C library for the MaxMind DB file format http://maxmind.github.io/libmaxminddb/
https://github.com/maxmind/libmaxminddb

MaxMind DB File Format Specification
https://maxmind.github.io/MaxMind-DB/

https://maxmind.github.io/libmaxminddb/
https://maxmind.github.io/libmaxminddb/#example


GeoLite2 Free Downloadable Databases
https://dev.maxmind.com/geoip/geolite2-free-geolocation-data


#FreeBSD:
#pkg install libmaxminddb
#[ -d /usr/local/share/GeoIP ] || mkdir -p /usr/local/share/GeoIP
#wget "https://download.maxmind.com/app/geoip_download?edition_id=GeoLite2-City&license_key=YOUR_LICENSE_KEY&suffix=tar.gz" -O/tmp/GeoLite2-Country.tar.gz
#tar -xz --cd /tmp -f /tmp/GeoLite2-Country.tar.gz $(tar -tzf /tmp/GeoLite2-Country.tar.gz | grep GeoLite2-Country.mmdb)
#mv /tmp/$(tar -tzf /tmp/GeoLite2-Country.tar.gz | grep GeoLite2-Country.mmdb) /usr/local/share/GeoIP/
#rm -rf /tmp/$(tar -tzf /tmp/GeoLite2-Country.tar.gz | grep GeoLite2-Country.mmdb | xargs dirname) /tmp/GeoLite2-Country.tar.gz
#wget "https://download.maxmind.com/app/geoip_download?edition_id=GeoLite2-City&license_key=YOUR_LICENSE_KEY&suffix=tar.gz" -O/tmp/GeoLite2-City.tar.gz
#tar -xz --cd /tmp -f /tmp/GeoLite2-City.tar.gz $(tar -tzf /tmp/GeoLite2-City.tar.gz | grep GeoLite2-City.mmdb)
#mv /tmp/$(tar -tzf /tmp/GeoLite2-City.tar.gz | grep GeoLite2-City.mmdb) /usr/local/share/GeoIP/
##rm -rf /tmp/$(tar -tzf /tmp/GeoLite2-City.tar.gz | grep GeoLite2-City.mmdb | xargs dirname) /tmp/GeoLite2-City.tar.gz

FreeBSD:
pkg install libmaxminddb
[ -d /usr/local/share/GeoIP ] || mkdir -p /usr/local/share/GeoIP
curl https://updates.maxmind.com/app/update_getfilename?product_id=GeoLite2-City
wget --user=YOUR_ACCOUNT_ID --password=YOUR_LICENSE_KEY https://updates.maxmind.com/geoip/databases/GeoLite2-City/update -O/usr/local/share/GeoIP/GeoLite2-City.mmdb.gz
gzip -t /usr/local/share/GeoIP/GeoLite2-City.mmdb.gz && gzip -d -f /usr/local/share/GeoIP/GeoLite2-City.mmdb.gz
curl https://updates.maxmind.com/app/update_getfilename?product_id=GeoLite2-Country
wget --user=YOUR_ACCOUNT_ID --password=YOUR_LICENSE_KEY https://updates.maxmind.com/geoip/databases/GeoLite2-Country/update -O/usr/local/share/GeoIP/GeoLite2-Country.mmdb.gz
gzip -t /usr/local/share/GeoIP/GeoLite2-Country.mmdb.gz && gzip -d -f /usr/local/share/GeoIP/GeoLite2-Country.mmdb.gz


CentOS 8
yum install -y libmaxminddb libmaxminddb-devel geoipupdate
perl -pi -e 's|^AccountID 0$|AccountID YOUR_ACCOUNT_ID|; s|^LicenseKey 000000000000$|LicenseKey YOUR_LICENSE_KEY|;' /etc/GeoIP.conf
geoipupdate -v
ls -l /usr/share/GeoIP/GeoLite2-*.mmdb


#CentOS 9
#yum install -y libmaxminddb libmaxminddb-devel
#yum install -y rpm-build perl-PerlIO-gzip
#wget https://vault.centos.org/centos/8-stream/AppStream/Source/SPackages/geoipupdate-2.5.0-2.el8.src.rpm -O/tmp/geoipupdate-2.5.0-2.el8.src.rpm
#rpmbuild --rebuild /tmp/geoipupdate-2.5.0-2.el8.src.rpm
#rpm -Uvh ~/rpmbuild/RPMS/x86_64/geoipupdate-2.5.0-2.el9.x86_64.rpm ~/rpmbuild/RPMS/noarch/geoipupdate-cron-2.5.0-2.el9.noarch.rpm
#perl -pi -e 's|^AccountID 0$|AccountID YOUR_ACCOUNT_ID|; s|^LicenseKey 000000000000$|LicenseKey YOUR_LICENSE_KEY|;' /etc/GeoIP.conf
#geoipupdate -v
#ls -l /usr/share/GeoIP/GeoLite2-*.mmdb

CentOS 9
yum install -y libmaxminddb libmaxminddb-devel
yum install -y rpm-build perl-PerlIO-gzip
yum install -y perl-LWP-Protocol-https
wget https://vault.centos.org/centos/8-stream/AppStream/Source/SPackages/geoipupdate-2.5.0-2.el8.src.rpm -O/tmp/geoipupdate-2.5.0-2.el8.src.rpm
rpm -i /tmp/geoipupdate-2.5.0-2.el8.src.rpm
wget https://mta.org.ua/GeoIP/packages/rpms-redhat/geoipupdate-2.5.0-2.el8.corvax/specs/geoipupdate.spec -O ~/rpmbuild/SPECS/geoipupdate.spec
rsync -avL rsync://rsync.mta.org.ua/GeoIP/packages/rpms-redhat/geoipupdate-2.5.0-2.el8.corvax/sources/ ~/rpmbuild/SOURCES/
rpmbuild -ba ~/rpmbuild/SPECS/geoipupdate.spec
rpm -Uvh ~/rpmbuild/RPMS/x86_64/geoipupdate-2.5.0-2.el9.corvax.x86_64.rpm ~/rpmbuild/RPMS/noarch/geoipupdate-cron-2.5.0-2.el9.corvax.noarch.rpm
perl -pi -e 's|^AccountID 0$|AccountID YOUR_ACCOUNT_ID|; s|^LicenseKey 000000000000$|LicenseKey YOUR_LICENSE_KEY|;' /etc/GeoIP.conf
#geoipupdate-pureperl.pl -v -f /etc/GeoIP.conf -d /usr/share/GeoIP
geoipupdate -v
ls -l /usr/share/GeoIP/GeoLite2-*.mmdb


Ubuntu:
apt-get update && apt-get install -y libmaxminddb0 libmaxminddb-dev geoipupdate mmdb-bin
perl -pi -e 's|^\# AccountID YOUR_ACCOUNT_ID_HERE$|AccountID YOUR_ACCOUNT_ID|; s|^\# LicenseKey YOUR_LICENSE_KEY_HERE$|LicenseKey YOUR_LICENSE_KEY|;' /etc/GeoIP.conf
geoipupdate -v
ls -l /var/lib/GeoIP/GeoLite2-*.mmdb



	warn	set acl_m_maxminddb_result = ${dlfunc{/usr/local/libexec/exim/exim-dlfunc.so}{maxminddb}{/usr/local/share/GeoIP/GeoLite2-Country.mmdb}{$sender_host_address}{country registered_country continent}{YES}}
		set acl_m_ip2country_result = ${extract{country}{$acl_m_maxminddb_result}}

	warn	set acl_m_maxminddb_result = ${dlfunc{/usr/local/libexec/exim/exim-dlfunc.so}{maxminddb}{/usr/local/share/GeoIP/GeoLite2-ASN.mmdb}{$sender_host_address}{asn}{YES}}
		set acl_m_ip2asn_result = ${extract{asn}{$acl_m_maxminddb_result}}