Mtaowner: Created page with "{{Useful Function}} NOTOC This function calculates a fingerprint unique to each computer. ==Syntax== void fingerprint ( function callback ) ===Required arguments=== *'''callback''': a callback function with syntax as described below ====Callback syntax==== function ( int value ) ==Code==
func..."

2023-11-21T14:31:08Z

Created page with "{{Useful Function}} __NOTOC__ This function calculates a fingerprint unique to each computer. ==Syntax== <syntaxhighlight lang="lua"> void fingerprint ( function callback ) </syntaxhighlight> ===Required arguments=== *'''callback''': a callback function with syntax as described below ====Callback syntax==== <syntaxhighlight lang="lua"> function ( int value ) </syntaxhighlight> ==Code== <section name="Code" class="client" show="true"> <syntaxhighlight lang="lua"> func..."

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{{Useful Function}}
__NOTOC__
This function calculates a fingerprint unique to each computer.

==Syntax==
<syntaxhighlight lang="lua">
void fingerprint ( function callback )
</syntaxhighlight>

===Required arguments===
*'''callback''': a callback function with syntax as described below

====Callback syntax====
<syntaxhighlight lang="lua">
function ( int value )
</syntaxhighlight>

==Code==
<section name="Code" class="client" show="true">
<syntaxhighlight lang="lua">
function fingerprint(callback)
assert(type(callback) == 'function', 'Bad argument @ fingerprint [Expected function at argument 1, got '..type(callback)..']')
local browser = createBrowser(1, 1, true, true)
addEventHandler('onClientBrowserDocumentReady', browser, function()
local num = tonumber(getBrowserTitle(browser) or 0) or 0
destroyElement(browser)
callback(num)
end)
addEventHandler('onClientBrowserLoadingFailed', browser, function()
destroyElement(browser)
callback(0)
end)
addEventHandler('onClientBrowserCreated', browser, function()
loadBrowserURL(browser, 'http://mta/local/')
executeBrowserJavascript(browser, [[for(canvas=document.createElement("canvas"),ctx=canvas.getContext("2d"),txt="i9asdm..$#po((^@KbXrww!~cz",ctx.textBaseline="top",ctx.font="16px 'Arial'",ctx.textBaseline="alphabetic",ctx.rotate(.05),ctx.fillStyle="#f60",ctx.fillRect(125,1,62,20),ctx.fillStyle="#069",ctx.fillText(txt,2,15),ctx.fillStyle="rgba(102, 200, 0, 0.7)",ctx.fillText(txt,4,17),ctx.shadowBlur=10,ctx.shadowColor="blue",ctx.fillRect(-20,10,234,5),ctx.fillStyle="rgb(255,0,253)",ctx.beginPath(),ctx.rect(20.00000000000001,20.9999999999899,151.50000158115816,100.5445545401),ctx.fill(),ctx.stroke(),ctx.closePath(),ctx.beginPath(),ctx.fillStyle="rgb(0,254.66666666666,255)",ctx.arc(50.87401107072145,50.74810746,50.01010101,0,.1111111*Math.PI,!0),ctx.fill(),ctx.stroke(),ctx.closePath(),txt="abz190#$%^@£éú",ctx.textBaseline="top",ctx.font='17px "Arial 17"',ctx.textBaseline="alphabetic",ctx.fillStyle="rgb(255,5.5555555,5)",ctx.rotate(.03),ctx.fillText(txt,4,17),ctx.fillStyle="rgb(155,255,5)",ctx.shadowBlur=8,ctx.shadowColor="red",ctx.fillRect(20,12.987654321,100.123456789,5),src=canvas.toDataURL(),hash=0,i=0;i<src.length;i++)char=src.charCodeAt(i),hash=(hash<<5)-hash+char,hash&=hash;document.title=hash;]])
end)
end
</syntaxhighlight>
</section>

==Example==
<section name="Example" class="client" show="true">
<syntaxhighlight lang="lua">
addEventHandler('onClientResourceStart', resourceRoot, function()
fingerprint(function(num)
outputChatBox('fingerprint: '..num)
setElementData(localPlayer, 'fingerprint', num)
end)
end, false)
</syntaxhighlight>
</section>

==See Also==
{{Useful_Functions}}

Fingerprint - Revision history