prosody
82705ec87253
plugins/mod_http_files.lua

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plugins/mod_http_files.lua @ 10390:82705ec87253 0.11

util.startup: Ensure prosody.paths are absolute (see #1430) Normally these paths are injected into the installed 'prosody' executable as absolute paths, but it is possible to override at least the config path via environment variable or command line argument. This makes sure a path relative to pwd stays relative to that instead of the data directory.
author Kim Alvefur <zash@zash.se>
date Mon, 04 Nov 2019 00:29:49 +0100
parent 9463:f7530c846f98
child 9950:afc48785f738
child 10776:8f3b87eaec49
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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Matthew Wild <mwild1@gmail.com>
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1 -- Prosody IM
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Matthew Wild <mwild1@gmail.com>
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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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Florian Zeitz <florob@babelmonkeys.de>
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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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bd5e5e23942a mod_httpserver: Adapt to use the new HTTP API
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9 module:depends("http");
5263
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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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13 local os_date = os.date;
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14 local open = io.open;
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15 local stat = lfs.attributes;
5257
b125892e187c mod_http_files: Escape paths in redirects
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16 local build_path = require"socket.url".build_path;
6030
9b91242cc137 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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35a02ba83af2 mod_http_files: Use path variant of config option API for http_files_dir
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19 local base_path = module:get_option_path("http_files_dir", module:get_option_path("http_path"));
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20 local cache_size = module:get_option_number("http_files_cache_size", 128);
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491975f5d383 mod_http_files: Send larger files using new file handle API
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21 local cache_max_file_size = module:get_option_number("http_files_cache_max_file_size", 4096);
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22 local dir_indices = module:get_option_array("http_index_files", { "index.html", "index.htm" });
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23 local directory_index = module:get_option_boolean("http_dir_listing");
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24
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25 local mime_map = module:shared("/*/http_files/mime").types;
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26 if not mime_map then
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27 mime_map = {
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28 html = "text/html", htm = "text/html",
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29 xml = "application/xml",
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30 txt = "text/plain",
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31 css = "text/css",
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32 js = "application/javascript",
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33 png = "image/png",
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34 gif = "image/gif",
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35 jpeg = "image/jpeg", jpg = "image/jpeg",
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36 svg = "image/svg+xml",
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37 };
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38 module:shared("/*/http_files/mime").types = mime_map;
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39
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40 local mime_types, err = open(module:get_option_path("mime_types_file", "/etc/mime.types", "config"), "r");
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41 if mime_types then
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42 local mime_data = mime_types:read("*a");
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43 mime_types:close();
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44 setmetatable(mime_map, {
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45 __index = function(t, ext)
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46 local typ = mime_data:match("\n(%S+)[^\n]*%s"..(ext:lower()).."%s") or "application/octet-stream";
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47 t[ext] = typ;
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48 return typ;
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49 end
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50 });
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51 end
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52 end
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53
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54 local forbidden_chars_pattern = "[/%z]";
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55 if prosody.platform == "windows" then
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56 forbidden_chars_pattern = "[/%z\001-\031\127\"*:<>?|]"
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57 end
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58
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59 local urldecode = require "util.http".urldecode;
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60 function sanitize_path(path)
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61 if not path then return end
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62 local out = {};
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63
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64 local c = 0;
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65 for component in path:gmatch("([^/]+)") do
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66 component = urldecode(component);
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67 if component:find(forbidden_chars_pattern) then
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68 return nil;
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69 elseif component == ".." then
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70 if c <= 0 then
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71 return nil;
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72 end
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73 out[c] = nil;
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74 c = c - 1;
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75 elseif component ~= "." then
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76 c = c + 1;
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77 out[c] = component;
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78 end
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79 end
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80 if path:sub(-1,-1) == "/" then
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81 out[c+1] = "";
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82 end
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83 return "/"..table.concat(out, "/");
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84 end
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85
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86 local cache = require "util.cache".new(cache_size);
5236
8d116a0cdacd mod_http_files: Cache data read from disk in a weak table
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87
5262
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88 function serve(opts)
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89 if type(opts) ~= "table" then -- assume path string
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90 opts = { path = opts };
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91 end
9462
6489d75ff1d6 mod_http_files: Silence luacheck warnings related to config variables
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92 -- luacheck: ignore 431
5262
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93 local base_path = opts.path;
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94 local dir_indices = opts.index_files or dir_indices;
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95 local directory_index = opts.directory_index;
