Annotation of src/usr.bin/ssh/servconf.c, Revision 1.185
1.185 ! djm 1: /* $OpenBSD: servconf.c,v 1.184 2008/06/15 16:58:40 dtucker Exp $ */
1.1 deraadt 2: /*
1.26 deraadt 3: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4: * All rights reserved
1.34 markus 5: *
1.51 deraadt 6: * As far as I am concerned, the code I have written for this software
7: * can be used freely for any purpose. Any derived versions of this
8: * software must be clearly marked as such, and if the derived work is
9: * incompatible with the protocol description in the RFC file, it must be
10: * called by a name other than "ssh" or "Secure Shell".
1.26 deraadt 11: */
1.1 deraadt 12:
1.152 stevesk 13: #include <sys/types.h>
14: #include <sys/socket.h>
1.179 djm 15: #include <sys/queue.h>
1.154 stevesk 16:
17: #include <netdb.h>
1.165 dtucker 18: #include <pwd.h>
1.162 stevesk 19: #include <stdio.h>
1.161 stevesk 20: #include <stdlib.h>
1.160 stevesk 21: #include <string.h>
1.164 deraadt 22: #include <signal.h>
1.155 stevesk 23: #include <unistd.h>
1.164 deraadt 24: #include <stdarg.h>
1.182 dtucker 25: #include <errno.h>
1.1 deraadt 26:
1.164 deraadt 27: #include "xmalloc.h"
1.1 deraadt 28: #include "ssh.h"
1.62 markus 29: #include "log.h"
1.164 deraadt 30: #include "buffer.h"
1.1 deraadt 31: #include "servconf.h"
1.33 markus 32: #include "compat.h"
1.60 markus 33: #include "pathnames.h"
1.62 markus 34: #include "misc.h"
35: #include "cipher.h"
1.164 deraadt 36: #include "key.h"
1.66 markus 37: #include "kex.h"
38: #include "mac.h"
1.153 dtucker 39: #include "match.h"
1.156 dtucker 40: #include "channels.h"
1.165 dtucker 41: #include "groupaccess.h"
1.1 deraadt 42:
1.84 itojun 43: static void add_listen_addr(ServerOptions *, char *, u_short);
44: static void add_one_listen_addr(ServerOptions *, char *, u_short);
1.29 markus 45:
1.102 provos 46: /* Use of privilege separation or not */
47: extern int use_privsep;
1.153 dtucker 48: extern Buffer cfg;
1.62 markus 49:
1.1 deraadt 50: /* Initializes the server options to their default values. */
51:
1.34 markus 52: void
1.25 markus 53: initialize_server_options(ServerOptions *options)
1.1 deraadt 54: {
1.25 markus 55: memset(options, 0, sizeof(*options));
1.29 markus 56: options->num_ports = 0;
57: options->ports_from_cmdline = 0;
58: options->listen_addrs = NULL;
1.138 djm 59: options->address_family = -1;
1.54 markus 60: options->num_host_key_files = 0;
1.36 markus 61: options->pid_file = NULL;
1.25 markus 62: options->server_key_bits = -1;
63: options->login_grace_time = -1;
64: options->key_regeneration_time = -1;
1.67 markus 65: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 66: options->ignore_rhosts = -1;
67: options->ignore_user_known_hosts = -1;
68: options->print_motd = -1;
1.72 stevesk 69: options->print_lastlog = -1;
1.25 markus 70: options->x11_forwarding = -1;
71: options->x11_display_offset = -1;
1.99 stevesk 72: options->x11_use_localhost = -1;
1.42 markus 73: options->xauth_location = NULL;
1.25 markus 74: options->strict_modes = -1;
1.129 markus 75: options->tcp_keep_alive = -1;
1.101 markus 76: options->log_facility = SYSLOG_FACILITY_NOT_SET;
77: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.25 markus 78: options->rhosts_rsa_authentication = -1;
1.75 markus 79: options->hostbased_authentication = -1;
80: options->hostbased_uses_name_from_packet_only = -1;
1.25 markus 81: options->rsa_authentication = -1;
1.54 markus 82: options->pubkey_authentication = -1;
1.25 markus 83: options->kerberos_authentication = -1;
84: options->kerberos_or_local_passwd = -1;
85: options->kerberos_ticket_cleanup = -1;
1.130 jakob 86: options->kerberos_get_afs_token = -1;
1.125 markus 87: options->gss_authentication=-1;
88: options->gss_cleanup_creds = -1;
1.25 markus 89: options->password_authentication = -1;
1.52 markus 90: options->kbd_interactive_authentication = -1;
1.80 markus 91: options->challenge_response_authentication = -1;
1.25 markus 92: options->permit_empty_passwd = -1;
1.113 markus 93: options->permit_user_env = -1;
1.25 markus 94: options->use_login = -1;
1.111 markus 95: options->compression = -1;
1.53 markus 96: options->allow_tcp_forwarding = -1;
1.178 pyr 97: options->allow_agent_forwarding = -1;
1.25 markus 98: options->num_allow_users = 0;
99: options->num_deny_users = 0;
100: options->num_allow_groups = 0;
101: options->num_deny_groups = 0;
1.33 markus 102: options->ciphers = NULL;
1.66 markus 103: options->macs = NULL;
1.33 markus 104: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 105: options->gateway_ports = -1;
1.43 jakob 106: options->num_subsystems = 0;
1.50 markus 107: options->max_startups_begin = -1;
108: options->max_startups_rate = -1;
1.46 markus 109: options->max_startups = -1;
1.133 dtucker 110: options->max_authtries = -1;
1.180 djm 111: options->max_sessions = -1;
1.57 markus 112: options->banner = NULL;
1.122 markus 113: options->use_dns = -1;
1.77 beck 114: options->client_alive_interval = -1;
115: options->client_alive_count_max = -1;
1.82 markus 116: options->authorized_keys_file = NULL;
117: options->authorized_keys_file2 = NULL;
1.131 djm 118: options->num_accept_env = 0;
1.145 reyk 119: options->permit_tun = -1;
1.159 dtucker 120: options->num_permitted_opens = -1;
1.158 dtucker 121: options->adm_forced_command = NULL;
1.176 djm 122: options->chroot_directory = NULL;
1.1 deraadt 123: }
124:
1.34 markus 125: void
1.25 markus 126: fill_default_server_options(ServerOptions *options)
1.1 deraadt 127: {
1.54 markus 128: if (options->protocol == SSH_PROTO_UNKNOWN)
129: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
130: if (options->num_host_key_files == 0) {
131: /* fill default hostkeys for protocols */
132: if (options->protocol & SSH_PROTO_1)
1.97 stevesk 133: options->host_key_files[options->num_host_key_files++] =
134: _PATH_HOST_KEY_FILE;
135: if (options->protocol & SSH_PROTO_2) {
136: options->host_key_files[options->num_host_key_files++] =
137: _PATH_HOST_RSA_KEY_FILE;
138: options->host_key_files[options->num_host_key_files++] =
139: _PATH_HOST_DSA_KEY_FILE;
140: }
1.54 markus 141: }
1.29 markus 142: if (options->num_ports == 0)
143: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
144: if (options->listen_addrs == NULL)
1.76 stevesk 145: add_listen_addr(options, NULL, 0);
1.36 markus 146: if (options->pid_file == NULL)
1.60 markus 147: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 148: if (options->server_key_bits == -1)
1.185 ! djm 149: options->server_key_bits = 1024;
1.25 markus 150: if (options->login_grace_time == -1)
1.115 stevesk 151: options->login_grace_time = 120;
1.25 markus 152: if (options->key_regeneration_time == -1)
153: options->key_regeneration_time = 3600;
1.67 markus 154: if (options->permit_root_login == PERMIT_NOT_SET)
155: options->permit_root_login = PERMIT_YES;
1.25 markus 156: if (options->ignore_rhosts == -1)
1.30 markus 157: options->ignore_rhosts = 1;
1.25 markus 158: if (options->ignore_user_known_hosts == -1)
159: options->ignore_user_known_hosts = 0;
160: if (options->print_motd == -1)
161: options->print_motd = 1;
1.72 stevesk 162: if (options->print_lastlog == -1)
163: options->print_lastlog = 1;
1.25 markus 164: if (options->x11_forwarding == -1)
1.30 markus 165: options->x11_forwarding = 0;
1.25 markus 166: if (options->x11_display_offset == -1)
1.30 markus 167: options->x11_display_offset = 10;
1.99 stevesk 168: if (options->x11_use_localhost == -1)
169: options->x11_use_localhost = 1;
1.42 markus 170: if (options->xauth_location == NULL)
1.83 markus 171: options->xauth_location = _PATH_XAUTH;
1.25 markus 172: if (options->strict_modes == -1)
173: options->strict_modes = 1;
1.129 markus 174: if (options->tcp_keep_alive == -1)
