Sat, 17 Oct 2009 23:48:30 +0500
modulemanager: Slightly rearranged code for more robust unloading of modules.
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1 | -- Prosody IM |
875 | 2 | -- Copyright (C) 2008-2009 Matthew Wild |
3 | -- Copyright (C) 2008-2009 Waqas Hussain | |
4 | -- | |
5 | -- This project is MIT/X11 licensed. Please see the | |
6 | -- COPYING file in the source package for more information. | |
7 | -- | |
8 | ||
9 | ||
10 | module.host = "*" -- Global module | |
11 | ||
12 | local httpserver = require "net.httpserver"; | |
13 | local st = require "util.stanza"; | |
14 | local pcall = pcall; | |
15 | local unpack = unpack; | |
16 | local tostring = tostring; | |
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17 | local is_admin = require "core.usermanager".is_admin; |
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18 | local jid_split = require "util.jid".split; |
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19 | local jid_bare = require "util.jid".bare; |
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20 | local b64_decode = require "util.encodings".base64.decode; |
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21 | local get_method = require "core.objectmanager".get_object; |
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22 | local validate_credentials = require "core.usermanager".validate_credentials; |
875 | 23 | |
24 | local translate_request = require "util.xmlrpc".translate_request; | |
25 | local create_response = require "util.xmlrpc".create_response; | |
26 | local create_error_response = require "util.xmlrpc".create_error_response; | |
27 | ||
28 | local entity_map = setmetatable({ | |
29 | ["amp"] = "&"; | |
30 | ["gt"] = ">"; | |
31 | ["lt"] = "<"; | |
32 | ["apos"] = "'"; | |
33 | ["quot"] = "\""; | |
34 | }, {__index = function(_, s) | |
35 | if s:sub(1,1) == "#" then | |
36 | if s:sub(2,2) == "x" then | |
37 | return string.char(tonumber(s:sub(3), 16)); | |
38 | else | |
39 | return string.char(tonumber(s:sub(2))); | |
40 | end | |
41 | end | |
42 | end | |
43 | }); | |
44 | local function xml_unescape(str) | |
45 | return (str:gsub("&(.-);", entity_map)); | |
46 | end | |
47 | local function parse_xml(xml) | |
48 | local stanza = st.stanza("root"); | |
49 | local regexp = "<([^>]*)>([^<]*)"; | |
50 | for elem, text in xml:gmatch(regexp) do | |
51 | --print("[<"..elem..">|"..text.."]"); | |
52 | if elem:sub(1,1) == "!" or elem:sub(1,1) == "?" then -- neglect comments and processing-instructions | |
53 | elseif elem:sub(1,1) == "/" then -- end tag | |
54 | elem = elem:sub(2); | |
55 | stanza:up(); -- TODO check for start-end tag name match | |
56 | elseif elem:sub(-1,-1) == "/" then -- empty tag | |
57 | elem = elem:sub(1,-2); | |
58 | stanza:tag(elem):up(); | |
59 | else -- start tag | |
60 | stanza:tag(elem); | |
61 | end | |
62 | if #text ~= 0 then -- text | |
63 | stanza:text(xml_unescape(text)); | |
64 | end | |
65 | end | |
66 | return stanza.tags[1]; | |
67 | end | |
68 | ||
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69 | local function handle_xmlrpc_request(jid, method, args) |
1590 | 70 | local is_secure_call = (method:sub(1,7) == "secure/"); |
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71 | if not is_admin(jid) and not is_secure_call then |
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72 | return create_error_response(401, "not authorized"); |
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73 | end |
875 | 74 | method = get_method(method); |
75 | if not method then return create_error_response(404, "method not found"); end | |
76 | args = args or {}; | |
1590 | 77 | if is_secure_call then table.insert(args, 1, jid); end |
875 | 78 | local success, result = pcall(method, unpack(args)); |
79 | if success then | |
80 | success, result = pcall(create_response, result or "nil"); | |
81 | if success then | |
82 | return result; | |
83 | end | |
84 | return create_error_response(500, "Error in creating response: "..result); | |
85 | end | |
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86 | return create_error_response(0, tostring(result):gsub("^[^:]+:%d+: ", "")); |
875 | 87 | end |
88 | ||
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89 | local function handle_xmpp_request(origin, stanza) |
875 | 90 | local query = stanza.tags[1]; |
91 | if query.name == "query" then | |
92 | if #query.tags == 1 then | |
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93 | local success, method, args = pcall(translate_request, query.tags[1]); |
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94 | if success then |
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95 | local result = handle_xmlrpc_request(jid_bare(stanza.attr.from), method, args); |
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96 | origin.send(st.reply(stanza):tag('query', {xmlns='jabber:iq:rpc'}):add_child(result)); |
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97 | else |
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98 | origin.send(st.error_reply(stanza, "modify", "bad-request", method)); |
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99 | end |
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100 | else origin.send(st.error_reply(stanza, "modify", "bad-request", "No content in XML-RPC request")); end |
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101 | else origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); end |
875 | 102 | end |
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103 | module:add_iq_handler({"c2s", "s2sin"}, "jabber:iq:rpc", handle_xmpp_request); |
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Waqas Hussain <waqas20@gmail.com>
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104 | module:add_feature("jabber:iq:rpc"); |
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Waqas Hussain <waqas20@gmail.com>
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105 | -- TODO add <identity category='automation' type='rpc'/> to disco replies |
875 | 106 | |
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107 | local default_headers = { ['Content-Type'] = 'text/xml' }; |
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108 | local unauthorized_response = { status = '401 UNAUTHORIZED', headers = {['Content-Type']='text/html', ['WWW-Authenticate']='Basic realm="WallyWorld"'}; body = "<html><body>Authentication required</body></html>"; }; |
875 | 109 | local function handle_http_request(method, body, request) |
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110 | -- authenticate user |
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111 | local username, password = b64_decode(request['authorization'] or ''):gmatch('([^:]*):(.*)')(); -- TODO digest auth |
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112 | local node, host = jid_split(username); |
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113 | if not validate_credentials(host, node, password) then |
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114 | return unauthorized_response; |
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115 | end |
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116 | -- parse request |
875 | 117 | local stanza = body and parse_xml(body); |
118 | if (not stanza) or request.method ~= "POST" then | |
119 | return "<html><body>You really don't look like an XML-RPC client to me... what do you want?</body></html>"; | |
120 | end | |
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121 | -- execute request |
875 | 122 | local success, method, args = pcall(translate_request, stanza); |
123 | if success then | |
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124 | return { headers = default_headers; body = tostring(handle_xmlrpc_request(node.."@"..host, method, args)) }; |
875 | 125 | end |
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126 | return "<html><body>Error parsing XML-RPC request: "..tostring(method).."</body></html>"; |
875 | 127 | end |
128 | httpserver.new{ port = 9000, base = "xmlrpc", handler = handle_http_request } |