version 1.78, 2001/04/15 21:28:35 |
version 1.78.2.3, 2002/03/09 00:20:44 |
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#include "includes.h" |
#include "includes.h" |
RCSID("$OpenBSD$"); |
RCSID("$OpenBSD$"); |
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#ifdef KRB4 |
#if defined(KRB4) || defined(KRB5) |
#include <krb.h> |
#include <krb.h> |
#endif |
#endif |
#ifdef AFS |
#ifdef AFS |
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#include "kex.h" |
#include "kex.h" |
#include "mac.h" |
#include "mac.h" |
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void add_listen_addr(ServerOptions *options, char *addr, u_short port); |
static void add_listen_addr(ServerOptions *, char *, u_short); |
void add_one_listen_addr(ServerOptions *options, char *addr, u_short port); |
static void add_one_listen_addr(ServerOptions *, char *, u_short); |
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/* AF_UNSPEC or AF_INET or AF_INET6 */ |
/* AF_UNSPEC or AF_INET or AF_INET6 */ |
extern int IPv4or6; |
extern int IPv4or6; |
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options->ignore_user_known_hosts = -1; |
options->ignore_user_known_hosts = -1; |
options->print_motd = -1; |
options->print_motd = -1; |
options->print_lastlog = -1; |
options->print_lastlog = -1; |
options->check_mail = -1; |
|
options->x11_forwarding = -1; |
options->x11_forwarding = -1; |
options->x11_display_offset = -1; |
options->x11_display_offset = -1; |
|
options->x11_use_localhost = -1; |
options->xauth_location = NULL; |
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 = SYSLOG_FACILITY_NOT_SET; |
options->log_level = (LogLevel) - 1; |
options->log_level = SYSLOG_LEVEL_NOT_SET; |
options->rhosts_authentication = -1; |
options->rhosts_authentication = -1; |
options->rhosts_rsa_authentication = -1; |
options->rhosts_rsa_authentication = -1; |
options->hostbased_authentication = -1; |
options->hostbased_authentication = -1; |
options->hostbased_uses_name_from_packet_only = -1; |
options->hostbased_uses_name_from_packet_only = -1; |
options->rsa_authentication = -1; |
options->rsa_authentication = -1; |
options->pubkey_authentication = -1; |
options->pubkey_authentication = -1; |
#ifdef KRB4 |
#if defined(KRB4) || defined(KRB5) |
options->kerberos_authentication = -1; |
options->kerberos_authentication = -1; |
options->kerberos_or_local_passwd = -1; |
options->kerberos_or_local_passwd = -1; |
options->kerberos_ticket_cleanup = -1; |
options->kerberos_ticket_cleanup = -1; |
#endif |
#endif |
#ifdef AFS |
#if defined(AFS) || defined(KRB5) |
options->kerberos_tgt_passing = -1; |
options->kerberos_tgt_passing = -1; |
|
#endif |
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#ifdef AFS |
options->afs_token_passing = -1; |
options->afs_token_passing = -1; |
#endif |
#endif |
options->password_authentication = -1; |
options->password_authentication = -1; |
options->kbd_interactive_authentication = -1; |
options->kbd_interactive_authentication = -1; |
options->challenge_reponse_authentication = -1; |
options->challenge_response_authentication = -1; |
options->permit_empty_passwd = -1; |
options->permit_empty_passwd = -1; |
options->use_login = -1; |
options->use_login = -1; |
options->allow_tcp_forwarding = -1; |
options->allow_tcp_forwarding = -1; |
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options->max_startups_rate = -1; |
options->max_startups_rate = -1; |
options->max_startups = -1; |
options->max_startups = -1; |
options->banner = NULL; |
options->banner = NULL; |
options->reverse_mapping_check = -1; |
options->verify_reverse_mapping = -1; |
options->client_alive_interval = -1; |
options->client_alive_interval = -1; |
options->client_alive_count_max = -1; |
options->client_alive_count_max = -1; |
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options->authorized_keys_file = NULL; |
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options->authorized_keys_file2 = NULL; |
} |
} |
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void |
void |
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if (options->num_host_key_files == 0) { |
if (options->num_host_key_files == 0) { |
/* fill default hostkeys for protocols */ |
/* fill default hostkeys for protocols */ |
if (options->protocol & SSH_PROTO_1) |
if (options->protocol & SSH_PROTO_1) |
options->host_key_files[options->num_host_key_files++] = _PATH_HOST_KEY_FILE; |
options->host_key_files[options->num_host_key_files++] = |
if (options->protocol & SSH_PROTO_2) |
_PATH_HOST_KEY_FILE; |
options->host_key_files[options->num_host_key_files++] = _PATH_HOST_DSA_KEY_FILE; |
if (options->protocol & SSH_PROTO_2) { |
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options->host_key_files[options->num_host_key_files++] = |
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_PATH_HOST_RSA_KEY_FILE; |
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options->host_key_files[options->num_host_key_files++] = |
