Annotation of src/usr.bin/ssh/readconf.c, Revision 1.358
1.358 ! dtucker 1: /* $OpenBSD: readconf.c,v 1.357 2021/06/08 22:06:12 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,
1.358 ! dtucker 134: oXAuthLocation,
1.317 dtucker 135: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.351 markus 136: oPermitRemoteOpen,
1.253 markus 137: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 138: oUser, oEscapeChar, oProxyCommand,
1.17 markus 139: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
140: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 141: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 142: oLogFacility, oLogLevel, oLogVerbose, oCiphers, oMacs,
1.221 djm 143: oPubkeyAuthentication,
1.67 markus 144: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 145: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 146: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 147: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 148: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 149: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 150: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 151: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 152: oHashKnownHosts,
1.277 bluhm 153: oTunnel, oTunnelDevice,
154: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 155: oVisualHostKey,
1.205 djm 156: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 157: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
158: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 159: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.350 dtucker 160: oFingerprintHash, oUpdateHostkeys, oHostbasedAcceptedAlgorithms,
1.349 dtucker 161: oPubkeyAcceptedAlgorithms, oCASignatureAlgorithms, oProxyJump,
1.346 djm 162: oSecurityKeyProvider, oKnownHostsCommand,
1.273 djm 163: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 164: } OpCodes;
165:
166: /* Textual representations of the tokens. */
167:
1.17 markus 168: static struct {
169: const char *name;
170: OpCodes opcode;
171: } keywords[] = {
1.266 djm 172: /* Deprecated options */
1.273 djm 173: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 174: { "cipher", oDeprecated },
1.266 djm 175: { "fallbacktorsh", oDeprecated },
176: { "globalknownhostsfile2", oDeprecated },
177: { "rhostsauthentication", oDeprecated },
178: { "userknownhostsfile2", oDeprecated },
179: { "useroaming", oDeprecated },
180: { "usersh", oDeprecated },
1.294 dtucker 181: { "useprivilegedport", oDeprecated },
1.266 djm 182:
183: /* Unsupported options */
184: { "afstokenpassing", oUnsupported },
185: { "kerberosauthentication", oUnsupported },
186: { "kerberostgtpassing", oUnsupported },
1.318 dtucker 187: { "rsaauthentication", oUnsupported },
188: { "rhostsrsaauthentication", oUnsupported },
189: { "compressionlevel", oUnsupported },
1.266 djm 190:
191: /* Sometimes-unsupported options */
192: #if defined(GSSAPI)
193: { "gssapiauthentication", oGssAuthentication },
194: { "gssapidelegatecredentials", oGssDelegateCreds },
195: # else
196: { "gssapiauthentication", oUnsupported },
197: { "gssapidelegatecredentials", oUnsupported },
198: #endif
199: #ifdef ENABLE_PKCS11
1.304 djm 200: { "pkcs11provider", oPKCS11Provider },
1.266 djm 201: { "smartcarddevice", oPKCS11Provider },
202: # else
203: { "smartcarddevice", oUnsupported },
204: { "pkcs11provider", oUnsupported },
205: #endif
206:
1.17 markus 207: { "forwardagent", oForwardAgent },
208: { "forwardx11", oForwardX11 },
1.123 markus 209: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 210: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 211: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 212: { "xauthlocation", oXAuthLocation },
1.17 markus 213: { "gatewayports", oGatewayPorts },
214: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 215: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
216: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.358 ! dtucker 217: { "challengeresponseauthentication", oKbdInteractiveAuthentication }, /* alias */
! 218: { "skeyauthentication", oKbdInteractiveAuthentication }, /* alias */
! 219: { "tisauthentication", oKbdInteractiveAuthentication }, /* alias */
1.50 markus 220: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 221: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 222: { "hostbasedauthentication", oHostbasedAuthentication },
1.17 markus 223: { "identityfile", oIdentityFile },
1.174 stevesk 224: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 225: { "identitiesonly", oIdentitiesOnly },
1.241 djm 226: { "certificatefile", oCertificateFile },
1.246 jcs 227: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 228: { "identityagent", oIdentityAgent },
1.306 jmc 229: { "hostname", oHostname },
1.52 markus 230: { "hostkeyalias", oHostKeyAlias },
1.17 markus 231: { "proxycommand", oProxyCommand },
232: { "port", oPort },
1.25 markus 233: { "ciphers", oCiphers },
1.62 markus 234: { "macs", oMacs },
1.17 markus 235: { "remoteforward", oRemoteForward },
236: { "localforward", oLocalForward },
1.351 markus 237: { "permitremoteopen", oPermitRemoteOpen },
1.17 markus 238: { "user", oUser },
239: { "host", oHost },
1.206 djm 240: { "match", oMatch },
1.17 markus 241: { "escapechar", oEscapeChar },
242: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 243: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 244: { "connectionattempts", oConnectionAttempts },
245: { "batchmode", oBatchMode },
246: { "checkhostip", oCheckHostIP },
247: { "stricthostkeychecking", oStrictHostKeyChecking },
248: { "compression", oCompression },
1.126 markus 249: { "tcpkeepalive", oTCPKeepAlive },
250: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 251: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 252: { "syslogfacility", oLogFacility },
1.17 markus 253: { "loglevel", oLogLevel },
1.339 djm 254: { "logverbose", oLogVerbose },
1.71 markus 255: { "dynamicforward", oDynamicForward },
1.67 markus 256: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 257: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 258: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 259: { "bindaddress", oBindAddress },
1.282 djm 260: { "bindinterface", oBindInterface },
1.93 deraadt 261: { "clearallforwardings", oClearAllForwardings },
1.101 markus 262: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 263: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 264: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 265: { "rekeylimit", oRekeyLimit },
1.111 djm 266: { "connecttimeout", oConnectTimeout },
1.112 djm 267: { "addressfamily", oAddressFamily },
1.127 markus 268: { "serveraliveinterval", oServerAliveInterval },
269: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 270: { "sendenv", oSendEnv },
1.290 djm 271: { "setenv", oSetEnv },
1.132 djm 272: { "controlpath", oControlPath },
273: { "controlmaster", oControlMaster },
1.187 djm 274: { "controlpersist", oControlPersist },
1.136 djm 275: { "hashknownhosts", oHashKnownHosts },
1.252 djm 276: { "include", oInclude },
1.144 reyk 277: { "tunnel", oTunnel },
278: { "tunneldevice", oTunnelDevice },
279: { "localcommand", oLocalCommand },
280: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 281: { "remotecommand", oRemoteCommand },
1.167 grunk 282: { "visualhostkey", oVisualHostKey },
1.189 djm 283: { "kexalgorithms", oKexAlgorithms },
1.190 djm 284: { "ipqos", oIPQoS },
1.192 djm 285: { "requesttty", oRequestTTY },
1.205 djm 286: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 287: { "canonicaldomains", oCanonicalDomains },
1.209 djm 288: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
289: { "canonicalizehostname", oCanonicalizeHostname },
290: { "canonicalizemaxdots", oCanonicalizeMaxDots },
291: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 292: { "streamlocalbindmask", oStreamLocalBindMask },
293: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 294: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 295: { "fingerprinthash", oFingerprintHash },
1.229 djm 296: { "updatehostkeys", oUpdateHostkeys },
1.354 naddy 297: { "hostbasedacceptedalgorithms", oHostbasedAcceptedAlgorithms },
1.350 dtucker 298: { "hostbasedkeytypes", oHostbasedAcceptedAlgorithms }, /* obsolete */
1.352 dtucker 299: { "pubkeyacceptedalgorithms", oPubkeyAcceptedAlgorithms },
1.349 dtucker 300: { "pubkeyacceptedkeytypes", oPubkeyAcceptedAlgorithms }, /* obsolete */
1.199 djm 301: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 302: { "proxyjump", oProxyJump },
1.318 dtucker 303: { "securitykeyprovider", oSecurityKeyProvider },
1.346 djm 304: { "knownhostscommand", oKnownHostsCommand },
1.171 djm 305:
1.92 stevesk 306: { NULL, oBadOption }
1.13 markus 307: };
308:
1.351 markus 309: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 310:
311: const char *
312: kex_default_pk_alg(void)
313: {
1.344 djm 314: static char *pkalgs;
315:
316: if (pkalgs == NULL) {
317: char *all_key;
318:
319: all_key = sshkey_alg_list(0, 0, 1, ',');
320: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
321: free(all_key);
322: }
323: return pkalgs;
1.320 dtucker 324: }
325:
1.327 dtucker 326: char *
327: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
328: const char *user)
329: {
330: struct ssh_digest_ctx *md;
331: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
332:
333: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
334: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
335: ssh_digest_update(md, host, strlen(host)) < 0 ||
336: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
337: ssh_digest_update(md, user, strlen(user)) < 0 ||
338: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 339: fatal_f("mux digest failed");
1.327 dtucker 340: ssh_digest_free(md);
341: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
342: }
343:
1.19 markus 344: /*
345: * Adds a local TCP/IP port forward to options. Never returns if there is an
346: * error.
347: */
1.1 deraadt 348:
1.26 markus 349: void
1.220 millert 350: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 351: {
1.220 millert 352: struct Forward *fwd;
1.251 djm 353: int i;
1.185 djm 354:
1.251 djm 355: /* Don't add duplicates */
356: for (i = 0; i < options->num_local_forwards; i++) {
357: if (forward_equals(newfwd, options->local_forwards + i))
358: return;
359: }
1.234 deraadt 360: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 361: options->num_local_forwards + 1,
362: sizeof(*options->local_forwards));
1.17 markus 363: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 364:
1.172 stevesk 365: fwd->listen_host = newfwd->listen_host;
1.135 djm 366: fwd->listen_port = newfwd->listen_port;
1.220 millert 367: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 368: fwd->connect_host = newfwd->connect_host;
1.135 djm 369: fwd->connect_port = newfwd->connect_port;
1.220 millert 370: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 371: }
372:
1.19 markus 373: /*
374: * Adds a remote TCP/IP port forward to options. Never returns if there is
375: * an error.
376: */
1.1 deraadt 377:
1.26 markus 378: void
1.220 millert 379: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 380: {
1.220 millert 381: struct Forward *fwd;
1.251 djm 382: int i;
1.185 djm 383:
1.251 djm 384: /* Don't add duplicates */
385: for (i = 0; i < options->num_remote_forwards; i++) {
386: if (forward_equals(newfwd, options->remote_forwards + i))
387: return;
388: }
1.234 deraadt 389: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 390: options->num_remote_forwards + 1,
391: sizeof(*options->remote_forwards));
1.17 markus 392: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 393:
1.172 stevesk 394: fwd->listen_host = newfwd->listen_host;
1.135 djm 395: fwd->listen_port = newfwd->listen_port;
1.220 millert 396: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 397: fwd->connect_host = newfwd->connect_host;
1.135 djm 398: fwd->connect_port = newfwd->connect_port;
1.220 millert 399: fwd->connect_path = newfwd->connect_path;
1.194 markus 400: fwd->handle = newfwd->handle;
1.184 markus 401: fwd->allocated_port = 0;
1.1 deraadt 402: }
403:
1.90 stevesk 404: static void
405: clear_forwardings(Options *options)
406: {
407: int i;
408:
1.135 djm 409: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 410: free(options->local_forwards[i].listen_host);
1.220 millert 411: free(options->local_forwards[i].listen_path);
1.202 djm 412: free(options->local_forwards[i].connect_host);
1.220 millert 413: free(options->local_forwards[i].connect_path);
1.135 djm 414: }
1.185 djm 415: if (options->num_local_forwards > 0) {
1.202 djm 416: free(options->local_forwards);
1.185 djm 417: options->local_forwards = NULL;
418: }
1.90 stevesk 419: options->num_local_forwards = 0;
1.135 djm 420: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 421: free(options->remote_forwards[i].listen_host);
1.220 millert 422: free(options->remote_forwards[i].listen_path);
1.202 djm 423: free(options->remote_forwards[i].connect_host);
1.220 millert 424: free(options->remote_forwards[i].connect_path);
1.135 djm 425: }
1.185 djm 426: if (options->num_remote_forwards > 0) {
1.202 djm 427: free(options->remote_forwards);
1.185 djm 428: options->remote_forwards = NULL;
429: }
1.90 stevesk 430: options->num_remote_forwards = 0;
1.145 reyk 431: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 432: }
433:
1.195 dtucker 434: void
1.241 djm 435: add_certificate_file(Options *options, const char *path, int userprovided)
436: {
437: int i;
438:
439: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
440: fatal("Too many certificate files specified (max %d)",
441: SSH_MAX_CERTIFICATE_FILES);
442:
443: /* Avoid registering duplicates */
444: for (i = 0; i < options->num_certificate_files; i++) {
445: if (options->certificate_file_userprovided[i] == userprovided &&
446: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 447: debug2_f("ignoring duplicate key %s", path);
1.241 djm 448: return;
449: }
450: }
451:
452: options->certificate_file_userprovided[options->num_certificate_files] =
453: userprovided;
454: options->certificate_files[options->num_certificate_files++] =
455: xstrdup(path);
456: }
457:
458: void
1.195 dtucker 459: add_identity_file(Options *options, const char *dir, const char *filename,
460: int userprovided)
461: {
462: char *path;
1.219 djm 463: int i;
1.195 dtucker 464:
465: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
466: fatal("Too many identity files specified (max %d)",
467: SSH_MAX_IDENTITY_FILES);
468:
469: if (dir == NULL) /* no dir, filename is absolute */
470: path = xstrdup(filename);
1.276 djm 471: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
472: fatal("Identity file path %s too long", path);
1.219 djm 473:
474: /* Avoid registering duplicates */
475: for (i = 0; i < options->num_identity_files; i++) {
476: if (options->identity_file_userprovided[i] == userprovided &&
477: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 478: debug2_f("ignoring duplicate key %s", path);
1.219 djm 479: free(path);
480: return;
481: }
482: }
1.195 dtucker 483:
484: options->identity_file_userprovided[options->num_identity_files] =
485: userprovided;
486: options->identity_files[options->num_identity_files++] = path;
487: }
488:
1.206 djm 489: int
490: default_ssh_port(void)
491: {
492: static int port;
493: struct servent *sp;
494:
495: if (port == 0) {
496: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
497: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
498: }
499: return port;
500: }
501:
502: /*
503: * Execute a command in a shell.
504: * Return its exit status or -1 on abnormal exit.
