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plugins/mod_saslauth.lua @ 1550:03f89de65d9f
net.httpserver: Allow specification of the default base URL when using new_from_config()
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 14 Jul 2009 21:03:30 +0100 |
parent | 1523:841d61be198f |
child | 1584:ffe8a9296e04 |
child | 1721:1dcfb2c64302 |
rev | line source |
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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 -- |
758 | 5 -- This project is MIT/X11 licensed. Please see the |
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 |
38 | 10 |
11 local st = require "util.stanza"; | |
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12 local sm_bind_resource = require "core.sessionmanager".bind_resource; |
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13 local sm_make_authenticated = require "core.sessionmanager".make_authenticated; |
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14 local base64 = require "util.encodings".base64; |
38 | 15 |
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16 local datamanager_load = require "util.datamanager".load; |
38 | 17 local usermanager_validate_credentials = require "core.usermanager".validate_credentials; |
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18 local t_concat, t_insert = table.concat, table.insert; |
38 | 19 local tostring = tostring; |
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20 local jid_split = require "util.jid".split |
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21 local md5 = require "util.hashes".md5; |
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22 local config = require "core.configmanager"; |
38 | 23 |
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24 local secure_auth_only = config.get(module:get_host(), "core", "require_encryption"); |
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25 |
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26 local log = module._log; |
38 | 27 |
28 local xmlns_sasl ='urn:ietf:params:xml:ns:xmpp-sasl'; | |
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29 local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind'; |
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30 local xmlns_stanzas ='urn:ietf:params:xml:ns:xmpp-stanzas'; |
38 | 31 |
32 local new_sasl = require "util.sasl".new; | |
33 | |
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34 local function build_reply(status, ret, err_msg) |
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35 local reply = st.stanza(status, {xmlns = xmlns_sasl}); |
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36 if status == "challenge" then |
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37 log("debug", "%s", ret or ""); |
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38 reply:text(base64.encode(ret or "")); |
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39 elseif status == "failure" then |
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40 reply:tag(ret):up(); |
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41 if err_msg then reply:tag("text"):text(err_msg); end |
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42 elseif status == "success" then |
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43 log("debug", "%s", ret or ""); |
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44 reply:text(base64.encode(ret or "")); |
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45 else |
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46 module:log("error", "Unknown sasl status: %s", status); |
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47 end |
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48 return reply; |
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49 end |
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50 |
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51 local function handle_status(session, status) |
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52 if status == "failure" then |
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53 session.sasl_handler = nil; |
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54 elseif status == "success" then |
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55 if not session.sasl_handler.username then -- TODO move this to sessionmanager |
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56 module:log("warn", "SASL succeeded but we didn't get a username!"); |
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57 session.sasl_handler = nil; |
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58 session:reset_stream(); |
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59 return; |
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60 end |
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61 sm_make_authenticated(session, session.sasl_handler.username); |
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62 session.sasl_handler = nil; |
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63 session:reset_stream(); |
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64 end |
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65 end |
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66 |
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67 local function password_callback(node, hostname, realm, mechanism, decoder) |
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68 local password = (datamanager_load(node, hostname, "accounts") or {}).password; -- FIXME handle hashed passwords |
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69 local func = function(x) return x; end; |
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70 if password then |
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71 if mechanism == "PLAIN" then |
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72 return func, password; |
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73 elseif mechanism == "DIGEST-MD5" then |
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74 if decoder then node, realm, password = decoder(node), decoder(realm), decoder(password); end |
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75 return func, md5(node..":"..realm..":"..password); |
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76 end |
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77 end |
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78 return func, nil; |
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79 end |
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80 |
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81 local function sasl_handler(session, stanza) |
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82 if stanza.name == "auth" then |
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83 -- FIXME ignoring duplicates because ejabberd does |
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84 if config.get(session.host or "*", "core", "anonymous_login") then |
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85 if stanza.attr.mechanism ~= "ANONYMOUS" then |
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86 return session.send(build_reply("failure", "invalid-mechanism")); |
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87 end |
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88 elseif stanza.attr.mechanism == "ANONYMOUS" then |
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89 return session.send(build_reply("failure", "mechanism-too-weak")); |
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90 end |
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91 session.sasl_handler = new_sasl(stanza.attr.mechanism, session.host, password_callback); |
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92 if not session.sasl_handler then |
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93 return session.send(build_reply("failure", "invalid-mechanism")); |
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94 end |
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95 elseif not session.sasl_handler then |
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96 return; -- FIXME ignoring out of order stanzas because ejabberd does |
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97 end |
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98 local text = stanza[1]; |
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99 if text then |
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100 text = base64.decode(text); |
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101 log("debug", "%s", text); |
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102 if not text then |
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103 session.sasl_handler = nil; |
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104 session.send(build_reply("failure", "incorrect-encoding")); |
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105 return; |
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106 end |
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107 end |
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108 local status, ret, err_msg = session.sasl_handler:feed(text); |
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109 handle_status(session, status); |
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110 local s = build_reply(status, ret, err_msg); |
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111 log("debug", "sasl reply: %s", tostring(s)); |
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112 session.send(s); |
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113 end |
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114 |
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115 module:add_handler("c2s_unauthed", "auth", xmlns_sasl, sasl_handler); |
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116 module:add_handler("c2s_unauthed", "abort", xmlns_sasl, sasl_handler); |
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117 module:add_handler("c2s_unauthed", "response", xmlns_sasl, sasl_handler); |
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118 |
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119 local mechanisms_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-sasl' }; |
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120 local bind_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-bind' }; |
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121 local xmpp_session_attr = { xmlns='urn:ietf:params:xml:ns:xmpp-session' }; |
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122 module:add_event_hook("stream-features", |
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123 function (session, features) |
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124 if not session.username then |
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125 if secure_auth_only and not session.secure then |
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126 return; |
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127 end |
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128 features:tag("mechanisms", mechanisms_attr); |
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129 -- TODO: Provide PLAIN only if TLS is active, this is a SHOULD from the introduction of RFC 4616. This behavior could be overridden via configuration but will issuing a warning or so. |
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130 if config.get(session.host or "*", "core", "anonymous_login") then |
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131 features:tag("mechanism"):text("ANONYMOUS"):up(); |
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132 else |
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133 features:tag("mechanism"):text("DIGEST-MD5"):up(); |
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134 features:tag("mechanism"):text("PLAIN"):up(); |
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135 end |
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136 features:up(); |
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137 else |
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138 features:tag("bind", bind_attr):tag("required"):up():up(); |
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139 features:tag("session", xmpp_session_attr):up(); |
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140 end |
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141 end); |
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142 |
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143 module:add_iq_handler("c2s", "urn:ietf:params:xml:ns:xmpp-bind", |
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144 function (session, stanza) |
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145 log("debug", "Client requesting a resource bind"); |
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146 local resource; |
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147 if stanza.attr.type == "set" then |
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148 local bind = stanza.tags[1]; |
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149 if bind and bind.attr.xmlns == xmlns_bind then |
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150 resource = bind:child_with_name("resource"); |
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151 if resource then |
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152 resource = resource[1]; |
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153 end |
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154 end |
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155 end |
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156 local success, err_type, err, err_msg = sm_bind_resource(session, resource); |
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157 if not success then |
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158 session.send(st.error_reply(stanza, err_type, err, err_msg)); |
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159 else |
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160 session.send(st.reply(stanza) |
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161 :tag("bind", { xmlns = xmlns_bind}) |
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162 :tag("jid"):text(session.full_jid)); |
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163 end |
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164 end); |
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165 |
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166 module:add_iq_handler("c2s", "urn:ietf:params:xml:ns:xmpp-session", |
46
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167 function (session, stanza) |
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168 log("debug", "Client requesting a session"); |
313
a273f3a7b8f8
Fixed mod_saslauth to use session.send for sending stanzas
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169 session.send(st.reply(stanza)); |
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170 end); |