diff options
Diffstat (limited to 'package/base-files/files/bin/ipcalc.sh')
| -rwxr-xr-x | package/base-files/files/bin/ipcalc.sh | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh index d6ef16870..7463d6bdd 100755 --- a/package/base-files/files/bin/ipcalc.sh +++ b/package/base-files/files/bin/ipcalc.sh @@ -22,6 +22,11 @@ function int2ip(ip,ret,x) { return ret } +function compl32(v) { + ret=xor(v, 0xffffffff) + return ret +} + BEGIN { slpos=index(ARGV[1],"/") if (slpos == 0) { @@ -29,27 +34,27 @@ BEGIN { netmask=ip2int(ARGV[2]) } else { ipaddr=ip2int(substr(ARGV[1],0,slpos-1)) - netmask=compl(2**(32-int(substr(ARGV[1],slpos+1)))-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)) + broadcast=or(network,compl32(netmask)) - start=or(network,and(ip2int(ARGV[3]),compl(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> |