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annotate plugins/mod_http.lua @ 8706:e2919978673e

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net.http: Fix parameter order to http request callbacks Commit e3b9dc9dd940 changed the parameter order in 2013, but did not update the names of the parameters in the callback function. Due to this inconsistency, 12df41a5a4b1 accidentally reversed the order when fixing the variable names without fixing where they are used. Additionally the documentation was incorrect (since 2013), and this has also now been fixed.
author Matthew Wild <mwild1@gmail.com>
date Wed, 04 Apr 2018 18:27:44 +0100
parents 194f540e13e2
children 11fcdef5022f 09e7b0048ebe
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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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21 server.set_option("body_size_limit", module:get_option_number("http_max_content_size"));
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22 server.set_option("buffer_size_limit", module:get_option_number("http_max_buffer_size"));
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23
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24 local function normalize_path(path)
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25 if path:sub(-1,-1) == "/" then path = path:sub(1, -2); end
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26 if path:sub(1,1) ~= "/" then path = "/"..path; end
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27 return path;
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28 end
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29
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30 local function get_http_event(host, app_path, key)
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31 local method, path = key:match("^(%S+)%s+(.+)$");
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32 if not method then -- No path specified, default to "" (base path)
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33 method, path = key, "";
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34 end
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35 if method:sub(1,1) == "/" then
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36 return nil;
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37 end
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38 if app_path == "/" and path:sub(1,1) == "/" then
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39 app_path = "";
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40 end
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41 return method:upper().." "..host..app_path..path;
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42 end
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43
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44 local function get_base_path(host_module, app_name, default_app_path)
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45 return (normalize_path(host_module:get_option("http_paths", {})[app_name] -- Host
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46 or module:get_option("http_paths", {})[app_name] -- Global
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47 or default_app_path)) -- Default
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48 :gsub("%$(%w+)", { host = host_module.host });
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49 end
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50
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51 local function redir_handler(event)
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52 event.response.headers.location = event.request.path.."/";
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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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fddc2797a96a mod_http: Link to docs on routes in error message
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123 module:log("error", "Invalid route in %s, %q. See http://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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parents: 4724
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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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diff changeset
159 module:provides("net", {
4635
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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";
6086
3b4fde51fa25 mod_http: Update to disable peer verification with the new certmanager
Kim Alvefur <zash@zash.se>
parents: 6027
diff changeset
164 ssl_config = {
7867
194f540e13e2 util.sslconfig: Remvoe flag merging for 'verify' as this is more of a tri-state field than a set of options
Kim Alvefur <zash@zash.se>
parents: 7581
diff changeset
165 verify = "none";
6086
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166 };
4635
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167 multiplex = {
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168 pattern = "^[A-Z]";
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169 };
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170 });