Annotation of src/usr.bin/ssh/servconf.c, Revision 1.359
1.226 dtucker 1:
1.359 ! dtucker 2: /* $OpenBSD: servconf.c,v 1.358 2020/01/23 02:46:49 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>
1.154 stevesk 18:
1.213 djm 19: #include <netinet/in.h>
20: #include <netinet/ip.h>
1.315 djm 21: #include <net/route.h>
1.213 djm 22:
1.235 dtucker 23: #include <ctype.h>
1.154 stevesk 24: #include <netdb.h>
1.165 dtucker 25: #include <pwd.h>
1.162 stevesk 26: #include <stdio.h>
1.161 stevesk 27: #include <stdlib.h>
1.160 stevesk 28: #include <string.h>
1.164 deraadt 29: #include <signal.h>
1.155 stevesk 30: #include <unistd.h>
1.259 deraadt 31: #include <limits.h>
1.164 deraadt 32: #include <stdarg.h>
1.182 dtucker 33: #include <errno.h>
1.236 dtucker 34: #include <util.h>
1.1 deraadt 35:
1.164 deraadt 36: #include "xmalloc.h"
1.1 deraadt 37: #include "ssh.h"
1.62 markus 38: #include "log.h"
1.338 markus 39: #include "sshbuf.h"
1.251 millert 40: #include "misc.h"
1.1 deraadt 41: #include "servconf.h"
1.33 markus 42: #include "compat.h"
1.60 markus 43: #include "pathnames.h"
1.62 markus 44: #include "cipher.h"
1.339 markus 45: #include "sshkey.h"
1.66 markus 46: #include "kex.h"
47: #include "mac.h"
1.153 dtucker 48: #include "match.h"
1.156 dtucker 49: #include "channels.h"
1.165 dtucker 50: #include "groupaccess.h"
1.226 dtucker 51: #include "canohost.h"
52: #include "packet.h"
1.338 markus 53: #include "ssherr.h"
1.232 djm 54: #include "hostfile.h"
55: #include "auth.h"
1.252 djm 56: #include "myproposal.h"
1.256 djm 57: #include "digest.h"
1.345 djm 58:
1.315 djm 59: static void add_listen_addr(ServerOptions *, const char *,
60: const char *, int);
61: static void add_one_listen_addr(ServerOptions *, const char *,
62: const char *, int);
1.29 markus 63:
1.102 provos 64: /* Use of privilege separation or not */
65: extern int use_privsep;
1.338 markus 66: extern struct sshbuf *cfg;
1.62 markus 67:
1.1 deraadt 68: /* Initializes the server options to their default values. */
69:
1.34 markus 70: void
1.25 markus 71: initialize_server_options(ServerOptions *options)
1.1 deraadt 72: {
1.25 markus 73: memset(options, 0, sizeof(*options));
1.29 markus 74: options->num_ports = 0;
75: options->ports_from_cmdline = 0;
1.266 dtucker 76: options->queued_listen_addrs = NULL;
77: options->num_queued_listens = 0;
1.29 markus 78: options->listen_addrs = NULL;
1.315 djm 79: options->num_listen_addrs = 0;
1.138 djm 80: options->address_family = -1;
1.316 djm 81: options->routing_domain = NULL;
1.54 markus 82: options->num_host_key_files = 0;
1.203 djm 83: options->num_host_cert_files = 0;
1.240 markus 84: options->host_key_agent = NULL;
1.36 markus 85: options->pid_file = NULL;
1.25 markus 86: options->login_grace_time = -1;
1.279 chris 87: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 88: options->ignore_rhosts = -1;
89: options->ignore_user_known_hosts = -1;
90: options->print_motd = -1;
1.72 stevesk 91: options->print_lastlog = -1;
1.25 markus 92: options->x11_forwarding = -1;
93: options->x11_display_offset = -1;
1.99 stevesk 94: options->x11_use_localhost = -1;
1.244 djm 95: options->permit_tty = -1;
1.250 djm 96: options->permit_user_rc = -1;
1.42 markus 97: options->xauth_location = NULL;
1.25 markus 98: options->strict_modes = -1;
1.129 markus 99: options->tcp_keep_alive = -1;
1.101 markus 100: options->log_facility = SYSLOG_FACILITY_NOT_SET;
101: options->log_level = SYSLOG_LEVEL_NOT_SET;
1.75 markus 102: options->hostbased_authentication = -1;
103: options->hostbased_uses_name_from_packet_only = -1;
1.258 djm 104: options->hostbased_key_types = NULL;
1.276 markus 105: options->hostkeyalgorithms = NULL;
1.54 markus 106: options->pubkey_authentication = -1;
1.354 djm 107: options->pubkey_auth_options = -1;
1.258 djm 108: options->pubkey_key_types = NULL;
1.25 markus 109: options->kerberos_authentication = -1;
110: options->kerberos_or_local_passwd = -1;
111: options->kerberos_ticket_cleanup = -1;
1.130 jakob 112: options->kerberos_get_afs_token = -1;
1.125 markus 113: options->gss_authentication=-1;
114: options->gss_cleanup_creds = -1;
1.271 djm 115: options->gss_strict_acceptor = -1;
1.25 markus 116: options->password_authentication = -1;
1.52 markus 117: options->kbd_interactive_authentication = -1;
1.80 markus 118: options->challenge_response_authentication = -1;
1.25 markus 119: options->permit_empty_passwd = -1;
1.113 markus 120: options->permit_user_env = -1;
1.334 djm 121: options->permit_user_env_whitelist = NULL;
1.111 markus 122: options->compression = -1;
1.235 dtucker 123: options->rekey_limit = -1;
124: options->rekey_interval = -1;
1.53 markus 125: options->allow_tcp_forwarding = -1;
1.251 millert 126: options->allow_streamlocal_forwarding = -1;
1.178 pyr 127: options->allow_agent_forwarding = -1;
1.25 markus 128: options->num_allow_users = 0;
129: options->num_deny_users = 0;
130: options->num_allow_groups = 0;
131: options->num_deny_groups = 0;
1.33 markus 132: options->ciphers = NULL;
1.66 markus 133: options->macs = NULL;
1.211 djm 134: options->kex_algorithms = NULL;
1.341 djm 135: options->ca_sign_algorithms = NULL;
1.251 millert 136: options->fwd_opts.gateway_ports = -1;
137: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
138: options->fwd_opts.streamlocal_bind_unlink = -1;
1.43 jakob 139: options->num_subsystems = 0;
1.50 markus 140: options->max_startups_begin = -1;
141: options->max_startups_rate = -1;
1.46 markus 142: options->max_startups = -1;
1.133 dtucker 143: options->max_authtries = -1;
1.180 djm 144: options->max_sessions = -1;
1.57 markus 145: options->banner = NULL;
1.122 markus 146: options->use_dns = -1;
1.77 beck 147: options->client_alive_interval = -1;
148: options->client_alive_count_max = -1;
1.219 djm 149: options->num_authkeys_files = 0;
1.131 djm 150: options->num_accept_env = 0;
1.332 djm 151: options->num_setenv = 0;
1.145 reyk 152: options->permit_tun = -1;
1.310 djm 153: options->permitted_opens = NULL;
1.330 djm 154: options->permitted_listens = NULL;
1.158 dtucker 155: options->adm_forced_command = NULL;
1.176 djm 156: options->chroot_directory = NULL;
1.231 djm 157: options->authorized_keys_command = NULL;
158: options->authorized_keys_command_user = NULL;
1.204 djm 159: options->revoked_keys_file = NULL;
1.355 djm 160: options->sk_provider = NULL;
1.204 djm 161: options->trusted_user_ca_keys = NULL;
1.208 djm 162: options->authorized_principals_file = NULL;
1.270 djm 163: options->authorized_principals_command = NULL;
164: options->authorized_principals_command_user = NULL;
1.213 djm 165: options->ip_qos_interactive = -1;
166: options->ip_qos_bulk = -1;
1.225 djm 167: options->version_addendum = NULL;
1.256 djm 168: options->fingerprint_hash = -1;
1.301 djm 169: options->disable_forwarding = -1;
1.309 djm 170: options->expose_userauth_info = -1;
1.1 deraadt 171: }
172:
1.257 djm 173: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
174: static int
175: option_clear_or_none(const char *o)
176: {
177: return o == NULL || strcasecmp(o, "none") == 0;
178: }
179:
1.282 djm 180: static void
181: assemble_algorithms(ServerOptions *o)
182: {
1.341 djm 183: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.358 dtucker 184: char *def_cipher, *def_mac, *def_kex, *def_key, *def_sig;
1.340 djm 185: int r;
1.335 djm 186:
187: all_cipher = cipher_alg_list(',', 0);
188: all_mac = mac_alg_list(',');
189: all_kex = kex_alg_list(',');
190: all_key = sshkey_alg_list(0, 0, 1, ',');
1.341 djm 191: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.358 dtucker 192: /* remove unsupported algos from default lists */
193: def_cipher = match_filter_whitelist(KEX_SERVER_ENCRYPT, all_cipher);
194: def_mac = match_filter_whitelist(KEX_SERVER_MAC, all_mac);
195: def_kex = match_filter_whitelist(KEX_SERVER_KEX, all_kex);
196: def_key = match_filter_whitelist(KEX_DEFAULT_PK_ALG, all_key);
197: def_sig = match_filter_whitelist(SSH_ALLOWED_CA_SIGALGS, all_sig);
1.340 djm 198: #define ASSEMBLE(what, defaults, all) \
199: do { \
200: if ((r = kex_assemble_names(&o->what, defaults, all)) != 0) \
201: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
202: } while (0)
1.358 dtucker 203: ASSEMBLE(ciphers, def_cipher, all_cipher);
204: ASSEMBLE(macs, def_mac, all_mac);
205: ASSEMBLE(kex_algorithms, def_kex, all_kex);
206: ASSEMBLE(hostkeyalgorithms, def_key, all_key);
207: ASSEMBLE(hostbased_key_types, def_key, all_key);
208: ASSEMBLE(pubkey_key_types, def_key, all_key);
209: ASSEMBLE(ca_sign_algorithms, def_sig, all_sig);
1.340 djm 210: #undef ASSEMBLE
1.335 djm 211: free(all_cipher);
212: free(all_mac);
213: free(all_kex);
214: free(all_key);
1.341 djm 215: free(all_sig);
1.358 dtucker 216: free(def_cipher);
217: free(def_mac);
218: free(def_kex);
219: free(def_key);
220: free(def_sig);
1.282 djm 221: }
222:
1.314 djm 223: static void
1.344 djm 224: array_append2(const char *file, const int line, const char *directive,
225: char ***array, int **iarray, u_int *lp, const char *s, int i)
1.314 djm 226: {
227:
228: if (*lp >= INT_MAX)
229: fatal("%s line %d: Too many %s entries", file, line, directive);
230:
1.344 djm 231: if (iarray != NULL) {
232: *iarray = xrecallocarray(*iarray, *lp, *lp + 1,
233: sizeof(**iarray));
234: (*iarray)[*lp] = i;
235: }
236:
1.314 djm 237: *array = xrecallocarray(*array, *lp, *lp + 1, sizeof(**array));
238: (*array)[*lp] = xstrdup(s);
239: (*lp)++;
240: }
241:
1.344 djm 242: static void
243: array_append(const char *file, const int line, const char *directive,
244: char ***array, u_int *lp, const char *s)
245: {
246: array_append2(file, line, directive, array, NULL, lp, s, 0);
247: }
248:
1.314 djm 249: void
250: servconf_add_hostkey(const char *file, const int line,
1.344 djm 251: ServerOptions *options, const char *path, int userprovided)
1.314 djm 252: {
253: char *apath = derelativise_path(path);
254:
1.344 djm 255: array_append2(file, line, "HostKey",
256: &options->host_key_files, &options->host_key_file_userprovided,
257: &options->num_host_key_files, apath, userprovided);
1.314 djm 258: free(apath);
259: }
260:
261: void
262: servconf_add_hostcert(const char *file, const int line,
263: ServerOptions *options, const char *path)
264: {
265: char *apath = derelativise_path(path);
266:
267: array_append(file, line, "HostCertificate",
268: &options->host_cert_files, &options->num_host_cert_files, apath);
269: free(apath);
270: }
271:
1.34 markus 272: void
1.25 markus 273: fill_default_server_options(ServerOptions *options)
1.1 deraadt 274: {
1.314 djm 275: u_int i;
1.257 djm 276:
1.54 markus 277: if (options->num_host_key_files == 0) {
1.293 naddy 278: /* fill default hostkeys */
1.314 djm 279: servconf_add_hostkey("[default]", 0, options,
1.344 djm 280: _PATH_HOST_RSA_KEY_FILE, 0);
1.314 djm 281: servconf_add_hostkey("[default]", 0, options,
1.344 djm 282: _PATH_HOST_ECDSA_KEY_FILE, 0);
1.314 djm 283: servconf_add_hostkey("[default]", 0, options,
1.344 djm 284: _PATH_HOST_ED25519_KEY_FILE, 0);
1.326 markus 285: #ifdef WITH_XMSS
1.325 markus 286: servconf_add_hostkey("[default]", 0, options,
1.344 djm 287: _PATH_HOST_XMSS_KEY_FILE, 0);
1.326 markus 288: #endif /* WITH_XMSS */
1.54 markus 289: }
1.203 djm 290: /* No certificates by default */
1.29 markus 291: if (options->num_ports == 0)
292: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.266 dtucker 293: if (options->address_family == -1)
294: options->address_family = AF_UNSPEC;
1.29 markus 295: if (options->listen_addrs == NULL)
1.315 djm 296: add_listen_addr(options, NULL, NULL, 0);
1.36 markus 297: if (options->pid_file == NULL)
1.257 djm 298: options->pid_file = xstrdup(_PATH_SSH_DAEMON_PID_FILE);
1.25 markus 299: if (options->login_grace_time == -1)
1.115 stevesk 300: options->login_grace_time = 120;
1.67 markus 301: if (options->permit_root_login == PERMIT_NOT_SET)
1.279 chris 302: options->permit_root_login = PERMIT_NO_PASSWD;
1.25 markus 303: if (options->ignore_rhosts == -1)
1.30 markus 304: options->ignore_rhosts = 1;
1.25 markus 305: if (options->ignore_user_known_hosts == -1)
306: options->ignore_user_known_hosts = 0;
307: if (options->print_motd == -1)
308: options->print_motd = 1;
1.72 stevesk 309: if (options->print_lastlog == -1)
310: options->print_lastlog = 1;
1.25 markus 311: if (options->x11_forwarding == -1)
1.30 markus 312: options->x11_forwarding = 0;
1.25 markus 313: if (options->x11_display_offset == -1)
1.30 markus 314: options->x11_display_offset = 10;
1.99 stevesk 315: if (options->x11_use_localhost == -1)
316: options->x11_use_localhost = 1;
1.42 markus 317: if (options->xauth_location == NULL)
1.257 djm 318: options->xauth_location = xstrdup(_PATH_XAUTH);
1.244 djm 319: if (options->permit_tty == -1)
320: options->permit_tty = 1;
1.250 djm 321: if (options->permit_user_rc == -1)
322: options->permit_user_rc = 1;
1.25 markus 323: if (options->strict_modes == -1)
324: options->strict_modes = 1;
1.129 markus 325: if (options->tcp_keep_alive == -1)
