Heng Well / Mbed 2 deprecated bcsdk

hwelltech block chain cpp sdk

Dependencies:   EthernetInterface SDFileSystem mbed-rtos mbed uniqueCPUID

Fork of bcsdk by Webb Xu

bcsdk 是 block chain sdk 的简写。它是由江苏恒为信息科技有限公司开发的 BlockChain 的 基于 mbed os 的 C++ 版本SDK，它能帮助开发者快速的在支持 mbed os 的芯片上开发 BlockChain 的应用。 bcsdk 的demo文件中包含了BlockChain中的 Key、Account、Asset、Transaction等方面的示例。其中： (1) Key 加密私钥是区块链上的主要授权机制。他们控制资产单位的发行和转让。 资产或帐户将定义发行或转移所需的单个密钥。 在 Key_test.cpp 中，我们实现了： 创建HSM密钥 键入密钥别名的名称（例如'gold'，'silver'，'bronze'），密钥别名是用于区分密钥的标签。

(2) Asset 资产是一种可以在区块链上发布的值类型。资产的所有单位均可互换，可以在各方之间直接交易，无需发行人参与。 在 Asset_test.cpp 中，我们实现了： 创建资产 键入资产别名的名称（例如'gold'，'silver'，'bronze'），资产别名是用于区分资产的标签。 选择“Key”键以使用现有的HSM密键，此密钥将用于此帐户中资产单位的发放和转移。

(3) Account 加帐户是恒为区块链核心平台中的一个对象，通过创建和跟踪控制程序来跟踪区块链上的资产的所有权。创建帐户时，您提供一个或多个“root”密钥和仲裁。 在 Account_test.cpp 中，我们实现了： 创建帐户 1 输入帐户别名的名称（例如'alice'，'bob'），帐户别名是用于区分帐户的标签。 2 键入名称以生成新的HSM密钥（例如'alice key'，'bob key'），此密钥将用于此帐户中资产单位的发放和转移。

(4) Transaction 交易包含一个或多个输入，以及一个或多个输出。恒为区块链核心平台的API允许您使用操作（包括发出，支出和返还）构建交易。 在 Transaction_test.cpp 中，我们实现了： 资产的交易 1 添加“账户支出”操作 2 为资产别名选择“Asset” 3 输入“100”作为金额 4 添加“使用帐户控制”操作 5 为帐户别名选择“Account” 6 为资产别名选择“Asset” 7 输入“100”作为金额 8 “提交”

Client.cpp

Committer:
webmaster
Date:
2017-11-03
Revision:
10:aabd720e632c
Parent:
8:f2a567ee3a46

File content as of revision 10:aabd720e632c:

#include "Client.h"
//#include <WINSOCK2.H>  
#include "mbed.h"
#include "EthernetInterface.h"
//#include "BlockChain.h"


Client::Client()
{
	m_strIP = "101.201.199.150";
	m_sPort = 80;
	m_url = "/info";
	m_host = "testbc.hwelltech.com";
	m_token = "962cd39d-6496-4b23-a2c5-85e445069a78";
}

Client::Client(string ip,short port)
{
	this->m_strIP = ip;
	this->m_sPort = port;

	m_url = "/info";
	m_host = "testbc.hwelltech.com";
	m_token = "962cd39d-6496-4b23-a2c5-85e445069a78";
}

Client::~Client()
{

}

bool Client::build_post_raw(const string & url,const string & content, string & post_raw)
{
	return build_post_raw(url,m_host,m_token,content,post_raw);
}

bool Client::build_post_raw(const string & url, const string & host, const string & token, const string & content, string & post_raw)
{
	bool ret = true;

	post_raw = "";
	post_raw.append("POST "+ url + " HTTP/1.1\r\n");
	post_raw.append("Host: " + host + "\r\n");
	post_raw.append("Connection: keep-alive\r\n");
	post_raw.append("accept: application/json\r\n");
	post_raw.append("content-type: application/json\r\n");
	string authorization = "Basic YmxvY2tnZW5lcmF0b3I6MTM3NzQzMDJlNTcyYmU4MWMxZmRmZjg2NGZiODA2Yjc2NjcxMzg5NzMwZjBjMDYwZDNlODExNTQ4OGRjNjQ2Mg==";
	//if(!token.empty())
	//	authorization = Base64Encode(token)
	post_raw.append("authorization: " + authorization + "\r\n");

	char pLen[16] = {0};
	//sprintf_s(pLen, sizeof(pLen), "%d", content.length());
	sprintf(pLen, "%d", content.length());
	string strLen = pLen;

	post_raw.append("Content-Length: " + strLen + "\r\n");
	post_raw.append("\r\n");
	post_raw.append(content);
	post_raw.append("\r\n\r\n");

	return ret;
}

string Client::get_content(const string & strRep)
{
	string content = "";
	content = strRep.substr(strRep.find("\r\n\r\n") + sizeof("\r\n\r\n") - 1); //sizeof("\r\n\r\n") 5
	if (content.at(0) != '{' && content.at(0) != '[')
	{
		content = content.substr(content.find("\r\n") + sizeof("\r\n") - 1);
	}
	return content;
}

bool Client::unbuild_post_raw(const string & strRep, int & content_length, string & url,string & content)
{
	bool ret = true;
	
