Use DAWG/DAFSA format for builtin data
This data representation reduces the size of the PSL data drastically and still allows fast lookups.
This commit is contained in:
Tim Rühsen
parent
36139b601d
commit
0ca3741df6
1
AUTHORS
1
AUTHORS
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@ -15,3 +15,4 @@ Dagobert Michelsen (Fixed Solaris building)
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Christopher Meng (Fedora building)
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Jakub Čajka
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Giuseppe Scrivano
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Ryan Sleevi (Discussion, Requested DAFSA format and ICANN/PRIVATE support)
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@ -14,7 +14,7 @@ Browsers and other web clients can use it to
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Libpsl...
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- has built-in PSL data for fast access
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- has built-in PSL data for fast access (DAWG/DAFSA reduces size from 180kB to ~32kB)
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- allows to load PSL data from files
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- checks if a given domain is a "public suffix"
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- provides immediate cookie domain verification
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@ -28,6 +28,8 @@ Find more information about the Publix Suffix List [here](http://publicsuffix.or
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Download the Public Suffix List [here](https://hg.mozilla.org/mozilla-central/raw-file/tip/netwerk/dns/effective_tld_names.dat).
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The DAFSA code has been taken from [Chromium Project](https://code.google.com/p/chromium/).
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API Documentation
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-----------------
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@ -74,6 +76,8 @@ License
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Libpsl is made available under the terms of the MIT license.<br>
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See the LICENSE file that accompanies this distribution for the full text of the license.
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src/make_dafsa.py and src/lookup_string_in_fixed_set.c are licensed under the term written in
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src/LICENSE.chromium.
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Building from git
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-----------------
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@ -0,0 +1,30 @@
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* The following License is for the source code files
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make_dafsa.py and lookup_string_in_fixed_set.c.
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// Copyright 2015 The Chromium Authors. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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@ -1,12 +1,12 @@
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# suffixes.c must be created before psl.c is compiled
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BUILT_SOURCES = suffixes.c
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BUILT_SOURCES = suffixes_dafsa.c
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# suffixes.c is a built source that must be cleaned
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CLEANFILES = suffixes.c
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CLEANFILES = suffixes_dafsa.c
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lib_LTLIBRARIES = libpsl.la
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libpsl_la_SOURCES = psl.c
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libpsl_la_SOURCES = psl.c lookup_string_in_fixed_set.c
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libpsl_la_CPPFLAGS = -I$(top_srcdir)/include
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# include ABI version information
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libpsl_la_LDFLAGS = -version-info $(LIBPSL_SO_VERSION)
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@ -21,8 +21,8 @@ if WITH_LIBIDN
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endif
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noinst_PROGRAMS = psl2c
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psl2c_SOURCES = psl2c.c
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psl2c_CPPFLAGS = -I$(top_srcdir)/include
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psl2c_SOURCES = psl2c.c lookup_string_in_fixed_set.c
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psl2c_CPPFLAGS = -I$(top_srcdir)/include -DMAKE_DAFSA=\"$(top_srcdir)/src/make_dafsa.py\"
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if BUILTIN_GENERATOR_LIBICU
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psl2c_LDADD = -licuuc
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endif
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@ -33,8 +33,9 @@ if BUILTIN_GENERATOR_LIBIDN
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psl2c_LDADD = @LTLIBICONV@ -lidn -lunistring
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endif
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# Build rule for suffix.c
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# Build rule for suffix_dafsa.c
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# PSL_FILE can be set by ./configure --with-psl-file=[PATH]
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suffixes.c: $(PSL_FILE) psl2c$(EXEEXT)
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./psl2c$(EXEEXT) "$(PSL_FILE)" suffixes.c
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./psl2c$(EXEEXT) --dafsa "$(PSL_FILE)" suffixes_dafsa.c
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suffixes_dafsa.c: $(PSL_FILE) psl2c$(EXEEXT)
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./psl2c$(EXEEXT) "$(PSL_FILE)" suffixes_dafsa.c
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EXTRA_DIST = make_dafsa.py LICENSE.chromium
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@ -0,0 +1,204 @@
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/* Copyright 2015 The Chromium Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE.chromium file.
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*
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* Converted to C89 2015 by Tim Rühsen
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*/
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#include <stddef.h>
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#if defined(__GNUC__) && defined(__GNUC_MINOR__)
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# define _GCC_VERSION_AT_LEAST(major, minor) ((__GNUC__ > (major)) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
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#else
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# define _GCC_VERSION_AT_LEAST(major, minor) 0
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#endif
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#if _GCC_VERSION_AT_LEAST(4,0)
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# define _HIDDEN __attribute__ ((visibility ("hidden")))
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#else
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# define _HIDDEN
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#endif
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#define CHECK_LT(a, b) if ((a) >= b) return 0
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/*
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* Read next offset from pos.
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* Returns true if an offset could be read, false otherwise.
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*/
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static int GetNextOffset(const unsigned char** pos,
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const unsigned char* end,
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const unsigned char** offset)
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{
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size_t bytes_consumed;
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if (*pos == end)
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return 0;
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/* When reading an offset the byte array must always contain at least
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* three more bytes to consume. First the offset to read, then a node
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* to skip over and finally a destination node. No object can be smaller
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* than one byte. */
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CHECK_LT(*pos + 2, end);
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switch (**pos & 0x60) {
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case 0x60: /* Read three byte offset */
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*offset += (((*pos)[0] & 0x1F) << 16) | ((*pos)[1] << 8) | (*pos)[2];
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bytes_consumed = 3;
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break;
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case 0x40: /* Read two byte offset */
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*offset += (((*pos)[0] & 0x1F) << 8) | (*pos)[1];
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bytes_consumed = 2;
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break;
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default:
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*offset += (*pos)[0] & 0x3F;
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bytes_consumed = 1;
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}
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if ((**pos & 0x80) != 0) {
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*pos = end;
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} else {
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*pos += bytes_consumed;
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}
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return 1;
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}
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/*
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* Check if byte at offset is last in label.
