On Tue, 11 Mar 2025 21:26:23 GMT, Harshitha Onkar <hon...@openjdk.org> wrote:
>> Built-in Profiles are singleton objects and if the user happens to modify
>> this shared profile object via setData() then the modified version of the
>> profile is returned each time the same built-in profile is requested via
>> getInstance().
>>
>> It is good to protect Built-in profiles from such direct modification by
>> adding BuiltIn profile check in `setData()` such that **only copies** of
>> Built-In profiles are allowed to be updated.
>>
>> With the proposed fix, if Built-In profile is updated using `.setData()` it
>> throws _**IAE - "BuiltIn profile cannot be modified"**_
>>
>> There are no restrictions on creating copies of BuiltIn profile and then
>> modifying it, but what is being restricted with this fix is - the direct
>> modification of the shared BuiltIn profile instance.
>>
>> Applications which need a modified version of the ICC Profile should instead
>> do the following:
>>
>>
>> byte[] profileData = ICC_Profile.getData() // get the byte array
>> representation of BuiltIn- profile
>> ICCProfile newProfile = ICC_Profile.getInstance(profileData) // create a new
>> profile
>> newProfile.setData() // to modify and customize the profile
>>
>>
>> Following existing tests are modified to update a copy of Built-In profile.
>>
>> - java/awt/color/ICC_Profile/SetHeaderInfo.java
>> - java/awt/color/ICC_ProfileSetNullDataTest.java
>> - sun/java2d/cmm/ProfileOp/SetDataTest.java
>
> Harshitha Onkar has updated the pull request incrementally with one
> additional commit since the last revision:
>
> redudant stmt removed
test/jdk/java/awt/color/ICC_Profile/BuiltInProfileCheck.java line 40:
> 38:
> 39: public static void main(String[] args) {
> 40: System.out.println("CASE 1: Testing BuiltIn Profile");
I suggest to add the cases when both(BuiltIn and Custom) profiles are tested
after serialisation->deserialisation.
test/jdk/java/awt/color/ICC_Profile/BuiltInProfileCheck.java line 50:
> 48:
> 49: private static void updateProfile(boolean isBuiltIn) {
> 50: ICC_Profile builtInProfile =
> ICC_Profile.getInstance(ColorSpace.CS_sRGB);
It would be good to check all types of BuiltIn profiles to prove that it works
in case we decide to implement/change some them differently(w/o cache for
example).
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/23606#discussion_r2006354501
PR Review Comment: https://git.openjdk.org/jdk/pull/23606#discussion_r2006355768
