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Fix 32-bit build warnings

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This commit is contained in:
Přemysl Eric Janouch 2023-06-23 13:34:59 +02:00
parent 2dc4e9c13b
commit 4f57070e27
Signed by: p
GPG Key ID: A0420B94F92B9493
2 changed files with 11 additions and 5 deletions
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6
fiv-io.c
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@ -1263,7 +1263,7 @@ parse_mpf_index_ifd(struct tiffer *T)
static bool
parse_mpf(
GPtrArray *individuals, const uint8_t *mpf, size_t len, const uint8_t *end)
GPtrArray *individuals, const uint8_t *mpf, size_t len, size_t total_len)
{
struct tiffer T;
if (!tiffer_init(&T, mpf, len) || !tiffer_next_ifd(&T))
@ -1274,7 +1274,7 @@ parse_mpf(
uint32_t *offsets = parse_mpf_index_ifd(&T);
if (offsets) {
for (const uint32_t *o = offsets; *o; o++)
if (*o <= end - mpf)
if (*o <= total_len)
g_ptr_array_add(individuals, (gpointer) mpf + *o);
free(offsets);
}
@ -1378,7 +1378,7 @@ parse_jpeg_metadata(const char *data, size_t len, struct jpeg_metadata *meta)
if (meta->mpf && marker == APP2 && p - payload >= 8 &&
!memcmp(payload, "MPF\0", 4) && !meta->mpf->len) {
payload += 4;
parse_mpf(meta->mpf, payload, p - payload, end);
parse_mpf(meta->mpf, payload, p - payload, end - payload);
}
// TODO(p): Extract the main XMP segment.

10
tiffer.h
View File

@ -156,12 +156,18 @@ tiffer_next_ifd(struct tiffer *self)
return tiffer_u16(self, &self->remaining_fields);
}
static size_t
tiffer_length(const struct tiffer *self)
{
return self->begin > self->end ? 0 : self->end - self->begin;
}
/// Initialize a derived TIFF reader for a subIFD at the given location.
static bool
tiffer_subifd(
const struct tiffer *self, uint32_t offset, struct tiffer *subreader)
{
if (self->begin > self->end || self->end - self->begin < offset)
if (tiffer_length(self) < offset)
return false;
*subreader = *self;
@ -332,7 +338,7 @@ tiffer_next_entry(struct tiffer *self, struct tiffer_entry *entry)
if (values_size <= sizeof offset) {
entry->p = self->p;
self->p += sizeof offset;
} else if (tiffer_u32(self, &offset) && self->end - self->begin >= offset) {
} else if (tiffer_u32(self, &offset) && tiffer_length(self) >= offset) {
entry->p = self->begin + offset;
} else {
return false;