mirror of
https://github.com/google/brotli.git
synced 2024-11-28 14:11:07 +00:00
106 lines
4.3 KiB
Markdown
106 lines
4.3 KiB
Markdown
<p align="center"><img src="https://brotli.org/brotli.svg" alt="Brotli" width="64"></p>
|
|
|
|
# SECURITY NOTE
|
|
|
|
Please consider updating brotli to version 1.0.9 (latest).
|
|
|
|
Version 1.0.9 contains a fix to "integer overflow" problem. This happens when "one-shot" decoding API is used (or input chunk for streaming API is not limited), input size (chunk size) is larger than 2GiB, and input contains uncompressed blocks. After the overflow happens, `memcpy` is invoked with a gigantic `num` value, that will likely cause the crash.
|
|
|
|
### Introduction
|
|
|
|
Brotli is a generic-purpose lossless compression algorithm that compresses data
|
|
using a combination of a modern variant of the LZ77 algorithm, Huffman coding
|
|
and 2nd order context modeling, with a compression ratio comparable to the best
|
|
currently available general-purpose compression methods. It is similar in speed
|
|
with deflate but offers more dense compression.
|
|
|
|
The specification of the Brotli Compressed Data Format is defined in [RFC 7932](https://tools.ietf.org/html/rfc7932).
|
|
|
|
Brotli is open-sourced under the MIT License, see the LICENSE file.
|
|
|
|
Brotli mailing list:
|
|
https://groups.google.com/forum/#!forum/brotli
|
|
|
|
|
|
[](https://oss-fuzz-build-logs.storage.googleapis.com/index.html#brotli)
|
|
|
|
### Build instructions
|
|
|
|
#### Vcpkg
|
|
|
|
You can download and install brotli using the [vcpkg](https://github.com/Microsoft/vcpkg/) dependency manager:
|
|
|
|
git clone https://github.com/Microsoft/vcpkg.git
|
|
cd vcpkg
|
|
./bootstrap-vcpkg.sh
|
|
./vcpkg integrate install
|
|
./vcpkg install brotli
|
|
|
|
The brotli port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
|
|
|
|
#### Autotools-style CMake
|
|
|
|
[configure-cmake](https://github.com/nemequ/configure-cmake) is an
|
|
autotools-style configure script for CMake-based projects (not supported on Windows).
|
|
|
|
The basic commands to build, test and install brotli are:
|
|
|
|
$ mkdir out && cd out
|
|
$ ../configure-cmake
|
|
$ make
|
|
$ make test
|
|
$ make install
|
|
|
|
By default, debug binaries are built. To generate "release" `Makefile` specify `--disable-debug` option to `configure-cmake`.
|
|
|
|
#### Bazel
|
|
|
|
See [Bazel](http://www.bazel.build/)
|
|
|
|
#### CMake
|
|
|
|
The basic commands to build and install brotli are:
|
|
|
|
$ mkdir out && cd out
|
|
$ cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=./installed ..
|
|
$ cmake --build . --config Release --target install
|
|
|
|
You can use other [CMake](https://cmake.org/) configuration.
|
|
|
|
#### Premake5
|
|
|
|
See [Premake5](https://premake.github.io/)
|
|
|
|
#### Python
|
|
|
|
To install the latest release of the Python module, run the following:
|
|
|
|
$ pip install brotli
|
|
|
|
To install the tip-of-the-tree version, run:
|
|
|
|
$ pip install --upgrade git+https://github.com/google/brotli
|
|
|
|
See the [Python readme](python/README.md) for more details on installing
|
|
from source, development, and testing.
|
|
|
|
### Benchmarks
|
|
* [Squash Compression Benchmark](https://quixdb.github.io/squash-benchmark/) / [Unstable Squash Compression Benchmark](https://quixdb.github.io/squash-benchmark/unstable/)
|
|
* [Large Text Compression Benchmark](http://mattmahoney.net/dc/text.html)
|
|
* [Lzturbo Benchmark](https://sites.google.com/site/powturbo/home/benchmark)
|
|
|
|
### Related projects
|
|
> **Disclaimer:** Brotli authors take no responsibility for the third party projects mentioned in this section.
|
|
|
|
Independent [decoder](https://github.com/madler/brotli) implementation by Mark Adler, based entirely on format specification.
|
|
|
|
JavaScript port of brotli [decoder](https://github.com/devongovett/brotli.js). Could be used directly via `npm install brotli`
|
|
|
|
Hand ported [decoder / encoder](https://github.com/dominikhlbg/BrotliHaxe) in haxe by Dominik Homberger. Output source code: JavaScript, PHP, Python, Java and C#
|
|
|
|
7Zip [plugin](https://github.com/mcmilk/7-Zip-Zstd)
|
|
|
|
Dart [native bindings](https://github.com/thosakwe/brotli)
|
|
|
|
Dart compression framework with [fast FFI-based Brotli implementation](https://pub.dev/documentation/es_compression/latest/brotli/brotli-library.html) with ready-to-use prebuilt binaries for Win/Linux/Mac
|