Annotation of src/usr.bin/ssh/readconf.c, Revision 1.221
1.221 ! djm 1: /* $OpenBSD: readconf.c,v 1.220 2014/07/15 15:54:14 millert 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/in_systm.h>
23: #include <netinet/ip.h>
1.148 stevesk 24:
25: #include <ctype.h>
1.154 stevesk 26: #include <errno.h>
1.206 djm 27: #include <fcntl.h>
1.155 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>
1.200 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"
1.159 deraadt 44: #include "key.h"
1.220 millert 45: #include "misc.h"
1.58 markus 46: #include "readconf.h"
47: #include "match.h"
1.159 deraadt 48: #include "buffer.h"
1.62 markus 49: #include "kex.h"
50: #include "mac.h"
1.206 djm 51: #include "uidswap.h"
1.221 ! djm 52: #include "myproposal.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,
1.220 millert 147: oStreamLocalBindMask, oStreamLocalBindUnlink,
1.199 djm 148: oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 149: } OpCodes;
150:
151: /* Textual representations of the tokens. */
152:
1.17 markus 153: static struct {
154: const char *name;
155: OpCodes opcode;
156: } keywords[] = {
157: { "forwardagent", oForwardAgent },
158: { "forwardx11", oForwardX11 },
1.123 markus 159: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 160: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 161: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 162: { "xauthlocation", oXAuthLocation },
1.17 markus 163: { "gatewayports", oGatewayPorts },
164: { "useprivilegedport", oUsePrivilegedPort },
1.116 markus 165: { "rhostsauthentication", oDeprecated },
1.17 markus 166: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 167: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
168: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.17 markus 169: { "rsaauthentication", oRSAAuthentication },
1.50 markus 170: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 171: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.72 markus 172: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
1.73 markus 173: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 174: { "challengeresponseauthentication", oChallengeResponseAuthentication },
175: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
176: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.110 jakob 177: { "kerberosauthentication", oUnsupported },
178: { "kerberostgtpassing", oUnsupported },
179: { "afstokenpassing", oUnsupported },
1.118 markus 180: #if defined(GSSAPI)
181: { "gssapiauthentication", oGssAuthentication },
182: { "gssapidelegatecredentials", oGssDelegateCreds },
183: #else
184: { "gssapiauthentication", oUnsupported },
185: { "gssapidelegatecredentials", oUnsupported },
186: #endif
1.96 markus 187: { "fallbacktorsh", oDeprecated },
188: { "usersh", oDeprecated },
1.17 markus 189: { "identityfile", oIdentityFile },
1.174 stevesk 190: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 191: { "identitiesonly", oIdentitiesOnly },
1.17 markus 192: { "hostname", oHostName },
1.52 markus 193: { "hostkeyalias", oHostKeyAlias },
1.17 markus 194: { "proxycommand", oProxyCommand },
195: { "port", oPort },
196: { "cipher", oCipher },
1.25 markus 197: { "ciphers", oCiphers },
1.62 markus 198: { "macs", oMacs },
1.25 markus 199: { "protocol", oProtocol },
1.17 markus 200: { "remoteforward", oRemoteForward },
201: { "localforward", oLocalForward },
202: { "user", oUser },
203: { "host", oHost },
1.206 djm 204: { "match", oMatch },
1.17 markus 205: { "escapechar", oEscapeChar },
206: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.193 djm 207: { "globalknownhostsfile2", oDeprecated },
1.174 stevesk 208: { "userknownhostsfile", oUserKnownHostsFile },
1.221 ! djm 209: { "userknownhostsfile2", oDeprecated },
1.17 markus 210: { "connectionattempts", oConnectionAttempts },
211: { "batchmode", oBatchMode },
212: { "checkhostip", oCheckHostIP },
213: { "stricthostkeychecking", oStrictHostKeyChecking },
214: { "compression", oCompression },
215: { "compressionlevel", oCompressionLevel },
1.126 markus 216: { "tcpkeepalive", oTCPKeepAlive },
217: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 218: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
219: { "loglevel", oLogLevel },
1.71 markus 220: { "dynamicforward", oDynamicForward },
1.67 markus 221: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 222: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.77 markus 223: { "bindaddress", oBindAddress },
1.183 markus 224: #ifdef ENABLE_PKCS11
225: { "smartcarddevice", oPKCS11Provider },
226: { "pkcs11provider", oPKCS11Provider },
1.110 jakob 227: #else
228: { "smartcarddevice", oUnsupported },
1.183 markus 229: { "pkcs11provider", oUnsupported },
1.110 jakob 230: #endif
1.93 deraadt 231: { "clearallforwardings", oClearAllForwardings },
1.101 markus 232: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 233: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 234: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 235: { "rekeylimit", oRekeyLimit },
1.111 djm 236: { "connecttimeout", oConnectTimeout },
1.112 djm 237: { "addressfamily", oAddressFamily },
1.127 markus 238: { "serveraliveinterval", oServerAliveInterval },
239: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 240: { "sendenv", oSendEnv },
1.132 djm 241: { "controlpath", oControlPath },
242: { "controlmaster", oControlMaster },
1.187 djm 243: { "controlpersist", oControlPersist },
1.136 djm 244: { "hashknownhosts", oHashKnownHosts },
1.144 reyk 245: { "tunnel", oTunnel },
246: { "tunneldevice", oTunnelDevice },
247: { "localcommand", oLocalCommand },
248: { "permitlocalcommand", oPermitLocalCommand },
1.167 grunk 249: { "visualhostkey", oVisualHostKey },
1.177 andreas 250: { "useroaming", oUseRoaming },
1.189 djm 251: { "kexalgorithms", oKexAlgorithms },
1.190 djm 252: { "ipqos", oIPQoS },
1.192 djm 253: { "requesttty", oRequestTTY },
1.205 djm 254: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 255: { "canonicaldomains", oCanonicalDomains },
1.209 djm 256: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
257: { "canonicalizehostname", oCanonicalizeHostname },
258: { "canonicalizemaxdots", oCanonicalizeMaxDots },
259: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 260: { "streamlocalbindmask", oStreamLocalBindMask },
261: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.199 djm 262: { "ignoreunknown", oIgnoreUnknown },
1.171 djm 263:
1.92 stevesk 264: { NULL, oBadOption }
1.13 markus 265: };
266:
1.19 markus 267: /*
268: * Adds a local TCP/IP port forward to options. Never returns if there is an
269: * error.
270: */
1.1 deraadt 271:
1.26 markus 272: void
1.220 millert 273: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 274: {
1.220 millert 275: struct Forward *fwd;
1.17 markus 276: extern uid_t original_real_uid;
1.185 djm 277:
1.220 millert 278: if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0 &&
279: newfwd->listen_path == NULL)
1.64 millert 280: fatal("Privileged ports can only be forwarded by root.");
1.185 djm 281: options->local_forwards = xrealloc(options->local_forwards,
282: options->num_local_forwards + 1,
283: sizeof(*options->local_forwards));
1.17 markus 284: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 285:
1.172 stevesk 286: fwd->listen_host = newfwd->listen_host;
1.135 djm 287: fwd->listen_port = newfwd->listen_port;
1.220 millert 288: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 289: fwd->connect_host = newfwd->connect_host;
1.135 djm 290: fwd->connect_port = newfwd->connect_port;
1.220 millert 291: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 292: }
293:
1.19 markus 294: /*
295: * Adds a remote TCP/IP port forward to options. Never returns if there is
296: * an error.
297: */
1.1 deraadt 298:
1.26 markus 299: void
1.220 millert 300: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 301: {
1.220 millert 302: struct Forward *fwd;
1.185 djm 303:
304: options->remote_forwards = xrealloc(options->remote_forwards,
305: options->num_remote_forwards + 1,
306: sizeof(*options->remote_forwards));
1.17 markus 307: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 308:
1.172 stevesk 309: fwd->listen_host = newfwd->listen_host;
1.135 djm 310: fwd->listen_port = newfwd->listen_port;
1.220 millert 311: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 312: fwd->connect_host = newfwd->connect_host;
1.135 djm 313: fwd->connect_port = newfwd->connect_port;
1.220 millert 314: fwd->connect_path = newfwd->connect_path;
1.194 markus 315: fwd->handle = newfwd->handle;
1.184 markus 316: fwd->allocated_port = 0;
1.1 deraadt 317: }
318:
1.90 stevesk 319: static void
320: clear_forwardings(Options *options)
321: {
322: int i;
323:
1.135 djm 324: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 325: free(options->local_forwards[i].listen_host);
1.220 millert 326: free(options->local_forwards[i].listen_path);
1.202 djm 327: free(options->local_forwards[i].connect_host);
1.220 millert 328: free(options->local_forwards[i].connect_path);
1.135 djm 329: }
1.185 djm 330: if (options->num_local_forwards > 0) {
1.202 djm 331: free(options->local_forwards);
1.185 djm 332: options->local_forwards = NULL;
333: }
1.90 stevesk 334: options->num_local_forwards = 0;
1.135 djm 335: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 336: free(options->remote_forwards[i].listen_host);
1.220 millert 337: free(options->remote_forwards[i].listen_path);
1.202 djm 338: free(options->remote_forwards[i].connect_host);
1.220 millert 339: free(options->remote_forwards[i].connect_path);
1.135 djm 340: }
1.185 djm 341: if (options->num_remote_forwards > 0) {
1.202 djm 342: free(options->remote_forwards);
1.185 djm 343: options->remote_forwards = NULL;
344: }
1.90 stevesk 345: options->num_remote_forwards = 0;
1.145 reyk 346: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 347: }
348:
1.195 dtucker 349: void
350: add_identity_file(Options *options, const char *dir, const char *filename,
351: int userprovided)
352: {
353: char *path;
1.219 djm 354: int i;
1.195 dtucker 355:
356: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
357: fatal("Too many identity files specified (max %d)",
358: SSH_MAX_IDENTITY_FILES);
359:
360: if (dir == NULL) /* no dir, filename is absolute */
361: path = xstrdup(filename);
362: else
363: (void)xasprintf(&path, "%.100s%.100s", dir, filename);
1.219 djm 364:
365: /* Avoid registering duplicates */
366: for (i = 0; i < options->num_identity_files; i++) {
367: if (options->identity_file_userprovided[i] == userprovided &&
368: strcmp(options->identity_files[i], path) == 0) {
369: debug2("%s: ignoring duplicate key %s", __func__, path);
370: free(path);
371: return;
372: }
373: }
1.195 dtucker 374:
375: options->identity_file_userprovided[options->num_identity_files] =
376: userprovided;
377: options->identity_files[options->num_identity_files++] = path;
378: }
379:
1.206 djm 380: int
381: default_ssh_port(void)
382: {
383: static int port;
384: struct servent *sp;
385:
386: if (port == 0) {
387: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
388: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
389: }
390: return port;
391: }
392:
393: /*
394: * Execute a command in a shell.