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96 local function serve_file(event, path)
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97 local request, response = event.request, event.response;
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98 local sanitized_path = sanitize_path(path);
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99 if path and not sanitized_path then
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100 return 400;
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101 end
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102 path = sanitized_path;
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103 local orig_path = sanitize_path(request.path);
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dcc8ed11173c mod_http_files: Don't prepend / to path twice, sanitize path does this already
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104 local full_path = base_path .. (path or ""):gsub("/", path_sep);
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105 local attr = stat(full_path:match("^.*[^\\/]")); -- Strip trailing path separator because Windows
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106 if not attr then
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107 return 404;
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108 end
5248
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109
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diff changeset
110 local request_headers, response_headers = request.headers, response.headers;
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
111
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
112 local last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification);
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
113 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
114
7487
88a0a947e58c mod_http_files: send valid ETag header
Anton Shestakov <av6@dwimlabs.net>
parents: 7231
diff changeset
115 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
116 response_headers.etag = etag;
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
117
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
118 local if_none_match = request_headers.if_none_match
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
119 local if_modified_since = request_headers.if_modified_since;
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
120 if etag == if_none_match
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
121 or (not if_none_match and last_modified == if_modified_since) 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
122 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
123 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
124
7490
b75b08af7a78 mod_http_files: Switch to use util.cache for cache
Kim Alvefur <zash@zash.se>
parents: 7487
diff changeset
125 local data = cache:get(orig_path);
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
126 if data and data.etag == etag 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
127 response_headers.content_type = data.content_type;
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
128 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
129 elseif attr.mode == "directory" and path 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
130 if full_path:sub(-1) ~= "/" then
9463
f7530c846f98 mod_http_files: Rename variable to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents: 9462
diff changeset
131 local dir_path = { is_absolute = true, is_directory = true };
f7530c846f98 mod_http_files: Rename variable to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents: 9462
diff changeset
132 for dir in orig_path:gmatch("[^/]+") do dir_path[#dir_path+1]=dir; end
f7530c846f98 mod_http_files: Rename variable to avoid name clash [luacheck]
Kim Alvefur <zash@zash.se>
parents: 9462
diff changeset
133 response_headers.location = build_path(dir_path);
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
134 return 301;
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
135 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: 5261
diff changeset
136 for i=1,#dir_indices do
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
137 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
138 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
139 end
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
140 end
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
141
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
142 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
143 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
144 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
145 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
146 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
147 end
8757
861a7d6c12d8 mod_http_files: Correct cache insertion (fixes #1130)
Kim Alvefur <zash@zash.se>
parents: 7991
diff changeset
148 cache:set(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
149 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
150
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
151 else
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
152 local f, err = open(full_path, "rb");
7491
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
153 if not f then
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
154 module:log("debug", "Could not open %s. Error was %s", full_path, err);
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
155 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
156 end
5269
7bc52402966d mod_http_files: Fix sending Content-Type for index files
Kim Alvefur <zash@zash.se>
parents: 5268
diff changeset
157 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
158 local content_type = ext and mime_map[ext];
7491
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
159 response_headers.content_type = content_type;
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
160 if attr.size > cache_max_file_size then
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
161 response_headers.content_length = attr.size;
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
162 module:log("debug", "%d > cache_max_file_size", attr.size);
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
163 return response:send_file(f);
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
164 else
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
165 data = f:read("*a");
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
166 f:close();
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
167 end
7490
b75b08af7a78 mod_http_files: Switch to use util.cache for cache
Kim Alvefur <zash@zash.se>
parents: 7487
diff changeset
168 cache:set(orig_path, { data = data; content_type = content_type; etag = etag });
5238
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
169 end
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
170
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
171 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
172 end
5233
342c46e62f50 mod_http_files: Return 404 faster if file does not exist
Kim Alvefur <zash@zash.se>
parents: 5232
diff changeset
173
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
174 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
175 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
176
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
177 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
178 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
179 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
180 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
181 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
182 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
183 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
184 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
185
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
186 if base_path 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
187 module:provides("http", {
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
188 route = {
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
189 ["GET /*"] = serve {
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
190 path = base_path;
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
191 directory_index = directory_index;
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
192 }
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
193 };
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
194 });
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
195 else
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
196 module:log("debug", "http_files_dir not set, assuming use by some other module");
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
197 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: 5261
diff changeset
198