Annotation of src/usr.bin/ssh/servconf.c, Revision 1.68
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"
1.68 ! deraadt 13: RCSID("$OpenBSD: servconf.c,v 1.67 2001/02/12 16:16:23 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:
1.29 markus 34: /* add listen address */
35: void add_listen_addr(ServerOptions *options, char *addr);
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;
58: options->check_mail = -1;
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;
68: options->rsa_authentication = -1;
1.54 markus 69: options->pubkey_authentication = -1;
1.1 deraadt 70: #ifdef KRB4
1.25 markus 71: options->kerberos_authentication = -1;
72: options->kerberos_or_local_passwd = -1;
73: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 74: #endif
1.4 dugsong 75: #ifdef AFS
1.25 markus 76: options->kerberos_tgt_passing = -1;
77: options->afs_token_passing = -1;
1.1 deraadt 78: #endif
1.25 markus 79: options->password_authentication = -1;
1.52 markus 80: options->kbd_interactive_authentication = -1;
1.63 markus 81: options->challenge_reponse_authentication = -1;
1.25 markus 82: options->permit_empty_passwd = -1;
83: options->use_login = -1;
1.53 markus 84: options->allow_tcp_forwarding = -1;
1.25 markus 85: options->num_allow_users = 0;
86: options->num_deny_users = 0;
87: options->num_allow_groups = 0;
88: options->num_deny_groups = 0;
1.33 markus 89: options->ciphers = NULL;
1.66 markus 90: options->macs = NULL;
1.33 markus 91: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 92: options->gateway_ports = -1;
1.43 jakob 93: options->num_subsystems = 0;
1.50 markus 94: options->max_startups_begin = -1;
95: options->max_startups_rate = -1;
1.46 markus 96: options->max_startups = -1;
1.57 markus 97: options->banner = NULL;
1.64 markus 98: options->reverse_mapping_check = -1;
1.1 deraadt 99: }
100:
1.34 markus 101: void
1.25 markus 102: fill_default_server_options(ServerOptions *options)
1.1 deraadt 103: {
1.54 markus 104: if (options->protocol == SSH_PROTO_UNKNOWN)
105: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
106: if (options->num_host_key_files == 0) {
107: /* fill default hostkeys for protocols */
108: if (options->protocol & SSH_PROTO_1)
1.60 markus 109: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 110: if (options->protocol & SSH_PROTO_2)
1.60 markus 111: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 112: }
1.29 markus 113: if (options->num_ports == 0)
114: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
115: if (options->listen_addrs == NULL)
116: add_listen_addr(options, NULL);
1.36 markus 117: if (options->pid_file == NULL)
1.60 markus 118: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 119: if (options->server_key_bits == -1)
120: options->server_key_bits = 768;
121: if (options->login_grace_time == -1)
122: options->login_grace_time = 600;
123: if (options->key_regeneration_time == -1)
124: options->key_regeneration_time = 3600;
1.67 markus 125: if (options->permit_root_login == PERMIT_NOT_SET)
126: options->permit_root_login = PERMIT_YES;
1.25 markus 127: if (options->ignore_rhosts == -1)
1.30 markus 128: options->ignore_rhosts = 1;
1.25 markus 129: if (options->ignore_user_known_hosts == -1)
130: options->ignore_user_known_hosts = 0;
131: if (options->check_mail == -1)
132: options->check_mail = 0;
133: if (options->print_motd == -1)
134: options->print_motd = 1;
135: if (options->x11_forwarding == -1)
1.30 markus 136: options->x11_forwarding = 0;
1.25 markus 137: if (options->x11_display_offset == -1)
1.30 markus 138: options->x11_display_offset = 10;
1.42 markus 139: #ifdef XAUTH_PATH
140: if (options->xauth_location == NULL)
141: options->xauth_location = XAUTH_PATH;
142: #endif /* XAUTH_PATH */
1.25 markus 143: if (options->strict_modes == -1)
144: options->strict_modes = 1;
145: if (options->keepalives == -1)
146: options->keepalives = 1;
147: if (options->log_facility == (SyslogFacility) (-1))
148: options->log_facility = SYSLOG_FACILITY_AUTH;
149: if (options->log_level == (LogLevel) (-1))
1.58 markus 150: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 151: if (options->rhosts_authentication == -1)
152: options->rhosts_authentication = 0;
153: if (options->rhosts_rsa_authentication == -1)
1.30 markus 154: options->rhosts_rsa_authentication = 0;
1.25 markus 155: if (options->rsa_authentication == -1)
156: options->rsa_authentication = 1;
1.54 markus 157: if (options->pubkey_authentication == -1)
158: options->pubkey_authentication = 1;
1.1 deraadt 159: #ifdef KRB4
1.25 markus 160: if (options->kerberos_authentication == -1)
161: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
162: if (options->kerberos_or_local_passwd == -1)
163: options->kerberos_or_local_passwd = 1;
164: if (options->kerberos_ticket_cleanup == -1)
165: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 166: #endif /* KRB4 */
167: #ifdef AFS
1.25 markus 168: if (options->kerberos_tgt_passing == -1)
169: options->kerberos_tgt_passing = 0;
170: if (options->afs_token_passing == -1)
171: options->afs_token_passing = k_hasafs();
1.4 dugsong 172: #endif /* AFS */
1.25 markus 173: if (options->password_authentication == -1)
174: options->password_authentication = 1;
1.52 markus 175: if (options->kbd_interactive_authentication == -1)
176: options->kbd_interactive_authentication = 0;
1.63 markus 177: if (options->challenge_reponse_authentication == -1)
178: options->challenge_reponse_authentication = 1;
1.25 markus 179: if (options->permit_empty_passwd == -1)
1.30 markus 180: options->permit_empty_passwd = 0;
1.25 markus 181: if (options->use_login == -1)
182: options->use_login = 0;
1.53 markus 183: if (options->allow_tcp_forwarding == -1)
184: options->allow_tcp_forwarding = 1;
1.38 markus 185: if (options->gateway_ports == -1)
186: options->gateway_ports = 0;
1.46 markus 187: if (options->max_startups == -1)
188: options->max_startups = 10;
1.50 markus 189: if (options->max_startups_rate == -1)
190: options->max_startups_rate = 100; /* 100% */
191: if (options->max_startups_begin == -1)
192: options->max_startups_begin = options->max_startups;
1.64 markus 193: if (options->reverse_mapping_check == -1)
194: options->reverse_mapping_check = 0;
1.1 deraadt 195: }
196:
197: /* Keyword tokens. */
1.25 markus 198: typedef enum {
199: sBadOption, /* == unknown option */
200: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
201: sPermitRootLogin, sLogFacility, sLogLevel,
202: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 203: #ifdef KRB4
1.25 markus 204: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 205: #endif
206: #ifdef AFS
1.25 markus 207: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 208: #endif
1.63 markus 209: sChallengeResponseAuthentication,
1.52 markus 210: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.25 markus 211: sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset,
212: sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail,
1.53 markus 213: sUseLogin, sAllowTcpForwarding,
214: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 215: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.54 markus 216: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.64 markus 217: sBanner, sReverseMappingCheck
1.1 deraadt 218: } ServerOpCodes;
219:
220: /* Textual representation of the tokens. */
1.25 markus 221: static struct {
222: const char *name;
223: ServerOpCodes opcode;
224: } keywords[] = {
225: { "port", sPort },
226: { "hostkey", sHostKeyFile },
1.54 markus 227: { "hostdsakey", sHostKeyFile }, /* alias */
1.65 stevesk 228: { "pidfile", sPidFile },
1.25 markus 229: { "serverkeybits", sServerKeyBits },
230: { "logingracetime", sLoginGraceTime },
231: { "keyregenerationinterval", sKeyRegenerationTime },
232: { "permitrootlogin", sPermitRootLogin },
233: { "syslogfacility", sLogFacility },
234: { "loglevel", sLogLevel },
235: { "rhostsauthentication", sRhostsAuthentication },
236: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
237: { "rsaauthentication", sRSAAuthentication },
1.54 markus 238: { "pubkeyauthentication", sPubkeyAuthentication },
239: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 240: #ifdef KRB4
1.25 markus 241: { "kerberosauthentication", sKerberosAuthentication },
242: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
243: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 244: #endif
1.4 dugsong 245: #ifdef AFS
1.25 markus 246: { "kerberostgtpassing", sKerberosTgtPassing },
247: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 248: #endif
1.25 markus 249: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 250: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.63 markus 251: { "challengeresponseauthentication", sChallengeResponseAuthentication },
252: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.25 markus 253: { "checkmail", sCheckMail },
254: { "listenaddress", sListenAddress },
255: { "printmotd", sPrintMotd },
256: { "ignorerhosts", sIgnoreRhosts },
257: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
258: { "x11forwarding", sX11Forwarding },
259: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 260: { "xauthlocation", sXAuthLocation },
1.25 markus 261: { "strictmodes", sStrictModes },
262: { "permitemptypasswords", sEmptyPasswd },
263: { "uselogin", sUseLogin },
264: { "randomseed", sRandomSeedFile },
265: { "keepalive", sKeepAlives },
1.53 markus 266: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 267: { "allowusers", sAllowUsers },
268: { "denyusers", sDenyUsers },
269: { "allowgroups", sAllowGroups },
270: { "denygroups", sDenyGroups },
1.33 markus 271: { "ciphers", sCiphers },
1.66 markus 272: { "macs", sMacs },
1.33 markus 273: { "protocol", sProtocol },
1.38 markus 274: { "gatewayports", sGatewayPorts },
1.43 jakob 275: { "subsystem", sSubsystem },
1.46 markus 276: { "maxstartups", sMaxStartups },
1.57 markus 277: { "banner", sBanner },
1.64 markus 278: { "reversemappingcheck", sReverseMappingCheck },
1.25 markus 279: { NULL, 0 }
1.1 deraadt 280: };
281:
1.27 markus 282: /*
283: * Returns the number of the token pointed to by cp of length len. Never
284: * returns if the token is not known.
285: */
1.1 deraadt 286:
1.34 markus 287: static ServerOpCodes
1.25 markus 288: parse_token(const char *cp, const char *filename,
289: int linenum)
1.1 deraadt 290: {
1.55 markus 291: u_int i;
1.1 deraadt 292:
1.25 markus 293: for (i = 0; keywords[i].name; i++)
1.28 markus 294: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 295: return keywords[i].opcode;
296:
297: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
298: filename, linenum, cp);
299: return sBadOption;
1.1 deraadt 300: }
301:
1.29 markus 302: /*
303: * add listen address
304: */
1.34 markus 305: void
1.29 markus 306: add_listen_addr(ServerOptions *options, char *addr)
307: {
308: struct addrinfo hints, *ai, *aitop;
309: char strport[NI_MAXSERV];
310: int gaierr;
311: int i;
312:
313: if (options->num_ports == 0)
314: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
315: for (i = 0; i < options->num_ports; i++) {
316: memset(&hints, 0, sizeof(hints));
317: hints.ai_family = IPv4or6;
318: hints.ai_socktype = SOCK_STREAM;
319: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
320: snprintf(strport, sizeof strport, "%d", options->ports[i]);
321: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
322: fatal("bad addr or host: %s (%s)\n",
323: addr ? addr : "<NULL>",
324: gai_strerror(gaierr));
325: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
326: ;
327: ai->ai_next = options->listen_addrs;
328: options->listen_addrs = aitop;
329: }
330: }
331:
1.1 deraadt 332: /* Reads the server configuration file. */
333:
1.34 markus 334: void
1.25 markus 335: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 336: {
1.25 markus 337: FILE *f;
338: char line[1024];
1.47 ho 339: char *cp, **charptr, *arg;
1.25 markus 340: int linenum, *intptr, value;
341: int bad_options = 0;
342: ServerOpCodes opcode;
1.43 jakob 343: int i;
1.25 markus 344:
345: f = fopen(filename, "r");
346: if (!f) {
347: perror(filename);
1.1 deraadt 348: exit(1);
1.25 markus 349: }
350: linenum = 0;
351: while (fgets(line, sizeof(line), f)) {
352: linenum++;
1.48 provos 353: cp = line;
354: arg = strdelim(&cp);
355: /* Ignore leading whitespace */
356: if (*arg == '\0')
1.49 markus 357: arg = strdelim(&cp);
1.61 djm 358: if (!arg || !*arg || *arg == '#')
1.25 markus 359: continue;
1.54 markus 360: intptr = NULL;
361: charptr = NULL;
1.47 ho 362: opcode = parse_token(arg, filename, linenum);
1.25 markus 363: switch (opcode) {
364: case sBadOption:
365: bad_options++;
366: continue;
367: case sPort:
1.29 markus 368: /* ignore ports from configfile if cmdline specifies ports */
369: if (options->ports_from_cmdline)
370: continue;
371: if (options->listen_addrs != NULL)
372: fatal("%s line %d: ports must be specified before "
373: "ListenAdress.\n", filename, linenum);
374: if (options->num_ports >= MAX_PORTS)
375: fatal("%s line %d: too many ports.\n",
1.34 markus 376: filename, linenum);
1.48 provos 377: arg = strdelim(&cp);
1.47 ho 378: if (!arg || *arg == '\0')
1.29 markus 379: fatal("%s line %d: missing port number.\n",
380: filename, linenum);
1.47 ho 381: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 382: break;
383:
384: case sServerKeyBits:
385: intptr = &options->server_key_bits;
1.25 markus 386: parse_int:
1.48 provos 387: arg = strdelim(&cp);
1.47 ho 388: if (!arg || *arg == '\0') {
1.25 markus 389: fprintf(stderr, "%s line %d: missing integer value.\n",
390: filename, linenum);
391: exit(1);
392: }
1.47 ho 393: value = atoi(arg);
1.25 markus 394: if (*intptr == -1)
395: *intptr = value;
396: break;
397:
398: case sLoginGraceTime:
399: intptr = &options->login_grace_time;
400: goto parse_int;
401:
402: case sKeyRegenerationTime:
403: intptr = &options->key_regeneration_time;
404: goto parse_int;
405:
406: case sListenAddress:
1.48 provos 407: arg = strdelim(&cp);
1.47 ho 408: if (!arg || *arg == '\0')
1.29 markus 409: fatal("%s line %d: missing inet addr.\n",
410: filename, linenum);
1.47 ho 411: add_listen_addr(options, arg);
1.25 markus 412: break;
413:
414: case sHostKeyFile:
1.54 markus 415: intptr = &options->num_host_key_files;
416: if (*intptr >= MAX_HOSTKEYS) {
1.68 ! deraadt 417: fprintf(stderr,
! 418: "%s line %d: too many host keys specified (max %d).\n",
1.54 markus 419: filename, linenum, MAX_HOSTKEYS);
420: exit(1);
421: }
422: charptr = &options->host_key_files[*intptr];
1.42 markus 423: parse_filename:
1.48 provos 424: arg = strdelim(&cp);
1.47 ho 425: if (!arg || *arg == '\0') {
1.25 markus 426: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 427: filename, linenum);
428: exit(1);
429: }
1.54 markus 430: if (*charptr == NULL) {
1.47 ho 431: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 432: /* increase optional counter */
433: if (intptr != NULL)
434: *intptr = *intptr + 1;
435: }
1.36 markus 436: break;
437:
438: case sPidFile:
439: charptr = &options->pid_file;
1.42 markus 440: goto parse_filename;
1.25 markus 441:
442: case sRandomSeedFile:
443: fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n",
444: filename, linenum);
1.48 provos 445: arg = strdelim(&cp);
1.25 markus 446: break;
447:
448: case sPermitRootLogin:
449: intptr = &options->permit_root_login;
1.48 provos 450: arg = strdelim(&cp);
1.47 ho 451: if (!arg || *arg == '\0') {
1.25 markus 452: fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
453: filename, linenum);
454: exit(1);
455: }
1.47 ho 456: if (strcmp(arg, "without-password") == 0)
1.67 markus 457: value = PERMIT_NO_PASSWD;
458: else if (strcmp(arg, "forced-commands-only") == 0)
459: value = PERMIT_FORCED_ONLY;
1.47 ho 460: else if (strcmp(arg, "yes") == 0)
1.67 markus 461: value = PERMIT_YES;
1.47 ho 462: else if (strcmp(arg, "no") == 0)
1.67 markus 463: value = PERMIT_NO;
1.25 markus 464: else {
1.67 markus 465: fprintf(stderr, "%s line %d: Bad yes/"
466: "without-password/forced-commands-only/no "
467: "argument: %s\n", filename, linenum, arg);
1.25 markus 468: exit(1);
469: }
470: if (*intptr == -1)
471: *intptr = value;
472: break;
473:
474: case sIgnoreRhosts:
475: intptr = &options->ignore_rhosts;
476: parse_flag:
1.48 provos 477: arg = strdelim(&cp);
1.47 ho 478: if (!arg || *arg == '\0') {
1.25 markus 479: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
480: filename, linenum);
481: exit(1);
482: }
1.47 ho 483: if (strcmp(arg, "yes") == 0)
1.25 markus 484: value = 1;
1.47 ho 485: else if (strcmp(arg, "no") == 0)
1.25 markus 486: value = 0;
487: else {
488: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 489: filename, linenum, arg);
1.25 markus 490: exit(1);
491: }
492: if (*intptr == -1)
493: *intptr = value;
494: break;
495:
496: case sIgnoreUserKnownHosts:
497: intptr = &options->ignore_user_known_hosts;
1.31 markus 498: goto parse_flag;
1.25 markus 499:
500: case sRhostsAuthentication:
501: intptr = &options->rhosts_authentication;
502: goto parse_flag;
503:
504: case sRhostsRSAAuthentication:
505: intptr = &options->rhosts_rsa_authentication;
506: goto parse_flag;
507:
508: case sRSAAuthentication:
509: intptr = &options->rsa_authentication;
1.39 markus 510: goto parse_flag;
511:
1.54 markus 512: case sPubkeyAuthentication:
513: intptr = &options->pubkey_authentication;
1.25 markus 514: goto parse_flag;
515:
1.1 deraadt 516: #ifdef KRB4
1.25 markus 517: case sKerberosAuthentication:
518: intptr = &options->kerberos_authentication;
519: goto parse_flag;
520:
521: case sKerberosOrLocalPasswd:
522: intptr = &options->kerberos_or_local_passwd;
523: goto parse_flag;
524:
525: case sKerberosTicketCleanup:
526: intptr = &options->kerberos_ticket_cleanup;
527: goto parse_flag;
1.1 deraadt 528: #endif
1.25 markus 529:
1.4 dugsong 530: #ifdef AFS
1.25 markus 531: case sKerberosTgtPassing:
532: intptr = &options->kerberos_tgt_passing;
533: goto parse_flag;
534:
535: case sAFSTokenPassing:
536: intptr = &options->afs_token_passing;
537: goto parse_flag;
538: #endif
539:
540: case sPasswordAuthentication:
541: intptr = &options->password_authentication;
1.52 markus 542: goto parse_flag;
543:
544: case sKbdInteractiveAuthentication:
545: intptr = &options->kbd_interactive_authentication;
1.25 markus 546: goto parse_flag;
547:
548: case sCheckMail:
549: intptr = &options->check_mail;
550: goto parse_flag;
1.10 markus 551:
1.63 markus 552: case sChallengeResponseAuthentication:
553: intptr = &options->challenge_reponse_authentication;
1.25 markus 554: goto parse_flag;
555:
556: case sPrintMotd:
557: intptr = &options->print_motd;
558: goto parse_flag;
559:
560: case sX11Forwarding:
561: intptr = &options->x11_forwarding;
562: goto parse_flag;
563:
564: case sX11DisplayOffset:
565: intptr = &options->x11_display_offset;
566: goto parse_int;
567:
1.42 markus 568: case sXAuthLocation:
569: charptr = &options->xauth_location;
570: goto parse_filename;
1.65 stevesk 571:
1.25 markus 572: case sStrictModes:
573: intptr = &options->strict_modes;
574: goto parse_flag;
575:
576: case sKeepAlives:
577: intptr = &options->keepalives;
578: goto parse_flag;
579:
580: case sEmptyPasswd:
581: intptr = &options->permit_empty_passwd;
582: goto parse_flag;
583:
584: case sUseLogin:
585: intptr = &options->use_login;
1.38 markus 586: goto parse_flag;
587:
588: case sGatewayPorts:
589: intptr = &options->gateway_ports;
1.64 markus 590: goto parse_flag;
591:
592: case sReverseMappingCheck:
593: intptr = &options->reverse_mapping_check;
1.25 markus 594: goto parse_flag;
595:
596: case sLogFacility:
597: intptr = (int *) &options->log_facility;
1.48 provos 598: arg = strdelim(&cp);
1.47 ho 599: value = log_facility_number(arg);
1.25 markus 600: if (value == (SyslogFacility) - 1)
601: fatal("%.200s line %d: unsupported log facility '%s'\n",
1.47 ho 602: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 603: if (*intptr == -1)
604: *intptr = (SyslogFacility) value;
605: break;
606:
607: case sLogLevel:
608: intptr = (int *) &options->log_level;
1.48 provos 609: arg = strdelim(&cp);
1.47 ho 610: value = log_level_number(arg);
1.25 markus 611: if (value == (LogLevel) - 1)
612: fatal("%.200s line %d: unsupported log level '%s'\n",
1.47 ho 613: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 614: if (*intptr == -1)
615: *intptr = (LogLevel) value;
616: break;
1.53 markus 617:
618: case sAllowTcpForwarding:
619: intptr = &options->allow_tcp_forwarding;
620: goto parse_flag;
1.25 markus 621:
622: case sAllowUsers:
1.48 provos 623: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 624: if (options->num_allow_users >= MAX_ALLOW_USERS)
625: fatal("%s line %d: too many allow users.\n",
626: filename, linenum);
1.47 ho 627: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 628: }
629: break;
630:
631: case sDenyUsers:
1.48 provos 632: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 633: if (options->num_deny_users >= MAX_DENY_USERS)
634: fatal( "%s line %d: too many deny users.\n",
635: filename, linenum);
1.47 ho 636: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 637: }
638: break;
639:
640: case sAllowGroups:
1.48 provos 641: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 642: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
643: fatal("%s line %d: too many allow groups.\n",
644: filename, linenum);
1.47 ho 645: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 646: }
647: break;
648:
649: case sDenyGroups:
1.48 provos 650: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 651: if (options->num_deny_groups >= MAX_DENY_GROUPS)
652: fatal("%s line %d: too many deny groups.\n",
653: filename, linenum);
1.47 ho 654: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 655: }
1.33 markus 656: break;
657:
658: case sCiphers:
1.48 provos 659: arg = strdelim(&cp);
1.47 ho 660: if (!arg || *arg == '\0')
1.41 markus 661: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 662: if (!ciphers_valid(arg))
1.40 markus 663: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 664: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 665: if (options->ciphers == NULL)
1.47 ho 666: options->ciphers = xstrdup(arg);
1.66 markus 667: break;
668:
669: case sMacs:
670: arg = strdelim(&cp);
671: if (!arg || *arg == '\0')
672: fatal("%s line %d: Missing argument.", filename, linenum);
673: if (!mac_valid(arg))
674: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
675: filename, linenum, arg ? arg : "<NONE>");
676: if (options->macs == NULL)
677: options->macs = xstrdup(arg);
1.33 markus 678: break;
679:
680: case sProtocol:
681: intptr = &options->protocol;
1.48 provos 682: arg = strdelim(&cp);
1.47 ho 683: if (!arg || *arg == '\0')
1.41 markus 684: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 685: value = proto_spec(arg);
1.33 markus 686: if (value == SSH_PROTO_UNKNOWN)
687: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 688: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 689: if (*intptr == SSH_PROTO_UNKNOWN)
690: *intptr = value;
1.43 jakob 691: break;
692:
693: case sSubsystem:
694: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
695: fatal("%s line %d: too many subsystems defined.",
696: filename, linenum);
697: }
1.48 provos 698: arg = strdelim(&cp);
1.47 ho 699: if (!arg || *arg == '\0')
1.43 jakob 700: fatal("%s line %d: Missing subsystem name.",
701: filename, linenum);
702: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 703: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 704: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 705: filename, linenum, arg);
706: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 707: arg = strdelim(&cp);
1.47 ho 708: if (!arg || *arg == '\0')
1.43 jakob 709: fatal("%s line %d: Missing subsystem command.",
710: filename, linenum);
1.47 ho 711: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 712: options->num_subsystems++;
1.25 markus 713: break;
1.46 markus 714:
715: case sMaxStartups:
1.50 markus 716: arg = strdelim(&cp);
717: if (!arg || *arg == '\0')
718: fatal("%s line %d: Missing MaxStartups spec.",
719: filename, linenum);
720: if (sscanf(arg, "%d:%d:%d",
721: &options->max_startups_begin,
722: &options->max_startups_rate,
723: &options->max_startups) == 3) {
724: if (options->max_startups_begin >
725: options->max_startups ||
726: options->max_startups_rate > 100 ||
727: options->max_startups_rate < 1)
728: fatal("%s line %d: Illegal MaxStartups spec.",
729: filename, linenum);
730: break;
731: }
1.46 markus 732: intptr = &options->max_startups;
733: goto parse_int;
1.25 markus 734:
1.57 markus 735: case sBanner:
736: charptr = &options->banner;
737: goto parse_filename;
1.65 stevesk 738:
1.25 markus 739: default:
740: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 741: filename, linenum, arg, opcode);
1.25 markus 742: exit(1);
1.13 markus 743: }
1.48 provos 744: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.65 stevesk 745: fprintf(stderr,
1.47 ho 746: "%s line %d: garbage at end of line; \"%.200s\".\n",
747: filename, linenum, arg);
1.25 markus 748: exit(1);
1.13 markus 749: }
1.1 deraadt 750: }
1.25 markus 751: fclose(f);
752: if (bad_options > 0) {
753: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
754: filename, bad_options);
755: exit(1);
1.1 deraadt 756: }
757: }
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