31
|
1 |
/*
|
|
2 |
* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
|
3 |
* All rights reserved.
|
|
4 |
* This component and the accompanying materials are made available
|
|
5 |
* under the terms of "Eclipse Public License v1.0"
|
|
6 |
* which accompanies this distribution, and is available
|
|
7 |
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
8 |
*
|
|
9 |
* Initial Contributors:
|
|
10 |
* Nokia Corporation - initial contribution.
|
|
11 |
*
|
|
12 |
* Contributors:
|
|
13 |
*
|
|
14 |
* Description:
|
|
15 |
* Main implementation of Wlan Sniffer Keepalive application.
|
|
16 |
*/
|
|
17 |
|
|
18 |
// System include files
|
|
19 |
|
|
20 |
#include <rconnmon.h>
|
|
21 |
|
|
22 |
// User include files
|
|
23 |
|
|
24 |
#include "wsfkeepalivetimer.h"
|
|
25 |
#include "wsfkeepaliveconnmon.h"
|
|
26 |
#include "wsfkeepaliveconnmondisc.h"
|
|
27 |
#include "wsfkeepaliveesock.h"
|
|
28 |
#include "wsfkeepalive.h"
|
|
29 |
#include "OstTraceDefinitions.h"
|
|
30 |
#ifdef OST_TRACE_COMPILER_IN_USE
|
|
31 |
#include "wsfkeepaliveTraces.h"
|
|
32 |
#endif
|
|
33 |
|
|
34 |
// External function prototypes
|
|
35 |
|
|
36 |
// Local constants
|
|
37 |
|
|
38 |
// We need to poll for client info every 5 seconds
|
|
39 |
static const int KKeepalivePollInterval = 5000000;
|
|
40 |
|
|
41 |
// We can close a connection after 5 minutes of inactivity
|
|
42 |
static const int KKeepaliveInactivityInterval = 300;
|
|
43 |
|
|
44 |
// UID of Wlan sniffer application
|
|
45 |
static const TUid KWlanSnifferUid = { 0x10281CAA };
|
|
46 |
|
|
47 |
// List of UIDs of clients not considered as "real"
|
|
48 |
static const TUid KDiscardedClientUids[] =
|
|
49 |
{
|
|
50 |
{ 0x2002FF5F }, // Sniffer keepalive process, that is, us
|
|
51 |
KWlanSnifferUid, // Sniffer application (wlansniffer.exe)
|
|
52 |
{ 0x101fD9C5 } // DHCP server (dhcpserv.exe)
|
|
53 |
};
|
|
54 |
|
|
55 |
// ======== LOCAL FUNCTIONS ========
|
|
56 |
|
|
57 |
// ======== MEMBER FUNCTIONS ========
|
|
58 |
|
|
59 |
CWsfKeepalive* CWsfKeepalive::NewL()
|
|
60 |
{
|
|
61 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_NEWL_ENTRY );
|
|
62 |
|
|
63 |
CWsfKeepalive* me = new ( ELeave ) CWsfKeepalive();
|
|
64 |
CleanupStack::PushL( me );
|
|
65 |
me->ConstructL();
|
|
66 |
CleanupStack::Pop( me );
|
|
67 |
|
|
68 |
OstTraceFunctionExit0( CWSFKEEPALIVE_NEWL_EXIT );
|
|
69 |
return me;
|
|
70 |
}
|
|
71 |
|
|
72 |
CWsfKeepalive::~CWsfKeepalive()
|
|
73 |
{
|
|
74 |
OstTraceFunctionEntry0( DUP1_CWSFKEEPALIVE_CWSFKEEPALIVE_ENTRY );
|
|
75 |
|
|
76 |
delete iEsock;
|
|
77 |
delete iConnMonDisc;
|
|
78 |
delete iConnMon;
|
|
79 |
delete iTimer;
|
|
80 |
|
|
81 |
OstTraceFunctionExit0( DUP1_CWSFKEEPALIVE_CWSFKEEPALIVE_EXIT );
|
|
82 |
}
|
|
83 |
|
|
84 |
void CWsfKeepalive::TimerExpired( TInt aError )
|
|
85 |
{
|
|
86 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_TIMEREXPIRED_ENTRY );
|
|
87 |
|
|
88 |
TBool restartTimer = ETrue; // Should we restart timer or not?