505: */
506: static int
507: execute_in_shell(const char *cmd)
508: {
1.243 dtucker 509: char *shell;
1.206 djm 510: pid_t pid;
1.337 djm 511: int status;
1.206 djm 512:
513: if ((shell = getenv("SHELL")) == NULL)
514: shell = _PATH_BSHELL;
1.308 djm 515:
516: if (access(shell, X_OK) == -1) {
517: fatal("Shell \"%s\" is not executable: %s",
518: shell, strerror(errno));
519: }
1.206 djm 520:
521: debug("Executing command: '%.500s'", cmd);
522:
523: /* Fork and execute the command. */
524: if ((pid = fork()) == 0) {
1.245 djm 525: char *argv[4];
1.206 djm 526:
1.337 djm 527: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 528: fatal_f("stdfd_devnull failed");
1.206 djm 529: closefrom(STDERR_FILENO + 1);
1.245 djm 530:
531: argv[0] = shell;
532: argv[1] = "-c";
533: argv[2] = xstrdup(cmd);
534: argv[3] = NULL;
1.206 djm 535:
536: execv(argv[0], argv);
537: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
538: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 539: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 540: kill(getpid(), SIGTERM);
541: _exit(1);
542: }
543: /* Parent. */
1.307 deraadt 544: if (pid == -1)
1.340 djm 545: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 546:
547: while (waitpid(pid, &status, 0) == -1) {
548: if (errno != EINTR && errno != EAGAIN)
1.340 djm 549: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 550: }
551: if (!WIFEXITED(status)) {
552: error("command '%.100s' exited abnormally", cmd);
553: return -1;
1.221 djm 554: }
1.206 djm 555: debug3("command returned status %d", WEXITSTATUS(status));
556: return WEXITSTATUS(status);
557: }
558:
559: /*
560: * Parse and execute a Match directive.
561: */
562: static int
563: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 564: const char *host_arg, const char *original_host, int final_pass,
565: int *want_final_pass, const char *filename, int linenum)
1.206 djm 566: {
1.221 djm 567: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 568: const char *ruser;
1.221 djm 569: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 570: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 571: char uidstr[32];
1.206 djm 572:
573: /*
574: * Configuration is likely to be incomplete at this point so we
575: * must be prepared to use default values.
576: */
577: port = options->port <= 0 ? default_ssh_port() : options->port;
578: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 579: if (final_pass) {
1.250 djm 580: host = xstrdup(options->hostname);
581: } else if (options->hostname != NULL) {
1.212 djm 582: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 583: host = percent_expand(options->hostname,
584: "h", host_arg, (char *)NULL);
1.250 djm 585: } else {
1.211 djm 586: host = xstrdup(host_arg);
1.250 djm 587: }
1.206 djm 588:
1.221 djm 589: debug2("checking match for '%s' host %s originally %s",
590: cp, host, original_host);
591: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
1.356 djm 592: /* Terminate on comment */
593: if (*attrib == '#') {
594: cp = NULL; /* mark all arguments consumed */
595: break;
596: }
597: arg = criteria = NULL;
1.221 djm 598: this_result = 1;
599: if ((negate = attrib[0] == '!'))
600: attrib++;
1.356 djm 601: /* Criterion "all" has no argument and must appear alone */
1.213 dtucker 602: if (strcasecmp(attrib, "all") == 0) {
1.356 djm 603: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
604: *arg != '\0' && *arg != '#')) {
1.221 djm 605: error("%.200s line %d: '%s' cannot be combined "
606: "with other Match attributes",
607: filename, linenum, oattrib);
1.213 dtucker 608: result = -1;
609: goto out;
610: }
1.356 djm 611: if (arg != NULL && *arg == '#')
612: cp = NULL; /* mark all arguments consumed */
1.221 djm 613: if (result)
614: result = negate ? 0 : 1;
1.213 dtucker 615: goto out;
616: }
1.221 djm 617: attributes++;
1.356 djm 618: /* criteria "final" and "canonical" have no argument */
1.302 djm 619: if (strcasecmp(attrib, "canonical") == 0 ||
620: strcasecmp(attrib, "final") == 0) {
621: /*
622: * If the config requests "Match final" then remember
623: * this so we can perform a second pass later.
624: */
625: if (strcasecmp(attrib, "final") == 0 &&
626: want_final_pass != NULL)
627: *want_final_pass = 1;
628: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 629: if (r == (negate ? 1 : 0))
630: this_result = result = 0;
631: debug3("%.200s line %d: %smatched '%s'",
632: filename, linenum,
633: this_result ? "" : "not ", oattrib);
634: continue;
635: }
636: /* All other criteria require an argument */
1.356 djm 637: if ((arg = strdelim(&cp)) == NULL ||
638: *arg == '\0' || *arg == '#') {
1.206 djm 639: error("Missing Match criteria for %s", attrib);
1.211 djm 640: result = -1;
641: goto out;
1.206 djm 642: }
643: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 644: criteria = xstrdup(host);
1.235 djm 645: r = match_hostname(host, arg) == 1;
1.221 djm 646: if (r == (negate ? 1 : 0))
647: this_result = result = 0;
1.206 djm 648: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 649: criteria = xstrdup(original_host);
1.235 djm 650: r = match_hostname(original_host, arg) == 1;
1.221 djm 651: if (r == (negate ? 1 : 0))
652: this_result = result = 0;
1.206 djm 653: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 654: criteria = xstrdup(ruser);
1.235 djm 655: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 656: if (r == (negate ? 1 : 0))
657: this_result = result = 0;
1.206 djm 658: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 659: criteria = xstrdup(pw->pw_name);
1.235 djm 660: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 661: if (r == (negate ? 1 : 0))
662: this_result = result = 0;
1.210 djm 663: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 664: char *conn_hash_hex, *keyalias;
1.327 dtucker 665:
1.206 djm 666: if (gethostname(thishost, sizeof(thishost)) == -1)
667: fatal("gethostname: %s", strerror(errno));
668: strlcpy(shorthost, thishost, sizeof(shorthost));
669: shorthost[strcspn(thishost, ".")] = '\0';
670: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 671: snprintf(uidstr, sizeof(uidstr), "%llu",
672: (unsigned long long)pw->pw_uid);
1.327 dtucker 673: conn_hash_hex = ssh_connection_hash(thishost, host,
1.353 djm 674: portstr, ruser);
1.333 dtucker 675: keyalias = options->host_key_alias ?
676: options->host_key_alias : host;
1.206 djm 677:
678: cmd = percent_expand(arg,
1.327 dtucker 679: "C", conn_hash_hex,
1.206 djm 680: "L", shorthost,
681: "d", pw->pw_dir,
682: "h", host,
1.333 dtucker 683: "k", keyalias,
1.206 djm 684: "l", thishost,
1.221 djm 685: "n", original_host,
1.206 djm 686: "p", portstr,
687: "r", ruser,
688: "u", pw->pw_name,
1.288 djm 689: "i", uidstr,
1.206 djm 690: (char *)NULL);
1.327 dtucker 691: free(conn_hash_hex);
1.217 djm 692: if (result != 1) {
693: /* skip execution if prior predicate failed */
1.221 djm 694: debug3("%.200s line %d: skipped exec "
695: "\"%.100s\"", filename, linenum, cmd);
696: free(cmd);
697: continue;
698: }
699: r = execute_in_shell(cmd);
700: if (r == -1) {
701: fatal("%.200s line %d: match exec "
702: "'%.100s' error", filename,
703: linenum, cmd);
1.217 djm 704: }
1.221 djm 705: criteria = xstrdup(cmd);
1.206 djm 706: free(cmd);
1.221 djm 707: /* Force exit status to boolean */
708: r = r == 0;
709: if (r == (negate ? 1 : 0))
710: this_result = result = 0;
1.206 djm 711: } else {
712: error("Unsupported Match attribute %s", attrib);
1.211 djm 713: result = -1;
714: goto out;
1.206 djm 715: }
1.221 djm 716: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
717: filename, linenum, this_result ? "": "not ",
718: oattrib, criteria);
719: free(criteria);
1.213 dtucker 720: }
721: if (attributes == 0) {
722: error("One or more attributes required for Match");
723: result = -1;
724: goto out;
1.206 djm 725: }
1.221 djm 726: out:
727: if (result != -1)
728: debug2("match %sfound", result ? "" : "not ");
1.206 djm 729: *condition = cp;
1.211 djm 730: free(host);
1.206 djm 731: return result;
732: }
733:
1.286 djm 734: /* Remove environment variable by pattern */
735: static void
736: rm_env(Options *options, const char *arg, const char *filename, int linenum)
737: {
1.330 djm 738: int i, j, onum_send_env = options->num_send_env;
1.286 djm 739: char *cp;
740:
741: /* Remove an environment variable */
742: for (i = 0; i < options->num_send_env; ) {
743: cp = xstrdup(options->send_env[i]);
744: if (!match_pattern(cp, arg + 1)) {
745: free(cp);
746: i++;
747: continue;
748: }
749: debug3("%s line %d: removing environment %s",
750: filename, linenum, cp);
751: free(cp);
752: free(options->send_env[i]);
753: options->send_env[i] = NULL;
754: for (j = i; j < options->num_send_env - 1; j++) {
755: options->send_env[j] = options->send_env[j + 1];
756: options->send_env[j + 1] = NULL;
757: }
758: options->num_send_env--;
759: /* NB. don't increment i */
1.330 djm 760: }
761: if (onum_send_env != options->num_send_env) {
762: options->send_env = xrecallocarray(options->send_env,
763: onum_send_env, options->num_send_env,
764: sizeof(*options->send_env));
1.286 djm 765: }
766: }
767:
1.19 markus 768: /*
1.70 stevesk 769: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 770: */
1.26 markus 771: static OpCodes
1.199 djm 772: parse_token(const char *cp, const char *filename, int linenum,
773: const char *ignored_unknown)
1.1 deraadt 774: {
1.199 djm 775: int i;
1.1 deraadt 776:
1.17 markus 777: for (i = 0; keywords[i].name; i++)
1.199 djm 778: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 779: return keywords[i].opcode;
1.235 djm 780: if (ignored_unknown != NULL &&
781: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 782: return oIgnoredUnknownOption;
1.75 stevesk 783: error("%s: line %d: Bad configuration option: %s",
784: filename, linenum, cp);
1.17 markus 785: return oBadOption;
1.1 deraadt 786: }
787:
1.207 djm 788: /* Multistate option parsing */
789: struct multistate {
790: char *key;
791: int value;
792: };
793: static const struct multistate multistate_flag[] = {
794: { "true", 1 },
795: { "false", 0 },
796: { "yes", 1 },
797: { "no", 0 },
798: { NULL, -1 }
799: };
800: static const struct multistate multistate_yesnoask[] = {
801: { "true", 1 },
802: { "false", 0 },
803: { "yes", 1 },
804: { "no", 0 },
805: { "ask", 2 },
806: { NULL, -1 }
807: };
1.278 djm 808: static const struct multistate multistate_strict_hostkey[] = {
809: { "true", SSH_STRICT_HOSTKEY_YES },
810: { "false", SSH_STRICT_HOSTKEY_OFF },
811: { "yes", SSH_STRICT_HOSTKEY_YES },
812: { "no", SSH_STRICT_HOSTKEY_OFF },
813: { "ask", SSH_STRICT_HOSTKEY_ASK },
814: { "off", SSH_STRICT_HOSTKEY_OFF },
815: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
816: { NULL, -1 }
817: };
1.246 jcs 818: static const struct multistate multistate_yesnoaskconfirm[] = {
819: { "true", 1 },
820: { "false", 0 },
821: { "yes", 1 },
822: { "no", 0 },
823: { "ask", 2 },
824: { "confirm", 3 },
825: { NULL, -1 }
826: };
1.207 djm 827: static const struct multistate multistate_addressfamily[] = {
828: { "inet", AF_INET },
829: { "inet6", AF_INET6 },
830: { "any", AF_UNSPEC },
831: { NULL, -1 }
832: };
833: static const struct multistate multistate_controlmaster[] = {
834: { "true", SSHCTL_MASTER_YES },
835: { "yes", SSHCTL_MASTER_YES },
836: { "false", SSHCTL_MASTER_NO },
837: { "no", SSHCTL_MASTER_NO },
838: { "auto", SSHCTL_MASTER_AUTO },
839: { "ask", SSHCTL_MASTER_ASK },
840: { "autoask", SSHCTL_MASTER_AUTO_ASK },
841: { NULL, -1 }
842: };
843: static const struct multistate multistate_tunnel[] = {
844: { "ethernet", SSH_TUNMODE_ETHERNET },
845: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
846: { "true", SSH_TUNMODE_DEFAULT },
847: { "yes", SSH_TUNMODE_DEFAULT },
848: { "false", SSH_TUNMODE_NO },
849: { "no", SSH_TUNMODE_NO },
850: { NULL, -1 }
851: };
852: static const struct multistate multistate_requesttty[] = {
853: { "true", REQUEST_TTY_YES },
854: { "yes", REQUEST_TTY_YES },
855: { "false", REQUEST_TTY_NO },
856: { "no", REQUEST_TTY_NO },
857: { "force", REQUEST_TTY_FORCE },
858: { "auto", REQUEST_TTY_AUTO },
859: { NULL, -1 }
860: };
1.209 djm 861: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 862: { "true", SSH_CANONICALISE_YES },
863: { "false", SSH_CANONICALISE_NO },
864: { "yes", SSH_CANONICALISE_YES },
865: { "no", SSH_CANONICALISE_NO },
866: { "always", SSH_CANONICALISE_ALWAYS },
867: { NULL, -1 }
868: };
1.322 dtucker 869: static const struct multistate multistate_compression[] = {
870: #ifdef WITH_ZLIB
871: { "yes", COMP_ZLIB },
872: #endif
873: { "no", COMP_NONE },
874: { NULL, -1 }
875: };
1.207 djm 876:
1.334 djm 877: static int
878: parse_multistate_value(const char *arg, const char *filename, int linenum,
879: const struct multistate *multistate_ptr)
880: {
881: int i;
882:
1.344 djm 883: if (!arg || *arg == '\0') {
884: error("%s line %d: missing argument.", filename, linenum);
885: return -1;
886: }
1.334 djm 887: for (i = 0; multistate_ptr[i].key != NULL; i++) {
888: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
889: return multistate_ptr[i].value;
890: }
891: return -1;
892: }
893:
1.19 markus 894: /*
895: * Processes a single option line as used in the configuration files. This
896: * only sets those values that have not already been set.
