Annotation of src/usr.bin/ssh/readconf.c, Revision 1.304
1.304 ! djm 1: /* $OpenBSD: readconf.c,v 1.303 2019/02/23 08:20:43 djm Exp $ */
1.1 deraadt 2: /*
1.18 deraadt 3: * Author: Tatu Ylonen <ylo@cs.hut.fi>
4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
6: * Functions for reading the configuration files.
1.26 markus 7: *
1.46 deraadt 8: * As far as I am concerned, the code I have written for this software
9: * can be used freely for any purpose. Any derived versions of this
10: * software must be clearly marked as such, and if the derived work is
11: * incompatible with the protocol description in the RFC file, it must be
12: * called by a name other than "ssh" or "Secure Shell".
1.18 deraadt 13: */
1.1 deraadt 14:
1.147 stevesk 15: #include <sys/types.h>
16: #include <sys/stat.h>
1.152 stevesk 17: #include <sys/socket.h>
1.206 djm 18: #include <sys/wait.h>
1.220 millert 19: #include <sys/un.h>
1.152 stevesk 20:
21: #include <netinet/in.h>
1.190 djm 22: #include <netinet/ip.h>
1.148 stevesk 23:
24: #include <ctype.h>
1.154 stevesk 25: #include <errno.h>
1.206 djm 26: #include <fcntl.h>
1.252 djm 27: #include <glob.h>
1.155 stevesk 28: #include <netdb.h>
1.206 djm 29: #include <paths.h>
30: #include <pwd.h>
1.159 deraadt 31: #include <signal.h>
1.158 stevesk 32: #include <stdio.h>
1.157 stevesk 33: #include <string.h>
1.156 stevesk 34: #include <unistd.h>
1.228 deraadt 35: #include <limits.h>
1.200 dtucker 36: #include <util.h>
1.221 djm 37: #include <vis.h>
1.1 deraadt 38:
1.159 deraadt 39: #include "xmalloc.h"
1.1 deraadt 40: #include "ssh.h"
1.297 djm 41: #include "ssherr.h"
1.25 markus 42: #include "compat.h"
1.58 markus 43: #include "cipher.h"
1.55 markus 44: #include "pathnames.h"
1.58 markus 45: #include "log.h"
1.227 djm 46: #include "sshkey.h"
1.220 millert 47: #include "misc.h"
1.58 markus 48: #include "readconf.h"
49: #include "match.h"
1.62 markus 50: #include "kex.h"
51: #include "mac.h"
1.206 djm 52: #include "uidswap.h"
1.221 djm 53: #include "myproposal.h"
1.224 djm 54: #include "digest.h"
1.1 deraadt 55:
56: /* Format of the configuration file:
57:
58: # Configuration data is parsed as follows:
59: # 1. command line options
60: # 2. user-specific file
61: # 3. system-wide file
62: # Any configuration value is only changed the first time it is set.
63: # Thus, host-specific definitions should be at the beginning of the
64: # configuration file, and defaults at the end.
65:
66: # Host-specific declarations. These may override anything above. A single
67: # host may match multiple declarations; these are processed in the order
68: # that they are given in.
69:
70: Host *.ngs.fi ngs.fi
1.96 markus 71: User foo
1.1 deraadt 72:
73: Host fake.com
74: HostName another.host.name.real.org
75: User blaah
76: Port 34289
77: ForwardX11 no
78: ForwardAgent no
79:
80: Host books.com
81: RemoteForward 9999 shadows.cs.hut.fi:9999
1.266 djm 82: Ciphers 3des-cbc
1.1 deraadt 83:
84: Host fascist.blob.com
85: Port 23123
86: User tylonen
87: PasswordAuthentication no
88:
89: Host puukko.hut.fi
90: User t35124p
91: ProxyCommand ssh-proxy %h %p
92:
93: Host *.fr
1.96 markus 94: PublicKeyAuthentication no
1.1 deraadt 95:
96: Host *.su
1.266 djm 97: Ciphers aes128-ctr
1.1 deraadt 98: PasswordAuthentication no
99:
1.144 reyk 100: Host vpn.fake.com
101: Tunnel yes
102: TunnelDevice 3
103:
1.1 deraadt 104: # Defaults for various options
105: Host *
106: ForwardAgent no
1.50 markus 107: ForwardX11 no
1.1 deraadt 108: PasswordAuthentication yes
109: RSAAuthentication yes
110: RhostsRSAAuthentication yes
111: StrictHostKeyChecking yes
1.126 markus 112: TcpKeepAlive no
1.1 deraadt 113: IdentityFile ~/.ssh/identity
114: Port 22
115: EscapeChar ~
116:
117: */
118:
1.252 djm 119: static int read_config_file_depth(const char *filename, struct passwd *pw,
120: const char *host, const char *original_host, Options *options,
1.302 djm 121: int flags, int *activep, int *want_final_pass, int depth);
1.252 djm 122: static int process_config_line_depth(Options *options, struct passwd *pw,
123: const char *host, const char *original_host, char *line,
1.302 djm 124: const char *filename, int linenum, int *activep, int flags,
125: int *want_final_pass, int depth);
1.252 djm 126:
1.1 deraadt 127: /* Keyword tokens. */
128:
1.17 markus 129: typedef enum {
130: oBadOption,
1.252 djm 131: oHost, oMatch, oInclude,
1.186 djm 132: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
133: oGatewayPorts, oExitOnForwardFailure,
1.100 deraadt 134: oPasswordAuthentication, oRSAAuthentication,
1.59 markus 135: oChallengeResponseAuthentication, oXAuthLocation,
1.17 markus 136: oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
1.253 markus 137: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.206 djm 138: oUser, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
1.17 markus 139: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
140: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.126 markus 141: oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts,
1.273 djm 142: oUsePrivilegedPort, oLogFacility, oLogLevel, oCiphers, oMacs,
1.221 djm 143: oPubkeyAuthentication,
1.67 markus 144: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 145: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.282 djm 146: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.96 markus 147: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 148: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 149: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 150: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.290 djm 151: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.187 djm 152: oHashKnownHosts,
1.277 bluhm 153: oTunnel, oTunnelDevice,
154: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.248 markus 155: oVisualHostKey,
1.205 djm 156: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 157: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
158: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 159: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.230 djm 160: oFingerprintHash, oUpdateHostkeys, oHostbasedKeyTypes,
1.298 djm 161: oPubkeyAcceptedKeyTypes, oCASignatureAlgorithms, oProxyJump,
1.273 djm 162: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 163: } OpCodes;
164:
165: /* Textual representations of the tokens. */
166:
1.17 markus 167: static struct {
168: const char *name;
169: OpCodes opcode;
170: } keywords[] = {
1.266 djm 171: /* Deprecated options */
1.273 djm 172: { "protocol", oIgnore }, /* NB. silently ignored */
1.274 djm 173: { "cipher", oDeprecated },
1.266 djm 174: { "fallbacktorsh", oDeprecated },
175: { "globalknownhostsfile2", oDeprecated },
176: { "rhostsauthentication", oDeprecated },
177: { "userknownhostsfile2", oDeprecated },
178: { "useroaming", oDeprecated },
179: { "usersh", oDeprecated },
1.294 dtucker 180: { "useprivilegedport", oDeprecated },
1.266 djm 181:
182: /* Unsupported options */
183: { "afstokenpassing", oUnsupported },
184: { "kerberosauthentication", oUnsupported },
185: { "kerberostgtpassing", oUnsupported },
186:
187: /* Sometimes-unsupported options */
188: #if defined(GSSAPI)
189: { "gssapiauthentication", oGssAuthentication },
190: { "gssapidelegatecredentials", oGssDelegateCreds },
191: # else
192: { "gssapiauthentication", oUnsupported },
193: { "gssapidelegatecredentials", oUnsupported },
194: #endif
195: #ifdef ENABLE_PKCS11
1.304 ! djm 196: { "pkcs11provider", oPKCS11Provider },
1.266 djm 197: { "smartcarddevice", oPKCS11Provider },
198: # else
199: { "smartcarddevice", oUnsupported },
200: { "pkcs11provider", oUnsupported },
201: #endif
202: { "rsaauthentication", oUnsupported },
203: { "rhostsrsaauthentication", oUnsupported },
204: { "compressionlevel", oUnsupported },
205:
1.17 markus 206: { "forwardagent", oForwardAgent },
207: { "forwardx11", oForwardX11 },
1.123 markus 208: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 209: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 210: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 211: { "xauthlocation", oXAuthLocation },
1.17 markus 212: { "gatewayports", oGatewayPorts },
213: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 214: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
215: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.50 markus 216: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 217: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.73 markus 218: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 219: { "challengeresponseauthentication", oChallengeResponseAuthentication },
220: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
221: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.17 markus 222: { "identityfile", oIdentityFile },
1.174 stevesk 223: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 224: { "identitiesonly", oIdentitiesOnly },
1.241 djm 225: { "certificatefile", oCertificateFile },
1.246 jcs 226: { "addkeystoagent", oAddKeysToAgent },
1.253 markus 227: { "identityagent", oIdentityAgent },
1.17 markus 228: { "hostname", oHostName },
1.52 markus 229: { "hostkeyalias", oHostKeyAlias },
1.17 markus 230: { "proxycommand", oProxyCommand },
231: { "port", oPort },
1.25 markus 232: { "ciphers", oCiphers },
1.62 markus 233: { "macs", oMacs },
1.17 markus 234: { "remoteforward", oRemoteForward },
235: { "localforward", oLocalForward },
236: { "user", oUser },
237: { "host", oHost },
1.206 djm 238: { "match", oMatch },
1.17 markus 239: { "escapechar", oEscapeChar },
240: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.174 stevesk 241: { "userknownhostsfile", oUserKnownHostsFile },
1.17 markus 242: { "connectionattempts", oConnectionAttempts },
243: { "batchmode", oBatchMode },
244: { "checkhostip", oCheckHostIP },
245: { "stricthostkeychecking", oStrictHostKeyChecking },
246: { "compression", oCompression },
1.126 markus 247: { "tcpkeepalive", oTCPKeepAlive },
248: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 249: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.271 dtucker 250: { "syslogfacility", oLogFacility },
1.17 markus 251: { "loglevel", oLogLevel },
1.71 markus 252: { "dynamicforward", oDynamicForward },
1.67 markus 253: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 254: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.298 djm 255: { "casignaturealgorithms", oCASignatureAlgorithms },
1.77 markus 256: { "bindaddress", oBindAddress },
1.282 djm 257: { "bindinterface", oBindInterface },
1.93 deraadt 258: { "clearallforwardings", oClearAllForwardings },
1.101 markus 259: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 260: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 261: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 262: { "rekeylimit", oRekeyLimit },
1.111 djm 263: { "connecttimeout", oConnectTimeout },
1.112 djm 264: { "addressfamily", oAddressFamily },
1.127 markus 265: { "serveraliveinterval", oServerAliveInterval },
266: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 267: { "sendenv", oSendEnv },
1.290 djm 268: { "setenv", oSetEnv },
1.132 djm 269: { "controlpath", oControlPath },
270: { "controlmaster", oControlMaster },
1.187 djm 271: { "controlpersist", oControlPersist },
1.136 djm 272: { "hashknownhosts", oHashKnownHosts },
1.252 djm 273: { "include", oInclude },
1.144 reyk 274: { "tunnel", oTunnel },
275: { "tunneldevice", oTunnelDevice },
276: { "localcommand", oLocalCommand },
277: { "permitlocalcommand", oPermitLocalCommand },
1.277 bluhm 278: { "remotecommand", oRemoteCommand },
1.167 grunk 279: { "visualhostkey", oVisualHostKey },
1.189 djm 280: { "kexalgorithms", oKexAlgorithms },
1.190 djm 281: { "ipqos", oIPQoS },
1.192 djm 282: { "requesttty", oRequestTTY },
1.205 djm 283: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 284: { "canonicaldomains", oCanonicalDomains },
1.209 djm 285: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
286: { "canonicalizehostname", oCanonicalizeHostname },
287: { "canonicalizemaxdots", oCanonicalizeMaxDots },
288: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 289: { "streamlocalbindmask", oStreamLocalBindMask },
290: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 291: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 292: { "fingerprinthash", oFingerprintHash },
1.229 djm 293: { "updatehostkeys", oUpdateHostkeys },
1.230 djm 294: { "hostbasedkeytypes", oHostbasedKeyTypes },
1.238 markus 295: { "pubkeyacceptedkeytypes", oPubkeyAcceptedKeyTypes },
1.199 djm 296: { "ignoreunknown", oIgnoreUnknown },
1.257 djm 297: { "proxyjump", oProxyJump },
1.171 djm 298:
1.92 stevesk 299: { NULL, oBadOption }
1.13 markus 300: };
301:
1.19 markus 302: /*
303: * Adds a local TCP/IP port forward to options. Never returns if there is an
304: * error.
305: */
1.1 deraadt 306:
1.26 markus 307: void
1.220 millert 308: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 309: {
1.220 millert 310: struct Forward *fwd;
1.251 djm 311: int i;
1.185 djm 312:
1.251 djm 313: /* Don't add duplicates */
314: for (i = 0; i < options->num_local_forwards; i++) {
315: if (forward_equals(newfwd, options->local_forwards + i))
316: return;
317: }
1.234 deraadt 318: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 319: options->num_local_forwards + 1,
320: sizeof(*options->local_forwards));
1.17 markus 321: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 322:
1.172 stevesk 323: fwd->listen_host = newfwd->listen_host;
1.135 djm 324: fwd->listen_port = newfwd->listen_port;
1.220 millert 325: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 326: fwd->connect_host = newfwd->connect_host;
1.135 djm 327: fwd->connect_port = newfwd->connect_port;
1.220 millert 328: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 329: }
330:
1.19 markus 331: /*
332: * Adds a remote TCP/IP port forward to options. Never returns if there is
333: * an error.
334: */
1.1 deraadt 335:
1.26 markus 336: void
1.220 millert 337: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 338: {
1.220 millert 339: struct Forward *fwd;
1.251 djm 340: int i;
1.185 djm 341:
1.251 djm 342: /* Don't add duplicates */
343: for (i = 0; i < options->num_remote_forwards; i++) {
344: if (forward_equals(newfwd, options->remote_forwards + i))
345: return;
346: }
1.234 deraadt 347: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 348: options->num_remote_forwards + 1,
349: sizeof(*options->remote_forwards));
1.17 markus 350: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 351:
1.172 stevesk 352: fwd->listen_host = newfwd->listen_host;
1.135 djm 353: fwd->listen_port = newfwd->listen_port;
1.220 millert 354: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 355: fwd->connect_host = newfwd->connect_host;
1.135 djm 356: fwd->connect_port = newfwd->connect_port;
1.220 millert 357: fwd->connect_path = newfwd->connect_path;
1.194 markus 358: fwd->handle = newfwd->handle;
1.184 markus 359: fwd->allocated_port = 0;
1.1 deraadt 360: }
361:
1.90 stevesk 362: static void
363: clear_forwardings(Options *options)
364: {
365: int i;
366:
1.135 djm 367: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 368: free(options->local_forwards[i].listen_host);
1.220 millert 369: free(options->local_forwards[i].listen_path);
1.202 djm 370: free(options->local_forwards[i].connect_host);
1.220 millert 371: free(options->local_forwards[i].connect_path);
1.135 djm 372: }
1.185 djm 373: if (options->num_local_forwards > 0) {
1.202 djm 374: free(options->local_forwards);
1.185 djm 375: options->local_forwards = NULL;
376: }
1.90 stevesk 377: options->num_local_forwards = 0;
1.135 djm 378: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 379: free(options->remote_forwards[i].listen_host);
1.220 millert 380: free(options->remote_forwards[i].listen_path);
1.202 djm 381: free(options->remote_forwards[i].connect_host);
1.220 millert 382: free(options->remote_forwards[i].connect_path);
1.135 djm 383: }
1.185 djm 384: if (options->num_remote_forwards > 0) {
1.202 djm 385: free(options->remote_forwards);
1.185 djm 386: options->remote_forwards = NULL;
387: }
1.90 stevesk 388: options->num_remote_forwards = 0;
1.145 reyk 389: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 390: }
391:
1.195 dtucker 392: void
1.241 djm 393: add_certificate_file(Options *options, const char *path, int userprovided)
394: {
395: int i;
396:
397: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
398: fatal("Too many certificate files specified (max %d)",
399: SSH_MAX_CERTIFICATE_FILES);
400:
401: /* Avoid registering duplicates */
402: for (i = 0; i < options->num_certificate_files; i++) {
403: if (options->certificate_file_userprovided[i] == userprovided &&
404: strcmp(options->certificate_files[i], path) == 0) {
405: debug2("%s: ignoring duplicate key %s", __func__, path);
406: return;
407: }
408: }
409:
410: options->certificate_file_userprovided[options->num_certificate_files] =
411: userprovided;
412: options->certificate_files[options->num_certificate_files++] =
413: xstrdup(path);
414: }
415:
416: void
1.195 dtucker 417: add_identity_file(Options *options, const char *dir, const char *filename,
418: int userprovided)
419: {
420: char *path;
1.219 djm 421: int i;
1.195 dtucker 422:
423: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
424: fatal("Too many identity files specified (max %d)",
425: SSH_MAX_IDENTITY_FILES);
426:
427: if (dir == NULL) /* no dir, filename is absolute */
428: path = xstrdup(filename);
1.276 djm 429: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
430: fatal("Identity file path %s too long", path);
1.219 djm 431:
432: /* Avoid registering duplicates */
433: for (i = 0; i < options->num_identity_files; i++) {
434: if (options->identity_file_userprovided[i] == userprovided &&
435: strcmp(options->identity_files[i], path) == 0) {
436: debug2("%s: ignoring duplicate key %s", __func__, path);
437: free(path);
438: return;
439: }
440: }
1.195 dtucker 441:
442: options->identity_file_userprovided[options->num_identity_files] =
443: userprovided;
444: options->identity_files[options->num_identity_files++] = path;
445: }
446:
1.206 djm 447: int
448: default_ssh_port(void)
449: {
450: static int port;
451: struct servent *sp;
452:
453: if (port == 0) {
454: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
455: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
456: }
457: return port;
458: }
459:
460: /*
461: * Execute a command in a shell.
462: * Return its exit status or -1 on abnormal exit.
463: */
464: static int
465: execute_in_shell(const char *cmd)
466: {
1.243 dtucker 467: char *shell;
1.206 djm 468: pid_t pid;
469: int devnull, status;
470:
471: if ((shell = getenv("SHELL")) == NULL)
472: shell = _PATH_BSHELL;
473:
474: /* Need this to redirect subprocess stdin/out */
475: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
476: fatal("open(/dev/null): %s", strerror(errno));
477:
478: debug("Executing command: '%.500s'", cmd);
479:
480: /* Fork and execute the command. */
481: if ((pid = fork()) == 0) {
1.245 djm 482: char *argv[4];
1.206 djm 483:
484: /* Redirect child stdin and stdout. Leave stderr */
485: if (dup2(devnull, STDIN_FILENO) == -1)
486: fatal("dup2: %s", strerror(errno));
487: if (dup2(devnull, STDOUT_FILENO) == -1)
488: fatal("dup2: %s", strerror(errno));
489: if (devnull > STDERR_FILENO)
490: close(devnull);
491: closefrom(STDERR_FILENO + 1);
1.245 djm 492:
493: argv[0] = shell;
494: argv[1] = "-c";
495: argv[2] = xstrdup(cmd);
496: argv[3] = NULL;
1.206 djm 497:
498: execv(argv[0], argv);
499: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
500: /* Die with signal to make this error apparent to parent. */
501: signal(SIGTERM, SIG_DFL);
502: kill(getpid(), SIGTERM);
503: _exit(1);
504: }
505: /* Parent. */
506: if (pid < 0)
507: fatal("%s: fork: %.100s", __func__, strerror(errno));
508:
509: close(devnull);
510:
511: while (waitpid(pid, &status, 0) == -1) {
512: if (errno != EINTR && errno != EAGAIN)
513: fatal("%s: waitpid: %s", __func__, strerror(errno));
514: }
515: if (!WIFEXITED(status)) {
516: error("command '%.100s' exited abnormally", cmd);
517: return -1;
1.221 djm 518: }
1.206 djm 519: debug3("command returned status %d", WEXITSTATUS(status));
520: return WEXITSTATUS(status);
521: }
522:
523: /*
524: * Parse and execute a Match directive.
525: */
526: static int
527: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.302 djm 528: const char *host_arg, const char *original_host, int final_pass,
529: int *want_final_pass, const char *filename, int linenum)
1.206 djm 530: {
1.221 djm 531: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 532: const char *ruser;
1.221 djm 533: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 534: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.288 djm 535: char uidstr[32];
1.206 djm 536:
537: /*
538: * Configuration is likely to be incomplete at this point so we
539: * must be prepared to use default values.
540: */
541: port = options->port <= 0 ? default_ssh_port() : options->port;
542: ruser = options->user == NULL ? pw->pw_name : options->user;
1.302 djm 543: if (final_pass) {
1.250 djm 544: host = xstrdup(options->hostname);
545: } else if (options->hostname != NULL) {
1.212 djm 546: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 547: host = percent_expand(options->hostname,
548: "h", host_arg, (char *)NULL);
1.250 djm 549: } else {
1.211 djm 550: host = xstrdup(host_arg);
1.250 djm 551: }
1.206 djm 552:
1.221 djm 553: debug2("checking match for '%s' host %s originally %s",
554: cp, host, original_host);
555: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
556: criteria = NULL;
557: this_result = 1;
558: if ((negate = attrib[0] == '!'))
559: attrib++;
560: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 561: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 562: if (attributes > 1 ||
1.213 dtucker 563: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 564: error("%.200s line %d: '%s' cannot be combined "
565: "with other Match attributes",
566: filename, linenum, oattrib);
1.213 dtucker 567: result = -1;
568: goto out;
569: }
1.221 djm 570: if (result)
571: result = negate ? 0 : 1;
1.213 dtucker 572: goto out;
573: }
1.221 djm 574: attributes++;
1.302 djm 575: if (strcasecmp(attrib, "canonical") == 0 ||
576: strcasecmp(attrib, "final") == 0) {
577: /*
578: * If the config requests "Match final" then remember
579: * this so we can perform a second pass later.
580: */
581: if (strcasecmp(attrib, "final") == 0 &&
582: want_final_pass != NULL)
583: *want_final_pass = 1;
584: r = !!final_pass; /* force bitmask member to boolean */
1.221 djm 585: if (r == (negate ? 1 : 0))
586: this_result = result = 0;
587: debug3("%.200s line %d: %smatched '%s'",
588: filename, linenum,
589: this_result ? "" : "not ", oattrib);
590: continue;
591: }
592: /* All other criteria require an argument */
1.206 djm 593: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
594: error("Missing Match criteria for %s", attrib);
1.211 djm 595: result = -1;
596: goto out;
1.206 djm 597: }
598: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 599: criteria = xstrdup(host);
1.235 djm 600: r = match_hostname(host, arg) == 1;
1.221 djm 601: if (r == (negate ? 1 : 0))
602: this_result = result = 0;
1.206 djm 603: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 604: criteria = xstrdup(original_host);
1.235 djm 605: r = match_hostname(original_host, arg) == 1;
1.221 djm 606: if (r == (negate ? 1 : 0))
607: this_result = result = 0;
1.206 djm 608: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 609: criteria = xstrdup(ruser);
1.235 djm 610: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 611: if (r == (negate ? 1 : 0))
612: this_result = result = 0;
1.206 djm 613: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 614: criteria = xstrdup(pw->pw_name);
1.235 djm 615: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 616: if (r == (negate ? 1 : 0))
617: this_result = result = 0;
1.210 djm 618: } else if (strcasecmp(attrib, "exec") == 0) {
1.206 djm 619: if (gethostname(thishost, sizeof(thishost)) == -1)
620: fatal("gethostname: %s", strerror(errno));
621: strlcpy(shorthost, thishost, sizeof(shorthost));
622: shorthost[strcspn(thishost, ".")] = '\0';
623: snprintf(portstr, sizeof(portstr), "%d", port);
1.288 djm 624: snprintf(uidstr, sizeof(uidstr), "%llu",
625: (unsigned long long)pw->pw_uid);
1.206 djm 626:
627: cmd = percent_expand(arg,
628: "L", shorthost,
629: "d", pw->pw_dir,
630: "h", host,
631: "l", thishost,
1.221 djm 632: "n", original_host,
1.206 djm 633: "p", portstr,
634: "r", ruser,
635: "u", pw->pw_name,
1.288 djm 636: "i", uidstr,
1.206 djm 637: (char *)NULL);
1.217 djm 638: if (result != 1) {
639: /* skip execution if prior predicate failed */
1.221 djm 640: debug3("%.200s line %d: skipped exec "
641: "\"%.100s\"", filename, linenum, cmd);
642: free(cmd);
643: continue;
644: }
645: r = execute_in_shell(cmd);
646: if (r == -1) {
647: fatal("%.200s line %d: match exec "
648: "'%.100s' error", filename,
649: linenum, cmd);
1.217 djm 650: }
1.221 djm 651: criteria = xstrdup(cmd);
1.206 djm 652: free(cmd);
1.221 djm 653: /* Force exit status to boolean */
654: r = r == 0;
655: if (r == (negate ? 1 : 0))
656: this_result = result = 0;
1.206 djm 657: } else {
658: error("Unsupported Match attribute %s", attrib);
1.211 djm 659: result = -1;
660: goto out;
1.206 djm 661: }
1.221 djm 662: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
663: filename, linenum, this_result ? "": "not ",
664: oattrib, criteria);
665: free(criteria);
1.213 dtucker 666: }
667: if (attributes == 0) {
668: error("One or more attributes required for Match");
669: result = -1;
670: goto out;
1.206 djm 671: }
1.221 djm 672: out:
673: if (result != -1)
674: debug2("match %sfound", result ? "" : "not ");
1.206 djm 675: *condition = cp;
1.211 djm 676: free(host);
1.206 djm 677: return result;
678: }
679:
1.286 djm 680: /* Remove environment variable by pattern */
681: static void
682: rm_env(Options *options, const char *arg, const char *filename, int linenum)
683: {
684: int i, j;
685: char *cp;
686:
687: /* Remove an environment variable */
688: for (i = 0; i < options->num_send_env; ) {
689: cp = xstrdup(options->send_env[i]);
690: if (!match_pattern(cp, arg + 1)) {
691: free(cp);
692: i++;
693: continue;
694: }
695: debug3("%s line %d: removing environment %s",
696: filename, linenum, cp);
697: free(cp);
698: free(options->send_env[i]);
699: options->send_env[i] = NULL;
700: for (j = i; j < options->num_send_env - 1; j++) {
701: options->send_env[j] = options->send_env[j + 1];
702: options->send_env[j + 1] = NULL;
703: }
704: options->num_send_env--;
705: /* NB. don't increment i */
706: }
707: }
708:
1.19 markus 709: /*
1.70 stevesk 710: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 711: */
1.26 markus 712: static OpCodes
1.199 djm 713: parse_token(const char *cp, const char *filename, int linenum,
714: const char *ignored_unknown)
1.1 deraadt 715: {
1.199 djm 716: int i;
1.1 deraadt 717:
1.17 markus 718: for (i = 0; keywords[i].name; i++)
1.199 djm 719: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 720: return keywords[i].opcode;
1.235 djm 721: if (ignored_unknown != NULL &&
722: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 723: return oIgnoredUnknownOption;
1.75 stevesk 724: error("%s: line %d: Bad configuration option: %s",
725: filename, linenum, cp);
1.17 markus 726: return oBadOption;
1.1 deraadt 727: }
728:
1.207 djm 729: /* Multistate option parsing */
730: struct multistate {
731: char *key;
732: int value;
733: };
734: static const struct multistate multistate_flag[] = {
735: { "true", 1 },
736: { "false", 0 },
737: { "yes", 1 },
738: { "no", 0 },
739: { NULL, -1 }
740: };
741: static const struct multistate multistate_yesnoask[] = {
742: { "true", 1 },
743: { "false", 0 },
744: { "yes", 1 },
745: { "no", 0 },
746: { "ask", 2 },
747: { NULL, -1 }
748: };
1.278 djm 749: static const struct multistate multistate_strict_hostkey[] = {
750: { "true", SSH_STRICT_HOSTKEY_YES },
751: { "false", SSH_STRICT_HOSTKEY_OFF },
752: { "yes", SSH_STRICT_HOSTKEY_YES },
753: { "no", SSH_STRICT_HOSTKEY_OFF },
754: { "ask", SSH_STRICT_HOSTKEY_ASK },
755: { "off", SSH_STRICT_HOSTKEY_OFF },
756: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
757: { NULL, -1 }
758: };
1.246 jcs 759: static const struct multistate multistate_yesnoaskconfirm[] = {
760: { "true", 1 },
761: { "false", 0 },
762: { "yes", 1 },
763: { "no", 0 },
764: { "ask", 2 },
765: { "confirm", 3 },
766: { NULL, -1 }
767: };
1.207 djm 768: static const struct multistate multistate_addressfamily[] = {
769: { "inet", AF_INET },
770: { "inet6", AF_INET6 },
771: { "any", AF_UNSPEC },
772: { NULL, -1 }
773: };
774: static const struct multistate multistate_controlmaster[] = {
775: { "true", SSHCTL_MASTER_YES },
776: { "yes", SSHCTL_MASTER_YES },
777: { "false", SSHCTL_MASTER_NO },
778: { "no", SSHCTL_MASTER_NO },
779: { "auto", SSHCTL_MASTER_AUTO },
780: { "ask", SSHCTL_MASTER_ASK },
781: { "autoask", SSHCTL_MASTER_AUTO_ASK },
782: { NULL, -1 }
783: };
784: static const struct multistate multistate_tunnel[] = {
785: { "ethernet", SSH_TUNMODE_ETHERNET },
786: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
787: { "true", SSH_TUNMODE_DEFAULT },
788: { "yes", SSH_TUNMODE_DEFAULT },
789: { "false", SSH_TUNMODE_NO },
790: { "no", SSH_TUNMODE_NO },
791: { NULL, -1 }
792: };
793: static const struct multistate multistate_requesttty[] = {
794: { "true", REQUEST_TTY_YES },
795: { "yes", REQUEST_TTY_YES },
796: { "false", REQUEST_TTY_NO },
797: { "no", REQUEST_TTY_NO },
798: { "force", REQUEST_TTY_FORCE },
799: { "auto", REQUEST_TTY_AUTO },
800: { NULL, -1 }
801: };
1.209 djm 802: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 803: { "true", SSH_CANONICALISE_YES },
804: { "false", SSH_CANONICALISE_NO },
805: { "yes", SSH_CANONICALISE_YES },
806: { "no", SSH_CANONICALISE_NO },
807: { "always", SSH_CANONICALISE_ALWAYS },
808: { NULL, -1 }
809: };
1.207 djm 810:
1.19 markus 811: /*
812: * Processes a single option line as used in the configuration files. This
813: * only sets those values that have not already been set.
814: */
1.14 markus 815: int
1.206 djm 816: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 817: const char *original_host, char *line, const char *filename,
818: int linenum, int *activep, int flags)
1.1 deraadt 819: {
1.252 djm 820: return process_config_line_depth(options, pw, host, original_host,
1.302 djm 821: line, filename, linenum, activep, flags, NULL, 0);
1.252 djm 822: }
823:
824: #define WHITESPACE " \t\r\n"
825: static int
826: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
827: const char *original_host, char *line, const char *filename,
1.302 djm 828: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.252 djm 829: {
1.193 djm 830: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
831: char **cpptr, fwdarg[256];
1.199 djm 832: u_int i, *uintptr, max_entries = 0;
1.252 djm 833: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.279 markus 834: int remotefwd, dynamicfwd;
1.164 dtucker 835: LogLevel *log_level_ptr;
1.271 dtucker 836: SyslogFacility *log_facility_ptr;
1.201 dtucker 837: long long val64;
1.102 markus 838: size_t len;
1.220 millert 839: struct Forward fwd;
1.207 djm 840: const struct multistate *multistate_ptr;
1.208 djm 841: struct allowed_cname *cname;
1.252 djm 842: glob_t gl;
1.281 dtucker 843: const char *errstr;
1.106 djm 844:
1.206 djm 845: if (activep == NULL) { /* We are processing a command line directive */
846: cmdline = 1;
847: activep = &cmdline;
848: }
849:
1.267 djm 850: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.233 djm 851: if ((len = strlen(line)) == 0)
852: return 0;
853: for (len--; len > 0; len--) {
1.267 djm 854: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.106 djm 855: break;
856: line[len] = '\0';
857: }
1.1 deraadt 858:
1.42 provos 859: s = line;
860: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 861: if ((keyword = strdelim(&s)) == NULL)
862: return 0;
1.42 provos 863: /* Ignore leading whitespace. */
864: if (*keyword == '\0')
1.43 markus 865: keyword = strdelim(&s);
1.56 deraadt 866: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 867: return 0;
1.199 djm 868: /* Match lowercase keyword */
1.207 djm 869: lowercase(keyword);
1.17 markus 870:
1.199 djm 871: opcode = parse_token(keyword, filename, linenum,
872: options->ignored_unknown);
1.17 markus 873:
874: switch (opcode) {
875: case oBadOption:
1.19 markus 876: /* don't panic, but count bad options */
877: return -1;
1.273 djm 878: case oIgnore:
879: return 0;
1.199 djm 880: case oIgnoredUnknownOption:
881: debug("%s line %d: Ignored unknown option \"%s\"",
882: filename, linenum, keyword);
883: return 0;
1.111 djm 884: case oConnectTimeout:
885: intptr = &options->connection_timeout;
1.127 markus 886: parse_time:
1.111 djm 887: arg = strdelim(&s);
888: if (!arg || *arg == '\0')
889: fatal("%s line %d: missing time value.",
890: filename, linenum);
1.221 djm 891: if (strcmp(arg, "none") == 0)
892: value = -1;
893: else if ((value = convtime(arg)) == -1)
1.111 djm 894: fatal("%s line %d: invalid time value.",
895: filename, linenum);
1.160 dtucker 896: if (*activep && *intptr == -1)
1.111 djm 897: *intptr = value;
898: break;
899:
1.17 markus 900: case oForwardAgent:
901: intptr = &options->forward_agent;
1.207 djm 902: parse_flag:
903: multistate_ptr = multistate_flag;
904: parse_multistate:
1.42 provos 905: arg = strdelim(&s);
1.40 ho 906: if (!arg || *arg == '\0')
1.207 djm 907: fatal("%s line %d: missing argument.",
908: filename, linenum);
909: value = -1;
910: for (i = 0; multistate_ptr[i].key != NULL; i++) {
911: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
912: value = multistate_ptr[i].value;
913: break;
914: }
915: }
916: if (value == -1)
917: fatal("%s line %d: unsupported option \"%s\".",
918: filename, linenum, arg);
1.17 markus 919: if (*activep && *intptr == -1)
920: *intptr = value;
921: break;
922:
923: case oForwardX11:
924: intptr = &options->forward_x11;
925: goto parse_flag;
926:
1.123 markus 927: case oForwardX11Trusted:
928: intptr = &options->forward_x11_trusted;
929: goto parse_flag;
1.221 djm 930:
1.186 djm 931: case oForwardX11Timeout:
932: intptr = &options->forward_x11_timeout;
933: goto parse_time;
1.123 markus 934:
1.17 markus 935: case oGatewayPorts:
1.220 millert 936: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 937: goto parse_flag;
938:
1.153 markus 939: case oExitOnForwardFailure:
940: intptr = &options->exit_on_forward_failure;
941: goto parse_flag;
942:
1.17 markus 943: case oPasswordAuthentication:
944: intptr = &options->password_authentication;
945: goto parse_flag;
946:
1.48 markus 947: case oKbdInteractiveAuthentication:
948: intptr = &options->kbd_interactive_authentication;
949: goto parse_flag;
950:
951: case oKbdInteractiveDevices:
952: charptr = &options->kbd_interactive_devices;
953: goto parse_string;
954:
1.50 markus 955: case oPubkeyAuthentication:
956: intptr = &options->pubkey_authentication;
1.30 markus 957: goto parse_flag;
958:
1.72 markus 959: case oHostbasedAuthentication:
960: intptr = &options->hostbased_authentication;
961: goto parse_flag;
962:
1.59 markus 963: case oChallengeResponseAuthentication:
1.78 markus 964: intptr = &options->challenge_response_authentication;
1.17 markus 965: goto parse_flag;
1.108 jakob 966:
1.118 markus 967: case oGssAuthentication:
968: intptr = &options->gss_authentication;
969: goto parse_flag;
970:
971: case oGssDelegateCreds:
972: intptr = &options->gss_deleg_creds;
973: goto parse_flag;
974:
1.17 markus 975: case oBatchMode:
976: intptr = &options->batch_mode;
977: goto parse_flag;
978:
979: case oCheckHostIP:
980: intptr = &options->check_host_ip;
1.167 grunk 981: goto parse_flag;
1.17 markus 982:
1.107 jakob 983: case oVerifyHostKeyDNS:
984: intptr = &options->verify_host_key_dns;
1.207 djm 985: multistate_ptr = multistate_yesnoask;
986: goto parse_multistate;
1.107 jakob 987:
1.17 markus 988: case oStrictHostKeyChecking:
989: intptr = &options->strict_host_key_checking;
1.278 djm 990: multistate_ptr = multistate_strict_hostkey;
1.207 djm 991: goto parse_multistate;
1.17 markus 992:
993: case oCompression:
994: intptr = &options->compression;
995: goto parse_flag;
996:
1.126 markus 997: case oTCPKeepAlive:
998: intptr = &options->tcp_keep_alive;
1.17 markus 999: goto parse_flag;
1000:
1.91 markus 1001: case oNoHostAuthenticationForLocalhost:
1002: intptr = &options->no_host_authentication_for_localhost;
1003: goto parse_flag;
1004:
1.17 markus 1005: case oNumberOfPasswordPrompts:
1006: intptr = &options->number_of_password_prompts;
1007: goto parse_int;
1008:
1.105 markus 1009: case oRekeyLimit:
1010: arg = strdelim(&s);
1011: if (!arg || *arg == '\0')
1.198 dtucker 1012: fatal("%.200s line %d: Missing argument.", filename,
1013: linenum);
1014: if (strcmp(arg, "default") == 0) {
1015: val64 = 0;
1016: } else {
1.200 dtucker 1017: if (scan_scaled(arg, &val64) == -1)
1018: fatal("%.200s line %d: Bad number '%s': %s",
1019: filename, linenum, arg, strerror(errno));
1.198 dtucker 1020: if (val64 != 0 && val64 < 16)
1021: fatal("%.200s line %d: RekeyLimit too small",
1022: filename, linenum);
1.105 markus 1023: }
1.165 djm 1024: if (*activep && options->rekey_limit == -1)
1.249 dtucker 1025: options->rekey_limit = val64;
1.198 dtucker 1026: if (s != NULL) { /* optional rekey interval present */
1027: if (strcmp(s, "none") == 0) {
1028: (void)strdelim(&s); /* discard */
1029: break;
1030: }
1031: intptr = &options->rekey_interval;
1032: goto parse_time;
1033: }
1.105 markus 1034: break;
1035:
1.17 markus 1036: case oIdentityFile:
1.42 provos 1037: arg = strdelim(&s);
1.40 ho 1038: if (!arg || *arg == '\0')
1.17 markus 1039: fatal("%.200s line %d: Missing argument.", filename, linenum);
1040: if (*activep) {
1.50 markus 1041: intptr = &options->num_identity_files;
1.27 markus 1042: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 1043: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 1044: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 1045: add_identity_file(options, NULL,
1046: arg, flags & SSHCONF_USERCONF);
