Moved Chrome extension scripts to buildtools repository

packagerChrome.py

Index: packagerChrome.py
===================================================================
new file mode 100644
--- /dev/null
+++ b/packagerChrome.py
@@ -0,0 +1,166 @@
+# coding: utf-8
+
+# This Source Code is subject to the terms of the Mozilla Public License
+# version 2.0 (the "License"). You can obtain a copy of the License at
+# http://mozilla.org/MPL/2.0/.
+
+import sys, os, subprocess, re, json, codecs, struct
+from ConfigParser import SafeConfigParser
+from StringIO import StringIO
+from zipfile import ZipFile, ZIP_DEFLATED
+
+defaultLocale = 'en_US'
+
+def getDefaultFileName(baseDir, metadata, version, ext):
+  return os.path.join(baseDir, '%s-%s.%s' % (metadata.get('general', 'baseName'), version, ext))
+
+def getMetadataPath(baseDir):
+  return os.path.join(baseDir, 'metadata')
+
+def getBuildNum(baseDir):
+  try:
+    (result, dummy) = subprocess.Popen(['hg', 'id', '-n'], stdout=subprocess.PIPE).communicate()
+    return re.sub(r'\D', '', result)
+  except Exception:
+    return '0'
+
+def readMetadata(baseDir):
+  metadata = SafeConfigParser()
+  file = codecs.open(getMetadataPath(baseDir), 'rb', encoding='utf-8')
+  metadata.readfp(file)
+  file.close()
+  return metadata
+
+def readVersion(baseDir):
+  file = open(os.path.join(baseDir, 'manifest.json'))
+  data = json.load(file)
+  file.close()
+  return data['version']
+
+def setUpdateURL(updateName, zip, dir, fileName, fileData):
+  if fileName == 'manifest.json':
+    data = json.loads(fileData)
+    data['update_url'] = 'https://adblockplus.org/devbuilds/%s/updates.xml' % updateName
+    return json.dumps(data, sort_keys=True, indent=2)

[Felix Dahlke, 2013/01/10 16:36:20]

Pretty much the same line is repeated a few times below. Maybe it makes sense to
put this in a function?

[Wladimir Palant, 2013/01/16 14:20:15]

Actually, it's four occasions and only two are really identical (both change
locale files).

There is nothing special about these JSON parameters - I merely chose them
because they are readable. In fact, the parameters are slightly different in all
other cases (e.g. localeTools use ensure_ascii=False which isn't important here
and after downloading we remove the space after commas which also isn't
important in all the other scenarios). Frankly, I don't really see much value in
unifying this.

+  return fileData
+
+def setExperimentalSettings(zip, dir, fileName, fileData):
+  if fileName == 'manifest.json':
+    data = json.loads(fileData)
+    data['permissions'] += ['experimental']
+    data['name'] += ' experimental build'
+    return json.dumps(data, sort_keys=True, indent=2)
+  return fileData
+
+def addBuildNumber(revision, zip, dir, fileName, fileData):
+  if fileName == 'manifest.json':
+    if len(revision) > 0:
+      data = json.loads(fileData)
+      while data['version'].count('.') < 2:
+        data['version'] += '.0'
+      data['version'] += '.' + revision
+      return json.dumps(data, sort_keys=True, indent=2)
+  return fileData
+
+def mergeContentScripts(zip, dir, fileName, fileData):
+  if fileName == 'manifest.json':
+    data = json.loads(fileData)
+    if 'content_scripts' in data:
+      scriptIndex = 1
+      for contentScript in data['content_scripts']:
+        if 'js' in contentScript:
+          scriptData = ''
+          for scriptFile in contentScript['js']:
+            parts = [dir] + scriptFile.split('/')
+            scriptPath = os.path.join(*parts)
+            handle = open(scriptPath, 'rb')
+            scriptData += handle.read()
+            handle.close()
+          contentScript['js'] = ['contentScript' + str(scriptIndex) + '.js']
+          zip.writestr('contentScript' + str(scriptIndex) + '.js', scriptData)
+          scriptIndex += 1
+    return json.dumps(data, sort_keys=True, indent=2)
+  return fileData
+
+def addToZip(zip, filters, dir, baseName):
+  for file in os.listdir(dir):
+    filelc = file.lower()
+    if (file.startswith('.') or
+        file == 'buildtools' or file == 'qunit' or file == 'metadata' or

[Felix Dahlke, 2013/01/10 16:36:20]

How about this instead?

file in ['buildtools', 'qunit', 'metadata']

[Wladimir Palant, 2013/01/16 14:20:15]

This code has been replaced by a whitelist approach by now, it's much more
concise now. You can see it in function getPackageFiles().

+        filelc.endswith('.py') or filelc.endswith('.pyc') or

[Felix Dahlke, 2013/01/10 16:36:20]

How about using a regex here? Definitely more concise:

re.match(r".*\.(py|pyc|crx|zip|sh|bat|txt)$", filelc)

[Wladimir Palant, 2013/01/16 14:20:15]

See above.

+        filelc.endswith('.crx') or filelc.endswith('.zip') or
+        filelc.endswith('.sh') or filelc.endswith('.bat') or
+        filelc.endswith('.txt')):
+      # skip special files, scripts, existing archives
+      continue
+    if file.startswith('include.'):
+      # skip includes, they will be added by other means
+      continue
+
+    filePath = os.path.join(dir, file)
+    if os.path.isdir(filePath):
+      addToZip(zip, filters, filePath, baseName + file + '/')
+    else:
+      handle = open(filePath, 'rb')
+      fileData = handle.read()
+      handle.close()
+
+      for filter in filters:
+        fileData = filter(zip, dir, baseName + file, fileData)
+      zip.writestr(baseName + file, fileData)
+
+def packDirectory(dir, filters):
+  buffer = StringIO()
+  zip = ZipFile(buffer, 'w', ZIP_DEFLATED)
+  addToZip(zip, filters, dir, '')
+  zip.close()
+  return buffer.getvalue()
+
+def signBinary(zipdata, keyFile):
+  import M2Crypto
+  if not os.path.exists(keyFile):
+    M2Crypto.RSA.gen_key(1024, 65537, callback=lambda x: None).save_key(keyFile, cipher=None)
+  key = M2Crypto.EVP.load_key(keyFile)
+  key.sign_init()
+  key.sign_update(zipdata)
+  return key.final()
+
+def getPublicKey(keyFile):
+  import M2Crypto
+  return M2Crypto.EVP.load_key(keyFile).as_der()
+
+def writePackage(outputFile, pubkey, signature, zipdata):
+  file = open(outputFile, 'wb')
+  if pubkey != None and signature != None:
+    file.write(struct.pack('<4sIII', 'Cr24', 2, len(pubkey), len(signature)))
+    file.write(pubkey)
+    file.write(signature)
+  file.write(zipdata)
+  file.close()
+
+def createBuild(baseDir, outFile=None, buildNum=None, releaseBuild=False, keyFile=None, experimentalAPI=False):
+  metadata = readMetadata(baseDir)
+  version = readVersion(baseDir)
+  if outFile == None:
+    outFile = getDefaultFileName(baseDir, metadata, version, 'crx' if keyFile else 'zip')
+
+  filters = []
+  if not releaseBuild:
+    if buildNum == None:
+      buildNum = getBuildNum(baseDir)
+    filters.append(lambda zip, dir, fileName, fileData: addBuildNumber(buildNum, zip, dir, fileName, fileData))
+
+    baseName = metadata.get('general', 'baseName')
+    updateName = baseName + '-experimental' if experimentalAPI else baseName
+    filters.append(lambda zip, dir, fileName, fileData: setUpdateURL(updateName, zip, dir, fileName, fileData))
+    if experimentalAPI:
+      filters.append(setExperimentalSettings)
+  filters.append(mergeContentScripts)
+
+  zipdata = packDirectory(baseDir, filters)
+  signature = None
+  pubkey = None
+  if keyFile != None:
+    signature = signBinary(zipdata, keyFile)
+    pubkey = getPublicKey(keyFile)
+  writePackage(outFile, pubkey, signature, zipdata)