Annotation of src/usr.bin/ssh/servconf.c, Revision 1.280
1.226 dtucker 1:
1.280 ! deraadt 2: /* $OpenBSD: servconf.c,v 1.279 2015/07/31 15:38:09 chris Exp $ */
1.1 deraadt 3: /*
1.26 deraadt 4: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5: * All rights reserved
1.34 markus 6: *
1.51 deraadt 7: * As far as I am concerned, the code I have written for this software
8: * can be used freely for any purpose. Any derived versions of this
9: * software must be clearly marked as such, and if the derived work is
10: * incompatible with the protocol description in the RFC file, it must be
11: * called by a name other than "ssh" or "Secure Shell".
1.26 deraadt 12: */
1.1 deraadt 13:
1.152 stevesk 14: #include <sys/types.h>
15: #include <sys/socket.h>
1.179 djm 16: #include <sys/queue.h>
1.154 stevesk 17:
1.213 djm 18: #include <netinet/in.h>
19: #include <netinet/ip.h>
20:
1.235 dtucker 21: #include <ctype.h>
1.154 stevesk 22: #include <netdb.h>
1.165 dtucker 23: #include <pwd.h>
1.162 stevesk 24: #include <stdio.h>
1.161 stevesk 25: #include <stdlib.h>
1.160 stevesk 26: #include <string.h>
1.164 deraadt 27: #include <signal.h>
1.155 stevesk 28: #include <unistd.h>
1.259 deraadt 29: #include <limits.h>
1.164 deraadt 30: #include <stdarg.h>
1.182 dtucker 31: #include <errno.h>
1.236 dtucker 32: #include <util.h>
1.1 deraadt 33:
1.164 deraadt 34: #include "xmalloc.h"
1.1 deraadt 35: #include "ssh.h"
1.62 markus 36: #include "log.h"
1.164 deraadt 37: #include "buffer.h"
1.251 millert 38: #include "misc.h"
1.1 deraadt 39: #include "servconf.h"
1.33 markus 40: #include "compat.h"
1.60 markus 41: #include "pathnames.h"
1.62 markus 42: #include "cipher.h"
1.164 deraadt 43: #include "key.h"
1.66 markus 44: #include "kex.h"
45: #include "mac.h"
1.153 dtucker 46: #include "match.h"
1.156 dtucker 47: #include "channels.h"
1.165 dtucker 48: #include "groupaccess.h"
1.226 dtucker 49: #include "canohost.h"
50: #include "packet.h"
1.232 djm 51: #include "hostfile.h"
52: #include "auth.h"
1.252 djm 53: #include "myproposal.h"
1.256 djm 54: #include "digest.h"
1.1 deraadt 55:
1.194 djm 56: static void add_listen_addr(ServerOptions *, char *, int);
57: static void add_one_listen_addr(ServerOptions *, char *, int);
1.29 markus 58:
1.102 provos 59: /* Use of privilege separation or not */
60: extern int use_privsep;
1.153 dtucker 61: extern Buffer cfg;
1.62 markus 62:
1.1 deraadt 63: /* Initializes the server options to their default values. */
64:
1.34 markus 65: void
1.25 markus 66: initialize_server_options(ServerOptions *options)
1.1 deraadt 67: {
1.25 markus 68: memset(options, 0, sizeof(*options));
1.29 markus 69: options->num_ports = 0;
70: options->ports_from_cmdline = 0;
1.266 dtucker 71: options->queued_listen_addrs = NULL;
72: options->num_queued_listens = 0;
1.29 markus 73: options->listen_addrs = NULL;
1.138 djm 74: options->address_family = -1;
1.54 markus 75: options->num_host_key_files = 0;
1.203 djm 76: options->num_host_cert_files = 0;
1.240 markus 77: options->host_key_agent = NULL;
1.36 markus 78: options->pid_file = NULL;
1.25 markus 79: options->server_key_bits = -1;
80: options->login_grace_time = -1;
81: options->key_regeneration_time = -1;
1.279 chris 82: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 83: options->ignore_rhosts = -1;
84: options->ignore_user_known_hosts = -1;
85: options->print_motd = -1;
1.72 stevesk 86: options->print_lastlog = -1;
1.25 markus 87: options->x11_forwarding = -1;
88: options->x11_display_offset = -1;
1.99 stevesk 89: options->x11_use_localhost = -1;
1.244 djm 90: options->permit_tty = -1;
1.250 djm 91: options->permit_user_rc = -1;
1.42 markus 92: options->xauth_location = NULL;
1.25 markus 93: options->strict_modes = -1;
1.129 markus 94: options->tcp_keep_alive = -1;
1.101 markus 95: options->log_facility = SYSLOG_FACILITY_NOT_SET;
96: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.25 markus 97: options->rhosts_rsa_authentication = -1;
1.75 markus 98: options->hostbased_authentication = -1;
99: options->hostbased_uses_name_from_packet_only = -1;
1.258 djm 100: options->hostbased_key_types = NULL;
1.276 markus 101: options->hostkeyalgorithms = NULL;
1.25 markus 102: options->rsa_authentication = -1;
1.54 markus 103: options->pubkey_authentication = -1;
1.258 djm 104: options->pubkey_key_types = NULL;
1.25 markus 105: options->kerberos_authentication = -1;
106: options->kerberos_or_local_passwd = -1;
107: options->kerberos_ticket_cleanup = -1;
1.130 jakob 108: options->kerberos_get_afs_token = -1;
1.125 markus 109: options->gss_authentication=-1;
110: options->gss_cleanup_creds = -1;
1.271 djm 111: options->gss_strict_acceptor = -1;
1.25 markus 112: options->password_authentication = -1;
1.52 markus 113: options->kbd_interactive_authentication = -1;
1.80 markus 114: options->challenge_response_authentication = -1;
1.25 markus 115: options->permit_empty_passwd = -1;
1.113 markus 116: options->permit_user_env = -1;
1.25 markus 117: options->use_login = -1;
1.111 markus 118: options->compression = -1;
1.235 dtucker 119: options->rekey_limit = -1;
120: options->rekey_interval = -1;
1.53 markus 121: options->allow_tcp_forwarding = -1;
1.251 millert 122: options->allow_streamlocal_forwarding = -1;
1.178 pyr 123: options->allow_agent_forwarding = -1;
1.25 markus 124: options->num_allow_users = 0;
125: options->num_deny_users = 0;
126: options->num_allow_groups = 0;
127: options->num_deny_groups = 0;
1.33 markus 128: options->ciphers = NULL;
1.66 markus 129: options->macs = NULL;
1.211 djm 130: options->kex_algorithms = NULL;
1.33 markus 131: options->protocol = SSH_PROTO_UNKNOWN;
1.251 millert 132: options->fwd_opts.gateway_ports = -1;
133: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
134: options->fwd_opts.streamlocal_bind_unlink = -1;
1.43 jakob 135: options->num_subsystems = 0;
1.50 markus 136: options->max_startups_begin = -1;
137: options->max_startups_rate = -1;
1.46 markus 138: options->max_startups = -1;
1.133 dtucker 139: options->max_authtries = -1;
1.180 djm 140: options->max_sessions = -1;
1.57 markus 141: options->banner = NULL;
1.122 markus 142: options->use_dns = -1;
1.77 beck 143: options->client_alive_interval = -1;
144: options->client_alive_count_max = -1;
1.219 djm 145: options->num_authkeys_files = 0;
1.131 djm 146: options->num_accept_env = 0;
1.145 reyk 147: options->permit_tun = -1;
1.159 dtucker 148: options->num_permitted_opens = -1;
1.158 dtucker 149: options->adm_forced_command = NULL;
1.176 djm 150: options->chroot_directory = NULL;
1.231 djm 151: options->authorized_keys_command = NULL;
152: options->authorized_keys_command_user = NULL;
1.204 djm 153: options->revoked_keys_file = NULL;
154: options->trusted_user_ca_keys = NULL;
1.208 djm 155: options->authorized_principals_file = NULL;
1.270 djm 156: options->authorized_principals_command = NULL;
157: options->authorized_principals_command_user = NULL;
1.213 djm 158: options->ip_qos_interactive = -1;
159: options->ip_qos_bulk = -1;
1.225 djm 160: options->version_addendum = NULL;
1.256 djm 161: options->fingerprint_hash = -1;
1.1 deraadt 162: }
163:
1.257 djm 164: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
165: static int
166: option_clear_or_none(const char *o)
167: {
168: return o == NULL || strcasecmp(o, "none") == 0;
169: }
170:
1.34 markus 171: void
1.25 markus 172: fill_default_server_options(ServerOptions *options)
1.1 deraadt 173: {
1.257 djm 174: int i;
175:
1.54 markus 176: if (options->protocol == SSH_PROTO_UNKNOWN)
1.196 markus 177: options->protocol = SSH_PROTO_2;
1.54 markus 178: if (options->num_host_key_files == 0) {
179: /* fill default hostkeys for protocols */
180: if (options->protocol & SSH_PROTO_1)
1.97 stevesk 181: options->host_key_files[options->num_host_key_files++] =
182: _PATH_HOST_KEY_FILE;
183: if (options->protocol & SSH_PROTO_2) {
184: options->host_key_files[options->num_host_key_files++] =
185: _PATH_HOST_RSA_KEY_FILE;
186: options->host_key_files[options->num_host_key_files++] =
187: _PATH_HOST_DSA_KEY_FILE;
1.210 naddy 188: options->host_key_files[options->num_host_key_files++] =
189: _PATH_HOST_ECDSA_KEY_FILE;
1.248 markus 190: options->host_key_files[options->num_host_key_files++] =
191: _PATH_HOST_ED25519_KEY_FILE;
1.97 stevesk 192: }
1.54 markus 193: }
1.203 djm 194: /* No certificates by default */
1.29 markus 195: if (options->num_ports == 0)
196: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.266 dtucker 197: if (options->address_family == -1)
198: options->address_family = AF_UNSPEC;
1.29 markus 199: if (options->listen_addrs == NULL)
1.76 stevesk 200: add_listen_addr(options, NULL, 0);
1.36 markus 201: if (options->pid_file == NULL)
1.257 djm 202: options->pid_file = xstrdup(_PATH_SSH_DAEMON_PID_FILE);
1.25 markus 203: if (options->server_key_bits == -1)
1.185 djm 204: options->server_key_bits = 1024;
1.25 markus 205: if (options->login_grace_time == -1)
1.115 stevesk 206: options->login_grace_time = 120;
1.25 markus 207: if (options->key_regeneration_time == -1)
208: options->key_regeneration_time = 3600;
1.67 markus 209: if (options->permit_root_login == PERMIT_NOT_SET)
1.279 chris 210: options->permit_root_login = PERMIT_NO_PASSWD;
1.25 markus 211: if (options->ignore_rhosts == -1)
1.30 markus 212: options->ignore_rhosts = 1;
1.25 markus 213: if (options->ignore_user_known_hosts == -1)
214: options->ignore_user_known_hosts = 0;
215: if (options->print_motd == -1)
216: options->print_motd = 1;
1.72 stevesk 217: if (options->print_lastlog == -1)
218: options->print_lastlog = 1;
1.25 markus 219: if (options->x11_forwarding == -1)
1.30 markus 220: options->x11_forwarding = 0;
1.25 markus 221: if (options->x11_display_offset == -1)
1.30 markus 222: options->x11_display_offset = 10;
1.99 stevesk 223: if (options->x11_use_localhost == -1)
224: options->x11_use_localhost = 1;
1.42 markus 225: if (options->xauth_location == NULL)
1.257 djm 226: options->xauth_location = xstrdup(_PATH_XAUTH);
1.244 djm 227: if (options->permit_tty == -1)
228: options->permit_tty = 1;
1.250 djm 229: if (options->permit_user_rc == -1)
230: options->permit_user_rc = 1;
1.25 markus 231: if (options->strict_modes == -1)
232: options->strict_modes = 1;
1.129 markus 233: if (options->tcp_keep_alive == -1)
234: options->tcp_keep_alive = 1;
1.101 markus 235: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
1.25 markus 236: options->log_facility = SYSLOG_FACILITY_AUTH;
1.101 markus 237: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.58 markus 238: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 239: if (options->rhosts_rsa_authentication == -1)
1.30 markus 240: options->rhosts_rsa_authentication = 0;
1.75 markus 241: if (options->hostbased_authentication == -1)
242: options->hostbased_authentication = 0;
243: if (options->hostbased_uses_name_from_packet_only == -1)
244: options->hostbased_uses_name_from_packet_only = 0;
1.276 markus 245: if (options->hostkeyalgorithms == NULL)
246: options->hostkeyalgorithms = xstrdup(KEX_DEFAULT_PK_ALG);
1.25 markus 247: if (options->rsa_authentication == -1)
248: options->rsa_authentication = 1;
1.54 markus 249: if (options->pubkey_authentication == -1)
250: options->pubkey_authentication = 1;
