isabella232 / dnsparser

Simple C++ DNS payload parser

dnsparser - Simple DNS payload parser in C++

Intended for parsing DNS packet payload. Builds as a static library. See dnssniffer for an example of using it in an application.

• Does not need entire payload
• Does not assume payload is DNS
• Supports IPV4 / IPV6 Answer records.
• Not thread-safe... restrict DnsParser.parse to single thread.
• Speedup upto 30% by not tracking paths.
• Speedup upto 400% by ignoring CNAMEs all together.

Example Usage:

DnsParser *parser = DnsParserNew(myListener, isPathEnabled, ignoreCnames);
parser->parse((char *)data.data(), data.size());

Build

osx/linux: sh build.sh Windows: build.bat

Run Google unit tests

osx/linux: sh test.sh

Debug

On MacOS, use XCode to open .xcodeproj file placed in the platform/Darwin-x86_64/ dir after running build.sh.

On Windows, use Visual Studio to open the .sln file placed in platform/win32-msvc2012/ dir after running build.sh.

And, hey... there's always command-line lldb or gdb. 👍🏼

License

This code is licensed under the terms of the Apache 2 license.