Annotation of src/usr.bin/ssh/servconf.c, Revision 1.216
1.216 ! djm 1: /* $OpenBSD: servconf.c,v 1.215 2011/05/11 04:47:06 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:
1.213 djm 17: #include <netinet/in.h>
18: #include <netinet/in_systm.h>
19: #include <netinet/ip.h>
20:
1.154 stevesk 21: #include <netdb.h>
1.165 dtucker 22: #include <pwd.h>
1.162 stevesk 23: #include <stdio.h>
1.161 stevesk 24: #include <stdlib.h>
1.160 stevesk 25: #include <string.h>
1.164 deraadt 26: #include <signal.h>
1.155 stevesk 27: #include <unistd.h>
1.164 deraadt 28: #include <stdarg.h>
1.182 dtucker 29: #include <errno.h>
1.1 deraadt 30:
1.164 deraadt 31: #include "xmalloc.h"
1.1 deraadt 32: #include "ssh.h"
1.62 markus 33: #include "log.h"
1.164 deraadt 34: #include "buffer.h"
1.1 deraadt 35: #include "servconf.h"
1.33 markus 36: #include "compat.h"
1.60 markus 37: #include "pathnames.h"
1.62 markus 38: #include "misc.h"
39: #include "cipher.h"
1.164 deraadt 40: #include "key.h"
1.66 markus 41: #include "kex.h"
42: #include "mac.h"
1.153 dtucker 43: #include "match.h"
1.156 dtucker 44: #include "channels.h"
1.165 dtucker 45: #include "groupaccess.h"
1.1 deraadt 46:
1.194 djm 47: static void add_listen_addr(ServerOptions *, char *, int);
48: static void add_one_listen_addr(ServerOptions *, char *, int);
1.29 markus 49:
1.102 provos 50: /* Use of privilege separation or not */
51: extern int use_privsep;
1.153 dtucker 52: extern Buffer cfg;
1.62 markus 53:
1.1 deraadt 54: /* Initializes the server options to their default values. */
55:
1.34 markus 56: void
1.25 markus 57: initialize_server_options(ServerOptions *options)
1.1 deraadt 58: {
1.25 markus 59: memset(options, 0, sizeof(*options));
1.29 markus 60: options->num_ports = 0;
61: options->ports_from_cmdline = 0;
62: options->listen_addrs = NULL;
1.138 djm 63: options->address_family = -1;
1.54 markus 64: options->num_host_key_files = 0;
1.203 djm 65: options->num_host_cert_files = 0;
1.36 markus 66: options->pid_file = NULL;
1.25 markus 67: options->server_key_bits = -1;
68: options->login_grace_time = -1;
69: options->key_regeneration_time = -1;
1.67 markus 70: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 71: options->ignore_rhosts = -1;
72: options->ignore_user_known_hosts = -1;
73: options->print_motd = -1;
1.72 stevesk 74: options->print_lastlog = -1;
1.25 markus 75: options->x11_forwarding = -1;
76: options->x11_display_offset = -1;
1.99 stevesk 77: options->x11_use_localhost = -1;
1.42 markus 78: options->xauth_location = NULL;
1.25 markus 79: options->strict_modes = -1;
1.129 markus 80: options->tcp_keep_alive = -1;
1.101 markus 81: options->log_facility = SYSLOG_FACILITY_NOT_SET;
82: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.25 markus 83: options->rhosts_rsa_authentication = -1;
1.75 markus 84: options->hostbased_authentication = -1;
85: options->hostbased_uses_name_from_packet_only = -1;
1.25 markus 86: options->rsa_authentication = -1;
1.54 markus 87: options->pubkey_authentication = -1;
1.25 markus 88: options->kerberos_authentication = -1;
89: options->kerberos_or_local_passwd = -1;
90: options->kerberos_ticket_cleanup = -1;
1.130 jakob 91: options->kerberos_get_afs_token = -1;
1.125 markus 92: options->gss_authentication=-1;
93: options->gss_cleanup_creds = -1;
1.25 markus 94: options->password_authentication = -1;
1.52 markus 95: options->kbd_interactive_authentication = -1;
1.80 markus 96: options->challenge_response_authentication = -1;
1.25 markus 97: options->permit_empty_passwd = -1;
1.113 markus 98: options->permit_user_env = -1;
1.25 markus 99: options->use_login = -1;
1.111 markus 100: options->compression = -1;
1.53 markus 101: options->allow_tcp_forwarding = -1;
1.178 pyr 102: options->allow_agent_forwarding = -1;
1.25 markus 103: options->num_allow_users = 0;
104: options->num_deny_users = 0;
105: options->num_allow_groups = 0;
106: options->num_deny_groups = 0;
1.33 markus 107: options->ciphers = NULL;
1.66 markus 108: options->macs = NULL;
1.211 djm 109: options->kex_algorithms = NULL;
1.33 markus 110: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 111: options->gateway_ports = -1;
1.43 jakob 112: options->num_subsystems = 0;
1.50 markus 113: options->max_startups_begin = -1;
114: options->max_startups_rate = -1;
1.46 markus 115: options->max_startups = -1;
1.133 dtucker 116: options->max_authtries = -1;
1.180 djm 117: options->max_sessions = -1;
1.57 markus 118: options->banner = NULL;
1.122 markus 119: options->use_dns = -1;
1.77 beck 120: options->client_alive_interval = -1;
121: options->client_alive_count_max = -1;
1.82 markus 122: options->authorized_keys_file = NULL;
1.131 djm 123: options->num_accept_env = 0;
1.145 reyk 124: options->permit_tun = -1;
1.159 dtucker 125: options->num_permitted_opens = -1;
1.158 dtucker 126: options->adm_forced_command = NULL;
1.176 djm 127: options->chroot_directory = NULL;
1.190 djm 128: options->zero_knowledge_password_authentication = -1;
1.204 djm 129: options->revoked_keys_file = NULL;
130: options->trusted_user_ca_keys = NULL;
1.208 djm 131: options->authorized_principals_file = NULL;
1.213 djm 132: options->ip_qos_interactive = -1;
133: options->ip_qos_bulk = -1;
1.1 deraadt 134: }
135:
1.34 markus 136: void
1.25 markus 137: fill_default_server_options(ServerOptions *options)
1.1 deraadt 138: {
1.54 markus 139: if (options->protocol == SSH_PROTO_UNKNOWN)
1.196 markus 140: options->protocol = SSH_PROTO_2;
1.54 markus 141: if (options->num_host_key_files == 0) {
142: /* fill default hostkeys for protocols */
143: if (options->protocol & SSH_PROTO_1)
1.97 stevesk 144: options->host_key_files[options->num_host_key_files++] =
145: _PATH_HOST_KEY_FILE;
146: if (options->protocol & SSH_PROTO_2) {
147: options->host_key_files[options->num_host_key_files++] =
148: _PATH_HOST_RSA_KEY_FILE;
149: options->host_key_files[options->num_host_key_files++] =
150: _PATH_HOST_DSA_KEY_FILE;
1.210 naddy 151: options->host_key_files[options->num_host_key_files++] =
152: _PATH_HOST_ECDSA_KEY_FILE;
1.97 stevesk 153: }
1.54 markus 154: }
1.203 djm 155: /* No certificates by default */
1.29 markus 156: if (options->num_ports == 0)
157: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
158: if (options->listen_addrs == NULL)
1.76 stevesk 159: add_listen_addr(options, NULL, 0);
1.36 markus 160: if (options->pid_file == NULL)
1.60 markus 161: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 162: if (options->server_key_bits == -1)
1.185 djm 163: options->server_key_bits = 1024;
1.25 markus 164: if (options->login_grace_time == -1)
1.115 stevesk 165: options->login_grace_time = 120;
1.25 markus 166: if (options->key_regeneration_time == -1)
167: options->key_regeneration_time = 3600;
1.67 markus 168: if (options->permit_root_login == PERMIT_NOT_SET)
169: options->permit_root_login = PERMIT_YES;
1.25 markus 170: if (options->ignore_rhosts == -1)
1.30 markus 171: options->ignore_rhosts = 1;
1.25 markus 172: if (options->ignore_user_known_hosts == -1)
173: options->ignore_user_known_hosts = 0;
174: if (options->print_motd == -1)
175: options->print_motd = 1;
1.72 stevesk 176: if (options->print_lastlog == -1)
177: options->print_lastlog = 1;
1.25 markus 178: if (options->x11_forwarding == -1)
1.30 markus 179: options->x11_forwarding = 0;
1.25 markus 180: if (options->x11_display_offset == -1)
1.30 markus 181: options->x11_display_offset = 10;
1.99 stevesk 182: if (options->x11_use_localhost == -1)
183: options->x11_use_localhost = 1;
1.42 markus 184: if (options->xauth_location == NULL)
1.83 markus 185: options->xauth_location = _PATH_XAUTH;
1.25 markus 186: if (options->strict_modes == -1)
187: options->strict_modes = 1;
1.129 markus 188: if (options->tcp_keep_alive == -1)
189: options->tcp_keep_alive = 1;
1.101 markus 190: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
1.25 markus 191: options->log_facility = SYSLOG_FACILITY_AUTH;
1.101 markus 192: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.58 markus 193: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 194: if (options->rhosts_rsa_authentication == -1)
