file/src/softmagic.c

195     const struct buffer *b, size_t offset, int mode, int text,
239 		if (msetoffset(ms, m, &bb, b, offset, cont_level) == -1)
245 		    bb.flen, offset, cont_level,
331 			if (msetoffset(ms, m, &bb, b, offset, cont_level) == -1)
341 				ms->offset +=
353 			    bb.fbuf), bb.flen, offset,
601 		t = ms->offset + sizeof(char);
623 		t = ms->offset + sizeof(short);
646 		t = ms->offset + sizeof(int32_t);
669 		t = ms->offset + sizeof(int64_t);
681 			t = ms->offset + m->vallen;
687 			t = ms->offset + strlen(str);
726 		t = ms->offset + sizeof(uint32_t);
736 		t = ms->offset + sizeof(uint32_t);
745 		t = ms->offset + sizeof(uint64_t);
754 		t = ms->offset + sizeof(uint64_t);
764 		t = ms->offset + sizeof(uint64_t);
784 		t = ms->offset + sizeof(float);
804 		t = ms->offset + sizeof(double);
826 			t = ms->search.offset;
828 			t = ms->search.offset + ms->search.rm_len;
836 		t = ms->offset;
842 		t = ms->offset;
849 		t = ms->offset;
855 		t = ms->offset;
873 		o = CAST(int32_t, (ms->offset + sizeof(char)));
879 		o = CAST(int32_t, (ms->offset + sizeof(short)));
886 		o = CAST(int32_t, (ms->offset + sizeof(int32_t)));
892 		o = CAST(int32_t, (ms->offset + sizeof(int64_t)));
900 			o = ms->offset + m->vallen;
906 			o = CAST(uint32_t, (ms->offset + strlen(p->s)));
920 		o = CAST(int32_t, (ms->offset + sizeof(uint32_t)));
927 		o = CAST(int32_t, (ms->offset + sizeof(uint32_t)));
933 		o = CAST(int32_t, (ms->offset + sizeof(uint64_t)));
939 		o = CAST(int32_t, (ms->offset + sizeof(uint64_t)));
945 		o = CAST(int32_t, (ms->offset + sizeof(float)));
951 		o = CAST(int32_t, (ms->offset + sizeof(double)));
956 			o = CAST(int32_t, ms->search.offset);
959 			    (ms->search.offset + ms->search.rm_len));
964 			o = CAST(int32_t, ms->search.offset);
966 			o = CAST(int32_t, (ms->search.offset + m->vallen));
973 		o = ms->offset;
981 				    "Bad DER offset %d nbytes=%"
990 		o = CAST(int32_t, (ms->offset + 2 * sizeof(uint64_t)));
1329 mdebug(uint32_t offset, const char *str, size_t len)
1331 	(void) fprintf(stderr, "mget/%" SIZE_T_FORMAT "u @%d: ", len, offset);
1339     const unsigned char *s, uint32_t offset, size_t nbytes, struct magic *m)
1349 			if (offset > nbytes)
1350 				offset = CAST(uint32_t, nbytes);
1351 			ms->search.s = RCAST(const char *, s) + offset;
1352 			ms->search.s_len = nbytes - offset;
1353 			ms->search.offset = offset;
1364 			if (s == NULL || nbytes < offset) {
1378 			if (bytecnt == 0 || bytecnt > nbytes - offset)
1379 				bytecnt = nbytes - offset;
1383 			buf = RCAST(const char *, s) + offset;
1384 			end = last = RCAST(const char *, s) + bytecnt + offset;
1403 			ms->search.offset = offset;
1409 			const unsigned char *src = s + offset;
1417 			/* check that offset is within range */
1418 			if (offset >= nbytes)
1445 		p->q = offset;
1449 	if (offset >= nbytes) {
1453 	if (nbytes - offset < sizeof(*p))
1454 		nbytes = nbytes - offset;
1458 	(void)memcpy(p, s + offset, nbytes);
1473 	intmax_t offset;
1477 			offset = lhs & off;
1480 			offset = lhs | off;
1483 			offset = lhs ^ off;
1486 			offset = lhs + off;
1489 			offset = lhs - off;
1492 			offset = lhs * off;
1495 			offset = lhs / off;
1498 			offset = lhs % off;
1502 		offset = lhs;
1504 		offset = ~offset;
1506 	return CAST(uint32_t, offset);
1513 	int32_t offset;
1515 		offset = -m->offset;
1520 			file_error(ms, 0, "negative offset %d at continuation"
1521 			    "level %u", m->offset, cont_level);
1529 			file_magerror(ms, "non zero offset %" SIZE_T_FORMAT
1533 		if (CAST(size_t, m->offset) > b->elen)
1536 		ms->eoffset = ms->offset = CAST(int32_t, b->elen - m->offset);
1538 		offset = m->offset;
1543 			ms->offset = offset;
1546 			ms->offset = ms->eoffset + offset;
1553 		    bb->fbuf, bb->flen, bb->elen, ms->offset, b->fbuf,
1554 		    b->flen, b->elen, offset, cont_level);
1566 	uint32_t offset = ms->offset;
1590 	    CAST(uint32_t, offset + o), CAST(uint32_t, nbytes), m) == -1)
1594 		fprintf(stderr, "mget(type=%d, flag=%#x, offset=%u, o=%"
1597 		    m->type, m->flag, offset, o, nbytes,
1599 		mdebug(offset, RCAST(char *, RCAST(void *, p)),
1611 			    RCAST(const void *, s + offset + off));
1615 				if (OFFSET_OOB(nbytes, offset + off, 1))
1620 				if (OFFSET_OOB(nbytes, offset + off, 2))
1625 				if (OFFSET_OOB(nbytes, offset + off, 2))
1630 				if (OFFSET_OOB(nbytes, offset + off, 2))
1635 				if (OFFSET_OOB(nbytes, offset + off, 4))
1641 				if (OFFSET_OOB(nbytes, offset + off, 4))
1647 				if (OFFSET_OOB(nbytes, offset + off, 4))
1652 				if (OFFSET_OOB(nbytes, offset + off, 4))
1657 				if (OFFSET_OOB(nbytes, offset + off, 8))
1662 				if (OFFSET_OOB(nbytes, offset + off, 8))
1676 			if (OFFSET_OOB(nbytes, offset, 1))
1678 			offset = do_ops(m, SEXT(sgn,8,p->b), off);
1681 			if (OFFSET_OOB(nbytes, offset, 2))
1683 			offset = do_ops(m, SEXT(sgn,16,BE16(p)), off);
1686 			if (OFFSET_OOB(nbytes, offset, 2))
1688 			offset = do_ops(m, SEXT(sgn,16,LE16(p)), off);
1691 			if (OFFSET_OOB(nbytes, offset, 2))
1693 			offset = do_ops(m, SEXT(sgn,16,p->h), off);
1697 			if (OFFSET_OOB(nbytes, offset, 4))
1702 			offset = do_ops(m, SEXT(sgn,32,lhs), off);
1706 			if (OFFSET_OOB(nbytes, offset, 4))
1711 			offset = do_ops(m, SEXT(sgn,32,lhs), off);
1714 			if (OFFSET_OOB(nbytes, offset, 4))
1716 			offset = do_ops(m, SEXT(sgn,32,ME32(p)), off);
1719 			if (OFFSET_OOB(nbytes, offset, 4))
1721 			offset = do_ops(m, SEXT(sgn,32,p->l), off);
1724 			if (OFFSET_OOB(nbytes, offset, 8))
1726 			offset = do_ops(m, SEXT(sgn,64,LE64(p)), off);
1729 			if (OFFSET_OOB(nbytes, offset, 8))
1731 			offset = do_ops(m, SEXT(sgn,64,BE64(p)), off);
1746 			offset += ms->c.li[cont_level - 1].off;
1747 			if (offset == 0) {
1750 					    "indirect *zero* offset\n");
1754 				fprintf(stderr, "indirect +offs=%u\n", offset);
1756 		if (mcopy(ms, p, m->type, 0, s, offset, nbytes, m) == -1)
1758 		ms->offset = offset;
1761 			mdebug(offset, RCAST(char *, RCAST(void *, p)),
1772 		if (OFFSET_OOB(nbytes, offset, 1))
1779 		if (OFFSET_OOB(nbytes, offset, 2))
1798 		if (OFFSET_OOB(nbytes, offset, 4))
1805 		if (OFFSET_OOB(nbytes, offset, 8))
1810 		if (OFFSET_OOB(nbytes, offset, 16))
1817 		if (OFFSET_OOB(nbytes, offset, m->vallen))
1822 		if (nbytes < offset)
1828 			offset += CAST(uint32_t, o);
1829 		if (offset == 0)
1832 		if (nbytes < offset)
1840 		bb.fbuf = s + offset;
1841 		bb.flen = nbytes - offset;
1846 			fprintf(stderr, "indirect @offs=%u[%d]\n", offset, rv);
1854 			    file_printf(ms, F(ms, m->desc, "%u"), offset) == -1)
1868 		if (nbytes < offset)
1883 		rv = match(ms, ml.magic, ml.nmagic, b, offset + o,
2150 			ms->search.offset += idx;
2163 				ms->search.offset += idx;
2211 				ms->search.offset += CAST(size_t, pmatch.rm_so);