897: */
1.14 markus 898: int
1.206 djm 899: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 900: const char *original_host, char *line, const char *filename,
901: int linenum, int *activep, int flags)
1.1 deraadt 902: {
1.252 djm 903: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 904: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 905: }
906:
907: #define WHITESPACE " \t\r\n"
908: static int
909: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
910: const char *original_host, char *line, const char *filename,
1.302 djm 911: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 912: {
1.356 djm 913: char *str, **charptr, *endofnumber, *keyword, *arg, *arg2, *p, ch;
1.339 djm 914: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 915: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 916: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 917: int remotefwd, dynamicfwd;
1.164 dtucker 918: LogLevel *log_level_ptr;
1.271 dtucker 919: SyslogFacility *log_facility_ptr;
1.201 dtucker 920: long long val64;
1.102 markus 921: size_t len;
1.220 millert 922: struct Forward fwd;
1.207 djm 923: const struct multistate *multistate_ptr;
1.208 djm 924: struct allowed_cname *cname;
1.252 djm 925: glob_t gl;
1.281 dtucker 926: const char *errstr;
1.356 djm 927: char **oav = NULL, **av;
928: int oac = 0, ac;
929: int ret = -1;
1.106 djm 930:
1.206 djm 931: if (activep == NULL) { /* We are processing a command line directive */
932: cmdline = 1;
933: activep = &cmdline;
934: }
935:
1.267 djm 936: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 937: if ((len = strlen(line)) == 0)
938: return 0;
939: for (len--; len > 0; len--) {
1.267 djm 940: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 941: break;
942: line[len] = '\0';
943: }
1.1 deraadt 944:
1.356 djm 945: str = line;
1.42 provos 946: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 947: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 948: return 0;
1.42 provos 949: /* Ignore leading whitespace. */
950: if (*keyword == '\0')
1.356 djm 951: keyword = strdelim(&str);
1.56 deraadt 952: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 953: return 0;
1.199 djm 954: /* Match lowercase keyword */
1.207 djm 955: lowercase(keyword);
1.17 markus 956:
1.356 djm 957: /* Prepare to parse remainder of line */
958: if (str != NULL)
959: str += strspn(str, WHITESPACE);
960: if (str == NULL || *str == '\0') {
961: error("%s line %d: no argument after keyword \"%s\"",
962: filename, linenum, keyword);
963: return -1;
964: }
1.199 djm 965: opcode = parse_token(keyword, filename, linenum,
966: options->ignored_unknown);
1.356 djm 967: if (argv_split(str, &oac, &oav, 1) != 0) {
968: error("%s line %d: invalid quotes", filename, linenum);
969: return -1;
970: }
971: ac = oac;
972: av = oav;
1.17 markus 973:
974: switch (opcode) {
975: case oBadOption:
1.19 markus 976: /* don't panic, but count bad options */
1.356 djm 977: goto out;
1.273 djm 978: case oIgnore:
1.356 djm 979: argv_consume(&ac);
980: break;
1.199 djm 981: case oIgnoredUnknownOption:
982: debug("%s line %d: Ignored unknown option \"%s\"",
983: filename, linenum, keyword);
1.356 djm 984: argv_consume(&ac);
985: break;
1.111 djm 986: case oConnectTimeout:
987: intptr = &options->connection_timeout;
1.127 markus 988: parse_time:
1.356 djm 989: arg = argv_next(&ac, &av);
1.344 djm 990: if (!arg || *arg == '\0') {
991: error("%s line %d: missing time value.",
1.111 djm 992: filename, linenum);
1.356 djm 993: goto out;
1.344 djm 994: }
1.221 djm 995: if (strcmp(arg, "none") == 0)
996: value = -1;
1.344 djm 997: else if ((value = convtime(arg)) == -1) {
998: error("%s line %d: invalid time value.",
1.111 djm 999: filename, linenum);
1.356 djm 1000: goto out;
1.344 djm 1001: }
1.160 dtucker 1002: if (*activep && *intptr == -1)
1.111 djm 1003: *intptr = value;
1004: break;
1005:
1.17 markus 1006: case oForwardAgent:
1007: intptr = &options->forward_agent;
1.319 djm 1008:
1.356 djm 1009: arg = argv_next(&ac, &av);
1.344 djm 1010: if (!arg || *arg == '\0') {
1011: error("%s line %d: missing argument.",
1.319 djm 1012: filename, linenum);
1.356 djm 1013: goto out;
1.344 djm 1014: }
1.319 djm 1015:
1016: value = -1;
1017: multistate_ptr = multistate_flag;
1018: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1019: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1020: value = multistate_ptr[i].value;
1021: break;
1022: }
1023: }
1024: if (value != -1) {
1025: if (*activep && *intptr == -1)
1026: *intptr = value;
1027: break;
1028: }
1029: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1030: if (*activep && *intptr == -1)
1031: *intptr = 1;
1032:
1033: charptr = &options->forward_agent_sock_path;
1034: goto parse_agent_path;
1035:
1036: case oForwardX11:
1037: intptr = &options->forward_x11;
1.207 djm 1038: parse_flag:
1039: multistate_ptr = multistate_flag;
1040: parse_multistate:
1.356 djm 1041: arg = argv_next(&ac, &av);
1.334 djm 1042: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1043: multistate_ptr)) == -1) {
1.344 djm 1044: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1045: filename, linenum, arg);
1.356 djm 1046: goto out;
1.334 djm 1047: }
1.17 markus 1048: if (*activep && *intptr == -1)
1049: *intptr = value;
1050: break;
1051:
1.123 markus 1052: case oForwardX11Trusted:
1053: intptr = &options->forward_x11_trusted;
1054: goto parse_flag;
1.221 djm 1055:
1.186 djm 1056: case oForwardX11Timeout:
1057: intptr = &options->forward_x11_timeout;
1058: goto parse_time;
1.123 markus 1059:
1.17 markus 1060: case oGatewayPorts:
1.220 millert 1061: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1062: goto parse_flag;
1063:
1.153 markus 1064: case oExitOnForwardFailure:
1065: intptr = &options->exit_on_forward_failure;
1066: goto parse_flag;
1067:
1.17 markus 1068: case oPasswordAuthentication:
1069: intptr = &options->password_authentication;
1070: goto parse_flag;
1071:
1.48 markus 1072: case oKbdInteractiveAuthentication:
1073: intptr = &options->kbd_interactive_authentication;
1074: goto parse_flag;
1075:
1076: case oKbdInteractiveDevices:
1077: charptr = &options->kbd_interactive_devices;
1078: goto parse_string;
1079:
1.50 markus 1080: case oPubkeyAuthentication:
1081: intptr = &options->pubkey_authentication;
1.30 markus 1082: goto parse_flag;
1083:
1.72 markus 1084: case oHostbasedAuthentication:
1085: intptr = &options->hostbased_authentication;
1086: goto parse_flag;
1087:
1.118 markus 1088: case oGssAuthentication:
1089: intptr = &options->gss_authentication;
1090: goto parse_flag;
1091:
1092: case oGssDelegateCreds:
1093: intptr = &options->gss_deleg_creds;
1094: goto parse_flag;
1095:
1.17 markus 1096: case oBatchMode:
1097: intptr = &options->batch_mode;
1098: goto parse_flag;
1099:
1100: case oCheckHostIP:
1101: intptr = &options->check_host_ip;
1.167 grunk 1102: goto parse_flag;
1.17 markus 1103:
1.107 jakob 1104: case oVerifyHostKeyDNS:
1105: intptr = &options->verify_host_key_dns;
1.207 djm 1106: multistate_ptr = multistate_yesnoask;
1107: goto parse_multistate;
1.107 jakob 1108:
1.17 markus 1109: case oStrictHostKeyChecking:
1110: intptr = &options->strict_host_key_checking;
1.278 djm 1111: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1112: goto parse_multistate;
1.17 markus 1113:
1114: case oCompression:
1115: intptr = &options->compression;
1.322 dtucker 1116: multistate_ptr = multistate_compression;
1117: goto parse_multistate;
1.17 markus 1118:
1.126 markus 1119: case oTCPKeepAlive:
1120: intptr = &options->tcp_keep_alive;
1.17 markus 1121: goto parse_flag;
1122:
1.91 markus 1123: case oNoHostAuthenticationForLocalhost:
1124: intptr = &options->no_host_authentication_for_localhost;
1125: goto parse_flag;
1126:
1.17 markus 1127: case oNumberOfPasswordPrompts:
1128: intptr = &options->number_of_password_prompts;
1129: goto parse_int;
1130:
1.105 markus 1131: case oRekeyLimit:
1.356 djm 1132: arg = argv_next(&ac, &av);
1.344 djm 1133: if (!arg || *arg == '\0') {
1134: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1135: linenum);
1.356 djm 1136: goto out;
1.344 djm 1137: }
1.198 dtucker 1138: if (strcmp(arg, "default") == 0) {
1139: val64 = 0;
1140: } else {
1.344 djm 1141: if (scan_scaled(arg, &val64) == -1) {
1142: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1143: filename, linenum, arg, strerror(errno));
1.356 djm 1144: goto out;
1.344 djm 1145: }
1146: if (val64 != 0 && val64 < 16) {
1147: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1148: filename, linenum);
1.356 djm 1149: goto out;
1.344 djm 1150: }
1.105 markus 1151: }
1.165 djm 1152: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1153: options->rekey_limit = val64;
1.356 djm 1154: if (ac != 0) { /* optional rekey interval present */
1155: if (strcmp(av[0], "none") == 0) {
1156: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1157: break;
1158: }
1159: intptr = &options->rekey_interval;
1160: goto parse_time;
1161: }
1.105 markus 1162: break;
1163:
1.17 markus 1164: case oIdentityFile:
1.356 djm 1165: arg = argv_next(&ac, &av);
1.344 djm 1166: if (!arg || *arg == '\0') {
1167: error("%.200s line %d: Missing argument.",
1168: filename, linenum);
1.356 djm 1169: goto out;
1.344 djm 1170: }
1.17 markus 1171: if (*activep) {
1.50 markus 1172: intptr = &options->num_identity_files;
1.344 djm 1173: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1174: error("%.200s line %d: Too many identity files "
1175: "specified (max %d).", filename, linenum,
1176: SSH_MAX_IDENTITY_FILES);
1.356 djm 1177: goto out;
1.344 djm 1178: }
1.221 djm 1179: add_identity_file(options, NULL,
1180: arg, flags & SSHCONF_USERCONF);
1.17 markus 1181: }
1182: break;
1183:
1.241 djm 1184: case oCertificateFile:
1.356 djm 1185: arg = argv_next(&ac, &av);
1.344 djm 1186: if (!arg || *arg == '\0') {
1187: error("%.200s line %d: Missing argument.",
1.241 djm 1188: filename, linenum);
1.356 djm 1189: goto out;
1.344 djm 1190: }
1.241 djm 1191: if (*activep) {
1192: intptr = &options->num_certificate_files;
1193: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1194: error("%.200s line %d: Too many certificate "
1.241 djm 1195: "files specified (max %d).",
1196: filename, linenum,
1197: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1198: goto out;
1.241 djm 1199: }
1200: add_certificate_file(options, arg,
1201: flags & SSHCONF_USERCONF);
1202: }
1203: break;
1204:
1.34 markus 1205: case oXAuthLocation:
1206: charptr=&options->xauth_location;
1207: goto parse_string;
1208:
1.17 markus 1209: case oUser:
1210: charptr = &options->user;
1211: parse_string:
1.356 djm 1212: arg = argv_next(&ac, &av);
1.344 djm 1213: if (!arg || *arg == '\0') {
1214: error("%.200s line %d: Missing argument.",
1.193 djm 1215: filename, linenum);
1.356 djm 1216: goto out;
1.344 djm 1217: }
1.17 markus 1218: if (*activep && *charptr == NULL)
1.38 provos 1219: *charptr = xstrdup(arg);
1.17 markus 1220: break;
1221:
1222: case oGlobalKnownHostsFile:
1.193 djm 1223: cpptr = (char **)&options->system_hostfiles;
1224: uintptr = &options->num_system_hostfiles;
1225: max_entries = SSH_MAX_HOSTS_FILES;
1226: parse_char_array:
1.356 djm 1227: i = 0;
1.357 djm 1228: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1229: while ((arg = argv_next(&ac, &av)) != NULL) {
1230: if (*arg == '\0') {
1231: error("%s line %d: keyword %s empty argument",
1232: filename, linenum, keyword);
1233: goto out;
1234: }
1235: /* Allow "none" only in first position */
1236: if (strcasecmp(arg, "none") == 0) {
1237: if (i > 0 || ac > 0) {
1238: error("%s line %d: keyword %s \"none\" "
1239: "argument must appear alone.",
1240: filename, linenum, keyword);
1241: goto out;
1242: }
1243: }
1244: i++;
1.357 djm 1245: if (*activep && value) {
1.344 djm 1246: if ((*uintptr) >= max_entries) {
1.356 djm 1247: error("%s line %d: too many %s "
1248: "entries.", filename, linenum,
1249: keyword);
1250: goto out;
1.344 djm 1251: }
1.193 djm 1252: cpptr[(*uintptr)++] = xstrdup(arg);
1253: }
1254: }
1.356 djm 1255: break;
1.17 markus 1256:
1257: case oUserKnownHostsFile:
1.193 djm 1258: cpptr = (char **)&options->user_hostfiles;
1259: uintptr = &options->num_user_hostfiles;
1260: max_entries = SSH_MAX_HOSTS_FILES;
1261: goto parse_char_array;
1.27 markus 1262:
1.306 jmc 1263: case oHostname:
1.17 markus 1264: charptr = &options->hostname;
1265: goto parse_string;
1266:
1.52 markus 1267: case oHostKeyAlias:
1268: charptr = &options->host_key_alias;
1269: goto parse_string;
1270:
1.67 markus 1271: case oPreferredAuthentications:
