longbuilder

一、生成用于签发client和server证书的ca根证书。
mkdir -p ca
 
#生成CA私钥，1024位RSA私钥，这里简单起见，没有对私钥进行加密。
openssl genrsa -out ca/ca.key 1024
 
#生成ca的证书请求文件
openssl req -new -out ca/ca.csr -key ca/ca.key
 
#用CA私钥进行自签名，生成ca的证书文件

longbuilder

#include <stdio.h>
#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <arpa/inet.h>

#include <openssl/ssl.h>
#include <event2/event.h>
#include <event2/util.h>

longbuilder

#include <stdio.h> 
#include <math.h>

int main() 
{ 
    double x,y,a,b;
	double m,n;
	freopen("data.txt", "r", stdin);
	while(scanf("%lf %lf %lf %lf", &a, &b, &x, &y) !=EOF)
	{

longbuilder

#define MAX_BUFFER 1024  ///< read buf size
unsigned char g_buf[MAX_BUFFER+1]; /// read buf 缓冲区
int g_bufLen;  /// 缓冲区内数据长度
static int DATASIZE = 64; /// hid读写数据长度，Report Length
IOHIDDeviceRef hidDev; /// hid设备
pthread_t pthreadID; ///input read thread
static pthread_mutex_t g_mutex; /// 读写锁
static pthread_cond_t g_cond;  /// 读写信号量
 
 

longbuilder

//转换为灰度图
IplImage* pGrayImage = cvLoadImage( "image0.bmp", 0);

 //利用Canny算子进行边缘检测
IplImage * pCannyImg=cvCreateImage(cvGetSize(pGrayImage),pGrayImage->depth,1);
cvCanny(pGrayImage,pCannyImg,50,150,3);

//膨胀，使边缘轮廓闭合
IplImage * pDilateImg=cvCreateImage(cvGetSize(pGrayImage),pGrayImage->depth,1);
IplConvKernel *rect_2;

longbuilder

#include <stdio.h>
#include <openssl/aes.h>

#define AES_KEY_LENGTH 16  // aes-128

std::string String2Hex(const unsigned char *src, size_t len)                                                                                                                                                     
{
    std::string dest = ""; 
    for (size_t i = 0; i < len; ++i)
    {   

longbuilder

// struct filed only support uint* and string
// for string, there should be a value to represent the length of string

// packed
func WriteStructToBuffer(buffer *bytes.Buffer, data interface{}) error {
    v := reflect.Indirect(reflect.ValueOf(data))
    if v.Kind() != reflect.Struct {                                                                                                                                                                              
        return errors.New("invaild type Not a struct")
    }

longbuilder

#include <sstream>
#include <string>
#include <boost/property_tree/json_parser.hpp>

int parseJson(const std::string &s)
{
    using boost::property_tree::ptree;
    ptree pt;
    std::stringstream ss(s);

longbuilder

#ifndef BIT_MAP_H_
#define BIT_MAP_H_
#include <stdlib.h>

template <typename RANK = int>
class BitMap
{
public:
    BitMap(RANK n) :
        capacity_(n),

longbuilder

// 返回最后一个不大于 target 的位置

template <typename T>
int binary_search(T *A, int low, int high, T target)
{
    while (low < high) {
        int mid = (low + high) / 2;
        target < A[mid] ? (high = mid) : (low = mid + 1); 
    }