axmol/tests/cpp-tests/Classes/CurlTest/CurlTest.cpp

/****************************************************************************
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 http://www.cocos2d-x.org

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 ****************************************************************************/

#include "platform/CCPlatformConfig.h"
#include "CurlTest.h"
#include "stdio.h"
#include "stdlib.h"
#include "curl/curl.h"

USING_NS_CC;

CurlTests::CurlTests()
{
    ADD_TEST_CASE(CurlTest);
}

CurlTest::CurlTest()
{
    auto label = Label::createWithTTF("Curl Test", "fonts/arial.ttf", 28);
    addChild(label, 0);
    label->setPosition(VisibleRect::center().x, VisibleRect::top().y - 50);

    auto listener            = EventListenerTouchAllAtOnce::create();
    listener->onTouchesEnded = CC_CALLBACK_2(CurlTest::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    // create a label to display the tip string
    _label = Label::createWithTTF("Touch the screen to connect", "fonts/arial.ttf", 22);
    _label->setPosition(VisibleRect::center());
    addChild(_label, 0);

    _label->retain();
}

struct MemoryStruct
{
    char* memory;
    size_t size;
};

static size_t WriteMemoryCallback(void* contents, size_t size, size_t nmemb, void* userp)
{
    size_t realsize          = size * nmemb;
    struct MemoryStruct* mem = (struct MemoryStruct*)userp;

    mem->memory = (char*)realloc(mem->memory, mem->size + realsize + 1);
    if (mem->memory == NULL)
    {
        /* out of memory! */
        printf("not enough memory (realloc returned NULL)\n");
        return 0;
    }

    memcpy(&(mem->memory[mem->size]), contents, realsize);
    mem->size += realsize;
    mem->memory[mem->size] = 0;

    return realsize;
}

// the test code is
// http://curl.haxx.se/mail/lib-2009-12/0071.html
void CurlTest::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
{
    CURL* curl;
    CURLcode res;
    char buffer[10];

    struct MemoryStruct chunk;

    chunk.memory = (char*)malloc(1); /* will be grown as needed by the realloc above */
    chunk.size   = 0;                /* no data at this point */

    curl = curl_easy_init();
    if (curl)
    {
        curl_easy_setopt(curl, CURLOPT_URL, "http://webtest.cocos2d-x.org/curltest");
        // code from http://curl.haxx.se/libcurl/c/getinmemory.html
        /* we pass our 'chunk' struct to the callback function */
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)&chunk);
        // If we don't provide a write function for curl, it will receive error code 23 on windows.
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);

        res = curl_easy_perform(curl);
        /* always cleanup */
        curl_easy_cleanup(curl);
        if (res == 0)
        {
            _label->setString(StringUtils::format("Connect successfully!\n%s", chunk.memory));
        }
        else
        {
            sprintf(buffer, "code: %i", res);
            _label->setString(buffer);
        }
    }
    else
    {
        _label->setString("no curl");
    }
}

CurlTest::~CurlTest()
{
    _label->release();
}