/*---------------------------------------------------------------------------*/ 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(); }