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plugins/mod_http_files.lua @ 7490:b75b08af7a78
mod_http_files: Switch to use util.cache for cache
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 11 Jul 2016 12:17:59 +0200 |
parent | 7487:88a0a947e58c |
child | 7491:491975f5d383 |
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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 server = require"net.http.server"; |
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11 local lfs = require "lfs"; |
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12 |
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mod_http_files: Add Last-Modified header
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13 local os_date = os.date; |
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14 local open = io.open; |
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15 local stat = lfs.attributes; |
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16 local build_path = require"socket.url".build_path; |
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mod_http_files: Strip path separator from end of paths, was broken on Windows (thanks Junne)
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17 local path_sep = package.config:sub(1,1); |
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18 |
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19 local base_path = module:get_option_string("http_files_dir", module:get_option_string("http_path")); |
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20 local cache_size = module:get_option_number("http_files_cache_size", 128); |
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21 local dir_indices = module:get_option("http_index_files", { "index.html", "index.htm" }); |
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22 local directory_index = module:get_option_boolean("http_dir_listing"); |
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23 |
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mod_http_files: Put the MIME type map in a global shared table instead of per-host
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24 local mime_map = module:shared("/*/http_files/mime").types; |
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25 if not mime_map then |
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26 mime_map = { |
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27 html = "text/html", htm = "text/html", |
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28 xml = "application/xml", |
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29 txt = "text/plain", |
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30 css = "text/css", |
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31 js = "application/javascript", |
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32 png = "image/png", |
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33 gif = "image/gif", |
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34 jpeg = "image/jpeg", jpg = "image/jpeg", |
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35 svg = "image/svg+xml", |
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36 }; |
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37 module:shared("/*/http_files/mime").types = mime_map; |
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38 |
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39 local mime_types, err = open(module:get_option_string("mime_types_file", "/etc/mime.types"),"r"); |
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40 if mime_types then |
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41 local mime_data = mime_types:read("*a"); |
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42 mime_types:close(); |
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43 setmetatable(mime_map, { |
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44 __index = function(t, ext) |
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45 local typ = mime_data:match("\n(%S+)[^\n]*%s"..(ext:lower()).."%s") or "application/octet-stream"; |
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46 t[ext] = typ; |
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47 return typ; |
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48 end |
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49 }); |
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50 end |
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51 end |
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52 |
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53 local forbidden_chars_pattern = "[/%z]"; |
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54 if prosody.platform == "windows" then |
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55 forbidden_chars_pattern = "[/%z\001-\031\127\"*:<>?|]" |
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56 end |
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57 |
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58 local urldecode = require "util.http".urldecode; |
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59 function sanitize_path(path) |
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60 if not path then return end |
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61 local out = {}; |
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62 |
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63 local c = 0; |
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64 for component in path:gmatch("([^/]+)") do |
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65 component = urldecode(component); |
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66 if component:find(forbidden_chars_pattern) then |
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67 return nil; |
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68 elseif component == ".." then |
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69 if c <= 0 then |
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70 return nil; |
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71 end |
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72 out[c] = nil; |
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73 c = c - 1; |
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74 elseif component ~= "." then |
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75 c = c + 1; |
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76 out[c] = component; |
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77 end |
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78 end |
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79 if path:sub(-1,-1) == "/" then |
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80 out[c+1] = ""; |
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81 end |
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82 return "/"..table.concat(out, "/"); |
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83 end |
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84 |
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85 local cache = require "util.cache".new(cache_size); |
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86 |
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87 function serve(opts) |
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88 if type(opts) ~= "table" then -- assume path string |
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89 opts = { path = opts }; |
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90 end |
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91 local base_path = opts.path; |
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92 local dir_indices = opts.index_files or dir_indices; |
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93 local directory_index = opts.directory_index; |
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94 local function serve_file(event, path) |
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95 local request, response = event.request, event.response; |
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96 local sanitized_path = sanitize_path(path); |