175: options->tcp_keep_alive = 1;
1.101 markus 176: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
1.25 markus 177: options->log_facility = SYSLOG_FACILITY_AUTH;
1.101 markus 178: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.58 markus 179: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 180: if (options->rhosts_rsa_authentication == -1)
1.30 markus 181: options->rhosts_rsa_authentication = 0;
1.75 markus 182: if (options->hostbased_authentication == -1)
183: options->hostbased_authentication = 0;
184: if (options->hostbased_uses_name_from_packet_only == -1)
185: options->hostbased_uses_name_from_packet_only = 0;
1.25 markus 186: if (options->rsa_authentication == -1)
187: options->rsa_authentication = 1;
1.54 markus 188: if (options->pubkey_authentication == -1)
189: options->pubkey_authentication = 1;
1.25 markus 190: if (options->kerberos_authentication == -1)
1.107 markus 191: options->kerberos_authentication = 0;
1.25 markus 192: if (options->kerberos_or_local_passwd == -1)
193: options->kerberos_or_local_passwd = 1;
194: if (options->kerberos_ticket_cleanup == -1)
195: options->kerberos_ticket_cleanup = 1;
1.130 jakob 196: if (options->kerberos_get_afs_token == -1)
197: options->kerberos_get_afs_token = 0;
1.125 markus 198: if (options->gss_authentication == -1)
199: options->gss_authentication = 0;
200: if (options->gss_cleanup_creds == -1)
201: options->gss_cleanup_creds = 1;
1.25 markus 202: if (options->password_authentication == -1)
203: options->password_authentication = 1;
1.52 markus 204: if (options->kbd_interactive_authentication == -1)
205: options->kbd_interactive_authentication = 0;
1.80 markus 206: if (options->challenge_response_authentication == -1)
207: options->challenge_response_authentication = 1;
1.25 markus 208: if (options->permit_empty_passwd == -1)
1.30 markus 209: options->permit_empty_passwd = 0;
1.113 markus 210: if (options->permit_user_env == -1)
211: options->permit_user_env = 0;
1.25 markus 212: if (options->use_login == -1)
213: options->use_login = 0;
1.111 markus 214: if (options->compression == -1)
1.143 markus 215: options->compression = COMP_DELAYED;
1.53 markus 216: if (options->allow_tcp_forwarding == -1)
217: options->allow_tcp_forwarding = 1;
1.178 pyr 218: if (options->allow_agent_forwarding == -1)
219: options->allow_agent_forwarding = 1;
1.38 markus 220: if (options->gateway_ports == -1)
221: options->gateway_ports = 0;
1.46 markus 222: if (options->max_startups == -1)
223: options->max_startups = 10;
1.50 markus 224: if (options->max_startups_rate == -1)
225: options->max_startups_rate = 100; /* 100% */
226: if (options->max_startups_begin == -1)
227: options->max_startups_begin = options->max_startups;
1.133 dtucker 228: if (options->max_authtries == -1)
229: options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
1.180 djm 230: if (options->max_sessions == -1)
231: options->max_sessions = DEFAULT_SESSIONS_MAX;
1.122 markus 232: if (options->use_dns == -1)
233: options->use_dns = 1;
1.77 beck 234: if (options->client_alive_interval == -1)
1.95 deraadt 235: options->client_alive_interval = 0;
1.77 beck 236: if (options->client_alive_count_max == -1)
237: options->client_alive_count_max = 3;
1.90 markus 238: if (options->authorized_keys_file2 == NULL) {
239: /* authorized_keys_file2 falls back to authorized_keys_file */
240: if (options->authorized_keys_file != NULL)
241: options->authorized_keys_file2 = options->authorized_keys_file;
242: else
243: options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2;
244: }
245: if (options->authorized_keys_file == NULL)
246: options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS;
1.145 reyk 247: if (options->permit_tun == -1)
1.146 reyk 248: options->permit_tun = SSH_TUNMODE_NO;
1.102 provos 249:
1.110 markus 250: /* Turn privilege separation on by default */
1.102 provos 251: if (use_privsep == -1)
1.110 markus 252: use_privsep = 1;
1.1 deraadt 253: }
254:
255: /* Keyword tokens. */
1.25 markus 256: typedef enum {
257: sBadOption, /* == unknown option */
258: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
259: sPermitRootLogin, sLogFacility, sLogLevel,
1.124 markus 260: sRhostsRSAAuthentication, sRSAAuthentication,
1.25 markus 261: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.130 jakob 262: sKerberosGetAFSToken,
1.123 markus 263: sKerberosTgtPassing, sChallengeResponseAuthentication,
1.138 djm 264: sPasswordAuthentication, sKbdInteractiveAuthentication,
265: sListenAddress, sAddressFamily,
1.72 stevesk 266: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
1.99 stevesk 267: sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
1.129 markus 268: sStrictModes, sEmptyPasswd, sTCPKeepAlive,
1.113 markus 269: sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression,
1.53 markus 270: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 271: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.133 dtucker 272: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem,
1.180 djm 273: sMaxStartups, sMaxAuthTries, sMaxSessions,
1.122 markus 274: sBanner, sUseDNS, sHostbasedAuthentication,
1.95 deraadt 275: sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
1.89 jakob 276: sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2,
1.145 reyk 277: sGssAuthentication, sGssCleanupCreds, sAcceptEnv, sPermitTunnel,
1.176 djm 278: sMatch, sPermitOpen, sForceCommand, sChrootDirectory,
1.178 pyr 279: sUsePrivilegeSeparation, sAllowAgentForwarding,
1.121 jakob 280: sDeprecated, sUnsupported
1.1 deraadt 281: } ServerOpCodes;
282:
1.153 dtucker 283: #define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */
284: #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
285: #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
286:
1.1 deraadt 287: /* Textual representation of the tokens. */
1.25 markus 288: static struct {
289: const char *name;
290: ServerOpCodes opcode;
1.153 dtucker 291: u_int flags;
1.25 markus 292: } keywords[] = {
1.153 dtucker 293: { "port", sPort, SSHCFG_GLOBAL },
294: { "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
295: { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
296: { "pidfile", sPidFile, SSHCFG_GLOBAL },
297: { "serverkeybits", sServerKeyBits, SSHCFG_GLOBAL },
298: { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
299: { "keyregenerationinterval", sKeyRegenerationTime, SSHCFG_GLOBAL },
1.175 dtucker 300: { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
1.153 dtucker 301: { "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
302: { "loglevel", sLogLevel, SSHCFG_GLOBAL },
303: { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
1.168 dtucker 304: { "rhostsrsaauthentication", sRhostsRSAAuthentication, SSHCFG_ALL },
305: { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
1.153 dtucker 306: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_GLOBAL },
1.168 dtucker 307: { "rsaauthentication", sRSAAuthentication, SSHCFG_ALL },
308: { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
1.153 dtucker 309: { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
1.123 markus 310: #ifdef KRB5
1.168 dtucker 311: { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
1.153 dtucker 312: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
313: { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
314: { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
1.121 jakob 315: #else
1.168 dtucker 316: { "kerberosauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 317: { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
318: { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
319: { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
1.126 markus 320: #endif
1.153 dtucker 321: { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
