C library for the Public Suffix List
Go to file
Tim Rühsen e87d463d04 Remove NLS / gettext from library code 2018-10-13 22:37:00 +02:00
contrib Add script to build with MinGW 2018-10-05 20:49:21 +02:00
docs/libpsl fix spelling errors 2018-03-23 11:33:55 +00:00
fuzz fuzz: Skip the tests if fmemopen() is not found 2018-04-20 14:46:02 +02:00
include Use __has_declspec_attribute for shared builds 2018-10-07 11:32:45 +02:00
list@6f2b9e75ea Update to latest Public Suffix List 2018-10-07 21:15:07 +02:00
m4 Add m4/ax_check_compile_flag.m4 2017-07-27 11:55:29 +02:00
msvc Add NMake Makefiles for Visual Studio builds 2018-04-26 17:09:28 +08:00
po autoconf first version 2014-03-20 22:43:04 +01:00
src Remove NLS / gettext from library code 2018-10-13 22:37:00 +02:00
tests Make global vars static in test-is-public-all.c 2018-04-19 10:21:25 +02:00
tools psl tool: Fix possible crashes with printf %s, NULL 2018-07-04 09:37:25 +02:00
.dir-locals.el document indentation conventions for emacs users 2014-03-21 14:39:17 -04:00
.gitignore Add msvc/ autogen files to .gitignore 2018-04-26 19:27:15 +02:00
.gitmodules Add https://github.com/publicsuffix as git submodule 2015-07-14 13:25:42 +02:00
.travis.yml Fix and cleanup build 2018-04-30 15:14:17 +02:00
.travis_coveralls.sh Cleanup .travis_coveralls.sh 2017-07-27 11:07:00 +02:00
AUTHORS Add Daurnimator to AUTHORS 2016-11-06 16:22:52 +01:00
COPYING Update copyrights 2018-02-22 10:04:00 +01:00
LICENSE Update copyright years 2015-09-23 14:50:01 +02:00
Makefile.am Add NMake Makefiles for Visual Studio builds 2018-04-26 17:09:28 +08:00
NEWS Release V0.20.2 2018-04-26 20:18:39 +02:00
README inital commit 2014-03-20 17:17:24 +01:00
README.md Change download link of the PSL 2018-10-13 22:01:36 +02:00
autogen.sh Let autogen.sh work on Solaris and without gtkdocize 2016-01-02 13:01:19 +01:00
configure.ac Fix and cleanup build 2018-04-30 15:14:17 +02:00
libpsl.pc.in s/Publix/Public/ 2016-12-07 16:14:04 +08:00

README.md

Travis-CI Status Coverity Scan Coverage Status

Solaris OpenCSW Build Status Solaris amd64 Build Status Solaris i386 Build Status Solaris Sparc Build Status Solaris SparcV9

libpsl - C library to handle the Public Suffix List

A Public Suffix List is a collection of Top Level Domains (TLDs) suffixes. TLDs include Global Top Level Domains (gTLDs) like .com and .net; Country Top Level Domains (ccTLDs) like .de and .cn; and Brand Top Level Domains like .apple and .google. Brand TLDs allows users to register their own top level domain that exist at the same level as ICANN's gTLDs. Brand TLDs are sometimes referred to as Vanity Domains.

Browsers, web clients and other user agents can use a public suffix list to:

  • avoid privacy-leaking "supercookies"
  • avoid privacy-leaking "super domain" certificates (see post from Jeffry Walton)
  • domain highlighting parts of the domain in a user interface
  • sorting domain lists by site

Libpsl...

  • has built-in PSL data for fast access (DAWG/DAFSA reduces size from 180kB to ~32kB)
  • allows to load PSL data from files
  • checks if a given domain is a "public suffix"
  • provides immediate cookie domain verification
  • finds the longest public part of a given domain
  • finds the shortest private part of a given domain
  • works with international domains (UTF-8 and IDNA2008 Punycode)
  • is thread-safe
  • handles IDNA2008 UTS#46 (if libicu is available)

Find more information about the Public Suffix List here.

Download the Public Suffix List here.

The original DAFSA code is from the Chromium Project.

API Documentation

You find the current API documentation here.

Quick API example

#include <stdio.h>
#include <libpsl.h>

int main(int argc, char **argv)
{
	const char *domain = "www.example.com";
	const char *cookie_domain = ".com";
	const psl_ctx_t *psl = psl_builtin();
	int is_public, is_acceptable;

	is_public = psl_is_public_suffix(psl, domain);
	printf("%s %s a public suffix.\n", domain, is_public ? "is" : "is not");

	is_acceptable = psl_is_cookie_domain_acceptable(psl, domain, cookie_domain);
	printf("cookie domain '%s' %s acceptable for domain '%s'.\n",
		cookie_domain, is_acceptable ? "is" : "is not", domain);

	return 0;
}

Command Line Tool

Libpsl comes with a tool 'psl' that gives you access to most of the library API via command line.

$ psl --help

prints the usage.

Convert PSL into DAFSA

The DAFSA format is a compressed representation of strings. Here we use it to reduce the whole PSL to about 32k in size.

Generate psl.dafsa from list/public_suffix_list.dat

$ src/psl-make-dafsa --output-format=binary list/public_suffix_list.dat psl.dafsa

Test the result (example)

$ tools/psl --load-psl-file psl.dafsa aeroclub.aero

License

Libpsl is made available under the terms of the MIT license.
See the LICENSE file that accompanies this distribution for the full text of the license.

src/psl-make-dafsa and src/lookup_string_in_fixed_set.c are licensed under the term written in src/LICENSE.chromium.

Building from git

You should have python2.7+ installed.

Download project and prepare sources with

	git clone https://github.com/rockdaboot/libpsl
	./autogen.sh
	./configure
	make
	make check

Mailing List

Mailing List Archive

Mailing List

To join the mailing list send an email to

libpsl-bugs+subscribe@googlegroups.com

and follow the instructions provided by the answer mail.

Or click join.