├── .gitignore ├── COPYING ├── COPYING.LESSER ├── README.rst ├── bootstrap.py ├── buildout.cfg ├── config.ini ├── gitweb.py ├── setup.cfg ├── setup.py ├── subprocessio.py └── tests.py /.gitignore: -------------------------------------------------------------------------------- 1 | 2 | #ignore thumbnails created by windows 3 | Thumbs.db 4 | #Ignore files build by Visual Studio 5 | *.obj 6 | *.exe 7 | *.pdb 8 | *.user 9 | *.aps 10 | *.pch 11 | *.vspscc 12 | *_i.c 13 | *_p.c 14 | *.ncb 15 | *.suo 16 | *.tlb 17 | *.tlh 18 | *.bak 19 | *.cache 20 | *.ilk 21 | *.log 22 | *.pyc 23 | [Bb]in 24 | [Dd]ebug*/ 25 | *.lib 26 | *.sbr 27 | obj/ 28 | [Rr]elease*/ 29 | _ReSharper*/ 30 | [Tt]est[Rr]esult* -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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See the GNU 484 | Lesser General Public License for more details. 485 | 486 | You should have received a copy of the GNU Lesser General Public 487 | License along with this library; if not, write to the Free Software 488 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 489 | 490 | Also add information on how to contact you by electronic and paper mail. 491 | 492 | You should also get your employer (if you work as a programmer) or your 493 | school, if any, to sign a "copyright disclaimer" for the library, if 494 | necessary. Here is a sample; alter the names: 495 | 496 | Yoyodyne, Inc., hereby disclaims all copyright interest in the 497 | library `Frob' (a library for tweaking knobs) written by James Random Hacker. 498 | 499 | , 1 April 1990 500 | Ty Coon, President of Vice 501 | 502 | That's all there is to it! 503 | -------------------------------------------------------------------------------- /README.rst: -------------------------------------------------------------------------------- 1 | GitWeb is a fork of `git_http_backend.py 2 | `_ using Webob 3 | 4 | Dependencies 5 | ============ 6 | 7 | * Python 2.6 8 | * Git >= 1.6.6 (On the server and on the client side.) 9 | 10 | Installation 11 | ============ 12 | 13 | With easy_install:: 14 | 15 | easy_install GitWeb 16 | 17 | Get the source:: 18 | 19 | git clone git://github.com/gawel/GitWeb.git 20 | 21 | Usage 22 | ===== 23 | 24 | The `gunicorn `_ WSGI server is recommended since it have 25 | a great support of chunked transfer-encoding. 26 | 27 | Here is a simple Paste config file:: 28 | 29 | [server:main] 30 | use = egg:gunicorn 31 | port = 8080 32 | 33 | [app:main] 34 | use = egg:GitWeb 35 | content_path = %(here)s/repos 36 | auto_create = true 37 | 38 | Now try:: 39 | 40 | git clone . http://localhost:8080/repo.git 41 | 42 | License 43 | ======= 44 | 45 | See file named COPYING.LESSER for license terms governing over the entire 46 | project. 47 | 48 | (Some, explisitely labeled so constituent files/works are licensed under 49 | separate, more-permissive terms. See disclaimers at the start of the files for details.) 50 | 51 | Contributors 52 | ============ 53 | 54 | - Gael Pasgrimaud 55 | 56 | Author of the fork 57 | 58 | - Daniel Dotsenko 59 | 60 | Maintener of git_http_backend.py and creator of subprocessio 61 | 62 | -------------------------------------------------------------------------------- /bootstrap.py: -------------------------------------------------------------------------------- 1 | ############################################################################## 2 | # 3 | # Copyright (c) 2006 Zope Foundation and Contributors. 4 | # All Rights Reserved. 5 | # 6 | # This software is subject to the provisions of the Zope Public License, 7 | # Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution. 8 | # THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED 9 | # WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 10 | # WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS 11 | # FOR A PARTICULAR PURPOSE. 12 | # 13 | ############################################################################## 14 | """Bootstrap a buildout-based project 15 | 16 | Simply run this script in a directory containing a buildout.cfg. 17 | The script accepts buildout command-line options, so you can 18 | use the -c option to specify an alternate configuration file. 19 | """ 20 | 21 | import os, shutil, sys, tempfile, textwrap, urllib, urllib2, subprocess 22 | from optparse import OptionParser 23 | 24 | if sys.platform == 'win32': 25 | def quote(c): 26 | if ' ' in c: 27 | return '"%s"' % c # work around spawn lamosity on windows 28 | else: 29 | return c 30 | else: 31 | quote = str 32 | 33 | # See zc.buildout.easy_install._has_broken_dash_S for motivation and comments. 34 | stdout, stderr = subprocess.Popen( 35 | [sys.executable, '-Sc', 36 | 'try:\n' 37 | ' import ConfigParser\n' 38 | 'except ImportError:\n' 39 | ' print 1\n' 40 | 'else:\n' 41 | ' print 0\n'], 42 | stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate() 43 | has_broken_dash_S = bool(int(stdout.strip())) 44 | 45 | # In order to be more robust in the face of system Pythons, we want to 46 | # run without site-packages loaded. This is somewhat tricky, in 47 | # particular because Python 2.6's distutils imports site, so starting 48 | # with the -S flag is not sufficient. However, we'll start with that: 49 | if not has_broken_dash_S and 'site' in sys.modules: 50 | # We will restart with python -S. 51 | args = sys.argv[:] 52 | args[0:0] = [sys.executable, '-S'] 53 | args = map(quote, args) 54 | os.execv(sys.executable, args) 55 | # Now we are running with -S. We'll get the clean sys.path, import site 56 | # because distutils will do it later, and then reset the path and clean 57 | # out any namespace packages from site-packages that might have been 58 | # loaded by .pth files. 59 | clean_path = sys.path[:] 60 | import site 61 | sys.path[:] = clean_path 62 | for k, v in sys.modules.items(): 63 | if k in ('setuptools', 'pkg_resources') or ( 64 | hasattr(v, '__path__') and 65 | len(v.__path__)==1 and 66 | not os.path.exists(os.path.join(v.__path__[0],'__init__.py'))): 67 | # This is a namespace package. Remove it. 68 | sys.modules.pop(k) 69 | 70 | is_jython = sys.platform.startswith('java') 71 | 72 | setuptools_source = 'http://peak.telecommunity.com/dist/ez_setup.py' 73 | distribute_source = 'http://python-distribute.org/distribute_setup.py' 74 | 75 | # parsing arguments 76 | def normalize_to_url(option, opt_str, value, parser): 77 | if value: 78 | if '://' not in value: # It doesn't smell like a URL. 79 | value = 'file://%s' % ( 80 | urllib.pathname2url( 81 | os.path.abspath(os.path.expanduser(value))),) 82 | if opt_str == '--download-base' and not value.endswith('/'): 83 | # Download base needs a trailing slash to make the world happy. 84 | value += '/' 85 | else: 86 | value = None 87 | name = opt_str[2:].replace('-', '_') 88 | setattr(parser.values, name, value) 89 | 90 | usage = '''\ 91 | [DESIRED PYTHON FOR BUILDOUT] bootstrap.py [options] 92 | 93 | Bootstraps a buildout-based project. 94 | 95 | Simply run this script in a directory containing a buildout.cfg, using the 96 | Python that you want bin/buildout to use. 97 | 98 | Note that by using --setup-source and --download-base to point to 99 | local resources, you can keep this script from going over the network. 100 | ''' 101 | 102 | parser = OptionParser(usage=usage) 103 | parser.add_option("-v", "--version", dest="version", 104 | help="use a specific zc.buildout version") 105 | parser.add_option("-d", "--distribute", 106 | action="store_true", dest="use_distribute", default=False, 107 | help="Use Distribute rather than Setuptools.") 108 | parser.add_option("--setup-source", action="callback", dest="setup_source", 109 | callback=normalize_to_url, nargs=1, type="string", 110 | help=("Specify a URL or file location for the setup file. " 111 | "If you use Setuptools, this will default to " + 112 | setuptools_source + "; if you use Distribute, this " 113 | "will default to " + distribute_source +".")) 114 | parser.add_option("--download-base", action="callback", dest="download_base", 115 | callback=normalize_to_url, nargs=1, type="string", 116 | help=("Specify a URL or directory for downloading " 117 | "zc.buildout and either Setuptools or Distribute. " 118 | "Defaults to PyPI.")) 119 | parser.add_option("--eggs", 120 | help=("Specify a directory for storing eggs. Defaults to " 121 | "a temporary directory that is deleted when the " 122 | "bootstrap script completes.")) 123 | parser.add_option("-t", "--accept-buildout-test-releases", 124 | dest='accept_buildout_test_releases', 125 | action="store_true", default=False, 126 | help=("Normally, if you do not specify a --version, the " 127 | "bootstrap script and buildout gets the newest " 128 | "*final* versions of zc.buildout and its recipes and " 129 | "extensions for you. If you use this flag, " 130 | "bootstrap and buildout will get the newest releases " 131 | "even if they are alphas or betas.")) 132 | parser.add_option("-c", None, action="store", dest="config_file", 133 | help=("Specify the path to the buildout configuration " 134 | "file to be used.")) 135 | 136 | options, args = parser.parse_args() 137 | 138 | # if -c was provided, we push it back into args for buildout's main function 139 | if options.config_file is not None: 140 | args += ['-c', options.config_file] 141 | 142 | if options.eggs: 143 | eggs_dir = os.path.abspath(os.path.expanduser(options.eggs)) 144 | else: 145 | eggs_dir = tempfile.mkdtemp() 146 | 147 | if options.setup_source is None: 148 | if options.use_distribute: 149 | options.setup_source = distribute_source 150 | else: 151 | options.setup_source = setuptools_source 152 | 153 | if options.accept_buildout_test_releases: 154 | args.append('buildout:accept-buildout-test-releases=true') 155 | args.append('bootstrap') 156 | 157 | try: 158 | import pkg_resources 159 | import setuptools # A flag. Sometimes pkg_resources is installed alone. 160 | if not hasattr(pkg_resources, '_distribute'): 161 | raise ImportError 162 | except ImportError: 163 | ez_code = urllib2.urlopen( 164 | options.setup_source).read().replace('\r\n', '\n') 165 | ez = {} 166 | exec ez_code in ez 167 | setup_args = dict(to_dir=eggs_dir, download_delay=0) 168 | if options.download_base: 169 | setup_args['download_base'] = options.download_base 170 | if options.use_distribute: 171 | setup_args['no_fake'] = True 172 | ez['use_setuptools'](**setup_args) 173 | if 'pkg_resources' in sys.modules: 174 | reload(sys.modules['pkg_resources']) 175 | import pkg_resources 176 | # This does not (always?) update the default working set. We will 177 | # do it. 178 | for path in sys.path: 179 | if path not in pkg_resources.working_set.entries: 180 | pkg_resources.working_set.add_entry(path) 181 | 182 | cmd = [quote(sys.executable), 183 | '-c', 184 | quote('from setuptools.command.easy_install import main; main()'), 185 | '-mqNxd', 186 | quote(eggs_dir)] 187 | 188 | if not has_broken_dash_S: 189 | cmd.insert(1, '-S') 190 | 191 | find_links = options.download_base 192 | if not find_links: 193 | find_links = os.environ.get('bootstrap-testing-find-links') 194 | if find_links: 195 | cmd.extend(['-f', quote(find_links)]) 196 | 197 | if options.use_distribute: 198 | setup_requirement = 'distribute' 199 | else: 200 | setup_requirement = 'setuptools' 201 | ws = pkg_resources.working_set 202 | setup_requirement_path = ws.find( 203 | pkg_resources.Requirement.parse(setup_requirement)).location 204 | env = dict( 205 | os.environ, 206 | PYTHONPATH=setup_requirement_path) 207 | 208 | requirement = 'zc.buildout' 209 | version = options.version 210 | if version is None and not options.accept_buildout_test_releases: 211 | # Figure out the most recent final version of zc.buildout. 212 | import setuptools.package_index 213 | _final_parts = '*final-', '*final' 214 | def _final_version(parsed_version): 215 | for part in parsed_version: 216 | if (part[:1] == '*') and (part not in _final_parts): 217 | return False 218 | return True 219 | index = setuptools.package_index.PackageIndex( 220 | search_path=[setup_requirement_path]) 221 | if find_links: 222 | index.add_find_links((find_links,)) 223 | req = pkg_resources.Requirement.parse(requirement) 224 | if index.obtain(req) is not None: 225 | best = [] 226 | bestv = None 227 | for dist in index[req.project_name]: 228 | distv = dist.parsed_version 229 | if _final_version(distv): 230 | if bestv is None or distv > bestv: 231 | best = [dist] 232 | bestv = distv 233 | elif distv == bestv: 234 | best.append(dist) 235 | if best: 236 | best.sort() 237 | version = best[-1].version 238 | if version: 239 | requirement = '=='.join((requirement, version)) 240 | cmd.append(requirement) 241 | 242 | if is_jython: 243 | import subprocess 244 | exitcode = subprocess.Popen(cmd, env=env).wait() 245 | else: # Windows prefers this, apparently; otherwise we would prefer subprocess 246 | exitcode = os.spawnle(*([os.P_WAIT, sys.executable] + cmd + [env])) 247 | if exitcode != 0: 248 | sys.stdout.flush() 249 | sys.stderr.flush() 250 | print ("An error occurred when trying to install zc.buildout. " 251 | "Look above this message for any errors that " 252 | "were output by easy_install.") 253 | sys.exit(exitcode) 254 | 255 | ws.add_entry(eggs_dir) 256 | ws.require(requirement) 257 | import zc.buildout.buildout 258 | zc.buildout.buildout.main(args) 259 | if not options.eggs: # clean up temporary egg directory 260 | shutil.rmtree(eggs_dir) 261 | -------------------------------------------------------------------------------- /buildout.cfg: -------------------------------------------------------------------------------- 1 | 2 | [buildout] 3 | newest = false 4 | extensions = gp.vcsdevelop 5 | #vcs-extend-develop = 6 | find-links = http://www.gawel.org/docs/dist 7 | parts = eggs 8 | develop = . 9 | 10 | [eggs] 11 | recipe = zc.recipe.egg 12 | eggs = 13 | GitWeb 14 | PasteScript 15 | cherrypy 16 | gunicorn 17 | unittest2 18 | interpreter = python 19 | -------------------------------------------------------------------------------- /config.ini: -------------------------------------------------------------------------------- 1 | [server:main] 2 | use = egg:Paste#http 3 | host = 0.0.0.0 4 | port = 5000 5 | 6 | [app:main] 7 | paste.app_factory = gitweb:make_dir_app 8 | content_path = /Users/gawel/tmp/repos 9 | auto_create = true 10 | 11 | # Begin logging configuration 12 | 13 | [loggers] 14 | keys = root 15 | 16 | [handlers] 17 | keys = console 18 | 19 | [formatters] 20 | keys = generic 21 | 22 | [logger_root] 23 | level = INFO 24 | handlers = console 25 | 26 | [handler_console] 27 | class = StreamHandler 28 | args = (sys.stderr,) 29 | level = NOTSET 30 | formatter = generic 31 | 32 | [formatter_generic] 33 | format = %(asctime)s %(levelname)-5.5s [%(name)s][%(threadName)s] %(message)s 34 | 35 | # End logging configuration 36 | -------------------------------------------------------------------------------- /gitweb.py: -------------------------------------------------------------------------------- 1 | ''' 2 | Module provides WSGI-based methods for handling HTTP Get and Post requests that 3 | are specific only to git-http-backend's Smart HTTP protocol. 4 | 5 | Copyright (c) 2011 Gael Pasgrimaud 6 | 7 | This file is part of GitWeb Project. 8 | 9 | GitWeb Project is free software: you can redistribute it and/or modify 10 | it under the terms of the GNU Lesser General Public License as published by 11 | the Free Software Foundation, either version 2.1 of the License, or 12 | (at your option) any later version. 13 | 14 | GitWeb Project is distributed in the hope that it will be useful, 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 | GNU Lesser General Public License for more details. 18 | 19 | You should have received a copy of the GNU Lesser General Public License 20 | along with GitWeb Project. If not, see . 21 | ''' 22 | import os 23 | import sys 24 | import socket 25 | import logging 26 | import subprocess 27 | import subprocessio 28 | from webob import Request, Response, exc 29 | 30 | log = logging.getLogger(__name__) 31 | 32 | class FileWrapper(object): 33 | 34 | def __init__(self, fd, content_length): 35 | self.fd = fd 36 | self.content_length = content_length 37 | self.remain = content_length 38 | 39 | def read(self, size): 40 | if size <= self.remain: 41 | try: 42 | data = self.fd.read(size) 43 | except socket.error: 44 | raise IOError(self) 45 | self.remain -= size 46 | elif self.remain: 47 | data = self.fd.read(self.remain) 48 | self.remain = 0 49 | else: 50 | data = None 51 | return data 52 | 53 | def __repr__(self): 54 | return '' % ( 55 | self.fd, self.content_length, self.content_length - self.keep) 56 | 57 | class GitRepository(object): 58 | git_folder_signature = set(['config', 'head', 'info', 'objects', 'refs']) 59 | commands = ['git-upload-pack', 'git-receive-pack'] 60 | 61 | def __init__(self, content_path): 62 | files = set([f.lower() for f in os.listdir(content_path)]) 63 | assert self.git_folder_signature.intersection(files) == self.git_folder_signature, content_path 64 | self.content_path = content_path 65 | self.valid_accepts = ['application/x-%s-result' % c for c in self.commands] 66 | 67 | def inforefs(self, request, environ): 68 | """WSGI Response producer for HTTP GET Git Smart HTTP /info/refs request.""" 69 | 70 | git_command = request.GET['service'] 71 | if git_command not in self.commands: 72 | return exc.HTTPMethodNotAllowed() 73 | 74 | # note to self: 75 | # please, resist the urge to add '\n' to git capture and increment line count by 1. 76 | # The code in Git client not only does NOT need '\n', but actually blows up 77 | # if you sprinkle "flush" (0000) as "0001\n". 78 | # It reads binary, per number of bytes specified. 79 | # if you do add '\n' as part of data, count it. 80 | smart_server_advert = '# service=%s' % git_command 81 | try: 82 | out = subprocessio.SubprocessIOChunker( 83 | r'git %s --stateless-rpc --advertise-refs "%s"' % (git_command[4:], self.content_path), 84 | starting_values = [ str(hex(len(smart_server_advert)+4)[2:].rjust(4,'0') + smart_server_advert + '0000') ] 85 | ) 86 | except EnvironmentError, e: 87 | log.exception(e) 88 | raise exc.HTTPExpectationFailed() 89 | resp = Response() 90 | resp.content_type = 'application/x-%s-advertisement' % str(git_command) 91 | resp.app_iter = out 92 | return resp 93 | 94 | def backend(self, request, environ): 95 | """ 96 | WSGI Response producer for HTTP POST Git Smart HTTP requests. 97 | Reads commands and data from HTTP POST's body. 98 | returns an iterator obj with contents of git command's response to stdout 99 | """ 100 | 101 | git_command = request.path_info.strip('/') 102 | if git_command not in self.commands: 103 | return exc.HTTPMethodNotAllowed() 104 | 105 | if 'CONTENT_LENGTH' in environ: 106 | inputstream = FileWrapper(environ['wsgi.input'], request.content_length) 107 | else: 108 | inputstream = environ['wsgi.input'] 109 | 110 | try: 111 | out = subprocessio.SubprocessIOChunker( 112 | r'git %s --stateless-rpc "%s"' % (git_command[4:], self.content_path), 113 | inputstream = inputstream 114 | ) 115 | except EnvironmentError, e: 116 | log.exception(e) 117 | raise exc.HTTPExpectationFailed() 118 | 119 | if git_command in [u'git-receive-pack']: 120 | # updating refs manually after each push. Needed for pre-1.7.0.4 git clients using regular HTTP mode. 121 | subprocess.call(u'git --git-dir "%s" update-server-info' % self.content_path, shell=True) 122 | 123 | resp = Response() 124 | resp.content_type = 'application/x-%s-result' % git_command.encode('utf8') 125 | resp.app_iter = out 126 | return resp 127 | 128 | 129 | def __call__(self, environ, start_response): 130 | request = Request(environ) 131 | if request.path_info.startswith('/info/refs'): 132 | app = self.inforefs 133 | elif [a for a in self.valid_accepts if a in request.accept]: 134 | app = self.backend 135 | 136 | try: 137 | resp = app(request, environ) 138 | except exc.HTTPException, e: 139 | resp = e 140 | log.exception(e) 141 | except Exception, e: 142 | log.exception(e) 143 | resp = exc.HTTPInternalServerError() 144 | 145 | start_response(resp.status, resp.headers.items()) 146 | return resp.app_iter 147 | 148 | class GitDirectory(object): 149 | 150 | repository_app = GitRepository 151 | 152 | def __init__(self, content_path, auto_create=True, **kwargs): 153 | if not os.path.isdir(content_path): 154 | if auto_create: 155 | os.makedirs(content_path) 156 | else: 157 | raise OSError(content_path) 158 | self.content_path = content_path 159 | self.auto_create = auto_create 160 | if 'pre_clone_hook' in kwargs: 161 | self.pre_clone_hook = kwargs['pre_clone_hook'] 162 | if 'post_clone_hook' in kwargs: 163 | self.pre_clone_hook = kwargs['post_clone_hook'] 164 | 165 | def pre_clone_hook(self, content_path, request): 166 | pass 167 | 168 | def post_clone_hook(self, content_path, request): 169 | pass 170 | 171 | def __call__(self, environ, start_response): 172 | request = Request(environ) 173 | repo_name = request.path_info_pop() 174 | if not repo_name.endswith('.git'): 175 | return exc.HTTPNotFound()(environ, start_response) 176 | content_path = os.path.realpath(os.path.join(self.content_path, repo_name)) 177 | if self.content_path not in content_path: 178 | return exc.HTTPForbidden()(environ, start_response) 179 | try: 180 | app = GitRepository(content_path) 181 | except (AssertionError, OSError): 182 | if os.path.isdir(content_path): 183 | app = self.repository_app(content_path) 184 | else: 185 | if self.auto_create and 'application/x-git-receive-pack-result' in request.accept: 186 | try: 187 | self.pre_clone_hook(content_path, request) 188 | subprocess.call(u'git init --quiet --bare "%s"' % content_path, shell=True) 189 | self.post_clone_hook(content_path, request) 190 | except exc.HTTPException, e: 191 | return e(environ, start_response) 192 | app = self.repository_app(content_path) 193 | else: 194 | return exc.HTTPNotFound()(environ, start_response) 195 | return app(environ, start_response) 196 | 197 | 198 | 199 | def make_app(global_config, content_path='', **local_config): 200 | if 'content_path' in global_config: 201 | content_path = global_config['content_path'] 202 | return GitRepository(content_path) 203 | 204 | def make_dir_app(global_config, content_path='', auto_create=None, **local_config): 205 | if 'content_path' in global_config: 206 | content_path = global_config['content_path'] 207 | return GitDirectory(content_path, auto_create=auto_create) 208 | 209 | -------------------------------------------------------------------------------- /setup.cfg: -------------------------------------------------------------------------------- 1 | [aliases] 2 | release = sdist --formats=zip,gztar register upload 3 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | import os 2 | 3 | from setuptools import setup, find_packages 4 | 5 | setup(name='GitWeb', 6 | version='0.4', 7 | description='WSGI application to serve a git repository', 8 | long_description=open('README.txt').read(), 9 | classifiers=[ 10 | "Programming Language :: Python", 11 | "Topic :: Internet :: WWW/HTTP", 12 | "Topic :: Internet :: WWW/HTTP :: WSGI :: Application", 13 | ], 14 | author='Gael Pasgrimaud', 15 | author_email='gael@gawel.org', 16 | url='https://github.com/gawel/GitWeb', 17 | licence='GPL', 18 | keywords='web', 19 | py_modules = ['gitweb', 'subprocessio'], 20 | packages=find_packages(exclude=['tests']), 21 | include_package_data=True, 22 | zip_safe=False, 23 | install_requires=['WebOb'], 24 | tests_require=[], 25 | entry_points = """\ 26 | [paste.app_factory] 27 | main = gitweb:make_dir_app 28 | dir = gitweb:make_dir_app 29 | repo = gitweb:make_app 30 | """, 31 | ) 32 | 33 | -------------------------------------------------------------------------------- /subprocessio.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | ''' 3 | Module provides a class allowing to wrap communication over subprocess.Popen 4 | input, output, error streams into a meaningfull, non-blocking, concurrent stream 5 | processor exposing the output data as an iterator fitting to be a return value 6 | passed by a WSGI applicaiton to a WSGI server per PEP 3333. 7 | 8 | Copyright (c) 2011 Daniel Dotsenko 9 | 10 | This file is part of git_http_backend.py Project. 11 | 12 | git_http_backend.py Project is free software: you can redistribute it and/or modify 13 | it under the terms of the GNU Lesser General Public License as published by 14 | the Free Software Foundation, either version 2.1 of the License, or 15 | (at your option) any later version. 16 | 17 | git_http_backend.py Project is distributed in the hope that it will be useful, 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 | GNU Lesser General Public License for more details. 