1.30 markus 195: options->rhosts_rsa_authentication = 0;
1.75 markus 196: if (options->hostbased_authentication == -1)
197: options->hostbased_authentication = 0;
198: if (options->hostbased_uses_name_from_packet_only == -1)
199: options->hostbased_uses_name_from_packet_only = 0;
1.25 markus 200: if (options->rsa_authentication == -1)
201: options->rsa_authentication = 1;
1.54 markus 202: if (options->pubkey_authentication == -1)
203: options->pubkey_authentication = 1;
1.25 markus 204: if (options->kerberos_authentication == -1)
1.107 markus 205: options->kerberos_authentication = 0;
1.25 markus 206: if (options->kerberos_or_local_passwd == -1)
207: options->kerberos_or_local_passwd = 1;
208: if (options->kerberos_ticket_cleanup == -1)
209: options->kerberos_ticket_cleanup = 1;
1.130 jakob 210: if (options->kerberos_get_afs_token == -1)
211: options->kerberos_get_afs_token = 0;
1.125 markus 212: if (options->gss_authentication == -1)
213: options->gss_authentication = 0;
214: if (options->gss_cleanup_creds == -1)
215: options->gss_cleanup_creds = 1;
1.25 markus 216: if (options->password_authentication == -1)
217: options->password_authentication = 1;
1.52 markus 218: if (options->kbd_interactive_authentication == -1)
219: options->kbd_interactive_authentication = 0;
1.80 markus 220: if (options->challenge_response_authentication == -1)
221: options->challenge_response_authentication = 1;
1.25 markus 222: if (options->permit_empty_passwd == -1)
1.30 markus 223: options->permit_empty_passwd = 0;
1.113 markus 224: if (options->permit_user_env == -1)
225: options->permit_user_env = 0;
1.25 markus 226: if (options->use_login == -1)
227: options->use_login = 0;
1.111 markus 228: if (options->compression == -1)
1.143 markus 229: options->compression = COMP_DELAYED;
1.53 markus 230: if (options->allow_tcp_forwarding == -1)
231: options->allow_tcp_forwarding = 1;
1.178 pyr 232: if (options->allow_agent_forwarding == -1)
233: options->allow_agent_forwarding = 1;
1.38 markus 234: if (options->gateway_ports == -1)
235: options->gateway_ports = 0;
1.46 markus 236: if (options->max_startups == -1)
237: options->max_startups = 10;
1.50 markus 238: if (options->max_startups_rate == -1)
239: options->max_startups_rate = 100; /* 100% */
240: if (options->max_startups_begin == -1)
241: options->max_startups_begin = options->max_startups;
1.133 dtucker 242: if (options->max_authtries == -1)
243: options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
1.180 djm 244: if (options->max_sessions == -1)
245: options->max_sessions = DEFAULT_SESSIONS_MAX;
1.122 markus 246: if (options->use_dns == -1)
247: options->use_dns = 1;
1.77 beck 248: if (options->client_alive_interval == -1)
1.95 deraadt 249: options->client_alive_interval = 0;
1.77 beck 250: if (options->client_alive_count_max == -1)
251: options->client_alive_count_max = 3;
1.90 markus 252: if (options->authorized_keys_file == NULL)
1.212 djm 253: options->authorized_keys_file = xstrdup(_PATH_SSH_USER_PERMITTED_KEYS);
1.145 reyk 254: if (options->permit_tun == -1)
1.146 reyk 255: options->permit_tun = SSH_TUNMODE_NO;
1.190 djm 256: if (options->zero_knowledge_password_authentication == -1)
257: options->zero_knowledge_password_authentication = 0;
1.213 djm 258: if (options->ip_qos_interactive == -1)
259: options->ip_qos_interactive = IPTOS_LOWDELAY;
260: if (options->ip_qos_bulk == -1)
261: options->ip_qos_bulk = IPTOS_THROUGHPUT;
1.102 provos 262:
1.110 markus 263: /* Turn privilege separation on by default */
1.102 provos 264: if (use_privsep == -1)
1.110 markus 265: use_privsep = 1;
1.1 deraadt 266: }
267:
268: /* Keyword tokens. */
1.25 markus 269: typedef enum {
270: sBadOption, /* == unknown option */
271: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
272: sPermitRootLogin, sLogFacility, sLogLevel,
1.124 markus 273: sRhostsRSAAuthentication, sRSAAuthentication,
1.25 markus 274: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.130 jakob 275: sKerberosGetAFSToken,
1.123 markus 276: sKerberosTgtPassing, sChallengeResponseAuthentication,
1.138 djm 277: sPasswordAuthentication, sKbdInteractiveAuthentication,
278: sListenAddress, sAddressFamily,
1.72 stevesk 279: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
1.99 stevesk 280: sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
1.129 markus 281: sStrictModes, sEmptyPasswd, sTCPKeepAlive,
1.113 markus 282: sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression,
1.53 markus 283: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 284: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.133 dtucker 285: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem,
1.180 djm 286: sMaxStartups, sMaxAuthTries, sMaxSessions,
1.122 markus 287: sBanner, sUseDNS, sHostbasedAuthentication,
1.95 deraadt 288: sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
1.89 jakob 289: sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2,
1.145 reyk 290: sGssAuthentication, sGssCleanupCreds, sAcceptEnv, sPermitTunnel,
1.176 djm 291: sMatch, sPermitOpen, sForceCommand, sChrootDirectory,
1.200 dtucker 292: sUsePrivilegeSeparation, sAllowAgentForwarding,
1.203 djm 293: sZeroKnowledgePasswordAuthentication, sHostCertificate,
1.208 djm 294: sRevokedKeys, sTrustedUserCAKeys, sAuthorizedPrincipalsFile,
1.213 djm 295: sKexAlgorithms, sIPQoS,
1.121 jakob 296: sDeprecated, sUnsupported
1.1 deraadt 297: } ServerOpCodes;
298:
1.153 dtucker 299: #define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */
300: #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
301: #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
302:
1.1 deraadt 303: /* Textual representation of the tokens. */
1.25 markus 304: static struct {
305: const char *name;
306: ServerOpCodes opcode;
1.153 dtucker 307: u_int flags;
1.25 markus 308: } keywords[] = {
1.153 dtucker 309: { "port", sPort, SSHCFG_GLOBAL },
310: { "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
311: { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
312: { "pidfile", sPidFile, SSHCFG_GLOBAL },
313: { "serverkeybits", sServerKeyBits, SSHCFG_GLOBAL },
314: { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
315: { "keyregenerationinterval", sKeyRegenerationTime, SSHCFG_GLOBAL },
1.175 dtucker 316: { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
1.153 dtucker 317: { "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
318: { "loglevel", sLogLevel, SSHCFG_GLOBAL },
319: { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
1.168 dtucker 320: { "rhostsrsaauthentication", sRhostsRSAAuthentication, SSHCFG_ALL },
321: { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
1.209 djm 322: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
1.168 dtucker 323: { "rsaauthentication", sRSAAuthentication, SSHCFG_ALL },
324: { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
1.153 dtucker 325: { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
1.123 markus 326: #ifdef KRB5
1.168 dtucker 327: { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
1.153 dtucker 328: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
329: { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
330: { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
1.121 jakob 331: #else
1.168 dtucker 332: { "kerberosauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 333: { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
334: { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
335: { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
1.126 markus 336: #endif
1.153 dtucker 337: { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
338: { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 339: #ifdef GSSAPI
1.168 dtucker 340: { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
1.153 dtucker 341: { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
1.125 markus 342: #else
1.168 dtucker 343: { "gssapiauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 344: { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 345: #endif
