hash(thishost, host,
1.328 dtucker 653: portstr, ruser);
1.333 dtucker 654: keyalias = options->host_key_alias ?
655: options->host_key_alias : host;
1.206 djm 656:
657: cmd = percent_expand(arg,
1.327 dtucker 658: "C", conn_hash_hex,
1.206 djm 659: "L", shorthost,
660: "d", pw->pw_dir,
661: "h", host,
1.333 dtucker 662: "k", keyalias,
1.206 djm 663: "l", thishost,
1.221 djm 664: "n", original_host,
1.206 djm 665: "p", portstr,
666: "r", ruser,
667: "u", pw->pw_name,
1.288 djm 668: "i", uidstr,
1.206 djm 669: (char *)NULL);
1.327 dtucker 670: free(conn_hash_hex);
1.217 djm 671: if (result != 1) {
672: /* skip execution if prior predicate failed */
1.221 djm 673: debug3("%.200s line %d: skipped exec "
674: "\"%.100s\"", filename, linenum, cmd);
675: free(cmd);
676: continue;
677: }
678: r = execute_in_shell(cmd);
679: if (r == -1) {
680: fatal("%.200s line %d: match exec "
681: "'%.100s' error", filename,
682: linenum, cmd);
1.217 djm 683: }
1.221 djm 684: criteria = xstrdup(cmd);
1.206 djm 685: free(cmd);
1.221 djm 686: /* Force exit status to boolean */
687: r = r == 0;
688: if (r == (negate ? 1 : 0))
689: this_result = result = 0;
1.206 djm 690: } else {
691: error("Unsupported Match attribute %s", attrib);
1.211 djm 692: result = -1;
693: goto out;
1.206 djm 694: }
1.221 djm 695: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
696: filename, linenum, this_result ? "": "not ",
697: oattrib, criteria);
698: free(criteria);
1.213 dtucker 699: }
700: if (attributes == 0) {
701: error("One or more attributes required for Match");
702: result = -1;
703: goto out;
1.206 djm 704: }
1.221 djm 705: out:
706: if (result != -1)
707: debug2("match %sfound", result ? "" : "not ");
1.206 djm 708: *condition = cp;
1.211 djm 709: free(host);
1.206 djm 710: return result;
711: }
712:
1.286 djm 713: /* Remove environment variable by pattern */
714: static void
715: rm_env(Options *options, const char *arg, const char *filename, int linenum)
716: {
1.330 djm 717: int i, j, onum_send_env = options->num_send_env;
1.286 djm 718: char *cp;
719:
720: /* Remove an environment variable */
721: for (i = 0; i < options->num_send_env; ) {
722: cp = xstrdup(options->send_env[i]);
723: if (!match_pattern(cp, arg + 1)) {
724: free(cp);
725: i++;
726: continue;
727: }
728: debug3("%s line %d: removing environment %s",
729: filename, linenum, cp);
730: free(cp);
731: free(options->send_env[i]);
732: options->send_env[i] = NULL;
733: for (j = i; j < options->num_send_env - 1; j++) {
734: options->send_env[j] = options->send_env[j + 1];
735: options->send_env[j + 1] = NULL;
736: }
737: options->num_send_env--;
738: /* NB. don't increment i */
1.330 djm 739: }
740: if (onum_send_env != options->num_send_env) {
741: options->send_env = xrecallocarray(options->send_env,
742: onum_send_env, options->num_send_env,
743: sizeof(*options->send_env));
1.286 djm 744: }
745: }
746:
1.19 markus 747: /*
1.70 stevesk 748: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 749: */
1.26 markus 750: static OpCodes
1.199 djm 751: parse_token(const char *cp, const char *filename, int linenum,
752: const char *ignored_unknown)
1.1 deraadt 753: {
1.199 djm 754: int i;
1.1 deraadt 755:
1.17 markus 756: for (i = 0; keywords[i].name; i++)
1.199 djm 757: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 758: return keywords[i].opcode;
1.235 djm 759: if (ignored_unknown != NULL &&
760: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 761: return oIgnoredUnknownOption;
1.75 stevesk 762: error("%s: line %d: Bad configuration option: %s",
763: filename, linenum, cp);
1.17 markus 764: return oBadOption;
1.1 deraadt 765: }
766:
1.207 djm 767: /* Multistate option parsing */
768: struct multistate {
769: char *key;
770: int value;
771: };
772: static const struct multistate multistate_flag[] = {
773: { "true", 1 },
774: { "false", 0 },
775: { "yes", 1 },
776: { "no", 0 },
777: { NULL, -1 }
778: };
779: static const struct multistate multistate_yesnoask[] = {
780: { "true", 1 },
781: { "false", 0 },
782: { "yes", 1 },
783: { "no", 0 },
784: { "ask", 2 },
785: { NULL, -1 }
786: };
1.278 djm 787: static const struct multistate multistate_strict_hostkey[] = {
788: { "true", SSH_STRICT_HOSTKEY_YES },
789: { "false", SSH_STRICT_HOSTKEY_OFF },
790: { "yes", SSH_STRICT_HOSTKEY_YES },
791: { "no", SSH_STRICT_HOSTKEY_OFF },
792: { "ask", SSH_STRICT_HOSTKEY_ASK },
793: { "off", SSH_STRICT_HOSTKEY_OFF },
794: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
795: { NULL, -1 }
796: };
1.246 jcs 797: static const struct multistate multistate_yesnoaskconfirm[] = {
798: { "true", 1 },
799: { "false", 0 },
800: { "yes", 1 },
801: { "no", 0 },
802: { "ask", 2 },
803: { "confirm", 3 },
804: { NULL, -1 }
805: };
1.207 djm 806: static const struct multistate multistate_addressfamily[] = {
807: { "inet", AF_INET },
808: { "inet6", AF_INET6 },
809: { "any", AF_UNSPEC },
810: { NULL, -1 }
811: };
812: static const struct multistate multistate_controlmaster[] = {
813: { "true", SSHCTL_MASTER_YES },
814: { "yes", SSHCTL_MASTER_YES },
815: { "false", SSHCTL_MASTER_NO },
816: { "no", SSHCTL_MASTER_NO },
817: { "auto", SSHCTL_MASTER_AUTO },
818: { "ask", SSHCTL_MASTER_ASK },
819: { "autoask", SSHCTL_MASTER_AUTO_ASK },
820: { NULL, -1 }
821: };
822: static const struct multistate multistate_tunnel[] = {
823: { "ethernet", SSH_TUNMODE_ETHERNET },
824: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
825: { "true", SSH_TUNMODE_DEFAULT },
826: { "yes", SSH_TUNMODE_DEFAULT },
827: { "false", SSH_TUNMODE_NO },
828: { "no", SSH_TUNMODE_NO },
829: { NULL, -1 }
830: };
831: static const struct multistate multistate_requesttty[] = {
832: { "true", REQUEST_TTY_YES },
833: { "yes", REQUEST_TTY_YES },
834: { "false", REQUEST_TTY_NO },
835: { "no", REQUEST_TTY_NO },
836: { "force", REQUEST_TTY_FORCE },
837: { "auto", REQUEST_TTY_AUTO },
838: { NULL, -1 }
839: };
1.209 djm 840: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 841: { "true", SSH_CANONICALISE_YES },
842: { "false", SSH_CANONICALISE_NO },
843: { "yes", SSH_CANONICALISE_YES },
844: { "no", SSH_CANONICALISE_NO },
845: { "always", SSH_CANONICALISE_ALWAYS },
846: { NULL, -1 }
847: };
1.322 dtucker 848: static const struct multistate multistate_compression[] = {
849: #ifdef WITH_ZLIB
850: { "yes", COMP_ZLIB },
851: #endif
852: { "no", COMP_NONE },
853: { NULL, -1 }
854: };
1.207 djm 855:
1.334 djm 856: static int
857: parse_multistate_value(const char *arg, const char *filename, int linenum,
858: const struct multistate *multistate_ptr)
859: {
860: int i;
861:
862: if (!arg || *arg == '\0')
863: fatal("%s line %d: missing argument.", filename, linenum);
864: for (i = 0; multistate_ptr[i].key != NULL; i++) {
865: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
866: return multistate_ptr[i].value;
867: }
868: return -1;
869: }
870:
1.19 markus 871: /*
872: * Processes a single option line as used in the configuration files. This
873: * only sets those values that have not already been set.
