Annotation of src/usr.bin/ssh/servconf.c, Revision 1.89
1.1 deraadt 1: /*
1.26 deraadt 2: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
3: * All rights reserved
1.34 markus 4: *
1.51 deraadt 5: * As far as I am concerned, the code I have written for this software
6: * can be used freely for any purpose. Any derived versions of this
7: * software must be clearly marked as such, and if the derived work is
8: * incompatible with the protocol description in the RFC file, it must be
9: * called by a name other than "ssh" or "Secure Shell".
1.26 deraadt 10: */
1.1 deraadt 11:
12: #include "includes.h"
1.89 ! jakob 13: RCSID("$OpenBSD: servconf.c,v 1.88 2001/07/11 00:24:53 itojun Exp $");
1.62 markus 14:
1.88 itojun 15: #if defined(KRB4) || defined(KRB5)
1.62 markus 16: #include <krb.h>
1.86 dugsong 17: #endif
18: #ifdef AFS
19: #include <kafs.h>
1.62 markus 20: #endif
1.1 deraadt 21:
22: #include "ssh.h"
1.62 markus 23: #include "log.h"
1.1 deraadt 24: #include "servconf.h"
25: #include "xmalloc.h"
1.33 markus 26: #include "compat.h"
1.60 markus 27: #include "pathnames.h"
1.62 markus 28: #include "tildexpand.h"
29: #include "misc.h"
30: #include "cipher.h"
1.66 markus 31: #include "kex.h"
32: #include "mac.h"
1.1 deraadt 33:
1.84 itojun 34: static void add_listen_addr(ServerOptions *, char *, u_short);
35: static void add_one_listen_addr(ServerOptions *, char *, u_short);
1.29 markus 36:
1.62 markus 37: /* AF_UNSPEC or AF_INET or AF_INET6 */
38: extern int IPv4or6;
39:
1.1 deraadt 40: /* Initializes the server options to their default values. */
41:
1.34 markus 42: void
1.25 markus 43: initialize_server_options(ServerOptions *options)
1.1 deraadt 44: {
1.25 markus 45: memset(options, 0, sizeof(*options));
1.29 markus 46: options->num_ports = 0;
47: options->ports_from_cmdline = 0;
48: options->listen_addrs = NULL;
1.54 markus 49: options->num_host_key_files = 0;
1.36 markus 50: options->pid_file = NULL;
1.25 markus 51: options->server_key_bits = -1;
52: options->login_grace_time = -1;
53: options->key_regeneration_time = -1;
1.67 markus 54: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 55: options->ignore_rhosts = -1;
56: options->ignore_user_known_hosts = -1;
57: options->print_motd = -1;
1.72 stevesk 58: options->print_lastlog = -1;
1.25 markus 59: options->x11_forwarding = -1;
60: options->x11_display_offset = -1;
1.42 markus 61: options->xauth_location = NULL;
1.25 markus 62: options->strict_modes = -1;
63: options->keepalives = -1;
64: options->log_facility = (SyslogFacility) - 1;
65: options->log_level = (LogLevel) - 1;
66: options->rhosts_authentication = -1;
67: options->rhosts_rsa_authentication = -1;
1.75 markus 68: options->hostbased_authentication = -1;
69: options->hostbased_uses_name_from_packet_only = -1;
1.25 markus 70: options->rsa_authentication = -1;
1.54 markus 71: options->pubkey_authentication = -1;
1.85 dugsong 72: #if defined(KRB4) || defined(KRB5)
1.25 markus 73: options->kerberos_authentication = -1;
74: options->kerberos_or_local_passwd = -1;
75: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 76: #endif
1.85 dugsong 77: #if defined(AFS) || defined(KRB5)
78: options->kerberos_tgt_passing = -1;
79: #endif
1.4 dugsong 80: #ifdef AFS
1.25 markus 81: options->afs_token_passing = -1;
1.1 deraadt 82: #endif
1.25 markus 83: options->password_authentication = -1;
1.52 markus 84: options->kbd_interactive_authentication = -1;
1.80 markus 85: options->challenge_response_authentication = -1;
1.25 markus 86: options->permit_empty_passwd = -1;
87: options->use_login = -1;
1.53 markus 88: options->allow_tcp_forwarding = -1;
1.25 markus 89: options->num_allow_users = 0;
90: options->num_deny_users = 0;
91: options->num_allow_groups = 0;
92: options->num_deny_groups = 0;
1.33 markus 93: options->ciphers = NULL;
1.66 markus 94: options->macs = NULL;
1.33 markus 95: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 96: options->gateway_ports = -1;
1.43 jakob 97: options->num_subsystems = 0;
1.50 markus 98: options->max_startups_begin = -1;
99: options->max_startups_rate = -1;
1.46 markus 100: options->max_startups = -1;
1.57 markus 101: options->banner = NULL;
1.64 markus 102: options->reverse_mapping_check = -1;
1.77 beck 103: options->client_alive_interval = -1;
104: options->client_alive_count_max = -1;
1.82 markus 105: options->authorized_keys_file = NULL;
106: options->authorized_keys_file2 = NULL;
1.1 deraadt 107: }
108:
1.34 markus 109: void
1.25 markus 110: fill_default_server_options(ServerOptions *options)
1.1 deraadt 111: {
1.54 markus 112: if (options->protocol == SSH_PROTO_UNKNOWN)
113: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
114: if (options->num_host_key_files == 0) {
115: /* fill default hostkeys for protocols */
116: if (options->protocol & SSH_PROTO_1)
1.60 markus 117: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 118: if (options->protocol & SSH_PROTO_2)
1.60 markus 119: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 120: }
1.29 markus 121: if (options->num_ports == 0)
122: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
123: if (options->listen_addrs == NULL)
1.76 stevesk 124: add_listen_addr(options, NULL, 0);
1.36 markus 125: if (options->pid_file == NULL)
1.60 markus 126: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 127: if (options->server_key_bits == -1)
128: options->server_key_bits = 768;
129: if (options->login_grace_time == -1)
130: options->login_grace_time = 600;
131: if (options->key_regeneration_time == -1)
132: options->key_regeneration_time = 3600;
1.67 markus 133: if (options->permit_root_login == PERMIT_NOT_SET)
134: options->permit_root_login = PERMIT_YES;
1.25 markus 135: if (options->ignore_rhosts == -1)
1.30 markus 136: options->ignore_rhosts = 1;
1.25 markus 137: if (options->ignore_user_known_hosts == -1)
138: options->ignore_user_known_hosts = 0;
139: if (options->print_motd == -1)
140: options->print_motd = 1;
1.72 stevesk 141: if (options->print_lastlog == -1)
142: options->print_lastlog = 1;
1.25 markus 143: if (options->x11_forwarding == -1)
1.30 markus 144: options->x11_forwarding = 0;
1.25 markus 145: if (options->x11_display_offset == -1)
1.30 markus 146: options->x11_display_offset = 10;
1.83 markus 147: #ifdef _PATH_XAUTH
1.42 markus 148: if (options->xauth_location == NULL)
1.83 markus 149: options->xauth_location = _PATH_XAUTH;
150: #endif
1.25 markus 151: if (options->strict_modes == -1)
152: options->strict_modes = 1;
153: if (options->keepalives == -1)
154: options->keepalives = 1;
155: if (options->log_facility == (SyslogFacility) (-1))
156: options->log_facility = SYSLOG_FACILITY_AUTH;
157: if (options->log_level == (LogLevel) (-1))
1.58 markus 158: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 159: if (options->rhosts_authentication == -1)
160: options->rhosts_authentication = 0;
161: if (options->rhosts_rsa_authentication == -1)
1.30 markus 162: options->rhosts_rsa_authentication = 0;
1.75 markus 163: if (options->hostbased_authentication == -1)
164: options->hostbased_authentication = 0;
165: if (options->hostbased_uses_name_from_packet_only == -1)
166: options->hostbased_uses_name_from_packet_only = 0;
1.25 markus 167: if (options->rsa_authentication == -1)
168: options->rsa_authentication = 1;
1.54 markus 169: if (options->pubkey_authentication == -1)
170: options->pubkey_authentication = 1;
1.85 dugsong 171: #if defined(KRB4) || defined(KRB5)
1.25 markus 172: if (options->kerberos_authentication == -1)
173: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
174: if (options->kerberos_or_local_passwd == -1)
175: options->kerberos_or_local_passwd = 1;
176: if (options->kerberos_ticket_cleanup == -1)
177: options->kerberos_ticket_cleanup = 1;
1.85 dugsong 178: #endif
179: #if defined(AFS) || defined(KRB5)
1.25 markus 180: if (options->kerberos_tgt_passing == -1)
181: options->kerberos_tgt_passing = 0;
1.85 dugsong 182: #endif
183: #ifdef AFS
1.25 markus 184: if (options->afs_token_passing == -1)
185: options->afs_token_passing = k_hasafs();
1.85 dugsong 186: #endif
1.25 markus 187: if (options->password_authentication == -1)
188: options->password_authentication = 1;
1.52 markus 189: if (options->kbd_interactive_authentication == -1)
190: options->kbd_interactive_authentication = 0;
1.80 markus 191: if (options->challenge_response_authentication == -1)
192: options->challenge_response_authentication = 1;
1.25 markus 193: if (options->permit_empty_passwd == -1)
1.30 markus 194: options->permit_empty_passwd = 0;
1.25 markus 195: if (options->use_login == -1)
196: options->use_login = 0;
1.53 markus 197: if (options->allow_tcp_forwarding == -1)
198: options->allow_tcp_forwarding = 1;
1.38 markus 199: if (options->gateway_ports == -1)
200: options->gateway_ports = 0;
1.46 markus 201: if (options->max_startups == -1)
202: options->max_startups = 10;
1.50 markus 203: if (options->max_startups_rate == -1)
204: options->max_startups_rate = 100; /* 100% */
205: if (options->max_startups_begin == -1)
206: options->max_startups_begin = options->max_startups;
1.64 markus 207: if (options->reverse_mapping_check == -1)
208: options->reverse_mapping_check = 0;
1.77 beck 209: if (options->client_alive_interval == -1)
210: options->client_alive_interval = 0;
211: if (options->client_alive_count_max == -1)
212: options->client_alive_count_max = 3;
1.82 markus 213: if (options->authorized_keys_file == NULL)
214: options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS;
215: if (options->authorized_keys_file2 == NULL)
216: options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2;
1.1 deraadt 217: }
218:
219: /* Keyword tokens. */
1.25 markus 220: typedef enum {
221: sBadOption, /* == unknown option */
222: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
223: sPermitRootLogin, sLogFacility, sLogLevel,
224: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.85 dugsong 225: #if defined(KRB4) || defined(KRB5)
1.25 markus 226: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 227: #endif
1.85 dugsong 228: #if defined(AFS) || defined(KRB5)
229: sKerberosTgtPassing,
230: #endif
1.1 deraadt 231: #ifdef AFS
1.85 dugsong 232: sAFSTokenPassing,
1.1 deraadt 233: #endif
1.63 markus 234: sChallengeResponseAuthentication,
1.52 markus 235: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.72 stevesk 236: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
237: sX11Forwarding, sX11DisplayOffset,
1.89 ! jakob 238: sStrictModes, sEmptyPasswd, sKeepAlives,
1.53 markus 239: sUseLogin, sAllowTcpForwarding,
240: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 241: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.54 markus 242: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.75 markus 243: sBanner, sReverseMappingCheck, sHostbasedAuthentication,
1.77 beck 244: sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
1.89 ! jakob 245: sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2,
! 246: sDeprecated
1.1 deraadt 247: } ServerOpCodes;
248:
249: /* Textual representation of the tokens. */
1.25 markus 250: static struct {
251: const char *name;
252: ServerOpCodes opcode;
253: } keywords[] = {
254: { "port", sPort },
255: { "hostkey", sHostKeyFile },
1.54 markus 256: { "hostdsakey", sHostKeyFile }, /* alias */
1.65 stevesk 257: { "pidfile", sPidFile },
1.25 markus 258: { "serverkeybits", sServerKeyBits },
259: { "logingracetime", sLoginGraceTime },
260: { "keyregenerationinterval", sKeyRegenerationTime },
261: { "permitrootlogin", sPermitRootLogin },
262: { "syslogfacility", sLogFacility },
263: { "loglevel", sLogLevel },
264: { "rhostsauthentication", sRhostsAuthentication },
265: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
1.75 markus 266: { "hostbasedauthentication", sHostbasedAuthentication },
267: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly },
1.25 markus 268: { "rsaauthentication", sRSAAuthentication },
1.54 markus 269: { "pubkeyauthentication", sPubkeyAuthentication },
270: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.85 dugsong 271: #if defined(KRB4) || defined(KRB5)
1.25 markus 272: { "kerberosauthentication", sKerberosAuthentication },
273: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
274: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 275: #endif
1.85 dugsong 276: #if defined(AFS) || defined(KRB5)
277: { "kerberostgtpassing", sKerberosTgtPassing },
278: #endif
1.4 dugsong 279: #ifdef AFS
1.25 markus 280: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 281: #endif
1.25 markus 282: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 283: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.63 markus 284: { "challengeresponseauthentication", sChallengeResponseAuthentication },
285: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.89 ! jakob 286: { "checkmail", sDeprecated },
1.25 markus 287: { "listenaddress", sListenAddress },
288: { "printmotd", sPrintMotd },
1.72 stevesk 289: { "printlastlog", sPrintLastLog },
1.25 markus 290: { "ignorerhosts", sIgnoreRhosts },
291: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
292: { "x11forwarding", sX11Forwarding },
293: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 294: { "xauthlocation", sXAuthLocation },
1.25 markus 295: { "strictmodes", sStrictModes },
296: { "permitemptypasswords", sEmptyPasswd },
297: { "uselogin", sUseLogin },
298: { "keepalive", sKeepAlives },
1.53 markus 299: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 300: { "allowusers", sAllowUsers },
301: { "denyusers", sDenyUsers },
302: { "allowgroups", sAllowGroups },
303: { "denygroups", sDenyGroups },
1.33 markus 304: { "ciphers", sCiphers },
1.66 markus 305: { "macs", sMacs },
1.33 markus 306: { "protocol", sProtocol },
1.38 markus 307: { "gatewayports", sGatewayPorts },
1.43 jakob 308: { "subsystem", sSubsystem },
1.46 markus 309: { "maxstartups", sMaxStartups },
1.57 markus 310: { "banner", sBanner },
1.64 markus 311: { "reversemappingcheck", sReverseMappingCheck },
1.77 beck 312: { "clientaliveinterval", sClientAliveInterval },
313: { "clientalivecountmax", sClientAliveCountMax },
1.82 markus 314: { "authorizedkeysfile", sAuthorizedKeysFile },
315: { "authorizedkeysfile2", sAuthorizedKeysFile2 },
1.25 markus 316: { NULL, 0 }
1.1 deraadt 317: };
318:
1.27 markus 319: /*
1.73 stevesk 320: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 321: */
1.1 deraadt 322:
1.34 markus 323: static ServerOpCodes
1.25 markus 324: parse_token(const char *cp, const char *filename,
325: int linenum)
1.1 deraadt 326: {
1.55 markus 327: u_int i;
1.1 deraadt 328:
1.25 markus 329: for (i = 0; keywords[i].name; i++)
1.28 markus 330: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 331: return keywords[i].opcode;
332:
1.78 stevesk 333: error("%s: line %d: Bad configuration option: %s",
334: filename, linenum, cp);
1.25 markus 335: return sBadOption;
1.1 deraadt 336: }
337:
1.84 itojun 338: static void
1.76 stevesk 339: add_listen_addr(ServerOptions *options, char *addr, u_short port)
1.74 stevesk 340: {
341: int i;
342:
343: if (options->num_ports == 0)
344: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.76 stevesk 345: if (port == 0)
1.74 stevesk 346: for (i = 0; i < options->num_ports; i++)
347: add_one_listen_addr(options, addr, options->ports[i]);
348: else
1.76 stevesk 349: add_one_listen_addr(options, addr, port);
1.74 stevesk 350: }
351:
1.84 itojun 352: static void
1.74 stevesk 353: add_one_listen_addr(ServerOptions *options, char *addr, u_short port)
1.29 markus 354: {
355: struct addrinfo hints, *ai, *aitop;
356: char strport[NI_MAXSERV];
357: int gaierr;
358:
1.74 stevesk 359: memset(&hints, 0, sizeof(hints));
360: hints.ai_family = IPv4or6;
361: hints.ai_socktype = SOCK_STREAM;
362: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
363: snprintf(strport, sizeof strport, "%d", port);
364: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
365: fatal("bad addr or host: %s (%s)",
366: addr ? addr : "<NULL>",
367: gai_strerror(gaierr));
368: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
369: ;
370: ai->ai_next = options->listen_addrs;
371: options->listen_addrs = aitop;
1.29 markus 372: }
373:
1.1 deraadt 374: /* Reads the server configuration file. */
375:
1.34 markus 376: void
1.25 markus 377: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 378: {
1.25 markus 379: FILE *f;
380: char line[1024];
1.74 stevesk 381: char *cp, **charptr, *arg, *p;
1.25 markus 382: int linenum, *intptr, value;
383: int bad_options = 0;
384: ServerOpCodes opcode;
1.87 stevesk 385: int i, n;
1.25 markus 386:
387: f = fopen(filename, "r");
388: if (!f) {
389: perror(filename);
1.1 deraadt 390: exit(1);
1.25 markus 391: }
392: linenum = 0;
393: while (fgets(line, sizeof(line), f)) {
394: linenum++;
1.48 provos 395: cp = line;
396: arg = strdelim(&cp);
397: /* Ignore leading whitespace */
398: if (*arg == '\0')
1.49 markus 399: arg = strdelim(&cp);
1.61 djm 400: if (!arg || !*arg || *arg == '#')
1.25 markus 401: continue;
1.54 markus 402: intptr = NULL;
403: charptr = NULL;
1.47 ho 404: opcode = parse_token(arg, filename, linenum);
1.25 markus 405: switch (opcode) {
406: case sBadOption:
407: bad_options++;
408: continue;
409: case sPort:
1.29 markus 410: /* ignore ports from configfile if cmdline specifies ports */
411: if (options->ports_from_cmdline)
412: continue;
413: if (options->listen_addrs != NULL)
414: fatal("%s line %d: ports must be specified before "
1.79 stevesk 415: "ListenAdress.", filename, linenum);
1.29 markus 416: if (options->num_ports >= MAX_PORTS)
1.70 millert 417: fatal("%s line %d: too many ports.",
1.34 markus 418: filename, linenum);
1.48 provos 419: arg = strdelim(&cp);
1.47 ho 420: if (!arg || *arg == '\0')
1.70 millert 421: fatal("%s line %d: missing port number.",
1.29 markus 422: filename, linenum);
1.76 stevesk 423: options->ports[options->num_ports++] = a2port(arg);
424: if (options->ports[options->num_ports-1] == 0)
425: fatal("%s line %d: Badly formatted port number.",
426: filename, linenum);
1.29 markus 427: break;
428:
429: case sServerKeyBits:
430: intptr = &options->server_key_bits;
1.25 markus 431: parse_int:
1.48 provos 432: arg = strdelim(&cp);
1.78 stevesk 433: if (!arg || *arg == '\0')
434: fatal("%s line %d: missing integer value.",
435: filename, linenum);
1.47 ho 436: value = atoi(arg);
1.25 markus 437: if (*intptr == -1)
438: *intptr = value;
439: break;
440:
441: case sLoginGraceTime:
442: intptr = &options->login_grace_time;
1.81 stevesk 443: parse_time:
444: arg = strdelim(&cp);
445: if (!arg || *arg == '\0')
446: fatal("%s line %d: missing time value.",
447: filename, linenum);
448: if ((value = convtime(arg)) == -1)
449: fatal("%s line %d: invalid time value.",
450: filename, linenum);
451: if (*intptr == -1)
452: *intptr = value;
453: break;
1.25 markus 454:
455: case sKeyRegenerationTime:
456: intptr = &options->key_regeneration_time;
1.81 stevesk 457: goto parse_time;
1.25 markus 458:
459: case sListenAddress:
1.48 provos 460: arg = strdelim(&cp);
1.74 stevesk 461: if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
1.70 millert 462: fatal("%s line %d: missing inet addr.",
1.29 markus 463: filename, linenum);
1.74 stevesk 464: if (*arg == '[') {
465: if ((p = strchr(arg, ']')) == NULL)
466: fatal("%s line %d: bad ipv6 inet addr usage.",
467: filename, linenum);
468: arg++;
469: memmove(p, p+1, strlen(p+1)+1);
470: } else if (((p = strchr(arg, ':')) == NULL) ||
471: (strchr(p+1, ':') != NULL)) {
1.76 stevesk 472: add_listen_addr(options, arg, 0);
1.74 stevesk 473: break;
474: }
475: if (*p == ':') {
1.76 stevesk 476: u_short port;
477:
1.74 stevesk 478: p++;
479: if (*p == '\0')
480: fatal("%s line %d: bad inet addr:port usage.",
481: filename, linenum);
482: else {
483: *(p-1) = '\0';
1.76 stevesk 484: if ((port = a2port(p)) == 0)
485: fatal("%s line %d: bad port number.",
486: filename, linenum);
487: add_listen_addr(options, arg, port);
1.74 stevesk 488: }
489: } else if (*p == '\0')
1.76 stevesk 490: add_listen_addr(options, arg, 0);
1.74 stevesk 491: else
492: fatal("%s line %d: bad inet addr usage.",
493: filename, linenum);
1.25 markus 494: break;
495:
496: case sHostKeyFile:
1.54 markus 497: intptr = &options->num_host_key_files;
1.78 stevesk 498: if (*intptr >= MAX_HOSTKEYS)
499: fatal("%s line %d: too many host keys specified (max %d).",
1.54 markus 500: filename, linenum, MAX_HOSTKEYS);
501: charptr = &options->host_key_files[*intptr];
1.42 markus 502: parse_filename:
1.48 provos 503: arg = strdelim(&cp);
1.78 stevesk 504: if (!arg || *arg == '\0')
505: fatal("%s line %d: missing file name.",
1.36 markus 506: filename, linenum);
1.54 markus 507: if (*charptr == NULL) {
1.47 ho 508: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 509: /* increase optional counter */
510: if (intptr != NULL)
511: *intptr = *intptr + 1;
512: }
1.36 markus 513: break;
514:
515: case sPidFile:
516: charptr = &options->pid_file;
1.42 markus 517: goto parse_filename;
1.25 markus 518:
519: case sPermitRootLogin:
520: intptr = &options->permit_root_login;
1.48 provos 521: arg = strdelim(&cp);
1.78 stevesk 522: if (!arg || *arg == '\0')
523: fatal("%s line %d: missing yes/"
1.71 stevesk 524: "without-password/forced-commands-only/no "
1.78 stevesk 525: "argument.", filename, linenum);
526: value = 0; /* silence compiler */
1.47 ho 527: if (strcmp(arg, "without-password") == 0)
1.67 markus 528: value = PERMIT_NO_PASSWD;
529: else if (strcmp(arg, "forced-commands-only") == 0)
530: value = PERMIT_FORCED_ONLY;
1.47 ho 531: else if (strcmp(arg, "yes") == 0)
1.67 markus 532: value = PERMIT_YES;
1.47 ho 533: else if (strcmp(arg, "no") == 0)
1.67 markus 534: value = PERMIT_NO;
1.78 stevesk 535: else
536: fatal("%s line %d: Bad yes/"
1.67 markus 537: "without-password/forced-commands-only/no "
1.78 stevesk 538: "argument: %s", filename, linenum, arg);
1.25 markus 539: if (*intptr == -1)
540: *intptr = value;
541: break;
542:
543: case sIgnoreRhosts:
544: intptr = &options->ignore_rhosts;
545: parse_flag:
1.48 provos 546: arg = strdelim(&cp);
1.78 stevesk 547: if (!arg || *arg == '\0')
548: fatal("%s line %d: missing yes/no argument.",
549: filename, linenum);
550: value = 0; /* silence compiler */
1.47 ho 551: if (strcmp(arg, "yes") == 0)
1.25 markus 552: value = 1;
1.47 ho 553: else if (strcmp(arg, "no") == 0)
1.25 markus 554: value = 0;
1.78 stevesk 555: else
556: fatal("%s line %d: Bad yes/no argument: %s",
1.47 ho 557: filename, linenum, arg);
1.25 markus 558: if (*intptr == -1)
559: *intptr = value;
560: break;
561:
562: case sIgnoreUserKnownHosts:
563: intptr = &options->ignore_user_known_hosts;
1.31 markus 564: goto parse_flag;
1.25 markus 565:
566: case sRhostsAuthentication:
567: intptr = &options->rhosts_authentication;
568: goto parse_flag;
569:
570: case sRhostsRSAAuthentication:
571: intptr = &options->rhosts_rsa_authentication;
1.75 markus 572: goto parse_flag;
573:
574: case sHostbasedAuthentication:
575: intptr = &options->hostbased_authentication;
576: goto parse_flag;
577:
578: case sHostbasedUsesNameFromPacketOnly:
579: intptr = &options->hostbased_uses_name_from_packet_only;
1.25 markus 580: goto parse_flag;
581:
582: case sRSAAuthentication:
583: intptr = &options->rsa_authentication;
1.39 markus 584: goto parse_flag;
585:
1.54 markus 586: case sPubkeyAuthentication:
587: intptr = &options->pubkey_authentication;
1.25 markus 588: goto parse_flag;
1.85 dugsong 589: #if defined(KRB4) || defined(KRB5)
1.25 markus 590: case sKerberosAuthentication:
591: intptr = &options->kerberos_authentication;
592: goto parse_flag;
593:
594: case sKerberosOrLocalPasswd:
595: intptr = &options->kerberos_or_local_passwd;
596: goto parse_flag;
597:
598: case sKerberosTicketCleanup:
599: intptr = &options->kerberos_ticket_cleanup;
600: goto parse_flag;
1.1 deraadt 601: #endif
1.85 dugsong 602: #if defined(AFS) || defined(KRB5)
1.25 markus 603: case sKerberosTgtPassing:
604: intptr = &options->kerberos_tgt_passing;
605: goto parse_flag;
1.85 dugsong 606: #endif
607: #ifdef AFS
1.25 markus 608: case sAFSTokenPassing:
609: intptr = &options->afs_token_passing;
610: goto parse_flag;
611: #endif
612:
613: case sPasswordAuthentication:
614: intptr = &options->password_authentication;
1.52 markus 615: goto parse_flag;
616:
617: case sKbdInteractiveAuthentication:
618: intptr = &options->kbd_interactive_authentication;
1.25 markus 619: goto parse_flag;
620:
1.63 markus 621: case sChallengeResponseAuthentication:
1.80 markus 622: intptr = &options->challenge_response_authentication;
1.25 markus 623: goto parse_flag;
624:
625: case sPrintMotd:
626: intptr = &options->print_motd;
1.72 stevesk 627: goto parse_flag;
628:
629: case sPrintLastLog:
630: intptr = &options->print_lastlog;
1.25 markus 631: goto parse_flag;
632:
633: case sX11Forwarding:
634: intptr = &options->x11_forwarding;
635: goto parse_flag;
636:
637: case sX11DisplayOffset:
638: intptr = &options->x11_display_offset;
639: goto parse_int;
640:
1.42 markus 641: case sXAuthLocation:
642: charptr = &options->xauth_location;
643: goto parse_filename;
1.65 stevesk 644:
1.25 markus 645: case sStrictModes:
646: intptr = &options->strict_modes;
647: goto parse_flag;
648:
649: case sKeepAlives:
650: intptr = &options->keepalives;
651: goto parse_flag;
652:
653: case sEmptyPasswd:
654: intptr = &options->permit_empty_passwd;
655: goto parse_flag;
656:
657: case sUseLogin:
658: intptr = &options->use_login;
1.38 markus 659: goto parse_flag;
660:
661: case sGatewayPorts:
662: intptr = &options->gateway_ports;
1.64 markus 663: goto parse_flag;
664:
665: case sReverseMappingCheck:
666: intptr = &options->reverse_mapping_check;
1.25 markus 667: goto parse_flag;
668:
669: case sLogFacility:
670: intptr = (int *) &options->log_facility;
1.48 provos 671: arg = strdelim(&cp);
1.47 ho 672: value = log_facility_number(arg);
1.25 markus 673: if (value == (SyslogFacility) - 1)
1.70 millert 674: fatal("%.200s line %d: unsupported log facility '%s'",
1.47 ho 675: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 676: if (*intptr == -1)
677: *intptr = (SyslogFacility) value;
678: break;
679:
680: case sLogLevel:
681: intptr = (int *) &options->log_level;
1.48 provos 682: arg = strdelim(&cp);
1.47 ho 683: value = log_level_number(arg);
1.25 markus 684: if (value == (LogLevel) - 1)
1.70 millert 685: fatal("%.200s line %d: unsupported log level '%s'",
1.47 ho 686: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 687: if (*intptr == -1)
688: *intptr = (LogLevel) value;
689: break;
1.53 markus 690:
691: case sAllowTcpForwarding:
692: intptr = &options->allow_tcp_forwarding;
693: goto parse_flag;
1.25 markus 694:
695: case sAllowUsers:
1.48 provos 696: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 697: if (options->num_allow_users >= MAX_ALLOW_USERS)
1.70 millert 698: fatal("%s line %d: too many allow users.",
1.33 markus 699: filename, linenum);
1.47 ho 700: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 701: }
702: break;
703:
704: case sDenyUsers:
1.48 provos 705: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 706: if (options->num_deny_users >= MAX_DENY_USERS)
1.70 millert 707: fatal( "%s line %d: too many deny users.",
1.33 markus 708: filename, linenum);
1.47 ho 709: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 710: }
711: break;
712:
713: case sAllowGroups:
1.48 provos 714: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 715: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1.70 millert 716: fatal("%s line %d: too many allow groups.",
1.33 markus 717: filename, linenum);
1.47 ho 718: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 719: }
720: break;
721:
722: case sDenyGroups:
1.48 provos 723: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 724: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1.70 millert 725: fatal("%s line %d: too many deny groups.",
1.33 markus 726: filename, linenum);
1.47 ho 727: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 728: }
1.33 markus 729: break;
730:
731: case sCiphers:
1.48 provos 732: arg = strdelim(&cp);
1.47 ho 733: if (!arg || *arg == '\0')
1.41 markus 734: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 735: if (!ciphers_valid(arg))
1.40 markus 736: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 737: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 738: if (options->ciphers == NULL)
1.47 ho 739: options->ciphers = xstrdup(arg);
1.66 markus 740: break;
741:
742: case sMacs:
743: arg = strdelim(&cp);
744: if (!arg || *arg == '\0')
745: fatal("%s line %d: Missing argument.", filename, linenum);
746: if (!mac_valid(arg))
747: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
748: filename, linenum, arg ? arg : "<NONE>");
749: if (options->macs == NULL)
750: options->macs = xstrdup(arg);
1.33 markus 751: break;
752:
753: case sProtocol:
754: intptr = &options->protocol;
1.48 provos 755: arg = strdelim(&cp);
1.47 ho 756: if (!arg || *arg == '\0')
1.41 markus 757: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 758: value = proto_spec(arg);
1.33 markus 759: if (value == SSH_PROTO_UNKNOWN)
760: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 761: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 762: if (*intptr == SSH_PROTO_UNKNOWN)
763: *intptr = value;
1.43 jakob 764: break;
765:
766: case sSubsystem:
767: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
768: fatal("%s line %d: too many subsystems defined.",
769: filename, linenum);
770: }
1.48 provos 771: arg = strdelim(&cp);
1.47 ho 772: if (!arg || *arg == '\0')
1.43 jakob 773: fatal("%s line %d: Missing subsystem name.",
774: filename, linenum);
775: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 776: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 777: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 778: filename, linenum, arg);
779: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 780: arg = strdelim(&cp);
1.47 ho 781: if (!arg || *arg == '\0')
1.43 jakob 782: fatal("%s line %d: Missing subsystem command.",
783: filename, linenum);
1.47 ho 784: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 785: options->num_subsystems++;
1.25 markus 786: break;
1.46 markus 787:
788: case sMaxStartups:
1.50 markus 789: arg = strdelim(&cp);
790: if (!arg || *arg == '\0')
791: fatal("%s line %d: Missing MaxStartups spec.",
792: filename, linenum);
1.87 stevesk 793: if ((n = sscanf(arg, "%d:%d:%d",
1.50 markus 794: &options->max_startups_begin,
795: &options->max_startups_rate,
1.87 stevesk 796: &options->max_startups)) == 3) {
1.50 markus 797: if (options->max_startups_begin >
798: options->max_startups ||
799: options->max_startups_rate > 100 ||
800: options->max_startups_rate < 1)
1.87 stevesk 801: fatal("%s line %d: Illegal MaxStartups spec.",
802: filename, linenum);
803: } else if (n != 1)
1.50 markus 804: fatal("%s line %d: Illegal MaxStartups spec.",
1.87 stevesk 805: filename, linenum);
806: else
807: options->max_startups = options->max_startups_begin;
808: break;
1.25 markus 809:
1.57 markus 810: case sBanner:
811: charptr = &options->banner;
1.82 markus 812: goto parse_filename;
813: /*
814: * These options can contain %X options expanded at
815: * connect time, so that you can specify paths like:
816: *
817: * AuthorizedKeysFile /etc/ssh_keys/%u
818: */
819: case sAuthorizedKeysFile:
820: case sAuthorizedKeysFile2:
821: charptr = (opcode == sAuthorizedKeysFile ) ?
822: &options->authorized_keys_file :
823: &options->authorized_keys_file2;
1.57 markus 824: goto parse_filename;
1.81 stevesk 825:
1.77 beck 826: case sClientAliveInterval:
827: intptr = &options->client_alive_interval;
1.81 stevesk 828: goto parse_time;
829:
1.77 beck 830: case sClientAliveCountMax:
831: intptr = &options->client_alive_count_max;
832: goto parse_int;
1.89 ! jakob 833:
! 834: case sDeprecated:
! 835: log("%s line %d: Deprecated option %s",
! 836: filename, linenum, arg);
! 837: while(arg)
! 838: arg = strdelim(&cp);
! 839: break;
1.81 stevesk 840:
1.25 markus 841: default:
1.78 stevesk 842: fatal("%s line %d: Missing handler for opcode %s (%d)",
843: filename, linenum, arg, opcode);
1.13 markus 844: }
1.78 stevesk 845: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
846: fatal("%s line %d: garbage at end of line; \"%.200s\".",
847: filename, linenum, arg);
1.1 deraadt 848: }
1.25 markus 849: fclose(f);
1.78 stevesk 850: if (bad_options > 0)
851: fatal("%s: terminating, %d bad configuration options",
852: filename, bad_options);
1.1 deraadt 853: }
![[BACK]](/icons/back.gif){kind=icon}
Return to servconf.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh