125 lines
2.5 KiB
C
125 lines
2.5 KiB
C
/*
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* creates LOAD/Flash images for Siemens SE505
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*
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* (c) 01/2005 Olaf Rempel <razzor at kopf minus tisch dot de>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/types.h>
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#include "trxhdr.h"
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extern u_int32_t chksum_crc32(unsigned char *block, unsigned int length);
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extern void chksum_crc32gentab();
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int main(int argc, char *argv[]) {
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struct trx_header trx;
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int i, cnt;
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FILE *fp;
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char *buf;
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if (argc <= 1) {
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printf("USAGE: gen_image file.trx file.trx ... > outfile\n");
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exit(-1);
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}
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// this is.. ugly, but works :)
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if ((buf = malloc(FILE_MAX_LEN)) == NULL) {
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perror("malloc");
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exit(-1);
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}
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// init main header
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memset(&trx, 0, sizeof(struct trx_header));
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trx.magic = FILE_MAGIC;
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// copy header
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memcpy(buf, &trx, sizeof(struct trx_header));
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cnt = sizeof(struct trx_header);
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for (i = 1; i < argc; i++) {
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// open file
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if ((fp = fopen(argv[i], "r")) < 0) {
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perror(argv[i]);
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free(buf);
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exit(-1);
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}
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// read header
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if ((cnt = fread(&trx, 1, sizeof(struct trx_header), fp)) < 0) {
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perror(argv[i]);
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fclose(fp);
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free(buf);
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exit(-1);
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} else if (cnt < sizeof(struct trx_header)) {
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fprintf(stderr, "Truncated file: %s\n", argv[i]);
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fclose(fp);
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free(buf);
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exit(-1);
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} else if (trx.magic == TRX_MAGIC) {
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if (trx.len > TRX_MAX_LEN || trx.len < sizeof(struct trx_header)) {
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fprintf(stderr, "Bad TRX Header: %s\n", argv[i]);
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fclose(fp);
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free(buf);
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exit(-1);
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}
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} else if (trx.magic == PMON_MAGIC) {
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if (trx.len > PMON_MAX_LEN || trx.len < sizeof(struct trx_header)) {
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fprintf(stderr, "Bad PMON Header: %s\n", argv[i]);
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fclose(fp);
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free(buf);
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exit(-1);
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}
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} else if (trx.magic == NVAR_MAGIC) {
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if (trx.len > NVRAM_MAX_LEN || trx.len < sizeof(struct trx_header)) {
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fprintf(stderr, "Bad NVRAM Header: %s\n", argv[i]);
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fclose(fp);
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free(buf);
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exit(-1);
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}
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} else {
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fprintf(stderr, "Unknown Header Type: %s\n", argv[i]);
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fclose(fp);
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free(buf);
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exit(-1);
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}
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// copy header
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memcpy(buf + cnt, &trx, sizeof(struct trx_header));
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cnt += sizeof(struct trx_header);
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// copy file to buffer
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while (!feof(fp))
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cnt += fread(buf + cnt, 1, 65536, fp);
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// close file
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fclose(fp);
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}
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chksum_crc32gentab();
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// copy main header again
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memcpy(&trx, buf, sizeof(struct trx_header));
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trx.len = cnt;
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// create chksum without first 3 fields
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trx.crc32 = chksum_crc32(buf +12, cnt);
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memcpy(buf, &trx, sizeof(struct trx_header));
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// flush to output
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write(1, buf, cnt);
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free(buf);
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return 0;
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}
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