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author | Felix Fietkau <nbd@openwrt.org> | 2007-03-17 13:31:13 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2007-03-17 13:31:13 +0000 |
commit | e1bb37f2ec7aea568eee32a0c88f937a2b963c3f (patch) | |
tree | 7cae95af53894ba1bee5fa8f2c70856b4825c503 /package/base-files/files/bin/ipcalc.sh | |
parent | f1432e60f0fbfbf3d43eea51fd0d718c241b0d76 (diff) | |
download | master-31e0f0ae-e1bb37f2ec7aea568eee32a0c88f937a2b963c3f.tar.gz master-31e0f0ae-e1bb37f2ec7aea568eee32a0c88f937a2b963c3f.tar.bz2 master-31e0f0ae-e1bb37f2ec7aea568eee32a0c88f937a2b963c3f.zip |
upgrade dnsmasq to latest version, rewrite dnsmasq init script for uci, rename /bin/ipcalc to /bin/ipcalc.sh (fixes #1452)
SVN-Revision: 6595
Diffstat (limited to 'package/base-files/files/bin/ipcalc.sh')
-rwxr-xr-x | package/base-files/files/bin/ipcalc.sh | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/package/base-files/files/bin/ipcalc.sh b/package/base-files/files/bin/ipcalc.sh new file mode 100755 index 0000000000..e8efa6b96c --- /dev/null +++ b/package/base-files/files/bin/ipcalc.sh @@ -0,0 +1,32 @@ +#!/bin/sh + +awk -f /usr/lib/common.awk -f - $* <<EOF +BEGIN { + ipaddr=ip2int(ARGV[1]) + netmask=ip2int(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 + + print "IP="int2ip(ipaddr) + print "NETMASK="int2ip(netmask) + 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-1) + } +} +EOF |