<?php /* * Fetches details of the kernel routing table * * @param boolean $checkAccesss Perform connectivity test * @return string */ function getRouteInfo($checkAccess) { $rInfo = array(); // get all default routes exec('ip route list | sed -rn "s/default via (([0-9]{1,3}\.){3}[0-9]{1,3}).*dev (\w*).*src (([0-9]{1,3}\.){3}[0-9]{1,3}).*/\3 \4 \1/p"', $routes); $devpat = array("tun", "ppp"); // routing in case of VPN and PPP connection are different foreach ($devpat as $pat) { exec('ip route list | grep -oP "'.$pat.'[0-9]" | sort -u', $devs); } if (!empty($devs)) { foreach ($devs as $dev) { unset($gateway); unset($ipadd); exec('ip route list | sed -rn "s/^.*via (([0-9]{1,3}\.){3}[0-9]{1,3}) dev "' . $dev . '".*$/\1/p" | head -n 1', $gateway); if (empty($gateway)) { exec('ip route list | sed -rn "s/(([0-9]{1,3}\.){3}[0-9]{1,3}).*dev.*"' . $dev . '".*scope link src.*/\1/p"', $gateway); } exec('ifconfig -a | grep -i ' . $dev . ' -A 1 | grep -oP "(?<=inet )([0-9]{1,3}\.){3}[0-9]{1,3}"', $ipadd); if (!empty($gateway) && !empty($ipadd)) { $routes[]="$dev $ipadd[0] $gateway[0]"; } } } if (!empty($routes)) { foreach ($routes as $i => $route) { $prop = explode(' ', $route); $rInfo[$i]["interface"] = $prop[0]; $rInfo[$i]["ip-address"] = $prop[1]; $rInfo[$i]["gateway"] = $prop[2]; // resolve the name of the gateway (if possible) unset($host); exec('host ' . $prop[2] . ' | sed -rn "s/.*domain name pointer (.*)\./\1/p" | head -n 1', $host); $rInfo[$i]["gw-name"] = empty($host) ? "*" : $host[0]; if (isset($checkAccess) && $checkAccess) { // check internet connectivity w/ and w/o DNS resolution unset($okip); exec('ping -W1 -c 1 -I ' . $prop[0] . ' ' . RASPI_ACCESS_CHECK_IP . ' | sed -rn "s/.*icmp_seq=1.*time=.*/OK/p"', $okip); $rInfo[$i]["access-ip"] = empty($okip) ? false : true; unset($okdns); exec('ping -W1 -c 1 -I ' . $prop[0] . ' ' . RASPI_ACCESS_CHECK_DNS . ' | sed -rn "s/.*icmp_seq=1.*time=.*/OK/p"', $okdns); $rInfo[$i]["access-dns"] = empty($okdns) ? false : true; } } } else { $rInfo = array("error" => "No route to the internet found"); } return $rInfo; }