Common code for GET and HEAD commands. This sends the response code and MIME headers. Return value is either a file object (which has to be copied to the outputfile by the caller unless the command was HEAD, and must be closed by the caller under all circumstances),
(self)
| 719 | f.close() |
| 720 | |
| 721 | def send_head(self): |
| 722 | """Common code for GET and HEAD commands. |
| 723 | |
| 724 | This sends the response code and MIME headers. |
| 725 | |
| 726 | Return value is either a file object (which has to be copied |
| 727 | to the outputfile by the caller unless the command was HEAD, |
| 728 | and must be closed by the caller under all circumstances), or |
| 729 | None, in which case the caller has nothing further to do. |
| 730 | |
| 731 | """ |
| 732 | path = self.translate_path(self.path) |
| 733 | f = None |
| 734 | if os.path.isdir(path): |
| 735 | parts = urllib.parse.urlsplit(self.path) |
| 736 | if not parts.path.endswith(('/', '%2f', '%2F')): |
| 737 | # redirect browser - doing basically what apache does |
| 738 | self.send_response(HTTPStatus.MOVED_PERMANENTLY) |
| 739 | new_parts = (parts[0], parts[1], parts[2] + '/', |
| 740 | parts[3], parts[4]) |
| 741 | new_url = urllib.parse.urlunsplit(new_parts) |
| 742 | self.send_header("Location", new_url) |
| 743 | self.send_header("Content-Length", "0") |
| 744 | self.end_headers() |
| 745 | return None |
| 746 | for index in self.index_pages: |
| 747 | index = os.path.join(path, index) |
| 748 | if os.path.isfile(index): |
| 749 | path = index |
| 750 | break |
| 751 | else: |
| 752 | return self.list_directory(path) |
| 753 | ctype = self.guess_type(path) |
| 754 | # check for trailing "/" which should return 404. See Issue17324 |
| 755 | # The test for this was added in test_httpserver.py |
| 756 | # However, some OS platforms accept a trailingSlash as a filename |
| 757 | # See discussion on python-dev and Issue34711 regarding |
| 758 | # parsing and rejection of filenames with a trailing slash |
| 759 | if path.endswith("/"): |
| 760 | self.send_error(HTTPStatus.NOT_FOUND, "File not found") |
| 761 | return None |
| 762 | try: |
| 763 | f = open(path, 'rb') |
| 764 | except OSError: |
| 765 | self.send_error(HTTPStatus.NOT_FOUND, "File not found") |
| 766 | return None |
| 767 | |
| 768 | try: |
| 769 | fs = os.fstat(f.fileno()) |
| 770 | # Use browser cache if possible |
| 771 | if ("If-Modified-Since" in self.headers |
| 772 | and "If-None-Match" not in self.headers): |
| 773 | # compare If-Modified-Since and time of last file modification |
| 774 | try: |
| 775 | ims = email.utils.parsedate_to_datetime( |
| 776 | self.headers["If-Modified-Since"]) |
| 777 | except (TypeError, IndexError, OverflowError, ValueError): |
| 778 | # ignore ill-formed values |
no test coverage detected