1.168 dtucker 346: { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
347: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
1.170 dtucker 348: { "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
1.153 dtucker 349: { "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */
1.190 djm 350: #ifdef JPAKE
351: { "zeroknowledgepasswordauthentication", sZeroKnowledgePasswordAuthentication, SSHCFG_ALL },
352: #else
353: { "zeroknowledgepasswordauthentication", sUnsupported, SSHCFG_ALL },
354: #endif
1.153 dtucker 355: { "checkmail", sDeprecated, SSHCFG_GLOBAL },
356: { "listenaddress", sListenAddress, SSHCFG_GLOBAL },
357: { "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
358: { "printmotd", sPrintMotd, SSHCFG_GLOBAL },
359: { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
360: { "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL },
361: { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
1.157 dtucker 362: { "x11forwarding", sX11Forwarding, SSHCFG_ALL },
363: { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
364: { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
1.153 dtucker 365: { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
366: { "strictmodes", sStrictModes, SSHCFG_GLOBAL },
1.188 djm 367: { "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
1.153 dtucker 368: { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
369: { "uselogin", sUseLogin, SSHCFG_GLOBAL },
370: { "compression", sCompression, SSHCFG_GLOBAL },
371: { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
372: { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
373: { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
1.178 pyr 374: { "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
1.153 dtucker 375: { "allowusers", sAllowUsers, SSHCFG_GLOBAL },
376: { "denyusers", sDenyUsers, SSHCFG_GLOBAL },
377: { "allowgroups", sAllowGroups, SSHCFG_GLOBAL },
378: { "denygroups", sDenyGroups, SSHCFG_GLOBAL },
379: { "ciphers", sCiphers, SSHCFG_GLOBAL },
380: { "macs", sMacs, SSHCFG_GLOBAL },
381: { "protocol", sProtocol, SSHCFG_GLOBAL },
382: { "gatewayports", sGatewayPorts, SSHCFG_ALL },
383: { "subsystem", sSubsystem, SSHCFG_GLOBAL },
384: { "maxstartups", sMaxStartups, SSHCFG_GLOBAL },
1.184 dtucker 385: { "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
1.180 djm 386: { "maxsessions", sMaxSessions, SSHCFG_ALL },
1.168 dtucker 387: { "banner", sBanner, SSHCFG_ALL },
1.153 dtucker 388: { "usedns", sUseDNS, SSHCFG_GLOBAL },
389: { "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
390: { "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
391: { "clientaliveinterval", sClientAliveInterval, SSHCFG_GLOBAL },
392: { "clientalivecountmax", sClientAliveCountMax, SSHCFG_GLOBAL },
1.209 djm 393: { "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_ALL },
394: { "authorizedkeysfile2", sAuthorizedKeysFile2, SSHCFG_ALL },
1.153 dtucker 395: { "useprivilegeseparation", sUsePrivilegeSeparation, SSHCFG_GLOBAL},
396: { "acceptenv", sAcceptEnv, SSHCFG_GLOBAL },
1.209 djm 397: { "permittunnel", sPermitTunnel, SSHCFG_ALL },
1.153 dtucker 398: { "match", sMatch, SSHCFG_ALL },
1.156 dtucker 399: { "permitopen", sPermitOpen, SSHCFG_ALL },
1.158 dtucker 400: { "forcecommand", sForceCommand, SSHCFG_ALL },
1.176 djm 401: { "chrootdirectory", sChrootDirectory, SSHCFG_ALL },
1.203 djm 402: { "hostcertificate", sHostCertificate, SSHCFG_GLOBAL },
1.204 djm 403: { "revokedkeys", sRevokedKeys, SSHCFG_ALL },
404: { "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
1.209 djm 405: { "authorizedprincipalsfile", sAuthorizedPrincipalsFile, SSHCFG_ALL },
1.211 djm 406: { "kexalgorithms", sKexAlgorithms, SSHCFG_GLOBAL },
1.213 djm 407: { "ipqos", sIPQoS, SSHCFG_ALL },
1.153 dtucker 408: { NULL, sBadOption, 0 }
1.1 deraadt 409: };
410:
1.182 dtucker 411: static struct {
412: int val;
413: char *text;
414: } tunmode_desc[] = {
415: { SSH_TUNMODE_NO, "no" },
416: { SSH_TUNMODE_POINTOPOINT, "point-to-point" },
417: { SSH_TUNMODE_ETHERNET, "ethernet" },
418: { SSH_TUNMODE_YES, "yes" },
419: { -1, NULL }
420: };
421:
1.27 markus 422: /*
1.73 stevesk 423: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 424: */
1.1 deraadt 425:
1.34 markus 426: static ServerOpCodes
1.25 markus 427: parse_token(const char *cp, const char *filename,
1.153 dtucker 428: int linenum, u_int *flags)
1.1 deraadt 429: {
1.55 markus 430: u_int i;
1.1 deraadt 431:
1.25 markus 432: for (i = 0; keywords[i].name; i++)
1.153 dtucker 433: if (strcasecmp(cp, keywords[i].name) == 0) {
434: *flags = keywords[i].flags;
1.25 markus 435: return keywords[i].opcode;
1.153 dtucker 436: }
1.25 markus 437:
1.78 stevesk 438: error("%s: line %d: Bad configuration option: %s",
439: filename, linenum, cp);
1.25 markus 440: return sBadOption;
1.1 deraadt 441: }
442:
1.202 djm 443: char *
444: derelativise_path(const char *path)
445: {
1.207 djm 446: char *expanded, *ret, cwd[MAXPATHLEN];
1.202 djm 447:
448: expanded = tilde_expand_filename(path, getuid());
449: if (*expanded == '/')
450: return expanded;
1.207 djm 451: if (getcwd(cwd, sizeof(cwd)) == NULL)
1.202 djm 452: fatal("%s: getcwd: %s", __func__, strerror(errno));
453: xasprintf(&ret, "%s/%s", cwd, expanded);
454: xfree(expanded);
455: return ret;
456: }
457:
1.84 itojun 458: static void
1.194 djm 459: add_listen_addr(ServerOptions *options, char *addr, int port)
1.74 stevesk 460: {
1.142 djm 461: u_int i;
1.74 stevesk 462:
463: if (options->num_ports == 0)
464: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.138 djm 465: if (options->address_family == -1)
466: options->address_family = AF_UNSPEC;
1.76 stevesk 467: if (port == 0)
1.74 stevesk 468: for (i = 0; i < options->num_ports; i++)
469: add_one_listen_addr(options, addr, options->ports[i]);
470: else
1.76 stevesk 471: add_one_listen_addr(options, addr, port);
1.74 stevesk 472: }
473:
1.84 itojun 474: static void
1.194 djm 475: add_one_listen_addr(ServerOptions *options, char *addr, int port)
1.29 markus 476: {
477: struct addrinfo hints, *ai, *aitop;
478: char strport[NI_MAXSERV];
479: int gaierr;
480:
1.74 stevesk 481: memset(&hints, 0, sizeof(hints));
1.138 djm 482: hints.ai_family = options->address_family;
1.74 stevesk 483: hints.ai_socktype = SOCK_STREAM;
484: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
1.194 djm 485: snprintf(strport, sizeof strport, "%d", port);
1.74 stevesk 486: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
487: fatal("bad addr or host: %s (%s)",
488: addr ? addr : "<NULL>",
1.173 dtucker 489: ssh_gai_strerror(gaierr));
1.74 stevesk 490: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
491: ;
492: ai->ai_next = options->listen_addrs;
493: options->listen_addrs = aitop;
1.29 markus 494: }
495:
1.153 dtucker 496: /*
497: * The strategy for the Match blocks is that the config file is parsed twice.
498: *
499: * The first time is at startup. activep is initialized to 1 and the
500: * directives in the global context are processed and acted on. Hitting a
501: * Match directive unsets activep and the directives inside the block are
502: * checked for syntax only.
503: *
504: * The second time is after a connection has been established but before
505: * authentication. activep is initialized to 2 and global config directives
506: * are ignored since they have already been processed. If the criteria in a
507: * Match block is met, activep is set and the subsequent directives
508: * processed and actioned until EOF or another Match block unsets it. Any
509: * options set are copied into the main server config.
510: *
511: * Potential additions/improvements:
512: * - Add Match support for pre-kex directives, eg Protocol, Ciphers.
513: *
514: * - Add a Tag directive (idea from David Leonard) ala pf, eg:
515: * Match Address 192.168.0.*
516: * Tag trusted
517: * Match Group wheel
518: * Tag trusted
519: * Match Tag trusted
520: * AllowTcpForwarding yes
521: * GatewayPorts clientspecified
522: * [...]