874: */
1.14 markus 875: int
1.206 djm 876: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 877: const char *original_host, char *line, const char *filename,
878: int linenum, int *activep, int flags)
1.1 deraadt 879: {
1.252 djm 880: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 881: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 882: }
883:
884: #define WHITESPACE " \t\r\n"
885: static int
886: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
887: const char *original_host, char *line, const char *filename,
1.302 djm 888: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 889: {
1.193 djm 890: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
1.339 djm 891: char **cpptr, ***cppptr, fwdarg[256];
1.199 djm 892: u_int i, *uintptr, max_entries = 0;
1.252 djm 893: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 894: int remotefwd, dynamicfwd;
1.164 dtucker 895: LogLevel *log_level_ptr;
1.271 dtucker 896: SyslogFacility *log_facility_ptr;
1.201 dtucker 897: long long val64;
1.102 markus 898: size_t len;
1.220 millert 899: struct Forward fwd;
1.207 djm 900: const struct multistate *multistate_ptr;
1.208 djm 901: struct allowed_cname *cname;
1.252 djm 902: glob_t gl;
1.281 dtucker 903: const char *errstr;
1.106 djm 904:
1.206 djm 905: if (activep == NULL) { /* We are processing a command line directive */
906: cmdline = 1;
907: activep = &cmdline;
908: }
909:
1.267 djm 910: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 911: if ((len = strlen(line)) == 0)
912: return 0;
913: for (len--; len > 0; len--) {
1.267 djm 914: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 915: break;
916: line[len] = '\0';
917: }
1.1 deraadt 918:
1.42 provos 919: s = line;
920: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 921: if ((keyword = strdelim(&s)) == NULL)
922: return 0;
1.42 provos 923: /* Ignore leading whitespace. */
924: if (*keyword == '\0')
1.43 markus 925: keyword = strdelim(&s);
1.56 deraadt 926: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 927: return 0;
1.199 djm 928: /* Match lowercase keyword */
1.207 djm 929: lowercase(keyword);
1.17 markus 930:
1.199 djm 931: opcode = parse_token(keyword, filename, linenum,
932: options->ignored_unknown);
1.17 markus 933:
934: switch (opcode) {
935: case oBadOption:
1.19 markus 936: /* don't panic, but count bad options */
937: return -1;
1.273 djm 938: case oIgnore:
939: return 0;
1.199 djm 940: case oIgnoredUnknownOption:
941: debug("%s line %d: Ignored unknown option \"%s\"",
942: filename, linenum, keyword);
943: return 0;
1.111 djm 944: case oConnectTimeout:
945: intptr = &options->connection_timeout;
1.127 markus 946: parse_time:
1.111 djm 947: arg = strdelim(&s);
948: if (!arg || *arg == '\0')
949: fatal("%s line %d: missing time value.",
950: filename, linenum);
1.221 djm 951: if (strcmp(arg, "none") == 0)
952: value = -1;
953: else if ((value = convtime(arg)) == -1)
1.111 djm 954: fatal("%s line %d: invalid time value.",
955: filename, linenum);
1.160 dtucker 956: if (*activep && *intptr == -1)
1.111 djm 957: *intptr = value;
958: break;
959:
1.17 markus 960: case oForwardAgent:
961: intptr = &options->forward_agent;
1.319 djm 962:
963: arg = strdelim(&s);
964: if (!arg || *arg == '\0')
965: fatal("%s line %d: missing argument.",
966: filename, linenum);
967:
968: value = -1;
969: multistate_ptr = multistate_flag;
970: for (i = 0; multistate_ptr[i].key != NULL; i++) {
971: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
972: value = multistate_ptr[i].value;
973: break;
974: }
975: }
976: if (value != -1) {
977: if (*activep && *intptr == -1)
978: *intptr = value;
979: break;
980: }
981: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
982: if (*activep && *intptr == -1)
983: *intptr = 1;
984:
985: charptr = &options->forward_agent_sock_path;
986: goto parse_agent_path;
987:
988: case oForwardX11:
989: intptr = &options->forward_x11;
1.207 djm 990: parse_flag:
991: multistate_ptr = multistate_flag;
992: parse_multistate:
1.42 provos 993: arg = strdelim(&s);
1.334 djm 994: if ((value = parse_multistate_value(arg, filename, linenum,
995: multistate_ptr)) == -1) {
1.207 djm 996: fatal("%s line %d: unsupported option \"%s\".",
997: filename, linenum, arg);
1.334 djm 998: }
1.17 markus 999: if (*activep && *intptr == -1)
1000: *intptr = value;
1001: break;
1002:
1.123 markus 1003: case oForwardX11Trusted:
1004: intptr = &options->forward_x11_trusted;
1005: goto parse_flag;
1.221 djm 1006:
1.186 djm 1007: case oForwardX11Timeout:
1008: intptr = &options->forward_x11_timeout;
1009: goto parse_time;
1.123 markus 1010:
1.17 markus 1011: case oGatewayPorts:
1.220 millert 1012: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1013: goto parse_flag;
1014:
1.153 markus 1015: case oExitOnForwardFailure:
1016: intptr = &options->exit_on_forward_failure;
1017: goto parse_flag;
1018:
1.17 markus 1019: case oPasswordAuthentication:
1020: intptr = &options->password_authentication;
1021: goto parse_flag;
1022:
1.48 markus 1023: case oKbdInteractiveAuthentication:
1024: intptr = &options->kbd_interactive_authentication;
1025: goto parse_flag;
1026:
1027: case oKbdInteractiveDevices:
1028: charptr = &options->kbd_interactive_devices;
1029: goto parse_string;
1030:
1.50 markus 1031: case oPubkeyAuthentication:
1032: intptr = &options->pubkey_authentication;
1.30 markus 1033: goto parse_flag;
1034:
1.72 markus 1035: case oHostbasedAuthentication:
1036: intptr = &options->hostbased_authentication;
1037: goto parse_flag;
1038:
1.59 markus 1039: case oChallengeResponseAuthentication:
1.78 markus 1040: intptr = &options->challenge_response_authentication;
1.17 markus 1041: goto parse_flag;
1.108 jakob 1042:
1.118 markus 1043: case oGssAuthentication:
1044: intptr = &options->gss_authentication;
1045: goto parse_flag;
1046:
1047: case oGssDelegateCreds:
1048: intptr = &options->gss_deleg_creds;
1049: goto parse_flag;
1050:
1.17 markus 1051: case oBatchMode:
1052: intptr = &options->batch_mode;
1053: goto parse_flag;
1054:
1055: case oCheckHostIP:
1056: intptr = &options->check_host_ip;
1.167 grunk 1057: goto parse_flag;
1.17 markus 1058:
1.107 jakob 1059: case oVerifyHostKeyDNS:
1060: intptr = &options->verify_host_key_dns;
1.207 djm 1061: multistate_ptr = multistate_yesnoask;
1062: goto parse_multistate;
1.107 jakob 1063:
1.17 markus 1064: case oStrictHostKeyChecking:
1065: intptr = &options->strict_host_key_checking;
1.278 djm 1066: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1067: goto parse_multistate;
1.17 markus 1068:
1069: case oCompression:
1070: intptr = &options->compression;
1.322 dtucker 1071: multistate_ptr = multistate_compression;
1072: goto parse_multistate;
1.17 markus 1073:
1.126 markus 1074: case oTCPKeepAlive:
1075: intptr = &options->tcp_keep_alive;
1.17 markus 1076: goto parse_flag;
1077:
1.91 markus 1078: case oNoHostAuthenticationForLocalhost:
1079: intptr = &options->no_host_authentication_for_localhost;
1080: goto parse_flag;
1081:
1.17 markus 1082: case oNumberOfPasswordPrompts:
1083: intptr = &options->number_of_password_prompts;
1084: goto parse_int;
1085:
1.105 markus 1086: case oRekeyLimit:
1087: arg = strdelim(&s);
1088: if (!arg || *arg == '\0')
1.198 dtucker 1089: fatal("%.200s line %d: Missing argument.", filename,
1090: linenum);
1091: if (strcmp(arg, "default") == 0) {
1092: val64 = 0;
1093: } else {
1.200 dtucker 1094: if (scan_scaled(arg, &val64) == -1)
1095: fatal("%.200s line %d: Bad number '%s': %s",
1096: filename, linenum, arg, strerror(errno));
1.198 dtucker 1097: if (val64 != 0 && val64 < 16)
1098: fatal("%.200s line %d: RekeyLimit too small",
1099: filename, linenum);
1.105 markus 1100: }
1.165 djm 1101: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1102: options->rekey_limit = val64;
1.198 dtucker 1103: if (s != NULL) { /* optional rekey interval present */
1104: if (strcmp(s, "none") == 0) {
1105: (void)strdelim(&s); /* discard */
1106: break;
1107: }
1108: intptr = &options->rekey_interval;
1109: goto parse_time;
1110: }
1.105 markus 1111: break;
1112:
1.17 markus 1113: case oIdentityFile:
1.42 provos 1114: arg = strdelim(&s);
1.40 ho 1115: if (!arg || *arg == '\0')
1.17 markus 1116: fatal("%.200s line %d: Missing argument.", filename, linenum);
1117: if (*activep) {
1.50 markus 1118: intptr = &options->num_identity_files;
1.27 markus 1119: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 1120: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 1121: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 1122: add_identity_file(options, NULL,
1123: arg, flags & SSHCONF_USERCONF);
1.17 markus 1124: }
1125: break;
1126:
1.241 djm 1127: case oCertificateFile:
1128: arg = strdelim(&s);
1129: if (!arg || *arg == '\0')
1130: fatal("%.200s line %d: Missing argument.",
1131: filename, linenum);
1132: if (*activep) {
1133: intptr = &options->num_certificate_files;
1134: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1135: fatal("%.200s line %d: Too many certificate "
1136: "files specified (max %d).",
1137: filename, linenum,
1138: SSH_MAX_CERTIFICATE_FILES);
1139: }
1140: add_certificate_file(options, arg,
1141: flags & SSHCONF_USERCONF);
1142: }
1143: break;
1144:
1.34 markus 1145: case oXAuthLocation:
1146: charptr=&options->xauth_location;
1147: goto parse_string;
1148:
1.17 markus 1149: case oUser:
1150: charptr = &options->user;
1151: parse_string:
1.42 provos 1152: arg = strdelim(&s);
1.40 ho 1153: if (!arg || *arg == '\0')
1.193 djm 1154: fatal("%.200s line %d: Missing argument.",
1155: filename, linenum);
1.17 markus 1156: if (*activep && *charptr == NULL)
1.38 provos 1157: *charptr = xstrdup(arg);
1.17 markus 1158: break;
1159:
1160: case oGlobalKnownHostsFile:
1.193 djm 1161: cpptr = (char **)&options->system_hostfiles;
1162: uintptr = &options->num_system_hostfiles;
1163: max_entries = SSH_MAX_HOSTS_FILES;
1164: parse_char_array:
1165: if (*activep && *uintptr == 0) {
1166: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1167: if ((*uintptr) >= max_entries)
1168: fatal("%s line %d: "
1.329 dtucker 1169: "too many known hosts files.",
1.193 djm 1170: filename, linenum);
1171: cpptr[(*uintptr)++] = xstrdup(arg);
1172: }
1173: }
1174: return 0;
1.17 markus 1175:
1176: case oUserKnownHostsFile:
1.193 djm 1177: cpptr = (char **)&options->user_hostfiles;
1178: uintptr = &options->num_user_hostfiles;
1179: max_entries = SSH_MAX_HOSTS_FILES;
1180: goto parse_char_array;
1.27 markus 1181:
1.306 jmc 1182: case oHostname:
1.17 markus 1183: charptr = &options->hostname;
1184: goto parse_string;
1185:
1.52 markus 1186: case oHostKeyAlias:
1187: charptr = &options->host_key_alias;
1188: goto parse_string;
1189:
1.67 markus 1190: case oPreferredAuthentications:
1191: charptr = &options->preferred_authentications;
1192: goto parse_string;
1193:
1.77 markus 1194: case oBindAddress:
1195: charptr = &options->bind_address;
1196: goto parse_string;
1197:
1.282 djm 1198: case oBindInterface:
1199: charptr = &options->bind_interface;
1200: goto parse_string;
1201:
1.183 markus 1202: case oPKCS11Provider:
1203: charptr = &options->pkcs11_provider;
1.86 markus 1204: goto parse_string;
1.85 jakob 1205:
1.310 djm 1206: case oSecurityKeyProvider:
1207: charptr = &options->sk_provider;
1208: goto parse_string;
1209:
1.17 markus 1210: case oProxyCommand:
1.144 reyk 1211: charptr = &options->proxy_command;
1.257 djm 1212: /* Ignore ProxyCommand if ProxyJump already specified */
1213: if (options->jump_host != NULL)
1214: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1215: parse_command:
1.113 markus 1216: if (s == NULL)
1217: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1218: len = strspn(s, WHITESPACE "=");
1.17 markus 1219: if (*activep && *charptr == NULL)
1.102 markus 1220: *charptr = xstrdup(s + len);
1.17 markus 1221: return 0;
1222:
1.257 djm 1223: case oProxyJump:
1224: if (s == NULL) {
1225: fatal("%.200s line %d: Missing argument.",
1226: filename, linenum);
1227: }
1228: len = strspn(s, WHITESPACE "=");
1229: if (parse_jump(s + len, options, *activep) == -1) {
1230: fatal("%.200s line %d: Invalid ProxyJump \"%s\"",
1231: filename, linenum, s + len);
1232: }
1233: return 0;
1234:
1.17 markus 1235: case oPort:
1.300 naddy 1236: arg = strdelim(&s);
1237: if (!arg || *arg == '\0')
1238: fatal("%.200s line %d: Missing argument.",
1239: filename, linenum);
1240: value = a2port(arg);
1241: if (value <= 0)
1242: fatal("%.200s line %d: Bad port '%s'.",
1243: filename, linenum, arg);
1244: if (*activep && options->port == -1)
1245: options->port = value;
1246: break;
1247:
1248: case oConnectionAttempts:
1249: intptr = &options->connection_attempts;
1.17 markus 1250: parse_int:
1.42 provos 1251: arg = strdelim(&s);
1.281 dtucker 1252: if ((errstr = atoi_err(arg, &value)) != NULL)
1253: fatal("%s line %d: integer value %s.",
1254: filename, linenum, errstr);
1.17 markus 1255: if (*activep && *intptr == -1)
1256: *intptr = value;
1257: break;
1258:
1.25 markus 1259: case oCiphers:
1.42 provos 1260: arg = strdelim(&s);
1.40 ho 1261: if (!arg || *arg == '\0')
1.32 markus 1262: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1263: if (*arg != '-' &&
1264: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.31 markus 1265: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1266: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1267: if (*activep && options->ciphers == NULL)
1.38 provos 1268: options->ciphers = xstrdup(arg);
1.25 markus 1269: break;
1270:
1.62 markus 1271: case oMacs:
1272: arg = strdelim(&s);
1273: if (!arg || *arg == '\0')
1274: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.309 naddy 1275: if (*arg != '-' &&
1276: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.305 dtucker 1277: fatal("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1278: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1279: if (*activep && options->macs == NULL)
1280: options->macs = xstrdup(arg);
1281: break;
1282:
1.189 djm 1283: case oKexAlgorithms:
1284: arg = strdelim(&s);
1285: if (!arg || *arg == '\0')
1286: fatal("%.200s line %d: Missing argument.",
1287: filename, linenum);
1.268 djm 1288: if (*arg != '-' &&
1.309 naddy 1289: !kex_names_valid(*arg == '+' || *arg == '^' ?
