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/* eslint-disable one-var, vars-on-top */
/* -- (c) Aaron Schulz 2009 */
( function () {
var showResults = function ( size, cidr ) {
$( '#mw-checkuser-cidr-res' ).val( cidr );
$( '#mw-checkuser-ipnote' ).text( size );
};
/**
* This function calculates the common range of a list of
* IPs. It should be set to update on keyUp.
*/
function updateCIDRresult() {
var form = document.getElementById( 'mw-checkuser-cidrform' );
if ( !form ) {
return; // no JS form
}
form.style.display = 'inline'; // unhide form (JS active)
var iplist = document.getElementById( 'mw-checkuser-iplist' );
if ( !iplist ) {
return; // no JS form
}
var text = iplist.value, ips;
// Each line should have one IP or range
if ( text.indexOf( '\n' ) !== -1 ) {
ips = text.split( '\n' );
// Try some other delimiters too...
} else if ( text.indexOf( '\t' ) !== -1 ) {
ips = text.split( '\t' );
} else if ( text.indexOf( ',' ) !== -1 ) {
ips = text.split( ',' );
} else if ( text.indexOf( ' - ' ) !== -1 ) {
ips = text.split( ' - ' );
} else if ( text.indexOf( '-' ) !== -1 ) {
ips = text.split( '-' );
} else if ( text.indexOf( ' ' ) !== -1 ) {
ips = text.split( ' ' );
} else {
ips = text.split( ';' );
}
var binPrefix = 0;
var prefixCidr = 0;
var prefix = '';
var foundV4 = false;
var foundV6 = false;
var ipCount;
var blocs;
// Go through each IP in the list, get its binary form, and
// track the largest binary prefix among them...
for ( var i = 0; i < ips.length; i++ ) {
// ...in the spirit of mediawiki.special.block.js, call this "addy"
var addy = ips[ i ].replace( /^\s*|\s*$/, '' ); // trim
// Match the first IP in each list (ignore other garbage)
var ipV4 = mw.util.isIPv4Address( addy, true );
var ipV6 = mw.util.isIPv6Address( addy, true );
var ipCidr = addy.match( /^(.*)(?:\/(\d+))?$/ );
// Binary form
var bin = '';
var x = 0, z = 0, start = 0, end = 0, ip, cidr, bloc, binBlock;
// Convert the IP to binary form: IPv4
if ( ipV4 ) {
foundV4 = true;
if ( foundV6 ) { // disjoint address space
prefix = '';
break;
}
ip = ipCidr[ 1 ];
cidr = ipCidr[ 2 ] ? ipCidr[ 2 ] : null; // CIDR, if it exists
// Get each quad integer
blocs = ip.split( '.' );
for ( x = 0; x < blocs.length; x++ ) {
bloc = parseInt( blocs[ x ], 10 );
binBlock = bloc.toString( 2 ); // concat bin with binary form of bloc
while ( binBlock.length < 8 ) {
binBlock = '0' + binBlock; // pad out as needed
}
bin += binBlock;
}
prefix = ''; // Rebuild formatted binPrefix for each IP
// Apply any valid CIDRs
if ( cidr ) {
bin = bin.substring( 0, cidr ); // truncate bin
}
// Init binPrefix
if ( binPrefix === 0 ) {
binPrefix = bin;
// Get largest common binPrefix
} else {
for ( x = 0; x < binPrefix.length; x++ ) {
// binPrefix always smaller than bin unless a CIDR was used on bin
if ( bin[ x ] === undefined || binPrefix[ x ] !== bin[ x ] ) {
binPrefix = binPrefix.substring( 0, x ); // shorten binPrefix
break;
}
}
}
// Build the IP in CIDR form
prefixCidr = binPrefix.length;
// CIDR too small?
if ( prefixCidr < 16 ) {
showResults( '!', '>' + Math.pow( 2, 32 - prefixCidr ) );
return; // too big
}
// Build the IP in dotted-quad form
for ( z = 0; z <= 3; z++ ) {
bloc = 0;
start = z * 8;
end = start + 7;
for ( x = start; x <= end; x++ ) {
if ( binPrefix[ x ] === undefined ) {
break;
}
bloc += parseInt( binPrefix[ x ], 10 ) * Math.pow( 2, end - x );
}
prefix += ( z === 3 ) ? bloc : bloc + '.';
}
// Get IPs affected
ipCount = Math.pow( 2, 32 - prefixCidr );
// Is the CIDR meaningful?
if ( prefixCidr === 32 ) {
prefixCidr = false;
}
// Convert the IP to binary form: IPv6
} else if ( ipV6 ) {
foundV6 = true;
if ( foundV4 ) { // disjoint address space
prefix = '';
break;
}
ip = ipCidr[ 1 ];
cidr = ipCidr[ 2 ] ? ipCidr[ 2 ] : null; // CIDR, if it exists
// Expand out "::"s
var abbrevs = ip.match( /::/g );
if ( abbrevs && abbrevs.length > 0 ) {
var colons = ip.match( /:/g );
var needed = 7 - ( colons.length - 2 ); // 2 from "::"
var insert = '';
while ( needed > 1 ) {
insert += ':0';
needed--;
}
ip = ip.replace( '::', insert + ':' );
// For IPs that start with "::", correct the final IP
// so that it starts with '0' and not ':'
if ( ip[ 0 ] === ':' ) {
ip = '0' + ip;
}
}
// Get each hex octant
blocs = ip.split( ':' );
for ( x = 0; x <= 7; x++ ) {
bloc = blocs[ x ] ? blocs[ x ] : '0';
var intBlock = parseInt( bloc, 16 ); // convert hex -> int
binBlock = intBlock.toString( 2 ); // concat bin with binary form of bloc
while ( binBlock.length < 16 ) {
binBlock = '0' + binBlock; // pad out as needed
}
bin += binBlock;
}
prefix = ''; // Rebuild formatted binPrefix for each IP
// Apply any valid CIDRs
if ( cidr ) {
bin = bin.substring( 0, cidr ); // truncate bin
}
// Init binPrefix
if ( binPrefix === 0 ) {
binPrefix = bin;
// Get largest common binPrefix
} else {
for ( x = 0; x < binPrefix.length; x++ ) {
// binPrefix always smaller than bin unless a CIDR was used on bin
if ( bin[ x ] === undefined || binPrefix[ x ] !== bin[ x ] ) {
binPrefix = binPrefix.substring( 0, x ); // shorten binPrefix
break;
}
}
}
// Build the IP in CIDR form
prefixCidr = binPrefix.length;
// CIDR too small?
if ( prefixCidr < 32 ) {
showResults( '!', '>' + Math.pow( 2, 128 - prefixCidr ) );
return; // too big
}
// Build the IP in dotted-quad form
for ( z = 0; z <= 7; z++ ) {
bloc = 0;
start = z * 16;
end = start + 15;
for ( x = start; x <= end; x++ ) {
if ( binPrefix[ x ] === undefined ) {
break;
}
bloc += parseInt( binPrefix[ x ], 10 ) * Math.pow( 2, end - x );
}
bloc = bloc.toString( 16 ); // convert to hex
prefix += ( z === 7 ) ? bloc : bloc + ':';
}
// Get IPs affected
ipCount = Math.pow( 2, 128 - prefixCidr );
// Is the CIDR meaningful?
if ( prefixCidr === 128 ) {
prefixCidr = false;
}
}
}
// Update form
if ( prefix !== '' ) {
var full = prefix;
if ( prefixCidr !== false ) {
full += '/' + prefixCidr;
}
showResults( '~' + ipCount, full );
} else {
showResults( '?', '' );
}
}
$( function () {
updateCIDRresult();
$( '#mw-checkuser-iplist' ).on( 'keyup click', function () {
updateCIDRresult();
} );
} );
}() );
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GitWeb