version 1.40, 2000/05/08 17:12:15 |
version 1.40.2.5, 2001/03/21 18:53:00 |
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/* |
/* |
* |
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* servconf.c |
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* |
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* Author: Tatu Ylonen <ylo@cs.hut.fi> |
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* |
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
* All rights reserved |
* All rights reserved |
* |
* |
* Created: Mon Aug 21 15:48:58 1995 ylo |
* 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 |
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* software must be clearly marked as such, and if the derived work is |
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* incompatible with the protocol description in the RFC file, it must be |
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* called by a name other than "ssh" or "Secure Shell". |
*/ |
*/ |
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#include "includes.h" |
#include "includes.h" |
RCSID("$Id$"); |
RCSID("$OpenBSD$"); |
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#ifdef KRB4 |
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#include <krb.h> |
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#endif |
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#ifdef AFS |
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#include <kafs.h> |
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#endif |
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#include "ssh.h" |
#include "ssh.h" |
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#include "log.h" |
#include "servconf.h" |
#include "servconf.h" |
#include "xmalloc.h" |
#include "xmalloc.h" |
#include "compat.h" |
#include "compat.h" |
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#include "pathnames.h" |
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#include "tildexpand.h" |
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#include "misc.h" |
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#include "cipher.h" |
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#include "kex.h" |
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#include "mac.h" |
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/* add listen address */ |
/* add listen address */ |
void add_listen_addr(ServerOptions *options, char *addr); |
void add_listen_addr(ServerOptions *options, char *addr); |
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/* AF_UNSPEC or AF_INET or AF_INET6 */ |
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extern int IPv4or6; |
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/* Initializes the server options to their default values. */ |
/* Initializes the server options to their default values. */ |
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void |
void |
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options->num_ports = 0; |
options->num_ports = 0; |
options->ports_from_cmdline = 0; |
options->ports_from_cmdline = 0; |
options->listen_addrs = NULL; |
options->listen_addrs = NULL; |
options->host_key_file = NULL; |
options->num_host_key_files = 0; |
options->host_dsa_key_file = NULL; |
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options->pid_file = NULL; |
options->pid_file = NULL; |
options->server_key_bits = -1; |
options->server_key_bits = -1; |
options->login_grace_time = -1; |
options->login_grace_time = -1; |
options->key_regeneration_time = -1; |
options->key_regeneration_time = -1; |
options->permit_root_login = -1; |
options->permit_root_login = PERMIT_NOT_SET; |
options->ignore_rhosts = -1; |
options->ignore_rhosts = -1; |
options->ignore_user_known_hosts = -1; |
options->ignore_user_known_hosts = -1; |
options->print_motd = -1; |
options->print_motd = -1; |
options->check_mail = -1; |
options->check_mail = -1; |
options->x11_forwarding = -1; |
options->x11_forwarding = -1; |
options->x11_display_offset = -1; |
options->x11_display_offset = -1; |
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options->xauth_location = NULL; |
options->strict_modes = -1; |
options->strict_modes = -1; |
options->keepalives = -1; |
options->keepalives = -1; |
