mirror of
https://github.com/anope/anope.git
synced 2026-06-23 21:06:38 +02:00
Sadie Powell
108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
// Anope IRC Services <https://www.anope.org/>
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//
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// Copyright (C) 2003-2025 Anope Contributors
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//
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// Anope is free software. You can use, modify, and/or distribute it under the
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// terms of version 2 of the GNU General Public License. See docs/LICENSE.txt
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// for the complete terms of this license and docs/AUTHORS.txt for a list of
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// contributors.
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//
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// Based on the original code of Epona by Lara
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// Based on the original code of Services by Andy Church
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//
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// SPDX-License-Identifier: GPL-2.0-only
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/// BEGIN CMAKE
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/// if(WIN32)
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/// target_link_libraries(${SO} PRIVATE CONAN_PKG::pcre2)
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/// else()
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/// pkg_check_modules("PCRE2" IMPORTED_TARGET REQUIRED "libpcre2-8")
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/// target_link_libraries(${SO} PRIVATE PkgConfig::PCRE2)
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/// endif()
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/// END CMAKE
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#include "module.h"
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#define PCRE2_CODE_UNIT_WIDTH 8
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#include <pcre2.h>
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class PCRERegex final
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: public Regex
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{
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pcre2_code *regex;
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public:
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PCRERegex(const Anope::string &expr) : Regex(expr)
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{
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int errcode;
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PCRE2_SIZE erroffset;
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this->regex = pcre2_compile(reinterpret_cast<PCRE2_SPTR8>(expr.c_str()), expr.length(), PCRE2_CASELESS, &errcode, &erroffset, NULL);
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if (!this->regex)
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{
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PCRE2_UCHAR error[128];
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pcre2_get_error_message(errcode, error, sizeof error);
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throw RegexException("Error in regex " + expr + " at offset " + Anope::ToString(erroffset) + ": " + reinterpret_cast<const char*>(error));
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}
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}
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~PCRERegex()
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{
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pcre2_code_free(this->regex);
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}
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bool Matches(const Anope::string &str)
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{
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pcre2_match_data *unused = pcre2_match_data_create_from_pattern(this->regex, NULL);
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int result = pcre2_match(regex, reinterpret_cast<PCRE2_SPTR8>(str.c_str()), str.length(), 0, 0, unused, NULL);
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pcre2_match_data_free(unused);
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return result >= 0;
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}
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};
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class PCRERegexProvider final
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: public RegexProvider
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{
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public:
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PCRERegexProvider(Module *creator) : RegexProvider(creator, "regex/pcre") { }
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Regex *Compile(const Anope::string &expression) override
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{
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return new PCRERegex(expression);
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}
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};
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class ModuleRegexPCRE final
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: public Module
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{
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PCRERegexProvider pcre_regex_provider;
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public:
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ModuleRegexPCRE(const Anope::string &modname, const Anope::string &creator) : Module(modname, creator, EXTRA | VENDOR),
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pcre_regex_provider(this)
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{
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this->SetPermanent(true);
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std::vector<char> pcre_version(16);
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if (pcre2_config(PCRE2_CONFIG_VERSION, pcre_version.data()) >= 0)
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Log(this) << "Module was compiled against PCRE2 version " << PCRE2_MAJOR << "." << PCRE2_MINOR << " and is running against version " << pcre_version.data();
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}
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~ModuleRegexPCRE()
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{
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for (auto *xlm : XLineManager::XLineManagers)
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{
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for (auto *x : xlm->GetList())
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{
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if (x->regex && dynamic_cast<PCRERegex *>(x->regex))
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{
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delete x->regex;
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x->regex = NULL;
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}
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}
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}
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}
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};
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MODULE_INIT(ModuleRegexPCRE)
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