Annotation of src/usr.bin/ssh/servconf.c, Revision 1.349
1.226 dtucker 1:
1.349 ! dtucker 2: /* $OpenBSD: servconf.c,v 1.348 2019/01/24 02:34:52 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;
1.258 djm 107: options->pubkey_key_types = NULL;
1.25 markus 108: options->kerberos_authentication = -1;
109: options->kerberos_or_local_passwd = -1;
110: options->kerberos_ticket_cleanup = -1;
1.130 jakob 111: options->kerberos_get_afs_token = -1;
1.125 markus 112: options->gss_authentication=-1;
113: options->gss_cleanup_creds = -1;
1.271 djm 114: options->gss_strict_acceptor = -1;
1.25 markus 115: options->password_authentication = -1;
1.52 markus 116: options->kbd_interactive_authentication = -1;
1.80 markus 117: options->challenge_response_authentication = -1;
1.25 markus 118: options->permit_empty_passwd = -1;
1.113 markus 119: options->permit_user_env = -1;
1.334 djm 120: options->permit_user_env_whitelist = NULL;
1.111 markus 121: options->compression = -1;
1.235 dtucker 122: options->rekey_limit = -1;
123: options->rekey_interval = -1;
1.53 markus 124: options->allow_tcp_forwarding = -1;
1.251 millert 125: options->allow_streamlocal_forwarding = -1;
1.178 pyr 126: options->allow_agent_forwarding = -1;
1.25 markus 127: options->num_allow_users = 0;
128: options->num_deny_users = 0;
129: options->num_allow_groups = 0;
130: options->num_deny_groups = 0;
1.33 markus 131: options->ciphers = NULL;
1.66 markus 132: options->macs = NULL;
1.211 djm 133: options->kex_algorithms = NULL;
1.341 djm 134: options->ca_sign_algorithms = NULL;
1.251 millert 135: options->fwd_opts.gateway_ports = -1;
136: options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
137: options->fwd_opts.streamlocal_bind_unlink = -1;
1.43 jakob 138: options->num_subsystems = 0;
1.50 markus 139: options->max_startups_begin = -1;
140: options->max_startups_rate = -1;
1.46 markus 141: options->max_startups = -1;
1.133 dtucker 142: options->max_authtries = -1;
1.180 djm 143: options->max_sessions = -1;
1.57 markus 144: options->banner = NULL;
1.122 markus 145: options->use_dns = -1;
1.77 beck 146: options->client_alive_interval = -1;
147: options->client_alive_count_max = -1;
1.219 djm 148: options->num_authkeys_files = 0;
1.131 djm 149: options->num_accept_env = 0;
1.332 djm 150: options->num_setenv = 0;
1.145 reyk 151: options->permit_tun = -1;
1.310 djm 152: options->permitted_opens = NULL;
1.330 djm 153: options->permitted_listens = NULL;
1.158 dtucker 154: options->adm_forced_command = NULL;
1.176 djm 155: options->chroot_directory = NULL;
1.231 djm 156: options->authorized_keys_command = NULL;
157: options->authorized_keys_command_user = NULL;
1.204 djm 158: options->revoked_keys_file = NULL;
159: options->trusted_user_ca_keys = NULL;
1.208 djm 160: options->authorized_principals_file = NULL;
1.270 djm 161: options->authorized_principals_command = NULL;
162: options->authorized_principals_command_user = NULL;
1.213 djm 163: options->ip_qos_interactive = -1;
164: options->ip_qos_bulk = -1;
1.225 djm 165: options->version_addendum = NULL;
1.256 djm 166: options->fingerprint_hash = -1;
1.301 djm 167: options->disable_forwarding = -1;
1.309 djm 168: options->expose_userauth_info = -1;
1.1 deraadt 169: }
170:
1.257 djm 171: /* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
172: static int
173: option_clear_or_none(const char *o)
174: {
175: return o == NULL || strcasecmp(o, "none") == 0;
176: }
177:
1.282 djm 178: static void
179: assemble_algorithms(ServerOptions *o)
180: {
1.341 djm 181: char *all_cipher, *all_mac, *all_kex, *all_key, *all_sig;
1.340 djm 182: int r;
1.335 djm 183:
184: all_cipher = cipher_alg_list(',', 0);
185: all_mac = mac_alg_list(',');
186: all_kex = kex_alg_list(',');
187: all_key = sshkey_alg_list(0, 0, 1, ',');
1.341 djm 188: all_sig = sshkey_alg_list(0, 1, 1, ',');
1.340 djm 189: #define ASSEMBLE(what, defaults, all) \
190: do { \
191: if ((r = kex_assemble_names(&o->what, defaults, all)) != 0) \
192: fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
193: } while (0)
194: ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, all_cipher);
195: ASSEMBLE(macs, KEX_SERVER_MAC, all_mac);
196: ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, all_kex);
197: ASSEMBLE(hostkeyalgorithms, KEX_DEFAULT_PK_ALG, all_key);
198: ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
199: ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
1.341 djm 200: ASSEMBLE(ca_sign_algorithms, SSH_ALLOWED_CA_SIGALGS, all_sig);
1.340 djm 201: #undef ASSEMBLE
1.335 djm 202: free(all_cipher);
203: free(all_mac);
204: free(all_kex);
205: free(all_key);
1.341 djm 206: free(all_sig);
1.282 djm 207: }
208:
1.314 djm 209: static void
1.344 djm 210: array_append2(const char *file, const int line, const char *directive,
211: char ***array, int **iarray, u_int *lp, const char *s, int i)
1.314 djm 212: {
213:
214: if (*lp >= INT_MAX)
215: fatal("%s line %d: Too many %s entries", file, line, directive);
216:
1.344 djm 217: if (iarray != NULL) {
218: *iarray = xrecallocarray(*iarray, *lp, *lp + 1,
219: sizeof(**iarray));
220: (*iarray)[*lp] = i;
221: }
222:
1.314 djm 223: *array = xrecallocarray(*array, *lp, *lp + 1, sizeof(**array));
224: (*array)[*lp] = xstrdup(s);
225: (*lp)++;
226: }
227:
1.344 djm 228: static void
229: array_append(const char *file, const int line, const char *directive,
230: char ***array, u_int *lp, const char *s)
231: {
232: array_append2(file, line, directive, array, NULL, lp, s, 0);
233: }
234:
1.314 djm 235: void
236: servconf_add_hostkey(const char *file, const int line,
1.344 djm 237: ServerOptions *options, const char *path, int userprovided)
1.314 djm 238: {
239: char *apath = derelativise_path(path);
240:
1.344 djm 241: array_append2(file, line, "HostKey",
242: &options->host_key_files, &options->host_key_file_userprovided,
243: &options->num_host_key_files, apath, userprovided);
1.314 djm 244: free(apath);
245: }
246:
247: void
248: servconf_add_hostcert(const char *file, const int line,
249: ServerOptions *options, const char *path)
250: {
251: char *apath = derelativise_path(path);
252:
253: array_append(file, line, "HostCertificate",
254: &options->host_cert_files, &options->num_host_cert_files, apath);
255: free(apath);
256: }
257:
1.34 markus 258: void
1.25 markus 259: fill_default_server_options(ServerOptions *options)
1.1 deraadt 260: {
1.314 djm 261: u_int i;
1.257 djm 262:
1.54 markus 263: if (options->num_host_key_files == 0) {
1.293 naddy 264: /* fill default hostkeys */
1.314 djm 265: servconf_add_hostkey("[default]", 0, options,
1.344 djm 266: _PATH_HOST_RSA_KEY_FILE, 0);
1.314 djm 267: servconf_add_hostkey("[default]", 0, options,
1.344 djm 268: _PATH_HOST_ECDSA_KEY_FILE, 0);
1.314 djm 269: servconf_add_hostkey("[default]", 0, options,
1.344 djm 270: _PATH_HOST_ED25519_KEY_FILE, 0);
1.326 markus 271: #ifdef WITH_XMSS
1.325 markus 272: servconf_add_hostkey("[default]", 0, options,
1.344 djm 273: _PATH_HOST_XMSS_KEY_FILE, 0);
1.326 markus 274: #endif /* WITH_XMSS */
1.54 markus 275: }
1.203 djm 276: /* No certificates by default */
1.29 markus 277: if (options->num_ports == 0)
278: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.266 dtucker 279: if (options->address_family == -1)
280: options->address_family = AF_UNSPEC;
1.29 markus 281: if (options->listen_addrs == NULL)
1.315 djm 282: add_listen_addr(options, NULL, NULL, 0);
1.36 markus 283: if (options->pid_file == NULL)
1.257 djm 284: options->pid_file = xstrdup(_PATH_SSH_DAEMON_PID_FILE);
1.25 markus 285: if (options->login_grace_time == -1)
1.115 stevesk 286: options->login_grace_time = 120;
1.67 markus 287: if (options->permit_root_login == PERMIT_NOT_SET)
1.279 chris 288: options->permit_root_login = PERMIT_NO_PASSWD;
1.25 markus 289: if (options->ignore_rhosts == -1)
1.30 markus 290: options->ignore_rhosts = 1;
1.25 markus 291: if (options->ignore_user_known_hosts == -1)
292: options->ignore_user_known_hosts = 0;
293: if (options->print_motd == -1)
294: options->print_motd = 1;
1.72 stevesk 295: if (options->print_lastlog == -1)
296: options->print_lastlog = 1;
1.25 markus 297: if (options->x11_forwarding == -1)
1.30 markus 298: options->x11_forwarding = 0;
1.25 markus 299: if (options->x11_display_offset == -1)
1.30 markus 300: options->x11_display_offset = 10;
1.99 stevesk 301: if (options->x11_use_localhost == -1)
302: options->x11_use_localhost = 1;
1.42 markus 303: if (options->xauth_location == NULL)
1.257 djm 304: options->xauth_location = xstrdup(_PATH_XAUTH);
1.244 djm 305: if (options->permit_tty == -1)
306: options->permit_tty = 1;
1.250 djm 307: if (options->permit_user_rc == -1)
308: options->permit_user_rc = 1;
1.25 markus 309: if (options->strict_modes == -1)
310: options->strict_modes = 1;
1.129 markus 311: if (options->tcp_keep_alive == -1)
312: options->tcp_keep_alive = 1;
1.101 markus 313: if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
1.25 markus 314: options->log_facility = SYSLOG_FACILITY_AUTH;
1.101 markus 315: if (options->log_level == SYSLOG_LEVEL_NOT_SET)
1.58 markus 316: options->log_level = SYSLOG_LEVEL_INFO;
1.75 markus 317: if (options->hostbased_authentication == -1)
318: options->hostbased_authentication = 0;
319: if (options->hostbased_uses_name_from_packet_only == -1)
320: options->hostbased_uses_name_from_packet_only = 0;
1.54 markus 321: if (options->pubkey_authentication == -1)
322: options->pubkey_authentication = 1;
1.25 markus 323: if (options->kerberos_authentication == -1)
1.107 markus 324: options->kerberos_authentication = 0;
1.25 markus 325: if (options->kerberos_or_local_passwd == -1)
326: options->kerberos_or_local_passwd = 1;
327: if (options->kerberos_ticket_cleanup == -1)
328: options->kerberos_ticket_cleanup = 1;
1.130 jakob 329: if (options->kerberos_get_afs_token == -1)
330: options->kerberos_get_afs_token = 0;
1.125 markus 331: if (options->gss_authentication == -1)
332: options->gss_authentication = 0;
333: if (options->gss_cleanup_creds == -1)
334: options->gss_cleanup_creds = 1;
1.271 djm 335: if (options->gss_strict_acceptor == -1)
1.302 djm 336: options->gss_strict_acceptor = 1;
1.25 markus 337: if (options->password_authentication == -1)
338: options->password_authentication = 1;
1.52 markus 339: if (options->kbd_interactive_authentication == -1)
340: options->kbd_interactive_authentication = 0;
1.80 markus 341: if (options->challenge_response_authentication == -1)
342: options->challenge_response_authentication = 1;
1.25 markus 343: if (options->permit_empty_passwd == -1)
1.30 markus 344: options->permit_empty_passwd = 0;
1.334 djm 345: if (options->permit_user_env == -1) {
1.113 markus 346: options->permit_user_env = 0;
1.334 djm 347: options->permit_user_env_whitelist = NULL;
348: }
1.111 markus 349: if (options->compression == -1)
1.337 sf 350: options->compression = COMP_DELAYED;
1.235 dtucker 351: if (options->rekey_limit == -1)
352: options->rekey_limit = 0;
353: if (options->rekey_interval == -1)
354: options->rekey_interval = 0;
1.53 markus 355: if (options->allow_tcp_forwarding == -1)
1.233 djm 356: options->allow_tcp_forwarding = FORWARD_ALLOW;
1.251 millert 357: if (options->allow_streamlocal_forwarding == -1)
358: options->allow_streamlocal_forwarding = FORWARD_ALLOW;
1.178 pyr 359: if (options->allow_agent_forwarding == -1)
360: options->allow_agent_forwarding = 1;
1.251 millert 361: if (options->fwd_opts.gateway_ports == -1)
362: options->fwd_opts.gateway_ports = 0;
1.46 markus 363: if (options->max_startups == -1)
1.234 dtucker 364: options->max_startups = 100;
1.50 markus 365: if (options->max_startups_rate == -1)
1.234 dtucker 366: options->max_startups_rate = 30; /* 30% */
1.50 markus 367: if (options->max_startups_begin == -1)
1.234 dtucker 368: options->max_startups_begin = 10;
1.133 dtucker 369: if (options->max_authtries == -1)
370: options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
1.180 djm 371: if (options->max_sessions == -1)
372: options->max_sessions = DEFAULT_SESSIONS_MAX;
1.122 markus 373: if (options->use_dns == -1)
1.260 deraadt 374: options->use_dns = 0;
1.77 beck 375: if (options->client_alive_interval == -1)
1.95 deraadt 376: options->client_alive_interval = 0;
1.77 beck 377: if (options->client_alive_count_max == -1)
378: options->client_alive_count_max = 3;
1.219 djm 379: if (options->num_authkeys_files == 0) {
1.314 djm 380: array_append("[default]", 0, "AuthorizedKeysFiles",
381: &options->authorized_keys_files,
