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Fix potential memleak in MPNG_CHUNK_IDAT

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This commit is contained in:
twinaphex 2015-02-17 05:17:24 +01:00
parent 833335464a
commit 651da5f51c
1 changed files with 18 additions and 19 deletions

37
libretro-sdk/formats/mpng/mpng_decode.c

@ -234,32 +234,28 @@ bool png_decode(const void *userdata, size_t len,
goto error;
break;
case MPNG_CHUNK_PLTE:
{
if (chunk.size % 3)
goto error;
if (chunk.size % 3)
goto error;
palette_len = chunk.size / 3;
palette_len = chunk.size / 3;
if (!mpng_read_plte(&ihdr, &chunk, pixels, palette, palette_len))
goto error;
}
if (!mpng_read_plte(&ihdr, &chunk, pixels, palette, palette_len))
goto error;
break;
case MPNG_CHUNK_TRNS:
{
if (format != FMT_ARGB8888 || !pixels || pixels != pixelsat)
goto error;
if (format != FMT_ARGB8888 || !pixels || pixels != pixelsat)
goto error;
if (ihdr.color_type == 2)
{
if (palette_len == 0)
goto error;
goto error;
}
else if (ihdr.color_type == 3)
goto error;
else
if (ihdr.color_type == 2)
{
if (palette_len == 0)
goto error;
goto error;
}
else if (ihdr.color_type == 3)
goto error;
else
goto error;
break;
case MPNG_CHUNK_IDAT:
{
@ -335,6 +331,9 @@ bool png_decode(const void *userdata, size_t len,
out = (uint8_t*)malloc(videofmt_byte_per_pixel(format) * ihdr.width * ihdr.height);
if (!out)
goto error;
/* TODO: deinterlace at random point */
/* run filters */