Annotation of src/usr.bin/ssh/readconf.c, Revision 1.385
1.385 ! djm 1: /* $OpenBSD: readconf.c,v 1.384 2024/01/11 01:45:36 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];
1.385 ! djm 1012: u_int i, *uintptr, max_entries = 0;
1.252 djm 1013: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.385 ! djm 1014: int remotefwd, dynamicfwd, ca_only = 0, found = 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;
1.252 djm 1021: glob_t gl;
1.281 dtucker 1022: const char *errstr;
1.356 djm 1023: char **oav = NULL, **av;
1024: int oac = 0, ac;
1025: int ret = -1;
1.385 ! djm 1026: struct allowed_cname *cnames = NULL;
! 1027: u_int ncnames = 0;
! 1028: char **strs = NULL; /* string array arguments; freed implicitly */
! 1029: u_int nstrs = 0;
1.106 djm 1030:
1.206 djm 1031: if (activep == NULL) { /* We are processing a command line directive */
1032: cmdline = 1;
1033: activep = &cmdline;
1034: }
1035:
1.267 djm 1036: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 1037: if ((len = strlen(line)) == 0)
1038: return 0;
1039: for (len--; len > 0; len--) {
1.267 djm 1040: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 1041: break;
1042: line[len] = '\0';
1043: }
1.1 deraadt 1044:
1.356 djm 1045: str = line;
1.42 provos 1046: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.356 djm 1047: if ((keyword = strdelim(&str)) == NULL)
1.149 djm 1048: return 0;
1.42 provos 1049: /* Ignore leading whitespace. */
1050: if (*keyword == '\0')
1.356 djm 1051: keyword = strdelim(&str);
1.56 deraadt 1052: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 1053: return 0;
1.199 djm 1054: /* Match lowercase keyword */
1.207 djm 1055: lowercase(keyword);
1.17 markus 1056:
1.356 djm 1057: /* Prepare to parse remainder of line */
1058: if (str != NULL)
1059: str += strspn(str, WHITESPACE);
1060: if (str == NULL || *str == '\0') {
1061: error("%s line %d: no argument after keyword \"%s\"",
1062: filename, linenum, keyword);
1063: return -1;
1064: }
1.199 djm 1065: opcode = parse_token(keyword, filename, linenum,
1066: options->ignored_unknown);
1.356 djm 1067: if (argv_split(str, &oac, &oav, 1) != 0) {
1068: error("%s line %d: invalid quotes", filename, linenum);
1069: return -1;
1070: }
1071: ac = oac;
1072: av = oav;
1.17 markus 1073:
1074: switch (opcode) {
1075: case oBadOption:
1.19 markus 1076: /* don't panic, but count bad options */
1.356 djm 1077: goto out;
1.273 djm 1078: case oIgnore:
1.356 djm 1079: argv_consume(&ac);
1080: break;
1.199 djm 1081: case oIgnoredUnknownOption:
1082: debug("%s line %d: Ignored unknown option \"%s\"",
1083: filename, linenum, keyword);
1.356 djm 1084: argv_consume(&ac);
1085: break;
1.111 djm 1086: case oConnectTimeout:
1087: intptr = &options->connection_timeout;
1.127 markus 1088: parse_time:
1.356 djm 1089: arg = argv_next(&ac, &av);
1.344 djm 1090: if (!arg || *arg == '\0') {
1091: error("%s line %d: missing time value.",
1.111 djm 1092: filename, linenum);
1.356 djm 1093: goto out;
1.344 djm 1094: }
1.221 djm 1095: if (strcmp(arg, "none") == 0)
1096: value = -1;
1.344 djm 1097: else if ((value = convtime(arg)) == -1) {
1098: error("%s line %d: invalid time value.",
1.111 djm 1099: filename, linenum);
1.356 djm 1100: goto out;
1.344 djm 1101: }
1.160 dtucker 1102: if (*activep && *intptr == -1)
1.111 djm 1103: *intptr = value;
1104: break;
1105:
1.17 markus 1106: case oForwardAgent:
1107: intptr = &options->forward_agent;
1.319 djm 1108:
1.356 djm 1109: arg = argv_next(&ac, &av);
1.344 djm 1110: if (!arg || *arg == '\0') {
1111: error("%s line %d: missing argument.",
1.319 djm 1112: filename, linenum);
1.356 djm 1113: goto out;
1.344 djm 1114: }
1.319 djm 1115:
1116: value = -1;
1117: multistate_ptr = multistate_flag;
1118: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1119: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1120: value = multistate_ptr[i].value;
1121: break;
1122: }
1123: }
1124: if (value != -1) {
1125: if (*activep && *intptr == -1)
1126: *intptr = value;
1127: break;
1128: }
1129: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1130: if (*activep && *intptr == -1)
1131: *intptr = 1;
1132:
1133: charptr = &options->forward_agent_sock_path;
1134: goto parse_agent_path;
1135:
1136: case oForwardX11:
1137: intptr = &options->forward_x11;
1.207 djm 1138: parse_flag:
1139: multistate_ptr = multistate_flag;
1140: parse_multistate:
1.356 djm 1141: arg = argv_next(&ac, &av);
1.334 djm 1142: if ((value = parse_multistate_value(arg, filename, linenum,
1.353 djm 1143: multistate_ptr)) == -1) {
1.344 djm 1144: error("%s line %d: unsupported option \"%s\".",
1.207 djm 1145: filename, linenum, arg);
1.356 djm 1146: goto out;
1.334 djm 1147: }
1.17 markus 1148: if (*activep && *intptr == -1)
1149: *intptr = value;
1150: break;
1151:
1.123 markus 1152: case oForwardX11Trusted:
1153: intptr = &options->forward_x11_trusted;
1154: goto parse_flag;
1.221 djm 1155:
1.186 djm 1156: case oForwardX11Timeout:
1157: intptr = &options->forward_x11_timeout;
1158: goto parse_time;
1.123 markus 1159:
1.17 markus 1160: case oGatewayPorts:
1.220 millert 1161: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 1162: goto parse_flag;
1163:
1.153 markus 1164: case oExitOnForwardFailure:
1165: intptr = &options->exit_on_forward_failure;
1166: goto parse_flag;
1167:
1.17 markus 1168: case oPasswordAuthentication:
1169: intptr = &options->password_authentication;
1170: goto parse_flag;
1171:
1.48 markus 1172: case oKbdInteractiveAuthentication:
1173: intptr = &options->kbd_interactive_authentication;
1174: goto parse_flag;
1175:
1176: case oKbdInteractiveDevices:
1177: charptr = &options->kbd_interactive_devices;
1178: goto parse_string;
1179:
1.50 markus 1180: case oPubkeyAuthentication:
1.364 djm 1181: multistate_ptr = multistate_pubkey_auth;
1.50 markus 1182: intptr = &options->pubkey_authentication;
1.364 djm 1183: goto parse_multistate;
1.30 markus 1184:
1.72 markus 1185: case oHostbasedAuthentication:
1186: intptr = &options->hostbased_authentication;
1187: goto parse_flag;
1188:
1.118 markus 1189: case oGssAuthentication:
1190: intptr = &options->gss_authentication;
1191: goto parse_flag;
1192:
1193: case oGssDelegateCreds:
1194: intptr = &options->gss_deleg_creds;
1195: goto parse_flag;
1196:
1.17 markus 1197: case oBatchMode:
1198: intptr = &options->batch_mode;
1199: goto parse_flag;
1200:
1201: case oCheckHostIP:
1202: intptr = &options->check_host_ip;
1.167 grunk 1203: goto parse_flag;
1.17 markus 1204:
1.107 jakob 1205: case oVerifyHostKeyDNS:
1206: intptr = &options->verify_host_key_dns;
1.207 djm 1207: multistate_ptr = multistate_yesnoask;
1208: goto parse_multistate;
1.107 jakob 1209:
1.17 markus 1210: case oStrictHostKeyChecking:
1211: intptr = &options->strict_host_key_checking;
1.278 djm 1212: multistate_ptr = multistate_strict_hostkey;
1.207 djm 1213: goto parse_multistate;
1.17 markus 1214:
1215: case oCompression:
1216: intptr = &options->compression;
1.322 dtucker 1217: multistate_ptr = multistate_compression;
1218: goto parse_multistate;
1.17 markus 1219:
1.126 markus 1220: case oTCPKeepAlive:
1221: intptr = &options->tcp_keep_alive;
1.17 markus 1222: goto parse_flag;
1223:
1.91 markus 1224: case oNoHostAuthenticationForLocalhost:
1225: intptr = &options->no_host_authentication_for_localhost;
1226: goto parse_flag;
1227:
1.17 markus 1228: case oNumberOfPasswordPrompts:
1229: intptr = &options->number_of_password_prompts;
1230: goto parse_int;
1231:
1.105 markus 1232: case oRekeyLimit:
1.356 djm 1233: arg = argv_next(&ac, &av);
1.344 djm 1234: if (!arg || *arg == '\0') {
1235: error("%.200s line %d: Missing argument.", filename,
1.198 dtucker 1236: linenum);
1.356 djm 1237: goto out;
1.344 djm 1238: }
1.198 dtucker 1239: if (strcmp(arg, "default") == 0) {
1240: val64 = 0;
1241: } else {
1.344 djm 1242: if (scan_scaled(arg, &val64) == -1) {
1243: error("%.200s line %d: Bad number '%s': %s",
1.200 dtucker 1244: filename, linenum, arg, strerror(errno));
1.356 djm 1245: goto out;
1.344 djm 1246: }
1247: if (val64 != 0 && val64 < 16) {
1248: error("%.200s line %d: RekeyLimit too small",
1.198 dtucker 1249: filename, linenum);
1.356 djm 1250: goto out;
1.344 djm 1251: }
1.105 markus 1252: }
1.165 djm 1253: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1254: options->rekey_limit = val64;
1.356 djm 1255: if (ac != 0) { /* optional rekey interval present */
1256: if (strcmp(av[0], "none") == 0) {
1257: (void)argv_next(&ac, &av); /* discard */
1.198 dtucker 1258: break;
1259: }
1260: intptr = &options->rekey_interval;
1261: goto parse_time;
1262: }
1.105 markus 1263: break;
1264:
1.17 markus 1265: case oIdentityFile:
1.356 djm 1266: arg = argv_next(&ac, &av);
1.344 djm 1267: if (!arg || *arg == '\0') {
1268: error("%.200s line %d: Missing argument.",
1269: filename, linenum);
1.356 djm 1270: goto out;
1.344 djm 1271: }
1.17 markus 1272: if (*activep) {
1.50 markus 1273: intptr = &options->num_identity_files;
1.344 djm 1274: if (*intptr >= SSH_MAX_IDENTITY_FILES) {
1275: error("%.200s line %d: Too many identity files "
1276: "specified (max %d).", filename, linenum,
1277: SSH_MAX_IDENTITY_FILES);
1.356 djm 1278: goto out;
1.344 djm 1279: }
1.221 djm 1280: add_identity_file(options, NULL,
1281: arg, flags & SSHCONF_USERCONF);
1.17 markus 1282: }
1283: break;
1284:
1.241 djm 1285: case oCertificateFile:
1.356 djm 1286: arg = argv_next(&ac, &av);
1.344 djm 1287: if (!arg || *arg == '\0') {
1288: error("%.200s line %d: Missing argument.",
1.241 djm 1289: filename, linenum);
1.356 djm 1290: goto out;
1.344 djm 1291: }
1.241 djm 1292: if (*activep) {
1293: intptr = &options->num_certificate_files;
1294: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1.344 djm 1295: error("%.200s line %d: Too many certificate "
1.241 djm 1296: "files specified (max %d).",
1297: filename, linenum,
1298: SSH_MAX_CERTIFICATE_FILES);
1.356 djm 1299: goto out;
1.241 djm 1300: }
1301: add_certificate_file(options, arg,
1302: flags & SSHCONF_USERCONF);
1303: }
1304: break;
1305:
1.34 markus 1306: case oXAuthLocation:
1307: charptr=&options->xauth_location;
1308: goto parse_string;
1309:
1.17 markus 1310: case oUser:
1311: charptr = &options->user;
1312: parse_string:
1.356 djm 1313: arg = argv_next(&ac, &av);
1.344 djm 1314: if (!arg || *arg == '\0') {
1315: error("%.200s line %d: Missing argument.",
1.193 djm 1316: filename, linenum);
1.356 djm 1317: goto out;
1.344 djm 1318: }
1.17 markus 1319: if (*activep && *charptr == NULL)
1.38 provos 1320: *charptr = xstrdup(arg);
1.17 markus 1321: break;
1322:
1323: case oGlobalKnownHostsFile:
1.193 djm 1324: cpptr = (char **)&options->system_hostfiles;
1325: uintptr = &options->num_system_hostfiles;
1326: max_entries = SSH_MAX_HOSTS_FILES;
1327: parse_char_array:
1.356 djm 1328: i = 0;
1.357 djm 1329: value = *uintptr == 0; /* was array empty when we started? */
1.356 djm 1330: while ((arg = argv_next(&ac, &av)) != NULL) {
1331: if (*arg == '\0') {
1332: error("%s line %d: keyword %s empty argument",
1333: filename, linenum, keyword);
1334: goto out;
1335: }
1336: /* Allow "none" only in first position */
1337: if (strcasecmp(arg, "none") == 0) {
1338: if (i > 0 || ac > 0) {
1339: error("%s line %d: keyword %s \"none\" "
1340: "argument must appear alone.",
