# $Id: HTTPServerHandler.py 2133 2006-09-06 18:52:56Z dairiki $ # HTTPServerHandler.py - standalone HTTP server for Myghty # Copyright (C) 2004, 2005 Michael Bayer mike_mp@zzzcomputing.com # # This module is part of Myghty and is released under # the MIT License: http://www.opensource.org/licenses/mit-license.php # # import myghty.interp import myghty.request import myghty.resolver import myghty.exception as exception from myghty.buffer import LinePrinter import myghty.http.HTTPHandler as HTTPHandler import BaseHTTPServer, SocketServer from myghty.util import * import os, sys, cgi, re, types, traceback import mimetypes,posixpath,shutil,urllib class HTTPServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer): """main server class. just overrides the basic webserver.""" def __init__(self, port = 8000, docroot = None, handlers = None, text_only = True, **params): self.params = params self.port = port self.text_only = text_only self.daemon_threads = False server_address = ('', port) if handlers is None: handlers = [{r'(.*)':HSHandler(**params)}] if docroot is not None: if not (isinstance(docroot, types.ListType)): handlers.append(docroot) else: handlers += docroot self.handlers = OrderedDict(handlers) BaseHTTPServer.HTTPServer.__init__(self, server_address, HTTPRequestHandler) class HTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler): """request handling for the webserver. this is the engine of the standalone server.""" def do_POST(self): self.handle_request() def do_GET(self): self.handle_request() def handle_request(self): httpreq = HSHTTPRequest(self) try: if ( self.server.text_only and httpreq.content_type[0:4] != "text" ): self.serve_file(httpreq) else: for key in self.server.handlers.keys(): match = re.match(key, httpreq.path_info) if match: handler = self.server.handlers[key] if match.lastindex >= 1: httpreq.converted_path_info = match.group(1) else: httpreq.converted_path_info = httpreq.path_info if type(handler) == str: self.serve_file(httpreq) else: handler.handle(httpreq) return except: traceback.print_exc(file=sys.stdout) self.send_error(500, "Server Error") # methods ripped from SimpleHTTPServer to handle sending binary # files, non-myghty files def translate_path(self, path): """Translate a /-separated PATH to the local filename syntax. Components that mean special things to the local file system (e.g. drive or directory names) are ignored. (XXX They should probably be diagnosed.) """ for key in self.server.handlers.keys(): match = re.match(key, path) if match: root = self.server.handlers[key] if type(root) != str: continue if match.lastindex >=1: path = match.group(1) break else: return None path = posixpath.normpath(urllib.unquote(path)) words = path.split('/') words = filter(None, words) path = root for word in words: drive, word = posixpath.splitdrive(word) head, word = posixpath.split(word) if word in (os.curdir, os.pardir): continue path = posixpath.join(path, word) return path def guess_type(self, path): """Guess the type of a file. Argument is a PATH (a filename). Return value is a string of the form type/subtype, usable for a MIME Content-type header. The default implementation looks the file's extension up in the table self.extensions_map, using text/plain as a default; however it would be permissible (if slow) to look inside the data to make a better guess. """ base, ext = posixpath.splitext(path) if ext in self.extensions_map: return self.extensions_map[ext] ext = ext.lower() if ext in self.extensions_map: return self.extensions_map[ext] else: return self.extensions_map[''] extensions_map = mimetypes.types_map.copy() extensions_map.update({ '': 'text/html', # Default '.myt':'text/html', '.myc':'text/html', '.py': 'text/plain', '.c': 'text/plain', '.h': 'text/plain', }) def serve_file(self, httpreq): ctype = httpreq.content_type if ctype.startswith('text/'): mode = 'r' else: mode = 'rb' path = httpreq.filename if path is None: self.send_error(404, "File not found") return try: f = open(path, mode) except IOError: self.send_error(404, "File not found") return self.send_response(200) self.send_header("Content-type", ctype) self.send_header("Content-Length", str(os.fstat(f.fileno())[6])) self.end_headers() shutil.copyfileobj(f, self.wfile) f.close() # now, the myghty stuff. def handle(httpreq, interpreter_name = None, **params): return HTTPHandler.handle_http(HSHandler, interpreter_name = interpreter_name, httpreq = httpreq, **params) class HSHandler(HTTPHandler.HTTPHandler): def __init__(self, **params): HTTPHandler.HTTPHandler.__init__(self, None, LinePrinter(sys.stderr), **params) def do_get_init_params(self, httpreq, **params): return params def do_get_resolver(self, **params): return HSResolver(**params) def do_make_request_impl(self, httpreq, **params): return HSRequestImpl(httpreq, **params) def do_get_component(self, httpreq, **params): return httpreq.converted_path_info def do_handle_result(self, httpreq, status, message): # in the case that we had an error, do a send_error, which shows the # BaseHTTPServer's error page # for codes below 300, do nothing; this will send no content, unless # the application has (as it does for a redirect) if status >= 400: if message is not None: httpreq.handler.send_error(status, message) else: httpreq.handler.send_error(status) def handle(self, httpreq): HTTPHandler.HTTPHandler.handle(self, httpreq) class HSHTTPRequest(HTTPHandler.HTTPRequest): def __init__(self, httpreqhandler): HTTPHandler.HTTPRequest.__init__(self) self.handler = httpreqhandler headers = httpreqhandler.headers for key in headers.keys(): self.headers_in.add(key, headers[key]) self.method = httpreqhandler.command match = re.match(r"([^\?]*)(?:\?(.*))?", httpreqhandler.path) if match: self.path_info = match.group(1) if match.lastindex >=2: self.args = match.group(2) else: self.args = None else: self.path_info = None self.args = None self.content_type = self.handler.guess_type(self.path_info) self.filename = self.handler.translate_path(self.path_info) # cobble together a cgi.FieldStorage object from what we have cgienviron = { 'QUERY_STRING': self.args, 'REQUEST_METHOD': self.method, } if self.headers_in.has_key('content-type'): cgienviron['CONTENT_TYPE'] = self.headers_in['content-type'] if self.headers_in.has_key('content-length'): cgienviron['CONTENT_LENGTH'] = self.headers_in['content-length'] self.fieldstorage = cgi.FieldStorage( fp = self.handler.rfile, environ = cgienviron, keep_blank_values = True ) def do_send_headers(self): self.handler.send_response(self.status) headers = self.get_response_headers() for key, value in headers.iteritems(): self.handler.send_header(key, value) self.handler.end_headers() class HSResolver(HTTPHandler.HTTPResolver): pass class HSWriter(HTTPHandler.HTTPWriter):pass class HSRequestImpl(HTTPHandler.HTTPRequestImpl): def __init__(self, httpreq, **params): HTTPHandler.HTTPRequestImpl.__init__(self, httpreq, LinePrinter(sys.stderr), LinePrinter(sys.stderr), **params) def do_make_request_args(self, httpreq, **params): return self.request_args_from_fieldstorage(httpreq.fieldstorage) def do_get_out_buffer(self, httpreq, out_buffer = None, **params): if out_buffer is None: return HSWriter(httpreq, httpreq.handler.wfile, **params) else: return out_buffer if __name__ == '__main__': params = {} for item in sys.argv[1:]: (key, value) = item.split('=', 1) params[key] = eval(value) httpd = HTTPServer(**params) print "HTTPServer listening on port %d" % httpd.port httpd.serve_forever()