/* for each new request (data in p->payload) from addr:port,
* create a new port to serve the response, and start the response
* process
*/
void process_tftp_request(struct pbuf *pkt_buf, struct ip_addr *addr, u16_t port)
{
tftp_opcode op = tftp_decode_op(pkt_buf->payload);
char FileName[30];
struct udp_pcb *upcb;
err_t err;
u32_t IPaddress;
u8_t iptxt[20];
volatile u8_t iptab[4];
IPaddress = addr->addr;
printf("\n\rTFTP RRQ (read request) from: %d.%d.%d.%d\n\r", (u8_t)(IPaddress),
(u8_t)(IPaddress >> 8),(u8_t)(IPaddress >> 16),(u8_t)(IPaddress >> 24));
/* read its IP address */
iptab[0] = (u8_t)(IPaddress >> 24);
iptab[1] = (u8_t)(IPaddress >> 16);
iptab[2] = (u8_t)(IPaddress >> 8);
iptab[3] = (u8_t)(IPaddress);
sprintf((char*)iptxt, "TFTP: %d.%d.%d.%d ", iptab[3], iptab[2], iptab[1], iptab[0]);
LCD_DisplayStringLine(Line7, iptxt);
/* create new UDP PCB structure */
upcb = udp_new();
if (!upcb)
{ /* Error creating PCB. Out of Memory */
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, IP_ADDR_ANY, 0);
if (err != ERR_OK)
{ /* Unable to bind to port */
return;
}
switch (op)
{
case TFTP_RRQ: /* TFTP RRQ (read request) */
/* Read the name of the file asked by the client
to be sent from the SD card */
tftp_extract_filename(FileName, pkt_buf->payload);
printf("\n\rTFTP RRQ (read request)");
printf("\n\rONLY EFS filesystem(NTFS in WinXp) is support");
/* If Could not open filesystem */
if (efs_init(&efs1, 0) != 0)
{
printf("\n\rIf Could not open filesystem");
return;
}
printf("\n\rCould open filesystem\n\r");
/* If Could not open the selected directory */
if (ls_openDir(&list1, &(efs1.myFs), "/") != 0)
{
printf("\n\rIf Could not open the selected directory");
return;
}
/* Start the TFTP read mode*/
printf("\n\rStart the TFTP read mode....");
tftp_process_read(upcb, addr, port, FileName);
break;
case TFTP_WRQ: /* TFTP WRQ (write request) */
/* Read the name of the file asked by the client
to received and writen in the SD card */
tftp_extract_filename(FileName, pkt_buf->payload);
/* If Could not open filesystem */
if (efs_init(&efs2, 0) != 0)
{
return;
}
/* If Could not open the selected directory */
if (ls_openDir(&list2, &(efs2.myFs), "/") != 0)
{
return;
}
/* Start the TFTP write mode*/
tftp_process_write(upcb, addr, port, FileName);
break;
default:
/* sEndTransfera generic access violation message */
tftp_send_error_message(upcb, addr, port, TFTP_ERR_ACCESS_VIOLATION);
/* TFTP unknown request op */
/* no need to use tftp_cleanup_wr because no
"tftp_connection_args" struct has been malloc'd */
udp_remove(upcb);
break;
}
}
/**
* @brief processes the tftp request on port 69
* @param pkt_buf: pointer on received pbuf
* @param ip_addr: pointer on source IP address
* @param port: pointer on source udp port
* @retval None
*/
void process_tftp_request(struct pbuf *pkt_buf, struct ip_addr *addr, u16_t port)
{
tftp_opcode op = tftp_decode_op(pkt_buf->payload);
char FileName[30];
struct udp_pcb *upcb;
err_t err;
/* create new UDP PCB structure */
upcb = udp_new();
if (!upcb)
{
/* Error creating PCB. Out of Memory */
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, IP_ADDR_ANY, 0);
if (err != ERR_OK)
{
/* Unable to bind to port */
return;
}
switch (op)
{
case TFTP_RRQ:/* TFTP RRQ (read request) */
{
/* Read the name of the file asked by the client to be sent from the SD card */
tftp_extract_filename(FileName, pkt_buf->payload);
_CONSOLE(LogId, "TFTP_RRQ:%s\n", FileName);
/* could not open filesystem */
if (f_mount(&filesystem, "", 0) != FR_OK)
{
return;
}
/* could not open the selected directory */
if (f_opendir(&dir_1, "/") != FR_OK)
{
return;
}
/* Start the TFTP read mode*/
tftp_process_read(upcb, addr, port, FileName);
break;
}
case TFTP_WRQ: /* TFTP WRQ (write request) */
{
/* Read the name of the file asked by the client to be received and writen in the SD card */
tftp_extract_filename(FileName, pkt_buf->payload);
_CONSOLE(LogId, "TFTP_WRQ:%s\n", FileName);
/* Could not open filesystem */
if (f_mount(&filesystem, "", 0) != FR_OK)
{
return;
}
/* If Could not open the selected directory */
if (f_opendir(&dir_2, "/") != FR_OK)
{
return;
}
/* Start the TFTP write mode*/
tftp_process_write(upcb, addr, port, FileName);
break;
}
default: /* TFTP unknown request op */
/* send generic access violation message */
tftp_send_error_message(upcb, addr, port, TFTP_ERR_ACCESS_VIOLATION);
udp_remove(upcb);
break;
}
}
/* for each new request (data in p->payload) from addr:port,
* create a new port to serve the response, and start the response
* process
*/
void process_tftp_request(struct pbuf *pkt_buf, struct ip_addr *addr, u16_t port)
{
tftp_opcode op = tftp_decode_op(pkt_buf->payload);
char FileName[30];
struct udp_pcb *upcb;
err_t err;
/* create new UDP PCB structure */
upcb = udp_new();
if (!upcb)
{ /* Error creating PCB. Out of Memory */
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, IP_ADDR_ANY, 0);
if (err != ERR_OK)
{ /* Unable to bind to port */
return;
}
switch (op)
{
case TFTP_RRQ: /* TFTP RRQ (read request) */
/* Read the name of the file asked by the client to be sent from the SD card */
tftp_extract_filename(FileName, pkt_buf->payload);
/* If Could not open filesystem */
if (efs_init(&efs1, 0) != 0)
{
return;
}
/* If Could not open the selected directory */
if (ls_openDir(&list1, &(efs1.myFs), "/") != 0)
{
return;
}
/* Start the TFTP read mode*/
tftp_process_read(upcb, addr, port, FileName);
break;
case TFTP_WRQ: /* TFTP WRQ (write request) */
/* Read the name of the file asked by the client to received and writen in the SD card */
tftp_extract_filename(FileName, pkt_buf->payload);
/* If Could not open filesystem */
if (efs_init(&efs2, 0) != 0)
{
return;
}
/* If Could not open the selected directory */
if (ls_openDir(&list2, &(efs2.myFs), "/") != 0)
{
return;
}
/* Start the TFTP write mode*/
tftp_process_write(upcb, addr, port, FileName);
break;
default:
/* sEndTransfera generic access violation message */
tftp_send_error_message(upcb, addr, port, TFTP_ERR_ACCESS_VIOLATION);
/* TFTP unknown request op */
/* no need to use tftp_cleanup_wr because no "tftp_connection_args" struct has been malloc'd */
udp_remove(upcb);
break;
}
}