1341: filename, linenum, keyword);
1342: goto out;
1343: }
1344: }
1345: i++;
1.357 djm 1346: if (*activep && value) {
1.344 djm 1347: if ((*uintptr) >= max_entries) {
1.356 djm 1348: error("%s line %d: too many %s "
1349: "entries.", filename, linenum,
1350: keyword);
1351: goto out;
1.344 djm 1352: }
1.193 djm 1353: cpptr[(*uintptr)++] = xstrdup(arg);
1354: }
1355: }
1.356 djm 1356: break;
1.17 markus 1357:
1358: case oUserKnownHostsFile:
1.193 djm 1359: cpptr = (char **)&options->user_hostfiles;
1360: uintptr = &options->num_user_hostfiles;
1361: max_entries = SSH_MAX_HOSTS_FILES;
1362: goto parse_char_array;
1.27 markus 1363:
1.306 jmc 1364: case oHostname:
1.17 markus 1365: charptr = &options->hostname;
1366: goto parse_string;
1367:
1.379 djm 1368: case oTag:
1369: charptr = &options->tag;
1370: goto parse_string;
1371:
1.52 markus 1372: case oHostKeyAlias:
1373: charptr = &options->host_key_alias;
1374: goto parse_string;
1375:
1.67 markus 1376: case oPreferredAuthentications:
1377: charptr = &options->preferred_authentications;
1378: goto parse_string;
1379:
1.77 markus 1380: case oBindAddress:
1381: charptr = &options->bind_address;
1382: goto parse_string;
1383:
1.282 djm 1384: case oBindInterface:
1385: charptr = &options->bind_interface;
1386: goto parse_string;
1387:
1.183 markus 1388: case oPKCS11Provider:
1389: charptr = &options->pkcs11_provider;
1.86 markus 1390: goto parse_string;
1.85 jakob 1391:
1.310 djm 1392: case oSecurityKeyProvider:
1393: charptr = &options->sk_provider;
1394: goto parse_string;
1395:
1.346 djm 1396: case oKnownHostsCommand:
1397: charptr = &options->known_hosts_command;
1398: goto parse_command;
1399:
1.17 markus 1400: case oProxyCommand:
1.144 reyk 1401: charptr = &options->proxy_command;
1.257 djm 1402: /* Ignore ProxyCommand if ProxyJump already specified */
1403: if (options->jump_host != NULL)
1404: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1405: parse_command:
1.356 djm 1406: if (str == NULL) {
1.344 djm 1407: error("%.200s line %d: Missing argument.",
1408: filename, linenum);
1.356 djm 1409: goto out;
1.344 djm 1410: }
1.356 djm 1411: len = strspn(str, WHITESPACE "=");
1.17 markus 1412: if (*activep && *charptr == NULL)
1.356 djm 1413: *charptr = xstrdup(str + len);
1414: argv_consume(&ac);
1415: break;
1.17 markus 1416:
1.257 djm 1417: case oProxyJump:
1.356 djm 1418: if (str == NULL) {
1.344 djm 1419: error("%.200s line %d: Missing argument.",
1.257 djm 1420: filename, linenum);
1.356 djm 1421: goto out;
1.257 djm 1422: }
1.356 djm 1423: len = strspn(str, WHITESPACE "=");
1424: /* XXX use argv? */
1425: if (parse_jump(str + len, options, *activep) == -1) {
1.344 djm 1426: error("%.200s line %d: Invalid ProxyJump \"%s\"",
1.356 djm 1427: filename, linenum, str + len);
1428: goto out;
1.257 djm 1429: }
1.356 djm 1430: argv_consume(&ac);
1431: break;
1.257 djm 1432:
1.17 markus 1433: case oPort:
1.356 djm 1434: arg = argv_next(&ac, &av);
1.344 djm 1435: if (!arg || *arg == '\0') {
1436: error("%.200s line %d: Missing argument.",
1.300 naddy 1437: filename, linenum);
1.356 djm 1438: goto out;
1.344 djm 1439: }
1.300 naddy 1440: value = a2port(arg);
1.344 djm 1441: if (value <= 0) {
1442: error("%.200s line %d: Bad port '%s'.",
1.300 naddy 1443: filename, linenum, arg);
1.356 djm 1444: goto out;
1.344 djm 1445: }
1.300 naddy 1446: if (*activep && options->port == -1)
1447: options->port = value;
1448: break;
1449:
1450: case oConnectionAttempts:
1451: intptr = &options->connection_attempts;
1.17 markus 1452: parse_int:
1.356 djm 1453: arg = argv_next(&ac, &av);
1.344 djm 1454: if ((errstr = atoi_err(arg, &value)) != NULL) {
1455: error("%s line %d: integer value %s.",
1.281 dtucker 1456: filename, linenum, errstr);
1.356 djm 1457: goto out;
1.344 djm 1458: }
1.17 markus 1459: if (*activep && *intptr == -1)
1460: *intptr = value;
1461: break;
1462:
1.25 markus 1463: case oCiphers:
1.356 djm 1464: arg = argv_next(&ac, &av);
1.344 djm 1465: if (!arg || *arg == '\0') {
1466: error("%.200s line %d: Missing argument.",
1467: filename, linenum);
1.356 djm 1468: goto out;
1.344 djm 1469: }
1.309 naddy 1470: if (*arg != '-' &&
1.344 djm 1471: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)){
1472: error("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1473: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1474: goto out;
1.344 djm 1475: }
1.25 markus 1476: if (*activep && options->ciphers == NULL)
1.38 provos 1477: options->ciphers = xstrdup(arg);
1.25 markus 1478: break;
1479:
1.62 markus 1480: case oMacs:
1.356 djm 1481: arg = argv_next(&ac, &av);
1.344 djm 1482: if (!arg || *arg == '\0') {
1483: error("%.200s line %d: Missing argument.",
1484: filename, linenum);
1.356 djm 1485: goto out;
1.344 djm 1486: }
1.309 naddy 1487: if (*arg != '-' &&
1.344 djm 1488: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg)) {
1489: error("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.93 deraadt 1490: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1491: goto out;
1.344 djm 1492: }
1.62 markus 1493: if (*activep && options->macs == NULL)
1494: options->macs = xstrdup(arg);
1495: break;
1496:
1.189 djm 1497: case oKexAlgorithms:
1.356 djm 1498: arg = argv_next(&ac, &av);
1.344 djm 1499: if (!arg || *arg == '\0') {
1500: error("%.200s line %d: Missing argument.",
1.189 djm 1501: filename, linenum);
1.356 djm 1502: goto out;
1.344 djm 1503: }
1.268 djm 1504: if (*arg != '-' &&
1.309 naddy 1505: !kex_names_valid(*arg == '+' || *arg == '^' ?
1.344 djm 1506: arg + 1 : arg)) {
1507: error("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1.189 djm 1508: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1509: goto out;
1.344 djm 1510: }
1.189 djm 1511: if (*activep && options->kex_algorithms == NULL)
1512: options->kex_algorithms = xstrdup(arg);
1513: break;
1514:
1.76 markus 1515: case oHostKeyAlgorithms:
1.238 markus 1516: charptr = &options->hostkeyalgorithms;
1.377 djm 1517: ca_only = 0;
1.349 dtucker 1518: parse_pubkey_algos:
1.356 djm 1519: arg = argv_next(&ac, &av);
1.344 djm 1520: if (!arg || *arg == '\0') {
1521: error("%.200s line %d: Missing argument.",
1.238 markus 1522: filename, linenum);
1.356 djm 1523: goto out;
1.344 djm 1524: }
1.268 djm 1525: if (*arg != '-' &&
1.309 naddy 1526: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1.377 djm 1527: arg + 1 : arg, 1, ca_only)) {
1.344 djm 1528: error("%s line %d: Bad key types '%s'.",
1529: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1530: goto out;
1.344 djm 1531: }
1.238 markus 1532: if (*activep && *charptr == NULL)
1533: *charptr = xstrdup(arg);
1.76 markus 1534: break;
1535:
1.298 djm 1536: case oCASignatureAlgorithms:
1537: charptr = &options->ca_sign_algorithms;
1.377 djm 1538: ca_only = 1;
1.349 dtucker 1539: goto parse_pubkey_algos;
1.298 djm 1540:
1.17 markus 1541: case oLogLevel:
1.164 dtucker 1542: log_level_ptr = &options->log_level;
1.356 djm 1543: arg = argv_next(&ac, &av);
1.38 provos 1544: value = log_level_number(arg);
1.344 djm 1545: if (value == SYSLOG_LEVEL_NOT_SET) {
1546: error("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1547: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1548: goto out;
1.344 djm 1549: }
1.164 dtucker 1550: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1551: *log_level_ptr = (LogLevel) value;
1.17 markus 1552: break;
1553:
1.271 dtucker 1554: case oLogFacility:
1555: log_facility_ptr = &options->log_facility;
1.356 djm 1556: arg = argv_next(&ac, &av);
1.271 dtucker 1557: value = log_facility_number(arg);
1.344 djm 1558: if (value == SYSLOG_FACILITY_NOT_SET) {
1559: error("%.200s line %d: unsupported log facility '%s'",
1.271 dtucker 1560: filename, linenum, arg ? arg : "<NONE>");
1.356 djm 1561: goto out;
1.344 djm 1562: }
1.271 dtucker 1563: if (*log_facility_ptr == -1)
1564: *log_facility_ptr = (SyslogFacility) value;
1565: break;
1566:
1.339 djm 1567: case oLogVerbose:
1568: cppptr = &options->log_verbose;
1569: uintptr = &options->num_log_verbose;
1.356 djm 1570: i = 0;
1571: while ((arg = argv_next(&ac, &av)) != NULL) {
1572: if (*arg == '\0') {
1573: error("%s line %d: keyword %s empty argument",
1574: filename, linenum, keyword);
1575: goto out;
1576: }
1577: /* Allow "none" only in first position */
1578: if (strcasecmp(arg, "none") == 0) {
1579: if (i > 0 || ac > 0) {
1580: error("%s line %d: keyword %s \"none\" "
1581: "argument must appear alone.",
1582: filename, linenum, keyword);
1583: goto out;
1584: }
1585: }
1586: i++;
1587: if (*activep && *uintptr == 0) {
1.339 djm 1588: *cppptr = xrecallocarray(*cppptr, *uintptr,
1589: *uintptr + 1, sizeof(**cppptr));
1590: (*cppptr)[(*uintptr)++] = xstrdup(arg);
1591: }
1592: }
1.356 djm 1593: break;
1.339 djm 1594:
1.88 stevesk 1595: case oLocalForward:
1.17 markus 1596: case oRemoteForward:
1.168 stevesk 1597: case oDynamicForward:
1.356 djm 1598: arg = argv_next(&ac, &av);
1.344 djm 1599: if (!arg || *arg == '\0') {
1600: error("%.200s line %d: Missing argument.",
1.88 stevesk 1601: filename, linenum);
1.356 djm 1602: goto out;
1.344 djm 1603: }
1.135 djm 1604:
1.279 markus 1605: remotefwd = (opcode == oRemoteForward);
1606: dynamicfwd = (opcode == oDynamicForward);
1607:
1608: if (!dynamicfwd) {
1.356 djm 1609: arg2 = argv_next(&ac, &av);
1.279 markus 1610: if (arg2 == NULL || *arg2 == '\0') {
1611: if (remotefwd)
1612: dynamicfwd = 1;
1.344 djm 1613: else {
1614: error("%.200s line %d: Missing target "
1.279 markus 1615: "argument.", filename, linenum);
1.356 djm 1616: goto out;
1.344 djm 1617: }
1.279 markus 1618: } else {
1619: /* construct a string for parse_forward */
1620: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1621: arg2);
1622: }
1623: }
1624: if (dynamicfwd)
1.168 stevesk 1625: strlcpy(fwdarg, arg, sizeof(fwdarg));
1626:
1.344 djm 1627: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0) {
1628: error("%.200s line %d: Bad forwarding specification.",
1.88 stevesk 1629: filename, linenum);
1.356 djm 1630: goto out;
1.344 djm 1631: }
1.135 djm 1632:
1.88 stevesk 1633: if (*activep) {
1.279 markus 1634: if (remotefwd) {
1635: add_remote_forward(options, &fwd);
1636: } else {
1.135 djm 1637: add_local_forward(options, &fwd);
1.279 markus 1638: }
1.88 stevesk 1639: }
1.17 markus 1640: break;
1.71 markus 1641:
1.351 markus 1642: case oPermitRemoteOpen:
1643: uintptr = &options->num_permitted_remote_opens;
1644: cppptr = &options->permitted_remote_opens;
1.385 ! djm 1645: found = *uintptr == 0;
1.356 djm 1646: while ((arg = argv_next(&ac, &av)) != NULL) {
1.351 markus 1647: arg2 = xstrdup(arg);
1.371 djm 1648: /* Allow any/none only in first position */
1649: if (strcasecmp(arg, "none") == 0 ||
1650: strcasecmp(arg, "any") == 0) {
1.385 ! djm 1651: if (nstrs > 0 || ac > 0) {
1.371 djm 1652: error("%s line %d: keyword %s \"%s\" "
1653: "argument must appear alone.",
1654: filename, linenum, keyword, arg);
1.376 djm 1655: free(arg2);
1.371 djm 1656: goto out;
1657: }
1658: } else {
1659: p = hpdelim(&arg);
1660: if (p == NULL) {
1661: fatal("%s line %d: missing host in %s",
1662: filename, linenum,
1663: lookup_opcode_name(opcode));
1664: }
1665: p = cleanhostname(p);
1666: /*
1667: * don't want to use permitopen_port to avoid
1668: * dependency on channels.[ch] here.