1.25 markus 251: if (options->kerberos_authentication == -1)
1.107 markus 252: options->kerberos_authentication = 0;
1.25 markus 253: if (options->kerberos_or_local_passwd == -1)
254: options->kerberos_or_local_passwd = 1;
255: if (options->kerberos_ticket_cleanup == -1)
256: options->kerberos_ticket_cleanup = 1;
1.130 jakob 257: if (options->kerberos_get_afs_token == -1)
258: options->kerberos_get_afs_token = 0;
1.125 markus 259: if (options->gss_authentication == -1)
260: options->gss_authentication = 0;
261: if (options->gss_cleanup_creds == -1)
262: options->gss_cleanup_creds = 1;
1.271 djm 263: if (options->gss_strict_acceptor == -1)
264: options->gss_strict_acceptor = 0;
1.25 markus 265: if (options->password_authentication == -1)
266: options->password_authentication = 1;
1.52 markus 267: if (options->kbd_interactive_authentication == -1)
268: options->kbd_interactive_authentication = 0;
1.80 markus 269: if (options->challenge_response_authentication == -1)
270: options->challenge_response_authentication = 1;
1.25 markus 271: if (options->permit_empty_passwd == -1)
1.30 markus 272: options->permit_empty_passwd = 0;
1.113 markus 273: if (options->permit_user_env == -1)
274: options->permit_user_env = 0;
1.25 markus 275: if (options->use_login == -1)
276: options->use_login = 0;
1.111 markus 277: if (options->compression == -1)
1.143 markus 278: options->compression = COMP_DELAYED;
1.235 dtucker 279: if (options->rekey_limit == -1)
280: options->rekey_limit = 0;
281: if (options->rekey_interval == -1)
282: options->rekey_interval = 0;
1.53 markus 283: if (options->allow_tcp_forwarding == -1)
1.233 djm 284: options->allow_tcp_forwarding = FORWARD_ALLOW;
1.251 millert 285: if (options->allow_streamlocal_forwarding == -1)
286: options->allow_streamlocal_forwarding = FORWARD_ALLOW;
1.178 pyr 287: if (options->allow_agent_forwarding == -1)
288: options->allow_agent_forwarding = 1;
1.251 millert 289: if (options->fwd_opts.gateway_ports == -1)
290: options->fwd_opts.gateway_ports = 0;
1.46 markus 291: if (options->max_startups == -1)
1.234 dtucker 292: options->max_startups = 100;
1.50 markus 293: if (options->max_startups_rate == -1)
1.234 dtucker 294: options->max_startups_rate = 30; /* 30% */
1.50 markus 295: if (options->max_startups_begin == -1)
1.234 dtucker 296: options->max_startups_begin = 10;
1.133 dtucker 297: if (options->max_authtries == -1)
298: options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
1.180 djm 299: if (options->max_sessions == -1)
300: options->max_sessions = DEFAULT_SESSIONS_MAX;
1.122 markus 301: if (options->use_dns == -1)
1.260 deraadt 302: options->use_dns = 0;
1.77 beck 303: if (options->client_alive_interval == -1)
1.95 deraadt 304: options->client_alive_interval = 0;
1.77 beck 305: if (options->client_alive_count_max == -1)
306: options->client_alive_count_max = 3;
1.219 djm 307: if (options->num_authkeys_files == 0) {
308: options->authorized_keys_files[options->num_authkeys_files++] =
309: xstrdup(_PATH_SSH_USER_PERMITTED_KEYS);
310: options->authorized_keys_files[options->num_authkeys_files++] =
311: xstrdup(_PATH_SSH_USER_PERMITTED_KEYS2);
312: }
1.145 reyk 313: if (options->permit_tun == -1)
1.146 reyk 314: options->permit_tun = SSH_TUNMODE_NO;
1.213 djm 315: if (options->ip_qos_interactive == -1)
316: options->ip_qos_interactive = IPTOS_LOWDELAY;
317: if (options->ip_qos_bulk == -1)
318: options->ip_qos_bulk = IPTOS_THROUGHPUT;
1.225 djm 319: if (options->version_addendum == NULL)
320: options->version_addendum = xstrdup("");
1.251 millert 321: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
322: options->fwd_opts.streamlocal_bind_mask = 0177;
323: if (options->fwd_opts.streamlocal_bind_unlink == -1)
324: options->fwd_opts.streamlocal_bind_unlink = 0;
1.256 djm 325: if (options->fingerprint_hash == -1)
326: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.277 djm 327:
328: if (kex_assemble_names(KEX_SERVER_ENCRYPT, &options->ciphers) != 0 ||
329: kex_assemble_names(KEX_SERVER_MAC, &options->macs) != 0 ||
330: kex_assemble_names(KEX_SERVER_KEX, &options->kex_algorithms) != 0 ||
331: kex_assemble_names(KEX_DEFAULT_PK_ALG,
332: &options->hostbased_key_types) != 0 ||
333: kex_assemble_names(KEX_DEFAULT_PK_ALG,
334: &options->pubkey_key_types) != 0)
335: fatal("%s: kex_assemble_names failed", __func__);
336:
1.110 markus 337: /* Turn privilege separation on by default */
1.102 provos 338: if (use_privsep == -1)
1.228 djm 339: use_privsep = PRIVSEP_NOSANDBOX;
1.257 djm 340:
341: #define CLEAR_ON_NONE(v) \
342: do { \
343: if (option_clear_or_none(v)) { \
344: free(v); \
345: v = NULL; \
346: } \
347: } while(0)
348: CLEAR_ON_NONE(options->pid_file);
349: CLEAR_ON_NONE(options->xauth_location);
350: CLEAR_ON_NONE(options->banner);
351: CLEAR_ON_NONE(options->trusted_user_ca_keys);
352: CLEAR_ON_NONE(options->revoked_keys_file);
1.267 djm 353: CLEAR_ON_NONE(options->authorized_principals_file);
1.257 djm 354: for (i = 0; i < options->num_host_key_files; i++)
355: CLEAR_ON_NONE(options->host_key_files[i]);
356: for (i = 0; i < options->num_host_cert_files; i++)
357: CLEAR_ON_NONE(options->host_cert_files[i]);
358: #undef CLEAR_ON_NONE
1.1 deraadt 359: }
360:
361: /* Keyword tokens. */
1.25 markus 362: typedef enum {
363: sBadOption, /* == unknown option */
1.258 djm 364: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime,
365: sKeyRegenerationTime, sPermitRootLogin, sLogFacility, sLogLevel,
1.124 markus 366: sRhostsRSAAuthentication, sRSAAuthentication,
1.25 markus 367: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.130 jakob 368: sKerberosGetAFSToken,
1.123 markus 369: sKerberosTgtPassing, sChallengeResponseAuthentication,
1.138 djm 370: sPasswordAuthentication, sKbdInteractiveAuthentication,
371: sListenAddress, sAddressFamily,
1.72 stevesk 372: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
1.99 stevesk 373: sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
1.244 djm 374: sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
1.113 markus 375: sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression,
1.235 dtucker 376: sRekeyLimit, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 377: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.258 djm 378: sGatewayPorts, sPubkeyAuthentication, sPubkeyAcceptedKeyTypes,
379: sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
1.122 markus 380: sBanner, sUseDNS, sHostbasedAuthentication,
1.258 djm 381: sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
1.276 markus 382: sHostKeyAlgorithms,
1.258 djm 383: sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
1.271 djm 384: sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
385: sAcceptEnv, sPermitTunnel,
1.176 djm 386: sMatch, sPermitOpen, sForceCommand, sChrootDirectory,
1.200 dtucker 387: sUsePrivilegeSeparation, sAllowAgentForwarding,
1.249 djm 388: sHostCertificate,
1.208 djm 389: sRevokedKeys, sTrustedUserCAKeys, sAuthorizedPrincipalsFile,
1.270 djm 390: sAuthorizedPrincipalsCommand, sAuthorizedPrincipalsCommandUser,
1.225 djm 391: sKexAlgorithms, sIPQoS, sVersionAddendum,
1.231 djm 392: sAuthorizedKeysCommand, sAuthorizedKeysCommandUser,
1.250 djm 393: sAuthenticationMethods, sHostKeyAgent, sPermitUserRC,
1.251 millert 394: sStreamLocalBindMask, sStreamLocalBindUnlink,
1.256 djm 395: sAllowStreamLocalForwarding, sFingerprintHash,
1.121 jakob 396: sDeprecated, sUnsupported
1.1 deraadt 397: } ServerOpCodes;
398:
1.153 dtucker 399: #define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */
400: #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
401: #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
402:
1.1 deraadt 403: /* Textual representation of the tokens. */
1.25 markus 404: static struct {
405: const char *name;
406: ServerOpCodes opcode;
1.153 dtucker 407: u_int flags;
1.25 markus 408: } keywords[] = {
1.153 dtucker 409: { "port", sPort, SSHCFG_GLOBAL },
410: { "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
411: { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
1.240 markus 412: { "hostkeyagent", sHostKeyAgent, SSHCFG_GLOBAL },
1.153 dtucker 413: { "pidfile", sPidFile, SSHCFG_GLOBAL },
414: { "serverkeybits", sServerKeyBits, SSHCFG_GLOBAL },
415: { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
416: { "keyregenerationinterval", sKeyRegenerationTime, SSHCFG_GLOBAL },
1.175 dtucker 417: { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
1.153 dtucker 418: { "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
419: { "loglevel", sLogLevel, SSHCFG_GLOBAL },
420: { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
1.168 dtucker 421: { "rhostsrsaauthentication", sRhostsRSAAuthentication, SSHCFG_ALL },
422: { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
1.209 djm 423: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
1.258 djm 424: { "hostbasedacceptedkeytypes", sHostbasedAcceptedKeyTypes, SSHCFG_ALL },
1.276 markus 425: { "hostkeyalgorithms", sHostKeyAlgorithms, SSHCFG_GLOBAL },
1.168 dtucker 426: { "rsaauthentication", sRSAAuthentication, SSHCFG_ALL },
427: { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
1.258 djm 428: { "pubkeyacceptedkeytypes", sPubkeyAcceptedKeyTypes, SSHCFG_ALL },
1.153 dtucker 429: { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
1.123 markus 430: #ifdef KRB5
1.168 dtucker 431: { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
1.153 dtucker 432: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
433: { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
434: { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
1.121 jakob 435: #else
1.168 dtucker 436: { "kerberosauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 437: { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
438: { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
439: { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
1.126 markus 440: #endif
1.153 dtucker 441: { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
442: { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 443: #ifdef GSSAPI
1.168 dtucker 444: { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
1.153 dtucker 445: { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
1.271 djm 446: { "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
1.125 markus 447: #else
1.168 dtucker 448: { "gssapiauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 449: { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
1.271 djm 450: { "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 451: #endif
1.168 dtucker 452: { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
453: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
1.170 dtucker 454: { "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
1.153 dtucker 455: { "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */
456: { "checkmail", sDeprecated, SSHCFG_GLOBAL },
457: { "listenaddress", sListenAddress, SSHCFG_GLOBAL },
458: { "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
459: { "printmotd", sPrintMotd, SSHCFG_GLOBAL },
460: { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
461: { "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL },
462: { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
1.157 dtucker 463: { "x11forwarding", sX11Forwarding, SSHCFG_ALL },
464: { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
465: { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
1.153 dtucker 466: { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
467: { "strictmodes", sStrictModes, SSHCFG_GLOBAL },
1.188 djm 468: { "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
1.153 dtucker 469: { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
470: { "uselogin", sUseLogin, SSHCFG_GLOBAL },
471: { "compression", sCompression, SSHCFG_GLOBAL },
1.235 dtucker 472: { "rekeylimit", sRekeyLimit, SSHCFG_ALL },
1.153 dtucker 473: { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
474: { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
475: { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
1.178 pyr 476: { "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
1.227 markus 477: { "allowusers", sAllowUsers, SSHCFG_ALL },
478: { "denyusers", sDenyUsers, SSHCFG_ALL },
479: { "allowgroups", sAllowGroups, SSHCFG_ALL },
480: { "denygroups", sDenyGroups, SSHCFG_ALL },
1.153 dtucker 481: { "ciphers", sCiphers, SSHCFG_GLOBAL },
482: { "macs", sMacs, SSHCFG_GLOBAL },
483: { "protocol", sProtocol, SSHCFG_GLOBAL },
484: { "gatewayports", sGatewayPorts, SSHCFG_ALL },
485: { "subsystem", sSubsystem, SSHCFG_GLOBAL },
486: { "maxstartups", sMaxStartups, SSHCFG_GLOBAL },
1.184 dtucker 487: { "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
1.180 djm 488: { "maxsessions", sMaxSessions, SSHCFG_ALL },
1.168 dtucker 489: { "banner", sBanner, SSHCFG_ALL },
1.153 dtucker 490: { "usedns", sUseDNS, SSHCFG_GLOBAL },
491: { "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
492: { "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
493: { "clientaliveinterval", sClientAliveInterval, SSHCFG_GLOBAL },
494: { "clientalivecountmax", sClientAliveCountMax, SSHCFG_GLOBAL },
1.209 djm 495: { "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_ALL },
1.219 djm 496: { "authorizedkeysfile2", sDeprecated, SSHCFG_ALL },
1.153 dtucker 497: { "useprivilegeseparation", sUsePrivilegeSeparation, SSHCFG_GLOBAL},
1.227 markus 498: { "acceptenv", sAcceptEnv, SSHCFG_ALL },
1.209 djm 499: { "permittunnel", sPermitTunnel, SSHCFG_ALL },
1.244 djm 500: { "permittty", sPermitTTY, SSHCFG_ALL },
1.250 djm 501: { "permituserrc", sPermitUserRC, SSHCFG_ALL },
1.153 dtucker 502: { "match", sMatch, SSHCFG_ALL },
1.156 dtucker 503: { "permitopen", sPermitOpen, SSHCFG_ALL },
1.158 dtucker 504: { "forcecommand", sForceCommand, SSHCFG_ALL },
1.176 djm 505: { "chrootdirectory", sChrootDirectory, SSHCFG_ALL },
1.203 djm 506: { "hostcertificate", sHostCertificate, SSHCFG_GLOBAL },
1.204 djm 507: { "revokedkeys", sRevokedKeys, SSHCFG_ALL },
508: { "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
1.209 djm 509: { "authorizedprincipalsfile", sAuthorizedPrincipalsFile, SSHCFG_ALL },
1.211 djm 510: { "kexalgorithms", sKexAlgorithms, SSHCFG_GLOBAL },
1.213 djm 511: { "ipqos", sIPQoS, SSHCFG_ALL },
1.231 djm 512: { "authorizedkeyscommand", sAuthorizedKeysCommand, SSHCFG_ALL },
513: { "authorizedkeyscommanduser", sAuthorizedKeysCommandUser, SSHCFG_ALL },
1.270 djm 514: { "authorizedprincipalscommand", sAuthorizedPrincipalsCommand, SSHCFG_ALL },
515: { "authorizedprincipalscommanduser", sAuthorizedPrincipalsCommandUser, SSHCFG_ALL },
1.225 djm 516: { "versionaddendum", sVersionAddendum, SSHCFG_GLOBAL },
1.232 djm 517: { "authenticationmethods", sAuthenticationMethods, SSHCFG_ALL },
1.251 millert 518: { "streamlocalbindmask", sStreamLocalBindMask, SSHCFG_ALL },
519: { "streamlocalbindunlink", sStreamLocalBindUnlink, SSHCFG_ALL },
520: { "allowstreamlocalforwarding", sAllowStreamLocalForwarding, SSHCFG_ALL },
1.256 djm 521: { "fingerprinthash", sFingerprintHash, SSHCFG_GLOBAL },
1.153 dtucker 522: { NULL, sBadOption, 0 }
1.1 deraadt 523: };
524:
1.182 dtucker 525: static struct {
526: int val;
527: char *text;
528: } tunmode_desc[] = {
529: { SSH_TUNMODE_NO, "no" },
530: { SSH_TUNMODE_POINTOPOINT, "point-to-point" },
531: { SSH_TUNMODE_ETHERNET, "ethernet" },
532: { SSH_TUNMODE_YES, "yes" },
533: { -1, NULL }
534: };
535:
1.27 markus 536: /*
1.73 stevesk 537: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 538: */
1.1 deraadt 539:
1.34 markus 540: static ServerOpCodes
1.25 markus 541: parse_token(const char *cp, const char *filename,
1.153 dtucker 542: int linenum, u_int *flags)
1.1 deraadt 543: {
1.55 markus 544: u_int i;
1.1 deraadt 545:
1.25 markus 546: for (i = 0; keywords[i].name; i++)
1.153 dtucker 547: if (strcasecmp(cp, keywords[i].name) == 0) {
548: *flags = keywords[i].flags;
1.25 markus 549: return keywords[i].opcode;
1.153 dtucker 550: }
1.25 markus 551:
1.78 stevesk 552: error("%s: line %d: Bad configuration option: %s",
553: filename, linenum, cp);
1.25 markus 554: return sBadOption;
1.1 deraadt 555: }
556:
1.202 djm 557: char *
558: derelativise_path(const char *path)
559: {
1.259 deraadt 560: char *expanded, *ret, cwd[PATH_MAX];
1.202 djm 561:
1.257 djm 562: if (strcasecmp(path, "none") == 0)
563: return xstrdup("none");
1.202 djm 564: expanded = tilde_expand_filename(path, getuid());
565: if (*expanded == '/')
566: return expanded;
1.207 djm 567: if (getcwd(cwd, sizeof(cwd)) == NULL)
1.202 djm 568: fatal("%s: getcwd: %s", __func__, strerror(errno));
569: xasprintf(&ret, "%s/%s", cwd, expanded);
1.239 djm 570: free(expanded);
1.202 djm 571: return ret;
572: }
573:
1.84 itojun 574: static void
1.194 djm 575: add_listen_addr(ServerOptions *options, char *addr, int port)
1.74 stevesk 576: {
1.142 djm 577: u_int i;
1.74 stevesk 578:
1.76 stevesk 579: if (port == 0)
1.74 stevesk 580: for (i = 0; i < options->num_ports; i++)
581: add_one_listen_addr(options, addr, options->ports[i]);
582: else
1.76 stevesk 583: add_one_listen_addr(options, addr, port);
1.74 stevesk 584: }
585:
1.84 itojun 586: static void
1.194 djm 587: add_one_listen_addr(ServerOptions *options, char *addr, int port)
1.29 markus 588: {
589: struct addrinfo hints, *ai, *aitop;
590: char strport[NI_MAXSERV];
591: int gaierr;
592:
1.74 stevesk 593: memset(&hints, 0, sizeof(hints));
1.138 djm 594: hints.ai_family = options->address_family;
1.74 stevesk 595: hints.ai_socktype = SOCK_STREAM;
596: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
1.194 djm 597: snprintf(strport, sizeof strport, "%d", port);
1.74 stevesk 598: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
599: fatal("bad addr or host: %s (%s)",
600: addr ? addr : "<NULL>",
1.173 dtucker 601: ssh_gai_strerror(gaierr));
1.74 stevesk 602: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
603: ;
604: ai->ai_next = options->listen_addrs;
605: options->listen_addrs = aitop;
1.29 markus 606: }
607:
1.266 dtucker 608: /*
609: * Queue a ListenAddress to be processed once we have all of the Ports
610: * and AddressFamily options.
611: */
612: static void
613: queue_listen_addr(ServerOptions *options, char *addr, int port)
614: {
615: options->queued_listen_addrs = xreallocarray(
616: options->queued_listen_addrs, options->num_queued_listens + 1,
617: sizeof(addr));
618: options->queued_listen_ports = xreallocarray(
619: options->queued_listen_ports, options->num_queued_listens + 1,
620: sizeof(port));
621: options->queued_listen_addrs[options->num_queued_listens] =
622: xstrdup(addr);
623: options->queued_listen_ports[options->num_queued_listens] = port;
624: options->num_queued_listens++;
625: }
626:
627: /*
628: * Process queued (text) ListenAddress entries.
629: */
630: static void
631: process_queued_listen_addrs(ServerOptions *options)
632: {
633: u_int i;
634:
635: if (options->num_ports == 0)
636: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
637: if (options->address_family == -1)
638: options->address_family = AF_UNSPEC;
639:
640: for (i = 0; i < options->num_queued_listens; i++) {
641: add_listen_addr(options, options->queued_listen_addrs[i],
642: options->queued_listen_ports[i]);
643: free(options->queued_listen_addrs[i]);
644: options->queued_listen_addrs[i] = NULL;
645: }
646: free(options->queued_listen_addrs);
647: options->queued_listen_addrs = NULL;
648: free(options->queued_listen_ports);
649: options->queued_listen_ports = NULL;
650: options->num_queued_listens = 0;
651: }
652:
1.226 dtucker 653: struct connection_info *
654: get_connection_info(int populate, int use_dns)
655: {
656: static struct connection_info ci;
657:
658: if (!populate)
659: return &ci;
660: ci.host = get_canonical_hostname(use_dns);
661: ci.address = get_remote_ipaddr();
662: ci.laddress = get_local_ipaddr(packet_get_connection_in());
663: ci.lport = get_local_port();
664: return &ci;
665: }
666:
1.153 dtucker 667: /*
668: * The strategy for the Match blocks is that the config file is parsed twice.
669: *
670: * The first time is at startup. activep is initialized to 1 and the
671: * directives in the global context are processed and acted on. Hitting a
672: * Match directive unsets activep and the directives inside the block are
673: * checked for syntax only.
674: *
675: * The second time is after a connection has been established but before
676: * authentication. activep is initialized to 2 and global config directives
677: * are ignored since they have already been processed. If the criteria in a
678: * Match block is met, activep is set and the subsequent directives
679: * processed and actioned until EOF or another Match block unsets it. Any
680: * options set are copied into the main server config.
681: *
682: * Potential additions/improvements:
683: * - Add Match support for pre-kex directives, eg Protocol, Ciphers.
684: *
685: * - Add a Tag directive (idea from David Leonard) ala pf, eg:
686: * Match Address 192.168.0.*
687: * Tag trusted
688: * Match Group wheel
689: * Tag trusted
690: * Match Tag trusted
691: * AllowTcpForwarding yes
692: * GatewayPorts clientspecified
693: * [...]
694: *
695: * - Add a PermittedChannelRequests directive
696: * Match Group shell
697: * PermittedChannelRequests session,forwarded-tcpip
698: */
699:
700: static int
1.165 dtucker 701: match_cfg_line_group(const char *grps, int line, const char *user)
702: {
703: int result = 0;
704: struct passwd *pw;
705:
706: if (user == NULL)
707: goto out;
708:
709: if ((pw = getpwnam(user)) == NULL) {
710: debug("Can't match group at line %d because user %.100s does "
711: "not exist", line, user);
712: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
713: debug("Can't Match group because user %.100s not in any group "
714: "at line %d", user, line);
1.186 djm 715: } else if (ga_match_pattern_list(grps) != 1) {
716: debug("user %.100s does not match group list %.100s at line %d",
717: user, grps, line);
1.165 dtucker 718: } else {
1.186 djm 719: debug("user %.100s matched group list %.100s at line %d", user,
720: grps, line);
1.165 dtucker 721: result = 1;
722: }
723: out:
724: ga_free();
725: return result;
726: }
727:
1.226 dtucker 728: /*
1.230 dtucker 729: * All of the attributes on a single Match line are ANDed together, so we need
1.242 dtucker 730: * to check every attribute and set the result to zero if any attribute does
1.230 dtucker 731: * not match.
1.226 dtucker 732: */
1.165 dtucker 733: static int
1.226 dtucker 734: match_cfg_line(char **condition, int line, struct connection_info *ci)
1.153 dtucker 735: {
1.243 dtucker 736: int result = 1, attributes = 0, port;
1.153 dtucker 737: char *arg, *attrib, *cp = *condition;
738:
1.226 dtucker 739: if (ci == NULL)
1.153 dtucker 740: debug3("checking syntax for 'Match %s'", cp);
741: else
1.226 dtucker 742: debug3("checking match for '%s' user %s host %s addr %s "
743: "laddr %s lport %d", cp, ci->user ? ci->user : "(null)",
744: ci->host ? ci->host : "(null)",
745: ci->address ? ci->address : "(null)",
746: ci->laddress ? ci->laddress : "(null)", ci->lport);
1.153 dtucker 747:
748: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
1.243 dtucker 749: attributes++;
750: if (strcasecmp(attrib, "all") == 0) {
751: if (attributes != 1 ||
752: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
753: error("'all' cannot be combined with other "
754: "Match attributes");
755: return -1;
756: }
757: *condition = cp;
758: return 1;
759: }
1.153 dtucker 760: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
761: error("Missing Match criteria for %s", attrib);
762: return -1;
763: }
764: if (strcasecmp(attrib, "user") == 0) {
1.226 dtucker 765: if (ci == NULL || ci->user == NULL) {
1.153 dtucker 766: result = 0;
767: continue;
768: }
1.269 djm 769: if (match_pattern_list(ci->user, arg, 0) != 1)
1.153 dtucker 770: result = 0;
771: else
772: debug("user %.100s matched 'User %.100s' at "
1.226 dtucker 773: "line %d", ci->user, arg, line);
1.165 dtucker 774: } else if (strcasecmp(attrib, "group") == 0) {
1.226 dtucker 775: if (ci == NULL || ci->user == NULL) {
776: result = 0;
777: continue;
778: }
779: switch (match_cfg_line_group(arg, line, ci->user)) {
1.165 dtucker 780: case -1:
781: return -1;
782: case 0:
783: result = 0;
784: }
1.153 dtucker 785: } else if (strcasecmp(attrib, "host") == 0) {
1.226 dtucker 786: if (ci == NULL || ci->host == NULL) {
1.153 dtucker 787: result = 0;
788: continue;
789: }
1.269 djm 790: if (match_hostname(ci->host, arg) != 1)
1.153 dtucker 791: result = 0;
792: else
793: debug("connection from %.100s matched 'Host "
1.226 dtucker 794: "%.100s' at line %d", ci->host, arg, line);
1.153 dtucker 795: } else if (strcasecmp(attrib, "address") == 0) {
1.226 dtucker 796: if (ci == NULL || ci->address == NULL) {
797: result = 0;
798: continue;
799: }
800: switch (addr_match_list(ci->address, arg)) {
1.181 djm 801: case 1:
802: debug("connection from %.100s matched 'Address "
1.226 dtucker 803: "%.100s' at line %d", ci->address, arg, line);
1.181 djm 804: break;
805: case 0:
1.183 djm 806: case -1:
1.153 dtucker 807: result = 0;
1.181 djm 808: break;
1.183 djm 809: case -2:
1.181 djm 810: return -1;
1.153 dtucker 811: }
1.226 dtucker 812: } else if (strcasecmp(attrib, "localaddress") == 0){
813: if (ci == NULL || ci->laddress == NULL) {
814: result = 0;
815: continue;
816: }
817: switch (addr_match_list(ci->laddress, arg)) {
818: case 1:
819: debug("connection from %.100s matched "
820: "'LocalAddress %.100s' at line %d",
821: ci->laddress, arg, line);
822: break;
823: case 0:
824: case -1:
825: result = 0;
826: break;
827: case -2:
828: return -1;
829: }
830: } else if (strcasecmp(attrib, "localport") == 0) {
831: if ((port = a2port(arg)) == -1) {
832: error("Invalid LocalPort '%s' on Match line",
833: arg);
834: return -1;
835: }
836: if (ci == NULL || ci->lport == 0) {
837: result = 0;
838: continue;
839: }
840: /* TODO support port lists */
841: if (port == ci->lport)
842: debug("connection from %.100s matched "
843: "'LocalPort %d' at line %d",
844: ci->laddress, port, line);
845: else
846: result = 0;
1.153 dtucker 847: } else {
848: error("Unsupported Match attribute %s", attrib);
849: return -1;
850: }
1.243 dtucker 851: }
852: if (attributes == 0) {
853: error("One or more attributes required for Match");
854: return -1;
1.153 dtucker 855: }
1.226 dtucker 856: if (ci != NULL)
1.153 dtucker 857: debug3("match %sfound", result ? "" : "not ");
858: *condition = cp;
859: return result;
860: }
861:
1.158 dtucker 862: #define WHITESPACE " \t\r\n"
863:
1.220 djm 864: /* Multistate option parsing */
865: struct multistate {
866: char *key;
867: int value;
868: };
869: static const struct multistate multistate_addressfamily[] = {
870: { "inet", AF_INET },
871: { "inet6", AF_INET6 },
872: { "any", AF_UNSPEC },
873: { NULL, -1 }
874: };
875: static const struct multistate multistate_permitrootlogin[] = {
876: { "without-password", PERMIT_NO_PASSWD },
1.280 ! deraadt 877: { "prohibit-password", PERMIT_NO_PASSWD },
1.220 djm 878: { "forced-commands-only", PERMIT_FORCED_ONLY },
879: { "yes", PERMIT_YES },
880: { "no", PERMIT_NO },
881: { NULL, -1 }
882: };
883: static const struct multistate multistate_compression[] = {
884: { "delayed", COMP_DELAYED },
885: { "yes", COMP_ZLIB },
886: { "no", COMP_NONE },
887: { NULL, -1 }
888: };
889: static const struct multistate multistate_gatewayports[] = {
890: { "clientspecified", 2 },
891: { "yes", 1 },
892: { "no", 0 },
893: { NULL, -1 }
894: };
1.222 djm 895: static const struct multistate multistate_privsep[] = {
1.228 djm 896: { "yes", PRIVSEP_NOSANDBOX },
897: { "sandbox", PRIVSEP_ON },
898: { "nosandbox", PRIVSEP_NOSANDBOX },
1.222 djm 899: { "no", PRIVSEP_OFF },
900: { NULL, -1 }
901: };
1.233 djm 902: static const struct multistate multistate_tcpfwd[] = {
903: { "yes", FORWARD_ALLOW },
904: { "all", FORWARD_ALLOW },
905: { "no", FORWARD_DENY },
906: { "remote", FORWARD_REMOTE },
907: { "local", FORWARD_LOCAL },
908: { NULL, -1 }
909: };
1.220 djm 910:
1.94 markus 911: int
912: process_server_config_line(ServerOptions *options, char *line,
1.226 dtucker 913: const char *filename, int linenum, int *activep,
914: struct connection_info *connectinfo)
1.1 deraadt 915: {
1.238 dtucker 916: char *cp, **charptr, *arg, *p;
1.237 dtucker 917: int cmdline = 0, *intptr, value, value2, n, port;
1.174 dtucker 918: SyslogFacility *log_facility_ptr;
919: LogLevel *log_level_ptr;
1.25 markus 920: ServerOpCodes opcode;
1.153 dtucker 921: u_int i, flags = 0;
1.151 djm 922: size_t len;
1.237 dtucker 923: long long val64;
1.220 djm 924: const struct multistate *multistate_ptr;
1.25 markus 925:
1.94 markus 926: cp = line;
1.148 dtucker 927: if ((arg = strdelim(&cp)) == NULL)
1.147 djm 928: return 0;
1.94 markus 929: /* Ignore leading whitespace */
930: if (*arg == '\0')
931: arg = strdelim(&cp);
932: if (!arg || !*arg || *arg == '#')
933: return 0;
934: intptr = NULL;
935: charptr = NULL;
1.153 dtucker 936: opcode = parse_token(arg, filename, linenum, &flags);
937:
938: if (activep == NULL) { /* We are processing a command line directive */
939: cmdline = 1;
940: activep = &cmdline;
941: }
942: if (*activep && opcode != sMatch)
943: debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
944: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
1.226 dtucker 945: if (connectinfo == NULL) {
1.153 dtucker 946: fatal("%s line %d: Directive '%s' is not allowed "
947: "within a Match block", filename, linenum, arg);
948: } else { /* this is a directive we have already processed */
949: while (arg)
950: arg = strdelim(&cp);
951: return 0;
952: }
953: }
954:
1.94 markus 955: switch (opcode) {
956: case sBadOption:
957: return -1;
958: case sPort:
959: /* ignore ports from configfile if cmdline specifies ports */
960: if (options->ports_from_cmdline)
961: return 0;
962: if (options->num_ports >= MAX_PORTS)
963: fatal("%s line %d: too many ports.",
964: filename, linenum);
1.48 provos 965: arg = strdelim(&cp);
1.94 markus 966: if (!arg || *arg == '\0')
967: fatal("%s line %d: missing port number.",
968: filename, linenum);
969: options->ports[options->num_ports++] = a2port(arg);
1.194 djm 970: if (options->ports[options->num_ports-1] <= 0)
1.94 markus 971: fatal("%s line %d: Badly formatted port number.",
972: filename, linenum);
973: break;
1.29 markus 974:
1.94 markus 975: case sServerKeyBits:
976: intptr = &options->server_key_bits;
1.180 djm 977: parse_int:
1.94 markus 978: arg = strdelim(&cp);
979: if (!arg || *arg == '\0')
980: fatal("%s line %d: missing integer value.",
981: filename, linenum);
982: value = atoi(arg);
1.153 dtucker 983: if (*activep && *intptr == -1)
1.94 markus 984: *intptr = value;
985: break;
1.25 markus 986:
1.94 markus 987: case sLoginGraceTime:
988: intptr = &options->login_grace_time;
1.180 djm 989: parse_time:
1.94 markus 990: arg = strdelim(&cp);
991: if (!arg || *arg == '\0')
992: fatal("%s line %d: missing time value.",
993: filename, linenum);
994: if ((value = convtime(arg)) == -1)
995: fatal("%s line %d: invalid time value.",
996: filename, linenum);
1.268 djm 997: if (*activep && *intptr == -1)
1.94 markus 998: *intptr = value;
999: break;
1000:
1001: case sKeyRegenerationTime:
1002: intptr = &options->key_regeneration_time;
1003: goto parse_time;
1004:
1005: case sListenAddress:
1006: arg = strdelim(&cp);
1.139 djm 1007: if (arg == NULL || *arg == '\0')
1008: fatal("%s line %d: missing address",
1.94 markus 1009: filename, linenum);
1.144 dtucker 1010: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
1011: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
1012: && strchr(p+1, ':') != NULL) {
1.266 dtucker 1013: queue_listen_addr(options, arg, 0);
1.144 dtucker 1014: break;
1015: }
1.139 djm 1016: p = hpdelim(&arg);
1017: if (p == NULL)
1018: fatal("%s line %d: bad address:port usage",
1019: filename, linenum);
1020: p = cleanhostname(p);
1021: if (arg == NULL)
1022: port = 0;
1.194 djm 1023: else if ((port = a2port(arg)) <= 0)
1.139 djm 1024: fatal("%s line %d: bad port number", filename, linenum);
1025:
1.266 dtucker 1026: queue_listen_addr(options, p, port);
1.25 markus 1027:
1.138 djm 1028: break;
1029:
1030: case sAddressFamily:
1.220 djm 1031: intptr = &options->address_family;
1032: multistate_ptr = multistate_addressfamily;
1033: parse_multistate:
1.138 djm 1034: arg = strdelim(&cp);
1.141 markus 1035: if (!arg || *arg == '\0')
1.220 djm 1036: fatal("%s line %d: missing argument.",
1.141 markus 1037: filename, linenum);
1.220 djm 1038: value = -1;
1039: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1040: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1041: value = multistate_ptr[i].value;
1042: break;
1043: }
1044: }
1045: if (value == -1)
1046: fatal("%s line %d: unsupported option \"%s\".",
1.138 djm 1047: filename, linenum, arg);
1.220 djm 1048: if (*activep && *intptr == -1)
1.138 djm 1049: *intptr = value;
1.94 markus 1050: break;
1051:
1052: case sHostKeyFile:
1053: intptr = &options->num_host_key_files;
1054: if (*intptr >= MAX_HOSTKEYS)
1055: fatal("%s line %d: too many host keys specified (max %d).",
1056: filename, linenum, MAX_HOSTKEYS);
1057: charptr = &options->host_key_files[*intptr];
1.180 djm 1058: parse_filename:
1.94 markus 1059: arg = strdelim(&cp);
1060: if (!arg || *arg == '\0')
1061: fatal("%s line %d: missing file name.",
1062: filename, linenum);
1.153 dtucker 1063: if (*activep && *charptr == NULL) {
1.202 djm 1064: *charptr = derelativise_path(arg);
1.94 markus 1065: /* increase optional counter */
1066: if (intptr != NULL)
1067: *intptr = *intptr + 1;
1068: }
1069: break;
1.76 stevesk 1070:
1.240 markus 1071: case sHostKeyAgent:
1072: charptr = &options->host_key_agent;
1073: arg = strdelim(&cp);
1074: if (!arg || *arg == '\0')
1075: fatal("%s line %d: missing socket name.",
1076: filename, linenum);
1077: if (*activep && *charptr == NULL)
1078: *charptr = !strcmp(arg, SSH_AUTHSOCKET_ENV_NAME) ?
