Annotation of src/usr.bin/ssh/servconf.c, Revision 1.189
1.189 ! djm 1: /* $OpenBSD: servconf.c,v 1.188 2008/10/09 03:50:54 djm 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 },
1.188 djm 346: { "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
1.153 dtucker 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: struct passwd *pw;
492:
493: if (user == NULL)
494: goto out;
495:
496: if ((pw = getpwnam(user)) == NULL) {
497: debug("Can't match group at line %d because user %.100s does "
498: "not exist", line, user);
499: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
500: debug("Can't Match group because user %.100s not in any group "
501: "at line %d", user, line);
1.186 djm 502: } else if (ga_match_pattern_list(grps) != 1) {
503: debug("user %.100s does not match group list %.100s at line %d",
504: user, grps, line);
1.165 dtucker 505: } else {
1.186 djm 506: debug("user %.100s matched group list %.100s at line %d", user,
507: grps, line);
1.165 dtucker 508: result = 1;
509: }
510: out:
511: ga_free();
512: return result;
513: }
514:
515: static int
1.153 dtucker 516: match_cfg_line(char **condition, int line, const char *user, const char *host,
517: const char *address)
518: {
519: int result = 1;
520: char *arg, *attrib, *cp = *condition;
521: size_t len;
522:
523: if (user == NULL)
524: debug3("checking syntax for 'Match %s'", cp);
525: else
526: debug3("checking match for '%s' user %s host %s addr %s", cp,
527: user ? user : "(null)", host ? host : "(null)",
528: address ? address : "(null)");
529:
530: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
531: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
532: error("Missing Match criteria for %s", attrib);
533: return -1;
534: }
535: len = strlen(arg);
536: if (strcasecmp(attrib, "user") == 0) {
537: if (!user) {
538: result = 0;
539: continue;
540: }
541: if (match_pattern_list(user, arg, len, 0) != 1)
542: result = 0;
543: else
544: debug("user %.100s matched 'User %.100s' at "
545: "line %d", user, arg, line);
1.165 dtucker 546: } else if (strcasecmp(attrib, "group") == 0) {
547: switch (match_cfg_line_group(arg, line, user)) {
548: case -1:
549: return -1;
550: case 0:
551: result = 0;
552: }
1.153 dtucker 553: } else if (strcasecmp(attrib, "host") == 0) {
554: if (!host) {
555: result = 0;
556: continue;
557: }
558: if (match_hostname(host, arg, len) != 1)
559: result = 0;
560: else
561: debug("connection from %.100s matched 'Host "
562: "%.100s' at line %d", host, arg, line);
563: } else if (strcasecmp(attrib, "address") == 0) {
1.181 djm 564: switch (addr_match_list(address, arg)) {
565: case 1:
566: debug("connection from %.100s matched 'Address "
567: "%.100s' at line %d", address, arg, line);
568: break;
569: case 0:
1.183 djm 570: case -1:
1.153 dtucker 571: result = 0;
1.181 djm 572: break;
1.183 djm 573: case -2:
1.181 djm 574: return -1;
1.153 dtucker 575: }
576: } else {
577: error("Unsupported Match attribute %s", attrib);
578: return -1;
579: }
580: }
581: if (user != NULL)
582: debug3("match %sfound", result ? "" : "not ");
583: *condition = cp;
584: return result;
585: }
586:
1.158 dtucker 587: #define WHITESPACE " \t\r\n"
588:
1.94 markus 589: int
590: process_server_config_line(ServerOptions *options, char *line,
1.153 dtucker 591: const char *filename, int linenum, int *activep, const char *user,
592: const char *host, const char *address)
1.1 deraadt 593: {
1.74 stevesk 594: char *cp, **charptr, *arg, *p;
1.153 dtucker 595: int cmdline = 0, *intptr, value, n;
1.174 dtucker 596: SyslogFacility *log_facility_ptr;
597: LogLevel *log_level_ptr;
1.25 markus 598: ServerOpCodes opcode;
1.139 djm 599: u_short port;
1.153 dtucker 600: u_int i, flags = 0;
1.151 djm 601: size_t len;
1.25 markus 602:
1.94 markus 603: cp = line;
1.148 dtucker 604: if ((arg = strdelim(&cp)) == NULL)
1.147 djm 605: return 0;
1.94 markus 606: /* Ignore leading whitespace */
607: if (*arg == '\0')
608: arg = strdelim(&cp);
609: if (!arg || !*arg || *arg == '#')
610: return 0;
611: intptr = NULL;
612: charptr = NULL;
1.153 dtucker 613: opcode = parse_token(arg, filename, linenum, &flags);
614:
615: if (activep == NULL) { /* We are processing a command line directive */
616: cmdline = 1;
617: activep = &cmdline;
618: }
619: if (*activep && opcode != sMatch)
620: debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
621: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
622: if (user == NULL) {
623: fatal("%s line %d: Directive '%s' is not allowed "
624: "within a Match block", filename, linenum, arg);
