VHost listing script
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(New page: <big>vhosts - vhost listing script</big> ==What is it?== Servers dedicated for irc chat clients (aka: shell servers) often provide multiple IP addresses with cute names. These are commonly...) |
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==Bash Source Code== | ==Bash Source Code== | ||
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#!/usr/local/bin/bash | #!/usr/local/bin/bash | ||
Revision as of 00:50, 2 March 2009
vhosts - vhost listing script
What is it?
Servers dedicated for irc chat clients (aka: shell servers) often provide multiple IP addresses with cute names. These are commonly known as 'vanity hosts' or vhosts and usually have colorful or descriptive IP names that the user may choose for outgoing connections so that their hostname shows up as fancy.host.name.com instead of 1-124-51.lame.broadbandsupplier.com.
The script below provides a means to list the IPs and names assigned to them as well as performing some checks such as checking that the forward hostname resolves to the reverse IP.
Bash Source Code
#!/usr/local/bin/bash ##################### # Settings ##################### ### regexp for IP search (first octect of IP addresses should be sufficient) ### ### to search multiple subnets use the infix operator | such as: #IPSEARCH="147|64" IPSEARCH="204"; ### colors ### #title color COL1="\x1b[0;31;40m"; #ip color COL2="\x1b[0;32;40m"; #'=' color COL3="\x1b[0;34;40m"; #domain color COL4="\x1b[0;33;40m"; #error color COL5="\x1b[0;31;40m"; #colors off (back to natural terminal colors) COLOFF="\x1b[0;37;00m"; ### footer (Displayed at end of list) ### FOOTER="Type v6hosts for ipv6 hosts" ### Command paths ### IFCONFIG="/sbin/ifconfig"; GREP="/usr/bin/grep"; AWK="/usr/bin/awk"; CUT="/usr/bin/cut"; HOST="/usr/bin/host"; ################## #Code goes here ################## HOSTNAME=`hostname`; echo -en "$COL1 Hostnames for $HOSTNAME\n"; for ip in `$IFCONFIG | $GREP inet | $AWK '{print $2}' | $CUT -d: -f2 | $GREP -E "$IPSEARCH"`; do echo -ne "$COL2$ip $COL3="; if hostreply=`$HOST $ip`; then domain=`echo $hostreply | $GREP domain | $AWK '{print $5}'`; if fwdreply=`$HOST -t A $domain`; then forward=`echo "$fwdreply" | $AWK '{print $4}'`; if [ "$forward" = "$ip" ]; then error=""; else error="$COL5(Forward lookup mismatch: $forward)"; fi else error="$COL5(forward does not resolve)"; fi echo -ne "$COL4 $domain $error\n"; else echo -ne "$COL5 reverse lookup failed ._.\n"; fi done echo -ne "$COLOFF\n"; if [ -n "$FOOTER" ]; then echo $FOOTER fi
