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Allow further seek back incase of really long comment.

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This commit is contained in:
Nathan Moinvaziri 2018-11-08 14:56:14 -08:00
parent b08bd9a3fa
commit 286a8174f6
1 changed files with 5 additions and 2 deletions
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7
mz_zip.c
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@ -112,17 +112,20 @@ typedef struct mz_zip_s
/***************************************************************************/
// Locate the end of central directory of a zip file (at the end, just before the global comment)
// Locate the end of central directory
static int32_t mz_zip_search_eocd(void *stream, int64_t *central_pos)
{
int64_t file_size = 0;
int64_t max_back = UINT16_MAX; // maximum size of global comment
int64_t max_back = 0;
uint8_t find[4] = MZ_ZIP_MAGIC_ENDHEADERU8;
int32_t err = MZ_OK;
err = mz_stream_seek(stream, 0, MZ_SEEK_END);
file_size = mz_stream_tell(stream);
// maximum seek is size of global comment + extra
max_back = UINT16_MAX + 128;
if (max_back > file_size)
max_back = file_size;