Dan Finlay
7 years ago
commit
f8cadbcb32
@ -1,13 +1,41 @@ |
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const blacklistedDomains = require('etheraddresslookup/blacklists/domains.json') |
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const levenshtein = require('fast-levenshtein') |
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const blacklistedMetaMaskDomains = ['metamask.com'] |
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const blacklistedDomains = require('etheraddresslookup/blacklists/domains.json').concat(blacklistedMetaMaskDomains) |
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const whitelistedMetaMaskDomains = ['metamask.io', 'www.metamask.io'] |
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const whitelistedDomains = require('etheraddresslookup/whitelists/domains.json').concat(whitelistedMetaMaskDomains) |
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const LEVENSHTEIN_TOLERANCE = 4 |
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const LEVENSHTEIN_CHECKS = ['myetherwallet', 'myetheroll', 'ledgerwallet', 'metamask'] |
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|
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function detectBlacklistedDomain() { |
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var strCurrentTab = window.location.hostname |
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if (blacklistedDomains && blacklistedDomains.includes(strCurrentTab)) { |
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window.location.href = 'https://metamask.io/phishing.html' |
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} |
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|
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// credit to @sogoiii and @409H for their help!
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// Return a boolean on whether or not a phish is detected.
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function isPhish(hostname) { |
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var strCurrentTab = hostname |
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// check if the domain is part of the whitelist.
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if (whitelistedDomains && whitelistedDomains.includes(strCurrentTab)) { return false } |
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// check if the domain is part of the blacklist.
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var isBlacklisted = blacklistedDomains && blacklistedDomains.includes(strCurrentTab) |
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// check for similar values.
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var levenshteinMatched = false |
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var levenshteinForm = strCurrentTab.replace(/\./g, '') |
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LEVENSHTEIN_CHECKS.forEach((element) => { |
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if (levenshtein.get(element, levenshteinForm) < LEVENSHTEIN_TOLERANCE) { |
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levenshteinMatched = true |
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} |
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}) |
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return isBlacklisted || levenshteinMatched |
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} |
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window.addEventListener('load', function() { |
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detectBlacklistedDomain() |
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window.addEventListener('load', function () { |
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var hostnameToCheck = window.location.hostname |
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if (isPhish(hostnameToCheck)) { |
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// redirect to our phishing warning page.
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window.location.href = 'https://metamask.io/phishing.html' |
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} |
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}) |
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module.exports = isPhish |
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@ -0,0 +1,8 @@ |
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module.exports = { |
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getStack, |
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} |
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function getStack () { |
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const stack = new Error('Stack trace generator - not an error').stack |
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return stack |
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} |
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@ -0,0 +1,24 @@ |
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const assert = require('assert') |
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const Blacklister = require('../../app/scripts/blacklister') |
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describe('blacklister', function () { |
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describe('#isPhish', function () { |
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it('should not flag whitelisted values', function () { |
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var result = Blacklister('www.metamask.io') |
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assert(!result) |
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}) |
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it('should flag explicit values', function () { |
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var result = Blacklister('metamask.com') |
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assert(result) |
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}) |
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it('should flag levenshtein values', function () { |
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var result = Blacklister('metmask.io') |
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assert(result) |
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}) |
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it('should not flag not-even-close values', function () { |
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var result = Blacklister('example.com') |
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assert(!result) |
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}) |
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}) |
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}) |
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