	content_length = get_content_length(strRep);
	content = strRep.substr(strRep.find("\r\n\r\n"));

	if (strRep.find("200 OK") < 0)
	{
		ret = false;
	}
	
	return ret;
}

int Client::get_content_length(const string & strRaw)
{
	int len = -1; // 表示没找到
/*/
	string strRaw = "\
HTTP/1.1 200 OK\r\n\
Blockchain-Id: 13804cbf90e019cc0bcc7243828298492f5d0d87423f776181069eb9af9b2071\r\n\
Chain-Request-Id: f90965648d6aeb6075e3\r\n\
Content-Length: 145\r\n\
X-Frame-Options: DENY\r\n\
\r\n\r\n\
{\"alias\":\"t_key_1\",\"xpub\":\"1c926b1e7a88496e5bd7e29736f9ca85c5386bb995c95412b1084ddc1ab5f80e49e7aea51f08b36b3773baa6277c5902f2034d36315b32bf96a3082c048225d5\"}\
\n";
*/
	string str = "";
	int pos = strRaw.find("Content-Length:") + sizeof("Content-Length:");
	str = strRaw.substr(pos);
	pos = str.find("\r\n");
	str = str.substr(0,pos);
	len = atoi(str.c_str());

	return len;
}												 
int Client::http_post(const string & url,const string & content,string & strOut)
{
	string post_raw = "";
	build_post_raw(url,content,post_raw);
	return http_post_raw(post_raw,strOut);
}

int Client::http_post_raw(const string &strIn,string &strOut)
{
	string strReq;
	string strRep;
	strReq = strIn;

	//SOCKET sClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);  
	TCPSocketConnection sClient;
/*
	if(sClient == INVALID_SOCKET)  
	{  
		printf("invalid socket!");  
		return 0;  
	} 
*/ 
#ifdef WIN32
	// windows下是这样设置超时时间
	int recvTimeout = 3 * 1000;   //30s
	int sendTimeout = 3 * 1000;  //30s
	setsockopt(sClient, SOL_SOCKET, SO_RCVTIMEO, (char *)&recvTimeout ,sizeof(int));
	setsockopt(sClient, SOL_SOCKET, SO_SNDTIMEO, (char *)&sendTimeout ,sizeof(int));
#elif __LINUX__
	// linux下是这样设置超时时间
	struct timeval timeout = {3,0};    
	setsockopt(sClient, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,sizeof(struct timeval));
	setsockopt(sClient, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout,sizeof(struct timeval));
#else 
	unsigned int timeout = 1500;
	sClient.set_blocking(false, timeout); // Timeout after (1.5)s
#endif


/*
	sockaddr_in serAddr;  
	serAddr.sin_family = AF_INET;  
	serAddr.sin_port = htons(m_sPort);  
	serAddr.sin_addr.S_un.S_addr = inet_addr(m_strIP.c_str());  
	if(connect(sClient, (sockaddr *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)  
	{  
		printf("connect error !");  
		closesocket(sClient);  
		return SOCKET_ERROR;  
	}  
*/	
	while (sClient.connect(m_strIP.c_str(), m_sPort) < 0) {
        printf("Unable to connect to (%s) on port (%d)\n", m_strIP.c_str(), m_sPort);
        wait(1);
    }
    printf("Connected to Server at %s\n", m_strIP.c_str());
    
	int ret = 0;

/*	
	int left = strReq.length();
	unsigned int pos = 0;
	ret = send(sClient, strReq.c_str(), strReq.length(), 0);  
	while (ret < left )
	{
		pos = pos + ret;
		ret = send(sClient, strReq.c_str() + pos, strReq.length() - pos, 0);  
		ret = sClient.send(strReq.c_str() + pos, strReq.length() - pos);
		if (ret < 0)
		{
			return SOCKET_ERROR;
		}
	}
*/	
	ret = sClient.send_all((char *)strReq.c_str(), strReq.length());
	if (ret < 0)
	{
		//get last error
		//get errno
		return ret;
	}
#define DEBUG_LOG 1
#ifdef DEBUG_LOG
	//cout<< ">>>>>>>>>>HTTP Request (Length = "<< strReq.length() << "):\n" << strReq << endl;
	printf(">>>>>>>>>>HTTP Request (Length = %d):\r\n%s\r\n", strReq.length(), strReq.c_str());
#endif


	char recData[BUFSIZE+1] = {0};  

	ret = 0;
	//ret = recv(sClient, recData, BUFSIZE, 0);  
	ret = sClient.receive(recData, BUFSIZE);
	strRep.append(recData);

	// 第一次收数据可能没有收完全，所以一直收到没有数据为止，这里会堵塞
	while (ret > 0)
	{
		memset(recData,0,BUFSIZE);
		//ret = recv(sClient, recData, BUFSIZE, 0); 
		ret = sClient.receive(recData, BUFSIZE);

		if (ret > 0)
		{
			strRep.append(recData);
		}
	}

	strOut = strRep;

#ifdef DEBUG_LOG
	//cout<< ">>>>>>>>>>HTTP Response (Length = "<< strRep.length() << "):\n" << strRep << endl;
	printf(">>>>>>>>>>HTTP Response (Length = %d):\r\n%s\r\n", strRep.length(), strRep.c_str());
#endif

	// Clean up
	//closesocket(sClient); 
    sClient.close();
	return 0;
}