1079: xstrdup(arg) : derelativise_path(arg);
1080: break;
1081:
1.203 djm 1082: case sHostCertificate:
1083: intptr = &options->num_host_cert_files;
1084: if (*intptr >= MAX_HOSTKEYS)
1085: fatal("%s line %d: too many host certificates "
1086: "specified (max %d).", filename, linenum,
1087: MAX_HOSTCERTS);
1088: charptr = &options->host_cert_files[*intptr];
1089: goto parse_filename;
1090: break;
1091:
1.94 markus 1092: case sPidFile:
1093: charptr = &options->pid_file;
1094: goto parse_filename;
1.25 markus 1095:
1.94 markus 1096: case sPermitRootLogin:
1097: intptr = &options->permit_root_login;
1.220 djm 1098: multistate_ptr = multistate_permitrootlogin;
1099: goto parse_multistate;
1.36 markus 1100:
1.94 markus 1101: case sIgnoreRhosts:
1102: intptr = &options->ignore_rhosts;
1.180 djm 1103: parse_flag:
1.94 markus 1104: arg = strdelim(&cp);
1105: if (!arg || *arg == '\0')
1106: fatal("%s line %d: missing yes/no argument.",
1107: filename, linenum);
1108: value = 0; /* silence compiler */
1109: if (strcmp(arg, "yes") == 0)
1110: value = 1;
1111: else if (strcmp(arg, "no") == 0)
1112: value = 0;
1113: else
1114: fatal("%s line %d: Bad yes/no argument: %s",
1115: filename, linenum, arg);
1.153 dtucker 1116: if (*activep && *intptr == -1)
1.94 markus 1117: *intptr = value;
1118: break;
1119:
1120: case sIgnoreUserKnownHosts:
1121: intptr = &options->ignore_user_known_hosts;
1122: goto parse_flag;
1123:
1124: case sRhostsRSAAuthentication:
1125: intptr = &options->rhosts_rsa_authentication;
1126: goto parse_flag;
1127:
1128: case sHostbasedAuthentication:
1129: intptr = &options->hostbased_authentication;
1130: goto parse_flag;
1131:
1132: case sHostbasedUsesNameFromPacketOnly:
1133: intptr = &options->hostbased_uses_name_from_packet_only;
1134: goto parse_flag;
1135:
1.258 djm 1136: case sHostbasedAcceptedKeyTypes:
1137: charptr = &options->hostbased_key_types;
1138: parse_keytypes:
1139: arg = strdelim(&cp);
1140: if (!arg || *arg == '\0')
1141: fatal("%s line %d: Missing argument.",
1142: filename, linenum);
1.277 djm 1143: if (!sshkey_names_valid2(*arg == '+' ? arg + 1 : arg, 1))
1.258 djm 1144: fatal("%s line %d: Bad key types '%s'.",
1145: filename, linenum, arg ? arg : "<NONE>");
1146: if (*activep && *charptr == NULL)
1147: *charptr = xstrdup(arg);
1148: break;
1149:
1.276 markus 1150: case sHostKeyAlgorithms:
1151: charptr = &options->hostkeyalgorithms;
1152: goto parse_keytypes;
1153:
1.94 markus 1154: case sRSAAuthentication:
1155: intptr = &options->rsa_authentication;
1156: goto parse_flag;
1157:
1158: case sPubkeyAuthentication:
1159: intptr = &options->pubkey_authentication;
1160: goto parse_flag;
1.119 jakob 1161:
1.258 djm 1162: case sPubkeyAcceptedKeyTypes:
1163: charptr = &options->pubkey_key_types;
1164: goto parse_keytypes;
1165:
1.94 markus 1166: case sKerberosAuthentication:
1167: intptr = &options->kerberos_authentication;
1168: goto parse_flag;
1169:
1170: case sKerberosOrLocalPasswd:
1171: intptr = &options->kerberos_or_local_passwd;
1172: goto parse_flag;
1173:
1174: case sKerberosTicketCleanup:
1175: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 1176: goto parse_flag;
1177:
1178: case sKerberosGetAFSToken:
1179: intptr = &options->kerberos_get_afs_token;
1.125 markus 1180: goto parse_flag;
1181:
1182: case sGssAuthentication:
1183: intptr = &options->gss_authentication;
1184: goto parse_flag;
1185:
1186: case sGssCleanupCreds:
1187: intptr = &options->gss_cleanup_creds;
1.271 djm 1188: goto parse_flag;
1189:
1190: case sGssStrictAcceptor:
1191: intptr = &options->gss_strict_acceptor;
1.94 markus 1192: goto parse_flag;
1193:
1194: case sPasswordAuthentication:
1195: intptr = &options->password_authentication;
1196: goto parse_flag;
1197:
1198: case sKbdInteractiveAuthentication:
1199: intptr = &options->kbd_interactive_authentication;
1200: goto parse_flag;
1201:
1202: case sChallengeResponseAuthentication:
1203: intptr = &options->challenge_response_authentication;
1204: goto parse_flag;
1205:
1206: case sPrintMotd:
1207: intptr = &options->print_motd;
1208: goto parse_flag;
1209:
1210: case sPrintLastLog:
1211: intptr = &options->print_lastlog;
1212: goto parse_flag;
1213:
1214: case sX11Forwarding:
1215: intptr = &options->x11_forwarding;
1216: goto parse_flag;
1217:
1218: case sX11DisplayOffset:
1219: intptr = &options->x11_display_offset;
1220: goto parse_int;
1.99 stevesk 1221:
1222: case sX11UseLocalhost:
1223: intptr = &options->x11_use_localhost;
1224: goto parse_flag;
1.94 markus 1225:
1226: case sXAuthLocation:
1227: charptr = &options->xauth_location;
1228: goto parse_filename;
1229:
1.244 djm 1230: case sPermitTTY:
1231: intptr = &options->permit_tty;
1232: goto parse_flag;
1233:
1.250 djm 1234: case sPermitUserRC:
1235: intptr = &options->permit_user_rc;
1236: goto parse_flag;
1237:
1.94 markus 1238: case sStrictModes:
1239: intptr = &options->strict_modes;
1240: goto parse_flag;
1241:
1.129 markus 1242: case sTCPKeepAlive:
1243: intptr = &options->tcp_keep_alive;
1.94 markus 1244: goto parse_flag;
1245:
1246: case sEmptyPasswd:
1247: intptr = &options->permit_empty_passwd;
1.113 markus 1248: goto parse_flag;
1249:
1250: case sPermitUserEnvironment:
1251: intptr = &options->permit_user_env;
1.94 markus 1252: goto parse_flag;
1253:
1254: case sUseLogin:
1255: intptr = &options->use_login;
1.111 markus 1256: goto parse_flag;
1257:
1258: case sCompression:
1259: intptr = &options->compression;
1.220 djm 1260: multistate_ptr = multistate_compression;
1261: goto parse_multistate;
1.94 markus 1262:
1.235 dtucker 1263: case sRekeyLimit:
1264: arg = strdelim(&cp);
1265: if (!arg || *arg == '\0')
1266: fatal("%.200s line %d: Missing argument.", filename,
1267: linenum);
1268: if (strcmp(arg, "default") == 0) {
1269: val64 = 0;
1270: } else {
1.236 dtucker 1271: if (scan_scaled(arg, &val64) == -1)
1272: fatal("%.200s line %d: Bad number '%s': %s",
1273: filename, linenum, arg, strerror(errno));
1274: /* check for too-large or too-small limits */
1275: if (val64 > UINT_MAX)
1.235 dtucker 1276: fatal("%.200s line %d: RekeyLimit too large",
1277: filename, linenum);
1278: if (val64 != 0 && val64 < 16)
1279: fatal("%.200s line %d: RekeyLimit too small",
1280: filename, linenum);
1281: }
1282: if (*activep && options->rekey_limit == -1)
1283: options->rekey_limit = (u_int32_t)val64;
1284: if (cp != NULL) { /* optional rekey interval present */
1285: if (strcmp(cp, "none") == 0) {
1286: (void)strdelim(&cp); /* discard */
1287: break;
1288: }
1289: intptr = &options->rekey_interval;
1290: goto parse_time;
1291: }
1292: break;
1293:
1.94 markus 1294: case sGatewayPorts:
1.251 millert 1295: intptr = &options->fwd_opts.gateway_ports;
1.220 djm 1296: multistate_ptr = multistate_gatewayports;
1297: goto parse_multistate;
1.25 markus 1298:
1.122 markus 1299: case sUseDNS:
1300: intptr = &options->use_dns;
1.94 markus 1301: goto parse_flag;
1.53 markus 1302:
1.94 markus 1303: case sLogFacility:
1.174 dtucker 1304: log_facility_ptr = &options->log_facility;
1.94 markus 1305: arg = strdelim(&cp);
1306: value = log_facility_number(arg);
1.101 markus 1307: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 1308: fatal("%.200s line %d: unsupported log facility '%s'",
1309: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1310: if (*log_facility_ptr == -1)
1311: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 1312: break;
1.25 markus 1313:
1.94 markus 1314: case sLogLevel:
1.174 dtucker 1315: log_level_ptr = &options->log_level;
1.94 markus 1316: arg = strdelim(&cp);
1317: value = log_level_number(arg);
1.101 markus 1318: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 1319: fatal("%.200s line %d: unsupported log level '%s'",
1320: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1321: if (*log_level_ptr == -1)
1322: *log_level_ptr = (LogLevel) value;
1.94 markus 1323: break;
1324:
1325: case sAllowTcpForwarding:
1326: intptr = &options->allow_tcp_forwarding;
1.233 djm 1327: multistate_ptr = multistate_tcpfwd;
1328: goto parse_multistate;
1.102 provos 1329:
1.251 millert 1330: case sAllowStreamLocalForwarding:
1331: intptr = &options->allow_streamlocal_forwarding;
1332: multistate_ptr = multistate_tcpfwd;
1333: goto parse_multistate;
1334:
1.178 pyr 1335: case sAllowAgentForwarding:
1336: intptr = &options->allow_agent_forwarding;
1337: goto parse_flag;
1338:
1.102 provos 1339: case sUsePrivilegeSeparation:
1340: intptr = &use_privsep;
1.222 djm 1341: multistate_ptr = multistate_privsep;
1342: goto parse_multistate;
1.94 markus 1343:
1344: case sAllowUsers:
1345: while ((arg = strdelim(&cp)) && *arg != '\0') {
1346: if (options->num_allow_users >= MAX_ALLOW_USERS)
1347: fatal("%s line %d: too many allow users.",
1348: filename, linenum);
1.227 markus 1349: if (!*activep)
1350: continue;
1.112 deraadt 1351: options->allow_users[options->num_allow_users++] =
1352: xstrdup(arg);
1.94 markus 1353: }
1354: break;
1.25 markus 1355:
1.94 markus 1356: case sDenyUsers:
1357: while ((arg = strdelim(&cp)) && *arg != '\0') {
1358: if (options->num_deny_users >= MAX_DENY_USERS)
1.163 stevesk 1359: fatal("%s line %d: too many deny users.",
1.94 markus 1360: filename, linenum);
1.227 markus 1361: if (!*activep)
1362: continue;
1.112 deraadt 1363: options->deny_users[options->num_deny_users++] =
1364: xstrdup(arg);
1.94 markus 1365: }
1366: break;
1.25 markus 1367:
1.94 markus 1368: case sAllowGroups:
1369: while ((arg = strdelim(&cp)) && *arg != '\0') {
1370: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1371: fatal("%s line %d: too many allow groups.",
1372: filename, linenum);
1.227 markus 1373: if (!*activep)
1374: continue;
1.112 deraadt 1375: options->allow_groups[options->num_allow_groups++] =
1376: xstrdup(arg);
1.94 markus 1377: }
1378: break;
1.33 markus 1379:
1.94 markus 1380: case sDenyGroups:
1381: while ((arg = strdelim(&cp)) && *arg != '\0') {
1382: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1383: fatal("%s line %d: too many deny groups.",
1384: filename, linenum);
1.227 markus 1385: if (!*activep)
1386: continue;
1387: options->deny_groups[options->num_deny_groups++] =
1388: xstrdup(arg);
