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/*
* Copyright (c) 2016-2019 Belledonne Communications SARL.
*
* This file is part of belr - a language recognition library for ABNF-defined grammars.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "bctoolbox/logging.h"
#include "belr-tester.h"
#include <cstdio>
using namespace ::std;
using namespace ::belr;
static bool parseMessage(shared_ptr<Grammar> grammar, const string &message) {
shared_ptr<DebugParser> parser = make_shared<DebugParser>(grammar);
parser->setObservedRules({"sip-message"});
size_t pos = 0;
shared_ptr<DebugElement> elem = parser->parseInput("sip-message", message, &pos);
BC_ASSERT_TRUE(elem != nullptr);
if (!elem) return FALSE;
BC_ASSERT_EQUAL((int)pos, (int)message.size(), int, "%i");
BC_ASSERT_TRUE(message == elem->getValue());
return message.size() == pos && message == elem->getValue();
}
static void sipgrammar_save_and_load(void) {
string grammarToParse = bcTesterRes("sipgrammar.txt");
string grammarDump = bcTesterFile("grammarDump.bin");
string sipmessage = openFile(bcTesterRes("register.txt"));
remove(grammarDump.c_str());
BC_ASSERT_TRUE(sipmessage.size() > 0);
ABNFGrammarBuilder builder;
// Read grammar put it in object grammar
auto start = std::chrono::high_resolution_clock::now();
shared_ptr<Grammar> grammar = builder.createFromAbnfFile(grammarToParse, make_shared<CoreRules>());
auto finish = std::chrono::high_resolution_clock::now();
std::chrono::duration<double> elapsedFirst = finish - start;
BC_ASSERT_FALSE(!grammar);
if (!grammar) return;
// make sure we're able to parse a SIP message with the created grammar
BC_ASSERT_TRUE(parseMessage(grammar, sipmessage));
// Save grammar
grammar->save(grammarDump);
// Load grammar
start = std::chrono::high_resolution_clock::now();
shared_ptr<Grammar> loadedGram = make_shared<Grammar>("loaded");
BC_ASSERT_TRUE(loadedGram->load(grammarDump) == 0);
finish = std::chrono::high_resolution_clock::now();
std::chrono::duration<double> elapsedSecond = finish - start;
// Make sure the loaded from binary file grammar is still able to parse the sip message:
BC_ASSERT_TRUE(parseMessage(loadedGram, sipmessage));
BC_ASSERT_TRUE(elapsedFirst.count() > 2 * elapsedSecond.count());
}
/**
* In SIP grammar, we have:
* header-name = token
* This kind of rules were causing issues in previous version of belr because "header-name" rule could not be attached
* with a parser handler, as the recognizer behind it was named "token".
*/
static void aliases_rules(void) {
string grammarToParse = bcTesterRes("sipgrammar.txt");
string sipmessage = openFile(bcTesterRes("response.txt"));
BC_ASSERT_TRUE(sipmessage.size() > 0);
ABNFGrammarBuilder builder;
// Read grammar put it in object grammar
shared_ptr<Grammar> grammar = builder.createFromAbnfFile(grammarToParse, make_shared<CoreRules>());
BC_ASSERT_FALSE(!grammar);
if (!grammar) return;
shared_ptr<DebugParser> parser = make_shared<DebugParser>(grammar);
parser->setObservedRules({"sip-message", "header-name"});
size_t pos = 0;
shared_ptr<DebugElement> elem = parser->parseInput("sip-message", sipmessage, &pos);
BC_ASSERT_TRUE(elem != nullptr);
if (!elem) return;
BC_ASSERT_EQUAL((int)pos, (int)sipmessage.size(), int, "%i");
BC_ASSERT_TRUE(sipmessage == elem->getValue());
list<shared_ptr<DebugElement>> headerNames;
elem->findChildren("header-name", headerNames);
BC_ASSERT_TRUE(headerNames.size() == 1);
if (!headerNames.empty()) {
BC_ASSERT_TRUE(headerNames.front()->getValue() == "Custom-header");
}
}
static void test_grammar_loader(void) {
GrammarLoader &loader = GrammarLoader::get();
loader.addPath(std::string(bc_tester_get_resource_dir_prefix()));
shared_ptr<Grammar> grammar = loader.load("belr-grammar-example.blr");
BC_ASSERT_PTR_NOT_NULL(grammar);
}
static test_t tests[] = {TEST_NO_TAG("SIP grammar save and load", sipgrammar_save_and_load),
TEST_NO_TAG("SIP grammar with aliases rules", aliases_rules),
TEST_NO_TAG("Grammar loader", test_grammar_loader)};
test_suite_t grammar_suite = {"Grammar", NULL, NULL, NULL, NULL, sizeof(tests) / sizeof(tests[0]), tests, 0, 0};
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