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//---------------------------------------------------------------------------------------------
//--name: iesource.c -------------------------------
//-- to get web sourcecode -------------------------------
//----------------------------------------------------------------------------------------------
＃i nclude <stdio.h>
＃i nclude <sys/socket.h>
＃i nclude <string.h>
＃i nclude <arpa/inet.h>
＃i nclude <netdb.h>
int port =80;
#define BUF_SIZE 65536
void getip(char *url)
{
struct sockaddr_in pin;
struct hostent *nlp_host;
int sd=0;
int len=0;
int i,count=0;
int recv_start=0,recv_end=0;
char buf[BUF_SIZE]={0},myurl[100]={0};
char host[100]={0}, GET[100]={0},header[240]={0};
char *pHost = 0;
///get the host name and the relative address from url name!!!
strcpy(myurl,url);
for(pHost = myurl;*pHost !='/'&& *pHost!='\0';++pHost);
if((int)(pHost-myurl)==strlen(myurl))
strcpy(GET,"/");
else
strcpy(GET,pHost);
*pHost = '\0';
strcpy(host,myurl);
printf("%s \n %s \n",host,GET);
///setting socket param
if((nlp_host = gethostbyname(host)) == 0)
{
printf("error get host\n");
exit(1);
}
bzero(&pin,sizeof(pin));
pin.sin_family = AF_INET;
pin.sin_addr.s_addr = htonl(INADDR_ANY);
pin.sin_addr.s_addr = ((struct in_addr *)(nlp_host->h_addr))->s_addr;
pin.sin_port = htons(port);
if((sd = socket(AF_INET,SOCK_STREAM,0))== -1)
{
printf("Error opening socket!!!\n");
exit(1);
}
///together the request info that will be sent to web server
///Note: the blank and enter key byte is necessary,please remember!!!
strcat(header,"GET");
strcat(header," ");
strcat(header,GET);
strcat(header," ");
strcat(header,"HTTP/1.1\r\n");
strcat(header,"HOST:");
strcat(header,host);
strcat(header,"\r\n");
strcat(header,"ACCEPT:*/*");
strcat(header,"\r\nConnection: close\r\n\r\n\r\n");
///connect to the webserver,send the header,and receive the web sourcecode
if(connect(sd,(void *)&pin,sizeof(pin)) == -1)
printf("error connect to socket\n");
if(send(sd,header,strlen(header),0) == -1)
{
printf("error in send \n");
exit(1);
}
///send the message and wait the response!!!
len=recv(sd,buf,BUF_SIZE,0);
if(len<0)
printf("receive data error!!!\n");
else
printf("%s",buf);
close(sd);
}
int main()
{
char url[256];
printf("http://");
scanf("%s",url);
getip(url);
return 0;
}
///NOTE: test by dotafox on RedHat 9.0 OS with make 3.79 &gcc-2.95.3
///use: gcc -o iesource iesource.c
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