options->log_facility = (SyslogFacility) - 1; |
options->log_facility = (SyslogFacility) - 1; |
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options->rhosts_authentication = -1; |
options->rhosts_authentication = -1; |
options->rhosts_rsa_authentication = -1; |
options->rhosts_rsa_authentication = -1; |
options->rsa_authentication = -1; |
options->rsa_authentication = -1; |
options->dsa_authentication = -1; |
options->pubkey_authentication = -1; |
#ifdef KRB4 |
#ifdef KRB4 |
options->kerberos_authentication = -1; |
options->kerberos_authentication = -1; |
options->kerberos_or_local_passwd = -1; |
options->kerberos_or_local_passwd = -1; |
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options->afs_token_passing = -1; |
options->afs_token_passing = -1; |
#endif |
#endif |
options->password_authentication = -1; |
options->password_authentication = -1; |
#ifdef SKEY |
options->kbd_interactive_authentication = -1; |
options->skey_authentication = -1; |
options->challenge_reponse_authentication = -1; |
#endif |
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options->permit_empty_passwd = -1; |
options->permit_empty_passwd = -1; |
options->use_login = -1; |
options->use_login = -1; |
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options->allow_tcp_forwarding = -1; |
options->num_allow_users = 0; |
options->num_allow_users = 0; |
options->num_deny_users = 0; |
options->num_deny_users = 0; |
options->num_allow_groups = 0; |
options->num_allow_groups = 0; |
options->num_deny_groups = 0; |
options->num_deny_groups = 0; |
options->ciphers = NULL; |
options->ciphers = NULL; |
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options->macs = NULL; |
options->protocol = SSH_PROTO_UNKNOWN; |
options->protocol = SSH_PROTO_UNKNOWN; |
options->gateway_ports = -1; |
options->gateway_ports = -1; |
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options->num_subsystems = 0; |
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options->max_startups_begin = -1; |
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options->max_startups_rate = -1; |
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options->max_startups = -1; |
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options->banner = NULL; |
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options->reverse_mapping_check = -1; |
} |
} |
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void |
void |
fill_default_server_options(ServerOptions *options) |
fill_default_server_options(ServerOptions *options) |
{ |
{ |
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if (options->protocol == SSH_PROTO_UNKNOWN) |
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options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
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if (options->num_host_key_files == 0) { |
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/* fill default hostkeys for protocols */ |
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if (options->protocol & SSH_PROTO_1) |
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options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
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if (options->protocol & SSH_PROTO_2) |
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options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
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} |
if (options->num_ports == 0) |
if (options->num_ports == 0) |
options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
options->ports[options->num_ports++] = SSH_DEFAULT_PORT; |
if (options->listen_addrs == NULL) |
if (options->listen_addrs == NULL) |
add_listen_addr(options, NULL); |
add_listen_addr(options, NULL); |
if (options->host_key_file == NULL) |
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options->host_key_file = HOST_KEY_FILE; |
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if (options->host_dsa_key_file == NULL) |
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options->host_dsa_key_file = HOST_DSA_KEY_FILE; |
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if (options->pid_file == NULL) |
if (options->pid_file == NULL) |
options->pid_file = SSH_DAEMON_PID_FILE; |
options->pid_file = _PATH_SSH_DAEMON_PID_FILE; |
