www.pudn.com > winnap.rar > abao_lrcdownload.cpp

 
////////////////////////////////////////////// 
/// @defgroup abaolrcdownload lrc歌词下载类 
/// @author  abao++ 
/// @version 1.0 
/// @date    2006-9-26 19:39:07 
/// @{ 
////////////////////////////////////////////// 
 
#include"abao_lrcdownload.h" 
#include"abao_lrcfile.h" 
char* AbaoHttp::UrlEncode(const char* in,char* out) 
{ 
	//简单的urlEncode，简单的十六进制汉字内码 
	char* p=out; 
	for(;*in;in++) 
	{ 
		if(*in>0) 
		{ 
			switch(*in) 
			{ 
			case ' ': 
				*p++='+'; 
				break; 
			default: 
			*p++=*in; 
			} 
		} 
		else  
		{ 
			sprintf(p,"%%%2x",*in&0xff); 
			p+=3; 
		} 
	} 
	*(p+1)=0; 
	return out; 
} 
int AbaoHttp::GetHttp(const char* head,string& hostname) 
{ 
	//sockect 连接网站 ，并读取返回数据到httpbuf 
	SOCKADDR_IN   saServer;    
	LPHOSTENT   lphostent;    
	WSADATA   wsadata;    
	SOCKET   hsocket;    
	int   nRet;    
	if(WSAStartup(winsock_version,&wsadata))   return 0; 
	if(!hostname.empty()) 
	{ 
		lphostent=gethostbyname(hostname.c_str());    
	} 
	else 
	{ 
		if(!this->HostName.empty()) lphostent=gethostbyname(this->HostName.c_str());    
		else 
			return 0; 
	} 
	if(lphostent==NULL)   return 0; 
	hsocket   =   socket(AF_INET,   SOCK_STREAM,   IPPROTO_TCP);    
	saServer.sin_family   =   AF_INET;    
	//   Use   def.   now,   need   to   handle   general   case    
	saServer.sin_port   =   htons(80);    
	saServer.sin_addr   =   *((LPIN_ADDR)*lphostent->h_addr_list);    
	nRet   =   connect(hsocket,   (LPSOCKADDR)&saServer,   sizeof(SOCKADDR_IN));    
	if   (nRet   ==   SOCKET_ERROR)    
	{      
		closesocket(hsocket);    
		return 0;    
	}    
	nRet   =   send(hsocket,   head,   strlen(head),   0);    
	if   (nRet   ==   SOCKET_ERROR)    
	{    
		closesocket(hsocket);    
		return 0; 
	}    
	char   dest[10001];    
	nRet=1;    
	this->buf=""; 
	while(nRet>0)    
	{    
		nRet=recv(hsocket,(LPSTR)dest,10000,0);    
		if(nRet>0)    
			dest[nRet]=0;    
		else    
			dest[0]=0;    
		this->buf+=dest; 
	}    
	return 1; 
} 
AbaoLrcDownload::AbaoLrcDownload() 
{ 
//初始化网站以及http头 
	httpheadformat="POST %s HTTP/1.1\r\n" 
		//"Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/msword, */*\r\n" 
		//"Referer: http://www.jpwy.net/gc/\r\n" 
		"Accept-Language: zh-cn\r\n" 
		"Content-Type: application/x-www-form-urlencoded\r\n" 
		//"Accept-Encoding: gzip, deflate\r\n" 
		//"User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)\r\n" 
		"Host: www.jpwy.net\r\n" 
		"Content-Length: 32\r\n" 
		//"Connection: Keep-Alive\r\n" 
		"Cache-Control: no-cache\r\n" 
		//"Cookie: cck_lasttime=1159152815187; cck_count=1; is_use_cookie=yes; is_get_4088=yes\r\n" 
		"\r\n" 
		//"keyword=%D6%DC%BD%DC%C2%D7&R1=V1\r\n"; 
		"%s\r\n"; 
		http.HostName="www.jpwy.net"; 
 
} 
int AbaoLrcDownload::Search() 
{ 
	//根据id3标题以及文件名分离标题提取信息 
	if(this->Download(lrcfile->id3v2title.c_str())) return 1;  
	if(this->Download(lrcfile->id3v1title.c_str())) return 1;  
	return this->Download(lrcfile->Mp3Name.c_str());  
} 
int AbaoLrcDownload::Download(const char * keyword) 
{    
	//根据关键字网站读取信息 
	if(*keyword==0) return 0; 
	string k=keyword; 
	int kpos=k.rfind('-'); 
	if(kpos!=-1) 
	{	 
		k=k.substr(kpos+1,k.size()-kpos); 
	} 
	else 
	{ 
		kpos=k.rfind('.'); 
		k=k.substr(kpos+1,k.size()-kpos); 
	}		 
	char url[256]; 
	char reqbuf[1024]; 
	http.UrlEncode(k.c_str(),reqbuf); 
	//sprintf(reqbuf,searchformat,url); 
	sprintf(url,"R1=V1&keyword=%s\r\n",reqbuf); 
	sprintf(reqbuf,httpheadformat,"/gc/search.php",url); 
	if(!http.GetHttp(reqbuf))  
		return 0; 
	//printf("%s",http.buf.c_str()); 
	int pos; 
	pos=http.buf.find("对不起，没有找到与歌曲",0); 
	if(pos>0) return 0; 
		pos=http.buf.find("down.php",0); 
	int endpos; 
	string downloadurl; 
	while(pos>0) 
	{ 
		int arpos=http.buf.rfind("search.php",pos); 
		arpos=http.buf.find(">",arpos); 
		int arposend=http.buf.find("<",arpos); 
		string ar=http.buf.substr(arpos+1,arposend-arpos-1); 
		if(this->lrcfile->id3v2artist.find(ar)!=-1||this->lrcfile->id3v1artist.find(ar)!=-1) 
		{ 
			int endpos=http.buf.find('\"',pos); 
			downloadurl=http.buf.substr(pos+9,endpos-10-pos); 
			//printf("%s",downloadurl.c_str()); 
			//sprintf(reqbuf,downloadformat,downloadurl.c_str()); 
			sprintf(reqbuf,httpheadformat,"/gc/down.php",downloadurl.c_str()); 
			if(!http.GetHttp(reqbuf)) return 0; 
			pos=http.buf.find("stream\r\n\r\n"); 
			pos=http.buf.find("\r\n",pos+11); 
			this->lrcstr=http.buf.substr(pos+2,http.buf.size()-12-pos); 
			return 1; 
		} 
		pos=http.buf.find("down.php",pos+10); 
	} 
	pos=http.buf.find("down.php",0); 
	if(pos>0) 
	{ 
		endpos=http.buf.find('\"',pos); 
		string downloadurl=http.buf.substr(pos+9,endpos-10-pos); 
		//printf("%s",downloadurl.c_str()); 
		sprintf(reqbuf,httpheadformat,"/gc/down.php",downloadurl.c_str()); 
		if(!http.GetHttp(reqbuf)) return 0; 
		pos=http.buf.find("stream\r\n\r\n"); 
		pos=http.buf.find("\r\n",pos+11); 
		this->lrcstr=http.buf.substr(pos+2,http.buf.size()-12-pos); 
		return 1; 
	} 
	return 0; 
}  
 
/// @}  文件注释完毕