523: *
524: * - Add a PermittedChannelRequests directive
525: * Match Group shell
526: * PermittedChannelRequests session,forwarded-tcpip
527: */
528:
529: static int
1.165 dtucker 530: match_cfg_line_group(const char *grps, int line, const char *user)
531: {
532: int result = 0;
533: struct passwd *pw;
534:
535: if (user == NULL)
536: goto out;
537:
538: if ((pw = getpwnam(user)) == NULL) {
539: debug("Can't match group at line %d because user %.100s does "
540: "not exist", line, user);
541: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
542: debug("Can't Match group because user %.100s not in any group "
543: "at line %d", user, line);
1.186 djm 544: } else if (ga_match_pattern_list(grps) != 1) {
545: debug("user %.100s does not match group list %.100s at line %d",
546: user, grps, line);
1.165 dtucker 547: } else {
1.186 djm 548: debug("user %.100s matched group list %.100s at line %d", user,
549: grps, line);
1.165 dtucker 550: result = 1;
551: }
552: out:
553: ga_free();
554: return result;
555: }
556:
557: static int
1.153 dtucker 558: match_cfg_line(char **condition, int line, const char *user, const char *host,
559: const char *address)
560: {
561: int result = 1;
562: char *arg, *attrib, *cp = *condition;
563: size_t len;
564:
565: if (user == NULL)
566: debug3("checking syntax for 'Match %s'", cp);
567: else
568: debug3("checking match for '%s' user %s host %s addr %s", cp,
569: user ? user : "(null)", host ? host : "(null)",
570: address ? address : "(null)");
571:
572: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
573: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
574: error("Missing Match criteria for %s", attrib);
575: return -1;
576: }
577: len = strlen(arg);
578: if (strcasecmp(attrib, "user") == 0) {
579: if (!user) {
580: result = 0;
581: continue;
582: }
583: if (match_pattern_list(user, arg, len, 0) != 1)
584: result = 0;
585: else
586: debug("user %.100s matched 'User %.100s' at "
587: "line %d", user, arg, line);
1.165 dtucker 588: } else if (strcasecmp(attrib, "group") == 0) {
589: switch (match_cfg_line_group(arg, line, user)) {
590: case -1:
591: return -1;
592: case 0:
593: result = 0;
594: }
1.153 dtucker 595: } else if (strcasecmp(attrib, "host") == 0) {
596: if (!host) {
597: result = 0;
598: continue;
599: }
600: if (match_hostname(host, arg, len) != 1)
601: result = 0;
602: else
603: debug("connection from %.100s matched 'Host "
604: "%.100s' at line %d", host, arg, line);
605: } else if (strcasecmp(attrib, "address") == 0) {
1.181 djm 606: switch (addr_match_list(address, arg)) {
607: case 1:
608: debug("connection from %.100s matched 'Address "
609: "%.100s' at line %d", address, arg, line);
610: break;
611: case 0:
1.183 djm 612: case -1:
1.153 dtucker 613: result = 0;
1.181 djm 614: break;
1.183 djm 615: case -2:
1.181 djm 616: return -1;
1.153 dtucker 617: }
618: } else {
619: error("Unsupported Match attribute %s", attrib);
620: return -1;
621: }
622: }
623: if (user != NULL)
624: debug3("match %sfound", result ? "" : "not ");
625: *condition = cp;
626: return result;
627: }
628:
1.158 dtucker 629: #define WHITESPACE " \t\r\n"
630:
1.94 markus 631: int
632: process_server_config_line(ServerOptions *options, char *line,
1.153 dtucker 633: const char *filename, int linenum, int *activep, const char *user,
634: const char *host, const char *address)
1.1 deraadt 635: {
1.74 stevesk 636: char *cp, **charptr, *arg, *p;
1.213 djm 637: int cmdline = 0, *intptr, value, value2, n;
1.174 dtucker 638: SyslogFacility *log_facility_ptr;
639: LogLevel *log_level_ptr;
1.25 markus 640: ServerOpCodes opcode;
1.194 djm 641: int port;
1.153 dtucker 642: u_int i, flags = 0;
1.151 djm 643: size_t len;
1.25 markus 644:
1.94 markus 645: cp = line;
1.148 dtucker 646: if ((arg = strdelim(&cp)) == NULL)
1.147 djm 647: return 0;
1.94 markus 648: /* Ignore leading whitespace */
649: if (*arg == '\0')
650: arg = strdelim(&cp);
651: if (!arg || !*arg || *arg == '#')
652: return 0;
653: intptr = NULL;
654: charptr = NULL;
1.153 dtucker 655: opcode = parse_token(arg, filename, linenum, &flags);
656:
657: if (activep == NULL) { /* We are processing a command line directive */
658: cmdline = 1;
659: activep = &cmdline;
660: }
661: if (*activep && opcode != sMatch)
662: debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
663: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
664: if (user == NULL) {
665: fatal("%s line %d: Directive '%s' is not allowed "
666: "within a Match block", filename, linenum, arg);
667: } else { /* this is a directive we have already processed */
668: while (arg)
669: arg = strdelim(&cp);
670: return 0;
671: }
672: }
673:
1.94 markus 674: switch (opcode) {
675: case sBadOption:
676: return -1;
677: case sPort:
678: /* ignore ports from configfile if cmdline specifies ports */
679: if (options->ports_from_cmdline)
680: return 0;
681: if (options->listen_addrs != NULL)
682: fatal("%s line %d: ports must be specified before "
1.98 stevesk 683: "ListenAddress.", filename, linenum);
1.94 markus 684: if (options->num_ports >= MAX_PORTS)
685: fatal("%s line %d: too many ports.",
686: filename, linenum);
1.48 provos 687: arg = strdelim(&cp);
1.94 markus 688: if (!arg || *arg == '\0')
689: fatal("%s line %d: missing port number.",
690: filename, linenum);
691: options->ports[options->num_ports++] = a2port(arg);
1.194 djm 692: if (options->ports[options->num_ports-1] <= 0)
1.94 markus 693: fatal("%s line %d: Badly formatted port number.",
694: filename, linenum);
695: break;
1.29 markus 696:
1.94 markus 697: case sServerKeyBits:
698: intptr = &options->server_key_bits;
1.180 djm 699: parse_int:
1.94 markus 700: arg = strdelim(&cp);
701: if (!arg || *arg == '\0')
702: fatal("%s line %d: missing integer value.",
703: filename, linenum);
704: value = atoi(arg);
1.153 dtucker 705: if (*activep && *intptr == -1)
1.94 markus 706: *intptr = value;
707: break;
1.25 markus 708:
1.94 markus 709: case sLoginGraceTime:
710: intptr = &options->login_grace_time;
1.180 djm 711: parse_time:
1.94 markus 712: arg = strdelim(&cp);
713: if (!arg || *arg == '\0')
714: fatal("%s line %d: missing time value.",
715: filename, linenum);
716: if ((value = convtime(arg)) == -1)
717: fatal("%s line %d: invalid time value.",
718: filename, linenum);
719: if (*intptr == -1)
720: *intptr = value;
721: break;
722:
723: case sKeyRegenerationTime:
724: intptr = &options->key_regeneration_time;
725: goto parse_time;
726:
727: case sListenAddress:
728: arg = strdelim(&cp);
1.139 djm 729: if (arg == NULL || *arg == '\0')
730: fatal("%s line %d: missing address",
1.94 markus 731: filename, linenum);
1.144 dtucker 732: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
733: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
734: && strchr(p+1, ':') != NULL) {
735: add_listen_addr(options, arg, 0);
736: break;
737: }
1.139 djm 738: p = hpdelim(&arg);
739: if (p == NULL)
740: fatal("%s line %d: bad address:port usage",
741: filename, linenum);
742: p = cleanhostname(p);
743: if (arg == NULL)
744: port = 0;
1.194 djm 745: else if ((port = a2port(arg)) <= 0)
1.139 djm 746: fatal("%s line %d: bad port number", filename, linenum);
747:
748: add_listen_addr(options, p, port);
1.25 markus 749:
1.138 djm 750: break;
751:
752: case sAddressFamily:
753: arg = strdelim(&cp);
1.141 markus 754: if (!arg || *arg == '\0')
755: fatal("%s line %d: missing address family.",
756: filename, linenum);
1.138 djm 757: intptr = &options->address_family;
758: if (options->listen_addrs != NULL)
759: fatal("%s line %d: address family must be specified before "
760: "ListenAddress.", filename, linenum);
761: if (strcasecmp(arg, "inet") == 0)
762: value = AF_INET;
763: else if (strcasecmp(arg, "inet6") == 0)
764: value = AF_INET6;
765: else if (strcasecmp(arg, "any") == 0)
766: value = AF_UNSPEC;
767: else
768: fatal("%s line %d: unsupported address family \"%s\".",
769: filename, linenum, arg);
770: if (*intptr == -1)
771: *intptr = value;
1.94 markus 772: break;
773:
774: case sHostKeyFile:
775: intptr = &options->num_host_key_files;
776: if (*intptr >= MAX_HOSTKEYS)
777: fatal("%s line %d: too many host keys specified (max %d).",
778: filename, linenum, MAX_HOSTKEYS);
779: charptr = &options->host_key_files[*intptr];
1.180 djm 780: parse_filename:
1.94 markus 781: arg = strdelim(&cp);
782: if (!arg || *arg == '\0')
783: fatal("%s line %d: missing file name.",
784: filename, linenum);
1.153 dtucker 785: if (*activep && *charptr == NULL) {
1.202 djm 786: *charptr = derelativise_path(arg);
1.94 markus 787: /* increase optional counter */
788: if (intptr != NULL)
789: *intptr = *intptr + 1;
790: }
791: break;
1.76 stevesk 792:
1.203 djm 793: case sHostCertificate:
794: intptr = &options->num_host_cert_files;
795: if (*intptr >= MAX_HOSTKEYS)
796: fatal("%s line %d: too many host certificates "
797: "specified (max %d).", filename, linenum,
798: MAX_HOSTCERTS);
799: charptr = &options->host_cert_files[*intptr];
800: goto parse_filename;
801: break;
802:
1.94 markus 803: case sPidFile:
804: charptr = &options->pid_file;
805: goto parse_filename;
1.25 markus 806:
1.94 markus 807: case sPermitRootLogin:
808: intptr = &options->permit_root_login;
809: arg = strdelim(&cp);
810: if (!arg || *arg == '\0')
811: fatal("%s line %d: missing yes/"
812: "without-password/forced-commands-only/no "
813: "argument.", filename, linenum);
814: value = 0; /* silence compiler */
815: if (strcmp(arg, "without-password") == 0)
816: value = PERMIT_NO_PASSWD;
817: else if (strcmp(arg, "forced-commands-only") == 0)
818: value = PERMIT_FORCED_ONLY;
819: else if (strcmp(arg, "yes") == 0)
820: value = PERMIT_YES;
821: else if (strcmp(arg, "no") == 0)
822: value = PERMIT_NO;
823: else
824: fatal("%s line %d: Bad yes/"
825: "without-password/forced-commands-only/no "
826: "argument: %s", filename, linenum, arg);
1.175 dtucker 827: if (*activep && *intptr == -1)
1.94 markus 828: *intptr = value;
829: break;
1.36 markus 830:
1.94 markus 831: case sIgnoreRhosts:
832: intptr = &options->ignore_rhosts;
1.180 djm 833: parse_flag:
1.94 markus 834: arg = strdelim(&cp);
835: if (!arg || *arg == '\0')
836: fatal("%s line %d: missing yes/no argument.",
837: filename, linenum);
838: value = 0; /* silence compiler */
839: if (strcmp(arg, "yes") == 0)
840: value = 1;
841: else if (strcmp(arg, "no") == 0)
842: value = 0;
843: else
844: fatal("%s line %d: Bad yes/no argument: %s",
845: filename, linenum, arg);
1.153 dtucker 846: if (*activep && *intptr == -1)
1.94 markus 847: *intptr = value;
848: break;
849:
850: case sIgnoreUserKnownHosts:
851: intptr = &options->ignore_user_known_hosts;
852: goto parse_flag;
853:
854: case sRhostsRSAAuthentication:
855: intptr = &options->rhosts_rsa_authentication;
856: goto parse_flag;
857:
858: case sHostbasedAuthentication:
859: intptr = &options->hostbased_authentication;
860: goto parse_flag;
861:
862: case sHostbasedUsesNameFromPacketOnly:
863: intptr = &options->hostbased_uses_name_from_packet_only;
864: goto parse_flag;
865:
866: case sRSAAuthentication:
867: intptr = &options->rsa_authentication;
868: goto parse_flag;
869:
870: case sPubkeyAuthentication:
871: intptr = &options->pubkey_authentication;
872: goto parse_flag;
1.119 jakob 873:
1.94 markus 874: case sKerberosAuthentication:
875: intptr = &options->kerberos_authentication;
876: goto parse_flag;
877:
878: case sKerberosOrLocalPasswd:
879: intptr = &options->kerberos_or_local_passwd;
880: goto parse_flag;
881:
882: case sKerberosTicketCleanup:
883: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 884: goto parse_flag;
885:
886: case sKerberosGetAFSToken:
887: intptr = &options->kerberos_get_afs_token;
1.125 markus 888: goto parse_flag;
889:
890: case sGssAuthentication:
891: intptr = &options->gss_authentication;
892: goto parse_flag;
893:
894: case sGssCleanupCreds:
895: intptr = &options->gss_cleanup_creds;
1.94 markus 896: goto parse_flag;
897:
898: case sPasswordAuthentication:
899: intptr = &options->password_authentication;
900: goto parse_flag;
901:
1.190 djm 902: case sZeroKnowledgePasswordAuthentication:
903: intptr = &options->zero_knowledge_password_authentication;
904: goto parse_flag;
905:
1.94 markus 906: case sKbdInteractiveAuthentication:
907: intptr = &options->kbd_interactive_authentication;
908: goto parse_flag;
909:
910: case sChallengeResponseAuthentication:
911: intptr = &options->challenge_response_authentication;
912: goto parse_flag;
913:
914: case sPrintMotd:
915: intptr = &options->print_motd;
916: goto parse_flag;
917:
918: case sPrintLastLog:
919: intptr = &options->print_lastlog;
920: goto parse_flag;
921:
922: case sX11Forwarding:
923: intptr = &options->x11_forwarding;
924: goto parse_flag;
925:
926: case sX11DisplayOffset:
927: intptr = &options->x11_display_offset;
928: goto parse_int;
1.99 stevesk 929:
930: case sX11UseLocalhost:
931: intptr = &options->x11_use_localhost;
932: goto parse_flag;
1.94 markus 933:
934: case sXAuthLocation:
935: charptr = &options->xauth_location;
936: goto parse_filename;
937:
938: case sStrictModes:
939: intptr = &options->strict_modes;
940: goto parse_flag;
941:
1.129 markus 942: case sTCPKeepAlive:
943: intptr = &options->tcp_keep_alive;
1.94 markus 944: goto parse_flag;
945:
946: case sEmptyPasswd:
947: intptr = &options->permit_empty_passwd;
1.113 markus 948: goto parse_flag;
949:
950: case sPermitUserEnvironment:
951: intptr = &options->permit_user_env;
1.94 markus 952: goto parse_flag;
953:
954: case sUseLogin:
955: intptr = &options->use_login;
1.111 markus 956: goto parse_flag;
957:
958: case sCompression:
959: intptr = &options->compression;
1.143 markus 960: arg = strdelim(&cp);
961: if (!arg || *arg == '\0')
962: fatal("%s line %d: missing yes/no/delayed "
963: "argument.", filename, linenum);
964: value = 0; /* silence compiler */
965: if (strcmp(arg, "delayed") == 0)
966: value = COMP_DELAYED;
967: else if (strcmp(arg, "yes") == 0)
968: value = COMP_ZLIB;
969: else if (strcmp(arg, "no") == 0)
970: value = COMP_NONE;
971: else
972: fatal("%s line %d: Bad yes/no/delayed "
973: "argument: %s", filename, linenum, arg);
974: if (*intptr == -1)
975: *intptr = value;
976: break;
1.94 markus 977:
978: case sGatewayPorts:
979: intptr = &options->gateway_ports;
1.139 djm 980: arg = strdelim(&cp);
981: if (!arg || *arg == '\0')
982: fatal("%s line %d: missing yes/no/clientspecified "
983: "argument.", filename, linenum);
984: value = 0; /* silence compiler */
985: if (strcmp(arg, "clientspecified") == 0)
986: value = 2;
987: else if (strcmp(arg, "yes") == 0)
988: value = 1;
989: else if (strcmp(arg, "no") == 0)
990: value = 0;
991: else
992: fatal("%s line %d: Bad yes/no/clientspecified "
993: "argument: %s", filename, linenum, arg);
1.169 dtucker 994: if (*activep && *intptr == -1)
1.139 djm 995: *intptr = value;
996: break;
