Example #1
0
    def getChild(self, path, request):
        """Find the appropriate child resource depending on request type

        Possible URLs:
        - /foo/bar/info/refs -> info refs (file / SmartHTTP hybrid)
        - /foo/bar/git-upload-pack -> SmartHTTP RPC
        - /foo/bar/git-receive-pack -> SmartHTTP RPC
        - /foo/bar/HEAD -> file (dumb http)
        - /foo/bar/objects/* -> file (dumb http)
        """
        path = request.path  # alternatively use path + request.postpath
        pathparts = path.split('/')
        writerequired = False
        script_name = '/'
        new_path = path
        resource = NoResource()

        # Path lookup / translation
        path_info = self.git_configuration.path_lookup(path,
                                                       protocol_hint='http')
        if path_info is None:
            log.msg('User %s tried to access %s '
                    'but the lookup failed' % (self.username, path))
            return resource

        log.msg('Lookup of %s gave %r' % (path, path_info))

        if (path_info['repository_fs_path'] is None
                and path_info['repository_base_fs_path'] is None):
            log.msg('Neither a repository base nor a repository were returned')
            return resource

        # split script_name / new_path according to path info
        if path_info['repository_base_url_path'] is not None:
            script_name = '/'
            script_name += path_info['repository_base_url_path'].strip('/')
            new_path = path[len(script_name.rstrip('/')):]

        # since pretty much everything needs read access, check for it now
        if not self.authnz.can_read(self.username, path_info):
            if self.username is None:
                return UnauthorizedResource(self.credentialFactories)
            else:
                return ForbiddenResource("You don't have read access")

        # Smart HTTP requests
        # /info/refs
        if (len(pathparts) >= 2 and pathparts[-2] == 'info'
                and pathparts[-1] == 'refs'):
            writerequired = ('service' in request.args and
                             request.args['service'][0] == 'git-receive-pack')
            resource = InfoRefs(path_info['repository_fs_path'])

        # /git-upload-pack (client pull)
        elif len(pathparts) >= 1 and pathparts[-1] == 'git-upload-pack':
            cmd = 'git'
            args = [
                os.path.basename(cmd), 'upload-pack', '--stateless-rpc',
                path_info['repository_fs_path']
            ]
            resource = GitCommand(cmd, args)
            request.setHeader('Content-Type',
                              'application/x-git-upload-pack-result')

        # /git-receive-pack (client push)
        elif len(pathparts) >= 1 and pathparts[-1] == 'git-receive-pack':
            writerequired = True
            cmd = 'git'
            args = [
                os.path.basename(cmd), 'receive-pack', '--stateless-rpc',
                path_info['repository_fs_path']
            ]
            resource = GitCommand(cmd, args)
            request.setHeader('Content-Type',
                              'application/x-git-receive-pack-result')

        # static files as specified in file_headers or fallback webfrontend
        else:
            # determine the headers for this file
            filename, headers = None, None
            for matcher, get_headers in file_headers.items():
                m = matcher.match(path)
                if m:
                    filename = m.group(1)
                    headers = get_headers()
                    break

            if filename is not None:
                for key, val in headers.items():
                    request.setHeader(key, val)

                log.msg(
                    "Returning file %s" %
                    os.path.join(path_info['repository_fs_path'], filename))
                resource = File(
                    os.path.join(path_info['repository_fs_path'], filename),
                    headers['Content-Type'])
                resource.isLeaf = True  # static file -> it is a leaf

            else:
                # No match -> fallback to git viewer
                if script_name is not None:
                    # patch pre/post path of request according to
                    # script_name and path
                    request.prepath = script_name.strip('/').split('/')
                    if request.prepath == ['']:
                        request.prepath = []
                    request.postpath = new_path.lstrip('/').split('/')

                    log.msg("pre and post: %r %r" %
                            (request.prepath, request.postpath))

                # If the resource has a withEnviron function, it's
                # probably our own flavour of WSGIResource that
                # supports passing further args for the environ
                if hasattr(self.git_viewer, "withEnviron"):
                    # set wsgirouting args
                    routing_args = {
                        'repository_path': path_info['repository_fs_path'],
                        'repository_base': path_info['repository_base_fs_path']
                    }
                    if 'repository_clone_urls' in path_info:
                        routing_args['repository_clone_urls'] = path_info[
                            'repository_clone_urls']
                    resource = self.git_viewer.withEnviron(
                        {'wsgiorg.routing_args': ([], routing_args)})
                else:
                    resource = self.git_viewer

        # before returning the resource, check if write access is required
        # and enforce privileges accordingly
        # anonymous (username = None) will never be granted write access
        if writerequired and (
                self.username is None
                or not self.authnz.can_write(self.username, path_info)):
            if self.username is None:
                return UnauthorizedResource(self.credentialFactories)
            else:
                return ForbiddenResource("You don't have write access")

        return resource
Example #2
0
    def getChild(self, path, request):
        """Find the appropriate child resource depending on request type

        Possible URLs:
        - /foo/bar/info/refs -> info refs (file / SmartHTTP hybrid)
        - /foo/bar/git-upload-pack -> SmartHTTP RPC
        - /foo/bar/git-receive-pack -> SmartHTTP RPC
        - /foo/bar/HEAD -> file (dumb http)
        - /foo/bar/objects/* -> file (dumb http)
        """
        path = request.path  # alternatively use path + request.postpath
        pathparts = path.split('/')
        writerequired = False
        script_name = '/'
        new_path = path
        resource = NoResource()

        # Path lookup / translation
        path_info = self.git_configuration.path_lookup(path,
                                                       protocol_hint='http')
        if path_info is None:
            log.msg('User %s tried to access %s '
                    'but the lookup failed' % (self.username, path))
            return resource

        log.msg('Lookup of %s gave %r' % (path, path_info))

        if (path_info['repository_fs_path'] is None and
            path_info['repository_base_fs_path'] is None):
            log.msg('Neither a repository base nor a repository were returned')
            return resource

        # split script_name / new_path according to path info
        if path_info['repository_base_url_path'] is not None:
            script_name = '/'
            script_name += path_info['repository_base_url_path'].strip('/')
            new_path = path[len(script_name.rstrip('/')):]

        # since pretty much everything needs read access, check for it now
        if not self.authnz.can_read(self.username, path_info):
            if self.username is None:
                return UnauthorizedResource(self.credentialFactories)
            else:
                return ForbiddenResource("You don't have read access")

        # Smart HTTP requests
        # /info/refs
        if (len(pathparts) >= 2 and
            pathparts[-2] == 'info' and
            pathparts[-1] == 'refs'):
            writerequired = ('service' in request.args and
                             request.args['service'][0] == 'git-receive-pack')
            resource = InfoRefs(path_info['repository_fs_path'])

        # /git-upload-pack (client pull)
        elif len(pathparts) >= 1 and pathparts[-1] == 'git-upload-pack':
            cmd = 'git'
            args = [os.path.basename(cmd), 'upload-pack', '--stateless-rpc',
                    path_info['repository_fs_path']]
            resource = GitCommand(cmd, args)
            request.setHeader('Content-Type',
                              'application/x-git-upload-pack-result')

        # /git-receive-pack (client push)
        elif len(pathparts) >= 1 and pathparts[-1] == 'git-receive-pack':
            writerequired = True
            cmd = 'git'
            args = [os.path.basename(cmd), 'receive-pack',
                    '--stateless-rpc', path_info['repository_fs_path']]
            resource = GitCommand(cmd, args)
            request.setHeader('Content-Type',
                              'application/x-git-receive-pack-result')

        # static files as specified in file_headers or fallback webfrontend
        else:
            # determine the headers for this file
            filename, headers = None, None
            for matcher, get_headers in file_headers.items():
                m = matcher.match(path)
                if m:
                    filename = m.group(1)
                    headers = get_headers()
                    break

            if filename is not None:
                for key, val in headers.items():
                    request.setHeader(key, val)

                log.msg("Returning file %s" % os.path.join(
                                    path_info['repository_fs_path'], filename))
                resource = File(os.path.join(path_info['repository_fs_path'],
                                        filename), headers['Content-Type'])
                resource.isLeaf = True  # static file -> it is a leaf

            else:
                # No match -> fallback to git viewer
                if script_name is not None:
                    # patch pre/post path of request according to
                    # script_name and path
                    request.prepath = script_name.strip('/').split('/')
                    if request.prepath == ['']:
                        request.prepath = []
                    request.postpath = new_path.lstrip('/').split('/')

                    log.msg("pre and post: %r %r" % (request.prepath,
                                                     request.postpath))

                # If the resource has a withEnviron function, it's
                # probably our own flavour of WSGIResource that
                # supports passing further args for the environ
                if hasattr(self.git_viewer, "withEnviron"):
                    # set wsgirouting args
                    routing_args = {
                        'repository_path': path_info['repository_fs_path'],
                        'repository_base': path_info['repository_base_fs_path']
                    }
                    if 'repository_clone_urls' in path_info:
                        routing_args['repository_clone_urls'] = path_info['repository_clone_urls']
                    resource = self.git_viewer.withEnviron(
                                    {'wsgiorg.routing_args': ([], routing_args)})
                else:
                    resource = self.git_viewer

        # before returning the resource, check if write access is required
        # and enforce privileges accordingly
        # anonymous (username = None) will never be granted write access
        if writerequired and (self.username is None or
                              not self.authnz.can_write(self.username,
                                                        path_info)):
            if self.username is None:
                return UnauthorizedResource(self.credentialFactories)
            else:
                return ForbiddenResource("You don't have write access")

        return resource