prosody
df1be36f87b1
plugins/mod_http.lua

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plugins/mod_http.lua @ 7441:df1be36f87b1

Merge 0.10->trunk
author Kim Alvefur <zash@zash.se>
date Wed, 25 May 2016 21:35:09 +0200
parent 7359:a5a080c12c96
child 7518:829ebe806e82
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2012 Matthew Wild
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3 -- Copyright (C) 2008-2012 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:set_global();
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10 module:depends("http_errors");
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11
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12 local portmanager = require "core.portmanager";
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13 local moduleapi = require "core.moduleapi";
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14 local url_parse = require "socket.url".parse;
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15 local url_build = require "socket.url".build;
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16
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17 local server = require "net.http.server";
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18
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19 server.set_default_host(module:get_option_string("http_default_host"));
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20
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21 local function normalize_path(path)
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22 if path:sub(-1,-1) == "/" then path = path:sub(1, -2); end
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23 if path:sub(1,1) ~= "/" then path = "/"..path; end
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24 return path;
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25 end
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26
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27 local function get_http_event(host, app_path, key)
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28 local method, path = key:match("^(%S+)%s+(.+)$");
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29 if not method then -- No path specified, default to "" (base path)
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30 method, path = key, "";
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31 end
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32 if method:sub(1,1) == "/" then
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33 return nil;
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34 end
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35 if app_path == "/" and path:sub(1,1) == "/" then
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36 app_path = "";
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37 end
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38 return method:upper().." "..host..app_path..path;
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39 end
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40
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41 local function get_base_path(host_module, app_name, default_app_path)
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42 return (normalize_path(host_module:get_option("http_paths", {})[app_name] -- Host
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43 or module:get_option("http_paths", {})[app_name] -- Global
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44 or default_app_path)) -- Default
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45 :gsub("%$(%w+)", { host = host_module.host });
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46 end
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47
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48 local function redir_handler(event)
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49 event.response.headers.location = event.request.path.."/";
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50 if event.request.url.query then
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51 event.response.headers.location = event.response.headers.location .. "?" .. event.request.url.query
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52 end
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53 return 301;
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54 end
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55
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56 local ports_by_scheme = { http = 80, https = 443, };
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57
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58 -- Helper to deduce a module's external URL
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59 function moduleapi.http_url(module, app_name, default_path)
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60 app_name = app_name or (module.name:gsub("^http_", ""));
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61 local external_url = url_parse(module:get_option_string("http_external_url")) or {};
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62 if external_url.scheme and external_url.port == nil then
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63 external_url.port = ports_by_scheme[external_url.scheme];
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64 end
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65 local services = portmanager.get_active_services();
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66 local http_services = services:get("https") or services:get("http") or {};
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67 for interface, ports in pairs(http_services) do
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68 for port, services in pairs(ports) do
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69 local url = {
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70 scheme = (external_url.scheme or services[1].service.name);
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71 host = (external_url.host or module:get_option_string("http_host", module.host));
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72 port = tonumber(external_url.port) or port or 80;
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73 path = normalize_path(external_url.path or "/")..
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74 (get_base_path(module, app_name, default_path or "/"..app_name):sub(2));
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75 }
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76 if ports_by_scheme[url.scheme] == url.port then url.port = nil end
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77 return url_build(url);
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78 end
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79 end
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80 module:log("warn", "No http ports enabled, can't generate an external URL");
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81 return "http://disabled.invalid/";
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82 end
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83
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84 function module.add_host(module)
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85 local host = module:get_option_string("http_host", module.host);
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86 local apps = {};
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87 module.environment.apps = apps;
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88 local function http_app_added(event)
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89 local app_name = event.item.name;
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90 local default_app_path = event.item.default_path or "/"..app_name;
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91 local app_path = get_base_path(module, app_name, default_app_path);
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92 if not app_name then
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93 -- TODO: Link to docs
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94 module:log("error", "HTTP app has no 'name', add one or use module:provides('http', app)");
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95 return;
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96 end
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97 apps[app_name] = apps[app_name] or {};
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98 local app_handlers = apps[app_name];
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99 for key, handler in pairs(event.item.route or {}) do
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100 local event_name = get_http_event(host, app_path, key);
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101 if event_name then
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102 if type(handler) ~= "function" then
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103 local data = handler;
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104 handler = function () return data; end
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105 elseif event_name:sub(-2, -1) == "/*" then
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106 local base_path_len = #event_name:match("/.+$");
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107 local _handler = handler;
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108 handler = function (event)
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109 local path = event.request.path:sub(base_path_len);
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110 return _handler(event, path);
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111 end;
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112 module:hook_object_event(server, event_name:sub(1, -3), redir_handler, -1);
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113 elseif event_name:sub(-1, -1) == "/" then
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114 module:hook_object_event(server, event_name:sub(1, -2), redir_handler, -1);
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115 end
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116 if not app_handlers[event_name] then
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117 app_handlers[event_name] = handler;
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118 module:hook_object_event(server, event_name, handler);
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119 else
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120 module:log("warn", "App %s added handler twice for '%s', ignoring", app_name, event_name);
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121 end
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122 else
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123 module:log("error", "Invalid route in %s, %q. See https://prosody.im/doc/developers/http#routes", app_name, key);
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124 end
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125 end
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126 local services = portmanager.get_active_services();
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127 if services:get("https") or services:get("http") then
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128 module:log("debug", "Serving '%s' at %s", app_name, module:http_url(app_name, app_path));
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129 else
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130 module:log("warn", "Not listening on any ports, '%s' will be unreachable", app_name);
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131 end
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132 end
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133
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134 local function http_app_removed(event)
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135 local app_handlers = apps[event.item.name];
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136 apps[event.item.name] = nil;
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137 for event, handler in pairs(app_handlers) do
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138 module:unhook_object_event(server, event, handler);
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139 end
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140 end
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141
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142 module:handle_items("http-provider", http_app_added, http_app_removed);
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143
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144 server.add_host(host);
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145 function module.unload()
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146 server.remove_host(host);
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147 end
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148 end
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149
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150 module:provides("net", {
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151 name = "http";
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152 listener = server.listener;
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153 default_port = 5280;
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154 multiplex = {
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155 pattern = "^[A-Z]";
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156 };
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157 });
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158
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159 module:provides("net", {
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160 name = "https";
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161 listener = server.listener;
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162 default_port = 5281;
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163 encryption = "ssl";
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164 ssl_config = {
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165 verify = {
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166 peer = false,
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167 client_once = false,
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168 "none",
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169 }
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170 };
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171 multiplex = {
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172 pattern = "^[A-Z]";
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173 };
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174 });