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*/
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static int IsEOL(const unsigned char* offset, const unsigned char* end)
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{
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CHECK_LT(offset, end);
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return(*offset & 0x80) != 0;
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}
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/*
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* Check if byte at offset matches first character in key.
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* This version matches characters not last in label.
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*/
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static int IsMatch(const unsigned char* offset,
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const unsigned char* end,
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const char* key)
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{
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CHECK_LT(offset, end);
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return *offset == *key;
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}
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/*
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* Check if byte at offset matches first character in key.
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* This version matches characters last in label.
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*/
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static int IsEndCharMatch(const unsigned char* offset,
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const unsigned char* end,
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const char* key)
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{
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CHECK_LT(offset, end);
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return *offset == (*key | 0x80);
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}
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/*
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* Read return value at offset.
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* Returns true if a return value could be read, false otherwise.
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*/
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static int GetReturnValue(const unsigned char* offset,
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const unsigned char* end,
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int* return_value)
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{
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CHECK_LT(offset, end);
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if ((*offset & 0xE0) == 0x80) {
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*return_value = *offset & 0x0F;
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return 1;
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}
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return 0;
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}
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/*
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* Looks up the string |key| with length |key_length| in a fixed set of
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* strings. The set of strings must be known at compile time. It is converted to
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* a graph structure named a DAFSA (Deterministic Acyclic Finite State
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* Automaton) by the script make_dafsa.py during compilation. This permits
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* efficient (in time and space) lookup. The graph generated by make_dafsa.py
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* takes the form of a constant byte array which should be supplied via the
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* |graph| and |length| parameters. The return value is kDafsaNotFound,
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* kDafsaFound, or a bitmap consisting of one or more of kDafsaExceptionRule,
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* kDafsaWildcardRule and kDafsaPrivateRule ORed together.
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*
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* Lookup a domain key in a byte array generated by make_dafsa.py.
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*/
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/* prototype to skip warning with -Wmissing-prototypes */
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int _HIDDEN LookupStringInFixedSet(const unsigned char*, size_t,const char*, size_t);
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int _HIDDEN LookupStringInFixedSet(const unsigned char* graph,
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size_t length,
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const char* key,
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size_t key_length)
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{
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const unsigned char* pos = graph;
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const unsigned char* end = graph + length;
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const unsigned char* offset = pos;
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const char* key_end = key + key_length;
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while (GetNextOffset(&pos, end, &offset)) {
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/*char <char>+ end_char offsets
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* char <char>+ return value
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* char end_char offsets
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* char return value
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* end_char offsets
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* return_value
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*/
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int did_consume = 0;
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if (key != key_end && !IsEOL(offset, end)) {
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/* Leading <char> is not a match. Don't dive into this child */
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if (!IsMatch(offset, end, key))
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continue;
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did_consume = 1;
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++offset;
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++key;
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/* Possible matches at this point:
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* <char>+ end_char offsets
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* <char>+ return value
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* end_char offsets
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* return value
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*/
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/* Remove all remaining <char> nodes possible */
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while (!IsEOL(offset, end) && key != key_end) {
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if (!IsMatch(offset, end, key))
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return -1;
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++key;
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++offset;
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}
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}
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/* Possible matches at this point:
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* end_char offsets
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* return_value
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* If one or more <char> elements were consumed, a failure
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* to match is terminal. Otherwise, try the next node.
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*/
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if (key == key_end) {
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int return_value;
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if (GetReturnValue(offset, end, &return_value))
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return return_value;
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/* The DAFSA guarantees that if the first char is a match, all
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* remaining char elements MUST match if the key is truly present.
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*/
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if (did_consume)
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return -1;
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continue;
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}
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if (!IsEndCharMatch(offset, end, key)) {
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if (did_consume)
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return -1; /* Unexpected */
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continue;
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}
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++key;
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pos = ++offset; /* Dive into child */
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}
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return -1; /* No match */
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}
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@ -1,7 +1,7 @@
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#!/usr/bin/env python
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# Copyright 2014 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# found in the LICENSE.chromium file.
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"""
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A Deterministic acyclic finite state automaton (DAFSA) is a compact
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@ -421,7 +421,7 @@ def to_cxx(data):
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text += 'The byte array encodes effective tld names. See make_dafsa.py for'
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text += ' documentation.'
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text += '*/\n\n'
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text += 'const unsigned char kDafsa[%s] = {\n' % len(data)
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text += 'static const unsigned char kDafsa[%s] = {\n' % len(data)
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for i in range(0, len(data), 12):
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text += ' '
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text += ', '.join('0x%02x' % byte for byte in data[i:i + 12])
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@ -450,7 +450,7 @@ def parse_gperf(infile):
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raise InputError('Expected "domainname, <digit>", found "%s"' % line)
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# Technically the DAFSA format could support return values in range [0-31],
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# but the values below are the only with a defined meaning.
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if line[-1] not in '01245':
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if line[-1] not in '0123456789ABCDEF':
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raise InputError('Expected value to be one of {0,1,2,4,5}, found "%s"' %
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line[-1])
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return [line[:-3] + line[-1] for line in lines]
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486
src/psl.c
486
src/psl.c
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@ -32,6 +32,18 @@
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# include <config.h>
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#endif
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#if defined(__GNUC__) && defined(__GNUC_MINOR__)
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# define _GCC_VERSION_AT_LEAST(major, minor) ((__GNUC__ > (major)) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
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#else
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# define _GCC_VERSION_AT_LEAST(major, minor) 0
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#endif
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#if _GCC_VERSION_AT_LEAST(2,95)
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# define _UNUSED __attribute__ ((unused))
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#else
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# define _UNUSED
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#endif
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/* if this file is included by psl2c, redefine to use requested library for builtin data */
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#ifdef _LIBPSL_INCLUDED_BY_PSL2C
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# undef WITH_LIBICU
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@ -167,10 +179,10 @@ struct _psl_ctx_st {
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/* include the PSL data compiled by 'psl2c' */
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#ifndef _LIBPSL_INCLUDED_BY_PSL2C
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# include "suffixes.c"
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# include "suffixes_dafsa.c"
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#else
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/* if this source file is included by psl2c.c, provide empty builtin data */
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static _psl_entry_t suffixes[1];
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static const unsigned char kDafsa[1];
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static time_t _psl_file_time;
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static time_t _psl_compile_time;
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static int _psl_nsuffixes;
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@ -313,20 +325,196 @@ static int _suffix_init(_psl_entry_t *suffix, const char *rule, size_t length)
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return 0;
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}
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static inline int _isspace_ascii(const char c)
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{
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return c == ' ' || c == '\t' || c == '\r' || c == '\n';
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}
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static int _str_is_ascii(const char *s)
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{
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while (*s && *((unsigned char *)s) < 128) s++;
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return !*s;
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}
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#if defined(WITH_LIBIDN)
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/*
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* Work around a libidn <= 1.30 vulnerability.
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*
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* The function checks for a valid UTF-8 character sequence before
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* passing it to idna_to_ascii_8z().
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*
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* [1] http://lists.gnu.org/archive/html/help-libidn/2015-05/msg00002.html
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* [2] https://lists.gnu.org/archive/html/bug-wget/2015-06/msg00002.html
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* [3] http://curl.haxx.se/mail/lib-2015-06/0143.html
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*/
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static int _utf8_is_valid(const char *utf8)
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{
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const unsigned char *s = (const unsigned char *) utf8;
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while (*s) {
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if ((*s & 0x80) == 0) /* 0xxxxxxx ASCII char */
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s++;
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else if ((*s & 0xE0) == 0xC0) /* 110xxxxx 10xxxxxx */ {
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if ((s[1] & 0xC0) != 0x80)
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return 0;
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s += 2;
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} else if ((*s & 0xF0) == 0xE0) /* 1110xxxx 10xxxxxx 10xxxxxx */ {
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if ((s[1] & 0xC0) != 0x80 || (s[2] & 0xC0) != 0x80)
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return 0;
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s += 3;
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} else if ((*s & 0xF8) == 0xF0) /* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ {
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if ((s[1] & 0xC0) != 0x80 || (s[2] & 0xC0) != 0x80 || (s[3] & 0xC0) != 0x80)
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return 0;
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s += 4;
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} else
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return 0;
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}
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return 1;
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}
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#endif
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typedef void *_psl_idna_t;
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static _psl_idna_t *_psl_idna_open(void)
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{
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#if defined(WITH_LIBICU)
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UErrorCode status = 0;
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return (void *)uidna_openUTS46(UIDNA_USE_STD3_RULES, &status);
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#endif
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return NULL;
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}
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static void _psl_idna_close(_psl_idna_t *idna _UNUSED)
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{
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#if defined(WITH_LIBICU)
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if (idna)
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uidna_close((UIDNA *)idna);
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#endif
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}
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|
||||
static int _psl_idna_toASCII(_psl_idna_t *idna _UNUSED, const char *utf8, char **ascii)
|
||||
{
|
||||
int ret = -1;
|
||||
|
||||
#if defined(WITH_LIBICU)
|
||||
/* IDNA2008 UTS#46 punycode conversion */
|
||||
if (idna) {
|
||||
char lookupname[128] = "";
|
||||
UErrorCode status = 0;
|
||||
UIDNAInfo info = UIDNA_INFO_INITIALIZER;
|
||||
UChar utf16_dst[128], utf16_src[128];
|
||||
int32_t utf16_src_length;
|
||||
|
||||
u_strFromUTF8(utf16_src, sizeof(utf16_src)/sizeof(utf16_src[0]), &utf16_src_length, utf8, -1, &status);
|
||||
if (U_SUCCESS(status)) {
|
||||
int32_t dst_length = uidna_nameToASCII((UIDNA *)idna, utf16_src, utf16_src_length, utf16_dst, sizeof(utf16_dst)/sizeof(utf16_dst[0]), &info, &status);
|
||||
if (U_SUCCESS(status)) {
|
||||
u_strToUTF8(lookupname, sizeof(lookupname), NULL, utf16_dst, dst_length, &status);
|
||||
if (U_SUCCESS(status)) {
|
||||
if (ascii)
|
||||
*ascii = strdup(lookupname);
|
||||
ret = 0;
|
||||
} /* else
|
||||
fprintf(stderr, "Failed to convert UTF-16 to UTF-8 (status %d)\n", status); */
|
||||
} /* else
|
||||
fprintf(stderr, "Failed to convert to ASCII (status %d)\n", status); */
|
||||
} /* else
|
||||
fprintf(stderr, "Failed to convert UTF-8 to UTF-16 (status %d)\n", status); */
|
||||
}
|
||||
#elif defined(WITH_LIBIDN2)
|
||||
int rc;
|
||||
uint8_t *lower, resbuf[256];
|
||||
size_t len = sizeof(resbuf) - 1; /* leave space for additional \0 byte */
|
||||
|
||||
/* we need a conversion to lowercase */
|
||||
lower = u8_tolower((uint8_t *)utf8, u8_strlen((uint8_t *)utf8), 0, UNINORM_NFKC, resbuf, &len);
|
||||
if (!lower) {
|
||||
/* fprintf(stderr, "u8_tolower(%s) failed (%d)\n", utf8, errno); */
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* u8_tolower() does not terminate the result string */
|
||||
if (lower == resbuf) {
|
||||
lower[len]=0;
|
||||
} else {
|
||||
uint8_t *tmp = lower;
|
||||
lower = (uint8_t *)strndup((char *)lower, len);
|
||||
free(tmp);
|
||||
}
|
||||
|
||||
if ((rc = idn2_lookup_u8(lower, (uint8_t **)ascii, 0)) == IDN2_OK) {
|
||||
ret = 0;
|
||||
} /* else
|
||||
fprintf(stderr, "toASCII(%s) failed (%d): %s\n", lower, rc, idn2_strerror(rc)); */
|
||||
|
||||
if (lower != resbuf)
|
||||
free(lower);
|
||||
#elif defined(WITH_LIBIDN)
|
||||
int rc;
|
||||
|
||||
if (!_utf8_is_valid(utf8)) {
|
||||
/* fprintf(_(stderr, "Invalid UTF-8 sequence not converted: '%s'\n"), utf8); */
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* idna_to_ascii_8z() automatically converts UTF-8 to lowercase */
|
||||
|
||||
if ((rc = idna_to_ascii_8z(utf8, ascii, IDNA_USE_STD3_ASCII_RULES)) == IDNA_SUCCESS) {
|
||||
ret = 0;
|
||||
} /* else
|
||||
fprintf(_(stderr, "toASCII failed (%d): %s\n"), rc, idna_strerror(rc)); */
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void _add_punycode_if_needed(_psl_idna_t *idna, _psl_vector_t *v, _psl_entry_t *e)
|
||||
{
|
||||
char *lookupname;
|
||||
|
||||
if (_str_is_ascii(e->label_buf))
|
||||
return;
|
||||
|
||||
if (_psl_idna_toASCII(idna, e->label_buf, &lookupname) == 0) {
|
||||
if (strcmp(e->label_buf, lookupname)) {
|
||||
_psl_entry_t suffix, *suffixp;
|
||||
|
||||
/* fprintf(stderr, "toASCII '%s' -> '%s'\n", e->label_buf, lookupname); */
|
||||
_suffix_init(&suffix, lookupname, strlen(lookupname));
|
||||
suffix.flags = e->flags;
|
||||
suffixp = _vector_get(v, _vector_add(v, &suffix));
|
||||
suffixp->label = suffixp->label_buf; /* set label to changed address */
|
||||
} /* else ignore */
|
||||
|
||||
free(lookupname);
|
||||
}
|
||||
}
|
||||
|
||||
/* prototype */
|
||||
int LookupStringInFixedSet(const unsigned char* graph, size_t length, const char* key, size_t key_length);
|
||||
|
||||
static int _psl_is_public_suffix(const psl_ctx_t *psl, const char *domain, int type)
|
||||
{
|
||||
_psl_entry_t suffix, *rule;
|
||||
_psl_entry_t suffix;
|
||||
const char *p;
|
||||
int builtin;
|
||||
char *punycode = NULL;
|
||||
int need_conversion = 0;
|
||||
|
||||
/* this function should be called without leading dots, just make sure */
|
||||
suffix.label = domain + (*domain == '.');
|
||||
suffix.length = strlen(suffix.label);
|
||||
if (*domain == '.')
|
||||
domain++;
|
||||
|
||||
suffix.nlabels = 1;
|
||||
|
||||
for (p = suffix.label; *p; p++)
|
||||
for (p = domain; *p; p++) {
|
||||
if (*p == '.')
|
||||
suffix.nlabels++;
|
||||
else if (*((unsigned char *)p) < 128)
|
||||
need_conversion = 1; /* in case domain is non-ascii we need a toASCII conversion */
|
||||
}
|
||||
|
||||
if (suffix.nlabels == 1) {
|
||||
/* TLD, this is the prevailing '*' match.
|
||||
|
|
@ -335,61 +523,111 @@ static int _psl_is_public_suffix(const psl_ctx_t *psl, const char *domain, int t
|
|||
return 1;
|
||||
}
|
||||
|
||||
/* if domain has enough labels, it is public */
|
||||
builtin = (psl == &_builtin_psl);
|
||||
if (need_conversion) {
|
||||
_psl_idna_t *idna = _psl_idna_open();
|
||||
|
||||
if (builtin)
|
||||
rule = &suffixes[0];
|
||||
else
|
||||
rule = _vector_get(psl->suffixes, 0);
|
||||
if (_psl_idna_toASCII(idna, domain, &punycode) == 0) {
|
||||
suffix.label = punycode;
|
||||
suffix.length = strlen(punycode);
|
||||
} else {
|
||||
/* fallback */
|
||||
suffix.label = domain;
|
||||
suffix.length = p - suffix.label;
|
||||
}
|
||||
|
||||
_psl_idna_close(idna);
|
||||
} else {
|
||||
suffix.label = domain;
|
||||
suffix.length = p - suffix.label;
|
||||
}
|
||||
|
||||
if (psl == &_builtin_psl) {
|
||||
int rc = LookupStringInFixedSet(kDafsa, sizeof(kDafsa), suffix.label, suffix.length);
|
||||
if (rc != -1) {
|
||||
/* check for correct rule type */
|
||||
if (type == PSL_TYPE_ICANN && !(rc & _PSL_FLAG_ICANN))
|
||||
goto suffix_no;
|
||||
else if (type == PSL_TYPE_PRIVATE && !(rc & _PSL_FLAG_PRIVATE))
|
||||
goto suffix_no;
|
||||
|
||||
if (rc & _PSL_FLAG_EXCEPTION)
|
||||
goto suffix_no;
|
||||
|
||||
/* wildcard *.foo.bar implicitly make foo.bar a public suffix */
|
||||
/* definitely a match, no matter if the found rule is a wildcard or not */
|
||||
goto suffix_yes;
|
||||
}
|
||||
if ((suffix.label = strchr(suffix.label, '.'))) {
|
||||
suffix.label++;
|
||||
suffix.length = strlen(suffix.label);
|
||||
suffix.nlabels--;
|
||||
|
||||
rc = LookupStringInFixedSet(kDafsa, sizeof(kDafsa), suffix.label, suffix.length);
|
||||
if (rc != -1) {
|
||||
/* check for correct rule type */
|
||||
if (type == PSL_TYPE_ICANN && !(rc & _PSL_FLAG_ICANN))
|
||||
goto suffix_no;
|
||||
else if (type == PSL_TYPE_PRIVATE && !(rc & _PSL_FLAG_PRIVATE))
|
||||
goto suffix_no;
|
||||
|
||||
if (rc & _PSL_FLAG_WILDCARD)
|
||||
goto suffix_yes;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
_psl_entry_t *rule = _vector_get(psl->suffixes, 0);
|
||||
|
||||
if (!rule || rule->nlabels < suffix.nlabels - 1)
|
||||
return 0;
|
||||
|
||||
if (rule == &suffixes[0])
|
||||
rule = bsearch(&suffix, suffixes, countof(suffixes), sizeof(suffixes[0]), (int(*)(const void *, const void *))_suffix_compare);
|
||||
else
|
||||
rule = _vector_get(psl->suffixes, _vector_find(psl->suffixes, &suffix));
|
||||
|
||||
if (rule) {
|
||||
/* check for correct rule type */
|
||||
if (type == PSL_TYPE_ICANN && !(rule->flags & _PSL_FLAG_ICANN))
|
||||
return 0;
|
||||
goto suffix_no;
|
||||
else if (type == PSL_TYPE_PRIVATE && !(rule->flags & _PSL_FLAG_PRIVATE))
|
||||
return 0;
|
||||
goto suffix_no;
|
||||
|
||||
/* definitely a match, no matter if the found rule is a wildcard or not */
|
||||
if (rule->flags & _PSL_FLAG_EXCEPTION)
|
||||
return 0;
|
||||
if (rule->flags & _PSL_FLAG_PLAIN)
|
||||
return 1;
|
||||
goto suffix_no;
|
||||
|
||||
/* wildcard *.foo.bar implicitly make foo.bar a public suffix */
|
||||
/* definitely a match, no matter if the found rule is a wildcard or not */
|
||||
goto suffix_yes;
|
||||
}
|
||||
|
||||
if ((suffix.label = strchr(suffix.label, '.'))) {
|
||||
int pos = rule - suffixes;
|
||||
int pos;
|
||||
|
||||
suffix.label++;
|
||||
suffix.length = strlen(suffix.label);
|
||||
suffix.nlabels--;
|
||||
|
||||
if (builtin)
|
||||
rule = bsearch(&suffix, suffixes, countof(suffixes), sizeof(suffixes[0]), (int(*)(const void *, const void *))_suffix_compare);
|
||||
else
|
||||
rule = _vector_get(psl->suffixes, (pos = _vector_find(psl->suffixes, &suffix)));
|
||||
|
||||
if (rule) {
|
||||
/* check for correct rule type */
|
||||
if (type == PSL_TYPE_ICANN && !(rule->flags & _PSL_FLAG_ICANN))
|
||||
return 0;
|
||||
goto suffix_no;
|
||||
else if (type == PSL_TYPE_PRIVATE && !(rule->flags & _PSL_FLAG_PRIVATE))
|
||||
goto suffix_no;
|
||||
|
||||
if (rule->flags & _PSL_FLAG_WILDCARD)
|
||||
goto suffix_yes;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
suffix_no:
|
||||
if (punycode)
|
||||
free(punycode);
|
||||
return 0;
|
||||
|
||||
if ((rule->flags & _PSL_FLAG_WILDCARD))
|
||||
suffix_yes:
|
||||
if (punycode)
|
||||
free(punycode);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -531,167 +769,6 @@ const char *psl_registrable_domain(const psl_ctx_t *psl, const char *domain)
|
|||
return regdom;
|
||||
}
|
||||
|
||||
static inline int _isspace_ascii(const char c)
|
||||
{
|
||||
return c == ' ' || c == '\t' || c == '\r' || c == '\n';
|
||||
}
|
||||
|
||||
static int _str_is_ascii(const char *s)
|
||||
{
|
||||
while (*s && *((unsigned char *)s) < 128) s++;
|
||||
|
||||
return !*s;
|
||||
}
|
||||
|
||||
#if defined(WITH_LIBIDN)
|
||||
/*
|
||||
* Work around a libidn <= 1.30 vulnerability.
|
||||
*
|
||||
* The function checks for a valid UTF-8 character sequence before
|
||||
* passing it to idna_to_ascii_8z().
|
||||
*
|
||||
* [1] http://lists.gnu.org/archive/html/help-libidn/2015-05/msg00002.html
|
||||
* [2] https://lists.gnu.org/archive/html/bug-wget/2015-06/msg00002.html
|
||||
* [3] http://curl.haxx.se/mail/lib-2015-06/0143.html
|
||||
*/
|
||||
static int _utf8_is_valid(const char *utf8)
|
||||
{
|
||||
const unsigned char *s = (const unsigned char *) utf8;
|
||||
|
||||
while (*s) {
|
||||
if ((*s & 0x80) == 0) /* 0xxxxxxx ASCII char */
|
||||
s++;
|
||||
else if ((*s & 0xE0) == 0xC0) /* 110xxxxx 10xxxxxx */ {
|
||||
if ((s[1] & 0xC0) != 0x80)
|
||||
return 0;
|
||||
s += 2;
|
||||
} else if ((*s & 0xF0) == 0xE0) /* 1110xxxx 10xxxxxx 10xxxxxx */ {
|
||||
if ((s[1] & 0xC0) != 0x80 || (s[2] & 0xC0) != 0x80)
|
||||
return 0;
|
||||
s += 3;
|
||||
} else if ((*s & 0xF8) == 0xF0) /* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ {
|
||||
if ((s[1] & 0xC0) != 0x80 || (s[2] & 0xC0) != 0x80 || (s[3] & 0xC0) != 0x80)
|
||||
return 0;
|
||||
s += 4;
|
||||
} else
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(WITH_LIBICU)
|
||||
static void _add_punycode_if_needed(UIDNA *idna, _psl_vector_t *v, _psl_entry_t *e)
|
||||
{
|
||||
if (_str_is_ascii(e->label_buf))
|
||||
return;
|
||||
|
||||
/* IDNA2008 UTS#46 punycode conversion */
|
||||
if (idna) {
|
||||
char lookupname[128] = "";
|
||||
UErrorCode status = 0;
|
||||
UIDNAInfo info = UIDNA_INFO_INITIALIZER;
|
||||
UChar utf16_dst[128], utf16_src[128];
|
||||
int32_t utf16_src_length;
|
||||
|
||||
u_strFromUTF8(utf16_src, sizeof(utf16_src)/sizeof(utf16_src[0]), &utf16_src_length, e->label_buf, -1, &status);
|
||||
if (U_SUCCESS(status)) {
|
||||
int32_t dst_length = uidna_nameToASCII(idna, utf16_src, utf16_src_length, utf16_dst, sizeof(utf16_dst)/sizeof(utf16_dst[0]), &info, &status);
|
||||
if (U_SUCCESS(status)) {
|
||||
u_strToUTF8(lookupname, sizeof(lookupname), NULL, utf16_dst, dst_length, &status);
|
||||
if (U_SUCCESS(status)) {
|
||||
if (strcmp(e->label_buf, lookupname)) {
|
||||
_psl_entry_t suffix, *suffixp;
|
||||
|
||||
/* fprintf(stderr, "libicu '%s' -> '%s'\n", e->label_buf, lookupname); */
|
||||
_suffix_init(&suffix, lookupname, strlen(lookupname));
|
||||
suffix.flags = e->flags;
|
||||
suffixp = _vector_get(v, _vector_add(v, &suffix));
|
||||
suffixp->label = suffixp->label_buf; /* set label to changed address */
|
||||
} /* else ignore */
|
||||
} /* else
|
||||
fprintf(stderr, "Failed to convert UTF-16 to UTF-8 (status %d)\n", status); */
|
||||
} /* else
|
||||
fprintf(stderr, "Failed to convert to ASCII (status %d)\n", status); */
|
||||
} /* else
|
||||
fprintf(stderr, "Failed to convert UTF-8 to UTF-16 (status %d)\n", status); */
|
||||
}
|
||||
}
|
||||
#elif defined(WITH_LIBIDN2)
|
||||
static void _add_punycode_if_needed(_psl_vector_t *v, _psl_entry_t *e)
|
||||
{
|
||||
char *lookupname = NULL;
|
||||
int rc;
|
||||
uint8_t *lower, resbuf[256];
|
||||
size_t len = sizeof(resbuf) - 1; /* leave space for additional \0 byte */
|
||||
|
||||
if (_str_is_ascii(e->label_buf))
|
||||
return;
|
||||
|
||||
/* we need a conversion to lowercase */
|
||||
lower = u8_tolower((uint8_t *)e->label_buf, u8_strlen((uint8_t *)e->label_buf), 0, UNINORM_NFKC, resbuf, &len);
|
||||
if (!lower) {
|
||||
/* fprintf(stderr, "u8_tolower(%s) failed (%d)\n", e->label_buf, errno); */
|
||||
return;
|
||||
}
|
||||
|
||||
/* u8_tolower() does not terminate the result string */
|
||||
if (lower == resbuf) {
|
||||
lower[len]=0;
|
||||
} else {
|
||||
uint8_t *tmp = lower;
|
||||
lower = (uint8_t *)strndup((char *)lower, len);
|
||||
free(tmp);
|
||||
}
|
||||
|
||||
if ((rc = idn2_lookup_u8(lower, (uint8_t **)&lookupname, 0)) == IDN2_OK) {
|
||||
if (strcmp(e->label_buf, lookupname)) {
|
||||
_psl_entry_t suffix, *suffixp;
|
||||
|
||||
/* fprintf(stderr, "libidn '%s' -> '%s'\n", e->label_buf, lookupname); */
|
||||
_suffix_init(&suffix, lookupname, strlen(lookupname));
|
||||
suffix.flags = e->flags;
|
||||
suffixp = _vector_get(v, _vector_add(v, &suffix));
|
||||
suffixp->label = suffixp->label_buf; /* set label to changed address */
|
||||
} /* else ignore */
|
||||
} /* else
|
||||
fprintf(stderr, "toASCII(%s) failed (%d): %s\n", lower, rc, idn2_strerror(rc)); */
|
||||
|
||||
if (lower != resbuf)
|
||||
free(lower);
|
||||
}
|
||||
#elif defined(WITH_LIBIDN)
|
||||
static void _add_punycode_if_needed(_psl_vector_t *v, _psl_entry_t *e)
|
||||
{
|
||||
char *lookupname = NULL;
|
||||
int rc;
|
||||
|
||||
if (_str_is_ascii(e->label_buf))
|
||||
return;
|
||||
|
||||
if (!_utf8_is_valid(e->label_buf)) {
|
||||
/* fprintf(_(stderr, "Invalid UTF-8 sequence not converted: '%s'\n"), e->label_buf); */
|
||||
return;
|
||||
}
|
||||
|
||||
/* idna_to_ascii_8z() automatically converts UTF-8 to lowercase */
|
||||
|
||||
if ((rc = idna_to_ascii_8z(e->label_buf, &lookupname, IDNA_USE_STD3_ASCII_RULES)) == IDNA_SUCCESS) {
|
||||
if (strcmp(e->label_buf, lookupname)) {
|
||||
_psl_entry_t suffix, *suffixp;
|
||||
|
||||
/* fprintf(stderr, "libidn '%s' -> '%s'\n", e->label_buf, lookupname); */
|
||||
_suffix_init(&suffix, lookupname, strlen(lookupname));
|
||||
suffix.flags = e->flags;
|
||||
suffixp = _vector_get(v, _vector_add(v, &suffix));
|
||||
suffixp->label = suffixp->label_buf; /* set label to changed address */
|
||||
} /* else ignore */
|
||||
} /* else
|
||||
fprintf(_(stderr, "toASCII failed (%d): %s\n"), rc, idna_strerror(rc)); */
|
||||
}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* psl_load_file:
|
||||
* @fname: Name of PSL file
|
||||
|
|
@ -740,10 +817,7 @@ psl_ctx_t *psl_load_fp(FILE *fp)
|
|||
_psl_entry_t suffix, *suffixp;
|
||||
char buf[256], *linep, *p;
|
||||
int type = 0;
|
||||
#ifdef WITH_LIBICU
|
||||
UIDNA *idna;
|
||||
UErrorCode status = 0;
|
||||
#endif
|
||||
_psl_idna_t *idna;
|
||||
|
||||
if (!fp)
|
||||
return NULL;
|
||||
|
|
@ -751,9 +825,7 @@ psl_ctx_t *psl_load_fp(FILE *fp)
|
|||
if (!(psl = calloc(1, sizeof(psl_ctx_t))))
|
||||
return NULL;
|
||||
|
||||
#ifdef WITH_LIBICU
|
||||
idna = uidna_openUTS46(UIDNA_USE_STD3_RULES, &status);
|
||||
#endif
|
||||
idna = _psl_idna_open();
|
||||
|
||||
/*
|
||||
* as of 02.11.2012, the list at http://publicsuffix.org/list/ contains ~6000 rules and 40 exceptions.
|
||||
|
|
@ -794,7 +866,7 @@ psl_ctx_t *psl_load_fp(FILE *fp)
|
|||
continue;
|
||||
}
|
||||
p++;
|
||||
/* wildcard *.foo.bar implicitely make foo.bar a public suffix */
|
||||
/* wildcard *.foo.bar implicitly make foo.bar a public suffix */
|
||||
suffix.flags = _PSL_FLAG_WILDCARD | _PSL_FLAG_PLAIN | type;
|
||||
psl->nwildcards++;
|
||||
psl->nsuffixes++;
|
||||
|
|
@ -829,20 +901,14 @@ psl_ctx_t *psl_load_fp(FILE *fp)
|
|||
}
|
||||
|
||||
suffixp->label = suffixp->label_buf; /* set label to changed address */
|
||||
#ifdef WITH_LIBICU
|
||||
|
||||
_add_punycode_if_needed(idna, psl->suffixes, suffixp);
|
||||
#elif defined(WITH_LIBIDN2) || defined(WITH_LIBIDN)
|
||||
_add_punycode_if_needed(psl->suffixes, suffixp);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
_vector_sort(psl->suffixes);
|
||||
|
||||
#ifdef WITH_LIBICU
|
||||
if (idna)
|
||||
uidna_close(idna);
|
||||
#endif
|
||||
_psl_idna_close(idna);
|
||||
|
||||
return psl;
|
||||
}
|
||||
|
|
@ -1184,7 +1250,7 @@ int psl_is_cookie_domain_acceptable(const psl_ctx_t *psl, const char *hostname,
|
|||
*
|
||||
* Since: 0.4
|
||||
*/
|
||||
psl_error_t psl_str_to_utf8lower(const char *str, const char *encoding, const char *locale, char **lower)
|
||||
psl_error_t psl_str_to_utf8lower(const char *str, const char *encoding, const char *locale _UNUSED, char **lower)
|
||||
{
|
||||
int ret = PSL_ERR_INVALID_ARG;
|
||||
|
||||
|
|
|
|||
53
src/psl2c.c
53
src/psl2c.c
|
|
@ -128,39 +128,6 @@ static int _check_psl(const psl_ctx_t *psl)
|
|||
}
|
||||
#endif
|
||||
|
||||
static void _print_psl_entries(FILE *fpout, const _psl_vector_t *v, const char *varname)
|
||||
{
|
||||
int it;
|
||||
|
||||
#ifdef BUILTIN_GENERATOR_LIBICU
|
||||
do {
|
||||
UVersionInfo version_info;
|
||||
char version[U_MAX_VERSION_STRING_LENGTH];
|
||||
|
||||
u_getVersion(version_info);
|
||||
u_versionToString(version_info, version);
|
||||
fprintf(fpout, "/* automatically generated by psl2c (punycode generated with libicu/%s) */\n", version);
|
||||
} while (0);
|
||||
#elif defined(BUILTIN_GENERATOR_LIBIDN2)
|
||||
fprintf(fpout, "/* automatically generated by psl2c (punycode generated with libidn2/%s) */\n", idn2_check_version(NULL));
|
||||
#elif defined(BUILTIN_GENERATOR_LIBIDN)
|
||||
fprintf(fpout, "/* automatically generated by psl2c (punycode generated with libidn/%s) */\n", stringprep_check_version(NULL));
|
||||
#else
|
||||
fprintf(fpout, "/* automatically generated by psl2c (without punycode support) */\n");
|
||||
#endif
|
||||
|
||||
fprintf(fpout, "static _psl_entry_t %s[] = {\n", varname);
|
||||
|
||||
for (it = 0; it < v->cur; it++) {
|
||||
_psl_entry_t *e = _vector_get(v, it);
|
||||
|
||||
fprintf(fpout, "\t{ \"%s\", NULL, %hd, %d, %d },\n",
|
||||
e->label_buf, e->length, (int) e->nlabels, (int) e->flags);
|
||||
}
|
||||
|
||||
fprintf(fpout, "};\n");
|
||||
}
|
||||
|
||||
static void _print_psl_entries_dafsa(FILE *fpout, const _psl_vector_t *v)
|
||||
{
|
||||
FILE *fp;
|
||||
|
|
@ -192,13 +159,14 @@ static void _print_psl_entries_dafsa(FILE *fpout, const _psl_vector_t *v)
|
|||
while (*s && *s < 128) s++;
|
||||
if (*s) continue;
|
||||
|
||||
fprintf(fp, "%s, %d\n", e->label_buf, (int) e->flags);
|
||||
fprintf(fp, "%s, %X\n", e->label_buf, (int) (e->flags & 0x0F));
|
||||
}
|
||||
|
||||
fclose(fp);
|
||||
}
|
||||
|
||||
system("../tools/make_dafsa.py in.tmp out.tmp");
|
||||
if ((it = system(MAKE_DAFSA " in.tmp out.tmp")))
|
||||
fprintf(stderr, "Failed to execute " MAKE_DAFSA "\n");
|
||||
|
||||
if ((fp = fopen("out.tmp", "r"))) {
|
||||
char buf[256];
|
||||
|
|
@ -208,6 +176,9 @@ static void _print_psl_entries_dafsa(FILE *fpout, const _psl_vector_t *v)
|
|||
|
||||
fclose(fp);
|
||||
}
|
||||
|
||||
unlink("in.tmp");
|
||||
unlink("out.tmp");
|
||||
}
|
||||
|
||||
#if 0
|
||||
|
|
@ -262,15 +233,10 @@ int main(int argc, const char **argv)
|
|||
#ifdef _GENERATE_BUILTIN_DATA
|
||||
psl_ctx_t *psl;
|
||||
#endif
|
||||
int ret = 0, argpos = 1, dafsa = 0;
|
||||
|
||||
if (argc == 4 && !strcmp(argv[1], "--dafsa")) {
|
||||
argpos = 2;
|
||||
dafsa = 1;
|
||||
}
|
||||
int ret = 0, argpos = 1;
|
||||
|
||||
if (argc - argpos != 2) {
|
||||
fprintf(stderr, "Usage: psl2c [--dafsa] <infile> <outfile>\n");
|
||||
fprintf(stderr, "Usage: psl2c <infile> <outfile>\n");
|
||||
fprintf(stderr, " <infile> is the 'public_suffix_list.dat', lowercase UTF-8 encoded\n");
|
||||
fprintf(stderr, " <outfile> is the the C filename to be generated from <infile>\n");
|
||||
return 1;
|
||||
|
|
@ -299,10 +265,7 @@ int main(int argc, const char **argv)
|
|||
_add_punycode_if_needed(psl->suffixes);
|
||||
#endif
|
||||
|
||||
if (dafsa)
|
||||
_print_psl_entries_dafsa(fpout, psl->suffixes);
|
||||
else
|
||||
_print_psl_entries(fpout, psl->suffixes, "suffixes");
|
||||
|
||||
snprintf(cmd, cmdsize, "sha1sum %s", argv[argpos]);
|
||||
if ((pp = popen(cmd, "r"))) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue