You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.9 KiB
85 lines
2.9 KiB
![]()
6 years ago
|
diff --git a/src/softmagic.c b/src/softmagic.c
|
||
|
index f848f94..ee979b9 100644
|
||
|
--- a/src/softmagic.c
|
||
|
+++ b/src/softmagic.c
|
||
|
@@ -50,7 +50,7 @@ private int32_t mprint(struct magic_set *, struct magic *);
|
||
|
private int32_t moffset(struct magic_set *, struct magic *);
|
||
|
private void mdebug(uint32_t, const char *, size_t);
|
||
|
private int mcopy(struct magic_set *, union VALUETYPE *, int, int,
|
||
|
- const unsigned char *, uint32_t, size_t, size_t);
|
||
|
+ const unsigned char *, uint32_t, size_t, struct magic *);
|
||
|
private int mconvert(struct magic_set *, struct magic *);
|
||
|
private int print_sep(struct magic_set *, int);
|
||
|
private int handle_annotation(struct magic_set *, struct magic *);
|
||
|
@@ -936,7 +936,7 @@ mdebug(uint32_t offset, const char *str, size_t len)
|
||
|
|
||
|
private int
|
||
|
mcopy(struct magic_set *ms, union VALUETYPE *p, int type, int indir,
|
||
|
- const unsigned char *s, uint32_t offset, size_t nbytes, size_t linecnt)
|
||
|
+ const unsigned char *s, uint32_t offset, size_t nbytes, struct magic *m)
|
||
|
{
|
||
|
/*
|
||
|
* Note: FILE_SEARCH and FILE_REGEX do not actually copy
|
||
|
@@ -956,15 +956,24 @@ mcopy(struct magic_set *ms, union VALUETYPE *p, int type, int indir,
|
||
|
const char *last; /* end of search region */
|
||
|
const char *buf; /* start of search region */
|
||
|
const char *end;
|
||
|
- size_t lines;
|
||
|
+ size_t lines, linecnt, bytecnt;
|
||
|
|
||
|
+ linecnt = m->str_range;
|
||
|
+ bytecnt = linecnt * 80;
|
||
|
+
|
||
|
+ if (bytecnt == 0) {
|
||
|
+ bytecnt = 8192;
|
||
|
+ }
|
||
|
+ if (bytecnt > nbytes) {
|
||
|
+ bytecnt = nbytes;
|
||
|
+ }
|
||
|
if (s == NULL) {
|
||
|
ms->search.s_len = 0;
|
||
|
ms->search.s = NULL;
|
||
|
return 0;
|
||
|
}
|
||
|
buf = RCAST(const char *, s) + offset;
|
||
|
- end = last = RCAST(const char *, s) + nbytes;
|
||
|
+ end = last = RCAST(const char *, s) + bytecnt;
|
||
|
/* mget() guarantees buf <= last */
|
||
|
for (lines = linecnt, b = buf; lines && b < end &&
|
||
|
((b = CAST(const char *,
|
||
|
@@ -977,7 +986,7 @@ mcopy(struct magic_set *ms, union VALUETYPE *p, int type, int indir,
|
||
|
b++;
|
||
|
}
|
||
|
if (lines)
|
||
|
- last = RCAST(const char *, s) + nbytes;
|
||
|
+ last = RCAST(const char *, s) + bytecnt;
|
||
|
|
||
|
ms->search.s = buf;
|
||
|
ms->search.s_len = last - buf;
|
||
|
@@ -1050,7 +1059,6 @@ mget(struct magic_set *ms, const unsigned char *s,
|
||
|
int recursion_level)
|
||
|
{
|
||
|
uint32_t offset = ms->offset;
|
||
|
- uint32_t count = m->str_range;
|
||
|
union VALUETYPE *p = &ms->ms_value;
|
||
|
|
||
|
if (recursion_level >= 20) {
|
||
|
@@ -1058,7 +1066,7 @@ mget(struct magic_set *ms, const unsigned char *s,
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
- if (mcopy(ms, p, m->type, m->flag & INDIR, s, offset, nbytes, count) == -1)
|
||
|
+ if (mcopy(ms, p, m->type, m->flag & INDIR, s, offset, (uint32_t)nbytes, m) == -1)
|
||
|
return -1;
|
||
|
|
||
|
if ((ms->flags & MAGIC_DEBUG) != 0) {
|
||
|
@@ -1546,7 +1554,7 @@ mget(struct magic_set *ms, const unsigned char *s,
|
||
|
if (m->flag & INDIROFFADD) {
|
||
|
offset += ms->c.li[cont_level-1].off;
|
||
|
}
|
||
|
- if (mcopy(ms, p, m->type, 0, s, offset, nbytes, count) == -1)
|
||
|
+ if (mcopy(ms, p, m->type, 0, s, offset, nbytes, m) == -1)
|
||
|
return -1;
|
||
|
ms->offset = offset;
|
||
|
|