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<?php

/**

 * The OS_Guess class

 *

 * PHP versions 4 and 5

 *

 * @category   pear

 * @package    PEAR

 * @author     Stig Bakken <ssb@php.net>

 * @author     Gregory Beaver <cellog@php.net>

 * @copyright  1997-2009 The Authors

 * @license    http://opensource.org/licenses/bsd-license.php New BSD License

 * @link       http://pear.php.net/package/PEAR

 * @since      File available since PEAR 0.1

 */

// {{{ uname examples

// php_uname() without args returns the same as 'uname -a', or a PHP-custom

// string for Windows.

// PHP versions prior to 4.3 return the uname of the host where PHP was built,

// as of 4.3 it returns the uname of the host running the PHP code.

//

// PC RedHat Linux 7.1:

// Linux host.example.com 2.4.2-2 #1 Sun Apr 8 20:41:30 EDT 2001 i686 unknown

//

// PC Debian Potato:

// Linux host 2.4.17 #2 SMP Tue Feb 12 15:10:04 CET 2002 i686 unknown

//

// PC FreeBSD 3.3:

// FreeBSD host.example.com 3.3-STABLE FreeBSD 3.3-STABLE #0: Mon Feb 21 00:42:31 CET 2000     root@example.com:/usr/src/sys/compile/CONFIG  i386

//

// PC FreeBSD 4.3:

// FreeBSD host.example.com 4.3-RELEASE FreeBSD 4.3-RELEASE #1: Mon Jun 25 11:19:43 EDT 2001     root@example.com:/usr/src/sys/compile/CONFIG  i386

//

// PC FreeBSD 4.5:

// FreeBSD host.example.com 4.5-STABLE FreeBSD 4.5-STABLE #0: Wed Feb  6 23:59:23 CET 2002     root@example.com:/usr/src/sys/compile/CONFIG  i386

//

// PC FreeBSD 4.5 w/uname from GNU shellutils:

// FreeBSD host.example.com 4.5-STABLE FreeBSD 4.5-STABLE #0: Wed Feb  i386 unknown

//

// HP 9000/712 HP-UX 10:

// HP-UX iq B.10.10 A 9000/712 2008429113 two-user license

//

// HP 9000/712 HP-UX 10 w/uname from GNU shellutils:

// HP-UX host B.10.10 A 9000/712 unknown

//

// IBM RS6000/550 AIX 4.3:

// AIX host 3 4 000003531C00

//

// AIX 4.3 w/uname from GNU shellutils:

// AIX host 3 4 000003531C00 unknown

//

// SGI Onyx IRIX 6.5 w/uname from GNU shellutils:

// IRIX64 host 6.5 01091820 IP19 mips

//

// SGI Onyx IRIX 6.5:

// IRIX64 host 6.5 01091820 IP19

//

// SparcStation 20 Solaris 8 w/uname from GNU shellutils:

// SunOS host.example.com 5.8 Generic_108528-12 sun4m sparc

//

// SparcStation 20 Solaris 8:

// SunOS host.example.com 5.8 Generic_108528-12 sun4m sparc SUNW,SPARCstation-20

//

// Mac OS X (Darwin)

// Darwin home-eden.local 7.5.0 Darwin Kernel Version 7.5.0: Thu Aug  5 19:26:16 PDT 2004; root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC  Power Macintosh

//

// Mac OS X early versions

//

// }}}

/* TODO:

 * - define endianness, to allow matchSignature("bigend") etc.

 */

/**

 * Retrieves information about the current operating system

 *

 * This class uses php_uname() to grok information about the current OS

 *

 * @category   pear

 * @package    PEAR

 * @author     Stig Bakken <ssb@php.net>

 * @author     Gregory Beaver <cellog@php.net>

 * @copyright  1997-2009 The Authors

 * @license    http://opensource.org/licenses/bsd-license.php New BSD License

 * @version    Release: 1.10.1

 * @link       http://pear.php.net/package/PEAR

 * @since      Class available since Release 0.1

 */

class OS_Guess

{

    var $sysname;

    var $nodename;

    var $cpu;

    var $release;

    var $extra;

    function __construct($uname = null)

    {

        list($this->sysname,

             $this->release,

             $this->cpu,

             $this->extra,

             $this->nodename) = $this->parseSignature($uname);

    }

    function parseSignature($uname = null)

    {

        static $sysmap = array(

            'HP-UX' => 'hpux',

            'IRIX64' => 'irix',

        );

        static $cpumap = array(

            'i586' => 'i386',

            'i686' => 'i386',

            'ppc' => 'powerpc',

        );

        if ($uname === null) {

            $uname = php_uname();

        }

        $parts = preg_split('/\s+/', trim($uname));

        $n = count($parts);

        $release  = $machine = $cpu = '';

        $sysname  = $parts[0];

        $nodename = $parts[1];

        $cpu      = $parts[$n-1];

        $extra = '';

        if ($cpu == 'unknown') {

            $cpu = $parts[$n - 2];

        }

        switch ($sysname) {

            case 'AIX' :

                $release = "$parts[3].$parts[2]";

                break;

            case 'Windows' :

                switch ($parts[1]) {

                    case '95/98':

                        $release = '9x';

                        break;

                    default:

                        $release = $parts[1];

                        break;

                }

                $cpu = 'i386';

                break;

            case 'Linux' :

                $extra = $this->_detectGlibcVersion();

                // use only the first two digits from the kernel version

                $release = preg_replace('/^([0-9]+\.[0-9]+).*/', '\1', $parts[2]);

                break;

            case 'Mac' :

                $sysname = 'darwin';

                $nodename = $parts[2];

                $release = $parts[3];

                if ($cpu == 'Macintosh') {

                    if ($parts[$n - 2] == 'Power') {

                        $cpu = 'powerpc';

                    }

                }

                break;

            case 'Darwin' :

                if ($cpu == 'Macintosh') {

                    if ($parts[$n - 2] == 'Power') {

                        $cpu = 'powerpc';

                    }

                }

                $release = preg_replace('/^([0-9]+\.[0-9]+).*/', '\1', $parts[2]);

                break;

            default:

                $release = preg_replace('/-.*/', '', $parts[2]);

                break;

        }

        if (isset($sysmap[$sysname])) {

            $sysname = $sysmap[$sysname];

        } else {

            $sysname = strtolower($sysname);

        }

        if (isset($cpumap[$cpu])) {

            $cpu = $cpumap[$cpu];

        }

        return array($sysname, $release, $cpu, $extra, $nodename);

    }

    function _detectGlibcVersion()

    {

        static $glibc = false;

        if ($glibc !== false) {

            return $glibc; // no need to run this multiple times

        }

        $major = $minor = 0;

        include_once "System.php";

        // Use glibc's <features.h> header file to

        // get major and minor version number:

        if (@file_exists('/usr/include/features.h') &&

              @is_readable('/usr/include/features.h')) {

            if (!@file_exists('/usr/bin/cpp') || !@is_executable('/usr/bin/cpp')) {

                $features_file = fopen('/usr/include/features.h', 'rb');

                while (!feof($features_file)) {

                    $line = fgets($features_file, 8192);

                    if (!$line || (strpos($line, '#define') === false)) {

                        continue;

                    }

                    if (strpos($line, '__GLIBC__')) {

                        // major version number #define __GLIBC__ version

                        $line = preg_split('/\s+/', $line);

                        $glibc_major = trim($line[2]);

                        if (isset($glibc_minor)) {

                            break;

                        }

                        continue;

                    }

                    if (strpos($line, '__GLIBC_MINOR__'))  {

                        // got the minor version number

                        // #define __GLIBC_MINOR__ version

                        $line = preg_split('/\s+/', $line);

                        $glibc_minor = trim($line[2]);

                        if (isset($glibc_major)) {

                            break;

                        }

                        continue;

                    }

                }

                fclose($features_file);

                if (!isset($glibc_major) || !isset($glibc_minor)) {

                    return $glibc = '';

                }

                return $glibc = 'glibc' . trim($glibc_major) . "." . trim($glibc_minor) ;

            } // no cpp

            $tmpfile = System::mktemp("glibctest");

            $fp = fopen($tmpfile, "w");

            fwrite($fp, "#include <features.h>\n__GLIBC__ __GLIBC_MINOR__\n");

            fclose($fp);

            $cpp = popen("/usr/bin/cpp $tmpfile", "r");

            while ($line = fgets($cpp, 1024)) {

                if ($line{0} == '#' || trim($line) == '') {

                    continue;

                }

                if (list($major, $minor) = explode(' ', trim($line))) {

                    break;

                }

            }

            pclose($cpp);

            unlink($tmpfile);

        } // features.h

        if (!($major && $minor) && @is_link('/lib/libc.so.6')) {

            // Let's try reading the libc.so.6 symlink

            if (preg_match('/^libc-(.*)\.so$/', basename(readlink('/lib/libc.so.6')), $matches)) {

                list($major, $minor) = explode('.', $matches[1]);

            }

        }

        if (!($major && $minor)) {

            return $glibc = '';

        }

        return $glibc = "glibc{$major}.{$minor}";

    }

    function getSignature()

    {

        if (empty($this->extra)) {

            return "{$this->sysname}-{$this->release}-{$this->cpu}";

        }

        return "{$this->sysname}-{$this->release}-{$this->cpu}-{$this->extra}";

    }

    function getSysname()

    {

        return $this->sysname;

    }

    function getNodename()

    {

        return $this->nodename;

    }

    function getCpu()

    {

        return $this->cpu;

    }

    function getRelease()

    {

        return $this->release;

    }

    function getExtra()

    {

        return $this->extra;

    }

    function matchSignature($match)

    {

        $fragments = is_array($match) ? $match : explode('-', $match);

        $n = count($fragments);

        $matches = 0;

        if ($n > 0) {

            $matches += $this->_matchFragment($fragments[0], $this->sysname);

        }

        if ($n > 1) {

            $matches += $this->_matchFragment($fragments[1], $this->release);

        }

        if ($n > 2) {

            $matches += $this->_matchFragment($fragments[2], $this->cpu);

        }

        if ($n > 3) {

            $matches += $this->_matchFragment($fragments[3], $this->extra);

        }

        return ($matches == $n);

    }

    function _matchFragment($fragment, $value)

    {

        if (strcspn($fragment, '*?') < strlen($fragment)) {

            $reg = '/^' . str_replace(array('*', '?', '/'), array('.*', '.', '\\/'), $fragment) . '\\z/';

            return preg_match($reg, $value);

        }

        return ($fragment == '*' || !strcasecmp($fragment, $value));

    }

}

/*

 * Local Variables:

 * indent-tabs-mode: nil

 * c-basic-offset: 4

 * End:

 */