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#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include "fileutils.h"
#include "generic.h"
#define THRESHOLD 2000
int main(int argc, char ** argv) {
int h, n, o, i, p, c, pp, b;
verbosity = M_INFO;
if (argc != 2) {
printm(M_BARE, "Usage: search-script <file>\n");
exit(-1);
}
if ((h = open(argv[1], O_RDONLY)) < 0) {
printm(M_ERROR, "Error opening file %s\n", argv[1]);
exit(-1);
}
printm(M_STATUS, "Reading informations from %s...\n", argv[1]);
read(h, &n, 4);
o = n;
n -= 4;
n /= 8;
printm(M_INFO, "Script claims to have %i texts.\n", n);
if (n > THRESHOLD) {
printm(M_ERROR, "Too much texts to make sense.\n");
exit(-1);
}
printm(M_STATUS, "Reading index.\n");
pp = -1;
for (i = 0; i < n; i++) {
lseek(h, i * 8 + 4, SEEK_SET);
read(h, &c, 4);
read(h, &p, 4);
printm(M_INFO, "Index #%i has pointer %i and counter %i\n", i, p, c);
if (pp > p) {
printm(M_ERROR, "Script's text overlapping.\n");
exit(-1);
}
if (((unsigned int)(p + o)) > filesize(h)) {
printm(M_ERROR, "Text bigger than script.\n");
exit(-1);
}
lseek(h, p + o - 1, SEEK_SET);
b = 0;
read(h, &b, 1);
if (b) {
printm(M_ERROR, "Byte before the pointer is not 0 (%i = 0x%02x)\n", b, b);
exit(-1);
}
pp = p;
}
printm(M_STATUS, "Script seems ok to me.\n");
exit(0);
}
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