124 lines
3.6 KiB
Markdown
124 lines
3.6 KiB
Markdown
[](https://travis-ci.org/rockdaboot/libpsl)
|
|
|
|
libpsl - C library to handle the Public Suffix List
|
|
===================================================
|
|
|
|
A "public suffix" is a domain name under which Internet users can directly register own names.
|
|
|
|
Browsers and other web clients can use it to
|
|
|
|
- avoid privacy-leaking "supercookies"
|
|
- avoid privacy-leaking "super domain" certificates ([see post from Jeffry Walton](https://lists.gnu.org/archive/html/bug-wget/2014-03/msg00093.html))
|
|
- 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 (libicu is used by psl2c if installed)
|
|
|
|
Find more information about the Publix Suffix List [here](https://publicsuffix.org/).
|
|
|
|
Download the Public Suffix List [here](https://hg.mozilla.org/mozilla-central/raw-file/tip/netwerk/dns/effective_tld_names.dat).
|
|
|
|
The DAFSA code has been taken from [Chromium Project](https://code.google.com/p/chromium/).
|
|
|
|
|
|
API Documentation
|
|
-----------------
|
|
|
|
You find the current API documentation [here](https://rockdaboot.github.io/libpsl).
|
|
|
|
|
|
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](https://en.wikipedia.org/wiki/Deterministic_acyclic_finite_state_automaton) 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 --input-format=psl 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.<br>
|
|
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](http://news.gmane.org/gmane.network.dns.libpsl.bugs)
|
|
|
|
[Mailing List](https://groups.google.com/forum/#!forum/libpsl-bugs)
|
|
|
|
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](https://groups.google.com/forum/#!forum/libpsl-bugs/join).
|