Annotation of src/usr.bin/ssh/readconf.c, Revision 1.222
1.222 ! lteo 1: /* $OpenBSD: readconf.c,v 1.221 2014/10/08 22:20:25 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>
1.200 dtucker 34: #include <util.h>
1.221 djm 35: #include <vis.h>
1.1 deraadt 36:
1.159 deraadt 37: #include "xmalloc.h"
1.1 deraadt 38: #include "ssh.h"
1.25 markus 39: #include "compat.h"
1.58 markus 40: #include "cipher.h"
1.55 markus 41: #include "pathnames.h"
1.58 markus 42: #include "log.h"
1.159 deraadt 43: #include "key.h"
1.220 millert 44: #include "misc.h"
1.58 markus 45: #include "readconf.h"
46: #include "match.h"
1.159 deraadt 47: #include "buffer.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"
1.1 deraadt 52:
53: /* Format of the configuration file:
54:
55: # Configuration data is parsed as follows:
56: # 1. command line options
57: # 2. user-specific file
58: # 3. system-wide file
59: # Any configuration value is only changed the first time it is set.
60: # Thus, host-specific definitions should be at the beginning of the
61: # configuration file, and defaults at the end.
62:
63: # Host-specific declarations. These may override anything above. A single
64: # host may match multiple declarations; these are processed in the order
65: # that they are given in.
66:
67: Host *.ngs.fi ngs.fi
1.96 markus 68: User foo
1.1 deraadt 69:
70: Host fake.com
71: HostName another.host.name.real.org
72: User blaah
73: Port 34289
74: ForwardX11 no
75: ForwardAgent no
76:
77: Host books.com
78: RemoteForward 9999 shadows.cs.hut.fi:9999
79: Cipher 3des
80:
81: Host fascist.blob.com
82: Port 23123
83: User tylonen
84: PasswordAuthentication no
85:
86: Host puukko.hut.fi
87: User t35124p
88: ProxyCommand ssh-proxy %h %p
89:
90: Host *.fr
1.96 markus 91: PublicKeyAuthentication no
1.1 deraadt 92:
93: Host *.su
94: Cipher none
95: PasswordAuthentication no
96:
1.144 reyk 97: Host vpn.fake.com
98: Tunnel yes
99: TunnelDevice 3
100:
1.1 deraadt 101: # Defaults for various options
102: Host *
103: ForwardAgent no
1.50 markus 104: ForwardX11 no
1.1 deraadt 105: PasswordAuthentication yes
106: RSAAuthentication yes
107: RhostsRSAAuthentication yes
108: StrictHostKeyChecking yes
1.126 markus 109: TcpKeepAlive no
1.1 deraadt 110: IdentityFile ~/.ssh/identity
111: Port 22
112: EscapeChar ~
113:
114: */
115:
116: /* Keyword tokens. */
117:
1.17 markus 118: typedef enum {
119: oBadOption,
1.206 djm 120: oHost, oMatch,
1.186 djm 121: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
122: oGatewayPorts, oExitOnForwardFailure,
1.100 deraadt 123: oPasswordAuthentication, oRSAAuthentication,
1.59 markus 124: oChallengeResponseAuthentication, oXAuthLocation,
1.17 markus 125: oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward,
1.206 djm 126: oUser, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand,
1.17 markus 127: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
128: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.126 markus 129: oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts,
1.62 markus 130: oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs,
1.221 djm 131: oPubkeyAuthentication,
1.67 markus 132: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
1.76 markus 133: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.183 markus 134: oHostKeyAlgorithms, oBindAddress, oPKCS11Provider,
1.96 markus 135: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
1.111 djm 136: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
1.118 markus 137: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
1.128 markus 138: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.187 djm 139: oSendEnv, oControlPath, oControlMaster, oControlPersist,
140: oHashKnownHosts,
1.144 reyk 141: oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
1.216 djm 142: oVisualHostKey, oUseRoaming,
1.205 djm 143: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
1.209 djm 144: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
145: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.220 millert 146: oStreamLocalBindMask, oStreamLocalBindUnlink,
1.199 djm 147: oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 deraadt 148: } OpCodes;
149:
150: /* Textual representations of the tokens. */
151:
1.17 markus 152: static struct {
153: const char *name;
154: OpCodes opcode;
155: } keywords[] = {
156: { "forwardagent", oForwardAgent },
157: { "forwardx11", oForwardX11 },
1.123 markus 158: { "forwardx11trusted", oForwardX11Trusted },
1.186 djm 159: { "forwardx11timeout", oForwardX11Timeout },
1.153 markus 160: { "exitonforwardfailure", oExitOnForwardFailure },
1.34 markus 161: { "xauthlocation", oXAuthLocation },
1.17 markus 162: { "gatewayports", oGatewayPorts },
163: { "useprivilegedport", oUsePrivilegedPort },
1.116 markus 164: { "rhostsauthentication", oDeprecated },
1.17 markus 165: { "passwordauthentication", oPasswordAuthentication },
1.48 markus 166: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
167: { "kbdinteractivedevices", oKbdInteractiveDevices },
1.17 markus 168: { "rsaauthentication", oRSAAuthentication },
1.50 markus 169: { "pubkeyauthentication", oPubkeyAuthentication },
1.59 markus 170: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
1.72 markus 171: { "rhostsrsaauthentication", oRhostsRSAAuthentication },
1.73 markus 172: { "hostbasedauthentication", oHostbasedAuthentication },
1.59 markus 173: { "challengeresponseauthentication", oChallengeResponseAuthentication },
174: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
175: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
1.110 jakob 176: { "kerberosauthentication", oUnsupported },
177: { "kerberostgtpassing", oUnsupported },
178: { "afstokenpassing", oUnsupported },
1.118 markus 179: #if defined(GSSAPI)
180: { "gssapiauthentication", oGssAuthentication },
181: { "gssapidelegatecredentials", oGssDelegateCreds },
182: #else
183: { "gssapiauthentication", oUnsupported },
184: { "gssapidelegatecredentials", oUnsupported },
185: #endif
1.96 markus 186: { "fallbacktorsh", oDeprecated },
187: { "usersh", oDeprecated },
1.17 markus 188: { "identityfile", oIdentityFile },
1.174 stevesk 189: { "identityfile2", oIdentityFile }, /* obsolete */
1.128 markus 190: { "identitiesonly", oIdentitiesOnly },
1.17 markus 191: { "hostname", oHostName },
1.52 markus 192: { "hostkeyalias", oHostKeyAlias },
1.17 markus 193: { "proxycommand", oProxyCommand },
194: { "port", oPort },
195: { "cipher", oCipher },
1.25 markus 196: { "ciphers", oCiphers },
1.62 markus 197: { "macs", oMacs },
1.25 markus 198: { "protocol", oProtocol },
1.17 markus 199: { "remoteforward", oRemoteForward },
200: { "localforward", oLocalForward },
201: { "user", oUser },
202: { "host", oHost },
1.206 djm 203: { "match", oMatch },
1.17 markus 204: { "escapechar", oEscapeChar },
205: { "globalknownhostsfile", oGlobalKnownHostsFile },
1.193 djm 206: { "globalknownhostsfile2", oDeprecated },
1.174 stevesk 207: { "userknownhostsfile", oUserKnownHostsFile },
1.221 djm 208: { "userknownhostsfile2", oDeprecated },
1.17 markus 209: { "connectionattempts", oConnectionAttempts },
210: { "batchmode", oBatchMode },
211: { "checkhostip", oCheckHostIP },
212: { "stricthostkeychecking", oStrictHostKeyChecking },
213: { "compression", oCompression },
214: { "compressionlevel", oCompressionLevel },
1.126 markus 215: { "tcpkeepalive", oTCPKeepAlive },
216: { "keepalive", oTCPKeepAlive }, /* obsolete */
1.17 markus 217: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
218: { "loglevel", oLogLevel },
1.71 markus 219: { "dynamicforward", oDynamicForward },
1.67 markus 220: { "preferredauthentications", oPreferredAuthentications },
1.76 markus 221: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.77 markus 222: { "bindaddress", oBindAddress },
1.183 markus 223: #ifdef ENABLE_PKCS11
224: { "smartcarddevice", oPKCS11Provider },
225: { "pkcs11provider", oPKCS11Provider },
1.110 jakob 226: #else
227: { "smartcarddevice", oUnsupported },
1.183 markus 228: { "pkcs11provider", oUnsupported },
1.110 jakob 229: #endif
1.93 deraadt 230: { "clearallforwardings", oClearAllForwardings },
1.101 markus 231: { "enablesshkeysign", oEnableSSHKeysign },
1.107 jakob 232: { "verifyhostkeydns", oVerifyHostKeyDNS },
1.93 deraadt 233: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
1.105 markus 234: { "rekeylimit", oRekeyLimit },
1.111 djm 235: { "connecttimeout", oConnectTimeout },
1.112 djm 236: { "addressfamily", oAddressFamily },
1.127 markus 237: { "serveraliveinterval", oServerAliveInterval },
238: { "serveralivecountmax", oServerAliveCountMax },
1.130 djm 239: { "sendenv", oSendEnv },
1.132 djm 240: { "controlpath", oControlPath },
241: { "controlmaster", oControlMaster },
1.187 djm 242: { "controlpersist", oControlPersist },
1.136 djm 243: { "hashknownhosts", oHashKnownHosts },
1.144 reyk 244: { "tunnel", oTunnel },
245: { "tunneldevice", oTunnelDevice },
246: { "localcommand", oLocalCommand },
247: { "permitlocalcommand", oPermitLocalCommand },
1.167 grunk 248: { "visualhostkey", oVisualHostKey },
1.177 andreas 249: { "useroaming", oUseRoaming },
1.189 djm 250: { "kexalgorithms", oKexAlgorithms },
1.190 djm 251: { "ipqos", oIPQoS },
1.192 djm 252: { "requesttty", oRequestTTY },
1.205 djm 253: { "proxyusefdpass", oProxyUseFdpass },
1.208 djm 254: { "canonicaldomains", oCanonicalDomains },
1.209 djm 255: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
256: { "canonicalizehostname", oCanonicalizeHostname },
257: { "canonicalizemaxdots", oCanonicalizeMaxDots },
258: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
1.220 millert 259: { "streamlocalbindmask", oStreamLocalBindMask },
260: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.199 djm 261: { "ignoreunknown", oIgnoreUnknown },
1.171 djm 262:
1.92 stevesk 263: { NULL, oBadOption }
1.13 markus 264: };
265:
1.19 markus 266: /*
267: * Adds a local TCP/IP port forward to options. Never returns if there is an
268: * error.
269: */
1.1 deraadt 270:
1.26 markus 271: void
1.220 millert 272: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 273: {
1.220 millert 274: struct Forward *fwd;
1.17 markus 275: extern uid_t original_real_uid;
1.185 djm 276:
1.220 millert 277: if (newfwd->listen_port < IPPORT_RESERVED && original_real_uid != 0 &&
278: newfwd->listen_path == NULL)
1.64 millert 279: fatal("Privileged ports can only be forwarded by root.");
1.185 djm 280: options->local_forwards = xrealloc(options->local_forwards,
281: options->num_local_forwards + 1,
282: sizeof(*options->local_forwards));
1.17 markus 283: fwd = &options->local_forwards[options->num_local_forwards++];
1.135 djm 284:
1.172 stevesk 285: fwd->listen_host = newfwd->listen_host;
1.135 djm 286: fwd->listen_port = newfwd->listen_port;
1.220 millert 287: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 288: fwd->connect_host = newfwd->connect_host;
1.135 djm 289: fwd->connect_port = newfwd->connect_port;
1.220 millert 290: fwd->connect_path = newfwd->connect_path;
1.1 deraadt 291: }
292:
1.19 markus 293: /*
294: * Adds a remote TCP/IP port forward to options. Never returns if there is
295: * an error.
