Annotation of src/usr.bin/ssh/readconf.c, Revision 1.378
1.378 ! djm 1: /* $OpenBSD: readconf.c,v 1.377 2023/06/21 05:10:26 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:
1.378 ! djm 21: #include <net/if.h>
1.152 stevesk 22: #include <netinet/in.h>
1.190 djm 23: #include <netinet/ip.h>
1.148 stevesk 24:
25: #include <ctype.h>
1.154 stevesk 26: #include <errno.h>
1.206 djm 27: #include <fcntl.h>
1.252 djm 28: #include <glob.h>
1.378 ! djm 29: #include <ifaddrs.h>
1.155 stevesk 30: #include <netdb.h>
1.206 djm 31: #include <paths.h>
32: #include <pwd.h>
1.159 deraadt 33: #include <signal.h>
1.158 stevesk 34: #include <stdio.h>
1.157 stevesk 35: #include <string.h>
1.312 deraadt 36: #include <stdarg.h>
1.156 stevesk 37: #include <unistd.h>
1.228 deraadt 38: #include <limits.h>
1.200 dtucker 39: #include <util.h>
1.221 djm 40: #include <vis.h>
1.1 deraadt 41:
1.159 deraadt 42: #include "xmalloc.h"
1.1 deraadt 43: #include "ssh.h"
1.297 djm 44: #include "ssherr.h"
1.58 markus 45: #include "cipher.h"
1.55 markus 46: #include "pathnames.h"
1.58 markus 47: #include "log.h"
1.227 djm 48: #include "sshkey.h"
1.220 millert 49: #include "misc.h"
1.58 markus 50: #include "readconf.h"
51: #include "match.h"
1.62 markus 52: #include "kex.h"
53: #include "mac.h"
1.206 djm 54: #include "uidswap.h"
1.221 djm 55: #include "myproposal.h"
1.224 djm 56: #include "digest.h"
1.1 deraadt 57:
58: /* Format of the configuration file:
59:
60: # Configuration data is parsed as follows:
61: # 1. command line options
62: # 2. user-specific file
63: # 3. system-wide file
64: # Any configuration value is only changed the first time it is set.
65: # Thus, host-specific definitions should be at the beginning of the
66: # configuration file, and defaults at the end.
67:
68: # Host-specific declarations. These may override anything above. A single
69: # host may match multiple declarations; these are processed in the order
70: # that they are given in.
71:
72: Host *.ngs.fi ngs.fi
1.96 markus 73: User foo
1.1 deraadt 74:
75: Host fake.com
1.306 jmc 76: Hostname another.host.name.real.org
1.1 deraadt 77: User blaah
78: Port 34289
79: ForwardX11 no
80: ForwardAgent no
81:
82: Host books.com
83: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 84: Ciphers 3des-cbc
1.1 deraadt 85:
86: Host fascist.blob.com
87: Port 23123
88: User tylonen
89: PasswordAuthentication no
90:
91: Host puukko.hut.fi
92: User t35124p
93: ProxyCommand ssh-proxy %h %p
94:
95: Host *.fr
1.96 markus 96: PublicKeyAuthentication no
1.1 deraadt 97:
98: Host *.su
1.266 djm 99: Ciphers aes128-ctr
1.1 deraadt 100: PasswordAuthentication no
101:
1.144 reyk 102: Host vpn.fake.com
103: Tunnel yes
104: TunnelDevice 3
105:
1.1 deraadt 106: # Defaults for various options
107: Host *
108: ForwardAgent no
1.50 markus 109: ForwardX11 no
1.1 deraadt 110: PasswordAuthentication yes
111: StrictHostKeyChecking yes
1.126 markus 112: TcpKeepAlive no
1.1 deraadt 113: IdentityFile ~/.ssh/identity
114: Port 22
115: EscapeChar ~
116:
117: */
118:
1.252 djm 119: static int read_config_file_depth(const char *filename, struct passwd *pw,
120: const char *host, const char *original_host, Options *options,
1.302 djm 121: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 122: static int process_config_line_depth(Options *options, struct passwd *pw,
123: const char *host, const char *original_host, char *line,
1.302 djm 124: const char *filename, int linenum, int *activep, int flags,
125: int *want_final_pass, int depth);
1.252 djm 126:
1.1 deraadt 127: /* Keyword tokens. */
128:
1.17 markus 129: typedef enum {
130: oBadOption,
1.252 djm 131: oHost, oMatch, oInclude,
1.186 djm 132: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
133: oGatewayPorts, oExitOnForwardFailure,
1.317 dtucker 134: oPasswordAuthentication,
1.358 dtucker 135: oXAuthLocation,
1.317 dtucker 136: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.351 markus 137: oPermitRemoteOpen,
1.253 markus 138: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.317 dtucker 139: oUser, oEscapeChar, oProxyCommand,
1.17 markus 140: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
141: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.317 dtucker 142: oTCPKeepAlive, oNumberOfPasswordPrompts,
1.339 djm 143: oLogFacility, oLogLevel, oLogVerbose, oCiphers, oMacs,
1.221 djm 144: oPubkeyAuthentication,
1.67 markus 145: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 146: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 147: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 148: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 149: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 150: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 151: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 152: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 153: oHashKnownHosts,
1.277 bluhm 154: oTunnel, oTunnelDevice,
155: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 156: oVisualHostKey,
1.360 djm 157: oKexAlgorithms, oIPQoS, oRequestTTY, oSessionType, oStdinNull,
1.361 djm 158: oForkAfterAuthentication, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 159: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
160: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 161: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.350 dtucker 162: oFingerprintHash, oUpdateHostkeys, oHostbasedAcceptedAlgorithms,
1.349 dtucker 163: oPubkeyAcceptedAlgorithms, oCASignatureAlgorithms, oProxyJump,
1.369 djm 164: oSecurityKeyProvider, oKnownHostsCommand, oRequiredRSASize,
1.370 djm 165: oEnableEscapeCommandline,
1.273 djm 166: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 167: } OpCodes;
168:
169: /* Textual representations of the tokens. */
170:
1.17 markus 171: static struct {
172: const char *name;
173: OpCodes opcode;
174: } keywords[] = {
1.266 djm 175: /* Deprecated options */
1.273 djm 176: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 177: { "cipher", oDeprecated },
1.266 djm 178: { "fallbacktorsh", oDeprecated },
179: { "globalknownhostsfile2", oDeprecated },
180: { "rhostsauthentication", oDeprecated },
181: { "userknownhostsfile2", oDeprecated },
182: { "useroaming", oDeprecated },
183: { "usersh", oDeprecated },
1.294 dtucker 184: { "useprivilegedport", oDeprecated },
1.266 djm 185:
186: /* Unsupported options */
187: { "afstokenpassing", oUnsupported },
188: { "kerberosauthentication", oUnsupported },
189: { "kerberostgtpassing", oUnsupported },
1.318 dtucker 190: { "rsaauthentication", oUnsupported },
191: { "rhostsrsaauthentication", oUnsupported },
192: { "compressionlevel", oUnsupported },
1.266 djm 193:
194: /* Sometimes-unsupported options */
195: #if defined(GSSAPI)
196: { "gssapiauthentication", oGssAuthentication },
197: { "gssapidelegatecredentials", oGssDelegateCreds },
198: # else
199: { "gssapiauthentication", oUnsupported },
200: { "gssapidelegatecredentials", oUnsupported },
201: #endif
202: #ifdef ENABLE_PKCS11
1.304 djm 203: { "pkcs11provider", oPKCS11Provider },
1.266 djm 204: { "smartcarddevice", oPKCS11Provider },
205: # else
206: { "smartcarddevice", oUnsupported },
207: { "pkcs11provider", oUnsupported },
208: #endif
209:
1.17 markus 210: { "forwardagent", oForwardAgent },
211: { "forwardx11", oForwardX11 },
1.123 markus 212: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 213: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 214: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 215: { "xauthlocation", oXAuthLocation },
1.17 markus 216: { "gatewayports", oGatewayPorts },
217: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 218: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
219: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.358 dtucker 220: { "challengeresponseauthentication", oKbdInteractiveAuthentication }, /* alias */
221: { "skeyauthentication", oKbdInteractiveAuthentication }, /* alias */
222: { "tisauthentication", oKbdInteractiveAuthentication }, /* alias */
1.50 markus 223: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 224: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 225: { "hostbasedauthentication", oHostbasedAuthentication },
1.17 markus 226: { "identityfile", oIdentityFile },
1.174 stevesk 227: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 228: { "identitiesonly", oIdentitiesOnly },
1.241 djm 229: { "certificatefile", oCertificateFile },
1.246 jcs 230: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 231: { "identityagent", oIdentityAgent },
1.306 jmc 232: { "hostname", oHostname },
1.52 markus 233: { "hostkeyalias", oHostKeyAlias },
1.17 markus 234: { "proxycommand", oProxyCommand },
235: { "port", oPort },
1.25 markus 236: { "ciphers", oCiphers },
1.62 markus 237: { "macs", oMacs },
1.17 markus 238: { "remoteforward", oRemoteForward },
239: { "localforward", oLocalForward },
1.351 markus 240: { "permitremoteopen", oPermitRemoteOpen },
1.17 markus 241: { "user", oUser },
242: { "host", oHost },
1.206 djm 243: { "match", oMatch },
1.17 markus 244: { "escapechar", oEscapeChar },
245: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 246: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 247: { "connectionattempts", oConnectionAttempts },
248: { "batchmode", oBatchMode },
249: { "checkhostip", oCheckHostIP },
250: { "stricthostkeychecking", oStrictHostKeyChecking },
251: { "compression", oCompression },
1.126 markus 252: { "tcpkeepalive", oTCPKeepAlive },
253: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 254: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 255: { "syslogfacility", oLogFacility },
1.17 markus 256: { "loglevel", oLogLevel },
1.339 djm 257: { "logverbose", oLogVerbose },
1.71 markus 258: { "dynamicforward", oDynamicForward },
1.67 markus 259: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 260: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 261: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 262: { "bindaddress", oBindAddress },
1.282 djm 263: { "bindinterface", oBindInterface },
1.93 deraadt 264: { "clearallforwardings", oClearAllForwardings },
1.101 markus 265: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 266: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 267: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 268: { "rekeylimit", oRekeyLimit },
1.111 djm 269: { "connecttimeout", oConnectTimeout },
1.112 djm 270: { "addressfamily", oAddressFamily },
1.127 markus 271: { "serveraliveinterval", oServerAliveInterval },
272: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 273: { "sendenv", oSendEnv },
1.290 djm 274: { "setenv", oSetEnv },
1.132 djm 275: { "controlpath", oControlPath },
276: { "controlmaster", oControlMaster },
1.187 djm 277: { "controlpersist", oControlPersist },
1.136 djm 278: { "hashknownhosts", oHashKnownHosts },
1.252 djm 279: { "include", oInclude },
1.144 reyk 280: { "tunnel", oTunnel },
281: { "tunneldevice", oTunnelDevice },
282: { "localcommand", oLocalCommand },
283: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 284: { "remotecommand", oRemoteCommand },
1.167 grunk 285: { "visualhostkey", oVisualHostKey },
1.189 djm 286: { "kexalgorithms", oKexAlgorithms },
1.190 djm 287: { "ipqos", oIPQoS },
1.192 djm 288: { "requesttty", oRequestTTY },
1.359 djm 289: { "sessiontype", oSessionType },
1.360 djm 290: { "stdinnull", oStdinNull },
1.361 djm 291: { "forkafterauthentication", oForkAfterAuthentication },
1.205 djm 292: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 293: { "canonicaldomains", oCanonicalDomains },
1.209 djm 294: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
295: { "canonicalizehostname", oCanonicalizeHostname },
296: { "canonicalizemaxdots", oCanonicalizeMaxDots },
297: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 298: { "streamlocalbindmask", oStreamLocalBindMask },
299: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 300: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 301: { "fingerprinthash", oFingerprintHash },
1.229 djm 302: { "updatehostkeys", oUpdateHostkeys },
1.354 naddy 303: { "hostbasedacceptedalgorithms", oHostbasedAcceptedAlgorithms },
1.350 dtucker 304: { "hostbasedkeytypes", oHostbasedAcceptedAlgorithms }, /* obsolete */
1.352 dtucker 305: { "pubkeyacceptedalgorithms", oPubkeyAcceptedAlgorithms },
1.349 dtucker 306: { "pubkeyacceptedkeytypes", oPubkeyAcceptedAlgorithms }, /* obsolete */
1.199 djm 307: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 308: { "proxyjump", oProxyJump },
1.318 dtucker 309: { "securitykeyprovider", oSecurityKeyProvider },
1.346 djm 310: { "knownhostscommand", oKnownHostsCommand },
1.369 djm 311: { "requiredrsasize", oRequiredRSASize },
1.370 djm 312: { "enableescapecommandline", oEnableEscapeCommandline },
1.171 djm 313:
1.92 stevesk 314: { NULL, oBadOption }
1.13 markus 315: };
316:
1.351 markus 317: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 318:
319: const char *
320: kex_default_pk_alg(void)
321: {
1.344 djm 322: static char *pkalgs;
323:
324: if (pkalgs == NULL) {
325: char *all_key;
326:
327: all_key = sshkey_alg_list(0, 0, 1, ',');
328: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
329: free(all_key);
330: }
331: return pkalgs;
1.320 dtucker 332: }
333:
1.327 dtucker 334: char *
335: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
336: const char *user)
337: {
338: struct ssh_digest_ctx *md;
339: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
340:
341: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
342: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
343: ssh_digest_update(md, host, strlen(host)) < 0 ||
344: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
345: ssh_digest_update(md, user, strlen(user)) < 0 ||
346: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 347: fatal_f("mux digest failed");
1.327 dtucker 348: ssh_digest_free(md);
349: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
350: }
351:
1.19 markus 352: /*
353: * Adds a local TCP/IP port forward to options. Never returns if there is an
354: * error.
355: */
1.1 deraadt 356:
1.26 markus 357: void
1.220 millert 358: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 359: {
1.220 millert 360: struct Forward *fwd;
1.251 djm 361: int i;
1.185 djm 362:
1.251 djm 363: /* Don't add duplicates */
364: for (i = 0; i < options->num_local_forwards; i++) {
365: if (forward_equals(newfwd, options->local_forwards + i))
366: return;
367: }
1.234 deraadt 368: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 369: options->num_local_forwards + 1,
370: sizeof(*options->local_forwards));
1.17 markus 371: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 372:
1.172 stevesk 373: fwd->listen_host = newfwd->listen_host;
1.135 djm 374: fwd->listen_port = newfwd->listen_port;
1.220 millert 375: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 376: fwd->connect_host = newfwd->connect_host;
1.135 djm 377: fwd->connect_port = newfwd->connect_port;
1.220 millert 378: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 379: }
380:
1.19 markus 381: /*
382: * Adds a remote TCP/IP port forward to options. Never returns if there is
383: * an error.
