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Use window.crypto for uuid4 if present #349

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Merged
merged 2 commits into from
Jun 29, 2015
Merged

Use window.crypto for uuid4 if present #349

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5903b39
Use window.crypto for uuid4 if present
matteosimone Jun 18, 2015
757657c
Use isUndefined to check for crypto
matteosimone Jun 18, 2015
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36 changes: 30 additions & 6 deletions src/raven.js
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Original file line number Diff line number Diff line change
Expand Up @@ -805,13 +805,37 @@ function joinRegExp(patterns) {
return new RegExp(sources.join('|'), 'i');
}

// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/2117523#2117523
function uuid4() {
return 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = Math.random()*16|0,
v = c == 'x' ? r : (r&0x3|0x8);
return v.toString(16);
});
var crypto = window.crypto || window.msCrypto;

if (!isUndefined(crypto) && crypto.getRandomValues) {
// Use window.crypto API if available
var arr = new Uint16Array(8);
crypto.getRandomValues(arr);

// set 4 in byte 7
arr[3] = arr[3] & 0xFFF | 0x4000;
// set 2 most significant bits of byte 9 to '10'
arr[4] = arr[4] & 0x3FFF | 0x8000;

var pad = function(num) {
var v = num.toString(16);
while (v.length < 4) {
v = '0' + v;
}
return v;
};

return (pad(arr[0]) + pad(arr[1]) + pad(arr[2]) + pad(arr[3]) + pad(arr[4]) +
pad(arr[5]) + pad(arr[6]) + pad(arr[7]));
} else {
// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/2117523#2117523
return 'xxxxxxxxxxxx4xxxyxxxxxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
var r = Math.random()*16|0,
v = c == 'x' ? r : (r&0x3|0x8);
return v.toString(16);
});
}
}

function logDebug(level, message) {
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