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plugins/mod_http_files.lua @ 5253:ad45612199e0
mod_http_files: Avoid a bunch of table lookups
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 21 Dec 2012 08:14:33 +0100 |
parent | 5252:6209b9a0244b |
child | 5254:df3552822054 |
rev | line source |
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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 local show_file_list = module:get_option_boolean("http_files_show_list"); |
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19 |
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20 local mime_map = module:shared("mime").types; |
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21 if not mime_map then |
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22 mime_map = { |
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23 html = "text/html", htm = "text/html", |
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24 xml = "application/xml", |
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25 txt = "text/plain", |
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26 css = "text/css", |
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27 js = "application/javascript", |
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28 png = "image/png", |
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29 gif = "image/gif", |
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30 jpeg = "image/jpeg", jpg = "image/jpeg", |
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31 svg = "image/svg+xml", |
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32 }; |
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33 module:shared("mime").types = mime_map; |
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34 |
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35 local mime_types, err = open(module:get_option_string("mime_types_file", "/etc/mime.types"),"r"); |
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36 if mime_types then |
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37 local mime_data = mime_types:read("*a"); |
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38 mime_types:close(); |
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39 setmetatable(mime_map, { |
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40 __index = function(t, ext) |
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41 local typ = mime_data:match("\n(%S+)[^\n]*%s"..(ext:lower()).."%s") or "application/octet-stream"; |
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42 t[ext] = typ; |
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43 return typ; |
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44 end |
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45 }); |
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46 end |
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47 end |
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48 |
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49 local cache = setmetatable({}, { __mode = "kv" }); -- Let the garbage collector have it if it wants to. |
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50 |
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51 function serve_file(event, path) |
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52 local request, response = event.request, event.response; |
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53 local orig_path = request.path; |
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54 local full_path = http_base.."/"..path; |
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55 local attr = stat(full_path); |
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56 if not attr then |
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57 return 404; |
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58 end |
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59 |
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60 local request_headers, response_headers = request.headers, response.headers; |
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61 |
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62 local last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification); |
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63 response_headers.last_modified = last_modified; |
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64 |
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65 local etag = ("%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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66 response_headers.etag = etag; |
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67 |
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68 local if_none_match = request_headers.if_none_match |
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69 local if_modified_since = request_headers.if_modified_since; |
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70 if etag == if_none_match |
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71 or last_modified == if_modified_since then |
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72 return 304; |
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73 end |
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74 |
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75 local data = cache[path]; |
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76 if data then |
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77 response_headers.content_type = data.content_type; |
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78 data = data.data; |
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79 elseif attr.mode == "directory" then |
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80 if full_path:sub(-1) ~= "/" then |
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81 response_headers.location = orig_path.."/"; |
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82 return 301; |
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83 end |
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84 for i=1,#dir_indices do |
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85 if stat(full_path..dir_indices[i], "mode") == "file" then |
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86 return serve_file(event, path..dir_indices[i]); |
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87 end |
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88 end |
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89 |
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90 if not show_file_list then |
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91 return 403; |
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92 else |
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93 local html = require"util.stanza".stanza("html") |
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94 :tag("head"):tag("title"):text(path):up() |
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95 :tag("meta", { charset="utf-8" }):up() |
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96 :up() |
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97 :tag("body"):tag("h1"):text(path):up() |
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98 :tag("ul"); |
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99 for file in lfs.dir(full_path) do |
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100 if file:sub(1,1) ~= "." then |
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101 local attr = stat(full_path..file) or {}; |
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102 html:tag("li", { class = attr.mode }) |
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103 :tag("a", { href = file }):text(file) |
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104 :up():up(); |
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105 end |
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106 end |
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107 data = "<!DOCTYPE html>\n"..tostring(html); |
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mod_http_files: Fix caching the stringified directory index
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108 cache[path] = { data = data, content_type = mime_map.html; hits = 0 }; |
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mod_http_files: Avoid a bunch of table lookups
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109 response_headers.content_type = mime_map.html; |
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110 end |
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111 |
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mod_http_files: Cache data read from disk in a weak table
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112 else |
5252
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mod_http_files: No use in closing a file handle if we couldn't open it
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113 local f, err = open(full_path, "rb"); |
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114 if f then |
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115 data = f:read("*a"); |
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116 f:close(); |
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117 end |
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118 if not data then |
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119 return 403; |
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120 end |
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121 local ext = path:match("%.([^.]*)$"); |
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122 local content_type = mime_map[ext]; |
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123 cache[path] = { data = data; content_type = content_type; }; |
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parents:
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124 response_headers.content_type = content_type; |
3353
cd3cbf361f8f
mod_httpserver: Serve index.html if a request is made for a directory and it contains one (thanks Brian Cully)
Matthew Wild <mwild1@gmail.com>
parents:
2925
diff
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125 end |
5233
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mod_http_files: Return 404 faster if file does not exist
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126 |
4670
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127 return response:send(data); |
1667
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mod_httpserver: Set default file handler (you can now request static files as /*) and restructure code a bit
Matthew Wild <mwild1@gmail.com>
parents:
1552
diff
changeset
|
128 end |
1770
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mod_httpserver: Backport from trunk more thorough validation of URLs prior to processing
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129 |
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130 module:provides("http", { |
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parents:
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diff
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131 route = { |
4722
1138fd3d5846
mod_http_files: Specify method in HTTP route
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parents:
4716
diff
changeset
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132 ["GET /*"] = serve_file; |
4670
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133 }; |
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parents:
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diff
changeset
|
134 }); |
1667
c7bb2264e3b8
mod_httpserver: Set default file handler (you can now request static files as /*) and restructure code a bit
Matthew Wild <mwild1@gmail.com>
parents:
1552
diff
changeset
|
135 |