Annotation of src/usr.bin/ssh/readconf.c, Revision 1.239.2.1
1.239.2.1! sthen 1: /* $OpenBSD: readconf.c,v 1.239 2015/07/30 00:01:34 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,
1.238 markus 149: oPubkeyAcceptedKeyTypes,
1.199 djm 150: oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 151: } OpCodes;
152:
153: /* Textual representations of the tokens. */
154:
1.17 markus 155: static struct {
156: const char *name;
157: OpCodes opcode;
158: } keywords[] = {
159: { "forwardagent", oForwardAgent },
160: { "forwardx11", oForwardX11 },
1.123 markus 161: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 162: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 163: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 164: { "xauthlocation", oXAuthLocation },
1.17 markus 165: { "gatewayports", oGatewayPorts },
166: { "useprivilegedport", oUsePrivilegedPort },
1.116 markus 167: { "rhostsauthentication", oDeprecated },
1.17 markus 168: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 169: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
170: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.17 markus 171: { "rsaauthentication", oRSAAuthentication },
1.50 markus 172: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 173: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.72 markus 174: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
1.73 markus 175: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 176: { "challengeresponseauthentication", oChallengeResponseAuthentication },
177: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
178: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.110 jakob 179: { "kerberosauthentication", oUnsupported },
180: { "kerberostgtpassing", oUnsupported },
181: { "afstokenpassing", oUnsupported },
1.118 markus 182: #if defined(GSSAPI)
183: { "gssapiauthentication", oGssAuthentication },
184: { "gssapidelegatecredentials", oGssDelegateCreds },
185: #else
186: { "gssapiauthentication", oUnsupported },
187: { "gssapidelegatecredentials", oUnsupported },
188: #endif
1.96 markus 189: { "fallbacktorsh", oDeprecated },
190: { "usersh", oDeprecated },
1.17 markus 191: { "identityfile", oIdentityFile },
1.174 stevesk 192: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 193: { "identitiesonly", oIdentitiesOnly },
1.17 markus 194: { "hostname", oHostName },
1.52 markus 195: { "hostkeyalias", oHostKeyAlias },
1.17 markus 196: { "proxycommand", oProxyCommand },
197: { "port", oPort },
198: { "cipher", oCipher },
1.25 markus 199: { "ciphers", oCiphers },
1.62 markus 200: { "macs", oMacs },
1.25 markus 201: { "protocol", oProtocol },
1.17 markus 202: { "remoteforward", oRemoteForward },
203: { "localforward", oLocalForward },
204: { "user", oUser },
205: { "host", oHost },
1.206 djm 206: { "match", oMatch },
1.17 markus 207: { "escapechar", oEscapeChar },
208: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.193 djm 209: { "globalknownhostsfile2", oDeprecated },
1.174 stevesk 210: { "userknownhostsfile", oUserKnownHostsFile },
1.221 djm 211: { "userknownhostsfile2", oDeprecated },
1.17 markus 212: { "connectionattempts", oConnectionAttempts },
213: { "batchmode", oBatchMode },
214: { "checkhostip", oCheckHostIP },
215: { "stricthostkeychecking", oStrictHostKeyChecking },
216: { "compression", oCompression },
217: { "compressionlevel", oCompressionLevel },
1.126 markus 218: { "tcpkeepalive", oTCPKeepAlive },
219: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 220: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
221: { "loglevel", oLogLevel },
1.71 markus 222: { "dynamicforward", oDynamicForward },
1.67 markus 223: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 224: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.77 markus 225: { "bindaddress", oBindAddress },
1.183 markus 226: #ifdef ENABLE_PKCS11
227: { "smartcarddevice", oPKCS11Provider },
228: { "pkcs11provider", oPKCS11Provider },
1.110 jakob 229: #else
230: { "smartcarddevice", oUnsupported },
1.183 markus 231: { "pkcs11provider", oUnsupported },
1.110 jakob 232: #endif
1.93 deraadt 233: { "clearallforwardings", oClearAllForwardings },
1.101 markus 234: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 235: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 236: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 237: { "rekeylimit", oRekeyLimit },
1.111 djm 238: { "connecttimeout", oConnectTimeout },
1.112 djm 239: { "addressfamily", oAddressFamily },
1.127 markus 240: { "serveraliveinterval", oServerAliveInterval },
241: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 242: { "sendenv", oSendEnv },
1.132 djm 243: { "controlpath", oControlPath },
244: { "controlmaster", oControlMaster },
1.187 djm 245: { "controlpersist", oControlPersist },
1.136 djm 246: { "hashknownhosts", oHashKnownHosts },
1.144 reyk 247: { "tunnel", oTunnel },
248: { "tunneldevice", oTunnelDevice },
249: { "localcommand", oLocalCommand },
250: { "permitlocalcommand", oPermitLocalCommand },
1.167 grunk 251: { "visualhostkey", oVisualHostKey },
1.177 andreas 252: { "useroaming", oUseRoaming },
1.189 djm 253: { "kexalgorithms", oKexAlgorithms },
1.190 djm 254: { "ipqos", oIPQoS },
1.192 djm 255: { "requesttty", oRequestTTY },
1.205 djm 256: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 257: { "canonicaldomains", oCanonicalDomains },
1.209 djm 258: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
259: { "canonicalizehostname", oCanonicalizeHostname },
260: { "canonicalizemaxdots", oCanonicalizeMaxDots },
261: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 262: { "streamlocalbindmask", oStreamLocalBindMask },
263: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.223 djm 264: { "revokedhostkeys", oRevokedHostKeys },
1.224 djm 265: { "fingerprinthash", oFingerprintHash },
1.229 djm 266: { "updatehostkeys", oUpdateHostkeys },
1.230 djm 267: { "hostbasedkeytypes", oHostbasedKeyTypes },
1.238 markus 268: { "pubkeyacceptedkeytypes", oPubkeyAcceptedKeyTypes },
1.199 djm 269: { "ignoreunknown", oIgnoreUnknown },
1.171 djm 270:
1.92 stevesk 271: { NULL, oBadOption }
1.13 markus 272: };
273:
1.19 markus 274: /*
275: * Adds a local TCP/IP port forward to options. Never returns if there is an
276: * error.
277: */
1.1 deraadt 278:
1.26 markus 279: void
1.220 millert 280: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 281: {
1.220 millert 282: struct Forward *fwd;
1.17 markus 283: extern uid_t original_real_uid;
1.185 djm 284:
1.220 millert 285: if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0 &&
286: newfwd->listen_path == NULL)
1.64 millert 287: fatal("Privileged ports can only be forwarded by root.");
1.234 deraadt 288: options->local_forwards = xreallocarray(options->local_forwards,
1.185 djm 289: options->num_local_forwards + 1,
290: sizeof(*options->local_forwards));
1.17 markus 291: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 292:
1.172 stevesk 293: fwd->listen_host = newfwd->listen_host;
1.135 djm 294: fwd->listen_port = newfwd->listen_port;
1.220 millert 295: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 296: fwd->connect_host = newfwd->connect_host;
1.135 djm 297: fwd->connect_port = newfwd->connect_port;
1.220 millert 298: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 299: }
300:
1.19 markus 301: /*
302: * Adds a remote TCP/IP port forward to options. Never returns if there is
303: * an error.
304: */
1.1 deraadt 305:
1.26 markus 306: void
1.220 millert 307: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 308: {
1.220 millert 309: struct Forward *fwd;
1.185 djm 310:
1.234 deraadt 311: options->remote_forwards = xreallocarray(options->remote_forwards,
1.185 djm 312: options->num_remote_forwards + 1,
313: sizeof(*options->remote_forwards));
1.17 markus 314: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 315:
1.172 stevesk 316: fwd->listen_host = newfwd->listen_host;
1.135 djm 317: fwd->listen_port = newfwd->listen_port;
1.220 millert 318: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 319: fwd->connect_host = newfwd->connect_host;
1.135 djm 320: fwd->connect_port = newfwd->connect_port;
1.220 millert 321: fwd->connect_path = newfwd->connect_path;
1.194 markus 322: fwd->handle = newfwd->handle;
1.184 markus 323: fwd->allocated_port = 0;
1.1 deraadt 324: }
325:
1.90 stevesk 326: static void
327: clear_forwardings(Options *options)
328: {
329: int i;
330:
1.135 djm 331: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 332: free(options->local_forwards[i].listen_host);
1.220 millert 333: free(options->local_forwards[i].listen_path);
1.202 djm 334: free(options->local_forwards[i].connect_host);
1.220 millert 335: free(options->local_forwards[i].connect_path);
1.135 djm 336: }
1.185 djm 337: if (options->num_local_forwards > 0) {
1.202 djm 338: free(options->local_forwards);
1.185 djm 339: options->local_forwards = NULL;
340: }
1.90 stevesk 341: options->num_local_forwards = 0;
1.135 djm 342: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 343: free(options->remote_forwards[i].listen_host);
1.220 millert 344: free(options->remote_forwards[i].listen_path);
1.202 djm 345: free(options->remote_forwards[i].connect_host);
1.220 millert 346: free(options->remote_forwards[i].connect_path);
1.135 djm 347: }
1.185 djm 348: if (options->num_remote_forwards > 0) {
1.202 djm 349: free(options->remote_forwards);
1.185 djm 350: options->remote_forwards = NULL;
351: }
1.90 stevesk 352: options->num_remote_forwards = 0;
1.145 reyk 353: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 354: }
355:
1.195 dtucker 356: void
357: add_identity_file(Options *options, const char *dir, const char *filename,
358: int userprovided)
359: {
360: char *path;
1.219 djm 361: int i;
1.195 dtucker 362:
363: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
364: fatal("Too many identity files specified (max %d)",
365: SSH_MAX_IDENTITY_FILES);
366:
367: if (dir == NULL) /* no dir, filename is absolute */
368: path = xstrdup(filename);
369: else
370: (void)xasprintf(&path, "%.100s%.100s", dir, filename);
1.219 djm 371:
372: /* Avoid registering duplicates */
373: for (i = 0; i < options->num_identity_files; i++) {
374: if (options->identity_file_userprovided[i] == userprovided &&
375: strcmp(options->identity_files[i], path) == 0) {
376: debug2("%s: ignoring duplicate key %s", __func__, path);
377: free(path);
378: return;
379: }
380: }
1.195 dtucker 381:
382: options->identity_file_userprovided[options->num_identity_files] =
383: userprovided;
384: options->identity_files[options->num_identity_files++] = path;
385: }
386:
1.206 djm 387: int
388: default_ssh_port(void)
389: {
390: static int port;
391: struct servent *sp;
392:
393: if (port == 0) {
394: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
395: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
396: }
397: return port;
398: }
399:
400: /*
401: * Execute a command in a shell.
402: * Return its exit status or -1 on abnormal exit.
403: */
404: static int
405: execute_in_shell(const char *cmd)
406: {
407: char *shell, *command_string;
408: pid_t pid;
409: int devnull, status;
410: extern uid_t original_real_uid;
411:
412: if ((shell = getenv("SHELL")) == NULL)
413: shell = _PATH_BSHELL;
414:
415: /*
416: * Use "exec" to avoid "sh -c" processes on some platforms
417: * (e.g. Solaris)
418: */
419: xasprintf(&command_string, "exec %s", cmd);
420:
421: /* Need this to redirect subprocess stdin/out */
422: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
423: fatal("open(/dev/null): %s", strerror(errno));
424:
425: debug("Executing command: '%.500s'", cmd);
426:
427: /* Fork and execute the command. */
428: if ((pid = fork()) == 0) {
429: char *argv[4];
430:
431: /* Child. Permanently give up superuser privileges. */
432: permanently_drop_suid(original_real_uid);
433:
434: /* Redirect child stdin and stdout. Leave stderr */
435: if (dup2(devnull, STDIN_FILENO) == -1)
436: fatal("dup2: %s", strerror(errno));
437: if (dup2(devnull, STDOUT_FILENO) == -1)
438: fatal("dup2: %s", strerror(errno));
439: if (devnull > STDERR_FILENO)
440: close(devnull);
441: closefrom(STDERR_FILENO + 1);
442:
443: argv[0] = shell;
444: argv[1] = "-c";
445: argv[2] = command_string;
446: argv[3] = NULL;
447:
448: execv(argv[0], argv);
449: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
450: /* Die with signal to make this error apparent to parent. */
451: signal(SIGTERM, SIG_DFL);
452: kill(getpid(), SIGTERM);
453: _exit(1);
454: }
455: /* Parent. */
456: if (pid < 0)
457: fatal("%s: fork: %.100s", __func__, strerror(errno));
458:
459: close(devnull);
460: free(command_string);
461:
462: while (waitpid(pid, &status, 0) == -1) {
463: if (errno != EINTR && errno != EAGAIN)
464: fatal("%s: waitpid: %s", __func__, strerror(errno));
465: }
466: if (!WIFEXITED(status)) {
467: error("command '%.100s' exited abnormally", cmd);
468: return -1;
1.221 djm 469: }
1.206 djm 470: debug3("command returned status %d", WEXITSTATUS(status));
471: return WEXITSTATUS(status);
472: }
473:
474: /*
475: * Parse and execute a Match directive.
476: */
477: static int
478: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.221 djm 479: const char *host_arg, const char *original_host, int post_canon,
480: const char *filename, int linenum)
1.206 djm 481: {
1.221 djm 482: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 483: const char *ruser;
1.221 djm 484: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 485: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
486:
487: /*
488: * Configuration is likely to be incomplete at this point so we
489: * must be prepared to use default values.
490: */
491: port = options->port <= 0 ? default_ssh_port() : options->port;
492: ruser = options->user == NULL ? pw->pw_name : options->user;
1.211 djm 493: if (options->hostname != NULL) {
1.212 djm 494: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 495: host = percent_expand(options->hostname,
496: "h", host_arg, (char *)NULL);
497: } else
498: host = xstrdup(host_arg);
1.206 djm 499:
1.221 djm 500: debug2("checking match for '%s' host %s originally %s",
501: cp, host, original_host);
502: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
503: criteria = NULL;
504: this_result = 1;
505: if ((negate = attrib[0] == '!'))
506: attrib++;
507: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 508: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 509: if (attributes > 1 ||
1.213 dtucker 510: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 511: error("%.200s line %d: '%s' cannot be combined "
512: "with other Match attributes",
513: filename, linenum, oattrib);
1.213 dtucker 514: result = -1;
515: goto out;
516: }
1.221 djm 517: if (result)
518: result = negate ? 0 : 1;
1.213 dtucker 519: goto out;
520: }
1.221 djm 521: attributes++;
522: if (strcasecmp(attrib, "canonical") == 0) {
523: r = !!post_canon; /* force bitmask member to boolean */
524: if (r == (negate ? 1 : 0))
525: this_result = result = 0;
526: debug3("%.200s line %d: %smatched '%s'",
527: filename, linenum,
528: this_result ? "" : "not ", oattrib);
529: continue;
530: }
531: /* All other criteria require an argument */
1.206 djm 532: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
533: error("Missing Match criteria for %s", attrib);
1.211 djm 534: result = -1;
535: goto out;
1.206 djm 536: }
537: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 538: criteria = xstrdup(host);
1.235 djm 539: r = match_hostname(host, arg) == 1;
1.221 djm 540: if (r == (negate ? 1 : 0))
541: this_result = result = 0;
1.206 djm 542: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 543: criteria = xstrdup(original_host);
1.235 djm 544: r = match_hostname(original_host, arg) == 1;
1.221 djm 545: if (r == (negate ? 1 : 0))
546: this_result = result = 0;
1.206 djm 547: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 548: criteria = xstrdup(ruser);
1.235 djm 549: r = match_pattern_list(ruser, arg, 0) == 1;
1.221 djm 550: if (r == (negate ? 1 : 0))
551: this_result = result = 0;
1.206 djm 552: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 553: criteria = xstrdup(pw->pw_name);
1.235 djm 554: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.221 djm 555: if (r == (negate ? 1 : 0))
556: this_result = result = 0;
1.210 djm 557: } else if (strcasecmp(attrib, "exec") == 0) {
1.206 djm 558: if (gethostname(thishost, sizeof(thishost)) == -1)
559: fatal("gethostname: %s", strerror(errno));
560: strlcpy(shorthost, thishost, sizeof(shorthost));
561: shorthost[strcspn(thishost, ".")] = '\0';
562: snprintf(portstr, sizeof(portstr), "%d", port);
563:
564: cmd = percent_expand(arg,
565: "L", shorthost,
566: "d", pw->pw_dir,
567: "h", host,
568: "l", thishost,
1.221 djm 569: "n", original_host,
1.206 djm 570: "p", portstr,
571: "r", ruser,
572: "u", pw->pw_name,
573: (char *)NULL);
1.217 djm 574: if (result != 1) {
575: /* skip execution if prior predicate failed */
1.221 djm 576: debug3("%.200s line %d: skipped exec "
577: "\"%.100s\"", filename, linenum, cmd);
578: free(cmd);
579: continue;
580: }
581: r = execute_in_shell(cmd);
582: if (r == -1) {
583: fatal("%.200s line %d: match exec "
584: "'%.100s' error", filename,
585: linenum, cmd);
1.217 djm 586: }
1.221 djm 587: criteria = xstrdup(cmd);
1.206 djm 588: free(cmd);
1.221 djm 589: /* Force exit status to boolean */
590: r = r == 0;
591: if (r == (negate ? 1 : 0))
592: this_result = result = 0;
1.206 djm 593: } else {
594: error("Unsupported Match attribute %s", attrib);
1.211 djm 595: result = -1;
596: goto out;
1.206 djm 597: }
1.221 djm 598: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
599: filename, linenum, this_result ? "": "not ",
600: oattrib, criteria);
601: free(criteria);
1.213 dtucker 602: }
603: if (attributes == 0) {
604: error("One or more attributes required for Match");
605: result = -1;
606: goto out;
1.206 djm 607: }
1.221 djm 608: out:
609: if (result != -1)
610: debug2("match %sfound", result ? "" : "not ");
1.206 djm 611: *condition = cp;
1.211 djm 612: free(host);
1.206 djm 613: return result;
614: }
615:
1.208 djm 616: /* Check and prepare a domain name: removes trailing '.' and lowercases */
617: static void
618: valid_domain(char *name, const char *filename, int linenum)
619: {
620: size_t i, l = strlen(name);
621: u_char c, last = '\0';
622:
623: if (l == 0)
624: fatal("%s line %d: empty hostname suffix", filename, linenum);
625: if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0]))
626: fatal("%s line %d: hostname suffix \"%.100s\" "
627: "starts with invalid character", filename, linenum, name);
628: for (i = 0; i < l; i++) {
629: c = tolower((u_char)name[i]);
630: name[i] = (char)c;
631: if (last == '.' && c == '.')
632: fatal("%s line %d: hostname suffix \"%.100s\" contains "
633: "consecutive separators", filename, linenum, name);
634: if (c != '.' && c != '-' && !isalnum(c) &&
635: c != '_') /* technically invalid, but common */
636: fatal("%s line %d: hostname suffix \"%.100s\" contains "
637: "invalid characters", filename, linenum, name);
638: last = c;
639: }
640: if (name[l - 1] == '.')
