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/*
DebugDump.cpp
Copyright (C) 2009 Zdenek Prikryl (zprikryl@redhat.com)
Copyright (C) 2009 RedHat inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "CCpp.h"
#include <fstream>
#include <ctype.h>
#include "DebugDump.h"
#include <sstream>
#include <iostream>
#include <hash_map>
#define CORE_PATTERN_IFACE "/proc/sys/kernel/core_pattern"
#define CORE_PATTERN "|"CCPP_HOOK_PATH" %p %s"
#define DEBUGINFO_COMMAND "debuginfo-install -y "
#define GDB_COMMAND "gdb -batch -x "
CLanguageCCpp::CLanguageCCpp() :
m_bMemoryMap(false)
{}
void CLanguageCCpp::InstallDebugInfos(const std::string& pPackage)
{
char line[1024];
std::string command = DEBUGINFO_COMMAND + pPackage;
std::string packageName = pPackage.substr(0, pPackage.rfind("-", pPackage.rfind("-") - 1));
std::string packageERV = pPackage.substr(packageName.length());
std::string packageDebuginfo = packageName+"-debuginfo"+packageERV;
std::string installed = "already installed and latest version";
std::string canNotInstall = "No debuginfo packages available to install";
FILE *fp = popen(command.c_str(), "r");
if (fp == NULL)
{
throw "CLanguageCCpp::InstallDebugInfos(): cannot execute " + command ;
}
while (fgets(line, sizeof(line), fp))
{
std::string text = line;
std::cout << text;
if (text.find(packageDebuginfo) != std::string::npos &&
text.find(installed) != std::string::npos)
{
pclose(fp);
return;
}
if (text.find(canNotInstall) != std::string::npos)
{
pclose(fp);
throw "CLanguageCCpp::InstallDebugInfos(): cannot install debuginfos for " + pPackage + " (" + canNotInstall + ")" ;
}
}
if (pclose(fp) != 0)
{
throw "CLanguageCCpp::InstallDebugInfos(): cannot install debuginfos for " + pPackage ;
}
}
void CLanguageCCpp::GetBacktrace(const std::string& pDebugDumpDir, std::string& pBacktrace)
{
std::string tmpFile = "/tmp/" + pDebugDumpDir.substr(pDebugDumpDir.rfind("/"));
std::ofstream fTmp;
fTmp.open(tmpFile.c_str());
if (fTmp.is_open())
{
std::string executable;
CDebugDump dd;
dd.Open(pDebugDumpDir);
dd.LoadText(FILENAME_EXECUTABLE, executable);
dd.Close();
fTmp << "file " << executable << std::endl;
fTmp << "core " << pDebugDumpDir << "/" << FILENAME_BINARYDATA1 << std::endl;
fTmp << "bt" << std::endl;
fTmp << "q" << std::endl;
fTmp.close();
}
else
{
throw "CLanguageCCpp::GetBacktrace(): cannot create gdb script " + tmpFile ;
}
std::string command = GDB_COMMAND + tmpFile;
RunCommand(command, pBacktrace);
}
void CLanguageCCpp::GetIndependentBacktrace(const std::string& pBacktrace, std::string& pIndependentBacktrace)
{
int ii = 0;
while (ii < pBacktrace.length())
{
std::string line = "";
int jj = 0;
while (pBacktrace[ii] != '\n' && ii < pBacktrace.length())
{
line += pBacktrace[ii];
ii++;
}
while (isspace(line[jj]))
{
jj++;
}
if (line[jj] == '#')
{
while(jj < line.length())
{
if (isspace(line[jj]))
{
jj++;
}
else if (line[jj] == '0' && line[jj+1] == 'x')
{
while (isalnum(line[jj]))
{
jj++;
}
}
else
{
pIndependentBacktrace += line[jj];
jj++;
}
}
}
ii++;
}
}
void CLanguageCCpp::RunCommand(const std::string& pCommand, std::string& pOutput)
{
char line[1024];
std::string output;
FILE *fp = popen(pCommand.c_str(), "r");
if (fp == NULL)
{
throw "CLanguageCCpp::GetBacktrace(): cannot execute " + pCommand ;
}
pOutput = "";
while (fgets(line, 1024, fp) != NULL)
{
output += line;
}
pOutput = output;
pclose(fp);
}
std::string CLanguageCCpp::GetLocalUUID(const std::string& pDebugDumpDir)
{
std::stringstream ss;
char* core;
unsigned int size;
std::string executable;
CDebugDump dd;
dd.Open(pDebugDumpDir);
dd.LoadBinary(FILENAME_BINARYDATA1, &core, &size);
dd.LoadText(FILENAME_EXECUTABLE, executable);
dd.Close();
// TODO: compute local UUID, remove this hack
ss << executable << "_" << size;
return ss.str();
}
std::string CLanguageCCpp::GetGlobalUUID(const std::string& pDebugDumpDir)
{
std::stringstream ss;
std::string backtrace;
std::string independentBacktrace;
__gnu_cxx::hash<const char*> hash;
CDebugDump dd;
dd.Open(pDebugDumpDir);
dd.LoadText(FILENAME_TEXTDATA1, backtrace);
dd.Close();
GetIndependentBacktrace(backtrace, independentBacktrace);
// TODO: compute global UUID, remove this hack
ss << hash(independentBacktrace.c_str());
return ss.str();
}
void CLanguageCCpp::CreateReport(const std::string& pDebugDumpDir)
{
std::string package;
std::string backtrace;
CDebugDump dd;
dd.Open(pDebugDumpDir);
if (dd.Exist(FILENAME_TEXTDATA1))
{
dd.Close();
return;
}
dd.LoadText(FILENAME_PACKAGE, package);
InstallDebugInfos(package);
GetBacktrace(pDebugDumpDir, backtrace);
dd.SaveText(FILENAME_TEXTDATA1, backtrace);
if (m_bMemoryMap)
{
dd.SaveText(FILENAME_TEXTDATA2, "memory map of the crashed C/C++ application, not implemented yet");
}
dd.Close();
}
void CLanguageCCpp::Init()
{
std::ifstream fInCorePattern;
fInCorePattern.open(CORE_PATTERN_IFACE);
if (fInCorePattern.is_open())
{
getline(fInCorePattern, m_sOldCorePattern);
fInCorePattern.close();
}
std::ofstream fOutCorePattern;
fOutCorePattern.open(CORE_PATTERN_IFACE);
if (fOutCorePattern.is_open())
{
fOutCorePattern << CORE_PATTERN << std::endl;
fOutCorePattern.close();
}
}
void CLanguageCCpp::DeInit()
{
std::ofstream fOutCorePattern;
fOutCorePattern.open(CORE_PATTERN_IFACE);
if (fOutCorePattern.is_open())
{
fOutCorePattern << m_sOldCorePattern << std::endl;
fOutCorePattern.close();
}
}
void CLanguageCCpp::SetSettings(const map_settings_t& pSettings)
{
if (pSettings.find("MemoryMap")!= pSettings.end())
{
m_bMemoryMap = pSettings.find("MemoryMap")->second == "yes";
}
}
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