2018-11-09-Demo之C语言使用OpenSSL建立SSL的TLS连接

Demo之C语言使用OpenSSL建立SSL的TLS连接

使用开源的OpenSSL

初始准备

具体代码

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#include <stdlib.h>
#include <stdio.h> 
#include <sys/types.h>  
#include <string.h> 
#include <sys/socket.h> 
#include <arpa/inet.h>  
#include <curl.h>
#include <netdb.h>
#include <sys/sysinfo.h>
#include <signal.h>
#include "openssl/rsa.h"      
#include "openssl/crypto.h"
#include "openssl/x509.h"
#include "openssl/pem.h"
#include "openssl/ssl.h"
#include "openssl/err.h"
#include "openssl/rand.h"
/*所有需要的参数信息都在此处以#define的形式提供*/
#define CERTF  "/bin/client.crt"  /*客户端的证书(需经CA签名)*/
#define KEYF  "/bin/client.key"   /*客户端的私钥(建议加密存储)*/
#define CACERT "ca.crt"      /*CA 的证书*/
// #define PORT   9090          /*服务端的端口*/
// #define SERVER_ADDR "data.xxx.com"  /*服务段的IP地址*/
SSL*     ssl;
#define CHK_NULL(x) if ((x)==NULL) exit (-1)
#define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(-2); }
#define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(stderr); exit(-3); }
// #define LOGFILE "/dev/console"
// // #define LOG(fmt, arg...)   
// #define LOG(fmt, arg...)    do {    FILE *log_fp = fopen(LOGFILE, "w+"); \
//                         fprintf(log_fp, "%s:%s:%d:" fmt "\n", __FILE__, __func__, __LINE__, ##arg); \
//                        printf("[%s:%d]" fmt"\n", __FILE__, __LINE__, ##arg);\
//                         fclose(log_fp); \
//                     } while(0)			
//测试环境
#define TEST_TCP_SERVER  	"10.10.10.100"
#define TEST_TCP_PORT		 	8888
#define TEST_MSG_SERVER		"http://10.10.10.100:38080" 
#define TEST_UPLOAD_SERVER		"https://data.xxx.com:36443/voiceUploadByDev"
#define TEST_MP3_SERVER		"http://10.10.10.100:38080" 
long getuptimestamp()
{
	struct sysinfo info_now;
	memset(&info_now, 0 ,sizeof(struct sysinfo));
	sysinfo(&info_now);
	return info_now.uptime;
}
void  copyname(char *name,char *str,int len)
{    						 
    if(  strlen(str)  >  len-1 )
    	strncpy( name,str,len-1);
    else
			strcpy( name,str );
}
void to_lower(char *str)
{
 	int i=0;
 	while(str[i]!=0)
 	{
 		if((str[i]>='A')&&(str[i]<='Z'))
 		str[i]+=32;
 		i++;
 	}	
}
void to_upper(char *str)
{
 	int i=0;
 	while(str[i]!=0)
 	{
 		if((str[i]>='a')&&(str[i]<='z'))
 		str[i]-=32;
 		i++;
 	}
}
void to_erasing(char *str, char *pBuf)
{
	int i = 0, j = 0;
	while(str[i] != 0)
	{
		if(str[i] != ':')
		{
			pBuf[j] = str[i];
			j++;
		}
		i++;
	}
	LOG("pBuf:%s\n", pBuf);
}
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void* HelloThread(void *arg);
pthread_t syshellothreadhandle = 0;   //和服务器通讯
if( syshellothreadhandle == 0 )
{
		pthread_create( &syshellothreadhandle, NULL, HelloThread, NULL );
}
void* HelloThread(void *arg)
{
	LOG("------- HelloThread -------\n");		

	struct sockaddr_in addr_client;   
	struct sockaddr_in addr_server;
	int nLen = 1024*60;
	char *msg = (char *)malloc(nLen);
	memset(msg, 0, nLen);

	int nBleCount = 0;
	int nLedKey = 0;
	int nLedKey_mode = 0;
	//LOG("****************sayHelloII 1******************\n\n");
	while(1)
	{
		//LOG("****************sayHelloII 2******************\n\n");
		g_test_register_states = 0;
		connectstatus = 0;
		hearttimerecv = getuptimestamp();
		hearttimesend = hearttimerecv;
		pushtime = hearttimerecv;

////////////////////////////////////////////////////////////////////////////////////////////////////////////////		
		int err;
		int sd;
		struct sockaddr_in sa;
		SSL_CTX* ctx;
		//   SSL*     ssl;
		X509*    server_cert;
		char*    str;
		//   char     buf [4096];
		SSL_METHOD *meth;
		int       seed_int[100]; /*存放随机序列*/