1290: arg + 1 : arg))
1.189 djm 1291: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1292: filename, linenum, arg ? arg : "<NONE>");
1293: if (*activep && options->kex_algorithms == NULL)
1294: options->kex_algorithms = xstrdup(arg);
1295: break;
1296:
1.76 markus 1297: case oHostKeyAlgorithms:
1.238 markus 1298: charptr = &options->hostkeyalgorithms;
1299: parse_keytypes:
1.76 markus 1300: arg = strdelim(&s);
1301: if (!arg || *arg == '\0')
1.238 markus 1302: fatal("%.200s line %d: Missing argument.",
1303: filename, linenum);
1.268 djm 1304: if (*arg != '-' &&
1.309 naddy 1305: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1306: arg + 1 : arg, 1))
1.238 markus 1307: fatal("%s line %d: Bad key types '%s'.",
1308: filename, linenum, arg ? arg : "<NONE>");
1309: if (*activep && *charptr == NULL)
1310: *charptr = xstrdup(arg);
1.76 markus 1311: break;
1312:
1.298 djm 1313: case oCASignatureAlgorithms:
1314: charptr = &options->ca_sign_algorithms;
1315: goto parse_keytypes;
1316:
1.17 markus 1317: case oLogLevel:
1.164 dtucker 1318: log_level_ptr = &options->log_level;
1.42 provos 1319: arg = strdelim(&s);
1.38 provos 1320: value = log_level_number(arg);
1.95 markus 1321: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1322: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1323: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1324: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1325: *log_level_ptr = (LogLevel) value;
1.17 markus 1326: break;
1327:
1.271 dtucker 1328: case oLogFacility:
1329: log_facility_ptr = &options->log_facility;
1330: arg = strdelim(&s);
1331: value = log_facility_number(arg);
1332: if (value == SYSLOG_FACILITY_NOT_SET)
1333: fatal("%.200s line %d: unsupported log facility '%s'",
1334: filename, linenum, arg ? arg : "<NONE>");
1335: if (*log_facility_ptr == -1)
1336: *log_facility_ptr = (SyslogFacility) value;
1337: break;
1338:
1.339 djm 1339: case oLogVerbose:
1340: cppptr = &options->log_verbose;
1341: uintptr = &options->num_log_verbose;
1342: if (*activep && *uintptr == 0) {
1343: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1344: *cppptr = xrecallocarray(*cppptr, *uintptr,
1345: *uintptr + 1, sizeof(**cppptr));
1346: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1347: }
1348: }
1349: return 0;
1350:
1.88 stevesk 1351: case oLocalForward:
1.17 markus 1352: case oRemoteForward:
1.168 stevesk 1353: case oDynamicForward:
1.42 provos 1354: arg = strdelim(&s);
1.135 djm 1355: if (arg == NULL || *arg == '\0')
1.88 stevesk 1356: fatal("%.200s line %d: Missing port argument.",
1357: filename, linenum);
1.135 djm 1358:
1.279 markus 1359: remotefwd = (opcode == oRemoteForward);
1360: dynamicfwd = (opcode == oDynamicForward);
1361:
1362: if (!dynamicfwd) {
1.168 stevesk 1363: arg2 = strdelim(&s);
1.279 markus 1364: if (arg2 == NULL || *arg2 == '\0') {
1365: if (remotefwd)
1366: dynamicfwd = 1;
1367: else
1368: fatal("%.200s line %d: Missing target "
1369: "argument.", filename, linenum);
1370: } else {
1371: /* construct a string for parse_forward */
1372: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1373: arg2);
1374: }
1375: }
1376: if (dynamicfwd)
1.168 stevesk 1377: strlcpy(fwdarg, arg, sizeof(fwdarg));
1378:
1.279 markus 1379: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0)
1.88 stevesk 1380: fatal("%.200s line %d: Bad forwarding specification.",
1381: filename, linenum);
1.135 djm 1382:
1.88 stevesk 1383: if (*activep) {
1.279 markus 1384: if (remotefwd) {
1385: add_remote_forward(options, &fwd);
1386: } else {
1.135 djm 1387: add_local_forward(options, &fwd);
1.279 markus 1388: }
1.88 stevesk 1389: }
1.17 markus 1390: break;
1.71 markus 1391:
1.90 stevesk 1392: case oClearAllForwardings:
1393: intptr = &options->clear_forwardings;
1394: goto parse_flag;
1395:
1.17 markus 1396: case oHost:
1.206 djm 1397: if (cmdline)
1398: fatal("Host directive not supported as a command-line "
1399: "option");
1.17 markus 1400: *activep = 0;
1.191 djm 1401: arg2 = NULL;
1402: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.252 djm 1403: if ((flags & SSHCONF_NEVERMATCH) != 0)
1404: break;
1.191 djm 1405: negated = *arg == '!';
1406: if (negated)
1407: arg++;
1.38 provos 1408: if (match_pattern(host, arg)) {
1.191 djm 1409: if (negated) {
1410: debug("%.200s line %d: Skipping Host "
1411: "block because of negated match "
1412: "for %.100s", filename, linenum,
1413: arg);
1414: *activep = 0;
1415: break;
1416: }
1417: if (!*activep)
1418: arg2 = arg; /* logged below */
1.17 markus 1419: *activep = 1;
1420: }
1.191 djm 1421: }
1422: if (*activep)
1423: debug("%.200s line %d: Applying options for %.100s",
1424: filename, linenum, arg2);
1.42 provos 1425: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1426: return 0;
1427:
1.206 djm 1428: case oMatch:
1429: if (cmdline)
1430: fatal("Host directive not supported as a command-line "
1431: "option");
1.221 djm 1432: value = match_cfg_line(options, &s, pw, host, original_host,
1.302 djm 1433: flags & SSHCONF_FINAL, want_final_pass,
1434: filename, linenum);
1.206 djm 1435: if (value < 0)
1436: fatal("%.200s line %d: Bad Match condition", filename,
1437: linenum);
1.252 djm 1438: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.206 djm 1439: break;
1440:
1.17 markus 1441: case oEscapeChar:
1442: intptr = &options->escape_char;
1.42 provos 1443: arg = strdelim(&s);
1.40 ho 1444: if (!arg || *arg == '\0')
1.17 markus 1445: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1446: if (strcmp(arg, "none") == 0)
1447: value = SSH_ESCAPECHAR_NONE;
1448: else if (arg[1] == '\0')
1449: value = (u_char) arg[0];
1450: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1451: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1452: value = (u_char) arg[1] & 31;
1.17 markus 1453: else {
1.340 djm 1454: value = 0; /* Avoid compiler warning. */
1.17 markus 1455: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1456: filename, linenum);
1.17 markus 1457: }
1458: if (*activep && *intptr == -1)
1459: *intptr = value;
1.112 djm 1460: break;
1461:
1462: case oAddressFamily:
1.114 djm 1463: intptr = &options->address_family;
1.207 djm 1464: multistate_ptr = multistate_addressfamily;
1465: goto parse_multistate;
1.17 markus 1466:
1.101 markus 1467: case oEnableSSHKeysign:
1468: intptr = &options->enable_ssh_keysign;
1469: goto parse_flag;
1470:
1.128 markus 1471: case oIdentitiesOnly:
1472: intptr = &options->identities_only;
1473: goto parse_flag;
1474:
1.127 markus 1475: case oServerAliveInterval:
1476: intptr = &options->server_alive_interval;
1477: goto parse_time;
1478:
1479: case oServerAliveCountMax:
1480: intptr = &options->server_alive_count_max;
1481: goto parse_int;
1482:
1.130 djm 1483: case oSendEnv:
1484: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1485: if (strchr(arg, '=') != NULL)
1486: fatal("%s line %d: Invalid environment name.",
1487: filename, linenum);
1.137 djm 1488: if (!*activep)
1489: continue;
1.286 djm 1490: if (*arg == '-') {
1491: /* Removing an env var */
1492: rm_env(options, arg, filename, linenum);
1493: continue;
1494: } else {
1495: /* Adding an env var */
1.290 djm 1496: if (options->num_send_env >= INT_MAX)
1.286 djm 1497: fatal("%s line %d: too many send env.",
1498: filename, linenum);
1.290 djm 1499: options->send_env = xrecallocarray(
1500: options->send_env, options->num_send_env,
1.291 djm 1501: options->num_send_env + 1,
1.290 djm 1502: sizeof(*options->send_env));
1.286 djm 1503: options->send_env[options->num_send_env++] =
1504: xstrdup(arg);
1505: }
1.130 djm 1506: }
1507: break;
1508:
1.290 djm 1509: case oSetEnv:
1510: value = options->num_setenv;
1511: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1512: if (strchr(arg, '=') == NULL)
1513: fatal("%s line %d: Invalid SetEnv.",
1514: filename, linenum);
1515: if (!*activep || value != 0)
1516: continue;
1517: /* Adding a setenv var */
1518: if (options->num_setenv >= INT_MAX)
1519: fatal("%s line %d: too many SetEnv.",
1520: filename, linenum);
1521: options->setenv = xrecallocarray(
1522: options->setenv, options->num_setenv,
1523: options->num_setenv + 1, sizeof(*options->setenv));
1524: options->setenv[options->num_setenv++] = xstrdup(arg);
1525: }
1526: break;
1527:
1.132 djm 1528: case oControlPath:
1529: charptr = &options->control_path;
1530: goto parse_string;
1531:
1532: case oControlMaster:
1533: intptr = &options->control_master;
1.207 djm 1534: multistate_ptr = multistate_controlmaster;
1535: goto parse_multistate;
1.132 djm 1536:
1.187 djm 1537: case oControlPersist:
1538: /* no/false/yes/true, or a time spec */
1539: intptr = &options->control_persist;
1540: arg = strdelim(&s);
1541: if (!arg || *arg == '\0')
1542: fatal("%.200s line %d: Missing ControlPersist"
1543: " argument.", filename, linenum);
1544: value = 0;
1545: value2 = 0; /* timeout */
1546: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1547: value = 0;
1548: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1549: value = 1;
1550: else if ((value2 = convtime(arg)) >= 0)
1551: value = 1;
1552: else
1553: fatal("%.200s line %d: Bad ControlPersist argument.",
1554: filename, linenum);
1555: if (*activep && *intptr == -1) {
1556: *intptr = value;
1557: options->control_persist_timeout = value2;
1558: }
1559: break;
1560:
1.136 djm 1561: case oHashKnownHosts:
1562: intptr = &options->hash_known_hosts;
1563: goto parse_flag;
1564:
1.144 reyk 1565: case oTunnel:
1566: intptr = &options->tun_open;
1.207 djm 1567: multistate_ptr = multistate_tunnel;
1568: goto parse_multistate;
1.144 reyk 1569:
1570: case oTunnelDevice:
1571: arg = strdelim(&s);
1572: if (!arg || *arg == '\0')
1573: fatal("%.200s line %d: Missing argument.", filename, linenum);
1574: value = a2tun(arg, &value2);
1.145 reyk 1575: if (value == SSH_TUNID_ERR)
1.144 reyk 1576: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1577: if (*activep) {
1578: options->tun_local = value;
1579: options->tun_remote = value2;
1580: }
1581: break;
1582:
1583: case oLocalCommand:
1584: charptr = &options->local_command;
1585: goto parse_command;
1586:
1587: case oPermitLocalCommand:
1588: intptr = &options->permit_local_command;
1589: goto parse_flag;
1590:
1.277 bluhm 1591: case oRemoteCommand:
1592: charptr = &options->remote_command;
1593: goto parse_command;
1594:
1.167 grunk 1595: case oVisualHostKey:
1596: intptr = &options->visual_host_key;
1597: goto parse_flag;
1598:
1.252 djm 1599: case oInclude:
1600: if (cmdline)
1601: fatal("Include directive not supported as a "
1602: "command-line option");
1603: value = 0;
1604: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1605: /*
1606: * Ensure all paths are anchored. User configuration
1607: * files may begin with '~/' but system configurations
1608: * must not. If the path is relative, then treat it
1609: * as living in ~/.ssh for user configurations or
1610: * /etc/ssh for system ones.
1611: */
1612: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0)
1613: fatal("%.200s line %d: bad include path %s.",
1614: filename, linenum, arg);
1.301 djm 1615: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1616: xasprintf(&arg2, "%s/%s",
1617: (flags & SSHCONF_USERCONF) ?
1618: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1619: } else
1620: arg2 = xstrdup(arg);
1621: memset(&gl, 0, sizeof(gl));
1622: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1623: if (r == GLOB_NOMATCH) {
1624: debug("%.200s line %d: include %s matched no "
1625: "files",filename, linenum, arg2);
1.269 dtucker 1626: free(arg2);
1.252 djm 1627: continue;
1.313 deraadt 1628: } else if (r != 0)
1.252 djm 1629: fatal("%.200s line %d: glob failed for %s.",
1630: filename, linenum, arg2);
1631: free(arg2);
1632: oactive = *activep;
1.313 deraadt 1633: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1634: debug3("%.200s line %d: Including file %s "
1635: "depth %d%s", filename, linenum,
1636: gl.gl_pathv[i], depth,
1637: oactive ? "" : " (parse only)");
1638: r = read_config_file_depth(gl.gl_pathv[i],
1639: pw, host, original_host, options,
1640: flags | SSHCONF_CHECKPERM |
1641: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1642: activep, want_final_pass, depth + 1);
1.264 djm 1643: if (r != 1 && errno != ENOENT) {
1.263 djm 1644: fatal("Can't open user config file "
1645: "%.100s: %.100s", gl.gl_pathv[i],
1646: strerror(errno));
1647: }
1.252 djm 1648: /*
1649: * don't let Match in includes clobber the
1650: * containing file's Match state.
1651: */
1652: *activep = oactive;
1653: if (r != 1)
1654: value = -1;
1655: }
1656: globfree(&gl);
1657: }
1658: if (value != 0)
1659: return value;
1660: break;
1661:
1.190 djm 1662: case oIPQoS:
1663: arg = strdelim(&s);
1664: if ((value = parse_ipqos(arg)) == -1)
1665: fatal("%s line %d: Bad IPQoS value: %s",
1666: filename, linenum, arg);
1667: arg = strdelim(&s);
1668: if (arg == NULL)
1669: value2 = value;
1670: else if ((value2 = parse_ipqos(arg)) == -1)
1671: fatal("%s line %d: Bad IPQoS value: %s",
1672: filename, linenum, arg);
1673: if (*activep) {
1674: options->ip_qos_interactive = value;
1675: options->ip_qos_bulk = value2;
1676: }
1677: break;
1678:
1.192 djm 1679: case oRequestTTY:
1680: intptr = &options->request_tty;
1.207 djm 1681: multistate_ptr = multistate_requesttty;
1682: goto parse_multistate;
1.192 djm 1683:
1.199 djm 1684: case oIgnoreUnknown:
1685: charptr = &options->ignored_unknown;
1686: goto parse_string;
1687:
1.205 djm 1688: case oProxyUseFdpass:
1689: intptr = &options->proxy_use_fdpass;
1690: goto parse_flag;
1691:
1.208 djm 1692: case oCanonicalDomains:
1693: value = options->num_canonical_domains != 0;
1694: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.280 millert 1695: if (!valid_domain(arg, 1, &errstr)) {
1696: fatal("%s line %d: %s", filename, linenum,
1697: errstr);
1698: }
1.208 djm 1699: if (!*activep || value)
1700: continue;
1701: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1702: fatal("%s line %d: too many hostname suffixes.",
1703: filename, linenum);
1704: options->canonical_domains[
1705: options->num_canonical_domains++] = xstrdup(arg);
1706: }
1707: break;
1708:
1.209 djm 1709: case oCanonicalizePermittedCNAMEs:
1.208 djm 1710: value = options->num_permitted_cnames != 0;
1711: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1712: /* Either '*' for everything or 'list:list' */
1713: if (strcmp(arg, "*") == 0)
1714: arg2 = arg;
1715: else {
1716: lowercase(arg);
1717: if ((arg2 = strchr(arg, ':')) == NULL ||
1718: arg2[1] == '\0') {
1719: fatal("%s line %d: "
1720: "Invalid permitted CNAME \"%s\"",
1721: filename, linenum, arg);
1722: }
1723: *arg2 = '\0';
1724: arg2++;
1725: }
1726: if (!*activep || value)
1727: continue;
1728: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1729: fatal("%s line %d: too many permitted CNAMEs.",
1730: filename, linenum);
1731: cname = options->permitted_cnames +
1732: options->num_permitted_cnames++;
1733: cname->source_list = xstrdup(arg);
1734: cname->target_list = xstrdup(arg2);
1735: }
1736: break;
1737:
1.209 djm 1738: case oCanonicalizeHostname:
1739: intptr = &options->canonicalize_hostname;
1740: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1741: goto parse_multistate;
1742:
1.209 djm 1743: case oCanonicalizeMaxDots:
1744: intptr = &options->canonicalize_max_dots;
1.208 djm 1745: goto parse_int;
1746:
1.209 djm 1747: case oCanonicalizeFallbackLocal:
1748: intptr = &options->canonicalize_fallback_local;
1.208 djm 1749: goto parse_flag;
1750:
1.220 millert 1751: case oStreamLocalBindMask:
1752: arg = strdelim(&s);
1753: if (!arg || *arg == '\0')
1754: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1755: /* Parse mode in octal format */
1756: value = strtol(arg, &endofnumber, 8);
1757: if (arg == endofnumber || value < 0 || value > 0777)
1758: fatal("%.200s line %d: Bad mask.", filename, linenum);
1759: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1760: break;
1761:
1762: case oStreamLocalBindUnlink:
1763: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1764: goto parse_flag;
1765:
1.223 djm 1766: case oRevokedHostKeys:
1767: charptr = &options->revoked_host_keys;
1768: goto parse_string;
1769:
1.224 djm 1770: case oFingerprintHash:
1.225 djm 1771: intptr = &options->fingerprint_hash;
1.224 djm 1772: arg = strdelim(&s);
1773: if (!arg || *arg == '\0')
1774: fatal("%.200s line %d: Missing argument.",
1775: filename, linenum);
1776: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1777: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1778: filename, linenum, arg);
1.225 djm 1779: if (*activep && *intptr == -1)
1780: *intptr = value;
1.224 djm 1781: break;
1782:
1.229 djm 1783: case oUpdateHostkeys:
1784: intptr = &options->update_hostkeys;
1.232 djm 1785: multistate_ptr = multistate_yesnoask;
1786: goto parse_multistate;
1.229 djm 1787:
1.230 djm 1788: case oHostbasedKeyTypes:
1789: charptr = &options->hostbased_key_types;
1.238 markus 1790: goto parse_keytypes;
1791:
1792: case oPubkeyAcceptedKeyTypes:
1793: charptr = &options->pubkey_key_types;
1794: goto parse_keytypes;
1.230 djm 1795:
1.246 jcs 1796: case oAddKeysToAgent:
1.334 djm 1797: arg = strdelim(&s);
1798: arg2 = strdelim(&s);
1799: value = parse_multistate_value(arg, filename, linenum,
1800: multistate_yesnoaskconfirm);
1801: value2 = 0; /* unlimited lifespan by default */
1802: if (value == 3 && arg2 != NULL) {
1803: /* allow "AddKeysToAgent confirm 5m" */
1804: if ((value2 = convtime(arg2)) == -1 || value2 > INT_MAX)
1805: fatal("%s line %d: invalid time value.",
1806: filename, linenum);
1807: } else if (value == -1 && arg2 == NULL) {
1808: if ((value2 = convtime(arg)) == -1 || value2 > INT_MAX)
1809: fatal("%s line %d: unsupported option",
1810: filename, linenum);
1811: value = 1; /* yes */
1812: } else if (value == -1 || arg2 != NULL) {
1813: fatal("%s line %d: unsupported option",
1814: filename, linenum);
1815: }
1816: if (*activep && options->add_keys_to_agent == -1) {
1817: options->add_keys_to_agent = value;
1818: options->add_keys_to_agent_lifespan = value2;
1819: }
1820: break;
1.246 jcs 1821:
1.253 markus 1822: case oIdentityAgent:
1823: charptr = &options->identity_agent;
1.299 djm 1824: arg = strdelim(&s);
1825: if (!arg || *arg == '\0')
1826: fatal("%.200s line %d: Missing argument.",
1827: filename, linenum);
1.319 djm 1828: parse_agent_path:
1.299 djm 1829: /* Extra validation if the string represents an env var. */
1.331 dtucker 1830: if ((arg2 = dollar_expand(&r, arg)) == NULL || r)
1831: fatal("%.200s line %d: Invalid environment expansion "
1832: "%s.", filename, linenum, arg);
1833: free(arg2);
1834: /* check for legacy environment format */
