Annotation of src/crypto/external/bsd/openssh/dist/readconf.c, Revision 1.32
1.30 kim 1: /* $NetBSD: readconf.c,v 1.29 2020/02/27 00:24:40 christos Exp $ */
1.32 ! christos 2: /* $OpenBSD: readconf.c,v 1.335 2020/08/27 02:11:09 djm Exp $ */
! 3:
1.1 christos 4: /*
5: * Author: Tatu Ylonen <ylo@cs.hut.fi>
6: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7: * All rights reserved
8: * Functions for reading the configuration files.
9: *
10: * As far as I am concerned, the code I have written for this software
11: * can be used freely for any purpose. Any derived versions of this
12: * software must be clearly marked as such, and if the derived work is
13: * incompatible with the protocol description in the RFC file, it must be
14: * called by a name other than "ssh" or "Secure Shell".
15: */
16:
1.2 christos 17: #include "includes.h"
1.30 kim 18: __RCSID("$NetBSD: readconf.c,v 1.29 2020/02/27 00:24:40 christos Exp $");
1.1 christos 19: #include <sys/types.h>
20: #include <sys/stat.h>
21: #include <sys/socket.h>
1.12 christos 22: #include <sys/wait.h>
23: #include <sys/un.h>
1.1 christos 24:
25: #include <netinet/in.h>
1.5 christos 26: #include <netinet/ip.h>
1.1 christos 27:
28: #include <ctype.h>
29: #include <errno.h>
1.12 christos 30: #include <fcntl.h>
1.19 christos 31: #include <glob.h>
1.1 christos 32: #include <netdb.h>
1.12 christos 33: #include <paths.h>
34: #include <pwd.h>
1.1 christos 35: #include <signal.h>
36: #include <stdio.h>
37: #include <string.h>
1.29 christos 38: #include <stdarg.h>
1.1 christos 39: #include <unistd.h>
1.2 christos 40: #include <limits.h>
1.11 christos 41: #include <util.h>
1.13 christos 42: #include <vis.h>
1.1 christos 43:
44: #include "xmalloc.h"
45: #include "ssh.h"
1.25 christos 46: #include "ssherr.h"
1.1 christos 47: #include "compat.h"
48: #include "cipher.h"
49: #include "pathnames.h"
50: #include "log.h"
1.13 christos 51: #include "sshkey.h"
1.12 christos 52: #include "misc.h"
1.1 christos 53: #include "readconf.h"
54: #include "match.h"
55: #include "kex.h"
56: #include "mac.h"
1.11 christos 57: #include "fmt_scaled.h"
1.12 christos 58: #include "uidswap.h"
1.13 christos 59: #include "myproposal.h"
60: #include "digest.h"
1.1 christos 61:
62: /* Format of the configuration file:
63:
64: # Configuration data is parsed as follows:
65: # 1. command line options
66: # 2. user-specific file
67: # 3. system-wide file
68: # Any configuration value is only changed the first time it is set.
69: # Thus, host-specific definitions should be at the beginning of the
70: # configuration file, and defaults at the end.
71:
72: # Host-specific declarations. These may override anything above. A single
73: # host may match multiple declarations; these are processed in the order
74: # that they are given in.
75:
76: Host *.ngs.fi ngs.fi
77: User foo
78:
79: Host fake.com
1.28 christos 80: Hostname another.host.name.real.org
1.1 christos 81: User blaah
82: Port 34289
83: ForwardX11 no
84: ForwardAgent no
85:
86: Host books.com
87: RemoteForward 9999 shadows.cs.hut.fi:9999
1.21 christos 88: Ciphers 3des-cbc
1.1 christos 89:
90: Host fascist.blob.com
91: Port 23123
92: User tylonen
93: PasswordAuthentication no
94:
95: Host puukko.hut.fi
96: User t35124p
97: ProxyCommand ssh-proxy %h %p
98:
99: Host *.fr
100: PublicKeyAuthentication no
101:
102: Host *.su
1.21 christos 103: Ciphers aes128-ctr
1.1 christos 104: PasswordAuthentication no
105:
106: Host vpn.fake.com
107: Tunnel yes
108: TunnelDevice 3
109:
110: # Defaults for various options
111: Host *
112: ForwardAgent no
113: ForwardX11 no
114: PasswordAuthentication yes
115: StrictHostKeyChecking yes
116: TcpKeepAlive no
117: IdentityFile ~/.ssh/identity
118: Port 22
119: EscapeChar ~
120:
121: */
122:
1.19 christos 123: static int read_config_file_depth(const char *filename, struct passwd *pw,
124: const char *host, const char *original_host, Options *options,
1.27 christos 125: int flags, int *activep, int *want_final_pass, int depth);
1.19 christos 126: static int process_config_line_depth(Options *options, struct passwd *pw,
127: const char *host, const char *original_host, char *line,
1.27 christos 128: const char *filename, int linenum, int *activep, int flags,
129: int *want_final_pass, int depth);
1.19 christos 130:
1.1 christos 131: /* Keyword tokens. */
132:
133: typedef enum {
134: oBadOption,
1.19 christos 135: oHost, oMatch, oInclude,
1.4 adam 136: oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout,
137: oGatewayPorts, oExitOnForwardFailure,
1.29 christos 138: oPasswordAuthentication,
1.1 christos 139: oChallengeResponseAuthentication, oXAuthLocation,
1.2 christos 140: #if defined(KRB4) || defined(KRB5)
141: oKerberosAuthentication,
142: #endif
143: #if defined(AFS) || defined(KRB5)
144: oKerberosTgtPassing,
145: #endif
146: #ifdef AFS
147: oAFSTokenPassing,
148: #endif
1.29 christos 149: oIdentityFile, oHostname, oPort, oRemoteForward, oLocalForward,
1.19 christos 150: oCertificateFile, oAddKeysToAgent, oIdentityAgent,
1.29 christos 151: oUser, oEscapeChar, oProxyCommand,
1.1 christos 152: oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts,
153: oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression,
1.29 christos 154: oTCPKeepAlive, oNumberOfPasswordPrompts,
155: oLogFacility, oLogLevel, oCiphers, oMacs,
1.13 christos 156: oPubkeyAuthentication,
1.1 christos 157: oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias,
158: oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication,
1.23 christos 159: oHostKeyAlgorithms, oBindAddress, oBindInterface, oPKCS11Provider,
1.1 christos 160: oClearAllForwardings, oNoHostAuthenticationForLocalhost,
161: oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
162: oAddressFamily, oGssAuthentication, oGssDelegateCreds,
163: oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
1.25 christos 164: oSendEnv, oSetEnv, oControlPath, oControlMaster, oControlPersist,
1.4 adam 165: oHashKnownHosts,
1.22 christos 166: oTunnel, oTunnelDevice,
167: oLocalCommand, oPermitLocalCommand, oRemoteCommand,
1.17 christos 168: oVisualHostKey,
1.12 christos 169: oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass,
170: oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots,
171: oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs,
1.13 christos 172: oStreamLocalBindMask, oStreamLocalBindUnlink, oRevokedHostKeys,
173: oFingerprintHash, oUpdateHostkeys, oHostbasedKeyTypes,
1.27 christos 174: oPubkeyAcceptedKeyTypes, oCASignatureAlgorithms, oProxyJump,
1.2 christos 175: oNoneEnabled, oTcpRcvBufPoll, oTcpRcvBuf, oNoneSwitch, oHPNDisabled,
176: oHPNBufferSize,
1.7 tls 177: oSendVersionFirst,
1.29 christos 178: oSecurityKeyProvider,
1.22 christos 179: oIgnore, oIgnoredUnknownOption, oDeprecated, oUnsupported
1.1 christos 180: } OpCodes;
181:
182: /* Textual representations of the tokens. */
183:
184: static struct {
185: const char *name;
186: OpCodes opcode;
187: } keywords[] = {
1.21 christos 188: /* Deprecated options */
1.22 christos 189: { "protocol", oIgnore }, /* NB. silently ignored */
190: { "cipher", oDeprecated },
1.21 christos 191: { "fallbacktorsh", oDeprecated },
192: { "globalknownhostsfile2", oDeprecated },
193: { "rhostsauthentication", oDeprecated },
194: { "userknownhostsfile2", oDeprecated },
195: { "useroaming", oDeprecated },
196: { "usersh", oDeprecated },
1.25 christos 197: { "useprivilegedport", oDeprecated },
1.21 christos 198:
199: /* Unsupported options */
1.30 kim 200: #ifdef AFS
201: { "afstokenpassing", oAFSTokenPassing },
202: #else
1.21 christos 203: { "afstokenpassing", oUnsupported },
1.30 kim 204: #endif
205: #if defined(KRB4) || defined(KRB5)
206: { "kerberosauthentication", oKerberosAuthentication },
207: #else
1.21 christos 208: { "kerberosauthentication", oUnsupported },
1.30 kim 209: #endif
210: #if defined(AFS) || defined(KRB5)
211: { "kerberostgtpassing", oKerberosTgtPassing },
212: { "kerberos5tgtpassing", oKerberosTgtPassing }, /* alias */
213: { "kerberos4tgtpassing", oKerberosTgtPassing }, /* alias */
214: #else
1.21 christos 215: { "kerberostgtpassing", oUnsupported },
1.30 kim 216: { "kerberos5tgtpassing", oUnsupported },
217: { "kerberos4tgtpassing", oUnsupported },
218: #endif
1.29 christos 219: { "rsaauthentication", oUnsupported },
220: { "rhostsrsaauthentication", oUnsupported },
221: { "compressionlevel", oUnsupported },
1.21 christos 222:
223: /* Sometimes-unsupported options */
224: #if defined(GSSAPI)
225: { "gssapiauthentication", oGssAuthentication },
226: { "gssapidelegatecredentials", oGssDelegateCreds },
227: # else
228: { "gssapiauthentication", oUnsupported },
229: { "gssapidelegatecredentials", oUnsupported },
230: #endif
231: #ifdef ENABLE_PKCS11
1.27 christos 232: { "pkcs11provider", oPKCS11Provider },
1.21 christos 233: { "smartcarddevice", oPKCS11Provider },
234: # else
235: { "smartcarddevice", oUnsupported },
236: { "pkcs11provider", oUnsupported },
237: #endif
238:
1.1 christos 239: { "forwardagent", oForwardAgent },
240: { "forwardx11", oForwardX11 },
241: { "forwardx11trusted", oForwardX11Trusted },
1.4 adam 242: { "forwardx11timeout", oForwardX11Timeout },
1.1 christos 243: { "exitonforwardfailure", oExitOnForwardFailure },
244: { "xauthlocation", oXAuthLocation },
245: { "gatewayports", oGatewayPorts },
246: { "passwordauthentication", oPasswordAuthentication },
247: { "kbdinteractiveauthentication", oKbdInteractiveAuthentication },
248: { "kbdinteractivedevices", oKbdInteractiveDevices },
249: { "pubkeyauthentication", oPubkeyAuthentication },
250: { "dsaauthentication", oPubkeyAuthentication }, /* alias */
251: { "hostbasedauthentication", oHostbasedAuthentication },
252: { "challengeresponseauthentication", oChallengeResponseAuthentication },
253: { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */
254: { "tisauthentication", oChallengeResponseAuthentication }, /* alias */
255: #if defined(GSSAPI)
256: { "gssapiauthentication", oGssAuthentication },
257: { "gssapidelegatecredentials", oGssDelegateCreds },
258: #else
259: { "gssapiauthentication", oUnsupported },
260: { "gssapidelegatecredentials", oUnsupported },
261: #endif
262: { "identityfile", oIdentityFile },
263: { "identityfile2", oIdentityFile }, /* obsolete */
264: { "identitiesonly", oIdentitiesOnly },
1.18 christos 265: { "certificatefile", oCertificateFile },
266: { "addkeystoagent", oAddKeysToAgent },
1.19 christos 267: { "identityagent", oIdentityAgent },
1.28 christos 268: { "hostname", oHostname },
1.1 christos 269: { "hostkeyalias", oHostKeyAlias },
270: { "proxycommand", oProxyCommand },
271: { "port", oPort },
272: { "ciphers", oCiphers },
273: { "macs", oMacs },
274: { "remoteforward", oRemoteForward },
275: { "localforward", oLocalForward },
276: { "user", oUser },
277: { "host", oHost },
1.12 christos 278: { "match", oMatch },
1.1 christos 279: { "escapechar", oEscapeChar },
280: { "globalknownhostsfile", oGlobalKnownHostsFile },
281: { "userknownhostsfile", oUserKnownHostsFile },
282: { "connectionattempts", oConnectionAttempts },
283: { "batchmode", oBatchMode },
284: { "checkhostip", oCheckHostIP },
285: { "stricthostkeychecking", oStrictHostKeyChecking },
286: { "compression", oCompression },
287: { "tcpkeepalive", oTCPKeepAlive },
288: { "keepalive", oTCPKeepAlive }, /* obsolete */
289: { "numberofpasswordprompts", oNumberOfPasswordPrompts },
1.22 christos 290: { "syslogfacility", oLogFacility },
1.1 christos 291: { "loglevel", oLogLevel },
292: { "dynamicforward", oDynamicForward },
293: { "preferredauthentications", oPreferredAuthentications },
294: { "hostkeyalgorithms", oHostKeyAlgorithms },
1.27 christos 295: { "casignaturealgorithms", oCASignatureAlgorithms },
1.1 christos 296: { "bindaddress", oBindAddress },
1.23 christos 297: { "bindinterface", oBindInterface },
1.1 christos 298: { "clearallforwardings", oClearAllForwardings },
299: { "enablesshkeysign", oEnableSSHKeysign },
300: { "verifyhostkeydns", oVerifyHostKeyDNS },
301: { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost },
302: { "rekeylimit", oRekeyLimit },
303: { "connecttimeout", oConnectTimeout },
304: { "addressfamily", oAddressFamily },
305: { "serveraliveinterval", oServerAliveInterval },
306: { "serveralivecountmax", oServerAliveCountMax },
307: { "sendenv", oSendEnv },
1.25 christos 308: { "setenv", oSetEnv },
1.1 christos 309: { "controlpath", oControlPath },
310: { "controlmaster", oControlMaster },
1.4 adam 311: { "controlpersist", oControlPersist },
1.1 christos 312: { "hashknownhosts", oHashKnownHosts },
1.19 christos 313: { "include", oInclude },
1.1 christos 314: { "tunnel", oTunnel },
315: { "tunneldevice", oTunnelDevice },
316: { "localcommand", oLocalCommand },
317: { "permitlocalcommand", oPermitLocalCommand },
1.22 christos 318: { "remotecommand", oRemoteCommand },
1.1 christos 319: { "visualhostkey", oVisualHostKey },
1.5 christos 320: { "kexalgorithms", oKexAlgorithms },
321: { "ipqos", oIPQoS },
1.6 christos 322: { "requesttty", oRequestTTY },
1.12 christos 323: { "proxyusefdpass", oProxyUseFdpass },
324: { "canonicaldomains", oCanonicalDomains },
325: { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal },
326: { "canonicalizehostname", oCanonicalizeHostname },
327: { "canonicalizemaxdots", oCanonicalizeMaxDots },
328: { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs },
329: { "streamlocalbindmask", oStreamLocalBindMask },
330: { "streamlocalbindunlink", oStreamLocalBindUnlink },
1.13 christos 331: { "revokedhostkeys", oRevokedHostKeys },
332: { "fingerprinthash", oFingerprintHash },
333: { "updatehostkeys", oUpdateHostkeys },
334: { "hostbasedkeytypes", oHostbasedKeyTypes },
1.16 christos 335: { "pubkeyacceptedkeytypes", oPubkeyAcceptedKeyTypes },
1.19 christos 336: { "proxyjump", oProxyJump },
1.2 christos 337: { "noneenabled", oNoneEnabled },
338: { "tcprcvbufpoll", oTcpRcvBufPoll },
339: { "tcprcvbuf", oTcpRcvBuf },
340: { "noneswitch", oNoneSwitch },
341: { "hpndisabled", oHPNDisabled },
342: { "hpnbuffersize", oHPNBufferSize },
1.7 tls 343: { "sendversionfirst", oSendVersionFirst },
1.12 christos 344: { "ignoreunknown", oIgnoreUnknown },
1.29 christos 345: { "proxyjump", oProxyJump },
346: { "securitykeyprovider", oSecurityKeyProvider },
1.19 christos 347:
1.1 christos 348: { NULL, oBadOption }
349: };
350:
1.29 christos 351: static char *kex_default_pk_alg_filtered;
352:
353: const char *
354: kex_default_pk_alg(void)
355: {
356: if (kex_default_pk_alg_filtered == NULL)
357: fatal("kex_default_pk_alg not initialized.");
358: return kex_default_pk_alg_filtered;
359: }
360:
1.31 christos 361: char *
362: ssh_connection_hash(const char *thishost, const char *host, const char *portstr,
363: const char *user)
364: {
365: struct ssh_digest_ctx *md;
366: u_char conn_hash[SSH_DIGEST_MAX_LENGTH];
367:
368: if ((md = ssh_digest_start(SSH_DIGEST_SHA1)) == NULL ||
369: ssh_digest_update(md, thishost, strlen(thishost)) < 0 ||
370: ssh_digest_update(md, host, strlen(host)) < 0 ||
371: ssh_digest_update(md, portstr, strlen(portstr)) < 0 ||
372: ssh_digest_update(md, user, strlen(user)) < 0 ||
373: ssh_digest_final(md, conn_hash, sizeof(conn_hash)) < 0)
374: fatal("%s: mux digest failed", __func__);
375: ssh_digest_free(md);
376: return tohex(conn_hash, ssh_digest_bytes(SSH_DIGEST_SHA1));
377: }
378:
1.1 christos 379: /*
380: * Adds a local TCP/IP port forward to options. Never returns if there is an
381: * error.
382: */
383:
384: void
1.12 christos 385: add_local_forward(Options *options, const struct Forward *newfwd)
1.1 christos 386: {
1.12 christos 387: struct Forward *fwd;
1.19 christos 388: int i;
1.4 adam 389:
1.19 christos 390: /* Don't add duplicates */
391: for (i = 0; i < options->num_local_forwards; i++) {
392: if (forward_equals(newfwd, options->local_forwards + i))
393: return;
394: }
1.14 christos 395: options->local_forwards = xreallocarray(options->local_forwards,
1.4 adam 396: options->num_local_forwards + 1,
397: sizeof(*options->local_forwards));
1.1 christos 398: fwd = &options->local_forwards[options->num_local_forwards++];
399:
400: fwd->listen_host = newfwd->listen_host;
401: fwd->listen_port = newfwd->listen_port;
1.12 christos 402: fwd->listen_path = newfwd->listen_path;
1.1 christos 403: fwd->connect_host = newfwd->connect_host;
404: fwd->connect_port = newfwd->connect_port;
1.12 christos 405: fwd->connect_path = newfwd->connect_path;
1.1 christos 406: }
407:
408: /*
409: * Adds a remote TCP/IP port forward to options. Never returns if there is
410: * an error.
411: */
412:
413: void
1.12 christos 414: add_remote_forward(Options *options, const struct Forward *newfwd)
1.1 christos 415: {
1.12 christos 416: struct Forward *fwd;
1.19 christos 417: int i;
1.4 adam 418:
1.19 christos 419: /* Don't add duplicates */
420: for (i = 0; i < options->num_remote_forwards; i++) {
421: if (forward_equals(newfwd, options->remote_forwards + i))
422: return;
423: }
1.14 christos 424: options->remote_forwards = xreallocarray(options->remote_forwards,
1.4 adam 425: options->num_remote_forwards + 1,
426: sizeof(*options->remote_forwards));
1.1 christos 427: fwd = &options->remote_forwards[options->num_remote_forwards++];
428:
429: fwd->listen_host = newfwd->listen_host;
430: fwd->listen_port = newfwd->listen_port;
1.12 christos 431: fwd->listen_path = newfwd->listen_path;
1.1 christos 432: fwd->connect_host = newfwd->connect_host;
433: fwd->connect_port = newfwd->connect_port;
1.12 christos 434: fwd->connect_path = newfwd->connect_path;
1.8 christos 435: fwd->handle = newfwd->handle;
1.4 adam 436: fwd->allocated_port = 0;
1.1 christos 437: }
438:
439: static void
440: clear_forwardings(Options *options)
441: {
442: int i;
443:
444: for (i = 0; i < options->num_local_forwards; i++) {
1.11 christos 445: free(options->local_forwards[i].listen_host);
1.12 christos 446: free(options->local_forwards[i].listen_path);
1.11 christos 447: free(options->local_forwards[i].connect_host);
1.12 christos 448: free(options->local_forwards[i].connect_path);
1.1 christos 449: }
1.4 adam 450: if (options->num_local_forwards > 0) {
1.11 christos 451: free(options->local_forwards);
1.4 adam 452: options->local_forwards = NULL;
453: }
1.1 christos 454: options->num_local_forwards = 0;
455: for (i = 0; i < options->num_remote_forwards; i++) {
1.11 christos 456: free(options->remote_forwards[i].listen_host);
1.12 christos 457: free(options->remote_forwards[i].listen_path);
1.11 christos 458: free(options->remote_forwards[i].connect_host);
1.12 christos 459: free(options->remote_forwards[i].connect_path);
1.1 christos 460: }
1.4 adam 461: if (options->num_remote_forwards > 0) {
1.11 christos 462: free(options->remote_forwards);
1.4 adam 463: options->remote_forwards = NULL;
464: }
1.1 christos 465: options->num_remote_forwards = 0;
466: options->tun_open = SSH_TUNMODE_NO;
467: }
468:
1.9 mlelstv 469: void
1.18 christos 470: add_certificate_file(Options *options, const char *path, int userprovided)
471: {
472: int i;
473:
474: if (options->num_certificate_files >= SSH_MAX_CERTIFICATE_FILES)
475: fatal("Too many certificate files specified (max %d)",
476: SSH_MAX_CERTIFICATE_FILES);
477:
478: /* Avoid registering duplicates */
479: for (i = 0; i < options->num_certificate_files; i++) {
480: if (options->certificate_file_userprovided[i] == userprovided &&
481: strcmp(options->certificate_files[i], path) == 0) {
482: debug2("%s: ignoring duplicate key %s", __func__, path);
483: return;
484: }
485: }
486:
487: options->certificate_file_userprovided[options->num_certificate_files] =
488: userprovided;
489: options->certificate_files[options->num_certificate_files++] =
490: xstrdup(path);
491: }
492:
493: void
1.9 mlelstv 494: add_identity_file(Options *options, const char *dir, const char *filename,
495: int userprovided)
496: {
497: char *path;
1.12 christos 498: int i;
1.9 mlelstv 499:
500: if (options->num_identity_files >= SSH_MAX_IDENTITY_FILES)
501: fatal("Too many identity files specified (max %d)",
502: SSH_MAX_IDENTITY_FILES);
503:
504: if (dir == NULL) /* no dir, filename is absolute */
505: path = xstrdup(filename);
1.22 christos 506: else if (xasprintf(&path, "%s%s", dir, filename) >= PATH_MAX)
507: fatal("Identity file path %s too long", path);
1.9 mlelstv 508:
1.12 christos 509: /* Avoid registering duplicates */
510: for (i = 0; i < options->num_identity_files; i++) {
511: if (options->identity_file_userprovided[i] == userprovided &&
512: strcmp(options->identity_files[i], path) == 0) {
513: debug2("%s: ignoring duplicate key %s", __func__, path);
514: free(path);
515: return;
516: }
517: }
518:
1.9 mlelstv 519: options->identity_file_userprovided[options->num_identity_files] =
520: userprovided;
521: options->identity_files[options->num_identity_files++] = path;
522: }
523:
1.12 christos 524: int
525: default_ssh_port(void)
526: {
527: static int port;
528: struct servent *sp;
529:
530: if (port == 0) {
531: sp = getservbyname(SSH_SERVICE_NAME, "tcp");
532: port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT;
533: }
534: return port;
535: }
536:
537: /*
538: * Execute a command in a shell.
539: * Return its exit status or -1 on abnormal exit.
540: */
541: static int
542: execute_in_shell(const char *cmd)
543: {
544: const char *shell;
545: pid_t pid;
546: int devnull, status;
547:
548: if ((shell = getenv("SHELL")) == NULL)
549: shell = _PATH_BSHELL;
550:
1.28 christos 551: if (access(shell, X_OK) == -1) {
552: fatal("Shell \"%s\" is not executable: %s",
553: shell, strerror(errno));
554: }
555:
1.12 christos 556: /* Need this to redirect subprocess stdin/out */
557: if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1)
558: fatal("open(/dev/null): %s", strerror(errno));
559:
560: debug("Executing command: '%.500s'", cmd);
561:
562: /* Fork and execute the command. */
563: if ((pid = fork()) == 0) {
564: char *argv[4];
565:
566: /* Redirect child stdin and stdout. Leave stderr */
567: if (dup2(devnull, STDIN_FILENO) == -1)
568: fatal("dup2: %s", strerror(errno));
569: if (dup2(devnull, STDOUT_FILENO) == -1)
570: fatal("dup2: %s", strerror(errno));
571: if (devnull > STDERR_FILENO)
572: close(devnull);
1.15 christos 573: if (closefrom(STDERR_FILENO + 1) == -1)
574: fatal("closefrom: %s", strerror(errno));
1.12 christos 575:
576: argv[0] = __UNCONST(shell);
577: argv[1] = __UNCONST("-c");
1.18 christos 578: argv[2] = xstrdup(cmd);
1.12 christos 579: argv[3] = NULL;
580:
581: execv(argv[0], argv);
582: error("Unable to execute '%.100s': %s", cmd, strerror(errno));
583: /* Die with signal to make this error apparent to parent. */
1.29 christos 584: ssh_signal(SIGTERM, SIG_DFL);
1.12 christos 585: kill(getpid(), SIGTERM);
586: _exit(1);
587: }
588: /* Parent. */
1.28 christos 589: if (pid == -1)
1.12 christos 590: fatal("%s: fork: %.100s", __func__, strerror(errno));
591:
592: close(devnull);
593:
594: while (waitpid(pid, &status, 0) == -1) {
595: if (errno != EINTR && errno != EAGAIN)
596: fatal("%s: waitpid: %s", __func__, strerror(errno));
597: }
598: if (!WIFEXITED(status)) {
599: error("command '%.100s' exited abnormally", cmd);
600: return -1;
1.13 christos 601: }
1.12 christos 602: debug3("command returned status %d", WEXITSTATUS(status));
603: return WEXITSTATUS(status);
604: }
605:
606: /*
607: * Parse and execute a Match directive.
608: */
609: static int
610: match_cfg_line(Options *options, char **condition, struct passwd *pw,
1.27 christos 611: const char *host_arg, const char *original_host, int final_pass,
612: int *want_final_pass, const char *filename, int linenum)
1.12 christos 613: {
1.13 christos 614: char *arg, *oattrib, *attrib, *cmd, *cp = *condition, *host, *criteria;
1.12 christos 615: const char *ruser;
1.13 christos 616: int r, port, this_result, result = 1, attributes = 0, negate;
1.12 christos 617: char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV];
1.25 christos 618: char uidstr[32];
1.12 christos 619:
620: /*
621: * Configuration is likely to be incomplete at this point so we
622: * must be prepared to use default values.
623: */
624: port = options->port <= 0 ? default_ssh_port() : options->port;
625: ruser = options->user == NULL ? pw->pw_name : options->user;
1.27 christos 626: if (final_pass) {
1.18 christos 627: host = xstrdup(options->hostname);
628: } else if (options->hostname != NULL) {
1.12 christos 629: /* NB. Please keep in sync with ssh.c:main() */
630: host = percent_expand(options->hostname,
631: "h", host_arg, (char *)NULL);
1.18 christos 632: } else {
1.12 christos 633: host = xstrdup(host_arg);
1.18 christos 634: }
1.12 christos 635:
1.13 christos 636: debug2("checking match for '%s' host %s originally %s",
637: cp, host, original_host);
638: while ((oattrib = attrib = strdelim(&cp)) && *attrib != '\0') {
639: criteria = NULL;
640: this_result = 1;
641: if ((negate = attrib[0] == '!'))
642: attrib++;
643: /* criteria "all" and "canonical" have no argument */
1.12 christos 644: if (strcasecmp(attrib, "all") == 0) {
1.13 christos 645: if (attributes > 1 ||
1.12 christos 646: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1.13 christos 647: error("%.200s line %d: '%s' cannot be combined "
648: "with other Match attributes",
649: filename, linenum, oattrib);
1.12 christos 650: result = -1;
651: goto out;
652: }
1.13 christos 653: if (result)
654: result = negate ? 0 : 1;
1.12 christos 655: goto out;
656: }
1.13 christos 657: attributes++;
1.27 christos 658: if (strcasecmp(attrib, "canonical") == 0 ||
659: strcasecmp(attrib, "final") == 0) {
660: /*
661: * If the config requests "Match final" then remember
662: * this so we can perform a second pass later.
663: */
664: if (strcasecmp(attrib, "final") == 0 &&
665: want_final_pass != NULL)
666: *want_final_pass = 1;
667: r = !!final_pass; /* force bitmask member to boolean */
1.13 christos 668: if (r == (negate ? 1 : 0))
669: this_result = result = 0;
670: debug3("%.200s line %d: %smatched '%s'",
671: filename, linenum,
672: this_result ? "" : "not ", oattrib);
673: continue;
674: }
675: /* All other criteria require an argument */
1.12 christos 676: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
677: error("Missing Match criteria for %s", attrib);
678: result = -1;
679: goto out;
680: }
681: if (strcasecmp(attrib, "host") == 0) {
1.13 christos 682: criteria = xstrdup(host);
1.14 christos 683: r = match_hostname(host, arg) == 1;
1.13 christos 684: if (r == (negate ? 1 : 0))
685: this_result = result = 0;
1.12 christos 686: } else if (strcasecmp(attrib, "originalhost") == 0) {
1.13 christos 687: criteria = xstrdup(original_host);
1.14 christos 688: r = match_hostname(original_host, arg) == 1;
1.13 christos 689: if (r == (negate ? 1 : 0))
690: this_result = result = 0;
1.12 christos 691: } else if (strcasecmp(attrib, "user") == 0) {
1.13 christos 692: criteria = xstrdup(ruser);
1.14 christos 693: r = match_pattern_list(ruser, arg, 0) == 1;
1.13 christos 694: if (r == (negate ? 1 : 0))
695: this_result = result = 0;
1.12 christos 696: } else if (strcasecmp(attrib, "localuser") == 0) {
1.13 christos 697: criteria = xstrdup(pw->pw_name);
1.14 christos 698: r = match_pattern_list(pw->pw_name, arg, 0) == 1;
1.13 christos 699: if (r == (negate ? 1 : 0))
700: this_result = result = 0;
1.12 christos 701: } else if (strcasecmp(attrib, "exec") == 0) {
1.32 ! christos 702: char *conn_hash_hex, *keyalias;
1.31 christos 703:
1.12 christos 704: if (gethostname(thishost, sizeof(thishost)) == -1)
705: fatal("gethostname: %s", strerror(errno));
706: strlcpy(shorthost, thishost, sizeof(shorthost));
707: shorthost[strcspn(thishost, ".")] = '\0';
708: snprintf(portstr, sizeof(portstr), "%d", port);
1.25 christos 709: snprintf(uidstr, sizeof(uidstr), "%llu",
710: (unsigned long long)pw->pw_uid);
1.31 christos 711: conn_hash_hex = ssh_connection_hash(thishost, host,
712: portstr, ruser);
1.32 ! christos 713: keyalias = options->host_key_alias ?
! 714: options->host_key_alias : host;
1.12 christos 715:
716: cmd = percent_expand(arg,
1.31 christos 717: "C", conn_hash_hex,
1.12 christos 718: "L", shorthost,
719: "d", pw->pw_dir,
720: "h", host,
1.32 ! christos 721: "k", keyalias,
1.12 christos 722: "l", thishost,
1.13 christos 723: "n", original_host,
1.12 christos 724: "p", portstr,
725: "r", ruser,
726: "u", pw->pw_name,
1.25 christos 727: "i", uidstr,
1.12 christos 728: (char *)NULL);
1.31 christos 729: free(conn_hash_hex);
1.12 christos 730: if (result != 1) {
731: /* skip execution if prior predicate failed */
1.13 christos 732: debug3("%.200s line %d: skipped exec "
733: "\"%.100s\"", filename, linenum, cmd);
734: free(cmd);
735: continue;
736: }
737: r = execute_in_shell(cmd);
738: if (r == -1) {
739: fatal("%.200s line %d: match exec "
740: "'%.100s' error", filename,
741: linenum, cmd);
1.12 christos 742: }
1.13 christos 743: criteria = xstrdup(cmd);
1.12 christos 744: free(cmd);
1.13 christos 745: /* Force exit status to boolean */
746: r = r == 0;
747: if (r == (negate ? 1 : 0))
748: this_result = result = 0;
1.12 christos 749: } else {
750: error("Unsupported Match attribute %s", attrib);
751: result = -1;
752: goto out;
753: }
1.13 christos 754: debug3("%.200s line %d: %smatched '%s \"%.100s\"' ",
755: filename, linenum, this_result ? "": "not ",
756: oattrib, criteria);
757: free(criteria);
1.12 christos 758: }
759: if (attributes == 0) {
760: error("One or more attributes required for Match");
761: result = -1;
762: goto out;
763: }
1.13 christos 764: out:
765: if (result != -1)
766: debug2("match %sfound", result ? "" : "not ");
1.12 christos 767: *condition = cp;
768: free(host);
769: return result;
770: }
771:
1.25 christos 772: /* Remove environment variable by pattern */
773: static void
774: rm_env(Options *options, const char *arg, const char *filename, int linenum)
775: {
1.32 ! christos 776: int i, j, onum_send_env = options->num_send_env;
1.25 christos 777: char *cp;
778:
779: /* Remove an environment variable */
780: for (i = 0; i < options->num_send_env; ) {
781: cp = xstrdup(options->send_env[i]);
782: if (!match_pattern(cp, arg + 1)) {
783: free(cp);
784: i++;
785: continue;
786: }
787: debug3("%s line %d: removing environment %s",
788: filename, linenum, cp);
789: free(cp);
790: free(options->send_env[i]);
791: options->send_env[i] = NULL;
792: for (j = i; j < options->num_send_env - 1; j++) {
793: options->send_env[j] = options->send_env[j + 1];
794: options->send_env[j + 1] = NULL;
795: }
796: options->num_send_env--;
797: /* NB. don't increment i */
798: }
1.32 ! christos 799: if (onum_send_env != options->num_send_env) {
! 800: options->send_env = xrecallocarray(options->send_env,
! 801: onum_send_env, options->num_send_env,
! 802: sizeof(*options->send_env));
! 803: }
1.25 christos 804: }
805:
1.1 christos 806: /*
807: * Returns the number of the token pointed to by cp or oBadOption.
808: */
809: static OpCodes
1.11 christos 810: parse_token(const char *cp, const char *filename, int linenum,
811: const char *ignored_unknown)
1.1 christos 812: {
1.11 christos 813: int i;
1.1 christos 814:
815: for (i = 0; keywords[i].name; i++)
1.11 christos 816: if (strcmp(cp, keywords[i].name) == 0)
1.1 christos 817: return keywords[i].opcode;
1.14 christos 818: if (ignored_unknown != NULL &&
819: match_pattern_list(cp, ignored_unknown, 1) == 1)
1.11 christos 820: return oIgnoredUnknownOption;
1.1 christos 821: error("%s: line %d: Bad configuration option: %s",
822: filename, linenum, cp);
823: return oBadOption;
824: }
825:
1.12 christos 826: /* Multistate option parsing */
827: struct multistate {
828: const char *key;
829: int value;
830: };
831: static const struct multistate multistate_flag[] = {
832: { "true", 1 },
833: { "false", 0 },
834: { "yes", 1 },
835: { "no", 0 },
836: { NULL, -1 }
837: };
838: static const struct multistate multistate_yesnoask[] = {
839: { "true", 1 },
840: { "false", 0 },
841: { "yes", 1 },
842: { "no", 0 },
843: { "ask", 2 },
844: { NULL, -1 }
845: };
1.22 christos 846: static const struct multistate multistate_strict_hostkey[] = {
847: { "true", SSH_STRICT_HOSTKEY_YES },
848: { "false", SSH_STRICT_HOSTKEY_OFF },
849: { "yes", SSH_STRICT_HOSTKEY_YES },
850: { "no", SSH_STRICT_HOSTKEY_OFF },
851: { "ask", SSH_STRICT_HOSTKEY_ASK },
852: { "off", SSH_STRICT_HOSTKEY_OFF },
853: { "accept-new", SSH_STRICT_HOSTKEY_NEW },
854: { NULL, -1 }
855: };
1.18 christos 856: static const struct multistate multistate_yesnoaskconfirm[] = {
857: { "true", 1 },
858: { "false", 0 },
859: { "yes", 1 },
860: { "no", 0 },
861: { "ask", 2 },
862: { "confirm", 3 },
863: { NULL, -1 }
864: };
1.12 christos 865: static const struct multistate multistate_addressfamily[] = {
866: { "inet", AF_INET },
867: { "inet6", AF_INET6 },
868: { "any", AF_UNSPEC },
869: { NULL, -1 }
870: };
871: static const struct multistate multistate_controlmaster[] = {
872: { "true", SSHCTL_MASTER_YES },
873: { "yes", SSHCTL_MASTER_YES },
874: { "false", SSHCTL_MASTER_NO },
875: { "no", SSHCTL_MASTER_NO },
876: { "auto", SSHCTL_MASTER_AUTO },
877: { "ask", SSHCTL_MASTER_ASK },
878: { "autoask", SSHCTL_MASTER_AUTO_ASK },
879: { NULL, -1 }
880: };
881: static const struct multistate multistate_tunnel[] = {
882: { "ethernet", SSH_TUNMODE_ETHERNET },
883: { "point-to-point", SSH_TUNMODE_POINTOPOINT },
884: { "true", SSH_TUNMODE_DEFAULT },
885: { "yes", SSH_TUNMODE_DEFAULT },
886: { "false", SSH_TUNMODE_NO },
887: { "no", SSH_TUNMODE_NO },
888: { NULL, -1 }
889: };
890: static const struct multistate multistate_requesttty[] = {
891: { "true", REQUEST_TTY_YES },
892: { "yes", REQUEST_TTY_YES },
893: { "false", REQUEST_TTY_NO },
894: { "no", REQUEST_TTY_NO },
895: { "force", REQUEST_TTY_FORCE },
896: { "auto", REQUEST_TTY_AUTO },
897: { NULL, -1 }
898: };
899: static const struct multistate multistate_canonicalizehostname[] = {
900: { "true", SSH_CANONICALISE_YES },
901: { "false", SSH_CANONICALISE_NO },
902: { "yes", SSH_CANONICALISE_YES },
903: { "no", SSH_CANONICALISE_NO },
904: { "always", SSH_CANONICALISE_ALWAYS },
905: { NULL, -1 }
906: };
1.29 christos 907: static const struct multistate multistate_compression[] = {
908: #ifdef WITH_ZLIB
909: { "yes", COMP_ZLIB },
910: #endif
911: { "no", COMP_NONE },
912: { NULL, -1 }
913: };
1.12 christos 914:
1.32 ! christos 915: static int
! 916: parse_multistate_value(const char *arg, const char *filename, int linenum,
! 917: const struct multistate *multistate_ptr)
! 918: {
! 919: int i;
! 920:
! 921: if (!arg || *arg == '\0')
! 922: fatal("%s line %d: missing argument.", filename, linenum);
! 923: for (i = 0; multistate_ptr[i].key != NULL; i++) {
! 924: if (strcasecmp(arg, multistate_ptr[i].key) == 0)
! 925: return multistate_ptr[i].value;
! 926: }
! 927: return -1;
! 928: }
! 929:
1.1 christos 930: /*
931: * Processes a single option line as used in the configuration files. This
932: * only sets those values that have not already been set.
933: */
934: int
1.12 christos 935: process_config_line(Options *options, struct passwd *pw, const char *host,
1.13 christos 936: const char *original_host, char *line, const char *filename,
937: int linenum, int *activep, int flags)
1.1 christos 938: {
1.19 christos 939: return process_config_line_depth(options, pw, host, original_host,
1.27 christos 940: line, filename, linenum, activep, flags, NULL, 0);
1.19 christos 941: }
942:
943: #define WHITESPACE " \t\r\n"
944: static int
945: process_config_line_depth(Options *options, struct passwd *pw, const char *host,
946: const char *original_host, char *line, const char *filename,
1.27 christos 947: int linenum, int *activep, int flags, int *want_final_pass, int depth)
1.19 christos 948: {
1.6 christos 949: char *s, **charptr, *endofnumber, *keyword, *arg, *arg2;
950: char **cpptr, fwdarg[256];
1.11 christos 951: u_int i, *uintptr, max_entries = 0;
1.19 christos 952: int r, oactive, negated, opcode, *intptr, value, value2, cmdline = 0;
1.22 christos 953: int remotefwd, dynamicfwd;
1.1 christos 954: LogLevel *log_level_ptr;
1.22 christos 955: SyslogFacility *log_facility_ptr;
1.11 christos 956: long long val64;
1.1 christos 957: size_t len;
1.12 christos 958: struct Forward fwd;
959: const struct multistate *multistate_ptr;
960: struct allowed_cname *cname;
1.19 christos 961: glob_t gl;
1.23 christos 962: const char *errstr;
1.12 christos 963:
964: if (activep == NULL) { /* We are processing a command line directive */
965: cmdline = 1;
966: activep = &cmdline;
967: }
1.1 christos 968:
1.21 christos 969: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1.14 christos 970: if ((len = strlen(line)) == 0)
971: return 0;
972: for (len--; len > 0; len--) {
1.21 christos 973: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1.1 christos 974: break;
975: line[len] = '\0';
976: }
977:
978: s = line;
979: /* Get the keyword. (Each line is supposed to begin with a keyword). */
980: if ((keyword = strdelim(&s)) == NULL)
981: return 0;
982: /* Ignore leading whitespace. */
983: if (*keyword == '\0')
984: keyword = strdelim(&s);
985: if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
986: return 0;
1.11 christos 987: /* Match lowercase keyword */
1.12 christos 988: lowercase(keyword);
1.1 christos 989:
1.11 christos 990: opcode = parse_token(keyword, filename, linenum,
991: options->ignored_unknown);
1.1 christos 992:
993: switch (opcode) {
994: case oBadOption:
995: /* don't panic, but count bad options */
996: return -1;
1.22 christos 997: case oIgnore:
998: return 0;
1.11 christos 999: case oIgnoredUnknownOption:
1000: debug("%s line %d: Ignored unknown option \"%s\"",
1001: filename, linenum, keyword);
1002: return 0;
1.1 christos 1003: case oConnectTimeout:
1004: intptr = &options->connection_timeout;
1005: parse_time:
1006: arg = strdelim(&s);
1007: if (!arg || *arg == '\0')
1008: fatal("%s line %d: missing time value.",
1009: filename, linenum);
1.13 christos 1010: if (strcmp(arg, "none") == 0)
1011: value = -1;
1012: else if ((value = convtime(arg)) == -1)
1.1 christos 1013: fatal("%s line %d: invalid time value.",
1014: filename, linenum);
1015: if (*activep && *intptr == -1)
1016: *intptr = value;
1017: break;
1018:
1019: case oForwardAgent:
1020: intptr = &options->forward_agent;
1.29 christos 1021:
1022: arg = strdelim(&s);
1023: if (!arg || *arg == '\0')
1024: fatal("%s line %d: missing argument.",
1025: filename, linenum);
1026:
1027: value = -1;
1028: multistate_ptr = multistate_flag;
1029: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1030: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1031: value = multistate_ptr[i].value;
1032: break;
1033: }
1034: }
1035: if (value != -1) {
1036: if (*activep && *intptr == -1)
1037: *intptr = value;
1038: break;
1039: }
1040: /* ForwardAgent wasn't 'yes' or 'no', assume a path */
1041: if (*activep && *intptr == -1)
1042: *intptr = 1;
1043:
1044: charptr = &options->forward_agent_sock_path;
1045: goto parse_agent_path;
1046:
1047: case oForwardX11:
1048: intptr = &options->forward_x11;
1.12 christos 1049: parse_flag:
1050: multistate_ptr = multistate_flag;
1051: parse_multistate:
1.1 christos 1052: arg = strdelim(&s);
1.32 ! christos 1053: if ((value = parse_multistate_value(arg, filename, linenum,
! 1054: multistate_ptr)) == -1) {
1.12 christos 1055: fatal("%s line %d: unsupported option \"%s\".",
1056: filename, linenum, arg);
1.32 ! christos 1057: }
1.1 christos 1058: if (*activep && *intptr == -1)
1059: *intptr = value;
1060: break;
1061:
1062: case oForwardX11Trusted:
1063: intptr = &options->forward_x11_trusted;
1064: goto parse_flag;
1.13 christos 1065:
1.4 adam 1066: case oForwardX11Timeout:
1067: intptr = &options->forward_x11_timeout;
1068: goto parse_time;
1.1 christos 1069:
1070: case oGatewayPorts:
1.12 christos 1071: intptr = &options->fwd_opts.gateway_ports;
1.1 christos 1072: goto parse_flag;
1073:
1074: case oExitOnForwardFailure:
1075: intptr = &options->exit_on_forward_failure;
1076: goto parse_flag;
1077:
1078: case oPasswordAuthentication:
1079: intptr = &options->password_authentication;
1080: goto parse_flag;
1081:
1082: case oKbdInteractiveAuthentication:
1083: intptr = &options->kbd_interactive_authentication;
1084: goto parse_flag;
1085:
1086: case oKbdInteractiveDevices:
1087: charptr = &options->kbd_interactive_devices;
1088: goto parse_string;
1089:
1090: case oPubkeyAuthentication:
1091: intptr = &options->pubkey_authentication;
1092: goto parse_flag;
1093:
1094: case oHostbasedAuthentication:
1095: intptr = &options->hostbased_authentication;
1096: goto parse_flag;
1097:
1098: case oChallengeResponseAuthentication:
1099: intptr = &options->challenge_response_authentication;
1100: goto parse_flag;
1101:
1.2 christos 1102: #if defined(KRB4) || defined(KRB5)
1103: case oKerberosAuthentication:
1104: intptr = &options->kerberos_authentication;
1105: goto parse_flag;
1106: #endif
1107: #if defined(AFS) || defined(KRB5)
1108: case oKerberosTgtPassing:
1109: intptr = &options->kerberos_tgt_passing;
1110: goto parse_flag;
1111: #endif
1112:
1.1 christos 1113: case oGssAuthentication:
1114: intptr = &options->gss_authentication;
1115: goto parse_flag;
1116:
1.2 christos 1117: #ifdef AFS
1118: case oAFSTokenPassing:
1119: intptr = &options->afs_token_passing;
1120: goto parse_flag;
1121: #endif
1122:
1.1 christos 1123: case oGssDelegateCreds:
1124: intptr = &options->gss_deleg_creds;
1125: goto parse_flag;
1126:
1127: case oBatchMode:
1128: intptr = &options->batch_mode;
1129: goto parse_flag;
1130:
1131: case oCheckHostIP:
1132: intptr = &options->check_host_ip;
1133: goto parse_flag;
1134:
1.2 christos 1135: case oNoneEnabled:
1136: intptr = &options->none_enabled;
1137: goto parse_flag;
1138:
1139: /* we check to see if the command comes from the */
1140: /* command line or not. If it does then enable it */
1141: /* otherwise fail. NONE should never be a default configuration */
1142: case oNoneSwitch:
1143: if(strcmp(filename,"command-line")==0)
1144: {
1145: intptr = &options->none_switch;
1146: goto parse_flag;
1147: } else {
1148: error("NoneSwitch is found in %.200s.\nYou may only use this configuration option from the command line", filename);
1149: error("Continuing...");
1150: debug("NoneSwitch directive found in %.200s.", filename);
1151: return 0;
1152: }
1153:
1154: case oHPNDisabled:
1155: intptr = &options->hpn_disabled;
1156: goto parse_flag;
1157:
1158: case oHPNBufferSize:
1159: intptr = &options->hpn_buffer_size;
1160: goto parse_int;
1161:
1162: case oTcpRcvBufPoll:
1163: intptr = &options->tcp_rcv_buf_poll;
1164: goto parse_flag;
1165:
1.1 christos 1166: case oVerifyHostKeyDNS:
1167: intptr = &options->verify_host_key_dns;
1.12 christos 1168: multistate_ptr = multistate_yesnoask;
1169: goto parse_multistate;
1.1 christos 1170:
1171: case oStrictHostKeyChecking:
1172: intptr = &options->strict_host_key_checking;
1.22 christos 1173: multistate_ptr = multistate_strict_hostkey;
1.12 christos 1174: goto parse_multistate;
1.1 christos 1175:
1176: case oCompression:
1177: intptr = &options->compression;
1.29 christos 1178: multistate_ptr = multistate_compression;
1179: goto parse_multistate;
1.1 christos 1180:
1181: case oTCPKeepAlive:
1182: intptr = &options->tcp_keep_alive;
1183: goto parse_flag;
1184:
1185: case oNoHostAuthenticationForLocalhost:
1186: intptr = &options->no_host_authentication_for_localhost;
1187: goto parse_flag;
1188:
1189: case oNumberOfPasswordPrompts:
1190: intptr = &options->number_of_password_prompts;
1191: goto parse_int;
1192:
1193: case oRekeyLimit:
1194: arg = strdelim(&s);
1195: if (!arg || *arg == '\0')
1.11 christos 1196: fatal("%.200s line %d: Missing argument.", filename,
1197: linenum);
1198: if (strcmp(arg, "default") == 0) {
1199: val64 = 0;
1200: } else {
1201: if (scan_scaled(arg, &val64) == -1)
1202: fatal("%.200s line %d: Bad number '%s': %s",
1203: filename, linenum, arg, strerror(errno));
1204: if (val64 != 0 && val64 < 16)
1205: fatal("%.200s line %d: RekeyLimit too small",
1206: filename, linenum);
1.1 christos 1207: }
1208: if (*activep && options->rekey_limit == -1)
1.18 christos 1209: options->rekey_limit = val64;
1.11 christos 1210: if (s != NULL) { /* optional rekey interval present */
1211: if (strcmp(s, "none") == 0) {
1212: (void)strdelim(&s); /* discard */
1213: break;
1214: }
1215: intptr = &options->rekey_interval;
1216: goto parse_time;
1217: }
1.1 christos 1218: break;
1219:
1220: case oIdentityFile:
1221: arg = strdelim(&s);
1222: if (!arg || *arg == '\0')
1223: fatal("%.200s line %d: Missing argument.", filename, linenum);
1224: if (*activep) {
1225: intptr = &options->num_identity_files;
1226: if (*intptr >= SSH_MAX_IDENTITY_FILES)
1227: fatal("%.200s line %d: Too many identity files specified (max %d).",
1228: filename, linenum, SSH_MAX_IDENTITY_FILES);
1.13 christos 1229: add_identity_file(options, NULL,
1230: arg, flags & SSHCONF_USERCONF);
1.1 christos 1231: }
1232: break;
1233:
1.18 christos 1234: case oCertificateFile:
1235: arg = strdelim(&s);
1236: if (!arg || *arg == '\0')
1237: fatal("%.200s line %d: Missing argument.",
1238: filename, linenum);
1239: if (*activep) {
1240: intptr = &options->num_certificate_files;
1241: if (*intptr >= SSH_MAX_CERTIFICATE_FILES) {
1242: fatal("%.200s line %d: Too many certificate "
1243: "files specified (max %d).",
1244: filename, linenum,
1245: SSH_MAX_CERTIFICATE_FILES);
1246: }
1247: add_certificate_file(options, arg,
1248: flags & SSHCONF_USERCONF);
1249: }
1250: break;
1251:
1.1 christos 1252: case oXAuthLocation:
1253: charptr=&options->xauth_location;
1254: goto parse_string;
1255:
1256: case oUser:
1257: charptr = &options->user;
1258: parse_string:
1259: arg = strdelim(&s);
1260: if (!arg || *arg == '\0')
1.6 christos 1261: fatal("%.200s line %d: Missing argument.",
1262: filename, linenum);
1.1 christos 1263: if (*activep && *charptr == NULL)
1264: *charptr = xstrdup(arg);
1265: break;
1266:
1267: case oGlobalKnownHostsFile:
1.6 christos 1268: cpptr = (char **)&options->system_hostfiles;
1269: uintptr = &options->num_system_hostfiles;
1270: max_entries = SSH_MAX_HOSTS_FILES;
1271: parse_char_array:
1272: if (*activep && *uintptr == 0) {
1273: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1274: if ((*uintptr) >= max_entries)
1275: fatal("%s line %d: "
1.31 christos 1276: "too many known hosts files.",
1.6 christos 1277: filename, linenum);
1278: cpptr[(*uintptr)++] = xstrdup(arg);
1279: }
1280: }
1281: return 0;
1.1 christos 1282:
1283: case oUserKnownHostsFile:
1.6 christos 1284: cpptr = (char **)&options->user_hostfiles;
1285: uintptr = &options->num_user_hostfiles;
1286: max_entries = SSH_MAX_HOSTS_FILES;
1287: goto parse_char_array;
1.1 christos 1288:
1.28 christos 1289: case oHostname:
1.1 christos 1290: charptr = &options->hostname;
1291: goto parse_string;
1292:
1293: case oHostKeyAlias:
1294: charptr = &options->host_key_alias;
1295: goto parse_string;
1296:
1297: case oPreferredAuthentications:
1298: charptr = &options->preferred_authentications;
1299: goto parse_string;
1300:
1301: case oBindAddress:
1302: charptr = &options->bind_address;
1303: goto parse_string;
1304:
1.23 christos 1305: case oBindInterface:
1306: charptr = &options->bind_interface;
1307: goto parse_string;
1308:
1.4 adam 1309: case oPKCS11Provider:
1310: charptr = &options->pkcs11_provider;
1.1 christos 1311: goto parse_string;
1312:
1.29 christos 1313: case oSecurityKeyProvider:
1314: charptr = &options->sk_provider;
1315: goto parse_string;
1316:
1.1 christos 1317: case oProxyCommand:
1318: charptr = &options->proxy_command;
1.19 christos 1319: /* Ignore ProxyCommand if ProxyJump already specified */
1320: if (options->jump_host != NULL)
1321: charptr = &options->jump_host; /* Skip below */
1.1 christos 1322: parse_command:
1323: if (s == NULL)
1324: fatal("%.200s line %d: Missing argument.", filename, linenum);
1325: len = strspn(s, WHITESPACE "=");
1326: if (*activep && *charptr == NULL)
1327: *charptr = xstrdup(s + len);
1328: return 0;
1329:
1.19 christos 1330: case oProxyJump:
1331: if (s == NULL) {
1332: fatal("%.200s line %d: Missing argument.",
1333: filename, linenum);
1334: }
1335: len = strspn(s, WHITESPACE "=");
1336: if (parse_jump(s + len, options, *activep) == -1) {
1337: fatal("%.200s line %d: Invalid ProxyJump \"%s\"",
1338: filename, linenum, s + len);
1339: }
1340: return 0;
1341:
1.1 christos 1342: case oPort:
1.27 christos 1343: arg = strdelim(&s);
1344: if (!arg || *arg == '\0')
1345: fatal("%.200s line %d: Missing argument.",
1346: filename, linenum);
1347: value = a2port(arg);
1348: if (value <= 0)
1349: fatal("%.200s line %d: Bad port '%s'.",
1350: filename, linenum, arg);
1351: if (*activep && options->port == -1)
1352: options->port = value;
1353: break;
1354:
1355: case oConnectionAttempts:
1356: intptr = &options->connection_attempts;
1.1 christos 1357: parse_int:
1358: arg = strdelim(&s);
1.23 christos 1359: if ((errstr = atoi_err(arg, &value)) != NULL)
1360: fatal("%s line %d: integer value %s.",
1361: filename, linenum, errstr);
1.1 christos 1362: if (*activep && *intptr == -1)
1363: *intptr = value;
1364: break;
1365:
1.2 christos 1366: case oTcpRcvBuf:
1367: intptr = &options->tcp_rcv_buf;
1368: goto parse_int;
1369:
1.1 christos 1370: case oCiphers:
1371: arg = strdelim(&s);
1372: if (!arg || *arg == '\0')
1373: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.28 christos 1374: if (*arg != '-' &&
1375: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.1 christos 1376: fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
1377: filename, linenum, arg ? arg : "<NONE>");
1378: if (*activep && options->ciphers == NULL)
1379: options->ciphers = xstrdup(arg);
1380: break;
1381:
1382: case oMacs:
1383: arg = strdelim(&s);
1384: if (!arg || *arg == '\0')
1385: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.28 christos 1386: if (*arg != '-' &&
1387: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1388: fatal("%.200s line %d: Bad SSH2 MAC spec '%s'.",
1.1 christos 1389: filename, linenum, arg ? arg : "<NONE>");
1390: if (*activep && options->macs == NULL)
1391: options->macs = xstrdup(arg);
1392: break;
1393:
1.5 christos 1394: case oKexAlgorithms:
1395: arg = strdelim(&s);
1396: if (!arg || *arg == '\0')
1397: fatal("%.200s line %d: Missing argument.",
1398: filename, linenum);
1.21 christos 1399: if (*arg != '-' &&
1.28 christos 1400: !kex_names_valid(*arg == '+' || *arg == '^' ?
1401: arg + 1 : arg))
1.5 christos 1402: fatal("%.200s line %d: Bad SSH2 KexAlgorithms '%s'.",
1403: filename, linenum, arg ? arg : "<NONE>");
1404: if (*activep && options->kex_algorithms == NULL)
1405: options->kex_algorithms = xstrdup(arg);
1406: break;
1407:
1.1 christos 1408: case oHostKeyAlgorithms:
1.16 christos 1409: charptr = &options->hostkeyalgorithms;
1410: parse_keytypes:
1.1 christos 1411: arg = strdelim(&s);
1412: if (!arg || *arg == '\0')
1.16 christos 1413: fatal("%.200s line %d: Missing argument.",
1414: filename, linenum);
1.21 christos 1415: if (*arg != '-' &&
1.28 christos 1416: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1417: arg + 1 : arg, 1))
1.16 christos 1418: fatal("%s line %d: Bad key types '%s'.",
1419: filename, linenum, arg ? arg : "<NONE>");
1420: if (*activep && *charptr == NULL)
1421: *charptr = xstrdup(arg);
1.1 christos 1422: break;
1423:
1.27 christos 1424: case oCASignatureAlgorithms:
1425: charptr = &options->ca_sign_algorithms;
1426: goto parse_keytypes;
1427:
1.1 christos 1428: case oLogLevel:
1429: log_level_ptr = &options->log_level;
1430: arg = strdelim(&s);
1431: value = log_level_number(arg);
1432: if (value == SYSLOG_LEVEL_NOT_SET)
1433: fatal("%.200s line %d: unsupported log level '%s'",
1434: filename, linenum, arg ? arg : "<NONE>");
1435: if (*activep && *log_level_ptr == SYSLOG_LEVEL_NOT_SET)
1436: *log_level_ptr = (LogLevel) value;
1437: break;
1438:
1.22 christos 1439: case oLogFacility:
1440: log_facility_ptr = &options->log_facility;
1441: arg = strdelim(&s);
1442: value = log_facility_number(arg);
1443: if (value == SYSLOG_FACILITY_NOT_SET)
1444: fatal("%.200s line %d: unsupported log facility '%s'",
1445: filename, linenum, arg ? arg : "<NONE>");
1446: if (*log_facility_ptr == -1)
1447: *log_facility_ptr = (SyslogFacility) value;
1448: break;
1449:
1.1 christos 1450: case oLocalForward:
1451: case oRemoteForward:
1452: case oDynamicForward:
1453: arg = strdelim(&s);
1454: if (arg == NULL || *arg == '\0')
1455: fatal("%.200s line %d: Missing port argument.",
1456: filename, linenum);
1457:
1.22 christos 1458: remotefwd = (opcode == oRemoteForward);
1459: dynamicfwd = (opcode == oDynamicForward);
1460:
1461: if (!dynamicfwd) {
1.1 christos 1462: arg2 = strdelim(&s);
1.22 christos 1463: if (arg2 == NULL || *arg2 == '\0') {
1464: if (remotefwd)
1465: dynamicfwd = 1;
1466: else
1467: fatal("%.200s line %d: Missing target "
1468: "argument.", filename, linenum);
1469: } else {
1470: /* construct a string for parse_forward */
1471: snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg,
1472: arg2);
1473: }
1474: }
1475: if (dynamicfwd)
1.1 christos 1476: strlcpy(fwdarg, arg, sizeof(fwdarg));
1477:
1.22 christos 1478: if (parse_forward(&fwd, fwdarg, dynamicfwd, remotefwd) == 0)
1.1 christos 1479: fatal("%.200s line %d: Bad forwarding specification.",
1480: filename, linenum);
1481:
1482: if (*activep) {
1.22 christos 1483: if (remotefwd) {
1484: add_remote_forward(options, &fwd);
1485: } else {
1.1 christos 1486: add_local_forward(options, &fwd);
1.22 christos 1487: }
1.1 christos 1488: }
1489: break;
1490:
1491: case oClearAllForwardings:
1492: intptr = &options->clear_forwardings;
1493: goto parse_flag;
1494:
1495: case oHost:
1.12 christos 1496: if (cmdline)
1497: fatal("Host directive not supported as a command-line "
1498: "option");
1.1 christos 1499: *activep = 0;
1.6 christos 1500: arg2 = NULL;
1501: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.19 christos 1502: if ((flags & SSHCONF_NEVERMATCH) != 0)
1503: break;
1.6 christos 1504: negated = *arg == '!';
1505: if (negated)
1506: arg++;
1.1 christos 1507: if (match_pattern(host, arg)) {
1.6 christos 1508: if (negated) {
1509: debug("%.200s line %d: Skipping Host "
1510: "block because of negated match "
1511: "for %.100s", filename, linenum,
1512: arg);
1513: *activep = 0;
1514: break;
1515: }
1516: if (!*activep)
1517: arg2 = arg; /* logged below */
1.1 christos 1518: *activep = 1;
1519: }
1.6 christos 1520: }
1521: if (*activep)
1522: debug("%.200s line %d: Applying options for %.100s",
1523: filename, linenum, arg2);
1.1 christos 1524: /* Avoid garbage check below, as strdelim is done. */
1525: return 0;
1526:
1.12 christos 1527: case oMatch:
1528: if (cmdline)
1529: fatal("Host directive not supported as a command-line "
1530: "option");
1.13 christos 1531: value = match_cfg_line(options, &s, pw, host, original_host,
1.27 christos 1532: flags & SSHCONF_FINAL, want_final_pass,
1533: filename, linenum);
1.12 christos 1534: if (value < 0)
1535: fatal("%.200s line %d: Bad Match condition", filename,
1536: linenum);
1.19 christos 1537: *activep = (flags & SSHCONF_NEVERMATCH) ? 0 : value;
1.12 christos 1538: break;
1539:
1.1 christos 1540: case oEscapeChar:
1541: intptr = &options->escape_char;
1542: arg = strdelim(&s);
1543: if (!arg || *arg == '\0')
1544: fatal("%.200s line %d: Missing argument.", filename, linenum);
1.2 christos 1545: value = 0; /* To avoid compiler warning... */
1.14 christos 1546: if (strcmp(arg, "none") == 0)
1547: value = SSH_ESCAPECHAR_NONE;
1548: else if (arg[1] == '\0')
1549: value = (u_char) arg[0];
1550: else if (arg[0] == '^' && arg[2] == 0 &&
1.1 christos 1551: (u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
1552: value = (u_char) arg[1] & 31;
1553: else {
1554: fatal("%.200s line %d: Bad escape character.",
1555: filename, linenum);
1556: /* NOTREACHED */
1557: value = 0; /* Avoid compiler warning. */
1558: }
1559: if (*activep && *intptr == -1)
1560: *intptr = value;
1561: break;
1562:
1563: case oAddressFamily:
1564: intptr = &options->address_family;
1.12 christos 1565: multistate_ptr = multistate_addressfamily;
1566: goto parse_multistate;
1.1 christos 1567:
1568: case oEnableSSHKeysign:
1569: intptr = &options->enable_ssh_keysign;
1570: goto parse_flag;
1571:
1572: case oIdentitiesOnly:
1573: intptr = &options->identities_only;
1574: goto parse_flag;
1575:
1576: case oServerAliveInterval:
1577: intptr = &options->server_alive_interval;
1578: goto parse_time;
1579:
1580: case oServerAliveCountMax:
1581: intptr = &options->server_alive_count_max;
1582: goto parse_int;
1583:
1584: case oSendEnv:
1585: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1586: if (strchr(arg, '=') != NULL)
1587: fatal("%s line %d: Invalid environment name.",
1588: filename, linenum);
1589: if (!*activep)
1590: continue;
1.25 christos 1591: if (*arg == '-') {
1592: /* Removing an env var */
1593: rm_env(options, arg, filename, linenum);
1594: continue;
1595: } else {
1596: /* Adding an env var */
1597: if (options->num_send_env >= INT_MAX)
1598: fatal("%s line %d: too many send env.",
1599: filename, linenum);
1600: options->send_env = xrecallocarray(
1601: options->send_env, options->num_send_env,
1602: options->num_send_env + 1,
1603: sizeof(*options->send_env));
1604: options->send_env[options->num_send_env++] =
1605: xstrdup(arg);
1606: }
1607: }
1608: break;
1609:
1610: case oSetEnv:
1611: value = options->num_setenv;
1612: while ((arg = strdelimw(&s)) != NULL && *arg != '\0') {
1613: if (strchr(arg, '=') == NULL)
1614: fatal("%s line %d: Invalid SetEnv.",
1615: filename, linenum);
1616: if (!*activep || value != 0)
1617: continue;
1618: /* Adding a setenv var */
1619: if (options->num_setenv >= INT_MAX)
1620: fatal("%s line %d: too many SetEnv.",
1.1 christos 1621: filename, linenum);
1.25 christos 1622: options->setenv = xrecallocarray(
1623: options->setenv, options->num_setenv,
1624: options->num_setenv + 1, sizeof(*options->setenv));
1625: options->setenv[options->num_setenv++] = xstrdup(arg);
1.1 christos 1626: }
1627: break;
1628:
1629: case oControlPath:
1630: charptr = &options->control_path;
1631: goto parse_string;
1632:
1633: case oControlMaster:
1634: intptr = &options->control_master;
1.12 christos 1635: multistate_ptr = multistate_controlmaster;
1636: goto parse_multistate;
1.1 christos 1637:
1.4 adam 1638: case oControlPersist:
1639: /* no/false/yes/true, or a time spec */
1640: intptr = &options->control_persist;
1641: arg = strdelim(&s);
1642: if (!arg || *arg == '\0')
1643: fatal("%.200s line %d: Missing ControlPersist"
1644: " argument.", filename, linenum);
1645: value = 0;
1646: value2 = 0; /* timeout */
1647: if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0)
1648: value = 0;
1649: else if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0)
1650: value = 1;
1651: else if ((value2 = convtime(arg)) >= 0)
1652: value = 1;
1653: else
1654: fatal("%.200s line %d: Bad ControlPersist argument.",
1655: filename, linenum);
1656: if (*activep && *intptr == -1) {
1657: *intptr = value;
1658: options->control_persist_timeout = value2;
1659: }
1660: break;
1661:
1.1 christos 1662: case oHashKnownHosts:
1663: intptr = &options->hash_known_hosts;
1664: goto parse_flag;
1665:
1666: case oTunnel:
1667: intptr = &options->tun_open;
1.12 christos 1668: multistate_ptr = multistate_tunnel;
1669: goto parse_multistate;
1.1 christos 1670:
1671: case oTunnelDevice:
1672: arg = strdelim(&s);
1673: if (!arg || *arg == '\0')
1674: fatal("%.200s line %d: Missing argument.", filename, linenum);
1675: value = a2tun(arg, &value2);
1676: if (value == SSH_TUNID_ERR)
1677: fatal("%.200s line %d: Bad tun device.", filename, linenum);
1678: if (*activep) {
1679: options->tun_local = value;
1680: options->tun_remote = value2;
1681: }
1682: break;
1683:
1684: case oLocalCommand:
1685: charptr = &options->local_command;
1686: goto parse_command;
1687:
1688: case oPermitLocalCommand:
1689: intptr = &options->permit_local_command;
1690: goto parse_flag;
1691:
1.22 christos 1692: case oRemoteCommand:
1693: charptr = &options->remote_command;
1694: goto parse_command;
1695:
1.1 christos 1696: case oVisualHostKey:
1697: intptr = &options->visual_host_key;
1698: goto parse_flag;
1699:
1.19 christos 1700: case oInclude:
1701: if (cmdline)
1702: fatal("Include directive not supported as a "
1703: "command-line option");
1704: value = 0;
1705: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1706: /*
1707: * Ensure all paths are anchored. User configuration
1708: * files may begin with '~/' but system configurations
1709: * must not. If the path is relative, then treat it
1710: * as living in ~/.ssh for user configurations or
1711: * /etc/ssh for system ones.
1712: */
1713: if (*arg == '~' && (flags & SSHCONF_USERCONF) == 0)
1714: fatal("%.200s line %d: bad include path %s.",
1715: filename, linenum, arg);
1.27 christos 1716: if (!path_absolute(arg) && *arg != '~') {
1.19 christos 1717: xasprintf(&arg2, "%s/%s",
1718: (flags & SSHCONF_USERCONF) ?
1719: "~/" _PATH_SSH_USER_DIR : SSHDIR, arg);
1720: } else
1721: arg2 = xstrdup(arg);
1722: memset(&gl, 0, sizeof(gl));
1723: r = glob(arg2, GLOB_TILDE | GLOB_LIMIT, NULL, &gl);
1724: if (r == GLOB_NOMATCH) {
1725: debug("%.200s line %d: include %s matched no "
1726: "files",filename, linenum, arg2);
1.21 christos 1727: free(arg2);
1.19 christos 1728: continue;
1729: } else if (r != 0)
1730: fatal("%.200s line %d: glob failed for %s.",
1731: filename, linenum, arg2);
1732: free(arg2);
1733: oactive = *activep;
1.29 christos 1734: for (i = 0; i < gl.gl_pathc; i++) {
1.19 christos 1735: debug3("%.200s line %d: Including file %s "
1736: "depth %d%s", filename, linenum,
1737: gl.gl_pathv[i], depth,
1738: oactive ? "" : " (parse only)");
1739: r = read_config_file_depth(gl.gl_pathv[i],
1740: pw, host, original_host, options,
1741: flags | SSHCONF_CHECKPERM |
1742: (oactive ? 0 : SSHCONF_NEVERMATCH),
1.27 christos 1743: activep, want_final_pass, depth + 1);
1.21 christos 1744: if (r != 1 && errno != ENOENT) {
1745: fatal("Can't open user config file "
1746: "%.100s: %.100s", gl.gl_pathv[i],
1747: strerror(errno));
1748: }
1.19 christos 1749: /*
1750: * don't let Match in includes clobber the
1751: * containing file's Match state.
1752: */
1753: *activep = oactive;
1754: if (r != 1)
1755: value = -1;
1756: }
1757: globfree(&gl);
1758: }
1759: if (value != 0)
1760: return value;
1761: break;
1762:
1.5 christos 1763: case oIPQoS:
1764: arg = strdelim(&s);
1765: if ((value = parse_ipqos(arg)) == -1)
1766: fatal("%s line %d: Bad IPQoS value: %s",
1767: filename, linenum, arg);
1768: arg = strdelim(&s);
1769: if (arg == NULL)
1770: value2 = value;
1771: else if ((value2 = parse_ipqos(arg)) == -1)
1772: fatal("%s line %d: Bad IPQoS value: %s",
1773: filename, linenum, arg);
1774: if (*activep) {
1775: options->ip_qos_interactive = value;
1776: options->ip_qos_bulk = value2;
1777: }
1778: break;
1779:
1.6 christos 1780: case oRequestTTY:
1781: intptr = &options->request_tty;
1.12 christos 1782: multistate_ptr = multistate_requesttty;
1783: goto parse_multistate;
1.6 christos 1784:
1.7 tls 1785: case oSendVersionFirst:
1786: intptr = &options->send_version_first;
1787: goto parse_flag;
1788:
1.11 christos 1789: case oIgnoreUnknown:
1790: charptr = &options->ignored_unknown;
1791: goto parse_string;
1792:
1.12 christos 1793: case oProxyUseFdpass:
1794: intptr = &options->proxy_use_fdpass;
1795: goto parse_flag;
1796:
1797: case oCanonicalDomains:
1798: value = options->num_canonical_domains != 0;
1799: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1.23 christos 1800: if (!valid_domain(arg, 1, &errstr)) {
1801: fatal("%s line %d: %s", filename, linenum,
1802: errstr);
1803: }
1.12 christos 1804: if (!*activep || value)
1805: continue;
1806: if (options->num_canonical_domains >= MAX_CANON_DOMAINS)
1807: fatal("%s line %d: too many hostname suffixes.",
1808: filename, linenum);
1809: options->canonical_domains[
1810: options->num_canonical_domains++] = xstrdup(arg);
1811: }
1812: break;
1813:
1814: case oCanonicalizePermittedCNAMEs:
1815: value = options->num_permitted_cnames != 0;
1816: while ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1817: /* Either '*' for everything or 'list:list' */
1818: if (strcmp(arg, "*") == 0)
1819: arg2 = arg;
1820: else {
1821: lowercase(arg);
1822: if ((arg2 = strchr(arg, ':')) == NULL ||
1823: arg2[1] == '\0') {
1824: fatal("%s line %d: "
1825: "Invalid permitted CNAME \"%s\"",
1826: filename, linenum, arg);
1827: }
1828: *arg2 = '\0';
1829: arg2++;
1830: }
1831: if (!*activep || value)
1832: continue;
1833: if (options->num_permitted_cnames >= MAX_CANON_DOMAINS)
1834: fatal("%s line %d: too many permitted CNAMEs.",
1835: filename, linenum);
1836: cname = options->permitted_cnames +
1837: options->num_permitted_cnames++;
1838: cname->source_list = xstrdup(arg);
1839: cname->target_list = xstrdup(arg2);
1840: }
1841: break;
1842:
1843: case oCanonicalizeHostname:
1844: intptr = &options->canonicalize_hostname;
1845: multistate_ptr = multistate_canonicalizehostname;
1846: goto parse_multistate;
1847:
1848: case oCanonicalizeMaxDots:
1849: intptr = &options->canonicalize_max_dots;
1850: goto parse_int;
1851:
1852: case oCanonicalizeFallbackLocal:
1853: intptr = &options->canonicalize_fallback_local;
1854: goto parse_flag;
1855:
1856: case oStreamLocalBindMask:
1857: arg = strdelim(&s);
1858: if (!arg || *arg == '\0')
1859: fatal("%.200s line %d: Missing StreamLocalBindMask argument.", filename, linenum);
1860: /* Parse mode in octal format */
1861: value = strtol(arg, &endofnumber, 8);
1862: if (arg == endofnumber || value < 0 || value > 0777)
1863: fatal("%.200s line %d: Bad mask.", filename, linenum);
1864: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1865: break;
1866:
1867: case oStreamLocalBindUnlink:
1868: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1869: goto parse_flag;
1870:
1.13 christos 1871: case oRevokedHostKeys:
1872: charptr = &options->revoked_host_keys;
1873: goto parse_string;
1874:
1875: case oFingerprintHash:
1876: intptr = &options->fingerprint_hash;
1877: arg = strdelim(&s);
1878: if (!arg || *arg == '\0')
1879: fatal("%.200s line %d: Missing argument.",
1880: filename, linenum);
1881: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1882: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1883: filename, linenum, arg);
1884: if (*activep && *intptr == -1)
1885: *intptr = value;
1886: break;
1887:
1888: case oUpdateHostkeys:
1889: intptr = &options->update_hostkeys;
1890: multistate_ptr = multistate_yesnoask;
1891: goto parse_multistate;
1892:
1893: case oHostbasedKeyTypes:
1894: charptr = &options->hostbased_key_types;
1.16 christos 1895: goto parse_keytypes;
1896:
1897: case oPubkeyAcceptedKeyTypes:
1898: charptr = &options->pubkey_key_types;
1899: goto parse_keytypes;
1.13 christos 1900:
1.18 christos 1901: case oAddKeysToAgent:
1.32 ! christos 1902: arg = strdelim(&s);
! 1903: arg2 = strdelim(&s);
! 1904: value = parse_multistate_value(arg, filename, linenum,
! 1905: multistate_yesnoaskconfirm);
! 1906: value2 = 0; /* unlimited lifespan by default */
! 1907: if (value == 3 && arg2 != NULL) {
! 1908: /* allow "AddKeysToAgent confirm 5m" */
! 1909: if ((value2 = convtime(arg2)) == -1 || value2 > INT_MAX)
! 1910: fatal("%s line %d: invalid time value.",
! 1911: filename, linenum);
! 1912: } else if (value == -1 && arg2 == NULL) {
! 1913: if ((value2 = convtime(arg)) == -1 || value2 > INT_MAX)
! 1914: fatal("%s line %d: unsupported option",
! 1915: filename, linenum);
! 1916: value = 1; /* yes */
! 1917: } else if (value == -1 || arg2 != NULL) {
! 1918: fatal("%s line %d: unsupported option",
! 1919: filename, linenum);
! 1920: }
! 1921: if (*activep && options->add_keys_to_agent == -1) {
! 1922: options->add_keys_to_agent = value;
! 1923: options->add_keys_to_agent_lifespan = value2;
! 1924: }
! 1925: break;
1.18 christos 1926:
1.19 christos 1927: case oIdentityAgent:
1928: charptr = &options->identity_agent;
1.27 christos 1929: arg = strdelim(&s);
1930: if (!arg || *arg == '\0')
1931: fatal("%.200s line %d: Missing argument.",
1932: filename, linenum);
1.29 christos 1933: parse_agent_path:
1.27 christos 1934: /* Extra validation if the string represents an env var. */
1.32 ! christos 1935: if ((arg2 = dollar_expand(&r, arg)) == NULL || r)
! 1936: fatal("%.200s line %d: Invalid environment expansion "
! 1937: "%s.", filename, linenum, arg);
! 1938: free(arg2);
! 1939: /* check for legacy environment format */
! 1940: if (arg[0] == '$' && arg[1] != '{' && !valid_env_name(arg + 1)) {
1.27 christos 1941: fatal("%.200s line %d: Invalid environment name %s.",
1942: filename, linenum, arg);
1943: }
1944: if (*activep && *charptr == NULL)
1945: *charptr = xstrdup(arg);
1946: break;
1.19 christos 1947:
1.1 christos 1948: case oDeprecated:
1949: debug("%s line %d: Deprecated option \"%s\"",
1950: filename, linenum, keyword);
1951: return 0;
1952:
1953: case oUnsupported:
1954: error("%s line %d: Unsupported option \"%s\"",
1955: filename, linenum, keyword);
1956: return 0;
1957:
1958: default:
1.13 christos 1959: fatal("%s: Unimplemented opcode %d", __func__, opcode);
1.1 christos 1960: }
1961:
1962: /* Check that there is no garbage at end of line. */
1963: if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
1964: fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
1965: filename, linenum, arg);
1966: }
1967: return 0;
1968: }
1969:
1970: /*
1971: * Reads the config file and modifies the options accordingly. Options
1972: * should already be initialized before this call. This never returns if
1973: * there is an error. If the file does not exist, this returns 0.
1974: */
1975: int
1.12 christos 1976: read_config_file(const char *filename, struct passwd *pw, const char *host,
1.27 christos 1977: const char *original_host, Options *options, int flags,
1978: int *want_final_pass)
1.1 christos 1979: {
1.19 christos 1980: int active = 1;
1981:
1982: return read_config_file_depth(filename, pw, host, original_host,
1.27 christos 1983: options, flags, &active, want_final_pass, 0);
1.19 christos 1984: }
1985:
1986: #define READCONF_MAX_DEPTH 16
1987: static int
1988: read_config_file_depth(const char *filename, struct passwd *pw,
1989: const char *host, const char *original_host, Options *options,
1.27 christos 1990: int flags, int *activep, int *want_final_pass, int depth)
1.19 christos 1991: {
1.1 christos 1992: FILE *f;
1.25 christos 1993: char *line = NULL;
1994: size_t linesize = 0;
1.19 christos 1995: int linenum;
1.1 christos 1996: int bad_options = 0;
1997:
1.19 christos 1998: if (depth < 0 || depth > READCONF_MAX_DEPTH)
1999: fatal("Too many recursive configuration includes");
2000:
1.1 christos 2001: if ((f = fopen(filename, "r")) == NULL)
2002: return 0;
2003:
1.9 mlelstv 2004: if (flags & SSHCONF_CHECKPERM) {
1.1 christos 2005: struct stat sb;
2006:
2007: if (fstat(fileno(f), &sb) == -1)
2008: fatal("fstat %s: %s", filename, strerror(errno));
2009: if (((sb.st_uid != 0 && sb.st_uid != getuid()) ||
2010: (sb.st_mode & 022) != 0))
2011: fatal("Bad owner or permissions on %s", filename);
2012: }
2013:
2014: debug("Reading configuration data %.200s", filename);
2015:
2016: /*
2017: * Mark that we are now processing the options. This flag is turned
2018: * on/off by Host specifications.