382: &options->num_authkeys_files,
383: _PATH_SSH_USER_PERMITTED_KEYS);
384: array_append("[default]", 0, "AuthorizedKeysFiles",
385: &options->authorized_keys_files,
386: &options->num_authkeys_files,
387: _PATH_SSH_USER_PERMITTED_KEYS2);
1.219 djm 388: }
1.145 reyk 389: if (options->permit_tun == -1)
1.146 reyk 390: options->permit_tun = SSH_TUNMODE_NO;
1.213 djm 391: if (options->ip_qos_interactive == -1)
1.327 job 392: options->ip_qos_interactive = IPTOS_DSCP_AF21;
1.213 djm 393: if (options->ip_qos_bulk == -1)
1.327 job 394: options->ip_qos_bulk = IPTOS_DSCP_CS1;
1.225 djm 395: if (options->version_addendum == NULL)
396: options->version_addendum = xstrdup("");
1.251 millert 397: if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
398: options->fwd_opts.streamlocal_bind_mask = 0177;
399: if (options->fwd_opts.streamlocal_bind_unlink == -1)
400: options->fwd_opts.streamlocal_bind_unlink = 0;
1.256 djm 401: if (options->fingerprint_hash == -1)
402: options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
1.301 djm 403: if (options->disable_forwarding == -1)
404: options->disable_forwarding = 0;
1.309 djm 405: if (options->expose_userauth_info == -1)
406: options->expose_userauth_info = 0;
1.277 djm 407:
1.282 djm 408: assemble_algorithms(options);
1.277 djm 409:
1.285 djm 410: /* Turn privilege separation and sandboxing on by default */
1.102 provos 411: if (use_privsep == -1)
1.285 djm 412: use_privsep = PRIVSEP_ON;
1.257 djm 413:
414: #define CLEAR_ON_NONE(v) \
415: do { \
416: if (option_clear_or_none(v)) { \
417: free(v); \
418: v = NULL; \
419: } \
420: } while(0)
421: CLEAR_ON_NONE(options->pid_file);
422: CLEAR_ON_NONE(options->xauth_location);
423: CLEAR_ON_NONE(options->banner);
424: CLEAR_ON_NONE(options->trusted_user_ca_keys);
425: CLEAR_ON_NONE(options->revoked_keys_file);
1.267 djm 426: CLEAR_ON_NONE(options->authorized_principals_file);
1.283 djm 427: CLEAR_ON_NONE(options->adm_forced_command);
428: CLEAR_ON_NONE(options->chroot_directory);
1.316 djm 429: CLEAR_ON_NONE(options->routing_domain);
1.257 djm 430: for (i = 0; i < options->num_host_key_files; i++)
431: CLEAR_ON_NONE(options->host_key_files[i]);
432: for (i = 0; i < options->num_host_cert_files; i++)
433: CLEAR_ON_NONE(options->host_cert_files[i]);
434: #undef CLEAR_ON_NONE
1.291 djm 435:
436: /* Similar handling for AuthenticationMethods=any */
437: if (options->num_auth_methods == 1 &&
438: strcmp(options->auth_methods[0], "any") == 0) {
439: free(options->auth_methods[0]);
440: options->auth_methods[0] = NULL;
441: options->num_auth_methods = 0;
442: }
443:
1.1 deraadt 444: }
445:
446: /* Keyword tokens. */
1.25 markus 447: typedef enum {
448: sBadOption, /* == unknown option */
1.293 naddy 449: sPort, sHostKeyFile, sLoginGraceTime,
450: sPermitRootLogin, sLogFacility, sLogLevel,
1.25 markus 451: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.323 dtucker 452: sKerberosGetAFSToken, sChallengeResponseAuthentication,
1.138 djm 453: sPasswordAuthentication, sKbdInteractiveAuthentication,
454: sListenAddress, sAddressFamily,
1.72 stevesk 455: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
1.99 stevesk 456: sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
1.244 djm 457: sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
1.294 djm 458: sPermitUserEnvironment, sAllowTcpForwarding, sCompression,
1.235 dtucker 459: sRekeyLimit, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.293 naddy 460: sIgnoreUserKnownHosts, sCiphers, sMacs, sPidFile,
1.258 djm 461: sGatewayPorts, sPubkeyAuthentication, sPubkeyAcceptedKeyTypes,
462: sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
1.122 markus 463: sBanner, sUseDNS, sHostbasedAuthentication,
1.258 djm 464: sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
1.276 markus 465: sHostKeyAlgorithms,
1.258 djm 466: sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
1.271 djm 467: sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
1.332 djm 468: sAcceptEnv, sSetEnv, sPermitTunnel,
1.330 djm 469: sMatch, sPermitOpen, sPermitListen, sForceCommand, sChrootDirectory,
1.200 dtucker 470: sUsePrivilegeSeparation, sAllowAgentForwarding,
1.249 djm 471: sHostCertificate,
1.208 djm 472: sRevokedKeys, sTrustedUserCAKeys, sAuthorizedPrincipalsFile,
1.270 djm 473: sAuthorizedPrincipalsCommand, sAuthorizedPrincipalsCommandUser,
1.341 djm 474: sKexAlgorithms, sCASignatureAlgorithms, sIPQoS, sVersionAddendum,
1.231 djm 475: sAuthorizedKeysCommand, sAuthorizedKeysCommandUser,
1.250 djm 476: sAuthenticationMethods, sHostKeyAgent, sPermitUserRC,
1.251 millert 477: sStreamLocalBindMask, sStreamLocalBindUnlink,
1.301 djm 478: sAllowStreamLocalForwarding, sFingerprintHash, sDisableForwarding,
1.316 djm 479: sExposeAuthInfo, sRDomain,
1.295 djm 480: sDeprecated, sIgnore, sUnsupported
1.1 deraadt 481: } ServerOpCodes;
482:
1.153 dtucker 483: #define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */
484: #define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
485: #define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
486:
1.1 deraadt 487: /* Textual representation of the tokens. */
1.25 markus 488: static struct {
489: const char *name;
490: ServerOpCodes opcode;
1.153 dtucker 491: u_int flags;
1.25 markus 492: } keywords[] = {
1.153 dtucker 493: { "port", sPort, SSHCFG_GLOBAL },
494: { "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
495: { "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
1.240 markus 496: { "hostkeyagent", sHostKeyAgent, SSHCFG_GLOBAL },
1.153 dtucker 497: { "pidfile", sPidFile, SSHCFG_GLOBAL },
1.293 naddy 498: { "serverkeybits", sDeprecated, SSHCFG_GLOBAL },
1.153 dtucker 499: { "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
1.293 naddy 500: { "keyregenerationinterval", sDeprecated, SSHCFG_GLOBAL },
1.175 dtucker 501: { "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
1.153 dtucker 502: { "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
1.308 djm 503: { "loglevel", sLogLevel, SSHCFG_ALL },
1.153 dtucker 504: { "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
1.293 naddy 505: { "rhostsrsaauthentication", sDeprecated, SSHCFG_ALL },
1.168 dtucker 506: { "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
1.209 djm 507: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
1.258 djm 508: { "hostbasedacceptedkeytypes", sHostbasedAcceptedKeyTypes, SSHCFG_ALL },
1.276 markus 509: { "hostkeyalgorithms", sHostKeyAlgorithms, SSHCFG_GLOBAL },
1.293 naddy 510: { "rsaauthentication", sDeprecated, SSHCFG_ALL },
1.168 dtucker 511: { "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
1.258 djm 512: { "pubkeyacceptedkeytypes", sPubkeyAcceptedKeyTypes, SSHCFG_ALL },
1.153 dtucker 513: { "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
1.123 markus 514: #ifdef KRB5
1.168 dtucker 515: { "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
1.153 dtucker 516: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
517: { "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
518: { "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
1.121 jakob 519: #else
1.168 dtucker 520: { "kerberosauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 521: { "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
522: { "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
523: { "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
1.126 markus 524: #endif
1.153 dtucker 525: { "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
526: { "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 527: #ifdef GSSAPI
1.168 dtucker 528: { "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
1.153 dtucker 529: { "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
1.271 djm 530: { "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
1.125 markus 531: #else
1.168 dtucker 532: { "gssapiauthentication", sUnsupported, SSHCFG_ALL },
1.153 dtucker 533: { "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
1.271 djm 534: { "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
1.125 markus 535: #endif
1.168 dtucker 536: { "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
537: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
1.170 dtucker 538: { "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
1.153 dtucker 539: { "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */
540: { "checkmail", sDeprecated, SSHCFG_GLOBAL },
541: { "listenaddress", sListenAddress, SSHCFG_GLOBAL },
542: { "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
543: { "printmotd", sPrintMotd, SSHCFG_GLOBAL },
544: { "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
545: { "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL },
546: { "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
1.157 dtucker 547: { "x11forwarding", sX11Forwarding, SSHCFG_ALL },
548: { "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
549: { "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
1.153 dtucker 550: { "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
551: { "strictmodes", sStrictModes, SSHCFG_GLOBAL },
1.188 djm 552: { "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
1.153 dtucker 553: { "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
1.294 djm 554: { "uselogin", sDeprecated, SSHCFG_GLOBAL },
1.153 dtucker 555: { "compression", sCompression, SSHCFG_GLOBAL },
1.235 dtucker 556: { "rekeylimit", sRekeyLimit, SSHCFG_ALL },
1.153 dtucker 557: { "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
558: { "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
559: { "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
1.178 pyr 560: { "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
1.227 markus 561: { "allowusers", sAllowUsers, SSHCFG_ALL },
562: { "denyusers", sDenyUsers, SSHCFG_ALL },
563: { "allowgroups", sAllowGroups, SSHCFG_ALL },
564: { "denygroups", sDenyGroups, SSHCFG_ALL },
1.153 dtucker 565: { "ciphers", sCiphers, SSHCFG_GLOBAL },
566: { "macs", sMacs, SSHCFG_GLOBAL },
1.295 djm 567: { "protocol", sIgnore, SSHCFG_GLOBAL },
1.153 dtucker 568: { "gatewayports", sGatewayPorts, SSHCFG_ALL },
569: { "subsystem", sSubsystem, SSHCFG_GLOBAL },
570: { "maxstartups", sMaxStartups, SSHCFG_GLOBAL },
1.184 dtucker 571: { "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
1.180 djm 572: { "maxsessions", sMaxSessions, SSHCFG_ALL },
1.168 dtucker 573: { "banner", sBanner, SSHCFG_ALL },
1.153 dtucker 574: { "usedns", sUseDNS, SSHCFG_GLOBAL },
575: { "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
576: { "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
1.300 markus 577: { "clientaliveinterval", sClientAliveInterval, SSHCFG_ALL },
578: { "clientalivecountmax", sClientAliveCountMax, SSHCFG_ALL },
1.209 djm 579: { "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_ALL },
1.219 djm 580: { "authorizedkeysfile2", sDeprecated, SSHCFG_ALL },
1.306 djm 581: { "useprivilegeseparation", sDeprecated, SSHCFG_GLOBAL},
1.227 markus 582: { "acceptenv", sAcceptEnv, SSHCFG_ALL },
1.332 djm 583: { "setenv", sSetEnv, SSHCFG_ALL },
1.209 djm 584: { "permittunnel", sPermitTunnel, SSHCFG_ALL },
1.244 djm 585: { "permittty", sPermitTTY, SSHCFG_ALL },
1.250 djm 586: { "permituserrc", sPermitUserRC, SSHCFG_ALL },
1.153 dtucker 587: { "match", sMatch, SSHCFG_ALL },
1.156 dtucker 588: { "permitopen", sPermitOpen, SSHCFG_ALL },
1.330 djm 589: { "permitlisten", sPermitListen, SSHCFG_ALL },
1.158 dtucker 590: { "forcecommand", sForceCommand, SSHCFG_ALL },
1.176 djm 591: { "chrootdirectory", sChrootDirectory, SSHCFG_ALL },
1.203 djm 592: { "hostcertificate", sHostCertificate, SSHCFG_GLOBAL },
1.204 djm 593: { "revokedkeys", sRevokedKeys, SSHCFG_ALL },
594: { "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
1.209 djm 595: { "authorizedprincipalsfile", sAuthorizedPrincipalsFile, SSHCFG_ALL },
1.211 djm 596: { "kexalgorithms", sKexAlgorithms, SSHCFG_GLOBAL },
1.213 djm 597: { "ipqos", sIPQoS, SSHCFG_ALL },
1.231 djm 598: { "authorizedkeyscommand", sAuthorizedKeysCommand, SSHCFG_ALL },
599: { "authorizedkeyscommanduser", sAuthorizedKeysCommandUser, SSHCFG_ALL },
1.270 djm 600: { "authorizedprincipalscommand", sAuthorizedPrincipalsCommand, SSHCFG_ALL },
601: { "authorizedprincipalscommanduser", sAuthorizedPrincipalsCommandUser, SSHCFG_ALL },
1.225 djm 602: { "versionaddendum", sVersionAddendum, SSHCFG_GLOBAL },
1.232 djm 603: { "authenticationmethods", sAuthenticationMethods, SSHCFG_ALL },
1.251 millert 604: { "streamlocalbindmask", sStreamLocalBindMask, SSHCFG_ALL },
605: { "streamlocalbindunlink", sStreamLocalBindUnlink, SSHCFG_ALL },
606: { "allowstreamlocalforwarding", sAllowStreamLocalForwarding, SSHCFG_ALL },
1.256 djm 607: { "fingerprinthash", sFingerprintHash, SSHCFG_GLOBAL },
1.301 djm 608: { "disableforwarding", sDisableForwarding, SSHCFG_ALL },
1.309 djm 609: { "exposeauthinfo", sExposeAuthInfo, SSHCFG_ALL },
1.316 djm 610: { "rdomain", sRDomain, SSHCFG_ALL },
1.342 djm 611: { "casignaturealgorithms", sCASignatureAlgorithms, SSHCFG_ALL },
1.153 dtucker 612: { NULL, sBadOption, 0 }
1.1 deraadt 613: };
614:
1.182 dtucker 615: static struct {
616: int val;
617: char *text;
618: } tunmode_desc[] = {
619: { SSH_TUNMODE_NO, "no" },
620: { SSH_TUNMODE_POINTOPOINT, "point-to-point" },
621: { SSH_TUNMODE_ETHERNET, "ethernet" },
622: { SSH_TUNMODE_YES, "yes" },
623: { -1, NULL }
624: };
625:
1.329 djm 626: /* Returns an opcode name from its number */
627:
628: static const char *
629: lookup_opcode_name(ServerOpCodes code)
630: {
631: u_int i;
632:
633: for (i = 0; keywords[i].name != NULL; i++)
634: if (keywords[i].opcode == code)
635: return(keywords[i].name);
636: return "UNKNOWN";
637: }
638:
639:
1.27 markus 640: /*
1.73 stevesk 641: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 642: */
1.1 deraadt 643:
1.34 markus 644: static ServerOpCodes
1.25 markus 645: parse_token(const char *cp, const char *filename,
1.153 dtucker 646: int linenum, u_int *flags)
1.1 deraadt 647: {
1.55 markus 648: u_int i;
1.1 deraadt 649:
1.25 markus 650: for (i = 0; keywords[i].name; i++)
1.153 dtucker 651: if (strcasecmp(cp, keywords[i].name) == 0) {
652: *flags = keywords[i].flags;
1.25 markus 653: return keywords[i].opcode;
1.153 dtucker 654: }
1.25 markus 655:
1.78 stevesk 656: error("%s: line %d: Bad configuration option: %s",
657: filename, linenum, cp);
1.25 markus 658: return sBadOption;
1.1 deraadt 659: }
660:
1.202 djm 661: char *
662: derelativise_path(const char *path)
663: {
1.259 deraadt 664: char *expanded, *ret, cwd[PATH_MAX];
1.202 djm 665:
1.257 djm 666: if (strcasecmp(path, "none") == 0)
667: return xstrdup("none");
1.202 djm 668: expanded = tilde_expand_filename(path, getuid());
1.343 djm 669: if (path_absolute(expanded))
1.202 djm 670: return expanded;
1.207 djm 671: if (getcwd(cwd, sizeof(cwd)) == NULL)
1.202 djm 672: fatal("%s: getcwd: %s", __func__, strerror(errno));
673: xasprintf(&ret, "%s/%s", cwd, expanded);
1.239 djm 674: free(expanded);
1.202 djm 675: return ret;
676: }
677:
1.84 itojun 678: static void
1.315 djm 679: add_listen_addr(ServerOptions *options, const char *addr,
680: const char *rdomain, int port)
1.74 stevesk 681: {
1.142 djm 682: u_int i;
1.74 stevesk 683:
1.315 djm 684: if (port > 0)
685: add_one_listen_addr(options, addr, rdomain, port);
686: else {
687: for (i = 0; i < options->num_ports; i++) {
688: add_one_listen_addr(options, addr, rdomain,
689: options->ports[i]);
690: }
691: }
1.74 stevesk 692: }
693:
1.84 itojun 694: static void
1.315 djm 695: add_one_listen_addr(ServerOptions *options, const char *addr,
696: const char *rdomain, int port)
1.29 markus 697: {
698: struct addrinfo hints, *ai, *aitop;
699: char strport[NI_MAXSERV];
700: int gaierr;
1.315 djm 701: u_int i;
702:
703: /* Find listen_addrs entry for this rdomain */
704: for (i = 0; i < options->num_listen_addrs; i++) {
705: if (rdomain == NULL && options->listen_addrs[i].rdomain == NULL)
706: break;
707: if (rdomain == NULL || options->listen_addrs[i].rdomain == NULL)
708: continue;
709: if (strcmp(rdomain, options->listen_addrs[i].rdomain) == 0)
710: break;
711: }
712: if (i >= options->num_listen_addrs) {
713: /* No entry for this rdomain; allocate one */
714: if (i >= INT_MAX)
715: fatal("%s: too many listen addresses", __func__);
716: options->listen_addrs = xrecallocarray(options->listen_addrs,
717: options->num_listen_addrs, options->num_listen_addrs + 1,
718: sizeof(*options->listen_addrs));
719: i = options->num_listen_addrs++;
720: if (rdomain != NULL)
721: options->listen_addrs[i].rdomain = xstrdup(rdomain);
722: }
723: /* options->listen_addrs[i] points to the addresses for this rdomain */
1.29 markus 724:
1.74 stevesk 725: memset(&hints, 0, sizeof(hints));
1.138 djm 726: hints.ai_family = options->address_family;
1.74 stevesk 727: hints.ai_socktype = SOCK_STREAM;
728: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
1.194 djm 729: snprintf(strport, sizeof strport, "%d", port);
1.74 stevesk 730: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
731: fatal("bad addr or host: %s (%s)",
732: addr ? addr : "<NULL>",
1.173 dtucker 733: ssh_gai_strerror(gaierr));
1.74 stevesk 734: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
735: ;
1.315 djm 736: ai->ai_next = options->listen_addrs[i].addrs;
737: options->listen_addrs[i].addrs = aitop;
738: }
739:
740: /* Returns nonzero if the routing domain name is valid */
741: static int
742: valid_rdomain(const char *name)
743: {
744: const char *errstr;
745: long long num;
746: struct rt_tableinfo info;
747: int mib[6];
748: size_t miblen = sizeof(mib);
749:
750: if (name == NULL)
751: return 1;
752:
753: num = strtonum(name, 0, 255, &errstr);
754: if (errstr != NULL)
755: return 0;
756:
757: /* Check whether the table actually exists */
758: memset(mib, 0, sizeof(mib));
759: mib[0] = CTL_NET;
760: mib[1] = PF_ROUTE;
761: mib[4] = NET_RT_TABLE;
762: mib[5] = (int)num;
763: if (sysctl(mib, 6, &info, &miblen, NULL, 0) == -1)
764: return 0;
765:
766: return 1;
1.29 markus 767: }
768:
1.266 dtucker 769: /*
770: * Queue a ListenAddress to be processed once we have all of the Ports
771: * and AddressFamily options.
772: */
773: static void
1.315 djm 774: queue_listen_addr(ServerOptions *options, const char *addr,
775: const char *rdomain, int port)
1.266 dtucker 776: {
1.315 djm 777: struct queued_listenaddr *qla;
778:
779: options->queued_listen_addrs = xrecallocarray(
780: options->queued_listen_addrs,
781: options->num_queued_listens, options->num_queued_listens + 1,
782: sizeof(*options->queued_listen_addrs));
783: qla = &options->queued_listen_addrs[options->num_queued_listens++];
784: qla->addr = xstrdup(addr);
785: qla->port = port;
786: qla->rdomain = rdomain == NULL ? NULL : xstrdup(rdomain);
1.266 dtucker 787: }
788:
789: /*
790: * Process queued (text) ListenAddress entries.
791: */
792: static void
793: process_queued_listen_addrs(ServerOptions *options)
794: {
795: u_int i;
1.315 djm 796: struct queued_listenaddr *qla;
1.266 dtucker 797:
798: if (options->num_ports == 0)
799: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
800: if (options->address_family == -1)
801: options->address_family = AF_UNSPEC;
802:
803: for (i = 0; i < options->num_queued_listens; i++) {
1.315 djm 804: qla = &options->queued_listen_addrs[i];
805: add_listen_addr(options, qla->addr, qla->rdomain, qla->port);
806: free(qla->addr);
807: free(qla->rdomain);
1.266 dtucker 808: }
809: free(options->queued_listen_addrs);
810: options->queued_listen_addrs = NULL;
811: options->num_queued_listens = 0;
812: }
813:
1.310 djm 814: /*
1.329 djm 815: * Inform channels layer of permitopen options for a single forwarding
816: * direction (local/remote).
1.310 djm 817: */
1.329 djm 818: static void
819: process_permitopen_list(struct ssh *ssh, ServerOpCodes opcode,
820: char **opens, u_int num_opens)
1.310 djm 821: {
822: u_int i;
823: int port;
1.347 dtucker 824: char *host, *arg, *oarg, ch;
1.329 djm 825: int where = opcode == sPermitOpen ? FORWARD_LOCAL : FORWARD_REMOTE;
826: const char *what = lookup_opcode_name(opcode);
1.310 djm 827:
1.329 djm 828: channel_clear_permission(ssh, FORWARD_ADM, where);
829: if (num_opens == 0)
1.310 djm 830: return; /* permit any */
831:
832: /* handle keywords: "any" / "none" */
1.329 djm 833: if (num_opens == 1 && strcmp(opens[0], "any") == 0)
1.310 djm 834: return;
1.329 djm 835: if (num_opens == 1 && strcmp(opens[0], "none") == 0) {
836: channel_disable_admin(ssh, where);
1.310 djm 837: return;
838: }
839: /* Otherwise treat it as a list of permitted host:port */
1.329 djm 840: for (i = 0; i < num_opens; i++) {
841: oarg = arg = xstrdup(opens[i]);
1.348 dtucker 842: ch = '\0';
1.347 dtucker 843: host = hpdelim2(&arg, &ch);
844: if (host == NULL || ch == '/')
1.329 djm 845: fatal("%s: missing host in %s", __func__, what);
1.310 djm 846: host = cleanhostname(host);
847: if (arg == NULL || ((port = permitopen_port(arg)) < 0))
1.329 djm 848: fatal("%s: bad port number in %s", __func__, what);
1.310 djm 849: /* Send it to channels layer */
1.329 djm 850: channel_add_permission(ssh, FORWARD_ADM,
851: where, host, port);
1.310 djm 852: free(oarg);
853: }
854: }
855:
1.329 djm 856: /*
857: * Inform channels layer of permitopen options from configuration.
858: */
859: void
860: process_permitopen(struct ssh *ssh, ServerOptions *options)
861: {
862: process_permitopen_list(ssh, sPermitOpen,
863: options->permitted_opens, options->num_permitted_opens);
1.330 djm 864: process_permitopen_list(ssh, sPermitListen,
865: options->permitted_listens,
866: options->num_permitted_listens);
1.329 djm 867: }
868:
1.226 dtucker 869: struct connection_info *
1.346 djm 870: get_connection_info(struct ssh *ssh, int populate, int use_dns)
1.226 dtucker 871: {
872: static struct connection_info ci;
873:
1.346 djm 874: if (ssh == NULL || !populate)
1.226 dtucker 875: return &ci;
1.286 djm 876: ci.host = auth_get_canonical_hostname(ssh, use_dns);
877: ci.address = ssh_remote_ipaddr(ssh);
878: ci.laddress = ssh_local_ipaddr(ssh);
879: ci.lport = ssh_local_port(ssh);
1.317 djm 880: ci.rdomain = ssh_packet_rdomain_in(ssh);
1.226 dtucker 881: return &ci;
882: }
883:
1.153 dtucker 884: /*
885: * The strategy for the Match blocks is that the config file is parsed twice.
886: *
887: * The first time is at startup. activep is initialized to 1 and the
888: * directives in the global context are processed and acted on. Hitting a
889: * Match directive unsets activep and the directives inside the block are
890: * checked for syntax only.
891: *
892: * The second time is after a connection has been established but before
893: * authentication. activep is initialized to 2 and global config directives
894: * are ignored since they have already been processed. If the criteria in a
895: * Match block is met, activep is set and the subsequent directives
896: * processed and actioned until EOF or another Match block unsets it. Any
897: * options set are copied into the main server config.
898: *
899: * Potential additions/improvements:
1.295 djm 900: * - Add Match support for pre-kex directives, eg. Ciphers.
1.153 dtucker 901: *
902: * - Add a Tag directive (idea from David Leonard) ala pf, eg:
903: * Match Address 192.168.0.*
904: * Tag trusted
905: * Match Group wheel
906: * Tag trusted
907: * Match Tag trusted
908: * AllowTcpForwarding yes
909: * GatewayPorts clientspecified
910: * [...]
911: *
912: * - Add a PermittedChannelRequests directive
913: * Match Group shell
914: * PermittedChannelRequests session,forwarded-tcpip
915: */
916:
917: static int
1.165 dtucker 918: match_cfg_line_group(const char *grps, int line, const char *user)
919: {
920: int result = 0;
921: struct passwd *pw;
922:
923: if (user == NULL)
924: goto out;
925:
926: if ((pw = getpwnam(user)) == NULL) {
927: debug("Can't match group at line %d because user %.100s does "
928: "not exist", line, user);
929: } else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
930: debug("Can't Match group because user %.100s not in any group "
931: "at line %d", user, line);
1.186 djm 932: } else if (ga_match_pattern_list(grps) != 1) {
933: debug("user %.100s does not match group list %.100s at line %d",
934: user, grps, line);
1.165 dtucker 935: } else {
1.186 djm 936: debug("user %.100s matched group list %.100s at line %d", user,
937: grps, line);
1.165 dtucker 938: result = 1;
939: }
940: out:
941: ga_free();
942: return result;
943: }
944:
1.319 dtucker 945: static void
946: match_test_missing_fatal(const char *criteria, const char *attrib)
947: {
948: fatal("'Match %s' in configuration but '%s' not in connection "
949: "test specification.", criteria, attrib);
950: }
951:
1.226 dtucker 952: /*
1.230 dtucker 953: * All of the attributes on a single Match line are ANDed together, so we need
1.242 dtucker 954: * to check every attribute and set the result to zero if any attribute does
1.230 dtucker 955: * not match.
1.226 dtucker 956: */
1.165 dtucker 957: static int
1.226 dtucker 958: match_cfg_line(char **condition, int line, struct connection_info *ci)
1.153 dtucker 959: {
1.243 dtucker 960: int result = 1, attributes = 0, port;
1.153 dtucker 961: char *arg, *attrib, *cp = *condition;
962:
1.226 dtucker 963: if (ci == NULL)
1.153 dtucker 964: debug3("checking syntax for 'Match %s'", cp);
965: else
1.226 dtucker 966: debug3("checking match for '%s' user %s host %s addr %s "
967: "laddr %s lport %d", cp, ci->user ? ci->user : "(null)",
968: ci->host ? ci->host : "(null)",
969: ci->address ? ci->address : "(null)",
970: ci->laddress ? ci->laddress : "(null)", ci->lport);
1.153 dtucker 971:
972: while ((attrib = strdelim(&cp)) && *attrib != '\0') {
1.243 dtucker 973: attributes++;
974: if (strcasecmp(attrib, "all") == 0) {
975: if (attributes != 1 ||
976: ((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
977: error("'all' cannot be combined with other "
978: "Match attributes");
979: return -1;
980: }
981: *condition = cp;
982: return 1;
983: }
1.153 dtucker 984: if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
985: error("Missing Match criteria for %s", attrib);
986: return -1;
987: }
988: if (strcasecmp(attrib, "user") == 0) {
1.319 dtucker 989: if (ci == NULL) {
1.153 dtucker 990: result = 0;
991: continue;
992: }
1.319 dtucker 993: if (ci->user == NULL)
994: match_test_missing_fatal("User", "user");
1.349 ! dtucker 995: if (match_usergroup_pattern_list(ci->user, arg) != 1)
1.153 dtucker 996: result = 0;
997: else
998: debug("user %.100s matched 'User %.100s' at "
1.226 dtucker 999: "line %d", ci->user, arg, line);
1.165 dtucker 1000: } else if (strcasecmp(attrib, "group") == 0) {
1.319 dtucker 1001: if (ci == NULL) {
1.226 dtucker 1002: result = 0;
1003: continue;
1004: }
1.319 dtucker 1005: if (ci->user == NULL)
1006: match_test_missing_fatal("Group", "user");
1.226 dtucker 1007: switch (match_cfg_line_group(arg, line, ci->user)) {
1.165 dtucker 1008: case -1:
1009: return -1;
1010: case 0:
1011: result = 0;
1012: }
1.153 dtucker 1013: } else if (strcasecmp(attrib, "host") == 0) {
1.319 dtucker 1014: if (ci == NULL) {
1.153 dtucker 1015: result = 0;
1016: continue;
1017: }
1.319 dtucker 1018: if (ci->host == NULL)
1019: match_test_missing_fatal("Host", "host");
1.269 djm 1020: if (match_hostname(ci->host, arg) != 1)
1.153 dtucker 1021: result = 0;
1022: else
1023: debug("connection from %.100s matched 'Host "
1.226 dtucker 1024: "%.100s' at line %d", ci->host, arg, line);
1.153 dtucker 1025: } else if (strcasecmp(attrib, "address") == 0) {
1.319 dtucker 1026: if (ci == NULL) {
1.226 dtucker 1027: result = 0;
1028: continue;
1029: }
1.319 dtucker 1030: if (ci->address == NULL)
1031: match_test_missing_fatal("Address", "addr");
1.226 dtucker 1032: switch (addr_match_list(ci->address, arg)) {
1.181 djm 1033: case 1:
1034: debug("connection from %.100s matched 'Address "
1.226 dtucker 1035: "%.100s' at line %d", ci->address, arg, line);
1.181 djm 1036: break;
1037: case 0:
1.183 djm 1038: case -1:
1.153 dtucker 1039: result = 0;
1.181 djm 1040: break;
1.183 djm 1041: case -2:
1.181 djm 1042: return -1;
1.153 dtucker 1043: }
1.226 dtucker 1044: } else if (strcasecmp(attrib, "localaddress") == 0){
1.319 dtucker 1045: if (ci == NULL) {
1.226 dtucker 1046: result = 0;
1047: continue;
1048: }
1.319 dtucker 1049: if (ci->laddress == NULL)
1050: match_test_missing_fatal("LocalAddress",
1051: "laddr");
1.226 dtucker 1052: switch (addr_match_list(ci->laddress, arg)) {
1053: case 1:
1054: debug("connection from %.100s matched "
1055: "'LocalAddress %.100s' at line %d",
1056: ci->laddress, arg, line);
1057: break;
1058: case 0:
1059: case -1:
1060: result = 0;
1061: break;
1062: case -2:
1063: return -1;
1064: }
1065: } else if (strcasecmp(attrib, "localport") == 0) {
1066: if ((port = a2port(arg)) == -1) {
1067: error("Invalid LocalPort '%s' on Match line",
1068: arg);
1069: return -1;
1070: }
1.319 dtucker 1071: if (ci == NULL) {
1.226 dtucker 1072: result = 0;
1073: continue;
1074: }
1.319 dtucker 1075: if (ci->lport == 0)
1076: match_test_missing_fatal("LocalPort", "lport");
1.226 dtucker 1077: /* TODO support port lists */
1078: if (port == ci->lport)
1079: debug("connection from %.100s matched "
1080: "'LocalPort %d' at line %d",
1081: ci->laddress, port, line);
1082: else
1083: result = 0;
1.317 djm 1084: } else if (strcasecmp(attrib, "rdomain") == 0) {
1085: if (ci == NULL || ci->rdomain == NULL) {
1086: result = 0;
1087: continue;
1088: }
1089: if (match_pattern_list(ci->rdomain, arg, 0) != 1)
1090: result = 0;
1091: else
1092: debug("user %.100s matched 'RDomain %.100s' at "
1093: "line %d", ci->rdomain, arg, line);
1.153 dtucker 1094: } else {
1095: error("Unsupported Match attribute %s", attrib);
1096: return -1;
1097: }
1.243 dtucker 1098: }
1099: if (attributes == 0) {
1100: error("One or more attributes required for Match");
1101: return -1;
1.153 dtucker 1102: }
1.226 dtucker 1103: if (ci != NULL)
1.153 dtucker 1104: debug3("match %sfound", result ? "" : "not ");
1105: *condition = cp;
1106: return result;
1107: }
1108:
1.158 dtucker 1109: #define WHITESPACE " \t\r\n"
1110:
1.220 djm 1111: /* Multistate option parsing */
1112: struct multistate {
1113: char *key;
1114: int value;
1115: };
1.320 djm 1116: static const struct multistate multistate_flag[] = {
1117: { "yes", 1 },
1118: { "no", 0 },
1119: { NULL, -1 }
1120: };
1.220 djm 1121: static const struct multistate multistate_addressfamily[] = {
1122: { "inet", AF_INET },
1123: { "inet6", AF_INET6 },
1124: { "any", AF_UNSPEC },
1125: { NULL, -1 }
1126: };
1127: static const struct multistate multistate_permitrootlogin[] = {
1128: { "without-password", PERMIT_NO_PASSWD },
1.280 deraadt 1129: { "prohibit-password", PERMIT_NO_PASSWD },
1.220 djm 1130: { "forced-commands-only", PERMIT_FORCED_ONLY },
1131: { "yes", PERMIT_YES },
1132: { "no", PERMIT_NO },
1133: { NULL, -1 }
1134: };
1135: static const struct multistate multistate_compression[] = {
1.337 sf 1136: { "yes", COMP_DELAYED },
1137: { "delayed", COMP_DELAYED },
1.220 djm 1138: { "no", COMP_NONE },
1139: { NULL, -1 }
1140: };
1141: static const struct multistate multistate_gatewayports[] = {
1142: { "clientspecified", 2 },
1143: { "yes", 1 },
1144: { "no", 0 },
1.222 djm 1145: { NULL, -1 }
1146: };
1.233 djm 1147: static const struct multistate multistate_tcpfwd[] = {
1148: { "yes", FORWARD_ALLOW },
1149: { "all", FORWARD_ALLOW },
1150: { "no", FORWARD_DENY },
1151: { "remote", FORWARD_REMOTE },
1152: { "local", FORWARD_LOCAL },
1153: { NULL, -1 }
1154: };
1.220 djm 1155:
1.94 markus 1156: int
1157: process_server_config_line(ServerOptions *options, char *line,
1.226 dtucker 1158: const char *filename, int linenum, int *activep,
1159: struct connection_info *connectinfo)
1.1 deraadt 1160: {
1.348 dtucker 1161: char ch, *cp, ***chararrayptr, **charptr, *arg, *arg2, *p;
1.237 dtucker 1162: int cmdline = 0, *intptr, value, value2, n, port;
1.174 dtucker 1163: SyslogFacility *log_facility_ptr;
1164: LogLevel *log_level_ptr;
1.25 markus 1165: ServerOpCodes opcode;
1.329 djm 1166: u_int i, *uintptr, uvalue, flags = 0;
1.151 djm 1167: size_t len;
1.237 dtucker 1168: long long val64;
1.220 djm 1169: const struct multistate *multistate_ptr;
1.322 dtucker 1170: const char *errstr;
1.303 djm 1171:
1172: /* Strip trailing whitespace. Allow \f (form feed) at EOL only */
1173: if ((len = strlen(line)) == 0)
1174: return 0;
1175: for (len--; len > 0; len--) {
1176: if (strchr(WHITESPACE "\f", line[len]) == NULL)
1177: break;
1178: line[len] = '\0';
1179: }
1.25 markus 1180:
1.94 markus 1181: cp = line;
1.148 dtucker 1182: if ((arg = strdelim(&cp)) == NULL)
1.147 djm 1183: return 0;
1.94 markus 1184: /* Ignore leading whitespace */
1185: if (*arg == '\0')
1186: arg = strdelim(&cp);
1187: if (!arg || !*arg || *arg == '#')
1188: return 0;
1189: intptr = NULL;
1190: charptr = NULL;
1.153 dtucker 1191: opcode = parse_token(arg, filename, linenum, &flags);
1192:
1193: if (activep == NULL) { /* We are processing a command line directive */
1194: cmdline = 1;
1195: activep = &cmdline;
1196: }
1197: if (*activep && opcode != sMatch)
1198: debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
1199: if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
1.226 dtucker 1200: if (connectinfo == NULL) {
1.153 dtucker 1201: fatal("%s line %d: Directive '%s' is not allowed "
1202: "within a Match block", filename, linenum, arg);
1203: } else { /* this is a directive we have already processed */
1204: while (arg)
1205: arg = strdelim(&cp);
1206: return 0;
1207: }
1208: }
1209:
1.94 markus 1210: switch (opcode) {
1211: case sBadOption:
1212: return -1;
1213: case sPort:
1214: /* ignore ports from configfile if cmdline specifies ports */
1215: if (options->ports_from_cmdline)
1216: return 0;
1217: if (options->num_ports >= MAX_PORTS)
1218: fatal("%s line %d: too many ports.",
1219: filename, linenum);
1.48 provos 1220: arg = strdelim(&cp);
1.94 markus 1221: if (!arg || *arg == '\0')
1222: fatal("%s line %d: missing port number.",
1223: filename, linenum);
1224: options->ports[options->num_ports++] = a2port(arg);
1.194 djm 1225: if (options->ports[options->num_ports-1] <= 0)
1.94 markus 1226: fatal("%s line %d: Badly formatted port number.",
1227: filename, linenum);
1228: break;
1.29 markus 1229:
1.94 markus 1230: case sLoginGraceTime:
1231: intptr = &options->login_grace_time;
1.180 djm 1232: parse_time:
1.94 markus 1233: arg = strdelim(&cp);
1234: if (!arg || *arg == '\0')
1235: fatal("%s line %d: missing time value.",
1236: filename, linenum);
1237: if ((value = convtime(arg)) == -1)
1238: fatal("%s line %d: invalid time value.",
1239: filename, linenum);
1.268 djm 1240: if (*activep && *intptr == -1)
1.94 markus 1241: *intptr = value;
1242: break;
1243:
1244: case sListenAddress:
1245: arg = strdelim(&cp);
1.139 djm 1246: if (arg == NULL || *arg == '\0')
1247: fatal("%s line %d: missing address",
1.94 markus 1248: filename, linenum);
1.144 dtucker 1249: /* check for bare IPv6 address: no "[]" and 2 or more ":" */
1250: if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
1251: && strchr(p+1, ':') != NULL) {
1.315 djm 1252: port = 0;
1253: p = arg;
1254: } else {
1.347 dtucker 1255: arg2 = NULL;
1.348 dtucker 1256: ch = '\0';
1.347 dtucker 1257: p = hpdelim2(&arg, &ch);
1258: if (p == NULL || ch == '/')
1.315 djm 1259: fatal("%s line %d: bad address:port usage",
1260: filename, linenum);
1261: p = cleanhostname(p);
1262: if (arg == NULL)
1263: port = 0;
1264: else if ((port = a2port(arg)) <= 0)
1265: fatal("%s line %d: bad port number",
1266: filename, linenum);
1267: }
1268: /* Optional routing table */
1269: arg2 = NULL;
1270: if ((arg = strdelim(&cp)) != NULL) {
1271: if (strcmp(arg, "rdomain") != 0 ||
1272: (arg2 = strdelim(&cp)) == NULL)
1273: fatal("%s line %d: bad ListenAddress syntax",
1274: filename, linenum);
1275: if (!valid_rdomain(arg2))
1276: fatal("%s line %d: bad routing domain",
1277: filename, linenum);
1.144 dtucker 1278: }
1.139 djm 1279:
1.315 djm 1280: queue_listen_addr(options, p, arg2, port);
1.25 markus 1281:
1.138 djm 1282: break;
1283:
1284: case sAddressFamily:
1.220 djm 1285: intptr = &options->address_family;
1286: multistate_ptr = multistate_addressfamily;
1287: parse_multistate:
1.138 djm 1288: arg = strdelim(&cp);
1.141 markus 1289: if (!arg || *arg == '\0')
1.220 djm 1290: fatal("%s line %d: missing argument.",
1.141 markus 1291: filename, linenum);
1.220 djm 1292: value = -1;
1293: for (i = 0; multistate_ptr[i].key != NULL; i++) {
1294: if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
1295: value = multistate_ptr[i].value;
1296: break;
1297: }
1298: }
1299: if (value == -1)
1300: fatal("%s line %d: unsupported option \"%s\".",
1.138 djm 1301: filename, linenum, arg);
1.220 djm 1302: if (*activep && *intptr == -1)
1.138 djm 1303: *intptr = value;
1.94 markus 1304: break;
1305:
1306: case sHostKeyFile:
1307: arg = strdelim(&cp);
1308: if (!arg || *arg == '\0')
1309: fatal("%s line %d: missing file name.",
1310: filename, linenum);
1.344 djm 1311: if (*activep) {
1312: servconf_add_hostkey(filename, linenum,
1313: options, arg, 1);
1314: }
1.94 markus 1315: break;
1.76 stevesk 1316:
1.240 markus 1317: case sHostKeyAgent:
1318: charptr = &options->host_key_agent;
1319: arg = strdelim(&cp);
1320: if (!arg || *arg == '\0')
1321: fatal("%s line %d: missing socket name.",
1322: filename, linenum);
1323: if (*activep && *charptr == NULL)
1324: *charptr = !strcmp(arg, SSH_AUTHSOCKET_ENV_NAME) ?
1325: xstrdup(arg) : derelativise_path(arg);
1326: break;
1327:
1.203 djm 1328: case sHostCertificate:
1.314 djm 1329: arg = strdelim(&cp);
1330: if (!arg || *arg == '\0')
1331: fatal("%s line %d: missing file name.",
1332: filename, linenum);
1333: if (*activep)
1334: servconf_add_hostcert(filename, linenum, options, arg);
1335: break;
1.203 djm 1336:
1.94 markus 1337: case sPidFile:
1338: charptr = &options->pid_file;
1.314 djm 1339: parse_filename:
1340: arg = strdelim(&cp);
1341: if (!arg || *arg == '\0')
1342: fatal("%s line %d: missing file name.",
1343: filename, linenum);
1344: if (*activep && *charptr == NULL) {
1345: *charptr = derelativise_path(arg);
1346: /* increase optional counter */
1347: if (intptr != NULL)
1348: *intptr = *intptr + 1;
1349: }
1350: break;
1.25 markus 1351:
1.94 markus 1352: case sPermitRootLogin:
1353: intptr = &options->permit_root_login;
1.220 djm 1354: multistate_ptr = multistate_permitrootlogin;
1355: goto parse_multistate;
1.36 markus 1356:
1.94 markus 1357: case sIgnoreRhosts:
1358: intptr = &options->ignore_rhosts;
1.180 djm 1359: parse_flag:
1.320 djm 1360: multistate_ptr = multistate_flag;
1361: goto parse_multistate;
1.94 markus 1362:
1363: case sIgnoreUserKnownHosts:
1364: intptr = &options->ignore_user_known_hosts;
1365: goto parse_flag;
1366:
1367: case sHostbasedAuthentication:
1368: intptr = &options->hostbased_authentication;
1369: goto parse_flag;
1370:
1371: case sHostbasedUsesNameFromPacketOnly:
1372: intptr = &options->hostbased_uses_name_from_packet_only;
1373: goto parse_flag;
1374:
1.258 djm 1375: case sHostbasedAcceptedKeyTypes:
1376: charptr = &options->hostbased_key_types;
1377: parse_keytypes:
1378: arg = strdelim(&cp);
1379: if (!arg || *arg == '\0')
1380: fatal("%s line %d: Missing argument.",
1381: filename, linenum);
1.304 djm 1382: if (*arg != '-' &&
1383: !sshkey_names_valid2(*arg == '+' ? arg + 1 : arg, 1))
1.258 djm 1384: fatal("%s line %d: Bad key types '%s'.",
1385: filename, linenum, arg ? arg : "<NONE>");
1386: if (*activep && *charptr == NULL)
1387: *charptr = xstrdup(arg);
1388: break;
1389:
1.276 markus 1390: case sHostKeyAlgorithms:
1391: charptr = &options->hostkeyalgorithms;
1392: goto parse_keytypes;
1393:
1.341 djm 1394: case sCASignatureAlgorithms:
1395: charptr = &options->ca_sign_algorithms;
1396: goto parse_keytypes;
1397:
1.94 markus 1398: case sPubkeyAuthentication:
1399: intptr = &options->pubkey_authentication;
1400: goto parse_flag;
1.119 jakob 1401:
1.258 djm 1402: case sPubkeyAcceptedKeyTypes:
1403: charptr = &options->pubkey_key_types;
1404: goto parse_keytypes;
1405:
1.94 markus 1406: case sKerberosAuthentication:
1407: intptr = &options->kerberos_authentication;
1408: goto parse_flag;
1409:
1410: case sKerberosOrLocalPasswd:
1411: intptr = &options->kerberos_or_local_passwd;
1412: goto parse_flag;
1413:
1414: case sKerberosTicketCleanup:
1415: intptr = &options->kerberos_ticket_cleanup;
1.130 jakob 1416: goto parse_flag;
1417:
1418: case sKerberosGetAFSToken:
1419: intptr = &options->kerberos_get_afs_token;
1.125 markus 1420: goto parse_flag;
1421:
1422: case sGssAuthentication:
1423: intptr = &options->gss_authentication;
1424: goto parse_flag;
1425:
1426: case sGssCleanupCreds:
1427: intptr = &options->gss_cleanup_creds;
1.271 djm 1428: goto parse_flag;
1429:
1430: case sGssStrictAcceptor:
1431: intptr = &options->gss_strict_acceptor;
1.94 markus 1432: goto parse_flag;
1433:
1434: case sPasswordAuthentication:
1435: intptr = &options->password_authentication;
1436: goto parse_flag;
1437:
1438: case sKbdInteractiveAuthentication:
1439: intptr = &options->kbd_interactive_authentication;
1440: goto parse_flag;
1441:
1442: case sChallengeResponseAuthentication:
1443: intptr = &options->challenge_response_authentication;
1444: goto parse_flag;
1445:
1446: case sPrintMotd:
1447: intptr = &options->print_motd;
1448: goto parse_flag;
1449:
1450: case sPrintLastLog:
1451: intptr = &options->print_lastlog;
1452: goto parse_flag;
1453:
1454: case sX11Forwarding:
1455: intptr = &options->x11_forwarding;
1456: goto parse_flag;
1457:
1458: case sX11DisplayOffset:
1459: intptr = &options->x11_display_offset;
1.293 naddy 1460: parse_int:
1461: arg = strdelim(&cp);
1.322 dtucker 1462: if ((errstr = atoi_err(arg, &value)) != NULL)
1463: fatal("%s line %d: integer value %s.",
1464: filename, linenum, errstr);
1.293 naddy 1465: if (*activep && *intptr == -1)
1466: *intptr = value;
1467: break;
1.99 stevesk 1468:
1469: case sX11UseLocalhost:
1470: intptr = &options->x11_use_localhost;
1471: goto parse_flag;
1.94 markus 1472:
1473: case sXAuthLocation:
1474: charptr = &options->xauth_location;
1475: goto parse_filename;
1476:
1.244 djm 1477: case sPermitTTY:
1478: intptr = &options->permit_tty;
1479: goto parse_flag;
1480:
1.250 djm 1481: case sPermitUserRC:
1482: intptr = &options->permit_user_rc;
1483: goto parse_flag;
1484:
1.94 markus 1485: case sStrictModes:
1486: intptr = &options->strict_modes;
1487: goto parse_flag;
1488:
1.129 markus 1489: case sTCPKeepAlive:
1490: intptr = &options->tcp_keep_alive;
1.94 markus 1491: goto parse_flag;
1492:
1493: case sEmptyPasswd:
1494: intptr = &options->permit_empty_passwd;
1.113 markus 1495: goto parse_flag;
1496:
1497: case sPermitUserEnvironment:
1498: intptr = &options->permit_user_env;
1.334 djm 1499: charptr = &options->permit_user_env_whitelist;
1500: arg = strdelim(&cp);
1501: if (!arg || *arg == '\0')
1502: fatal("%s line %d: missing argument.",
1503: filename, linenum);
1504: value = 0;
1505: p = NULL;
1506: if (strcmp(arg, "yes") == 0)
1507: value = 1;
1508: else if (strcmp(arg, "no") == 0)
1509: value = 0;
1510: else {
1511: /* Pattern-list specified */
1512: value = 1;
1513: p = xstrdup(arg);
1514: }
1515: if (*activep && *intptr == -1) {
1516: *intptr = value;
1517: *charptr = p;
1518: p = NULL;
1519: }
1520: free(p);
1521: break;
1.94 markus 1522:
1.111 markus 1523: case sCompression:
1524: intptr = &options->compression;
1.220 djm 1525: multistate_ptr = multistate_compression;
1526: goto parse_multistate;
1.94 markus 1527:
1.235 dtucker 1528: case sRekeyLimit:
1529: arg = strdelim(&cp);
1530: if (!arg || *arg == '\0')
1531: fatal("%.200s line %d: Missing argument.", filename,
1532: linenum);
1533: if (strcmp(arg, "default") == 0) {
1534: val64 = 0;
1535: } else {
1.236 dtucker 1536: if (scan_scaled(arg, &val64) == -1)
1537: fatal("%.200s line %d: Bad number '%s': %s",
1538: filename, linenum, arg, strerror(errno));
1.235 dtucker 1539: if (val64 != 0 && val64 < 16)
1540: fatal("%.200s line %d: RekeyLimit too small",
1541: filename, linenum);
1542: }
1543: if (*activep && options->rekey_limit == -1)
1.284 dtucker 1544: options->rekey_limit = val64;
1.235 dtucker 1545: if (cp != NULL) { /* optional rekey interval present */
1546: if (strcmp(cp, "none") == 0) {
1547: (void)strdelim(&cp); /* discard */
1548: break;
1549: }
1550: intptr = &options->rekey_interval;
1551: goto parse_time;
1552: }
1553: break;
1554:
1.94 markus 1555: case sGatewayPorts:
1.251 millert 1556: intptr = &options->fwd_opts.gateway_ports;
1.220 djm 1557: multistate_ptr = multistate_gatewayports;
1558: goto parse_multistate;
1.25 markus 1559:
1.122 markus 1560: case sUseDNS:
1561: intptr = &options->use_dns;
1.94 markus 1562: goto parse_flag;
1.53 markus 1563:
1.94 markus 1564: case sLogFacility:
1.174 dtucker 1565: log_facility_ptr = &options->log_facility;
1.94 markus 1566: arg = strdelim(&cp);
1567: value = log_facility_number(arg);
1.101 markus 1568: if (value == SYSLOG_FACILITY_NOT_SET)
1.94 markus 1569: fatal("%.200s line %d: unsupported log facility '%s'",
1570: filename, linenum, arg ? arg : "<NONE>");
1.174 dtucker 1571: if (*log_facility_ptr == -1)
1572: *log_facility_ptr = (SyslogFacility) value;
1.94 markus 1573: break;
1.25 markus 1574:
1.94 markus 1575: case sLogLevel:
1.174 dtucker 1576: log_level_ptr = &options->log_level;
1.94 markus 1577: arg = strdelim(&cp);
1578: value = log_level_number(arg);
1.101 markus 1579: if (value == SYSLOG_LEVEL_NOT_SET)
1.94 markus 1580: fatal("%.200s line %d: unsupported log level '%s'",
1581: filename, linenum, arg ? arg : "<NONE>");
1.308 djm 1582: if (*activep && *log_level_ptr == -1)
1.174 dtucker 1583: *log_level_ptr = (LogLevel) value;
1.94 markus 1584: break;
1585:
1586: case sAllowTcpForwarding:
1587: intptr = &options->allow_tcp_forwarding;
1.233 djm 1588: multistate_ptr = multistate_tcpfwd;
1589: goto parse_multistate;
1.102 provos 1590:
1.251 millert 1591: case sAllowStreamLocalForwarding:
1592: intptr = &options->allow_streamlocal_forwarding;
1593: multistate_ptr = multistate_tcpfwd;
1594: goto parse_multistate;
1595:
1.178 pyr 1596: case sAllowAgentForwarding:
1597: intptr = &options->allow_agent_forwarding;
1598: goto parse_flag;
1599:
1.301 djm 1600: case sDisableForwarding:
1601: intptr = &options->disable_forwarding;
1602: goto parse_flag;
1603:
1.94 markus 1604: case sAllowUsers:
1605: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.299 djm 1606: if (match_user(NULL, NULL, NULL, arg) == -1)
1607: fatal("%s line %d: invalid AllowUsers pattern: "
1608: "\"%.100s\"", filename, linenum, arg);
1.227 markus 1609: if (!*activep)
1610: continue;
1.314 djm 1611: array_append(filename, linenum, "AllowUsers",
1612: &options->allow_users, &options->num_allow_users,
1613: arg);
1.94 markus 1614: }
1615: break;
1.25 markus 1616:
1.94 markus 1617: case sDenyUsers:
1618: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.299 djm 1619: if (match_user(NULL, NULL, NULL, arg) == -1)
1620: fatal("%s line %d: invalid DenyUsers pattern: "
1621: "\"%.100s\"", filename, linenum, arg);
1.227 markus 1622: if (!*activep)
1623: continue;
1.314 djm 1624: array_append(filename, linenum, "DenyUsers",
1625: &options->deny_users, &options->num_deny_users,
1626: arg);
1.94 markus 1627: }
1628: break;
1.25 markus 1629:
1.94 markus 1630: case sAllowGroups:
1631: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.227 markus 1632: if (!*activep)
1633: continue;
1.314 djm 1634: array_append(filename, linenum, "AllowGroups",
1635: &options->allow_groups, &options->num_allow_groups,
1636: arg);
1.94 markus 1637: }
1638: break;
1.33 markus 1639:
1.94 markus 1640: case sDenyGroups:
1641: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.227 markus 1642: if (!*activep)
1643: continue;
1.314 djm 1644: array_append(filename, linenum, "DenyGroups",
1645: &options->deny_groups, &options->num_deny_groups,
1646: arg);
1.94 markus 1647: }
1648: break;
1.66 markus 1649:
1.94 markus 1650: case sCiphers:
1651: arg = strdelim(&cp);
1652: if (!arg || *arg == '\0')
1653: fatal("%s line %d: Missing argument.", filename, linenum);
1.304 djm 1654: if (*arg != '-' && !ciphers_valid(*arg == '+' ? arg + 1 : arg))
1.94 markus 1655: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1656: filename, linenum, arg ? arg : "<NONE>");
1657: if (options->ciphers == NULL)
1658: options->ciphers = xstrdup(arg);
1659: break;
1.33 markus 1660:
1.94 markus 1661: case sMacs:
1662: arg = strdelim(&cp);
1663: if (!arg || *arg == '\0')
1664: fatal("%s line %d: Missing argument.", filename, linenum);
1.304 djm 1665: if (*arg != '-' && !mac_valid(*arg == '+' ? arg + 1 : arg))
1.94 markus 1666: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
1667: filename, linenum, arg ? arg : "<NONE>");
1668: if (options->macs == NULL)
1669: options->macs = xstrdup(arg);
1.211 djm 1670: break;
1671:
1672: case sKexAlgorithms:
1673: arg = strdelim(&cp);
1674: if (!arg || *arg == '\0')
1675: fatal("%s line %d: Missing argument.",
1676: filename, linenum);
1.304 djm 1677: if (*arg != '-' &&
1678: !kex_names_valid(*arg == '+' ? arg + 1 : arg))
1.211 djm 1679: fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
1680: filename, linenum, arg ? arg : "<NONE>");
1681: if (options->kex_algorithms == NULL)
1682: options->kex_algorithms = xstrdup(arg);
1.94 markus 1683: break;
1.43 jakob 1684:
1.94 markus 1685: case sSubsystem:
1686: if (options->num_subsystems >= MAX_SUBSYSTEMS) {
1687: fatal("%s line %d: too many subsystems defined.",
1.95 deraadt 1688: filename, linenum);
1.94 markus 1689: }
1690: arg = strdelim(&cp);
1691: if (!arg || *arg == '\0')
1692: fatal("%s line %d: Missing subsystem name.",
1.95 deraadt 1693: filename, linenum);
1.153 dtucker 1694: if (!*activep) {
1695: arg = strdelim(&cp);
1696: break;
1697: }
1.94 markus 1698: for (i = 0; i < options->num_subsystems; i++)
1699: if (strcmp(arg, options->subsystem_name[i]) == 0)
1700: fatal("%s line %d: Subsystem '%s' already defined.",
1.95 deraadt 1701: filename, linenum, arg);
1.94 markus 1702: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1703: arg = strdelim(&cp);
1704: if (!arg || *arg == '\0')
1705: fatal("%s line %d: Missing subsystem command.",
1.95 deraadt 1706: filename, linenum);
1.94 markus 1707: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.151 djm 1708:
1709: /* Collect arguments (separate to executable) */
1710: p = xstrdup(arg);
1711: len = strlen(p) + 1;
1712: while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1713: len += 1 + strlen(arg);
1.264 deraadt 1714: p = xreallocarray(p, 1, len);
1.151 djm 1715: strlcat(p, " ", len);
1716: strlcat(p, arg, len);
1717: }
1718: options->subsystem_args[options->num_subsystems] = p;
1.94 markus 1719: options->num_subsystems++;
1720: break;
1.46 markus 1721:
1.94 markus 1722: case sMaxStartups:
1723: arg = strdelim(&cp);
1724: if (!arg || *arg == '\0')
1725: fatal("%s line %d: Missing MaxStartups spec.",
1.95 deraadt 1726: filename, linenum);
1.94 markus 1727: if ((n = sscanf(arg, "%d:%d:%d",
1728: &options->max_startups_begin,
1729: &options->max_startups_rate,
1730: &options->max_startups)) == 3) {
1731: if (options->max_startups_begin >
1732: options->max_startups ||
1733: options->max_startups_rate > 100 ||
1734: options->max_startups_rate < 1)
1.50 markus 1735: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 1736: filename, linenum);
1.94 markus 1737: } else if (n != 1)
1738: fatal("%s line %d: Illegal MaxStartups spec.",
1739: filename, linenum);
1740: else
1741: options->max_startups = options->max_startups_begin;
1742: break;
1.133 dtucker 1743:
1744: case sMaxAuthTries:
1745: intptr = &options->max_authtries;
1746: goto parse_int;
1.94 markus 1747:
1.180 djm 1748: case sMaxSessions:
1749: intptr = &options->max_sessions;
1750: goto parse_int;
1751:
1.94 markus 1752: case sBanner:
1753: charptr = &options->banner;
1754: goto parse_filename;
1.176 djm 1755:
1.94 markus 1756: /*
1757: * These options can contain %X options expanded at
1758: * connect time, so that you can specify paths like:
1759: *
1760: * AuthorizedKeysFile /etc/ssh_keys/%u
1761: */
1762: case sAuthorizedKeysFile:
1.219 djm 1763: if (*activep && options->num_authkeys_files == 0) {
1764: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.314 djm 1765: arg = tilde_expand_filename(arg, getuid());
1766: array_append(filename, linenum,
1767: "AuthorizedKeysFile",
1768: &options->authorized_keys_files,
1769: &options->num_authkeys_files, arg);
1770: free(arg);
1.219 djm 1771: }
1772: }
1773: return 0;
1774:
1.208 djm 1775: case sAuthorizedPrincipalsFile:
1776: charptr = &options->authorized_principals_file;
1.205 djm 1777: arg = strdelim(&cp);
1778: if (!arg || *arg == '\0')
1779: fatal("%s line %d: missing file name.",
1780: filename, linenum);
1781: if (*activep && *charptr == NULL) {
1.206 markus 1782: *charptr = tilde_expand_filename(arg, getuid());
1.205 djm 1783: /* increase optional counter */
1784: if (intptr != NULL)
1785: *intptr = *intptr + 1;
1786: }
1787: break;
1.94 markus 1788:
1789: case sClientAliveInterval:
1790: intptr = &options->client_alive_interval;
1791: goto parse_time;
1792:
1793: case sClientAliveCountMax:
1794: intptr = &options->client_alive_count_max;
1795: goto parse_int;
1.131 djm 1796:
1797: case sAcceptEnv:
1798: while ((arg = strdelim(&cp)) && *arg != '\0') {
1799: if (strchr(arg, '=') != NULL)
1800: fatal("%s line %d: Invalid environment name.",
1801: filename, linenum);
1.153 dtucker 1802: if (!*activep)
1.227 markus 1803: continue;
1.314 djm 1804: array_append(filename, linenum, "AcceptEnv",
1805: &options->accept_env, &options->num_accept_env,
1806: arg);
1.131 djm 1807: }
1808: break;
1.145 reyk 1809:
1.332 djm 1810: case sSetEnv:
1811: uvalue = options->num_setenv;
1812: while ((arg = strdelimw(&cp)) && *arg != '\0') {
1813: if (strchr(arg, '=') == NULL)
1814: fatal("%s line %d: Invalid environment.",
1815: filename, linenum);
1816: if (!*activep || uvalue != 0)
1817: continue;
1818: array_append(filename, linenum, "SetEnv",
1819: &options->setenv, &options->num_setenv, arg);
1820: }
1821: break;
1822:
1.145 reyk 1823: case sPermitTunnel:
1824: intptr = &options->permit_tun;
1.146 reyk 1825: arg = strdelim(&cp);
1826: if (!arg || *arg == '\0')
1827: fatal("%s line %d: Missing yes/point-to-point/"
1828: "ethernet/no argument.", filename, linenum);
1.182 dtucker 1829: value = -1;
1830: for (i = 0; tunmode_desc[i].val != -1; i++)
1831: if (strcmp(tunmode_desc[i].text, arg) == 0) {
1832: value = tunmode_desc[i].val;
1833: break;
1834: }
1835: if (value == -1)
1.146 reyk 1836: fatal("%s line %d: Bad yes/point-to-point/ethernet/"
1837: "no argument: %s", filename, linenum, arg);
1.268 djm 1838: if (*activep && *intptr == -1)
1.146 reyk 1839: *intptr = value;
1840: break;
1.94 markus 1841:
1.153 dtucker 1842: case sMatch:
1843: if (cmdline)
1844: fatal("Match directive not supported as a command-line "
1845: "option");
1.226 dtucker 1846: value = match_cfg_line(&cp, linenum, connectinfo);
1.153 dtucker 1847: if (value < 0)
1848: fatal("%s line %d: Bad Match condition", filename,
1849: linenum);
1850: *activep = value;
1.156 dtucker 1851: break;
1852:
1.330 djm 1853: case sPermitListen:
1.156 dtucker 1854: case sPermitOpen:
1.330 djm 1855: if (opcode == sPermitListen) {
1856: uintptr = &options->num_permitted_listens;
1857: chararrayptr = &options->permitted_listens;
1.329 djm 1858: } else {
1859: uintptr = &options->num_permitted_opens;
1860: chararrayptr = &options->permitted_opens;
1861: }
1.156 dtucker 1862: arg = strdelim(&cp);
1863: if (!arg || *arg == '\0')
1.329 djm 1864: fatal("%s line %d: missing %s specification",
1865: filename, linenum, lookup_opcode_name(opcode));
1866: uvalue = *uintptr; /* modified later */
1.310 djm 1867: if (strcmp(arg, "any") == 0 || strcmp(arg, "none") == 0) {
1.329 djm 1868: if (*activep && uvalue == 0) {
1869: *uintptr = 1;
1870: *chararrayptr = xcalloc(1,
1871: sizeof(**chararrayptr));
1872: (*chararrayptr)[0] = xstrdup(arg);
1.311 dtucker 1873: }
1.156 dtucker 1874: break;
1875: }
1.159 dtucker 1876: for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
1.333 djm 1877: if (opcode == sPermitListen &&
1878: strchr(arg, ':') == NULL) {
1879: /*
1880: * Allow bare port number for PermitListen
1881: * to indicate a wildcard listen host.
1882: */
1883: xasprintf(&arg2, "*:%s", arg);
1884: } else {
1885: arg2 = xstrdup(arg);
1.348 dtucker 1886: ch = '\0';
1.347 dtucker 1887: p = hpdelim2(&arg, &ch);
1888: if (p == NULL || ch == '/') {
1.333 djm 1889: fatal("%s line %d: missing host in %s",
1890: filename, linenum,
1891: lookup_opcode_name(opcode));
1892: }
1893: p = cleanhostname(p);
1.329 djm 1894: }
1895: if (arg == NULL ||
1896: ((port = permitopen_port(arg)) < 0)) {
1897: fatal("%s line %d: bad port number in %s",
1898: filename, linenum,
1899: lookup_opcode_name(opcode));
1900: }
1901: if (*activep && uvalue == 0) {
1.314 djm 1902: array_append(filename, linenum,
1.329 djm 1903: lookup_opcode_name(opcode),
1904: chararrayptr, uintptr, arg2);
1.314 djm 1905: }
1906: free(arg2);
1.159 dtucker 1907: }
1.153 dtucker 1908: break;
1909:
1.158 dtucker 1910: case sForceCommand:
1.262 dtucker 1911: if (cp == NULL || *cp == '\0')
1.158 dtucker 1912: fatal("%.200s line %d: Missing argument.", filename,
1913: linenum);
1914: len = strspn(cp, WHITESPACE);
1915: if (*activep && options->adm_forced_command == NULL)
1916: options->adm_forced_command = xstrdup(cp + len);
1917: return 0;
1918:
1.176 djm 1919: case sChrootDirectory:
1920: charptr = &options->chroot_directory;
1.177 djm 1921:
1922: arg = strdelim(&cp);
1923: if (!arg || *arg == '\0')
1924: fatal("%s line %d: missing file name.",
1925: filename, linenum);
1926: if (*activep && *charptr == NULL)
1927: *charptr = xstrdup(arg);
1928: break;
1.176 djm 1929:
1.204 djm 1930: case sTrustedUserCAKeys:
1931: charptr = &options->trusted_user_ca_keys;
1932: goto parse_filename;
1933:
1934: case sRevokedKeys:
1935: charptr = &options->revoked_keys_file;
1936: goto parse_filename;
1937:
1.213 djm 1938: case sIPQoS:
1939: arg = strdelim(&cp);
1940: if ((value = parse_ipqos(arg)) == -1)
1941: fatal("%s line %d: Bad IPQoS value: %s",
1942: filename, linenum, arg);
1943: arg = strdelim(&cp);
1944: if (arg == NULL)
1945: value2 = value;
1946: else if ((value2 = parse_ipqos(arg)) == -1)
1947: fatal("%s line %d: Bad IPQoS value: %s",
1948: filename, linenum, arg);
1949: if (*activep) {
1950: options->ip_qos_interactive = value;
1951: options->ip_qos_bulk = value2;
1952: }
1953: break;
1954:
1.225 djm 1955: case sVersionAddendum:
1.262 dtucker 1956: if (cp == NULL || *cp == '\0')
1.225 djm 1957: fatal("%.200s line %d: Missing argument.", filename,
1958: linenum);
1959: len = strspn(cp, WHITESPACE);
1960: if (*activep && options->version_addendum == NULL) {
1961: if (strcasecmp(cp + len, "none") == 0)
1962: options->version_addendum = xstrdup("");
1963: else if (strchr(cp + len, '\r') != NULL)
1964: fatal("%.200s line %d: Invalid argument",
1965: filename, linenum);
1966: else
1967: options->version_addendum = xstrdup(cp + len);
1968: }
1969: return 0;
1970:
1.231 djm 1971: case sAuthorizedKeysCommand:
1.255 jsg 1972: if (cp == NULL)
1973: fatal("%.200s line %d: Missing argument.", filename,
1974: linenum);
1.231 djm 1975: len = strspn(cp, WHITESPACE);
1976: if (*activep && options->authorized_keys_command == NULL) {
1977: if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
1978: fatal("%.200s line %d: AuthorizedKeysCommand "
1979: "must be an absolute path",
1980: filename, linenum);
1981: options->authorized_keys_command = xstrdup(cp + len);
1982: }
1983: return 0;
1984:
1985: case sAuthorizedKeysCommandUser:
1986: charptr = &options->authorized_keys_command_user;
1987:
1988: arg = strdelim(&cp);
1.255 jsg 1989: if (!arg || *arg == '\0')
1990: fatal("%s line %d: missing AuthorizedKeysCommandUser "
1991: "argument.", filename, linenum);
1.231 djm 1992: if (*activep && *charptr == NULL)
1993: *charptr = xstrdup(arg);
1994: break;
1995:
1.270 djm 1996: case sAuthorizedPrincipalsCommand:
1997: if (cp == NULL)
1998: fatal("%.200s line %d: Missing argument.", filename,
1999: linenum);
2000: len = strspn(cp, WHITESPACE);
2001: if (*activep &&
2002: options->authorized_principals_command == NULL) {
2003: if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
2004: fatal("%.200s line %d: "
2005: "AuthorizedPrincipalsCommand must be "
2006: "an absolute path", filename, linenum);
2007: options->authorized_principals_command =
2008: xstrdup(cp + len);
2009: }
2010: return 0;
2011:
2012: case sAuthorizedPrincipalsCommandUser:
2013: charptr = &options->authorized_principals_command_user;
2014:
2015: arg = strdelim(&cp);
2016: if (!arg || *arg == '\0')
2017: fatal("%s line %d: missing "
2018: "AuthorizedPrincipalsCommandUser argument.",
2019: filename, linenum);
2020: if (*activep && *charptr == NULL)
2021: *charptr = xstrdup(arg);
2022: break;
2023:
1.232 djm 2024: case sAuthenticationMethods:
1.268 djm 2025: if (options->num_auth_methods == 0) {
1.291 djm 2026: value = 0; /* seen "any" pseudo-method */
1.328 djm 2027: value2 = 0; /* successfully parsed any method */
1.232 djm 2028: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.291 djm 2029: if (strcmp(arg, "any") == 0) {
2030: if (options->num_auth_methods > 0) {
2031: fatal("%s line %d: \"any\" "
2032: "must appear alone in "
2033: "AuthenticationMethods",
2034: filename, linenum);
2035: }
2036: value = 1;
2037: } else if (value) {
2038: fatal("%s line %d: \"any\" must appear "
2039: "alone in AuthenticationMethods",
2040: filename, linenum);
2041: } else if (auth2_methods_valid(arg, 0) != 0) {
1.232 djm 2042: fatal("%s line %d: invalid "
2043: "authentication method list.",
2044: filename, linenum);
1.291 djm 2045: }
1.292 djm 2046: value2 = 1;
1.268 djm 2047: if (!*activep)
2048: continue;
1.314 djm 2049: array_append(filename, linenum,
2050: "AuthenticationMethods",
2051: &options->auth_methods,
2052: &options->num_auth_methods, arg);
1.232 djm 2053: }
1.292 djm 2054: if (value2 == 0) {
1.291 djm 2055: fatal("%s line %d: no AuthenticationMethods "
2056: "specified", filename, linenum);
2057: }
1.232 djm 2058: }
2059: return 0;
2060:
1.251 millert 2061: case sStreamLocalBindMask:
2062: arg = strdelim(&cp);
2063: if (!arg || *arg == '\0')
1.268 djm 2064: fatal("%s line %d: missing StreamLocalBindMask "
2065: "argument.", filename, linenum);
1.251 millert 2066: /* Parse mode in octal format */
2067: value = strtol(arg, &p, 8);
2068: if (arg == p || value < 0 || value > 0777)
2069: fatal("%s line %d: Bad mask.", filename, linenum);
1.268 djm 2070: if (*activep)
2071: options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
1.251 millert 2072: break;
2073:
2074: case sStreamLocalBindUnlink:
2075: intptr = &options->fwd_opts.streamlocal_bind_unlink;
2076: goto parse_flag;
2077:
1.256 djm 2078: case sFingerprintHash:
2079: arg = strdelim(&cp);
2080: if (!arg || *arg == '\0')
2081: fatal("%.200s line %d: Missing argument.",
2082: filename, linenum);
2083: if ((value = ssh_digest_alg_by_name(arg)) == -1)
2084: fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
2085: filename, linenum, arg);
2086: if (*activep)
2087: options->fingerprint_hash = value;
2088: break;
2089:
1.309 djm 2090: case sExposeAuthInfo:
2091: intptr = &options->expose_userauth_info;
2092: goto parse_flag;
2093:
1.316 djm 2094: case sRDomain:
2095: charptr = &options->routing_domain;
2096: arg = strdelim(&cp);
2097: if (!arg || *arg == '\0')
2098: fatal("%.200s line %d: Missing argument.",
2099: filename, linenum);
2100: if (strcasecmp(arg, "none") != 0 && strcmp(arg, "%D") != 0 &&
2101: !valid_rdomain(arg))
2102: fatal("%s line %d: bad routing domain",
2103: filename, linenum);
2104: if (*activep && *charptr == NULL)
2105: *charptr = xstrdup(arg);
1.321 dtucker 2106: break;
1.316 djm 2107:
1.94 markus 2108: case sDeprecated:
1.295 djm 2109: case sIgnore:
1.121 jakob 2110: case sUnsupported:
1.295 djm 2111: do_log2(opcode == sIgnore ?
2112: SYSLOG_LEVEL_DEBUG2 : SYSLOG_LEVEL_INFO,
2113: "%s line %d: %s option %s", filename, linenum,
2114: opcode == sUnsupported ? "Unsupported" : "Deprecated", arg);
1.94 markus 2115: while (arg)
2116: arg = strdelim(&cp);
2117: break;
2118:
2119: default:
2120: fatal("%s line %d: Missing handler for opcode %s (%d)",
2121: filename, linenum, arg, opcode);
2122: }
2123: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
2124: fatal("%s line %d: garbage at end of line; \"%.200s\".",
2125: filename, linenum, arg);
2126: return 0;
2127: }
2128:
2129: /* Reads the server configuration file. */
1.25 markus 2130:
1.94 markus 2131: void
1.338 markus 2132: load_server_config(const char *filename, struct sshbuf *conf)
1.94 markus 2133: {
1.331 markus 2134: char *line = NULL, *cp;
2135: size_t linesize = 0;
1.94 markus 2136: FILE *f;
1.338 markus 2137: int r, lineno = 0;
1.81 stevesk 2138:
1.134 djm 2139: debug2("%s: filename %s", __func__, filename);
2140: if ((f = fopen(filename, "r")) == NULL) {
1.94 markus 2141: perror(filename);
2142: exit(1);
2143: }
1.338 markus 2144: sshbuf_reset(conf);
1.331 markus 2145: while (getline(&line, &linesize, f) != -1) {
1.229 dtucker 2146: lineno++;
1.134 djm 2147: /*
2148: * Trim out comments and strip whitespace
1.135 deraadt 2149: * NB - preserve newlines, they are needed to reproduce
1.134 djm 2150: * line numbers later for error messages
2151: */
2152: if ((cp = strchr(line, '#')) != NULL)
2153: memcpy(cp, "\n", 2);
2154: cp = line + strspn(line, " \t\r");
1.338 markus 2155: if ((r = sshbuf_put(conf, cp, strlen(cp))) != 0)
2156: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.134 djm 2157: }
1.331 markus 2158: free(line);
1.338 markus 2159: if ((r = sshbuf_put_u8(conf, 0)) != 0)
2160: fatal("%s: buffer error: %s", __func__, ssh_err(r));
1.134 djm 2161: fclose(f);
1.338 markus 2162: debug2("%s: done config len = %zu", __func__, sshbuf_len(conf));
1.134 djm 2163: }
2164:
2165: void
1.226 dtucker 2166: parse_server_match_config(ServerOptions *options,
2167: struct connection_info *connectinfo)
1.153 dtucker 2168: {
2169: ServerOptions mo;
2170:
2171: initialize_server_options(&mo);
1.338 markus 2172: parse_server_config(&mo, "reprocess config", cfg, connectinfo);
1.168 dtucker 2173: copy_set_server_options(options, &mo, 0);
1.153 dtucker 2174: }
2175:
1.226 dtucker 2176: int parse_server_match_testspec(struct connection_info *ci, char *spec)
2177: {
2178: char *p;
2179:
2180: while ((p = strsep(&spec, ",")) && *p != '\0') {
2181: if (strncmp(p, "addr=", 5) == 0) {
2182: ci->address = xstrdup(p + 5);
2183: } else if (strncmp(p, "host=", 5) == 0) {
2184: ci->host = xstrdup(p + 5);
2185: } else if (strncmp(p, "user=", 5) == 0) {
2186: ci->user = xstrdup(p + 5);
2187: } else if (strncmp(p, "laddr=", 6) == 0) {
2188: ci->laddress = xstrdup(p + 6);
1.317 djm 2189: } else if (strncmp(p, "rdomain=", 8) == 0) {
2190: ci->rdomain = xstrdup(p + 8);
1.226 dtucker 2191: } else if (strncmp(p, "lport=", 6) == 0) {
2192: ci->lport = a2port(p + 6);
2193: if (ci->lport == -1) {
2194: fprintf(stderr, "Invalid port '%s' in test mode"
2195: " specification %s\n", p+6, p);
2196: return -1;
2197: }
2198: } else {
2199: fprintf(stderr, "Invalid test mode specification %s\n",
2200: p);
2201: return -1;
2202: }
2203: }
2204: return 0;
2205: }
2206:
1.168 dtucker 2207: /*
2208: * Copy any supported values that are set.
2209: *
1.195 jj 2210: * If the preauth flag is set, we do not bother copying the string or
1.168 dtucker 2211: * array values that are not used pre-authentication, because any that we
1.328 djm 2212: * do use must be explicitly sent in mm_getpwnamallow().
1.168 dtucker 2213: */
1.153 dtucker 2214: void
1.168 dtucker 2215: copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
1.153 dtucker 2216: {
1.247 djm 2217: #define M_CP_INTOPT(n) do {\
2218: if (src->n != -1) \
2219: dst->n = src->n; \
2220: } while (0)
2221:
1.168 dtucker 2222: M_CP_INTOPT(password_authentication);
2223: M_CP_INTOPT(gss_authentication);
2224: M_CP_INTOPT(pubkey_authentication);
2225: M_CP_INTOPT(kerberos_authentication);
2226: M_CP_INTOPT(hostbased_authentication);
1.209 djm 2227: M_CP_INTOPT(hostbased_uses_name_from_packet_only);
1.168 dtucker 2228: M_CP_INTOPT(kbd_interactive_authentication);
1.175 dtucker 2229: M_CP_INTOPT(permit_root_login);
1.188 djm 2230: M_CP_INTOPT(permit_empty_passwd);
1.168 dtucker 2231:
2232: M_CP_INTOPT(allow_tcp_forwarding);
1.251 millert 2233: M_CP_INTOPT(allow_streamlocal_forwarding);
1.178 pyr 2234: M_CP_INTOPT(allow_agent_forwarding);
1.301 djm 2235: M_CP_INTOPT(disable_forwarding);
1.309 djm 2236: M_CP_INTOPT(expose_userauth_info);
1.209 djm 2237: M_CP_INTOPT(permit_tun);
1.251 millert 2238: M_CP_INTOPT(fwd_opts.gateway_ports);
1.289 djm 2239: M_CP_INTOPT(fwd_opts.streamlocal_bind_unlink);
1.168 dtucker 2240: M_CP_INTOPT(x11_display_offset);
2241: M_CP_INTOPT(x11_forwarding);
2242: M_CP_INTOPT(x11_use_localhost);
1.244 djm 2243: M_CP_INTOPT(permit_tty);
1.250 djm 2244: M_CP_INTOPT(permit_user_rc);
1.180 djm 2245: M_CP_INTOPT(max_sessions);
1.184 dtucker 2246: M_CP_INTOPT(max_authtries);
1.300 markus 2247: M_CP_INTOPT(client_alive_count_max);
2248: M_CP_INTOPT(client_alive_interval);
1.213 djm 2249: M_CP_INTOPT(ip_qos_interactive);
2250: M_CP_INTOPT(ip_qos_bulk);
1.235 dtucker 2251: M_CP_INTOPT(rekey_limit);
2252: M_CP_INTOPT(rekey_interval);
1.308 djm 2253: M_CP_INTOPT(log_level);
1.289 djm 2254:
2255: /*
2256: * The bind_mask is a mode_t that may be unsigned, so we can't use
2257: * M_CP_INTOPT - it does a signed comparison that causes compiler
2258: * warnings.
2259: */
1.290 dtucker 2260: if (src->fwd_opts.streamlocal_bind_mask != (mode_t)-1) {
1.289 djm 2261: dst->fwd_opts.streamlocal_bind_mask =
2262: src->fwd_opts.streamlocal_bind_mask;
2263: }
1.247 djm 2264:
2265: /* M_CP_STROPT and M_CP_STRARRAYOPT should not appear before here */
2266: #define M_CP_STROPT(n) do {\
2267: if (src->n != NULL && dst->n != src->n) { \
2268: free(dst->n); \
2269: dst->n = src->n; \
2270: } \
2271: } while(0)
1.314 djm 2272: #define M_CP_STRARRAYOPT(s, num_s) do {\
2273: u_int i; \
2274: if (src->num_s != 0) { \
2275: for (i = 0; i < dst->num_s; i++) \
2276: free(dst->s[i]); \
2277: free(dst->s); \
2278: dst->s = xcalloc(src->num_s, sizeof(*dst->s)); \
2279: for (i = 0; i < src->num_s; i++) \
2280: dst->s[i] = xstrdup(src->s[i]); \
2281: dst->num_s = src->num_s; \
1.312 djm 2282: } \
2283: } while(0)
1.168 dtucker 2284:
1.218 djm 2285: /* See comment in servconf.h */
2286: COPY_MATCH_STRING_OPTS();
1.282 djm 2287:
2288: /* Arguments that accept '+...' need to be expanded */
2289: assemble_algorithms(dst);
1.216 djm 2290:
1.217 dtucker 2291: /*
2292: * The only things that should be below this point are string options
2293: * which are only used after authentication.
2294: */
1.168 dtucker 2295: if (preauth)
2296: return;
1.219 djm 2297:
1.283 djm 2298: /* These options may be "none" to clear a global setting */
1.168 dtucker 2299: M_CP_STROPT(adm_forced_command);
1.283 djm 2300: if (option_clear_or_none(dst->adm_forced_command)) {
2301: free(dst->adm_forced_command);
2302: dst->adm_forced_command = NULL;
2303: }
1.176 djm 2304: M_CP_STROPT(chroot_directory);
1.283 djm 2305: if (option_clear_or_none(dst->chroot_directory)) {
2306: free(dst->chroot_directory);
2307: dst->chroot_directory = NULL;
2308: }
1.153 dtucker 2309: }
1.168 dtucker 2310:
2311: #undef M_CP_INTOPT
2312: #undef M_CP_STROPT
1.219 djm 2313: #undef M_CP_STRARRAYOPT
1.153 dtucker 2314:
2315: void
1.338 markus 2316: parse_server_config(ServerOptions *options, const char *filename,
2317: struct sshbuf *conf, struct connection_info *connectinfo)
1.134 djm 2318: {
1.153 dtucker 2319: int active, linenum, bad_options = 0;
1.136 dtucker 2320: char *cp, *obuf, *cbuf;
1.134 djm 2321:
1.338 markus 2322: debug2("%s: config %s len %zu", __func__, filename, sshbuf_len(conf));
1.134 djm 2323:
1.287 djm 2324: if ((obuf = cbuf = sshbuf_dup_string(conf)) == NULL)
2325: fatal("%s: sshbuf_dup_string failed", __func__);
1.226 dtucker 2326: active = connectinfo ? 0 : 1;
1.137 dtucker 2327: linenum = 1;
1.140 deraadt 2328: while ((cp = strsep(&cbuf, "\n")) != NULL) {
1.134 djm 2329: if (process_server_config_line(options, cp, filename,
1.226 dtucker 2330: linenum++, &active, connectinfo) != 0)
1.94 markus 2331: bad_options++;
1.1 deraadt 2332: }
1.239 djm 2333: free(obuf);
1.78 stevesk 2334: if (bad_options > 0)
2335: fatal("%s: terminating, %d bad configuration options",
2336: filename, bad_options);
1.266 dtucker 2337: process_queued_listen_addrs(options);
1.182 dtucker 2338: }
2339:
2340: static const char *
1.221 djm 2341: fmt_multistate_int(int val, const struct multistate *m)
2342: {
2343: u_int i;
2344:
2345: for (i = 0; m[i].key != NULL; i++) {
2346: if (m[i].value == val)
2347: return m[i].key;
2348: }
2349: return "UNKNOWN";
2350: }
2351:
2352: static const char *
1.182 dtucker 2353: fmt_intarg(ServerOpCodes code, int val)
2354: {
1.221 djm 2355: if (val == -1)
2356: return "unset";
2357: switch (code) {
2358: case sAddressFamily:
2359: return fmt_multistate_int(val, multistate_addressfamily);
2360: case sPermitRootLogin:
2361: return fmt_multistate_int(val, multistate_permitrootlogin);
2362: case sGatewayPorts:
2363: return fmt_multistate_int(val, multistate_gatewayports);
2364: case sCompression:
2365: return fmt_multistate_int(val, multistate_compression);
1.233 djm 2366: case sAllowTcpForwarding:
2367: return fmt_multistate_int(val, multistate_tcpfwd);
1.251 millert 2368: case sAllowStreamLocalForwarding:
2369: return fmt_multistate_int(val, multistate_tcpfwd);
1.256 djm 2370: case sFingerprintHash:
2371: return ssh_digest_alg_name(val);
1.221 djm 2372: default:
2373: switch (val) {
2374: case 0:
2375: return "no";
2376: case 1:
2377: return "yes";
2378: default:
2379: return "UNKNOWN";
2380: }
1.182 dtucker 2381: }
2382: }
2383:
2384: static void
2385: dump_cfg_int(ServerOpCodes code, int val)
2386: {
2387: printf("%s %d\n", lookup_opcode_name(code), val);
2388: }
2389:
2390: static void
1.263 dtucker 2391: dump_cfg_oct(ServerOpCodes code, int val)
2392: {
2393: printf("%s 0%o\n", lookup_opcode_name(code), val);
2394: }
2395:
2396: static void
1.182 dtucker 2397: dump_cfg_fmtint(ServerOpCodes code, int val)
2398: {
2399: printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
2400: }
2401:
2402: static void
2403: dump_cfg_string(ServerOpCodes code, const char *val)
2404: {
1.257 djm 2405: printf("%s %s\n", lookup_opcode_name(code),
2406: val == NULL ? "none" : val);
1.182 dtucker 2407: }
2408:
2409: static void
2410: dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
2411: {
2412: u_int i;
2413:
2414: for (i = 0; i < count; i++)
1.219 djm 2415: printf("%s %s\n", lookup_opcode_name(code), vals[i]);
2416: }
2417:
2418: static void
2419: dump_cfg_strarray_oneline(ServerOpCodes code, u_int count, char **vals)
2420: {
2421: u_int i;
2422:
1.291 djm 2423: if (count <= 0 && code != sAuthenticationMethods)
1.261 dtucker 2424: return;
1.219 djm 2425: printf("%s", lookup_opcode_name(code));
2426: for (i = 0; i < count; i++)
2427: printf(" %s", vals[i]);
1.291 djm 2428: if (code == sAuthenticationMethods && count == 0)
2429: printf(" any");
1.219 djm 2430: printf("\n");
1.182 dtucker 2431: }
2432:
1.315 djm 2433: static char *
2434: format_listen_addrs(struct listenaddr *la)
1.182 dtucker 2435: {
1.315 djm 2436: int r;
1.182 dtucker 2437: struct addrinfo *ai;
1.315 djm 2438: char addr[NI_MAXHOST], port[NI_MAXSERV];
1.263 dtucker 2439: char *laddr1 = xstrdup(""), *laddr2 = NULL;
1.182 dtucker 2440:
1.263 dtucker 2441: /*
2442: * ListenAddress must be after Port. add_one_listen_addr pushes
2443: * addresses onto a stack, so to maintain ordering we need to
2444: * print these in reverse order.
2445: */
1.315 djm 2446: for (ai = la->addrs; ai; ai = ai->ai_next) {
2447: if ((r = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
1.182 dtucker 2448: sizeof(addr), port, sizeof(port),
2449: NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
1.315 djm 2450: error("getnameinfo: %.100s", ssh_gai_strerror(r));
2451: continue;
2452: }
2453: laddr2 = laddr1;
2454: if (ai->ai_family == AF_INET6) {
2455: xasprintf(&laddr1, "listenaddress [%s]:%s%s%s\n%s",
2456: addr, port,
2457: la->rdomain == NULL ? "" : " rdomain ",
2458: la->rdomain == NULL ? "" : la->rdomain,
2459: laddr2);
1.182 dtucker 2460: } else {
1.315 djm 2461: xasprintf(&laddr1, "listenaddress %s:%s%s%s\n%s",
2462: addr, port,
2463: la->rdomain == NULL ? "" : " rdomain ",
2464: la->rdomain == NULL ? "" : la->rdomain,
2465: laddr2);
1.182 dtucker 2466: }
1.315 djm 2467: free(laddr2);
2468: }
2469: return laddr1;
2470: }
2471:
2472: void
2473: dump_config(ServerOptions *o)
2474: {
2475: char *s;
2476: u_int i;
2477:
2478: /* these are usually at the top of the config */
2479: for (i = 0; i < o->num_ports; i++)
2480: printf("port %d\n", o->ports[i]);
2481: dump_cfg_fmtint(sAddressFamily, o->address_family);
2482:
2483: for (i = 0; i < o->num_listen_addrs; i++) {
2484: s = format_listen_addrs(&o->listen_addrs[i]);
2485: printf("%s", s);
2486: free(s);
1.182 dtucker 2487: }
2488:
2489: /* integer arguments */
2490: dump_cfg_int(sLoginGraceTime, o->login_grace_time);
2491: dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
2492: dump_cfg_int(sMaxAuthTries, o->max_authtries);
1.189 djm 2493: dump_cfg_int(sMaxSessions, o->max_sessions);
1.182 dtucker 2494: dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
2495: dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
1.263 dtucker 2496: dump_cfg_oct(sStreamLocalBindMask, o->fwd_opts.streamlocal_bind_mask);
1.182 dtucker 2497:
2498: /* formatted integer arguments */
2499: dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
2500: dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
2501: dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
2502: dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
2503: dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
2504: o->hostbased_uses_name_from_packet_only);
2505: dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
1.187 djm 2506: #ifdef KRB5
1.182 dtucker 2507: dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
2508: dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
2509: dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
2510: dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
1.187 djm 2511: #endif
2512: #ifdef GSSAPI
1.182 dtucker 2513: dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
2514: dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
1.187 djm 2515: #endif
1.182 dtucker 2516: dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
2517: dump_cfg_fmtint(sKbdInteractiveAuthentication,
2518: o->kbd_interactive_authentication);
2519: dump_cfg_fmtint(sChallengeResponseAuthentication,
2520: o->challenge_response_authentication);
2521: dump_cfg_fmtint(sPrintMotd, o->print_motd);
2522: dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
2523: dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
2524: dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
1.244 djm 2525: dump_cfg_fmtint(sPermitTTY, o->permit_tty);
1.250 djm 2526: dump_cfg_fmtint(sPermitUserRC, o->permit_user_rc);
1.182 dtucker 2527: dump_cfg_fmtint(sStrictModes, o->strict_modes);
2528: dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
2529: dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
2530: dump_cfg_fmtint(sCompression, o->compression);
1.251 millert 2531: dump_cfg_fmtint(sGatewayPorts, o->fwd_opts.gateway_ports);
1.182 dtucker 2532: dump_cfg_fmtint(sUseDNS, o->use_dns);
2533: dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
1.261 dtucker 2534: dump_cfg_fmtint(sAllowAgentForwarding, o->allow_agent_forwarding);
1.301 djm 2535: dump_cfg_fmtint(sDisableForwarding, o->disable_forwarding);
1.251 millert 2536: dump_cfg_fmtint(sAllowStreamLocalForwarding, o->allow_streamlocal_forwarding);
1.288 djm 2537: dump_cfg_fmtint(sStreamLocalBindUnlink, o->fwd_opts.streamlocal_bind_unlink);
1.256 djm 2538: dump_cfg_fmtint(sFingerprintHash, o->fingerprint_hash);
1.309 djm 2539: dump_cfg_fmtint(sExposeAuthInfo, o->expose_userauth_info);
1.182 dtucker 2540:
2541: /* string arguments */
2542: dump_cfg_string(sPidFile, o->pid_file);
2543: dump_cfg_string(sXAuthLocation, o->xauth_location);
1.252 djm 2544: dump_cfg_string(sCiphers, o->ciphers ? o->ciphers : KEX_SERVER_ENCRYPT);
2545: dump_cfg_string(sMacs, o->macs ? o->macs : KEX_SERVER_MAC);
1.182 dtucker 2546: dump_cfg_string(sBanner, o->banner);
2547: dump_cfg_string(sForceCommand, o->adm_forced_command);
1.201 dtucker 2548: dump_cfg_string(sChrootDirectory, o->chroot_directory);
1.204 djm 2549: dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
2550: dump_cfg_string(sRevokedKeys, o->revoked_keys_file);
1.208 djm 2551: dump_cfg_string(sAuthorizedPrincipalsFile,
2552: o->authorized_principals_file);
1.261 dtucker 2553: dump_cfg_string(sVersionAddendum, *o->version_addendum == '\0'
2554: ? "none" : o->version_addendum);
1.231 djm 2555: dump_cfg_string(sAuthorizedKeysCommand, o->authorized_keys_command);
2556: dump_cfg_string(sAuthorizedKeysCommandUser, o->authorized_keys_command_user);
1.270 djm 2557: dump_cfg_string(sAuthorizedPrincipalsCommand, o->authorized_principals_command);
2558: dump_cfg_string(sAuthorizedPrincipalsCommandUser, o->authorized_principals_command_user);
1.240 markus 2559: dump_cfg_string(sHostKeyAgent, o->host_key_agent);
1.252 djm 2560: dump_cfg_string(sKexAlgorithms,
1.253 djm 2561: o->kex_algorithms ? o->kex_algorithms : KEX_SERVER_KEX);
1.341 djm 2562: dump_cfg_string(sCASignatureAlgorithms, o->ca_sign_algorithms ?
2563: o->ca_sign_algorithms : SSH_ALLOWED_CA_SIGALGS);
1.258 djm 2564: dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types ?
2565: o->hostbased_key_types : KEX_DEFAULT_PK_ALG);
1.276 markus 2566: dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms ?
2567: o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
1.258 djm 2568: dump_cfg_string(sPubkeyAcceptedKeyTypes, o->pubkey_key_types ?
2569: o->pubkey_key_types : KEX_DEFAULT_PK_ALG);
1.316 djm 2570: dump_cfg_string(sRDomain, o->routing_domain);
1.182 dtucker 2571:
2572: /* string arguments requiring a lookup */
2573: dump_cfg_string(sLogLevel, log_level_name(o->log_level));
2574: dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
2575:
2576: /* string array arguments */
1.219 djm 2577: dump_cfg_strarray_oneline(sAuthorizedKeysFile, o->num_authkeys_files,
2578: o->authorized_keys_files);
1.182 dtucker 2579: dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
2580: o->host_key_files);
1.261 dtucker 2581: dump_cfg_strarray(sHostCertificate, o->num_host_cert_files,
1.203 djm 2582: o->host_cert_files);
1.182 dtucker 2583: dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
2584: dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
2585: dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
2586: dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
2587: dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
1.332 djm 2588: dump_cfg_strarray(sSetEnv, o->num_setenv, o->setenv);
1.232 djm 2589: dump_cfg_strarray_oneline(sAuthenticationMethods,
2590: o->num_auth_methods, o->auth_methods);
1.182 dtucker 2591:
2592: /* other arguments */
2593: for (i = 0; i < o->num_subsystems; i++)
2594: printf("subsystem %s %s\n", o->subsystem_name[i],
2595: o->subsystem_args[i]);
2596:
2597: printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
2598: o->max_startups_rate, o->max_startups);
2599:
1.318 djm 2600: s = NULL;
2601: for (i = 0; tunmode_desc[i].val != -1; i++) {
1.182 dtucker 2602: if (tunmode_desc[i].val == o->permit_tun) {
2603: s = tunmode_desc[i].text;
2604: break;
2605: }
1.318 djm 2606: }
1.182 dtucker 2607: dump_cfg_string(sPermitTunnel, s);
1.213 djm 2608:
1.214 stevesk 2609: printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
2610: printf("%s\n", iptos2str(o->ip_qos_bulk));
1.235 dtucker 2611:
1.284 dtucker 2612: printf("rekeylimit %llu %d\n", (unsigned long long)o->rekey_limit,
1.241 djm 2613: o->rekey_interval);
1.182 dtucker 2614:
1.310 djm 2615: printf("permitopen");
2616: if (o->num_permitted_opens == 0)
2617: printf(" any");
2618: else {
2619: for (i = 0; i < o->num_permitted_opens; i++)
2620: printf(" %s", o->permitted_opens[i]);
1.329 djm 2621: }
2622: printf("\n");
1.330 djm 2623: printf("permitlisten");
2624: if (o->num_permitted_listens == 0)
1.329 djm 2625: printf(" any");
2626: else {
1.330 djm 2627: for (i = 0; i < o->num_permitted_listens; i++)
2628: printf(" %s", o->permitted_listens[i]);
1.310 djm 2629: }
2630: printf("\n");
1.334 djm 2631:
2632: if (o->permit_user_env_whitelist == NULL) {
2633: dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
2634: } else {
2635: printf("permituserenvironment %s\n",
2636: o->permit_user_env_whitelist);
2637: }
2638:
1.1 deraadt 2639: }