395: * Return its exit status or -1 on abnormal exit.
396: */
397: static int
398: execute_in_shell(const char *cmd)
399: {
400: char *shell, *command_string;
401: pid_t pid;
402: int devnull, status;
403: extern uid_t original_real_uid;
404:
405: if ((shell = getenv("SHELL")) == NULL)
406: shell = _PATH_BSHELL;
407:
408: /*
409: * Use "exec" to avoid "sh -c" processes on some platforms
410: * (e.g. Solaris)
411: */
412: xasprintf(&command_string, "exec %s", cmd);
413:
414: /* Need this to redirect subprocess stdin/out */
415: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
416: fatal("open(/dev/null): %s", strerror(errno));
417:
418: debug("Executing command: '%.500s'", cmd);
419:
420: /* Fork and execute the command. */
421: if ((pid = fork()) == 0) {
422: char *argv[4];
423:
424: /* Child. Permanently give up superuser privileges. */
425: permanently_drop_suid(original_real_uid);
426:
427: /* Redirect child stdin and stdout. Leave stderr */
428: if (dup2(devnull, STDIN_FILENO) == -1)
429: fatal("dup2: %s", strerror(errno));
430: if (dup2(devnull, STDOUT_FILENO) == -1)
431: fatal("dup2: %s", strerror(errno));
432: if (devnull > STDERR_FILENO)
433: close(devnull);
434: closefrom(STDERR_FILENO + 1);
435:
436: argv[0] = shell;
437: argv[1] = "-c";
438: argv[2] = command_string;
439: argv[3] = NULL;
440:
441: execv(argv[0], argv);
442: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
443: /* Die with signal to make this error apparent to parent. */
444: signal(SIGTERM, SIG_DFL);
445: kill(getpid(), SIGTERM);
446: _exit(1);
447: }
448: /* Parent. */
449: if (pid < 0)
450: fatal("%s: fork: %.100s", __func__, strerror(errno));
451:
452: close(devnull);
453: free(command_string);
454:
455: while (waitpid(pid, &status, 0) == -1) {
456: if (errno != EINTR && errno != EAGAIN)
457: fatal("%s: waitpid: %s", __func__, strerror(errno));
458: }
459: if (!WIFEXITED(status)) {
460: error("command '%.100s' exited abnormally", cmd);
461: return -1;
1.221 ! djm 462: }
1.206 djm 463: debug3("command returned status %d", WEXITSTATUS(status));
464: return WEXITSTATUS(status);
465: }
466:
467: /*
468: * Parse and execute a Match directive.
469: */
470: static int
471: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.221 ! djm 472: const char *host_arg, const char *original_host, int post_canon,
! 473: const char *filename, int linenum)
1.206 djm 474: {
1.221 ! djm 475: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 476: const char *ruser;
1.221 ! djm 477: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 478: size_t len;
479: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
480:
481: /*
482: * Configuration is likely to be incomplete at this point so we
483: * must be prepared to use default values.
484: */
485: port = options->port <= 0 ? default_ssh_port() : options->port;
486: ruser = options->user == NULL ? pw->pw_name : options->user;
1.211 djm 487: if (options->hostname != NULL) {
1.212 djm 488: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 489: host = percent_expand(options->hostname,
490: "h", host_arg, (char *)NULL);
491: } else
492: host = xstrdup(host_arg);
1.206 djm 493:
1.221 ! djm 494: debug2("checking match for '%s' host %s originally %s",
! 495: cp, host, original_host);
! 496: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
! 497: criteria = NULL;
! 498: this_result = 1;
! 499: if ((negate = attrib[0] == '!'))
! 500: attrib++;
! 501: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 502: if (strcasecmp(attrib, "all") == 0) {
1.221 ! djm 503: if (attributes > 1 ||
1.213 dtucker 504: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 ! djm 505: error("%.200s line %d: '%s' cannot be combined "
! 506: "with other Match attributes",
! 507: filename, linenum, oattrib);
1.213 dtucker 508: result = -1;
509: goto out;
510: }
1.221 ! djm 511: if (result)
! 512: result = negate ? 0 : 1;
1.213 dtucker 513: goto out;
514: }
1.221 ! djm 515: attributes++;
! 516: if (strcasecmp(attrib, "canonical") == 0) {
! 517: r = !!post_canon; /* force bitmask member to boolean */
! 518: if (r == (negate ? 1 : 0))
! 519: this_result = result = 0;
! 520: debug3("%.200s line %d: %smatched '%s'",
! 521: filename, linenum,
! 522: this_result ? "" : "not ", oattrib);
! 523: continue;
! 524: }
! 525: /* All other criteria require an argument */
1.206 djm 526: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
527: error("Missing Match criteria for %s", attrib);
1.211 djm 528: result = -1;
529: goto out;
1.206 djm 530: }
531: len = strlen(arg);
532: if (strcasecmp(attrib, "host") == 0) {
1.221 ! djm 533: criteria = xstrdup(host);
! 534: r = match_hostname(host, arg, len) == 1;
! 535: if (r == (negate ? 1 : 0))
! 536: this_result = result = 0;
1.206 djm 537: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 ! djm 538: criteria = xstrdup(original_host);
! 539: r = match_hostname(original_host, arg, len) == 1;
! 540: if (r == (negate ? 1 : 0))
! 541: this_result = result = 0;
1.206 djm 542: } else if (strcasecmp(attrib, "user") == 0) {
1.221 ! djm 543: criteria = xstrdup(ruser);
! 544: r = match_pattern_list(ruser, arg, len, 0) == 1;
! 545: if (r == (negate ? 1 : 0))
! 546: this_result = result = 0;
1.206 djm 547: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 ! djm 548: criteria = xstrdup(pw->pw_name);
! 549: r = match_pattern_list(pw->pw_name, arg, len, 0) == 1;
! 550: if (r == (negate ? 1 : 0))
! 551: this_result = result = 0;
1.210 djm 552: } else if (strcasecmp(attrib, "exec") == 0) {
1.206 djm 553: if (gethostname(thishost, sizeof(thishost)) == -1)
554: fatal("gethostname: %s", strerror(errno));
555: strlcpy(shorthost, thishost, sizeof(shorthost));
556: shorthost[strcspn(thishost, ".")] = '\0';
557: snprintf(portstr, sizeof(portstr), "%d", port);
558:
559: cmd = percent_expand(arg,
560: "L", shorthost,
561: "d", pw->pw_dir,
562: "h", host,
563: "l", thishost,
1.221 ! djm 564: "n", original_host,
1.206 djm 565: "p", portstr,
566: "r", ruser,
567: "u", pw->pw_name,
568: (char *)NULL);
1.217 djm 569: if (result != 1) {
570: /* skip execution if prior predicate failed */
1.221 ! djm 571: debug3("%.200s line %d: skipped exec "
! 572: "\"%.100s\"", filename, linenum, cmd);
! 573: free(cmd);
! 574: continue;
! 575: }
! 576: r = execute_in_shell(cmd);
! 577: if (r == -1) {
! 578: fatal("%.200s line %d: match exec "
! 579: "'%.100s' error", filename,
! 580: linenum, cmd);
1.217 djm 581: }
1.221 ! djm 582: criteria = xstrdup(cmd);
1.206 djm 583: free(cmd);
1.221 ! djm 584: /* Force exit status to boolean */
! 585: r = r == 0;
! 586: if (r == (negate ? 1 : 0))
! 587: this_result = result = 0;
1.206 djm 588: } else {
589: error("Unsupported Match attribute %s", attrib);
1.211 djm 590: result = -1;
591: goto out;
1.206 djm 592: }
1.221 ! djm 593: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
! 594: filename, linenum, this_result ? "": "not ",
! 595: oattrib, criteria);
! 596: free(criteria);
1.213 dtucker 597: }
598: if (attributes == 0) {
599: error("One or more attributes required for Match");
600: result = -1;
601: goto out;
1.206 djm 602: }
1.221 ! djm 603: out:
! 604: if (result != -1)
! 605: debug2("match %sfound", result ? "" : "not ");
1.206 djm 606: *condition = cp;
1.211 djm 607: free(host);
1.206 djm 608: return result;
609: }
610:
1.208 djm 611: /* Check and prepare a domain name: removes trailing '.' and lowercases */
612: static void
613: valid_domain(char *name, const char *filename, int linenum)
614: {
615: size_t i, l = strlen(name);
616: u_char c, last = '\0';
617:
618: if (l == 0)
619: fatal("%s line %d: empty hostname suffix", filename, linenum);
620: if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0]))
621: fatal("%s line %d: hostname suffix \"%.100s\" "
622: "starts with invalid character", filename, linenum, name);
623: for (i = 0; i < l; i++) {
624: c = tolower((u_char)name[i]);
625: name[i] = (char)c;
626: if (last == '.' && c == '.')
627: fatal("%s line %d: hostname suffix \"%.100s\" contains "
628: "consecutive separators", filename, linenum, name);
629: if (c != '.' && c != '-' && !isalnum(c) &&
630: c != '_') /* technically invalid, but common */
631: fatal("%s line %d: hostname suffix \"%.100s\" contains "
632: "invalid characters", filename, linenum, name);
633: last = c;
634: }
635: if (name[l - 1] == '.')
