Annotation of src/usr.bin/ssh/servconf.c, Revision 1.78
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"
1.78 ! stevesk 13: RCSID("$OpenBSD: servconf.c,v 1.77 2001/04/13 22:46:53 beck 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:
1.78 ! stevesk 318: error("%s: line %d: Bad configuration option: %s",
! 319: filename, linenum, cp);
1.25 markus 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);
1.78 ! stevesk 418: if (!arg || *arg == '\0')
! 419: fatal("%s line %d: missing integer value.",
! 420: filename, linenum);
1.47 ho 421: value = atoi(arg);
1.25 markus 422: if (*intptr == -1)
423: *intptr = value;
424: break;
425:
426: case sLoginGraceTime:
427: intptr = &options->login_grace_time;
428: goto parse_int;
429:
430: case sKeyRegenerationTime:
431: intptr = &options->key_regeneration_time;
432: goto parse_int;
433:
434: case sListenAddress:
1.48 provos 435: arg = strdelim(&cp);
1.74 stevesk 436: if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
1.70 millert 437: fatal("%s line %d: missing inet addr.",
1.29 markus 438: filename, linenum);
1.74 stevesk 439: if (*arg == '[') {
440: if ((p = strchr(arg, ']')) == NULL)
441: fatal("%s line %d: bad ipv6 inet addr usage.",
442: filename, linenum);
443: arg++;
444: memmove(p, p+1, strlen(p+1)+1);
445: } else if (((p = strchr(arg, ':')) == NULL) ||
446: (strchr(p+1, ':') != NULL)) {
1.76 stevesk 447: add_listen_addr(options, arg, 0);
1.74 stevesk 448: break;
449: }
450: if (*p == ':') {
1.76 stevesk 451: u_short port;
452:
1.74 stevesk 453: p++;
454: if (*p == '\0')
455: fatal("%s line %d: bad inet addr:port usage.",
456: filename, linenum);
457: else {
458: *(p-1) = '\0';
1.76 stevesk 459: if ((port = a2port(p)) == 0)
460: fatal("%s line %d: bad port number.",
461: filename, linenum);
462: add_listen_addr(options, arg, port);
1.74 stevesk 463: }
464: } else if (*p == '\0')
1.76 stevesk 465: add_listen_addr(options, arg, 0);
1.74 stevesk 466: else
467: fatal("%s line %d: bad inet addr usage.",
468: filename, linenum);
1.25 markus 469: break;
470:
471: case sHostKeyFile:
1.54 markus 472: intptr = &options->num_host_key_files;
1.78 ! stevesk 473: if (*intptr >= MAX_HOSTKEYS)
! 474: fatal("%s line %d: too many host keys specified (max %d).",
1.54 markus 475: filename, linenum, MAX_HOSTKEYS);
476: charptr = &options->host_key_files[*intptr];
1.42 markus 477: parse_filename:
1.48 provos 478: arg = strdelim(&cp);
1.78 ! stevesk 479: if (!arg || *arg == '\0')
! 480: fatal("%s line %d: missing file name.",
1.36 markus 481: filename, linenum);
1.54 markus 482: if (*charptr == NULL) {
1.47 ho 483: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 484: /* increase optional counter */
485: if (intptr != NULL)
486: *intptr = *intptr + 1;
487: }
1.36 markus 488: break;
489:
490: case sPidFile:
491: charptr = &options->pid_file;
1.42 markus 492: goto parse_filename;
1.25 markus 493:
494: case sPermitRootLogin:
495: intptr = &options->permit_root_login;
1.48 provos 496: arg = strdelim(&cp);
1.78 ! stevesk 497: if (!arg || *arg == '\0')
! 498: fatal("%s line %d: missing yes/"
1.71 stevesk 499: "without-password/forced-commands-only/no "
1.78 ! stevesk 500: "argument.", filename, linenum);
! 501: value = 0; /* silence compiler */
1.47 ho 502: if (strcmp(arg, "without-password") == 0)
1.67 markus 503: value = PERMIT_NO_PASSWD;
504: else if (strcmp(arg, "forced-commands-only") == 0)
505: value = PERMIT_FORCED_ONLY;
1.47 ho 506: else if (strcmp(arg, "yes") == 0)
1.67 markus 507: value = PERMIT_YES;
1.47 ho 508: else if (strcmp(arg, "no") == 0)
1.67 markus 509: value = PERMIT_NO;
1.78 ! stevesk 510: else
! 511: fatal("%s line %d: Bad yes/"
1.67 markus 512: "without-password/forced-commands-only/no "
1.78 ! stevesk 513: "argument: %s", filename, linenum, arg);
1.25 markus 514: if (*intptr == -1)
515: *intptr = value;
516: break;
517:
518: case sIgnoreRhosts:
519: intptr = &options->ignore_rhosts;
520: parse_flag:
1.48 provos 521: arg = strdelim(&cp);
1.78 ! stevesk 522: if (!arg || *arg == '\0')
! 523: fatal("%s line %d: missing yes/no argument.",
! 524: filename, linenum);
! 525: value = 0; /* silence compiler */
1.47 ho 526: if (strcmp(arg, "yes") == 0)
1.25 markus 527: value = 1;
1.47 ho 528: else if (strcmp(arg, "no") == 0)
1.25 markus 529: value = 0;
1.78 ! stevesk 530: else
! 531: fatal("%s line %d: Bad yes/no argument: %s",
1.47 ho 532: filename, linenum, arg);
1.25 markus 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;
1.77 beck 791: case sClientAliveInterval:
792: intptr = &options->client_alive_interval;
793: goto parse_int;
794: case sClientAliveCountMax:
795: intptr = &options->client_alive_count_max;
796: goto parse_int;
1.25 markus 797: default:
1.78 ! stevesk 798: fatal("%s line %d: Missing handler for opcode %s (%d)",
! 799: filename, linenum, arg, opcode);
1.13 markus 800: }
1.78 ! stevesk 801: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
! 802: fatal("%s line %d: garbage at end of line; \"%.200s\".",
! 803: filename, linenum, arg);
1.1 deraadt 804: }
1.25 markus 805: fclose(f);
1.78 ! stevesk 806: if (bad_options > 0)
! 807: fatal("%s: terminating, %d bad configuration options",
! 808: filename, bad_options);
1.1 deraadt 809: }
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