625: } else { /* this is a directive we have already processed */
626: while (arg)
627: arg = strdelim(&cp);
628: return 0;
629: }
630: }
631:
1.94 markus 632: switch (opcode) {
633: case sBadOption:
634: return -1;
635: case sPort:
636: /* ignore ports from configfile if cmdline specifies ports */
637: if (options->ports_from_cmdline)
638: return 0;
639: if (options->listen_addrs != NULL)
640: fatal("%s line %d: ports must be specified before "
1.98 stevesk 641: "ListenAddress.", filename, linenum);
1.94 markus 642: if (options->num_ports >= MAX_PORTS)
643: fatal("%s line %d: too many ports.",
644: filename, linenum);
1.48 provos 645: arg = strdelim(&cp);
1.94 markus 646: if (!arg || *arg == '\0')
647: fatal("%s line %d: missing port number.",
648: filename, linenum);
649: options->ports[options->num_ports++] = a2port(arg);
650: if (options->ports[options->num_ports-1] == 0)
651: fatal("%s line %d: Badly formatted port number.",
652: filename, linenum);
653: break;
1.29 markus 654:
1.94 markus 655: case sServerKeyBits:
656: intptr = &options->server_key_bits;
1.180 djm 657: parse_int:
1.94 markus 658: arg = strdelim(&cp);
659: if (!arg || *arg == '\0')
660: fatal("%s line %d: missing integer value.",
661: filename, linenum);
662: value = atoi(arg);
1.153 dtucker 663: if (*activep && *intptr == -1)
1.94 markus 664: *intptr = value;
665: break;
1.25 markus 666:
1.94 markus 667: case sLoginGraceTime:
668: intptr = &options->login_grace_time;
1.180 djm 669: parse_time:
1.94 markus 670: arg = strdelim(&cp);
671: if (!arg || *arg == '\0')
672: fatal("%s line %d: missing time value.",
673: filename, linenum);
674: if ((value = convtime(arg)) == -1)
675: fatal("%s line %d: invalid time value.",
676: filename, linenum);
677: if (*intptr == -1)
678: *intptr = value;
679: break;
680:
681: case sKeyRegenerationTime:
682: intptr = &options->key_regeneration_time;
683: goto parse_time;
684:
685: case sListenAddress:
686: arg = strdelim(&cp);
1.139 djm 687: if (arg == NULL || *arg == '\0')
688: fatal("%s line %d: missing address",
1.94 markus 689: filename, linenum);
1.144 dtucker 690: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
691: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
692: && strchr(p+1, ':') != NULL) {
693: add_listen_addr(options, arg, 0);
694: break;
695: }
1.139 djm 696: p = hpdelim(&arg);
697: if (p == NULL)
698: fatal("%s line %d: bad address:port usage",
699: filename, linenum);
700: p = cleanhostname(p);
701: if (arg == NULL)
702: port = 0;
703: else if ((port = a2port(arg)) == 0)
704: fatal("%s line %d: bad port number", filename, linenum);
705:
706: add_listen_addr(options, p, port);
1.25 markus 707:
1.138 djm 708: break;
709:
710: case sAddressFamily:
711: arg = strdelim(&cp);
1.141 markus 712: if (!arg || *arg == '\0')
713: fatal("%s line %d: missing address family.",
714: filename, linenum);
1.138 djm 715: intptr = &options->address_family;
716: if (options->listen_addrs != NULL)
717: fatal("%s line %d: address family must be specified before "
718: "ListenAddress.", filename, linenum);
719: if (strcasecmp(arg, "inet") == 0)
720: value = AF_INET;
721: else if (strcasecmp(arg, "inet6") == 0)
722: value = AF_INET6;
723: else if (strcasecmp(arg, "any") == 0)
724: value = AF_UNSPEC;
725: else
726: fatal("%s line %d: unsupported address family \"%s\".",
727: filename, linenum, arg);
728: if (*intptr == -1)
729: *intptr = value;
1.94 markus 730: break;
731:
732: case sHostKeyFile:
733: intptr = &options->num_host_key_files;
734: if (*intptr >= MAX_HOSTKEYS)
735: fatal("%s line %d: too many host keys specified (max %d).",
736: filename, linenum, MAX_HOSTKEYS);
737: charptr = &options->host_key_files[*intptr];
1.180 djm 738: parse_filename:
1.94 markus 739: arg = strdelim(&cp);
740: if (!arg || *arg == '\0')
741: fatal("%s line %d: missing file name.",
742: filename, linenum);
1.153 dtucker 743: if (*activep && *charptr == NULL) {
1.94 markus 744: *charptr = tilde_expand_filename(arg, getuid());
745: /* increase optional counter */
746: if (intptr != NULL)
747: *intptr = *intptr + 1;
748: }
749: break;
1.76 stevesk 750:
1.94 markus 751: case sPidFile:
752: charptr = &options->pid_file;
753: goto parse_filename;
1.25 markus 754:
1.94 markus 755: case sPermitRootLogin:
756: intptr = &options->permit_root_login;
757: arg = strdelim(&cp);
758: if (!arg || *arg == '\0')
759: fatal("%s line %d: missing yes/"
760: "without-password/forced-commands-only/no "
761: "argument.", filename, linenum);
762: value = 0; /* silence compiler */