1.25 markus 997:
1.122 markus 998: case sUseDNS:
999: intptr = &options->use_dns;
1.94 markus 1000: goto parse_flag;
1.53 markus 1001:
1.94 markus 1002: case sLogFacility:
1.174 dtucker 1003: log_facility_ptr = &options->log_facility;
1.94 markus 1004: arg = strdelim(&cp);
1005: value = log_facility_number(arg);
1.101 markus 1006: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 1007: fatal("%.200s line %d: unsupported log facility '%s'",
1008: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1009: if (*log_facility_ptr == -1)
1010: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 1011: break;
1.25 markus 1012:
1.94 markus 1013: case sLogLevel:
1.174 dtucker 1014: log_level_ptr = &options->log_level;
1.94 markus 1015: arg = strdelim(&cp);
1016: value = log_level_number(arg);
1.101 markus 1017: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 1018: fatal("%.200s line %d: unsupported log level '%s'",
1019: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1020: if (*log_level_ptr == -1)
1021: *log_level_ptr = (LogLevel) value;
1.94 markus 1022: break;
1023:
1024: case sAllowTcpForwarding:
1025: intptr = &options->allow_tcp_forwarding;
1026: goto parse_flag;
1.102 provos 1027:
1.178 pyr 1028: case sAllowAgentForwarding:
1029: intptr = &options->allow_agent_forwarding;
1030: goto parse_flag;
1031:
1.102 provos 1032: case sUsePrivilegeSeparation:
1033: intptr = &use_privsep;
1034: goto parse_flag;
1.94 markus 1035:
1036: case sAllowUsers:
1037: while ((arg = strdelim(&cp)) && *arg != '\0') {
1038: if (options->num_allow_users >= MAX_ALLOW_USERS)
1039: fatal("%s line %d: too many allow users.",
1040: filename, linenum);
1.112 deraadt 1041: options->allow_users[options->num_allow_users++] =
1042: xstrdup(arg);
1.94 markus 1043: }
1044: break;
1.25 markus 1045:
1.94 markus 1046: case sDenyUsers:
1047: while ((arg = strdelim(&cp)) && *arg != '\0') {
1048: if (options->num_deny_users >= MAX_DENY_USERS)
1.163 stevesk 1049: fatal("%s line %d: too many deny users.",
1.94 markus 1050: filename, linenum);
1.112 deraadt 1051: options->deny_users[options->num_deny_users++] =
1052: xstrdup(arg);
1.94 markus 1053: }
1054: break;
1.25 markus 1055:
1.94 markus 1056: case sAllowGroups:
1057: while ((arg = strdelim(&cp)) && *arg != '\0') {
1058: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1059: fatal("%s line %d: too many allow groups.",
1060: filename, linenum);
1.112 deraadt 1061: options->allow_groups[options->num_allow_groups++] =
1062: xstrdup(arg);
1.94 markus 1063: }
1064: break;
1.33 markus 1065:
1.94 markus 1066: case sDenyGroups:
1067: while ((arg = strdelim(&cp)) && *arg != '\0') {
1068: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1069: fatal("%s line %d: too many deny groups.",
1070: filename, linenum);
1071: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1072: }
1073: break;
1.66 markus 1074:
1.94 markus 1075: case sCiphers:
1076: arg = strdelim(&cp);
1077: if (!arg || *arg == '\0')
1078: fatal("%s line %d: Missing argument.", filename, linenum);
1079: if (!ciphers_valid(arg))
1080: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1081: filename, linenum, arg ? arg : "<NONE>");
1082: if (options->ciphers == NULL)
1083: options->ciphers = xstrdup(arg);
1084: break;
1.33 markus 1085:
1.94 markus 1086: case sMacs:
1087: arg = strdelim(&cp);
1088: if (!arg || *arg == '\0')
1089: fatal("%s line %d: Missing argument.", filename, linenum);
1090: if (!mac_valid(arg))
1091: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1092: filename, linenum, arg ? arg : "<NONE>");
1093: if (options->macs == NULL)
1094: options->macs = xstrdup(arg);
1.211 djm 1095: break;
1096:
1097: case sKexAlgorithms:
1098: arg = strdelim(&cp);
1099: if (!arg || *arg == '\0')
1100: fatal("%s line %d: Missing argument.",
1101: filename, linenum);
1102: if (!kex_names_valid(arg))
1103: fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
1104: filename, linenum, arg ? arg : "<NONE>");
1105: if (options->kex_algorithms == NULL)
1106: options->kex_algorithms = xstrdup(arg);
1.94 markus 1107: break;
1.43 jakob 1108:
1.94 markus 1109: case sProtocol:
1110: intptr = &options->protocol;
1111: arg = strdelim(&cp);
1112: if (!arg || *arg == '\0')
1113: fatal("%s line %d: Missing argument.", filename, linenum);
1114: value = proto_spec(arg);
1115: if (value == SSH_PROTO_UNKNOWN)
1116: fatal("%s line %d: Bad protocol spec '%s'.",
1.95 deraadt 1117: filename, linenum, arg ? arg : "<NONE>");
1.94 markus 1118: if (*intptr == SSH_PROTO_UNKNOWN)
1119: *intptr = value;
1120: break;
1121:
1122: case sSubsystem:
1123: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1124: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1125: filename, linenum);
1.94 markus 1126: }
1127: arg = strdelim(&cp);
1128: if (!arg || *arg == '\0')
1129: fatal("%s line %d: Missing subsystem name.",
1.95 deraadt 1130: filename, linenum);
1.153 dtucker 1131: if (!*activep) {
1132: arg = strdelim(&cp);
1133: break;
1134: }
1.94 markus 1135: for (i = 0; i < options->num_subsystems; i++)
1136: if (strcmp(arg, options->subsystem_name[i]) == 0)
1137: fatal("%s line %d: Subsystem '%s' already defined.",
1.95 deraadt 1138: filename, linenum, arg);
1.94 markus 1139: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1140: arg = strdelim(&cp);
1141: if (!arg || *arg == '\0')
1142: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1143: filename, linenum);
1.94 markus 1144: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1145:
1146: /* Collect arguments (separate to executable) */
1147: p = xstrdup(arg);
1148: len = strlen(p) + 1;
1149: while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1150: len += 1 + strlen(arg);
1151: p = xrealloc(p, 1, len);
1152: strlcat(p, " ", len);
1153: strlcat(p, arg, len);
1154: }
1155: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1156: options->num_subsystems++;
1157: break;
1.46 markus 1158:
1.94 markus 1159: case sMaxStartups:
1160: arg = strdelim(&cp);
1161: if (!arg || *arg == '\0')
1162: fatal("%s line %d: Missing MaxStartups spec.",
1.95 deraadt 1163: filename, linenum);
1.94 markus 1164: if ((n = sscanf(arg, "%d:%d:%d",
1165: &options->max_startups_begin,
1166: &options->max_startups_rate,
1167: &options->max_startups)) == 3) {
1168: if (options->max_startups_begin >
1169: options->max_startups ||
1170: options->max_startups_rate > 100 ||
1171: options->max_startups_rate < 1)
1.50 markus 1172: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 1173: filename, linenum);
1.94 markus 1174: } else if (n != 1)
1175: fatal("%s line %d: Illegal MaxStartups spec.",
1176: filename, linenum);
1177: else
1178: options->max_startups = options->max_startups_begin;
1179: break;
1.133 dtucker 1180:
1181: case sMaxAuthTries:
1182: intptr = &options->max_authtries;
1183: goto parse_int;
1.94 markus 1184:
1.180 djm 1185: case sMaxSessions:
1186: intptr = &options->max_sessions;
1187: goto parse_int;
1188:
1.94 markus 1189: case sBanner:
1190: charptr = &options->banner;
1191: goto parse_filename;
1.176 djm 1192:
1.94 markus 1193: /*
1194: * These options can contain %X options expanded at
1195: * connect time, so that you can specify paths like:
1196: *
1197: * AuthorizedKeysFile /etc/ssh_keys/%u
1198: */
1199: case sAuthorizedKeysFile:
1.208 djm 1200: charptr = &options->authorized_keys_file;
1201: goto parse_tilde_filename;
1202: case sAuthorizedPrincipalsFile:
1203: charptr = &options->authorized_principals_file;
1204: parse_tilde_filename:
1.205 djm 1205: arg = strdelim(&cp);
1206: if (!arg || *arg == '\0')
1207: fatal("%s line %d: missing file name.",
1208: filename, linenum);
1209: if (*activep && *charptr == NULL) {
1.206 markus 1210: *charptr = tilde_expand_filename(arg, getuid());
1.205 djm 1211: /* increase optional counter */
1212: if (intptr != NULL)
1213: *intptr = *intptr + 1;
1214: }
1215: break;
1.94 markus 1216:
1217: case sClientAliveInterval:
1218: intptr = &options->client_alive_interval;
1219: goto parse_time;
1220:
1221: case sClientAliveCountMax:
1222: intptr = &options->client_alive_count_max;
1223: goto parse_int;
1.131 djm 1224:
1225: case sAcceptEnv:
1226: while ((arg = strdelim(&cp)) && *arg != '\0') {
1227: if (strchr(arg, '=') != NULL)
1228: fatal("%s line %d: Invalid environment name.",
1229: filename, linenum);
1230: if (options->num_accept_env >= MAX_ACCEPT_ENV)
1231: fatal("%s line %d: too many allow env.",
1232: filename, linenum);
1.153 dtucker 1233: if (!*activep)
1234: break;
1.131 djm 1235: options->accept_env[options->num_accept_env++] =
1236: xstrdup(arg);
1237: }
1238: break;
1.145 reyk 1239:
1240: case sPermitTunnel:
1241: intptr = &options->permit_tun;
1.146 reyk 1242: arg = strdelim(&cp);
1243: if (!arg || *arg == '\0')
1244: fatal("%s line %d: Missing yes/point-to-point/"
1245: "ethernet/no argument.", filename, linenum);
1.182 dtucker 1246: value = -1;
1247: for (i = 0; tunmode_desc[i].val != -1; i++)
1248: if (strcmp(tunmode_desc[i].text, arg) == 0) {
1249: value = tunmode_desc[i].val;
1250: break;
1251: }
1252: if (value == -1)
1.146 reyk 1253: fatal("%s line %d: Bad yes/point-to-point/ethernet/"
1254: "no argument: %s", filename, linenum, arg);
1255: if (*intptr == -1)
1256: *intptr = value;
1257: break;
1.94 markus 1258:
1.153 dtucker 1259: case sMatch:
1260: if (cmdline)
1261: fatal("Match directive not supported as a command-line "
1262: "option");
1263: value = match_cfg_line(&cp, linenum, user, host, address);
1264: if (value < 0)
1265: fatal("%s line %d: Bad Match condition", filename,
1266: linenum);
1267: *activep = value;
1.156 dtucker 1268: break;
1269:
1270: case sPermitOpen:
1271: arg = strdelim(&cp);
1272: if (!arg || *arg == '\0')
1273: fatal("%s line %d: missing PermitOpen specification",
1274: filename, linenum);
1.167 dtucker 1275: n = options->num_permitted_opens; /* modified later */
1.156 dtucker 1276: if (strcmp(arg, "any") == 0) {
1.167 dtucker 1277: if (*activep && n == -1) {
1.156 dtucker 1278: channel_clear_adm_permitted_opens();
1.159 dtucker 1279: options->num_permitted_opens = 0;
1280: }
1.156 dtucker 1281: break;
1282: }
1.166 dtucker 1283: if (*activep && n == -1)
1284: channel_clear_adm_permitted_opens();
1.159 dtucker 1285: for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
1286: p = hpdelim(&arg);
1287: if (p == NULL)
1288: fatal("%s line %d: missing host in PermitOpen",
1289: filename, linenum);
1290: p = cleanhostname(p);
1.194 djm 1291: if (arg == NULL || (port = a2port(arg)) <= 0)
1.159 dtucker 1292: fatal("%s line %d: bad port number in "
1293: "PermitOpen", filename, linenum);
1.166 dtucker 1294: if (*activep && n == -1)
1.159 dtucker 1295: options->num_permitted_opens =
1296: channel_add_adm_permitted_opens(p, port);
1297: }
1.153 dtucker 1298: break;
1299:
1.158 dtucker 1300: case sForceCommand:
1301: if (cp == NULL)
1302: fatal("%.200s line %d: Missing argument.", filename,
1303: linenum);
1304: len = strspn(cp, WHITESPACE);
1305: if (*activep && options->adm_forced_command == NULL)
1306: options->adm_forced_command = xstrdup(cp + len);
1307: return 0;
1308:
1.176 djm 1309: case sChrootDirectory:
1310: charptr = &options->chroot_directory;
1.177 djm 1311:
1312: arg = strdelim(&cp);
1313: if (!arg || *arg == '\0')
1314: fatal("%s line %d: missing file name.",
1315: filename, linenum);
1316: if (*activep && *charptr == NULL)
1317: *charptr = xstrdup(arg);
1318: break;
1.176 djm 1319:
1.204 djm 1320: case sTrustedUserCAKeys:
1321: charptr = &options->trusted_user_ca_keys;
1322: goto parse_filename;
1323:
1324: case sRevokedKeys:
1325: charptr = &options->revoked_keys_file;
1326: goto parse_filename;
1327:
1.213 djm 1328: case sIPQoS:
1329: arg = strdelim(&cp);
1330: if ((value = parse_ipqos(arg)) == -1)
1331: fatal("%s line %d: Bad IPQoS value: %s",
1332: filename, linenum, arg);
1333: arg = strdelim(&cp);
1334: if (arg == NULL)
1335: value2 = value;
1336: else if ((value2 = parse_ipqos(arg)) == -1)
1337: fatal("%s line %d: Bad IPQoS value: %s",
1338: filename, linenum, arg);
1339: if (*activep) {
1340: options->ip_qos_interactive = value;
1341: options->ip_qos_bulk = value2;
1342: }
1343: break;
1344:
1.94 markus 1345: case sDeprecated:
1.117 itojun 1346: logit("%s line %d: Deprecated option %s",
1.121 jakob 1347: filename, linenum, arg);
1348: while (arg)
1349: arg = strdelim(&cp);
1350: break;
1351:
1352: case sUnsupported:
1353: logit("%s line %d: Unsupported option %s",
1.94 markus 1354: filename, linenum, arg);
1355: while (arg)
1356: arg = strdelim(&cp);
1357: break;
1358:
1359: default:
1360: fatal("%s line %d: Missing handler for opcode %s (%d)",
1361: filename, linenum, arg, opcode);
1362: }
1363: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
1364: fatal("%s line %d: garbage at end of line; \"%.200s\".",
1365: filename, linenum, arg);
1366: return 0;
1367: }
1368:
1369: /* Reads the server configuration file. */
1.25 markus 1370:
1.94 markus 1371: void
1.134 djm 1372: load_server_config(const char *filename, Buffer *conf)
1.94 markus 1373: {
1.134 djm 1374: char line[1024], *cp;
1.94 markus 1375: FILE *f;
1.81 stevesk 1376:
1.134 djm 1377: debug2("%s: filename %s", __func__, filename);
1378: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 1379: perror(filename);
1380: exit(1);
1381: }
1.134 djm 1382: buffer_clear(conf);
1383: while (fgets(line, sizeof(line), f)) {
1384: /*
1385: * Trim out comments and strip whitespace
1.135 deraadt 1386: * NB - preserve newlines, they are needed to reproduce
1.134 djm 1387: * line numbers later for error messages
1388: */
1389: if ((cp = strchr(line, '#')) != NULL)
1390: memcpy(cp, "\n", 2);
1391: cp = line + strspn(line, " \t\r");
1392:
1393: buffer_append(conf, cp, strlen(cp));
1394: }
1395: buffer_append(conf, "\0", 1);
1396: fclose(f);
1397: debug2("%s: done config len = %d", __func__, buffer_len(conf));
1398: }
1399:
1400: void
1.153 dtucker 1401: parse_server_match_config(ServerOptions *options, const char *user,
1402: const char *host, const char *address)
1403: {
1404: ServerOptions mo;
1405:
1406: initialize_server_options(&mo);
1407: parse_server_config(&mo, "reprocess config", &cfg, user, host, address);
1.168 dtucker 1408: copy_set_server_options(options, &mo, 0);
1.153 dtucker 1409: }
1410:
1.168 dtucker 1411: /* Helper macros */
1412: #define M_CP_INTOPT(n) do {\
1413: if (src->n != -1) \
1414: dst->n = src->n; \
1415: } while (0)
1416: #define M_CP_STROPT(n) do {\
1417: if (src->n != NULL) { \
1418: if (dst->n != NULL) \
1419: xfree(dst->n); \
1420: dst->n = src->n; \
1421: } \
1422: } while(0)
1423:
1424: /*
1425: * Copy any supported values that are set.
1426: *
1.195 jj 1427: * If the preauth flag is set, we do not bother copying the string or
1.168 dtucker 1428: * array values that are not used pre-authentication, because any that we
1429: * do use must be explictly sent in mm_getpwnamallow().
1430: */
1.153 dtucker 1431: void
1.168 dtucker 1432: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 1433: {
1.168 dtucker 1434: M_CP_INTOPT(password_authentication);
1435: M_CP_INTOPT(gss_authentication);
1436: M_CP_INTOPT(rsa_authentication);
1437: M_CP_INTOPT(pubkey_authentication);
1438: M_CP_INTOPT(kerberos_authentication);
1439: M_CP_INTOPT(hostbased_authentication);
1.209 djm 1440: M_CP_INTOPT(hostbased_uses_name_from_packet_only);
1.168 dtucker 1441: M_CP_INTOPT(kbd_interactive_authentication);
1.190 djm 1442: M_CP_INTOPT(zero_knowledge_password_authentication);
1.175 dtucker 1443: M_CP_INTOPT(permit_root_login);
1.188 djm 1444: M_CP_INTOPT(permit_empty_passwd);
1.168 dtucker 1445:
1446: M_CP_INTOPT(allow_tcp_forwarding);
1.178 pyr 1447: M_CP_INTOPT(allow_agent_forwarding);
1.209 djm 1448: M_CP_INTOPT(permit_tun);
1.168 dtucker 1449: M_CP_INTOPT(gateway_ports);
1450: M_CP_INTOPT(x11_display_offset);
1451: M_CP_INTOPT(x11_forwarding);
1452: M_CP_INTOPT(x11_use_localhost);
1.180 djm 1453: M_CP_INTOPT(max_sessions);
1.184 dtucker 1454: M_CP_INTOPT(max_authtries);
1.213 djm 1455: M_CP_INTOPT(ip_qos_interactive);
1456: M_CP_INTOPT(ip_qos_bulk);
1.168 dtucker 1457:
1458: M_CP_STROPT(banner);
1.216 ! djm 1459: M_CP_STROPT(trusted_user_ca_keys);
! 1460: M_CP_STROPT(revoked_keys_file);
! 1461: M_CP_STROPT(authorized_keys_file);
! 1462: M_CP_STROPT(authorized_principals_file);
! 1463:
1.168 dtucker 1464: if (preauth)
1465: return;
1466: M_CP_STROPT(adm_forced_command);
1.176 djm 1467: M_CP_STROPT(chroot_directory);
1.153 dtucker 1468: }
1.168 dtucker 1469:
1470: #undef M_CP_INTOPT
1471: #undef M_CP_STROPT
1.153 dtucker 1472:
1473: void
1474: parse_server_config(ServerOptions *options, const char *filename, Buffer *conf,
1475: const char *user, const char *host, const char *address)
1.134 djm 1476: {
1.153 dtucker 1477: int active, linenum, bad_options = 0;
1.136 dtucker 1478: char *cp, *obuf, *cbuf;
1.134 djm 1479:
1480: debug2("%s: config %s len %d", __func__, filename, buffer_len(conf));
1481:
1.136 dtucker 1482: obuf = cbuf = xstrdup(buffer_ptr(conf));
1.153 dtucker 1483: active = user ? 0 : 1;
1.137 dtucker 1484: linenum = 1;
1.140 deraadt 1485: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.134 djm 1486: if (process_server_config_line(options, cp, filename,
1.153 dtucker 1487: linenum++, &active, user, host, address) != 0)
1.94 markus 1488: bad_options++;
1.1 deraadt 1489: }
1.136 dtucker 1490: xfree(obuf);
1.78 stevesk 1491: if (bad_options > 0)
1492: fatal("%s: terminating, %d bad configuration options",
1493: filename, bad_options);
1.182 dtucker 1494: }
1495:
1496: static const char *
1497: fmt_intarg(ServerOpCodes code, int val)
1498: {
1499: if (code == sAddressFamily) {
1500: switch (val) {
1501: case AF_INET:
1502: return "inet";
1503: case AF_INET6:
1504: return "inet6";
1505: case AF_UNSPEC:
1506: return "any";
1507: default:
1508: return "UNKNOWN";
1509: }
1510: }
1511: if (code == sPermitRootLogin) {
1512: switch (val) {
1513: case PERMIT_NO_PASSWD:
1.191 jmc 1514: return "without-password";
1.182 dtucker 1515: case PERMIT_FORCED_ONLY:
1516: return "forced-commands-only";
1517: case PERMIT_YES:
1518: return "yes";
1519: }
1520: }
1521: if (code == sProtocol) {
1522: switch (val) {
1523: case SSH_PROTO_1:
1524: return "1";
1525: case SSH_PROTO_2:
1526: return "2";
1527: case (SSH_PROTO_1|SSH_PROTO_2):
1528: return "2,1";
1529: default:
1530: return "UNKNOWN";
1531: }
1532: }
1533: if (code == sGatewayPorts && val == 2)
1534: return "clientspecified";
1535: if (code == sCompression && val == COMP_DELAYED)
1536: return "delayed";
1537: switch (val) {
1538: case -1:
1539: return "unset";
1540: case 0:
1541: return "no";
1542: case 1:
1543: return "yes";
1544: }
1545: return "UNKNOWN";
1546: }
1547:
1548: static const char *
1549: lookup_opcode_name(ServerOpCodes code)
1550: {
1551: u_int i;
1552:
1553: for (i = 0; keywords[i].name != NULL; i++)
1554: if (keywords[i].opcode == code)
1555: return(keywords[i].name);
1556: return "UNKNOWN";
1557: }
1558:
1559: static void
1560: dump_cfg_int(ServerOpCodes code, int val)
1561: {
1562: printf("%s %d\n", lookup_opcode_name(code), val);
1563: }
1564:
1565: static void
1566: dump_cfg_fmtint(ServerOpCodes code, int val)
1567: {
1568: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
1569: }
1570:
1571: static void
1572: dump_cfg_string(ServerOpCodes code, const char *val)
1573: {
1574: if (val == NULL)
1575: return;
1576: printf("%s %s\n", lookup_opcode_name(code), val);
1577: }
1578:
1579: static void
1580: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
1581: {
1582: u_int i;
1583:
1584: for (i = 0; i < count; i++)
1585: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
1586: }
1587:
1588: void
1589: dump_config(ServerOptions *o)
1590: {
1591: u_int i;
1592: int ret;
1593: struct addrinfo *ai;
1594: char addr[NI_MAXHOST], port[NI_MAXSERV], *s = NULL;
1595:
1596: /* these are usually at the top of the config */
1597: for (i = 0; i < o->num_ports; i++)
1598: printf("port %d\n", o->ports[i]);
1599: dump_cfg_fmtint(sProtocol, o->protocol);
1600: dump_cfg_fmtint(sAddressFamily, o->address_family);
1601:
1602: /* ListenAddress must be after Port */
1603: for (ai = o->listen_addrs; ai; ai = ai->ai_next) {
1604: if ((ret = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1605: sizeof(addr), port, sizeof(port),
1606: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1607: error("getnameinfo failed: %.100s",
1608: (ret != EAI_SYSTEM) ? gai_strerror(ret) :
1609: strerror(errno));
1610: } else {
1611: if (ai->ai_family == AF_INET6)
1612: printf("listenaddress [%s]:%s\n", addr, port);
1613: else
1614: printf("listenaddress %s:%s\n", addr, port);
1615: }
1616: }
1617:
1618: /* integer arguments */
1619: dump_cfg_int(sServerKeyBits, o->server_key_bits);
1620: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
1621: dump_cfg_int(sKeyRegenerationTime, o->key_regeneration_time);
1622: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
1623: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1.189 djm 1624: dump_cfg_int(sMaxSessions, o->max_sessions);
1.182 dtucker 1625: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
1626: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1627:
1628: /* formatted integer arguments */
1629: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
1630: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
1631: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
1632: dump_cfg_fmtint(sRhostsRSAAuthentication, o->rhosts_rsa_authentication);
1633: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
1634: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
1635: o->hostbased_uses_name_from_packet_only);
1636: dump_cfg_fmtint(sRSAAuthentication, o->rsa_authentication);
1637: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1.187 djm 1638: #ifdef KRB5
1.182 dtucker 1639: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
1640: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
1641: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
1642: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1.187 djm 1643: #endif
1644: #ifdef GSSAPI
1.182 dtucker 1645: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
1646: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1.190 djm 1647: #endif
1648: #ifdef JPAKE
1649: dump_cfg_fmtint(sZeroKnowledgePasswordAuthentication,
1650: o->zero_knowledge_password_authentication);
1.187 djm 1651: #endif
1.182 dtucker 1652: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
1653: dump_cfg_fmtint(sKbdInteractiveAuthentication,
1654: o->kbd_interactive_authentication);
1655: dump_cfg_fmtint(sChallengeResponseAuthentication,
1656: o->challenge_response_authentication);
1657: dump_cfg_fmtint(sPrintMotd, o->print_motd);
1658: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
1659: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
1660: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1661: dump_cfg_fmtint(sStrictModes, o->strict_modes);
1662: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
1663: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
1664: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
1665: dump_cfg_fmtint(sUseLogin, o->use_login);
1666: dump_cfg_fmtint(sCompression, o->compression);
1667: dump_cfg_fmtint(sGatewayPorts, o->gateway_ports);
1668: dump_cfg_fmtint(sUseDNS, o->use_dns);
1669: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1670: dump_cfg_fmtint(sUsePrivilegeSeparation, use_privsep);
1671:
1672: /* string arguments */
1673: dump_cfg_string(sPidFile, o->pid_file);
1674: dump_cfg_string(sXAuthLocation, o->xauth_location);
1675: dump_cfg_string(sCiphers, o->ciphers);
1676: dump_cfg_string(sMacs, o->macs);
1677: dump_cfg_string(sBanner, o->banner);
1678: dump_cfg_string(sAuthorizedKeysFile, o->authorized_keys_file);
1679: dump_cfg_string(sForceCommand, o->adm_forced_command);
1.201 dtucker 1680: dump_cfg_string(sChrootDirectory, o->chroot_directory);
1.204 djm 1681: dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
1682: dump_cfg_string(sRevokedKeys, o->revoked_keys_file);
1.208 djm 1683: dump_cfg_string(sAuthorizedPrincipalsFile,
1684: o->authorized_principals_file);
1.182 dtucker 1685:
1686: /* string arguments requiring a lookup */
1687: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
1688: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
1689:
1690: /* string array arguments */
1691: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
1692: o->host_key_files);
1.203 djm 1693: dump_cfg_strarray(sHostKeyFile, o->num_host_cert_files,
1694: o->host_cert_files);
1.182 dtucker 1695: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
1696: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
1697: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
1698: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
1699: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1700:
1701: /* other arguments */
1702: for (i = 0; i < o->num_subsystems; i++)
1703: printf("subsystem %s %s\n", o->subsystem_name[i],
1704: o->subsystem_args[i]);
1705:
1706: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
1707: o->max_startups_rate, o->max_startups);
1708:
1709: for (i = 0; tunmode_desc[i].val != -1; i++)
1710: if (tunmode_desc[i].val == o->permit_tun) {
1711: s = tunmode_desc[i].text;
1712: break;
1713: }
1714: dump_cfg_string(sPermitTunnel, s);
1.213 djm 1715:
1.214 stevesk 1716: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
1717: printf("%s\n", iptos2str(o->ip_qos_bulk));
1.182 dtucker 1718:
1719: channel_print_adm_permitted_opens();
1.1 deraadt 1720: }
![[BACK]](/icons/back.gif){kind=icon}
Return to servconf.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh