From: root <root@uhweb28124.united-hoster.com>
Date: Thu, 5 Jun 2008 22:09:54 +0000 (+0200)
Subject: Imported the download handler for the source code.
X-Git-Url: http://git.ipfire.org/?p=ipfire.org.git;a=commitdiff_plain;h=818a4490b2beb1622c67a5d50415410ac54d0c11;hp=2ab843d6aaeafe62d4cf824de926e189bcb4b4e5;ds=sidebyside

Imported the download handler for the source code.
---

diff --git a/dlhandler.py b/dlhandler.py
new file mode 100644
index 00000000..66ff8d5e
--- /dev/null
+++ b/dlhandler.py
@@ -0,0 +1,176 @@
+#!/usr/bin/python
+###############################################################################
+#                                                                             #
+# IPFire.org - A linux based firewall                                         #
+# Copyright (C) 2007  Michael Tremer & Christian Schmidt                      #
+#                                                                             #
+# This program is free software: you can redistribute it and/or modify        #
+# it under the terms of the GNU General Public License as published by        #
+# the Free Software Foundation, either version 3 of the License, or           #
+# (at your option) any later version.                                         #
+#                                                                             #
+# This program is distributed in the hope that it will be useful,             #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
+# GNU General Public License for more details.                                #
+#                                                                             #
+# You should have received a copy of the GNU General Public License           #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
+#                                                                             #
+###############################################################################
+
+import os
+import cgi
+from git import *
+
+def give_404():
+	print "Status: 404 Not found"
+	print "Pragma: no-cache"
+	print "Cache-control: no-cache"
+	print "Connection: close"
+	print
+	os._exit(0)
+
+def give_302():
+	print "Status: 302 Moved"
+	print "Location: /"
+	print "Pragma: no-cache"
+	print "Cache-control: no-cache"
+	print "Connection: close"
+	print
+	print
+	os._exit(0)
+
+class NotFoundError(Exception):
+	pass
+
+class SourceObject:
+	def __init__(self, path):
+		self.path = path
+
+		self.object_type = None
+
+		# Init hashes
+		self.hash_md5 = None
+		self.hash_sha1 = None
+
+	def hash(self):
+		## This is for python 2.4.
+		#import md5
+		#self.hash_md5 = md5.new(self.data()).hexdigest()
+
+		import sha
+		self.hash_sha1 = sha.new(self.data()).hexdigest()
+
+	def data(self):
+		return self.filedata
+
+	def run(self):
+		self.hash()
+		self.showhttpheaders()
+		print self.data()
+
+	def showhttpheaders(self):
+		print "Pragma: no-cache"
+		print "Cache-control: no-cache"
+		print "Connection: close"
+		print "Content-type:" + self.mimetype()
+		print "Content-length: %s" % len(self.data())
+		if self.object_type:
+			print "X-Object:" + self.object_type
+		if self.hash_md5:
+			print "X-MD5:" + self.hash_md5
+		if self.hash_sha1:
+			print "X-SHA1:" + self.hash_sha1
+		print
+		# An empty line ends the header
+
+class FileObject(SourceObject):
+	def __init__(self, path, version, url="/srv/www/ipfire.org/source/"):
+		SourceObject.__init__(self, path)
+		self.url= os.path.join(url, "source-%s" % version)
+		self.filepath = os.path.join(self.url, path)
+		self.init_file()
+		
+		self.object_type = "FileObject"
+
+	def init_file(self):
+		try:
+			f = open(self.filepath, "rb")
+		except:
+			raise NotFoundError
+
+		self.filedata = f.read()
+		f.close()
+
+	def mimetype(self):
+		default_mimetype = "text/plain"
+		from mimetypes import guess_type
+		return guess_type(self.filepath)[0] or default_mimetype
+
+class PatchObject(SourceObject):
+	def __init__(self, path, url="/srv/git/patches.git"):
+		SourceObject.__init__(self, path)
+
+		self.object_type = "PatchObject"
+
+		self.url = url
+		self.init_repo()
+
+	def init_repo(self):
+		# init the repo
+		self.repo = Repository(self.url)
+
+		# head, tree & blob
+		#self.head = self.repo.head()
+		self.tree = self.repo.head.tree
+
+		self.blob = self.set_blob()
+
+	def set_blob(self):
+		blob = None
+ 
+		for directory in self.tree.keys():
+			if isinstance(self.tree[directory], Blob):
+				continue
+			try:
+				blob = self.tree[directory][path]
+				if blob:
+					break
+			except KeyError:
+				pass
+		
+		if not blob:
+			raise NotFoundError
+
+		blob._load()
+		self.filedata = blob._contents
+		return blob
+
+	def mimetype(self):
+		return "text/plain" #self.blob.mime_type
+
+# main()
+path = cgi.FieldStorage().getfirst('path')
+ver = cgi.FieldStorage().getfirst('ver')
+
+if not path:
+	give_302()
+
+if not ver:
+	ver = "3.x"
+
+
+# At first, we assume that the requested object is a plain file:
+try:
+	object = FileObject(path=path, version=ver)
+except NotFoundError:
+	# Second, we assume that the requestet object is in the patch repo:
+	try:
+		object = PatchObject(path=path)
+	except NotFoundError:
+		give_404()
+	else:
+		object.run()
+else:
+	object.run()