Annotation of src/usr.bin/ssh/servconf.c, Revision 1.388
1.226 dtucker 1:
1.388 ! dtucker 2: /* $OpenBSD: servconf.c,v 1.387 2022/11/07 10:02:59 dtucker 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>
1.315 djm 17: #include <sys/sysctl.h>
1.366 markus 18: #include <sys/stat.h>
1.154 stevesk 19:
1.213 djm 20: #include <netinet/in.h>
21: #include <netinet/ip.h>
1.315 djm 22: #include <net/route.h>
1.213 djm 23:
1.235 dtucker 24: #include <ctype.h>
1.360 djm 25: #include <glob.h>
1.154 stevesk 26: #include <netdb.h>
1.165 dtucker 27: #include <pwd.h>
1.162 stevesk 28: #include <stdio.h>
1.161 stevesk 29: #include <stdlib.h>
1.160 stevesk 30: #include <string.h>
1.164 deraadt 31: #include <signal.h>
1.155 stevesk 32: #include <unistd.h>
1.259 deraadt 33: #include <limits.h>
1.164 deraadt 34: #include <stdarg.h>
1.182 dtucker 35: #include <errno.h>
1.236 dtucker 36: #include <util.h>
1.1 deraadt 37:
1.164 deraadt 38: #include "xmalloc.h"
1.1 deraadt 39: #include "ssh.h"
1.62 markus 40: #include "log.h"
1.338 markus 41: #include "sshbuf.h"
1.251 millert 42: #include "misc.h"
1.1 deraadt 43: #include "servconf.h"
1.33 markus 44: #include "compat.h"
1.60 markus 45: #include "pathnames.h"
1.62 markus 46: #include "cipher.h"
1.339 markus 47: #include "sshkey.h"
1.66 markus 48: #include "kex.h"
49: #include "mac.h"
1.153 dtucker 50: #include "match.h"
1.156 dtucker 51: #include "channels.h"
1.165 dtucker 52: #include "groupaccess.h"
1.226 dtucker 53: #include "canohost.h"
54: #include "packet.h"
1.338 markus 55: #include "ssherr.h"
1.232 djm 56: #include "hostfile.h"
57: #include "auth.h"
1.252 djm 58: #include "myproposal.h"
1.256 djm 59: #include "digest.h"
1.345 djm 60:
1.315 djm 61: static void add_listen_addr(ServerOptions *, const char *,
62: const char *, int);
63: static void add_one_listen_addr(ServerOptions *, const char *,
64: const char *, int);
1.364 djm 65: static void parse_server_config_depth(ServerOptions *options,
66: const char *filename, struct sshbuf *conf, struct include_list *includes,
1.360 djm 67: struct connection_info *connectinfo, int flags, int *activep, int depth);
1.29 markus 68:
1.102 provos 69: /* Use of privilege separation or not */
70: extern int use_privsep;
1.338 markus 71: extern struct sshbuf *cfg;
1.62 markus 72:
1.1 deraadt 73: /* Initializes the server options to their default values. */
74:
1.34 markus 75: void
1.25 markus 76: initialize_server_options(ServerOptions *options)
1.1 deraadt 77: {
1.25 markus 78: memset(options, 0, sizeof(*options));
1.29 markus 79: options->num_ports = 0;
80: options->ports_from_cmdline = 0;
1.266 dtucker 81: options->queued_listen_addrs = NULL;
82: options->num_queued_listens = 0;
1.29 markus 83: options->listen_addrs = NULL;
1.315 djm 84: options->num_listen_addrs = 0;
1.138 djm 85: options->address_family = -1;
1.316 djm 86: options->routing_domain = NULL;
1.54 markus 87: options->num_host_key_files = 0;
1.203 djm 88: options->num_host_cert_files = 0;
1.240 markus 89: options->host_key_agent = NULL;
1.36 markus 90: options->pid_file = NULL;
1.25 markus 91: options->login_grace_time = -1;
1.279 chris 92: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 93: options->ignore_rhosts = -1;
94: options->ignore_user_known_hosts = -1;
95: options->print_motd = -1;
1.72 stevesk 96: options->print_lastlog = -1;
1.25 markus 97: options->x11_forwarding = -1;
98: options->x11_display_offset = -1;
1.99 stevesk 99: options->x11_use_localhost = -1;
1.244 djm 100: options->permit_tty = -1;
1.250 djm 101: options->permit_user_rc = -1;
1.42 markus 102: options->xauth_location = NULL;
1.25 markus 103: options->strict_modes = -1;
1.129 markus 104: options->tcp_keep_alive = -1;
1.101 markus 105: options->log_facility = SYSLOG_FACILITY_NOT_SET;
106: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.370 djm 107: options->num_log_verbose = 0;
108: options->log_verbose = NULL;
1.75 markus 109: options->hostbased_authentication = -1;
110: options->hostbased_uses_name_from_packet_only = -1;
1.375 dtucker 111: options->hostbased_accepted_algos = NULL;
1.276 markus 112: options->hostkeyalgorithms = NULL;
1.54 markus 113: options->pubkey_authentication = -1;
1.354 djm 114: options->pubkey_auth_options = -1;
1.374 dtucker 115: options->pubkey_accepted_algos = NULL;
1.25 markus 116: options->kerberos_authentication = -1;
117: options->kerberos_or_local_passwd = -1;
118: options->kerberos_ticket_cleanup = -1;
1.130 jakob 119: options->kerberos_get_afs_token = -1;
1.125 markus 120: options->gss_authentication=-1;
121: options->gss_cleanup_creds = -1;
1.271 djm 122: options->gss_strict_acceptor = -1;
1.25 markus 123: options->password_authentication = -1;
1.52 markus 124: options->kbd_interactive_authentication = -1;
1.25 markus 125: options->permit_empty_passwd = -1;
1.113 markus 126: options->permit_user_env = -1;
1.367 djm 127: options->permit_user_env_allowlist = NULL;
1.111 markus 128: options->compression = -1;
1.235 dtucker 129: options->rekey_limit = -1;
130: options->rekey_interval = -1;
1.53 markus 131: options->allow_tcp_forwarding = -1;
1.251 millert 132: options->allow_streamlocal_forwarding = -1;
1.178 pyr 133: options->allow_agent_forwarding = -1;
1.25 markus 134: options->num_allow_users = 0;
135: options->num_deny_users = 0;
136: options->num_allow_groups = 0;
137: options->num_deny_groups = 0;
1.33 markus 138: options->ciphers = NULL;
1.66 markus 139: options->macs = NULL;
1.211 djm 140: options->kex_algorithms = NULL;
1.341 djm 141: options->ca_sign_algorithms = NULL;
1.251 millert 142: options->fwd_opts.gateway_ports = -1;
143: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
144: options->fwd_opts.streamlocal_bind_unlink = -1;
1.43 jakob 145: options->num_subsystems = 0;
1.50 markus 146: options->max_startups_begin = -1;
147: options->max_startups_rate = -1;
1.46 markus 148: options->max_startups = -1;
1.372 dtucker 149: options->per_source_max_startups = -1;
150: options->per_source_masklen_ipv4 = -1;
151: options->per_source_masklen_ipv6 = -1;
1.133 dtucker 152: options->max_authtries = -1;
1.180 djm 153: options->max_sessions = -1;
1.57 markus 154: options->banner = NULL;
1.122 markus 155: options->use_dns = -1;
1.77 beck 156: options->client_alive_interval = -1;
157: options->client_alive_count_max = -1;
1.219 djm 158: options->num_authkeys_files = 0;
1.131 djm 159: options->num_accept_env = 0;
1.332 djm 160: options->num_setenv = 0;
1.145 reyk 161: options->permit_tun = -1;
1.310 djm 162: options->permitted_opens = NULL;
1.330 djm 163: options->permitted_listens = NULL;
1.158 dtucker 164: options->adm_forced_command = NULL;
1.176 djm 165: options->chroot_directory = NULL;
1.231 djm 166: options->authorized_keys_command = NULL;
167: options->authorized_keys_command_user = NULL;
1.204 djm 168: options->revoked_keys_file = NULL;
1.355 djm 169: options->sk_provider = NULL;
1.204 djm 170: options->trusted_user_ca_keys = NULL;
1.208 djm 171: options->authorized_principals_file = NULL;
1.270 djm 172: options->authorized_principals_command = NULL;
173: options->authorized_principals_command_user = NULL;
1.213 djm 174: options->ip_qos_interactive = -1;
175: options->ip_qos_bulk = -1;
1.225 djm 176: options->version_addendum = NULL;
1.256 djm 177: options->fingerprint_hash = -1;
1.301 djm 178: options->disable_forwarding = -1;
1.309 djm 179: options->expose_userauth_info = -1;
1.386 djm 180: options->required_rsa_size = -1;
1.1 deraadt 181: }
182:
1.257 djm 183: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
184: static int
185: option_clear_or_none(const char *o)
186: {
187: return o == NULL || strcasecmp(o, "none") == 0;
188: }
189:
1.282 djm 190: static void
191: assemble_algorithms(ServerOptions *o)
192: {
1.341 djm 193: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.358 dtucker 194: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.340 djm 195: int r;
1.335 djm 196:
197: all_cipher = cipher_alg_list(',', 0);
198: all_mac = mac_alg_list(',');
199: all_kex = kex_alg_list(',');
200: all_key = sshkey_alg_list(0, 0, 1, ',');
1.341 djm 201: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.358 dtucker 202: /* remove unsupported algos from default lists */
1.367 djm 203: def_cipher = match_filter_allowlist(KEX_SERVER_ENCRYPT, all_cipher);
204: def_mac = match_filter_allowlist(KEX_SERVER_MAC, all_mac);
205: def_kex = match_filter_allowlist(KEX_SERVER_KEX, all_kex);
206: def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key);
207: def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.340 djm 208: #define ASSEMBLE(what, defaults, all) \
209: do { \
210: if ((r = kex_assemble_names(&o->what, defaults, all)) != 0) \
1.371 djm 211: fatal_fr(r, "%s", #what); \
1.340 djm 212: } while (0)
1.358 dtucker 213: ASSEMBLE(ciphers, def_cipher, all_cipher);
214: ASSEMBLE(macs, def_mac, all_mac);
215: ASSEMBLE(kex_algorithms, def_kex, all_kex);
216: ASSEMBLE(hostkeyalgorithms, def_key, all_key);
1.375 dtucker 217: ASSEMBLE(hostbased_accepted_algos, def_key, all_key);
1.374 dtucker 218: ASSEMBLE(pubkey_accepted_algos, def_key, all_key);
1.358 dtucker 219: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.340 djm 220: #undef ASSEMBLE
1.335 djm 221: free(all_cipher);
222: free(all_mac);
223: free(all_kex);
224: free(all_key);
1.341 djm 225: free(all_sig);
1.358 dtucker 226: free(def_cipher);
227: free(def_mac);
228: free(def_kex);
229: free(def_key);
230: free(def_sig);
1.282 djm 231: }
232:
1.314 djm 233: void
234: servconf_add_hostkey(const char *file, const int line,
1.344 djm 235: ServerOptions *options, const char *path, int userprovided)
1.314 djm 236: {
237: char *apath = derelativise_path(path);
238:
1.376 markus 239: opt_array_append2(file, line, "HostKey",
1.344 djm 240: &options->host_key_files, &options->host_key_file_userprovided,
241: &options->num_host_key_files, apath, userprovided);
1.314 djm 242: free(apath);
243: }
244:
245: void
246: servconf_add_hostcert(const char *file, const int line,
247: ServerOptions *options, const char *path)
248: {
249: char *apath = derelativise_path(path);
250:
1.376 markus 251: opt_array_append(file, line, "HostCertificate",
1.314 djm 252: &options->host_cert_files, &options->num_host_cert_files, apath);
253: free(apath);
254: }
255:
1.34 markus 256: void
1.25 markus 257: fill_default_server_options(ServerOptions *options)
1.1 deraadt 258: {
1.314 djm 259: u_int i;
1.257 djm 260:
1.54 markus 261: if (options->num_host_key_files == 0) {
1.293 naddy 262: /* fill default hostkeys */
1.314 djm 263: servconf_add_hostkey("[default]", 0, options,
1.344 djm 264: _PATH_HOST_RSA_KEY_FILE, 0);
1.314 djm 265: servconf_add_hostkey("[default]", 0, options,
1.344 djm 266: _PATH_HOST_ECDSA_KEY_FILE, 0);
1.314 djm 267: servconf_add_hostkey("[default]", 0, options,
1.344 djm 268: _PATH_HOST_ED25519_KEY_FILE, 0);
1.326 markus 269: #ifdef WITH_XMSS
1.325 markus 270: servconf_add_hostkey("[default]", 0, options,
1.344 djm 271: _PATH_HOST_XMSS_KEY_FILE, 0);
1.326 markus 272: #endif /* WITH_XMSS */
1.54 markus 273: }
1.203 djm 274: /* No certificates by default */
1.29 markus 275: if (options->num_ports == 0)
276: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.266 dtucker 277: if (options->address_family == -1)
278: options->address_family = AF_UNSPEC;
1.29 markus 279: if (options->listen_addrs == NULL)
1.315 djm 280: add_listen_addr(options, NULL, NULL, 0);
1.36 markus 281: if (options->pid_file == NULL)
1.257 djm 282: options->pid_file = xstrdup(_PATH_SSH_DAEMON_PID_FILE);
1.378 dtucker 283: if (options->moduli_file == NULL)
284: options->moduli_file = xstrdup(_PATH_DH_MODULI);
1.25 markus 285: if (options->login_grace_time == -1)
1.115 stevesk 286: options->login_grace_time = 120;
1.67 markus 287: if (options->permit_root_login == PERMIT_NOT_SET)
1.279 chris 288: options->permit_root_login = PERMIT_NO_PASSWD;
1.25 markus 289: if (options->ignore_rhosts == -1)
1.30 markus 290: options->ignore_rhosts = 1;
1.25 markus 291: if (options->ignore_user_known_hosts == -1)
292: options->ignore_user_known_hosts = 0;
293: if (options->print_motd == -1)
294: options->print_motd = 1;
1.72 stevesk 295: if (options->print_lastlog == -1)
296: options->print_lastlog = 1;
1.25 markus 297: if (options->x11_forwarding == -1)
1.30 markus 298: options->x11_forwarding = 0;
1.25 markus 299: if (options->x11_display_offset == -1)
1.30 markus 300: options->x11_display_offset = 10;
1.99 stevesk 301: if (options->x11_use_localhost == -1)
302: options->x11_use_localhost = 1;
1.42 markus 303: if (options->xauth_location == NULL)
1.257 djm 304: options->xauth_location = xstrdup(_PATH_XAUTH);
1.244 djm 305: if (options->permit_tty == -1)
306: options->permit_tty = 1;
1.250 djm 307: if (options->permit_user_rc == -1)
308: options->permit_user_rc = 1;
1.25 markus 309: if (options->strict_modes == -1)
310: options->strict_modes = 1;
1.129 markus 311: if (options->tcp_keep_alive == -1)
312: options->tcp_keep_alive = 1;
1.101 markus 313: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
1.25 markus 314: options->log_facility = SYSLOG_FACILITY_AUTH;
1.101 markus 315: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.58 markus 316: options->log_level = SYSLOG_LEVEL_INFO;
1.75 markus 317: if (options->hostbased_authentication == -1)
318: options->hostbased_authentication = 0;
319: if (options->hostbased_uses_name_from_packet_only == -1)
320: options->hostbased_uses_name_from_packet_only = 0;
1.54 markus 321: if (options->pubkey_authentication == -1)
322: options->pubkey_authentication = 1;
1.354 djm 323: if (options->pubkey_auth_options == -1)
324: options->pubkey_auth_options = 0;
1.25 markus 325: if (options->kerberos_authentication == -1)
1.107 markus 326: options->kerberos_authentication = 0;
1.25 markus 327: if (options->kerberos_or_local_passwd == -1)
328: options->kerberos_or_local_passwd = 1;
329: if (options->kerberos_ticket_cleanup == -1)
330: options->kerberos_ticket_cleanup = 1;
1.130 jakob 331: if (options->kerberos_get_afs_token == -1)
332: options->kerberos_get_afs_token = 0;
1.125 markus 333: if (options->gss_authentication == -1)
334: options->gss_authentication = 0;
335: if (options->gss_cleanup_creds == -1)
336: options->gss_cleanup_creds = 1;
1.271 djm 337: if (options->gss_strict_acceptor == -1)
1.302 djm 338: options->gss_strict_acceptor = 1;
1.25 markus 339: if (options->password_authentication == -1)
340: options->password_authentication = 1;
