/**
* @brief Processes traffic received on UDP port 69
* @param args: pointer on tftp_connection arguments
* @param upcb: pointer on udp_pcb structure
* @param pbuf: pointer on packet buffer
* @param addr: pointer on the receive IP address
* @param port: receive port number
* @retval None
*/
static void IAP_tftp_recv_callback(void *arg, struct udp_pcb *upcb, struct pbuf *pkt_buf,
struct ip_addr *addr, u16_t port)
{
tftp_opcode op;
struct udp_pcb *upcb_tftp_data;
err_t err;
#ifdef USE_LCD
uint32_t i;
char filename[40],message[40], *ptr;
#endif
/* create new UDP PCB structure */
upcb_tftp_data = udp_new();
if (!upcb_tftp_data)
{
/* Error creating PCB. Out of Memory */
#ifdef USE_LCD
LCD_ErrLog("Can not create pcb \n");
#endif
return;
}
/* bind to port 0 to receive next available free port */
/* NOTE: This is how TFTP works. There is a UDP PCB for the standard port
* 69 which al transactions begin communication on, however, _all_ subsequent
* transactions for a given "stream" occur on another port */
err = udp_bind(upcb_tftp_data, IP_ADDR_ANY, 0);
if (err != ERR_OK)
{
/* Unable to bind to port */
#ifdef USE_LCD
LCD_ErrLog("Can not create pcb \n");
#endif
return;
}
op = IAP_tftp_decode_op(pkt_buf->payload);
if (op != TFTP_WRQ)
{
/* remove PCB */
#ifdef USE_LCD
LCD_ErrLog("Bad TFTP opcode \n");
#endif
udp_remove(upcb_tftp_data);
}
else
{
#ifdef USE_LCD
ptr = pkt_buf->payload;
ptr = ptr +2;
/*extract file name info */
i= 0;
while (*(ptr+i)!=0x0)
{
i++;
}
strncpy(filename, ptr, i+1);
LCD_UsrLog("IAP using TFTP \n");
sprintf(message, "File: %s",filename);
LCD_UsrLog("%s\n", message);
LCD_UsrLog(" State: Erasing...\n");
#endif
/* Start the TFTP write mode*/
IAP_tftp_process_write(upcb_tftp_data, addr, port);
}
pbuf_free(pkt_buf);
}
/**
* @brief Processes traffic received on UDP port 69
* @param args: pointer on tftp_connection arguments
* @param upcb: pointer on udp_pcb structure
* @param pbuf: pointer on packet buffer
* @param addr: pointer on the receive IP address
* @param port: receive port number
* @retval none
*/
static void IAP_tftp_recv_callback(void *arg, struct udp_pcb *upcb, struct pbuf *pkt_buf,
struct ip_addr *addr, u16_t port)
{
tftp_opcode op;
struct udp_pcb *upcb_tftp_data;
err_t err;
#ifdef USE_LCD
uint32_t i;
char filename[40],message[40], *ptr;
#endif
/* create new UDP PCB structure */
upcb_tftp_data = udp_new();
if (!upcb_tftp_data)
{
udp_lcd_y += UPDATE_WORD_SIZE + UPDATE_ROW_DISTANCE;
lcd_font24(udp_lcd_x,udp_lcd_y,COLOR_POINT,COLOR_BACK,"> ÒÔÌ«ÍøÉý¼¶³ö´íÁË¡£´íÎó´úÂ룺6",UPDATE_FONT);
UDP_AddUpdateError();
// /* Error creating PCB. Out of Memory */
// #ifdef USE_LCD
// LCD_SetTextColor(Red);
// LCD_DisplayStringLine(Line9, (uint8_t*)"Can not create pcb");
// #endif
return;
}
/* bind to port 0 to receive next available free port */
/* NOTE: This is how TFTP works. There is a UDP PCB for the standard port
* 69 which al transactions begin communication on, however, _all_ subsequent
* transactions for a given "stream" occur on another port */
err = udp_bind(upcb_tftp_data, IP_ADDR_ANY, 0);
if (err != ERR_OK)
{
udp_lcd_y += UPDATE_WORD_SIZE + UPDATE_ROW_DISTANCE;
lcd_font24(udp_lcd_x,udp_lcd_y,COLOR_POINT,COLOR_BACK,"> ÒÔÌ«ÍøÉý¼¶³ö´íÁË¡£´íÎó´úÂ룺7",UPDATE_FONT);
UDP_AddUpdateError();
// /* Unable to bind to port */
// #ifdef USE_LCD
// LCD_SetTextColor(Red);
// LCD_DisplayStringLine(Line9, (uint8_t*)"Can not bind pcb");
// #endif
return;
}
op = IAP_tftp_decode_op(pkt_buf->payload);
if (op != TFTP_WRQ)
{
udp_lcd_y += UPDATE_WORD_SIZE + UPDATE_ROW_DISTANCE;
lcd_font24(udp_lcd_x,udp_lcd_y,COLOR_POINT,COLOR_BACK,"> ÒÔÌ«ÍøÉý¼¶³ö´íÁË¡£´íÎó´úÂ룺8",UPDATE_FONT);
UDP_AddUpdateError();
// /* remove PCB */
// #ifdef USE_LCD
// LCD_SetTextColor(Red);
// LCD_DisplayStringLine(Line9, (uint8_t*)"Bad TFTP opcode ");
// #endif
udp_remove(upcb_tftp_data);
}
else
{
// #ifdef USE_LCD
// ptr = pkt_buf->payload;
// ptr = ptr +2;
// /*extract file name info */
// i= 0;
// while (*(ptr+i)!=0x0)
// {
// i++;
// }
// strncpy(filename, ptr, i+1);
//
// /* Set the LCD Text Color */
// LCD_SetTextColor(White);
// LCD_Clear(Black);
//
// LCD_DisplayStringLine(Line0, (uint8_t*)" IAP using TFTP ");
// sprintf(message, "File: %s",filename);
// LCD_DisplayStringLine(Line3, (uint8_t*)message);
// /* Set the LCD Text Color */
// LCD_DisplayStringLine(Line8, (uint8_t*)"State: Erasing...");
//
// #endif
/* Start the TFTP write mode*/
IAP_tftp_process_write(upcb_tftp_data, addr, port);
}
pbuf_free(pkt_buf);
}