if (options->server_key_bits == -1) |
if (options->server_key_bits == -1) |
options->server_key_bits = 768; |
options->server_key_bits = 768; |
if (options->login_grace_time == -1) |
if (options->login_grace_time == -1) |
options->login_grace_time = 600; |
options->login_grace_time = 600; |
if (options->key_regeneration_time == -1) |
if (options->key_regeneration_time == -1) |
options->key_regeneration_time = 3600; |
options->key_regeneration_time = 3600; |
if (options->permit_root_login == -1) |
if (options->permit_root_login == PERMIT_NOT_SET) |
options->permit_root_login = 1; /* yes */ |
options->permit_root_login = PERMIT_YES; |
if (options->ignore_rhosts == -1) |
if (options->ignore_rhosts == -1) |
options->ignore_rhosts = 1; |
options->ignore_rhosts = 1; |
if (options->ignore_user_known_hosts == -1) |
if (options->ignore_user_known_hosts == -1) |
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options->x11_forwarding = 0; |
options->x11_forwarding = 0; |
if (options->x11_display_offset == -1) |
if (options->x11_display_offset == -1) |
options->x11_display_offset = 10; |
options->x11_display_offset = 10; |
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#ifdef XAUTH_PATH |
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if (options->xauth_location == NULL) |
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options->xauth_location = XAUTH_PATH; |
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#endif /* XAUTH_PATH */ |
if (options->strict_modes == -1) |
if (options->strict_modes == -1) |
options->strict_modes = 1; |
options->strict_modes = 1; |
if (options->keepalives == -1) |
if (options->keepalives == -1) |
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options->rhosts_rsa_authentication = 0; |
options->rhosts_rsa_authentication = 0; |
if (options->rsa_authentication == -1) |
if (options->rsa_authentication == -1) |
options->rsa_authentication = 1; |
options->rsa_authentication = 1; |
if (options->dsa_authentication == -1) |
if (options->pubkey_authentication == -1) |
options->dsa_authentication = 1; |
options->pubkey_authentication = 1; |
#ifdef KRB4 |
#ifdef KRB4 |
if (options->kerberos_authentication == -1) |
if (options->kerberos_authentication == -1) |
options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); |
options->kerberos_authentication = (access(KEYFILE, R_OK) == 0); |
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#endif /* AFS */ |
#endif /* AFS */ |
if (options->password_authentication == -1) |
if (options->password_authentication == -1) |
options->password_authentication = 1; |
options->password_authentication = 1; |
#ifdef SKEY |
if (options->kbd_interactive_authentication == -1) |
if (options->skey_authentication == -1) |
options->kbd_interactive_authentication = 0; |
options->skey_authentication = 1; |
if (options->challenge_reponse_authentication == -1) |
#endif |
options->challenge_reponse_authentication = 1; |
if (options->permit_empty_passwd == -1) |
if (options->permit_empty_passwd == -1) |
options->permit_empty_passwd = 0; |
options->permit_empty_passwd = 0; |
if (options->use_login == -1) |
if (options->use_login == -1) |
options->use_login = 0; |
options->use_login = 0; |
if (options->protocol == SSH_PROTO_UNKNOWN) |
if (options->allow_tcp_forwarding == -1) |
options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
options->allow_tcp_forwarding = 1; |
if (options->gateway_ports == -1) |
if (options->gateway_ports == -1) |
options->gateway_ports = 0; |
options->gateway_ports = 0; |
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if (options->max_startups == -1) |
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options->max_startups = 10; |
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if (options->max_startups_rate == -1) |
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options->max_startups_rate = 100; /* 100% */ |
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if (options->max_startups_begin == -1) |
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options->max_startups_begin = options->max_startups; |
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if (options->reverse_mapping_check == -1) |
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options->reverse_mapping_check = 0; |
} |
} |
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#define WHITESPACE " \t\r\n" |
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/* Keyword tokens. */ |
/* Keyword tokens. */ |
typedef enum { |
typedef enum { |
sBadOption, /* == unknown option */ |
sBadOption, /* == unknown option */ |
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#ifdef AFS |
#ifdef AFS |
sKerberosTgtPassing, sAFSTokenPassing, |
sKerberosTgtPassing, sAFSTokenPassing, |
#endif |
#endif |
#ifdef SKEY |
sChallengeResponseAuthentication, |
sSkeyAuthentication, |
sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
#endif |
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sPasswordAuthentication, sListenAddress, |
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sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset, |
sPrintMotd, sIgnoreRhosts, sX11Forwarding, sX11DisplayOffset, |
sStrictModes, sEmptyPasswd, sRandomSeedFile, sKeepAlives, sCheckMail, |
sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
sUseLogin, sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
sUseLogin, sAllowTcpForwarding, |
sIgnoreUserKnownHosts, sHostDSAKeyFile, sCiphers, sProtocol, sPidFile, |
sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
sGatewayPorts, sDSAAuthentication |
sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
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sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
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sBanner, sReverseMappingCheck |
} ServerOpCodes; |
} ServerOpCodes; |
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/* Textual representation of the tokens. */ |
/* Textual representation of the tokens. */ |
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} keywords[] = { |
} keywords[] = { |
{ "port", sPort }, |
{ "port", sPort }, |
{ "hostkey", sHostKeyFile }, |
{ "hostkey", sHostKeyFile }, |
{ "hostdsakey", sHostDSAKeyFile }, |
{ "hostdsakey", sHostKeyFile }, /* alias */ |
{ "pidfile", sPidFile }, |
{ "pidfile", sPidFile }, |
{ "serverkeybits", sServerKeyBits }, |
{ "serverkeybits", sServerKeyBits }, |
{ "logingracetime", sLoginGraceTime }, |
{ "logingracetime", sLoginGraceTime }, |
{ "keyregenerationinterval", sKeyRegenerationTime }, |
{ "keyregenerationinterval", sKeyRegenerationTime }, |
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{ "rhostsauthentication", sRhostsAuthentication }, |
{ "rhostsauthentication", sRhostsAuthentication }, |
{ "rhostsrsaauthentication", sRhostsRSAAuthentication }, |
{ "rhostsrsaauthentication", sRhostsRSAAuthentication }, |
{ "rsaauthentication", sRSAAuthentication }, |
{ "rsaauthentication", sRSAAuthentication }, |
{ "dsaauthentication", sDSAAuthentication }, |
{ "pubkeyauthentication", sPubkeyAuthentication }, |
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{ "dsaauthentication", sPubkeyAuthentication }, /* alias */ |
#ifdef KRB4 |
#ifdef KRB4 |
{ "kerberosauthentication", sKerberosAuthentication }, |
{ "kerberosauthentication", sKerberosAuthentication }, |
{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, |
{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, |
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{ "afstokenpassing", sAFSTokenPassing }, |
{ "afstokenpassing", sAFSTokenPassing }, |
#endif |
#endif |
{ "passwordauthentication", sPasswordAuthentication }, |
{ "passwordauthentication", sPasswordAuthentication }, |
#ifdef SKEY |
{ "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
{ "skeyauthentication", sSkeyAuthentication }, |
{ "challengeresponseauthentication", sChallengeResponseAuthentication }, |
#endif |
{ "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ |
{ "checkmail", sCheckMail }, |
{ "checkmail", sCheckMail }, |
{ "listenaddress", sListenAddress }, |
{ "listenaddress", sListenAddress }, |
{ "printmotd", sPrintMotd }, |
{ "printmotd", sPrintMotd }, |
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{ "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
{ "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
{ "x11forwarding", sX11Forwarding }, |
{ "x11forwarding", sX11Forwarding }, |
{ "x11displayoffset", sX11DisplayOffset }, |
{ "x11displayoffset", sX11DisplayOffset }, |
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{ "xauthlocation", sXAuthLocation }, |
{ "strictmodes", sStrictModes }, |
{ "strictmodes", sStrictModes }, |
{ "permitemptypasswords", sEmptyPasswd }, |
{ "permitemptypasswords", sEmptyPasswd }, |
{ "uselogin", sUseLogin }, |
{ "uselogin", sUseLogin }, |
{ "randomseed", sRandomSeedFile }, |
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{ "keepalive", sKeepAlives }, |
{ "keepalive", sKeepAlives }, |
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{ "allowtcpforwarding", sAllowTcpForwarding }, |
{ "allowusers", sAllowUsers }, |
{ "allowusers", sAllowUsers }, |
{ "denyusers", sDenyUsers }, |
{ "denyusers", sDenyUsers }, |
{ "allowgroups", sAllowGroups }, |
{ "allowgroups", sAllowGroups }, |
{ "denygroups", sDenyGroups }, |
{ "denygroups", sDenyGroups }, |
{ "ciphers", sCiphers }, |
{ "ciphers", sCiphers }, |
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{ "macs", sMacs }, |
{ "protocol", sProtocol }, |
{ "protocol", sProtocol }, |
{ "gatewayports", sGatewayPorts }, |
{ "gatewayports", sGatewayPorts }, |
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{ "subsystem", sSubsystem }, |
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{ "maxstartups", sMaxStartups }, |
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{ "banner", sBanner }, |
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{ "reversemappingcheck", sReverseMappingCheck }, |
{ NULL, 0 } |
{ NULL, 0 } |
}; |
}; |
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parse_token(const char *cp, const char *filename, |
parse_token(const char *cp, const char *filename, |
int linenum) |
int linenum) |
{ |
{ |
unsigned int i; |
u_int i; |
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for (i = 0; keywords[i].name; i++) |
for (i = 0; keywords[i].name; i++) |
if (strcasecmp(cp, keywords[i].name) == 0) |
if (strcasecmp(cp, keywords[i].name) == 0) |
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void |
void |
add_listen_addr(ServerOptions *options, char *addr) |
add_listen_addr(ServerOptions *options, char *addr) |
{ |
{ |
extern int IPv4or6; |
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struct addrinfo hints, *ai, *aitop; |
struct addrinfo hints, *ai, *aitop; |
char strport[NI_MAXSERV]; |
char strport[NI_MAXSERV]; |
int gaierr; |
int gaierr; |
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hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; |
hints.ai_flags = (addr == NULL) ? AI_PASSIVE : 0; |
snprintf(strport, sizeof strport, "%d", options->ports[i]); |
snprintf(strport, sizeof strport, "%d", options->ports[i]); |
if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) |
if ((gaierr = getaddrinfo(addr, strport, &hints, &aitop)) != 0) |
fatal("bad addr or host: %s (%s)\n", |
fatal("bad addr or host: %s (%s)", |
addr ? addr : "<NULL>", |
addr ? addr : "<NULL>", |
gai_strerror(gaierr)); |
gai_strerror(gaierr)); |
for (ai = aitop; ai->ai_next; ai = ai->ai_next) |
for (ai = aitop; ai->ai_next; ai = ai->ai_next) |
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{ |
{ |
FILE *f; |
FILE *f; |
char line[1024]; |
char line[1024]; |
char *cp, **charptr; |
char *cp, **charptr, *arg; |
int linenum, *intptr, value; |
int linenum, *intptr, value; |
int bad_options = 0; |
int bad_options = 0; |
ServerOpCodes opcode; |
ServerOpCodes opcode; |
|
int i; |
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f = fopen(filename, "r"); |
f = fopen(filename, "r"); |
if (!f) { |
if (!f) { |
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linenum = 0; |
linenum = 0; |
while (fgets(line, sizeof(line), f)) { |
while (fgets(line, sizeof(line), f)) { |
linenum++; |
linenum++; |
cp = line + strspn(line, WHITESPACE); |
cp = line; |
if (!*cp || *cp == '#') |
arg = strdelim(&cp); |
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/* Ignore leading whitespace */ |
|
if (*arg == '\0') |
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arg = strdelim(&cp); |
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if (!arg || !*arg || *arg == '#') |
continue; |
continue; |
cp = strtok(cp, WHITESPACE); |
intptr = NULL; |
opcode = parse_token(cp, filename, linenum); |
charptr = NULL; |
|
opcode = parse_token(arg, filename, linenum); |
switch (opcode) { |
switch (opcode) { |
case sBadOption: |
case sBadOption: |
bad_options++; |
bad_options++; |
|
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fatal("%s line %d: ports must be specified before " |
fatal("%s line %d: ports must be specified before " |
"ListenAdress.\n", filename, linenum); |
"ListenAdress.\n", filename, linenum); |
if (options->num_ports >= MAX_PORTS) |
if (options->num_ports >= MAX_PORTS) |
fatal("%s line %d: too many ports.\n", |
fatal("%s line %d: too many ports.", |
filename, linenum); |
filename, linenum); |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) |
if (!arg || *arg == '\0') |
fatal("%s line %d: missing port number.\n", |
fatal("%s line %d: missing port number.", |
filename, linenum); |
filename, linenum); |
options->ports[options->num_ports++] = atoi(cp); |
options->ports[options->num_ports++] = atoi(arg); |
break; |
break; |
|
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case sServerKeyBits: |
case sServerKeyBits: |
intptr = &options->server_key_bits; |
intptr = &options->server_key_bits; |
parse_int: |
parse_int: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) { |
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing integer value.\n", |
fprintf(stderr, "%s line %d: missing integer value.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
value = atoi(cp); |
value = atoi(arg); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = value; |
*intptr = value; |
break; |
break; |
|
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goto parse_int; |
goto parse_int; |
|
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case sListenAddress: |
case sListenAddress: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) |
if (!arg || *arg == '\0') |
fatal("%s line %d: missing inet addr.\n", |
fatal("%s line %d: missing inet addr.", |
filename, linenum); |
filename, linenum); |
add_listen_addr(options, cp); |
add_listen_addr(options, arg); |
break; |
break; |
|
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case sHostKeyFile: |
case sHostKeyFile: |
case sHostDSAKeyFile: |
intptr = &options->num_host_key_files; |
charptr = (opcode == sHostKeyFile ) ? |
if (*intptr >= MAX_HOSTKEYS) { |
&options->host_key_file : &options->host_dsa_key_file; |
fprintf(stderr, |
cp = strtok(NULL, WHITESPACE); |
"%s line %d: too many host keys specified (max %d).\n", |
if (!cp) { |
filename, linenum, MAX_HOSTKEYS); |
|
exit(1); |
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} |
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charptr = &options->host_key_files[*intptr]; |
|
parse_filename: |
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arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing file name.\n", |
fprintf(stderr, "%s line %d: missing file name.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
if (*charptr == NULL) |
if (*charptr == NULL) { |
*charptr = tilde_expand_filename(cp, getuid()); |
*charptr = tilde_expand_filename(arg, getuid()); |
|
/* increase optional counter */ |
|
if (intptr != NULL) |
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*intptr = *intptr + 1; |
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} |
break; |
break; |
|
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case sPidFile: |
case sPidFile: |
charptr = &options->pid_file; |
charptr = &options->pid_file; |
cp = strtok(NULL, WHITESPACE); |
goto parse_filename; |
if (!cp) { |
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fprintf(stderr, "%s line %d: missing file name.\n", |
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filename, linenum); |
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exit(1); |
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} |
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if (*charptr == NULL) |
|
*charptr = tilde_expand_filename(cp, getuid()); |
|
break; |
|
|
|
case sRandomSeedFile: |
|
fprintf(stderr, "%s line %d: \"randomseed\" option is obsolete.\n", |
|
filename, linenum); |
|
cp = strtok(NULL, WHITESPACE); |
|
break; |
|
|
|
case sPermitRootLogin: |
case sPermitRootLogin: |
intptr = &options->permit_root_login; |
intptr = &options->permit_root_login; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) { |
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing yes/without-password/no argument.\n", |
fprintf(stderr, "%s line %d: missing yes/" |
filename, linenum); |
"without-password/forced-commands-only/no " |
|
"argument.\n", filename, linenum); |
exit(1); |
exit(1); |
} |
} |
if (strcmp(cp, "without-password") == 0) |
if (strcmp(arg, "without-password") == 0) |
value = 2; |
value = PERMIT_NO_PASSWD; |
else if (strcmp(cp, "yes") == 0) |
else if (strcmp(arg, "forced-commands-only") == 0) |
value = 1; |
value = PERMIT_FORCED_ONLY; |
else if (strcmp(cp, "no") == 0) |
else if (strcmp(arg, "yes") == 0) |
value = 0; |
value = PERMIT_YES; |
|
else if (strcmp(arg, "no") == 0) |
|
value = PERMIT_NO; |
else { |
else { |
fprintf(stderr, "%s line %d: Bad yes/without-password/no argument: %s\n", |
fprintf(stderr, "%s line %d: Bad yes/" |
filename, linenum, cp); |
"without-password/forced-commands-only/no " |
|
"argument: %s\n", filename, linenum, arg); |
exit(1); |
exit(1); |
} |
} |
if (*intptr == -1) |
if (*intptr == -1) |
|
|
case sIgnoreRhosts: |
case sIgnoreRhosts: |
intptr = &options->ignore_rhosts; |
intptr = &options->ignore_rhosts; |
parse_flag: |
parse_flag: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!cp) { |
if (!arg || *arg == '\0') { |
fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
fprintf(stderr, "%s line %d: missing yes/no argument.\n", |
filename, linenum); |
filename, linenum); |
exit(1); |
exit(1); |
} |
} |
if (strcmp(cp, "yes") == 0) |
if (strcmp(arg, "yes") == 0) |
value = 1; |
value = 1; |
else if (strcmp(cp, "no") == 0) |
else if (strcmp(arg, "no") == 0) |
value = 0; |
value = 0; |
else { |
else { |
fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", |
fprintf(stderr, "%s line %d: Bad yes/no argument: %s\n", |
filename, linenum, cp); |
filename, linenum, arg); |
exit(1); |
exit(1); |
} |
} |
if (*intptr == -1) |
if (*intptr == -1) |
|
|
intptr = &options->rsa_authentication; |
intptr = &options->rsa_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sDSAAuthentication: |
case sPubkeyAuthentication: |
intptr = &options->dsa_authentication; |
intptr = &options->pubkey_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
#ifdef KRB4 |
#ifdef KRB4 |
|
|
intptr = &options->password_authentication; |
intptr = &options->password_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
|
case sKbdInteractiveAuthentication: |
|
intptr = &options->kbd_interactive_authentication; |
|
goto parse_flag; |
|
|
case sCheckMail: |
case sCheckMail: |
intptr = &options->check_mail; |
intptr = &options->check_mail; |
goto parse_flag; |
goto parse_flag; |
|
|
#ifdef SKEY |
case sChallengeResponseAuthentication: |
case sSkeyAuthentication: |
intptr = &options->challenge_reponse_authentication; |
intptr = &options->skey_authentication; |
|
goto parse_flag; |
goto parse_flag; |
#endif |
|
|
|
case sPrintMotd: |
case sPrintMotd: |
intptr = &options->print_motd; |
intptr = &options->print_motd; |
|
|
intptr = &options->x11_display_offset; |
intptr = &options->x11_display_offset; |
goto parse_int; |
goto parse_int; |
|
|
|
case sXAuthLocation: |
|
charptr = &options->xauth_location; |
|
goto parse_filename; |
|
|
case sStrictModes: |
case sStrictModes: |
intptr = &options->strict_modes; |
intptr = &options->strict_modes; |
goto parse_flag; |
goto parse_flag; |
|
|
intptr = &options->gateway_ports; |
intptr = &options->gateway_ports; |
goto parse_flag; |
goto parse_flag; |
|
|
|
case sReverseMappingCheck: |
|
intptr = &options->reverse_mapping_check; |
|
goto parse_flag; |
|
|
case sLogFacility: |
case sLogFacility: |
intptr = (int *) &options->log_facility; |
intptr = (int *) &options->log_facility; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
value = log_facility_number(cp); |
value = log_facility_number(arg); |
if (value == (SyslogFacility) - 1) |
if (value == (SyslogFacility) - 1) |
fatal("%.200s line %d: unsupported log facility '%s'\n", |
fatal("%.200s line %d: unsupported log facility '%s'", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = (SyslogFacility) value; |
*intptr = (SyslogFacility) value; |
break; |
break; |
|
|
case sLogLevel: |
case sLogLevel: |
intptr = (int *) &options->log_level; |
intptr = (int *) &options->log_level; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
value = log_level_number(cp); |
value = log_level_number(arg); |
if (value == (LogLevel) - 1) |
if (value == (LogLevel) - 1) |
fatal("%.200s line %d: unsupported log level '%s'\n", |
fatal("%.200s line %d: unsupported log level '%s'", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = (LogLevel) value; |
*intptr = (LogLevel) value; |
break; |
break; |
|
|
|
case sAllowTcpForwarding: |
|
intptr = &options->allow_tcp_forwarding; |
|
goto parse_flag; |
|
|
case sAllowUsers: |
case sAllowUsers: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_allow_users >= MAX_ALLOW_USERS) |
if (options->num_allow_users >= MAX_ALLOW_USERS) |
fatal("%s line %d: too many allow users.\n", |
fatal("%s line %d: too many allow users.", |
filename, linenum); |
filename, linenum); |
options->allow_users[options->num_allow_users++] = xstrdup(cp); |
options->allow_users[options->num_allow_users++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sDenyUsers: |
case sDenyUsers: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_deny_users >= MAX_DENY_USERS) |
if (options->num_deny_users >= MAX_DENY_USERS) |
fatal( "%s line %d: too many deny users.\n", |
fatal( "%s line %d: too many deny users.", |
filename, linenum); |
filename, linenum); |
options->deny_users[options->num_deny_users++] = xstrdup(cp); |
options->deny_users[options->num_deny_users++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sAllowGroups: |
case sAllowGroups: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
if (options->num_allow_groups >= MAX_ALLOW_GROUPS) |
fatal("%s line %d: too many allow groups.\n", |
fatal("%s line %d: too many allow groups.", |
filename, linenum); |
filename, linenum); |
options->allow_groups[options->num_allow_groups++] = xstrdup(cp); |
options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sDenyGroups: |
case sDenyGroups: |
while ((cp = strtok(NULL, WHITESPACE))) { |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
if (options->num_deny_groups >= MAX_DENY_GROUPS) |
if (options->num_deny_groups >= MAX_DENY_GROUPS) |
fatal("%s line %d: too many deny groups.\n", |
fatal("%s line %d: too many deny groups.", |
filename, linenum); |
filename, linenum); |
options->deny_groups[options->num_deny_groups++] = xstrdup(cp); |
options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sCiphers: |
case sCiphers: |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
if (!ciphers_valid(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'.", |
fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (options->ciphers == NULL) |
if (options->ciphers == NULL) |
options->ciphers = xstrdup(cp); |
options->ciphers = xstrdup(arg); |
break; |
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: |
case sProtocol: |
intptr = &options->protocol; |
intptr = &options->protocol; |
cp = strtok(NULL, WHITESPACE); |
arg = strdelim(&cp); |
value = proto_spec(cp); |
if (!arg || *arg == '\0') |
|
fatal("%s line %d: Missing argument.", filename, linenum); |
|
value = proto_spec(arg); |
if (value == SSH_PROTO_UNKNOWN) |
if (value == SSH_PROTO_UNKNOWN) |
fatal("%s line %d: Bad protocol spec '%s'.", |
fatal("%s line %d: Bad protocol spec '%s'.", |
filename, linenum, cp ? cp : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == SSH_PROTO_UNKNOWN) |
if (*intptr == SSH_PROTO_UNKNOWN) |
*intptr = value; |
*intptr = value; |
break; |
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 (sscanf(arg, "%d:%d:%d", |
|
&options->max_startups_begin, |
|
&options->max_startups_rate, |
|
&options->max_startups) == 3) { |
|
if (options->max_startups_begin > |
|
options->max_startups || |
|
options->max_startups_rate > 100 || |
|
options->max_startups_rate < 1) |
|
fatal("%s line %d: Illegal MaxStartups spec.", |
|
filename, linenum); |
|
break; |
|
} |
|
intptr = &options->max_startups; |
|
goto parse_int; |
|
|
|
case sBanner: |
|
charptr = &options->banner; |
|
goto parse_filename; |
|
|
default: |
default: |
fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", |
fprintf(stderr, "%s line %d: Missing handler for opcode %s (%d)\n", |
filename, linenum, cp, opcode); |
filename, linenum, arg, opcode); |
exit(1); |
exit(1); |
} |
} |
if (strtok(NULL, WHITESPACE) != NULL) { |
if ((arg = strdelim(&cp)) != NULL && *arg != '\0') { |
fprintf(stderr, "%s line %d: garbage at end of line.\n", |
fprintf(stderr, |
filename, linenum); |
"%s line %d: garbage at end of line; \"%.200s\".\n", |
|
filename, linenum, arg); |
exit(1); |
exit(1); |
} |
} |
} |
} |