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_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; |
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options->ignore_rhosts = 1; |
options->ignore_rhosts = 1; |
if (options->ignore_user_known_hosts == -1) |
if (options->ignore_user_known_hosts == -1) |
options->ignore_user_known_hosts = 0; |
options->ignore_user_known_hosts = 0; |
if (options->check_mail == -1) |
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options->check_mail = 0; |
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if (options->print_motd == -1) |
if (options->print_motd == -1) |
options->print_motd = 1; |
options->print_motd = 1; |
if (options->print_lastlog == -1) |
if (options->print_lastlog == -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; |
#ifdef XAUTH_PATH |
if (options->x11_use_localhost == -1) |
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options->x11_use_localhost = 1; |
if (options->xauth_location == NULL) |
if (options->xauth_location == NULL) |
options->xauth_location = XAUTH_PATH; |
options->xauth_location = _PATH_XAUTH; |
#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) |
options->keepalives = 1; |
options->keepalives = 1; |
if (options->log_facility == (SyslogFacility) (-1)) |
if (options->log_facility == SYSLOG_FACILITY_NOT_SET) |
options->log_facility = SYSLOG_FACILITY_AUTH; |
options->log_facility = SYSLOG_FACILITY_AUTH; |
if (options->log_level == (LogLevel) (-1)) |
if (options->log_level == SYSLOG_LEVEL_NOT_SET) |
options->log_level = SYSLOG_LEVEL_INFO; |
options->log_level = SYSLOG_LEVEL_INFO; |
if (options->rhosts_authentication == -1) |
if (options->rhosts_authentication == -1) |
options->rhosts_authentication = 0; |
options->rhosts_authentication = 0; |
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options->rsa_authentication = 1; |
options->rsa_authentication = 1; |
if (options->pubkey_authentication == -1) |
if (options->pubkey_authentication == -1) |
options->pubkey_authentication = 1; |
options->pubkey_authentication = 1; |
#ifdef KRB4 |
#if defined(KRB4) || defined(KRB5) |
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); |
if (options->kerberos_or_local_passwd == -1) |
if (options->kerberos_or_local_passwd == -1) |
options->kerberos_or_local_passwd = 1; |
options->kerberos_or_local_passwd = 1; |
if (options->kerberos_ticket_cleanup == -1) |
if (options->kerberos_ticket_cleanup == -1) |
options->kerberos_ticket_cleanup = 1; |
options->kerberos_ticket_cleanup = 1; |
#endif /* KRB4 */ |
#endif |
#ifdef AFS |
#if defined(AFS) || defined(KRB5) |
if (options->kerberos_tgt_passing == -1) |
if (options->kerberos_tgt_passing == -1) |
options->kerberos_tgt_passing = 0; |
options->kerberos_tgt_passing = 0; |
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#endif |
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#ifdef AFS |
if (options->afs_token_passing == -1) |
if (options->afs_token_passing == -1) |
options->afs_token_passing = k_hasafs(); |
options->afs_token_passing = k_hasafs(); |
#endif /* AFS */ |
#endif |
if (options->password_authentication == -1) |
if (options->password_authentication == -1) |
options->password_authentication = 1; |
options->password_authentication = 1; |
if (options->kbd_interactive_authentication == -1) |
if (options->kbd_interactive_authentication == -1) |
options->kbd_interactive_authentication = 0; |
options->kbd_interactive_authentication = 0; |
if (options->challenge_reponse_authentication == -1) |
if (options->challenge_response_authentication == -1) |
options->challenge_reponse_authentication = 1; |
options->challenge_response_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) |
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options->max_startups_rate = 100; /* 100% */ |
options->max_startups_rate = 100; /* 100% */ |
if (options->max_startups_begin == -1) |
if (options->max_startups_begin == -1) |
options->max_startups_begin = options->max_startups; |
options->max_startups_begin = options->max_startups; |
if (options->reverse_mapping_check == -1) |
if (options->verify_reverse_mapping == -1) |
options->reverse_mapping_check = 0; |
options->verify_reverse_mapping = 0; |
if (options->client_alive_interval == -1) |
if (options->client_alive_interval == -1) |
options->client_alive_interval = 0; |
options->client_alive_interval = 0; |
if (options->client_alive_count_max == -1) |
if (options->client_alive_count_max == -1) |
options->client_alive_count_max = 3; |
options->client_alive_count_max = 3; |
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if (options->authorized_keys_file2 == NULL) { |
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/* authorized_keys_file2 falls back to authorized_keys_file */ |
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if (options->authorized_keys_file != NULL) |
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options->authorized_keys_file2 = options->authorized_keys_file; |
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else |
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options->authorized_keys_file2 = _PATH_SSH_USER_PERMITTED_KEYS2; |
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} |
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if (options->authorized_keys_file == NULL) |
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options->authorized_keys_file = _PATH_SSH_USER_PERMITTED_KEYS; |
} |
} |
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/* Keyword tokens. */ |
/* Keyword tokens. */ |
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sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, |
sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime, |
sPermitRootLogin, sLogFacility, sLogLevel, |
sPermitRootLogin, sLogFacility, sLogLevel, |
sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, |
sRhostsAuthentication, sRhostsRSAAuthentication, sRSAAuthentication, |
#ifdef KRB4 |
#if defined(KRB4) || defined(KRB5) |
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup, |
#endif |
#endif |
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#if defined(AFS) || defined(KRB5) |
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sKerberosTgtPassing, |
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#endif |
#ifdef AFS |
#ifdef AFS |
sKerberosTgtPassing, sAFSTokenPassing, |
sAFSTokenPassing, |
#endif |
#endif |
sChallengeResponseAuthentication, |
sChallengeResponseAuthentication, |
sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
sPasswordAuthentication, sKbdInteractiveAuthentication, sListenAddress, |
sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
sPrintMotd, sPrintLastLog, sIgnoreRhosts, |
sX11Forwarding, sX11DisplayOffset, |
sX11Forwarding, sX11DisplayOffset, sX11UseLocalhost, |
sStrictModes, sEmptyPasswd, sKeepAlives, sCheckMail, |
sStrictModes, sEmptyPasswd, sKeepAlives, |
sUseLogin, sAllowTcpForwarding, |
sUseLogin, sAllowTcpForwarding, |
sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
sAllowUsers, sDenyUsers, sAllowGroups, sDenyGroups, |
sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
sIgnoreUserKnownHosts, sCiphers, sMacs, sProtocol, sPidFile, |
sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
sGatewayPorts, sPubkeyAuthentication, sXAuthLocation, sSubsystem, sMaxStartups, |
sBanner, sReverseMappingCheck, sHostbasedAuthentication, |
sBanner, sVerifyReverseMapping, sHostbasedAuthentication, |
sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
sHostbasedUsesNameFromPacketOnly, sClientAliveInterval, |
sClientAliveCountMax |
sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2, |
|
sDeprecated |
} ServerOpCodes; |
} ServerOpCodes; |
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/* Textual representation of the tokens. */ |
/* Textual representation of the tokens. */ |
|
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{ "rsaauthentication", sRSAAuthentication }, |
{ "rsaauthentication", sRSAAuthentication }, |
{ "pubkeyauthentication", sPubkeyAuthentication }, |
{ "pubkeyauthentication", sPubkeyAuthentication }, |
{ "dsaauthentication", sPubkeyAuthentication }, /* alias */ |
{ "dsaauthentication", sPubkeyAuthentication }, /* alias */ |
#ifdef KRB4 |
#if defined(KRB4) || defined(KRB5) |
{ "kerberosauthentication", sKerberosAuthentication }, |
{ "kerberosauthentication", sKerberosAuthentication }, |
{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, |
{ "kerberosorlocalpasswd", sKerberosOrLocalPasswd }, |
{ "kerberosticketcleanup", sKerberosTicketCleanup }, |
{ "kerberosticketcleanup", sKerberosTicketCleanup }, |
#endif |
#endif |
#ifdef AFS |
#if defined(AFS) || defined(KRB5) |
{ "kerberostgtpassing", sKerberosTgtPassing }, |
{ "kerberostgtpassing", sKerberosTgtPassing }, |
|
#endif |
|
#ifdef AFS |
{ "afstokenpassing", sAFSTokenPassing }, |
{ "afstokenpassing", sAFSTokenPassing }, |
#endif |
#endif |
{ "passwordauthentication", sPasswordAuthentication }, |
{ "passwordauthentication", sPasswordAuthentication }, |
{ "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
{ "kbdinteractiveauthentication", sKbdInteractiveAuthentication }, |
{ "challengeresponseauthentication", sChallengeResponseAuthentication }, |
{ "challengeresponseauthentication", sChallengeResponseAuthentication }, |
{ "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ |
{ "skeyauthentication", sChallengeResponseAuthentication }, /* alias */ |
{ "checkmail", sCheckMail }, |
{ "checkmail", sDeprecated }, |
{ "listenaddress", sListenAddress }, |
{ "listenaddress", sListenAddress }, |
{ "printmotd", sPrintMotd }, |
{ "printmotd", sPrintMotd }, |
{ "printlastlog", sPrintLastLog }, |
{ "printlastlog", sPrintLastLog }, |
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{ "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
{ "ignoreuserknownhosts", sIgnoreUserKnownHosts }, |
{ "x11forwarding", sX11Forwarding }, |
{ "x11forwarding", sX11Forwarding }, |
{ "x11displayoffset", sX11DisplayOffset }, |
{ "x11displayoffset", sX11DisplayOffset }, |
|
{ "x11uselocalhost", sX11UseLocalhost }, |
{ "xauthlocation", sXAuthLocation }, |
{ "xauthlocation", sXAuthLocation }, |
{ "strictmodes", sStrictModes }, |
{ "strictmodes", sStrictModes }, |
{ "permitemptypasswords", sEmptyPasswd }, |
{ "permitemptypasswords", sEmptyPasswd }, |
|
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{ "subsystem", sSubsystem }, |
{ "subsystem", sSubsystem }, |
{ "maxstartups", sMaxStartups }, |
{ "maxstartups", sMaxStartups }, |
{ "banner", sBanner }, |
{ "banner", sBanner }, |
{ "reversemappingcheck", sReverseMappingCheck }, |
{ "verifyreversemapping", sVerifyReverseMapping }, |
|
{ "reversemappingcheck", sVerifyReverseMapping }, |
{ "clientaliveinterval", sClientAliveInterval }, |
{ "clientaliveinterval", sClientAliveInterval }, |
{ "clientalivecountmax", sClientAliveCountMax }, |
{ "clientalivecountmax", sClientAliveCountMax }, |
{ NULL, 0 } |
{ "authorizedkeysfile", sAuthorizedKeysFile }, |
|
{ "authorizedkeysfile2", sAuthorizedKeysFile2 }, |
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{ NULL, sBadOption } |
}; |
}; |
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/* |
/* |
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return sBadOption; |
return sBadOption; |
} |
} |
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void |
static void |
add_listen_addr(ServerOptions *options, char *addr, u_short port) |
add_listen_addr(ServerOptions *options, char *addr, u_short port) |
{ |
{ |
int i; |
int i; |
|
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add_one_listen_addr(options, addr, port); |
add_one_listen_addr(options, addr, port); |
} |
} |
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void |
static void |
add_one_listen_addr(ServerOptions *options, char *addr, u_short port) |
add_one_listen_addr(ServerOptions *options, char *addr, u_short port) |
{ |
{ |
struct addrinfo hints, *ai, *aitop; |
struct addrinfo hints, *ai, *aitop; |
|
|
options->listen_addrs = aitop; |
options->listen_addrs = aitop; |
} |
} |
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/* Reads the server configuration file. */ |
int |
|
process_server_config_line(ServerOptions *options, char *line, |
void |
const char *filename, int linenum) |
read_server_config(ServerOptions *options, const char *filename) |
|
{ |
{ |
FILE *f; |
|
char line[1024]; |
|
char *cp, **charptr, *arg, *p; |
char *cp, **charptr, *arg, *p; |
int linenum, *intptr, value; |
int *intptr, value; |
int bad_options = 0; |
|
ServerOpCodes opcode; |
ServerOpCodes opcode; |
int i; |
int i, n; |
|
|
f = fopen(filename, "r"); |
cp = line; |
if (!f) { |
arg = strdelim(&cp); |
perror(filename); |
/* Ignore leading whitespace */ |
exit(1); |
if (*arg == '\0') |
} |
|
linenum = 0; |
|
while (fgets(line, sizeof(line), f)) { |
|
linenum++; |
|
cp = line; |
|
arg = strdelim(&cp); |
arg = strdelim(&cp); |
/* Ignore leading whitespace */ |
if (!arg || !*arg || *arg == '#') |
if (*arg == '\0') |
return 0; |
arg = strdelim(&cp); |
intptr = NULL; |
if (!arg || !*arg || *arg == '#') |
charptr = NULL; |
continue; |
opcode = parse_token(arg, filename, linenum); |
intptr = NULL; |
switch (opcode) { |
charptr = NULL; |
case sBadOption: |
opcode = parse_token(arg, filename, linenum); |
return -1; |
switch (opcode) { |
case sPort: |
case sBadOption: |
/* ignore ports from configfile if cmdline specifies ports */ |
bad_options++; |
if (options->ports_from_cmdline) |
continue; |
return 0; |
case sPort: |
if (options->listen_addrs != NULL) |
/* ignore ports from configfile if cmdline specifies ports */ |
fatal("%s line %d: ports must be specified before " |
if (options->ports_from_cmdline) |
"ListenAddress.", filename, linenum); |
continue; |
if (options->num_ports >= MAX_PORTS) |
if (options->listen_addrs != NULL) |
fatal("%s line %d: too many ports.", |
fatal("%s line %d: ports must be specified before " |
filename, linenum); |
"ListenAdress.\n", filename, linenum); |
arg = strdelim(&cp); |
if (options->num_ports >= MAX_PORTS) |
if (!arg || *arg == '\0') |
fatal("%s line %d: too many ports.", |
fatal("%s line %d: missing port number.", |
filename, linenum); |
filename, linenum); |
arg = strdelim(&cp); |
options->ports[options->num_ports++] = a2port(arg); |
if (!arg || *arg == '\0') |
if (options->ports[options->num_ports-1] == 0) |
fatal("%s line %d: missing port number.", |
fatal("%s line %d: Badly formatted port number.", |
filename, linenum); |
filename, linenum); |
options->ports[options->num_ports++] = a2port(arg); |
break; |
if (options->ports[options->num_ports-1] == 0) |
|
fatal("%s line %d: Badly formatted port number.", |
|
filename, linenum); |
|
break; |
|
|
|
case sServerKeyBits: |
case sServerKeyBits: |
intptr = &options->server_key_bits; |
intptr = &options->server_key_bits; |
parse_int: |
parse_int: |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: missing integer value.", |
fatal("%s line %d: missing integer value.", |
filename, linenum); |
filename, linenum); |
value = atoi(arg); |
value = atoi(arg); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = value; |
*intptr = value; |
break; |
break; |
|
|
case sLoginGraceTime: |
case sLoginGraceTime: |
intptr = &options->login_grace_time; |
intptr = &options->login_grace_time; |
goto parse_int; |
parse_time: |
|
arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') |
|
fatal("%s line %d: missing time value.", |
|
filename, linenum); |
|
if ((value = convtime(arg)) == -1) |
|
fatal("%s line %d: invalid time value.", |
|
filename, linenum); |
|
if (*intptr == -1) |
|
*intptr = value; |
|
break; |
|
|
case sKeyRegenerationTime: |
case sKeyRegenerationTime: |
intptr = &options->key_regeneration_time; |
intptr = &options->key_regeneration_time; |
goto parse_int; |
goto parse_time; |
|
|
case sListenAddress: |
case sListenAddress: |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
if (!arg || *arg == '\0' || strncmp(arg, "[]", 2) == 0) |
fatal("%s line %d: missing inet addr.", |
fatal("%s line %d: missing inet addr.", |
|
filename, linenum); |
|
if (*arg == '[') { |
|
if ((p = strchr(arg, ']')) == NULL) |
|
fatal("%s line %d: bad ipv6 inet addr usage.", |
filename, linenum); |
filename, linenum); |
if (*arg == '[') { |
arg++; |
if ((p = strchr(arg, ']')) == NULL) |
memmove(p, p+1, strlen(p+1)+1); |
fatal("%s line %d: bad ipv6 inet addr usage.", |
} else if (((p = strchr(arg, ':')) == NULL) || |
filename, linenum); |
(strchr(p+1, ':') != NULL)) { |
arg++; |
add_listen_addr(options, arg, 0); |
memmove(p, p+1, strlen(p+1)+1); |
|
} else if (((p = strchr(arg, ':')) == NULL) || |
|
(strchr(p+1, ':') != NULL)) { |
|
add_listen_addr(options, arg, 0); |
|
break; |
|
} |
|
if (*p == ':') { |
|
u_short port; |
|
|
|
p++; |
|
if (*p == '\0') |
|
fatal("%s line %d: bad inet addr:port usage.", |
|
filename, linenum); |
|
else { |
|
*(p-1) = '\0'; |
|
if ((port = a2port(p)) == 0) |
|
fatal("%s line %d: bad port number.", |
|
filename, linenum); |
|
add_listen_addr(options, arg, port); |
|
} |
|
} else if (*p == '\0') |
|
add_listen_addr(options, arg, 0); |
|
else |
|
fatal("%s line %d: bad inet addr usage.", |
|
filename, linenum); |
|
break; |
break; |
|
} |
|
if (*p == ':') { |
|
u_short port; |
|
|
case sHostKeyFile: |
p++; |
intptr = &options->num_host_key_files; |
if (*p == '\0') |
if (*intptr >= MAX_HOSTKEYS) |
fatal("%s line %d: bad inet addr:port usage.", |
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); |
filename, linenum); |
if (*charptr == NULL) { |
else { |
*charptr = tilde_expand_filename(arg, getuid()); |
*(p-1) = '\0'; |
/* increase optional counter */ |
if ((port = a2port(p)) == 0) |
if (intptr != NULL) |
fatal("%s line %d: bad port number.", |
*intptr = *intptr + 1; |
filename, linenum); |
|
add_listen_addr(options, arg, port); |
} |
} |
break; |
} else if (*p == '\0') |
|
add_listen_addr(options, arg, 0); |
|
else |
|
fatal("%s line %d: bad inet addr usage.", |
|
filename, linenum); |
|
break; |
|
|
case sPidFile: |
case sHostKeyFile: |
charptr = &options->pid_file; |
intptr = &options->num_host_key_files; |
goto parse_filename; |
if (*intptr >= MAX_HOSTKEYS) |
|
fatal("%s line %d: too many host keys specified (max %d).", |
|
filename, linenum, MAX_HOSTKEYS); |
|
charptr = &options->host_key_files[*intptr]; |
|
parse_filename: |
|
arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') |
|
fatal("%s line %d: missing file name.", |
|
filename, linenum); |
|
if (*charptr == NULL) { |
|
*charptr = tilde_expand_filename(arg, getuid()); |
|
/* increase optional counter */ |
|
if (intptr != NULL) |
|
*intptr = *intptr + 1; |
|
} |
|
break; |
|
|
case sPermitRootLogin: |
case sPidFile: |
intptr = &options->permit_root_login; |
charptr = &options->pid_file; |
arg = strdelim(&cp); |
goto parse_filename; |
if (!arg || *arg == '\0') |
|
fatal("%s line %d: missing yes/" |
|
"without-password/forced-commands-only/no " |
|
"argument.", filename, linenum); |
|
value = 0; /* silence compiler */ |
|
if (strcmp(arg, "without-password") == 0) |
|
value = PERMIT_NO_PASSWD; |
|
else if (strcmp(arg, "forced-commands-only") == 0) |
|
value = PERMIT_FORCED_ONLY; |
|
else if (strcmp(arg, "yes") == 0) |
|
value = PERMIT_YES; |
|
else if (strcmp(arg, "no") == 0) |
|
value = PERMIT_NO; |
|
else |
|
fatal("%s line %d: Bad yes/" |
|
"without-password/forced-commands-only/no " |
|
"argument: %s", filename, linenum, arg); |
|
if (*intptr == -1) |
|
*intptr = value; |
|
break; |
|
|
|
case sIgnoreRhosts: |
case sPermitRootLogin: |
intptr = &options->ignore_rhosts; |
intptr = &options->permit_root_login; |
|
arg = strdelim(&cp); |
|
if (!arg || *arg == '\0') |
|
fatal("%s line %d: missing yes/" |
|
"without-password/forced-commands-only/no " |
|
"argument.", filename, linenum); |
|
value = 0; /* silence compiler */ |
|
if (strcmp(arg, "without-password") == 0) |
|
value = PERMIT_NO_PASSWD; |
|
else if (strcmp(arg, "forced-commands-only") == 0) |
|
value = PERMIT_FORCED_ONLY; |
|
else if (strcmp(arg, "yes") == 0) |
|
value = PERMIT_YES; |
|
else if (strcmp(arg, "no") == 0) |
|
value = PERMIT_NO; |
|
else |
|
fatal("%s line %d: Bad yes/" |
|
"without-password/forced-commands-only/no " |
|
"argument: %s", filename, linenum, arg); |
|
if (*intptr == -1) |
|
*intptr = value; |
|
break; |
|
|
|
case sIgnoreRhosts: |
|
intptr = &options->ignore_rhosts; |
parse_flag: |
parse_flag: |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: missing yes/no argument.", |
fatal("%s line %d: missing yes/no argument.", |
filename, linenum); |
filename, linenum); |
value = 0; /* silence compiler */ |
value = 0; /* silence compiler */ |
if (strcmp(arg, "yes") == 0) |
if (strcmp(arg, "yes") == 0) |
value = 1; |
value = 1; |
else if (strcmp(arg, "no") == 0) |
else if (strcmp(arg, "no") == 0) |
value = 0; |
value = 0; |
else |
else |
fatal("%s line %d: Bad yes/no argument: %s", |
fatal("%s line %d: Bad yes/no argument: %s", |
filename, linenum, arg); |
filename, linenum, arg); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = value; |
*intptr = value; |
break; |
break; |
|
|
case sIgnoreUserKnownHosts: |
case sIgnoreUserKnownHosts: |
intptr = &options->ignore_user_known_hosts; |
intptr = &options->ignore_user_known_hosts; |
goto parse_flag; |
goto parse_flag; |
|
|
case sRhostsAuthentication: |
case sRhostsAuthentication: |
intptr = &options->rhosts_authentication; |
intptr = &options->rhosts_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sRhostsRSAAuthentication: |
case sRhostsRSAAuthentication: |
intptr = &options->rhosts_rsa_authentication; |
intptr = &options->rhosts_rsa_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sHostbasedAuthentication: |
case sHostbasedAuthentication: |
intptr = &options->hostbased_authentication; |
intptr = &options->hostbased_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sHostbasedUsesNameFromPacketOnly: |
case sHostbasedUsesNameFromPacketOnly: |
intptr = &options->hostbased_uses_name_from_packet_only; |
intptr = &options->hostbased_uses_name_from_packet_only; |
goto parse_flag; |
goto parse_flag; |
|
|
case sRSAAuthentication: |
case sRSAAuthentication: |
intptr = &options->rsa_authentication; |
intptr = &options->rsa_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sPubkeyAuthentication: |
case sPubkeyAuthentication: |
intptr = &options->pubkey_authentication; |
intptr = &options->pubkey_authentication; |
goto parse_flag; |
goto parse_flag; |
|
#if defined(KRB4) || defined(KRB5) |
|
case sKerberosAuthentication: |
|
intptr = &options->kerberos_authentication; |
|
goto parse_flag; |
|
|
#ifdef KRB4 |
case sKerberosOrLocalPasswd: |
case sKerberosAuthentication: |
intptr = &options->kerberos_or_local_passwd; |
intptr = &options->kerberos_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
|
case sKerberosOrLocalPasswd: |
case sKerberosTicketCleanup: |
intptr = &options->kerberos_or_local_passwd; |
intptr = &options->kerberos_ticket_cleanup; |
goto parse_flag; |
goto parse_flag; |
|
|
case sKerberosTicketCleanup: |
|
intptr = &options->kerberos_ticket_cleanup; |
|
goto parse_flag; |
|
#endif |
#endif |
|
#if defined(AFS) || defined(KRB5) |
|
case sKerberosTgtPassing: |
|
intptr = &options->kerberos_tgt_passing; |
|
goto parse_flag; |
|
#endif |
#ifdef AFS |
#ifdef AFS |
case sKerberosTgtPassing: |
case sAFSTokenPassing: |
intptr = &options->kerberos_tgt_passing; |
intptr = &options->afs_token_passing; |
goto parse_flag; |
goto parse_flag; |
|
|
case sAFSTokenPassing: |
|
intptr = &options->afs_token_passing; |
|
goto parse_flag; |
|
#endif |
#endif |
|
|
case sPasswordAuthentication: |
case sPasswordAuthentication: |
intptr = &options->password_authentication; |
intptr = &options->password_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sKbdInteractiveAuthentication: |
case sKbdInteractiveAuthentication: |
intptr = &options->kbd_interactive_authentication; |
intptr = &options->kbd_interactive_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sCheckMail: |
case sChallengeResponseAuthentication: |
intptr = &options->check_mail; |
intptr = &options->challenge_response_authentication; |
goto parse_flag; |
goto parse_flag; |
|
|
case sChallengeResponseAuthentication: |
case sPrintMotd: |
intptr = &options->challenge_reponse_authentication; |
intptr = &options->print_motd; |
goto parse_flag; |
goto parse_flag; |
|
|
case sPrintMotd: |
case sPrintLastLog: |
intptr = &options->print_motd; |
intptr = &options->print_lastlog; |
goto parse_flag; |
goto parse_flag; |
|
|
case sPrintLastLog: |
case sX11Forwarding: |
intptr = &options->print_lastlog; |
intptr = &options->x11_forwarding; |
goto parse_flag; |
goto parse_flag; |
|
|
case sX11Forwarding: |
case sX11DisplayOffset: |
intptr = &options->x11_forwarding; |
intptr = &options->x11_display_offset; |
goto parse_flag; |
goto parse_int; |
|
|
case sX11DisplayOffset: |
case sX11UseLocalhost: |
intptr = &options->x11_display_offset; |
intptr = &options->x11_use_localhost; |
goto parse_int; |
goto parse_flag; |
|
|
case sXAuthLocation: |
case sXAuthLocation: |
charptr = &options->xauth_location; |
charptr = &options->xauth_location; |
goto parse_filename; |
goto parse_filename; |
|
|
case sStrictModes: |
case sStrictModes: |
intptr = &options->strict_modes; |
intptr = &options->strict_modes; |
goto parse_flag; |
goto parse_flag; |
|
|
case sKeepAlives: |
case sKeepAlives: |
intptr = &options->keepalives; |
intptr = &options->keepalives; |
goto parse_flag; |
goto parse_flag; |
|
|
case sEmptyPasswd: |
case sEmptyPasswd: |
intptr = &options->permit_empty_passwd; |
intptr = &options->permit_empty_passwd; |
goto parse_flag; |
goto parse_flag; |
|
|
case sUseLogin: |
case sUseLogin: |
intptr = &options->use_login; |
intptr = &options->use_login; |
goto parse_flag; |
goto parse_flag; |
|
|
case sGatewayPorts: |
case sGatewayPorts: |
intptr = &options->gateway_ports; |
intptr = &options->gateway_ports; |
goto parse_flag; |
goto parse_flag; |
|
|
case sReverseMappingCheck: |
case sVerifyReverseMapping: |
intptr = &options->reverse_mapping_check; |
intptr = &options->verify_reverse_mapping; |
goto parse_flag; |
goto parse_flag; |
|
|
case sLogFacility: |
case sLogFacility: |
intptr = (int *) &options->log_facility; |
intptr = (int *) &options->log_facility; |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
value = log_facility_number(arg); |
value = log_facility_number(arg); |
if (value == (SyslogFacility) - 1) |
if (value == SYSLOG_FACILITY_NOT_SET) |
fatal("%.200s line %d: unsupported log facility '%s'", |
fatal("%.200s line %d: unsupported log facility '%s'", |
filename, linenum, arg ? arg : "<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; |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
value = log_level_number(arg); |
value = log_level_number(arg); |
if (value == (LogLevel) - 1) |
if (value == SYSLOG_LEVEL_NOT_SET) |
fatal("%.200s line %d: unsupported log level '%s'", |
fatal("%.200s line %d: unsupported log level '%s'", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == -1) |
if (*intptr == -1) |
*intptr = (LogLevel) value; |
*intptr = (LogLevel) value; |
break; |
break; |
|
|
case sAllowTcpForwarding: |
case sAllowTcpForwarding: |
intptr = &options->allow_tcp_forwarding; |
intptr = &options->allow_tcp_forwarding; |
goto parse_flag; |
goto parse_flag; |
|
|
case sAllowUsers: |
case sAllowUsers: |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
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.", |
fatal("%s line %d: too many allow users.", |
filename, linenum); |
filename, linenum); |
options->allow_users[options->num_allow_users++] = xstrdup(arg); |
options->allow_users[options->num_allow_users++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sDenyUsers: |
case sDenyUsers: |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
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.", |
fatal( "%s line %d: too many deny users.", |
filename, linenum); |
filename, linenum); |
options->deny_users[options->num_deny_users++] = xstrdup(arg); |
options->deny_users[options->num_deny_users++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sAllowGroups: |
case sAllowGroups: |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
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.", |
fatal("%s line %d: too many allow groups.", |
filename, linenum); |
filename, linenum); |
options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
options->allow_groups[options->num_allow_groups++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sDenyGroups: |
case sDenyGroups: |
while ((arg = strdelim(&cp)) && *arg != '\0') { |
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.", |
fatal("%s line %d: too many deny groups.", |
filename, linenum); |
filename, linenum); |
options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
options->deny_groups[options->num_deny_groups++] = xstrdup(arg); |
} |
} |
break; |
break; |
|
|
case sCiphers: |
case sCiphers: |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: Missing argument.", filename, linenum); |
fatal("%s line %d: Missing argument.", filename, linenum); |
if (!ciphers_valid(arg)) |
if (!ciphers_valid(arg)) |
fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
fatal("%s line %d: Bad SSH2 cipher spec '%s'.", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (options->ciphers == NULL) |
if (options->ciphers == NULL) |
options->ciphers = xstrdup(arg); |
options->ciphers = xstrdup(arg); |
break; |
break; |
|
|
case sMacs: |
case sMacs: |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: Missing argument.", filename, linenum); |
fatal("%s line %d: Missing argument.", filename, linenum); |
if (!mac_valid(arg)) |
if (!mac_valid(arg)) |
fatal("%s line %d: Bad SSH2 mac spec '%s'.", |
fatal("%s line %d: Bad SSH2 mac spec '%s'.", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (options->macs == NULL) |
if (options->macs == NULL) |
options->macs = xstrdup(arg); |
options->macs = xstrdup(arg); |
break; |
break; |
|
|
case sProtocol: |
case sProtocol: |
intptr = &options->protocol; |
intptr = &options->protocol; |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: Missing argument.", filename, linenum); |
fatal("%s line %d: Missing argument.", filename, linenum); |
value = proto_spec(arg); |
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, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*intptr == SSH_PROTO_UNKNOWN) |
if (*intptr == SSH_PROTO_UNKNOWN) |
*intptr = value; |
*intptr = value; |
break; |
break; |
|
|
case sSubsystem: |
case sSubsystem: |
if(options->num_subsystems >= MAX_SUBSYSTEMS) { |
if (options->num_subsystems >= MAX_SUBSYSTEMS) { |
fatal("%s line %d: too many subsystems defined.", |
fatal("%s line %d: too many subsystems defined.", |
filename, linenum); |
filename, linenum); |
} |
} |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: Missing subsystem name.", |
fatal("%s line %d: Missing subsystem name.", |
filename, linenum); |
filename, linenum); |
for (i = 0; i < options->num_subsystems; i++) |
for (i = 0; i < options->num_subsystems; i++) |
if(strcmp(arg, options->subsystem_name[i]) == 0) |
if (strcmp(arg, options->subsystem_name[i]) == 0) |
fatal("%s line %d: Subsystem '%s' already defined.", |
fatal("%s line %d: Subsystem '%s' already defined.", |
filename, linenum, arg); |
filename, linenum, arg); |
options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
options->subsystem_name[options->num_subsystems] = xstrdup(arg); |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: Missing subsystem command.", |
fatal("%s line %d: Missing subsystem command.", |
filename, linenum); |
filename, linenum); |
options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
options->subsystem_command[options->num_subsystems] = xstrdup(arg); |
options->num_subsystems++; |
options->num_subsystems++; |
break; |
break; |
|
|
case sMaxStartups: |
case sMaxStartups: |
arg = strdelim(&cp); |
arg = strdelim(&cp); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%s line %d: Missing MaxStartups spec.", |
fatal("%s line %d: Missing MaxStartups spec.", |
filename, linenum); |
filename, linenum); |
if (sscanf(arg, "%d:%d:%d", |
if ((n = sscanf(arg, "%d:%d:%d", |
&options->max_startups_begin, |
&options->max_startups_begin, |
&options->max_startups_rate, |
&options->max_startups_rate, |
&options->max_startups) == 3) { |
&options->max_startups)) == 3) { |
if (options->max_startups_begin > |
if (options->max_startups_begin > |
options->max_startups || |
options->max_startups || |
options->max_startups_rate > 100 || |
options->max_startups_rate > 100 || |
options->max_startups_rate < 1) |
options->max_startups_rate < 1) |
fatal("%s line %d: Illegal MaxStartups spec.", |
fatal("%s line %d: Illegal MaxStartups spec.", |
filename, linenum); |
filename, linenum); |
break; |
} else if (n != 1) |
} |
fatal("%s line %d: Illegal MaxStartups spec.", |
intptr = &options->max_startups; |
filename, linenum); |
goto parse_int; |
else |
|
options->max_startups = options->max_startups_begin; |
|
break; |
|
|
case sBanner: |
case sBanner: |
charptr = &options->banner; |
charptr = &options->banner; |
goto parse_filename; |
goto parse_filename; |
case sClientAliveInterval: |
/* |
intptr = &options->client_alive_interval; |
* These options can contain %X options expanded at |
goto parse_int; |
* connect time, so that you can specify paths like: |
case sClientAliveCountMax: |
* |
intptr = &options->client_alive_count_max; |
* AuthorizedKeysFile /etc_keys/%u |
goto parse_int; |
*/ |
default: |
case sAuthorizedKeysFile: |
fatal("%s line %d: Missing handler for opcode %s (%d)", |
case sAuthorizedKeysFile2: |
filename, linenum, arg, opcode); |
charptr = (opcode == sAuthorizedKeysFile ) ? |
} |
&options->authorized_keys_file : |
if ((arg = strdelim(&cp)) != NULL && *arg != '\0') |
&options->authorized_keys_file2; |
fatal("%s line %d: garbage at end of line; \"%.200s\".", |
goto parse_filename; |
filename, linenum, arg); |
|
|
case sClientAliveInterval: |
|
intptr = &options->client_alive_interval; |
|
goto parse_time; |
|
|
|
case sClientAliveCountMax: |
|
intptr = &options->client_alive_count_max; |
|
goto parse_int; |
|
|
|
case sDeprecated: |
|
log("%s line %d: Deprecated option %s", |
|
filename, linenum, arg); |
|
while (arg) |
|
arg = strdelim(&cp); |
|
break; |
|
|
|
default: |
|
fatal("%s line %d: Missing handler for opcode %s (%d)", |
|
filename, linenum, arg, opcode); |
|
} |
|
if ((arg = strdelim(&cp)) != NULL && *arg != '\0') |
|
fatal("%s line %d: garbage at end of line; \"%.200s\".", |
|
filename, linenum, arg); |
|
return 0; |
|
} |
|
|
|
/* Reads the server configuration file. */ |
|
|
|
void |
|
read_server_config(ServerOptions *options, const char *filename) |
|
{ |
|
FILE *f; |
|
char line[1024]; |
|
int linenum; |
|
int bad_options = 0; |
|
|
|
f = fopen(filename, "r"); |
|
if (!f) { |
|
perror(filename); |
|
exit(1); |
|
} |
|
linenum = 0; |
|
while (fgets(line, sizeof(line), f)) { |
|
/* Update line number counter. */ |
|
linenum++; |
|
if (process_server_config_line(options, line, filename, linenum) != 0) |
|
bad_options++; |
} |
} |
fclose(f); |
fclose(f); |
if (bad_options > 0) |
if (bad_options > 0) |