version 1.49.2.7, 2002/03/08 17:04:42 |
version 1.50, 2000/11/12 19:50:37 |
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RCSID("$OpenBSD$"); |
RCSID("$OpenBSD$"); |
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#include "ssh.h" |
#include "ssh.h" |
#include "xmalloc.h" |
|
#include "compat.h" |
|
#include "cipher.h" |
|
#include "pathnames.h" |
|
#include "log.h" |
|
#include "readconf.h" |
#include "readconf.h" |
#include "match.h" |
#include "match.h" |
#include "misc.h" |
#include "xmalloc.h" |
#include "kex.h" |
#include "compat.h" |
#include "mac.h" |
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|
|
/* Format of the configuration file: |
/* Format of the configuration file: |
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|
|
|
oBadOption, |
oBadOption, |
oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication, |
oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication, |
oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh, |
oPasswordAuthentication, oRSAAuthentication, oFallBackToRsh, oUseRsh, |
oChallengeResponseAuthentication, oXAuthLocation, |
oSkeyAuthentication, oXAuthLocation, |
#if defined(KRB4) || defined(KRB5) |
#ifdef KRB4 |
oKerberosAuthentication, |
oKerberosAuthentication, |
#endif |
#endif /* KRB4 */ |
#if defined(AFS) || defined(KRB5) |
|
oKerberosTgtPassing, |
|
#endif |
|
#ifdef AFS |
#ifdef AFS |
oAFSTokenPassing, |
oKerberosTgtPassing, oAFSTokenPassing, |
#endif |
#endif |
oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, |
oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, |
oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, |
oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, |
oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, |
oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, |
oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, |
oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, |
oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, |
oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, oTISAuthentication, |
oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs, |
oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, |
oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication, |
oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication, |
oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias, |
oKbdInteractiveAuthentication, oKbdInteractiveDevices |
oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication, |
|
oHostKeyAlgorithms, oBindAddress, oSmartcardDevice, |
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oClearAllForwardings, oNoHostAuthenticationForLocalhost |
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} OpCodes; |
} OpCodes; |
|
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/* Textual representations of the tokens. */ |
/* Textual representations of the tokens. */ |
|
|
{ "kbdinteractivedevices", oKbdInteractiveDevices }, |
{ "kbdinteractivedevices", oKbdInteractiveDevices }, |
{ "rsaauthentication", oRSAAuthentication }, |
{ "rsaauthentication", oRSAAuthentication }, |
{ "pubkeyauthentication", oPubkeyAuthentication }, |
{ "pubkeyauthentication", oPubkeyAuthentication }, |
{ "dsaauthentication", oPubkeyAuthentication }, /* alias */ |
{ "dsaauthentication", oPubkeyAuthentication }, /* alias */ |
{ "rhostsrsaauthentication", oRhostsRSAAuthentication }, |
{ "skeyauthentication", oSkeyAuthentication }, |
{ "hostbasedauthentication", oHostbasedAuthentication }, |
#ifdef KRB4 |
{ "challengeresponseauthentication", oChallengeResponseAuthentication }, |
|
{ "skeyauthentication", oChallengeResponseAuthentication }, /* alias */ |
|
{ "tisauthentication", oChallengeResponseAuthentication }, /* alias */ |
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#if defined(KRB4) || defined(KRB5) |
|
{ "kerberosauthentication", oKerberosAuthentication }, |
{ "kerberosauthentication", oKerberosAuthentication }, |
#endif |
#endif /* KRB4 */ |
#if defined(AFS) || defined(KRB5) |
|
{ "kerberostgtpassing", oKerberosTgtPassing }, |
|
#endif |
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#ifdef AFS |
#ifdef AFS |
|
{ "kerberostgtpassing", oKerberosTgtPassing }, |
{ "afstokenpassing", oAFSTokenPassing }, |
{ "afstokenpassing", oAFSTokenPassing }, |
#endif |
#endif |
{ "fallbacktorsh", oFallBackToRsh }, |
{ "fallbacktorsh", oFallBackToRsh }, |
|
|
{ "identityfile", oIdentityFile }, |
{ "identityfile", oIdentityFile }, |
{ "identityfile2", oIdentityFile }, /* alias */ |
{ "identityfile2", oIdentityFile }, /* alias */ |
{ "hostname", oHostName }, |
{ "hostname", oHostName }, |
{ "hostkeyalias", oHostKeyAlias }, |
|
{ "proxycommand", oProxyCommand }, |
{ "proxycommand", oProxyCommand }, |
{ "port", oPort }, |
{ "port", oPort }, |
{ "cipher", oCipher }, |
{ "cipher", oCipher }, |
{ "ciphers", oCiphers }, |
{ "ciphers", oCiphers }, |
{ "macs", oMacs }, |
|
{ "protocol", oProtocol }, |
{ "protocol", oProtocol }, |
{ "remoteforward", oRemoteForward }, |
{ "remoteforward", oRemoteForward }, |
{ "localforward", oLocalForward }, |
{ "localforward", oLocalForward }, |
{ "user", oUser }, |
{ "user", oUser }, |
{ "host", oHost }, |
{ "host", oHost }, |
{ "escapechar", oEscapeChar }, |
{ "escapechar", oEscapeChar }, |
|
{ "rhostsrsaauthentication", oRhostsRSAAuthentication }, |
{ "globalknownhostsfile", oGlobalKnownHostsFile }, |
{ "globalknownhostsfile", oGlobalKnownHostsFile }, |
{ "userknownhostsfile", oUserKnownHostsFile }, /* obsolete */ |
{ "userknownhostsfile", oUserKnownHostsFile }, |
{ "globalknownhostsfile2", oGlobalKnownHostsFile2 }, |
{ "globalknownhostsfile2", oGlobalKnownHostsFile2 }, |
{ "userknownhostsfile2", oUserKnownHostsFile2 }, /* obsolete */ |
{ "userknownhostsfile2", oUserKnownHostsFile2 }, |
{ "connectionattempts", oConnectionAttempts }, |
{ "connectionattempts", oConnectionAttempts }, |
{ "batchmode", oBatchMode }, |
{ "batchmode", oBatchMode }, |
{ "checkhostip", oCheckHostIP }, |
{ "checkhostip", oCheckHostIP }, |
|
|
{ "compressionlevel", oCompressionLevel }, |
{ "compressionlevel", oCompressionLevel }, |
{ "keepalive", oKeepAlives }, |
{ "keepalive", oKeepAlives }, |
{ "numberofpasswordprompts", oNumberOfPasswordPrompts }, |
{ "numberofpasswordprompts", oNumberOfPasswordPrompts }, |
|
{ "tisauthentication", oTISAuthentication }, |
{ "loglevel", oLogLevel }, |
{ "loglevel", oLogLevel }, |
{ "dynamicforward", oDynamicForward }, |
{ NULL, 0 } |
{ "preferredauthentications", oPreferredAuthentications }, |
|
{ "hostkeyalgorithms", oHostKeyAlgorithms }, |
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{ "bindaddress", oBindAddress }, |
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{ "smartcarddevice", oSmartcardDevice }, |
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{ "clearallforwardings", oClearAllForwardings }, |
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{ "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost }, |
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{ NULL, oBadOption } |
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}; |
}; |
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/* |
/* |
|
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Forward *fwd; |
Forward *fwd; |
extern uid_t original_real_uid; |
extern uid_t original_real_uid; |
if (port < IPPORT_RESERVED && original_real_uid != 0) |
if (port < IPPORT_RESERVED && original_real_uid != 0) |
fatal("Privileged ports can only be forwarded by root."); |
fatal("Privileged ports can only be forwarded by root.\n"); |
if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
if (options->num_local_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION); |
fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION); |
fwd = &options->local_forwards[options->num_local_forwards++]; |
fwd = &options->local_forwards[options->num_local_forwards++]; |
|
|
Forward *fwd; |
Forward *fwd; |
if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
if (options->num_remote_forwards >= SSH_MAX_FORWARDS_PER_DIRECTION) |
fatal("Too many remote forwards (max %d).", |
fatal("Too many remote forwards (max %d).", |
SSH_MAX_FORWARDS_PER_DIRECTION); |
SSH_MAX_FORWARDS_PER_DIRECTION); |
fwd = &options->remote_forwards[options->num_remote_forwards++]; |
fwd = &options->remote_forwards[options->num_remote_forwards++]; |
fwd->port = port; |
fwd->port = port; |
fwd->host = xstrdup(host); |
fwd->host = xstrdup(host); |
fwd->host_port = host_port; |
fwd->host_port = host_port; |
} |
} |
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static void |
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clear_forwardings(Options *options) |
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{ |
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int i; |
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for (i = 0; i < options->num_local_forwards; i++) |
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xfree(options->local_forwards[i].host); |
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options->num_local_forwards = 0; |
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for (i = 0; i < options->num_remote_forwards; i++) |
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xfree(options->remote_forwards[i].host); |
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options->num_remote_forwards = 0; |
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} |
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/* |
/* |
* Returns the number of the token pointed to by cp or oBadOption. |
* Returns the number of the token pointed to by cp of length len. Never |
|
* returns if the token is not known. |
*/ |
*/ |
|
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static OpCodes |
static OpCodes |
parse_token(const char *cp, const char *filename, int linenum) |
parse_token(const char *cp, const char *filename, int linenum) |
{ |
{ |
u_int i; |
unsigned int i; |
|
|
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) |
return keywords[i].opcode; |
return keywords[i].opcode; |
|
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error("%s: line %d: Bad configuration option: %s", |
fprintf(stderr, "%s: line %d: Bad configuration option: %s\n", |
filename, linenum, cp); |
filename, linenum, cp); |
return oBadOption; |
return oBadOption; |
} |
} |
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char buf[256], *s, *string, **charptr, *endofnumber, *keyword, *arg; |
char buf[256], *s, *string, **charptr, *endofnumber, *keyword, *arg; |
int opcode, *intptr, value; |
int opcode, *intptr, value; |
u_short fwd_port, fwd_host_port; |
u_short fwd_port, fwd_host_port; |
char sfwd_host_port[6]; |
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s = line; |
s = line; |
/* Get the keyword. (Each line is supposed to begin with a keyword). */ |
/* Get the keyword. (Each line is supposed to begin with a keyword). */ |
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/* Ignore leading whitespace. */ |
/* Ignore leading whitespace. */ |
if (*keyword == '\0') |
if (*keyword == '\0') |
keyword = strdelim(&s); |
keyword = strdelim(&s); |
if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#') |
if (!*keyword || *keyword == '\n' || *keyword == '#') |
return 0; |
return 0; |
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opcode = parse_token(keyword, filename, linenum); |
opcode = parse_token(keyword, filename, linenum); |
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intptr = &options->rhosts_rsa_authentication; |
intptr = &options->rhosts_rsa_authentication; |
goto parse_flag; |
goto parse_flag; |
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case oHostbasedAuthentication: |
case oTISAuthentication: |
intptr = &options->hostbased_authentication; |
/* fallthrough, there is no difference on the client side */ |
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case oSkeyAuthentication: |
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intptr = &options->skey_authentication; |
goto parse_flag; |
goto parse_flag; |
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case oChallengeResponseAuthentication: |
#ifdef KRB4 |
intptr = &options->challenge_response_authentication; |
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goto parse_flag; |
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#if defined(KRB4) || defined(KRB5) |
|
case oKerberosAuthentication: |
case oKerberosAuthentication: |
intptr = &options->kerberos_authentication; |
intptr = &options->kerberos_authentication; |
goto parse_flag; |
goto parse_flag; |
#endif |
#endif /* KRB4 */ |
#if defined(AFS) || defined(KRB5) |
|
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#ifdef AFS |
case oKerberosTgtPassing: |
case oKerberosTgtPassing: |
intptr = &options->kerberos_tgt_passing; |
intptr = &options->kerberos_tgt_passing; |
goto parse_flag; |
goto parse_flag; |
#endif |
|
#ifdef AFS |
|
case oAFSTokenPassing: |
case oAFSTokenPassing: |
intptr = &options->afs_token_passing; |
intptr = &options->afs_token_passing; |
goto parse_flag; |
goto parse_flag; |
#endif |
#endif |
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case oFallBackToRsh: |
case oFallBackToRsh: |
intptr = &options->fallback_to_rsh; |
intptr = &options->fallback_to_rsh; |
goto parse_flag; |
goto parse_flag; |
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intptr = &options->strict_host_key_checking; |
intptr = &options->strict_host_key_checking; |
arg = strdelim(&s); |
arg = strdelim(&s); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%.200s line %d: Missing yes/no/ask argument.", |
fatal("%.200s line %d: Missing yes/no argument.", |
filename, linenum); |
filename, linenum); |
value = 0; /* To avoid compiler warning... */ |
value = 0; /* To avoid compiler warning... */ |
if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) |
if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) |
value = 1; |
value = 1; |
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intptr = &options->keepalives; |
intptr = &options->keepalives; |
goto parse_flag; |
goto parse_flag; |
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case oNoHostAuthenticationForLocalhost: |
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intptr = &options->no_host_authentication_for_localhost; |
|
goto parse_flag; |
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case oNumberOfPasswordPrompts: |
case oNumberOfPasswordPrompts: |
intptr = &options->number_of_password_prompts; |
intptr = &options->number_of_password_prompts; |
goto parse_int; |
goto parse_int; |
|
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intptr = &options->num_identity_files; |
intptr = &options->num_identity_files; |
if (*intptr >= SSH_MAX_IDENTITY_FILES) |
if (*intptr >= SSH_MAX_IDENTITY_FILES) |
fatal("%.200s line %d: Too many identity files specified (max %d).", |
fatal("%.200s line %d: Too many identity files specified (max %d).", |
filename, linenum, SSH_MAX_IDENTITY_FILES); |
filename, linenum, SSH_MAX_IDENTITY_FILES); |
charptr = &options->identity_files[*intptr]; |
charptr = &options->identity_files[*intptr]; |
*charptr = xstrdup(arg); |
*charptr = xstrdup(arg); |
*intptr = *intptr + 1; |
*intptr = *intptr + 1; |
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charptr = &options->hostname; |
charptr = &options->hostname; |
goto parse_string; |
goto parse_string; |
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case oHostKeyAlias: |
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charptr = &options->host_key_alias; |
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goto parse_string; |
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case oPreferredAuthentications: |
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charptr = &options->preferred_authentications; |
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goto parse_string; |
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case oBindAddress: |
|
charptr = &options->bind_address; |
|
goto parse_string; |
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|
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case oSmartcardDevice: |
|
charptr = &options->smartcard_device; |
|
goto parse_string; |
|
|
|
case oProxyCommand: |
case oProxyCommand: |
charptr = &options->proxy_command; |
charptr = &options->proxy_command; |
string = xstrdup(""); |
string = xstrdup(""); |
|
|
value = cipher_number(arg); |
value = cipher_number(arg); |
if (value == -1) |
if (value == -1) |
fatal("%.200s line %d: Bad cipher '%s'.", |
fatal("%.200s line %d: Bad cipher '%s'.", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*activep && *intptr == -1) |
if (*activep && *intptr == -1) |
*intptr = value; |
*intptr = value; |
break; |
break; |
|
|
fatal("%.200s line %d: Missing argument.", filename, linenum); |
fatal("%.200s line %d: Missing argument.", filename, linenum); |
if (!ciphers_valid(arg)) |
if (!ciphers_valid(arg)) |
fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.", |
fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*activep && options->ciphers == NULL) |
if (*activep && options->ciphers == NULL) |
options->ciphers = xstrdup(arg); |
options->ciphers = xstrdup(arg); |
break; |
break; |
|
|
case oMacs: |
|
arg = strdelim(&s); |
|
if (!arg || *arg == '\0') |
|
fatal("%.200s line %d: Missing argument.", filename, linenum); |
|
if (!mac_valid(arg)) |
|
fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.", |
|
filename, linenum, arg ? arg : "<NONE>"); |
|
if (*activep && options->macs == NULL) |
|
options->macs = xstrdup(arg); |
|
break; |
|
|
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case oHostKeyAlgorithms: |
|
arg = strdelim(&s); |
|
if (!arg || *arg == '\0') |
|
fatal("%.200s line %d: Missing argument.", filename, linenum); |
|
if (!key_names_valid2(arg)) |
|
fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.", |
|
filename, linenum, arg ? arg : "<NONE>"); |
|
if (*activep && options->hostkeyalgorithms == NULL) |
|
options->hostkeyalgorithms = xstrdup(arg); |
|
break; |
|
|
|
case oProtocol: |
case oProtocol: |
intptr = &options->protocol; |
intptr = &options->protocol; |
arg = strdelim(&s); |
arg = strdelim(&s); |
|
|
value = proto_spec(arg); |
value = proto_spec(arg); |
if (value == SSH_PROTO_UNKNOWN) |
if (value == SSH_PROTO_UNKNOWN) |
fatal("%.200s line %d: Bad protocol spec '%s'.", |
fatal("%.200s line %d: Bad protocol spec '%s'.", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*activep && *intptr == SSH_PROTO_UNKNOWN) |
if (*activep && *intptr == SSH_PROTO_UNKNOWN) |
*intptr = value; |
*intptr = value; |
break; |
break; |
|
|
intptr = (int *) &options->log_level; |
intptr = (int *) &options->log_level; |
arg = strdelim(&s); |
arg = strdelim(&s); |
value = log_level_number(arg); |
value = log_level_number(arg); |
if (value == SYSLOG_LEVEL_NOT_SET) |
if (value == (LogLevel) - 1) |
fatal("%.200s line %d: unsupported log level '%s'", |
fatal("%.200s line %d: unsupported log level '%s'\n", |
filename, linenum, arg ? arg : "<NONE>"); |
filename, linenum, arg ? arg : "<NONE>"); |
if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET) |
if (*activep && (LogLevel) * intptr == -1) |
*intptr = (LogLevel) value; |
*intptr = (LogLevel) value; |
break; |
break; |
|
|
case oLocalForward: |
|
case oRemoteForward: |
case oRemoteForward: |
arg = strdelim(&s); |
arg = strdelim(&s); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%.200s line %d: Missing port argument.", |
fatal("%.200s line %d: Missing argument.", filename, linenum); |
filename, linenum); |
if (arg[0] < '0' || arg[0] > '9') |
if ((fwd_port = a2port(arg)) == 0) |
fatal("%.200s line %d: Badly formatted port number.", |
fatal("%.200s line %d: Bad listen port.", |
filename, linenum); |
filename, linenum); |
fwd_port = atoi(arg); |
arg = strdelim(&s); |
arg = strdelim(&s); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%.200s line %d: Missing second argument.", |
fatal("%.200s line %d: Missing second argument.", |
filename, linenum); |
filename, linenum); |
if (sscanf(arg, "%255[^:]:%5[0-9]", buf, sfwd_host_port) != 2 && |
if (sscanf(arg, "%255[^:]:%hu", buf, &fwd_host_port) != 2) |
sscanf(arg, "%255[^/]/%5[0-9]", buf, sfwd_host_port) != 2) |
fatal("%.200s line %d: Badly formatted host:port.", |
fatal("%.200s line %d: Bad forwarding specification.", |
filename, linenum); |
filename, linenum); |
if (*activep) |
if ((fwd_host_port = a2port(sfwd_host_port)) == 0) |
add_remote_forward(options, fwd_port, buf, fwd_host_port); |
fatal("%.200s line %d: Bad forwarding port.", |
|
filename, linenum); |
|
if (*activep) { |
|
if (opcode == oLocalForward) |
|
add_local_forward(options, fwd_port, buf, |
|
fwd_host_port); |
|
else if (opcode == oRemoteForward) |
|
add_remote_forward(options, fwd_port, buf, |
|
fwd_host_port); |
|
} |
|
break; |
break; |
|
|
case oDynamicForward: |
case oLocalForward: |
arg = strdelim(&s); |
arg = strdelim(&s); |
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%.200s line %d: Missing port argument.", |
fatal("%.200s line %d: Missing argument.", filename, linenum); |
filename, linenum); |
if (arg[0] < '0' || arg[0] > '9') |
fwd_port = a2port(arg); |
|
if (fwd_port == 0) |
|
fatal("%.200s line %d: Badly formatted port number.", |
fatal("%.200s line %d: Badly formatted port number.", |
filename, linenum); |
filename, linenum); |
|
fwd_port = atoi(arg); |
|
arg = strdelim(&s); |
|
if (!arg || *arg == '\0') |
|
fatal("%.200s line %d: Missing second argument.", |
|
filename, linenum); |
|
if (sscanf(arg, "%255[^:]:%hu", buf, &fwd_host_port) != 2) |
|
fatal("%.200s line %d: Badly formatted host:port.", |
|
filename, linenum); |
if (*activep) |
if (*activep) |
add_local_forward(options, fwd_port, "socks4", 0); |
add_local_forward(options, fwd_port, buf, fwd_host_port); |
break; |
break; |
|
|
case oClearAllForwardings: |
|
intptr = &options->clear_forwardings; |
|
goto parse_flag; |
|
|
|
case oHost: |
case oHost: |
*activep = 0; |
*activep = 0; |
while ((arg = strdelim(&s)) != NULL && *arg != '\0') |
while ((arg = strdelim(&s)) != NULL && *arg != '\0') |
|
|
if (!arg || *arg == '\0') |
if (!arg || *arg == '\0') |
fatal("%.200s line %d: Missing argument.", filename, linenum); |
fatal("%.200s line %d: Missing argument.", filename, linenum); |
if (arg[0] == '^' && arg[2] == 0 && |
if (arg[0] == '^' && arg[2] == 0 && |
(u_char) arg[1] >= 64 && (u_char) arg[1] < 128) |
(unsigned char) arg[1] >= 64 && (unsigned char) arg[1] < 128) |
value = (u_char) arg[1] & 31; |
value = (unsigned char) arg[1] & 31; |
else if (strlen(arg) == 1) |
else if (strlen(arg) == 1) |
value = (u_char) arg[0]; |
value = (unsigned char) arg[0]; |
else if (strcmp(arg, "none") == 0) |
else if (strcmp(arg, "none") == 0) |
value = SSH_ESCAPECHAR_NONE; |
value = -2; |
else { |
else { |
fatal("%.200s line %d: Bad escape character.", |
fatal("%.200s line %d: Bad escape character.", |
filename, linenum); |
filename, linenum); |
/* NOTREACHED */ |
/* NOTREACHED */ |
value = 0; /* Avoid compiler warning. */ |
value = 0; /* Avoid compiler warning. */ |
} |
} |
|
|
} |
} |
|
|
/* Check that there is no garbage at end of line. */ |
/* Check that there is no garbage at end of line. */ |
if ((arg = strdelim(&s)) != NULL && *arg != '\0') { |
if ((arg = strdelim(&s)) != NULL && *arg != '\0') |
|
{ |
fatal("%.200s line %d: garbage at end of line; \"%.200s\".", |
fatal("%.200s line %d: garbage at end of line; \"%.200s\".", |
filename, linenum, arg); |
filename, linenum, arg); |
} |
} |
return 0; |
return 0; |
} |
} |
|
|
/* |
/* |
* Reads the config file and modifies the options accordingly. Options |
* Reads the config file and modifies the options accordingly. Options |
* should already be initialized before this call. This never returns if |
* should already be initialized before this call. This never returns if |
* there is an error. If the file does not exist, this returns 0. |
* there is an error. If the file does not exist, this returns immediately. |
*/ |
*/ |
|
|
int |
void |
read_config_file(const char *filename, const char *host, Options *options) |
read_config_file(const char *filename, const char *host, Options *options) |
{ |
{ |
FILE *f; |
FILE *f; |
|
|
/* Open the file. */ |
/* Open the file. */ |
f = fopen(filename, "r"); |
f = fopen(filename, "r"); |
if (!f) |
if (!f) |
return 0; |
return; |
|
|
debug("Reading configuration data %.200s", filename); |
debug("Reading configuration data %.200s", filename); |
|
|
|
|
} |
} |
fclose(f); |
fclose(f); |
if (bad_options > 0) |
if (bad_options > 0) |
fatal("%s: terminating, %d bad configuration options", |
fatal("%s: terminating, %d bad configuration options\n", |
filename, bad_options); |
filename, bad_options); |
return 1; |
|
} |
} |
|
|
/* |
/* |
|
|
options->rhosts_authentication = -1; |
options->rhosts_authentication = -1; |
options->rsa_authentication = -1; |
options->rsa_authentication = -1; |
options->pubkey_authentication = -1; |
options->pubkey_authentication = -1; |
options->challenge_response_authentication = -1; |
options->skey_authentication = -1; |
#if defined(KRB4) || defined(KRB5) |
#ifdef KRB4 |
options->kerberos_authentication = -1; |
options->kerberos_authentication = -1; |
#endif |
#endif |
#if defined(AFS) || defined(KRB5) |
|
options->kerberos_tgt_passing = -1; |
|
#endif |
|
#ifdef AFS |
#ifdef AFS |
|
options->kerberos_tgt_passing = -1; |
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->kbd_interactive_devices = NULL; |
options->kbd_interactive_devices = NULL; |
options->rhosts_rsa_authentication = -1; |
options->rhosts_rsa_authentication = -1; |
options->hostbased_authentication = -1; |
|
options->fallback_to_rsh = -1; |
options->fallback_to_rsh = -1; |
options->use_rsh = -1; |
options->use_rsh = -1; |
options->batch_mode = -1; |
options->batch_mode = -1; |
|
|
options->number_of_password_prompts = -1; |
options->number_of_password_prompts = -1; |
options->cipher = -1; |
options->cipher = -1; |
options->ciphers = NULL; |
options->ciphers = NULL; |
options->macs = NULL; |
|
options->hostkeyalgorithms = NULL; |
|
options->protocol = SSH_PROTO_UNKNOWN; |
options->protocol = SSH_PROTO_UNKNOWN; |
options->num_identity_files = 0; |
options->num_identity_files = 0; |
options->hostname = NULL; |
options->hostname = NULL; |
options->host_key_alias = NULL; |
|
options->proxy_command = NULL; |
options->proxy_command = NULL; |
options->user = NULL; |
options->user = NULL; |
options->escape_char = -1; |
options->escape_char = -1; |
|
|
options->user_hostfile2 = NULL; |
options->user_hostfile2 = NULL; |
options->num_local_forwards = 0; |
options->num_local_forwards = 0; |
options->num_remote_forwards = 0; |
options->num_remote_forwards = 0; |
options->clear_forwardings = -1; |
options->log_level = (LogLevel) - 1; |
options->log_level = SYSLOG_LEVEL_NOT_SET; |
|
options->preferred_authentications = NULL; |
|
options->bind_address = NULL; |
|
options->smartcard_device = NULL; |
|
options->no_host_authentication_for_localhost = - 1; |
|
} |
} |
|
|
/* |
/* |
|
|
void |
void |
fill_default_options(Options * options) |
fill_default_options(Options * options) |
{ |
{ |
int len; |
|
|
|
if (options->forward_agent == -1) |
if (options->forward_agent == -1) |
options->forward_agent = 0; |
options->forward_agent = 0; |
if (options->forward_x11 == -1) |
if (options->forward_x11 == -1) |
options->forward_x11 = 0; |
options->forward_x11 = 0; |
|
#ifdef XAUTH_PATH |
if (options->xauth_location == NULL) |
if (options->xauth_location == NULL) |
options->xauth_location = _PATH_XAUTH; |
options->xauth_location = XAUTH_PATH; |
|
#endif /* XAUTH_PATH */ |
if (options->gateway_ports == -1) |
if (options->gateway_ports == -1) |
options->gateway_ports = 0; |
options->gateway_ports = 0; |
if (options->use_privileged_port == -1) |
if (options->use_privileged_port == -1) |
options->use_privileged_port = 0; |
options->use_privileged_port = 1; |
if (options->rhosts_authentication == -1) |
if (options->rhosts_authentication == -1) |
options->rhosts_authentication = 1; |
options->rhosts_authentication = 1; |
if (options->rsa_authentication == -1) |
if (options->rsa_authentication == -1) |
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; |
if (options->challenge_response_authentication == -1) |
if (options->skey_authentication == -1) |
options->challenge_response_authentication = 1; |
options->skey_authentication = 0; |
#if defined(KRB4) || defined(KRB5) |
#ifdef KRB4 |
if (options->kerberos_authentication == -1) |
if (options->kerberos_authentication == -1) |
options->kerberos_authentication = 1; |
options->kerberos_authentication = 1; |
#endif |
#endif /* KRB4 */ |
#if defined(AFS) || defined(KRB5) |
#ifdef AFS |
if (options->kerberos_tgt_passing == -1) |
if (options->kerberos_tgt_passing == -1) |
options->kerberos_tgt_passing = 1; |
options->kerberos_tgt_passing = 1; |
#endif |
|
#ifdef AFS |
|
if (options->afs_token_passing == -1) |
if (options->afs_token_passing == -1) |
options->afs_token_passing = 1; |
options->afs_token_passing = 1; |
#endif |
#endif /* AFS */ |
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 = 1; |
options->kbd_interactive_authentication = 0; |
if (options->rhosts_rsa_authentication == -1) |
if (options->rhosts_rsa_authentication == -1) |
options->rhosts_rsa_authentication = 1; |
options->rhosts_rsa_authentication = 1; |
if (options->hostbased_authentication == -1) |
|
options->hostbased_authentication = 0; |
|
if (options->fallback_to_rsh == -1) |
if (options->fallback_to_rsh == -1) |
options->fallback_to_rsh = 0; |
options->fallback_to_rsh = 0; |
if (options->use_rsh == -1) |
if (options->use_rsh == -1) |
|
|
if (options->port == -1) |
if (options->port == -1) |
options->port = 0; /* Filled in ssh_connect. */ |
options->port = 0; /* Filled in ssh_connect. */ |
if (options->connection_attempts == -1) |
if (options->connection_attempts == -1) |
options->connection_attempts = 1; |
options->connection_attempts = 4; |
if (options->number_of_password_prompts == -1) |
if (options->number_of_password_prompts == -1) |
options->number_of_password_prompts = 3; |
options->number_of_password_prompts = 3; |
/* Selected in ssh_login(). */ |
/* Selected in ssh_login(). */ |
if (options->cipher == -1) |
if (options->cipher == -1) |
options->cipher = SSH_CIPHER_NOT_SET; |
options->cipher = SSH_CIPHER_NOT_SET; |
/* options->ciphers, default set in myproposals.h */ |
/* options->ciphers, default set in myproposals.h */ |
/* options->macs, default set in myproposals.h */ |
|
/* options->hostkeyalgorithms, default set in myproposals.h */ |
|
if (options->protocol == SSH_PROTO_UNKNOWN) |
if (options->protocol == SSH_PROTO_UNKNOWN) |
options->protocol = SSH_PROTO_1|SSH_PROTO_2; |
options->protocol = SSH_PROTO_1|SSH_PROTO_2|SSH_PROTO_1_PREFERRED; |
if (options->num_identity_files == 0) { |
if (options->num_identity_files == 0) { |
if (options->protocol & SSH_PROTO_1) { |
if (options->protocol & SSH_PROTO_1) { |
len = 2 + strlen(_PATH_SSH_CLIENT_IDENTITY) + 1; |
|
options->identity_files[options->num_identity_files] = |
options->identity_files[options->num_identity_files] = |
xmalloc(len); |
xmalloc(2 + strlen(SSH_CLIENT_IDENTITY) + 1); |
snprintf(options->identity_files[options->num_identity_files++], |
sprintf(options->identity_files[options->num_identity_files++], |
len, "~/%.100s", _PATH_SSH_CLIENT_IDENTITY); |
"~/%.100s", SSH_CLIENT_IDENTITY); |
} |
} |
if (options->protocol & SSH_PROTO_2) { |
if (options->protocol & SSH_PROTO_2) { |
len = 2 + strlen(_PATH_SSH_CLIENT_ID_RSA) + 1; |
|
options->identity_files[options->num_identity_files] = |
options->identity_files[options->num_identity_files] = |
xmalloc(len); |
xmalloc(2 + strlen(SSH_CLIENT_ID_DSA) + 1); |
snprintf(options->identity_files[options->num_identity_files++], |
sprintf(options->identity_files[options->num_identity_files++], |
len, "~/%.100s", _PATH_SSH_CLIENT_ID_RSA); |
"~/%.100s", SSH_CLIENT_ID_DSA); |
|
|
len = 2 + strlen(_PATH_SSH_CLIENT_ID_DSA) + 1; |
|
options->identity_files[options->num_identity_files] = |
|
xmalloc(len); |
|
snprintf(options->identity_files[options->num_identity_files++], |
|
len, "~/%.100s", _PATH_SSH_CLIENT_ID_DSA); |
|
} |
} |
} |
} |
if (options->escape_char == -1) |
if (options->escape_char == -1) |
options->escape_char = '~'; |
options->escape_char = '~'; |
if (options->system_hostfile == NULL) |
if (options->system_hostfile == NULL) |
options->system_hostfile = _PATH_SSH_SYSTEM_HOSTFILE; |
options->system_hostfile = SSH_SYSTEM_HOSTFILE; |
if (options->user_hostfile == NULL) |
if (options->user_hostfile == NULL) |
options->user_hostfile = _PATH_SSH_USER_HOSTFILE; |
options->user_hostfile = SSH_USER_HOSTFILE; |
if (options->system_hostfile2 == NULL) |
if (options->system_hostfile2 == NULL) |
options->system_hostfile2 = _PATH_SSH_SYSTEM_HOSTFILE2; |
options->system_hostfile2 = SSH_SYSTEM_HOSTFILE2; |
if (options->user_hostfile2 == NULL) |
if (options->user_hostfile2 == NULL) |
options->user_hostfile2 = _PATH_SSH_USER_HOSTFILE2; |
options->user_hostfile2 = SSH_USER_HOSTFILE2; |
if (options->log_level == SYSLOG_LEVEL_NOT_SET) |
if (options->log_level == (LogLevel) - 1) |
options->log_level = SYSLOG_LEVEL_INFO; |
options->log_level = SYSLOG_LEVEL_INFO; |
if (options->clear_forwardings == 1) |
|
clear_forwardings(options); |
|
if (options->no_host_authentication_for_localhost == - 1) |
|
options->no_host_authentication_for_localhost = 0; |
|
/* options->proxy_command should not be set by default */ |
/* options->proxy_command should not be set by default */ |
/* options->user will be set in the main program if appropriate */ |
/* options->user will be set in the main program if appropriate */ |
/* options->hostname will be set in the main program if appropriate */ |
/* options->hostname will be set in the main program if appropriate */ |
/* options->host_key_alias should not be set by default */ |
|
/* options->preferred_authentications will be set in ssh */ |
|
} |
} |