322: { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 323: #ifdef GSSAPI
1.168 dtucker 324: { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
1.153 dtucker 325: { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
1.125 markus 326: #else
1.168 dtucker 327: { "gssapiauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 328: { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 329: #endif
1.168 dtucker 330: { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
331: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
1.170 dtucker 332: { "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
1.153 dtucker 333: { "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */
334: { "checkmail", sDeprecated, SSHCFG_GLOBAL },
335: { "listenaddress", sListenAddress, SSHCFG_GLOBAL },
336: { "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
337: { "printmotd", sPrintMotd, SSHCFG_GLOBAL },
338: { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
339: { "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL },
340: { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
1.157 dtucker 341: { "x11forwarding", sX11Forwarding, SSHCFG_ALL },
342: { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
343: { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
1.153 dtucker 344: { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
345: { "strictmodes", sStrictModes, SSHCFG_GLOBAL },
346: { "permitemptypasswords", sEmptyPasswd, SSHCFG_GLOBAL },
347: { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
348: { "uselogin", sUseLogin, SSHCFG_GLOBAL },
349: { "compression", sCompression, SSHCFG_GLOBAL },
350: { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
351: { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
352: { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
1.178 pyr 353: { "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
1.153 dtucker 354: { "allowusers", sAllowUsers, SSHCFG_GLOBAL },
355: { "denyusers", sDenyUsers, SSHCFG_GLOBAL },
356: { "allowgroups", sAllowGroups, SSHCFG_GLOBAL },
357: { "denygroups", sDenyGroups, SSHCFG_GLOBAL },
358: { "ciphers", sCiphers, SSHCFG_GLOBAL },
359: { "macs", sMacs, SSHCFG_GLOBAL },
360: { "protocol", sProtocol, SSHCFG_GLOBAL },
361: { "gatewayports", sGatewayPorts, SSHCFG_ALL },
362: { "subsystem", sSubsystem, SSHCFG_GLOBAL },
363: { "maxstartups", sMaxStartups, SSHCFG_GLOBAL },
1.184 dtucker 364: { "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
1.180 djm 365: { "maxsessions", sMaxSessions, SSHCFG_ALL },
1.168 dtucker 366: { "banner", sBanner, SSHCFG_ALL },
1.153 dtucker 367: { "usedns", sUseDNS, SSHCFG_GLOBAL },
368: { "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
369: { "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
370: { "clientaliveinterval", sClientAliveInterval, SSHCFG_GLOBAL },
371: { "clientalivecountmax", sClientAliveCountMax, SSHCFG_GLOBAL },
372: { "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_GLOBAL },
373: { "authorizedkeysfile2", sAuthorizedKeysFile2, SSHCFG_GLOBAL },
374: { "useprivilegeseparation", sUsePrivilegeSeparation, SSHCFG_GLOBAL},
375: { "acceptenv", sAcceptEnv, SSHCFG_GLOBAL },
376: { "permittunnel", sPermitTunnel, SSHCFG_GLOBAL },
377: { "match", sMatch, SSHCFG_ALL },
1.156 dtucker 378: { "permitopen", sPermitOpen, SSHCFG_ALL },
1.158 dtucker 379: { "forcecommand", sForceCommand, SSHCFG_ALL },
1.176 djm 380: { "chrootdirectory", sChrootDirectory, SSHCFG_ALL },
1.153 dtucker 381: { NULL, sBadOption, 0 }
1.1 deraadt 382: };
383:
1.182 dtucker 384: static struct {
385: int val;
386: char *text;
387: } tunmode_desc[] = {
388: { SSH_TUNMODE_NO, "no" },
389: { SSH_TUNMODE_POINTOPOINT, "point-to-point" },
390: { SSH_TUNMODE_ETHERNET, "ethernet" },
391: { SSH_TUNMODE_YES, "yes" },
392: { -1, NULL }
393: };
394:
1.27 markus 395: /*
1.73 stevesk 396: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 397: */
1.1 deraadt 398:
1.34 markus 399: static ServerOpCodes
1.25 markus 400: parse_token(const char *cp, const char *filename,
1.153 dtucker 401: int linenum, u_int *flags)
1.1 deraadt 402: {
1.55 markus 403: u_int i;
1.1 deraadt 404:
1.25 markus 405: for (i = 0; keywords[i].name; i++)
1.153 dtucker 406: if (strcasecmp(cp, keywords[i].name) == 0) {
407: *flags = keywords[i].flags;
1.25 markus 408: return keywords[i].opcode;
1.153 dtucker 409: }
1.25 markus 410:
1.78 stevesk 411: error("%s: line %d: Bad configuration option: %s",
412: filename, linenum, cp);
1.25 markus 413: return sBadOption;
1.1 deraadt 414: }
415:
1.84 itojun 416: static void
1.76 stevesk 417: add_listen_addr(ServerOptions *options, char *addr, u_short port)
1.74 stevesk 418: {
1.142 djm 419: u_int i;
1.74 stevesk 420:
421: if (options->num_ports == 0)
422: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.138 djm 423: if (options->address_family == -1)
424: options->address_family = AF_UNSPEC;
1.76 stevesk 425: if (port == 0)
1.74 stevesk 426: for (i = 0; i < options->num_ports; i++)
427: add_one_listen_addr(options, addr, options->ports[i]);
428: else
1.76 stevesk 429: add_one_listen_addr(options, addr, port);
1.74 stevesk 430: }
431:
1.84 itojun 432: static void
1.74 stevesk 433: add_one_listen_addr(ServerOptions *options, char *addr, u_short port)
1.29 markus 434: {
435: struct addrinfo hints, *ai, *aitop;
436: char strport[NI_MAXSERV];
437: int gaierr;
438:
1.74 stevesk 439: memset(&hints, 0, sizeof(hints));
1.138 djm 440: hints.ai_family = options->address_family;
1.74 stevesk 441: hints.ai_socktype = SOCK_STREAM;
442: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
1.112 deraadt 443: snprintf(strport, sizeof strport, "%u", port);
1.74 stevesk 444: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
445: fatal("bad addr or host: %s (%s)",
446: addr ? addr : "<NULL>",
1.173 dtucker 447: ssh_gai_strerror(gaierr));
1.74 stevesk 448: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
449: ;
450: ai->ai_next = options->listen_addrs;
451: options->listen_addrs = aitop;
1.29 markus 452: }
453:
1.153 dtucker 454: /*
455: * The strategy for the Match blocks is that the config file is parsed twice.
456: *
457: * The first time is at startup. activep is initialized to 1 and the
458: * directives in the global context are processed and acted on. Hitting a
459: * Match directive unsets activep and the directives inside the block are
460: * checked for syntax only.
461: *
462: * The second time is after a connection has been established but before
463: * authentication. activep is initialized to 2 and global config directives
464: * are ignored since they have already been processed. If the criteria in a
465: * Match block is met, activep is set and the subsequent directives
466: * processed and actioned until EOF or another Match block unsets it. Any
467: * options set are copied into the main server config.
468: *
469: * Potential additions/improvements:
470: * - Add Match support for pre-kex directives, eg Protocol, Ciphers.
471: *
472: * - Add a Tag directive (idea from David Leonard) ala pf, eg:
473: * Match Address 192.168.0.*
474: * Tag trusted
475: * Match Group wheel
476: * Tag trusted
477: * Match Tag trusted
478: * AllowTcpForwarding yes
479: * GatewayPorts clientspecified
480: * [...]
481: *
482: * - Add a PermittedChannelRequests directive
483: * Match Group shell
484: * PermittedChannelRequests session,forwarded-tcpip
485: */
486:
487: static int
1.165 dtucker 488: match_cfg_line_group(const char *grps, int line, const char *user)
489: {
490: int result = 0;
491: u_int ngrps = 0;
492: char *arg, *p, *cp, *grplist[MAX_MATCH_GROUPS];
493: struct passwd *pw;
494:
495: /*
496: * Even if we do not have a user yet, we still need to check for
497: * valid syntax.
498: */
499: arg = cp = xstrdup(grps);
500: while ((p = strsep(&cp, ",")) != NULL && *p != '\0') {
501: if (ngrps >= MAX_MATCH_GROUPS) {
502: error("line %d: too many groups in Match Group", line);
503: result = -1;
504: goto out;
505: }
506: grplist[ngrps++] = p;
507: }
508:
509: if (user == NULL)
510: goto out;
511:
512: if ((pw = getpwnam(user)) == NULL) {
513: debug("Can't match group at line %d because user %.100s does "
514: "not exist", line, user);
515: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
516: debug("Can't Match group because user %.100s not in any group "
517: "at line %d", user, line);
518: } else if (ga_match(grplist, ngrps) != 1) {
519: debug("user %.100s does not match group %.100s at line %d",
520: user, arg, line);
521: } else {
522: debug("user %.100s matched group %.100s at line %d", user,
523: arg, line);
524: result = 1;
525: }
526: out:
527: ga_free();
528: xfree(arg);
529: return result;
530: }
531:
532: static int
1.153 dtucker 533: match_cfg_line(char **condition, int line, const char *user, const char *host,
534: const char *address)
535: {
536: int result = 1;
537: char *arg, *attrib, *cp = *condition;
538: size_t len;
539:
540: if (user == NULL)
541: debug3("checking syntax for 'Match %s'", cp);
542: else
543: debug3("checking match for '%s' user %s host %s addr %s", cp,
544: user ? user : "(null)", host ? host : "(null)",
545: address ? address : "(null)");
546:
547: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
548: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
549: error("Missing Match criteria for %s", attrib);
550: return -1;
551: }
552: len = strlen(arg);
553: if (strcasecmp(attrib, "user") == 0) {
554: if (!user) {
555: result = 0;
556: continue;
557: }
558: if (match_pattern_list(user, arg, len, 0) != 1)
559: result = 0;
560: else
561: debug("user %.100s matched 'User %.100s' at "
562: "line %d", user, arg, line);
1.165 dtucker 563: } else if (strcasecmp(attrib, "group") == 0) {
564: switch (match_cfg_line_group(arg, line, user)) {
565: case -1:
566: return -1;
567: case 0:
568: result = 0;
569: }
1.153 dtucker 570: } else if (strcasecmp(attrib, "host") == 0) {
571: if (!host) {
572: result = 0;
573: continue;
574: }
575: if (match_hostname(host, arg, len) != 1)
576: result = 0;
577: else
578: debug("connection from %.100s matched 'Host "
579: "%.100s' at line %d", host, arg, line);
580: } else if (strcasecmp(attrib, "address") == 0) {
1.181 djm 581: switch (addr_match_list(address, arg)) {
582: case 1:
583: debug("connection from %.100s matched 'Address "
584: "%.100s' at line %d", address, arg, line);
585: break;
586: case 0:
1.183 djm 587: case -1:
1.153 dtucker 588: result = 0;
1.181 djm 589: break;
1.183 djm 590: case -2:
1.181 djm 591: return -1;
1.153 dtucker 592: }
593: } else {
594: error("Unsupported Match attribute %s", attrib);
595: return -1;
596: }
597: }
598: if (user != NULL)
599: debug3("match %sfound", result ? "" : "not ");
600: *condition = cp;
601: return result;
602: }
603:
1.158 dtucker 604: #define WHITESPACE " \t\r\n"
605:
1.94 markus 606: int
607: process_server_config_line(ServerOptions *options, char *line,
1.153 dtucker 608: const char *filename, int linenum, int *activep, const char *user,
609: const char *host, const char *address)
1.1 deraadt 610: {
1.74 stevesk 611: char *cp, **charptr, *arg, *p;
1.153 dtucker 612: int cmdline = 0, *intptr, value, n;
1.174 dtucker 613: SyslogFacility *log_facility_ptr;
614: LogLevel *log_level_ptr;
1.25 markus 615: ServerOpCodes opcode;
1.139 djm 616: u_short port;
1.153 dtucker 617: u_int i, flags = 0;
1.151 djm 618: size_t len;
1.25 markus 619:
1.94 markus 620: cp = line;
1.148 dtucker 621: if ((arg = strdelim(&cp)) == NULL)
1.147 djm 622: return 0;
1.94 markus 623: /* Ignore leading whitespace */
624: if (*arg == '\0')
625: arg = strdelim(&cp);
626: if (!arg || !*arg || *arg == '#')
627: return 0;
628: intptr = NULL;
629: charptr = NULL;
1.153 dtucker 630: opcode = parse_token(arg, filename, linenum, &flags);
631:
632: if (activep == NULL) { /* We are processing a command line directive */
633: cmdline = 1;
634: activep = &cmdline;
635: }
636: if (*activep && opcode != sMatch)
637: debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
638: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
639: if (user == NULL) {
640: fatal("%s line %d: Directive '%s' is not allowed "
641: "within a Match block", filename, linenum, arg);
642: } else { /* this is a directive we have already processed */
643: while (arg)
644: arg = strdelim(&cp);
645: return 0;
646: }
647: }
648:
1.94 markus 649: switch (opcode) {
650: case sBadOption:
651: return -1;
652: case sPort:
653: /* ignore ports from configfile if cmdline specifies ports */
654: if (options->ports_from_cmdline)
655: return 0;
656: if (options->listen_addrs != NULL)
657: fatal("%s line %d: ports must be specified before "
1.98 stevesk 658: "ListenAddress.", filename, linenum);
1.94 markus 659: if (options->num_ports >= MAX_PORTS)
660: fatal("%s line %d: too many ports.",
661: filename, linenum);
1.48 provos 662: arg = strdelim(&cp);
1.94 markus 663: if (!arg || *arg == '\0')
664: fatal("%s line %d: missing port number.",
665: filename, linenum);
666: options->ports[options->num_ports++] = a2port(arg);
667: if (options->ports[options->num_ports-1] == 0)
668: fatal("%s line %d: Badly formatted port number.",
669: filename, linenum);
670: break;
1.29 markus 671:
1.94 markus 672: case sServerKeyBits:
673: intptr = &options->server_key_bits;
1.180 djm 674: parse_int:
1.94 markus 675: arg = strdelim(&cp);
676: if (!arg || *arg == '\0')
677: fatal("%s line %d: missing integer value.",
678: filename, linenum);
679: value = atoi(arg);
1.153 dtucker 680: if (*activep && *intptr == -1)
1.94 markus 681: *intptr = value;
682: break;
1.25 markus 683:
1.94 markus 684: case sLoginGraceTime:
685: intptr = &options->login_grace_time;
1.180 djm 686: parse_time:
1.94 markus 687: arg = strdelim(&cp);
688: if (!arg || *arg == '\0')
689: fatal("%s line %d: missing time value.",
690: filename, linenum);
691: if ((value = convtime(arg)) == -1)
692: fatal("%s line %d: invalid time value.",
693: filename, linenum);
694: if (*intptr == -1)
695: *intptr = value;
696: break;
697:
698: case sKeyRegenerationTime:
699: intptr = &options->key_regeneration_time;
700: goto parse_time;
701:
702: case sListenAddress:
703: arg = strdelim(&cp);
1.139 djm 704: if (arg == NULL || *arg == '\0')
705: fatal("%s line %d: missing address",
1.94 markus 706: filename, linenum);
1.144 dtucker 707: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
708: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
709: && strchr(p+1, ':') != NULL) {
710: add_listen_addr(options, arg, 0);
711: break;
712: }
1.139 djm 713: p = hpdelim(&arg);
714: if (p == NULL)
715: fatal("%s line %d: bad address:port usage",
716: filename, linenum);
717: p = cleanhostname(p);
718: if (arg == NULL)
719: port = 0;
720: else if ((port = a2port(arg)) == 0)
721: fatal("%s line %d: bad port number", filename, linenum);
