C/C++ 解析RTSP地址获取用户名、密码、IP、端口号信息

#include <iostream>

using namespace std;

int PraseURL(const char *url, char* user, char* psd, char *szip, int *iport)
{
	long lret = -1;
	if (url)
	{
		//1.先找到rtsp这个协议字段 或者是rtmp
		if (!_strnicmp(url, "rtsp://", 7) || !_strnicmp(url, "rtmp://", 7))
		{
			//2.查找用户名
			char *s, *ss;
			s = (char*)url + strlen("rtsp://");
			ss = strchr(s, '@');
			//判断链接是否存在用户名
			if (ss != NULL)
			{
				strncpy(user, s, ss - s);
				user[ss - s] = '\0';
				//3.查找密码
				s = strchr(user, ':');
				if (s)
				{
					ss = s;
					s++;
					strcpy(psd, s);
					user[ss - user] = '\0';
				}
				//4.再找ip地址
				s = (char*)url + strlen("rtsp://") + strlen(user) + strlen(psd) + 2;
			}
			else
			{
				user[0] = '\0';
				psd[0] = '\0';
				//4.再找ip地址
				s = (char*)url + strlen("rtsp://");
			}

			ss = strchr(s, '/');
			int Test = ss - s;
			strncpy(szip, s, ss - s);
			szip[ss - s] = '\0';

			//5.查找下是否是有端口设置
			s = strchr(szip, ':');
			//如果有端口设置，还需要修改IP地址
			if (s)
			{
				ss = s;
				s++;
				*iport = atoi(s);

				//同时修正ip地址
				int Test2 = ss - szip;
				szip[Test2] = '\0';
			}
			else
				*iport = 554;//默认端口554

			lret = 0;
		}
	}
	return lret;
}

int main()
{
	char url[] ="rtsp://admin:admin123@192.168.61.66:554/cam/realmonitor?channel=1&subtype=0";
	char ip[32]="";
	int port = 0;
	char user[32]="";
	char psd[32]="";
	PraseURL(url,user,psd,ip,&port);
	printf("IP=%s\nport=%d\nuser=%s\npsd=%s\n",ip,port,user,psd);
	return 0;
}