Annotation of src/usr.bin/ssh/servconf.c, Revision 1.81
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"
1.81 ! stevesk 13: RCSID("$OpenBSD: servconf.c,v 1.80 2001/05/18 14:13:29 markus Exp $");
1.62 markus 14:
15: #ifdef KRB4
16: #include <krb.h>
17: #endif
18: #ifdef AFS
19: #include <kafs.h>
20: #endif
1.1 deraadt 21:
22: #include "ssh.h"
1.62 markus 23: #include "log.h"
1.1 deraadt 24: #include "servconf.h"
25: #include "xmalloc.h"
1.33 markus 26: #include "compat.h"
1.60 markus 27: #include "pathnames.h"
1.62 markus 28: #include "tildexpand.h"
29: #include "misc.h"
30: #include "cipher.h"
1.66 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;
1.80 markus 84: options->challenge_response_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;
1.80 markus 188: if (options->challenge_response_authentication == -1)
189: options->challenge_response_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 "
1.79 stevesk 400: "ListenAdress.", filename, linenum);
1.29 markus 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;
1.81 ! stevesk 428: parse_time:
! 429: arg = strdelim(&cp);
! 430: if (!arg || *arg == '\0')
! 431: fatal("%s line %d: missing time value.",
! 432: filename, linenum);
! 433: if ((value = convtime(arg)) == -1)
! 434: fatal("%s line %d: invalid time value.",
! 435: filename, linenum);
! 436: if (*intptr == -1)
! 437: *intptr = value;
! 438: break;
1.25 markus 439:
440: case sKeyRegenerationTime:
441: intptr = &options->key_regeneration_time;
1.81 ! stevesk 442: goto parse_time;
1.25 markus 443:
444: case sListenAddress:
1.48 provos 445: arg = strdelim(&cp);
1.74 stevesk 446: if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
1.70 millert 447: fatal("%s line %d: missing inet addr.",
1.29 markus 448: filename, linenum);
1.74 stevesk 449: if (*arg == '[') {
450: if ((p = strchr(arg, ']')) == NULL)
451: fatal("%s line %d: bad ipv6 inet addr usage.",
452: filename, linenum);
453: arg++;
454: memmove(p, p+1, strlen(p+1)+1);
455: } else if (((p = strchr(arg, ':')) == NULL) ||
456: (strchr(p+1, ':') != NULL)) {
1.76 stevesk 457: add_listen_addr(options, arg, 0);
1.74 stevesk 458: break;
459: }
460: if (*p == ':') {
1.76 stevesk 461: u_short port;
462:
1.74 stevesk 463: p++;
464: if (*p == '\0')
465: fatal("%s line %d: bad inet addr:port usage.",
466: filename, linenum);
467: else {
468: *(p-1) = '\0';
1.76 stevesk 469: if ((port = a2port(p)) == 0)
470: fatal("%s line %d: bad port number.",
471: filename, linenum);
472: add_listen_addr(options, arg, port);
1.74 stevesk 473: }
474: } else if (*p == '\0')
1.76 stevesk 475: add_listen_addr(options, arg, 0);
1.74 stevesk 476: else
477: fatal("%s line %d: bad inet addr usage.",
478: filename, linenum);
1.25 markus 479: break;
480:
481: case sHostKeyFile:
1.54 markus 482: intptr = &options->num_host_key_files;
1.78 stevesk 483: if (*intptr >= MAX_HOSTKEYS)
484: fatal("%s line %d: too many host keys specified (max %d).",
1.54 markus 485: filename, linenum, MAX_HOSTKEYS);
486: charptr = &options->host_key_files[*intptr];
1.42 markus 487: parse_filename:
1.48 provos 488: arg = strdelim(&cp);
1.78 stevesk 489: if (!arg || *arg == '\0')
490: fatal("%s line %d: missing file name.",
1.36 markus 491: filename, linenum);
1.54 markus 492: if (*charptr == NULL) {
1.47 ho 493: *charptr = tilde_expand_filename(arg, getuid());
1.54 markus 494: /* increase optional counter */
495: if (intptr != NULL)
496: *intptr = *intptr + 1;
497: }
1.36 markus 498: break;
499:
500: case sPidFile:
501: charptr = &options->pid_file;
1.42 markus 502: goto parse_filename;
1.25 markus 503:
504: case sPermitRootLogin:
505: intptr = &options->permit_root_login;
1.48 provos 506: arg = strdelim(&cp);
1.78 stevesk 507: if (!arg || *arg == '\0')
508: fatal("%s line %d: missing yes/"
1.71 stevesk 509: "without-password/forced-commands-only/no "
1.78 stevesk 510: "argument.", filename, linenum);
511: value = 0; /* silence compiler */
1.47 ho 512: if (strcmp(arg, "without-password") == 0)
1.67 markus 513: value = PERMIT_NO_PASSWD;
514: else if (strcmp(arg, "forced-commands-only") == 0)
515: value = PERMIT_FORCED_ONLY;
1.47 ho 516: else if (strcmp(arg, "yes") == 0)
1.67 markus 517: value = PERMIT_YES;
1.47 ho 518: else if (strcmp(arg, "no") == 0)
1.67 markus 519: value = PERMIT_NO;
1.78 stevesk 520: else
521: fatal("%s line %d: Bad yes/"
1.67 markus 522: "without-password/forced-commands-only/no "
1.78 stevesk 523: "argument: %s", filename, linenum, arg);
1.25 markus 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);
1.78 stevesk 532: if (!arg || *arg == '\0')
533: fatal("%s line %d: missing yes/no argument.",
534: filename, linenum);
535: value = 0; /* silence compiler */
1.47 ho 536: if (strcmp(arg, "yes") == 0)
1.25 markus 537: value = 1;
1.47 ho 538: else if (strcmp(arg, "no") == 0)
1.25 markus 539: value = 0;
1.78 stevesk 540: else
541: fatal("%s line %d: Bad yes/no argument: %s",
1.47 ho 542: filename, linenum, arg);
1.25 markus 543: if (*intptr == -1)
544: *intptr = value;
545: break;
546:
547: case sIgnoreUserKnownHosts:
548: intptr = &options->ignore_user_known_hosts;
1.31 markus 549: goto parse_flag;
1.25 markus 550:
551: case sRhostsAuthentication:
552: intptr = &options->rhosts_authentication;
553: goto parse_flag;
554:
555: case sRhostsRSAAuthentication:
556: intptr = &options->rhosts_rsa_authentication;
1.75 markus 557: goto parse_flag;
558:
559: case sHostbasedAuthentication:
560: intptr = &options->hostbased_authentication;
561: goto parse_flag;
562:
563: case sHostbasedUsesNameFromPacketOnly:
564: intptr = &options->hostbased_uses_name_from_packet_only;
1.25 markus 565: goto parse_flag;
566:
567: case sRSAAuthentication:
568: intptr = &options->rsa_authentication;
1.39 markus 569: goto parse_flag;
570:
1.54 markus 571: case sPubkeyAuthentication:
572: intptr = &options->pubkey_authentication;
1.25 markus 573: goto parse_flag;
574:
1.1 deraadt 575: #ifdef KRB4
1.25 markus 576: case sKerberosAuthentication:
577: intptr = &options->kerberos_authentication;
578: goto parse_flag;
579:
580: case sKerberosOrLocalPasswd:
581: intptr = &options->kerberos_or_local_passwd;
582: goto parse_flag;
583:
584: case sKerberosTicketCleanup:
585: intptr = &options->kerberos_ticket_cleanup;
586: goto parse_flag;
1.1 deraadt 587: #endif
1.25 markus 588:
1.4 dugsong 589: #ifdef AFS
1.25 markus 590: case sKerberosTgtPassing:
591: intptr = &options->kerberos_tgt_passing;
592: goto parse_flag;
593:
594: case sAFSTokenPassing:
595: intptr = &options->afs_token_passing;
596: goto parse_flag;
597: #endif
598:
599: case sPasswordAuthentication:
600: intptr = &options->password_authentication;
1.52 markus 601: goto parse_flag;
602:
603: case sKbdInteractiveAuthentication:
604: intptr = &options->kbd_interactive_authentication;
1.25 markus 605: goto parse_flag;
606:
607: case sCheckMail:
608: intptr = &options->check_mail;
609: goto parse_flag;
1.10 markus 610:
1.63 markus 611: case sChallengeResponseAuthentication:
1.80 markus 612: intptr = &options->challenge_response_authentication;
1.25 markus 613: goto parse_flag;
614:
615: case sPrintMotd:
616: intptr = &options->print_motd;
1.72 stevesk 617: goto parse_flag;
618:
619: case sPrintLastLog:
620: intptr = &options->print_lastlog;
1.25 markus 621: goto parse_flag;
622:
623: case sX11Forwarding:
624: intptr = &options->x11_forwarding;
625: goto parse_flag;
626:
627: case sX11DisplayOffset:
628: intptr = &options->x11_display_offset;
629: goto parse_int;
630:
1.42 markus 631: case sXAuthLocation:
632: charptr = &options->xauth_location;
633: goto parse_filename;
1.65 stevesk 634:
1.25 markus 635: case sStrictModes:
636: intptr = &options->strict_modes;
637: goto parse_flag;
638:
639: case sKeepAlives:
640: intptr = &options->keepalives;
641: goto parse_flag;
642:
643: case sEmptyPasswd:
644: intptr = &options->permit_empty_passwd;
645: goto parse_flag;
646:
647: case sUseLogin:
648: intptr = &options->use_login;
1.38 markus 649: goto parse_flag;
650:
651: case sGatewayPorts:
652: intptr = &options->gateway_ports;
1.64 markus 653: goto parse_flag;
654:
655: case sReverseMappingCheck:
656: intptr = &options->reverse_mapping_check;
1.25 markus 657: goto parse_flag;
658:
659: case sLogFacility:
660: intptr = (int *) &options->log_facility;
1.48 provos 661: arg = strdelim(&cp);
1.47 ho 662: value = log_facility_number(arg);
1.25 markus 663: if (value == (SyslogFacility) - 1)
1.70 millert 664: fatal("%.200s line %d: unsupported log facility '%s'",
1.47 ho 665: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 666: if (*intptr == -1)
667: *intptr = (SyslogFacility) value;
668: break;
669:
670: case sLogLevel:
671: intptr = (int *) &options->log_level;
1.48 provos 672: arg = strdelim(&cp);
1.47 ho 673: value = log_level_number(arg);
1.25 markus 674: if (value == (LogLevel) - 1)
1.70 millert 675: fatal("%.200s line %d: unsupported log level '%s'",
1.47 ho 676: filename, linenum, arg ? arg : "<NONE>");
1.25 markus 677: if (*intptr == -1)
678: *intptr = (LogLevel) value;
679: break;
1.53 markus 680:
681: case sAllowTcpForwarding:
682: intptr = &options->allow_tcp_forwarding;
683: goto parse_flag;
1.25 markus 684:
685: case sAllowUsers:
1.48 provos 686: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 687: if (options->num_allow_users >= MAX_ALLOW_USERS)
1.70 millert 688: fatal("%s line %d: too many allow users.",
1.33 markus 689: filename, linenum);
1.47 ho 690: options->allow_users[options->num_allow_users++] = xstrdup(arg);
1.25 markus 691: }
692: break;
693:
694: case sDenyUsers:
1.48 provos 695: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 696: if (options->num_deny_users >= MAX_DENY_USERS)
1.70 millert 697: fatal( "%s line %d: too many deny users.",
1.33 markus 698: filename, linenum);
1.47 ho 699: options->deny_users[options->num_deny_users++] = xstrdup(arg);
1.25 markus 700: }
701: break;
702:
703: case sAllowGroups:
1.48 provos 704: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 705: if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
1.70 millert 706: fatal("%s line %d: too many allow groups.",
1.33 markus 707: filename, linenum);
1.47 ho 708: options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
1.25 markus 709: }
710: break;
711:
712: case sDenyGroups:
1.48 provos 713: while ((arg = strdelim(&cp)) && *arg != '\0') {
1.33 markus 714: if (options->num_deny_groups >= MAX_DENY_GROUPS)
1.70 millert 715: fatal("%s line %d: too many deny groups.",
1.33 markus 716: filename, linenum);
1.47 ho 717: options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
1.25 markus 718: }
1.33 markus 719: break;
720:
721: case sCiphers:
1.48 provos 722: arg = strdelim(&cp);
1.47 ho 723: if (!arg || *arg == '\0')
1.41 markus 724: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 725: if (!ciphers_valid(arg))
1.40 markus 726: fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
1.47 ho 727: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 728: if (options->ciphers == NULL)
1.47 ho 729: options->ciphers = xstrdup(arg);
1.66 markus 730: break;
731:
732: case sMacs:
733: arg = strdelim(&cp);
734: if (!arg || *arg == '\0')
735: fatal("%s line %d: Missing argument.", filename, linenum);
736: if (!mac_valid(arg))
737: fatal("%s line %d: Bad SSH2 mac spec '%s'.",
738: filename, linenum, arg ? arg : "<NONE>");
739: if (options->macs == NULL)
740: options->macs = xstrdup(arg);
1.33 markus 741: break;
742:
743: case sProtocol:
744: intptr = &options->protocol;
1.48 provos 745: arg = strdelim(&cp);
1.47 ho 746: if (!arg || *arg == '\0')
1.41 markus 747: fatal("%s line %d: Missing argument.", filename, linenum);
1.47 ho 748: value = proto_spec(arg);
1.33 markus 749: if (value == SSH_PROTO_UNKNOWN)
750: fatal("%s line %d: Bad protocol spec '%s'.",
1.47 ho 751: filename, linenum, arg ? arg : "<NONE>");
1.33 markus 752: if (*intptr == SSH_PROTO_UNKNOWN)
753: *intptr = value;
1.43 jakob 754: break;
755:
756: case sSubsystem:
757: if(options->num_subsystems >= MAX_SUBSYSTEMS) {
758: fatal("%s line %d: too many subsystems defined.",
759: filename, linenum);
760: }
1.48 provos 761: arg = strdelim(&cp);
1.47 ho 762: if (!arg || *arg == '\0')
1.43 jakob 763: fatal("%s line %d: Missing subsystem name.",
764: filename, linenum);
765: for (i = 0; i < options->num_subsystems; i++)
1.47 ho 766: if(strcmp(arg, options->subsystem_name[i]) == 0)
1.43 jakob 767: fatal("%s line %d: Subsystem '%s' already defined.",
1.47 ho 768: filename, linenum, arg);
769: options->subsystem_name[options->num_subsystems] = xstrdup(arg);
1.48 provos 770: arg = strdelim(&cp);
1.47 ho 771: if (!arg || *arg == '\0')
1.43 jakob 772: fatal("%s line %d: Missing subsystem command.",
773: filename, linenum);
1.47 ho 774: options->subsystem_command[options->num_subsystems] = xstrdup(arg);
1.43 jakob 775: options->num_subsystems++;
1.25 markus 776: break;
1.46 markus 777:
778: case sMaxStartups:
1.50 markus 779: arg = strdelim(&cp);
780: if (!arg || *arg == '\0')
781: fatal("%s line %d: Missing MaxStartups spec.",
782: filename, linenum);
783: if (sscanf(arg, "%d:%d:%d",
784: &options->max_startups_begin,
785: &options->max_startups_rate,
786: &options->max_startups) == 3) {
787: if (options->max_startups_begin >
788: options->max_startups ||
789: options->max_startups_rate > 100 ||
790: options->max_startups_rate < 1)
791: fatal("%s line %d: Illegal MaxStartups spec.",
792: filename, linenum);
793: break;
794: }
1.46 markus 795: intptr = &options->max_startups;
796: goto parse_int;
1.25 markus 797:
1.57 markus 798: case sBanner:
799: charptr = &options->banner;
800: goto parse_filename;
1.81 ! stevesk 801:
1.77 beck 802: case sClientAliveInterval:
803: intptr = &options->client_alive_interval;
1.81 ! stevesk 804: goto parse_time;
! 805:
1.77 beck 806: case sClientAliveCountMax:
807: intptr = &options->client_alive_count_max;
808: goto parse_int;
1.81 ! stevesk 809:
1.25 markus 810: default:
1.78 stevesk 811: fatal("%s line %d: Missing handler for opcode %s (%d)",
812: filename, linenum, arg, opcode);
1.13 markus 813: }
1.78 stevesk 814: if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
815: fatal("%s line %d: garbage at end of line; \"%.200s\".",
816: filename, linenum, arg);
1.1 deraadt 817: }
1.25 markus 818: fclose(f);
1.78 stevesk 819: if (bad_options > 0)
820: fatal("%s: terminating, %d bad configuration options",
821: filename, bad_options);
1.1 deraadt 822: }
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