Annotation of src/usr.bin/ssh/servconf.c, Revision 1.62
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"
1.62 ! markus 13: RCSID("$OpenBSD: servconf.c,v 1.61 2001/01/20 23:00:56 djm Exp $");
! 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"
1.1 deraadt 31:
1.29 markus 32: /* add listen address */
33: void add_listen_addr(ServerOptions *options, char *addr);
34:
1.62 ! markus 35: /* AF_UNSPEC or AF_INET or AF_INET6 */
! 36: extern int IPv4or6;
! 37:
1.1 deraadt 38: /* Initializes the server options to their default values. */
39:
1.34 markus 40: void
1.25 markus 41: initialize_server_options(ServerOptions *options)
1.1 deraadt 42: {
1.25 markus 43: memset(options, 0, sizeof(*options));
1.29 markus 44: options->num_ports = 0;
45: options->ports_from_cmdline = 0;
46: options->listen_addrs = NULL;
1.54 markus 47: options->num_host_key_files = 0;
1.36 markus 48: options->pid_file = NULL;
1.25 markus 49: options->server_key_bits = -1;
50: options->login_grace_time = -1;
51: options->key_regeneration_time = -1;
52: options->permit_root_login = -1;
53: options->ignore_rhosts = -1;
54: options->ignore_user_known_hosts = -1;
55: options->print_motd = -1;
56: options->check_mail = -1;
57: options->x11_forwarding = -1;
58: options->x11_display_offset = -1;
1.42 markus 59: options->xauth_location = NULL;
1.25 markus 60: options->strict_modes = -1;
61: options->keepalives = -1;
62: options->log_facility = (SyslogFacility) - 1;
63: options->log_level = (LogLevel) - 1;
64: options->rhosts_authentication = -1;
65: options->rhosts_rsa_authentication = -1;
66: options->rsa_authentication = -1;
1.54 markus 67: options->pubkey_authentication = -1;
1.1 deraadt 68: #ifdef KRB4
1.25 markus 69: options->kerberos_authentication = -1;
70: options->kerberos_or_local_passwd = -1;
71: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 72: #endif
1.4 dugsong 73: #ifdef AFS
1.25 markus 74: options->kerberos_tgt_passing = -1;
75: options->afs_token_passing = -1;
1.1 deraadt 76: #endif
1.25 markus 77: options->password_authentication = -1;
1.52 markus 78: options->kbd_interactive_authentication = -1;
1.25 markus 79: options->skey_authentication = -1;
80: options->permit_empty_passwd = -1;
81: options->use_login = -1;
1.53 markus 82: options->allow_tcp_forwarding = -1;
1.25 markus 83: options->num_allow_users = 0;
84: options->num_deny_users = 0;
85: options->num_allow_groups = 0;
86: options->num_deny_groups = 0;
1.33 markus 87: options->ciphers = NULL;
88: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 89: options->gateway_ports = -1;
1.43 jakob 90: options->num_subsystems = 0;
1.50 markus 91: options->max_startups_begin = -1;
92: options->max_startups_rate = -1;
1.46 markus 93: options->max_startups = -1;
1.57 markus 94: options->banner = NULL;
1.1 deraadt 95: }
96:
1.34 markus 97: void
1.25 markus 98: fill_default_server_options(ServerOptions *options)
1.1 deraadt 99: {
1.54 markus 100: if (options->protocol == SSH_PROTO_UNKNOWN)
101: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
102: if (options->num_host_key_files == 0) {
103: /* fill default hostkeys for protocols */
104: if (options->protocol & SSH_PROTO_1)
1.60 markus 105: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 106: if (options->protocol & SSH_PROTO_2)
1.60 markus 107: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 108: }
1.29 markus 109: if (options->num_ports == 0)
110: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
111: if (options->listen_addrs == NULL)
112: add_listen_addr(options, NULL);
1.36 markus 113: if (options->pid_file == NULL)
1.60 markus 114: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 115: if (options->server_key_bits == -1)
116: options->server_key_bits = 768;
117: if (options->login_grace_time == -1)
118: options->login_grace_time = 600;
119: if (options->key_regeneration_time == -1)
120: options->key_regeneration_time = 3600;
121: if (options->permit_root_login == -1)
122: options->permit_root_login = 1; /* yes */
123: if (options->ignore_rhosts == -1)
1.30 markus 124: options->ignore_rhosts = 1;
1.25 markus 125: if (options->ignore_user_known_hosts == -1)
126: options->ignore_user_known_hosts = 0;
127: if (options->check_mail == -1)
128: options->check_mail = 0;
129: if (options->print_motd == -1)
130: options->print_motd = 1;
131: if (options->x11_forwarding == -1)
1.30 markus 132: options->x11_forwarding = 0;
1.25 markus 133: if (options->x11_display_offset == -1)
1.30 markus 134: options->x11_display_offset = 10;
1.42 markus 135: #ifdef XAUTH_PATH
136: if (options->xauth_location == NULL)
137: options->xauth_location = XAUTH_PATH;
138: #endif /* XAUTH_PATH */
1.25 markus 139: if (options->strict_modes == -1)
140: options->strict_modes = 1;
141: if (options->keepalives == -1)
142: options->keepalives = 1;
143: if (options->log_facility == (SyslogFacility) (-1))
144: options->log_facility = SYSLOG_FACILITY_AUTH;
145: if (options->log_level == (LogLevel) (-1))
1.58 markus 146: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 147: if (options->rhosts_authentication == -1)
148: options->rhosts_authentication = 0;
149: if (options->rhosts_rsa_authentication == -1)
1.30 markus 150: options->rhosts_rsa_authentication = 0;
1.25 markus 151: if (options->rsa_authentication == -1)
152: options->rsa_authentication = 1;
1.54 markus 153: if (options->pubkey_authentication == -1)
154: options->pubkey_authentication = 1;
1.1 deraadt 155: #ifdef KRB4
1.25 markus 156: if (options->kerberos_authentication == -1)
157: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
158: if (options->kerberos_or_local_passwd == -1)
159: options->kerberos_or_local_passwd = 1;
160: if (options->kerberos_ticket_cleanup == -1)
161: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 162: #endif /* KRB4 */
163: #ifdef AFS
1.25 markus 164: if (options->kerberos_tgt_passing == -1)
165: options->kerberos_tgt_passing = 0;
166: if (options->afs_token_passing == -1)
167: options->afs_token_passing = k_hasafs();
1.4 dugsong 168: #endif /* AFS */
1.25 markus 169: if (options->password_authentication == -1)
170: options->password_authentication = 1;
1.52 markus 171: if (options->kbd_interactive_authentication == -1)
172: options->kbd_interactive_authentication = 0;
1.25 markus 173: if (options->skey_authentication == -1)
174: options->skey_authentication = 1;
175: if (options->permit_empty_passwd == -1)
1.30 markus 176: options->permit_empty_passwd = 0;
1.25 markus 177: if (options->use_login == -1)
178: options->use_login = 0;
1.53 markus 179: if (options->allow_tcp_forwarding == -1)
180: options->allow_tcp_forwarding = 1;
1.38 markus 181: if (options->gateway_ports == -1)
182: options->gateway_ports = 0;
1.46 markus 183: if (options->max_startups == -1)
184: options->max_startups = 10;
1.50 markus 185: if (options->max_startups_rate == -1)
186: options->max_startups_rate = 100; /* 100% */
187: if (options->max_startups_begin == -1)
188: options->max_startups_begin = options->max_startups;
1.1 deraadt 189: }
190:
191: /* Keyword tokens. */
1.25 markus 192: typedef enum {
193: sBadOption, /* == unknown option */
194: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
195: sPermitRootLogin, sLogFacility, sLogLevel,
196: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 197: #ifdef KRB4
1.25 markus 198: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 199: #endif
200: #ifdef AFS
1.25 markus 201: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 202: #endif
1.25 markus 203: sSkeyAuthentication,
1.52 markus 204: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.25 markus 205: sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset,
206: sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail,
1.53 markus 207: sUseLogin, sAllowTcpForwarding,
208: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.54 markus 209: sIgnoreUserKnownHosts, sCiphers, sProtocol, sPidFile,
210: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.57 markus 211: sBanner
1.1 deraadt 212: } ServerOpCodes;
213:
214: /* Textual representation of the tokens. */
1.25 markus 215: static struct {
216: const char *name;
217: ServerOpCodes opcode;
218: } keywords[] = {
219: { "port", sPort },
220: { "hostkey", sHostKeyFile },
1.54 markus 221: { "hostdsakey", sHostKeyFile }, /* alias */
1.36 markus 222: { "pidfile", sPidFile },
1.25 markus 223: { "serverkeybits", sServerKeyBits },
224: { "logingracetime", sLoginGraceTime },
225: { "keyregenerationinterval", sKeyRegenerationTime },
226: { "permitrootlogin", sPermitRootLogin },
227: { "syslogfacility", sLogFacility },
228: { "loglevel", sLogLevel },
229: { "rhostsauthentication", sRhostsAuthentication },
230: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
231: { "rsaauthentication", sRSAAuthentication },
1.54 markus 232: { "pubkeyauthentication", sPubkeyAuthentication },
233: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 234: #ifdef KRB4
1.25 markus 235: { "kerberosauthentication", sKerberosAuthentication },
236: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
237: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 238: #endif
1.4 dugsong 239: #ifdef AFS
1.25 markus 240: { "kerberostgtpassing", sKerberosTgtPassing },
241: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 242: #endif
1.25 markus 243: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 244: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.25 markus 245: { "skeyauthentication", sSkeyAuthentication },
246: { "checkmail", sCheckMail },
247: { "listenaddress", sListenAddress },
248: { "printmotd", sPrintMotd },
249: { "ignorerhosts", sIgnoreRhosts },
250: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
251: { "x11forwarding", sX11Forwarding },
252: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 253: { "xauthlocation", sXAuthLocation },
1.25 markus 254: { "strictmodes", sStrictModes },
255: { "permitemptypasswords", sEmptyPasswd },
256: { "uselogin", sUseLogin },
257: { "randomseed", sRandomSeedFile },
258: { "keepalive", sKeepAlives },
1.53 markus 259: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 260: { "allowusers", sAllowUsers },
261: { "denyusers", sDenyUsers },
262: { "allowgroups", sAllowGroups },
263: { "denygroups", sDenyGroups },
1.33 markus 264: { "ciphers", sCiphers },
265: { "protocol", sProtocol },
1.38 markus 266: { "gatewayports", sGatewayPorts },
1.43 jakob 267: { "subsystem", sSubsystem },
1.46 markus 268: { "maxstartups", sMaxStartups },
1.57 markus 269: { "banner", sBanner },
1.25 markus 270: { NULL, 0 }
1.1 deraadt 271: };
272:
1.27 markus 273: /*
274: * Returns the number of the token pointed to by cp of length len. Never
275: * returns if the token is not known.
276: */
1.1 deraadt 277:
1.34 markus 278: static ServerOpCodes
1.25 markus 279: parse_token(const char *cp, const char *filename,
280: int linenum)
1.1 deraadt 281: {
1.55 markus 282: u_int i;
1.1 deraadt 283:
1.25 markus 284: for (i = 0; keywords[i].name; i++)
1.28 markus 285: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 286: return keywords[i].opcode;
287:
288: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
289: filename, linenum, cp);
290: return sBadOption;
1.1 deraadt 291: }
292:
1.29 markus 293: /*
294: * add listen address
295: */
1.34 markus 296: void
1.29 markus 297: add_listen_addr(ServerOptions *options, char *addr)
298: {
299: struct addrinfo hints, *ai, *aitop;
300: char strport[NI_MAXSERV];
301: int gaierr;
302: int i;
303:
304: if (options->num_ports == 0)
305: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
306: for (i = 0; i < options->num_ports; i++) {
307: memset(&hints, 0, sizeof(hints));
308: hints.ai_family = IPv4or6;
309: hints.ai_socktype = SOCK_STREAM;
310: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
311: snprintf(strport, sizeof strport, "%d", options->ports[i]);
312: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
313: fatal("bad addr or host: %s (%s)\n",
314: addr ? addr : "<NULL>",
315: gai_strerror(gaierr));
316: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
317: ;
318: ai->ai_next = options->listen_addrs;
319: options->listen_addrs = aitop;
320: }
321: }
322:
1.1 deraadt 323: /* Reads the server configuration file. */
324:
1.34 markus 325: void
1.25 markus 326: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 327: {
1.25 markus 328: FILE *f;
329: char line[1024];
1.47 ho 330: char *cp, **charptr, *arg;
1.25 markus 331: int linenum, *intptr, value;
332: int bad_options = 0;
333: ServerOpCodes opcode;
1.43 jakob 334: int i;
1.25 markus 335:
336: f = fopen(filename, "r");
337: if (!f) {
338: perror(filename);
1.1 deraadt 339: exit(1);
1.25 markus 340: }
341: linenum = 0;
342: while (fgets(line, sizeof(line), f)) {
343: linenum++;
1.48 provos 344: cp = line;
345: arg = strdelim(&cp);
346: /* Ignore leading whitespace */
347: if (*arg == '\0')
1.49 markus 348: arg = strdelim(&cp);
1.61 djm 349: if (!arg || !*arg || *arg == '#')
1.25 markus 350: continue;
1.54 markus 351: intptr = NULL;
352: charptr = NULL;
1.47 ho 353: opcode = parse_token(arg, filename, linenum);
1.25 markus 354: switch (opcode) {
355: case sBadOption:
356: bad_options++;
357: continue;
358: case sPort:
1.29 markus 359: /* ignore ports from configfile if cmdline specifies ports */
360: if (options->ports_from_cmdline)
361: continue;
362: if (options->listen_addrs != NULL)
363: fatal("%s line %d: ports must be specified before "
364: "ListenAdress.\n", filename, linenum);
365: if (options->num_ports >= MAX_PORTS)
366: fatal("%s line %d: too many ports.\n",
1.34 markus 367: filename, linenum);
1.48 provos 368: arg = strdelim(&cp);
1.47 ho 369: if (!arg || *arg == '\0')
1.29 markus 370: fatal("%s line %d: missing port number.\n",
371: filename, linenum);
1.47 ho 372: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 373: break;
374:
375: case sServerKeyBits:
376: intptr = &options->server_key_bits;
1.25 markus 377: parse_int:
1.48 provos 378: arg = strdelim(&cp);
1.47 ho 379: if (!arg || *arg == '\0') {
1.25 markus 380: fprintf(stderr, "%s line %d: missing integer value.\n",
381: filename, linenum);
382: exit(1);
383: }
1.47 ho 384: value = atoi(arg);
1.25 markus 385: if (*intptr == -1)
386: *intptr = value;
387: break;
388:
389: case sLoginGraceTime:
390: intptr = &options->login_grace_time;
391: goto parse_int;
392:
393: case sKeyRegenerationTime:
394: intptr = &options->key_regeneration_time;
395: goto parse_int;
396:
397: case sListenAddress:
1.48 provos 398: arg = strdelim(&cp);
1.47 ho 399: if (!arg || *arg == '\0')
1.29 markus 400: fatal("%s line %d: missing inet addr.\n",
401: filename, linenum);
1.47 ho 402: add_listen_addr(options, arg);
1.25 markus 403: break;
404:
405: case sHostKeyFile:
1.54 markus 406: intptr = &options->num_host_key_files;
407: if (*intptr >= MAX_HOSTKEYS) {
408: fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n",
409: filename, linenum, MAX_HOSTKEYS);
410: exit(1);
411: }
412: charptr = &options->host_key_files[*intptr];
1.42 markus 413: parse_filename:
1.48 provos 414: arg = strdelim(&cp);
1.47 ho 415: if (!arg || *arg == '\0') {
1.25 markus 416: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 417: filename, linenum);
418: exit(1);
419: }
1.54 markus 420: if (*charptr == NULL) {
1.47 ho 421: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 422: /* increase optional counter */
423: if (intptr != NULL)
424: *intptr = *intptr + 1;
425: }
1.36 markus 426: break;
427:
428: case sPidFile:
429: charptr = &options->pid_file;
1.42 markus 430: goto parse_filename;
1.25 markus 431:
432: case sRandomSeedFile:
433: fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n",
434: filename, linenum);
1.48 provos 435: arg = strdelim(&cp);
1.25 markus 436: break;
437:
438: case sPermitRootLogin:
439: intptr = &options->permit_root_login;
1.48 provos 440: arg = strdelim(&cp);
1.47 ho 441: if (!arg || *arg == '\0') {
1.25 markus 442: fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
443: filename, linenum);
444: exit(1);
445: }
1.47 ho 446: if (strcmp(arg, "without-password") == 0)
1.25 markus 447: value = 2;
1.47 ho 448: else if (strcmp(arg, "yes") == 0)
1.25 markus 449: value = 1;
1.47 ho 450: else if (strcmp(arg, "no") == 0)
1.25 markus 451: value = 0;
452: else {
453: fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n",
1.47 ho 454: filename, linenum, arg);
1.25 markus 455: exit(1);
456: }
457: if (*intptr == -1)
458: *intptr = value;
459: break;
460:
461: case sIgnoreRhosts:
462: intptr = &options->ignore_rhosts;
463: parse_flag:
1.48 provos 464: arg = strdelim(&cp);
1.47 ho 465: if (!arg || *arg == '\0') {
1.25 markus 466: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
467: filename, linenum);
468: exit(1);
469: }
1.47 ho 470: if (strcmp(arg, "yes") == 0)
1.25 markus 471: value = 1;
1.47 ho 472: else if (strcmp(arg, "no") == 0)
1.25 markus 473: value = 0;
474: else {
475: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 476: filename, linenum, arg);
1.25 markus 477: exit(1);
478: }
479: if (*intptr == -1)
480: *intptr = value;
481: break;
482:
483: case sIgnoreUserKnownHosts:
484: intptr = &options->ignore_user_known_hosts;
1.31 markus 485: goto parse_flag;
1.25 markus 486:
487: case sRhostsAuthentication:
488: intptr = &options->rhosts_authentication;
489: goto parse_flag;
490:
491: case sRhostsRSAAuthentication:
492: intptr = &options->rhosts_rsa_authentication;
493: goto parse_flag;
494:
495: case sRSAAuthentication:
496: intptr = &options->rsa_authentication;
1.39 markus 497: goto parse_flag;
498:
1.54 markus 499: case sPubkeyAuthentication:
500: intptr = &options->pubkey_authentication;
1.25 markus 501: goto parse_flag;
502:
1.1 deraadt 503: #ifdef KRB4
1.25 markus 504: case sKerberosAuthentication:
505: intptr = &options->kerberos_authentication;
506: goto parse_flag;
507:
508: case sKerberosOrLocalPasswd:
509: intptr = &options->kerberos_or_local_passwd;
510: goto parse_flag;
511:
512: case sKerberosTicketCleanup:
513: intptr = &options->kerberos_ticket_cleanup;
514: goto parse_flag;
1.1 deraadt 515: #endif
1.25 markus 516:
1.4 dugsong 517: #ifdef AFS
1.25 markus 518: case sKerberosTgtPassing:
519: intptr = &options->kerberos_tgt_passing;
520: goto parse_flag;
521:
522: case sAFSTokenPassing:
523: intptr = &options->afs_token_passing;
524: goto parse_flag;
525: #endif
526:
527: case sPasswordAuthentication:
528: intptr = &options->password_authentication;
1.52 markus 529: goto parse_flag;
530:
531: case sKbdInteractiveAuthentication:
532: intptr = &options->kbd_interactive_authentication;
1.25 markus 533: goto parse_flag;
534:
535: case sCheckMail:
536: intptr = &options->check_mail;
537: goto parse_flag;
1.10 markus 538:
1.25 markus 539: case sSkeyAuthentication:
540: intptr = &options->skey_authentication;
541: goto parse_flag;
542:
543: case sPrintMotd:
544: intptr = &options->print_motd;
545: goto parse_flag;
546:
547: case sX11Forwarding:
548: intptr = &options->x11_forwarding;
549: goto parse_flag;
550:
551: case sX11DisplayOffset:
552: intptr = &options->x11_display_offset;
553: goto parse_int;
554:
1.42 markus 555: case sXAuthLocation:
556: charptr = &options->xauth_location;
557: goto parse_filename;
558:
1.25 markus 559: case sStrictModes:
560: intptr = &options->strict_modes;
561: goto parse_flag;
562:
563: case sKeepAlives:
564: intptr = &options->keepalives;
565: goto parse_flag;
566:
567: case sEmptyPasswd:
568: intptr = &options->permit_empty_passwd;
569: goto parse_flag;
570:
571: case sUseLogin:
572: intptr = &options->use_login;
1.38 markus 573: goto parse_flag;
574:
575: case sGatewayPorts:
576: intptr = &options->gateway_ports;
1.25 markus 577: goto parse_flag;
578:
579: case sLogFacility:
580: intptr = (int *) &options->log_facility;
1.48 provos 581: arg = strdelim(&cp);
1.47 ho 582: value = log_facility_number(arg);
1.25 markus 583: if (value == (SyslogFacility) - 1)
584: fatal("%.200s line %d: unsupported log facility '%s'\n",
1.47 ho 585: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 586: if (*intptr == -1)
587: *intptr = (SyslogFacility) value;
588: break;
589:
590: case sLogLevel:
591: intptr = (int *) &options->log_level;
1.48 provos 592: arg = strdelim(&cp);
1.47 ho 593: value = log_level_number(arg);
1.25 markus 594: if (value == (LogLevel) - 1)
595: fatal("%.200s line %d: unsupported log level '%s'\n",
1.47 ho 596: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 597: if (*intptr == -1)
598: *intptr = (LogLevel) value;
599: break;
1.53 markus 600:
601: case sAllowTcpForwarding:
602: intptr = &options->allow_tcp_forwarding;
603: goto parse_flag;
1.25 markus 604:
605: case sAllowUsers:
1.48 provos 606: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 607: if (options->num_allow_users >= MAX_ALLOW_USERS)
608: fatal("%s line %d: too many allow users.\n",
609: filename, linenum);
1.47 ho 610: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 611: }
612: break;
613:
614: case sDenyUsers:
1.48 provos 615: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 616: if (options->num_deny_users >= MAX_DENY_USERS)
617: fatal( "%s line %d: too many deny users.\n",
618: filename, linenum);
1.47 ho 619: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 620: }
621: break;
622:
623: case sAllowGroups:
1.48 provos 624: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 625: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
626: fatal("%s line %d: too many allow groups.\n",
627: filename, linenum);
1.47 ho 628: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 629: }
630: break;
631:
632: case sDenyGroups:
1.48 provos 633: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 634: if (options->num_deny_groups >= MAX_DENY_GROUPS)
635: fatal("%s line %d: too many deny groups.\n",
636: filename, linenum);
1.47 ho 637: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 638: }
1.33 markus 639: break;
640:
641: case sCiphers:
1.48 provos 642: arg = strdelim(&cp);
1.47 ho 643: if (!arg || *arg == '\0')
1.41 markus 644: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 645: if (!ciphers_valid(arg))
1.40 markus 646: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 647: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 648: if (options->ciphers == NULL)
1.47 ho 649: options->ciphers = xstrdup(arg);
1.33 markus 650: break;
651:
652: case sProtocol:
653: intptr = &options->protocol;
1.48 provos 654: arg = strdelim(&cp);
1.47 ho 655: if (!arg || *arg == '\0')
1.41 markus 656: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 657: value = proto_spec(arg);
1.33 markus 658: if (value == SSH_PROTO_UNKNOWN)
659: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 660: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 661: if (*intptr == SSH_PROTO_UNKNOWN)
662: *intptr = value;
1.43 jakob 663: break;
664:
665: case sSubsystem:
666: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
667: fatal("%s line %d: too many subsystems defined.",
668: filename, linenum);
669: }
1.48 provos 670: arg = strdelim(&cp);
1.47 ho 671: if (!arg || *arg == '\0')
1.43 jakob 672: fatal("%s line %d: Missing subsystem name.",
673: filename, linenum);
674: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 675: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 676: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 677: filename, linenum, arg);
678: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 679: arg = strdelim(&cp);
1.47 ho 680: if (!arg || *arg == '\0')
1.43 jakob 681: fatal("%s line %d: Missing subsystem command.",
682: filename, linenum);
1.47 ho 683: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 684: options->num_subsystems++;
1.25 markus 685: break;
1.46 markus 686:
687: case sMaxStartups:
1.50 markus 688: arg = strdelim(&cp);
689: if (!arg || *arg == '\0')
690: fatal("%s line %d: Missing MaxStartups spec.",
691: filename, linenum);
692: if (sscanf(arg, "%d:%d:%d",
693: &options->max_startups_begin,
694: &options->max_startups_rate,
695: &options->max_startups) == 3) {
696: if (options->max_startups_begin >
697: options->max_startups ||
698: options->max_startups_rate > 100 ||
699: options->max_startups_rate < 1)
700: fatal("%s line %d: Illegal MaxStartups spec.",
701: filename, linenum);
702: break;
703: }
1.46 markus 704: intptr = &options->max_startups;
705: goto parse_int;
1.25 markus 706:
1.57 markus 707: case sBanner:
708: charptr = &options->banner;
709: goto parse_filename;
710:
1.25 markus 711: default:
712: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 713: filename, linenum, arg, opcode);
1.25 markus 714: exit(1);
1.13 markus 715: }
1.48 provos 716: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.47 ho 717: fprintf(stderr,
718: "%s line %d: garbage at end of line; \"%.200s\".\n",
719: filename, linenum, arg);
1.25 markus 720: exit(1);
1.13 markus 721: }
1.1 deraadt 722: }
1.25 markus 723: fclose(f);
724: if (bad_options > 0) {
725: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
726: filename, bad_options);
727: exit(1);
1.1 deraadt 728: }
729: }
![[BACK]](/icons/back.gif){kind=icon}
Return to servconf.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / ssh