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BUG#: 7303
TITLE: Resource leak in PidFile::getPid()
DESCRIPTION: Close the file handle in an error case.

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#include <Pegasus/Common/System.h>
#include <Pegasus/Common/Logger.h>
#include <Pegasus/Common/FileSystem.h>
#include <Service/PidFile.h>

PEGASUS_NAMESPACE_BEGIN

PidFile::PidFile(const char* pidFilePath)
    : _pidFilePath(pidFilePath)
{
}

PidFile::~PidFile()
{
}

unsigned long PidFile::getPid()
{
    FILE* pidFile;
    unsigned long pid = 0;

    // open the PID file
    pidFile = fopen(_pidFilePath, "r");
    if (!pidFile)
    {
        return 0;
    }

    // get the pid from the file
    if (fscanf(pidFile, "%lu\n", &pid) != 1)
    {
        fclose(pidFile);
        return 0;
    }

    fclose(pidFile);

    return pid;
}

void PidFile::setPid(unsigned long pid)
{
    // Remove the old file if it exists
    remove();

    // Open the file
    FILE *pidFile = fopen(_pidFilePath, "w");

    if (pidFile)
    {
        // Save the pid in the file
        fprintf(pidFile, "%lu\n", (unsigned long)pid);
        fclose(pidFile);
    }
}

void PidFile::remove()
{
    System::removeFile(_pidFilePath);
}

PEGASUS_NAMESPACE_END