Annotation of src/usr.bin/ssh/servconf.c, Revision 1.70
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"
1.70 ! millert 13: RCSID("$OpenBSD: servconf.c,v 1.69 2001/03/04 11:16:06 stevesk Exp $");
1.62 markus 14:
15: #ifdef KRB4
16: #include <krb.h>
17: #endif
18: #ifdef AFS
19: #include <kafs.h>
20: #endif
1.1 deraadt 21:
22: #include "ssh.h"
1.62 markus 23: #include "log.h"
1.1 deraadt 24: #include "servconf.h"
25: #include "xmalloc.h"
1.33 markus 26: #include "compat.h"
1.60 markus 27: #include "pathnames.h"
1.62 markus 28: #include "tildexpand.h"
29: #include "misc.h"
30: #include "cipher.h"
1.66 markus 31: #include "kex.h"
32: #include "mac.h"
1.1 deraadt 33:
1.29 markus 34: /* add listen address */
35: void add_listen_addr(ServerOptions *options, char *addr);
36:
1.62 markus 37: /* AF_UNSPEC or AF_INET or AF_INET6 */
38: extern int IPv4or6;
39:
1.1 deraadt 40: /* Initializes the server options to their default values. */
41:
1.34 markus 42: void
1.25 markus 43: initialize_server_options(ServerOptions *options)
1.1 deraadt 44: {
1.25 markus 45: memset(options, 0, sizeof(*options));
1.29 markus 46: options->num_ports = 0;
47: options->ports_from_cmdline = 0;
48: options->listen_addrs = NULL;
1.54 markus 49: options->num_host_key_files = 0;
1.36 markus 50: options->pid_file = NULL;
1.25 markus 51: options->server_key_bits = -1;
52: options->login_grace_time = -1;
53: options->key_regeneration_time = -1;
1.67 markus 54: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 55: options->ignore_rhosts = -1;
56: options->ignore_user_known_hosts = -1;
57: options->print_motd = -1;
58: options->check_mail = -1;
59: options->x11_forwarding = -1;
60: options->x11_display_offset = -1;
1.42 markus 61: options->xauth_location = NULL;
1.25 markus 62: options->strict_modes = -1;
63: options->keepalives = -1;
64: options->log_facility = (SyslogFacility) - 1;
65: options->log_level = (LogLevel) - 1;
66: options->rhosts_authentication = -1;
67: options->rhosts_rsa_authentication = -1;
68: options->rsa_authentication = -1;
1.54 markus 69: options->pubkey_authentication = -1;
1.1 deraadt 70: #ifdef KRB4
1.25 markus 71: options->kerberos_authentication = -1;
72: options->kerberos_or_local_passwd = -1;
73: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 74: #endif
1.4 dugsong 75: #ifdef AFS
1.25 markus 76: options->kerberos_tgt_passing = -1;
77: options->afs_token_passing = -1;
1.1 deraadt 78: #endif
1.25 markus 79: options->password_authentication = -1;
1.52 markus 80: options->kbd_interactive_authentication = -1;
1.63 markus 81: options->challenge_reponse_authentication = -1;
1.25 markus 82: options->permit_empty_passwd = -1;
83: options->use_login = -1;
1.53 markus 84: options->allow_tcp_forwarding = -1;
1.25 markus 85: options->num_allow_users = 0;
86: options->num_deny_users = 0;
87: options->num_allow_groups = 0;
88: options->num_deny_groups = 0;
1.33 markus 89: options->ciphers = NULL;
1.66 markus 90: options->macs = NULL;
1.33 markus 91: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 92: options->gateway_ports = -1;
1.43 jakob 93: options->num_subsystems = 0;
1.50 markus 94: options->max_startups_begin = -1;
95: options->max_startups_rate = -1;
1.46 markus 96: options->max_startups = -1;
1.57 markus 97: options->banner = NULL;
1.64 markus 98: options->reverse_mapping_check = -1;
1.1 deraadt 99: }
100:
1.34 markus 101: void
1.25 markus 102: fill_default_server_options(ServerOptions *options)
1.1 deraadt 103: {
1.54 markus 104: if (options->protocol == SSH_PROTO_UNKNOWN)
105: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
106: if (options->num_host_key_files == 0) {
107: /* fill default hostkeys for protocols */
108: if (options->protocol & SSH_PROTO_1)
1.60 markus 109: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 110: if (options->protocol & SSH_PROTO_2)
1.60 markus 111: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 112: }
1.29 markus 113: if (options->num_ports == 0)
114: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
115: if (options->listen_addrs == NULL)
116: add_listen_addr(options, NULL);
1.36 markus 117: if (options->pid_file == NULL)
1.60 markus 118: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 119: if (options->server_key_bits == -1)
120: options->server_key_bits = 768;
121: if (options->login_grace_time == -1)
122: options->login_grace_time = 600;
123: if (options->key_regeneration_time == -1)
124: options->key_regeneration_time = 3600;
1.67 markus 125: if (options->permit_root_login == PERMIT_NOT_SET)
126: options->permit_root_login = PERMIT_YES;
1.25 markus 127: if (options->ignore_rhosts == -1)
1.30 markus 128: options->ignore_rhosts = 1;
1.25 markus 129: if (options->ignore_user_known_hosts == -1)
130: options->ignore_user_known_hosts = 0;
131: if (options->check_mail == -1)
132: options->check_mail = 0;
133: if (options->print_motd == -1)
134: options->print_motd = 1;
135: if (options->x11_forwarding == -1)
1.30 markus 136: options->x11_forwarding = 0;
1.25 markus 137: if (options->x11_display_offset == -1)
1.30 markus 138: options->x11_display_offset = 10;
1.42 markus 139: #ifdef XAUTH_PATH
140: if (options->xauth_location == NULL)
141: options->xauth_location = XAUTH_PATH;
142: #endif /* XAUTH_PATH */
1.25 markus 143: if (options->strict_modes == -1)
144: options->strict_modes = 1;
145: if (options->keepalives == -1)
146: options->keepalives = 1;
147: if (options->log_facility == (SyslogFacility) (-1))
148: options->log_facility = SYSLOG_FACILITY_AUTH;
149: if (options->log_level == (LogLevel) (-1))
1.58 markus 150: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 151: if (options->rhosts_authentication == -1)
152: options->rhosts_authentication = 0;
153: if (options->rhosts_rsa_authentication == -1)
1.30 markus 154: options->rhosts_rsa_authentication = 0;
1.25 markus 155: if (options->rsa_authentication == -1)
156: options->rsa_authentication = 1;
1.54 markus 157: if (options->pubkey_authentication == -1)
158: options->pubkey_authentication = 1;
1.1 deraadt 159: #ifdef KRB4
1.25 markus 160: if (options->kerberos_authentication == -1)
161: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
162: if (options->kerberos_or_local_passwd == -1)
163: options->kerberos_or_local_passwd = 1;
164: if (options->kerberos_ticket_cleanup == -1)
165: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 166: #endif /* KRB4 */
167: #ifdef AFS
1.25 markus 168: if (options->kerberos_tgt_passing == -1)
169: options->kerberos_tgt_passing = 0;
170: if (options->afs_token_passing == -1)
171: options->afs_token_passing = k_hasafs();
1.4 dugsong 172: #endif /* AFS */
1.25 markus 173: if (options->password_authentication == -1)
174: options->password_authentication = 1;
1.52 markus 175: if (options->kbd_interactive_authentication == -1)
176: options->kbd_interactive_authentication = 0;
1.63 markus 177: if (options->challenge_reponse_authentication == -1)
178: options->challenge_reponse_authentication = 1;
1.25 markus 179: if (options->permit_empty_passwd == -1)
1.30 markus 180: options->permit_empty_passwd = 0;
1.25 markus 181: if (options->use_login == -1)
182: options->use_login = 0;
1.53 markus 183: if (options->allow_tcp_forwarding == -1)
184: options->allow_tcp_forwarding = 1;
1.38 markus 185: if (options->gateway_ports == -1)
186: options->gateway_ports = 0;
1.46 markus 187: if (options->max_startups == -1)
188: options->max_startups = 10;
1.50 markus 189: if (options->max_startups_rate == -1)
190: options->max_startups_rate = 100; /* 100% */
191: if (options->max_startups_begin == -1)
192: options->max_startups_begin = options->max_startups;
1.64 markus 193: if (options->reverse_mapping_check == -1)
194: options->reverse_mapping_check = 0;
1.1 deraadt 195: }
196:
197: /* Keyword tokens. */
1.25 markus 198: typedef enum {
199: sBadOption, /* == unknown option */
200: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
201: sPermitRootLogin, sLogFacility, sLogLevel,
202: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 203: #ifdef KRB4
1.25 markus 204: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 205: #endif
206: #ifdef AFS
1.25 markus 207: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 208: #endif
1.63 markus 209: sChallengeResponseAuthentication,
1.52 markus 210: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.25 markus 211: sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset,
1.69 stevesk 212: sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail,
1.53 markus 213: sUseLogin, sAllowTcpForwarding,
214: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 215: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.54 markus 216: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.64 markus 217: sBanner, sReverseMappingCheck
1.1 deraadt 218: } ServerOpCodes;
219:
220: /* Textual representation of the tokens. */
1.25 markus 221: static struct {
222: const char *name;
223: ServerOpCodes opcode;
224: } keywords[] = {
225: { "port", sPort },
226: { "hostkey", sHostKeyFile },
1.54 markus 227: { "hostdsakey", sHostKeyFile }, /* alias */
1.65 stevesk 228: { "pidfile", sPidFile },
1.25 markus 229: { "serverkeybits", sServerKeyBits },
230: { "logingracetime", sLoginGraceTime },
231: { "keyregenerationinterval", sKeyRegenerationTime },
232: { "permitrootlogin", sPermitRootLogin },
233: { "syslogfacility", sLogFacility },
234: { "loglevel", sLogLevel },
235: { "rhostsauthentication", sRhostsAuthentication },
236: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
237: { "rsaauthentication", sRSAAuthentication },
1.54 markus 238: { "pubkeyauthentication", sPubkeyAuthentication },
239: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 240: #ifdef KRB4
1.25 markus 241: { "kerberosauthentication", sKerberosAuthentication },
242: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
243: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 244: #endif
1.4 dugsong 245: #ifdef AFS
1.25 markus 246: { "kerberostgtpassing", sKerberosTgtPassing },
247: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 248: #endif
1.25 markus 249: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 250: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.63 markus 251: { "challengeresponseauthentication", sChallengeResponseAuthentication },
252: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.25 markus 253: { "checkmail", sCheckMail },
254: { "listenaddress", sListenAddress },
255: { "printmotd", sPrintMotd },
256: { "ignorerhosts", sIgnoreRhosts },
257: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
258: { "x11forwarding", sX11Forwarding },
259: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 260: { "xauthlocation", sXAuthLocation },
1.25 markus 261: { "strictmodes", sStrictModes },
262: { "permitemptypasswords", sEmptyPasswd },
263: { "uselogin", sUseLogin },
264: { "keepalive", sKeepAlives },
1.53 markus 265: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 266: { "allowusers", sAllowUsers },
267: { "denyusers", sDenyUsers },
268: { "allowgroups", sAllowGroups },
269: { "denygroups", sDenyGroups },
1.33 markus 270: { "ciphers", sCiphers },
1.66 markus 271: { "macs", sMacs },
1.33 markus 272: { "protocol", sProtocol },
1.38 markus 273: { "gatewayports", sGatewayPorts },
1.43 jakob 274: { "subsystem", sSubsystem },
1.46 markus 275: { "maxstartups", sMaxStartups },
1.57 markus 276: { "banner", sBanner },
1.64 markus 277: { "reversemappingcheck", sReverseMappingCheck },
1.25 markus 278: { NULL, 0 }
1.1 deraadt 279: };
280:
1.27 markus 281: /*
282: * Returns the number of the token pointed to by cp of length len. Never
283: * returns if the token is not known.
284: */
1.1 deraadt 285:
1.34 markus 286: static ServerOpCodes
1.25 markus 287: parse_token(const char *cp, const char *filename,
288: int linenum)
1.1 deraadt 289: {
1.55 markus 290: u_int i;
1.1 deraadt 291:
1.25 markus 292: for (i = 0; keywords[i].name; i++)
1.28 markus 293: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 294: return keywords[i].opcode;
295:
296: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
297: filename, linenum, cp);
298: return sBadOption;
1.1 deraadt 299: }
300:
1.29 markus 301: /*
302: * add listen address
303: */
1.34 markus 304: void
1.29 markus 305: add_listen_addr(ServerOptions *options, char *addr)
306: {
307: struct addrinfo hints, *ai, *aitop;
308: char strport[NI_MAXSERV];
309: int gaierr;
310: int i;
311:
312: if (options->num_ports == 0)
313: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
314: for (i = 0; i < options->num_ports; i++) {
315: memset(&hints, 0, sizeof(hints));
316: hints.ai_family = IPv4or6;
317: hints.ai_socktype = SOCK_STREAM;
318: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
319: snprintf(strport, sizeof strport, "%d", options->ports[i]);
320: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
1.70 ! millert 321: fatal("bad addr or host: %s (%s)",
1.29 markus 322: addr ? addr : "<NULL>",
323: gai_strerror(gaierr));
324: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
325: ;
326: ai->ai_next = options->listen_addrs;
327: options->listen_addrs = aitop;
328: }
329: }
330:
1.1 deraadt 331: /* Reads the server configuration file. */
332:
1.34 markus 333: void
1.25 markus 334: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 335: {
1.25 markus 336: FILE *f;
337: char line[1024];
1.47 ho 338: char *cp, **charptr, *arg;
1.25 markus 339: int linenum, *intptr, value;
340: int bad_options = 0;
341: ServerOpCodes opcode;
1.43 jakob 342: int i;
1.25 markus 343:
344: f = fopen(filename, "r");
345: if (!f) {
346: perror(filename);
1.1 deraadt 347: exit(1);
1.25 markus 348: }
349: linenum = 0;
350: while (fgets(line, sizeof(line), f)) {
351: linenum++;
1.48 provos 352: cp = line;
353: arg = strdelim(&cp);
354: /* Ignore leading whitespace */
355: if (*arg == '\0')
1.49 markus 356: arg = strdelim(&cp);
1.61 djm 357: if (!arg || !*arg || *arg == '#')
1.25 markus 358: continue;
1.54 markus 359: intptr = NULL;
360: charptr = NULL;
1.47 ho 361: opcode = parse_token(arg, filename, linenum);
1.25 markus 362: switch (opcode) {
363: case sBadOption:
364: bad_options++;
365: continue;
366: case sPort:
1.29 markus 367: /* ignore ports from configfile if cmdline specifies ports */
368: if (options->ports_from_cmdline)
369: continue;
370: if (options->listen_addrs != NULL)
371: fatal("%s line %d: ports must be specified before "
372: "ListenAdress.\n", filename, linenum);
373: if (options->num_ports >= MAX_PORTS)
1.70 ! millert 374: fatal("%s line %d: too many ports.",
1.34 markus 375: filename, linenum);
1.48 provos 376: arg = strdelim(&cp);
1.47 ho 377: if (!arg || *arg == '\0')
1.70 ! millert 378: fatal("%s line %d: missing port number.",
1.29 markus 379: filename, linenum);
1.47 ho 380: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 381: break;
382:
383: case sServerKeyBits:
384: intptr = &options->server_key_bits;
1.25 markus 385: parse_int:
1.48 provos 386: arg = strdelim(&cp);
1.47 ho 387: if (!arg || *arg == '\0') {
1.25 markus 388: fprintf(stderr, "%s line %d: missing integer value.\n",
389: filename, linenum);
390: exit(1);
391: }
1.47 ho 392: value = atoi(arg);
1.25 markus 393: if (*intptr == -1)
394: *intptr = value;
395: break;
396:
397: case sLoginGraceTime:
398: intptr = &options->login_grace_time;
399: goto parse_int;
400:
401: case sKeyRegenerationTime:
402: intptr = &options->key_regeneration_time;
403: goto parse_int;
404:
405: case sListenAddress:
1.48 provos 406: arg = strdelim(&cp);
1.47 ho 407: if (!arg || *arg == '\0')
1.70 ! millert 408: fatal("%s line %d: missing inet addr.",
1.29 markus 409: filename, linenum);
1.47 ho 410: add_listen_addr(options, arg);
1.25 markus 411: break;
412:
413: case sHostKeyFile:
1.54 markus 414: intptr = &options->num_host_key_files;
415: if (*intptr >= MAX_HOSTKEYS) {
1.68 deraadt 416: fprintf(stderr,
417: "%s line %d: too many host keys specified (max %d).\n",
1.54 markus 418: filename, linenum, MAX_HOSTKEYS);
419: exit(1);
420: }
421: charptr = &options->host_key_files[*intptr];
1.42 markus 422: parse_filename:
1.48 provos 423: arg = strdelim(&cp);
1.47 ho 424: if (!arg || *arg == '\0') {
1.25 markus 425: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 426: filename, linenum);
427: exit(1);
428: }
1.54 markus 429: if (*charptr == NULL) {
1.47 ho 430: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 431: /* increase optional counter */
432: if (intptr != NULL)
433: *intptr = *intptr + 1;
434: }
1.36 markus 435: break;
436:
437: case sPidFile:
438: charptr = &options->pid_file;
1.42 markus 439: goto parse_filename;
1.25 markus 440:
441: case sPermitRootLogin:
442: intptr = &options->permit_root_login;
1.48 provos 443: arg = strdelim(&cp);
1.47 ho 444: if (!arg || *arg == '\0') {
1.25 markus 445: fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
446: filename, linenum);
447: exit(1);
448: }
1.47 ho 449: if (strcmp(arg, "without-password") == 0)
1.67 markus 450: value = PERMIT_NO_PASSWD;
451: else if (strcmp(arg, "forced-commands-only") == 0)
452: value = PERMIT_FORCED_ONLY;
1.47 ho 453: else if (strcmp(arg, "yes") == 0)
1.67 markus 454: value = PERMIT_YES;
1.47 ho 455: else if (strcmp(arg, "no") == 0)
1.67 markus 456: value = PERMIT_NO;
1.25 markus 457: else {
1.67 markus 458: fprintf(stderr, "%s line %d: Bad yes/"
459: "without-password/forced-commands-only/no "
460: "argument: %s\n", filename, linenum, arg);
1.25 markus 461: exit(1);
462: }
463: if (*intptr == -1)
464: *intptr = value;
465: break;
466:
467: case sIgnoreRhosts:
468: intptr = &options->ignore_rhosts;
469: parse_flag:
1.48 provos 470: arg = strdelim(&cp);
1.47 ho 471: if (!arg || *arg == '\0') {
1.25 markus 472: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
473: filename, linenum);
474: exit(1);
475: }
1.47 ho 476: if (strcmp(arg, "yes") == 0)
1.25 markus 477: value = 1;
1.47 ho 478: else if (strcmp(arg, "no") == 0)
1.25 markus 479: value = 0;
480: else {
481: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 482: filename, linenum, arg);
1.25 markus 483: exit(1);
484: }
485: if (*intptr == -1)
486: *intptr = value;
487: break;
488:
489: case sIgnoreUserKnownHosts:
490: intptr = &options->ignore_user_known_hosts;
1.31 markus 491: goto parse_flag;
1.25 markus 492:
493: case sRhostsAuthentication:
494: intptr = &options->rhosts_authentication;
495: goto parse_flag;
496:
497: case sRhostsRSAAuthentication:
498: intptr = &options->rhosts_rsa_authentication;
499: goto parse_flag;
500:
501: case sRSAAuthentication:
502: intptr = &options->rsa_authentication;
1.39 markus 503: goto parse_flag;
504:
1.54 markus 505: case sPubkeyAuthentication:
506: intptr = &options->pubkey_authentication;
1.25 markus 507: goto parse_flag;
508:
1.1 deraadt 509: #ifdef KRB4
1.25 markus 510: case sKerberosAuthentication:
511: intptr = &options->kerberos_authentication;
512: goto parse_flag;
513:
514: case sKerberosOrLocalPasswd:
515: intptr = &options->kerberos_or_local_passwd;
516: goto parse_flag;
517:
518: case sKerberosTicketCleanup:
519: intptr = &options->kerberos_ticket_cleanup;
520: goto parse_flag;
1.1 deraadt 521: #endif
1.25 markus 522:
1.4 dugsong 523: #ifdef AFS
1.25 markus 524: case sKerberosTgtPassing:
525: intptr = &options->kerberos_tgt_passing;
526: goto parse_flag;
527:
528: case sAFSTokenPassing:
529: intptr = &options->afs_token_passing;
530: goto parse_flag;
531: #endif
532:
533: case sPasswordAuthentication:
534: intptr = &options->password_authentication;
1.52 markus 535: goto parse_flag;
536:
537: case sKbdInteractiveAuthentication:
538: intptr = &options->kbd_interactive_authentication;
1.25 markus 539: goto parse_flag;
540:
541: case sCheckMail:
542: intptr = &options->check_mail;
543: goto parse_flag;
1.10 markus 544:
1.63 markus 545: case sChallengeResponseAuthentication:
546: intptr = &options->challenge_reponse_authentication;
1.25 markus 547: goto parse_flag;
548:
549: case sPrintMotd:
550: intptr = &options->print_motd;
551: goto parse_flag;
552:
553: case sX11Forwarding:
554: intptr = &options->x11_forwarding;
555: goto parse_flag;
556:
557: case sX11DisplayOffset:
558: intptr = &options->x11_display_offset;
559: goto parse_int;
560:
1.42 markus 561: case sXAuthLocation:
562: charptr = &options->xauth_location;
563: goto parse_filename;
1.65 stevesk 564:
1.25 markus 565: case sStrictModes:
566: intptr = &options->strict_modes;
567: goto parse_flag;
568:
569: case sKeepAlives:
570: intptr = &options->keepalives;
571: goto parse_flag;
572:
573: case sEmptyPasswd:
574: intptr = &options->permit_empty_passwd;
575: goto parse_flag;
576:
577: case sUseLogin:
578: intptr = &options->use_login;
1.38 markus 579: goto parse_flag;
580:
581: case sGatewayPorts:
582: intptr = &options->gateway_ports;
1.64 markus 583: goto parse_flag;
584:
585: case sReverseMappingCheck:
586: intptr = &options->reverse_mapping_check;
1.25 markus 587: goto parse_flag;
588:
589: case sLogFacility:
590: intptr = (int *) &options->log_facility;
1.48 provos 591: arg = strdelim(&cp);
1.47 ho 592: value = log_facility_number(arg);
1.25 markus 593: if (value == (SyslogFacility) - 1)
1.70 ! millert 594: fatal("%.200s line %d: unsupported log facility '%s'",
1.47 ho 595: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 596: if (*intptr == -1)
597: *intptr = (SyslogFacility) value;
598: break;
599:
600: case sLogLevel:
601: intptr = (int *) &options->log_level;
1.48 provos 602: arg = strdelim(&cp);
1.47 ho 603: value = log_level_number(arg);
1.25 markus 604: if (value == (LogLevel) - 1)
1.70 ! millert 605: fatal("%.200s line %d: unsupported log level '%s'",
1.47 ho 606: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 607: if (*intptr == -1)
608: *intptr = (LogLevel) value;
609: break;
1.53 markus 610:
611: case sAllowTcpForwarding:
612: intptr = &options->allow_tcp_forwarding;
613: goto parse_flag;
1.25 markus 614:
615: case sAllowUsers:
1.48 provos 616: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 617: if (options->num_allow_users >= MAX_ALLOW_USERS)
1.70 ! millert 618: fatal("%s line %d: too many allow users.",
1.33 markus 619: filename, linenum);
1.47 ho 620: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 621: }
622: break;
623:
624: case sDenyUsers:
1.48 provos 625: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 626: if (options->num_deny_users >= MAX_DENY_USERS)
1.70 ! millert 627: fatal( "%s line %d: too many deny users.",
1.33 markus 628: filename, linenum);
1.47 ho 629: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 630: }
631: break;
632:
633: case sAllowGroups:
1.48 provos 634: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 635: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1.70 ! millert 636: fatal("%s line %d: too many allow groups.",
1.33 markus 637: filename, linenum);
1.47 ho 638: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 639: }
640: break;
641:
642: case sDenyGroups:
1.48 provos 643: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 644: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1.70 ! millert 645: fatal("%s line %d: too many deny groups.",
1.33 markus 646: filename, linenum);
1.47 ho 647: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 648: }
1.33 markus 649: break;
650:
651: case sCiphers:
1.48 provos 652: arg = strdelim(&cp);
1.47 ho 653: if (!arg || *arg == '\0')
1.41 markus 654: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 655: if (!ciphers_valid(arg))
1.40 markus 656: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 657: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 658: if (options->ciphers == NULL)
1.47 ho 659: options->ciphers = xstrdup(arg);
1.66 markus 660: break;
661:
662: case sMacs:
663: arg = strdelim(&cp);
664: if (!arg || *arg == '\0')
665: fatal("%s line %d: Missing argument.", filename, linenum);
666: if (!mac_valid(arg))
667: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
668: filename, linenum, arg ? arg : "<NONE>");
669: if (options->macs == NULL)
670: options->macs = xstrdup(arg);
1.33 markus 671: break;
672:
673: case sProtocol:
674: intptr = &options->protocol;
1.48 provos 675: arg = strdelim(&cp);
1.47 ho 676: if (!arg || *arg == '\0')
1.41 markus 677: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 678: value = proto_spec(arg);
1.33 markus 679: if (value == SSH_PROTO_UNKNOWN)
680: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 681: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 682: if (*intptr == SSH_PROTO_UNKNOWN)
683: *intptr = value;
1.43 jakob 684: break;
685:
686: case sSubsystem:
687: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
688: fatal("%s line %d: too many subsystems defined.",
689: filename, linenum);
690: }
1.48 provos 691: arg = strdelim(&cp);
1.47 ho 692: if (!arg || *arg == '\0')
1.43 jakob 693: fatal("%s line %d: Missing subsystem name.",
694: filename, linenum);
695: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 696: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 697: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 698: filename, linenum, arg);
699: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 700: arg = strdelim(&cp);
1.47 ho 701: if (!arg || *arg == '\0')
1.43 jakob 702: fatal("%s line %d: Missing subsystem command.",
703: filename, linenum);
1.47 ho 704: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 705: options->num_subsystems++;
1.25 markus 706: break;
1.46 markus 707:
708: case sMaxStartups:
1.50 markus 709: arg = strdelim(&cp);
710: if (!arg || *arg == '\0')
711: fatal("%s line %d: Missing MaxStartups spec.",
712: filename, linenum);
713: if (sscanf(arg, "%d:%d:%d",
714: &options->max_startups_begin,
715: &options->max_startups_rate,
716: &options->max_startups) == 3) {
717: if (options->max_startups_begin >
718: options->max_startups ||
719: options->max_startups_rate > 100 ||
720: options->max_startups_rate < 1)
721: fatal("%s line %d: Illegal MaxStartups spec.",
722: filename, linenum);
723: break;
724: }
1.46 markus 725: intptr = &options->max_startups;
726: goto parse_int;
1.25 markus 727:
1.57 markus 728: case sBanner:
729: charptr = &options->banner;
730: goto parse_filename;
1.65 stevesk 731:
1.25 markus 732: default:
733: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 734: filename, linenum, arg, opcode);
1.25 markus 735: exit(1);
1.13 markus 736: }
1.48 provos 737: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.65 stevesk 738: fprintf(stderr,
1.47 ho 739: "%s line %d: garbage at end of line; \"%.200s\".\n",
740: filename, linenum, arg);
1.25 markus 741: exit(1);
1.13 markus 742: }
1.1 deraadt 743: }
1.25 markus 744: fclose(f);
745: if (bad_options > 0) {
746: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
747: filename, bad_options);
748: exit(1);
1.1 deraadt 749: }
750: }
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