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[devel] also check for negative out-of-range text compression mode

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Glenn Randers-Pehrson 2010-10-13 07:31:14 -05:00
parent e34f80e5aa
commit 79b2d64a67
1 changed files with 4 additions and 3 deletions
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7
pngset.c
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@ -677,14 +677,15 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr,
if (text_ptr[i].key == NULL)
continue;
key_len = png_strlen(text_ptr[i].key);
if (text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE ||
text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
{
png_warning(png_ptr, "text compression mode is out of range");
continue;
}
key_len = png_strlen(text_ptr[i].key);
if (text_ptr[i].compression <= 0)
{
lang_len = 0;