In some cases, the allocated array into which the data will be read is using getArrayCount() to allocate itself, which should be safe, but some cases use fixed length arrays or compute the array size before reading, which could overflow if the stream is compromised.
To prevent that from happening, I added a check that will verify that the number of bytes to read will not exceed the capacity of the input buffer argument passed to all the read...Array() functions.
I chose to use the byte array for this initial version, so that "size" represents the same value across all read...Array() functions, but I could also use the element count, if it is preferred.
Note : readPointArray and writePointArray are unused, so I could also remove them
BUG=
R=reed@google.com, mtklein@google.com, senorblanco@chromium.org
Author: sugoi@chromium.org
Review URL: https://codereview.chromium.org/37803002
git-svn-id: http://skia.googlecode.com/svn/trunk@12058 2bbb7eff-a529-9590-31e7-b0007b416f81
and deserialization for encoding and decoding bitmaps.
Remove kForceFlattenBitmapPixels_Flag, which is no longer used.
When an SkOrderedReadBuffer needs to read a bitmap, if it does not
have an image decoder, use a dummy bitmap.
In GM, add a tolerance option for color differences, used when
testing picture serialization, so it can assume two images are the
same even though PNG encoding/decoding may have resulted in small
differences.
Create dummy implementations for SkImageDecoder and SkImageEncoder
functions in SkImageDecoder_empty so that a project that does not
want to include the images project it can still build.
Allow ports to build without images project.
In Mac's image encoder, copy 4444 to 8888 before encoding.
Add SkWriter32::reservePad, to provide a pointer to write non 4 byte
aligned data, padded with zeroes.
In bench_ and render_ pictures, pass decode function to SkPicture
creation from a stream.
BUG=https://code.google.com/p/skia/issues/detail?id=842
Review URL: https://codereview.appspot.com/6551071
git-svn-id: http://skia.googlecode.com/svn/trunk@5818 2bbb7eff-a529-9590-31e7-b0007b416f81
Refactor Picture and Pipe bitmap storage into common data structure
Update SkFlattenable buffers to be more modular.
This CL is an effort to stage the conversion to named
parameters for all SkFlattenable commands. This particular
stage only does the following two things...
1. Move flattenable buffers from SkFlattenable.h into
their own header.
2. Update and Add new read write methods for better clarity
and convenience.
BUG=
Review URL: https://codereview.appspot.com/6445079
git-svn-id: http://skia.googlecode.com/svn/trunk@4994 2bbb7eff-a529-9590-31e7-b0007b416f81
This CL is an effort to stage the conversion to named
parameters for all SkFlattenable commands. This particular
stage only does the following two things...
1. Move flattenable buffers from SkFlattenable.h into
their own header.
2. Update and Add new read write methods for better clarity
and convenience.
BUG=
Review URL: https://codereview.appspot.com/6448095
git-svn-id: http://skia.googlecode.com/svn/trunk@4980 2bbb7eff-a529-9590-31e7-b0007b416f81