384: */
1.1 deraadt 385:
1.26 markus 386: void
1.220 millert 387: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 388: {
1.220 millert 389: struct Forward *fwd;
1.251 djm 390: int i;
1.185 djm 391:
1.251 djm 392: /* Don't add duplicates */
393: for (i = 0; i < options->num_remote_forwards; i++) {
394: if (forward_equals(newfwd, options->remote_forwards + i))
395: return;
396: }
1.234 deraadt 397: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 398: options->num_remote_forwards + 1,
399: sizeof(*options->remote_forwards));
1.17 markus 400: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 401:
1.172 stevesk 402: fwd->listen_host = newfwd->listen_host;
1.135 djm 403: fwd->listen_port = newfwd->listen_port;
1.220 millert 404: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 405: fwd->connect_host = newfwd->connect_host;
1.135 djm 406: fwd->connect_port = newfwd->connect_port;
1.220 millert 407: fwd->connect_path = newfwd->connect_path;
1.194 markus 408: fwd->handle = newfwd->handle;
1.184 markus 409: fwd->allocated_port = 0;
1.1 deraadt 410: }
411:
1.90 stevesk 412: static void
413: clear_forwardings(Options *options)
414: {
415: int i;
416:
1.135 djm 417: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 418: free(options->local_forwards[i].listen_host);
1.220 millert 419: free(options->local_forwards[i].listen_path);
1.202 djm 420: free(options->local_forwards[i].connect_host);
1.220 millert 421: free(options->local_forwards[i].connect_path);
1.135 djm 422: }
1.185 djm 423: if (options->num_local_forwards > 0) {
1.202 djm 424: free(options->local_forwards);
1.185 djm 425: options->local_forwards = NULL;
426: }
1.90 stevesk 427: options->num_local_forwards = 0;
1.135 djm 428: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 429: free(options->remote_forwards[i].listen_host);
1.220 millert 430: free(options->remote_forwards[i].listen_path);
1.202 djm 431: free(options->remote_forwards[i].connect_host);
1.220 millert 432: free(options->remote_forwards[i].connect_path);
1.135 djm 433: }
1.185 djm 434: if (options->num_remote_forwards > 0) {
1.202 djm 435: free(options->remote_forwards);
1.185 djm 436: options->remote_forwards = NULL;
437: }
1.90 stevesk 438: options->num_remote_forwards = 0;
1.145 reyk 439: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 440: }
441:
1.195 dtucker 442: void
1.241 djm 443: add_certificate_file(Options *options, const char *path, int userprovided)
444: {
445: int i;
446:
447: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
448: fatal("Too many certificate files specified (max %d)",
449: SSH_MAX_CERTIFICATE_FILES);
450:
451: /* Avoid registering duplicates */
452: for (i = 0; i < options->num_certificate_files; i++) {
453: if (options->certificate_file_userprovided[i] == userprovided &&
454: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 455: debug2_f("ignoring duplicate key %s", path);
1.241 djm 456: return;
457: }
458: }
459:
460: options->certificate_file_userprovided[options->num_certificate_files] =
461: userprovided;
462: options->certificate_files[options->num_certificate_files++] =
463: xstrdup(path);
464: }
465:
466: void
1.195 dtucker 467: add_identity_file(Options *options, const char *dir, const char *filename,
468: int userprovided)
469: {
470: char *path;
1.219 djm 471: int i;
1.195 dtucker 472:
473: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
474: fatal("Too many identity files specified (max %d)",
475: SSH_MAX_IDENTITY_FILES);
476:
477: if (dir == NULL) /* no dir, filename is absolute */
478: path = xstrdup(filename);
1.276 djm 479: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
480: fatal("Identity file path %s too long", path);
1.219 djm 481:
482: /* Avoid registering duplicates */
483: for (i = 0; i < options->num_identity_files; i++) {
484: if (options->identity_file_userprovided[i] == userprovided &&
485: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 486: debug2_f("ignoring duplicate key %s", path);
1.219 djm 487: free(path);
488: return;
489: }
490: }
1.195 dtucker 491:
492: options->identity_file_userprovided[options->num_identity_files] =
493: userprovided;
494: options->identity_files[options->num_identity_files++] = path;
495: }
496:
1.206 djm 497: int
498: default_ssh_port(void)
499: {
500: static int port;
501: struct servent *sp;
502:
503: if (port == 0) {
504: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
505: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
506: }
507: return port;
508: }
509:
510: /*
511: * Execute a command in a shell.
512: * Return its exit status or -1 on abnormal exit.
513: */
514: static int
515: execute_in_shell(const char *cmd)
516: {
1.243 dtucker 517: char *shell;
1.206 djm 518: pid_t pid;
1.337 djm 519: int status;
1.206 djm 520:
521: if ((shell = getenv("SHELL")) == NULL)
522: shell = _PATH_BSHELL;
1.308 djm 523:
524: if (access(shell, X_OK) == -1) {
525: fatal("Shell \"%s\" is not executable: %s",
526: shell, strerror(errno));
527: }
1.206 djm 528:
529: debug("Executing command: '%.500s'", cmd);
530:
531: /* Fork and execute the command. */
532: if ((pid = fork()) == 0) {
1.245 djm 533: char *argv[4];
1.206 djm 534:
1.337 djm 535: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 536: fatal_f("stdfd_devnull failed");
1.206 djm 537: closefrom(STDERR_FILENO + 1);
1.245 djm 538:
539: argv[0] = shell;
540: argv[1] = "-c";
541: argv[2] = xstrdup(cmd);
542: argv[3] = NULL;
1.206 djm 543:
544: execv(argv[0], argv);
545: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
546: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 547: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 548: kill(getpid(), SIGTERM);
549: _exit(1);
550: }
551: /* Parent. */
1.307 deraadt 552: if (pid == -1)
1.340 djm 553: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 554:
555: while (waitpid(pid, &status, 0) == -1) {
556: if (errno != EINTR && errno != EAGAIN)
1.340 djm 557: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 558: }
559: if (!WIFEXITED(status)) {
560: error("command '%.100s' exited abnormally", cmd);
561: return -1;
1.221 djm 562: }
1.206 djm 563: debug3("command returned status %d", WEXITSTATUS(status));
564: return WEXITSTATUS(status);
565: }
566:
567: /*
1.378 ! djm 568: * Check whether a local network interface address appears in CIDR pattern-
! 569: * list 'addrlist'. Returns 1 if matched or 0 otherwise.
! 570: */
! 571: static int
! 572: check_match_ifaddrs(const char *addrlist)
! 573: {
! 574: struct ifaddrs *ifa, *ifaddrs = NULL;
! 575: int r, found = 0;
! 576: char addr[NI_MAXHOST];
! 577: socklen_t salen;
! 578:
! 579: if (getifaddrs(&ifaddrs) != 0) {
! 580: error("match localnetwork: getifaddrs failed: %s",
! 581: strerror(errno));
! 582: return 0;
! 583: }
! 584: for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
! 585: if (ifa->ifa_addr == NULL || ifa->ifa_name == NULL ||
! 586: (ifa->ifa_flags & IFF_UP) == 0)
! 587: continue;
! 588: switch (ifa->ifa_addr->sa_family) {
! 589: case AF_INET:
! 590: salen = sizeof(struct sockaddr_in);
! 591: break;
! 592: case AF_INET6:
! 593: salen = sizeof(struct sockaddr_in6);
! 594: break;
! 595: case AF_LINK:
! 596: /* ignore */
! 597: continue;
! 598: default:
! 599: debug2_f("interface %s: unsupported address family %d",
! 600: ifa->ifa_name, ifa->ifa_addr->sa_family);
! 601: continue;
! 602: }
! 603: if ((r = getnameinfo(ifa->ifa_addr, salen, addr, sizeof(addr),
! 604: NULL, 0, NI_NUMERICHOST)) != 0) {
! 605: debug2_f("interface %s getnameinfo failed: %s",
! 606: ifa->ifa_name, gai_strerror(r));
! 607: continue;
! 608: }
! 609: debug3_f("interface %s addr %s", ifa->ifa_name, addr);
! 610: if (addr_match_cidr_list(addr, addrlist) == 1) {
! 611: debug3_f("matched interface %s: address %s in %s",
! 612: ifa->ifa_name, addr, addrlist);
! 613: found = 1;
! 614: break;
! 615: }
! 616: }
! 617: freeifaddrs(ifaddrs);
! 618: return found;
! 619: }
! 620:
! 621: /*
1.206 djm 622: * Parse and execute a Match directive.
623: */
624: static int
625: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 626: const char *host_arg, const char *original_host, int final_pass,
627: int *want_final_pass, const char *filename, int linenum)
1.206 djm 628: {
1.221 djm 629: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 630: const char *ruser;
1.221 djm 631: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 632: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 633: char uidstr[32];
1.206 djm 634:
635: /*
636: * Configuration is likely to be incomplete at this point so we
637: * must be prepared to use default values.
638: */
639: port = options->port <= 0 ? default_ssh_port() : options->port;
640: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 641: if (final_pass) {
1.250 djm 642: host = xstrdup(options->hostname);
643: } else if (options->hostname != NULL) {
1.212 djm 644: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 645: host = percent_expand(options->hostname,
646: "h", host_arg, (char *)NULL);
1.250 djm 647: } else {
1.211 djm 648: host = xstrdup(host_arg);
1.250 djm 649: }
1.206 djm 650:
1.221 djm 651: debug2("checking match for '%s' host %s originally %s",
652: cp, host, original_host);
653: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
1.356 djm 654: /* Terminate on comment */
655: if (*attrib == '#') {
656: cp = NULL; /* mark all arguments consumed */
657: break;
658: }
659: arg = criteria = NULL;
1.221 djm 660: this_result = 1;
1.374 jcs 661: if ((negate = (attrib[0] == '!')))
1.221 djm 662: attrib++;
1.356 djm 663: /* Criterion "all" has no argument and must appear alone */
1.213 dtucker 664: if (strcasecmp(attrib, "all") == 0) {
1.356 djm 665: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
666: *arg != '\0' && *arg != '#')) {
1.221 djm 667: error("%.200s line %d: '%s' cannot be combined "
668: "with other Match attributes",
669: filename, linenum, oattrib);
1.213 dtucker 670: result = -1;
671: goto out;
672: }
1.356 djm 673: if (arg != NULL && *arg == '#')
674: cp = NULL; /* mark all arguments consumed */
1.221 djm 675: if (result)
676: result = negate ? 0 : 1;
1.213 dtucker 677: goto out;
678: }
1.221 djm 679: attributes++;
1.356 djm 680: /* criteria "final" and "canonical" have no argument */
1.302 djm 681: if (strcasecmp(attrib, "canonical") == 0 ||
682: strcasecmp(attrib, "final") == 0) {
683: /*
684: * If the config requests "Match final" then remember
685: * this so we can perform a second pass later.
686: */
687: if (strcasecmp(attrib, "final") == 0 &&
688: want_final_pass != NULL)
689: *want_final_pass = 1;
690: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 691: if (r == (negate ? 1 : 0))
692: this_result = result = 0;
693: debug3("%.200s line %d: %smatched '%s'",
694: filename, linenum,
695: this_result ? "" : "not ", oattrib);
696: continue;
697: }
698: /* All other criteria require an argument */
1.356 djm 699: if ((arg = strdelim(&cp)) == NULL ||
700: *arg == '\0' || *arg == '#') {
1.206 djm 701: error("Missing Match criteria for %s", attrib);
1.211 djm 702: result = -1;
703: goto out;
1.206 djm 704: }
705: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 706: criteria = xstrdup(host);
1.235 djm 707: r = match_hostname(host, arg) == 1;
1.221 djm 708: if (r == (negate ? 1 : 0))
709: this_result = result = 0;
1.206 djm 710: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 711: criteria = xstrdup(original_host);
1.235 djm 712: r = match_hostname(original_host, arg) == 1;
1.221 djm 713: if (r == (negate ? 1 : 0))
714: this_result = result = 0;
1.206 djm 715: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 716: criteria = xstrdup(ruser);
1.235 djm 717: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 718: if (r == (negate ? 1 : 0))
719: this_result = result = 0;
1.206 djm 720: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 721: criteria = xstrdup(pw->pw_name);
1.235 djm 722: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 723: if (r == (negate ? 1 : 0))
724: this_result = result = 0;
1.378 ! djm 725: } else if (strcasecmp(attrib, "localnetwork") == 0) {
! 726: if (addr_match_cidr_list(NULL, arg) == -1) {
! 727: /* Error already printed */
! 728: result = -1;
! 729: goto out;
! 730: }
! 731: r = check_match_ifaddrs(arg) == 1;
! 732: if (r == (negate ? 1 : 0))
! 733: this_result = result = 0;
1.210 djm 734: } else if (strcasecmp(attrib, "exec") == 0) {
1.333 dtucker 735: char *conn_hash_hex, *keyalias;
1.327 dtucker 736:
1.206 djm 737: if (gethostname(thishost, sizeof(thishost)) == -1)
738: fatal("gethostname: %s", strerror(errno));
739: strlcpy(shorthost, thishost, sizeof(shorthost));
740: shorthost[strcspn(thishost, ".")] = '\0';
741: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 742: snprintf(uidstr, sizeof(uidstr), "%llu",
743: (unsigned long long)pw->pw_uid);
1.327 dtucker 744: conn_hash_hex = ssh_connection_hash(thishost, host,
1.353 djm 745: portstr, ruser);
1.333 dtucker 746: keyalias = options->host_key_alias ?
747: options->host_key_alias : host;
1.206 djm 748:
749: cmd = percent_expand(arg,
1.327 dtucker 750: "C", conn_hash_hex,
1.206 djm 751: "L", shorthost,
752: "d", pw->pw_dir,
753: "h", host,
1.333 dtucker 754: "k", keyalias,
1.206 djm 755: "l", thishost,
1.221 djm 756: "n", original_host,
1.206 djm 757: "p", portstr,
758: "r", ruser,
759: "u", pw->pw_name,
1.288 djm 760: "i", uidstr,
1.206 djm 761: (char *)NULL);
1.327 dtucker 762: free(conn_hash_hex);
1.217 djm 763: if (result != 1) {
764: /* skip execution if prior predicate failed */
1.221 djm 765: debug3("%.200s line %d: skipped exec "
766: "\"%.100s\"", filename, linenum, cmd);
767: free(cmd);
768: continue;
769: }
770: r = execute_in_shell(cmd);
771: if (r == -1) {
772: fatal("%.200s line %d: match exec "
773: "'%.100s' error", filename,
774: linenum, cmd);
1.217 djm 775: }
1.221 djm 776: criteria = xstrdup(cmd);
1.206 djm 777: free(cmd);
1.221 djm 778: /* Force exit status to boolean */
779: r = r == 0;
780: if (r == (negate ? 1 : 0))
781: this_result = result = 0;
1.206 djm 782: } else {
783: error("Unsupported Match attribute %s", attrib);
1.211 djm 784: result = -1;
785: goto out;
1.206 djm 786: }
1.378 ! djm 787: debug3("%.200s line %d: %smatched '%s%s%.100s%s' ",
! 788: filename, linenum, this_result ? "": "not ", oattrib,
! 789: criteria == NULL ? "" : " \"",
! 790: criteria == NULL ? "" : criteria,
! 791: criteria == NULL ? "" : "\"");
1.221 djm 792: free(criteria);
1.213 dtucker 793: }
794: if (attributes == 0) {
795: error("One or more attributes required for Match");
796: result = -1;
797: goto out;
1.206 djm 798: }
1.221 djm 799: out:
800: if (result != -1)
801: debug2("match %sfound", result ? "" : "not ");
1.206 djm 802: *condition = cp;
1.211 djm 803: free(host);
1.206 djm 804: return result;
805: }
806:
1.286 djm 807: /* Remove environment variable by pattern */
808: static void
809: rm_env(Options *options, const char *arg, const char *filename, int linenum)
810: {
1.368 djm 811: u_int i, j, onum_send_env = options->num_send_env;
1.286 djm 812:
813: /* Remove an environment variable */
814: for (i = 0; i < options->num_send_env; ) {
1.367 millert 815: if (!match_pattern(options->send_env[i], arg + 1)) {
1.286 djm 816: i++;
817: continue;
818: }
819: debug3("%s line %d: removing environment %s",
1.367 millert 820: filename, linenum, options->send_env[i]);
1.286 djm 821: free(options->send_env[i]);
822: options->send_env[i] = NULL;
823: for (j = i; j < options->num_send_env - 1; j++) {
824: options->send_env[j] = options->send_env[j + 1];
825: options->send_env[j + 1] = NULL;
826: }
827: options->num_send_env--;
828: /* NB. don't increment i */
1.330 djm 829: }
830: if (onum_send_env != options->num_send_env) {
831: options->send_env = xrecallocarray(options->send_env,
832: onum_send_env, options->num_send_env,
833: sizeof(*options->send_env));
1.286 djm 834: }
835: }
836:
1.19 markus 837: /*
1.70 stevesk 838: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 839: */
1.26 markus 840: static OpCodes
1.199 djm 841: parse_token(const char *cp, const char *filename, int linenum,
842: const char *ignored_unknown)
1.1 deraadt 843: {
1.199 djm 844: int i;
1.1 deraadt 845:
1.17 markus 846: for (i = 0; keywords[i].name; i++)
1.199 djm 847: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 848: return keywords[i].opcode;
1.235 djm 849: if (ignored_unknown != NULL &&
850: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 851: return oIgnoredUnknownOption;
1.75 stevesk 852: error("%s: line %d: Bad configuration option: %s",
853: filename, linenum, cp);
1.17 markus 854: return oBadOption;
1.1 deraadt 855: }
856:
1.207 djm 857: /* Multistate option parsing */
858: struct multistate {
859: char *key;
860: int value;
861: };
862: static const struct multistate multistate_flag[] = {
863: { "true", 1 },
864: { "false", 0 },
865: { "yes", 1 },
866: { "no", 0 },
867: { NULL, -1 }
868: };
869: static const struct multistate multistate_yesnoask[] = {
870: { "true", 1 },
871: { "false", 0 },
872: { "yes", 1 },
873: { "no", 0 },
874: { "ask", 2 },
875: { NULL, -1 }
876: };
1.278 djm 877: static const struct multistate multistate_strict_hostkey[] = {
878: { "true", SSH_STRICT_HOSTKEY_YES },
879: { "false", SSH_STRICT_HOSTKEY_OFF },
880: { "yes", SSH_STRICT_HOSTKEY_YES },
881: { "no", SSH_STRICT_HOSTKEY_OFF },
882: { "ask", SSH_STRICT_HOSTKEY_ASK },
883: { "off", SSH_STRICT_HOSTKEY_OFF },
884: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
885: { NULL, -1 }
886: };
1.246 jcs 887: static const struct multistate multistate_yesnoaskconfirm[] = {
888: { "true", 1 },
889: { "false", 0 },
890: { "yes", 1 },
891: { "no", 0 },
892: { "ask", 2 },
893: { "confirm", 3 },
894: { NULL, -1 }
895: };
1.207 djm 896: static const struct multistate multistate_addressfamily[] = {
897: { "inet", AF_INET },
898: { "inet6", AF_INET6 },
899: { "any", AF_UNSPEC },
900: { NULL, -1 }
901: };
902: static const struct multistate multistate_controlmaster[] = {
903: { "true", SSHCTL_MASTER_YES },
904: { "yes", SSHCTL_MASTER_YES },
905: { "false", SSHCTL_MASTER_NO },
906: { "no", SSHCTL_MASTER_NO },
907: { "auto", SSHCTL_MASTER_AUTO },
908: { "ask", SSHCTL_MASTER_ASK },
909: { "autoask", SSHCTL_MASTER_AUTO_ASK },
910: { NULL, -1 }
911: };
912: static const struct multistate multistate_tunnel[] = {
913: { "ethernet", SSH_TUNMODE_ETHERNET },
914: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
915: { "true", SSH_TUNMODE_DEFAULT },
916: { "yes", SSH_TUNMODE_DEFAULT },
917: { "false", SSH_TUNMODE_NO },
918: { "no", SSH_TUNMODE_NO },
919: { NULL, -1 }
920: };
921: static const struct multistate multistate_requesttty[] = {
922: { "true", REQUEST_TTY_YES },
923: { "yes", REQUEST_TTY_YES },
924: { "false", REQUEST_TTY_NO },
925: { "no", REQUEST_TTY_NO },
926: { "force", REQUEST_TTY_FORCE },
927: { "auto", REQUEST_TTY_AUTO },
928: { NULL, -1 }
929: };
1.359 djm 930: static const struct multistate multistate_sessiontype[] = {
931: { "none", SESSION_TYPE_NONE },
932: { "subsystem", SESSION_TYPE_SUBSYSTEM },
933: { "default", SESSION_TYPE_DEFAULT },
934: { NULL, -1 }
935: };
1.209 djm 936: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 937: { "true", SSH_CANONICALISE_YES },
938: { "false", SSH_CANONICALISE_NO },
939: { "yes", SSH_CANONICALISE_YES },
940: { "no", SSH_CANONICALISE_NO },
941: { "always", SSH_CANONICALISE_ALWAYS },
942: { NULL, -1 }
943: };
1.364 djm 944: static const struct multistate multistate_pubkey_auth[] = {
945: { "true", SSH_PUBKEY_AUTH_ALL },
946: { "false", SSH_PUBKEY_AUTH_NO },
947: { "yes", SSH_PUBKEY_AUTH_ALL },
948: { "no", SSH_PUBKEY_AUTH_NO },
949: { "unbound", SSH_PUBKEY_AUTH_UNBOUND },
950: { "host-bound", SSH_PUBKEY_AUTH_HBOUND },
951: { NULL, -1 }
952: };
1.322 dtucker 953: static const struct multistate multistate_compression[] = {
954: #ifdef WITH_ZLIB
955: { "yes", COMP_ZLIB },
956: #endif
957: { "no", COMP_NONE },
958: { NULL, -1 }
959: };
1.207 djm 960:
1.334 djm 961: static int
962: parse_multistate_value(const char *arg, const char *filename, int linenum,
963: const struct multistate *multistate_ptr)
964: {
965: int i;
966:
1.344 djm 967: if (!arg || *arg == '\0') {
968: error("%s line %d: missing argument.", filename, linenum);
969: return -1;
970: }
1.334 djm 971: for (i = 0; multistate_ptr[i].key != NULL; i++) {
972: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
973: return multistate_ptr[i].value;
974: }
975: return -1;
976: }
977:
1.19 markus 978: /*
979: * Processes a single option line as used in the configuration files. This
980: * only sets those values that have not already been set.
