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133 lines
4.4 KiB
133 lines
4.4 KiB
GeoIP 1.4.0
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-----------
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IMPORTANT API Change for 1.3.x and above users for GeoIP Region database
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GeoIPRegion.region is no longer a pointer but an in-structure
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array so test the first byte of region == 0 rather testing if the region
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pointer is NULL.
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IMPORTANT API Change for 1.1.x and above users - as of GeoIP 1.1.0 the
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GeoIP_country_xxx_by_xxx functions return NULL if a country can not
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be found (it used to return '--' or 'N/A'. Be sure to check the
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return value for NULL, to avoid segmentation faults!
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GeoIP is a C library that enables the user to find geographical and
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network information of an IP address.
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Included is a free GeoLite Country database
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that is updated at the beginning of every month.
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To download the latest free GeoLite Country database, go to:
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http://www.maxmind.com/app/geoip_country
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There is also a free city-level geolocation database, GeoLite City,
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available from:
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http://www.maxmind.com/app/geolitecity
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We also offer commercial GeoIP databases with greater accuracy and
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additional network information, for more details, see:
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http://www.maxmind.com/app/products
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As of version 1.3.6, the GeoIP C library is thread safe.
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This module can be used to automatically select the geographically closest
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mirror, to analyze your web server logs to determine the countries of your
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visitors, for credit card fraud detection, and for software export controls.
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If you use GeoIP to block access from high risk countries in order
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to reduce fraud or abuse, you should also block access from known
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proxy servers. For more details, see:
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http://www.maxmind.com/app/proxy
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To install, run:
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./configure
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make
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make check
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make install
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The GeoIP C library relies on GNU make, not on BSD make
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MEMORY CACHING AND OTHER OPTIONS
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There are four options available:
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GEOIP_STANDARD - read database from filesystem, uses least memory.
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GEOIP_MEMORY_CACHE - load database into memory, faster performance
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but uses more memory
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GEOIP_CHECK_CACHE - check for updated database. If database has been updated,
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reload filehandle and/or memory cache.
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GEOIP_INDEX_CACHE - just cache
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the most frequently accessed index portion of the database, resulting
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in faster lookups than GEOIP_STANDARD, but less memory usage than
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GEOIP_MEMORY_CACHE - useful for larger databases such as
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GeoIP Organization and GeoIP City. Note, for GeoIP Country, Region
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and Netspeed databases, GEOIP_INDEX_CACHE is equivalent to GEOIP_MEMORY_CACHE
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The options can be combined using bit operators. For example you can
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use both GEOIP_MEMORY_CACHE and GEOIP_CHECK_CACHE by calling:
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GeoIP_open("/path/to/GeoIP.dat", GEOIP_MEMORY_CACHE | GEOIP_CHECK_CACHE);
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EXAMPLES
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See
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test/
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test-geoip.c
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test-geoip-region.c
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test-geoip-city.c
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test-geoip-isp.c
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test-geoip-org.c
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test-geoip-netspeed.c
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For examples of how to use the API. The test-geoip.c works with both the free and paid
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GeoIP Country databases. The other example programs require the paid databases available
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from http://www.maxmind.com/app/products
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AUTOMATIC UPDATES
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MaxMind offers a service where you can have your database updated
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automically each week. For more details see:
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http://www.maxmind.com/app/license_key
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TROUBLESHOOTING
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Note that it is recommended that you use GNU make. Also, if you are using
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OpenBSD, GeoIP requires OpenBSD 3.1 or greater.
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if you get "cannot load shared object file: No such file or directory"
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error, add the directory libGeoIP.so was installed to to /etc/ld.so.conf
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and run ldconfig
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On Solaris, if you get a
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ld: fatal: relocations remain against allocatable but non-writable sections
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error, try running
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# make clean
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# ./configure --disable-shared
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# make
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If you get a "ar : command not found" error, make sure that ar is
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in your path. On Solaris, ar is typically found in /usr/ccs/bin
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If you get a "geoipupdate.c:24: getopt.h: No such file or directory"
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error, run
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# export CPPFLAGS="-I/usr/local/include"
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(assuming that getopt.h is in /usr/local/include)
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If you get a "zlib.h: No such file or directory" error, make sure
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that the zlib development libraries are installed on your server.
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These are typically included in a "zlib-devel" package.
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If you get a "bad interpreter: No such file or directory" error
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when running ./configure, make sure that there are no DOS
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returns in the configure script. To remove DOS returns,
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run perl -pi -e 's!\r!!g' configure.
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Please contact support@maxmind.com with any questions or bug
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reports.
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