/*---------------------------------------------------------------------------*/
static void request_recv(struct runicast_conn *c, const rimeaddr_t *from, uint8_t seqno)
{
const char *filename;
uint8_t seq;
if(packetbuf_datalen() < 2) {
printf("download: bad filename request (null)\n");
return;
}
seq = ((uint8_t *)packetbuf_dataptr())[0];
if(seq == req_last_seq) {
printf("download: ignoring duplicate request\n");
return;
}
req_last_seq = seq;
filename = ((char *)packetbuf_dataptr()) + 1;
printf("file requested: '%s'\n", filename);
/* Initiate file transfer */
leds_on(LEDS_GREEN);
if(fd >= 0) {
cfs_close(fd);
}
fd = cfs_open(filename, CFS_READ);
if(fd < 0) {
printf("download: bad filename request (no read access): %s\n", filename);
}
rucb_close(&rucb);
rucb_open(&rucb, RUCB_CHANNEL, &rucb_call);
rucb_send(&rucb, from);
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(shell_download_process, ev, data)
{
const char *nextptr;
static rimeaddr_t addr;
int len;
char buf[32];
PROCESS_BEGIN();
/* Parse node addr */
addr.u8[0] = shell_strtolong(data, &nextptr);
if(nextptr == data || *nextptr != '.') {
shell_output_str(&download_command,
"download <node addr> <filename>: need node address", "");
PROCESS_EXIT();
}
++nextptr;
addr.u8[1] = shell_strtolong(nextptr, &nextptr);
/* Get the length of the file, excluding a terminating NUL character. */
while(nextptr[0] == ' ') {
nextptr++;
}
len = strlen(nextptr);
/*snprintf(buf, sizeof(buf), "%d.%d", addr.u8[0], addr.u8[1]);*/
/*shell_output_str(&download_command, "Downloading from: ", buf);*/
if(len > PACKETBUF_SIZE - 32) {
snprintf(buf, sizeof(buf), "%d", len);
shell_output_str(&download_command, "filename too large: ", buf);
PROCESS_EXIT();
}
/*shell_output_str(&download_command, "Downloading file: ", nextptr);*/
/* Send file request */
downloading = 1;
rucb_open(&rucb, RUCB_CHANNEL, &rucb_call);
packetbuf_clear();
*((uint8_t *)packetbuf_dataptr()) = ++req_seq_counter;
memcpy(((char *)packetbuf_dataptr()) + 1, nextptr, len + 1);
packetbuf_set_datalen(len + 2);
PRINTF("requesting '%s'\n", nextptr);
runicast_send(&runicast, &addr, MAX_RETRANSMISSIONS);
/* Wait for download to finish */
leds_on(LEDS_BLUE);
PROCESS_WAIT_UNTIL(!runicast_is_transmitting(&runicast) && !downloading);
leds_off(LEDS_BLUE);
rucb_close(&rucb);
/*shell_output_str(&download_command, "Done!", "");*/
PROCESS_END();
}