|
|
89 |
if ( aError == KErrNone )
|
|
90 |
{
|
|
91 |
// Timer successfully completed, handle it
|
|
92 |
if ( NoRealClients( iConnectionId ) )
|
|
93 |
{
|
|
94 |
TTime now;
|
|
95 |
now.UniversalTime();
|
|
96 |
|
|
97 |
// Check whether we are moving from EActiveWithClients to
|
|
98 |
// EActiveNoClients
|
|
99 |
if ( iState == EActiveWithClients )
|
|
100 |
{
|
|
101 |
OstTrace0(
|
|
102 |
TRACE_NORMAL,
|
|
103 |
CWSFKEEPALIVE_TIMEREXPIRED_RESET,
|
|
104 |
"CWsfKeepalive::TimerExpired Keepalive time reset" );
|
|
105 |
|
|
106 |
// Connection had clients, but doesn't anymore. Keepalive
|
|
107 |
// inactivity time starts now
|
|
108 |
iKeepaliveStart = now;
|
|
109 |
}
|
|
110 |
// Check whether keepalive time has been reached
|
|
111 |
else if ( iKeepaliveStart +
|
|
112 |
TTimeIntervalSeconds( KKeepaliveInactivityInterval ) <= now )
|
|
113 |
{
|
|
114 |
OstTrace0(
|
|
115 |
TRACE_NORMAL,
|
|
116 |
CWSFKEEPALIVE_TIMEREXPIRED_DONE,
|
|
117 |
"CWsfKeepalive::TimerExpired Keepalive time expired" );
|
|
118 |
|
|
119 |
// Keepalive time limit expired, connection should be stopped
|
|
120 |
iEsock->Disconnect();
|
|
121 |
iConnMonDisc->Disconnect( iConnectionId );
|
|
122 |
restartTimer = EFalse;
|
|
123 |
}
|
|
124 |
|
|
125 |
// There are now no real clients for the connection
|
|
126 |
SetState( EActiveNoClients );
|
|
127 |
}
|
|
128 |
else
|
|
129 |
{
|
|
130 |
// One or more real clients are using the connection
|
|
131 |
SetState( EActiveWithClients );
|
|
132 |
}
|
|
133 |
}
|
|
134 |
else
|
|
135 |
{
|
|
136 |
// Timer not successful, probably because we stopped it
|
|
137 |
restartTimer = EFalse;
|
|
138 |
}
|
|
139 |
|
|
140 |
if ( restartTimer )
|
|
141 |
{
|
|
142 |
TTimeIntervalMicroSeconds32 interval( KKeepalivePollInterval );
|
|
143 |
iTimer->After( interval );
|
|
144 |
}
|
|
145 |
|
|
146 |
OstTraceFunctionExit0( CWSFKEEPALIVE_TIMEREXPIRED_EXIT );
|
|
147 |
}
|
|
148 |
|
|
149 |
void CWsfKeepalive::WlanConnectionOpenedL( TUint aConnectionId, TUint aIapId )
|
|
150 |
{
|
|
151 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_WLANCONNECTIONOPENEDL_ENTRY );
|
|
152 |
|
|
153 |
OstTraceExt2(
|
|
154 |
TRACE_NORMAL,
|
|
155 |
CWSFKEEPALIVE_WLANCONNECTIONOPENED,
|
|
156 |
"CWsfKeepalive::WlanConnectionOpened;aConnectionId=%u;aIapId=%u",
|
|
157 |
aConnectionId,
|
|
158 |
aIapId );
|
|
159 |
|
|
160 |
// We are only interested in connections opened by the Wlan Sniffer
|
|
161 |
if ( OpenedByWlanSniffer( aConnectionId ) )
|
|
162 |
{
|
|
163 |
// Start to monitor this connection, and add us as a user to the
|
|
164 |
// connection
|
|
165 |
iConnectionId = aConnectionId;
|
|
166 |
iEsock->ConnectL( aIapId );
|
|
167 |
|
|
168 |
// Assume there are no real clients yet. Setup timer for polling
|
|
169 |
// when real clients might be added to the connection
|
|
170 |
SetState( EActiveNoClients );
|
|
171 |
iKeepaliveStart.UniversalTime();
|
|
172 |
|
|
173 |
OstTrace0(
|
|
174 |
TRACE_NORMAL,
|
|
175 |
CWSFKEEPALIVE_WLANCONNECTIONOPENED_RESET,