296: */
1.1 deraadt 297:
1.26 markus 298: void
1.220 millert 299: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 deraadt 300: {
1.220 millert 301: struct Forward *fwd;
1.185 djm 302:
303: options->remote_forwards = xrealloc(options->remote_forwards,
304: options->num_remote_forwards + 1,
305: sizeof(*options->remote_forwards));
1.17 markus 306: fwd = &options->remote_forwards[options->num_remote_forwards++];
1.135 djm 307:
1.172 stevesk 308: fwd->listen_host = newfwd->listen_host;
1.135 djm 309: fwd->listen_port = newfwd->listen_port;
1.220 millert 310: fwd->listen_path = newfwd->listen_path;
1.172 stevesk 311: fwd->connect_host = newfwd->connect_host;
1.135 djm 312: fwd->connect_port = newfwd->connect_port;
1.220 millert 313: fwd->connect_path = newfwd->connect_path;
1.194 markus 314: fwd->handle = newfwd->handle;
1.184 markus 315: fwd->allocated_port = 0;
1.1 deraadt 316: }
317:
1.90 stevesk 318: static void
319: clear_forwardings(Options *options)
320: {
321: int i;
322:
1.135 djm 323: for (i = 0; i < options->num_local_forwards; i++) {
1.202 djm 324: free(options->local_forwards[i].listen_host);
1.220 millert 325: free(options->local_forwards[i].listen_path);
1.202 djm 326: free(options->local_forwards[i].connect_host);
1.220 millert 327: free(options->local_forwards[i].connect_path);
1.135 djm 328: }
1.185 djm 329: if (options->num_local_forwards > 0) {
1.202 djm 330: free(options->local_forwards);
1.185 djm 331: options->local_forwards = NULL;
332: }
1.90 stevesk 333: options->num_local_forwards = 0;
1.135 djm 334: for (i = 0; i < options->num_remote_forwards; i++) {
1.202 djm 335: free(options->remote_forwards[i].listen_host);
1.220 millert 336: free(options->remote_forwards[i].listen_path);
1.202 djm 337: free(options->remote_forwards[i].connect_host);
1.220 millert 338: free(options->remote_forwards[i].connect_path);
1.135 djm 339: }
1.185 djm 340: if (options->num_remote_forwards > 0) {
1.202 djm 341: free(options->remote_forwards);
1.185 djm 342: options->remote_forwards = NULL;
343: }
1.90 stevesk 344: options->num_remote_forwards = 0;
1.145 reyk 345: options->tun_open = SSH_TUNMODE_NO;
1.90 stevesk 346: }
347:
1.195 dtucker 348: void
349: add_identity_file(Options *options, const char *dir, const char *filename,
350: int userprovided)
351: {
352: char *path;
1.219 djm 353: int i;
1.195 dtucker 354:
355: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
356: fatal("Too many identity files specified (max %d)",
357: SSH_MAX_IDENTITY_FILES);
358:
359: if (dir == NULL) /* no dir, filename is absolute */
360: path = xstrdup(filename);
361: else
362: (void)xasprintf(&path, "%.100s%.100s", dir, filename);
1.219 djm 363:
364: /* Avoid registering duplicates */
365: for (i = 0; i < options->num_identity_files; i++) {
366: if (options->identity_file_userprovided[i] == userprovided &&
367: strcmp(options->identity_files[i], path) == 0) {
368: debug2("%s: ignoring duplicate key %s", __func__, path);
369: free(path);
370: return;
371: }
372: }
1.195 dtucker 373:
374: options->identity_file_userprovided[options->num_identity_files] =
375: userprovided;
376: options->identity_files[options->num_identity_files++] = path;
377: }
378:
1.206 djm 379: int
380: default_ssh_port(void)
381: {
382: static int port;
383: struct servent *sp;
384:
385: if (port == 0) {
386: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
387: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
388: }
389: return port;
390: }
391:
392: /*
393: * Execute a command in a shell.
394: * Return its exit status or -1 on abnormal exit.
395: */
396: static int
397: execute_in_shell(const char *cmd)
398: {
399: char *shell, *command_string;
400: pid_t pid;
401: int devnull, status;
402: extern uid_t original_real_uid;
403:
404: if ((shell = getenv("SHELL")) == NULL)
405: shell = _PATH_BSHELL;
406:
407: /*
408: * Use "exec" to avoid "sh -c" processes on some platforms
409: * (e.g. Solaris)
410: */
411: xasprintf(&command_string, "exec %s", cmd);
412:
413: /* Need this to redirect subprocess stdin/out */
414: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
415: fatal("open(/dev/null): %s", strerror(errno));
416:
417: debug("Executing command: '%.500s'", cmd);
418:
419: /* Fork and execute the command. */
420: if ((pid = fork()) == 0) {
421: char *argv[4];
422:
423: /* Child. Permanently give up superuser privileges. */
424: permanently_drop_suid(original_real_uid);
425:
426: /* Redirect child stdin and stdout. Leave stderr */
427: if (dup2(devnull, STDIN_FILENO) == -1)
428: fatal("dup2: %s", strerror(errno));
429: if (dup2(devnull, STDOUT_FILENO) == -1)
430: fatal("dup2: %s", strerror(errno));
431: if (devnull > STDERR_FILENO)
432: close(devnull);
433: closefrom(STDERR_FILENO + 1);
434:
435: argv[0] = shell;
436: argv[1] = "-c";
437: argv[2] = command_string;
438: argv[3] = NULL;
439:
440: execv(argv[0], argv);
441: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
442: /* Die with signal to make this error apparent to parent. */
443: signal(SIGTERM, SIG_DFL);
444: kill(getpid(), SIGTERM);
445: _exit(1);
446: }
447: /* Parent. */
448: if (pid < 0)
449: fatal("%s: fork: %.100s", __func__, strerror(errno));
450:
451: close(devnull);
452: free(command_string);
453:
454: while (waitpid(pid, &status, 0) == -1) {
455: if (errno != EINTR && errno != EAGAIN)
456: fatal("%s: waitpid: %s", __func__, strerror(errno));
457: }
458: if (!WIFEXITED(status)) {
459: error("command '%.100s' exited abnormally", cmd);
460: return -1;
1.221 djm 461: }
1.206 djm 462: debug3("command returned status %d", WEXITSTATUS(status));
463: return WEXITSTATUS(status);
464: }
465:
466: /*
467: * Parse and execute a Match directive.
468: */
469: static int
470: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.221 djm 471: const char *host_arg, const char *original_host, int post_canon,
472: const char *filename, int linenum)
1.206 djm 473: {
1.221 djm 474: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.211 djm 475: const char *ruser;
1.221 djm 476: int r, port, this_result, result = 1, attributes = 0, negate;
1.206 djm 477: size_t len;
478: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
479:
480: /*
481: * Configuration is likely to be incomplete at this point so we
482: * must be prepared to use default values.
483: */
484: port = options->port <= 0 ? default_ssh_port() : options->port;
485: ruser = options->user == NULL ? pw->pw_name : options->user;
1.211 djm 486: if (options->hostname != NULL) {
1.212 djm 487: /* NB. Please keep in sync with ssh.c:main() */
1.211 djm 488: host = percent_expand(options->hostname,
489: "h", host_arg, (char *)NULL);
490: } else
491: host = xstrdup(host_arg);
1.206 djm 492:
1.221 djm 493: debug2("checking match for '%s' host %s originally %s",
494: cp, host, original_host);
495: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
496: criteria = NULL;
497: this_result = 1;
498: if ((negate = attrib[0] == '!'))
499: attrib++;
500: /* criteria "all" and "canonical" have no argument */
1.213 dtucker 501: if (strcasecmp(attrib, "all") == 0) {
1.221 djm 502: if (attributes > 1 ||
1.213 dtucker 503: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.221 djm 504: error("%.200s line %d: '%s' cannot be combined "
505: "with other Match attributes",
506: filename, linenum, oattrib);
1.213 dtucker 507: result = -1;
508: goto out;
509: }
1.221 djm 510: if (result)
511: result = negate ? 0 : 1;
1.213 dtucker 512: goto out;
513: }
1.221 djm 514: attributes++;
515: if (strcasecmp(attrib, "canonical") == 0) {
516: r = !!post_canon; /* force bitmask member to boolean */
517: if (r == (negate ? 1 : 0))
518: this_result = result = 0;
519: debug3("%.200s line %d: %smatched '%s'",
520: filename, linenum,
521: this_result ? "" : "not ", oattrib);
522: continue;
523: }
524: /* All other criteria require an argument */
1.206 djm 525: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
526: error("Missing Match criteria for %s", attrib);
1.211 djm 527: result = -1;
528: goto out;
1.206 djm 529: }
530: len = strlen(arg);
531: if (strcasecmp(attrib, "host") == 0) {
1.221 djm 532: criteria = xstrdup(host);
533: r = match_hostname(host, arg, len) == 1;
534: if (r == (negate ? 1 : 0))
535: this_result = result = 0;
1.206 djm 536: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.221 djm 537: criteria = xstrdup(original_host);
538: r = match_hostname(original_host, arg, len) == 1;
539: if (r == (negate ? 1 : 0))
540: this_result = result = 0;
1.206 djm 541: } else if (strcasecmp(attrib, "user") == 0) {
1.221 djm 542: criteria = xstrdup(ruser);
543: r = match_pattern_list(ruser, arg, len, 0) == 1;
544: if (r == (negate ? 1 : 0))
545: this_result = result = 0;
1.206 djm 546: } else if (strcasecmp(attrib, "localuser") == 0) {
1.221 djm 547: criteria = xstrdup(pw->pw_name);
548: r = match_pattern_list(pw->pw_name, arg, len, 0) == 1;
549: if (r == (negate ? 1 : 0))
550: this_result = result = 0;
1.210 djm 551: } else if (strcasecmp(attrib, "exec") == 0) {
1.206 djm 552: if (gethostname(thishost, sizeof(thishost)) == -1)
553: fatal("gethostname: %s", strerror(errno));
554: strlcpy(shorthost, thishost, sizeof(shorthost));
555: shorthost[strcspn(thishost, ".")] = '\0';
556: snprintf(portstr, sizeof(portstr), "%d", port);
557:
558: cmd = percent_expand(arg,
559: "L", shorthost,
560: "d", pw->pw_dir,
561: "h", host,
562: "l", thishost,
1.221 djm 563: "n", original_host,
1.206 djm 564: "p", portstr,
565: "r", ruser,
566: "u", pw->pw_name,
567: (char *)NULL);
1.217 djm 568: if (result != 1) {
569: /* skip execution if prior predicate failed */
1.221 djm 570: debug3("%.200s line %d: skipped exec "
571: "\"%.100s\"", filename, linenum, cmd);
572: free(cmd);
573: continue;
574: }
575: r = execute_in_shell(cmd);
576: if (r == -1) {
577: fatal("%.200s line %d: match exec "
578: "'%.100s' error", filename,
579: linenum, cmd);
1.217 djm 580: }
1.221 djm 581: criteria = xstrdup(cmd);
1.206 djm 582: free(cmd);
1.221 djm 583: /* Force exit status to boolean */
584: r = r == 0;
585: if (r == (negate ? 1 : 0))
586: this_result = result = 0;
1.206 djm 587: } else {
588: error("Unsupported Match attribute %s", attrib);
1.211 djm 589: result = -1;
590: goto out;
1.206 djm 591: }
1.221 djm 592: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
593: filename, linenum, this_result ? "": "not ",
594: oattrib, criteria);
595: free(criteria);
1.213 dtucker 596: }
597: if (attributes == 0) {
598: error("One or more attributes required for Match");
599: result = -1;
600: goto out;
1.206 djm 601: }
1.221 djm 602: out:
603: if (result != -1)
604: debug2("match %sfound", result ? "" : "not ");
1.206 djm 605: *condition = cp;
1.211 djm 606: free(host);
1.206 djm 607: return result;
608: }
609:
1.208 djm 610: /* Check and prepare a domain name: removes trailing '.' and lowercases */
611: static void
612: valid_domain(char *name, const char *filename, int linenum)
613: {
614: size_t i, l = strlen(name);
615: u_char c, last = '\0';
616:
617: if (l == 0)
618: fatal("%s line %d: empty hostname suffix", filename, linenum);
619: if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0]))
620: fatal("%s line %d: hostname suffix \"%.100s\" "
621: "starts with invalid character", filename, linenum, name);
622: for (i = 0; i < l; i++) {
623: c = tolower((u_char)name[i]);
624: name[i] = (char)c;
625: if (last == '.' && c == '.')
626: fatal("%s line %d: hostname suffix \"%.100s\" contains "
627: "consecutive separators", filename, linenum, name);
628: if (c != '.' && c != '-' && !isalnum(c) &&
629: c != '_') /* technically invalid, but common */
630: fatal("%s line %d: hostname suffix \"%.100s\" contains "
631: "invalid characters", filename, linenum, name);
632: last = c;
633: }
634: if (name[l - 1] == '.')
635: name[l - 1] = '\0';
636: }
637:
1.19 markus 638: /*
1.70 stevesk 639: * Returns the number of the token pointed to by cp or oBadOption.
1.19 markus 640: */
1.26 markus 641: static OpCodes
1.199 djm 642: parse_token(const char *cp, const char *filename, int linenum,
643: const char *ignored_unknown)
1.1 deraadt 644: {
1.199 djm 645: int i;
1.1 deraadt 646:
1.17 markus 647: for (i = 0; keywords[i].name; i++)
1.199 djm 648: if (strcmp(cp, keywords[i].name) == 0)
1.17 markus 649: return keywords[i].opcode;
1.199 djm 650: if (ignored_unknown != NULL && match_pattern_list(cp, ignored_unknown,
651: strlen(ignored_unknown), 1) == 1)
652: return oIgnoredUnknownOption;
1.75 stevesk 653: error("%s: line %d: Bad configuration option: %s",
654: filename, linenum, cp);
1.17 markus 655: return oBadOption;
1.1 deraadt 656: }
657:
1.207 djm 658: /* Multistate option parsing */
659: struct multistate {
660: char *key;
661: int value;
662: };
663: static const struct multistate multistate_flag[] = {
664: { "true", 1 },
665: { "false", 0 },
666: { "yes", 1 },
667: { "no", 0 },
668: { NULL, -1 }
669: };
670: static const struct multistate multistate_yesnoask[] = {
671: { "true", 1 },
672: { "false", 0 },
673: { "yes", 1 },
674: { "no", 0 },
675: { "ask", 2 },
676: { NULL, -1 }
677: };
678: static const struct multistate multistate_addressfamily[] = {
679: { "inet", AF_INET },
680: { "inet6", AF_INET6 },
681: { "any", AF_UNSPEC },
682: { NULL, -1 }
683: };
684: static const struct multistate multistate_controlmaster[] = {
685: { "true", SSHCTL_MASTER_YES },
686: { "yes", SSHCTL_MASTER_YES },
687: { "false", SSHCTL_MASTER_NO },
688: { "no", SSHCTL_MASTER_NO },
689: { "auto", SSHCTL_MASTER_AUTO },
690: { "ask", SSHCTL_MASTER_ASK },
691: { "autoask", SSHCTL_MASTER_AUTO_ASK },
692: { NULL, -1 }
693: };
694: static const struct multistate multistate_tunnel[] = {
695: { "ethernet", SSH_TUNMODE_ETHERNET },
696: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
697: { "true", SSH_TUNMODE_DEFAULT },
698: { "yes", SSH_TUNMODE_DEFAULT },
699: { "false", SSH_TUNMODE_NO },
700: { "no", SSH_TUNMODE_NO },
701: { NULL, -1 }
702: };
703: static const struct multistate multistate_requesttty[] = {
704: { "true", REQUEST_TTY_YES },
705: { "yes", REQUEST_TTY_YES },
706: { "false", REQUEST_TTY_NO },
707: { "no", REQUEST_TTY_NO },
708: { "force", REQUEST_TTY_FORCE },
709: { "auto", REQUEST_TTY_AUTO },
710: { NULL, -1 }
711: };
1.209 djm 712: static const struct multistate multistate_canonicalizehostname[] = {
1.208 djm 713: { "true", SSH_CANONICALISE_YES },
714: { "false", SSH_CANONICALISE_NO },
715: { "yes", SSH_CANONICALISE_YES },
716: { "no", SSH_CANONICALISE_NO },
717: { "always", SSH_CANONICALISE_ALWAYS },
718: { NULL, -1 }
719: };
1.207 djm 720:
1.19 markus 721: /*
722: * Processes a single option line as used in the configuration files. This
723: * only sets those values that have not already been set.
724: */
1.102 markus 725: #define WHITESPACE " \t\r\n"
1.14 markus 726: int
1.206 djm 727: process_config_line(Options *options, struct passwd *pw, const char *host,
1.221 djm 728: const char *original_host, char *line, const char *filename,
729: int linenum, int *activep, int flags)
1.1 deraadt 730: {
1.193 djm 731: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
732: char **cpptr, fwdarg[256];
1.199 djm 733: u_int i, *uintptr, max_entries = 0;
1.206 djm 734: int negated, opcode, *intptr, value, value2, cmdline = 0;
1.164 dtucker 735: LogLevel *log_level_ptr;
1.201 dtucker 736: long long val64;
1.102 markus 737: size_t len;
1.220 millert 738: struct Forward fwd;
1.207 djm 739: const struct multistate *multistate_ptr;
1.208 djm 740: struct allowed_cname *cname;
1.106 djm 741:
1.206 djm 742: if (activep == NULL) { /* We are processing a command line directive */
743: cmdline = 1;
744: activep = &cmdline;
745: }
746:
1.106 djm 747: /* Strip trailing whitespace */
1.139 deraadt 748: for (len = strlen(line) - 1; len > 0; len--) {
1.106 djm 749: if (strchr(WHITESPACE, line[len]) == NULL)
750: break;
751: line[len] = '\0';
752: }
1.1 deraadt 753:
1.42 provos 754: s = line;
755: /* Get the keyword. (Each line is supposed to begin with a keyword). */
1.149 djm 756: if ((keyword = strdelim(&s)) == NULL)
757: return 0;
1.42 provos 758: /* Ignore leading whitespace. */
759: if (*keyword == '\0')
1.43 markus 760: keyword = strdelim(&s);
1.56 deraadt 761: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
1.17 markus 762: return 0;
1.199 djm 763: /* Match lowercase keyword */
1.207 djm 764: lowercase(keyword);
1.17 markus 765:
1.199 djm 766: opcode = parse_token(keyword, filename, linenum,
767: options->ignored_unknown);
1.17 markus 768:
769: switch (opcode) {
770: case oBadOption:
1.19 markus 771: /* don't panic, but count bad options */
772: return -1;
1.17 markus 773: /* NOTREACHED */
1.199 djm 774: case oIgnoredUnknownOption:
775: debug("%s line %d: Ignored unknown option \"%s\"",
776: filename, linenum, keyword);
777: return 0;
1.111 djm 778: case oConnectTimeout:
779: intptr = &options->connection_timeout;
1.127 markus 780: parse_time:
1.111 djm 781: arg = strdelim(&s);
782: if (!arg || *arg == '\0')
783: fatal("%s line %d: missing time value.",
784: filename, linenum);
1.221 djm 785: if (strcmp(arg, "none") == 0)
786: value = -1;
787: else if ((value = convtime(arg)) == -1)
1.111 djm 788: fatal("%s line %d: invalid time value.",
789: filename, linenum);
1.160 dtucker 790: if (*activep && *intptr == -1)
1.111 djm 791: *intptr = value;
792: break;
793:
1.17 markus 794: case oForwardAgent:
795: intptr = &options->forward_agent;
1.207 djm 796: parse_flag:
797: multistate_ptr = multistate_flag;
798: parse_multistate:
1.42 provos 799: arg = strdelim(&s);
1.40 ho 800: if (!arg || *arg == '\0')
1.207 djm 801: fatal("%s line %d: missing argument.",
802: filename, linenum);
803: value = -1;
804: for (i = 0; multistate_ptr[i].key != NULL; i++) {
805: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
806: value = multistate_ptr[i].value;
807: break;
808: }
809: }
810: if (value == -1)
811: fatal("%s line %d: unsupported option \"%s\".",
812: filename, linenum, arg);
1.17 markus 813: if (*activep && *intptr == -1)
814: *intptr = value;
815: break;
816:
817: case oForwardX11:
818: intptr = &options->forward_x11;
819: goto parse_flag;
820:
1.123 markus 821: case oForwardX11Trusted:
822: intptr = &options->forward_x11_trusted;
823: goto parse_flag;
1.221 djm 824:
1.186 djm 825: case oForwardX11Timeout:
826: intptr = &options->forward_x11_timeout;
827: goto parse_time;
1.123 markus 828:
1.17 markus 829: case oGatewayPorts:
1.220 millert 830: intptr = &options->fwd_opts.gateway_ports;
1.17 markus 831: goto parse_flag;
832:
1.153 markus 833: case oExitOnForwardFailure:
834: intptr = &options->exit_on_forward_failure;
835: goto parse_flag;
836:
1.17 markus 837: case oUsePrivilegedPort:
838: intptr = &options->use_privileged_port;
839: goto parse_flag;
840:
841: case oPasswordAuthentication:
842: intptr = &options->password_authentication;
843: goto parse_flag;
844:
1.48 markus 845: case oKbdInteractiveAuthentication:
846: intptr = &options->kbd_interactive_authentication;
847: goto parse_flag;
848:
849: case oKbdInteractiveDevices:
850: charptr = &options->kbd_interactive_devices;
851: goto parse_string;
852:
1.50 markus 853: case oPubkeyAuthentication:
854: intptr = &options->pubkey_authentication;
1.30 markus 855: goto parse_flag;
856:
1.17 markus 857: case oRSAAuthentication:
858: intptr = &options->rsa_authentication;
859: goto parse_flag;
860:
861: case oRhostsRSAAuthentication:
862: intptr = &options->rhosts_rsa_authentication;
863: goto parse_flag;
864:
1.72 markus 865: case oHostbasedAuthentication:
866: intptr = &options->hostbased_authentication;
867: goto parse_flag;
868:
1.59 markus 869: case oChallengeResponseAuthentication:
1.78 markus 870: intptr = &options->challenge_response_authentication;
1.17 markus 871: goto parse_flag;
1.108 jakob 872:
1.118 markus 873: case oGssAuthentication:
874: intptr = &options->gss_authentication;
875: goto parse_flag;
876:
877: case oGssDelegateCreds:
878: intptr = &options->gss_deleg_creds;
879: goto parse_flag;
880:
1.17 markus 881: case oBatchMode:
882: intptr = &options->batch_mode;
883: goto parse_flag;
884:
885: case oCheckHostIP:
886: intptr = &options->check_host_ip;
1.167 grunk 887: goto parse_flag;
1.17 markus 888:
1.107 jakob 889: case oVerifyHostKeyDNS:
890: intptr = &options->verify_host_key_dns;
1.207 djm 891: multistate_ptr = multistate_yesnoask;
892: goto parse_multistate;
1.107 jakob 893:
1.17 markus 894: case oStrictHostKeyChecking:
895: intptr = &options->strict_host_key_checking;
1.207 djm 896: multistate_ptr = multistate_yesnoask;
897: goto parse_multistate;
1.17 markus 898:
899: case oCompression:
900: intptr = &options->compression;
901: goto parse_flag;
902:
1.126 markus 903: case oTCPKeepAlive:
904: intptr = &options->tcp_keep_alive;
1.17 markus 905: goto parse_flag;
906:
1.91 markus 907: case oNoHostAuthenticationForLocalhost:
908: intptr = &options->no_host_authentication_for_localhost;
909: goto parse_flag;
910:
1.17 markus 911: case oNumberOfPasswordPrompts:
912: intptr = &options->number_of_password_prompts;
913: goto parse_int;
914:
915: case oCompressionLevel:
916: intptr = &options->compression_level;
917: goto parse_int;
918:
1.105 markus 919: case oRekeyLimit:
920: arg = strdelim(&s);
921: if (!arg || *arg == '\0')
1.198 dtucker 922: fatal("%.200s line %d: Missing argument.", filename,
923: linenum);
924: if (strcmp(arg, "default") == 0) {
925: val64 = 0;
926: } else {
1.200 dtucker 927: if (scan_scaled(arg, &val64) == -1)
928: fatal("%.200s line %d: Bad number '%s': %s",
929: filename, linenum, arg, strerror(errno));
930: /* check for too-large or too-small limits */
931: if (val64 > UINT_MAX)
1.198 dtucker 932: fatal("%.200s line %d: RekeyLimit too large",
933: filename, linenum);
934: if (val64 != 0 && val64 < 16)
935: fatal("%.200s line %d: RekeyLimit too small",
936: filename, linenum);
1.105 markus 937: }
1.165 djm 938: if (*activep && options->rekey_limit == -1)
939: options->rekey_limit = (u_int32_t)val64;
1.198 dtucker 940: if (s != NULL) { /* optional rekey interval present */
941: if (strcmp(s, "none") == 0) {
942: (void)strdelim(&s); /* discard */
943: break;
944: }
945: intptr = &options->rekey_interval;
946: goto parse_time;
947: }
1.105 markus 948: break;
949:
1.17 markus 950: case oIdentityFile:
1.42 provos 951: arg = strdelim(&s);
1.40 ho 952: if (!arg || *arg == '\0')
1.17 markus 953: fatal("%.200s line %d: Missing argument.", filename, linenum);
954: if (*activep) {
1.50 markus 955: intptr = &options->num_identity_files;
1.27 markus 956: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1.17 markus 957: fatal("%.200s line %d: Too many identity files specified (max %d).",
1.93 deraadt 958: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.221 djm 959: add_identity_file(options, NULL,
960: arg, flags & SSHCONF_USERCONF);
1.17 markus 961: }
962: break;
963:
1.34 markus 964: case oXAuthLocation:
965: charptr=&options->xauth_location;
966: goto parse_string;
967:
1.17 markus 968: case oUser:
969: charptr = &options->user;
970: parse_string:
1.42 provos 971: arg = strdelim(&s);
1.40 ho 972: if (!arg || *arg == '\0')
1.193 djm 973: fatal("%.200s line %d: Missing argument.",
974: filename, linenum);
1.17 markus 975: if (*activep && *charptr == NULL)
1.38 provos 976: *charptr = xstrdup(arg);
1.17 markus 977: break;
978:
979: case oGlobalKnownHostsFile:
1.193 djm 980: cpptr = (char **)&options->system_hostfiles;
981: uintptr = &options->num_system_hostfiles;
982: max_entries = SSH_MAX_HOSTS_FILES;
983: parse_char_array:
984: if (*activep && *uintptr == 0) {
985: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
986: if ((*uintptr) >= max_entries)
987: fatal("%s line %d: "
988: "too many authorized keys files.",
989: filename, linenum);
990: cpptr[(*uintptr)++] = xstrdup(arg);
991: }
992: }
993: return 0;
1.17 markus 994:
995: case oUserKnownHostsFile:
1.193 djm 996: cpptr = (char **)&options->user_hostfiles;
997: uintptr = &options->num_user_hostfiles;
998: max_entries = SSH_MAX_HOSTS_FILES;
999: goto parse_char_array;
1.27 markus 1000:
1.17 markus 1001: case oHostName:
1002: charptr = &options->hostname;
1003: goto parse_string;
1004:
1.52 markus 1005: case oHostKeyAlias:
1006: charptr = &options->host_key_alias;
1007: goto parse_string;
1008:
1.67 markus 1009: case oPreferredAuthentications:
1010: charptr = &options->preferred_authentications;
1011: goto parse_string;
1012:
1.77 markus 1013: case oBindAddress:
1014: charptr = &options->bind_address;
1015: goto parse_string;
1016:
1.183 markus 1017: case oPKCS11Provider:
1018: charptr = &options->pkcs11_provider;
1.86 markus 1019: goto parse_string;
1.85 jakob 1020:
1.17 markus 1021: case oProxyCommand:
1.144 reyk 1022: charptr = &options->proxy_command;
1023: parse_command:
1.113 markus 1024: if (s == NULL)
1025: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.102 markus 1026: len = strspn(s, WHITESPACE "=");
1.17 markus 1027: if (*activep && *charptr == NULL)
1.102 markus 1028: *charptr = xstrdup(s + len);
1.17 markus 1029: return 0;
1030:
1031: case oPort:
1032: intptr = &options->port;
1033: parse_int:
1.42 provos 1034: arg = strdelim(&s);
1.40 ho 1035: if (!arg || *arg == '\0')
1.17 markus 1036: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1037: if (arg[0] < '0' || arg[0] > '9')
1.17 markus 1038: fatal("%.200s line %d: Bad number.", filename, linenum);
1.21 markus 1039:
1040: /* Octal, decimal, or hex format? */
1.38 provos 1041: value = strtol(arg, &endofnumber, 0);
1042: if (arg == endofnumber)
1.21 markus 1043: fatal("%.200s line %d: Bad number.", filename, linenum);
1.17 markus 1044: if (*activep && *intptr == -1)
1045: *intptr = value;
1046: break;
1047:
1048: case oConnectionAttempts:
1049: intptr = &options->connection_attempts;
1050: goto parse_int;
1051:
1052: case oCipher:
1053: intptr = &options->cipher;
1.42 provos 1054: arg = strdelim(&s);
1.40 ho 1055: if (!arg || *arg == '\0')
1.32 markus 1056: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1057: value = cipher_number(arg);
1.17 markus 1058: if (value == -1)
1059: fatal("%.200s line %d: Bad cipher '%s'.",
1.93 deraadt 1060: filename, linenum, arg ? arg : "<NONE>");
1.17 markus 1061: if (*activep && *intptr == -1)
1062: *intptr = value;
1063: break;
1064:
1.25 markus 1065: case oCiphers:
1.42 provos 1066: arg = strdelim(&s);
1.40 ho 1067: if (!arg || *arg == '\0')
1.32 markus 1068: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1069: if (!ciphers_valid(arg))
1.31 markus 1070: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1.93 deraadt 1071: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1072: if (*activep && options->ciphers == NULL)
1.38 provos 1073: options->ciphers = xstrdup(arg);
1.25 markus 1074: break;
1075:
1.62 markus 1076: case oMacs:
1077: arg = strdelim(&s);
1078: if (!arg || *arg == '\0')
1079: fatal("%.200s line %d: Missing argument.", filename, linenum);
1080: if (!mac_valid(arg))
1081: fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
1.93 deraadt 1082: filename, linenum, arg ? arg : "<NONE>");
1.62 markus 1083: if (*activep && options->macs == NULL)
1084: options->macs = xstrdup(arg);
1085: break;
1086:
1.189 djm 1087: case oKexAlgorithms:
1088: arg = strdelim(&s);
1089: if (!arg || *arg == '\0')
1090: fatal("%.200s line %d: Missing argument.",
1091: filename, linenum);
1092: if (!kex_names_valid(arg))
1093: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1094: filename, linenum, arg ? arg : "<NONE>");
1095: if (*activep && options->kex_algorithms == NULL)
1096: options->kex_algorithms = xstrdup(arg);
1097: break;
1098:
1.76 markus 1099: case oHostKeyAlgorithms:
1100: arg = strdelim(&s);
1101: if (!arg || *arg == '\0')
1102: fatal("%.200s line %d: Missing argument.", filename, linenum);
1103: if (!key_names_valid2(arg))
1104: fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.",
1.93 deraadt 1105: filename, linenum, arg ? arg : "<NONE>");
1.76 markus 1106: if (*activep && options->hostkeyalgorithms == NULL)
1107: options->hostkeyalgorithms = xstrdup(arg);
1108: break;
1109:
1.25 markus 1110: case oProtocol:
1111: intptr = &options->protocol;
1.42 provos 1112: arg = strdelim(&s);
1.40 ho 1113: if (!arg || *arg == '\0')
1.32 markus 1114: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1115: value = proto_spec(arg);
1.25 markus 1116: if (value == SSH_PROTO_UNKNOWN)
1117: fatal("%.200s line %d: Bad protocol spec '%s'.",
1.93 deraadt 1118: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 1119: if (*activep && *intptr == SSH_PROTO_UNKNOWN)
1120: *intptr = value;
1121: break;
1122:
1.17 markus 1123: case oLogLevel:
1.164 dtucker 1124: log_level_ptr = &options->log_level;
1.42 provos 1125: arg = strdelim(&s);
1.38 provos 1126: value = log_level_number(arg);
1.95 markus 1127: if (value == SYSLOG_LEVEL_NOT_SET)
1.64 millert 1128: fatal("%.200s line %d: unsupported log level '%s'",
1.93 deraadt 1129: filename, linenum, arg ? arg : "<NONE>");
1.164 dtucker 1130: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1131: *log_level_ptr = (LogLevel) value;
1.17 markus 1132: break;
1133:
1.88 stevesk 1134: case oLocalForward:
1.17 markus 1135: case oRemoteForward:
1.168 stevesk 1136: case oDynamicForward:
1.42 provos 1137: arg = strdelim(&s);
1.135 djm 1138: if (arg == NULL || *arg == '\0')
1.88 stevesk 1139: fatal("%.200s line %d: Missing port argument.",
1140: filename, linenum);
1.135 djm 1141:
1.168 stevesk 1142: if (opcode == oLocalForward ||
1143: opcode == oRemoteForward) {
1144: arg2 = strdelim(&s);
1145: if (arg2 == NULL || *arg2 == '\0')
1146: fatal("%.200s line %d: Missing target argument.",
1147: filename, linenum);
1.135 djm 1148:
1.168 stevesk 1149: /* construct a string for parse_forward */
1150: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2);
1151: } else if (opcode == oDynamicForward) {
1152: strlcpy(fwdarg, arg, sizeof(fwdarg));
1153: }
1154:
1155: if (parse_forward(&fwd, fwdarg,
1.176 djm 1156: opcode == oDynamicForward ? 1 : 0,
1157: opcode == oRemoteForward ? 1 : 0) == 0)
1.88 stevesk 1158: fatal("%.200s line %d: Bad forwarding specification.",
1159: filename, linenum);
1.135 djm 1160:
1.88 stevesk 1161: if (*activep) {
1.168 stevesk 1162: if (opcode == oLocalForward ||
1163: opcode == oDynamicForward)
1.135 djm 1164: add_local_forward(options, &fwd);
1.88 stevesk 1165: else if (opcode == oRemoteForward)
1.135 djm 1166: add_remote_forward(options, &fwd);
1.88 stevesk 1167: }
1.17 markus 1168: break;
1.71 markus 1169:
1.90 stevesk 1170: case oClearAllForwardings:
1171: intptr = &options->clear_forwardings;
1172: goto parse_flag;
1173:
1.17 markus 1174: case oHost:
1.206 djm 1175: if (cmdline)
1176: fatal("Host directive not supported as a command-line "
1177: "option");
1.17 markus 1178: *activep = 0;
