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<div class="title">kcrash.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * This file is part of the KDE Libraries</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2000 Timo Hummel <timo.hummel@sap.com></span>
<a name="l00004"></a>00004 <span class="comment"> * Tom Braun <braunt@fh-konstanz.de></span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the GNU Library General Public</span>
<a name="l00008"></a>00008 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00009"></a>00009 <span class="comment"> * version 2 of the License, or (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> * Library General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span>
<a name="l00018"></a>00018 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="l00019"></a>00019 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00020"></a>00020 <span class="comment"> */</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="comment">/*</span>
<a name="l00023"></a>00023 <span class="comment"> * This file is used to catch signals which would normally</span>
<a name="l00024"></a>00024 <span class="comment"> * crash the application (like segmentation fault, floating</span>
<a name="l00025"></a>00025 <span class="comment"> * point exception and such).</span>
<a name="l00026"></a>00026 <span class="comment"> */</span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include "config.h"</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#include <string.h></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <signal.h></span>
<a name="l00032"></a>00032 <span class="preprocessor">#include <stdio.h></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <unistd.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <time.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include "kcrash.h"</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00039"></a>00039 <span class="preprocessor">#include <sys/time.h></span>
<a name="l00040"></a>00040 <span class="preprocessor">#include <sys/resource.h></span>
<a name="l00041"></a>00041 <span class="preprocessor">#include <sys/wait.h></span>
<a name="l00042"></a>00042 <span class="preprocessor">#include <sys/un.h></span>
<a name="l00043"></a>00043 <span class="preprocessor">#include <sys/socket.h></span>
<a name="l00044"></a>00044 <span class="preprocessor">#include <errno.h></span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="preprocessor">#include <qwindowdefs.h></span>
<a name="l00047"></a>00047 <span class="preprocessor">#include <kglobal.h></span>
<a name="l00048"></a>00048 <span class="preprocessor">#include <kinstance.h></span>
<a name="l00049"></a>00049 <span class="preprocessor">#include <kaboutdata.h></span>
<a name="l00050"></a>00050 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00051"></a>00051 <span class="preprocessor">#include <kapplication.h></span>
<a name="l00052"></a>00052 <span class="preprocessor">#include <dcopclient.h></span>
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="preprocessor">#include <../kinit/klauncher_cmds.h></span>
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="preprocessor">#if defined Q_WS_X11</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#include <X11/Xlib.h></span>
<a name="l00058"></a>00058 <span class="preprocessor">#endif</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span>
<a name="l00060"></a>00060 <a class="code" href="classKCrash.html#a6967ef4a221423b896d2fd5a04a83e2e" title="This function type is a pointer to a crash handler function.">KCrash::HandlerType</a> <a class="code" href="classKCrash.html#a24314d51a6fa8ec7f9570044ce91aebf" title="Pointer to the emergency save function.">KCrash::_emergencySaveFunction</a> = 0;
<a name="l00061"></a>00061 <a class="code" href="classKCrash.html#a6967ef4a221423b896d2fd5a04a83e2e" title="This function type is a pointer to a crash handler function.">KCrash::HandlerType</a> <a class="code" href="classKCrash.html#aebfeffdfdbeabbe2d37cb23e6b83b969" title="Pointer to the crash handler.">KCrash::_crashHandler</a> = 0;
<a name="l00062"></a>00062 <span class="keyword">const</span> <span class="keywordtype">char</span> *KCrash::appName = 0;
<a name="l00063"></a>00063 <span class="keyword">const</span> <span class="keywordtype">char</span> *KCrash::appPath = 0;
<a name="l00064"></a>00064 <span class="keywordtype">bool</span> KCrash::safer = <span class="keyword">false</span>;
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">// This function sets the function which should be called when the</span>
<a name="l00067"></a>00067 <span class="comment">// application crashes and the</span>
<a name="l00068"></a>00068 <span class="comment">// application is asked to try to save its data.</span>
<a name="l00069"></a>00069 <span class="keywordtype">void</span>
<a name="l00070"></a><a class="code" href="classKCrash.html#a14f3b781a8d218204f1f99523b616b10">00070</a> <a class="code" href="classKCrash.html#a14f3b781a8d218204f1f99523b616b10" title="Installs a function which should try to save the applications data.">KCrash::setEmergencySaveFunction</a> (HandlerType saveFunction)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <a class="code" href="classKCrash.html#a24314d51a6fa8ec7f9570044ce91aebf" title="Pointer to the emergency save function.">_emergencySaveFunction</a> = saveFunction;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="comment">/*</span>
<a name="l00075"></a>00075 <span class="comment"> * We need at least the default crash handler for</span>
<a name="l00076"></a>00076 <span class="comment"> * emergencySaveFunction to be called</span>
<a name="l00077"></a>00077 <span class="comment"> */</span>
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (<a class="code" href="classKCrash.html#a24314d51a6fa8ec7f9570044ce91aebf" title="Pointer to the emergency save function.">_emergencySaveFunction</a> && !<a class="code" href="classKCrash.html#aebfeffdfdbeabbe2d37cb23e6b83b969" title="Pointer to the crash handler.">_crashHandler</a>)
<a name="l00079"></a>00079 <a class="code" href="classKCrash.html#aebfeffdfdbeabbe2d37cb23e6b83b969" title="Pointer to the crash handler.">_crashHandler</a> = <a class="code" href="classKCrash.html#a1858e03d7b38ca03f575265b1010fed8" title="The default crash handler.">defaultCrashHandler</a>;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="comment">// This function sets the function which should be responsible for</span>
<a name="l00084"></a>00084 <span class="comment">// the application crash handling.</span>
<a name="l00085"></a>00085 <span class="keywordtype">void</span>
<a name="l00086"></a><a class="code" href="classKCrash.html#a060bea066fee2e0fe824e70ed1dbdd8e">00086</a> <a class="code" href="classKCrash.html#a060bea066fee2e0fe824e70ed1dbdd8e" title="Install a function to be called in case a SIGSEGV is caught.">KCrash::setCrashHandler</a> (HandlerType handler)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="preprocessor">#ifdef Q_OS_UNIX</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span> <span class="keywordflow">if</span> (!handler)
<a name="l00090"></a>00090 handler = SIG_DFL;
<a name="l00091"></a>00091
<a name="l00092"></a>00092 sigset_t mask;
<a name="l00093"></a>00093 sigemptyset(&mask);
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="preprocessor">#ifdef SIGSEGV</span>
<a name="l00096"></a>00096 <span class="preprocessor"></span> signal (SIGSEGV, handler);
<a name="l00097"></a>00097 sigaddset(&mask, SIGSEGV);
<a name="l00098"></a>00098 <span class="preprocessor">#endif</span>
<a name="l00099"></a>00099 <span class="preprocessor"></span><span class="preprocessor">#ifdef SIGFPE</span>
<a name="l00100"></a>00100 <span class="preprocessor"></span> signal (SIGFPE, handler);
<a name="l00101"></a>00101 sigaddset(&mask, SIGFPE);
<a name="l00102"></a>00102 <span class="preprocessor">#endif</span>
<a name="l00103"></a>00103 <span class="preprocessor"></span><span class="preprocessor">#ifdef SIGILL</span>
<a name="l00104"></a>00104 <span class="preprocessor"></span> signal (SIGILL, handler);
<a name="l00105"></a>00105 sigaddset(&mask, SIGILL);
<a name="l00106"></a>00106 <span class="preprocessor">#endif</span>
<a name="l00107"></a>00107 <span class="preprocessor"></span><span class="preprocessor">#ifdef SIGABRT</span>
<a name="l00108"></a>00108 <span class="preprocessor"></span> signal (SIGABRT, handler);
<a name="l00109"></a>00109 sigaddset(&mask, SIGABRT);
<a name="l00110"></a>00110 <span class="preprocessor">#endif</span>
<a name="l00111"></a>00111 <span class="preprocessor"></span>
<a name="l00112"></a>00112 sigprocmask(SIG_UNBLOCK, &mask, 0);
<a name="l00113"></a>00113 <span class="preprocessor">#endif //Q_OS_UNIX</span>
<a name="l00114"></a>00114 <span class="preprocessor"></span>
<a name="l00115"></a>00115 <a class="code" href="classKCrash.html#aebfeffdfdbeabbe2d37cb23e6b83b969" title="Pointer to the crash handler.">_crashHandler</a> = handler;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="keywordtype">void</span>
<a name="l00119"></a><a class="code" href="classKCrash.html#a1858e03d7b38ca03f575265b1010fed8">00119</a> <a class="code" href="classKCrash.html#a1858e03d7b38ca03f575265b1010fed8" title="The default crash handler.">KCrash::defaultCrashHandler</a> (<span class="keywordtype">int</span> sig)
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 <span class="preprocessor">#ifdef Q_OS_UNIX</span>
<a name="l00122"></a>00122 <span class="preprocessor"></span> <span class="comment">// WABA: Do NOT use kdDebug() in this function because it is much too risky!</span>
<a name="l00123"></a>00123 <span class="comment">// Handle possible recursions</span>
<a name="l00124"></a>00124 <span class="keyword">static</span> <span class="keywordtype">int</span> crashRecursionCounter = 0;
<a name="l00125"></a>00125 crashRecursionCounter++; <span class="comment">// Nothing before this, please !</span>
<a name="l00126"></a>00126
<a name="l00127"></a>00127 signal(SIGALRM, SIG_DFL);
<a name="l00128"></a>00128 alarm(3); <span class="comment">// Kill me... (in case we deadlock in malloc)</span>
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keywordflow">if</span> (crashRecursionCounter < 2) {
<a name="l00131"></a>00131 <span class="keywordflow">if</span> (<a class="code" href="classKCrash.html#a24314d51a6fa8ec7f9570044ce91aebf" title="Pointer to the emergency save function.">_emergencySaveFunction</a>) {
<a name="l00132"></a>00132 <a class="code" href="classKCrash.html#a24314d51a6fa8ec7f9570044ce91aebf" title="Pointer to the emergency save function.">_emergencySaveFunction</a> (sig);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 crashRecursionCounter++; <span class="comment">//</span>
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">// Close all remaining file descriptors except for stdin/stdout/stderr</span>
<a name="l00138"></a>00138 <span class="keyword">struct </span>rlimit rlp;
<a name="l00139"></a>00139 getrlimit(RLIMIT_NOFILE, &rlp);
<a name="l00140"></a>00140 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 3; i < (int)rlp.rlim_cur; i++)
<a name="l00141"></a>00141 close(i);
<a name="l00142"></a>00142
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="comment">// this code is leaking, but this should not hurt cause we will do a</span>
<a name="l00145"></a>00145 <span class="comment">// exec() afterwards. exec() is supposed to clean up.</span>
<a name="l00146"></a>00146 <span class="keywordflow">if</span> (crashRecursionCounter < 3)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (appName)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 <span class="preprocessor">#ifndef NDEBUG</span>
<a name="l00151"></a>00151 <span class="preprocessor"></span> fprintf(stderr, <span class="stringliteral">"KCrash: crashing... crashRecursionCounter = %d\n"</span>, crashRecursionCounter);
<a name="l00152"></a>00152 fprintf(stderr, <span class="stringliteral">"KCrash: Application Name = %s path = %s pid = %d\n"</span>, appName ? appName : <span class="stringliteral">"<unknown>"</span> , appPath ? appPath : <span class="stringliteral">"<unknown>"</span>, getpid());
<a name="l00153"></a>00153 <span class="preprocessor">#else</span>
<a name="l00154"></a>00154 <span class="preprocessor"></span> fprintf(stderr, <span class="stringliteral">"KCrash: Application '%s' crashing...\n"</span>, appName ? appName : <span class="stringliteral">"<unknown>"</span>);
<a name="l00155"></a>00155 <span class="preprocessor">#endif</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span>
<a name="l00157"></a>00157 <span class="keyword">const</span> <span class="keywordtype">char</span> * argv[24]; <span class="comment">// don't forget to update this</span>
<a name="l00158"></a>00158 <span class="keywordtype">int</span> i = 0;
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="comment">// argument 0 has to be drkonqi</span>
<a name="l00161"></a>00161 argv[i++] = <span class="stringliteral">"/usr/libexec/kde4/drkonqi"</span>;
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="preprocessor">#if defined Q_WS_X11</span>
<a name="l00164"></a>00164 <span class="preprocessor"></span> <span class="comment">// start up on the correct display</span>
<a name="l00165"></a>00165 argv[i++] = <span class="stringliteral">"-display"</span>;
<a name="l00166"></a>00166 <span class="keywordflow">if</span> ( qt_xdisplay() )
<a name="l00167"></a>00167 argv[i++] = XDisplayString(qt_xdisplay());
<a name="l00168"></a>00168 <span class="keywordflow">else</span>
<a name="l00169"></a>00169 argv[i++] = getenv(<span class="stringliteral">"DISPLAY"</span>);
<a name="l00170"></a>00170 <span class="preprocessor">#elif defined(Q_WS_QWS)</span>
<a name="l00171"></a>00171 <span class="preprocessor"></span> <span class="comment">// start up on the correct display</span>
<a name="l00172"></a>00172 argv[i++] = <span class="stringliteral">"-display"</span>;
<a name="l00173"></a>00173 argv[i++] = getenv(<span class="stringliteral">"QWS_DISPLAY"</span>);
<a name="l00174"></a>00174 <span class="preprocessor">#endif</span>
<a name="l00175"></a>00175 <span class="preprocessor"></span>
<a name="l00176"></a>00176 <span class="comment">// we have already tested this</span>
<a name="l00177"></a>00177 argv[i++] = <span class="stringliteral">"--appname"</span>;
<a name="l00178"></a>00178 argv[i++] = appName;
<a name="l00179"></a>00179 <span class="keywordflow">if</span> (KApplication::loadedByKdeinit)
<a name="l00180"></a>00180 argv[i++] = <span class="stringliteral">"--kdeinit"</span>;
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="comment">// only add apppath if it's not NULL</span>
<a name="l00183"></a>00183 <span class="keywordflow">if</span> (appPath) {
<a name="l00184"></a>00184 argv[i++] = <span class="stringliteral">"--apppath"</span>;
<a name="l00185"></a>00185 argv[i++] = appPath;
<a name="l00186"></a>00186 }
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="comment">// signal number -- will never be NULL</span>
<a name="l00189"></a>00189 <span class="keywordtype">char</span> sigtxt[ 10 ];
<a name="l00190"></a>00190 sprintf( sigtxt, <span class="stringliteral">"%d"</span>, sig );
<a name="l00191"></a>00191 argv[i++] = <span class="stringliteral">"--signal"</span>;
<a name="l00192"></a>00192 argv[i++] = sigtxt;
<a name="l00193"></a>00193
<a name="l00194"></a>00194 <span class="keywordtype">char</span> pidtxt[ 10 ];
<a name="l00195"></a>00195 sprintf( pidtxt, <span class="stringliteral">"%d"</span>, getpid());
<a name="l00196"></a>00196 argv[i++] = <span class="stringliteral">"--pid"</span>;
<a name="l00197"></a>00197 argv[i++] = pidtxt;
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <span class="keyword">const</span> <a class="code" href="classKInstance.html" title="Access to KDE global objects for use in shared libraries.">KInstance</a> *instance = KGlobal::_instance;
<a name="l00200"></a>00200 <span class="keyword">const</span> <a class="code" href="classKAboutData.html" title="This class is used to store information about a program.">KAboutData</a> *about = instance ? instance-><a class="code" href="classKInstance.html#ac7476b3c8300aac68b0e3a1bc10b1d69" title="Returns the about data of this instance Warning, can be 0L.">aboutData</a>() : 0;
<a name="l00201"></a>00201 <span class="keywordflow">if</span> (about) {
<a name="l00202"></a>00202 <span class="keywordflow">if</span> (about->internalVersion()) {
<a name="l00203"></a>00203 argv[i++] = <span class="stringliteral">"--appversion"</span>;
<a name="l00204"></a>00204 argv[i++] = about->internalVersion();
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <span class="keywordflow">if</span> (about->internalProgramName()) {
<a name="l00208"></a>00208 argv[i++] = <span class="stringliteral">"--programname"</span>;
<a name="l00209"></a>00209 argv[i++] = about->internalProgramName();
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211
<a name="l00212"></a>00212 <span class="keywordflow">if</span> (about->internalBugAddress()) {
<a name="l00213"></a>00213 argv[i++] = <span class="stringliteral">"--bugaddress"</span>;
<a name="l00214"></a>00214 argv[i++] = about->internalBugAddress();
<a name="l00215"></a>00215 }
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="keywordflow">if</span> ( kapp && !kapp->startupId().isNull()) {
<a name="l00219"></a>00219 argv[i++] = <span class="stringliteral">"--startupid"</span>;
<a name="l00220"></a>00220 argv[i++] = kapp->startupId().data();
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordflow">if</span> ( safer )
<a name="l00224"></a>00224 argv[i++] = <span class="stringliteral">"--safer"</span>;
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="comment">// NULL terminated list</span>
<a name="l00227"></a>00227 argv[i] = NULL;
<a name="l00228"></a>00228
<a name="l00229"></a>00229 startDrKonqi( argv, i );
<a name="l00230"></a>00230 _exit(253);
<a name="l00231"></a>00231
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233 <span class="keywordflow">else</span> {
<a name="l00234"></a>00234 fprintf(stderr, <span class="stringliteral">"Unknown appname\n"</span>);
<a name="l00235"></a>00235 }
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="keywordflow">if</span> (crashRecursionCounter < 4)
<a name="l00239"></a>00239 {
<a name="l00240"></a>00240 fprintf(stderr, <span class="stringliteral">"Unable to start Dr. Konqi\n"</span>);
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242 <span class="preprocessor">#endif //Q_OS_UNIX</span>
<a name="l00243"></a>00243 <span class="preprocessor"></span>
<a name="l00244"></a>00244 _exit(255);
<a name="l00245"></a>00245 }
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="preprocessor">#ifdef Q_OS_UNIX</span>
<a name="l00248"></a>00248 <span class="preprocessor"></span>
<a name="l00249"></a>00249 <span class="comment">// Since we can't fork() in the crashhandler, we cannot execute any external code</span>
<a name="l00250"></a>00250 <span class="comment">// (there can be functions registered to be performed before fork(), for example</span>
<a name="l00251"></a>00251 <span class="comment">// handling of malloc locking, which doesn't work when malloc crashes because of heap corruption).</span>
<a name="l00252"></a>00252
<a name="l00253"></a>00253 <span class="keyword">static</span> <span class="keywordtype">int</span> write_socket(<span class="keywordtype">int</span> sock, <span class="keywordtype">char</span> *buffer, <span class="keywordtype">int</span> len);
<a name="l00254"></a>00254 <span class="keyword">static</span> <span class="keywordtype">int</span> read_socket(<span class="keywordtype">int</span> sock, <span class="keywordtype">char</span> *buffer, <span class="keywordtype">int</span> len);
<a name="l00255"></a>00255 <span class="keyword">static</span> <span class="keywordtype">int</span> openSocket();
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordtype">void</span> KCrash::startDrKonqi( <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[], <span class="keywordtype">int</span> argc )
<a name="l00258"></a>00258 {
<a name="l00259"></a>00259 <span class="keywordtype">int</span> socket = openSocket();
<a name="l00260"></a>00260 <span class="keywordflow">if</span>( socket < -1 )
<a name="l00261"></a>00261 {
<a name="l00262"></a>00262 startDirectly( argv, argc );
<a name="l00263"></a>00263 <span class="keywordflow">return</span>;
<a name="l00264"></a>00264 }
<a name="l00265"></a>00265 klauncher_header header;
<a name="l00266"></a>00266 header.cmd = LAUNCHER_EXEC_NEW;
<a name="l00267"></a>00267 <span class="keyword">const</span> <span class="keywordtype">int</span> BUFSIZE = 8192; <span class="comment">// make sure this is big enough</span>
<a name="l00268"></a>00268 <span class="keywordtype">char</span> buffer[ BUFSIZE + 10 ];
<a name="l00269"></a>00269 <span class="keywordtype">int</span> pos = 0;
<a name="l00270"></a>00270 <span class="keywordtype">long</span> argcl = argc;
<a name="l00271"></a>00271 memcpy( buffer + pos, &argcl, <span class="keyword">sizeof</span>( argcl ));
<a name="l00272"></a>00272 pos += <span class="keyword">sizeof</span>( argcl );
<a name="l00273"></a>00273 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0;
<a name="l00274"></a>00274 i < argc;
<a name="l00275"></a>00275 ++i )
<a name="l00276"></a>00276 {
<a name="l00277"></a>00277 <span class="keywordtype">int</span> len = strlen( argv[ i ] ) + 1; <span class="comment">// include terminating \0</span>
<a name="l00278"></a>00278 <span class="keywordflow">if</span>( pos + len > BUFSIZE )
<a name="l00279"></a>00279 {
<a name="l00280"></a>00280 fprintf( stderr, <span class="stringliteral">"BUFSIZE in KCrash not big enough!\n"</span> );
<a name="l00281"></a>00281 startDirectly( argv, argc );
<a name="l00282"></a>00282 <span class="keywordflow">return</span>;
<a name="l00283"></a>00283 }
<a name="l00284"></a>00284 memcpy( buffer + pos, argv[ i ], len );
<a name="l00285"></a>00285 pos += len;
<a name="l00286"></a>00286 }
<a name="l00287"></a>00287 <span class="keywordtype">long</span> env = 0;
<a name="l00288"></a>00288 memcpy( buffer + pos, &env, <span class="keyword">sizeof</span>( env ));
<a name="l00289"></a>00289 pos += <span class="keyword">sizeof</span>( env );
<a name="l00290"></a>00290 <span class="keywordtype">long</span> avoid_loops = 0;
<a name="l00291"></a>00291 memcpy( buffer + pos, &avoid_loops, <span class="keyword">sizeof</span>( avoid_loops ));
<a name="l00292"></a>00292 pos += <span class="keyword">sizeof</span>( avoid_loops );
<a name="l00293"></a>00293 header.arg_length = pos;
<a name="l00294"></a>00294 write_socket(socket, (<span class="keywordtype">char</span> *) &header, <span class="keyword">sizeof</span>(header));
<a name="l00295"></a>00295 write_socket(socket, buffer, pos);
<a name="l00296"></a>00296 <span class="keywordflow">if</span>( read_socket( socket, (<span class="keywordtype">char</span> *) &header, <span class="keyword">sizeof</span>(header)) < 0
<a name="l00297"></a>00297 || header.cmd != LAUNCHER_OK )
<a name="l00298"></a>00298 {
<a name="l00299"></a>00299 startDirectly( argv, argc );
<a name="l00300"></a>00300 <span class="keywordflow">return</span>;
<a name="l00301"></a>00301 }
<a name="l00302"></a>00302 <span class="keywordtype">long</span> pid;
<a name="l00303"></a>00303 read_socket(socket, buffer, header.arg_length);
<a name="l00304"></a>00304 pid = *((<span class="keywordtype">long</span> *) buffer);
<a name="l00305"></a>00305
<a name="l00306"></a>00306 alarm(0); <span class="comment">// Seems we made it....</span>
<a name="l00307"></a>00307
<a name="l00308"></a>00308 <span class="keywordflow">for</span>(;;)
<a name="l00309"></a>00309 {
<a name="l00310"></a>00310 <span class="keywordflow">if</span>( kill( pid, 0 ) < 0 )
<a name="l00311"></a>00311 _exit(253);
<a name="l00312"></a>00312 sleep(1);
<a name="l00313"></a>00313 <span class="comment">// the debugger should stop this process anyway</span>
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315 }
<a name="l00316"></a>00316
<a name="l00317"></a>00317 <span class="comment">// If we can't reach kdeinit we can still at least try to fork()</span>
<a name="l00318"></a>00318 <span class="keywordtype">void</span> KCrash::startDirectly( <span class="keyword">const</span> <span class="keywordtype">char</span>* argv[], <span class="keywordtype">int</span> )
<a name="l00319"></a>00319 {
<a name="l00320"></a>00320 fprintf( stderr, <span class="stringliteral">"KCrash cannot reach kdeinit, launching directly.\n"</span> );
<a name="l00321"></a>00321 pid_t pid = fork();
<a name="l00322"></a>00322 <span class="keywordflow">if</span> (pid <= 0)
<a name="l00323"></a>00323 {
<a name="l00324"></a>00324 <span class="keywordflow">if</span>(!geteuid() && setgid(getgid()) < 0)
<a name="l00325"></a>00325 _exit(253);
<a name="l00326"></a>00326 <span class="keywordflow">if</span>(!geteuid() && setuid(getuid()) < 0)
<a name="l00327"></a>00327 _exit(253);
<a name="l00328"></a>00328 execv(<span class="stringliteral">"/usr/libexec/kde4/drkonqi"</span>, const_cast< char** >( argv ));
<a name="l00329"></a>00329 _exit(errno);
<a name="l00330"></a>00330 }
<a name="l00331"></a>00331 <span class="keywordflow">else</span>
<a name="l00332"></a>00332 {
<a name="l00333"></a>00333 alarm(0); <span class="comment">// Seems we made it....</span>
<a name="l00334"></a>00334 <span class="comment">// wait for child to exit</span>
<a name="l00335"></a>00335 waitpid(pid, NULL, 0);
<a name="l00336"></a>00336 _exit(253);
<a name="l00337"></a>00337 }
<a name="l00338"></a>00338 }
<a name="l00339"></a>00339
<a name="l00340"></a>00340 <span class="comment">// From now on this code is copy&pasted from kinit/wrapper.c :</span>
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="keyword">extern</span> <span class="keywordtype">char</span> **environ;
<a name="l00343"></a>00343
<a name="l00344"></a>00344 <span class="keyword">static</span> <span class="keywordtype">char</span> *getDisplay()
<a name="l00345"></a>00345 {
<a name="l00346"></a>00346 <span class="keyword">const</span> <span class="keywordtype">char</span> *display;
<a name="l00347"></a>00347 <span class="keywordtype">char</span> *result;
<a name="l00348"></a>00348 <span class="keywordtype">char</span> *screen;
<a name="l00349"></a>00349 <span class="keywordtype">char</span> *colon;
<a name="l00350"></a>00350 <span class="keywordtype">char</span> *i;
<a name="l00351"></a>00351 <span class="comment">/*</span>
<a name="l00352"></a>00352 <span class="comment"> don't test for a value from qglobal.h but instead distinguish</span>
<a name="l00353"></a>00353 <span class="comment"> Qt/X11 from Qt/Embedded by the fact that Qt/E apps have -DQWS</span>
<a name="l00354"></a>00354 <span class="comment"> on the commandline (which in qglobal.h however triggers Q_WS_QWS,</span>
<a name="l00355"></a>00355 <span class="comment"> but we don't want to include that here) (Simon)</span>
<a name="l00356"></a>00356 <span class="comment">#ifdef Q_WS_X11</span>
<a name="l00357"></a>00357 <span class="comment"> */</span>
<a name="l00358"></a>00358 <span class="preprocessor">#if !defined(QWS)</span>
<a name="l00359"></a>00359 <span class="preprocessor"></span> display = getenv(<span class="stringliteral">"DISPLAY"</span>);
<a name="l00360"></a>00360 <span class="preprocessor">#else</span>
<a name="l00361"></a>00361 <span class="preprocessor"></span> display = getenv(<span class="stringliteral">"QWS_DISPLAY"</span>);
<a name="l00362"></a>00362 <span class="preprocessor">#endif</span>
<a name="l00363"></a>00363 <span class="preprocessor"></span> <span class="keywordflow">if</span> (!display || !*display)
<a name="l00364"></a>00364 {
<a name="l00365"></a>00365 display = <span class="stringliteral">":0"</span>;
<a name="l00366"></a>00366 }
<a name="l00367"></a>00367 result = (<span class="keywordtype">char</span>*)malloc(strlen(display)+1);
<a name="l00368"></a>00368 <span class="keywordflow">if</span> (result == NULL)
<a name="l00369"></a>00369 <span class="keywordflow">return</span> NULL;
<a name="l00370"></a>00370
<a name="l00371"></a>00371 strcpy(result, display);
<a name="l00372"></a>00372 screen = strrchr(result, <span class="charliteral">'.'</span>);
<a name="l00373"></a>00373 colon = strrchr(result, <span class="charliteral">':'</span>);
<a name="l00374"></a>00374 <span class="keywordflow">if</span> (screen && (screen > colon))
<a name="l00375"></a>00375 *screen = <span class="charliteral">'\0'</span>;
<a name="l00376"></a>00376 <span class="keywordflow">while</span>((i = strchr(result, <span class="charliteral">':'</span>)))
<a name="l00377"></a>00377 *i = <span class="charliteral">'_'</span>;
<a name="l00378"></a>00378 <span class="keywordflow">return</span> result;
<a name="l00379"></a>00379 }
<a name="l00380"></a>00380
<a name="l00381"></a>00381 <span class="comment">/*</span>
<a name="l00382"></a>00382 <span class="comment"> * Write 'len' bytes from 'buffer' into 'sock'.</span>
<a name="l00383"></a>00383 <span class="comment"> * returns 0 on success, -1 on failure.</span>
<a name="l00384"></a>00384 <span class="comment"> */</span>
<a name="l00385"></a>00385 <span class="keyword">static</span> <span class="keywordtype">int</span> write_socket(<span class="keywordtype">int</span> sock, <span class="keywordtype">char</span> *buffer, <span class="keywordtype">int</span> len)
<a name="l00386"></a>00386 {
<a name="l00387"></a>00387 ssize_t result;
<a name="l00388"></a>00388 <span class="keywordtype">int</span> bytes_left = len;
<a name="l00389"></a>00389 <span class="keywordflow">while</span> ( bytes_left > 0)
<a name="l00390"></a>00390 {
<a name="l00391"></a>00391 result = write(sock, buffer, bytes_left);
<a name="l00392"></a>00392 <span class="keywordflow">if</span> (result > 0)
<a name="l00393"></a>00393 {
<a name="l00394"></a>00394 buffer += result;
<a name="l00395"></a>00395 bytes_left -= result;
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (result == 0)
<a name="l00398"></a>00398 <span class="keywordflow">return</span> -1;
<a name="l00399"></a>00399 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((result == -1) && (errno != EINTR) && (errno != EAGAIN))
<a name="l00400"></a>00400 <span class="keywordflow">return</span> -1;
<a name="l00401"></a>00401 }
<a name="l00402"></a>00402 <span class="keywordflow">return</span> 0;
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404
<a name="l00405"></a>00405 <span class="comment">/*</span>
<a name="l00406"></a>00406 <span class="comment"> * Read 'len' bytes from 'sock' into 'buffer'.</span>
<a name="l00407"></a>00407 <span class="comment"> * returns 0 on success, -1 on failure.</span>
<a name="l00408"></a>00408 <span class="comment"> */</span>
<a name="l00409"></a>00409 <span class="keyword">static</span> <span class="keywordtype">int</span> read_socket(<span class="keywordtype">int</span> sock, <span class="keywordtype">char</span> *buffer, <span class="keywordtype">int</span> len)
<a name="l00410"></a>00410 {
<a name="l00411"></a>00411 ssize_t result;
<a name="l00412"></a>00412 <span class="keywordtype">int</span> bytes_left = len;
<a name="l00413"></a>00413 <span class="keywordflow">while</span> ( bytes_left > 0)
<a name="l00414"></a>00414 {
<a name="l00415"></a>00415 result = read(sock, buffer, bytes_left);
<a name="l00416"></a>00416 <span class="keywordflow">if</span> (result > 0)
<a name="l00417"></a>00417 {
<a name="l00418"></a>00418 buffer += result;
<a name="l00419"></a>00419 bytes_left -= result;
<a name="l00420"></a>00420 }
<a name="l00421"></a>00421 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (result == 0)
<a name="l00422"></a>00422 <span class="keywordflow">return</span> -1;
<a name="l00423"></a>00423 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((result == -1) && (errno != EINTR) && (errno != EAGAIN))
<a name="l00424"></a>00424 <span class="keywordflow">return</span> -1;
<a name="l00425"></a>00425 }
<a name="l00426"></a>00426 <span class="keywordflow">return</span> 0;
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428
<a name="l00429"></a>00429 <span class="keyword">static</span> <span class="keywordtype">int</span> openSocket()
<a name="l00430"></a>00430 {
<a name="l00431"></a>00431 kde_socklen_t socklen;
<a name="l00432"></a>00432 <span class="keywordtype">int</span> s;
<a name="l00433"></a>00433 <span class="keyword">struct </span>sockaddr_un server;
<a name="l00434"></a>00434 <span class="preprocessor">#define MAX_SOCK_FILE 255</span>
<a name="l00435"></a>00435 <span class="preprocessor"></span> <span class="keywordtype">char</span> sock_file[MAX_SOCK_FILE + 1];
<a name="l00436"></a>00436 <span class="keyword">const</span> <span class="keywordtype">char</span> *home_dir = getenv(<span class="stringliteral">"HOME"</span>);
<a name="l00437"></a>00437 <span class="keyword">const</span> <span class="keywordtype">char</span> *kde_home = getenv(<span class="stringliteral">"KDEHOME"</span>);
<a name="l00438"></a>00438 <span class="keywordtype">char</span> *display;
<a name="l00439"></a>00439
<a name="l00440"></a>00440 sock_file[0] = sock_file[MAX_SOCK_FILE] = 0;
<a name="l00441"></a>00441
<a name="l00442"></a>00442 <span class="keywordflow">if</span> (!kde_home || !kde_home[0])
<a name="l00443"></a>00443 {
<a name="l00444"></a>00444 kde_home = <span class="stringliteral">"~/.kde/"</span>;
<a name="l00445"></a>00445 }
<a name="l00446"></a>00446
<a name="l00447"></a>00447 <span class="keywordflow">if</span> (kde_home[0] == <span class="charliteral">'~'</span>)
<a name="l00448"></a>00448 {
<a name="l00449"></a>00449 <span class="keywordflow">if</span> (!home_dir || !home_dir[0])
<a name="l00450"></a>00450 {
<a name="l00451"></a>00451 fprintf(stderr, <span class="stringliteral">"Warning: $HOME not set!\n"</span>);
<a name="l00452"></a>00452 <span class="keywordflow">return</span> -1;
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454 <span class="keywordflow">if</span> (strlen(home_dir) > (MAX_SOCK_FILE-100))
<a name="l00455"></a>00455 {
<a name="l00456"></a>00456 fprintf(stderr, <span class="stringliteral">"Warning: Home directory path too long!\n"</span>);
<a name="l00457"></a>00457 <span class="keywordflow">return</span> -1;
<a name="l00458"></a>00458 }
<a name="l00459"></a>00459 kde_home++;
<a name="l00460"></a>00460 strncpy(sock_file, home_dir, MAX_SOCK_FILE);
<a name="l00461"></a>00461 }
<a name="l00462"></a>00462 strncat(sock_file, kde_home, MAX_SOCK_FILE - strlen(sock_file));
<a name="l00463"></a>00463
<a name="l00465"></a>00465 <span class="keywordflow">if</span> ( sock_file[strlen(sock_file)-1] == <span class="charliteral">'/'</span>)
<a name="l00466"></a>00466 sock_file[strlen(sock_file)-1] = 0;
<a name="l00467"></a>00467
<a name="l00468"></a>00468 strncat(sock_file, <span class="stringliteral">"/socket-"</span>, MAX_SOCK_FILE - strlen(sock_file));
<a name="l00469"></a>00469 <span class="keywordflow">if</span> (gethostname(sock_file+strlen(sock_file), MAX_SOCK_FILE - strlen(sock_file) - 1) != 0)
<a name="l00470"></a>00470 {
<a name="l00471"></a>00471 perror(<span class="stringliteral">"Warning: Could not determine hostname: "</span>);
<a name="l00472"></a>00472 <span class="keywordflow">return</span> -1;
<a name="l00473"></a>00473 }
<a name="l00474"></a>00474 sock_file[<span class="keyword">sizeof</span>(sock_file)-1] = <span class="charliteral">'\0'</span>;
<a name="l00475"></a>00475
<a name="l00476"></a>00476 <span class="comment">/* append $DISPLAY */</span>
<a name="l00477"></a>00477 display = getDisplay();
<a name="l00478"></a>00478 <span class="keywordflow">if</span> (display == NULL)
<a name="l00479"></a>00479 {
<a name="l00480"></a>00480 fprintf(stderr, <span class="stringliteral">"Error: Could not determine display.\n"</span>);
<a name="l00481"></a>00481 <span class="keywordflow">return</span> -1;
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483
<a name="l00484"></a>00484 <span class="keywordflow">if</span> (strlen(sock_file)+strlen(display)+strlen(<span class="stringliteral">"/kdeinit_"</span>)+2 > MAX_SOCK_FILE)
<a name="l00485"></a>00485 {
<a name="l00486"></a>00486 fprintf(stderr, <span class="stringliteral">"Warning: Socket name will be too long.\n"</span>);
<a name="l00487"></a>00487 free(display);
<a name="l00488"></a>00488 <span class="keywordflow">return</span> -1;
<a name="l00489"></a>00489 }
<a name="l00490"></a>00490 strcat(sock_file, <span class="stringliteral">"/kdeinit_"</span>);
<a name="l00491"></a>00491 strcat(sock_file, display);
<a name="l00492"></a>00492 free(display);
<a name="l00493"></a>00493
<a name="l00494"></a>00494 <span class="keywordflow">if</span> (strlen(sock_file) >= <span class="keyword">sizeof</span>(server.sun_path))
<a name="l00495"></a>00495 {
<a name="l00496"></a>00496 fprintf(stderr, <span class="stringliteral">"Warning: Path of socketfile exceeds UNIX_PATH_MAX.\n"</span>);
<a name="l00497"></a>00497 <span class="keywordflow">return</span> -1;
<a name="l00498"></a>00498 }
<a name="l00499"></a>00499
<a name="l00500"></a>00500 <span class="comment">/*</span>
<a name="l00501"></a>00501 <span class="comment"> * create the socket stream</span>
<a name="l00502"></a>00502 <span class="comment"> */</span>
<a name="l00503"></a>00503 s = socket(PF_UNIX, SOCK_STREAM, 0);
<a name="l00504"></a>00504 <span class="keywordflow">if</span> (s < 0)
<a name="l00505"></a>00505 {
<a name="l00506"></a>00506 perror(<span class="stringliteral">"Warning: socket() failed: "</span>);
<a name="l00507"></a>00507 <span class="keywordflow">return</span> -1;
<a name="l00508"></a>00508 }
<a name="l00509"></a>00509
<a name="l00510"></a>00510 server.sun_family = AF_UNIX;
<a name="l00511"></a>00511 strcpy(server.sun_path, sock_file);
<a name="l00512"></a>00512 socklen = <span class="keyword">sizeof</span>(server);
<a name="l00513"></a>00513 <span class="keywordflow">if</span>(connect(s, (<span class="keyword">struct</span> sockaddr *)&server, socklen) == -1)
<a name="l00514"></a>00514 {
<a name="l00515"></a>00515 perror(<span class="stringliteral">"Warning: connect() failed: "</span>);
<a name="l00516"></a>00516 <a class="codeRef" doxygen="kdeui.tag:../../kdeui/html/" href="../../kdeui/html/namespaceKStdAction.html#a7bca70f9083fd9814cdd0430f9b054e7">close</a>(s);
<a name="l00517"></a>00517 <span class="keywordflow">return</span> -1;
<a name="l00518"></a>00518 }
<a name="l00519"></a>00519 <span class="keywordflow">return</span> s;
<a name="l00520"></a>00520 }
<a name="l00521"></a>00521
<a name="l00522"></a>00522 <span class="preprocessor">#endif // Q_OS_UNIX</span>
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