Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/secureclient_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Base/IPC/secureserver/secureclient.cpp</h1><a href="secureclient_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// This client executable has all required capabilities to modify a file.</span>
<a name="l00015"></a>00015 <span class="comment">// Demonstrates all functionalities provided by the client side interface of the server.</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="secureclientandserver_8h.html">secureclientandserver.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="secureclient_8h.html">secureclient.h</a>"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 LOCAL_D CConsoleBase* console;
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keywordtype">void</span> DoExampleL()
<a name="l00029"></a>00029 {
<a name="l00030"></a>00030 console->Printf(KTxtTestingCountServer);
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="comment">// Create a session.</span>
<a name="l00033"></a>00033 <a class="code" href="class_r_secure_session.html">RSecureSession</a> countserv;
<a name="l00034"></a>00034 User::LeaveIfError(countserv.<a class="code" href="class_r_secure_session.html#aacec76ae20ca1a96380f33b82e85b271">Connect</a>());
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// Create a sub session.</span>
<a name="l00037"></a>00037 <a class="code" href="class_r_secure_sub_session.html">RSecureSubSession</a> counterA;
<a name="l00038"></a>00038 counterA.Open(countserv);
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="comment">// The user can choose to initialise the counter from the counter.dat file.</span>
<a name="l00041"></a>00041 console->Printf(KTxtInitCounterAWith);
<a name="l00042"></a>00042 console->Printf(KTxtOption);
<a name="l00043"></a>00043 TUint8 inpOption = console->Getch();
<a name="l00044"></a>00044 <span class="keywordflow">if</span>(inpOption == <span class="charliteral">'1'</span>)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 <span class="comment">// This call will fail if the client executable does not have required file read capability.</span>
<a name="l00047"></a>00047 counterA.SetCounterFromFileL();
<a name="l00048"></a>00048 console->Printf(KTxtInitFromFile,counterA.CounterValueL());
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 <span class="keywordflow">else</span>
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 <span class="comment">// This is an invalid initialisation string. Hence, the counter will be initialised to zero.</span>
<a name="l00053"></a>00053 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtValueString,<span class="stringliteral">"a2"</span>);
<a name="l00054"></a>00054 console->Printf(KTxtValueString);
<a name="l00055"></a>00055 <span class="comment">// Set counter from the KTxtValueString string</span>
<a name="l00056"></a>00056 TInt err = counterA.SetFromString(KTxtValueString);
<a name="l00057"></a>00057 <span class="keywordflow">if</span> (err == <a class="code" href="secureclientandserver_8h.html#ac31a03d737c6ab16ba55ceab73d57b71ae3a6b8e17c25d02a3ae9ca7362ba4d0c">ENonNumericString</a>)
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 <span class="comment">// Print an error message as the initialisation string, KTxtValueString is invalid (non numeric format).</span>
<a name="l00060"></a>00060 console->Printf(KTxtInitCounterFailed);
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 <span class="keywordflow">else</span>
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="comment">// Initialisation from string succeeded.</span>
<a name="l00065"></a>00065 console->Printf(KTxtInitCounterSucceeded);
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068 <a class="code" href="class_r_secure_sub_session.html">RSecureSubSession</a> counterB;
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// Create a sub session.</span>
<a name="l00071"></a>00071 counterB.<a class="code" href="class_r_secure_sub_session.html#a490095bd4d40f65ea15f14d5fe481b71">Open</a>(countserv);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// The user can choose to initialise the counter from the counter.dat file.</span>
<a name="l00074"></a>00074 console->Printf(KTxtInitCounterBWith);
<a name="l00075"></a>00075 console->Printf(KTxtOption);
<a name="l00076"></a>00076 inpOption = console->Getch();
<a name="l00077"></a>00077 <span class="keywordflow">if</span>(inpOption == <span class="charliteral">'1'</span>)
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 <span class="comment">// This call will fail if the client executable does not have required file read capability.</span>
<a name="l00080"></a>00080 counterB.<a class="code" href="class_r_secure_sub_session.html#ab9758c1131b23ed928fadee2a959e23e">SetCounterFromFileL</a>();
<a name="l00081"></a>00081 console->Printf(KTxtInitFromFile,counterB.<a class="code" href="class_r_secure_sub_session.html#af205b880df310c24f47ce91ca6261a1d">CounterValueL</a>());
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 <span class="keywordflow">else</span>
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <span class="comment">// A valid numeric string.</span>
<a name="l00086"></a>00086 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxtLegalString,<span class="stringliteral">"100"</span>);