1835: if (arg[0] == '$' && arg[1] != '{' && !valid_env_name(arg + 1)) {
1.299 djm 1836: fatal("%.200s line %d: Invalid environment name %s.",
1837: filename, linenum, arg);
1838: }
1839: if (*activep && *charptr == NULL)
1840: *charptr = xstrdup(arg);
1841: break;
1.253 markus 1842:
1.96 markus 1843: case oDeprecated:
1.98 markus 1844: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1845: filename, linenum, keyword);
1.98 markus 1846: return 0;
1.96 markus 1847:
1.110 jakob 1848: case oUnsupported:
1849: error("%s line %d: Unsupported option \"%s\"",
1850: filename, linenum, keyword);
1851: return 0;
1852:
1.17 markus 1853: default:
1.340 djm 1854: fatal_f("Unimplemented opcode %d", opcode);
1.17 markus 1855: }
1856:
1857: /* Check that there is no garbage at end of line. */
1.57 djm 1858: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1859: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1860: filename, linenum, arg);
1.39 ho 1861: }
1.17 markus 1862: return 0;
1.1 deraadt 1863: }
1864:
1.19 markus 1865: /*
1866: * Reads the config file and modifies the options accordingly. Options
1867: * should already be initialized before this call. This never returns if
1.89 stevesk 1868: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1869: */
1.89 stevesk 1870: int
1.206 djm 1871: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 1872: const char *original_host, Options *options, int flags,
1873: int *want_final_pass)
1.1 deraadt 1874: {
1.252 djm 1875: int active = 1;
1876:
1877: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 1878: options, flags, &active, want_final_pass, 0);
1.252 djm 1879: }
1880:
1881: #define READCONF_MAX_DEPTH 16
1882: static int
1883: read_config_file_depth(const char *filename, struct passwd *pw,
1884: const char *host, const char *original_host, Options *options,
1.302 djm 1885: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 1886: {
1.17 markus 1887: FILE *f;
1.289 markus 1888: char *line = NULL;
1889: size_t linesize = 0;
1.252 djm 1890: int linenum;
1.17 markus 1891: int bad_options = 0;
1892:
1.252 djm 1893: if (depth < 0 || depth > READCONF_MAX_DEPTH)
1894: fatal("Too many recursive configuration includes");
1895:
1.129 djm 1896: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1897: return 0;
1.129 djm 1898:
1.196 dtucker 1899: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1900: struct stat sb;
1.134 deraadt 1901:
1.131 dtucker 1902: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1903: fatal("fstat %s: %s", filename, strerror(errno));
1904: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1905: (sb.st_mode & 022) != 0))
1.129 djm 1906: fatal("Bad owner or permissions on %s", filename);
1907: }
1.17 markus 1908:
1909: debug("Reading configuration data %.200s", filename);
1910:
1.19 markus 1911: /*
1912: * Mark that we are now processing the options. This flag is turned
1913: * on/off by Host specifications.
1914: */
1.17 markus 1915: linenum = 0;
1.289 markus 1916: while (getline(&line, &linesize, f) != -1) {
1.17 markus 1917: /* Update line number counter. */
1918: linenum++;
1.252 djm 1919: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 1920: line, filename, linenum, activep, flags, want_final_pass,
1921: depth) != 0)
1.17 markus 1922: bad_options++;
1923: }
1.289 markus 1924: free(line);
1.17 markus 1925: fclose(f);
1926: if (bad_options > 0)
1.64 millert 1927: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1928: filename, bad_options);
1.89 stevesk 1929: return 1;
1.1 deraadt 1930: }
1931:
1.218 djm 1932: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1933: int
1934: option_clear_or_none(const char *o)
1935: {
1936: return o == NULL || strcasecmp(o, "none") == 0;
1937: }
1938:
1.19 markus 1939: /*
1940: * Initializes options to special values that indicate that they have not yet
1941: * been set. Read_config_file will only set options with this value. Options
1942: * are processed in the following order: command line, user config file,
1943: * system config file. Last, fill_default_options is called.
1944: */
1.1 deraadt 1945:
1.26 markus 1946: void
1.17 markus 1947: initialize_options(Options * options)
1.1 deraadt 1948: {
1.17 markus 1949: memset(options, 'X', sizeof(*options));
1950: options->forward_agent = -1;
1.319 djm 1951: options->forward_agent_sock_path = NULL;
1.17 markus 1952: options->forward_x11 = -1;
1.123 markus 1953: options->forward_x11_trusted = -1;
1.186 djm 1954: options->forward_x11_timeout = -1;
1.255 dtucker 1955: options->stdio_forward_host = NULL;
1956: options->stdio_forward_port = 0;
1.256 dtucker 1957: options->clear_forwardings = -1;
1.153 markus 1958: options->exit_on_forward_failure = -1;
1.34 markus 1959: options->xauth_location = NULL;
1.220 millert 1960: options->fwd_opts.gateway_ports = -1;
1961: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1962: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 1963: options->pubkey_authentication = -1;
1.78 markus 1964: options->challenge_response_authentication = -1;
1.118 markus 1965: options->gss_authentication = -1;
1966: options->gss_deleg_creds = -1;
1.17 markus 1967: options->password_authentication = -1;
1.48 markus 1968: options->kbd_interactive_authentication = -1;
1969: options->kbd_interactive_devices = NULL;
1.72 markus 1970: options->hostbased_authentication = -1;
1.17 markus 1971: options->batch_mode = -1;
1972: options->check_host_ip = -1;
1973: options->strict_host_key_checking = -1;
1974: options->compression = -1;
1.126 markus 1975: options->tcp_keep_alive = -1;
1.17 markus 1976: options->port = -1;
1.114 djm 1977: options->address_family = -1;
1.17 markus 1978: options->connection_attempts = -1;
1.111 djm 1979: options->connection_timeout = -1;
1.17 markus 1980: options->number_of_password_prompts = -1;
1.25 markus 1981: options->ciphers = NULL;
1.62 markus 1982: options->macs = NULL;
1.189 djm 1983: options->kex_algorithms = NULL;
1.76 markus 1984: options->hostkeyalgorithms = NULL;
1.298 djm 1985: options->ca_sign_algorithms = NULL;
1.17 markus 1986: options->num_identity_files = 0;
1.241 djm 1987: options->num_certificate_files = 0;
1.17 markus 1988: options->hostname = NULL;
1.52 markus 1989: options->host_key_alias = NULL;
1.17 markus 1990: options->proxy_command = NULL;
1.257 djm 1991: options->jump_user = NULL;
1992: options->jump_host = NULL;
1993: options->jump_port = -1;
1994: options->jump_extra = NULL;
1.17 markus 1995: options->user = NULL;
1996: options->escape_char = -1;
1.193 djm 1997: options->num_system_hostfiles = 0;
1998: options->num_user_hostfiles = 0;
1.185 djm 1999: options->local_forwards = NULL;
1.17 markus 2000: options->num_local_forwards = 0;
1.185 djm 2001: options->remote_forwards = NULL;
1.17 markus 2002: options->num_remote_forwards = 0;
1.271 dtucker 2003: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2004: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2005: options->num_log_verbose = 0;
2006: options->log_verbose = NULL;
1.67 markus 2007: options->preferred_authentications = NULL;
1.77 markus 2008: options->bind_address = NULL;
1.282 djm 2009: options->bind_interface = NULL;
1.183 markus 2010: options->pkcs11_provider = NULL;
1.310 djm 2011: options->sk_provider = NULL;
1.101 markus 2012: options->enable_ssh_keysign = - 1;
1.91 markus 2013: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2014: options->identities_only = - 1;
1.105 markus 2015: options->rekey_limit = - 1;
1.198 dtucker 2016: options->rekey_interval = -1;
1.107 jakob 2017: options->verify_host_key_dns = -1;
1.127 markus 2018: options->server_alive_interval = -1;
2019: options->server_alive_count_max = -1;
1.290 djm 2020: options->send_env = NULL;
1.130 djm 2021: options->num_send_env = 0;
1.290 djm 2022: options->setenv = NULL;
2023: options->num_setenv = 0;
1.132 djm 2024: options->control_path = NULL;
2025: options->control_master = -1;
1.187 djm 2026: options->control_persist = -1;
2027: options->control_persist_timeout = 0;
1.136 djm 2028: options->hash_known_hosts = -1;
1.144 reyk 2029: options->tun_open = -1;
2030: options->tun_local = -1;
2031: options->tun_remote = -1;
2032: options->local_command = NULL;
2033: options->permit_local_command = -1;
1.277 bluhm 2034: options->remote_command = NULL;
1.246 jcs 2035: options->add_keys_to_agent = -1;
1.334 djm 2036: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2037: options->identity_agent = NULL;
1.167 grunk 2038: options->visual_host_key = -1;
1.190 djm 2039: options->ip_qos_interactive = -1;
2040: options->ip_qos_bulk = -1;
1.192 djm 2041: options->request_tty = -1;
1.205 djm 2042: options->proxy_use_fdpass = -1;
1.199 djm 2043: options->ignored_unknown = NULL;
1.208 djm 2044: options->num_canonical_domains = 0;
2045: options->num_permitted_cnames = 0;
1.209 djm 2046: options->canonicalize_max_dots = -1;
2047: options->canonicalize_fallback_local = -1;
2048: options->canonicalize_hostname = -1;
1.223 djm 2049: options->revoked_host_keys = NULL;
1.224 djm 2050: options->fingerprint_hash = -1;
1.229 djm 2051: options->update_hostkeys = -1;
1.230 djm 2052: options->hostbased_key_types = NULL;
1.238 markus 2053: options->pubkey_key_types = NULL;
1.1 deraadt 2054: }
2055:
1.19 markus 2056: /*
1.218 djm 2057: * A petite version of fill_default_options() that just fills the options
2058: * needed for hostname canonicalization to proceed.
2059: */
2060: void
2061: fill_default_options_for_canonicalization(Options *options)
2062: {
2063: if (options->canonicalize_max_dots == -1)
2064: options->canonicalize_max_dots = 1;
2065: if (options->canonicalize_fallback_local == -1)
2066: options->canonicalize_fallback_local = 1;
2067: if (options->canonicalize_hostname == -1)
2068: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2069: }
2070:
2071: /*
1.19 markus 2072: * Called after processing other sources of option data, this fills those
2073: * options for which no value has been specified with their default values.
2074: */
1.26 markus 2075: void
1.17 markus 2076: fill_default_options(Options * options)
1.1 deraadt 2077: {
1.298 djm 2078: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2079: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.297 djm 2080: int r;
1.292 djm 2081:
1.17 markus 2082: if (options->forward_agent == -1)
1.33 markus 2083: options->forward_agent = 0;
1.17 markus 2084: if (options->forward_x11 == -1)
1.23 markus 2085: options->forward_x11 = 0;
1.123 markus 2086: if (options->forward_x11_trusted == -1)
2087: options->forward_x11_trusted = 0;
1.186 djm 2088: if (options->forward_x11_timeout == -1)
2089: options->forward_x11_timeout = 1200;
1.256 dtucker 2090: /*
2091: * stdio forwarding (-W) changes the default for these but we defer
2092: * setting the values so they can be overridden.
2093: */
1.153 markus 2094: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2095: options->exit_on_forward_failure =
2096: options->stdio_forward_host != NULL ? 1 : 0;
2097: if (options->clear_forwardings == -1)
2098: options->clear_forwardings =
2099: options->stdio_forward_host != NULL ? 1 : 0;
2100: if (options->clear_forwardings == 1)
2101: clear_forwardings(options);
2102:
1.34 markus 2103: if (options->xauth_location == NULL)
1.80 markus 2104: options->xauth_location = _PATH_XAUTH;
1.220 millert 2105: if (options->fwd_opts.gateway_ports == -1)
2106: options->fwd_opts.gateway_ports = 0;
2107: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2108: options->fwd_opts.streamlocal_bind_mask = 0177;
2109: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2110: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2111: if (options->pubkey_authentication == -1)
2112: options->pubkey_authentication = 1;
1.78 markus 2113: if (options->challenge_response_authentication == -1)
1.83 markus 2114: options->challenge_response_authentication = 1;
1.118 markus 2115: if (options->gss_authentication == -1)
1.122 markus 2116: options->gss_authentication = 0;
1.118 markus 2117: if (options->gss_deleg_creds == -1)
2118: options->gss_deleg_creds = 0;
1.17 markus 2119: if (options->password_authentication == -1)
2120: options->password_authentication = 1;
1.48 markus 2121: if (options->kbd_interactive_authentication == -1)
1.59 markus 2122: options->kbd_interactive_authentication = 1;
1.72 markus 2123: if (options->hostbased_authentication == -1)
2124: options->hostbased_authentication = 0;
1.17 markus 2125: if (options->batch_mode == -1)
2126: options->batch_mode = 0;
2127: if (options->check_host_ip == -1)
2128: options->check_host_ip = 1;
2129: if (options->strict_host_key_checking == -1)
1.278 djm 2130: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2131: if (options->compression == -1)
2132: options->compression = 0;
1.126 markus 2133: if (options->tcp_keep_alive == -1)
2134: options->tcp_keep_alive = 1;
1.17 markus 2135: if (options->port == -1)
2136: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2137: if (options->address_family == -1)
2138: options->address_family = AF_UNSPEC;
1.17 markus 2139: if (options->connection_attempts == -1)
1.84 markus 2140: options->connection_attempts = 1;
1.17 markus 2141: if (options->number_of_password_prompts == -1)
2142: options->number_of_password_prompts = 3;
1.76 markus 2143: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2144: if (options->add_keys_to_agent == -1) {
1.246 jcs 2145: options->add_keys_to_agent = 0;
1.334 djm 2146: options->add_keys_to_agent_lifespan = 0;
2147: }
1.17 markus 2148: if (options->num_identity_files == 0) {
1.273 djm 2149: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2150: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2151: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2152: add_identity_file(options, "~/",
1.310 djm 2153: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2154: add_identity_file(options, "~/",
1.273 djm 2155: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2156: add_identity_file(options, "~/",
2157: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2158: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2159: }
1.17 markus 2160: if (options->escape_char == -1)
2161: options->escape_char = '~';
1.193 djm 2162: if (options->num_system_hostfiles == 0) {
2163: options->system_hostfiles[options->num_system_hostfiles++] =
2164: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2165: options->system_hostfiles[options->num_system_hostfiles++] =
2166: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2167: }
1.336 djm 2168: if (options->update_hostkeys == -1) {
1.338 djm 2169: if (options->verify_host_key_dns <= 0 &&
2170: (options->num_user_hostfiles == 0 ||
1.336 djm 2171: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2172: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2173: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2174: else
1.325 djm 2175: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2176: }
1.193 djm 2177: if (options->num_user_hostfiles == 0) {
2178: options->user_hostfiles[options->num_user_hostfiles++] =
2179: xstrdup(_PATH_SSH_USER_HOSTFILE);
2180: options->user_hostfiles[options->num_user_hostfiles++] =
2181: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2182: }
1.95 markus 2183: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2184: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2185: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2186: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2187: if (options->no_host_authentication_for_localhost == - 1)
2188: options->no_host_authentication_for_localhost = 0;
1.128 markus 2189: if (options->identities_only == -1)
2190: options->identities_only = 0;
1.101 markus 2191: if (options->enable_ssh_keysign == -1)
2192: options->enable_ssh_keysign = 0;
1.105 markus 2193: if (options->rekey_limit == -1)
2194: options->rekey_limit = 0;
1.198 dtucker 2195: if (options->rekey_interval == -1)
2196: options->rekey_interval = 0;
1.107 jakob 2197: if (options->verify_host_key_dns == -1)
2198: options->verify_host_key_dns = 0;
1.127 markus 2199: if (options->server_alive_interval == -1)
2200: options->server_alive_interval = 0;
2201: if (options->server_alive_count_max == -1)
2202: options->server_alive_count_max = 3;
1.132 djm 2203: if (options->control_master == -1)
2204: options->control_master = 0;
1.187 djm 2205: if (options->control_persist == -1) {
2206: options->control_persist = 0;
2207: options->control_persist_timeout = 0;
2208: }
1.136 djm 2209: if (options->hash_known_hosts == -1)
2210: options->hash_known_hosts = 0;
1.144 reyk 2211: if (options->tun_open == -1)
1.145 reyk 2212: options->tun_open = SSH_TUNMODE_NO;
2213: if (options->tun_local == -1)
2214: options->tun_local = SSH_TUNID_ANY;
2215: if (options->tun_remote == -1)
2216: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2217: if (options->permit_local_command == -1)
2218: options->permit_local_command = 0;
1.167 grunk 2219: if (options->visual_host_key == -1)
2220: options->visual_host_key = 0;
1.190 djm 2221: if (options->ip_qos_interactive == -1)
1.284 job 2222: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2223: if (options->ip_qos_bulk == -1)
1.284 job 2224: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2225: if (options->request_tty == -1)
2226: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2227: if (options->proxy_use_fdpass == -1)
2228: options->proxy_use_fdpass = 0;
1.209 djm 2229: if (options->canonicalize_max_dots == -1)
2230: options->canonicalize_max_dots = 1;
2231: if (options->canonicalize_fallback_local == -1)
2232: options->canonicalize_fallback_local = 1;
2233: if (options->canonicalize_hostname == -1)
2234: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2235: if (options->fingerprint_hash == -1)
2236: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2237: if (options->sk_provider == NULL)
1.314 djm 2238: options->sk_provider = xstrdup("internal");
1.292 djm 2239:
2240: /* Expand KEX name lists */
2241: all_cipher = cipher_alg_list(',', 0);
2242: all_mac = mac_alg_list(',');
2243: all_kex = kex_alg_list(',');
2244: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2245: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2246: /* remove unsupported algos from default lists */
1.332 djm 2247: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2248: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2249: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2250: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2251: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2252: #define ASSEMBLE(what, defaults, all) \
2253: do { \
2254: if ((r = kex_assemble_names(&options->what, \
2255: defaults, all)) != 0) \
1.340 djm 2256: fatal_fr(r, "%s", #what); \
1.297 djm 2257: } while (0)
1.320 dtucker 2258: ASSEMBLE(ciphers, def_cipher, all_cipher);
2259: ASSEMBLE(macs, def_mac, all_mac);
2260: ASSEMBLE(kex_algorithms, def_kex, all_kex);
2261: ASSEMBLE(hostbased_key_types, def_key, all_key);
2262: ASSEMBLE(pubkey_key_types, def_key, all_key);
2263: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2264: #undef ASSEMBLE
1.292 djm 2265: free(all_cipher);
2266: free(all_mac);
2267: free(all_kex);
2268: free(all_key);
1.298 djm 2269: free(all_sig);
1.320 dtucker 2270: free(def_cipher);
2271: free(def_mac);
2272: free(def_kex);
2273: kex_default_pk_alg_filtered = def_key; /* save for later use */
2274: free(def_sig);
1.224 djm 2275:
1.207 djm 2276: #define CLEAR_ON_NONE(v) \
2277: do { \
1.218 djm 2278: if (option_clear_or_none(v)) { \
1.207 djm 2279: free(v); \
2280: v = NULL; \
2281: } \
2282: } while(0)
2283: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2284: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2285: CLEAR_ON_NONE(options->proxy_command);
2286: CLEAR_ON_NONE(options->control_path);
1.223 djm 2287: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2288: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2289: CLEAR_ON_NONE(options->sk_provider);
1.287 djm 2290: if (options->jump_host != NULL &&
2291: strcmp(options->jump_host, "none") == 0 &&
2292: options->jump_port == 0 && options->jump_user == NULL) {
2293: free(options->jump_host);
2294: options->jump_host = NULL;
2295: }
1.254 markus 2296: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2297: /* options->user will be set in the main program if appropriate */
2298: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2299: /* options->host_key_alias should not be set by default */
1.67 markus 2300: /* options->preferred_authentications will be set in ssh */
1.135 djm 2301: }
2302:
1.220 millert 2303: struct fwdarg {
2304: char *arg;
2305: int ispath;
2306: };
2307:
2308: /*
2309: * parse_fwd_field
2310: * parses the next field in a port forwarding specification.
