1 /* 2 * (C) Copyright 2007 3 * Heiko Schocher, DENX Software Engineering, <hs@denx.de> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <unistd.h> 27 #include <fcntl.h> 28 #include <errno.h> 29 #include <string.h> 30 #include <sys/mman.h> 31 #include <sys/stat.h> 32 #include "sha1.h" 33 34 #ifndef __ASSEMBLY__ 35 #define __ASSEMBLY__ /* Dirty trick to get only #defines */ 36 #endif 37 #include <config.h> 38 #undef __ASSEMBLY__ 39 40 #ifndef O_BINARY /* should be define'd on __WIN32__ */ 41 #define O_BINARY 0 42 #endif 43 44 #ifndef MAP_FAILED 45 #define MAP_FAILED (-1) 46 #endif 47 48 extern int errno; 49 50 extern void sha1_csum (unsigned char *input, int ilen, unsigned char output[20]); 51 52 int main (int argc, char **argv) 53 { 54 unsigned char output[20]; 55 int i, len; 56 57 char *imagefile; 58 char *cmdname = *argv; 59 unsigned char *ptr; 60 unsigned char *data; 61 struct stat sbuf; 62 unsigned char *ptroff; 63 int ifd; 64 int off; 65 66 if (argc > 1) { 67 imagefile = argv[1]; 68 ifd = open (imagefile, O_RDWR|O_BINARY); 69 if (ifd < 0) { 70 fprintf (stderr, "%s: Can't open %s: %s\n", 71 cmdname, imagefile, strerror(errno)); 72 exit (EXIT_FAILURE); 73 } 74 if (fstat (ifd, &sbuf) < 0) { 75 fprintf (stderr, "%s: Can't stat %s: %s\n", 76 cmdname, imagefile, strerror(errno)); 77 exit (EXIT_FAILURE); 78 } 79 len = sbuf.st_size; 80 ptr = (unsigned char *)mmap(0, len, 81 PROT_READ, MAP_SHARED, ifd, 0); 82 if (ptr == (unsigned char *)MAP_FAILED) { 83 fprintf (stderr, "%s: Can't read %s: %s\n", 84 cmdname, imagefile, strerror(errno)); 85 exit (EXIT_FAILURE); 86 } 87 88 /* create a copy, so we can blank out the sha1 sum */ 89 data = malloc (len); 90 memcpy (data, ptr, len); 91 off = SHA1_SUM_POS; 92 ptroff = &data[len + off]; 93 for (i = 0; i < SHA1_SUM_LEN; i++) { 94 ptroff[i] = 0; 95 } 96 97 sha1_csum ((unsigned char *) data, len, (unsigned char *)output); 98 99 printf ("U-Boot sum:\n"); 100 for (i = 0; i < 20 ; i++) { 101 printf ("%02X ", output[i]); 102 } 103 printf ("\n"); 104 /* overwrite the sum in the bin file, with the actual */ 105 lseek (ifd, SHA1_SUM_POS, SEEK_END); 106 if (write (ifd, output, SHA1_SUM_LEN) != SHA1_SUM_LEN) { 107 fprintf (stderr, "%s: Can't write %s: %s\n", 108 cmdname, imagefile, strerror(errno)); 109 exit (EXIT_FAILURE); 110 } 111 112 free (data); 113 (void) munmap((void *)ptr, len); 114 (void) close (ifd); 115 } 116 117 return EXIT_SUCCESS; 118 } 119