1669: */
1670: if (arg == NULL || (strcmp(arg, "*") != 0 &&
1671: a2port(arg) <= 0)) {
1672: fatal("%s line %d: bad port number "
1673: "in %s", filename, linenum,
1674: lookup_opcode_name(opcode));
1675: }
1.351 markus 1676: }
1.385 ! djm 1677: opt_array_append(filename, linenum,
! 1678: lookup_opcode_name(opcode),
! 1679: &strs, &nstrs, arg2);
1.351 markus 1680: free(arg2);
1681: }
1.385 ! djm 1682: if (nstrs == 0)
1.371 djm 1683: fatal("%s line %d: missing %s specification",
1684: filename, linenum, lookup_opcode_name(opcode));
1.385 ! djm 1685: if (found && *activep) {
! 1686: *cppptr = strs;
! 1687: *uintptr = nstrs;
! 1688: strs = NULL; /* transferred */
! 1689: nstrs = 0;
! 1690: }
1.351 markus 1691: break;
1692:
1.90 stevesk 1693: case oClearAllForwardings:
1694: intptr = &options->clear_forwardings;
1695: goto parse_flag;
1696:
1.17 markus 1697: case oHost:
1.344 djm 1698: if (cmdline) {
1699: error("Host directive not supported as a command-line "
1.206 djm 1700: "option");
1.356 djm 1701: goto out;
1.344 djm 1702: }
1.17 markus 1703: *activep = 0;
1.191 djm 1704: arg2 = NULL;
1.356 djm 1705: while ((arg = argv_next(&ac, &av)) != NULL) {
1706: if (*arg == '\0') {
1707: error("%s line %d: keyword %s empty argument",
1708: filename, linenum, keyword);
1709: goto out;
1710: }
1711: if ((flags & SSHCONF_NEVERMATCH) != 0) {
1712: argv_consume(&ac);
1.252 djm 1713: break;
1.356 djm 1714: }
1.191 djm 1715: negated = *arg == '!';
1716: if (negated)
1717: arg++;
1.38 provos 1718: if (match_pattern(host, arg)) {
1.191 djm 1719: if (negated) {
1720: debug("%.200s line %d: Skipping Host "
1721: "block because of negated match "
1722: "for %.100s", filename, linenum,
1723: arg);
1724: *activep = 0;
1.356 djm 1725: argv_consume(&ac);
1.191 djm 1726: break;
1727: }
1728: if (!*activep)
1729: arg2 = arg; /* logged below */
1.17 markus 1730: *activep = 1;
1731: }
1.191 djm 1732: }
1733: if (*activep)
1734: debug("%.200s line %d: Applying options for %.100s",
1735: filename, linenum, arg2);
1.356 djm 1736: break;
1.17 markus 1737:
1.206 djm 1738: case oMatch:
1.344 djm 1739: if (cmdline) {
1740: error("Host directive not supported as a command-line "
1.206 djm 1741: "option");
1.356 djm 1742: goto out;
1.344 djm 1743: }
1.356 djm 1744: value = match_cfg_line(options, &str, pw, host, original_host,
1.302 djm 1745: flags & SSHCONF_FINAL, want_final_pass,
1746: filename, linenum);
1.344 djm 1747: if (value < 0) {
1748: error("%.200s line %d: Bad Match condition", filename,
1.206 djm 1749: linenum);
1.356 djm 1750: goto out;
1.344 djm 1751: }
1.252 djm 1752: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.356 djm 1753: /*
1754: * If match_cfg_line() didn't consume all its arguments then
1755: * arrange for the extra arguments check below to fail.
1756: */
1757:
1758: if (str == NULL || *str == '\0')
1759: argv_consume(&ac);
1.206 djm 1760: break;
1761:
1.17 markus 1762: case oEscapeChar:
1763: intptr = &options->escape_char;
1.356 djm 1764: arg = argv_next(&ac, &av);
1.344 djm 1765: if (!arg || *arg == '\0') {
1766: error("%.200s line %d: Missing argument.",
1767: filename, linenum);
1.356 djm 1768: goto out;
1.344 djm 1769: }
1.236 djm 1770: if (strcmp(arg, "none") == 0)
1771: value = SSH_ESCAPECHAR_NONE;
1772: else if (arg[1] == '\0')
1773: value = (u_char) arg[0];
1774: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1775: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1776: value = (u_char) arg[1] & 31;
1.17 markus 1777: else {
1.344 djm 1778: error("%.200s line %d: Bad escape character.",
1.93 deraadt 1779: filename, linenum);
1.356 djm 1780: goto out;
1.17 markus 1781: }
1782: if (*activep && *intptr == -1)
1783: *intptr = value;
1.112 djm 1784: break;
1785:
1786: case oAddressFamily:
1.114 djm 1787: intptr = &options->address_family;
1.207 djm 1788: multistate_ptr = multistate_addressfamily;
1789: goto parse_multistate;
1.17 markus 1790:
1.101 markus 1791: case oEnableSSHKeysign:
1792: intptr = &options->enable_ssh_keysign;
1793: goto parse_flag;
1794:
1.128 markus 1795: case oIdentitiesOnly:
1796: intptr = &options->identities_only;
1797: goto parse_flag;
1798:
1.127 markus 1799: case oServerAliveInterval:
1800: intptr = &options->server_alive_interval;
1801: goto parse_time;
1802:
1803: case oServerAliveCountMax:
1804: intptr = &options->server_alive_count_max;
1805: goto parse_int;
1806:
1.130 djm 1807: case oSendEnv:
1.385 ! djm 1808: /* XXX appends to list; doesn't respect first-match-wins */
1.356 djm 1809: while ((arg = argv_next(&ac, &av)) != NULL) {
1810: if (*arg == '\0' || strchr(arg, '=') != NULL) {
1.344 djm 1811: error("%s line %d: Invalid environment name.",
1.130 djm 1812: filename, linenum);
1.356 djm 1813: goto out;
1.344 djm 1814: }
1.385 ! djm 1815: found = 1;
1.137 djm 1816: if (!*activep)
1817: continue;
1.286 djm 1818: if (*arg == '-') {
1819: /* Removing an env var */
1820: rm_env(options, arg, filename, linenum);
1821: continue;
1822: }
1.368 djm 1823: opt_array_append(filename, linenum,
1824: lookup_opcode_name(opcode),
1825: &options->send_env, &options->num_send_env, arg);
1.130 djm 1826: }
1.385 ! djm 1827: if (!found) {
! 1828: fatal("%s line %d: no %s specified",
! 1829: filename, linenum, keyword);
! 1830: }
1.130 djm 1831: break;
1832:
1.290 djm 1833: case oSetEnv:
1.385 ! djm 1834: found = options->num_setenv == 0;
1.356 djm 1835: while ((arg = argv_next(&ac, &av)) != NULL) {
1.344 djm 1836: if (strchr(arg, '=') == NULL) {
1837: error("%s line %d: Invalid SetEnv.",
1.290 djm 1838: filename, linenum);
1.356 djm 1839: goto out;
1.344 djm 1840: }
1.385 ! djm 1841: if (lookup_setenv_in_list(arg, strs, nstrs) != NULL) {
1.368 djm 1842: debug2("%s line %d: ignoring duplicate env "
1843: "name \"%.64s\"", filename, linenum, arg);
1844: continue;
1.344 djm 1845: }
1.368 djm 1846: opt_array_append(filename, linenum,
1847: lookup_opcode_name(opcode),
1.385 ! djm 1848: &strs, &nstrs, arg);
! 1849: }
! 1850: if (nstrs == 0) {
! 1851: fatal("%s line %d: no %s specified",
! 1852: filename, linenum, keyword);
! 1853: }
! 1854: if (found && *activep) {
! 1855: options->setenv = strs;
! 1856: options->num_setenv = nstrs;
! 1857: strs = NULL; /* transferred */
! 1858: nstrs = 0;
1.290 djm 1859: }
1860: break;
1861:
1.132 djm 1862: case oControlPath:
1863: charptr = &options->control_path;
1864: goto parse_string;
1865:
1866: case oControlMaster:
1867: intptr = &options->control_master;
1.207 djm 1868: multistate_ptr = multistate_controlmaster;
1869: goto parse_multistate;
1.132 djm 1870:
1.187 djm 1871: case oControlPersist:
1872: /* no/false/yes/true, or a time spec */
1873: intptr = &options->control_persist;
1.356 djm 1874: arg = argv_next(&ac, &av);
1.344 djm 1875: if (!arg || *arg == '\0') {
1876: error("%.200s line %d: Missing ControlPersist"
1.187 djm 1877: " argument.", filename, linenum);
1.356 djm 1878: goto out;
1.344 djm 1879: }
1.187 djm 1880: value = 0;
1881: value2 = 0; /* timeout */
1882: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1883: value = 0;
1884: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1885: value = 1;
1886: else if ((value2 = convtime(arg)) >= 0)
1887: value = 1;
1.344 djm 1888: else {
1889: error("%.200s line %d: Bad ControlPersist argument.",
1.187 djm 1890: filename, linenum);
1.356 djm 1891: goto out;
1.344 djm 1892: }
1.187 djm 1893: if (*activep && *intptr == -1) {
1894: *intptr = value;
1895: options->control_persist_timeout = value2;
1896: }
1897: break;
1898:
1.136 djm 1899: case oHashKnownHosts:
1900: intptr = &options->hash_known_hosts;
1901: goto parse_flag;
1902:
1.144 reyk 1903: case oTunnel:
1904: intptr = &options->tun_open;
1.207 djm 1905: multistate_ptr = multistate_tunnel;
1906: goto parse_multistate;
1.144 reyk 1907:
1908: case oTunnelDevice:
1.356 djm 1909: arg = argv_next(&ac, &av);
1.344 djm 1910: if (!arg || *arg == '\0') {
1911: error("%.200s line %d: Missing argument.",
1912: filename, linenum);
1.356 djm 1913: goto out;
1.344 djm 1914: }
1.144 reyk 1915: value = a2tun(arg, &value2);
1.344 djm 1916: if (value == SSH_TUNID_ERR) {
1917: error("%.200s line %d: Bad tun device.",
1918: filename, linenum);
1.356 djm 1919: goto out;
1.344 djm 1920: }
1.355 dtucker 1921: if (*activep && options->tun_local == -1) {
1.144 reyk 1922: options->tun_local = value;
1923: options->tun_remote = value2;
1924: }
1925: break;
1926:
1927: case oLocalCommand:
1928: charptr = &options->local_command;
1929: goto parse_command;
1930:
1931: case oPermitLocalCommand:
1932: intptr = &options->permit_local_command;
1933: goto parse_flag;
1934:
1.277 bluhm 1935: case oRemoteCommand:
1936: charptr = &options->remote_command;
1937: goto parse_command;
1938:
1.167 grunk 1939: case oVisualHostKey:
1940: intptr = &options->visual_host_key;
1941: goto parse_flag;
1942:
1.252 djm 1943: case oInclude:
1.344 djm 1944: if (cmdline) {
1945: error("Include directive not supported as a "
1.252 djm 1946: "command-line option");
1.356 djm 1947: goto out;
1.344 djm 1948: }
1.252 djm 1949: value = 0;
1.356 djm 1950: while ((arg = argv_next(&ac, &av)) != NULL) {
1951: if (*arg == '\0') {
1952: error("%s line %d: keyword %s empty argument",
1953: filename, linenum, keyword);
1954: goto out;
1955: }
1.252 djm 1956: /*
1957: * Ensure all paths are anchored. User configuration
1958: * files may begin with '~/' but system configurations
1959: * must not. If the path is relative, then treat it
1960: * as living in ~/.ssh for user configurations or
1961: * /etc/ssh for system ones.
1962: */
1.344 djm 1963: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0) {
1964: error("%.200s line %d: bad include path %s.",
1.252 djm 1965: filename, linenum, arg);
1.356 djm 1966: goto out;
1.344 djm 1967: }
1.301 djm 1968: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1969: xasprintf(&arg2, "%s/%s",
1970: (flags & SSHCONF_USERCONF) ?
1971: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1972: } else
1973: arg2 = xstrdup(arg);
1974: memset(&gl, 0, sizeof(gl));
1975: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1976: if (r == GLOB_NOMATCH) {
1977: debug("%.200s line %d: include %s matched no "
1978: "files",filename, linenum, arg2);
1.269 dtucker 1979: free(arg2);
1.252 djm 1980: continue;
1.344 djm 1981: } else if (r != 0) {
1982: error("%.200s line %d: glob failed for %s.",
1.252 djm 1983: filename, linenum, arg2);
1.356 djm 1984: goto out;
1.344 djm 1985: }
1.252 djm 1986: free(arg2);
1987: oactive = *activep;
1.313 deraadt 1988: for (i = 0; i < gl.gl_pathc; i++) {
1.252 djm 1989: debug3("%.200s line %d: Including file %s "
1990: "depth %d%s", filename, linenum,
1991: gl.gl_pathv[i], depth,
1992: oactive ? "" : " (parse only)");
1993: r = read_config_file_depth(gl.gl_pathv[i],
1994: pw, host, original_host, options,
1995: flags | SSHCONF_CHECKPERM |
1996: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1997: activep, want_final_pass, depth + 1);
1.264 djm 1998: if (r != 1 && errno != ENOENT) {
1.344 djm 1999: error("Can't open user config file "
1.263 djm 2000: "%.100s: %.100s", gl.gl_pathv[i],
2001: strerror(errno));
1.344 djm 2002: globfree(&gl);
1.356 djm 2003: goto out;
1.263 djm 2004: }
1.252 djm 2005: /*
2006: * don't let Match in includes clobber the
2007: * containing file's Match state.