1272: charptr = &options->preferred_authentications;
1273: goto parse_string;
1274:
1.77 markus 1275: case oBindAddress:
1276: charptr = &options->bind_address;
1277: goto parse_string;
1278:
1.282 djm 1279: case oBindInterface:
1280: charptr = &options->bind_interface;
1281: goto parse_string;
1282:
1.183 markus 1283: case oPKCS11Provider:
1284: charptr = &options->pkcs11_provider;
1.86 markus 1285: goto parse_string;
1.85 jakob 1286:
1.310 djm 1287: case oSecurityKeyProvider:
1288: charptr = &options->sk_provider;
1289: goto parse_string;
1290:
1.346 djm 1291: case oKnownHostsCommand:
1292: charptr = &options->known_hosts_command;
1293: goto parse_command;
1294:
1.17 markus 1295: case oProxyCommand:
1.144 reyk 1296: charptr = &options->proxy_command;
1.257 djm 1297: /* Ignore ProxyCommand if ProxyJump already specified */
1298: if (options->jump_host != NULL)
1299: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1300: parse_command:
1.356 djm 1301: if (str == NULL) {
1.344 djm 1302: error("%.200s line %d: Missing argument.",
1303: filename, linenum);
1.356 djm 1304: goto out;
1.344 djm 1305: }
1.356 djm 1306: len = strspn(str, WHITESPACE "=");
1.17 markus 1307: if (*activep && *charptr == NULL)
1.356 djm 1308: *charptr = xstrdup(str + len);
1309: argv_consume(&ac);
1310: break;
1.17 markus 1311:
1.257 djm 1312: case oProxyJump:
1.356 djm 1313: if (str == NULL) {
1.344 djm 1314: error("%.200s line %d: Missing argument.",
1.257 djm 1315: filename, linenum);
1.356 djm 1316: goto out;
1.257 djm 1317: }
1.356 djm 1318: len = strspn(str, WHITESPACE "=");
1319: /* XXX use argv? */
1320: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1321: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1322: filename, linenum, str + len);
1323: goto out;
1.257 djm 1324: }
1.356 djm 1325: argv_consume(&ac);
1326: break;
1.257 djm 1327:
1.17 markus 1328: case oPort:
1.356 djm 1329: arg = argv_next(&ac, &av);
1.344 djm 1330: if (!arg || *arg == '\0') {
1331: error("%.200s line %d: Missing argument.",
1.300 naddy 1332: filename, linenum);
1.356 djm 1333: goto out;
1.344 djm 1334: }
1.300 naddy 1335: value = a2port(arg);
1.344 djm 1336: if (value <= 0) {
1337: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1338: filename, linenum, arg);
1.356 djm 1339: goto out;
1.344 djm 1340: }
1.300 naddy 1341: if (*activep && options->port == -1)
1342: options->port = value;
1343: break;
1344:
1345: case oConnectionAttempts:
1346: intptr = &options->connection_attempts;
1.17 markus 1347: parse_int:
1.356 djm 1348: arg = argv_next(&ac, &av);
1.344 djm 1349: if ((errstr = atoi_err(arg, &value)) != NULL) {
1350: error("%s line %d: integer value %s.",
1.281 dtucker 1351: filename, linenum, errstr);
1.356 djm 1352: goto out;
1.344 djm 1353: }
1.17 markus 1354: if (*activep && *intptr == -1)
1355: *intptr = value;
1356: break;
1357:
1.25 markus 1358: case oCiphers:
1.356 djm 1359: arg = argv_next(&ac, &av);
1.344 djm 1360: if (!arg || *arg == '\0') {
1361: error("%.200s line %d: Missing argument.",
1362: filename, linenum);
1.356 djm 1363: goto out;
1.344 djm 1364: }
1.309 naddy 1365: if (*arg != '-' &&
1.344 djm 1366: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1367: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1368: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1369: goto out;
1.344 djm 1370: }
1.25 markus 1371: if (*activep && options->ciphers == NULL)
1.38 provos 1372: options->ciphers = xstrdup(arg);
1.25 markus 1373: break;
1374:
1.62 markus 1375: case oMacs:
1.356 djm 1376: arg = argv_next(&ac, &av);
1.344 djm 1377: if (!arg || *arg == '\0') {
1378: error("%.200s line %d: Missing argument.",
1379: filename, linenum);
1.356 djm 1380: goto out;
1.344 djm 1381: }
1.309 naddy 1382: if (*arg != '-' &&
1.344 djm 1383: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1384: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1385: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1386: goto out;
1.344 djm 1387: }
1.62 markus 1388: if (*activep && options->macs == NULL)
1389: options->macs = xstrdup(arg);
1390: break;
1391:
1.189 djm 1392: case oKexAlgorithms:
1.356 djm 1393: arg = argv_next(&ac, &av);
1.344 djm 1394: if (!arg || *arg == '\0') {
1395: error("%.200s line %d: Missing argument.",
1.189 djm 1396: filename, linenum);
1.356 djm 1397: goto out;
1.344 djm 1398: }
1.268 djm 1399: if (*arg != '-' &&
1.309 naddy 1400: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1401: arg + 1 : arg)) {
1402: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1403: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1404: goto out;
1.344 djm 1405: }
1.189 djm 1406: if (*activep && options->kex_algorithms == NULL)
1407: options->kex_algorithms = xstrdup(arg);
1408: break;
1409:
1.76 markus 1410: case oHostKeyAlgorithms:
1.238 markus 1411: charptr = &options->hostkeyalgorithms;
1.349 dtucker 1412: parse_pubkey_algos:
1.356 djm 1413: arg = argv_next(&ac, &av);
1.344 djm 1414: if (!arg || *arg == '\0') {
1415: error("%.200s line %d: Missing argument.",
1.238 markus 1416: filename, linenum);
1.356 djm 1417: goto out;
1.344 djm 1418: }
1.268 djm 1419: if (*arg != '-' &&
1.309 naddy 1420: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.344 djm 1421: arg + 1 : arg, 1)) {
1422: error("%s line %d: Bad key types '%s'.",
1423: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1424: goto out;
1.344 djm 1425: }
1.238 markus 1426: if (*activep && *charptr == NULL)
1427: *charptr = xstrdup(arg);
1.76 markus 1428: break;
1429:
1.298 djm 1430: case oCASignatureAlgorithms:
1431: charptr = &options->ca_sign_algorithms;
1.349 dtucker 1432: goto parse_pubkey_algos;
1.298 djm 1433:
1.17 markus 1434: case oLogLevel:
1.164 dtucker 1435: log_level_ptr = &options->log_level;
1.356 djm 1436: arg = argv_next(&ac, &av);
1.38 provos 1437: value = log_level_number(arg);
1.344 djm 1438: if (value == SYSLOG_LEVEL_NOT_SET) {
1439: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1440: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1441: goto out;
1.344 djm 1442: }
1.164 dtucker 1443: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1444: *log_level_ptr = (LogLevel) value;
1.17 markus 1445: break;
1446:
1.271 dtucker 1447: case oLogFacility:
1448: log_facility_ptr = &options->log_facility;
1.356 djm 1449: arg = argv_next(&ac, &av);
1.271 dtucker 1450: value = log_facility_number(arg);
1.344 djm 1451: if (value == SYSLOG_FACILITY_NOT_SET) {
1452: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1453: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1454: goto out;
1.344 djm 1455: }
1.271 dtucker 1456: if (*log_facility_ptr == -1)
1457: *log_facility_ptr = (SyslogFacility) value;
1458: break;
1459:
1.339 djm 1460: case oLogVerbose:
1461: cppptr = &options->log_verbose;
1462: uintptr = &options->num_log_verbose;
1.356 djm 1463: i = 0;
1464: while ((arg = argv_next(&ac, &av)) != NULL) {
1465: if (*arg == '\0') {
1466: error("%s line %d: keyword %s empty argument",
1467: filename, linenum, keyword);
1468: goto out;
1469: }
1470: /* Allow "none" only in first position */
1471: if (strcasecmp(arg, "none") == 0) {
1472: if (i > 0 || ac > 0) {
1473: error("%s line %d: keyword %s \"none\" "
1474: "argument must appear alone.",
1475: filename, linenum, keyword);
1476: goto out;
1477: }
1478: }
1479: i++;
1480: if (*activep && *uintptr == 0) {
1.339 djm 1481: *cppptr = xrecallocarray(*cppptr, *uintptr,
1482: *uintptr + 1, sizeof(**cppptr));
1483: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1484: }
1485: }
1.356 djm 1486: break;
1.339 djm 1487:
1.88 stevesk 1488: case oLocalForward:
1.17 markus 1489: case oRemoteForward:
1.168 stevesk 1490: case oDynamicForward:
1.356 djm 1491: arg = argv_next(&ac, &av);
1.344 djm 1492: if (!arg || *arg == '\0') {
1493: error("%.200s line %d: Missing argument.",
1.88 stevesk 1494: filename, linenum);
1.356 djm 1495: goto out;
1.344 djm 1496: }
1.135 djm 1497:
1.279 markus 1498: remotefwd = (opcode == oRemoteForward);
1499: dynamicfwd = (opcode == oDynamicForward);
1500:
1501: if (!dynamicfwd) {
1.356 djm 1502: arg2 = argv_next(&ac, &av);
1.279 markus 1503: if (arg2 == NULL || *arg2 == '\0') {
1504: if (remotefwd)
1505: dynamicfwd = 1;
1.344 djm 1506: else {
1507: error("%.200s line %d: Missing target "
1.279 markus 1508: "argument.", filename, linenum);
1.356 djm 1509: goto out;
1.344 djm 1510: }
1.279 markus 1511: } else {
1512: /* construct a string for parse_forward */
1513: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1514: arg2);
1515: }
1516: }
1517: if (dynamicfwd)
1.168 stevesk 1518: strlcpy(fwdarg, arg, sizeof(fwdarg));
1519:
1.344 djm 1520: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1521: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1522: filename, linenum);
1.356 djm 1523: goto out;
1.344 djm 1524: }
1.135 djm 1525:
1.88 stevesk 1526: if (*activep) {
1.279 markus 1527: if (remotefwd) {
1528: add_remote_forward(options, &fwd);
1529: } else {
1.135 djm 1530: add_local_forward(options, &fwd);
1.279 markus 1531: }
1.88 stevesk 1532: }
1.17 markus 1533: break;
1.71 markus 1534:
1.351 markus 1535: case oPermitRemoteOpen:
1536: uintptr = &options->num_permitted_remote_opens;
1537: cppptr = &options->permitted_remote_opens;
1.356 djm 1538: arg = argv_next(&ac, &av);
1.351 markus 1539: if (!arg || *arg == '\0')
1540: fatal("%s line %d: missing %s specification",
1541: filename, linenum, lookup_opcode_name(opcode));
1542: uvalue = *uintptr; /* modified later */
1543: if (strcmp(arg, "any") == 0 || strcmp(arg, "none") == 0) {
1544: if (*activep && uvalue == 0) {
1545: *uintptr = 1;
1546: *cppptr = xcalloc(1, sizeof(**cppptr));
1547: (*cppptr)[0] = xstrdup(arg);
1548: }
1549: break;
1550: }
1.356 djm 1551: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1552: arg2 = xstrdup(arg);
1553: ch = '\0';
1554: p = hpdelim2(&arg, &ch);
1555: if (p == NULL || ch == '/') {
1556: fatal("%s line %d: missing host in %s",
1557: filename, linenum,
1558: lookup_opcode_name(opcode));
1559: }
1560: p = cleanhostname(p);
1561: /*
1562: * don't want to use permitopen_port to avoid
1563: * dependency on channels.[ch] here.
1564: */
1565: if (arg == NULL ||
1566: (strcmp(arg, "*") != 0 && a2port(arg) <= 0)) {
1567: fatal("%s line %d: bad port number in %s",
1568: filename, linenum,
1569: lookup_opcode_name(opcode));
1570: }
1571: if (*activep && uvalue == 0) {
1572: opt_array_append(filename, linenum,
1573: lookup_opcode_name(opcode),
1574: cppptr, uintptr, arg2);
1575: }
1576: free(arg2);
1577: }
1578: break;
1579:
1.90 stevesk 1580: case oClearAllForwardings:
1581: intptr = &options->clear_forwardings;
1582: goto parse_flag;
1583:
1.17 markus 1584: case oHost:
1.344 djm 1585: if (cmdline) {
1586: error("Host directive not supported as a command-line "
1.206 djm 1587: "option");
1.356 djm 1588: goto out;
1.344 djm 1589: }
1.17 markus 1590: *activep = 0;
1.191 djm 1591: arg2 = NULL;
1.356 djm 1592: while ((arg = argv_next(&ac, &av)) != NULL) {
1593: if (*arg == '\0') {
1594: error("%s line %d: keyword %s empty argument",
1595: filename, linenum, keyword);
1596: goto out;
1597: }
1598: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1599: argv_consume(&ac);
1.252 djm 1600: break;
1.356 djm 1601: }
1.191 djm 1602: negated = *arg == '!';
1603: if (negated)
1604: arg++;
1.38 provos 1605: if (match_pattern(host, arg)) {
1.191 djm 1606: if (negated) {
1607: debug("%.200s line %d: Skipping Host "
1608: "block because of negated match "
1609: "for %.100s", filename, linenum,
1610: arg);
1611: *activep = 0;
1.356 djm 1612: argv_consume(&ac);
1.191 djm 1613: break;
1614: }
1615: if (!*activep)
1616: arg2 = arg; /* logged below */
1.17 markus 1617: *activep = 1;
1618: }
1.191 djm 1619: }
1620: if (*activep)
1621: debug("%.200s line %d: Applying options for %.100s",
1622: filename, linenum, arg2);
1.356 djm 1623: break;
1.17 markus 1624:
1.206 djm 1625: case oMatch:
1.344 djm 1626: if (cmdline) {
1627: error("Host directive not supported as a command-line "
1.206 djm 1628: "option");
1.356 djm 1629: goto out;
1.344 djm 1630: }
1.356 djm 1631: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1632: flags & SSHCONF_FINAL, want_final_pass,
1633: filename, linenum);
1.344 djm 1634: if (value < 0) {
1635: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1636: linenum);
1.356 djm 1637: goto out;
1.344 djm 1638: }
1.252 djm 1639: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1640: /*
1641: * If match_cfg_line() didn't consume all its arguments then
1642: * arrange for the extra arguments check below to fail.
