prosody
e0373e0dd048
plugins/mod_http_files.lua

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plugins/mod_http_files.lua @ 5235:e0373e0dd048

mod_http_files: Add Last-Modified header
author Kim Alvefur <zash@zash.se>
date Tue, 11 Dec 2012 22:30:50 +0100
parent 5234:a9f0a1becc66
child 5236:8d116a0cdacd
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 module:depends("http");
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10 local lfs = require "lfs";
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11
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12 local os_date = os.date;
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13 local open = io.open;
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14 local stat = lfs.attributes;
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15
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16 local http_base = module:get_option_string("http_files_dir", module:get_option_string("http_path", "www_files"));
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17 local dir_indices = module:get_option("http_files_index", { "index.html", "index.htm" });
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18
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19 -- TODO: Should we read this from /etc/mime.types if it exists? (startup time...?)
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20 local mime_map = {
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21 html = "text/html";
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22 htm = "text/html";
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23 xml = "text/xml";
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24 xsl = "text/xml";
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25 txt = "text/plain; charset=utf-8";
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26 js = "text/javascript";
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27 css = "text/css";
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28 };
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29
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30 function serve_file(event, path)
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31 local request, response = event.request, event.response;
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32 local orig_path = request.path;
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33 local full_path = http_base.."/"..path;
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34 local attr = stat(full_path);
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35 if not attr then
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36 return 404;
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37 end
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38
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39 response.headers.last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification);
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40
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41 local tag = ("%02x-%x-%x-%x"):format(attr.dev or 0, attr.ino or 0, attr.size or 0, attr.modification or 0);
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42 response.headers.etag = tag;
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43 if tag == request.headers.if_none_match then
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44 return 304;
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45 end
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46
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47 if attr.mode == "directory" then
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48 if full_path:sub(-1) ~= "/" then
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49 response.headers.location = orig_path.."/";
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50 return 301;
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51 end
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52 for i=1,#dir_indices do
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53 if stat(full_path..dir_indices[i], "mode") == "file" then
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54 return serve_file(event, path..dir_indices[i]);
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55 end
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56 end
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57
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58 -- TODO File listing
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59 return 403;
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60 end
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61
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62 local f, err = open(full_path, "rb");
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63 if not f then
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64 module:log("warn", "Failed to open file: %s", err);
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65 return 404;
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66 end
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67 local data = f:read("*a");
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68 f:close();
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69 if not data then
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70 return 403;
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71 end
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72 local ext = path:match("%.([^.]*)$");
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73 response.headers.content_type = mime_map[ext]; -- Content-Type should be nil when not known
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74 return response:send(data);
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75 end
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76
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77 module:provides("http", {
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78 route = {
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79 ["GET /*"] = serve_file;
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80 };
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81 });
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82