2019: */
2020: linenum = 0;
1.25 christos 2021: while (getline(&line, &linesize, f) != -1) {
1.1 christos 2022: /* Update line number counter. */
2023: linenum++;
1.19 christos 2024: if (process_config_line_depth(options, pw, host, original_host,
1.27 christos 2025: line, filename, linenum, activep, flags, want_final_pass,
2026: depth) != 0)
1.1 christos 2027: bad_options++;
2028: }
1.25 christos 2029: free(line);
1.1 christos 2030: fclose(f);
2031: if (bad_options > 0)
2032: fatal("%s: terminating, %d bad configuration options",
2033: filename, bad_options);
2034: return 1;
2035: }
2036:
1.12 christos 2037: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
2038: int
2039: option_clear_or_none(const char *o)
2040: {
2041: return o == NULL || strcasecmp(o, "none") == 0;
2042: }
2043:
1.1 christos 2044: /*
2045: * Initializes options to special values that indicate that they have not yet
2046: * been set. Read_config_file will only set options with this value. Options
2047: * are processed in the following order: command line, user config file,
2048: * system config file. Last, fill_default_options is called.
2049: */
2050:
2051: void
2052: initialize_options(Options * options)
2053: {
2054: memset(options, 'X', sizeof(*options));
2055: options->forward_agent = -1;
1.29 christos 2056: options->forward_agent_sock_path = NULL;
1.1 christos 2057: options->forward_x11 = -1;
2058: options->forward_x11_trusted = -1;
1.4 adam 2059: options->forward_x11_timeout = -1;
1.19 christos 2060: options->stdio_forward_host = NULL;
2061: options->stdio_forward_port = 0;
2062: options->clear_forwardings = -1;
1.1 christos 2063: options->exit_on_forward_failure = -1;
2064: options->xauth_location = NULL;
1.12 christos 2065: options->fwd_opts.gateway_ports = -1;
2066: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
2067: options->fwd_opts.streamlocal_bind_unlink = -1;
1.1 christos 2068: options->pubkey_authentication = -1;
2069: options->challenge_response_authentication = -1;
1.2 christos 2070: #if defined(KRB4) || defined(KRB5)
2071: options->kerberos_authentication = -1;
2072: #endif
2073: #if defined(AFS) || defined(KRB5)
2074: options->kerberos_tgt_passing = -1;
2075: #endif
2076: #ifdef AFS
2077: options->afs_token_passing = -1;
2078: #endif
1.1 christos 2079: options->gss_authentication = -1;
2080: options->gss_deleg_creds = -1;
2081: options->password_authentication = -1;
2082: options->kbd_interactive_authentication = -1;
2083: options->kbd_interactive_devices = NULL;
2084: options->hostbased_authentication = -1;
2085: options->batch_mode = -1;
2086: options->check_host_ip = -1;
2087: options->strict_host_key_checking = -1;
2088: options->compression = -1;
2089: options->tcp_keep_alive = -1;
2090: options->port = -1;
2091: options->address_family = -1;
2092: options->connection_attempts = -1;
2093: options->connection_timeout = -1;
2094: options->number_of_password_prompts = -1;
2095: options->ciphers = NULL;
2096: options->macs = NULL;
1.5 christos 2097: options->kex_algorithms = NULL;
1.1 christos 2098: options->hostkeyalgorithms = NULL;
1.27 christos 2099: options->ca_sign_algorithms = NULL;
1.1 christos 2100: options->num_identity_files = 0;
1.18 christos 2101: options->num_certificate_files = 0;
1.1 christos 2102: options->hostname = NULL;
2103: options->host_key_alias = NULL;
2104: options->proxy_command = NULL;
1.19 christos 2105: options->jump_user = NULL;
2106: options->jump_host = NULL;
2107: options->jump_port = -1;
2108: options->jump_extra = NULL;
1.1 christos 2109: options->user = NULL;
2110: options->escape_char = -1;
1.6 christos 2111: options->num_system_hostfiles = 0;
2112: options->num_user_hostfiles = 0;
1.4 adam 2113: options->local_forwards = NULL;
1.1 christos 2114: options->num_local_forwards = 0;
1.4 adam 2115: options->remote_forwards = NULL;
1.1 christos 2116: options->num_remote_forwards = 0;
1.22 christos 2117: options->log_facility = SYSLOG_FACILITY_NOT_SET;
1.1 christos 2118: options->log_level = SYSLOG_LEVEL_NOT_SET;
2119: options->preferred_authentications = NULL;
2120: options->bind_address = NULL;
1.23 christos 2121: options->bind_interface = NULL;
1.4 adam 2122: options->pkcs11_provider = NULL;
1.29 christos 2123: options->sk_provider = NULL;
1.1 christos 2124: options->enable_ssh_keysign = - 1;
2125: options->no_host_authentication_for_localhost = - 1;
2126: options->identities_only = - 1;
2127: options->rekey_limit = - 1;
1.11 christos 2128: options->rekey_interval = -1;
1.1 christos 2129: options->verify_host_key_dns = -1;
2130: options->server_alive_interval = -1;
2131: options->server_alive_count_max = -1;
1.25 christos 2132: options->send_env = NULL;
1.1 christos 2133: options->num_send_env = 0;
1.25 christos 2134: options->setenv = NULL;
2135: options->num_setenv = 0;
1.1 christos 2136: options->control_path = NULL;
2137: options->control_master = -1;
1.4 adam 2138: options->control_persist = -1;
2139: options->control_persist_timeout = 0;
1.1 christos 2140: options->hash_known_hosts = -1;
2141: options->tun_open = -1;
2142: options->tun_local = -1;
2143: options->tun_remote = -1;
2144: options->local_command = NULL;
2145: options->permit_local_command = -1;
1.22 christos 2146: options->remote_command = NULL;
1.18 christos 2147: options->add_keys_to_agent = -1;
1.32 ! christos 2148: options->add_keys_to_agent_lifespan = -1;
1.19 christos 2149: options->identity_agent = NULL;
1.1 christos 2150: options->visual_host_key = -1;
1.5 christos 2151: options->ip_qos_interactive = -1;
2152: options->ip_qos_bulk = -1;
1.6 christos 2153: options->request_tty = -1;
1.12 christos 2154: options->proxy_use_fdpass = -1;
1.11 christos 2155: options->ignored_unknown = NULL;
1.12 christos 2156: options->num_canonical_domains = 0;
2157: options->num_permitted_cnames = 0;
2158: options->canonicalize_max_dots = -1;
2159: options->canonicalize_fallback_local = -1;
2160: options->canonicalize_hostname = -1;
1.13 christos 2161: options->revoked_host_keys = NULL;
2162: options->fingerprint_hash = -1;
2163: options->update_hostkeys = -1;
2164: options->hostbased_key_types = NULL;
1.16 christos 2165: options->pubkey_key_types = NULL;
1.2 christos 2166: options->none_switch = -1;
2167: options->none_enabled = -1;
2168: options->hpn_disabled = -1;
2169: options->hpn_buffer_size = -1;
2170: options->tcp_rcv_buf_poll = -1;
2171: options->tcp_rcv_buf = -1;
1.7 tls 2172: options->send_version_first = -1;
1.1 christos 2173: }
2174:
2175: /*
1.12 christos 2176: * A petite version of fill_default_options() that just fills the options
2177: * needed for hostname canonicalization to proceed.
2178: */
2179: void
2180: fill_default_options_for_canonicalization(Options *options)
2181: {
2182: if (options->canonicalize_max_dots == -1)
2183: options->canonicalize_max_dots = 1;
2184: if (options->canonicalize_fallback_local == -1)
2185: options->canonicalize_fallback_local = 1;
2186: if (options->canonicalize_hostname == -1)
2187: options->canonicalize_hostname = SSH_CANONICALISE_NO;
2188: }
2189:
2190: /*
1.1 christos 2191: * Called after processing other sources of option data, this fills those
2192: * options for which no value has been specified with their default values.
2193: */
2194: void
2195: fill_default_options(Options * options)
2196: {
1.27 christos 2197: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.29 christos 2198: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.25 christos 2199: int r;
2200:
1.1 christos 2201: if (options->forward_agent == -1)
2202: options->forward_agent = 0;
2203: if (options->forward_x11 == -1)
2204: options->forward_x11 = 0;
2205: if (options->forward_x11_trusted == -1)
2206: options->forward_x11_trusted = 0;
1.4 adam 2207: if (options->forward_x11_timeout == -1)
2208: options->forward_x11_timeout = 1200;
1.19 christos 2209: /*
2210: * stdio forwarding (-W) changes the default for these but we defer
2211: * setting the values so they can be overridden.
2212: */
1.1 christos 2213: if (options->exit_on_forward_failure == -1)
1.19 christos 2214: options->exit_on_forward_failure =
2215: options->stdio_forward_host != NULL ? 1 : 0;
2216: if (options->clear_forwardings == -1)
2217: options->clear_forwardings =
2218: options->stdio_forward_host != NULL ? 1 : 0;
2219: if (options->clear_forwardings == 1)
2220: clear_forwardings(options);
2221:
1.1 christos 2222: if (options->xauth_location == NULL)
1.5 christos 2223: options->xauth_location = __UNCONST(_PATH_XAUTH);
1.12 christos 2224: if (options->fwd_opts.gateway_ports == -1)
2225: options->fwd_opts.gateway_ports = 0;
2226: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
2227: options->fwd_opts.streamlocal_bind_mask = 0177;
2228: if (options->fwd_opts.streamlocal_bind_unlink == -1)
2229: options->fwd_opts.streamlocal_bind_unlink = 0;
1.1 christos 2230: if (options->pubkey_authentication == -1)
2231: options->pubkey_authentication = 1;
2232: if (options->challenge_response_authentication == -1)
2233: options->challenge_response_authentication = 1;
1.2 christos 2234: #if defined(KRB4) || defined(KRB5)
2235: if (options->kerberos_authentication == -1)
2236: options->kerberos_authentication = 1;
2237: #endif
2238: #if defined(AFS) || defined(KRB5)
2239: if (options->kerberos_tgt_passing == -1)
2240: options->kerberos_tgt_passing = 1;
2241: #endif
2242: #ifdef AFS
2243: if (options->afs_token_passing == -1)
2244: options->afs_token_passing = 1;
2245: #endif
1.1 christos 2246: if (options->gss_authentication == -1)
2247: options->gss_authentication = 0;
2248: if (options->gss_deleg_creds == -1)
2249: options->gss_deleg_creds = 0;
2250: if (options->password_authentication == -1)
2251: options->password_authentication = 1;
2252: if (options->kbd_interactive_authentication == -1)
2253: options->kbd_interactive_authentication = 1;
2254: if (options->hostbased_authentication == -1)
2255: options->hostbased_authentication = 0;
2256: if (options->batch_mode == -1)
2257: options->batch_mode = 0;
2258: if (options->check_host_ip == -1)
2259: options->check_host_ip = 1;
2260: if (options->strict_host_key_checking == -1)
1.22 christos 2261: options->strict_host_key_checking = SSH_STRICT_HOSTKEY_ASK;
1.1 christos 2262: if (options->compression == -1)
2263: options->compression = 0;
2264: if (options->tcp_keep_alive == -1)
2265: options->tcp_keep_alive = 1;
2266: if (options->port == -1)
2267: options->port = 0; /* Filled in ssh_connect. */
2268: if (options->address_family == -1)
2269: options->address_family = AF_UNSPEC;
2270: if (options->connection_attempts == -1)
2271: options->connection_attempts = 1;
2272: if (options->number_of_password_prompts == -1)
2273: options->number_of_password_prompts = 3;
2274: /* options->hostkeyalgorithms, default set in myproposals.h */
1.32 ! christos 2275: if (options->add_keys_to_agent == -1) {
1.18 christos 2276: options->add_keys_to_agent = 0;
1.32 ! christos 2277: options->add_keys_to_agent_lifespan = 0;
! 2278: }
1.1 christos 2279: if (options->num_identity_files == 0) {
1.22 christos 2280: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_RSA, 0);
2281: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_DSA, 0);
2282: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0);
2283: add_identity_file(options, "~/",
1.29 christos 2284: _PATH_SSH_CLIENT_ID_ECDSA_SK, 0);
2285: add_identity_file(options, "~/",
1.22 christos 2286: _PATH_SSH_CLIENT_ID_ED25519, 0);
1.29 christos 2287: add_identity_file(options, "~/",
2288: _PATH_SSH_CLIENT_ID_ED25519_SK, 0);
1.23 christos 2289: add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_XMSS, 0);
1.1 christos 2290: }
2291: if (options->escape_char == -1)
2292: options->escape_char = '~';
1.6 christos 2293: if (options->num_system_hostfiles == 0) {
2294: options->system_hostfiles[options->num_system_hostfiles++] =
2295: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE);
2296: options->system_hostfiles[options->num_system_hostfiles++] =
2297: xstrdup(_PATH_SSH_SYSTEM_HOSTFILE2);
2298: }
1.29 christos 2299: if (options->update_hostkeys == -1)
2300: options->update_hostkeys = SSH_UPDATE_HOSTKEYS_NO;
1.6 christos 2301: if (options->num_user_hostfiles == 0) {
2302: options->user_hostfiles[options->num_user_hostfiles++] =
2303: xstrdup(_PATH_SSH_USER_HOSTFILE);
2304: options->user_hostfiles[options->num_user_hostfiles++] =
2305: xstrdup(_PATH_SSH_USER_HOSTFILE2);
2306: }
1.1 christos 2307: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
2308: options->log_level = SYSLOG_LEVEL_INFO;
1.22 christos 2309: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
2310: options->log_facility = SYSLOG_FACILITY_USER;
1.1 christos 2311: if (options->no_host_authentication_for_localhost == - 1)
2312: options->no_host_authentication_for_localhost = 0;
2313: if (options->identities_only == -1)
2314: options->identities_only = 0;
2315: if (options->enable_ssh_keysign == -1)
2316: options->enable_ssh_keysign = 0;
2317: if (options->rekey_limit == -1)
2318: options->rekey_limit = 0;
1.11 christos 2319: if (options->rekey_interval == -1)
2320: options->rekey_interval = 0;
1.1 christos 2321: if (options->verify_host_key_dns == -1)
2322: options->verify_host_key_dns = 0;
2323: if (options->server_alive_interval == -1)
2324: options->server_alive_interval = 0;
2325: if (options->server_alive_count_max == -1)
2326: options->server_alive_count_max = 3;
1.2 christos 2327: if (options->none_switch == -1)
2328: options->none_switch = 0;
2329: if (options->hpn_disabled == -1)
2330: options->hpn_disabled = 0;
2331: if (options->hpn_buffer_size > -1)
2332: {
2333: /* if a user tries to set the size to 0 set it to 1KB */
2334: if (options->hpn_buffer_size == 0)
2335: options->hpn_buffer_size = 1024;
2336: /*limit the buffer to 64MB*/
2337: if (options->hpn_buffer_size > 65536)
2338: {
2339: options->hpn_buffer_size = 65536*1024;
2340: debug("User requested buffer larger than 64MB. Request reverted to 64MB");
2341: }
2342: debug("hpn_buffer_size set to %d", options->hpn_buffer_size);
2343: }
2344: if (options->tcp_rcv_buf == 0)
2345: options->tcp_rcv_buf = 1;
2346: if (options->tcp_rcv_buf > -1)
2347: options->tcp_rcv_buf *=1024;
2348: if (options->tcp_rcv_buf_poll == -1)
2349: options->tcp_rcv_buf_poll = 1;
1.1 christos 2350: if (options->control_master == -1)
2351: options->control_master = 0;
1.4 adam 2352: if (options->control_persist == -1) {
2353: options->control_persist = 0;
2354: options->control_persist_timeout = 0;
2355: }
1.1 christos 2356: if (options->hash_known_hosts == -1)
2357: options->hash_known_hosts = 0;
2358: if (options->tun_open == -1)
2359: options->tun_open = SSH_TUNMODE_NO;
2360: if (options->tun_local == -1)
2361: options->tun_local = SSH_TUNID_ANY;
2362: if (options->tun_remote == -1)
2363: options->tun_remote = SSH_TUNID_ANY;
2364: if (options->permit_local_command == -1)
2365: options->permit_local_command = 0;
2366: if (options->visual_host_key == -1)
2367: options->visual_host_key = 0;
1.5 christos 2368: if (options->ip_qos_interactive == -1)
1.25 christos 2369: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.5 christos 2370: if (options->ip_qos_bulk == -1)
1.25 christos 2371: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.6 christos 2372: if (options->request_tty == -1)
2373: options->request_tty = REQUEST_TTY_AUTO;
1.12 christos 2374: if (options->proxy_use_fdpass == -1)
2375: options->proxy_use_fdpass = 0;
2376: if (options->canonicalize_max_dots == -1)
2377: options->canonicalize_max_dots = 1;
2378: if (options->canonicalize_fallback_local == -1)
2379: options->canonicalize_fallback_local = 1;
2380: if (options->canonicalize_hostname == -1)
2381: options->canonicalize_hostname = SSH_CANONICALISE_NO;
1.13 christos 2382: if (options->fingerprint_hash == -1)
2383: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.29 christos 2384: if (options->sk_provider == NULL)
2385: options->sk_provider = xstrdup("internal");
1.25 christos 2386:
2387: /* Expand KEX name lists */
2388: all_cipher = cipher_alg_list(',', 0);
2389: all_mac = mac_alg_list(',');
2390: all_kex = kex_alg_list(',');
2391: all_key = sshkey_alg_list(0, 0, 1, ',');
1.27 christos 2392: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.29 christos 2393: /* remove unsupported algos from default lists */
1.32 ! christos 2394: def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher);
! 2395: def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac);
! 2396: def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex);
! 2397: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
! 2398: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.25 christos 2399: #define ASSEMBLE(what, defaults, all) \
2400: do { \
2401: if ((r = kex_assemble_names(&options->what, \
2402: defaults, all)) != 0) \
2403: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
2404: } while (0)
1.29 christos 2405: ASSEMBLE(ciphers, def_cipher, all_cipher);
2406: ASSEMBLE(macs, def_mac, all_mac);
2407: ASSEMBLE(kex_algorithms, def_kex, all_kex);
2408: ASSEMBLE(hostbased_key_types, def_key, all_key);
2409: ASSEMBLE(pubkey_key_types, def_key, all_key);
2410: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.25 christos 2411: #undef ASSEMBLE
2412: free(all_cipher);
2413: free(all_mac);
2414: free(all_kex);
2415: free(all_key);
1.27 christos 2416: free(all_sig);
1.29 christos 2417: free(def_cipher);
2418: free(def_mac);
2419: free(def_kex);
2420: kex_default_pk_alg_filtered = def_key; /* save for later use */
2421: free(def_sig);
1.13 christos 2422:
1.7 tls 2423: if (options->send_version_first == -1)
2424: options->send_version_first = 1;
1.12 christos 2425: #define CLEAR_ON_NONE(v) \
2426: do { \
2427: if (option_clear_or_none(v)) { \
2428: free(v); \
2429: v = NULL; \
2430: } \
2431: } while(0)
2432: CLEAR_ON_NONE(options->local_command);
1.22 christos 2433: CLEAR_ON_NONE(options->remote_command);
1.12 christos 2434: CLEAR_ON_NONE(options->proxy_command);
2435: CLEAR_ON_NONE(options->control_path);
1.13 christos 2436: CLEAR_ON_NONE(options->revoked_host_keys);
1.27 christos 2437: CLEAR_ON_NONE(options->pkcs11_provider);
1.29 christos 2438: CLEAR_ON_NONE(options->sk_provider);
1.25 christos 2439: if (options->jump_host != NULL &&
2440: strcmp(options->jump_host, "none") == 0 &&
2441: options->jump_port == 0 && options->jump_user == NULL) {
2442: free(options->jump_host);
2443: options->jump_host = NULL;
2444: }
1.19 christos 2445: /* options->identity_agent distinguishes NULL from 'none' */
1.1 christos 2446: /* options->user will be set in the main program if appropriate */
2447: /* options->hostname will be set in the main program if appropriate */
2448: /* options->host_key_alias should not be set by default */
2449: /* options->preferred_authentications will be set in ssh */
2450: }
2451:
1.12 christos 2452: struct fwdarg {
2453: char *arg;
2454: int ispath;
2455: };
2456:
2457: /*
2458: * parse_fwd_field
2459: * parses the next field in a port forwarding specification.
