HTTP Archive 1.2 support

README.md

@@ -726,6 +726,9 @@ The first argument can be either a `url` or an `options` object. The only requir
 
 - `time` - If `true`, the request-response cycle (including all redirects) is timed at millisecond resolution, and the result provided on the response's `elapsedTime` property.
 
+---
+
+- `har` - A [HAR 1.2 Request Object](http://www.softwareishard.com/blog/har-12-spec/#request), will be processed from HAR format into options overwriting matching values *(see example below for details)*
 
 The callback argument gets 3 arguments:
 
@@ -738,6 +741,49 @@ The callback argument gets 3 arguments:
 
 ---
 
+## Support for HAR 1.2
+
+The `options.har` property will override the values: `url`, `method`, `qs`, `headers`, `form`, `formData`, `body`, `json`, as well as construct multipart data and read files from disk when `request.postData.params[].fileName` is present without a matching `value`.
+
+a validation step will check if the HAR Request format matches the latest spec (v1.2) and will skip parsing if not matching.
+
+```js
+  var request = require('request')
+  request({
+    // will be ignored
+    method: 'GET'
+    uri: 'http://www.google.com',
+
+    // HTTP Archive Request Object
+    har: {
+      url: 'http://www.mockbin.com/har'
+      method: 'POST',
+      headers: [
+        {
+          name: 'content-type',
+          value: 'application/x-www-form-urlencoded'
+        }
+      ],
+      postData: {
+        mimeType: 'application/x-www-form-urlencoded',
+        params: [
+          {
+            name: 'foo',
+            value: 'bar'
+          },
+          {
+            name: 'hello',
+            value: 'world'
+          }
+        ]
+      }
+    }
+  })
+
+  // a POST request will be sent to http://www.mockbin.com
+  // with body an application/x-www-form-urlencoded body:
+  // foo=bar&hello=world
+```
 
 ## Convenience methods
 

lib/har.js

@@ -0,0 +1,205 @@
+'use strict'
+
+var fs = require('fs')
+var qs = require('querystring')
+var validate = require('har-validator')
+var util = require('util')
+
+function Har (request) {
+  this.request = request
+}
+
+Har.prototype.reducer = function (obj, pair) {
+  // new property ?
+  if (obj[pair.name] === undefined) {
+    obj[pair.name] = pair.value
+    return obj
+  }
+
+  // existing? convert to array
+  var arr = [
+    obj[pair.name],
+    pair.value
+  ]
+
+  obj[pair.name] = arr
+
+  return obj
+}
+
+Har.prototype.prep = function (data) {
+  // construct utility properties
+  data.queryObj = {}
+  data.headersObj = {}
+  data.postData.jsonObj = false
+  data.postData.paramsObj = false
+
+  // construct query objects
+  if (data.queryString && data.queryString.length) {
+    data.queryObj = data.queryString.reduce(this.reducer, {})
+  }
+
+  // construct headers objects
+  if (data.headers && data.headers.length) {
+    // loweCase header keys
+    data.headersObj = data.headers.reduceRight(function (headers, header) {
+      headers[header.name] = header.value
+      return headers
+    }, {})
+  }
+
+  // construct Cookie heade
+  if (data.cookies && data.cookies.length) {
+    var cookies = data.cookies.map(function (cookie) {
+      return cookie.name + '=' + cookie.value
+    })
+
+    if (cookies.length) {
+      data.headersObj.cookie = cookies.join('; ')
+    }
+  }
+
+  // prep body
+  switch (data.postData.mimeType) {
+    case 'multipart/mixed':
+    case 'multipart/related':
+    case 'multipart/form-data':
+    case 'multipart/alternative':
+      // reset values
+      data.postData.mimeType = 'multipart/form-data'
+      break
+
+    case 'application/x-www-form-urlencoded':
+      if (!data.postData.params) {
+        data.postData.text = ''
+      } else {
+        data.postData.paramsObj = data.postData.params.reduce(this.reducer, {})
+
+        // always overwrite
+        data.postData.text = qs.stringify(data.postData.paramsObj)
+      }
+      break
+
+    case 'text/json':
+    case 'text/x-json':
+    case 'application/json':
+    case 'application/x-json':
+      data.postData.mimeType = 'application/json'
+
+      if (data.postData.text) {
+        try {
+          data.postData.jsonObj = JSON.parse(data.postData.text)
+        } catch (e) {
+          this.request.debug(e)
+
+          // force back to text/plain
+          data.postData.mimeType = 'text/plain'
+        }
+      }
+      break
+  }
+
+  return data
+}
+
+Har.prototype.options = function (options) {
+  // skip if no har property defined
+  if (!options.har) {
+    return options
+  }
+
+  var har = util._extend({}, options.har)
+
+  // only process the first entry
+  if (har.log && har.log.entries) {
+    har = har.log.entries[0]
+  }
+
+  // add optional properties to make validation successful
+  har.url = har.url || options.url || options.uri || options.baseUrl || '/'
+  har.httpVersion = har.httpVersion || 'HTTP/1.1'
+  har.queryString = har.queryString || []
+  har.headers = har.headers || []
+  har.cookies = har.cookies || []
+  har.postData = har.postData || {}
+  har.postData.mimeType = har.postData.mimeType || 'application/octet-stream'
+
+  har.bodySize = 0
+  har.headersSize = 0
+  har.postData.size = 0
+
+  if (!validate.request(har)) {
+    return options
+  }
+
+  // clean up and get some utility properties
+  var req = this.prep(har)
+
+  // construct new options
+  if (req.url) {
+    options.url = req.url
+  }
+
+  if (req.method) {
+    options.method = req.method
+  }
+
+  if (Object.keys(req.queryObj).length) {
+    options.qs = req.queryObj
+  }
+
+  if (Object.keys(req.headersObj).length) {
+    options.headers = req.headersObj
+  }
+
+  switch (req.postData.mimeType) {
+    case 'application/x-www-form-urlencoded':
+      options.form = req.postData.paramsObj
+      break
+
+    case 'application/json':
+      if (req.postData.jsonObj) {
+        options.body = req.postData.jsonObj
+        options.json = true
+      }
+      break
+
+    case 'multipart/form-data':
+      options.formData = {}
+
+      req.postData.params.forEach(function (param) {
+        var attachement = {}
+
+        if (!param.fileName && !param.fileName && !param.contentType) {
+          options.formData[param.name] = param.value
+          return
+        }
+
+        // attempt to read from disk!
+        if (param.fileName && !param.value) {
+          attachement.value = fs.createReadStream(param.fileName)
+        } else if (param.value) {
+          attachement.value = param.value
+        }
+
+        if (param.fileName) {
+          attachement.options = {
+            filename: param.fileName,
+            contentType: param.contentType ? param.contentType : null
+          }
+        }
+
+        options.formData[param.name] = attachement
+      })
+      break
+
+    default:
+      if (req.postData.text) {
+        options.body = req.postData.text
+      }
+  }
+
+  return options
+}
+
+exports.Har = Har

package.json

@@ -38,7 +38,8 @@
     "aws-sign2": "~0.5.0",
     "stringstream": "~0.0.4",
     "combined-stream": "~0.0.5",
-    "isstream": "~0.1.1"
+    "isstream": "~0.1.1",
+    "har-validator": "^1.4.0"
   },
   "scripts": {
     "test": "npm run lint && node node_modules/.bin/taper tests/test-*.js && npm run test-browser",

request.js

@@ -22,6 +22,7 @@ var http = require('http')
   , cookies = require('./lib/cookies')
   , copy = require('./lib/copy')
   , getProxyFromURI = require('./lib/getProxyFromURI')
+  , Har = require('./lib/har').Har
   , Auth = require('./lib/auth').Auth
   , OAuth = require('./lib/oauth').OAuth
   , Multipart = require('./lib/multipart').Multipart
@@ -244,6 +245,13 @@ function Request (options) {
   // call init
 
   var self = this
+
+  // start with HAR, then override with additional options
+  if (options.har) {
+    self._har = new Har(self)
+    options = self._har.options(options)
+  }
+
   stream.Stream.call(self)
   var reserved = Object.keys(Request.prototype)
   var nonReserved = filterForNonReserved(reserved, options)