prosody
569d58d21612
net/httpserver.lua

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net/httpserver.lua @ 1522:569d58d21612

Add copyright header to those files missing one
author Matthew Wild <mwild1@gmail.com>
date Fri, 10 Jul 2009 03:08:38 +0100
parent 1435:7a073b0a8f6a
child 1536:8214458eacc8
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1522
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2009 Matthew Wild
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3 -- Copyright (C) 2008-2009 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
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10 local socket = require "socket"
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11 local server = require "net.server"
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12 local url_parse = require "socket.url".parse;
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13
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14 local connlisteners_start = require "net.connlisteners".start;
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15 local connlisteners_get = require "net.connlisteners".get;
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16 local listener;
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17
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18 local t_insert, t_concat = table.insert, table.concat;
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19 local s_match, s_gmatch = string.match, string.gmatch;
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20 local tonumber, tostring, pairs = tonumber, tostring, pairs;
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21
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22 local urlencode = function (s) return s and (s:gsub("%W", function (c) return string.format("%%%02x", c:byte()); end)); end
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23
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24 local log = require "util.logger".init("httpserver");
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25
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26 local http_servers = {};
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27
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28 module "httpserver"
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29
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30 local default_handler;
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31
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32 local function expectbody(reqt)
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33 return reqt.method == "POST";
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34 end
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35
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36 local function send_response(request, response)
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37 -- Write status line
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38 local resp;
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39 if response.body then
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40 log("debug", "Sending response to %s", request.id);
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41 resp = { "HTTP/1.0 ", response.status or "200 OK", "\r\n"};
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42 local h = response.headers;
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43 if h then
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44 for k, v in pairs(h) do
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45 t_insert(resp, k);
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46 t_insert(resp, ": ");
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47 t_insert(resp, v);
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48 t_insert(resp, "\r\n");
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49 end
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50 end
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51 if response.body and not (h and h["Content-Length"]) then
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52 t_insert(resp, "Content-Length: ");
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53 t_insert(resp, #response.body);
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54 t_insert(resp, "\r\n");
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55 end
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56 t_insert(resp, "\r\n");
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57
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58 if response.body and request.method ~= "HEAD" then
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59 t_insert(resp, response.body);
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60 end
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61 else
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62 -- Response we have is just a string (the body)
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63 log("debug", "Sending response to %s: %s", request.id or "<none>", response or "<none>");
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64
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65 resp = { "HTTP/1.0 200 OK\r\n" };
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66 t_insert(resp, "Connection: close\r\n");
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67 t_insert(resp, "Content-Length: ");
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68 t_insert(resp, #response);
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69 t_insert(resp, "\r\n\r\n");
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70
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71 t_insert(resp, response);
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72 end
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73 request.write(t_concat(resp));
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74 if not request.stayopen then
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75 request:destroy();
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76 end
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77 end
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78
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79 local function call_callback(request, err)
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80 if request.handled then return; end
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81 request.handled = true;
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82 local callback = request.callback;
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83 if not callback and request.path then
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84 local path = request.url.path;
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85 local base = path:match("^/([^/?]+)");
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86 if not base then
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87 base = path:match("^http://[^/?]+/([^/?]+)");
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88 end
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89
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90 callback = (request.server and request.server.handlers[base]) or default_handler;
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91 if callback == default_handler then
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92 log("debug", "Default callback for this request (base: "..tostring(base)..")")
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93 end
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94 end
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95 if callback then
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96 if err then
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97 log("debug", "Request error: "..err);
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98 if not callback(nil, err, request) then
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99 destroy_request(request);
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100 end
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101 return;
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102 end
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103
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104 local response = callback(request.method, request.body and t_concat(request.body), request);
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105 if response then
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106 if response == true and not request.destroyed then
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107 -- Keep connection open, we will reply later
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108 log("warn", "Request %s left open, on_destroy is %s", request.id, tostring(request.on_destroy));
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109 elseif response ~= true then
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110 -- Assume response
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111 send_response(request, response);
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112 destroy_request(request);
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113 end
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114 else
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115 log("debug", "Request handler provided no response, destroying request...");
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116 -- No response, close connection
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117 destroy_request(request);
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118 end
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119 end
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120 end
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121
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122 local function request_reader(request, data, startpos)
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123 if not data then
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124 if request.body then
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125 call_callback(request);
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126 else
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127 -- Error.. connection was closed prematurely
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128 call_callback(request, "connection-closed");
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129 end
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130 -- Here we force a destroy... the connection is gone, so we can't reply later
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131 destroy_request(request);
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132 return;
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133 end
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134 if request.state == "body" then
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135 log("debug", "Reading body...")
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136 if not request.body then request.body = {}; request.havebodylength, request.bodylength = 0, tonumber(request.headers["content-length"]); end
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137 if startpos then
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138 data = data:sub(startpos, -1)
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
139 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
140 t_insert(request.body, data);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
141 if request.bodylength then
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
142 request.havebodylength = request.havebodylength + #data;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
143 if request.havebodylength >= request.bodylength then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
144 -- We have the body
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
145 call_callback(request);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
146 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
147 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
148 elseif request.state == "headers" then
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Matthew Wild <mwild1@gmail.com>
parents:
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149 log("debug", "Reading headers...")
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parents:
diff changeset
150 local pos = startpos;
697
8ddc85fa7602 core.httpserver: Rename request.responseheaders to the more logical request.headers
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parents: 634
diff changeset
151 local headers = request.headers or {};
634
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diff changeset
152 for line in data:gmatch("(.-)\r\n") do
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153 startpos = (startpos or 1) + #line + 2;
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parents:
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154 local k, v = line:match("(%S+): (.+)");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
155 if k and v then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
156 headers[k:lower()] = v;
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
157 -- log("debug", "Header: "..k:lower().." = "..v);
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parents:
diff changeset
158 elseif #line == 0 then
697
8ddc85fa7602 core.httpserver: Rename request.responseheaders to the more logical request.headers
Matthew Wild <mwild1@gmail.com>
parents: 634
diff changeset
159 request.headers = headers;
634
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
160 break;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161 else
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
162 log("debug", "Unhandled header line: "..line);
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parents:
diff changeset
163 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
164 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
165
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
166 if not expectbody(request) then
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parents:
diff changeset
167 call_callback(request);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
168 return;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
169 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
170
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parents:
diff changeset
171 -- Reached the end of the headers
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parents:
diff changeset
172 request.state = "body";
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
173 if #data > startpos then
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
174 return request_reader(request, data:sub(startpos, -1));
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parents:
diff changeset
175 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
176 elseif request.state == "request" then
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parents:
diff changeset
177 log("debug", "Reading request line...")
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
178 local method, path, http, linelen = data:match("^(%S+) (%S+) HTTP/(%S+)\r\n()", startpos);
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parents:
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179 if not method then
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parents:
diff changeset
180 return call_callback(request, "invalid-status-line");
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parents:
diff changeset
181 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
183 request.method, request.path, request.httpversion = method, path, http;
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parents:
diff changeset
184
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185 request.url = url_parse(request.path);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
186
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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diff changeset
187 log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler.serverport());
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
188
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
189 if request.onlystatus then
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
190 if not call_callback(request) then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
191 return;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
192 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
193 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
194
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
195 request.state = "headers";
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
196
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
197 if #data > linelen then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
198 return request_reader(request, data:sub(linelen, -1));
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
199 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
200 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
201 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
202
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
203 -- The default handler for requests
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
204 default_handler = function (method, body, request)
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
205 log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler.serverport());
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
206 return { status = "404 Not Found",
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
207 headers = { ["Content-Type"] = "text/html" },
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 body = "<html><head><title>Page Not Found</title></head><body>Not here :(</body></html>" };
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212 function new_request(handler)
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213 return { handler = handler, conn = handler.socket,
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 write = handler.write, state = "request",
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215 server = http_servers[handler.serverport()],
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
216 send = send_response,
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217 destroy = destroy_request,
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
218 id = tostring{}:match("%x+$")
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
219 };
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
220 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222 function destroy_request(request)
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
223 log("debug", "Destroying request %s", request.id);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
224 listener = listener or connlisteners_get("httpserver");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225 if not request.destroyed then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
226 request.destroyed = true;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
227 if request.on_destroy then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
228 log("debug", "Request has destroy callback");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
229 request.on_destroy(request);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
230 else
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
231 log("debug", "Request has no destroy callback");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
232 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
233 request.handler.close()
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
234 if request.conn then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
235 listener.disconnect(request.conn, "closed");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
236 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
237 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 function new(params)
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
241 local http_server = http_servers[params.port];
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
242 if not http_server then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243 http_server = { handlers = {} };
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
244 http_servers[params.port] = http_server;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
245 -- We weren't already listening on this port, so start now
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246 connlisteners_start("httpserver", params);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
247 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
248 if params.base then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
249 http_server.handlers[params.base] = params.handler;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
250 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
251 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
252
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
253 _M.request_reader = request_reader;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
254 _M.send_response = send_response;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
255 _M.urlencode = urlencode;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
256
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
257 return _M;