21 | 22 | You should have received a copy of the GNU Lesser General Public License 23 | along with git_http_backend.py Project. If not, see . 24 | ''' 25 | 26 | from collections import deque 27 | import threading 28 | import subprocess 29 | import os 30 | 31 | class StreamFeeder(threading.Thread): 32 | """ 33 | Normal writing into pipe-like is blocking once the buffer is filled. 34 | This thread allows a thread to seep data from a file-like into a pipe 35 | without blocking the main thread. 36 | We close inpipe once the end of the source stream is reached. 37 | """ 38 | def __init__(self, source): 39 | super(StreamFeeder,self).__init__() 40 | self.daemon = True 41 | filelike = False 42 | self.bytes = b'' 43 | if type(source) in (type(''),bytes,bytearray): # string-like 44 | self.bytes = bytes(source) 45 | else: # can be either file pointer or file-like 46 | if type(source) in (int, long): # file pointer it is 47 | ## converting file descriptor (int) stdin into file-like 48 | try: 49 | source = os.fdopen(source, 'rb', 16384) 50 | except: 51 | pass 52 | # let's see if source is file-like by now 53 | try: 54 | filelike = source.read 55 | except: 56 | pass 57 | if not filelike and not self.bytes: 58 | raise TypeError("StreamFeeder's source object must be a readable file-like, a file descriptor, or a string-like.") 59 | self.source = source 60 | self.readiface, self.writeiface = os.pipe() 61 | 62 | def run(self): 63 | t = self.writeiface 64 | if self.bytes: 65 | os.write(t, self.bytes) 66 | else: 67 | s = self.source 68 | b = s.read(4096) 69 | while b: 70 | os.write(t, b) 71 | b = s.read(4096) 72 | os.close(t) 73 | 74 | @property 75 | def output(self): 76 | return self.readiface 77 | 78 | class InputStreamChunker(threading.Thread): 79 | def __init__(self, source, target, buffer_size, chunk_size): 80 | 81 | super(InputStreamChunker,self).__init__() 82 | 83 | self.daemon = True # die die die. 84 | 85 | self.source = source 86 | self.target = target 87 | self.chunk_count_max = int(buffer_size / chunk_size) + 1 88 | self.chunk_size = chunk_size 89 | 90 | self.data_added = threading.Event() 91 | self.data_added.clear() 92 | 93 | self.keep_reading = threading.Event() 94 | self.keep_reading.set() 95 | 96 | self.EOF = threading.Event() 97 | self.EOF.clear() 98 | 99 | self.go = threading.Event() 100 | self.go.set() 101 | 102 | def stop(self): 103 | self.go.clear() 104 | self.EOF.set() 105 | try: 106 | # this is not proper, but is done to force the reader thread let go of 107 | # the input because, if successful, .close() will send EOF down the pipe. 108 | self.source.close() 109 | except: 110 | pass 111 | 112 | def run(self): 113 | s = self.source 114 | t = self.target 115 | cs = self.chunk_size 116 | ccm = self.chunk_count_max 117 | kr = self.keep_reading 118 | da = self.data_added 119 | go = self.go 120 | b = s.read(cs) 121 | while b and go.is_set(): 122 | if len(t) > ccm: 123 | kr.clear() 124 | kr.wait(2) 125 | # # this only works on 2.7.x and up 126 | # if not kr.wait(10): 127 | # raise Exception("Timed out while waiting for input to be read.") 128 | # instead we'll use this 129 | if len(t) > ccm + 3: 130 | raise IOError("Timed out while waiting for input from subprocess.") 131 | t.append(b) 132 | da.set() 133 | b = s.read(cs) 134 | self.EOF.set() 135 | da.set() # for cases when done but there was no input. 136 | 137 | class BufferedGenerator(): 138 | ''' 139 | Class behaves as a non-blocking, buffered pipe reader. 140 | Reads chunks of data (through a thread) 141 | from a blocking pipe, and attaches these to an array (Deque) of chunks. 142 | Reading is halted in the thread when max chunks is internally buffered. 143 | The .next() may operate in blocking or non-blocking fashion by yielding 144 | '' if no data is ready 145 | to be sent or by not returning until there is some data to send 146 | When we get EOF from underlying source pipe we raise the marker to raise 147 | StopIteration after the last chunk of data is yielded. 148 | ''' 149 | 150 | def __init__(self, source, buffer_size = 65536, chunk_size = 4096, starting_values = [], bottomless = False): 151 | 152 | if bottomless: 153 | maxlen = int(buffer_size / chunk_size) 154 | else: 155 | maxlen = None 156 | 157 | self.data = deque(starting_values, maxlen) 158 | 159 | self.worker = InputStreamChunker(source, self.data, buffer_size, chunk_size) 160 | if starting_values: 161 | self.worker.data_added.set() 162 | self.worker.start() 163 | 164 | #################### 165 | # Generator's methods 166 | #################### 167 | 168 | def __iter__(self): 169 | return self 170 | 171 | def next(self): 172 | while not len(self.data) and not self.worker.EOF.is_set(): 173 | self.worker.data_added.clear() 174 | self.worker.data_added.wait(0.2) 175 | if len(self.data): 176 | self.worker.keep_reading.set() 177 | return bytes(self.data.popleft()) 178 | elif self.worker.EOF.is_set(): 179 | raise StopIteration 180 | 181 | def throw(self, type, value=None, traceback=None): 182 | if not self.worker.EOF.is_set(): 183 | raise type(value) 184 | 185 | def start(self): 186 | self.worker.start() 187 | 188 | def stop(self): 189 | self.worker.stop() 190 | 191 | def close(self): 192 | try: 193 | self.worker.stop() 194 | self.throw(GeneratorExit) 195 | except (GeneratorExit, StopIteration): 196 | pass 197 | 198 | def __del__(self): 199 | self.close() 200 | 201 | #################### 202 | # Threaded reader's infrastructure. 203 | #################### 204 | @property 205 | def input(self): 206 | return self.worker.w 207 | 208 | @property 209 | def data_added_event(self): 210 | return self.worker.data_added 211 | @property 212 | def data_added(self): 213 | return self.worker.data_added.is_set() 214 | 215 | @property 216 | def reading_paused(self): 217 | return not self.worker.keep_reading.is_set() 218 | 219 | @property 220 | def done_reading_event(self): 221 | ''' 222 | Done_reding does not mean that the iterator's buffer is empty. 223 | Iterator might have done reading from underlying source, but the read 224 | chunks might still be available for serving through .next() method. 225 | 226 | @return An Event class instance. 227 | ''' 228 | return self.worker.EOF 229 | @property 230 | def done_reading(self): 231 | ''' 232 | Done_reding does not mean that the iterator's buffer is empty. 233 | Iterator might have done reading from underlying source, but the read 234 | chunks might still be available for serving through .next() method. 235 | 236 | @return An Bool value. 237 | ''' 238 | return self.worker.EOF.is_set() 239 | 240 | @property 241 | def length(self): 242 | ''' 243 | returns int. 244 | 245 | This is the lenght of the que of chunks, not the length of 246 | the combined contents in those chunks. 247 | 248 | __len__() cannot be meaningfully implemented because this 249 | reader is just flying throuh a bottomless pit content and 250 | can only know the lenght of what it already saw. 251 | 252 | If __len__() on WSGI server per PEP 3333 returns a value, 253 | the responce's length will be set to that. In order not to 254 | confuse WSGI PEP3333 servers, we will not implement __len__ 255 | at all. 256 | ''' 257 | return len(self.data) 258 | 259 | def prepend(self, x): 260 | self.data.appendleft(x) 261 | 262 | def append(self, x): 263 | self.data.append(x) 264 | 265 | def extend(self, o): 266 | self.data.extend(o) 267 | 268 | def __getitem__(self, i): 269 | return self.data[i] 270 | 271 | class SubprocessIOChunker(): 272 | ''' 273 | Processor class wrapping handling of subprocess IO. 274 | 275 | In a way, this is a "communicate()" replacement with a twist. 276 | 277 | - We are multithreaded. Writing in and reading out, err are all sep threads. 278 | - We support concurrent (in and out) stream processing. 279 | - The output is not a stream. It's a queue of read string (bytes, not unicode) 280 | chunks. The object behaves as an iterable. You can "for chunk in obj:" us. 281 | - We are non-blocking in more respects than communicate() 282 | (reading from subprocess out pauses when internal buffer is full, but 283 | does not block the parent calling code. On the flip side, reading from 284 | slow-yielding subprocess may block the iteration until data shows up. This 285 | does not block the parallel inpipe reading occurring parallel thread.) 286 | 287 | The purpose of the object is to allow us to wrap subprocess interactions into 288 | and interable that can be passed to a WSGI server as the application's return 289 | value. Because of stream-processing-ability, WSGI does not have to read ALL 290 | of the subprocess's output and buffer it, before handing it to WSGI server for 291 | HTTP response. Instead, the class initializer reads just a bit of the stream 292 | to figure out if error ocurred or likely to occur and if not, just hands the 293 | further iteration over subprocess output to the server for completion of HTTP 294 | response. 295 | 296 | The real or perceived subprocess error is trapped and raised as one of 297 | EnvironmentError family of exceptions 298 | 299 | Example usage: 300 | # try: 301 | # answer = SubprocessIOChunker( 302 | # cmd, 303 | # input, 304 | # buffer_size = 65536, 305 | # chunk_size = 4096 306 | # ) 307 | # except (EnvironmentError) as e: 308 | # print str(e) 309 | # raise e 310 | # 311 | # return answer 312 | 313 | 314 | 315 | ''' 316 | def __init__(self, cmd, inputstream = None, buffer_size = 65536, chunk_size = 4096, starting_values = []): 317 | ''' 318 | Initializes SubprocessIOChunker 319 | 320 | @param cmd A Subprocess.Popen style "cmd". Can be string or array of strings 321 | @param inputstream (Default: None) A file-like, string, or file pointer. 322 | @param buffer_size (Default: 65536) A size of total buffer per stream in bytes. 323 | @param chunk_size (Default: 4096) A max size of a chunk. Actual chunk may be smaller. 324 | @param starting_values (Default: []) An array of strings to put in front of output que. 325 | ''' 326 | 327 | if inputstream: 328 | input_streamer = StreamFeeder(inputstream) 329 | input_streamer.start() 330 | inputstream = input_streamer.output 331 | 332 | _p = subprocess.Popen(cmd, 333 | bufsize = -1, 334 | shell = True, 335 | stdin = inputstream, 336 | stdout = subprocess.PIPE, 337 | stderr = subprocess.PIPE 338 | ) 339 | 340 | bg_out = BufferedGenerator(_p.stdout, buffer_size, chunk_size, starting_values) 341 | bg_err = BufferedGenerator(_p.stderr, 16000, 1, bottomless = True) 342 | 343 | while not bg_out.done_reading and not bg_out.reading_paused and not bg_err.length: 344 | # doing this until we reach either end of file, or end of buffer. 345 | bg_out.data_added_event.wait(1) 346 | bg_out.data_added_event.clear() 347 | 348 | # at this point it's still ambiguous if we are done reading or just full buffer. 349 | # Either way, if error (returned by ended process, or implied based on 350 | # presence of stuff in stderr output) we error out. 351 | # Else, we are happy. 352 | _returncode = _p.poll() 353 | if _returncode or (_returncode == None and bg_err.length): 354 | try: 355 | _p.terminate() 356 | except: 357 | pass 358 | bg_out.stop() 359 | bg_err.stop() 360 | raise EnvironmentError("Subprocess exited due to an error.\n" + "".join(bg_err)) 361 | 362 | self.process = _p 363 | self.output = bg_out 364 | self.error = bg_err 365 | 366 | def __iter__(self): 367 | return self 368 | 369 | def next(self): 370 | if self.process.poll(): 371 | raise EnvironmentError("Subprocess exited due to an error:\n" + ''.join(self.error)) 372 | return self.output.next() 373 | 374 | def throw(self, type, value=None, traceback=None): 375 | if self.output.length or not self.output.done_reading: 376 | raise type(value) 377 | 378 | def close(self): 379 | try: 380 | self.process.terminate() 381 | except: 382 | pass 383 | try: 384 | self.output.close() 385 | except: 386 | pass 387 | try: 388 | self.error.close() 389 | except: 390 | pass 391 | 392 | def __del__(self): 393 | self.close() 394 | 395 | -------------------------------------------------------------------------------- /tests.py: -------------------------------------------------------------------------------- 1 | # -*- coding: utf-8 -*- 2 | import unittest2 as unittest 3 | from os.path import join 4 | import subprocess 5 | import tempfile 6 | import socket 7 | import signal 8 | import shutil 9 | import time 10 | import os 11 | 12 | def kill(pid): 13 | try: 14 | os.kill(pid, signal.SIGKILL) 15 | except OSError: 16 | print 'process %s is not running' % pid 17 | 18 | def get_free_port(): 19 | s = socket.socket() 20 | s.bind(('',0)) 21 | ip, port = s.getsockname() 22 | s.close() 23 | return port 24 | 25 | ini_file = """ 26 | [server:main] 27 | use = egg:gunicorn 28 | #use = egg:Paste#http 29 | port = %(port)s 30 | 31 | [app:main] 32 | use = egg:GitWeb#dir 33 | content_path = %(repos)s 34 | auto_create = true 35 | """ 36 | 37 | def call(*args, **kwargs): 38 | print 'running %r' % ' '.join(args) 39 | if subprocess.call(args, **kwargs) != 0: 40 | print 'error while running command: %s' % ' '.join(args) 41 | 42 | def realpath(*args): 43 | dirname = os.path.realpath(join(*args)) 44 | if not os.path.isdir(dirname) and dirname[-4] != '.': 45 | os.makedirs(dirname) 46 | return dirname 47 | 48 | class TestGit(unittest.TestCase): 49 | 50 | def setUp(self): 51 | self.addCleanup(os.chdir, os.getcwd()) 52 | self.wd = tempfile.mkdtemp(prefix='gitweb-') 53 | self.addCleanup(shutil.rmtree, self.wd) 54 | 55 | repos = realpath(self.wd, 'repos') 56 | repo = realpath(self.wd, 'repos', 'sample') 57 | port = get_free_port() 58 | self.url = 'http://127.0.0.1:%s/' % port 59 | 60 | config = realpath(self.wd, 'repos', 'config.ini') 61 | open(config, 'w').write(ini_file % locals()) 62 | 63 | cmd = ['bin/paster', 'serve', config] 64 | p = subprocess.Popen(cmd) #, stdout=subprocess.PIPE, stderr=subprocess.PIPE) 65 | self.addCleanup(kill, p.pid) 66 | 67 | os.chdir(repo) 68 | call('git', 'init') 69 | call('git', 'update-server-info') 70 | 71 | time.sleep(1) 72 | 73 | os.chdir(self.wd) 74 | 75 | def test_simple(self): 76 | url = self.url+'new.git' 77 | os.makedirs('new') 78 | os.chdir('new') 79 | call('git', 'init') 80 | open('README', 'w').write('test '*1024) 81 | call('git', 'add', 'README') 82 | call('git', 'commit', '-m', 'test') 83 | call('git', 'clone', '.', url) 84 | 85 | def test_existing_repo(self): 86 | url = self.url+'repo.git' 87 | call('git', 'clone', url) 88 | os.chdir('repo') 89 | open('README', 'w').write('test '*(1024*1024*2)) 90 | call('git', 'add', 'README') 91 | call('git', 'commit', '-m', 'test') 92 | call('git', 'push', 'origin', 'master') 93 | 94 | --------------------------------------------------------------------------------