144a80bd9a
if we didn't find any of them. This reduces log spam about key files for deprecated algorithms, which we look for but don't generate. PR: 208254 MFC after: 3 days
2378 lines
71 KiB
C
2378 lines
71 KiB
C
|
|
/* $OpenBSD: servconf.c,v 1.285 2016/02/17 05:29:04 djm Exp $ */
|
|
/*
|
|
* 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("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
|
|
#include <ctype.h>
|
|
#include <fcntl.h>
|
|
#include <netdb.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <stdarg.h>
|
|
#include <errno.h>
|
|
#ifdef HAVE_UTIL_H
|
|
#include <util.h>
|
|
#endif
|
|
|
|
#include "openbsd-compat/sys-queue.h"
|
|
#include "xmalloc.h"
|
|
#include "ssh.h"
|
|
#include "log.h"
|
|
#include "buffer.h"
|
|
#include "misc.h"
|
|
#include "servconf.h"
|
|
#include "compat.h"
|
|
#include "pathnames.h"
|
|
#include "cipher.h"
|
|
#include "key.h"
|
|
#include "kex.h"
|
|
#include "mac.h"
|
|
#include "match.h"
|
|
#include "channels.h"
|
|
#include "groupaccess.h"
|
|
#include "canohost.h"
|
|
#include "packet.h"
|
|
#include "hostfile.h"
|
|
#include "auth.h"
|
|
#include "myproposal.h"
|
|
#include "digest.h"
|
|
#include "version.h"
|
|
|
|
static void add_listen_addr(ServerOptions *, char *, int);
|
|
static void add_one_listen_addr(ServerOptions *, char *, int);
|
|
|
|
/* Use of privilege separation or not */
|
|
extern int use_privsep;
|
|
extern Buffer cfg;
|
|
|
|
/* Initializes the server options to their default values. */
|
|
|
|
void
|
|
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->queued_listen_addrs = NULL;
|
|
options->num_queued_listens = 0;
|
|
options->listen_addrs = NULL;
|
|
options->address_family = -1;
|
|
options->num_host_key_files = 0;
|
|
options->num_host_cert_files = 0;
|
|
options->host_key_agent = NULL;
|
|
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->permit_tty = -1;
|
|
options->permit_user_rc = -1;
|
|
options->xauth_location = NULL;
|
|
options->strict_modes = -1;
|
|
options->tcp_keep_alive = -1;
|
|
options->log_facility = SYSLOG_FACILITY_NOT_SET;
|
|
options->log_level = SYSLOG_LEVEL_NOT_SET;
|
|
options->rhosts_rsa_authentication = -1;
|
|
options->hostbased_authentication = -1;
|
|
options->hostbased_uses_name_from_packet_only = -1;
|
|
options->hostbased_key_types = NULL;
|
|
options->hostkeyalgorithms = NULL;
|
|
options->rsa_authentication = -1;
|
|
options->pubkey_authentication = -1;
|
|
options->pubkey_key_types = NULL;
|
|
options->kerberos_authentication = -1;
|
|
options->kerberos_or_local_passwd = -1;
|
|
options->kerberos_ticket_cleanup = -1;
|
|
options->kerberos_get_afs_token = -1;
|
|
options->gss_authentication=-1;
|
|
options->gss_cleanup_creds = -1;
|
|
options->gss_strict_acceptor = -1;
|
|
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->rekey_limit = -1;
|
|
options->rekey_interval = -1;
|
|
options->allow_tcp_forwarding = -1;
|
|
options->allow_streamlocal_forwarding = -1;
|
|
options->allow_agent_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->kex_algorithms = NULL;
|
|
options->protocol = SSH_PROTO_UNKNOWN;
|
|
options->fwd_opts.gateway_ports = -1;
|
|
options->fwd_opts.streamlocal_bind_mask = (mode_t)-1;
|
|
options->fwd_opts.streamlocal_bind_unlink = -1;
|
|
options->num_subsystems = 0;
|
|
options->max_startups_begin = -1;
|
|
options->max_startups_rate = -1;
|
|
options->max_startups = -1;
|
|
options->max_authtries = -1;
|
|
options->max_sessions = -1;
|
|
options->banner = NULL;
|
|
options->use_dns = -1;
|
|
options->client_alive_interval = -1;
|
|
options->client_alive_count_max = -1;
|
|
options->num_authkeys_files = 0;
|
|
options->num_accept_env = 0;
|
|
options->permit_tun = -1;
|
|
options->num_permitted_opens = -1;
|
|
options->adm_forced_command = NULL;
|
|
options->chroot_directory = NULL;
|
|
options->authorized_keys_command = NULL;
|
|
options->authorized_keys_command_user = NULL;
|
|
options->revoked_keys_file = NULL;
|
|
options->trusted_user_ca_keys = NULL;
|
|
options->authorized_principals_file = NULL;
|
|
options->authorized_principals_command = NULL;
|
|
options->authorized_principals_command_user = NULL;
|
|
options->ip_qos_interactive = -1;
|
|
options->ip_qos_bulk = -1;
|
|
options->version_addendum = NULL;
|
|
options->fingerprint_hash = -1;
|
|
}
|
|
|
|
/* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
|
|
static int
|
|
option_clear_or_none(const char *o)
|
|
{
|
|
return o == NULL || strcasecmp(o, "none") == 0;
|
|
}
|
|
|
|
static void
|
|
assemble_algorithms(ServerOptions *o)
|
|
{
|
|
if (kex_assemble_names(KEX_SERVER_ENCRYPT, &o->ciphers) != 0 ||
|
|
kex_assemble_names(KEX_SERVER_MAC, &o->macs) != 0 ||
|
|
kex_assemble_names(KEX_SERVER_KEX, &o->kex_algorithms) != 0 ||
|
|
kex_assemble_names(KEX_DEFAULT_PK_ALG,
|
|
&o->hostkeyalgorithms) != 0 ||
|
|
kex_assemble_names(KEX_DEFAULT_PK_ALG,
|
|
&o->hostbased_key_types) != 0 ||
|
|
kex_assemble_names(KEX_DEFAULT_PK_ALG, &o->pubkey_key_types) != 0)
|
|
fatal("kex_assemble_names failed");
|
|
}
|
|
|
|
void
|
|
fill_default_server_options(ServerOptions *options)
|
|
{
|
|
int i;
|
|
|
|
/* Portable-specific options */
|
|
if (options->use_pam == -1)
|
|
options->use_pam = 1;
|
|
|
|
/* Standard Options */
|
|
if (options->protocol == SSH_PROTO_UNKNOWN)
|
|
options->protocol = SSH_PROTO_2;
|
|
#define add_host_key_file(path) \
|
|
do { \
|
|
if (access((path), O_RDONLY) == 0) \
|
|
options->host_key_files \
|
|
[options->num_host_key_files++] = (path); \
|
|
} while (0)
|
|
if (options->num_host_key_files == 0) {
|
|
/* fill default hostkeys for protocols */
|
|
if (options->protocol & SSH_PROTO_1)
|
|
add_host_key_file(_PATH_HOST_KEY_FILE);
|
|
if (options->protocol & SSH_PROTO_2) {
|
|
add_host_key_file(_PATH_HOST_RSA_KEY_FILE);
|
|
add_host_key_file(_PATH_HOST_DSA_KEY_FILE);
|
|
#ifdef OPENSSL_HAS_ECC
|
|
add_host_key_file(_PATH_HOST_ECDSA_KEY_FILE);
|
|
#endif
|
|
add_host_key_file(_PATH_HOST_ED25519_KEY_FILE);
|
|
}
|
|
}
|
|
#undef add_host_key_file
|
|
if (options->num_host_key_files == 0)
|
|
fatal("No host key files found");
|
|
/* No certificates by default */
|
|
if (options->num_ports == 0)
|
|
options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
|
|
if (options->address_family == -1)
|
|
options->address_family = AF_UNSPEC;
|
|
if (options->listen_addrs == NULL)
|
|
add_listen_addr(options, NULL, 0);
|
|
if (options->pid_file == NULL)
|
|
options->pid_file = xstrdup(_PATH_SSH_DAEMON_PID_FILE);
|
|
if (options->server_key_bits == -1)
|
|
options->server_key_bits = 1024;
|
|
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_NO;
|
|
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 = 1;
|
|
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 = xstrdup(_PATH_XAUTH);
|
|
if (options->permit_tty == -1)
|
|
options->permit_tty = 1;
|
|
if (options->permit_user_rc == -1)
|
|
options->permit_user_rc = 1;
|
|
if (options->strict_modes == -1)
|
|
options->strict_modes = 1;
|
|
if (options->tcp_keep_alive == -1)
|
|
options->tcp_keep_alive = 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_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 (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;
|
|
if (options->kerberos_get_afs_token == -1)
|
|
options->kerberos_get_afs_token = 0;
|
|
if (options->gss_authentication == -1)
|
|
options->gss_authentication = 0;
|
|
if (options->gss_cleanup_creds == -1)
|
|
options->gss_cleanup_creds = 1;
|
|
if (options->gss_strict_acceptor == -1)
|
|
options->gss_strict_acceptor = 0;
|
|
if (options->password_authentication == -1)
|
|
options->password_authentication = 0;
|
|
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 = COMP_DELAYED;
|
|
if (options->rekey_limit == -1)
|
|
options->rekey_limit = 0;
|
|
if (options->rekey_interval == -1)
|
|
options->rekey_interval = 0;
|
|
if (options->allow_tcp_forwarding == -1)
|
|
options->allow_tcp_forwarding = FORWARD_ALLOW;
|
|
if (options->allow_streamlocal_forwarding == -1)
|
|
options->allow_streamlocal_forwarding = FORWARD_ALLOW;
|
|
if (options->allow_agent_forwarding == -1)
|
|
options->allow_agent_forwarding = 1;
|
|
if (options->fwd_opts.gateway_ports == -1)
|
|
options->fwd_opts.gateway_ports = 0;
|
|
if (options->max_startups == -1)
|
|
options->max_startups = 100;
|
|
if (options->max_startups_rate == -1)
|
|
options->max_startups_rate = 30; /* 30% */
|
|
if (options->max_startups_begin == -1)
|
|
options->max_startups_begin = 10;
|
|
if (options->max_authtries == -1)
|
|
options->max_authtries = DEFAULT_AUTH_FAIL_MAX;
|
|
if (options->max_sessions == -1)
|
|
options->max_sessions = DEFAULT_SESSIONS_MAX;
|
|
if (options->use_dns == -1)
|
|
options->use_dns = 1;
|
|
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->num_authkeys_files == 0) {
|
|
options->authorized_keys_files[options->num_authkeys_files++] =
|
|
xstrdup(_PATH_SSH_USER_PERMITTED_KEYS);
|
|
options->authorized_keys_files[options->num_authkeys_files++] =
|
|
xstrdup(_PATH_SSH_USER_PERMITTED_KEYS2);
|
|
}
|
|
if (options->permit_tun == -1)
|
|
options->permit_tun = SSH_TUNMODE_NO;
|
|
if (options->ip_qos_interactive == -1)
|
|
options->ip_qos_interactive = IPTOS_LOWDELAY;
|
|
if (options->ip_qos_bulk == -1)
|
|
options->ip_qos_bulk = IPTOS_THROUGHPUT;
|
|
if (options->version_addendum == NULL)
|
|
options->version_addendum = xstrdup(SSH_VERSION_FREEBSD);
|
|
if (options->fwd_opts.streamlocal_bind_mask == (mode_t)-1)
|
|
options->fwd_opts.streamlocal_bind_mask = 0177;
|
|
if (options->fwd_opts.streamlocal_bind_unlink == -1)
|
|
options->fwd_opts.streamlocal_bind_unlink = 0;
|
|
if (options->fingerprint_hash == -1)
|
|
options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
|
|
|
|
assemble_algorithms(options);
|
|
|
|
/* Turn privilege separation and sandboxing on by default */
|
|
if (use_privsep == -1)
|
|
use_privsep = PRIVSEP_ON;
|
|
|
|
#define CLEAR_ON_NONE(v) \
|
|
do { \
|
|
if (option_clear_or_none(v)) { \
|
|
free(v); \
|
|
v = NULL; \
|
|
} \
|
|
} while(0)
|
|
CLEAR_ON_NONE(options->pid_file);
|
|
CLEAR_ON_NONE(options->xauth_location);
|
|
CLEAR_ON_NONE(options->banner);
|
|
CLEAR_ON_NONE(options->trusted_user_ca_keys);
|
|
CLEAR_ON_NONE(options->revoked_keys_file);
|
|
CLEAR_ON_NONE(options->authorized_principals_file);
|
|
CLEAR_ON_NONE(options->adm_forced_command);
|
|
CLEAR_ON_NONE(options->chroot_directory);
|
|
for (i = 0; i < options->num_host_key_files; i++)
|
|
CLEAR_ON_NONE(options->host_key_files[i]);
|
|
for (i = 0; i < options->num_host_cert_files; i++)
|
|
CLEAR_ON_NONE(options->host_cert_files[i]);
|
|
#undef CLEAR_ON_NONE
|
|
|
|
#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,
|
|
sRhostsRSAAuthentication, sRSAAuthentication,
|
|
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
|
|
sKerberosGetAFSToken,
|
|
sKerberosTgtPassing, sChallengeResponseAuthentication,
|
|
sPasswordAuthentication, sKbdInteractiveAuthentication,
|
|
sListenAddress, sAddressFamily,
|
|
sPrintMotd, sPrintLastLog, sIgnoreRhosts,
|
|
sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost,
|
|
sPermitTTY, sStrictModes, sEmptyPasswd, sTCPKeepAlive,
|
|
sPermitUserEnvironment, sUseLogin, sAllowTcpForwarding, sCompression,
|
|
sRekeyLimit, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups,
|
|
sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile,
|
|
sGatewayPorts, sPubkeyAuthentication, sPubkeyAcceptedKeyTypes,
|
|
sXAuthLocation, sSubsystem, sMaxStartups, sMaxAuthTries, sMaxSessions,
|
|
sBanner, sUseDNS, sHostbasedAuthentication,
|
|
sHostbasedUsesNameFromPacketOnly, sHostbasedAcceptedKeyTypes,
|
|
sHostKeyAlgorithms,
|
|
sClientAliveInterval, sClientAliveCountMax, sAuthorizedKeysFile,
|
|
sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
|
|
sAcceptEnv, sPermitTunnel,
|
|
sMatch, sPermitOpen, sForceCommand, sChrootDirectory,
|
|
sUsePrivilegeSeparation, sAllowAgentForwarding,
|
|
sHostCertificate,
|
|
sRevokedKeys, sTrustedUserCAKeys, sAuthorizedPrincipalsFile,
|
|
sAuthorizedPrincipalsCommand, sAuthorizedPrincipalsCommandUser,
|
|
sKexAlgorithms, sIPQoS, sVersionAddendum,
|
|
sAuthorizedKeysCommand, sAuthorizedKeysCommandUser,
|
|
sAuthenticationMethods, sHostKeyAgent, sPermitUserRC,
|
|
sStreamLocalBindMask, sStreamLocalBindUnlink,
|
|
sAllowStreamLocalForwarding, sFingerprintHash,
|
|
sDeprecated, sUnsupported
|
|
} ServerOpCodes;
|
|
|
|
#define SSHCFG_GLOBAL 0x01 /* allowed in main section of sshd_config */
|
|
#define SSHCFG_MATCH 0x02 /* allowed inside a Match section */
|
|
#define SSHCFG_ALL (SSHCFG_GLOBAL|SSHCFG_MATCH)
|
|
|
|
/* Textual representation of the tokens. */
|
|
static struct {
|
|
const char *name;
|
|
ServerOpCodes opcode;
|
|
u_int flags;
|
|
} keywords[] = {
|
|
/* Portable-specific options */
|
|
#ifdef USE_PAM
|
|
{ "usepam", sUsePAM, SSHCFG_GLOBAL },
|
|
#else
|
|
{ "usepam", sUnsupported, SSHCFG_GLOBAL },
|
|
#endif
|
|
{ "pamauthenticationviakbdint", sDeprecated, SSHCFG_GLOBAL },
|
|
/* Standard Options */
|
|
{ "port", sPort, SSHCFG_GLOBAL },
|
|
{ "hostkey", sHostKeyFile, SSHCFG_GLOBAL },
|
|
{ "hostdsakey", sHostKeyFile, SSHCFG_GLOBAL }, /* alias */
|
|
{ "hostkeyagent", sHostKeyAgent, SSHCFG_GLOBAL },
|
|
{ "pidfile", sPidFile, SSHCFG_GLOBAL },
|
|
{ "serverkeybits", sServerKeyBits, SSHCFG_GLOBAL },
|
|
{ "logingracetime", sLoginGraceTime, SSHCFG_GLOBAL },
|
|
{ "keyregenerationinterval", sKeyRegenerationTime, SSHCFG_GLOBAL },
|
|
{ "permitrootlogin", sPermitRootLogin, SSHCFG_ALL },
|
|
{ "syslogfacility", sLogFacility, SSHCFG_GLOBAL },
|
|
{ "loglevel", sLogLevel, SSHCFG_GLOBAL },
|
|
{ "rhostsauthentication", sDeprecated, SSHCFG_GLOBAL },
|
|
{ "rhostsrsaauthentication", sRhostsRSAAuthentication, SSHCFG_ALL },
|
|
{ "hostbasedauthentication", sHostbasedAuthentication, SSHCFG_ALL },
|
|
{ "hostbasedusesnamefrompacketonly", sHostbasedUsesNameFromPacketOnly, SSHCFG_ALL },
|
|
{ "hostbasedacceptedkeytypes", sHostbasedAcceptedKeyTypes, SSHCFG_ALL },
|
|
{ "hostkeyalgorithms", sHostKeyAlgorithms, SSHCFG_GLOBAL },
|
|
{ "rsaauthentication", sRSAAuthentication, SSHCFG_ALL },
|
|
{ "pubkeyauthentication", sPubkeyAuthentication, SSHCFG_ALL },
|
|
{ "pubkeyacceptedkeytypes", sPubkeyAcceptedKeyTypes, SSHCFG_ALL },
|
|
{ "dsaauthentication", sPubkeyAuthentication, SSHCFG_GLOBAL }, /* alias */
|
|
#ifdef KRB5
|
|
{ "kerberosauthentication", sKerberosAuthentication, SSHCFG_ALL },
|
|
{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd, SSHCFG_GLOBAL },
|
|
{ "kerberosticketcleanup", sKerberosTicketCleanup, SSHCFG_GLOBAL },
|
|
#ifdef USE_AFS
|
|
{ "kerberosgetafstoken", sKerberosGetAFSToken, SSHCFG_GLOBAL },
|
|
#else
|
|
{ "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
|
|
#endif
|
|
#else
|
|
{ "kerberosauthentication", sUnsupported, SSHCFG_ALL },
|
|
{ "kerberosorlocalpasswd", sUnsupported, SSHCFG_GLOBAL },
|
|
{ "kerberosticketcleanup", sUnsupported, SSHCFG_GLOBAL },
|
|
{ "kerberosgetafstoken", sUnsupported, SSHCFG_GLOBAL },
|
|
#endif
|
|
{ "kerberostgtpassing", sUnsupported, SSHCFG_GLOBAL },
|
|
{ "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
|
|
#ifdef GSSAPI
|
|
{ "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
|
|
{ "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
|
|
{ "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
|
|
#else
|
|
{ "gssapiauthentication", sUnsupported, SSHCFG_ALL },
|
|
{ "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
|
|
{ "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
|
|
#endif
|
|
{ "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
|
|
{ "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
|
|
{ "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
|
|
{ "skeyauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL }, /* alias */
|
|
{ "checkmail", sDeprecated, SSHCFG_GLOBAL },
|
|
{ "listenaddress", sListenAddress, SSHCFG_GLOBAL },
|
|
{ "addressfamily", sAddressFamily, SSHCFG_GLOBAL },
|
|
{ "printmotd", sPrintMotd, SSHCFG_GLOBAL },
|
|
#ifdef DISABLE_LASTLOG
|
|
{ "printlastlog", sUnsupported, SSHCFG_GLOBAL },
|
|
#else
|
|
{ "printlastlog", sPrintLastLog, SSHCFG_GLOBAL },
|
|
#endif
|
|
{ "ignorerhosts", sIgnoreRhosts, SSHCFG_GLOBAL },
|
|
{ "ignoreuserknownhosts", sIgnoreUserKnownHosts, SSHCFG_GLOBAL },
|
|
{ "x11forwarding", sX11Forwarding, SSHCFG_ALL },
|
|
{ "x11displayoffset", sX11DisplayOffset, SSHCFG_ALL },
|
|
{ "x11uselocalhost", sX11UseLocalhost, SSHCFG_ALL },
|
|
{ "xauthlocation", sXAuthLocation, SSHCFG_GLOBAL },
|
|
{ "strictmodes", sStrictModes, SSHCFG_GLOBAL },
|
|
{ "permitemptypasswords", sEmptyPasswd, SSHCFG_ALL },
|
|
{ "permituserenvironment", sPermitUserEnvironment, SSHCFG_GLOBAL },
|
|
{ "uselogin", sUseLogin, SSHCFG_GLOBAL },
|
|
{ "compression", sCompression, SSHCFG_GLOBAL },
|
|
{ "rekeylimit", sRekeyLimit, SSHCFG_ALL },
|
|
{ "tcpkeepalive", sTCPKeepAlive, SSHCFG_GLOBAL },
|
|
{ "keepalive", sTCPKeepAlive, SSHCFG_GLOBAL }, /* obsolete alias */
|
|
{ "allowtcpforwarding", sAllowTcpForwarding, SSHCFG_ALL },
|
|
{ "allowagentforwarding", sAllowAgentForwarding, SSHCFG_ALL },
|
|
{ "allowusers", sAllowUsers, SSHCFG_ALL },
|
|
{ "denyusers", sDenyUsers, SSHCFG_ALL },
|
|
{ "allowgroups", sAllowGroups, SSHCFG_ALL },
|
|
{ "denygroups", sDenyGroups, SSHCFG_ALL },
|
|
{ "ciphers", sCiphers, SSHCFG_GLOBAL },
|
|
{ "macs", sMacs, SSHCFG_GLOBAL },
|
|
{ "protocol", sProtocol, SSHCFG_GLOBAL },
|
|
{ "gatewayports", sGatewayPorts, SSHCFG_ALL },
|
|
{ "subsystem", sSubsystem, SSHCFG_GLOBAL },
|
|
{ "maxstartups", sMaxStartups, SSHCFG_GLOBAL },
|
|
{ "maxauthtries", sMaxAuthTries, SSHCFG_ALL },
|
|
{ "maxsessions", sMaxSessions, SSHCFG_ALL },
|
|
{ "banner", sBanner, SSHCFG_ALL },
|
|
{ "usedns", sUseDNS, SSHCFG_GLOBAL },
|
|
{ "verifyreversemapping", sDeprecated, SSHCFG_GLOBAL },
|
|
{ "reversemappingcheck", sDeprecated, SSHCFG_GLOBAL },
|
|
{ "clientaliveinterval", sClientAliveInterval, SSHCFG_GLOBAL },
|
|
{ "clientalivecountmax", sClientAliveCountMax, SSHCFG_GLOBAL },
|
|
{ "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_ALL },
|
|
{ "authorizedkeysfile2", sDeprecated, SSHCFG_ALL },
|
|
{ "useprivilegeseparation", sUsePrivilegeSeparation, SSHCFG_GLOBAL},
|
|
{ "acceptenv", sAcceptEnv, SSHCFG_ALL },
|
|
{ "permittunnel", sPermitTunnel, SSHCFG_ALL },
|
|
{ "permittty", sPermitTTY, SSHCFG_ALL },
|
|
{ "permituserrc", sPermitUserRC, SSHCFG_ALL },
|
|
{ "match", sMatch, SSHCFG_ALL },
|
|
{ "permitopen", sPermitOpen, SSHCFG_ALL },
|
|
{ "forcecommand", sForceCommand, SSHCFG_ALL },
|
|
{ "chrootdirectory", sChrootDirectory, SSHCFG_ALL },
|
|
{ "hostcertificate", sHostCertificate, SSHCFG_GLOBAL },
|
|
{ "revokedkeys", sRevokedKeys, SSHCFG_ALL },
|
|
{ "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
|
|
{ "authorizedprincipalsfile", sAuthorizedPrincipalsFile, SSHCFG_ALL },
|
|
{ "kexalgorithms", sKexAlgorithms, SSHCFG_GLOBAL },
|
|
{ "ipqos", sIPQoS, SSHCFG_ALL },
|
|
{ "authorizedkeyscommand", sAuthorizedKeysCommand, SSHCFG_ALL },
|
|
{ "authorizedkeyscommanduser", sAuthorizedKeysCommandUser, SSHCFG_ALL },
|
|
{ "authorizedprincipalscommand", sAuthorizedPrincipalsCommand, SSHCFG_ALL },
|
|
{ "authorizedprincipalscommanduser", sAuthorizedPrincipalsCommandUser, SSHCFG_ALL },
|
|
{ "versionaddendum", sVersionAddendum, SSHCFG_GLOBAL },
|
|
{ "authenticationmethods", sAuthenticationMethods, SSHCFG_ALL },
|
|
{ "streamlocalbindmask", sStreamLocalBindMask, SSHCFG_ALL },
|
|
{ "streamlocalbindunlink", sStreamLocalBindUnlink, SSHCFG_ALL },
|
|
{ "allowstreamlocalforwarding", sAllowStreamLocalForwarding, SSHCFG_ALL },
|
|
{ "fingerprinthash", sFingerprintHash, SSHCFG_GLOBAL },
|
|
{ "noneenabled", sUnsupported, SSHCFG_ALL },
|
|
{ "hpndisabled", sDeprecated, SSHCFG_ALL },
|
|
{ "hpnbuffersize", sDeprecated, SSHCFG_ALL },
|
|
{ "tcprcvbufpoll", sDeprecated, SSHCFG_ALL },
|
|
{ NULL, sBadOption, 0 }
|
|
};
|
|
|
|
static struct {
|
|
int val;
|
|
char *text;
|
|
} tunmode_desc[] = {
|
|
{ SSH_TUNMODE_NO, "no" },
|
|
{ SSH_TUNMODE_POINTOPOINT, "point-to-point" },
|
|
{ SSH_TUNMODE_ETHERNET, "ethernet" },
|
|
{ SSH_TUNMODE_YES, "yes" },
|
|
{ -1, NULL }
|
|
};
|
|
|
|
/*
|
|
* 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 *flags)
|
|
{
|
|
u_int i;
|
|
|
|
for (i = 0; keywords[i].name; i++)
|
|
if (strcasecmp(cp, keywords[i].name) == 0) {
|
|
*flags = keywords[i].flags;
|
|
return keywords[i].opcode;
|
|
}
|
|
|
|
error("%s: line %d: Bad configuration option: %s",
|
|
filename, linenum, cp);
|
|
return sBadOption;
|
|
}
|
|
|
|
char *
|
|
derelativise_path(const char *path)
|
|
{
|
|
char *expanded, *ret, cwd[PATH_MAX];
|
|
|
|
if (strcasecmp(path, "none") == 0)
|
|
return xstrdup("none");
|
|
expanded = tilde_expand_filename(path, getuid());
|
|
if (*expanded == '/')
|
|
return expanded;
|
|
if (getcwd(cwd, sizeof(cwd)) == NULL)
|
|
fatal("%s: getcwd: %s", __func__, strerror(errno));
|
|
xasprintf(&ret, "%s/%s", cwd, expanded);
|
|
free(expanded);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
add_listen_addr(ServerOptions *options, char *addr, int port)
|
|
{
|
|
u_int i;
|
|
|
|
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, int port)
|
|
{
|
|
struct addrinfo hints, *ai, *aitop;
|
|
char strport[NI_MAXSERV];
|
|
int gaierr;
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = options->address_family;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0;
|
|
snprintf(strport, sizeof strport, "%d", port);
|
|
if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0)
|
|
fatal("bad addr or host: %s (%s)",
|
|
addr ? addr : "<NULL>",
|
|
ssh_gai_strerror(gaierr));
|
|
for (ai = aitop; ai->ai_next; ai = ai->ai_next)
|
|
;
|
|
ai->ai_next = options->listen_addrs;
|
|
options->listen_addrs = aitop;
|
|
}
|
|
|
|
/*
|
|
* Queue a ListenAddress to be processed once we have all of the Ports
|
|
* and AddressFamily options.
|
|
*/
|
|
static void
|
|
queue_listen_addr(ServerOptions *options, char *addr, int port)
|
|
{
|
|
options->queued_listen_addrs = xreallocarray(
|
|
options->queued_listen_addrs, options->num_queued_listens + 1,
|
|
sizeof(addr));
|
|
options->queued_listen_ports = xreallocarray(
|
|
options->queued_listen_ports, options->num_queued_listens + 1,
|
|
sizeof(port));
|
|
options->queued_listen_addrs[options->num_queued_listens] =
|
|
xstrdup(addr);
|
|
options->queued_listen_ports[options->num_queued_listens] = port;
|
|
options->num_queued_listens++;
|
|
}
|
|
|
|
/*
|
|
* Process queued (text) ListenAddress entries.
|
|
*/
|
|
static void
|
|
process_queued_listen_addrs(ServerOptions *options)
|
|
{
|
|
u_int i;
|
|
|
|
if (options->num_ports == 0)
|
|
options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
|
|
if (options->address_family == -1)
|
|
options->address_family = AF_UNSPEC;
|
|
|
|
for (i = 0; i < options->num_queued_listens; i++) {
|
|
add_listen_addr(options, options->queued_listen_addrs[i],
|
|
options->queued_listen_ports[i]);
|
|
free(options->queued_listen_addrs[i]);
|
|
options->queued_listen_addrs[i] = NULL;
|
|
}
|
|
free(options->queued_listen_addrs);
|
|
options->queued_listen_addrs = NULL;
|
|
free(options->queued_listen_ports);
|
|
options->queued_listen_ports = NULL;
|
|
options->num_queued_listens = 0;
|
|
}
|
|
|
|
struct connection_info *
|
|
get_connection_info(int populate, int use_dns)
|
|
{
|
|
static struct connection_info ci;
|
|
|
|
if (!populate)
|
|
return &ci;
|
|
ci.host = get_canonical_hostname(use_dns);
|
|
ci.address = get_remote_ipaddr();
|
|
ci.laddress = get_local_ipaddr(packet_get_connection_in());
|
|
ci.lport = get_local_port();
|
|
return &ci;
|
|
}
|
|
|
|
/*
|
|
* The strategy for the Match blocks is that the config file is parsed twice.
|
|
*
|
|
* The first time is at startup. activep is initialized to 1 and the
|
|
* directives in the global context are processed and acted on. Hitting a
|
|
* Match directive unsets activep and the directives inside the block are
|
|
* checked for syntax only.
|
|
*
|
|
* The second time is after a connection has been established but before
|
|
* authentication. activep is initialized to 2 and global config directives
|
|
* are ignored since they have already been processed. If the criteria in a
|
|
* Match block is met, activep is set and the subsequent directives
|
|
* processed and actioned until EOF or another Match block unsets it. Any
|
|
* options set are copied into the main server config.
|
|
*
|
|
* Potential additions/improvements:
|
|
* - Add Match support for pre-kex directives, eg Protocol, Ciphers.
|
|
*
|
|
* - Add a Tag directive (idea from David Leonard) ala pf, eg:
|
|
* Match Address 192.168.0.*
|
|
* Tag trusted
|
|
* Match Group wheel
|
|
* Tag trusted
|
|
* Match Tag trusted
|
|
* AllowTcpForwarding yes
|
|
* GatewayPorts clientspecified
|
|
* [...]
|
|
*
|
|
* - Add a PermittedChannelRequests directive
|
|
* Match Group shell
|
|
* PermittedChannelRequests session,forwarded-tcpip
|
|
*/
|
|
|
|
static int
|
|
match_cfg_line_group(const char *grps, int line, const char *user)
|
|
{
|
|
int result = 0;
|
|
struct passwd *pw;
|
|
|
|
if (user == NULL)
|
|
goto out;
|
|
|
|
if ((pw = getpwnam(user)) == NULL) {
|
|
debug("Can't match group at line %d because user %.100s does "
|
|
"not exist", line, user);
|
|
} else if (ga_init(pw->pw_name, pw->pw_gid) == 0) {
|
|
debug("Can't Match group because user %.100s not in any group "
|
|
"at line %d", user, line);
|
|
} else if (ga_match_pattern_list(grps) != 1) {
|
|
debug("user %.100s does not match group list %.100s at line %d",
|
|
user, grps, line);
|
|
} else {
|
|
debug("user %.100s matched group list %.100s at line %d", user,
|
|
grps, line);
|
|
result = 1;
|
|
}
|
|
out:
|
|
ga_free();
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* All of the attributes on a single Match line are ANDed together, so we need
|
|
* to check every attribute and set the result to zero if any attribute does
|
|
* not match.
|
|
*/
|
|
static int
|
|
match_cfg_line(char **condition, int line, struct connection_info *ci)
|
|
{
|
|
int result = 1, attributes = 0, port;
|
|
char *arg, *attrib, *cp = *condition;
|
|
|
|
if (ci == NULL)
|
|
debug3("checking syntax for 'Match %s'", cp);
|
|
else
|
|
debug3("checking match for '%s' user %s host %s addr %s "
|
|
"laddr %s lport %d", cp, ci->user ? ci->user : "(null)",
|
|
ci->host ? ci->host : "(null)",
|
|
ci->address ? ci->address : "(null)",
|
|
ci->laddress ? ci->laddress : "(null)", ci->lport);
|
|
|
|
while ((attrib = strdelim(&cp)) && *attrib != '\0') {
|
|
attributes++;
|
|
if (strcasecmp(attrib, "all") == 0) {
|
|
if (attributes != 1 ||
|
|
((arg = strdelim(&cp)) != NULL && *arg != '\0')) {
|
|
error("'all' cannot be combined with other "
|
|
"Match attributes");
|
|
return -1;
|
|
}
|
|
*condition = cp;
|
|
return 1;
|
|
}
|
|
if ((arg = strdelim(&cp)) == NULL || *arg == '\0') {
|
|
error("Missing Match criteria for %s", attrib);
|
|
return -1;
|
|
}
|
|
if (strcasecmp(attrib, "user") == 0) {
|
|
if (ci == NULL || ci->user == NULL) {
|
|
result = 0;
|
|
continue;
|
|
}
|
|
if (match_pattern_list(ci->user, arg, 0) != 1)
|
|
result = 0;
|
|
else
|
|
debug("user %.100s matched 'User %.100s' at "
|
|
"line %d", ci->user, arg, line);
|
|
} else if (strcasecmp(attrib, "group") == 0) {
|
|
if (ci == NULL || ci->user == NULL) {
|
|
result = 0;
|
|
continue;
|
|
}
|
|
switch (match_cfg_line_group(arg, line, ci->user)) {
|
|
case -1:
|
|
return -1;
|
|
case 0:
|
|
result = 0;
|
|
}
|
|
} else if (strcasecmp(attrib, "host") == 0) {
|
|
if (ci == NULL || ci->host == NULL) {
|
|
result = 0;
|
|
continue;
|
|
}
|
|
if (match_hostname(ci->host, arg) != 1)
|
|
result = 0;
|
|
else
|
|
debug("connection from %.100s matched 'Host "
|
|
"%.100s' at line %d", ci->host, arg, line);
|
|
} else if (strcasecmp(attrib, "address") == 0) {
|
|
if (ci == NULL || ci->address == NULL) {
|
|
result = 0;
|
|
continue;
|
|
}
|
|
switch (addr_match_list(ci->address, arg)) {
|
|
case 1:
|
|
debug("connection from %.100s matched 'Address "
|
|
"%.100s' at line %d", ci->address, arg, line);
|
|
break;
|
|
case 0:
|
|
case -1:
|
|
result = 0;
|
|
break;
|
|
case -2:
|
|
return -1;
|
|
}
|
|
} else if (strcasecmp(attrib, "localaddress") == 0){
|
|
if (ci == NULL || ci->laddress == NULL) {
|
|
result = 0;
|
|
continue;
|
|
}
|
|
switch (addr_match_list(ci->laddress, arg)) {
|
|
case 1:
|
|
debug("connection from %.100s matched "
|
|
"'LocalAddress %.100s' at line %d",
|
|
ci->laddress, arg, line);
|
|
break;
|
|
case 0:
|
|
case -1:
|
|
result = 0;
|
|
break;
|
|
case -2:
|
|
return -1;
|
|
}
|
|
} else if (strcasecmp(attrib, "localport") == 0) {
|
|
if ((port = a2port(arg)) == -1) {
|
|
error("Invalid LocalPort '%s' on Match line",
|
|
arg);
|
|
return -1;
|
|
}
|
|
if (ci == NULL || ci->lport == 0) {
|
|
result = 0;
|
|
continue;
|
|
}
|
|
/* TODO support port lists */
|
|
if (port == ci->lport)
|
|
debug("connection from %.100s matched "
|
|
"'LocalPort %d' at line %d",
|
|
ci->laddress, port, line);
|
|
else
|
|
result = 0;
|
|
} else {
|
|
error("Unsupported Match attribute %s", attrib);
|
|
return -1;
|
|
}
|
|
}
|
|
if (attributes == 0) {
|
|
error("One or more attributes required for Match");
|
|
return -1;
|
|
}
|
|
if (ci != NULL)
|
|
debug3("match %sfound", result ? "" : "not ");
|
|
*condition = cp;
|
|
return result;
|
|
}
|
|
|
|
#define WHITESPACE " \t\r\n"
|
|
|
|
/* Multistate option parsing */
|
|
struct multistate {
|
|
char *key;
|
|
int value;
|
|
};
|
|
static const struct multistate multistate_addressfamily[] = {
|
|
{ "inet", AF_INET },
|
|
{ "inet6", AF_INET6 },
|
|
{ "any", AF_UNSPEC },
|
|
{ NULL, -1 }
|
|
};
|
|
static const struct multistate multistate_permitrootlogin[] = {
|
|
{ "without-password", PERMIT_NO_PASSWD },
|
|
{ "prohibit-password", PERMIT_NO_PASSWD },
|
|
{ "forced-commands-only", PERMIT_FORCED_ONLY },
|
|
{ "yes", PERMIT_YES },
|
|
{ "no", PERMIT_NO },
|
|
{ NULL, -1 }
|
|
};
|
|
static const struct multistate multistate_compression[] = {
|
|
{ "delayed", COMP_DELAYED },
|
|
{ "yes", COMP_ZLIB },
|
|
{ "no", COMP_NONE },
|
|
{ NULL, -1 }
|
|
};
|
|
static const struct multistate multistate_gatewayports[] = {
|
|
{ "clientspecified", 2 },
|
|
{ "yes", 1 },
|
|
{ "no", 0 },
|
|
{ NULL, -1 }
|
|
};
|
|
static const struct multistate multistate_privsep[] = {
|
|
{ "yes", PRIVSEP_NOSANDBOX },
|
|
{ "sandbox", PRIVSEP_ON },
|
|
{ "nosandbox", PRIVSEP_NOSANDBOX },
|
|
{ "no", PRIVSEP_OFF },
|
|
{ NULL, -1 }
|
|
};
|
|
static const struct multistate multistate_tcpfwd[] = {
|
|
{ "yes", FORWARD_ALLOW },
|
|
{ "all", FORWARD_ALLOW },
|
|
{ "no", FORWARD_DENY },
|
|
{ "remote", FORWARD_REMOTE },
|
|
{ "local", FORWARD_LOCAL },
|
|
{ NULL, -1 }
|
|
};
|
|
|
|
int
|
|
process_server_config_line(ServerOptions *options, char *line,
|
|
const char *filename, int linenum, int *activep,
|
|
struct connection_info *connectinfo)
|
|
{
|
|
char *cp, **charptr, *arg, *p;
|
|
int cmdline = 0, *intptr, value, value2, n, port;
|
|
SyslogFacility *log_facility_ptr;
|
|
LogLevel *log_level_ptr;
|
|
ServerOpCodes opcode;
|
|
u_int i, flags = 0;
|
|
size_t len;
|
|
long long val64;
|
|
const struct multistate *multistate_ptr;
|
|
|
|
cp = line;
|
|
if ((arg = strdelim(&cp)) == NULL)
|
|
return 0;
|
|
/* 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, &flags);
|
|
|
|
if (activep == NULL) { /* We are processing a command line directive */
|
|
cmdline = 1;
|
|
activep = &cmdline;
|
|
}
|
|
if (*activep && opcode != sMatch)
|
|
debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
|
|
if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
|
|
if (connectinfo == NULL) {
|
|
fatal("%s line %d: Directive '%s' is not allowed "
|
|
"within a Match block", filename, linenum, arg);
|
|
} else { /* this is a directive we have already processed */
|
|
while (arg)
|
|
arg = strdelim(&cp);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
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->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 (*activep && *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 (*activep && *intptr == -1)
|
|
*intptr = value;
|
|
break;
|
|
|
|
case sKeyRegenerationTime:
|
|
intptr = &options->key_regeneration_time;
|
|
goto parse_time;
|
|
|
|
case sListenAddress:
|
|
arg = strdelim(&cp);
|
|
if (arg == NULL || *arg == '\0')
|
|
fatal("%s line %d: missing address",
|
|
filename, linenum);
|
|
/* check for bare IPv6 address: no "[]" and 2 or more ":" */
|
|
if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
|
|
&& strchr(p+1, ':') != NULL) {
|
|
queue_listen_addr(options, arg, 0);
|
|
break;
|
|
}
|
|
p = hpdelim(&arg);
|
|
if (p == NULL)
|
|
fatal("%s line %d: bad address:port usage",
|
|
filename, linenum);
|
|
p = cleanhostname(p);
|
|
if (arg == NULL)
|
|
port = 0;
|
|
else if ((port = a2port(arg)) <= 0)
|
|
fatal("%s line %d: bad port number", filename, linenum);
|
|
|
|
queue_listen_addr(options, p, port);
|
|
|
|
break;
|
|
|
|
case sAddressFamily:
|
|
intptr = &options->address_family;
|
|
multistate_ptr = multistate_addressfamily;
|
|
parse_multistate:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing argument.",
|
|
filename, linenum);
|
|
value = -1;
|
|
for (i = 0; multistate_ptr[i].key != NULL; i++) {
|
|
if (strcasecmp(arg, multistate_ptr[i].key) == 0) {
|
|
value = multistate_ptr[i].value;
|
|
break;
|
|
}
|
|
}
|
|
if (value == -1)
|
|
fatal("%s line %d: unsupported option \"%s\".",
|
|
filename, linenum, arg);
|
|
if (*activep && *intptr == -1)
|
|
*intptr = value;
|
|
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 (*activep && *charptr == NULL) {
|
|
*charptr = derelativise_path(arg);
|
|
/* increase optional counter */
|
|
if (intptr != NULL)
|
|
*intptr = *intptr + 1;
|
|
}
|
|
break;
|
|
|
|
case sHostKeyAgent:
|
|
charptr = &options->host_key_agent;
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing socket name.",
|
|
filename, linenum);
|
|
if (*activep && *charptr == NULL)
|
|
*charptr = !strcmp(arg, SSH_AUTHSOCKET_ENV_NAME) ?
|
|
xstrdup(arg) : derelativise_path(arg);
|
|
break;
|
|
|
|
case sHostCertificate:
|
|
intptr = &options->num_host_cert_files;
|
|
if (*intptr >= MAX_HOSTKEYS)
|
|
fatal("%s line %d: too many host certificates "
|
|
"specified (max %d).", filename, linenum,
|
|
MAX_HOSTCERTS);
|
|
charptr = &options->host_cert_files[*intptr];
|
|
goto parse_filename;
|
|
break;
|
|
|
|
case sPidFile:
|
|
charptr = &options->pid_file;
|
|
goto parse_filename;
|
|
|
|
case sPermitRootLogin:
|
|
intptr = &options->permit_root_login;
|
|
multistate_ptr = multistate_permitrootlogin;
|
|
goto parse_multistate;
|
|
|
|
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 (*activep && *intptr == -1)
|
|
*intptr = value;
|
|
break;
|
|
|
|
case sIgnoreUserKnownHosts:
|
|
intptr = &options->ignore_user_known_hosts;
|
|
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 sHostbasedAcceptedKeyTypes:
|
|
charptr = &options->hostbased_key_types;
|
|
parse_keytypes:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: Missing argument.",
|
|
filename, linenum);
|
|
if (!sshkey_names_valid2(*arg == '+' ? arg + 1 : arg, 1))
|
|
fatal("%s line %d: Bad key types '%s'.",
|
|
filename, linenum, arg ? arg : "<NONE>");
|
|
if (*activep && *charptr == NULL)
|
|
*charptr = xstrdup(arg);
|
|
break;
|
|
|
|
case sHostKeyAlgorithms:
|
|
charptr = &options->hostkeyalgorithms;
|
|
goto parse_keytypes;
|
|
|
|
case sRSAAuthentication:
|
|
intptr = &options->rsa_authentication;
|
|
goto parse_flag;
|
|
|
|
case sPubkeyAuthentication:
|
|
intptr = &options->pubkey_authentication;
|
|
goto parse_flag;
|
|
|
|
case sPubkeyAcceptedKeyTypes:
|
|
charptr = &options->pubkey_key_types;
|
|
goto parse_keytypes;
|
|
|
|
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;
|
|
|
|
case sKerberosGetAFSToken:
|
|
intptr = &options->kerberos_get_afs_token;
|
|
goto parse_flag;
|
|
|
|
case sGssAuthentication:
|
|
intptr = &options->gss_authentication;
|
|
goto parse_flag;
|
|
|
|
case sGssCleanupCreds:
|
|
intptr = &options->gss_cleanup_creds;
|
|
goto parse_flag;
|
|
|
|
case sGssStrictAcceptor:
|
|
intptr = &options->gss_strict_acceptor;
|
|
goto parse_flag;
|
|
|
|
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 sPermitTTY:
|
|
intptr = &options->permit_tty;
|
|
goto parse_flag;
|
|
|
|
case sPermitUserRC:
|
|
intptr = &options->permit_user_rc;
|
|
goto parse_flag;
|
|
|
|
case sStrictModes:
|
|
intptr = &options->strict_modes;
|
|
goto parse_flag;
|
|
|
|
case sTCPKeepAlive:
|
|
intptr = &options->tcp_keep_alive;
|
|
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;
|
|
multistate_ptr = multistate_compression;
|
|
goto parse_multistate;
|
|
|
|
case sRekeyLimit:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%.200s line %d: Missing argument.", filename,
|
|
linenum);
|
|
if (strcmp(arg, "default") == 0) {
|
|
val64 = 0;
|
|
} else {
|
|
if (scan_scaled(arg, &val64) == -1)
|
|
fatal("%.200s line %d: Bad number '%s': %s",
|
|
filename, linenum, arg, strerror(errno));
|
|
if (val64 != 0 && val64 < 16)
|
|
fatal("%.200s line %d: RekeyLimit too small",
|
|
filename, linenum);
|
|
}
|
|
if (*activep && options->rekey_limit == -1)
|
|
options->rekey_limit = val64;
|
|
if (cp != NULL) { /* optional rekey interval present */
|
|
if (strcmp(cp, "none") == 0) {
|
|
(void)strdelim(&cp); /* discard */
|
|
break;
|
|
}
|
|
intptr = &options->rekey_interval;
|
|
goto parse_time;
|
|
}
|
|
break;
|
|
|
|
case sGatewayPorts:
|
|
intptr = &options->fwd_opts.gateway_ports;
|
|
multistate_ptr = multistate_gatewayports;
|
|
goto parse_multistate;
|
|
|
|
case sUseDNS:
|
|
intptr = &options->use_dns;
|
|
goto parse_flag;
|
|
|
|
case sLogFacility:
|
|
log_facility_ptr = &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 (*log_facility_ptr == -1)
|
|
*log_facility_ptr = (SyslogFacility) value;
|
|
break;
|
|
|
|
case sLogLevel:
|
|
log_level_ptr = &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 (*log_level_ptr == -1)
|
|
*log_level_ptr = (LogLevel) value;
|
|
break;
|
|
|
|
case sAllowTcpForwarding:
|
|
intptr = &options->allow_tcp_forwarding;
|
|
multistate_ptr = multistate_tcpfwd;
|
|
goto parse_multistate;
|
|
|
|
case sAllowStreamLocalForwarding:
|
|
intptr = &options->allow_streamlocal_forwarding;
|
|
multistate_ptr = multistate_tcpfwd;
|
|
goto parse_multistate;
|
|
|
|
case sAllowAgentForwarding:
|
|
intptr = &options->allow_agent_forwarding;
|
|
goto parse_flag;
|
|
|
|
case sUsePrivilegeSeparation:
|
|
intptr = &use_privsep;
|
|
multistate_ptr = multistate_privsep;
|
|
goto parse_multistate;
|
|
|
|
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);
|
|
if (!*activep)
|
|
continue;
|
|
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);
|
|
if (!*activep)
|
|
continue;
|
|
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);
|
|
if (!*activep)
|
|
continue;
|
|
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);
|
|
if (!*activep)
|
|
continue;
|
|
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 == '+' ? arg + 1 : 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 == '+' ? arg + 1 : 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 sKexAlgorithms:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: Missing argument.",
|
|
filename, linenum);
|
|
if (!kex_names_valid(*arg == '+' ? arg + 1 : arg))
|
|
fatal("%s line %d: Bad SSH2 KexAlgorithms '%s'.",
|
|
filename, linenum, arg ? arg : "<NONE>");
|
|
if (options->kex_algorithms == NULL)
|
|
options->kex_algorithms = 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);
|
|
if (!*activep) {
|
|
arg = strdelim(&cp);
|
|
break;
|
|
}
|
|
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);
|
|
|
|
/* Collect arguments (separate to executable) */
|
|
p = xstrdup(arg);
|
|
len = strlen(p) + 1;
|
|
while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
|
|
len += 1 + strlen(arg);
|
|
p = xreallocarray(p, 1, len);
|
|
strlcat(p, " ", len);
|
|
strlcat(p, arg, len);
|
|
}
|
|
options->subsystem_args[options->num_subsystems] = p;
|
|
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 sMaxAuthTries:
|
|
intptr = &options->max_authtries;
|
|
goto parse_int;
|
|
|
|
case sMaxSessions:
|
|
intptr = &options->max_sessions;
|
|
goto parse_int;
|
|
|
|
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:
|
|
if (*activep && options->num_authkeys_files == 0) {
|
|
while ((arg = strdelim(&cp)) && *arg != '\0') {
|
|
if (options->num_authkeys_files >=
|
|
MAX_AUTHKEYS_FILES)
|
|
fatal("%s line %d: "
|
|
"too many authorized keys files.",
|
|
filename, linenum);
|
|
options->authorized_keys_files[
|
|
options->num_authkeys_files++] =
|
|
tilde_expand_filename(arg, getuid());
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
case sAuthorizedPrincipalsFile:
|
|
charptr = &options->authorized_principals_file;
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing file name.",
|
|
filename, linenum);
|
|
if (*activep && *charptr == NULL) {
|
|
*charptr = tilde_expand_filename(arg, getuid());
|
|
/* increase optional counter */
|
|
if (intptr != NULL)
|
|
*intptr = *intptr + 1;
|
|
}
|
|
break;
|
|
|
|
case sClientAliveInterval:
|
|
intptr = &options->client_alive_interval;
|
|
goto parse_time;
|
|
|
|
case sClientAliveCountMax:
|
|
intptr = &options->client_alive_count_max;
|
|
goto parse_int;
|
|
|
|
case sAcceptEnv:
|
|
while ((arg = strdelim(&cp)) && *arg != '\0') {
|
|
if (strchr(arg, '=') != NULL)
|
|
fatal("%s line %d: Invalid environment name.",
|
|
filename, linenum);
|
|
if (options->num_accept_env >= MAX_ACCEPT_ENV)
|
|
fatal("%s line %d: too many allow env.",
|
|
filename, linenum);
|
|
if (!*activep)
|
|
continue;
|
|
options->accept_env[options->num_accept_env++] =
|
|
xstrdup(arg);
|
|
}
|
|
break;
|
|
|
|
case sPermitTunnel:
|
|
intptr = &options->permit_tun;
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: Missing yes/point-to-point/"
|
|
"ethernet/no argument.", filename, linenum);
|
|
value = -1;
|
|
for (i = 0; tunmode_desc[i].val != -1; i++)
|
|
if (strcmp(tunmode_desc[i].text, arg) == 0) {
|
|
value = tunmode_desc[i].val;
|
|
break;
|
|
}
|
|
if (value == -1)
|
|
fatal("%s line %d: Bad yes/point-to-point/ethernet/"
|
|
"no argument: %s", filename, linenum, arg);
|
|
if (*activep && *intptr == -1)
|
|
*intptr = value;
|
|
break;
|
|
|
|
case sMatch:
|
|
if (cmdline)
|
|
fatal("Match directive not supported as a command-line "
|
|
"option");
|
|
value = match_cfg_line(&cp, linenum, connectinfo);
|
|
if (value < 0)
|
|
fatal("%s line %d: Bad Match condition", filename,
|
|
linenum);
|
|
*activep = value;
|
|
break;
|
|
|
|
case sPermitOpen:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing PermitOpen specification",
|
|
filename, linenum);
|
|
n = options->num_permitted_opens; /* modified later */
|
|
if (strcmp(arg, "any") == 0) {
|
|
if (*activep && n == -1) {
|
|
channel_clear_adm_permitted_opens();
|
|
options->num_permitted_opens = 0;
|
|
}
|
|
break;
|
|
}
|
|
if (strcmp(arg, "none") == 0) {
|
|
if (*activep && n == -1) {
|
|
options->num_permitted_opens = 1;
|
|
channel_disable_adm_local_opens();
|
|
}
|
|
break;
|
|
}
|
|
if (*activep && n == -1)
|
|
channel_clear_adm_permitted_opens();
|
|
for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
|
|
p = hpdelim(&arg);
|
|
if (p == NULL)
|
|
fatal("%s line %d: missing host in PermitOpen",
|
|
filename, linenum);
|
|
p = cleanhostname(p);
|
|
if (arg == NULL || ((port = permitopen_port(arg)) < 0))
|
|
fatal("%s line %d: bad port number in "
|
|
"PermitOpen", filename, linenum);
|
|
if (*activep && n == -1)
|
|
options->num_permitted_opens =
|
|
channel_add_adm_permitted_opens(p, port);
|
|
}
|
|
break;
|
|
|
|
case sForceCommand:
|
|
if (cp == NULL || *cp == '\0')
|
|
fatal("%.200s line %d: Missing argument.", filename,
|
|
linenum);
|
|
len = strspn(cp, WHITESPACE);
|
|
if (*activep && options->adm_forced_command == NULL)
|
|
options->adm_forced_command = xstrdup(cp + len);
|
|
return 0;
|
|
|
|
case sChrootDirectory:
|
|
charptr = &options->chroot_directory;
|
|
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing file name.",
|
|
filename, linenum);
|
|
if (*activep && *charptr == NULL)
|
|
*charptr = xstrdup(arg);
|
|
break;
|
|
|
|
case sTrustedUserCAKeys:
|
|
charptr = &options->trusted_user_ca_keys;
|
|
goto parse_filename;
|
|
|
|
case sRevokedKeys:
|
|
charptr = &options->revoked_keys_file;
|
|
goto parse_filename;
|
|
|
|
case sIPQoS:
|
|
arg = strdelim(&cp);
|
|
if ((value = parse_ipqos(arg)) == -1)
|
|
fatal("%s line %d: Bad IPQoS value: %s",
|
|
filename, linenum, arg);
|
|
arg = strdelim(&cp);
|
|
if (arg == NULL)
|
|
value2 = value;
|
|
else if ((value2 = parse_ipqos(arg)) == -1)
|
|
fatal("%s line %d: Bad IPQoS value: %s",
|
|
filename, linenum, arg);
|
|
if (*activep) {
|
|
options->ip_qos_interactive = value;
|
|
options->ip_qos_bulk = value2;
|
|
}
|
|
break;
|
|
|
|
case sVersionAddendum:
|
|
if (cp == NULL || *cp == '\0')
|
|
fatal("%.200s line %d: Missing argument.", filename,
|
|
linenum);
|
|
len = strspn(cp, WHITESPACE);
|
|
if (*activep && options->version_addendum == NULL) {
|
|
if (strcasecmp(cp + len, "none") == 0)
|
|
options->version_addendum = xstrdup("");
|
|
else if (strchr(cp + len, '\r') != NULL)
|
|
fatal("%.200s line %d: Invalid argument",
|
|
filename, linenum);
|
|
else
|
|
options->version_addendum = xstrdup(cp + len);
|
|
}
|
|
return 0;
|
|
|
|
case sAuthorizedKeysCommand:
|
|
if (cp == NULL)
|
|
fatal("%.200s line %d: Missing argument.", filename,
|
|
linenum);
|
|
len = strspn(cp, WHITESPACE);
|
|
if (*activep && options->authorized_keys_command == NULL) {
|
|
if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
|
|
fatal("%.200s line %d: AuthorizedKeysCommand "
|
|
"must be an absolute path",
|
|
filename, linenum);
|
|
options->authorized_keys_command = xstrdup(cp + len);
|
|
}
|
|
return 0;
|
|
|
|
case sAuthorizedKeysCommandUser:
|
|
charptr = &options->authorized_keys_command_user;
|
|
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing AuthorizedKeysCommandUser "
|
|
"argument.", filename, linenum);
|
|
if (*activep && *charptr == NULL)
|
|
*charptr = xstrdup(arg);
|
|
break;
|
|
|
|
case sAuthorizedPrincipalsCommand:
|
|
if (cp == NULL)
|
|
fatal("%.200s line %d: Missing argument.", filename,
|
|
linenum);
|
|
len = strspn(cp, WHITESPACE);
|
|
if (*activep &&
|
|
options->authorized_principals_command == NULL) {
|
|
if (cp[len] != '/' && strcasecmp(cp + len, "none") != 0)
|
|
fatal("%.200s line %d: "
|
|
"AuthorizedPrincipalsCommand must be "
|
|
"an absolute path", filename, linenum);
|
|
options->authorized_principals_command =
|
|
xstrdup(cp + len);
|
|
}
|
|
return 0;
|
|
|
|
case sAuthorizedPrincipalsCommandUser:
|
|
charptr = &options->authorized_principals_command_user;
|
|
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing "
|
|
"AuthorizedPrincipalsCommandUser argument.",
|
|
filename, linenum);
|
|
if (*activep && *charptr == NULL)
|
|
*charptr = xstrdup(arg);
|
|
break;
|
|
|
|
case sAuthenticationMethods:
|
|
if (options->num_auth_methods == 0) {
|
|
while ((arg = strdelim(&cp)) && *arg != '\0') {
|
|
if (options->num_auth_methods >=
|
|
MAX_AUTH_METHODS)
|
|
fatal("%s line %d: "
|
|
"too many authentication methods.",
|
|
filename, linenum);
|
|
if (auth2_methods_valid(arg, 0) != 0)
|
|
fatal("%s line %d: invalid "
|
|
"authentication method list.",
|
|
filename, linenum);
|
|
if (!*activep)
|
|
continue;
|
|
options->auth_methods[
|
|
options->num_auth_methods++] = xstrdup(arg);
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
case sStreamLocalBindMask:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%s line %d: missing StreamLocalBindMask "
|
|
"argument.", filename, linenum);
|
|
/* Parse mode in octal format */
|
|
value = strtol(arg, &p, 8);
|
|
if (arg == p || value < 0 || value > 0777)
|
|
fatal("%s line %d: Bad mask.", filename, linenum);
|
|
if (*activep)
|
|
options->fwd_opts.streamlocal_bind_mask = (mode_t)value;
|
|
break;
|
|
|
|
case sStreamLocalBindUnlink:
|
|
intptr = &options->fwd_opts.streamlocal_bind_unlink;
|
|
goto parse_flag;
|
|
|
|
case sFingerprintHash:
|
|
arg = strdelim(&cp);
|
|
if (!arg || *arg == '\0')
|
|
fatal("%.200s line %d: Missing argument.",
|
|
filename, linenum);
|
|
if ((value = ssh_digest_alg_by_name(arg)) == -1)
|
|
fatal("%.200s line %d: Invalid hash algorithm \"%s\".",
|
|
filename, linenum, arg);
|
|
if (*activep)
|
|
options->fingerprint_hash = value;
|
|
break;
|
|
|
|
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);
|
|
}
|
|
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
|
|
load_server_config(const char *filename, Buffer *conf)
|
|
{
|
|
char line[4096], *cp;
|
|
FILE *f;
|
|
int lineno = 0;
|
|
|
|
debug2("%s: filename %s", __func__, filename);
|
|
if ((f = fopen(filename, "r")) == NULL) {
|
|
perror(filename);
|
|
exit(1);
|
|
}
|
|
buffer_clear(conf);
|
|
while (fgets(line, sizeof(line), f)) {
|
|
lineno++;
|
|
if (strlen(line) == sizeof(line) - 1)
|
|
fatal("%s line %d too long", filename, lineno);
|
|
/*
|
|
* Trim out comments and strip whitespace
|
|
* NB - preserve newlines, they are needed to reproduce
|
|
* line numbers later for error messages
|
|
*/
|
|
if ((cp = strchr(line, '#')) != NULL)
|
|
memcpy(cp, "\n", 2);
|
|
cp = line + strspn(line, " \t\r");
|
|
|
|
buffer_append(conf, cp, strlen(cp));
|
|
}
|
|
buffer_append(conf, "\0", 1);
|
|
fclose(f);
|
|
debug2("%s: done config len = %d", __func__, buffer_len(conf));
|
|
}
|
|
|
|
void
|
|
parse_server_match_config(ServerOptions *options,
|
|
struct connection_info *connectinfo)
|
|
{
|
|
ServerOptions mo;
|
|
|
|
initialize_server_options(&mo);
|
|
parse_server_config(&mo, "reprocess config", &cfg, connectinfo);
|
|
copy_set_server_options(options, &mo, 0);
|
|
}
|
|
|
|
int parse_server_match_testspec(struct connection_info *ci, char *spec)
|
|
{
|
|
char *p;
|
|
|
|
while ((p = strsep(&spec, ",")) && *p != '\0') {
|
|
if (strncmp(p, "addr=", 5) == 0) {
|
|
ci->address = xstrdup(p + 5);
|
|
} else if (strncmp(p, "host=", 5) == 0) {
|
|
ci->host = xstrdup(p + 5);
|
|
} else if (strncmp(p, "user=", 5) == 0) {
|
|
ci->user = xstrdup(p + 5);
|
|
} else if (strncmp(p, "laddr=", 6) == 0) {
|
|
ci->laddress = xstrdup(p + 6);
|
|
} else if (strncmp(p, "lport=", 6) == 0) {
|
|
ci->lport = a2port(p + 6);
|
|
if (ci->lport == -1) {
|
|
fprintf(stderr, "Invalid port '%s' in test mode"
|
|
" specification %s\n", p+6, p);
|
|
return -1;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "Invalid test mode specification %s\n",
|
|
p);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* returns 1 for a complete spec, 0 for partial spec and -1 for an
|
|
* empty spec.
|
|
*/
|
|
int server_match_spec_complete(struct connection_info *ci)
|
|
{
|
|
if (ci->user && ci->host && ci->address)
|
|
return 1; /* complete */
|
|
if (!ci->user && !ci->host && !ci->address)
|
|
return -1; /* empty */
|
|
return 0; /* partial */
|
|
}
|
|
|
|
/*
|
|
* Copy any supported values that are set.
|
|
*
|
|
* If the preauth flag is set, we do not bother copying the string or
|
|
* array values that are not used pre-authentication, because any that we
|
|
* do use must be explictly sent in mm_getpwnamallow().
|
|
*/
|
|
void
|
|
copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
|
|
{
|
|
#define M_CP_INTOPT(n) do {\
|
|
if (src->n != -1) \
|
|
dst->n = src->n; \
|
|
} while (0)
|
|
|
|
M_CP_INTOPT(password_authentication);
|
|
M_CP_INTOPT(gss_authentication);
|
|
M_CP_INTOPT(rsa_authentication);
|
|
M_CP_INTOPT(pubkey_authentication);
|
|
M_CP_INTOPT(kerberos_authentication);
|
|
M_CP_INTOPT(hostbased_authentication);
|
|
M_CP_INTOPT(hostbased_uses_name_from_packet_only);
|
|
M_CP_INTOPT(kbd_interactive_authentication);
|
|
M_CP_INTOPT(permit_root_login);
|
|
M_CP_INTOPT(permit_empty_passwd);
|
|
|
|
M_CP_INTOPT(allow_tcp_forwarding);
|
|
M_CP_INTOPT(allow_streamlocal_forwarding);
|
|
M_CP_INTOPT(allow_agent_forwarding);
|
|
M_CP_INTOPT(permit_tun);
|
|
M_CP_INTOPT(fwd_opts.gateway_ports);
|
|
M_CP_INTOPT(x11_display_offset);
|
|
M_CP_INTOPT(x11_forwarding);
|
|
M_CP_INTOPT(x11_use_localhost);
|
|
M_CP_INTOPT(permit_tty);
|
|
M_CP_INTOPT(permit_user_rc);
|
|
M_CP_INTOPT(max_sessions);
|
|
M_CP_INTOPT(max_authtries);
|
|
M_CP_INTOPT(ip_qos_interactive);
|
|
M_CP_INTOPT(ip_qos_bulk);
|
|
M_CP_INTOPT(rekey_limit);
|
|
M_CP_INTOPT(rekey_interval);
|
|
|
|
/* M_CP_STROPT and M_CP_STRARRAYOPT should not appear before here */
|
|
#define M_CP_STROPT(n) do {\
|
|
if (src->n != NULL && dst->n != src->n) { \
|
|
free(dst->n); \
|
|
dst->n = src->n; \
|
|
} \
|
|
} while(0)
|
|
#define M_CP_STRARRAYOPT(n, num_n) do {\
|
|
if (src->num_n != 0) { \
|
|
for (dst->num_n = 0; dst->num_n < src->num_n; dst->num_n++) \
|
|
dst->n[dst->num_n] = xstrdup(src->n[dst->num_n]); \
|
|
} \
|
|
} while(0)
|
|
|
|
/* See comment in servconf.h */
|
|
COPY_MATCH_STRING_OPTS();
|
|
|
|
/* Arguments that accept '+...' need to be expanded */
|
|
assemble_algorithms(dst);
|
|
|
|
/*
|
|
* The only things that should be below this point are string options
|
|
* which are only used after authentication.
|
|
*/
|
|
if (preauth)
|
|
return;
|
|
|
|
/* These options may be "none" to clear a global setting */
|
|
M_CP_STROPT(adm_forced_command);
|
|
if (option_clear_or_none(dst->adm_forced_command)) {
|
|
free(dst->adm_forced_command);
|
|
dst->adm_forced_command = NULL;
|
|
}
|
|
M_CP_STROPT(chroot_directory);
|
|
if (option_clear_or_none(dst->chroot_directory)) {
|
|
free(dst->chroot_directory);
|
|
dst->chroot_directory = NULL;
|
|
}
|
|
}
|
|
|
|
#undef M_CP_INTOPT
|
|
#undef M_CP_STROPT
|
|
#undef M_CP_STRARRAYOPT
|
|
|
|
void
|
|
parse_server_config(ServerOptions *options, const char *filename, Buffer *conf,
|
|
struct connection_info *connectinfo)
|
|
{
|
|
int active, linenum, bad_options = 0;
|
|
char *cp, *obuf, *cbuf;
|
|
|
|
debug2("%s: config %s len %d", __func__, filename, buffer_len(conf));
|
|
|
|
obuf = cbuf = xstrdup(buffer_ptr(conf));
|
|
active = connectinfo ? 0 : 1;
|
|
linenum = 1;
|
|
while ((cp = strsep(&cbuf, "\n")) != NULL) {
|
|
if (process_server_config_line(options, cp, filename,
|
|
linenum++, &active, connectinfo) != 0)
|
|
bad_options++;
|
|
}
|
|
free(obuf);
|
|
if (bad_options > 0)
|
|
fatal("%s: terminating, %d bad configuration options",
|
|
filename, bad_options);
|
|
process_queued_listen_addrs(options);
|
|
}
|
|
|
|
static const char *
|
|
fmt_multistate_int(int val, const struct multistate *m)
|
|
{
|
|
u_int i;
|
|
|
|
for (i = 0; m[i].key != NULL; i++) {
|
|
if (m[i].value == val)
|
|
return m[i].key;
|
|
}
|
|
return "UNKNOWN";
|
|
}
|
|
|
|
static const char *
|
|
fmt_intarg(ServerOpCodes code, int val)
|
|
{
|
|
if (val == -1)
|
|
return "unset";
|
|
switch (code) {
|
|
case sAddressFamily:
|
|
return fmt_multistate_int(val, multistate_addressfamily);
|
|
case sPermitRootLogin:
|
|
return fmt_multistate_int(val, multistate_permitrootlogin);
|
|
case sGatewayPorts:
|
|
return fmt_multistate_int(val, multistate_gatewayports);
|
|
case sCompression:
|
|
return fmt_multistate_int(val, multistate_compression);
|
|
case sUsePrivilegeSeparation:
|
|
return fmt_multistate_int(val, multistate_privsep);
|
|
case sAllowTcpForwarding:
|
|
return fmt_multistate_int(val, multistate_tcpfwd);
|
|
case sAllowStreamLocalForwarding:
|
|
return fmt_multistate_int(val, multistate_tcpfwd);
|
|
case sFingerprintHash:
|
|
return ssh_digest_alg_name(val);
|
|
case sProtocol:
|
|
switch (val) {
|
|
case SSH_PROTO_1:
|
|
return "1";
|
|
case SSH_PROTO_2:
|
|
return "2";
|
|
case (SSH_PROTO_1|SSH_PROTO_2):
|
|
return "2,1";
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
default:
|
|
switch (val) {
|
|
case 0:
|
|
return "no";
|
|
case 1:
|
|
return "yes";
|
|
default:
|
|
return "UNKNOWN";
|
|
}
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
lookup_opcode_name(ServerOpCodes code)
|
|
{
|
|
u_int i;
|
|
|
|
for (i = 0; keywords[i].name != NULL; i++)
|
|
if (keywords[i].opcode == code)
|
|
return(keywords[i].name);
|
|
return "UNKNOWN";
|
|
}
|
|
|
|
static void
|
|
dump_cfg_int(ServerOpCodes code, int val)
|
|
{
|
|
printf("%s %d\n", lookup_opcode_name(code), val);
|
|
}
|
|
|
|
static void
|
|
dump_cfg_oct(ServerOpCodes code, int val)
|
|
{
|
|
printf("%s 0%o\n", lookup_opcode_name(code), val);
|
|
}
|
|
|
|
static void
|
|
dump_cfg_fmtint(ServerOpCodes code, int val)
|
|
{
|
|
printf("%s %s\n", lookup_opcode_name(code), fmt_intarg(code, val));
|
|
}
|
|
|
|
static void
|
|
dump_cfg_string(ServerOpCodes code, const char *val)
|
|
{
|
|
if (val == NULL)
|
|
return;
|
|
printf("%s %s\n", lookup_opcode_name(code),
|
|
val == NULL ? "none" : val);
|
|
}
|
|
|
|
static void
|
|
dump_cfg_strarray(ServerOpCodes code, u_int count, char **vals)
|
|
{
|
|
u_int i;
|
|
|
|
for (i = 0; i < count; i++)
|
|
printf("%s %s\n", lookup_opcode_name(code), vals[i]);
|
|
}
|
|
|
|
static void
|
|
dump_cfg_strarray_oneline(ServerOpCodes code, u_int count, char **vals)
|
|
{
|
|
u_int i;
|
|
|
|
if (count <= 0)
|
|
return;
|
|
printf("%s", lookup_opcode_name(code));
|
|
for (i = 0; i < count; i++)
|
|
printf(" %s", vals[i]);
|
|
printf("\n");
|
|
}
|
|
|
|
void
|
|
dump_config(ServerOptions *o)
|
|
{
|
|
u_int i;
|
|
int ret;
|
|
struct addrinfo *ai;
|
|
char addr[NI_MAXHOST], port[NI_MAXSERV], *s = NULL;
|
|
char *laddr1 = xstrdup(""), *laddr2 = NULL;
|
|
|
|
/* these are usually at the top of the config */
|
|
for (i = 0; i < o->num_ports; i++)
|
|
printf("port %d\n", o->ports[i]);
|
|
dump_cfg_fmtint(sProtocol, o->protocol);
|
|
dump_cfg_fmtint(sAddressFamily, o->address_family);
|
|
|
|
/*
|
|
* ListenAddress must be after Port. add_one_listen_addr pushes
|
|
* addresses onto a stack, so to maintain ordering we need to
|
|
* print these in reverse order.
|
|
*/
|
|
for (ai = o->listen_addrs; ai; ai = ai->ai_next) {
|
|
if ((ret = getnameinfo(ai->ai_addr, ai->ai_addrlen, addr,
|
|
sizeof(addr), port, sizeof(port),
|
|
NI_NUMERICHOST|NI_NUMERICSERV)) != 0) {
|
|
error("getnameinfo failed: %.100s",
|
|
(ret != EAI_SYSTEM) ? gai_strerror(ret) :
|
|
strerror(errno));
|
|
} else {
|
|
laddr2 = laddr1;
|
|
if (ai->ai_family == AF_INET6)
|
|
xasprintf(&laddr1, "listenaddress [%s]:%s\n%s",
|
|
addr, port, laddr2);
|
|
else
|
|
xasprintf(&laddr1, "listenaddress %s:%s\n%s",
|
|
addr, port, laddr2);
|
|
free(laddr2);
|
|
}
|
|
}
|
|
printf("%s", laddr1);
|
|
free(laddr1);
|
|
|
|
/* integer arguments */
|
|
#ifdef USE_PAM
|
|
dump_cfg_fmtint(sUsePAM, o->use_pam);
|
|
#endif
|
|
dump_cfg_int(sServerKeyBits, o->server_key_bits);
|
|
dump_cfg_int(sLoginGraceTime, o->login_grace_time);
|
|
dump_cfg_int(sKeyRegenerationTime, o->key_regeneration_time);
|
|
dump_cfg_int(sX11DisplayOffset, o->x11_display_offset);
|
|
dump_cfg_int(sMaxAuthTries, o->max_authtries);
|
|
dump_cfg_int(sMaxSessions, o->max_sessions);
|
|
dump_cfg_int(sClientAliveInterval, o->client_alive_interval);
|
|
dump_cfg_int(sClientAliveCountMax, o->client_alive_count_max);
|
|
dump_cfg_oct(sStreamLocalBindMask, o->fwd_opts.streamlocal_bind_mask);
|
|
|
|
/* formatted integer arguments */
|
|
dump_cfg_fmtint(sPermitRootLogin, o->permit_root_login);
|
|
dump_cfg_fmtint(sIgnoreRhosts, o->ignore_rhosts);
|
|
dump_cfg_fmtint(sIgnoreUserKnownHosts, o->ignore_user_known_hosts);
|
|
dump_cfg_fmtint(sRhostsRSAAuthentication, o->rhosts_rsa_authentication);
|
|
dump_cfg_fmtint(sHostbasedAuthentication, o->hostbased_authentication);
|
|
dump_cfg_fmtint(sHostbasedUsesNameFromPacketOnly,
|
|
o->hostbased_uses_name_from_packet_only);
|
|
dump_cfg_fmtint(sRSAAuthentication, o->rsa_authentication);
|
|
dump_cfg_fmtint(sPubkeyAuthentication, o->pubkey_authentication);
|
|
#ifdef KRB5
|
|
dump_cfg_fmtint(sKerberosAuthentication, o->kerberos_authentication);
|
|
dump_cfg_fmtint(sKerberosOrLocalPasswd, o->kerberos_or_local_passwd);
|
|
dump_cfg_fmtint(sKerberosTicketCleanup, o->kerberos_ticket_cleanup);
|
|
# ifdef USE_AFS
|
|
dump_cfg_fmtint(sKerberosGetAFSToken, o->kerberos_get_afs_token);
|
|
# endif
|
|
#endif
|
|
#ifdef GSSAPI
|
|
dump_cfg_fmtint(sGssAuthentication, o->gss_authentication);
|
|
dump_cfg_fmtint(sGssCleanupCreds, o->gss_cleanup_creds);
|
|
#endif
|
|
dump_cfg_fmtint(sPasswordAuthentication, o->password_authentication);
|
|
dump_cfg_fmtint(sKbdInteractiveAuthentication,
|
|
o->kbd_interactive_authentication);
|
|
dump_cfg_fmtint(sChallengeResponseAuthentication,
|
|
o->challenge_response_authentication);
|
|
dump_cfg_fmtint(sPrintMotd, o->print_motd);
|
|
#ifndef DISABLE_LASTLOG
|
|
dump_cfg_fmtint(sPrintLastLog, o->print_lastlog);
|
|
#endif
|
|
dump_cfg_fmtint(sX11Forwarding, o->x11_forwarding);
|
|
dump_cfg_fmtint(sX11UseLocalhost, o->x11_use_localhost);
|
|
dump_cfg_fmtint(sPermitTTY, o->permit_tty);
|
|
dump_cfg_fmtint(sPermitUserRC, o->permit_user_rc);
|
|
dump_cfg_fmtint(sStrictModes, o->strict_modes);
|
|
dump_cfg_fmtint(sTCPKeepAlive, o->tcp_keep_alive);
|
|
dump_cfg_fmtint(sEmptyPasswd, o->permit_empty_passwd);
|
|
dump_cfg_fmtint(sPermitUserEnvironment, o->permit_user_env);
|
|
dump_cfg_fmtint(sUseLogin, o->use_login);
|
|
dump_cfg_fmtint(sCompression, o->compression);
|
|
dump_cfg_fmtint(sGatewayPorts, o->fwd_opts.gateway_ports);
|
|
dump_cfg_fmtint(sUseDNS, o->use_dns);
|
|
dump_cfg_fmtint(sAllowTcpForwarding, o->allow_tcp_forwarding);
|
|
dump_cfg_fmtint(sAllowAgentForwarding, o->allow_agent_forwarding);
|
|
dump_cfg_fmtint(sAllowStreamLocalForwarding, o->allow_streamlocal_forwarding);
|
|
dump_cfg_fmtint(sUsePrivilegeSeparation, use_privsep);
|
|
dump_cfg_fmtint(sFingerprintHash, o->fingerprint_hash);
|
|
|
|
/* string arguments */
|
|
dump_cfg_string(sPidFile, o->pid_file);
|
|
dump_cfg_string(sXAuthLocation, o->xauth_location);
|
|
dump_cfg_string(sCiphers, o->ciphers ? o->ciphers : KEX_SERVER_ENCRYPT);
|
|
dump_cfg_string(sMacs, o->macs ? o->macs : KEX_SERVER_MAC);
|
|
dump_cfg_string(sBanner, o->banner);
|
|
dump_cfg_string(sForceCommand, o->adm_forced_command);
|
|
dump_cfg_string(sChrootDirectory, o->chroot_directory);
|
|
dump_cfg_string(sTrustedUserCAKeys, o->trusted_user_ca_keys);
|
|
dump_cfg_string(sRevokedKeys, o->revoked_keys_file);
|
|
dump_cfg_string(sAuthorizedPrincipalsFile,
|
|
o->authorized_principals_file);
|
|
dump_cfg_string(sVersionAddendum, *o->version_addendum == '\0'
|
|
? "none" : o->version_addendum);
|
|
dump_cfg_string(sAuthorizedKeysCommand, o->authorized_keys_command);
|
|
dump_cfg_string(sAuthorizedKeysCommandUser, o->authorized_keys_command_user);
|
|
dump_cfg_string(sAuthorizedPrincipalsCommand, o->authorized_principals_command);
|
|
dump_cfg_string(sAuthorizedPrincipalsCommandUser, o->authorized_principals_command_user);
|
|
dump_cfg_string(sHostKeyAgent, o->host_key_agent);
|
|
dump_cfg_string(sKexAlgorithms,
|
|
o->kex_algorithms ? o->kex_algorithms : KEX_SERVER_KEX);
|
|
dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types ?
|
|
o->hostbased_key_types : KEX_DEFAULT_PK_ALG);
|
|
dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms ?
|
|
o->hostkeyalgorithms : KEX_DEFAULT_PK_ALG);
|
|
dump_cfg_string(sPubkeyAcceptedKeyTypes, o->pubkey_key_types ?
|
|
o->pubkey_key_types : KEX_DEFAULT_PK_ALG);
|
|
|
|
/* string arguments requiring a lookup */
|
|
dump_cfg_string(sLogLevel, log_level_name(o->log_level));
|
|
dump_cfg_string(sLogFacility, log_facility_name(o->log_facility));
|
|
|
|
/* string array arguments */
|
|
dump_cfg_strarray_oneline(sAuthorizedKeysFile, o->num_authkeys_files,
|
|
o->authorized_keys_files);
|
|
dump_cfg_strarray(sHostKeyFile, o->num_host_key_files,
|
|
o->host_key_files);
|
|
dump_cfg_strarray(sHostCertificate, o->num_host_cert_files,
|
|
o->host_cert_files);
|
|
dump_cfg_strarray(sAllowUsers, o->num_allow_users, o->allow_users);
|
|
dump_cfg_strarray(sDenyUsers, o->num_deny_users, o->deny_users);
|
|
dump_cfg_strarray(sAllowGroups, o->num_allow_groups, o->allow_groups);
|
|
dump_cfg_strarray(sDenyGroups, o->num_deny_groups, o->deny_groups);
|
|
dump_cfg_strarray(sAcceptEnv, o->num_accept_env, o->accept_env);
|
|
dump_cfg_strarray_oneline(sAuthenticationMethods,
|
|
o->num_auth_methods, o->auth_methods);
|
|
|
|
/* other arguments */
|
|
for (i = 0; i < o->num_subsystems; i++)
|
|
printf("subsystem %s %s\n", o->subsystem_name[i],
|
|
o->subsystem_args[i]);
|
|
|
|
printf("maxstartups %d:%d:%d\n", o->max_startups_begin,
|
|
o->max_startups_rate, o->max_startups);
|
|
|
|
for (i = 0; tunmode_desc[i].val != -1; i++)
|
|
if (tunmode_desc[i].val == o->permit_tun) {
|
|
s = tunmode_desc[i].text;
|
|
break;
|
|
}
|
|
dump_cfg_string(sPermitTunnel, s);
|
|
|
|
printf("ipqos %s ", iptos2str(o->ip_qos_interactive));
|
|
printf("%s\n", iptos2str(o->ip_qos_bulk));
|
|
|
|
printf("rekeylimit %llu %d\n", (unsigned long long)o->rekey_limit,
|
|
o->rekey_interval);
|
|
|
|
channel_print_adm_permitted_opens();
|
|
}
|