prosody
61759372be26
net/http/files.lua

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net/http/files.lua @ 11707:61759372be26

mod_s2s: Clone 'extra' data to let resolvers add more to it This way 'extra' is unique for each connect() instance, making it safer to mutate it, while inheriting the global settings. See 926d53af9a7a for some more context.
author Kim Alvefur <zash@zash.se>
date Sun, 18 Jul 2021 21:53:26 +0200
parent 11658:36942fa001b4
child 12974:ba409c67353b
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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b7049746bd29 Update copyright headers for 2010
Matthew Wild <mwild1@gmail.com>
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2 -- Copyright (C) 2008-2010 Matthew Wild
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Matthew Wild <mwild1@gmail.com>
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
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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
Matthew Wild <mwild1@gmail.com>
parents: 1384
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6 -- COPYING file in the source package for more information.
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Matthew Wild <mwild1@gmail.com>
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7 --
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8
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9 local server = require"net.http.server";
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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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10 local lfs = require "lfs";
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11 local new_cache = require "util.cache".new;
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12 local log = require "util.logger".init("net.http.files");
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13
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14 local os_date = os.date;
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15 local open = io.open;
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16 local stat = lfs.attributes;
5257
b125892e187c mod_http_files: Escape paths in redirects
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17 local build_path = require"socket.url".build_path;
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9b91242cc137 mod_http_files: Strip path separator from end of paths, was broken on Windows (thanks Junne)
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18 local path_sep = package.config:sub(1,1);
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19
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Waqas Hussain <waqas20@gmail.com>
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20
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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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21 local forbidden_chars_pattern = "[/%z]";
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22 if package.config:sub(1,1) == "\\" then
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23 forbidden_chars_pattern = "[/%z\001-\031\127\"*:<>?|]"
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24 end
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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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26 local urldecode = require "util.http".urldecode;
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27 local function sanitize_path(path) --> util.paths or util.http?
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28 if not path then return end
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29 local out = {};
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31 local c = 0;
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32 for component in path:gmatch("([^/]+)") do
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33 component = urldecode(component);
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34 if component:find(forbidden_chars_pattern) then
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35 return nil;
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36 elseif component == ".." then
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37 if c <= 0 then
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38 return nil;
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39 end
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40 out[c] = nil;
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41 c = c - 1;
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42 elseif component ~= "." then
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43 c = c + 1;
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44 out[c] = component;
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45 end
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46 end
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47 if path:sub(-1,-1) == "/" then
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48 out[c+1] = "";
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49 end
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50 return "/"..table.concat(out, "/");
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51 end
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52
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53 local function serve(opts)
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54 if type(opts) ~= "table" then -- assume path string
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55 opts = { path = opts };
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56 end
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57 local mime_map = opts.mime_map or { html = "text/html" };
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58 local cache = new_cache(opts.cache_size or 256);
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59 local cache_max_file_size = tonumber(opts.cache_max_file_size) or 1024
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6489d75ff1d6 mod_http_files: Silence luacheck warnings related to config variables
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60 -- luacheck: ignore 431
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61 local base_path = opts.path;
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62 local dir_indices = opts.index_files or { "index.html", "index.htm" };
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63 local directory_index = opts.directory_index;
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64 local function serve_file(event, path)
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65 local request, response = event.request, event.response;
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66 local sanitized_path = sanitize_path(path);
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67 if path and not sanitized_path then
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68 return 400;
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69 end
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70 path = sanitized_path;
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71 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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72 local full_path = base_path .. (path or ""):gsub("/", path_sep);
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73 local attr = stat(full_path:match("^.*[^\\/]")); -- Strip trailing path separator because Windows
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74 if not attr then
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75 return 404;
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76 end
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13553f4132a8 mod_http_files: Compare If-Modified-Since to last modification date
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77
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78 local request_headers, response_headers = request.headers, response.headers;
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79
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80 local last_modified = os_date('!%a, %d %b %Y %H:%M:%S GMT', attr.modification);
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81 response_headers.last_modified = last_modified;
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82
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83 local etag = ('"%x-%x-%x"'):format(attr.change or 0, attr.size or 0, attr.modification or 0);
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84 response_headers.etag = etag;
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85
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86 local if_none_match = request_headers.if_none_match
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87 local if_modified_since = request_headers.if_modified_since;
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88 if etag == if_none_match
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89 or (not if_none_match and last_modified == if_modified_since) then
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90 return 304;
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91 end
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92
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93 local data = cache:get(orig_path);
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94 if data and data.etag == etag then
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95 response_headers.content_type = data.content_type;
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96 data = data.data;
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97 cache:set(orig_path, data);
5264
700ff21a0451 mod_http_files: Work with non-wildcard-routes. Key cache on the original HTTP path.
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diff changeset
98 elseif attr.mode == "directory" and path then
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99 if full_path:sub(-1) ~= "/" then
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100 local dir_path = { is_absolute = true, is_directory = true };
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101 for dir in orig_path:gmatch("[^/]+") do dir_path[#dir_path+1]=dir; end
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102 response_headers.location = build_path(dir_path);
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103 return 301;
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104 end
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105 for i=1,#dir_indices do
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106 if stat(full_path..dir_indices[i], "mode") == "file" then
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107 return serve_file(event, path..dir_indices[i]);
5238
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108 end
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diff changeset
109 end
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110
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parents: 5262
diff changeset
111 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
112 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
113 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
114 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
115 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
116 end
8757
861a7d6c12d8 mod_http_files: Correct cache insertion (fixes #1130)
Kim Alvefur <zash@zash.se>
parents: 7991
diff changeset
117 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
118 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
119
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 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
121 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
122 if not f then
9949
a39f3681d685 net.http.files: Make into standalone library
Kim Alvefur <zash@zash.se>
parents: 9948
diff changeset
123 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
124 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
125 end
5269
7bc52402966d mod_http_files: Fix sending Content-Type for index files
Kim Alvefur <zash@zash.se>
parents: 5268
diff changeset
126 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
127 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
128 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
129 if attr.size > cache_max_file_size then
10327
34f7a0e8fa59 net.http.files: Explicitly convert number to string, avoiding implicit coercion
Kim Alvefur <zash@zash.se>
parents: 10065
diff changeset
130 response_headers.content_length = ("%d"):format(attr.size);
9949
a39f3681d685 net.http.files: Make into standalone library
Kim Alvefur <zash@zash.se>
parents: 9948
diff changeset
131 log("debug", "%d > cache_max_file_size", attr.size);
7491
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
132 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
133 else
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
134 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
135 f:close();
491975f5d383 mod_http_files: Send larger files using new file handle API
Kim Alvefur <zash@zash.se>
parents: 7490
diff changeset
136 end
7490
b75b08af7a78 mod_http_files: Switch to use util.cache for cache
Kim Alvefur <zash@zash.se>
parents: 7487
diff changeset
137 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
138 end
0cc0359d8c39 mod_http_files: Generate simple directory index.
Kim Alvefur <zash@zash.se>
parents: 5237
diff changeset
139
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 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
141 end
5233
342c46e62f50 mod_http_files: Return 404 faster if file does not exist
Kim Alvefur <zash@zash.se>
parents: 5232
diff changeset
142
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
143 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
144 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
145
9949
a39f3681d685 net.http.files: Make into standalone library
Kim Alvefur <zash@zash.se>
parents: 9948
diff changeset
146 return {
a39f3681d685 net.http.files: Make into standalone library
Kim Alvefur <zash@zash.se>
parents: 9948
diff changeset
147 serve = serve;
a39f3681d685 net.http.files: Make into standalone library
Kim Alvefur <zash@zash.se>
parents: 9948
diff changeset
148 }
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
149