		//   WSADATA wsaData;

		//   if(WSAStartup(MAKEWORD(2,2),&wsaData) != 0){
		//     LOG("WSAStartup()fail:%d\n",GetLastError());
		//     return -1;
		//   }

		OpenSSL_add_ssl_algorithms(); /*初始化*/
		SSL_load_error_strings();     /*为打印调试信息作准备*/

		meth = TLSv1_client_method(); /*采用什么协议(SSLv2/SSLv3/TLSv1)在此指定*/
		ctx = SSL_CTX_new (meth);                       
		CHK_NULL(ctx);

		//   SSL_CTX_set_verify(ctx,SSL_VERIFY_PEER,NULL);   /*验证与否*/
		//   SSL_CTX_load_verify_locations(ctx,CACERT,NULL); /*若验证,则放置CA证书*/


		if (SSL_CTX_use_certificate_file(ctx, CERTF, SSL_FILETYPE_PEM) <= 0) {
			ERR_print_errors_fp(stderr);
			sleep(3);
			continue;
		}
		if (SSL_CTX_use_PrivateKey_file(ctx, KEYF, SSL_FILETYPE_PEM) <= 0) {
			ERR_print_errors_fp(stderr);
			sleep(3);
			continue;
		}

		if (!SSL_CTX_check_private_key(ctx)) {
			LOG("Private key does not match the certificate public key\n");
			sleep(3);
			continue;
		}

		/*构建随机数生成机制,WIN32平台必需*/
		srand( (unsigned)time( NULL ) );
		int i = 0;
		for( i = 0; i < 100; i++ )
				seed_int[i] = rand();
		RAND_seed(seed_int, sizeof(seed_int));

		/*以下是正常的TCP socket建立过程 .............................. */
		LOG("Begin tcp socket...\n");

		sd = socket (AF_INET, SOCK_STREAM, 0);       CHK_ERR(sd, "socket");


		memset (&sa, '\0', sizeof(sa));
		sa.sin_family      = AF_INET;
		//sa.sin_addr.s_addr = inet_addr (SERVER_ADDR);   /* Server IP */
			LOG("TEST_TCP_SERVER:%s\n", TEST_TCP_SERVER);  
			if( strstr(TEST_TCP_SERVER,"xxx.com") )
			{
					struct hostent *phost = gethostbyname(TEST_TCP_SERVER);
					if( !phost )
					{
						// LOG("gethostbyname error client_socket:%d.\n", client_socket);
						// if(client_socket > 0)
						// 	close( client_socket );   
						// client_socket = -1;
						sleep(3);
						continue;
					}
					char	str[32];
					memset(str,0,32);
					strcpy(str, inet_ntoa(*((struct in_addr*)(phost->h_addr)) ) );
					LOG("%s:------%s\n",TEST_TCP_SERVER, str);
					sa.sin_addr.s_addr=inet_addr(str);  
			}
			else
			{
				sa.sin_addr.s_addr=inet_addr(TEST_TCP_SERVER);
			}
		sa.sin_port        = htons     (PORT);          /* Server Port number */

		err = connect(sd, (struct sockaddr*) &sa,
				sizeof(sa));
		CHK_ERR(err, "connect");

		/* TCP 链接已建立.开始 SSL 握手过程.......................... */
		LOG("Begin SSL negotiation \n");

		ssl = SSL_new (ctx);                        
		CHK_NULL(ssl);

		SSL_set_fd (ssl, sd);
		err = SSL_connect (ssl);
		CHK_SSL(err);

		/*打印所有加密算法的信息(可选)*/
		LOG ("SSL connection using %s\n", SSL_get_cipher (ssl));

		/*得到服务端的证书并打印些信息(可选) */
		server_cert = SSL_get_peer_certificate (ssl);      
		CHK_NULL(server_cert);
		LOG ("Server certificate:\n");

		str = X509_NAME_oneline (X509_get_subject_name (server_cert),0,0);
		CHK_NULL(str);
		LOG ("/t subject: %s\n", str);
		//   Free (str);

		str = X509_NAME_oneline (X509_get_issuer_name  (server_cert),0,0);
		CHK_NULL(str);
		LOG ("/t issuer: %s\n", str);

		//   Free (str);

		//   X509_free (server_cert);  /*如不再需要,需将证书释放 */

		/* 数据交换开始,用SSL_write,SSL_read代替write,read */
		LOG("Begin SSL data exchange\n");
////////////////////////////////////////////////////////////////////////////////////////////////////////////////

		nLedKey = 0;     

		LOG("----- connect ok ----\n");
		int  res = regist();
		LOG("regist   RES = %d.................\n",res);
		if( res == 1 )
		{
		}
		else if( res == 1000 )
		{
			// close( client_socket );   

