Annotation of src/usr.bin/ssh/readconf.c, Revision 1.237
1.237 ! djm 1: /* $OpenBSD: readconf.c,v 1.236 2015/05/22 04:45:52 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>
1.155 stevesk 27: #include <netdb.h>
1.206 djm 28: #include <paths.h>
29: #include <pwd.h>
1.159 deraadt 30: #include <signal.h>
1.158 stevesk 31: #include <stdio.h>
1.157 stevesk 32: #include <string.h>
1.156 stevesk 33: #include <unistd.h>
1.228 deraadt 34: #include <limits.h>
1.200 dtucker 35: #include <util.h>
1.221 djm 36: #include <vis.h>
1.1 deraadt 37:
1.159 deraadt 38: #include "xmalloc.h"
1.1 deraadt 39: #include "ssh.h"
1.25 markus 40: #include "compat.h"
1.58 markus 41: #include "cipher.h"
1.55 markus 42: #include "pathnames.h"
1.58 markus 43: #include "log.h"
1.227 djm 44: #include "sshkey.h"
1.220 millert 45: #include "misc.h"
1.58 markus 46: #include "readconf.h"
47: #include "match.h"
1.62 markus 48: #include "kex.h"
49: #include "mac.h"
1.206 djm 50: #include "uidswap.h"
1.221 djm 51: #include "myproposal.h"
1.224 djm 52: #include "digest.h"
1.1 deraadt 53:
54: /* Format of the configuration file:
55:
56: # Configuration data is parsed as follows:
57: # 1. command line options
58: # 2. user-specific file
59: # 3. system-wide file
60: # Any configuration value is only changed the first time it is set.
61: # Thus, host-specific definitions should be at the beginning of the
62: # configuration file, and defaults at the end.
63:
64: # Host-specific declarations. These may override anything above. A single
65: # host may match multiple declarations; these are processed in the order
66: # that they are given in.
67:
68: Host *.ngs.fi ngs.fi
1.96 markus 69: User foo
1.1 deraadt 70:
71: Host fake.com
72: HostName another.host.name.real.org
73: User blaah
74: Port 34289
75: ForwardX11 no
76: ForwardAgent no
77:
78: Host books.com
79: RemoteForward 9999 shadows.cs.hut.fi:9999
80: Cipher 3des
81:
82: Host fascist.blob.com
83: Port 23123
84: User tylonen
85: PasswordAuthentication no
86:
87: Host puukko.hut.fi
88: User t35124p
89: ProxyCommand ssh-proxy %h %p
90:
91: Host *.fr
1.96 markus 92: PublicKeyAuthentication no
1.1 deraadt 93:
94: Host *.su
95: Cipher none
96: PasswordAuthentication no
97:
1.144 reyk 98: Host vpn.fake.com
99: Tunnel yes
100: TunnelDevice 3
101:
1.1 deraadt 102: # Defaults for various options
103: Host *
104: ForwardAgent no
1.50 markus 105: ForwardX11 no
1.1 deraadt 106: PasswordAuthentication yes
107: RSAAuthentication yes
108: RhostsRSAAuthentication yes
109: StrictHostKeyChecking yes
1.126 markus 110: TcpKeepAlive no
1.1 deraadt 111: IdentityFile ~/.ssh/identity
112: Port 22
113: EscapeChar ~
114:
115: */
116:
117: /* Keyword tokens. */
118:
1.17 markus 119: typedef enum {
120: oBadOption,
1.206 djm 121: oHost, oMatch,
1.186 djm 122: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
123: oGatewayPorts, oExitOnForwardFailure,
1.100 deraadt 124: oPasswordAuthentication, oRSAAuthentication,
1.59 markus 125: oChallengeResponseAuthentication, oXAuthLocation,
1.17 markus 126: oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
1.206 djm 127: oUser, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
1.17 markus 128: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
129: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.126 markus 130: oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts,
1.62 markus 131: oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs,
1.221 djm 132: oPubkeyAuthentication,
1.67 markus 133: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 134: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.183 markus 135: oHostKeyAlgorithms, oBindAddress, oPKCS11Provider,
1.96 markus 136: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 137: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 138: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 139: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.187 djm 140: oSendEnv, oControlPath, oControlMaster, oControlPersist,
141: oHashKnownHosts,
1.144 reyk 142: oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
1.216 djm 143: oVisualHostKey, oUseRoaming,
1.205 djm 144: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 145: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
146: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.223 djm 147: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
1.230 djm 148: oFingerprintHash, oUpdateHostkeys, oHostbasedKeyTypes,
1.199 djm 149: oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 150: } OpCodes;
151:
152: /* Textual representations of the tokens. */
153:
1.17 markus 154: static struct {
155: const char *name;
156: OpCodes opcode;
157: } keywords[] = {
158: { "forwardagent", oForwardAgent },
159: { "forwardx11", oForwardX11 },
1.123 markus 160: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 161: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 162: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 163: { "xauthlocation", oXAuthLocation },
1.17 markus 164: { "gatewayports", oGatewayPorts },
165: { "useprivilegedport", oUsePrivilegedPort },
1.116 markus 166: { "rhostsauthentication", oDeprecated },
1.17 markus 167: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 168: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
169: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.17 markus 170: { "rsaauthentication", oRSAAuthentication },
1.50 markus 171: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 172: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.72 markus 173: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
1.73 markus 174: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 175: { "challengeresponseauthentication", oChallengeResponseAuthentication },
176: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
177: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.110 jakob 178: { "kerberosauthentication", oUnsupported },
179: { "kerberostgtpassing", oUnsupported },
180: { "afstokenpassing", oUnsupported },
1.118 markus 181: #if defined(GSSAPI)
182: { "gssapiauthentication", oGssAuthentication },
183: { "gssapidelegatecredentials", oGssDelegateCreds },
184: #else
185: { "gssapiauthentication", oUnsupported },
186: { "gssapidelegatecredentials", oUnsupported },
187: #endif
1.96 markus 188: { "fallbacktorsh", oDeprecated },
189: { "usersh", oDeprecated },
1.17 markus 190: { "identityfile", oIdentityFile },
1.174 stevesk 191: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 192: { "identitiesonly", oIdentitiesOnly },
1.17 markus 193: { "hostname", oHostName },
1.52 markus 194: { "hostkeyalias", oHostKeyAlias },
1.17 markus 195: { "proxycommand", oProxyCommand },
196: { "port", oPort },
197: { "cipher", oCipher },
1.25 markus 198: { "ciphers", oCiphers },
1.62 markus 199: { "macs", oMacs },
1.25 markus 200: { "protocol", oProtocol },
1.17 markus 201: { "remoteforward", oRemoteForward },
202: { "localforward", oLocalForward },
203: { "user", oUser },
204: { "host", oHost },
1.206 djm 205: { "match", oMatch },
1.17 markus 206: { "escapechar", oEscapeChar },
207: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.193 djm 208: { "globalknownhostsfile2", oDeprecated },
1.174 stevesk 209: { "userknownhostsfile", oUserKnownHostsFile },
1.221 djm 210: { "userknownhostsfile2", oDeprecated },
1.17 markus 211: { "connectionattempts", oConnectionAttempts },
212: { "batchmode", oBatchMode },
213: { "checkhostip", oCheckHostIP },
214: { "stricthostkeychecking", oStrictHostKeyChecking },
215: { "compression", oCompression },
216: { "compressionlevel", oCompressionLevel },
1.126 markus 217: { "tcpkeepalive", oTCPKeepAlive },
218: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 219: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
220: { "loglevel", oLogLevel },
1.71 markus 221: { "dynamicforward", oDynamicForward },
1.67 markus 222: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 223: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.77 markus 224: { "bindaddress", oBindAddress },
1.183 markus 225: #ifdef ENABLE_PKCS11
226: { "smartcarddevice", oPKCS11Provider },
227: { "pkcs11provider", oPKCS11Provider },
1.110 jakob 228: #else
229: { "smartcarddevice", oUnsupported },
1.183 markus 230: { "pkcs11provider", oUnsupported },
1.110 jakob 231: #endif
1.93 deraadt 232: { "clearallforwardings", oClearAllForwardings },
1.101 markus 233: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 234: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 235: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 236: { "rekeylimit", oRekeyLimit },
1.111 djm 237: { "connecttimeout", oConnectTimeout },
1.112 djm 238: { "addressfamily", oAddressFamily },
1.127 markus 239: { "serveraliveinterval", oServerAliveInterval },
240: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 241: { "sendenv", oSendEnv },
1.132 djm 242: { "controlpath", oControlPath },
243: { "controlmaster", oControlMaster },
1.187 djm 244: { "controlpersist", oControlPersist },
1.136 djm 245: { "hashknownhosts", oHashKnownHosts },
1.144 reyk 246: { "tunnel", oTunnel },
247: { "tunneldevice", oTunnelDevice },
248: { "localcommand", oLocalCommand },
249: { "permitlocalcommand", oPermitLocalCommand },
1.167 grunk 250: { "visualhostkey", oVisualHostKey },
1.177 andreas 251: { "useroaming", oUseRoaming },
1.189 djm 252: { "kexalgorithms", oKexAlgorithms },
1.190 djm 253: { "ipqos", oIPQoS },
1.192 djm 254: { "requesttty", oRequestTTY },
1.205 djm 255: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 256: { "canonicaldomains", oCanonicalDomains },
1.209 djm 257: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
258: { "canonicalizehostname", oCanonicalizeHostname },
259: { "canonicalizemaxdots", oCanonicalizeMaxDots },
260: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 261: { "streamlocalbindmask", oStreamLocalBindMask },
262: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 263: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 264: { "fingerprinthash", oFingerprintHash },
1.229 djm 265: { "updatehostkeys", oUpdateHostkeys },
1.230 djm 266: { "hostbasedkeytypes", oHostbasedKeyTypes },
1.199 djm 267: { "ignoreunknown", oIgnoreUnknown },
1.171 djm 268:
1.92 stevesk 269: { NULL, oBadOption }
1.13 markus 270: };
271:
1.19 markus 272: /*
273: * Adds a local TCP/IP port forward to options. Never returns if there is an
274: * error.
275: */
1.1 deraadt 276:
1.26 markus 277: void
1.220 millert 278: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 279: {
1.220 millert 280: struct Forward *fwd;
1.17 markus 281: extern uid_t original_real_uid;
1.185 djm 282:
1.220 millert 283: if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0 &&
284: newfwd->listen_path == NULL)
1.64 millert 285: fatal("Privileged ports can only be forwarded by root.");
1.234 deraadt 286: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 287: options->num_local_forwards + 1,
288: sizeof(*options->local_forwards));
1.17 markus 289: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 290:
1.172 stevesk 291: fwd->listen_host = newfwd->listen_host;
1.135 djm 292: fwd->listen_port = newfwd->listen_port;
1.220 millert 293: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 294: fwd->connect_host = newfwd->connect_host;
1.135 djm 295: fwd->connect_port = newfwd->connect_port;
1.220 millert 296: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 297: }
298:
1.19 markus 299: /*
300: * Adds a remote TCP/IP port forward to options. Never returns if there is
301: * an error.
302: */
1.1 deraadt 303:
1.26 markus 304: void
1.220 millert 305: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 306: {
1.220 millert 307: struct Forward *fwd;
1.185 djm 308:
1.234 deraadt 309: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 310: options->num_remote_forwards + 1,
311: sizeof(*options->remote_forwards));
1.17 markus 312: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 313:
1.172 stevesk 314: fwd->listen_host = newfwd->listen_host;
1.135 djm 315: fwd->listen_port = newfwd->listen_port;
1.220 millert 316: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 317: fwd->connect_host = newfwd->connect_host;
1.135 djm 318: fwd->connect_port = newfwd->connect_port;
1.220 millert 319: fwd->connect_path = newfwd->connect_path;
1.194 markus 320: fwd->handle = newfwd->handle;
1.184 markus 321: fwd->allocated_port = 0;
1.1 deraadt 322: }
323:
1.90 stevesk 324: static void
325: clear_forwardings(Options *options)
326: {
327: int i;
328:
1.135 djm 329: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 330: free(options->local_forwards[i].listen_host);
1.220 millert 331: free(options->local_forwards[i].listen_path);
1.202 djm 332: free(options->local_forwards[i].connect_host);
1.220 millert 333: free(options->local_forwards[i].connect_path);
1.135 djm 334: }
1.185 djm 335: if (options->num_local_forwards > 0) {
1.202 djm 336: free(options->local_forwards);
1.185 djm 337: options->local_forwards = NULL;
338: }
1.90 stevesk 339: options->num_local_forwards = 0;
1.135 djm 340: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 341: free(options->remote_forwards[i].listen_host);
1.220 millert 342: free(options->remote_forwards[i].listen_path);
1.202 djm 343: free(options->remote_forwards[i].connect_host);
1.220 millert 344: free(options->remote_forwards[i].connect_path);
1.135 djm 345: }
1.185 djm 346: if (options->num_remote_forwards > 0) {
1.202 djm 347: free(options->remote_forwards);
1.185 djm 348: options->remote_forwards = NULL;
349: }
1.90 stevesk 350: options->num_remote_forwards = 0;
1.145 reyk 351: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 352: }
353:
1.195 dtucker 354: void
355: add_identity_file(Options *options, const char *dir, const char *filename,
356: int userprovided)
357: {
358: char *path;
1.219 djm 359: int i;
1.195 dtucker 360:
361: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
362: fatal("Too many identity files specified (max %d)",
363: SSH_MAX_IDENTITY_FILES);
364:
365: if (dir == NULL) /* no dir, filename is absolute */
366: path = xstrdup(filename);
367: else
368: (void)xasprintf(&path, "%.100s%.100s", dir, filename);
1.219 djm 369:
370: /* Avoid registering duplicates */
371: for (i = 0; i < options->num_identity_files; i++) {
372: if (options->identity_file_userprovided[i] == userprovided &&
373: strcmp(options->identity_files[i], path) == 0) {
374: debug2("%s: ignoring duplicate key %s", __func__, path);
375: free(path);
376: return;
377: }
378: }
1.195 dtucker 379:
380: options->identity_file_userprovided[options->num_identity_files] =
381: userprovided;
382: options->identity_files[options->num_identity_files++] = path;
383: }
384:
1.206 djm 385: int
386: default_ssh_port(void)
387: {
388: static int port;
389: struct servent *sp;
390:
391: if (port == 0) {
392: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
393: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
394: }
395: return port;
396: }
397:
398: /*
399: * Execute a command in a shell.
400: * Return its exit status or -1 on abnormal exit.
401: */
402: static int
403: execute_in_shell(const char *cmd)
404: {
405: char *shell, *command_string;
406: pid_t pid;
407: int devnull, status;
408: extern uid_t original_real_uid;
409:
410: if ((shell = getenv("SHELL")) == NULL)
411: shell = _PATH_BSHELL;
412:
413: /*
414: * Use "exec" to avoid "sh -c" processes on some platforms
415: * (e.g. Solaris)
416: */
417: xasprintf(&command_string, "exec %s", cmd);
418:
419: /* Need this to redirect subprocess stdin/out */
420: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
421: fatal("open(/dev/null): %s", strerror(errno));
422:
423: debug("Executing command: '%.500s'", cmd);
424:
425: /* Fork and execute the command. */
426: if ((pid = fork()) == 0) {
427: char *argv[4];
428:
429: /* Child. Permanently give up superuser privileges. */
430: permanently_drop_suid(original_real_uid);
431:
432: /* Redirect child stdin and stdout. Leave stderr */
433: if (dup2(devnull, STDIN_FILENO) == -1)
434: fatal("dup2: %s", strerror(errno));
435: if (dup2(devnull, STDOUT_FILENO) == -1)
436: fatal("dup2: %s", strerror(errno));
437: if (devnull > STDERR_FILENO)
438: close(devnull);
439: closefrom(STDERR_FILENO + 1);
440:
441: argv[0] = shell;
442: argv[1] = "-c";
443: argv[2] = command_string;
444: argv[3] = NULL;
445:
446: execv(argv[0], argv);
447: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
448: /* Die with signal to make this error apparent to parent. */
449: signal(SIGTERM, SIG_DFL);
450: kill(getpid(), SIGTERM);
451: _exit(1);
452: }
453: /* Parent. */
454: if (pid < 0)
455: fatal("%s: fork: %.100s", __func__, strerror(errno));
456:
457: close(devnull);
458: free(command_string);
459:
460: while (waitpid(pid, &status, 0) == -1) {
461: if (errno != EINTR && errno != EAGAIN)
462: fatal("%s: waitpid: %s", __func__, strerror(errno));
463: }
464: if (!WIFEXITED(status)) {
465: error("command '%.100s' exited abnormally", cmd);
466: return -1;
1.221 djm 467: }
1.206 djm 468: debug3("command returned status %d", WEXITSTATUS(status));
469: return WEXITSTATUS(status);
470: }
471:
472: /*
473: * Parse and execute a Match directive.
474: */
475: static int
476: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.221 djm 477: const char *host_arg, const char *original_host, int post_canon,
478: const char *filename, int linenum)
1.206 djm 479: {
1.221 djm 480: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 481: const char *ruser;
1.221 djm 482: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 483: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
484:
485: /*
486: * Configuration is likely to be incomplete at this point so we
487: * must be prepared to use default values.
488: */
489: port = options->port <= 0 ? default_ssh_port() : options->port;
490: ruser = options->user == NULL ? pw->pw_name : options->user;
1.211 djm 491: if (options->hostname != NULL) {
1.212 djm 492: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 493: host = percent_expand(options->hostname,
494: "h", host_arg, (char *)NULL);
495: } else
496: host = xstrdup(host_arg);
1.206 djm 497:
1.221 djm 498: debug2("checking match for '%s' host %s originally %s",
499: cp, host, original_host);
500: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
501: criteria = NULL;
502: this_result = 1;
503: if ((negate = attrib[0] == '!'))
504: attrib++;
505: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 506: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 507: if (attributes > 1 ||
1.213 dtucker 508: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 509: error("%.200s line %d: '%s' cannot be combined "
510: "with other Match attributes",
511: filename, linenum, oattrib);
1.213 dtucker 512: result = -1;
513: goto out;
514: }
1.221 djm 515: if (result)
516: result = negate ? 0 : 1;
1.213 dtucker 517: goto out;
518: }
1.221 djm 519: attributes++;
520: if (strcasecmp(attrib, "canonical") == 0) {
521: r = !!post_canon; /* force bitmask member to boolean */
522: if (r == (negate ? 1 : 0))
523: this_result = result = 0;
524: debug3("%.200s line %d: %smatched '%s'",
525: filename, linenum,
526: this_result ? "" : "not ", oattrib);
527: continue;
528: }
529: /* All other criteria require an argument */
1.206 djm 530: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
531: error("Missing Match criteria for %s", attrib);
1.211 djm 532: result = -1;
533: goto out;
1.206 djm 534: }
535: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 536: criteria = xstrdup(host);
1.235 djm 537: r = match_hostname(host, arg) == 1;
1.221 djm 538: if (r == (negate ? 1 : 0))
539: this_result = result = 0;
1.206 djm 540: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 541: criteria = xstrdup(original_host);
1.235 djm 542: r = match_hostname(original_host, arg) == 1;
1.221 djm 543: if (r == (negate ? 1 : 0))
544: this_result = result = 0;
1.206 djm 545: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 546: criteria = xstrdup(ruser);
1.235 djm 547: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 548: if (r == (negate ? 1 : 0))
549: this_result = result = 0;
1.206 djm 550: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 551: criteria = xstrdup(pw->pw_name);
1.235 djm 552: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 553: if (r == (negate ? 1 : 0))
554: this_result = result = 0;
1.210 djm 555: } else if (strcasecmp(attrib, "exec") == 0) {
1.206 djm 556: if (gethostname(thishost, sizeof(thishost)) == -1)
557: fatal("gethostname: %s", strerror(errno));
558: strlcpy(shorthost, thishost, sizeof(shorthost));
559: shorthost[strcspn(thishost, ".")] = '\0';
560: snprintf(portstr, sizeof(portstr), "%d", port);
561:
562: cmd = percent_expand(arg,
563: "L", shorthost,
564: "d", pw->pw_dir,
565: "h", host,
566: "l", thishost,
1.221 djm 567: "n", original_host,
1.206 djm 568: "p", portstr,
569: "r", ruser,
570: "u", pw->pw_name,
571: (char *)NULL);
1.217 djm 572: if (result != 1) {
573: /* skip execution if prior predicate failed */
1.221 djm 574: debug3("%.200s line %d: skipped exec "
575: "\"%.100s\"", filename, linenum, cmd);
576: free(cmd);
577: continue;
578: }
579: r = execute_in_shell(cmd);
580: if (r == -1) {
581: fatal("%.200s line %d: match exec "
582: "'%.100s' error", filename,
583: linenum, cmd);
1.217 djm 584: }
1.221 djm 585: criteria = xstrdup(cmd);
1.206 djm 586: free(cmd);
1.221 djm 587: /* Force exit status to boolean */
588: r = r == 0;
589: if (r == (negate ? 1 : 0))
590: this_result = result = 0;
1.206 djm 591: } else {
592: error("Unsupported Match attribute %s", attrib);
1.211 djm 593: result = -1;
594: goto out;
1.206 djm 595: }
1.221 djm 596: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
597: filename, linenum, this_result ? "": "not ",
598: oattrib, criteria);
599: free(criteria);
1.213 dtucker 600: }
601: if (attributes == 0) {
602: error("One or more attributes required for Match");
603: result = -1;
604: goto out;
1.206 djm 605: }
1.221 djm 606: out:
607: if (result != -1)
608: debug2("match %sfound", result ? "" : "not ");
1.206 djm 609: *condition = cp;
1.211 djm 610: free(host);
1.206 djm 611: return result;
612: }
613:
1.208 djm 614: /* Check and prepare a domain name: removes trailing '.' and lowercases */
615: static void
616: valid_domain(char *name, const char *filename, int linenum)
617: {
618: size_t i, l = strlen(name);
619: u_char c, last = '\0';
620:
621: if (l == 0)
622: fatal("%s line %d: empty hostname suffix", filename, linenum);
623: if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0]))
624: fatal("%s line %d: hostname suffix \"%.100s\" "
625: "starts with invalid character", filename, linenum, name);
626: for (i = 0; i < l; i++) {
627: c = tolower((u_char)name[i]);
628: name[i] = (char)c;
629: if (last == '.' && c == '.')
630: fatal("%s line %d: hostname suffix \"%.100s\" contains "
631: "consecutive separators", filename, linenum, name);
632: if (c != '.' && c != '-' && !isalnum(c) &&
633: c != '_') /* technically invalid, but common */
634: fatal("%s line %d: hostname suffix \"%.100s\" contains "
635: "invalid characters", filename, linenum, name);
636: last = c;
637: }
638: if (name[l - 1] == '.')
639: name[l - 1] = '\0';
640: }
641:
1.19 markus 642: /*
1.70 stevesk 643: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 644: */
1.26 markus 645: static OpCodes
1.199 djm 646: parse_token(const char *cp, const char *filename, int linenum,
647: const char *ignored_unknown)
1.1 deraadt 648: {
1.199 djm 649: int i;
1.1 deraadt 650:
1.17 markus 651: for (i = 0; keywords[i].name; i++)
1.199 djm 652: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 653: return keywords[i].opcode;
1.235 djm 654: if (ignored_unknown != NULL &&
655: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 656: return oIgnoredUnknownOption;
1.75 stevesk 657: error("%s: line %d: Bad configuration option: %s",
658: filename, linenum, cp);
1.17 markus 659: return oBadOption;
1.1 deraadt 660: }
661:
1.207 djm 662: /* Multistate option parsing */
663: struct multistate {
664: char *key;
665: int value;
666: };
667: static const struct multistate multistate_flag[] = {
668: { "true", 1 },
669: { "false", 0 },
670: { "yes", 1 },
671: { "no", 0 },
672: { NULL, -1 }
673: };
674: static const struct multistate multistate_yesnoask[] = {
675: { "true", 1 },
676: { "false", 0 },
677: { "yes", 1 },
678: { "no", 0 },
679: { "ask", 2 },
680: { NULL, -1 }
681: };
682: static const struct multistate multistate_addressfamily[] = {
683: { "inet", AF_INET },
684: { "inet6", AF_INET6 },
685: { "any", AF_UNSPEC },
686: { NULL, -1 }
687: };
688: static const struct multistate multistate_controlmaster[] = {
689: { "true", SSHCTL_MASTER_YES },
690: { "yes", SSHCTL_MASTER_YES },
691: { "false", SSHCTL_MASTER_NO },
692: { "no", SSHCTL_MASTER_NO },
693: { "auto", SSHCTL_MASTER_AUTO },
694: { "ask", SSHCTL_MASTER_ASK },
695: { "autoask", SSHCTL_MASTER_AUTO_ASK },
696: { NULL, -1 }
697: };
698: static const struct multistate multistate_tunnel[] = {
699: { "ethernet", SSH_TUNMODE_ETHERNET },
700: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
701: { "true", SSH_TUNMODE_DEFAULT },
702: { "yes", SSH_TUNMODE_DEFAULT },
703: { "false", SSH_TUNMODE_NO },
704: { "no", SSH_TUNMODE_NO },
705: { NULL, -1 }
706: };
707: static const struct multistate multistate_requesttty[] = {
708: { "true", REQUEST_TTY_YES },
709: { "yes", REQUEST_TTY_YES },
710: { "false", REQUEST_TTY_NO },
711: { "no", REQUEST_TTY_NO },
712: { "force", REQUEST_TTY_FORCE },
713: { "auto", REQUEST_TTY_AUTO },
714: { NULL, -1 }
715: };
1.209 djm 716: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 717: { "true", SSH_CANONICALISE_YES },
718: { "false", SSH_CANONICALISE_NO },
719: { "yes", SSH_CANONICALISE_YES },
720: { "no", SSH_CANONICALISE_NO },
721: { "always", SSH_CANONICALISE_ALWAYS },
722: { NULL, -1 }
723: };
1.207 djm 724:
1.19 markus 725: /*
726: * Processes a single option line as used in the configuration files. This
727: * only sets those values that have not already been set.
728: */
1.102 markus 729: #define WHITESPACE " \t\r\n"
1.14 markus 730: int
1.206 djm 731: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 732: const char *original_host, char *line, const char *filename,
733: int linenum, int *activep, int flags)
1.1 deraadt 734: {
1.193 djm 735: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
736: char **cpptr, fwdarg[256];
1.199 djm 737: u_int i, *uintptr, max_entries = 0;
1.206 djm 738: int negated, opcode, *intptr, value, value2, cmdline = 0;
1.164 dtucker 739: LogLevel *log_level_ptr;
1.201 dtucker 740: long long val64;
1.102 markus 741: size_t len;
1.220 millert 742: struct Forward fwd;
1.207 djm 743: const struct multistate *multistate_ptr;
1.208 djm 744: struct allowed_cname *cname;
1.106 djm 745:
1.206 djm 746: if (activep == NULL) { /* We are processing a command line directive */
747: cmdline = 1;
748: activep = &cmdline;
749: }
750:
1.106 djm 751: /* Strip trailing whitespace */
1.233 djm 752: if ((len = strlen(line)) == 0)
753: return 0;
754: for (len--; len > 0; len--) {
1.106 djm 755: if (strchr(WHITESPACE, line[len]) == NULL)
756: break;
757: line[len] = '\0';
758: }
1.1 deraadt 759:
1.42 provos 760: s = line;
761: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 762: if ((keyword = strdelim(&s)) == NULL)
763: return 0;
1.42 provos 764: /* Ignore leading whitespace. */
765: if (*keyword == '\0')
1.43 markus 766: keyword = strdelim(&s);
1.56 deraadt 767: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 768: return 0;
1.199 djm 769: /* Match lowercase keyword */
1.207 djm 770: lowercase(keyword);
1.17 markus 771:
1.199 djm 772: opcode = parse_token(keyword, filename, linenum,
773: options->ignored_unknown);
1.17 markus 774:
775: switch (opcode) {
776: case oBadOption:
1.19 markus 777: /* don't panic, but count bad options */
778: return -1;
1.17 markus 779: /* NOTREACHED */
1.199 djm 780: case oIgnoredUnknownOption:
781: debug("%s line %d: Ignored unknown option \"%s\"",
782: filename, linenum, keyword);
783: return 0;
1.111 djm 784: case oConnectTimeout:
785: intptr = &options->connection_timeout;
1.127 markus 786: parse_time:
1.111 djm 787: arg = strdelim(&s);
788: if (!arg || *arg == '\0')
789: fatal("%s line %d: missing time value.",
790: filename, linenum);
1.221 djm 791: if (strcmp(arg, "none") == 0)
792: value = -1;
793: else if ((value = convtime(arg)) == -1)
1.111 djm 794: fatal("%s line %d: invalid time value.",
795: filename, linenum);
1.160 dtucker 796: if (*activep && *intptr == -1)
1.111 djm 797: *intptr = value;
798: break;
799:
1.17 markus 800: case oForwardAgent:
801: intptr = &options->forward_agent;
1.207 djm 802: parse_flag:
803: multistate_ptr = multistate_flag;
804: parse_multistate:
1.42 provos 805: arg = strdelim(&s);
1.40 ho 806: if (!arg || *arg == '\0')
1.207 djm 807: fatal("%s line %d: missing argument.",
808: filename, linenum);
809: value = -1;
810: for (i = 0; multistate_ptr[i].key != NULL; i++) {
811: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
812: value = multistate_ptr[i].value;
813: break;
814: }
815: }
816: if (value == -1)
817: fatal("%s line %d: unsupported option \"%s\".",
818: filename, linenum, arg);
1.17 markus 819: if (*activep && *intptr == -1)
820: *intptr = value;
821: break;
822:
823: case oForwardX11:
824: intptr = &options->forward_x11;
825: goto parse_flag;
826:
1.123 markus 827: case oForwardX11Trusted:
828: intptr = &options->forward_x11_trusted;
829: goto parse_flag;
1.221 djm 830:
1.186 djm 831: case oForwardX11Timeout:
832: intptr = &options->forward_x11_timeout;
833: goto parse_time;
1.123 markus 834:
1.17 markus 835: case oGatewayPorts:
1.220 millert 836: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 837: goto parse_flag;
838:
1.153 markus 839: case oExitOnForwardFailure:
840: intptr = &options->exit_on_forward_failure;
841: goto parse_flag;
842:
1.17 markus 843: case oUsePrivilegedPort:
844: intptr = &options->use_privileged_port;
845: goto parse_flag;
846:
847: case oPasswordAuthentication:
848: intptr = &options->password_authentication;
849: goto parse_flag;
850:
1.48 markus 851: case oKbdInteractiveAuthentication:
852: intptr = &options->kbd_interactive_authentication;
853: goto parse_flag;
854:
855: case oKbdInteractiveDevices:
856: charptr = &options->kbd_interactive_devices;
857: goto parse_string;
858:
1.50 markus 859: case oPubkeyAuthentication:
860: intptr = &options->pubkey_authentication;
1.30 markus 861: goto parse_flag;
862:
1.17 markus 863: case oRSAAuthentication:
864: intptr = &options->rsa_authentication;
865: goto parse_flag;
866:
867: case oRhostsRSAAuthentication:
868: intptr = &options->rhosts_rsa_authentication;
869: goto parse_flag;
870:
1.72 markus 871: case oHostbasedAuthentication:
872: intptr = &options->hostbased_authentication;
873: goto parse_flag;
874:
1.59 markus 875: case oChallengeResponseAuthentication:
1.78 markus 876: intptr = &options->challenge_response_authentication;
1.17 markus 877: goto parse_flag;
1.108 jakob 878:
1.118 markus 879: case oGssAuthentication:
880: intptr = &options->gss_authentication;
881: goto parse_flag;
882:
883: case oGssDelegateCreds:
884: intptr = &options->gss_deleg_creds;
885: goto parse_flag;
886:
1.17 markus 887: case oBatchMode:
888: intptr = &options->batch_mode;
889: goto parse_flag;
890:
891: case oCheckHostIP:
892: intptr = &options->check_host_ip;
1.167 grunk 893: goto parse_flag;
1.17 markus 894:
1.107 jakob 895: case oVerifyHostKeyDNS:
896: intptr = &options->verify_host_key_dns;
1.207 djm 897: multistate_ptr = multistate_yesnoask;
898: goto parse_multistate;
1.107 jakob 899:
1.17 markus 900: case oStrictHostKeyChecking:
901: intptr = &options->strict_host_key_checking;
1.207 djm 902: multistate_ptr = multistate_yesnoask;
903: goto parse_multistate;
1.17 markus 904:
905: case oCompression:
906: intptr = &options->compression;
907: goto parse_flag;
908:
1.126 markus 909: case oTCPKeepAlive:
910: intptr = &options->tcp_keep_alive;
1.17 markus 911: goto parse_flag;
912:
1.91 markus 913: case oNoHostAuthenticationForLocalhost:
914: intptr = &options->no_host_authentication_for_localhost;
915: goto parse_flag;
916:
1.17 markus 917: case oNumberOfPasswordPrompts:
918: intptr = &options->number_of_password_prompts;
919: goto parse_int;
920:
921: case oCompressionLevel:
922: intptr = &options->compression_level;
923: goto parse_int;
924:
1.105 markus 925: case oRekeyLimit:
926: arg = strdelim(&s);
927: if (!arg || *arg == '\0')
1.198 dtucker 928: fatal("%.200s line %d: Missing argument.", filename,
929: linenum);
930: if (strcmp(arg, "default") == 0) {
931: val64 = 0;
932: } else {
1.200 dtucker 933: if (scan_scaled(arg, &val64) == -1)
934: fatal("%.200s line %d: Bad number '%s': %s",
935: filename, linenum, arg, strerror(errno));
936: /* check for too-large or too-small limits */
937: if (val64 > UINT_MAX)
1.198 dtucker 938: fatal("%.200s line %d: RekeyLimit too large",
939: filename, linenum);
940: if (val64 != 0 && val64 < 16)
941: fatal("%.200s line %d: RekeyLimit too small",
942: filename, linenum);
1.105 markus 943: }
1.165 djm 944: if (*activep && options->rekey_limit == -1)
945: options->rekey_limit = (u_int32_t)val64;
1.198 dtucker 946: if (s != NULL) { /* optional rekey interval present */
947: if (strcmp(s, "none") == 0) {
948: (void)strdelim(&s); /* discard */
949: break;
950: }
951: intptr = &options->rekey_interval;
952: goto parse_time;
953: }
1.105 markus 954: break;
955:
1.17 markus 956: case oIdentityFile:
1.42 provos 957: arg = strdelim(&s);
1.40 ho 958: if (!arg || *arg == '\0')
1.17 markus 959: fatal("%.200s line %d: Missing argument.", filename, linenum);
960: if (*activep) {
1.50 markus 961: intptr = &options->num_identity_files;
1.27 markus 962: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 963: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 964: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 965: add_identity_file(options, NULL,
966: arg, flags & SSHCONF_USERCONF);
1.17 markus 967: }
968: break;
969:
1.34 markus 970: case oXAuthLocation:
971: charptr=&options->xauth_location;
972: goto parse_string;
973:
1.17 markus 974: case oUser:
975: charptr = &options->user;
976: parse_string:
1.42 provos 977: arg = strdelim(&s);
1.40 ho 978: if (!arg || *arg == '\0')
1.193 djm 979: fatal("%.200s line %d: Missing argument.",
980: filename, linenum);
1.17 markus 981: if (*activep && *charptr == NULL)
1.38 provos 982: *charptr = xstrdup(arg);
1.17 markus 983: break;
984:
985: case oGlobalKnownHostsFile:
1.193 djm 986: cpptr = (char **)&options->system_hostfiles;
987: uintptr = &options->num_system_hostfiles;
988: max_entries = SSH_MAX_HOSTS_FILES;
989: parse_char_array:
990: if (*activep && *uintptr == 0) {
991: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
992: if ((*uintptr) >= max_entries)
993: fatal("%s line %d: "
994: "too many authorized keys files.",
995: filename, linenum);
996: cpptr[(*uintptr)++] = xstrdup(arg);
997: }
998: }
999: return 0;
1.17 markus 1000:
1001: case oUserKnownHostsFile:
1.193 djm 1002: cpptr = (char **)&options->user_hostfiles;
1003: uintptr = &options->num_user_hostfiles;
1004: max_entries = SSH_MAX_HOSTS_FILES;
1005: goto parse_char_array;
1.27 markus 1006:
1.17 markus 1007: case oHostName:
1008: charptr = &options->hostname;
1009: goto parse_string;
1010:
1.52 markus 1011: case oHostKeyAlias:
1012: charptr = &options->host_key_alias;
1013: goto parse_string;
1014:
1.67 markus 1015: case oPreferredAuthentications:
1016: charptr = &options->preferred_authentications;
1017: goto parse_string;
1018:
1.77 markus 1019: case oBindAddress:
1020: charptr = &options->bind_address;
1021: goto parse_string;
1022:
1.183 markus 1023: case oPKCS11Provider:
1024: charptr = &options->pkcs11_provider;
1.86 markus 1025: goto parse_string;
1.85 jakob 1026:
1.17 markus 1027: case oProxyCommand:
1.144 reyk 1028: charptr = &options->proxy_command;
1029: parse_command:
1.113 markus 1030: if (s == NULL)
1031: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1032: len = strspn(s, WHITESPACE "=");
1.17 markus 1033: if (*activep && *charptr == NULL)
1.102 markus 1034: *charptr = xstrdup(s + len);
1.17 markus 1035: return 0;
1036:
1037: case oPort:
1038: intptr = &options->port;
1039: parse_int:
1.42 provos 1040: arg = strdelim(&s);
1.40 ho 1041: if (!arg || *arg == '\0')
1.17 markus 1042: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1043: if (arg[0] < '0' || arg[0] > '9')
1.17 markus 1044: fatal("%.200s line %d: Bad number.", filename, linenum);
1.21 markus 1045:
1046: /* Octal, decimal, or hex format? */
1.38 provos 1047: value = strtol(arg, &endofnumber, 0);
1048: if (arg == endofnumber)
1.21 markus 1049: fatal("%.200s line %d: Bad number.", filename, linenum);
1.17 markus 1050: if (*activep && *intptr == -1)
1051: *intptr = value;
1052: break;
1053:
1054: case oConnectionAttempts:
1055: intptr = &options->connection_attempts;
1056: goto parse_int;
1057:
1058: case oCipher:
1059: intptr = &options->cipher;
1.42 provos 1060: arg = strdelim(&s);
1.40 ho 1061: if (!arg || *arg == '\0')
1.32 markus 1062: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1063: value = cipher_number(arg);
1.17 markus 1064: if (value == -1)
1065: fatal("%.200s line %d: Bad cipher '%s'.",
1.93 deraadt 1066: filename, linenum, arg ? arg : "<NONE>");
1.17 markus 1067: if (*activep && *intptr == -1)
1068: *intptr = value;
1069: break;
1070:
1.25 markus 1071: case oCiphers:
1.42 provos 1072: arg = strdelim(&s);
1.40 ho 1073: if (!arg || *arg == '\0')
1.32 markus 1074: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1075: if (!ciphers_valid(arg))
1.31 markus 1076: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1077: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1078: if (*activep && options->ciphers == NULL)
1.38 provos 1079: options->ciphers = xstrdup(arg);
1.25 markus 1080: break;
1081:
1.62 markus 1082: case oMacs:
1083: arg = strdelim(&s);
1084: if (!arg || *arg == '\0')
1085: fatal("%.200s line %d: Missing argument.", filename, linenum);
1086: if (!mac_valid(arg))
1087: fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
1.93 deraadt 1088: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1089: if (*activep && options->macs == NULL)
1090: options->macs = xstrdup(arg);
1091: break;
1092:
1.189 djm 1093: case oKexAlgorithms:
1094: arg = strdelim(&s);
1095: if (!arg || *arg == '\0')
1096: fatal("%.200s line %d: Missing argument.",
1097: filename, linenum);
1098: if (!kex_names_valid(arg))
1099: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1100: filename, linenum, arg ? arg : "<NONE>");
1101: if (*activep && options->kex_algorithms == NULL)
1102: options->kex_algorithms = xstrdup(arg);
1103: break;
1104:
1.76 markus 1105: case oHostKeyAlgorithms:
1106: arg = strdelim(&s);
1107: if (!arg || *arg == '\0')
1108: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.226 djm 1109: if (!sshkey_names_valid2(arg, 1))
1.76 markus 1110: fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.",
1.93 deraadt 1111: filename, linenum, arg ? arg : "<NONE>");
1.76 markus 1112: if (*activep && options->hostkeyalgorithms == NULL)
1113: options->hostkeyalgorithms = xstrdup(arg);
1114: break;
1115:
1.25 markus 1116: case oProtocol:
1117: intptr = &options->protocol;
1.42 provos 1118: arg = strdelim(&s);
1.40 ho 1119: if (!arg || *arg == '\0')
1.32 markus 1120: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1121: value = proto_spec(arg);
1.25 markus 1122: if (value == SSH_PROTO_UNKNOWN)
1123: fatal("%.200s line %d: Bad protocol spec '%s'.",
1.93 deraadt 1124: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1125: if (*activep && *intptr == SSH_PROTO_UNKNOWN)
1126: *intptr = value;
1127: break;
1128:
1.17 markus 1129: case oLogLevel:
1.164 dtucker 1130: log_level_ptr = &options->log_level;
1.42 provos 1131: arg = strdelim(&s);
1.38 provos 1132: value = log_level_number(arg);
1.95 markus 1133: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1134: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1135: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1136: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1137: *log_level_ptr = (LogLevel) value;
1.17 markus 1138: break;
1139:
1.88 stevesk 1140: case oLocalForward:
1.17 markus 1141: case oRemoteForward:
1.168 stevesk 1142: case oDynamicForward:
1.42 provos 1143: arg = strdelim(&s);
1.135 djm 1144: if (arg == NULL || *arg == '\0')
1.88 stevesk 1145: fatal("%.200s line %d: Missing port argument.",
1146: filename, linenum);
1.135 djm 1147:
1.168 stevesk 1148: if (opcode == oLocalForward ||
1149: opcode == oRemoteForward) {
1150: arg2 = strdelim(&s);
1151: if (arg2 == NULL || *arg2 == '\0')
1152: fatal("%.200s line %d: Missing target argument.",
1153: filename, linenum);
1.135 djm 1154:
1.168 stevesk 1155: /* construct a string for parse_forward */
1156: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
1157: } else if (opcode == oDynamicForward) {
1158: strlcpy(fwdarg, arg, sizeof(fwdarg));
1159: }
1160:
1161: if (parse_forward(&fwd, fwdarg,
1.176 djm 1162: opcode == oDynamicForward ? 1 : 0,
1163: opcode == oRemoteForward ? 1 : 0) == 0)
1.88 stevesk 1164: fatal("%.200s line %d: Bad forwarding specification.",
1165: filename, linenum);
1.135 djm 1166:
1.88 stevesk 1167: if (*activep) {
1.168 stevesk 1168: if (opcode == oLocalForward ||
1169: opcode == oDynamicForward)
1.135 djm 1170: add_local_forward(options, &fwd);
1.88 stevesk 1171: else if (opcode == oRemoteForward)
1.135 djm 1172: add_remote_forward(options, &fwd);
1.88 stevesk 1173: }
1.17 markus 1174: break;
1.71 markus 1175:
1.90 stevesk 1176: case oClearAllForwardings:
1177: intptr = &options->clear_forwardings;
1178: goto parse_flag;
1179:
1.17 markus 1180: case oHost:
1.206 djm 1181: if (cmdline)
1182: fatal("Host directive not supported as a command-line "
1183: "option");
1.17 markus 1184: *activep = 0;
1.191 djm 1185: arg2 = NULL;
1186: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1187: negated = *arg == '!';
1188: if (negated)
1189: arg++;
1.38 provos 1190: if (match_pattern(host, arg)) {
1.191 djm 1191: if (negated) {
1192: debug("%.200s line %d: Skipping Host "
1193: "block because of negated match "
1194: "for %.100s", filename, linenum,
1195: arg);
1196: *activep = 0;
1197: break;
1198: }
1199: if (!*activep)
1200: arg2 = arg; /* logged below */
1.17 markus 1201: *activep = 1;
1202: }
1.191 djm 1203: }
1204: if (*activep)
1205: debug("%.200s line %d: Applying options for %.100s",
1206: filename, linenum, arg2);
1.42 provos 1207: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1208: return 0;
1209:
1.206 djm 1210: case oMatch:
1211: if (cmdline)
1212: fatal("Host directive not supported as a command-line "
1213: "option");
1.221 djm 1214: value = match_cfg_line(options, &s, pw, host, original_host,
1215: flags & SSHCONF_POSTCANON, filename, linenum);
1.206 djm 1216: if (value < 0)
1217: fatal("%.200s line %d: Bad Match condition", filename,
1218: linenum);
1219: *activep = value;
1220: break;
1221:
1.17 markus 1222: case oEscapeChar:
1223: intptr = &options->escape_char;
1.42 provos 1224: arg = strdelim(&s);
1.40 ho 1225: if (!arg || *arg == '\0')
1.17 markus 1226: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1227: if (strcmp(arg, "none") == 0)
1228: value = SSH_ESCAPECHAR_NONE;
1229: else if (arg[1] == '\0')
1230: value = (u_char) arg[0];
1231: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1232: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1233: value = (u_char) arg[1] & 31;
1.17 markus 1234: else {
1235: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1236: filename, linenum);
1.17 markus 1237: /* NOTREACHED */
1238: value = 0; /* Avoid compiler warning. */
1239: }
1240: if (*activep && *intptr == -1)
1241: *intptr = value;
1.112 djm 1242: break;
1243:
1244: case oAddressFamily:
1.114 djm 1245: intptr = &options->address_family;
1.207 djm 1246: multistate_ptr = multistate_addressfamily;
1247: goto parse_multistate;
1.17 markus 1248:
1.101 markus 1249: case oEnableSSHKeysign:
1250: intptr = &options->enable_ssh_keysign;
1251: goto parse_flag;
1252:
1.128 markus 1253: case oIdentitiesOnly:
1254: intptr = &options->identities_only;
1255: goto parse_flag;
1256:
1.127 markus 1257: case oServerAliveInterval:
1258: intptr = &options->server_alive_interval;
1259: goto parse_time;
1260:
1261: case oServerAliveCountMax:
1262: intptr = &options->server_alive_count_max;
1263: goto parse_int;
1264:
1.130 djm 1265: case oSendEnv:
1266: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1267: if (strchr(arg, '=') != NULL)
1268: fatal("%s line %d: Invalid environment name.",
1269: filename, linenum);
1.137 djm 1270: if (!*activep)
1271: continue;
1.130 djm 1272: if (options->num_send_env >= MAX_SEND_ENV)
1273: fatal("%s line %d: too many send env.",
1274: filename, linenum);
1275: options->send_env[options->num_send_env++] =
1276: xstrdup(arg);
1277: }
1278: break;
1279:
1.132 djm 1280: case oControlPath:
1281: charptr = &options->control_path;
1282: goto parse_string;
1283:
1284: case oControlMaster:
1285: intptr = &options->control_master;
1.207 djm 1286: multistate_ptr = multistate_controlmaster;
1287: goto parse_multistate;
1.132 djm 1288:
1.187 djm 1289: case oControlPersist:
1290: /* no/false/yes/true, or a time spec */
1291: intptr = &options->control_persist;
1292: arg = strdelim(&s);
1293: if (!arg || *arg == '\0')
1294: fatal("%.200s line %d: Missing ControlPersist"
1295: " argument.", filename, linenum);
1296: value = 0;
1297: value2 = 0; /* timeout */
1298: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1299: value = 0;
1300: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1301: value = 1;
1302: else if ((value2 = convtime(arg)) >= 0)
1303: value = 1;
1304: else
1305: fatal("%.200s line %d: Bad ControlPersist argument.",
1306: filename, linenum);
1307: if (*activep && *intptr == -1) {
1308: *intptr = value;
1309: options->control_persist_timeout = value2;
1310: }
1311: break;
1312:
1.136 djm 1313: case oHashKnownHosts:
1314: intptr = &options->hash_known_hosts;
1315: goto parse_flag;
1316:
1.144 reyk 1317: case oTunnel:
1318: intptr = &options->tun_open;
1.207 djm 1319: multistate_ptr = multistate_tunnel;
1320: goto parse_multistate;
1.144 reyk 1321:
1322: case oTunnelDevice:
1323: arg = strdelim(&s);
1324: if (!arg || *arg == '\0')
1325: fatal("%.200s line %d: Missing argument.", filename, linenum);
1326: value = a2tun(arg, &value2);
1.145 reyk 1327: if (value == SSH_TUNID_ERR)
1.144 reyk 1328: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1329: if (*activep) {
1330: options->tun_local = value;
1331: options->tun_remote = value2;
1332: }
1333: break;
1334:
1335: case oLocalCommand:
1336: charptr = &options->local_command;
1337: goto parse_command;
1338:
1339: case oPermitLocalCommand:
1340: intptr = &options->permit_local_command;
1341: goto parse_flag;
1342:
1.167 grunk 1343: case oVisualHostKey:
1344: intptr = &options->visual_host_key;
1345: goto parse_flag;
1346:
1.190 djm 1347: case oIPQoS:
1348: arg = strdelim(&s);
1349: if ((value = parse_ipqos(arg)) == -1)
1350: fatal("%s line %d: Bad IPQoS value: %s",
1351: filename, linenum, arg);
1352: arg = strdelim(&s);
1353: if (arg == NULL)
1354: value2 = value;
1355: else if ((value2 = parse_ipqos(arg)) == -1)
1356: fatal("%s line %d: Bad IPQoS value: %s",
1357: filename, linenum, arg);
1358: if (*activep) {
1359: options->ip_qos_interactive = value;
1360: options->ip_qos_bulk = value2;
1361: }
1362: break;
1363:
1.177 andreas 1364: case oUseRoaming:
1365: intptr = &options->use_roaming;
1366: goto parse_flag;
1367:
1.192 djm 1368: case oRequestTTY:
1369: intptr = &options->request_tty;
1.207 djm 1370: multistate_ptr = multistate_requesttty;
1371: goto parse_multistate;
1.192 djm 1372:
1.199 djm 1373: case oIgnoreUnknown:
1374: charptr = &options->ignored_unknown;
1375: goto parse_string;
1376:
1.205 djm 1377: case oProxyUseFdpass:
1378: intptr = &options->proxy_use_fdpass;
1379: goto parse_flag;
1380:
1.208 djm 1381: case oCanonicalDomains:
1382: value = options->num_canonical_domains != 0;
1383: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1384: valid_domain(arg, filename, linenum);
1385: if (!*activep || value)
1386: continue;
1387: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1388: fatal("%s line %d: too many hostname suffixes.",
1389: filename, linenum);
1390: options->canonical_domains[
1391: options->num_canonical_domains++] = xstrdup(arg);
1392: }
1393: break;
1394:
1.209 djm 1395: case oCanonicalizePermittedCNAMEs:
1.208 djm 1396: value = options->num_permitted_cnames != 0;
1397: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1398: /* Either '*' for everything or 'list:list' */
1399: if (strcmp(arg, "*") == 0)
1400: arg2 = arg;
1401: else {
1402: lowercase(arg);
1403: if ((arg2 = strchr(arg, ':')) == NULL ||
1404: arg2[1] == '\0') {
1405: fatal("%s line %d: "
1406: "Invalid permitted CNAME \"%s\"",
1407: filename, linenum, arg);
1408: }
1409: *arg2 = '\0';
1410: arg2++;
1411: }
1412: if (!*activep || value)
1413: continue;
1414: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1415: fatal("%s line %d: too many permitted CNAMEs.",
1416: filename, linenum);
1417: cname = options->permitted_cnames +
1418: options->num_permitted_cnames++;
1419: cname->source_list = xstrdup(arg);
1420: cname->target_list = xstrdup(arg2);
1421: }
1422: break;
1423:
1.209 djm 1424: case oCanonicalizeHostname:
1425: intptr = &options->canonicalize_hostname;
1426: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1427: goto parse_multistate;
1428:
1.209 djm 1429: case oCanonicalizeMaxDots:
1430: intptr = &options->canonicalize_max_dots;
1.208 djm 1431: goto parse_int;
1432:
1.209 djm 1433: case oCanonicalizeFallbackLocal:
1434: intptr = &options->canonicalize_fallback_local;
1.208 djm 1435: goto parse_flag;
1436:
1.220 millert 1437: case oStreamLocalBindMask:
1438: arg = strdelim(&s);
1439: if (!arg || *arg == '\0')
1440: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1441: /* Parse mode in octal format */
1442: value = strtol(arg, &endofnumber, 8);
1443: if (arg == endofnumber || value < 0 || value > 0777)
1444: fatal("%.200s line %d: Bad mask.", filename, linenum);
1445: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1446: break;
1447:
1448: case oStreamLocalBindUnlink:
1449: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1450: goto parse_flag;
1451:
1.223 djm 1452: case oRevokedHostKeys:
1453: charptr = &options->revoked_host_keys;
1454: goto parse_string;
1455:
1.224 djm 1456: case oFingerprintHash:
1.225 djm 1457: intptr = &options->fingerprint_hash;
1.224 djm 1458: arg = strdelim(&s);
1459: if (!arg || *arg == '\0')
1460: fatal("%.200s line %d: Missing argument.",
1461: filename, linenum);
1462: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1463: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1464: filename, linenum, arg);
1.225 djm 1465: if (*activep && *intptr == -1)
1466: *intptr = value;
1.224 djm 1467: break;
1468:
1.229 djm 1469: case oUpdateHostkeys:
1470: intptr = &options->update_hostkeys;
1.232 djm 1471: multistate_ptr = multistate_yesnoask;
1472: goto parse_multistate;
1.229 djm 1473:
1.230 djm 1474: case oHostbasedKeyTypes:
1475: charptr = &options->hostbased_key_types;
1476: arg = strdelim(&s);
1477: if (!arg || *arg == '\0')
1478: fatal("%.200s line %d: Missing argument.",
1479: filename, linenum);
1480: if (!sshkey_names_valid2(arg, 1))
1481: fatal("%s line %d: Bad key types '%s'.",
1482: filename, linenum, arg ? arg : "<NONE>");
1483: if (*activep && *charptr == NULL)
1484: *charptr = xstrdup(arg);
1485: break;
1486:
1.96 markus 1487: case oDeprecated:
1.98 markus 1488: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1489: filename, linenum, keyword);
1.98 markus 1490: return 0;
1.96 markus 1491:
1.110 jakob 1492: case oUnsupported:
1493: error("%s line %d: Unsupported option \"%s\"",
1494: filename, linenum, keyword);
1495: return 0;
1496:
1.17 markus 1497: default:
1.221 djm 1498: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1499: }
1500:
1501: /* Check that there is no garbage at end of line. */
1.57 djm 1502: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1503: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1504: filename, linenum, arg);
1.39 ho 1505: }
1.17 markus 1506: return 0;
1.1 deraadt 1507: }
1508:
1509:
1.19 markus 1510: /*
1511: * Reads the config file and modifies the options accordingly. Options
1512: * should already be initialized before this call. This never returns if
1.89 stevesk 1513: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1514: */
1.1 deraadt 1515:
1.89 stevesk 1516: int
1.206 djm 1517: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.221 djm 1518: const char *original_host, Options *options, int flags)
1.1 deraadt 1519: {
1.17 markus 1520: FILE *f;
1521: char line[1024];
1522: int active, linenum;
1523: int bad_options = 0;
1524:
1.129 djm 1525: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1526: return 0;
1.129 djm 1527:
1.196 dtucker 1528: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1529: struct stat sb;
1.134 deraadt 1530:
1.131 dtucker 1531: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1532: fatal("fstat %s: %s", filename, strerror(errno));
1533: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1534: (sb.st_mode & 022) != 0))
1.129 djm 1535: fatal("Bad owner or permissions on %s", filename);
1536: }
1.17 markus 1537:
1538: debug("Reading configuration data %.200s", filename);
1539:
1.19 markus 1540: /*
1541: * Mark that we are now processing the options. This flag is turned
1542: * on/off by Host specifications.
1543: */
1.17 markus 1544: active = 1;
1545: linenum = 0;
1546: while (fgets(line, sizeof(line), f)) {
1547: /* Update line number counter. */
1548: linenum++;
1.221 djm 1549: if (process_config_line(options, pw, host, original_host,
1550: line, filename, linenum, &active, flags) != 0)
1.17 markus 1551: bad_options++;
1552: }
1553: fclose(f);
1554: if (bad_options > 0)
1.64 millert 1555: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1556: filename, bad_options);
1.89 stevesk 1557: return 1;
1.1 deraadt 1558: }
1559:
1.218 djm 1560: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1561: int
1562: option_clear_or_none(const char *o)
1563: {
1564: return o == NULL || strcasecmp(o, "none") == 0;
1565: }
1566:
1.19 markus 1567: /*
1568: * Initializes options to special values that indicate that they have not yet
1569: * been set. Read_config_file will only set options with this value. Options
1570: * are processed in the following order: command line, user config file,
1571: * system config file. Last, fill_default_options is called.
1572: */
1.1 deraadt 1573:
1.26 markus 1574: void
1.17 markus 1575: initialize_options(Options * options)
1.1 deraadt 1576: {
1.17 markus 1577: memset(options, 'X', sizeof(*options));
1578: options->forward_agent = -1;
1579: options->forward_x11 = -1;
1.123 markus 1580: options->forward_x11_trusted = -1;
1.186 djm 1581: options->forward_x11_timeout = -1;
1.153 markus 1582: options->exit_on_forward_failure = -1;
1.34 markus 1583: options->xauth_location = NULL;
1.220 millert 1584: options->fwd_opts.gateway_ports = -1;
1585: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1586: options->fwd_opts.streamlocal_bind_unlink = -1;
1.17 markus 1587: options->use_privileged_port = -1;
1588: options->rsa_authentication = -1;
1.50 markus 1589: options->pubkey_authentication = -1;
1.78 markus 1590: options->challenge_response_authentication = -1;
1.118 markus 1591: options->gss_authentication = -1;
1592: options->gss_deleg_creds = -1;
1.17 markus 1593: options->password_authentication = -1;
1.48 markus 1594: options->kbd_interactive_authentication = -1;
1595: options->kbd_interactive_devices = NULL;
1.17 markus 1596: options->rhosts_rsa_authentication = -1;
1.72 markus 1597: options->hostbased_authentication = -1;
1.17 markus 1598: options->batch_mode = -1;
1599: options->check_host_ip = -1;
1600: options->strict_host_key_checking = -1;
1601: options->compression = -1;
1.126 markus 1602: options->tcp_keep_alive = -1;
1.17 markus 1603: options->compression_level = -1;
1604: options->port = -1;
1.114 djm 1605: options->address_family = -1;
1.17 markus 1606: options->connection_attempts = -1;
1.111 djm 1607: options->connection_timeout = -1;
1.17 markus 1608: options->number_of_password_prompts = -1;
1609: options->cipher = -1;
1.25 markus 1610: options->ciphers = NULL;
1.62 markus 1611: options->macs = NULL;
1.189 djm 1612: options->kex_algorithms = NULL;
1.76 markus 1613: options->hostkeyalgorithms = NULL;
1.25 markus 1614: options->protocol = SSH_PROTO_UNKNOWN;
1.17 markus 1615: options->num_identity_files = 0;
1616: options->hostname = NULL;
1.52 markus 1617: options->host_key_alias = NULL;
1.17 markus 1618: options->proxy_command = NULL;
1619: options->user = NULL;
1620: options->escape_char = -1;
1.193 djm 1621: options->num_system_hostfiles = 0;
1622: options->num_user_hostfiles = 0;
1.185 djm 1623: options->local_forwards = NULL;
1.17 markus 1624: options->num_local_forwards = 0;
1.185 djm 1625: options->remote_forwards = NULL;
1.17 markus 1626: options->num_remote_forwards = 0;
1.90 stevesk 1627: options->clear_forwardings = -1;
1.95 markus 1628: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1629: options->preferred_authentications = NULL;
1.77 markus 1630: options->bind_address = NULL;
1.183 markus 1631: options->pkcs11_provider = NULL;
1.101 markus 1632: options->enable_ssh_keysign = - 1;
1.91 markus 1633: options->no_host_authentication_for_localhost = - 1;
1.128 markus 1634: options->identities_only = - 1;
1.105 markus 1635: options->rekey_limit = - 1;
1.198 dtucker 1636: options->rekey_interval = -1;
1.107 jakob 1637: options->verify_host_key_dns = -1;
1.127 markus 1638: options->server_alive_interval = -1;
1639: options->server_alive_count_max = -1;
1.130 djm 1640: options->num_send_env = 0;
1.132 djm 1641: options->control_path = NULL;
1642: options->control_master = -1;
1.187 djm 1643: options->control_persist = -1;
1644: options->control_persist_timeout = 0;
1.136 djm 1645: options->hash_known_hosts = -1;
1.144 reyk 1646: options->tun_open = -1;
1647: options->tun_local = -1;
1648: options->tun_remote = -1;
1649: options->local_command = NULL;
1650: options->permit_local_command = -1;
1.177 andreas 1651: options->use_roaming = -1;
1.167 grunk 1652: options->visual_host_key = -1;
1.190 djm 1653: options->ip_qos_interactive = -1;
1654: options->ip_qos_bulk = -1;
1.192 djm 1655: options->request_tty = -1;
1.205 djm 1656: options->proxy_use_fdpass = -1;
1.199 djm 1657: options->ignored_unknown = NULL;
1.208 djm 1658: options->num_canonical_domains = 0;
1659: options->num_permitted_cnames = 0;
1.209 djm 1660: options->canonicalize_max_dots = -1;
1661: options->canonicalize_fallback_local = -1;
1662: options->canonicalize_hostname = -1;
1.223 djm 1663: options->revoked_host_keys = NULL;
1.224 djm 1664: options->fingerprint_hash = -1;
1.229 djm 1665: options->update_hostkeys = -1;
1.230 djm 1666: options->hostbased_key_types = NULL;
1.1 deraadt 1667: }
1668:
1.19 markus 1669: /*
1.218 djm 1670: * A petite version of fill_default_options() that just fills the options
1671: * needed for hostname canonicalization to proceed.
1672: */
1673: void
1674: fill_default_options_for_canonicalization(Options *options)
1675: {
1676: if (options->canonicalize_max_dots == -1)
1677: options->canonicalize_max_dots = 1;
1678: if (options->canonicalize_fallback_local == -1)
1679: options->canonicalize_fallback_local = 1;
1680: if (options->canonicalize_hostname == -1)
1681: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1682: }
1683:
1684: /*
1.19 markus 1685: * Called after processing other sources of option data, this fills those
1686: * options for which no value has been specified with their default values.
1687: */
1.26 markus 1688: void
1.17 markus 1689: fill_default_options(Options * options)
1.1 deraadt 1690: {
1.17 markus 1691: if (options->forward_agent == -1)
1.33 markus 1692: options->forward_agent = 0;
1.17 markus 1693: if (options->forward_x11 == -1)
1.23 markus 1694: options->forward_x11 = 0;
1.123 markus 1695: if (options->forward_x11_trusted == -1)
1696: options->forward_x11_trusted = 0;
1.186 djm 1697: if (options->forward_x11_timeout == -1)
1698: options->forward_x11_timeout = 1200;
1.153 markus 1699: if (options->exit_on_forward_failure == -1)
1700: options->exit_on_forward_failure = 0;
1.34 markus 1701: if (options->xauth_location == NULL)
1.80 markus 1702: options->xauth_location = _PATH_XAUTH;
1.220 millert 1703: if (options->fwd_opts.gateway_ports == -1)
1704: options->fwd_opts.gateway_ports = 0;
1705: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
1706: options->fwd_opts.streamlocal_bind_mask = 0177;
1707: if (options->fwd_opts.streamlocal_bind_unlink == -1)
1708: options->fwd_opts.streamlocal_bind_unlink = 0;
1.17 markus 1709: if (options->use_privileged_port == -1)
1.65 markus 1710: options->use_privileged_port = 0;
1.17 markus 1711: if (options->rsa_authentication == -1)
1712: options->rsa_authentication = 1;
1.50 markus 1713: if (options->pubkey_authentication == -1)
1714: options->pubkey_authentication = 1;
1.78 markus 1715: if (options->challenge_response_authentication == -1)
1.83 markus 1716: options->challenge_response_authentication = 1;
1.118 markus 1717: if (options->gss_authentication == -1)
1.122 markus 1718: options->gss_authentication = 0;
1.118 markus 1719: if (options->gss_deleg_creds == -1)
1720: options->gss_deleg_creds = 0;
1.17 markus 1721: if (options->password_authentication == -1)
1722: options->password_authentication = 1;
1.48 markus 1723: if (options->kbd_interactive_authentication == -1)
1.59 markus 1724: options->kbd_interactive_authentication = 1;
1.17 markus 1725: if (options->rhosts_rsa_authentication == -1)
1.99 stevesk 1726: options->rhosts_rsa_authentication = 0;
1.72 markus 1727: if (options->hostbased_authentication == -1)
1728: options->hostbased_authentication = 0;
1.17 markus 1729: if (options->batch_mode == -1)
1730: options->batch_mode = 0;
1731: if (options->check_host_ip == -1)
1732: options->check_host_ip = 1;
1733: if (options->strict_host_key_checking == -1)
1734: options->strict_host_key_checking = 2; /* 2 is default */
1735: if (options->compression == -1)
1736: options->compression = 0;
1.126 markus 1737: if (options->tcp_keep_alive == -1)
1738: options->tcp_keep_alive = 1;
1.17 markus 1739: if (options->compression_level == -1)
1740: options->compression_level = 6;
1741: if (options->port == -1)
1742: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 1743: if (options->address_family == -1)
1744: options->address_family = AF_UNSPEC;
1.17 markus 1745: if (options->connection_attempts == -1)
1.84 markus 1746: options->connection_attempts = 1;
1.17 markus 1747: if (options->number_of_password_prompts == -1)
1748: options->number_of_password_prompts = 3;
1749: /* Selected in ssh_login(). */
1750: if (options->cipher == -1)
1751: options->cipher = SSH_CIPHER_NOT_SET;
1.31 markus 1752: /* options->ciphers, default set in myproposals.h */
1.62 markus 1753: /* options->macs, default set in myproposals.h */
1.189 djm 1754: /* options->kex_algorithms, default set in myproposals.h */
1.76 markus 1755: /* options->hostkeyalgorithms, default set in myproposals.h */
1.25 markus 1756: if (options->protocol == SSH_PROTO_UNKNOWN)
1.178 markus 1757: options->protocol = SSH_PROTO_2;
1.17 markus 1758: if (options->num_identity_files == 0) {
1.50 markus 1759: if (options->protocol & SSH_PROTO_1) {
1.195 dtucker 1760: add_identity_file(options, "~/",
1761: _PATH_SSH_CLIENT_IDENTITY, 0);
1.50 markus 1762: }
1763: if (options->protocol & SSH_PROTO_2) {
1.195 dtucker 1764: add_identity_file(options, "~/",
1765: _PATH_SSH_CLIENT_ID_RSA, 0);
1766: add_identity_file(options, "~/",
1767: _PATH_SSH_CLIENT_ID_DSA, 0);
1768: add_identity_file(options, "~/",
1769: _PATH_SSH_CLIENT_ID_ECDSA, 0);
1.215 markus 1770: add_identity_file(options, "~/",
1771: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.50 markus 1772: }
1.27 markus 1773: }
1.17 markus 1774: if (options->escape_char == -1)
1775: options->escape_char = '~';
1.193 djm 1776: if (options->num_system_hostfiles == 0) {
1777: options->system_hostfiles[options->num_system_hostfiles++] =
1778: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
1779: options->system_hostfiles[options->num_system_hostfiles++] =
1780: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
1781: }
1782: if (options->num_user_hostfiles == 0) {
1783: options->user_hostfiles[options->num_user_hostfiles++] =
1784: xstrdup(_PATH_SSH_USER_HOSTFILE);
1785: options->user_hostfiles[options->num_user_hostfiles++] =
1786: xstrdup(_PATH_SSH_USER_HOSTFILE2);
1787: }
1.95 markus 1788: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 1789: options->log_level = SYSLOG_LEVEL_INFO;
1.90 stevesk 1790: if (options->clear_forwardings == 1)
1791: clear_forwardings(options);
1.91 markus 1792: if (options->no_host_authentication_for_localhost == - 1)
1793: options->no_host_authentication_for_localhost = 0;
1.128 markus 1794: if (options->identities_only == -1)
1795: options->identities_only = 0;
1.101 markus 1796: if (options->enable_ssh_keysign == -1)
1797: options->enable_ssh_keysign = 0;
1.105 markus 1798: if (options->rekey_limit == -1)
1799: options->rekey_limit = 0;
1.198 dtucker 1800: if (options->rekey_interval == -1)
1801: options->rekey_interval = 0;
1.107 jakob 1802: if (options->verify_host_key_dns == -1)
1803: options->verify_host_key_dns = 0;
1.127 markus 1804: if (options->server_alive_interval == -1)
1805: options->server_alive_interval = 0;
1806: if (options->server_alive_count_max == -1)
1807: options->server_alive_count_max = 3;
1.132 djm 1808: if (options->control_master == -1)
1809: options->control_master = 0;
1.187 djm 1810: if (options->control_persist == -1) {
1811: options->control_persist = 0;
1812: options->control_persist_timeout = 0;
1813: }
1.136 djm 1814: if (options->hash_known_hosts == -1)
1815: options->hash_known_hosts = 0;
1.144 reyk 1816: if (options->tun_open == -1)
1.145 reyk 1817: options->tun_open = SSH_TUNMODE_NO;
1818: if (options->tun_local == -1)
1819: options->tun_local = SSH_TUNID_ANY;
1820: if (options->tun_remote == -1)
1821: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 1822: if (options->permit_local_command == -1)
1823: options->permit_local_command = 0;
1.177 andreas 1824: if (options->use_roaming == -1)
1825: options->use_roaming = 1;
1.167 grunk 1826: if (options->visual_host_key == -1)
1827: options->visual_host_key = 0;
1.190 djm 1828: if (options->ip_qos_interactive == -1)
1829: options->ip_qos_interactive = IPTOS_LOWDELAY;
1830: if (options->ip_qos_bulk == -1)
1831: options->ip_qos_bulk = IPTOS_THROUGHPUT;
1.192 djm 1832: if (options->request_tty == -1)
1833: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 1834: if (options->proxy_use_fdpass == -1)
1835: options->proxy_use_fdpass = 0;
1.209 djm 1836: if (options->canonicalize_max_dots == -1)
1837: options->canonicalize_max_dots = 1;
1838: if (options->canonicalize_fallback_local == -1)
1839: options->canonicalize_fallback_local = 1;
1840: if (options->canonicalize_hostname == -1)
1841: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 1842: if (options->fingerprint_hash == -1)
1843: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.229 djm 1844: if (options->update_hostkeys == -1)
1.231 djm 1845: options->update_hostkeys = 0;
1.230 djm 1846: if (options->hostbased_key_types == NULL)
1847: options->hostbased_key_types = xstrdup("*");
1.224 djm 1848:
1.207 djm 1849: #define CLEAR_ON_NONE(v) \
1850: do { \
1.218 djm 1851: if (option_clear_or_none(v)) { \
1.207 djm 1852: free(v); \
1853: v = NULL; \
1854: } \
1855: } while(0)
1856: CLEAR_ON_NONE(options->local_command);
1857: CLEAR_ON_NONE(options->proxy_command);
1858: CLEAR_ON_NONE(options->control_path);
1.223 djm 1859: CLEAR_ON_NONE(options->revoked_host_keys);
1.17 markus 1860: /* options->user will be set in the main program if appropriate */
1861: /* options->hostname will be set in the main program if appropriate */
1.52 markus 1862: /* options->host_key_alias should not be set by default */
1.67 markus 1863: /* options->preferred_authentications will be set in ssh */
1.135 djm 1864: }
1865:
1.220 millert 1866: struct fwdarg {
1867: char *arg;
1868: int ispath;
1869: };
1870:
1871: /*
1872: * parse_fwd_field
1873: * parses the next field in a port forwarding specification.
1874: * sets fwd to the parsed field and advances p past the colon
1875: * or sets it to NULL at end of string.
1876: * returns 0 on success, else non-zero.
1877: */
1878: static int
1879: parse_fwd_field(char **p, struct fwdarg *fwd)
1880: {
1881: char *ep, *cp = *p;
1882: int ispath = 0;
1883:
1884: if (*cp == '\0') {
1885: *p = NULL;
1886: return -1; /* end of string */
1887: }
1888:
1889: /*
1890: * A field escaped with square brackets is used literally.
1891: * XXX - allow ']' to be escaped via backslash?
1892: */
1893: if (*cp == '[') {
1894: /* find matching ']' */
1895: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
1896: if (*ep == '/')
1897: ispath = 1;
1898: }
1899: /* no matching ']' or not at end of field. */
1900: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
1901: return -1;
1902: /* NUL terminate the field and advance p past the colon */
1903: *ep++ = '\0';
1904: if (*ep != '\0')
1905: *ep++ = '\0';
1906: fwd->arg = cp + 1;
1907: fwd->ispath = ispath;
1908: *p = ep;
1909: return 0;
1910: }
1911:
1912: for (cp = *p; *cp != '\0'; cp++) {
1913: switch (*cp) {
1914: case '\\':
1915: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 ! djm 1916: if (*cp == '\0')
! 1917: return -1;
1.220 millert 1918: break;
1919: case '/':
1920: ispath = 1;
1921: break;
1922: case ':':
1923: *cp++ = '\0';
1924: goto done;
1925: }
1926: }
1927: done:
1928: fwd->arg = *p;
1929: fwd->ispath = ispath;
1930: *p = cp;
1931: return 0;
1932: }
1933:
1.135 djm 1934: /*
1935: * parse_forward
1936: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 1937: * dynamicfwd == 0
1.220 millert 1938: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
1939: * listenpath:connectpath
1.168 stevesk 1940: * dynamicfwd == 1
1941: * [listenhost:]listenport
1.135 djm 1942: * returns number of arguments parsed or zero on error
1943: */
1944: int
1.220 millert 1945: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 1946: {
1.220 millert 1947: struct fwdarg fwdargs[4];
1948: char *p, *cp;
1.135 djm 1949: int i;
1950:
1.220 millert 1951: memset(fwd, 0, sizeof(*fwd));
1952: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 1953:
1954: cp = p = xstrdup(fwdspec);
1955:
1956: /* skip leading spaces */
1.214 deraadt 1957: while (isspace((u_char)*cp))
1.135 djm 1958: cp++;
1959:
1.220 millert 1960: for (i = 0; i < 4; ++i) {
1961: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 1962: break;
1.220 millert 1963: }
1.135 djm 1964:
1.170 stevesk 1965: /* Check for trailing garbage */
1.220 millert 1966: if (cp != NULL && *cp != '\0') {
1.135 djm 1967: i = 0; /* failure */
1.220 millert 1968: }
1.135 djm 1969:
1970: switch (i) {
1.168 stevesk 1971: case 1:
1.220 millert 1972: if (fwdargs[0].ispath) {
1973: fwd->listen_path = xstrdup(fwdargs[0].arg);
1974: fwd->listen_port = PORT_STREAMLOCAL;
1975: } else {
1976: fwd->listen_host = NULL;
1977: fwd->listen_port = a2port(fwdargs[0].arg);
1978: }
1.168 stevesk 1979: fwd->connect_host = xstrdup("socks");
1980: break;
1981:
1982: case 2:
1.220 millert 1983: if (fwdargs[0].ispath && fwdargs[1].ispath) {
1984: fwd->listen_path = xstrdup(fwdargs[0].arg);
1985: fwd->listen_port = PORT_STREAMLOCAL;
1986: fwd->connect_path = xstrdup(fwdargs[1].arg);
1987: fwd->connect_port = PORT_STREAMLOCAL;
1988: } else if (fwdargs[1].ispath) {
1989: fwd->listen_host = NULL;
1990: fwd->listen_port = a2port(fwdargs[0].arg);
1991: fwd->connect_path = xstrdup(fwdargs[1].arg);
1992: fwd->connect_port = PORT_STREAMLOCAL;
1993: } else {
1994: fwd->listen_host = xstrdup(fwdargs[0].arg);
1995: fwd->listen_port = a2port(fwdargs[1].arg);
1996: fwd->connect_host = xstrdup("socks");
1997: }
1.168 stevesk 1998: break;
1999:
1.135 djm 2000: case 3:
1.220 millert 2001: if (fwdargs[0].ispath) {
2002: fwd->listen_path = xstrdup(fwdargs[0].arg);
2003: fwd->listen_port = PORT_STREAMLOCAL;
2004: fwd->connect_host = xstrdup(fwdargs[1].arg);
2005: fwd->connect_port = a2port(fwdargs[2].arg);
2006: } else if (fwdargs[2].ispath) {
2007: fwd->listen_host = xstrdup(fwdargs[0].arg);
2008: fwd->listen_port = a2port(fwdargs[1].arg);
2009: fwd->connect_path = xstrdup(fwdargs[2].arg);
2010: fwd->connect_port = PORT_STREAMLOCAL;
2011: } else {
2012: fwd->listen_host = NULL;
2013: fwd->listen_port = a2port(fwdargs[0].arg);
2014: fwd->connect_host = xstrdup(fwdargs[1].arg);
2015: fwd->connect_port = a2port(fwdargs[2].arg);
2016: }
1.135 djm 2017: break;
2018:
2019: case 4:
1.220 millert 2020: fwd->listen_host = xstrdup(fwdargs[0].arg);
2021: fwd->listen_port = a2port(fwdargs[1].arg);
2022: fwd->connect_host = xstrdup(fwdargs[2].arg);
2023: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2024: break;
2025: default:
2026: i = 0; /* failure */
2027: }
2028:
1.202 djm 2029: free(p);
1.135 djm 2030:
1.168 stevesk 2031: if (dynamicfwd) {
2032: if (!(i == 1 || i == 2))
2033: goto fail_free;
2034: } else {
1.220 millert 2035: if (!(i == 3 || i == 4)) {
2036: if (fwd->connect_path == NULL &&
2037: fwd->listen_path == NULL)
2038: goto fail_free;
2039: }
2040: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2041: goto fail_free;
2042: }
2043:
1.220 millert 2044: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2045: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2046: goto fail_free;
2047: if (fwd->connect_host != NULL &&
2048: strlen(fwd->connect_host) >= NI_MAXHOST)
2049: goto fail_free;
1.220 millert 2050: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2051: if (fwd->connect_path != NULL &&
2052: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2053: goto fail_free;
1.176 djm 2054: if (fwd->listen_host != NULL &&
2055: strlen(fwd->listen_host) >= NI_MAXHOST)
2056: goto fail_free;
1.220 millert 2057: if (fwd->listen_path != NULL &&
2058: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2059: goto fail_free;
1.135 djm 2060:
2061: return (i);
2062:
2063: fail_free:
1.202 djm 2064: free(fwd->connect_host);
2065: fwd->connect_host = NULL;
1.220 millert 2066: free(fwd->connect_path);
2067: fwd->connect_path = NULL;
1.202 djm 2068: free(fwd->listen_host);
2069: fwd->listen_host = NULL;
1.220 millert 2070: free(fwd->listen_path);
2071: fwd->listen_path = NULL;
1.135 djm 2072: return (0);
1.221 djm 2073: }
2074:
2075: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2076: static const char *
2077: fmt_multistate_int(int val, const struct multistate *m)
2078: {
2079: u_int i;
2080:
2081: for (i = 0; m[i].key != NULL; i++) {
2082: if (m[i].value == val)
2083: return m[i].key;
2084: }
2085: return "UNKNOWN";
2086: }
2087:
2088: static const char *
2089: fmt_intarg(OpCodes code, int val)
2090: {
2091: if (val == -1)
2092: return "unset";
2093: switch (code) {
2094: case oAddressFamily:
2095: return fmt_multistate_int(val, multistate_addressfamily);
2096: case oVerifyHostKeyDNS:
2097: case oStrictHostKeyChecking:
1.232 djm 2098: case oUpdateHostkeys:
1.221 djm 2099: return fmt_multistate_int(val, multistate_yesnoask);
2100: case oControlMaster:
2101: return fmt_multistate_int(val, multistate_controlmaster);
2102: case oTunnel:
2103: return fmt_multistate_int(val, multistate_tunnel);
2104: case oRequestTTY:
2105: return fmt_multistate_int(val, multistate_requesttty);
2106: case oCanonicalizeHostname:
2107: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.224 djm 2108: case oFingerprintHash:
2109: return ssh_digest_alg_name(val);
1.221 djm 2110: case oProtocol:
2111: switch (val) {
2112: case SSH_PROTO_1:
2113: return "1";
2114: case SSH_PROTO_2:
2115: return "2";
2116: case (SSH_PROTO_1|SSH_PROTO_2):
2117: return "2,1";
2118: default:
2119: return "UNKNOWN";
2120: }
2121: default:
2122: switch (val) {
2123: case 0:
2124: return "no";
2125: case 1:
2126: return "yes";
2127: default:
2128: return "UNKNOWN";
2129: }
2130: }
2131: }
2132:
2133: static const char *
2134: lookup_opcode_name(OpCodes code)
2135: {
2136: u_int i;
2137:
2138: for (i = 0; keywords[i].name != NULL; i++)
2139: if (keywords[i].opcode == code)
2140: return(keywords[i].name);
2141: return "UNKNOWN";
2142: }
2143:
2144: static void
2145: dump_cfg_int(OpCodes code, int val)
2146: {
2147: printf("%s %d\n", lookup_opcode_name(code), val);
2148: }
2149:
2150: static void
2151: dump_cfg_fmtint(OpCodes code, int val)
2152: {
2153: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2154: }
2155:
2156: static void
2157: dump_cfg_string(OpCodes code, const char *val)
2158: {
2159: if (val == NULL)
2160: return;
2161: printf("%s %s\n", lookup_opcode_name(code), val);
2162: }
2163:
2164: static void
2165: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2166: {
2167: u_int i;
2168:
2169: for (i = 0; i < count; i++)
2170: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2171: }
2172:
2173: static void
2174: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2175: {
2176: u_int i;
2177:
2178: printf("%s", lookup_opcode_name(code));
2179: for (i = 0; i < count; i++)
2180: printf(" %s", vals[i]);
2181: printf("\n");
2182: }
2183:
2184: static void
2185: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2186: {
2187: const struct Forward *fwd;
2188: u_int i;
2189:
2190: /* oDynamicForward */
2191: for (i = 0; i < count; i++) {
2192: fwd = &fwds[i];
2193: if (code == oDynamicForward &&
2194: strcmp(fwd->connect_host, "socks") != 0)
2195: continue;
2196: if (code == oLocalForward &&
2197: strcmp(fwd->connect_host, "socks") == 0)
2198: continue;
2199: printf("%s", lookup_opcode_name(code));
2200: if (fwd->listen_port == PORT_STREAMLOCAL)
2201: printf(" %s", fwd->listen_path);
2202: else if (fwd->listen_host == NULL)
2203: printf(" %d", fwd->listen_port);
2204: else {
2205: printf(" [%s]:%d",
2206: fwd->listen_host, fwd->listen_port);
2207: }
2208: if (code != oDynamicForward) {
2209: if (fwd->connect_port == PORT_STREAMLOCAL)
2210: printf(" %s", fwd->connect_path);
2211: else if (fwd->connect_host == NULL)
2212: printf(" %d", fwd->connect_port);
2213: else {
2214: printf(" [%s]:%d",
2215: fwd->connect_host, fwd->connect_port);
2216: }
2217: }
2218: printf("\n");
2219: }
2220: }
2221:
2222: void
2223: dump_client_config(Options *o, const char *host)
2224: {
2225: int i;
2226: char vbuf[5];
2227:
2228: /* Most interesting options first: user, host, port */
2229: dump_cfg_string(oUser, o->user);
2230: dump_cfg_string(oHostName, host);
2231: dump_cfg_int(oPort, o->port);
2232:
2233: /* Flag options */
2234: dump_cfg_fmtint(oAddressFamily, o->address_family);
2235: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2236: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2237: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2238: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2239: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2240: dump_cfg_fmtint(oCompression, o->compression);
2241: dump_cfg_fmtint(oControlMaster, o->control_master);
2242: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
2243: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2244: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2245: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2246: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2247: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2248: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2249: #ifdef GSSAPI
2250: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2251: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2252: #endif /* GSSAPI */
2253: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2254: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2255: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2256: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2257: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2258: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2259: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2260: dump_cfg_fmtint(oProtocol, o->protocol);
2261: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2262: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2263: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2264: dump_cfg_fmtint(oRhostsRSAAuthentication, o->rhosts_rsa_authentication);
2265: dump_cfg_fmtint(oRSAAuthentication, o->rsa_authentication);
2266: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2267: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2268: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2269: dump_cfg_fmtint(oTunnel, o->tun_open);
2270: dump_cfg_fmtint(oUsePrivilegedPort, o->use_privileged_port);
2271: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2272: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2273: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2274:
2275: /* Integer options */
2276: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2277: dump_cfg_int(oCompressionLevel, o->compression_level);
2278: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2279: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2280: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2281: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2282: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2283:
2284: /* String options */
2285: dump_cfg_string(oBindAddress, o->bind_address);
2286: dump_cfg_string(oCiphers, o->ciphers ? o->ciphers : KEX_CLIENT_ENCRYPT);
2287: dump_cfg_string(oControlPath, o->control_path);
2288: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms ? o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
2289: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2290: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.221 djm 2291: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
2292: dump_cfg_string(oKexAlgorithms, o->kex_algorithms ? o->kex_algorithms : KEX_CLIENT_KEX);
2293: dump_cfg_string(oLocalCommand, o->local_command);
2294: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
2295: dump_cfg_string(oMacs, o->macs ? o->macs : KEX_CLIENT_MAC);
2296: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
2297: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
2298: dump_cfg_string(oProxyCommand, o->proxy_command);
1.230 djm 2299: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2300: dump_cfg_string(oXAuthLocation, o->xauth_location);
2301:
1.230 djm 2302: /* Forwards */
1.221 djm 2303: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2304: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2305: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2306:
2307: /* String array options */
2308: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2309: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
2310: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2311: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2312: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
2313:
2314: /* Special cases */
2315:
2316: /* oConnectTimeout */
2317: if (o->connection_timeout == -1)
2318: printf("connecttimeout none\n");
2319: else
2320: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2321:
2322: /* oTunnelDevice */
2323: printf("tunneldevice");
2324: if (o->tun_local == SSH_TUNID_ANY)
2325: printf(" any");
2326: else
2327: printf(" %d", o->tun_local);
2328: if (o->tun_remote == SSH_TUNID_ANY)
2329: printf(":any");
2330: else
2331: printf(":%d", o->tun_remote);
2332: printf("\n");
2333:
2334: /* oCanonicalizePermittedCNAMEs */
2335: if ( o->num_permitted_cnames > 0) {
2336: printf("canonicalizePermittedcnames");
2337: for (i = 0; i < o->num_permitted_cnames; i++) {
2338: printf(" %s:%s", o->permitted_cnames[i].source_list,
2339: o->permitted_cnames[i].target_list);
2340: }
2341: printf("\n");
2342: }
2343:
2344: /* oCipher */
2345: if (o->cipher != SSH_CIPHER_NOT_SET)
2346: printf("Cipher %s\n", cipher_name(o->cipher));
2347:
2348: /* oControlPersist */
2349: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2350: dump_cfg_fmtint(oControlPersist, o->control_persist);
2351: else
2352: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2353:
2354: /* oEscapeChar */
2355: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2356: printf("escapechar none\n");
2357: else {
2358: vis(vbuf, o->escape_char, VIS_WHITE, 0);
2359: printf("escapechar %s\n", vbuf);
2360: }
2361:
2362: /* oIPQoS */
2363: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2364: printf("%s\n", iptos2str(o->ip_qos_bulk));
2365:
2366: /* oRekeyLimit */
2367: printf("rekeylimit %lld %d\n",
2368: (long long)o->rekey_limit, o->rekey_interval);
2369:
2370: /* oStreamLocalBindMask */
2371: printf("streamlocalbindmask 0%o\n",
2372: o->fwd_opts.streamlocal_bind_mask);
1.1 deraadt 2373: }
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