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base-files: ipcalc.sh: check for params before calculating start/end

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With this patch, ipcalc only calculates range boundaries if the
corresponding parameters are supplied.

Signed-off-by: Leon M. George <leon@georgemail.eu>
This commit is contained in:
Leon M. George 2022-05-05 23:19:53 +02:00 committed by Christian Marangi
parent 4970dd027b
commit 00a20335ba
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GPG Key ID: AC001D09ADBFEAD7
1 changed files with 13 additions and 12 deletions
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25
package/base-files/files/bin/ipcalc.sh
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@ -46,14 +46,6 @@ BEGIN {
network=and(ipaddr,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,compl32(netmask))-1
if (end>limit) end=limit
print "IP="int2ip(ipaddr)
print "NETMASK="int2ip(netmask)
print "BROADCAST="int2ip(broadcast)
@ -63,9 +55,18 @@ BEGIN {
# range calculations:
# ipcalc <ip> <netmask> <start> <num>
if (ARGC > 3) {
print "START="int2ip(start)
print "END="int2ip(end)
}
if (ARGC <= 3)
exit(0)
start=or(network,and(ip2int(ARGV[3]),compl32(netmask)))
limit=network+1
if (start<limit) start=limit
end=start+ARGV[4]
limit=or(network,compl32(netmask))-1
if (end>limit) end=limit
print "START="int2ip(start)
print "END="int2ip(end)
}
EOF