Annotation of src/usr.bin/ssh/servconf.c, Revision 1.83
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"
1.83 ! markus 13: RCSID("$OpenBSD: servconf.c,v 1.82 2001/05/20 17:20:35 markus Exp $");
1.62 markus 14:
15: #ifdef KRB4
16: #include <krb.h>
17: #endif
18: #ifdef AFS
19: #include <kafs.h>
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:
1.76 stevesk 34: void add_listen_addr(ServerOptions *options, char *addr, u_short port);
1.74 stevesk 35: void add_one_listen_addr(ServerOptions *options, char *addr, u_short port);
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->check_mail = -1;
60: options->x11_forwarding = -1;
61: options->x11_display_offset = -1;
1.42 markus 62: options->xauth_location = NULL;
1.25 markus 63: options->strict_modes = -1;
64: options->keepalives = -1;
65: options->log_facility = (SyslogFacility) - 1;
66: options->log_level = (LogLevel) - 1;
67: options->rhosts_authentication = -1;
68: options->rhosts_rsa_authentication = -1;
1.75 markus 69: options->hostbased_authentication = -1;
70: options->hostbased_uses_name_from_packet_only = -1;
1.25 markus 71: options->rsa_authentication = -1;
1.54 markus 72: options->pubkey_authentication = -1;
1.1 deraadt 73: #ifdef KRB4
1.25 markus 74: options->kerberos_authentication = -1;
75: options->kerberos_or_local_passwd = -1;
76: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 77: #endif
1.4 dugsong 78: #ifdef AFS
1.25 markus 79: options->kerberos_tgt_passing = -1;
80: options->afs_token_passing = -1;
1.1 deraadt 81: #endif
1.25 markus 82: options->password_authentication = -1;
1.52 markus 83: options->kbd_interactive_authentication = -1;
1.80 markus 84: options->challenge_response_authentication = -1;
1.25 markus 85: options->permit_empty_passwd = -1;
86: options->use_login = -1;
1.53 markus 87: options->allow_tcp_forwarding = -1;
1.25 markus 88: options->num_allow_users = 0;
89: options->num_deny_users = 0;
90: options->num_allow_groups = 0;
91: options->num_deny_groups = 0;
1.33 markus 92: options->ciphers = NULL;
1.66 markus 93: options->macs = NULL;
1.33 markus 94: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 95: options->gateway_ports = -1;
1.43 jakob 96: options->num_subsystems = 0;
1.50 markus 97: options->max_startups_begin = -1;
98: options->max_startups_rate = -1;
1.46 markus 99: options->max_startups = -1;
1.57 markus 100: options->banner = NULL;
1.64 markus 101: options->reverse_mapping_check = -1;
1.77 beck 102: options->client_alive_interval = -1;
103: options->client_alive_count_max = -1;
1.82 markus 104: options->authorized_keys_file = NULL;
105: options->authorized_keys_file2 = NULL;
1.1 deraadt 106: }
107:
1.34 markus 108: void
1.25 markus 109: fill_default_server_options(ServerOptions *options)
1.1 deraadt 110: {
1.54 markus 111: if (options->protocol == SSH_PROTO_UNKNOWN)
112: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
113: if (options->num_host_key_files == 0) {
114: /* fill default hostkeys for protocols */
115: if (options->protocol & SSH_PROTO_1)
1.60 markus 116: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 117: if (options->protocol & SSH_PROTO_2)
1.60 markus 118: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 119: }
1.29 markus 120: if (options->num_ports == 0)
121: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
122: if (options->listen_addrs == NULL)
1.76 stevesk 123: add_listen_addr(options, NULL, 0);
1.36 markus 124: if (options->pid_file == NULL)
1.60 markus 125: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 126: if (options->server_key_bits == -1)
127: options->server_key_bits = 768;
128: if (options->login_grace_time == -1)
129: options->login_grace_time = 600;
130: if (options->key_regeneration_time == -1)
131: options->key_regeneration_time = 3600;
1.67 markus 132: if (options->permit_root_login == PERMIT_NOT_SET)
133: options->permit_root_login = PERMIT_YES;
1.25 markus 134: if (options->ignore_rhosts == -1)
1.30 markus 135: options->ignore_rhosts = 1;
1.25 markus 136: if (options->ignore_user_known_hosts == -1)
137: options->ignore_user_known_hosts = 0;
138: if (options->check_mail == -1)
139: options->check_mail = 0;
140: if (options->print_motd == -1)
141: options->print_motd = 1;
1.72 stevesk 142: if (options->print_lastlog == -1)
143: options->print_lastlog = 1;
1.25 markus 144: if (options->x11_forwarding == -1)
1.30 markus 145: options->x11_forwarding = 0;
1.25 markus 146: if (options->x11_display_offset == -1)
1.30 markus 147: options->x11_display_offset = 10;
1.83 ! markus 148: #ifdef _PATH_XAUTH
1.42 markus 149: if (options->xauth_location == NULL)
1.83 ! markus 150: options->xauth_location = _PATH_XAUTH;
! 151: #endif
1.25 markus 152: if (options->strict_modes == -1)
153: options->strict_modes = 1;
154: if (options->keepalives == -1)
155: options->keepalives = 1;
156: if (options->log_facility == (SyslogFacility) (-1))
157: options->log_facility = SYSLOG_FACILITY_AUTH;
158: if (options->log_level == (LogLevel) (-1))
1.58 markus 159: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 160: if (options->rhosts_authentication == -1)
161: options->rhosts_authentication = 0;
162: if (options->rhosts_rsa_authentication == -1)
1.30 markus 163: options->rhosts_rsa_authentication = 0;
1.75 markus 164: if (options->hostbased_authentication == -1)
165: options->hostbased_authentication = 0;
166: if (options->hostbased_uses_name_from_packet_only == -1)
167: options->hostbased_uses_name_from_packet_only = 0;
1.25 markus 168: if (options->rsa_authentication == -1)
169: options->rsa_authentication = 1;
1.54 markus 170: if (options->pubkey_authentication == -1)
171: options->pubkey_authentication = 1;
1.1 deraadt 172: #ifdef KRB4
1.25 markus 173: if (options->kerberos_authentication == -1)
174: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
175: if (options->kerberos_or_local_passwd == -1)
176: options->kerberos_or_local_passwd = 1;
177: if (options->kerberos_ticket_cleanup == -1)
178: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 179: #endif /* KRB4 */
180: #ifdef AFS
1.25 markus 181: if (options->kerberos_tgt_passing == -1)
182: options->kerberos_tgt_passing = 0;
183: if (options->afs_token_passing == -1)
184: options->afs_token_passing = k_hasafs();
1.4 dugsong 185: #endif /* AFS */
1.25 markus 186: if (options->password_authentication == -1)
187: options->password_authentication = 1;
1.52 markus 188: if (options->kbd_interactive_authentication == -1)
189: options->kbd_interactive_authentication = 0;
1.80 markus 190: if (options->challenge_response_authentication == -1)
191: options->challenge_response_authentication = 1;
1.25 markus 192: if (options->permit_empty_passwd == -1)
1.30 markus 193: options->permit_empty_passwd = 0;
1.25 markus 194: if (options->use_login == -1)
195: options->use_login = 0;
1.53 markus 196: if (options->allow_tcp_forwarding == -1)
197: options->allow_tcp_forwarding = 1;
1.38 markus 198: if (options->gateway_ports == -1)
199: options->gateway_ports = 0;
1.46 markus 200: if (options->max_startups == -1)
201: options->max_startups = 10;
1.50 markus 202: if (options->max_startups_rate == -1)
203: options->max_startups_rate = 100; /* 100% */
204: if (options->max_startups_begin == -1)
205: options->max_startups_begin = options->max_startups;
1.64 markus 206: if (options->reverse_mapping_check == -1)
207: options->reverse_mapping_check = 0;
1.77 beck 208: if (options->client_alive_interval == -1)
209: options->client_alive_interval = 0;
210: if (options->client_alive_count_max == -1)
211: options->client_alive_count_max = 3;
1.82 markus 212: if (options->authorized_keys_file == NULL)
213: options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS;
214: if (options->authorized_keys_file2 == NULL)
215: options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2;
1.1 deraadt 216: }
217:
218: /* Keyword tokens. */
1.25 markus 219: typedef enum {
220: sBadOption, /* == unknown option */
221: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
222: sPermitRootLogin, sLogFacility, sLogLevel,
223: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 224: #ifdef KRB4
1.25 markus 225: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 226: #endif
227: #ifdef AFS
1.25 markus 228: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 229: #endif
1.63 markus 230: sChallengeResponseAuthentication,
1.52 markus 231: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.72 stevesk 232: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
233: sX11Forwarding, sX11DisplayOffset,
1.69 stevesk 234: sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail,
1.53 markus 235: sUseLogin, sAllowTcpForwarding,
236: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 237: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.54 markus 238: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.75 markus 239: sBanner, sReverseMappingCheck, sHostbasedAuthentication,
1.77 beck 240: sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
1.82 markus 241: sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2
1.1 deraadt 242: } ServerOpCodes;
243:
244: /* Textual representation of the tokens. */
1.25 markus 245: static struct {
246: const char *name;
247: ServerOpCodes opcode;
248: } keywords[] = {
249: { "port", sPort },
250: { "hostkey", sHostKeyFile },
1.54 markus 251: { "hostdsakey", sHostKeyFile }, /* alias */
1.65 stevesk 252: { "pidfile", sPidFile },
1.25 markus 253: { "serverkeybits", sServerKeyBits },
254: { "logingracetime", sLoginGraceTime },
255: { "keyregenerationinterval", sKeyRegenerationTime },
256: { "permitrootlogin", sPermitRootLogin },
257: { "syslogfacility", sLogFacility },
258: { "loglevel", sLogLevel },
259: { "rhostsauthentication", sRhostsAuthentication },
260: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
1.75 markus 261: { "hostbasedauthentication", sHostbasedAuthentication },
262: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly },
1.25 markus 263: { "rsaauthentication", sRSAAuthentication },
1.54 markus 264: { "pubkeyauthentication", sPubkeyAuthentication },
265: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 266: #ifdef KRB4
1.25 markus 267: { "kerberosauthentication", sKerberosAuthentication },
268: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
269: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 270: #endif
1.4 dugsong 271: #ifdef AFS
1.25 markus 272: { "kerberostgtpassing", sKerberosTgtPassing },
273: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 274: #endif
1.25 markus 275: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 276: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.63 markus 277: { "challengeresponseauthentication", sChallengeResponseAuthentication },
278: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.25 markus 279: { "checkmail", sCheckMail },
280: { "listenaddress", sListenAddress },
281: { "printmotd", sPrintMotd },
1.72 stevesk 282: { "printlastlog", sPrintLastLog },
1.25 markus 283: { "ignorerhosts", sIgnoreRhosts },
284: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
285: { "x11forwarding", sX11Forwarding },
286: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 287: { "xauthlocation", sXAuthLocation },
1.25 markus 288: { "strictmodes", sStrictModes },
289: { "permitemptypasswords", sEmptyPasswd },
290: { "uselogin", sUseLogin },
291: { "keepalive", sKeepAlives },
1.53 markus 292: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 293: { "allowusers", sAllowUsers },
294: { "denyusers", sDenyUsers },
295: { "allowgroups", sAllowGroups },
296: { "denygroups", sDenyGroups },
1.33 markus 297: { "ciphers", sCiphers },
1.66 markus 298: { "macs", sMacs },
1.33 markus 299: { "protocol", sProtocol },
1.38 markus 300: { "gatewayports", sGatewayPorts },
1.43 jakob 301: { "subsystem", sSubsystem },
1.46 markus 302: { "maxstartups", sMaxStartups },
1.57 markus 303: { "banner", sBanner },
1.64 markus 304: { "reversemappingcheck", sReverseMappingCheck },
1.77 beck 305: { "clientaliveinterval", sClientAliveInterval },
306: { "clientalivecountmax", sClientAliveCountMax },
1.82 markus 307: { "authorizedkeysfile", sAuthorizedKeysFile },
308: { "authorizedkeysfile2", sAuthorizedKeysFile2 },
1.25 markus 309: { NULL, 0 }
1.1 deraadt 310: };
311:
1.27 markus 312: /*
1.73 stevesk 313: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 314: */
1.1 deraadt 315:
1.34 markus 316: static ServerOpCodes
1.25 markus 317: parse_token(const char *cp, const char *filename,
318: int linenum)
1.1 deraadt 319: {
1.55 markus 320: u_int i;
1.1 deraadt 321:
1.25 markus 322: for (i = 0; keywords[i].name; i++)
1.28 markus 323: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 324: return keywords[i].opcode;
325:
1.78 stevesk 326: error("%s: line %d: Bad configuration option: %s",
327: filename, linenum, cp);
1.25 markus 328: return sBadOption;
1.1 deraadt 329: }
330:
1.34 markus 331: void
1.76 stevesk 332: add_listen_addr(ServerOptions *options, char *addr, u_short port)
1.74 stevesk 333: {
334: int i;
335:
336: if (options->num_ports == 0)
337: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.76 stevesk 338: if (port == 0)
1.74 stevesk 339: for (i = 0; i < options->num_ports; i++)
340: add_one_listen_addr(options, addr, options->ports[i]);
341: else
1.76 stevesk 342: add_one_listen_addr(options, addr, port);
1.74 stevesk 343: }
344:
345: void
346: add_one_listen_addr(ServerOptions *options, char *addr, u_short port)
1.29 markus 347: {
348: struct addrinfo hints, *ai, *aitop;
349: char strport[NI_MAXSERV];
350: int gaierr;
351:
1.74 stevesk 352: memset(&hints, 0, sizeof(hints));
353: hints.ai_family = IPv4or6;
354: hints.ai_socktype = SOCK_STREAM;
355: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
356: snprintf(strport, sizeof strport, "%d", port);
357: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
358: fatal("bad addr or host: %s (%s)",
359: addr ? addr : "<NULL>",
360: gai_strerror(gaierr));
361: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
362: ;
363: ai->ai_next = options->listen_addrs;
364: options->listen_addrs = aitop;
1.29 markus 365: }
366:
1.1 deraadt 367: /* Reads the server configuration file. */
368:
1.34 markus 369: void
1.25 markus 370: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 371: {
1.25 markus 372: FILE *f;
373: char line[1024];
1.74 stevesk 374: char *cp, **charptr, *arg, *p;
1.25 markus 375: int linenum, *intptr, value;
376: int bad_options = 0;
377: ServerOpCodes opcode;
1.43 jakob 378: int i;
1.25 markus 379:
380: f = fopen(filename, "r");
381: if (!f) {
382: perror(filename);
1.1 deraadt 383: exit(1);
1.25 markus 384: }
385: linenum = 0;
386: while (fgets(line, sizeof(line), f)) {
387: linenum++;
1.48 provos 388: cp = line;
389: arg = strdelim(&cp);
390: /* Ignore leading whitespace */
391: if (*arg == '\0')
1.49 markus 392: arg = strdelim(&cp);
1.61 djm 393: if (!arg || !*arg || *arg == '#')
1.25 markus 394: continue;
1.54 markus 395: intptr = NULL;
396: charptr = NULL;
1.47 ho 397: opcode = parse_token(arg, filename, linenum);
1.25 markus 398: switch (opcode) {
399: case sBadOption:
400: bad_options++;
401: continue;
402: case sPort:
1.29 markus 403: /* ignore ports from configfile if cmdline specifies ports */
404: if (options->ports_from_cmdline)
405: continue;
406: if (options->listen_addrs != NULL)
407: fatal("%s line %d: ports must be specified before "
1.79 stevesk 408: "ListenAdress.", filename, linenum);
1.29 markus 409: if (options->num_ports >= MAX_PORTS)
1.70 millert 410: fatal("%s line %d: too many ports.",
1.34 markus 411: filename, linenum);
1.48 provos 412: arg = strdelim(&cp);
1.47 ho 413: if (!arg || *arg == '\0')
1.70 millert 414: fatal("%s line %d: missing port number.",
1.29 markus 415: filename, linenum);
1.76 stevesk 416: options->ports[options->num_ports++] = a2port(arg);
417: if (options->ports[options->num_ports-1] == 0)
418: fatal("%s line %d: Badly formatted port number.",
419: filename, linenum);
1.29 markus 420: break;
421:
422: case sServerKeyBits:
423: intptr = &options->server_key_bits;
1.25 markus 424: parse_int:
1.48 provos 425: arg = strdelim(&cp);
1.78 stevesk 426: if (!arg || *arg == '\0')
427: fatal("%s line %d: missing integer value.",
428: filename, linenum);
1.47 ho 429: value = atoi(arg);
1.25 markus 430: if (*intptr == -1)
431: *intptr = value;
432: break;
433:
434: case sLoginGraceTime:
435: intptr = &options->login_grace_time;
1.81 stevesk 436: parse_time:
437: arg = strdelim(&cp);
438: if (!arg || *arg == '\0')
439: fatal("%s line %d: missing time value.",
440: filename, linenum);
441: if ((value = convtime(arg)) == -1)
442: fatal("%s line %d: invalid time value.",
443: filename, linenum);
444: if (*intptr == -1)
445: *intptr = value;
446: break;
1.25 markus 447:
448: case sKeyRegenerationTime:
449: intptr = &options->key_regeneration_time;
1.81 stevesk 450: goto parse_time;
1.25 markus 451:
452: case sListenAddress:
1.48 provos 453: arg = strdelim(&cp);
1.74 stevesk 454: if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
1.70 millert 455: fatal("%s line %d: missing inet addr.",
1.29 markus 456: filename, linenum);
1.74 stevesk 457: if (*arg == '[') {
458: if ((p = strchr(arg, ']')) == NULL)
459: fatal("%s line %d: bad ipv6 inet addr usage.",
460: filename, linenum);
461: arg++;
462: memmove(p, p+1, strlen(p+1)+1);
463: } else if (((p = strchr(arg, ':')) == NULL) ||
464: (strchr(p+1, ':') != NULL)) {
1.76 stevesk 465: add_listen_addr(options, arg, 0);
1.74 stevesk 466: break;
467: }
468: if (*p == ':') {
1.76 stevesk 469: u_short port;
470:
1.74 stevesk 471: p++;
472: if (*p == '\0')
473: fatal("%s line %d: bad inet addr:port usage.",
474: filename, linenum);
475: else {
476: *(p-1) = '\0';
1.76 stevesk 477: if ((port = a2port(p)) == 0)
478: fatal("%s line %d: bad port number.",
479: filename, linenum);
480: add_listen_addr(options, arg, port);
1.74 stevesk 481: }
482: } else if (*p == '\0')
1.76 stevesk 483: add_listen_addr(options, arg, 0);
1.74 stevesk 484: else
485: fatal("%s line %d: bad inet addr usage.",
486: filename, linenum);
1.25 markus 487: break;
488:
489: case sHostKeyFile:
1.54 markus 490: intptr = &options->num_host_key_files;
1.78 stevesk 491: if (*intptr >= MAX_HOSTKEYS)
492: fatal("%s line %d: too many host keys specified (max %d).",
1.54 markus 493: filename, linenum, MAX_HOSTKEYS);
494: charptr = &options->host_key_files[*intptr];
1.42 markus 495: parse_filename:
1.48 provos 496: arg = strdelim(&cp);
1.78 stevesk 497: if (!arg || *arg == '\0')
498: fatal("%s line %d: missing file name.",
1.36 markus 499: filename, linenum);
1.54 markus 500: if (*charptr == NULL) {
1.47 ho 501: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 502: /* increase optional counter */
503: if (intptr != NULL)
504: *intptr = *intptr + 1;
505: }
1.36 markus 506: break;
507:
508: case sPidFile:
509: charptr = &options->pid_file;
1.42 markus 510: goto parse_filename;
1.25 markus 511:
512: case sPermitRootLogin:
513: intptr = &options->permit_root_login;
1.48 provos 514: arg = strdelim(&cp);
1.78 stevesk 515: if (!arg || *arg == '\0')
516: fatal("%s line %d: missing yes/"
1.71 stevesk 517: "without-password/forced-commands-only/no "
1.78 stevesk 518: "argument.", filename, linenum);
519: value = 0; /* silence compiler */
1.47 ho 520: if (strcmp(arg, "without-password") == 0)
1.67 markus 521: value = PERMIT_NO_PASSWD;
522: else if (strcmp(arg, "forced-commands-only") == 0)
523: value = PERMIT_FORCED_ONLY;
1.47 ho 524: else if (strcmp(arg, "yes") == 0)
1.67 markus 525: value = PERMIT_YES;
1.47 ho 526: else if (strcmp(arg, "no") == 0)
1.67 markus 527: value = PERMIT_NO;
1.78 stevesk 528: else
529: fatal("%s line %d: Bad yes/"
1.67 markus 530: "without-password/forced-commands-only/no "
1.78 stevesk 531: "argument: %s", filename, linenum, arg);
1.25 markus 532: if (*intptr == -1)
533: *intptr = value;
534: break;
535:
536: case sIgnoreRhosts:
537: intptr = &options->ignore_rhosts;
538: parse_flag:
1.48 provos 539: arg = strdelim(&cp);
1.78 stevesk 540: if (!arg || *arg == '\0')
541: fatal("%s line %d: missing yes/no argument.",
542: filename, linenum);
543: value = 0; /* silence compiler */
1.47 ho 544: if (strcmp(arg, "yes") == 0)
1.25 markus 545: value = 1;
1.47 ho 546: else if (strcmp(arg, "no") == 0)
1.25 markus 547: value = 0;
1.78 stevesk 548: else
549: fatal("%s line %d: Bad yes/no argument: %s",
1.47 ho 550: filename, linenum, arg);
1.25 markus 551: if (*intptr == -1)
552: *intptr = value;
553: break;
554:
555: case sIgnoreUserKnownHosts:
556: intptr = &options->ignore_user_known_hosts;
1.31 markus 557: goto parse_flag;
1.25 markus 558:
559: case sRhostsAuthentication:
560: intptr = &options->rhosts_authentication;
561: goto parse_flag;
562:
563: case sRhostsRSAAuthentication:
564: intptr = &options->rhosts_rsa_authentication;
1.75 markus 565: goto parse_flag;
566:
567: case sHostbasedAuthentication:
568: intptr = &options->hostbased_authentication;
569: goto parse_flag;
570:
571: case sHostbasedUsesNameFromPacketOnly:
572: intptr = &options->hostbased_uses_name_from_packet_only;
1.25 markus 573: goto parse_flag;
574:
575: case sRSAAuthentication:
576: intptr = &options->rsa_authentication;
1.39 markus 577: goto parse_flag;
578:
1.54 markus 579: case sPubkeyAuthentication:
580: intptr = &options->pubkey_authentication;
1.25 markus 581: goto parse_flag;
582:
1.1 deraadt 583: #ifdef KRB4
1.25 markus 584: case sKerberosAuthentication:
585: intptr = &options->kerberos_authentication;
586: goto parse_flag;
587:
588: case sKerberosOrLocalPasswd:
589: intptr = &options->kerberos_or_local_passwd;
590: goto parse_flag;
591:
592: case sKerberosTicketCleanup:
593: intptr = &options->kerberos_ticket_cleanup;
594: goto parse_flag;
1.1 deraadt 595: #endif
1.25 markus 596:
1.4 dugsong 597: #ifdef AFS
1.25 markus 598: case sKerberosTgtPassing:
599: intptr = &options->kerberos_tgt_passing;
600: goto parse_flag;
601:
602: case sAFSTokenPassing:
603: intptr = &options->afs_token_passing;
604: goto parse_flag;
605: #endif
606:
607: case sPasswordAuthentication:
608: intptr = &options->password_authentication;
1.52 markus 609: goto parse_flag;
610:
611: case sKbdInteractiveAuthentication:
612: intptr = &options->kbd_interactive_authentication;
1.25 markus 613: goto parse_flag;
614:
615: case sCheckMail:
616: intptr = &options->check_mail;
617: goto parse_flag;
1.10 markus 618:
1.63 markus 619: case sChallengeResponseAuthentication:
1.80 markus 620: intptr = &options->challenge_response_authentication;
1.25 markus 621: goto parse_flag;
622:
623: case sPrintMotd:
624: intptr = &options->print_motd;
1.72 stevesk 625: goto parse_flag;
626:
627: case sPrintLastLog:
628: intptr = &options->print_lastlog;
1.25 markus 629: goto parse_flag;
630:
631: case sX11Forwarding:
632: intptr = &options->x11_forwarding;
633: goto parse_flag;
634:
635: case sX11DisplayOffset:
636: intptr = &options->x11_display_offset;
637: goto parse_int;
638:
1.42 markus 639: case sXAuthLocation:
640: charptr = &options->xauth_location;
641: goto parse_filename;
1.65 stevesk 642:
1.25 markus 643: case sStrictModes:
644: intptr = &options->strict_modes;
645: goto parse_flag;
646:
647: case sKeepAlives:
648: intptr = &options->keepalives;
649: goto parse_flag;
650:
651: case sEmptyPasswd:
652: intptr = &options->permit_empty_passwd;
653: goto parse_flag;
654:
655: case sUseLogin:
656: intptr = &options->use_login;
1.38 markus 657: goto parse_flag;
658:
659: case sGatewayPorts:
660: intptr = &options->gateway_ports;
1.64 markus 661: goto parse_flag;
662:
663: case sReverseMappingCheck:
664: intptr = &options->reverse_mapping_check;
1.25 markus 665: goto parse_flag;
666:
667: case sLogFacility:
668: intptr = (int *) &options->log_facility;
1.48 provos 669: arg = strdelim(&cp);
1.47 ho 670: value = log_facility_number(arg);
1.25 markus 671: if (value == (SyslogFacility) - 1)
1.70 millert 672: fatal("%.200s line %d: unsupported log facility '%s'",
1.47 ho 673: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 674: if (*intptr == -1)
675: *intptr = (SyslogFacility) value;
676: break;
677:
678: case sLogLevel:
679: intptr = (int *) &options->log_level;
1.48 provos 680: arg = strdelim(&cp);
1.47 ho 681: value = log_level_number(arg);
1.25 markus 682: if (value == (LogLevel) - 1)
1.70 millert 683: fatal("%.200s line %d: unsupported log level '%s'",
1.47 ho 684: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 685: if (*intptr == -1)
686: *intptr = (LogLevel) value;
687: break;
1.53 markus 688:
689: case sAllowTcpForwarding:
690: intptr = &options->allow_tcp_forwarding;
691: goto parse_flag;
1.25 markus 692:
693: case sAllowUsers:
1.48 provos 694: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 695: if (options->num_allow_users >= MAX_ALLOW_USERS)
1.70 millert 696: fatal("%s line %d: too many allow users.",
1.33 markus 697: filename, linenum);
1.47 ho 698: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 699: }
700: break;
701:
702: case sDenyUsers:
1.48 provos 703: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 704: if (options->num_deny_users >= MAX_DENY_USERS)
1.70 millert 705: fatal( "%s line %d: too many deny users.",
1.33 markus 706: filename, linenum);
1.47 ho 707: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 708: }
709: break;
710:
711: case sAllowGroups:
1.48 provos 712: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 713: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1.70 millert 714: fatal("%s line %d: too many allow groups.",
1.33 markus 715: filename, linenum);
1.47 ho 716: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 717: }
718: break;
719:
720: case sDenyGroups:
1.48 provos 721: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 722: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1.70 millert 723: fatal("%s line %d: too many deny groups.",
1.33 markus 724: filename, linenum);
1.47 ho 725: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 726: }
1.33 markus 727: break;
728:
729: case sCiphers:
1.48 provos 730: arg = strdelim(&cp);
1.47 ho 731: if (!arg || *arg == '\0')
1.41 markus 732: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 733: if (!ciphers_valid(arg))
1.40 markus 734: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 735: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 736: if (options->ciphers == NULL)
1.47 ho 737: options->ciphers = xstrdup(arg);
1.66 markus 738: break;
739:
740: case sMacs:
741: arg = strdelim(&cp);
742: if (!arg || *arg == '\0')
743: fatal("%s line %d: Missing argument.", filename, linenum);
744: if (!mac_valid(arg))
745: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
746: filename, linenum, arg ? arg : "<NONE>");
747: if (options->macs == NULL)
748: options->macs = xstrdup(arg);
1.33 markus 749: break;
750:
751: case sProtocol:
752: intptr = &options->protocol;
1.48 provos 753: arg = strdelim(&cp);
1.47 ho 754: if (!arg || *arg == '\0')
1.41 markus 755: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 756: value = proto_spec(arg);
1.33 markus 757: if (value == SSH_PROTO_UNKNOWN)
758: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 759: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 760: if (*intptr == SSH_PROTO_UNKNOWN)
761: *intptr = value;
1.43 jakob 762: break;
763:
764: case sSubsystem:
765: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
766: fatal("%s line %d: too many subsystems defined.",
767: filename, linenum);
768: }
1.48 provos 769: arg = strdelim(&cp);
1.47 ho 770: if (!arg || *arg == '\0')
1.43 jakob 771: fatal("%s line %d: Missing subsystem name.",
772: filename, linenum);
773: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 774: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 775: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 776: filename, linenum, arg);
777: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 778: arg = strdelim(&cp);
1.47 ho 779: if (!arg || *arg == '\0')
1.43 jakob 780: fatal("%s line %d: Missing subsystem command.",
781: filename, linenum);
1.47 ho 782: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 783: options->num_subsystems++;
1.25 markus 784: break;
1.46 markus 785:
786: case sMaxStartups:
1.50 markus 787: arg = strdelim(&cp);
788: if (!arg || *arg == '\0')
789: fatal("%s line %d: Missing MaxStartups spec.",
790: filename, linenum);
791: if (sscanf(arg, "%d:%d:%d",
792: &options->max_startups_begin,
793: &options->max_startups_rate,
794: &options->max_startups) == 3) {
795: if (options->max_startups_begin >
796: options->max_startups ||
797: options->max_startups_rate > 100 ||
798: options->max_startups_rate < 1)
799: fatal("%s line %d: Illegal MaxStartups spec.",
800: filename, linenum);
801: break;
802: }
1.46 markus 803: intptr = &options->max_startups;
804: goto parse_int;
1.25 markus 805:
1.57 markus 806: case sBanner:
807: charptr = &options->banner;
1.82 markus 808: goto parse_filename;
809: /*
810: * These options can contain %X options expanded at
811: * connect time, so that you can specify paths like:
812: *
813: * AuthorizedKeysFile /etc/ssh_keys/%u
814: */
815: case sAuthorizedKeysFile:
816: case sAuthorizedKeysFile2:
817: charptr = (opcode == sAuthorizedKeysFile ) ?
818: &options->authorized_keys_file :
819: &options->authorized_keys_file2;
1.57 markus 820: goto parse_filename;
1.81 stevesk 821:
1.77 beck 822: case sClientAliveInterval:
823: intptr = &options->client_alive_interval;
1.81 stevesk 824: goto parse_time;
825:
1.77 beck 826: case sClientAliveCountMax:
827: intptr = &options->client_alive_count_max;
828: goto parse_int;
1.81 stevesk 829:
1.25 markus 830: default:
1.78 stevesk 831: fatal("%s line %d: Missing handler for opcode %s (%d)",
832: filename, linenum, arg, opcode);
1.13 markus 833: }
1.78 stevesk 834: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
835: fatal("%s line %d: garbage at end of line; \"%.200s\".",
836: filename, linenum, arg);
1.1 deraadt 837: }
1.25 markus 838: fclose(f);
1.78 stevesk 839: if (bad_options > 0)
840: fatal("%s: terminating, %d bad configuration options",
841: filename, bad_options);
1.1 deraadt 842: }
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