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8efc0c15 | 1 | /* |
5260325f | 2 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
3 | * All rights reserved | |
6ae2364d | 4 | * |
bcbf86ec | 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". | |
5260325f | 10 | */ |
8efc0c15 | 11 | |
12 | #include "includes.h" | |
8efc0c15 | 13 | |
14 | #include "ssh.h" | |
42f11eb2 | 15 | #include "log.h" |
8efc0c15 | 16 | #include "servconf.h" |
17 | #include "xmalloc.h" | |
a8be9f80 | 18 | #include "compat.h" |
42f11eb2 | 19 | #include "pathnames.h" |
42f11eb2 | 20 | #include "misc.h" |
21 | #include "cipher.h" | |
b2552997 | 22 | #include "kex.h" |
23 | #include "mac.h" | |
42f11eb2 | 24 | |
396c147e | 25 | static void add_listen_addr(ServerOptions *, char *, u_short); |
26 | static void add_one_listen_addr(ServerOptions *, char *, u_short); | |
48e671d5 | 27 | |
1853d1ef | 28 | /* Use of privilege separation or not */ |
29 | extern int use_privsep; | |
42f11eb2 | 30 | |
8efc0c15 | 31 | /* Initializes the server options to their default values. */ |
32 | ||
6ae2364d | 33 | void |
5260325f | 34 | initialize_server_options(ServerOptions *options) |
8efc0c15 | 35 | { |
5260325f | 36 | memset(options, 0, sizeof(*options)); |
e15895cd | 37 | |
38 | /* Portable-specific options */ | |
7fceb20d | 39 | options->use_pam = -1; |
e15895cd | 40 | |
41 | /* Standard Options */ | |
48e671d5 | 42 | options->num_ports = 0; |
43 | options->ports_from_cmdline = 0; | |
44 | options->listen_addrs = NULL; | |
31b41ceb | 45 | options->address_family = -1; |
fa08c86b | 46 | options->num_host_key_files = 0; |
0fbe8c74 | 47 | options->pid_file = NULL; |
5260325f | 48 | options->server_key_bits = -1; |
49 | options->login_grace_time = -1; | |
50 | options->key_regeneration_time = -1; | |
15853e93 | 51 | options->permit_root_login = PERMIT_NOT_SET; |
5260325f | 52 | options->ignore_rhosts = -1; |
53 | options->ignore_user_known_hosts = -1; | |
54 | options->print_motd = -1; | |
4f4648f9 | 55 | options->print_lastlog = -1; |
5260325f | 56 | options->x11_forwarding = -1; |
57 | options->x11_display_offset = -1; | |
e6e573bd | 58 | options->x11_use_localhost = -1; |
fa649821 | 59 | options->xauth_location = NULL; |
5260325f | 60 | options->strict_modes = -1; |
fd573618 | 61 | options->tcp_keep_alive = -1; |
5eaf8578 | 62 | options->log_facility = SYSLOG_FACILITY_NOT_SET; |
63 | options->log_level = SYSLOG_LEVEL_NOT_SET; | |
5260325f | 64 | options->rhosts_rsa_authentication = -1; |
8002af61 | 65 | options->hostbased_authentication = -1; |
66 | options->hostbased_uses_name_from_packet_only = -1; | |
5260325f | 67 | options->rsa_authentication = -1; |
fa08c86b | 68 | options->pubkey_authentication = -1; |
5260325f | 69 | options->kerberos_authentication = -1; |
70 | options->kerberos_or_local_passwd = -1; | |
71 | options->kerberos_ticket_cleanup = -1; | |
a1e30b47 | 72 | options->kerberos_get_afs_token = -1; |
7364bd04 | 73 | options->gss_authentication=-1; |
74 | options->gss_cleanup_creds = -1; | |
5260325f | 75 | options->password_authentication = -1; |
94ec8c6b | 76 | options->kbd_interactive_authentication = -1; |
5ba55ada | 77 | options->challenge_response_authentication = -1; |
5260325f | 78 | options->permit_empty_passwd = -1; |
f00bab84 | 79 | options->permit_user_env = -1; |
5260325f | 80 | options->use_login = -1; |
636f76ca | 81 | options->compression = -1; |
33de75a3 | 82 | options->allow_tcp_forwarding = -1; |
5260325f | 83 | options->num_allow_users = 0; |
84 | options->num_deny_users = 0; | |
85 | options->num_allow_groups = 0; | |
86 | options->num_deny_groups = 0; | |
a8be9f80 | 87 | options->ciphers = NULL; |
b2552997 | 88 | options->macs = NULL; |
a8be9f80 | 89 | options->protocol = SSH_PROTO_UNKNOWN; |
1d1ffb87 | 90 | options->gateway_ports = -1; |
38c295d6 | 91 | options->num_subsystems = 0; |
c345cf9d | 92 | options->max_startups_begin = -1; |
93 | options->max_startups_rate = -1; | |
089fbbd2 | 94 | options->max_startups = -1; |
af4bd935 | 95 | options->max_authtries = -1; |
eea39c02 | 96 | options->banner = NULL; |
c5a7d788 | 97 | options->use_dns = -1; |
3ffc6336 | 98 | options->client_alive_interval = -1; |
99 | options->client_alive_count_max = -1; | |
c8445989 | 100 | options->authorized_keys_file = NULL; |
101 | options->authorized_keys_file2 = NULL; | |
61a2c1da | 102 | options->num_accept_env = 0; |
d20f3c9e | 103 | options->permit_tun = -1; |
1853d1ef | 104 | |
1853d1ef | 105 | /* Needs to be accessable in many places */ |
106 | use_privsep = -1; | |
8efc0c15 | 107 | } |
108 | ||
6ae2364d | 109 | void |
5260325f | 110 | fill_default_server_options(ServerOptions *options) |
8efc0c15 | 111 | { |
e15895cd | 112 | /* Portable-specific options */ |
7fceb20d | 113 | if (options->use_pam == -1) |
0a23d79f | 114 | options->use_pam = 0; |
e15895cd | 115 | |
116 | /* Standard Options */ | |
fa08c86b | 117 | if (options->protocol == SSH_PROTO_UNKNOWN) |
118 | options->protocol = SSH_PROTO_1|SSH_PROTO_2; | |
119 | if (options->num_host_key_files == 0) { | |
120 | /* fill default hostkeys for protocols */ | |
121 | if (options->protocol & SSH_PROTO_1) | |
0f84fe37 | 122 | options->host_key_files[options->num_host_key_files++] = |
123 | _PATH_HOST_KEY_FILE; | |
124 | if (options->protocol & SSH_PROTO_2) { | |
125 | options->host_key_files[options->num_host_key_files++] = | |
126 | _PATH_HOST_RSA_KEY_FILE; | |
127 | options->host_key_files[options->num_host_key_files++] = | |
