src: remove the need for PHP's posix extension

src/etc/inc/interfaces.inc

@@ -1296,8 +1296,9 @@ function interface_bring_down($interface = "wan", $destroy = false, $ifacecfg =
 	case "slaac":
 	case "dhcp6":
 		$pidv6 = find_dhcp6c_process($realif);
-		if($pidv6)
-			posix_kill($pidv6, SIGTERM);
+		if ($pidv6) {
+			sigkillbypid($pidv6, 'TERM');
+		}
 		sleep(3);
 		unlink_if_exists("{$g['varetc_path']}/dhcp6c_{$interface}.conf");
 		if (does_interface_exist($realifv6)) {
@@ -2777,15 +2778,17 @@ function find_dhclient_process($interface) {
 	return intval($pid);
 }
 
-function kill_dhclient_process($interface) {
-	if (empty($interface) || !does_interface_exist($interface))
+function kill_dhclient_process($interface)
+{
+	if (empty($interface) || !does_interface_exist($interface)) {
 		return;
+	}
 
 	$i = 0;
 	while ((($pid = find_dhclient_process($interface)) != 0) && ($i < 3)) {
 		/* 3rd time make it die for sure */
-		$sig = ($i == 2 ? SIGKILL : SIGTERM);
-		posix_kill($pid, $sig);
+		$sig = ($i == 2 ? 'KILL' : 'TERM');
+		sigkillbypid($pid, $sig);
 		sleep(1);
 		$i++;
 	}
@@ -3217,8 +3220,9 @@ function interface_track6_configure($interface = "lan", $wancfg, $linkupevent =
 			 */
 			$parentrealif = get_real_interface($wancfg['track6-interface']);
 			$pidv6 = find_dhcp6c_process($parentrealif);
-			if($pidv6)
-				posix_kill($pidv6, SIGHUP);
+			if ($pidv6) {
+				sigkillbypid($pidv6, 'HUP');
+			}
 		}
 		break;
 	}

src/etc/inc/ipsec.attributes.php

@@ -176,7 +176,7 @@ function parse_cisco_acl($attribs) {
 
 $rules = parse_cisco_acl($attributes);
 if (!empty($rules)) {
-	$pid = posix_getpid();
+	$pid = getmypid();
 	@file_put_contents("/tmp/ipsec_{$pid}{$common_name}.rules", $rules);
 	mwexec("/sbin/pfctl -a " . escapeshellarg("ipsec/{$common_name}") . " -f /tmp/ipsec_{$pid}" . escapeshellarg($common_name) . ".rules");
 	@unlink("/tmp/ipsec_{$pid}{$common_name}.rules");

src/etc/inc/openvpn.attributes.php

@@ -178,10 +178,8 @@ function parse_cisco_acl($attribs) {
 
 $rules = parse_cisco_acl($attributes);
 if (!empty($rules)) {
-	$pid = posix_getpid();
+	$pid = getmypid();
 	@file_put_contents("/tmp/ovpn_{$pid}{$common_name}.rules", $rules);
 	mwexec("/sbin/pfctl -a " . escapeshellarg("openvpn/{$common_name}") . " -f /tmp/ovpn_{$pid}" . escapeshellarg($common_name) . ".rules");
 	@unlink("/tmp/ovpn_{$pid}{$common_name}.rules");
 }
-
-?>

src/etc/inc/openvpn.inc

@@ -33,6 +33,7 @@ require_once('config.inc');
 require_once('certs.inc');
 require_once('pfsense-utils.inc');
 require_once('auth.inc');
+require_once('util.inc');
 
 global $openvpn_prots;
 $openvpn_prots = array("UDP", "UDP6", "TCP", "TCP6");
@@ -824,12 +825,13 @@ function openvpn_restart($mode, $settings) {
 		unlink($pfile);
 
 		/* send a term signal to the process */
-		posix_kill($pid, SIGTERM);
+		sigkillbypid($pid, 'TERM');
 
 		/* wait until the process exits */
-		while(posix_kill($pid, 0))
+		while(isvalidpid($pid)) {
 			usleep(250000);
 		}
+	}
 
 	if (isset($settings['disable']))
 		return;
@@ -881,7 +883,7 @@ function openvpn_delete($mode, & $settings) {
 		unlink($pfile);
 
 		/* send a term signal to the process */
-		posix_kill($pid, SIGTERM);
+		sigkillbypid($pid, 'TERM');
 	}
 
 	/* remove the device from the openvpn group */

src/etc/inc/pfsense-utils.inc

@@ -768,11 +768,11 @@ function is_serial_enabled()
 
 function reload_ttys()
 {
-	// Send a HUP signal to init will make it reload /etc/ttys
-	posix_kill(1, SIGHUP);
+	/* Send a HUP signal to init will make it reload /etc/ttys */
+	require_once('util.inc');
+	sigkillbypid(1, 'HUP');
 }
 
-
 /* DHCP enabled on any interfaces? */
 function is_dhcp_server_enabled() {
 	global $config;

src/etc/rc.php_ini_setup

@@ -48,9 +48,6 @@ PHPMODULES="$PHPMODULES hash"
 PHPMODULES="$PHPMODULES mcrypt"
 # Regexs, PERL style!
 PHPMODULES="$PHPMODULES pcre"
-# The mighty posix!
-PHPMODULES="$PHPMODULES posix"
-PHPMODULES="$PHPMODULES readline"
 # Login sessions
 PHPMODULES="$PHPMODULES session"
 # Extra sanity seatbelts

src/www/interfaces.php

@@ -38,6 +38,7 @@ require_once("filter.inc");
 require_once("shaper.inc");
 require_once("rrd.inc");
 require_once("vpn.inc");
+require_once("util.inc");
 require_once("xmlparse_attr.inc");
 
 $referer = (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '/interfaces.php');
@@ -787,8 +788,9 @@ if ($_POST['apply']) {
 			}
 			if ($wancfg['ipaddrv6'] == "dhcp6") {
 				$pid = find_dhcp6c_process($wancfg['if']);
-				if($pid)
-					posix_kill($pid, SIGTERM);
+				if ($pid) {
+					sigkillbypid($pid, 'TERM');
+				}
 			}
 		}
 		$ppp = array();