722:
723: add_listen_addr(options, p, port);
1.25 markus 724:
1.138 djm 725: break;
726:
727: case sAddressFamily:
728: arg = strdelim(&cp);
1.141 markus 729: if (!arg || *arg == '\0')
730: fatal("%s line %d: missing address family.",
731: filename, linenum);
1.138 djm 732: intptr = &options->address_family;
733: if (options->listen_addrs != NULL)
734: fatal("%s line %d: address family must be specified before "
735: "ListenAddress.", filename, linenum);
736: if (strcasecmp(arg, "inet") == 0)
737: value = AF_INET;
738: else if (strcasecmp(arg, "inet6") == 0)
739: value = AF_INET6;
740: else if (strcasecmp(arg, "any") == 0)
741: value = AF_UNSPEC;
742: else
743: fatal("%s line %d: unsupported address family \"%s\".",
744: filename, linenum, arg);
745: if (*intptr == -1)
746: *intptr = value;
1.94 markus 747: break;
748:
749: case sHostKeyFile:
750: intptr = &options->num_host_key_files;
751: if (*intptr >= MAX_HOSTKEYS)
752: fatal("%s line %d: too many host keys specified (max %d).",
753: filename, linenum, MAX_HOSTKEYS);
754: charptr = &options->host_key_files[*intptr];
1.180 djm 755: parse_filename:
1.94 markus 756: arg = strdelim(&cp);
757: if (!arg || *arg == '\0')
758: fatal("%s line %d: missing file name.",
759: filename, linenum);
1.153 dtucker 760: if (*activep && *charptr == NULL) {
1.94 markus 761: *charptr = tilde_expand_filename(arg, getuid());
762: /* increase optional counter */
763: if (intptr != NULL)
764: *intptr = *intptr + 1;
765: }
766: break;
1.76 stevesk 767:
1.94 markus 768: case sPidFile:
769: charptr = &options->pid_file;
770: goto parse_filename;
1.25 markus 771:
1.94 markus 772: case sPermitRootLogin:
773: intptr = &options->permit_root_login;
774: arg = strdelim(&cp);
775: if (!arg || *arg == '\0')
776: fatal("%s line %d: missing yes/"
777: "without-password/forced-commands-only/no "
778: "argument.", filename, linenum);
779: value = 0; /* silence compiler */
780: if (strcmp(arg, "without-password") == 0)
781: value = PERMIT_NO_PASSWD;
782: else if (strcmp(arg, "forced-commands-only") == 0)
783: value = PERMIT_FORCED_ONLY;
784: else if (strcmp(arg, "yes") == 0)
785: value = PERMIT_YES;
786: else if (strcmp(arg, "no") == 0)
787: value = PERMIT_NO;
788: else
789: fatal("%s line %d: Bad yes/"
790: "without-password/forced-commands-only/no "
791: "argument: %s", filename, linenum, arg);
1.175 dtucker 792: if (*activep && *intptr == -1)
1.94 markus 793: *intptr = value;
794: break;
1.36 markus 795:
1.94 markus 796: case sIgnoreRhosts:
797: intptr = &options->ignore_rhosts;
1.180 djm 798: parse_flag:
1.94 markus 799: arg = strdelim(&cp);
800: if (!arg || *arg == '\0')
801: fatal("%s line %d: missing yes/no argument.",
802: filename, linenum);
803: value = 0; /* silence compiler */
804: if (strcmp(arg, "yes") == 0)
805: value = 1;
806: else if (strcmp(arg, "no") == 0)
807: value = 0;
808: else
809: fatal("%s line %d: Bad yes/no argument: %s",
810: filename, linenum, arg);
1.153 dtucker 811: if (*activep && *intptr == -1)
1.94 markus 812: *intptr = value;
813: break;
814:
815: case sIgnoreUserKnownHosts:
816: intptr = &options->ignore_user_known_hosts;
817: goto parse_flag;
818:
819: case sRhostsRSAAuthentication:
820: intptr = &options->rhosts_rsa_authentication;
821: goto parse_flag;
822:
823: case sHostbasedAuthentication:
824: intptr = &options->hostbased_authentication;
825: goto parse_flag;
826:
827: case sHostbasedUsesNameFromPacketOnly:
828: intptr = &options->hostbased_uses_name_from_packet_only;
829: goto parse_flag;
830:
831: case sRSAAuthentication:
832: intptr = &options->rsa_authentication;
833: goto parse_flag;
834:
835: case sPubkeyAuthentication:
836: intptr = &options->pubkey_authentication;
837: goto parse_flag;
1.119 jakob 838:
1.94 markus 839: case sKerberosAuthentication:
840: intptr = &options->kerberos_authentication;
841: goto parse_flag;
842:
843: case sKerberosOrLocalPasswd:
844: intptr = &options->kerberos_or_local_passwd;
845: goto parse_flag;
846:
847: case sKerberosTicketCleanup:
848: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 849: goto parse_flag;
850:
851: case sKerberosGetAFSToken:
852: intptr = &options->kerberos_get_afs_token;
1.125 markus 853: goto parse_flag;
854:
855: case sGssAuthentication:
856: intptr = &options->gss_authentication;
857: goto parse_flag;
858:
859: case sGssCleanupCreds:
860: intptr = &options->gss_cleanup_creds;
1.94 markus 861: goto parse_flag;
862:
863: case sPasswordAuthentication:
864: intptr = &options->password_authentication;
865: goto parse_flag;
866:
867: case sKbdInteractiveAuthentication:
868: intptr = &options->kbd_interactive_authentication;
869: goto parse_flag;
870:
871: case sChallengeResponseAuthentication:
872: intptr = &options->challenge_response_authentication;
873: goto parse_flag;
874:
875: case sPrintMotd:
876: intptr = &options->print_motd;
877: goto parse_flag;
878:
879: case sPrintLastLog:
880: intptr = &options->print_lastlog;
881: goto parse_flag;
882:
883: case sX11Forwarding:
884: intptr = &options->x11_forwarding;
885: goto parse_flag;
886:
887: case sX11DisplayOffset:
888: intptr = &options->x11_display_offset;
889: goto parse_int;
1.99 stevesk 890:
891: case sX11UseLocalhost:
892: intptr = &options->x11_use_localhost;
893: goto parse_flag;
1.94 markus 894:
895: case sXAuthLocation:
896: charptr = &options->xauth_location;
897: goto parse_filename;
898:
899: case sStrictModes:
900: intptr = &options->strict_modes;
901: goto parse_flag;
902:
1.129 markus 903: case sTCPKeepAlive:
904: intptr = &options->tcp_keep_alive;
1.94 markus 905: goto parse_flag;
906:
907: case sEmptyPasswd:
908: intptr = &options->permit_empty_passwd;
1.113 markus 909: goto parse_flag;
910:
911: case sPermitUserEnvironment:
912: intptr = &options->permit_user_env;
1.94 markus 913: goto parse_flag;
914:
915: case sUseLogin:
916: intptr = &options->use_login;
1.111 markus 917: goto parse_flag;
918:
919: case sCompression:
920: intptr = &options->compression;
1.143 markus 921: arg = strdelim(&cp);
922: if (!arg || *arg == '\0')
923: fatal("%s line %d: missing yes/no/delayed "
924: "argument.", filename, linenum);
925: value = 0; /* silence compiler */
926: if (strcmp(arg, "delayed") == 0)
927: value = COMP_DELAYED;
928: else if (strcmp(arg, "yes") == 0)
929: value = COMP_ZLIB;
930: else if (strcmp(arg, "no") == 0)
931: value = COMP_NONE;
932: else
933: fatal("%s line %d: Bad yes/no/delayed "
934: "argument: %s", filename, linenum, arg);
935: if (*intptr == -1)
936: *intptr = value;
937: break;
1.94 markus 938:
939: case sGatewayPorts:
940: intptr = &options->gateway_ports;
1.139 djm 941: arg = strdelim(&cp);
942: if (!arg || *arg == '\0')
943: fatal("%s line %d: missing yes/no/clientspecified "
944: "argument.", filename, linenum);
945: value = 0; /* silence compiler */
946: if (strcmp(arg, "clientspecified") == 0)
947: value = 2;
948: else if (strcmp(arg, "yes") == 0)
949: value = 1;
950: else if (strcmp(arg, "no") == 0)
951: value = 0;
952: else
953: fatal("%s line %d: Bad yes/no/clientspecified "
954: "argument: %s", filename, linenum, arg);
1.169 dtucker 955: if (*activep && *intptr == -1)
1.139 djm 956: *intptr = value;
957: break;
1.25 markus 958:
1.122 markus 959: case sUseDNS:
960: intptr = &options->use_dns;
1.94 markus 961: goto parse_flag;
1.53 markus 962:
1.94 markus 963: case sLogFacility:
1.174 dtucker 964: log_facility_ptr = &options->log_facility;
1.94 markus 965: arg = strdelim(&cp);
966: value = log_facility_number(arg);
1.101 markus 967: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 968: fatal("%.200s line %d: unsupported log facility '%s'",
969: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 970: if (*log_facility_ptr == -1)
971: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 972: break;
1.25 markus 973:
1.94 markus 974: case sLogLevel:
1.174 dtucker 975: log_level_ptr = &options->log_level;
1.94 markus 976: arg = strdelim(&cp);
977: value = log_level_number(arg);
1.101 markus 978: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 979: fatal("%.200s line %d: unsupported log level '%s'",
980: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 981: if (*log_level_ptr == -1)
982: *log_level_ptr = (LogLevel) value;
1.94 markus 983: break;
984:
985: case sAllowTcpForwarding:
986: intptr = &options->allow_tcp_forwarding;
987: goto parse_flag;
1.102 provos 988:
1.178 pyr 989: case sAllowAgentForwarding:
990: intptr = &options->allow_agent_forwarding;
991: goto parse_flag;
992:
1.102 provos 993: case sUsePrivilegeSeparation:
994: intptr = &use_privsep;
995: goto parse_flag;
1.94 markus 996:
997: case sAllowUsers:
998: while ((arg = strdelim(&cp)) && *arg != '\0') {
999: if (options->num_allow_users >= MAX_ALLOW_USERS)
1000: fatal("%s line %d: too many allow users.",
1001: filename, linenum);
1.112 deraadt 1002: options->allow_users[options->num_allow_users++] =
1003: xstrdup(arg);
1.94 markus 1004: }
1005: break;
1.25 markus 1006:
1.94 markus 1007: case sDenyUsers:
1008: while ((arg = strdelim(&cp)) && *arg != '\0') {
1009: if (options->num_deny_users >= MAX_DENY_USERS)
1.163 stevesk 1010: fatal("%s line %d: too many deny users.",
1.94 markus 1011: filename, linenum);
1.112 deraadt 1012: options->deny_users[options->num_deny_users++] =
1013: xstrdup(arg);
1.94 markus 1014: }
1015: break;
1.25 markus 1016:
1.94 markus 1017: case sAllowGroups:
1018: while ((arg = strdelim(&cp)) && *arg != '\0') {
1019: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1020: fatal("%s line %d: too many allow groups.",
1021: filename, linenum);
1.112 deraadt 1022: options->allow_groups[options->num_allow_groups++] =
1023: xstrdup(arg);
1.94 markus 1024: }
1025: break;
1.33 markus 1026:
1.94 markus 1027: case sDenyGroups:
1028: while ((arg = strdelim(&cp)) && *arg != '\0') {
1029: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1030: fatal("%s line %d: too many deny groups.",
1031: filename, linenum);
1032: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1033: }
1034: break;
1.66 markus 1035:
1.94 markus 1036: case sCiphers:
1037: arg = strdelim(&cp);
1038: if (!arg || *arg == '\0')
1039: fatal("%s line %d: Missing argument.", filename, linenum);
1040: if (!ciphers_valid(arg))
1041: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1042: filename, linenum, arg ? arg : "<NONE>");
1043: if (options->ciphers == NULL)
1044: options->ciphers = xstrdup(arg);
1045: break;
1.33 markus 1046:
1.94 markus 1047: case sMacs:
1048: arg = strdelim(&cp);
1049: if (!arg || *arg == '\0')
1050: fatal("%s line %d: Missing argument.", filename, linenum);
1051: if (!mac_valid(arg))
1052: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1053: filename, linenum, arg ? arg : "<NONE>");
1054: if (options->macs == NULL)
1055: options->macs = xstrdup(arg);
1056: break;
1.43 jakob 1057:
1.94 markus 1058: case sProtocol:
1059: intptr = &options->protocol;
1060: arg = strdelim(&cp);
1061: if (!arg || *arg == '\0')
1062: fatal("%s line %d: Missing argument.", filename, linenum);
1063: value = proto_spec(arg);
1064: if (value == SSH_PROTO_UNKNOWN)
1065: fatal("%s line %d: Bad protocol spec '%s'.",
1.95 deraadt 1066: filename, linenum, arg ? arg : "<NONE>");
1.94 markus 1067: if (*intptr == SSH_PROTO_UNKNOWN)
1068: *intptr = value;
1069: break;
1070:
1071: case sSubsystem:
1072: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1073: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1074: filename, linenum);
1.94 markus 1075: }
1076: arg = strdelim(&cp);
1077: if (!arg || *arg == '\0')
1078: fatal("%s line %d: Missing subsystem name.",
1.95 deraadt 1079: filename, linenum);
1.153 dtucker 1080: if (!*activep) {
1081: arg = strdelim(&cp);
1082: break;
1083: }
1.94 markus 1084: for (i = 0; i < options->num_subsystems; i++)
1085: if (strcmp(arg, options->subsystem_name[i]) == 0)
1086: fatal("%s line %d: Subsystem '%s' already defined.",
1.95 deraadt 1087: filename, linenum, arg);
1.94 markus 1088: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1089: arg = strdelim(&cp);
1090: if (!arg || *arg == '\0')
1091: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1092: filename, linenum);
1.94 markus 1093: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1094:
1095: /* Collect arguments (separate to executable) */
1096: p = xstrdup(arg);
1097: len = strlen(p) + 1;
1098: while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1099: len += 1 + strlen(arg);
1100: p = xrealloc(p, 1, len);
1101: strlcat(p, " ", len);
1102: strlcat(p, arg, len);
1103: }
1104: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1105: options->num_subsystems++;
1106: break;
1.46 markus 1107:
1.94 markus 1108: case sMaxStartups:
1109: arg = strdelim(&cp);
1110: if (!arg || *arg == '\0')
1111: fatal("%s line %d: Missing MaxStartups spec.",
1.95 deraadt 1112: filename, linenum);
1.94 markus 1113: if ((n = sscanf(arg, "%d:%d:%d",
1114: &options->max_startups_begin,
1115: &options->max_startups_rate,
1116: &options->max_startups)) == 3) {
1117: if (options->max_startups_begin >
1118: options->max_startups ||
1119: options->max_startups_rate > 100 ||
1120: options->max_startups_rate < 1)
1.50 markus 1121: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 1122: filename, linenum);
1.94 markus 1123: } else if (n != 1)
1124: fatal("%s line %d: Illegal MaxStartups spec.",
1125: filename, linenum);
1126: else
1127: options->max_startups = options->max_startups_begin;
1128: break;
1.133 dtucker 1129:
1130: case sMaxAuthTries:
1131: intptr = &options->max_authtries;
1132: goto parse_int;
1.94 markus 1133:
1.180 djm 1134: case sMaxSessions:
1135: intptr = &options->max_sessions;
1136: goto parse_int;
1137:
1.94 markus 1138: case sBanner:
1139: charptr = &options->banner;
1140: goto parse_filename;
1.176 djm 1141:
1.94 markus 1142: /*
1143: * These options can contain %X options expanded at
1144: * connect time, so that you can specify paths like:
1145: *
1146: * AuthorizedKeysFile /etc/ssh_keys/%u
1147: */
1148: case sAuthorizedKeysFile:
1149: case sAuthorizedKeysFile2:
1.163 stevesk 1150: charptr = (opcode == sAuthorizedKeysFile) ?
1.94 markus 1151: &options->authorized_keys_file :
1152: &options->authorized_keys_file2;
1153: goto parse_filename;
1154:
1155: case sClientAliveInterval:
1156: intptr = &options->client_alive_interval;
1157: goto parse_time;
1158:
1159: case sClientAliveCountMax:
1160: intptr = &options->client_alive_count_max;
1161: goto parse_int;
1.131 djm 1162:
1163: case sAcceptEnv:
1164: while ((arg = strdelim(&cp)) && *arg != '\0') {
1165: if (strchr(arg, '=') != NULL)
1166: fatal("%s line %d: Invalid environment name.",
1167: filename, linenum);
1168: if (options->num_accept_env >= MAX_ACCEPT_ENV)
1169: fatal("%s line %d: too many allow env.",
1170: filename, linenum);
1.153 dtucker 1171: if (!*activep)
1172: break;
1.131 djm 1173: options->accept_env[options->num_accept_env++] =
1174: xstrdup(arg);
1175: }
1176: break;
1.145 reyk 1177:
1178: case sPermitTunnel:
1179: intptr = &options->permit_tun;
1.146 reyk 1180: arg = strdelim(&cp);
1181: if (!arg || *arg == '\0')
1182: fatal("%s line %d: Missing yes/point-to-point/"
1183: "ethernet/no argument.", filename, linenum);
1.182 dtucker 1184: value = -1;
1185: for (i = 0; tunmode_desc[i].val != -1; i++)
1186: if (strcmp(tunmode_desc[i].text, arg) == 0) {
1187: value = tunmode_desc[i].val;
1188: break;
1189: }
1190: if (value == -1)
1.146 reyk 1191: fatal("%s line %d: Bad yes/point-to-point/ethernet/"
1192: "no argument: %s", filename, linenum, arg);
1193: if (*intptr == -1)
1194: *intptr = value;
1195: break;
1.94 markus 1196:
1.153 dtucker 1197: case sMatch:
1198: if (cmdline)
1199: fatal("Match directive not supported as a command-line "
1200: "option");
1201: value = match_cfg_line(&cp, linenum, user, host, address);
1202: if (value < 0)
1203: fatal("%s line %d: Bad Match condition", filename,
1204: linenum);
1205: *activep = value;
1.156 dtucker 1206: break;
1207:
1208: case sPermitOpen:
1209: arg = strdelim(&cp);
1210: if (!arg || *arg == '\0')
1211: fatal("%s line %d: missing PermitOpen specification",
1212: filename, linenum);
1.167 dtucker 1213: n = options->num_permitted_opens; /* modified later */
1.156 dtucker 1214: if (strcmp(arg, "any") == 0) {
1.167 dtucker 1215: if (*activep && n == -1) {
1.156 dtucker 1216: channel_clear_adm_permitted_opens();
1.159 dtucker 1217: options->num_permitted_opens = 0;
1218: }
1.156 dtucker 1219: break;
1220: }
1.166 dtucker 1221: if (*activep && n == -1)
1222: channel_clear_adm_permitted_opens();
1.159 dtucker 1223: for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
1224: p = hpdelim(&arg);
1225: if (p == NULL)
1226: fatal("%s line %d: missing host in PermitOpen",
1227: filename, linenum);
1228: p = cleanhostname(p);
1229: if (arg == NULL || (port = a2port(arg)) == 0)
1230: fatal("%s line %d: bad port number in "
1231: "PermitOpen", filename, linenum);
1.166 dtucker 1232: if (*activep && n == -1)
1.159 dtucker 1233: options->num_permitted_opens =
1234: channel_add_adm_permitted_opens(p, port);
1235: }
1.153 dtucker 1236: break;
1237:
1.158 dtucker 1238: case sForceCommand:
1239: if (cp == NULL)
1240: fatal("%.200s line %d: Missing argument.", filename,
1241: linenum);
1242: len = strspn(cp, WHITESPACE);
1243: if (*activep && options->adm_forced_command == NULL)
1244: options->adm_forced_command = xstrdup(cp + len);
1245: return 0;
1246:
1.176 djm 1247: case sChrootDirectory:
1248: charptr = &options->chroot_directory;
1.177 djm 1249:
1250: arg = strdelim(&cp);
1251: if (!arg || *arg == '\0')
1252: fatal("%s line %d: missing file name.",
1253: filename, linenum);
1254: if (*activep && *charptr == NULL)
1255: *charptr = xstrdup(arg);
1256: break;
1.176 djm 1257:
1.94 markus 1258: case sDeprecated:
1.117 itojun 1259: logit("%s line %d: Deprecated option %s",
1.121 jakob 1260: filename, linenum, arg);
1261: while (arg)
1262: arg = strdelim(&cp);
1263: break;
1264:
1265: case sUnsupported:
1266: logit("%s line %d: Unsupported option %s",
1.94 markus 1267: filename, linenum, arg);
1268: while (arg)
1269: arg = strdelim(&cp);
1270: break;
1271:
1272: default:
1273: fatal("%s line %d: Missing handler for opcode %s (%d)",
1274: filename, linenum, arg, opcode);
1275: }
1276: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
1277: fatal("%s line %d: garbage at end of line; \"%.200s\".",
1278: filename, linenum, arg);
1279: return 0;
1280: }
1281:
1282: /* Reads the server configuration file. */
1.25 markus 1283:
1.94 markus 1284: void
1.134 djm 1285: load_server_config(const char *filename, Buffer *conf)
1.94 markus 1286: {
1.134 djm 1287: char line[1024], *cp;
1.94 markus 1288: FILE *f;
1.81 stevesk 1289:
1.134 djm 1290: debug2("%s: filename %s", __func__, filename);
1291: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 1292: perror(filename);
1293: exit(1);
1294: }
1.134 djm 1295: buffer_clear(conf);
1296: while (fgets(line, sizeof(line), f)) {
1297: /*
1298: * Trim out comments and strip whitespace
1.135 deraadt 1299: * NB - preserve newlines, they are needed to reproduce
1.134 djm 1300: * line numbers later for error messages
1301: */
1302: if ((cp = strchr(line, '#')) != NULL)
1303: memcpy(cp, "\n", 2);
1304: cp = line + strspn(line, " \t\r");
1305:
1306: buffer_append(conf, cp, strlen(cp));
1307: }
1308: buffer_append(conf, "\0", 1);
1309: fclose(f);
1310: debug2("%s: done config len = %d", __func__, buffer_len(conf));
1311: }
1312:
1313: void
1.153 dtucker 1314: parse_server_match_config(ServerOptions *options, const char *user,
1315: const char *host, const char *address)
1316: {
1317: ServerOptions mo;
1318:
1319: initialize_server_options(&mo);
1320: parse_server_config(&mo, "reprocess config", &cfg, user, host, address);
1.168 dtucker 1321: copy_set_server_options(options, &mo, 0);
1.153 dtucker 1322: }
1323:
1.168 dtucker 1324: /* Helper macros */
1325: #define M_CP_INTOPT(n) do {\
1326: if (src->n != -1) \
1327: dst->n = src->n; \
1328: } while (0)
1329: #define M_CP_STROPT(n) do {\
1330: if (src->n != NULL) { \
1331: if (dst->n != NULL) \
1332: xfree(dst->n); \
1333: dst->n = src->n; \
1334: } \
1335: } while(0)
1336:
1337: /*
1338: * Copy any supported values that are set.
1339: *
1340: * If the preauth flag is set, we do not bother copying the the string or
1341: * array values that are not used pre-authentication, because any that we
1342: * do use must be explictly sent in mm_getpwnamallow().
1343: */
1.153 dtucker 1344: void
1.168 dtucker 1345: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 1346: {
1.168 dtucker 1347: M_CP_INTOPT(password_authentication);
1348: M_CP_INTOPT(gss_authentication);
1349: M_CP_INTOPT(rsa_authentication);
1350: M_CP_INTOPT(pubkey_authentication);
1351: M_CP_INTOPT(kerberos_authentication);
1352: M_CP_INTOPT(hostbased_authentication);
1353: M_CP_INTOPT(kbd_interactive_authentication);
1.175 dtucker 1354: M_CP_INTOPT(permit_root_login);
1.168 dtucker 1355:
1356: M_CP_INTOPT(allow_tcp_forwarding);
1.178 pyr 1357: M_CP_INTOPT(allow_agent_forwarding);
1.168 dtucker 1358: M_CP_INTOPT(gateway_ports);
1359: M_CP_INTOPT(x11_display_offset);
1360: M_CP_INTOPT(x11_forwarding);
1361: M_CP_INTOPT(x11_use_localhost);
1.180 djm 1362: M_CP_INTOPT(max_sessions);
1.184 dtucker 1363: M_CP_INTOPT(max_authtries);
1.168 dtucker 1364:
1365: M_CP_STROPT(banner);
1366: if (preauth)
1367: return;
1368: M_CP_STROPT(adm_forced_command);
1.176 djm 1369: M_CP_STROPT(chroot_directory);
1.153 dtucker 1370: }
1.168 dtucker 1371:
1372: #undef M_CP_INTOPT
1373: #undef M_CP_STROPT
1.153 dtucker 1374:
1375: void
1376: parse_server_config(ServerOptions *options, const char *filename, Buffer *conf,
1377: const char *user, const char *host, const char *address)
1.134 djm 1378: {
1.153 dtucker 1379: int active, linenum, bad_options = 0;
1.136 dtucker 1380: char *cp, *obuf, *cbuf;
1.134 djm 1381:
1382: debug2("%s: config %s len %d", __func__, filename, buffer_len(conf));
1383:
1.136 dtucker 1384: obuf = cbuf = xstrdup(buffer_ptr(conf));
1.153 dtucker 1385: active = user ? 0 : 1;
1.137 dtucker 1386: linenum = 1;
1.140 deraadt 1387: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.134 djm 1388: if (process_server_config_line(options, cp, filename,
1.153 dtucker 1389: linenum++, &active, user, host, address) != 0)
1.94 markus 1390: bad_options++;
1.1 deraadt 1391: }
1.136 dtucker 1392: xfree(obuf);
1.78 stevesk 1393: if (bad_options > 0)
1394: fatal("%s: terminating, %d bad configuration options",
1395: filename, bad_options);
1.182 dtucker 1396: }
1397:
1398: static const char *
1399: fmt_intarg(ServerOpCodes code, int val)
1400: {
1401: if (code == sAddressFamily) {
1402: switch (val) {
1403: case AF_INET:
1404: return "inet";
1405: case AF_INET6:
1406: return "inet6";
1407: case AF_UNSPEC:
1408: return "any";
1409: default:
1410: return "UNKNOWN";
1411: }
1412: }
1413: if (code == sPermitRootLogin) {
1414: switch (val) {
1415: case PERMIT_NO_PASSWD:
1416: return "without-passord";
1417: case PERMIT_FORCED_ONLY:
1418: return "forced-commands-only";
1419: case PERMIT_YES:
1420: return "yes";
1421: }
1422: }
1423: if (code == sProtocol) {
1424: switch (val) {
1425: case SSH_PROTO_1:
1426: return "1";
1427: case SSH_PROTO_2:
1428: return "2";
1429: case (SSH_PROTO_1|SSH_PROTO_2):
1430: return "2,1";
1431: default:
1432: return "UNKNOWN";
1433: }
1434: }
1435: if (code == sGatewayPorts && val == 2)
1436: return "clientspecified";
1437: if (code == sCompression && val == COMP_DELAYED)
1438: return "delayed";
1439: switch (val) {
1440: case -1:
1441: return "unset";
1442: case 0:
1443: return "no";
1444: case 1:
1445: return "yes";
1446: }
1447: return "UNKNOWN";
1448: }
1449:
1450: static const char *
1451: lookup_opcode_name(ServerOpCodes code)
1452: {
1453: u_int i;
1454:
1455: for (i = 0; keywords[i].name != NULL; i++)
1456: if (keywords[i].opcode == code)
1457: return(keywords[i].name);
1458: return "UNKNOWN";
1459: }
1460:
1461: static void
1462: dump_cfg_int(ServerOpCodes code, int val)
1463: {
1464: printf("%s %d\n", lookup_opcode_name(code), val);
1465: }
1466:
1467: static void
1468: dump_cfg_fmtint(ServerOpCodes code, int val)
1469: {
1470: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
1471: }
1472:
1473: static void
1474: dump_cfg_string(ServerOpCodes code, const char *val)
1475: {
1476: if (val == NULL)
1477: return;
1478: printf("%s %s\n", lookup_opcode_name(code), val);
1479: }
1480:
1481: static void
1482: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
1483: {
1484: u_int i;
1485:
1486: for (i = 0; i < count; i++)
1487: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
1488: }
1489:
1490: void
1491: dump_config(ServerOptions *o)
1492: {
1493: u_int i;
1494: int ret;
1495: struct addrinfo *ai;
1496: char addr[NI_MAXHOST], port[NI_MAXSERV], *s = NULL;
1497:
1498: /* these are usually at the top of the config */
1499: for (i = 0; i < o->num_ports; i++)
1500: printf("port %d\n", o->ports[i]);
1501: dump_cfg_fmtint(sProtocol, o->protocol);
1502: dump_cfg_fmtint(sAddressFamily, o->address_family);
1503:
1504: /* ListenAddress must be after Port */
1505: for (ai = o->listen_addrs; ai; ai = ai->ai_next) {
1506: if ((ret = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1507: sizeof(addr), port, sizeof(port),
1508: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1509: error("getnameinfo failed: %.100s",
1510: (ret != EAI_SYSTEM) ? gai_strerror(ret) :
1511: strerror(errno));
1512: } else {
1513: if (ai->ai_family == AF_INET6)
1514: printf("listenaddress [%s]:%s\n", addr, port);
1515: else
1516: printf("listenaddress %s:%s\n", addr, port);
1517: }
1518: }
1519:
1520: /* integer arguments */
1521: dump_cfg_int(sServerKeyBits, o->server_key_bits);
1522: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
1523: dump_cfg_int(sKeyRegenerationTime, o->key_regeneration_time);
1524: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
1525: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1526: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
1527: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1528:
1529: /* formatted integer arguments */
1530: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
1531: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
1532: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
1533: dump_cfg_fmtint(sRhostsRSAAuthentication, o->rhosts_rsa_authentication);
1534: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
1535: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
1536: o->hostbased_uses_name_from_packet_only);
1537: dump_cfg_fmtint(sRSAAuthentication, o->rsa_authentication);
1538: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1539: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
1540: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
1541: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
1542: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1543: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
1544: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1545: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
1546: dump_cfg_fmtint(sKbdInteractiveAuthentication,
1547: o->kbd_interactive_authentication);
1548: dump_cfg_fmtint(sChallengeResponseAuthentication,
1549: o->challenge_response_authentication);
1550: dump_cfg_fmtint(sPrintMotd, o->print_motd);
1551: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
1552: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
1553: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1554: dump_cfg_fmtint(sStrictModes, o->strict_modes);
1555: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
1556: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
1557: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
1558: dump_cfg_fmtint(sUseLogin, o->use_login);
1559: dump_cfg_fmtint(sCompression, o->compression);
1560: dump_cfg_fmtint(sGatewayPorts, o->gateway_ports);
1561: dump_cfg_fmtint(sUseDNS, o->use_dns);
1562: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1563: dump_cfg_fmtint(sUsePrivilegeSeparation, use_privsep);
1564:
1565: /* string arguments */
1566: dump_cfg_string(sPidFile, o->pid_file);
1567: dump_cfg_string(sXAuthLocation, o->xauth_location);
1568: dump_cfg_string(sCiphers, o->ciphers);
1569: dump_cfg_string(sMacs, o->macs);
1570: dump_cfg_string(sBanner, o->banner);
1571: dump_cfg_string(sAuthorizedKeysFile, o->authorized_keys_file);
1572: dump_cfg_string(sAuthorizedKeysFile2, o->authorized_keys_file2);
1573: dump_cfg_string(sForceCommand, o->adm_forced_command);
1574:
1575: /* string arguments requiring a lookup */
1576: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
1577: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
1578:
1579: /* string array arguments */
1580: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
1581: o->host_key_files);
1582: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
1583: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
1584: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
1585: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
1586: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1587:
1588: /* other arguments */
1589: for (i = 0; i < o->num_subsystems; i++)
1590: printf("subsystem %s %s\n", o->subsystem_name[i],
1591: o->subsystem_args[i]);
1592:
1593: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
1594: o->max_startups_rate, o->max_startups);
1595:
1596: for (i = 0; tunmode_desc[i].val != -1; i++)
1597: if (tunmode_desc[i].val == o->permit_tun) {
1598: s = tunmode_desc[i].text;
1599: break;
1600: }
1601: dump_cfg_string(sPermitTunnel, s);
1602:
1603: printf("permitopen");
1604: channel_print_adm_permitted_opens();
1605: printf("\n");
1.1 deraadt 1606: }
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