Kroc - 24 Sep 2004 - This is basic GeoIP (see http://www.maxmind.com for details) that return country code for a given IP adress.
################################################################################
#
# Basic GeoIP for tcl.
#
# Copyright © 2004 - David Zolli - http://www.kroc.tk
#
# This script is under NOL : http://wiki.tcl.tk/nol
#
# Version 1.0 - 24 Sep 2004
#
################################################################################
# This needs Maxmind CVS database available here :
# http://www.maxmind.com/download/geoip/database/GeoIPCountryCSV.zip
proc GeoIP { IP {cvsfile GeoIPCountryWhois.csv} } {
foreach "a b c d" [split $IP .] {
set V [expr 300+$a][expr 300+$b][expr 300+$c][expr 300+$d]
}
set fin [open $cvsfile r]
while {![eof $fin]} {
foreach "1 2 3 4 5 6" [split [gets $fin] ,] {
foreach "a b c d" [split [lindex $1 0] .] {
set min [expr 300+$a][expr 300+$b][expr 300+$c][expr 300+$d]
}
foreach "a b c d" [split [lindex $2 0] .] {
set max [expr 300+$a][expr 300+$b][expr 300+$c][expr 300+$d]
}
if { $V >= $min && $V <= $max } {
close $fin
return "[lindex $5 0] ([lindex $6 0])"
}
}
}
close $fin
return "?? (unknow)"
}rmax - 24 Sep 2004. This variant uses a modified file with fixed line length and makes a binary search over it. A conversion proc for the csv file is also included.
proc convert {} {
set fd [open GeoIPCountryWhois.csv]
set data [split [read -nonewline $fd] \n]
close $fd
foreach line [string map {\" ""} $data] {
foreach {a b c d e f} [split $line ,] break
puts [format "%ld % %s" [expr {$d - $c + 1}] $c $d $e ]
}
}
proc main {ip} {
foreach {a b c d} [split $ip .] break
set find [expr {$a<<24 | $b<<16 | $c<<8 | $d}]
set fd [open bar.ssv]
set size [file size bar.ssv]
set lines [expr {$size/21}]
set a 0; set b $lines; set found 0
while {!$found && $a != $b} {
set point [expr {($b+$a)/2}]
seek $fd [expr {$point * 21}]
foreach {start end country} [gets $fd] break
if "$find >= 0x$start" {
if "$find <= 0x$end" {
puts $ip $country
set found 1
} else {
set a $point
}
} else {
set b $point
}
}
}
foreach ip $argv {
puts [time {main $ip}]
}