2311: * sets fwd to the parsed field and advances p past the colon
2312: * or sets it to NULL at end of string.
2313: * returns 0 on success, else non-zero.
2314: */
2315: static int
2316: parse_fwd_field(char **p, struct fwdarg *fwd)
2317: {
2318: char *ep, *cp = *p;
2319: int ispath = 0;
2320:
2321: if (*cp == '\0') {
2322: *p = NULL;
2323: return -1; /* end of string */
2324: }
2325:
2326: /*
2327: * A field escaped with square brackets is used literally.
2328: * XXX - allow ']' to be escaped via backslash?
2329: */
2330: if (*cp == '[') {
2331: /* find matching ']' */
2332: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2333: if (*ep == '/')
2334: ispath = 1;
2335: }
2336: /* no matching ']' or not at end of field. */
2337: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2338: return -1;
2339: /* NUL terminate the field and advance p past the colon */
2340: *ep++ = '\0';
2341: if (*ep != '\0')
2342: *ep++ = '\0';
2343: fwd->arg = cp + 1;
2344: fwd->ispath = ispath;
2345: *p = ep;
2346: return 0;
2347: }
2348:
2349: for (cp = *p; *cp != '\0'; cp++) {
2350: switch (*cp) {
2351: case '\\':
2352: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2353: if (*cp == '\0')
2354: return -1;
1.220 millert 2355: break;
2356: case '/':
2357: ispath = 1;
2358: break;
2359: case ':':
2360: *cp++ = '\0';
2361: goto done;
2362: }
2363: }
2364: done:
2365: fwd->arg = *p;
2366: fwd->ispath = ispath;
2367: *p = cp;
2368: return 0;
2369: }
2370:
1.135 djm 2371: /*
2372: * parse_forward
2373: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2374: * dynamicfwd == 0
1.220 millert 2375: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2376: * listenpath:connectpath
1.168 stevesk 2377: * dynamicfwd == 1
2378: * [listenhost:]listenport
1.135 djm 2379: * returns number of arguments parsed or zero on error
2380: */
2381: int
1.220 millert 2382: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2383: {
1.220 millert 2384: struct fwdarg fwdargs[4];
2385: char *p, *cp;
1.331 dtucker 2386: int i, err;
1.135 djm 2387:
1.220 millert 2388: memset(fwd, 0, sizeof(*fwd));
2389: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2390:
1.331 dtucker 2391: /*
2392: * We expand environment variables before checking if we think they're
2393: * paths so that if ${VAR} expands to a fully qualified path it is
2394: * treated as a path.
2395: */
2396: cp = p = dollar_expand(&err, fwdspec);
2397: if (p == NULL || err)
2398: return 0;
1.135 djm 2399:
2400: /* skip leading spaces */
1.214 deraadt 2401: while (isspace((u_char)*cp))
1.135 djm 2402: cp++;
2403:
1.220 millert 2404: for (i = 0; i < 4; ++i) {
2405: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2406: break;
1.220 millert 2407: }
1.135 djm 2408:
1.170 stevesk 2409: /* Check for trailing garbage */
1.220 millert 2410: if (cp != NULL && *cp != '\0') {
1.135 djm 2411: i = 0; /* failure */
1.220 millert 2412: }
1.135 djm 2413:
2414: switch (i) {
1.168 stevesk 2415: case 1:
1.220 millert 2416: if (fwdargs[0].ispath) {
2417: fwd->listen_path = xstrdup(fwdargs[0].arg);
2418: fwd->listen_port = PORT_STREAMLOCAL;
2419: } else {
2420: fwd->listen_host = NULL;
2421: fwd->listen_port = a2port(fwdargs[0].arg);
2422: }
1.168 stevesk 2423: fwd->connect_host = xstrdup("socks");
2424: break;
2425:
2426: case 2:
1.220 millert 2427: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2428: fwd->listen_path = xstrdup(fwdargs[0].arg);
2429: fwd->listen_port = PORT_STREAMLOCAL;
2430: fwd->connect_path = xstrdup(fwdargs[1].arg);
2431: fwd->connect_port = PORT_STREAMLOCAL;
2432: } else if (fwdargs[1].ispath) {
2433: fwd->listen_host = NULL;
2434: fwd->listen_port = a2port(fwdargs[0].arg);
2435: fwd->connect_path = xstrdup(fwdargs[1].arg);
2436: fwd->connect_port = PORT_STREAMLOCAL;
2437: } else {
2438: fwd->listen_host = xstrdup(fwdargs[0].arg);
2439: fwd->listen_port = a2port(fwdargs[1].arg);
2440: fwd->connect_host = xstrdup("socks");
2441: }
1.168 stevesk 2442: break;
2443:
1.135 djm 2444: case 3:
1.220 millert 2445: if (fwdargs[0].ispath) {
2446: fwd->listen_path = xstrdup(fwdargs[0].arg);
2447: fwd->listen_port = PORT_STREAMLOCAL;
2448: fwd->connect_host = xstrdup(fwdargs[1].arg);
2449: fwd->connect_port = a2port(fwdargs[2].arg);
2450: } else if (fwdargs[2].ispath) {
2451: fwd->listen_host = xstrdup(fwdargs[0].arg);
2452: fwd->listen_port = a2port(fwdargs[1].arg);
2453: fwd->connect_path = xstrdup(fwdargs[2].arg);
2454: fwd->connect_port = PORT_STREAMLOCAL;
2455: } else {
2456: fwd->listen_host = NULL;
2457: fwd->listen_port = a2port(fwdargs[0].arg);
2458: fwd->connect_host = xstrdup(fwdargs[1].arg);
2459: fwd->connect_port = a2port(fwdargs[2].arg);
2460: }
1.135 djm 2461: break;
2462:
2463: case 4:
1.220 millert 2464: fwd->listen_host = xstrdup(fwdargs[0].arg);
2465: fwd->listen_port = a2port(fwdargs[1].arg);
2466: fwd->connect_host = xstrdup(fwdargs[2].arg);
2467: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2468: break;
2469: default:
2470: i = 0; /* failure */
2471: }
2472:
1.202 djm 2473: free(p);
1.135 djm 2474:
1.168 stevesk 2475: if (dynamicfwd) {
2476: if (!(i == 1 || i == 2))
2477: goto fail_free;
2478: } else {
1.220 millert 2479: if (!(i == 3 || i == 4)) {
2480: if (fwd->connect_path == NULL &&
2481: fwd->listen_path == NULL)
2482: goto fail_free;
2483: }
2484: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2485: goto fail_free;
2486: }
2487:
1.220 millert 2488: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2489: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2490: goto fail_free;
2491: if (fwd->connect_host != NULL &&
2492: strlen(fwd->connect_host) >= NI_MAXHOST)
2493: goto fail_free;
1.220 millert 2494: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2495: if (fwd->connect_path != NULL &&
2496: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2497: goto fail_free;
1.176 djm 2498: if (fwd->listen_host != NULL &&
2499: strlen(fwd->listen_host) >= NI_MAXHOST)
2500: goto fail_free;
1.220 millert 2501: if (fwd->listen_path != NULL &&
2502: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2503: goto fail_free;
1.135 djm 2504:
2505: return (i);
2506:
2507: fail_free:
1.202 djm 2508: free(fwd->connect_host);
2509: fwd->connect_host = NULL;
1.220 millert 2510: free(fwd->connect_path);
2511: fwd->connect_path = NULL;
1.202 djm 2512: free(fwd->listen_host);
2513: fwd->listen_host = NULL;
1.220 millert 2514: free(fwd->listen_path);
2515: fwd->listen_path = NULL;
1.135 djm 2516: return (0);
1.221 djm 2517: }
2518:
1.257 djm 2519: int
2520: parse_jump(const char *s, Options *o, int active)
2521: {
2522: char *orig, *sdup, *cp;
2523: char *host = NULL, *user = NULL;
1.258 naddy 2524: int ret = -1, port = -1, first;
1.257 djm 2525:
2526: active &= o->proxy_command == NULL && o->jump_host == NULL;
2527:
2528: orig = sdup = xstrdup(s);
1.258 naddy 2529: first = active;
1.259 djm 2530: do {
1.287 djm 2531: if (strcasecmp(s, "none") == 0)
2532: break;
1.259 djm 2533: if ((cp = strrchr(sdup, ',')) == NULL)
2534: cp = sdup; /* last */
2535: else
2536: *cp++ = '\0';
2537:
1.258 naddy 2538: if (first) {
1.257 djm 2539: /* First argument and configuration is active */
1.341 ! djm 2540: if (parse_ssh_uri(cp, &user, &host, &port) == -1 &&
1.280 millert 2541: parse_user_host_port(cp, &user, &host, &port) != 0)
1.257 djm 2542: goto out;
2543: } else {
2544: /* Subsequent argument or inactive configuration */
1.341 ! djm 2545: if (parse_ssh_uri(cp, NULL, NULL, NULL) == -1 &&
1.280 millert 2546: parse_user_host_port(cp, NULL, NULL, NULL) != 0)
1.257 djm 2547: goto out;
2548: }
1.258 naddy 2549: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2550: } while (cp != sdup);
1.257 djm 2551: /* success */
1.258 naddy 2552: if (active) {
1.287 djm 2553: if (strcasecmp(s, "none") == 0) {
2554: o->jump_host = xstrdup("none");
2555: o->jump_port = 0;
2556: } else {
2557: o->jump_user = user;
2558: o->jump_host = host;
2559: o->jump_port = port;
2560: o->proxy_command = xstrdup("none");
2561: user = host = NULL;
2562: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2563: o->jump_extra = xstrdup(s);
2564: o->jump_extra[cp - s] = '\0';
2565: }
1.259 djm 2566: }
1.258 naddy 2567: }
1.257 djm 2568: ret = 0;
2569: out:
1.258 naddy 2570: free(orig);
1.257 djm 2571: free(user);
2572: free(host);
2573: return ret;
1.280 millert 2574: }
2575:
2576: int
2577: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2578: {
2579: char *path;
2580: int r;
2581:
2582: r = parse_uri("ssh", uri, userp, hostp, portp, &path);
2583: if (r == 0 && path != NULL)
2584: r = -1; /* path not allowed */
2585: return r;
1.257 djm 2586: }
2587:
1.221 djm 2588: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2589: static const char *
2590: fmt_multistate_int(int val, const struct multistate *m)
2591: {
2592: u_int i;
2593:
2594: for (i = 0; m[i].key != NULL; i++) {
2595: if (m[i].value == val)
2596: return m[i].key;
2597: }
2598: return "UNKNOWN";
2599: }
2600:
2601: static const char *
2602: fmt_intarg(OpCodes code, int val)
2603: {
2604: if (val == -1)
2605: return "unset";
2606: switch (code) {
2607: case oAddressFamily:
2608: return fmt_multistate_int(val, multistate_addressfamily);
2609: case oVerifyHostKeyDNS:
1.232 djm 2610: case oUpdateHostkeys:
1.221 djm 2611: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 2612: case oStrictHostKeyChecking:
2613: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 2614: case oControlMaster:
2615: return fmt_multistate_int(val, multistate_controlmaster);
2616: case oTunnel:
2617: return fmt_multistate_int(val, multistate_tunnel);
2618: case oRequestTTY:
2619: return fmt_multistate_int(val, multistate_requesttty);
2620: case oCanonicalizeHostname:
2621: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 2622: case oAddKeysToAgent:
2623: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 2624: case oFingerprintHash:
2625: return ssh_digest_alg_name(val);
1.221 djm 2626: default:
2627: switch (val) {
2628: case 0:
2629: return "no";
2630: case 1:
2631: return "yes";
2632: default:
2633: return "UNKNOWN";
2634: }
2635: }
2636: }
2637:
2638: static const char *
2639: lookup_opcode_name(OpCodes code)
2640: {
2641: u_int i;
2642:
2643: for (i = 0; keywords[i].name != NULL; i++)
2644: if (keywords[i].opcode == code)
2645: return(keywords[i].name);
2646: return "UNKNOWN";
2647: }
2648:
2649: static void
2650: dump_cfg_int(OpCodes code, int val)
2651: {
2652: printf("%s %d\n", lookup_opcode_name(code), val);
2653: }
2654:
2655: static void
2656: dump_cfg_fmtint(OpCodes code, int val)
2657: {
2658: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2659: }
2660:
2661: static void
2662: dump_cfg_string(OpCodes code, const char *val)
2663: {
2664: if (val == NULL)
2665: return;
2666: printf("%s %s\n", lookup_opcode_name(code), val);
2667: }
2668:
2669: static void
2670: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2671: {
2672: u_int i;
2673:
2674: for (i = 0; i < count; i++)
2675: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2676: }
2677:
2678: static void
2679: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2680: {
2681: u_int i;
2682:
2683: printf("%s", lookup_opcode_name(code));
2684: for (i = 0; i < count; i++)
2685: printf(" %s", vals[i]);
2686: printf("\n");
2687: }
2688:
2689: static void
2690: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2691: {
2692: const struct Forward *fwd;
2693: u_int i;
2694:
2695: /* oDynamicForward */
2696: for (i = 0; i < count; i++) {
2697: fwd = &fwds[i];
1.265 djm 2698: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 2699: strcmp(fwd->connect_host, "socks") != 0)
2700: continue;
1.265 djm 2701: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 2702: strcmp(fwd->connect_host, "socks") == 0)
2703: continue;
2704: printf("%s", lookup_opcode_name(code));
2705: if (fwd->listen_port == PORT_STREAMLOCAL)
2706: printf(" %s", fwd->listen_path);
2707: else if (fwd->listen_host == NULL)
2708: printf(" %d", fwd->listen_port);
2709: else {
2710: printf(" [%s]:%d",
2711: fwd->listen_host, fwd->listen_port);
2712: }
2713: if (code != oDynamicForward) {
2714: if (fwd->connect_port == PORT_STREAMLOCAL)
2715: printf(" %s", fwd->connect_path);
2716: else if (fwd->connect_host == NULL)
2717: printf(" %d", fwd->connect_port);
2718: else {
2719: printf(" [%s]:%d",
2720: fwd->connect_host, fwd->connect_port);
2721: }
2722: }
2723: printf("\n");
2724: }
2725: }
2726:
2727: void
2728: dump_client_config(Options *o, const char *host)
2729: {
1.326 djm 2730: int i, r;
2731: char buf[8], *all_key;
2732:
2733: /*
2734: * Expand HostKeyAlgorithms name lists. This isn't handled in
2735: * fill_default_options() like the other algorithm lists because
2736: * the host key algorithms are by default dynamically chosen based
2737: * on the host's keys found in known_hosts.
2738: */
2739: all_key = sshkey_alg_list(0, 0, 1, ',');
2740: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
2741: all_key)) != 0)
1.340 djm 2742: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 2743: free(all_key);
1.240 djm 2744:
1.221 djm 2745: /* Most interesting options first: user, host, port */
2746: dump_cfg_string(oUser, o->user);
1.306 jmc 2747: dump_cfg_string(oHostname, host);
1.221 djm 2748: dump_cfg_int(oPort, o->port);
2749:
2750: /* Flag options */
2751: dump_cfg_fmtint(oAddressFamily, o->address_family);
2752: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2753: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2754: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2755: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2756: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2757: dump_cfg_fmtint(oCompression, o->compression);
2758: dump_cfg_fmtint(oControlMaster, o->control_master);
2759: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 2760: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 2761: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2762: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2763: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2764: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2765: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2766: #ifdef GSSAPI
2767: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2768: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2769: #endif /* GSSAPI */
2770: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2771: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2772: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2773: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2774: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2775: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2776: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2777: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2778: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2779: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2780: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2781: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2782: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2783: dump_cfg_fmtint(oTunnel, o->tun_open);
2784: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2785: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2786: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2787:
2788: /* Integer options */
2789: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2790: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2791: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2792: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2793: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2794: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2795:
2796: /* String options */
2797: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 2798: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 2799: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 2800: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 2801: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 2802: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2803: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.253 markus 2804: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 2805: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 2806: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 2807: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
2808: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 2809: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 2810: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 2811: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 2812: dump_cfg_string(oMacs, o->macs);
1.266 djm 2813: #ifdef ENABLE_PKCS11
1.221 djm 2814: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 2815: #endif
1.310 djm 2816: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 2817: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.242 djm 2818: dump_cfg_string(oPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.230 djm 2819: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2820: dump_cfg_string(oXAuthLocation, o->xauth_location);
2821:
1.230 djm 2822: /* Forwards */
1.221 djm 2823: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2824: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2825: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2826:
2827: /* String array options */
2828: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2829: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 2830: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 2831: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2832: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2833: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 2834: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 2835: dump_cfg_strarray_oneline(oLogVerbose,
2836: o->num_log_verbose, o->log_verbose);
1.221 djm 2837:
2838: /* Special cases */
1.334 djm 2839:
2840: /* AddKeysToAgent */
2841: if (o->add_keys_to_agent_lifespan <= 0)
2842: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
2843: else {
2844: printf("addkeystoagent%s %d\n",
2845: o->add_keys_to_agent == 3 ? " confirm" : "",
2846: o->add_keys_to_agent_lifespan);
2847: }
1.319 djm 2848:
2849: /* oForwardAgent */
2850: if (o->forward_agent_sock_path == NULL)
2851: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2852: else
2853: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 2854:
2855: /* oConnectTimeout */
2856: if (o->connection_timeout == -1)
2857: printf("connecttimeout none\n");
2858: else
2859: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2860:
2861: /* oTunnelDevice */
2862: printf("tunneldevice");
2863: if (o->tun_local == SSH_TUNID_ANY)
2864: printf(" any");
2865: else
2866: printf(" %d", o->tun_local);
2867: if (o->tun_remote == SSH_TUNID_ANY)
2868: printf(":any");
2869: else
2870: printf(":%d", o->tun_remote);
2871: printf("\n");
2872:
2873: /* oCanonicalizePermittedCNAMEs */
2874: if ( o->num_permitted_cnames > 0) {
2875: printf("canonicalizePermittedcnames");
2876: for (i = 0; i < o->num_permitted_cnames; i++) {
2877: printf(" %s:%s", o->permitted_cnames[i].source_list,
2878: o->permitted_cnames[i].target_list);
2879: }
2880: printf("\n");
2881: }
2882:
2883: /* oControlPersist */
2884: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2885: dump_cfg_fmtint(oControlPersist, o->control_persist);
2886: else
2887: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2888:
2889: /* oEscapeChar */
2890: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2891: printf("escapechar none\n");
2892: else {
1.257 djm 2893: vis(buf, o->escape_char, VIS_WHITE, 0);
2894: printf("escapechar %s\n", buf);
1.221 djm 2895: }
2896:
2897: /* oIPQoS */
2898: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2899: printf("%s\n", iptos2str(o->ip_qos_bulk));
2900:
2901: /* oRekeyLimit */
1.249 dtucker 2902: printf("rekeylimit %llu %d\n",
2903: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 2904:
2905: /* oStreamLocalBindMask */
2906: printf("streamlocalbindmask 0%o\n",
2907: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 2908:
2909: /* oLogFacility */
2910: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 2911:
2912: /* oProxyCommand / oProxyJump */
2913: if (o->jump_host == NULL)
2914: dump_cfg_string(oProxyCommand, o->proxy_command);
2915: else {
2916: /* Check for numeric addresses */
2917: i = strchr(o->jump_host, ':') != NULL ||
2918: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
2919: snprintf(buf, sizeof(buf), "%d", o->jump_port);
2920: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 2921: /* optional additional jump spec */
2922: o->jump_extra == NULL ? "" : o->jump_extra,
2923: o->jump_extra == NULL ? "" : ",",
1.257 djm 2924: /* optional user */
2925: o->jump_user == NULL ? "" : o->jump_user,
2926: o->jump_user == NULL ? "" : "@",
2927: /* opening [ if hostname is numeric */
2928: i ? "[" : "",
2929: /* mandatory hostname */
2930: o->jump_host,
2931: /* closing ] if hostname is numeric */
2932: i ? "]" : "",
2933: /* optional port number */
2934: o->jump_port <= 0 ? "" : ":",
1.259 djm 2935: o->jump_port <= 0 ? "" : buf);
1.257 djm 2936: }
1.1 deraadt 2937: }
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