763: if (strcmp(arg, "without-password") == 0)
764: value = PERMIT_NO_PASSWD;
765: else if (strcmp(arg, "forced-commands-only") == 0)
766: value = PERMIT_FORCED_ONLY;
767: else if (strcmp(arg, "yes") == 0)
768: value = PERMIT_YES;
769: else if (strcmp(arg, "no") == 0)
770: value = PERMIT_NO;
771: else
772: fatal("%s line %d: Bad yes/"
773: "without-password/forced-commands-only/no "
774: "argument: %s", filename, linenum, arg);
1.175 dtucker 775: if (*activep && *intptr == -1)
1.94 markus 776: *intptr = value;
777: break;
1.36 markus 778:
1.94 markus 779: case sIgnoreRhosts:
780: intptr = &options->ignore_rhosts;
1.180 djm 781: parse_flag:
1.94 markus 782: arg = strdelim(&cp);
783: if (!arg || *arg == '\0')
784: fatal("%s line %d: missing yes/no argument.",
785: filename, linenum);
786: value = 0; /* silence compiler */
787: if (strcmp(arg, "yes") == 0)
788: value = 1;
789: else if (strcmp(arg, "no") == 0)
790: value = 0;
791: else
792: fatal("%s line %d: Bad yes/no argument: %s",
793: filename, linenum, arg);
1.153 dtucker 794: if (*activep && *intptr == -1)
1.94 markus 795: *intptr = value;
796: break;
797:
798: case sIgnoreUserKnownHosts:
799: intptr = &options->ignore_user_known_hosts;
800: goto parse_flag;
801:
802: case sRhostsRSAAuthentication:
803: intptr = &options->rhosts_rsa_authentication;
804: goto parse_flag;
805:
806: case sHostbasedAuthentication:
807: intptr = &options->hostbased_authentication;
808: goto parse_flag;
809:
810: case sHostbasedUsesNameFromPacketOnly:
811: intptr = &options->hostbased_uses_name_from_packet_only;
812: goto parse_flag;
813:
814: case sRSAAuthentication:
815: intptr = &options->rsa_authentication;
816: goto parse_flag;
817:
818: case sPubkeyAuthentication:
819: intptr = &options->pubkey_authentication;
820: goto parse_flag;
1.119 jakob 821:
1.94 markus 822: case sKerberosAuthentication:
823: intptr = &options->kerberos_authentication;
824: goto parse_flag;
825:
826: case sKerberosOrLocalPasswd:
827: intptr = &options->kerberos_or_local_passwd;
828: goto parse_flag;
829:
830: case sKerberosTicketCleanup:
831: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 832: goto parse_flag;
833:
834: case sKerberosGetAFSToken:
835: intptr = &options->kerberos_get_afs_token;
1.125 markus 836: goto parse_flag;
837:
838: case sGssAuthentication:
839: intptr = &options->gss_authentication;
840: goto parse_flag;
841:
842: case sGssCleanupCreds:
843: intptr = &options->gss_cleanup_creds;
1.94 markus 844: goto parse_flag;
845:
846: case sPasswordAuthentication:
847: intptr = &options->password_authentication;
848: goto parse_flag;
849:
850: case sKbdInteractiveAuthentication:
851: intptr = &options->kbd_interactive_authentication;
852: goto parse_flag;
853:
854: case sChallengeResponseAuthentication:
855: intptr = &options->challenge_response_authentication;
856: goto parse_flag;
857:
858: case sPrintMotd:
859: intptr = &options->print_motd;
860: goto parse_flag;
861:
862: case sPrintLastLog:
863: intptr = &options->print_lastlog;
864: goto parse_flag;
865:
866: case sX11Forwarding:
867: intptr = &options->x11_forwarding;
868: goto parse_flag;
869:
870: case sX11DisplayOffset:
871: intptr = &options->x11_display_offset;
872: goto parse_int;
1.99 stevesk 873:
874: case sX11UseLocalhost:
875: intptr = &options->x11_use_localhost;
876: goto parse_flag;
1.94 markus 877:
878: case sXAuthLocation:
879: charptr = &options->xauth_location;
880: goto parse_filename;
881:
882: case sStrictModes:
883: intptr = &options->strict_modes;
884: goto parse_flag;
885:
1.129 markus 886: case sTCPKeepAlive:
887: intptr = &options->tcp_keep_alive;
1.94 markus 888: goto parse_flag;
889:
890: case sEmptyPasswd:
891: intptr = &options->permit_empty_passwd;
1.113 markus 892: goto parse_flag;
893:
894: case sPermitUserEnvironment:
895: intptr = &options->permit_user_env;
1.94 markus 896: goto parse_flag;
897:
898: case sUseLogin:
899: intptr = &options->use_login;
1.111 markus 900: goto parse_flag;
901:
902: case sCompression:
903: intptr = &options->compression;
1.143 markus 904: arg = strdelim(&cp);
905: if (!arg || *arg == '\0')
906: fatal("%s line %d: missing yes/no/delayed "
907: "argument.", filename, linenum);
908: value = 0; /* silence compiler */
909: if (strcmp(arg, "delayed") == 0)
910: value = COMP_DELAYED;
911: else if (strcmp(arg, "yes") == 0)
912: value = COMP_ZLIB;
913: else if (strcmp(arg, "no") == 0)
914: value = COMP_NONE;
915: else
916: fatal("%s line %d: Bad yes/no/delayed "
917: "argument: %s", filename, linenum, arg);
918: if (*intptr == -1)