981: */
1.14 markus 982: int
1.206 djm 983: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 984: const char *original_host, char *line, const char *filename,
985: int linenum, int *activep, int flags)
1.1 deraadt 986: {
1.252 djm 987: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 988: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 989: }
990:
991: #define WHITESPACE " \t\r\n"
992: static int
993: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
994: const char *original_host, char *line, const char *filename,
1.302 djm 995: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 996: {
1.366 dtucker 997: char *str, **charptr, *endofnumber, *keyword, *arg, *arg2, *p;
1.339 djm 998: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 999: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 1000: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.377 djm 1001: int remotefwd, dynamicfwd, ca_only = 0;
1.164 dtucker 1002: LogLevel *log_level_ptr;
1.271 dtucker 1003: SyslogFacility *log_facility_ptr;
1.201 dtucker 1004: long long val64;
1.102 markus 1005: size_t len;
1.220 millert 1006: struct Forward fwd;
1.207 djm 1007: const struct multistate *multistate_ptr;
1.208 djm 1008: struct allowed_cname *cname;
1.252 djm 1009: glob_t gl;
1.281 dtucker 1010: const char *errstr;
1.356 djm 1011: char **oav = NULL, **av;
1012: int oac = 0, ac;
1013: int ret = -1;
1.106 djm 1014:
1.206 djm 1015: if (activep == NULL) { /* We are processing a command line directive */
1016: cmdline = 1;
1017: activep = &cmdline;
1018: }
1019:
1.267 djm 1020: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 1021: if ((len = strlen(line)) == 0)
1022: return 0;
1023: for (len--; len > 0; len--) {
1.267 djm 1024: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 1025: break;
1026: line[len] = '\0';
1027: }
1.1 deraadt 1028:
1.356 djm 1029: str = line;
1.42 provos 1030: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 1031: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 1032: return 0;
1.42 provos 1033: /* Ignore leading whitespace. */
1034: if (*keyword == '\0')
1.356 djm 1035: keyword = strdelim(&str);
1.56 deraadt 1036: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 1037: return 0;
1.199 djm 1038: /* Match lowercase keyword */
1.207 djm 1039: lowercase(keyword);
1.17 markus 1040:
1.356 djm 1041: /* Prepare to parse remainder of line */
1042: if (str != NULL)
1043: str += strspn(str, WHITESPACE);
1044: if (str == NULL || *str == '\0') {
1045: error("%s line %d: no argument after keyword \"%s\"",
1046: filename, linenum, keyword);
1047: return -1;
1048: }
1.199 djm 1049: opcode = parse_token(keyword, filename, linenum,
1050: options->ignored_unknown);
1.356 djm 1051: if (argv_split(str, &oac, &oav, 1) != 0) {
1052: error("%s line %d: invalid quotes", filename, linenum);
1053: return -1;
1054: }
1055: ac = oac;
1056: av = oav;
1.17 markus 1057:
1058: switch (opcode) {
1059: case oBadOption:
1.19 markus 1060: /* don't panic, but count bad options */
1.356 djm 1061: goto out;
1.273 djm 1062: case oIgnore:
1.356 djm 1063: argv_consume(&ac);
1064: break;
1.199 djm 1065: case oIgnoredUnknownOption:
1066: debug("%s line %d: Ignored unknown option \"%s\"",
1067: filename, linenum, keyword);
1.356 djm 1068: argv_consume(&ac);
1069: break;
1.111 djm 1070: case oConnectTimeout:
1071: intptr = &options->connection_timeout;
1.127 markus 1072: parse_time:
1.356 djm 1073: arg = argv_next(&ac, &av);
1.344 djm 1074: if (!arg || *arg == '\0') {
1075: error("%s line %d: missing time value.",
1.111 djm 1076: filename, linenum);
1.356 djm 1077: goto out;
1.344 djm 1078: }
1.221 djm 1079: if (strcmp(arg, "none") == 0)
1080: value = -1;
1.344 djm 1081: else if ((value = convtime(arg)) == -1) {
1082: error("%s line %d: invalid time value.",
1.111 djm 1083: filename, linenum);
1.356 djm 1084: goto out;
1.344 djm 1085: }
1.160 dtucker 1086: if (*activep && *intptr == -1)
1.111 djm 1087: *intptr = value;
1088: break;
1089:
1.17 markus 1090: case oForwardAgent:
1091: intptr = &options->forward_agent;
1.319 djm 1092:
1.356 djm 1093: arg = argv_next(&ac, &av);
1.344 djm 1094: if (!arg || *arg == '\0') {
1095: error("%s line %d: missing argument.",
1.319 djm 1096: filename, linenum);
1.356 djm 1097: goto out;
1.344 djm 1098: }
1.319 djm 1099:
1100: value = -1;
1101: multistate_ptr = multistate_flag;
1102: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1103: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1104: value = multistate_ptr[i].value;
1105: break;
1106: }
1107: }
1108: if (value != -1) {
1109: if (*activep && *intptr == -1)
1110: *intptr = value;
1111: break;
1112: }
1113: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1114: if (*activep && *intptr == -1)
1115: *intptr = 1;
1116:
1117: charptr = &options->forward_agent_sock_path;
1118: goto parse_agent_path;
1119:
1120: case oForwardX11:
1121: intptr = &options->forward_x11;
1.207 djm 1122: parse_flag:
1123: multistate_ptr = multistate_flag;
1124: parse_multistate:
1.356 djm 1125: arg = argv_next(&ac, &av);
1.334 djm 1126: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1127: multistate_ptr)) == -1) {
1.344 djm 1128: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1129: filename, linenum, arg);
1.356 djm 1130: goto out;
1.334 djm 1131: }
1.17 markus 1132: if (*activep && *intptr == -1)
1133: *intptr = value;
1134: break;
1135:
1.123 markus 1136: case oForwardX11Trusted:
1137: intptr = &options->forward_x11_trusted;
1138: goto parse_flag;
1.221 djm 1139:
1.186 djm 1140: case oForwardX11Timeout:
1141: intptr = &options->forward_x11_timeout;
1142: goto parse_time;
1.123 markus 1143:
1.17 markus 1144: case oGatewayPorts:
1.220 millert 1145: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1146: goto parse_flag;
1147:
1.153 markus 1148: case oExitOnForwardFailure:
1149: intptr = &options->exit_on_forward_failure;
1150: goto parse_flag;
1151:
1.17 markus 1152: case oPasswordAuthentication:
1153: intptr = &options->password_authentication;
1154: goto parse_flag;
1155:
1.48 markus 1156: case oKbdInteractiveAuthentication:
1157: intptr = &options->kbd_interactive_authentication;
1158: goto parse_flag;
1159:
1160: case oKbdInteractiveDevices:
1161: charptr = &options->kbd_interactive_devices;
1162: goto parse_string;
1163:
1.50 markus 1164: case oPubkeyAuthentication:
1.364 djm 1165: multistate_ptr = multistate_pubkey_auth;
1.50 markus 1166: intptr = &options->pubkey_authentication;
1.364 djm 1167: goto parse_multistate;
1.30 markus 1168:
1.72 markus 1169: case oHostbasedAuthentication:
1170: intptr = &options->hostbased_authentication;
1171: goto parse_flag;
1172:
1.118 markus 1173: case oGssAuthentication:
1174: intptr = &options->gss_authentication;
1175: goto parse_flag;
1176:
1177: case oGssDelegateCreds:
1178: intptr = &options->gss_deleg_creds;
1179: goto parse_flag;
1180:
1.17 markus 1181: case oBatchMode:
1182: intptr = &options->batch_mode;
1183: goto parse_flag;
1184:
1185: case oCheckHostIP:
1186: intptr = &options->check_host_ip;
1.167 grunk 1187: goto parse_flag;
1.17 markus 1188:
1.107 jakob 1189: case oVerifyHostKeyDNS:
1190: intptr = &options->verify_host_key_dns;
1.207 djm 1191: multistate_ptr = multistate_yesnoask;
1192: goto parse_multistate;
1.107 jakob 1193:
1.17 markus 1194: case oStrictHostKeyChecking:
1195: intptr = &options->strict_host_key_checking;
1.278 djm 1196: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1197: goto parse_multistate;
1.17 markus 1198:
1199: case oCompression:
1200: intptr = &options->compression;
1.322 dtucker 1201: multistate_ptr = multistate_compression;
1202: goto parse_multistate;
1.17 markus 1203:
1.126 markus 1204: case oTCPKeepAlive:
1205: intptr = &options->tcp_keep_alive;
1.17 markus 1206: goto parse_flag;
1207:
1.91 markus 1208: case oNoHostAuthenticationForLocalhost:
1209: intptr = &options->no_host_authentication_for_localhost;
1210: goto parse_flag;
1211:
1.17 markus 1212: case oNumberOfPasswordPrompts:
1213: intptr = &options->number_of_password_prompts;
1214: goto parse_int;
1215:
1.105 markus 1216: case oRekeyLimit:
1.356 djm 1217: arg = argv_next(&ac, &av);
1.344 djm 1218: if (!arg || *arg == '\0') {
1219: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1220: linenum);
1.356 djm 1221: goto out;
1.344 djm 1222: }
1.198 dtucker 1223: if (strcmp(arg, "default") == 0) {
1224: val64 = 0;
1225: } else {
1.344 djm 1226: if (scan_scaled(arg, &val64) == -1) {
1227: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1228: filename, linenum, arg, strerror(errno));
1.356 djm 1229: goto out;
1.344 djm 1230: }
1231: if (val64 != 0 && val64 < 16) {
1232: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1233: filename, linenum);
1.356 djm 1234: goto out;
1.344 djm 1235: }
1.105 markus 1236: }
1.165 djm 1237: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1238: options->rekey_limit = val64;
1.356 djm 1239: if (ac != 0) { /* optional rekey interval present */
1240: if (strcmp(av[0], "none") == 0) {
1241: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1242: break;
1243: }
1244: intptr = &options->rekey_interval;
1245: goto parse_time;
1246: }
1.105 markus 1247: break;
1248:
1.17 markus 1249: case oIdentityFile:
1.356 djm 1250: arg = argv_next(&ac, &av);
1.344 djm 1251: if (!arg || *arg == '\0') {
1252: error("%.200s line %d: Missing argument.",
1253: filename, linenum);
1.356 djm 1254: goto out;
1.344 djm 1255: }
1.17 markus 1256: if (*activep) {
1.50 markus 1257: intptr = &options->num_identity_files;
1.344 djm 1258: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1259: error("%.200s line %d: Too many identity files "
1260: "specified (max %d).", filename, linenum,
1261: SSH_MAX_IDENTITY_FILES);
1.356 djm 1262: goto out;
1.344 djm 1263: }
1.221 djm 1264: add_identity_file(options, NULL,
1265: arg, flags & SSHCONF_USERCONF);
1.17 markus 1266: }
1267: break;
1268:
1.241 djm 1269: case oCertificateFile:
1.356 djm 1270: arg = argv_next(&ac, &av);
1.344 djm 1271: if (!arg || *arg == '\0') {
1272: error("%.200s line %d: Missing argument.",
1.241 djm 1273: filename, linenum);
1.356 djm 1274: goto out;
1.344 djm 1275: }
1.241 djm 1276: if (*activep) {
1277: intptr = &options->num_certificate_files;
1278: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1279: error("%.200s line %d: Too many certificate "
1.241 djm 1280: "files specified (max %d).",
1281: filename, linenum,
1282: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1283: goto out;
1.241 djm 1284: }
1285: add_certificate_file(options, arg,
1286: flags & SSHCONF_USERCONF);
1287: }
1288: break;
1289:
1.34 markus 1290: case oXAuthLocation:
1291: charptr=&options->xauth_location;
1292: goto parse_string;
1293:
1.17 markus 1294: case oUser:
1295: charptr = &options->user;
1296: parse_string:
1.356 djm 1297: arg = argv_next(&ac, &av);
1.344 djm 1298: if (!arg || *arg == '\0') {
1299: error("%.200s line %d: Missing argument.",
1.193 djm 1300: filename, linenum);
1.356 djm 1301: goto out;
1.344 djm 1302: }
1.17 markus 1303: if (*activep && *charptr == NULL)
1.38 provos 1304: *charptr = xstrdup(arg);
1.17 markus 1305: break;
1306:
1307: case oGlobalKnownHostsFile:
1.193 djm 1308: cpptr = (char **)&options->system_hostfiles;
1309: uintptr = &options->num_system_hostfiles;
1310: max_entries = SSH_MAX_HOSTS_FILES;
1311: parse_char_array:
1.356 djm 1312: i = 0;
1.357 djm 1313: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1314: while ((arg = argv_next(&ac, &av)) != NULL) {
1315: if (*arg == '\0') {
1316: error("%s line %d: keyword %s empty argument",
1317: filename, linenum, keyword);
1318: goto out;
1319: }
1320: /* Allow "none" only in first position */
1321: if (strcasecmp(arg, "none") == 0) {
1322: if (i > 0 || ac > 0) {
1323: error("%s line %d: keyword %s \"none\" "
1324: "argument must appear alone.",
1325: filename, linenum, keyword);
1326: goto out;
1327: }
1328: }
1329: i++;
1.357 djm 1330: if (*activep && value) {
1.344 djm 1331: if ((*uintptr) >= max_entries) {
1.356 djm 1332: error("%s line %d: too many %s "
1333: "entries.", filename, linenum,
1334: keyword);
1335: goto out;
1.344 djm 1336: }
1.193 djm 1337: cpptr[(*uintptr)++] = xstrdup(arg);
1338: }
1339: }
1.356 djm 1340: break;
1.17 markus 1341:
1342: case oUserKnownHostsFile:
1.193 djm 1343: cpptr = (char **)&options->user_hostfiles;
1344: uintptr = &options->num_user_hostfiles;
1345: max_entries = SSH_MAX_HOSTS_FILES;
1346: goto parse_char_array;
1.27 markus 1347:
1.306 jmc 1348: case oHostname:
1.17 markus 1349: charptr = &options->hostname;
1350: goto parse_string;
1351:
1.52 markus 1352: case oHostKeyAlias:
1353: charptr = &options->host_key_alias;
1354: goto parse_string;
1355:
1.67 markus 1356: case oPreferredAuthentications:
