diff options
Diffstat (limited to 'package/base-files/files/bin/ipcalc.sh')
| -rwxr-xr-x | package/base-files/files/bin/ipcalc.sh | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh index 9057e85..d6ef168 100755 --- a/package/base-files/files/bin/ipcalc.sh +++ b/package/base-files/files/bin/ipcalc.sh @@ -23,15 +23,24 @@ function int2ip(ip,ret,x) { } 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=compl(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))) limit=network+1 if (start<limit) start=limit - + end=start+ARGV[4] limit=or(network,compl(netmask))-1 if (end>limit) end=limit @@ -41,10 +50,10 @@ BEGIN { print "BROADCAST="int2ip(broadcast) print "NETWORK="int2ip(network) print "PREFIX="32-bitcount(compl(netmask)) - + # range calculations: # ipcalc <ip> <netmask> <start> <num> - + if (ARGC > 3) { print "START="int2ip(start) print "END="int2ip(end) |