Annotation of src/usr.bin/ssh/servconf.c, Revision 1.63
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"
1.63 ! markus 13: RCSID("$OpenBSD: servconf.c,v 1.62 2001/01/21 19:05:55 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"
1.1 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;
1.63 ! markus 79: options->challenge_reponse_authentication = -1;
1.25 markus 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;
1.63 ! markus 173: if (options->challenge_reponse_authentication == -1)
! 174: options->challenge_reponse_authentication = 1;
1.25 markus 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
1.63 ! markus 203: sChallengeResponseAuthentication,
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 },
1.63 ! markus 245: { "challengeresponseauthentication", sChallengeResponseAuthentication },
! 246: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.25 markus 247: { "checkmail", sCheckMail },
248: { "listenaddress", sListenAddress },
249: { "printmotd", sPrintMotd },
250: { "ignorerhosts", sIgnoreRhosts },
251: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
252: { "x11forwarding", sX11Forwarding },
253: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 254: { "xauthlocation", sXAuthLocation },
1.25 markus 255: { "strictmodes", sStrictModes },
256: { "permitemptypasswords", sEmptyPasswd },
257: { "uselogin", sUseLogin },
258: { "randomseed", sRandomSeedFile },
259: { "keepalive", sKeepAlives },
1.53 markus 260: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 261: { "allowusers", sAllowUsers },
262: { "denyusers", sDenyUsers },
263: { "allowgroups", sAllowGroups },
264: { "denygroups", sDenyGroups },
1.33 markus 265: { "ciphers", sCiphers },
266: { "protocol", sProtocol },
1.38 markus 267: { "gatewayports", sGatewayPorts },
1.43 jakob 268: { "subsystem", sSubsystem },
1.46 markus 269: { "maxstartups", sMaxStartups },
1.57 markus 270: { "banner", sBanner },
1.25 markus 271: { NULL, 0 }
1.1 deraadt 272: };
273:
1.27 markus 274: /*
275: * Returns the number of the token pointed to by cp of length len. Never
276: * returns if the token is not known.
277: */
1.1 deraadt 278:
1.34 markus 279: static ServerOpCodes
1.25 markus 280: parse_token(const char *cp, const char *filename,
281: int linenum)
1.1 deraadt 282: {
1.55 markus 283: u_int i;
1.1 deraadt 284:
1.25 markus 285: for (i = 0; keywords[i].name; i++)
1.28 markus 286: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 287: return keywords[i].opcode;
288:
289: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
290: filename, linenum, cp);
291: return sBadOption;
1.1 deraadt 292: }
293:
1.29 markus 294: /*
295: * add listen address
296: */
1.34 markus 297: void
1.29 markus 298: add_listen_addr(ServerOptions *options, char *addr)
299: {
300: struct addrinfo hints, *ai, *aitop;
301: char strport[NI_MAXSERV];
302: int gaierr;
303: int i;
304:
305: if (options->num_ports == 0)
306: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
307: for (i = 0; i < options->num_ports; i++) {
308: memset(&hints, 0, sizeof(hints));
309: hints.ai_family = IPv4or6;
310: hints.ai_socktype = SOCK_STREAM;
311: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
312: snprintf(strport, sizeof strport, "%d", options->ports[i]);
313: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
314: fatal("bad addr or host: %s (%s)\n",
315: addr ? addr : "<NULL>",
316: gai_strerror(gaierr));
317: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
318: ;
319: ai->ai_next = options->listen_addrs;
320: options->listen_addrs = aitop;
321: }
322: }
323:
1.1 deraadt 324: /* Reads the server configuration file. */
325:
1.34 markus 326: void
1.25 markus 327: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 328: {
1.25 markus 329: FILE *f;
330: char line[1024];
1.47 ho 331: char *cp, **charptr, *arg;
1.25 markus 332: int linenum, *intptr, value;
333: int bad_options = 0;
334: ServerOpCodes opcode;
1.43 jakob 335: int i;
1.25 markus 336:
337: f = fopen(filename, "r");
338: if (!f) {
339: perror(filename);
1.1 deraadt 340: exit(1);
1.25 markus 341: }
342: linenum = 0;
343: while (fgets(line, sizeof(line), f)) {
344: linenum++;
1.48 provos 345: cp = line;
346: arg = strdelim(&cp);
347: /* Ignore leading whitespace */
348: if (*arg == '\0')
1.49 markus 349: arg = strdelim(&cp);
1.61 djm 350: if (!arg || !*arg || *arg == '#')
1.25 markus 351: continue;
1.54 markus 352: intptr = NULL;
353: charptr = NULL;
1.47 ho 354: opcode = parse_token(arg, filename, linenum);
1.25 markus 355: switch (opcode) {
356: case sBadOption:
357: bad_options++;
358: continue;
359: case sPort:
1.29 markus 360: /* ignore ports from configfile if cmdline specifies ports */
361: if (options->ports_from_cmdline)
362: continue;
363: if (options->listen_addrs != NULL)
364: fatal("%s line %d: ports must be specified before "
365: "ListenAdress.\n", filename, linenum);
366: if (options->num_ports >= MAX_PORTS)
367: fatal("%s line %d: too many ports.\n",
1.34 markus 368: filename, linenum);
1.48 provos 369: arg = strdelim(&cp);
1.47 ho 370: if (!arg || *arg == '\0')
1.29 markus 371: fatal("%s line %d: missing port number.\n",
372: filename, linenum);
1.47 ho 373: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 374: break;
375:
376: case sServerKeyBits:
377: intptr = &options->server_key_bits;
1.25 markus 378: parse_int:
1.48 provos 379: arg = strdelim(&cp);
1.47 ho 380: if (!arg || *arg == '\0') {
1.25 markus 381: fprintf(stderr, "%s line %d: missing integer value.\n",
382: filename, linenum);
383: exit(1);
384: }
1.47 ho 385: value = atoi(arg);
1.25 markus 386: if (*intptr == -1)
387: *intptr = value;
388: break;
389:
390: case sLoginGraceTime:
391: intptr = &options->login_grace_time;
392: goto parse_int;
393:
394: case sKeyRegenerationTime:
395: intptr = &options->key_regeneration_time;
396: goto parse_int;
397:
398: case sListenAddress:
1.48 provos 399: arg = strdelim(&cp);
1.47 ho 400: if (!arg || *arg == '\0')
1.29 markus 401: fatal("%s line %d: missing inet addr.\n",
402: filename, linenum);
1.47 ho 403: add_listen_addr(options, arg);
1.25 markus 404: break;
405:
406: case sHostKeyFile:
1.54 markus 407: intptr = &options->num_host_key_files;
408: if (*intptr >= MAX_HOSTKEYS) {
409: fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n",
410: filename, linenum, MAX_HOSTKEYS);
411: exit(1);
412: }
413: charptr = &options->host_key_files[*intptr];
1.42 markus 414: parse_filename:
1.48 provos 415: arg = strdelim(&cp);
1.47 ho 416: if (!arg || *arg == '\0') {
1.25 markus 417: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 418: filename, linenum);
419: exit(1);
420: }
1.54 markus 421: if (*charptr == NULL) {
1.47 ho 422: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 423: /* increase optional counter */
424: if (intptr != NULL)
425: *intptr = *intptr + 1;
426: }
1.36 markus 427: break;
428:
429: case sPidFile:
430: charptr = &options->pid_file;
1.42 markus 431: goto parse_filename;
1.25 markus 432:
433: case sRandomSeedFile:
434: fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n",
435: filename, linenum);
1.48 provos 436: arg = strdelim(&cp);
1.25 markus 437: break;
438:
439: case sPermitRootLogin:
440: intptr = &options->permit_root_login;
1.48 provos 441: arg = strdelim(&cp);
1.47 ho 442: if (!arg || *arg == '\0') {
1.25 markus 443: fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
444: filename, linenum);
445: exit(1);
446: }
1.47 ho 447: if (strcmp(arg, "without-password") == 0)
1.25 markus 448: value = 2;
1.47 ho 449: else if (strcmp(arg, "yes") == 0)
1.25 markus 450: value = 1;
1.47 ho 451: else if (strcmp(arg, "no") == 0)
1.25 markus 452: value = 0;
453: else {
454: fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n",
1.47 ho 455: filename, linenum, arg);
1.25 markus 456: exit(1);
457: }
458: if (*intptr == -1)
459: *intptr = value;
460: break;
461:
462: case sIgnoreRhosts:
463: intptr = &options->ignore_rhosts;
464: parse_flag:
1.48 provos 465: arg = strdelim(&cp);
1.47 ho 466: if (!arg || *arg == '\0') {
1.25 markus 467: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
468: filename, linenum);
469: exit(1);
470: }
1.47 ho 471: if (strcmp(arg, "yes") == 0)
1.25 markus 472: value = 1;
1.47 ho 473: else if (strcmp(arg, "no") == 0)
1.25 markus 474: value = 0;
475: else {
476: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 477: filename, linenum, arg);
1.25 markus 478: exit(1);
479: }
480: if (*intptr == -1)
481: *intptr = value;
482: break;
483:
484: case sIgnoreUserKnownHosts:
485: intptr = &options->ignore_user_known_hosts;
1.31 markus 486: goto parse_flag;
1.25 markus 487:
488: case sRhostsAuthentication:
489: intptr = &options->rhosts_authentication;
490: goto parse_flag;
491:
492: case sRhostsRSAAuthentication:
493: intptr = &options->rhosts_rsa_authentication;
494: goto parse_flag;
495:
496: case sRSAAuthentication:
497: intptr = &options->rsa_authentication;
1.39 markus 498: goto parse_flag;
499:
1.54 markus 500: case sPubkeyAuthentication:
501: intptr = &options->pubkey_authentication;
1.25 markus 502: goto parse_flag;
503:
1.1 deraadt 504: #ifdef KRB4
1.25 markus 505: case sKerberosAuthentication:
506: intptr = &options->kerberos_authentication;
507: goto parse_flag;
508:
509: case sKerberosOrLocalPasswd:
510: intptr = &options->kerberos_or_local_passwd;
511: goto parse_flag;
512:
513: case sKerberosTicketCleanup:
514: intptr = &options->kerberos_ticket_cleanup;
515: goto parse_flag;
1.1 deraadt 516: #endif
1.25 markus 517:
1.4 dugsong 518: #ifdef AFS
1.25 markus 519: case sKerberosTgtPassing:
520: intptr = &options->kerberos_tgt_passing;
521: goto parse_flag;
522:
523: case sAFSTokenPassing:
524: intptr = &options->afs_token_passing;
525: goto parse_flag;
526: #endif
527:
528: case sPasswordAuthentication:
529: intptr = &options->password_authentication;
1.52 markus 530: goto parse_flag;
531:
532: case sKbdInteractiveAuthentication:
533: intptr = &options->kbd_interactive_authentication;
1.25 markus 534: goto parse_flag;
535:
536: case sCheckMail:
537: intptr = &options->check_mail;
538: goto parse_flag;
1.10 markus 539:
1.63 ! markus 540: case sChallengeResponseAuthentication:
! 541: intptr = &options->challenge_reponse_authentication;
1.25 markus 542: goto parse_flag;
543:
544: case sPrintMotd:
545: intptr = &options->print_motd;
546: goto parse_flag;
547:
548: case sX11Forwarding:
549: intptr = &options->x11_forwarding;
550: goto parse_flag;
551:
552: case sX11DisplayOffset:
553: intptr = &options->x11_display_offset;
554: goto parse_int;
555:
1.42 markus 556: case sXAuthLocation:
557: charptr = &options->xauth_location;
558: goto parse_filename;
559:
1.25 markus 560: case sStrictModes:
561: intptr = &options->strict_modes;
562: goto parse_flag;
563:
564: case sKeepAlives:
565: intptr = &options->keepalives;
566: goto parse_flag;
567:
568: case sEmptyPasswd:
569: intptr = &options->permit_empty_passwd;
570: goto parse_flag;
571:
572: case sUseLogin:
573: intptr = &options->use_login;
1.38 markus 574: goto parse_flag;
575:
576: case sGatewayPorts:
577: intptr = &options->gateway_ports;
1.25 markus 578: goto parse_flag;
579:
580: case sLogFacility:
581: intptr = (int *) &options->log_facility;
1.48 provos 582: arg = strdelim(&cp);
1.47 ho 583: value = log_facility_number(arg);
1.25 markus 584: if (value == (SyslogFacility) - 1)
585: fatal("%.200s line %d: unsupported log facility '%s'\n",
1.47 ho 586: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 587: if (*intptr == -1)
588: *intptr = (SyslogFacility) value;
589: break;
590:
591: case sLogLevel:
592: intptr = (int *) &options->log_level;
1.48 provos 593: arg = strdelim(&cp);
1.47 ho 594: value = log_level_number(arg);
1.25 markus 595: if (value == (LogLevel) - 1)
596: fatal("%.200s line %d: unsupported log level '%s'\n",
1.47 ho 597: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 598: if (*intptr == -1)
599: *intptr = (LogLevel) value;
600: break;
1.53 markus 601:
602: case sAllowTcpForwarding:
603: intptr = &options->allow_tcp_forwarding;
604: goto parse_flag;
1.25 markus 605:
606: case sAllowUsers:
1.48 provos 607: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 608: if (options->num_allow_users >= MAX_ALLOW_USERS)
609: fatal("%s line %d: too many allow users.\n",
610: filename, linenum);
1.47 ho 611: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 612: }
613: break;
614:
615: case sDenyUsers:
1.48 provos 616: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 617: if (options->num_deny_users >= MAX_DENY_USERS)
618: fatal( "%s line %d: too many deny users.\n",
619: filename, linenum);
1.47 ho 620: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 621: }
622: break;
623:
624: case sAllowGroups:
1.48 provos 625: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 626: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
627: fatal("%s line %d: too many allow groups.\n",
628: filename, linenum);
1.47 ho 629: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 630: }
631: break;
632:
633: case sDenyGroups:
1.48 provos 634: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 635: if (options->num_deny_groups >= MAX_DENY_GROUPS)
636: fatal("%s line %d: too many deny groups.\n",
637: filename, linenum);
1.47 ho 638: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 639: }
1.33 markus 640: break;
641:
642: case sCiphers:
1.48 provos 643: arg = strdelim(&cp);
1.47 ho 644: if (!arg || *arg == '\0')
1.41 markus 645: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 646: if (!ciphers_valid(arg))
1.40 markus 647: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 648: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 649: if (options->ciphers == NULL)
1.47 ho 650: options->ciphers = xstrdup(arg);
1.33 markus 651: break;
652:
653: case sProtocol:
654: intptr = &options->protocol;
1.48 provos 655: arg = strdelim(&cp);
1.47 ho 656: if (!arg || *arg == '\0')
1.41 markus 657: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 658: value = proto_spec(arg);
1.33 markus 659: if (value == SSH_PROTO_UNKNOWN)
660: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 661: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 662: if (*intptr == SSH_PROTO_UNKNOWN)
663: *intptr = value;
1.43 jakob 664: break;
665:
666: case sSubsystem:
667: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
668: fatal("%s line %d: too many subsystems defined.",
669: filename, linenum);
670: }
1.48 provos 671: arg = strdelim(&cp);
1.47 ho 672: if (!arg || *arg == '\0')
1.43 jakob 673: fatal("%s line %d: Missing subsystem name.",
674: filename, linenum);
675: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 676: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 677: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 678: filename, linenum, arg);
679: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 680: arg = strdelim(&cp);
1.47 ho 681: if (!arg || *arg == '\0')
1.43 jakob 682: fatal("%s line %d: Missing subsystem command.",
683: filename, linenum);
1.47 ho 684: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 685: options->num_subsystems++;
1.25 markus 686: break;
1.46 markus 687:
688: case sMaxStartups:
1.50 markus 689: arg = strdelim(&cp);
690: if (!arg || *arg == '\0')
691: fatal("%s line %d: Missing MaxStartups spec.",
692: filename, linenum);
693: if (sscanf(arg, "%d:%d:%d",
694: &options->max_startups_begin,
695: &options->max_startups_rate,
696: &options->max_startups) == 3) {
697: if (options->max_startups_begin >
698: options->max_startups ||
699: options->max_startups_rate > 100 ||
700: options->max_startups_rate < 1)
701: fatal("%s line %d: Illegal MaxStartups spec.",
702: filename, linenum);
703: break;
704: }
1.46 markus 705: intptr = &options->max_startups;
706: goto parse_int;
1.25 markus 707:
1.57 markus 708: case sBanner:
709: charptr = &options->banner;
710: goto parse_filename;
711:
1.25 markus 712: default:
713: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 714: filename, linenum, arg, opcode);
1.25 markus 715: exit(1);
1.13 markus 716: }
1.48 provos 717: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.47 ho 718: fprintf(stderr,
719: "%s line %d: garbage at end of line; \"%.200s\".\n",
720: filename, linenum, arg);
1.25 markus 721: exit(1);
1.13 markus 722: }
1.1 deraadt 723: }
1.25 markus 724: fclose(f);
725: if (bad_options > 0) {
726: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
727: filename, bad_options);
728: exit(1);
1.1 deraadt 729: }
730: }
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