1.52 markus 341: if (options->kbd_interactive_authentication == -1)
1.381 dtucker 342: options->kbd_interactive_authentication = 1;
1.25 markus 343: if (options->permit_empty_passwd == -1)
1.30 markus 344: options->permit_empty_passwd = 0;
1.334 djm 345: if (options->permit_user_env == -1) {
1.113 markus 346: options->permit_user_env = 0;
1.367 djm 347: options->permit_user_env_allowlist = NULL;
1.334 djm 348: }
1.111 markus 349: if (options->compression == -1)
1.359 dtucker 350: #ifdef WITH_ZLIB
1.337 sf 351: options->compression = COMP_DELAYED;
1.359 dtucker 352: #else
353: options->compression = COMP_NONE;
354: #endif
355:
1.235 dtucker 356: if (options->rekey_limit == -1)
357: options->rekey_limit = 0;
358: if (options->rekey_interval == -1)
359: options->rekey_interval = 0;
1.53 markus 360: if (options->allow_tcp_forwarding == -1)
1.233 djm 361: options->allow_tcp_forwarding = FORWARD_ALLOW;
1.251 millert 362: if (options->allow_streamlocal_forwarding == -1)
363: options->allow_streamlocal_forwarding = FORWARD_ALLOW;
1.178 pyr 364: if (options->allow_agent_forwarding == -1)
365: options->allow_agent_forwarding = 1;
1.251 millert 366: if (options->fwd_opts.gateway_ports == -1)
367: options->fwd_opts.gateway_ports = 0;
1.46 markus 368: if (options->max_startups == -1)
1.234 dtucker 369: options->max_startups = 100;
1.50 markus 370: if (options->max_startups_rate == -1)
1.234 dtucker 371: options->max_startups_rate = 30; /* 30% */
1.50 markus 372: if (options->max_startups_begin == -1)
1.234 dtucker 373: options->max_startups_begin = 10;
1.372 dtucker 374: if (options->per_source_max_startups == -1)
375: options->per_source_max_startups = INT_MAX;
376: if (options->per_source_masklen_ipv4 == -1)
377: options->per_source_masklen_ipv4 = 32;
378: if (options->per_source_masklen_ipv6 == -1)
379: options->per_source_masklen_ipv6 = 128;
1.133 dtucker 380: if (options->max_authtries == -1)
381: options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
1.180 djm 382: if (options->max_sessions == -1)
383: options->max_sessions = DEFAULT_SESSIONS_MAX;
1.122 markus 384: if (options->use_dns == -1)
1.260 deraadt 385: options->use_dns = 0;
1.77 beck 386: if (options->client_alive_interval == -1)
1.95 deraadt 387: options->client_alive_interval = 0;
1.77 beck 388: if (options->client_alive_count_max == -1)
389: options->client_alive_count_max = 3;
1.219 djm 390: if (options->num_authkeys_files == 0) {
1.376 markus 391: opt_array_append("[default]", 0, "AuthorizedKeysFiles",
1.314 djm 392: &options->authorized_keys_files,
393: &options->num_authkeys_files,
394: _PATH_SSH_USER_PERMITTED_KEYS);
1.376 markus 395: opt_array_append("[default]", 0, "AuthorizedKeysFiles",
1.314 djm 396: &options->authorized_keys_files,
397: &options->num_authkeys_files,
398: _PATH_SSH_USER_PERMITTED_KEYS2);
1.219 djm 399: }
1.145 reyk 400: if (options->permit_tun == -1)
1.146 reyk 401: options->permit_tun = SSH_TUNMODE_NO;
1.213 djm 402: if (options->ip_qos_interactive == -1)
1.327 job 403: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.213 djm 404: if (options->ip_qos_bulk == -1)
1.327 job 405: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.225 djm 406: if (options->version_addendum == NULL)
407: options->version_addendum = xstrdup("");
1.251 millert 408: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
409: options->fwd_opts.streamlocal_bind_mask = 0177;
410: if (options->fwd_opts.streamlocal_bind_unlink == -1)
411: options->fwd_opts.streamlocal_bind_unlink = 0;
1.256 djm 412: if (options->fingerprint_hash == -1)
413: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.301 djm 414: if (options->disable_forwarding == -1)
415: options->disable_forwarding = 0;
1.309 djm 416: if (options->expose_userauth_info == -1)
417: options->expose_userauth_info = 0;
1.355 djm 418: if (options->sk_provider == NULL)
419: options->sk_provider = xstrdup("internal");
1.386 djm 420: if (options->required_rsa_size == -1)
421: options->required_rsa_size = SSH_RSA_MINIMUM_MODULUS_SIZE;
1.277 djm 422:
1.282 djm 423: assemble_algorithms(options);
1.277 djm 424:
1.285 djm 425: /* Turn privilege separation and sandboxing on by default */
1.102 provos 426: if (use_privsep == -1)
1.285 djm 427: use_privsep = PRIVSEP_ON;
1.257 djm 428:
429: #define CLEAR_ON_NONE(v) \
430: do { \
431: if (option_clear_or_none(v)) { \
432: free(v); \
433: v = NULL; \
434: } \
435: } while(0)
436: CLEAR_ON_NONE(options->pid_file);
437: CLEAR_ON_NONE(options->xauth_location);
438: CLEAR_ON_NONE(options->banner);
439: CLEAR_ON_NONE(options->trusted_user_ca_keys);
440: CLEAR_ON_NONE(options->revoked_keys_file);
1.355 djm 441: CLEAR_ON_NONE(options->sk_provider);
1.267 djm 442: CLEAR_ON_NONE(options->authorized_principals_file);
1.283 djm 443: CLEAR_ON_NONE(options->adm_forced_command);
444: CLEAR_ON_NONE(options->chroot_directory);
1.316 djm 445: CLEAR_ON_NONE(options->routing_domain);
1.357 djm 446: CLEAR_ON_NONE(options->host_key_agent);
1.257 djm 447: for (i = 0; i < options->num_host_key_files; i++)
448: CLEAR_ON_NONE(options->host_key_files[i]);
449: for (i = 0; i < options->num_host_cert_files; i++)
450: CLEAR_ON_NONE(options->host_cert_files[i]);
451: #undef CLEAR_ON_NONE
1.291 djm 452:
453: /* Similar handling for AuthenticationMethods=any */
454: if (options->num_auth_methods == 1 &&
455: strcmp(options->auth_methods[0], "any") == 0) {
456: free(options->auth_methods[0]);
457: options->auth_methods[0] = NULL;
458: options->num_auth_methods = 0;
459: }
1.1 deraadt 460: }
461:
462: /* Keyword tokens. */
1.25 markus 463: typedef enum {
464: sBadOption, /* == unknown option */
1.293 naddy 465: sPort, sHostKeyFile, sLoginGraceTime,
1.370 djm 466: sPermitRootLogin, sLogFacility, sLogLevel, sLogVerbose,
1.25 markus 467: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.382 millert 468: sKerberosGetAFSToken, sPasswordAuthentication,
469: sKbdInteractiveAuthentication, sListenAddress, sAddressFamily,
1.72 stevesk 470: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
1.99 stevesk 471: sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
1.244 djm 472: sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
1.294 djm 473: sPermitUserEnvironment, sAllowTcpForwarding, sCompression,
1.235 dtucker 474: sRekeyLimit, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.378 dtucker 475: sIgnoreUserKnownHosts, sCiphers, sMacs, sPidFile, sModuliFile,
1.374 dtucker 476: sGatewayPorts, sPubkeyAuthentication, sPubkeyAcceptedAlgorithms,
1.258 djm 477: sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
1.122 markus 478: sBanner, sUseDNS, sHostbasedAuthentication,
1.375 dtucker 479: sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedAlgorithms,
1.372 dtucker 480: sHostKeyAlgorithms, sPerSourceMaxStartups, sPerSourceNetBlockSize,
1.258 djm 481: sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
1.271 djm 482: sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
1.332 djm 483: sAcceptEnv, sSetEnv, sPermitTunnel,
1.330 djm 484: sMatch, sPermitOpen, sPermitListen, sForceCommand, sChrootDirectory,
1.200 dtucker 485: sUsePrivilegeSeparation, sAllowAgentForwarding,
1.360 djm 486: sHostCertificate, sInclude,
1.208 djm 487: sRevokedKeys, sTrustedUserCAKeys, sAuthorizedPrincipalsFile,
1.270 djm 488: sAuthorizedPrincipalsCommand, sAuthorizedPrincipalsCommandUser,
1.341 djm 489: sKexAlgorithms, sCASignatureAlgorithms, sIPQoS, sVersionAddendum,
1.231 djm 490: sAuthorizedKeysCommand, sAuthorizedKeysCommandUser,
1.250 djm 491: sAuthenticationMethods, sHostKeyAgent, sPermitUserRC,
1.251 millert 492: sStreamLocalBindMask, sStreamLocalBindUnlink,
1.301 djm 493: sAllowStreamLocalForwarding, sFingerprintHash, sDisableForwarding,
1.355 djm 494: sExposeAuthInfo, sRDomain, sPubkeyAuthOptions, sSecurityKeyProvider,
1.386 djm 495: sRequiredRSASize,
1.295 djm 496: sDeprecated, sIgnore, sUnsupported
1.1 deraadt 497: } ServerOpCodes;
498:
1.360 djm 499: #define SSHCFG_GLOBAL 0x01 /* allowed in main section of config */
500: #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
501: #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
502: #define SSHCFG_NEVERMATCH 0x04 /* Match never matches; internal only */
1.365 djm 503: #define SSHCFG_MATCH_ONLY 0x08 /* Match only in conditional blocks; internal only */
1.153 dtucker 504:
1.1 deraadt 505: /* Textual representation of the tokens. */
1.25 markus 506: static struct {
507: const char *name;
508: ServerOpCodes opcode;
1.153 dtucker 509: u_int flags;
1.25 markus 510: } keywords[] = {
1.153 dtucker 511: { "port", sPort, SSHCFG_GLOBAL },
512: { "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
513: { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
1.240 markus 514: { "hostkeyagent", sHostKeyAgent, SSHCFG_GLOBAL },
1.153 dtucker 515: { "pidfile", sPidFile, SSHCFG_GLOBAL },
1.378 dtucker 516: { "modulifile", sModuliFile, SSHCFG_GLOBAL },
1.293 naddy 517: { "serverkeybits", sDeprecated, SSHCFG_GLOBAL },
1.153 dtucker 518: { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
1.293 naddy 519: { "keyregenerationinterval", sDeprecated, SSHCFG_GLOBAL },
1.175 dtucker 520: { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
1.153 dtucker 521: { "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
1.308 djm 522: { "loglevel", sLogLevel, SSHCFG_ALL },
1.370 djm 523: { "logverbose", sLogVerbose, SSHCFG_ALL },
1.153 dtucker 524: { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
1.293 naddy 525: { "rhostsrsaauthentication", sDeprecated, SSHCFG_ALL },
1.168 dtucker 526: { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
1.209 djm 527: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
1.377 dtucker 528: { "hostbasedacceptedalgorithms", sHostbasedAcceptedAlgorithms, SSHCFG_ALL },
1.375 dtucker 529: { "hostbasedacceptedkeytypes", sHostbasedAcceptedAlgorithms, SSHCFG_ALL }, /* obsolete */
1.276 markus 530: { "hostkeyalgorithms", sHostKeyAlgorithms, SSHCFG_GLOBAL },
1.293 naddy 531: { "rsaauthentication", sDeprecated, SSHCFG_ALL },
1.168 dtucker 532: { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
1.377 dtucker 533: { "pubkeyacceptedalgorithms", sPubkeyAcceptedAlgorithms, SSHCFG_ALL },
1.374 dtucker 534: { "pubkeyacceptedkeytypes", sPubkeyAcceptedAlgorithms, SSHCFG_ALL }, /* obsolete */
1.354 djm 535: { "pubkeyauthoptions", sPubkeyAuthOptions, SSHCFG_ALL },
1.153 dtucker 536: { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
1.123 markus 537: #ifdef KRB5
1.168 dtucker 538: { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
1.153 dtucker 539: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
540: { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
541: { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
1.121 jakob 542: #else
1.168 dtucker 543: { "kerberosauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 544: { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
545: { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
546: { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
1.126 markus 547: #endif
1.153 dtucker 548: { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
549: { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 550: #ifdef GSSAPI
1.168 dtucker 551: { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
1.153 dtucker 552: { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
1.271 djm 553: { "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
1.125 markus 554: #else
1.168 dtucker 555: { "gssapiauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 556: { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
1.271 djm 557: { "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 558: #endif
1.168 dtucker 559: { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
560: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
1.381 dtucker 561: { "challengeresponseauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL }, /* alias */
562: { "skeyauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL }, /* alias */
1.153 dtucker 563: { "checkmail", sDeprecated, SSHCFG_GLOBAL },
564: { "listenaddress", sListenAddress, SSHCFG_GLOBAL },
565: { "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
566: { "printmotd", sPrintMotd, SSHCFG_GLOBAL },
567: { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
1.362 djm 568: { "ignorerhosts", sIgnoreRhosts, SSHCFG_ALL },
1.153 dtucker 569: { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
1.157 dtucker 570: { "x11forwarding", sX11Forwarding, SSHCFG_ALL },
571: { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
572: { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
1.153 dtucker 573: { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
574: { "strictmodes", sStrictModes, SSHCFG_GLOBAL },
1.188 djm 575: { "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
1.153 dtucker 576: { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
1.294 djm 577: { "uselogin", sDeprecated, SSHCFG_GLOBAL },
1.153 dtucker 578: { "compression", sCompression, SSHCFG_GLOBAL },
1.235 dtucker 579: { "rekeylimit", sRekeyLimit, SSHCFG_ALL },
1.153 dtucker 580: { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
581: { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
582: { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
1.178 pyr 583: { "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
1.227 markus 584: { "allowusers", sAllowUsers, SSHCFG_ALL },
585: { "denyusers", sDenyUsers, SSHCFG_ALL },
586: { "allowgroups", sAllowGroups, SSHCFG_ALL },
587: { "denygroups", sDenyGroups, SSHCFG_ALL },
1.153 dtucker 588: { "ciphers", sCiphers, SSHCFG_GLOBAL },
589: { "macs", sMacs, SSHCFG_GLOBAL },
1.295 djm 590: { "protocol", sIgnore, SSHCFG_GLOBAL },
1.153 dtucker 591: { "gatewayports", sGatewayPorts, SSHCFG_ALL },
592: { "subsystem", sSubsystem, SSHCFG_GLOBAL },
593: { "maxstartups", sMaxStartups, SSHCFG_GLOBAL },
1.372 dtucker 594: { "persourcemaxstartups", sPerSourceMaxStartups, SSHCFG_GLOBAL },
595: { "persourcenetblocksize", sPerSourceNetBlockSize, SSHCFG_GLOBAL },
1.184 dtucker 596: { "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
1.180 djm 597: { "maxsessions", sMaxSessions, SSHCFG_ALL },
1.168 dtucker 598: { "banner", sBanner, SSHCFG_ALL },
1.153 dtucker 599: { "usedns", sUseDNS, SSHCFG_GLOBAL },
600: { "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
601: { "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
