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<h1>LoggingServer.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Phusion Passenger - http://www.modrails.com/</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (c) 2010 Phusion</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * "Phusion Passenger" is a trademark of Hongli Lai & Ninh Bui.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span>
<a name="l00008"></a>00008 <span class="comment"> * of this software and associated documentation files (the "Software"), to deal</span>
<a name="l00009"></a>00009 <span class="comment"> * in the Software without restriction, including without limitation the rights</span>
<a name="l00010"></a>00010 <span class="comment"> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
<a name="l00011"></a>00011 <span class="comment"> * copies of the Software, and to permit persons to whom the Software is</span>
<a name="l00012"></a>00012 <span class="comment"> * furnished to do so, subject to the following conditions:</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * The above copyright notice and this permission notice shall be included in</span>
<a name="l00015"></a>00015 <span class="comment"> * all copies or substantial portions of the Software.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
<a name="l00018"></a>00018 <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
<a name="l00019"></a>00019 <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
<a name="l00020"></a>00020 <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
<a name="l00021"></a>00021 <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
<a name="l00022"></a>00022 <span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</span>
<a name="l00023"></a>00023 <span class="comment"> * THE SOFTWARE.</span>
<a name="l00024"></a>00024 <span class="comment"> */</span>
<a name="l00025"></a>00025 <span class="preprocessor">#ifndef _PASSENGER_LOGGING_SERVER_H_</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#define _PASSENGER_LOGGING_SERVER_H_</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <oxt/system_calls.hpp></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include <string></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <vector></span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <sys/stat.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <cstdio></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <cstdlib></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <cstring></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <grp.h></span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="preprocessor">#include "MessageServer.h"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include "Logging.h"</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "SystemTime.h"</span>
<a name="l00043"></a>00043 <span class="preprocessor">#include "Exceptions.h"</span>
<a name="l00044"></a>00044 <span class="preprocessor">#include "FileDescriptor.h"</span>
<a name="l00045"></a>00045 <span class="preprocessor">#include "Utils.h"</span>
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keyword">namespace </span>Passenger {
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">using namespace </span>std;
<a name="l00050"></a>00050 <span class="keyword">using namespace </span>oxt;
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keyword">class </span>LoggingServer: <span class="keyword">public</span> MessageServer::Handler {
<a name="l00053"></a>00053 <span class="keyword">private</span>:
<a name="l00054"></a>00054 <span class="keywordtype">string</span> dir;
<a name="l00055"></a>00055 <span class="keywordtype">string</span> dirPermissions;
<a name="l00056"></a>00056 mode_t filePermissions;
<a name="l00057"></a>00057 gid_t gid;
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="keyword">public</span>:
<a name="l00060"></a>00060 LoggingServer(<span class="keyword">const</span> <span class="keywordtype">string</span> &dir, <span class="keyword">const</span> <span class="keywordtype">string</span> &permissions = <span class="stringliteral">"u=rwx,g=rx,o=rx"</span>, gid_t gid = GROUP_NOT_GIVEN) {
<a name="l00061"></a>00061 this->dir = dir;
<a name="l00062"></a>00062 this->gid = gid;
<a name="l00063"></a>00063 dirPermissions = permissions;
<a name="l00064"></a>00064 filePermissions = <a class="code" href="namespacePassenger.html#da53f5a9bdcf3d22d4a710e7ea3678e9" title="Converts a mode string into a mode_t value.">parseModeString</a>(permissions) & ~(S_IXUSR | S_IXGRP | S_IXOTH);
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> processMessage(MessageServer::CommonClientContext &commonContext,
<a name="l00068"></a>00068 MessageServer::ClientContextPtr &handlerSpecificContext,
<a name="l00069"></a>00069 <span class="keyword">const</span> vector<string> &args)
<a name="l00070"></a>00070 {
<a name="l00071"></a>00071 <span class="keywordflow">if</span> (args[0] == <span class="stringliteral">"open log file"</span>) {
<a name="l00072"></a>00072 <span class="keywordtype">string</span> groupName = args[1];
<a name="l00073"></a>00073 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">long</span> timestamp = atoll(args[2].c_str());
<a name="l00074"></a>00074 <span class="keywordtype">string</span> category = args[3];
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keywordflow">if</span> (timestamp > <a class="code" href="classPassenger_1_1SystemTime.html#4e7110f4fb3fa2bfd646608f0ae8249d" title="Returns the time since the Epoch, measured in microseconds.">SystemTime::getUsec</a>()) {
<a name="l00077"></a>00077 commonContext.channel.write(<span class="stringliteral">"error"</span>,
<a name="l00078"></a>00078 <span class="stringliteral">"Timestamp may not be in the future"</span>, NULL);
<a name="l00079"></a>00079 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordtype">string</span> groupDir;
<a name="l00083"></a>00083 <span class="keywordtype">string</span> filename;
<a name="l00084"></a>00084 <span class="keywordflow">try</span> {
<a name="l00085"></a>00085 groupDir = TxnLogger::determineGroupDir(dir, groupName);
<a name="l00086"></a>00086 filename = TxnLogger::determineLogFilename(dir,
<a name="l00087"></a>00087 groupName, category, timestamp);
<a name="l00088"></a>00088 } <span class="keywordflow">catch</span> (<span class="keyword">const</span> ArgumentException &e) {
<a name="l00089"></a>00089 commonContext.channel.write(<span class="stringliteral">"error"</span>, e.what(), NULL);
<a name="l00090"></a>00090 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092
<a name="l00093"></a>00093 FileDescriptor fd;
<a name="l00094"></a>00094 <span class="keywordtype">int</span> ret;
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="keywordflow">try</span> {
<a name="l00097"></a>00097 <a class="code" href="namespacePassenger.html#448f25263af0b37b91caee3d294ec4aa" title="Create the directory at the given path, creating intermediate directories if necessary...">makeDirTree</a>(<a class="code" href="group__Support.html#ge651ece5281f22dc5fc974079f7c9187" title="Given a path, extracts its directory name.">extractDirName</a>(filename), dirPermissions,
<a name="l00098"></a>00098 USER_NOT_GIVEN, gid);
<a name="l00099"></a>00099 } <span class="keywordflow">catch</span> (<span class="keyword">const</span> FileSystemException &e) {
<a name="l00100"></a>00100 commonContext.channel.write(<span class="stringliteral">"error"</span>, e.what(), NULL);
<a name="l00101"></a>00101 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="keywordflow">try</span> {
<a name="l00105"></a>00105 <a class="code" href="group__Support.html#g6f414070373465da2e12947463f69953" title="Create the given file with the given contents, permissions and ownership.">createFile</a>(groupDir + <span class="stringliteral">"/group_name.txt"</span>, groupName,
<a name="l00106"></a>00106 S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH,
<a name="l00107"></a>00107 USER_NOT_GIVEN, GROUP_NOT_GIVEN,
<a name="l00108"></a>00108 <span class="keyword">false</span>);
<a name="l00109"></a>00109 } <span class="keywordflow">catch</span> (<span class="keyword">const</span> FileSystemException &e) {
<a name="l00110"></a>00110 commonContext.channel.write(<span class="stringliteral">"error"</span>, e.what(), NULL);
<a name="l00111"></a>00111 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113
<a name="l00114"></a>00114 fd = syscalls::open(filename.c_str(),
<a name="l00115"></a>00115 O_CREAT | O_WRONLY | O_APPEND,
<a name="l00116"></a>00116 filePermissions);
<a name="l00117"></a>00117 <span class="keywordflow">if</span> (fd == -1) {
<a name="l00118"></a>00118 <span class="keyword">const</span> <span class="keywordtype">char</span> *message = strerror(errno);
<a name="l00119"></a>00119 commonContext.channel.write(<span class="stringliteral">"error"</span>, message, NULL);
<a name="l00120"></a>00120 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordflow">do</span> {
<a name="l00124"></a>00124 ret = fchmod(fd, filePermissions);
<a name="l00125"></a>00125 } <span class="keywordflow">while</span> (ret == -1 && errno == EINTR);
<a name="l00126"></a>00126 commonContext.channel.write(<span class="stringliteral">"ok"</span>, NULL);
<a name="l00127"></a>00127 commonContext.channel.writeFileDescriptor(fd);
<a name="l00128"></a>00128 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00129"></a>00129 } <span class="keywordflow">else</span> {
<a name="l00130"></a>00130 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 };
<a name="l00134"></a>00134
<a name="l00135"></a>00135 } <span class="comment">// namespace Passenger</span>
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="preprocessor">#endif </span><span class="comment">/* _PASSENGER_LOGGING_SERVER_H_ */</span>
</pre></div></div>
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