Well. I'm using User-Agent header to identify current version. It have one of two form:
- Linksys/SPA504G-7.4.3a (1EDF0F4A6C48)(CXT199006KD)
- Cisco/SPA504G-7.4.3a (1EDF0F4A6C48)(CXT199006KD)
There's model, firmware version, MAC address and serial number. Lets fetch the version number into $_GET["SW"] variable:
$hdr=apache_request_headers();
if (preg_match('/^Linksys\/SPA50.G-/',$hdr["User-Agent"])>0) {
$_GET["SW"]=strstr(substr($hdr["User-Agent"],16), " ", true);
} else if (preg_match('/^Cisco\/SPA50.G-/',$hdr["User-Agent"])>0) {
$_GET["SW"]=strstr(substr($hdr["User-Agent"],14), " ", true);
}
Now we know the current version. Now the upgrade logics. Note we are on 7.5.5 now. We are testing 7.6.1. The following fragment *does not* upgrade if phone's current firmware is 7.5.5 or 7.6.1 - otherwise it upgrade to 7.5.5. Remember the current version is in $_GET["SW"] variable.
if ( $_GET["SW"] != "" && $_GET["SW"] != "7.5.5" && $_GET["SW"] != "7.6.1" ) {
$upgrade = true;
// upgrade from FW < 7.5.2b to FW > 7.5.2b require upgrade to 7.5.2b !!
if (cmp_ver($_GET["SW"], ">=", "7.5.2b")) {
$upgrade_rule = 'https://$A/Cisco/spa50x-30x-7-5-5.bin?SW='.$_GET["SW"];
} else {
$upgrade_rule = 'https://$(A)/Cisco/spa50x-30x-7-5-2b.bin?SW='.$_GET["SW"];
}
};
Most of work is done. Now you need just to emit appropriate Upgrade_Rule content according the analysis results:
if ($upgrade) {
echo "<Upgrade_Enable>Yes</Upgrade_Enable>";
} else {
echo "<Upgrade_Enable>No</Upgrade_Enable>";
}
echo "<Upgrade_Rule>$upgrade_rule</Upgrade_Rule>";
Note the cmp_ver() function used above is my implementation of version comparsion:
function parse_sw_version($v) {
$str = preg_replace("/^([0-9]+)([a-z]*)\.([0-9]+)([a-z]*)\.([0-9]+)([a-z]*)((\([0-9]*\)(_[0-9]*){0,1}){0,1})$/i", "\$1:\$2:\$3:\$4:\$5:\$6:\$7", $v);
$ar = explode(':', $str);
return($ar);
}
function cmp_ver($v1,$op,$v2) {
$d = "";
if ($v1 == "*" && $v2 == "*") {
$d = 0;
} else if ($v1 == "*" && $v2 != "*") {
$d = -1;
} else if ($v1 != "*" && $v2 == "*") {
$d = -1;
} else if ($v1 != "*" && $v2 != "*") {
$ar1 = parse_sw_version($v1);
$ar2 = parse_sw_version($v2);
while(true) {
if ($ar1[0]!=$ar2[0]) { $d=($ar1[0]-$ar2[0]) ; break; }
if ($ar1[1]!=$ar2[1]) { $d=strcmp($ar1[1],$ar2[2]) ; break; }
if ($ar1[2]!=$ar2[2]) { $d=($ar1[2]-$ar2[2]) ; break; }
if ($ar1[3]!=$ar2[3]) { $d=strcmp($ar1[3],$ar2[3]) ; break; }
if ($ar1[4]!=$ar2[4]) { $d=($ar1[4]-$ar2[4]) ; break; }
if ($ar1[5]!=$ar2[5]) { $d=strcmp($ar1[5],$ar2[5]) ; break; }
if ($ar1[6]!=$ar2[6]) { $d=($ar1[6]-$ar2[6]) ; break; }
$d=0 ; break;
}
}
if ($d < 0 ) {
$d=-1;
} else if ($d > 0) {
$d=1;
}
switch($op) {
case '==': return($d == 0);
case '!=': return($d != 0);
case '>=': return($d >= 0);
case '<=': return($d <= 0);
case '<': return($d < 0);
case '>': return($d > 0);
case '': return($d);
default: return(false);
}
}
Hope it help. Ask in doubts. Rate if it help you.
