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rpmoffset.c
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C/C++ Source or Header
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2001-04-02
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738b
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24 lines
/* Find how deeply inside an .RPM the real data is */
/* kept, and report the offset in bytes */
/* Wouldn't it be a lot more sane if we could just untar these things? */
#include <stdlib.h>
/* These offsets keep getting bigger, so we're going to just bite a 2MB */
/* chunk of RAM right away so that we have enough. Yeah, horrible */
/* quick and dirty implementation, but hey -- it gets the job done. */
#define RPMBUFSIZ 2097152
main()
{
char *buff = malloc(RPMBUFSIZ),*eb,*p;
for (p = buff, eb = buff + read(0,buff,RPMBUFSIZ); p < eb; p++)
if (*p == '\037' && p[1] == '\213' && p[2] == '\010')
printf("%d\n",p - buff),
exit(0);
exit(1);
}