Annotation of src/usr.bin/ssh/readconf.c, Revision 1.384
1.384 ! djm 1: /* $OpenBSD: readconf.c,v 1.383 2023/10/12 02:18:18 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,
1.379 djm 131: oHost, oMatch, oInclude, oTag,
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,
1.382 djm 165: oEnableEscapeCommandline, oObscureKeystrokeTiming, oChannelTimeout,
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 },
1.379 djm 244: { "tag", oTag },
1.17 markus 245: { "escapechar", oEscapeChar },
246: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 247: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 248: { "connectionattempts", oConnectionAttempts },
249: { "batchmode", oBatchMode },
250: { "checkhostip", oCheckHostIP },
251: { "stricthostkeychecking", oStrictHostKeyChecking },
252: { "compression", oCompression },
1.126 markus 253: { "tcpkeepalive", oTCPKeepAlive },
254: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 255: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 256: { "syslogfacility", oLogFacility },
1.17 markus 257: { "loglevel", oLogLevel },
1.339 djm 258: { "logverbose", oLogVerbose },
1.71 markus 259: { "dynamicforward", oDynamicForward },
1.67 markus 260: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 261: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 262: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 263: { "bindaddress", oBindAddress },
1.282 djm 264: { "bindinterface", oBindInterface },
1.93 deraadt 265: { "clearallforwardings", oClearAllForwardings },
1.101 markus 266: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 267: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 268: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 269: { "rekeylimit", oRekeyLimit },
1.111 djm 270: { "connecttimeout", oConnectTimeout },
1.112 djm 271: { "addressfamily", oAddressFamily },
1.127 markus 272: { "serveraliveinterval", oServerAliveInterval },
273: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 274: { "sendenv", oSendEnv },
1.290 djm 275: { "setenv", oSetEnv },
1.132 djm 276: { "controlpath", oControlPath },
277: { "controlmaster", oControlMaster },
1.187 djm 278: { "controlpersist", oControlPersist },
1.136 djm 279: { "hashknownhosts", oHashKnownHosts },
1.252 djm 280: { "include", oInclude },
1.144 reyk 281: { "tunnel", oTunnel },
282: { "tunneldevice", oTunnelDevice },
283: { "localcommand", oLocalCommand },
284: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 285: { "remotecommand", oRemoteCommand },
1.167 grunk 286: { "visualhostkey", oVisualHostKey },
1.189 djm 287: { "kexalgorithms", oKexAlgorithms },
1.190 djm 288: { "ipqos", oIPQoS },
1.192 djm 289: { "requesttty", oRequestTTY },
1.359 djm 290: { "sessiontype", oSessionType },
1.360 djm 291: { "stdinnull", oStdinNull },
1.361 djm 292: { "forkafterauthentication", oForkAfterAuthentication },
1.205 djm 293: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 294: { "canonicaldomains", oCanonicalDomains },
1.209 djm 295: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
296: { "canonicalizehostname", oCanonicalizeHostname },
297: { "canonicalizemaxdots", oCanonicalizeMaxDots },
298: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 299: { "streamlocalbindmask", oStreamLocalBindMask },
300: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 301: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 302: { "fingerprinthash", oFingerprintHash },
1.229 djm 303: { "updatehostkeys", oUpdateHostkeys },
1.354 naddy 304: { "hostbasedacceptedalgorithms", oHostbasedAcceptedAlgorithms },
1.350 dtucker 305: { "hostbasedkeytypes", oHostbasedAcceptedAlgorithms }, /* obsolete */
1.352 dtucker 306: { "pubkeyacceptedalgorithms", oPubkeyAcceptedAlgorithms },
1.349 dtucker 307: { "pubkeyacceptedkeytypes", oPubkeyAcceptedAlgorithms }, /* obsolete */
1.199 djm 308: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 309: { "proxyjump", oProxyJump },
1.318 dtucker 310: { "securitykeyprovider", oSecurityKeyProvider },
1.346 djm 311: { "knownhostscommand", oKnownHostsCommand },
1.369 djm 312: { "requiredrsasize", oRequiredRSASize },
1.370 djm 313: { "enableescapecommandline", oEnableEscapeCommandline },
1.381 djm 314: { "obscurekeystroketiming", oObscureKeystrokeTiming },
1.382 djm 315: { "channeltimeout", oChannelTimeout },
1.171 djm 316:
1.92 stevesk 317: { NULL, oBadOption }
1.13 markus 318: };
319:
1.351 markus 320: static const char *lookup_opcode_name(OpCodes code);
1.320 dtucker 321:
322: const char *
323: kex_default_pk_alg(void)
324: {
1.344 djm 325: static char *pkalgs;
326:
327: if (pkalgs == NULL) {
328: char *all_key;
329:
330: all_key = sshkey_alg_list(0, 0, 1, ',');
331: pkalgs = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
332: free(all_key);
333: }
334: return pkalgs;
1.320 dtucker 335: }
336:
1.327 dtucker 337: char *
338: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
1.383 djm 339: const char *user, const char *jumphost)
1.327 dtucker 340: {
341: struct ssh_digest_ctx *md;
342: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
343:
344: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
345: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
346: ssh_digest_update(md, host, strlen(host)) < 0 ||
347: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
348: ssh_digest_update(md, user, strlen(user)) < 0 ||
1.383 djm 349: ssh_digest_update(md, jumphost, strlen(jumphost)) < 0 ||
1.327 dtucker 350: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
1.340 djm 351: fatal_f("mux digest failed");
1.327 dtucker 352: ssh_digest_free(md);
353: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
354: }
355:
1.19 markus 356: /*
357: * Adds a local TCP/IP port forward to options. Never returns if there is an
358: * error.
359: */
1.1 deraadt 360:
1.26 markus 361: void
1.220 millert 362: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 363: {
1.220 millert 364: struct Forward *fwd;
1.251 djm 365: int i;
1.185 djm 366:
1.251 djm 367: /* Don't add duplicates */
368: for (i = 0; i < options->num_local_forwards; i++) {
369: if (forward_equals(newfwd, options->local_forwards + i))
370: return;
371: }
1.234 deraadt 372: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 373: options->num_local_forwards + 1,
374: sizeof(*options->local_forwards));
1.17 markus 375: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 376:
1.172 stevesk 377: fwd->listen_host = newfwd->listen_host;
1.135 djm 378: fwd->listen_port = newfwd->listen_port;
1.220 millert 379: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 380: fwd->connect_host = newfwd->connect_host;
1.135 djm 381: fwd->connect_port = newfwd->connect_port;
1.220 millert 382: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 383: }
384:
1.19 markus 385: /*
386: * Adds a remote TCP/IP port forward to options. Never returns if there is
387: * an error.
388: */
1.1 deraadt 389:
1.26 markus 390: void
1.220 millert 391: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 392: {
1.220 millert 393: struct Forward *fwd;
1.251 djm 394: int i;
1.185 djm 395:
1.251 djm 396: /* Don't add duplicates */
397: for (i = 0; i < options->num_remote_forwards; i++) {
398: if (forward_equals(newfwd, options->remote_forwards + i))
399: return;
400: }
1.234 deraadt 401: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 402: options->num_remote_forwards + 1,
403: sizeof(*options->remote_forwards));
1.17 markus 404: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 405:
1.172 stevesk 406: fwd->listen_host = newfwd->listen_host;
1.135 djm 407: fwd->listen_port = newfwd->listen_port;
1.220 millert 408: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 409: fwd->connect_host = newfwd->connect_host;
1.135 djm 410: fwd->connect_port = newfwd->connect_port;
1.220 millert 411: fwd->connect_path = newfwd->connect_path;
1.194 markus 412: fwd->handle = newfwd->handle;
1.184 markus 413: fwd->allocated_port = 0;
1.1 deraadt 414: }
415:
1.90 stevesk 416: static void
417: clear_forwardings(Options *options)
418: {
419: int i;
420:
1.135 djm 421: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 422: free(options->local_forwards[i].listen_host);
1.220 millert 423: free(options->local_forwards[i].listen_path);
1.202 djm 424: free(options->local_forwards[i].connect_host);
1.220 millert 425: free(options->local_forwards[i].connect_path);
1.135 djm 426: }
1.185 djm 427: if (options->num_local_forwards > 0) {
1.202 djm 428: free(options->local_forwards);
1.185 djm 429: options->local_forwards = NULL;
430: }
1.90 stevesk 431: options->num_local_forwards = 0;
1.135 djm 432: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 433: free(options->remote_forwards[i].listen_host);
1.220 millert 434: free(options->remote_forwards[i].listen_path);
1.202 djm 435: free(options->remote_forwards[i].connect_host);
1.220 millert 436: free(options->remote_forwards[i].connect_path);
1.135 djm 437: }
1.185 djm 438: if (options->num_remote_forwards > 0) {
1.202 djm 439: free(options->remote_forwards);
1.185 djm 440: options->remote_forwards = NULL;
441: }
1.90 stevesk 442: options->num_remote_forwards = 0;
1.145 reyk 443: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 444: }
445:
1.195 dtucker 446: void
1.241 djm 447: add_certificate_file(Options *options, const char *path, int userprovided)
448: {
449: int i;
450:
451: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
452: fatal("Too many certificate files specified (max %d)",
453: SSH_MAX_CERTIFICATE_FILES);
454:
455: /* Avoid registering duplicates */
456: for (i = 0; i < options->num_certificate_files; i++) {
457: if (options->certificate_file_userprovided[i] == userprovided &&
458: strcmp(options->certificate_files[i], path) == 0) {
1.340 djm 459: debug2_f("ignoring duplicate key %s", path);
1.241 djm 460: return;
461: }
462: }
463:
464: options->certificate_file_userprovided[options->num_certificate_files] =
465: userprovided;
466: options->certificate_files[options->num_certificate_files++] =
467: xstrdup(path);
468: }
469:
470: void
1.195 dtucker 471: add_identity_file(Options *options, const char *dir, const char *filename,
472: int userprovided)
473: {
474: char *path;
1.219 djm 475: int i;
1.195 dtucker 476:
477: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
478: fatal("Too many identity files specified (max %d)",
479: SSH_MAX_IDENTITY_FILES);
480:
481: if (dir == NULL) /* no dir, filename is absolute */
482: path = xstrdup(filename);
1.276 djm 483: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
484: fatal("Identity file path %s too long", path);
1.219 djm 485:
486: /* Avoid registering duplicates */
487: for (i = 0; i < options->num_identity_files; i++) {
488: if (options->identity_file_userprovided[i] == userprovided &&
489: strcmp(options->identity_files[i], path) == 0) {
1.340 djm 490: debug2_f("ignoring duplicate key %s", path);
1.219 djm 491: free(path);
492: return;
493: }
494: }
1.195 dtucker 495:
496: options->identity_file_userprovided[options->num_identity_files] =
497: userprovided;
498: options->identity_files[options->num_identity_files++] = path;
499: }
500:
1.206 djm 501: int
502: default_ssh_port(void)
503: {
504: static int port;
505: struct servent *sp;
506:
507: if (port == 0) {
508: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
509: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
510: }
511: return port;
512: }
513:
514: /*
515: * Execute a command in a shell.
516: * Return its exit status or -1 on abnormal exit.
517: */
518: static int
519: execute_in_shell(const char *cmd)
520: {
1.243 dtucker 521: char *shell;
1.206 djm 522: pid_t pid;
1.337 djm 523: int status;
1.206 djm 524:
525: if ((shell = getenv("SHELL")) == NULL)
526: shell = _PATH_BSHELL;
1.308 djm 527:
528: if (access(shell, X_OK) == -1) {
529: fatal("Shell \"%s\" is not executable: %s",
530: shell, strerror(errno));
531: }
1.206 djm 532:
533: debug("Executing command: '%.500s'", cmd);
534:
535: /* Fork and execute the command. */
536: if ((pid = fork()) == 0) {
1.245 djm 537: char *argv[4];
1.206 djm 538:
1.337 djm 539: if (stdfd_devnull(1, 1, 0) == -1)
1.340 djm 540: fatal_f("stdfd_devnull failed");
1.206 djm 541: closefrom(STDERR_FILENO + 1);
1.245 djm 542:
543: argv[0] = shell;
544: argv[1] = "-c";
545: argv[2] = xstrdup(cmd);
546: argv[3] = NULL;
1.206 djm 547:
548: execv(argv[0], argv);
549: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
550: /* Die with signal to make this error apparent to parent. */
1.321 dtucker 551: ssh_signal(SIGTERM, SIG_DFL);
1.206 djm 552: kill(getpid(), SIGTERM);
553: _exit(1);
554: }
555: /* Parent. */
1.307 deraadt 556: if (pid == -1)
1.340 djm 557: fatal_f("fork: %.100s", strerror(errno));
1.206 djm 558:
559: while (waitpid(pid, &status, 0) == -1) {
560: if (errno != EINTR && errno != EAGAIN)
1.340 djm 561: fatal_f("waitpid: %s", strerror(errno));
1.206 djm 562: }
563: if (!WIFEXITED(status)) {
564: error("command '%.100s' exited abnormally", cmd);
565: return -1;
1.221 djm 566: }
1.206 djm 567: debug3("command returned status %d", WEXITSTATUS(status));
568: return WEXITSTATUS(status);
569: }
570:
571: /*
1.378 djm 572: * Check whether a local network interface address appears in CIDR pattern-
573: * list 'addrlist'. Returns 1 if matched or 0 otherwise.
574: */
575: static int
576: check_match_ifaddrs(const char *addrlist)
577: {
578: struct ifaddrs *ifa, *ifaddrs = NULL;
579: int r, found = 0;
580: char addr[NI_MAXHOST];
581: socklen_t salen;
582:
583: if (getifaddrs(&ifaddrs) != 0) {
584: error("match localnetwork: getifaddrs failed: %s",
585: strerror(errno));
586: return 0;
587: }
588: for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) {
589: if (ifa->ifa_addr == NULL || ifa->ifa_name == NULL ||
590: (ifa->ifa_flags & IFF_UP) == 0)
591: continue;
592: switch (ifa->ifa_addr->sa_family) {
593: case AF_INET:
594: salen = sizeof(struct sockaddr_in);
595: break;
596: case AF_INET6:
597: salen = sizeof(struct sockaddr_in6);
598: break;
599: case AF_LINK:
600: /* ignore */
601: continue;
602: default:
603: debug2_f("interface %s: unsupported address family %d",
604: ifa->ifa_name, ifa->ifa_addr->sa_family);
605: continue;
606: }
607: if ((r = getnameinfo(ifa->ifa_addr, salen, addr, sizeof(addr),
608: NULL, 0, NI_NUMERICHOST)) != 0) {
609: debug2_f("interface %s getnameinfo failed: %s",
610: ifa->ifa_name, gai_strerror(r));
611: continue;
612: }
613: debug3_f("interface %s addr %s", ifa->ifa_name, addr);
614: if (addr_match_cidr_list(addr, addrlist) == 1) {
615: debug3_f("matched interface %s: address %s in %s",
616: ifa->ifa_name, addr, addrlist);
617: found = 1;
618: break;
619: }
620: }
621: freeifaddrs(ifaddrs);
622: return found;
623: }
624:
625: /*
1.206 djm 626: * Parse and execute a Match directive.
627: */
628: static int
629: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 630: const char *host_arg, const char *original_host, int final_pass,
631: int *want_final_pass, const char *filename, int linenum)
1.206 djm 632: {
1.221 djm 633: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 634: const char *ruser;
1.221 djm 635: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 636: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 637: char uidstr[32];
1.206 djm 638:
639: /*
640: * Configuration is likely to be incomplete at this point so we
641: * must be prepared to use default values.
642: */
643: port = options->port <= 0 ? default_ssh_port() : options->port;
644: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 645: if (final_pass) {
1.250 djm 646: host = xstrdup(options->hostname);
647: } else if (options->hostname != NULL) {
1.212 djm 648: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 649: host = percent_expand(options->hostname,
650: "h", host_arg, (char *)NULL);
1.250 djm 651: } else {
1.211 djm 652: host = xstrdup(host_arg);
1.250 djm 653: }
1.206 djm 654:
1.221 djm 655: debug2("checking match for '%s' host %s originally %s",
656: cp, host, original_host);
657: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
1.356 djm 658: /* Terminate on comment */
659: if (*attrib == '#') {
660: cp = NULL; /* mark all arguments consumed */
661: break;
662: }
663: arg = criteria = NULL;
1.221 djm 664: this_result = 1;
1.374 jcs 665: if ((negate = (attrib[0] == '!')))
1.221 djm 666: attrib++;
1.356 djm 667: /* Criterion "all" has no argument and must appear alone */
1.213 dtucker 668: if (strcasecmp(attrib, "all") == 0) {
1.356 djm 669: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
670: *arg != '\0' && *arg != '#')) {
1.221 djm 671: error("%.200s line %d: '%s' cannot be combined "
672: "with other Match attributes",
673: filename, linenum, oattrib);
1.213 dtucker 674: result = -1;
675: goto out;
676: }
1.356 djm 677: if (arg != NULL && *arg == '#')
678: cp = NULL; /* mark all arguments consumed */
1.221 djm 679: if (result)
680: result = negate ? 0 : 1;
1.213 dtucker 681: goto out;
682: }
1.221 djm 683: attributes++;
1.356 djm 684: /* criteria "final" and "canonical" have no argument */
1.302 djm 685: if (strcasecmp(attrib, "canonical") == 0 ||
686: strcasecmp(attrib, "final") == 0) {
687: /*
688: * If the config requests "Match final" then remember
689: * this so we can perform a second pass later.
690: */
691: if (strcasecmp(attrib, "final") == 0 &&
692: want_final_pass != NULL)
693: *want_final_pass = 1;
694: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 695: if (r == (negate ? 1 : 0))
696: this_result = result = 0;
697: debug3("%.200s line %d: %smatched '%s'",
698: filename, linenum,
699: this_result ? "" : "not ", oattrib);
700: continue;
701: }
702: /* All other criteria require an argument */
1.356 djm 703: if ((arg = strdelim(&cp)) == NULL ||
704: *arg == '\0' || *arg == '#') {
1.206 djm 705: error("Missing Match criteria for %s", attrib);
1.211 djm 706: result = -1;
707: goto out;
1.206 djm 708: }
709: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 710: criteria = xstrdup(host);
1.235 djm 711: r = match_hostname(host, arg) == 1;
1.221 djm 712: if (r == (negate ? 1 : 0))
713: this_result = result = 0;
1.206 djm 714: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 715: criteria = xstrdup(original_host);
1.235 djm 716: r = match_hostname(original_host, arg) == 1;
1.221 djm 717: if (r == (negate ? 1 : 0))
718: this_result = result = 0;
1.206 djm 719: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 720: criteria = xstrdup(ruser);
1.235 djm 721: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 722: if (r == (negate ? 1 : 0))
723: this_result = result = 0;
1.206 djm 724: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 725: criteria = xstrdup(pw->pw_name);
1.235 djm 726: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 727: if (r == (negate ? 1 : 0))
728: this_result = result = 0;
1.378 djm 729: } else if (strcasecmp(attrib, "localnetwork") == 0) {
730: if (addr_match_cidr_list(NULL, arg) == -1) {
731: /* Error already printed */
732: result = -1;
733: goto out;
734: }
735: r = check_match_ifaddrs(arg) == 1;
1.380 djm 736: if (r == (negate ? 1 : 0))
737: this_result = result = 0;
1.379 djm 738: } else if (strcasecmp(attrib, "tagged") == 0) {
739: criteria = xstrdup(options->tag == NULL ? "" :
740: options->tag);
741: r = match_pattern_list(criteria, arg, 0) == 1;
1.378 djm 742: if (r == (negate ? 1 : 0))
743: this_result = result = 0;
1.210 djm 744: } else if (strcasecmp(attrib, "exec") == 0) {
1.383 djm 745: char *conn_hash_hex, *keyalias, *jmphost;
1.327 dtucker 746:
1.206 djm 747: if (gethostname(thishost, sizeof(thishost)) == -1)
748: fatal("gethostname: %s", strerror(errno));
1.383 djm 749: jmphost = option_clear_or_none(options->jump_host) ?
750: "" : options->jump_host;
1.206 djm 751: strlcpy(shorthost, thishost, sizeof(shorthost));
752: shorthost[strcspn(thishost, ".")] = '\0';
753: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 754: snprintf(uidstr, sizeof(uidstr), "%llu",
755: (unsigned long long)pw->pw_uid);
1.327 dtucker 756: conn_hash_hex = ssh_connection_hash(thishost, host,
1.383 djm 757: portstr, ruser, jmphost);
1.333 dtucker 758: keyalias = options->host_key_alias ?
759: options->host_key_alias : host;
1.206 djm 760:
761: cmd = percent_expand(arg,
1.327 dtucker 762: "C", conn_hash_hex,
1.206 djm 763: "L", shorthost,
764: "d", pw->pw_dir,
765: "h", host,
1.333 dtucker 766: "k", keyalias,
1.206 djm 767: "l", thishost,
1.221 djm 768: "n", original_host,
1.206 djm 769: "p", portstr,
770: "r", ruser,
771: "u", pw->pw_name,
1.288 djm 772: "i", uidstr,
1.383 djm 773: "j", jmphost,
1.206 djm 774: (char *)NULL);
1.327 dtucker 775: free(conn_hash_hex);
1.217 djm 776: if (result != 1) {
777: /* skip execution if prior predicate failed */
1.221 djm 778: debug3("%.200s line %d: skipped exec "
779: "\"%.100s\"", filename, linenum, cmd);
780: free(cmd);
781: continue;
782: }
783: r = execute_in_shell(cmd);
784: if (r == -1) {
785: fatal("%.200s line %d: match exec "
786: "'%.100s' error", filename,
787: linenum, cmd);
1.217 djm 788: }
1.221 djm 789: criteria = xstrdup(cmd);
1.206 djm 790: free(cmd);
1.221 djm 791: /* Force exit status to boolean */
792: r = r == 0;
793: if (r == (negate ? 1 : 0))
794: this_result = result = 0;
1.206 djm 795: } else {
796: error("Unsupported Match attribute %s", attrib);
1.211 djm 797: result = -1;
798: goto out;
1.206 djm 799: }
1.378 djm 800: debug3("%.200s line %d: %smatched '%s%s%.100s%s' ",
801: filename, linenum, this_result ? "": "not ", oattrib,
802: criteria == NULL ? "" : " \"",
803: criteria == NULL ? "" : criteria,
804: criteria == NULL ? "" : "\"");
1.221 djm 805: free(criteria);
1.213 dtucker 806: }
807: if (attributes == 0) {
808: error("One or more attributes required for Match");
809: result = -1;
810: goto out;
1.206 djm 811: }
1.221 djm 812: out:
813: if (result != -1)
814: debug2("match %sfound", result ? "" : "not ");
1.206 djm 815: *condition = cp;
1.211 djm 816: free(host);
1.206 djm 817: return result;
818: }
819:
1.286 djm 820: /* Remove environment variable by pattern */
821: static void
822: rm_env(Options *options, const char *arg, const char *filename, int linenum)
823: {
1.368 djm 824: u_int i, j, onum_send_env = options->num_send_env;
1.286 djm 825:
826: /* Remove an environment variable */
827: for (i = 0; i < options->num_send_env; ) {
1.367 millert 828: if (!match_pattern(options->send_env[i], arg + 1)) {
1.286 djm 829: i++;
830: continue;
831: }
832: debug3("%s line %d: removing environment %s",
1.367 millert 833: filename, linenum, options->send_env[i]);
1.286 djm 834: free(options->send_env[i]);
835: options->send_env[i] = NULL;
836: for (j = i; j < options->num_send_env - 1; j++) {
837: options->send_env[j] = options->send_env[j + 1];
838: options->send_env[j + 1] = NULL;
839: }
840: options->num_send_env--;
841: /* NB. don't increment i */
1.330 djm 842: }
843: if (onum_send_env != options->num_send_env) {
844: options->send_env = xrecallocarray(options->send_env,
845: onum_send_env, options->num_send_env,
846: sizeof(*options->send_env));
1.286 djm 847: }
848: }
849:
1.19 markus 850: /*
1.70 stevesk 851: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 852: */
1.26 markus 853: static OpCodes
1.199 djm 854: parse_token(const char *cp, const char *filename, int linenum,
855: const char *ignored_unknown)
1.1 deraadt 856: {
1.199 djm 857: int i;
1.1 deraadt 858:
1.17 markus 859: for (i = 0; keywords[i].name; i++)
1.199 djm 860: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 861: return keywords[i].opcode;
1.235 djm 862: if (ignored_unknown != NULL &&
863: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 864: return oIgnoredUnknownOption;
1.75 stevesk 865: error("%s: line %d: Bad configuration option: %s",
866: filename, linenum, cp);
1.17 markus 867: return oBadOption;
1.1 deraadt 868: }
869:
1.207 djm 870: /* Multistate option parsing */
871: struct multistate {
872: char *key;
873: int value;
874: };
875: static const struct multistate multistate_flag[] = {
876: { "true", 1 },
877: { "false", 0 },
878: { "yes", 1 },
879: { "no", 0 },
880: { NULL, -1 }
881: };
882: static const struct multistate multistate_yesnoask[] = {
883: { "true", 1 },
884: { "false", 0 },
885: { "yes", 1 },
886: { "no", 0 },
887: { "ask", 2 },
888: { NULL, -1 }
889: };
1.278 djm 890: static const struct multistate multistate_strict_hostkey[] = {
891: { "true", SSH_STRICT_HOSTKEY_YES },
892: { "false", SSH_STRICT_HOSTKEY_OFF },
893: { "yes", SSH_STRICT_HOSTKEY_YES },
894: { "no", SSH_STRICT_HOSTKEY_OFF },
895: { "ask", SSH_STRICT_HOSTKEY_ASK },
896: { "off", SSH_STRICT_HOSTKEY_OFF },
897: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
898: { NULL, -1 }
899: };
1.246 jcs 900: static const struct multistate multistate_yesnoaskconfirm[] = {
901: { "true", 1 },
902: { "false", 0 },
903: { "yes", 1 },
904: { "no", 0 },
905: { "ask", 2 },
906: { "confirm", 3 },
907: { NULL, -1 }
908: };
1.207 djm 909: static const struct multistate multistate_addressfamily[] = {
910: { "inet", AF_INET },
911: { "inet6", AF_INET6 },
912: { "any", AF_UNSPEC },
913: { NULL, -1 }
914: };
915: static const struct multistate multistate_controlmaster[] = {
916: { "true", SSHCTL_MASTER_YES },
917: { "yes", SSHCTL_MASTER_YES },
918: { "false", SSHCTL_MASTER_NO },
919: { "no", SSHCTL_MASTER_NO },
920: { "auto", SSHCTL_MASTER_AUTO },
921: { "ask", SSHCTL_MASTER_ASK },
922: { "autoask", SSHCTL_MASTER_AUTO_ASK },
923: { NULL, -1 }
924: };
925: static const struct multistate multistate_tunnel[] = {
926: { "ethernet", SSH_TUNMODE_ETHERNET },
927: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
928: { "true", SSH_TUNMODE_DEFAULT },
929: { "yes", SSH_TUNMODE_DEFAULT },
930: { "false", SSH_TUNMODE_NO },
931: { "no", SSH_TUNMODE_NO },
932: { NULL, -1 }
933: };
934: static const struct multistate multistate_requesttty[] = {
935: { "true", REQUEST_TTY_YES },
936: { "yes", REQUEST_TTY_YES },
937: { "false", REQUEST_TTY_NO },
938: { "no", REQUEST_TTY_NO },
939: { "force", REQUEST_TTY_FORCE },
940: { "auto", REQUEST_TTY_AUTO },
941: { NULL, -1 }
942: };
1.359 djm 943: static const struct multistate multistate_sessiontype[] = {
944: { "none", SESSION_TYPE_NONE },
945: { "subsystem", SESSION_TYPE_SUBSYSTEM },
946: { "default", SESSION_TYPE_DEFAULT },
947: { NULL, -1 }
948: };
1.209 djm 949: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 950: { "true", SSH_CANONICALISE_YES },
951: { "false", SSH_CANONICALISE_NO },
952: { "yes", SSH_CANONICALISE_YES },
953: { "no", SSH_CANONICALISE_NO },
954: { "always", SSH_CANONICALISE_ALWAYS },
955: { NULL, -1 }
956: };
1.364 djm 957: static const struct multistate multistate_pubkey_auth[] = {
958: { "true", SSH_PUBKEY_AUTH_ALL },
959: { "false", SSH_PUBKEY_AUTH_NO },
960: { "yes", SSH_PUBKEY_AUTH_ALL },
961: { "no", SSH_PUBKEY_AUTH_NO },
962: { "unbound", SSH_PUBKEY_AUTH_UNBOUND },
963: { "host-bound", SSH_PUBKEY_AUTH_HBOUND },
964: { NULL, -1 }
965: };
1.322 dtucker 966: static const struct multistate multistate_compression[] = {
967: #ifdef WITH_ZLIB
968: { "yes", COMP_ZLIB },
969: #endif
970: { "no", COMP_NONE },
971: { NULL, -1 }
972: };
1.207 djm 973:
1.334 djm 974: static int
975: parse_multistate_value(const char *arg, const char *filename, int linenum,
976: const struct multistate *multistate_ptr)
977: {
978: int i;
979:
1.344 djm 980: if (!arg || *arg == '\0') {
981: error("%s line %d: missing argument.", filename, linenum);
982: return -1;
983: }
1.334 djm 984: for (i = 0; multistate_ptr[i].key != NULL; i++) {
985: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
986: return multistate_ptr[i].value;
987: }
988: return -1;
989: }
990:
1.19 markus 991: /*
992: * Processes a single option line as used in the configuration files. This
993: * only sets those values that have not already been set.
