def do_HEAD(self):
if self.path in GOOD_PATHS:
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.send_header('Connection', 'close')
self.send_header('Content-Length', str(len(PAGE_LOGIN)))
self.end_headers()
else:
content = (self.error_message_format %
{'code': 404, 'message': _quote_html('File not found'),
'explain': _quote_html('Nothing matches the given URI')})
body = content.encode('UTF-8', 'replace')
self.send_response(404, "File not found")
self.send_header("Content-Type", self.error_content_type)
self.send_header('Connection', 'close')
self.send_header('Content-Length', int(len(body)))
self.end_headers()
def send_error(self, code, message=None, explain=None):
"""Send and log an error reply.
Arguments are
* code: an HTTP error code
3 digits
* message: a simple optional 1 line reason phrase.
*( HTAB / SP / VCHAR / %x80-FF )
defaults to short entry matching the response code
* explain: a detailed message defaults to the long entry
matching the response code.
This sends an error response (so it must be called before any
output has been generated), logs the error, and finally sends
a piece of HTML explaining the error to the user.
"""
from http.server import _quote_html
try:
shortmsg, longmsg = self.responses[code]
except KeyError:
shortmsg, longmsg = '???', '???'
if message is None:
message = shortmsg
if explain is None:
explain = longmsg
self.log_error("code %d, message %s", code, message)
# using _quote_html to prevent Cross Site Scripting attacks (see bug #1100201)
content = (self.error_message_format % {
'code': code,
'message': _quote_html(message),
'explain': _quote_html(explain)
})
body = content.encode('UTF-8', 'replace')
self.send_response(code, message)
self.send_header("Content-Type", self.error_content_type)
self.send_header('Connection', 'close')
self.send_header('Content-Length', int(len(body)))
self.just_end_headers()
if (self.command != 'HEAD' and code >= 200 and code
not in (HTTPStatus.NO_CONTENT, HTTPStatus.NOT_MODIFIED)):
self.wfile.write(body)
def send_error(self, code, message=None):
# Overwritten to not close connection on errors and provide
# content-length
try:
shortmsg, longmsg = self.responses[code]
except KeyError:
shortmsg, longmsg = '???', '???'
if message is None:
message = shortmsg
explain = longmsg
self.log_error("code %d, message %s", code, message)
# using _quote_html to prevent Cross Site Scripting attacks (see bug #1100201)
content = (self.error_message_format % {'code': code, 'message': _quote_html(message),
'explain': explain}).encode('utf-8', 'replace')
self.send_response(code, message)
self.send_header("Content-Type", self.error_content_type)
self.send_header("Content-Length", str(len(content)))
self.end_headers()
if self.command != 'HEAD' and code >= 200 and code not in (204, 304):
self.wfile.write(content)
