Current File : //usr/lib/node_modules/npm/node_modules/request/lib/getProxyFromURI.js
'use strict'
function formatHostname (hostname) {
// canonicalize the hostname, so that 'oogle.com' won't match 'google.com'
return hostname.replace(/^\.*/, '.').toLowerCase()
}
function parseNoProxyZone (zone) {
zone = zone.trim().toLowerCase()
var zoneParts = zone.split(':', 2)
var zoneHost = formatHostname(zoneParts[0])
var zonePort = zoneParts[1]
var hasPort = zone.indexOf(':') > -1
return {hostname: zoneHost, port: zonePort, hasPort: hasPort}
}
function uriInNoProxy (uri, noProxy) {
var port = uri.port || (uri.protocol === 'https:' ? '443' : '80')
var hostname = formatHostname(uri.hostname)
var noProxyList = noProxy.split(',')
// iterate through the noProxyList until it finds a match.
return noProxyList.map(parseNoProxyZone).some(function (noProxyZone) {
var isMatchedAt = hostname.indexOf(noProxyZone.hostname)
var hostnameMatched = (
isMatchedAt > -1 &&
(isMatchedAt === hostname.length - noProxyZone.hostname.length)
)
if (noProxyZone.hasPort) {
return (port === noProxyZone.port) && hostnameMatched
}
return hostnameMatched
})
}
function getProxyFromURI (uri) {
// Decide the proper request proxy to use based on the request URI object and the
// environmental variables (NO_PROXY, HTTP_PROXY, etc.)
// respect NO_PROXY environment variables (see: http://lynx.isc.org/current/breakout/lynx_help/keystrokes/environments.html)
var noProxy = process.env.NO_PROXY || process.env.no_proxy || ''
// if the noProxy is a wildcard then return null
if (noProxy === '*') {
return null
}
// if the noProxy is not empty and the uri is found return null
if (noProxy !== '' && uriInNoProxy(uri, noProxy)) {
return null
}
// Check for HTTP or HTTPS Proxy in environment Else default to null
if (uri.protocol === 'http:') {
return process.env.HTTP_PROXY ||
process.env.http_proxy || null
}
if (uri.protocol === 'https:') {
return process.env.HTTPS_PROXY ||
process.env.https_proxy ||
process.env.HTTP_PROXY ||
process.env.http_proxy || null
}
// if none of that works, return null
// (What uri protocol are you using then?)
return null
}
module.exports = getProxyFromURI
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