1 /*
2 * libjingle
3 * Copyright 2004--2005, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "talk/examples/login/xmppauth.h"
29
30 #include <algorithm>
31
32 #include "talk/xmpp/saslcookiemechanism.h"
33 #include "talk/xmpp/saslplainmechanism.h"
34
XmppAuth()35 XmppAuth::XmppAuth() : done_(false) {
36 }
37
~XmppAuth()38 XmppAuth::~XmppAuth() {
39 }
40
StartPreXmppAuth(const buzz::Jid & jid,const talk_base::SocketAddress & server,const talk_base::CryptString & pass,const std::string & auth_cookie)41 void XmppAuth::StartPreXmppAuth(const buzz::Jid & jid,
42 const talk_base::SocketAddress & server,
43 const talk_base::CryptString & pass,
44 const std::string & auth_cookie) {
45 jid_ = jid;
46 passwd_ = pass;
47 auth_cookie_ = auth_cookie;
48 done_ = true;
49
50 SignalAuthDone();
51 }
52
ChooseBestSaslMechanism(const std::vector<std::string> & mechanisms,bool encrypted)53 std::string XmppAuth::ChooseBestSaslMechanism(
54 const std::vector<std::string> & mechanisms,
55 bool encrypted) {
56 std::vector<std::string>::const_iterator it;
57
58 // A token is the weakest auth - 15s, service-limited, so prefer it.
59 it = std::find(mechanisms.begin(), mechanisms.end(), "X-GOOGLE-TOKEN");
60 if (it != mechanisms.end() && !auth_cookie_.empty())
61 return "X-GOOGLE-TOKEN";
62
63 // A cookie is the next weakest - 14 days.
64 it = std::find(mechanisms.begin(), mechanisms.end(), "X-GOOGLE-COOKIE");
65 if (it != mechanisms.end() && !auth_cookie_.empty())
66 return "X-GOOGLE-COOKIE";
67
68 // As a last resort, use plain authentication.
69 it = std::find(mechanisms.begin(), mechanisms.end(), "PLAIN");
70 if (it != mechanisms.end())
71 return "PLAIN";
72
73 // No good mechanism found
74 return "";
75 }
76
CreateSaslMechanism(const std::string & mechanism)77 buzz::SaslMechanism* XmppAuth::CreateSaslMechanism(
78 const std::string & mechanism) {
79 if (mechanism == "X-GOOGLE-TOKEN") {
80 return new buzz::SaslCookieMechanism(mechanism, jid_.Str(), auth_cookie_);
81 //} else if (mechanism == "X-GOOGLE-COOKIE") {
82 // return new buzz::SaslCookieMechanism(mechanism, jid.Str(), sid_);
83 } else if (mechanism == "PLAIN") {
84 return new buzz::SaslPlainMechanism(jid_, passwd_);
85 } else {
86 return NULL;
87 }
88 }
89