2460: * sets fwd to the parsed field and advances p past the colon
2461: * or sets it to NULL at end of string.
2462: * returns 0 on success, else non-zero.
2463: */
2464: static int
2465: parse_fwd_field(char **p, struct fwdarg *fwd)
2466: {
2467: char *ep, *cp = *p;
2468: int ispath = 0;
2469:
2470: if (*cp == '\0') {
2471: *p = NULL;
2472: return -1; /* end of string */
2473: }
2474:
2475: /*
2476: * A field escaped with square brackets is used literally.
2477: * XXX - allow ']' to be escaped via backslash?
2478: */
2479: if (*cp == '[') {
2480: /* find matching ']' */
2481: for (ep = cp + 1; *ep != ']' && *ep != '\0'; ep++) {
2482: if (*ep == '/')
2483: ispath = 1;
2484: }
2485: /* no matching ']' or not at end of field. */
2486: if (ep[0] != ']' || (ep[1] != ':' && ep[1] != '\0'))
2487: return -1;
2488: /* NUL terminate the field and advance p past the colon */
2489: *ep++ = '\0';
2490: if (*ep != '\0')
2491: *ep++ = '\0';
2492: fwd->arg = cp + 1;
2493: fwd->ispath = ispath;
2494: *p = ep;
2495: return 0;
2496: }
2497:
2498: for (cp = *p; *cp != '\0'; cp++) {
2499: switch (*cp) {
2500: case '\\':
2501: memmove(cp, cp + 1, strlen(cp + 1) + 1);
1.14 christos 2502: if (*cp == '\0')
2503: return -1;
1.12 christos 2504: break;
2505: case '/':
2506: ispath = 1;
2507: break;
2508: case ':':
2509: *cp++ = '\0';
2510: goto done;
2511: }
2512: }
2513: done:
2514: fwd->arg = *p;
2515: fwd->ispath = ispath;
2516: *p = cp;
2517: return 0;
2518: }
2519:
1.1 christos 2520: /*
2521: * parse_forward
2522: * parses a string containing a port forwarding specification of the form:
2523: * dynamicfwd == 0
1.12 christos 2524: * [listenhost:]listenport|listenpath:connecthost:connectport|connectpath
2525: * listenpath:connectpath
1.1 christos 2526: * dynamicfwd == 1
2527: * [listenhost:]listenport
2528: * returns number of arguments parsed or zero on error
2529: */
2530: int
1.12 christos 2531: parse_forward(struct Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd)
1.1 christos 2532: {
1.12 christos 2533: struct fwdarg fwdargs[4];
2534: char *p, *cp;
1.32 ! christos 2535: int i, err;
1.1 christos 2536:
1.12 christos 2537: memset(fwd, 0, sizeof(*fwd));
2538: memset(fwdargs, 0, sizeof(fwdargs));
1.1 christos 2539:
1.32 ! christos 2540: /*
! 2541: * We expand environment variables before checking if we think they're
! 2542: * paths so that if ${VAR} expands to a fully qualified path it is
! 2543: * treated as a path.
! 2544: */
! 2545: cp = p = dollar_expand(&err, fwdspec);
! 2546: if (p == NULL || err)
! 2547: return 0;
1.1 christos 2548:
2549: /* skip leading spaces */
1.12 christos 2550: while (isspace((u_char)*cp))
1.1 christos 2551: cp++;
2552:
1.12 christos 2553: for (i = 0; i < 4; ++i) {
2554: if (parse_fwd_field(&cp, &fwdargs[i]) != 0)
1.1 christos 2555: break;
1.12 christos 2556: }
1.1 christos 2557:
2558: /* Check for trailing garbage */
1.12 christos 2559: if (cp != NULL && *cp != '\0') {
1.1 christos 2560: i = 0; /* failure */
1.12 christos 2561: }
1.1 christos 2562:
2563: switch (i) {
2564: case 1:
1.12 christos 2565: if (fwdargs[0].ispath) {
2566: fwd->listen_path = xstrdup(fwdargs[0].arg);
2567: fwd->listen_port = PORT_STREAMLOCAL;
2568: } else {
2569: fwd->listen_host = NULL;
2570: fwd->listen_port = a2port(fwdargs[0].arg);
2571: }
1.1 christos 2572: fwd->connect_host = xstrdup("socks");
2573: break;
2574:
2575: case 2:
1.12 christos 2576: if (fwdargs[0].ispath && fwdargs[1].ispath) {
2577: fwd->listen_path = xstrdup(fwdargs[0].arg);
2578: fwd->listen_port = PORT_STREAMLOCAL;
2579: fwd->connect_path = xstrdup(fwdargs[1].arg);
2580: fwd->connect_port = PORT_STREAMLOCAL;
2581: } else if (fwdargs[1].ispath) {
2582: fwd->listen_host = NULL;
2583: fwd->listen_port = a2port(fwdargs[0].arg);
2584: fwd->connect_path = xstrdup(fwdargs[1].arg);
2585: fwd->connect_port = PORT_STREAMLOCAL;
2586: } else {
2587: fwd->listen_host = xstrdup(fwdargs[0].arg);
2588: fwd->listen_port = a2port(fwdargs[1].arg);
2589: fwd->connect_host = xstrdup("socks");
2590: }
1.1 christos 2591: break;
2592:
2593: case 3:
1.12 christos 2594: if (fwdargs[0].ispath) {
2595: fwd->listen_path = xstrdup(fwdargs[0].arg);
2596: fwd->listen_port = PORT_STREAMLOCAL;
2597: fwd->connect_host = xstrdup(fwdargs[1].arg);
2598: fwd->connect_port = a2port(fwdargs[2].arg);
2599: } else if (fwdargs[2].ispath) {
2600: fwd->listen_host = xstrdup(fwdargs[0].arg);
2601: fwd->listen_port = a2port(fwdargs[1].arg);
2602: fwd->connect_path = xstrdup(fwdargs[2].arg);
2603: fwd->connect_port = PORT_STREAMLOCAL;
2604: } else {
2605: fwd->listen_host = NULL;
2606: fwd->listen_port = a2port(fwdargs[0].arg);
2607: fwd->connect_host = xstrdup(fwdargs[1].arg);
2608: fwd->connect_port = a2port(fwdargs[2].arg);
2609: }
1.1 christos 2610: break;
2611:
2612: case 4:
1.12 christos 2613: fwd->listen_host = xstrdup(fwdargs[0].arg);
2614: fwd->listen_port = a2port(fwdargs[1].arg);
2615: fwd->connect_host = xstrdup(fwdargs[2].arg);
2616: fwd->connect_port = a2port(fwdargs[3].arg);
1.1 christos 2617: break;
2618: default:
2619: i = 0; /* failure */
2620: }
2621:
1.11 christos 2622: free(p);
1.1 christos 2623:
2624: if (dynamicfwd) {
2625: if (!(i == 1 || i == 2))
2626: goto fail_free;
2627: } else {
1.12 christos 2628: if (!(i == 3 || i == 4)) {
2629: if (fwd->connect_path == NULL &&
2630: fwd->listen_path == NULL)
2631: goto fail_free;
2632: }
2633: if (fwd->connect_port <= 0 && fwd->connect_path == NULL)
1.1 christos 2634: goto fail_free;
2635: }
2636:
1.12 christos 2637: if ((fwd->listen_port < 0 && fwd->listen_path == NULL) ||
2638: (!remotefwd && fwd->listen_port == 0))
1.1 christos 2639: goto fail_free;
2640: if (fwd->connect_host != NULL &&
2641: strlen(fwd->connect_host) >= NI_MAXHOST)
2642: goto fail_free;
1.12 christos 2643: /* XXX - if connecting to a remote socket, max sun len may not match this host */
2644: if (fwd->connect_path != NULL &&
2645: strlen(fwd->connect_path) >= PATH_MAX_SUN)
2646: goto fail_free;
1.1 christos 2647: if (fwd->listen_host != NULL &&
2648: strlen(fwd->listen_host) >= NI_MAXHOST)
2649: goto fail_free;
1.12 christos 2650: if (fwd->listen_path != NULL &&
2651: strlen(fwd->listen_path) >= PATH_MAX_SUN)
2652: goto fail_free;
1.1 christos 2653:
2654: return (i);
2655:
2656: fail_free:
1.11 christos 2657: free(fwd->connect_host);
2658: fwd->connect_host = NULL;
1.12 christos 2659: free(fwd->connect_path);
2660: fwd->connect_path = NULL;
1.11 christos 2661: free(fwd->listen_host);
2662: fwd->listen_host = NULL;
1.12 christos 2663: free(fwd->listen_path);
2664: fwd->listen_path = NULL;
1.1 christos 2665: return (0);
2666: }
1.13 christos 2667:
1.19 christos 2668: int
2669: parse_jump(const char *s, Options *o, int active)
2670: {
2671: char *orig, *sdup, *cp;
2672: char *host = NULL, *user = NULL;
2673: int ret = -1, port = -1, first;
2674:
2675: active &= o->proxy_command == NULL && o->jump_host == NULL;
2676:
2677: orig = sdup = xstrdup(s);
2678: first = active;
2679: do {
1.25 christos 2680: if (strcasecmp(s, "none") == 0)
2681: break;
1.19 christos 2682: if ((cp = strrchr(sdup, ',')) == NULL)
2683: cp = sdup; /* last */
2684: else
2685: *cp++ = '\0';
2686:
2687: if (first) {
2688: /* First argument and configuration is active */
1.23 christos 2689: if (parse_ssh_uri(cp, &user, &host, &port) == -1 ||
2690: parse_user_host_port(cp, &user, &host, &port) != 0)
1.19 christos 2691: goto out;
2692: } else {
2693: /* Subsequent argument or inactive configuration */
1.23 christos 2694: if (parse_ssh_uri(cp, NULL, NULL, NULL) == -1 ||
2695: parse_user_host_port(cp, NULL, NULL, NULL) != 0)
1.19 christos 2696: goto out;
2697: }
2698: first = 0; /* only check syntax for subsequent hosts */
2699: } while (cp != sdup);
2700: /* success */
2701: if (active) {
1.25 christos 2702: if (strcasecmp(s, "none") == 0) {
2703: o->jump_host = xstrdup("none");
2704: o->jump_port = 0;
2705: } else {
2706: o->jump_user = user;
2707: o->jump_host = host;
2708: o->jump_port = port;
2709: o->proxy_command = xstrdup("none");
2710: user = host = NULL;
2711: if ((cp = strrchr(s, ',')) != NULL && cp != s) {
2712: o->jump_extra = xstrdup(s);
2713: o->jump_extra[cp - s] = '\0';
2714: }
1.19 christos 2715: }
2716: }
2717: ret = 0;
2718: out:
2719: free(orig);
2720: free(user);
2721: free(host);
2722: return ret;
2723: }
2724:
1.23 christos 2725: int
2726: parse_ssh_uri(const char *uri, char **userp, char **hostp, int *portp)
2727: {
1.24 christos 2728: const char *path;
1.23 christos 2729: int r;
2730:
2731: r = parse_uri("ssh", uri, userp, hostp, portp, &path);
2732: if (r == 0 && path != NULL)
2733: r = -1; /* path not allowed */
2734: return r;
2735: }
2736:
1.13 christos 2737: /* XXX the following is a near-vebatim copy from servconf.c; refactor */
2738: static const char *
2739: fmt_multistate_int(int val, const struct multistate *m)
2740: {
2741: u_int i;
2742:
2743: for (i = 0; m[i].key != NULL; i++) {
2744: if (m[i].value == val)
2745: return m[i].key;
2746: }
2747: return "UNKNOWN";
2748: }
2749:
2750: static const char *
2751: fmt_intarg(OpCodes code, int val)
2752: {
2753: if (val == -1)
2754: return "unset";
2755: switch (code) {
2756: case oAddressFamily:
2757: return fmt_multistate_int(val, multistate_addressfamily);
2758: case oVerifyHostKeyDNS:
2759: case oUpdateHostkeys:
2760: return fmt_multistate_int(val, multistate_yesnoask);
1.22 christos 2761: case oStrictHostKeyChecking:
2762: return fmt_multistate_int(val, multistate_strict_hostkey);
1.13 christos 2763: case oControlMaster:
2764: return fmt_multistate_int(val, multistate_controlmaster);
2765: case oTunnel:
2766: return fmt_multistate_int(val, multistate_tunnel);
2767: case oRequestTTY:
2768: return fmt_multistate_int(val, multistate_requesttty);
2769: case oCanonicalizeHostname:
2770: return fmt_multistate_int(val, multistate_canonicalizehostname);
1.25 christos 2771: case oAddKeysToAgent:
2772: return fmt_multistate_int(val, multistate_yesnoaskconfirm);
1.13 christos 2773: case oFingerprintHash:
2774: return ssh_digest_alg_name(val);
2775: default:
2776: switch (val) {
2777: case 0:
2778: return "no";
2779: case 1:
2780: return "yes";
2781: default:
2782: return "UNKNOWN";
2783: }
2784: }
2785: }
2786:
2787: static const char *
2788: lookup_opcode_name(OpCodes code)
2789: {
2790: u_int i;
2791:
2792: for (i = 0; keywords[i].name != NULL; i++)
2793: if (keywords[i].opcode == code)
2794: return(keywords[i].name);
2795: return "UNKNOWN";
2796: }
2797:
2798: static void
2799: dump_cfg_int(OpCodes code, int val)
2800: {
2801: printf("%s %d\n", lookup_opcode_name(code), val);
2802: }
2803:
2804: static void
2805: dump_cfg_fmtint(OpCodes code, int val)
2806: {
2807: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2808: }
2809:
2810: static void
2811: dump_cfg_string(OpCodes code, const char *val)
2812: {
2813: if (val == NULL)
2814: return;
2815: printf("%s %s\n", lookup_opcode_name(code), val);
2816: }
2817:
2818: static void
2819: dump_cfg_strarray(OpCodes code, u_int count, char **vals)
2820: {
2821: u_int i;
2822:
2823: for (i = 0; i < count; i++)
2824: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2825: }
2826:
2827: static void
2828: dump_cfg_strarray_oneline(OpCodes code, u_int count, char **vals)
2829: {
2830: u_int i;
2831:
2832: printf("%s", lookup_opcode_name(code));
2833: for (i = 0; i < count; i++)
2834: printf(" %s", vals[i]);
2835: printf("\n");
2836: }
2837:
2838: static void
2839: dump_cfg_forwards(OpCodes code, u_int count, const struct Forward *fwds)
2840: {
2841: const struct Forward *fwd;
2842: u_int i;
2843:
2844: /* oDynamicForward */
2845: for (i = 0; i < count; i++) {
2846: fwd = &fwds[i];
1.21 christos 2847: if (code == oDynamicForward && fwd->connect_host != NULL &&
1.13 christos 2848: strcmp(fwd->connect_host, "socks") != 0)
2849: continue;
1.21 christos 2850: if (code == oLocalForward && fwd->connect_host != NULL &&
1.13 christos 2851: strcmp(fwd->connect_host, "socks") == 0)
2852: continue;
2853: printf("%s", lookup_opcode_name(code));
2854: if (fwd->listen_port == PORT_STREAMLOCAL)
2855: printf(" %s", fwd->listen_path);
2856: else if (fwd->listen_host == NULL)
2857: printf(" %d", fwd->listen_port);
2858: else {
2859: printf(" [%s]:%d",
2860: fwd->listen_host, fwd->listen_port);
2861: }
2862: if (code != oDynamicForward) {
2863: if (fwd->connect_port == PORT_STREAMLOCAL)
2864: printf(" %s", fwd->connect_path);
2865: else if (fwd->connect_host == NULL)
2866: printf(" %d", fwd->connect_port);
2867: else {
2868: printf(" [%s]:%d",
2869: fwd->connect_host, fwd->connect_port);
2870: }
2871: }
2872: printf("\n");
2873: }
2874: }
2875:
2876: void
2877: dump_client_config(Options *o, const char *host)
2878: {
1.29 christos 2879: int i, r;
1.25 christos 2880: char buf[8], *all_key;
1.13 christos 2881:
1.29 christos 2882: /*
2883: * Expand HostKeyAlgorithms name lists. This isn't handled in
2884: * fill_default_options() like the other algorithm lists because
2885: * the host key algorithms are by default dynamically chosen based
2886: * on the host's keys found in known_hosts.
2887: */
1.25 christos 2888: all_key = sshkey_alg_list(0, 0, 1, ',');
1.29 christos 2889: if ((r = kex_assemble_names(&o->hostkeyalgorithms, kex_default_pk_alg(),
2890: all_key)) != 0)
2891: fatal("%s: expand HostKeyAlgorithms: %s", __func__, ssh_err(r));
1.25 christos 2892: free(all_key);
1.18 christos 2893:
1.13 christos 2894: /* Most interesting options first: user, host, port */
2895: dump_cfg_string(oUser, o->user);
1.28 christos 2896: dump_cfg_string(oHostname, host);
1.13 christos 2897: dump_cfg_int(oPort, o->port);
2898:
2899: /* Flag options */
2900: dump_cfg_fmtint(oAddressFamily, o->address_family);
2901: dump_cfg_fmtint(oBatchMode, o->batch_mode);
2902: dump_cfg_fmtint(oCanonicalizeFallbackLocal, o->canonicalize_fallback_local);
2903: dump_cfg_fmtint(oCanonicalizeHostname, o->canonicalize_hostname);
2904: dump_cfg_fmtint(oChallengeResponseAuthentication, o->challenge_response_authentication);
2905: dump_cfg_fmtint(oCheckHostIP, o->check_host_ip);
2906: dump_cfg_fmtint(oCompression, o->compression);
2907: dump_cfg_fmtint(oControlMaster, o->control_master);
2908: dump_cfg_fmtint(oEnableSSHKeysign, o->enable_ssh_keysign);
1.19 christos 2909: dump_cfg_fmtint(oClearAllForwardings, o->clear_forwardings);
1.13 christos 2910: dump_cfg_fmtint(oExitOnForwardFailure, o->exit_on_forward_failure);
2911: dump_cfg_fmtint(oFingerprintHash, o->fingerprint_hash);
2912: dump_cfg_fmtint(oForwardX11, o->forward_x11);
2913: dump_cfg_fmtint(oForwardX11Trusted, o->forward_x11_trusted);
2914: dump_cfg_fmtint(oGatewayPorts, o->fwd_opts.gateway_ports);
2915: #ifdef GSSAPI
2916: dump_cfg_fmtint(oGssAuthentication, o->gss_authentication);
2917: dump_cfg_fmtint(oGssDelegateCreds, o->gss_deleg_creds);
2918: #endif /* GSSAPI */
2919: dump_cfg_fmtint(oHashKnownHosts, o->hash_known_hosts);
2920: dump_cfg_fmtint(oHostbasedAuthentication, o->hostbased_authentication);
2921: dump_cfg_fmtint(oIdentitiesOnly, o->identities_only);
2922: dump_cfg_fmtint(oKbdInteractiveAuthentication, o->kbd_interactive_authentication);
2923: dump_cfg_fmtint(oNoHostAuthenticationForLocalhost, o->no_host_authentication_for_localhost);
2924: dump_cfg_fmtint(oPasswordAuthentication, o->password_authentication);
2925: dump_cfg_fmtint(oPermitLocalCommand, o->permit_local_command);
2926: dump_cfg_fmtint(oProxyUseFdpass, o->proxy_use_fdpass);
2927: dump_cfg_fmtint(oPubkeyAuthentication, o->pubkey_authentication);
2928: dump_cfg_fmtint(oRequestTTY, o->request_tty);
2929: dump_cfg_fmtint(oStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
2930: dump_cfg_fmtint(oStrictHostKeyChecking, o->strict_host_key_checking);
2931: dump_cfg_fmtint(oTCPKeepAlive, o->tcp_keep_alive);
2932: dump_cfg_fmtint(oTunnel, o->tun_open);
2933: dump_cfg_fmtint(oVerifyHostKeyDNS, o->verify_host_key_dns);
2934: dump_cfg_fmtint(oVisualHostKey, o->visual_host_key);
2935: dump_cfg_fmtint(oUpdateHostkeys, o->update_hostkeys);
2936:
2937: /* Integer options */
2938: dump_cfg_int(oCanonicalizeMaxDots, o->canonicalize_max_dots);
2939: dump_cfg_int(oConnectionAttempts, o->connection_attempts);
2940: dump_cfg_int(oForwardX11Timeout, o->forward_x11_timeout);
2941: dump_cfg_int(oNumberOfPasswordPrompts, o->number_of_password_prompts);
2942: dump_cfg_int(oServerAliveCountMax, o->server_alive_count_max);
2943: dump_cfg_int(oServerAliveInterval, o->server_alive_interval);
2944:
2945: /* String options */
2946: dump_cfg_string(oBindAddress, o->bind_address);
1.23 christos 2947: dump_cfg_string(oBindInterface, o->bind_interface);
1.29 christos 2948: dump_cfg_string(oCiphers, o->ciphers);
1.13 christos 2949: dump_cfg_string(oControlPath, o->control_path);
1.18 christos 2950: dump_cfg_string(oHostKeyAlgorithms, o->hostkeyalgorithms);
1.13 christos 2951: dump_cfg_string(oHostKeyAlias, o->host_key_alias);
2952: dump_cfg_string(oHostbasedKeyTypes, o->hostbased_key_types);
1.19 christos 2953: dump_cfg_string(oIdentityAgent, o->identity_agent);
1.25 christos 2954: dump_cfg_string(oIgnoreUnknown, o->ignored_unknown);
1.13 christos 2955: dump_cfg_string(oKbdInteractiveDevices, o->kbd_interactive_devices);
1.29 christos 2956: dump_cfg_string(oKexAlgorithms, o->kex_algorithms);
2957: dump_cfg_string(oCASignatureAlgorithms, o->ca_sign_algorithms);
1.13 christos 2958: dump_cfg_string(oLocalCommand, o->local_command);
1.22 christos 2959: dump_cfg_string(oRemoteCommand, o->remote_command);
1.13 christos 2960: dump_cfg_string(oLogLevel, log_level_name(o->log_level));
1.29 christos 2961: dump_cfg_string(oMacs, o->macs);
1.21 christos 2962: #ifdef ENABLE_PKCS11
1.13 christos 2963: dump_cfg_string(oPKCS11Provider, o->pkcs11_provider);
1.21 christos 2964: #endif
1.29 christos 2965: dump_cfg_string(oSecurityKeyProvider, o->sk_provider);
1.13 christos 2966: dump_cfg_string(oPreferredAuthentications, o->preferred_authentications);
1.18 christos 2967: dump_cfg_string(oPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.13 christos 2968: dump_cfg_string(oRevokedHostKeys, o->revoked_host_keys);
2969: dump_cfg_string(oXAuthLocation, o->xauth_location);
2970:
2971: /* Forwards */
2972: dump_cfg_forwards(oDynamicForward, o->num_local_forwards, o->local_forwards);
2973: dump_cfg_forwards(oLocalForward, o->num_local_forwards, o->local_forwards);
2974: dump_cfg_forwards(oRemoteForward, o->num_remote_forwards, o->remote_forwards);
2975:
2976: /* String array options */
2977: dump_cfg_strarray(oIdentityFile, o->num_identity_files, o->identity_files);
2978: dump_cfg_strarray_oneline(oCanonicalDomains, o->num_canonical_domains, o->canonical_domains);
1.25 christos 2979: dump_cfg_strarray(oCertificateFile, o->num_certificate_files, o->certificate_files);
1.13 christos 2980: dump_cfg_strarray_oneline(oGlobalKnownHostsFile, o->num_system_hostfiles, o->system_hostfiles);
2981: dump_cfg_strarray_oneline(oUserKnownHostsFile, o->num_user_hostfiles, o->user_hostfiles);
2982: dump_cfg_strarray(oSendEnv, o->num_send_env, o->send_env);
1.25 christos 2983: dump_cfg_strarray(oSetEnv, o->num_setenv, o->setenv);
1.13 christos 2984:
2985: /* Special cases */
2986:
1.32 ! christos 2987: /* AddKeysToAgent */
! 2988: if (o->add_keys_to_agent_lifespan <= 0)
! 2989: dump_cfg_fmtint(oAddKeysToAgent, o->add_keys_to_agent);
! 2990: else {
! 2991: printf("addkeystoagent%s %d\n",
! 2992: o->add_keys_to_agent == 3 ? " confirm" : "",
! 2993: o->add_keys_to_agent_lifespan);
! 2994: }
! 2995:
1.29 christos 2996: /* oForwardAgent */
2997: if (o->forward_agent_sock_path == NULL)
2998: dump_cfg_fmtint(oForwardAgent, o->forward_agent);
2999: else
3000: dump_cfg_string(oForwardAgent, o->forward_agent_sock_path);
3001:
1.13 christos 3002: /* oConnectTimeout */
3003: if (o->connection_timeout == -1)
3004: printf("connecttimeout none\n");
3005: else
3006: dump_cfg_int(oConnectTimeout, o->connection_timeout);
3007:
3008: /* oTunnelDevice */
3009: printf("tunneldevice");
3010: if (o->tun_local == SSH_TUNID_ANY)
3011: printf(" any");
3012: else
3013: printf(" %d", o->tun_local);
3014: if (o->tun_remote == SSH_TUNID_ANY)
3015: printf(":any");
3016: else
3017: printf(":%d", o->tun_remote);
3018: printf("\n");
3019:
3020: /* oCanonicalizePermittedCNAMEs */
3021: if ( o->num_permitted_cnames > 0) {
3022: printf("canonicalizePermittedcnames");
3023: for (i = 0; i < o->num_permitted_cnames; i++) {
3024: printf(" %s:%s", o->permitted_cnames[i].source_list,
3025: o->permitted_cnames[i].target_list);
3026: }
3027: printf("\n");
3028: }
3029:
3030: /* oControlPersist */
3031: if (o->control_persist == 0 || o->control_persist_timeout == 0)
3032: dump_cfg_fmtint(oControlPersist, o->control_persist);
3033: else
3034: dump_cfg_int(oControlPersist, o->control_persist_timeout);
3035:
3036: /* oEscapeChar */
3037: if (o->escape_char == SSH_ESCAPECHAR_NONE)
3038: printf("escapechar none\n");
3039: else {
1.19 christos 3040: vis(buf, o->escape_char, VIS_WHITE, 0);
3041: printf("escapechar %s\n", buf);
1.13 christos 3042: }
3043:
3044: /* oIPQoS */
3045: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
3046: printf("%s\n", iptos2str(o->ip_qos_bulk));
3047:
3048: /* oRekeyLimit */
1.18 christos 3049: printf("rekeylimit %llu %d\n",
3050: (unsigned long long)o->rekey_limit, o->rekey_interval);
1.13 christos 3051:
3052: /* oStreamLocalBindMask */
3053: printf("streamlocalbindmask 0%o\n",
3054: o->fwd_opts.streamlocal_bind_mask);
1.19 christos 3055:
1.25 christos 3056: /* oLogFacility */
3057: printf("syslogfacility %s\n", log_facility_name(o->log_facility));
3058:
1.19 christos 3059: /* oProxyCommand / oProxyJump */
3060: if (o->jump_host == NULL)
3061: dump_cfg_string(oProxyCommand, o->proxy_command);
3062: else {
3063: /* Check for numeric addresses */
3064: i = strchr(o->jump_host, ':') != NULL ||
3065: strspn(o->jump_host, "1234567890.") == strlen(o->jump_host);
3066: snprintf(buf, sizeof(buf), "%d", o->jump_port);
3067: printf("proxyjump %s%s%s%s%s%s%s%s%s\n",
3068: /* optional additional jump spec */
3069: o->jump_extra == NULL ? "" : o->jump_extra,
3070: o->jump_extra == NULL ? "" : ",",
3071: /* optional user */
3072: o->jump_user == NULL ? "" : o->jump_user,
3073: o->jump_user == NULL ? "" : "@",
3074: /* opening [ if hostname is numeric */
3075: i ? "[" : "",
3076: /* mandatory hostname */
3077: o->jump_host,
3078: /* closing ] if hostname is numeric */
3079: i ? "]" : "",
3080: /* optional port number */
3081: o->jump_port <= 0 ? "" : ":",
3082: o->jump_port <= 0 ? "" : buf);
3083: }
1.13 christos 3084: }
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