prosody
912a49b1c4e3
net/http.lua

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net/http.lua @ 4352:912a49b1c4e3

net.http, httpclient_listener: Move request sending from net.http to onconnect() handler, and add support for HTTPS requests to net.http
author Matthew Wild <mwild1@gmail.com>
date Sat, 20 Aug 2011 15:10:04 -0400
parent 4351:3f414091a008
child 4355:9e2a841739b5
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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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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 local socket = require "socket"
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10 local mime = require "mime"
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11 local url = require "socket.url"
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12 local httpstream_new = require "util.httpstream".new;
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13
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14 local server = require "net.server"
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16 local connlisteners_get = require "net.connlisteners".get;
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17 local listener = connlisteners_get("httpclient") or error("No httpclient listener!");
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18
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19 local t_insert, t_concat = table.insert, table.concat;
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20 local pairs, ipairs = pairs, ipairs;
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21 local tonumber, tostring, xpcall, select, debug_traceback, char, format =
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22 tonumber, tostring, xpcall, select, debug.traceback, string.char, string.format;
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24 local log = require "util.logger".init("http");
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25
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26 module "http"
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27
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28 function urlencode(s) return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end)); end
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29 function urldecode(s) return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); end
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31 local function _formencodepart(s)
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32 return s and (s:gsub("%W", function (c)
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33 if c ~= " " then
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34 return format("%%%02x", c:byte());
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35 else
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36 return "+";
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37 end
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38 end));
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39 end
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40
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41 function formencode(form)
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42 local result = {};
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43 for _, field in ipairs(form) do
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44 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
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45 end
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46 return t_concat(result, "&");
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47 end
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48
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49 function formdecode(s)
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50 if not s:match("=") then return urldecode(s); end
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51 local r = {};
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52 for k, v in s:gmatch("([^=&]*)=([^&]*)") do
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53 k, v = k:gsub("%+", "%%20"), v:gsub("%+", "%%20");
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54 k, v = urldecode(k), urldecode(v);
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55 t_insert(r, { name = k, value = v });
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56 r[k] = v;
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57 end
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58 return r;
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59 end
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60
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61 local function request_reader(request, data, startpos)
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62 if not request.parser then
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63 if not data then return; end
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64 local function success_cb(r)
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65 if request.callback then
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66 for k,v in pairs(r) do request[k] = v; end
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67 request.callback(r.body, r.code, request);
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68 request.callback = nil;
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69 end
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70 destroy_request(request);
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71 end
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72 local function error_cb(r)
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73 if request.callback then
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74 request.callback(r or "connection-closed", 0, request);
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75 request.callback = nil;
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76 end
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77 destroy_request(request);
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78 end
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79 local function options_cb()
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80 return request;
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81 end
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82 request.parser = httpstream_new(success_cb, error_cb, "client", options_cb);
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83 end
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84 request.parser:feed(data);
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85 end
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86
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87 local function handleerr(err) log("error", "Traceback[http]: %s: %s", tostring(err), debug_traceback()); end
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88 function request(u, ex, callback)
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89 local req = url.parse(u);
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90
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91 if not (req and req.host) then
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92 callback(nil, 0, req);
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93 return nil, "invalid-url";
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94 end
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95
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96 if not req.path then
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97 req.path = "/";
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98 end
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99
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100 local method, headers, body;
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101
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102 headers = {
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103 ["Host"] = req.host;
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104 ["User-Agent"] = "Prosody XMPP Server";
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105 };
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106
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107 if req.userinfo then
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108 headers["Authorization"] = "Basic "..mime.b64(req.userinfo);
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109 end
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110
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111 if ex then
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112 req.onlystatus = ex.onlystatus;
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113 body = ex.body;
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114 if body then
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115 method = "POST ";
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116 headers["Content-Length"] = tostring(#body);
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117 headers["Content-Type"] = "application/x-www-form-urlencoded";
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118 end
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119 if ex.method then method = ex.method; end
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120 if ex.headers then
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121 for k, v in pairs(ex.headers) do
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122 headers[k] = v;
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123 end
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124 end
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125 end
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126
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127 -- Attach to request object
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128 req.method, req.headers, req.body = method, headers, body;
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129
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130 local using_https = req.scheme == "https";
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131 local port = req.port or (using_https and 443 or 80);
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132
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133 -- Connect the socket, and wrap it with net.server
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134 local conn = socket.tcp();
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135 conn:settimeout(10);
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136 local ok, err = conn:connect(req.host, port);
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137 if not ok and err ~= "timeout" then
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138 callback(nil, 0, req);
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139 return nil, err;
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140 end
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141
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142 req.handler, req.conn = server.wrapclient(conn, req.host, port, listener, "*a", using_https and { mode = "client", protocol = "sslv23" });
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143 req.write = function (...) return req.handler:write(...); end
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144
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145 req.callback = function (content, code, request) log("debug", "Calling callback, status %s", code or "---"); return select(2, xpcall(function () return callback(content, code, request) end, handleerr)); end
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146 req.reader = request_reader;
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147 req.state = "status";
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148
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149 listener.register_request(req.handler, req);
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150
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151 return req;
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152 end
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153
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154 function destroy_request(request)
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155 if request.conn then
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156 request.conn = nil;
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157 request.handler:close()
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158 listener.ondisconnect(request.handler, "closed");
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159 end
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160 end
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161
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162 _M.urlencode = urlencode;
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163
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164 return _M;