Annotation of src/usr.bin/ssh/servconf.c, Revision 1.54
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"
1.54 ! markus 13: RCSID("$OpenBSD: servconf.c,v 1.53 2000/10/14 12:12:09 markus Exp $");
1.1 deraadt 14:
15: #include "ssh.h"
16: #include "servconf.h"
17: #include "xmalloc.h"
1.33 markus 18: #include "compat.h"
1.1 deraadt 19:
1.29 markus 20: /* add listen address */
21: void add_listen_addr(ServerOptions *options, char *addr);
22:
1.1 deraadt 23: /* Initializes the server options to their default values. */
24:
1.34 markus 25: void
1.25 markus 26: initialize_server_options(ServerOptions *options)
1.1 deraadt 27: {
1.25 markus 28: memset(options, 0, sizeof(*options));
1.29 markus 29: options->num_ports = 0;
30: options->ports_from_cmdline = 0;
31: options->listen_addrs = NULL;
1.54 ! markus 32: options->num_host_key_files = 0;
1.36 markus 33: options->pid_file = NULL;
1.25 markus 34: options->server_key_bits = -1;
35: options->login_grace_time = -1;
36: options->key_regeneration_time = -1;
37: options->permit_root_login = -1;
38: options->ignore_rhosts = -1;
39: options->ignore_user_known_hosts = -1;
40: options->print_motd = -1;
41: options->check_mail = -1;
42: options->x11_forwarding = -1;
43: options->x11_display_offset = -1;
1.42 markus 44: options->xauth_location = NULL;
1.25 markus 45: options->strict_modes = -1;
46: options->keepalives = -1;
47: options->log_facility = (SyslogFacility) - 1;
48: options->log_level = (LogLevel) - 1;
49: options->rhosts_authentication = -1;
50: options->rhosts_rsa_authentication = -1;
51: options->rsa_authentication = -1;
1.54 ! markus 52: options->pubkey_authentication = -1;
1.1 deraadt 53: #ifdef KRB4
1.25 markus 54: options->kerberos_authentication = -1;
55: options->kerberos_or_local_passwd = -1;
56: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 57: #endif
1.4 dugsong 58: #ifdef AFS
1.25 markus 59: options->kerberos_tgt_passing = -1;
60: options->afs_token_passing = -1;
1.1 deraadt 61: #endif
1.25 markus 62: options->password_authentication = -1;
1.52 markus 63: options->kbd_interactive_authentication = -1;
1.10 markus 64: #ifdef SKEY
1.25 markus 65: options->skey_authentication = -1;
1.10 markus 66: #endif
1.25 markus 67: options->permit_empty_passwd = -1;
68: options->use_login = -1;
1.53 markus 69: options->allow_tcp_forwarding = -1;
1.25 markus 70: options->num_allow_users = 0;
71: options->num_deny_users = 0;
72: options->num_allow_groups = 0;
73: options->num_deny_groups = 0;
1.33 markus 74: options->ciphers = NULL;
75: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 76: options->gateway_ports = -1;
1.43 jakob 77: options->num_subsystems = 0;
1.50 markus 78: options->max_startups_begin = -1;
79: options->max_startups_rate = -1;
1.46 markus 80: options->max_startups = -1;
1.1 deraadt 81: }
82:
1.34 markus 83: void
1.25 markus 84: fill_default_server_options(ServerOptions *options)
1.1 deraadt 85: {
1.54 ! markus 86: if (options->protocol == SSH_PROTO_UNKNOWN)
! 87: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
! 88: if (options->num_host_key_files == 0) {
! 89: /* fill default hostkeys for protocols */
! 90: if (options->protocol & SSH_PROTO_1)
! 91: options->host_key_files[options->num_host_key_files++] = HOST_KEY_FILE;
! 92: if (options->protocol & SSH_PROTO_2)
! 93: options->host_key_files[options->num_host_key_files++] = HOST_DSA_KEY_FILE;
! 94: }
1.29 markus 95: if (options->num_ports == 0)
96: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
97: if (options->listen_addrs == NULL)
98: add_listen_addr(options, NULL);
1.36 markus 99: if (options->pid_file == NULL)
100: options->pid_file = SSH_DAEMON_PID_FILE;
1.25 markus 101: if (options->server_key_bits == -1)
102: options->server_key_bits = 768;
103: if (options->login_grace_time == -1)
104: options->login_grace_time = 600;
105: if (options->key_regeneration_time == -1)
106: options->key_regeneration_time = 3600;
107: if (options->permit_root_login == -1)
108: options->permit_root_login = 1; /* yes */
109: if (options->ignore_rhosts == -1)
1.30 markus 110: options->ignore_rhosts = 1;
1.25 markus 111: if (options->ignore_user_known_hosts == -1)
112: options->ignore_user_known_hosts = 0;
113: if (options->check_mail == -1)
114: options->check_mail = 0;
115: if (options->print_motd == -1)
116: options->print_motd = 1;
117: if (options->x11_forwarding == -1)
1.30 markus 118: options->x11_forwarding = 0;
1.25 markus 119: if (options->x11_display_offset == -1)
1.30 markus 120: options->x11_display_offset = 10;
1.42 markus 121: #ifdef XAUTH_PATH
122: if (options->xauth_location == NULL)
123: options->xauth_location = XAUTH_PATH;
124: #endif /* XAUTH_PATH */
1.25 markus 125: if (options->strict_modes == -1)
126: options->strict_modes = 1;
127: if (options->keepalives == -1)
128: options->keepalives = 1;
129: if (options->log_facility == (SyslogFacility) (-1))
130: options->log_facility = SYSLOG_FACILITY_AUTH;
131: if (options->log_level == (LogLevel) (-1))
132: options->log_level = SYSLOG_LEVEL_INFO;
133: if (options->rhosts_authentication == -1)
134: options->rhosts_authentication = 0;
135: if (options->rhosts_rsa_authentication == -1)
1.30 markus 136: options->rhosts_rsa_authentication = 0;
1.25 markus 137: if (options->rsa_authentication == -1)
138: options->rsa_authentication = 1;
1.54 ! markus 139: if (options->pubkey_authentication == -1)
! 140: options->pubkey_authentication = 1;
1.1 deraadt 141: #ifdef KRB4
1.25 markus 142: if (options->kerberos_authentication == -1)
143: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
144: if (options->kerberos_or_local_passwd == -1)
145: options->kerberos_or_local_passwd = 1;
146: if (options->kerberos_ticket_cleanup == -1)
147: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 148: #endif /* KRB4 */
149: #ifdef AFS
1.25 markus 150: if (options->kerberos_tgt_passing == -1)
151: options->kerberos_tgt_passing = 0;
152: if (options->afs_token_passing == -1)
153: options->afs_token_passing = k_hasafs();
1.4 dugsong 154: #endif /* AFS */
1.25 markus 155: if (options->password_authentication == -1)
156: options->password_authentication = 1;
1.52 markus 157: if (options->kbd_interactive_authentication == -1)
158: options->kbd_interactive_authentication = 0;
1.10 markus 159: #ifdef SKEY
1.25 markus 160: if (options->skey_authentication == -1)
161: options->skey_authentication = 1;
1.10 markus 162: #endif
1.25 markus 163: if (options->permit_empty_passwd == -1)
1.30 markus 164: options->permit_empty_passwd = 0;
1.25 markus 165: if (options->use_login == -1)
166: options->use_login = 0;
1.53 markus 167: if (options->allow_tcp_forwarding == -1)
168: options->allow_tcp_forwarding = 1;
1.38 markus 169: if (options->gateway_ports == -1)
170: options->gateway_ports = 0;
1.46 markus 171: if (options->max_startups == -1)
172: options->max_startups = 10;
1.50 markus 173: if (options->max_startups_rate == -1)
174: options->max_startups_rate = 100; /* 100% */
175: if (options->max_startups_begin == -1)
176: options->max_startups_begin = options->max_startups;
1.1 deraadt 177: }
178:
179: /* Keyword tokens. */
1.25 markus 180: typedef enum {
181: sBadOption, /* == unknown option */
182: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
183: sPermitRootLogin, sLogFacility, sLogLevel,
184: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 185: #ifdef KRB4
1.25 markus 186: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 187: #endif
188: #ifdef AFS
1.25 markus 189: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 190: #endif
1.10 markus 191: #ifdef SKEY
1.25 markus 192: sSkeyAuthentication,
1.10 markus 193: #endif
1.52 markus 194: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.25 markus 195: sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset,
196: sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail,
1.53 markus 197: sUseLogin, sAllowTcpForwarding,
198: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.54 ! markus 199: sIgnoreUserKnownHosts, sCiphers, sProtocol, sPidFile,
! 200: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.1 deraadt 201: } ServerOpCodes;
202:
203: /* Textual representation of the tokens. */
1.25 markus 204: static struct {
205: const char *name;
206: ServerOpCodes opcode;
207: } keywords[] = {
208: { "port", sPort },
209: { "hostkey", sHostKeyFile },
1.54 ! markus 210: { "hostdsakey", sHostKeyFile }, /* alias */
1.36 markus 211: { "pidfile", sPidFile },
1.25 markus 212: { "serverkeybits", sServerKeyBits },
213: { "logingracetime", sLoginGraceTime },
214: { "keyregenerationinterval", sKeyRegenerationTime },
215: { "permitrootlogin", sPermitRootLogin },
216: { "syslogfacility", sLogFacility },
217: { "loglevel", sLogLevel },
218: { "rhostsauthentication", sRhostsAuthentication },
219: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
220: { "rsaauthentication", sRSAAuthentication },
1.54 ! markus 221: { "pubkeyauthentication", sPubkeyAuthentication },
! 222: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 223: #ifdef KRB4
1.25 markus 224: { "kerberosauthentication", sKerberosAuthentication },
225: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
226: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 227: #endif
1.4 dugsong 228: #ifdef AFS
1.25 markus 229: { "kerberostgtpassing", sKerberosTgtPassing },
230: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 231: #endif
1.25 markus 232: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 233: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.10 markus 234: #ifdef SKEY
1.25 markus 235: { "skeyauthentication", sSkeyAuthentication },
1.10 markus 236: #endif
1.25 markus 237: { "checkmail", sCheckMail },
238: { "listenaddress", sListenAddress },
239: { "printmotd", sPrintMotd },
240: { "ignorerhosts", sIgnoreRhosts },
241: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
242: { "x11forwarding", sX11Forwarding },
243: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 244: { "xauthlocation", sXAuthLocation },
1.25 markus 245: { "strictmodes", sStrictModes },
246: { "permitemptypasswords", sEmptyPasswd },
247: { "uselogin", sUseLogin },
248: { "randomseed", sRandomSeedFile },
249: { "keepalive", sKeepAlives },
1.53 markus 250: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 251: { "allowusers", sAllowUsers },
252: { "denyusers", sDenyUsers },
253: { "allowgroups", sAllowGroups },
254: { "denygroups", sDenyGroups },
1.33 markus 255: { "ciphers", sCiphers },
256: { "protocol", sProtocol },
1.38 markus 257: { "gatewayports", sGatewayPorts },
1.43 jakob 258: { "subsystem", sSubsystem },
1.46 markus 259: { "maxstartups", sMaxStartups },
1.25 markus 260: { NULL, 0 }
1.1 deraadt 261: };
262:
1.27 markus 263: /*
264: * Returns the number of the token pointed to by cp of length len. Never
265: * returns if the token is not known.
266: */
1.1 deraadt 267:
1.34 markus 268: static ServerOpCodes
1.25 markus 269: parse_token(const char *cp, const char *filename,
270: int linenum)
1.1 deraadt 271: {
1.25 markus 272: unsigned int i;
1.1 deraadt 273:
1.25 markus 274: for (i = 0; keywords[i].name; i++)
1.28 markus 275: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 276: return keywords[i].opcode;
277:
278: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
279: filename, linenum, cp);
280: return sBadOption;
1.1 deraadt 281: }
282:
1.29 markus 283: /*
284: * add listen address
285: */
1.34 markus 286: void
1.29 markus 287: add_listen_addr(ServerOptions *options, char *addr)
288: {
289: extern int IPv4or6;
290: struct addrinfo hints, *ai, *aitop;
291: char strport[NI_MAXSERV];
292: int gaierr;
293: int i;
294:
295: if (options->num_ports == 0)
296: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
297: for (i = 0; i < options->num_ports; i++) {
298: memset(&hints, 0, sizeof(hints));
299: hints.ai_family = IPv4or6;
300: hints.ai_socktype = SOCK_STREAM;
301: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
302: snprintf(strport, sizeof strport, "%d", options->ports[i]);
303: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
304: fatal("bad addr or host: %s (%s)\n",
305: addr ? addr : "<NULL>",
306: gai_strerror(gaierr));
307: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
308: ;
309: ai->ai_next = options->listen_addrs;
310: options->listen_addrs = aitop;
311: }
312: }
313:
1.1 deraadt 314: /* Reads the server configuration file. */
315:
1.34 markus 316: void
1.25 markus 317: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 318: {
1.25 markus 319: FILE *f;
320: char line[1024];
1.47 ho 321: char *cp, **charptr, *arg;
1.25 markus 322: int linenum, *intptr, value;
323: int bad_options = 0;
324: ServerOpCodes opcode;
1.43 jakob 325: int i;
1.25 markus 326:
327: f = fopen(filename, "r");
328: if (!f) {
329: perror(filename);
1.1 deraadt 330: exit(1);
1.25 markus 331: }
332: linenum = 0;
333: while (fgets(line, sizeof(line), f)) {
334: linenum++;
1.48 provos 335: cp = line;
336: arg = strdelim(&cp);
337: /* Ignore leading whitespace */
338: if (*arg == '\0')
1.49 markus 339: arg = strdelim(&cp);
1.48 provos 340: if (!*arg || *arg == '#')
1.25 markus 341: continue;
1.54 ! markus 342: intptr = NULL;
! 343: charptr = NULL;
1.47 ho 344: opcode = parse_token(arg, filename, linenum);
1.25 markus 345: switch (opcode) {
346: case sBadOption:
347: bad_options++;
348: continue;
349: case sPort:
1.29 markus 350: /* ignore ports from configfile if cmdline specifies ports */
351: if (options->ports_from_cmdline)
352: continue;
353: if (options->listen_addrs != NULL)
354: fatal("%s line %d: ports must be specified before "
355: "ListenAdress.\n", filename, linenum);
356: if (options->num_ports >= MAX_PORTS)
357: fatal("%s line %d: too many ports.\n",
1.34 markus 358: filename, linenum);
1.48 provos 359: arg = strdelim(&cp);
1.47 ho 360: if (!arg || *arg == '\0')
1.29 markus 361: fatal("%s line %d: missing port number.\n",
362: filename, linenum);
1.47 ho 363: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 364: break;
365:
366: case sServerKeyBits:
367: intptr = &options->server_key_bits;
1.25 markus 368: parse_int:
1.48 provos 369: arg = strdelim(&cp);
1.47 ho 370: if (!arg || *arg == '\0') {
1.25 markus 371: fprintf(stderr, "%s line %d: missing integer value.\n",
372: filename, linenum);
373: exit(1);
374: }
1.47 ho 375: value = atoi(arg);
1.25 markus 376: if (*intptr == -1)
377: *intptr = value;
378: break;
379:
380: case sLoginGraceTime:
381: intptr = &options->login_grace_time;
382: goto parse_int;
383:
384: case sKeyRegenerationTime:
385: intptr = &options->key_regeneration_time;
386: goto parse_int;
387:
388: case sListenAddress:
1.48 provos 389: arg = strdelim(&cp);
1.47 ho 390: if (!arg || *arg == '\0')
1.29 markus 391: fatal("%s line %d: missing inet addr.\n",
392: filename, linenum);
1.47 ho 393: add_listen_addr(options, arg);
1.25 markus 394: break;
395:
396: case sHostKeyFile:
1.54 ! markus 397: intptr = &options->num_host_key_files;
! 398: if (*intptr >= MAX_HOSTKEYS) {
! 399: fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n",
! 400: filename, linenum, MAX_HOSTKEYS);
! 401: exit(1);
! 402: }
! 403: charptr = &options->host_key_files[*intptr];
1.42 markus 404: parse_filename:
1.48 provos 405: arg = strdelim(&cp);
1.47 ho 406: if (!arg || *arg == '\0') {
1.25 markus 407: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 408: filename, linenum);
409: exit(1);
410: }
1.54 ! markus 411: if (*charptr == NULL) {
1.47 ho 412: *charptr = tilde_expand_filename(arg, getuid());
1.54 ! markus 413: /* increase optional counter */
! 414: if (intptr != NULL)
! 415: *intptr = *intptr + 1;
! 416: }
1.36 markus 417: break;
418:
419: case sPidFile:
420: charptr = &options->pid_file;
1.42 markus 421: goto parse_filename;
1.25 markus 422:
423: case sRandomSeedFile:
424: fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n",
425: filename, linenum);
1.48 provos 426: arg = strdelim(&cp);
1.25 markus 427: break;
428:
429: case sPermitRootLogin:
430: intptr = &options->permit_root_login;
1.48 provos 431: arg = strdelim(&cp);
1.47 ho 432: if (!arg || *arg == '\0') {
1.25 markus 433: fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
434: filename, linenum);
435: exit(1);
436: }
1.47 ho 437: if (strcmp(arg, "without-password") == 0)
1.25 markus 438: value = 2;
1.47 ho 439: else if (strcmp(arg, "yes") == 0)
1.25 markus 440: value = 1;
1.47 ho 441: else if (strcmp(arg, "no") == 0)
1.25 markus 442: value = 0;
443: else {
444: fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n",
1.47 ho 445: filename, linenum, arg);
1.25 markus 446: exit(1);
447: }
448: if (*intptr == -1)
449: *intptr = value;
450: break;
451:
452: case sIgnoreRhosts:
453: intptr = &options->ignore_rhosts;
454: parse_flag:
1.48 provos 455: arg = strdelim(&cp);
1.47 ho 456: if (!arg || *arg == '\0') {
1.25 markus 457: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
458: filename, linenum);
459: exit(1);
460: }
1.47 ho 461: if (strcmp(arg, "yes") == 0)
1.25 markus 462: value = 1;
1.47 ho 463: else if (strcmp(arg, "no") == 0)
1.25 markus 464: value = 0;
465: else {
466: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 467: filename, linenum, arg);
1.25 markus 468: exit(1);
469: }
470: if (*intptr == -1)
471: *intptr = value;
472: break;
473:
474: case sIgnoreUserKnownHosts:
475: intptr = &options->ignore_user_known_hosts;
1.31 markus 476: goto parse_flag;
1.25 markus 477:
478: case sRhostsAuthentication:
479: intptr = &options->rhosts_authentication;
480: goto parse_flag;
481:
482: case sRhostsRSAAuthentication:
483: intptr = &options->rhosts_rsa_authentication;
484: goto parse_flag;
485:
486: case sRSAAuthentication:
487: intptr = &options->rsa_authentication;
1.39 markus 488: goto parse_flag;
489:
1.54 ! markus 490: case sPubkeyAuthentication:
! 491: intptr = &options->pubkey_authentication;
1.25 markus 492: goto parse_flag;
493:
1.1 deraadt 494: #ifdef KRB4
1.25 markus 495: case sKerberosAuthentication:
496: intptr = &options->kerberos_authentication;
497: goto parse_flag;
498:
499: case sKerberosOrLocalPasswd:
500: intptr = &options->kerberos_or_local_passwd;
501: goto parse_flag;
502:
503: case sKerberosTicketCleanup:
504: intptr = &options->kerberos_ticket_cleanup;
505: goto parse_flag;
1.1 deraadt 506: #endif
1.25 markus 507:
1.4 dugsong 508: #ifdef AFS
1.25 markus 509: case sKerberosTgtPassing:
510: intptr = &options->kerberos_tgt_passing;
511: goto parse_flag;
512:
513: case sAFSTokenPassing:
514: intptr = &options->afs_token_passing;
515: goto parse_flag;
516: #endif
517:
518: case sPasswordAuthentication:
519: intptr = &options->password_authentication;
1.52 markus 520: goto parse_flag;
521:
522: case sKbdInteractiveAuthentication:
523: intptr = &options->kbd_interactive_authentication;
1.25 markus 524: goto parse_flag;
525:
526: case sCheckMail:
527: intptr = &options->check_mail;
528: goto parse_flag;
1.10 markus 529:
530: #ifdef SKEY
1.25 markus 531: case sSkeyAuthentication:
532: intptr = &options->skey_authentication;
533: goto parse_flag;
534: #endif
535:
536: case sPrintMotd:
537: intptr = &options->print_motd;
538: goto parse_flag;
539:
540: case sX11Forwarding:
541: intptr = &options->x11_forwarding;
542: goto parse_flag;
543:
544: case sX11DisplayOffset:
545: intptr = &options->x11_display_offset;
546: goto parse_int;
547:
1.42 markus 548: case sXAuthLocation:
549: charptr = &options->xauth_location;
550: goto parse_filename;
551:
1.25 markus 552: case sStrictModes:
553: intptr = &options->strict_modes;
554: goto parse_flag;
555:
556: case sKeepAlives:
557: intptr = &options->keepalives;
558: goto parse_flag;
559:
560: case sEmptyPasswd:
561: intptr = &options->permit_empty_passwd;
562: goto parse_flag;
563:
564: case sUseLogin:
565: intptr = &options->use_login;
1.38 markus 566: goto parse_flag;
567:
568: case sGatewayPorts:
569: intptr = &options->gateway_ports;
1.25 markus 570: goto parse_flag;
571:
572: case sLogFacility:
573: intptr = (int *) &options->log_facility;
1.48 provos 574: arg = strdelim(&cp);
1.47 ho 575: value = log_facility_number(arg);
1.25 markus 576: if (value == (SyslogFacility) - 1)
577: fatal("%.200s line %d: unsupported log facility '%s'\n",
1.47 ho 578: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 579: if (*intptr == -1)
580: *intptr = (SyslogFacility) value;
581: break;
582:
583: case sLogLevel:
584: intptr = (int *) &options->log_level;
1.48 provos 585: arg = strdelim(&cp);
1.47 ho 586: value = log_level_number(arg);
1.25 markus 587: if (value == (LogLevel) - 1)
588: fatal("%.200s line %d: unsupported log level '%s'\n",
1.47 ho 589: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 590: if (*intptr == -1)
591: *intptr = (LogLevel) value;
592: break;
1.53 markus 593:
594: case sAllowTcpForwarding:
595: intptr = &options->allow_tcp_forwarding;
596: goto parse_flag;
1.25 markus 597:
598: case sAllowUsers:
1.48 provos 599: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 600: if (options->num_allow_users >= MAX_ALLOW_USERS)
601: fatal("%s line %d: too many allow users.\n",
602: filename, linenum);
1.47 ho 603: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 604: }
605: break;
606:
607: case sDenyUsers:
1.48 provos 608: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 609: if (options->num_deny_users >= MAX_DENY_USERS)
610: fatal( "%s line %d: too many deny users.\n",
611: filename, linenum);
1.47 ho 612: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 613: }
614: break;
615:
616: case sAllowGroups:
1.48 provos 617: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 618: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
619: fatal("%s line %d: too many allow groups.\n",
620: filename, linenum);
1.47 ho 621: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 622: }
623: break;
624:
625: case sDenyGroups:
1.48 provos 626: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 627: if (options->num_deny_groups >= MAX_DENY_GROUPS)
628: fatal("%s line %d: too many deny groups.\n",
629: filename, linenum);
1.47 ho 630: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 631: }
1.33 markus 632: break;
633:
634: case sCiphers:
1.48 provos 635: arg = strdelim(&cp);
1.47 ho 636: if (!arg || *arg == '\0')
1.41 markus 637: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 638: if (!ciphers_valid(arg))
1.40 markus 639: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 640: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 641: if (options->ciphers == NULL)
1.47 ho 642: options->ciphers = xstrdup(arg);
1.33 markus 643: break;
644:
645: case sProtocol:
646: intptr = &options->protocol;
1.48 provos 647: arg = strdelim(&cp);
1.47 ho 648: if (!arg || *arg == '\0')
1.41 markus 649: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 650: value = proto_spec(arg);
1.33 markus 651: if (value == SSH_PROTO_UNKNOWN)
652: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 653: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 654: if (*intptr == SSH_PROTO_UNKNOWN)
655: *intptr = value;
1.43 jakob 656: break;
657:
658: case sSubsystem:
659: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
660: fatal("%s line %d: too many subsystems defined.",
661: filename, linenum);
662: }
1.48 provos 663: arg = strdelim(&cp);
1.47 ho 664: if (!arg || *arg == '\0')
1.43 jakob 665: fatal("%s line %d: Missing subsystem name.",
666: filename, linenum);
667: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 668: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 669: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 670: filename, linenum, arg);
671: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 672: arg = strdelim(&cp);
1.47 ho 673: if (!arg || *arg == '\0')
1.43 jakob 674: fatal("%s line %d: Missing subsystem command.",
675: filename, linenum);
1.47 ho 676: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 677: options->num_subsystems++;
1.25 markus 678: break;
1.46 markus 679:
680: case sMaxStartups:
1.50 markus 681: arg = strdelim(&cp);
682: if (!arg || *arg == '\0')
683: fatal("%s line %d: Missing MaxStartups spec.",
684: filename, linenum);
685: if (sscanf(arg, "%d:%d:%d",
686: &options->max_startups_begin,
687: &options->max_startups_rate,
688: &options->max_startups) == 3) {
689: if (options->max_startups_begin >
690: options->max_startups ||
691: options->max_startups_rate > 100 ||
692: options->max_startups_rate < 1)
693: fatal("%s line %d: Illegal MaxStartups spec.",
694: filename, linenum);
695: break;
696: }
1.46 markus 697: intptr = &options->max_startups;
698: goto parse_int;
1.25 markus 699:
700: default:
701: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 702: filename, linenum, arg, opcode);
1.25 markus 703: exit(1);
1.13 markus 704: }
1.48 provos 705: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.47 ho 706: fprintf(stderr,
707: "%s line %d: garbage at end of line; \"%.200s\".\n",
708: filename, linenum, arg);
1.25 markus 709: exit(1);
1.13 markus 710: }
1.1 deraadt 711: }
1.25 markus 712: fclose(f);
713: if (bad_options > 0) {
714: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
715: filename, bad_options);
716: exit(1);
1.1 deraadt 717: }
718: }
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