919: *intptr = value;
920: break;
1.94 markus 921:
922: case sGatewayPorts:
923: intptr = &options->gateway_ports;
1.139 djm 924: arg = strdelim(&cp);
925: if (!arg || *arg == '\0')
926: fatal("%s line %d: missing yes/no/clientspecified "
927: "argument.", filename, linenum);
928: value = 0; /* silence compiler */
929: if (strcmp(arg, "clientspecified") == 0)
930: value = 2;
931: else if (strcmp(arg, "yes") == 0)
932: value = 1;
933: else if (strcmp(arg, "no") == 0)
934: value = 0;
935: else
936: fatal("%s line %d: Bad yes/no/clientspecified "
937: "argument: %s", filename, linenum, arg);
1.169 dtucker 938: if (*activep && *intptr == -1)
1.139 djm 939: *intptr = value;
940: break;
1.25 markus 941:
1.122 markus 942: case sUseDNS:
943: intptr = &options->use_dns;
1.94 markus 944: goto parse_flag;
1.53 markus 945:
1.94 markus 946: case sLogFacility:
1.174 dtucker 947: log_facility_ptr = &options->log_facility;
1.94 markus 948: arg = strdelim(&cp);
949: value = log_facility_number(arg);
1.101 markus 950: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 951: fatal("%.200s line %d: unsupported log facility '%s'",
952: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 953: if (*log_facility_ptr == -1)
954: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 955: break;
1.25 markus 956:
1.94 markus 957: case sLogLevel:
1.174 dtucker 958: log_level_ptr = &options->log_level;
1.94 markus 959: arg = strdelim(&cp);
960: value = log_level_number(arg);
1.101 markus 961: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 962: fatal("%.200s line %d: unsupported log level '%s'",
963: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 964: if (*log_level_ptr == -1)
965: *log_level_ptr = (LogLevel) value;
1.94 markus 966: break;
967:
968: case sAllowTcpForwarding:
969: intptr = &options->allow_tcp_forwarding;
970: goto parse_flag;
1.102 provos 971:
1.178 pyr 972: case sAllowAgentForwarding:
973: intptr = &options->allow_agent_forwarding;
974: goto parse_flag;
975:
1.102 provos 976: case sUsePrivilegeSeparation:
977: intptr = &use_privsep;
978: goto parse_flag;
1.94 markus 979:
980: case sAllowUsers:
981: while ((arg = strdelim(&cp)) && *arg != '\0') {
982: if (options->num_allow_users >= MAX_ALLOW_USERS)
983: fatal("%s line %d: too many allow users.",
984: filename, linenum);
1.112 deraadt 985: options->allow_users[options->num_allow_users++] =
986: xstrdup(arg);
1.94 markus 987: }
988: break;
1.25 markus 989:
1.94 markus 990: case sDenyUsers:
991: while ((arg = strdelim(&cp)) && *arg != '\0') {
992: if (options->num_deny_users >= MAX_DENY_USERS)
1.163 stevesk 993: fatal("%s line %d: too many deny users.",
1.94 markus 994: filename, linenum);
1.112 deraadt 995: options->deny_users[options->num_deny_users++] =
996: xstrdup(arg);
1.94 markus 997: }
998: break;
1.25 markus 999:
1.94 markus 1000: case sAllowGroups:
1001: while ((arg = strdelim(&cp)) && *arg != '\0') {
1002: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1003: fatal("%s line %d: too many allow groups.",
1004: filename, linenum);
1.112 deraadt 1005: options->allow_groups[options->num_allow_groups++] =
1006: xstrdup(arg);
1.94 markus 1007: }
1008: break;
1.33 markus 1009:
1.94 markus 1010: case sDenyGroups:
1011: while ((arg = strdelim(&cp)) && *arg != '\0') {
1012: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1013: fatal("%s line %d: too many deny groups.",
1014: filename, linenum);
1015: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1016: }
1017: break;
1.66 markus 1018:
1.94 markus 1019: case sCiphers:
1020: arg = strdelim(&cp);
1021: if (!arg || *arg == '\0')
1022: fatal("%s line %d: Missing argument.", filename, linenum);
1023: if (!ciphers_valid(arg))
1024: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1025: filename, linenum, arg ? arg : "<NONE>");
1026: if (options->ciphers == NULL)
1027: options->ciphers = xstrdup(arg);
1028: break;
1.33 markus 1029:
1.94 markus 1030: case sMacs:
1031: arg = strdelim(&cp);
1032: if (!arg || *arg == '\0')
1033: fatal("%s line %d: Missing argument.", filename, linenum);
1034: if (!mac_valid(arg))
1035: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1036: filename, linenum, arg ? arg : "<NONE>");
1037: if (options->macs == NULL)
1038: options->macs = xstrdup(arg);
1039: break;
1.43 jakob 1040:
1.94 markus 1041: case sProtocol:
1042: intptr = &options->protocol;
1043: arg = strdelim(&cp);
1044: if (!arg || *arg == '\0')
1045: fatal("%s line %d: Missing argument.", filename, linenum);
1046: value = proto_spec(arg);
1047: if (value == SSH_PROTO_UNKNOWN)
1048: fatal("%s line %d: Bad protocol spec '%s'.",
1.95 deraadt 1049: filename, linenum, arg ? arg : "<NONE>");
1.94 markus 1050: if (*intptr == SSH_PROTO_UNKNOWN)
1051: *intptr = value;
1052: break;
1053:
1054: case sSubsystem:
1055: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1056: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1057: filename, linenum);
1.94 markus 1058: }
1059: arg = strdelim(&cp);
1060: if (!arg || *arg == '\0')
1061: fatal("%s line %d: Missing subsystem name.",
1.95 deraadt 1062: filename, linenum);
1.153 dtucker 1063: if (!*activep) {
1064: arg = strdelim(&cp);
1065: break;
1066: }
1.94 markus 1067: for (i = 0; i < options->num_subsystems; i++)
1068: if (strcmp(arg, options->subsystem_name[i]) == 0)
1069: fatal("%s line %d: Subsystem '%s' already defined.",
1.95 deraadt 1070: filename, linenum, arg);
1.94 markus 1071: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1072: arg = strdelim(&cp);
1073: if (!arg || *arg == '\0')
1074: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1075: filename, linenum);
1.94 markus 1076: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1077:
1078: /* Collect arguments (separate to executable) */
1079: p = xstrdup(arg);
1080: len = strlen(p) + 1;
1081: while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1082: len += 1 + strlen(arg);
1083: p = xrealloc(p, 1, len);
1084: strlcat(p, " ", len);
1085: strlcat(p, arg, len);
1086: }
1087: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1088: options->num_subsystems++;
1089: break;
1.46 markus 1090:
1.94 markus 1091: case sMaxStartups:
1092: arg = strdelim(&cp);
1093: if (!arg || *arg == '\0')
1094: fatal("%s line %d: Missing MaxStartups spec.",
1.95 deraadt 1095: filename, linenum);
1.94 markus 1096: if ((n = sscanf(arg, "%d:%d:%d",
1097: &options->max_startups_begin,
1098: &options->max_startups_rate,
1099: &options->max_startups)) == 3) {
1100: if (options->max_startups_begin >
1101: options->max_startups ||
1102: options->max_startups_rate > 100 ||
1103: options->max_startups_rate < 1)
1.50 markus 1104: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 1105: filename, linenum);
1.94 markus 1106: } else if (n != 1)
1107: fatal("%s line %d: Illegal MaxStartups spec.",
1108: filename, linenum);
1109: else
1110: options->max_startups = options->max_startups_begin;
1111: break;
1.133 dtucker 1112:
1113: case sMaxAuthTries:
1114: intptr = &options->max_authtries;
1115: goto parse_int;
1.94 markus 1116:
1.180 djm 1117: case sMaxSessions:
1118: intptr = &options->max_sessions;
1119: goto parse_int;
1120:
1.94 markus 1121: case sBanner:
1122: charptr = &options->banner;
1123: goto parse_filename;
1.176 djm 1124:
1.94 markus 1125: /*
1126: * These options can contain %X options expanded at
1127: * connect time, so that you can specify paths like:
1128: *
1129: * AuthorizedKeysFile /etc/ssh_keys/%u
1130: */
1131: case sAuthorizedKeysFile:
1132: case sAuthorizedKeysFile2:
1.163 stevesk 1133: charptr = (opcode == sAuthorizedKeysFile) ?
1.94 markus 1134: &options->authorized_keys_file :
1135: &options->authorized_keys_file2;
1136: goto parse_filename;
1137:
1138: case sClientAliveInterval:
1139: intptr = &options->client_alive_interval;
1140: goto parse_time;
1141:
1142: case sClientAliveCountMax:
1143: intptr = &options->client_alive_count_max;
1144: goto parse_int;
1.131 djm 1145:
1146: case sAcceptEnv:
1147: while ((arg = strdelim(&cp)) && *arg != '\0') {
1148: if (strchr(arg, '=') != NULL)
1149: fatal("%s line %d: Invalid environment name.",
1150: filename, linenum);
1151: if (options->num_accept_env >= MAX_ACCEPT_ENV)
1152: fatal("%s line %d: too many allow env.",
1153: filename, linenum);
1.153 dtucker 1154: if (!*activep)
1155: break;
1.131 djm 1156: options->accept_env[options->num_accept_env++] =
1157: xstrdup(arg);
1158: }
1159: break;
1.145 reyk 1160:
1161: case sPermitTunnel:
1162: intptr = &options->permit_tun;
1.146 reyk 1163: arg = strdelim(&cp);
1164: if (!arg || *arg == '\0')
1165: fatal("%s line %d: Missing yes/point-to-point/"
1166: "ethernet/no argument.", filename, linenum);
1.182 dtucker 1167: value = -1;
1168: for (i = 0; tunmode_desc[i].val != -1; i++)
1169: if (strcmp(tunmode_desc[i].text, arg) == 0) {
1170: value = tunmode_desc[i].val;
1171: break;
1172: }
1173: if (value == -1)
1.146 reyk 1174: fatal("%s line %d: Bad yes/point-to-point/ethernet/"
1175: "no argument: %s", filename, linenum, arg);
1176: if (*intptr == -1)
1177: *intptr = value;
1178: break;
1.94 markus 1179:
1.153 dtucker 1180: case sMatch:
1181: if (cmdline)
1182: fatal("Match directive not supported as a command-line "
1183: "option");
1184: value = match_cfg_line(&cp, linenum, user, host, address);
1185: if (value < 0)
1186: fatal("%s line %d: Bad Match condition", filename,
1187: linenum);
1188: *activep = value;
1.156 dtucker 1189: break;
1190:
1191: case sPermitOpen:
1192: arg = strdelim(&cp);
1193: if (!arg || *arg == '\0')
1194: fatal("%s line %d: missing PermitOpen specification",
1195: filename, linenum);
1.167 dtucker 1196: n = options->num_permitted_opens; /* modified later */
1.156 dtucker 1197: if (strcmp(arg, "any") == 0) {
1.167 dtucker 1198: if (*activep && n == -1) {
1.156 dtucker 1199: channel_clear_adm_permitted_opens();
1.159 dtucker 1200: options->num_permitted_opens = 0;
1201: }
1.156 dtucker 1202: break;
1203: }
1.166 dtucker 1204: if (*activep && n == -1)
1205: channel_clear_adm_permitted_opens();
1.159 dtucker 1206: for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
1207: p = hpdelim(&arg);
1208: if (p == NULL)
1209: fatal("%s line %d: missing host in PermitOpen",
1210: filename, linenum);
1211: p = cleanhostname(p);
1212: if (arg == NULL || (port = a2port(arg)) == 0)
1213: fatal("%s line %d: bad port number in "
1214: "PermitOpen", filename, linenum);
1.166 dtucker 1215: if (*activep && n == -1)
1.159 dtucker 1216: options->num_permitted_opens =
1217: channel_add_adm_permitted_opens(p, port);
1218: }
1.153 dtucker 1219: break;
1220:
1.158 dtucker 1221: case sForceCommand:
1222: if (cp == NULL)
1223: fatal("%.200s line %d: Missing argument.", filename,
1224: linenum);
1225: len = strspn(cp, WHITESPACE);
1226: if (*activep && options->adm_forced_command == NULL)
1227: options->adm_forced_command = xstrdup(cp + len);
1228: return 0;
1229:
1.176 djm 1230: case sChrootDirectory:
1231: charptr = &options->chroot_directory;
1.177 djm 1232:
1233: arg = strdelim(&cp);
1234: if (!arg || *arg == '\0')
1235: fatal("%s line %d: missing file name.",
1236: filename, linenum);
1237: if (*activep && *charptr == NULL)
1238: *charptr = xstrdup(arg);
1239: break;
1.176 djm 1240:
1.94 markus 1241: case sDeprecated:
1.117 itojun 1242: logit("%s line %d: Deprecated option %s",
1.121 jakob 1243: filename, linenum, arg);
1244: while (arg)
1245: arg = strdelim(&cp);
1246: break;
1247:
1248: case sUnsupported:
1249: logit("%s line %d: Unsupported option %s",
1.94 markus 1250: filename, linenum, arg);
1251: while (arg)
1252: arg = strdelim(&cp);
1253: break;
1254:
1255: default:
1256: fatal("%s line %d: Missing handler for opcode %s (%d)",
1257: filename, linenum, arg, opcode);
1258: }
1259: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
1260: fatal("%s line %d: garbage at end of line; \"%.200s\".",
1261: filename, linenum, arg);
1262: return 0;
1263: }
1264:
1265: /* Reads the server configuration file. */
1.25 markus 1266:
1.94 markus 1267: void
1.134 djm 1268: load_server_config(const char *filename, Buffer *conf)
1.94 markus 1269: {
1.134 djm 1270: char line[1024], *cp;
1.94 markus 1271: FILE *f;
1.81 stevesk 1272:
1.134 djm 1273: debug2("%s: filename %s", __func__, filename);
1274: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 1275: perror(filename);
1276: exit(1);
1277: }
1.134 djm 1278: buffer_clear(conf);
1279: while (fgets(line, sizeof(line), f)) {
1280: /*
1281: * Trim out comments and strip whitespace
1.135 deraadt 1282: * NB - preserve newlines, they are needed to reproduce
1.134 djm 1283: * line numbers later for error messages
1284: */
1285: if ((cp = strchr(line, '#')) != NULL)
1286: memcpy(cp, "\n", 2);
1287: cp = line + strspn(line, " \t\r");
1288:
1289: buffer_append(conf, cp, strlen(cp));
1290: }
1291: buffer_append(conf, "\0", 1);
1292: fclose(f);
1293: debug2("%s: done config len = %d", __func__, buffer_len(conf));
1294: }
1295:
1296: void
1.153 dtucker 1297: parse_server_match_config(ServerOptions *options, const char *user,
1298: const char *host, const char *address)
1299: {
1300: ServerOptions mo;
1301:
1302: initialize_server_options(&mo);
1303: parse_server_config(&mo, "reprocess config", &cfg, user, host, address);
1.168 dtucker 1304: copy_set_server_options(options, &mo, 0);
1.153 dtucker 1305: }
1306:
1.168 dtucker 1307: /* Helper macros */
1308: #define M_CP_INTOPT(n) do {\
1309: if (src->n != -1) \
1310: dst->n = src->n; \
1311: } while (0)
1312: #define M_CP_STROPT(n) do {\
1313: if (src->n != NULL) { \
1314: if (dst->n != NULL) \
1315: xfree(dst->n); \
1316: dst->n = src->n; \
1317: } \
1318: } while(0)
1319:
1320: /*
1321: * Copy any supported values that are set.
1322: *
1323: * If the preauth flag is set, we do not bother copying the the string or
1324: * array values that are not used pre-authentication, because any that we
1325: * do use must be explictly sent in mm_getpwnamallow().
1326: */
1.153 dtucker 1327: void
1.168 dtucker 1328: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 1329: {
1.168 dtucker 1330: M_CP_INTOPT(password_authentication);
1331: M_CP_INTOPT(gss_authentication);
1332: M_CP_INTOPT(rsa_authentication);
1333: M_CP_INTOPT(pubkey_authentication);
1334: M_CP_INTOPT(kerberos_authentication);
1335: M_CP_INTOPT(hostbased_authentication);
1336: M_CP_INTOPT(kbd_interactive_authentication);
1.175 dtucker 1337: M_CP_INTOPT(permit_root_login);
1.188 djm 1338: M_CP_INTOPT(permit_empty_passwd);
1.168 dtucker 1339:
1340: M_CP_INTOPT(allow_tcp_forwarding);
1.178 pyr 1341: M_CP_INTOPT(allow_agent_forwarding);
1.168 dtucker 1342: M_CP_INTOPT(gateway_ports);
1343: M_CP_INTOPT(x11_display_offset);
1344: M_CP_INTOPT(x11_forwarding);
1345: M_CP_INTOPT(x11_use_localhost);
1.180 djm 1346: M_CP_INTOPT(max_sessions);
1.184 dtucker 1347: M_CP_INTOPT(max_authtries);
1.168 dtucker 1348:
1349: M_CP_STROPT(banner);
1350: if (preauth)
1351: return;
1352: M_CP_STROPT(adm_forced_command);
1.176 djm 1353: M_CP_STROPT(chroot_directory);
1.153 dtucker 1354: }
1.168 dtucker 1355:
1356: #undef M_CP_INTOPT
1357: #undef M_CP_STROPT
1.153 dtucker 1358:
1359: void
1360: parse_server_config(ServerOptions *options, const char *filename, Buffer *conf,
1361: const char *user, const char *host, const char *address)
1.134 djm 1362: {
1.153 dtucker 1363: int active, linenum, bad_options = 0;
1.136 dtucker 1364: char *cp, *obuf, *cbuf;
1.134 djm 1365:
1366: debug2("%s: config %s len %d", __func__, filename, buffer_len(conf));
1367:
1.136 dtucker 1368: obuf = cbuf = xstrdup(buffer_ptr(conf));
1.153 dtucker 1369: active = user ? 0 : 1;
1.137 dtucker 1370: linenum = 1;
1.140 deraadt 1371: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.134 djm 1372: if (process_server_config_line(options, cp, filename,
1.153 dtucker 1373: linenum++, &active, user, host, address) != 0)
1.94 markus 1374: bad_options++;
1.1 deraadt 1375: }
1.136 dtucker 1376: xfree(obuf);
1.78 stevesk 1377: if (bad_options > 0)
1378: fatal("%s: terminating, %d bad configuration options",
1379: filename, bad_options);
1.182 dtucker 1380: }
1381:
1382: static const char *
1383: fmt_intarg(ServerOpCodes code, int val)
1384: {
1385: if (code == sAddressFamily) {
1386: switch (val) {
1387: case AF_INET:
1388: return "inet";
1389: case AF_INET6:
1390: return "inet6";
1391: case AF_UNSPEC:
1392: return "any";
1393: default:
1394: return "UNKNOWN";
1395: }
1396: }
1397: if (code == sPermitRootLogin) {
1398: switch (val) {
1399: case PERMIT_NO_PASSWD:
1400: return "without-passord";
1401: case PERMIT_FORCED_ONLY:
1402: return "forced-commands-only";
1403: case PERMIT_YES:
1404: return "yes";
1405: }
1406: }
1407: if (code == sProtocol) {
1408: switch (val) {
1409: case SSH_PROTO_1:
1410: return "1";
1411: case SSH_PROTO_2:
1412: return "2";
1413: case (SSH_PROTO_1|SSH_PROTO_2):
1414: return "2,1";
1415: default:
1416: return "UNKNOWN";
1417: }
1418: }
1419: if (code == sGatewayPorts && val == 2)
1420: return "clientspecified";
1421: if (code == sCompression && val == COMP_DELAYED)
1422: return "delayed";
1423: switch (val) {
1424: case -1:
1425: return "unset";
1426: case 0:
1427: return "no";
1428: case 1:
1429: return "yes";
1430: }
1431: return "UNKNOWN";
1432: }
1433:
1434: static const char *
1435: lookup_opcode_name(ServerOpCodes code)
1436: {
1437: u_int i;
1438:
1439: for (i = 0; keywords[i].name != NULL; i++)
1440: if (keywords[i].opcode == code)
1441: return(keywords[i].name);
1442: return "UNKNOWN";
1443: }
1444:
1445: static void
1446: dump_cfg_int(ServerOpCodes code, int val)
1447: {
1448: printf("%s %d\n", lookup_opcode_name(code), val);
1449: }
1450:
1451: static void
1452: dump_cfg_fmtint(ServerOpCodes code, int val)
1453: {
1454: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
1455: }
1456:
1457: static void
1458: dump_cfg_string(ServerOpCodes code, const char *val)
1459: {
1460: if (val == NULL)
1461: return;
1462: printf("%s %s\n", lookup_opcode_name(code), val);
1463: }
1464:
1465: static void
1466: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
1467: {
1468: u_int i;
1469:
1470: for (i = 0; i < count; i++)
1471: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
1472: }
1473:
1474: void
1475: dump_config(ServerOptions *o)
1476: {
1477: u_int i;
1478: int ret;
1479: struct addrinfo *ai;
1480: char addr[NI_MAXHOST], port[NI_MAXSERV], *s = NULL;
1481:
1482: /* these are usually at the top of the config */
1483: for (i = 0; i < o->num_ports; i++)
1484: printf("port %d\n", o->ports[i]);
1485: dump_cfg_fmtint(sProtocol, o->protocol);
1486: dump_cfg_fmtint(sAddressFamily, o->address_family);
1487:
1488: /* ListenAddress must be after Port */