1.94 markus 1389: }
1390: break;
1.66 markus 1391:
1.94 markus 1392: case sCiphers:
1393: arg = strdelim(&cp);
1394: if (!arg || *arg == '\0')
1395: fatal("%s line %d: Missing argument.", filename, linenum);
1.277 djm 1396: if (!ciphers_valid(*arg == '+' ? arg + 1 : arg))
1.94 markus 1397: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1398: filename, linenum, arg ? arg : "<NONE>");
1399: if (options->ciphers == NULL)
1400: options->ciphers = xstrdup(arg);
1401: break;
1.33 markus 1402:
1.94 markus 1403: case sMacs:
1404: arg = strdelim(&cp);
1405: if (!arg || *arg == '\0')
1406: fatal("%s line %d: Missing argument.", filename, linenum);
1.277 djm 1407: if (!mac_valid(*arg == '+' ? arg + 1 : arg))
1.94 markus 1408: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1409: filename, linenum, arg ? arg : "<NONE>");
1410: if (options->macs == NULL)
1411: options->macs = xstrdup(arg);
1.211 djm 1412: break;
1413:
1414: case sKexAlgorithms:
1415: arg = strdelim(&cp);
1416: if (!arg || *arg == '\0')
1417: fatal("%s line %d: Missing argument.",
1418: filename, linenum);
1.277 djm 1419: if (!kex_names_valid(*arg == '+' ? arg + 1 : arg))
1.211 djm 1420: fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
1421: filename, linenum, arg ? arg : "<NONE>");
1422: if (options->kex_algorithms == NULL)
1423: options->kex_algorithms = xstrdup(arg);
1.94 markus 1424: break;
1.43 jakob 1425:
1.94 markus 1426: case sProtocol:
1427: intptr = &options->protocol;
1428: arg = strdelim(&cp);
1429: if (!arg || *arg == '\0')
1430: fatal("%s line %d: Missing argument.", filename, linenum);
1431: value = proto_spec(arg);
1432: if (value == SSH_PROTO_UNKNOWN)
1433: fatal("%s line %d: Bad protocol spec '%s'.",
1.95 deraadt 1434: filename, linenum, arg ? arg : "<NONE>");
1.94 markus 1435: if (*intptr == SSH_PROTO_UNKNOWN)
1436: *intptr = value;
1437: break;
1438:
1439: case sSubsystem:
1440: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1441: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1442: filename, linenum);
1.94 markus 1443: }
1444: arg = strdelim(&cp);
1445: if (!arg || *arg == '\0')
1446: fatal("%s line %d: Missing subsystem name.",
1.95 deraadt 1447: filename, linenum);
1.153 dtucker 1448: if (!*activep) {
1449: arg = strdelim(&cp);
1450: break;
1451: }
1.94 markus 1452: for (i = 0; i < options->num_subsystems; i++)
1453: if (strcmp(arg, options->subsystem_name[i]) == 0)
1454: fatal("%s line %d: Subsystem '%s' already defined.",
1.95 deraadt 1455: filename, linenum, arg);
1.94 markus 1456: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1457: arg = strdelim(&cp);
1458: if (!arg || *arg == '\0')
1459: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1460: filename, linenum);
1.94 markus 1461: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1462:
1463: /* Collect arguments (separate to executable) */
1464: p = xstrdup(arg);
1465: len = strlen(p) + 1;
1466: while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1467: len += 1 + strlen(arg);
1.264 deraadt 1468: p = xreallocarray(p, 1, len);
1.151 djm 1469: strlcat(p, " ", len);
1470: strlcat(p, arg, len);
1471: }
1472: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1473: options->num_subsystems++;
1474: break;
1.46 markus 1475:
1.94 markus 1476: case sMaxStartups:
1477: arg = strdelim(&cp);
1478: if (!arg || *arg == '\0')
1479: fatal("%s line %d: Missing MaxStartups spec.",
1.95 deraadt 1480: filename, linenum);
1.94 markus 1481: if ((n = sscanf(arg, "%d:%d:%d",
1482: &options->max_startups_begin,
1483: &options->max_startups_rate,
1484: &options->max_startups)) == 3) {
1485: if (options->max_startups_begin >
1486: options->max_startups ||
1487: options->max_startups_rate > 100 ||
1488: options->max_startups_rate < 1)
1.50 markus 1489: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 1490: filename, linenum);
1.94 markus 1491: } else if (n != 1)
1492: fatal("%s line %d: Illegal MaxStartups spec.",
1493: filename, linenum);
1494: else
1495: options->max_startups = options->max_startups_begin;
1496: break;
1.133 dtucker 1497:
1498: case sMaxAuthTries:
1499: intptr = &options->max_authtries;
1500: goto parse_int;
1.94 markus 1501:
1.180 djm 1502: case sMaxSessions:
1503: intptr = &options->max_sessions;
1504: goto parse_int;
1505:
1.94 markus 1506: case sBanner:
1507: charptr = &options->banner;
1508: goto parse_filename;
1.176 djm 1509:
1.94 markus 1510: /*
1511: * These options can contain %X options expanded at
1512: * connect time, so that you can specify paths like:
1513: *
1514: * AuthorizedKeysFile /etc/ssh_keys/%u
1515: */
1516: case sAuthorizedKeysFile:
1.219 djm 1517: if (*activep && options->num_authkeys_files == 0) {
1518: while ((arg = strdelim(&cp)) && *arg != '\0') {
1519: if (options->num_authkeys_files >=
1520: MAX_AUTHKEYS_FILES)
1521: fatal("%s line %d: "
1522: "too many authorized keys files.",
1523: filename, linenum);
1524: options->authorized_keys_files[
1525: options->num_authkeys_files++] =
1526: tilde_expand_filename(arg, getuid());
1527: }
1528: }
1529: return 0;
1530:
1.208 djm 1531: case sAuthorizedPrincipalsFile:
1532: charptr = &options->authorized_principals_file;
1.205 djm 1533: arg = strdelim(&cp);
1534: if (!arg || *arg == '\0')
1535: fatal("%s line %d: missing file name.",
1536: filename, linenum);
1537: if (*activep && *charptr == NULL) {
1.206 markus 1538: *charptr = tilde_expand_filename(arg, getuid());
1.205 djm 1539: /* increase optional counter */
1540: if (intptr != NULL)
1541: *intptr = *intptr + 1;
1542: }
1543: break;
1.94 markus 1544:
1545: case sClientAliveInterval:
1546: intptr = &options->client_alive_interval;
1547: goto parse_time;
1548:
1549: case sClientAliveCountMax:
1550: intptr = &options->client_alive_count_max;
1551: goto parse_int;
1.131 djm 1552:
1553: case sAcceptEnv:
1554: while ((arg = strdelim(&cp)) && *arg != '\0') {
1555: if (strchr(arg, '=') != NULL)
1556: fatal("%s line %d: Invalid environment name.",
1557: filename, linenum);
1558: if (options->num_accept_env >= MAX_ACCEPT_ENV)
1559: fatal("%s line %d: too many allow env.",
1560: filename, linenum);
1.153 dtucker 1561: if (!*activep)
1.227 markus 1562: continue;
1.131 djm 1563: options->accept_env[options->num_accept_env++] =
1564: xstrdup(arg);
1565: }
1566: break;
1.145 reyk 1567:
1568: case sPermitTunnel:
1569: intptr = &options->permit_tun;
1.146 reyk 1570: arg = strdelim(&cp);
1571: if (!arg || *arg == '\0')
1572: fatal("%s line %d: Missing yes/point-to-point/"
1573: "ethernet/no argument.", filename, linenum);
1.182 dtucker 1574: value = -1;
1575: for (i = 0; tunmode_desc[i].val != -1; i++)
1576: if (strcmp(tunmode_desc[i].text, arg) == 0) {
1577: value = tunmode_desc[i].val;
1578: break;
1579: }
1580: if (value == -1)
1.146 reyk 1581: fatal("%s line %d: Bad yes/point-to-point/ethernet/"
1582: "no argument: %s", filename, linenum, arg);
1.268 djm 1583: if (*activep && *intptr == -1)
1.146 reyk 1584: *intptr = value;
1585: break;
1.94 markus 1586:
1.153 dtucker 1587: case sMatch:
1588: if (cmdline)
1589: fatal("Match directive not supported as a command-line "
1590: "option");
1.226 dtucker 1591: value = match_cfg_line(&cp, linenum, connectinfo);
1.153 dtucker 1592: if (value < 0)
1593: fatal("%s line %d: Bad Match condition", filename,
1594: linenum);
1595: *activep = value;
1.156 dtucker 1596: break;
1597:
1598: case sPermitOpen:
1599: arg = strdelim(&cp);
1600: if (!arg || *arg == '\0')
1601: fatal("%s line %d: missing PermitOpen specification",
1602: filename, linenum);
1.167 dtucker 1603: n = options->num_permitted_opens; /* modified later */
1.156 dtucker 1604: if (strcmp(arg, "any") == 0) {
1.167 dtucker 1605: if (*activep && n == -1) {
1.156 dtucker 1606: channel_clear_adm_permitted_opens();
1.159 dtucker 1607: options->num_permitted_opens = 0;
1.224 dtucker 1608: }
1609: break;
1610: }
1611: if (strcmp(arg, "none") == 0) {
1612: if (*activep && n == -1) {
1613: options->num_permitted_opens = 1;
1614: channel_disable_adm_local_opens();
1.159 dtucker 1615: }
1.156 dtucker 1616: break;
1617: }
1.166 dtucker 1618: if (*activep && n == -1)
1619: channel_clear_adm_permitted_opens();
1.159 dtucker 1620: for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
1621: p = hpdelim(&arg);
1622: if (p == NULL)
1623: fatal("%s line %d: missing host in PermitOpen",
1624: filename, linenum);
1625: p = cleanhostname(p);
1.223 dtucker 1626: if (arg == NULL || ((port = permitopen_port(arg)) < 0))
1.159 dtucker 1627: fatal("%s line %d: bad port number in "
1628: "PermitOpen", filename, linenum);
1.166 dtucker 1629: if (*activep && n == -1)
1.159 dtucker 1630: options->num_permitted_opens =
1631: channel_add_adm_permitted_opens(p, port);
1632: }
1.153 dtucker 1633: break;
1634:
1.158 dtucker 1635: case sForceCommand:
1.262 dtucker 1636: if (cp == NULL || *cp == '\0')
1.158 dtucker 1637: fatal("%.200s line %d: Missing argument.", filename,
1638: linenum);
1639: len = strspn(cp, WHITESPACE);
1640: if (*activep && options->adm_forced_command == NULL)
1641: options->adm_forced_command = xstrdup(cp + len);
1642: return 0;
1643:
1.176 djm 1644: case sChrootDirectory:
1645: charptr = &options->chroot_directory;
1.177 djm 1646:
1647: arg = strdelim(&cp);
1648: if (!arg || *arg == '\0')
1649: fatal("%s line %d: missing file name.",
1650: filename, linenum);
1651: if (*activep && *charptr == NULL)
1652: *charptr = xstrdup(arg);
1653: break;
1.176 djm 1654:
1.204 djm 1655: case sTrustedUserCAKeys:
1656: charptr = &options->trusted_user_ca_keys;
1657: goto parse_filename;
1658:
1659: case sRevokedKeys:
1660: charptr = &options->revoked_keys_file;
1661: goto parse_filename;
1662:
1.213 djm 1663: case sIPQoS:
1664: arg = strdelim(&cp);
1665: if ((value = parse_ipqos(arg)) == -1)
1666: fatal("%s line %d: Bad IPQoS value: %s",
1667: filename, linenum, arg);
1668: arg = strdelim(&cp);
1669: if (arg == NULL)
1670: value2 = value;
1671: else if ((value2 = parse_ipqos(arg)) == -1)
1672: fatal("%s line %d: Bad IPQoS value: %s",
1673: filename, linenum, arg);
1674: if (*activep) {
1675: options->ip_qos_interactive = value;
1676: options->ip_qos_bulk = value2;
1677: }
1678: break;
1679:
1.225 djm 1680: case sVersionAddendum:
1.262 dtucker 1681: if (cp == NULL || *cp == '\0')
1.225 djm 1682: fatal("%.200s line %d: Missing argument.", filename,
1683: linenum);
1684: len = strspn(cp, WHITESPACE);
1685: if (*activep && options->version_addendum == NULL) {
1686: if (strcasecmp(cp + len, "none") == 0)
1687: options->version_addendum = xstrdup("");
1688: else if (strchr(cp + len, '\r') != NULL)
1689: fatal("%.200s line %d: Invalid argument",
1690: filename, linenum);
1691: else
1692: options->version_addendum = xstrdup(cp + len);
1693: }
1694: return 0;
1695:
1.231 djm 1696: case sAuthorizedKeysCommand:
1.255 jsg 1697: if (cp == NULL)
1698: fatal("%.200s line %d: Missing argument.", filename,
1699: linenum);
1.231 djm 1700: len = strspn(cp, WHITESPACE);
1701: if (*activep && options->authorized_keys_command == NULL) {
1702: if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
1703: fatal("%.200s line %d: AuthorizedKeysCommand "
1704: "must be an absolute path",
1705: filename, linenum);
1706: options->authorized_keys_command = xstrdup(cp + len);
1707: }
1708: return 0;
1709:
1710: case sAuthorizedKeysCommandUser:
1711: charptr = &options->authorized_keys_command_user;
1712:
1713: arg = strdelim(&cp);
1.255 jsg 1714: if (!arg || *arg == '\0')
1715: fatal("%s line %d: missing AuthorizedKeysCommandUser "
1716: "argument.", filename, linenum);
1.231 djm 1717: if (*activep && *charptr == NULL)
1718: *charptr = xstrdup(arg);
1719: break;
1720:
1.270 djm 1721: case sAuthorizedPrincipalsCommand:
1722: if (cp == NULL)
1723: fatal("%.200s line %d: Missing argument.", filename,
1724: linenum);
1725: len = strspn(cp, WHITESPACE);
1726: if (*activep &&
1727: options->authorized_principals_command == NULL) {
1728: if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
1729: fatal("%.200s line %d: "
1730: "AuthorizedPrincipalsCommand must be "
1731: "an absolute path", filename, linenum);
1732: options->authorized_principals_command =
1733: xstrdup(cp + len);
1734: }
1735: return 0;
1736:
1737: case sAuthorizedPrincipalsCommandUser:
1738: charptr = &options->authorized_principals_command_user;
1739:
1740: arg = strdelim(&cp);
1741: if (!arg || *arg == '\0')
1742: fatal("%s line %d: missing "
1743: "AuthorizedPrincipalsCommandUser argument.",
1744: filename, linenum);
1745: if (*activep && *charptr == NULL)
1746: *charptr = xstrdup(arg);
1747: break;
1748:
1.232 djm 1749: case sAuthenticationMethods:
1.268 djm 1750: if (options->num_auth_methods == 0) {
1.232 djm 1751: while ((arg = strdelim(&cp)) && *arg != '\0') {
1752: if (options->num_auth_methods >=
1753: MAX_AUTH_METHODS)
1754: fatal("%s line %d: "
1755: "too many authentication methods.",
1756: filename, linenum);
1757: if (auth2_methods_valid(arg, 0) != 0)
1758: fatal("%s line %d: invalid "
1759: "authentication method list.",
1760: filename, linenum);
1.268 djm 1761: if (!*activep)
1762: continue;
1.232 djm 1763: options->auth_methods[
1764: options->num_auth_methods++] = xstrdup(arg);
1765: }
1766: }
1767: return 0;
1768:
1.251 millert 1769: case sStreamLocalBindMask:
1770: arg = strdelim(&cp);
1771: if (!arg || *arg == '\0')
1.268 djm 1772: fatal("%s line %d: missing StreamLocalBindMask "
1773: "argument.", filename, linenum);
1.251 millert 1774: /* Parse mode in octal format */
1775: value = strtol(arg, &p, 8);
1776: if (arg == p || value < 0 || value > 0777)
1777: fatal("%s line %d: Bad mask.", filename, linenum);
1.268 djm 1778: if (*activep)
1779: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1.251 millert 1780: break;
1781:
1782: case sStreamLocalBindUnlink:
1783: intptr = &options->fwd_opts.streamlocal_bind_unlink;
1784: goto parse_flag;
1785:
1.256 djm 1786: case sFingerprintHash:
1787: arg = strdelim(&cp);
1788: if (!arg || *arg == '\0')
1789: fatal("%.200s line %d: Missing argument.",
1790: filename, linenum);
1791: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1792: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
1793: filename, linenum, arg);
1794: if (*activep)
1795: options->fingerprint_hash = value;
1796: break;
1797:
1.94 markus 1798: case sDeprecated:
1.117 itojun 1799: logit("%s line %d: Deprecated option %s",
1.121 jakob 1800: filename, linenum, arg);
1801: while (arg)
1802: arg = strdelim(&cp);
1803: break;
1804:
1805: case sUnsupported:
1806: logit("%s line %d: Unsupported option %s",
1.94 markus 1807: filename, linenum, arg);
1808: while (arg)
1809: arg = strdelim(&cp);
1810: break;
1811:
1812: default:
1813: fatal("%s line %d: Missing handler for opcode %s (%d)",
1814: filename, linenum, arg, opcode);
1815: }
1816: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
1817: fatal("%s line %d: garbage at end of line; \"%.200s\".",
1818: filename, linenum, arg);
1819: return 0;
1820: }
1821:
1822: /* Reads the server configuration file. */
1.25 markus 1823:
1.94 markus 1824: void
1.134 djm 1825: load_server_config(const char *filename, Buffer *conf)
1.94 markus 1826: {
1.229 dtucker 1827: char line[4096], *cp;
1.94 markus 1828: FILE *f;
1.229 dtucker 1829: int lineno = 0;
1.81 stevesk 1830:
1.134 djm 1831: debug2("%s: filename %s", __func__, filename);
1832: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 1833: perror(filename);
1834: exit(1);
1835: }
1.134 djm 1836: buffer_clear(conf);
1837: while (fgets(line, sizeof(line), f)) {
1.229 dtucker 1838: lineno++;
1839: if (strlen(line) == sizeof(line) - 1)
1840: fatal("%s line %d too long", filename, lineno);
1.134 djm 1841: /*
1842: * Trim out comments and strip whitespace
1.135 deraadt 1843: * NB - preserve newlines, they are needed to reproduce
1.134 djm 1844: * line numbers later for error messages
1845: */
1846: if ((cp = strchr(line, '#')) != NULL)
1847: memcpy(cp, "\n", 2);
1848: cp = line + strspn(line, " \t\r");
1849:
1850: buffer_append(conf, cp, strlen(cp));
1851: }
1852: buffer_append(conf, "\0", 1);
1853: fclose(f);
1854: debug2("%s: done config len = %d", __func__, buffer_len(conf));
1855: }
1856:
1857: void
1.226 dtucker 1858: parse_server_match_config(ServerOptions *options,
1859: struct connection_info *connectinfo)
1.153 dtucker 1860: {
1861: ServerOptions mo;
1862:
1863: initialize_server_options(&mo);
1.226 dtucker 1864: parse_server_config(&mo, "reprocess config", &cfg, connectinfo);
1.168 dtucker 1865: copy_set_server_options(options, &mo, 0);
1.153 dtucker 1866: }
1867:
1.226 dtucker 1868: int parse_server_match_testspec(struct connection_info *ci, char *spec)
1869: {
1870: char *p;
1871:
1872: while ((p = strsep(&spec, ",")) && *p != '\0') {
1873: if (strncmp(p, "addr=", 5) == 0) {
1874: ci->address = xstrdup(p + 5);
1875: } else if (strncmp(p, "host=", 5) == 0) {
1876: ci->host = xstrdup(p + 5);
1877: } else if (strncmp(p, "user=", 5) == 0) {
1878: ci->user = xstrdup(p + 5);
1879: } else if (strncmp(p, "laddr=", 6) == 0) {
1880: ci->laddress = xstrdup(p + 6);
1881: } else if (strncmp(p, "lport=", 6) == 0) {
1882: ci->lport = a2port(p + 6);
1883: if (ci->lport == -1) {
1884: fprintf(stderr, "Invalid port '%s' in test mode"
1885: " specification %s\n", p+6, p);
1886: return -1;
1887: }
1888: } else {
1889: fprintf(stderr, "Invalid test mode specification %s\n",
1890: p);
1891: return -1;
1892: }
1893: }
1894: return 0;
1895: }
1896:
1897: /*
1898: * returns 1 for a complete spec, 0 for partial spec and -1 for an
1899: * empty spec.
1900: */
1901: int server_match_spec_complete(struct connection_info *ci)
1902: {
1903: if (ci->user && ci->host && ci->address)
1904: return 1; /* complete */
1905: if (!ci->user && !ci->host && !ci->address)
1906: return -1; /* empty */
1907: return 0; /* partial */
1908: }
1909:
1.168 dtucker 1910: /*
1911: * Copy any supported values that are set.
1912: *
1.195 jj 1913: * If the preauth flag is set, we do not bother copying the string or
1.168 dtucker 1914: * array values that are not used pre-authentication, because any that we
1915: * do use must be explictly sent in mm_getpwnamallow().
1916: */
1.153 dtucker 1917: void
1.168 dtucker 1918: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 1919: {
1.247 djm 1920: #define M_CP_INTOPT(n) do {\
1921: if (src->n != -1) \
1922: dst->n = src->n; \
1923: } while (0)
1924:
1.168 dtucker 1925: M_CP_INTOPT(password_authentication);
1926: M_CP_INTOPT(gss_authentication);
1927: M_CP_INTOPT(rsa_authentication);
1928: M_CP_INTOPT(pubkey_authentication);
1929: M_CP_INTOPT(kerberos_authentication);
1930: M_CP_INTOPT(hostbased_authentication);
1.209 djm 1931: M_CP_INTOPT(hostbased_uses_name_from_packet_only);
1.168 dtucker 1932: M_CP_INTOPT(kbd_interactive_authentication);
1.175 dtucker 1933: M_CP_INTOPT(permit_root_login);
1.188 djm 1934: M_CP_INTOPT(permit_empty_passwd);
1.168 dtucker 1935:
1936: M_CP_INTOPT(allow_tcp_forwarding);
1.251 millert 1937: M_CP_INTOPT(allow_streamlocal_forwarding);
1.178 pyr 1938: M_CP_INTOPT(allow_agent_forwarding);
1.209 djm 1939: M_CP_INTOPT(permit_tun);
1.251 millert 1940: M_CP_INTOPT(fwd_opts.gateway_ports);
1.168 dtucker 1941: M_CP_INTOPT(x11_display_offset);
1942: M_CP_INTOPT(x11_forwarding);
1943: M_CP_INTOPT(x11_use_localhost);
1.244 djm 1944: M_CP_INTOPT(permit_tty);
1.250 djm 1945: M_CP_INTOPT(permit_user_rc);
1.180 djm 1946: M_CP_INTOPT(max_sessions);
1.184 dtucker 1947: M_CP_INTOPT(max_authtries);
1.213 djm 1948: M_CP_INTOPT(ip_qos_interactive);
1949: M_CP_INTOPT(ip_qos_bulk);
1.235 dtucker 1950: M_CP_INTOPT(rekey_limit);
1951: M_CP_INTOPT(rekey_interval);
1.247 djm 1952:
1953: /* M_CP_STROPT and M_CP_STRARRAYOPT should not appear before here */
1954: #define M_CP_STROPT(n) do {\
1955: if (src->n != NULL && dst->n != src->n) { \
1956: free(dst->n); \
1957: dst->n = src->n; \
1958: } \
1959: } while(0)
1960: #define M_CP_STRARRAYOPT(n, num_n) do {\
1961: if (src->num_n != 0) { \
1962: for (dst->num_n = 0; dst->num_n < src->num_n; dst->num_n++) \
1963: dst->n[dst->num_n] = xstrdup(src->n[dst->num_n]); \
1964: } \
1965: } while(0)
1.168 dtucker 1966:
1.218 djm 1967: /* See comment in servconf.h */
1968: COPY_MATCH_STRING_OPTS();
1.216 djm 1969:
1.217 dtucker 1970: /*
1971: * The only things that should be below this point are string options
1972: * which are only used after authentication.
1973: */
1.168 dtucker 1974: if (preauth)
1975: return;
1.219 djm 1976:
1.168 dtucker 1977: M_CP_STROPT(adm_forced_command);
1.176 djm 1978: M_CP_STROPT(chroot_directory);
1.153 dtucker 1979: }
1.168 dtucker 1980:
1981: #undef M_CP_INTOPT
1982: #undef M_CP_STROPT
1.219 djm 1983: #undef M_CP_STRARRAYOPT
1.153 dtucker 1984:
1985: void
1986: parse_server_config(ServerOptions *options, const char *filename, Buffer *conf,
1.226 dtucker 1987: struct connection_info *connectinfo)
1.134 djm 1988: {
1.153 dtucker 1989: int active, linenum, bad_options = 0;
1.136 dtucker 1990: char *cp, *obuf, *cbuf;
1.134 djm 1991:
1992: debug2("%s: config %s len %d", __func__, filename, buffer_len(conf));
1993:
1.136 dtucker 1994: obuf = cbuf = xstrdup(buffer_ptr(conf));
1.226 dtucker 1995: active = connectinfo ? 0 : 1;
1.137 dtucker 1996: linenum = 1;
1.140 deraadt 1997: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.134 djm 1998: if (process_server_config_line(options, cp, filename,
1.226 dtucker 1999: linenum++, &active, connectinfo) != 0)
1.94 markus 2000: bad_options++;
1.1 deraadt 2001: }
1.239 djm 2002: free(obuf);
1.78 stevesk 2003: if (bad_options > 0)
2004: fatal("%s: terminating, %d bad configuration options",
2005: filename, bad_options);
1.266 dtucker 2006: process_queued_listen_addrs(options);
1.182 dtucker 2007: }
2008:
2009: static const char *
1.221 djm 2010: fmt_multistate_int(int val, const struct multistate *m)
2011: {
2012: u_int i;
2013:
2014: for (i = 0; m[i].key != NULL; i++) {
2015: if (m[i].value == val)
2016: return m[i].key;
2017: }
2018: return "UNKNOWN";
2019: }
2020:
2021: static const char *
1.182 dtucker 2022: fmt_intarg(ServerOpCodes code, int val)
2023: {
1.221 djm 2024: if (val == -1)
2025: return "unset";
2026: switch (code) {
2027: case sAddressFamily:
2028: return fmt_multistate_int(val, multistate_addressfamily);
2029: case sPermitRootLogin:
2030: return fmt_multistate_int(val, multistate_permitrootlogin);
2031: case sGatewayPorts:
2032: return fmt_multistate_int(val, multistate_gatewayports);
2033: case sCompression:
2034: return fmt_multistate_int(val, multistate_compression);
1.222 djm 2035: case sUsePrivilegeSeparation:
2036: return fmt_multistate_int(val, multistate_privsep);
1.233 djm 2037: case sAllowTcpForwarding:
2038: return fmt_multistate_int(val, multistate_tcpfwd);
1.251 millert 2039: case sAllowStreamLocalForwarding:
2040: return fmt_multistate_int(val, multistate_tcpfwd);
1.256 djm 2041: case sFingerprintHash:
2042: return ssh_digest_alg_name(val);
1.221 djm 2043: case sProtocol:
1.182 dtucker 2044: switch (val) {
2045: case SSH_PROTO_1:
2046: return "1";
2047: case SSH_PROTO_2:
2048: return "2";
2049: case (SSH_PROTO_1|SSH_PROTO_2):
2050: return "2,1";
2051: default:
2052: return "UNKNOWN";
2053: }
1.221 djm 2054: default:
2055: switch (val) {
2056: case 0:
2057: return "no";
2058: case 1:
2059: return "yes";
2060: default:
2061: return "UNKNOWN";
2062: }
1.182 dtucker 2063: }
2064: }
2065:
2066: static const char *
2067: lookup_opcode_name(ServerOpCodes code)
2068: {
2069: u_int i;
2070:
2071: for (i = 0; keywords[i].name != NULL; i++)
2072: if (keywords[i].opcode == code)
2073: return(keywords[i].name);
2074: return "UNKNOWN";
2075: }
2076:
2077: static void
2078: dump_cfg_int(ServerOpCodes code, int val)
2079: {
2080: printf("%s %d\n", lookup_opcode_name(code), val);
2081: }
2082:
2083: static void
1.263 dtucker 2084: dump_cfg_oct(ServerOpCodes code, int val)
2085: {
2086: printf("%s 0%o\n", lookup_opcode_name(code), val);
2087: }
2088:
2089: static void
1.182 dtucker 2090: dump_cfg_fmtint(ServerOpCodes code, int val)
2091: {
2092: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2093: }
2094:
2095: static void
2096: dump_cfg_string(ServerOpCodes code, const char *val)
2097: {
2098: if (val == NULL)
2099: return;
1.257 djm 2100: printf("%s %s\n", lookup_opcode_name(code),
2101: val == NULL ? "none" : val);
1.182 dtucker 2102: }
2103:
2104: static void
2105: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
2106: {
2107: u_int i;
2108:
2109: for (i = 0; i < count; i++)
1.219 djm 2110: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2111: }
2112:
2113: static void
2114: dump_cfg_strarray_oneline(ServerOpCodes code, u_int count, char **vals)
2115: {
2116: u_int i;
2117:
1.261 dtucker 2118: if (count <= 0)
2119: return;
1.219 djm 2120: printf("%s", lookup_opcode_name(code));
2121: for (i = 0; i < count; i++)
2122: printf(" %s", vals[i]);
2123: printf("\n");
1.182 dtucker 2124: }
2125:
2126: void
2127: dump_config(ServerOptions *o)
2128: {
2129: u_int i;
2130: int ret;
2131: struct addrinfo *ai;
2132: char addr[NI_MAXHOST], port[NI_MAXSERV], *s = NULL;
1.263 dtucker 2133: char *laddr1 = xstrdup(""), *laddr2 = NULL;
1.182 dtucker 2134:
2135: /* these are usually at the top of the config */
2136: for (i = 0; i < o->num_ports; i++)
2137: printf("port %d\n", o->ports[i]);
2138: dump_cfg_fmtint(sProtocol, o->protocol);
2139: dump_cfg_fmtint(sAddressFamily, o->address_family);
2140:
1.263 dtucker 2141: /*
2142: * ListenAddress must be after Port. add_one_listen_addr pushes
2143: * addresses onto a stack, so to maintain ordering we need to
2144: * print these in reverse order.
2145: */
1.182 dtucker 2146: for (ai = o->listen_addrs; ai; ai = ai->ai_next) {
2147: if ((ret = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
2148: sizeof(addr), port, sizeof(port),
2149: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
2150: error("getnameinfo failed: %.100s",
2151: (ret != EAI_SYSTEM) ? gai_strerror(ret) :
2152: strerror(errno));
2153: } else {
1.263 dtucker 2154: laddr2 = laddr1;
1.182 dtucker 2155: if (ai->ai_family == AF_INET6)
1.263 dtucker 2156: xasprintf(&laddr1, "listenaddress [%s]:%s\n%s",
2157: addr, port, laddr2);
1.182 dtucker 2158: else
1.263 dtucker 2159: xasprintf(&laddr1, "listenaddress %s:%s\n%s",
2160: addr, port, laddr2);
2161: free(laddr2);
1.182 dtucker 2162: }
2163: }
1.263 dtucker 2164: printf("%s", laddr1);
2165: free(laddr1);
1.182 dtucker 2166:
2167: /* integer arguments */
2168: dump_cfg_int(sServerKeyBits, o->server_key_bits);
2169: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
2170: dump_cfg_int(sKeyRegenerationTime, o->key_regeneration_time);
2171: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
2172: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1.189 djm 2173: dump_cfg_int(sMaxSessions, o->max_sessions);
1.182 dtucker 2174: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
2175: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1.263 dtucker 2176: dump_cfg_oct(sStreamLocalBindMask, o->fwd_opts.streamlocal_bind_mask);
1.182 dtucker 2177:
2178: /* formatted integer arguments */
2179: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
2180: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
2181: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
2182: dump_cfg_fmtint(sRhostsRSAAuthentication, o->rhosts_rsa_authentication);
2183: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
2184: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
2185: o->hostbased_uses_name_from_packet_only);
2186: dump_cfg_fmtint(sRSAAuthentication, o->rsa_authentication);
2187: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1.187 djm 2188: #ifdef KRB5
1.182 dtucker 2189: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
2190: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
2191: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
2192: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1.187 djm 2193: #endif
2194: #ifdef GSSAPI
1.182 dtucker 2195: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
2196: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1.187 djm 2197: #endif
1.182 dtucker 2198: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
2199: dump_cfg_fmtint(sKbdInteractiveAuthentication,
2200: o->kbd_interactive_authentication);
2201: dump_cfg_fmtint(sChallengeResponseAuthentication,
2202: o->challenge_response_authentication);
2203: dump_cfg_fmtint(sPrintMotd, o->print_motd);
2204: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
2205: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
2206: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1.244 djm 2207: dump_cfg_fmtint(sPermitTTY, o->permit_tty);
1.250 djm 2208: dump_cfg_fmtint(sPermitUserRC, o->permit_user_rc);
1.182 dtucker 2209: dump_cfg_fmtint(sStrictModes, o->strict_modes);
2210: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
2211: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
2212: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
2213: dump_cfg_fmtint(sUseLogin, o->use_login);
2214: dump_cfg_fmtint(sCompression, o->compression);
1.251 millert 2215: dump_cfg_fmtint(sGatewayPorts, o->fwd_opts.gateway_ports);
1.182 dtucker 2216: dump_cfg_fmtint(sUseDNS, o->use_dns);
2217: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1.261 dtucker 2218: dump_cfg_fmtint(sAllowAgentForwarding, o->allow_agent_forwarding);
1.251 millert 2219: dump_cfg_fmtint(sAllowStreamLocalForwarding, o->allow_streamlocal_forwarding);
1.182 dtucker 2220: dump_cfg_fmtint(sUsePrivilegeSeparation, use_privsep);
1.256 djm 2221: dump_cfg_fmtint(sFingerprintHash, o->fingerprint_hash);
1.182 dtucker 2222:
2223: /* string arguments */
2224: dump_cfg_string(sPidFile, o->pid_file);
2225: dump_cfg_string(sXAuthLocation, o->xauth_location);
1.252 djm 2226: dump_cfg_string(sCiphers, o->ciphers ? o->ciphers : KEX_SERVER_ENCRYPT);
2227: dump_cfg_string(sMacs, o->macs ? o->macs : KEX_SERVER_MAC);
1.182 dtucker 2228: dump_cfg_string(sBanner, o->banner);
2229: dump_cfg_string(sForceCommand, o->adm_forced_command);
1.201 dtucker 2230: dump_cfg_string(sChrootDirectory, o->chroot_directory);
1.204 djm 2231: dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
2232: dump_cfg_string(sRevokedKeys, o->revoked_keys_file);
1.208 djm 2233: dump_cfg_string(sAuthorizedPrincipalsFile,
2234: o->authorized_principals_file);
1.261 dtucker 2235: dump_cfg_string(sVersionAddendum, *o->version_addendum == '\0'
2236: ? "none" : o->version_addendum);
1.231 djm 2237: dump_cfg_string(sAuthorizedKeysCommand, o->authorized_keys_command);
2238: dump_cfg_string(sAuthorizedKeysCommandUser, o->authorized_keys_command_user);
1.270 djm 2239: dump_cfg_string(sAuthorizedPrincipalsCommand, o->authorized_principals_command);
2240: dump_cfg_string(sAuthorizedPrincipalsCommandUser, o->authorized_principals_command_user);
1.240 markus 2241: dump_cfg_string(sHostKeyAgent, o->host_key_agent);
1.252 djm 2242: dump_cfg_string(sKexAlgorithms,
1.253 djm 2243: o->kex_algorithms ? o->kex_algorithms : KEX_SERVER_KEX);
1.258 djm 2244: dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types ?
2245: o->hostbased_key_types : KEX_DEFAULT_PK_ALG);
1.276 markus 2246: dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms ?
2247: o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
1.258 djm 2248: dump_cfg_string(sPubkeyAcceptedKeyTypes, o->pubkey_key_types ?
2249: o->pubkey_key_types : KEX_DEFAULT_PK_ALG);
1.182 dtucker 2250:
2251: /* string arguments requiring a lookup */
2252: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
2253: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
2254:
2255: /* string array arguments */
1.219 djm 2256: dump_cfg_strarray_oneline(sAuthorizedKeysFile, o->num_authkeys_files,
2257: o->authorized_keys_files);
1.182 dtucker 2258: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
2259: o->host_key_files);
1.261 dtucker 2260: dump_cfg_strarray(sHostCertificate, o->num_host_cert_files,
1.203 djm 2261: o->host_cert_files);
1.182 dtucker 2262: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
2263: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
2264: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
2265: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
2266: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1.232 djm 2267: dump_cfg_strarray_oneline(sAuthenticationMethods,
2268: o->num_auth_methods, o->auth_methods);
1.182 dtucker 2269:
2270: /* other arguments */
2271: for (i = 0; i < o->num_subsystems; i++)
2272: printf("subsystem %s %s\n", o->subsystem_name[i],
2273: o->subsystem_args[i]);
2274:
2275: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
2276: o->max_startups_rate, o->max_startups);
2277:
2278: for (i = 0; tunmode_desc[i].val != -1; i++)
2279: if (tunmode_desc[i].val == o->permit_tun) {
2280: s = tunmode_desc[i].text;
2281: break;
2282: }
2283: dump_cfg_string(sPermitTunnel, s);
1.213 djm 2284:
1.214 stevesk 2285: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2286: printf("%s\n", iptos2str(o->ip_qos_bulk));
1.235 dtucker 2287:
1.241 djm 2288: printf("rekeylimit %lld %d\n", (long long)o->rekey_limit,
2289: o->rekey_interval);
1.182 dtucker 2290:
2291: channel_print_adm_permitted_opens();
1.1 deraadt 2292: }
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