X-Git-Url: https://git.archive.openwrt.org/?p=openwrt.git;a=blobdiff_plain;f=package%2Fbase-files%2Ffiles%2Fbin%2Fipcalc.sh;h=7463d6bdda9cdabb0d10fefb7bb82a8a00e46a4c;hp=9057e859289b8dd5f0ba66d2c2d50c842a9a7e76;hb=afc4535cfc5d687912501ccf7103ae6975841705;hpb=9ba2318fc73506d42afdd36c3851a1f21fd0f227

diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh
index 9057e85928..7463d6bdda 100755
--- a/package/base-files/files/bin/ipcalc.sh
+++ b/package/base-files/files/bin/ipcalc.sh
@@ -22,29 +22,43 @@ function int2ip(ip,ret,x) {
 	return ret
 }
 
+function compl32(v) {
+	ret=xor(v, 0xffffffff)
+	return ret
+}
+
 BEGIN {
-	ipaddr=ip2int(ARGV[1])
-	netmask=ip2int(ARGV[2])
+	slpos=index(ARGV[1],"/")
+	if (slpos == 0) {
+		ipaddr=ip2int(ARGV[1])
+		netmask=ip2int(ARGV[2])
+	} else {
+		ipaddr=ip2int(substr(ARGV[1],0,slpos-1))
+		netmask=compl32(2**(32-int(substr(ARGV[1],slpos+1)))-1)
+		ARGV[4]=ARGV[3]
+		ARGV[3]=ARGV[2]
+	}
+
 	network=and(ipaddr,netmask)
-	broadcast=or(network,compl(netmask))
-	
-	start=or(network,and(ip2int(ARGV[3]),compl(netmask)))
+	broadcast=or(network,compl32(netmask))
+
+	start=or(network,and(ip2int(ARGV[3]),compl32(netmask)))
 	limit=network+1
 	if (start<limit) start=limit
-	
+
 	end=start+ARGV[4]
-	limit=or(network,compl(netmask))-1
+	limit=or(network,compl32(netmask))-1
 	if (end>limit) end=limit
 
 	print "IP="int2ip(ipaddr)
 	print "NETMASK="int2ip(netmask)
 	print "BROADCAST="int2ip(broadcast)
 	print "NETWORK="int2ip(network)
-	print "PREFIX="32-bitcount(compl(netmask))
-	
+	print "PREFIX="32-bitcount(compl32(netmask))
+
 	# range calculations:
 	# ipcalc <ip> <netmask> <start> <num>
-	
+
 	if (ARGC > 3) {
 		print "START="int2ip(start)
 		print "END="int2ip(end)