1.17 markus 1047: }
1048: break;
1049:
1.241 djm 1050: case oCertificateFile:
1051: arg = strdelim(&s);
1052: if (!arg || *arg == '\0')
1053: fatal("%.200s line %d: Missing argument.",
1054: filename, linenum);
1055: if (*activep) {
1056: intptr = &options->num_certificate_files;
1057: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1058: fatal("%.200s line %d: Too many certificate "
1059: "files specified (max %d).",
1060: filename, linenum,
1061: SSH_MAX_CERTIFICATE_FILES);
1062: }
1063: add_certificate_file(options, arg,
1064: flags & SSHCONF_USERCONF);
1065: }
1066: break;
1067:
1.34 markus 1068: case oXAuthLocation:
1069: charptr=&options->xauth_location;
1070: goto parse_string;
1071:
1.17 markus 1072: case oUser:
1073: charptr = &options->user;
1074: parse_string:
1.42 provos 1075: arg = strdelim(&s);
1.40 ho 1076: if (!arg || *arg == '\0')
1.193 djm 1077: fatal("%.200s line %d: Missing argument.",
1078: filename, linenum);
1.17 markus 1079: if (*activep && *charptr == NULL)
1.38 provos 1080: *charptr = xstrdup(arg);
1.17 markus 1081: break;
1082:
1083: case oGlobalKnownHostsFile:
1.193 djm 1084: cpptr = (char **)&options->system_hostfiles;
1085: uintptr = &options->num_system_hostfiles;
1086: max_entries = SSH_MAX_HOSTS_FILES;
1087: parse_char_array:
1088: if (*activep && *uintptr == 0) {
1089: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1090: if ((*uintptr) >= max_entries)
1091: fatal("%s line %d: "
1092: "too many authorized keys files.",
1093: filename, linenum);
1094: cpptr[(*uintptr)++] = xstrdup(arg);
1095: }
1096: }
1097: return 0;
1.17 markus 1098:
1099: case oUserKnownHostsFile:
1.193 djm 1100: cpptr = (char **)&options->user_hostfiles;
1101: uintptr = &options->num_user_hostfiles;
1102: max_entries = SSH_MAX_HOSTS_FILES;
1103: goto parse_char_array;
1.27 markus 1104:
1.17 markus 1105: case oHostName:
1106: charptr = &options->hostname;
1107: goto parse_string;
1108:
1.52 markus 1109: case oHostKeyAlias:
1110: charptr = &options->host_key_alias;
1111: goto parse_string;
1112:
1.67 markus 1113: case oPreferredAuthentications:
1114: charptr = &options->preferred_authentications;
1115: goto parse_string;
1116:
1.77 markus 1117: case oBindAddress:
1118: charptr = &options->bind_address;
1119: goto parse_string;
1120:
1.282 djm 1121: case oBindInterface:
1122: charptr = &options->bind_interface;
1123: goto parse_string;
1124:
1.183 markus 1125: case oPKCS11Provider:
1126: charptr = &options->pkcs11_provider;
1.86 markus 1127: goto parse_string;
1.85 jakob 1128:
1.17 markus 1129: case oProxyCommand:
1.144 reyk 1130: charptr = &options->proxy_command;
1.257 djm 1131: /* Ignore ProxyCommand if ProxyJump already specified */
1132: if (options->jump_host != NULL)
1133: charptr = &options->jump_host; /* Skip below */
1.144 reyk 1134: parse_command:
1.113 markus 1135: if (s == NULL)
1136: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1137: len = strspn(s, WHITESPACE "=");
1.17 markus 1138: if (*activep && *charptr == NULL)
1.102 markus 1139: *charptr = xstrdup(s + len);
1.17 markus 1140: return 0;
1141:
1.257 djm 1142: case oProxyJump:
1143: if (s == NULL) {
1144: fatal("%.200s line %d: Missing argument.",
1145: filename, linenum);
1146: }
1147: len = strspn(s, WHITESPACE "=");
1148: if (parse_jump(s + len, options, *activep) == -1) {
1149: fatal("%.200s line %d: Invalid ProxyJump \"%s\"",
1150: filename, linenum, s + len);
1151: }
1152: return 0;
1153:
1.17 markus 1154: case oPort:
1.300 naddy 1155: arg = strdelim(&s);
1156: if (!arg || *arg == '\0')
1157: fatal("%.200s line %d: Missing argument.",
1158: filename, linenum);
1159: value = a2port(arg);
1160: if (value <= 0)
1161: fatal("%.200s line %d: Bad port '%s'.",
1162: filename, linenum, arg);
1163: if (*activep && options->port == -1)
1164: options->port = value;
1165: break;
1166:
1167: case oConnectionAttempts:
1168: intptr = &options->connection_attempts;
1.17 markus 1169: parse_int:
1.42 provos 1170: arg = strdelim(&s);
1.281 dtucker 1171: if ((errstr = atoi_err(arg, &value)) != NULL)
1172: fatal("%s line %d: integer value %s.",
1173: filename, linenum, errstr);
1.17 markus 1174: if (*activep && *intptr == -1)
1175: *intptr = value;
1176: break;
1177:
1.25 markus 1178: case oCiphers:
1.42 provos 1179: arg = strdelim(&s);
1.40 ho 1180: if (!arg || *arg == '\0')
1.32 markus 1181: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.268 djm 1182: if (*arg != '-' && !ciphers_valid(*arg == '+' ? arg + 1 : arg))
1.31 markus 1183: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1184: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1185: if (*activep && options->ciphers == NULL)
1.38 provos 1186: options->ciphers = xstrdup(arg);
1.25 markus 1187: break;
1188:
1.62 markus 1189: case oMacs:
1190: arg = strdelim(&s);
1191: if (!arg || *arg == '\0')
1192: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.268 djm 1193: if (*arg != '-' && !mac_valid(*arg == '+' ? arg + 1 : arg))
1.62 markus 1194: fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
1.93 deraadt 1195: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1196: if (*activep && options->macs == NULL)
1197: options->macs = xstrdup(arg);
1198: break;
1199:
1.189 djm 1200: case oKexAlgorithms:
1201: arg = strdelim(&s);
1202: if (!arg || *arg == '\0')
1203: fatal("%.200s line %d: Missing argument.",
1204: filename, linenum);
1.268 djm 1205: if (*arg != '-' &&
1206: !kex_names_valid(*arg == '+' ? arg + 1 : arg))
1.189 djm 1207: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1208: filename, linenum, arg ? arg : "<NONE>");
1209: if (*activep && options->kex_algorithms == NULL)
1210: options->kex_algorithms = xstrdup(arg);
1211: break;
1212:
1.76 markus 1213: case oHostKeyAlgorithms:
1.238 markus 1214: charptr = &options->hostkeyalgorithms;
1215: parse_keytypes:
1.76 markus 1216: arg = strdelim(&s);
1217: if (!arg || *arg == '\0')
1.238 markus 1218: fatal("%.200s line %d: Missing argument.",
1219: filename, linenum);
1.268 djm 1220: if (*arg != '-' &&
1221: !sshkey_names_valid2(*arg == '+' ? arg + 1 : arg, 1))
1.238 markus 1222: fatal("%s line %d: Bad key types '%s'.",
1223: filename, linenum, arg ? arg : "<NONE>");
1224: if (*activep && *charptr == NULL)
1225: *charptr = xstrdup(arg);
1.76 markus 1226: break;
1227:
1.298 djm 1228: case oCASignatureAlgorithms:
1229: charptr = &options->ca_sign_algorithms;
1230: goto parse_keytypes;
1231:
1.17 markus 1232: case oLogLevel:
1.164 dtucker 1233: log_level_ptr = &options->log_level;
1.42 provos 1234: arg = strdelim(&s);
1.38 provos 1235: value = log_level_number(arg);
1.95 markus 1236: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1237: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1238: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1239: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1240: *log_level_ptr = (LogLevel) value;
1.17 markus 1241: break;
1242:
1.271 dtucker 1243: case oLogFacility:
1244: log_facility_ptr = &options->log_facility;
1245: arg = strdelim(&s);
1246: value = log_facility_number(arg);
1247: if (value == SYSLOG_FACILITY_NOT_SET)
1248: fatal("%.200s line %d: unsupported log facility '%s'",
1249: filename, linenum, arg ? arg : "<NONE>");
1250: if (*log_facility_ptr == -1)
1251: *log_facility_ptr = (SyslogFacility) value;
1252: break;
1253:
1.88 stevesk 1254: case oLocalForward:
1.17 markus 1255: case oRemoteForward:
1.168 stevesk 1256: case oDynamicForward:
1.42 provos 1257: arg = strdelim(&s);
1.135 djm 1258: if (arg == NULL || *arg == '\0')
1.88 stevesk 1259: fatal("%.200s line %d: Missing port argument.",
1260: filename, linenum);
1.135 djm 1261:
1.279 markus 1262: remotefwd = (opcode == oRemoteForward);
1263: dynamicfwd = (opcode == oDynamicForward);
1264:
1265: if (!dynamicfwd) {
1.168 stevesk 1266: arg2 = strdelim(&s);
1.279 markus 1267: if (arg2 == NULL || *arg2 == '\0') {
1268: if (remotefwd)
1269: dynamicfwd = 1;
1270: else
1271: fatal("%.200s line %d: Missing target "
1272: "argument.", filename, linenum);
1273: } else {
1274: /* construct a string for parse_forward */
1275: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1276: arg2);
1277: }
1278: }
1279: if (dynamicfwd)
1.168 stevesk 1280: strlcpy(fwdarg, arg, sizeof(fwdarg));
1281:
1.279 markus 1282: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0)
1.88 stevesk 1283: fatal("%.200s line %d: Bad forwarding specification.",
1284: filename, linenum);
1.135 djm 1285:
1.88 stevesk 1286: if (*activep) {
1.279 markus 1287: if (remotefwd) {
1288: add_remote_forward(options, &fwd);
1289: } else {
1.135 djm 1290: add_local_forward(options, &fwd);
1.279 markus 1291: }
1.88 stevesk 1292: }
1.17 markus 1293: break;
1.71 markus 1294:
1.90 stevesk 1295: case oClearAllForwardings:
1296: intptr = &options->clear_forwardings;
1297: goto parse_flag;
1298:
1.17 markus 1299: case oHost:
1.206 djm 1300: if (cmdline)
1301: fatal("Host directive not supported as a command-line "
1302: "option");
1.17 markus 1303: *activep = 0;
1.191 djm 1304: arg2 = NULL;
1305: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.252 djm 1306: if ((flags & SSHCONF_NEVERMATCH) != 0)
1307: break;
1.191 djm 1308: negated = *arg == '!';
1309: if (negated)
1310: arg++;
1.38 provos 1311: if (match_pattern(host, arg)) {
1.191 djm 1312: if (negated) {
1313: debug("%.200s line %d: Skipping Host "
1314: "block because of negated match "
1315: "for %.100s", filename, linenum,
1316: arg);
1317: *activep = 0;
1318: break;
1319: }
1320: if (!*activep)
1321: arg2 = arg; /* logged below */
1.17 markus 1322: *activep = 1;
1323: }
1.191 djm 1324: }
1325: if (*activep)
1326: debug("%.200s line %d: Applying options for %.100s",
1327: filename, linenum, arg2);
1.42 provos 1328: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1329: return 0;
1330:
1.206 djm 1331: case oMatch:
1332: if (cmdline)
1333: fatal("Host directive not supported as a command-line "
1334: "option");
1.221 djm 1335: value = match_cfg_line(options, &s, pw, host, original_host,
1.302 djm 1336: flags & SSHCONF_FINAL, want_final_pass,
1337: filename, linenum);
1.206 djm 1338: if (value < 0)
1339: fatal("%.200s line %d: Bad Match condition", filename,
1340: linenum);
1.252 djm 1341: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.206 djm 1342: break;
1343:
1.17 markus 1344: case oEscapeChar:
1345: intptr = &options->escape_char;
1.42 provos 1346: arg = strdelim(&s);
1.40 ho 1347: if (!arg || *arg == '\0')
1.17 markus 1348: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1349: if (strcmp(arg, "none") == 0)
1350: value = SSH_ESCAPECHAR_NONE;
1351: else if (arg[1] == '\0')
1352: value = (u_char) arg[0];
1353: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1354: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1355: value = (u_char) arg[1] & 31;
1.17 markus 1356: else {
1357: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1358: filename, linenum);
1.17 markus 1359: /* NOTREACHED */
1360: value = 0; /* Avoid compiler warning. */
1361: }
1362: if (*activep && *intptr == -1)
1363: *intptr = value;
1.112 djm 1364: break;
1365:
1366: case oAddressFamily:
1.114 djm 1367: intptr = &options->address_family;
1.207 djm 1368: multistate_ptr = multistate_addressfamily;
1369: goto parse_multistate;
1.17 markus 1370:
1.101 markus 1371: case oEnableSSHKeysign:
1372: intptr = &options->enable_ssh_keysign;
1373: goto parse_flag;
1374:
1.128 markus 1375: case oIdentitiesOnly:
1376: intptr = &options->identities_only;
1377: goto parse_flag;
1378:
1.127 markus 1379: case oServerAliveInterval:
1380: intptr = &options->server_alive_interval;
1381: goto parse_time;
1382:
1383: case oServerAliveCountMax:
1384: intptr = &options->server_alive_count_max;
1385: goto parse_int;
1386:
1.130 djm 1387: case oSendEnv:
1388: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1389: if (strchr(arg, '=') != NULL)
1390: fatal("%s line %d: Invalid environment name.",
1391: filename, linenum);
1.137 djm 1392: if (!*activep)
1393: continue;
1.286 djm 1394: if (*arg == '-') {
1395: /* Removing an env var */
1396: rm_env(options, arg, filename, linenum);
1397: continue;
1398: } else {
1399: /* Adding an env var */
1.290 djm 1400: if (options->num_send_env >= INT_MAX)
1.286 djm 1401: fatal("%s line %d: too many send env.",
1402: filename, linenum);
1.290 djm 1403: options->send_env = xrecallocarray(
1404: options->send_env, options->num_send_env,
1.291 djm 1405: options->num_send_env + 1,
1.290 djm 1406: sizeof(*options->send_env));
1.286 djm 1407: options->send_env[options->num_send_env++] =
1408: xstrdup(arg);
1409: }
1.130 djm 1410: }
1411: break;
1412:
1.290 djm 1413: case oSetEnv:
1414: value = options->num_setenv;
1415: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1416: if (strchr(arg, '=') == NULL)
1417: fatal("%s line %d: Invalid SetEnv.",
1418: filename, linenum);
1419: if (!*activep || value != 0)
1420: continue;
1421: /* Adding a setenv var */
1422: if (options->num_setenv >= INT_MAX)
1423: fatal("%s line %d: too many SetEnv.",
1424: filename, linenum);
1425: options->setenv = xrecallocarray(
1426: options->setenv, options->num_setenv,
1427: options->num_setenv + 1, sizeof(*options->setenv));
1428: options->setenv[options->num_setenv++] = xstrdup(arg);
1429: }
1430: break;
1431:
1.132 djm 1432: case oControlPath:
1433: charptr = &options->control_path;
1434: goto parse_string;
1435:
1436: case oControlMaster:
1437: intptr = &options->control_master;
1.207 djm 1438: multistate_ptr = multistate_controlmaster;
1439: goto parse_multistate;
1.132 djm 1440:
1.187 djm 1441: case oControlPersist:
1442: /* no/false/yes/true, or a time spec */
1443: intptr = &options->control_persist;
1444: arg = strdelim(&s);
1445: if (!arg || *arg == '\0')
1446: fatal("%.200s line %d: Missing ControlPersist"
1447: " argument.", filename, linenum);
1448: value = 0;
1449: value2 = 0; /* timeout */
1450: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1451: value = 0;
1452: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1453: value = 1;
1454: else if ((value2 = convtime(arg)) >= 0)
1455: value = 1;
1456: else
1457: fatal("%.200s line %d: Bad ControlPersist argument.",
1458: filename, linenum);
1459: if (*activep && *intptr == -1) {
1460: *intptr = value;
1461: options->control_persist_timeout = value2;
1462: }
1463: break;
1464:
1.136 djm 1465: case oHashKnownHosts:
1466: intptr = &options->hash_known_hosts;
1467: goto parse_flag;
1468:
1.144 reyk 1469: case oTunnel:
1470: intptr = &options->tun_open;
1.207 djm 1471: multistate_ptr = multistate_tunnel;
1472: goto parse_multistate;
1.144 reyk 1473:
1474: case oTunnelDevice:
1475: arg = strdelim(&s);
1476: if (!arg || *arg == '\0')
1477: fatal("%.200s line %d: Missing argument.", filename, linenum);
1478: value = a2tun(arg, &value2);
1.145 reyk 1479: if (value == SSH_TUNID_ERR)
1.144 reyk 1480: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1481: if (*activep) {
1482: options->tun_local = value;
1483: options->tun_remote = value2;
1484: }
1485: break;
1486:
1487: case oLocalCommand:
1488: charptr = &options->local_command;
1489: goto parse_command;
1490:
1491: case oPermitLocalCommand:
1492: intptr = &options->permit_local_command;
1493: goto parse_flag;
1494:
1.277 bluhm 1495: case oRemoteCommand:
1496: charptr = &options->remote_command;
1497: goto parse_command;
1498:
1.167 grunk 1499: case oVisualHostKey:
1500: intptr = &options->visual_host_key;
1501: goto parse_flag;
1502:
1.252 djm 1503: case oInclude:
1504: if (cmdline)
1505: fatal("Include directive not supported as a "
1506: "command-line option");
1507: value = 0;
1508: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1509: /*
1510: * Ensure all paths are anchored. User configuration
1511: * files may begin with '~/' but system configurations
1512: * must not. If the path is relative, then treat it
1513: * as living in ~/.ssh for user configurations or
1514: * /etc/ssh for system ones.
1515: */
1516: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0)
1517: fatal("%.200s line %d: bad include path %s.",
1518: filename, linenum, arg);
1.301 djm 1519: if (!path_absolute(arg) && *arg != '~') {
1.252 djm 1520: xasprintf(&arg2, "%s/%s",
1521: (flags & SSHCONF_USERCONF) ?
1522: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1523: } else
1524: arg2 = xstrdup(arg);
1525: memset(&gl, 0, sizeof(gl));
1526: r = glob(arg2, GLOB_TILDE, NULL, &gl);
1527: if (r == GLOB_NOMATCH) {
1528: debug("%.200s line %d: include %s matched no "
1529: "files",filename, linenum, arg2);
1.269 dtucker 1530: free(arg2);
1.252 djm 1531: continue;
1532: } else if (r != 0 || gl.gl_pathc < 0)
1533: fatal("%.200s line %d: glob failed for %s.",
1534: filename, linenum, arg2);
1535: free(arg2);
1536: oactive = *activep;
1537: for (i = 0; i < (u_int)gl.gl_pathc; i++) {
1538: debug3("%.200s line %d: Including file %s "
1539: "depth %d%s", filename, linenum,
1540: gl.gl_pathv[i], depth,
1541: oactive ? "" : " (parse only)");
1542: r = read_config_file_depth(gl.gl_pathv[i],
1543: pw, host, original_host, options,
1544: flags | SSHCONF_CHECKPERM |
1545: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.302 djm 1546: activep, want_final_pass, depth + 1);
1.264 djm 1547: if (r != 1 && errno != ENOENT) {
1.263 djm 1548: fatal("Can't open user config file "
1549: "%.100s: %.100s", gl.gl_pathv[i],
1550: strerror(errno));
1551: }
1.252 djm 1552: /*
1553: * don't let Match in includes clobber the
1554: * containing file's Match state.
1555: */
1556: *activep = oactive;
1557: if (r != 1)
1558: value = -1;
1559: }
1560: globfree(&gl);
1561: }
1562: if (value != 0)
1563: return value;
1564: break;
1565:
1.190 djm 1566: case oIPQoS:
1567: arg = strdelim(&s);
1568: if ((value = parse_ipqos(arg)) == -1)
1569: fatal("%s line %d: Bad IPQoS value: %s",
1570: filename, linenum, arg);
1571: arg = strdelim(&s);
1572: if (arg == NULL)
1573: value2 = value;
1574: else if ((value2 = parse_ipqos(arg)) == -1)
1575: fatal("%s line %d: Bad IPQoS value: %s",
1576: filename, linenum, arg);
1577: if (*activep) {
1578: options->ip_qos_interactive = value;
1579: options->ip_qos_bulk = value2;
1580: }
1581: break;
1582:
1.192 djm 1583: case oRequestTTY:
1584: intptr = &options->request_tty;
1.207 djm 1585: multistate_ptr = multistate_requesttty;
1586: goto parse_multistate;
1.192 djm 1587:
1.199 djm 1588: case oIgnoreUnknown:
1589: charptr = &options->ignored_unknown;
1590: goto parse_string;
1591:
1.205 djm 1592: case oProxyUseFdpass:
1593: intptr = &options->proxy_use_fdpass;
1594: goto parse_flag;
1595:
1.208 djm 1596: case oCanonicalDomains:
1597: value = options->num_canonical_domains != 0;
1598: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.280 millert 1599: if (!valid_domain(arg, 1, &errstr)) {
1600: fatal("%s line %d: %s", filename, linenum,
1601: errstr);
1602: }
1.208 djm 1603: if (!*activep || value)
1604: continue;
1605: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1606: fatal("%s line %d: too many hostname suffixes.",
1607: filename, linenum);
1608: options->canonical_domains[
1609: options->num_canonical_domains++] = xstrdup(arg);
1610: }
1611: break;
1612:
1.209 djm 1613: case oCanonicalizePermittedCNAMEs:
1.208 djm 1614: value = options->num_permitted_cnames != 0;
1615: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1616: /* Either '*' for everything or 'list:list' */
1617: if (strcmp(arg, "*") == 0)
1618: arg2 = arg;
1619: else {
1620: lowercase(arg);
1621: if ((arg2 = strchr(arg, ':')) == NULL ||
1622: arg2[1] == '\0') {
1623: fatal("%s line %d: "
1624: "Invalid permitted CNAME \"%s\"",
1625: filename, linenum, arg);
1626: }
1627: *arg2 = '\0';
1628: arg2++;
1629: }
1630: if (!*activep || value)
1631: continue;
1632: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1633: fatal("%s line %d: too many permitted CNAMEs.",
1634: filename, linenum);
1635: cname = options->permitted_cnames +
1636: options->num_permitted_cnames++;
1637: cname->source_list = xstrdup(arg);
1638: cname->target_list = xstrdup(arg2);
1639: }
1640: break;
1641:
1.209 djm 1642: case oCanonicalizeHostname:
1643: intptr = &options->canonicalize_hostname;
1644: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1645: goto parse_multistate;
1646:
1.209 djm 1647: case oCanonicalizeMaxDots:
1648: intptr = &options->canonicalize_max_dots;
1.208 djm 1649: goto parse_int;
1650:
1.209 djm 1651: case oCanonicalizeFallbackLocal:
1652: intptr = &options->canonicalize_fallback_local;
1.208 djm 1653: goto parse_flag;
1654:
1.220 millert 1655: case oStreamLocalBindMask:
1656: arg = strdelim(&s);
1657: if (!arg || *arg == '\0')
1658: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1659: /* Parse mode in octal format */
1660: value = strtol(arg, &endofnumber, 8);
1661: if (arg == endofnumber || value < 0 || value > 0777)
1662: fatal("%.200s line %d: Bad mask.", filename, linenum);
1663: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1664: break;
1665:
1666: case oStreamLocalBindUnlink:
1667: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1668: goto parse_flag;
1669:
1.223 djm 1670: case oRevokedHostKeys:
1671: charptr = &options->revoked_host_keys;
1672: goto parse_string;
1673:
1.224 djm 1674: case oFingerprintHash:
1.225 djm 1675: intptr = &options->fingerprint_hash;
1.224 djm 1676: arg = strdelim(&s);
1677: if (!arg || *arg == '\0')
1678: fatal("%.200s line %d: Missing argument.",
1679: filename, linenum);
1680: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1681: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1682: filename, linenum, arg);
1.225 djm 1683: if (*activep && *intptr == -1)
1684: *intptr = value;
1.224 djm 1685: break;
1686:
1.229 djm 1687: case oUpdateHostkeys:
1688: intptr = &options->update_hostkeys;
1.232 djm 1689: multistate_ptr = multistate_yesnoask;
1690: goto parse_multistate;
1.229 djm 1691:
1.230 djm 1692: case oHostbasedKeyTypes:
1693: charptr = &options->hostbased_key_types;
1.238 markus 1694: goto parse_keytypes;
1695:
1696: case oPubkeyAcceptedKeyTypes:
1697: charptr = &options->pubkey_key_types;
1698: goto parse_keytypes;
1.230 djm 1699:
1.246 jcs 1700: case oAddKeysToAgent:
1701: intptr = &options->add_keys_to_agent;
1702: multistate_ptr = multistate_yesnoaskconfirm;
1703: goto parse_multistate;
1704:
1.253 markus 1705: case oIdentityAgent:
1706: charptr = &options->identity_agent;
1.299 djm 1707: arg = strdelim(&s);
1708: if (!arg || *arg == '\0')
1709: fatal("%.200s line %d: Missing argument.",
1710: filename, linenum);
1711: /* Extra validation if the string represents an env var. */
1712: if (arg[0] == '$' && !valid_env_name(arg + 1)) {
1713: fatal("%.200s line %d: Invalid environment name %s.",
1714: filename, linenum, arg);
1715: }
1716: if (*activep && *charptr == NULL)
1717: *charptr = xstrdup(arg);
1718: break;
1.253 markus 1719:
1.96 markus 1720: case oDeprecated:
1.98 markus 1721: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1722: filename, linenum, keyword);
1.98 markus 1723: return 0;
1.96 markus 1724:
1.110 jakob 1725: case oUnsupported:
1726: error("%s line %d: Unsupported option \"%s\"",
1727: filename, linenum, keyword);
1728: return 0;
1729:
1.17 markus 1730: default:
1.221 djm 1731: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1732: }
1733:
1734: /* Check that there is no garbage at end of line. */
1.57 djm 1735: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1736: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1737: filename, linenum, arg);
1.39 ho 1738: }
1.17 markus 1739: return 0;
1.1 deraadt 1740: }
1741:
1.19 markus 1742: /*
1743: * Reads the config file and modifies the options accordingly. Options
1744: * should already be initialized before this call. This never returns if
1.89 stevesk 1745: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1746: */
1.89 stevesk 1747: int
1.206 djm 1748: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.302 djm 1749: const char *original_host, Options *options, int flags,
1750: int *want_final_pass)
1.1 deraadt 1751: {
1.252 djm 1752: int active = 1;
1753:
1754: return read_config_file_depth(filename, pw, host, original_host,
1.302 djm 1755: options, flags, &active, want_final_pass, 0);
1.252 djm 1756: }
1757:
1758: #define READCONF_MAX_DEPTH 16
1759: static int
1760: read_config_file_depth(const char *filename, struct passwd *pw,
1761: const char *host, const char *original_host, Options *options,
1.302 djm 1762: int flags, int *activep, int *want_final_pass, int depth)
1.252 djm 1763: {
1.17 markus 1764: FILE *f;
1.289 markus 1765: char *line = NULL;
1766: size_t linesize = 0;
1.252 djm 1767: int linenum;
1.17 markus 1768: int bad_options = 0;
1769:
1.252 djm 1770: if (depth < 0 || depth > READCONF_MAX_DEPTH)
1771: fatal("Too many recursive configuration includes");
1772:
1.129 djm 1773: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1774: return 0;
1.129 djm 1775:
1.196 dtucker 1776: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1777: struct stat sb;
1.134 deraadt 1778:
1.131 dtucker 1779: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1780: fatal("fstat %s: %s", filename, strerror(errno));
1781: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1782: (sb.st_mode & 022) != 0))
1.129 djm 1783: fatal("Bad owner or permissions on %s", filename);
1784: }
1.17 markus 1785:
1786: debug("Reading configuration data %.200s", filename);
1787:
1.19 markus 1788: /*
1789: * Mark that we are now processing the options. This flag is turned
1790: * on/off by Host specifications.
1791: */
1.17 markus 1792: linenum = 0;
1.289 markus 1793: while (getline(&line, &linesize, f) != -1) {
1.17 markus 1794: /* Update line number counter. */
1795: linenum++;
1.252 djm 1796: if (process_config_line_depth(options, pw, host, original_host,
1.302 djm 1797: line, filename, linenum, activep, flags, want_final_pass,
1798: depth) != 0)
1.17 markus 1799: bad_options++;
1800: }
1.289 markus 1801: free(line);
1.17 markus 1802: fclose(f);
1803: if (bad_options > 0)
1.64 millert 1804: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1805: filename, bad_options);
1.89 stevesk 1806: return 1;
1.1 deraadt 1807: }
1808:
1.218 djm 1809: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1810: int
1811: option_clear_or_none(const char *o)
1812: {
1813: return o == NULL || strcasecmp(o, "none") == 0;
1814: }
1815:
1.19 markus 1816: /*
1817: * Initializes options to special values that indicate that they have not yet
1818: * been set. Read_config_file will only set options with this value. Options
1819: * are processed in the following order: command line, user config file,
1820: * system config file. Last, fill_default_options is called.
1821: */
1.1 deraadt 1822:
1.26 markus 1823: void
1.17 markus 1824: initialize_options(Options * options)
1.1 deraadt 1825: {
1.17 markus 1826: memset(options, 'X', sizeof(*options));
1827: options->forward_agent = -1;
1828: options->forward_x11 = -1;
1.123 markus 1829: options->forward_x11_trusted = -1;
1.186 djm 1830: options->forward_x11_timeout = -1;
1.255 dtucker 1831: options->stdio_forward_host = NULL;
1832: options->stdio_forward_port = 0;
1.256 dtucker 1833: options->clear_forwardings = -1;
1.153 markus 1834: options->exit_on_forward_failure = -1;
1.34 markus 1835: options->xauth_location = NULL;
1.220 millert 1836: options->fwd_opts.gateway_ports = -1;
1837: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1838: options->fwd_opts.streamlocal_bind_unlink = -1;
1.50 markus 1839: options->pubkey_authentication = -1;
1.78 markus 1840: options->challenge_response_authentication = -1;
1.118 markus 1841: options->gss_authentication = -1;
1842: options->gss_deleg_creds = -1;
1.17 markus 1843: options->password_authentication = -1;
1.48 markus 1844: options->kbd_interactive_authentication = -1;
1845: options->kbd_interactive_devices = NULL;
1.72 markus 1846: options->hostbased_authentication = -1;
1.17 markus 1847: options->batch_mode = -1;
1848: options->check_host_ip = -1;
1849: options->strict_host_key_checking = -1;
1850: options->compression = -1;
1.126 markus 1851: options->tcp_keep_alive = -1;
1.17 markus 1852: options->port = -1;
1.114 djm 1853: options->address_family = -1;
1.17 markus 1854: options->connection_attempts = -1;
1.111 djm 1855: options->connection_timeout = -1;
1.17 markus 1856: options->number_of_password_prompts = -1;
1.25 markus 1857: options->ciphers = NULL;
1.62 markus 1858: options->macs = NULL;
1.189 djm 1859: options->kex_algorithms = NULL;
1.76 markus 1860: options->hostkeyalgorithms = NULL;
1.298 djm 1861: options->ca_sign_algorithms = NULL;
1.17 markus 1862: options->num_identity_files = 0;
1.241 djm 1863: options->num_certificate_files = 0;
1.17 markus 1864: options->hostname = NULL;
1.52 markus 1865: options->host_key_alias = NULL;
1.17 markus 1866: options->proxy_command = NULL;
1.257 djm 1867: options->jump_user = NULL;
1868: options->jump_host = NULL;
1869: options->jump_port = -1;
1870: options->jump_extra = NULL;
1.17 markus 1871: options->user = NULL;
1872: options->escape_char = -1;
1.193 djm 1873: options->num_system_hostfiles = 0;
1874: options->num_user_hostfiles = 0;
1.185 djm 1875: options->local_forwards = NULL;
1.17 markus 1876: options->num_local_forwards = 0;
1.185 djm 1877: options->remote_forwards = NULL;
1.17 markus 1878: options->num_remote_forwards = 0;
1.271 dtucker 1879: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.95 markus 1880: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1881: options->preferred_authentications = NULL;
1.77 markus 1882: options->bind_address = NULL;
1.282 djm 1883: options->bind_interface = NULL;
1.183 markus 1884: options->pkcs11_provider = NULL;
1.101 markus 1885: options->enable_ssh_keysign = - 1;
1.91 markus 1886: options->no_host_authentication_for_localhost = - 1;
1.128 markus 1887: options->identities_only = - 1;
1.105 markus 1888: options->rekey_limit = - 1;
1.198 dtucker 1889: options->rekey_interval = -1;
1.107 jakob 1890: options->verify_host_key_dns = -1;
1.127 markus 1891: options->server_alive_interval = -1;
1892: options->server_alive_count_max = -1;
1.290 djm 1893: options->send_env = NULL;
1.130 djm 1894: options->num_send_env = 0;
1.290 djm 1895: options->setenv = NULL;
1896: options->num_setenv = 0;
1.132 djm 1897: options->control_path = NULL;
1898: options->control_master = -1;
1.187 djm 1899: options->control_persist = -1;
1900: options->control_persist_timeout = 0;
1.136 djm 1901: options->hash_known_hosts = -1;
1.144 reyk 1902: options->tun_open = -1;
1903: options->tun_local = -1;
1904: options->tun_remote = -1;
1905: options->local_command = NULL;
1906: options->permit_local_command = -1;
1.277 bluhm 1907: options->remote_command = NULL;
1.246 jcs 1908: options->add_keys_to_agent = -1;
1.253 markus 1909: options->identity_agent = NULL;
1.167 grunk 1910: options->visual_host_key = -1;
1.190 djm 1911: options->ip_qos_interactive = -1;
1912: options->ip_qos_bulk = -1;
1.192 djm 1913: options->request_tty = -1;
1.205 djm 1914: options->proxy_use_fdpass = -1;
1.199 djm 1915: options->ignored_unknown = NULL;
1.208 djm 1916: options->num_canonical_domains = 0;
1917: options->num_permitted_cnames = 0;
1.209 djm 1918: options->canonicalize_max_dots = -1;
1919: options->canonicalize_fallback_local = -1;
1920: options->canonicalize_hostname = -1;
1.223 djm 1921: options->revoked_host_keys = NULL;
1.224 djm 1922: options->fingerprint_hash = -1;
1.229 djm 1923: options->update_hostkeys = -1;
1.230 djm 1924: options->hostbased_key_types = NULL;
1.238 markus 1925: options->pubkey_key_types = NULL;
1.1 deraadt 1926: }
1927:
1.19 markus 1928: /*
1.218 djm 1929: * A petite version of fill_default_options() that just fills the options
1930: * needed for hostname canonicalization to proceed.
1931: */
1932: void
1933: fill_default_options_for_canonicalization(Options *options)
1934: {
1935: if (options->canonicalize_max_dots == -1)
1936: options->canonicalize_max_dots = 1;
1937: if (options->canonicalize_fallback_local == -1)
1938: options->canonicalize_fallback_local = 1;
1939: if (options->canonicalize_hostname == -1)
1940: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1941: }
1942:
1943: /*
1.19 markus 1944: * Called after processing other sources of option data, this fills those
1945: * options for which no value has been specified with their default values.
1946: */
1.26 markus 1947: void
1.17 markus 1948: fill_default_options(Options * options)
1.1 deraadt 1949: {
1.298 djm 1950: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.297 djm 1951: int r;
1.292 djm 1952:
1.17 markus 1953: if (options->forward_agent == -1)
1.33 markus 1954: options->forward_agent = 0;
1.17 markus 1955: if (options->forward_x11 == -1)
1.23 markus 1956: options->forward_x11 = 0;
1.123 markus 1957: if (options->forward_x11_trusted == -1)
1958: options->forward_x11_trusted = 0;
1.186 djm 1959: if (options->forward_x11_timeout == -1)
1960: options->forward_x11_timeout = 1200;
1.256 dtucker 1961: /*
1962: * stdio forwarding (-W) changes the default for these but we defer
1963: * setting the values so they can be overridden.
1964: */
1.153 markus 1965: if (options->exit_on_forward_failure == -1)
1.256 dtucker 1966: options->exit_on_forward_failure =
1967: options->stdio_forward_host != NULL ? 1 : 0;
1968: if (options->clear_forwardings == -1)
1969: options->clear_forwardings =
1970: options->stdio_forward_host != NULL ? 1 : 0;
1971: if (options->clear_forwardings == 1)
1972: clear_forwardings(options);
1973:
1.34 markus 1974: if (options->xauth_location == NULL)
1.80 markus 1975: options->xauth_location = _PATH_XAUTH;
1.220 millert 1976: if (options->fwd_opts.gateway_ports == -1)
1977: options->fwd_opts.gateway_ports = 0;
1978: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
1979: options->fwd_opts.streamlocal_bind_mask = 0177;
1980: if (options->fwd_opts.streamlocal_bind_unlink == -1)
1981: options->fwd_opts.streamlocal_bind_unlink = 0;
1.50 markus 1982: if (options->pubkey_authentication == -1)
1983: options->pubkey_authentication = 1;
1.78 markus 1984: if (options->challenge_response_authentication == -1)
1.83 markus 1985: options->challenge_response_authentication = 1;
1.118 markus 1986: if (options->gss_authentication == -1)
1.122 markus 1987: options->gss_authentication = 0;
1.118 markus 1988: if (options->gss_deleg_creds == -1)
1989: options->gss_deleg_creds = 0;
1.17 markus 1990: if (options->password_authentication == -1)
1991: options->password_authentication = 1;
1.48 markus 1992: if (options->kbd_interactive_authentication == -1)
1.59 markus 1993: options->kbd_interactive_authentication = 1;
1.72 markus 1994: if (options->hostbased_authentication == -1)
1995: options->hostbased_authentication = 0;
1.17 markus 1996: if (options->batch_mode == -1)
1997: options->batch_mode = 0;
1998: if (options->check_host_ip == -1)
1999: options->check_host_ip = 1;
2000: if (options->strict_host_key_checking == -1)
1.278 djm 2001: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.17 markus 2002: if (options->compression == -1)
2003: options->compression = 0;
1.126 markus 2004: if (options->tcp_keep_alive == -1)
2005: options->tcp_keep_alive = 1;
1.17 markus 2006: if (options->port == -1)
2007: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 2008: if (options->address_family == -1)
2009: options->address_family = AF_UNSPEC;
1.17 markus 2010: if (options->connection_attempts == -1)
1.84 markus 2011: options->connection_attempts = 1;
1.17 markus 2012: if (options->number_of_password_prompts == -1)
2013: options->number_of_password_prompts = 3;
1.76 markus 2014: /* options->hostkeyalgorithms, default set in myproposals.h */
1.246 jcs 2015: if (options->add_keys_to_agent == -1)
2016: options->add_keys_to_agent = 0;
1.17 markus 2017: if (options->num_identity_files == 0) {
1.273 djm 2018: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2019: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2020: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2021: add_identity_file(options, "~/",
2022: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.283 markus 2023: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.27 markus 2024: }
1.17 markus 2025: if (options->escape_char == -1)
2026: options->escape_char = '~';
1.193 djm 2027: if (options->num_system_hostfiles == 0) {
2028: options->system_hostfiles[options->num_system_hostfiles++] =
2029: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2030: options->system_hostfiles[options->num_system_hostfiles++] =
2031: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2032: }
2033: if (options->num_user_hostfiles == 0) {
2034: options->user_hostfiles[options->num_user_hostfiles++] =
2035: xstrdup(_PATH_SSH_USER_HOSTFILE);
2036: options->user_hostfiles[options->num_user_hostfiles++] =
2037: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2038: }
1.95 markus 2039: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 2040: options->log_level = SYSLOG_LEVEL_INFO;
1.271 dtucker 2041: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2042: options->log_facility = SYSLOG_FACILITY_USER;
1.91 markus 2043: if (options->no_host_authentication_for_localhost == - 1)
2044: options->no_host_authentication_for_localhost = 0;
1.128 markus 2045: if (options->identities_only == -1)
2046: options->identities_only = 0;
1.101 markus 2047: if (options->enable_ssh_keysign == -1)
2048: options->enable_ssh_keysign = 0;
1.105 markus 2049: if (options->rekey_limit == -1)
2050: options->rekey_limit = 0;
1.198 dtucker 2051: if (options->rekey_interval == -1)
2052: options->rekey_interval = 0;
1.107 jakob 2053: if (options->verify_host_key_dns == -1)
2054: options->verify_host_key_dns = 0;
1.127 markus 2055: if (options->server_alive_interval == -1)
2056: options->server_alive_interval = 0;
2057: if (options->server_alive_count_max == -1)
2058: options->server_alive_count_max = 3;
1.132 djm 2059: if (options->control_master == -1)
2060: options->control_master = 0;
1.187 djm 2061: if (options->control_persist == -1) {
2062: options->control_persist = 0;
2063: options->control_persist_timeout = 0;
2064: }
1.136 djm 2065: if (options->hash_known_hosts == -1)
2066: options->hash_known_hosts = 0;
1.144 reyk 2067: if (options->tun_open == -1)
1.145 reyk 2068: options->tun_open = SSH_TUNMODE_NO;
2069: if (options->tun_local == -1)
2070: options->tun_local = SSH_TUNID_ANY;
2071: if (options->tun_remote == -1)
2072: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 2073: if (options->permit_local_command == -1)
2074: options->permit_local_command = 0;
1.167 grunk 2075: if (options->visual_host_key == -1)
2076: options->visual_host_key = 0;
1.190 djm 2077: if (options->ip_qos_interactive == -1)
1.284 job 2078: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.190 djm 2079: if (options->ip_qos_bulk == -1)
1.284 job 2080: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.192 djm 2081: if (options->request_tty == -1)
2082: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 2083: if (options->proxy_use_fdpass == -1)
2084: options->proxy_use_fdpass = 0;
1.209 djm 2085: if (options->canonicalize_max_dots == -1)
2086: options->canonicalize_max_dots = 1;
2087: if (options->canonicalize_fallback_local == -1)
2088: options->canonicalize_fallback_local = 1;
2089: if (options->canonicalize_hostname == -1)
2090: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 2091: if (options->fingerprint_hash == -1)
2092: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.229 djm 2093: if (options->update_hostkeys == -1)
1.231 djm 2094: options->update_hostkeys = 0;
1.292 djm 2095:
2096: /* Expand KEX name lists */
2097: all_cipher = cipher_alg_list(',', 0);
2098: all_mac = mac_alg_list(',');
2099: all_kex = kex_alg_list(',');
2100: all_key = sshkey_alg_list(0, 0, 1, ',');
1.298 djm 2101: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.297 djm 2102: #define ASSEMBLE(what, defaults, all) \
2103: do { \
2104: if ((r = kex_assemble_names(&options->what, \
2105: defaults, all)) != 0) \
2106: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
2107: } while (0)
1.303 djm 2108: ASSEMBLE(ciphers, KEX_CLIENT_ENCRYPT, all_cipher);
2109: ASSEMBLE(macs, KEX_CLIENT_MAC, all_mac);
2110: ASSEMBLE(kex_algorithms, KEX_CLIENT_KEX, all_kex);
1.297 djm 2111: ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
2112: ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
1.298 djm 2113: ASSEMBLE(ca_sign_algorithms, SSH_ALLOWED_CA_SIGALGS, all_sig);
1.297 djm 2114: #undef ASSEMBLE
1.292 djm 2115: free(all_cipher);
2116: free(all_mac);
2117: free(all_kex);
2118: free(all_key);
1.298 djm 2119: free(all_sig);
1.224 djm 2120:
1.207 djm 2121: #define CLEAR_ON_NONE(v) \
2122: do { \
1.218 djm 2123: if (option_clear_or_none(v)) { \
1.207 djm 2124: free(v); \
2125: v = NULL; \
2126: } \
2127: } while(0)
2128: CLEAR_ON_NONE(options->local_command);
1.277 bluhm 2129: CLEAR_ON_NONE(options->remote_command);
1.207 djm 2130: CLEAR_ON_NONE(options->proxy_command);
2131: CLEAR_ON_NONE(options->control_path);
1.223 djm 2132: CLEAR_ON_NONE(options->revoked_host_keys);
1.304 ! djm 2133: CLEAR_ON_NONE(options->pkcs11_provider);
1.287 djm 2134: if (options->jump_host != NULL &&
2135: strcmp(options->jump_host, "none") == 0 &&
2136: options->jump_port == 0 && options->jump_user == NULL) {
2137: free(options->jump_host);
2138: options->jump_host = NULL;
2139: }
1.254 markus 2140: /* options->identity_agent distinguishes NULL from 'none' */
1.17 markus 2141: /* options->user will be set in the main program if appropriate */
2142: /* options->hostname will be set in the main program if appropriate */
1.52 markus 2143: /* options->host_key_alias should not be set by default */
1.67 markus 2144: /* options->preferred_authentications will be set in ssh */
1.135 djm 2145: }
2146:
1.220 millert 2147: struct fwdarg {
2148: char *arg;
2149: int ispath;
2150: };
2151:
2152: /*
2153: * parse_fwd_field
2154: * parses the next field in a port forwarding specification.
2155: * sets fwd to the parsed field and advances p past the colon
2156: * or sets it to NULL at end of string.
2157: * returns 0 on success, else non-zero.
2158: */
2159: static int
2160: parse_fwd_field(char **p, struct fwdarg *fwd)
2161: {
2162: char *ep, *cp = *p;
2163: int ispath = 0;
2164:
2165: if (*cp == '\0') {
2166: *p = NULL;
2167: return -1; /* end of string */
2168: }
2169:
2170: /*
2171: * A field escaped with square brackets is used literally.
2172: * XXX - allow ']' to be escaped via backslash?
2173: */
2174: if (*cp == '[') {
2175: /* find matching ']' */
2176: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2177: if (*ep == '/')
2178: ispath = 1;
2179: }
2180: /* no matching ']' or not at end of field. */
2181: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2182: return -1;
2183: /* NUL terminate the field and advance p past the colon */
2184: *ep++ = '\0';
2185: if (*ep != '\0')
2186: *ep++ = '\0';
2187: fwd->arg = cp + 1;
2188: fwd->ispath = ispath;
2189: *p = ep;
2190: return 0;
2191: }
2192:
2193: for (cp = *p; *cp != '\0'; cp++) {
2194: switch (*cp) {
2195: case '\\':
2196: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 2197: if (*cp == '\0')
2198: return -1;
1.220 millert 2199: break;
2200: case '/':
2201: ispath = 1;
2202: break;
2203: case ':':
2204: *cp++ = '\0';
2205: goto done;
2206: }
2207: }
2208: done:
2209: fwd->arg = *p;
2210: fwd->ispath = ispath;
2211: *p = cp;
2212: return 0;
2213: }
2214:
1.135 djm 2215: /*
2216: * parse_forward
2217: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 2218: * dynamicfwd == 0
1.220 millert 2219: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2220: * listenpath:connectpath
1.168 stevesk 2221: * dynamicfwd == 1
2222: * [listenhost:]listenport
1.135 djm 2223: * returns number of arguments parsed or zero on error
2224: */
2225: int
1.220 millert 2226: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 2227: {
1.220 millert 2228: struct fwdarg fwdargs[4];
2229: char *p, *cp;
1.135 djm 2230: int i;
2231:
1.220 millert 2232: memset(fwd, 0, sizeof(*fwd));
2233: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 2234:
2235: cp = p = xstrdup(fwdspec);
2236:
2237: /* skip leading spaces */
1.214 deraadt 2238: while (isspace((u_char)*cp))
1.135 djm 2239: cp++;
2240:
1.220 millert 2241: for (i = 0; i < 4; ++i) {
2242: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 2243: break;
1.220 millert 2244: }
1.135 djm 2245:
1.170 stevesk 2246: /* Check for trailing garbage */
1.220 millert 2247: if (cp != NULL && *cp != '\0') {
1.135 djm 2248: i = 0; /* failure */
1.220 millert 2249: }
1.135 djm 2250:
2251: switch (i) {
1.168 stevesk 2252: case 1:
1.220 millert 2253: if (fwdargs[0].ispath) {
2254: fwd->listen_path = xstrdup(fwdargs[0].arg);
2255: fwd->listen_port = PORT_STREAMLOCAL;
2256: } else {
2257: fwd->listen_host = NULL;
2258: fwd->listen_port = a2port(fwdargs[0].arg);
2259: }
1.168 stevesk 2260: fwd->connect_host = xstrdup("socks");
2261: break;
2262:
2263: case 2:
1.220 millert 2264: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2265: fwd->listen_path = xstrdup(fwdargs[0].arg);
2266: fwd->listen_port = PORT_STREAMLOCAL;
2267: fwd->connect_path = xstrdup(fwdargs[1].arg);
2268: fwd->connect_port = PORT_STREAMLOCAL;
2269: } else if (fwdargs[1].ispath) {
2270: fwd->listen_host = NULL;
2271: fwd->listen_port = a2port(fwdargs[0].arg);
2272: fwd->connect_path = xstrdup(fwdargs[1].arg);
2273: fwd->connect_port = PORT_STREAMLOCAL;
2274: } else {
2275: fwd->listen_host = xstrdup(fwdargs[0].arg);
2276: fwd->listen_port = a2port(fwdargs[1].arg);
2277: fwd->connect_host = xstrdup("socks");
2278: }
1.168 stevesk 2279: break;
2280:
1.135 djm 2281: case 3:
1.220 millert 2282: if (fwdargs[0].ispath) {
2283: fwd->listen_path = xstrdup(fwdargs[0].arg);
2284: fwd->listen_port = PORT_STREAMLOCAL;
2285: fwd->connect_host = xstrdup(fwdargs[1].arg);
2286: fwd->connect_port = a2port(fwdargs[2].arg);
2287: } else if (fwdargs[2].ispath) {
2288: fwd->listen_host = xstrdup(fwdargs[0].arg);
2289: fwd->listen_port = a2port(fwdargs[1].arg);
2290: fwd->connect_path = xstrdup(fwdargs[2].arg);
2291: fwd->connect_port = PORT_STREAMLOCAL;
2292: } else {
2293: fwd->listen_host = NULL;
2294: fwd->listen_port = a2port(fwdargs[0].arg);
2295: fwd->connect_host = xstrdup(fwdargs[1].arg);
2296: fwd->connect_port = a2port(fwdargs[2].arg);
2297: }
1.135 djm 2298: break;
2299:
2300: case 4:
1.220 millert 2301: fwd->listen_host = xstrdup(fwdargs[0].arg);
2302: fwd->listen_port = a2port(fwdargs[1].arg);
2303: fwd->connect_host = xstrdup(fwdargs[2].arg);
2304: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2305: break;
2306: default:
2307: i = 0; /* failure */
2308: }
2309:
1.202 djm 2310: free(p);
1.135 djm 2311:
1.168 stevesk 2312: if (dynamicfwd) {
2313: if (!(i == 1 || i == 2))
2314: goto fail_free;
2315: } else {
1.220 millert 2316: if (!(i == 3 || i == 4)) {
2317: if (fwd->connect_path == NULL &&
2318: fwd->listen_path == NULL)
2319: goto fail_free;
2320: }
2321: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2322: goto fail_free;
2323: }
2324:
1.220 millert 2325: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2326: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2327: goto fail_free;
2328: if (fwd->connect_host != NULL &&
2329: strlen(fwd->connect_host) >= NI_MAXHOST)
2330: goto fail_free;
1.220 millert 2331: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2332: if (fwd->connect_path != NULL &&
2333: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2334: goto fail_free;
1.176 djm 2335: if (fwd->listen_host != NULL &&
2336: strlen(fwd->listen_host) >= NI_MAXHOST)
2337: goto fail_free;
1.220 millert 2338: if (fwd->listen_path != NULL &&
2339: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2340: goto fail_free;
1.135 djm 2341:
2342: return (i);
2343:
2344: fail_free:
1.202 djm 2345: free(fwd->connect_host);
2346: fwd->connect_host = NULL;
1.220 millert 2347: free(fwd->connect_path);
2348: fwd->connect_path = NULL;
1.202 djm 2349: free(fwd->listen_host);
2350: fwd->listen_host = NULL;
1.220 millert 2351: free(fwd->listen_path);
2352: fwd->listen_path = NULL;
1.135 djm 2353: return (0);
1.221 djm 2354: }
2355:
1.257 djm 2356: int
2357: parse_jump(const char *s, Options *o, int active)
2358: {
2359: char *orig, *sdup, *cp;
2360: char *host = NULL, *user = NULL;
1.258 naddy 2361: int ret = -1, port = -1, first;
1.257 djm 2362:
2363: active &= o->proxy_command == NULL && o->jump_host == NULL;
2364:
2365: orig = sdup = xstrdup(s);
1.258 naddy 2366: first = active;
1.259 djm 2367: do {
1.287 djm 2368: if (strcasecmp(s, "none") == 0)
2369: break;
1.259 djm 2370: if ((cp = strrchr(sdup, ',')) == NULL)
2371: cp = sdup; /* last */
2372: else
2373: *cp++ = '\0';
2374:
1.258 naddy 2375: if (first) {
1.257 djm 2376: /* First argument and configuration is active */
1.280 millert 2377: if (parse_ssh_uri(cp, &user, &host, &port) == -1 ||
2378: parse_user_host_port(cp, &user, &host, &port) != 0)
1.257 djm 2379: goto out;
2380: } else {
2381: /* Subsequent argument or inactive configuration */
1.280 millert 2382: if (parse_ssh_uri(cp, NULL, NULL, NULL) == -1 ||
2383: parse_user_host_port(cp, NULL, NULL, NULL) != 0)
1.257 djm 2384: goto out;
2385: }
1.258 naddy 2386: first = 0; /* only check syntax for subsequent hosts */
1.259 djm 2387: } while (cp != sdup);
1.257 djm 2388: /* success */
1.258 naddy 2389: if (active) {
1.287 djm 2390: if (strcasecmp(s, "none") == 0) {
2391: o->jump_host = xstrdup("none");
2392: o->jump_port = 0;
2393: } else {
2394: o->jump_user = user;
2395: o->jump_host = host;
2396: o->jump_port = port;
2397: o->proxy_command = xstrdup("none");
2398: user = host = NULL;
2399: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2400: o->jump_extra = xstrdup(s);
2401: o->jump_extra[cp - s] = '\0';
2402: }
1.259 djm 2403: }
1.258 naddy 2404: }
1.257 djm 2405: ret = 0;
2406: out:
1.258 naddy 2407: free(orig);
1.257 djm 2408: free(user);
2409: free(host);
2410: return ret;
1.280 millert 2411: }
2412:
2413: int
2414: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2415: {
2416: char *path;
2417: int r;
2418:
2419: r = parse_uri("ssh", uri, userp, hostp, portp, &path);
2420: if (r == 0 && path != NULL)
2421: r = -1; /* path not allowed */
2422: return r;
1.257 djm 2423: }
2424:
1.221 djm 2425: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2426: static const char *
2427: fmt_multistate_int(int val, const struct multistate *m)
2428: {
2429: u_int i;
2430:
2431: for (i = 0; m[i].key != NULL; i++) {
2432: if (m[i].value == val)
2433: return m[i].key;
2434: }
2435: return "UNKNOWN";
2436: }
2437:
2438: static const char *
2439: fmt_intarg(OpCodes code, int val)
2440: {
2441: if (val == -1)
2442: return "unset";
2443: switch (code) {
2444: case oAddressFamily:
2445: return fmt_multistate_int(val, multistate_addressfamily);
2446: case oVerifyHostKeyDNS:
1.232 djm 2447: case oUpdateHostkeys:
1.221 djm 2448: return fmt_multistate_int(val, multistate_yesnoask);
1.278 djm 2449: case oStrictHostKeyChecking:
2450: return fmt_multistate_int(val, multistate_strict_hostkey);
1.221 djm 2451: case oControlMaster:
2452: return fmt_multistate_int(val, multistate_controlmaster);
2453: case oTunnel:
2454: return fmt_multistate_int(val, multistate_tunnel);
2455: case oRequestTTY:
2456: return fmt_multistate_int(val, multistate_requesttty);
2457: case oCanonicalizeHostname:
2458: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.285 djm 2459: case oAddKeysToAgent:
2460: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.224 djm 2461: case oFingerprintHash:
2462: return ssh_digest_alg_name(val);
1.221 djm 2463: default:
2464: switch (val) {
2465: case 0:
2466: return "no";
2467: case 1:
2468: return "yes";
2469: default:
2470: return "UNKNOWN";
2471: }
2472: }
2473: }
2474:
2475: static const char *
2476: lookup_opcode_name(OpCodes code)
2477: {
2478: u_int i;
2479:
2480: for (i = 0; keywords[i].name != NULL; i++)
2481: if (keywords[i].opcode == code)
2482: return(keywords[i].name);
2483: return "UNKNOWN";
2484: }
2485:
2486: static void
2487: dump_cfg_int(OpCodes code, int val)
2488: {
2489: printf("%s %d\n", lookup_opcode_name(code), val);
2490: }
2491:
2492: static void
2493: dump_cfg_fmtint(OpCodes code, int val)
2494: {
2495: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2496: }
2497:
2498: static void
2499: dump_cfg_string(OpCodes code, const char *val)
2500: {
2501: if (val == NULL)
2502: return;
2503: printf("%s %s\n", lookup_opcode_name(code), val);
2504: }
2505:
2506: static void
2507: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2508: {
2509: u_int i;
2510:
2511: for (i = 0; i < count; i++)
2512: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2513: }
2514:
2515: static void
2516: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2517: {
2518: u_int i;
2519:
2520: printf("%s", lookup_opcode_name(code));
2521: for (i = 0; i < count; i++)
2522: printf(" %s", vals[i]);
2523: printf("\n");
2524: }
2525:
2526: static void
2527: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2528: {
2529: const struct Forward *fwd;
2530: u_int i;
2531:
2532: /* oDynamicForward */
2533: for (i = 0; i < count; i++) {
2534: fwd = &fwds[i];
1.265 djm 2535: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.221 djm 2536: strcmp(fwd->connect_host, "socks") != 0)
2537: continue;
1.265 djm 2538: if (code == oLocalForward && fwd->connect_host != NULL &&
1.221 djm 2539: strcmp(fwd->connect_host, "socks") == 0)
2540: continue;
2541: printf("%s", lookup_opcode_name(code));
2542: if (fwd->listen_port == PORT_STREAMLOCAL)
2543: printf(" %s", fwd->listen_path);
2544: else if (fwd->listen_host == NULL)
2545: printf(" %d", fwd->listen_port);
2546: else {
2547: printf(" [%s]:%d",
2548: fwd->listen_host, fwd->listen_port);
2549: }
2550: if (code != oDynamicForward) {
2551: if (fwd->connect_port == PORT_STREAMLOCAL)
2552: printf(" %s", fwd->connect_path);
2553: else if (fwd->connect_host == NULL)
2554: printf(" %d", fwd->connect_port);
2555: else {
2556: printf(" [%s]:%d",
2557: fwd->connect_host, fwd->connect_port);
2558: }
2559: }
2560: printf("\n");
2561: }
2562: }
2563:
2564: void
2565: dump_client_config(Options *o, const char *host)
2566: {
2567: int i;
1.292 djm 2568: char buf[8], *all_key;
1.221 djm 2569:
1.240 djm 2570: /* This is normally prepared in ssh_kex2 */
1.292 djm 2571: all_key = sshkey_alg_list(0, 0, 1, ',');
2572: if (kex_assemble_names( &o->hostkeyalgorithms,
2573: KEX_DEFAULT_PK_ALG, all_key) != 0)
1.240 djm 2574: fatal("%s: kex_assemble_names failed", __func__);
1.292 djm 2575: free(all_key);
1.240 djm 2576:
1.221 djm 2577: /* Most interesting options first: user, host, port */
2578: dump_cfg_string(oUser, o->user);
2579: dump_cfg_string(oHostName, host);
2580: dump_cfg_int(oPort, o->port);
2581:
2582: /* Flag options */
1.285 djm 2583: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
1.221 djm 2584: dump_cfg_fmtint(oAddressFamily, o->address_family);
2585: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2586: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2587: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2588: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2589: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2590: dump_cfg_fmtint(oCompression, o->compression);
2591: dump_cfg_fmtint(oControlMaster, o->control_master);
2592: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.256 dtucker 2593: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.221 djm 2594: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2595: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2596: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2597: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2598: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2599: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2600: #ifdef GSSAPI
2601: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2602: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2603: #endif /* GSSAPI */
2604: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2605: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2606: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2607: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2608: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2609: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2610: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2611: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2612: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2613: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2614: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2615: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2616: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2617: dump_cfg_fmtint(oTunnel, o->tun_open);
2618: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2619: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2620: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2621:
2622: /* Integer options */
2623: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2624: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2625: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2626: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2627: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2628: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2629:
2630: /* String options */
2631: dump_cfg_string(oBindAddress, o->bind_address);
1.282 djm 2632: dump_cfg_string(oBindInterface, o->bind_interface);
1.221 djm 2633: dump_cfg_string(oCiphers, o->ciphers ? o->ciphers : KEX_CLIENT_ENCRYPT);
2634: dump_cfg_string(oControlPath, o->control_path);
1.240 djm 2635: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.221 djm 2636: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2637: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.253 markus 2638: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.285 djm 2639: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.221 djm 2640: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
2641: dump_cfg_string(oKexAlgorithms, o->kex_algorithms ? o->kex_algorithms : KEX_CLIENT_KEX);
1.298 djm 2642: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms ? o->ca_sign_algorithms : SSH_ALLOWED_CA_SIGALGS);
1.221 djm 2643: dump_cfg_string(oLocalCommand, o->local_command);
1.277 bluhm 2644: dump_cfg_string(oRemoteCommand, o->remote_command);
1.221 djm 2645: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
2646: dump_cfg_string(oMacs, o->macs ? o->macs : KEX_CLIENT_MAC);
1.266 djm 2647: #ifdef ENABLE_PKCS11
1.221 djm 2648: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.266 djm 2649: #endif
1.221 djm 2650: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.242 djm 2651: dump_cfg_string(oPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.230 djm 2652: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2653: dump_cfg_string(oXAuthLocation, o->xauth_location);
2654:
1.230 djm 2655: /* Forwards */
1.221 djm 2656: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2657: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2658: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2659:
2660: /* String array options */
2661: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2662: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.285 djm 2663: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.221 djm 2664: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2665: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2666: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.290 djm 2667: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.221 djm 2668:
2669: /* Special cases */
2670:
2671: /* oConnectTimeout */
2672: if (o->connection_timeout == -1)
2673: printf("connecttimeout none\n");
2674: else
2675: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2676:
2677: /* oTunnelDevice */
2678: printf("tunneldevice");
2679: if (o->tun_local == SSH_TUNID_ANY)
2680: printf(" any");
2681: else
2682: printf(" %d", o->tun_local);
2683: if (o->tun_remote == SSH_TUNID_ANY)
2684: printf(":any");
2685: else
2686: printf(":%d", o->tun_remote);
2687: printf("\n");
2688:
2689: /* oCanonicalizePermittedCNAMEs */
2690: if ( o->num_permitted_cnames > 0) {
2691: printf("canonicalizePermittedcnames");
2692: for (i = 0; i < o->num_permitted_cnames; i++) {
2693: printf(" %s:%s", o->permitted_cnames[i].source_list,
2694: o->permitted_cnames[i].target_list);
2695: }
2696: printf("\n");
2697: }
2698:
2699: /* oControlPersist */
2700: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2701: dump_cfg_fmtint(oControlPersist, o->control_persist);
2702: else
2703: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2704:
2705: /* oEscapeChar */
2706: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2707: printf("escapechar none\n");
2708: else {
1.257 djm 2709: vis(buf, o->escape_char, VIS_WHITE, 0);
2710: printf("escapechar %s\n", buf);
1.221 djm 2711: }
2712:
2713: /* oIPQoS */
2714: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2715: printf("%s\n", iptos2str(o->ip_qos_bulk));
2716:
2717: /* oRekeyLimit */
1.249 dtucker 2718: printf("rekeylimit %llu %d\n",
2719: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.221 djm 2720:
2721: /* oStreamLocalBindMask */
2722: printf("streamlocalbindmask 0%o\n",
2723: o->fwd_opts.streamlocal_bind_mask);
1.285 djm 2724:
2725: /* oLogFacility */
2726: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
1.257 djm 2727:
2728: /* oProxyCommand / oProxyJump */
2729: if (o->jump_host == NULL)
2730: dump_cfg_string(oProxyCommand, o->proxy_command);
2731: else {
2732: /* Check for numeric addresses */
2733: i = strchr(o->jump_host, ':') != NULL ||
2734: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
2735: snprintf(buf, sizeof(buf), "%d", o->jump_port);
2736: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
1.259 djm 2737: /* optional additional jump spec */
2738: o->jump_extra == NULL ? "" : o->jump_extra,
2739: o->jump_extra == NULL ? "" : ",",
1.257 djm 2740: /* optional user */
2741: o->jump_user == NULL ? "" : o->jump_user,
2742: o->jump_user == NULL ? "" : "@",
2743: /* opening [ if hostname is numeric */
2744: i ? "[" : "",
2745: /* mandatory hostname */
2746: o->jump_host,
2747: /* closing ] if hostname is numeric */
2748: i ? "]" : "",
2749: /* optional port number */
2750: o->jump_port <= 0 ? "" : ":",
1.259 djm 2751: o->jump_port <= 0 ? "" : buf);
1.257 djm 2752: }
1.1 deraadt 2753: }
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