## 1.2.0 - 2016-03-23

* Four additional fields were added to the end of the `MMDB_search_node_s`

  struct returned by `MMDB_read_node`. These fields allow the user to iterate

  through the search tree without making undocumented assumptions about how

  this library works internally and without knowing the specific details of

  the database format. GitHub #110.

## 1.1.5 - 2016-03-20

* Previously, reading a database with a pointer in the metadata would cause an

  `MMDB_INVALID_METADATA_ERROR` to be returned. This was due to an invalid

  offset being used when calculating the pointer. The `data_section` and

  `metadata_section` fields now both point to the beginning of the data

  section. Previously, `data_section` pointed to the beginning of the data

  separator. This will not affect anyone using only documented fields from

  `MMDB_s`.

* `MMDB_lookup_sockaddr` will set `mmdb_error` to

  `MMDB_IPV6_LOOKUP_IN_IPV4_DATABASE_ERROR` if an IPv6 `sockaddr` is looked up

  in an IPv4-only database. Previously only `MMDB_lookup_string` would set

  this error code.

* When resolving an address, this library now relies on `getaddrinfo` to

  determine the address family rather than trying to guess it itself.

## 1.1.4 - 2016-01-06

* Packaging fixes. The 1.1.3 tarball release contained a lot of extra junk in

  the t/ directory.

## 1.1.3 - 2016-01-05

* Added several additional checks to make sure that we don't attempt to read

  past the end of the databases's data section. Implemented by Tobias

  Stoeckmann. GitHub #103.

* When searching for the database metadata, there was a bug that caused the

  code to think it had found valid metadata when none existed. In addition,

  this could lead to an attempt to read past the end of the database

  entirely. Finally, if there are multiple metadata markers in the database,

  we treat the final one as the start of the metdata, instead of the first.

  Implemented by Tobias Stoeckmann. GitHub #102.

* Don't attempt to mmap a file that is too large to be mmapped on the

  system. Implemented by Tobias Stoeckmann. GitHub #101.

* Added a missing out of memory check when reading a file's

  metadata. Implemented by Tobias Stoeckmann. GitHub #101.

* Added several additional checks to make sure that we never attempt to

  `malloc` more than `SIZE_MAX` memory, which would lead to integer

  overflow. This could only happen with pathological databases. Implemented by

  Tobias Stoeckmann. GitHub #101.

## 1.1.2 - 2015-11-16

* IMPORTANT: This release includes a number of important security fixes. Among

  these fixes is improved validation of the database metadata. Unfortunately,

  MaxMind GeoIP2 and GeoLite2 databases created earlier than January 28, 2014

  had an invalid data type for the `record_size` in the metadata. Previously

  these databases worked on little endian machines with libmaxminddb but did

  not work on big endian machines. Due to increased safety checks when reading

  the file, these databases will no longer work on any platform. If you are

  using one of these databases, we recommend that you upgrade to the latest

  GeoLite2 or GeoIP2 database

* Added pkg-config support. If your system supports it, then running `make

  install` now installs a `libmaxminddb.pc` file for pkgconfig. Implemented by

  Jan Vcelak.

* Several segmentation faults found with afl-fuzz were fixed. These were

  caused by missing bounds checking and missing data type verification checks.

* `MMDB_get_entry_data_list` will now fail on data structures with a depth

  greater than 512 and data structures that are cyclic. This should not

  affect any known MaxMind DB in production. All databases produced by

  MaxMind have a depth of less than five.

## 1.1.1 - 2015-07-22

* Added `maxminddb-compat-util.h` as a source file to dist.

## 1.1.0 - 2015-07-21

* Previously, when there was an error in `MMDB_open()`, `errno` would

  generally be overwritten during cleanup, preventing a useful value from

  being returned to the caller. This was changed so that the `errno` value

  from the function call that caused the error is restored before returning to

  the caller. In particular, this is important for `MMDB_IO_ERROR` errors as

  checking `errno` is often the only way to determine what actually failed.

* If `mmap()` fails due to running out of memory space, an

  `MMDB_OUT_OF_MEMORY_ERROR` is now returned from `MMDB_open` rather than an

  `MMDB_IO_ERROR`.

* On Windows, the `CreateFileMappingA()` handle was not properly closed if

  opening the database succeeded. Fixed by Bly Hostetler. GitHub #75 & #76.

* On Windows, we were not checking the return value of `CreateFileMappingA()`

  properly for errors. Fixed by Bly Hotetler. GitHub #78.

* Several warnings from Clang's scan-build were fixed. GitHub #86.

* All headers are now installed in `$(includedir)`. GitHub #89.

* We no longer install `maxminddb-compat-util.h`. This header was intended for

  internal use only.

## 1.0.4 - 2015-01-02

* If you used a non-integer string as an array index when doing a lookup with

  `MMDB_get_value()`, `MMDB_vget_value()`, or `MMDB_aget_value()`, the first

  element of the array would be returned rather than an error. A

  `MMDB_LOOKUP_PATH_DOES_NOT_MATCH_DATA_ERROR` error will now be returned.

  GitHub #61.

* If a number larger than `LONG_MAX` was used in the same functions,

  `LONG_MAX` would have been used in the lookup. Now a

  `MMDB_INVALID_LOOKUP_PATH_ERROR` error will be returned.

* Visual Studio build files were added for unit tests and some compatibility

  issues with the tests were fixed.

* Visual Studio project was updated to use property pages. Patch by Andre.

  GitHub #69.

* A test failure in `t/compile_c++_t.pl` on new installs was fixed.

## 1.0.3 - 2014-12-02

* A memory and file handle leak on Win32 was fixed when getting the database

  size fails. Patch by Federico G. Schwindt. GitHub PR #49.

* Documentation fix. Federico G. Schwindt. GitHub PR #50.

* Added Visual Studio build files and fixed incorrect CreateFileMappingA

  usage. Patch by Andre. GitHub #52.

* The includes for the Windows header files were made lowercase in order to

  match the actual file names on case-sensitive file systems. GitHub PR #57.

* Removed `realloc()` calls that caused warnings on Windows and generally

  cleaned up memory allocation in `MMDB_vget_value()`. See relevant discussion

  in GitHub #52.

* Added an `extern "C" { ... }` wrapper to maxminddb.h when compiling with a

  C++ compiler. GitHub #55.

## 1.0.2 - 2014-09-22

* Fixed a number of small issues found by Coverity.

* When freeing the MMDB struct in `MMDB_close()` we make sure to set the

  pointers to NULL after freeing the memory they point to. This makes it safe

  to call `MMDB_close` more than once on the same `MMDB_s` struct

  pointer. Before this change, calling this function twice on the same pointer

  could cause the code to free memory that belonged to something else in the

  process. Patch by Shuxin Yang. GitHub PR #41.

## 1.0.1 - 2014-09-03

* Added missing LICENSE and NOTICE files to distribution. No code changes.

## 1.0.0 - 2014-09-02

* Bumped version to 1.0.0. No code changes.

## 0.5.6 - 2014-07-21

* There was a leak in the `MMDB_open()` sub when it was called against a file

  which did not contain any MMDB metadata. Reported by Federico

  G. Schwindt. GitHub issue #36.

* Fixed an error that occurred when passing AI_V4MAPPED to `getaddrinfo()` on

  FreeBSD. Apparently this macro is defined but doesn't work the way we

  expected it to on that platform.

* Made sure to call `freeaddrinfo()` when a call to `getaddrinfo()` fails but

  still allocated memory.

* Fixed a segfault in the tests that occurred on FreeBSD if we passed a NULL

  value to `freeaddrinfo()`.

* Added a missing step to the README.md file for installing from our GitHub

  repository. Patch by Yasith Fernando.

* Added instructions for installing via Homebrew. Patch by Yasith Fernando.

## 0.5.5 - 2014-03-11

* The previous tarball failed to compile because it was missing the

  src/maxminddb-compat-util.h file. Reported by Günter Grodotzki. GitHub issue

  #18.

## 0.5.4 - 2014-03-03

* Added support for compiling in the MinGW environment. Patch by Michael

  Eisendle.

* Added const declarations to many spots in the public API. None of these

  should require changes to existing code.

* Various documentation improvements.

* Changed the license to the Apache 2.0 license.

## 0.5.3 - 2013-12-23

* The internal value_for_key_as_uint16 method was returning a uint32_t instead

  of a uint16_t. Reported by Robert Wells. GitHub issue #11.

* The ip_version member of the MMDB_metadata_s struct was a uint8_t, even

  though the docs and spec said it should be a uint16_t. Reported by Robert

  Wells. GitHub issue #11.

* The mmdblookup_t.pl test now reports that it needs IPC::Run3 to run (which

  it always did, but it didn't tell you this). Patch by Elan Ruusamäe. GitHub

  issue #10.

## 0.5.2 - 2013-11-20

* Running `make` from the tarball failed. This is now fixed.

## 0.5.1 - 2013-11-20

* Renamed MMDB_LOOKUP_PATH_DOES_NOT_MATCH_DATA define to

  MMDB_LOOKUP_PATH_DOES_NOT_MATCH_DATA_ERROR for consistency. Fixes github

  issue #5. Reported by Albert Strasheim.

* Updated README.md to show git clone with --recursive flag so you get the

  needed submodules. Fixes github issue #4. Reported by Ryan Peck.

* Fixed some bugs with the MMDB_get_*value functions when navigating a data

  structure that included pointers. Fixes github issue #3. Reported by

  bagadon.

* Fixed compilation problems on OSX and OpenBSD. We have tested this on OSX

  and OpenBSD 5.4. Fixes github issue #6.

* Removed some unneeded memory allocations and added const to many variable

  declarations. Based on patches by Timo Teräs. Github issue #8.

* Added a test that uses threads to check for thread safety issue in the

  library.

* Distro tarball now includes man pages, tests, and test data