diff options
Diffstat (limited to 'crypto/openssh/servconf.c')
| -rw-r--r-- | crypto/openssh/servconf.c | 955 |
1 files changed, 0 insertions, 955 deletions
diff --git a/crypto/openssh/servconf.c b/crypto/openssh/servconf.c deleted file mode 100644 index 2510659ee4b9..000000000000 --- a/crypto/openssh/servconf.c +++ /dev/null @@ -1,955 +0,0 @@ -/* - * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland - * All rights reserved - * - * As far as I am concerned, the code I have written for this software - * can be used freely for any purpose. Any derived versions of this - * software must be clearly marked as such, and if the derived work is - * incompatible with the protocol description in the RFC file, it must be - * called by a name other than "ssh" or "Secure Shell". - */ - -#include "includes.h" -RCSID("$OpenBSD: servconf.c,v 1.116 2003/02/21 09:05:53 markus Exp $"); - -#if defined(KRB4) -#include <krb.h> -#endif -#if defined(KRB5) -#ifdef HEIMDAL -#include <krb.h> -#else -/* 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 "ssh.h" -#include "log.h" -#include "servconf.h" -#include "xmalloc.h" -#include "compat.h" -#include "pathnames.h" -#include "tildexpand.h" -#include "misc.h" -#include "cipher.h" -#include "kex.h" -#include "mac.h" - -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. */ - -void -initialize_server_options(ServerOptions *options) -{ - memset(options, 0, sizeof(*options)); - - /* Portable-specific options */ - options->pam_authentication_via_kbd_int = -1; - - /* Standard Options */ - options->num_ports = 0; - options->ports_from_cmdline = 0; - options->listen_addrs = NULL; - options->num_host_key_files = 0; - options->pid_file = NULL; - options->server_key_bits = -1; - options->login_grace_time = -1; - options->key_regeneration_time = -1; - options->permit_root_login = PERMIT_NOT_SET; - options->ignore_rhosts = -1; - options->ignore_user_known_hosts = -1; - options->print_motd = -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 = 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; -#if defined(KRB4) || defined(KRB5) - options->kerberos_authentication = -1; - options->kerberos_or_local_passwd = -1; - options->kerberos_ticket_cleanup = -1; -#endif -#if defined(AFS) || defined(KRB5) - options->kerberos_tgt_passing = -1; -#endif -#ifdef AFS - options->afs_token_passing = -1; -#endif - options->password_authentication = -1; - options->kbd_interactive_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->num_allow_groups = 0; - options->num_deny_groups = 0; - options->ciphers = NULL; - options->macs = NULL; - options->protocol = SSH_PROTO_UNKNOWN; - options->gateway_ports = -1; - options->num_subsystems = 0; - options->max_startups_begin = -1; - options->max_startups_rate = -1; - options->max_startups = -1; - options->banner = NULL; - 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->pam_authentication_via_kbd_int == -1) - options->pam_authentication_via_kbd_int = 0; - - /* 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_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, 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 = 120; - if (options->key_regeneration_time == -1) - options->key_regeneration_time = 3600; - if (options->permit_root_login == PERMIT_NOT_SET) - options->permit_root_login = PERMIT_YES; - if (options->ignore_rhosts == -1) - options->ignore_rhosts = 1; - if (options->ignore_user_known_hosts == -1) - options->ignore_user_known_hosts = 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; - if (options->x11_use_localhost == -1) - options->x11_use_localhost = 1; - if (options->xauth_location == NULL) - 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 == SYSLOG_FACILITY_NOT_SET) - options->log_facility = SYSLOG_FACILITY_AUTH; - 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; -#if defined(KRB4) || defined(KRB5) - if (options->kerberos_authentication == -1) - 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 -#if defined(AFS) || defined(KRB5) - if (options->kerberos_tgt_passing == -1) - options->kerberos_tgt_passing = 0; -#endif -#ifdef AFS - if (options->afs_token_passing == -1) - options->afs_token_passing = 0; -#endif - if (options->password_authentication == -1) - options->password_authentication = 1; - if (options->kbd_interactive_authentication == -1) - options->kbd_interactive_authentication = 0; - 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->gateway_ports = 0; - if (options->max_startups == -1) - options->max_startups = 10; - if (options->max_startups_rate == -1) - options->max_startups_rate = 100; /* 100% */ - if (options->max_startups_begin == -1) - options->max_startups_begin = options->max_startups; - 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 */ - sPAMAuthenticationViaKbdInt, - /* Standard Options */ - sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, - sPermitRootLogin, sLogFacility, sLogLevel, - sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, -#if defined(KRB4) || defined(KRB5) - sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, -#endif -#if defined(AFS) || defined(KRB5) - sKerberosTgtPassing, -#endif -#ifdef AFS - sAFSTokenPassing, -#endif - sChallengeResponseAuthentication, - sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, - 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, sVerifyReverseMapping, sHostbasedAuthentication, - sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, - sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2, - sUsePrivilegeSeparation, - sDeprecated -} ServerOpCodes; - -/* Textual representation of the tokens. */ -static struct { - const char *name; - ServerOpCodes opcode; -} keywords[] = { - /* Portable-specific options */ - { "PAMAuthenticationViaKbdInt", sPAMAuthenticationViaKbdInt }, - /* Standard Options */ - { "port", sPort }, - { "hostkey", sHostKeyFile }, - { "hostdsakey", sHostKeyFile }, /* alias */ - { "pidfile", sPidFile }, - { "serverkeybits", sServerKeyBits }, - { "logingracetime", sLoginGraceTime }, - { "keyregenerationinterval", sKeyRegenerationTime }, - { "permitrootlogin", sPermitRootLogin }, - { "syslogfacility", sLogFacility }, - { "loglevel", sLogLevel }, - { "rhostsauthentication", sRhostsAuthentication }, - { "rhostsrsaauthentication", sRhostsRSAAuthentication }, - { "hostbasedauthentication", sHostbasedAuthentication }, - { "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly }, - { "rsaauthentication", sRSAAuthentication }, - { "pubkeyauthentication", sPubkeyAuthentication }, - { "dsaauthentication", sPubkeyAuthentication }, /* alias */ -#if defined(KRB4) || defined(KRB5) - { "kerberosauthentication", sKerberosAuthentication }, - { "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, - { "kerberosticketcleanup", sKerberosTicketCleanup }, -#endif -#if defined(AFS) || defined(KRB5) - { "kerberostgtpassing", sKerberosTgtPassing }, -#endif -#ifdef AFS - { "afstokenpassing", sAFSTokenPassing }, -#endif - { "passwordauthentication", sPasswordAuthentication }, - { "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, - { "challengeresponseauthentication", sChallengeResponseAuthentication }, - { "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ - { "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 }, - { "compression", sCompression }, - { "keepalive", sKeepAlives }, - { "allowtcpforwarding", sAllowTcpForwarding }, - { "allowusers", sAllowUsers }, - { "denyusers", sDenyUsers }, - { "allowgroups", sAllowGroups }, - { "denygroups", sDenyGroups }, - { "ciphers", sCiphers }, - { "macs", sMacs }, - { "protocol", sProtocol }, - { "gatewayports", sGatewayPorts }, - { "subsystem", sSubsystem }, - { "maxstartups", sMaxStartups }, - { "banner", sBanner }, - { "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 or sBadOption. - */ - -static ServerOpCodes -parse_token(const char *cp, const char *filename, - int linenum) -{ - u_int i; - - for (i = 0; keywords[i].name; i++) - if (strcasecmp(cp, keywords[i].name) == 0) - return keywords[i].opcode; - - error("%s: line %d: Bad configuration option: %s", - filename, linenum, cp); - return sBadOption; -} - -static void -add_listen_addr(ServerOptions *options, char *addr, u_short port) -{ - int i; - - if (options->num_ports == 0) - options->ports[options->num_ports++] = SSH_DEFAULT_PORT; - 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); -} - -static void -add_one_listen_addr(ServerOptions *options, char *addr, u_short port) -{ - struct addrinfo hints, *ai, *aitop; - char strport[NI_MAXSERV]; - int gaierr; - - 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) -{ - char *cp, **charptr, *arg, *p; - int *intptr, value, i, n; - ServerOpCodes opcode; - - cp = line; - arg = strdelim(&cp); - /* Ignore leading whitespace */ - if (*arg == '\0') - arg = strdelim(&cp); - if (!arg || !*arg || *arg == '#') - return 0; - intptr = NULL; - charptr = NULL; - opcode = parse_token(arg, filename, linenum); - switch (opcode) { - /* Portable-specific options */ - case sPAMAuthenticationViaKbdInt: - intptr = &options->pam_authentication_via_kbd_int; - 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); - 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; - - 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); - } - } 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 sPidFile: - charptr = &options->pid_file; - goto parse_filename; - - 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 sIgnoreUserKnownHosts: - intptr = &options->ignore_user_known_hosts; - goto parse_flag; - - case sRhostsAuthentication: - intptr = &options->rhosts_authentication; - goto parse_flag; - - case sRhostsRSAAuthentication: - intptr = &options->rhosts_rsa_authentication; - goto parse_flag; - - case sHostbasedAuthentication: - intptr = &options->hostbased_authentication; - goto parse_flag; - - case sHostbasedUsesNameFromPacketOnly: - intptr = &options->hostbased_uses_name_from_packet_only; - goto parse_flag; - - case sRSAAuthentication: - intptr = &options->rsa_authentication; - goto parse_flag; - - case sPubkeyAuthentication: - intptr = &options->pubkey_authentication; - goto parse_flag; -#if defined(KRB4) || defined(KRB5) - case sKerberosAuthentication: - intptr = &options->kerberos_authentication; - goto parse_flag; - - case sKerberosOrLocalPasswd: - intptr = &options->kerberos_or_local_passwd; - goto parse_flag; - - case sKerberosTicketCleanup: - intptr = &options->kerberos_ticket_cleanup; - goto parse_flag; -#endif -#if defined(AFS) || defined(KRB5) - case sKerberosTgtPassing: - intptr = &options->kerberos_tgt_passing; - goto parse_flag; -#endif -#ifdef AFS - case sAFSTokenPassing: - intptr = &options->afs_token_passing; - goto parse_flag; -#endif - - case sPasswordAuthentication: - intptr = &options->password_authentication; - goto parse_flag; - - case sKbdInteractiveAuthentication: - intptr = &options->kbd_interactive_authentication; - goto parse_flag; - - case sChallengeResponseAuthentication: - intptr = &options->challenge_response_authentication; - goto parse_flag; - - case sPrintMotd: - intptr = &options->print_motd; - goto parse_flag; - - case sPrintLastLog: - intptr = &options->print_lastlog; - goto parse_flag; - - case sX11Forwarding: - intptr = &options->x11_forwarding; - goto parse_flag; - - case sX11DisplayOffset: - intptr = &options->x11_display_offset; - goto parse_int; - - case sX11UseLocalhost: - intptr = &options->x11_use_localhost; - goto parse_flag; - - 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 sPermitUserEnvironment: - intptr = &options->permit_user_env; - goto parse_flag; - - case sUseLogin: - intptr = &options->use_login; - goto parse_flag; - - case sCompression: - intptr = &options->compression; - goto parse_flag; - - case sGatewayPorts: - intptr = &options->gateway_ports; - goto parse_flag; - - case sVerifyReverseMapping: - intptr = &options->verify_reverse_mapping; - goto parse_flag; - - 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); - } - 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: - log("%s line %d: Deprecated 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); - } - 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); -} |