2008: */
2009: *activep = oactive;
2010: if (r != 1)
2011: value = -1;
2012: }
2013: globfree(&gl);
2014: }
2015: if (value != 0)
1.356 djm 2016: ret = value;
1.252 djm 2017: break;
2018:
1.190 djm 2019: case oIPQoS:
1.356 djm 2020: arg = argv_next(&ac, &av);
1.344 djm 2021: if ((value = parse_ipqos(arg)) == -1) {
2022: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 2023: filename, linenum, arg);
1.356 djm 2024: goto out;
1.344 djm 2025: }
1.356 djm 2026: arg = argv_next(&ac, &av);
1.190 djm 2027: if (arg == NULL)
2028: value2 = value;
1.344 djm 2029: else if ((value2 = parse_ipqos(arg)) == -1) {
2030: error("%s line %d: Bad IPQoS value: %s",
1.190 djm 2031: filename, linenum, arg);
1.356 djm 2032: goto out;
1.344 djm 2033: }
1.355 dtucker 2034: if (*activep && options->ip_qos_interactive == -1) {
1.190 djm 2035: options->ip_qos_interactive = value;
2036: options->ip_qos_bulk = value2;
2037: }
2038: break;
2039:
1.192 djm 2040: case oRequestTTY:
2041: intptr = &options->request_tty;
1.207 djm 2042: multistate_ptr = multistate_requesttty;
2043: goto parse_multistate;
1.192 djm 2044:
1.359 djm 2045: case oSessionType:
2046: intptr = &options->session_type;
2047: multistate_ptr = multistate_sessiontype;
2048: goto parse_multistate;
2049:
1.360 djm 2050: case oStdinNull:
2051: intptr = &options->stdin_null;
2052: goto parse_flag;
2053:
1.361 djm 2054: case oForkAfterAuthentication:
2055: intptr = &options->fork_after_authentication;
2056: goto parse_flag;
2057:
1.199 djm 2058: case oIgnoreUnknown:
2059: charptr = &options->ignored_unknown;
2060: goto parse_string;
2061:
1.205 djm 2062: case oProxyUseFdpass:
2063: intptr = &options->proxy_use_fdpass;
2064: goto parse_flag;
2065:
1.208 djm 2066: case oCanonicalDomains:
1.385 ! djm 2067: found = options->num_canonical_domains == 0;
1.356 djm 2068: while ((arg = argv_next(&ac, &av)) != NULL) {
2069: /* Allow "none" only in first position */
2070: if (strcasecmp(arg, "none") == 0) {
1.385 ! djm 2071: if (nstrs > 0 || ac > 0) {
1.356 djm 2072: error("%s line %d: keyword %s \"none\" "
2073: "argument must appear alone.",
2074: filename, linenum, keyword);
2075: goto out;
2076: }
2077: }
1.280 millert 2078: if (!valid_domain(arg, 1, &errstr)) {
1.344 djm 2079: error("%s line %d: %s", filename, linenum,
1.280 millert 2080: errstr);
1.356 djm 2081: goto out;
1.280 millert 2082: }
1.385 ! djm 2083: opt_array_append(filename, linenum, keyword,
! 2084: &strs, &nstrs, arg);
! 2085: }
! 2086: if (nstrs == 0) {
! 2087: fatal("%s line %d: no %s specified",
! 2088: filename, linenum, keyword);
! 2089: }
! 2090: if (found && *activep) {
! 2091: options->canonical_domains = strs;
! 2092: options->num_canonical_domains = nstrs;
! 2093: strs = NULL; /* transferred */
! 2094: nstrs = 0;
1.208 djm 2095: }
2096: break;
2097:
1.209 djm 2098: case oCanonicalizePermittedCNAMEs:
1.385 ! djm 2099: found = options->num_permitted_cnames == 0;
1.356 djm 2100: while ((arg = argv_next(&ac, &av)) != NULL) {
1.362 djm 2101: /*
2102: * Either 'none' (only in first position), '*' for
2103: * everything or 'list:list'
2104: */
2105: if (strcasecmp(arg, "none") == 0) {
1.385 ! djm 2106: if (ncnames > 0 || ac > 0) {
1.362 djm 2107: error("%s line %d: keyword %s \"none\" "
2108: "argument must appear alone.",
2109: filename, linenum, keyword);
2110: goto out;
2111: }
2112: arg2 = "";
2113: } else if (strcmp(arg, "*") == 0) {
1.208 djm 2114: arg2 = arg;
1.362 djm 2115: } else {
1.208 djm 2116: lowercase(arg);
2117: if ((arg2 = strchr(arg, ':')) == NULL ||
2118: arg2[1] == '\0') {
1.344 djm 2119: error("%s line %d: "
1.208 djm 2120: "Invalid permitted CNAME \"%s\"",
2121: filename, linenum, arg);
1.356 djm 2122: goto out;
1.208 djm 2123: }
2124: *arg2 = '\0';
2125: arg2++;
2126: }
1.385 ! djm 2127: cnames = xrecallocarray(cnames, ncnames, ncnames + 1,
! 2128: sizeof(*cnames));
! 2129: cnames[ncnames].source_list = xstrdup(arg);
! 2130: cnames[ncnames].target_list = xstrdup(arg2);
! 2131: ncnames++;
! 2132: }
! 2133: if (ncnames == 0) {
! 2134: fatal("%s line %d: no %s specified",
! 2135: filename, linenum, keyword);
! 2136: }
! 2137: if (found && *activep) {
! 2138: options->permitted_cnames = cnames;
! 2139: options->num_permitted_cnames = ncnames;
! 2140: } else {
! 2141: for (i = 0; i < ncnames; i++) {
! 2142: free(cnames[i].source_list);
! 2143: free(cnames[i].target_list);
1.344 djm 2144: }
1.385 ! djm 2145: free(cnames);
1.208 djm 2146: }
2147: break;
2148:
1.209 djm 2149: case oCanonicalizeHostname:
2150: intptr = &options->canonicalize_hostname;
2151: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 2152: goto parse_multistate;
2153:
1.209 djm 2154: case oCanonicalizeMaxDots:
2155: intptr = &options->canonicalize_max_dots;
1.208 djm 2156: goto parse_int;
2157:
1.209 djm 2158: case oCanonicalizeFallbackLocal:
2159: intptr = &options->canonicalize_fallback_local;
1.208 djm 2160: goto parse_flag;
2161:
1.220 millert 2162: case oStreamLocalBindMask:
1.356 djm 2163: arg = argv_next(&ac, &av);
1.344 djm 2164: if (!arg || *arg == '\0') {
2165: error("%.200s line %d: Missing StreamLocalBindMask "
2166: "argument.", filename, linenum);
1.356 djm 2167: goto out;
1.344 djm 2168: }
1.220 millert 2169: /* Parse mode in octal format */
2170: value = strtol(arg, &endofnumber, 8);
1.344 djm 2171: if (arg == endofnumber || value < 0 || value > 0777) {
2172: error("%.200s line %d: Bad mask.", filename, linenum);
1.356 djm 2173: goto out;
1.344 djm 2174: }
1.220 millert 2175: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
2176: break;
2177:
2178: case oStreamLocalBindUnlink:
2179: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2180: goto parse_flag;
2181:
1.223 djm 2182: case oRevokedHostKeys:
2183: charptr = &options->revoked_host_keys;
2184: goto parse_string;
2185:
1.224 djm 2186: case oFingerprintHash:
1.225 djm 2187: intptr = &options->fingerprint_hash;
1.356 djm 2188: arg = argv_next(&ac, &av);
1.344 djm 2189: if (!arg || *arg == '\0') {
2190: error("%.200s line %d: Missing argument.",
1.224 djm 2191: filename, linenum);
1.356 djm 2192: goto out;
1.344 djm 2193: }
2194: if ((value = ssh_digest_alg_by_name(arg)) == -1) {
2195: error("%.200s line %d: Invalid hash algorithm \"%s\".",
1.224 djm 2196: filename, linenum, arg);
1.356 djm 2197: goto out;
1.344 djm 2198: }
1.225 djm 2199: if (*activep && *intptr == -1)
2200: *intptr = value;
1.224 djm 2201: break;
2202:
1.229 djm 2203: case oUpdateHostkeys:
2204: intptr = &options->update_hostkeys;
1.232 djm 2205: multistate_ptr = multistate_yesnoask;
2206: goto parse_multistate;
1.229 djm 2207:
1.350 dtucker 2208: case oHostbasedAcceptedAlgorithms:
2209: charptr = &options->hostbased_accepted_algos;
1.377 djm 2210: ca_only = 0;
1.349 dtucker 2211: goto parse_pubkey_algos;
1.238 markus 2212:
1.349 dtucker 2213: case oPubkeyAcceptedAlgorithms:
2214: charptr = &options->pubkey_accepted_algos;
1.377 djm 2215: ca_only = 0;
1.349 dtucker 2216: goto parse_pubkey_algos;
1.230 djm 2217:
1.246 jcs 2218: case oAddKeysToAgent:
1.356 djm 2219: arg = argv_next(&ac, &av);
2220: arg2 = argv_next(&ac, &av);
1.334 djm 2221: value = parse_multistate_value(arg, filename, linenum,
1.353 djm 2222: multistate_yesnoaskconfirm);
1.334 djm 2223: value2 = 0; /* unlimited lifespan by default */
2224: if (value == 3 && arg2 != NULL) {
2225: /* allow "AddKeysToAgent confirm 5m" */
1.375 dtucker 2226: if ((value2 = convtime(arg2)) == -1) {
1.344 djm 2227: error("%s line %d: invalid time value.",
1.334 djm 2228: filename, linenum);
1.356 djm 2229: goto out;
1.344 djm 2230: }
1.334 djm 2231: } else if (value == -1 && arg2 == NULL) {
1.375 dtucker 2232: if ((value2 = convtime(arg)) == -1) {
1.344 djm 2233: error("%s line %d: unsupported option",
1.334 djm 2234: filename, linenum);
1.356 djm 2235: goto out;
1.344 djm 2236: }
1.334 djm 2237: value = 1; /* yes */
2238: } else if (value == -1 || arg2 != NULL) {
1.344 djm 2239: error("%s line %d: unsupported option",
1.334 djm 2240: filename, linenum);
1.356 djm 2241: goto out;
1.334 djm 2242: }
2243: if (*activep && options->add_keys_to_agent == -1) {
2244: options->add_keys_to_agent = value;
2245: options->add_keys_to_agent_lifespan = value2;
2246: }
2247: break;
1.246 jcs 2248:
1.253 markus 2249: case oIdentityAgent:
2250: charptr = &options->identity_agent;
1.356 djm 2251: arg = argv_next(&ac, &av);
1.344 djm 2252: if (!arg || *arg == '\0') {
2253: error("%.200s line %d: Missing argument.",
1.299 djm 2254: filename, linenum);
1.356 djm 2255: goto out;
1.344 djm 2256: }
1.319 djm 2257: parse_agent_path:
1.299 djm 2258: /* Extra validation if the string represents an env var. */
1.344 djm 2259: if ((arg2 = dollar_expand(&r, arg)) == NULL || r) {
2260: error("%.200s line %d: Invalid environment expansion "
1.331 dtucker 2261: "%s.", filename, linenum, arg);
1.356 djm 2262: goto out;
1.344 djm 2263: }
1.331 dtucker 2264: free(arg2);
2265: /* check for legacy environment format */
1.344 djm 2266: if (arg[0] == '$' && arg[1] != '{' &&
2267: !valid_env_name(arg + 1)) {
2268: error("%.200s line %d: Invalid environment name %s.",
1.299 djm 2269: filename, linenum, arg);
1.356 djm 2270: goto out;
1.299 djm 2271: }
2272: if (*activep && *charptr == NULL)
2273: *charptr = xstrdup(arg);
2274: break;
1.253 markus 2275:
1.370 djm 2276: case oEnableEscapeCommandline:
2277: intptr = &options->enable_escape_commandline;
2278: goto parse_flag;
2279:
1.369 djm 2280: case oRequiredRSASize:
2281: intptr = &options->required_rsa_size;
2282: goto parse_int;
2283:
1.381 djm 2284: case oObscureKeystrokeTiming:
2285: value = -1;
2286: while ((arg = argv_next(&ac, &av)) != NULL) {
2287: if (value != -1) {
2288: error("%s line %d: invalid arguments",
2289: filename, linenum);
2290: goto out;
2291: }
2292: if (strcmp(arg, "yes") == 0 ||
2293: strcmp(arg, "true") == 0)
2294: value = SSH_KEYSTROKE_DEFAULT_INTERVAL_MS;
2295: else if (strcmp(arg, "no") == 0 ||
2296: strcmp(arg, "false") == 0)
2297: value = 0;
2298: else if (strncmp(arg, "interval:", 9) == 0) {
2299: if ((errstr = atoi_err(arg + 9,
2300: &value)) != NULL) {
2301: error("%s line %d: integer value %s.",
2302: filename, linenum, errstr);
2303: goto out;
2304: }
2305: if (value <= 0 || value > 1000) {
2306: error("%s line %d: value out of range.",
2307: filename, linenum);
2308: goto out;
2309: }
2310: } else {
2311: error("%s line %d: unsupported argument \"%s\"",
2312: filename, linenum, arg);
2313: goto out;
2314: }
2315: }
2316: if (value == -1) {
2317: error("%s line %d: missing argument",
2318: filename, linenum);
2319: goto out;
2320: }
2321: intptr = &options->obscure_keystroke_timing_interval;
2322: if (*activep && *intptr == -1)
2323: *intptr = value;
2324: break;
2325:
1.382 djm 2326: case oChannelTimeout:
1.385 ! djm 2327: found = options->num_channel_timeouts == 0;
1.382 djm 2328: while ((arg = argv_next(&ac, &av)) != NULL) {
2329: /* Allow "none" only in first position */
2330: if (strcasecmp(arg, "none") == 0) {
1.385 ! djm 2331: if (nstrs > 0 || ac > 0) {
1.382 djm 2332: error("%s line %d: keyword %s \"none\" "
2333: "argument must appear alone.",
2334: filename, linenum, keyword);
2335: goto out;
2336: }
2337: } else if (parse_pattern_interval(arg,
2338: NULL, NULL) != 0) {
2339: fatal("%s line %d: invalid channel timeout %s",
2340: filename, linenum, arg);
2341: }
2342: opt_array_append(filename, linenum, keyword,
1.385 ! djm 2343: &strs, &nstrs, arg);
! 2344: }
! 2345: if (nstrs == 0) {
! 2346: fatal("%s line %d: no %s specified",
! 2347: filename, linenum, keyword);
! 2348: }
! 2349: if (found && *activep) {
! 2350: options->channel_timeouts = strs;
! 2351: options->num_channel_timeouts = nstrs;
! 2352: strs = NULL; /* transferred */
! 2353: nstrs = 0;
1.382 djm 2354: }
2355: break;
2356:
1.96 markus 2357: case oDeprecated:
1.98 markus 2358: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 2359: filename, linenum, keyword);
1.356 djm 2360: argv_consume(&ac);
2361: break;
1.96 markus 2362:
1.110 jakob 2363: case oUnsupported:
2364: error("%s line %d: Unsupported option \"%s\"",
2365: filename, linenum, keyword);
1.356 djm 2366: argv_consume(&ac);
2367: break;
1.110 jakob 2368:
1.17 markus 2369: default:
1.344 djm 2370: error("%s line %d: Unimplemented opcode %d",
2371: filename, linenum, opcode);
1.356 djm 2372: goto out;
1.17 markus 2373: }
2374:
2375: /* Check that there is no garbage at end of line. */
1.356 djm 2376: if (ac > 0) {
2377: error("%.200s line %d: keyword %s extra arguments "
2378: "at end of line", filename, linenum, keyword);
2379: goto out;
1.39 ho 2380: }
1.356 djm 2381:
2382: /* success */
2383: ret = 0;
2384: out:
1.385 ! djm 2385: opt_array_free2(strs, NULL, nstrs);
1.356 djm 2386: argv_free(oav, oac);
2387: return ret;
1.1 deraadt 2388: }
2389:
1.19 markus 2390: /*
2391: * Reads the config file and modifies the options accordingly. Options
2392: * should already be initialized before this call. This never returns if
1.89 stevesk 2393: * there is an error. If the file does not exist, this returns 0.
1.19 markus 2394: */
1.89 stevesk 2395: int
1.206 djm 2396: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 2397: const char *original_host, Options *options, int flags,
2398: int *want_final_pass)
1.1 deraadt 2399: {
1.252 djm 2400: int active = 1;
2401:
2402: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 2403: options, flags, &active, want_final_pass, 0);
1.252 djm 2404: }
2405:
2406: #define READCONF_MAX_DEPTH 16
2407: static int
2408: read_config_file_depth(const char *filename, struct passwd *pw,
2409: const char *host, const char *original_host, Options *options,
1.302 djm 2410: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 2411: {
1.17 markus 2412: FILE *f;
1.356 djm 2413: char *line = NULL;
1.289 markus 2414: size_t linesize = 0;
1.252 djm 2415: int linenum;
1.17 markus 2416: int bad_options = 0;
2417:
1.252 djm 2418: if (depth < 0 || depth > READCONF_MAX_DEPTH)
2419: fatal("Too many recursive configuration includes");
2420:
1.129 djm 2421: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 2422: return 0;
1.129 djm 2423:
1.196 dtucker 2424: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 2425: struct stat sb;
1.134 deraadt 2426:
1.131 dtucker 2427: if (fstat(fileno(f), &sb) == -1)
1.129 djm 2428: fatal("fstat %s: %s", filename, strerror(errno));
2429: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 2430: (sb.st_mode & 022) != 0))
1.129 djm 2431: fatal("Bad owner or permissions on %s", filename);
2432: }
1.17 markus 2433:
2434: debug("Reading configuration data %.200s", filename);
2435:
1.19 markus 2436: /*
2437: * Mark that we are now processing the options. This flag is turned
2438: * on/off by Host specifications.
2439: */
1.17 markus 2440: linenum = 0;
1.289 markus 2441: while (getline(&line, &linesize, f) != -1) {
1.17 markus 2442: /* Update line number counter. */
2443: linenum++;
1.343 dtucker 2444: /*
2445: * Trim out comments and strip whitespace.
2446: * NB - preserve newlines, they are needed to reproduce
2447: * line numbers later for error messages.
2448: */
1.252 djm 2449: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 2450: line, filename, linenum, activep, flags, want_final_pass,
2451: depth) != 0)
1.17 markus 2452: bad_options++;
2453: }
1.289 markus 2454: free(line);
1.17 markus 2455: fclose(f);
2456: if (bad_options > 0)
1.64 millert 2457: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 2458: filename, bad_options);
1.89 stevesk 2459: return 1;
1.1 deraadt 2460: }
2461:
1.218 djm 2462: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2463: int
2464: option_clear_or_none(const char *o)
2465: {
2466: return o == NULL || strcasecmp(o, "none") == 0;
2467: }
2468:
1.19 markus 2469: /*
1.362 djm 2470: * Returns 1 if CanonicalizePermittedCNAMEs have been specified, 0 otherwise.
2471: * Allowed to be called on non-final configuration.
2472: */
2473: int
2474: config_has_permitted_cnames(Options *options)
2475: {
2476: if (options->num_permitted_cnames == 1 &&
2477: strcasecmp(options->permitted_cnames[0].source_list, "none") == 0 &&
2478: strcmp(options->permitted_cnames[0].target_list, "") == 0)
2479: return 0;
2480: return options->num_permitted_cnames > 0;
2481: }
2482:
2483: /*
1.19 markus 2484: * Initializes options to special values that indicate that they have not yet
2485: * been set. Read_config_file will only set options with this value. Options
2486: * are processed in the following order: command line, user config file,
2487: * system config file. Last, fill_default_options is called.
2488: */
1.1 deraadt 2489:
1.26 markus 2490: void
1.17 markus 2491: initialize_options(Options * options)
1.1 deraadt 2492: {
1.17 markus 2493: memset(options, 'X', sizeof(*options));
1.372 dtucker 2494: options->host_arg = NULL;
1.17 markus 2495: options->forward_agent = -1;
1.319 djm 2496: options->forward_agent_sock_path = NULL;
1.17 markus 2497: options->forward_x11 = -1;
1.123 markus 2498: options->forward_x11_trusted = -1;
1.186 djm 2499: options->forward_x11_timeout = -1;
1.255 dtucker 2500: options->stdio_forward_host = NULL;
2501: options->stdio_forward_port = 0;
1.256 dtucker 2502: options->clear_forwardings = -1;
1.153 markus 2503: options->exit_on_forward_failure = -1;
1.34 markus 2504: options->xauth_location = NULL;
1.220 millert 2505: options->fwd_opts.gateway_ports = -1;
2506: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2507: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 2508: options->pubkey_authentication = -1;
1.118 markus 2509: options->gss_authentication = -1;
2510: options->gss_deleg_creds = -1;
1.17 markus 2511: options->password_authentication = -1;
1.48 markus 2512: options->kbd_interactive_authentication = -1;
2513: options->kbd_interactive_devices = NULL;
1.72 markus 2514: options->hostbased_authentication = -1;
1.17 markus 2515: options->batch_mode = -1;
2516: options->check_host_ip = -1;
2517: options->strict_host_key_checking = -1;
2518: options->compression = -1;
1.126 markus 2519: options->tcp_keep_alive = -1;
1.17 markus 2520: options->port = -1;
1.114 djm 2521: options->address_family = -1;
1.17 markus 2522: options->connection_attempts = -1;
1.111 djm 2523: options->connection_timeout = -1;
1.17 markus 2524: options->number_of_password_prompts = -1;
1.25 markus 2525: options->ciphers = NULL;
1.62 markus 2526: options->macs = NULL;
1.189 djm 2527: options->kex_algorithms = NULL;
1.76 markus 2528: options->hostkeyalgorithms = NULL;
1.298 djm 2529: options->ca_sign_algorithms = NULL;
1.17 markus 2530: options->num_identity_files = 0;
1.344 djm 2531: memset(options->identity_keys, 0, sizeof(options->identity_keys));
1.241 djm 2532: options->num_certificate_files = 0;
1.344 djm 2533: memset(options->certificates, 0, sizeof(options->certificates));
1.17 markus 2534: options->hostname = NULL;
1.52 markus 2535: options->host_key_alias = NULL;
1.17 markus 2536: options->proxy_command = NULL;
1.257 djm 2537: options->jump_user = NULL;
2538: options->jump_host = NULL;
2539: options->jump_port = -1;
2540: options->jump_extra = NULL;
1.17 markus 2541: options->user = NULL;
2542: options->escape_char = -1;
1.193 djm 2543: options->num_system_hostfiles = 0;
2544: options->num_user_hostfiles = 0;
1.185 djm 2545: options->local_forwards = NULL;
1.17 markus 2546: options->num_local_forwards = 0;
1.185 djm 2547: options->remote_forwards = NULL;
1.17 markus 2548: options->num_remote_forwards = 0;
1.351 markus 2549: options->permitted_remote_opens = NULL;
2550: options->num_permitted_remote_opens = 0;
1.271 dtucker 2551: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 2552: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.339 djm 2553: options->num_log_verbose = 0;
2554: options->log_verbose = NULL;
1.67 markus 2555: options->preferred_authentications = NULL;
1.77 markus 2556: options->bind_address = NULL;
1.282 djm 2557: options->bind_interface = NULL;
1.183 markus 2558: options->pkcs11_provider = NULL;
1.310 djm 2559: options->sk_provider = NULL;
1.101 markus 2560: options->enable_ssh_keysign = - 1;
1.91 markus 2561: options->no_host_authentication_for_localhost = - 1;
1.128 markus 2562: options->identities_only = - 1;
1.105 markus 2563: options->rekey_limit = - 1;
1.198 dtucker 2564: options->rekey_interval = -1;
1.107 jakob 2565: options->verify_host_key_dns = -1;
1.127 markus 2566: options->server_alive_interval = -1;
2567: options->server_alive_count_max = -1;
1.290 djm 2568: options->send_env = NULL;
1.130 djm 2569: options->num_send_env = 0;
1.290 djm 2570: options->setenv = NULL;
2571: options->num_setenv = 0;
1.132 djm 2572: options->control_path = NULL;
2573: options->control_master = -1;
1.187 djm 2574: options->control_persist = -1;
2575: options->control_persist_timeout = 0;
1.136 djm 2576: options->hash_known_hosts = -1;
1.144 reyk 2577: options->tun_open = -1;
2578: options->tun_local = -1;
2579: options->tun_remote = -1;
2580: options->local_command = NULL;
2581: options->permit_local_command = -1;
1.277 bluhm 2582: options->remote_command = NULL;
1.246 jcs 2583: options->add_keys_to_agent = -1;
1.334 djm 2584: options->add_keys_to_agent_lifespan = -1;
1.253 markus 2585: options->identity_agent = NULL;
1.167 grunk 2586: options->visual_host_key = -1;
1.190 djm 2587: options->ip_qos_interactive = -1;
2588: options->ip_qos_bulk = -1;
1.192 djm 2589: options->request_tty = -1;
1.359 djm 2590: options->session_type = -1;
1.360 djm 2591: options->stdin_null = -1;
1.361 djm 2592: options->fork_after_authentication = -1;
1.205 djm 2593: options->proxy_use_fdpass = -1;
1.199 djm 2594: options->ignored_unknown = NULL;
1.208 djm 2595: options->num_canonical_domains = 0;
2596: options->num_permitted_cnames = 0;
1.209 djm 2597: options->canonicalize_max_dots = -1;
2598: options->canonicalize_fallback_local = -1;
2599: options->canonicalize_hostname = -1;
1.223 djm 2600: options->revoked_host_keys = NULL;
1.224 djm 2601: options->fingerprint_hash = -1;
1.229 djm 2602: options->update_hostkeys = -1;
1.350 dtucker 2603: options->hostbased_accepted_algos = NULL;
1.349 dtucker 2604: options->pubkey_accepted_algos = NULL;
1.346 djm 2605: options->known_hosts_command = NULL;
1.369 djm 2606: options->required_rsa_size = -1;
1.370 djm 2607: options->enable_escape_commandline = -1;
1.381 djm 2608: options->obscure_keystroke_timing_interval = -1;
1.379 djm 2609: options->tag = NULL;
1.382 djm 2610: options->channel_timeouts = NULL;
2611: options->num_channel_timeouts = 0;
1.1 deraadt 2612: }
2613:
1.19 markus 2614: /*
1.218 djm 2615: * A petite version of fill_default_options() that just fills the options
2616: * needed for hostname canonicalization to proceed.
2617: */
2618: void
2619: fill_default_options_for_canonicalization(Options *options)
2620: {
2621: if (options->canonicalize_max_dots == -1)
2622: options->canonicalize_max_dots = 1;
2623: if (options->canonicalize_fallback_local == -1)
2624: options->canonicalize_fallback_local = 1;
2625: if (options->canonicalize_hostname == -1)
2626: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2627: }
2628:
2629: /*
1.19 markus 2630: * Called after processing other sources of option data, this fills those
2631: * options for which no value has been specified with their default values.