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97 if path and not sanitized_path then |
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98 return 400; |
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99 end |
7228
b5b7ae2901e6
mod_http_files: Fix traceback when serving a non-wildcard path (fixes #611)
Kim Alvefur <zash@zash.se>
parents:
7058
diff
changeset
|
100 path = sanitized_path; |
7058
e9f07febafb3
mod_http_files: Santize the path relative to our base URL before translating it to a filesystem path, fixes a relative path traversal vulnerability
Matthew Wild <mwild1@gmail.com>
parents:
6873
diff
changeset
|
101 local orig_path = sanitize_path(request.path); |
7229
dcc8ed11173c
mod_http_files: Don't prepend / to path twice, sanitize path does this already
Kim Alvefur <zash@zash.se>
parents:
7228
diff
changeset
|
102 local full_path = base_path .. (path or ""):gsub("/", path_sep); |
6872
eb28067faadf
mod_http_files: Strip trailing directory separator regardless of directionality of the slash (fixes #545)
Kim Alvefur <zash@zash.se>
parents:
6030
diff
changeset
|
103 local attr = stat(full_path:match("^.*[^\\/]")); -- Strip trailing path separator because Windows |
5262
4e58fde55594
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Kim Alvefur <zash@zash.se>
parents:
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|
104 if not attr then |
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105 return 404; |
4e58fde55594
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Kim Alvefur <zash@zash.se>
parents:
5261
diff
changeset
|
106 end |
5248
13553f4132a8
mod_http_files: Compare If-Modified-Since to last modification date
Kim Alvefur <zash@zash.se>
parents:
5247
diff
changeset
|
107 |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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changeset
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108 local request_headers, response_headers = request.headers, response.headers; |
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diff
changeset
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109 |
4e58fde55594
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|
110 local last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification); |
4e58fde55594
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Kim Alvefur <zash@zash.se>
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diff
changeset
|
111 response_headers.last_modified = last_modified; |
5234
a9f0a1becc66
mod_http_files: Add ETag and check If-None-Match to allow client-side cache
Kim Alvefur <zash@zash.se>
parents:
5233
diff
changeset
|
112 |
7487
88a0a947e58c
mod_http_files: send valid ETag header
Anton Shestakov <av6@dwimlabs.net>
parents:
7231
diff
changeset
|
113 local etag = ('"%02x-%x-%x-%x"'):format(attr.dev or 0, attr.ino or 0, attr.size or 0, attr.modification or 0); |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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parents:
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changeset
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114 response_headers.etag = etag; |
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mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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diff
changeset
|
115 |
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116 local if_none_match = request_headers.if_none_match |
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117 local if_modified_since = request_headers.if_modified_since; |
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118 if etag == if_none_match |
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parents:
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changeset
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119 or (not if_none_match and last_modified == if_modified_since) then |
4e58fde55594
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parents:
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changeset
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120 return 304; |
4868
550f0a5e85c5
mod_http_files: Respond with a 301 redirect for directories to append a / (fixes relative links)
Kim Alvefur <zash@zash.se>
parents:
4722
diff
changeset
|
121 end |
550f0a5e85c5
mod_http_files: Respond with a 301 redirect for directories to append a / (fixes relative links)
Kim Alvefur <zash@zash.se>
parents:
4722
diff
changeset
|
122 |
7490
b75b08af7a78
mod_http_files: Switch to use util.cache for cache
Kim Alvefur <zash@zash.se>
parents:
7487
diff
changeset
|
123 local data = cache:get(orig_path); |
5262
4e58fde55594
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|
124 if data and data.etag == etag then |
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mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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|
125 response_headers.content_type = data.content_type; |
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changeset
|
126 data = data.data; |
5264
700ff21a0451
mod_http_files: Work with non-wildcard-routes. Key cache on the original HTTP path.
Kim Alvefur <zash@zash.se>
parents:
5263
diff
changeset
|
127 elseif attr.mode == "directory" and path then |
5262
4e58fde55594
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128 if full_path:sub(-1) ~= "/" then |
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129 local path = { is_absolute = true, is_directory = true }; |
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130 for dir in orig_path:gmatch("[^/]+") do path[#path+1]=dir; end |
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|
131 response_headers.location = build_path(path); |
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132 return 301; |
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|
133 end |
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|
134 for i=1,#dir_indices do |
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parents:
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diff
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|
135 if stat(full_path..dir_indices[i], "mode") == "file" then |
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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parents:
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diff
changeset
|
136 return serve_file(event, path..dir_indices[i]); |
5238
0cc0359d8c39
mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents:
5237
diff
changeset
|
137 end |
0cc0359d8c39
mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents:
5237
diff
changeset
|
138 end |
5262
4e58fde55594
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parents:
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diff
changeset
|
139 |
5263
736e7ec8cd2e
mod_http_files: Replace file listing with an event, allowing a different plugin to generate it
Kim Alvefur <zash@zash.se>
parents:
5262
diff
changeset
|
140 if directory_index then |
736e7ec8cd2e
mod_http_files: Replace file listing with an event, allowing a different plugin to generate it
Kim Alvefur <zash@zash.se>
parents:
5262
diff
changeset
|
141 data = server._events.fire_event("directory-index", { path = request.path, full_path = full_path }); |
736e7ec8cd2e
mod_http_files: Replace file listing with an event, allowing a different plugin to generate it
Kim Alvefur <zash@zash.se>
parents:
5262
diff
changeset
|
142 end |
736e7ec8cd2e
mod_http_files: Replace file listing with an event, allowing a different plugin to generate it
Kim Alvefur <zash@zash.se>
parents:
5262
diff
changeset
|
143 if not data then |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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parents:
5261
diff
changeset
|
144 return 403; |
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mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
Kim Alvefur <zash@zash.se>
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5261
diff
changeset
|
145 end |
5264
700ff21a0451
mod_http_files: Work with non-wildcard-routes. Key cache on the original HTTP path.
Kim Alvefur <zash@zash.se>
parents:
5263
diff
changeset
|
146 cache[orig_path] = { data = data, content_type = mime_map.html; etag = etag; }; |
5263
736e7ec8cd2e
mod_http_files: Replace file listing with an event, allowing a different plugin to generate it
Kim Alvefur <zash@zash.se>
parents:
5262
diff
changeset
|
147 response_headers.content_type = mime_map.html; |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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parents:
5261
diff
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|
148 |
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diff
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|
149 else |
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parents:
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diff
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|
150 local f, err = open(full_path, "rb"); |
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mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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parents:
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diff
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|
151 if f then |
4e58fde55594
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parents:
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diff
changeset
|
152 data, err = f:read("*a"); |
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diff
changeset
|
153 f:close(); |
4e58fde55594
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parents:
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diff
changeset
|
154 end |
4e58fde55594
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|
155 if not data then |
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
156 module:log("debug", "Could not open or read %s. Error was %s", full_path, err); |
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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|
157 return 403; |
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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parents:
5261
diff
changeset
|
158 end |
5269
7bc52402966d
mod_http_files: Fix sending Content-Type for index files
Kim Alvefur <zash@zash.se>
parents:
5268
diff
changeset
|
159 local ext = full_path:match("%.([^./]+)$"); |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
Kim Alvefur <zash@zash.se>
parents:
5261
diff
changeset
|
160 local content_type = ext and mime_map[ext]; |
7490
b75b08af7a78
mod_http_files: Switch to use util.cache for cache
Kim Alvefur <zash@zash.se>
parents:
7487
diff
changeset
|
161 cache:set(orig_path, { data = data; content_type = content_type; etag = etag }); |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
Kim Alvefur <zash@zash.se>
parents:
5261
diff
changeset
|
162 response_headers.content_type = content_type; |
5238
0cc0359d8c39
mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents:
5237
diff
changeset
|
163 end |
0cc0359d8c39
mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents:
5237
diff
changeset
|
164 |
5262
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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changeset
|
165 return response:send(data); |
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
changeset
|
166 end |
5233
342c46e62f50
mod_http_files: Return 404 faster if file does not exist
Kim Alvefur <zash@zash.se>
parents:
5232
diff
changeset
|
167 |
5262
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diff
changeset
|
168 return serve_file; |
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
|
169 end |
1770
3e17002221eb
mod_httpserver: Backport from trunk more thorough validation of URLs prior to processing
Matthew Wild <mwild1@gmail.com>
parents:
1552
diff
changeset
|
170 |
5265
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
171 function wrap_route(routes) |
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
172 for route,handler in pairs(routes) do |
5268
69964d1cbe66
mod_http_files: Allow passing a string to serve()
Kim Alvefur <zash@zash.se>
parents:
5265
diff
changeset
|
173 if type(handler) ~= "function" then |
5265
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
174 routes[route] = serve(handler); |
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
175 end |
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
176 end |
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
177 return routes; |
cc2aed452a62
mod_http_files: Expose function other modules can use to combine their routes with file paths to serve
Kim Alvefur <zash@zash.se>
parents:
5264
diff
changeset
|
178 end |
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
|
179 |
5262
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|
180 if base_path then |
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mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
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diff
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|
181 module:provides("http", { |
4e58fde55594
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|
182 route = { |
4e58fde55594
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|
183 ["GET /*"] = serve { |
4e58fde55594
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|
184 path = base_path; |
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|
185 directory_index = directory_index; |
4e58fde55594
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|
186 } |
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|
187 }; |
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|
188 }); |
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|
189 else |
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Kim Alvefur <zash@zash.se>
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|
190 module:log("debug", "http_files_dir not set, assuming use by some other module"); |
4e58fde55594
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Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
191 end |
4e58fde55594
mod_http_files: Export function can be used by other modules to serve files. Don't serve files by default unless http_files_dir is set
Kim Alvefur <zash@zash.se>
parents:
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diff
changeset
|
192 |