636: name[l - 1] = '\0';
637: }
638:
1.19 markus 639: /*
1.70 stevesk 640: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 641: */
1.26 markus 642: static OpCodes
1.199 djm 643: parse_token(const char *cp, const char *filename, int linenum,
644: const char *ignored_unknown)
1.1 deraadt 645: {
1.199 djm 646: int i;
1.1 deraadt 647:
1.17 markus 648: for (i = 0; keywords[i].name; i++)
1.199 djm 649: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 650: return keywords[i].opcode;
1.199 djm 651: if (ignored_unknown != NULL && match_pattern_list(cp, ignored_unknown,
652: strlen(ignored_unknown), 1) == 1)
653: return oIgnoredUnknownOption;
1.75 stevesk 654: error("%s: line %d: Bad configuration option: %s",
655: filename, linenum, cp);
1.17 markus 656: return oBadOption;
1.1 deraadt 657: }
658:
1.207 djm 659: /* Multistate option parsing */
660: struct multistate {
661: char *key;
662: int value;
663: };
664: static const struct multistate multistate_flag[] = {
665: { "true", 1 },
666: { "false", 0 },
667: { "yes", 1 },
668: { "no", 0 },
669: { NULL, -1 }
670: };
671: static const struct multistate multistate_yesnoask[] = {
672: { "true", 1 },
673: { "false", 0 },
674: { "yes", 1 },
675: { "no", 0 },
676: { "ask", 2 },
677: { NULL, -1 }
678: };
679: static const struct multistate multistate_addressfamily[] = {
680: { "inet", AF_INET },
681: { "inet6", AF_INET6 },
682: { "any", AF_UNSPEC },
683: { NULL, -1 }
684: };
685: static const struct multistate multistate_controlmaster[] = {
686: { "true", SSHCTL_MASTER_YES },
687: { "yes", SSHCTL_MASTER_YES },
688: { "false", SSHCTL_MASTER_NO },
689: { "no", SSHCTL_MASTER_NO },
690: { "auto", SSHCTL_MASTER_AUTO },
691: { "ask", SSHCTL_MASTER_ASK },
692: { "autoask", SSHCTL_MASTER_AUTO_ASK },
693: { NULL, -1 }
694: };
695: static const struct multistate multistate_tunnel[] = {
696: { "ethernet", SSH_TUNMODE_ETHERNET },
697: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
698: { "true", SSH_TUNMODE_DEFAULT },
699: { "yes", SSH_TUNMODE_DEFAULT },
700: { "false", SSH_TUNMODE_NO },
701: { "no", SSH_TUNMODE_NO },
702: { NULL, -1 }
703: };
704: static const struct multistate multistate_requesttty[] = {
705: { "true", REQUEST_TTY_YES },
706: { "yes", REQUEST_TTY_YES },
707: { "false", REQUEST_TTY_NO },
708: { "no", REQUEST_TTY_NO },
709: { "force", REQUEST_TTY_FORCE },
710: { "auto", REQUEST_TTY_AUTO },
711: { NULL, -1 }
712: };
1.209 djm 713: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 714: { "true", SSH_CANONICALISE_YES },
715: { "false", SSH_CANONICALISE_NO },
716: { "yes", SSH_CANONICALISE_YES },
717: { "no", SSH_CANONICALISE_NO },
718: { "always", SSH_CANONICALISE_ALWAYS },
719: { NULL, -1 }
720: };
1.207 djm 721:
1.19 markus 722: /*
723: * Processes a single option line as used in the configuration files. This
724: * only sets those values that have not already been set.
725: */
1.102 markus 726: #define WHITESPACE " \t\r\n"
1.14 markus 727: int
1.206 djm 728: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 ! djm 729: const char *original_host, char *line, const char *filename,
! 730: int linenum, int *activep, int flags)
1.1 deraadt 731: {
1.193 djm 732: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
733: char **cpptr, fwdarg[256];
1.199 djm 734: u_int i, *uintptr, max_entries = 0;
1.206 djm 735: int negated, opcode, *intptr, value, value2, cmdline = 0;
1.164 dtucker 736: LogLevel *log_level_ptr;
1.201 dtucker 737: long long val64;
1.102 markus 738: size_t len;
1.220 millert 739: struct Forward fwd;
1.207 djm 740: const struct multistate *multistate_ptr;
1.208 djm 741: struct allowed_cname *cname;
1.106 djm 742:
1.206 djm 743: if (activep == NULL) { /* We are processing a command line directive */
744: cmdline = 1;
745: activep = &cmdline;
746: }
747:
1.106 djm 748: /* Strip trailing whitespace */
1.139 deraadt 749: for (len = strlen(line) - 1; len > 0; len--) {
1.106 djm 750: if (strchr(WHITESPACE, line[len]) == NULL)
751: break;
752: line[len] = '\0';
753: }
1.1 deraadt 754:
1.42 provos 755: s = line;
756: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 757: if ((keyword = strdelim(&s)) == NULL)
758: return 0;
1.42 provos 759: /* Ignore leading whitespace. */
760: if (*keyword == '\0')
1.43 markus 761: keyword = strdelim(&s);
1.56 deraadt 762: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 763: return 0;
1.199 djm 764: /* Match lowercase keyword */
1.207 djm 765: lowercase(keyword);
1.17 markus 766:
1.199 djm 767: opcode = parse_token(keyword, filename, linenum,
768: options->ignored_unknown);
1.17 markus 769:
770: switch (opcode) {
771: case oBadOption:
1.19 markus 772: /* don't panic, but count bad options */
773: return -1;
1.17 markus 774: /* NOTREACHED */
1.199 djm 775: case oIgnoredUnknownOption:
776: debug("%s line %d: Ignored unknown option \"%s\"",
777: filename, linenum, keyword);
778: return 0;
1.111 djm 779: case oConnectTimeout:
780: intptr = &options->connection_timeout;
1.127 markus 781: parse_time:
1.111 djm 782: arg = strdelim(&s);
783: if (!arg || *arg == '\0')
784: fatal("%s line %d: missing time value.",
785: filename, linenum);
1.221 ! djm 786: if (strcmp(arg, "none") == 0)
! 787: value = -1;
! 788: else if ((value = convtime(arg)) == -1)
1.111 djm 789: fatal("%s line %d: invalid time value.",
790: filename, linenum);
1.160 dtucker 791: if (*activep && *intptr == -1)
1.111 djm 792: *intptr = value;
793: break;
794:
1.17 markus 795: case oForwardAgent:
796: intptr = &options->forward_agent;
1.207 djm 797: parse_flag:
798: multistate_ptr = multistate_flag;
799: parse_multistate:
1.42 provos 800: arg = strdelim(&s);
1.40 ho 801: if (!arg || *arg == '\0')
1.207 djm 802: fatal("%s line %d: missing argument.",
803: filename, linenum);
804: value = -1;
805: for (i = 0; multistate_ptr[i].key != NULL; i++) {
806: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
807: value = multistate_ptr[i].value;
808: break;
809: }
810: }
811: if (value == -1)
812: fatal("%s line %d: unsupported option \"%s\".",
813: filename, linenum, arg);
1.17 markus 814: if (*activep && *intptr == -1)
815: *intptr = value;
816: break;
817:
818: case oForwardX11:
819: intptr = &options->forward_x11;
820: goto parse_flag;
821:
1.123 markus 822: case oForwardX11Trusted:
823: intptr = &options->forward_x11_trusted;
824: goto parse_flag;
1.221 ! djm 825:
1.186 djm 826: case oForwardX11Timeout:
827: intptr = &options->forward_x11_timeout;
828: goto parse_time;
1.123 markus 829:
1.17 markus 830: case oGatewayPorts:
1.220 millert 831: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 832: goto parse_flag;
833:
1.153 markus 834: case oExitOnForwardFailure:
835: intptr = &options->exit_on_forward_failure;
836: goto parse_flag;
837:
1.17 markus 838: case oUsePrivilegedPort:
839: intptr = &options->use_privileged_port;
840: goto parse_flag;
841:
842: case oPasswordAuthentication:
843: intptr = &options->password_authentication;
844: goto parse_flag;
845:
1.48 markus 846: case oKbdInteractiveAuthentication:
847: intptr = &options->kbd_interactive_authentication;
848: goto parse_flag;
849:
850: case oKbdInteractiveDevices:
851: charptr = &options->kbd_interactive_devices;
852: goto parse_string;
853:
1.50 markus 854: case oPubkeyAuthentication:
855: intptr = &options->pubkey_authentication;
1.30 markus 856: goto parse_flag;
857:
1.17 markus 858: case oRSAAuthentication:
859: intptr = &options->rsa_authentication;
860: goto parse_flag;
861:
862: case oRhostsRSAAuthentication:
863: intptr = &options->rhosts_rsa_authentication;
864: goto parse_flag;
865:
1.72 markus 866: case oHostbasedAuthentication:
867: intptr = &options->hostbased_authentication;
868: goto parse_flag;
869:
1.59 markus 870: case oChallengeResponseAuthentication:
1.78 markus 871: intptr = &options->challenge_response_authentication;
1.17 markus 872: goto parse_flag;
1.108 jakob 873:
1.118 markus 874: case oGssAuthentication:
875: intptr = &options->gss_authentication;
876: goto parse_flag;
877:
878: case oGssDelegateCreds:
879: intptr = &options->gss_deleg_creds;
880: goto parse_flag;
881:
1.17 markus 882: case oBatchMode:
883: intptr = &options->batch_mode;
884: goto parse_flag;
885:
886: case oCheckHostIP:
887: intptr = &options->check_host_ip;
1.167 grunk 888: goto parse_flag;
1.17 markus 889:
1.107 jakob 890: case oVerifyHostKeyDNS:
891: intptr = &options->verify_host_key_dns;
1.207 djm 892: multistate_ptr = multistate_yesnoask;
893: goto parse_multistate;
1.107 jakob 894:
1.17 markus 895: case oStrictHostKeyChecking:
896: intptr = &options->strict_host_key_checking;
1.207 djm 897: multistate_ptr = multistate_yesnoask;
898: goto parse_multistate;
1.17 markus 899:
900: case oCompression:
901: intptr = &options->compression;
902: goto parse_flag;
903:
1.126 markus 904: case oTCPKeepAlive:
905: intptr = &options->tcp_keep_alive;
1.17 markus 906: goto parse_flag;
907:
1.91 markus 908: case oNoHostAuthenticationForLocalhost:
909: intptr = &options->no_host_authentication_for_localhost;
910: goto parse_flag;
911:
1.17 markus 912: case oNumberOfPasswordPrompts:
913: intptr = &options->number_of_password_prompts;
914: goto parse_int;
915:
916: case oCompressionLevel:
917: intptr = &options->compression_level;
918: goto parse_int;
919:
1.105 markus 920: case oRekeyLimit:
921: arg = strdelim(&s);
922: if (!arg || *arg == '\0')
1.198 dtucker 923: fatal("%.200s line %d: Missing argument.", filename,
924: linenum);
925: if (strcmp(arg, "default") == 0) {
926: val64 = 0;
927: } else {
1.200 dtucker 928: if (scan_scaled(arg, &val64) == -1)
929: fatal("%.200s line %d: Bad number '%s': %s",
930: filename, linenum, arg, strerror(errno));
931: /* check for too-large or too-small limits */
932: if (val64 > UINT_MAX)
1.198 dtucker 933: fatal("%.200s line %d: RekeyLimit too large",
934: filename, linenum);
935: if (val64 != 0 && val64 < 16)
936: fatal("%.200s line %d: RekeyLimit too small",
937: filename, linenum);
1.105 markus 938: }
1.165 djm 939: if (*activep && options->rekey_limit == -1)
940: options->rekey_limit = (u_int32_t)val64;
1.198 dtucker 941: if (s != NULL) { /* optional rekey interval present */
942: if (strcmp(s, "none") == 0) {
943: (void)strdelim(&s); /* discard */
944: break;
945: }
946: intptr = &options->rekey_interval;
947: goto parse_time;
948: }
1.105 markus 949: break;
950:
1.17 markus 951: case oIdentityFile:
1.42 provos 952: arg = strdelim(&s);
1.40 ho 953: if (!arg || *arg == '\0')
1.17 markus 954: fatal("%.200s line %d: Missing argument.", filename, linenum);
955: if (*activep) {
1.50 markus 956: intptr = &options->num_identity_files;
1.27 markus 957: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 958: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 959: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 ! djm 960: add_identity_file(options, NULL,
! 961: arg, flags & SSHCONF_USERCONF);
1.17 markus 962: }
963: break;
964:
1.34 markus 965: case oXAuthLocation:
966: charptr=&options->xauth_location;
967: goto parse_string;
968:
1.17 markus 969: case oUser:
970: charptr = &options->user;
971: parse_string:
1.42 provos 972: arg = strdelim(&s);
1.40 ho 973: if (!arg || *arg == '\0')
1.193 djm 974: fatal("%.200s line %d: Missing argument.",
975: filename, linenum);
1.17 markus 976: if (*activep && *charptr == NULL)
1.38 provos 977: *charptr = xstrdup(arg);
1.17 markus 978: break;
979:
980: case oGlobalKnownHostsFile:
1.193 djm 981: cpptr = (char **)&options->system_hostfiles;
982: uintptr = &options->num_system_hostfiles;
983: max_entries = SSH_MAX_HOSTS_FILES;
984: parse_char_array:
985: if (*activep && *uintptr == 0) {
986: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
987: if ((*uintptr) >= max_entries)
988: fatal("%s line %d: "
989: "too many authorized keys files.",
990: filename, linenum);
991: cpptr[(*uintptr)++] = xstrdup(arg);
992: }
993: }
994: return 0;
1.17 markus 995:
996: case oUserKnownHostsFile:
1.193 djm 997: cpptr = (char **)&options->user_hostfiles;
998: uintptr = &options->num_user_hostfiles;
999: max_entries = SSH_MAX_HOSTS_FILES;
1000: goto parse_char_array;
1.27 markus 1001:
1.17 markus 1002: case oHostName:
1003: charptr = &options->hostname;
1004: goto parse_string;
1005:
1.52 markus 1006: case oHostKeyAlias:
1007: charptr = &options->host_key_alias;
1008: goto parse_string;
1009:
1.67 markus 1010: case oPreferredAuthentications:
1011: charptr = &options->preferred_authentications;
1012: goto parse_string;
1013:
1.77 markus 1014: case oBindAddress:
1015: charptr = &options->bind_address;
1016: goto parse_string;
1017:
1.183 markus 1018: case oPKCS11Provider:
1019: charptr = &options->pkcs11_provider;
1.86 markus 1020: goto parse_string;
1.85 jakob 1021:
1.17 markus 1022: case oProxyCommand:
1.144 reyk 1023: charptr = &options->proxy_command;
1024: parse_command:
1.113 markus 1025: if (s == NULL)
1026: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1027: len = strspn(s, WHITESPACE "=");
1.17 markus 1028: if (*activep && *charptr == NULL)
1.102 markus 1029: *charptr = xstrdup(s + len);
1.17 markus 1030: return 0;
1031:
1032: case oPort:
1033: intptr = &options->port;
1034: parse_int:
1.42 provos 1035: arg = strdelim(&s);
1.40 ho 1036: if (!arg || *arg == '\0')
1.17 markus 1037: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1038: if (arg[0] < '0' || arg[0] > '9')
1.17 markus 1039: fatal("%.200s line %d: Bad number.", filename, linenum);
1.21 markus 1040:
1041: /* Octal, decimal, or hex format? */
1.38 provos 1042: value = strtol(arg, &endofnumber, 0);
1043: if (arg == endofnumber)
1.21 markus 1044: fatal("%.200s line %d: Bad number.", filename, linenum);
1.17 markus 1045: if (*activep && *intptr == -1)
1046: *intptr = value;
1047: break;
1048:
1049: case oConnectionAttempts:
1050: intptr = &options->connection_attempts;
1051: goto parse_int;
1052:
1053: case oCipher:
1054: intptr = &options->cipher;
1.42 provos 1055: arg = strdelim(&s);
1.40 ho 1056: if (!arg || *arg == '\0')
1.32 markus 1057: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1058: value = cipher_number(arg);
1.17 markus 1059: if (value == -1)
1060: fatal("%.200s line %d: Bad cipher '%s'.",
1.93 deraadt 1061: filename, linenum, arg ? arg : "<NONE>");
1.17 markus 1062: if (*activep && *intptr == -1)
1063: *intptr = value;
1064: break;
1065:
1.25 markus 1066: case oCiphers:
1.42 provos 1067: arg = strdelim(&s);
1.40 ho 1068: if (!arg || *arg == '\0')
1.32 markus 1069: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1070: if (!ciphers_valid(arg))
1.31 markus 1071: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1072: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1073: if (*activep && options->ciphers == NULL)
1.38 provos 1074: options->ciphers = xstrdup(arg);
1.25 markus 1075: break;
1076:
1.62 markus 1077: case oMacs:
1078: arg = strdelim(&s);
1079: if (!arg || *arg == '\0')
1080: fatal("%.200s line %d: Missing argument.", filename, linenum);
1081: if (!mac_valid(arg))
1082: fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
1.93 deraadt 1083: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1084: if (*activep && options->macs == NULL)
1085: options->macs = xstrdup(arg);
1086: break;
1087:
1.189 djm 1088: case oKexAlgorithms:
1089: arg = strdelim(&s);
1090: if (!arg || *arg == '\0')
1091: fatal("%.200s line %d: Missing argument.",
1092: filename, linenum);
1093: if (!kex_names_valid(arg))
1094: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1095: filename, linenum, arg ? arg : "<NONE>");
1096: if (*activep && options->kex_algorithms == NULL)
1097: options->kex_algorithms = xstrdup(arg);
1098: break;
1099:
1.76 markus 1100: case oHostKeyAlgorithms:
1101: arg = strdelim(&s);
1102: if (!arg || *arg == '\0')
1103: fatal("%.200s line %d: Missing argument.", filename, linenum);
1104: if (!key_names_valid2(arg))
1105: fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.",
1.93 deraadt 1106: filename, linenum, arg ? arg : "<NONE>");
1.76 markus 1107: if (*activep && options->hostkeyalgorithms == NULL)
1108: options->hostkeyalgorithms = xstrdup(arg);
1109: break;
1110:
1.25 markus 1111: case oProtocol:
1112: intptr = &options->protocol;
1.42 provos 1113: arg = strdelim(&s);
1.40 ho 1114: if (!arg || *arg == '\0')
1.32 markus 1115: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1116: value = proto_spec(arg);
1.25 markus 1117: if (value == SSH_PROTO_UNKNOWN)
1118: fatal("%.200s line %d: Bad protocol spec '%s'.",
1.93 deraadt 1119: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1120: if (*activep && *intptr == SSH_PROTO_UNKNOWN)
1121: *intptr = value;
1122: break;
1123:
1.17 markus 1124: case oLogLevel:
1.164 dtucker 1125: log_level_ptr = &options->log_level;
1.42 provos 1126: arg = strdelim(&s);
1.38 provos 1127: value = log_level_number(arg);
1.95 markus 1128: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1129: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1130: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1131: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1132: *log_level_ptr = (LogLevel) value;
1.17 markus 1133: break;
1134:
1.88 stevesk 1135: case oLocalForward:
1.17 markus 1136: case oRemoteForward:
1.168 stevesk 1137: case oDynamicForward:
1.42 provos 1138: arg = strdelim(&s);
1.135 djm 1139: if (arg == NULL || *arg == '\0')
1.88 stevesk 1140: fatal("%.200s line %d: Missing port argument.",
1141: filename, linenum);
1.135 djm 1142:
1.168 stevesk 1143: if (opcode == oLocalForward ||
1144: opcode == oRemoteForward) {
1145: arg2 = strdelim(&s);
1146: if (arg2 == NULL || *arg2 == '\0')
1147: fatal("%.200s line %d: Missing target argument.",
1148: filename, linenum);
1.135 djm 1149:
1.168 stevesk 1150: /* construct a string for parse_forward */
1151: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
1152: } else if (opcode == oDynamicForward) {
1153: strlcpy(fwdarg, arg, sizeof(fwdarg));
1154: }
1155:
1156: if (parse_forward(&fwd, fwdarg,
1.176 djm 1157: opcode == oDynamicForward ? 1 : 0,
1158: opcode == oRemoteForward ? 1 : 0) == 0)
1.88 stevesk 1159: fatal("%.200s line %d: Bad forwarding specification.",
1160: filename, linenum);
1.135 djm 1161:
1.88 stevesk 1162: if (*activep) {
1.168 stevesk 1163: if (opcode == oLocalForward ||
1164: opcode == oDynamicForward)
1.135 djm 1165: add_local_forward(options, &fwd);
1.88 stevesk 1166: else if (opcode == oRemoteForward)
1.135 djm 1167: add_remote_forward(options, &fwd);
1.88 stevesk 1168: }
1.17 markus 1169: break;
1.71 markus 1170:
1.90 stevesk 1171: case oClearAllForwardings:
1172: intptr = &options->clear_forwardings;
1173: goto parse_flag;
1174:
1.17 markus 1175: case oHost:
1.206 djm 1176: if (cmdline)
1177: fatal("Host directive not supported as a command-line "
1178: "option");
1.17 markus 1179: *activep = 0;
1.191 djm 1180: arg2 = NULL;
1181: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1182: negated = *arg == '!';
1183: if (negated)
1184: arg++;
1.38 provos 1185: if (match_pattern(host, arg)) {
1.191 djm 1186: if (negated) {
1187: debug("%.200s line %d: Skipping Host "
1188: "block because of negated match "
1189: "for %.100s", filename, linenum,
1190: arg);
1191: *activep = 0;
1192: break;
1193: }
1194: if (!*activep)
1195: arg2 = arg; /* logged below */
1.17 markus 1196: *activep = 1;
1197: }
1.191 djm 1198: }
1199: if (*activep)
1200: debug("%.200s line %d: Applying options for %.100s",
1201: filename, linenum, arg2);
1.42 provos 1202: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1203: return 0;
1204:
1.206 djm 1205: case oMatch:
1206: if (cmdline)
1207: fatal("Host directive not supported as a command-line "
1208: "option");
1.221 ! djm 1209: value = match_cfg_line(options, &s, pw, host, original_host,
! 1210: flags & SSHCONF_POSTCANON, filename, linenum);
1.206 djm 1211: if (value < 0)
1212: fatal("%.200s line %d: Bad Match condition", filename,
1213: linenum);
1214: *activep = value;
1215: break;
1216:
1.17 markus 1217: case oEscapeChar:
1218: intptr = &options->escape_char;
1.42 provos 1219: arg = strdelim(&s);
1.40 ho 1220: if (!arg || *arg == '\0')
1.17 markus 1221: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1222: if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1223: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1224: value = (u_char) arg[1] & 31;
1.38 provos 1225: else if (strlen(arg) == 1)
1.51 markus 1226: value = (u_char) arg[0];
1.38 provos 1227: else if (strcmp(arg, "none") == 0)
1.79 stevesk 1228: value = SSH_ESCAPECHAR_NONE;
1.17 markus 1229: else {
1230: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1231: filename, linenum);
1.17 markus 1232: /* NOTREACHED */
1233: value = 0; /* Avoid compiler warning. */
1234: }
1235: if (*activep && *intptr == -1)
1236: *intptr = value;
1.112 djm 1237: break;
1238:
1239: case oAddressFamily:
1.114 djm 1240: intptr = &options->address_family;
1.207 djm 1241: multistate_ptr = multistate_addressfamily;
1242: goto parse_multistate;
1.17 markus 1243:
1.101 markus 1244: case oEnableSSHKeysign:
1245: intptr = &options->enable_ssh_keysign;
1246: goto parse_flag;
1247:
1.128 markus 1248: case oIdentitiesOnly:
1249: intptr = &options->identities_only;
1250: goto parse_flag;
1251:
1.127 markus 1252: case oServerAliveInterval:
1253: intptr = &options->server_alive_interval;
1254: goto parse_time;
1255:
1256: case oServerAliveCountMax:
1257: intptr = &options->server_alive_count_max;
1258: goto parse_int;
1259:
1.130 djm 1260: case oSendEnv:
1261: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1262: if (strchr(arg, '=') != NULL)
1263: fatal("%s line %d: Invalid environment name.",
1264: filename, linenum);
1.137 djm 1265: if (!*activep)
1266: continue;
1.130 djm 1267: if (options->num_send_env >= MAX_SEND_ENV)
1268: fatal("%s line %d: too many send env.",
1269: filename, linenum);
1270: options->send_env[options->num_send_env++] =
1271: xstrdup(arg);
1272: }
1273: break;
1274:
1.132 djm 1275: case oControlPath:
1276: charptr = &options->control_path;
1277: goto parse_string;
1278:
1279: case oControlMaster:
1280: intptr = &options->control_master;
1.207 djm 1281: multistate_ptr = multistate_controlmaster;
1282: goto parse_multistate;
1.132 djm 1283:
1.187 djm 1284: case oControlPersist:
1285: /* no/false/yes/true, or a time spec */
1286: intptr = &options->control_persist;
1287: arg = strdelim(&s);
1288: if (!arg || *arg == '\0')
1289: fatal("%.200s line %d: Missing ControlPersist"
1290: " argument.", filename, linenum);
1291: value = 0;
1292: value2 = 0; /* timeout */
1293: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1294: value = 0;
1295: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1296: value = 1;
1297: else if ((value2 = convtime(arg)) >= 0)
1298: value = 1;
1299: else
1300: fatal("%.200s line %d: Bad ControlPersist argument.",
1301: filename, linenum);
1302: if (*activep && *intptr == -1) {
1303: *intptr = value;
1304: options->control_persist_timeout = value2;
1305: }
1306: break;
1307:
1.136 djm 1308: case oHashKnownHosts:
1309: intptr = &options->hash_known_hosts;
1310: goto parse_flag;
1311:
1.144 reyk 1312: case oTunnel:
1313: intptr = &options->tun_open;
1.207 djm 1314: multistate_ptr = multistate_tunnel;
1315: goto parse_multistate;
1.144 reyk 1316:
1317: case oTunnelDevice:
1318: arg = strdelim(&s);
1319: if (!arg || *arg == '\0')
1320: fatal("%.200s line %d: Missing argument.", filename, linenum);
1321: value = a2tun(arg, &value2);
1.145 reyk 1322: if (value == SSH_TUNID_ERR)
1.144 reyk 1323: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1324: if (*activep) {
1325: options->tun_local = value;
1326: options->tun_remote = value2;
1327: }
1328: break;
1329:
1330: case oLocalCommand:
1331: charptr = &options->local_command;
1332: goto parse_command;
1333:
1334: case oPermitLocalCommand:
1335: intptr = &options->permit_local_command;
1336: goto parse_flag;
1337:
1.167 grunk 1338: case oVisualHostKey:
1339: intptr = &options->visual_host_key;
1340: goto parse_flag;
1341:
1.190 djm 1342: case oIPQoS:
1343: arg = strdelim(&s);
1344: if ((value = parse_ipqos(arg)) == -1)
1345: fatal("%s line %d: Bad IPQoS value: %s",
1346: filename, linenum, arg);
1347: arg = strdelim(&s);
1348: if (arg == NULL)
1349: value2 = value;
1350: else if ((value2 = parse_ipqos(arg)) == -1)
1351: fatal("%s line %d: Bad IPQoS value: %s",
1352: filename, linenum, arg);
1353: if (*activep) {
1354: options->ip_qos_interactive = value;
1355: options->ip_qos_bulk = value2;
1356: }
1357: break;
1358:
1.177 andreas 1359: case oUseRoaming:
1360: intptr = &options->use_roaming;
1361: goto parse_flag;
1362:
1.192 djm 1363: case oRequestTTY:
1364: intptr = &options->request_tty;
1.207 djm 1365: multistate_ptr = multistate_requesttty;
1366: goto parse_multistate;
1.192 djm 1367:
1.199 djm 1368: case oIgnoreUnknown:
1369: charptr = &options->ignored_unknown;
1370: goto parse_string;
1371:
1.205 djm 1372: case oProxyUseFdpass:
1373: intptr = &options->proxy_use_fdpass;
1374: goto parse_flag;
1375:
1.208 djm 1376: case oCanonicalDomains:
1377: value = options->num_canonical_domains != 0;
1378: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1379: valid_domain(arg, filename, linenum);
1380: if (!*activep || value)
1381: continue;
1382: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1383: fatal("%s line %d: too many hostname suffixes.",
1384: filename, linenum);
1385: options->canonical_domains[
1386: options->num_canonical_domains++] = xstrdup(arg);
1387: }
1388: break;
1389:
1.209 djm 1390: case oCanonicalizePermittedCNAMEs:
1.208 djm 1391: value = options->num_permitted_cnames != 0;
1392: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1393: /* Either '*' for everything or 'list:list' */
1394: if (strcmp(arg, "*") == 0)
1395: arg2 = arg;
1396: else {
1397: lowercase(arg);
1398: if ((arg2 = strchr(arg, ':')) == NULL ||
1399: arg2[1] == '\0') {
1400: fatal("%s line %d: "
1401: "Invalid permitted CNAME \"%s\"",
1402: filename, linenum, arg);
1403: }
1404: *arg2 = '\0';
1405: arg2++;
1406: }
1407: if (!*activep || value)
1408: continue;
1409: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1410: fatal("%s line %d: too many permitted CNAMEs.",
1411: filename, linenum);
1412: cname = options->permitted_cnames +
1413: options->num_permitted_cnames++;
1414: cname->source_list = xstrdup(arg);
1415: cname->target_list = xstrdup(arg2);
1416: }
1417: break;
1418:
1.209 djm 1419: case oCanonicalizeHostname:
1420: intptr = &options->canonicalize_hostname;
1421: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1422: goto parse_multistate;
1423:
1.209 djm 1424: case oCanonicalizeMaxDots:
1425: intptr = &options->canonicalize_max_dots;
1.208 djm 1426: goto parse_int;
1427:
1.209 djm 1428: case oCanonicalizeFallbackLocal:
1429: intptr = &options->canonicalize_fallback_local;
1.208 djm 1430: goto parse_flag;
1431:
1.220 millert 1432: case oStreamLocalBindMask:
1433: arg = strdelim(&s);
1434: if (!arg || *arg == '\0')
1435: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1436: /* Parse mode in octal format */
1437: value = strtol(arg, &endofnumber, 8);
1438: if (arg == endofnumber || value < 0 || value > 0777)
1439: fatal("%.200s line %d: Bad mask.", filename, linenum);
1440: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1441: break;
1442:
1443: case oStreamLocalBindUnlink:
1444: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1445: goto parse_flag;
1446:
1.96 markus 1447: case oDeprecated:
1.98 markus 1448: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1449: filename, linenum, keyword);
1.98 markus 1450: return 0;
1.96 markus 1451:
1.110 jakob 1452: case oUnsupported:
1453: error("%s line %d: Unsupported option \"%s\"",
1454: filename, linenum, keyword);
1455: return 0;
1456:
1.17 markus 1457: default:
1.221 ! djm 1458: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1459: }
1460:
1461: /* Check that there is no garbage at end of line. */
1.57 djm 1462: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1463: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1464: filename, linenum, arg);
1.39 ho 1465: }
1.17 markus 1466: return 0;
1.1 deraadt 1467: }
1468:
1469:
1.19 markus 1470: /*
1471: * Reads the config file and modifies the options accordingly. Options
1472: * should already be initialized before this call. This never returns if
1.89 stevesk 1473: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1474: */
1.1 deraadt 1475:
1.89 stevesk 1476: int
1.206 djm 1477: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.221 ! djm 1478: const char *original_host, Options *options, int flags)
1.1 deraadt 1479: {
1.17 markus 1480: FILE *f;
1481: char line[1024];
1482: int active, linenum;
1483: int bad_options = 0;
1484:
1.129 djm 1485: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1486: return 0;
1.129 djm 1487:
1.196 dtucker 1488: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1489: struct stat sb;
1.134 deraadt 1490:
1.131 dtucker 1491: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1492: fatal("fstat %s: %s", filename, strerror(errno));
1493: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1494: (sb.st_mode & 022) != 0))
1.129 djm 1495: fatal("Bad owner or permissions on %s", filename);
1496: }
1.17 markus 1497:
1498: debug("Reading configuration data %.200s", filename);
1499:
1.19 markus 1500: /*
1501: * Mark that we are now processing the options. This flag is turned
1502: * on/off by Host specifications.
1503: */
1.17 markus 1504: active = 1;
1505: linenum = 0;
1506: while (fgets(line, sizeof(line), f)) {
1507: /* Update line number counter. */
1508: linenum++;
1.221 ! djm 1509: if (process_config_line(options, pw, host, original_host,
! 1510: line, filename, linenum, &active, flags) != 0)
1.17 markus 1511: bad_options++;
1512: }
1513: fclose(f);
1514: if (bad_options > 0)
1.64 millert 1515: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1516: filename, bad_options);
1.89 stevesk 1517: return 1;
1.1 deraadt 1518: }
1519:
1.218 djm 1520: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1521: int
1522: option_clear_or_none(const char *o)
1523: {
1524: return o == NULL || strcasecmp(o, "none") == 0;
1525: }
1526:
1.19 markus 1527: /*
1528: * Initializes options to special values that indicate that they have not yet
1529: * been set. Read_config_file will only set options with this value. Options
1530: * are processed in the following order: command line, user config file,
1531: * system config file. Last, fill_default_options is called.
1532: */
1.1 deraadt 1533:
1.26 markus 1534: void
1.17 markus 1535: initialize_options(Options * options)
1.1 deraadt 1536: {
1.17 markus 1537: memset(options, 'X', sizeof(*options));
1538: options->forward_agent = -1;
1539: options->forward_x11 = -1;
1.123 markus 1540: options->forward_x11_trusted = -1;
1.186 djm 1541: options->forward_x11_timeout = -1;
1.153 markus 1542: options->exit_on_forward_failure = -1;
1.34 markus 1543: options->xauth_location = NULL;
1.220 millert 1544: options->fwd_opts.gateway_ports = -1;
1545: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1546: options->fwd_opts.streamlocal_bind_unlink = -1;
1.17 markus 1547: options->use_privileged_port = -1;
1548: options->rsa_authentication = -1;
1.50 markus 1549: options->pubkey_authentication = -1;
1.78 markus 1550: options->challenge_response_authentication = -1;
1.118 markus 1551: options->gss_authentication = -1;
1552: options->gss_deleg_creds = -1;
1.17 markus 1553: options->password_authentication = -1;
1.48 markus 1554: options->kbd_interactive_authentication = -1;
1555: options->kbd_interactive_devices = NULL;
1.17 markus 1556: options->rhosts_rsa_authentication = -1;
1.72 markus 1557: options->hostbased_authentication = -1;
1.17 markus 1558: options->batch_mode = -1;
1559: options->check_host_ip = -1;
1560: options->strict_host_key_checking = -1;
1561: options->compression = -1;
1.126 markus 1562: options->tcp_keep_alive = -1;
1.17 markus 1563: options->compression_level = -1;
1564: options->port = -1;
1.114 djm 1565: options->address_family = -1;
1.17 markus 1566: options->connection_attempts = -1;
1.111 djm 1567: options->connection_timeout = -1;
1.17 markus 1568: options->number_of_password_prompts = -1;
1569: options->cipher = -1;
1.25 markus 1570: options->ciphers = NULL;
1.62 markus 1571: options->macs = NULL;
1.189 djm 1572: options->kex_algorithms = NULL;
1.76 markus 1573: options->hostkeyalgorithms = NULL;
1.25 markus 1574: options->protocol = SSH_PROTO_UNKNOWN;
1.17 markus 1575: options->num_identity_files = 0;
1576: options->hostname = NULL;
1.52 markus 1577: options->host_key_alias = NULL;
1.17 markus 1578: options->proxy_command = NULL;
1579: options->user = NULL;
1580: options->escape_char = -1;
1.193 djm 1581: options->num_system_hostfiles = 0;
1582: options->num_user_hostfiles = 0;
1.185 djm 1583: options->local_forwards = NULL;
1.17 markus 1584: options->num_local_forwards = 0;
1.185 djm 1585: options->remote_forwards = NULL;
1.17 markus 1586: options->num_remote_forwards = 0;
1.90 stevesk 1587: options->clear_forwardings = -1;
1.95 markus 1588: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1589: options->preferred_authentications = NULL;
1.77 markus 1590: options->bind_address = NULL;
1.183 markus 1591: options->pkcs11_provider = NULL;
1.101 markus 1592: options->enable_ssh_keysign = - 1;
1.91 markus 1593: options->no_host_authentication_for_localhost = - 1;
1.128 markus 1594: options->identities_only = - 1;
1.105 markus 1595: options->rekey_limit = - 1;
1.198 dtucker 1596: options->rekey_interval = -1;
1.107 jakob 1597: options->verify_host_key_dns = -1;
1.127 markus 1598: options->server_alive_interval = -1;
1599: options->server_alive_count_max = -1;
1.130 djm 1600: options->num_send_env = 0;
1.132 djm 1601: options->control_path = NULL;
1602: options->control_master = -1;
1.187 djm 1603: options->control_persist = -1;
1604: options->control_persist_timeout = 0;
1.136 djm 1605: options->hash_known_hosts = -1;
1.144 reyk 1606: options->tun_open = -1;
1607: options->tun_local = -1;
1608: options->tun_remote = -1;
1609: options->local_command = NULL;
1610: options->permit_local_command = -1;
1.177 andreas 1611: options->use_roaming = -1;
1.167 grunk 1612: options->visual_host_key = -1;
1.190 djm 1613: options->ip_qos_interactive = -1;
1614: options->ip_qos_bulk = -1;
1.192 djm 1615: options->request_tty = -1;
1.205 djm 1616: options->proxy_use_fdpass = -1;
1.199 djm 1617: options->ignored_unknown = NULL;
1.208 djm 1618: options->num_canonical_domains = 0;
1619: options->num_permitted_cnames = 0;
1.209 djm 1620: options->canonicalize_max_dots = -1;
1621: options->canonicalize_fallback_local = -1;
1622: options->canonicalize_hostname = -1;
1.1 deraadt 1623: }
1624:
1.19 markus 1625: /*
1.218 djm 1626: * A petite version of fill_default_options() that just fills the options
1627: * needed for hostname canonicalization to proceed.
1628: */
1629: void
1630: fill_default_options_for_canonicalization(Options *options)
1631: {
1632: if (options->canonicalize_max_dots == -1)
1633: options->canonicalize_max_dots = 1;
1634: if (options->canonicalize_fallback_local == -1)
1635: options->canonicalize_fallback_local = 1;
1636: if (options->canonicalize_hostname == -1)
1637: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1638: }
1639:
1640: /*
1.19 markus 1641: * Called after processing other sources of option data, this fills those
1642: * options for which no value has been specified with their default values.
1643: */
1.26 markus 1644: void
1.17 markus 1645: fill_default_options(Options * options)
1.1 deraadt 1646: {
1.17 markus 1647: if (options->forward_agent == -1)
1.33 markus 1648: options->forward_agent = 0;
1.17 markus 1649: if (options->forward_x11 == -1)
1.23 markus 1650: options->forward_x11 = 0;
1.123 markus 1651: if (options->forward_x11_trusted == -1)
1652: options->forward_x11_trusted = 0;
1.186 djm 1653: if (options->forward_x11_timeout == -1)
1654: options->forward_x11_timeout = 1200;
1.153 markus 1655: if (options->exit_on_forward_failure == -1)
1656: options->exit_on_forward_failure = 0;
1.34 markus 1657: if (options->xauth_location == NULL)
1.80 markus 1658: options->xauth_location = _PATH_XAUTH;
1.220 millert 1659: if (options->fwd_opts.gateway_ports == -1)
1660: options->fwd_opts.gateway_ports = 0;
1661: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
1662: options->fwd_opts.streamlocal_bind_mask = 0177;
1663: if (options->fwd_opts.streamlocal_bind_unlink == -1)
1664: options->fwd_opts.streamlocal_bind_unlink = 0;
1.17 markus 1665: if (options->use_privileged_port == -1)
1.65 markus 1666: options->use_privileged_port = 0;
1.17 markus 1667: if (options->rsa_authentication == -1)
1668: options->rsa_authentication = 1;
1.50 markus 1669: if (options->pubkey_authentication == -1)
1670: options->pubkey_authentication = 1;
1.78 markus 1671: if (options->challenge_response_authentication == -1)
1.83 markus 1672: options->challenge_response_authentication = 1;
1.118 markus 1673: if (options->gss_authentication == -1)
1.122 markus 1674: options->gss_authentication = 0;
1.118 markus 1675: if (options->gss_deleg_creds == -1)
1676: options->gss_deleg_creds = 0;
1.17 markus 1677: if (options->password_authentication == -1)
1678: options->password_authentication = 1;
1.48 markus 1679: if (options->kbd_interactive_authentication == -1)
1.59 markus 1680: options->kbd_interactive_authentication = 1;
1.17 markus 1681: if (options->rhosts_rsa_authentication == -1)
1.99 stevesk 1682: options->rhosts_rsa_authentication = 0;
1.72 markus 1683: if (options->hostbased_authentication == -1)
1684: options->hostbased_authentication = 0;
1.17 markus 1685: if (options->batch_mode == -1)
1686: options->batch_mode = 0;
1687: if (options->check_host_ip == -1)
1688: options->check_host_ip = 1;
1689: if (options->strict_host_key_checking == -1)
1690: options->strict_host_key_checking = 2; /* 2 is default */
1691: if (options->compression == -1)
1692: options->compression = 0;
1.126 markus 1693: if (options->tcp_keep_alive == -1)
1694: options->tcp_keep_alive = 1;
1.17 markus 1695: if (options->compression_level == -1)
1696: options->compression_level = 6;
1697: if (options->port == -1)
1698: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 1699: if (options->address_family == -1)
1700: options->address_family = AF_UNSPEC;
1.17 markus 1701: if (options->connection_attempts == -1)
1.84 markus 1702: options->connection_attempts = 1;
1.17 markus 1703: if (options->number_of_password_prompts == -1)
1704: options->number_of_password_prompts = 3;
1705: /* Selected in ssh_login(). */
1706: if (options->cipher == -1)
1707: options->cipher = SSH_CIPHER_NOT_SET;
1.31 markus 1708: /* options->ciphers, default set in myproposals.h */
1.62 markus 1709: /* options->macs, default set in myproposals.h */
1.189 djm 1710: /* options->kex_algorithms, default set in myproposals.h */
1.76 markus 1711: /* options->hostkeyalgorithms, default set in myproposals.h */
1.25 markus 1712: if (options->protocol == SSH_PROTO_UNKNOWN)
1.178 markus 1713: options->protocol = SSH_PROTO_2;
1.17 markus 1714: if (options->num_identity_files == 0) {
1.50 markus 1715: if (options->protocol & SSH_PROTO_1) {
1.195 dtucker 1716: add_identity_file(options, "~/",
1717: _PATH_SSH_CLIENT_IDENTITY, 0);
1.50 markus 1718: }
1719: if (options->protocol & SSH_PROTO_2) {
1.195 dtucker 1720: add_identity_file(options, "~/",
1721: _PATH_SSH_CLIENT_ID_RSA, 0);
1722: add_identity_file(options, "~/",
1723: _PATH_SSH_CLIENT_ID_DSA, 0);
1724: add_identity_file(options, "~/",
1725: _PATH_SSH_CLIENT_ID_ECDSA, 0);
1.215 markus 1726: add_identity_file(options, "~/",
1727: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.50 markus 1728: }
1.27 markus 1729: }
1.17 markus 1730: if (options->escape_char == -1)
1731: options->escape_char = '~';
1.193 djm 1732: if (options->num_system_hostfiles == 0) {
1733: options->system_hostfiles[options->num_system_hostfiles++] =
1734: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
1735: options->system_hostfiles[options->num_system_hostfiles++] =
1736: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
1737: }
1738: if (options->num_user_hostfiles == 0) {
1739: options->user_hostfiles[options->num_user_hostfiles++] =
1740: xstrdup(_PATH_SSH_USER_HOSTFILE);
1741: options->user_hostfiles[options->num_user_hostfiles++] =
1742: xstrdup(_PATH_SSH_USER_HOSTFILE2);
1743: }
1.95 markus 1744: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 1745: options->log_level = SYSLOG_LEVEL_INFO;
1.90 stevesk 1746: if (options->clear_forwardings == 1)
1747: clear_forwardings(options);
1.91 markus 1748: if (options->no_host_authentication_for_localhost == - 1)
1749: options->no_host_authentication_for_localhost = 0;
1.128 markus 1750: if (options->identities_only == -1)
1751: options->identities_only = 0;
1.101 markus 1752: if (options->enable_ssh_keysign == -1)
1753: options->enable_ssh_keysign = 0;
1.105 markus 1754: if (options->rekey_limit == -1)
1755: options->rekey_limit = 0;
1.198 dtucker 1756: if (options->rekey_interval == -1)
1757: options->rekey_interval = 0;
1.107 jakob 1758: if (options->verify_host_key_dns == -1)
1759: options->verify_host_key_dns = 0;
1.127 markus 1760: if (options->server_alive_interval == -1)
1761: options->server_alive_interval = 0;
1762: if (options->server_alive_count_max == -1)
1763: options->server_alive_count_max = 3;
1.132 djm 1764: if (options->control_master == -1)
1765: options->control_master = 0;
1.187 djm 1766: if (options->control_persist == -1) {
1767: options->control_persist = 0;
1768: options->control_persist_timeout = 0;
1769: }
1.136 djm 1770: if (options->hash_known_hosts == -1)
1771: options->hash_known_hosts = 0;
1.144 reyk 1772: if (options->tun_open == -1)
1.145 reyk 1773: options->tun_open = SSH_TUNMODE_NO;
1774: if (options->tun_local == -1)
1775: options->tun_local = SSH_TUNID_ANY;
1776: if (options->tun_remote == -1)
1777: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 1778: if (options->permit_local_command == -1)
1779: options->permit_local_command = 0;
1.177 andreas 1780: if (options->use_roaming == -1)
1781: options->use_roaming = 1;
1.167 grunk 1782: if (options->visual_host_key == -1)
1783: options->visual_host_key = 0;
1.190 djm 1784: if (options->ip_qos_interactive == -1)
1785: options->ip_qos_interactive = IPTOS_LOWDELAY;
1786: if (options->ip_qos_bulk == -1)
1787: options->ip_qos_bulk = IPTOS_THROUGHPUT;
1.192 djm 1788: if (options->request_tty == -1)
1789: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 1790: if (options->proxy_use_fdpass == -1)
1791: options->proxy_use_fdpass = 0;
1.209 djm 1792: if (options->canonicalize_max_dots == -1)
1793: options->canonicalize_max_dots = 1;
1794: if (options->canonicalize_fallback_local == -1)
1795: options->canonicalize_fallback_local = 1;
1796: if (options->canonicalize_hostname == -1)
1797: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.207 djm 1798: #define CLEAR_ON_NONE(v) \
1799: do { \
1.218 djm 1800: if (option_clear_or_none(v)) { \
1.207 djm 1801: free(v); \
1802: v = NULL; \
1803: } \
1804: } while(0)
1805: CLEAR_ON_NONE(options->local_command);
1806: CLEAR_ON_NONE(options->proxy_command);
1807: CLEAR_ON_NONE(options->control_path);
1.17 markus 1808: /* options->user will be set in the main program if appropriate */
1809: /* options->hostname will be set in the main program if appropriate */
1.52 markus 1810: /* options->host_key_alias should not be set by default */
1.67 markus 1811: /* options->preferred_authentications will be set in ssh */
1.135 djm 1812: }
1813:
1.220 millert 1814: struct fwdarg {
1815: char *arg;
1816: int ispath;
1817: };
1818:
1819: /*
1820: * parse_fwd_field
1821: * parses the next field in a port forwarding specification.
1822: * sets fwd to the parsed field and advances p past the colon
1823: * or sets it to NULL at end of string.
1824: * returns 0 on success, else non-zero.
1825: */
1826: static int
1827: parse_fwd_field(char **p, struct fwdarg *fwd)
1828: {
1829: char *ep, *cp = *p;
1830: int ispath = 0;
1831:
1832: if (*cp == '\0') {
1833: *p = NULL;
1834: return -1; /* end of string */
1835: }
1836:
1837: /*
1838: * A field escaped with square brackets is used literally.
1839: * XXX - allow ']' to be escaped via backslash?
1840: */
1841: if (*cp == '[') {
1842: /* find matching ']' */
1843: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
1844: if (*ep == '/')
1845: ispath = 1;
1846: }
1847: /* no matching ']' or not at end of field. */
1848: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
1849: return -1;
1850: /* NUL terminate the field and advance p past the colon */
1851: *ep++ = '\0';
1852: if (*ep != '\0')
1853: *ep++ = '\0';
1854: fwd->arg = cp + 1;
1855: fwd->ispath = ispath;
1856: *p = ep;
1857: return 0;
1858: }
1859:
1860: for (cp = *p; *cp != '\0'; cp++) {
1861: switch (*cp) {
1862: case '\\':
1863: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1864: cp++;
1865: break;
1866: case '/':
1867: ispath = 1;
1868: break;
1869: case ':':
1870: *cp++ = '\0';
1871: goto done;
1872: }
1873: }
1874: done:
1875: fwd->arg = *p;
1876: fwd->ispath = ispath;
1877: *p = cp;
1878: return 0;
1879: }
1880:
1.135 djm 1881: /*
1882: * parse_forward
1883: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 1884: * dynamicfwd == 0
1.220 millert 1885: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
1886: * listenpath:connectpath
1.168 stevesk 1887: * dynamicfwd == 1
1888: * [listenhost:]listenport
1.135 djm 1889: * returns number of arguments parsed or zero on error
1890: */
1891: int
1.220 millert 1892: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 1893: {
1.220 millert 1894: struct fwdarg fwdargs[4];
1895: char *p, *cp;
1.135 djm 1896: int i;
1897:
1.220 millert 1898: memset(fwd, 0, sizeof(*fwd));
1899: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 1900:
1901: cp = p = xstrdup(fwdspec);
1902:
1903: /* skip leading spaces */
1.214 deraadt 1904: while (isspace((u_char)*cp))
1.135 djm 1905: cp++;
1906:
1.220 millert 1907: for (i = 0; i < 4; ++i) {
1908: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 1909: break;
1.220 millert 1910: }
1.135 djm 1911:
1.170 stevesk 1912: /* Check for trailing garbage */
1.220 millert 1913: if (cp != NULL && *cp != '\0') {
1.135 djm 1914: i = 0; /* failure */
1.220 millert 1915: }
1.135 djm 1916:
1917: switch (i) {
1.168 stevesk 1918: case 1:
1.220 millert 1919: if (fwdargs[0].ispath) {
1920: fwd->listen_path = xstrdup(fwdargs[0].arg);
1921: fwd->listen_port = PORT_STREAMLOCAL;
1922: } else {
1923: fwd->listen_host = NULL;
1924: fwd->listen_port = a2port(fwdargs[0].arg);
1925: }
1.168 stevesk 1926: fwd->connect_host = xstrdup("socks");
1927: break;
1928:
1929: case 2:
1.220 millert 1930: if (fwdargs[0].ispath && fwdargs[1].ispath) {
1931: fwd->listen_path = xstrdup(fwdargs[0].arg);
1932: fwd->listen_port = PORT_STREAMLOCAL;
1933: fwd->connect_path = xstrdup(fwdargs[1].arg);
1934: fwd->connect_port = PORT_STREAMLOCAL;
1935: } else if (fwdargs[1].ispath) {
1936: fwd->listen_host = NULL;
1937: fwd->listen_port = a2port(fwdargs[0].arg);
1938: fwd->connect_path = xstrdup(fwdargs[1].arg);
1939: fwd->connect_port = PORT_STREAMLOCAL;
1940: } else {
1941: fwd->listen_host = xstrdup(fwdargs[0].arg);
1942: fwd->listen_port = a2port(fwdargs[1].arg);
1943: fwd->connect_host = xstrdup("socks");
1944: }
1.168 stevesk 1945: break;
1946:
1.135 djm 1947: case 3:
1.220 millert 1948: if (fwdargs[0].ispath) {
1949: fwd->listen_path = xstrdup(fwdargs[0].arg);
1950: fwd->listen_port = PORT_STREAMLOCAL;
1951: fwd->connect_host = xstrdup(fwdargs[1].arg);
1952: fwd->connect_port = a2port(fwdargs[2].arg);
1953: } else if (fwdargs[2].ispath) {
1954: fwd->listen_host = xstrdup(fwdargs[0].arg);
1955: fwd->listen_port = a2port(fwdargs[1].arg);
1956: fwd->connect_path = xstrdup(fwdargs[2].arg);
1957: fwd->connect_port = PORT_STREAMLOCAL;
1958: } else {
1959: fwd->listen_host = NULL;
1960: fwd->listen_port = a2port(fwdargs[0].arg);
1961: fwd->connect_host = xstrdup(fwdargs[1].arg);
1962: fwd->connect_port = a2port(fwdargs[2].arg);
1963: }
1.135 djm 1964: break;
1965:
1966: case 4:
1.220 millert 1967: fwd->listen_host = xstrdup(fwdargs[0].arg);
1968: fwd->listen_port = a2port(fwdargs[1].arg);
1969: fwd->connect_host = xstrdup(fwdargs[2].arg);
1970: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 1971: break;
1972: default:
1973: i = 0; /* failure */
1974: }
1975:
1.202 djm 1976: free(p);
1.135 djm 1977:
1.168 stevesk 1978: if (dynamicfwd) {
1979: if (!(i == 1 || i == 2))
1980: goto fail_free;
1981: } else {
1.220 millert 1982: if (!(i == 3 || i == 4)) {
1983: if (fwd->connect_path == NULL &&
1984: fwd->listen_path == NULL)
1985: goto fail_free;
1986: }
1987: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 1988: goto fail_free;
1989: }
1990:
1.220 millert 1991: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
1992: (!remotefwd && fwd->listen_port == 0))
1.135 djm 1993: goto fail_free;
1994: if (fwd->connect_host != NULL &&
1995: strlen(fwd->connect_host) >= NI_MAXHOST)
1996: goto fail_free;
1.220 millert 1997: /* XXX - if connecting to a remote socket, max sun len may not match this host */
1998: if (fwd->connect_path != NULL &&
1999: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2000: goto fail_free;
1.176 djm 2001: if (fwd->listen_host != NULL &&
2002: strlen(fwd->listen_host) >= NI_MAXHOST)
2003: goto fail_free;
1.220 millert 2004: if (fwd->listen_path != NULL &&
2005: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2006: goto fail_free;
1.135 djm 2007:
2008: return (i);
2009:
2010: fail_free:
1.202 djm 2011: free(fwd->connect_host);
2012: fwd->connect_host = NULL;
1.220 millert 2013: free(fwd->connect_path);
2014: fwd->connect_path = NULL;
1.202 djm 2015: free(fwd->listen_host);
2016: fwd->listen_host = NULL;
1.220 millert 2017: free(fwd->listen_path);
2018: fwd->listen_path = NULL;
1.135 djm 2019: return (0);
1.221 ! djm 2020: }
! 2021:
! 2022: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
! 2023: static const char *
! 2024: fmt_multistate_int(int val, const struct multistate *m)
! 2025: {
! 2026: u_int i;
! 2027:
! 2028: for (i = 0; m[i].key != NULL; i++) {
! 2029: if (m[i].value == val)
! 2030: return m[i].key;
! 2031: }
! 2032: return "UNKNOWN";
! 2033: }
! 2034:
! 2035: static const char *
! 2036: fmt_intarg(OpCodes code, int val)
! 2037: {
! 2038: if (val == -1)
! 2039: return "unset";
! 2040: switch (code) {
! 2041: case oAddressFamily:
! 2042: return fmt_multistate_int(val, multistate_addressfamily);
! 2043: case oVerifyHostKeyDNS:
! 2044: case oStrictHostKeyChecking:
! 2045: return fmt_multistate_int(val, multistate_yesnoask);
! 2046: case oControlMaster:
! 2047: return fmt_multistate_int(val, multistate_controlmaster);
! 2048: case oTunnel:
! 2049: return fmt_multistate_int(val, multistate_tunnel);
! 2050: case oRequestTTY:
! 2051: return fmt_multistate_int(val, multistate_requesttty);
! 2052: case oCanonicalizeHostname:
! 2053: return fmt_multistate_int(val, multistate_canonicalizehostname);
! 2054: case oProtocol:
! 2055: switch (val) {
! 2056: case SSH_PROTO_1:
! 2057: return "1";
! 2058: case SSH_PROTO_2:
! 2059: return "2";
! 2060: case (SSH_PROTO_1|SSH_PROTO_2):
! 2061: return "2,1";
! 2062: default:
! 2063: return "UNKNOWN";
! 2064: }
! 2065: default:
! 2066: switch (val) {
! 2067: case 0:
! 2068: return "no";
! 2069: case 1:
! 2070: return "yes";
! 2071: default:
! 2072: return "UNKNOWN";
! 2073: }
! 2074: }
! 2075: }
! 2076:
! 2077: static const char *
! 2078: lookup_opcode_name(OpCodes code)
! 2079: {
! 2080: u_int i;
! 2081:
! 2082: for (i = 0; keywords[i].name != NULL; i++)
! 2083: if (keywords[i].opcode == code)
! 2084: return(keywords[i].name);
! 2085: return "UNKNOWN";
! 2086: }
! 2087:
! 2088: static void
! 2089: dump_cfg_int(OpCodes code, int val)
! 2090: {
! 2091: printf("%s %d\n", lookup_opcode_name(code), val);
! 2092: }
! 2093:
! 2094: static void
! 2095: dump_cfg_fmtint(OpCodes code, int val)
! 2096: {
! 2097: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
! 2098: }
! 2099:
! 2100: static void
! 2101: dump_cfg_string(OpCodes code, const char *val)
! 2102: {
! 2103: if (val == NULL)
! 2104: return;
! 2105: printf("%s %s\n", lookup_opcode_name(code), val);
! 2106: }
! 2107:
! 2108: static void
! 2109: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
! 2110: {
! 2111: u_int i;
! 2112:
! 2113: for (i = 0; i < count; i++)
! 2114: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
! 2115: }
! 2116:
! 2117: static void
! 2118: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
! 2119: {
! 2120: u_int i;
! 2121:
! 2122: printf("%s", lookup_opcode_name(code));
! 2123: for (i = 0; i < count; i++)
! 2124: printf(" %s", vals[i]);
! 2125: printf("\n");
! 2126: }
! 2127:
! 2128: static void
! 2129: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
! 2130: {
! 2131: const struct Forward *fwd;
! 2132: u_int i;
! 2133:
! 2134: /* oDynamicForward */
! 2135: for (i = 0; i < count; i++) {
! 2136: fwd = &fwds[i];
! 2137: if (code == oDynamicForward &&
! 2138: strcmp(fwd->connect_host, "socks") != 0)
! 2139: continue;
! 2140: if (code == oLocalForward &&
! 2141: strcmp(fwd->connect_host, "socks") == 0)
! 2142: continue;
! 2143: printf("%s", lookup_opcode_name(code));
! 2144: if (fwd->listen_port == PORT_STREAMLOCAL)
! 2145: printf(" %s", fwd->listen_path);
! 2146: else if (fwd->listen_host == NULL)
! 2147: printf(" %d", fwd->listen_port);
! 2148: else {
! 2149: printf(" [%s]:%d",
! 2150: fwd->listen_host, fwd->listen_port);
! 2151: }
! 2152: if (code != oDynamicForward) {
! 2153: if (fwd->connect_port == PORT_STREAMLOCAL)
! 2154: printf(" %s", fwd->connect_path);
! 2155: else if (fwd->connect_host == NULL)
! 2156: printf(" %d", fwd->connect_port);
! 2157: else {
! 2158: printf(" [%s]:%d",
! 2159: fwd->connect_host, fwd->connect_port);
! 2160: }
! 2161: }
! 2162: printf("\n");
! 2163: }
! 2164: }
! 2165:
! 2166: void
! 2167: dump_client_config(Options *o, const char *host)
! 2168: {
! 2169: int i;
! 2170: char vbuf[5];
! 2171:
! 2172: /* Most interesting options first: user, host, port */
! 2173: dump_cfg_string(oUser, o->user);
! 2174: dump_cfg_string(oHostName, host);
! 2175: dump_cfg_int(oPort, o->port);
! 2176:
! 2177: /* Flag options */
! 2178: dump_cfg_fmtint(oAddressFamily, o->address_family);
! 2179: dump_cfg_fmtint(oBatchMode, o->batch_mode);
! 2180: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
! 2181: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
! 2182: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
! 2183: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
! 2184: dump_cfg_fmtint(oCompression, o->compression);
! 2185: dump_cfg_fmtint(oControlMaster, o->control_master);
! 2186: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
! 2187: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
! 2188: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
! 2189: dump_cfg_fmtint(oForwardX11, o->forward_x11);
! 2190: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
! 2191: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
! 2192: #ifdef GSSAPI
! 2193: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
! 2194: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
! 2195: #endif /* GSSAPI */
! 2196: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
! 2197: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
! 2198: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
! 2199: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
! 2200: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
! 2201: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
! 2202: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
! 2203: dump_cfg_fmtint(oProtocol, o->protocol);
! 2204: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
! 2205: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
! 2206: dump_cfg_fmtint(oRequestTTY, o->request_tty);
! 2207: dump_cfg_fmtint(oRhostsRSAAuthentication, o->rhosts_rsa_authentication);
! 2208: dump_cfg_fmtint(oRSAAuthentication, o->rsa_authentication);
! 2209: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
! 2210: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
! 2211: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
! 2212: dump_cfg_fmtint(oTunnel, o->tun_open);
! 2213: dump_cfg_fmtint(oUsePrivilegedPort, o->use_privileged_port);
! 2214: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
! 2215: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
! 2216:
! 2217: /* Integer options */
! 2218: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
! 2219: dump_cfg_int(oCompressionLevel, o->compression_level);
! 2220: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
! 2221: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
! 2222: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
! 2223: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
! 2224: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
! 2225:
! 2226: /* String options */
! 2227: dump_cfg_string(oBindAddress, o->bind_address);
! 2228: dump_cfg_string(oCiphers, o->ciphers ? o->ciphers : KEX_CLIENT_ENCRYPT);
! 2229: dump_cfg_string(oControlPath, o->control_path);
! 2230: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms ? o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
! 2231: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
! 2232: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
! 2233: dump_cfg_string(oKexAlgorithms, o->kex_algorithms ? o->kex_algorithms : KEX_CLIENT_KEX);
! 2234: dump_cfg_string(oLocalCommand, o->local_command);
! 2235: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
! 2236: dump_cfg_string(oMacs, o->macs ? o->macs : KEX_CLIENT_MAC);
! 2237: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
! 2238: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
! 2239: dump_cfg_string(oProxyCommand, o->proxy_command);
! 2240: dump_cfg_string(oXAuthLocation, o->xauth_location);
! 2241:
! 2242: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
! 2243: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
! 2244: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
! 2245:
! 2246: /* String array options */
! 2247: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
! 2248: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
! 2249: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
! 2250: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
! 2251: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
! 2252:
! 2253: /* Special cases */
! 2254:
! 2255: /* oConnectTimeout */
! 2256: if (o->connection_timeout == -1)
! 2257: printf("connecttimeout none\n");
! 2258: else
! 2259: dump_cfg_int(oConnectTimeout, o->connection_timeout);
! 2260:
! 2261: /* oTunnelDevice */
! 2262: printf("tunneldevice");
! 2263: if (o->tun_local == SSH_TUNID_ANY)
! 2264: printf(" any");
! 2265: else
! 2266: printf(" %d", o->tun_local);
! 2267: if (o->tun_remote == SSH_TUNID_ANY)
! 2268: printf(":any");
! 2269: else
! 2270: printf(":%d", o->tun_remote);
! 2271: printf("\n");
! 2272:
! 2273: /* oCanonicalizePermittedCNAMEs */
! 2274: if ( o->num_permitted_cnames > 0) {
! 2275: printf("canonicalizePermittedcnames");
! 2276: for (i = 0; i < o->num_permitted_cnames; i++) {
! 2277: printf(" %s:%s", o->permitted_cnames[i].source_list,
! 2278: o->permitted_cnames[i].target_list);
! 2279: }
! 2280: printf("\n");
! 2281: }
! 2282:
! 2283: /* oCipher */
! 2284: if (o->cipher != SSH_CIPHER_NOT_SET)
! 2285: printf("Cipher %s\n", cipher_name(o->cipher));
! 2286:
! 2287: /* oControlPersist */
! 2288: if (o->control_persist == 0 || o->control_persist_timeout == 0)
! 2289: dump_cfg_fmtint(oControlPersist, o->control_persist);
! 2290: else
! 2291: dump_cfg_int(oControlPersist, o->control_persist_timeout);
! 2292:
! 2293: /* oEscapeChar */
! 2294: if (o->escape_char == SSH_ESCAPECHAR_NONE)
! 2295: printf("escapechar none\n");
! 2296: else {
! 2297: vis(vbuf, o->escape_char, VIS_WHITE, 0);
! 2298: printf("escapechar %s\n", vbuf);
! 2299: }
! 2300:
! 2301: /* oIPQoS */
! 2302: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
! 2303: printf("%s\n", iptos2str(o->ip_qos_bulk));
! 2304:
! 2305: /* oRekeyLimit */
! 2306: printf("rekeylimit %lld %d\n",
! 2307: (long long)o->rekey_limit, o->rekey_interval);
! 2308:
! 2309: /* oStreamLocalBindMask */
! 2310: printf("streamlocalbindmask 0%o\n",
! 2311: o->fwd_opts.streamlocal_bind_mask);
1.1 deraadt 2312: }
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