1.191 djm 1179: arg2 = NULL;
1180: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1181: negated = *arg == '!';
1182: if (negated)
1183: arg++;
1.38 provos 1184: if (match_pattern(host, arg)) {
1.191 djm 1185: if (negated) {
1186: debug("%.200s line %d: Skipping Host "
1187: "block because of negated match "
1188: "for %.100s", filename, linenum,
1189: arg);
1190: *activep = 0;
1191: break;
1192: }
1193: if (!*activep)
1194: arg2 = arg; /* logged below */
1.17 markus 1195: *activep = 1;
1196: }
1.191 djm 1197: }
1198: if (*activep)
1199: debug("%.200s line %d: Applying options for %.100s",
1200: filename, linenum, arg2);
1.42 provos 1201: /* Avoid garbage check below, as strdelim is done. */
1.17 markus 1202: return 0;
1203:
1.206 djm 1204: case oMatch:
1205: if (cmdline)
1206: fatal("Host directive not supported as a command-line "
1207: "option");
1.221 djm 1208: value = match_cfg_line(options, &s, pw, host, original_host,
1209: flags & SSHCONF_POSTCANON, filename, linenum);
1.206 djm 1210: if (value < 0)
1211: fatal("%.200s line %d: Bad Match condition", filename,
1212: linenum);
1213: *activep = value;
1214: break;
1215:
1.17 markus 1216: case oEscapeChar:
1217: intptr = &options->escape_char;
1.42 provos 1218: arg = strdelim(&s);
1.40 ho 1219: if (!arg || *arg == '\0')
1.17 markus 1220: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.38 provos 1221: if (arg[0] == '^' && arg[2] == 0 &&
1.51 markus 1222: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1223: value = (u_char) arg[1] & 31;
1.38 provos 1224: else if (strlen(arg) == 1)
1.51 markus 1225: value = (u_char) arg[0];
1.38 provos 1226: else if (strcmp(arg, "none") == 0)
1.79 stevesk 1227: value = SSH_ESCAPECHAR_NONE;
1.17 markus 1228: else {
1229: fatal("%.200s line %d: Bad escape character.",
1.93 deraadt 1230: filename, linenum);
1.17 markus 1231: /* NOTREACHED */
1232: value = 0; /* Avoid compiler warning. */
1233: }
1234: if (*activep && *intptr == -1)
1235: *intptr = value;
1.112 djm 1236: break;
1237:
1238: case oAddressFamily:
1.114 djm 1239: intptr = &options->address_family;
1.207 djm 1240: multistate_ptr = multistate_addressfamily;
1241: goto parse_multistate;
1.17 markus 1242:
1.101 markus 1243: case oEnableSSHKeysign:
1244: intptr = &options->enable_ssh_keysign;
1245: goto parse_flag;
1246:
1.128 markus 1247: case oIdentitiesOnly:
1248: intptr = &options->identities_only;
1249: goto parse_flag;
1250:
1.127 markus 1251: case oServerAliveInterval:
1252: intptr = &options->server_alive_interval;
1253: goto parse_time;
1254:
1255: case oServerAliveCountMax:
1256: intptr = &options->server_alive_count_max;
1257: goto parse_int;
1258:
1.130 djm 1259: case oSendEnv:
1260: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1261: if (strchr(arg, '=') != NULL)
1262: fatal("%s line %d: Invalid environment name.",
1263: filename, linenum);
1.137 djm 1264: if (!*activep)
1265: continue;
1.130 djm 1266: if (options->num_send_env >= MAX_SEND_ENV)
1267: fatal("%s line %d: too many send env.",
1268: filename, linenum);
1269: options->send_env[options->num_send_env++] =
1270: xstrdup(arg);
1271: }
1272: break;
1273:
1.132 djm 1274: case oControlPath:
1275: charptr = &options->control_path;
1276: goto parse_string;
1277:
1278: case oControlMaster:
1279: intptr = &options->control_master;
1.207 djm 1280: multistate_ptr = multistate_controlmaster;
1281: goto parse_multistate;
1.132 djm 1282:
1.187 djm 1283: case oControlPersist:
1284: /* no/false/yes/true, or a time spec */
1285: intptr = &options->control_persist;
1286: arg = strdelim(&s);
1287: if (!arg || *arg == '\0')
1288: fatal("%.200s line %d: Missing ControlPersist"
1289: " argument.", filename, linenum);
1290: value = 0;
1291: value2 = 0; /* timeout */
1292: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1293: value = 0;
1294: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1295: value = 1;
1296: else if ((value2 = convtime(arg)) >= 0)
1297: value = 1;
1298: else
1299: fatal("%.200s line %d: Bad ControlPersist argument.",
1300: filename, linenum);
1301: if (*activep && *intptr == -1) {
1302: *intptr = value;
1303: options->control_persist_timeout = value2;
1304: }
1305: break;
1306:
1.136 djm 1307: case oHashKnownHosts:
1308: intptr = &options->hash_known_hosts;
1309: goto parse_flag;
1310:
1.144 reyk 1311: case oTunnel:
1312: intptr = &options->tun_open;
1.207 djm 1313: multistate_ptr = multistate_tunnel;
1314: goto parse_multistate;
1.144 reyk 1315:
1316: case oTunnelDevice:
1317: arg = strdelim(&s);
1318: if (!arg || *arg == '\0')
1319: fatal("%.200s line %d: Missing argument.", filename, linenum);
1320: value = a2tun(arg, &value2);
1.145 reyk 1321: if (value == SSH_TUNID_ERR)
1.144 reyk 1322: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1323: if (*activep) {
1324: options->tun_local = value;
1325: options->tun_remote = value2;
1326: }
1327: break;
1328:
1329: case oLocalCommand:
1330: charptr = &options->local_command;
1331: goto parse_command;
1332:
1333: case oPermitLocalCommand:
1334: intptr = &options->permit_local_command;
1335: goto parse_flag;
1336:
1.167 grunk 1337: case oVisualHostKey:
1338: intptr = &options->visual_host_key;
1339: goto parse_flag;
1340:
1.190 djm 1341: case oIPQoS:
1342: arg = strdelim(&s);
1343: if ((value = parse_ipqos(arg)) == -1)
1344: fatal("%s line %d: Bad IPQoS value: %s",
1345: filename, linenum, arg);
1346: arg = strdelim(&s);
1347: if (arg == NULL)
1348: value2 = value;
1349: else if ((value2 = parse_ipqos(arg)) == -1)
1350: fatal("%s line %d: Bad IPQoS value: %s",
1351: filename, linenum, arg);
1352: if (*activep) {
1353: options->ip_qos_interactive = value;
1354: options->ip_qos_bulk = value2;
1355: }
1356: break;
1357:
1.177 andreas 1358: case oUseRoaming:
1359: intptr = &options->use_roaming;
1360: goto parse_flag;
1361:
1.192 djm 1362: case oRequestTTY:
1363: intptr = &options->request_tty;
1.207 djm 1364: multistate_ptr = multistate_requesttty;
1365: goto parse_multistate;
1.192 djm 1366:
1.199 djm 1367: case oIgnoreUnknown:
1368: charptr = &options->ignored_unknown;
1369: goto parse_string;
1370:
1.205 djm 1371: case oProxyUseFdpass:
1372: intptr = &options->proxy_use_fdpass;
1373: goto parse_flag;
1374:
1.208 djm 1375: case oCanonicalDomains:
1376: value = options->num_canonical_domains != 0;
1377: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1378: valid_domain(arg, filename, linenum);
1379: if (!*activep || value)
1380: continue;
1381: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1382: fatal("%s line %d: too many hostname suffixes.",
1383: filename, linenum);
1384: options->canonical_domains[
1385: options->num_canonical_domains++] = xstrdup(arg);
1386: }
1387: break;
1388:
1.209 djm 1389: case oCanonicalizePermittedCNAMEs:
1.208 djm 1390: value = options->num_permitted_cnames != 0;
1391: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1392: /* Either '*' for everything or 'list:list' */
1393: if (strcmp(arg, "*") == 0)
1394: arg2 = arg;
1395: else {
1396: lowercase(arg);
1397: if ((arg2 = strchr(arg, ':')) == NULL ||
1398: arg2[1] == '\0') {
1399: fatal("%s line %d: "
1400: "Invalid permitted CNAME \"%s\"",
1401: filename, linenum, arg);
1402: }
1403: *arg2 = '\0';
1404: arg2++;
1405: }
1406: if (!*activep || value)
1407: continue;
1408: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1409: fatal("%s line %d: too many permitted CNAMEs.",
1410: filename, linenum);
1411: cname = options->permitted_cnames +
1412: options->num_permitted_cnames++;
1413: cname->source_list = xstrdup(arg);
1414: cname->target_list = xstrdup(arg2);
1415: }
1416: break;
1417:
1.209 djm 1418: case oCanonicalizeHostname:
1419: intptr = &options->canonicalize_hostname;
1420: multistate_ptr = multistate_canonicalizehostname;
1.208 djm 1421: goto parse_multistate;
1422:
1.209 djm 1423: case oCanonicalizeMaxDots:
1424: intptr = &options->canonicalize_max_dots;
1.208 djm 1425: goto parse_int;
1426:
1.209 djm 1427: case oCanonicalizeFallbackLocal:
1428: intptr = &options->canonicalize_fallback_local;
1.208 djm 1429: goto parse_flag;
1430:
1.220 millert 1431: case oStreamLocalBindMask:
1432: arg = strdelim(&s);
1433: if (!arg || *arg == '\0')
1434: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1435: /* Parse mode in octal format */
1436: value = strtol(arg, &endofnumber, 8);
1437: if (arg == endofnumber || value < 0 || value > 0777)
1438: fatal("%.200s line %d: Bad mask.", filename, linenum);
1439: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1440: break;
1441:
1442: case oStreamLocalBindUnlink:
1443: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1444: goto parse_flag;
1445:
1.96 markus 1446: case oDeprecated:
1.98 markus 1447: debug("%s line %d: Deprecated option \"%s\"",
1.96 markus 1448: filename, linenum, keyword);
1.98 markus 1449: return 0;
1.96 markus 1450:
1.110 jakob 1451: case oUnsupported:
1452: error("%s line %d: Unsupported option \"%s\"",
1453: filename, linenum, keyword);
1454: return 0;
1455:
1.17 markus 1456: default:
1.221 djm 1457: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.17 markus 1458: }
1459:
1460: /* Check that there is no garbage at end of line. */
1.57 djm 1461: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.39 ho 1462: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1.142 djm 1463: filename, linenum, arg);
1.39 ho 1464: }
1.17 markus 1465: return 0;
1.1 deraadt 1466: }
1467:
1468:
1.19 markus 1469: /*
1470: * Reads the config file and modifies the options accordingly. Options
1471: * should already be initialized before this call. This never returns if
1.89 stevesk 1472: * there is an error. If the file does not exist, this returns 0.
1.19 markus 1473: */
1.1 deraadt 1474:
1.89 stevesk 1475: int
1.206 djm 1476: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.221 djm 1477: const char *original_host, Options *options, int flags)
1.1 deraadt 1478: {
1.17 markus 1479: FILE *f;
1480: char line[1024];
1481: int active, linenum;
1482: int bad_options = 0;
1483:
1.129 djm 1484: if ((f = fopen(filename, "r")) == NULL)
1.89 stevesk 1485: return 0;
1.129 djm 1486:
1.196 dtucker 1487: if (flags & SSHCONF_CHECKPERM) {
1.129 djm 1488: struct stat sb;
1.134 deraadt 1489:
1.131 dtucker 1490: if (fstat(fileno(f), &sb) == -1)
1.129 djm 1491: fatal("fstat %s: %s", filename, strerror(errno));
1492: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
1.131 dtucker 1493: (sb.st_mode & 022) != 0))
1.129 djm 1494: fatal("Bad owner or permissions on %s", filename);
1495: }
1.17 markus 1496:
1497: debug("Reading configuration data %.200s", filename);
1498:
1.19 markus 1499: /*
1500: * Mark that we are now processing the options. This flag is turned
1501: * on/off by Host specifications.
1502: */
1.17 markus 1503: active = 1;
1504: linenum = 0;
1505: while (fgets(line, sizeof(line), f)) {
1506: /* Update line number counter. */
1507: linenum++;
1.221 djm 1508: if (process_config_line(options, pw, host, original_host,
1509: line, filename, linenum, &active, flags) != 0)
1.17 markus 1510: bad_options++;
1511: }
1512: fclose(f);
1513: if (bad_options > 0)
1.64 millert 1514: fatal("%s: terminating, %d bad configuration options",
1.93 deraadt 1515: filename, bad_options);
1.89 stevesk 1516: return 1;
1.1 deraadt 1517: }
1518:
1.218 djm 1519: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
1520: int
1521: option_clear_or_none(const char *o)
1522: {
1523: return o == NULL || strcasecmp(o, "none") == 0;
1524: }
1525:
1.19 markus 1526: /*
1527: * Initializes options to special values that indicate that they have not yet
1528: * been set. Read_config_file will only set options with this value. Options
1529: * are processed in the following order: command line, user config file,
1530: * system config file. Last, fill_default_options is called.
1531: */
1.1 deraadt 1532:
1.26 markus 1533: void
1.17 markus 1534: initialize_options(Options * options)
1.1 deraadt 1535: {
1.17 markus 1536: memset(options, 'X', sizeof(*options));
1537: options->forward_agent = -1;
1538: options->forward_x11 = -1;
1.123 markus 1539: options->forward_x11_trusted = -1;
1.186 djm 1540: options->forward_x11_timeout = -1;
1.153 markus 1541: options->exit_on_forward_failure = -1;
1.34 markus 1542: options->xauth_location = NULL;
1.220 millert 1543: options->fwd_opts.gateway_ports = -1;
1544: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
1545: options->fwd_opts.streamlocal_bind_unlink = -1;
1.17 markus 1546: options->use_privileged_port = -1;
1547: options->rsa_authentication = -1;
1.50 markus 1548: options->pubkey_authentication = -1;
1.78 markus 1549: options->challenge_response_authentication = -1;
1.118 markus 1550: options->gss_authentication = -1;
1551: options->gss_deleg_creds = -1;
1.17 markus 1552: options->password_authentication = -1;
1.48 markus 1553: options->kbd_interactive_authentication = -1;
1554: options->kbd_interactive_devices = NULL;
1.17 markus 1555: options->rhosts_rsa_authentication = -1;
1.72 markus 1556: options->hostbased_authentication = -1;
1.17 markus 1557: options->batch_mode = -1;
1558: options->check_host_ip = -1;
1559: options->strict_host_key_checking = -1;
1560: options->compression = -1;
1.126 markus 1561: options->tcp_keep_alive = -1;
1.17 markus 1562: options->compression_level = -1;
1563: options->port = -1;
1.114 djm 1564: options->address_family = -1;
1.17 markus 1565: options->connection_attempts = -1;
1.111 djm 1566: options->connection_timeout = -1;
1.17 markus 1567: options->number_of_password_prompts = -1;
1568: options->cipher = -1;
1.25 markus 1569: options->ciphers = NULL;
1.62 markus 1570: options->macs = NULL;
1.189 djm 1571: options->kex_algorithms = NULL;
1.76 markus 1572: options->hostkeyalgorithms = NULL;
1.25 markus 1573: options->protocol = SSH_PROTO_UNKNOWN;
1.17 markus 1574: options->num_identity_files = 0;
1575: options->hostname = NULL;
1.52 markus 1576: options->host_key_alias = NULL;
1.17 markus 1577: options->proxy_command = NULL;
1578: options->user = NULL;
1579: options->escape_char = -1;
1.193 djm 1580: options->num_system_hostfiles = 0;
1581: options->num_user_hostfiles = 0;
1.185 djm 1582: options->local_forwards = NULL;
1.17 markus 1583: options->num_local_forwards = 0;
1.185 djm 1584: options->remote_forwards = NULL;
1.17 markus 1585: options->num_remote_forwards = 0;
1.90 stevesk 1586: options->clear_forwardings = -1;
1.95 markus 1587: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.67 markus 1588: options->preferred_authentications = NULL;
1.77 markus 1589: options->bind_address = NULL;
1.183 markus 1590: options->pkcs11_provider = NULL;
1.101 markus 1591: options->enable_ssh_keysign = - 1;
1.91 markus 1592: options->no_host_authentication_for_localhost = - 1;
1.128 markus 1593: options->identities_only = - 1;
1.105 markus 1594: options->rekey_limit = - 1;
1.198 dtucker 1595: options->rekey_interval = -1;
1.107 jakob 1596: options->verify_host_key_dns = -1;
1.127 markus 1597: options->server_alive_interval = -1;
1598: options->server_alive_count_max = -1;
1.130 djm 1599: options->num_send_env = 0;
1.132 djm 1600: options->control_path = NULL;
1601: options->control_master = -1;
1.187 djm 1602: options->control_persist = -1;
1603: options->control_persist_timeout = 0;
1.136 djm 1604: options->hash_known_hosts = -1;
1.144 reyk 1605: options->tun_open = -1;
1606: options->tun_local = -1;
1607: options->tun_remote = -1;
1608: options->local_command = NULL;
1609: options->permit_local_command = -1;
1.177 andreas 1610: options->use_roaming = -1;
1.167 grunk 1611: options->visual_host_key = -1;
1.190 djm 1612: options->ip_qos_interactive = -1;
1613: options->ip_qos_bulk = -1;
1.192 djm 1614: options->request_tty = -1;
1.205 djm 1615: options->proxy_use_fdpass = -1;
1.199 djm 1616: options->ignored_unknown = NULL;
1.208 djm 1617: options->num_canonical_domains = 0;
1618: options->num_permitted_cnames = 0;
1.209 djm 1619: options->canonicalize_max_dots = -1;
1620: options->canonicalize_fallback_local = -1;
1621: options->canonicalize_hostname = -1;
1.1 deraadt 1622: }
1623:
1.19 markus 1624: /*
1.218 djm 1625: * A petite version of fill_default_options() that just fills the options
1626: * needed for hostname canonicalization to proceed.
1627: */
1628: void
1629: fill_default_options_for_canonicalization(Options *options)
1630: {
1631: if (options->canonicalize_max_dots == -1)
1632: options->canonicalize_max_dots = 1;
1633: if (options->canonicalize_fallback_local == -1)
1634: options->canonicalize_fallback_local = 1;
1635: if (options->canonicalize_hostname == -1)
1636: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1637: }
1638:
1639: /*
1.19 markus 1640: * Called after processing other sources of option data, this fills those
1641: * options for which no value has been specified with their default values.
1642: */
1.26 markus 1643: void
1.17 markus 1644: fill_default_options(Options * options)
1.1 deraadt 1645: {
1.17 markus 1646: if (options->forward_agent == -1)
1.33 markus 1647: options->forward_agent = 0;
1.17 markus 1648: if (options->forward_x11 == -1)
1.23 markus 1649: options->forward_x11 = 0;
1.123 markus 1650: if (options->forward_x11_trusted == -1)
1651: options->forward_x11_trusted = 0;
1.186 djm 1652: if (options->forward_x11_timeout == -1)
1653: options->forward_x11_timeout = 1200;
1.153 markus 1654: if (options->exit_on_forward_failure == -1)
1655: options->exit_on_forward_failure = 0;
1.34 markus 1656: if (options->xauth_location == NULL)
1.80 markus 1657: options->xauth_location = _PATH_XAUTH;
1.220 millert 1658: if (options->fwd_opts.gateway_ports == -1)
1659: options->fwd_opts.gateway_ports = 0;
1660: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
1661: options->fwd_opts.streamlocal_bind_mask = 0177;
1662: if (options->fwd_opts.streamlocal_bind_unlink == -1)
1663: options->fwd_opts.streamlocal_bind_unlink = 0;
1.17 markus 1664: if (options->use_privileged_port == -1)
1.65 markus 1665: options->use_privileged_port = 0;
1.17 markus 1666: if (options->rsa_authentication == -1)
1667: options->rsa_authentication = 1;
1.50 markus 1668: if (options->pubkey_authentication == -1)
1669: options->pubkey_authentication = 1;
1.78 markus 1670: if (options->challenge_response_authentication == -1)
1.83 markus 1671: options->challenge_response_authentication = 1;
1.118 markus 1672: if (options->gss_authentication == -1)
1.122 markus 1673: options->gss_authentication = 0;
1.118 markus 1674: if (options->gss_deleg_creds == -1)
1675: options->gss_deleg_creds = 0;
1.17 markus 1676: if (options->password_authentication == -1)
1677: options->password_authentication = 1;
1.48 markus 1678: if (options->kbd_interactive_authentication == -1)
1.59 markus 1679: options->kbd_interactive_authentication = 1;
1.17 markus 1680: if (options->rhosts_rsa_authentication == -1)
1.99 stevesk 1681: options->rhosts_rsa_authentication = 0;
1.72 markus 1682: if (options->hostbased_authentication == -1)
1683: options->hostbased_authentication = 0;
1.17 markus 1684: if (options->batch_mode == -1)
1685: options->batch_mode = 0;
1686: if (options->check_host_ip == -1)
1687: options->check_host_ip = 1;
1688: if (options->strict_host_key_checking == -1)
1689: options->strict_host_key_checking = 2; /* 2 is default */
1690: if (options->compression == -1)
1691: options->compression = 0;
1.126 markus 1692: if (options->tcp_keep_alive == -1)
1693: options->tcp_keep_alive = 1;
1.17 markus 1694: if (options->compression_level == -1)
1695: options->compression_level = 6;
1696: if (options->port == -1)
1697: options->port = 0; /* Filled in ssh_connect. */
1.114 djm 1698: if (options->address_family == -1)
1699: options->address_family = AF_UNSPEC;
1.17 markus 1700: if (options->connection_attempts == -1)
1.84 markus 1701: options->connection_attempts = 1;
1.17 markus 1702: if (options->number_of_password_prompts == -1)
1703: options->number_of_password_prompts = 3;
1704: /* Selected in ssh_login(). */
1705: if (options->cipher == -1)
1706: options->cipher = SSH_CIPHER_NOT_SET;
1.31 markus 1707: /* options->ciphers, default set in myproposals.h */
1.62 markus 1708: /* options->macs, default set in myproposals.h */
1.189 djm 1709: /* options->kex_algorithms, default set in myproposals.h */
1.76 markus 1710: /* options->hostkeyalgorithms, default set in myproposals.h */
1.25 markus 1711: if (options->protocol == SSH_PROTO_UNKNOWN)
1.178 markus 1712: options->protocol = SSH_PROTO_2;
1.17 markus 1713: if (options->num_identity_files == 0) {
1.50 markus 1714: if (options->protocol & SSH_PROTO_1) {
1.195 dtucker 1715: add_identity_file(options, "~/",
1716: _PATH_SSH_CLIENT_IDENTITY, 0);
1.50 markus 1717: }
1718: if (options->protocol & SSH_PROTO_2) {
1.195 dtucker 1719: add_identity_file(options, "~/",
1720: _PATH_SSH_CLIENT_ID_RSA, 0);
1721: add_identity_file(options, "~/",
1722: _PATH_SSH_CLIENT_ID_DSA, 0);
1723: add_identity_file(options, "~/",
1724: _PATH_SSH_CLIENT_ID_ECDSA, 0);
1.215 markus 1725: add_identity_file(options, "~/",
1726: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.50 markus 1727: }
1.27 markus 1728: }
1.17 markus 1729: if (options->escape_char == -1)
1730: options->escape_char = '~';
1.193 djm 1731: if (options->num_system_hostfiles == 0) {
1732: options->system_hostfiles[options->num_system_hostfiles++] =
1733: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
1734: options->system_hostfiles[options->num_system_hostfiles++] =
1735: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
1736: }
1737: if (options->num_user_hostfiles == 0) {
1738: options->user_hostfiles[options->num_user_hostfiles++] =
1739: xstrdup(_PATH_SSH_USER_HOSTFILE);
1740: options->user_hostfiles[options->num_user_hostfiles++] =
1741: xstrdup(_PATH_SSH_USER_HOSTFILE2);
1742: }
1.95 markus 1743: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.54 markus 1744: options->log_level = SYSLOG_LEVEL_INFO;
1.90 stevesk 1745: if (options->clear_forwardings == 1)
1746: clear_forwardings(options);
1.91 markus 1747: if (options->no_host_authentication_for_localhost == - 1)
1748: options->no_host_authentication_for_localhost = 0;
1.128 markus 1749: if (options->identities_only == -1)
1750: options->identities_only = 0;
1.101 markus 1751: if (options->enable_ssh_keysign == -1)
1752: options->enable_ssh_keysign = 0;
1.105 markus 1753: if (options->rekey_limit == -1)
1754: options->rekey_limit = 0;
1.198 dtucker 1755: if (options->rekey_interval == -1)
1756: options->rekey_interval = 0;
1.107 jakob 1757: if (options->verify_host_key_dns == -1)
1758: options->verify_host_key_dns = 0;
1.127 markus 1759: if (options->server_alive_interval == -1)
1760: options->server_alive_interval = 0;
1761: if (options->server_alive_count_max == -1)
1762: options->server_alive_count_max = 3;
1.132 djm 1763: if (options->control_master == -1)
1764: options->control_master = 0;
1.187 djm 1765: if (options->control_persist == -1) {
1766: options->control_persist = 0;
1767: options->control_persist_timeout = 0;
1768: }
1.136 djm 1769: if (options->hash_known_hosts == -1)
1770: options->hash_known_hosts = 0;
1.144 reyk 1771: if (options->tun_open == -1)
1.145 reyk 1772: options->tun_open = SSH_TUNMODE_NO;
1773: if (options->tun_local == -1)
1774: options->tun_local = SSH_TUNID_ANY;
1775: if (options->tun_remote == -1)
1776: options->tun_remote = SSH_TUNID_ANY;
1.144 reyk 1777: if (options->permit_local_command == -1)
1778: options->permit_local_command = 0;
1.177 andreas 1779: if (options->use_roaming == -1)
1780: options->use_roaming = 1;
1.167 grunk 1781: if (options->visual_host_key == -1)
1782: options->visual_host_key = 0;
1.190 djm 1783: if (options->ip_qos_interactive == -1)
1784: options->ip_qos_interactive = IPTOS_LOWDELAY;
1785: if (options->ip_qos_bulk == -1)
1786: options->ip_qos_bulk = IPTOS_THROUGHPUT;
1.192 djm 1787: if (options->request_tty == -1)
1788: options->request_tty = REQUEST_TTY_AUTO;
1.205 djm 1789: if (options->proxy_use_fdpass == -1)
1790: options->proxy_use_fdpass = 0;
1.209 djm 1791: if (options->canonicalize_max_dots == -1)
1792: options->canonicalize_max_dots = 1;
1793: if (options->canonicalize_fallback_local == -1)
1794: options->canonicalize_fallback_local = 1;
1795: if (options->canonicalize_hostname == -1)
1796: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.207 djm 1797: #define CLEAR_ON_NONE(v) \
1798: do { \
1.218 djm 1799: if (option_clear_or_none(v)) { \
1.207 djm 1800: free(v); \
1801: v = NULL; \
1802: } \
1803: } while(0)
1804: CLEAR_ON_NONE(options->local_command);
1805: CLEAR_ON_NONE(options->proxy_command);
1806: CLEAR_ON_NONE(options->control_path);
1.17 markus 1807: /* options->user will be set in the main program if appropriate */
1808: /* options->hostname will be set in the main program if appropriate */
1.52 markus 1809: /* options->host_key_alias should not be set by default */
1.67 markus 1810: /* options->preferred_authentications will be set in ssh */
1.135 djm 1811: }
1812:
1.220 millert 1813: struct fwdarg {
1814: char *arg;
1815: int ispath;
1816: };
1817:
1818: /*
1819: * parse_fwd_field
1820: * parses the next field in a port forwarding specification.
1821: * sets fwd to the parsed field and advances p past the colon
1822: * or sets it to NULL at end of string.
1823: * returns 0 on success, else non-zero.
1824: */
1825: static int
1826: parse_fwd_field(char **p, struct fwdarg *fwd)
1827: {
1828: char *ep, *cp = *p;
1829: int ispath = 0;
1830:
1831: if (*cp == '\0') {
1832: *p = NULL;
1833: return -1; /* end of string */
1834: }
1835:
1836: /*
1837: * A field escaped with square brackets is used literally.
1838: * XXX - allow ']' to be escaped via backslash?
1839: */
1840: if (*cp == '[') {
1841: /* find matching ']' */
1842: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
1843: if (*ep == '/')
1844: ispath = 1;
1845: }
1846: /* no matching ']' or not at end of field. */
1847: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
1848: return -1;
1849: /* NUL terminate the field and advance p past the colon */
1850: *ep++ = '\0';
1851: if (*ep != '\0')
1852: *ep++ = '\0';
1853: fwd->arg = cp + 1;
1854: fwd->ispath = ispath;
1855: *p = ep;
1856: return 0;
1857: }
1858:
1859: for (cp = *p; *cp != '\0'; cp++) {
1860: switch (*cp) {
1861: case '\\':
1862: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1863: cp++;
1864: break;
1865: case '/':
1866: ispath = 1;
1867: break;
1868: case ':':
1869: *cp++ = '\0';
1870: goto done;
1871: }
1872: }
1873: done:
1874: fwd->arg = *p;
1875: fwd->ispath = ispath;
1876: *p = cp;
1877: return 0;
1878: }
1879:
1.135 djm 1880: /*
1881: * parse_forward
1882: * parses a string containing a port forwarding specification of the form:
1.168 stevesk 1883: * dynamicfwd == 0
1.220 millert 1884: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
1885: * listenpath:connectpath
1.168 stevesk 1886: * dynamicfwd == 1
1887: * [listenhost:]listenport
1.135 djm 1888: * returns number of arguments parsed or zero on error
1889: */
1890: int
1.220 millert 1891: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.135 djm 1892: {
1.220 millert 1893: struct fwdarg fwdargs[4];
1894: char *p, *cp;
1.135 djm 1895: int i;
1896:
1.220 millert 1897: memset(fwd, 0, sizeof(*fwd));
1898: memset(fwdargs, 0, sizeof(fwdargs));
1.135 djm 1899:
1900: cp = p = xstrdup(fwdspec);
1901:
1902: /* skip leading spaces */
1.214 deraadt 1903: while (isspace((u_char)*cp))
1.135 djm 1904: cp++;
1905:
1.220 millert 1906: for (i = 0; i < 4; ++i) {
1907: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.135 djm 1908: break;
1.220 millert 1909: }
1.135 djm 1910:
1.170 stevesk 1911: /* Check for trailing garbage */
1.220 millert 1912: if (cp != NULL && *cp != '\0') {
1.135 djm 1913: i = 0; /* failure */
1.220 millert 1914: }
1.135 djm 1915:
1916: switch (i) {
1.168 stevesk 1917: case 1:
1.220 millert 1918: if (fwdargs[0].ispath) {
1919: fwd->listen_path = xstrdup(fwdargs[0].arg);
1920: fwd->listen_port = PORT_STREAMLOCAL;
1921: } else {
1922: fwd->listen_host = NULL;
1923: fwd->listen_port = a2port(fwdargs[0].arg);
1924: }
1.168 stevesk 1925: fwd->connect_host = xstrdup("socks");
1926: break;
1927:
1928: case 2:
1.220 millert 1929: if (fwdargs[0].ispath && fwdargs[1].ispath) {
1930: fwd->listen_path = xstrdup(fwdargs[0].arg);
1931: fwd->listen_port = PORT_STREAMLOCAL;
1932: fwd->connect_path = xstrdup(fwdargs[1].arg);
1933: fwd->connect_port = PORT_STREAMLOCAL;
1934: } else if (fwdargs[1].ispath) {
1935: fwd->listen_host = NULL;
1936: fwd->listen_port = a2port(fwdargs[0].arg);
1937: fwd->connect_path = xstrdup(fwdargs[1].arg);
1938: fwd->connect_port = PORT_STREAMLOCAL;
1939: } else {
1940: fwd->listen_host = xstrdup(fwdargs[0].arg);
1941: fwd->listen_port = a2port(fwdargs[1].arg);
1942: fwd->connect_host = xstrdup("socks");
1943: }
1.168 stevesk 1944: break;
1945:
1.135 djm 1946: case 3:
1.220 millert 1947: if (fwdargs[0].ispath) {
1948: fwd->listen_path = xstrdup(fwdargs[0].arg);
1949: fwd->listen_port = PORT_STREAMLOCAL;
1950: fwd->connect_host = xstrdup(fwdargs[1].arg);
1951: fwd->connect_port = a2port(fwdargs[2].arg);
1952: } else if (fwdargs[2].ispath) {
1953: fwd->listen_host = xstrdup(fwdargs[0].arg);
1954: fwd->listen_port = a2port(fwdargs[1].arg);
1955: fwd->connect_path = xstrdup(fwdargs[2].arg);
1956: fwd->connect_port = PORT_STREAMLOCAL;
1957: } else {
1958: fwd->listen_host = NULL;
1959: fwd->listen_port = a2port(fwdargs[0].arg);
1960: fwd->connect_host = xstrdup(fwdargs[1].arg);
1961: fwd->connect_port = a2port(fwdargs[2].arg);
1962: }
1.135 djm 1963: break;
1964:
1965: case 4:
1.220 millert 1966: fwd->listen_host = xstrdup(fwdargs[0].arg);
1967: fwd->listen_port = a2port(fwdargs[1].arg);
1968: fwd->connect_host = xstrdup(fwdargs[2].arg);
1969: fwd->connect_port = a2port(fwdargs[3].arg);
1.135 djm 1970: break;
1971: default:
1972: i = 0; /* failure */
1973: }
1974:
1.202 djm 1975: free(p);
1.135 djm 1976:
1.168 stevesk 1977: if (dynamicfwd) {
1978: if (!(i == 1 || i == 2))
1979: goto fail_free;
1980: } else {
1.220 millert 1981: if (!(i == 3 || i == 4)) {
1982: if (fwd->connect_path == NULL &&
1983: fwd->listen_path == NULL)
1984: goto fail_free;
1985: }
1986: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.168 stevesk 1987: goto fail_free;
1988: }
1989:
1.220 millert 1990: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
1991: (!remotefwd && fwd->listen_port == 0))
1.135 djm 1992: goto fail_free;
1993: if (fwd->connect_host != NULL &&
1994: strlen(fwd->connect_host) >= NI_MAXHOST)
1995: goto fail_free;
1.220 millert 1996: /* XXX - if connecting to a remote socket, max sun len may not match this host */
1997: if (fwd->connect_path != NULL &&
1998: strlen(fwd->connect_path) >= PATH_MAX_SUN)
1999: goto fail_free;
1.176 djm 2000: if (fwd->listen_host != NULL &&
2001: strlen(fwd->listen_host) >= NI_MAXHOST)
2002: goto fail_free;
1.220 millert 2003: if (fwd->listen_path != NULL &&
2004: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2005: goto fail_free;
1.135 djm 2006:
2007: return (i);
2008:
2009: fail_free:
1.202 djm 2010: free(fwd->connect_host);
2011: fwd->connect_host = NULL;
1.220 millert 2012: free(fwd->connect_path);
2013: fwd->connect_path = NULL;
1.202 djm 2014: free(fwd->listen_host);
2015: fwd->listen_host = NULL;
1.220 millert 2016: free(fwd->listen_path);
2017: fwd->listen_path = NULL;
1.135 djm 2018: return (0);
1.221 djm 2019: }
2020:
2021: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2022: static const char *
2023: fmt_multistate_int(int val, const struct multistate *m)
2024: {
2025: u_int i;
2026:
2027: for (i = 0; m[i].key != NULL; i++) {
2028: if (m[i].value == val)
2029: return m[i].key;
2030: }
2031: return "UNKNOWN";
2032: }
2033:
2034: static const char *
2035: fmt_intarg(OpCodes code, int val)
2036: {
2037: if (val == -1)
2038: return "unset";
2039: switch (code) {
2040: case oAddressFamily:
2041: return fmt_multistate_int(val, multistate_addressfamily);
2042: case oVerifyHostKeyDNS:
2043: case oStrictHostKeyChecking:
2044: return fmt_multistate_int(val, multistate_yesnoask);
2045: case oControlMaster:
2046: return fmt_multistate_int(val, multistate_controlmaster);
2047: case oTunnel:
2048: return fmt_multistate_int(val, multistate_tunnel);
2049: case oRequestTTY:
2050: return fmt_multistate_int(val, multistate_requesttty);
2051: case oCanonicalizeHostname:
2052: return fmt_multistate_int(val, multistate_canonicalizehostname);
2053: case oProtocol:
2054: switch (val) {
2055: case SSH_PROTO_1:
2056: return "1";
2057: case SSH_PROTO_2:
2058: return "2";
2059: case (SSH_PROTO_1|SSH_PROTO_2):
2060: return "2,1";
2061: default:
2062: return "UNKNOWN";
2063: }
2064: default:
2065: switch (val) {
2066: case 0:
2067: return "no";
2068: case 1:
2069: return "yes";
2070: default:
2071: return "UNKNOWN";
2072: }
2073: }
2074: }
2075:
2076: static const char *
2077: lookup_opcode_name(OpCodes code)
2078: {
2079: u_int i;
2080:
2081: for (i = 0; keywords[i].name != NULL; i++)
2082: if (keywords[i].opcode == code)
2083: return(keywords[i].name);
2084: return "UNKNOWN";
2085: }
2086:
2087: static void
2088: dump_cfg_int(OpCodes code, int val)
2089: {
2090: printf("%s %d\n", lookup_opcode_name(code), val);
2091: }
2092:
2093: static void
2094: dump_cfg_fmtint(OpCodes code, int val)
2095: {
2096: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2097: }
2098:
2099: static void
2100: dump_cfg_string(OpCodes code, const char *val)
2101: {
2102: if (val == NULL)
2103: return;
2104: printf("%s %s\n", lookup_opcode_name(code), val);
2105: }
2106:
2107: static void
2108: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2109: {
2110: u_int i;
2111:
2112: for (i = 0; i < count; i++)
2113: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2114: }
2115:
2116: static void
2117: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2118: {
2119: u_int i;
2120:
2121: printf("%s", lookup_opcode_name(code));
2122: for (i = 0; i < count; i++)
2123: printf(" %s", vals[i]);
2124: printf("\n");
2125: }
2126:
2127: static void
2128: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2129: {
2130: const struct Forward *fwd;
2131: u_int i;
2132:
2133: /* oDynamicForward */
2134: for (i = 0; i < count; i++) {
2135: fwd = &fwds[i];
2136: if (code == oDynamicForward &&
2137: strcmp(fwd->connect_host, "socks") != 0)
2138: continue;
2139: if (code == oLocalForward &&
2140: strcmp(fwd->connect_host, "socks") == 0)
2141: continue;
2142: printf("%s", lookup_opcode_name(code));
2143: if (fwd->listen_port == PORT_STREAMLOCAL)
2144: printf(" %s", fwd->listen_path);
2145: else if (fwd->listen_host == NULL)
2146: printf(" %d", fwd->listen_port);
2147: else {
2148: printf(" [%s]:%d",
2149: fwd->listen_host, fwd->listen_port);
2150: }
2151: if (code != oDynamicForward) {
2152: if (fwd->connect_port == PORT_STREAMLOCAL)
2153: printf(" %s", fwd->connect_path);
2154: else if (fwd->connect_host == NULL)
2155: printf(" %d", fwd->connect_port);
2156: else {
2157: printf(" [%s]:%d",
2158: fwd->connect_host, fwd->connect_port);
2159: }
2160: }
2161: printf("\n");
2162: }
2163: }
2164:
2165: void
2166: dump_client_config(Options *o, const char *host)
2167: {
2168: int i;
2169: char vbuf[5];
2170:
2171: /* Most interesting options first: user, host, port */
2172: dump_cfg_string(oUser, o->user);
2173: dump_cfg_string(oHostName, host);
2174: dump_cfg_int(oPort, o->port);
2175:
2176: /* Flag options */
2177: dump_cfg_fmtint(oAddressFamily, o->address_family);
2178: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2179: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2180: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2181: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2182: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2183: dump_cfg_fmtint(oCompression, o->compression);
2184: dump_cfg_fmtint(oControlMaster, o->control_master);
2185: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
2186: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
2187: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2188: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2189: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2190: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2191: #ifdef GSSAPI
2192: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2193: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2194: #endif /* GSSAPI */
2195: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2196: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2197: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2198: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2199: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2200: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2201: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2202: dump_cfg_fmtint(oProtocol, o->protocol);
2203: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2204: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2205: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2206: dump_cfg_fmtint(oRhostsRSAAuthentication, o->rhosts_rsa_authentication);
2207: dump_cfg_fmtint(oRSAAuthentication, o->rsa_authentication);
2208: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2209: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2210: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2211: dump_cfg_fmtint(oTunnel, o->tun_open);
2212: dump_cfg_fmtint(oUsePrivilegedPort, o->use_privileged_port);
2213: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2214: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
2215:
2216: /* Integer options */
2217: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2218: dump_cfg_int(oCompressionLevel, o->compression_level);
2219: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2220: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2221: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2222: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2223: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2224:
2225: /* String options */
2226: dump_cfg_string(oBindAddress, o->bind_address);
2227: dump_cfg_string(oCiphers, o->ciphers ? o->ciphers : KEX_CLIENT_ENCRYPT);
2228: dump_cfg_string(oControlPath, o->control_path);
2229: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms ? o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
2230: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
2231: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
2232: dump_cfg_string(oKexAlgorithms, o->kex_algorithms ? o->kex_algorithms : KEX_CLIENT_KEX);
2233: dump_cfg_string(oLocalCommand, o->local_command);
2234: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
2235: dump_cfg_string(oMacs, o->macs ? o->macs : KEX_CLIENT_MAC);
2236: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
2237: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
2238: dump_cfg_string(oProxyCommand, o->proxy_command);
2239: dump_cfg_string(oXAuthLocation, o->xauth_location);
2240:
2241: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2242: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2243: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2244:
2245: /* String array options */
2246: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2247: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
2248: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2249: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2250: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
2251:
2252: /* Special cases */
2253:
2254: /* oConnectTimeout */
2255: if (o->connection_timeout == -1)
2256: printf("connecttimeout none\n");
2257: else
2258: dump_cfg_int(oConnectTimeout, o->connection_timeout);
2259:
2260: /* oTunnelDevice */
2261: printf("tunneldevice");
2262: if (o->tun_local == SSH_TUNID_ANY)
2263: printf(" any");
2264: else
2265: printf(" %d", o->tun_local);
2266: if (o->tun_remote == SSH_TUNID_ANY)
2267: printf(":any");
2268: else
2269: printf(":%d", o->tun_remote);
2270: printf("\n");
2271:
2272: /* oCanonicalizePermittedCNAMEs */
2273: if ( o->num_permitted_cnames > 0) {
2274: printf("canonicalizePermittedcnames");
2275: for (i = 0; i < o->num_permitted_cnames; i++) {
2276: printf(" %s:%s", o->permitted_cnames[i].source_list,
2277: o->permitted_cnames[i].target_list);
2278: }
2279: printf("\n");
2280: }
2281:
2282: /* oCipher */
2283: if (o->cipher != SSH_CIPHER_NOT_SET)
2284: printf("Cipher %s\n", cipher_name(o->cipher));
2285:
2286: /* oControlPersist */
2287: if (o->control_persist == 0 || o->control_persist_timeout == 0)
2288: dump_cfg_fmtint(oControlPersist, o->control_persist);
2289: else
2290: dump_cfg_int(oControlPersist, o->control_persist_timeout);
2291:
2292: /* oEscapeChar */
2293: if (o->escape_char == SSH_ESCAPECHAR_NONE)
2294: printf("escapechar none\n");
2295: else {
2296: vis(vbuf, o->escape_char, VIS_WHITE, 0);
2297: printf("escapechar %s\n", vbuf);
2298: }
2299:
2300: /* oIPQoS */
2301: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2302: printf("%s\n", iptos2str(o->ip_qos_bulk));
2303:
2304: /* oRekeyLimit */
2305: printf("rekeylimit %lld %d\n",
2306: (long long)o->rekey_limit, o->rekey_interval);
2307:
2308: /* oStreamLocalBindMask */
2309: printf("streamlocalbindmask 0%o\n",
2310: o->fwd_opts.streamlocal_bind_mask);
1.1 deraadt 2311: }
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