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Diffstat (limited to 'Lib/dos-8x3/cgihttps.py')
| -rwxr-xr-x | Lib/dos-8x3/cgihttps.py | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/Lib/dos-8x3/cgihttps.py b/Lib/dos-8x3/cgihttps.py new file mode 100755 index 0000000..837f7c2 --- /dev/null +++ b/Lib/dos-8x3/cgihttps.py @@ -0,0 +1,203 @@ +"""CGI-savvy HTTP Server. + +This module builds on SimpleHTTPServer by implementing GET and POST +requests to cgi-bin scripts. + +""" + + +__version__ = "0.3" + + +import os +import sys +import time +import socket +import string +import urllib +import BaseHTTPServer +import SimpleHTTPServer + + +class CGIHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): + + """Complete HTTP server with GET, HEAD and POST commands. + + GET and HEAD also support running CGI scripts. + + The POST command is *only* implemented for CGI scripts. + + """ + + def do_POST(self): + """Serve a POST request. + + This is only implemented for CGI scripts. + + """ + + if self.is_cgi(): + self.run_cgi() + else: + self.send_error(501, "Can only POST to CGI scripts") + + def send_head(self): + """Version of send_head that support CGI scripts""" + if self.is_cgi(): + return self.run_cgi() + else: + return SimpleHTTPServer.SimpleHTTPRequestHandler.send_head(self) + + def is_cgi(self): + """test whether PATH corresponds to a CGI script. + + Return a tuple (dir, rest) if PATH requires running a + CGI script, None if not. Note that rest begins with a + slash if it is not empty. + + The default implementation tests whether the path + begins with one of the strings in the list + self.cgi_directories (and the next character is a '/' + or the end of the string). + + """ + + path = self.path + + for x in self.cgi_directories: + i = len(x) + if path[:i] == x and (not path[i:] or path[i] == '/'): + self.cgi_info = path[:i], path[i+1:] + return 1 + return 0 + + cgi_directories = ['/cgi-bin', '/htbin'] + + def run_cgi(self): + """Execute a CGI script.""" + dir, rest = self.cgi_info + i = string.rfind(rest, '?') + if i >= 0: + rest, query = rest[:i], rest[i+1:] + else: + query = '' + i = string.find(rest, '/') + if i >= 0: + script, rest = rest[:i], rest[i:] + else: + script, rest = rest, '' + scriptname = dir + '/' + script + scriptfile = self.translate_path(scriptname) + if not os.path.exists(scriptfile): + self.send_error(404, "No such CGI script (%s)" % `scriptname`) + return + if not os.path.isfile(scriptfile): + self.send_error(403, "CGI script is not a plain file (%s)" % + `scriptname`) + return + if not executable(scriptfile): + self.send_error(403, "CGI script is not executable (%s)" % + `scriptname`) + return + nobody = nobody_uid() + self.send_response(200, "Script output follows") + self.wfile.flush() # Always flush before forking + pid = os.fork() + if pid != 0: + # Parent + pid, sts = os.waitpid(pid, 0) + if sts: + self.log_error("CGI script exit status x%x" % sts) + return + # Child + try: + # Reference: http://hoohoo.ncsa.uiuc.edu/cgi/env.html + # XXX Much of the following could be prepared ahead of time! + env = {} + env['SERVER_SOFTWARE'] = self.version_string() + env['SERVER_NAME'] = self.server.server_name + env['GATEWAY_INTERFACE'] = 'CGI/1.1' + env['SERVER_PROTOCOL'] = self.protocol_version + env['SERVER_PORT'] = str(self.server.server_port) + env['REQUEST_METHOD'] = self.command + uqrest = urllib.unquote(rest) + env['PATH_INFO'] = uqrest + env['PATH_TRANSLATED'] = self.translate_path(uqrest) + env['SCRIPT_NAME'] = scriptname + if query: + env['QUERY_STRING'] = query + host = self.address_string() + if host != self.client_address[0]: + env['REMOTE_HOST'] = host + env['REMOTE_ADDR'] = self.client_address[0] + # AUTH_TYPE + # REMOTE_USER + # REMOTE_IDENT + env['CONTENT_TYPE'] = self.headers.type + length = self.headers.getheader('content-length') + if length: + env['CONTENT_LENGTH'] = length + accept = [] + for line in self.headers.getallmatchingheaders('accept'): + if line[:1] in string.whitespace: + accept.append(string.strip(line)) + else: + accept = accept + string.split(line[7:]) + env['HTTP_ACCEPT'] = string.joinfields(accept, ',') + ua = self.headers.getheader('user-agent') + if ua: + env['HTTP_USER_AGENT'] = ua + # XXX Other HTTP_* headers + import regsub + decoded_query = regsub.gsub('+', ' ', query) + try: + os.setuid(nobody) + except os.error: + pass + os.dup2(self.rfile.fileno(), 0) + os.dup2(self.wfile.fileno(), 1) + print scriptfile, script, decoded_query + os.execve(scriptfile, + [script, decoded_query], + env) + except: + self.server.handle_error(self.request, self.client_address) + os._exit(127) + + +nobody = None + +def nobody_uid(): + """Internal routine to get nobody's uid""" + global nobody + if nobody: + return nobody + import pwd + try: + nobody = pwd.getpwnam('nobody')[2] + except pwd.error: + nobody = 1 + max(map(lambda x: x[2], pwd.getpwall())) + return nobody + + +def executable(path): + """Test for executable file.""" + try: + st = os.stat(path) + except os.error: + return 0 + return st[0] & 0111 != 0 + + +def test(HandlerClass = CGIHTTPRequestHandler, + ServerClass = BaseHTTPServer.HTTPServer): + import sys + if sys.argv[1:2] == ['-r']: + db = MyArchive() + db.regenindices() + return + SimpleHTTPServer.test(HandlerClass, ServerClass) + + +if __name__ == '__main__': + test() |