1 //
2 // Copyright (C) 2013 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #ifndef SHILL_SUPPLICANT_SUPPLICANT_EAP_STATE_HANDLER_H_
18 #define SHILL_SUPPLICANT_SUPPLICANT_EAP_STATE_HANDLER_H_
19 
20 #include <string>
21 
22 #include "shill/service.h"
23 
24 namespace shill {
25 
26 // This object tracks the state of wpa_supplicant's EAP association.
27 // It parses events from wpa_supplicant and can notify callers when
28 // wpa_supplicant succeeds or fails authentication.  In the latter
29 // case it can explain the failure in detail based on the course of
30 // events leading up to it.
31 class SupplicantEAPStateHandler {
32  public:
33   SupplicantEAPStateHandler();
34   virtual ~SupplicantEAPStateHandler();
35 
36   // Receive the |status| and |parameter| from an EAP event and returns
37   // true if this state transition indicates that the EAP authentication
38   // process has succeeded.  If instead the EAP authentication has failed,
39   // |failure| will be set to reflect the type of failure that occurred,
40   // false will be returned.  If this EAP event has no direct outcome,
41   // this function returns false without changing |failure|.
42   virtual bool ParseStatus(const std::string& status,
43                            const std::string& parameter,
44                            Service::ConnectFailure* failure);
45 
46   // Resets the internal state of the handler.
47   virtual void Reset();
48 
is_eap_in_progress()49   virtual bool is_eap_in_progress() { return is_eap_in_progress_; }
50 
51  private:
52   friend class SupplicantEAPStateHandlerTest;
53 
54   // The stored TLS error type which may lead to an EAP failure.
55   std::string tls_error_;
56 
57   // Whether or not an EAP authentication is in progress.  Note
58   // specifically that an EAP failure in wpa_supplicant does not
59   // automatically cause the EAP process to stop, while success does.
60   bool is_eap_in_progress_;
61 };
62 
63 }  // namespace shill
64 
65 #endif  // SHILL_SUPPLICANT_SUPPLICANT_EAP_STATE_HANDLER_H_
66