prosody
b5b7ae2901e6
plugins/mod_http_files.lua

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plugins/mod_http_files.lua @ 7228:b5b7ae2901e6

mod_http_files: Fix traceback when serving a non-wildcard path (fixes #611)
author Kim Alvefur <zash@zash.se>
date Thu, 03 Mar 2016 15:28:07 +0100
parent 7058:e9f07febafb3
child 7229:dcc8ed11173c
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1522
569d58d21612 Add copyright header to those files missing one
Matthew Wild <mwild1@gmail.com>
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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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Matthew Wild <mwild1@gmail.com>
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5 -- This project is MIT/X11 licensed. Please see the
569d58d21612 Add copyright header to those files missing one
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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
Kim Alvefur <zash@zash.se>
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9 module:depends("http");
5263
736e7ec8cd2e mod_http_files: Replace file listing with an event, allowing a different plugin to generate it
Kim Alvefur <zash@zash.se>
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10 local server = require"net.http.server";
3353
cd3cbf361f8f mod_httpserver: Serve index.html if a request is made for a directory and it contains one (thanks Brian Cully)
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11 local lfs = require "lfs";
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12
5235
e0373e0dd048 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;
5257
b125892e187c mod_http_files: Escape paths in redirects
Kim Alvefur <zash@zash.se>
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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)
Kim Alvefur <zash@zash.se>
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17 local path_sep = package.config:sub(1,1);
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18
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>
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19 local base_path = module:get_option_string("http_files_dir", module:get_option_string("http_path"));
5261
b14f02671439 mod_http_files: Rename config options and variable names
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20 local dir_indices = module:get_option("http_index_files", { "index.html", "index.htm" });
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21 local directory_index = module:get_option_boolean("http_dir_listing");
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22
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23 local mime_map = module:shared("/*/http_files/mime").types;
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24 if not mime_map then
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25 mime_map = {
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26 html = "text/html", htm = "text/html",
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27 xml = "application/xml",
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28 txt = "text/plain",
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29 css = "text/css",
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30 js = "application/javascript",
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31 png = "image/png",
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32 gif = "image/gif",
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33 jpeg = "image/jpeg", jpg = "image/jpeg",
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34 svg = "image/svg+xml",
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35 };
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36 module:shared("/*/http_files/mime").types = mime_map;
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37
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38 local mime_types, err = open(module:get_option_string("mime_types_file", "/etc/mime.types"),"r");
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39 if mime_types then
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40 local mime_data = mime_types:read("*a");
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41 mime_types:close();
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42 setmetatable(mime_map, {
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43 __index = function(t, ext)
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44 local typ = mime_data:match("\n(%S+)[^\n]*%s"..(ext:lower()).."%s") or "application/octet-stream";
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45 t[ext] = typ;
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46 return typ;
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47 end
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48 });
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49 end
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50 end
2771
c9834f338a4e mod_httpserver: Return Content-Type header based on file extension.
Waqas Hussain <waqas20@gmail.com>
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51
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52 local forbidden_chars_pattern = "[/%z]";
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53 if prosody.platform == "windows" then
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54 forbidden_chars_pattern = "[/%z\001-\031\127\"*:<>?|]"
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55 end
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56
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57 local urldecode = require "util.http".urldecode;
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58 function sanitize_path(path)
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59 if not path then return end
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60 local out = {};
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61
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62 local c = 0;
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63 for component in path:gmatch("([^/]+)") do
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64 component = urldecode(component);
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65 if component:find(forbidden_chars_pattern) then
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66 return nil;
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67 elseif component == ".." then
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68 if c <= 0 then
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69 return nil;
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70 end
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71 out[c] = nil;
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72 c = c - 1;
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73 elseif component ~= "." then
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74 c = c + 1;
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75 out[c] = component;
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76 end
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77 end
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78 return "/"..table.concat(out, "/");
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79 end
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80
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81 local cache = setmetatable({}, { __mode = "kv" }); -- Let the garbage collector have it if it wants to.
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82
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83 function serve(opts)
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69964d1cbe66 mod_http_files: Allow passing a string to serve()
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84 if type(opts) ~= "table" then -- assume path string
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85 opts = { path = opts };
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86 end
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87 local base_path = opts.path;
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88 local dir_indices = opts.index_files or dir_indices;
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89 local directory_index = opts.directory_index;
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90 local function serve_file(event, path)
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91 local request, response = event.request, event.response;
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92 local sanitized_path = sanitize_path(path);
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93 if path and not sanitized_path then
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
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94 return 400;
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95 end
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96 path = sanitized_path;
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97 local orig_path = sanitize_path(request.path);
6873
6dae43341b44 mod_http_files: Translate forward slashes to local directory separators
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98 local full_path = base_path .. (path and "/"..path or ""):gsub("/", path_sep);
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99 local attr = stat(full_path:match("^.*[^\\/]")); -- Strip trailing path separator because Windows
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100 if not attr then
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101 return 404;
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102 end
5248
13553f4132a8 mod_http_files: Compare If-Modified-Since to last modification date
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103
5262
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104 local request_headers, response_headers = request.headers, response.headers;
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105
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106 local last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification);
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107 response_headers.last_modified = last_modified;
5234
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108
5262
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109 local etag = ("%02x-%x-%x-%x"):format(attr.dev or 0, attr.ino or 0, attr.size or 0, attr.modification or 0);
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
110 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
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 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
113 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
114 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
115 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
116 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
117 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
118
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
119 local data = cache[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
120 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
121 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
122 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
123 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
124 if full_path:sub(-1) ~= "/" 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
125 local path = { is_absolute = true, is_directory = true };
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 for dir in orig_path:gmatch("[^/]+") do path[#path+1]=dir; 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
127 response_headers.location = build_path(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
128 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
129 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
130 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
131 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
132 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
133 end
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
134 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
135
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
136 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
137 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
138 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
139 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
140 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
141 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
142 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
143 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
144
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
145 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
146 local f, err = open(full_path, "rb");
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 if f 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
148 data, err = f:read("*a");
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
149 f:close();
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 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
151 if not data 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
152 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
Kim Alvefur <zash@zash.se>
parents: 5261
diff changeset
153 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
154 end
5269
7bc52402966d mod_http_files: Fix sending Content-Type for index files
Kim Alvefur <zash@zash.se>
parents: 5268
diff changeset
155 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
156 local content_type = ext and mime_map[ext];
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
157 cache[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
158 response_headers.content_type = content_type;
5238
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
159 end
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
160
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
161 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
162 end
5233
342c46e62f50 mod_http_files: Return 404 faster if file does not exist
Kim Alvefur <zash@zash.se>
parents: 5232
diff changeset
163
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
164 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
165 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
166
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
167 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
168 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
169 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
170 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
171 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
172 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
173 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
174 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
175
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
176 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
177 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
178 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
179 ["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
180 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
181 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
182 }
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
183 };
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
184 });
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
185 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
186 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
187 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
188