1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
-- Prosody IM
-- Copyright (C) 2008-2012 Matthew Wild
-- Copyright (C) 2008-2012 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
module:set_global();
module:depends("http_errors");
local portmanager = require "core.portmanager";
local moduleapi = require "core.moduleapi";
local url_parse = require "socket.url".parse;
local url_build = require "socket.url".build;
local normalize_path = require "util.http".normalize_path;
local server = require "net.http.server";
server.set_default_host(module:get_option_string("http_default_host"));
server.set_option("body_size_limit", module:get_option_number("http_max_content_size"));
server.set_option("buffer_size_limit", module:get_option_number("http_max_buffer_size"));
-- CORS settigs
local opt_methods = module:get_option_set("access_control_allow_methods", { "GET", "POST", "PUT", "OPTIONS" });
local opt_headers = module:get_option_set("access_control_allow_headers", { "Content-Type" });
local opt_max_age = module:get_option_number("access_control_max_age", 2 * 60 * 60);
local function get_http_event(host, app_path, key)
local method, path = key:match("^(%S+)%s+(.+)$");
if not method then -- No path specified, default to "" (base path)
method, path = key, "";
end
if method:sub(1,1) == "/" then
return nil;
end
if app_path == "/" and path:sub(1,1) == "/" then
app_path = "";
end
if host == "*" then
return method:upper().." "..app_path..path;
else
return method:upper().." "..host..app_path..path;
end
end
local function get_base_path(host_module, app_name, default_app_path)
return (normalize_path(host_module:get_option("http_paths", {})[app_name] -- Host
or module:get_option("http_paths", {})[app_name] -- Global
or default_app_path)) -- Default
:gsub("%$(%w+)", { host = host_module.host });
end
local function redir_handler(event)
event.response.headers.location = event.request.path.."/";
if event.request.url.query then
event.response.headers.location = event.response.headers.location .. "?" .. event.request.url.query
end
return 301;
end
local ports_by_scheme = { http = 80, https = 443, };
-- Helper to deduce a module's external URL
function moduleapi.http_url(module, app_name, default_path)
app_name = app_name or (module.name:gsub("^http_", ""));
local external_url = url_parse(module:get_option_string("http_external_url")) or {};
if external_url.scheme and external_url.port == nil then
external_url.port = ports_by_scheme[external_url.scheme];
end
local services = portmanager.get_active_services();
local http_services = services:get("https") or services:get("http") or {};
for interface, ports in pairs(http_services) do -- luacheck: ignore 213/interface
for port, service in pairs(ports) do -- luacheck: ignore 512
local url = {
scheme = (external_url.scheme or service[1].service.name);
host = (external_url.host or module:get_option_string("http_host", module.host));
port = tonumber(external_url.port) or port or 80;
path = normalize_path(external_url.path or "/", true)..
(get_base_path(module, app_name, default_path or "/"..app_name):sub(2));
}
if ports_by_scheme[url.scheme] == url.port then url.port = nil end
return url_build(url);
end
end
module:log("warn", "No http ports enabled, can't generate an external URL");
return "http://disabled.invalid/";
end
local function apply_cors_headers(response, methods, headers, max_age, origin)
response.headers.access_control_allow_methods = tostring(methods);
response.headers.access_control_allow_headers = tostring(headers);
response.headers.access_control_max_age = tostring(max_age)
response.headers.access_control_allow_origin = origin or "*";
end
function module.add_host(module)
local host = module.host;
if host ~= "*" then
host = module:get_option_string("http_host", host);
end
local apps = {};
module.environment.apps = apps;
local function http_app_added(event)
local app_name = event.item.name;
local default_app_path = event.item.default_path or "/"..app_name;
local app_path = get_base_path(module, app_name, default_app_path);
if not app_name then
-- TODO: Link to docs
module:log("error", "HTTP app has no 'name', add one or use module:provides('http', app)");
return;
end
apps[app_name] = apps[app_name] or {};
local app_handlers = apps[app_name];
local function cors_handler(event_data)
local request, response = event_data.request, event_data.response;
apply_cors_headers(response, opt_methods, opt_headers, opt_max_age, request.headers.origin);
end
for key, handler in pairs(event.item.route or {}) do
local event_name = get_http_event(host, app_path, key);
if event_name then
if type(handler) ~= "function" then
local data = handler;
handler = function () return data; end
elseif event_name:sub(-2, -1) == "/*" then
local base_path_len = #event_name:match("/.+$");
local _handler = handler;
handler = function (_event)
local path = _event.request.path:sub(base_path_len);
return _handler(_event, path);
end;
module:hook_object_event(server, event_name:sub(1, -3), redir_handler, -1);
elseif event_name:sub(-1, -1) == "/" then
module:hook_object_event(server, event_name:sub(1, -2), redir_handler, -1);
end
if not app_handlers[event_name] then
app_handlers[event_name] = handler;
module:hook_object_event(server, event_name, handler);
module:hook_object_event(server, event_name, cors_handler, 1);
else
module:log("warn", "App %s added handler twice for '%s', ignoring", app_name, event_name);
end
else
module:log("error", "Invalid route in %s, %q. See https://prosody.im/doc/developers/http#routes", app_name, key);
end
end
local services = portmanager.get_active_services();
if services:get("https") or services:get("http") then
module:log("debug", "Serving '%s' at %s", app_name, module:http_url(app_name, app_path));
else
module:log("warn", "Not listening on any ports, '%s' will be unreachable", app_name);
end
end
local function http_app_removed(event)
local app_handlers = apps[event.item.name];
apps[event.item.name] = nil;
for event_name, handler in pairs(app_handlers) do
module:unhook_object_event(server, event_name, handler);
end
end
module:handle_items("http-provider", http_app_added, http_app_removed);
if host ~= "*" then
server.add_host(host);
function module.unload()
server.remove_host(host);
end
end
end
module.add_host(module); -- set up handling on global context too
local trusted_proxies = module:get_option_set("trusted_proxies", { "127.0.0.1", "::1" })._items;
local function get_ip_from_request(request)
local ip = request.conn:ip();
local forwarded_for = request.headers.x_forwarded_for;
if forwarded_for then
forwarded_for = forwarded_for..", "..ip;
for forwarded_ip in forwarded_for:gmatch("[^%s,]+") do
if not trusted_proxies[forwarded_ip] then
ip = forwarded_ip;
end
end
end
return ip;
end
module:wrap_object_event(server._events, false, function (handlers, event_name, event_data)
local request = event_data.request;
if request then
-- Not included in eg http-error events
request.ip = get_ip_from_request(request);
end
return handlers(event_name, event_data);
end);
module:provides("net", {
name = "http";
listener = server.listener;
default_port = 5280;
multiplex = {
pattern = "^[A-Z]";
};
});
module:provides("net", {
name = "https";
listener = server.listener;
default_port = 5281;
encryption = "ssl";
ssl_config = {
verify = "none";
};
multiplex = {
pattern = "^[A-Z]";
};
});
|