1.300 markus 602: { "clientaliveinterval", sClientAliveInterval, SSHCFG_ALL },
603: { "clientalivecountmax", sClientAliveCountMax, SSHCFG_ALL },
1.209 djm 604: { "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_ALL },
1.219 djm 605: { "authorizedkeysfile2", sDeprecated, SSHCFG_ALL },
1.306 djm 606: { "useprivilegeseparation", sDeprecated, SSHCFG_GLOBAL},
1.227 markus 607: { "acceptenv", sAcceptEnv, SSHCFG_ALL },
1.332 djm 608: { "setenv", sSetEnv, SSHCFG_ALL },
1.209 djm 609: { "permittunnel", sPermitTunnel, SSHCFG_ALL },
1.244 djm 610: { "permittty", sPermitTTY, SSHCFG_ALL },
1.250 djm 611: { "permituserrc", sPermitUserRC, SSHCFG_ALL },
1.153 dtucker 612: { "match", sMatch, SSHCFG_ALL },
1.156 dtucker 613: { "permitopen", sPermitOpen, SSHCFG_ALL },
1.330 djm 614: { "permitlisten", sPermitListen, SSHCFG_ALL },
1.158 dtucker 615: { "forcecommand", sForceCommand, SSHCFG_ALL },
1.176 djm 616: { "chrootdirectory", sChrootDirectory, SSHCFG_ALL },
1.203 djm 617: { "hostcertificate", sHostCertificate, SSHCFG_GLOBAL },
1.204 djm 618: { "revokedkeys", sRevokedKeys, SSHCFG_ALL },
619: { "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
1.209 djm 620: { "authorizedprincipalsfile", sAuthorizedPrincipalsFile, SSHCFG_ALL },
1.211 djm 621: { "kexalgorithms", sKexAlgorithms, SSHCFG_GLOBAL },
1.360 djm 622: { "include", sInclude, SSHCFG_ALL },
1.213 djm 623: { "ipqos", sIPQoS, SSHCFG_ALL },
1.231 djm 624: { "authorizedkeyscommand", sAuthorizedKeysCommand, SSHCFG_ALL },
625: { "authorizedkeyscommanduser", sAuthorizedKeysCommandUser, SSHCFG_ALL },
1.270 djm 626: { "authorizedprincipalscommand", sAuthorizedPrincipalsCommand, SSHCFG_ALL },
627: { "authorizedprincipalscommanduser", sAuthorizedPrincipalsCommandUser, SSHCFG_ALL },
1.225 djm 628: { "versionaddendum", sVersionAddendum, SSHCFG_GLOBAL },
1.232 djm 629: { "authenticationmethods", sAuthenticationMethods, SSHCFG_ALL },
1.251 millert 630: { "streamlocalbindmask", sStreamLocalBindMask, SSHCFG_ALL },
631: { "streamlocalbindunlink", sStreamLocalBindUnlink, SSHCFG_ALL },
632: { "allowstreamlocalforwarding", sAllowStreamLocalForwarding, SSHCFG_ALL },
1.256 djm 633: { "fingerprinthash", sFingerprintHash, SSHCFG_GLOBAL },
1.301 djm 634: { "disableforwarding", sDisableForwarding, SSHCFG_ALL },
1.309 djm 635: { "exposeauthinfo", sExposeAuthInfo, SSHCFG_ALL },
1.316 djm 636: { "rdomain", sRDomain, SSHCFG_ALL },
1.342 djm 637: { "casignaturealgorithms", sCASignatureAlgorithms, SSHCFG_ALL },
1.355 djm 638: { "securitykeyprovider", sSecurityKeyProvider, SSHCFG_GLOBAL },
1.386 djm 639: { "requiredrsasize", sRequiredRSASize, SSHCFG_ALL },
1.153 dtucker 640: { NULL, sBadOption, 0 }
1.1 deraadt 641: };
642:
1.182 dtucker 643: static struct {
644: int val;
645: char *text;
646: } tunmode_desc[] = {
647: { SSH_TUNMODE_NO, "no" },
648: { SSH_TUNMODE_POINTOPOINT, "point-to-point" },
649: { SSH_TUNMODE_ETHERNET, "ethernet" },
650: { SSH_TUNMODE_YES, "yes" },
651: { -1, NULL }
652: };
653:
1.329 djm 654: /* Returns an opcode name from its number */
655:
656: static const char *
657: lookup_opcode_name(ServerOpCodes code)
658: {
659: u_int i;
660:
661: for (i = 0; keywords[i].name != NULL; i++)
662: if (keywords[i].opcode == code)
663: return(keywords[i].name);
664: return "UNKNOWN";
665: }
666:
667:
1.27 markus 668: /*
1.73 stevesk 669: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 670: */
1.1 deraadt 671:
1.34 markus 672: static ServerOpCodes
1.25 markus 673: parse_token(const char *cp, const char *filename,
1.153 dtucker 674: int linenum, u_int *flags)
1.1 deraadt 675: {
1.55 markus 676: u_int i;
1.1 deraadt 677:
1.25 markus 678: for (i = 0; keywords[i].name; i++)
1.153 dtucker 679: if (strcasecmp(cp, keywords[i].name) == 0) {
680: *flags = keywords[i].flags;
1.25 markus 681: return keywords[i].opcode;
1.153 dtucker 682: }
1.25 markus 683:
1.78 stevesk 684: error("%s: line %d: Bad configuration option: %s",
685: filename, linenum, cp);
1.25 markus 686: return sBadOption;
1.1 deraadt 687: }
688:
1.202 djm 689: char *
690: derelativise_path(const char *path)
691: {
1.259 deraadt 692: char *expanded, *ret, cwd[PATH_MAX];
1.202 djm 693:
1.257 djm 694: if (strcasecmp(path, "none") == 0)
695: return xstrdup("none");
1.202 djm 696: expanded = tilde_expand_filename(path, getuid());
1.343 djm 697: if (path_absolute(expanded))
1.202 djm 698: return expanded;
1.207 djm 699: if (getcwd(cwd, sizeof(cwd)) == NULL)
1.371 djm 700: fatal_f("getcwd: %s", strerror(errno));
1.202 djm 701: xasprintf(&ret, "%s/%s", cwd, expanded);
1.239 djm 702: free(expanded);
1.202 djm 703: return ret;
704: }
705:
1.84 itojun 706: static void
1.315 djm 707: add_listen_addr(ServerOptions *options, const char *addr,
708: const char *rdomain, int port)
1.74 stevesk 709: {
1.142 djm 710: u_int i;
1.74 stevesk 711:
1.315 djm 712: if (port > 0)
713: add_one_listen_addr(options, addr, rdomain, port);
714: else {
715: for (i = 0; i < options->num_ports; i++) {
716: add_one_listen_addr(options, addr, rdomain,
717: options->ports[i]);
718: }
719: }
1.74 stevesk 720: }
721:
1.84 itojun 722: static void
1.315 djm 723: add_one_listen_addr(ServerOptions *options, const char *addr,
724: const char *rdomain, int port)
1.29 markus 725: {
726: struct addrinfo hints, *ai, *aitop;
727: char strport[NI_MAXSERV];
728: int gaierr;
1.315 djm 729: u_int i;
730:
731: /* Find listen_addrs entry for this rdomain */
732: for (i = 0; i < options->num_listen_addrs; i++) {
733: if (rdomain == NULL && options->listen_addrs[i].rdomain == NULL)
734: break;
735: if (rdomain == NULL || options->listen_addrs[i].rdomain == NULL)
736: continue;
737: if (strcmp(rdomain, options->listen_addrs[i].rdomain) == 0)
738: break;
739: }
740: if (i >= options->num_listen_addrs) {
741: /* No entry for this rdomain; allocate one */
742: if (i >= INT_MAX)
1.371 djm 743: fatal_f("too many listen addresses");
1.315 djm 744: options->listen_addrs = xrecallocarray(options->listen_addrs,
745: options->num_listen_addrs, options->num_listen_addrs + 1,
746: sizeof(*options->listen_addrs));
747: i = options->num_listen_addrs++;
748: if (rdomain != NULL)
749: options->listen_addrs[i].rdomain = xstrdup(rdomain);
750: }
751: /* options->listen_addrs[i] points to the addresses for this rdomain */
1.29 markus 752:
1.74 stevesk 753: memset(&hints, 0, sizeof(hints));
1.138 djm 754: hints.ai_family = options->address_family;
1.74 stevesk 755: hints.ai_socktype = SOCK_STREAM;
756: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
1.194 djm 757: snprintf(strport, sizeof strport, "%d", port);
1.74 stevesk 758: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
759: fatal("bad addr or host: %s (%s)",
760: addr ? addr : "<NULL>",
1.173 dtucker 761: ssh_gai_strerror(gaierr));
1.74 stevesk 762: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
763: ;
1.315 djm 764: ai->ai_next = options->listen_addrs[i].addrs;
765: options->listen_addrs[i].addrs = aitop;
766: }
767:
768: /* Returns nonzero if the routing domain name is valid */
769: static int
770: valid_rdomain(const char *name)
771: {
772: const char *errstr;
773: long long num;
774: struct rt_tableinfo info;
775: int mib[6];
776: size_t miblen = sizeof(mib);
777:
778: if (name == NULL)
779: return 1;
780:
781: num = strtonum(name, 0, 255, &errstr);
782: if (errstr != NULL)
783: return 0;
784:
785: /* Check whether the table actually exists */
786: memset(mib, 0, sizeof(mib));
787: mib[0] = CTL_NET;
788: mib[1] = PF_ROUTE;
789: mib[4] = NET_RT_TABLE;
790: mib[5] = (int)num;
791: if (sysctl(mib, 6, &info, &miblen, NULL, 0) == -1)
792: return 0;
793:
794: return 1;
1.29 markus 795: }
796:
1.266 dtucker 797: /*
798: * Queue a ListenAddress to be processed once we have all of the Ports
799: * and AddressFamily options.
800: */
801: static void
1.315 djm 802: queue_listen_addr(ServerOptions *options, const char *addr,
803: const char *rdomain, int port)
1.266 dtucker 804: {
1.315 djm 805: struct queued_listenaddr *qla;
806:
807: options->queued_listen_addrs = xrecallocarray(
808: options->queued_listen_addrs,
809: options->num_queued_listens, options->num_queued_listens + 1,
810: sizeof(*options->queued_listen_addrs));
811: qla = &options->queued_listen_addrs[options->num_queued_listens++];
812: qla->addr = xstrdup(addr);
813: qla->port = port;
814: qla->rdomain = rdomain == NULL ? NULL : xstrdup(rdomain);
1.266 dtucker 815: }
816:
817: /*
818: * Process queued (text) ListenAddress entries.
819: */
820: static void
821: process_queued_listen_addrs(ServerOptions *options)
822: {
823: u_int i;
1.315 djm 824: struct queued_listenaddr *qla;
1.266 dtucker 825:
826: if (options->num_ports == 0)
827: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
828: if (options->address_family == -1)
829: options->address_family = AF_UNSPEC;
830:
831: for (i = 0; i < options->num_queued_listens; i++) {
1.315 djm 832: qla = &options->queued_listen_addrs[i];
833: add_listen_addr(options, qla->addr, qla->rdomain, qla->port);
834: free(qla->addr);
835: free(qla->rdomain);
1.266 dtucker 836: }
837: free(options->queued_listen_addrs);
838: options->queued_listen_addrs = NULL;
839: options->num_queued_listens = 0;
840: }
841:
1.310 djm 842: /*
1.329 djm 843: * Inform channels layer of permitopen options for a single forwarding
844: * direction (local/remote).
1.310 djm 845: */
1.329 djm 846: static void
847: process_permitopen_list(struct ssh *ssh, ServerOpCodes opcode,
848: char **opens, u_int num_opens)
1.310 djm 849: {
850: u_int i;
851: int port;
1.383 dtucker 852: char *host, *arg, *oarg;
1.329 djm 853: int where = opcode == sPermitOpen ? FORWARD_LOCAL : FORWARD_REMOTE;
854: const char *what = lookup_opcode_name(opcode);
1.310 djm 855:
1.329 djm 856: channel_clear_permission(ssh, FORWARD_ADM, where);
857: if (num_opens == 0)
1.310 djm 858: return; /* permit any */
859:
860: /* handle keywords: "any" / "none" */
1.329 djm 861: if (num_opens == 1 && strcmp(opens[0], "any") == 0)
1.310 djm 862: return;
1.329 djm 863: if (num_opens == 1 && strcmp(opens[0], "none") == 0) {
864: channel_disable_admin(ssh, where);
1.310 djm 865: return;
866: }
867: /* Otherwise treat it as a list of permitted host:port */
1.329 djm 868: for (i = 0; i < num_opens; i++) {
869: oarg = arg = xstrdup(opens[i]);
1.383 dtucker 870: host = hpdelim(&arg);
871: if (host == NULL)
1.371 djm 872: fatal_f("missing host in %s", what);
1.310 djm 873: host = cleanhostname(host);
874: if (arg == NULL || ((port = permitopen_port(arg)) < 0))
1.371 djm 875: fatal_f("bad port number in %s", what);
1.310 djm 876: /* Send it to channels layer */
1.329 djm 877: channel_add_permission(ssh, FORWARD_ADM,
878: where, host, port);
1.310 djm 879: free(oarg);
880: }
881: }
882:
1.329 djm 883: /*
884: * Inform channels layer of permitopen options from configuration.
885: */
886: void
887: process_permitopen(struct ssh *ssh, ServerOptions *options)
888: {
889: process_permitopen_list(ssh, sPermitOpen,
890: options->permitted_opens, options->num_permitted_opens);
1.330 djm 891: process_permitopen_list(ssh, sPermitListen,
892: options->permitted_listens,
893: options->num_permitted_listens);
1.329 djm 894: }
895:
1.226 dtucker 896: struct connection_info *
1.346 djm 897: get_connection_info(struct ssh *ssh, int populate, int use_dns)
1.226 dtucker 898: {
899: static struct connection_info ci;
900:
1.346 djm 901: if (ssh == NULL || !populate)
1.226 dtucker 902: return &ci;
1.286 djm 903: ci.host = auth_get_canonical_hostname(ssh, use_dns);
904: ci.address = ssh_remote_ipaddr(ssh);
905: ci.laddress = ssh_local_ipaddr(ssh);
906: ci.lport = ssh_local_port(ssh);
1.317 djm 907: ci.rdomain = ssh_packet_rdomain_in(ssh);
1.226 dtucker 908: return &ci;
909: }
910:
1.153 dtucker 911: /*
912: * The strategy for the Match blocks is that the config file is parsed twice.
913: *
914: * The first time is at startup. activep is initialized to 1 and the
915: * directives in the global context are processed and acted on. Hitting a
916: * Match directive unsets activep and the directives inside the block are
917: * checked for syntax only.
918: *
919: * The second time is after a connection has been established but before
920: * authentication. activep is initialized to 2 and global config directives
921: * are ignored since they have already been processed. If the criteria in a
922: * Match block is met, activep is set and the subsequent directives
923: * processed and actioned until EOF or another Match block unsets it. Any
924: * options set are copied into the main server config.
925: *
926: * Potential additions/improvements:
1.295 djm 927: * - Add Match support for pre-kex directives, eg. Ciphers.
1.153 dtucker 928: *
929: * - Add a Tag directive (idea from David Leonard) ala pf, eg:
930: * Match Address 192.168.0.*
931: * Tag trusted
932: * Match Group wheel
933: * Tag trusted
934: * Match Tag trusted
935: * AllowTcpForwarding yes
936: * GatewayPorts clientspecified
937: * [...]
938: *
939: * - Add a PermittedChannelRequests directive
940: * Match Group shell
941: * PermittedChannelRequests session,forwarded-tcpip
942: */
943:
944: static int
1.165 dtucker 945: match_cfg_line_group(const char *grps, int line, const char *user)
946: {
947: int result = 0;
948: struct passwd *pw;
949:
950: if (user == NULL)
951: goto out;
952:
953: if ((pw = getpwnam(user)) == NULL) {
954: debug("Can't match group at line %d because user %.100s does "
955: "not exist", line, user);
956: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
957: debug("Can't Match group because user %.100s not in any group "
958: "at line %d", user, line);
1.186 djm 959: } else if (ga_match_pattern_list(grps) != 1) {
960: debug("user %.100s does not match group list %.100s at line %d",
961: user, grps, line);
1.165 dtucker 962: } else {
1.186 djm 963: debug("user %.100s matched group list %.100s at line %d", user,
964: grps, line);
1.165 dtucker 965: result = 1;
966: }
967: out:
968: ga_free();
969: return result;
970: }
971:
1.319 dtucker 972: static void
973: match_test_missing_fatal(const char *criteria, const char *attrib)
974: {
975: fatal("'Match %s' in configuration but '%s' not in connection "
976: "test specification.", criteria, attrib);
977: }
978:
1.226 dtucker 979: /*
1.230 dtucker 980: * All of the attributes on a single Match line are ANDed together, so we need
1.242 dtucker 981: * to check every attribute and set the result to zero if any attribute does
1.230 dtucker 982: * not match.
