*/
#include "includes.h"
-RCSID("$OpenBSD: servconf.c,v 1.67 2001/02/12 16:16:23 markus Exp $");
+RCSID("$OpenBSD: servconf.c,v 1.121 2003/05/15 14:02:47 jakob Exp $");
-#ifdef KRB4
+#if defined(KRB4)
#include <krb.h>
#endif
+
+#if defined(KRB5)
+# ifdef HEIMDAL
+# include <krb.h>
+# else
+/*
+ * XXX: Bodge - but then, so is using the kerberos IV KEYFILE to get a
+ * Kerberos V keytab
+ */
+# define KEYFILE "/etc/krb5.keytab"
+# endif
+#endif
+
#ifdef AFS
#include <kafs.h>
#endif
#include "kex.h"
#include "mac.h"
-/* add listen address */
-void add_listen_addr(ServerOptions *options, char *addr);
+static void add_listen_addr(ServerOptions *, char *, u_short);
+static void add_one_listen_addr(ServerOptions *, char *, u_short);
/* AF_UNSPEC or AF_INET or AF_INET6 */
extern int IPv4or6;
+/* Use of privilege separation or not */
+extern int use_privsep;
/* Initializes the server options to their default values. */
initialize_server_options(ServerOptions *options)
{
memset(options, 0, sizeof(*options));
+
+ /* Portable-specific options */
+ options->use_pam = -1;
+
+ /* Standard Options */
options->num_ports = 0;
options->ports_from_cmdline = 0;
options->listen_addrs = NULL;
options->ignore_rhosts = -1;
options->ignore_user_known_hosts = -1;
options->print_motd = -1;
- options->check_mail = -1;
+ options->print_lastlog = -1;
options->x11_forwarding = -1;
options->x11_display_offset = -1;
+ options->x11_use_localhost = -1;
options->xauth_location = NULL;
options->strict_modes = -1;
options->keepalives = -1;
- options->log_facility = (SyslogFacility) - 1;
- options->log_level = (LogLevel) - 1;
+ options->log_facility = SYSLOG_FACILITY_NOT_SET;
+ options->log_level = SYSLOG_LEVEL_NOT_SET;
options->rhosts_authentication = -1;
options->rhosts_rsa_authentication = -1;
+ options->hostbased_authentication = -1;
+ options->hostbased_uses_name_from_packet_only = -1;
options->rsa_authentication = -1;
options->pubkey_authentication = -1;
-#ifdef KRB4
options->kerberos_authentication = -1;
options->kerberos_or_local_passwd = -1;
options->kerberos_ticket_cleanup = -1;
-#endif
-#ifdef AFS
options->kerberos_tgt_passing = -1;
options->afs_token_passing = -1;
-#endif
options->password_authentication = -1;
options->kbd_interactive_authentication = -1;
- options->challenge_reponse_authentication = -1;
+ options->challenge_response_authentication = -1;
options->permit_empty_passwd = -1;
+ options->permit_user_env = -1;
options->use_login = -1;
+ options->compression = -1;
options->allow_tcp_forwarding = -1;
options->num_allow_users = 0;
options->num_deny_users = 0;
options->max_startups_rate = -1;
options->max_startups = -1;
options->banner = NULL;
- options->reverse_mapping_check = -1;
+ options->verify_reverse_mapping = -1;
+ options->client_alive_interval = -1;
+ options->client_alive_count_max = -1;
+ options->authorized_keys_file = NULL;
+ options->authorized_keys_file2 = NULL;
+
+ /* Needs to be accessable in many places */
+ use_privsep = -1;
}
void
fill_default_server_options(ServerOptions *options)
{
+ /* Portable-specific options */
+ if (options->use_pam == -1)
+#ifdef USE_PAM
+ options->use_pam = 1;
+#else
+ options->use_pam = 0;
+#endif
+
+ /* Standard Options */
if (options->protocol == SSH_PROTO_UNKNOWN)
options->protocol = SSH_PROTO_1|SSH_PROTO_2;
if (options->num_host_key_files == 0) {
/* fill default hostkeys for protocols */
if (options->protocol & SSH_PROTO_1)
- options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE;
- if (options->protocol & SSH_PROTO_2)
- options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE;
+ options->host_key_files[options->num_host_key_files++] =
+ _PATH_HOST_KEY_FILE;
+ if (options->protocol & SSH_PROTO_2) {
+ options->host_key_files[options->num_host_key_files++] =
+ _PATH_HOST_RSA_KEY_FILE;
+ options->host_key_files[options->num_host_key_files++] =
+ _PATH_HOST_DSA_KEY_FILE;
+ }
}
if (options->num_ports == 0)
options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
if (options->listen_addrs == NULL)
- add_listen_addr(options, NULL);
+ add_listen_addr(options, NULL, 0);
if (options->pid_file == NULL)
options->pid_file = _PATH_SSH_DAEMON_PID_FILE;
if (options->server_key_bits == -1)
options->server_key_bits = 768;
if (options->login_grace_time == -1)
- options->login_grace_time = 600;
+ options->login_grace_time = 120;
if (options->key_regeneration_time == -1)
options->key_regeneration_time = 3600;
if (options->permit_root_login == PERMIT_NOT_SET)
options->ignore_rhosts = 1;
if (options->ignore_user_known_hosts == -1)
options->ignore_user_known_hosts = 0;
- if (options->check_mail == -1)
- options->check_mail = 0;
if (options->print_motd == -1)
options->print_motd = 1;
+ if (options->print_lastlog == -1)
+ options->print_lastlog = 1;
if (options->x11_forwarding == -1)
options->x11_forwarding = 0;
if (options->x11_display_offset == -1)
options->x11_display_offset = 10;
-#ifdef XAUTH_PATH
+ if (options->x11_use_localhost == -1)
+ options->x11_use_localhost = 1;
if (options->xauth_location == NULL)
- options->xauth_location = XAUTH_PATH;
-#endif /* XAUTH_PATH */
+ options->xauth_location = _PATH_XAUTH;
if (options->strict_modes == -1)
options->strict_modes = 1;
if (options->keepalives == -1)
options->keepalives = 1;
- if (options->log_facility == (SyslogFacility) (-1))
+ if (options->log_facility == SYSLOG_FACILITY_NOT_SET)
options->log_facility = SYSLOG_FACILITY_AUTH;
- if (options->log_level == (LogLevel) (-1))
+ if (options->log_level == SYSLOG_LEVEL_NOT_SET)
options->log_level = SYSLOG_LEVEL_INFO;
if (options->rhosts_authentication == -1)
options->rhosts_authentication = 0;
if (options->rhosts_rsa_authentication == -1)
options->rhosts_rsa_authentication = 0;
+ if (options->hostbased_authentication == -1)
+ options->hostbased_authentication = 0;
+ if (options->hostbased_uses_name_from_packet_only == -1)
+ options->hostbased_uses_name_from_packet_only = 0;
if (options->rsa_authentication == -1)
options->rsa_authentication = 1;
if (options->pubkey_authentication == -1)
options->pubkey_authentication = 1;
-#ifdef KRB4
if (options->kerberos_authentication == -1)
- options->kerberos_authentication = (access(KEYFILE, R_OK) == 0);
+ options->kerberos_authentication = 0;
if (options->kerberos_or_local_passwd == -1)
options->kerberos_or_local_passwd = 1;
if (options->kerberos_ticket_cleanup == -1)
options->kerberos_ticket_cleanup = 1;
-#endif /* KRB4 */
-#ifdef AFS
if (options->kerberos_tgt_passing == -1)
options->kerberos_tgt_passing = 0;
if (options->afs_token_passing == -1)
- options->afs_token_passing = k_hasafs();
-#endif /* AFS */
+ options->afs_token_passing = 0;
if (options->password_authentication == -1)
options->password_authentication = 1;
if (options->kbd_interactive_authentication == -1)
options->kbd_interactive_authentication = 0;
- if (options->challenge_reponse_authentication == -1)
- options->challenge_reponse_authentication = 1;
+ if (options->challenge_response_authentication == -1)
+ options->challenge_response_authentication = 1;
if (options->permit_empty_passwd == -1)
options->permit_empty_passwd = 0;
+ if (options->permit_user_env == -1)
+ options->permit_user_env = 0;
if (options->use_login == -1)
options->use_login = 0;
+ if (options->compression == -1)
+ options->compression = 1;
if (options->allow_tcp_forwarding == -1)
options->allow_tcp_forwarding = 1;
if (options->gateway_ports == -1)
options->max_startups_rate = 100; /* 100% */
if (options->max_startups_begin == -1)
options->max_startups_begin = options->max_startups;
- if (options->reverse_mapping_check == -1)
- options->reverse_mapping_check = 0;
+ if (options->verify_reverse_mapping == -1)
+ options->verify_reverse_mapping = 0;
+ if (options->client_alive_interval == -1)
+ options->client_alive_interval = 0;
+ if (options->client_alive_count_max == -1)
+ options->client_alive_count_max = 3;
+ if (options->authorized_keys_file2 == NULL) {
+ /* authorized_keys_file2 falls back to authorized_keys_file */
+ if (options->authorized_keys_file != NULL)
+ options->authorized_keys_file2 = options->authorized_keys_file;
+ else
+ options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2;
+ }
+ if (options->authorized_keys_file == NULL)
+ options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS;
+
+ /* Turn privilege separation on by default */
+ if (use_privsep == -1)
+ use_privsep = 1;
+
+#ifndef HAVE_MMAP
+ if (use_privsep && options->compression == 1) {
+ error("This platform does not support both privilege "
+ "separation and compression");
+ error("Compression disabled");
+ options->compression = 0;
+ }
+#endif
+
}
/* Keyword tokens. */
typedef enum {
sBadOption, /* == unknown option */
+ /* Portable-specific options */
+ sUsePAM,
+ /* Standard Options */
sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
sPermitRootLogin, sLogFacility, sLogLevel,
sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication,
-#ifdef KRB4
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
-#endif
-#ifdef AFS
- sKerberosTgtPassing, sAFSTokenPassing,
-#endif
- sChallengeResponseAuthentication,
+ sKerberosTgtPassing, sAFSTokenPassing, sChallengeResponseAuthentication,
sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress,
- sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset,
- sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail,
- sUseLogin, sAllowTcpForwarding,
+ sPrintMotd, sPrintLastLog, sIgnoreRhosts,
+ sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
+ sStrictModes, sEmptyPasswd, sKeepAlives,
+ sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression,
sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups,