1489: for (ai = o->listen_addrs; ai; ai = ai->ai_next) {
1490: if ((ret = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1491: sizeof(addr), port, sizeof(port),
1492: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1493: error("getnameinfo failed: %.100s",
1494: (ret != EAI_SYSTEM) ? gai_strerror(ret) :
1495: strerror(errno));
1496: } else {
1497: if (ai->ai_family == AF_INET6)
1498: printf("listenaddress [%s]:%s\n", addr, port);
1499: else
1500: printf("listenaddress %s:%s\n", addr, port);
1501: }
1502: }
1503:
1504: /* integer arguments */
1505: dump_cfg_int(sServerKeyBits, o->server_key_bits);
1506: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
1507: dump_cfg_int(sKeyRegenerationTime, o->key_regeneration_time);
1508: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
1509: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1.189 ! djm 1510: dump_cfg_int(sMaxSessions, o->max_sessions);
1.182 dtucker 1511: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
1512: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1513:
1514: /* formatted integer arguments */
1515: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
1516: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
1517: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
1518: dump_cfg_fmtint(sRhostsRSAAuthentication, o->rhosts_rsa_authentication);
1519: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
1520: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
1521: o->hostbased_uses_name_from_packet_only);
1522: dump_cfg_fmtint(sRSAAuthentication, o->rsa_authentication);
1523: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1.187 djm 1524: #ifdef KRB5
1.182 dtucker 1525: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
1526: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
1527: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
1.187 djm 1528: # ifdef USE_AFS
1.182 dtucker 1529: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1.187 djm 1530: # endif
1531: #endif
1532: #ifdef GSSAPI
1.182 dtucker 1533: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
1534: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1.187 djm 1535: #endif
1.182 dtucker 1536: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
1537: dump_cfg_fmtint(sKbdInteractiveAuthentication,
1538: o->kbd_interactive_authentication);
1539: dump_cfg_fmtint(sChallengeResponseAuthentication,
1540: o->challenge_response_authentication);
1541: dump_cfg_fmtint(sPrintMotd, o->print_motd);
1542: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
1543: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
1544: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1545: dump_cfg_fmtint(sStrictModes, o->strict_modes);
1546: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
1547: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
1548: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
1549: dump_cfg_fmtint(sUseLogin, o->use_login);
1550: dump_cfg_fmtint(sCompression, o->compression);
1551: dump_cfg_fmtint(sGatewayPorts, o->gateway_ports);
1552: dump_cfg_fmtint(sUseDNS, o->use_dns);
1553: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1554: dump_cfg_fmtint(sUsePrivilegeSeparation, use_privsep);
1555:
1556: /* string arguments */
1557: dump_cfg_string(sPidFile, o->pid_file);
1558: dump_cfg_string(sXAuthLocation, o->xauth_location);
1559: dump_cfg_string(sCiphers, o->ciphers);
1560: dump_cfg_string(sMacs, o->macs);
1561: dump_cfg_string(sBanner, o->banner);
1562: dump_cfg_string(sAuthorizedKeysFile, o->authorized_keys_file);
1563: dump_cfg_string(sAuthorizedKeysFile2, o->authorized_keys_file2);
1564: dump_cfg_string(sForceCommand, o->adm_forced_command);
1565:
1566: /* string arguments requiring a lookup */
1567: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
1568: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
1569:
1570: /* string array arguments */
1571: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
1572: o->host_key_files);
1573: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
1574: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
1575: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
1576: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
1577: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1578:
1579: /* other arguments */
1580: for (i = 0; i < o->num_subsystems; i++)
1581: printf("subsystem %s %s\n", o->subsystem_name[i],
1582: o->subsystem_args[i]);
1583:
1584: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
1585: o->max_startups_rate, o->max_startups);
1586:
1587: for (i = 0; tunmode_desc[i].val != -1; i++)
1588: if (tunmode_desc[i].val == o->permit_tun) {
1589: s = tunmode_desc[i].text;
1590: break;
1591: }
1592: dump_cfg_string(sPermitTunnel, s);
1593:
1594: printf("permitopen");
1595: channel_print_adm_permitted_opens();
1596: printf("\n");
1.1 deraadt 1597: }
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