1357: charptr = &options->preferred_authentications;
1358: goto parse_string;
1359:
1.77 markus 1360: case oBindAddress:
1361: charptr = &options->bind_address;
1362: goto parse_string;
1363:
1.282 djm 1364: case oBindInterface:
1365: charptr = &options->bind_interface;
1366: goto parse_string;
1367:
1.183 markus 1368: case oPKCS11Provider:
1369: charptr = &options->pkcs11_provider;
1.86 markus 1370: goto parse_string;
1.85 jakob 1371:
1.310 djm 1372: case oSecurityKeyProvider:
1373: charptr = &options->sk_provider;
1374: goto parse_string;
1375:
1.346 djm 1376: case oKnownHostsCommand:
1377: charptr = &options->known_hosts_command;
1378: goto parse_command;
1379:
1.17 markus 1380: case oProxyCommand:
1.144 reyk 1381: charptr = &options->proxy_command;
1.257 djm 1382: /* Ignore ProxyCommand if ProxyJump already specified */
1383: if (options->jump_host != NULL)
1384: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1385: parse_command:
1.356 djm 1386: if (str == NULL) {
1.344 djm 1387: error("%.200s line %d: Missing argument.",
1388: filename, linenum);
1.356 djm 1389: goto out;
1.344 djm 1390: }
1.356 djm 1391: len = strspn(str, WHITESPACE "=");
1.17 markus 1392: if (*activep && *charptr == NULL)
1.356 djm 1393: *charptr = xstrdup(str + len);
1394: argv_consume(&ac);
1395: break;
1.17 markus 1396:
1.257 djm 1397: case oProxyJump:
1.356 djm 1398: if (str == NULL) {
1.344 djm 1399: error("%.200s line %d: Missing argument.",
1.257 djm 1400: filename, linenum);
1.356 djm 1401: goto out;
1.257 djm 1402: }
1.356 djm 1403: len = strspn(str, WHITESPACE "=");
1404: /* XXX use argv? */
1405: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1406: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1407: filename, linenum, str + len);
1408: goto out;
1.257 djm 1409: }
1.356 djm 1410: argv_consume(&ac);
1411: break;
1.257 djm 1412:
1.17 markus 1413: case oPort:
1.356 djm 1414: arg = argv_next(&ac, &av);
1.344 djm 1415: if (!arg || *arg == '\0') {
1416: error("%.200s line %d: Missing argument.",
1.300 naddy 1417: filename, linenum);
1.356 djm 1418: goto out;
1.344 djm 1419: }
1.300 naddy 1420: value = a2port(arg);
1.344 djm 1421: if (value <= 0) {
1422: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1423: filename, linenum, arg);
1.356 djm 1424: goto out;
1.344 djm 1425: }
1.300 naddy 1426: if (*activep && options->port == -1)
1427: options->port = value;
1428: break;
1429:
1430: case oConnectionAttempts:
1431: intptr = &options->connection_attempts;
1.17 markus 1432: parse_int:
1.356 djm 1433: arg = argv_next(&ac, &av);
1.344 djm 1434: if ((errstr = atoi_err(arg, &value)) != NULL) {
1435: error("%s line %d: integer value %s.",
1.281 dtucker 1436: filename, linenum, errstr);
1.356 djm 1437: goto out;
1.344 djm 1438: }
1.17 markus 1439: if (*activep && *intptr == -1)
1440: *intptr = value;
1441: break;
1442:
1.25 markus 1443: case oCiphers:
1.356 djm 1444: arg = argv_next(&ac, &av);
1.344 djm 1445: if (!arg || *arg == '\0') {
1446: error("%.200s line %d: Missing argument.",
1447: filename, linenum);
1.356 djm 1448: goto out;
1.344 djm 1449: }
1.309 naddy 1450: if (*arg != '-' &&
1.344 djm 1451: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1452: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1453: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1454: goto out;
1.344 djm 1455: }
1.25 markus 1456: if (*activep && options->ciphers == NULL)
1.38 provos 1457: options->ciphers = xstrdup(arg);
1.25 markus 1458: break;
1459:
1.62 markus 1460: case oMacs:
1.356 djm 1461: arg = argv_next(&ac, &av);
1.344 djm 1462: if (!arg || *arg == '\0') {
1463: error("%.200s line %d: Missing argument.",
1464: filename, linenum);
1.356 djm 1465: goto out;
1.344 djm 1466: }
1.309 naddy 1467: if (*arg != '-' &&
1.344 djm 1468: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1469: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1470: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1471: goto out;
1.344 djm 1472: }
1.62 markus 1473: if (*activep && options->macs == NULL)
1474: options->macs = xstrdup(arg);
1475: break;
1476:
1.189 djm 1477: case oKexAlgorithms:
1.356 djm 1478: arg = argv_next(&ac, &av);
1.344 djm 1479: if (!arg || *arg == '\0') {
1480: error("%.200s line %d: Missing argument.",
1.189 djm 1481: filename, linenum);
1.356 djm 1482: goto out;
1.344 djm 1483: }
1.268 djm 1484: if (*arg != '-' &&
1.309 naddy 1485: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1486: arg + 1 : arg)) {
1487: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1488: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1489: goto out;
1.344 djm 1490: }
1.189 djm 1491: if (*activep && options->kex_algorithms == NULL)
1492: options->kex_algorithms = xstrdup(arg);
1493: break;
1494:
1.76 markus 1495: case oHostKeyAlgorithms:
1.238 markus 1496: charptr = &options->hostkeyalgorithms;
1.377 djm 1497: ca_only = 0;
1.349 dtucker 1498: parse_pubkey_algos:
1.356 djm 1499: arg = argv_next(&ac, &av);
1.344 djm 1500: if (!arg || *arg == '\0') {
1501: error("%.200s line %d: Missing argument.",
1.238 markus 1502: filename, linenum);
1.356 djm 1503: goto out;
1.344 djm 1504: }
1.268 djm 1505: if (*arg != '-' &&
1.309 naddy 1506: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.377 djm 1507: arg + 1 : arg, 1, ca_only)) {
1.344 djm 1508: error("%s line %d: Bad key types '%s'.",
1509: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1510: goto out;
1.344 djm 1511: }
1.238 markus 1512: if (*activep && *charptr == NULL)
1513: *charptr = xstrdup(arg);
1.76 markus 1514: break;
1515:
1.298 djm 1516: case oCASignatureAlgorithms:
1517: charptr = &options->ca_sign_algorithms;
1.377 djm 1518: ca_only = 1;
1.349 dtucker 1519: goto parse_pubkey_algos;
1.298 djm 1520:
1.17 markus 1521: case oLogLevel:
1.164 dtucker 1522: log_level_ptr = &options->log_level;
1.356 djm 1523: arg = argv_next(&ac, &av);
1.38 provos 1524: value = log_level_number(arg);
1.344 djm 1525: if (value == SYSLOG_LEVEL_NOT_SET) {
1526: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1527: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1528: goto out;
1.344 djm 1529: }
1.164 dtucker 1530: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1531: *log_level_ptr = (LogLevel) value;
1.17 markus 1532: break;
1533:
1.271 dtucker 1534: case oLogFacility:
1535: log_facility_ptr = &options->log_facility;
1.356 djm 1536: arg = argv_next(&ac, &av);
1.271 dtucker 1537: value = log_facility_number(arg);
1.344 djm 1538: if (value == SYSLOG_FACILITY_NOT_SET) {
1539: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1540: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1541: goto out;
1.344 djm 1542: }
1.271 dtucker 1543: if (*log_facility_ptr == -1)
1544: *log_facility_ptr = (SyslogFacility) value;
1545: break;
1546:
1.339 djm 1547: case oLogVerbose:
1548: cppptr = &options->log_verbose;
1549: uintptr = &options->num_log_verbose;
1.356 djm 1550: i = 0;
1551: while ((arg = argv_next(&ac, &av)) != NULL) {
1552: if (*arg == '\0') {
1553: error("%s line %d: keyword %s empty argument",
1554: filename, linenum, keyword);
1555: goto out;
1556: }
1557: /* Allow "none" only in first position */
1558: if (strcasecmp(arg, "none") == 0) {
1559: if (i > 0 || ac > 0) {
1560: error("%s line %d: keyword %s \"none\" "
1561: "argument must appear alone.",
1562: filename, linenum, keyword);
1563: goto out;
1564: }
1565: }
1566: i++;
1567: if (*activep && *uintptr == 0) {
1.339 djm 1568: *cppptr = xrecallocarray(*cppptr, *uintptr,
1569: *uintptr + 1, sizeof(**cppptr));
1570: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1571: }
1572: }
1.356 djm 1573: break;
1.339 djm 1574:
1.88 stevesk 1575: case oLocalForward:
1.17 markus 1576: case oRemoteForward:
1.168 stevesk 1577: case oDynamicForward:
1.356 djm 1578: arg = argv_next(&ac, &av);
1.344 djm 1579: if (!arg || *arg == '\0') {
1580: error("%.200s line %d: Missing argument.",
1.88 stevesk 1581: filename, linenum);
1.356 djm 1582: goto out;
1.344 djm 1583: }
1.135 djm 1584:
1.279 markus 1585: remotefwd = (opcode == oRemoteForward);
1586: dynamicfwd = (opcode == oDynamicForward);
1587:
1588: if (!dynamicfwd) {
1.356 djm 1589: arg2 = argv_next(&ac, &av);
1.279 markus 1590: if (arg2 == NULL || *arg2 == '\0') {
1591: if (remotefwd)
1592: dynamicfwd = 1;
1.344 djm 1593: else {
1594: error("%.200s line %d: Missing target "
1.279 markus 1595: "argument.", filename, linenum);
1.356 djm 1596: goto out;
1.344 djm 1597: }
1.279 markus 1598: } else {
1599: /* construct a string for parse_forward */
1600: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1601: arg2);
1602: }
1603: }
1604: if (dynamicfwd)
1.168 stevesk 1605: strlcpy(fwdarg, arg, sizeof(fwdarg));
1606:
1.344 djm 1607: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1608: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1609: filename, linenum);
1.356 djm 1610: goto out;
1.344 djm 1611: }
1.135 djm 1612:
1.88 stevesk 1613: if (*activep) {
1.279 markus 1614: if (remotefwd) {
1615: add_remote_forward(options, &fwd);
1616: } else {
1.135 djm 1617: add_local_forward(options, &fwd);
1.279 markus 1618: }
1.88 stevesk 1619: }
1.17 markus 1620: break;
1.71 markus 1621:
1.351 markus 1622: case oPermitRemoteOpen:
1623: uintptr = &options->num_permitted_remote_opens;
1624: cppptr = &options->permitted_remote_opens;
1625: uvalue = *uintptr; /* modified later */
1.371 djm 1626: i = 0;
1.356 djm 1627: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1628: arg2 = xstrdup(arg);
1.371 djm 1629: /* Allow any/none only in first position */
1630: if (strcasecmp(arg, "none") == 0 ||
1631: strcasecmp(arg, "any") == 0) {
1632: if (i > 0 || ac > 0) {
1633: error("%s line %d: keyword %s \"%s\" "
1634: "argument must appear alone.",
1635: filename, linenum, keyword, arg);
1.376 djm 1636: free(arg2);
1.371 djm 1637: goto out;
1638: }
1639: } else {
1640: p = hpdelim(&arg);
1641: if (p == NULL) {
1642: fatal("%s line %d: missing host in %s",
1643: filename, linenum,
1644: lookup_opcode_name(opcode));
1645: }
1646: p = cleanhostname(p);
1647: /*
1648: * don't want to use permitopen_port to avoid
1649: * dependency on channels.[ch] here.
1650: */
1651: if (arg == NULL || (strcmp(arg, "*") != 0 &&
1652: a2port(arg) <= 0)) {
1653: fatal("%s line %d: bad port number "
1654: "in %s", filename, linenum,
1655: lookup_opcode_name(opcode));
1656: }
1.351 markus 1657: }
1658: if (*activep && uvalue == 0) {
1659: opt_array_append(filename, linenum,
1660: lookup_opcode_name(opcode),
1661: cppptr, uintptr, arg2);
1662: }
1663: free(arg2);
1.371 djm 1664: i++;
1.351 markus 1665: }
1.371 djm 1666: if (i == 0)
1667: fatal("%s line %d: missing %s specification",
1668: filename, linenum, lookup_opcode_name(opcode));
1.351 markus 1669: break;
1670:
1.90 stevesk 1671: case oClearAllForwardings:
1672: intptr = &options->clear_forwardings;
1673: goto parse_flag;
1674:
1.17 markus 1675: case oHost:
1.344 djm 1676: if (cmdline) {
1677: error("Host directive not supported as a command-line "
1.206 djm 1678: "option");
1.356 djm 1679: goto out;
1.344 djm 1680: }
1.17 markus 1681: *activep = 0;
1.191 djm 1682: arg2 = NULL;
1.356 djm 1683: while ((arg = argv_next(&ac, &av)) != NULL) {
1684: if (*arg == '\0') {
1685: error("%s line %d: keyword %s empty argument",
1686: filename, linenum, keyword);
1687: goto out;
1688: }
1689: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1690: argv_consume(&ac);
1.252 djm 1691: break;
1.356 djm 1692: }
1.191 djm 1693: negated = *arg == '!';
1694: if (negated)
1695: arg++;
1.38 provos 1696: if (match_pattern(host, arg)) {
1.191 djm 1697: if (negated) {
1698: debug("%.200s line %d: Skipping Host "
1699: "block because of negated match "
1700: "for %.100s", filename, linenum,
1701: arg);
1702: *activep = 0;
1.356 djm 1703: argv_consume(&ac);
1.191 djm 1704: break;
1705: }
1706: if (!*activep)
1707: arg2 = arg; /* logged below */
1.17 markus 1708: *activep = 1;
1709: }
1.191 djm 1710: }
1711: if (*activep)
1712: debug("%.200s line %d: Applying options for %.100s",
1713: filename, linenum, arg2);
1.356 djm 1714: break;
1.17 markus 1715:
1.206 djm 1716: case oMatch:
1.344 djm 1717: if (cmdline) {
1718: error("Host directive not supported as a command-line "
1.206 djm 1719: "option");
1.356 djm 1720: goto out;
1.344 djm 1721: }
1.356 djm 1722: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1723: flags & SSHCONF_FINAL, want_final_pass,
1724: filename, linenum);
1.344 djm 1725: if (value < 0) {
1726: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1727: linenum);
1.356 djm 1728: goto out;
1.344 djm 1729: }
1.252 djm 1730: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1731: /*
1732: * If match_cfg_line() didn't consume all its arguments then
1733: * arrange for the extra arguments check below to fail.
1734: */
1735:
1736: if (str == NULL || *str == '\0')
1737: argv_consume(&ac);
1.206 djm 1738: break;
1739:
1.17 markus 1740: case oEscapeChar:
1741: intptr = &options->escape_char;
1.356 djm 1742: arg = argv_next(&ac, &av);
1.344 djm 1743: if (!arg || *arg == '\0') {
1744: error("%.200s line %d: Missing argument.",
1745: filename, linenum);
1.356 djm 1746: goto out;
1.344 djm 1747: }
1.236 djm 1748: if (strcmp(arg, "none") == 0)
1749: value = SSH_ESCAPECHAR_NONE;
1750: else if (arg[1] == '\0')
1751: value = (u_char) arg[0];
1752: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1753: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1754: value = (u_char) arg[1] & 31;
1.17 markus 1755: else {
1.344 djm 1756: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1757: filename, linenum);
1.356 djm 1758: goto out;
1.17 markus 1759: }
1760: if (*activep && *intptr == -1)
1761: *intptr = value;
1.112 djm 1762: break;
1763:
1764: case oAddressFamily:
1.114 djm 1765: intptr = &options->address_family;
1.207 djm 1766: multistate_ptr = multistate_addressfamily;
1767: goto parse_multistate;
1.17 markus 1768:
1.101 markus 1769: case oEnableSSHKeysign:
1770: intptr = &options->enable_ssh_keysign;
1771: goto parse_flag;
1772:
1.128 markus 1773: case oIdentitiesOnly:
1774: intptr = &options->identities_only;
1775: goto parse_flag;
1776:
1.127 markus 1777: case oServerAliveInterval:
1778: intptr = &options->server_alive_interval;
1779: goto parse_time;
1780:
1781: case oServerAliveCountMax:
1782: intptr = &options->server_alive_count_max;
1783: goto parse_int;
1784:
1.130 djm 1785: case oSendEnv:
1.356 djm 1786: while ((arg = argv_next(&ac, &av)) != NULL) {
1787: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1788: error("%s line %d: Invalid environment name.",
1.130 djm 1789: filename, linenum);
1.356 djm 1790: goto out;
1.344 djm 1791: }
1.137 djm 1792: if (!*activep)
1793: continue;
1.286 djm 1794: if (*arg == '-') {
1795: /* Removing an env var */
1796: rm_env(options, arg, filename, linenum);
1797: continue;
1798: }
1.368 djm 1799: opt_array_append(filename, linenum,
1800: lookup_opcode_name(opcode),
1801: &options->send_env, &options->num_send_env, arg);
1.130 djm 1802: }
1803: break;
1804:
1.290 djm 1805: case oSetEnv:
1806: value = options->num_setenv;
1.356 djm 1807: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1808: if (strchr(arg, '=') == NULL) {
1809: error("%s line %d: Invalid SetEnv.",
1.290 djm 1810: filename, linenum);
1.356 djm 1811: goto out;
1.344 djm 1812: }
1.290 djm 1813: if (!*activep || value != 0)
1814: continue;
1.368 djm 1815: if (lookup_setenv_in_list(arg, options->setenv,
1816: options->num_setenv) != NULL) {
1817: debug2("%s line %d: ignoring duplicate env "
1818: "name \"%.64s\"", filename, linenum, arg);
1819: continue;
1.344 djm 1820: }
1.368 djm 1821: opt_array_append(filename, linenum,
1822: lookup_opcode_name(opcode),
1823: &options->setenv, &options->num_setenv, arg);
1.290 djm 1824: }
1825: break;
1826:
1.132 djm 1827: case oControlPath:
1828: charptr = &options->control_path;
1829: goto parse_string;
1830:
1831: case oControlMaster:
1832: intptr = &options->control_master;
1.207 djm 1833: multistate_ptr = multistate_controlmaster;
1834: goto parse_multistate;
1.132 djm 1835:
1.187 djm 1836: case oControlPersist:
1837: /* no/false/yes/true, or a time spec */
1838: intptr = &options->control_persist;
1.356 djm 1839: arg = argv_next(&ac, &av);
1.344 djm 1840: if (!arg || *arg == '\0') {
1841: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1842: " argument.", filename, linenum);
1.356 djm 1843: goto out;
1.344 djm 1844: }
1.187 djm 1845: value = 0;
1846: value2 = 0; /* timeout */
1847: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1848: value = 0;
1849: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1850: value = 1;
1851: else if ((value2 = convtime(arg)) >= 0)
1852: value = 1;
1.344 djm 1853: else {
1854: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1855: filename, linenum);
1.356 djm 1856: goto out;
1.344 djm 1857: }
1.187 djm 1858: if (*activep && *intptr == -1) {
1859: *intptr = value;
1860: options->control_persist_timeout = value2;
1861: }
1862: break;
1863:
1.136 djm 1864: case oHashKnownHosts:
1865: intptr = &options->hash_known_hosts;
1866: goto parse_flag;
1867:
1.144 reyk 1868: case oTunnel:
1869: intptr = &options->tun_open;
1.207 djm 1870: multistate_ptr = multistate_tunnel;
1871: goto parse_multistate;
1.144 reyk 1872:
1873: case oTunnelDevice:
1.356 djm 1874: arg = argv_next(&ac, &av);
1.344 djm 1875: if (!arg || *arg == '\0') {
1876: error("%.200s line %d: Missing argument.",
1877: filename, linenum);
1.356 djm 1878: goto out;
1.344 djm 1879: }
1.144 reyk 1880: value = a2tun(arg, &value2);
1.344 djm 1881: if (value == SSH_TUNID_ERR) {
1882: error("%.200s line %d: Bad tun device.",
1883: filename, linenum);
1.356 djm 1884: goto out;
1.344 djm 1885: }
1.355 dtucker 1886: if (*activep && options->tun_local == -1) {
1.144 reyk 1887: options->tun_local = value;
1888: options->tun_remote = value2;
1889: }
1890: break;
1891:
1892: case oLocalCommand:
1893: charptr = &options->local_command;
1894: goto parse_command;
1895:
1896: case oPermitLocalCommand:
1897: intptr = &options->permit_local_command;
1898: goto parse_flag;
1899:
1.277 bluhm 1900: case oRemoteCommand:
1901: charptr = &options->remote_command;
1902: goto parse_command;
1903:
1.167 grunk 1904: case oVisualHostKey:
1905: intptr = &options->visual_host_key;
1906: goto parse_flag;
1907:
1.252 djm 1908: case oInclude:
1.344 djm 1909: if (cmdline) {
1910: error("Include directive not supported as a "
1.252 djm 1911: "command-line option");
1.356 djm 1912: goto out;
1.344 djm 1913: }
1.252 djm 1914: value = 0;
1.356 djm 1915: while ((arg = argv_next(&ac, &av)) != NULL) {
1916: if (*arg == '\0') {
1917: error("%s line %d: keyword %s empty argument",
1918: filename, linenum, keyword);
1919: goto out;
1920: }
1.252 djm 1921: /*
1922: * Ensure all paths are anchored. User configuration
1923: * files may begin with '~/' but system configurations
1924: * must not. If the path is relative, then treat it
1925: * as living in ~/.ssh for user configurations or
1926: * /etc/ssh for system ones.
1927: */
1.344 djm 1928: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1929: error("%.200s line %d: bad include path %s.",
1.252 djm 1930: filename, linenum, arg);
1.356 djm 1931: goto out;
1.344 djm 1932: }
1.301 djm 1933: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1934: xasprintf(&arg2, "%s/%s",
1935: (flags & SSHCONF_USERCONF) ?
1936: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1937: } else
1938: arg2 = xstrdup(arg);
1939: memset(&gl, 0, sizeof(gl));
1940: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1941: if (r == GLOB_NOMATCH) {
1942: debug("%.200s line %d: include %s matched no "
1943: "files",filename, linenum, arg2);
1.269 dtucker 1944: free(arg2);
1.252 djm 1945: continue;
1.344 djm 1946: } else if (r != 0) {
1947: error("%.200s line %d: glob failed for %s.",
1.252 djm 1948: filename, linenum, arg2);
1.356 djm 1949: goto out;
1.344 djm 1950: }
1.252 djm 1951: free(arg2);
1952: oactive = *activep;
1.313 deraadt 1953: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1954: debug3("%.200s line %d: Including file %s "
1955: "depth %d%s", filename, linenum,
1956: gl.gl_pathv[i], depth,
1957: oactive ? "" : " (parse only)");
1958: r = read_config_file_depth(gl.gl_pathv[i],
1959: pw, host, original_host, options,
1960: flags | SSHCONF_CHECKPERM |
1961: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1962: activep, want_final_pass, depth + 1);
1.264 djm 1963: if (r != 1 && errno != ENOENT) {
1.344 djm 1964: error("Can't open user config file "
1.263 djm 1965: "%.100s: %.100s", gl.gl_pathv[i],
1966: strerror(errno));
1.344 djm 1967: globfree(&gl);
1.356 djm 1968: goto out;
1.263 djm 1969: }
1.252 djm 1970: /*
1971: * don't let Match in includes clobber the
1972: * containing file's Match state.
1973: */
1974: *activep = oactive;
1975: if (r != 1)
1976: value = -1;
1977: }
1978: globfree(&gl);
1979: }
1980: if (value != 0)
1.356 djm 1981: ret = value;
1.252 djm 1982: break;
1983:
1.190 djm 1984: case oIPQoS:
1.356 djm 1985: arg = argv_next(&ac, &av);
1.344 djm 1986: if ((value = parse_ipqos(arg)) == -1) {
1987: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1988: filename, linenum, arg);
1.356 djm 1989: goto out;
1.344 djm 1990: }
1.356 djm 1991: arg = argv_next(&ac, &av);
1.190 djm 1992: if (arg == NULL)
1993: value2 = value;
1.344 djm 1994: else if ((value2 = parse_ipqos(arg)) == -1) {
1995: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 1996: filename, linenum, arg);
1.356 djm 1997: goto out;
1.344 djm 1998: }
1.355 dtucker 1999: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 2000: options->ip_qos_interactive = value;
2001: options->ip_qos_bulk = value2;
2002: }
2003: break;
2004:
1.192 djm 2005: case oRequestTTY:
2006: intptr = &options->request_tty;
1.207 djm 2007: multistate_ptr = multistate_requesttty;
2008: goto parse_multistate;
1.192 djm 2009:
1.359 djm 2010: case oSessionType:
2011: intptr = &options->session_type;
2012: multistate_ptr = multistate_sessiontype;
2013: goto parse_multistate;
2014:
1.360 djm 2015: case oStdinNull:
2016: intptr = &options->stdin_null;
2017: goto parse_flag;
2018:
1.361 djm 2019: case oForkAfterAuthentication:
2020: intptr = &options->fork_after_authentication;
2021: goto parse_flag;
2022:
1.199 djm 2023: case oIgnoreUnknown:
2024: charptr = &options->ignored_unknown;
2025: goto parse_string;
2026:
1.205 djm 2027: case oProxyUseFdpass:
2028: intptr = &options->proxy_use_fdpass;
2029: goto parse_flag;
2030:
1.208 djm 2031: case oCanonicalDomains:
2032: value = options->num_canonical_domains != 0;
1.356 djm 2033: i = 0;
2034: while ((arg = argv_next(&ac, &av)) != NULL) {
2035: if (*arg == '\0') {
2036: error("%s line %d: keyword %s empty argument",
2037: filename, linenum, keyword);
2038: goto out;
2039: }
2040: /* Allow "none" only in first position */
2041: if (strcasecmp(arg, "none") == 0) {
2042: if (i > 0 || ac > 0) {
2043: error("%s line %d: keyword %s \"none\" "
2044: "argument must appear alone.",
2045: filename, linenum, keyword);
2046: goto out;
2047: }
2048: }
2049: i++;
1.280 millert 2050: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 2051: error("%s line %d: %s", filename, linenum,
1.280 millert 2052: errstr);
1.356 djm 2053: goto out;
1.280 millert 2054: }
1.208 djm 2055: if (!*activep || value)
2056: continue;
1.344 djm 2057: if (options->num_canonical_domains >=
2058: MAX_CANON_DOMAINS) {
2059: error("%s line %d: too many hostname suffixes.",
1.208 djm 2060: filename, linenum);
1.356 djm 2061: goto out;
1.344 djm 2062: }
1.208 djm 2063: options->canonical_domains[
2064: options->num_canonical_domains++] = xstrdup(arg);
2065: }
2066: break;
2067:
1.209 djm 2068: case oCanonicalizePermittedCNAMEs:
1.208 djm 2069: value = options->num_permitted_cnames != 0;
1.362 djm 2070: i = 0;
1.356 djm 2071: while ((arg = argv_next(&ac, &av)) != NULL) {
1.362 djm 2072: /*
2073: * Either 'none' (only in first position), '*' for
2074: * everything or 'list:list'
2075: */
2076: if (strcasecmp(arg, "none") == 0) {
2077: if (i > 0 || ac > 0) {
2078: error("%s line %d: keyword %s \"none\" "
2079: "argument must appear alone.",
2080: filename, linenum, keyword);
2081: goto out;
2082: }
2083: arg2 = "";
2084: } else if (strcmp(arg, "*") == 0) {
1.208 djm 2085: arg2 = arg;
1.362 djm 2086: } else {
1.208 djm 2087: lowercase(arg);
2088: if ((arg2 = strchr(arg, ':')) == NULL ||
2089: arg2[1] == '\0') {
1.344 djm 2090: error("%s line %d: "
1.208 djm 2091: "Invalid permitted CNAME \"%s\"",
2092: filename, linenum, arg);
1.356 djm 2093: goto out;
1.208 djm 2094: }
2095: *arg2 = '\0';
2096: arg2++;
2097: }
1.362 djm 2098: i++;
1.208 djm 2099: if (!*activep || value)
2100: continue;
1.344 djm 2101: if (options->num_permitted_cnames >=
2102: MAX_CANON_DOMAINS) {
2103: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 2104: filename, linenum);
1.356 djm 2105: goto out;
1.344 djm 2106: }
1.208 djm 2107: cname = options->permitted_cnames +
2108: options->num_permitted_cnames++;
2109: cname->source_list = xstrdup(arg);
2110: cname->target_list = xstrdup(arg2);
2111: }
2112: break;
2113:
1.209 djm 2114: case oCanonicalizeHostname:
2115: intptr = &options->canonicalize_hostname;
2116: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2117: goto parse_multistate;
2118:
1.209 djm 2119: case oCanonicalizeMaxDots:
2120: intptr = &options->canonicalize_max_dots;
1.208 djm 2121: goto parse_int;
2122:
1.209 djm 2123: case oCanonicalizeFallbackLocal:
2124: intptr = &options->canonicalize_fallback_local;
1.208 djm 2125: goto parse_flag;
2126:
1.220 millert 2127: case oStreamLocalBindMask:
1.356 djm 2128: arg = argv_next(&ac, &av);
1.344 djm 2129: if (!arg || *arg == '\0') {
2130: error("%.200s line %d: Missing StreamLocalBindMask "
2131: "argument.", filename, linenum);
1.356 djm 2132: goto out;
1.344 djm 2133: }
1.220 millert 2134: /* Parse mode in octal format */
2135: value = strtol(arg, &endofnumber, 8);
1.344 djm 2136: if (arg == endofnumber || value < 0 || value > 0777) {
2137: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2138: goto out;
1.344 djm 2139: }
1.220 millert 2140: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2141: break;
2142:
2143: case oStreamLocalBindUnlink:
2144: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2145: goto parse_flag;
2146:
1.223 djm 2147: case oRevokedHostKeys:
2148: charptr = &options->revoked_host_keys;
2149: goto parse_string;
2150:
1.224 djm 2151: case oFingerprintHash:
1.225 djm 2152: intptr = &options->fingerprint_hash;
1.356 djm 2153: arg = argv_next(&ac, &av);
1.344 djm 2154: if (!arg || *arg == '\0') {
2155: error("%.200s line %d: Missing argument.",
1.224 djm 2156: filename, linenum);
1.356 djm 2157: goto out;
1.344 djm 2158: }
2159: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2160: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2161: filename, linenum, arg);
1.356 djm 2162: goto out;
1.344 djm 2163: }
1.225 djm 2164: if (*activep && *intptr == -1)
2165: *intptr = value;
1.224 djm 2166: break;
2167:
1.229 djm 2168: case oUpdateHostkeys:
2169: intptr = &options->update_hostkeys;
1.232 djm 2170: multistate_ptr = multistate_yesnoask;
2171: goto parse_multistate;
1.229 djm 2172:
1.350 dtucker 2173: case oHostbasedAcceptedAlgorithms:
2174: charptr = &options->hostbased_accepted_algos;
1.377 djm 2175: ca_only = 0;
1.349 dtucker 2176: goto parse_pubkey_algos;
1.238 markus 2177:
1.349 dtucker 2178: case oPubkeyAcceptedAlgorithms:
2179: charptr = &options->pubkey_accepted_algos;
1.377 djm 2180: ca_only = 0;
1.349 dtucker 2181: goto parse_pubkey_algos;
1.230 djm 2182:
1.246 jcs 2183: case oAddKeysToAgent:
1.356 djm 2184: arg = argv_next(&ac, &av);
2185: arg2 = argv_next(&ac, &av);
1.334 djm 2186: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2187: multistate_yesnoaskconfirm);
1.334 djm 2188: value2 = 0; /* unlimited lifespan by default */
2189: if (value == 3 && arg2 != NULL) {
2190: /* allow "AddKeysToAgent confirm 5m" */
1.375 dtucker 2191: if ((value2 = convtime(arg2)) == -1) {
1.344 djm 2192: error("%s line %d: invalid time value.",
1.334 djm 2193: filename, linenum);
1.356 djm 2194: goto out;
1.344 djm 2195: }
1.334 djm 2196: } else if (value == -1 && arg2 == NULL) {
1.375 dtucker 2197: if ((value2 = convtime(arg)) == -1) {
1.344 djm 2198: error("%s line %d: unsupported option",
1.334 djm 2199: filename, linenum);
1.356 djm 2200: goto out;
1.344 djm 2201: }
1.334 djm 2202: value = 1; /* yes */
2203: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2204: error("%s line %d: unsupported option",
1.334 djm 2205: filename, linenum);
1.356 djm 2206: goto out;
1.334 djm 2207: }
2208: if (*activep && options->add_keys_to_agent == -1) {
2209: options->add_keys_to_agent = value;
2210: options->add_keys_to_agent_lifespan = value2;
2211: }
2212: break;
1.246 jcs 2213:
1.253 markus 2214: case oIdentityAgent:
2215: charptr = &options->identity_agent;
1.356 djm 2216: arg = argv_next(&ac, &av);
1.344 djm 2217: if (!arg || *arg == '\0') {
2218: error("%.200s line %d: Missing argument.",
1.299 djm 2219: filename, linenum);
1.356 djm 2220: goto out;
1.344 djm 2221: }
1.319 djm 2222: parse_agent_path:
1.299 djm 2223: /* Extra validation if the string represents an env var. */
1.344 djm 2224: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2225: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2226: "%s.", filename, linenum, arg);
1.356 djm 2227: goto out;
1.344 djm 2228: }
1.331 dtucker 2229: free(arg2);
2230: /* check for legacy environment format */
1.344 djm 2231: if (arg[0] == '$' && arg[1] != '{' &&
2232: !valid_env_name(arg + 1)) {
2233: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2234: filename, linenum, arg);
1.356 djm 2235: goto out;
1.299 djm 2236: }
2237: if (*activep && *charptr == NULL)
2238: *charptr = xstrdup(arg);
2239: break;
1.253 markus 2240:
1.370 djm 2241: case oEnableEscapeCommandline:
2242: intptr = &options->enable_escape_commandline;
2243: goto parse_flag;
2244:
1.369 djm 2245: case oRequiredRSASize:
2246: intptr = &options->required_rsa_size;
2247: goto parse_int;
2248:
1.96 markus 2249: case oDeprecated:
1.98 markus 2250: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2251: filename, linenum, keyword);
1.356 djm 2252: argv_consume(&ac);
2253: break;
1.96 markus 2254:
1.110 jakob 2255: case oUnsupported:
2256: error("%s line %d: Unsupported option \"%s\"",
2257: filename, linenum, keyword);
1.356 djm 2258: argv_consume(&ac);
2259: break;
1.110 jakob 2260:
1.17 markus 2261: default:
1.344 djm 2262: error("%s line %d: Unimplemented opcode %d",
2263: filename, linenum, opcode);
1.356 djm 2264: goto out;
1.17 markus 2265: }
2266:
2267: /* Check that there is no garbage at end of line. */
1.356 djm 2268: if (ac > 0) {
2269: error("%.200s line %d: keyword %s extra arguments "
2270: "at end of line", filename, linenum, keyword);
2271: goto out;
1.39 ho 2272: }
1.356 djm 2273:
2274: /* success */
2275: ret = 0;
2276: out:
2277: argv_free(oav, oac);
2278: return ret;
1.1 deraadt 2279: }
2280:
1.19 markus 2281: /*
2282: * Reads the config file and modifies the options accordingly. Options
2283: * should already be initialized before this call. This never returns if
1.89 stevesk 2284: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2285: */
1.89 stevesk 2286: int
1.206 djm 2287: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2288: const char *original_host, Options *options, int flags,
2289: int *want_final_pass)
1.1 deraadt 2290: {
1.252 djm 2291: int active = 1;
2292:
2293: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2294: options, flags, &active, want_final_pass, 0);
1.252 djm 2295: }
2296:
2297: #define READCONF_MAX_DEPTH 16
2298: static int
2299: read_config_file_depth(const char *filename, struct passwd *pw,
2300: const char *host, const char *original_host, Options *options,
1.302 djm 2301: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2302: {
1.17 markus 2303: FILE *f;
1.356 djm 2304: char *line = NULL;
1.289 markus 2305: size_t linesize = 0;
1.252 djm 2306: int linenum;
1.17 markus 2307: int bad_options = 0;
2308:
1.252 djm 2309: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2310: fatal("Too many recursive configuration includes");
2311:
1.129 djm 2312: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2313: return 0;
1.129 djm 2314:
1.196 dtucker 2315: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2316: struct stat sb;
1.134 deraadt 2317:
1.131 dtucker 2318: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2319: fatal("fstat %s: %s", filename, strerror(errno));
2320: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2321: (sb.st_mode & 022) != 0))
1.129 djm 2322: fatal("Bad owner or permissions on %s", filename);
2323: }
1.17 markus 2324:
2325: debug("Reading configuration data %.200s", filename);
2326:
1.19 markus 2327: /*
2328: * Mark that we are now processing the options. This flag is turned
2329: * on/off by Host specifications.
2330: */
1.17 markus 2331: linenum = 0;
1.289 markus 2332: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2333: /* Update line number counter. */
2334: linenum++;
1.343 dtucker 2335: /*
2336: * Trim out comments and strip whitespace.
2337: * NB - preserve newlines, they are needed to reproduce
2338: * line numbers later for error messages.
2339: */
1.252 djm 2340: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2341: line, filename, linenum, activep, flags, want_final_pass,
2342: depth) != 0)
1.17 markus 2343: bad_options++;
2344: }
1.289 markus 2345: free(line);
1.17 markus 2346: fclose(f);
2347: if (bad_options > 0)
1.64 millert 2348: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2349: filename, bad_options);
1.89 stevesk 2350: return 1;
1.1 deraadt 2351: }
2352:
1.218 djm 2353: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2354: int
2355: option_clear_or_none(const char *o)
2356: {
2357: return o == NULL || strcasecmp(o, "none") == 0;
2358: }
2359:
1.19 markus 2360: /*
1.362 djm 2361: * Returns 1 if CanonicalizePermittedCNAMEs have been specified, 0 otherwise.
2362: * Allowed to be called on non-final configuration.
2363: */
2364: int
2365: config_has_permitted_cnames(Options *options)
2366: {
2367: if (options->num_permitted_cnames == 1 &&
2368: strcasecmp(options->permitted_cnames[0].source_list, "none") == 0 &&
2369: strcmp(options->permitted_cnames[0].target_list, "") == 0)
2370: return 0;
2371: return options->num_permitted_cnames > 0;
2372: }
2373:
2374: /*
1.19 markus 2375: * Initializes options to special values that indicate that they have not yet
2376: * been set. Read_config_file will only set options with this value. Options
2377: * are processed in the following order: command line, user config file,
2378: * system config file. Last, fill_default_options is called.
2379: */
1.1 deraadt 2380:
1.26 markus 2381: void
1.17 markus 2382: initialize_options(Options * options)
1.1 deraadt 2383: {
1.17 markus 2384: memset(options, 'X', sizeof(*options));
1.372 dtucker 2385: options->host_arg = NULL;
1.17 markus 2386: options->forward_agent = -1;
1.319 djm 2387: options->forward_agent_sock_path = NULL;
1.17 markus 2388: options->forward_x11 = -1;
1.123 markus 2389: options->forward_x11_trusted = -1;
1.186 djm 2390: options->forward_x11_timeout = -1;
1.255 dtucker 2391: options->stdio_forward_host = NULL;
2392: options->stdio_forward_port = 0;
1.256 dtucker 2393: options->clear_forwardings = -1;
1.153 markus 2394: options->exit_on_forward_failure = -1;
1.34 markus 2395: options->xauth_location = NULL;
1.220 millert 2396: options->fwd_opts.gateway_ports = -1;
2397: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2398: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2399: options->pubkey_authentication = -1;
1.118 markus 2400: options->gss_authentication = -1;
2401: options->gss_deleg_creds = -1;
1.17 markus 2402: options->password_authentication = -1;
1.48 markus 2403: options->kbd_interactive_authentication = -1;
2404: options->kbd_interactive_devices = NULL;
1.72 markus 2405: options->hostbased_authentication = -1;
1.17 markus 2406: options->batch_mode = -1;
2407: options->check_host_ip = -1;
2408: options->strict_host_key_checking = -1;
2409: options->compression = -1;
1.126 markus 2410: options->tcp_keep_alive = -1;
1.17 markus 2411: options->port = -1;
1.114 djm 2412: options->address_family = -1;
1.17 markus 2413: options->connection_attempts = -1;
1.111 djm 2414: options->connection_timeout = -1;
1.17 markus 2415: options->number_of_password_prompts = -1;
1.25 markus 2416: options->ciphers = NULL;
1.62 markus 2417: options->macs = NULL;
1.189 djm 2418: options->kex_algorithms = NULL;
1.76 markus 2419: options->hostkeyalgorithms = NULL;
1.298 djm 2420: options->ca_sign_algorithms = NULL;
1.17 markus 2421: options->num_identity_files = 0;
1.344 djm 2422: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2423: options->num_certificate_files = 0;
1.344 djm 2424: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2425: options->hostname = NULL;
1.52 markus 2426: options->host_key_alias = NULL;
1.17 markus 2427: options->proxy_command = NULL;
1.257 djm 2428: options->jump_user = NULL;
2429: options->jump_host = NULL;
2430: options->jump_port = -1;
2431: options->jump_extra = NULL;
1.17 markus 2432: options->user = NULL;
2433: options->escape_char = -1;
1.193 djm 2434: options->num_system_hostfiles = 0;
2435: options->num_user_hostfiles = 0;
1.185 djm 2436: options->local_forwards = NULL;
1.17 markus 2437: options->num_local_forwards = 0;
1.185 djm 2438: options->remote_forwards = NULL;
1.17 markus 2439: options->num_remote_forwards = 0;
1.351 markus 2440: options->permitted_remote_opens = NULL;
2441: options->num_permitted_remote_opens = 0;
1.271 dtucker 2442: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2443: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2444: options->num_log_verbose = 0;
2445: options->log_verbose = NULL;
1.67 markus 2446: options->preferred_authentications = NULL;
1.77 markus 2447: options->bind_address = NULL;
1.282 djm 2448: options->bind_interface = NULL;
1.183 markus 2449: options->pkcs11_provider = NULL;
1.310 djm 2450: options->sk_provider = NULL;
1.101 markus 2451: options->enable_ssh_keysign = - 1;
1.91 markus 2452: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2453: options->identities_only = - 1;
1.105 markus 2454: options->rekey_limit = - 1;
1.198 dtucker 2455: options->rekey_interval = -1;
1.107 jakob 2456: options->verify_host_key_dns = -1;
1.127 markus 2457: options->server_alive_interval = -1;
2458: options->server_alive_count_max = -1;
1.290 djm 2459: options->send_env = NULL;
1.130 djm 2460: options->num_send_env = 0;
1.290 djm 2461: options->setenv = NULL;
2462: options->num_setenv = 0;
1.132 djm 2463: options->control_path = NULL;
2464: options->control_master = -1;
1.187 djm 2465: options->control_persist = -1;
2466: options->control_persist_timeout = 0;
1.136 djm 2467: options->hash_known_hosts = -1;
1.144 reyk 2468: options->tun_open = -1;
2469: options->tun_local = -1;
2470: options->tun_remote = -1;
2471: options->local_command = NULL;
2472: options->permit_local_command = -1;
1.277 bluhm 2473: options->remote_command = NULL;
1.246 jcs 2474: options->add_keys_to_agent = -1;
1.334 djm 2475: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2476: options->identity_agent = NULL;
1.167 grunk 2477: options->visual_host_key = -1;
1.190 djm 2478: options->ip_qos_interactive = -1;
2479: options->ip_qos_bulk = -1;
1.192 djm 2480: options->request_tty = -1;
1.359 djm 2481: options->session_type = -1;
1.360 djm 2482: options->stdin_null = -1;
1.361 djm 2483: options->fork_after_authentication = -1;
1.205 djm 2484: options->proxy_use_fdpass = -1;
1.199 djm 2485: options->ignored_unknown = NULL;
1.208 djm 2486: options->num_canonical_domains = 0;
2487: options->num_permitted_cnames = 0;
1.209 djm 2488: options->canonicalize_max_dots = -1;
2489: options->canonicalize_fallback_local = -1;
2490: options->canonicalize_hostname = -1;
1.223 djm 2491: options->revoked_host_keys = NULL;
1.224 djm 2492: options->fingerprint_hash = -1;
1.229 djm 2493: options->update_hostkeys = -1;
1.350 dtucker 2494: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2495: options->pubkey_accepted_algos = NULL;
1.346 djm 2496: options->known_hosts_command = NULL;
1.369 djm 2497: options->required_rsa_size = -1;
1.370 djm 2498: options->enable_escape_commandline = -1;
1.1 deraadt 2499: }
2500:
1.19 markus 2501: /*
1.218 djm 2502: * A petite version of fill_default_options() that just fills the options
2503: * needed for hostname canonicalization to proceed.
2504: */
2505: void
2506: fill_default_options_for_canonicalization(Options *options)
2507: {
2508: if (options->canonicalize_max_dots == -1)
2509: options->canonicalize_max_dots = 1;
2510: if (options->canonicalize_fallback_local == -1)
2511: options->canonicalize_fallback_local = 1;
2512: if (options->canonicalize_hostname == -1)
2513: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2514: }
2515:
2516: /*
1.19 markus 2517: * Called after processing other sources of option data, this fills those
2518: * options for which no value has been specified with their default values.
2519: */
1.344 djm 2520: int
1.17 markus 2521: fill_default_options(Options * options)
1.1 deraadt 2522: {
1.298 djm 2523: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2524: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2525: int ret = 0, r;
1.292 djm 2526:
1.17 markus 2527: if (options->forward_agent == -1)
1.33 markus 2528: options->forward_agent = 0;
1.17 markus 2529: if (options->forward_x11 == -1)
1.23 markus 2530: options->forward_x11 = 0;
1.123 markus 2531: if (options->forward_x11_trusted == -1)
2532: options->forward_x11_trusted = 0;
1.186 djm 2533: if (options->forward_x11_timeout == -1)
2534: options->forward_x11_timeout = 1200;
1.256 dtucker 2535: /*
2536: * stdio forwarding (-W) changes the default for these but we defer
2537: * setting the values so they can be overridden.
