110768 - Mozilla does not check handles of loaded plugins

Status: VERIFIED DUPLICATE of bug 110781

(Core Graveyard :: Plug-ins, defect)

Description

[tenthumbs]

If you symlink a plugin with another name, mozilla seems to notice;
about:plugins shows only one instance. However, if you use a hard link,
about:plugins shows two instances.

On Linux, loading the same library (the same file system object,
actually) by different names returns the same handle. I would think
mozilla should check the handles from PR_LoadLibrary for duplicates.

Comment 1

[Peter Lubczynski]

I think the larger, XP problem here is that we need to do a deep comparison
between plugins found at scan time. I need to open another bug and mark this
depends.

Comment 2

[tenthumbs]

Sure. Just remember that symlinks and hard links are not XP so an XP 
solution may not work.

Comment 3

[Peter Lubczynski]

Right, but this check will happen at a completely different level than at the
filesystem. We already have all the info about the name, description and mime
handlers of a plugin cached in our registry from the last time we loaded. Before
"picking up" (and therfore appears in about:plugins), this plugin information
will be compared to find true plugin duplicates, not just based on filename.

Comment 4

[Peter Lubczynski]

Actually, this is really a dup of bug 110781. Should be fixed in tomorrow build.

*** This bug has been marked as a duplicate of 110781 ***

Comment 5

[shrirang khanzode]

mass duplicate verifications . For filtering purposes, pls use keywd
"massdupverification"