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/*
* MIT License
*
* Copyright (c) 2018-2019 powerdns.com bv
*
* 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.
*/
#pragma once
#include <string>
#include <curl/curlver.h>
#if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM >= 0x073200
/* we need this so that 'CURL' is not typedef'd to void,
which prevents us from wrapping it in a unique_ptr.
Wrapping in a shared_ptr is fine because of type erasure,
but it is a bit wasteful. */
#define CURL_STRICTER 1
#endif
#include <curl/curl.h>
#include "iputils.hh"
class MiniCurl
{
public:
using MiniCurlHeaders = std::map<std::string, std::string>;
static void init();
MiniCurl(const string& useragent="MiniCurl/0.0", bool failonerror=true);
~MiniCurl();
MiniCurl& operator=(const MiniCurl&) = delete;
std::string getURL(const std::string& str, const ComboAddress* rem=nullptr, const ComboAddress* src=nullptr, int timeout = 2, bool fastopen = false, bool verify = false, size_t byteslimit = 0, int http_status = 200);
std::string postURL(const std::string& str, const std::string& postdata, MiniCurlHeaders& headers, int timeout = 2, bool fastopen = false, bool verify = false);
private:
static size_t write_callback(char *ptr, size_t size, size_t nmemb, void *userdata);
#if defined(LIBCURL_VERSION_NUM) && LIBCURL_VERSION_NUM >= 0x072000 // 7.32.0
static size_t progress_callback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow);
#else
static size_t progress_callback(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
#endif
#ifdef CURL_STRICTER
std::unique_ptr<CURL, decltype(&curl_easy_cleanup)> d_curl{nullptr, curl_easy_cleanup};
std::unique_ptr<struct curl_slist, decltype(&curl_slist_free_all)> d_header_list{nullptr, curl_slist_free_all};
std::unique_ptr<struct curl_slist, decltype(&curl_slist_free_all)> d_host_list{nullptr, curl_slist_free_all};
#else
CURL* d_curl{};
struct curl_slist* d_header_list{};
struct curl_slist* d_host_list{};
#endif
std::string d_data;
size_t d_byteslimit{};
bool d_fresh{true};
bool d_failonerror;
void setupURL(const std::string& str, const ComboAddress* rem, const ComboAddress* src, int timeout, size_t byteslimit, bool fastopen, bool verify);
void setHeaders(const MiniCurlHeaders& headers);
void clearHeaders();
void clearHostsList();
};
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