128 | _PATH_HOST_DSA_KEY_FILE; | |
129 | } | |
fa08c86b | 130 | } |
48e671d5 | 131 | if (options->num_ports == 0) |
132 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
133 | if (options->listen_addrs == NULL) | |
2d2a2c65 | 134 | add_listen_addr(options, NULL, 0); |
0fbe8c74 | 135 | if (options->pid_file == NULL) |
42f11eb2 | 136 | options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
5260325f | 137 | if (options->server_key_bits == -1) |
138 | options->server_key_bits = 768; | |
139 | if (options->login_grace_time == -1) | |
3445ca02 | 140 | options->login_grace_time = 120; |
5260325f | 141 | if (options->key_regeneration_time == -1) |
142 | options->key_regeneration_time = 3600; | |
15853e93 | 143 | if (options->permit_root_login == PERMIT_NOT_SET) |
144 | options->permit_root_login = PERMIT_YES; | |
5260325f | 145 | if (options->ignore_rhosts == -1) |
c8d54615 | 146 | options->ignore_rhosts = 1; |
5260325f | 147 | if (options->ignore_user_known_hosts == -1) |
148 | options->ignore_user_known_hosts = 0; | |
5260325f | 149 | if (options->print_motd == -1) |
150 | options->print_motd = 1; | |
4f4648f9 | 151 | if (options->print_lastlog == -1) |
152 | options->print_lastlog = 1; | |
5260325f | 153 | if (options->x11_forwarding == -1) |
c8d54615 | 154 | options->x11_forwarding = 0; |
5260325f | 155 | if (options->x11_display_offset == -1) |
c8d54615 | 156 | options->x11_display_offset = 10; |
e6e573bd | 157 | if (options->x11_use_localhost == -1) |
158 | options->x11_use_localhost = 1; | |
fa649821 | 159 | if (options->xauth_location == NULL) |
fd9ede94 | 160 | options->xauth_location = _PATH_XAUTH; |
5260325f | 161 | if (options->strict_modes == -1) |
162 | options->strict_modes = 1; | |
fd573618 | 163 | if (options->tcp_keep_alive == -1) |
164 | options->tcp_keep_alive = 1; | |
5eaf8578 | 165 | if (options->log_facility == SYSLOG_FACILITY_NOT_SET) |
5260325f | 166 | options->log_facility = SYSLOG_FACILITY_AUTH; |
5eaf8578 | 167 | if (options->log_level == SYSLOG_LEVEL_NOT_SET) |
59c97189 | 168 | options->log_level = SYSLOG_LEVEL_INFO; |
5260325f | 169 | if (options->rhosts_rsa_authentication == -1) |
c8d54615 | 170 | options->rhosts_rsa_authentication = 0; |
8002af61 | 171 | if (options->hostbased_authentication == -1) |
172 | options->hostbased_authentication = 0; | |
173 | if (options->hostbased_uses_name_from_packet_only == -1) | |
174 | options->hostbased_uses_name_from_packet_only = 0; | |
5260325f | 175 | if (options->rsa_authentication == -1) |
176 | options->rsa_authentication = 1; | |
fa08c86b | 177 | if (options->pubkey_authentication == -1) |
178 | options->pubkey_authentication = 1; | |
5260325f | 179 | if (options->kerberos_authentication == -1) |
eadc806d | 180 | options->kerberos_authentication = 0; |
5260325f | 181 | if (options->kerberos_or_local_passwd == -1) |
182 | options->kerberos_or_local_passwd = 1; | |
183 | if (options->kerberos_ticket_cleanup == -1) | |
184 | options->kerberos_ticket_cleanup = 1; | |
a1e30b47 | 185 | if (options->kerberos_get_afs_token == -1) |
186 | options->kerberos_get_afs_token = 0; | |
7364bd04 | 187 | if (options->gss_authentication == -1) |
188 | options->gss_authentication = 0; | |
189 | if (options->gss_cleanup_creds == -1) | |
190 | options->gss_cleanup_creds = 1; | |
5260325f | 191 | if (options->password_authentication == -1) |
192 | options->password_authentication = 1; | |
94ec8c6b | 193 | if (options->kbd_interactive_authentication == -1) |
194 | options->kbd_interactive_authentication = 0; | |
5ba55ada | 195 | if (options->challenge_response_authentication == -1) |
196 | options->challenge_response_authentication = 1; | |
5260325f | 197 | if (options->permit_empty_passwd == -1) |
c8d54615 | 198 | options->permit_empty_passwd = 0; |
f00bab84 | 199 | if (options->permit_user_env == -1) |
200 | options->permit_user_env = 0; | |
5260325f | 201 | if (options->use_login == -1) |
202 | options->use_login = 0; | |
636f76ca | 203 | if (options->compression == -1) |
07200973 | 204 | options->compression = COMP_DELAYED; |
33de75a3 | 205 | if (options->allow_tcp_forwarding == -1) |
206 | options->allow_tcp_forwarding = 1; | |
1d1ffb87 | 207 | if (options->gateway_ports == -1) |
208 | options->gateway_ports = 0; | |
089fbbd2 | 209 | if (options->max_startups == -1) |
210 | options->max_startups = 10; | |
c345cf9d | 211 | if (options->max_startups_rate == -1) |
212 | options->max_startups_rate = 100; /* 100% */ | |
213 | if (options->max_startups_begin == -1) | |
214 | options->max_startups_begin = options->max_startups; | |
af4bd935 | 215 | if (options->max_authtries == -1) |
216 | options->max_authtries = DEFAULT_AUTH_FAIL_MAX; | |
c5a7d788 | 217 | if (options->use_dns == -1) |
218 | options->use_dns = 1; | |
3ffc6336 | 219 | if (options->client_alive_interval == -1) |
184eed6a | 220 | options->client_alive_interval = 0; |
3ffc6336 | 221 | if (options->client_alive_count_max == -1) |
222 | options->client_alive_count_max = 3; | |
5df83e07 | 223 | if (options->authorized_keys_file2 == NULL) { |
224 | /* authorized_keys_file2 falls back to authorized_keys_file */ | |
225 | if (options->authorized_keys_file != NULL) | |
226 | options->authorized_keys_file2 = options->authorized_keys_file; | |
227 | else | |
228 | options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2; | |
229 | } | |
230 | if (options->authorized_keys_file == NULL) | |
231 | options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS; | |
d20f3c9e | 232 | if (options->permit_tun == -1) |
a4f24bf8 | 233 | options->permit_tun = SSH_TUNMODE_NO; |
1853d1ef | 234 | |
2ee1b704 | 235 | /* Turn privilege separation on by default */ |
1853d1ef | 236 | if (use_privsep == -1) |
2ee1b704 | 237 | use_privsep = 1; |
e299a298 | 238 | |
4165b82e | 239 | #ifndef HAVE_MMAP |
e299a298 | 240 | if (use_privsep && options->compression == 1) { |
241 | error("This platform does not support both privilege " | |
242 | "separation and compression"); | |
243 | error("Compression disabled"); | |
244 | options->compression = 0; | |
245 | } | |
246 | #endif | |
247 | ||
8efc0c15 | 248 | } |
249 | ||
8efc0c15 | 250 | /* Keyword tokens. */ |
5260325f | 251 | typedef enum { |
252 | sBadOption, /* == unknown option */ | |
e15895cd | 253 | /* Portable-specific options */ |
7fceb20d | 254 | sUsePAM, |
e15895cd | 255 | /* Standard Options */ |
5260325f | 256 | sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, |
257 | sPermitRootLogin, sLogFacility, sLogLevel, | |
0598d99d | 258 | sRhostsRSAAuthentication, sRSAAuthentication, |
5260325f | 259 | sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
a1e30b47 | 260 | sKerberosGetAFSToken, |
1c590258 | 261 | sKerberosTgtPassing, sChallengeResponseAuthentication, |
31b41ceb | 262 | sPasswordAuthentication, sKbdInteractiveAuthentication, |
263 | sListenAddress, sAddressFamily, | |
4f4648f9 | 264 | sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
e6e573bd | 265 | sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost, |
fd573618 | 266 | sStrictModes, sEmptyPasswd, sTCPKeepAlive, |
f00bab84 | 267 | sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression, |
33de75a3 | 268 | sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
b2552997 | 269 | sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
af4bd935 | 270 | sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, |
271 | sMaxStartups, sMaxAuthTries, | |
c5a7d788 | 272 | sBanner, sUseDNS, sHostbasedAuthentication, |
184eed6a | 273 | sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
c8445989 | 274 | sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2, |
d20f3c9e | 275 | sGssAuthentication, sGssCleanupCreds, sAcceptEnv, sPermitTunnel, |
2ea6de2b | 276 | sUsePrivilegeSeparation, |
a2144546 | 277 | sDeprecated, sUnsupported |
8efc0c15 | 278 | } ServerOpCodes; |
279 | ||
280 | /* Textual representation of the tokens. */ | |
5260325f | 281 | static struct { |
282 | const char *name; | |
283 | ServerOpCodes opcode; | |
284 | } keywords[] = { | |
e15895cd | 285 | /* Portable-specific options */ |
b06b11ad | 286 | #ifdef USE_PAM |
fe46678b | 287 | { "usepam", sUsePAM }, |
b06b11ad | 288 | #else |
fe46678b | 289 | { "usepam", sUnsupported }, |
b06b11ad | 290 | #endif |
fe46678b | 291 | { "pamauthenticationviakbdint", sDeprecated }, |
e15895cd | 292 | /* Standard Options */ |
5260325f | 293 | { "port", sPort }, |
294 | { "hostkey", sHostKeyFile }, | |
fa08c86b | 295 | { "hostdsakey", sHostKeyFile }, /* alias */ |
2b87da3b | 296 | { "pidfile", sPidFile }, |
5260325f | 297 | { "serverkeybits", sServerKeyBits }, |
298 | { "logingracetime", sLoginGraceTime }, | |
299 | { "keyregenerationinterval", sKeyRegenerationTime }, | |
300 | { "permitrootlogin", sPermitRootLogin }, | |
301 | { "syslogfacility", sLogFacility }, | |
302 | { "loglevel", sLogLevel }, | |
0598d99d | 303 | { "rhostsauthentication", sDeprecated }, |
5260325f | 304 | { "rhostsrsaauthentication", sRhostsRSAAuthentication }, |
8002af61 | 305 | { "hostbasedauthentication", sHostbasedAuthentication }, |
306 | { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly }, | |
5260325f | 307 | { "rsaauthentication", sRSAAuthentication }, |
fa08c86b | 308 | { "pubkeyauthentication", sPubkeyAuthentication }, |
309 | { "dsaauthentication", sPubkeyAuthentication }, /* alias */ | |
1c590258 | 310 | #ifdef KRB5 |
5260325f | 311 | { "kerberosauthentication", sKerberosAuthentication }, |
312 | { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, | |
313 | { "kerberosticketcleanup", sKerberosTicketCleanup }, | |
bcfcc5f9 | 314 | #ifdef USE_AFS |
a1e30b47 | 315 | { "kerberosgetafstoken", sKerberosGetAFSToken }, |
309af4e5 | 316 | #else |
317 | { "kerberosgetafstoken", sUnsupported }, | |
318 | #endif | |
a2144546 | 319 | #else |
320 | { "kerberosauthentication", sUnsupported }, | |
321 | { "kerberosorlocalpasswd", sUnsupported }, | |
322 | { "kerberosticketcleanup", sUnsupported }, | |
a1e30b47 | 323 | { "kerberosgetafstoken", sUnsupported }, |
a2144546 | 324 | #endif |
8f73f7bb | 325 | { "kerberostgtpassing", sUnsupported }, |
a2144546 | 326 | { "afstokenpassing", sUnsupported }, |
7364bd04 | 327 | #ifdef GSSAPI |
328 | { "gssapiauthentication", sGssAuthentication }, | |
e377c083 | 329 | { "gssapicleanupcredentials", sGssCleanupCreds }, |
7364bd04 | 330 | #else |
331 | { "gssapiauthentication", sUnsupported }, | |
e377c083 | 332 | { "gssapicleanupcredentials", sUnsupported }, |
7364bd04 | 333 | #endif |
5260325f | 334 | { "passwordauthentication", sPasswordAuthentication }, |
94ec8c6b | 335 | { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
d464095c | 336 | { "challengeresponseauthentication", sChallengeResponseAuthentication }, |
337 | { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ | |
5c53a31e | 338 | { "checkmail", sDeprecated }, |
5260325f | 339 | { "listenaddress", sListenAddress }, |
31b41ceb | 340 | { "addressfamily", sAddressFamily }, |
5260325f | 341 | { "printmotd", sPrintMotd }, |