994: */
1.14 markus 995: int
1.206 djm 996: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 997: const char *original_host, char *line, const char *filename,
998: int linenum, int *activep, int flags)
1.1 deraadt 999: {
1.252 djm 1000: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 1001: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 1002: }
1003:
1004: #define WHITESPACE " \t\r\n"
1005: static int
1006: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
1007: const char *original_host, char *line, const char *filename,
1.302 djm 1008: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 1009: {
1.366 dtucker 1010: char *str, **charptr, *endofnumber, *keyword, *arg, *arg2, *p;
1.339 djm 1011: char **cpptr, ***cppptr, fwdarg[256];
1.351 markus 1012: u_int i, *uintptr, uvalue, max_entries = 0;
1.252 djm 1013: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.377 djm 1014: int remotefwd, dynamicfwd, ca_only = 0;
1.164 dtucker 1015: LogLevel *log_level_ptr;
1.271 dtucker 1016: SyslogFacility *log_facility_ptr;
1.201 dtucker 1017: long long val64;
1.102 markus 1018: size_t len;
1.220 millert 1019: struct Forward fwd;
1.207 djm 1020: const struct multistate *multistate_ptr;
1.208 djm 1021: struct allowed_cname *cname;
1.252 djm 1022: glob_t gl;
1.281 dtucker 1023: const char *errstr;
1.356 djm 1024: char **oav = NULL, **av;
1025: int oac = 0, ac;
1026: int ret = -1;
1.106 djm 1027:
1.206 djm 1028: if (activep == NULL) { /* We are processing a command line directive */
1029: cmdline = 1;
1030: activep = &cmdline;
1031: }
1032:
1.267 djm 1033: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 1034: if ((len = strlen(line)) == 0)
1035: return 0;
1036: for (len--; len > 0; len--) {
1.267 djm 1037: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 1038: break;
1039: line[len] = '\0';
1040: }
1.1 deraadt 1041:
1.356 djm 1042: str = line;
1.42 provos 1043: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 1044: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 1045: return 0;
1.42 provos 1046: /* Ignore leading whitespace. */
1047: if (*keyword == '\0')
1.356 djm 1048: keyword = strdelim(&str);
1.56 deraadt 1049: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 1050: return 0;
1.199 djm 1051: /* Match lowercase keyword */
1.207 djm 1052: lowercase(keyword);
1.17 markus 1053:
1.356 djm 1054: /* Prepare to parse remainder of line */
1055: if (str != NULL)
1056: str += strspn(str, WHITESPACE);
1057: if (str == NULL || *str == '\0') {
1058: error("%s line %d: no argument after keyword \"%s\"",
1059: filename, linenum, keyword);
1060: return -1;
1061: }
1.199 djm 1062: opcode = parse_token(keyword, filename, linenum,
1063: options->ignored_unknown);
1.356 djm 1064: if (argv_split(str, &oac, &oav, 1) != 0) {
1065: error("%s line %d: invalid quotes", filename, linenum);
1066: return -1;
1067: }
1068: ac = oac;
1069: av = oav;
1.17 markus 1070:
1071: switch (opcode) {
1072: case oBadOption:
1.19 markus 1073: /* don't panic, but count bad options */
1.356 djm 1074: goto out;
1.273 djm 1075: case oIgnore:
1.356 djm 1076: argv_consume(&ac);
1077: break;
1.199 djm 1078: case oIgnoredUnknownOption:
1079: debug("%s line %d: Ignored unknown option \"%s\"",
1080: filename, linenum, keyword);
1.356 djm 1081: argv_consume(&ac);
1082: break;
1.111 djm 1083: case oConnectTimeout:
1084: intptr = &options->connection_timeout;
1.127 markus 1085: parse_time:
1.356 djm 1086: arg = argv_next(&ac, &av);
1.344 djm 1087: if (!arg || *arg == '\0') {
1088: error("%s line %d: missing time value.",
1.111 djm 1089: filename, linenum);
1.356 djm 1090: goto out;
1.344 djm 1091: }
1.221 djm 1092: if (strcmp(arg, "none") == 0)
1093: value = -1;
1.344 djm 1094: else if ((value = convtime(arg)) == -1) {
1095: error("%s line %d: invalid time value.",
1.111 djm 1096: filename, linenum);
1.356 djm 1097: goto out;
1.344 djm 1098: }
1.160 dtucker 1099: if (*activep && *intptr == -1)
1.111 djm 1100: *intptr = value;
1101: break;
1102:
1.17 markus 1103: case oForwardAgent:
1104: intptr = &options->forward_agent;
1.319 djm 1105:
1.356 djm 1106: arg = argv_next(&ac, &av);
1.344 djm 1107: if (!arg || *arg == '\0') {
1108: error("%s line %d: missing argument.",
1.319 djm 1109: filename, linenum);
1.356 djm 1110: goto out;
1.344 djm 1111: }
1.319 djm 1112:
1113: value = -1;
1114: multistate_ptr = multistate_flag;
1115: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1116: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1117: value = multistate_ptr[i].value;
1118: break;
1119: }
1120: }
1121: if (value != -1) {
1122: if (*activep && *intptr == -1)
1123: *intptr = value;
1124: break;
1125: }
1126: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1127: if (*activep && *intptr == -1)
1128: *intptr = 1;
1129:
1130: charptr = &options->forward_agent_sock_path;
1131: goto parse_agent_path;
1132:
1133: case oForwardX11:
1134: intptr = &options->forward_x11;
1.207 djm 1135: parse_flag:
1136: multistate_ptr = multistate_flag;
1137: parse_multistate:
1.356 djm 1138: arg = argv_next(&ac, &av);
1.334 djm 1139: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1140: multistate_ptr)) == -1) {
1.344 djm 1141: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1142: filename, linenum, arg);
1.356 djm 1143: goto out;
1.334 djm 1144: }
1.17 markus 1145: if (*activep && *intptr == -1)
1146: *intptr = value;
1147: break;
1148:
1.123 markus 1149: case oForwardX11Trusted:
1150: intptr = &options->forward_x11_trusted;
1151: goto parse_flag;
1.221 djm 1152:
1.186 djm 1153: case oForwardX11Timeout:
1154: intptr = &options->forward_x11_timeout;
1155: goto parse_time;
1.123 markus 1156:
1.17 markus 1157: case oGatewayPorts:
1.220 millert 1158: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1159: goto parse_flag;
1160:
1.153 markus 1161: case oExitOnForwardFailure:
1162: intptr = &options->exit_on_forward_failure;
1163: goto parse_flag;
1164:
1.17 markus 1165: case oPasswordAuthentication:
1166: intptr = &options->password_authentication;
1167: goto parse_flag;
1168:
1.48 markus 1169: case oKbdInteractiveAuthentication:
1170: intptr = &options->kbd_interactive_authentication;
1171: goto parse_flag;
1172:
1173: case oKbdInteractiveDevices:
1174: charptr = &options->kbd_interactive_devices;
1175: goto parse_string;
1176:
1.50 markus 1177: case oPubkeyAuthentication:
1.364 djm 1178: multistate_ptr = multistate_pubkey_auth;
1.50 markus 1179: intptr = &options->pubkey_authentication;
1.364 djm 1180: goto parse_multistate;
1.30 markus 1181:
1.72 markus 1182: case oHostbasedAuthentication:
1183: intptr = &options->hostbased_authentication;
1184: goto parse_flag;
1185:
1.118 markus 1186: case oGssAuthentication:
1187: intptr = &options->gss_authentication;
1188: goto parse_flag;
1189:
1190: case oGssDelegateCreds:
1191: intptr = &options->gss_deleg_creds;
1192: goto parse_flag;
1193:
1.17 markus 1194: case oBatchMode:
1195: intptr = &options->batch_mode;
1196: goto parse_flag;
1197:
1198: case oCheckHostIP:
1199: intptr = &options->check_host_ip;
1.167 grunk 1200: goto parse_flag;
1.17 markus 1201:
1.107 jakob 1202: case oVerifyHostKeyDNS:
1203: intptr = &options->verify_host_key_dns;
1.207 djm 1204: multistate_ptr = multistate_yesnoask;
1205: goto parse_multistate;
1.107 jakob 1206:
1.17 markus 1207: case oStrictHostKeyChecking:
1208: intptr = &options->strict_host_key_checking;
1.278 djm 1209: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1210: goto parse_multistate;
1.17 markus 1211:
1212: case oCompression:
1213: intptr = &options->compression;
1.322 dtucker 1214: multistate_ptr = multistate_compression;
1215: goto parse_multistate;
1.17 markus 1216:
1.126 markus 1217: case oTCPKeepAlive:
1218: intptr = &options->tcp_keep_alive;
1.17 markus 1219: goto parse_flag;
1220:
1.91 markus 1221: case oNoHostAuthenticationForLocalhost:
1222: intptr = &options->no_host_authentication_for_localhost;
1223: goto parse_flag;
1224:
1.17 markus 1225: case oNumberOfPasswordPrompts:
1226: intptr = &options->number_of_password_prompts;
1227: goto parse_int;
1228:
1.105 markus 1229: case oRekeyLimit:
1.356 djm 1230: arg = argv_next(&ac, &av);
1.344 djm 1231: if (!arg || *arg == '\0') {
1232: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1233: linenum);
1.356 djm 1234: goto out;
1.344 djm 1235: }
1.198 dtucker 1236: if (strcmp(arg, "default") == 0) {
1237: val64 = 0;
1238: } else {
1.344 djm 1239: if (scan_scaled(arg, &val64) == -1) {
1240: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1241: filename, linenum, arg, strerror(errno));
1.356 djm 1242: goto out;
1.344 djm 1243: }
1244: if (val64 != 0 && val64 < 16) {
1245: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1246: filename, linenum);
1.356 djm 1247: goto out;
1.344 djm 1248: }
1.105 markus 1249: }
1.165 djm 1250: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1251: options->rekey_limit = val64;
1.356 djm 1252: if (ac != 0) { /* optional rekey interval present */
1253: if (strcmp(av[0], "none") == 0) {
1254: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1255: break;
1256: }
1257: intptr = &options->rekey_interval;
1258: goto parse_time;
1259: }
1.105 markus 1260: break;
1261:
1.17 markus 1262: case oIdentityFile:
1.356 djm 1263: arg = argv_next(&ac, &av);
1.344 djm 1264: if (!arg || *arg == '\0') {
1265: error("%.200s line %d: Missing argument.",
1266: filename, linenum);
1.356 djm 1267: goto out;
1.344 djm 1268: }
1.17 markus 1269: if (*activep) {
1.50 markus 1270: intptr = &options->num_identity_files;
1.344 djm 1271: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1272: error("%.200s line %d: Too many identity files "
1273: "specified (max %d).", filename, linenum,
1274: SSH_MAX_IDENTITY_FILES);
1.356 djm 1275: goto out;
1.344 djm 1276: }
1.221 djm 1277: add_identity_file(options, NULL,
1278: arg, flags & SSHCONF_USERCONF);
1.17 markus 1279: }
1280: break;
1281:
1.241 djm 1282: case oCertificateFile:
1.356 djm 1283: arg = argv_next(&ac, &av);
1.344 djm 1284: if (!arg || *arg == '\0') {
1285: error("%.200s line %d: Missing argument.",
1.241 djm 1286: filename, linenum);
1.356 djm 1287: goto out;
1.344 djm 1288: }
1.241 djm 1289: if (*activep) {
1290: intptr = &options->num_certificate_files;
1291: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1292: error("%.200s line %d: Too many certificate "
1.241 djm 1293: "files specified (max %d).",
1294: filename, linenum,
1295: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1296: goto out;
1.241 djm 1297: }
1298: add_certificate_file(options, arg,
1299: flags & SSHCONF_USERCONF);
1300: }
1301: break;
1302:
1.34 markus 1303: case oXAuthLocation:
1304: charptr=&options->xauth_location;
1305: goto parse_string;
1306:
1.17 markus 1307: case oUser:
1308: charptr = &options->user;
1309: parse_string:
1.356 djm 1310: arg = argv_next(&ac, &av);
1.344 djm 1311: if (!arg || *arg == '\0') {
1312: error("%.200s line %d: Missing argument.",
1.193 djm 1313: filename, linenum);
1.356 djm 1314: goto out;
1.344 djm 1315: }
1.17 markus 1316: if (*activep && *charptr == NULL)
1.38 provos 1317: *charptr = xstrdup(arg);
1.17 markus 1318: break;
1319:
1320: case oGlobalKnownHostsFile:
1.193 djm 1321: cpptr = (char **)&options->system_hostfiles;
1322: uintptr = &options->num_system_hostfiles;
1323: max_entries = SSH_MAX_HOSTS_FILES;
1324: parse_char_array:
1.356 djm 1325: i = 0;
1.357 djm 1326: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1327: while ((arg = argv_next(&ac, &av)) != NULL) {
1328: if (*arg == '\0') {
1329: error("%s line %d: keyword %s empty argument",
1330: filename, linenum, keyword);
1331: goto out;
1332: }
1333: /* Allow "none" only in first position */
1334: if (strcasecmp(arg, "none") == 0) {
1335: if (i > 0 || ac > 0) {
1336: error("%s line %d: keyword %s \"none\" "
1337: "argument must appear alone.",
1338: filename, linenum, keyword);
1339: goto out;
1340: }
1341: }
1342: i++;
1.357 djm 1343: if (*activep && value) {
1.344 djm 1344: if ((*uintptr) >= max_entries) {
1.356 djm 1345: error("%s line %d: too many %s "
1346: "entries.", filename, linenum,
1347: keyword);
1348: goto out;
1.344 djm 1349: }
1.193 djm 1350: cpptr[(*uintptr)++] = xstrdup(arg);
1351: }
1352: }
1.356 djm 1353: break;
1.17 markus 1354:
1355: case oUserKnownHostsFile:
1.193 djm 1356: cpptr = (char **)&options->user_hostfiles;
1357: uintptr = &options->num_user_hostfiles;
1358: max_entries = SSH_MAX_HOSTS_FILES;
1359: goto parse_char_array;
1.27 markus 1360:
1.306 jmc 1361: case oHostname:
1.17 markus 1362: charptr = &options->hostname;
1363: goto parse_string;
1364:
1.379 djm 1365: case oTag:
1366: charptr = &options->tag;
1367: goto parse_string;
1368:
1.52 markus 1369: case oHostKeyAlias:
1370: charptr = &options->host_key_alias;
1371: goto parse_string;
1372:
1.67 markus 1373: case oPreferredAuthentications:
1374: charptr = &options->preferred_authentications;
1375: goto parse_string;
1376:
1.77 markus 1377: case oBindAddress:
1378: charptr = &options->bind_address;
1379: goto parse_string;
1380:
1.282 djm 1381: case oBindInterface:
1382: charptr = &options->bind_interface;
1383: goto parse_string;
1384:
1.183 markus 1385: case oPKCS11Provider:
1386: charptr = &options->pkcs11_provider;
1.86 markus 1387: goto parse_string;
1.85 jakob 1388:
1.310 djm 1389: case oSecurityKeyProvider:
1390: charptr = &options->sk_provider;
1391: goto parse_string;
1392:
1.346 djm 1393: case oKnownHostsCommand:
1394: charptr = &options->known_hosts_command;
1395: goto parse_command;
1396:
1.17 markus 1397: case oProxyCommand:
1.144 reyk 1398: charptr = &options->proxy_command;
1.257 djm 1399: /* Ignore ProxyCommand if ProxyJump already specified */
1400: if (options->jump_host != NULL)
1401: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1402: parse_command:
1.356 djm 1403: if (str == NULL) {
1.344 djm 1404: error("%.200s line %d: Missing argument.",
1405: filename, linenum);
1.356 djm 1406: goto out;
1.344 djm 1407: }
1.356 djm 1408: len = strspn(str, WHITESPACE "=");
1.17 markus 1409: if (*activep && *charptr == NULL)
1.356 djm 1410: *charptr = xstrdup(str + len);
1411: argv_consume(&ac);
1412: break;
1.17 markus 1413:
1.257 djm 1414: case oProxyJump:
1.356 djm 1415: if (str == NULL) {
1.344 djm 1416: error("%.200s line %d: Missing argument.",
1.257 djm 1417: filename, linenum);
1.356 djm 1418: goto out;
1.257 djm 1419: }
1.356 djm 1420: len = strspn(str, WHITESPACE "=");
1421: /* XXX use argv? */
1422: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1423: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1424: filename, linenum, str + len);
1425: goto out;
1.257 djm 1426: }
1.356 djm 1427: argv_consume(&ac);
1428: break;
1.257 djm 1429:
1.17 markus 1430: case oPort:
1.356 djm 1431: arg = argv_next(&ac, &av);
1.344 djm 1432: if (!arg || *arg == '\0') {
1433: error("%.200s line %d: Missing argument.",
1.300 naddy 1434: filename, linenum);
1.356 djm 1435: goto out;
1.344 djm 1436: }
1.300 naddy 1437: value = a2port(arg);
1.344 djm 1438: if (value <= 0) {
1439: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1440: filename, linenum, arg);
1.356 djm 1441: goto out;
1.344 djm 1442: }
1.300 naddy 1443: if (*activep && options->port == -1)
1444: options->port = value;
1445: break;
1446:
1447: case oConnectionAttempts:
1448: intptr = &options->connection_attempts;
1.17 markus 1449: parse_int:
1.356 djm 1450: arg = argv_next(&ac, &av);
1.344 djm 1451: if ((errstr = atoi_err(arg, &value)) != NULL) {
1452: error("%s line %d: integer value %s.",
1.281 dtucker 1453: filename, linenum, errstr);
1.356 djm 1454: goto out;
1.344 djm 1455: }
1.17 markus 1456: if (*activep && *intptr == -1)
1457: *intptr = value;
1458: break;
1459:
1.25 markus 1460: case oCiphers:
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: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1469: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1470: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1471: goto out;
1.344 djm 1472: }
1.25 markus 1473: if (*activep && options->ciphers == NULL)
1.38 provos 1474: options->ciphers = xstrdup(arg);
1.25 markus 1475: break;
1476:
1.62 markus 1477: case oMacs:
1.356 djm 1478: arg = argv_next(&ac, &av);
1.344 djm 1479: if (!arg || *arg == '\0') {
1480: error("%.200s line %d: Missing argument.",
1481: filename, linenum);
1.356 djm 1482: goto out;
1.344 djm 1483: }
1.309 naddy 1484: if (*arg != '-' &&
1.344 djm 1485: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1486: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1487: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1488: goto out;
1.344 djm 1489: }
1.62 markus 1490: if (*activep && options->macs == NULL)
1491: options->macs = xstrdup(arg);
1492: break;
1493:
1.189 djm 1494: case oKexAlgorithms:
1.356 djm 1495: arg = argv_next(&ac, &av);
1.344 djm 1496: if (!arg || *arg == '\0') {
1497: error("%.200s line %d: Missing argument.",
1.189 djm 1498: filename, linenum);
1.356 djm 1499: goto out;
1.344 djm 1500: }
1.268 djm 1501: if (*arg != '-' &&
1.309 naddy 1502: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1503: arg + 1 : arg)) {
1504: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1505: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1506: goto out;
1.344 djm 1507: }
1.189 djm 1508: if (*activep && options->kex_algorithms == NULL)
1509: options->kex_algorithms = xstrdup(arg);
1510: break;
1511:
1.76 markus 1512: case oHostKeyAlgorithms:
1.238 markus 1513: charptr = &options->hostkeyalgorithms;
1.377 djm 1514: ca_only = 0;
1.349 dtucker 1515: parse_pubkey_algos:
1.356 djm 1516: arg = argv_next(&ac, &av);
1.344 djm 1517: if (!arg || *arg == '\0') {
1518: error("%.200s line %d: Missing argument.",
1.238 markus 1519: filename, linenum);
1.356 djm 1520: goto out;
1.344 djm 1521: }
1.268 djm 1522: if (*arg != '-' &&
1.309 naddy 1523: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.377 djm 1524: arg + 1 : arg, 1, ca_only)) {
1.344 djm 1525: error("%s line %d: Bad key types '%s'.",
1526: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1527: goto out;
1.344 djm 1528: }
1.238 markus 1529: if (*activep && *charptr == NULL)
1530: *charptr = xstrdup(arg);
1.76 markus 1531: break;
1532:
1.298 djm 1533: case oCASignatureAlgorithms:
1534: charptr = &options->ca_sign_algorithms;
1.377 djm 1535: ca_only = 1;
1.349 dtucker 1536: goto parse_pubkey_algos;
1.298 djm 1537:
1.17 markus 1538: case oLogLevel:
1.164 dtucker 1539: log_level_ptr = &options->log_level;
1.356 djm 1540: arg = argv_next(&ac, &av);
1.38 provos 1541: value = log_level_number(arg);
1.344 djm 1542: if (value == SYSLOG_LEVEL_NOT_SET) {
1543: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1544: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1545: goto out;
1.344 djm 1546: }
1.164 dtucker 1547: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1548: *log_level_ptr = (LogLevel) value;
1.17 markus 1549: break;
1550:
1.271 dtucker 1551: case oLogFacility:
1552: log_facility_ptr = &options->log_facility;
1.356 djm 1553: arg = argv_next(&ac, &av);
1.271 dtucker 1554: value = log_facility_number(arg);
1.344 djm 1555: if (value == SYSLOG_FACILITY_NOT_SET) {
1556: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1557: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1558: goto out;
1.344 djm 1559: }
1.271 dtucker 1560: if (*log_facility_ptr == -1)
1561: *log_facility_ptr = (SyslogFacility) value;
1562: break;
1563:
1.339 djm 1564: case oLogVerbose:
1565: cppptr = &options->log_verbose;
1566: uintptr = &options->num_log_verbose;
1.356 djm 1567: i = 0;
1568: while ((arg = argv_next(&ac, &av)) != NULL) {
1569: if (*arg == '\0') {
1570: error("%s line %d: keyword %s empty argument",
1571: filename, linenum, keyword);
1572: goto out;
1573: }
1574: /* Allow "none" only in first position */
1575: if (strcasecmp(arg, "none") == 0) {
1576: if (i > 0 || ac > 0) {
1577: error("%s line %d: keyword %s \"none\" "
1578: "argument must appear alone.",
1579: filename, linenum, keyword);
1580: goto out;
1581: }
1582: }
1583: i++;
1584: if (*activep && *uintptr == 0) {
1.339 djm 1585: *cppptr = xrecallocarray(*cppptr, *uintptr,
1586: *uintptr + 1, sizeof(**cppptr));
1587: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1588: }
1589: }
1.356 djm 1590: break;
1.339 djm 1591:
1.88 stevesk 1592: case oLocalForward:
1.17 markus 1593: case oRemoteForward:
1.168 stevesk 1594: case oDynamicForward:
1.356 djm 1595: arg = argv_next(&ac, &av);
1.344 djm 1596: if (!arg || *arg == '\0') {
1597: error("%.200s line %d: Missing argument.",
1.88 stevesk 1598: filename, linenum);
1.356 djm 1599: goto out;
1.344 djm 1600: }
1.135 djm 1601:
1.279 markus 1602: remotefwd = (opcode == oRemoteForward);
1603: dynamicfwd = (opcode == oDynamicForward);
1604:
1605: if (!dynamicfwd) {
1.356 djm 1606: arg2 = argv_next(&ac, &av);
1.279 markus 1607: if (arg2 == NULL || *arg2 == '\0') {
1608: if (remotefwd)
1609: dynamicfwd = 1;
1.344 djm 1610: else {
1611: error("%.200s line %d: Missing target "
1.279 markus 1612: "argument.", filename, linenum);
1.356 djm 1613: goto out;
1.344 djm 1614: }
1.279 markus 1615: } else {
1616: /* construct a string for parse_forward */
1617: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1618: arg2);
1619: }
1620: }
1621: if (dynamicfwd)
1.168 stevesk 1622: strlcpy(fwdarg, arg, sizeof(fwdarg));
1623:
1.344 djm 1624: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1625: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1626: filename, linenum);
1.356 djm 1627: goto out;
1.344 djm 1628: }
1.135 djm 1629:
1.88 stevesk 1630: if (*activep) {
1.279 markus 1631: if (remotefwd) {
1632: add_remote_forward(options, &fwd);
1633: } else {
1.135 djm 1634: add_local_forward(options, &fwd);
1.279 markus 1635: }
1.88 stevesk 1636: }
1.17 markus 1637: break;
1.71 markus 1638:
1.351 markus 1639: case oPermitRemoteOpen:
1640: uintptr = &options->num_permitted_remote_opens;
1641: cppptr = &options->permitted_remote_opens;
1642: uvalue = *uintptr; /* modified later */
1.371 djm 1643: i = 0;
1.356 djm 1644: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1645: arg2 = xstrdup(arg);
1.371 djm 1646: /* Allow any/none only in first position */
1647: if (strcasecmp(arg, "none") == 0 ||
1648: strcasecmp(arg, "any") == 0) {
1649: if (i > 0 || ac > 0) {
1650: error("%s line %d: keyword %s \"%s\" "
1651: "argument must appear alone.",
1652: filename, linenum, keyword, arg);
1.376 djm 1653: free(arg2);
1.371 djm 1654: goto out;
1655: }
1656: } else {
1657: p = hpdelim(&arg);
1658: if (p == NULL) {
1659: fatal("%s line %d: missing host in %s",
1660: filename, linenum,
1661: lookup_opcode_name(opcode));
1662: }
1663: p = cleanhostname(p);
1664: /*
1665: * don't want to use permitopen_port to avoid
1666: * dependency on channels.[ch] here.
1667: */
1668: if (arg == NULL || (strcmp(arg, "*") != 0 &&
1669: a2port(arg) <= 0)) {
1670: fatal("%s line %d: bad port number "
1671: "in %s", filename, linenum,
1672: lookup_opcode_name(opcode));
1673: }
1.351 markus 1674: }
1675: if (*activep && uvalue == 0) {
1676: opt_array_append(filename, linenum,
1677: lookup_opcode_name(opcode),
1678: cppptr, uintptr, arg2);
1679: }
1680: free(arg2);
1.371 djm 1681: i++;
1.351 markus 1682: }
1.371 djm 1683: if (i == 0)
1684: fatal("%s line %d: missing %s specification",
1685: filename, linenum, lookup_opcode_name(opcode));
1.351 markus 1686: break;
1687:
1.90 stevesk 1688: case oClearAllForwardings:
1689: intptr = &options->clear_forwardings;
1690: goto parse_flag;
1691:
1.17 markus 1692: case oHost:
1.344 djm 1693: if (cmdline) {
1694: error("Host directive not supported as a command-line "
1.206 djm 1695: "option");
1.356 djm 1696: goto out;
1.344 djm 1697: }
1.17 markus 1698: *activep = 0;
1.191 djm 1699: arg2 = NULL;
1.356 djm 1700: while ((arg = argv_next(&ac, &av)) != NULL) {
1701: if (*arg == '\0') {
1702: error("%s line %d: keyword %s empty argument",
1703: filename, linenum, keyword);
1704: goto out;
1705: }
1706: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1707: argv_consume(&ac);
1.252 djm 1708: break;
1.356 djm 1709: }
1.191 djm 1710: negated = *arg == '!';
1711: if (negated)
1712: arg++;
1.38 provos 1713: if (match_pattern(host, arg)) {
1.191 djm 1714: if (negated) {
1715: debug("%.200s line %d: Skipping Host "
1716: "block because of negated match "
1717: "for %.100s", filename, linenum,
1718: arg);
1719: *activep = 0;
1.356 djm 1720: argv_consume(&ac);
1.191 djm 1721: break;
1722: }
1723: if (!*activep)
1724: arg2 = arg; /* logged below */
1.17 markus 1725: *activep = 1;
1726: }
1.191 djm 1727: }
1728: if (*activep)
1729: debug("%.200s line %d: Applying options for %.100s",
1730: filename, linenum, arg2);
1.356 djm 1731: break;
1.17 markus 1732:
1.206 djm 1733: case oMatch:
1.344 djm 1734: if (cmdline) {
1735: error("Host directive not supported as a command-line "
1.206 djm 1736: "option");
1.356 djm 1737: goto out;
1.344 djm 1738: }
1.356 djm 1739: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1740: flags & SSHCONF_FINAL, want_final_pass,
1741: filename, linenum);
1.344 djm 1742: if (value < 0) {
1743: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1744: linenum);
1.356 djm 1745: goto out;
1.344 djm 1746: }
1.252 djm 1747: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1748: /*
1749: * If match_cfg_line() didn't consume all its arguments then
1750: * arrange for the extra arguments check below to fail.
1751: */
1752:
1753: if (str == NULL || *str == '\0')
1754: argv_consume(&ac);
1.206 djm 1755: break;
1756:
1.17 markus 1757: case oEscapeChar:
1758: intptr = &options->escape_char;
1.356 djm 1759: arg = argv_next(&ac, &av);
1.344 djm 1760: if (!arg || *arg == '\0') {
1761: error("%.200s line %d: Missing argument.",
1762: filename, linenum);
1.356 djm 1763: goto out;
1.344 djm 1764: }
1.236 djm 1765: if (strcmp(arg, "none") == 0)
1766: value = SSH_ESCAPECHAR_NONE;
1767: else if (arg[1] == '\0')
1768: value = (u_char) arg[0];
1769: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1770: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1771: value = (u_char) arg[1] & 31;
1.17 markus 1772: else {
1.344 djm 1773: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1774: filename, linenum);
1.356 djm 1775: goto out;
1.17 markus 1776: }
1777: if (*activep && *intptr == -1)
1778: *intptr = value;
1.112 djm 1779: break;
1780:
1781: case oAddressFamily:
1.114 djm 1782: intptr = &options->address_family;
1.207 djm 1783: multistate_ptr = multistate_addressfamily;
1784: goto parse_multistate;
1.17 markus 1785:
1.101 markus 1786: case oEnableSSHKeysign:
1787: intptr = &options->enable_ssh_keysign;
1788: goto parse_flag;
1789:
1.128 markus 1790: case oIdentitiesOnly:
1791: intptr = &options->identities_only;
1792: goto parse_flag;
1793:
1.127 markus 1794: case oServerAliveInterval:
1795: intptr = &options->server_alive_interval;
1796: goto parse_time;
1797:
1798: case oServerAliveCountMax:
1799: intptr = &options->server_alive_count_max;
1800: goto parse_int;
1801:
1.130 djm 1802: case oSendEnv:
1.356 djm 1803: while ((arg = argv_next(&ac, &av)) != NULL) {
1804: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1805: error("%s line %d: Invalid environment name.",
1.130 djm 1806: filename, linenum);
1.356 djm 1807: goto out;
1.344 djm 1808: }
1.137 djm 1809: if (!*activep)
1810: continue;
1.286 djm 1811: if (*arg == '-') {
1812: /* Removing an env var */
1813: rm_env(options, arg, filename, linenum);
1814: continue;
1815: }
1.368 djm 1816: opt_array_append(filename, linenum,
1817: lookup_opcode_name(opcode),
1818: &options->send_env, &options->num_send_env, arg);
1.130 djm 1819: }
1820: break;
1821:
1.290 djm 1822: case oSetEnv:
1823: value = options->num_setenv;
1.356 djm 1824: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1825: if (strchr(arg, '=') == NULL) {
1826: error("%s line %d: Invalid SetEnv.",
1.290 djm 1827: filename, linenum);
1.356 djm 1828: goto out;
1.344 djm 1829: }
1.290 djm 1830: if (!*activep || value != 0)
1831: continue;
1.368 djm 1832: if (lookup_setenv_in_list(arg, options->setenv,
1833: options->num_setenv) != NULL) {
1834: debug2("%s line %d: ignoring duplicate env "
1835: "name \"%.64s\"", filename, linenum, arg);
1836: continue;
1.344 djm 1837: }
1.368 djm 1838: opt_array_append(filename, linenum,
1839: lookup_opcode_name(opcode),
1840: &options->setenv, &options->num_setenv, arg);
1.290 djm 1841: }
1842: break;
1843:
1.132 djm 1844: case oControlPath:
1845: charptr = &options->control_path;
1846: goto parse_string;
1847:
1848: case oControlMaster:
1849: intptr = &options->control_master;
1.207 djm 1850: multistate_ptr = multistate_controlmaster;
1851: goto parse_multistate;
1.132 djm 1852:
1.187 djm 1853: case oControlPersist:
1854: /* no/false/yes/true, or a time spec */
1855: intptr = &options->control_persist;
1.356 djm 1856: arg = argv_next(&ac, &av);
1.344 djm 1857: if (!arg || *arg == '\0') {
1858: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1859: " argument.", filename, linenum);
1.356 djm 1860: goto out;
1.344 djm 1861: }
1.187 djm 1862: value = 0;
1863: value2 = 0; /* timeout */
1864: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1865: value = 0;
1866: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1867: value = 1;
1868: else if ((value2 = convtime(arg)) >= 0)
1869: value = 1;
1.344 djm 1870: else {
1871: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1872: filename, linenum);
1.356 djm 1873: goto out;
1.344 djm 1874: }
1.187 djm 1875: if (*activep && *intptr == -1) {
1876: *intptr = value;
1877: options->control_persist_timeout = value2;
1878: }
1879: break;
1880:
1.136 djm 1881: case oHashKnownHosts:
1882: intptr = &options->hash_known_hosts;
1883: goto parse_flag;
1884:
1.144 reyk 1885: case oTunnel:
1886: intptr = &options->tun_open;
1.207 djm 1887: multistate_ptr = multistate_tunnel;
1888: goto parse_multistate;
1.144 reyk 1889:
1890: case oTunnelDevice:
1.356 djm 1891: arg = argv_next(&ac, &av);
1.344 djm 1892: if (!arg || *arg == '\0') {
1893: error("%.200s line %d: Missing argument.",
1894: filename, linenum);
1.356 djm 1895: goto out;
1.344 djm 1896: }
1.144 reyk 1897: value = a2tun(arg, &value2);
1.344 djm 1898: if (value == SSH_TUNID_ERR) {
1899: error("%.200s line %d: Bad tun device.",
1900: filename, linenum);
1.356 djm 1901: goto out;
1.344 djm 1902: }
1.355 dtucker 1903: if (*activep && options->tun_local == -1) {
1.144 reyk 1904: options->tun_local = value;
1905: options->tun_remote = value2;
1906: }
1907: break;
1908:
1909: case oLocalCommand:
1910: charptr = &options->local_command;
1911: goto parse_command;
1912:
1913: case oPermitLocalCommand:
1914: intptr = &options->permit_local_command;
1915: goto parse_flag;
1916:
1.277 bluhm 1917: case oRemoteCommand:
1918: charptr = &options->remote_command;
1919: goto parse_command;
1920:
1.167 grunk 1921: case oVisualHostKey:
1922: intptr = &options->visual_host_key;
1923: goto parse_flag;
1924:
1.252 djm 1925: case oInclude:
1.344 djm 1926: if (cmdline) {
1927: error("Include directive not supported as a "
1.252 djm 1928: "command-line option");
1.356 djm 1929: goto out;
1.344 djm 1930: }
1.252 djm 1931: value = 0;
1.356 djm 1932: while ((arg = argv_next(&ac, &av)) != NULL) {
1933: if (*arg == '\0') {
1934: error("%s line %d: keyword %s empty argument",
1935: filename, linenum, keyword);
1936: goto out;
1937: }
1.252 djm 1938: /*
1939: * Ensure all paths are anchored. User configuration
1940: * files may begin with '~/' but system configurations
1941: * must not. If the path is relative, then treat it
1942: * as living in ~/.ssh for user configurations or
1943: * /etc/ssh for system ones.
1944: */
1.344 djm 1945: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1946: error("%.200s line %d: bad include path %s.",
1.252 djm 1947: filename, linenum, arg);
1.356 djm 1948: goto out;
1.344 djm 1949: }
1.301 djm 1950: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1951: xasprintf(&arg2, "%s/%s",
1952: (flags & SSHCONF_USERCONF) ?
1953: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1954: } else
1955: arg2 = xstrdup(arg);
1956: memset(&gl, 0, sizeof(gl));
1957: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1958: if (r == GLOB_NOMATCH) {
1959: debug("%.200s line %d: include %s matched no "
1960: "files",filename, linenum, arg2);
1.269 dtucker 1961: free(arg2);
1.252 djm 1962: continue;
1.344 djm 1963: } else if (r != 0) {
1964: error("%.200s line %d: glob failed for %s.",
1.252 djm 1965: filename, linenum, arg2);
1.356 djm 1966: goto out;
1.344 djm 1967: }
1.252 djm 1968: free(arg2);
1969: oactive = *activep;
1.313 deraadt 1970: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1971: debug3("%.200s line %d: Including file %s "
1972: "depth %d%s", filename, linenum,
1973: gl.gl_pathv[i], depth,
1974: oactive ? "" : " (parse only)");
1975: r = read_config_file_depth(gl.gl_pathv[i],
1976: pw, host, original_host, options,
1977: flags | SSHCONF_CHECKPERM |
1978: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1979: activep, want_final_pass, depth + 1);
1.264 djm 1980: if (r != 1 && errno != ENOENT) {
1.344 djm 1981: error("Can't open user config file "
1.263 djm 1982: "%.100s: %.100s", gl.gl_pathv[i],
1983: strerror(errno));
1.344 djm 1984: globfree(&gl);
1.356 djm 1985: goto out;
1.263 djm 1986: }
1.252 djm 1987: /*
1988: * don't let Match in includes clobber the
1989: * containing file's Match state.
1990: */
1991: *activep = oactive;
1992: if (r != 1)
1993: value = -1;
1994: }
1995: globfree(&gl);
1996: }
1997: if (value != 0)
1.356 djm 1998: ret = value;
1.252 djm 1999: break;
2000:
1.190 djm 2001: case oIPQoS:
1.356 djm 2002: arg = argv_next(&ac, &av);
1.344 djm 2003: if ((value = parse_ipqos(arg)) == -1) {
2004: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 2005: filename, linenum, arg);
1.356 djm 2006: goto out;
1.344 djm 2007: }
1.356 djm 2008: arg = argv_next(&ac, &av);
1.190 djm 2009: if (arg == NULL)
2010: value2 = value;
1.344 djm 2011: else if ((value2 = parse_ipqos(arg)) == -1) {
2012: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 2013: filename, linenum, arg);
1.356 djm 2014: goto out;
1.344 djm 2015: }
1.355 dtucker 2016: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 2017: options->ip_qos_interactive = value;
2018: options->ip_qos_bulk = value2;
2019: }
2020: break;
2021:
1.192 djm 2022: case oRequestTTY:
2023: intptr = &options->request_tty;
1.207 djm 2024: multistate_ptr = multistate_requesttty;
2025: goto parse_multistate;
1.192 djm 2026:
1.359 djm 2027: case oSessionType:
2028: intptr = &options->session_type;
2029: multistate_ptr = multistate_sessiontype;
2030: goto parse_multistate;
2031:
1.360 djm 2032: case oStdinNull:
2033: intptr = &options->stdin_null;
2034: goto parse_flag;
2035:
1.361 djm 2036: case oForkAfterAuthentication:
2037: intptr = &options->fork_after_authentication;
2038: goto parse_flag;
2039:
1.199 djm 2040: case oIgnoreUnknown:
2041: charptr = &options->ignored_unknown;
2042: goto parse_string;
2043:
1.205 djm 2044: case oProxyUseFdpass:
2045: intptr = &options->proxy_use_fdpass;
2046: goto parse_flag;
2047:
1.208 djm 2048: case oCanonicalDomains:
2049: value = options->num_canonical_domains != 0;
1.356 djm 2050: i = 0;
2051: while ((arg = argv_next(&ac, &av)) != NULL) {
2052: if (*arg == '\0') {
2053: error("%s line %d: keyword %s empty argument",
2054: filename, linenum, keyword);
2055: goto out;
2056: }
2057: /* Allow "none" only in first position */
2058: if (strcasecmp(arg, "none") == 0) {
2059: if (i > 0 || ac > 0) {
2060: error("%s line %d: keyword %s \"none\" "
2061: "argument must appear alone.",
2062: filename, linenum, keyword);
2063: goto out;
2064: }
2065: }
2066: i++;
1.280 millert 2067: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 2068: error("%s line %d: %s", filename, linenum,
1.280 millert 2069: errstr);
1.356 djm 2070: goto out;
1.280 millert 2071: }
1.208 djm 2072: if (!*activep || value)
2073: continue;
1.344 djm 2074: if (options->num_canonical_domains >=
2075: MAX_CANON_DOMAINS) {
2076: error("%s line %d: too many hostname suffixes.",
1.208 djm 2077: filename, linenum);
1.356 djm 2078: goto out;
1.344 djm 2079: }
1.208 djm 2080: options->canonical_domains[
2081: options->num_canonical_domains++] = xstrdup(arg);
2082: }
2083: break;
2084:
1.209 djm 2085: case oCanonicalizePermittedCNAMEs:
1.208 djm 2086: value = options->num_permitted_cnames != 0;
1.362 djm 2087: i = 0;
1.356 djm 2088: while ((arg = argv_next(&ac, &av)) != NULL) {
1.362 djm 2089: /*
2090: * Either 'none' (only in first position), '*' for
2091: * everything or 'list:list'
2092: */
2093: if (strcasecmp(arg, "none") == 0) {
2094: if (i > 0 || ac > 0) {
2095: error("%s line %d: keyword %s \"none\" "
2096: "argument must appear alone.",
2097: filename, linenum, keyword);
2098: goto out;
2099: }
2100: arg2 = "";
2101: } else if (strcmp(arg, "*") == 0) {
1.208 djm 2102: arg2 = arg;
1.362 djm 2103: } else {
1.208 djm 2104: lowercase(arg);
2105: if ((arg2 = strchr(arg, ':')) == NULL ||
2106: arg2[1] == '\0') {
1.344 djm 2107: error("%s line %d: "
1.208 djm 2108: "Invalid permitted CNAME \"%s\"",
2109: filename, linenum, arg);
1.356 djm 2110: goto out;
1.208 djm 2111: }
2112: *arg2 = '\0';
2113: arg2++;
2114: }
1.362 djm 2115: i++;
1.208 djm 2116: if (!*activep || value)
2117: continue;
1.344 djm 2118: if (options->num_permitted_cnames >=
2119: MAX_CANON_DOMAINS) {
2120: error("%s line %d: too many permitted CNAMEs.",
1.208 djm 2121: filename, linenum);
1.356 djm 2122: goto out;
1.344 djm 2123: }
1.208 djm 2124: cname = options->permitted_cnames +
2125: options->num_permitted_cnames++;
2126: cname->source_list = xstrdup(arg);
2127: cname->target_list = xstrdup(arg2);
2128: }
2129: break;
2130:
1.209 djm 2131: case oCanonicalizeHostname:
2132: intptr = &options->canonicalize_hostname;
2133: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2134: goto parse_multistate;
2135:
1.209 djm 2136: case oCanonicalizeMaxDots:
2137: intptr = &options->canonicalize_max_dots;
1.208 djm 2138: goto parse_int;
2139:
1.209 djm 2140: case oCanonicalizeFallbackLocal:
2141: intptr = &options->canonicalize_fallback_local;
1.208 djm 2142: goto parse_flag;
2143:
1.220 millert 2144: case oStreamLocalBindMask:
1.356 djm 2145: arg = argv_next(&ac, &av);
1.344 djm 2146: if (!arg || *arg == '\0') {
2147: error("%.200s line %d: Missing StreamLocalBindMask "
2148: "argument.", filename, linenum);
1.356 djm 2149: goto out;
1.344 djm 2150: }
1.220 millert 2151: /* Parse mode in octal format */
2152: value = strtol(arg, &endofnumber, 8);
1.344 djm 2153: if (arg == endofnumber || value < 0 || value > 0777) {
2154: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2155: goto out;
1.344 djm 2156: }
1.220 millert 2157: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2158: break;
2159:
2160: case oStreamLocalBindUnlink:
2161: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2162: goto parse_flag;
2163:
1.223 djm 2164: case oRevokedHostKeys:
2165: charptr = &options->revoked_host_keys;
2166: goto parse_string;
2167:
1.224 djm 2168: case oFingerprintHash:
1.225 djm 2169: intptr = &options->fingerprint_hash;
1.356 djm 2170: arg = argv_next(&ac, &av);
1.344 djm 2171: if (!arg || *arg == '\0') {
2172: error("%.200s line %d: Missing argument.",
1.224 djm 2173: filename, linenum);
1.356 djm 2174: goto out;
1.344 djm 2175: }
2176: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2177: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2178: filename, linenum, arg);
1.356 djm 2179: goto out;
1.344 djm 2180: }
1.225 djm 2181: if (*activep && *intptr == -1)
2182: *intptr = value;
1.224 djm 2183: break;
2184:
1.229 djm 2185: case oUpdateHostkeys:
2186: intptr = &options->update_hostkeys;
1.232 djm 2187: multistate_ptr = multistate_yesnoask;
2188: goto parse_multistate;
1.229 djm 2189:
1.350 dtucker 2190: case oHostbasedAcceptedAlgorithms:
2191: charptr = &options->hostbased_accepted_algos;
1.377 djm 2192: ca_only = 0;
1.349 dtucker 2193: goto parse_pubkey_algos;
1.238 markus 2194:
1.349 dtucker 2195: case oPubkeyAcceptedAlgorithms:
2196: charptr = &options->pubkey_accepted_algos;
1.377 djm 2197: ca_only = 0;
1.349 dtucker 2198: goto parse_pubkey_algos;
1.230 djm 2199:
1.246 jcs 2200: case oAddKeysToAgent:
1.356 djm 2201: arg = argv_next(&ac, &av);
2202: arg2 = argv_next(&ac, &av);
1.334 djm 2203: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2204: multistate_yesnoaskconfirm);
1.334 djm 2205: value2 = 0; /* unlimited lifespan by default */
2206: if (value == 3 && arg2 != NULL) {
2207: /* allow "AddKeysToAgent confirm 5m" */
1.375 dtucker 2208: if ((value2 = convtime(arg2)) == -1) {
1.344 djm 2209: error("%s line %d: invalid time value.",
1.334 djm 2210: filename, linenum);
1.356 djm 2211: goto out;
1.344 djm 2212: }
1.334 djm 2213: } else if (value == -1 && arg2 == NULL) {
1.375 dtucker 2214: if ((value2 = convtime(arg)) == -1) {
1.344 djm 2215: error("%s line %d: unsupported option",
1.334 djm 2216: filename, linenum);
1.356 djm 2217: goto out;
1.344 djm 2218: }
1.334 djm 2219: value = 1; /* yes */
2220: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2221: error("%s line %d: unsupported option",
1.334 djm 2222: filename, linenum);
1.356 djm 2223: goto out;
1.334 djm 2224: }
2225: if (*activep && options->add_keys_to_agent == -1) {
2226: options->add_keys_to_agent = value;
2227: options->add_keys_to_agent_lifespan = value2;
2228: }
2229: break;
1.246 jcs 2230:
1.253 markus 2231: case oIdentityAgent:
2232: charptr = &options->identity_agent;
1.356 djm 2233: arg = argv_next(&ac, &av);
1.344 djm 2234: if (!arg || *arg == '\0') {
2235: error("%.200s line %d: Missing argument.",
1.299 djm 2236: filename, linenum);
1.356 djm 2237: goto out;
1.344 djm 2238: }
1.319 djm 2239: parse_agent_path:
1.299 djm 2240: /* Extra validation if the string represents an env var. */
1.344 djm 2241: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2242: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2243: "%s.", filename, linenum, arg);
1.356 djm 2244: goto out;
1.344 djm 2245: }
1.331 dtucker 2246: free(arg2);
2247: /* check for legacy environment format */
1.344 djm 2248: if (arg[0] == '$' && arg[1] != '{' &&
2249: !valid_env_name(arg + 1)) {
2250: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2251: filename, linenum, arg);
1.356 djm 2252: goto out;
1.299 djm 2253: }
2254: if (*activep && *charptr == NULL)
2255: *charptr = xstrdup(arg);
2256: break;
1.253 markus 2257:
1.370 djm 2258: case oEnableEscapeCommandline:
2259: intptr = &options->enable_escape_commandline;
2260: goto parse_flag;
2261:
1.369 djm 2262: case oRequiredRSASize:
2263: intptr = &options->required_rsa_size;
2264: goto parse_int;
2265:
1.381 djm 2266: case oObscureKeystrokeTiming:
2267: value = -1;
2268: while ((arg = argv_next(&ac, &av)) != NULL) {
2269: if (value != -1) {
2270: error("%s line %d: invalid arguments",
2271: filename, linenum);
2272: goto out;
2273: }
2274: if (strcmp(arg, "yes") == 0 ||
2275: strcmp(arg, "true") == 0)
2276: value = SSH_KEYSTROKE_DEFAULT_INTERVAL_MS;
2277: else if (strcmp(arg, "no") == 0 ||
2278: strcmp(arg, "false") == 0)
2279: value = 0;
2280: else if (strncmp(arg, "interval:", 9) == 0) {
2281: if ((errstr = atoi_err(arg + 9,
2282: &value)) != NULL) {
2283: error("%s line %d: integer value %s.",
2284: filename, linenum, errstr);
2285: goto out;
2286: }
2287: if (value <= 0 || value > 1000) {
2288: error("%s line %d: value out of range.",
2289: filename, linenum);
2290: goto out;
2291: }
2292: } else {
2293: error("%s line %d: unsupported argument \"%s\"",
2294: filename, linenum, arg);
2295: goto out;
2296: }
2297: }
2298: if (value == -1) {
2299: error("%s line %d: missing argument",
2300: filename, linenum);
2301: goto out;
2302: }
2303: intptr = &options->obscure_keystroke_timing_interval;
2304: if (*activep && *intptr == -1)
2305: *intptr = value;
2306: break;
2307:
1.382 djm 2308: case oChannelTimeout:
2309: uvalue = options->num_channel_timeouts;
2310: i = 0;
2311: while ((arg = argv_next(&ac, &av)) != NULL) {
2312: /* Allow "none" only in first position */
2313: if (strcasecmp(arg, "none") == 0) {
2314: if (i > 0 || ac > 0) {
2315: error("%s line %d: keyword %s \"none\" "
2316: "argument must appear alone.",
2317: filename, linenum, keyword);
2318: goto out;
2319: }
2320: } else if (parse_pattern_interval(arg,
2321: NULL, NULL) != 0) {
2322: fatal("%s line %d: invalid channel timeout %s",
2323: filename, linenum, arg);
2324: }
2325: if (!*activep || uvalue != 0)
2326: continue;
2327: opt_array_append(filename, linenum, keyword,
2328: &options->channel_timeouts,
2329: &options->num_channel_timeouts, arg);
2330: }
2331: break;
2332:
1.96 markus 2333: case oDeprecated:
1.98 markus 2334: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2335: filename, linenum, keyword);
1.356 djm 2336: argv_consume(&ac);
2337: break;
1.96 markus 2338:
1.110 jakob 2339: case oUnsupported:
2340: error("%s line %d: Unsupported option \"%s\"",
2341: filename, linenum, keyword);
1.356 djm 2342: argv_consume(&ac);
2343: break;
1.110 jakob 2344:
1.17 markus 2345: default:
1.344 djm 2346: error("%s line %d: Unimplemented opcode %d",
2347: filename, linenum, opcode);
1.356 djm 2348: goto out;
1.17 markus 2349: }
2350:
2351: /* Check that there is no garbage at end of line. */
1.356 djm 2352: if (ac > 0) {
2353: error("%.200s line %d: keyword %s extra arguments "
2354: "at end of line", filename, linenum, keyword);
2355: goto out;
1.39 ho 2356: }
1.356 djm 2357:
2358: /* success */
2359: ret = 0;
2360: out:
2361: argv_free(oav, oac);
2362: return ret;
1.1 deraadt 2363: }
2364:
1.19 markus 2365: /*
2366: * Reads the config file and modifies the options accordingly. Options
2367: * should already be initialized before this call. This never returns if
1.89 stevesk 2368: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2369: */
1.89 stevesk 2370: int
1.206 djm 2371: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2372: const char *original_host, Options *options, int flags,
2373: int *want_final_pass)
1.1 deraadt 2374: {
1.252 djm 2375: int active = 1;
2376:
2377: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2378: options, flags, &active, want_final_pass, 0);
1.252 djm 2379: }
2380:
2381: #define READCONF_MAX_DEPTH 16
2382: static int
2383: read_config_file_depth(const char *filename, struct passwd *pw,
2384: const char *host, const char *original_host, Options *options,
1.302 djm 2385: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2386: {
1.17 markus 2387: FILE *f;
1.356 djm 2388: char *line = NULL;
1.289 markus 2389: size_t linesize = 0;
1.252 djm 2390: int linenum;
1.17 markus 2391: int bad_options = 0;
2392:
1.252 djm 2393: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2394: fatal("Too many recursive configuration includes");
2395:
1.129 djm 2396: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2397: return 0;
1.129 djm 2398:
1.196 dtucker 2399: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2400: struct stat sb;
1.134 deraadt 2401:
1.131 dtucker 2402: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2403: fatal("fstat %s: %s", filename, strerror(errno));
2404: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2405: (sb.st_mode & 022) != 0))
1.129 djm 2406: fatal("Bad owner or permissions on %s", filename);
2407: }
1.17 markus 2408:
2409: debug("Reading configuration data %.200s", filename);
2410:
1.19 markus 2411: /*
2412: * Mark that we are now processing the options. This flag is turned
2413: * on/off by Host specifications.
2414: */
1.17 markus 2415: linenum = 0;
1.289 markus 2416: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2417: /* Update line number counter. */
2418: linenum++;
1.343 dtucker 2419: /*
2420: * Trim out comments and strip whitespace.
2421: * NB - preserve newlines, they are needed to reproduce
2422: * line numbers later for error messages.
2423: */
1.252 djm 2424: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2425: line, filename, linenum, activep, flags, want_final_pass,
2426: depth) != 0)
1.17 markus 2427: bad_options++;
2428: }
1.289 markus 2429: free(line);
1.17 markus 2430: fclose(f);
2431: if (bad_options > 0)
1.64 millert 2432: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2433: filename, bad_options);
1.89 stevesk 2434: return 1;
1.1 deraadt 2435: }
2436:
1.218 djm 2437: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2438: int
2439: option_clear_or_none(const char *o)
2440: {
2441: return o == NULL || strcasecmp(o, "none") == 0;
2442: }
2443:
1.19 markus 2444: /*
1.362 djm 2445: * Returns 1 if CanonicalizePermittedCNAMEs have been specified, 0 otherwise.
2446: * Allowed to be called on non-final configuration.
2447: */
2448: int
2449: config_has_permitted_cnames(Options *options)
2450: {
2451: if (options->num_permitted_cnames == 1 &&
2452: strcasecmp(options->permitted_cnames[0].source_list, "none") == 0 &&
2453: strcmp(options->permitted_cnames[0].target_list, "") == 0)
2454: return 0;
2455: return options->num_permitted_cnames > 0;
2456: }
2457:
2458: /*
1.19 markus 2459: * Initializes options to special values that indicate that they have not yet
2460: * been set. Read_config_file will only set options with this value. Options
2461: * are processed in the following order: command line, user config file,
2462: * system config file. Last, fill_default_options is called.
2463: */
1.1 deraadt 2464:
1.26 markus 2465: void
1.17 markus 2466: initialize_options(Options * options)
1.1 deraadt 2467: {
1.17 markus 2468: memset(options, 'X', sizeof(*options));
1.372 dtucker 2469: options->host_arg = NULL;
1.17 markus 2470: options->forward_agent = -1;
1.319 djm 2471: options->forward_agent_sock_path = NULL;
1.17 markus 2472: options->forward_x11 = -1;
1.123 markus 2473: options->forward_x11_trusted = -1;
1.186 djm 2474: options->forward_x11_timeout = -1;
1.255 dtucker 2475: options->stdio_forward_host = NULL;
2476: options->stdio_forward_port = 0;
1.256 dtucker 2477: options->clear_forwardings = -1;
1.153 markus 2478: options->exit_on_forward_failure = -1;
1.34 markus 2479: options->xauth_location = NULL;
1.220 millert 2480: options->fwd_opts.gateway_ports = -1;
2481: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2482: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2483: options->pubkey_authentication = -1;
1.118 markus 2484: options->gss_authentication = -1;
2485: options->gss_deleg_creds = -1;
1.17 markus 2486: options->password_authentication = -1;
1.48 markus 2487: options->kbd_interactive_authentication = -1;
2488: options->kbd_interactive_devices = NULL;
1.72 markus 2489: options->hostbased_authentication = -1;
1.17 markus 2490: options->batch_mode = -1;
2491: options->check_host_ip = -1;
2492: options->strict_host_key_checking = -1;
2493: options->compression = -1;
1.126 markus 2494: options->tcp_keep_alive = -1;
1.17 markus 2495: options->port = -1;
1.114 djm 2496: options->address_family = -1;
1.17 markus 2497: options->connection_attempts = -1;
1.111 djm 2498: options->connection_timeout = -1;
1.17 markus 2499: options->number_of_password_prompts = -1;
1.25 markus 2500: options->ciphers = NULL;
1.62 markus 2501: options->macs = NULL;
1.189 djm 2502: options->kex_algorithms = NULL;
1.76 markus 2503: options->hostkeyalgorithms = NULL;
1.298 djm 2504: options->ca_sign_algorithms = NULL;
1.17 markus 2505: options->num_identity_files = 0;
1.344 djm 2506: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2507: options->num_certificate_files = 0;
1.344 djm 2508: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2509: options->hostname = NULL;
1.52 markus 2510: options->host_key_alias = NULL;
1.17 markus 2511: options->proxy_command = NULL;
1.257 djm 2512: options->jump_user = NULL;
2513: options->jump_host = NULL;
2514: options->jump_port = -1;
2515: options->jump_extra = NULL;
1.17 markus 2516: options->user = NULL;
2517: options->escape_char = -1;
1.193 djm 2518: options->num_system_hostfiles = 0;
2519: options->num_user_hostfiles = 0;
1.185 djm 2520: options->local_forwards = NULL;
1.17 markus 2521: options->num_local_forwards = 0;
1.185 djm 2522: options->remote_forwards = NULL;
1.17 markus 2523: options->num_remote_forwards = 0;
1.351 markus 2524: options->permitted_remote_opens = NULL;
2525: options->num_permitted_remote_opens = 0;
1.271 dtucker 2526: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2527: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2528: options->num_log_verbose = 0;
2529: options->log_verbose = NULL;
1.67 markus 2530: options->preferred_authentications = NULL;
1.77 markus 2531: options->bind_address = NULL;
1.282 djm 2532: options->bind_interface = NULL;
1.183 markus 2533: options->pkcs11_provider = NULL;
1.310 djm 2534: options->sk_provider = NULL;
1.101 markus 2535: options->enable_ssh_keysign = - 1;
1.91 markus 2536: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2537: options->identities_only = - 1;
1.105 markus 2538: options->rekey_limit = - 1;
1.198 dtucker 2539: options->rekey_interval = -1;
1.107 jakob 2540: options->verify_host_key_dns = -1;
1.127 markus 2541: options->server_alive_interval = -1;
2542: options->server_alive_count_max = -1;
1.290 djm 2543: options->send_env = NULL;
1.130 djm 2544: options->num_send_env = 0;
1.290 djm 2545: options->setenv = NULL;
2546: options->num_setenv = 0;
1.132 djm 2547: options->control_path = NULL;
2548: options->control_master = -1;
1.187 djm 2549: options->control_persist = -1;
2550: options->control_persist_timeout = 0;
1.136 djm 2551: options->hash_known_hosts = -1;
1.144 reyk 2552: options->tun_open = -1;
2553: options->tun_local = -1;
2554: options->tun_remote = -1;
2555: options->local_command = NULL;
2556: options->permit_local_command = -1;
1.277 bluhm 2557: options->remote_command = NULL;
1.246 jcs 2558: options->add_keys_to_agent = -1;
1.334 djm 2559: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2560: options->identity_agent = NULL;
1.167 grunk 2561: options->visual_host_key = -1;
1.190 djm 2562: options->ip_qos_interactive = -1;
2563: options->ip_qos_bulk = -1;
1.192 djm 2564: options->request_tty = -1;
1.359 djm 2565: options->session_type = -1;
1.360 djm 2566: options->stdin_null = -1;
1.361 djm 2567: options->fork_after_authentication = -1;
1.205 djm 2568: options->proxy_use_fdpass = -1;
1.199 djm 2569: options->ignored_unknown = NULL;
1.208 djm 2570: options->num_canonical_domains = 0;
2571: options->num_permitted_cnames = 0;
1.209 djm 2572: options->canonicalize_max_dots = -1;
2573: options->canonicalize_fallback_local = -1;
2574: options->canonicalize_hostname = -1;
1.223 djm 2575: options->revoked_host_keys = NULL;
1.224 djm 2576: options->fingerprint_hash = -1;
1.229 djm 2577: options->update_hostkeys = -1;
1.350 dtucker 2578: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2579: options->pubkey_accepted_algos = NULL;
1.346 djm 2580: options->known_hosts_command = NULL;
1.369 djm 2581: options->required_rsa_size = -1;
1.370 djm 2582: options->enable_escape_commandline = -1;
1.381 djm 2583: options->obscure_keystroke_timing_interval = -1;
1.379 djm 2584: options->tag = NULL;
1.382 djm 2585: options->channel_timeouts = NULL;
2586: options->num_channel_timeouts = 0;
1.1 deraadt 2587: }
2588:
1.19 markus 2589: /*
1.218 djm 2590: * A petite version of fill_default_options() that just fills the options
2591: * needed for hostname canonicalization to proceed.
2592: */
2593: void
2594: fill_default_options_for_canonicalization(Options *options)
2595: {
2596: if (options->canonicalize_max_dots == -1)
2597: options->canonicalize_max_dots = 1;
2598: if (options->canonicalize_fallback_local == -1)
2599: options->canonicalize_fallback_local = 1;
2600: if (options->canonicalize_hostname == -1)
2601: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2602: }
2603:
2604: /*
1.19 markus 2605: * Called after processing other sources of option data, this fills those
2606: * options for which no value has been specified with their default values.
2607: */
1.344 djm 2608: int
1.17 markus 2609: fill_default_options(Options * options)
1.1 deraadt 2610: {
1.298 djm 2611: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2612: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2613: int ret = 0, r;
1.292 djm 2614:
1.17 markus 2615: if (options->forward_agent == -1)
1.33 markus 2616: options->forward_agent = 0;
1.17 markus 2617: if (options->forward_x11 == -1)
1.23 markus 2618: options->forward_x11 = 0;
1.123 markus 2619: if (options->forward_x11_trusted == -1)
2620: options->forward_x11_trusted = 0;
1.186 djm 2621: if (options->forward_x11_timeout == -1)
2622: options->forward_x11_timeout = 1200;
1.256 dtucker 2623: /*
2624: * stdio forwarding (-W) changes the default for these but we defer
2625: * setting the values so they can be overridden.
2626: */
1.153 markus 2627: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2628: options->exit_on_forward_failure =
2629: options->stdio_forward_host != NULL ? 1 : 0;
2630: if (options->clear_forwardings == -1)
2631: options->clear_forwardings =
2632: options->stdio_forward_host != NULL ? 1 : 0;
2633: if (options->clear_forwardings == 1)
2634: clear_forwardings(options);
2635:
1.34 markus 2636: if (options->xauth_location == NULL)
1.344 djm 2637: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2638: if (options->fwd_opts.gateway_ports == -1)
2639: options->fwd_opts.gateway_ports = 0;
2640: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2641: options->fwd_opts.streamlocal_bind_mask = 0177;
2642: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2643: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2644: if (options->pubkey_authentication == -1)
1.364 djm 2645: options->pubkey_authentication = SSH_PUBKEY_AUTH_ALL;
1.118 markus 2646: if (options->gss_authentication == -1)
1.122 markus 2647: options->gss_authentication = 0;
1.118 markus 2648: if (options->gss_deleg_creds == -1)
2649: options->gss_deleg_creds = 0;
1.17 markus 2650: if (options->password_authentication == -1)
2651: options->password_authentication = 1;
1.48 markus 2652: if (options->kbd_interactive_authentication == -1)
1.59 markus 2653: options->kbd_interactive_authentication = 1;
1.72 markus 2654: if (options->hostbased_authentication == -1)
2655: options->hostbased_authentication = 0;
1.17 markus 2656: if (options->batch_mode == -1)
2657: options->batch_mode = 0;
2658: if (options->check_host_ip == -1)
1.348 djm 2659: options->check_host_ip = 0;
1.17 markus 2660: if (options->strict_host_key_checking == -1)
1.278 djm 2661: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2662: if (options->compression == -1)
2663: options->compression = 0;
1.126 markus 2664: if (options->tcp_keep_alive == -1)
2665: options->tcp_keep_alive = 1;
1.17 markus 2666: if (options->port == -1)
2667: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2668: if (options->address_family == -1)
2669: options->address_family = AF_UNSPEC;
1.17 markus 2670: if (options->connection_attempts == -1)
1.84 markus 2671: options->connection_attempts = 1;
1.17 markus 2672: if (options->number_of_password_prompts == -1)
2673: options->number_of_password_prompts = 3;
1.76 markus 2674: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2675: if (options->add_keys_to_agent == -1) {
1.246 jcs 2676: options->add_keys_to_agent = 0;
1.334 djm 2677: options->add_keys_to_agent_lifespan = 0;
2678: }
1.17 markus 2679: if (options->num_identity_files == 0) {
1.273 djm 2680: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2681: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2682: add_identity_file(options, "~/",
1.310 djm 2683: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2684: add_identity_file(options, "~/",
1.273 djm 2685: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2686: add_identity_file(options, "~/",
2687: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2688: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.384 ! djm 2689: #ifdef WITH_DSA
1.365 dtucker 2690: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
1.384 ! djm 2691: #endif
1.27 markus 2692: }
1.17 markus 2693: if (options->escape_char == -1)
2694: options->escape_char = '~';
1.193 djm 2695: if (options->num_system_hostfiles == 0) {
2696: options->system_hostfiles[options->num_system_hostfiles++] =
2697: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2698: options->system_hostfiles[options->num_system_hostfiles++] =
2699: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2700: }
1.336 djm 2701: if (options->update_hostkeys == -1) {
1.338 djm 2702: if (options->verify_host_key_dns <= 0 &&
2703: (options->num_user_hostfiles == 0 ||
1.336 djm 2704: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2705: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2706: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2707: else
1.325 djm 2708: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2709: }
1.193 djm 2710: if (options->num_user_hostfiles == 0) {
2711: options->user_hostfiles[options->num_user_hostfiles++] =
2712: xstrdup(_PATH_SSH_USER_HOSTFILE);
2713: options->user_hostfiles[options->num_user_hostfiles++] =
2714: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2715: }
1.95 markus 2716: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2717: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2718: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2719: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2720: if (options->no_host_authentication_for_localhost == - 1)
2721: options->no_host_authentication_for_localhost = 0;
1.128 markus 2722: if (options->identities_only == -1)
2723: options->identities_only = 0;
1.101 markus 2724: if (options->enable_ssh_keysign == -1)
2725: options->enable_ssh_keysign = 0;
1.105 markus 2726: if (options->rekey_limit == -1)
2727: options->rekey_limit = 0;
1.198 dtucker 2728: if (options->rekey_interval == -1)
2729: options->rekey_interval = 0;
1.107 jakob 2730: if (options->verify_host_key_dns == -1)
2731: options->verify_host_key_dns = 0;
1.127 markus 2732: if (options->server_alive_interval == -1)
2733: options->server_alive_interval = 0;
2734: if (options->server_alive_count_max == -1)
2735: options->server_alive_count_max = 3;
1.132 djm 2736: if (options->control_master == -1)
2737: options->control_master = 0;
1.187 djm 2738: if (options->control_persist == -1) {
2739: options->control_persist = 0;
2740: options->control_persist_timeout = 0;
2741: }
1.136 djm 2742: if (options->hash_known_hosts == -1)
2743: options->hash_known_hosts = 0;
1.144 reyk 2744: if (options->tun_open == -1)
1.145 reyk 2745: options->tun_open = SSH_TUNMODE_NO;
2746: if (options->tun_local == -1)
2747: options->tun_local = SSH_TUNID_ANY;
2748: if (options->tun_remote == -1)
2749: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2750: if (options->permit_local_command == -1)
2751: options->permit_local_command = 0;
1.167 grunk 2752: if (options->visual_host_key == -1)
2753: options->visual_host_key = 0;
1.190 djm 2754: if (options->ip_qos_interactive == -1)
1.284 job 2755: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2756: if (options->ip_qos_bulk == -1)
1.284 job 2757: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2758: if (options->request_tty == -1)
2759: options->request_tty = REQUEST_TTY_AUTO;
1.359 djm 2760: if (options->session_type == -1)
2761: options->session_type = SESSION_TYPE_DEFAULT;
1.360 djm 2762: if (options->stdin_null == -1)
2763: options->stdin_null = 0;
1.361 djm 2764: if (options->fork_after_authentication == -1)
2765: options->fork_after_authentication = 0;
1.205 djm 2766: if (options->proxy_use_fdpass == -1)
2767: options->proxy_use_fdpass = 0;
1.209 djm 2768: if (options->canonicalize_max_dots == -1)
2769: options->canonicalize_max_dots = 1;
2770: if (options->canonicalize_fallback_local == -1)
2771: options->canonicalize_fallback_local = 1;
2772: if (options->canonicalize_hostname == -1)
2773: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2774: if (options->fingerprint_hash == -1)
2775: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2776: if (options->sk_provider == NULL)
1.314 djm 2777: options->sk_provider = xstrdup("internal");
1.369 djm 2778: if (options->required_rsa_size == -1)
2779: options->required_rsa_size = SSH_RSA_MINIMUM_MODULUS_SIZE;
1.370 djm 2780: if (options->enable_escape_commandline == -1)
2781: options->enable_escape_commandline = 0;
1.381 djm 2782: if (options->obscure_keystroke_timing_interval == -1) {
2783: options->obscure_keystroke_timing_interval =
2784: SSH_KEYSTROKE_DEFAULT_INTERVAL_MS;
2785: }
1.292 djm 2786:
2787: /* Expand KEX name lists */
2788: all_cipher = cipher_alg_list(',', 0);
2789: all_mac = mac_alg_list(',');
2790: all_kex = kex_alg_list(',');
2791: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2792: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2793: /* remove unsupported algos from default lists */
1.332 djm 2794: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2795: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2796: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2797: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2798: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2799: #define ASSEMBLE(what, defaults, all) \
2800: do { \
2801: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2802: defaults, all)) != 0) { \
2803: error_fr(r, "%s", #what); \
2804: goto fail; \
2805: } \
1.297 djm 2806: } while (0)
1.320 dtucker 2807: ASSEMBLE(ciphers, def_cipher, all_cipher);
2808: ASSEMBLE(macs, def_mac, all_mac);
2809: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2810: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2811: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2812: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2813: #undef ASSEMBLE
1.224 djm 2814:
1.207 djm 2815: #define CLEAR_ON_NONE(v) \
2816: do { \
1.218 djm 2817: if (option_clear_or_none(v)) { \
1.207 djm 2818: free(v); \
2819: v = NULL; \
2820: } \
2821: } while(0)
1.382 djm 2822: #define CLEAR_ON_NONE_ARRAY(v, nv, none) \
2823: do { \
2824: if (options->nv == 1 && \
2825: strcasecmp(options->v[0], none) == 0) { \
2826: free(options->v[0]); \
2827: free(options->v); \
2828: options->v = NULL; \
2829: options->nv = 0; \
2830: } \
2831: } while (0)
1.207 djm 2832: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2833: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2834: CLEAR_ON_NONE(options->proxy_command);
2835: CLEAR_ON_NONE(options->control_path);
1.223 djm 2836: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2837: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2838: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2839: CLEAR_ON_NONE(options->known_hosts_command);
1.382 djm 2840: CLEAR_ON_NONE_ARRAY(channel_timeouts, num_channel_timeouts, "none");
2841: #undef CLEAR_ON_NONE
2842: #undef CLEAR_ON_NONE_ARRAY
1.287 djm 2843: if (options->jump_host != NULL &&
2844: strcmp(options->jump_host, "none") == 0 &&
2845: options->jump_port == 0 && options->jump_user == NULL) {
2846: free(options->jump_host);
2847: options->jump_host = NULL;
2848: }
1.362 djm 2849: if (options->num_permitted_cnames == 1 &&
2850: !config_has_permitted_cnames(options)) {
2851: /* clean up CanonicalizePermittedCNAMEs=none */
2852: free(options->permitted_cnames[0].source_list);
2853: free(options->permitted_cnames[0].target_list);
2854: memset(options->permitted_cnames, '\0',
2855: sizeof(*options->permitted_cnames));
2856: options->num_permitted_cnames = 0;
2857: }
1.254 markus 2858: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2859: /* options->user will be set in the main program if appropriate */
2860: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2861: /* options->host_key_alias should not be set by default */
1.67 markus 2862: /* options->preferred_authentications will be set in ssh */
1.344 djm 2863:
2864: /* success */
2865: ret = 0;
2866: fail:
2867: free(all_cipher);
2868: free(all_mac);
2869: free(all_kex);
2870: free(all_key);
2871: free(all_sig);
2872: free(def_cipher);
2873: free(def_mac);
2874: free(def_kex);
2875: free(def_key);
2876: free(def_sig);
2877: return ret;
2878: }
2879:
2880: void
2881: free_options(Options *o)
2882: {
2883: int i;
2884:
2885: if (o == NULL)
2886: return;
2887:
2888: #define FREE_ARRAY(type, n, a) \
2889: do { \
2890: type _i; \
2891: for (_i = 0; _i < (n); _i++) \
2892: free((a)[_i]); \
2893: } while (0)
2894:
2895: free(o->forward_agent_sock_path);
2896: free(o->xauth_location);
2897: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2898: free(o->log_verbose);
2899: free(o->ciphers);
2900: free(o->macs);
2901: free(o->hostkeyalgorithms);
2902: free(o->kex_algorithms);
2903: free(o->ca_sign_algorithms);
2904: free(o->hostname);
2905: free(o->host_key_alias);
2906: free(o->proxy_command);
2907: free(o->user);
2908: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2909: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2910: free(o->preferred_authentications);
2911: free(o->bind_address);
2912: free(o->bind_interface);
2913: free(o->pkcs11_provider);
2914: free(o->sk_provider);
2915: for (i = 0; i < o->num_identity_files; i++) {
2916: free(o->identity_files[i]);
2917: sshkey_free(o->identity_keys[i]);
2918: }
2919: for (i = 0; i < o->num_certificate_files; i++) {
2920: free(o->certificate_files[i]);
2921: sshkey_free(o->certificates[i]);
2922: }
2923: free(o->identity_agent);
2924: for (i = 0; i < o->num_local_forwards; i++) {
2925: free(o->local_forwards[i].listen_host);
2926: free(o->local_forwards[i].listen_path);
2927: free(o->local_forwards[i].connect_host);
2928: free(o->local_forwards[i].connect_path);
2929: }
2930: free(o->local_forwards);
2931: for (i = 0; i < o->num_remote_forwards; i++) {
2932: free(o->remote_forwards[i].listen_host);
2933: free(o->remote_forwards[i].listen_path);
2934: free(o->remote_forwards[i].connect_host);
2935: free(o->remote_forwards[i].connect_path);
2936: }
2937: free(o->remote_forwards);
2938: free(o->stdio_forward_host);
1.368 djm 2939: FREE_ARRAY(u_int, o->num_send_env, o->send_env);
1.344 djm 2940: free(o->send_env);
1.368 djm 2941: FREE_ARRAY(u_int, o->num_setenv, o->setenv);
1.344 djm 2942: free(o->setenv);
2943: free(o->control_path);
2944: free(o->local_command);
2945: free(o->remote_command);
2946: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2947: for (i = 0; i < o->num_permitted_cnames; i++) {
2948: free(o->permitted_cnames[i].source_list);
2949: free(o->permitted_cnames[i].target_list);
2950: }
2951: free(o->revoked_host_keys);
1.350 dtucker 2952: free(o->hostbased_accepted_algos);
1.349 dtucker 2953: free(o->pubkey_accepted_algos);
1.344 djm 2954: free(o->jump_user);
2955: free(o->jump_host);
2956: free(o->jump_extra);
2957: free(o->ignored_unknown);
2958: explicit_bzero(o, sizeof(*o));
2959: #undef FREE_ARRAY
1.135 djm 2960: }
2961:
1.220 millert 2962: struct fwdarg {
2963: char *arg;
2964: int ispath;
2965: };
2966:
2967: /*
2968: * parse_fwd_field
2969: * parses the next field in a port forwarding specification.
2970: * sets fwd to the parsed field and advances p past the colon
2971: * or sets it to NULL at end of string.
2972: * returns 0 on success, else non-zero.
2973: */
2974: static int
2975: parse_fwd_field(char **p, struct fwdarg *fwd)
2976: {
2977: char *ep, *cp = *p;
2978: int ispath = 0;
2979:
2980: if (*cp == '\0') {
2981: *p = NULL;
2982: return -1; /* end of string */
2983: }
2984:
2985: /*
2986: * A field escaped with square brackets is used literally.
2987: * XXX - allow ']' to be escaped via backslash?
2988: */
2989: if (*cp == '[') {
2990: /* find matching ']' */
2991: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2992: if (*ep == '/')
2993: ispath = 1;
2994: }
2995: /* no matching ']' or not at end of field. */
2996: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2997: return -1;
2998: /* NUL terminate the field and advance p past the colon */
2999: *ep++ = '\0';
3000: if (*ep != '\0')
3001: *ep++ = '\0';
3002: fwd->arg = cp + 1;
3003: fwd->ispath = ispath;
3004: *p = ep;
3005: return 0;
3006: }
3007:
3008: for (cp = *p; *cp != '\0'; cp++) {
3009: switch (*cp) {
3010: case '\\':
3011: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 3012: if (*cp == '\0')
3013: return -1;
1.220 millert 3014: break;
3015: case '/':
3016: ispath = 1;
3017: break;
3018: case ':':
3019: *cp++ = '\0';
3020: goto done;
3021: }
3022: }
3023: done:
3024: fwd->arg = *p;
3025: fwd->ispath = ispath;
3026: *p = cp;
3027: return 0;
3028: }
3029:
1.135 djm 3030: /*
3031: * parse_forward
3032: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 3033: * dynamicfwd == 0
1.220 millert 3034: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
3035: * listenpath:connectpath
1.168 stevesk 3036: * dynamicfwd == 1
3037: * [listenhost:]listenport
1.135 djm 3038: * returns number of arguments parsed or zero on error
3039: */
3040: int
1.220 millert 3041: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 3042: {
1.220 millert 3043: struct fwdarg fwdargs[4];
3044: char *p, *cp;
1.331 dtucker 3045: int i, err;
1.135 djm 3046:
1.220 millert 3047: memset(fwd, 0, sizeof(*fwd));
3048: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 3049:
1.331 dtucker 3050: /*
3051: * We expand environment variables before checking if we think they're
3052: * paths so that if ${VAR} expands to a fully qualified path it is
3053: * treated as a path.
3054: */
3055: cp = p = dollar_expand(&err, fwdspec);
3056: if (p == NULL || err)
3057: return 0;
1.135 djm 3058:
3059: /* skip leading spaces */
1.214 deraadt 3060: while (isspace((u_char)*cp))
1.135 djm 3061: cp++;
3062:
1.220 millert 3063: for (i = 0; i < 4; ++i) {
3064: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 3065: break;
1.220 millert 3066: }
1.135 djm 3067:
1.170 stevesk 3068: /* Check for trailing garbage */
1.220 millert 3069: if (cp != NULL && *cp != '\0') {
1.135 djm 3070: i = 0; /* failure */
1.220 millert 3071: }
1.135 djm 3072:
3073: switch (i) {
1.168 stevesk 3074: case 1:
1.220 millert 3075: if (fwdargs[0].ispath) {
3076: fwd->listen_path = xstrdup(fwdargs[0].arg);
3077: fwd->listen_port = PORT_STREAMLOCAL;
3078: } else {
3079: fwd->listen_host = NULL;
3080: fwd->listen_port = a2port(fwdargs[0].arg);
3081: }
1.168 stevesk 3082: fwd->connect_host = xstrdup("socks");
3083: break;
3084:
3085: case 2:
1.220 millert 3086: if (fwdargs[0].ispath && fwdargs[1].ispath) {
3087: fwd->listen_path = xstrdup(fwdargs[0].arg);
3088: fwd->listen_port = PORT_STREAMLOCAL;
3089: fwd->connect_path = xstrdup(fwdargs[1].arg);
3090: fwd->connect_port = PORT_STREAMLOCAL;
3091: } else if (fwdargs[1].ispath) {
3092: fwd->listen_host = NULL;
3093: fwd->listen_port = a2port(fwdargs[0].arg);
3094: fwd->connect_path = xstrdup(fwdargs[1].arg);
3095: fwd->connect_port = PORT_STREAMLOCAL;
3096: } else {
3097: fwd->listen_host = xstrdup(fwdargs[0].arg);
3098: fwd->listen_port = a2port(fwdargs[1].arg);
3099: fwd->connect_host = xstrdup("socks");
3100: }
1.168 stevesk 3101: break;
3102:
1.135 djm 3103: case 3:
1.220 millert 3104: if (fwdargs[0].ispath) {
3105: fwd->listen_path = xstrdup(fwdargs[0].arg);
3106: fwd->listen_port = PORT_STREAMLOCAL;
3107: fwd->connect_host = xstrdup(fwdargs[1].arg);
3108: fwd->connect_port = a2port(fwdargs[2].arg);
3109: } else if (fwdargs[2].ispath) {
3110: fwd->listen_host = xstrdup(fwdargs[0].arg);
3111: fwd->listen_port = a2port(fwdargs[1].arg);
3112: fwd->connect_path = xstrdup(fwdargs[2].arg);
3113: fwd->connect_port = PORT_STREAMLOCAL;
3114: } else {
3115: fwd->listen_host = NULL;
3116: fwd->listen_port = a2port(fwdargs[0].arg);
3117: fwd->connect_host = xstrdup(fwdargs[1].arg);
3118: fwd->connect_port = a2port(fwdargs[2].arg);
3119: }
1.135 djm 3120: break;
3121:
3122: case 4:
1.220 millert 3123: fwd->listen_host = xstrdup(fwdargs[0].arg);
3124: fwd->listen_port = a2port(fwdargs[1].arg);
3125: fwd->connect_host = xstrdup(fwdargs[2].arg);
3126: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 3127: break;
3128: default:
3129: i = 0; /* failure */
3130: }
3131:
1.202 djm 3132: free(p);
1.135 djm 3133:
1.168 stevesk 3134: if (dynamicfwd) {
3135: if (!(i == 1 || i == 2))
3136: goto fail_free;
3137: } else {
1.220 millert 3138: if (!(i == 3 || i == 4)) {
3139: if (fwd->connect_path == NULL &&
3140: fwd->listen_path == NULL)
3141: goto fail_free;
3142: }
3143: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 3144: goto fail_free;
3145: }
3146:
1.220 millert 3147: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
3148: (!remotefwd && fwd->listen_port == 0))
1.135 djm 3149: goto fail_free;
3150: if (fwd->connect_host != NULL &&
3151: strlen(fwd->connect_host) >= NI_MAXHOST)
3152: goto fail_free;
1.356 djm 3153: /*
3154: * XXX - if connecting to a remote socket, max sun len may not
3155: * match this host
3156: */
1.220 millert 3157: if (fwd->connect_path != NULL &&
3158: strlen(fwd->connect_path) >= PATH_MAX_SUN)
3159: goto fail_free;
1.176 djm 3160: if (fwd->listen_host != NULL &&
3161: strlen(fwd->listen_host) >= NI_MAXHOST)
3162: goto fail_free;
1.220 millert 3163: if (fwd->listen_path != NULL &&
3164: strlen(fwd->listen_path) >= PATH_MAX_SUN)
3165: goto fail_free;
1.135 djm 3166:
3167: return (i);
3168:
3169: fail_free:
1.202 djm 3170: free(fwd->connect_host);
3171: fwd->connect_host = NULL;
1.220 millert 3172: free(fwd->connect_path);
3173: fwd->connect_path = NULL;
1.202 djm 3174: free(fwd->listen_host);
3175: fwd->listen_host = NULL;
1.220 millert 3176: free(fwd->listen_path);
3177: fwd->listen_path = NULL;
1.135 djm 3178: return (0);
1.221 djm 3179: }
3180:
1.257 djm 3181: int
3182: parse_jump(const char *s, Options *o, int active)
3183: {
3184: char *orig, *sdup, *cp;
3185: char *host = NULL, *user = NULL;
1.345 djm 3186: int r, ret = -1, port = -1, first;
1.257 djm 3187:
3188: active &= o->proxy_command == NULL && o->jump_host == NULL;
3189:
3190: orig = sdup = xstrdup(s);
1.356 djm 3191:
3192: /* Remove comment and trailing whitespace */
3193: if ((cp = strchr(orig, '#')) != NULL)
3194: *cp = '\0';
3195: rtrim(orig);
3196:
1.258 naddy 3197: first = active;
1.259 djm 3198: do {
1.287 djm 3199: if (strcasecmp(s, "none") == 0)
3200: break;
1.259 djm 3201: if ((cp = strrchr(sdup, ',')) == NULL)
3202: cp = sdup; /* last */
3203: else
3204: *cp++ = '\0';
3205:
1.258 naddy 3206: if (first) {
1.257 djm 3207: /* First argument and configuration is active */
1.345 djm 3208: r = parse_ssh_uri(cp, &user, &host, &port);
3209: if (r == -1 || (r == 1 &&
3210: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 3211: goto out;
3212: } else {
3213: /* Subsequent argument or inactive configuration */
1.345 djm 3214: r = parse_ssh_uri(cp, NULL, NULL, NULL);
3215: if (r == -1 || (r == 1 &&
3216: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 3217: goto out;
3218: }
1.258 naddy 3219: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 3220: } while (cp != sdup);
1.257 djm 3221: /* success */
1.258 naddy 3222: if (active) {
1.287 djm 3223: if (strcasecmp(s, "none") == 0) {
3224: o->jump_host = xstrdup("none");
3225: o->jump_port = 0;
3226: } else {
3227: o->jump_user = user;
3228: o->jump_host = host;
3229: o->jump_port = port;
3230: o->proxy_command = xstrdup("none");
3231: user = host = NULL;
3232: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
3233: o->jump_extra = xstrdup(s);
3234: o->jump_extra[cp - s] = '\0';
3235: }
1.259 djm 3236: }
1.258 naddy 3237: }
1.257 djm 3238: ret = 0;
3239: out:
1.258 naddy 3240: free(orig);
1.257 djm 3241: free(user);
3242: free(host);
3243: return ret;
1.280 millert 3244: }
3245:
3246: int
3247: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
3248: {
1.344 djm 3249: char *user = NULL, *host = NULL, *path = NULL;
3250: int r, port;
1.280 millert 3251:
1.344 djm 3252: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 3253: if (r == 0 && path != NULL)
3254: r = -1; /* path not allowed */
1.344 djm 3255: if (r == 0) {
3256: if (userp != NULL) {
3257: *userp = user;
3258: user = NULL;
3259: }
3260: if (hostp != NULL) {
3261: *hostp = host;
3262: host = NULL;
3263: }
3264: if (portp != NULL)
3265: *portp = port;
3266: }
3267: free(user);
3268: free(host);
3269: free(path);
1.280 millert 3270: return r;
1.257 djm 3271: }
3272:
1.221 djm 3273: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3274: static const char *
3275: fmt_multistate_int(int val, const struct multistate *m)
3276: {
3277: u_int i;
3278:
3279: for (i = 0; m[i].key != NULL; i++) {
3280: if (m[i].value == val)
3281: return m[i].key;
3282: }
3283: return "UNKNOWN";
3284: }
3285:
3286: static const char *
3287: fmt_intarg(OpCodes code, int val)
3288: {
3289: if (val == -1)
3290: return "unset";
3291: switch (code) {
3292: case oAddressFamily:
3293: return fmt_multistate_int(val, multistate_addressfamily);
3294: case oVerifyHostKeyDNS:
1.232 djm 3295: case oUpdateHostkeys:
1.221 djm 3296: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3297: case oStrictHostKeyChecking:
3298: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3299: case oControlMaster:
3300: return fmt_multistate_int(val, multistate_controlmaster);
3301: case oTunnel:
3302: return fmt_multistate_int(val, multistate_tunnel);
3303: case oRequestTTY:
3304: return fmt_multistate_int(val, multistate_requesttty);
1.359 djm 3305: case oSessionType:
3306: return fmt_multistate_int(val, multistate_sessiontype);
1.221 djm 3307: case oCanonicalizeHostname:
3308: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3309: case oAddKeysToAgent:
3310: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.364 djm 3311: case oPubkeyAuthentication:
3312: return fmt_multistate_int(val, multistate_pubkey_auth);
1.224 djm 3313: case oFingerprintHash:
3314: return ssh_digest_alg_name(val);
1.221 djm 3315: default:
3316: switch (val) {
3317: case 0:
3318: return "no";
3319: case 1:
3320: return "yes";
3321: default:
3322: return "UNKNOWN";
3323: }
3324: }
3325: }
3326:
3327: static const char *
3328: lookup_opcode_name(OpCodes code)
3329: {
3330: u_int i;
3331:
3332: for (i = 0; keywords[i].name != NULL; i++)
3333: if (keywords[i].opcode == code)
3334: return(keywords[i].name);
3335: return "UNKNOWN";
3336: }
3337:
3338: static void
3339: dump_cfg_int(OpCodes code, int val)
3340: {
1.381 djm 3341: if (code == oObscureKeystrokeTiming) {
3342: if (val == 0) {
3343: printf("%s no\n", lookup_opcode_name(code));
3344: return;
3345: } else if (val == SSH_KEYSTROKE_DEFAULT_INTERVAL_MS) {
3346: printf("%s yes\n", lookup_opcode_name(code));
3347: return;
3348: }
3349: /* FALLTHROUGH */
3350: }
1.221 djm 3351: printf("%s %d\n", lookup_opcode_name(code), val);
3352: }
3353:
3354: static void
3355: dump_cfg_fmtint(OpCodes code, int val)
3356: {
3357: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3358: }
3359:
3360: static void
3361: dump_cfg_string(OpCodes code, const char *val)
3362: {
3363: if (val == NULL)
3364: return;
3365: printf("%s %s\n", lookup_opcode_name(code), val);
3366: }
3367:
3368: static void
3369: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3370: {
3371: u_int i;
3372:
3373: for (i = 0; i < count; i++)
3374: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3375: }
3376:
3377: static void
3378: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3379: {
3380: u_int i;
3381:
3382: printf("%s", lookup_opcode_name(code));
1.356 djm 3383: if (count == 0)
3384: printf(" none");
1.221 djm 3385: for (i = 0; i < count; i++)
3386: printf(" %s", vals[i]);
3387: printf("\n");
3388: }
3389:
3390: static void
3391: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3392: {
3393: const struct Forward *fwd;
3394: u_int i;
3395:
3396: /* oDynamicForward */
3397: for (i = 0; i < count; i++) {
3398: fwd = &fwds[i];
1.265 djm 3399: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3400: strcmp(fwd->connect_host, "socks") != 0)
3401: continue;
1.265 djm 3402: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3403: strcmp(fwd->connect_host, "socks") == 0)
3404: continue;
3405: printf("%s", lookup_opcode_name(code));
3406: if (fwd->listen_port == PORT_STREAMLOCAL)
3407: printf(" %s", fwd->listen_path);
3408: else if (fwd->listen_host == NULL)
3409: printf(" %d", fwd->listen_port);
3410: else {
3411: printf(" [%s]:%d",
3412: fwd->listen_host, fwd->listen_port);
3413: }
3414: if (code != oDynamicForward) {
3415: if (fwd->connect_port == PORT_STREAMLOCAL)
3416: printf(" %s", fwd->connect_path);
3417: else if (fwd->connect_host == NULL)
3418: printf(" %d", fwd->connect_port);
3419: else {
3420: printf(" [%s]:%d",
3421: fwd->connect_host, fwd->connect_port);
3422: }
3423: }
3424: printf("\n");
3425: }
3426: }
3427:
3428: void
3429: dump_client_config(Options *o, const char *host)
3430: {
1.326 djm 3431: int i, r;
3432: char buf[8], *all_key;
3433:
3434: /*
3435: * Expand HostKeyAlgorithms name lists. This isn't handled in
3436: * fill_default_options() like the other algorithm lists because
3437: * the host key algorithms are by default dynamically chosen based
3438: * on the host's keys found in known_hosts.
3439: */
3440: all_key = sshkey_alg_list(0, 0, 1, ',');
3441: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3442: all_key)) != 0)
1.340 djm 3443: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3444: free(all_key);
1.240 djm 3445:
1.221 djm 3446: /* Most interesting options first: user, host, port */
1.372 dtucker 3447: dump_cfg_string(oHost, o->host_arg);
1.221 djm 3448: dump_cfg_string(oUser, o->user);
1.306 jmc 3449: dump_cfg_string(oHostname, host);
1.221 djm 3450: dump_cfg_int(oPort, o->port);
3451:
3452: /* Flag options */
3453: dump_cfg_fmtint(oAddressFamily, o->address_family);
3454: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3455: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3456: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3457: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3458: dump_cfg_fmtint(oCompression, o->compression);
3459: dump_cfg_fmtint(oControlMaster, o->control_master);
3460: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3461: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3462: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3463: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3464: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3465: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3466: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3467: #ifdef GSSAPI
3468: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3469: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3470: #endif /* GSSAPI */
3471: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3472: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3473: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3474: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3475: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3476: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3477: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3478: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3479: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3480: dump_cfg_fmtint(oRequestTTY, o->request_tty);
1.359 djm 3481: dump_cfg_fmtint(oSessionType, o->session_type);
1.360 djm 3482: dump_cfg_fmtint(oStdinNull, o->stdin_null);
1.361 djm 3483: dump_cfg_fmtint(oForkAfterAuthentication, o->fork_after_authentication);
1.221 djm 3484: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3485: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3486: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3487: dump_cfg_fmtint(oTunnel, o->tun_open);
3488: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3489: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3490: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.370 djm 3491: dump_cfg_fmtint(oEnableEscapeCommandline, o->enable_escape_commandline);
1.221 djm 3492:
3493: /* Integer options */
3494: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3495: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3496: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3497: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3498: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3499: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
1.369 djm 3500: dump_cfg_int(oRequiredRSASize, o->required_rsa_size);
1.381 djm 3501: dump_cfg_int(oObscureKeystrokeTiming,
3502: o->obscure_keystroke_timing_interval);
1.221 djm 3503:
3504: /* String options */
3505: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3506: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3507: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3508: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3509: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3510: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3511: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3512: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3513: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3514: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3515: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3516: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3517: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3518: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3519: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3520: dump_cfg_string(oMacs, o->macs);
1.266 djm 3521: #ifdef ENABLE_PKCS11
1.221 djm 3522: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3523: #endif
1.310 djm 3524: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3525: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3526: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3527: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3528: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3529: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.379 djm 3530: dump_cfg_string(oTag, o->tag);
1.221 djm 3531:
1.230 djm 3532: /* Forwards */
1.221 djm 3533: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3534: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3535: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3536:
3537: /* String array options */
3538: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3539: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3540: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3541: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3542: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3543: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3544: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3545: dump_cfg_strarray_oneline(oLogVerbose,
3546: o->num_log_verbose, o->log_verbose);
1.382 djm 3547: dump_cfg_strarray_oneline(oChannelTimeout,
3548: o->num_channel_timeouts, o->channel_timeouts);
1.221 djm 3549:
3550: /* Special cases */
1.351 markus 3551:
3552: /* PermitRemoteOpen */
3553: if (o->num_permitted_remote_opens == 0)
3554: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3555: else
3556: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3557: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3558:
3559: /* AddKeysToAgent */
3560: if (o->add_keys_to_agent_lifespan <= 0)
3561: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3562: else {
3563: printf("addkeystoagent%s %d\n",
3564: o->add_keys_to_agent == 3 ? " confirm" : "",
3565: o->add_keys_to_agent_lifespan);
3566: }
1.319 djm 3567:
3568: /* oForwardAgent */
3569: if (o->forward_agent_sock_path == NULL)
3570: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3571: else
3572: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3573:
3574: /* oConnectTimeout */
3575: if (o->connection_timeout == -1)
3576: printf("connecttimeout none\n");
3577: else
3578: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3579:
3580: /* oTunnelDevice */
3581: printf("tunneldevice");
3582: if (o->tun_local == SSH_TUNID_ANY)
3583: printf(" any");
3584: else
3585: printf(" %d", o->tun_local);
3586: if (o->tun_remote == SSH_TUNID_ANY)
3587: printf(":any");
3588: else
3589: printf(":%d", o->tun_remote);
3590: printf("\n");
3591:
3592: /* oCanonicalizePermittedCNAMEs */
1.362 djm 3593: printf("canonicalizePermittedcnames");
3594: if (o->num_permitted_cnames == 0)
1.363 djm 3595: printf(" none");
1.362 djm 3596: for (i = 0; i < o->num_permitted_cnames; i++) {
3597: printf(" %s:%s", o->permitted_cnames[i].source_list,
3598: o->permitted_cnames[i].target_list);
1.221 djm 3599: }
1.362 djm 3600: printf("\n");
1.221 djm 3601:
3602: /* oControlPersist */
3603: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3604: dump_cfg_fmtint(oControlPersist, o->control_persist);
3605: else
3606: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3607:
3608: /* oEscapeChar */
3609: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3610: printf("escapechar none\n");
3611: else {
1.257 djm 3612: vis(buf, o->escape_char, VIS_WHITE, 0);
3613: printf("escapechar %s\n", buf);
1.221 djm 3614: }
3615:
3616: /* oIPQoS */
3617: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3618: printf("%s\n", iptos2str(o->ip_qos_bulk));
3619:
3620: /* oRekeyLimit */
1.249 dtucker 3621: printf("rekeylimit %llu %d\n",
3622: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3623:
3624: /* oStreamLocalBindMask */
3625: printf("streamlocalbindmask 0%o\n",
3626: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3627:
3628: /* oLogFacility */
3629: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3630:
3631: /* oProxyCommand / oProxyJump */
3632: if (o->jump_host == NULL)
3633: dump_cfg_string(oProxyCommand, o->proxy_command);
3634: else {
3635: /* Check for numeric addresses */
3636: i = strchr(o->jump_host, ':') != NULL ||
3637: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3638: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3639: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3640: /* optional additional jump spec */
3641: o->jump_extra == NULL ? "" : o->jump_extra,
3642: o->jump_extra == NULL ? "" : ",",
1.257 djm 3643: /* optional user */
3644: o->jump_user == NULL ? "" : o->jump_user,
3645: o->jump_user == NULL ? "" : "@",
3646: /* opening [ if hostname is numeric */
3647: i ? "[" : "",
3648: /* mandatory hostname */
3649: o->jump_host,
3650: /* closing ] if hostname is numeric */
3651: i ? "]" : "",
3652: /* optional port number */
3653: o->jump_port <= 0 ? "" : ":",
1.259 djm 3654: o->jump_port <= 0 ? "" : buf);
1.257 djm 3655: }
1.1 deraadt 3656: }
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