641: name[l - 1] = '\0';
642: }
643:
1.19 markus 644: /*
1.70 stevesk 645: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 646: */
1.26 markus 647: static OpCodes
1.199 djm 648: parse_token(const char *cp, const char *filename, int linenum,
649: const char *ignored_unknown)
1.1 deraadt 650: {
1.199 djm 651: int i;
1.1 deraadt 652:
1.17 markus 653: for (i = 0; keywords[i].name; i++)
1.199 djm 654: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 655: return keywords[i].opcode;
1.235 djm 656: if (ignored_unknown != NULL &&
657: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.199 djm 658: return oIgnoredUnknownOption;
1.75 stevesk 659: error("%s: line %d: Bad configuration option: %s",
660: filename, linenum, cp);
1.17 markus 661: return oBadOption;
1.1 deraadt 662: }
663:
1.207 djm 664: /* Multistate option parsing */
665: struct multistate {
666: char *key;
667: int value;
668: };
669: static const struct multistate multistate_flag[] = {
670: { "true", 1 },
671: { "false", 0 },
672: { "yes", 1 },
673: { "no", 0 },
674: { NULL, -1 }
675: };
676: static const struct multistate multistate_yesnoask[] = {
677: { "true", 1 },
678: { "false", 0 },
679: { "yes", 1 },
680: { "no", 0 },
681: { "ask", 2 },
682: { NULL, -1 }
683: };
684: static const struct multistate multistate_addressfamily[] = {
685: { "inet", AF_INET },
686: { "inet6", AF_INET6 },
687: { "any", AF_UNSPEC },
688: { NULL, -1 }
689: };
690: static const struct multistate multistate_controlmaster[] = {
691: { "true", SSHCTL_MASTER_YES },
692: { "yes", SSHCTL_MASTER_YES },
693: { "false", SSHCTL_MASTER_NO },
694: { "no", SSHCTL_MASTER_NO },
695: { "auto", SSHCTL_MASTER_AUTO },
696: { "ask", SSHCTL_MASTER_ASK },
697: { "autoask", SSHCTL_MASTER_AUTO_ASK },
698: { NULL, -1 }
699: };
700: static const struct multistate multistate_tunnel[] = {
701: { "ethernet", SSH_TUNMODE_ETHERNET },
702: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
703: { "true", SSH_TUNMODE_DEFAULT },
704: { "yes", SSH_TUNMODE_DEFAULT },
705: { "false", SSH_TUNMODE_NO },
706: { "no", SSH_TUNMODE_NO },
707: { NULL, -1 }
708: };
709: static const struct multistate multistate_requesttty[] = {
710: { "true", REQUEST_TTY_YES },
711: { "yes", REQUEST_TTY_YES },
712: { "false", REQUEST_TTY_NO },
713: { "no", REQUEST_TTY_NO },
714: { "force", REQUEST_TTY_FORCE },
715: { "auto", REQUEST_TTY_AUTO },
716: { NULL, -1 }
717: };
1.209 djm 718: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 719: { "true", SSH_CANONICALISE_YES },
720: { "false", SSH_CANONICALISE_NO },
721: { "yes", SSH_CANONICALISE_YES },
722: { "no", SSH_CANONICALISE_NO },
723: { "always", SSH_CANONICALISE_ALWAYS },
724: { NULL, -1 }
725: };
1.207 djm 726:
1.19 markus 727: /*
728: * Processes a single option line as used in the configuration files. This
729: * only sets those values that have not already been set.
730: */
1.102 markus 731: #define WHITESPACE " \t\r\n"
1.14 markus 732: int
1.206 djm 733: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 734: const char *original_host, char *line, const char *filename,
735: int linenum, int *activep, int flags)
1.1 deraadt 736: {
1.193 djm 737: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
738: char **cpptr, fwdarg[256];
1.199 djm 739: u_int i, *uintptr, max_entries = 0;
1.206 djm 740: int negated, opcode, *intptr, value, value2, cmdline = 0;
1.164 dtucker 741: LogLevel *log_level_ptr;
1.201 dtucker 742: long long val64;
1.102 markus 743: size_t len;
1.220 millert 744: struct Forward fwd;
1.207 djm 745: const struct multistate *multistate_ptr;
1.208 djm 746: struct allowed_cname *cname;
1.106 djm 747:
1.206 djm 748: if (activep == NULL) { /* We are processing a command line directive */
749: cmdline = 1;
750: activep = &cmdline;
751: }
752:
1.106 djm 753: /* Strip trailing whitespace */
1.233 djm 754: if ((len = strlen(line)) == 0)
755: return 0;
756: for (len--; len > 0; len--) {
1.106 djm 757: if (strchr(WHITESPACE, line[len]) == NULL)
758: break;
759: line[len] = '\0';
760: }
1.1 deraadt 761:
1.42 provos 762: s = line;
763: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 764: if ((keyword = strdelim(&s)) == NULL)
765: return 0;
1.42 provos 766: /* Ignore leading whitespace. */
767: if (*keyword == '\0')
1.43 markus 768: keyword = strdelim(&s);
1.56 deraadt 769: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 770: return 0;
1.199 djm 771: /* Match lowercase keyword */
1.207 djm 772: lowercase(keyword);
1.17 markus 773:
1.199 djm 774: opcode = parse_token(keyword, filename, linenum,
775: options->ignored_unknown);
1.17 markus 776:
777: switch (opcode) {
778: case oBadOption:
1.19 markus 779: /* don't panic, but count bad options */
780: return -1;
1.17 markus 781: /* NOTREACHED */
1.199 djm 782: case oIgnoredUnknownOption:
783: debug("%s line %d: Ignored unknown option \"%s\"",
784: filename, linenum, keyword);
785: return 0;
1.111 djm 786: case oConnectTimeout:
787: intptr = &options->connection_timeout;
1.127 markus 788: parse_time:
1.111 djm 789: arg = strdelim(&s);
790: if (!arg || *arg == '\0')
791: fatal("%s line %d: missing time value.",
792: filename, linenum);
1.221 djm 793: if (strcmp(arg, "none") == 0)
794: value = -1;
795: else if ((value = convtime(arg)) == -1)
1.111 djm 796: fatal("%s line %d: invalid time value.",
797: filename, linenum);
1.160 dtucker 798: if (*activep && *intptr == -1)
1.111 djm 799: *intptr = value;
800: break;
801:
1.17 markus 802: case oForwardAgent:
803: intptr = &options->forward_agent;
1.207 djm 804: parse_flag:
805: multistate_ptr = multistate_flag;
806: parse_multistate:
1.42 provos 807: arg = strdelim(&s);
1.40 ho 808: if (!arg || *arg == '\0')
1.207 djm 809: fatal("%s line %d: missing argument.",
810: filename, linenum);
811: value = -1;
812: for (i = 0; multistate_ptr[i].key != NULL; i++) {
813: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
814: value = multistate_ptr[i].value;
815: break;
816: }
817: }
818: if (value == -1)
819: fatal("%s line %d: unsupported option \"%s\".",
820: filename, linenum, arg);
1.17 markus 821: if (*activep && *intptr == -1)
822: *intptr = value;
823: break;
824:
825: case oForwardX11:
826: intptr = &options->forward_x11;
827: goto parse_flag;
828:
1.123 markus 829: case oForwardX11Trusted:
830: intptr = &options->forward_x11_trusted;
831: goto parse_flag;
1.221 djm 832:
1.186 djm 833: case oForwardX11Timeout:
834: intptr = &options->forward_x11_timeout;
835: goto parse_time;
1.123 markus 836:
1.17 markus 837: case oGatewayPorts:
1.220 millert 838: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 839: goto parse_flag;
840:
1.153 markus 841: case oExitOnForwardFailure:
842: intptr = &options->exit_on_forward_failure;
843: goto parse_flag;
844:
1.17 markus 845: case oUsePrivilegedPort:
846: intptr = &options->use_privileged_port;
847: goto parse_flag;
848:
849: case oPasswordAuthentication:
850: intptr = &options->password_authentication;
851: goto parse_flag;
852:
1.48 markus 853: case oKbdInteractiveAuthentication:
854: intptr = &options->kbd_interactive_authentication;
855: goto parse_flag;
856:
857: case oKbdInteractiveDevices:
858: charptr = &options->kbd_interactive_devices;
859: goto parse_string;
860:
1.50 markus 861: case oPubkeyAuthentication:
862: intptr = &options->pubkey_authentication;
1.30 markus 863: goto parse_flag;
864:
1.17 markus 865: case oRSAAuthentication:
866: intptr = &options->rsa_authentication;
867: goto parse_flag;
868:
869: case oRhostsRSAAuthentication:
870: intptr = &options->rhosts_rsa_authentication;
871: goto parse_flag;
872:
1.72 markus 873: case oHostbasedAuthentication:
874: intptr = &options->hostbased_authentication;
875: goto parse_flag;
876:
1.59 markus 877: case oChallengeResponseAuthentication:
1.78 markus 878: intptr = &options->challenge_response_authentication;
1.17 markus 879: goto parse_flag;
1.108 jakob 880:
1.118 markus 881: case oGssAuthentication:
882: intptr = &options->gss_authentication;
883: goto parse_flag;
884:
885: case oGssDelegateCreds:
886: intptr = &options->gss_deleg_creds;
887: goto parse_flag;
888:
1.17 markus 889: case oBatchMode:
890: intptr = &options->batch_mode;
891: goto parse_flag;
892:
893: case oCheckHostIP:
894: intptr = &options->check_host_ip;
1.167 grunk 895: goto parse_flag;
1.17 markus 896:
1.107 jakob 897: case oVerifyHostKeyDNS:
898: intptr = &options->verify_host_key_dns;
1.207 djm 899: multistate_ptr = multistate_yesnoask;
900: goto parse_multistate;
1.107 jakob 901:
1.17 markus 902: case oStrictHostKeyChecking:
903: intptr = &options->strict_host_key_checking;
1.207 djm 904: multistate_ptr = multistate_yesnoask;
905: goto parse_multistate;
1.17 markus 906:
907: case oCompression:
908: intptr = &options->compression;
909: goto parse_flag;
910:
1.126 markus 911: case oTCPKeepAlive:
912: intptr = &options->tcp_keep_alive;
1.17 markus 913: goto parse_flag;
914:
1.91 markus 915: case oNoHostAuthenticationForLocalhost:
916: intptr = &options->no_host_authentication_for_localhost;
917: goto parse_flag;
918:
1.17 markus 919: case oNumberOfPasswordPrompts:
920: intptr = &options->number_of_password_prompts;
921: goto parse_int;
922:
923: case oCompressionLevel:
924: intptr = &options->compression_level;
925: goto parse_int;
926:
1.105 markus 927: case oRekeyLimit:
928: arg = strdelim(&s);
929: if (!arg || *arg == '\0')
1.198 dtucker 930: fatal("%.200s line %d: Missing argument.", filename,
931: linenum);
932: if (strcmp(arg, "default") == 0) {
933: val64 = 0;
934: } else {
1.200 dtucker 935: if (scan_scaled(arg, &val64) == -1)
936: fatal("%.200s line %d: Bad number '%s': %s",
937: filename, linenum, arg, strerror(errno));
938: /* check for too-large or too-small limits */
939: if (val64 > UINT_MAX)
1.198 dtucker 940: fatal("%.200s line %d: RekeyLimit too large",
941: filename, linenum);
942: if (val64 != 0 && val64 < 16)
943: fatal("%.200s line %d: RekeyLimit too small",
944: filename, linenum);
1.105 markus 945: }
1.165 djm 946: if (*activep && options->rekey_limit == -1)
947: options->rekey_limit = (u_int32_t)val64;
1.198 dtucker 948: if (s != NULL) { /* optional rekey interval present */
949: if (strcmp(s, "none") == 0) {
950: (void)strdelim(&s); /* discard */
951: break;
952: }
953: intptr = &options->rekey_interval;
954: goto parse_time;
955: }
1.105 markus 956: break;
957:
1.17 markus 958: case oIdentityFile:
1.42 provos 959: arg = strdelim(&s);
1.40 ho 960: if (!arg || *arg == '\0')
1.17 markus 961: fatal("%.200s line %d: Missing argument.", filename, linenum);
962: if (*activep) {
1.50 markus 963: intptr = &options->num_identity_files;
1.27 markus 964: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 965: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 966: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 967: add_identity_file(options, NULL,
968: arg, flags & SSHCONF_USERCONF);
1.17 markus 969: }
970: break;
971:
1.34 markus 972: case oXAuthLocation:
973: charptr=&options->xauth_location;
974: goto parse_string;
975:
1.17 markus 976: case oUser:
977: charptr = &options->user;
978: parse_string:
1.42 provos 979: arg = strdelim(&s);
1.40 ho 980: if (!arg || *arg == '\0')
1.193 djm 981: fatal("%.200s line %d: Missing argument.",
982: filename, linenum);
1.17 markus 983: if (*activep && *charptr == NULL)
1.38 provos 984: *charptr = xstrdup(arg);
1.17 markus 985: break;
986:
987: case oGlobalKnownHostsFile:
1.193 djm 988: cpptr = (char **)&options->system_hostfiles;
989: uintptr = &options->num_system_hostfiles;
990: max_entries = SSH_MAX_HOSTS_FILES;
991: parse_char_array:
992: if (*activep && *uintptr == 0) {
993: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
994: if ((*uintptr) >= max_entries)
995: fatal("%s line %d: "
996: "too many authorized keys files.",
997: filename, linenum);
998: cpptr[(*uintptr)++] = xstrdup(arg);
999: }
1000: }
1001: return 0;
1.17 markus 1002:
1003: case oUserKnownHostsFile:
1.193 djm 1004: cpptr = (char **)&options->user_hostfiles;
1005: uintptr = &options->num_user_hostfiles;
1006: max_entries = SSH_MAX_HOSTS_FILES;
1007: goto parse_char_array;
1.27 markus 1008:
1.17 markus 1009: case oHostName:
1010: charptr = &options->hostname;
1011: goto parse_string;
1012:
1.52 markus 1013: case oHostKeyAlias:
1014: charptr = &options->host_key_alias;
1015: goto parse_string;
1016:
1.67 markus 1017: case oPreferredAuthentications:
1018: charptr = &options->preferred_authentications;
1019: goto parse_string;
1020:
1.77 markus 1021: case oBindAddress:
1022: charptr = &options->bind_address;
1023: goto parse_string;
1024:
1.183 markus 1025: case oPKCS11Provider:
1026: charptr = &options->pkcs11_provider;
1.86 markus 1027: goto parse_string;
1.85 jakob 1028:
1.17 markus 1029: case oProxyCommand:
1.144 reyk 1030: charptr = &options->proxy_command;
1031: parse_command:
1.113 markus 1032: if (s == NULL)
1033: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1034: len = strspn(s, WHITESPACE "=");
1.17 markus 1035: if (*activep && *charptr == NULL)
1.102 markus 1036: *charptr = xstrdup(s + len);
1.17 markus 1037: return 0;
1038:
1039: case oPort:
1040: intptr = &options->port;
1041: parse_int:
1.42 provos 1042: arg = strdelim(&s);
1.40 ho 1043: if (!arg || *arg == '\0')
1.17 markus 1044: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1045: if (arg[0] < '0' || arg[0] > '9')
1.17 markus 1046: fatal("%.200s line %d: Bad number.", filename, linenum);
1.21 markus 1047:
1048: /* Octal, decimal, or hex format? */
1.38 provos 1049: value = strtol(arg, &endofnumber, 0);
1050: if (arg == endofnumber)
1.21 markus 1051: fatal("%.200s line %d: Bad number.", filename, linenum);
1.17 markus 1052: if (*activep && *intptr == -1)
1053: *intptr = value;
1054: break;
1055:
1056: case oConnectionAttempts:
1057: intptr = &options->connection_attempts;
1058: goto parse_int;
1059:
1060: case oCipher:
1061: intptr = &options->cipher;
1.42 provos 1062: arg = strdelim(&s);
1.40 ho 1063: if (!arg || *arg == '\0')
1.32 markus 1064: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1065: value = cipher_number(arg);
1.17 markus 1066: if (value == -1)
1067: fatal("%.200s line %d: Bad cipher '%s'.",
1.93 deraadt 1068: filename, linenum, arg ? arg : "<NONE>");
1.17 markus 1069: if (*activep && *intptr == -1)
1070: *intptr = value;
1071: break;
1072:
1.25 markus 1073: case oCiphers:
1.42 provos 1074: arg = strdelim(&s);
1.40 ho 1075: if (!arg || *arg == '\0')
1.32 markus 1076: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.239 djm 1077: if (!ciphers_valid(*arg == '+' ? arg + 1 : arg))
1.31 markus 1078: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1079: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1080: if (*activep && options->ciphers == NULL)
1.38 provos 1081: options->ciphers = xstrdup(arg);
1.25 markus 1082: break;
1083:
1.62 markus 1084: case oMacs:
1085: arg = strdelim(&s);
1086: if (!arg || *arg == '\0')
1087: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.239 djm 1088: if (!mac_valid(*arg == '+' ? arg + 1 : arg))
1.62 markus 1089: fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
1.93 deraadt 1090: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1091: if (*activep && options->macs == NULL)
1092: options->macs = xstrdup(arg);
1093: break;
1094:
1.189 djm 1095: case oKexAlgorithms:
1096: arg = strdelim(&s);
1097: if (!arg || *arg == '\0')
1098: fatal("%.200s line %d: Missing argument.",
1099: filename, linenum);
1.239 djm 1100: if (!kex_names_valid(*arg == '+' ? arg + 1 : arg))
1.189 djm 1101: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1102: filename, linenum, arg ? arg : "<NONE>");
1103: if (*activep && options->kex_algorithms == NULL)
1104: options->kex_algorithms = xstrdup(arg);
1105: break;
1106:
1.76 markus 1107: case oHostKeyAlgorithms:
1.238 markus 1108: charptr = &options->hostkeyalgorithms;
1109: parse_keytypes:
1.76 markus 1110: arg = strdelim(&s);
1111: if (!arg || *arg == '\0')
1.238 markus 1112: fatal("%.200s line %d: Missing argument.",
1113: filename, linenum);
1.239 djm 1114: if (!sshkey_names_valid2(*arg == '+' ? arg + 1 : arg, 1))
1.238 markus 1115: fatal("%s line %d: Bad key types '%s'.",
1116: filename, linenum, arg ? arg : "<NONE>");
1117: if (*activep && *charptr == NULL)
1118: *charptr = xstrdup(arg);
1.76 markus 1119: break;
1120:
1.25 markus 1121: case oProtocol:
1122: intptr = &options->protocol;
1.42 provos 1123: arg = strdelim(&s);
1.40 ho 1124: if (!arg || *arg == '\0')
1.32 markus 1125: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1126: value = proto_spec(arg);
1.25 markus 1127: if (value == SSH_PROTO_UNKNOWN)
1128: fatal("%.200s line %d: Bad protocol spec '%s'.",
1.93 deraadt 1129: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1130: if (*activep && *intptr == SSH_PROTO_UNKNOWN)
1131: *intptr = value;
1132: break;
1133:
1.17 markus 1134: case oLogLevel:
1.164 dtucker 1135: log_level_ptr = &options->log_level;
1.42 provos 1136: arg = strdelim(&s);
1.38 provos 1137: value = log_level_number(arg);
1.95 markus 1138: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1139: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1140: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1141: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1142: *log_level_ptr = (LogLevel) value;
1.17 markus 1143: break;
1144:
1.88 stevesk 1145: case oLocalForward:
1.17 markus 1146: case oRemoteForward:
1.168 stevesk 1147: case oDynamicForward:
1.42 provos 1148: arg = strdelim(&s);
1.135 djm 1149: if (arg == NULL || *arg == '\0')
1.88 stevesk 1150: fatal("%.200s line %d: Missing port argument.",
1151: filename, linenum);
1.135 djm 1152:
1.168 stevesk 1153: if (opcode == oLocalForward ||
1154: opcode == oRemoteForward) {
1155: arg2 = strdelim(&s);
1156: if (arg2 == NULL || *arg2 == '\0')
1157: fatal("%.200s line %d: Missing target argument.",
1158: filename, linenum);
1.135 djm 1159:
1.168 stevesk 1160: /* construct a string for parse_forward */
1161: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
1162: } else if (opcode == oDynamicForward) {
1163: strlcpy(fwdarg, arg, sizeof(fwdarg));
1164: }
1165:
1166: if (parse_forward(&fwd, fwdarg,
1.176 djm 1167: opcode == oDynamicForward ? 1 : 0,
1168: opcode == oRemoteForward ? 1 : 0) == 0)
1.88 stevesk 1169: fatal("%.200s line %d: Bad forwarding specification.",
1170: filename, linenum);
1.135 djm 1171:
1.88 stevesk 1172: if (*activep) {
1.168 stevesk 1173: if (opcode == oLocalForward ||
1174: opcode == oDynamicForward)
1.135 djm 1175: add_local_forward(options, &fwd);
1.88 stevesk 1176: else if (opcode == oRemoteForward)
1.135 djm 1177: add_remote_forward(options, &fwd);
1.88 stevesk 1178: }
1.17 markus 1179: break;
1.71 markus 1180:
1.90 stevesk 1181: case oClearAllForwardings:
1182: intptr = &options->clear_forwardings;
1183: goto parse_flag;
1184:
1.17 markus 1185: case oHost:
1.206 djm 1186: if (cmdline)
1187: fatal("Host directive not supported as a command-line "
1188: "option");
1.17 markus 1189: *activep = 0;
1.191 djm 1190: arg2 = NULL;
1191: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1192: negated = *arg == '!';
1193: if (negated)
1194: arg++;
1.38 provos 1195: if (match_pattern(host, arg)) {
1.191 djm 1196: if (negated) {
1197: debug("%.200s line %d: Skipping Host "
1198: "block because of negated match "
1199: "for %.100s", filename, linenum,
1200: arg);
1201: *activep = 0;
1202: break;
1203: }
1204: if (!*activep)
1205: arg2 = arg; /* logged below */
1.17 markus 1206: *activep = 1;
1207: }
1.191 djm 1208: }
1209: if (*activep)
1210: debug("%.200s line %d: Applying options for %.100s",
1211: filename, linenum, arg2);
1.42 provos 1212: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1213: return 0;
1214:
1.206 djm 1215: case oMatch:
1216: if (cmdline)
1217: fatal("Host directive not supported as a command-line "
1218: "option");
1.221 djm 1219: value = match_cfg_line(options, &s, pw, host, original_host,
1220: flags & SSHCONF_POSTCANON, filename, linenum);
1.206 djm 1221: if (value < 0)
1222: fatal("%.200s line %d: Bad Match condition", filename,
1223: linenum);
1224: *activep = value;
1225: break;
1226:
1.17 markus 1227: case oEscapeChar:
1228: intptr = &options->escape_char;
1.42 provos 1229: arg = strdelim(&s);
1.40 ho 1230: if (!arg || *arg == '\0')
1.17 markus 1231: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.236 djm 1232: if (strcmp(arg, "none") == 0)
1233: value = SSH_ESCAPECHAR_NONE;
1234: else if (arg[1] == '\0')
1235: value = (u_char) arg[0];
1236: else if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1237: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1238: value = (u_char) arg[1] & 31;
1.17 markus 1239: else {
1240: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1241: filename, linenum);
1.17 markus 1242: /* NOTREACHED */
1243: value = 0; /* Avoid compiler warning. */
1244: }
1245: if (*activep && *intptr == -1)
1246: *intptr = value;
1.112 djm 1247: break;
1248:
1249: case oAddressFamily:
1.114 djm 1250: intptr = &options->address_family;
1.207 djm 1251: multistate_ptr = multistate_addressfamily;
1252: goto parse_multistate;
1.17 markus 1253:
1.101 markus 1254: case oEnableSSHKeysign:
1255: intptr = &options->enable_ssh_keysign;
1256: goto parse_flag;
1257:
1.128 markus 1258: case oIdentitiesOnly:
1259: intptr = &options->identities_only;
1260: goto parse_flag;
1261:
1.127 markus 1262: case oServerAliveInterval:
1263: intptr = &options->server_alive_interval;
1264: goto parse_time;
1265:
1266: case oServerAliveCountMax:
1267: intptr = &options->server_alive_count_max;
1268: goto parse_int;
1269:
1.130 djm 1270: case oSendEnv:
1271: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1272: if (strchr(arg, '=') != NULL)
1273: fatal("%s line %d: Invalid environment name.",
1274: filename, linenum);
1.137 djm 1275: if (!*activep)
1276: continue;
1.130 djm 1277: if (options->num_send_env >= MAX_SEND_ENV)
1278: fatal("%s line %d: too many send env.",
1279: filename, linenum);
1280: options->send_env[options->num_send_env++] =
1281: xstrdup(arg);
1282: }
1283: break;
1284:
1.132 djm 1285: case oControlPath:
1286: charptr = &options->control_path;
1287: goto parse_string;
1288:
1289: case oControlMaster:
1290: intptr = &options->control_master;
1.207 djm 1291: multistate_ptr = multistate_controlmaster;
1292: goto parse_multistate;
1.132 djm 1293:
1.187 djm 1294: case oControlPersist:
1295: /* no/false/yes/true, or a time spec */
1296: intptr = &options->control_persist;
1297: arg = strdelim(&s);
1298: if (!arg || *arg == '\0')
1299: fatal("%.200s line %d: Missing ControlPersist"
1300: " argument.", filename, linenum);
1301: value = 0;
1302: value2 = 0; /* timeout */
1303: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1304: value = 0;
1305: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1306: value = 1;
1307: else if ((value2 = convtime(arg)) >= 0)
1308: value = 1;
1309: else
1310: fatal("%.200s line %d: Bad ControlPersist argument.",
1311: filename, linenum);
1312: if (*activep && *intptr == -1) {
1313: *intptr = value;
1314: options->control_persist_timeout = value2;
1315: }
1316: break;
1317:
1.136 djm 1318: case oHashKnownHosts:
1319: intptr = &options->hash_known_hosts;
1320: goto parse_flag;
1321:
1.144 reyk 1322: case oTunnel:
1323: intptr = &options->tun_open;
1.207 djm 1324: multistate_ptr = multistate_tunnel;
1325: goto parse_multistate;
1.144 reyk 1326:
1327: case oTunnelDevice:
1328: arg = strdelim(&s);
1329: if (!arg || *arg == '\0')
1330: fatal("%.200s line %d: Missing argument.", filename, linenum);
1331: value = a2tun(arg, &value2);
1.145 reyk 1332: if (value == SSH_TUNID_ERR)
1.144 reyk 1333: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1334: if (*activep) {
1335: options->tun_local = value;
1336: options->tun_remote = value2;
1337: }
1338: break;
1339:
1340: case oLocalCommand:
1341: charptr = &options->local_command;
1342: goto parse_command;
1343:
1344: case oPermitLocalCommand:
1345: intptr = &options->permit_local_command;
1346: goto parse_flag;
1347:
1.167 grunk 1348: case oVisualHostKey:
1349: intptr = &options->visual_host_key;
1350: goto parse_flag;
1351:
1.190 djm 1352: case oIPQoS:
1353: arg = strdelim(&s);
1354: if ((value = parse_ipqos(arg)) == -1)
1355: fatal("%s line %d: Bad IPQoS value: %s",
1356: filename, linenum, arg);
1357: arg = strdelim(&s);
1358: if (arg == NULL)
1359: value2 = value;
1360: else if ((value2 = parse_ipqos(arg)) == -1)
1361: fatal("%s line %d: Bad IPQoS value: %s",
1362: filename, linenum, arg);
1363: if (*activep) {
1364: options->ip_qos_interactive = value;
1365: options->ip_qos_bulk = value2;
1366: }
1367: break;
1368:
1.177 andreas 1369: case oUseRoaming:
1370: intptr = &options->use_roaming;
1371: goto parse_flag;
1372:
1.192 djm 1373: case oRequestTTY:
1374: intptr = &options->request_tty;
1.207 djm 1375: multistate_ptr = multistate_requesttty;
1376: goto parse_multistate;
1.192 djm 1377:
1.199 djm 1378: case oIgnoreUnknown:
1379: charptr = &options->ignored_unknown;
1380: goto parse_string;
1381:
1.205 djm 1382: case oProxyUseFdpass:
1383: intptr = &options->proxy_use_fdpass;
1384: goto parse_flag;
1385:
1.208 djm 1386: case oCanonicalDomains:
1387: value = options->num_canonical_domains != 0;
1388: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1389: valid_domain(arg, filename, linenum);
1390: if (!*activep || value)
1391: continue;
1392: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1393: fatal("%s line %d: too many hostname suffixes.",
1394: filename, linenum);
1395: options->canonical_domains[
1396: options->num_canonical_domains++] = xstrdup(arg);
1397: }
1398: break;
1399:
1.209 djm 1400: case oCanonicalizePermittedCNAMEs:
1.208 djm 1401: value = options->num_permitted_cnames != 0;
1402: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1403: /* Either '*' for everything or 'list:list' */
1404: if (strcmp(arg, "*") == 0)
1405: arg2 = arg;
1406: else {
1407: lowercase(arg);
1408: if ((arg2 = strchr(arg, ':')) == NULL ||
1409: arg2[1] == '\0') {
1410: fatal("%s line %d: "
1411: "Invalid permitted CNAME \"%s\"",
1412: filename, linenum, arg);
1413: }
1414: *arg2 = '\0';
1415: arg2++;
1416: }
1417: if (!*activep || value)
1418: continue;
1419: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1420: fatal("%s line %d: too many permitted CNAMEs.",
1421: filename, linenum);
1422: cname = options->permitted_cnames +
1423: options->num_permitted_cnames++;
1424: cname->source_list = xstrdup(arg);
1425: cname->target_list = xstrdup(arg2);
1426: }
1427: break;
1428:
1.209 djm 1429: case oCanonicalizeHostname:
1430: intptr = &options->canonicalize_hostname;
1431: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1432: goto parse_multistate;
1433:
1.209 djm 1434: case oCanonicalizeMaxDots:
1435: intptr = &options->canonicalize_max_dots;
1.208 djm 1436: goto parse_int;
1437:
1.209 djm 1438: case oCanonicalizeFallbackLocal:
1439: intptr = &options->canonicalize_fallback_local;
1.208 djm 1440: goto parse_flag;
1441:
1.220 millert 1442: case oStreamLocalBindMask:
1443: arg = strdelim(&s);
1444: if (!arg || *arg == '\0')
1445: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1446: /* Parse mode in octal format */
1447: value = strtol(arg, &endofnumber, 8);
1448: if (arg == endofnumber || value < 0 || value > 0777)
1449: fatal("%.200s line %d: Bad mask.", filename, linenum);
1450: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1451: break;
1452:
1453: case oStreamLocalBindUnlink:
1454: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1455: goto parse_flag;
1456:
1.223 djm 1457: case oRevokedHostKeys:
1458: charptr = &options->revoked_host_keys;
1459: goto parse_string;
1460:
1.224 djm 1461: case oFingerprintHash:
1.225 djm 1462: intptr = &options->fingerprint_hash;
1.224 djm 1463: arg = strdelim(&s);
1464: if (!arg || *arg == '\0')
1465: fatal("%.200s line %d: Missing argument.",
1466: filename, linenum);
1467: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1468: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1469: filename, linenum, arg);
1.225 djm 1470: if (*activep && *intptr == -1)
1471: *intptr = value;
1.224 djm 1472: break;
1473:
1.229 djm 1474: case oUpdateHostkeys:
1475: intptr = &options->update_hostkeys;
1.232 djm 1476: multistate_ptr = multistate_yesnoask;
1477: goto parse_multistate;
1.229 djm 1478:
1.230 djm 1479: case oHostbasedKeyTypes:
1480: charptr = &options->hostbased_key_types;
1.238 markus 1481: goto parse_keytypes;
1482:
1483: case oPubkeyAcceptedKeyTypes:
1484: charptr = &options->pubkey_key_types;
1485: goto parse_keytypes;
1.230 djm 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;
1.239.2.1! sthen 1651: options->use_roaming = 0;
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;
1.238 markus 1667: options->pubkey_key_types = NULL;
1.1 deraadt 1668: }
1669:
1.19 markus 1670: /*
1.218 djm 1671: * A petite version of fill_default_options() that just fills the options
1672: * needed for hostname canonicalization to proceed.
1673: */
1674: void
1675: fill_default_options_for_canonicalization(Options *options)
1676: {
1677: if (options->canonicalize_max_dots == -1)
1678: options->canonicalize_max_dots = 1;
1679: if (options->canonicalize_fallback_local == -1)
1680: options->canonicalize_fallback_local = 1;
1681: if (options->canonicalize_hostname == -1)
1682: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1683: }
1684:
1685: /*
1.19 markus 1686: * Called after processing other sources of option data, this fills those
1687: * options for which no value has been specified with their default values.
1688: */
1.26 markus 1689: void
1.17 markus 1690: fill_default_options(Options * options)
1.1 deraadt 1691: {
1.17 markus 1692: if (options->forward_agent == -1)
1.33 markus 1693: options->forward_agent = 0;
1.17 markus 1694: if (options->forward_x11 == -1)
1.23 markus 1695: options->forward_x11 = 0;
1.123 markus 1696: if (options->forward_x11_trusted == -1)
1697: options->forward_x11_trusted = 0;
1.186 djm 1698: if (options->forward_x11_timeout == -1)
1699: options->forward_x11_timeout = 1200;
1.153 markus 1700: if (options->exit_on_forward_failure == -1)
1701: options->exit_on_forward_failure = 0;
1.34 markus 1702: if (options->xauth_location == NULL)
1.80 markus 1703: options->xauth_location = _PATH_XAUTH;
1.220 millert 1704: if (options->fwd_opts.gateway_ports == -1)
1705: options->fwd_opts.gateway_ports = 0;
1706: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
1707: options->fwd_opts.streamlocal_bind_mask = 0177;
1708: if (options->fwd_opts.streamlocal_bind_unlink == -1)
1709: options->fwd_opts.streamlocal_bind_unlink = 0;
1.17 markus 1710: if (options->use_privileged_port == -1)
1.65 markus 1711: options->use_privileged_port = 0;
1.17 markus 1712: if (options->rsa_authentication == -1)
1713: options->rsa_authentication = 1;
1.50 markus 1714: if (options->pubkey_authentication == -1)
1715: options->pubkey_authentication = 1;
1.78 markus 1716: if (options->challenge_response_authentication == -1)
1.83 markus 1717: options->challenge_response_authentication = 1;
1.118 markus 1718: if (options->gss_authentication == -1)
1.122 markus 1719: options->gss_authentication = 0;
1.118 markus 1720: if (options->gss_deleg_creds == -1)
1721: options->gss_deleg_creds = 0;
1.17 markus 1722: if (options->password_authentication == -1)
1723: options->password_authentication = 1;
1.48 markus 1724: if (options->kbd_interactive_authentication == -1)
1.59 markus 1725: options->kbd_interactive_authentication = 1;
1.17 markus 1726: if (options->rhosts_rsa_authentication == -1)
1.99 stevesk 1727: options->rhosts_rsa_authentication = 0;
1.72 markus 1728: if (options->hostbased_authentication == -1)
1729: options->hostbased_authentication = 0;
1.17 markus 1730: if (options->batch_mode == -1)
1731: options->batch_mode = 0;
1732: if (options->check_host_ip == -1)
1733: options->check_host_ip = 1;
1734: if (options->strict_host_key_checking == -1)
1735: options->strict_host_key_checking = 2; /* 2 is default */
1736: if (options->compression == -1)
1737: options->compression = 0;
1.126 markus 1738: if (options->tcp_keep_alive == -1)
1739: options->tcp_keep_alive = 1;
1.17 markus 1740: if (options->compression_level == -1)
1741: options->compression_level = 6;
1742: if (options->port == -1)
1743: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 1744: if (options->address_family == -1)
1745: options->address_family = AF_UNSPEC;
1.17 markus 1746: if (options->connection_attempts == -1)
1.84 markus 1747: options->connection_attempts = 1;
1.17 markus 1748: if (options->number_of_password_prompts == -1)
1749: options->number_of_password_prompts = 3;
1750: /* Selected in ssh_login(). */
1751: if (options->cipher == -1)
1752: options->cipher = SSH_CIPHER_NOT_SET;
1.76 markus 1753: /* options->hostkeyalgorithms, default set in myproposals.h */
1.25 markus 1754: if (options->protocol == SSH_PROTO_UNKNOWN)
1.178 markus 1755: options->protocol = SSH_PROTO_2;
1.17 markus 1756: if (options->num_identity_files == 0) {
1.50 markus 1757: if (options->protocol & SSH_PROTO_1) {
1.195 dtucker 1758: add_identity_file(options, "~/",
1759: _PATH_SSH_CLIENT_IDENTITY, 0);
1.50 markus 1760: }
1761: if (options->protocol & SSH_PROTO_2) {
1.195 dtucker 1762: add_identity_file(options, "~/",
1763: _PATH_SSH_CLIENT_ID_RSA, 0);
1764: add_identity_file(options, "~/",
1765: _PATH_SSH_CLIENT_ID_DSA, 0);
1766: add_identity_file(options, "~/",
1767: _PATH_SSH_CLIENT_ID_ECDSA, 0);
1.215 markus 1768: add_identity_file(options, "~/",
1769: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.50 markus 1770: }
1.27 markus 1771: }
1.17 markus 1772: if (options->escape_char == -1)
1773: options->escape_char = '~';
1.193 djm 1774: if (options->num_system_hostfiles == 0) {
1775: options->system_hostfiles[options->num_system_hostfiles++] =
1776: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
1777: options->system_hostfiles[options->num_system_hostfiles++] =
1778: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
1779: }
1780: if (options->num_user_hostfiles == 0) {
1781: options->user_hostfiles[options->num_user_hostfiles++] =
1782: xstrdup(_PATH_SSH_USER_HOSTFILE);
1783: options->user_hostfiles[options->num_user_hostfiles++] =
1784: xstrdup(_PATH_SSH_USER_HOSTFILE2);
1785: }
1.95 markus 1786: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 1787: options->log_level = SYSLOG_LEVEL_INFO;
1.90 stevesk 1788: if (options->clear_forwardings == 1)
1789: clear_forwardings(options);
1.91 markus 1790: if (options->no_host_authentication_for_localhost == - 1)
1791: options->no_host_authentication_for_localhost = 0;
1.128 markus 1792: if (options->identities_only == -1)
1793: options->identities_only = 0;
1.101 markus 1794: if (options->enable_ssh_keysign == -1)
1795: options->enable_ssh_keysign = 0;
1.105 markus 1796: if (options->rekey_limit == -1)
1797: options->rekey_limit = 0;
1.198 dtucker 1798: if (options->rekey_interval == -1)
1799: options->rekey_interval = 0;
1.107 jakob 1800: if (options->verify_host_key_dns == -1)
1801: options->verify_host_key_dns = 0;
1.127 markus 1802: if (options->server_alive_interval == -1)
1803: options->server_alive_interval = 0;
1804: if (options->server_alive_count_max == -1)
1805: options->server_alive_count_max = 3;
1.132 djm 1806: if (options->control_master == -1)
1807: options->control_master = 0;
1.187 djm 1808: if (options->control_persist == -1) {
1809: options->control_persist = 0;
1810: options->control_persist_timeout = 0;
1811: }
1.136 djm 1812: if (options->hash_known_hosts == -1)
1813: options->hash_known_hosts = 0;
1.144 reyk 1814: if (options->tun_open == -1)
1.145 reyk 1815: options->tun_open = SSH_TUNMODE_NO;
1816: if (options->tun_local == -1)
1817: options->tun_local = SSH_TUNID_ANY;
1818: if (options->tun_remote == -1)
1819: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 1820: if (options->permit_local_command == -1)
1821: options->permit_local_command = 0;
1.239.2.1! sthen 1822: options->use_roaming = 0;
1.167 grunk 1823: if (options->visual_host_key == -1)
1824: options->visual_host_key = 0;
1.190 djm 1825: if (options->ip_qos_interactive == -1)
1826: options->ip_qos_interactive = IPTOS_LOWDELAY;
1827: if (options->ip_qos_bulk == -1)
1828: options->ip_qos_bulk = IPTOS_THROUGHPUT;
1.192 djm 1829: if (options->request_tty == -1)
1830: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 1831: if (options->proxy_use_fdpass == -1)
1832: options->proxy_use_fdpass = 0;
1.209 djm 1833: if (options->canonicalize_max_dots == -1)
1834: options->canonicalize_max_dots = 1;
1835: if (options->canonicalize_fallback_local == -1)
1836: options->canonicalize_fallback_local = 1;
1837: if (options->canonicalize_hostname == -1)
1838: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.224 djm 1839: if (options->fingerprint_hash == -1)
1840: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.229 djm 1841: if (options->update_hostkeys == -1)
1.231 djm 1842: options->update_hostkeys = 0;
1.239 djm 1843: if (kex_assemble_names(KEX_CLIENT_ENCRYPT, &options->ciphers) != 0 ||
1844: kex_assemble_names(KEX_CLIENT_MAC, &options->macs) != 0 ||
1845: kex_assemble_names(KEX_CLIENT_KEX, &options->kex_algorithms) != 0 ||
1846: kex_assemble_names(KEX_DEFAULT_PK_ALG,
1847: &options->hostbased_key_types) != 0 ||
1848: kex_assemble_names(KEX_DEFAULT_PK_ALG,
1849: &options->pubkey_key_types) != 0)
1850: fatal("%s: kex_assemble_names failed", __func__);
1.224 djm 1851:
1.207 djm 1852: #define CLEAR_ON_NONE(v) \
1853: do { \
1.218 djm 1854: if (option_clear_or_none(v)) { \
1.207 djm 1855: free(v); \
1856: v = NULL; \
1857: } \
1858: } while(0)
1859: CLEAR_ON_NONE(options->local_command);
1860: CLEAR_ON_NONE(options->proxy_command);
1861: CLEAR_ON_NONE(options->control_path);
1.223 djm 1862: CLEAR_ON_NONE(options->revoked_host_keys);
1.17 markus 1863: /* options->user will be set in the main program if appropriate */
1864: /* options->hostname will be set in the main program if appropriate */
1.52 markus 1865: /* options->host_key_alias should not be set by default */
1.67 markus 1866: /* options->preferred_authentications will be set in ssh */
1.135 djm 1867: }
1868:
1.220 millert 1869: struct fwdarg {
1870: char *arg;
1871: int ispath;
1872: };
1873:
1874: /*
1875: * parse_fwd_field
1876: * parses the next field in a port forwarding specification.
1877: * sets fwd to the parsed field and advances p past the colon
1878: * or sets it to NULL at end of string.
1879: * returns 0 on success, else non-zero.
1880: */
1881: static int
1882: parse_fwd_field(char **p, struct fwdarg *fwd)
1883: {
1884: char *ep, *cp = *p;
1885: int ispath = 0;
1886:
1887: if (*cp == '\0') {
1888: *p = NULL;
1889: return -1; /* end of string */
1890: }
1891:
1892: /*
1893: * A field escaped with square brackets is used literally.
1894: * XXX - allow ']' to be escaped via backslash?
1895: */
1896: if (*cp == '[') {
1897: /* find matching ']' */
1898: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
1899: if (*ep == '/')
1900: ispath = 1;
1901: }
1902: /* no matching ']' or not at end of field. */
1903: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
1904: return -1;
1905: /* NUL terminate the field and advance p past the colon */
1906: *ep++ = '\0';
1907: if (*ep != '\0')
1908: *ep++ = '\0';
1909: fwd->arg = cp + 1;
1910: fwd->ispath = ispath;
1911: *p = ep;
1912: return 0;
1913: }
1914:
1915: for (cp = *p; *cp != '\0'; cp++) {
1916: switch (*cp) {
1917: case '\\':
1918: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.237 djm 1919: if (*cp == '\0')
1920: return -1;
1.220 millert 1921: break;
1922: case '/':
1923: ispath = 1;
1924: break;
1925: case ':':
1926: *cp++ = '\0';
1927: goto done;
1928: }
1929: }
1930: done:
1931: fwd->arg = *p;
1932: fwd->ispath = ispath;
1933: *p = cp;
1934: return 0;
1935: }
1936:
1.135 djm 1937: /*
1938: * parse_forward
1939: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 1940: * dynamicfwd == 0
1.220 millert 1941: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
1942: * listenpath:connectpath
1.168 stevesk 1943: * dynamicfwd == 1
1944: * [listenhost:]listenport
1.135 djm 1945: * returns number of arguments parsed or zero on error
1946: */
1947: int
1.220 millert 1948: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 1949: {
1.220 millert 1950: struct fwdarg fwdargs[4];
1951: char *p, *cp;
1.135 djm 1952: int i;
1953:
1.220 millert 1954: memset(fwd, 0, sizeof(*fwd));
1955: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 1956:
1957: cp = p = xstrdup(fwdspec);
1958:
1959: /* skip leading spaces */
1.214 deraadt 1960: while (isspace((u_char)*cp))
1.135 djm 1961: cp++;
1962:
1.220 millert 1963: for (i = 0; i < 4; ++i) {
1964: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 1965: break;
1.220 millert 1966: }
1.135 djm 1967:
1.170 stevesk 1968: /* Check for trailing garbage */
1.220 millert 1969: if (cp != NULL && *cp != '\0') {
1.135 djm 1970: i = 0; /* failure */
1.220 millert 1971: }
1.135 djm 1972:
1973: switch (i) {
1.168 stevesk 1974: case 1:
1.220 millert 1975: if (fwdargs[0].ispath) {
1976: fwd->listen_path = xstrdup(fwdargs[0].arg);
1977: fwd->listen_port = PORT_STREAMLOCAL;
1978: } else {
1979: fwd->listen_host = NULL;
1980: fwd->listen_port = a2port(fwdargs[0].arg);
1981: }
1.168 stevesk 1982: fwd->connect_host = xstrdup("socks");
1983: break;
1984:
1985: case 2:
1.220 millert 1986: if (fwdargs[0].ispath && fwdargs[1].ispath) {
1987: fwd->listen_path = xstrdup(fwdargs[0].arg);
1988: fwd->listen_port = PORT_STREAMLOCAL;
1989: fwd->connect_path = xstrdup(fwdargs[1].arg);
1990: fwd->connect_port = PORT_STREAMLOCAL;
1991: } else if (fwdargs[1].ispath) {
1992: fwd->listen_host = NULL;
1993: fwd->listen_port = a2port(fwdargs[0].arg);
1994: fwd->connect_path = xstrdup(fwdargs[1].arg);
1995: fwd->connect_port = PORT_STREAMLOCAL;
1996: } else {
1997: fwd->listen_host = xstrdup(fwdargs[0].arg);
1998: fwd->listen_port = a2port(fwdargs[1].arg);
1999: fwd->connect_host = xstrdup("socks");
2000: }
1.168 stevesk 2001: break;
2002:
1.135 djm 2003: case 3:
1.220 millert 2004: if (fwdargs[0].ispath) {
2005: fwd->listen_path = xstrdup(fwdargs[0].arg);
2006: fwd->listen_port = PORT_STREAMLOCAL;
2007: fwd->connect_host = xstrdup(fwdargs[1].arg);
2008: fwd->connect_port = a2port(fwdargs[2].arg);
2009: } else if (fwdargs[2].ispath) {
2010: fwd->listen_host = xstrdup(fwdargs[0].arg);
2011: fwd->listen_port = a2port(fwdargs[1].arg);
2012: fwd->connect_path = xstrdup(fwdargs[2].arg);
2013: fwd->connect_port = PORT_STREAMLOCAL;
2014: } else {
2015: fwd->listen_host = NULL;
2016: fwd->listen_port = a2port(fwdargs[0].arg);
2017: fwd->connect_host = xstrdup(fwdargs[1].arg);
2018: fwd->connect_port = a2port(fwdargs[2].arg);
2019: }
1.135 djm 2020: break;
2021:
2022: case 4:
1.220 millert 2023: fwd->listen_host = xstrdup(fwdargs[0].arg);
2024: fwd->listen_port = a2port(fwdargs[1].arg);
2025: fwd->connect_host = xstrdup(fwdargs[2].arg);
2026: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 2027: break;
2028: default:
2029: i = 0; /* failure */
2030: }
2031:
1.202 djm 2032: free(p);
1.135 djm 2033:
1.168 stevesk 2034: if (dynamicfwd) {
2035: if (!(i == 1 || i == 2))
2036: goto fail_free;
2037: } else {
1.220 millert 2038: if (!(i == 3 || i == 4)) {
2039: if (fwd->connect_path == NULL &&
2040: fwd->listen_path == NULL)
2041: goto fail_free;
2042: }
2043: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 2044: goto fail_free;
2045: }
2046:
1.220 millert 2047: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2048: (!remotefwd && fwd->listen_port == 0))
1.135 djm 2049: goto fail_free;
2050: if (fwd->connect_host != NULL &&
2051: strlen(fwd->connect_host) >= NI_MAXHOST)
2052: goto fail_free;
1.220 millert 2053: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2054: if (fwd->connect_path != NULL &&
2055: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2056: goto fail_free;
1.176 djm 2057: if (fwd->listen_host != NULL &&
2058: strlen(fwd->listen_host) >= NI_MAXHOST)
2059: goto fail_free;
1.220 millert 2060: if (fwd->listen_path != NULL &&
2061: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2062: goto fail_free;
1.135 djm 2063:
2064: return (i);
2065:
2066: fail_free:
1.202 djm 2067: free(fwd->connect_host);
2068: fwd->connect_host = NULL;
1.220 millert 2069: free(fwd->connect_path);
2070: fwd->connect_path = NULL;
1.202 djm 2071: free(fwd->listen_host);
2072: fwd->listen_host = NULL;
1.220 millert 2073: free(fwd->listen_path);
2074: fwd->listen_path = NULL;
1.135 djm 2075: return (0);
1.221 djm 2076: }
2077:
2078: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2079: static const char *
2080: fmt_multistate_int(int val, const struct multistate *m)
2081: {
2082: u_int i;
2083:
2084: for (i = 0; m[i].key != NULL; i++) {
2085: if (m[i].value == val)
2086: return m[i].key;
2087: }
2088: return "UNKNOWN";
2089: }
2090:
2091: static const char *
2092: fmt_intarg(OpCodes code, int val)
2093: {
2094: if (val == -1)
2095: return "unset";
2096: switch (code) {
2097: case oAddressFamily:
2098: return fmt_multistate_int(val, multistate_addressfamily);
2099: case oVerifyHostKeyDNS:
2100: case oStrictHostKeyChecking:
1.232 djm 2101: case oUpdateHostkeys:
1.221 djm 2102: return fmt_multistate_int(val, multistate_yesnoask);
2103: case oControlMaster:
2104: return fmt_multistate_int(val, multistate_controlmaster);
2105: case oTunnel:
2106: return fmt_multistate_int(val, multistate_tunnel);
2107: case oRequestTTY:
2108: return fmt_multistate_int(val, multistate_requesttty);
2109: case oCanonicalizeHostname:
2110: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.224 djm 2111: case oFingerprintHash:
2112: return ssh_digest_alg_name(val);
1.221 djm 2113: case oProtocol:
2114: switch (val) {
2115: case SSH_PROTO_1:
2116: return "1";
2117: case SSH_PROTO_2:
2118: return "2";
2119: case (SSH_PROTO_1|SSH_PROTO_2):
2120: return "2,1";
2121: default:
2122: return "UNKNOWN";
2123: }
2124: default:
2125: switch (val) {
2126: case 0:
2127: return "no";
2128: case 1:
2129: return "yes";
2130: default:
2131: return "UNKNOWN";
2132: }
2133: }
2134: }
2135:
2136: static const char *
2137: lookup_opcode_name(OpCodes code)
2138: {
2139: u_int i;
2140:
2141: for (i = 0; keywords[i].name != NULL; i++)
2142: if (keywords[i].opcode == code)
2143: return(keywords[i].name);
2144: return "UNKNOWN";
2145: }
2146:
2147: static void
2148: dump_cfg_int(OpCodes code, int val)
2149: {
2150: printf("%s %d\n", lookup_opcode_name(code), val);
2151: }
2152:
2153: static void
2154: dump_cfg_fmtint(OpCodes code, int val)
2155: {
2156: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2157: }
2158:
2159: static void
2160: dump_cfg_string(OpCodes code, const char *val)
2161: {
2162: if (val == NULL)
2163: return;
2164: printf("%s %s\n", lookup_opcode_name(code), val);
2165: }
2166:
2167: static void
2168: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2169: {
2170: u_int i;
2171:
2172: for (i = 0; i < count; i++)
2173: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2174: }
2175:
2176: static void
2177: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2178: {
2179: u_int i;
2180:
2181: printf("%s", lookup_opcode_name(code));
2182: for (i = 0; i < count; i++)
2183: printf(" %s", vals[i]);
2184: printf("\n");
2185: }
2186:
2187: static void
2188: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2189: {
2190: const struct Forward *fwd;
2191: u_int i;
2192:
2193: /* oDynamicForward */
2194: for (i = 0; i < count; i++) {
2195: fwd = &fwds[i];
2196: if (code == oDynamicForward &&
2197: strcmp(fwd->connect_host, "socks") != 0)
2198: continue;
2199: if (code == oLocalForward &&
2200: strcmp(fwd->connect_host, "socks") == 0)
2201: continue;
2202: printf("%s", lookup_opcode_name(code));
2203: if (fwd->listen_port == PORT_STREAMLOCAL)
2204: printf(" %s", fwd->listen_path);
2205: else if (fwd->listen_host == NULL)
2206: printf(" %d", fwd->listen_port);
2207: else {
2208: printf(" [%s]:%d",
2209: fwd->listen_host, fwd->listen_port);
2210: }
2211: if (code != oDynamicForward) {
2212: if (fwd->connect_port == PORT_STREAMLOCAL)
2213: printf(" %s", fwd->connect_path);
2214: else if (fwd->connect_host == NULL)
2215: printf(" %d", fwd->connect_port);
2216: else {
2217: printf(" [%s]:%d",
2218: fwd->connect_host, fwd->connect_port);
2219: }
2220: }
2221: printf("\n");
2222: }
2223: }
2224:
2225: void
2226: dump_client_config(Options *o, const char *host)
2227: {
2228: int i;
2229: char vbuf[5];
2230:
2231: /* Most interesting options first: user, host, port */
2232: dump_cfg_string(oUser, o->user);
2233: dump_cfg_string(oHostName, host);
2234: dump_cfg_int(oPort, o->port);
2235:
2236: /* Flag options */
2237: dump_cfg_fmtint(oAddressFamily, o->address_family);
2238: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2239: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2240: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2241: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2242: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2243: dump_cfg_fmtint(oCompression, o->compression);
2244: dump_cfg_fmtint(oControlMaster, o->control_master);
2245: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
2246: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
1.224 djm 2247: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
1.221 djm 2248: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2249: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2250: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2251: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2252: #ifdef GSSAPI
2253: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2254: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2255: #endif /* GSSAPI */
2256: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2257: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2258: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2259: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2260: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2261: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2262: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2263: dump_cfg_fmtint(oProtocol, o->protocol);
2264: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2265: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2266: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2267: dump_cfg_fmtint(oRhostsRSAAuthentication, o->rhosts_rsa_authentication);
2268: dump_cfg_fmtint(oRSAAuthentication, o->rsa_authentication);
2269: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2270: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2271: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2272: dump_cfg_fmtint(oTunnel, o->tun_open);
2273: dump_cfg_fmtint(oUsePrivilegedPort, o->use_privileged_port);
2274: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2275: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
1.229 djm 2276: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
1.221 djm 2277:
2278: /* Integer options */
2279: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2280: dump_cfg_int(oCompressionLevel, o->compression_level);
2281: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2282: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2283: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2284: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2285: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2286:
2287: /* String options */
2288: dump_cfg_string(oBindAddress, o->bind_address);
2289: dump_cfg_string(oCiphers, o->ciphers ? o->ciphers : KEX_CLIENT_ENCRYPT);
2290: dump_cfg_string(oControlPath, o->control_path);
2291: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms ? o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
2292: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
1.230 djm 2293: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.221 djm 2294: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
2295: dump_cfg_string(oKexAlgorithms, o->kex_algorithms ? o->kex_algorithms : KEX_CLIENT_KEX);
2296: dump_cfg_string(oLocalCommand, o->local_command);
2297: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
2298: dump_cfg_string(oMacs, o->macs ? o->macs : KEX_CLIENT_MAC);
2299: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
2300: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
2301: dump_cfg_string(oProxyCommand, o->proxy_command);
1.230 djm 2302: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
1.221 djm 2303: dump_cfg_string(oXAuthLocation, o->xauth_location);
2304:
1.230 djm 2305: /* Forwards */
1.221 djm 2306: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2307: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2308: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2309:
2310: /* String array options */
2311: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2312: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
2313: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2314: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2315: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
2316:
2317: /* Special cases */
2318:
2319: /* oConnectTimeout */
2320: if (o->connection_timeout == -1)
2321: printf("connecttimeout none\n");
2322: else
2323: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2324:
2325: /* oTunnelDevice */
2326: printf("tunneldevice");
2327: if (o->tun_local == SSH_TUNID_ANY)
2328: printf(" any");
2329: else
2330: printf(" %d", o->tun_local);
2331: if (o->tun_remote == SSH_TUNID_ANY)
2332: printf(":any");
2333: else
2334: printf(":%d", o->tun_remote);
2335: printf("\n");
2336:
2337: /* oCanonicalizePermittedCNAMEs */
2338: if ( o->num_permitted_cnames > 0) {
2339: printf("canonicalizePermittedcnames");
2340: for (i = 0; i < o->num_permitted_cnames; i++) {
2341: printf(" %s:%s", o->permitted_cnames[i].source_list,
2342: o->permitted_cnames[i].target_list);
2343: }
2344: printf("\n");
2345: }
2346:
2347: /* oCipher */
2348: if (o->cipher != SSH_CIPHER_NOT_SET)
2349: printf("Cipher %s\n", cipher_name(o->cipher));
2350:
2351: /* oControlPersist */
2352: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2353: dump_cfg_fmtint(oControlPersist, o->control_persist);
2354: else
2355: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2356:
2357: /* oEscapeChar */
2358: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2359: printf("escapechar none\n");
2360: else {
2361: vis(vbuf, o->escape_char, VIS_WHITE, 0);
2362: printf("escapechar %s\n", vbuf);
2363: }
2364:
2365: /* oIPQoS */
2366: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2367: printf("%s\n", iptos2str(o->ip_qos_bulk));
2368:
2369: /* oRekeyLimit */
2370: printf("rekeylimit %lld %d\n",
2371: (long long)o->rekey_limit, o->rekey_interval);
2372:
2373: /* oStreamLocalBindMask */
2374: printf("streamlocalbindmask 0%o\n",
2375: o->fwd_opts.streamlocal_bind_mask);
1.1 deraadt 2376: }
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