4f4648f9 | 342 | { "printlastlog", sPrintLastLog }, |
5260325f | 343 | { "ignorerhosts", sIgnoreRhosts }, |
344 | { "ignoreuserknownhosts", sIgnoreUserKnownHosts }, | |
345 | { "x11forwarding", sX11Forwarding }, | |
346 | { "x11displayoffset", sX11DisplayOffset }, | |
e6e573bd | 347 | { "x11uselocalhost", sX11UseLocalhost }, |
fa649821 | 348 | { "xauthlocation", sXAuthLocation }, |
5260325f | 349 | { "strictmodes", sStrictModes }, |
350 | { "permitemptypasswords", sEmptyPasswd }, | |
f00bab84 | 351 | { "permituserenvironment", sPermitUserEnvironment }, |
5260325f | 352 | { "uselogin", sUseLogin }, |
636f76ca | 353 | { "compression", sCompression }, |
fd573618 | 354 | { "tcpkeepalive", sTCPKeepAlive }, |
355 | { "keepalive", sTCPKeepAlive }, /* obsolete alias */ | |
33de75a3 | 356 | { "allowtcpforwarding", sAllowTcpForwarding }, |
5260325f | 357 | { "allowusers", sAllowUsers }, |
358 | { "denyusers", sDenyUsers }, | |
359 | { "allowgroups", sAllowGroups }, | |
360 | { "denygroups", sDenyGroups }, | |
a8be9f80 | 361 | { "ciphers", sCiphers }, |
b2552997 | 362 | { "macs", sMacs }, |
a8be9f80 | 363 | { "protocol", sProtocol }, |
1d1ffb87 | 364 | { "gatewayports", sGatewayPorts }, |
38c295d6 | 365 | { "subsystem", sSubsystem }, |
089fbbd2 | 366 | { "maxstartups", sMaxStartups }, |
af4bd935 | 367 | { "maxauthtries", sMaxAuthTries }, |
eea39c02 | 368 | { "banner", sBanner }, |
c5a7d788 | 369 | { "usedns", sUseDNS }, |
370 | { "verifyreversemapping", sDeprecated }, | |
371 | { "reversemappingcheck", sDeprecated }, | |
3ffc6336 | 372 | { "clientaliveinterval", sClientAliveInterval }, |
373 | { "clientalivecountmax", sClientAliveCountMax }, | |
c8445989 | 374 | { "authorizedkeysfile", sAuthorizedKeysFile }, |
375 | { "authorizedkeysfile2", sAuthorizedKeysFile2 }, | |
1853d1ef | 376 | { "useprivilegeseparation", sUsePrivilegeSeparation}, |
61a2c1da | 377 | { "acceptenv", sAcceptEnv }, |
d20f3c9e | 378 | { "permittunnel", sPermitTunnel }, |
17a3011c | 379 | { NULL, sBadOption } |
8efc0c15 | 380 | }; |
381 | ||
aa3378df | 382 | /* |
6be9a5e8 | 383 | * Returns the number of the token pointed to by cp or sBadOption. |
aa3378df | 384 | */ |
8efc0c15 | 385 | |
6ae2364d | 386 | static ServerOpCodes |
5260325f | 387 | parse_token(const char *cp, const char *filename, |
388 | int linenum) | |
8efc0c15 | 389 | { |
1e3b8b07 | 390 | u_int i; |
8efc0c15 | 391 | |
5260325f | 392 | for (i = 0; keywords[i].name; i++) |
aa3378df | 393 | if (strcasecmp(cp, keywords[i].name) == 0) |
5260325f | 394 | return keywords[i].opcode; |
8efc0c15 | 395 | |
b7c70970 | 396 | error("%s: line %d: Bad configuration option: %s", |
397 | filename, linenum, cp); | |
5260325f | 398 | return sBadOption; |
8efc0c15 | 399 | } |
400 | ||
396c147e | 401 | static void |
2d2a2c65 | 402 | add_listen_addr(ServerOptions *options, char *addr, u_short port) |
48e671d5 | 403 | { |
2ceb8101 | 404 | u_int i; |
48e671d5 | 405 | |
406 | if (options->num_ports == 0) | |
407 | options->ports[options->num_ports++] = SSH_DEFAULT_PORT; | |
31b41ceb | 408 | if (options->address_family == -1) |
409 | options->address_family = AF_UNSPEC; | |
2d2a2c65 | 410 | if (port == 0) |
d11c1288 | 411 | for (i = 0; i < options->num_ports; i++) |
412 | add_one_listen_addr(options, addr, options->ports[i]); | |
413 | else | |
2d2a2c65 | 414 | add_one_listen_addr(options, addr, port); |
d11c1288 | 415 | } |
416 | ||
396c147e | 417 | static void |
d11c1288 | 418 | add_one_listen_addr(ServerOptions *options, char *addr, u_short port) |
419 | { | |
420 | struct addrinfo hints, *ai, *aitop; | |
421 | char strport[NI_MAXSERV]; | |
422 | int gaierr; | |
423 | ||
424 | memset(&hints, 0, sizeof(hints)); | |
31b41ceb | 425 | hints.ai_family = options->address_family; |
d11c1288 | 426 | hints.ai_socktype = SOCK_STREAM; |
427 | hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; | |
7528d467 | 428 | snprintf(strport, sizeof strport, "%u", port); |
d11c1288 | 429 | if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) |
430 | fatal("bad addr or host: %s (%s)", | |
431 | addr ? addr : "<NULL>", | |
432 | gai_strerror(gaierr)); | |
433 | for (ai = aitop; ai->ai_next; ai = ai->ai_next) | |
434 | ; | |
435 | ai->ai_next = options->listen_addrs; | |
436 | options->listen_addrs = aitop; | |
48e671d5 | 437 | } |
438 | ||
2717fa0f | 439 | int |
440 | process_server_config_line(ServerOptions *options, char *line, | |
441 | const char *filename, int linenum) | |
8efc0c15 | 442 | { |
d11c1288 | 443 | char *cp, **charptr, *arg, *p; |
2ceb8101 | 444 | int *intptr, value, n; |
5260325f | 445 | ServerOpCodes opcode; |
3867aa0a | 446 | u_short port; |
2ceb8101 | 447 | u_int i; |
5260325f | 448 | |
2717fa0f | 449 | cp = line; |
88299971 | 450 | if ((arg = strdelim(&cp)) != NULL) |
451 | return 0; | |
2717fa0f | 452 | /* Ignore leading whitespace */ |
453 | if (*arg == '\0') | |
704b1659 | 454 | arg = strdelim(&cp); |
2717fa0f | 455 | if (!arg || !*arg || *arg == '#') |
456 | return 0; | |
457 | intptr = NULL; | |
458 | charptr = NULL; | |
459 | opcode = parse_token(arg, filename, linenum); | |
460 | switch (opcode) { | |
461 | /* Portable-specific options */ | |
7fceb20d | 462 | case sUsePAM: |
463 | intptr = &options->use_pam; | |
2717fa0f | 464 | goto parse_flag; |
48e671d5 | 465 | |
2717fa0f | 466 | /* Standard Options */ |
467 | case sBadOption: | |
468 | return -1; | |
469 | case sPort: | |
470 | /* ignore ports from configfile if cmdline specifies ports */ | |
471 | if (options->ports_from_cmdline) | |
472 | return 0; | |
473 | if (options->listen_addrs != NULL) | |
474 | fatal("%s line %d: ports must be specified before " | |
3a454b6a | 475 | "ListenAddress.", filename, linenum); |
2717fa0f | 476 | if (options->num_ports >= MAX_PORTS) |
477 | fatal("%s line %d: too many ports.", | |
478 | filename, linenum); | |
479 | arg = strdelim(&cp); | |
480 | if (!arg || *arg == '\0') | |
481 | fatal("%s line %d: missing port number.", | |
482 | filename, linenum); | |
483 | options->ports[options->num_ports++] = a2port(arg); | |
484 | if (options->ports[options->num_ports-1] == 0) | |
485 | fatal("%s line %d: Badly formatted port number.", | |
486 | filename, linenum); | |
487 | break; | |
488 | ||
489 | case sServerKeyBits: | |
490 | intptr = &options->server_key_bits; | |
5260325f | 491 | parse_int: |
2717fa0f | 492 | arg = strdelim(&cp); |
493 | if (!arg || *arg == '\0') | |
494 | fatal("%s line %d: missing integer value.", | |
495 | filename, linenum); | |
496 | value = atoi(arg); | |
497 | if (*intptr == -1) | |
498 | *intptr = value; | |
499 | break; | |
500 | ||
501 | case sLoginGraceTime: | |
502 | intptr = &options->login_grace_time; | |
e2b1fb42 | 503 | parse_time: |
2717fa0f | 504 | arg = strdelim(&cp); |
505 | if (!arg || *arg == '\0') | |
506 | fatal("%s line %d: missing time value.", | |
507 | filename, linenum); | |
508 | if ((value = convtime(arg)) == -1) | |
509 | fatal("%s line %d: invalid time value.", | |
510 | filename, linenum); | |
511 | if (*intptr == -1) | |
512 | *intptr = value; | |
513 | break; | |
514 | ||
515 | case sKeyRegenerationTime: | |
516 | intptr = &options->key_regeneration_time; | |
517 | goto parse_time; | |
518 | ||
519 | case sListenAddress: | |
520 | arg = strdelim(&cp); | |
3867aa0a | 521 | if (arg == NULL || *arg == '\0') |
522 | fatal("%s line %d: missing address", | |
2717fa0f | 523 | filename, linenum); |
91135a0e | 524 | /* check for bare IPv6 address: no "[]" and 2 or more ":" */ |
525 | if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL | |
526 | && strchr(p+1, ':') != NULL) { | |
527 | add_listen_addr(options, arg, 0); | |
528 | break; | |
529 | } | |
3867aa0a | 530 | p = hpdelim(&arg); |
531 | if (p == NULL) | |
532 | fatal("%s line %d: bad address:port usage", | |
2717fa0f | 533 | filename, linenum); |
3867aa0a | 534 | p = cleanhostname(p); |
535 | if (arg == NULL) | |
536 | port = 0; | |
537 | else if ((port = a2port(arg)) == 0) | |
538 | fatal("%s line %d: bad port number", filename, linenum); | |
539 | ||
540 | add_listen_addr(options, p, port); | |
541 | ||
2717fa0f | 542 | break; |
543 | ||
31b41ceb | 544 | case sAddressFamily: |
545 | arg = strdelim(&cp); | |
38634ff6 | 546 | if (!arg || *arg == '\0') |
547 | fatal("%s line %d: missing address family.", | |
548 | filename, linenum); | |
31b41ceb | 549 | intptr = &options->address_family; |
550 | if (options->listen_addrs != NULL) | |
551 | fatal("%s line %d: address family must be specified before " | |
552 | "ListenAddress.", filename, linenum); | |
553 | if (strcasecmp(arg, "inet") == 0) | |
554 | value = AF_INET; | |
555 | else if (strcasecmp(arg, "inet6") == 0) | |
556 | value = AF_INET6; | |
557 | else if (strcasecmp(arg, "any") == 0) | |
558 | value = AF_UNSPEC; | |
559 | else | |
560 | fatal("%s line %d: unsupported address family \"%s\".", | |
561 | filename, linenum, arg); | |
562 | if (*intptr == -1) | |
563 | *intptr = value; | |
564 | break; | |
565 | ||
2717fa0f | 566 | case sHostKeyFile: |
567 | intptr = &options->num_host_key_files; | |
568 | if (*intptr >= MAX_HOSTKEYS) | |
569 | fatal("%s line %d: too many host keys specified (max %d).", | |
570 | filename, linenum, MAX_HOSTKEYS); | |
571 | charptr = &options->host_key_files[*intptr]; | |
fa649821 | 572 | parse_filename: |
2717fa0f | 573 | arg = strdelim(&cp); |
574 | if (!arg || *arg == '\0') | |
575 | fatal("%s line %d: missing file name.", | |
576 | filename, linenum); | |
577 | if (*charptr == NULL) { | |
578 | *charptr = tilde_expand_filename(arg, getuid()); | |
579 | /* increase optional counter */ | |
580 | if (intptr != NULL) | |
581 | *intptr = *intptr + 1; | |
582 | } | |
583 | break; | |
0fbe8c74 | 584 | |
2717fa0f | 585 | case sPidFile: |
586 | charptr = &options->pid_file; | |
587 | goto parse_filename; | |
5260325f | 588 | |
2717fa0f | 589 | case sPermitRootLogin: |
590 | intptr = &options->permit_root_login; | |
591 | arg = strdelim(&cp); | |
592 | if (!arg || *arg == '\0') | |
593 | fatal("%s line %d: missing yes/" | |
594 | "without-password/forced-commands-only/no " | |
595 | "argument.", filename, linenum); | |
596 | value = 0; /* silence compiler */ | |
597 | if (strcmp(arg, "without-password") == 0) | |
598 | value = PERMIT_NO_PASSWD; | |
599 | else if (strcmp(arg, "forced-commands-only") == 0) | |
600 | value = PERMIT_FORCED_ONLY; | |
601 | else if (strcmp(arg, "yes") == 0) | |
602 | value = PERMIT_YES; | |
603 | else if (strcmp(arg, "no") == 0) | |
604 | value = PERMIT_NO; | |
605 | else | |
606 | fatal("%s line %d: Bad yes/" | |
607 | "without-password/forced-commands-only/no " | |
608 | "argument: %s", filename, linenum, arg); | |
609 | if (*intptr == -1) | |
610 | *intptr = value; | |
611 | break; | |
612 | ||
613 | case sIgnoreRhosts: | |
614 | intptr = &options->ignore_rhosts; | |
5260325f | 615 | parse_flag: |
2717fa0f | 616 | arg = strdelim(&cp); |
617 | if (!arg || *arg == '\0') | |
618 | fatal("%s line %d: missing yes/no argument.", | |
619 | filename, linenum); | |
620 | value = 0; /* silence compiler */ | |
621 | if (strcmp(arg, "yes") == 0) | |
622 | value = 1; | |
623 | else if (strcmp(arg, "no") == 0) | |
624 | value = 0; | |
625 | else | |
626 | fatal("%s line %d: Bad yes/no argument: %s", | |
627 | filename, linenum, arg); | |
628 | if (*intptr == -1) | |
629 | *intptr = value; | |
630 | break; | |
631 | ||
632 | case sIgnoreUserKnownHosts: | |
633 | intptr = &options->ignore_user_known_hosts; | |
634 | goto parse_flag; | |
635 | ||
2717fa0f | 636 | case sRhostsRSAAuthentication: |
637 | intptr = &options->rhosts_rsa_authentication; | |
638 | goto parse_flag; | |
639 | ||
640 | case sHostbasedAuthentication: | |
641 | intptr = &options->hostbased_authentication; | |
642 | goto parse_flag; | |
643 | ||
644 | case sHostbasedUsesNameFromPacketOnly: | |
645 | intptr = &options->hostbased_uses_name_from_packet_only; | |
646 | goto parse_flag; | |
647 | ||
648 | case sRSAAuthentication: | |
649 | intptr = &options->rsa_authentication; | |
650 | goto parse_flag; | |
651 | ||
652 | case sPubkeyAuthentication: | |
653 | intptr = &options->pubkey_authentication; | |
654 | goto parse_flag; | |
d0ec7f42 | 655 | |
2717fa0f | 656 | case sKerberosAuthentication: |
657 | intptr = &options->kerberos_authentication; | |
658 | goto parse_flag; | |
5260325f | 659 | |
2717fa0f | 660 | case sKerberosOrLocalPasswd: |
661 | intptr = &options->kerberos_or_local_passwd; | |
662 | goto parse_flag; | |
5260325f | 663 | |
2717fa0f | 664 | case sKerberosTicketCleanup: |
665 | intptr = &options->kerberos_ticket_cleanup; | |
666 | goto parse_flag; | |
d0ec7f42 | 667 | |
a1e30b47 | 668 | case sKerberosGetAFSToken: |
669 | intptr = &options->kerberos_get_afs_token; | |
670 | goto parse_flag; | |
671 | ||
7364bd04 | 672 | case sGssAuthentication: |
673 | intptr = &options->gss_authentication; | |
674 | goto parse_flag; | |
675 | ||
676 | case sGssCleanupCreds: | |
677 | intptr = &options->gss_cleanup_creds; | |
678 | goto parse_flag; | |
679 | ||
2717fa0f | 680 | case sPasswordAuthentication: |
681 | intptr = &options->password_authentication; | |
682 | goto parse_flag; | |
5260325f | 683 | |
2717fa0f | 684 | case sKbdInteractiveAuthentication: |
685 | intptr = &options->kbd_interactive_authentication; | |
686 | goto parse_flag; | |
8002af61 | 687 | |
2717fa0f | 688 | case sChallengeResponseAuthentication: |
689 | intptr = &options->challenge_response_authentication; | |
690 | goto parse_flag; | |
8002af61 | 691 | |
2717fa0f | 692 | case sPrintMotd: |
693 | intptr = &options->print_motd; | |
694 | goto parse_flag; | |
5260325f | 695 | |
2717fa0f | 696 | case sPrintLastLog: |
697 | intptr = &options->print_lastlog; | |
698 | goto parse_flag; | |
5260325f | 699 | |
2717fa0f | 700 | case sX11Forwarding: |
701 | intptr = &options->x11_forwarding; | |
702 | goto parse_flag; | |
5260325f | 703 | |
2717fa0f | 704 | case sX11DisplayOffset: |
705 | intptr = &options->x11_display_offset; | |
706 | goto parse_int; | |
8efc0c15 | 707 | |
e6e573bd | 708 | case sX11UseLocalhost: |
709 | intptr = &options->x11_use_localhost; | |
710 | goto parse_flag; | |
711 | ||
2717fa0f | 712 | case sXAuthLocation: |
713 | charptr = &options->xauth_location; | |
714 | goto parse_filename; | |
5260325f | 715 | |
2717fa0f | 716 | case sStrictModes: |
717 | intptr = &options->strict_modes; | |
718 | goto parse_flag; | |
5260325f | 719 | |
fd573618 | 720 | case sTCPKeepAlive: |
721 | intptr = &options->tcp_keep_alive; | |
2717fa0f | 722 | goto parse_flag; |
33de75a3 | 723 | |
2717fa0f | 724 | case sEmptyPasswd: |
725 | intptr = &options->permit_empty_passwd; | |
726 | goto parse_flag; | |
5260325f | 727 | |
f00bab84 | 728 | case sPermitUserEnvironment: |
729 | intptr = &options->permit_user_env; | |
730 | goto parse_flag; | |
731 | ||
2717fa0f | 732 | case sUseLogin: |
733 | intptr = &options->use_login; | |
734 | goto parse_flag; | |
5260325f | 735 | |
636f76ca | 736 | case sCompression: |
737 | intptr = &options->compression; | |
07200973 | 738 | arg = strdelim(&cp); |
739 | if (!arg || *arg == '\0') | |
740 | fatal("%s line %d: missing yes/no/delayed " | |
741 | "argument.", filename, linenum); | |
742 | value = 0; /* silence compiler */ | |
743 | if (strcmp(arg, "delayed") == 0) | |
744 | value = COMP_DELAYED; | |
745 | else if (strcmp(arg, "yes") == 0) | |
746 | value = COMP_ZLIB; | |
747 | else if (strcmp(arg, "no") == 0) | |
748 | value = COMP_NONE; | |
749 | else | |
750 | fatal("%s line %d: Bad yes/no/delayed " | |
751 | "argument: %s", filename, linenum, arg); | |
752 | if (*intptr == -1) | |
753 | *intptr = value; | |
754 | break; | |
636f76ca | 755 | |
2717fa0f | 756 | case sGatewayPorts: |
757 | intptr = &options->gateway_ports; | |
3867aa0a | 758 | arg = strdelim(&cp); |
759 | if (!arg || *arg == '\0') | |
760 | fatal("%s line %d: missing yes/no/clientspecified " | |
761 | "argument.", filename, linenum); | |
762 | value = 0; /* silence compiler */ | |
763 | if (strcmp(arg, "clientspecified") == 0) | |
764 | value = 2; | |
765 | else if (strcmp(arg, "yes") == 0) | |
766 | value = 1; | |
767 | else if (strcmp(arg, "no") == 0) | |
768 | value = 0; | |
769 | else | |
770 | fatal("%s line %d: Bad yes/no/clientspecified " | |
771 | "argument: %s", filename, linenum, arg); | |
772 | if (*intptr == -1) | |
773 | *intptr = value; | |
774 | break; | |
5260325f | 775 | |
c5a7d788 | 776 | case sUseDNS: |
777 | intptr = &options->use_dns; | |
2717fa0f | 778 | goto parse_flag; |
5260325f | 779 | |
2717fa0f | 780 | case sLogFacility: |
781 | intptr = (int *) &options->log_facility; | |
782 | arg = strdelim(&cp); | |
783 | value = log_facility_number(arg); | |
5eaf8578 | 784 | if (value == SYSLOG_FACILITY_NOT_SET) |
2717fa0f | 785 | fatal("%.200s line %d: unsupported log facility '%s'", |
786 | filename, linenum, arg ? arg : "<NONE>"); | |
787 | if (*intptr == -1) | |
788 | *intptr = (SyslogFacility) value; | |
789 | break; | |
790 | ||
791 | case sLogLevel: | |
792 | intptr = (int *) &options->log_level; | |
793 | arg = strdelim(&cp); | |
794 | value = log_level_number(arg); | |
5eaf8578 | 795 | if (value == SYSLOG_LEVEL_NOT_SET) |
2717fa0f | 796 | fatal("%.200s line %d: unsupported log level '%s'", |
797 | filename, linenum, arg ? arg : "<NONE>"); | |
798 | if (*intptr == -1) | |
799 | *intptr = (LogLevel) value; | |
800 | break; | |
801 | ||
802 | case sAllowTcpForwarding: | |
803 | intptr = &options->allow_tcp_forwarding; | |
804 | goto parse_flag; | |
805 | ||
1853d1ef | 806 | case sUsePrivilegeSeparation: |
807 | intptr = &use_privsep; | |
808 | goto parse_flag; | |
809 | ||
2717fa0f | 810 | case sAllowUsers: |
811 | while ((arg = strdelim(&cp)) && *arg != '\0') { | |
812 | if (options->num_allow_users >= MAX_ALLOW_USERS) | |
813 | fatal("%s line %d: too many allow users.", | |
814 | filename, linenum); | |
7528d467 | 815 | options->allow_users[options->num_allow_users++] = |
816 | xstrdup(arg); | |
2717fa0f | 817 | } |
818 | break; | |
a8be9f80 | 819 | |
2717fa0f | 820 | case sDenyUsers: |
821 | while ((arg = strdelim(&cp)) && *arg != '\0') { | |
822 | if (options->num_deny_users >= MAX_DENY_USERS) | |
823 | fatal( "%s line %d: too many deny users.", | |
824 | filename, linenum); | |
7528d467 | 825 | options->deny_users[options->num_deny_users++] = |
826 | xstrdup(arg); | |
2717fa0f | 827 | } |
828 | break; | |
b2552997 | 829 | |
2717fa0f | 830 | case sAllowGroups: |
831 | while ((arg = strdelim(&cp)) && *arg != '\0') { | |
832 | if (options->num_allow_groups >= MAX_ALLOW_GROUPS) | |
833 | fatal("%s line %d: too many allow groups.", | |
834 | filename, linenum); | |
7528d467 | 835 | options->allow_groups[options->num_allow_groups++] = |
836 | xstrdup(arg); | |
2717fa0f | 837 | } |
838 | break; | |
a8be9f80 | 839 | |
2717fa0f | 840 | case sDenyGroups: |
841 | while ((arg = strdelim(&cp)) && *arg != '\0') { | |
842 | if (options->num_deny_groups >= MAX_DENY_GROUPS) | |
843 | fatal("%s line %d: too many deny groups.", | |
844 | filename, linenum); | |
845 | options->deny_groups[options->num_deny_groups++] = xstrdup(arg); | |
846 | } | |
847 | break; | |
38c295d6 | 848 | |
2717fa0f | 849 | case sCiphers: |
850 | arg = strdelim(&cp); | |
851 | if (!arg || *arg == '\0') | |
852 | fatal("%s line %d: Missing argument.", filename, linenum); | |
853 | if (!ciphers_valid(arg)) | |
854 | fatal("%s line %d: Bad SSH2 cipher spec '%s'.", | |
855 | filename, linenum, arg ? arg : "<NONE>"); | |
856 | if (options->ciphers == NULL) | |
857 | options->ciphers = xstrdup(arg); | |
858 | break; | |
859 | ||
860 | case sMacs: | |
861 | arg = strdelim(&cp); | |
862 | if (!arg || *arg == '\0') | |
863 | fatal("%s line %d: Missing argument.", filename, linenum); | |
864 | if (!mac_valid(arg)) | |
865 | fatal("%s line %d: Bad SSH2 mac spec '%s'.", | |
866 | filename, linenum, arg ? arg : "<NONE>"); | |
867 | if (options->macs == NULL) | |
868 | options->macs = xstrdup(arg); | |
869 | break; | |
870 | ||
871 | case sProtocol: | |
872 | intptr = &options->protocol; | |
873 | arg = strdelim(&cp); | |
874 | if (!arg || *arg == '\0') | |
875 | fatal("%s line %d: Missing argument.", filename, linenum); | |
876 | value = proto_spec(arg); | |
877 | if (value == SSH_PROTO_UNKNOWN) | |
878 | fatal("%s line %d: Bad protocol spec '%s'.", | |
184eed6a | 879 | filename, linenum, arg ? arg : "<NONE>"); |
2717fa0f | 880 | if (*intptr == SSH_PROTO_UNKNOWN) |
881 | *intptr = value; | |
882 | break; | |
883 | ||
884 | case sSubsystem: | |
885 | if (options->num_subsystems >= MAX_SUBSYSTEMS) { | |
886 | fatal("%s line %d: too many subsystems defined.", | |
184eed6a | 887 | filename, linenum); |
2717fa0f | 888 | } |
889 | arg = strdelim(&cp); | |
890 | if (!arg || *arg == '\0') | |
891 | fatal("%s line %d: Missing subsystem name.", | |
184eed6a | 892 | filename, linenum); |
2717fa0f | 893 | for (i = 0; i < options->num_subsystems; i++) |
894 | if (strcmp(arg, options->subsystem_name[i]) == 0) | |
895 | fatal("%s line %d: Subsystem '%s' already defined.", | |
184eed6a | 896 | filename, linenum, arg); |
2717fa0f | 897 | options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
898 | arg = strdelim(&cp); | |
899 | if (!arg || *arg == '\0') | |
900 | fatal("%s line %d: Missing subsystem command.", | |
184eed6a | 901 | filename, linenum); |
2717fa0f | 902 | options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
903 | options->num_subsystems++; | |
904 | break; | |
905 | ||
906 | case sMaxStartups: | |
907 | arg = strdelim(&cp); | |
908 | if (!arg || *arg == '\0') | |
909 | fatal("%s line %d: Missing MaxStartups spec.", | |
184eed6a | 910 | filename, linenum); |
2717fa0f | 911 | if ((n = sscanf(arg, "%d:%d:%d", |
912 | &options->max_startups_begin, | |
913 | &options->max_startups_rate, | |
914 | &options->max_startups)) == 3) { | |
915 | if (options->max_startups_begin > | |
916 | options->max_startups || | |
917 | options->max_startups_rate > 100 || | |
918 | options->max_startups_rate < 1) | |
c345cf9d | 919 | fatal("%s line %d: Illegal MaxStartups spec.", |
97de229c | 920 | filename, linenum); |
2717fa0f | 921 | } else if (n != 1) |
922 | fatal("%s line %d: Illegal MaxStartups spec.", | |
923 | filename, linenum); | |
924 | else | |
925 | options->max_startups = options->max_startups_begin; | |
926 | break; | |
927 | ||
af4bd935 | 928 | case sMaxAuthTries: |
929 | intptr = &options->max_authtries; | |
930 | goto parse_int; | |
931 | ||
2717fa0f | 932 | case sBanner: |
933 | charptr = &options->banner; | |
934 | goto parse_filename; | |
935 | /* | |
936 | * These options can contain %X options expanded at | |
937 | * connect time, so that you can specify paths like: | |
938 | * | |
939 | * AuthorizedKeysFile /etc/ssh_keys/%u | |
940 | */ | |
941 | case sAuthorizedKeysFile: | |
942 | case sAuthorizedKeysFile2: | |
943 | charptr = (opcode == sAuthorizedKeysFile ) ? | |
944 | &options->authorized_keys_file : | |
945 | &options->authorized_keys_file2; | |
946 | goto parse_filename; | |
947 | ||
948 | case sClientAliveInterval: | |
949 | intptr = &options->client_alive_interval; | |
950 | goto parse_time; | |
951 | ||
952 | case sClientAliveCountMax: | |
953 | intptr = &options->client_alive_count_max; | |
954 | goto parse_int; | |
955 | ||
61a2c1da | 956 | case sAcceptEnv: |
957 | while ((arg = strdelim(&cp)) && *arg != '\0') { | |
958 | if (strchr(arg, '=') != NULL) | |
959 | fatal("%s line %d: Invalid environment name.", | |
960 | filename, linenum); | |
961 | if (options->num_accept_env >= MAX_ACCEPT_ENV) | |
962 | fatal("%s line %d: too many allow env.", | |
963 | filename, linenum); | |
964 | options->accept_env[options->num_accept_env++] = | |
965 | xstrdup(arg); | |
966 | } | |
967 | break; | |
968 | ||
d20f3c9e | 969 | case sPermitTunnel: |
970 | intptr = &options->permit_tun; | |
a4f24bf8 | 971 | arg = strdelim(&cp); |
972 | if (!arg || *arg == '\0') | |
973 | fatal("%s line %d: Missing yes/point-to-point/" | |
974 | "ethernet/no argument.", filename, linenum); | |
975 | value = 0; /* silence compiler */ | |
976 | if (strcasecmp(arg, "ethernet") == 0) | |
977 | value = SSH_TUNMODE_ETHERNET; | |
978 | else if (strcasecmp(arg, "point-to-point") == 0) | |
979 | value = SSH_TUNMODE_POINTOPOINT; | |
980 | else if (strcasecmp(arg, "yes") == 0) | |
981 | value = SSH_TUNMODE_YES; | |
982 | else if (strcasecmp(arg, "no") == 0) | |
983 | value = SSH_TUNMODE_NO; | |
984 | else | |
985 | fatal("%s line %d: Bad yes/point-to-point/ethernet/" | |
986 | "no argument: %s", filename, linenum, arg); | |
987 | if (*intptr == -1) | |
988 | *intptr = value; | |
989 | break; | |
d20f3c9e | 990 | |
2717fa0f | 991 | case sDeprecated: |
bbe88b6d | 992 | logit("%s line %d: Deprecated option %s", |
2717fa0f | 993 | filename, linenum, arg); |
994 | while (arg) | |
995 | arg = strdelim(&cp); | |
996 | break; | |
997 | ||
a2144546 | 998 | case sUnsupported: |
999 | logit("%s line %d: Unsupported option %s", | |
1000 | filename, linenum, arg); | |
1001 | while (arg) | |
1002 | arg = strdelim(&cp); | |
1003 | break; | |
1004 | ||
2717fa0f | 1005 | default: |
1006 | fatal("%s line %d: Missing handler for opcode %s (%d)", | |
1007 | filename, linenum, arg, opcode); | |
1008 | } | |
1009 | if ((arg = strdelim(&cp)) != NULL && *arg != '\0') | |
1010 | fatal("%s line %d: garbage at end of line; \"%.200s\".", | |
1011 | filename, linenum, arg); | |
1012 | return 0; | |
1013 | } | |
089fbbd2 | 1014 | |
2717fa0f | 1015 | /* Reads the server configuration file. */ |
5c53a31e | 1016 | |
2717fa0f | 1017 | void |
b9a549d7 | 1018 | load_server_config(const char *filename, Buffer *conf) |
2717fa0f | 1019 | { |
b9a549d7 | 1020 | char line[1024], *cp; |
7528d467 | 1021 | FILE *f; |
2717fa0f | 1022 | |
b9a549d7 | 1023 | debug2("%s: filename %s", __func__, filename); |
1024 | if ((f = fopen(filename, "r")) == NULL) { | |
2717fa0f | 1025 | perror(filename); |
1026 | exit(1); | |
1027 | } | |
b9a549d7 | 1028 | buffer_clear(conf); |
2717fa0f | 1029 | while (fgets(line, sizeof(line), f)) { |
b9a549d7 | 1030 | /* |
1031 | * Trim out comments and strip whitespace | |
f2107e97 | 1032 | * NB - preserve newlines, they are needed to reproduce |
b9a549d7 | 1033 | * line numbers later for error messages |
1034 | */ | |
1035 | if ((cp = strchr(line, '#')) != NULL) | |
1036 | memcpy(cp, "\n", 2); | |
1037 | cp = line + strspn(line, " \t\r"); | |
1038 | ||
1039 | buffer_append(conf, cp, strlen(cp)); | |
8efc0c15 | 1040 | } |
b9a549d7 | 1041 | buffer_append(conf, "\0", 1); |
5260325f | 1042 | fclose(f); |
b9a549d7 | 1043 | debug2("%s: done config len = %d", __func__, buffer_len(conf)); |
1044 | } | |
1045 | ||
1046 | void | |
1047 | parse_server_config(ServerOptions *options, const char *filename, Buffer *conf) | |
1048 | { | |
1049 | int linenum, bad_options = 0; | |
16acb158 | 1050 | char *cp, *obuf, *cbuf; |
b9a549d7 | 1051 | |
1052 | debug2("%s: config %s len %d", __func__, filename, buffer_len(conf)); | |
1053 | ||
16acb158 | 1054 | obuf = cbuf = xstrdup(buffer_ptr(conf)); |
861cc543 | 1055 | linenum = 1; |
f8cc7664 | 1056 | while ((cp = strsep(&cbuf, "\n")) != NULL) { |
b9a549d7 | 1057 | if (process_server_config_line(options, cp, filename, |
1058 | linenum++) != 0) | |
1059 | bad_options++; | |
1060 | } | |
16acb158 | 1061 | xfree(obuf); |
b7c70970 | 1062 | if (bad_options > 0) |
1063 | fatal("%s: terminating, %d bad configuration options", | |
1064 | filename, bad_options); | |
8efc0c15 | 1065 | } |