|
|
176 |
"CWsfKeepalive::WlanConnectionOpened Keepalive time reset" );
|
|
177 |
|
|
178 |
TTimeIntervalMicroSeconds32 interval( KKeepalivePollInterval );
|
|
179 |
iTimer->After( interval );
|
|
180 |
}
|
|
181 |
|
|
182 |
OstTraceFunctionExit0( CWSFKEEPALIVE_WLANCONNECTIONOPENEDL_EXIT );
|
|
183 |
}
|
|
184 |
|
|
185 |
void CWsfKeepalive::WlanConnectionClosed()
|
|
186 |
{
|
|
187 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_WLANCONNECTIONCLOSED_ENTRY );
|
|
188 |
|
|
189 |
// No need to monitor anything anymore
|
|
190 |
SetState( EInactive );
|
|
191 |
iConnectionId = KInvalidConnectionId;
|
|
192 |
// Stop also the polling timer
|
|
193 |
iTimer->Stop();
|
|
194 |
|
|
195 |
OstTraceFunctionExit0( CWSFKEEPALIVE_WLANCONNECTIONCLOSED_EXIT );
|
|
196 |
}
|
|
197 |
|
|
198 |
// ---------------------------------------------------------------------------
|
|
199 |
// Default constructor
|
|
200 |
// ---------------------------------------------------------------------------
|
|
201 |
//
|
|
202 |
CWsfKeepalive::CWsfKeepalive() :
|
|
203 |
iConnectionId( KInvalidConnectionId ),
|
|
204 |
iState( EInactive )
|
|
205 |
{
|
|
206 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_CWSFKEEPALIVE_ENTRY );
|
|
207 |
OstTraceFunctionExit0( CWSFKEEPALIVE_CWSFKEEPALIVE_EXIT );
|
|
208 |
}
|
|
209 |
|
|
210 |
// ---------------------------------------------------------------------------
|
|
211 |
// Leaving constructor
|
|
212 |
// ---------------------------------------------------------------------------
|
|
213 |
//
|
|
214 |
void CWsfKeepalive::ConstructL()
|
|
215 |
{
|
|
216 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_CONSTRUCTL_ENTRY );
|
|
217 |
|
|
218 |
iTimer = CWsfKeepaliveTimer::NewL( *this );
|
|
219 |
iConnMon = CWsfKeepaliveConnMon::NewL( *this );
|
|
220 |
iConnMonDisc = CWsfKeepaliveConnMonDisc::NewL();
|
|
221 |
iEsock = CWsfKeepaliveEsock::NewL();
|
|
222 |
|
|
223 |
OstTraceFunctionExit0( CWSFKEEPALIVE_CONSTRUCTL_EXIT );
|
|
224 |
}
|
|
225 |
|
|
226 |
// ---------------------------------------------------------------------------
|
|
227 |
// Checks whether the given connection was opened by the Wlan Sniffer
|
|
228 |
// application
|
|
229 |
// ---------------------------------------------------------------------------
|
|
230 |
//
|
|
231 |
TBool CWsfKeepalive::OpenedByWlanSniffer( TUint aConnectionId )
|
|
232 |
{
|
|
233 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_OPENEDBYWLANSNIFFER_ENTRY );
|
|
234 |
|
|
235 |
TBool retVal = EFalse;
|
|
236 |
|
|
237 |
// Get all clients of this connection
|
|
238 |
TConnMonClientEnumBuf clientInfo;
|
|
239 |
iConnMon->GetClientInfo( clientInfo, aConnectionId );
|
|
240 |
|
|
241 |
// Check whether Wlan sniffer is one of the clients
|
|
242 |
for ( TInt i( 0 ); i < clientInfo().iCount; ++i )
|
|
243 |
{
|
|
244 |
if ( clientInfo().iUid[i] == KWlanSnifferUid )
|
|
245 |
{
|
|
246 |
// Match found, stop looking
|
|
247 |
retVal = ETrue;
|
|
248 |
break;
|
|
249 |
}
|
|
250 |
}
|
|
251 |
|
|
252 |
OstTraceExt2(
|
|
253 |
TRACE_NORMAL,
|
|
254 |
CWSFKEEPALIVE_OPENEDBYWLANSNIFFER,
|
|
255 |
"CWsfKeepalive::OpenedByWlanSniffer;aConnectionId=%u;retVal=%u",
|
|
256 |
aConnectionId,
|
|
257 |
retVal );
|
|
258 |
|
|
259 |
OstTraceFunctionExit0( CWSFKEEPALIVE_OPENEDBYWLANSNIFFER_EXIT );
|
|
260 |
return retVal;
|
|
261 |
}
|
|
262 |
|
|
263 |
// ---------------------------------------------------------------------------
|
|
264 |
// Checks whether there are any real clients using the given connection
|
|
265 |
// ---------------------------------------------------------------------------
|
|
266 |
//
|
|
267 |
TBool CWsfKeepalive::NoRealClients( TUint aConnectionId )
|
|
268 |
{
|
|
269 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_NOREALCLIENTS_ENTRY );
|
|
270 |
|
|
271 |
// Get all clients of this connection
|
|
272 |
TConnMonClientEnumBuf clientInfo;
|
|
273 |
iConnMon->GetClientInfo( clientInfo, aConnectionId );
|
|
274 |
|
|
275 |
// Get the client count
|
|
276 |
TInt clientCount = clientInfo().iCount;
|
|
277 |
|
|
278 |
TInt discardedClientCount = sizeof( KDiscardedClientUids ) / sizeof( TUid );
|
|
279 |
|
|
280 |
// Decrease count by each non-real client we must discard
|
|
281 |
for ( TInt i( 0 ); i < clientInfo().iCount; ++i )
|
|
282 |
{
|
|
283 |
for ( TInt j( 0 ); j < discardedClientCount; ++j )
|
|
284 |
{
|
|
285 |
if ( clientInfo().iUid[i] == KDiscardedClientUids[j] )
|
|
286 |
{
|
|
287 |
OstTrace1(
|
|
288 |
TRACE_NORMAL,
|
|
289 |
CWSFKEEPALIVE_NOREALCLIENTS_DISCARD,
|
|
290 |
"CWsfKeepalive::NoRealClients Client discarded;clientInfo().iUid[i].iUid=%x",
|
|
291 |
clientInfo().iUid[i].iUid );
|
|
292 |
--clientCount;
|
|
293 |
break;
|
|
294 |
}
|
|
295 |
}
|
|
296 |
}
|
|
297 |
|
|
298 |
// If we reached zero, there were no real clients
|
|
299 |
TBool retVal = clientCount == 0 ? ETrue : EFalse;
|
|
300 |
OstTraceExt2(
|
|
301 |
TRACE_NORMAL,
|
|
302 |
CWSFKEEPALIVE_NOREALCLIENTS,
|
|
303 |
"CWsfKeepalive::NoRealClients;aConnectionId=%u;retVal=%u",
|
|
304 |
aConnectionId,
|
|
305 |
retVal );
|
|
306 |
|
|
307 |
OstTraceFunctionExit0( CWSFKEEPALIVE_NOREALCLIENTS_EXIT );
|
|
308 |
return retVal;
|
|
309 |
}
|
|
310 |
|
|
311 |
// ---------------------------------------------------------------------------
|
|
312 |
// Sets the given state and traces the transition, if state changed.
|
|
313 |
// ---------------------------------------------------------------------------
|
|
314 |
//
|
|
315 |
void CWsfKeepalive::SetState( TUint aState )
|
|
316 |
{
|
|
317 |
OstTraceFunctionEntry0( CWSFKEEPALIVE_SETSTATE_ENTRY );
|
|
318 |
|
|
319 |
#ifdef OST_TRACE_COMPILER_IN_USE
|
|
320 |
if ( aState != iState )
|
|
321 |
{
|
|
322 |
OstTrace1(
|
|
323 |
TRACE_NORMAL,
|
|
324 |
CWSFKEEPALIVE_SETSTATE,
|
|
325 |
"CWsfKeepalive::SetState;aState=%{State}",
|
|
326 |
aState );
|
|
327 |
}
|
|
328 |
#endif
|
|
329 |
iState = aState;
|
|
330 |
|
|
331 |
OstTraceFunctionExit0( CWSFKEEPALIVE_SETSTATE_EXIT );
|
|
332 |
}
|