int http_session(int* connect_fd,struct sockaddr_in * client_addr)
{
char recv_buf[RECV_BUFFER_SIZE+1];
unsigned char send_buf[SEND_BUFFER_SIZE+1];
unsigned char file_buf[FILE_MAX_SIZE+1];
memset(recv_buf,'\0',sizeof(recv_buf));
memset(send_buf,'\0',sizeof(send_buf));
memset(file_buf,'\0',sizeof(file_buf));
char uri_buf[URI_SIZE+1];
memset(uri_buf,'\0',sizeof(uri_buf));
int maxfd=*connect_fd+1;
fd_set read_set;
FD_ZERO(&read_set);
struct timeval timeout;
timeout.tv_sec=TIME_OUT_SEC;
timeout.tv_usec=TIME_OUT_USEC;
int flag=1;
int res=0;
int read_bytes=0;
int send_bytes=0;
int file_size=0;
char * mime_type;
int uri_status;
FD_SET(*connect_fd,&read_set);
while(flag)
{
res=select(maxfd,&read_set,NULL,NULL,&timeout);
switch(res)
{
case -1:
perror("select () error ,in http_session.c");
close(*connect_fd);
return -1;
break;
case 0:
continue;
break;
default:
if(FD_ISSET(*connect_fd,&read_set))
{
memset(recv_buf,'\0',sizeof(recv_buf));
if((read_bytes=recv(*connect_fd,recv_buf,RECV_BUFFER_SIZE,0))==0)
{
return 0;
}else if(read_bytes>0)
{
if(is_http_protocol(recv_buf)==0)
{
fprintf(stderr,"not httlp protocol \n");
close(*connect_fd);
return -1;
}else
{
memset(uri_buf,'\0',sizeof(uri_buf));
if(get_uri(recv_buf,uri_buf)==NULL)
{
uri_status=URI_TOO_LONG;
}
else
{
printf("URI:%s\n",uri_buf);
uri_status=get_uri_status(uri_buf);
switch(uri_status)
{
case FILE_OK:
printf("file ok\n");
mime_type=get_mime_type(uri_buf);
printf("mime type :%s\n",mime_type);
file_size=get_file_disk(uri_buf,file_buf);
send_bytes=reply_normal_information(send_buf,file_buf,file_size,mime_type);
break;
case FILE_NOT_FOUND:
printf("in switch on case FILE_NOT_FOUND\n");
send_bytes=set_error_information(send_buf,FILE_NOT_FOUND);
break;
case FILE_FORBIDEN:
break;
default:
break;
}
send(*connect_fd,send_buf,send_bytes,0);
}
}
}
}
}
}
return 0;
}
int http_session(int *connect_fd, struct sockaddr_in *client_addr)
{
char recv_buf[RECV_BUFFER_SIZE + 1]; /* server socket receive buffer */
unsigned char send_buf[SEND_BUFFER_SIZE + 1]; /* server socket send bufrer */
unsigned char file_buf[FILE_MAX_SIZE + 1];
memset(recv_buf, '\0', sizeof(recv_buf));
memset(send_buf, '\0', sizeof(send_buf));
memset(file_buf, '\0', sizeof(file_buf));
char uri_buf[URI_SIZE + 1]; /* store the the uri request from client */
memset(uri_buf, '\0', sizeof(uri_buf));
int maxfd = *connect_fd + 1;
fd_set read_set;
FD_ZERO(&read_set);
struct timeval timeout;
timeout.tv_sec = TIME_OUT_SEC;
timeout.tv_usec = TIME_OUT_USEC;
int flag = 1;
int res = 0;
int read_bytes = 0;
int send_bytes = 0;
int file_size = 0;
char *mime_type;
int uri_status;
FD_SET(*connect_fd, &read_set);
while(flag)
{
res = select(maxfd, &read_set, NULL, NULL, &timeout);
switch(res)
{
case -1:
perror("select() error. in http_sesseion.c");
close(*connect_fd);
return -1;
break;
case 0: /* time out, continue to select */
continue;
break;
default: /* there are some file-descriptor's status changed */
if(FD_ISSET(*connect_fd, &read_set))
{
memset(recv_buf, '\0', sizeof(recv_buf));
if((read_bytes = recv(*connect_fd, recv_buf, RECV_BUFFER_SIZE, 0)) == 0)
{
/* client close the connection */
return 0;
}
else if(read_bytes > 0) /* there are some data from client */
{
if(is_http_protocol(recv_buf) == 0) /* check is it HTTP protocol */
{
fprintf(stderr, "Not http protocol.\n");
close(*connect_fd);
return -1;
}
else /* http protocol */
{
memset(uri_buf, '\0', sizeof(uri_buf));
if(get_uri(recv_buf, uri_buf) == NULL) /* get the uri from http request head */
{
uri_status = URI_TOO_LONG;
}
else
{
printf("URI:%s\n", uri_buf);
uri_status = get_uri_status(uri_buf);
switch(uri_status)
{
case FILE_OK:
printf("file ok\n");
mime_type = get_mime_type(uri_buf);
printf("mime type: %s\n", mime_type);
file_size = get_file_disk(uri_buf, file_buf);
send_bytes = reply_normal_information(send_buf, file_buf, file_size, mime_type);
// send(*connect_fd, send_buf, send_bytes, 0);
break;
case FILE_NOT_FOUND: /* file not found on server */
printf("in switch on case FILE_NOT_FOUND\n");
send_bytes = set_error_information(send_buf, FILE_NOT_FOUND);
break;
case FILE_FORBIDEN: /* server have no permission to read the request file */
break;
case URI_TOO_LONG: /* the request uri is too long */
break;
default:
break;
}
send(*connect_fd, send_buf, send_bytes, 0);
}
}
}
}
}
}
return 0;
}
