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Merge pull request #310 from terrafrost/keberos-fix

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ASN1 changes

* terrafrost/keberos-fix:
  ASN1: test case updates
  ASN1: add test cases for latest changes
  ASN1: CS update
  ASN1: make developing new ASN.1 scripts a little easier
  ASN1: make it so bit string's can have an optional minimum size
  ASN1: explicit application tags didn't work (although implicit ones did)
This commit is contained in:
Andreas Fischer 2014-04-18 16:47:48 +02:00
commit 14cfcc1b53
2 changed files with 256 additions and 3 deletions
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23
phpseclib/File/ASN1.php
View File

@ -509,7 +509,7 @@ class File_ASN1
*/
function asn1map($decoded, $mapping, $special = array())
{
if (isset($mapping['explicit'])) {
if (isset($mapping['explicit']) && is_array($decoded['content'])) {
$decoded = $decoded['content'][0];
}
@ -550,7 +550,15 @@ class File_ASN1
case $decoded['type'] == $mapping['type']:
break;
default:
return null;
// if $decoded['type'] and $mapping['type'] are both strings, but different types of strings,
// let it through
switch (true) {
case $decoded['type'] < 18: // FILE_ASN1_TYPE_NUMERIC_STRING == 18
case $decoded['type'] > 30: // FILE_ASN1_TYPE_BMP_STRING == 30
case $mapping['type'] < 18:
case $mapping['type'] > 30:
return null;
}
}
if (isset($mapping['implicit'])) {
@ -972,6 +980,10 @@ class File_ASN1
}
}
if (isset($mapping['min']) && $mapping['min'] >= 1 && $size < $mapping['min']) {
$size = $mapping['min'] - 1;
}
$offset = 8 - (($size + 1) & 7);
$offset = $offset !== 8 ? $offset : 0;
@ -1085,7 +1097,12 @@ class File_ASN1
}
if (isset($mapping['cast'])) {
$tag = ($mapping['class'] << 6) | ($tag & 0x20) | $mapping['cast'];
if (isset($mapping['explicit']) || $mapping['type'] == FILE_ASN1_TYPE_CHOICE) {
$value = chr($tag) . $this->_encodeLength(strlen($value)) . $value;
$tag = ($mapping['class'] << 6) | 0x20 | $mapping['cast'];
} else {
$tag = ($mapping['class'] << 6) | (ord($temp[0]) & 0x20) | $mapping['cast'];
}
}
return chr($tag) . $this->_encodeLength(strlen($value)) . $value;

236
tests/File/ASN1/DevTest.php Normal file
View File

@ -0,0 +1,236 @@
<?php
/**
* @author Jim Wigginton <terrafrost@php.net>
* @copyright MMXIV Jim Wigginton
* @license http://www.opensource.org/licenses/mit-license.html MIT License
*/
require_once 'File/ASN1.php';
class File_ASN1_DevTest extends PhpseclibTestCase
{
/**
* on older versions of File_ASN1 this would yield a PHP Warning
* @group github275
*/
public function testAnyString()
{
$KDC_REP = array(
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => array(
'pvno' => array(
'constant' => 0,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY),
'msg-type' => array(
'constant' => 1,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY),
'padata' => array(
'constant' => 2,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY),
'crealm' => array(
'constant' => 3,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY),
'cname' => array(
'constant' => 4,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY),
'ticket' => array(
'constant' => 5,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY),
'enc-part' => array(
'constant' => 6,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY)
)
);
$AS_REP = array(
'class' => FILE_ASN1_CLASS_APPLICATION,
'cast' => 11,
'optional' => true,
'explicit' => true
) + $KDC_REP;
$str = 'a4IC3jCCAtqgAwIBBaEDAgELoi8wLTAroQMCAROiJAQiMCAwHqADAgEXoRcbFUNSRUFUVUlUWS5ORVR0ZXN0dXNlcqMPGw' .
'1DUkVBVFVJVFkuTkVUpBUwE6ADAgEBoQwwChsIdGVzdHVzZXKlggFOYYIBSjCCAUagAwIBBaEPGw1DUkVBVFVJVFkuTkVU' .
'oiIwIKADAgECoRkwFxsGa3JidGd0Gw1DUkVBVFVJVFkuTkVUo4IBCDCCAQSgAwIBF6EDAgEBooH3BIH0AQlxgm/j4z74Ki' .
'GsJJnROhh8JAiN7pdvlnkxCYKdG6UgdfK/K0NZ+yz+Xg4kgFO1cQ4XYT4Fm3MTmOHzlFmbzlVkUqBI/RnWA9YTREC9Q7Mf' .
'PPYfRxRG/C6FlahxHCOKj9GUj7bXg7Oq3Sm+QsKTS2bZT05biNf1s7tPCkdIOO0AAd7hvTCpTNAKl+OLN4cpA6pwwk5c3h' .
'58Ce5/Uri5yBmrfwgkCD5AJUAI/WH56SEEvpifLc6C96w/7y2krAiZm5PyEO0HVhTzUjKGSHoSMb+Z3HI/ul+G9z0Z4qDu' .
'NjvgP0jKdrKiwWN00NjpiQ0byZd4y6aCASEwggEdoAMCAReiggEUBIIBEHyi8DIbdcfw2DpniBJ3Sh8dDaEbQx+gWx3omC' .
'TBEyts4sQGTwgQcqkWfeer8M+SkZs/GGZq2YYkyeF+9b6TxlYuX145NuB3KcyzaS7VNrX37E5nGgG8K6r5gTFOhLCqsjjv' .
'gPXXqLeJo5D1nV+c8BPIEVsu/bbBPgSqpDwUs2mX1WkEg5vfb7kZMC8+LHiRy+sItvIiTtxxEsQ/GEF/ono3hZrEnDa/C+' .
'4P3wep6uNMLnLzXJmUaAMaopjE+MOcai/t6T9Vg4pERF5Waqwg5ibAbVGK19HuS4LiKiaY3JsyYBuNkEDwiqM7i1Ekw3V+' .
'+zoEIxqgXjGgPdrWkzU/H6rnXiqMtiZZqUXwWY0zkCmy';
$asn1 = new File_ASN1();
$decoded = $asn1->decodeBER(base64_decode($str));
$result = $asn1->asn1map($decoded[0], $AS_REP);
$this->assertInternalType('array', $result);
}
/**
* on older versions of File_ASN1 this would produce a null instead of an array
* @group github275
*/
public function testIncorrectString()
{
$PA_DATA = array(
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => array(
'padata-type' => array(
'constant' => 1,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_INTEGER
),
'padata-value' => array(
'constant' => 2,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_OCTET_STRING
)
)
);
$PrincipalName = array(
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => array(
'name-type' => array(
'constant' => 0,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_INTEGER
),
'name-string' => array(
'constant' => 1,
'optional' => true,
'explicit' => true,
'min' => 0,
'max' => -1,
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => array('type' => FILE_ASN1_TYPE_IA5_STRING) // should be FILE_ASN1_TYPE_GENERAL_STRING
)
)
);
$Ticket = array(
'class' => FILE_ASN1_CLASS_APPLICATION,
'cast' => 1,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => array(
'tkt-vno' => array(
'constant' => 0,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_INTEGER
),
'realm' => array(
'constant' => 1,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY
),
'sname' => array(
'constant' => 2,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY
),
'enc-part' => array(
'constant' => 3,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY
)
)
);
$KDC_REP = array(
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => array(
'pvno' => array(
'constant' => 0,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_INTEGER),
'msg-type' => array(
'constant' => 1,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_INTEGER),
'padata' => array(
'constant' => 2,
'optional' => true,
'explicit' => true,
'min' => 0,
'max' => -1,
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => $PA_DATA),
'crealm' => array(
'constant' => 3,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_OCTET_STRING),
'cname' => array(
'constant' => 4,
'optional' => true,
'explicit' => true) + $PrincipalName,
//'type' => FILE_ASN1_TYPE_ANY),
'ticket' => array(
'constant' => 5,
'optional' => true,
'implicit' => true,
'min' => 0,
'max' => 1,
'type' => FILE_ASN1_TYPE_SEQUENCE,
'children' => $Ticket),
'enc-part' => array(
'constant' => 6,
'optional' => true,
'explicit' => true,
'type' => FILE_ASN1_TYPE_ANY)
)
);
$AS_REP = array(
'class' => FILE_ASN1_CLASS_APPLICATION,
'cast' => 11,
'optional' => true,
'explicit' => true
) + $KDC_REP;
$str = 'a4IC3jCCAtqgAwIBBaEDAgELoi8wLTAroQMCAROiJAQiMCAwHqADAgEXoRcbFUNSRUFUVUlUWS5ORVR0ZXN0dXNlcqMPGw' .
'1DUkVBVFVJVFkuTkVUpBUwE6ADAgEBoQwwChsIdGVzdHVzZXKlggFOYYIBSjCCAUagAwIBBaEPGw1DUkVBVFVJVFkuTkVU' .
'oiIwIKADAgECoRkwFxsGa3JidGd0Gw1DUkVBVFVJVFkuTkVUo4IBCDCCAQSgAwIBF6EDAgEBooH3BIH0AQlxgm/j4z74Ki' .
'GsJJnROhh8JAiN7pdvlnkxCYKdG6UgdfK/K0NZ+yz+Xg4kgFO1cQ4XYT4Fm3MTmOHzlFmbzlVkUqBI/RnWA9YTREC9Q7Mf' .
'PPYfRxRG/C6FlahxHCOKj9GUj7bXg7Oq3Sm+QsKTS2bZT05biNf1s7tPCkdIOO0AAd7hvTCpTNAKl+OLN4cpA6pwwk5c3h' .
'58Ce5/Uri5yBmrfwgkCD5AJUAI/WH56SEEvpifLc6C96w/7y2krAiZm5PyEO0HVhTzUjKGSHoSMb+Z3HI/ul+G9z0Z4qDu' .
'NjvgP0jKdrKiwWN00NjpiQ0byZd4y6aCASEwggEdoAMCAReiggEUBIIBEHyi8DIbdcfw2DpniBJ3Sh8dDaEbQx+gWx3omC' .
'TBEyts4sQGTwgQcqkWfeer8M+SkZs/GGZq2YYkyeF+9b6TxlYuX145NuB3KcyzaS7VNrX37E5nGgG8K6r5gTFOhLCqsjjv' .
'gPXXqLeJo5D1nV+c8BPIEVsu/bbBPgSqpDwUs2mX1WkEg5vfb7kZMC8+LHiRy+sItvIiTtxxEsQ/GEF/ono3hZrEnDa/C+' .
'4P3wep6uNMLnLzXJmUaAMaopjE+MOcai/t6T9Vg4pERF5Waqwg5ibAbVGK19HuS4LiKiaY3JsyYBuNkEDwiqM7i1Ekw3V+' .
'+zoEIxqgXjGgPdrWkzU/H6rnXiqMtiZZqUXwWY0zkCmy';
$asn1 = new File_ASN1();
$decoded = $asn1->decodeBER(base64_decode($str));
$result = $asn1->asn1map($decoded[0], $AS_REP);
$this->assertInternalType('array', $result);
}
}