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# hgweb/request.py - An http request from either CGI or the standalone server.
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#
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# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import cgi
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import errno
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import socket
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from .common import (
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ErrorResponse,
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HTTP_NOT_MODIFIED,
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statusmessage,
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)
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from .. import (
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util,
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)
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shortcuts = {
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'cl': [('cmd', ['changelog']), ('rev', None)],
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'sl': [('cmd', ['shortlog']), ('rev', None)],
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'cs': [('cmd', ['changeset']), ('node', None)],
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'f': [('cmd', ['file']), ('filenode', None)],
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'fl': [('cmd', ['filelog']), ('filenode', None)],
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'fd': [('cmd', ['filediff']), ('node', None)],
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'fa': [('cmd', ['annotate']), ('filenode', None)],
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'mf': [('cmd', ['manifest']), ('manifest', None)],
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'ca': [('cmd', ['archive']), ('node', None)],
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'tags': [('cmd', ['tags'])],
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'tip': [('cmd', ['changeset']), ('node', ['tip'])],
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'static': [('cmd', ['static']), ('file', None)]
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}
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def normalize(form):
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# first expand the shortcuts
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for k in shortcuts.iterkeys():
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if k in form:
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for name, value in shortcuts[k]:
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if value is None:
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value = form[k]
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form[name] = value
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del form[k]
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# And strip the values
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for k, v in form.iteritems():
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form[k] = [i.strip() for i in v]
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return form
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class wsgirequest(object):
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"""Higher-level API for a WSGI request.
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WSGI applications are invoked with 2 arguments. They are used to
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instantiate instances of this class, which provides higher-level APIs
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for obtaining request parameters, writing HTTP output, etc.
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"""
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def __init__(self, wsgienv, start_response):
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version = wsgienv[r'wsgi.version']
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if (version < (1, 0)) or (version >= (2, 0)):
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raise RuntimeError("Unknown and unsupported WSGI version %d.%d"
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% version)
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self.inp = wsgienv[r'wsgi.input']
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self.err = wsgienv[r'wsgi.errors']
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self.threaded = wsgienv[r'wsgi.multithread']
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self.multiprocess = wsgienv[r'wsgi.multiprocess']
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self.run_once = wsgienv[r'wsgi.run_once']
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self.env = wsgienv
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self.form = normalize(cgi.parse(self.inp,
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self.env,
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keep_blank_values=1))
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self._start_response = start_response
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self.server_write = None
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self.headers = []
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def __iter__(self):
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return iter([])
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def read(self, count=-1):
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return self.inp.read(count)
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def drain(self):
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'''need to read all data from request, httplib is half-duplex'''
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length = int(self.env.get('CONTENT_LENGTH') or 0)
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for s in util.filechunkiter(self.inp, limit=length):
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pass
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def respond(self, status, type, filename=None, body=None):
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if self._start_response is not None:
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self.headers.append(('Content-Type', type))
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if filename:
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filename = (filename.rpartition('/')[-1]
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.replace('\\', '\\\\').replace('"', '\\"'))
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self.headers.append(('Content-Disposition',
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'inline; filename="%s"' % filename))
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if body is not None:
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self.headers.append(('Content-Length', str(len(body))))
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for k, v in self.headers:
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if not isinstance(v, str):
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raise TypeError('header value must be string: %r' % (v,))
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if isinstance(status, ErrorResponse):
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self.headers.extend(status.headers)
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if status.code == HTTP_NOT_MODIFIED:
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# RFC 2616 Section 10.3.5: 304 Not Modified has cases where
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# it MUST NOT include any headers other than these and no
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# body
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self.headers = [(k, v) for (k, v) in self.headers if
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k in ('Date', 'ETag', 'Expires',
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'Cache-Control', 'Vary')]
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status = statusmessage(status.code, str(status))
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elif status == 200:
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status = '200 Script output follows'
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elif isinstance(status, int):
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status = statusmessage(status)
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self.server_write = self._start_response(status, self.headers)
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self._start_response = None
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self.headers = []
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if body is not None:
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self.write(body)
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self.server_write = None
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def write(self, thing):
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if thing:
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try:
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self.server_write(thing)
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except socket.error as inst:
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if inst[0] != errno.ECONNRESET:
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raise
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def writelines(self, lines):
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for line in lines:
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self.write(line)
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def flush(self):
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return None
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def close(self):
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return None
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def wsgiapplication(app_maker):
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'''For compatibility with old CGI scripts. A plain hgweb() or hgwebdir()
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can and should now be used as a WSGI application.'''
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application = app_maker()
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def run_wsgi(env, respond):
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return application(env, respond)
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return run_wsgi
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