1.226 dtucker 983: */
1.165 dtucker 984: static int
1.226 dtucker 985: match_cfg_line(char **condition, int line, struct connection_info *ci)
1.153 dtucker 986: {
1.243 dtucker 987: int result = 1, attributes = 0, port;
1.153 dtucker 988: char *arg, *attrib, *cp = *condition;
989:
1.226 dtucker 990: if (ci == NULL)
1.153 dtucker 991: debug3("checking syntax for 'Match %s'", cp);
992: else
1.226 dtucker 993: debug3("checking match for '%s' user %s host %s addr %s "
994: "laddr %s lport %d", cp, ci->user ? ci->user : "(null)",
995: ci->host ? ci->host : "(null)",
996: ci->address ? ci->address : "(null)",
997: ci->laddress ? ci->laddress : "(null)", ci->lport);
1.153 dtucker 998:
999: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
1.380 djm 1000: /* Terminate on comment */
1001: if (*attrib == '#') {
1002: cp = NULL; /* mark all arguments consumed */
1003: break;
1004: }
1005: arg = NULL;
1.243 dtucker 1006: attributes++;
1.380 djm 1007: /* Criterion "all" has no argument and must appear alone */
1.243 dtucker 1008: if (strcasecmp(attrib, "all") == 0) {
1.380 djm 1009: if (attributes > 1 || ((arg = strdelim(&cp)) != NULL &&
1010: *arg != '\0' && *arg != '#')) {
1.243 dtucker 1011: error("'all' cannot be combined with other "
1012: "Match attributes");
1013: return -1;
1014: }
1.380 djm 1015: if (arg != NULL && *arg == '#')
1016: cp = NULL; /* mark all arguments consumed */
1.243 dtucker 1017: *condition = cp;
1018: return 1;
1019: }
1.380 djm 1020: /* All other criteria require an argument */
1021: if ((arg = strdelim(&cp)) == NULL ||
1022: *arg == '\0' || *arg == '#') {
1.153 dtucker 1023: error("Missing Match criteria for %s", attrib);
1024: return -1;
1025: }
1026: if (strcasecmp(attrib, "user") == 0) {
1.351 dtucker 1027: if (ci == NULL || (ci->test && ci->user == NULL)) {
1.153 dtucker 1028: result = 0;
1029: continue;
1030: }
1.319 dtucker 1031: if (ci->user == NULL)
1032: match_test_missing_fatal("User", "user");
1.349 dtucker 1033: if (match_usergroup_pattern_list(ci->user, arg) != 1)
1.153 dtucker 1034: result = 0;
1035: else
1036: debug("user %.100s matched 'User %.100s' at "
1.226 dtucker 1037: "line %d", ci->user, arg, line);
1.165 dtucker 1038: } else if (strcasecmp(attrib, "group") == 0) {
1.351 dtucker 1039: if (ci == NULL || (ci->test && ci->user == NULL)) {
1.226 dtucker 1040: result = 0;
1041: continue;
1042: }
1.319 dtucker 1043: if (ci->user == NULL)
1044: match_test_missing_fatal("Group", "user");
1.226 dtucker 1045: switch (match_cfg_line_group(arg, line, ci->user)) {
1.165 dtucker 1046: case -1:
1047: return -1;
1048: case 0:
1049: result = 0;
1050: }
1.153 dtucker 1051: } else if (strcasecmp(attrib, "host") == 0) {
1.351 dtucker 1052: if (ci == NULL || (ci->test && ci->host == NULL)) {
1.153 dtucker 1053: result = 0;
1054: continue;
1055: }
1.319 dtucker 1056: if (ci->host == NULL)
1057: match_test_missing_fatal("Host", "host");
1.269 djm 1058: if (match_hostname(ci->host, arg) != 1)
1.153 dtucker 1059: result = 0;
1060: else
1061: debug("connection from %.100s matched 'Host "
1.226 dtucker 1062: "%.100s' at line %d", ci->host, arg, line);
1.153 dtucker 1063: } else if (strcasecmp(attrib, "address") == 0) {
1.351 dtucker 1064: if (ci == NULL || (ci->test && ci->address == NULL)) {
1.369 dtucker 1065: if (addr_match_list(NULL, arg) != 0)
1066: fatal("Invalid Match address argument "
1067: "'%s' at line %d", arg, line);
1.226 dtucker 1068: result = 0;
1069: continue;
1070: }
1.319 dtucker 1071: if (ci->address == NULL)
1072: match_test_missing_fatal("Address", "addr");
1.226 dtucker 1073: switch (addr_match_list(ci->address, arg)) {
1.181 djm 1074: case 1:
1075: debug("connection from %.100s matched 'Address "
1.226 dtucker 1076: "%.100s' at line %d", ci->address, arg, line);
1.181 djm 1077: break;
1078: case 0:
1.183 djm 1079: case -1:
1.153 dtucker 1080: result = 0;
1.181 djm 1081: break;
1.183 djm 1082: case -2:
1.181 djm 1083: return -1;
1.153 dtucker 1084: }
1.226 dtucker 1085: } else if (strcasecmp(attrib, "localaddress") == 0){
1.351 dtucker 1086: if (ci == NULL || (ci->test && ci->laddress == NULL)) {
1.369 dtucker 1087: if (addr_match_list(NULL, arg) != 0)
1088: fatal("Invalid Match localaddress "
1089: "argument '%s' at line %d", arg,
1090: line);
1.226 dtucker 1091: result = 0;
1092: continue;
1093: }
1.319 dtucker 1094: if (ci->laddress == NULL)
1095: match_test_missing_fatal("LocalAddress",
1096: "laddr");
1.226 dtucker 1097: switch (addr_match_list(ci->laddress, arg)) {
1098: case 1:
1099: debug("connection from %.100s matched "
1100: "'LocalAddress %.100s' at line %d",
1101: ci->laddress, arg, line);
1102: break;
1103: case 0:
1104: case -1:
1105: result = 0;
1106: break;
1107: case -2:
1108: return -1;
1109: }
1110: } else if (strcasecmp(attrib, "localport") == 0) {
1111: if ((port = a2port(arg)) == -1) {
1112: error("Invalid LocalPort '%s' on Match line",
1113: arg);
1114: return -1;
1115: }
1.351 dtucker 1116: if (ci == NULL || (ci->test && ci->lport == -1)) {
1.226 dtucker 1117: result = 0;
1118: continue;
1119: }
1.319 dtucker 1120: if (ci->lport == 0)
1121: match_test_missing_fatal("LocalPort", "lport");
1.226 dtucker 1122: /* TODO support port lists */
1123: if (port == ci->lport)
1124: debug("connection from %.100s matched "
1125: "'LocalPort %d' at line %d",
1126: ci->laddress, port, line);
1127: else
1128: result = 0;
1.317 djm 1129: } else if (strcasecmp(attrib, "rdomain") == 0) {
1.351 dtucker 1130: if (ci == NULL || (ci->test && ci->rdomain == NULL)) {
1.317 djm 1131: result = 0;
1132: continue;
1133: }
1.351 dtucker 1134: if (ci->rdomain == NULL)
1135: match_test_missing_fatal("RDomain", "rdomain");
1.317 djm 1136: if (match_pattern_list(ci->rdomain, arg, 0) != 1)
1137: result = 0;
1138: else
1139: debug("user %.100s matched 'RDomain %.100s' at "
1140: "line %d", ci->rdomain, arg, line);
1.153 dtucker 1141: } else {
1142: error("Unsupported Match attribute %s", attrib);
1143: return -1;
1144: }
1.243 dtucker 1145: }
1146: if (attributes == 0) {
1147: error("One or more attributes required for Match");
1148: return -1;
1.153 dtucker 1149: }
1.226 dtucker 1150: if (ci != NULL)
1.153 dtucker 1151: debug3("match %sfound", result ? "" : "not ");
1152: *condition = cp;
1153: return result;
1154: }
1155:
1.158 dtucker 1156: #define WHITESPACE " \t\r\n"
1157:
1.220 djm 1158: /* Multistate option parsing */
1159: struct multistate {
1160: char *key;
1161: int value;
1162: };
1.320 djm 1163: static const struct multistate multistate_flag[] = {
1164: { "yes", 1 },
1165: { "no", 0 },
1166: { NULL, -1 }
1167: };
1.363 djm 1168: static const struct multistate multistate_ignore_rhosts[] = {
1169: { "yes", IGNORE_RHOSTS_YES },
1170: { "no", IGNORE_RHOSTS_NO },
1171: { "shosts-only", IGNORE_RHOSTS_SHOSTS },
1172: { NULL, -1 }
1173: };
1.220 djm 1174: static const struct multistate multistate_addressfamily[] = {
1175: { "inet", AF_INET },
1176: { "inet6", AF_INET6 },
1177: { "any", AF_UNSPEC },
1178: { NULL, -1 }
1179: };
1180: static const struct multistate multistate_permitrootlogin[] = {
1181: { "without-password", PERMIT_NO_PASSWD },
1.280 deraadt 1182: { "prohibit-password", PERMIT_NO_PASSWD },
1.220 djm 1183: { "forced-commands-only", PERMIT_FORCED_ONLY },
1184: { "yes", PERMIT_YES },
1185: { "no", PERMIT_NO },
1186: { NULL, -1 }
1187: };
1188: static const struct multistate multistate_compression[] = {
1.359 dtucker 1189: #ifdef WITH_ZLIB
1.337 sf 1190: { "yes", COMP_DELAYED },
1191: { "delayed", COMP_DELAYED },
1.359 dtucker 1192: #endif
1.220 djm 1193: { "no", COMP_NONE },
1194: { NULL, -1 }
1195: };
1196: static const struct multistate multistate_gatewayports[] = {
1197: { "clientspecified", 2 },
1198: { "yes", 1 },
1199: { "no", 0 },
1.222 djm 1200: { NULL, -1 }
1201: };
1.233 djm 1202: static const struct multistate multistate_tcpfwd[] = {
1203: { "yes", FORWARD_ALLOW },
1204: { "all", FORWARD_ALLOW },
1205: { "no", FORWARD_DENY },
1206: { "remote", FORWARD_REMOTE },
1207: { "local", FORWARD_LOCAL },
1208: { NULL, -1 }
1209: };
1.220 djm 1210:
1.360 djm 1211: static int
1212: process_server_config_line_depth(ServerOptions *options, char *line,
1.226 dtucker 1213: const char *filename, int linenum, int *activep,
1.365 djm 1214: struct connection_info *connectinfo, int *inc_flags, int depth,
1.360 djm 1215: struct include_list *includes)
1.1 deraadt 1216: {
1.383 dtucker 1217: char *str, ***chararrayptr, **charptr, *arg, *arg2, *p, *keyword;
1.360 djm 1218: int cmdline = 0, *intptr, value, value2, n, port, oactive, r, found;
1.174 dtucker 1219: SyslogFacility *log_facility_ptr;
1220: LogLevel *log_level_ptr;
1.25 markus 1221: ServerOpCodes opcode;
1.329 djm 1222: u_int i, *uintptr, uvalue, flags = 0;
1.151 djm 1223: size_t len;
1.237 dtucker 1224: long long val64;
1.220 djm 1225: const struct multistate *multistate_ptr;
1.322 dtucker 1226: const char *errstr;
1.360 djm 1227: struct include_item *item;
1228: glob_t gbuf;
1.380 djm 1229: char **oav = NULL, **av;
1230: int oac = 0, ac;
1231: int ret = -1;
1.303 djm 1232:
1233: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1234: if ((len = strlen(line)) == 0)
1235: return 0;
1236: for (len--; len > 0; len--) {
1237: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1238: break;
1239: line[len] = '\0';
1240: }
1.25 markus 1241:
1.380 djm 1242: str = line;
1243: if ((keyword = strdelim(&str)) == NULL)
1.147 djm 1244: return 0;
1.94 markus 1245: /* Ignore leading whitespace */
1.380 djm 1246: if (*keyword == '\0')
1247: keyword = strdelim(&str);
1248: if (!keyword || !*keyword || *keyword == '#')
1.94 markus 1249: return 0;
1.380 djm 1250: if (str == NULL || *str == '\0') {
1251: error("%s line %d: no argument after keyword \"%s\"",
1252: filename, linenum, keyword);
1253: return -1;
1254: }
1.94 markus 1255: intptr = NULL;
1256: charptr = NULL;
1.380 djm 1257: opcode = parse_token(keyword, filename, linenum, &flags);
1258:
1259: if (argv_split(str, &oac, &oav, 1) != 0) {
1260: error("%s line %d: invalid quotes", filename, linenum);
1261: return -1;
1262: }
1263: ac = oac;
1264: av = oav;
1.153 dtucker 1265:
1266: if (activep == NULL) { /* We are processing a command line directive */
1267: cmdline = 1;
1268: activep = &cmdline;
1269: }
1.360 djm 1270: if (*activep && opcode != sMatch && opcode != sInclude)
1.380 djm 1271: debug3("%s:%d setting %s %s", filename, linenum, keyword, str);
1.153 dtucker 1272: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
1.226 dtucker 1273: if (connectinfo == NULL) {
1.153 dtucker 1274: fatal("%s line %d: Directive '%s' is not allowed "
1.380 djm 1275: "within a Match block", filename, linenum, keyword);
1.153 dtucker 1276: } else { /* this is a directive we have already processed */
1.380 djm 1277: ret = 0;
1278: goto out;
1.153 dtucker 1279: }
1280: }
1281:
1.94 markus 1282: switch (opcode) {
1283: case sBadOption:
1.380 djm 1284: goto out;
1.94 markus 1285: case sPort:
1286: /* ignore ports from configfile if cmdline specifies ports */
1.380 djm 1287: if (options->ports_from_cmdline) {
1288: argv_consume(&ac);
1289: break;
1290: }
1.94 markus 1291: if (options->num_ports >= MAX_PORTS)
1292: fatal("%s line %d: too many ports.",
1293: filename, linenum);
1.380 djm 1294: arg = argv_next(&ac, &av);
1.94 markus 1295: if (!arg || *arg == '\0')
1296: fatal("%s line %d: missing port number.",
1297: filename, linenum);
1298: options->ports[options->num_ports++] = a2port(arg);
1.194 djm 1299: if (options->ports[options->num_ports-1] <= 0)
1.94 markus 1300: fatal("%s line %d: Badly formatted port number.",
1301: filename, linenum);
1302: break;
1.29 markus 1303:
1.94 markus 1304: case sLoginGraceTime:
1305: intptr = &options->login_grace_time;
1.180 djm 1306: parse_time:
1.380 djm 1307: arg = argv_next(&ac, &av);
1.94 markus 1308: if (!arg || *arg == '\0')
1309: fatal("%s line %d: missing time value.",
1310: filename, linenum);
1311: if ((value = convtime(arg)) == -1)
1312: fatal("%s line %d: invalid time value.",
1313: filename, linenum);
1.268 djm 1314: if (*activep && *intptr == -1)
1.94 markus 1315: *intptr = value;
1316: break;
1317:
1318: case sListenAddress:
1.380 djm 1319: arg = argv_next(&ac, &av);
1.139 djm 1320: if (arg == NULL || *arg == '\0')
1321: fatal("%s line %d: missing address",
1.94 markus 1322: filename, linenum);
1.144 dtucker 1323: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
1324: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
1325: && strchr(p+1, ':') != NULL) {
1.315 djm 1326: port = 0;
1327: p = arg;
1328: } else {
1.347 dtucker 1329: arg2 = NULL;
1.383 dtucker 1330: p = hpdelim(&arg);
1331: if (p == NULL)
1.315 djm 1332: fatal("%s line %d: bad address:port usage",
1333: filename, linenum);
1334: p = cleanhostname(p);
1335: if (arg == NULL)
1336: port = 0;
1337: else if ((port = a2port(arg)) <= 0)
1338: fatal("%s line %d: bad port number",
1339: filename, linenum);
1340: }
1341: /* Optional routing table */
1342: arg2 = NULL;
1.380 djm 1343: if ((arg = argv_next(&ac, &av)) != NULL) {
1.315 djm 1344: if (strcmp(arg, "rdomain") != 0 ||
1.380 djm 1345: (arg2 = argv_next(&ac, &av)) == NULL)
1.315 djm 1346: fatal("%s line %d: bad ListenAddress syntax",
1347: filename, linenum);
1348: if (!valid_rdomain(arg2))
1349: fatal("%s line %d: bad routing domain",
1350: filename, linenum);
1.144 dtucker 1351: }
1.315 djm 1352: queue_listen_addr(options, p, arg2, port);
1.25 markus 1353:
1.138 djm 1354: break;
1355:
1356: case sAddressFamily:
1.220 djm 1357: intptr = &options->address_family;
1358: multistate_ptr = multistate_addressfamily;
1359: parse_multistate:
1.380 djm 1360: arg = argv_next(&ac, &av);
1.141 markus 1361: if (!arg || *arg == '\0')
1.220 djm 1362: fatal("%s line %d: missing argument.",
1.141 markus 1363: filename, linenum);
1.220 djm 1364: value = -1;
1365: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1366: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1367: value = multistate_ptr[i].value;
1368: break;
1369: }
1370: }
1371: if (value == -1)
1372: fatal("%s line %d: unsupported option \"%s\".",
1.138 djm 1373: filename, linenum, arg);
1.220 djm 1374: if (*activep && *intptr == -1)
1.138 djm 1375: *intptr = value;
1.94 markus 1376: break;
1377:
1378: case sHostKeyFile:
1.380 djm 1379: arg = argv_next(&ac, &av);
1.94 markus 1380: if (!arg || *arg == '\0')
1381: fatal("%s line %d: missing file name.",
1382: filename, linenum);
1.344 djm 1383: if (*activep) {
1384: servconf_add_hostkey(filename, linenum,
1385: options, arg, 1);
1386: }
1.94 markus 1387: break;
1.76 stevesk 1388:
1.240 markus 1389: case sHostKeyAgent:
1390: charptr = &options->host_key_agent;
1.380 djm 1391: arg = argv_next(&ac, &av);
1.240 markus 1392: if (!arg || *arg == '\0')
1393: fatal("%s line %d: missing socket name.",
1394: filename, linenum);
1395: if (*activep && *charptr == NULL)
1396: *charptr = !strcmp(arg, SSH_AUTHSOCKET_ENV_NAME) ?
1397: xstrdup(arg) : derelativise_path(arg);
1398: break;
1399:
1.203 djm 1400: case sHostCertificate:
1.380 djm 1401: arg = argv_next(&ac, &av);
1.314 djm 1402: if (!arg || *arg == '\0')
1403: fatal("%s line %d: missing file name.",
1404: filename, linenum);
1405: if (*activep)
1406: servconf_add_hostcert(filename, linenum, options, arg);
1407: break;
1.203 djm 1408:
1.94 markus 1409: case sPidFile:
1410: charptr = &options->pid_file;
1.314 djm 1411: parse_filename:
1.380 djm 1412: arg = argv_next(&ac, &av);
1.314 djm 1413: if (!arg || *arg == '\0')
1414: fatal("%s line %d: missing file name.",
1415: filename, linenum);
1416: if (*activep && *charptr == NULL) {
1417: *charptr = derelativise_path(arg);
1418: /* increase optional counter */
1419: if (intptr != NULL)
1420: *intptr = *intptr + 1;
1421: }
1422: break;
1.25 markus 1423:
1.378 dtucker 1424: case sModuliFile:
1425: charptr = &options->moduli_file;
1426: goto parse_filename;
1427:
1.94 markus 1428: case sPermitRootLogin:
1429: intptr = &options->permit_root_login;
1.220 djm 1430: multistate_ptr = multistate_permitrootlogin;
1431: goto parse_multistate;
1.36 markus 1432:
1.94 markus 1433: case sIgnoreRhosts:
1434: intptr = &options->ignore_rhosts;
1.363 djm 1435: multistate_ptr = multistate_ignore_rhosts;
1.320 djm 1436: goto parse_multistate;
1.94 markus 1437:
1438: case sIgnoreUserKnownHosts:
1439: intptr = &options->ignore_user_known_hosts;
1.363 djm 1440: parse_flag:
1441: multistate_ptr = multistate_flag;
1442: goto parse_multistate;
1.94 markus 1443:
1444: case sHostbasedAuthentication:
1445: intptr = &options->hostbased_authentication;
1446: goto parse_flag;
1447:
1448: case sHostbasedUsesNameFromPacketOnly:
1449: intptr = &options->hostbased_uses_name_from_packet_only;
1450: goto parse_flag;
1451:
1.375 dtucker 1452: case sHostbasedAcceptedAlgorithms:
1453: charptr = &options->hostbased_accepted_algos;
1.374 dtucker 1454: parse_pubkey_algos:
1.380 djm 1455: arg = argv_next(&ac, &av);
1.258 djm 1456: if (!arg || *arg == '\0')
1457: fatal("%s line %d: Missing argument.",
1458: filename, linenum);
1.304 djm 1459: if (*arg != '-' &&
1.352 naddy 1460: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1461: arg + 1 : arg, 1))
1.258 djm 1462: fatal("%s line %d: Bad key types '%s'.",
1463: filename, linenum, arg ? arg : "<NONE>");
1464: if (*activep && *charptr == NULL)
1465: *charptr = xstrdup(arg);
1466: break;
1467:
1.276 markus 1468: case sHostKeyAlgorithms:
1469: charptr = &options->hostkeyalgorithms;
1.374 dtucker 1470: goto parse_pubkey_algos;
1.276 markus 1471:
1.341 djm 1472: case sCASignatureAlgorithms:
1473: charptr = &options->ca_sign_algorithms;
1.374 dtucker 1474: goto parse_pubkey_algos;
1.341 djm 1475:
1.94 markus 1476: case sPubkeyAuthentication:
1477: intptr = &options->pubkey_authentication;
1478: goto parse_flag;
1.119 jakob 1479:
1.374 dtucker 1480: case sPubkeyAcceptedAlgorithms:
1481: charptr = &options->pubkey_accepted_algos;
1482: goto parse_pubkey_algos;
1.258 djm 1483:
1.354 djm 1484: case sPubkeyAuthOptions:
1485: intptr = &options->pubkey_auth_options;
1486: value = 0;
1.380 djm 1487: while ((arg = argv_next(&ac, &av)) != NULL) {
1.354 djm 1488: if (strcasecmp(arg, "none") == 0)
1489: continue;
1490: if (strcasecmp(arg, "touch-required") == 0)
1491: value |= PUBKEYAUTH_TOUCH_REQUIRED;
1.368 djm 1492: else if (strcasecmp(arg, "verify-required") == 0)
1493: value |= PUBKEYAUTH_VERIFY_REQUIRED;
1.354 djm 1494: else {
1.380 djm 1495: error("%s line %d: unsupported %s option %s",
1496: filename, linenum, keyword, arg);
1497: goto out;
1.354 djm 1498: }
1499: }
1500: if (*activep && *intptr == -1)
1501: *intptr = value;
1502: break;
1503:
1.94 markus 1504: case sKerberosAuthentication:
1505: intptr = &options->kerberos_authentication;
1506: goto parse_flag;
1507:
1508: case sKerberosOrLocalPasswd:
1509: intptr = &options->kerberos_or_local_passwd;
1510: goto parse_flag;
1511:
1512: case sKerberosTicketCleanup:
1513: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 1514: goto parse_flag;
1515:
1516: case sKerberosGetAFSToken:
1517: intptr = &options->kerberos_get_afs_token;
1.125 markus 1518: goto parse_flag;
1519:
1520: case sGssAuthentication:
1521: intptr = &options->gss_authentication;
1522: goto parse_flag;
1523:
1524: case sGssCleanupCreds:
1525: intptr = &options->gss_cleanup_creds;
1.271 djm 1526: goto parse_flag;
1527:
1528: case sGssStrictAcceptor:
1529: intptr = &options->gss_strict_acceptor;
1.94 markus 1530: goto parse_flag;
1531:
1532: case sPasswordAuthentication:
1533: intptr = &options->password_authentication;
1534: goto parse_flag;
1535:
1536: case sKbdInteractiveAuthentication:
1537: intptr = &options->kbd_interactive_authentication;
1538: goto parse_flag;
1539:
1540: case sPrintMotd:
1541: intptr = &options->print_motd;
1542: goto parse_flag;
1543:
1544: case sPrintLastLog:
1545: intptr = &options->print_lastlog;
1546: goto parse_flag;
1547:
1548: case sX11Forwarding:
1549: intptr = &options->x11_forwarding;
1550: goto parse_flag;
1551:
1552: case sX11DisplayOffset:
1553: intptr = &options->x11_display_offset;
1.293 naddy 1554: parse_int:
1.380 djm 1555: arg = argv_next(&ac, &av);
1.322 dtucker 1556: if ((errstr = atoi_err(arg, &value)) != NULL)
1.380 djm 1557: fatal("%s line %d: %s integer value %s.",
1558: filename, linenum, keyword, errstr);
1.293 naddy 1559: if (*activep && *intptr == -1)
1560: *intptr = value;
1561: break;
1.99 stevesk 1562:
1563: case sX11UseLocalhost:
1564: intptr = &options->x11_use_localhost;
1565: goto parse_flag;
1.94 markus 1566:
1567: case sXAuthLocation:
1568: charptr = &options->xauth_location;
1569: goto parse_filename;
1570:
1.244 djm 1571: case sPermitTTY:
1572: intptr = &options->permit_tty;
1573: goto parse_flag;
1574:
1.250 djm 1575: case sPermitUserRC:
1576: intptr = &options->permit_user_rc;
1577: goto parse_flag;
1578:
1.94 markus 1579: case sStrictModes:
1580: intptr = &options->strict_modes;
1581: goto parse_flag;
1582:
1.129 markus 1583: case sTCPKeepAlive:
1584: intptr = &options->tcp_keep_alive;
1.94 markus 1585: goto parse_flag;
1586:
1587: case sEmptyPasswd:
1588: intptr = &options->permit_empty_passwd;
1.113 markus 1589: goto parse_flag;
1590:
1591: case sPermitUserEnvironment:
1592: intptr = &options->permit_user_env;
1.367 djm 1593: charptr = &options->permit_user_env_allowlist;
1.380 djm 1594: arg = argv_next(&ac, &av);
1.334 djm 1595: if (!arg || *arg == '\0')
1.380 djm 1596: fatal("%s line %d: %s missing argument.",
1597: filename, linenum, keyword);
1.334 djm 1598: value = 0;
1599: p = NULL;
1600: if (strcmp(arg, "yes") == 0)
1601: value = 1;
1602: else if (strcmp(arg, "no") == 0)
1603: value = 0;
1604: else {
1605: /* Pattern-list specified */
1606: value = 1;
1607: p = xstrdup(arg);
1608: }
1609: if (*activep && *intptr == -1) {
1610: *intptr = value;
1611: *charptr = p;
1612: p = NULL;
1613: }
1614: free(p);
1615: break;
1.94 markus 1616:
1.111 markus 1617: case sCompression:
1618: intptr = &options->compression;
1.220 djm 1619: multistate_ptr = multistate_compression;
1620: goto parse_multistate;
1.94 markus 1621:
1.235 dtucker 1622: case sRekeyLimit:
1.380 djm 1623: arg = argv_next(&ac, &av);
1.235 dtucker 1624: if (!arg || *arg == '\0')
1.380 djm 1625: fatal("%s line %d: %s missing argument.",
1626: filename, linenum, keyword);
1.235 dtucker 1627: if (strcmp(arg, "default") == 0) {
1628: val64 = 0;
1629: } else {
1.236 dtucker 1630: if (scan_scaled(arg, &val64) == -1)
1.380 djm 1631: fatal("%.200s line %d: Bad %s number '%s': %s",
1632: filename, linenum, keyword,
1633: arg, strerror(errno));
1.235 dtucker 1634: if (val64 != 0 && val64 < 16)
1.380 djm 1635: fatal("%.200s line %d: %s too small",
1636: filename, linenum, keyword);
1.235 dtucker 1637: }
1638: if (*activep && options->rekey_limit == -1)
1.284 dtucker 1639: options->rekey_limit = val64;
1.380 djm 1640: if (ac != 0) { /* optional rekey interval present */
1641: if (strcmp(av[0], "none") == 0) {
1642: (void)argv_next(&ac, &av); /* discard */
1.235 dtucker 1643: break;
1644: }
1645: intptr = &options->rekey_interval;
1646: goto parse_time;
1647: }
1648: break;
1649:
1.94 markus 1650: case sGatewayPorts:
1.251 millert 1651: intptr = &options->fwd_opts.gateway_ports;
1.220 djm 1652: multistate_ptr = multistate_gatewayports;
1653: goto parse_multistate;
1.25 markus 1654:
1.122 markus 1655: case sUseDNS:
1656: intptr = &options->use_dns;
1.94 markus 1657: goto parse_flag;
1.53 markus 1658:
1.94 markus 1659: case sLogFacility:
1.174 dtucker 1660: log_facility_ptr = &options->log_facility;
1.380 djm 1661: arg = argv_next(&ac, &av);
1.94 markus 1662: value = log_facility_number(arg);
1.101 markus 1663: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 1664: fatal("%.200s line %d: unsupported log facility '%s'",
1665: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1666: if (*log_facility_ptr == -1)
1667: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 1668: break;
1.25 markus 1669:
1.94 markus 1670: case sLogLevel:
1.174 dtucker 1671: log_level_ptr = &options->log_level;
1.380 djm 1672: arg = argv_next(&ac, &av);
1.94 markus 1673: value = log_level_number(arg);
1.101 markus 1674: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 1675: fatal("%.200s line %d: unsupported log level '%s'",
1676: filename, linenum, arg ? arg : "<NONE>");
1.308 djm 1677: if (*activep && *log_level_ptr == -1)
1.174 dtucker 1678: *log_level_ptr = (LogLevel) value;
1.94 markus 1679: break;
1680:
1.370 djm 1681: case sLogVerbose:
1.380 djm 1682: found = options->num_log_verbose == 0;
1683: i = 0;
1684: while ((arg = argv_next(&ac, &av)) != NULL) {
1685: if (*arg == '\0') {
1686: error("%s line %d: keyword %s empty argument",
1687: filename, linenum, keyword);
1688: goto out;
1689: }
1690: /* Allow "none" only in first position */
1691: if (strcasecmp(arg, "none") == 0) {
1692: if (i > 0 || ac > 0) {
1693: error("%s line %d: keyword %s \"none\" "
1694: "argument must appear alone.",
1695: filename, linenum, keyword);
1696: goto out;
1697: }
1698: }
1699: i++;
1700: if (!found || !*activep)
1.370 djm 1701: continue;
1.380 djm 1702: opt_array_append(filename, linenum, keyword,
1.370 djm 1703: &options->log_verbose, &options->num_log_verbose,
1704: arg);
1705: }
1706: break;
1707:
1.94 markus 1708: case sAllowTcpForwarding:
1709: intptr = &options->allow_tcp_forwarding;
1.233 djm 1710: multistate_ptr = multistate_tcpfwd;
1711: goto parse_multistate;
1.102 provos 1712:
1.251 millert 1713: case sAllowStreamLocalForwarding:
1714: intptr = &options->allow_streamlocal_forwarding;
1715: multistate_ptr = multistate_tcpfwd;
1716: goto parse_multistate;
1717:
1.178 pyr 1718: case sAllowAgentForwarding:
1719: intptr = &options->allow_agent_forwarding;
1720: goto parse_flag;
1721:
1.301 djm 1722: case sDisableForwarding:
1723: intptr = &options->disable_forwarding;
1724: goto parse_flag;
1725:
1.94 markus 1726: case sAllowUsers:
1.380 djm 1727: chararrayptr = &options->allow_users;
1728: uintptr = &options->num_allow_users;
1729: parse_allowdenyusers:
1730: while ((arg = argv_next(&ac, &av)) != NULL) {
1731: if (*arg == '\0' ||
1732: match_user(NULL, NULL, NULL, arg) == -1)
1733: fatal("%s line %d: invalid %s pattern: \"%s\"",
1734: filename, linenum, keyword, arg);
1.227 markus 1735: if (!*activep)
1736: continue;
1.380 djm 1737: opt_array_append(filename, linenum, keyword,
1738: chararrayptr, uintptr, arg);
1.94 markus 1739: }
1740: break;
1.25 markus 1741:
1.94 markus 1742: case sDenyUsers:
1.380 djm 1743: chararrayptr = &options->deny_users;
1744: uintptr = &options->num_deny_users;
1745: goto parse_allowdenyusers;
1.25 markus 1746:
1.94 markus 1747: case sAllowGroups:
1.380 djm 1748: chararrayptr = &options->allow_groups;
1749: uintptr = &options->num_allow_groups;
1750: parse_allowdenygroups:
1751: while ((arg = argv_next(&ac, &av)) != NULL) {
1752: if (*arg == '\0')
1753: fatal("%s line %d: empty %s pattern",
1754: filename, linenum, keyword);
1.227 markus 1755: if (!*activep)
1756: continue;
1.380 djm 1757: opt_array_append(filename, linenum, keyword,
1758: chararrayptr, uintptr, arg);
1.94 markus 1759: }
1760: break;
1.33 markus 1761:
1.94 markus 1762: case sDenyGroups:
1.380 djm 1763: chararrayptr = &options->deny_groups;
1764: uintptr = &options->num_deny_groups;
1765: goto parse_allowdenygroups;
1.66 markus 1766:
1.94 markus 1767: case sCiphers:
1.380 djm 1768: arg = argv_next(&ac, &av);
1.94 markus 1769: if (!arg || *arg == '\0')
1.380 djm 1770: fatal("%s line %d: %s missing argument.",
1771: filename, linenum, keyword);
1.352 naddy 1772: if (*arg != '-' &&
1773: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.94 markus 1774: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1775: filename, linenum, arg ? arg : "<NONE>");
1776: if (options->ciphers == NULL)
1777: options->ciphers = xstrdup(arg);
1778: break;
1.33 markus 1779:
1.94 markus 1780: case sMacs:
1.380 djm 1781: arg = argv_next(&ac, &av);
1.94 markus 1782: if (!arg || *arg == '\0')
1.380 djm 1783: fatal("%s line %d: %s missing argument.",
1784: filename, linenum, keyword);
1.352 naddy 1785: if (*arg != '-' &&
1786: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.94 markus 1787: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1788: filename, linenum, arg ? arg : "<NONE>");
1789: if (options->macs == NULL)
1790: options->macs = xstrdup(arg);
1.211 djm 1791: break;
1792:
1793: case sKexAlgorithms:
1.380 djm 1794: arg = argv_next(&ac, &av);
1.211 djm 1795: if (!arg || *arg == '\0')
1.380 djm 1796: fatal("%s line %d: %s missing argument.",
1797: filename, linenum, keyword);
1.304 djm 1798: if (*arg != '-' &&
1.352 naddy 1799: !kex_names_valid(*arg == '+' || *arg == '^' ?
1800: arg + 1 : arg))
1.211 djm 1801: fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
1802: filename, linenum, arg ? arg : "<NONE>");
1803: if (options->kex_algorithms == NULL)
1804: options->kex_algorithms = xstrdup(arg);
1.94 markus 1805: break;
1.43 jakob 1806:
1.94 markus 1807: case sSubsystem:
1808: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1809: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1810: filename, linenum);
1.94 markus 1811: }
1.380 djm 1812: arg = argv_next(&ac, &av);
1.94 markus 1813: if (!arg || *arg == '\0')
1.380 djm 1814: fatal("%s line %d: %s missing argument.",
1815: filename, linenum, keyword);
1.153 dtucker 1816: if (!*activep) {
1.380 djm 1817: arg = argv_next(&ac, &av);
1.153 dtucker 1818: break;
1819: }
1.94 markus 1820: for (i = 0; i < options->num_subsystems; i++)
1821: if (strcmp(arg, options->subsystem_name[i]) == 0)
1.380 djm 1822: fatal("%s line %d: Subsystem '%s' "
1823: "already defined.", filename, linenum, arg);
1.94 markus 1824: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.380 djm 1825: arg = argv_next(&ac, &av);
1.94 markus 1826: if (!arg || *arg == '\0')
1827: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1828: filename, linenum);
1.94 markus 1829: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1830:
1831: /* Collect arguments (separate to executable) */
1832: p = xstrdup(arg);
1833: len = strlen(p) + 1;
1.380 djm 1834: while ((arg = argv_next(&ac, &av)) != NULL) {
1.151 djm 1835: len += 1 + strlen(arg);
1.264 deraadt 1836: p = xreallocarray(p, 1, len);
1.151 djm 1837: strlcat(p, " ", len);
1838: strlcat(p, arg, len);
1839: }
1840: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1841: options->num_subsystems++;
1842: break;
1.46 markus 1843:
1.94 markus 1844: case sMaxStartups:
1.380 djm 1845: arg = argv_next(&ac, &av);
1.94 markus 1846: if (!arg || *arg == '\0')
1.380 djm 1847: fatal("%s line %d: %s missing argument.",
1848: filename, linenum, keyword);
1.94 markus 1849: if ((n = sscanf(arg, "%d:%d:%d",
1850: &options->max_startups_begin,
1851: &options->max_startups_rate,
1852: &options->max_startups)) == 3) {
1853: if (options->max_startups_begin >
1854: options->max_startups ||
1855: options->max_startups_rate > 100 ||
1856: options->max_startups_rate < 1)
1.380 djm 1857: fatal("%s line %d: Invalid %s spec.",
1858: filename, linenum, keyword);
1.94 markus 1859: } else if (n != 1)
1.380 djm 1860: fatal("%s line %d: Invalid %s spec.",
1861: filename, linenum, keyword);
1.94 markus 1862: else
1863: options->max_startups = options->max_startups_begin;
1.387 dtucker 1864: if (options->max_startups <= 0 ||
1865: options->max_startups_begin <= 0)
1866: fatal("%s line %d: Invalid %s spec.",
1867: filename, linenum, keyword);
1.94 markus 1868: break;
1.133 dtucker 1869:
1.372 dtucker 1870: case sPerSourceNetBlockSize:
1.380 djm 1871: arg = argv_next(&ac, &av);
1.372 dtucker 1872: if (!arg || *arg == '\0')
1.380 djm 1873: fatal("%s line %d: %s missing argument.",
1874: filename, linenum, keyword);
1.372 dtucker 1875: switch (n = sscanf(arg, "%d:%d", &value, &value2)) {
1876: case 2:
1877: if (value2 < 0 || value2 > 128)
1878: n = -1;
1879: /* FALLTHROUGH */
1880: case 1:
1881: if (value < 0 || value > 32)
1882: n = -1;
1883: }
1884: if (n != 1 && n != 2)
1.380 djm 1885: fatal("%s line %d: Invalid %s spec.",
1886: filename, linenum, keyword);
1.372 dtucker 1887: if (*activep) {
1888: options->per_source_masklen_ipv4 = value;
1889: options->per_source_masklen_ipv6 = value2;
1890: }
1891: break;
1892:
1893: case sPerSourceMaxStartups:
1.380 djm 1894: arg = argv_next(&ac, &av);
1.372 dtucker 1895: if (!arg || *arg == '\0')
1.380 djm 1896: fatal("%s line %d: %s missing argument.",
1897: filename, linenum, keyword);
1.372 dtucker 1898: if (strcmp(arg, "none") == 0) { /* no limit */
1899: value = INT_MAX;
1900: } else {
1901: if ((errstr = atoi_err(arg, &value)) != NULL)
1.380 djm 1902: fatal("%s line %d: %s integer value %s.",
1903: filename, linenum, keyword, errstr);
1.372 dtucker 1904: }
1905: if (*activep)
1906: options->per_source_max_startups = value;
1907: break;
1908:
1.133 dtucker 1909: case sMaxAuthTries:
1910: intptr = &options->max_authtries;
1911: goto parse_int;
1.94 markus 1912:
1.180 djm 1913: case sMaxSessions:
1914: intptr = &options->max_sessions;
1915: goto parse_int;
1916:
1.94 markus 1917: case sBanner:
1918: charptr = &options->banner;
1919: goto parse_filename;
1.176 djm 1920:
1.94 markus 1921: /*
1922: * These options can contain %X options expanded at
1923: * connect time, so that you can specify paths like:
1924: *
1925: * AuthorizedKeysFile /etc/ssh_keys/%u
1926: */
1927: case sAuthorizedKeysFile:
1.380 djm 1928: uvalue = options->num_authkeys_files;
1929: while ((arg = argv_next(&ac, &av)) != NULL) {
1930: if (*arg == '\0') {
1931: error("%s line %d: keyword %s empty argument",
1932: filename, linenum, keyword);
1933: goto out;
1934: }
1935: arg2 = tilde_expand_filename(arg, getuid());
1936: if (*activep && uvalue == 0) {
1937: opt_array_append(filename, linenum, keyword,
1.314 djm 1938: &options->authorized_keys_files,
1.380 djm 1939: &options->num_authkeys_files, arg2);
1.219 djm 1940: }
1.380 djm 1941: free(arg2);
1.219 djm 1942: }
1.380 djm 1943: break;
1.219 djm 1944:
1.208 djm 1945: case sAuthorizedPrincipalsFile:
1946: charptr = &options->authorized_principals_file;
1.380 djm 1947: arg = argv_next(&ac, &av);
1.205 djm 1948: if (!arg || *arg == '\0')
1.380 djm 1949: fatal("%s line %d: %s missing argument.",
1950: filename, linenum, keyword);
1.205 djm 1951: if (*activep && *charptr == NULL) {
1.206 markus 1952: *charptr = tilde_expand_filename(arg, getuid());
1.205 djm 1953: /* increase optional counter */
1954: if (intptr != NULL)
1955: *intptr = *intptr + 1;
1956: }
1957: break;
1.94 markus 1958:
1959: case sClientAliveInterval:
1960: intptr = &options->client_alive_interval;
1961: goto parse_time;
1962:
1963: case sClientAliveCountMax:
1964: intptr = &options->client_alive_count_max;
1965: goto parse_int;
1.131 djm 1966:
1967: case sAcceptEnv:
1.380 djm 1968: while ((arg = argv_next(&ac, &av)) != NULL) {
1969: if (*arg == '\0' || strchr(arg, '=') != NULL)
1.131 djm 1970: fatal("%s line %d: Invalid environment name.",
1971: filename, linenum);
1.153 dtucker 1972: if (!*activep)
1.227 markus 1973: continue;
1.380 djm 1974: opt_array_append(filename, linenum, keyword,
1.314 djm 1975: &options->accept_env, &options->num_accept_env,
1976: arg);
1.131 djm 1977: }
1978: break;
1.145 reyk 1979:
1.332 djm 1980: case sSetEnv:
1981: uvalue = options->num_setenv;
1.380 djm 1982: while ((arg = argv_next(&ac, &av)) != NULL) {
1983: if (*arg == '\0' || strchr(arg, '=') == NULL)
1.332 djm 1984: fatal("%s line %d: Invalid environment.",
1985: filename, linenum);
1986: if (!*activep || uvalue != 0)
1987: continue;
1.385 djm 1988: if (lookup_setenv_in_list(arg, options->setenv,
1989: options->num_setenv) != NULL) {
1990: debug2("%s line %d: ignoring duplicate env "
1991: "name \"%.64s\"", filename, linenum, arg);
1992: continue;
1993: }
1.380 djm 1994: opt_array_append(filename, linenum, keyword,
1.332 djm 1995: &options->setenv, &options->num_setenv, arg);
1996: }
1997: break;
1998:
1.145 reyk 1999: case sPermitTunnel:
2000: intptr = &options->permit_tun;
1.380 djm 2001: arg = argv_next(&ac, &av);
1.146 reyk 2002: if (!arg || *arg == '\0')
1.380 djm 2003: fatal("%s line %d: %s missing argument.",
2004: filename, linenum, keyword);
1.182 dtucker 2005: value = -1;
2006: for (i = 0; tunmode_desc[i].val != -1; i++)
2007: if (strcmp(tunmode_desc[i].text, arg) == 0) {
2008: value = tunmode_desc[i].val;
2009: break;
2010: }
2011: if (value == -1)
1.380 djm 2012: fatal("%s line %d: bad %s argument %s",
2013: filename, linenum, keyword, arg);
1.268 djm 2014: if (*activep && *intptr == -1)
1.146 reyk 2015: *intptr = value;
2016: break;
1.94 markus 2017:
1.360 djm 2018: case sInclude:
2019: if (cmdline) {
2020: fatal("Include directive not supported as a "
2021: "command-line option");
2022: }
2023: value = 0;
1.380 djm 2024: while ((arg2 = argv_next(&ac, &av)) != NULL) {
2025: if (*arg2 == '\0') {
2026: error("%s line %d: keyword %s empty argument",
2027: filename, linenum, keyword);
2028: goto out;
2029: }
1.360 djm 2030: value++;
2031: found = 0;
2032: if (*arg2 != '/' && *arg2 != '~') {
1.361 markus 2033: xasprintf(&arg, "%s/%s", SSHDIR, arg2);
1.360 djm 2034: } else
2035: arg = xstrdup(arg2);
2036:
2037: /*
2038: * Don't let included files clobber the containing
2039: * file's Match state.
2040: */
2041: oactive = *activep;
2042:
2043: /* consult cache of include files */
2044: TAILQ_FOREACH(item, includes, entry) {
2045: if (strcmp(item->selector, arg) != 0)
2046: continue;
2047: if (item->filename != NULL) {
2048: parse_server_config_depth(options,
2049: item->filename, item->contents,
2050: includes, connectinfo,
1.365 djm 2051: (*inc_flags & SSHCFG_MATCH_ONLY
2052: ? SSHCFG_MATCH_ONLY : (oactive
2053: ? 0 : SSHCFG_NEVERMATCH)),
1.360 djm 2054: activep, depth + 1);
2055: }
2056: found = 1;
2057: *activep = oactive;
2058: }
2059: if (found != 0) {
2060: free(arg);
2061: continue;
2062: }
2063:
2064: /* requested glob was not in cache */
2065: debug2("%s line %d: new include %s",
2066: filename, linenum, arg);
2067: if ((r = glob(arg, 0, NULL, &gbuf)) != 0) {
2068: if (r != GLOB_NOMATCH) {
1.380 djm 2069: fatal("%s line %d: include \"%s\" glob "
2070: "failed", filename, linenum, arg);
1.360 djm 2071: }
2072: /*
2073: * If no entry matched then record a
2074: * placeholder to skip later glob calls.
2075: */
2076: debug2("%s line %d: no match for %s",
2077: filename, linenum, arg);
2078: item = xcalloc(1, sizeof(*item));
2079: item->selector = strdup(arg);
2080: TAILQ_INSERT_TAIL(includes,
2081: item, entry);
2082: }
2083: if (gbuf.gl_pathc > INT_MAX)
1.371 djm 2084: fatal_f("too many glob results");
1.360 djm 2085: for (n = 0; n < (int)gbuf.gl_pathc; n++) {
2086: debug2("%s line %d: including %s",
2087: filename, linenum, gbuf.gl_pathv[n]);
2088: item = xcalloc(1, sizeof(*item));
2089: item->selector = strdup(arg);
2090: item->filename = strdup(gbuf.gl_pathv[n]);
1.371 djm 2091: if ((item->contents = sshbuf_new()) == NULL)
2092: fatal_f("sshbuf_new failed");
1.360 djm 2093: load_server_config(item->filename,
2094: item->contents);
2095: parse_server_config_depth(options,
2096: item->filename, item->contents,
2097: includes, connectinfo,
1.365 djm 2098: (*inc_flags & SSHCFG_MATCH_ONLY
2099: ? SSHCFG_MATCH_ONLY : (oactive
2100: ? 0 : SSHCFG_NEVERMATCH)),
1.360 djm 2101: activep, depth + 1);
2102: *activep = oactive;
2103: TAILQ_INSERT_TAIL(includes, item, entry);
2104: }
2105: globfree(&gbuf);
2106: free(arg);
2107: }
2108: if (value == 0) {
1.380 djm 2109: fatal("%s line %d: %s missing filename argument",
2110: filename, linenum, keyword);
1.360 djm 2111: }
2112: break;
2113:
1.153 dtucker 2114: case sMatch:
2115: if (cmdline)
2116: fatal("Match directive not supported as a command-line "
1.379 djm 2117: "option");
1.380 djm 2118: value = match_cfg_line(&str, linenum,
1.365 djm 2119: (*inc_flags & SSHCFG_NEVERMATCH ? NULL : connectinfo));
1.153 dtucker 2120: if (value < 0)
2121: fatal("%s line %d: Bad Match condition", filename,
2122: linenum);
1.365 djm 2123: *activep = (*inc_flags & SSHCFG_NEVERMATCH) ? 0 : value;
1.380 djm 2124: /*
2125: * The MATCH_ONLY flag is applicable only until the first
2126: * match block.
2127: */
1.365 djm 2128: *inc_flags &= ~SSHCFG_MATCH_ONLY;
1.380 djm 2129: /*
2130: * If match_cfg_line() didn't consume all its arguments then
2131: * arrange for the extra arguments check below to fail.
2132: */
2133: if (str == NULL || *str == '\0')
2134: argv_consume(&ac);
1.156 dtucker 2135: break;
2136:
1.330 djm 2137: case sPermitListen:
1.156 dtucker 2138: case sPermitOpen:
1.330 djm 2139: if (opcode == sPermitListen) {
2140: uintptr = &options->num_permitted_listens;
2141: chararrayptr = &options->permitted_listens;
1.329 djm 2142: } else {
2143: uintptr = &options->num_permitted_opens;
2144: chararrayptr = &options->permitted_opens;
2145: }
1.380 djm 2146: arg = argv_next(&ac, &av);
1.156 dtucker 2147: if (!arg || *arg == '\0')
1.380 djm 2148: fatal("%s line %d: %s missing argument.",
2149: filename, linenum, keyword);
1.329 djm 2150: uvalue = *uintptr; /* modified later */
1.310 djm 2151: if (strcmp(arg, "any") == 0 || strcmp(arg, "none") == 0) {
1.329 djm 2152: if (*activep && uvalue == 0) {
2153: *uintptr = 1;
2154: *chararrayptr = xcalloc(1,
2155: sizeof(**chararrayptr));
2156: (*chararrayptr)[0] = xstrdup(arg);
1.311 dtucker 2157: }
1.156 dtucker 2158: break;
2159: }
1.380 djm 2160: for (; arg != NULL && *arg != '\0'; arg = argv_next(&ac, &av)) {
1.333 djm 2161: if (opcode == sPermitListen &&
2162: strchr(arg, ':') == NULL) {
2163: /*
2164: * Allow bare port number for PermitListen
2165: * to indicate a wildcard listen host.
2166: */
2167: xasprintf(&arg2, "*:%s", arg);
2168: } else {
2169: arg2 = xstrdup(arg);
1.383 dtucker 2170: p = hpdelim(&arg);
2171: if (p == NULL) {
1.380 djm 2172: fatal("%s line %d: %s missing host",
2173: filename, linenum, keyword);
1.333 djm 2174: }
2175: p = cleanhostname(p);
1.329 djm 2176: }
2177: if (arg == NULL ||
2178: ((port = permitopen_port(arg)) < 0)) {
1.380 djm 2179: fatal("%s line %d: %s bad port number",
2180: filename, linenum, keyword);
1.329 djm 2181: }
2182: if (*activep && uvalue == 0) {
1.380 djm 2183: opt_array_append(filename, linenum, keyword,
1.329 djm 2184: chararrayptr, uintptr, arg2);
1.314 djm 2185: }
2186: free(arg2);
1.159 dtucker 2187: }
1.153 dtucker 2188: break;
2189:
1.158 dtucker 2190: case sForceCommand:
1.380 djm 2191: if (str == NULL || *str == '\0')
2192: fatal("%s line %d: %s missing argument.",
2193: filename, linenum, keyword);
2194: len = strspn(str, WHITESPACE);
1.158 dtucker 2195: if (*activep && options->adm_forced_command == NULL)
1.380 djm 2196: options->adm_forced_command = xstrdup(str + len);
2197: argv_consume(&ac);
2198: break;
1.158 dtucker 2199:
1.176 djm 2200: case sChrootDirectory:
2201: charptr = &options->chroot_directory;
1.177 djm 2202:
1.380 djm 2203: arg = argv_next(&ac, &av);
1.177 djm 2204: if (!arg || *arg == '\0')
1.380 djm 2205: fatal("%s line %d: %s missing argument.",
2206: filename, linenum, keyword);
1.177 djm 2207: if (*activep && *charptr == NULL)
2208: *charptr = xstrdup(arg);
2209: break;
1.176 djm 2210:
1.204 djm 2211: case sTrustedUserCAKeys:
2212: charptr = &options->trusted_user_ca_keys;
2213: goto parse_filename;
2214:
2215: case sRevokedKeys:
2216: charptr = &options->revoked_keys_file;
2217: goto parse_filename;
2218:
1.355 djm 2219: case sSecurityKeyProvider:
2220: charptr = &options->sk_provider;
1.380 djm 2221: arg = argv_next(&ac, &av);
1.356 djm 2222: if (!arg || *arg == '\0')
1.380 djm 2223: fatal("%s line %d: %s missing argument.",
2224: filename, linenum, keyword);
1.356 djm 2225: if (*activep && *charptr == NULL) {
2226: *charptr = strcasecmp(arg, "internal") == 0 ?
2227: xstrdup(arg) : derelativise_path(arg);
2228: /* increase optional counter */
2229: if (intptr != NULL)
2230: *intptr = *intptr + 1;
2231: }
2232: break;
1.355 djm 2233:
1.213 djm 2234: case sIPQoS:
1.380 djm 2235: arg = argv_next(&ac, &av);
2236: if (!arg || *arg == '\0')
2237: fatal("%s line %d: %s missing argument.",
2238: filename, linenum, keyword);
1.213 djm 2239: if ((value = parse_ipqos(arg)) == -1)
1.380 djm 2240: fatal("%s line %d: Bad %s value: %s",
2241: filename, linenum, keyword, arg);
2242: arg = argv_next(&ac, &av);
1.213 djm 2243: if (arg == NULL)
2244: value2 = value;
2245: else if ((value2 = parse_ipqos(arg)) == -1)
1.380 djm 2246: fatal("%s line %d: Bad %s value: %s",
2247: filename, linenum, keyword, arg);
1.213 djm 2248: if (*activep) {
2249: options->ip_qos_interactive = value;
2250: options->ip_qos_bulk = value2;
2251: }
2252: break;
2253:
1.225 djm 2254: case sVersionAddendum:
1.380 djm 2255: if (str == NULL || *str == '\0')
2256: fatal("%s line %d: %s missing argument.",
2257: filename, linenum, keyword);
2258: len = strspn(str, WHITESPACE);
2259: if (strchr(str + len, '\r') != NULL) {
2260: fatal("%.200s line %d: Invalid %s argument",
2261: filename, linenum, keyword);
2262: }
2263: if ((arg = strchr(line, '#')) != NULL) {
2264: *arg = '\0';
2265: rtrim(line);
2266: }
1.225 djm 2267: if (*activep && options->version_addendum == NULL) {
1.380 djm 2268: if (strcasecmp(str + len, "none") == 0)
1.225 djm 2269: options->version_addendum = xstrdup("");
2270: else
1.380 djm 2271: options->version_addendum = xstrdup(str + len);
1.225 djm 2272: }
1.380 djm 2273: argv_consume(&ac);
2274: break;
1.225 djm 2275:
1.231 djm 2276: case sAuthorizedKeysCommand:
1.380 djm 2277: charptr = &options->authorized_keys_command;
2278: parse_command:
2279: len = strspn(str, WHITESPACE);
2280: if (str[len] != '/' && strcasecmp(str + len, "none") != 0) {
2281: fatal("%.200s line %d: %s must be an absolute path",
2282: filename, linenum, keyword);
2283: }
2284: if (*activep && options->authorized_keys_command == NULL)
2285: *charptr = xstrdup(str + len);
2286: argv_consume(&ac);
2287: break;
1.231 djm 2288:
2289: case sAuthorizedKeysCommandUser:
2290: charptr = &options->authorized_keys_command_user;
1.380 djm 2291: parse_localuser:
2292: arg = argv_next(&ac, &av);
2293: if (!arg || *arg == '\0') {
2294: fatal("%s line %d: missing %s argument.",
2295: filename, linenum, keyword);
2296: }
1.231 djm 2297: if (*activep && *charptr == NULL)
2298: *charptr = xstrdup(arg);
2299: break;
2300:
1.270 djm 2301: case sAuthorizedPrincipalsCommand:
1.380 djm 2302: charptr = &options->authorized_principals_command;
2303: goto parse_command;
1.270 djm 2304:
2305: case sAuthorizedPrincipalsCommandUser:
2306: charptr = &options->authorized_principals_command_user;
1.380 djm 2307: goto parse_localuser;
1.270 djm 2308:
1.232 djm 2309: case sAuthenticationMethods:
1.380 djm 2310: found = options->num_auth_methods == 0;
2311: value = 0; /* seen "any" pseudo-method */
2312: value2 = 0; /* successfully parsed any method */
2313: while ((arg = argv_next(&ac, &av)) != NULL) {
2314: if (strcmp(arg, "any") == 0) {
2315: if (options->num_auth_methods > 0) {
2316: fatal("%s line %d: \"any\" must "
2317: "appear alone in %s",
2318: filename, linenum, keyword);
1.291 djm 2319: }
1.380 djm 2320: value = 1;
2321: } else if (value) {
2322: fatal("%s line %d: \"any\" must appear "
2323: "alone in %s", filename, linenum, keyword);
2324: } else if (auth2_methods_valid(arg, 0) != 0) {
2325: fatal("%s line %d: invalid %s method list.",
2326: filename, linenum, keyword);
1.291 djm 2327: }
1.380 djm 2328: value2 = 1;
2329: if (!found || !*activep)
2330: continue;
2331: opt_array_append(filename, linenum, keyword,
2332: &options->auth_methods,
2333: &options->num_auth_methods, arg);
2334: }
2335: if (value2 == 0) {
2336: fatal("%s line %d: no %s specified",
2337: filename, linenum, keyword);
1.232 djm 2338: }
1.380 djm 2339: break;
1.232 djm 2340:
1.251 millert 2341: case sStreamLocalBindMask:
1.380 djm 2342: arg = argv_next(&ac, &av);
1.251 millert 2343: if (!arg || *arg == '\0')
1.380 djm 2344: fatal("%s line %d: %s missing argument.",
2345: filename, linenum, keyword);
1.251 millert 2346: /* Parse mode in octal format */
2347: value = strtol(arg, &p, 8);
2348: if (arg == p || value < 0 || value > 0777)
1.380 djm 2349: fatal("%s line %d: Invalid %s.",
2350: filename, linenum, keyword);
1.268 djm 2351: if (*activep)
2352: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1.251 millert 2353: break;
2354:
2355: case sStreamLocalBindUnlink:
2356: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2357: goto parse_flag;
2358:
1.256 djm 2359: case sFingerprintHash:
1.380 djm 2360: arg = argv_next(&ac, &av);
1.256 djm 2361: if (!arg || *arg == '\0')
1.380 djm 2362: fatal("%s line %d: %s missing argument.",
2363: filename, linenum, keyword);
1.256 djm 2364: if ((value = ssh_digest_alg_by_name(arg)) == -1)
1.380 djm 2365: fatal("%.200s line %d: Invalid %s algorithm \"%s\".",
2366: filename, linenum, keyword, arg);
1.256 djm 2367: if (*activep)
2368: options->fingerprint_hash = value;
2369: break;
2370:
1.309 djm 2371: case sExposeAuthInfo:
2372: intptr = &options->expose_userauth_info;
2373: goto parse_flag;
2374:
1.316 djm 2375: case sRDomain:
2376: charptr = &options->routing_domain;
1.380 djm 2377: arg = argv_next(&ac, &av);
1.316 djm 2378: if (!arg || *arg == '\0')
1.380 djm 2379: fatal("%s line %d: %s missing argument.",
2380: filename, linenum, keyword);
1.316 djm 2381: if (strcasecmp(arg, "none") != 0 && strcmp(arg, "%D") != 0 &&
2382: !valid_rdomain(arg))
1.380 djm 2383: fatal("%s line %d: invalid routing domain",
1.316 djm 2384: filename, linenum);
2385: if (*activep && *charptr == NULL)
2386: *charptr = xstrdup(arg);
1.321 dtucker 2387: break;
1.316 djm 2388:
1.386 djm 2389: case sRequiredRSASize:
2390: intptr = &options->required_rsa_size;
2391: goto parse_int;
2392:
1.94 markus 2393: case sDeprecated:
1.295 djm 2394: case sIgnore:
1.121 jakob 2395: case sUnsupported:
1.295 djm 2396: do_log2(opcode == sIgnore ?
2397: SYSLOG_LEVEL_DEBUG2 : SYSLOG_LEVEL_INFO,
2398: "%s line %d: %s option %s", filename, linenum,
1.380 djm 2399: opcode == sUnsupported ? "Unsupported" : "Deprecated",
2400: keyword);
2401: argv_consume(&ac);
1.94 markus 2402: break;
2403:
2404: default:
2405: fatal("%s line %d: Missing handler for opcode %s (%d)",
1.380 djm 2406: filename, linenum, keyword, opcode);
2407: }
2408: /* Check that there is no garbage at end of line. */
2409: if (ac > 0) {
2410: error("%.200s line %d: keyword %s extra arguments "
2411: "at end of line", filename, linenum, keyword);
2412: goto out;
1.94 markus 2413: }
1.380 djm 2414:
2415: /* success */
2416: ret = 0;
2417: out:
2418: argv_free(oav, oac);
2419: return ret;
1.94 markus 2420: }
2421:
1.360 djm 2422: int
2423: process_server_config_line(ServerOptions *options, char *line,
2424: const char *filename, int linenum, int *activep,
2425: struct connection_info *connectinfo, struct include_list *includes)
2426: {
1.365 djm 2427: int inc_flags = 0;
2428:
1.360 djm 2429: return process_server_config_line_depth(options, line, filename,
1.365 djm 2430: linenum, activep, connectinfo, &inc_flags, 0, includes);
1.360 djm 2431: }
2432:
2433:
1.94 markus 2434: /* Reads the server configuration file. */
1.25 markus 2435:
1.94 markus 2436: void
1.338 markus 2437: load_server_config(const char *filename, struct sshbuf *conf)
1.94 markus 2438: {
1.366 markus 2439: struct stat st;
1.331 markus 2440: char *line = NULL, *cp;
2441: size_t linesize = 0;
1.94 markus 2442: FILE *f;
1.388 ! dtucker 2443: int r;
1.81 stevesk 2444:
1.371 djm 2445: debug2_f("filename %s", filename);
1.134 djm 2446: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 2447: perror(filename);
2448: exit(1);
2449: }
1.338 markus 2450: sshbuf_reset(conf);
1.366 markus 2451: /* grow buffer, so realloc is avoided for large config files */
2452: if (fstat(fileno(f), &st) == 0 && st.st_size > 0 &&
1.379 djm 2453: (r = sshbuf_allocate(conf, st.st_size)) != 0)
1.371 djm 2454: fatal_fr(r, "allocate");
1.331 markus 2455: while (getline(&line, &linesize, f) != -1) {
1.134 djm 2456: /*
1.380 djm 2457: * Strip whitespace
1.135 deraadt 2458: * NB - preserve newlines, they are needed to reproduce
1.134 djm 2459: * line numbers later for error messages
2460: */
2461: cp = line + strspn(line, " \t\r");
1.338 markus 2462: if ((r = sshbuf_put(conf, cp, strlen(cp))) != 0)
1.371 djm 2463: fatal_fr(r, "sshbuf_put");
1.134 djm 2464: }
1.331 markus 2465: free(line);
1.338 markus 2466: if ((r = sshbuf_put_u8(conf, 0)) != 0)
1.371 djm 2467: fatal_fr(r, "sshbuf_put_u8");
1.134 djm 2468: fclose(f);
1.371 djm 2469: debug2_f("done config len = %zu", sshbuf_len(conf));
1.134 djm 2470: }
2471:
2472: void
1.226 dtucker 2473: parse_server_match_config(ServerOptions *options,
1.360 djm 2474: struct include_list *includes, struct connection_info *connectinfo)
1.153 dtucker 2475: {
2476: ServerOptions mo;
2477:
2478: initialize_server_options(&mo);
1.360 djm 2479: parse_server_config(&mo, "reprocess config", cfg, includes,
1.384 djm 2480: connectinfo, 0);
1.168 dtucker 2481: copy_set_server_options(options, &mo, 0);
1.153 dtucker 2482: }
2483:
1.226 dtucker 2484: int parse_server_match_testspec(struct connection_info *ci, char *spec)
2485: {
2486: char *p;
2487:
2488: while ((p = strsep(&spec, ",")) && *p != '\0') {
2489: if (strncmp(p, "addr=", 5) == 0) {
2490: ci->address = xstrdup(p + 5);
2491: } else if (strncmp(p, "host=", 5) == 0) {
2492: ci->host = xstrdup(p + 5);
2493: } else if (strncmp(p, "user=", 5) == 0) {
2494: ci->user = xstrdup(p + 5);
2495: } else if (strncmp(p, "laddr=", 6) == 0) {
2496: ci->laddress = xstrdup(p + 6);
1.317 djm 2497: } else if (strncmp(p, "rdomain=", 8) == 0) {
2498: ci->rdomain = xstrdup(p + 8);
1.226 dtucker 2499: } else if (strncmp(p, "lport=", 6) == 0) {
2500: ci->lport = a2port(p + 6);
2501: if (ci->lport == -1) {
2502: fprintf(stderr, "Invalid port '%s' in test mode"
1.379 djm 2503: " specification %s\n", p+6, p);
1.226 dtucker 2504: return -1;
2505: }
2506: } else {
2507: fprintf(stderr, "Invalid test mode specification %s\n",
1.379 djm 2508: p);
1.226 dtucker 2509: return -1;
2510: }
2511: }
2512: return 0;
2513: }
2514:
1.168 dtucker 2515: /*
2516: * Copy any supported values that are set.
2517: *
1.195 jj 2518: * If the preauth flag is set, we do not bother copying the string or
1.168 dtucker 2519: * array values that are not used pre-authentication, because any that we
1.328 djm 2520: * do use must be explicitly sent in mm_getpwnamallow().
1.168 dtucker 2521: */
1.153 dtucker 2522: void
1.168 dtucker 2523: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 2524: {
1.247 djm 2525: #define M_CP_INTOPT(n) do {\
2526: if (src->n != -1) \
2527: dst->n = src->n; \
2528: } while (0)
2529:
1.168 dtucker 2530: M_CP_INTOPT(password_authentication);
2531: M_CP_INTOPT(gss_authentication);
2532: M_CP_INTOPT(pubkey_authentication);
1.354 djm 2533: M_CP_INTOPT(pubkey_auth_options);
1.168 dtucker 2534: M_CP_INTOPT(kerberos_authentication);
2535: M_CP_INTOPT(hostbased_authentication);
1.209 djm 2536: M_CP_INTOPT(hostbased_uses_name_from_packet_only);
1.168 dtucker 2537: M_CP_INTOPT(kbd_interactive_authentication);
1.175 dtucker 2538: M_CP_INTOPT(permit_root_login);
1.188 djm 2539: M_CP_INTOPT(permit_empty_passwd);
1.362 djm 2540: M_CP_INTOPT(ignore_rhosts);
1.168 dtucker 2541:
2542: M_CP_INTOPT(allow_tcp_forwarding);
1.251 millert 2543: M_CP_INTOPT(allow_streamlocal_forwarding);
1.178 pyr 2544: M_CP_INTOPT(allow_agent_forwarding);
1.301 djm 2545: M_CP_INTOPT(disable_forwarding);
1.309 djm 2546: M_CP_INTOPT(expose_userauth_info);
1.209 djm 2547: M_CP_INTOPT(permit_tun);
1.251 millert 2548: M_CP_INTOPT(fwd_opts.gateway_ports);
1.289 djm 2549: M_CP_INTOPT(fwd_opts.streamlocal_bind_unlink);
1.168 dtucker 2550: M_CP_INTOPT(x11_display_offset);
2551: M_CP_INTOPT(x11_forwarding);
2552: M_CP_INTOPT(x11_use_localhost);
1.244 djm 2553: M_CP_INTOPT(permit_tty);
1.250 djm 2554: M_CP_INTOPT(permit_user_rc);
1.180 djm 2555: M_CP_INTOPT(max_sessions);
1.184 dtucker 2556: M_CP_INTOPT(max_authtries);
1.300 markus 2557: M_CP_INTOPT(client_alive_count_max);
2558: M_CP_INTOPT(client_alive_interval);
1.213 djm 2559: M_CP_INTOPT(ip_qos_interactive);
2560: M_CP_INTOPT(ip_qos_bulk);
1.235 dtucker 2561: M_CP_INTOPT(rekey_limit);
2562: M_CP_INTOPT(rekey_interval);
1.308 djm 2563: M_CP_INTOPT(log_level);
1.386 djm 2564: M_CP_INTOPT(required_rsa_size);
1.289 djm 2565:
2566: /*
2567: * The bind_mask is a mode_t that may be unsigned, so we can't use
2568: * M_CP_INTOPT - it does a signed comparison that causes compiler
2569: * warnings.
2570: */
1.290 dtucker 2571: if (src->fwd_opts.streamlocal_bind_mask != (mode_t)-1) {
1.289 djm 2572: dst->fwd_opts.streamlocal_bind_mask =
2573: src->fwd_opts.streamlocal_bind_mask;
2574: }
1.247 djm 2575:
2576: /* M_CP_STROPT and M_CP_STRARRAYOPT should not appear before here */
2577: #define M_CP_STROPT(n) do {\
2578: if (src->n != NULL && dst->n != src->n) { \
2579: free(dst->n); \
2580: dst->n = src->n; \
2581: } \
2582: } while(0)
1.314 djm 2583: #define M_CP_STRARRAYOPT(s, num_s) do {\
2584: u_int i; \
2585: if (src->num_s != 0) { \
2586: for (i = 0; i < dst->num_s; i++) \
2587: free(dst->s[i]); \
2588: free(dst->s); \
2589: dst->s = xcalloc(src->num_s, sizeof(*dst->s)); \
2590: for (i = 0; i < src->num_s; i++) \
2591: dst->s[i] = xstrdup(src->s[i]); \
2592: dst->num_s = src->num_s; \
1.312 djm 2593: } \
2594: } while(0)
1.168 dtucker 2595:
1.218 djm 2596: /* See comment in servconf.h */
2597: COPY_MATCH_STRING_OPTS();
1.282 djm 2598:
2599: /* Arguments that accept '+...' need to be expanded */
2600: assemble_algorithms(dst);
1.216 djm 2601:
1.217 dtucker 2602: /*
2603: * The only things that should be below this point are string options
2604: * which are only used after authentication.
