分享一份 libcurl/7.70.0 OpenSSL/1.1.1g 网页访问模块 - 精易论坛

// dll_libcurl.cpp : 定义 DLL 应用程序的导出函数。
//
#include "stdafx.h"
struct MemoryStruct {
std::vector<char>memory;
size_t size;
};
extern "C" __declspec(dllexport) int __stdcall curl_global_init_(int flags)
{
int ret = curl_global_init(flags);
return ret;
}
extern "C" __declspec(dllexport) void __stdcall curl_global_cleanup_()
{
curl_global_cleanup();
}
//网页响应内容回调
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.reserve(realsize);
for (size_t i = 0; i < realsize; i++)
{
mem->memory.push_back(((char *)contents)[i]);
}
mem->size += realsize;
return realsize;
}
//网页响应协议头回调
static size_t HeaderCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
size_t realsize = size * nmemb;
struct MemoryStruct *mem = (struct MemoryStruct *)userp;
mem->memory.reserve(realsize);
for (size_t i = 0; i < realsize; i++)
{
mem->memory.push_back(((char *)contents)[i]);
}
mem->size += realsize;
return realsize;
}
extern "C" __declspec(dllexport) int __stdcall GetUrlHTTP(char *url, char *ret_response, int time_out, char *header, char *proxy,
char* ret_header, int *ret_header_size, int *ret_content_size, bool Redirect)
{
CURL *curl;
CURLcode res;
curl = curl_easy_init();
if (curl)
{
MemoryStruct buffer, rheader;
buffer.size = 0;
rheader.size = 0;
//curl_easy_setopt(curl, CURLOPT_HEADER, 1);//设为1，则在返回的内容里包含http header；
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, (int)Redirect);//跟踪重定向
curl_easy_setopt(curl, CURLOPT_TIMEOUT, time_out); /*timeout 30s,add by edgeyang*/
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1); /*no signal,add by edgeyang*/
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, ""); //初始化cookie引擎,才能正确接收到cookie数据.
//curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "cookie_open.txt");
curl_easy_setopt(curl, CURLOPT_PROXY, proxy);//设置代理
curl_easy_setopt(curl, CURLOPT_URL, url);//设置链接
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, &rheader);
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, HeaderCallback);
//忽略 ssl验证
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
curl_slist *headers = NULL;//创建协议头列表
if (header)
{
//分割出协议头进行添加
char *token;
char s[4] = "\r\n";
token = strtok(header, s);
while (token)
{
//std::cout << token << std::endl;
headers = curl_slist_append(headers, token);
token = strtok(NULL, s);
}
}
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
res = curl_easy_perform(curl);//执行请求
if (headers)
{
curl_slist_free_all(headers);
}
//std::cout << rheader.memory << std::endl;
//std::cout << buffer.memory << std::endl;
if (ret_response)
{
memset(ret_response, 0, sizeof(ret_response));
std::copy(buffer.memory.begin(), buffer.memory.end(), ret_response);
}
if (ret_header)
{
memset(ret_header, 0, sizeof(ret_header));
std::copy(rheader.memory.begin(), rheader.memory.end(), ret_header);
}
if (ret_header_size)
{
*ret_header_size = rheader.size;
}
if (ret_content_size)
{
*ret_content_size = buffer.size;
}
curl_easy_cleanup(curl);
}
return res;
}
extern "C" __declspec(dllexport) int __stdcall PostUrlHTTP(char *url, char* PostData, char *ret_response, int time_out, char *header, char *proxy,
char* ret_header, int *ret_header_size, int *ret_content_size, bool Redirect)
{
CURL *curl;
CURLcode res;
curl = curl_easy_init();
if (curl)
{
MemoryStruct buffer, rheader;
buffer.size = 0;
rheader.size = 0;
//curl_easy_setopt(curl, CURLOPT_HEADER, 1);//设为1，则在返回的内容里包含http header；
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, (int)Redirect);//跟踪重定向
curl_easy_setopt(curl, CURLOPT_TIMEOUT, time_out); /*timeout 30s,add by edgeyang*/
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1); /*no signal,add by edgeyang*/
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, ""); //初始化cookie引擎,才能正确接收到cookie数据.
//curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "cookie_open.txt");
curl_easy_setopt(curl, CURLOPT_PROXY, proxy);//设置代理
curl_easy_setopt(curl, CURLOPT_URL, url);//设置链接
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, &rheader);
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, HeaderCallback);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, PostData); //POST方式访问并且指定数据
//忽略ssl验证
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
curl_slist *headers = NULL;//创建协议头列表
if (header)
{
//分割出协议头进行添加
char *token;
char s[4] = "\r\n";
token = strtok(header, s);
while (token)
{
//std::cout << token << std::endl;
headers = curl_slist_append(headers, token);
token = strtok(NULL, s);
}
}
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
res = curl_easy_perform(curl);//执行请求
if (headers)
{
curl_slist_free_all(headers);
}
//std::cout << rheader.memory << std::endl;
//std::cout << buffer.memory << std::endl;
if (ret_response)
{
memset(ret_response, 0, sizeof(ret_response));
std::copy(buffer.memory.begin(), buffer.memory.end(), ret_response);
}
if (ret_header)
{
memset(ret_header, 0, sizeof(ret_header));
std::copy(rheader.memory.begin(), rheader.memory.end(), ret_header);
}
if (ret_header_size)
{
*ret_header_size = rheader.size;
}
if (ret_content_size)
{
*ret_content_size = buffer.size;
}
curl_easy_cleanup(curl);
}
return res;
}

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