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cidr.js
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cidr.js
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/* -- (c) Aaron Schulz 2009 */
( function () {
const showResults = function ( size, cidr, $form, hasCheckUserRight, hasCheckUserLogRight ) {
if ( cidr.toString() === '!' ) {
cidr = mw.message( 'checkuser-cidr-too-small' ).text();
}
$( '.mw-checkuser-cidr-res input', $form ).val( cidr );
if ( mw.util.isIPAddress( cidr, true ) ) {
$( '.mw-checkuser-cidr-tool-links', $form ).removeClass( 'mw-checkuser-cidr-tool-links-hidden' );
$( '.mw-checkuser-cidr-tool-links', $form ).html(
mw.message( 'checkuser-cidr-tool-links', cidr ).parse()
);
if ( !hasCheckUserRight ) {
$( '.mw-checkuser-cidr-checkuser-only' ).addClass( 'mw-checkuser-cidr-tool-links-hidden' );
}
if ( !hasCheckUserLogRight ) {
$( '.mw-checkuser-cidr-checkuserlog-only' ).addClass( 'mw-checkuser-cidr-tool-links-hidden' );
}
} else {
$( '.mw-checkuser-cidr-tool-links', $form ).addClass( 'mw-checkuser-cidr-tool-links-hidden' );
}
$( '.mw-checkuser-cidr-ipnote', $form ).text(
mw.message( 'checkuser-cidr-affected-ips' ).text() + ' ' + size.toLocaleString()
);
};
/**
* Get and return the IPs from the input as an array of IPs
*
* @param {jQuery} $form The form to collect the IPs from
* @return {string[]}
*/
function getIPList( $form ) {
const $iplist = $( '.mw-checkuser-cidr-iplist textarea', $form );
if ( !$iplist ) {
// No IP list, so return empty array
return [];
}
const text = $iplist.val();
const delimiters = [ '\n', '\t', ',', ' - ', '-', ' ', ';' ];
for ( const i in delimiters ) {
// If the delimiter is present in the IPs list, use it
// to split into a list of IPs.
if ( text.indexOf( delimiters[ i ] ) !== -1 ) {
const ips = text.split( delimiters[ i ] );
for ( const j in ips ) {
// Trim to remove excess whitespace.
ips[ j ] = ips[ j ].trim();
}
return ips;
}
}
// If no delimiter was present, then assume only one IP.
return [ text.trim() ];
}
/**
* This function calculates the common range of a list of
* IPs. It should be set to update on keyUp.
*
* @param {jQuery} $form JQuery element for the form that is being updated
* @param {boolean} hasCheckUserRight Whether the user has the right to see Special:CheckUser
* @param {boolean} hasCheckUserLogRight Whether the user has the right to see Special:CheckUser
*/
function updateCIDRresult( $form, hasCheckUserRight, hasCheckUserLogRight ) {
if ( !$form ) {
return; // no JS form
}
$form.removeClass( 'mw-checkuser-cidr-calculator-hidden' );
const ips = getIPList( $form );
if ( ips.length === 0 ) {
return;
}
let binPrefix = 0;
let prefixCidr = 0;
let prefix = '';
let foundV4 = false;
let foundV6 = false;
let ipCount;
let blocs;
// Go through each IP in the list, get its binary form, and
// track the largest binary prefix among them...
for ( let i = 0; i < ips.length; i++ ) {
// ...in the spirit of mediawiki.special.block.js, call this "addy"
const addy = ips[ i ];
// Match the first IP in each list (ignore other garbage)
const ipV4 = mw.util.isIPv4Address( addy, true );
const ipV6 = mw.util.isIPv6Address( addy, true );
const ipCidr = addy.split( '/' );
// Binary form
let bin = '';
let 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[ 0 ];
cidr = ipCidr[ 1 ]; // CIDR if it exists, or undefined
// 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.slice( 0, Math.max( 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.slice( 0, Math.max( 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 ).toLocaleString(), '!', $form, hasCheckUserRight, hasCheckUserLogRight );
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[ 0 ];
cidr = ipCidr[ 1 ]; // CIDR if it exists, or undefined
// Expand out "::"s
const abbrevs = ip.match( /::/g );
if ( abbrevs && abbrevs.length > 0 ) {
const colons = ip.match( /:/g );
let needed = 7 - ( colons.length - 2 ); // 2 from "::"
let 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';
const 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.slice( 0, Math.max( 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.slice( 0, Math.max( 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 ).toLocaleString(), '!', $form, hasCheckUserRight, hasCheckUserLogRight );
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 !== '' ) {
let full = prefix;
if ( prefixCidr !== false ) {
full += '/' + prefixCidr;
}
showResults( '~' + ipCount.toLocaleString(), full, $form, hasCheckUserRight, hasCheckUserLogRight );
} else {
showResults( '?', '', $form, hasCheckUserRight, hasCheckUserLogRight );
}
}
$( () => {
mw.user.getRights( ( rights ) => {
const hasCheckUserRight = rights.indexOf( 'checkuser' ) !== -1;
const hasCheckUserLogRight = rights.indexOf( 'checkuser-log' ) !== -1;
$( '.mw-checkuser-cidrform' ).each( ( index, form ) => {
updateCIDRresult( $( form ), hasCheckUserRight, hasCheckUserLogRight );
} );
$( '.mw-checkuser-cidr-iplist textarea' ).on( 'keyup click', function () {
const $form = $( this ).closest( '.mw-checkuser-cidrform' );
updateCIDRresult( $form, hasCheckUserRight, hasCheckUserLogRight );
} );
} );
} );
}() );

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Tue, Aug 18, 22:44 (7 h, 33 m ago)
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cidr.js (8 KB)

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