			SSL_shutdown (ssl);  /* send SSL/TLS close_notify */
			/* 收尾工作 */
			sd = -1;
			shutdown (sd,2);
			SSL_free (ssl);
			SSL_CTX_free (ctx);

			// client_socket = -1;
			sleep(3);
			continue;   
		}
		else
		{
				// close( client_socket );   

				SSL_shutdown (ssl);  /* send SSL/TLS close_notify */
				/* 收尾工作 */
				sd = -1;
				shutdown (sd,2);
				SSL_free (ssl);
				SSL_CTX_free (ctx);

				// client_socket = -1;
				if(msg)
					free(msg);
				return NULL;
		}
		if(atoi(szRun) == 0)
		{
			char szBuf[120] = "\0";
			memset(szBuf, 0, sizeof(szBuf));
			sprintf(szBuf, "connectok.mp3");

			pthread_t prompt_thread;
			pthread_create( &prompt_thread, NULL, prompt_play, (void *)szBuf);

		}

		g_test_register_states = 1;

		//获取设备信息
		char  sDid[64];
		memset(sDid,0,64);

		int toType;
		getSdevice(g_boxsettings.toCallUser,g_boxsettings.sDid,&toType);


		char szTempMac[32] = "\0";
		memset(szTempMac, 0, sizeof(szTempMac));
		sprintf(szTempMac, "11");
		to_erasing(test_did, szTempMac+2);
		char cmd[128];
		memset(cmd,0,128);
		// sprintf(cmd,"{\"msisdn\":\"\",\"mac\":\"%s\",\"smartDeviceId\":\"%s\",\"imei\":\"00099\",\"sim\":\"1111100\"}",test_did, test_did);
		sprintf(cmd,"{\"mac\":\"%s\",\"smartDeviceId\":\"%s\"}",test_did, szTempMac);
		LOG("%s\n", cmd);

		int nR = 0;
		nR = migusdk_init(cmd);
		LOG("nr:%d\n", nR);

		char szVersion[48] = "\0";
		getSdkVersion(szVersion);
		LOG("migu version:%s\n", szVersion);
		heartBeat();

		//LOG("****************sayHelloII 3******************\n\n");
		while(1)
		{
			//LOG("****************sayHelloII 4******************\n\n");
				if(atoi(szRun) == 0)
				{
					//LOG("****************sayHelloII  connstatus %s\n", szRun);
					break;
				}

				if( sendheart() < 0 ) 	
				{
					//LOG("****************sayHelloII sendheart < 0\n");
					break;
				}

				struct timeval tm;
				fd_set set;
				tm.tv_sec = 3;
				tm.tv_usec = 0;		
				FD_ZERO(&set);
				/*
				FD_SET(client_socket, &set);
				int res = select(client_socket+1, &set, NULL, NULL, &tm);
				*/
				//LOG("****************sayHelloII 5******************\n\n");
				SSL_set_fd(ssl, sd);
				int res = SSL_pending(ssl);
				//LOG("****************sayHelloII 6******************\n\n");
				// if( res > 0 )
				{	 					
					// SSL_set_fd (ssl, sd);
					// int err = SSL_connect (ssl);
					// CHK_SSL(err);
					// if(err>=0)
					//if( FD_ISSET(client_socket, &set) )					
					{

						{

							//LOG("****************sayHelloII 7******************\n\n");
							memset(msg,0,nLen);
							int errr = SSL_read (ssl, msg, nLen);
							CHK_SSL(errr);
							//LOG("****************sayHelloII 8******************\n\n");
							{

								// if(total < 1024)
								// 	LOG("\n\n\n %s \n\n",msg);
								if(nLen < 1024)
									LOG("\n\n\n (%s) \n\n",msg);
								else
								{

								}				
								doyidongapp(msg+4);
							}

						}

					}

				}


		}


		if(!ssl)
		{
			SSL_shutdown (ssl);  /* send SSL/TLS close_notify */
			/* 收尾工作 */
			sd = -1;
			shutdown (sd,2);
			SSL_free (ssl);
			SSL_CTX_free (ctx);
			LOG("SSL_new error!\n");
		}
		connectstatus = 0;  		
		LOG("\n\n****************sayHelloII end******************\n\n");
		sleep(2);

	}

	g_test_register_states = 0;

	if(msg)
		free(msg);

	LOG("====== HelloThread end ======\n");               
	return NULL;

}
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本文标题为 2018-11-09-Demo之C语言使用OpenSSL建立SSL的TLS连接
本文链接为 https://foolsparadise.cn/2018/bc0a9335c27/2018-11-09-Demo之C语言使用OpenSSL建立SSL的TLS连接/.