2632: */
1.344 djm 2633: int
1.17 markus 2634: fill_default_options(Options * options)
1.1 deraadt 2635: {
1.298 djm 2636: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.320 dtucker 2637: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.344 djm 2638: int ret = 0, r;
1.292 djm 2639:
1.17 markus 2640: if (options->forward_agent == -1)
1.33 markus 2641: options->forward_agent = 0;
1.17 markus 2642: if (options->forward_x11 == -1)
1.23 markus 2643: options->forward_x11 = 0;
1.123 markus 2644: if (options->forward_x11_trusted == -1)
2645: options->forward_x11_trusted = 0;
1.186 djm 2646: if (options->forward_x11_timeout == -1)
2647: options->forward_x11_timeout = 1200;
1.256 dtucker 2648: /*
2649: * stdio forwarding (-W) changes the default for these but we defer
2650: * setting the values so they can be overridden.
2651: */
1.153 markus 2652: if (options->exit_on_forward_failure == -1)
1.256 dtucker 2653: options->exit_on_forward_failure =
2654: options->stdio_forward_host != NULL ? 1 : 0;
2655: if (options->clear_forwardings == -1)
2656: options->clear_forwardings =
2657: options->stdio_forward_host != NULL ? 1 : 0;
2658: if (options->clear_forwardings == 1)
2659: clear_forwardings(options);
2660:
1.34 markus 2661: if (options->xauth_location == NULL)
1.344 djm 2662: options->xauth_location = xstrdup(_PATH_XAUTH);
1.220 millert 2663: if (options->fwd_opts.gateway_ports == -1)
2664: options->fwd_opts.gateway_ports = 0;
2665: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2666: options->fwd_opts.streamlocal_bind_mask = 0177;
2667: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2668: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 2669: if (options->pubkey_authentication == -1)
1.364 djm 2670: options->pubkey_authentication = SSH_PUBKEY_AUTH_ALL;
1.118 markus 2671: if (options->gss_authentication == -1)
1.122 markus 2672: options->gss_authentication = 0;
1.118 markus 2673: if (options->gss_deleg_creds == -1)
2674: options->gss_deleg_creds = 0;
1.17 markus 2675: if (options->password_authentication == -1)
2676: options->password_authentication = 1;
1.48 markus 2677: if (options->kbd_interactive_authentication == -1)
1.59 markus 2678: options->kbd_interactive_authentication = 1;
1.72 markus 2679: if (options->hostbased_authentication == -1)
2680: options->hostbased_authentication = 0;
1.17 markus 2681: if (options->batch_mode == -1)
2682: options->batch_mode = 0;
2683: if (options->check_host_ip == -1)
1.348 djm 2684: options->check_host_ip = 0;
1.17 markus 2685: if (options->strict_host_key_checking == -1)
1.278 djm 2686: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2687: if (options->compression == -1)
2688: options->compression = 0;
1.126 markus 2689: if (options->tcp_keep_alive == -1)
2690: options->tcp_keep_alive = 1;
1.17 markus 2691: if (options->port == -1)
2692: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2693: if (options->address_family == -1)
2694: options->address_family = AF_UNSPEC;
1.17 markus 2695: if (options->connection_attempts == -1)
1.84 markus 2696: options->connection_attempts = 1;
1.17 markus 2697: if (options->number_of_password_prompts == -1)
2698: options->number_of_password_prompts = 3;
1.76 markus 2699: /* options->hostkeyalgorithms, default set in myproposals.h */
1.334 djm 2700: if (options->add_keys_to_agent == -1) {
1.246 jcs 2701: options->add_keys_to_agent = 0;
1.334 djm 2702: options->add_keys_to_agent_lifespan = 0;
2703: }
1.17 markus 2704: if (options->num_identity_files == 0) {
1.273 djm 2705: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2706: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2707: add_identity_file(options, "~/",
1.310 djm 2708: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2709: add_identity_file(options, "~/",
1.273 djm 2710: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.311 markus 2711: add_identity_file(options, "~/",
2712: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.283 markus 2713: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.384 djm 2714: #ifdef WITH_DSA
1.365 dtucker 2715: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
1.384 djm 2716: #endif
1.27 markus 2717: }
1.17 markus 2718: if (options->escape_char == -1)
2719: options->escape_char = '~';
1.193 djm 2720: if (options->num_system_hostfiles == 0) {
2721: options->system_hostfiles[options->num_system_hostfiles++] =
2722: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2723: options->system_hostfiles[options->num_system_hostfiles++] =
2724: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2725: }
1.336 djm 2726: if (options->update_hostkeys == -1) {
1.338 djm 2727: if (options->verify_host_key_dns <= 0 &&
2728: (options->num_user_hostfiles == 0 ||
1.336 djm 2729: (options->num_user_hostfiles == 1 && strcmp(options->
1.338 djm 2730: user_hostfiles[0], _PATH_SSH_USER_HOSTFILE) == 0)))
1.336 djm 2731: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_YES;
2732: else
1.325 djm 2733: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.336 djm 2734: }
1.193 djm 2735: if (options->num_user_hostfiles == 0) {
2736: options->user_hostfiles[options->num_user_hostfiles++] =
2737: xstrdup(_PATH_SSH_USER_HOSTFILE);
2738: options->user_hostfiles[options->num_user_hostfiles++] =
2739: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2740: }
1.95 markus 2741: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2742: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2743: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2744: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2745: if (options->no_host_authentication_for_localhost == - 1)
2746: options->no_host_authentication_for_localhost = 0;
1.128 markus 2747: if (options->identities_only == -1)
2748: options->identities_only = 0;
1.101 markus 2749: if (options->enable_ssh_keysign == -1)
2750: options->enable_ssh_keysign = 0;
1.105 markus 2751: if (options->rekey_limit == -1)
2752: options->rekey_limit = 0;
1.198 dtucker 2753: if (options->rekey_interval == -1)
2754: options->rekey_interval = 0;
1.107 jakob 2755: if (options->verify_host_key_dns == -1)
2756: options->verify_host_key_dns = 0;
1.127 markus 2757: if (options->server_alive_interval == -1)
2758: options->server_alive_interval = 0;
2759: if (options->server_alive_count_max == -1)
2760: options->server_alive_count_max = 3;
1.132 djm 2761: if (options->control_master == -1)
2762: options->control_master = 0;
1.187 djm 2763: if (options->control_persist == -1) {
2764: options->control_persist = 0;
2765: options->control_persist_timeout = 0;
2766: }
1.136 djm 2767: if (options->hash_known_hosts == -1)
2768: options->hash_known_hosts = 0;
1.144 reyk 2769: if (options->tun_open == -1)
1.145 reyk 2770: options->tun_open = SSH_TUNMODE_NO;
2771: if (options->tun_local == -1)
2772: options->tun_local = SSH_TUNID_ANY;
2773: if (options->tun_remote == -1)
2774: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2775: if (options->permit_local_command == -1)
2776: options->permit_local_command = 0;
1.167 grunk 2777: if (options->visual_host_key == -1)
2778: options->visual_host_key = 0;
1.190 djm 2779: if (options->ip_qos_interactive == -1)
1.284 job 2780: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2781: if (options->ip_qos_bulk == -1)
1.284 job 2782: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2783: if (options->request_tty == -1)
2784: options->request_tty = REQUEST_TTY_AUTO;
1.359 djm 2785: if (options->session_type == -1)
2786: options->session_type = SESSION_TYPE_DEFAULT;
1.360 djm 2787: if (options->stdin_null == -1)
2788: options->stdin_null = 0;
1.361 djm 2789: if (options->fork_after_authentication == -1)
2790: options->fork_after_authentication = 0;
1.205 djm 2791: if (options->proxy_use_fdpass == -1)
2792: options->proxy_use_fdpass = 0;
1.209 djm 2793: if (options->canonicalize_max_dots == -1)
2794: options->canonicalize_max_dots = 1;
2795: if (options->canonicalize_fallback_local == -1)
2796: options->canonicalize_fallback_local = 1;
2797: if (options->canonicalize_hostname == -1)
2798: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2799: if (options->fingerprint_hash == -1)
2800: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.310 djm 2801: if (options->sk_provider == NULL)
1.314 djm 2802: options->sk_provider = xstrdup("internal");
1.369 djm 2803: if (options->required_rsa_size == -1)
2804: options->required_rsa_size = SSH_RSA_MINIMUM_MODULUS_SIZE;
1.370 djm 2805: if (options->enable_escape_commandline == -1)
2806: options->enable_escape_commandline = 0;
1.381 djm 2807: if (options->obscure_keystroke_timing_interval == -1) {
2808: options->obscure_keystroke_timing_interval =
2809: SSH_KEYSTROKE_DEFAULT_INTERVAL_MS;
2810: }
1.292 djm 2811:
2812: /* Expand KEX name lists */
2813: all_cipher = cipher_alg_list(',', 0);
2814: all_mac = mac_alg_list(',');
2815: all_kex = kex_alg_list(',');
2816: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2817: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.320 dtucker 2818: /* remove unsupported algos from default lists */
1.332 djm 2819: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
2820: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
2821: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
2822: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
2823: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2824: #define ASSEMBLE(what, defaults, all) \
2825: do { \
2826: if ((r = kex_assemble_names(&options->what, \
1.344 djm 2827: defaults, all)) != 0) { \
2828: error_fr(r, "%s", #what); \
2829: goto fail; \
2830: } \
1.297 djm 2831: } while (0)
1.320 dtucker 2832: ASSEMBLE(ciphers, def_cipher, all_cipher);
2833: ASSEMBLE(macs, def_mac, all_mac);
2834: ASSEMBLE(kex_algorithms, def_kex, all_kex);
1.350 dtucker 2835: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.349 dtucker 2836: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.320 dtucker 2837: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.297 djm 2838: #undef ASSEMBLE
1.224 djm 2839:
1.207 djm 2840: #define CLEAR_ON_NONE(v) \
2841: do { \
1.218 djm 2842: if (option_clear_or_none(v)) { \
1.207 djm 2843: free(v); \
2844: v = NULL; \
2845: } \
2846: } while(0)
1.382 djm 2847: #define CLEAR_ON_NONE_ARRAY(v, nv, none) \
2848: do { \
2849: if (options->nv == 1 && \
2850: strcasecmp(options->v[0], none) == 0) { \
2851: free(options->v[0]); \
2852: free(options->v); \
2853: options->v = NULL; \
2854: options->nv = 0; \
2855: } \
2856: } while (0)
1.207 djm 2857: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2858: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2859: CLEAR_ON_NONE(options->proxy_command);
2860: CLEAR_ON_NONE(options->control_path);
1.223 djm 2861: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 djm 2862: CLEAR_ON_NONE(options->pkcs11_provider);
1.310 djm 2863: CLEAR_ON_NONE(options->sk_provider);
1.346 djm 2864: CLEAR_ON_NONE(options->known_hosts_command);
1.382 djm 2865: CLEAR_ON_NONE_ARRAY(channel_timeouts, num_channel_timeouts, "none");
2866: #undef CLEAR_ON_NONE
2867: #undef CLEAR_ON_NONE_ARRAY
1.287 djm 2868: if (options->jump_host != NULL &&
2869: strcmp(options->jump_host, "none") == 0 &&
2870: options->jump_port == 0 && options->jump_user == NULL) {
2871: free(options->jump_host);
2872: options->jump_host = NULL;
2873: }
1.362 djm 2874: if (options->num_permitted_cnames == 1 &&
2875: !config_has_permitted_cnames(options)) {
2876: /* clean up CanonicalizePermittedCNAMEs=none */
2877: free(options->permitted_cnames[0].source_list);
2878: free(options->permitted_cnames[0].target_list);
2879: memset(options->permitted_cnames, '\0',
2880: sizeof(*options->permitted_cnames));
2881: options->num_permitted_cnames = 0;
2882: }
1.254 markus 2883: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2884: /* options->user will be set in the main program if appropriate */
2885: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2886: /* options->host_key_alias should not be set by default */
1.67 markus 2887: /* options->preferred_authentications will be set in ssh */
1.344 djm 2888:
2889: /* success */
2890: ret = 0;
2891: fail:
2892: free(all_cipher);
2893: free(all_mac);
2894: free(all_kex);
2895: free(all_key);
2896: free(all_sig);
2897: free(def_cipher);
2898: free(def_mac);
2899: free(def_kex);
2900: free(def_key);
2901: free(def_sig);
2902: return ret;
2903: }
2904:
2905: void
2906: free_options(Options *o)
2907: {
2908: int i;
2909:
2910: if (o == NULL)
2911: return;
2912:
2913: #define FREE_ARRAY(type, n, a) \
2914: do { \
2915: type _i; \
2916: for (_i = 0; _i < (n); _i++) \
2917: free((a)[_i]); \
2918: } while (0)
2919:
2920: free(o->forward_agent_sock_path);
2921: free(o->xauth_location);
2922: FREE_ARRAY(u_int, o->num_log_verbose, o->log_verbose);
2923: free(o->log_verbose);
2924: free(o->ciphers);
2925: free(o->macs);
2926: free(o->hostkeyalgorithms);
2927: free(o->kex_algorithms);
2928: free(o->ca_sign_algorithms);
2929: free(o->hostname);
2930: free(o->host_key_alias);
2931: free(o->proxy_command);
2932: free(o->user);
2933: FREE_ARRAY(u_int, o->num_system_hostfiles, o->system_hostfiles);
2934: FREE_ARRAY(u_int, o->num_user_hostfiles, o->user_hostfiles);
2935: free(o->preferred_authentications);
2936: free(o->bind_address);
2937: free(o->bind_interface);
2938: free(o->pkcs11_provider);
2939: free(o->sk_provider);
2940: for (i = 0; i < o->num_identity_files; i++) {
2941: free(o->identity_files[i]);
2942: sshkey_free(o->identity_keys[i]);
2943: }
2944: for (i = 0; i < o->num_certificate_files; i++) {
2945: free(o->certificate_files[i]);
2946: sshkey_free(o->certificates[i]);
2947: }
2948: free(o->identity_agent);
2949: for (i = 0; i < o->num_local_forwards; i++) {
2950: free(o->local_forwards[i].listen_host);
2951: free(o->local_forwards[i].listen_path);
2952: free(o->local_forwards[i].connect_host);
2953: free(o->local_forwards[i].connect_path);
2954: }
2955: free(o->local_forwards);
2956: for (i = 0; i < o->num_remote_forwards; i++) {
2957: free(o->remote_forwards[i].listen_host);
2958: free(o->remote_forwards[i].listen_path);
2959: free(o->remote_forwards[i].connect_host);
2960: free(o->remote_forwards[i].connect_path);
2961: }
2962: free(o->remote_forwards);
2963: free(o->stdio_forward_host);
1.368 djm 2964: FREE_ARRAY(u_int, o->num_send_env, o->send_env);
1.344 djm 2965: free(o->send_env);
1.368 djm 2966: FREE_ARRAY(u_int, o->num_setenv, o->setenv);
1.344 djm 2967: free(o->setenv);
2968: free(o->control_path);
2969: free(o->local_command);
2970: free(o->remote_command);
2971: FREE_ARRAY(int, o->num_canonical_domains, o->canonical_domains);
2972: for (i = 0; i < o->num_permitted_cnames; i++) {
2973: free(o->permitted_cnames[i].source_list);
2974: free(o->permitted_cnames[i].target_list);
2975: }
2976: free(o->revoked_host_keys);
1.350 dtucker 2977: free(o->hostbased_accepted_algos);
1.349 dtucker 2978: free(o->pubkey_accepted_algos);
1.344 djm 2979: free(o->jump_user);
2980: free(o->jump_host);
2981: free(o->jump_extra);
2982: free(o->ignored_unknown);
2983: explicit_bzero(o, sizeof(*o));
2984: #undef FREE_ARRAY
1.135 djm 2985: }
2986:
1.220 millert 2987: struct fwdarg {
2988: char *arg;
2989: int ispath;
2990: };
2991:
2992: /*
2993: * parse_fwd_field
2994: * parses the next field in a port forwarding specification.
2995: * sets fwd to the parsed field and advances p past the colon
2996: * or sets it to NULL at end of string.
2997: * returns 0 on success, else non-zero.
2998: */
2999: static int
3000: parse_fwd_field(char **p, struct fwdarg *fwd)
3001: {
3002: char *ep, *cp = *p;
3003: int ispath = 0;
3004:
3005: if (*cp == '\0') {
3006: *p = NULL;
3007: return -1; /* end of string */
3008: }
3009:
3010: /*
3011: * A field escaped with square brackets is used literally.
3012: * XXX - allow ']' to be escaped via backslash?
3013: */
3014: if (*cp == '[') {
3015: /* find matching ']' */
3016: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
3017: if (*ep == '/')
3018: ispath = 1;
3019: }
3020: /* no matching ']' or not at end of field. */
3021: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
3022: return -1;
3023: /* NUL terminate the field and advance p past the colon */
3024: *ep++ = '\0';
3025: if (*ep != '\0')
3026: *ep++ = '\0';
3027: fwd->arg = cp + 1;
3028: fwd->ispath = ispath;
3029: *p = ep;
3030: return 0;
3031: }
3032:
3033: for (cp = *p; *cp != '\0'; cp++) {
3034: switch (*cp) {
3035: case '\\':
3036: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 3037: if (*cp == '\0')
3038: return -1;
1.220 millert 3039: break;
3040: case '/':
3041: ispath = 1;
3042: break;
3043: case ':':
3044: *cp++ = '\0';
3045: goto done;
3046: }
3047: }
3048: done:
3049: fwd->arg = *p;
3050: fwd->ispath = ispath;
3051: *p = cp;
3052: return 0;
3053: }
3054:
1.135 djm 3055: /*
3056: * parse_forward
3057: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 3058: * dynamicfwd == 0
1.220 millert 3059: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
3060: * listenpath:connectpath
1.168 stevesk 3061: * dynamicfwd == 1
3062: * [listenhost:]listenport
1.135 djm 3063: * returns number of arguments parsed or zero on error
3064: */
3065: int
1.220 millert 3066: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 3067: {
1.220 millert 3068: struct fwdarg fwdargs[4];
3069: char *p, *cp;
1.331 dtucker 3070: int i, err;
1.135 djm 3071:
1.220 millert 3072: memset(fwd, 0, sizeof(*fwd));
3073: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 3074:
1.331 dtucker 3075: /*
3076: * We expand environment variables before checking if we think they're
3077: * paths so that if ${VAR} expands to a fully qualified path it is
3078: * treated as a path.
3079: */
3080: cp = p = dollar_expand(&err, fwdspec);
3081: if (p == NULL || err)
3082: return 0;
1.135 djm 3083:
3084: /* skip leading spaces */
1.214 deraadt 3085: while (isspace((u_char)*cp))
1.135 djm 3086: cp++;
3087:
1.220 millert 3088: for (i = 0; i < 4; ++i) {
3089: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 3090: break;
1.220 millert 3091: }
1.135 djm 3092:
1.170 stevesk 3093: /* Check for trailing garbage */
1.220 millert 3094: if (cp != NULL && *cp != '\0') {
1.135 djm 3095: i = 0; /* failure */
1.220 millert 3096: }
1.135 djm 3097:
3098: switch (i) {
1.168 stevesk 3099: case 1:
1.220 millert 3100: if (fwdargs[0].ispath) {
3101: fwd->listen_path = xstrdup(fwdargs[0].arg);
3102: fwd->listen_port = PORT_STREAMLOCAL;
3103: } else {
3104: fwd->listen_host = NULL;
3105: fwd->listen_port = a2port(fwdargs[0].arg);
3106: }
1.168 stevesk 3107: fwd->connect_host = xstrdup("socks");
3108: break;
3109:
3110: case 2:
1.220 millert 3111: if (fwdargs[0].ispath && fwdargs[1].ispath) {
3112: fwd->listen_path = xstrdup(fwdargs[0].arg);
3113: fwd->listen_port = PORT_STREAMLOCAL;
3114: fwd->connect_path = xstrdup(fwdargs[1].arg);
3115: fwd->connect_port = PORT_STREAMLOCAL;
3116: } else if (fwdargs[1].ispath) {
3117: fwd->listen_host = NULL;
3118: fwd->listen_port = a2port(fwdargs[0].arg);
3119: fwd->connect_path = xstrdup(fwdargs[1].arg);
3120: fwd->connect_port = PORT_STREAMLOCAL;
3121: } else {
3122: fwd->listen_host = xstrdup(fwdargs[0].arg);
3123: fwd->listen_port = a2port(fwdargs[1].arg);
3124: fwd->connect_host = xstrdup("socks");
3125: }
1.168 stevesk 3126: break;
3127:
1.135 djm 3128: case 3:
1.220 millert 3129: if (fwdargs[0].ispath) {
3130: fwd->listen_path = xstrdup(fwdargs[0].arg);
3131: fwd->listen_port = PORT_STREAMLOCAL;
3132: fwd->connect_host = xstrdup(fwdargs[1].arg);
3133: fwd->connect_port = a2port(fwdargs[2].arg);
3134: } else if (fwdargs[2].ispath) {
3135: fwd->listen_host = xstrdup(fwdargs[0].arg);
3136: fwd->listen_port = a2port(fwdargs[1].arg);
3137: fwd->connect_path = xstrdup(fwdargs[2].arg);
3138: fwd->connect_port = PORT_STREAMLOCAL;
3139: } else {
3140: fwd->listen_host = NULL;
3141: fwd->listen_port = a2port(fwdargs[0].arg);
3142: fwd->connect_host = xstrdup(fwdargs[1].arg);
3143: fwd->connect_port = a2port(fwdargs[2].arg);
3144: }
1.135 djm 3145: break;
3146:
3147: case 4:
1.220 millert 3148: fwd->listen_host = xstrdup(fwdargs[0].arg);
3149: fwd->listen_port = a2port(fwdargs[1].arg);
3150: fwd->connect_host = xstrdup(fwdargs[2].arg);
3151: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 3152: break;
3153: default:
3154: i = 0; /* failure */
3155: }
3156:
1.202 djm 3157: free(p);
1.135 djm 3158:
1.168 stevesk 3159: if (dynamicfwd) {
3160: if (!(i == 1 || i == 2))
3161: goto fail_free;
3162: } else {
1.220 millert 3163: if (!(i == 3 || i == 4)) {
3164: if (fwd->connect_path == NULL &&
3165: fwd->listen_path == NULL)
3166: goto fail_free;
3167: }
3168: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 3169: goto fail_free;
3170: }
3171:
1.220 millert 3172: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
3173: (!remotefwd && fwd->listen_port == 0))
1.135 djm 3174: goto fail_free;
3175: if (fwd->connect_host != NULL &&
3176: strlen(fwd->connect_host) >= NI_MAXHOST)
3177: goto fail_free;
1.356 djm 3178: /*
3179: * XXX - if connecting to a remote socket, max sun len may not
3180: * match this host
3181: */
1.220 millert 3182: if (fwd->connect_path != NULL &&
3183: strlen(fwd->connect_path) >= PATH_MAX_SUN)
3184: goto fail_free;
1.176 djm 3185: if (fwd->listen_host != NULL &&
3186: strlen(fwd->listen_host) >= NI_MAXHOST)
3187: goto fail_free;
1.220 millert 3188: if (fwd->listen_path != NULL &&
3189: strlen(fwd->listen_path) >= PATH_MAX_SUN)
3190: goto fail_free;
1.135 djm 3191:
3192: return (i);
3193:
3194: fail_free:
1.202 djm 3195: free(fwd->connect_host);
3196: fwd->connect_host = NULL;
1.220 millert 3197: free(fwd->connect_path);
3198: fwd->connect_path = NULL;
1.202 djm 3199: free(fwd->listen_host);
3200: fwd->listen_host = NULL;
1.220 millert 3201: free(fwd->listen_path);
3202: fwd->listen_path = NULL;
1.135 djm 3203: return (0);
1.221 djm 3204: }
3205:
1.257 djm 3206: int
3207: parse_jump(const char *s, Options *o, int active)
3208: {
3209: char *orig, *sdup, *cp;
3210: char *host = NULL, *user = NULL;
1.345 djm 3211: int r, ret = -1, port = -1, first;
1.257 djm 3212:
3213: active &= o->proxy_command == NULL && o->jump_host == NULL;
3214:
3215: orig = sdup = xstrdup(s);
1.356 djm 3216:
3217: /* Remove comment and trailing whitespace */
3218: if ((cp = strchr(orig, '#')) != NULL)
3219: *cp = '\0';
3220: rtrim(orig);
3221:
1.258 naddy 3222: first = active;
1.259 djm 3223: do {
1.287 djm 3224: if (strcasecmp(s, "none") == 0)
3225: break;
1.259 djm 3226: if ((cp = strrchr(sdup, ',')) == NULL)
3227: cp = sdup; /* last */
3228: else
3229: *cp++ = '\0';
3230:
1.258 naddy 3231: if (first) {
1.257 djm 3232: /* First argument and configuration is active */
1.345 djm 3233: r = parse_ssh_uri(cp, &user, &host, &port);
3234: if (r == -1 || (r == 1 &&
3235: parse_user_host_port(cp, &user, &host, &port) != 0))
1.257 djm 3236: goto out;
3237: } else {
3238: /* Subsequent argument or inactive configuration */
1.345 djm 3239: r = parse_ssh_uri(cp, NULL, NULL, NULL);
3240: if (r == -1 || (r == 1 &&
3241: parse_user_host_port(cp, NULL, NULL, NULL) != 0))
1.257 djm 3242: goto out;
3243: }
1.258 naddy 3244: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 3245: } while (cp != sdup);
1.257 djm 3246: /* success */
1.258 naddy 3247: if (active) {
1.287 djm 3248: if (strcasecmp(s, "none") == 0) {
3249: o->jump_host = xstrdup("none");
3250: o->jump_port = 0;
3251: } else {
3252: o->jump_user = user;
3253: o->jump_host = host;
3254: o->jump_port = port;
3255: o->proxy_command = xstrdup("none");
3256: user = host = NULL;
3257: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
3258: o->jump_extra = xstrdup(s);
3259: o->jump_extra[cp - s] = '\0';
3260: }
1.259 djm 3261: }
1.258 naddy 3262: }
1.257 djm 3263: ret = 0;
3264: out:
1.258 naddy 3265: free(orig);
1.257 djm 3266: free(user);
3267: free(host);
3268: return ret;
1.280 millert 3269: }
3270:
3271: int
3272: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
3273: {
1.344 djm 3274: char *user = NULL, *host = NULL, *path = NULL;
3275: int r, port;
1.280 millert 3276:
1.344 djm 3277: r = parse_uri("ssh", uri, &user, &host, &port, &path);
1.280 millert 3278: if (r == 0 && path != NULL)
3279: r = -1; /* path not allowed */
1.344 djm 3280: if (r == 0) {
3281: if (userp != NULL) {
3282: *userp = user;
3283: user = NULL;
3284: }
3285: if (hostp != NULL) {
3286: *hostp = host;
3287: host = NULL;
3288: }
3289: if (portp != NULL)
3290: *portp = port;
3291: }
3292: free(user);
3293: free(host);
3294: free(path);
1.280 millert 3295: return r;
1.257 djm 3296: }
3297:
1.221 djm 3298: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
3299: static const char *
3300: fmt_multistate_int(int val, const struct multistate *m)
3301: {
3302: u_int i;
3303:
3304: for (i = 0; m[i].key != NULL; i++) {
3305: if (m[i].value == val)
3306: return m[i].key;
3307: }
3308: return "UNKNOWN";
3309: }
3310:
3311: static const char *
3312: fmt_intarg(OpCodes code, int val)
3313: {
3314: if (val == -1)
3315: return "unset";
3316: switch (code) {
3317: case oAddressFamily:
3318: return fmt_multistate_int(val, multistate_addressfamily);
3319: case oVerifyHostKeyDNS:
1.232 djm 3320: case oUpdateHostkeys:
1.221 djm 3321: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 3322: case oStrictHostKeyChecking:
3323: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 3324: case oControlMaster:
3325: return fmt_multistate_int(val, multistate_controlmaster);
3326: case oTunnel:
3327: return fmt_multistate_int(val, multistate_tunnel);
3328: case oRequestTTY:
3329: return fmt_multistate_int(val, multistate_requesttty);
1.359 djm 3330: case oSessionType:
3331: return fmt_multistate_int(val, multistate_sessiontype);
1.221 djm 3332: case oCanonicalizeHostname:
3333: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 3334: case oAddKeysToAgent:
3335: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.364 djm 3336: case oPubkeyAuthentication:
3337: return fmt_multistate_int(val, multistate_pubkey_auth);
1.224 djm 3338: case oFingerprintHash:
3339: return ssh_digest_alg_name(val);
1.221 djm 3340: default:
3341: switch (val) {
3342: case 0:
3343: return "no";
3344: case 1:
3345: return "yes";
3346: default:
3347: return "UNKNOWN";
3348: }
3349: }
3350: }
3351:
3352: static const char *
3353: lookup_opcode_name(OpCodes code)
3354: {
3355: u_int i;
3356:
3357: for (i = 0; keywords[i].name != NULL; i++)
3358: if (keywords[i].opcode == code)
3359: return(keywords[i].name);
3360: return "UNKNOWN";
3361: }
3362:
3363: static void
3364: dump_cfg_int(OpCodes code, int val)
3365: {
1.381 djm 3366: if (code == oObscureKeystrokeTiming) {
3367: if (val == 0) {
3368: printf("%s no\n", lookup_opcode_name(code));
3369: return;
3370: } else if (val == SSH_KEYSTROKE_DEFAULT_INTERVAL_MS) {
3371: printf("%s yes\n", lookup_opcode_name(code));
3372: return;
3373: }
3374: /* FALLTHROUGH */
3375: }
1.221 djm 3376: printf("%s %d\n", lookup_opcode_name(code), val);
3377: }
3378:
3379: static void
3380: dump_cfg_fmtint(OpCodes code, int val)
3381: {
3382: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
3383: }
3384:
3385: static void
3386: dump_cfg_string(OpCodes code, const char *val)
3387: {
3388: if (val == NULL)
3389: return;
3390: printf("%s %s\n", lookup_opcode_name(code), val);
3391: }
3392:
3393: static void
3394: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
3395: {
3396: u_int i;
3397:
3398: for (i = 0; i < count; i++)
3399: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
3400: }
3401:
3402: static void
3403: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
3404: {
3405: u_int i;
3406:
3407: printf("%s", lookup_opcode_name(code));
1.356 djm 3408: if (count == 0)
3409: printf(" none");
1.221 djm 3410: for (i = 0; i < count; i++)
3411: printf(" %s", vals[i]);
3412: printf("\n");
3413: }
3414:
3415: static void
3416: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
3417: {
3418: const struct Forward *fwd;
3419: u_int i;
3420:
3421: /* oDynamicForward */
3422: for (i = 0; i < count; i++) {
3423: fwd = &fwds[i];
1.265 djm 3424: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 3425: strcmp(fwd->connect_host, "socks") != 0)
3426: continue;
1.265 djm 3427: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 3428: strcmp(fwd->connect_host, "socks") == 0)
3429: continue;
3430: printf("%s", lookup_opcode_name(code));
3431: if (fwd->listen_port == PORT_STREAMLOCAL)
3432: printf(" %s", fwd->listen_path);
3433: else if (fwd->listen_host == NULL)
3434: printf(" %d", fwd->listen_port);
3435: else {
3436: printf(" [%s]:%d",
3437: fwd->listen_host, fwd->listen_port);
3438: }
3439: if (code != oDynamicForward) {
3440: if (fwd->connect_port == PORT_STREAMLOCAL)
3441: printf(" %s", fwd->connect_path);
3442: else if (fwd->connect_host == NULL)
3443: printf(" %d", fwd->connect_port);
3444: else {
3445: printf(" [%s]:%d",
3446: fwd->connect_host, fwd->connect_port);
3447: }
3448: }
3449: printf("\n");
3450: }
3451: }
3452:
3453: void
3454: dump_client_config(Options *o, const char *host)
3455: {
1.326 djm 3456: int i, r;
3457: char buf[8], *all_key;
3458:
3459: /*
3460: * Expand HostKeyAlgorithms name lists. This isn't handled in
3461: * fill_default_options() like the other algorithm lists because
3462: * the host key algorithms are by default dynamically chosen based
3463: * on the host's keys found in known_hosts.
3464: */
3465: all_key = sshkey_alg_list(0, 0, 1, ',');
3466: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
3467: all_key)) != 0)
1.340 djm 3468: fatal_fr(r, "expand HostKeyAlgorithms");
1.326 djm 3469: free(all_key);
1.240 djm 3470:
1.221 djm 3471: /* Most interesting options first: user, host, port */
1.372 dtucker 3472: dump_cfg_string(oHost, o->host_arg);
1.221 djm 3473: dump_cfg_string(oUser, o->user);
1.306 jmc 3474: dump_cfg_string(oHostname, host);
1.221 djm 3475: dump_cfg_int(oPort, o->port);
3476:
3477: /* Flag options */
3478: dump_cfg_fmtint(oAddressFamily, o->address_family);
3479: dump_cfg_fmtint(oBatchMode, o->batch_mode);
3480: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
3481: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
3482: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
3483: dump_cfg_fmtint(oCompression, o->compression);
3484: dump_cfg_fmtint(oControlMaster, o->control_master);
3485: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 3486: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 3487: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 3488: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 3489: dump_cfg_fmtint(oForwardX11, o->forward_x11);
3490: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
3491: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
3492: #ifdef GSSAPI
3493: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
3494: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
3495: #endif /* GSSAPI */
3496: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
3497: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
3498: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
3499: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
3500: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
3501: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
3502: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
3503: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
3504: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
3505: dump_cfg_fmtint(oRequestTTY, o->request_tty);
1.359 djm 3506: dump_cfg_fmtint(oSessionType, o->session_type);
1.360 djm 3507: dump_cfg_fmtint(oStdinNull, o->stdin_null);
1.361 djm 3508: dump_cfg_fmtint(oForkAfterAuthentication, o->fork_after_authentication);
1.221 djm 3509: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
3510: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
3511: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
3512: dump_cfg_fmtint(oTunnel, o->tun_open);
3513: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
3514: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 3515: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.370 djm 3516: dump_cfg_fmtint(oEnableEscapeCommandline, o->enable_escape_commandline);
1.221 djm 3517:
3518: /* Integer options */
3519: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
3520: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
3521: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
3522: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
3523: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
3524: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
1.369 djm 3525: dump_cfg_int(oRequiredRSASize, o->required_rsa_size);
1.381 djm 3526: dump_cfg_int(oObscureKeystrokeTiming,
3527: o->obscure_keystroke_timing_interval);
1.221 djm 3528:
3529: /* String options */
3530: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 3531: dump_cfg_string(oBindInterface, o->bind_interface);
1.320 dtucker 3532: dump_cfg_string(oCiphers, o->ciphers);
1.221 djm 3533: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 3534: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 3535: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.350 dtucker 3536: dump_cfg_string(oHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.253 markus 3537: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 3538: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 3539: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.320 dtucker 3540: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
3541: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.221 djm 3542: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 3543: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 3544: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.320 dtucker 3545: dump_cfg_string(oMacs, o->macs);
1.266 djm 3546: #ifdef ENABLE_PKCS11
1.221 djm 3547: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 3548: #endif
1.310 djm 3549: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.221 djm 3550: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.349 dtucker 3551: dump_cfg_string(oPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.230 djm 3552: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 3553: dump_cfg_string(oXAuthLocation, o->xauth_location);
1.346 djm 3554: dump_cfg_string(oKnownHostsCommand, o->known_hosts_command);
1.379 djm 3555: dump_cfg_string(oTag, o->tag);
1.221 djm 3556:
1.230 djm 3557: /* Forwards */
1.221 djm 3558: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
3559: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
3560: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
3561:
3562: /* String array options */
3563: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
3564: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 3565: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 3566: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
3567: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
3568: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 3569: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.339 djm 3570: dump_cfg_strarray_oneline(oLogVerbose,
3571: o->num_log_verbose, o->log_verbose);
1.382 djm 3572: dump_cfg_strarray_oneline(oChannelTimeout,
3573: o->num_channel_timeouts, o->channel_timeouts);
1.221 djm 3574:
3575: /* Special cases */
1.351 markus 3576:
3577: /* PermitRemoteOpen */
3578: if (o->num_permitted_remote_opens == 0)
3579: printf("%s any\n", lookup_opcode_name(oPermitRemoteOpen));
3580: else
3581: dump_cfg_strarray_oneline(oPermitRemoteOpen,
3582: o->num_permitted_remote_opens, o->permitted_remote_opens);
1.334 djm 3583:
3584: /* AddKeysToAgent */
3585: if (o->add_keys_to_agent_lifespan <= 0)
3586: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
3587: else {
3588: printf("addkeystoagent%s %d\n",
3589: o->add_keys_to_agent == 3 ? " confirm" : "",
3590: o->add_keys_to_agent_lifespan);
3591: }
1.319 djm 3592:
3593: /* oForwardAgent */
3594: if (o->forward_agent_sock_path == NULL)
3595: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
3596: else
3597: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
1.221 djm 3598:
3599: /* oConnectTimeout */
3600: if (o->connection_timeout == -1)
3601: printf("connecttimeout none\n");
3602: else
3603: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3604:
3605: /* oTunnelDevice */
3606: printf("tunneldevice");
3607: if (o->tun_local == SSH_TUNID_ANY)
3608: printf(" any");
3609: else
3610: printf(" %d", o->tun_local);
3611: if (o->tun_remote == SSH_TUNID_ANY)
3612: printf(":any");
3613: else
3614: printf(":%d", o->tun_remote);
3615: printf("\n");
3616:
3617: /* oCanonicalizePermittedCNAMEs */
1.362 djm 3618: printf("canonicalizePermittedcnames");
3619: if (o->num_permitted_cnames == 0)
1.363 djm 3620: printf(" none");
1.362 djm 3621: for (i = 0; i < o->num_permitted_cnames; i++) {
3622: printf(" %s:%s", o->permitted_cnames[i].source_list,
3623: o->permitted_cnames[i].target_list);
1.221 djm 3624: }
1.362 djm 3625: printf("\n");
1.221 djm 3626:
3627: /* oControlPersist */
3628: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3629: dump_cfg_fmtint(oControlPersist, o->control_persist);
3630: else
3631: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3632:
3633: /* oEscapeChar */
3634: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3635: printf("escapechar none\n");
3636: else {
1.257 djm 3637: vis(buf, o->escape_char, VIS_WHITE, 0);
3638: printf("escapechar %s\n", buf);
1.221 djm 3639: }
3640:
3641: /* oIPQoS */
3642: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3643: printf("%s\n", iptos2str(o->ip_qos_bulk));
3644:
3645: /* oRekeyLimit */
1.249 dtucker 3646: printf("rekeylimit %llu %d\n",
3647: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 3648:
3649: /* oStreamLocalBindMask */
3650: printf("streamlocalbindmask 0%o\n",
3651: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 3652:
3653: /* oLogFacility */
3654: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 3655:
3656: /* oProxyCommand / oProxyJump */
3657: if (o->jump_host == NULL)
3658: dump_cfg_string(oProxyCommand, o->proxy_command);
3659: else {
3660: /* Check for numeric addresses */
3661: i = strchr(o->jump_host, ':') != NULL ||
3662: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3663: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3664: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 3665: /* optional additional jump spec */
3666: o->jump_extra == NULL ? "" : o->jump_extra,
3667: o->jump_extra == NULL ? "" : ",",
1.257 djm 3668: /* optional user */
3669: o->jump_user == NULL ? "" : o->jump_user,
3670: o->jump_user == NULL ? "" : "@",
3671: /* opening [ if hostname is numeric */
3672: i ? "[" : "",
3673: /* mandatory hostname */
3674: o->jump_host,
3675: /* closing ] if hostname is numeric */
3676: i ? "]" : "",
3677: /* optional port number */
3678: o->jump_port <= 0 ? "" : ":",
1.259 djm 3679: o->jump_port <= 0 ? "" : buf);
1.257 djm 3680: }
1.1 deraadt 3681: }
![[BACK]](/icons/back.gif){kind=icon}
Return to readconf.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh