Fix potential PNG decompression DOS#1060

Merged

hugovk merged 5 commits into

python-pillow:masterfrom

wiredfool:png-dos

Dec 31, 2014

Commits on Dec 29, 2014

Fix for zlib.decompression bomb in iTXt,zTXt, and iCCP chunks
wiredfool
committed
Test change -- different representation for invalid compressed object
wiredfool
committed

Commits on Dec 30, 2014

Limit total text chunk size to 64k
wiredfool
committed

Commits on Dec 31, 2014