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/* Routines for parsing an ipacces SDP firmware file */
/* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct sdp_firmware {
char magic[4];
char more_magic[4];
unsigned int header_length;
unsigned int file_length;
char sw_part[20];
char text1[122];
u_int8_t no_idea_1[4];
char text2[64];
char time[8];
u_int8_t no_idea_2[4];
char date[8];
u_int8_t no_idea_3[6];
/* stuff i don't know */
} __attribute__((packed));
/* more magic, the second "int" in the header */
static char more_magic[] = { 0x10, 0x02, 0x00, 0x0 };
static void analyze_file(int fd)
{
struct sdp_firmware *firmware_header;
char buf[4096];
int rc;
rc = read(fd, buf, sizeof(*firmware_header));
if (rc < 0) {
perror("can not read header");
return;
}
firmware_header = (struct sdp_firmware *) &buf[0];
if (strncmp(firmware_header->magic, " SDP", 4) != 0) {
fprintf(stderr, "Wrong magic.\n");
return;
}
if (memcmp(firmware_header->more_magic, more_magic, 4) != 0) {
fprintf(stderr, "Wrong more magic.\n");
return;
}
printf("Printing header information:\n");
printf("header_length: %u\n", ntohl(firmware_header->header_length));
printf("file_length: %u\n", ntohl(firmware_header->file_length));
printf("sw_part: %.20s\n", firmware_header->sw_part);
printf("text1: %.122s\n", firmware_header->text1);
printf("text2: %.64s\n", firmware_header->text2);
printf("time: %.8s\n", firmware_header->time);
printf("date: %.8s\n", firmware_header->date);
}
int main(int argc, char** argv)
{
int i, fd;
for (i = 1; i < argc; ++i) {
printf("Opening possible firmware '%s'\n", argv[i]);
fd = open(argv[i], O_RDONLY);
if (!fd) {
perror("nada");
continue;
}
analyze_file(fd);
}
return EXIT_SUCCESS;
}
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