326: options->tcp_keep_alive = 1;
1.101 markus 327: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
1.25 markus 328: options->log_facility = SYSLOG_FACILITY_AUTH;
1.101 markus 329: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.58 markus 330: options->log_level = SYSLOG_LEVEL_INFO;
1.75 markus 331: if (options->hostbased_authentication == -1)
332: options->hostbased_authentication = 0;
333: if (options->hostbased_uses_name_from_packet_only == -1)
334: options->hostbased_uses_name_from_packet_only = 0;
1.54 markus 335: if (options->pubkey_authentication == -1)
336: options->pubkey_authentication = 1;
1.354 djm 337: if (options->pubkey_auth_options == -1)
338: options->pubkey_auth_options = 0;
1.25 markus 339: if (options->kerberos_authentication == -1)
1.107 markus 340: options->kerberos_authentication = 0;
1.25 markus 341: if (options->kerberos_or_local_passwd == -1)
342: options->kerberos_or_local_passwd = 1;
343: if (options->kerberos_ticket_cleanup == -1)
344: options->kerberos_ticket_cleanup = 1;
1.130 jakob 345: if (options->kerberos_get_afs_token == -1)
346: options->kerberos_get_afs_token = 0;
1.125 markus 347: if (options->gss_authentication == -1)
348: options->gss_authentication = 0;
349: if (options->gss_cleanup_creds == -1)
350: options->gss_cleanup_creds = 1;
1.271 djm 351: if (options->gss_strict_acceptor == -1)
1.302 djm 352: options->gss_strict_acceptor = 1;
1.25 markus 353: if (options->password_authentication == -1)
354: options->password_authentication = 1;
1.52 markus 355: if (options->kbd_interactive_authentication == -1)
356: options->kbd_interactive_authentication = 0;
1.80 markus 357: if (options->challenge_response_authentication == -1)
358: options->challenge_response_authentication = 1;
1.25 markus 359: if (options->permit_empty_passwd == -1)
1.30 markus 360: options->permit_empty_passwd = 0;
1.334 djm 361: if (options->permit_user_env == -1) {
1.113 markus 362: options->permit_user_env = 0;
1.334 djm 363: options->permit_user_env_whitelist = NULL;
364: }
1.111 markus 365: if (options->compression == -1)
1.359 ! dtucker 366: #ifdef WITH_ZLIB
1.337 sf 367: options->compression = COMP_DELAYED;
1.359 ! dtucker 368: #else
! 369: options->compression = COMP_NONE;
! 370: #endif
! 371:
1.235 dtucker 372: if (options->rekey_limit == -1)
373: options->rekey_limit = 0;
374: if (options->rekey_interval == -1)
375: options->rekey_interval = 0;
1.53 markus 376: if (options->allow_tcp_forwarding == -1)
1.233 djm 377: options->allow_tcp_forwarding = FORWARD_ALLOW;
1.251 millert 378: if (options->allow_streamlocal_forwarding == -1)
379: options->allow_streamlocal_forwarding = FORWARD_ALLOW;
1.178 pyr 380: if (options->allow_agent_forwarding == -1)
381: options->allow_agent_forwarding = 1;
1.251 millert 382: if (options->fwd_opts.gateway_ports == -1)
383: options->fwd_opts.gateway_ports = 0;
1.46 markus 384: if (options->max_startups == -1)
1.234 dtucker 385: options->max_startups = 100;
1.50 markus 386: if (options->max_startups_rate == -1)
1.234 dtucker 387: options->max_startups_rate = 30; /* 30% */
1.50 markus 388: if (options->max_startups_begin == -1)
1.234 dtucker 389: options->max_startups_begin = 10;
1.133 dtucker 390: if (options->max_authtries == -1)
391: options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
1.180 djm 392: if (options->max_sessions == -1)
393: options->max_sessions = DEFAULT_SESSIONS_MAX;
1.122 markus 394: if (options->use_dns == -1)
1.260 deraadt 395: options->use_dns = 0;
1.77 beck 396: if (options->client_alive_interval == -1)
1.95 deraadt 397: options->client_alive_interval = 0;
1.77 beck 398: if (options->client_alive_count_max == -1)
399: options->client_alive_count_max = 3;
1.219 djm 400: if (options->num_authkeys_files == 0) {
1.314 djm 401: array_append("[default]", 0, "AuthorizedKeysFiles",
402: &options->authorized_keys_files,
403: &options->num_authkeys_files,
404: _PATH_SSH_USER_PERMITTED_KEYS);
405: array_append("[default]", 0, "AuthorizedKeysFiles",
406: &options->authorized_keys_files,
407: &options->num_authkeys_files,
408: _PATH_SSH_USER_PERMITTED_KEYS2);
1.219 djm 409: }
1.145 reyk 410: if (options->permit_tun == -1)
1.146 reyk 411: options->permit_tun = SSH_TUNMODE_NO;
1.213 djm 412: if (options->ip_qos_interactive == -1)
1.327 job 413: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.213 djm 414: if (options->ip_qos_bulk == -1)
1.327 job 415: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.225 djm 416: if (options->version_addendum == NULL)
417: options->version_addendum = xstrdup("");
1.251 millert 418: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
419: options->fwd_opts.streamlocal_bind_mask = 0177;
420: if (options->fwd_opts.streamlocal_bind_unlink == -1)
421: options->fwd_opts.streamlocal_bind_unlink = 0;
1.256 djm 422: if (options->fingerprint_hash == -1)
423: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.301 djm 424: if (options->disable_forwarding == -1)
425: options->disable_forwarding = 0;
1.309 djm 426: if (options->expose_userauth_info == -1)
427: options->expose_userauth_info = 0;
1.355 djm 428: if (options->sk_provider == NULL)
429: options->sk_provider = xstrdup("internal");
1.277 djm 430:
1.282 djm 431: assemble_algorithms(options);
1.277 djm 432:
1.285 djm 433: /* Turn privilege separation and sandboxing on by default */
1.102 provos 434: if (use_privsep == -1)
1.285 djm 435: use_privsep = PRIVSEP_ON;
1.257 djm 436:
437: #define CLEAR_ON_NONE(v) \
438: do { \
439: if (option_clear_or_none(v)) { \
440: free(v); \
441: v = NULL; \
442: } \
443: } while(0)
444: CLEAR_ON_NONE(options->pid_file);
445: CLEAR_ON_NONE(options->xauth_location);
446: CLEAR_ON_NONE(options->banner);
447: CLEAR_ON_NONE(options->trusted_user_ca_keys);
448: CLEAR_ON_NONE(options->revoked_keys_file);
1.355 djm 449: CLEAR_ON_NONE(options->sk_provider);
1.267 djm 450: CLEAR_ON_NONE(options->authorized_principals_file);
1.283 djm 451: CLEAR_ON_NONE(options->adm_forced_command);
452: CLEAR_ON_NONE(options->chroot_directory);
1.316 djm 453: CLEAR_ON_NONE(options->routing_domain);
1.357 djm 454: CLEAR_ON_NONE(options->host_key_agent);
1.257 djm 455: for (i = 0; i < options->num_host_key_files; i++)
456: CLEAR_ON_NONE(options->host_key_files[i]);
457: for (i = 0; i < options->num_host_cert_files; i++)
458: CLEAR_ON_NONE(options->host_cert_files[i]);
459: #undef CLEAR_ON_NONE
1.291 djm 460:
461: /* Similar handling for AuthenticationMethods=any */
462: if (options->num_auth_methods == 1 &&
463: strcmp(options->auth_methods[0], "any") == 0) {
464: free(options->auth_methods[0]);
465: options->auth_methods[0] = NULL;
466: options->num_auth_methods = 0;
467: }
1.1 deraadt 468: }
469:
470: /* Keyword tokens. */
1.25 markus 471: typedef enum {
472: sBadOption, /* == unknown option */
1.293 naddy 473: sPort, sHostKeyFile, sLoginGraceTime,
474: sPermitRootLogin, sLogFacility, sLogLevel,
1.25 markus 475: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.323 dtucker 476: sKerberosGetAFSToken, sChallengeResponseAuthentication,
1.138 djm 477: sPasswordAuthentication, sKbdInteractiveAuthentication,
478: sListenAddress, sAddressFamily,
1.72 stevesk 479: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
1.99 stevesk 480: sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
1.244 djm 481: sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
1.294 djm 482: sPermitUserEnvironment, sAllowTcpForwarding, sCompression,
1.235 dtucker 483: sRekeyLimit, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.293 naddy 484: sIgnoreUserKnownHosts, sCiphers, sMacs, sPidFile,
1.258 djm 485: sGatewayPorts, sPubkeyAuthentication, sPubkeyAcceptedKeyTypes,
486: sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
1.122 markus 487: sBanner, sUseDNS, sHostbasedAuthentication,
1.258 djm 488: sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
1.276 markus 489: sHostKeyAlgorithms,
1.258 djm 490: sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
1.271 djm 491: sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
1.332 djm 492: sAcceptEnv, sSetEnv, sPermitTunnel,
1.330 djm 493: sMatch, sPermitOpen, sPermitListen, sForceCommand, sChrootDirectory,
1.200 dtucker 494: sUsePrivilegeSeparation, sAllowAgentForwarding,
1.249 djm 495: sHostCertificate,
1.208 djm 496: sRevokedKeys, sTrustedUserCAKeys, sAuthorizedPrincipalsFile,
1.270 djm 497: sAuthorizedPrincipalsCommand, sAuthorizedPrincipalsCommandUser,
1.341 djm 498: sKexAlgorithms, sCASignatureAlgorithms, sIPQoS, sVersionAddendum,
1.231 djm 499: sAuthorizedKeysCommand, sAuthorizedKeysCommandUser,
1.250 djm 500: sAuthenticationMethods, sHostKeyAgent, sPermitUserRC,
1.251 millert 501: sStreamLocalBindMask, sStreamLocalBindUnlink,
1.301 djm 502: sAllowStreamLocalForwarding, sFingerprintHash, sDisableForwarding,
1.355 djm 503: sExposeAuthInfo, sRDomain, sPubkeyAuthOptions, sSecurityKeyProvider,
1.295 djm 504: sDeprecated, sIgnore, sUnsupported
1.1 deraadt 505: } ServerOpCodes;
506:
1.153 dtucker 507: #define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */
508: #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
509: #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
510:
1.1 deraadt 511: /* Textual representation of the tokens. */
1.25 markus 512: static struct {
513: const char *name;
514: ServerOpCodes opcode;
1.153 dtucker 515: u_int flags;
1.25 markus 516: } keywords[] = {
1.153 dtucker 517: { "port", sPort, SSHCFG_GLOBAL },
518: { "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
519: { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
1.240 markus 520: { "hostkeyagent", sHostKeyAgent, SSHCFG_GLOBAL },
1.153 dtucker 521: { "pidfile", sPidFile, SSHCFG_GLOBAL },
1.293 naddy 522: { "serverkeybits", sDeprecated, SSHCFG_GLOBAL },
1.153 dtucker 523: { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
1.293 naddy 524: { "keyregenerationinterval", sDeprecated, SSHCFG_GLOBAL },
1.175 dtucker 525: { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
1.153 dtucker 526: { "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
1.308 djm 527: { "loglevel", sLogLevel, SSHCFG_ALL },
1.153 dtucker 528: { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
1.293 naddy 529: { "rhostsrsaauthentication", sDeprecated, SSHCFG_ALL },
1.168 dtucker 530: { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
1.209 djm 531: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
1.258 djm 532: { "hostbasedacceptedkeytypes", sHostbasedAcceptedKeyTypes, SSHCFG_ALL },
1.276 markus 533: { "hostkeyalgorithms", sHostKeyAlgorithms, SSHCFG_GLOBAL },
1.293 naddy 534: { "rsaauthentication", sDeprecated, SSHCFG_ALL },
1.168 dtucker 535: { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
1.258 djm 536: { "pubkeyacceptedkeytypes", sPubkeyAcceptedKeyTypes, SSHCFG_ALL },
1.354 djm 537: { "pubkeyauthoptions", sPubkeyAuthOptions, SSHCFG_ALL },
1.153 dtucker 538: { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
1.123 markus 539: #ifdef KRB5
1.168 dtucker 540: { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
1.153 dtucker 541: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
542: { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
543: { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
1.121 jakob 544: #else
1.168 dtucker 545: { "kerberosauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 546: { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
547: { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
548: { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
1.126 markus 549: #endif
1.153 dtucker 550: { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
551: { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 552: #ifdef GSSAPI
1.168 dtucker 553: { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
1.153 dtucker 554: { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
1.271 djm 555: { "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
1.125 markus 556: #else
1.168 dtucker 557: { "gssapiauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 558: { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
1.271 djm 559: { "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 560: #endif
1.168 dtucker 561: { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
562: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
1.170 dtucker 563: { "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
1.153 dtucker 564: { "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */
565: { "checkmail", sDeprecated, SSHCFG_GLOBAL },
566: { "listenaddress", sListenAddress, SSHCFG_GLOBAL },
567: { "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
568: { "printmotd", sPrintMotd, SSHCFG_GLOBAL },
569: { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
570: { "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL },
571: { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
1.157 dtucker 572: { "x11forwarding", sX11Forwarding, SSHCFG_ALL },
573: { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
574: { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
1.153 dtucker 575: { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
576: { "strictmodes", sStrictModes, SSHCFG_GLOBAL },
1.188 djm 577: { "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
1.153 dtucker 578: { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
1.294 djm 579: { "uselogin", sDeprecated, SSHCFG_GLOBAL },
1.153 dtucker 580: { "compression", sCompression, SSHCFG_GLOBAL },
1.235 dtucker 581: { "rekeylimit", sRekeyLimit, SSHCFG_ALL },
1.153 dtucker 582: { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
583: { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
584: { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
1.178 pyr 585: { "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
1.227 markus 586: { "allowusers", sAllowUsers, SSHCFG_ALL },
587: { "denyusers", sDenyUsers, SSHCFG_ALL },
588: { "allowgroups", sAllowGroups, SSHCFG_ALL },
589: { "denygroups", sDenyGroups, SSHCFG_ALL },
1.153 dtucker 590: { "ciphers", sCiphers, SSHCFG_GLOBAL },
591: { "macs", sMacs, SSHCFG_GLOBAL },
1.295 djm 592: { "protocol", sIgnore, SSHCFG_GLOBAL },
1.153 dtucker 593: { "gatewayports", sGatewayPorts, SSHCFG_ALL },
594: { "subsystem", sSubsystem, SSHCFG_GLOBAL },
595: { "maxstartups", sMaxStartups, 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 },
1.213 djm 622: { "ipqos", sIPQoS, SSHCFG_ALL },
1.231 djm 623: { "authorizedkeyscommand", sAuthorizedKeysCommand, SSHCFG_ALL },
624: { "authorizedkeyscommanduser", sAuthorizedKeysCommandUser, SSHCFG_ALL },
1.270 djm 625: { "authorizedprincipalscommand", sAuthorizedPrincipalsCommand, SSHCFG_ALL },
626: { "authorizedprincipalscommanduser", sAuthorizedPrincipalsCommandUser, SSHCFG_ALL },
1.225 djm 627: { "versionaddendum", sVersionAddendum, SSHCFG_GLOBAL },
1.232 djm 628: { "authenticationmethods", sAuthenticationMethods, SSHCFG_ALL },
1.251 millert 629: { "streamlocalbindmask", sStreamLocalBindMask, SSHCFG_ALL },
630: { "streamlocalbindunlink", sStreamLocalBindUnlink, SSHCFG_ALL },
631: { "allowstreamlocalforwarding", sAllowStreamLocalForwarding, SSHCFG_ALL },
1.256 djm 632: { "fingerprinthash", sFingerprintHash, SSHCFG_GLOBAL },
1.301 djm 633: { "disableforwarding", sDisableForwarding, SSHCFG_ALL },
1.309 djm 634: { "exposeauthinfo", sExposeAuthInfo, SSHCFG_ALL },
1.316 djm 635: { "rdomain", sRDomain, SSHCFG_ALL },
1.342 djm 636: { "casignaturealgorithms", sCASignatureAlgorithms, SSHCFG_ALL },
1.355 djm 637: { "securitykeyprovider", sSecurityKeyProvider, SSHCFG_GLOBAL },
1.153 dtucker 638: { NULL, sBadOption, 0 }
1.1 deraadt 639: };
640:
1.182 dtucker 641: static struct {
642: int val;
643: char *text;
644: } tunmode_desc[] = {
645: { SSH_TUNMODE_NO, "no" },
646: { SSH_TUNMODE_POINTOPOINT, "point-to-point" },
647: { SSH_TUNMODE_ETHERNET, "ethernet" },
648: { SSH_TUNMODE_YES, "yes" },
649: { -1, NULL }
650: };
651:
1.329 djm 652: /* Returns an opcode name from its number */
653:
654: static const char *
655: lookup_opcode_name(ServerOpCodes code)
656: {
657: u_int i;
658:
659: for (i = 0; keywords[i].name != NULL; i++)
660: if (keywords[i].opcode == code)
661: return(keywords[i].name);
662: return "UNKNOWN";
663: }
664:
665:
1.27 markus 666: /*
1.73 stevesk 667: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 668: */
1.1 deraadt 669:
1.34 markus 670: static ServerOpCodes
1.25 markus 671: parse_token(const char *cp, const char *filename,
1.153 dtucker 672: int linenum, u_int *flags)
1.1 deraadt 673: {
1.55 markus 674: u_int i;
1.1 deraadt 675:
1.25 markus 676: for (i = 0; keywords[i].name; i++)
1.153 dtucker 677: if (strcasecmp(cp, keywords[i].name) == 0) {
678: *flags = keywords[i].flags;
1.25 markus 679: return keywords[i].opcode;
1.153 dtucker 680: }
1.25 markus 681:
1.78 stevesk 682: error("%s: line %d: Bad configuration option: %s",
683: filename, linenum, cp);
1.25 markus 684: return sBadOption;
1.1 deraadt 685: }
686:
1.202 djm 687: char *
688: derelativise_path(const char *path)
689: {
1.259 deraadt 690: char *expanded, *ret, cwd[PATH_MAX];
1.202 djm 691:
1.257 djm 692: if (strcasecmp(path, "none") == 0)
693: return xstrdup("none");
1.202 djm 694: expanded = tilde_expand_filename(path, getuid());
1.343 djm 695: if (path_absolute(expanded))
1.202 djm 696: return expanded;
1.207 djm 697: if (getcwd(cwd, sizeof(cwd)) == NULL)
1.202 djm 698: fatal("%s: getcwd: %s", __func__, strerror(errno));
699: xasprintf(&ret, "%s/%s", cwd, expanded);
1.239 djm 700: free(expanded);
1.202 djm 701: return ret;
702: }
703:
1.84 itojun 704: static void
1.315 djm 705: add_listen_addr(ServerOptions *options, const char *addr,
706: const char *rdomain, int port)
1.74 stevesk 707: {
1.142 djm 708: u_int i;
1.74 stevesk 709:
1.315 djm 710: if (port > 0)
711: add_one_listen_addr(options, addr, rdomain, port);
712: else {
713: for (i = 0; i < options->num_ports; i++) {
714: add_one_listen_addr(options, addr, rdomain,
715: options->ports[i]);
716: }
717: }
1.74 stevesk 718: }
719:
1.84 itojun 720: static void
1.315 djm 721: add_one_listen_addr(ServerOptions *options, const char *addr,
722: const char *rdomain, int port)
1.29 markus 723: {
724: struct addrinfo hints, *ai, *aitop;
725: char strport[NI_MAXSERV];
726: int gaierr;
1.315 djm 727: u_int i;
728:
729: /* Find listen_addrs entry for this rdomain */
730: for (i = 0; i < options->num_listen_addrs; i++) {
731: if (rdomain == NULL && options->listen_addrs[i].rdomain == NULL)
732: break;
733: if (rdomain == NULL || options->listen_addrs[i].rdomain == NULL)
734: continue;
735: if (strcmp(rdomain, options->listen_addrs[i].rdomain) == 0)
736: break;
737: }
738: if (i >= options->num_listen_addrs) {
739: /* No entry for this rdomain; allocate one */
740: if (i >= INT_MAX)
741: fatal("%s: too many listen addresses", __func__);
742: options->listen_addrs = xrecallocarray(options->listen_addrs,
743: options->num_listen_addrs, options->num_listen_addrs + 1,
744: sizeof(*options->listen_addrs));
745: i = options->num_listen_addrs++;
746: if (rdomain != NULL)
747: options->listen_addrs[i].rdomain = xstrdup(rdomain);
748: }
749: /* options->listen_addrs[i] points to the addresses for this rdomain */
1.29 markus 750:
1.74 stevesk 751: memset(&hints, 0, sizeof(hints));
1.138 djm 752: hints.ai_family = options->address_family;
1.74 stevesk 753: hints.ai_socktype = SOCK_STREAM;
754: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
1.194 djm 755: snprintf(strport, sizeof strport, "%d", port);
1.74 stevesk 756: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
757: fatal("bad addr or host: %s (%s)",
758: addr ? addr : "<NULL>",
1.173 dtucker 759: ssh_gai_strerror(gaierr));
1.74 stevesk 760: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
761: ;
1.315 djm 762: ai->ai_next = options->listen_addrs[i].addrs;
763: options->listen_addrs[i].addrs = aitop;
764: }
765:
766: /* Returns nonzero if the routing domain name is valid */
767: static int
768: valid_rdomain(const char *name)
769: {
770: const char *errstr;
771: long long num;
772: struct rt_tableinfo info;
773: int mib[6];
774: size_t miblen = sizeof(mib);
775:
776: if (name == NULL)
777: return 1;
778:
779: num = strtonum(name, 0, 255, &errstr);
780: if (errstr != NULL)
781: return 0;
782:
783: /* Check whether the table actually exists */
784: memset(mib, 0, sizeof(mib));
785: mib[0] = CTL_NET;
786: mib[1] = PF_ROUTE;
787: mib[4] = NET_RT_TABLE;
788: mib[5] = (int)num;
789: if (sysctl(mib, 6, &info, &miblen, NULL, 0) == -1)
790: return 0;
791:
792: return 1;
1.29 markus 793: }
794:
1.266 dtucker 795: /*
796: * Queue a ListenAddress to be processed once we have all of the Ports
797: * and AddressFamily options.
798: */
799: static void
1.315 djm 800: queue_listen_addr(ServerOptions *options, const char *addr,
801: const char *rdomain, int port)
1.266 dtucker 802: {
1.315 djm 803: struct queued_listenaddr *qla;
804:
805: options->queued_listen_addrs = xrecallocarray(
806: options->queued_listen_addrs,
807: options->num_queued_listens, options->num_queued_listens + 1,
808: sizeof(*options->queued_listen_addrs));
809: qla = &options->queued_listen_addrs[options->num_queued_listens++];
810: qla->addr = xstrdup(addr);
811: qla->port = port;
812: qla->rdomain = rdomain == NULL ? NULL : xstrdup(rdomain);
1.266 dtucker 813: }
814:
815: /*
816: * Process queued (text) ListenAddress entries.
817: */
818: static void
819: process_queued_listen_addrs(ServerOptions *options)
820: {
821: u_int i;
1.315 djm 822: struct queued_listenaddr *qla;
1.266 dtucker 823:
824: if (options->num_ports == 0)
825: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
826: if (options->address_family == -1)
827: options->address_family = AF_UNSPEC;
828:
829: for (i = 0; i < options->num_queued_listens; i++) {
1.315 djm 830: qla = &options->queued_listen_addrs[i];
831: add_listen_addr(options, qla->addr, qla->rdomain, qla->port);
832: free(qla->addr);
833: free(qla->rdomain);
1.266 dtucker 834: }
835: free(options->queued_listen_addrs);
836: options->queued_listen_addrs = NULL;
837: options->num_queued_listens = 0;
838: }
839:
1.310 djm 840: /*
1.329 djm 841: * Inform channels layer of permitopen options for a single forwarding
842: * direction (local/remote).
1.310 djm 843: */
1.329 djm 844: static void
845: process_permitopen_list(struct ssh *ssh, ServerOpCodes opcode,
846: char **opens, u_int num_opens)
1.310 djm 847: {
848: u_int i;
849: int port;
1.347 dtucker 850: char *host, *arg, *oarg, ch;
1.329 djm 851: int where = opcode == sPermitOpen ? FORWARD_LOCAL : FORWARD_REMOTE;
852: const char *what = lookup_opcode_name(opcode);
1.310 djm 853:
1.329 djm 854: channel_clear_permission(ssh, FORWARD_ADM, where);
855: if (num_opens == 0)
1.310 djm 856: return; /* permit any */
857:
858: /* handle keywords: "any" / "none" */
1.329 djm 859: if (num_opens == 1 && strcmp(opens[0], "any") == 0)
1.310 djm 860: return;
1.329 djm 861: if (num_opens == 1 && strcmp(opens[0], "none") == 0) {
862: channel_disable_admin(ssh, where);
1.310 djm 863: return;
864: }
865: /* Otherwise treat it as a list of permitted host:port */
1.329 djm 866: for (i = 0; i < num_opens; i++) {
867: oarg = arg = xstrdup(opens[i]);
1.348 dtucker 868: ch = '\0';
1.347 dtucker 869: host = hpdelim2(&arg, &ch);
870: if (host == NULL || ch == '/')
1.329 djm 871: fatal("%s: missing host in %s", __func__, what);
1.310 djm 872: host = cleanhostname(host);
873: if (arg == NULL || ((port = permitopen_port(arg)) < 0))
1.329 djm 874: fatal("%s: bad port number in %s", __func__, what);
1.310 djm 875: /* Send it to channels layer */
1.329 djm 876: channel_add_permission(ssh, FORWARD_ADM,
877: where, host, port);
1.310 djm 878: free(oarg);
879: }
880: }
881:
1.329 djm 882: /*
883: * Inform channels layer of permitopen options from configuration.
884: */
885: void
886: process_permitopen(struct ssh *ssh, ServerOptions *options)
887: {
888: process_permitopen_list(ssh, sPermitOpen,
889: options->permitted_opens, options->num_permitted_opens);
1.330 djm 890: process_permitopen_list(ssh, sPermitListen,
891: options->permitted_listens,
892: options->num_permitted_listens);
1.329 djm 893: }
894:
1.226 dtucker 895: struct connection_info *
1.346 djm 896: get_connection_info(struct ssh *ssh, int populate, int use_dns)
1.226 dtucker 897: {
898: static struct connection_info ci;
899:
1.346 djm 900: if (ssh == NULL || !populate)
1.226 dtucker 901: return &ci;
1.286 djm 902: ci.host = auth_get_canonical_hostname(ssh, use_dns);
903: ci.address = ssh_remote_ipaddr(ssh);
904: ci.laddress = ssh_local_ipaddr(ssh);
905: ci.lport = ssh_local_port(ssh);
1.317 djm 906: ci.rdomain = ssh_packet_rdomain_in(ssh);
1.226 dtucker 907: return &ci;
908: }
909:
1.153 dtucker 910: /*
911: * The strategy for the Match blocks is that the config file is parsed twice.
912: *
913: * The first time is at startup. activep is initialized to 1 and the
914: * directives in the global context are processed and acted on. Hitting a
915: * Match directive unsets activep and the directives inside the block are
916: * checked for syntax only.
917: *
918: * The second time is after a connection has been established but before
919: * authentication. activep is initialized to 2 and global config directives
920: * are ignored since they have already been processed. If the criteria in a
921: * Match block is met, activep is set and the subsequent directives
922: * processed and actioned until EOF or another Match block unsets it. Any
923: * options set are copied into the main server config.
924: *
925: * Potential additions/improvements:
1.295 djm 926: * - Add Match support for pre-kex directives, eg. Ciphers.
1.153 dtucker 927: *
928: * - Add a Tag directive (idea from David Leonard) ala pf, eg:
929: * Match Address 192.168.0.*
930: * Tag trusted
931: * Match Group wheel
932: * Tag trusted
933: * Match Tag trusted
934: * AllowTcpForwarding yes
935: * GatewayPorts clientspecified
936: * [...]
937: *
938: * - Add a PermittedChannelRequests directive
939: * Match Group shell
940: * PermittedChannelRequests session,forwarded-tcpip
941: */
942:
943: static int
1.165 dtucker 944: match_cfg_line_group(const char *grps, int line, const char *user)
945: {
946: int result = 0;
947: struct passwd *pw;
948:
949: if (user == NULL)
950: goto out;
951:
952: if ((pw = getpwnam(user)) == NULL) {
953: debug("Can't match group at line %d because user %.100s does "
954: "not exist", line, user);
955: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
956: debug("Can't Match group because user %.100s not in any group "
957: "at line %d", user, line);
1.186 djm 958: } else if (ga_match_pattern_list(grps) != 1) {
959: debug("user %.100s does not match group list %.100s at line %d",
960: user, grps, line);
1.165 dtucker 961: } else {
1.186 djm 962: debug("user %.100s matched group list %.100s at line %d", user,
963: grps, line);
1.165 dtucker 964: result = 1;
965: }
966: out:
967: ga_free();
968: return result;
969: }
970:
1.319 dtucker 971: static void
972: match_test_missing_fatal(const char *criteria, const char *attrib)
973: {
974: fatal("'Match %s' in configuration but '%s' not in connection "
975: "test specification.", criteria, attrib);
976: }
977:
1.226 dtucker 978: /*
1.230 dtucker 979: * All of the attributes on a single Match line are ANDed together, so we need
1.242 dtucker 980: * to check every attribute and set the result to zero if any attribute does
1.230 dtucker 981: * not match.
1.226 dtucker 982: */
1.165 dtucker 983: static int
1.226 dtucker 984: match_cfg_line(char **condition, int line, struct connection_info *ci)
1.153 dtucker 985: {
1.243 dtucker 986: int result = 1, attributes = 0, port;
1.153 dtucker 987: char *arg, *attrib, *cp = *condition;
988:
1.226 dtucker 989: if (ci == NULL)
1.153 dtucker 990: debug3("checking syntax for 'Match %s'", cp);
991: else
1.226 dtucker 992: debug3("checking match for '%s' user %s host %s addr %s "
993: "laddr %s lport %d", cp, ci->user ? ci->user : "(null)",
994: ci->host ? ci->host : "(null)",
995: ci->address ? ci->address : "(null)",
996: ci->laddress ? ci->laddress : "(null)", ci->lport);
1.153 dtucker 997:
998: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
1.243 dtucker 999: attributes++;
1000: if (strcasecmp(attrib, "all") == 0) {
1001: if (attributes != 1 ||
1002: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
1003: error("'all' cannot be combined with other "
1004: "Match attributes");
1005: return -1;
1006: }
1007: *condition = cp;
1008: return 1;
1009: }
1.153 dtucker 1010: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
1011: error("Missing Match criteria for %s", attrib);
1012: return -1;
1013: }
1014: if (strcasecmp(attrib, "user") == 0) {
1.351 dtucker 1015: if (ci == NULL || (ci->test && ci->user == NULL)) {
1.153 dtucker 1016: result = 0;
1017: continue;
1018: }
1.319 dtucker 1019: if (ci->user == NULL)
1020: match_test_missing_fatal("User", "user");
1.349 dtucker 1021: if (match_usergroup_pattern_list(ci->user, arg) != 1)
1.153 dtucker 1022: result = 0;
1023: else
1024: debug("user %.100s matched 'User %.100s' at "
1.226 dtucker 1025: "line %d", ci->user, arg, line);
1.165 dtucker 1026: } else if (strcasecmp(attrib, "group") == 0) {
1.351 dtucker 1027: if (ci == NULL || (ci->test && ci->user == NULL)) {
1.226 dtucker 1028: result = 0;
1029: continue;
1030: }
1.319 dtucker 1031: if (ci->user == NULL)
1032: match_test_missing_fatal("Group", "user");
1.226 dtucker 1033: switch (match_cfg_line_group(arg, line, ci->user)) {
1.165 dtucker 1034: case -1:
1035: return -1;
1036: case 0:
1037: result = 0;
1038: }
1.153 dtucker 1039: } else if (strcasecmp(attrib, "host") == 0) {
1.351 dtucker 1040: if (ci == NULL || (ci->test && ci->host == NULL)) {
1.153 dtucker 1041: result = 0;
1042: continue;
1043: }
1.319 dtucker 1044: if (ci->host == NULL)
1045: match_test_missing_fatal("Host", "host");
1.269 djm 1046: if (match_hostname(ci->host, arg) != 1)
1.153 dtucker 1047: result = 0;
1048: else
1049: debug("connection from %.100s matched 'Host "
1.226 dtucker 1050: "%.100s' at line %d", ci->host, arg, line);
1.153 dtucker 1051: } else if (strcasecmp(attrib, "address") == 0) {
1.351 dtucker 1052: if (ci == NULL || (ci->test && ci->address == NULL)) {
1.226 dtucker 1053: result = 0;
1054: continue;
1055: }
1.319 dtucker 1056: if (ci->address == NULL)
1057: match_test_missing_fatal("Address", "addr");
1.226 dtucker 1058: switch (addr_match_list(ci->address, arg)) {
1.181 djm 1059: case 1:
1060: debug("connection from %.100s matched 'Address "
1.226 dtucker 1061: "%.100s' at line %d", ci->address, arg, line);
1.181 djm 1062: break;
1063: case 0:
1.183 djm 1064: case -1:
1.153 dtucker 1065: result = 0;
1.181 djm 1066: break;
1.183 djm 1067: case -2:
1.181 djm 1068: return -1;
1.153 dtucker 1069: }
1.226 dtucker 1070: } else if (strcasecmp(attrib, "localaddress") == 0){
1.351 dtucker 1071: if (ci == NULL || (ci->test && ci->laddress == NULL)) {
1.226 dtucker 1072: result = 0;
1073: continue;
1074: }
1.319 dtucker 1075: if (ci->laddress == NULL)
1076: match_test_missing_fatal("LocalAddress",
1077: "laddr");
1.226 dtucker 1078: switch (addr_match_list(ci->laddress, arg)) {
1079: case 1:
1080: debug("connection from %.100s matched "
1081: "'LocalAddress %.100s' at line %d",
1082: ci->laddress, arg, line);
1083: break;
1084: case 0:
1085: case -1:
1086: result = 0;
1087: break;
1088: case -2:
1089: return -1;
1090: }
1091: } else if (strcasecmp(attrib, "localport") == 0) {
1092: if ((port = a2port(arg)) == -1) {
1093: error("Invalid LocalPort '%s' on Match line",
1094: arg);
1095: return -1;
1096: }
1.351 dtucker 1097: if (ci == NULL || (ci->test && ci->lport == -1)) {
1.226 dtucker 1098: result = 0;
1099: continue;
1100: }
1.319 dtucker 1101: if (ci->lport == 0)
1102: match_test_missing_fatal("LocalPort", "lport");
1.226 dtucker 1103: /* TODO support port lists */
1104: if (port == ci->lport)
1105: debug("connection from %.100s matched "
1106: "'LocalPort %d' at line %d",
1107: ci->laddress, port, line);
1108: else
1109: result = 0;
1.317 djm 1110: } else if (strcasecmp(attrib, "rdomain") == 0) {
1.351 dtucker 1111: if (ci == NULL || (ci->test && ci->rdomain == NULL)) {
1.317 djm 1112: result = 0;
1113: continue;
1114: }
1.351 dtucker 1115: if (ci->rdomain == NULL)
1116: match_test_missing_fatal("RDomain", "rdomain");
1.317 djm 1117: if (match_pattern_list(ci->rdomain, arg, 0) != 1)
1118: result = 0;
1119: else
1120: debug("user %.100s matched 'RDomain %.100s' at "
1121: "line %d", ci->rdomain, arg, line);
1.153 dtucker 1122: } else {
1123: error("Unsupported Match attribute %s", attrib);
1124: return -1;
1125: }
1.243 dtucker 1126: }
1127: if (attributes == 0) {
1128: error("One or more attributes required for Match");
1129: return -1;
1.153 dtucker 1130: }
1.226 dtucker 1131: if (ci != NULL)
1.153 dtucker 1132: debug3("match %sfound", result ? "" : "not ");
1133: *condition = cp;
1134: return result;
1135: }
1136:
1.158 dtucker 1137: #define WHITESPACE " \t\r\n"
1138:
1.220 djm 1139: /* Multistate option parsing */
1140: struct multistate {
1141: char *key;
1142: int value;
1143: };
1.320 djm 1144: static const struct multistate multistate_flag[] = {
1145: { "yes", 1 },
1146: { "no", 0 },
1147: { NULL, -1 }
1148: };
1.220 djm 1149: static const struct multistate multistate_addressfamily[] = {
1150: { "inet", AF_INET },
1151: { "inet6", AF_INET6 },
1152: { "any", AF_UNSPEC },
1153: { NULL, -1 }
1154: };
1155: static const struct multistate multistate_permitrootlogin[] = {
1156: { "without-password", PERMIT_NO_PASSWD },
1.280 deraadt 1157: { "prohibit-password", PERMIT_NO_PASSWD },
1.220 djm 1158: { "forced-commands-only", PERMIT_FORCED_ONLY },
1159: { "yes", PERMIT_YES },
1160: { "no", PERMIT_NO },
1161: { NULL, -1 }
1162: };
1163: static const struct multistate multistate_compression[] = {
1.359 ! dtucker 1164: #ifdef WITH_ZLIB
1.337 sf 1165: { "yes", COMP_DELAYED },
1166: { "delayed", COMP_DELAYED },
1.359 ! dtucker 1167: #endif
1.220 djm 1168: { "no", COMP_NONE },
1169: { NULL, -1 }
1170: };
1171: static const struct multistate multistate_gatewayports[] = {
1172: { "clientspecified", 2 },
1173: { "yes", 1 },
1174: { "no", 0 },
1.222 djm 1175: { NULL, -1 }
1176: };
1.233 djm 1177: static const struct multistate multistate_tcpfwd[] = {
1178: { "yes", FORWARD_ALLOW },
1179: { "all", FORWARD_ALLOW },
1180: { "no", FORWARD_DENY },
1181: { "remote", FORWARD_REMOTE },
1182: { "local", FORWARD_LOCAL },
1183: { NULL, -1 }
1184: };
1.220 djm 1185:
1.94 markus 1186: int
1187: process_server_config_line(ServerOptions *options, char *line,
1.226 dtucker 1188: const char *filename, int linenum, int *activep,
1189: struct connection_info *connectinfo)
1.1 deraadt 1190: {
1.348 dtucker 1191: char ch, *cp, ***chararrayptr, **charptr, *arg, *arg2, *p;
1.237 dtucker 1192: int cmdline = 0, *intptr, value, value2, n, port;
1.174 dtucker 1193: SyslogFacility *log_facility_ptr;
1194: LogLevel *log_level_ptr;
1.25 markus 1195: ServerOpCodes opcode;
1.329 djm 1196: u_int i, *uintptr, uvalue, flags = 0;
1.151 djm 1197: size_t len;
1.237 dtucker 1198: long long val64;
1.220 djm 1199: const struct multistate *multistate_ptr;
1.322 dtucker 1200: const char *errstr;
1.303 djm 1201:
1202: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1203: if ((len = strlen(line)) == 0)
1204: return 0;
1205: for (len--; len > 0; len--) {
1206: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1207: break;
1208: line[len] = '\0';
1209: }
1.25 markus 1210:
1.94 markus 1211: cp = line;
1.148 dtucker 1212: if ((arg = strdelim(&cp)) == NULL)
1.147 djm 1213: return 0;
1.94 markus 1214: /* Ignore leading whitespace */
1215: if (*arg == '\0')
1216: arg = strdelim(&cp);
1217: if (!arg || !*arg || *arg == '#')
1218: return 0;
1219: intptr = NULL;
1220: charptr = NULL;
1.153 dtucker 1221: opcode = parse_token(arg, filename, linenum, &flags);
1222:
1223: if (activep == NULL) { /* We are processing a command line directive */
1224: cmdline = 1;
1225: activep = &cmdline;
1226: }
1227: if (*activep && opcode != sMatch)
1228: debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
1229: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
1.226 dtucker 1230: if (connectinfo == NULL) {
1.153 dtucker 1231: fatal("%s line %d: Directive '%s' is not allowed "
1232: "within a Match block", filename, linenum, arg);
1233: } else { /* this is a directive we have already processed */
1234: while (arg)
1235: arg = strdelim(&cp);
1236: return 0;
1237: }
1238: }
1239:
1.94 markus 1240: switch (opcode) {
1241: case sBadOption:
1242: return -1;
1243: case sPort:
1244: /* ignore ports from configfile if cmdline specifies ports */
1245: if (options->ports_from_cmdline)
1246: return 0;
1247: if (options->num_ports >= MAX_PORTS)
1248: fatal("%s line %d: too many ports.",
1249: filename, linenum);
1.48 provos 1250: arg = strdelim(&cp);
1.94 markus 1251: if (!arg || *arg == '\0')
1252: fatal("%s line %d: missing port number.",
1253: filename, linenum);
1254: options->ports[options->num_ports++] = a2port(arg);
1.194 djm 1255: if (options->ports[options->num_ports-1] <= 0)
1.94 markus 1256: fatal("%s line %d: Badly formatted port number.",
1257: filename, linenum);
1258: break;
1.29 markus 1259:
1.94 markus 1260: case sLoginGraceTime:
1261: intptr = &options->login_grace_time;
1.180 djm 1262: parse_time:
1.94 markus 1263: arg = strdelim(&cp);
1264: if (!arg || *arg == '\0')
1265: fatal("%s line %d: missing time value.",
1266: filename, linenum);
1267: if ((value = convtime(arg)) == -1)
1268: fatal("%s line %d: invalid time value.",
1269: filename, linenum);
1.268 djm 1270: if (*activep && *intptr == -1)
1.94 markus 1271: *intptr = value;
1272: break;
1273:
1274: case sListenAddress:
1275: arg = strdelim(&cp);
1.139 djm 1276: if (arg == NULL || *arg == '\0')
1277: fatal("%s line %d: missing address",
1.94 markus 1278: filename, linenum);
1.144 dtucker 1279: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
1280: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
1281: && strchr(p+1, ':') != NULL) {
1.315 djm 1282: port = 0;
1283: p = arg;
1284: } else {
1.347 dtucker 1285: arg2 = NULL;
1.348 dtucker 1286: ch = '\0';
1.347 dtucker 1287: p = hpdelim2(&arg, &ch);
1288: if (p == NULL || ch == '/')
1.315 djm 1289: fatal("%s line %d: bad address:port usage",
1290: filename, linenum);
1291: p = cleanhostname(p);
1292: if (arg == NULL)
1293: port = 0;
1294: else if ((port = a2port(arg)) <= 0)
1295: fatal("%s line %d: bad port number",
1296: filename, linenum);
1297: }
1298: /* Optional routing table */
1299: arg2 = NULL;
1300: if ((arg = strdelim(&cp)) != NULL) {
1301: if (strcmp(arg, "rdomain") != 0 ||
1302: (arg2 = strdelim(&cp)) == NULL)
1303: fatal("%s line %d: bad ListenAddress syntax",
1304: filename, linenum);
1305: if (!valid_rdomain(arg2))
1306: fatal("%s line %d: bad routing domain",
1307: filename, linenum);
1.144 dtucker 1308: }
1.139 djm 1309:
1.315 djm 1310: queue_listen_addr(options, p, arg2, port);
1.25 markus 1311:
1.138 djm 1312: break;
1313:
1314: case sAddressFamily:
1.220 djm 1315: intptr = &options->address_family;
1316: multistate_ptr = multistate_addressfamily;
1317: parse_multistate:
1.138 djm 1318: arg = strdelim(&cp);
1.141 markus 1319: if (!arg || *arg == '\0')
1.220 djm 1320: fatal("%s line %d: missing argument.",
1.141 markus 1321: filename, linenum);
1.220 djm 1322: value = -1;
1323: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1324: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1325: value = multistate_ptr[i].value;
1326: break;
1327: }
1328: }
1329: if (value == -1)
1330: fatal("%s line %d: unsupported option \"%s\".",
1.138 djm 1331: filename, linenum, arg);
1.220 djm 1332: if (*activep && *intptr == -1)
1.138 djm 1333: *intptr = value;
1.94 markus 1334: break;
1335:
1336: case sHostKeyFile:
1337: arg = strdelim(&cp);
1338: if (!arg || *arg == '\0')
1339: fatal("%s line %d: missing file name.",
1340: filename, linenum);
1.344 djm 1341: if (*activep) {
1342: servconf_add_hostkey(filename, linenum,
1343: options, arg, 1);
1344: }
1.94 markus 1345: break;
1.76 stevesk 1346:
1.240 markus 1347: case sHostKeyAgent:
1348: charptr = &options->host_key_agent;
1349: arg = strdelim(&cp);
1350: if (!arg || *arg == '\0')
1351: fatal("%s line %d: missing socket name.",
1352: filename, linenum);
1353: if (*activep && *charptr == NULL)
1354: *charptr = !strcmp(arg, SSH_AUTHSOCKET_ENV_NAME) ?
1355: xstrdup(arg) : derelativise_path(arg);
1356: break;
1357:
1.203 djm 1358: case sHostCertificate:
1.314 djm 1359: arg = strdelim(&cp);
1360: if (!arg || *arg == '\0')
1361: fatal("%s line %d: missing file name.",
1362: filename, linenum);
1363: if (*activep)
1364: servconf_add_hostcert(filename, linenum, options, arg);
1365: break;
1.203 djm 1366:
1.94 markus 1367: case sPidFile:
1368: charptr = &options->pid_file;
1.314 djm 1369: parse_filename:
1370: arg = strdelim(&cp);
1371: if (!arg || *arg == '\0')
1372: fatal("%s line %d: missing file name.",
1373: filename, linenum);
1374: if (*activep && *charptr == NULL) {
1375: *charptr = derelativise_path(arg);
1376: /* increase optional counter */
1377: if (intptr != NULL)
1378: *intptr = *intptr + 1;
1379: }
1380: break;
1.25 markus 1381:
1.94 markus 1382: case sPermitRootLogin:
1383: intptr = &options->permit_root_login;
1.220 djm 1384: multistate_ptr = multistate_permitrootlogin;
1385: goto parse_multistate;
1.36 markus 1386:
1.94 markus 1387: case sIgnoreRhosts:
1388: intptr = &options->ignore_rhosts;
1.180 djm 1389: parse_flag:
1.320 djm 1390: multistate_ptr = multistate_flag;
1391: goto parse_multistate;
1.94 markus 1392:
1393: case sIgnoreUserKnownHosts:
1394: intptr = &options->ignore_user_known_hosts;
1395: goto parse_flag;
1396:
1397: case sHostbasedAuthentication:
1398: intptr = &options->hostbased_authentication;
1399: goto parse_flag;
1400:
1401: case sHostbasedUsesNameFromPacketOnly:
1402: intptr = &options->hostbased_uses_name_from_packet_only;
1403: goto parse_flag;
1404:
1.258 djm 1405: case sHostbasedAcceptedKeyTypes:
1406: charptr = &options->hostbased_key_types;
1407: parse_keytypes:
1408: arg = strdelim(&cp);
1409: if (!arg || *arg == '\0')
1410: fatal("%s line %d: Missing argument.",
1411: filename, linenum);
1.304 djm 1412: if (*arg != '-' &&
1.352 naddy 1413: !sshkey_names_valid2(*arg == '+' || *arg == '^' ?
1414: arg + 1 : arg, 1))
1.258 djm 1415: fatal("%s line %d: Bad key types '%s'.",
1416: filename, linenum, arg ? arg : "<NONE>");
1417: if (*activep && *charptr == NULL)
1418: *charptr = xstrdup(arg);
1419: break;
1420:
1.276 markus 1421: case sHostKeyAlgorithms:
1422: charptr = &options->hostkeyalgorithms;
1423: goto parse_keytypes;
1424:
1.341 djm 1425: case sCASignatureAlgorithms:
1426: charptr = &options->ca_sign_algorithms;
1427: goto parse_keytypes;
1428:
1.94 markus 1429: case sPubkeyAuthentication:
1430: intptr = &options->pubkey_authentication;
1431: goto parse_flag;
1.119 jakob 1432:
1.258 djm 1433: case sPubkeyAcceptedKeyTypes:
1434: charptr = &options->pubkey_key_types;
1435: goto parse_keytypes;
1436:
1.354 djm 1437: case sPubkeyAuthOptions:
1438: intptr = &options->pubkey_auth_options;
1439: value = 0;
1440: while ((arg = strdelim(&cp)) && *arg != '\0') {
1441: if (strcasecmp(arg, "none") == 0)
1442: continue;
1443: if (strcasecmp(arg, "touch-required") == 0)
1444: value |= PUBKEYAUTH_TOUCH_REQUIRED;
1445: else {
1446: fatal("%s line %d: unsupported "
1447: "PubkeyAuthOptions option %s",
1448: filename, linenum, arg);
1449: }
1450: }
1451: if (*activep && *intptr == -1)
1452: *intptr = value;
1453: break;
1454:
1.94 markus 1455: case sKerberosAuthentication:
1456: intptr = &options->kerberos_authentication;
1457: goto parse_flag;
1458:
1459: case sKerberosOrLocalPasswd:
1460: intptr = &options->kerberos_or_local_passwd;
1461: goto parse_flag;
1462:
1463: case sKerberosTicketCleanup:
1464: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 1465: goto parse_flag;
1466:
1467: case sKerberosGetAFSToken:
1468: intptr = &options->kerberos_get_afs_token;
1.125 markus 1469: goto parse_flag;
1470:
1471: case sGssAuthentication:
1472: intptr = &options->gss_authentication;
1473: goto parse_flag;
1474:
1475: case sGssCleanupCreds:
1476: intptr = &options->gss_cleanup_creds;
1.271 djm 1477: goto parse_flag;
1478:
1479: case sGssStrictAcceptor:
1480: intptr = &options->gss_strict_acceptor;
1.94 markus 1481: goto parse_flag;
1482:
1483: case sPasswordAuthentication:
1484: intptr = &options->password_authentication;
1485: goto parse_flag;
1486:
1487: case sKbdInteractiveAuthentication:
1488: intptr = &options->kbd_interactive_authentication;
1489: goto parse_flag;
1490:
1491: case sChallengeResponseAuthentication:
1492: intptr = &options->challenge_response_authentication;
1493: goto parse_flag;
1494:
1495: case sPrintMotd:
1496: intptr = &options->print_motd;
1497: goto parse_flag;
1498:
1499: case sPrintLastLog:
1500: intptr = &options->print_lastlog;
1501: goto parse_flag;
1502:
1503: case sX11Forwarding:
1504: intptr = &options->x11_forwarding;
1505: goto parse_flag;
1506:
1507: case sX11DisplayOffset:
1508: intptr = &options->x11_display_offset;
1.293 naddy 1509: parse_int:
1510: arg = strdelim(&cp);
1.322 dtucker 1511: if ((errstr = atoi_err(arg, &value)) != NULL)
1512: fatal("%s line %d: integer value %s.",
1513: filename, linenum, errstr);
1.293 naddy 1514: if (*activep && *intptr == -1)
1515: *intptr = value;
1516: break;
1.99 stevesk 1517:
1518: case sX11UseLocalhost:
1519: intptr = &options->x11_use_localhost;
1520: goto parse_flag;
1.94 markus 1521:
1522: case sXAuthLocation:
1523: charptr = &options->xauth_location;
1524: goto parse_filename;
1525:
1.244 djm 1526: case sPermitTTY:
1527: intptr = &options->permit_tty;
1528: goto parse_flag;
1529:
1.250 djm 1530: case sPermitUserRC:
1531: intptr = &options->permit_user_rc;
1532: goto parse_flag;
1533:
1.94 markus 1534: case sStrictModes:
1535: intptr = &options->strict_modes;
1536: goto parse_flag;
1537:
1.129 markus 1538: case sTCPKeepAlive:
1539: intptr = &options->tcp_keep_alive;
1.94 markus 1540: goto parse_flag;
1541:
1542: case sEmptyPasswd:
1543: intptr = &options->permit_empty_passwd;
1.113 markus 1544: goto parse_flag;
1545:
1546: case sPermitUserEnvironment:
1547: intptr = &options->permit_user_env;
1.334 djm 1548: charptr = &options->permit_user_env_whitelist;
1549: arg = strdelim(&cp);
1550: if (!arg || *arg == '\0')
1551: fatal("%s line %d: missing argument.",
1552: filename, linenum);
1553: value = 0;
1554: p = NULL;
1555: if (strcmp(arg, "yes") == 0)
1556: value = 1;
1557: else if (strcmp(arg, "no") == 0)
1558: value = 0;
1559: else {
1560: /* Pattern-list specified */
1561: value = 1;
1562: p = xstrdup(arg);
1563: }
1564: if (*activep && *intptr == -1) {
1565: *intptr = value;
1566: *charptr = p;
1567: p = NULL;
1568: }
1569: free(p);
1570: break;
1.94 markus 1571:
1.111 markus 1572: case sCompression:
1573: intptr = &options->compression;
1.220 djm 1574: multistate_ptr = multistate_compression;
1575: goto parse_multistate;
1.94 markus 1576:
1.235 dtucker 1577: case sRekeyLimit:
1578: arg = strdelim(&cp);
1579: if (!arg || *arg == '\0')
1580: fatal("%.200s line %d: Missing argument.", filename,
1581: linenum);
1582: if (strcmp(arg, "default") == 0) {
1583: val64 = 0;
1584: } else {
1.236 dtucker 1585: if (scan_scaled(arg, &val64) == -1)
1586: fatal("%.200s line %d: Bad number '%s': %s",
1587: filename, linenum, arg, strerror(errno));
1.235 dtucker 1588: if (val64 != 0 && val64 < 16)
1589: fatal("%.200s line %d: RekeyLimit too small",
1590: filename, linenum);
1591: }
1592: if (*activep && options->rekey_limit == -1)
1.284 dtucker 1593: options->rekey_limit = val64;
1.235 dtucker 1594: if (cp != NULL) { /* optional rekey interval present */
1595: if (strcmp(cp, "none") == 0) {
1596: (void)strdelim(&cp); /* discard */
1597: break;
1598: }
1599: intptr = &options->rekey_interval;
1600: goto parse_time;
1601: }
1602: break;
1603:
1.94 markus 1604: case sGatewayPorts:
1.251 millert 1605: intptr = &options->fwd_opts.gateway_ports;
1.220 djm 1606: multistate_ptr = multistate_gatewayports;
1607: goto parse_multistate;
1.25 markus 1608:
1.122 markus 1609: case sUseDNS:
1610: intptr = &options->use_dns;
1.94 markus 1611: goto parse_flag;
1.53 markus 1612:
1.94 markus 1613: case sLogFacility:
1.174 dtucker 1614: log_facility_ptr = &options->log_facility;
1.94 markus 1615: arg = strdelim(&cp);
1616: value = log_facility_number(arg);
1.101 markus 1617: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 1618: fatal("%.200s line %d: unsupported log facility '%s'",
1619: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1620: if (*log_facility_ptr == -1)
1621: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 1622: break;
1.25 markus 1623:
1.94 markus 1624: case sLogLevel:
1.174 dtucker 1625: log_level_ptr = &options->log_level;
1.94 markus 1626: arg = strdelim(&cp);
1627: value = log_level_number(arg);
1.101 markus 1628: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 1629: fatal("%.200s line %d: unsupported log level '%s'",
1630: filename, linenum, arg ? arg : "<NONE>");
1.308 djm 1631: if (*activep && *log_level_ptr == -1)
1.174 dtucker 1632: *log_level_ptr = (LogLevel) value;
1.94 markus 1633: break;
1634:
1635: case sAllowTcpForwarding:
1636: intptr = &options->allow_tcp_forwarding;
1.233 djm 1637: multistate_ptr = multistate_tcpfwd;
1638: goto parse_multistate;
1.102 provos 1639:
1.251 millert 1640: case sAllowStreamLocalForwarding:
1641: intptr = &options->allow_streamlocal_forwarding;
1642: multistate_ptr = multistate_tcpfwd;
1643: goto parse_multistate;
1644:
1.178 pyr 1645: case sAllowAgentForwarding:
1646: intptr = &options->allow_agent_forwarding;
1647: goto parse_flag;
1648:
1.301 djm 1649: case sDisableForwarding:
1650: intptr = &options->disable_forwarding;
1651: goto parse_flag;
1652:
1.94 markus 1653: case sAllowUsers:
1654: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.299 djm 1655: if (match_user(NULL, NULL, NULL, arg) == -1)
1656: fatal("%s line %d: invalid AllowUsers pattern: "
1657: "\"%.100s\"", filename, linenum, arg);
1.227 markus 1658: if (!*activep)
1659: continue;
1.314 djm 1660: array_append(filename, linenum, "AllowUsers",
1661: &options->allow_users, &options->num_allow_users,
1662: arg);
1.94 markus 1663: }
1664: break;
1.25 markus 1665:
1.94 markus 1666: case sDenyUsers:
1667: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.299 djm 1668: if (match_user(NULL, NULL, NULL, arg) == -1)
1669: fatal("%s line %d: invalid DenyUsers pattern: "
1670: "\"%.100s\"", filename, linenum, arg);
1.227 markus 1671: if (!*activep)
1672: continue;
1.314 djm 1673: array_append(filename, linenum, "DenyUsers",
1674: &options->deny_users, &options->num_deny_users,
1675: arg);
1.94 markus 1676: }
1677: break;
1.25 markus 1678:
1.94 markus 1679: case sAllowGroups:
1680: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.227 markus 1681: if (!*activep)
1682: continue;
1.314 djm 1683: array_append(filename, linenum, "AllowGroups",
1684: &options->allow_groups, &options->num_allow_groups,
1685: arg);
1.94 markus 1686: }
1687: break;
1.33 markus 1688:
1.94 markus 1689: case sDenyGroups:
1690: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.227 markus 1691: if (!*activep)
1692: continue;
1.314 djm 1693: array_append(filename, linenum, "DenyGroups",
1694: &options->deny_groups, &options->num_deny_groups,
1695: arg);
1.94 markus 1696: }
1697: break;
1.66 markus 1698:
1.94 markus 1699: case sCiphers:
1700: arg = strdelim(&cp);
1701: if (!arg || *arg == '\0')
1702: fatal("%s line %d: Missing argument.", filename, linenum);
1.352 naddy 1703: if (*arg != '-' &&
1704: !ciphers_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.94 markus 1705: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1706: filename, linenum, arg ? arg : "<NONE>");
1707: if (options->ciphers == NULL)
1708: options->ciphers = xstrdup(arg);
1709: break;
1.33 markus 1710:
1.94 markus 1711: case sMacs:
1712: arg = strdelim(&cp);
1713: if (!arg || *arg == '\0')
1714: fatal("%s line %d: Missing argument.", filename, linenum);
1.352 naddy 1715: if (*arg != '-' &&
1716: !mac_valid(*arg == '+' || *arg == '^' ? arg + 1 : arg))
1.94 markus 1717: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1718: filename, linenum, arg ? arg : "<NONE>");
1719: if (options->macs == NULL)
1720: options->macs = xstrdup(arg);
1.211 djm 1721: break;
1722:
1723: case sKexAlgorithms:
1724: arg = strdelim(&cp);
1725: if (!arg || *arg == '\0')
1726: fatal("%s line %d: Missing argument.",
1727: filename, linenum);
1.304 djm 1728: if (*arg != '-' &&
1.352 naddy 1729: !kex_names_valid(*arg == '+' || *arg == '^' ?
1730: arg + 1 : arg))
1.211 djm 1731: fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
1732: filename, linenum, arg ? arg : "<NONE>");
1733: if (options->kex_algorithms == NULL)
1734: options->kex_algorithms = xstrdup(arg);
1.94 markus 1735: break;
1.43 jakob 1736:
1.94 markus 1737: case sSubsystem:
1738: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1739: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1740: filename, linenum);
1.94 markus 1741: }
1742: arg = strdelim(&cp);
1743: if (!arg || *arg == '\0')
1744: fatal("%s line %d: Missing subsystem name.",
1.95 deraadt 1745: filename, linenum);
1.153 dtucker 1746: if (!*activep) {
1747: arg = strdelim(&cp);
1748: break;
1749: }
1.94 markus 1750: for (i = 0; i < options->num_subsystems; i++)
1751: if (strcmp(arg, options->subsystem_name[i]) == 0)
1752: fatal("%s line %d: Subsystem '%s' already defined.",
1.95 deraadt 1753: filename, linenum, arg);
1.94 markus 1754: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1755: arg = strdelim(&cp);
1756: if (!arg || *arg == '\0')
1757: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1758: filename, linenum);
1.94 markus 1759: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1760:
1761: /* Collect arguments (separate to executable) */
1762: p = xstrdup(arg);
1763: len = strlen(p) + 1;
1764: while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1765: len += 1 + strlen(arg);
1.264 deraadt 1766: p = xreallocarray(p, 1, len);
1.151 djm 1767: strlcat(p, " ", len);
1768: strlcat(p, arg, len);
1769: }
1770: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1771: options->num_subsystems++;
1772: break;
1.46 markus 1773:
1.94 markus 1774: case sMaxStartups:
1775: arg = strdelim(&cp);
1776: if (!arg || *arg == '\0')
1777: fatal("%s line %d: Missing MaxStartups spec.",
1.95 deraadt 1778: filename, linenum);
1.94 markus 1779: if ((n = sscanf(arg, "%d:%d:%d",
1780: &options->max_startups_begin,
1781: &options->max_startups_rate,
1782: &options->max_startups)) == 3) {
1783: if (options->max_startups_begin >
1784: options->max_startups ||
1785: options->max_startups_rate > 100 ||
1786: options->max_startups_rate < 1)
1.50 markus 1787: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 1788: filename, linenum);
1.94 markus 1789: } else if (n != 1)
1790: fatal("%s line %d: Illegal MaxStartups spec.",
1791: filename, linenum);
1792: else
1793: options->max_startups = options->max_startups_begin;
1794: break;
1.133 dtucker 1795:
1796: case sMaxAuthTries:
1797: intptr = &options->max_authtries;
1798: goto parse_int;
1.94 markus 1799:
1.180 djm 1800: case sMaxSessions:
1801: intptr = &options->max_sessions;
1802: goto parse_int;
1803:
1.94 markus 1804: case sBanner:
1805: charptr = &options->banner;
1806: goto parse_filename;
1.176 djm 1807:
1.94 markus 1808: /*
1809: * These options can contain %X options expanded at
1810: * connect time, so that you can specify paths like:
1811: *
1812: * AuthorizedKeysFile /etc/ssh_keys/%u
1813: */
1814: case sAuthorizedKeysFile:
1.219 djm 1815: if (*activep && options->num_authkeys_files == 0) {
1816: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.314 djm 1817: arg = tilde_expand_filename(arg, getuid());
1818: array_append(filename, linenum,
1819: "AuthorizedKeysFile",
1820: &options->authorized_keys_files,
1821: &options->num_authkeys_files, arg);
1822: free(arg);
1.219 djm 1823: }
1824: }
1825: return 0;
1826:
1.208 djm 1827: case sAuthorizedPrincipalsFile:
1828: charptr = &options->authorized_principals_file;
1.205 djm 1829: arg = strdelim(&cp);
1830: if (!arg || *arg == '\0')
1831: fatal("%s line %d: missing file name.",
1832: filename, linenum);
1833: if (*activep && *charptr == NULL) {
1.206 markus 1834: *charptr = tilde_expand_filename(arg, getuid());
1.205 djm 1835: /* increase optional counter */
1836: if (intptr != NULL)
1837: *intptr = *intptr + 1;
1838: }
1839: break;
1.94 markus 1840:
1841: case sClientAliveInterval:
1842: intptr = &options->client_alive_interval;
1843: goto parse_time;
1844:
1845: case sClientAliveCountMax:
1846: intptr = &options->client_alive_count_max;
1847: goto parse_int;
1.131 djm 1848:
1849: case sAcceptEnv:
1850: while ((arg = strdelim(&cp)) && *arg != '\0') {
1851: if (strchr(arg, '=') != NULL)
1852: fatal("%s line %d: Invalid environment name.",
1853: filename, linenum);
1.153 dtucker 1854: if (!*activep)
1.227 markus 1855: continue;
1.314 djm 1856: array_append(filename, linenum, "AcceptEnv",
1857: &options->accept_env, &options->num_accept_env,
1858: arg);
1.131 djm 1859: }
1860: break;
1.145 reyk 1861:
1.332 djm 1862: case sSetEnv:
1863: uvalue = options->num_setenv;
1864: while ((arg = strdelimw(&cp)) && *arg != '\0') {
1865: if (strchr(arg, '=') == NULL)
1866: fatal("%s line %d: Invalid environment.",
1867: filename, linenum);
1868: if (!*activep || uvalue != 0)
1869: continue;
1870: array_append(filename, linenum, "SetEnv",
1871: &options->setenv, &options->num_setenv, arg);
1872: }
1873: break;
1874:
1.145 reyk 1875: case sPermitTunnel:
1876: intptr = &options->permit_tun;
1.146 reyk 1877: arg = strdelim(&cp);
1878: if (!arg || *arg == '\0')
1879: fatal("%s line %d: Missing yes/point-to-point/"
1880: "ethernet/no argument.", filename, linenum);
1.182 dtucker 1881: value = -1;
1882: for (i = 0; tunmode_desc[i].val != -1; i++)
1883: if (strcmp(tunmode_desc[i].text, arg) == 0) {
1884: value = tunmode_desc[i].val;
1885: break;
1886: }
1887: if (value == -1)
1.146 reyk 1888: fatal("%s line %d: Bad yes/point-to-point/ethernet/"
1889: "no argument: %s", filename, linenum, arg);
1.268 djm 1890: if (*activep && *intptr == -1)
1.146 reyk 1891: *intptr = value;
1892: break;
1.94 markus 1893:
1.153 dtucker 1894: case sMatch:
1895: if (cmdline)
1896: fatal("Match directive not supported as a command-line "
1897: "option");
1.226 dtucker 1898: value = match_cfg_line(&cp, linenum, connectinfo);
1.153 dtucker 1899: if (value < 0)
1900: fatal("%s line %d: Bad Match condition", filename,
1901: linenum);
1902: *activep = value;
1.156 dtucker 1903: break;
1904:
1.330 djm 1905: case sPermitListen:
1.156 dtucker 1906: case sPermitOpen:
1.330 djm 1907: if (opcode == sPermitListen) {
1908: uintptr = &options->num_permitted_listens;
1909: chararrayptr = &options->permitted_listens;
1.329 djm 1910: } else {
1911: uintptr = &options->num_permitted_opens;
1912: chararrayptr = &options->permitted_opens;
1913: }
1.156 dtucker 1914: arg = strdelim(&cp);
1915: if (!arg || *arg == '\0')
1.329 djm 1916: fatal("%s line %d: missing %s specification",
1917: filename, linenum, lookup_opcode_name(opcode));
1918: uvalue = *uintptr; /* modified later */
1.310 djm 1919: if (strcmp(arg, "any") == 0 || strcmp(arg, "none") == 0) {
1.329 djm 1920: if (*activep && uvalue == 0) {
1921: *uintptr = 1;
1922: *chararrayptr = xcalloc(1,
1923: sizeof(**chararrayptr));
1924: (*chararrayptr)[0] = xstrdup(arg);
1.311 dtucker 1925: }
1.156 dtucker 1926: break;
1927: }
1.159 dtucker 1928: for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
1.333 djm 1929: if (opcode == sPermitListen &&
1930: strchr(arg, ':') == NULL) {
1931: /*
1932: * Allow bare port number for PermitListen
1933: * to indicate a wildcard listen host.
1934: */
1935: xasprintf(&arg2, "*:%s", arg);
1936: } else {
1937: arg2 = xstrdup(arg);
1.348 dtucker 1938: ch = '\0';
1.347 dtucker 1939: p = hpdelim2(&arg, &ch);
1940: if (p == NULL || ch == '/') {
1.333 djm 1941: fatal("%s line %d: missing host in %s",
1942: filename, linenum,
1943: lookup_opcode_name(opcode));
1944: }
1945: p = cleanhostname(p);
1.329 djm 1946: }
1947: if (arg == NULL ||
1948: ((port = permitopen_port(arg)) < 0)) {
1949: fatal("%s line %d: bad port number in %s",
1950: filename, linenum,
1951: lookup_opcode_name(opcode));
1952: }
1953: if (*activep && uvalue == 0) {
1.314 djm 1954: array_append(filename, linenum,
1.329 djm 1955: lookup_opcode_name(opcode),
1956: chararrayptr, uintptr, arg2);
1.314 djm 1957: }
1958: free(arg2);
1.159 dtucker 1959: }
1.153 dtucker 1960: break;
1961:
1.158 dtucker 1962: case sForceCommand:
1.262 dtucker 1963: if (cp == NULL || *cp == '\0')
1.158 dtucker 1964: fatal("%.200s line %d: Missing argument.", filename,
1965: linenum);
1966: len = strspn(cp, WHITESPACE);
1967: if (*activep && options->adm_forced_command == NULL)
1968: options->adm_forced_command = xstrdup(cp + len);
1969: return 0;
1970:
1.176 djm 1971: case sChrootDirectory:
1972: charptr = &options->chroot_directory;
1.177 djm 1973:
1974: arg = strdelim(&cp);
1975: if (!arg || *arg == '\0')
1976: fatal("%s line %d: missing file name.",
1977: filename, linenum);
1978: if (*activep && *charptr == NULL)
1979: *charptr = xstrdup(arg);
1980: break;
1.176 djm 1981:
1.204 djm 1982: case sTrustedUserCAKeys:
1983: charptr = &options->trusted_user_ca_keys;
1984: goto parse_filename;
1985:
1986: case sRevokedKeys:
1987: charptr = &options->revoked_keys_file;
1988: goto parse_filename;
1989:
1.355 djm 1990: case sSecurityKeyProvider:
1991: charptr = &options->sk_provider;
1.356 djm 1992: arg = strdelim(&cp);
1993: if (!arg || *arg == '\0')
1994: fatal("%s line %d: missing file name.",
1995: filename, linenum);
1996: if (*activep && *charptr == NULL) {
1997: *charptr = strcasecmp(arg, "internal") == 0 ?
1998: xstrdup(arg) : derelativise_path(arg);
1999: /* increase optional counter */
2000: if (intptr != NULL)
2001: *intptr = *intptr + 1;
2002: }
2003: break;
1.355 djm 2004:
1.213 djm 2005: case sIPQoS:
2006: arg = strdelim(&cp);
2007: if ((value = parse_ipqos(arg)) == -1)
2008: fatal("%s line %d: Bad IPQoS value: %s",
2009: filename, linenum, arg);
2010: arg = strdelim(&cp);
2011: if (arg == NULL)
2012: value2 = value;
2013: else if ((value2 = parse_ipqos(arg)) == -1)
2014: fatal("%s line %d: Bad IPQoS value: %s",
2015: filename, linenum, arg);
2016: if (*activep) {
2017: options->ip_qos_interactive = value;
2018: options->ip_qos_bulk = value2;
2019: }
2020: break;
2021:
1.225 djm 2022: case sVersionAddendum:
1.262 dtucker 2023: if (cp == NULL || *cp == '\0')
1.225 djm 2024: fatal("%.200s line %d: Missing argument.", filename,
2025: linenum);
2026: len = strspn(cp, WHITESPACE);
2027: if (*activep && options->version_addendum == NULL) {
2028: if (strcasecmp(cp + len, "none") == 0)
2029: options->version_addendum = xstrdup("");
2030: else if (strchr(cp + len, '\r') != NULL)
2031: fatal("%.200s line %d: Invalid argument",
2032: filename, linenum);
2033: else
2034: options->version_addendum = xstrdup(cp + len);
2035: }
2036: return 0;
2037:
1.231 djm 2038: case sAuthorizedKeysCommand:
1.255 jsg 2039: if (cp == NULL)
2040: fatal("%.200s line %d: Missing argument.", filename,
2041: linenum);
1.231 djm 2042: len = strspn(cp, WHITESPACE);
2043: if (*activep && options->authorized_keys_command == NULL) {
2044: if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
2045: fatal("%.200s line %d: AuthorizedKeysCommand "
2046: "must be an absolute path",
2047: filename, linenum);
2048: options->authorized_keys_command = xstrdup(cp + len);
2049: }
2050: return 0;
2051:
2052: case sAuthorizedKeysCommandUser:
2053: charptr = &options->authorized_keys_command_user;
2054:
2055: arg = strdelim(&cp);
1.255 jsg 2056: if (!arg || *arg == '\0')
2057: fatal("%s line %d: missing AuthorizedKeysCommandUser "
2058: "argument.", filename, linenum);
1.231 djm 2059: if (*activep && *charptr == NULL)
2060: *charptr = xstrdup(arg);
2061: break;
2062:
1.270 djm 2063: case sAuthorizedPrincipalsCommand:
2064: if (cp == NULL)
2065: fatal("%.200s line %d: Missing argument.", filename,
2066: linenum);
2067: len = strspn(cp, WHITESPACE);
2068: if (*activep &&
2069: options->authorized_principals_command == NULL) {
2070: if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
2071: fatal("%.200s line %d: "
2072: "AuthorizedPrincipalsCommand must be "
2073: "an absolute path", filename, linenum);
2074: options->authorized_principals_command =
2075: xstrdup(cp + len);
2076: }
2077: return 0;
2078:
2079: case sAuthorizedPrincipalsCommandUser:
2080: charptr = &options->authorized_principals_command_user;
2081:
2082: arg = strdelim(&cp);
2083: if (!arg || *arg == '\0')
2084: fatal("%s line %d: missing "
2085: "AuthorizedPrincipalsCommandUser argument.",
2086: filename, linenum);
2087: if (*activep && *charptr == NULL)
2088: *charptr = xstrdup(arg);
2089: break;
2090:
1.232 djm 2091: case sAuthenticationMethods:
1.268 djm 2092: if (options->num_auth_methods == 0) {
1.291 djm 2093: value = 0; /* seen "any" pseudo-method */
1.328 djm 2094: value2 = 0; /* successfully parsed any method */
1.232 djm 2095: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.291 djm 2096: if (strcmp(arg, "any") == 0) {
2097: if (options->num_auth_methods > 0) {
2098: fatal("%s line %d: \"any\" "
2099: "must appear alone in "
2100: "AuthenticationMethods",
2101: filename, linenum);
2102: }
2103: value = 1;
2104: } else if (value) {
2105: fatal("%s line %d: \"any\" must appear "
2106: "alone in AuthenticationMethods",
2107: filename, linenum);
2108: } else if (auth2_methods_valid(arg, 0) != 0) {
1.232 djm 2109: fatal("%s line %d: invalid "
2110: "authentication method list.",
2111: filename, linenum);
1.291 djm 2112: }
1.292 djm 2113: value2 = 1;
1.268 djm 2114: if (!*activep)
2115: continue;
1.314 djm 2116: array_append(filename, linenum,
2117: "AuthenticationMethods",
2118: &options->auth_methods,
2119: &options->num_auth_methods, arg);
1.232 djm 2120: }
1.292 djm 2121: if (value2 == 0) {
1.291 djm 2122: fatal("%s line %d: no AuthenticationMethods "
2123: "specified", filename, linenum);
2124: }
1.232 djm 2125: }
2126: return 0;
2127:
1.251 millert 2128: case sStreamLocalBindMask:
2129: arg = strdelim(&cp);
2130: if (!arg || *arg == '\0')
1.268 djm 2131: fatal("%s line %d: missing StreamLocalBindMask "
2132: "argument.", filename, linenum);
1.251 millert 2133: /* Parse mode in octal format */
2134: value = strtol(arg, &p, 8);
2135: if (arg == p || value < 0 || value > 0777)
2136: fatal("%s line %d: Bad mask.", filename, linenum);
1.268 djm 2137: if (*activep)
2138: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1.251 millert 2139: break;
2140:
2141: case sStreamLocalBindUnlink:
2142: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2143: goto parse_flag;
2144:
1.256 djm 2145: case sFingerprintHash:
2146: arg = strdelim(&cp);
2147: if (!arg || *arg == '\0')
2148: fatal("%.200s line %d: Missing argument.",
2149: filename, linenum);
2150: if ((value = ssh_digest_alg_by_name(arg)) == -1)
2151: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
2152: filename, linenum, arg);
2153: if (*activep)
2154: options->fingerprint_hash = value;
2155: break;
2156:
1.309 djm 2157: case sExposeAuthInfo:
2158: intptr = &options->expose_userauth_info;
2159: goto parse_flag;
2160:
1.316 djm 2161: case sRDomain:
2162: charptr = &options->routing_domain;
2163: arg = strdelim(&cp);
2164: if (!arg || *arg == '\0')
2165: fatal("%.200s line %d: Missing argument.",
2166: filename, linenum);
2167: if (strcasecmp(arg, "none") != 0 && strcmp(arg, "%D") != 0 &&
2168: !valid_rdomain(arg))
2169: fatal("%s line %d: bad routing domain",
2170: filename, linenum);
2171: if (*activep && *charptr == NULL)
2172: *charptr = xstrdup(arg);
1.321 dtucker 2173: break;
1.316 djm 2174:
1.94 markus 2175: case sDeprecated:
1.295 djm 2176: case sIgnore:
1.121 jakob 2177: case sUnsupported:
1.295 djm 2178: do_log2(opcode == sIgnore ?
2179: SYSLOG_LEVEL_DEBUG2 : SYSLOG_LEVEL_INFO,
2180: "%s line %d: %s option %s", filename, linenum,
2181: opcode == sUnsupported ? "Unsupported" : "Deprecated", arg);
1.94 markus 2182: while (arg)
2183: arg = strdelim(&cp);
2184: break;
2185:
2186: default:
2187: fatal("%s line %d: Missing handler for opcode %s (%d)",
2188: filename, linenum, arg, opcode);
2189: }
2190: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
2191: fatal("%s line %d: garbage at end of line; \"%.200s\".",
2192: filename, linenum, arg);
2193: return 0;
2194: }
2195:
2196: /* Reads the server configuration file. */
1.25 markus 2197:
1.94 markus 2198: void
1.338 markus 2199: load_server_config(const char *filename, struct sshbuf *conf)
1.94 markus 2200: {
1.331 markus 2201: char *line = NULL, *cp;
2202: size_t linesize = 0;
1.94 markus 2203: FILE *f;
1.338 markus 2204: int r, lineno = 0;
1.81 stevesk 2205:
1.134 djm 2206: debug2("%s: filename %s", __func__, filename);
2207: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 2208: perror(filename);
2209: exit(1);
2210: }
1.338 markus 2211: sshbuf_reset(conf);
1.331 markus 2212: while (getline(&line, &linesize, f) != -1) {
1.229 dtucker 2213: lineno++;
1.134 djm 2214: /*
2215: * Trim out comments and strip whitespace
1.135 deraadt 2216: * NB - preserve newlines, they are needed to reproduce
1.134 djm 2217: * line numbers later for error messages
2218: */
2219: if ((cp = strchr(line, '#')) != NULL)
2220: memcpy(cp, "\n", 2);
2221: cp = line + strspn(line, " \t\r");
1.338 markus 2222: if ((r = sshbuf_put(conf, cp, strlen(cp))) != 0)
2223: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.134 djm 2224: }
1.331 markus 2225: free(line);
1.338 markus 2226: if ((r = sshbuf_put_u8(conf, 0)) != 0)
2227: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.134 djm 2228: fclose(f);
1.338 markus 2229: debug2("%s: done config len = %zu", __func__, sshbuf_len(conf));
1.134 djm 2230: }
2231:
2232: void
1.226 dtucker 2233: parse_server_match_config(ServerOptions *options,
2234: struct connection_info *connectinfo)
1.153 dtucker 2235: {
2236: ServerOptions mo;
2237:
2238: initialize_server_options(&mo);
1.338 markus 2239: parse_server_config(&mo, "reprocess config", cfg, connectinfo);
1.168 dtucker 2240: copy_set_server_options(options, &mo, 0);
1.153 dtucker 2241: }
2242:
1.226 dtucker 2243: int parse_server_match_testspec(struct connection_info *ci, char *spec)
2244: {
2245: char *p;
2246:
2247: while ((p = strsep(&spec, ",")) && *p != '\0') {
2248: if (strncmp(p, "addr=", 5) == 0) {
2249: ci->address = xstrdup(p + 5);
2250: } else if (strncmp(p, "host=", 5) == 0) {
2251: ci->host = xstrdup(p + 5);
2252: } else if (strncmp(p, "user=", 5) == 0) {
2253: ci->user = xstrdup(p + 5);
2254: } else if (strncmp(p, "laddr=", 6) == 0) {
2255: ci->laddress = xstrdup(p + 6);
1.317 djm 2256: } else if (strncmp(p, "rdomain=", 8) == 0) {
2257: ci->rdomain = xstrdup(p + 8);
1.226 dtucker 2258: } else if (strncmp(p, "lport=", 6) == 0) {
2259: ci->lport = a2port(p + 6);
2260: if (ci->lport == -1) {
2261: fprintf(stderr, "Invalid port '%s' in test mode"
2262: " specification %s\n", p+6, p);
2263: return -1;
2264: }
2265: } else {
2266: fprintf(stderr, "Invalid test mode specification %s\n",
2267: p);
2268: return -1;
2269: }
2270: }
2271: return 0;
2272: }
2273:
1.168 dtucker 2274: /*
2275: * Copy any supported values that are set.
2276: *
1.195 jj 2277: * If the preauth flag is set, we do not bother copying the string or
1.168 dtucker 2278: * array values that are not used pre-authentication, because any that we
1.328 djm 2279: * do use must be explicitly sent in mm_getpwnamallow().
1.168 dtucker 2280: */
1.153 dtucker 2281: void
1.168 dtucker 2282: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 2283: {
1.247 djm 2284: #define M_CP_INTOPT(n) do {\
2285: if (src->n != -1) \
2286: dst->n = src->n; \
2287: } while (0)
2288:
1.168 dtucker 2289: M_CP_INTOPT(password_authentication);
2290: M_CP_INTOPT(gss_authentication);
2291: M_CP_INTOPT(pubkey_authentication);
1.354 djm 2292: M_CP_INTOPT(pubkey_auth_options);
1.168 dtucker 2293: M_CP_INTOPT(kerberos_authentication);
2294: M_CP_INTOPT(hostbased_authentication);
1.209 djm 2295: M_CP_INTOPT(hostbased_uses_name_from_packet_only);
1.168 dtucker 2296: M_CP_INTOPT(kbd_interactive_authentication);
1.175 dtucker 2297: M_CP_INTOPT(permit_root_login);
1.188 djm 2298: M_CP_INTOPT(permit_empty_passwd);
1.168 dtucker 2299:
2300: M_CP_INTOPT(allow_tcp_forwarding);
1.251 millert 2301: M_CP_INTOPT(allow_streamlocal_forwarding);
1.178 pyr 2302: M_CP_INTOPT(allow_agent_forwarding);
1.301 djm 2303: M_CP_INTOPT(disable_forwarding);
1.309 djm 2304: M_CP_INTOPT(expose_userauth_info);
1.209 djm 2305: M_CP_INTOPT(permit_tun);
1.251 millert 2306: M_CP_INTOPT(fwd_opts.gateway_ports);
1.289 djm 2307: M_CP_INTOPT(fwd_opts.streamlocal_bind_unlink);
1.168 dtucker 2308: M_CP_INTOPT(x11_display_offset);
2309: M_CP_INTOPT(x11_forwarding);
2310: M_CP_INTOPT(x11_use_localhost);
1.244 djm 2311: M_CP_INTOPT(permit_tty);
1.250 djm 2312: M_CP_INTOPT(permit_user_rc);
1.180 djm 2313: M_CP_INTOPT(max_sessions);
1.184 dtucker 2314: M_CP_INTOPT(max_authtries);
1.300 markus 2315: M_CP_INTOPT(client_alive_count_max);
2316: M_CP_INTOPT(client_alive_interval);
1.213 djm 2317: M_CP_INTOPT(ip_qos_interactive);
2318: M_CP_INTOPT(ip_qos_bulk);
1.235 dtucker 2319: M_CP_INTOPT(rekey_limit);
2320: M_CP_INTOPT(rekey_interval);
1.308 djm 2321: M_CP_INTOPT(log_level);
1.289 djm 2322:
2323: /*
2324: * The bind_mask is a mode_t that may be unsigned, so we can't use
2325: * M_CP_INTOPT - it does a signed comparison that causes compiler
2326: * warnings.
2327: */
1.290 dtucker 2328: if (src->fwd_opts.streamlocal_bind_mask != (mode_t)-1) {
1.289 djm 2329: dst->fwd_opts.streamlocal_bind_mask =
2330: src->fwd_opts.streamlocal_bind_mask;
2331: }
1.247 djm 2332:
2333: /* M_CP_STROPT and M_CP_STRARRAYOPT should not appear before here */
2334: #define M_CP_STROPT(n) do {\
2335: if (src->n != NULL && dst->n != src->n) { \
2336: free(dst->n); \
2337: dst->n = src->n; \
2338: } \
2339: } while(0)
1.314 djm 2340: #define M_CP_STRARRAYOPT(s, num_s) do {\
2341: u_int i; \
2342: if (src->num_s != 0) { \
2343: for (i = 0; i < dst->num_s; i++) \
2344: free(dst->s[i]); \
2345: free(dst->s); \
2346: dst->s = xcalloc(src->num_s, sizeof(*dst->s)); \
2347: for (i = 0; i < src->num_s; i++) \
2348: dst->s[i] = xstrdup(src->s[i]); \
2349: dst->num_s = src->num_s; \
1.312 djm 2350: } \
2351: } while(0)
1.168 dtucker 2352:
1.218 djm 2353: /* See comment in servconf.h */
2354: COPY_MATCH_STRING_OPTS();
1.282 djm 2355:
2356: /* Arguments that accept '+...' need to be expanded */
2357: assemble_algorithms(dst);
1.216 djm 2358:
1.217 dtucker 2359: /*
2360: * The only things that should be below this point are string options
2361: * which are only used after authentication.
2362: */
1.168 dtucker 2363: if (preauth)
2364: return;
1.219 djm 2365:
1.283 djm 2366: /* These options may be "none" to clear a global setting */
1.168 dtucker 2367: M_CP_STROPT(adm_forced_command);
1.283 djm 2368: if (option_clear_or_none(dst->adm_forced_command)) {
2369: free(dst->adm_forced_command);
2370: dst->adm_forced_command = NULL;
2371: }
1.176 djm 2372: M_CP_STROPT(chroot_directory);
1.283 djm 2373: if (option_clear_or_none(dst->chroot_directory)) {
2374: free(dst->chroot_directory);
2375: dst->chroot_directory = NULL;
2376: }
1.153 dtucker 2377: }
1.168 dtucker 2378:
2379: #undef M_CP_INTOPT
2380: #undef M_CP_STROPT
1.219 djm 2381: #undef M_CP_STRARRAYOPT
1.153 dtucker 2382:
2383: void
1.338 markus 2384: parse_server_config(ServerOptions *options, const char *filename,
2385: struct sshbuf *conf, struct connection_info *connectinfo)
1.134 djm 2386: {
1.153 dtucker 2387: int active, linenum, bad_options = 0;
1.136 dtucker 2388: char *cp, *obuf, *cbuf;
1.134 djm 2389:
1.338 markus 2390: debug2("%s: config %s len %zu", __func__, filename, sshbuf_len(conf));
1.134 djm 2391:
1.287 djm 2392: if ((obuf = cbuf = sshbuf_dup_string(conf)) == NULL)
2393: fatal("%s: sshbuf_dup_string failed", __func__);
1.226 dtucker 2394: active = connectinfo ? 0 : 1;
1.137 dtucker 2395: linenum = 1;
1.140 deraadt 2396: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.134 djm 2397: if (process_server_config_line(options, cp, filename,
1.226 dtucker 2398: linenum++, &active, connectinfo) != 0)
1.94 markus 2399: bad_options++;
1.1 deraadt 2400: }
1.239 djm 2401: free(obuf);
1.78 stevesk 2402: if (bad_options > 0)
2403: fatal("%s: terminating, %d bad configuration options",
2404: filename, bad_options);
1.266 dtucker 2405: process_queued_listen_addrs(options);
1.182 dtucker 2406: }
2407:
2408: static const char *
1.221 djm 2409: fmt_multistate_int(int val, const struct multistate *m)
2410: {
2411: u_int i;
2412:
2413: for (i = 0; m[i].key != NULL; i++) {
2414: if (m[i].value == val)
2415: return m[i].key;
2416: }
2417: return "UNKNOWN";
2418: }
2419:
2420: static const char *
1.182 dtucker 2421: fmt_intarg(ServerOpCodes code, int val)
2422: {
1.221 djm 2423: if (val == -1)
2424: return "unset";
2425: switch (code) {
2426: case sAddressFamily:
2427: return fmt_multistate_int(val, multistate_addressfamily);
2428: case sPermitRootLogin:
2429: return fmt_multistate_int(val, multistate_permitrootlogin);
2430: case sGatewayPorts:
2431: return fmt_multistate_int(val, multistate_gatewayports);
2432: case sCompression:
2433: return fmt_multistate_int(val, multistate_compression);
1.233 djm 2434: case sAllowTcpForwarding:
2435: return fmt_multistate_int(val, multistate_tcpfwd);
1.251 millert 2436: case sAllowStreamLocalForwarding:
2437: return fmt_multistate_int(val, multistate_tcpfwd);
1.256 djm 2438: case sFingerprintHash:
2439: return ssh_digest_alg_name(val);
1.221 djm 2440: default:
2441: switch (val) {
2442: case 0:
2443: return "no";
2444: case 1:
2445: return "yes";
2446: default:
2447: return "UNKNOWN";
2448: }
1.182 dtucker 2449: }
2450: }
2451:
2452: static void
2453: dump_cfg_int(ServerOpCodes code, int val)
2454: {
2455: printf("%s %d\n", lookup_opcode_name(code), val);
2456: }
2457:
2458: static void
1.263 dtucker 2459: dump_cfg_oct(ServerOpCodes code, int val)
2460: {
2461: printf("%s 0%o\n", lookup_opcode_name(code), val);
2462: }
2463:
2464: static void
1.182 dtucker 2465: dump_cfg_fmtint(ServerOpCodes code, int val)
2466: {
2467: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2468: }
2469:
2470: static void
2471: dump_cfg_string(ServerOpCodes code, const char *val)
2472: {
1.257 djm 2473: printf("%s %s\n", lookup_opcode_name(code),
2474: val == NULL ? "none" : val);
1.182 dtucker 2475: }
2476:
2477: static void
2478: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
2479: {
2480: u_int i;
2481:
2482: for (i = 0; i < count; i++)
1.219 djm 2483: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2484: }
2485:
2486: static void
2487: dump_cfg_strarray_oneline(ServerOpCodes code, u_int count, char **vals)
2488: {
2489: u_int i;
2490:
1.291 djm 2491: if (count <= 0 && code != sAuthenticationMethods)
1.261 dtucker 2492: return;
1.219 djm 2493: printf("%s", lookup_opcode_name(code));
2494: for (i = 0; i < count; i++)
2495: printf(" %s", vals[i]);
1.291 djm 2496: if (code == sAuthenticationMethods && count == 0)
2497: printf(" any");
1.219 djm 2498: printf("\n");
1.182 dtucker 2499: }
2500:
1.315 djm 2501: static char *
2502: format_listen_addrs(struct listenaddr *la)
1.182 dtucker 2503: {
1.315 djm 2504: int r;
1.182 dtucker 2505: struct addrinfo *ai;
1.315 djm 2506: char addr[NI_MAXHOST], port[NI_MAXSERV];
1.263 dtucker 2507: char *laddr1 = xstrdup(""), *laddr2 = NULL;
1.182 dtucker 2508:
1.263 dtucker 2509: /*
2510: * ListenAddress must be after Port. add_one_listen_addr pushes
2511: * addresses onto a stack, so to maintain ordering we need to
2512: * print these in reverse order.
2513: */
1.315 djm 2514: for (ai = la->addrs; ai; ai = ai->ai_next) {
2515: if ((r = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1.182 dtucker 2516: sizeof(addr), port, sizeof(port),
2517: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1.315 djm 2518: error("getnameinfo: %.100s", ssh_gai_strerror(r));
2519: continue;
2520: }
2521: laddr2 = laddr1;
2522: if (ai->ai_family == AF_INET6) {
2523: xasprintf(&laddr1, "listenaddress [%s]:%s%s%s\n%s",
2524: addr, port,
2525: la->rdomain == NULL ? "" : " rdomain ",
2526: la->rdomain == NULL ? "" : la->rdomain,
2527: laddr2);
1.182 dtucker 2528: } else {
1.315 djm 2529: xasprintf(&laddr1, "listenaddress %s:%s%s%s\n%s",
2530: addr, port,
2531: la->rdomain == NULL ? "" : " rdomain ",
2532: la->rdomain == NULL ? "" : la->rdomain,
2533: laddr2);
1.182 dtucker 2534: }
1.315 djm 2535: free(laddr2);
2536: }
2537: return laddr1;
2538: }
2539:
2540: void
2541: dump_config(ServerOptions *o)
2542: {
2543: char *s;
2544: u_int i;
2545:
2546: /* these are usually at the top of the config */
2547: for (i = 0; i < o->num_ports; i++)
2548: printf("port %d\n", o->ports[i]);
2549: dump_cfg_fmtint(sAddressFamily, o->address_family);
2550:
2551: for (i = 0; i < o->num_listen_addrs; i++) {
2552: s = format_listen_addrs(&o->listen_addrs[i]);
2553: printf("%s", s);
2554: free(s);
1.182 dtucker 2555: }
2556:
2557: /* integer arguments */
2558: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
2559: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
2560: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1.189 djm 2561: dump_cfg_int(sMaxSessions, o->max_sessions);
1.182 dtucker 2562: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
2563: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1.263 dtucker 2564: dump_cfg_oct(sStreamLocalBindMask, o->fwd_opts.streamlocal_bind_mask);
1.182 dtucker 2565:
2566: /* formatted integer arguments */
2567: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
2568: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
2569: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
2570: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
2571: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
2572: o->hostbased_uses_name_from_packet_only);
2573: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1.187 djm 2574: #ifdef KRB5
1.182 dtucker 2575: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
2576: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
2577: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
2578: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1.187 djm 2579: #endif
2580: #ifdef GSSAPI
1.182 dtucker 2581: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
2582: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1.187 djm 2583: #endif
1.182 dtucker 2584: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
2585: dump_cfg_fmtint(sKbdInteractiveAuthentication,
2586: o->kbd_interactive_authentication);
2587: dump_cfg_fmtint(sChallengeResponseAuthentication,
2588: o->challenge_response_authentication);
2589: dump_cfg_fmtint(sPrintMotd, o->print_motd);
2590: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
2591: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
2592: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1.244 djm 2593: dump_cfg_fmtint(sPermitTTY, o->permit_tty);
1.250 djm 2594: dump_cfg_fmtint(sPermitUserRC, o->permit_user_rc);
1.182 dtucker 2595: dump_cfg_fmtint(sStrictModes, o->strict_modes);
2596: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
2597: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
2598: dump_cfg_fmtint(sCompression, o->compression);
1.251 millert 2599: dump_cfg_fmtint(sGatewayPorts, o->fwd_opts.gateway_ports);
1.182 dtucker 2600: dump_cfg_fmtint(sUseDNS, o->use_dns);
2601: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1.261 dtucker 2602: dump_cfg_fmtint(sAllowAgentForwarding, o->allow_agent_forwarding);
1.301 djm 2603: dump_cfg_fmtint(sDisableForwarding, o->disable_forwarding);
1.251 millert 2604: dump_cfg_fmtint(sAllowStreamLocalForwarding, o->allow_streamlocal_forwarding);
1.288 djm 2605: dump_cfg_fmtint(sStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
1.256 djm 2606: dump_cfg_fmtint(sFingerprintHash, o->fingerprint_hash);
1.309 djm 2607: dump_cfg_fmtint(sExposeAuthInfo, o->expose_userauth_info);
1.182 dtucker 2608:
2609: /* string arguments */
2610: dump_cfg_string(sPidFile, o->pid_file);
2611: dump_cfg_string(sXAuthLocation, o->xauth_location);
1.358 dtucker 2612: dump_cfg_string(sCiphers, o->ciphers);
2613: dump_cfg_string(sMacs, o->macs);
1.182 dtucker 2614: dump_cfg_string(sBanner, o->banner);
2615: dump_cfg_string(sForceCommand, o->adm_forced_command);
1.201 dtucker 2616: dump_cfg_string(sChrootDirectory, o->chroot_directory);
1.204 djm 2617: dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
2618: dump_cfg_string(sRevokedKeys, o->revoked_keys_file);
1.355 djm 2619: dump_cfg_string(sSecurityKeyProvider, o->sk_provider);
1.208 djm 2620: dump_cfg_string(sAuthorizedPrincipalsFile,
2621: o->authorized_principals_file);
1.261 dtucker 2622: dump_cfg_string(sVersionAddendum, *o->version_addendum == '\0'
2623: ? "none" : o->version_addendum);
1.231 djm 2624: dump_cfg_string(sAuthorizedKeysCommand, o->authorized_keys_command);
2625: dump_cfg_string(sAuthorizedKeysCommandUser, o->authorized_keys_command_user);
1.270 djm 2626: dump_cfg_string(sAuthorizedPrincipalsCommand, o->authorized_principals_command);
2627: dump_cfg_string(sAuthorizedPrincipalsCommandUser, o->authorized_principals_command_user);
1.240 markus 2628: dump_cfg_string(sHostKeyAgent, o->host_key_agent);
1.358 dtucker 2629: dump_cfg_string(sKexAlgorithms, o->kex_algorithms);
2630: dump_cfg_string(sCASignatureAlgorithms, o->ca_sign_algorithms);
2631: dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types);
2632: dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms);
2633: dump_cfg_string(sPubkeyAcceptedKeyTypes, o->pubkey_key_types);
1.316 djm 2634: dump_cfg_string(sRDomain, o->routing_domain);
1.182 dtucker 2635:
2636: /* string arguments requiring a lookup */
2637: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
2638: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
2639:
2640: /* string array arguments */
1.219 djm 2641: dump_cfg_strarray_oneline(sAuthorizedKeysFile, o->num_authkeys_files,
2642: o->authorized_keys_files);
1.182 dtucker 2643: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
2644: o->host_key_files);
1.261 dtucker 2645: dump_cfg_strarray(sHostCertificate, o->num_host_cert_files,
1.203 djm 2646: o->host_cert_files);
1.182 dtucker 2647: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
2648: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
2649: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
2650: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
2651: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1.332 djm 2652: dump_cfg_strarray(sSetEnv, o->num_setenv, o->setenv);
1.232 djm 2653: dump_cfg_strarray_oneline(sAuthenticationMethods,
2654: o->num_auth_methods, o->auth_methods);
1.182 dtucker 2655:
2656: /* other arguments */
2657: for (i = 0; i < o->num_subsystems; i++)
2658: printf("subsystem %s %s\n", o->subsystem_name[i],
2659: o->subsystem_args[i]);
2660:
2661: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
2662: o->max_startups_rate, o->max_startups);
2663:
1.318 djm 2664: s = NULL;
2665: for (i = 0; tunmode_desc[i].val != -1; i++) {
1.182 dtucker 2666: if (tunmode_desc[i].val == o->permit_tun) {
2667: s = tunmode_desc[i].text;
2668: break;
2669: }
1.318 djm 2670: }
1.182 dtucker 2671: dump_cfg_string(sPermitTunnel, s);
1.213 djm 2672:
1.214 stevesk 2673: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2674: printf("%s\n", iptos2str(o->ip_qos_bulk));
1.235 dtucker 2675:
1.284 dtucker 2676: printf("rekeylimit %llu %d\n", (unsigned long long)o->rekey_limit,
1.241 djm 2677: o->rekey_interval);
1.182 dtucker 2678:
1.310 djm 2679: printf("permitopen");
2680: if (o->num_permitted_opens == 0)
2681: printf(" any");
2682: else {
2683: for (i = 0; i < o->num_permitted_opens; i++)
2684: printf(" %s", o->permitted_opens[i]);
1.329 djm 2685: }
2686: printf("\n");
1.330 djm 2687: printf("permitlisten");
2688: if (o->num_permitted_listens == 0)
1.329 djm 2689: printf(" any");
2690: else {
1.330 djm 2691: for (i = 0; i < o->num_permitted_listens; i++)
2692: printf(" %s", o->permitted_listens[i]);
1.310 djm 2693: }
2694: printf("\n");
1.334 djm 2695:
2696: if (o->permit_user_env_whitelist == NULL) {
2697: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
2698: } else {
2699: printf("permituserenvironment %s\n",
2700: o->permit_user_env_whitelist);
2701: }
2702:
1.354 djm 2703: printf("pubkeyauthoptions");
2704: if (o->pubkey_auth_options == 0)
2705: printf(" none");
2706: if (o->pubkey_auth_options & PUBKEYAUTH_TOUCH_REQUIRED)
2707: printf(" touch-required");
2708: printf("\n");
1.1 deraadt 2709: }
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