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index.js
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270 lines (216 loc) · 7.13 KB
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'use strict'
var debug = require('debug')('httpsnippet')
var es = require('event-stream')
var MultiPartForm = require('form-data')
var qs = require('querystring')
var reducer = require('./helpers/reducer')
var targets = require('./targets')
var url = require('url')
var validate = require('har-validator/lib/async')
// constructor
var HTTPSnippet = function (data) {
var entries
var self = this
var input = Object.assign({}, data)
var boundary
// prep the main container
self.requests = []
// is it har?
if (input.log && input.log.entries) {
entries = input.log.entries
} else {
entries = [{
request: input
}]
}
entries.forEach(function (entry) {
// add optional properties to make validation successful
entry.request.httpVersion = entry.request.httpVersion || 'HTTP/1.1'
entry.request.queryString = entry.request.queryString || []
entry.request.headers = entry.request.headers || []
entry.request.cookies = entry.request.cookies || []
entry.request.postData = entry.request.postData || {}
entry.request.postData.mimeType = entry.request.postData.mimeType || 'application/octet-stream'
entry.request.bodySize = 0
entry.request.headersSize = 0
entry.request.postData.size = 0
validate.request(entry.request, function (err, valid) {
if (!valid) {
throw err
}
self.requests.push(self.prepare(entry.request))
})
})
}
HTTPSnippet.prototype._generateBoundary = function () {
var self = this
// This generates a 50 character boundary similar to those used by Firefox.
// They are optimized for boyer-moore parsing.
var boundary = '--------------------------';
for (var i = 0; i < 24; i++) {
boundary += Math.floor(Math.random() * 10).toString(16);
}
self._boundary = boundary;
}
HTTPSnippet.prototype.getBoundary = function () {
var self = this
if (!self._boundary) {
self._generateBoundary();
}
return self._boundary;
}
HTTPSnippet.prototype.prepare = function (request) {
var self = this
// construct utility properties
request.queryObj = {}
request.headersObj = {}
request.cookiesObj = {}
request.allHeaders = {}
request.postData.jsonObj = false
request.postData.paramsObj = false
// construct query objects
if (request.queryString && request.queryString.length) {
debug('queryString found, constructing queryString pair map')
request.queryObj = request.queryString.reduce(reducer, {})
}
// construct headers objects
if (request.headers && request.headers.length) {
// loweCase header keys
request.headersObj = request.headers.reduce(function (headers, header) {
headers[header.name.toLowerCase()] = header.value
return headers
}, {})
}
// construct headers objects
if (request.cookies && request.cookies.length) {
request.cookiesObj = request.cookies.reduceRight(function (cookies, cookie) {
cookies[cookie.name] = cookie.value
return cookies
}, {})
}
// construct Cookie header
var cookies = request.cookies.map(function (cookie) {
return encodeURIComponent(cookie.name) + '=' + encodeURIComponent(cookie.value)
})
if (cookies.length) {
request.allHeaders.cookie = cookies.join('; ')
}
switch (request.postData.mimeType) {
case 'multipart/mixed':
case 'multipart/related':
case 'multipart/form-data':
case 'multipart/alternative':
// reset values
request.postData.text = ''
request.postData.mimeType = 'multipart/form-data'
if (request.postData.params) {
var form = new MultiPartForm()
// easter egg
this._boundary = '---011000010111000001101001'
request.postData.params.forEach(function (param) {
form.append(param.name, param.value || '', {
filename: param.fileName || null,
contentType: param.contentType || null
})
})
// form.pipe(es.map(function (data, cb) {
// request.postData.text += data
// }))
request.postData.boundary = this.getBoundary()
request.headersObj['content-type'] = 'multipart/form-data; boundary=' + this.getBoundary()
}
break
case 'application/x-www-form-urlencoded':
if (!request.postData.params) {
request.postData.text = ''
} else {
request.postData.paramsObj = request.postData.params.reduce(reducer, {})
// always overwrite
request.postData.text = qs.stringify(request.postData.paramsObj)
}
break
case 'text/json':
case 'text/x-json':
case 'application/json':
case 'application/x-json':
request.postData.mimeType = 'application/json'
if (request.postData.text) {
try {
request.postData.jsonObj = JSON.parse(request.postData.text)
} catch (e) {
debug(e)
// force back to text/plain
// if headers have proper content-type value, then this should also work
request.postData.mimeType = 'text/plain'
}
}
break
}
// create allHeaders object
request.allHeaders = Object.assign(request.allHeaders, request.headersObj)
// deconstruct the uri
request.uriObj = url.parse(request.url, true, true)
// merge all possible queryString values
request.queryObj = Object.assign(request.queryObj, request.uriObj.query)
// reset uriObj values for a clean url
request.uriObj.query = null
request.uriObj.search = null
request.uriObj.path = request.uriObj.pathname
// keep the base url clean of queryString
request.url = url.format(request.uriObj)
// update the uri object
request.uriObj.query = request.queryObj
request.uriObj.search = qs.stringify(request.queryObj)
if (request.uriObj.search) {
request.uriObj.path = request.uriObj.pathname + '?' + request.uriObj.search
}
// construct a full url
request.fullUrl = url.format(request.uriObj)
return request
}
HTTPSnippet.prototype.convert = function (target, client, opts) {
if (!opts && client) {
opts = client
}
var func = this._matchTarget(target, client)
if (func) {
var results = this.requests.map(function (request) {
return func(request, opts)
})
return results.length === 1 ? results[0] : results
}
return false
}
HTTPSnippet.prototype._matchTarget = function (target, client) {
// does it exist?
if (!targets.hasOwnProperty(target)) {
return false
}
// shorthand
if (typeof client === 'string' && typeof targets[target][client] === 'function') {
return targets[target][client]
}
// default target
return targets[target][targets[target].info.default]
}
// exports
module.exports = HTTPSnippet
module.exports.availableTargets = function () {
return Object.keys(targets).map(function (key) {
var target = Object.assign({}, targets[key].info)
var clients = Object.keys(targets[key])
.filter(function (prop) {
return !~['info', 'index'].indexOf(prop)
})
.map(function (client) {
return targets[key][client].info
})
if (clients.length) {
target.clients = clients
}
return target
})
}
module.exports.extname = function (target) {
return targets[target] ? targets[target].info.extname : ''
}