2538: */
1.153 markus 2539: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2540: options->exit_on_forward_failure =
2541: options->stdio_forward_host != NULL ? 1 : 0;
2542: if (options->clear_forwardings == -1)
2543: options->clear_forwardings =
2544: options->stdio_forward_host != NULL ? 1 : 0;
2545: if (options->clear_forwardings == 1)
2546: clear_forwardings(options);
2547:
1.34 markus 2548: if (options->xauth_location == NULL)
1.344 djm 2549: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2550: if (options->fwd_opts.gateway_ports == -1)
2551: options->fwd_opts.gateway_ports = 0;
2552: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2553: options->fwd_opts.streamlocal_bind_mask = 0177;
2554: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2555: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2556: if (options->pubkey_authentication == -1)
1.364 djm 2557: options->pubkey_authentication = SSH_PUBKEY_AUTH_ALL;
1.118 markus 2558: if (options->gss_authentication == -1)
1.122 markus 2559: options->gss_authentication = 0;
1.118 markus 2560: if (options->gss_deleg_creds == -1)
2561: options->gss_deleg_creds = 0;
1.17 markus 2562: if (options->password_authentication == -1)
2563: options->password_authentication = 1;
1.48 markus 2564: if (options->kbd_interactive_authentication == -1)
1.59 markus 2565: options->kbd_interactive_authentication = 1;
1.72 markus 2566: if (options->hostbased_authentication == -1)
2567: options->hostbased_authentication = 0;
1.17 markus 2568: if (options->batch_mode == -1)
2569: options->batch_mode = 0;
2570: if (options->check_host_ip == -1)
1.348 djm 2571: options->check_host_ip = 0;
1.17 markus 2572: if (options->strict_host_key_checking == -1)
1.278 djm 2573: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2574: if (options->compression == -1)
2575: options->compression = 0;
1.126 markus 2576: if (options->tcp_keep_alive == -1)
2577: options->tcp_keep_alive = 1;
1.17 markus 2578: if (options->port == -1)
2579: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2580: if (options->address_family == -1)
2581: options->address_family = AF_UNSPEC;
1.17 markus 2582: if (options->connection_attempts == -1)
1.84 markus 2583: options->connection_attempts = 1;
1.17 markus 2584: if (options->number_of_password_prompts == -1)
2585: options->number_of_password_prompts = 3;
1.76 markus 2586: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2587: if (options->add_keys_to_agent == -1) {
1.246 jcs 2588: options->add_keys_to_agent = 0;
1.334 djm 2589: options->add_keys_to_agent_lifespan = 0;
2590: }
1.17 markus 2591: if (options->num_identity_files == 0) {
1.273 djm 2592: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2593: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2594: add_identity_file(options, "~/",
1.310 djm 2595: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2596: add_identity_file(options, "~/",
1.273 djm 2597: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2598: add_identity_file(options, "~/",
2599: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2600: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.365 dtucker 2601: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
1.27 markus 2602: }
1.17 markus 2603: if (options->escape_char == -1)
2604: options->escape_char = '~';
1.193 djm 2605: if (options->num_system_hostfiles == 0) {
2606: options->system_hostfiles[options->num_system_hostfiles++] =
2607: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2608: options->system_hostfiles[options->num_system_hostfiles++] =
2609: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2610: }
1.336 djm 2611: if (options->update_hostkeys == -1) {
1.338 djm 2612: if (options->verify_host_key_dns <= 0 &&
2613: (options->num_user_hostfiles == 0 ||
1.336 djm 2614: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2615: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2616: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2617: else
1.325 djm 2618: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2619: }
1.193 djm 2620: if (options->num_user_hostfiles == 0) {
2621: options->user_hostfiles[options->num_user_hostfiles++] =
2622: xstrdup(_PATH_SSH_USER_HOSTFILE);
2623: options->user_hostfiles[options->num_user_hostfiles++] =
2624: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2625: }
1.95 markus 2626: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2627: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2628: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2629: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2630: if (options->no_host_authentication_for_localhost == - 1)
2631: options->no_host_authentication_for_localhost = 0;
1.128 markus 2632: if (options->identities_only == -1)
2633: options->identities_only = 0;
1.101 markus 2634: if (options->enable_ssh_keysign == -1)
2635: options->enable_ssh_keysign = 0;
1.105 markus 2636: if (options->rekey_limit == -1)
2637: options->rekey_limit = 0;
1.198 dtucker 2638: if (options->rekey_interval == -1)
2639: options->rekey_interval = 0;
1.107 jakob 2640: if (options->verify_host_key_dns == -1)
2641: options->verify_host_key_dns = 0;
1.127 markus 2642: if (options->server_alive_interval == -1)
2643: options->server_alive_interval = 0;
2644: if (options->server_alive_count_max == -1)
2645: options->server_alive_count_max = 3;
1.132 djm 2646: if (options->control_master == -1)
2647: options->control_master = 0;
1.187 djm 2648: if (options->control_persist == -1) {
2649: options->control_persist = 0;
2650: options->control_persist_timeout = 0;
2651: }
1.136 djm 2652: if (options->hash_known_hosts == -1)
2653: options->hash_known_hosts = 0;
1.144 reyk 2654: if (options->tun_open == -1)
1.145 reyk 2655: options->tun_open = SSH_TUNMODE_NO;
2656: if (options->tun_local == -1)
2657: options->tun_local = SSH_TUNID_ANY;
2658: if (options->tun_remote == -1)
2659: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2660: if (options->permit_local_command == -1)
2661: options->permit_local_command = 0;
1.167 grunk 2662: if (options->visual_host_key == -1)
2663: options->visual_host_key = 0;
1.190 djm 2664: if (options->ip_qos_interactive == -1)
1.284 job 2665: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2666: if (options->ip_qos_bulk == -1)
1.284 job 2667: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2668: if (options->request_tty == -1)
2669: options->request_tty = REQUEST_TTY_AUTO;
1.359 djm 2670: if (options->session_type == -1)
2671: options->session_type = SESSION_TYPE_DEFAULT;
1.360 djm 2672: if (options->stdin_null == -1)
2673: options->stdin_null = 0;
1.361 djm 2674: if (options->fork_after_authentication == -1)
2675: options->fork_after_authentication = 0;
1.205 djm 2676: if (options->proxy_use_fdpass == -1)
2677: options->proxy_use_fdpass = 0;
1.209 djm 2678: if (options->canonicalize_max_dots == -1)
2679: options->canonicalize_max_dots = 1;
2680: if (options->canonicalize_fallback_local == -1)
2681: options->canonicalize_fallback_local = 1;
2682: if (options->canonicalize_hostname == -1)
2683: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2684: if (options->fingerprint_hash == -1)
2685: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2686: if (options->sk_provider == NULL)
1.314 djm 2687: options->sk_provider = xstrdup("internal");
1.369 djm 2688: if (options->required_rsa_size == -1)
2689: options->required_rsa_size = SSH_RSA_MINIMUM_MODULUS_SIZE;
1.370 djm 2690: if (options->enable_escape_commandline == -1)
2691: options->enable_escape_commandline = 0;
1.292 djm 2692:
2693: /* Expand KEX name lists */
2694: all_cipher = cipher_alg_list(',', 0);
2695: all_mac = mac_alg_list(',');
2696: all_kex = kex_alg_list(',');
2697: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2698: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2699: /* remove unsupported algos from default lists */
1.332 djm 2700: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2701: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2702: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2703: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2704: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2705: #define ASSEMBLE(what, defaults, all) \
2706: do { \
2707: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2708: defaults, all)) != 0) { \
2709: error_fr(r, "%s", #what); \
2710: goto fail; \
2711: } \
1.297 djm 2712: } while (0)
1.320 dtucker 2713: ASSEMBLE(ciphers, def_cipher, all_cipher);
2714: ASSEMBLE(macs, def_mac, all_mac);
2715: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2716: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2717: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2718: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2719: #undef ASSEMBLE
1.224 djm 2720:
1.207 djm 2721: #define CLEAR_ON_NONE(v) \
2722: do { \
1.218 djm 2723: if (option_clear_or_none(v)) { \
1.207 djm 2724: free(v); \
2725: v = NULL; \
2726: } \
2727: } while(0)
2728: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2729: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2730: CLEAR_ON_NONE(options->proxy_command);
2731: CLEAR_ON_NONE(options->control_path);
1.223 djm 2732: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2733: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2734: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2735: CLEAR_ON_NONE(options->known_hosts_command);
1.287 djm 2736: if (options->jump_host != NULL &&
2737: strcmp(options->jump_host, "none") == 0 &&
2738: options->jump_port == 0 && options->jump_user == NULL) {
2739: free(options->jump_host);
2740: options->jump_host = NULL;
2741: }
1.362 djm 2742: if (options->num_permitted_cnames == 1 &&
2743: !config_has_permitted_cnames(options)) {
2744: /* clean up CanonicalizePermittedCNAMEs=none */
2745: free(options->permitted_cnames[0].source_list);
2746: free(options->permitted_cnames[0].target_list);
2747: memset(options->permitted_cnames, '\0',
2748: sizeof(*options->permitted_cnames));
2749: options->num_permitted_cnames = 0;
2750: }
1.254 markus 2751: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2752: /* options->user will be set in the main program if appropriate */
2753: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2754: /* options->host_key_alias should not be set by default */
1.67 markus 2755: /* options->preferred_authentications will be set in ssh */
1.344 djm 2756:
2757: /* success */
2758: ret = 0;
2759: fail:
2760: free(all_cipher);
2761: free(all_mac);
2762: free(all_kex);
2763: free(all_key);
2764: free(all_sig);
2765: free(def_cipher);
2766: free(def_mac);
2767: free(def_kex);
2768: free(def_key);
2769: free(def_sig);
2770: return ret;
2771: }
2772:
2773: void
2774: free_options(Options *o)
2775: {
2776: int i;
2777:
2778: if (o == NULL)
2779: return;
2780:
2781: #define FREE_ARRAY(type, n, a) \
2782: do { \
2783: type _i; \
2784: for (_i = 0; _i < (n); _i++) \
2785: free((a)[_i]); \
2786: } while (0)
2787:
2788: free(o->forward_agent_sock_path);
2789: free(o->xauth_location);
2790: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2791: free(o->log_verbose);
2792: free(o->ciphers);
2793: free(o->macs);
2794: free(o->hostkeyalgorithms);
2795: free(o->kex_algorithms);
2796: free(o->ca_sign_algorithms);
2797: free(o->hostname);
2798: free(o->host_key_alias);
2799: free(o->proxy_command);
2800: free(o->user);
2801: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2802: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2803: free(o->preferred_authentications);
2804: free(o->bind_address);
2805: free(o->bind_interface);
2806: free(o->pkcs11_provider);
2807: free(o->sk_provider);
2808: for (i = 0; i < o->num_identity_files; i++) {
2809: free(o->identity_files[i]);
2810: sshkey_free(o->identity_keys[i]);
2811: }
2812: for (i = 0; i < o->num_certificate_files; i++) {
2813: free(o->certificate_files[i]);
2814: sshkey_free(o->certificates[i]);
2815: }
2816: free(o->identity_agent);
2817: for (i = 0; i < o->num_local_forwards; i++) {
2818: free(o->local_forwards[i].listen_host);
2819: free(o->local_forwards[i].listen_path);
2820: free(o->local_forwards[i].connect_host);
2821: free(o->local_forwards[i].connect_path);
2822: }
2823: free(o->local_forwards);
2824: for (i = 0; i < o->num_remote_forwards; i++) {
2825: free(o->remote_forwards[i].listen_host);
2826: free(o->remote_forwards[i].listen_path);
2827: free(o->remote_forwards[i].connect_host);
2828: free(o->remote_forwards[i].connect_path);
2829: }
2830: free(o->remote_forwards);
2831: free(o->stdio_forward_host);
1.368 djm 2832: FREE_ARRAY(u_int, o->num_send_env, o->send_env);
1.344 djm 2833: free(o->send_env);
1.368 djm 2834: FREE_ARRAY(u_int, o->num_setenv, o->setenv);
1.344 djm 2835: free(o->setenv);
2836: free(o->control_path);
2837: free(o->local_command);
2838: free(o->remote_command);
2839: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2840: for (i = 0; i < o->num_permitted_cnames; i++) {
2841: free(o->permitted_cnames[i].source_list);
2842: free(o->permitted_cnames[i].target_list);
2843: }
2844: free(o->revoked_host_keys);
1.350 dtucker 2845: free(o->hostbased_accepted_algos);
1.349 dtucker 2846: free(o->pubkey_accepted_algos);
1.344 djm 2847: free(o->jump_user);
2848: free(o->jump_host);
2849: free(o->jump_extra);
2850: free(o->ignored_unknown);
2851: explicit_bzero(o, sizeof(*o));
2852: #undef FREE_ARRAY
1.135 djm 2853: }
2854:
1.220 millert 2855: struct fwdarg {
2856: char *arg;
2857: int ispath;
2858: };
2859:
2860: /*
2861: * parse_fwd_field
2862: * parses the next field in a port forwarding specification.
2863: * sets fwd to the parsed field and advances p past the colon
2864: * or sets it to NULL at end of string.
2865: * returns 0 on success, else non-zero.
2866: */
2867: static int
2868: parse_fwd_field(char **p, struct fwdarg *fwd)
2869: {
2870: char *ep, *cp = *p;
2871: int ispath = 0;
2872:
2873: if (*cp == '\0') {
2874: *p = NULL;
2875: return -1; /* end of string */
2876: }
2877:
2878: /*
2879: * A field escaped with square brackets is used literally.
2880: * XXX - allow ']' to be escaped via backslash?
2881: */
2882: if (*cp == '[') {
2883: /* find matching ']' */
2884: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2885: if (*ep == '/')
2886: ispath = 1;
2887: }
2888: /* no matching ']' or not at end of field. */
2889: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2890: return -1;
2891: /* NUL terminate the field and advance p past the colon */
2892: *ep++ = '\0';
2893: if (*ep != '\0')
2894: *ep++ = '\0';
2895: fwd->arg = cp + 1;
2896: fwd->ispath = ispath;
2897: *p = ep;
2898: return 0;
2899: }
2900:
2901: for (cp = *p; *cp != '\0'; cp++) {
2902: switch (*cp) {
2903: case '\\':
2904: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2905: if (*cp == '\0')
2906: return -1;
1.220 millert 2907: break;
2908: case '/':
2909: ispath = 1;
2910: break;
2911: case ':':
2912: *cp++ = '\0';
2913: goto done;
2914: }
2915: }
2916: done:
2917: fwd->arg = *p;
2918: fwd->ispath = ispath;
2919: *p = cp;
2920: return 0;
2921: }
2922:
1.135 djm 2923: /*
2924: * parse_forward
2925: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2926: * dynamicfwd == 0
1.220 millert 2927: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2928: * listenpath:connectpath
1.168 stevesk 2929: * dynamicfwd == 1
2930: * [listenhost:]listenport
1.135 djm 2931: * returns number of arguments parsed or zero on error
2932: */
2933: int
1.220 millert 2934: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2935: {
1.220 millert 2936: struct fwdarg fwdargs[4];
2937: char *p, *cp;
1.331 dtucker 2938: int i, err;
1.135 djm 2939:
1.220 millert 2940: memset(fwd, 0, sizeof(*fwd));
2941: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2942:
1.331 dtucker 2943: /*
2944: * We expand environment variables before checking if we think they're
2945: * paths so that if ${VAR} expands to a fully qualified path it is
2946: * treated as a path.
2947: */
2948: cp = p = dollar_expand(&err, fwdspec);
2949: if (p == NULL || err)
2950: return 0;
1.135 djm 2951:
2952: /* skip leading spaces */
1.214 deraadt 2953: while (isspace((u_char)*cp))
1.135 djm 2954: cp++;
2955:
1.220 millert 2956: for (i = 0; i < 4; ++i) {
2957: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2958: break;
1.220 millert 2959: }
1.135 djm 2960:
1.170 stevesk 2961: /* Check for trailing garbage */
1.220 millert 2962: if (cp != NULL && *cp != '\0') {
1.135 djm 2963: i = 0; /* failure */
1.220 millert 2964: }
1.135 djm 2965:
2966: switch (i) {
1.168 stevesk 2967: case 1:
1.220 millert 2968: if (fwdargs[0].ispath) {
2969: fwd->listen_path = xstrdup(fwdargs[0].arg);
2970: fwd->listen_port = PORT_STREAMLOCAL;
2971: } else {
2972: fwd->listen_host = NULL;
2973: fwd->listen_port = a2port(fwdargs[0].arg);
2974: }
1.168 stevesk 2975: fwd->connect_host = xstrdup("socks");
2976: break;
2977:
2978: case 2:
1.220 millert 2979: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2980: fwd->listen_path = xstrdup(fwdargs[0].arg);
2981: fwd->listen_port = PORT_STREAMLOCAL;
2982: fwd->connect_path = xstrdup(fwdargs[1].arg);
2983: fwd->connect_port = PORT_STREAMLOCAL;
2984: } else if (fwdargs[1].ispath) {
2985: fwd->listen_host = NULL;
2986: fwd->listen_port = a2port(fwdargs[0].arg);
2987: fwd->connect_path = xstrdup(fwdargs[1].arg);
2988: fwd->connect_port = PORT_STREAMLOCAL;
2989: } else {
2990: fwd->listen_host = xstrdup(fwdargs[0].arg);
2991: fwd->listen_port = a2port(fwdargs[1].arg);
2992: fwd->connect_host = xstrdup("socks");
2993: }
1.168 stevesk 2994: break;
2995:
1.135 djm 2996: case 3:
1.220 millert 2997: if (fwdargs[0].ispath) {
2998: fwd->listen_path = xstrdup(fwdargs[0].arg);
2999: fwd->listen_port = PORT_STREAMLOCAL;
3000: fwd->connect_host = xstrdup(fwdargs[1].arg);
3001: fwd->connect_port = a2port(fwdargs[2].arg);
3002: } else if (fwdargs[2].ispath) {
3003: fwd->listen_host = xstrdup(fwdargs[0].arg);
3004: fwd->listen_port = a2port(fwdargs[1].arg);
3005: fwd->connect_path = xstrdup(fwdargs[2].arg);
3006: fwd->connect_port = PORT_STREAMLOCAL;
3007: } else {
3008: fwd->listen_host = NULL;
3009: fwd->listen_port = a2port(fwdargs[0].arg);
3010: fwd->connect_host = xstrdup(fwdargs[1].arg);
3011: fwd->connect_port = a2port(fwdargs[2].arg);
3012: }
1.135 djm 3013: break;
3014:
3015: case 4:
1.220 millert 3016: fwd->listen_host = xstrdup(fwdargs[0].arg);
3017: fwd->listen_port = a2port(fwdargs[1].arg);
3018: fwd->connect_host = xstrdup(fwdargs[2].arg);
3019: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 3020: break;
3021: default:
3022: i = 0; /* failure */
3023: }
3024:
1.202 djm 3025: free(p);
1.135 djm 3026:
1.168 stevesk 3027: if (dynamicfwd) {
3028: if (!(i == 1 || i == 2))
3029: goto fail_free;
3030: } else {
1.220 millert 3031: if (!(i == 3 || i == 4)) {
3032: if (fwd->connect_path == NULL &&
3033: fwd->listen_path == NULL)
3034: goto fail_free;
3035: }
3036: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 3037: goto fail_free;
3038: }
3039:
1.220 millert 3040: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
3041: (!remotefwd && fwd->listen_port == 0))
1.135 djm 3042: goto fail_free;
3043: if (fwd->connect_host != NULL &&
3044: strlen(fwd->connect_host) >= NI_MAXHOST)
3045: goto fail_free;
1.356 djm 3046: /*
3047: * XXX - if connecting to a remote socket, max sun len may not
3048: * match this host
3049: */
1.220 millert 3050: if (fwd->connect_path != NULL &&
3051: strlen(fwd->connect_path) >= PATH_MAX_SUN)
3052: goto fail_free;
1.176 djm 3053: if (fwd->listen_host != NULL &&
3054: strlen(fwd->listen_host) >= NI_MAXHOST)
3055: goto fail_free;
1.220 millert 3056: if (fwd->listen_path != NULL &&
3057: strlen(fwd->listen_path) >= PATH_MAX_SUN)
3058: goto fail_free;
1.135 djm 3059:
3060: return (i);
3061:
3062: fail_free:
1.202 djm 3063: free(fwd->connect_host);
3064: fwd->connect_host = NULL;
1.220 millert 3065: free(fwd->connect_path);
3066: fwd->connect_path = NULL;
1.202 djm 3067: free(fwd->listen_host);
3068: fwd->listen_host = NULL;
1.220 millert 3069: free(fwd->listen_path);
3070: fwd->listen_path = NULL;
1.135 djm 3071: return (0);
1.221 djm 3072: }
3073:
1.257 djm 3074: int
3075: parse_jump(const char *s, Options *o, int active)
3076: {
3077: char *orig, *sdup, *cp;
3078: char *host = NULL, *user = NULL;
1.345 djm 3079: int r, ret = -1, port = -1, first;
1.257 djm 3080:
3081: active &= o->proxy_command == NULL && o->jump_host == NULL;
3082:
3083: orig = sdup = xstrdup(s);
1.356 djm 3084:
3085: /* Remove comment and trailing whitespace */
3086: if ((cp = strchr(orig, '#')) != NULL)
3087: *cp = '\0';
3088: rtrim(orig);
3089:
1.258 naddy 3090: first = active;
1.259 djm 3091: do {
1.287 djm 3092: if (strcasecmp(s, "none") == 0)
3093: break;
1.259 djm 3094: if ((cp = strrchr(sdup, ',')) == NULL)
3095: cp = sdup; /* last */
3096: else
3097: *cp++ = '\0';
3098:
1.258 naddy 3099: if (first) {
1.257 djm 3100: /* First argument and configuration is active */
1.345 djm 3101: r = parse_ssh_uri(cp, &user, &host, &port);
3102: if (r == -1 || (r == 1 &&
3103: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 3104: goto out;
3105: } else {
3106: /* Subsequent argument or inactive configuration */
1.345 djm 3107: r = parse_ssh_uri(cp, NULL, NULL, NULL);
3108: if (r == -1 || (r == 1 &&
3109: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 3110: goto out;
3111: }
1.258 naddy 3112: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 3113: } while (cp != sdup);
1.257 djm 3114: /* success */
1.258 naddy 3115: if (active) {
1.287 djm 3116: if (strcasecmp(s, "none") == 0) {
3117: o->jump_host = xstrdup("none");
3118: o->jump_port = 0;
3119: } else {
3120: o->jump_user = user;
3121: o->jump_host = host;
3122: o->jump_port = port;
3123: o->proxy_command = xstrdup("none");
3124: user = host = NULL;
3125: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
3126: o->jump_extra = xstrdup(s);
3127: o->jump_extra[cp - s] = '\0';
3128: }
1.259 djm 3129: }
1.258 naddy 3130: }
1.257 djm 3131: ret = 0;
3132: out:
1.258 naddy 3133: free(orig);
1.257 djm 3134: free(user);
3135: free(host);
3136: return ret;
1.280 millert 3137: }
3138:
3139: int
3140: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
3141: {
1.344 djm 3142: char *user = NULL, *host = NULL, *path = NULL;
3143: int r, port;
1.280 millert 3144:
1.344 djm 3145: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 3146: if (r == 0 && path != NULL)
3147: r = -1; /* path not allowed */
1.344 djm 3148: if (r == 0) {
3149: if (userp != NULL) {
3150: *userp = user;
3151: user = NULL;
3152: }
3153: if (hostp != NULL) {
3154: *hostp = host;
3155: host = NULL;
3156: }
3157: if (portp != NULL)
3158: *portp = port;
3159: }
3160: free(user);
3161: free(host);
3162: free(path);
1.280 millert 3163: return r;
1.257 djm 3164: }
3165:
1.221 djm 3166: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3167: static const char *
3168: fmt_multistate_int(int val, const struct multistate *m)
3169: {
3170: u_int i;
3171:
3172: for (i = 0; m[i].key != NULL; i++) {
3173: if (m[i].value == val)
3174: return m[i].key;
3175: }
3176: return "UNKNOWN";
3177: }
3178:
3179: static const char *
3180: fmt_intarg(OpCodes code, int val)
3181: {
3182: if (val == -1)
3183: return "unset";
3184: switch (code) {
3185: case oAddressFamily:
3186: return fmt_multistate_int(val, multistate_addressfamily);
3187: case oVerifyHostKeyDNS:
1.232 djm 3188: case oUpdateHostkeys:
1.221 djm 3189: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3190: case oStrictHostKeyChecking:
3191: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3192: case oControlMaster:
3193: return fmt_multistate_int(val, multistate_controlmaster);
3194: case oTunnel:
3195: return fmt_multistate_int(val, multistate_tunnel);
3196: case oRequestTTY:
3197: return fmt_multistate_int(val, multistate_requesttty);
1.359 djm 3198: case oSessionType:
3199: return fmt_multistate_int(val, multistate_sessiontype);
1.221 djm 3200: case oCanonicalizeHostname:
3201: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3202: case oAddKeysToAgent:
3203: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.364 djm 3204: case oPubkeyAuthentication:
3205: return fmt_multistate_int(val, multistate_pubkey_auth);
1.224 djm 3206: case oFingerprintHash:
3207: return ssh_digest_alg_name(val);
1.221 djm 3208: default:
3209: switch (val) {
3210: case 0:
3211: return "no";
3212: case 1:
3213: return "yes";
3214: default:
3215: return "UNKNOWN";
3216: }
3217: }
3218: }
3219:
3220: static const char *
3221: lookup_opcode_name(OpCodes code)
3222: {
3223: u_int i;
3224:
3225: for (i = 0; keywords[i].name != NULL; i++)
3226: if (keywords[i].opcode == code)
3227: return(keywords[i].name);
3228: return "UNKNOWN";
3229: }
3230:
3231: static void
3232: dump_cfg_int(OpCodes code, int val)
3233: {
3234: printf("%s %d\n", lookup_opcode_name(code), val);
3235: }
3236:
3237: static void
3238: dump_cfg_fmtint(OpCodes code, int val)
3239: {
3240: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3241: }
3242:
3243: static void
3244: dump_cfg_string(OpCodes code, const char *val)
3245: {
3246: if (val == NULL)
3247: return;
3248: printf("%s %s\n", lookup_opcode_name(code), val);
3249: }
3250:
3251: static void
3252: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3253: {
3254: u_int i;
3255:
3256: for (i = 0; i < count; i++)
3257: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3258: }
3259:
3260: static void
3261: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3262: {
3263: u_int i;
3264:
3265: printf("%s", lookup_opcode_name(code));
1.356 djm 3266: if (count == 0)
3267: printf(" none");
1.221 djm 3268: for (i = 0; i < count; i++)
3269: printf(" %s", vals[i]);
3270: printf("\n");
3271: }
3272:
3273: static void
3274: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3275: {
3276: const struct Forward *fwd;
3277: u_int i;
3278:
3279: /* oDynamicForward */
3280: for (i = 0; i < count; i++) {
3281: fwd = &fwds[i];
1.265 djm 3282: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3283: strcmp(fwd->connect_host, "socks") != 0)
3284: continue;
1.265 djm 3285: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3286: strcmp(fwd->connect_host, "socks") == 0)
3287: continue;
3288: printf("%s", lookup_opcode_name(code));
3289: if (fwd->listen_port == PORT_STREAMLOCAL)
3290: printf(" %s", fwd->listen_path);
3291: else if (fwd->listen_host == NULL)
3292: printf(" %d", fwd->listen_port);
3293: else {
3294: printf(" [%s]:%d",
3295: fwd->listen_host, fwd->listen_port);
3296: }
3297: if (code != oDynamicForward) {
3298: if (fwd->connect_port == PORT_STREAMLOCAL)
3299: printf(" %s", fwd->connect_path);
3300: else if (fwd->connect_host == NULL)
3301: printf(" %d", fwd->connect_port);
3302: else {
3303: printf(" [%s]:%d",
3304: fwd->connect_host, fwd->connect_port);
3305: }
3306: }
3307: printf("\n");
3308: }
3309: }
3310:
3311: void
3312: dump_client_config(Options *o, const char *host)
3313: {
1.326 djm 3314: int i, r;
3315: char buf[8], *all_key;
3316:
3317: /*
3318: * Expand HostKeyAlgorithms name lists. This isn't handled in
3319: * fill_default_options() like the other algorithm lists because
3320: * the host key algorithms are by default dynamically chosen based
3321: * on the host's keys found in known_hosts.
3322: */
3323: all_key = sshkey_alg_list(0, 0, 1, ',');
3324: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3325: all_key)) != 0)
1.340 djm 3326: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3327: free(all_key);
1.240 djm 3328:
1.221 djm 3329: /* Most interesting options first: user, host, port */
1.372 dtucker 3330: dump_cfg_string(oHost, o->host_arg);
1.221 djm 3331: dump_cfg_string(oUser, o->user);
1.306 jmc 3332: dump_cfg_string(oHostname, host);
1.221 djm 3333: dump_cfg_int(oPort, o->port);
3334:
3335: /* Flag options */
3336: dump_cfg_fmtint(oAddressFamily, o->address_family);
3337: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3338: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3339: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3340: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3341: dump_cfg_fmtint(oCompression, o->compression);
3342: dump_cfg_fmtint(oControlMaster, o->control_master);
3343: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3344: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3345: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3346: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3347: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3348: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3349: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3350: #ifdef GSSAPI
3351: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3352: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3353: #endif /* GSSAPI */
3354: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3355: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3356: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3357: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3358: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3359: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3360: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3361: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3362: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3363: dump_cfg_fmtint(oRequestTTY, o->request_tty);
1.359 djm 3364: dump_cfg_fmtint(oSessionType, o->session_type);
1.360 djm 3365: dump_cfg_fmtint(oStdinNull, o->stdin_null);
1.361 djm 3366: dump_cfg_fmtint(oForkAfterAuthentication, o->fork_after_authentication);
1.221 djm 3367: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3368: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3369: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3370: dump_cfg_fmtint(oTunnel, o->tun_open);
3371: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3372: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3373: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.370 djm 3374: dump_cfg_fmtint(oEnableEscapeCommandline, o->enable_escape_commandline);
1.221 djm 3375:
3376: /* Integer options */
3377: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3378: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3379: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3380: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3381: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3382: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
1.369 djm 3383: dump_cfg_int(oRequiredRSASize, o->required_rsa_size);
1.221 djm 3384:
3385: /* String options */
3386: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3387: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3388: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3389: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3390: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3391: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3392: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3393: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3394: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3395: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3396: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3397: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3398: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3399: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3400: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3401: dump_cfg_string(oMacs, o->macs);
1.266 djm 3402: #ifdef ENABLE_PKCS11
1.221 djm 3403: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3404: #endif
1.310 djm 3405: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3406: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3407: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3408: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3409: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3410: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.221 djm 3411:
1.230 djm 3412: /* Forwards */
1.221 djm 3413: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3414: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3415: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3416:
3417: /* String array options */
3418: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3419: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3420: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3421: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3422: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3423: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3424: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3425: dump_cfg_strarray_oneline(oLogVerbose,
3426: o->num_log_verbose, o->log_verbose);
1.221 djm 3427:
3428: /* Special cases */
1.351 markus 3429:
3430: /* PermitRemoteOpen */
3431: if (o->num_permitted_remote_opens == 0)
3432: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3433: else
3434: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3435: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3436:
3437: /* AddKeysToAgent */
3438: if (o->add_keys_to_agent_lifespan <= 0)
3439: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3440: else {
3441: printf("addkeystoagent%s %d\n",
3442: o->add_keys_to_agent == 3 ? " confirm" : "",
3443: o->add_keys_to_agent_lifespan);
3444: }
1.319 djm 3445:
3446: /* oForwardAgent */
3447: if (o->forward_agent_sock_path == NULL)
3448: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3449: else
3450: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3451:
3452: /* oConnectTimeout */
3453: if (o->connection_timeout == -1)
3454: printf("connecttimeout none\n");
3455: else
3456: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3457:
3458: /* oTunnelDevice */
3459: printf("tunneldevice");
3460: if (o->tun_local == SSH_TUNID_ANY)
3461: printf(" any");
3462: else
3463: printf(" %d", o->tun_local);
3464: if (o->tun_remote == SSH_TUNID_ANY)
3465: printf(":any");
3466: else
3467: printf(":%d", o->tun_remote);
3468: printf("\n");
3469:
3470: /* oCanonicalizePermittedCNAMEs */
1.362 djm 3471: printf("canonicalizePermittedcnames");
3472: if (o->num_permitted_cnames == 0)
1.363 djm 3473: printf(" none");
1.362 djm 3474: for (i = 0; i < o->num_permitted_cnames; i++) {
3475: printf(" %s:%s", o->permitted_cnames[i].source_list,
3476: o->permitted_cnames[i].target_list);
1.221 djm 3477: }
1.362 djm 3478: printf("\n");
1.221 djm 3479:
3480: /* oControlPersist */
3481: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3482: dump_cfg_fmtint(oControlPersist, o->control_persist);
3483: else
3484: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3485:
3486: /* oEscapeChar */
3487: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3488: printf("escapechar none\n");
3489: else {
1.257 djm 3490: vis(buf, o->escape_char, VIS_WHITE, 0);
3491: printf("escapechar %s\n", buf);
1.221 djm 3492: }
3493:
3494: /* oIPQoS */
3495: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3496: printf("%s\n", iptos2str(o->ip_qos_bulk));
3497:
3498: /* oRekeyLimit */
1.249 dtucker 3499: printf("rekeylimit %llu %d\n",
3500: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3501:
3502: /* oStreamLocalBindMask */
3503: printf("streamlocalbindmask 0%o\n",
3504: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3505:
3506: /* oLogFacility */
3507: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3508:
3509: /* oProxyCommand / oProxyJump */
3510: if (o->jump_host == NULL)
3511: dump_cfg_string(oProxyCommand, o->proxy_command);
3512: else {
3513: /* Check for numeric addresses */
3514: i = strchr(o->jump_host, ':') != NULL ||
3515: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3516: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3517: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3518: /* optional additional jump spec */
3519: o->jump_extra == NULL ? "" : o->jump_extra,
3520: o->jump_extra == NULL ? "" : ",",
1.257 djm 3521: /* optional user */
3522: o->jump_user == NULL ? "" : o->jump_user,
3523: o->jump_user == NULL ? "" : "@",
3524: /* opening [ if hostname is numeric */
3525: i ? "[" : "",
3526: /* mandatory hostname */
3527: o->jump_host,
3528: /* closing ] if hostname is numeric */
3529: i ? "]" : "",
3530: /* optional port number */
3531: o->jump_port <= 0 ? "" : ":",
1.259 djm 3532: o->jump_port <= 0 ? "" : buf);
1.257 djm 3533: }
1.1 deraadt 3534: }
![[BACK]](/icons/back.gif){kind=icon}
Return to readconf.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh