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--- arcio.c.orig 2010-08-07 13:06:42 UTC
+++ arcio.c
@@ -46,7 +46,7 @@ readhdr(hdr, f) /* read a header from
return 0; /* then signal end of archive */
if (hdrver != ARCMARK) { /* check archive validity */
- if (warn) {
+ if (arcwarn) {
printf("An entry in %s has a bad header.\n", arcname);
nerrs++;
}
@@ -67,10 +67,10 @@ readhdr(hdr, f) /* read a header from
if (feof(f) && first)
arcdie("%s is not an archive", arcname);
- if (changing && warn)
+ if (changing && arcwarn)
arcdie("%s is corrupted -- changes disallowed", arcname);
- if (warn)
+ if (arcwarn)
printf(" %d bytes skipped.\n", try);
if (feof(f))
@@ -118,7 +118,8 @@ readhdr(hdr, f) /* read a header from
hdr->crc = (short) ((dummy[22] << 8) + dummy[21]);
for (i = 0, hdr->length=0; i<4; hdr->length<<=8, hdr->length += dummy[26-i], i++);
#endif
-
+ if (hdr->size < 0)
+ arcdie("Invalid header in archive %s", arcname);
if (hdr->date > olddate
|| (hdr->date == olddate && hdr->time > oldtime)) {
olddate = hdr->date;
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