- sBanner, sReverseMappingCheck
+ sBanner, sVerifyReverseMapping, sHostbasedAuthentication,
+ sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
+ sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2,
+ sUsePrivilegeSeparation,
+ sDeprecated, sUnsupported
} ServerOpCodes;
/* Textual representation of the tokens. */
const char *name;
ServerOpCodes opcode;
} keywords[] = {
+ /* Portable-specific options */
+ { "UsePAM", sUsePAM },
+ /* Standard Options */
{ "port", sPort },
{ "hostkey", sHostKeyFile },
{ "hostdsakey", sHostKeyFile }, /* alias */
{ "loglevel", sLogLevel },
{ "rhostsauthentication", sRhostsAuthentication },
{ "rhostsrsaauthentication", sRhostsRSAAuthentication },
+ { "hostbasedauthentication", sHostbasedAuthentication },
+ { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly },
{ "rsaauthentication", sRSAAuthentication },
{ "pubkeyauthentication", sPubkeyAuthentication },
{ "dsaauthentication", sPubkeyAuthentication }, /* alias */
-#ifdef KRB4
+#if defined(KRB4) || defined(KRB5)
{ "kerberosauthentication", sKerberosAuthentication },
{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd },
{ "kerberosticketcleanup", sKerberosTicketCleanup },
-#endif
-#ifdef AFS
{ "kerberostgtpassing", sKerberosTgtPassing },
+#else
+ { "kerberosauthentication", sUnsupported },
+ { "kerberosorlocalpasswd", sUnsupported },
+ { "kerberosticketcleanup", sUnsupported },
+ { "kerberostgtpassing", sUnsupported },
+#endif
+#if defined(AFS)
{ "afstokenpassing", sAFSTokenPassing },
+#else
+ { "afstokenpassing", sUnsupported },
#endif
{ "passwordauthentication", sPasswordAuthentication },
{ "kbdinteractiveauthentication", sKbdInteractiveAuthentication },
{ "challengeresponseauthentication", sChallengeResponseAuthentication },
{ "skeyauthentication", sChallengeResponseAuthentication }, /* alias */
- { "checkmail", sCheckMail },
+ { "checkmail", sDeprecated },
{ "listenaddress", sListenAddress },
{ "printmotd", sPrintMotd },
+ { "printlastlog", sPrintLastLog },
{ "ignorerhosts", sIgnoreRhosts },
{ "ignoreuserknownhosts", sIgnoreUserKnownHosts },
{ "x11forwarding", sX11Forwarding },
{ "x11displayoffset", sX11DisplayOffset },
+ { "x11uselocalhost", sX11UseLocalhost },
{ "xauthlocation", sXAuthLocation },
{ "strictmodes", sStrictModes },
{ "permitemptypasswords", sEmptyPasswd },
+ { "permituserenvironment", sPermitUserEnvironment },
{ "uselogin", sUseLogin },
- { "randomseed", sRandomSeedFile },
+ { "compression", sCompression },
{ "keepalive", sKeepAlives },
{ "allowtcpforwarding", sAllowTcpForwarding },
{ "allowusers", sAllowUsers },
{ "subsystem", sSubsystem },
{ "maxstartups", sMaxStartups },
{ "banner", sBanner },
- { "reversemappingcheck", sReverseMappingCheck },
- { NULL, 0 }
+ { "verifyreversemapping", sVerifyReverseMapping },
+ { "reversemappingcheck", sVerifyReverseMapping },
+ { "clientaliveinterval", sClientAliveInterval },
+ { "clientalivecountmax", sClientAliveCountMax },
+ { "authorizedkeysfile", sAuthorizedKeysFile },
+ { "authorizedkeysfile2", sAuthorizedKeysFile2 },
+ { "useprivilegeseparation", sUsePrivilegeSeparation},
+ { NULL, sBadOption }
};
/*
- * Returns the number of the token pointed to by cp of length len. Never
- * returns if the token is not known.
+ * Returns the number of the token pointed to by cp or sBadOption.
*/
static ServerOpCodes
if (strcasecmp(cp, keywords[i].name) == 0)
return keywords[i].opcode;
- fprintf(stderr, "%s: line %d: Bad configuration option: %s\n",
- filename, linenum, cp);
+ error("%s: line %d: Bad configuration option: %s",
+ filename, linenum, cp);
return sBadOption;
}
-/*
- * add listen address
- */
-void
-add_listen_addr(ServerOptions *options, char *addr)
+static void
+add_listen_addr(ServerOptions *options, char *addr, u_short port)
{
- struct addrinfo hints, *ai, *aitop;
- char strport[NI_MAXSERV];
- int gaierr;
int i;
if (options->num_ports == 0)
options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
- for (i = 0; i < options->num_ports; i++) {
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = IPv4or6;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
- snprintf(strport, sizeof strport, "%d", options->ports[i]);
- if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
- fatal("bad addr or host: %s (%s)\n",
- addr ? addr : "<NULL>",
- gai_strerror(gaierr));
- for (ai = aitop; ai->ai_next; ai = ai->ai_next)
- ;
- ai->ai_next = options->listen_addrs;
- options->listen_addrs = aitop;
- }
+ if (port == 0)
+ for (i = 0; i < options->num_ports; i++)
+ add_one_listen_addr(options, addr, options->ports[i]);
+ else
+ add_one_listen_addr(options, addr, port);
}
-/* Reads the server configuration file. */
+static void
+add_one_listen_addr(ServerOptions *options, char *addr, u_short port)
+{
+ struct addrinfo hints, *ai, *aitop;
+ char strport[NI_MAXSERV];
+ int gaierr;
-void
-read_server_config(ServerOptions *options, const char *filename)
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = IPv4or6;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
+ snprintf(strport, sizeof strport, "%u", port);
+ if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
+ fatal("bad addr or host: %s (%s)",
+ addr ? addr : "<NULL>",
+ gai_strerror(gaierr));
+ for (ai = aitop; ai->ai_next; ai = ai->ai_next)
+ ;
+ ai->ai_next = options->listen_addrs;
+ options->listen_addrs = aitop;
+}
+
+int
+process_server_config_line(ServerOptions *options, char *line,
+ const char *filename, int linenum)
{
- FILE *f;
- char line[1024];
- char *cp, **charptr, *arg;
- int linenum, *intptr, value;
- int bad_options = 0;
+ char *cp, **charptr, *arg, *p;
+ int *intptr, value, i, n;
ServerOpCodes opcode;
- int i;
- f = fopen(filename, "r");
- if (!f) {
- perror(filename);
- exit(1);
- }
- linenum = 0;
- while (fgets(line, sizeof(line), f)) {
- linenum++;
- cp = line;
+ cp = line;
+ arg = strdelim(&cp);
+ /* Ignore leading whitespace */
+ if (*arg == '\0')
arg = strdelim(&cp);
- /* Ignore leading whitespace */
- if (*arg == '\0')
- arg = strdelim(&cp);
- if (!arg || !*arg || *arg == '#')
- continue;
- intptr = NULL;
- charptr = NULL;
- opcode = parse_token(arg, filename, linenum);
- switch (opcode) {
- case sBadOption:
- bad_options++;
- continue;
- case sPort:
- /* ignore ports from configfile if cmdline specifies ports */
- if (options->ports_from_cmdline)
- continue;
- if (options->listen_addrs != NULL)
- fatal("%s line %d: ports must be specified before "
- "ListenAdress.\n", filename, linenum);
- if (options->num_ports >= MAX_PORTS)
- fatal("%s line %d: too many ports.\n",
- filename, linenum);
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: missing port number.\n",
+ if (!arg || !*arg || *arg == '#')
+ return 0;
+ intptr = NULL;
+ charptr = NULL;
+ opcode = parse_token(arg, filename, linenum);
+ switch (opcode) {
+ /* Portable-specific options */
+ case sUsePAM:
+ intptr = &options->use_pam;
+ goto parse_flag;
+
+ /* Standard Options */
+ case sBadOption:
+ return -1;
+ case sPort:
+ /* ignore ports from configfile if cmdline specifies ports */
+ if (options->ports_from_cmdline)
+ return 0;
+ if (options->listen_addrs != NULL)
+ fatal("%s line %d: ports must be specified before "
+ "ListenAddress.", filename, linenum);
+ if (options->num_ports >= MAX_PORTS)
+ fatal("%s line %d: too many ports.",
+ filename, linenum);
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: missing port number.",
+ filename, linenum);
+ options->ports[options->num_ports++] = a2port(arg);
+ if (options->ports[options->num_ports-1] == 0)
+ fatal("%s line %d: Badly formatted port number.",
+ filename, linenum);
+ break;
+
+ case sServerKeyBits:
+ intptr = &options->server_key_bits;
+parse_int:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: missing integer value.",
+ filename, linenum);
+ value = atoi(arg);
+ if (*intptr == -1)
+ *intptr = value;
+ break;
+
+ case sLoginGraceTime:
+ intptr = &options->login_grace_time;
+parse_time:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: missing time value.",
+ filename, linenum);
+ if ((value = convtime(arg)) == -1)
+ fatal("%s line %d: invalid time value.",
+ filename, linenum);
+ if (*intptr == -1)
+ *intptr = value;
+ break;
+
+ case sKeyRegenerationTime:
+ intptr = &options->key_regeneration_time;
+ goto parse_time;
+
+ case sListenAddress:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0)
+ fatal("%s line %d: missing inet addr.",
+ filename, linenum);
+ if (*arg == '[') {
+ if ((p = strchr(arg, ']')) == NULL)
+ fatal("%s line %d: bad ipv6 inet addr usage.",
filename, linenum);
- options->ports[options->num_ports++] = atoi(arg);
+ arg++;
+ memmove(p, p+1, strlen(p+1)+1);
+ } else if (((p = strchr(arg, ':')) == NULL) ||
+ (strchr(p+1, ':') != NULL)) {
+ add_listen_addr(options, arg, 0);
break;
+ }
+ if (*p == ':') {
+ u_short port;
- case sServerKeyBits:
- intptr = &options->server_key_bits;
-parse_int:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0') {
- fprintf(stderr, "%s line %d: missing integer value.\n",
- filename, linenum);
- exit(1);
+ p++;
+ if (*p == '\0')
+ fatal("%s line %d: bad inet addr:port usage.",
+ filename, linenum);
+ else {
+ *(p-1) = '\0';
+ if ((port = a2port(p)) == 0)
+ fatal("%s line %d: bad port number.",
+ filename, linenum);
+ add_listen_addr(options, arg, port);
}
- value = atoi(arg);
- if (*intptr == -1)
- *intptr = value;
- break;
+ } else if (*p == '\0')
+ add_listen_addr(options, arg, 0);
+ else
+ fatal("%s line %d: bad inet addr usage.",
+ filename, linenum);
+ break;
+
+ case sHostKeyFile:
+ intptr = &options->num_host_key_files;
+ if (*intptr >= MAX_HOSTKEYS)
+ fatal("%s line %d: too many host keys specified (max %d).",
+ filename, linenum, MAX_HOSTKEYS);
+ charptr = &options->host_key_files[*intptr];
+parse_filename:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: missing file name.",
+ filename, linenum);
+ if (*charptr == NULL) {
+ *charptr = tilde_expand_filename(arg, getuid());
+ /* increase optional counter */
+ if (intptr != NULL)
+ *intptr = *intptr + 1;
+ }
+ break;
- case sLoginGraceTime:
- intptr = &options->login_grace_time;
- goto parse_int;
+ case sPidFile:
+ charptr = &options->pid_file;
+ goto parse_filename;
- case sKeyRegenerationTime:
- intptr = &options->key_regeneration_time;
- goto parse_int;
+ case sPermitRootLogin:
+ intptr = &options->permit_root_login;
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: missing yes/"
+ "without-password/forced-commands-only/no "
+ "argument.", filename, linenum);
+ value = 0; /* silence compiler */
+ if (strcmp(arg, "without-password") == 0)
+ value = PERMIT_NO_PASSWD;
+ else if (strcmp(arg, "forced-commands-only") == 0)
+ value = PERMIT_FORCED_ONLY;
+ else if (strcmp(arg, "yes") == 0)
+ value = PERMIT_YES;
+ else if (strcmp(arg, "no") == 0)
+ value = PERMIT_NO;
+ else
+ fatal("%s line %d: Bad yes/"
+ "without-password/forced-commands-only/no "
+ "argument: %s", filename, linenum, arg);
+ if (*intptr == -1)
+ *intptr = value;
+ break;
+
+ case sIgnoreRhosts:
+ intptr = &options->ignore_rhosts;
+parse_flag:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: missing yes/no argument.",
+ filename, linenum);
+ value = 0; /* silence compiler */
+ if (strcmp(arg, "yes") == 0)
+ value = 1;
+ else if (strcmp(arg, "no") == 0)
+ value = 0;
+ else
+ fatal("%s line %d: Bad yes/no argument: %s",
+ filename, linenum, arg);
+ if (*intptr == -1)
+ *intptr = value;
+ break;
- case sListenAddress:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: missing inet addr.\n",
- filename, linenum);
- add_listen_addr(options, arg);
- break;
+ case sIgnoreUserKnownHosts:
+ intptr = &options->ignore_user_known_hosts;
+ goto parse_flag;
- case sHostKeyFile:
- intptr = &options->num_host_key_files;
- if (*intptr >= MAX_HOSTKEYS) {
- fprintf(stderr, "%s line %d: to many host keys specified (max %d).\n",
- filename, linenum, MAX_HOSTKEYS);
- exit(1);
- }
- charptr = &options->host_key_files[*intptr];
-parse_filename:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0') {
- fprintf(stderr, "%s line %d: missing file name.\n",
- filename, linenum);
- exit(1);
- }
- if (*charptr == NULL) {
- *charptr = tilde_expand_filename(arg, getuid());
- /* increase optional counter */
- if (intptr != NULL)
- *intptr = *intptr + 1;
- }
- break;
+ case sRhostsAuthentication:
+ intptr = &options->rhosts_authentication;
+ goto parse_flag;
- case sPidFile:
- charptr = &options->pid_file;
- goto parse_filename;
+ case sRhostsRSAAuthentication:
+ intptr = &options->rhosts_rsa_authentication;
+ goto parse_flag;
- case sRandomSeedFile:
- fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n",
- filename, linenum);
- arg = strdelim(&cp);
- break;
+ case sHostbasedAuthentication:
+ intptr = &options->hostbased_authentication;
+ goto parse_flag;
- case sPermitRootLogin:
- intptr = &options->permit_root_login;
- arg = strdelim(&cp);
- if (!arg || *arg == '\0') {
- fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n",
- filename, linenum);
- exit(1);
- }
- if (strcmp(arg, "without-password") == 0)
- value = PERMIT_NO_PASSWD;
- else if (strcmp(arg, "forced-commands-only") == 0)
- value = PERMIT_FORCED_ONLY;
- else if (strcmp(arg, "yes") == 0)
- value = PERMIT_YES;
- else if (strcmp(arg, "no") == 0)
- value = PERMIT_NO;
- else {
- fprintf(stderr, "%s line %d: Bad yes/"
- "without-password/forced-commands-only/no "
- "argument: %s\n", filename, linenum, arg);
- exit(1);
- }
- if (*intptr == -1)
- *intptr = value;
- break;
+ case sHostbasedUsesNameFromPacketOnly:
+ intptr = &options->hostbased_uses_name_from_packet_only;
+ goto parse_flag;
- case sIgnoreRhosts:
- intptr = &options->ignore_rhosts;
-parse_flag:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0') {
- fprintf(stderr, "%s line %d: missing yes/no argument.\n",
- filename, linenum);
- exit(1);
- }
- if (strcmp(arg, "yes") == 0)
- value = 1;
- else if (strcmp(arg, "no") == 0)
- value = 0;
- else {
- fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n",
- filename, linenum, arg);
- exit(1);
- }
- if (*intptr == -1)
- *intptr = value;
- break;
+ case sRSAAuthentication:
+ intptr = &options->rsa_authentication;
+ goto parse_flag;
- case sIgnoreUserKnownHosts:
- intptr = &options->ignore_user_known_hosts;
- goto parse_flag;
+ case sPubkeyAuthentication:
+ intptr = &options->pubkey_authentication;
+ goto parse_flag;
- case sRhostsAuthentication:
- intptr = &options->rhosts_authentication;
- goto parse_flag;
+ case sKerberosAuthentication:
+ intptr = &options->kerberos_authentication;
+ goto parse_flag;
- case sRhostsRSAAuthentication:
- intptr = &options->rhosts_rsa_authentication;
- goto parse_flag;
+ case sKerberosOrLocalPasswd:
+ intptr = &options->kerberos_or_local_passwd;
+ goto parse_flag;
- case sRSAAuthentication:
- intptr = &options->rsa_authentication;
- goto parse_flag;
+ case sKerberosTicketCleanup:
+ intptr = &options->kerberos_ticket_cleanup;
+ goto parse_flag;
- case sPubkeyAuthentication:
- intptr = &options->pubkey_authentication;
- goto parse_flag;
+ case sKerberosTgtPassing:
+ intptr = &options->kerberos_tgt_passing;
+ goto parse_flag;
-#ifdef KRB4
- case sKerberosAuthentication:
- intptr = &options->kerberos_authentication;
- goto parse_flag;
+ case sAFSTokenPassing:
+ intptr = &options->afs_token_passing;
+ goto parse_flag;
- case sKerberosOrLocalPasswd:
- intptr = &options->kerberos_or_local_passwd;
- goto parse_flag;
+ case sPasswordAuthentication:
+ intptr = &options->password_authentication;
+ goto parse_flag;
- case sKerberosTicketCleanup:
- intptr = &options->kerberos_ticket_cleanup;
- goto parse_flag;
-#endif
+ case sKbdInteractiveAuthentication:
+ intptr = &options->kbd_interactive_authentication;
+ goto parse_flag;
-#ifdef AFS
- case sKerberosTgtPassing:
- intptr = &options->kerberos_tgt_passing;
- goto parse_flag;
+ case sChallengeResponseAuthentication:
+ intptr = &options->challenge_response_authentication;
+ goto parse_flag;
- case sAFSTokenPassing:
- intptr = &options->afs_token_passing;
- goto parse_flag;
-#endif
+ case sPrintMotd:
+ intptr = &options->print_motd;
+ goto parse_flag;
- case sPasswordAuthentication:
- intptr = &options->password_authentication;
- goto parse_flag;
-
- case sKbdInteractiveAuthentication:
- intptr = &options->kbd_interactive_authentication;
- goto parse_flag;
-
- case sCheckMail:
- intptr = &options->check_mail;
- goto parse_flag;
-
- case sChallengeResponseAuthentication:
- intptr = &options->challenge_reponse_authentication;
- goto parse_flag;
-
- case sPrintMotd:
- intptr = &options->print_motd;
- goto parse_flag;
-
- case sX11Forwarding:
- intptr = &options->x11_forwarding;
- goto parse_flag;
-
- case sX11DisplayOffset:
- intptr = &options->x11_display_offset;
- goto parse_int;
-
- case sXAuthLocation:
- charptr = &options->xauth_location;
- goto parse_filename;
-
- case sStrictModes:
- intptr = &options->strict_modes;
- goto parse_flag;
-
- case sKeepAlives:
- intptr = &options->keepalives;
- goto parse_flag;
-
- case sEmptyPasswd:
- intptr = &options->permit_empty_passwd;
- goto parse_flag;
-
- case sUseLogin:
- intptr = &options->use_login;
- goto parse_flag;
-
- case sGatewayPorts:
- intptr = &options->gateway_ports;
- goto parse_flag;
-
- case sReverseMappingCheck:
- intptr = &options->reverse_mapping_check;
- goto parse_flag;
-
- case sLogFacility:
- intptr = (int *) &options->log_facility;
- arg = strdelim(&cp);
- value = log_facility_number(arg);
- if (value == (SyslogFacility) - 1)
- fatal("%.200s line %d: unsupported log facility '%s'\n",
- filename, linenum, arg ? arg : "<NONE>");
- if (*intptr == -1)
- *intptr = (SyslogFacility) value;
- break;
+ case sPrintLastLog:
+ intptr = &options->print_lastlog;
+ goto parse_flag;
- case sLogLevel:
- intptr = (int *) &options->log_level;
- arg = strdelim(&cp);
- value = log_level_number(arg);
- if (value == (LogLevel) - 1)
- fatal("%.200s line %d: unsupported log level '%s'\n",
- filename, linenum, arg ? arg : "<NONE>");
- if (*intptr == -1)
- *intptr = (LogLevel) value;
- break;
+ case sX11Forwarding:
+ intptr = &options->x11_forwarding;
+ goto parse_flag;
- case sAllowTcpForwarding:
- intptr = &options->allow_tcp_forwarding;
- goto parse_flag;
+ case sX11DisplayOffset:
+ intptr = &options->x11_display_offset;
+ goto parse_int;
- case sAllowUsers:
- while ((arg = strdelim(&cp)) && *arg != '\0') {
- if (options->num_allow_users >= MAX_ALLOW_USERS)
- fatal("%s line %d: too many allow users.\n",
- filename, linenum);
- options->allow_users[options->num_allow_users++] = xstrdup(arg);
- }
- break;
+ case sX11UseLocalhost:
+ intptr = &options->x11_use_localhost;
+ goto parse_flag;
- case sDenyUsers:
- while ((arg = strdelim(&cp)) && *arg != '\0') {
- if (options->num_deny_users >= MAX_DENY_USERS)
- fatal( "%s line %d: too many deny users.\n",
- filename, linenum);
- options->deny_users[options->num_deny_users++] = xstrdup(arg);
- }
- break;
+ case sXAuthLocation:
+ charptr = &options->xauth_location;
+ goto parse_filename;
- case sAllowGroups:
- while ((arg = strdelim(&cp)) && *arg != '\0') {
- if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
- fatal("%s line %d: too many allow groups.\n",
- filename, linenum);
- options->allow_groups[options->num_allow_groups++] = xstrdup(arg);
- }
- break;
+ case sStrictModes:
+ intptr = &options->strict_modes;
+ goto parse_flag;
- case sDenyGroups:
- while ((arg = strdelim(&cp)) && *arg != '\0') {
- if (options->num_deny_groups >= MAX_DENY_GROUPS)
- fatal("%s line %d: too many deny groups.\n",
- filename, linenum);
- options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
- }
- break;
+ case sKeepAlives:
+ intptr = &options->keepalives;
+ goto parse_flag;
- case sCiphers:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: Missing argument.", filename, linenum);
- if (!ciphers_valid(arg))
- fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
- filename, linenum, arg ? arg : "<NONE>");
- if (options->ciphers == NULL)
- options->ciphers = xstrdup(arg);
- break;
+ case sEmptyPasswd:
+ intptr = &options->permit_empty_passwd;
+ goto parse_flag;
- case sMacs:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: Missing argument.", filename, linenum);
- if (!mac_valid(arg))
- fatal("%s line %d: Bad SSH2 mac spec '%s'.",
- filename, linenum, arg ? arg : "<NONE>");
- if (options->macs == NULL)
- options->macs = xstrdup(arg);
- break;
+ case sPermitUserEnvironment:
+ intptr = &options->permit_user_env;
+ goto parse_flag;
- case sProtocol:
- intptr = &options->protocol;
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: Missing argument.", filename, linenum);
- value = proto_spec(arg);
- if (value == SSH_PROTO_UNKNOWN)
- fatal("%s line %d: Bad protocol spec '%s'.",
- filename, linenum, arg ? arg : "<NONE>");
- if (*intptr == SSH_PROTO_UNKNOWN)
- *intptr = value;
- break;
+ case sUseLogin:
+ intptr = &options->use_login;
+ goto parse_flag;
- case sSubsystem:
- if(options->num_subsystems >= MAX_SUBSYSTEMS) {
- fatal("%s line %d: too many subsystems defined.",
- filename, linenum);
- }
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: Missing subsystem name.",
- filename, linenum);
- for (i = 0; i < options->num_subsystems; i++)
- if(strcmp(arg, options->subsystem_name[i]) == 0)
- fatal("%s line %d: Subsystem '%s' already defined.",
- filename, linenum, arg);
- options->subsystem_name[options->num_subsystems] = xstrdup(arg);
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: Missing subsystem command.",
- filename, linenum);
- options->subsystem_command[options->num_subsystems] = xstrdup(arg);
- options->num_subsystems++;
- break;
+ case sCompression:
+ intptr = &options->compression;
+ goto parse_flag;
- case sMaxStartups:
- arg = strdelim(&cp);
- if (!arg || *arg == '\0')
- fatal("%s line %d: Missing MaxStartups spec.",
- filename, linenum);
- if (sscanf(arg, "%d:%d:%d",
- &options->max_startups_begin,
- &options->max_startups_rate,
- &options->max_startups) == 3) {
- if (options->max_startups_begin >
- options->max_startups ||
- options->max_startups_rate > 100 ||
- options->max_startups_rate < 1)
- fatal("%s line %d: Illegal MaxStartups spec.",
- filename, linenum);
- break;
- }
- intptr = &options->max_startups;
- goto parse_int;
+ case sGatewayPorts:
+ intptr = &options->gateway_ports;
+ goto parse_flag;
- case sBanner:
- charptr = &options->banner;
- goto parse_filename;
+ case sVerifyReverseMapping:
+ intptr = &options->verify_reverse_mapping;
+ goto parse_flag;
- default:
- fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n",
- filename, linenum, arg, opcode);
- exit(1);
+ case sLogFacility:
+ intptr = (int *) &options->log_facility;
+ arg = strdelim(&cp);
+ value = log_facility_number(arg);
+ if (value == SYSLOG_FACILITY_NOT_SET)
+ fatal("%.200s line %d: unsupported log facility '%s'",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (*intptr == -1)
+ *intptr = (SyslogFacility) value;
+ break;
+
+ case sLogLevel:
+ intptr = (int *) &options->log_level;
+ arg = strdelim(&cp);
+ value = log_level_number(arg);
+ if (value == SYSLOG_LEVEL_NOT_SET)
+ fatal("%.200s line %d: unsupported log level '%s'",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (*intptr == -1)
+ *intptr = (LogLevel) value;
+ break;
+
+ case sAllowTcpForwarding:
+ intptr = &options->allow_tcp_forwarding;
+ goto parse_flag;
+
+ case sUsePrivilegeSeparation:
+ intptr = &use_privsep;
+ goto parse_flag;
+
+ case sAllowUsers:
+ while ((arg = strdelim(&cp)) && *arg != '\0') {
+ if (options->num_allow_users >= MAX_ALLOW_USERS)
+ fatal("%s line %d: too many allow users.",
+ filename, linenum);
+ options->allow_users[options->num_allow_users++] =
+ xstrdup(arg);
}
- if ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
- fprintf(stderr,
- "%s line %d: garbage at end of line; \"%.200s\".\n",
- filename, linenum, arg);
- exit(1);
+ break;
+
+ case sDenyUsers:
+ while ((arg = strdelim(&cp)) && *arg != '\0') {
+ if (options->num_deny_users >= MAX_DENY_USERS)
+ fatal( "%s line %d: too many deny users.",
+ filename, linenum);
+ options->deny_users[options->num_deny_users++] =
+ xstrdup(arg);
+ }
+ break;
+
+ case sAllowGroups:
+ while ((arg = strdelim(&cp)) && *arg != '\0') {
+ if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
+ fatal("%s line %d: too many allow groups.",
+ filename, linenum);
+ options->allow_groups[options->num_allow_groups++] =
+ xstrdup(arg);
}
+ break;
+
+ case sDenyGroups:
+ while ((arg = strdelim(&cp)) && *arg != '\0') {
+ if (options->num_deny_groups >= MAX_DENY_GROUPS)
+ fatal("%s line %d: too many deny groups.",
+ filename, linenum);
+ options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
+ }
+ break;
+
+ case sCiphers:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: Missing argument.", filename, linenum);
+ if (!ciphers_valid(arg))
+ fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (options->ciphers == NULL)
+ options->ciphers = xstrdup(arg);
+ break;
+
+ case sMacs:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: Missing argument.", filename, linenum);
+ if (!mac_valid(arg))
+ fatal("%s line %d: Bad SSH2 mac spec '%s'.",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (options->macs == NULL)
+ options->macs = xstrdup(arg);
+ break;
+
+ case sProtocol:
+ intptr = &options->protocol;
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: Missing argument.", filename, linenum);
+ value = proto_spec(arg);
+ if (value == SSH_PROTO_UNKNOWN)
+ fatal("%s line %d: Bad protocol spec '%s'.",
+ filename, linenum, arg ? arg : "<NONE>");
+ if (*intptr == SSH_PROTO_UNKNOWN)
+ *intptr = value;
+ break;
+
+ case sSubsystem:
+ if (options->num_subsystems >= MAX_SUBSYSTEMS) {
+ fatal("%s line %d: too many subsystems defined.",
+ filename, linenum);
+ }
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: Missing subsystem name.",
+ filename, linenum);
+ for (i = 0; i < options->num_subsystems; i++)
+ if (strcmp(arg, options->subsystem_name[i]) == 0)
+ fatal("%s line %d: Subsystem '%s' already defined.",
+ filename, linenum, arg);
+ options->subsystem_name[options->num_subsystems] = xstrdup(arg);
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: Missing subsystem command.",
+ filename, linenum);
+ options->subsystem_command[options->num_subsystems] = xstrdup(arg);
+ options->num_subsystems++;
+ break;
+
+ case sMaxStartups:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: Missing MaxStartups spec.",
+ filename, linenum);
+ if ((n = sscanf(arg, "%d:%d:%d",
+ &options->max_startups_begin,
+ &options->max_startups_rate,
+ &options->max_startups)) == 3) {
+ if (options->max_startups_begin >
+ options->max_startups ||
+ options->max_startups_rate > 100 ||
+ options->max_startups_rate < 1)
+ fatal("%s line %d: Illegal MaxStartups spec.",
+ filename, linenum);
+ } else if (n != 1)
+ fatal("%s line %d: Illegal MaxStartups spec.",
+ filename, linenum);
+ else
+ options->max_startups = options->max_startups_begin;
+ break;
+
+ case sBanner:
+ charptr = &options->banner;
+ goto parse_filename;
+ /*
+ * These options can contain %X options expanded at
+ * connect time, so that you can specify paths like:
+ *
+ * AuthorizedKeysFile /etc/ssh_keys/%u
+ */
+ case sAuthorizedKeysFile:
+ case sAuthorizedKeysFile2:
+ charptr = (opcode == sAuthorizedKeysFile ) ?
+ &options->authorized_keys_file :
+ &options->authorized_keys_file2;
+ goto parse_filename;
+
+ case sClientAliveInterval:
+ intptr = &options->client_alive_interval;
+ goto parse_time;
+
+ case sClientAliveCountMax:
+ intptr = &options->client_alive_count_max;
+ goto parse_int;
+
+ case sDeprecated:
+ logit("%s line %d: Deprecated option %s",
+ filename, linenum, arg);
+ while (arg)
+ arg = strdelim(&cp);
+ break;
+
+ case sUnsupported:
+ logit("%s line %d: Unsupported option %s",
+ filename, linenum, arg);
+ while (arg)
+ arg = strdelim(&cp);
+ break;
+
+ default:
+ fatal("%s line %d: Missing handler for opcode %s (%d)",
+ filename, linenum, arg, opcode);
}
- fclose(f);
- if (bad_options > 0) {
- fprintf(stderr, "%s: terminating, %d bad configuration options\n",
- filename, bad_options);
+ if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
+ fatal("%s line %d: garbage at end of line; \"%.200s\".",
+ filename, linenum, arg);
+ return 0;
+}
+
+/* Reads the server configuration file. */
+
+void
+read_server_config(ServerOptions *options, const char *filename)
+{
+ int linenum, bad_options = 0;
+ char line[1024];
+ FILE *f;
+
+ debug2("read_server_config: filename %s", filename);
+ f = fopen(filename, "r");
+ if (!f) {
+ perror(filename);
exit(1);
}
+ linenum = 0;
+ while (fgets(line, sizeof(line), f)) {
+ /* Update line number counter. */
+ linenum++;
+ if (process_server_config_line(options, line, filename, linenum) != 0)
+ bad_options++;
+ }
+ fclose(f);
+ if (bad_options > 0)
+ fatal("%s: terminating, %d bad configuration options",
+ filename, bad_options);
}
andersk / openssh.git / blobdiff