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| 1 | +/* test-update-server.c |
| 2 | + * |
| 3 | + * Copyright (C) 2006-2019 wolfSSL Inc. |
| 4 | + * |
| 5 | + * This file is part of wolfSSL. (formerly known as CyaSSL) |
| 6 | + * |
| 7 | + * wolfSSL is free software; you can redistribute it and/or modify |
| 8 | + * it under the terms of the GNU General Public License as published by |
| 9 | + * the Free Software Foundation; either version 2 of the License, or |
| 10 | + * (at your option) any later version. |
| 11 | + * |
| 12 | + * wolfSSL is distributed in the hope that it will be useful, |
| 13 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | + * GNU General Public License for more details. |
| 16 | + * |
| 17 | + * You should have received a copy of the GNU General Public License |
| 18 | + * along with this program; if not, write to the Free Software |
| 19 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| 20 | + * |
| 21 | + *============================================================================= |
| 22 | + * |
| 23 | + * OTA Upgrade mechanism implemented using DTLS 1.2 |
| 24 | + * |
| 25 | + */ |
| 26 | + |
| 27 | +#define _XOPEN_SOURCE 600 |
| 28 | + |
| 29 | +#include <stdio.h> /* standard in/out procedures */ |
| 30 | +#include <stdlib.h> /* defines system calls */ |
| 31 | +#include <string.h> /* necessary for memset */ |
| 32 | +#include <netdb.h> |
| 33 | +#include <sys/socket.h> /* used for all socket calls */ |
| 34 | +#include <netinet/in.h> /* used for sockaddr_in6 */ |
| 35 | +#include <arpa/inet.h> |
| 36 | +#include <errno.h> |
| 37 | +#include <unistd.h> |
| 38 | +#include <fcntl.h> |
| 39 | +#include <sys/stat.h> |
| 40 | +#include <termios.h> |
| 41 | +#include <signal.h> |
| 42 | +#include <errno.h> |
| 43 | + |
| 44 | +#define MSGLEN (4 + 4 + 8) |
| 45 | +#define PORT "/dev/ttyS0" |
| 46 | + |
| 47 | +void alarm_handler(int signo) |
| 48 | +{ |
| 49 | + printf("0\n"); |
| 50 | + exit(0); |
| 51 | +} |
| 52 | + |
| 53 | + |
| 54 | + |
| 55 | +int main(int argc, char** argv) |
| 56 | +{ |
| 57 | + struct termios tty; |
| 58 | + int res, serialfd; |
| 59 | + int star = 0; |
| 60 | + int i = 3; |
| 61 | + uint32_t ver = 0; |
| 62 | + sigset(SIGALRM, alarm_handler); |
| 63 | + |
| 64 | + |
| 65 | + if (argc != 1) { |
| 66 | + printf("Usage: %s\n", argv[0]); |
| 67 | + exit(1); |
| 68 | + } |
| 69 | + |
| 70 | + serialfd = open(PORT, O_RDWR | O_NOCTTY); |
| 71 | + tcgetattr(serialfd, &tty); |
| 72 | + cfsetospeed(&tty, B115200); |
| 73 | + cfsetispeed(&tty, B115200); |
| 74 | + tty.c_cflag = (tty.c_cflag & ~CSIZE) | (CS8); |
| 75 | + tty.c_iflag &= ~(IGNBRK | IXON | IXOFF | IXANY| INLCR | ICRNL); |
| 76 | + tty.c_oflag &= ~OPOST; |
| 77 | + tty.c_oflag &= ~(ONLCR|OCRNL); |
| 78 | + tty.c_cflag &= ~(PARENB | PARODD | CSTOPB); |
| 79 | + tty.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); |
| 80 | + tty.c_iflag &= ~ISTRIP; |
| 81 | + tty.c_cc[VMIN] = 0; |
| 82 | + tty.c_cc[VTIME] = 5; |
| 83 | + tcsetattr(serialfd, TCSANOW, &tty); |
| 84 | + |
| 85 | + alarm(30); |
| 86 | + |
| 87 | + while (i >= 0) { |
| 88 | + char c; |
| 89 | + res = read(serialfd, &c, 1); |
| 90 | + if (res <= 0) { |
| 91 | + usleep(10000); |
| 92 | + continue; |
| 93 | + } |
| 94 | + if (!star) { |
| 95 | + if (c == '*') { |
| 96 | + star = 1; |
| 97 | + i = 3; |
| 98 | + } else { |
| 99 | + star = 0; |
| 100 | + } |
| 101 | + } else { |
| 102 | + ver += (((uint32_t)c) << (i-- * 8)); |
| 103 | + } |
| 104 | + } |
| 105 | + printf("%d\n", ver); |
| 106 | + close(serialfd); |
| 107 | + return 0; |
| 108 | +} |
| 109 | + |
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