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<a href="winshutdownmonitor_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright (c) 2014 The Bitcoin Core developers</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Distributed under the MIT software license, see the accompanying</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "<a class="code" href="winshutdownmonitor_8h.html">winshutdownmonitor.h</a>"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#if defined(Q_OS_WIN) && QT_VERSION >= 0x050000</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include "<a class="code" href="init_8h.html">init.h</a>"</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include "util.h"</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <windows.h></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <QDebug></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <openssl/rand.h></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// If we don't want a message to be processed by Qt, return true and set result to</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// the value that the window procedure should return. Otherwise return false.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keywordtype">bool</span> WinShutdownMonitor::nativeEventFilter(<span class="keyword">const</span> QByteArray &eventType, <span class="keywordtype">void</span> *pMessage, <span class="keywordtype">long</span> *pnResult)</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> {</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  Q_UNUSED(eventType);</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  MSG *pMsg = <span class="keyword">static_cast<</span>MSG *<span class="keyword">></span>(pMessage);</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="comment">// Seed OpenSSL PRNG with Windows event data (e.g. mouse movements and other user interactions)</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">if</span> (RAND_event(pMsg->message, pMsg->wParam, pMsg->lParam) == 0) {</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="comment">// Warn only once as this is performance-critical</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> warned = <span class="keyword">false</span>;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">if</span> (!warned) {</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <a class="code" href="util_8h.html#afc02c0a4258fedfb316be612bb659ba8">LogPrintf</a>(<span class="stringliteral">"%s: OpenSSL RAND_event() failed to seed OpenSSL PRNG with enough data.\n"</span>, __func__);</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  warned = <span class="keyword">true</span>;</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  }</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">switch</span>(pMsg->message)</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">case</span> WM_QUERYENDSESSION:</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="comment">// Initiate a client shutdown after receiving a WM_QUERYENDSESSION and block</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// Windows session end until we have finished client shutdown.</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="init_8cpp.html#ac7140c7327b1e6a8d46470b1cd0e8e1b">StartShutdown</a>();</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  *pnResult = FALSE;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">case</span> WM_ENDSESSION:</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  *pnResult = FALSE;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> }</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keywordtype">void</span> WinShutdownMonitor::registerShutdownBlockReason(<span class="keyword">const</span> QString& strReason, <span class="keyword">const</span> HWND& mainWinId)</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> {</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">typedef</span> BOOL (WINAPI *PSHUTDOWNBRCREATE)(HWND, LPCWSTR);</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  PSHUTDOWNBRCREATE shutdownBRCreate = (PSHUTDOWNBRCREATE)GetProcAddress(GetModuleHandleA(<span class="stringliteral">"User32.dll"</span>), <span class="stringliteral">"ShutdownBlockReasonCreate"</span>);</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (shutdownBRCreate == NULL) {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  qWarning() << <span class="stringliteral">"registerShutdownBlockReason: GetProcAddress for ShutdownBlockReasonCreate failed"</span>;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (shutdownBRCreate(mainWinId, strReason.toStdWString().c_str()))</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  qWarning() << <span class="stringliteral">"registerShutdownBlockReason: Successfully registered: "</span> + strReason;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  qWarning() << <span class="stringliteral">"registerShutdownBlockReason: Failed to register: "</span> + strReason;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> }</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="init_8h_html"><div class="ttname"><a href="init_8h.html">init.h</a></div></div>
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<div class="ttc" id="init_8cpp_html_ac7140c7327b1e6a8d46470b1cd0e8e1b"><div class="ttname"><a href="init_8cpp.html#ac7140c7327b1e6a8d46470b1cd0e8e1b">StartShutdown</a></div><div class="ttdeci">void StartShutdown()</div><div class="ttdef"><b>Definition:</b> <a href="init_8cpp_source.html#l00164">init.cpp:164</a></div></div>
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<div class="ttc" id="util_8h_html_afc02c0a4258fedfb316be612bb659ba8"><div class="ttname"><a href="util_8h.html#afc02c0a4258fedfb316be612bb659ba8">LogPrintf</a></div><div class="ttdeci">#define LogPrintf(...)</div><div class="ttdef"><b>Definition:</b> <a href="util_8h_source.html#l00098">util.h:98</a></div></div>
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<div class="ttc" id="winshutdownmonitor_8h_html"><div class="ttname"><a href="winshutdownmonitor_8h.html">winshutdownmonitor.h</a></div></div>
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