<a name="l00087"></a>00087 console->Printf(KTxtLegalString);
<a name="l00088"></a>00088 <span class="comment">// Set counter from the KTxtLegalString string.</span>
<a name="l00089"></a>00089 TInt err = counterB.<a class="code" href="class_r_secure_sub_session.html#af5aeec70e2056cbbeb64141573ff8f2c">SetFromString</a>(KTxtLegalString);
<a name="l00090"></a>00090 <span class="keywordflow">if</span> (err == <a class="code" href="secureclientandserver_8h.html#ac31a03d737c6ab16ba55ceab73d57b71ae3a6b8e17c25d02a3ae9ca7362ba4d0c">ENonNumericString</a>)
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <span class="comment">// Print an error message as the initialisation string, KTxtValueString is invalid (non numeric format).</span>
<a name="l00093"></a>00093 console->Printf(KTxtInitCounterFailed);
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 <span class="keywordflow">else</span>
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 <span class="comment">// Initialisation from string succeeded.</span>
<a name="l00098"></a>00098 <span class="comment">// Counter is initialised to 100.</span>
<a name="l00099"></a>00099 console->Printf(KTxtInitCounterSucceeded);
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 }
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="comment">// Wait for a key press.</span>
<a name="l00104"></a>00104 console->Printf(KMsgPressAnyKey);
<a name="l00105"></a>00105 console->Getch();
<a name="l00106"></a>00106 console->ClearScreen();
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="comment">// Print values of both counters.</span>
<a name="l00109"></a>00109 console->Printf(KTxtGetCounterAValue,counterA.CounterValueL());
<a name="l00110"></a>00110 console->Printf(KTxtGetCounterBValue,counterB.<a class="code" href="class_r_secure_sub_session.html#af205b880df310c24f47ce91ca6261a1d">CounterValueL</a>());
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="comment">// Wait for a key press.</span>
<a name="l00113"></a>00113 console->Printf(KMsgPressAnyKey);
<a name="l00114"></a>00114 console->Getch();
<a name="l00115"></a>00115 console->ClearScreen();
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="comment">// Increase the counter value by 1 and print it.</span>
<a name="l00118"></a>00118 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt1,<span class="stringliteral">"\nIncrease counterA by default value (i.e. 1)..\n"</span>);
<a name="l00119"></a>00119 console->Printf(KTxt1);
<a name="l00120"></a>00120 counterA.Increase();
<a name="l00121"></a>00121 console->Printf(KTxtGetCounterAValue,counterA.CounterValueL());
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="comment">// Increase the counter by a value greater than 1 and print it.</span>
<a name="l00124"></a>00124 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt2,<span class="stringliteral">"\nIncrease counterA by 2..\n"</span>);
<a name="l00125"></a>00125 console->Printf(KTxt2);
<a name="l00126"></a>00126 <span class="comment">// IncreaseByL operation undergoes a custom security check.</span>
<a name="l00127"></a>00127 <span class="comment">// If the value is greater than 10 and the SID is greater than 0x70fffff5, it fails.</span>
<a name="l00128"></a>00128 counterA.IncreaseByL(2);
<a name="l00129"></a>00129 console->Printf(KTxtGetCounterAValue,counterA.CounterValueL());
<a name="l00130"></a>00130
<a name="l00131"></a>00131 <span class="comment">// Increase the counter value by 1 and print it.</span>
<a name="l00132"></a>00132 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt3,<span class="stringliteral">"\nIncrease counterB by default value (i.e. 1)..\n"</span>);
<a name="l00133"></a>00133 console->Printf(KTxt3);
<a name="l00134"></a>00134 counterB.<a class="code" href="class_r_secure_sub_session.html#aa33648763c953202fb21f037b2d413e9">Increase</a>();
<a name="l00135"></a>00135 console->Printf(KTxtGetCounterBValue,counterB.<a class="code" href="class_r_secure_sub_session.html#af205b880df310c24f47ce91ca6261a1d">CounterValueL</a>());
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">// Increase the counter by a value greater than 1 and print it.</span>
<a name="l00138"></a>00138 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt4,<span class="stringliteral">"\nIncrease counterA by 17..\n"</span>);
<a name="l00139"></a>00139 console->Printf(KTxt4);
<a name="l00140"></a>00140 <span class="comment">// Fails if the SID is greater than 0x70fffff5</span>
<a name="l00141"></a>00141 counterA.IncreaseByL(17);
<a name="l00142"></a>00142 console->Printf(KTxtGetCounterAValue,counterA.CounterValueL());
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="comment">// Wait for a key press.</span>
<a name="l00145"></a>00145 console->Printf(KMsgPressAnyKey);
<a name="l00146"></a>00146 console->Getch();
<a name="l00147"></a>00147 console->ClearScreen();
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="comment">// Increase the counter by a value greater than 1 and print it.</span>
<a name="l00150"></a>00150 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt5,<span class="stringliteral">"\nIncrease counterB by 5..\n"</span>);
<a name="l00151"></a>00151 console->Printf(KTxt5);
<a name="l00152"></a>00152 counterB.<a class="code" href="class_r_secure_sub_session.html#a9342022cfba8bec8db374364fc08fab6">IncreaseByL</a>(5);
<a name="l00153"></a>00153 console->Printf(KTxtGetCounterBValue,counterB.<a class="code" href="class_r_secure_sub_session.html#af205b880df310c24f47ce91ca6261a1d">CounterValueL</a>());
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="comment">// Decrease the counter value by 1 and print it.</span>
<a name="l00156"></a>00156 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt6,<span class="stringliteral">"\nDecrease counterA..\n"</span>);
<a name="l00157"></a>00157 console->Printf(KTxt6);
<a name="l00158"></a>00158 counterA.Decrease();
<a name="l00159"></a>00159 console->Printf(KTxtGetCounterAValue,counterA.CounterValueL());
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="comment">// Decrease the counter by a value greater than 1 and print it.</span>
<a name="l00162"></a>00162 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt7,<span class="stringliteral">"\nDecrease counterB by 3..\n"</span>);
<a name="l00163"></a>00163 console->Printf(KTxt7);
<a name="l00164"></a>00164 console->Printf(KTxtGetCounterBValue,counterB.<a class="code" href="class_r_secure_sub_session.html#af205b880df310c24f47ce91ca6261a1d">CounterValueL</a>());
<a name="l00165"></a>00165 <span class="comment">// DecreaseByL operation undergoes a custom security check.</span>
<a name="l00166"></a>00166 <span class="comment">// If the value is greater than 10 and the SID is greater than 0x70fffff5, it fails.</span>
<a name="l00167"></a>00167 counterB.<a class="code" href="class_r_secure_sub_session.html#a1cc1a1a8ecfb898713f681cfe76701cb">DecreaseByL</a>(3);
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">// Print the resource count of the server.</span>
<a name="l00170"></a>00170 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt8,<span class="stringliteral">"\nResource count is.. %d \n"</span>);
<a name="l00171"></a>00171 console->Printf(KTxt8,countserv.<a class="code" href="class_r_secure_session.html#a5ad87a05e485af49ed9b599d420c81ef">ResourceCountL</a>());
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="comment">// The user can save the counter value to a file.</span>
<a name="l00174"></a>00174 console->Printf(KTxtSaveToFile);
<a name="l00175"></a>00175 TUint8 sel = console->Getch();
<a name="l00176"></a>00176 <span class="keywordflow">if</span>(sel == <span class="charliteral">'a'</span>)
<a name="l00177"></a>00177 {
<a name="l00178"></a>00178 <span class="comment">// Save the value of the counter A.</span>
<a name="l00179"></a>00179 console->Printf(KTxtSelectCounter,sel);
<a name="l00180"></a>00180 console->Printf(KTxtSaveCounter);
<a name="l00181"></a>00181 <span class="comment">// This call will fail if the client executable does not have required file write capability.</span>
<a name="l00182"></a>00182 counterA.SaveCounterL();
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(sel == <span class="charliteral">'b'</span>)
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 <span class="comment">// Save the value of the counter B.</span>
<a name="l00187"></a>00187 console->Printf(KTxtSelectCounter,sel);
<a name="l00188"></a>00188 console->Printf(KTxtSaveCounter);
<a name="l00189"></a>00189 <span class="comment">// This call will fail if the client executable does not have required file write capability.</span>
<a name="l00190"></a>00190 counterB.<a class="code" href="class_r_secure_sub_session.html#a97d7a09b2347f1ef4f476feaaaa5f781">SaveCounterL</a>();
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="comment">// Close both sub sessions and the main session.</span>
<a name="l00194"></a>00194 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KTxt9,<span class="stringliteral">"\nClosing counterA and then CounterB..\n"</span>);
<a name="l00195"></a>00195 console->Printf(KTxt9);
<a name="l00196"></a>00196 counterA.Close();
<a name="l00197"></a>00197 counterB.<a class="code" href="class_r_secure_sub_session.html#aac12680343af53cd4737699847905cb9">Close</a>();
<a name="l00198"></a>00198 countserv.<a class="code" href="class_r_secure_session.html#a8c3903876a6e715f94bc6d4f762e3fa1">Close</a>();
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200
<a name="l00201"></a><a class="code" href="secureclient_8cpp.html#a0f358e9c4355138f629b8c4f37310295">00201</a> GLDEF_C TInt E32Main()
<a name="l00202"></a>00202 {
<a name="l00203"></a>00203 __UHEAP_MARK;
<a name="l00204"></a>00204 CTrapCleanup* cleanup = CTrapCleanup::New();
<a name="l00205"></a>00205
<a name="l00206"></a>00206 TRAPD(createError, console = Console::NewL(KTextConsoleTitle, TSize(KConsFullScreen,KConsFullScreen)));
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (createError)
<a name="l00208"></a>00208 <span class="keywordflow">return</span> createError;
<a name="l00209"></a>00209
<a name="l00210"></a>00210 TRAPD(mainError, DoExampleL());
<a name="l00211"></a>00211 <span class="keywordflow">if</span> (mainError)
<a name="l00212"></a>00212 console->Printf(KTextFailed, mainError);
<a name="l00213"></a>00213 console->Printf(KTextPressAnyKey);
<a name="l00214"></a>00214 console->Getch();
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="keyword">delete</span> console;
<a name="l00217"></a>00217 <span class="keyword">delete</span> cleanup;
<a name="l00218"></a>00218 __UHEAP_MARKEND;
<a name="l00219"></a>00219 <span class="keywordflow">return</span> KErrNone;
<a name="l00220"></a>00220 }
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