Annotation of src/usr.bin/ssh/servconf.c, Revision 1.58
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"
1.58 ! markus 13: RCSID("$OpenBSD: servconf.c,v 1.57 2001/01/08 22:29:05 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;
1.57 markus 81: options->banner = NULL;
1.1 deraadt 82: }
83:
1.34 markus 84: void
1.25 markus 85: fill_default_server_options(ServerOptions *options)
1.1 deraadt 86: {
1.54 markus 87: if (options->protocol == SSH_PROTO_UNKNOWN)
88: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
89: if (options->num_host_key_files == 0) {
90: /* fill default hostkeys for protocols */
91: if (options->protocol & SSH_PROTO_1)
92: options->host_key_files[options->num_host_key_files++] = HOST_KEY_FILE;
93: if (options->protocol & SSH_PROTO_2)
94: options->host_key_files[options->num_host_key_files++] = HOST_DSA_KEY_FILE;
95: }
1.29 markus 96: if (options->num_ports == 0)
97: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
98: if (options->listen_addrs == NULL)
99: add_listen_addr(options, NULL);
1.36 markus 100: if (options->pid_file == NULL)
101: options->pid_file = SSH_DAEMON_PID_FILE;
1.25 markus 102: if (options->server_key_bits == -1)
103: options->server_key_bits = 768;
104: if (options->login_grace_time == -1)
105: options->login_grace_time = 600;
106: if (options->key_regeneration_time == -1)
107: options->key_regeneration_time = 3600;
108: if (options->permit_root_login == -1)
109: options->permit_root_login = 1; /* yes */
110: if (options->ignore_rhosts == -1)
1.30 markus 111: options->ignore_rhosts = 1;
1.25 markus 112: if (options->ignore_user_known_hosts == -1)
113: options->ignore_user_known_hosts = 0;
114: if (options->check_mail == -1)
115: options->check_mail = 0;
116: if (options->print_motd == -1)
117: options->print_motd = 1;
118: if (options->x11_forwarding == -1)
1.30 markus 119: options->x11_forwarding = 0;
1.25 markus 120: if (options->x11_display_offset == -1)
1.30 markus 121: options->x11_display_offset = 10;
1.42 markus 122: #ifdef XAUTH_PATH
123: if (options->xauth_location == NULL)
124: options->xauth_location = XAUTH_PATH;
125: #endif /* XAUTH_PATH */
1.25 markus 126: if (options->strict_modes == -1)
127: options->strict_modes = 1;
128: if (options->keepalives == -1)
129: options->keepalives = 1;
130: if (options->log_facility == (SyslogFacility) (-1))
131: options->log_facility = SYSLOG_FACILITY_AUTH;
132: if (options->log_level == (LogLevel) (-1))
1.58 ! markus 133: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 134: if (options->rhosts_authentication == -1)
135: options->rhosts_authentication = 0;
136: if (options->rhosts_rsa_authentication == -1)
1.30 markus 137: options->rhosts_rsa_authentication = 0;
1.25 markus 138: if (options->rsa_authentication == -1)
139: options->rsa_authentication = 1;
1.54 markus 140: if (options->pubkey_authentication == -1)
141: options->pubkey_authentication = 1;
1.1 deraadt 142: #ifdef KRB4
1.25 markus 143: if (options->kerberos_authentication == -1)
144: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
145: if (options->kerberos_or_local_passwd == -1)
146: options->kerberos_or_local_passwd = 1;
147: if (options->kerberos_ticket_cleanup == -1)
148: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 149: #endif /* KRB4 */
150: #ifdef AFS
1.25 markus 151: if (options->kerberos_tgt_passing == -1)
152: options->kerberos_tgt_passing = 0;
153: if (options->afs_token_passing == -1)
154: options->afs_token_passing = k_hasafs();
1.4 dugsong 155: #endif /* AFS */
1.25 markus 156: if (options->password_authentication == -1)
157: options->password_authentication = 1;
1.52 markus 158: if (options->kbd_interactive_authentication == -1)
159: options->kbd_interactive_authentication = 0;
1.10 markus 160: #ifdef SKEY
1.25 markus 161: if (options->skey_authentication == -1)
162: options->skey_authentication = 1;
1.10 markus 163: #endif
1.25 markus 164: if (options->permit_empty_passwd == -1)
1.30 markus 165: options->permit_empty_passwd = 0;
1.25 markus 166: if (options->use_login == -1)
167: options->use_login = 0;
1.53 markus 168: if (options->allow_tcp_forwarding == -1)
169: options->allow_tcp_forwarding = 1;
1.38 markus 170: if (options->gateway_ports == -1)
171: options->gateway_ports = 0;
1.46 markus 172: if (options->max_startups == -1)
173: options->max_startups = 10;
1.50 markus 174: if (options->max_startups_rate == -1)
175: options->max_startups_rate = 100; /* 100% */
176: if (options->max_startups_begin == -1)
177: options->max_startups_begin = options->max_startups;
1.1 deraadt 178: }
179:
180: /* Keyword tokens. */
1.25 markus 181: typedef enum {
182: sBadOption, /* == unknown option */
183: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
184: sPermitRootLogin, sLogFacility, sLogLevel,
185: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 186: #ifdef KRB4
1.25 markus 187: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 188: #endif
189: #ifdef AFS
1.25 markus 190: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 191: #endif
1.10 markus 192: #ifdef SKEY
1.25 markus 193: sSkeyAuthentication,
1.10 markus 194: #endif
1.52 markus 195: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.25 markus 196: sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset,
197: sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail,
1.53 markus 198: sUseLogin, sAllowTcpForwarding,
199: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.54 markus 200: sIgnoreUserKnownHosts, sCiphers, sProtocol, sPidFile,
201: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.57 markus 202: sBanner
1.1 deraadt 203: } ServerOpCodes;
204:
205: /* Textual representation of the tokens. */
1.25 markus 206: static struct {
207: const char *name;
208: ServerOpCodes opcode;
209: } keywords[] = {
210: { "port", sPort },
211: { "hostkey", sHostKeyFile },
1.54 markus 212: { "hostdsakey", sHostKeyFile }, /* alias */
1.36 markus 213: { "pidfile", sPidFile },
1.25 markus 214: { "serverkeybits", sServerKeyBits },
215: { "logingracetime", sLoginGraceTime },
216: { "keyregenerationinterval", sKeyRegenerationTime },
217: { "permitrootlogin", sPermitRootLogin },
218: { "syslogfacility", sLogFacility },
219: { "loglevel", sLogLevel },
220: { "rhostsauthentication", sRhostsAuthentication },
221: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
222: { "rsaauthentication", sRSAAuthentication },
1.54 markus 223: { "pubkeyauthentication", sPubkeyAuthentication },
224: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 225: #ifdef KRB4
1.25 markus 226: { "kerberosauthentication", sKerberosAuthentication },
227: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
228: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 229: #endif
1.4 dugsong 230: #ifdef AFS
1.25 markus 231: { "kerberostgtpassing", sKerberosTgtPassing },
232: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 233: #endif
1.25 markus 234: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 235: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.10 markus 236: #ifdef SKEY
1.25 markus 237: { "skeyauthentication", sSkeyAuthentication },
1.10 markus 238: #endif
1.25 markus 239: { "checkmail", sCheckMail },
240: { "listenaddress", sListenAddress },
241: { "printmotd", sPrintMotd },
242: { "ignorerhosts", sIgnoreRhosts },
243: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
244: { "x11forwarding", sX11Forwarding },
245: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 246: { "xauthlocation", sXAuthLocation },
1.25 markus 247: { "strictmodes", sStrictModes },
248: { "permitemptypasswords", sEmptyPasswd },
249: { "uselogin", sUseLogin },
250: { "randomseed", sRandomSeedFile },
251: { "keepalive", sKeepAlives },
1.53 markus 252: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 253: { "allowusers", sAllowUsers },
254: { "denyusers", sDenyUsers },
255: { "allowgroups", sAllowGroups },
256: { "denygroups", sDenyGroups },
1.33 markus 257: { "ciphers", sCiphers },
258: { "protocol", sProtocol },
1.38 markus 259: { "gatewayports", sGatewayPorts },
1.43 jakob 260: { "subsystem", sSubsystem },
1.46 markus 261: { "maxstartups", sMaxStartups },
1.57 markus 262: { "banner", sBanner },
1.25 markus 263: { NULL, 0 }
1.1 deraadt 264: };
265:
1.27 markus 266: /*
267: * Returns the number of the token pointed to by cp of length len. Never
268: * returns if the token is not known.
269: */
1.1 deraadt 270:
1.34 markus 271: static ServerOpCodes
1.25 markus 272: parse_token(const char *cp, const char *filename,
273: int linenum)
1.1 deraadt 274: {
1.55 markus 275: u_int i;
1.1 deraadt 276:
1.25 markus 277: for (i = 0; keywords[i].name; i++)
1.28 markus 278: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 279: return keywords[i].opcode;
280:
281: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
282: filename, linenum, cp);
283: return sBadOption;
1.1 deraadt 284: }
285:
1.29 markus 286: /*
287: * add listen address
288: */
1.34 markus 289: void
1.29 markus 290: add_listen_addr(ServerOptions *options, char *addr)
291: {
292: extern int IPv4or6;
293: struct addrinfo hints, *ai, *aitop;
294: char strport[NI_MAXSERV];
295: int gaierr;
296: int i;
297:
298: if (options->num_ports == 0)
299: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
300: for (i = 0; i < options->num_ports; i++) {
301: memset(&hints, 0, sizeof(hints));
302: hints.ai_family = IPv4or6;
303: hints.ai_socktype = SOCK_STREAM;
304: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
305: snprintf(strport, sizeof strport, "%d", options->ports[i]);
306: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
307: fatal("bad addr or host: %s (%s)\n",
308: addr ? addr : "<NULL>",
309: gai_strerror(gaierr));
310: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
311: ;
312: ai->ai_next = options->listen_addrs;
313: options->listen_addrs = aitop;
314: }
315: }
316:
1.1 deraadt 317: /* Reads the server configuration file. */
318:
1.34 markus 319: void
1.25 markus 320: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 321: {
1.25 markus 322: FILE *f;
323: char line[1024];
1.47 ho 324: char *cp, **charptr, *arg;
1.25 markus 325: int linenum, *intptr, value;
326: int bad_options = 0;
327: ServerOpCodes opcode;
1.43 jakob 328: int i;
1.25 markus 329:
330: f = fopen(filename, "r");
331: if (!f) {
332: perror(filename);
1.1 deraadt 333: exit(1);
1.25 markus 334: }
335: linenum = 0;
336: while (fgets(line, sizeof(line), f)) {
337: linenum++;
1.48 provos 338: cp = line;
339: arg = strdelim(&cp);
340: /* Ignore leading whitespace */
341: if (*arg == '\0')
1.49 markus 342: arg = strdelim(&cp);
1.48 provos 343: if (!*arg || *arg == '#')
1.25 markus 344: continue;
1.54 markus 345: intptr = NULL;
346: charptr = NULL;
1.47 ho 347: opcode = parse_token(arg, filename, linenum);
1.25 markus 348: switch (opcode) {
349: case sBadOption:
350: bad_options++;
351: continue;
352: case sPort:
1.29 markus 353: /* ignore ports from configfile if cmdline specifies ports */
354: if (options->ports_from_cmdline)
355: continue;
356: if (options->listen_addrs != NULL)
357: fatal("%s line %d: ports must be specified before "
358: "ListenAdress.\n", filename, linenum);
359: if (options->num_ports >= MAX_PORTS)
360: fatal("%s line %d: too many ports.\n",
1.34 markus 361: filename, linenum);
1.48 provos 362: arg = strdelim(&cp);
1.47 ho 363: if (!arg || *arg == '\0')
1.29 markus 364: fatal("%s line %d: missing port number.\n",
365: filename, linenum);
1.47 ho 366: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 367: break;
368:
369: case sServerKeyBits:
370: intptr = &options->server_key_bits;
1.25 markus 371: parse_int:
1.48 provos 372: arg = strdelim(&cp);
1.47 ho 373: if (!arg || *arg == '\0') {
1.25 markus 374: fprintf(stderr, "%s line %d: missing integer value.\n",
375: filename, linenum);
376: exit(1);
377: }
1.47 ho 378: value = atoi(arg);
1.25 markus 379: if (*intptr == -1)
380: *intptr = value;
381: break;
382:
383: case sLoginGraceTime:
384: intptr = &options->login_grace_time;
385: goto parse_int;
386:
387: case sKeyRegenerationTime:
388: intptr = &options->key_regeneration_time;
389: goto parse_int;
390:
391: case sListenAddress:
1.48 provos 392: arg = strdelim(&cp);
1.47 ho 393: if (!arg || *arg == '\0')
1.29 markus 394: fatal("%s line %d: missing inet addr.\n",
395: filename, linenum);
1.47 ho 396: add_listen_addr(options, arg);
1.25 markus 397: break;
398:
399: case sHostKeyFile:
1.54 markus 400: intptr = &options->num_host_key_files;
401: if (*intptr >= MAX_HOSTKEYS) {
402: fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n",
403: filename, linenum, MAX_HOSTKEYS);
404: exit(1);
405: }
406: charptr = &options->host_key_files[*intptr];
1.42 markus 407: parse_filename:
1.48 provos 408: arg = strdelim(&cp);
1.47 ho 409: if (!arg || *arg == '\0') {
1.25 markus 410: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 411: filename, linenum);
412: exit(1);
413: }
1.54 markus 414: if (*charptr == NULL) {
1.47 ho 415: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 416: /* increase optional counter */
417: if (intptr != NULL)
418: *intptr = *intptr + 1;
419: }
1.36 markus 420: break;
421:
422: case sPidFile:
423: charptr = &options->pid_file;
1.42 markus 424: goto parse_filename;
1.25 markus 425:
426: case sRandomSeedFile:
427: fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n",
428: filename, linenum);
1.48 provos 429: arg = strdelim(&cp);
1.25 markus 430: break;
431:
432: case sPermitRootLogin:
433: intptr = &options->permit_root_login;
1.48 provos 434: arg = strdelim(&cp);
1.47 ho 435: if (!arg || *arg == '\0') {
1.25 markus 436: fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
437: filename, linenum);
438: exit(1);
439: }
1.47 ho 440: if (strcmp(arg, "without-password") == 0)
1.25 markus 441: value = 2;
1.47 ho 442: else if (strcmp(arg, "yes") == 0)
1.25 markus 443: value = 1;
1.47 ho 444: else if (strcmp(arg, "no") == 0)
1.25 markus 445: value = 0;
446: else {
447: fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n",
1.47 ho 448: filename, linenum, arg);
1.25 markus 449: exit(1);
450: }
451: if (*intptr == -1)
452: *intptr = value;
453: break;
454:
455: case sIgnoreRhosts:
456: intptr = &options->ignore_rhosts;
457: parse_flag:
1.48 provos 458: arg = strdelim(&cp);
1.47 ho 459: if (!arg || *arg == '\0') {
1.25 markus 460: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
461: filename, linenum);
462: exit(1);
463: }
1.47 ho 464: if (strcmp(arg, "yes") == 0)
1.25 markus 465: value = 1;
1.47 ho 466: else if (strcmp(arg, "no") == 0)
1.25 markus 467: value = 0;
468: else {
469: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 470: filename, linenum, arg);
1.25 markus 471: exit(1);
472: }
473: if (*intptr == -1)
474: *intptr = value;
475: break;
476:
477: case sIgnoreUserKnownHosts:
478: intptr = &options->ignore_user_known_hosts;
1.31 markus 479: goto parse_flag;
1.25 markus 480:
481: case sRhostsAuthentication:
482: intptr = &options->rhosts_authentication;
483: goto parse_flag;
484:
485: case sRhostsRSAAuthentication:
486: intptr = &options->rhosts_rsa_authentication;
487: goto parse_flag;
488:
489: case sRSAAuthentication:
490: intptr = &options->rsa_authentication;
1.39 markus 491: goto parse_flag;
492:
1.54 markus 493: case sPubkeyAuthentication:
494: intptr = &options->pubkey_authentication;
1.25 markus 495: goto parse_flag;
496:
1.1 deraadt 497: #ifdef KRB4
1.25 markus 498: case sKerberosAuthentication:
499: intptr = &options->kerberos_authentication;
500: goto parse_flag;
501:
502: case sKerberosOrLocalPasswd:
503: intptr = &options->kerberos_or_local_passwd;
504: goto parse_flag;
505:
506: case sKerberosTicketCleanup:
507: intptr = &options->kerberos_ticket_cleanup;
508: goto parse_flag;
1.1 deraadt 509: #endif
1.25 markus 510:
1.4 dugsong 511: #ifdef AFS
1.25 markus 512: case sKerberosTgtPassing:
513: intptr = &options->kerberos_tgt_passing;
514: goto parse_flag;
515:
516: case sAFSTokenPassing:
517: intptr = &options->afs_token_passing;
518: goto parse_flag;
519: #endif
520:
521: case sPasswordAuthentication:
522: intptr = &options->password_authentication;
1.52 markus 523: goto parse_flag;
524:
525: case sKbdInteractiveAuthentication:
526: intptr = &options->kbd_interactive_authentication;
1.25 markus 527: goto parse_flag;
528:
529: case sCheckMail:
530: intptr = &options->check_mail;
531: goto parse_flag;
1.10 markus 532:
533: #ifdef SKEY
1.25 markus 534: case sSkeyAuthentication:
535: intptr = &options->skey_authentication;
536: goto parse_flag;
537: #endif
538:
539: case sPrintMotd:
540: intptr = &options->print_motd;
541: goto parse_flag;
542:
543: case sX11Forwarding:
544: intptr = &options->x11_forwarding;
545: goto parse_flag;
546:
547: case sX11DisplayOffset:
548: intptr = &options->x11_display_offset;
549: goto parse_int;
550:
1.42 markus 551: case sXAuthLocation:
552: charptr = &options->xauth_location;
553: goto parse_filename;
554:
1.25 markus 555: case sStrictModes:
556: intptr = &options->strict_modes;
557: goto parse_flag;
558:
559: case sKeepAlives:
560: intptr = &options->keepalives;
561: goto parse_flag;
562:
563: case sEmptyPasswd:
564: intptr = &options->permit_empty_passwd;
565: goto parse_flag;
566:
567: case sUseLogin:
568: intptr = &options->use_login;
1.38 markus 569: goto parse_flag;
570:
571: case sGatewayPorts:
572: intptr = &options->gateway_ports;
1.25 markus 573: goto parse_flag;
574:
575: case sLogFacility:
576: intptr = (int *) &options->log_facility;
1.48 provos 577: arg = strdelim(&cp);
1.47 ho 578: value = log_facility_number(arg);
1.25 markus 579: if (value == (SyslogFacility) - 1)
580: fatal("%.200s line %d: unsupported log facility '%s'\n",
1.47 ho 581: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 582: if (*intptr == -1)
583: *intptr = (SyslogFacility) value;
584: break;
585:
586: case sLogLevel:
587: intptr = (int *) &options->log_level;
1.48 provos 588: arg = strdelim(&cp);
1.47 ho 589: value = log_level_number(arg);
1.25 markus 590: if (value == (LogLevel) - 1)
591: fatal("%.200s line %d: unsupported log level '%s'\n",
1.47 ho 592: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 593: if (*intptr == -1)
594: *intptr = (LogLevel) value;
595: break;
1.53 markus 596:
597: case sAllowTcpForwarding:
598: intptr = &options->allow_tcp_forwarding;
599: goto parse_flag;
1.25 markus 600:
601: case sAllowUsers:
1.48 provos 602: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 603: if (options->num_allow_users >= MAX_ALLOW_USERS)
604: fatal("%s line %d: too many allow users.\n",
605: filename, linenum);
1.47 ho 606: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 607: }
608: break;
609:
610: case sDenyUsers:
1.48 provos 611: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 612: if (options->num_deny_users >= MAX_DENY_USERS)
613: fatal( "%s line %d: too many deny users.\n",
614: filename, linenum);
1.47 ho 615: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 616: }
617: break;
618:
619: case sAllowGroups:
1.48 provos 620: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 621: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
622: fatal("%s line %d: too many allow groups.\n",
623: filename, linenum);
1.47 ho 624: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 625: }
626: break;
627:
628: case sDenyGroups:
1.48 provos 629: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 630: if (options->num_deny_groups >= MAX_DENY_GROUPS)
631: fatal("%s line %d: too many deny groups.\n",
632: filename, linenum);
1.47 ho 633: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 634: }
1.33 markus 635: break;
636:
637: case sCiphers:
1.48 provos 638: arg = strdelim(&cp);
1.47 ho 639: if (!arg || *arg == '\0')
1.41 markus 640: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 641: if (!ciphers_valid(arg))
1.40 markus 642: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 643: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 644: if (options->ciphers == NULL)
1.47 ho 645: options->ciphers = xstrdup(arg);
1.33 markus 646: break;
647:
648: case sProtocol:
649: intptr = &options->protocol;
1.48 provos 650: arg = strdelim(&cp);
1.47 ho 651: if (!arg || *arg == '\0')
1.41 markus 652: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 653: value = proto_spec(arg);
1.33 markus 654: if (value == SSH_PROTO_UNKNOWN)
655: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 656: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 657: if (*intptr == SSH_PROTO_UNKNOWN)
658: *intptr = value;
1.43 jakob 659: break;
660:
661: case sSubsystem:
662: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
663: fatal("%s line %d: too many subsystems defined.",
664: filename, linenum);
665: }
1.48 provos 666: arg = strdelim(&cp);
1.47 ho 667: if (!arg || *arg == '\0')
1.43 jakob 668: fatal("%s line %d: Missing subsystem name.",
669: filename, linenum);
670: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 671: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 672: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 673: filename, linenum, arg);
674: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 675: arg = strdelim(&cp);
1.47 ho 676: if (!arg || *arg == '\0')
1.43 jakob 677: fatal("%s line %d: Missing subsystem command.",
678: filename, linenum);
1.47 ho 679: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 680: options->num_subsystems++;
1.25 markus 681: break;
1.46 markus 682:
683: case sMaxStartups:
1.50 markus 684: arg = strdelim(&cp);
685: if (!arg || *arg == '\0')
686: fatal("%s line %d: Missing MaxStartups spec.",
687: filename, linenum);
688: if (sscanf(arg, "%d:%d:%d",
689: &options->max_startups_begin,
690: &options->max_startups_rate,
691: &options->max_startups) == 3) {
692: if (options->max_startups_begin >
693: options->max_startups ||
694: options->max_startups_rate > 100 ||
695: options->max_startups_rate < 1)
696: fatal("%s line %d: Illegal MaxStartups spec.",
697: filename, linenum);
698: break;
699: }
1.46 markus 700: intptr = &options->max_startups;
701: goto parse_int;
1.25 markus 702:
1.57 markus 703: case sBanner:
704: charptr = &options->banner;
705: goto parse_filename;
706:
1.25 markus 707: default:
708: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 709: filename, linenum, arg, opcode);
1.25 markus 710: exit(1);
1.13 markus 711: }
1.48 provos 712: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.47 ho 713: fprintf(stderr,
714: "%s line %d: garbage at end of line; \"%.200s\".\n",
715: filename, linenum, arg);
1.25 markus 716: exit(1);
1.13 markus 717: }
1.1 deraadt 718: }
1.25 markus 719: fclose(f);
720: if (bad_options > 0) {
721: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
722: filename, bad_options);
723: exit(1);
1.1 deraadt 724: }
725: }
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