1643: */
1644:
1645: if (str == NULL || *str == '\0')
1646: argv_consume(&ac);
1.206 djm 1647: break;
1648:
1.17 markus 1649: case oEscapeChar:
1650: intptr = &options->escape_char;
1.356 djm 1651: arg = argv_next(&ac, &av);
1.344 djm 1652: if (!arg || *arg == '\0') {
1653: error("%.200s line %d: Missing argument.",
1654: filename, linenum);
1.356 djm 1655: goto out;
1.344 djm 1656: }
1.236 djm 1657: if (strcmp(arg, "none") == 0)
1658: value = SSH_ESCAPECHAR_NONE;
1659: else if (arg[1] == '\0')
1660: value = (u_char) arg[0];
1661: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1662: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1663: value = (u_char) arg[1] & 31;
1.17 markus 1664: else {
1.344 djm 1665: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1666: filename, linenum);
1.356 djm 1667: goto out;
1.17 markus 1668: }
1669: if (*activep && *intptr == -1)
1670: *intptr = value;
1.112 djm 1671: break;
1672:
1673: case oAddressFamily:
1.114 djm 1674: intptr = &options->address_family;
1.207 djm 1675: multistate_ptr = multistate_addressfamily;
1676: goto parse_multistate;
1.17 markus 1677:
1.101 markus 1678: case oEnableSSHKeysign:
1679: intptr = &options->enable_ssh_keysign;
1680: goto parse_flag;
1681:
1.128 markus 1682: case oIdentitiesOnly:
1683: intptr = &options->identities_only;
1684: goto parse_flag;
1685:
1.127 markus 1686: case oServerAliveInterval:
1687: intptr = &options->server_alive_interval;
1688: goto parse_time;
1689:
1690: case oServerAliveCountMax:
1691: intptr = &options->server_alive_count_max;
1692: goto parse_int;
1693:
1.130 djm 1694: case oSendEnv:
1.356 djm 1695: while ((arg = argv_next(&ac, &av)) != NULL) {
1696: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1697: error("%s line %d: Invalid environment name.",
1.130 djm 1698: filename, linenum);
1.356 djm 1699: goto out;
1.344 djm 1700: }
1.137 djm 1701: if (!*activep)
1702: continue;
1.286 djm 1703: if (*arg == '-') {
1704: /* Removing an env var */
1705: rm_env(options, arg, filename, linenum);
1706: continue;
1707: } else {
1708: /* Adding an env var */
1.344 djm 1709: if (options->num_send_env >= INT_MAX) {
1710: error("%s line %d: too many send env.",
1.286 djm 1711: filename, linenum);
1.356 djm 1712: goto out;
1.344 djm 1713: }
1.290 djm 1714: options->send_env = xrecallocarray(
1715: options->send_env, options->num_send_env,
1.291 djm 1716: options->num_send_env + 1,
1.290 djm 1717: sizeof(*options->send_env));
1.286 djm 1718: options->send_env[options->num_send_env++] =
1719: xstrdup(arg);
1720: }
1.130 djm 1721: }
1722: break;
1723:
1.290 djm 1724: case oSetEnv:
1725: value = options->num_setenv;
1.356 djm 1726: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1727: if (strchr(arg, '=') == NULL) {
1728: error("%s line %d: Invalid SetEnv.",
1.290 djm 1729: filename, linenum);
1.356 djm 1730: goto out;
1.344 djm 1731: }
1.290 djm 1732: if (!*activep || value != 0)
1733: continue;
1734: /* Adding a setenv var */
1.344 djm 1735: if (options->num_setenv >= INT_MAX) {
1736: error("%s line %d: too many SetEnv.",
1.290 djm 1737: filename, linenum);
1.356 djm 1738: goto out;
1.344 djm 1739: }
1.290 djm 1740: options->setenv = xrecallocarray(
1741: options->setenv, options->num_setenv,
1742: options->num_setenv + 1, sizeof(*options->setenv));
1743: options->setenv[options->num_setenv++] = xstrdup(arg);
1744: }
1745: break;
1746:
1.132 djm 1747: case oControlPath:
1748: charptr = &options->control_path;
1749: goto parse_string;
1750:
1751: case oControlMaster:
1752: intptr = &options->control_master;
1.207 djm 1753: multistate_ptr = multistate_controlmaster;
1754: goto parse_multistate;
1.132 djm 1755:
1.187 djm 1756: case oControlPersist:
1757: /* no/false/yes/true, or a time spec */
1758: intptr = &options->control_persist;
1.356 djm 1759: arg = argv_next(&ac, &av);
1.344 djm 1760: if (!arg || *arg == '\0') {
1761: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1762: " argument.", filename, linenum);
1.356 djm 1763: goto out;
1.344 djm 1764: }
1.187 djm 1765: value = 0;
1766: value2 = 0; /* timeout */
1767: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1768: value = 0;
1769: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1770: value = 1;
1771: else if ((value2 = convtime(arg)) >= 0)
1772: value = 1;
1.344 djm 1773: else {
1774: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1775: filename, linenum);
1.356 djm 1776: goto out;
1.344 djm 1777: }
1.187 djm 1778: if (*activep && *intptr == -1) {
1779: *intptr = value;
1780: options->control_persist_timeout = value2;
1781: }
1782: break;
1783:
1.136 djm 1784: case oHashKnownHosts:
1785: intptr = &options->hash_known_hosts;
1786: goto parse_flag;
1787:
1.144 reyk 1788: case oTunnel:
1789: intptr = &options->tun_open;
1.207 djm 1790: multistate_ptr = multistate_tunnel;
1791: goto parse_multistate;
1.144 reyk 1792:
1793: case oTunnelDevice:
1.356 djm 1794: arg = argv_next(&ac, &av);
1.344 djm 1795: if (!arg || *arg == '\0') {
1796: error("%.200s line %d: Missing argument.",
1797: filename, linenum);
1.356 djm 1798: goto out;
1.344 djm 1799: }
1.144 reyk 1800: value = a2tun(arg, &value2);
1.344 djm 1801: if (value == SSH_TUNID_ERR) {
1802: error("%.200s line %d: Bad tun device.",
1803: filename, linenum);
1.356 djm 1804: goto out;
1.344 djm 1805: }
1.355 dtucker 1806: if (*activep && options->tun_local == -1) {
1.144 reyk 1807: options->tun_local = value;
1808: options->tun_remote = value2;
1809: }
1810: break;
1811:
1812: case oLocalCommand:
1813: charptr = &options->local_command;
1814: goto parse_command;
1815:
1816: case oPermitLocalCommand:
1817: intptr = &options->permit_local_command;
1818: goto parse_flag;
1819:
1.277 bluhm 1820: case oRemoteCommand:
1821: charptr = &options->remote_command;
1822: goto parse_command;
1823:
1.167 grunk 1824: case oVisualHostKey:
1825: intptr = &options->visual_host_key;
1826: goto parse_flag;
1827:
1.252 djm 1828: case oInclude:
1.344 djm 1829: if (cmdline) {
1830: error("Include directive not supported as a "
1.252 djm 1831: "command-line option");
1.356 djm 1832: goto out;
1.344 djm 1833: }
1.252 djm 1834: value = 0;
1.356 djm 1835: while ((arg = argv_next(&ac, &av)) != NULL) {
1836: if (*arg == '\0') {
1837: error("%s line %d: keyword %s empty argument",
1838: filename, linenum, keyword);
1839: goto out;
1840: }
1.252 djm 1841: /*
1842: * Ensure all paths are anchored. User configuration
1843: * files may begin with '~/' but system configurations
1844: * must not. If the path is relative, then treat it
1845: * as living in ~/.ssh for user configurations or
1846: * /etc/ssh for system ones.
1847: */
1.344 djm 1848: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1849: error("%.200s line %d: bad include path %s.",
1.252 djm 1850: filename, linenum, arg);
1.356 djm 1851: goto out;
1.344 djm 1852: }
1.301 djm 1853: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1854: xasprintf(&arg2, "%s/%s",
1855: (flags & SSHCONF_USERCONF) ?
1856: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1857: } else
1858: arg2 = xstrdup(arg);
1859: memset(&gl, 0, sizeof(gl));
1860: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1861: if (r == GLOB_NOMATCH) {
1862: debug("%.200s line %d: include %s matched no "
1863: "files",filename, linenum, arg2);
1.269 dtucker 1864: free(arg2);
1.252 djm 1865: continue;
1.344 djm 1866: } else if (r != 0) {
1867: error("%.200s line %d: glob failed for %s.",
1.252 djm 1868: filename, linenum, arg2);
1.356 djm 1869: goto out;
1.344 djm 1870: }
1.252 djm 1871: free(arg2);
1872: oactive = *activep;
1.313 deraadt 1873: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1874: debug3("%.200s line %d: Including file %s "
1875: "depth %d%s", filename, linenum,
1876: gl.gl_pathv[i], depth,
1877: oactive ? "" : " (parse only)");
1878: r = read_config_file_depth(gl.gl_pathv[i],
1879: pw, host, original_host, options,
1880: flags | SSHCONF_CHECKPERM |
1881: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1882: activep, want_final_pass, depth + 1);
1.264 djm 1883: if (r != 1 && errno != ENOENT) {
1.344 djm 1884: error("Can't open user config file "
1.263 djm 1885: "%.100s: %.100s", gl.gl_pathv[i],
1886: strerror(errno));
1.344 djm 1887: globfree(&gl);
1.356 djm 1888: goto out;
1.263 djm 1889: }
1.252 djm 1890: /*
1891: * don't let Match in includes clobber the
1892: * containing file's Match state.
1893: */
1894: *activep = oactive;
1895: if (r != 1)
1896: value = -1;
1897: }
1898: globfree(&gl);
1899: }
1900: if (value != 0)
1.356 djm 1901: ret = value;
1.252 djm 1902: break;
1903:
1.190 djm 1904: case oIPQoS:
1.356 djm 1905: arg = argv_next(&ac, &av);
1.344 djm 1906: if ((value = parse_ipqos(arg)) == -1) {
1907: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1908: filename, linenum, arg);
1.356 djm 1909: goto out;
1.344 djm 1910: }
1.356 djm 1911: arg = argv_next(&ac, &av);
1.190 djm 1912: if (arg == NULL)
1913: value2 = value;
1.344 djm 1914: else if ((value2 = parse_ipqos(arg)) == -1) {
1915: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1916: filename, linenum, arg);
1.356 djm 1917: goto out;
1.344 djm 1918: }
1.355 dtucker 1919: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 1920: options->ip_qos_interactive = value;
1921: options->ip_qos_bulk = value2;
1922: }
1923: break;
1924:
1.192 djm 1925: case oRequestTTY:
1926: intptr = &options->request_tty;
1.207 djm 1927: multistate_ptr = multistate_requesttty;
1928: goto parse_multistate;
1.192 djm 1929:
1.199 djm 1930: case oIgnoreUnknown:
1931: charptr = &options->ignored_unknown;
1932: goto parse_string;
1933:
1.205 djm 1934: case oProxyUseFdpass:
1935: intptr = &options->proxy_use_fdpass;
1936: goto parse_flag;
1937:
1.208 djm 1938: case oCanonicalDomains:
1939: value = options->num_canonical_domains != 0;
1.356 djm 1940: i = 0;
1941: while ((arg = argv_next(&ac, &av)) != NULL) {
1942: if (*arg == '\0') {
1943: error("%s line %d: keyword %s empty argument",
1944: filename, linenum, keyword);
1945: goto out;
1946: }
1947: /* Allow "none" only in first position */
1948: if (strcasecmp(arg, "none") == 0) {
1949: if (i > 0 || ac > 0) {
1950: error("%s line %d: keyword %s \"none\" "
1951: "argument must appear alone.",
1952: filename, linenum, keyword);
1953: goto out;
1954: }
1955: }
1956: i++;
1.280 millert 1957: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 1958: error("%s line %d: %s", filename, linenum,
1.280 millert 1959: errstr);
1.356 djm 1960: goto out;
1.280 millert 1961: }
1.208 djm 1962: if (!*activep || value)
1963: continue;
1.344 djm 1964: if (options->num_canonical_domains >=
1965: MAX_CANON_DOMAINS) {
1966: error("%s line %d: too many hostname suffixes.",
1.208 djm 1967: filename, linenum);
1.356 djm 1968: goto out;
1.344 djm 1969: }
1.208 djm 1970: options->canonical_domains[
1971: options->num_canonical_domains++] = xstrdup(arg);
1972: }
1973: break;
1974:
1.209 djm 1975: case oCanonicalizePermittedCNAMEs:
1.208 djm 1976: value = options->num_permitted_cnames != 0;
1.356 djm 1977: while ((arg = argv_next(&ac, &av)) != NULL) {
1.208 djm 1978: /* Either '*' for everything or 'list:list' */
1979: if (strcmp(arg, "*") == 0)
1980: arg2 = arg;
1981: else {
1982: lowercase(arg);
1983: if ((arg2 = strchr(arg, ':')) == NULL ||
1984: arg2[1] == '\0') {
1.344 djm 1985: error("%s line %d: "
1.208 djm 1986: "Invalid permitted CNAME \"%s\"",
1987: filename, linenum, arg);
1.356 djm 1988: goto out;
1.208 djm 1989: }
1990: *arg2 = '\0';
1991: arg2++;
1992: }
1993: if (!*activep || value)
1994: continue;
1.344 djm 1995: if (options->num_permitted_cnames >=
1996: MAX_CANON_DOMAINS) {
1997: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 1998: filename, linenum);
1.356 djm 1999: goto out;
1.344 djm 2000: }
1.208 djm 2001: cname = options->permitted_cnames +
2002: options->num_permitted_cnames++;
2003: cname->source_list = xstrdup(arg);
2004: cname->target_list = xstrdup(arg2);
2005: }
2006: break;
2007:
1.209 djm 2008: case oCanonicalizeHostname:
2009: intptr = &options->canonicalize_hostname;
2010: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2011: goto parse_multistate;
2012:
1.209 djm 2013: case oCanonicalizeMaxDots:
2014: intptr = &options->canonicalize_max_dots;
1.208 djm 2015: goto parse_int;
2016:
1.209 djm 2017: case oCanonicalizeFallbackLocal:
2018: intptr = &options->canonicalize_fallback_local;
1.208 djm 2019: goto parse_flag;
2020:
1.220 millert 2021: case oStreamLocalBindMask:
1.356 djm 2022: arg = argv_next(&ac, &av);
1.344 djm 2023: if (!arg || *arg == '\0') {
2024: error("%.200s line %d: Missing StreamLocalBindMask "
2025: "argument.", filename, linenum);
1.356 djm 2026: goto out;
1.344 djm 2027: }
1.220 millert 2028: /* Parse mode in octal format */
2029: value = strtol(arg, &endofnumber, 8);
1.344 djm 2030: if (arg == endofnumber || value < 0 || value > 0777) {
2031: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2032: goto out;
1.344 djm 2033: }
1.220 millert 2034: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2035: break;
2036:
2037: case oStreamLocalBindUnlink:
2038: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2039: goto parse_flag;
2040:
1.223 djm 2041: case oRevokedHostKeys:
2042: charptr = &options->revoked_host_keys;
2043: goto parse_string;
2044:
1.224 djm 2045: case oFingerprintHash:
1.225 djm 2046: intptr = &options->fingerprint_hash;
1.356 djm 2047: arg = argv_next(&ac, &av);
1.344 djm 2048: if (!arg || *arg == '\0') {
2049: error("%.200s line %d: Missing argument.",
1.224 djm 2050: filename, linenum);
1.356 djm 2051: goto out;
1.344 djm 2052: }
2053: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2054: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2055: filename, linenum, arg);
1.356 djm 2056: goto out;
1.344 djm 2057: }
1.225 djm 2058: if (*activep && *intptr == -1)
2059: *intptr = value;
1.224 djm 2060: break;
2061:
1.229 djm 2062: case oUpdateHostkeys:
2063: intptr = &options->update_hostkeys;
1.232 djm 2064: multistate_ptr = multistate_yesnoask;
2065: goto parse_multistate;
1.229 djm 2066:
1.350 dtucker 2067: case oHostbasedAcceptedAlgorithms:
2068: charptr = &options->hostbased_accepted_algos;
1.349 dtucker 2069: goto parse_pubkey_algos;
1.238 markus 2070:
1.349 dtucker 2071: case oPubkeyAcceptedAlgorithms:
2072: charptr = &options->pubkey_accepted_algos;
2073: goto parse_pubkey_algos;
1.230 djm 2074:
1.246 jcs 2075: case oAddKeysToAgent:
1.356 djm 2076: arg = argv_next(&ac, &av);
2077: arg2 = argv_next(&ac, &av);
1.334 djm 2078: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2079: multistate_yesnoaskconfirm);
1.334 djm 2080: value2 = 0; /* unlimited lifespan by default */
2081: if (value == 3 && arg2 != NULL) {
2082: /* allow "AddKeysToAgent confirm 5m" */
1.344 djm 2083: if ((value2 = convtime(arg2)) == -1 ||
2084: value2 > INT_MAX) {
2085: error("%s line %d: invalid time value.",
1.334 djm 2086: filename, linenum);
1.356 djm 2087: goto out;
1.344 djm 2088: }
1.334 djm 2089: } else if (value == -1 && arg2 == NULL) {
1.344 djm 2090: if ((value2 = convtime(arg)) == -1 ||
2091: value2 > INT_MAX) {
2092: error("%s line %d: unsupported option",
1.334 djm 2093: filename, linenum);
1.356 djm 2094: goto out;
1.344 djm 2095: }
1.334 djm 2096: value = 1; /* yes */
2097: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2098: error("%s line %d: unsupported option",
1.334 djm 2099: filename, linenum);
1.356 djm 2100: goto out;
1.334 djm 2101: }
2102: if (*activep && options->add_keys_to_agent == -1) {
2103: options->add_keys_to_agent = value;
2104: options->add_keys_to_agent_lifespan = value2;
2105: }
2106: break;
1.246 jcs 2107:
1.253 markus 2108: case oIdentityAgent:
2109: charptr = &options->identity_agent;
1.356 djm 2110: arg = argv_next(&ac, &av);
1.344 djm 2111: if (!arg || *arg == '\0') {
2112: error("%.200s line %d: Missing argument.",
1.299 djm 2113: filename, linenum);
1.356 djm 2114: goto out;
1.344 djm 2115: }
1.319 djm 2116: parse_agent_path:
1.299 djm 2117: /* Extra validation if the string represents an env var. */
1.344 djm 2118: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2119: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2120: "%s.", filename, linenum, arg);
1.356 djm 2121: goto out;
1.344 djm 2122: }
1.331 dtucker 2123: free(arg2);
2124: /* check for legacy environment format */
1.344 djm 2125: if (arg[0] == '$' && arg[1] != '{' &&
2126: !valid_env_name(arg + 1)) {
2127: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2128: filename, linenum, arg);
1.356 djm 2129: goto out;
1.299 djm 2130: }
2131: if (*activep && *charptr == NULL)
2132: *charptr = xstrdup(arg);
2133: break;
1.253 markus 2134:
1.96 markus 2135: case oDeprecated:
1.98 markus 2136: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2137: filename, linenum, keyword);
1.356 djm 2138: argv_consume(&ac);
2139: break;
1.96 markus 2140:
1.110 jakob 2141: case oUnsupported:
2142: error("%s line %d: Unsupported option \"%s\"",
2143: filename, linenum, keyword);
1.356 djm 2144: argv_consume(&ac);
2145: break;
1.110 jakob 2146:
1.17 markus 2147: default:
1.344 djm 2148: error("%s line %d: Unimplemented opcode %d",
2149: filename, linenum, opcode);
1.356 djm 2150: goto out;
1.17 markus 2151: }
2152:
2153: /* Check that there is no garbage at end of line. */
1.356 djm 2154: if (ac > 0) {
2155: error("%.200s line %d: keyword %s extra arguments "
2156: "at end of line", filename, linenum, keyword);
2157: goto out;
1.39 ho 2158: }
1.356 djm 2159:
2160: /* success */
2161: ret = 0;
2162: out:
2163: argv_free(oav, oac);
2164: return ret;
1.1 deraadt 2165: }
2166:
1.19 markus 2167: /*
2168: * Reads the config file and modifies the options accordingly. Options
2169: * should already be initialized before this call. This never returns if
1.89 stevesk 2170: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2171: */
1.89 stevesk 2172: int
1.206 djm 2173: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2174: const char *original_host, Options *options, int flags,
2175: int *want_final_pass)
1.1 deraadt 2176: {
1.252 djm 2177: int active = 1;
2178:
2179: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2180: options, flags, &active, want_final_pass, 0);
1.252 djm 2181: }
2182:
2183: #define READCONF_MAX_DEPTH 16
2184: static int
2185: read_config_file_depth(const char *filename, struct passwd *pw,
2186: const char *host, const char *original_host, Options *options,
1.302 djm 2187: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2188: {
1.17 markus 2189: FILE *f;
1.356 djm 2190: char *line = NULL;
1.289 markus 2191: size_t linesize = 0;
1.252 djm 2192: int linenum;
1.17 markus 2193: int bad_options = 0;
2194:
1.252 djm 2195: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2196: fatal("Too many recursive configuration includes");
2197:
1.129 djm 2198: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2199: return 0;
1.129 djm 2200:
1.196 dtucker 2201: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2202: struct stat sb;
1.134 deraadt 2203:
1.131 dtucker 2204: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2205: fatal("fstat %s: %s", filename, strerror(errno));
2206: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2207: (sb.st_mode & 022) != 0))
1.129 djm 2208: fatal("Bad owner or permissions on %s", filename);
2209: }
1.17 markus 2210:
2211: debug("Reading configuration data %.200s", filename);
2212:
1.19 markus 2213: /*
2214: * Mark that we are now processing the options. This flag is turned
2215: * on/off by Host specifications.
2216: */
1.17 markus 2217: linenum = 0;
1.289 markus 2218: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2219: /* Update line number counter. */
2220: linenum++;
1.343 dtucker 2221: /*
2222: * Trim out comments and strip whitespace.
2223: * NB - preserve newlines, they are needed to reproduce
2224: * line numbers later for error messages.
2225: */
1.252 djm 2226: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2227: line, filename, linenum, activep, flags, want_final_pass,
2228: depth) != 0)
1.17 markus 2229: bad_options++;
2230: }
1.289 markus 2231: free(line);
1.17 markus 2232: fclose(f);
2233: if (bad_options > 0)
1.64 millert 2234: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2235: filename, bad_options);
1.89 stevesk 2236: return 1;
1.1 deraadt 2237: }
2238:
1.218 djm 2239: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2240: int
2241: option_clear_or_none(const char *o)
2242: {
2243: return o == NULL || strcasecmp(o, "none") == 0;
2244: }
2245:
1.19 markus 2246: /*
2247: * Initializes options to special values that indicate that they have not yet
2248: * been set. Read_config_file will only set options with this value. Options
2249: * are processed in the following order: command line, user config file,
2250: * system config file. Last, fill_default_options is called.
2251: */
1.1 deraadt 2252:
1.26 markus 2253: void
1.17 markus 2254: initialize_options(Options * options)
1.1 deraadt 2255: {
1.17 markus 2256: memset(options, 'X', sizeof(*options));
2257: options->forward_agent = -1;
1.319 djm 2258: options->forward_agent_sock_path = NULL;
1.17 markus 2259: options->forward_x11 = -1;
1.123 markus 2260: options->forward_x11_trusted = -1;
1.186 djm 2261: options->forward_x11_timeout = -1;
1.255 dtucker 2262: options->stdio_forward_host = NULL;
2263: options->stdio_forward_port = 0;
1.256 dtucker 2264: options->clear_forwardings = -1;
1.153 markus 2265: options->exit_on_forward_failure = -1;
1.34 markus 2266: options->xauth_location = NULL;
1.220 millert 2267: options->fwd_opts.gateway_ports = -1;
2268: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2269: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2270: options->pubkey_authentication = -1;
1.118 markus 2271: options->gss_authentication = -1;
2272: options->gss_deleg_creds = -1;
1.17 markus 2273: options->password_authentication = -1;
1.48 markus 2274: options->kbd_interactive_authentication = -1;
2275: options->kbd_interactive_devices = NULL;
1.72 markus 2276: options->hostbased_authentication = -1;
1.17 markus 2277: options->batch_mode = -1;
2278: options->check_host_ip = -1;
2279: options->strict_host_key_checking = -1;
2280: options->compression = -1;
1.126 markus 2281: options->tcp_keep_alive = -1;
1.17 markus 2282: options->port = -1;
1.114 djm 2283: options->address_family = -1;
1.17 markus 2284: options->connection_attempts = -1;
1.111 djm 2285: options->connection_timeout = -1;
1.17 markus 2286: options->number_of_password_prompts = -1;
1.25 markus 2287: options->ciphers = NULL;
1.62 markus 2288: options->macs = NULL;
1.189 djm 2289: options->kex_algorithms = NULL;
1.76 markus 2290: options->hostkeyalgorithms = NULL;
1.298 djm 2291: options->ca_sign_algorithms = NULL;
1.17 markus 2292: options->num_identity_files = 0;
1.344 djm 2293: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2294: options->num_certificate_files = 0;
1.344 djm 2295: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2296: options->hostname = NULL;
1.52 markus 2297: options->host_key_alias = NULL;
1.17 markus 2298: options->proxy_command = NULL;
1.257 djm 2299: options->jump_user = NULL;
2300: options->jump_host = NULL;
2301: options->jump_port = -1;
2302: options->jump_extra = NULL;
1.17 markus 2303: options->user = NULL;
2304: options->escape_char = -1;
1.193 djm 2305: options->num_system_hostfiles = 0;
2306: options->num_user_hostfiles = 0;
1.185 djm 2307: options->local_forwards = NULL;
1.17 markus 2308: options->num_local_forwards = 0;
1.185 djm 2309: options->remote_forwards = NULL;
1.17 markus 2310: options->num_remote_forwards = 0;
1.351 markus 2311: options->permitted_remote_opens = NULL;
2312: options->num_permitted_remote_opens = 0;
1.271 dtucker 2313: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2314: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2315: options->num_log_verbose = 0;
2316: options->log_verbose = NULL;
1.67 markus 2317: options->preferred_authentications = NULL;
1.77 markus 2318: options->bind_address = NULL;
1.282 djm 2319: options->bind_interface = NULL;
1.183 markus 2320: options->pkcs11_provider = NULL;
1.310 djm 2321: options->sk_provider = NULL;
1.101 markus 2322: options->enable_ssh_keysign = - 1;
1.91 markus 2323: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2324: options->identities_only = - 1;
1.105 markus 2325: options->rekey_limit = - 1;
1.198 dtucker 2326: options->rekey_interval = -1;
1.107 jakob 2327: options->verify_host_key_dns = -1;
1.127 markus 2328: options->server_alive_interval = -1;
2329: options->server_alive_count_max = -1;
1.290 djm 2330: options->send_env = NULL;
1.130 djm 2331: options->num_send_env = 0;
1.290 djm 2332: options->setenv = NULL;
2333: options->num_setenv = 0;
1.132 djm 2334: options->control_path = NULL;
2335: options->control_master = -1;
1.187 djm 2336: options->control_persist = -1;
2337: options->control_persist_timeout = 0;
1.136 djm 2338: options->hash_known_hosts = -1;
1.144 reyk 2339: options->tun_open = -1;
2340: options->tun_local = -1;
2341: options->tun_remote = -1;
2342: options->local_command = NULL;
2343: options->permit_local_command = -1;
1.277 bluhm 2344: options->remote_command = NULL;
1.246 jcs 2345: options->add_keys_to_agent = -1;
1.334 djm 2346: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2347: options->identity_agent = NULL;
1.167 grunk 2348: options->visual_host_key = -1;
1.190 djm 2349: options->ip_qos_interactive = -1;
2350: options->ip_qos_bulk = -1;
1.192 djm 2351: options->request_tty = -1;
1.205 djm 2352: options->proxy_use_fdpass = -1;
1.199 djm 2353: options->ignored_unknown = NULL;
1.208 djm 2354: options->num_canonical_domains = 0;
2355: options->num_permitted_cnames = 0;
1.209 djm 2356: options->canonicalize_max_dots = -1;
2357: options->canonicalize_fallback_local = -1;
2358: options->canonicalize_hostname = -1;
1.223 djm 2359: options->revoked_host_keys = NULL;
1.224 djm 2360: options->fingerprint_hash = -1;
1.229 djm 2361: options->update_hostkeys = -1;
1.350 dtucker 2362: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2363: options->pubkey_accepted_algos = NULL;
1.346 djm 2364: options->known_hosts_command = NULL;
1.1 deraadt 2365: }
2366:
1.19 markus 2367: /*
1.218 djm 2368: * A petite version of fill_default_options() that just fills the options
2369: * needed for hostname canonicalization to proceed.
2370: */
2371: void
2372: fill_default_options_for_canonicalization(Options *options)
2373: {
2374: if (options->canonicalize_max_dots == -1)
2375: options->canonicalize_max_dots = 1;
2376: if (options->canonicalize_fallback_local == -1)
2377: options->canonicalize_fallback_local = 1;
2378: if (options->canonicalize_hostname == -1)
2379: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2380: }
2381:
2382: /*
1.19 markus 2383: * Called after processing other sources of option data, this fills those
2384: * options for which no value has been specified with their default values.
2385: */
1.344 djm 2386: int
1.17 markus 2387: fill_default_options(Options * options)
1.1 deraadt 2388: {
1.298 djm 2389: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2390: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2391: int ret = 0, r;
1.292 djm 2392:
1.17 markus 2393: if (options->forward_agent == -1)
1.33 markus 2394: options->forward_agent = 0;
1.17 markus 2395: if (options->forward_x11 == -1)
1.23 markus 2396: options->forward_x11 = 0;
1.123 markus 2397: if (options->forward_x11_trusted == -1)
2398: options->forward_x11_trusted = 0;
1.186 djm 2399: if (options->forward_x11_timeout == -1)
2400: options->forward_x11_timeout = 1200;
1.256 dtucker 2401: /*
2402: * stdio forwarding (-W) changes the default for these but we defer
2403: * setting the values so they can be overridden.
2404: */
1.153 markus 2405: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2406: options->exit_on_forward_failure =
2407: options->stdio_forward_host != NULL ? 1 : 0;
2408: if (options->clear_forwardings == -1)
2409: options->clear_forwardings =
2410: options->stdio_forward_host != NULL ? 1 : 0;
2411: if (options->clear_forwardings == 1)
2412: clear_forwardings(options);
2413:
1.34 markus 2414: if (options->xauth_location == NULL)
1.344 djm 2415: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2416: if (options->fwd_opts.gateway_ports == -1)
2417: options->fwd_opts.gateway_ports = 0;
2418: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2419: options->fwd_opts.streamlocal_bind_mask = 0177;
2420: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2421: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2422: if (options->pubkey_authentication == -1)
2423: options->pubkey_authentication = 1;
1.118 markus 2424: if (options->gss_authentication == -1)
1.122 markus 2425: options->gss_authentication = 0;
1.118 markus 2426: if (options->gss_deleg_creds == -1)
2427: options->gss_deleg_creds = 0;
1.17 markus 2428: if (options->password_authentication == -1)
2429: options->password_authentication = 1;
1.48 markus 2430: if (options->kbd_interactive_authentication == -1)
1.59 markus 2431: options->kbd_interactive_authentication = 1;
1.72 markus 2432: if (options->hostbased_authentication == -1)
2433: options->hostbased_authentication = 0;
1.17 markus 2434: if (options->batch_mode == -1)
2435: options->batch_mode = 0;
2436: if (options->check_host_ip == -1)
1.348 djm 2437: options->check_host_ip = 0;
1.17 markus 2438: if (options->strict_host_key_checking == -1)
1.278 djm 2439: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2440: if (options->compression == -1)
2441: options->compression = 0;
1.126 markus 2442: if (options->tcp_keep_alive == -1)
2443: options->tcp_keep_alive = 1;
1.17 markus 2444: if (options->port == -1)
2445: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2446: if (options->address_family == -1)
2447: options->address_family = AF_UNSPEC;
1.17 markus 2448: if (options->connection_attempts == -1)
1.84 markus 2449: options->connection_attempts = 1;
1.17 markus 2450: if (options->number_of_password_prompts == -1)
2451: options->number_of_password_prompts = 3;
1.76 markus 2452: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2453: if (options->add_keys_to_agent == -1) {
1.246 jcs 2454: options->add_keys_to_agent = 0;
1.334 djm 2455: options->add_keys_to_agent_lifespan = 0;
2456: }
1.17 markus 2457: if (options->num_identity_files == 0) {
1.273 djm 2458: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2459: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2460: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2461: add_identity_file(options, "~/",
1.310 djm 2462: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2463: add_identity_file(options, "~/",
1.273 djm 2464: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2465: add_identity_file(options, "~/",
2466: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2467: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2468: }
1.17 markus 2469: if (options->escape_char == -1)
2470: options->escape_char = '~';
1.193 djm 2471: if (options->num_system_hostfiles == 0) {
2472: options->system_hostfiles[options->num_system_hostfiles++] =
2473: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2474: options->system_hostfiles[options->num_system_hostfiles++] =
2475: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2476: }
1.336 djm 2477: if (options->update_hostkeys == -1) {
1.338 djm 2478: if (options->verify_host_key_dns <= 0 &&
2479: (options->num_user_hostfiles == 0 ||
1.336 djm 2480: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2481: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2482: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2483: else
1.325 djm 2484: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2485: }
1.193 djm 2486: if (options->num_user_hostfiles == 0) {
2487: options->user_hostfiles[options->num_user_hostfiles++] =
2488: xstrdup(_PATH_SSH_USER_HOSTFILE);
2489: options->user_hostfiles[options->num_user_hostfiles++] =
2490: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2491: }
1.95 markus 2492: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2493: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2494: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2495: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2496: if (options->no_host_authentication_for_localhost == - 1)
2497: options->no_host_authentication_for_localhost = 0;
1.128 markus 2498: if (options->identities_only == -1)
2499: options->identities_only = 0;
1.101 markus 2500: if (options->enable_ssh_keysign == -1)
2501: options->enable_ssh_keysign = 0;
1.105 markus 2502: if (options->rekey_limit == -1)
2503: options->rekey_limit = 0;
1.198 dtucker 2504: if (options->rekey_interval == -1)
2505: options->rekey_interval = 0;
1.107 jakob 2506: if (options->verify_host_key_dns == -1)
2507: options->verify_host_key_dns = 0;
1.127 markus 2508: if (options->server_alive_interval == -1)
2509: options->server_alive_interval = 0;
2510: if (options->server_alive_count_max == -1)
2511: options->server_alive_count_max = 3;
1.132 djm 2512: if (options->control_master == -1)
2513: options->control_master = 0;
1.187 djm 2514: if (options->control_persist == -1) {
2515: options->control_persist = 0;
2516: options->control_persist_timeout = 0;
2517: }
1.136 djm 2518: if (options->hash_known_hosts == -1)
2519: options->hash_known_hosts = 0;
1.144 reyk 2520: if (options->tun_open == -1)
1.145 reyk 2521: options->tun_open = SSH_TUNMODE_NO;
2522: if (options->tun_local == -1)
2523: options->tun_local = SSH_TUNID_ANY;
2524: if (options->tun_remote == -1)
2525: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2526: if (options->permit_local_command == -1)
2527: options->permit_local_command = 0;
1.167 grunk 2528: if (options->visual_host_key == -1)
2529: options->visual_host_key = 0;
1.190 djm 2530: if (options->ip_qos_interactive == -1)
1.284 job 2531: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2532: if (options->ip_qos_bulk == -1)
1.284 job 2533: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2534: if (options->request_tty == -1)
2535: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2536: if (options->proxy_use_fdpass == -1)
2537: options->proxy_use_fdpass = 0;
1.209 djm 2538: if (options->canonicalize_max_dots == -1)
2539: options->canonicalize_max_dots = 1;
2540: if (options->canonicalize_fallback_local == -1)
2541: options->canonicalize_fallback_local = 1;
2542: if (options->canonicalize_hostname == -1)
2543: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2544: if (options->fingerprint_hash == -1)
2545: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2546: if (options->sk_provider == NULL)
1.314 djm 2547: options->sk_provider = xstrdup("internal");
1.292 djm 2548:
2549: /* Expand KEX name lists */
2550: all_cipher = cipher_alg_list(',', 0);
2551: all_mac = mac_alg_list(',');
2552: all_kex = kex_alg_list(',');
2553: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2554: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2555: /* remove unsupported algos from default lists */
1.332 djm 2556: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2557: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2558: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2559: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2560: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2561: #define ASSEMBLE(what, defaults, all) \
2562: do { \
2563: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2564: defaults, all)) != 0) { \
2565: error_fr(r, "%s", #what); \
2566: goto fail; \
2567: } \
1.297 djm 2568: } while (0)
1.320 dtucker 2569: ASSEMBLE(ciphers, def_cipher, all_cipher);
2570: ASSEMBLE(macs, def_mac, all_mac);
2571: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2572: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2573: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2574: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2575: #undef ASSEMBLE
1.224 djm 2576:
1.207 djm 2577: #define CLEAR_ON_NONE(v) \
2578: do { \
1.218 djm 2579: if (option_clear_or_none(v)) { \
1.207 djm 2580: free(v); \
2581: v = NULL; \
2582: } \
2583: } while(0)
2584: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2585: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2586: CLEAR_ON_NONE(options->proxy_command);
2587: CLEAR_ON_NONE(options->control_path);
1.223 djm 2588: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2589: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2590: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2591: CLEAR_ON_NONE(options->known_hosts_command);
1.287 djm 2592: if (options->jump_host != NULL &&
2593: strcmp(options->jump_host, "none") == 0 &&
2594: options->jump_port == 0 && options->jump_user == NULL) {
2595: free(options->jump_host);
2596: options->jump_host = NULL;
2597: }
1.254 markus 2598: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2599: /* options->user will be set in the main program if appropriate */
2600: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2601: /* options->host_key_alias should not be set by default */
1.67 markus 2602: /* options->preferred_authentications will be set in ssh */
1.344 djm 2603:
2604: /* success */
2605: ret = 0;
2606: fail:
2607: free(all_cipher);
2608: free(all_mac);
2609: free(all_kex);
2610: free(all_key);
2611: free(all_sig);
2612: free(def_cipher);
2613: free(def_mac);
2614: free(def_kex);
2615: free(def_key);
2616: free(def_sig);
2617: return ret;
2618: }
2619:
2620: void
2621: free_options(Options *o)
2622: {
2623: int i;
2624:
2625: if (o == NULL)
2626: return;
2627:
2628: #define FREE_ARRAY(type, n, a) \
2629: do { \
2630: type _i; \
2631: for (_i = 0; _i < (n); _i++) \
2632: free((a)[_i]); \
2633: } while (0)
2634:
2635: free(o->forward_agent_sock_path);
2636: free(o->xauth_location);
2637: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2638: free(o->log_verbose);
2639: free(o->ciphers);
2640: free(o->macs);
2641: free(o->hostkeyalgorithms);
2642: free(o->kex_algorithms);
2643: free(o->ca_sign_algorithms);
2644: free(o->hostname);
2645: free(o->host_key_alias);
2646: free(o->proxy_command);
2647: free(o->user);
2648: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2649: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2650: free(o->preferred_authentications);
2651: free(o->bind_address);
2652: free(o->bind_interface);
2653: free(o->pkcs11_provider);
2654: free(o->sk_provider);
2655: for (i = 0; i < o->num_identity_files; i++) {
2656: free(o->identity_files[i]);
2657: sshkey_free(o->identity_keys[i]);
2658: }
2659: for (i = 0; i < o->num_certificate_files; i++) {
2660: free(o->certificate_files[i]);
2661: sshkey_free(o->certificates[i]);
2662: }
2663: free(o->identity_agent);
2664: for (i = 0; i < o->num_local_forwards; i++) {
2665: free(o->local_forwards[i].listen_host);
2666: free(o->local_forwards[i].listen_path);
2667: free(o->local_forwards[i].connect_host);
2668: free(o->local_forwards[i].connect_path);
2669: }
2670: free(o->local_forwards);
2671: for (i = 0; i < o->num_remote_forwards; i++) {
2672: free(o->remote_forwards[i].listen_host);
2673: free(o->remote_forwards[i].listen_path);
2674: free(o->remote_forwards[i].connect_host);
2675: free(o->remote_forwards[i].connect_path);
2676: }
2677: free(o->remote_forwards);
2678: free(o->stdio_forward_host);
2679: FREE_ARRAY(int, o->num_send_env, o->send_env);
2680: free(o->send_env);
2681: FREE_ARRAY(int, o->num_setenv, o->setenv);
2682: free(o->setenv);
2683: free(o->control_path);
2684: free(o->local_command);
2685: free(o->remote_command);
2686: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2687: for (i = 0; i < o->num_permitted_cnames; i++) {
2688: free(o->permitted_cnames[i].source_list);
2689: free(o->permitted_cnames[i].target_list);
2690: }
2691: free(o->revoked_host_keys);
1.350 dtucker 2692: free(o->hostbased_accepted_algos);
1.349 dtucker 2693: free(o->pubkey_accepted_algos);
1.344 djm 2694: free(o->jump_user);
2695: free(o->jump_host);
2696: free(o->jump_extra);
2697: free(o->ignored_unknown);
2698: explicit_bzero(o, sizeof(*o));
2699: #undef FREE_ARRAY
1.135 djm 2700: }
2701:
1.220 millert 2702: struct fwdarg {
2703: char *arg;
2704: int ispath;
2705: };
2706:
2707: /*
2708: * parse_fwd_field
2709: * parses the next field in a port forwarding specification.
2710: * sets fwd to the parsed field and advances p past the colon
2711: * or sets it to NULL at end of string.
2712: * returns 0 on success, else non-zero.
2713: */
2714: static int
2715: parse_fwd_field(char **p, struct fwdarg *fwd)
2716: {
2717: char *ep, *cp = *p;
2718: int ispath = 0;
2719:
2720: if (*cp == '\0') {
2721: *p = NULL;
2722: return -1; /* end of string */
2723: }
2724:
2725: /*
2726: * A field escaped with square brackets is used literally.
2727: * XXX - allow ']' to be escaped via backslash?
2728: */
2729: if (*cp == '[') {
2730: /* find matching ']' */
2731: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2732: if (*ep == '/')
2733: ispath = 1;
2734: }
2735: /* no matching ']' or not at end of field. */
2736: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2737: return -1;
2738: /* NUL terminate the field and advance p past the colon */
2739: *ep++ = '\0';
2740: if (*ep != '\0')
2741: *ep++ = '\0';
2742: fwd->arg = cp + 1;
2743: fwd->ispath = ispath;
2744: *p = ep;
2745: return 0;
2746: }
2747:
2748: for (cp = *p; *cp != '\0'; cp++) {
2749: switch (*cp) {
2750: case '\\':
2751: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2752: if (*cp == '\0')
2753: return -1;
1.220 millert 2754: break;
2755: case '/':
2756: ispath = 1;
2757: break;
2758: case ':':
2759: *cp++ = '\0';
2760: goto done;
2761: }
2762: }
2763: done:
2764: fwd->arg = *p;
2765: fwd->ispath = ispath;
2766: *p = cp;
2767: return 0;
2768: }
2769:
1.135 djm 2770: /*
2771: * parse_forward
2772: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2773: * dynamicfwd == 0
1.220 millert 2774: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2775: * listenpath:connectpath
1.168 stevesk 2776: * dynamicfwd == 1
2777: * [listenhost:]listenport
1.135 djm 2778: * returns number of arguments parsed or zero on error
2779: */
2780: int
1.220 millert 2781: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2782: {
1.220 millert 2783: struct fwdarg fwdargs[4];
2784: char *p, *cp;
1.331 dtucker 2785: int i, err;
1.135 djm 2786:
1.220 millert 2787: memset(fwd, 0, sizeof(*fwd));
2788: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2789:
1.331 dtucker 2790: /*
2791: * We expand environment variables before checking if we think they're
2792: * paths so that if ${VAR} expands to a fully qualified path it is
2793: * treated as a path.
2794: */
2795: cp = p = dollar_expand(&err, fwdspec);
2796: if (p == NULL || err)
2797: return 0;
1.135 djm 2798:
2799: /* skip leading spaces */
1.214 deraadt 2800: while (isspace((u_char)*cp))
1.135 djm 2801: cp++;
2802:
1.220 millert 2803: for (i = 0; i < 4; ++i) {
2804: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2805: break;
1.220 millert 2806: }
1.135 djm 2807:
1.170 stevesk 2808: /* Check for trailing garbage */
1.220 millert 2809: if (cp != NULL && *cp != '\0') {
1.135 djm 2810: i = 0; /* failure */
1.220 millert 2811: }
1.135 djm 2812:
2813: switch (i) {
1.168 stevesk 2814: case 1:
1.220 millert 2815: if (fwdargs[0].ispath) {
2816: fwd->listen_path = xstrdup(fwdargs[0].arg);
2817: fwd->listen_port = PORT_STREAMLOCAL;
2818: } else {
2819: fwd->listen_host = NULL;
2820: fwd->listen_port = a2port(fwdargs[0].arg);
2821: }
1.168 stevesk 2822: fwd->connect_host = xstrdup("socks");
2823: break;
2824:
2825: case 2:
1.220 millert 2826: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2827: fwd->listen_path = xstrdup(fwdargs[0].arg);
2828: fwd->listen_port = PORT_STREAMLOCAL;
2829: fwd->connect_path = xstrdup(fwdargs[1].arg);
2830: fwd->connect_port = PORT_STREAMLOCAL;
2831: } else if (fwdargs[1].ispath) {
2832: fwd->listen_host = NULL;
2833: fwd->listen_port = a2port(fwdargs[0].arg);
2834: fwd->connect_path = xstrdup(fwdargs[1].arg);
2835: fwd->connect_port = PORT_STREAMLOCAL;
2836: } else {
2837: fwd->listen_host = xstrdup(fwdargs[0].arg);
2838: fwd->listen_port = a2port(fwdargs[1].arg);
2839: fwd->connect_host = xstrdup("socks");
2840: }
1.168 stevesk 2841: break;
2842:
1.135 djm 2843: case 3:
1.220 millert 2844: if (fwdargs[0].ispath) {
2845: fwd->listen_path = xstrdup(fwdargs[0].arg);
2846: fwd->listen_port = PORT_STREAMLOCAL;
2847: fwd->connect_host = xstrdup(fwdargs[1].arg);
2848: fwd->connect_port = a2port(fwdargs[2].arg);
2849: } else if (fwdargs[2].ispath) {
2850: fwd->listen_host = xstrdup(fwdargs[0].arg);
2851: fwd->listen_port = a2port(fwdargs[1].arg);
2852: fwd->connect_path = xstrdup(fwdargs[2].arg);
2853: fwd->connect_port = PORT_STREAMLOCAL;
2854: } else {
2855: fwd->listen_host = NULL;
2856: fwd->listen_port = a2port(fwdargs[0].arg);
2857: fwd->connect_host = xstrdup(fwdargs[1].arg);
2858: fwd->connect_port = a2port(fwdargs[2].arg);
2859: }
1.135 djm 2860: break;
2861:
2862: case 4:
1.220 millert 2863: fwd->listen_host = xstrdup(fwdargs[0].arg);
2864: fwd->listen_port = a2port(fwdargs[1].arg);
2865: fwd->connect_host = xstrdup(fwdargs[2].arg);
2866: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2867: break;
2868: default:
2869: i = 0; /* failure */
2870: }
2871:
1.202 djm 2872: free(p);
1.135 djm 2873:
1.168 stevesk 2874: if (dynamicfwd) {
2875: if (!(i == 1 || i == 2))
2876: goto fail_free;
2877: } else {
1.220 millert 2878: if (!(i == 3 || i == 4)) {
2879: if (fwd->connect_path == NULL &&
2880: fwd->listen_path == NULL)
2881: goto fail_free;
2882: }
2883: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2884: goto fail_free;
2885: }
2886:
1.220 millert 2887: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2888: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2889: goto fail_free;
2890: if (fwd->connect_host != NULL &&
2891: strlen(fwd->connect_host) >= NI_MAXHOST)
2892: goto fail_free;
1.356 djm 2893: /*
2894: * XXX - if connecting to a remote socket, max sun len may not
2895: * match this host
2896: */
1.220 millert 2897: if (fwd->connect_path != NULL &&
2898: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2899: goto fail_free;
1.176 djm 2900: if (fwd->listen_host != NULL &&
2901: strlen(fwd->listen_host) >= NI_MAXHOST)
2902: goto fail_free;
1.220 millert 2903: if (fwd->listen_path != NULL &&
2904: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2905: goto fail_free;
1.135 djm 2906:
2907: return (i);
2908:
2909: fail_free:
1.202 djm 2910: free(fwd->connect_host);
2911: fwd->connect_host = NULL;
1.220 millert 2912: free(fwd->connect_path);
2913: fwd->connect_path = NULL;
1.202 djm 2914: free(fwd->listen_host);
2915: fwd->listen_host = NULL;
1.220 millert 2916: free(fwd->listen_path);
2917: fwd->listen_path = NULL;
1.135 djm 2918: return (0);
1.221 djm 2919: }
2920:
1.257 djm 2921: int
2922: parse_jump(const char *s, Options *o, int active)
2923: {
2924: char *orig, *sdup, *cp;
2925: char *host = NULL, *user = NULL;
1.345 djm 2926: int r, ret = -1, port = -1, first;
1.257 djm 2927:
2928: active &= o->proxy_command == NULL && o->jump_host == NULL;
2929:
2930: orig = sdup = xstrdup(s);
1.356 djm 2931:
2932: /* Remove comment and trailing whitespace */
2933: if ((cp = strchr(orig, '#')) != NULL)
2934: *cp = '\0';
2935: rtrim(orig);
2936:
1.258 naddy 2937: first = active;
1.259 djm 2938: do {
1.287 djm 2939: if (strcasecmp(s, "none") == 0)
2940: break;
1.259 djm 2941: if ((cp = strrchr(sdup, ',')) == NULL)
2942: cp = sdup; /* last */
2943: else
2944: *cp++ = '\0';
2945:
1.258 naddy 2946: if (first) {
1.257 djm 2947: /* First argument and configuration is active */
1.345 djm 2948: r = parse_ssh_uri(cp, &user, &host, &port);
2949: if (r == -1 || (r == 1 &&
2950: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 2951: goto out;
2952: } else {
2953: /* Subsequent argument or inactive configuration */
1.345 djm 2954: r = parse_ssh_uri(cp, NULL, NULL, NULL);
2955: if (r == -1 || (r == 1 &&
2956: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 2957: goto out;
2958: }
1.258 naddy 2959: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2960: } while (cp != sdup);
1.257 djm 2961: /* success */
1.258 naddy 2962: if (active) {
1.287 djm 2963: if (strcasecmp(s, "none") == 0) {
2964: o->jump_host = xstrdup("none");
2965: o->jump_port = 0;
2966: } else {
2967: o->jump_user = user;
2968: o->jump_host = host;
2969: o->jump_port = port;
2970: o->proxy_command = xstrdup("none");
2971: user = host = NULL;
2972: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2973: o->jump_extra = xstrdup(s);
2974: o->jump_extra[cp - s] = '\0';
2975: }
1.259 djm 2976: }
1.258 naddy 2977: }
1.257 djm 2978: ret = 0;
2979: out:
1.258 naddy 2980: free(orig);
1.257 djm 2981: free(user);
2982: free(host);
2983: return ret;
1.280 millert 2984: }
2985:
2986: int
2987: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2988: {
1.344 djm 2989: char *user = NULL, *host = NULL, *path = NULL;
2990: int r, port;
1.280 millert 2991:
1.344 djm 2992: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 2993: if (r == 0 && path != NULL)
2994: r = -1; /* path not allowed */
1.344 djm 2995: if (r == 0) {
2996: if (userp != NULL) {
2997: *userp = user;
2998: user = NULL;
2999: }
3000: if (hostp != NULL) {
3001: *hostp = host;
3002: host = NULL;
3003: }
3004: if (portp != NULL)
3005: *portp = port;
3006: }
3007: free(user);
3008: free(host);
3009: free(path);
1.280 millert 3010: return r;
1.257 djm 3011: }
3012:
1.221 djm 3013: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3014: static const char *
3015: fmt_multistate_int(int val, const struct multistate *m)
3016: {
3017: u_int i;
3018:
3019: for (i = 0; m[i].key != NULL; i++) {
3020: if (m[i].value == val)
3021: return m[i].key;
3022: }
3023: return "UNKNOWN";
3024: }
3025:
3026: static const char *
3027: fmt_intarg(OpCodes code, int val)
3028: {
3029: if (val == -1)
3030: return "unset";
3031: switch (code) {
3032: case oAddressFamily:
3033: return fmt_multistate_int(val, multistate_addressfamily);
3034: case oVerifyHostKeyDNS:
1.232 djm 3035: case oUpdateHostkeys:
1.221 djm 3036: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3037: case oStrictHostKeyChecking:
3038: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3039: case oControlMaster:
3040: return fmt_multistate_int(val, multistate_controlmaster);
3041: case oTunnel:
3042: return fmt_multistate_int(val, multistate_tunnel);
3043: case oRequestTTY:
3044: return fmt_multistate_int(val, multistate_requesttty);
3045: case oCanonicalizeHostname:
3046: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3047: case oAddKeysToAgent:
3048: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 3049: case oFingerprintHash:
3050: return ssh_digest_alg_name(val);
1.221 djm 3051: default:
3052: switch (val) {
3053: case 0:
3054: return "no";
3055: case 1:
3056: return "yes";
3057: default:
3058: return "UNKNOWN";
3059: }
3060: }
3061: }
3062:
3063: static const char *
3064: lookup_opcode_name(OpCodes code)
3065: {
3066: u_int i;
3067:
3068: for (i = 0; keywords[i].name != NULL; i++)
3069: if (keywords[i].opcode == code)
3070: return(keywords[i].name);
3071: return "UNKNOWN";
3072: }
3073:
3074: static void
3075: dump_cfg_int(OpCodes code, int val)
3076: {
3077: printf("%s %d\n", lookup_opcode_name(code), val);
3078: }
3079:
3080: static void
3081: dump_cfg_fmtint(OpCodes code, int val)
3082: {
3083: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3084: }
3085:
3086: static void
3087: dump_cfg_string(OpCodes code, const char *val)
3088: {
3089: if (val == NULL)
3090: return;
3091: printf("%s %s\n", lookup_opcode_name(code), val);
3092: }
3093:
3094: static void
3095: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3096: {
3097: u_int i;
3098:
3099: for (i = 0; i < count; i++)
3100: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3101: }
3102:
3103: static void
3104: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3105: {
3106: u_int i;
3107:
3108: printf("%s", lookup_opcode_name(code));
1.356 djm 3109: if (count == 0)
3110: printf(" none");
1.221 djm 3111: for (i = 0; i < count; i++)
3112: printf(" %s", vals[i]);
3113: printf("\n");
3114: }
3115:
3116: static void
3117: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3118: {
3119: const struct Forward *fwd;
3120: u_int i;
3121:
3122: /* oDynamicForward */
3123: for (i = 0; i < count; i++) {
3124: fwd = &fwds[i];
1.265 djm 3125: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3126: strcmp(fwd->connect_host, "socks") != 0)
3127: continue;
1.265 djm 3128: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3129: strcmp(fwd->connect_host, "socks") == 0)
3130: continue;
3131: printf("%s", lookup_opcode_name(code));
3132: if (fwd->listen_port == PORT_STREAMLOCAL)
3133: printf(" %s", fwd->listen_path);
3134: else if (fwd->listen_host == NULL)
3135: printf(" %d", fwd->listen_port);
3136: else {
3137: printf(" [%s]:%d",
3138: fwd->listen_host, fwd->listen_port);
3139: }
3140: if (code != oDynamicForward) {
3141: if (fwd->connect_port == PORT_STREAMLOCAL)
3142: printf(" %s", fwd->connect_path);
3143: else if (fwd->connect_host == NULL)
3144: printf(" %d", fwd->connect_port);
3145: else {
3146: printf(" [%s]:%d",
3147: fwd->connect_host, fwd->connect_port);
3148: }
3149: }
3150: printf("\n");
3151: }
3152: }
3153:
3154: void
3155: dump_client_config(Options *o, const char *host)
3156: {
1.326 djm 3157: int i, r;
3158: char buf[8], *all_key;
3159:
3160: /*
3161: * Expand HostKeyAlgorithms name lists. This isn't handled in
3162: * fill_default_options() like the other algorithm lists because
3163: * the host key algorithms are by default dynamically chosen based
3164: * on the host's keys found in known_hosts.
3165: */
3166: all_key = sshkey_alg_list(0, 0, 1, ',');
3167: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3168: all_key)) != 0)
1.340 djm 3169: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3170: free(all_key);
1.240 djm 3171:
1.221 djm 3172: /* Most interesting options first: user, host, port */
3173: dump_cfg_string(oUser, o->user);
1.306 jmc 3174: dump_cfg_string(oHostname, host);
1.221 djm 3175: dump_cfg_int(oPort, o->port);
3176:
3177: /* Flag options */
3178: dump_cfg_fmtint(oAddressFamily, o->address_family);
3179: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3180: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3181: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3182: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3183: dump_cfg_fmtint(oCompression, o->compression);
3184: dump_cfg_fmtint(oControlMaster, o->control_master);
3185: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3186: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3187: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3188: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3189: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3190: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3191: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3192: #ifdef GSSAPI
3193: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3194: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3195: #endif /* GSSAPI */
3196: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3197: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3198: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3199: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3200: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3201: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3202: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3203: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3204: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3205: dump_cfg_fmtint(oRequestTTY, o->request_tty);
3206: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3207: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3208: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3209: dump_cfg_fmtint(oTunnel, o->tun_open);
3210: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3211: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3212: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 3213:
3214: /* Integer options */
3215: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3216: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3217: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3218: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3219: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3220: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
3221:
3222: /* String options */
3223: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3224: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3225: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3226: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3227: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3228: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3229: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3230: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3231: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3232: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3233: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3234: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3235: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3236: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3237: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3238: dump_cfg_string(oMacs, o->macs);
1.266 djm 3239: #ifdef ENABLE_PKCS11
1.221 djm 3240: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3241: #endif
1.310 djm 3242: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3243: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3244: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3245: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3246: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3247: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.221 djm 3248:
1.230 djm 3249: /* Forwards */
1.221 djm 3250: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3251: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3252: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3253:
3254: /* String array options */
3255: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3256: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3257: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3258: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3259: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3260: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3261: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3262: dump_cfg_strarray_oneline(oLogVerbose,
3263: o->num_log_verbose, o->log_verbose);
1.221 djm 3264:
3265: /* Special cases */
1.351 markus 3266:
3267: /* PermitRemoteOpen */
3268: if (o->num_permitted_remote_opens == 0)
3269: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3270: else
3271: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3272: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3273:
3274: /* AddKeysToAgent */
3275: if (o->add_keys_to_agent_lifespan <= 0)
3276: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3277: else {
3278: printf("addkeystoagent%s %d\n",
3279: o->add_keys_to_agent == 3 ? " confirm" : "",
3280: o->add_keys_to_agent_lifespan);
3281: }
1.319 djm 3282:
3283: /* oForwardAgent */
3284: if (o->forward_agent_sock_path == NULL)
3285: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3286: else
3287: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3288:
3289: /* oConnectTimeout */
3290: if (o->connection_timeout == -1)
3291: printf("connecttimeout none\n");
3292: else
3293: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3294:
3295: /* oTunnelDevice */
3296: printf("tunneldevice");
3297: if (o->tun_local == SSH_TUNID_ANY)
3298: printf(" any");
3299: else
3300: printf(" %d", o->tun_local);
3301: if (o->tun_remote == SSH_TUNID_ANY)
3302: printf(":any");
3303: else
3304: printf(":%d", o->tun_remote);
3305: printf("\n");
3306:
3307: /* oCanonicalizePermittedCNAMEs */
3308: if ( o->num_permitted_cnames > 0) {
3309: printf("canonicalizePermittedcnames");
3310: for (i = 0; i < o->num_permitted_cnames; i++) {
3311: printf(" %s:%s", o->permitted_cnames[i].source_list,
3312: o->permitted_cnames[i].target_list);
3313: }
3314: printf("\n");
3315: }
3316:
3317: /* oControlPersist */
3318: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3319: dump_cfg_fmtint(oControlPersist, o->control_persist);
3320: else
3321: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3322:
3323: /* oEscapeChar */
3324: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3325: printf("escapechar none\n");
3326: else {
1.257 djm 3327: vis(buf, o->escape_char, VIS_WHITE, 0);
3328: printf("escapechar %s\n", buf);
1.221 djm 3329: }
3330:
3331: /* oIPQoS */
3332: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3333: printf("%s\n", iptos2str(o->ip_qos_bulk));
3334:
3335: /* oRekeyLimit */
1.249 dtucker 3336: printf("rekeylimit %llu %d\n",
3337: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3338:
3339: /* oStreamLocalBindMask */
3340: printf("streamlocalbindmask 0%o\n",
3341: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3342:
3343: /* oLogFacility */
3344: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3345:
3346: /* oProxyCommand / oProxyJump */
3347: if (o->jump_host == NULL)
3348: dump_cfg_string(oProxyCommand, o->proxy_command);
3349: else {
3350: /* Check for numeric addresses */
3351: i = strchr(o->jump_host, ':') != NULL ||
3352: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3353: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3354: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3355: /* optional additional jump spec */
3356: o->jump_extra == NULL ? "" : o->jump_extra,
3357: o->jump_extra == NULL ? "" : ",",
1.257 djm 3358: /* optional user */
3359: o->jump_user == NULL ? "" : o->jump_user,
3360: o->jump_user == NULL ? "" : "@",
3361: /* opening [ if hostname is numeric */
3362: i ? "[" : "",
3363: /* mandatory hostname */
3364: o->jump_host,
3365: /* closing ] if hostname is numeric */
3366: i ? "]" : "",
3367: /* optional port number */
3368: o->jump_port <= 0 ? "" : ":",
1.259 djm 3369: o->jump_port <= 0 ? "" : buf);
1.257 djm 3370: }
1.1 deraadt 3371: }
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