Annotation of src/usr.bin/ssh/servconf.c, Revision 1.77
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"
1.77 ! beck 13: RCSID("$OpenBSD: servconf.c,v 1.76 2001/04/12 20:09:37 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:
1.76 stevesk 34: void add_listen_addr(ServerOptions *options, char *addr, u_short port);
1.74 stevesk 35: void add_one_listen_addr(ServerOptions *options, char *addr, u_short port);
1.29 markus 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;
1.72 stevesk 58: options->print_lastlog = -1;
1.25 markus 59: options->check_mail = -1;
60: options->x11_forwarding = -1;
61: options->x11_display_offset = -1;
1.42 markus 62: options->xauth_location = NULL;
1.25 markus 63: options->strict_modes = -1;
64: options->keepalives = -1;
65: options->log_facility = (SyslogFacility) - 1;
66: options->log_level = (LogLevel) - 1;
67: options->rhosts_authentication = -1;
68: options->rhosts_rsa_authentication = -1;
1.75 markus 69: options->hostbased_authentication = -1;
70: options->hostbased_uses_name_from_packet_only = -1;
1.25 markus 71: options->rsa_authentication = -1;
1.54 markus 72: options->pubkey_authentication = -1;
1.1 deraadt 73: #ifdef KRB4
1.25 markus 74: options->kerberos_authentication = -1;
75: options->kerberos_or_local_passwd = -1;
76: options->kerberos_ticket_cleanup = -1;
1.1 deraadt 77: #endif
1.4 dugsong 78: #ifdef AFS
1.25 markus 79: options->kerberos_tgt_passing = -1;
80: options->afs_token_passing = -1;
1.1 deraadt 81: #endif
1.25 markus 82: options->password_authentication = -1;
1.52 markus 83: options->kbd_interactive_authentication = -1;
1.63 markus 84: options->challenge_reponse_authentication = -1;
1.25 markus 85: options->permit_empty_passwd = -1;
86: options->use_login = -1;
1.53 markus 87: options->allow_tcp_forwarding = -1;
1.25 markus 88: options->num_allow_users = 0;
89: options->num_deny_users = 0;
90: options->num_allow_groups = 0;
91: options->num_deny_groups = 0;
1.33 markus 92: options->ciphers = NULL;
1.66 markus 93: options->macs = NULL;
1.33 markus 94: options->protocol = SSH_PROTO_UNKNOWN;
1.38 markus 95: options->gateway_ports = -1;
1.43 jakob 96: options->num_subsystems = 0;
1.50 markus 97: options->max_startups_begin = -1;
98: options->max_startups_rate = -1;
1.46 markus 99: options->max_startups = -1;
1.57 markus 100: options->banner = NULL;
1.64 markus 101: options->reverse_mapping_check = -1;
1.77 ! beck 102: options->client_alive_interval = -1;
! 103: options->client_alive_count_max = -1;
1.1 deraadt 104: }
105:
1.34 markus 106: void
1.25 markus 107: fill_default_server_options(ServerOptions *options)
1.1 deraadt 108: {
1.54 markus 109: if (options->protocol == SSH_PROTO_UNKNOWN)
110: options->protocol = SSH_PROTO_1|SSH_PROTO_2;
111: if (options->num_host_key_files == 0) {
112: /* fill default hostkeys for protocols */
113: if (options->protocol & SSH_PROTO_1)
1.60 markus 114: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
1.54 markus 115: if (options->protocol & SSH_PROTO_2)
1.60 markus 116: options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
1.54 markus 117: }
1.29 markus 118: if (options->num_ports == 0)
119: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
120: if (options->listen_addrs == NULL)
1.76 stevesk 121: add_listen_addr(options, NULL, 0);
1.36 markus 122: if (options->pid_file == NULL)
1.60 markus 123: options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
1.25 markus 124: if (options->server_key_bits == -1)
125: options->server_key_bits = 768;
126: if (options->login_grace_time == -1)
127: options->login_grace_time = 600;
128: if (options->key_regeneration_time == -1)
129: options->key_regeneration_time = 3600;
1.67 markus 130: if (options->permit_root_login == PERMIT_NOT_SET)
131: options->permit_root_login = PERMIT_YES;
1.25 markus 132: if (options->ignore_rhosts == -1)
1.30 markus 133: options->ignore_rhosts = 1;
1.25 markus 134: if (options->ignore_user_known_hosts == -1)
135: options->ignore_user_known_hosts = 0;
136: if (options->check_mail == -1)
137: options->check_mail = 0;
138: if (options->print_motd == -1)
139: options->print_motd = 1;
1.72 stevesk 140: if (options->print_lastlog == -1)
141: options->print_lastlog = 1;
1.25 markus 142: if (options->x11_forwarding == -1)
1.30 markus 143: options->x11_forwarding = 0;
1.25 markus 144: if (options->x11_display_offset == -1)
1.30 markus 145: options->x11_display_offset = 10;
1.42 markus 146: #ifdef XAUTH_PATH
147: if (options->xauth_location == NULL)
148: options->xauth_location = XAUTH_PATH;
149: #endif /* XAUTH_PATH */
1.25 markus 150: if (options->strict_modes == -1)
151: options->strict_modes = 1;
152: if (options->keepalives == -1)
153: options->keepalives = 1;
154: if (options->log_facility == (SyslogFacility) (-1))
155: options->log_facility = SYSLOG_FACILITY_AUTH;
156: if (options->log_level == (LogLevel) (-1))
1.58 markus 157: options->log_level = SYSLOG_LEVEL_INFO;
1.25 markus 158: if (options->rhosts_authentication == -1)
159: options->rhosts_authentication = 0;
160: if (options->rhosts_rsa_authentication == -1)
1.30 markus 161: options->rhosts_rsa_authentication = 0;
1.75 markus 162: if (options->hostbased_authentication == -1)
163: options->hostbased_authentication = 0;
164: if (options->hostbased_uses_name_from_packet_only == -1)
165: options->hostbased_uses_name_from_packet_only = 0;
1.25 markus 166: if (options->rsa_authentication == -1)
167: options->rsa_authentication = 1;
1.54 markus 168: if (options->pubkey_authentication == -1)
169: options->pubkey_authentication = 1;
1.1 deraadt 170: #ifdef KRB4
1.25 markus 171: if (options->kerberos_authentication == -1)
172: options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
173: if (options->kerberos_or_local_passwd == -1)
174: options->kerberos_or_local_passwd = 1;
175: if (options->kerberos_ticket_cleanup == -1)
176: options->kerberos_ticket_cleanup = 1;
1.4 dugsong 177: #endif /* KRB4 */
178: #ifdef AFS
1.25 markus 179: if (options->kerberos_tgt_passing == -1)
180: options->kerberos_tgt_passing = 0;
181: if (options->afs_token_passing == -1)
182: options->afs_token_passing = k_hasafs();
1.4 dugsong 183: #endif /* AFS */
1.25 markus 184: if (options->password_authentication == -1)
185: options->password_authentication = 1;
1.52 markus 186: if (options->kbd_interactive_authentication == -1)
187: options->kbd_interactive_authentication = 0;
1.63 markus 188: if (options->challenge_reponse_authentication == -1)
189: options->challenge_reponse_authentication = 1;
1.25 markus 190: if (options->permit_empty_passwd == -1)
1.30 markus 191: options->permit_empty_passwd = 0;
1.25 markus 192: if (options->use_login == -1)
193: options->use_login = 0;
1.53 markus 194: if (options->allow_tcp_forwarding == -1)
195: options->allow_tcp_forwarding = 1;
1.38 markus 196: if (options->gateway_ports == -1)
197: options->gateway_ports = 0;
1.46 markus 198: if (options->max_startups == -1)
199: options->max_startups = 10;
1.50 markus 200: if (options->max_startups_rate == -1)
201: options->max_startups_rate = 100; /* 100% */
202: if (options->max_startups_begin == -1)
203: options->max_startups_begin = options->max_startups;
1.64 markus 204: if (options->reverse_mapping_check == -1)
205: options->reverse_mapping_check = 0;
1.77 ! beck 206: if (options->client_alive_interval == -1)
! 207: options->client_alive_interval = 0;
! 208: if (options->client_alive_count_max == -1)
! 209: options->client_alive_count_max = 3;
1.1 deraadt 210: }
211:
212: /* Keyword tokens. */
1.25 markus 213: typedef enum {
214: sBadOption, /* == unknown option */
215: sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
216: sPermitRootLogin, sLogFacility, sLogLevel,
217: sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
1.1 deraadt 218: #ifdef KRB4
1.25 markus 219: sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
1.1 deraadt 220: #endif
221: #ifdef AFS
1.25 markus 222: sKerberosTgtPassing, sAFSTokenPassing,
1.1 deraadt 223: #endif
1.63 markus 224: sChallengeResponseAuthentication,
1.52 markus 225: sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
1.72 stevesk 226: sPrintMotd, sPrintLastLog, sIgnoreRhosts,
227: sX11Forwarding, sX11DisplayOffset,
1.69 stevesk 228: sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail,
1.53 markus 229: sUseLogin, sAllowTcpForwarding,
230: sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
1.66 markus 231: sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
1.54 markus 232: sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
1.75 markus 233: sBanner, sReverseMappingCheck, sHostbasedAuthentication,
1.77 ! beck 234: sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
! 235: sClientAliveCountMax
1.1 deraadt 236: } ServerOpCodes;
237:
238: /* Textual representation of the tokens. */
1.25 markus 239: static struct {
240: const char *name;
241: ServerOpCodes opcode;
242: } keywords[] = {
243: { "port", sPort },
244: { "hostkey", sHostKeyFile },
1.54 markus 245: { "hostdsakey", sHostKeyFile }, /* alias */
1.65 stevesk 246: { "pidfile", sPidFile },
1.25 markus 247: { "serverkeybits", sServerKeyBits },
248: { "logingracetime", sLoginGraceTime },
249: { "keyregenerationinterval", sKeyRegenerationTime },
250: { "permitrootlogin", sPermitRootLogin },
251: { "syslogfacility", sLogFacility },
252: { "loglevel", sLogLevel },
253: { "rhostsauthentication", sRhostsAuthentication },
254: { "rhostsrsaauthentication", sRhostsRSAAuthentication },
1.75 markus 255: { "hostbasedauthentication", sHostbasedAuthentication },
256: { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly },
1.25 markus 257: { "rsaauthentication", sRSAAuthentication },
1.54 markus 258: { "pubkeyauthentication", sPubkeyAuthentication },
259: { "dsaauthentication", sPubkeyAuthentication }, /* alias */
1.1 deraadt 260: #ifdef KRB4
1.25 markus 261: { "kerberosauthentication", sKerberosAuthentication },
262: { "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
263: { "kerberosticketcleanup", sKerberosTicketCleanup },
1.1 deraadt 264: #endif
1.4 dugsong 265: #ifdef AFS
1.25 markus 266: { "kerberostgtpassing", sKerberosTgtPassing },
267: { "afstokenpassing", sAFSTokenPassing },
1.1 deraadt 268: #endif
1.25 markus 269: { "passwordauthentication", sPasswordAuthentication },
1.52 markus 270: { "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
1.63 markus 271: { "challengeresponseauthentication", sChallengeResponseAuthentication },
272: { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
1.25 markus 273: { "checkmail", sCheckMail },
274: { "listenaddress", sListenAddress },
275: { "printmotd", sPrintMotd },
1.72 stevesk 276: { "printlastlog", sPrintLastLog },
1.25 markus 277: { "ignorerhosts", sIgnoreRhosts },
278: { "ignoreuserknownhosts", sIgnoreUserKnownHosts },
279: { "x11forwarding", sX11Forwarding },
280: { "x11displayoffset", sX11DisplayOffset },
1.42 markus 281: { "xauthlocation", sXAuthLocation },
1.25 markus 282: { "strictmodes", sStrictModes },
283: { "permitemptypasswords", sEmptyPasswd },
284: { "uselogin", sUseLogin },
285: { "keepalive", sKeepAlives },
1.53 markus 286: { "allowtcpforwarding", sAllowTcpForwarding },
1.25 markus 287: { "allowusers", sAllowUsers },
288: { "denyusers", sDenyUsers },
289: { "allowgroups", sAllowGroups },
290: { "denygroups", sDenyGroups },
1.33 markus 291: { "ciphers", sCiphers },
1.66 markus 292: { "macs", sMacs },
1.33 markus 293: { "protocol", sProtocol },
1.38 markus 294: { "gatewayports", sGatewayPorts },
1.43 jakob 295: { "subsystem", sSubsystem },
1.46 markus 296: { "maxstartups", sMaxStartups },
1.57 markus 297: { "banner", sBanner },
1.64 markus 298: { "reversemappingcheck", sReverseMappingCheck },
1.77 ! beck 299: { "clientaliveinterval", sClientAliveInterval },
! 300: { "clientalivecountmax", sClientAliveCountMax },
1.25 markus 301: { NULL, 0 }
1.1 deraadt 302: };
303:
1.27 markus 304: /*
1.73 stevesk 305: * Returns the number of the token pointed to by cp or sBadOption.
1.27 markus 306: */
1.1 deraadt 307:
1.34 markus 308: static ServerOpCodes
1.25 markus 309: parse_token(const char *cp, const char *filename,
310: int linenum)
1.1 deraadt 311: {
1.55 markus 312: u_int i;
1.1 deraadt 313:
1.25 markus 314: for (i = 0; keywords[i].name; i++)
1.28 markus 315: if (strcasecmp(cp, keywords[i].name) == 0)
1.25 markus 316: return keywords[i].opcode;
317:
318: fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
319: filename, linenum, cp);
320: return sBadOption;
1.1 deraadt 321: }
322:
1.34 markus 323: void
1.76 stevesk 324: add_listen_addr(ServerOptions *options, char *addr, u_short port)
1.74 stevesk 325: {
326: int i;
327:
328: if (options->num_ports == 0)
329: options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
1.76 stevesk 330: if (port == 0)
1.74 stevesk 331: for (i = 0; i < options->num_ports; i++)
332: add_one_listen_addr(options, addr, options->ports[i]);
333: else
1.76 stevesk 334: add_one_listen_addr(options, addr, port);
1.74 stevesk 335: }
336:
337: void
338: add_one_listen_addr(ServerOptions *options, char *addr, u_short port)
1.29 markus 339: {
340: struct addrinfo hints, *ai, *aitop;
341: char strport[NI_MAXSERV];
342: int gaierr;
343:
1.74 stevesk 344: memset(&hints, 0, sizeof(hints));
345: hints.ai_family = IPv4or6;
346: hints.ai_socktype = SOCK_STREAM;
347: hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
348: snprintf(strport, sizeof strport, "%d", port);
349: if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
350: fatal("bad addr or host: %s (%s)",
351: addr ? addr : "<NULL>",
352: gai_strerror(gaierr));
353: for (ai = aitop; ai->ai_next; ai = ai->ai_next)
354: ;
355: ai->ai_next = options->listen_addrs;
356: options->listen_addrs = aitop;
1.29 markus 357: }
358:
1.1 deraadt 359: /* Reads the server configuration file. */
360:
1.34 markus 361: void
1.25 markus 362: read_server_config(ServerOptions *options, const char *filename)
1.1 deraadt 363: {
1.25 markus 364: FILE *f;
365: char line[1024];
1.74 stevesk 366: char *cp, **charptr, *arg, *p;
1.25 markus 367: int linenum, *intptr, value;
368: int bad_options = 0;
369: ServerOpCodes opcode;
1.43 jakob 370: int i;
1.25 markus 371:
372: f = fopen(filename, "r");
373: if (!f) {
374: perror(filename);
1.1 deraadt 375: exit(1);
1.25 markus 376: }
377: linenum = 0;
378: while (fgets(line, sizeof(line), f)) {
379: linenum++;
1.48 provos 380: cp = line;
381: arg = strdelim(&cp);
382: /* Ignore leading whitespace */
383: if (*arg == '\0')
1.49 markus 384: arg = strdelim(&cp);
1.61 djm 385: if (!arg || !*arg || *arg == '#')
1.25 markus 386: continue;
1.54 markus 387: intptr = NULL;
388: charptr = NULL;
1.47 ho 389: opcode = parse_token(arg, filename, linenum);
1.25 markus 390: switch (opcode) {
391: case sBadOption:
392: bad_options++;
393: continue;
394: case sPort:
1.29 markus 395: /* ignore ports from configfile if cmdline specifies ports */
396: if (options->ports_from_cmdline)
397: continue;
398: if (options->listen_addrs != NULL)
399: fatal("%s line %d: ports must be specified before "
400: "ListenAdress.\n", filename, linenum);
401: if (options->num_ports >= MAX_PORTS)
1.70 millert 402: fatal("%s line %d: too many ports.",
1.34 markus 403: filename, linenum);
1.48 provos 404: arg = strdelim(&cp);
1.47 ho 405: if (!arg || *arg == '\0')
1.70 millert 406: fatal("%s line %d: missing port number.",
1.29 markus 407: filename, linenum);
1.76 stevesk 408: options->ports[options->num_ports++] = a2port(arg);
409: if (options->ports[options->num_ports-1] == 0)
410: fatal("%s line %d: Badly formatted port number.",
411: filename, linenum);
1.29 markus 412: break;
413:
414: case sServerKeyBits:
415: intptr = &options->server_key_bits;
1.25 markus 416: parse_int:
1.48 provos 417: arg = strdelim(&cp);
1.47 ho 418: if (!arg || *arg == '\0') {
1.25 markus 419: fprintf(stderr, "%s line %d: missing integer value.\n",
420: filename, linenum);
421: exit(1);
422: }
1.47 ho 423: value = atoi(arg);
1.25 markus 424: if (*intptr == -1)
425: *intptr = value;
426: break;
427:
428: case sLoginGraceTime:
429: intptr = &options->login_grace_time;
430: goto parse_int;
431:
432: case sKeyRegenerationTime:
433: intptr = &options->key_regeneration_time;
434: goto parse_int;
435:
436: case sListenAddress:
1.48 provos 437: arg = strdelim(&cp);
1.74 stevesk 438: if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
1.70 millert 439: fatal("%s line %d: missing inet addr.",
1.29 markus 440: filename, linenum);
1.74 stevesk 441: if (*arg == '[') {
442: if ((p = strchr(arg, ']')) == NULL)
443: fatal("%s line %d: bad ipv6 inet addr usage.",
444: filename, linenum);
445: arg++;
446: memmove(p, p+1, strlen(p+1)+1);
447: } else if (((p = strchr(arg, ':')) == NULL) ||
448: (strchr(p+1, ':') != NULL)) {
1.76 stevesk 449: add_listen_addr(options, arg, 0);
1.74 stevesk 450: break;
451: }
452: if (*p == ':') {
1.76 stevesk 453: u_short port;
454:
1.74 stevesk 455: p++;
456: if (*p == '\0')
457: fatal("%s line %d: bad inet addr:port usage.",
458: filename, linenum);
459: else {
460: *(p-1) = '\0';
1.76 stevesk 461: if ((port = a2port(p)) == 0)
462: fatal("%s line %d: bad port number.",
463: filename, linenum);
464: add_listen_addr(options, arg, port);
1.74 stevesk 465: }
466: } else if (*p == '\0')
1.76 stevesk 467: add_listen_addr(options, arg, 0);
1.74 stevesk 468: else
469: fatal("%s line %d: bad inet addr usage.",
470: filename, linenum);
1.25 markus 471: break;
472:
473: case sHostKeyFile:
1.54 markus 474: intptr = &options->num_host_key_files;
475: if (*intptr >= MAX_HOSTKEYS) {
1.68 deraadt 476: fprintf(stderr,
477: "%s line %d: too many host keys specified (max %d).\n",
1.54 markus 478: filename, linenum, MAX_HOSTKEYS);
479: exit(1);
480: }
481: charptr = &options->host_key_files[*intptr];
1.42 markus 482: parse_filename:
1.48 provos 483: arg = strdelim(&cp);
1.47 ho 484: if (!arg || *arg == '\0') {
1.25 markus 485: fprintf(stderr, "%s line %d: missing file name.\n",
1.36 markus 486: filename, linenum);
487: exit(1);
488: }
1.54 markus 489: if (*charptr == NULL) {
1.47 ho 490: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 491: /* increase optional counter */
492: if (intptr != NULL)
493: *intptr = *intptr + 1;
494: }
1.36 markus 495: break;
496:
497: case sPidFile:
498: charptr = &options->pid_file;
1.42 markus 499: goto parse_filename;
1.25 markus 500:
501: case sPermitRootLogin:
502: intptr = &options->permit_root_login;
1.48 provos 503: arg = strdelim(&cp);
1.47 ho 504: if (!arg || *arg == '\0') {
1.71 stevesk 505: fprintf(stderr, "%s line %d: missing yes/"
506: "without-password/forced-commands-only/no "
507: "argument.\n", filename, linenum);
1.25 markus 508: exit(1);
509: }
1.47 ho 510: if (strcmp(arg, "without-password") == 0)
1.67 markus 511: value = PERMIT_NO_PASSWD;
512: else if (strcmp(arg, "forced-commands-only") == 0)
513: value = PERMIT_FORCED_ONLY;
1.47 ho 514: else if (strcmp(arg, "yes") == 0)
1.67 markus 515: value = PERMIT_YES;
1.47 ho 516: else if (strcmp(arg, "no") == 0)
1.67 markus 517: value = PERMIT_NO;
1.25 markus 518: else {
1.67 markus 519: fprintf(stderr, "%s line %d: Bad yes/"
520: "without-password/forced-commands-only/no "
521: "argument: %s\n", filename, linenum, arg);
1.25 markus 522: exit(1);
523: }
524: if (*intptr == -1)
525: *intptr = value;
526: break;
527:
528: case sIgnoreRhosts:
529: intptr = &options->ignore_rhosts;
530: parse_flag:
1.48 provos 531: arg = strdelim(&cp);
1.47 ho 532: if (!arg || *arg == '\0') {
1.25 markus 533: fprintf(stderr, "%s line %d: missing yes/no argument.\n",
534: filename, linenum);
535: exit(1);
536: }
1.47 ho 537: if (strcmp(arg, "yes") == 0)
1.25 markus 538: value = 1;
1.47 ho 539: else if (strcmp(arg, "no") == 0)
1.25 markus 540: value = 0;
541: else {
542: fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
1.47 ho 543: filename, linenum, arg);
1.25 markus 544: exit(1);
545: }
546: if (*intptr == -1)
547: *intptr = value;
548: break;
549:
550: case sIgnoreUserKnownHosts:
551: intptr = &options->ignore_user_known_hosts;
1.31 markus 552: goto parse_flag;
1.25 markus 553:
554: case sRhostsAuthentication:
555: intptr = &options->rhosts_authentication;
556: goto parse_flag;
557:
558: case sRhostsRSAAuthentication:
559: intptr = &options->rhosts_rsa_authentication;
1.75 markus 560: goto parse_flag;
561:
562: case sHostbasedAuthentication:
563: intptr = &options->hostbased_authentication;
564: goto parse_flag;
565:
566: case sHostbasedUsesNameFromPacketOnly:
567: intptr = &options->hostbased_uses_name_from_packet_only;
1.25 markus 568: goto parse_flag;
569:
570: case sRSAAuthentication:
571: intptr = &options->rsa_authentication;
1.39 markus 572: goto parse_flag;
573:
1.54 markus 574: case sPubkeyAuthentication:
575: intptr = &options->pubkey_authentication;
1.25 markus 576: goto parse_flag;
577:
1.1 deraadt 578: #ifdef KRB4
1.25 markus 579: case sKerberosAuthentication:
580: intptr = &options->kerberos_authentication;
581: goto parse_flag;
582:
583: case sKerberosOrLocalPasswd:
584: intptr = &options->kerberos_or_local_passwd;
585: goto parse_flag;
586:
587: case sKerberosTicketCleanup:
588: intptr = &options->kerberos_ticket_cleanup;
589: goto parse_flag;
1.1 deraadt 590: #endif
1.25 markus 591:
1.4 dugsong 592: #ifdef AFS
1.25 markus 593: case sKerberosTgtPassing:
594: intptr = &options->kerberos_tgt_passing;
595: goto parse_flag;
596:
597: case sAFSTokenPassing:
598: intptr = &options->afs_token_passing;
599: goto parse_flag;
600: #endif
601:
602: case sPasswordAuthentication:
603: intptr = &options->password_authentication;
1.52 markus 604: goto parse_flag;
605:
606: case sKbdInteractiveAuthentication:
607: intptr = &options->kbd_interactive_authentication;
1.25 markus 608: goto parse_flag;
609:
610: case sCheckMail:
611: intptr = &options->check_mail;
612: goto parse_flag;
1.10 markus 613:
1.63 markus 614: case sChallengeResponseAuthentication:
615: intptr = &options->challenge_reponse_authentication;
1.25 markus 616: goto parse_flag;
617:
618: case sPrintMotd:
619: intptr = &options->print_motd;
1.72 stevesk 620: goto parse_flag;
621:
622: case sPrintLastLog:
623: intptr = &options->print_lastlog;
1.25 markus 624: goto parse_flag;
625:
626: case sX11Forwarding:
627: intptr = &options->x11_forwarding;
628: goto parse_flag;
629:
630: case sX11DisplayOffset:
631: intptr = &options->x11_display_offset;
632: goto parse_int;
633:
1.42 markus 634: case sXAuthLocation:
635: charptr = &options->xauth_location;
636: goto parse_filename;
1.65 stevesk 637:
1.25 markus 638: case sStrictModes:
639: intptr = &options->strict_modes;
640: goto parse_flag;
641:
642: case sKeepAlives:
643: intptr = &options->keepalives;
644: goto parse_flag;
645:
646: case sEmptyPasswd:
647: intptr = &options->permit_empty_passwd;
648: goto parse_flag;
649:
650: case sUseLogin:
651: intptr = &options->use_login;
1.38 markus 652: goto parse_flag;
653:
654: case sGatewayPorts:
655: intptr = &options->gateway_ports;
1.64 markus 656: goto parse_flag;
657:
658: case sReverseMappingCheck:
659: intptr = &options->reverse_mapping_check;
1.25 markus 660: goto parse_flag;
661:
662: case sLogFacility:
663: intptr = (int *) &options->log_facility;
1.48 provos 664: arg = strdelim(&cp);
1.47 ho 665: value = log_facility_number(arg);
1.25 markus 666: if (value == (SyslogFacility) - 1)
1.70 millert 667: fatal("%.200s line %d: unsupported log facility '%s'",
1.47 ho 668: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 669: if (*intptr == -1)
670: *intptr = (SyslogFacility) value;
671: break;
672:
673: case sLogLevel:
674: intptr = (int *) &options->log_level;
1.48 provos 675: arg = strdelim(&cp);
1.47 ho 676: value = log_level_number(arg);
1.25 markus 677: if (value == (LogLevel) - 1)
1.70 millert 678: fatal("%.200s line %d: unsupported log level '%s'",
1.47 ho 679: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 680: if (*intptr == -1)
681: *intptr = (LogLevel) value;
682: break;
1.53 markus 683:
684: case sAllowTcpForwarding:
685: intptr = &options->allow_tcp_forwarding;
686: goto parse_flag;
1.25 markus 687:
688: case sAllowUsers:
1.48 provos 689: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 690: if (options->num_allow_users >= MAX_ALLOW_USERS)
1.70 millert 691: fatal("%s line %d: too many allow users.",
1.33 markus 692: filename, linenum);
1.47 ho 693: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 694: }
695: break;
696:
697: case sDenyUsers:
1.48 provos 698: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 699: if (options->num_deny_users >= MAX_DENY_USERS)
1.70 millert 700: fatal( "%s line %d: too many deny users.",
1.33 markus 701: filename, linenum);
1.47 ho 702: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 703: }
704: break;
705:
706: case sAllowGroups:
1.48 provos 707: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 708: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1.70 millert 709: fatal("%s line %d: too many allow groups.",
1.33 markus 710: filename, linenum);
1.47 ho 711: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 712: }
713: break;
714:
715: case sDenyGroups:
1.48 provos 716: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 717: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1.70 millert 718: fatal("%s line %d: too many deny groups.",
1.33 markus 719: filename, linenum);
1.47 ho 720: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 721: }
1.33 markus 722: break;
723:
724: case sCiphers:
1.48 provos 725: arg = strdelim(&cp);
1.47 ho 726: if (!arg || *arg == '\0')
1.41 markus 727: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 728: if (!ciphers_valid(arg))
1.40 markus 729: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 730: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 731: if (options->ciphers == NULL)
1.47 ho 732: options->ciphers = xstrdup(arg);
1.66 markus 733: break;
734:
735: case sMacs:
736: arg = strdelim(&cp);
737: if (!arg || *arg == '\0')
738: fatal("%s line %d: Missing argument.", filename, linenum);
739: if (!mac_valid(arg))
740: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
741: filename, linenum, arg ? arg : "<NONE>");
742: if (options->macs == NULL)
743: options->macs = xstrdup(arg);
1.33 markus 744: break;
745:
746: case sProtocol:
747: intptr = &options->protocol;
1.48 provos 748: arg = strdelim(&cp);
1.47 ho 749: if (!arg || *arg == '\0')
1.41 markus 750: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 751: value = proto_spec(arg);
1.33 markus 752: if (value == SSH_PROTO_UNKNOWN)
753: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 754: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 755: if (*intptr == SSH_PROTO_UNKNOWN)
756: *intptr = value;
1.43 jakob 757: break;
758:
759: case sSubsystem:
760: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
761: fatal("%s line %d: too many subsystems defined.",
762: filename, linenum);
763: }
1.48 provos 764: arg = strdelim(&cp);
1.47 ho 765: if (!arg || *arg == '\0')
1.43 jakob 766: fatal("%s line %d: Missing subsystem name.",
767: filename, linenum);
768: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 769: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 770: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 771: filename, linenum, arg);
772: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 773: arg = strdelim(&cp);
1.47 ho 774: if (!arg || *arg == '\0')
1.43 jakob 775: fatal("%s line %d: Missing subsystem command.",
776: filename, linenum);
1.47 ho 777: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 778: options->num_subsystems++;
1.25 markus 779: break;
1.46 markus 780:
781: case sMaxStartups:
1.50 markus 782: arg = strdelim(&cp);
783: if (!arg || *arg == '\0')
784: fatal("%s line %d: Missing MaxStartups spec.",
785: filename, linenum);
786: if (sscanf(arg, "%d:%d:%d",
787: &options->max_startups_begin,
788: &options->max_startups_rate,
789: &options->max_startups) == 3) {
790: if (options->max_startups_begin >
791: options->max_startups ||
792: options->max_startups_rate > 100 ||
793: options->max_startups_rate < 1)
794: fatal("%s line %d: Illegal MaxStartups spec.",
795: filename, linenum);
796: break;
797: }
1.46 markus 798: intptr = &options->max_startups;
799: goto parse_int;
1.25 markus 800:
1.57 markus 801: case sBanner:
802: charptr = &options->banner;
803: goto parse_filename;
1.77 ! beck 804: case sClientAliveInterval:
! 805: intptr = &options->client_alive_interval;
! 806: goto parse_int;
! 807: case sClientAliveCountMax:
! 808: intptr = &options->client_alive_count_max;
! 809: goto parse_int;
1.25 markus 810: default:
811: fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
1.47 ho 812: filename, linenum, arg, opcode);
1.25 markus 813: exit(1);
1.13 markus 814: }
1.48 provos 815: if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
1.65 stevesk 816: fprintf(stderr,
1.47 ho 817: "%s line %d: garbage at end of line; \"%.200s\".\n",
818: filename, linenum, arg);
1.25 markus 819: exit(1);
1.13 markus 820: }
1.1 deraadt 821: }
1.25 markus 822: fclose(f);
823: if (bad_options > 0) {
824: fprintf(stderr, "%s: terminating, %d bad configuration options\n",
825: filename, bad_options);
826: exit(1);
1.1 deraadt 827: }
828: }
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