2605: */
1.168 dtucker 2606: if (preauth)
2607: return;
1.219 djm 2608:
1.283 djm 2609: /* These options may be "none" to clear a global setting */
1.168 dtucker 2610: M_CP_STROPT(adm_forced_command);
1.283 djm 2611: if (option_clear_or_none(dst->adm_forced_command)) {
2612: free(dst->adm_forced_command);
2613: dst->adm_forced_command = NULL;
2614: }
1.176 djm 2615: M_CP_STROPT(chroot_directory);
1.283 djm 2616: if (option_clear_or_none(dst->chroot_directory)) {
2617: free(dst->chroot_directory);
2618: dst->chroot_directory = NULL;
2619: }
1.153 dtucker 2620: }
1.168 dtucker 2621:
2622: #undef M_CP_INTOPT
2623: #undef M_CP_STROPT
1.219 djm 2624: #undef M_CP_STRARRAYOPT
1.153 dtucker 2625:
1.360 djm 2626: #define SERVCONF_MAX_DEPTH 16
1.364 djm 2627: static void
1.360 djm 2628: parse_server_config_depth(ServerOptions *options, const char *filename,
2629: struct sshbuf *conf, struct include_list *includes,
2630: struct connection_info *connectinfo, int flags, int *activep, int depth)
1.134 djm 2631: {
1.360 djm 2632: int linenum, bad_options = 0;
1.136 dtucker 2633: char *cp, *obuf, *cbuf;
1.134 djm 2634:
1.360 djm 2635: if (depth < 0 || depth > SERVCONF_MAX_DEPTH)
2636: fatal("Too many recursive configuration includes");
2637:
1.371 djm 2638: debug2_f("config %s len %zu%s", filename, sshbuf_len(conf),
1.365 djm 2639: (flags & SSHCFG_NEVERMATCH ? " [checking syntax only]" : ""));
1.134 djm 2640:
1.287 djm 2641: if ((obuf = cbuf = sshbuf_dup_string(conf)) == NULL)
1.371 djm 2642: fatal_f("sshbuf_dup_string failed");
1.137 dtucker 2643: linenum = 1;
1.140 deraadt 2644: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.360 djm 2645: if (process_server_config_line_depth(options, cp,
1.365 djm 2646: filename, linenum++, activep, connectinfo, &flags,
1.360 djm 2647: depth, includes) != 0)
1.94 markus 2648: bad_options++;
1.1 deraadt 2649: }
1.239 djm 2650: free(obuf);
1.78 stevesk 2651: if (bad_options > 0)
2652: fatal("%s: terminating, %d bad configuration options",
2653: filename, bad_options);
1.360 djm 2654: }
2655:
2656: void
2657: parse_server_config(ServerOptions *options, const char *filename,
2658: struct sshbuf *conf, struct include_list *includes,
1.384 djm 2659: struct connection_info *connectinfo, int reexec)
1.360 djm 2660: {
2661: int active = connectinfo ? 0 : 1;
2662: parse_server_config_depth(options, filename, conf, includes,
1.365 djm 2663: connectinfo, (connectinfo ? SSHCFG_MATCH_ONLY : 0), &active, 0);
1.384 djm 2664: if (!reexec)
2665: process_queued_listen_addrs(options);
1.182 dtucker 2666: }
2667:
2668: static const char *
1.221 djm 2669: fmt_multistate_int(int val, const struct multistate *m)
2670: {
2671: u_int i;
2672:
2673: for (i = 0; m[i].key != NULL; i++) {
2674: if (m[i].value == val)
2675: return m[i].key;
2676: }
2677: return "UNKNOWN";
2678: }
2679:
2680: static const char *
1.182 dtucker 2681: fmt_intarg(ServerOpCodes code, int val)
2682: {
1.221 djm 2683: if (val == -1)
2684: return "unset";
2685: switch (code) {
2686: case sAddressFamily:
2687: return fmt_multistate_int(val, multistate_addressfamily);
2688: case sPermitRootLogin:
2689: return fmt_multistate_int(val, multistate_permitrootlogin);
2690: case sGatewayPorts:
2691: return fmt_multistate_int(val, multistate_gatewayports);
2692: case sCompression:
2693: return fmt_multistate_int(val, multistate_compression);
1.233 djm 2694: case sAllowTcpForwarding:
2695: return fmt_multistate_int(val, multistate_tcpfwd);
1.251 millert 2696: case sAllowStreamLocalForwarding:
2697: return fmt_multistate_int(val, multistate_tcpfwd);
1.363 djm 2698: case sIgnoreRhosts:
2699: return fmt_multistate_int(val, multistate_ignore_rhosts);
1.256 djm 2700: case sFingerprintHash:
2701: return ssh_digest_alg_name(val);
1.221 djm 2702: default:
2703: switch (val) {
2704: case 0:
2705: return "no";
2706: case 1:
2707: return "yes";
2708: default:
2709: return "UNKNOWN";
2710: }
1.182 dtucker 2711: }
2712: }
2713:
2714: static void
2715: dump_cfg_int(ServerOpCodes code, int val)
2716: {
2717: printf("%s %d\n", lookup_opcode_name(code), val);
2718: }
2719:
2720: static void
1.263 dtucker 2721: dump_cfg_oct(ServerOpCodes code, int val)
2722: {
2723: printf("%s 0%o\n", lookup_opcode_name(code), val);
2724: }
2725:
2726: static void
1.182 dtucker 2727: dump_cfg_fmtint(ServerOpCodes code, int val)
2728: {
2729: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2730: }
2731:
2732: static void
2733: dump_cfg_string(ServerOpCodes code, const char *val)
2734: {
1.257 djm 2735: printf("%s %s\n", lookup_opcode_name(code),
2736: val == NULL ? "none" : val);
1.182 dtucker 2737: }
2738:
2739: static void
2740: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
2741: {
2742: u_int i;
2743:
2744: for (i = 0; i < count; i++)
1.219 djm 2745: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2746: }
2747:
2748: static void
2749: dump_cfg_strarray_oneline(ServerOpCodes code, u_int count, char **vals)
2750: {
2751: u_int i;
2752:
1.291 djm 2753: if (count <= 0 && code != sAuthenticationMethods)
1.261 dtucker 2754: return;
1.219 djm 2755: printf("%s", lookup_opcode_name(code));
2756: for (i = 0; i < count; i++)
2757: printf(" %s", vals[i]);
1.291 djm 2758: if (code == sAuthenticationMethods && count == 0)
2759: printf(" any");
1.219 djm 2760: printf("\n");
1.182 dtucker 2761: }
2762:
1.315 djm 2763: static char *
2764: format_listen_addrs(struct listenaddr *la)
1.182 dtucker 2765: {
1.315 djm 2766: int r;
1.182 dtucker 2767: struct addrinfo *ai;
1.315 djm 2768: char addr[NI_MAXHOST], port[NI_MAXSERV];
1.263 dtucker 2769: char *laddr1 = xstrdup(""), *laddr2 = NULL;
1.182 dtucker 2770:
1.263 dtucker 2771: /*
2772: * ListenAddress must be after Port. add_one_listen_addr pushes
2773: * addresses onto a stack, so to maintain ordering we need to
2774: * print these in reverse order.
2775: */
1.315 djm 2776: for (ai = la->addrs; ai; ai = ai->ai_next) {
2777: if ((r = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1.182 dtucker 2778: sizeof(addr), port, sizeof(port),
2779: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1.315 djm 2780: error("getnameinfo: %.100s", ssh_gai_strerror(r));
2781: continue;
2782: }
2783: laddr2 = laddr1;
2784: if (ai->ai_family == AF_INET6) {
2785: xasprintf(&laddr1, "listenaddress [%s]:%s%s%s\n%s",
2786: addr, port,
2787: la->rdomain == NULL ? "" : " rdomain ",
2788: la->rdomain == NULL ? "" : la->rdomain,
2789: laddr2);
1.182 dtucker 2790: } else {
1.315 djm 2791: xasprintf(&laddr1, "listenaddress %s:%s%s%s\n%s",
2792: addr, port,
2793: la->rdomain == NULL ? "" : " rdomain ",
2794: la->rdomain == NULL ? "" : la->rdomain,
2795: laddr2);
1.182 dtucker 2796: }
1.315 djm 2797: free(laddr2);
2798: }
2799: return laddr1;
2800: }
2801:
2802: void
2803: dump_config(ServerOptions *o)
2804: {
2805: char *s;
2806: u_int i;
2807:
2808: /* these are usually at the top of the config */
2809: for (i = 0; i < o->num_ports; i++)
2810: printf("port %d\n", o->ports[i]);
2811: dump_cfg_fmtint(sAddressFamily, o->address_family);
2812:
2813: for (i = 0; i < o->num_listen_addrs; i++) {
2814: s = format_listen_addrs(&o->listen_addrs[i]);
2815: printf("%s", s);
2816: free(s);
1.182 dtucker 2817: }
2818:
2819: /* integer arguments */
2820: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
2821: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
2822: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1.189 djm 2823: dump_cfg_int(sMaxSessions, o->max_sessions);
1.182 dtucker 2824: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
2825: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1.386 djm 2826: dump_cfg_int(sRequiredRSASize, o->required_rsa_size);
1.263 dtucker 2827: dump_cfg_oct(sStreamLocalBindMask, o->fwd_opts.streamlocal_bind_mask);
1.182 dtucker 2828:
2829: /* formatted integer arguments */
2830: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
2831: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
2832: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
2833: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
2834: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
2835: o->hostbased_uses_name_from_packet_only);
2836: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1.187 djm 2837: #ifdef KRB5
1.182 dtucker 2838: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
2839: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
2840: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
2841: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1.187 djm 2842: #endif
2843: #ifdef GSSAPI
1.182 dtucker 2844: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
2845: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1.187 djm 2846: #endif
1.182 dtucker 2847: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
2848: dump_cfg_fmtint(sKbdInteractiveAuthentication,
2849: o->kbd_interactive_authentication);
2850: dump_cfg_fmtint(sPrintMotd, o->print_motd);
2851: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
2852: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
2853: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1.244 djm 2854: dump_cfg_fmtint(sPermitTTY, o->permit_tty);
1.250 djm 2855: dump_cfg_fmtint(sPermitUserRC, o->permit_user_rc);
1.182 dtucker 2856: dump_cfg_fmtint(sStrictModes, o->strict_modes);
2857: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
2858: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
2859: dump_cfg_fmtint(sCompression, o->compression);
1.251 millert 2860: dump_cfg_fmtint(sGatewayPorts, o->fwd_opts.gateway_ports);
1.182 dtucker 2861: dump_cfg_fmtint(sUseDNS, o->use_dns);
2862: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1.261 dtucker 2863: dump_cfg_fmtint(sAllowAgentForwarding, o->allow_agent_forwarding);
1.301 djm 2864: dump_cfg_fmtint(sDisableForwarding, o->disable_forwarding);
1.251 millert 2865: dump_cfg_fmtint(sAllowStreamLocalForwarding, o->allow_streamlocal_forwarding);
1.288 djm 2866: dump_cfg_fmtint(sStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
1.256 djm 2867: dump_cfg_fmtint(sFingerprintHash, o->fingerprint_hash);
1.309 djm 2868: dump_cfg_fmtint(sExposeAuthInfo, o->expose_userauth_info);
1.182 dtucker 2869:
2870: /* string arguments */
2871: dump_cfg_string(sPidFile, o->pid_file);
1.378 dtucker 2872: dump_cfg_string(sModuliFile, o->moduli_file);
1.182 dtucker 2873: dump_cfg_string(sXAuthLocation, o->xauth_location);
1.358 dtucker 2874: dump_cfg_string(sCiphers, o->ciphers);
2875: dump_cfg_string(sMacs, o->macs);
1.182 dtucker 2876: dump_cfg_string(sBanner, o->banner);
2877: dump_cfg_string(sForceCommand, o->adm_forced_command);
1.201 dtucker 2878: dump_cfg_string(sChrootDirectory, o->chroot_directory);
1.204 djm 2879: dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
2880: dump_cfg_string(sRevokedKeys, o->revoked_keys_file);
1.355 djm 2881: dump_cfg_string(sSecurityKeyProvider, o->sk_provider);
1.208 djm 2882: dump_cfg_string(sAuthorizedPrincipalsFile,
2883: o->authorized_principals_file);
1.261 dtucker 2884: dump_cfg_string(sVersionAddendum, *o->version_addendum == '\0'
2885: ? "none" : o->version_addendum);
1.231 djm 2886: dump_cfg_string(sAuthorizedKeysCommand, o->authorized_keys_command);
2887: dump_cfg_string(sAuthorizedKeysCommandUser, o->authorized_keys_command_user);
1.270 djm 2888: dump_cfg_string(sAuthorizedPrincipalsCommand, o->authorized_principals_command);
2889: dump_cfg_string(sAuthorizedPrincipalsCommandUser, o->authorized_principals_command_user);
1.240 markus 2890: dump_cfg_string(sHostKeyAgent, o->host_key_agent);
1.358 dtucker 2891: dump_cfg_string(sKexAlgorithms, o->kex_algorithms);
2892: dump_cfg_string(sCASignatureAlgorithms, o->ca_sign_algorithms);
1.375 dtucker 2893: dump_cfg_string(sHostbasedAcceptedAlgorithms, o->hostbased_accepted_algos);
1.358 dtucker 2894: dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms);
1.374 dtucker 2895: dump_cfg_string(sPubkeyAcceptedAlgorithms, o->pubkey_accepted_algos);
1.316 djm 2896: dump_cfg_string(sRDomain, o->routing_domain);
1.182 dtucker 2897:
2898: /* string arguments requiring a lookup */
2899: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
2900: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
2901:
2902: /* string array arguments */
1.219 djm 2903: dump_cfg_strarray_oneline(sAuthorizedKeysFile, o->num_authkeys_files,
2904: o->authorized_keys_files);
1.182 dtucker 2905: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
1.379 djm 2906: o->host_key_files);
1.261 dtucker 2907: dump_cfg_strarray(sHostCertificate, o->num_host_cert_files,
1.379 djm 2908: o->host_cert_files);
1.182 dtucker 2909: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
2910: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
2911: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
2912: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
2913: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1.332 djm 2914: dump_cfg_strarray(sSetEnv, o->num_setenv, o->setenv);
1.232 djm 2915: dump_cfg_strarray_oneline(sAuthenticationMethods,
2916: o->num_auth_methods, o->auth_methods);
1.370 djm 2917: dump_cfg_strarray_oneline(sLogVerbose,
2918: o->num_log_verbose, o->log_verbose);
1.182 dtucker 2919:
2920: /* other arguments */
2921: for (i = 0; i < o->num_subsystems; i++)
2922: printf("subsystem %s %s\n", o->subsystem_name[i],
2923: o->subsystem_args[i]);
2924:
2925: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
2926: o->max_startups_rate, o->max_startups);
1.372 dtucker 2927: printf("persourcemaxstartups ");
2928: if (o->per_source_max_startups == INT_MAX)
2929: printf("none\n");
2930: else
2931: printf("%d\n", o->per_source_max_startups);
1.373 dtucker 2932: printf("persourcenetblocksize %d:%d\n", o->per_source_masklen_ipv4,
1.372 dtucker 2933: o->per_source_masklen_ipv6);
1.182 dtucker 2934:
1.318 djm 2935: s = NULL;
2936: for (i = 0; tunmode_desc[i].val != -1; i++) {
1.182 dtucker 2937: if (tunmode_desc[i].val == o->permit_tun) {
2938: s = tunmode_desc[i].text;
2939: break;
2940: }
1.318 djm 2941: }
1.182 dtucker 2942: dump_cfg_string(sPermitTunnel, s);
1.213 djm 2943:
1.214 stevesk 2944: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2945: printf("%s\n", iptos2str(o->ip_qos_bulk));
1.235 dtucker 2946:
1.284 dtucker 2947: printf("rekeylimit %llu %d\n", (unsigned long long)o->rekey_limit,
1.241 djm 2948: o->rekey_interval);
1.182 dtucker 2949:
1.310 djm 2950: printf("permitopen");
2951: if (o->num_permitted_opens == 0)
2952: printf(" any");
2953: else {
2954: for (i = 0; i < o->num_permitted_opens; i++)
2955: printf(" %s", o->permitted_opens[i]);
1.329 djm 2956: }
2957: printf("\n");
1.330 djm 2958: printf("permitlisten");
2959: if (o->num_permitted_listens == 0)
1.329 djm 2960: printf(" any");
2961: else {
1.330 djm 2962: for (i = 0; i < o->num_permitted_listens; i++)
2963: printf(" %s", o->permitted_listens[i]);
1.310 djm 2964: }
2965: printf("\n");
1.334 djm 2966:
1.367 djm 2967: if (o->permit_user_env_allowlist == NULL) {
1.334 djm 2968: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
2969: } else {
2970: printf("permituserenvironment %s\n",
1.367 djm 2971: o->permit_user_env_allowlist);
1.334 djm 2972: }
2973:
1.354 djm 2974: printf("pubkeyauthoptions");
2975: if (o->pubkey_auth_options == 0)
2976: printf(" none");
2977: if (o->pubkey_auth_options & PUBKEYAUTH_TOUCH_REQUIRED)
2978: printf(" touch-required");
1.368 djm 2979: if (o->pubkey_auth_options & PUBKEYAUTH_VERIFY_REQUIRED)
2980: printf(" verify-required");
1.354 djm 2981: printf("\n");
1.1 deraadt 2982: }
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