contiki/tools/blaster/blaster.c

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/*
* Copyright (c) 2014, Lars Schmertmann <SmallLars@t-online.de>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <uuid/uuid.h>
#include <libconfig.h>
#include <time.h>
#include <qrencode.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "blaster.h"
char *anschars = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_-";
/* ---------------------------------------------------------------------------- */
FILE *openFile(const char *name, const char *appendix, const char *mode);
void writeStandardConfig();
void writeImg(FILE *file, unsigned char *data, int width);
/* ---------------------------------------------------------------------------- */
int
main(int nArgs, char **argv)
{
unsigned int c, i, config;
unsigned int buf[64];
if(nArgs < 2) {
writeStandardConfig();
fprintf(stderr, "Missing parameter: ./blaster <config.cfg> [<config.cfg> <config.cfg> ...]\n");
fprintf(stderr, "Configuration template was created ib config.cfg.\n");
exit(EXIT_FAILURE);
}
/* qrdata = "UUID:PSK\0" */
char qrdata[54];
qrdata[36] = ':';
qrdata[53] = '\0';
config_t cfg;
for(config = 1; config < nArgs; config++) {
config_init(&cfg);
config_setting_t *setting;
const char *str_val;
if(access(argv[config], F_OK) == 0) {
config_read_file(&cfg, argv[config]);
} else {
fprintf(stderr, "Unable to read config file.\n");
exit(EXIT_FAILURE);
}
fprintf(stdout, "Working on %s ... ", argv[config]);
config_lookup_string(&cfg, "input", &str_val);
FILE *in_bin = openFile(str_val, ".bin", "r");
config_lookup_string(&cfg, "output", &str_val);
FILE *out_bin = openFile(str_val, ".bin", "w");
FILE *out_txt = openFile(str_val, ".txt", "w");
FILE *out_pbm = openFile(str_val, ".pbm", "w");
char output[131072];
for(i = 8; (c = fgetc(in_bin)) != EOF; i++) {
output[i] = (unsigned char)c;
}
/* Set original length of firmware in little endian format ------------------- */
unsigned int length = i - 8;
memcpy(output + 4, (const void *)&length, 4);
fprintf(out_txt, "Length: %u = 0x%08x\n", length, length);
/* Fill additional flash with zeros for initialisation */
for(; i < 0x1F000; i++) {
output[i] = 0x00;
}
/* Example: Write an CoRE-Link-Answer for CoAP -------------------------------- */
char *buffer = "</d/name>;rt=\"dev.info\";if=\"core.rp\","
"</d/model>;rt=\"dev.info\";if=\"core.rp\","
"</d/uuid>;rt=\"dev.info\";if=\"core.rp\"";
memcpy(output + RES_D_CORE, buffer, LEN_D_CORE);
/* Contiki configuration ------------------------------------------------------ */
output[RES_CONFIG + 0] = 0x22;
output[RES_CONFIG + 1] = 0x13;
output[RES_CONFIG + 2] = 1;
output[RES_CONFIG + 3] = 0;
setting = config_lookup(&cfg, "eui");
for(i = 0; i < 8; i++) {
output[RES_CONFIG + 8 + i] = config_setting_get_int_elem(setting, 7 - i);
}
fprintf(out_txt,
"EUI: %02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x\n",
(uint8_t)output[RES_CONFIG + 15],
(uint8_t)output[RES_CONFIG + 14],
(uint8_t)output[RES_CONFIG + 13],
(uint8_t)output[RES_CONFIG + 12],
(uint8_t)output[RES_CONFIG + 11],
(uint8_t)output[RES_CONFIG + 10],
(uint8_t)output[RES_CONFIG + 9],
(uint8_t)output[RES_CONFIG + 8]
);
output[RES_CONFIG + 16] = 15;
output[RES_CONFIG + 17] = 17;
output[RES_CONFIG + 18] = 0;
output[RES_CONFIG + 19] = 0;
output[RES_CONFIG + 20] = 5;
output[RES_CONFIG + 21] = 0;
output[RES_CONFIG + 22] = 0;
output[RES_CONFIG + 23] = 0;
/* Example: Set UUID ---------------------------------------------------------- */
config_lookup_string(&cfg, "uuid", &str_val);
memcpy(qrdata, str_val, 36);
unsigned char uuid_bin[16];
uuid_parse(str_val, uuid_bin);
for(i = 0; i < 16; i++) {
output[RES_UUID + i] = uuid_bin[i];
}
fprintf(out_txt, "UUID: %s\n", str_val);
/* Example: Set PSK ----------------------------------------------------------- */
config_lookup_string(&cfg, "psk", &str_val);
memcpy(qrdata + 37, str_val, 16);
for(i = 0; i < 16; i++) {
output[RES_PSK + i] = str_val[i];
}
fprintf(out_txt, "PSK: %.*s\n", 16, str_val);
memcpy(output + RES_ANSCHARS, anschars, LEN_ANSCHARS);
/* Example: ECC base point and order for secp256r1 ---------------------------- */
uint32_t *base_x = (uint32_t *)(output + RES_ECC_BASE_X);
base_x[0] = 0xd898c296;
base_x[1] = 0xf4a13945;
base_x[2] = 0x2deb33a0;
base_x[3] = 0x77037d81;
base_x[4] = 0x63a440f2;
base_x[5] = 0xf8bce6e5;
base_x[6] = 0xe12c4247;
base_x[7] = 0x6b17d1f2;
uint32_t *base_y = (uint32_t *)(output + RES_ECC_BASE_Y);
base_y[0] = 0x37bf51f5;
base_y[1] = 0xcbb64068;
base_y[2] = 0x6b315ece;
base_y[3] = 0x2bce3357;
base_y[4] = 0x7c0f9e16;
base_y[5] = 0x8ee7eb4a;
base_y[6] = 0xfe1a7f9b;
base_y[7] = 0x4fe342e2;
uint32_t *order = (uint32_t *)(output + RES_ECC_ORDER);
order[0] = 0xFC632551;
order[1] = 0xF3B9CAC2;
order[2] = 0xA7179E84;
order[3] = 0xBCE6FAAD;
order[4] = 0xFFFFFFFF;
order[5] = 0xFFFFFFFF;
order[6] = 0x00000000;
order[7] = 0xFFFFFFFF;
/* Example: Set name ---------------------------------------------------------- */
config_lookup_string(&cfg, "name", &str_val);
snprintf(output + RES_NAME, LEN_NAME, "%s", str_val);
fprintf(out_txt, "Name: %s\n", str_val);
/* Example: Set model---------------------------------------------------------- */
config_lookup_string(&cfg, "model", &str_val);
snprintf(output + RES_MODEL, LEN_MODEL, "%s", str_val);
fprintf(out_txt, "Model: %s\n", str_val);
/* Example: Set time ---------------------------------------------------------- */
time_t my_time = time(NULL);
memcpy(output + RES_FLASHTIME, (void *)&my_time, LEN_FLASHTIME);
struct tm *timeinfo = localtime(&my_time);
fwrite(buf, 1, strftime((char *)buf, 64, "Created on %d.%m.%Y um %H:%M:%S", timeinfo), out_txt);
/* Output result -------------------------------------------------------------- */
for(i = 4; i < 0x1F000; i++) {
fputc(output[i], out_bin);
}
/* Generate QR-Code ----------------------------------------------------------- */
QRcode *code = QRcode_encodeString8bit(qrdata, 3, QR_ECLEVEL_L);
writeImg(out_pbm, code->data, code->width);
fclose(in_bin);
fclose(out_bin);
fclose(out_txt);
fclose(out_pbm);
fprintf(stdout, "DONE\n");
}
exit(EXIT_SUCCESS);
}
/* ---------------------------------------------------------------------------- */
FILE *
openFile(const char *name, const char *appendix, const char *mode)
{
char filename[64];
sprintf(filename, "%s%s", name, appendix);
FILE *file = fopen(filename, mode);
if(file == NULL) {
perror("Wasn't able to open file.");
exit(EXIT_FAILURE);
}
return file;
}
void
writeStandardConfig()
{
unsigned int i;
config_t cfg;
config_init(&cfg);
config_setting_t *setting;
config_setting_t *root = config_root_setting(&cfg);
setting = config_setting_add(root, "input", CONFIG_TYPE_STRING);
config_setting_set_string(setting, "dff_econotag");
setting = config_setting_add(root, "output", CONFIG_TYPE_STRING);
config_setting_set_string(setting, "dff_e_econotag");
uint8_t eui[8] = { 0x02, 0x00, 0x00, 0x00, 0x12, 0x34, 0x56, 0x78 };
config_setting_t *array = config_setting_add(root, "eui", CONFIG_TYPE_ARRAY);
for(i = 0; i < 8; ++i) {
setting = config_setting_add(array, NULL, CONFIG_TYPE_INT);
config_setting_set_format(setting, CONFIG_FORMAT_HEX);
config_setting_set_int(setting, eui[i]);
}
unsigned char uuid_bin[16];
uuid_generate(uuid_bin);
char uuid[37];
uuid_unparse(uuid_bin, uuid);
setting = config_setting_add(root, "uuid", CONFIG_TYPE_STRING);
config_setting_set_string(setting, uuid);
char psk[17];
psk[16] = '\0';
FILE *fd = fopen("/dev/urandom", "r");
if(fd == NULL) {
perror("Wasn't able to open /dev/urandom: ");
return;
}
for(i = 0; i < 16; i++) {
int c;
while((c = fgetc(fd)) == EOF) ;
psk[i] = anschars[c % 64];
}
if(fclose(fd) == -1) {
perror("Wasn't able to close /dev/urandom: ");
}
setting = config_setting_add(root, "psk", CONFIG_TYPE_STRING);
config_setting_set_string(setting, psk);
setting = config_setting_add(root, "name", CONFIG_TYPE_STRING);
config_setting_set_string(setting, "Blaster Standard Device");
setting = config_setting_add(root, "model", CONFIG_TYPE_STRING);
config_setting_set_string(setting, "Model 1234 for testing purposes only");
config_write_file(&cfg, "config.cfg");
}
void
writeImg(FILE *file, unsigned char *data, int width)
{
unsigned int buf[width];
fprintf(file, "P4\n# %s\n%3u %3u\n", "QR-Code", width * 32, width * 32);
int x, y;
for(y = 0; y < width; y++) {
for(x = 0; x < width; x++) {
if(data[(y * width) + x] & 0x01) {
buf[x] = 0xFFFFFFFF;
} else {
buf[x] = 0x00000000;
}
}
for(x = 0; x < 32; x++) {
fwrite(buf, 4, width, file);
}
}
}