Annotation of src/usr.bin/ssh/servconf.c, Revision 1.75
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"
1.75 ! markus 13: RCSID("$OpenBSD: servconf.c,v 1.74 2001/04/06 22:25:25 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 */
1.74 stevesk 35: void add_listen_addr(ServerOptions *options, char *addr, char *port);
36: void add_one_listen_addr(ServerOptions *options, char *addr, u_short port);
1.29 markus 37:
1.62 markus 38: /* AF_UNSPEC or AF_INET or AF_INET6 */
39: extern int IPv4or6;
40:
1.1 deraadt 41: /* Initializes the server options to their default values. */
42:
1.34 markus 43: void
1.25 markus 44: initialize_server_options(ServerOptions *options)
1.1 deraadt 45: {
1.25 markus 46: memset(options, 0, sizeof(*options));
1.29 markus 47: options->num_ports = 0;
48: options->ports_from_cmdline = 0;
49: options->listen_addrs = NULL;
1.54 markus 50: options->num_host_key_files = 0;
1.36 markus 51: options->pid_file = NULL;
1.25 markus 52: options->server_key_bits = -1;
53: options->login_grace_time = -1;
54: options->key_regeneration_time = -1;
1.67 markus 55: options->permit_root_login = PERMIT_NOT_SET;
1.25 markus 56: options->ignore_rhosts = -1;
57: options->ignore_user_known_hosts = -1;
58: options->print_motd = -1;
1.72 stevesk 59: options->print_lastlog = -1;
1.25 markus 60: options->check_mail = -1;
61: options->x11_forwarding = -1;
62: options->x11_display_offset = -1;
1.42 markus 63: options->xauth_location = NULL;
1.25 markus 64: options->strict_modes = -1;
65: options->keepalives = -1;
66: options->log_facility = (SyslogFacility) - 1;
67: options->log_level = (LogLevel) - 1;
68: options->rhosts_authentication = -1;
69: options->rhosts_rsa_authentication = -1;
1.75 ! markus 70: options->hostbased_authentication = -1;
! 71: options->hostbased_uses_name_from_packet_only = -1;
1.25 markus 72: options->rsa_authentication = -1;
1.54 markus 73: options->pubkey_authentication = -1;
1.1 deraadt 74: #ifdef KRB4
1.25 markus 75: options->kerberos_authentication = -1;
76: options->kerberos_or_local_passwd = -1;
77: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 78: #endif
1.4 dugsong 79: #ifdef AFS
1.25 markus 80: options->kerberos_tgt_passing = -1;
81: options->afs_token_passing = -1;
1.1 deraadt 82: #endif
1.25 markus 83: options->password_authentication = -1;
1.52 markus 84: options->kbd_interactive_authentication = -1;
1.63 markus 85: options->challenge_reponse_authentication = -1;
1.25 markus 86: options->permit_empty_passwd = -1;
87: options->use_login = -1;
1.53 markus 88: options->allow_tcp_forwarding = -1;
1.25 markus 89: options->num_allow_users = 0;
90: options->num_deny_users = 0;
91: options->num_allow_groups = 0;
92: options->num_deny_groups = 0;
1.33 markus 93: options->ciphers = NULL;
1.66 markus 94: options->macs = NULL;
1.33 markus 95: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 96: options->gateway_ports = -1;
1.43 jakob 97: options->num_subsystems = 0;
1.50 markus 98: options->max_startups_begin = -1;
99: options->max_startups_rate = -1;
1.46 markus 100: options->max_startups = -1;
1.57 markus 101: options->banner = NULL;
1.64 markus 102: options->reverse_mapping_check = -1;
1.1 deraadt 103: }
104:
1.34 markus 105: void
1.25 markus 106: fill_default_server_options(ServerOptions *options)
1.1 deraadt 107: {
1.54 markus 108: if (options->protocol == SSH_PROTO_UNKNOWN)
109: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
110: if (options->num_host_key_files == 0) {
111: /* fill default hostkeys for protocols */
112: if (options->protocol & SSH_PROTO_1)
1.60 markus 113: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 114: if (options->protocol & SSH_PROTO_2)
1.60 markus 115: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 116: }
1.29 markus 117: if (options->num_ports == 0)
118: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
119: if (options->listen_addrs == NULL)
1.74 stevesk 120: add_listen_addr(options, NULL, NULL);
1.36 markus 121: if (options->pid_file == NULL)
1.60 markus 122: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 123: if (options->server_key_bits == -1)
124: options->server_key_bits = 768;
125: if (options->login_grace_time == -1)
126: options->login_grace_time = 600;
127: if (options->key_regeneration_time == -1)
128: options->key_regeneration_time = 3600;
1.67 markus 129: if (options->permit_root_login == PERMIT_NOT_SET)
130: options->permit_root_login = PERMIT_YES;
1.25 markus 131: if (options->ignore_rhosts == -1)
1.30 markus 132: options->ignore_rhosts = 1;
1.25 markus 133: if (options->ignore_user_known_hosts == -1)
134: options->ignore_user_known_hosts = 0;
135: if (options->check_mail == -1)
136: options->check_mail = 0;
137: if (options->print_motd == -1)
138: options->print_motd = 1;
1.72 stevesk 139: if (options->print_lastlog == -1)
140: options->print_lastlog = 1;
1.25 markus 141: if (options->x11_forwarding == -1)
1.30 markus 142: options->x11_forwarding = 0;
1.25 markus 143: if (options->x11_display_offset == -1)
1.30 markus 144: options->x11_display_offset = 10;
1.42 markus 145: #ifdef XAUTH_PATH
146: if (options->xauth_location == NULL)
147: options->xauth_location = XAUTH_PATH;
148: #endif /* XAUTH_PATH */
1.25 markus 149: if (options->strict_modes == -1)
150: options->strict_modes = 1;
151: if (options->keepalives == -1)
152: options->keepalives = 1;
153: if (options->log_facility == (SyslogFacility) (-1))
154: options->log_facility = SYSLOG_FACILITY_AUTH;
155: if (options->log_level == (LogLevel) (-1))
1.58 markus 156: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 157: if (options->rhosts_authentication == -1)
158: options->rhosts_authentication = 0;
159: if (options->rhosts_rsa_authentication == -1)
1.30 markus 160: options->rhosts_rsa_authentication = 0;
1.75 ! markus 161: if (options->hostbased_authentication == -1)
! 162: options->hostbased_authentication = 0;
! 163: if (options->hostbased_uses_name_from_packet_only == -1)
! 164: options->hostbased_uses_name_from_packet_only = 0;
1.25 markus 165: if (options->rsa_authentication == -1)
166: options->rsa_authentication = 1;
1.54 markus 167: if (options->pubkey_authentication == -1)
168: options->pubkey_authentication = 1;
1.1 deraadt 169: #ifdef KRB4
1.25 markus 170: if (options->kerberos_authentication == -1)
171: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
172: if (options->kerberos_or_local_passwd == -1)
173: options->kerberos_or_local_passwd = 1;
174: if (options->kerberos_ticket_cleanup == -1)
175: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 176: #endif /* KRB4 */
177: #ifdef AFS
1.25 markus 178: if (options->kerberos_tgt_passing == -1)
179: options->kerberos_tgt_passing = 0;
180: if (options->afs_token_passing == -1)
181: options->afs_token_passing = k_hasafs();
1.4 dugsong 182: #endif /* AFS */
1.25 markus 183: if (options->password_authentication == -1)
184: options->password_authentication = 1;
1.52 markus 185: if (options->kbd_interactive_authentication == -1)
186: options->kbd_interactive_authentication = 0;
1.63 markus 187: if (options->challenge_reponse_authentication == -1)
188: options->challenge_reponse_authentication = 1;
1.25 markus 189: if (options->permit_empty_passwd == -1)
1.30 markus 190: options->permit_empty_passwd = 0;
1.25 markus 191: if (options->use_login == -1)
192: options->use_login = 0;
1.53 markus 193: if (options->allow_tcp_forwarding == -1)
194: options->allow_tcp_forwarding = 1;
1.38 markus 195: if (options->gateway_ports == -1)
196: options->gateway_ports = 0;
1.46 markus 197: if (options->max_startups == -1)
198: options->max_startups = 10;
1.50 markus 199: if (options->max_startups_rate == -1)
200: options->max_startups_rate = 100; /* 100% */
201: if (options->max_startups_begin == -1)
202: options->max_startups_begin = options->max_startups;
1.64 markus 203: if (options->reverse_mapping_check == -1)
204: options->reverse_mapping_check = 0;
1.1 deraadt 205: }
206:
207: /* Keyword tokens. */
1.25 markus 208: typedef enum {
209: sBadOption, /* == unknown option */
210: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
211: sPermitRootLogin, sLogFacility, sLogLevel,
212: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 213: #ifdef KRB4
1.25 markus 214: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 215: #endif
216: #ifdef AFS
1.25 markus 217: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 218: #endif
1.63 markus 219: sChallengeResponseAuthentication,
1.52 markus 220: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.72 stevesk 221: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
222: sX11Forwarding, sX11DisplayOffset,
1.69 stevesk 223: sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail,
1.53 markus 224: sUseLogin, sAllowTcpForwarding,
225: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 226: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.54 markus 227: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.75 ! markus 228: sBanner, sReverseMappingCheck, sHostbasedAuthentication,
! 229: sHostbasedUsesNameFromPacketOnly
1.1 deraadt 230: } ServerOpCodes;
231:
232: /* Textual representation of the tokens. */
1.25 markus 233: static struct {
234: const char *name;
235: ServerOpCodes opcode;
236: } keywords[] = {
237: { "port", sPort },
238: { "hostkey", sHostKeyFile },
1.54 markus 239: { "hostdsakey", sHostKeyFile }, /* alias */
1.65 stevesk 240: { "pidfile", sPidFile },
1.25 markus 241: { "serverkeybits", sServerKeyBits },
242: { "logingracetime", sLoginGraceTime },
243: { "keyregenerationinterval", sKeyRegenerationTime },
244: { "permitrootlogin", sPermitRootLogin },
245: { "syslogfacility", sLogFacility },
246: { "loglevel", sLogLevel },
247: { "rhostsauthentication", sRhostsAuthentication },
248: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
1.75 ! markus 249: { "hostbasedauthentication", sHostbasedAuthentication },
! 250: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly },
1.25 markus 251: { "rsaauthentication", sRSAAuthentication },
1.54 markus 252: { "pubkeyauthentication", sPubkeyAuthentication },
253: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 254: #ifdef KRB4
1.25 markus 255: { "kerberosauthentication", sKerberosAuthentication },
256: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
257: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 258: #endif
1.4 dugsong 259: #ifdef AFS
1.25 markus 260: { "kerberostgtpassing", sKerberosTgtPassing },
261: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 262: #endif
1.25 markus 263: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 264: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.63 markus 265: { "challengeresponseauthentication", sChallengeResponseAuthentication },
266: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.25 markus 267: { "checkmail", sCheckMail },
268: { "listenaddress", sListenAddress },
269: { "printmotd", sPrintMotd },
1.72 stevesk 270: { "printlastlog", sPrintLastLog },
1.25 markus 271: { "ignorerhosts", sIgnoreRhosts },
272: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
273: { "x11forwarding", sX11Forwarding },
274: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 275: { "xauthlocation", sXAuthLocation },
1.25 markus 276: { "strictmodes", sStrictModes },
277: { "permitemptypasswords", sEmptyPasswd },
278: { "uselogin", sUseLogin },
279: { "keepalive", sKeepAlives },
1.53 markus 280: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 281: { "allowusers", sAllowUsers },
282: { "denyusers", sDenyUsers },
283: { "allowgroups", sAllowGroups },
284: { "denygroups", sDenyGroups },
1.33 markus 285: { "ciphers", sCiphers },
1.66 markus 286: { "macs", sMacs },
1.33 markus 287: { "protocol", sProtocol },
1.38 markus 288: { "gatewayports", sGatewayPorts },
1.43 jakob 289: { "subsystem", sSubsystem },
1.46 markus 290: { "maxstartups", sMaxStartups },
1.57 markus 291: { "banner", sBanner },
1.64 markus 292: { "reversemappingcheck", sReverseMappingCheck },
1.25 markus 293: { NULL, 0 }
1.1 deraadt 294: };
295:
1.27 markus 296: /*
1.73 stevesk 297: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 298: */
1.1 deraadt 299:
1.34 markus 300: static ServerOpCodes
1.25 markus 301: parse_token(const char *cp, const char *filename,
302: int linenum)
1.1 deraadt 303: {
1.55 markus 304: u_int i;
1.1 deraadt 305:
1.25 markus 306: for (i = 0; keywords[i].name; i++)
1.28 markus 307: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 308: return keywords[i].opcode;
309:
310: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
311: filename, linenum, cp);
312: return sBadOption;
1.1 deraadt 313: }
314:
1.29 markus 315: /*
316: * add listen address
317: */
1.34 markus 318: void
1.74 stevesk 319: add_listen_addr(ServerOptions *options, char *addr, char *port)
320: {
321: int i;
322:
323: if (options->num_ports == 0)
324: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
325: if (port == NULL)
326: for (i = 0; i < options->num_ports; i++)
327: add_one_listen_addr(options, addr, options->ports[i]);
328: else
329: add_one_listen_addr(options, addr, atoi(port));
330: }
331:
332: void
333: add_one_listen_addr(ServerOptions *options, char *addr, u_short port)
1.29 markus 334: {
335: struct addrinfo hints, *ai, *aitop;
336: char strport[NI_MAXSERV];
337: int gaierr;
338:
1.74 stevesk 339: memset(&hints, 0, sizeof(hints));
340: hints.ai_family = IPv4or6;
341: hints.ai_socktype = SOCK_STREAM;
342: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
343: snprintf(strport, sizeof strport, "%d", port);
344: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
345: fatal("bad addr or host: %s (%s)",
346: addr ? addr : "<NULL>",
347: gai_strerror(gaierr));
348: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
349: ;
350: ai->ai_next = options->listen_addrs;
351: options->listen_addrs = aitop;
1.29 markus 352: }
353:
1.1 deraadt 354: /* Reads the server configuration file. */
355:
1.34 markus 356: void
1.25 markus 357: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 358: {
1.25 markus 359: FILE *f;
360: char line[1024];
1.74 stevesk 361: char *cp, **charptr, *arg, *p;
1.25 markus 362: int linenum, *intptr, value;
363: int bad_options = 0;
364: ServerOpCodes opcode;
1.43 jakob 365: int i;
1.25 markus 366:
367: f = fopen(filename, "r");
368: if (!f) {
369: perror(filename);
1.1 deraadt 370: exit(1);
1.25 markus 371: }
372: linenum = 0;
373: while (fgets(line, sizeof(line), f)) {
374: linenum++;
1.48 provos 375: cp = line;
376: arg = strdelim(&cp);
377: /* Ignore leading whitespace */
378: if (*arg == '\0')
1.49 markus 379: arg = strdelim(&cp);
1.61 djm 380: if (!arg || !*arg || *arg == '#')
1.25 markus 381: continue;
1.54 markus 382: intptr = NULL;
383: charptr = NULL;
1.47 ho 384: opcode = parse_token(arg, filename, linenum);
1.25 markus 385: switch (opcode) {
386: case sBadOption:
387: bad_options++;
388: continue;
389: case sPort:
1.29 markus 390: /* ignore ports from configfile if cmdline specifies ports */
391: if (options->ports_from_cmdline)
392: continue;
393: if (options->listen_addrs != NULL)
394: fatal("%s line %d: ports must be specified before "
395: "ListenAdress.\n", filename, linenum);
396: if (options->num_ports >= MAX_PORTS)
1.70 millert 397: fatal("%s line %d: too many ports.",
1.34 markus 398: filename, linenum);
1.48 provos 399: arg = strdelim(&cp);
1.47 ho 400: if (!arg || *arg == '\0')
1.70 millert 401: fatal("%s line %d: missing port number.",
1.29 markus 402: filename, linenum);
1.47 ho 403: options->ports[options->num_ports++] = atoi(arg);
1.29 markus 404: break;
405:
406: case sServerKeyBits:
407: intptr = &options->server_key_bits;
1.25 markus 408: parse_int:
1.48 provos 409: arg = strdelim(&cp);
1.47 ho 410: if (!arg || *arg == '\0') {
1.25 markus 411: fprintf(stderr, "%s line %d: missing integer value.\n",
412: filename, linenum);
413: exit(1);
414: }
1.47 ho 415: value = atoi(arg);
1.25 markus 416: if (*intptr == -1)
417: *intptr = value;
418: break;
419:
420: case sLoginGraceTime:
421: intptr = &options->login_grace_time;
422: goto parse_int;
423:
424: case sKeyRegenerationTime:
425: intptr = &options->key_regeneration_time;
426: goto parse_int;
427:
428: case sListenAddress:
1.48 provos 429: arg = strdelim(&cp);
1.74 stevesk 430: if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
1.70 millert 431: fatal("%s line %d: missing inet addr.",
1.29 markus 432: filename, linenum);
1.74 stevesk 433: if (*arg == '[') {
434: if ((p = strchr(arg, ']')) == NULL)
435: fatal("%s line %d: bad ipv6 inet addr usage.",
436: filename, linenum);
437: arg++;
438: memmove(p, p+1, strlen(p+1)+1);
439: } else if (((p = strchr(arg, ':')) == NULL) ||
440: (strchr(p+1, ':') != NULL)) {
441: add_listen_addr(options, arg, NULL);
442: break;
443: }
444: if (*p == ':') {
445: p++;
446: if (*p == '\0')
447: fatal("%s line %d: bad inet addr:port usage.",
448: filename, linenum);
449: else {
450: *(p-1) = '\0';
451: add_listen_addr(options, arg, p);
452: }
453: } else if (*p == '\0')
454: add_listen_addr(options, arg, NULL);
455: else
456: fatal("%s line %d: bad inet addr usage.",
457: filename, linenum);
1.25 markus 458: break;
459:
460: case sHostKeyFile:
1.54 markus 461: intptr = &options->num_host_key_files;
462: if (*intptr >= MAX_HOSTKEYS) {
1.68 deraadt 463: fprintf(stderr,
464: "%s line %d: too many host keys specified (max %d).\n",
1.54 markus 465: filename, linenum, MAX_HOSTKEYS);
466: exit(1);
467: }
468: charptr = &options->host_key_files[*intptr];
1.42 markus 469: parse_filename:
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 file name.\n",
1.36 markus 473: filename, linenum);
474: exit(1);
475: }
1.54 markus 476: if (*charptr == NULL) {
1.47 ho 477: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 478: /* increase optional counter */
479: if (intptr != NULL)
480: *intptr = *intptr + 1;
481: }
1.36 markus 482: break;
483:
484: case sPidFile:
485: charptr = &options->pid_file;
1.42 markus 486: goto parse_filename;
1.25 markus 487:
488: case sPermitRootLogin:
489: intptr = &options->permit_root_login;
1.48 provos 490: arg = strdelim(&cp);
1.47 ho 491: if (!arg || *arg == '\0') {
1.71 stevesk 492: fprintf(stderr, "%s line %d: missing yes/"
493: "without-password/forced-commands-only/no "
494: "argument.\n", filename, linenum);
1.25 markus 495: exit(1);
496: }
1.47 ho 497: if (strcmp(arg, "without-password") == 0)
1.67 markus 498: value = PERMIT_NO_PASSWD;
499: else if (strcmp(arg, "forced-commands-only") == 0)
500: value = PERMIT_FORCED_ONLY;
1.47 ho 501: else if (strcmp(arg, "yes") == 0)
1.67 markus 502: value = PERMIT_YES;
1.47 ho 503: else if (strcmp(arg, "no") == 0)
1.67 markus 504: value = PERMIT_NO;
1.25 markus 505: else {
1.67 markus 506: fprintf(stderr, "%s line %d: Bad yes/"
507: "without-password/forced-commands-only/no "
508: "argument: %s\n", filename, linenum, arg);
1.25 markus 509: exit(1);
510: }
511: if (*intptr == -1)
512: *intptr = value;
513: break;
514:
515: case sIgnoreRhosts:
516: intptr = &options->ignore_rhosts;
517: parse_flag:
1.48 provos 518: arg = strdelim(&cp);
1.47 ho 519: if (!arg || *arg == '\0') {
1.25 markus 520: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
521: filename, linenum);
522: exit(1);
523: }
1.47 ho 524: if (strcmp(arg, "yes") == 0)
1.25 markus 525: value = 1;
1.47 ho 526: else if (strcmp(arg, "no") == 0)
1.25 markus 527: value = 0;
528: else {
529: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 530: filename, linenum, arg);
1.25 markus 531: exit(1);
532: }
533: if (*intptr == -1)
534: *intptr = value;
535: break;
536:
537: case sIgnoreUserKnownHosts:
538: intptr = &options->ignore_user_known_hosts;
1.31 markus 539: goto parse_flag;
1.25 markus 540:
541: case sRhostsAuthentication:
542: intptr = &options->rhosts_authentication;
543: goto parse_flag;
544:
545: case sRhostsRSAAuthentication:
546: intptr = &options->rhosts_rsa_authentication;
1.75 ! markus 547: goto parse_flag;
! 548:
! 549: case sHostbasedAuthentication:
! 550: intptr = &options->hostbased_authentication;
! 551: goto parse_flag;
! 552:
! 553: case sHostbasedUsesNameFromPacketOnly:
! 554: intptr = &options->hostbased_uses_name_from_packet_only;
1.25 markus 555: goto parse_flag;
556:
557: case sRSAAuthentication:
558: intptr = &options->rsa_authentication;
1.39 markus 559: goto parse_flag;
560:
1.54 markus 561: case sPubkeyAuthentication:
562: intptr = &options->pubkey_authentication;
1.25 markus 563: goto parse_flag;
564:
1.1 deraadt 565: #ifdef KRB4
1.25 markus 566: case sKerberosAuthentication:
567: intptr = &options->kerberos_authentication;
568: goto parse_flag;
569:
570: case sKerberosOrLocalPasswd:
571: intptr = &options->kerberos_or_local_passwd;
572: goto parse_flag;
573:
574: case sKerberosTicketCleanup:
575: intptr = &options->kerberos_ticket_cleanup;
576: goto parse_flag;
1.1 deraadt 577: #endif
1.25 markus 578:
1.4 dugsong 579: #ifdef AFS
1.25 markus 580: case sKerberosTgtPassing:
581: intptr = &options->kerberos_tgt_passing;
582: goto parse_flag;
583:
584: case sAFSTokenPassing:
585: intptr = &options->afs_token_passing;
586: goto parse_flag;
587: #endif
588:
589: case sPasswordAuthentication:
590: intptr = &options->password_authentication;
1.52 markus 591: goto parse_flag;
592:
593: case sKbdInteractiveAuthentication:
594: intptr = &options->kbd_interactive_authentication;
1.25 markus 595: goto parse_flag;
596:
597: case sCheckMail:
598: intptr = &options->check_mail;
599: goto parse_flag;
1.10 markus 600:
1.63 markus 601: case sChallengeResponseAuthentication:
602: intptr = &options->challenge_reponse_authentication;
1.25 markus 603: goto parse_flag;
604:
605: case sPrintMotd:
606: intptr = &options->print_motd;
1.72 stevesk 607: goto parse_flag;
608:
609: case sPrintLastLog:
610: intptr = &options->print_lastlog;
1.25 markus 611: goto parse_flag;
612:
613: case sX11Forwarding:
614: intptr = &options->x11_forwarding;
615: goto parse_flag;
616:
617: case sX11DisplayOffset:
618: intptr = &options->x11_display_offset;
619: goto parse_int;
620:
1.42 markus 621: case sXAuthLocation:
622: charptr = &options->xauth_location;
623: goto parse_filename;
1.65 stevesk 624:
1.25 markus 625: case sStrictModes:
626: intptr = &options->strict_modes;
627: goto parse_flag;
628:
629: case sKeepAlives:
630: intptr = &options->keepalives;
631: goto parse_flag;
632:
633: case sEmptyPasswd:
634: intptr = &options->permit_empty_passwd;
635: goto parse_flag;
636:
637: case sUseLogin:
638: intptr = &options->use_login;
1.38 markus 639: goto parse_flag;
640:
641: case sGatewayPorts:
642: intptr = &options->gateway_ports;
1.64 markus 643: goto parse_flag;
644:
645: case sReverseMappingCheck:
646: intptr = &options->reverse_mapping_check;
1.25 markus 647: goto parse_flag;
648:
649: case sLogFacility:
650: intptr = (int *) &options->log_facility;
1.48 provos 651: arg = strdelim(&cp);
1.47 ho 652: value = log_facility_number(arg);
1.25 markus 653: if (value == (SyslogFacility) - 1)
1.70 millert 654: fatal("%.200s line %d: unsupported log facility '%s'",
1.47 ho 655: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 656: if (*intptr == -1)
657: *intptr = (SyslogFacility) value;
658: break;
659:
660: case sLogLevel:
661: intptr = (int *) &options->log_level;
1.48 provos 662: arg = strdelim(&cp);
1.47 ho 663: value = log_level_number(arg);
1.25 markus 664: if (value == (LogLevel) - 1)
1.70 millert 665: fatal("%.200s line %d: unsupported log level '%s'",
1.47 ho 666: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 667: if (*intptr == -1)
668: *intptr = (LogLevel) value;
669: break;
1.53 markus 670:
671: case sAllowTcpForwarding:
672: intptr = &options->allow_tcp_forwarding;
673: goto parse_flag;
1.25 markus 674:
675: case sAllowUsers:
1.48 provos 676: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 677: if (options->num_allow_users >= MAX_ALLOW_USERS)
1.70 millert 678: fatal("%s line %d: too many allow users.",
1.33 markus 679: filename, linenum);
1.47 ho 680: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 681: }
682: break;
683:
684: case sDenyUsers:
1.48 provos 685: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 686: if (options->num_deny_users >= MAX_DENY_USERS)
1.70 millert 687: fatal( "%s line %d: too many deny users.",
1.33 markus 688: filename, linenum);
1.47 ho 689: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 690: }
691: break;
692:
693: case sAllowGroups:
1.48 provos 694: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 695: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1.70 millert 696: fatal("%s line %d: too many allow groups.",
1.33 markus 697: filename, linenum);
1.47 ho 698: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 699: }
700: break;
701:
702: case sDenyGroups:
1.48 provos 703: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 704: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1.70 millert 705: fatal("%s line %d: too many deny groups.",
1.33 markus 706: filename, linenum);
1.47 ho 707: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 708: }
1.33 markus 709: break;
710:
711: case sCiphers:
1.48 provos 712: arg = strdelim(&cp);
1.47 ho 713: if (!arg || *arg == '\0')
1.41 markus 714: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 715: if (!ciphers_valid(arg))
1.40 markus 716: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 717: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 718: if (options->ciphers == NULL)
1.47 ho 719: options->ciphers = xstrdup(arg);
1.66 markus 720: break;
721:
722: case sMacs:
723: arg = strdelim(&cp);
724: if (!arg || *arg == '\0')
725: fatal("%s line %d: Missing argument.", filename, linenum);
726: if (!mac_valid(arg))
727: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
728: filename, linenum, arg ? arg : "<NONE>");
729: if (options->macs == NULL)
730: options->macs = xstrdup(arg);
1.33 markus 731: break;
732:
733: case sProtocol:
734: intptr = &options->protocol;
1.48 provos 735: arg = strdelim(&cp);
1.47 ho 736: if (!arg || *arg == '\0')
1.41 markus 737: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 738: value = proto_spec(arg);
1.33 markus 739: if (value == SSH_PROTO_UNKNOWN)
740: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 741: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 742: if (*intptr == SSH_PROTO_UNKNOWN)
743: *intptr = value;
1.43 jakob 744: break;
745:
746: case sSubsystem:
747: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
748: fatal("%s line %d: too many subsystems defined.",
749: filename, linenum);
750: }
1.48 provos 751: arg = strdelim(&cp);
1.47 ho 752: if (!arg || *arg == '\0')
1.43 jakob 753: fatal("%s line %d: Missing subsystem name.",
754: filename, linenum);
755: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 756: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 757: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 758: filename, linenum, arg);
759: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 760: arg = strdelim(&cp);
1.47 ho 761: if (!arg || *arg == '\0')
1.43 jakob 762: fatal("%s line %d: Missing subsystem command.",
763: filename, linenum);
1.47 ho 764: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 765: options->num_subsystems++;
1.25 markus 766: break;
1.46 markus 767:
768: case sMaxStartups:
1.50 markus 769: arg = strdelim(&cp);
770: if (!arg || *arg == '\0')
771: fatal("%s line %d: Missing MaxStartups spec.",
772: filename, linenum);
773: if (sscanf(arg, "%d:%d:%d",
774: &options->max_startups_begin,
775: &options->max_startups_rate,
776: &options->max_startups) == 3) {
777: if (options->max_startups_begin >
778: options->max_startups ||
779: options->max_startups_rate > 100 ||
780: options->max_startups_rate < 1)
781: fatal("%s line %d: Illegal MaxStartups spec.",
782: filename, linenum);
783: break;
784: }
1.46 markus 785: intptr = &options->max_startups;
786: goto parse_int;
1.25 markus 787:
1.57 markus 788: case sBanner:
789: charptr = &options->banner;
790: goto parse_filename;
1.65 stevesk 791:
1.25 markus 792: default:
793: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 794: filename, linenum, arg, opcode);
1.25 markus 795: exit(1);
1.13 markus 796: }
1.48 provos 797: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.65 stevesk 798: fprintf(stderr,
1.47 ho 799: "%s line %d: garbage at end of line; \"%.200s\".\n",
800: filename, linenum, arg);
1.25 markus 801: exit(1);
1.13 markus 802: }
1.1 deraadt 803: }
1.25 markus 804: fclose(f);
805: if (bad_options > 0) {
806: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
807: filename, bad_options);
808: exit(1);
1.1 deraadt 809: }
810: }
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