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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"><title>Crypto++: winpipes.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.5.2 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>File Members</span></a></li> </ul></div><h1>winpipes.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// winpipes.cpp - written and placed in the public domain by Wei Dai</span><a name="l00002"></a>00002 <a name="l00003"></a>00003 <span class="preprocessor">#include "pch.h"</span><a name="l00004"></a>00004 <span class="preprocessor">#include "winpipes.h"</span><a name="l00005"></a>00005 <a name="l00006"></a>00006 <span class="preprocessor">#ifdef WINDOWS_PIPES_AVAILABLE</span><a name="l00007"></a>00007 <span class="preprocessor"></span><a name="l00008"></a>00008 <span class="preprocessor">#include "wait.h"</span><a name="l00009"></a>00009 <a name="l00010"></a>00010 NAMESPACE_BEGIN(CryptoPP)<a name="l00011"></a>00011 <a name="l00012"></a><a class="code" href="class_windows_handle.html#97071f4171fc127414260209d19b2725">00012</a> <a class="code" href="class_windows_handle.html" title="Windows Handle.">WindowsHandle</a>::<a class="code" href="class_windows_handle.html" title="Windows Handle.">WindowsHandle</a>(HANDLE h, <span class="keywordtype">bool</span> own)<a name="l00013"></a>00013 : m_h(h), m_own(own)<a name="l00014"></a>00014 {<a name="l00015"></a>00015 }<a name="l00016"></a>00016 <a name="l00017"></a><a class="code" href="class_windows_handle.html#dec8c4c03d7807bc8f37ec95b1243048">00017</a> <a class="code" href="class_windows_handle.html#dec8c4c03d7807bc8f37ec95b1243048">WindowsHandle::~WindowsHandle</a>()<a name="l00018"></a>00018 {<a name="l00019"></a>00019 <span class="keywordflow">if</span> (<a class="code" href="class_windows_handle.html#49430bf4fe2349afb452a79051579fda">m_own</a>)<a name="l00020"></a>00020 {<a name="l00021"></a>00021 <span class="keywordflow">try</span><a name="l00022"></a>00022 {<a name="l00023"></a>00023 <a class="code" href="class_windows_handle.html#7dd9cde3ad7e106a72b4545fae115296">CloseHandle</a>();<a name="l00024"></a>00024 }<a name="l00025"></a>00025 <span class="keywordflow">catch</span> (...)<a name="l00026"></a>00026 {<a name="l00027"></a>00027 }<a name="l00028"></a>00028 }<a name="l00029"></a>00029 }<a name="l00030"></a>00030 <a name="l00031"></a><a class="code" href="class_windows_handle.html#8176ee81240cc1add7184528fde31d91">00031</a> <span class="keywordtype">bool</span> <a class="code" href="class_windows_handle.html#8176ee81240cc1add7184528fde31d91">WindowsHandle::HandleValid</a>()<span class="keyword"> const</span><a name="l00032"></a>00032 <span class="keyword"></span>{<a name="l00033"></a>00033 <span class="keywordflow">return</span> <a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a> && <a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a> != INVALID_HANDLE_VALUE;<a name="l00034"></a>00034 }<a name="l00035"></a>00035 <a name="l00036"></a><a class="code" href="class_windows_handle.html#6f1053e346d9c41fe13df20c59624feb">00036</a> <span class="keywordtype">void</span> <a class="code" href="class_windows_handle.html#6f1053e346d9c41fe13df20c59624feb">WindowsHandle::AttachHandle</a>(HANDLE h, <span class="keywordtype">bool</span> own)<a name="l00037"></a>00037 {<a name="l00038"></a>00038 <span class="keywordflow">if</span> (<a class="code" href="class_windows_handle.html#49430bf4fe2349afb452a79051579fda">m_own</a>)<a name="l00039"></a>00039 <a class="code" href="class_windows_handle.html#7dd9cde3ad7e106a72b4545fae115296">CloseHandle</a>();<a name="l00040"></a>00040 <a name="l00041"></a>00041 <a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a> = h;<a name="l00042"></a>00042 <a class="code" href="class_windows_handle.html#49430bf4fe2349afb452a79051579fda">m_own</a> = own;<a name="l00043"></a>00043 <a class="code" href="class_windows_handle.html#56e2fb7427528e88472c684348adf962">HandleChanged</a>();<a name="l00044"></a>00044 }<a name="l00045"></a>00045 <a name="l00046"></a><a class="code" href="class_windows_handle.html#78a23c02b2d106dd51daf528c68bcd5a">00046</a> HANDLE <a class="code" href="class_windows_handle.html#78a23c02b2d106dd51daf528c68bcd5a">WindowsHandle::DetachHandle</a>()<a name="l00047"></a>00047 {<a name="l00048"></a>00048 HANDLE h = <a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a>;<a name="l00049"></a>00049 <a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a> = INVALID_HANDLE_VALUE;<a name="l00050"></a>00050 <a class="code" href="class_windows_handle.html#56e2fb7427528e88472c684348adf962">HandleChanged</a>();<a name="l00051"></a>00051 <span class="keywordflow">return</span> h;<a name="l00052"></a>00052 }<a name="l00053"></a>00053 <a name="l00054"></a><a class="code" href="class_windows_handle.html#7dd9cde3ad7e106a72b4545fae115296">00054</a> <span class="keywordtype">void</span> <a class="code" href="class_windows_handle.html#7dd9cde3ad7e106a72b4545fae115296">WindowsHandle::CloseHandle</a>()<a name="l00055"></a>00055 {<a name="l00056"></a>00056 <span class="keywordflow">if</span> (<a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a> != INVALID_HANDLE_VALUE)<a name="l00057"></a>00057 {<a class="code" href="class_windows_handle.html#7dd9cde3ad7e106a72b4545fae115296"></a><a name="l00058"></a>00058 <a class="code" href="class_windows_handle.html#7dd9cde3ad7e106a72b4545fae115296"> ::CloseHandle</a>(<a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a>);<a name="l00059"></a>00059 <a class="code" href="class_windows_handle.html#35a91e35ddc0e63850378f0abd5ab279">m_h</a> = INVALID_HANDLE_VALUE;<a name="l00060"></a>00060 <a class="code" href="class_windows_handle.html#56e2fb7427528e88472c684348adf962">HandleChanged</a>();<a name="l00061"></a>00061 }<a name="l00062"></a>00062 }<a name="l00063"></a>00063 <a name="l00064"></a>00064 <span class="comment">// ********************************************************</span><a name="l00065"></a>00065 <a name="l00066"></a><a class="code" href="class_windows_pipe.html#1df16059b04e2b291fcb14e8951be7f8">00066</a> <span class="keywordtype">void</span> <a class="code" href="class_windows_pipe.html#1df16059b04e2b291fcb14e8951be7f8">WindowsPipe::HandleError</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *operation)<span class="keyword"> const</span><a name="l00067"></a>00067 <span class="keyword"></span>{<a name="l00068"></a>00068 DWORD err = GetLastError();<a name="l00069"></a>00069 <span class="keywordflow">throw</span> <a class="code" href="class_windows_pipe_1_1_err.html">Err</a>(GetHandle(), operation, err);<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <a name="l00072"></a><a class="code" href="class_windows_pipe_1_1_err.html#91e471d1ef082989c22e36b1a3ec7d39">00072</a> <a class="code" href="class_windows_pipe_1_1_err.html#91e471d1ef082989c22e36b1a3ec7d39">WindowsPipe::Err::Err</a>(HANDLE s, <span class="keyword">const</span> std::string& operation, <span class="keywordtype">int</span> error)<a name="l00073"></a>00073 : <a class="code" href="class_o_s___error.html" title="error reported by the operating system">OS_Error</a>(IO_ERROR, <span class="stringliteral">"WindowsPipe: "</span> + operation + <span class="stringliteral">" operation failed with error 0x"</span> + IntToString(error, 16), operation, error)<a name="l00074"></a>00074 , m_h(s)<a name="l00075"></a>00075 {<a name="l00076"></a>00076 }<a name="l00077"></a>00077 <a name="l00078"></a>00078 <span class="comment">// *************************************************************</span><a name="l00079"></a>00079 <a name="l00080"></a><a class="code" href="class_windows_pipe_receiver.html#eda887045c6b713b59635653ec7b8d66">00080</a> <a class="code" href="class_windows_pipe_receiver.html#eda887045c6b713b59635653ec7b8d66">WindowsPipeReceiver::WindowsPipeReceiver</a>()<a name="l00081"></a>00081 : m_resultPending(false), m_eofReceived(false)<a name="l00082"></a>00082 {<a name="l00083"></a>00083 m_event.<a class="code" href="class_windows_handle.html#6f1053e346d9c41fe13df20c59624feb">AttachHandle</a>(CreateEvent(NULL, <span class="keyword">true</span>, <span class="keyword">false</span>, NULL), <span class="keyword">true</span>);<a name="l00084"></a>00084 <a class="code" href="class_windows_pipe.html#1fef189e62486afe4dbc03156ca67c50">CheckAndHandleError</a>(<span class="stringliteral">"CreateEvent"</span>, m_event.<a class="code" href="class_windows_handle.html#8176ee81240cc1add7184528fde31d91">HandleValid</a>());<a name="l00085"></a>00085 memset(&m_overlapped, 0, <span class="keyword">sizeof</span>(m_overlapped));<a name="l00086"></a>00086 m_overlapped.hEvent = m_event;<a name="l00087"></a>00087 }<a name="l00088"></a>00088 <a name="l00089"></a><a class="code" href="class_windows_pipe_receiver.html#97f6f63da2411395a55e416e0ea8b11b">00089</a> <span class="keywordtype">bool</span> <a class="code" href="class_windows_pipe_receiver.html#97f6f63da2411395a55e416e0ea8b11b" title="receive data from network source, returns whether result is immediately available...">WindowsPipeReceiver::Receive</a>(byte* buf, <span class="keywordtype">size_t</span> bufLen)<a name="l00090"></a>00090 {<a name="l00091"></a>00091 assert(!m_resultPending && !m_eofReceived);<a name="l00092"></a>00092 <a name="l00093"></a>00093 HANDLE h = GetHandle();<a name="l00094"></a>00094 <span class="comment">// don't queue too much at once, or we might use up non-paged memory</span><a name="l00095"></a>00095 <span class="keywordflow">if</span> (ReadFile(h, buf, UnsignedMin((DWORD)128*1024, bufLen), &m_lastResult, &m_overlapped))⌨️ 快捷键说明
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