[Webkit-unassigned] [Bug 83805] New: Nightly Back/Forward no longer calls plug-in's NPP_NewStream

Thu Apr 12 12:14:21 PDT 2012

https://bugs.webkit.org/show_bug.cgi?id=83805

           Summary: Nightly Back/Forward no longer calls plug-in's
                    NPP_NewStream
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Plug-ins
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rsherry at adobe.com

Created an attachment (id=136952)
 --> (https://bugs.webkit.org/attachment.cgi?id=136952&action=review)
Plugin that calls CFShow for each NPP call

When a URL to a plugin (for instance, PDF) is shown, and the user goes Back/Forward, the nightly build no longer calls NPP_NewStream() with the resource for the URL.

Safari 5.1.5 does not have that.

To set up:
* Set up a webserver with the following (this is in etc/apache2/mime.types):
         application/vnd.pluginbug   pluginbug
* put any file with extension .pluginbug so the server can serve it (content doesn't matter)
* decompress and put the attached plug-in into /Library/Internet Plug-ins
* using the nightly build, surf to the URL for the .pluginbug file
* go Back, then Forward

... you will see that NPP_Destroy, NPP_New is called but no NPP_NewStream.  Using Safari, NPP_NewStream is called.

Sample logs below (the plugin calls CFShow so output goes to the console):

================================================================================================
Running Safari with the plugin, going to a pluginbug file:

4/12/12 12:00:54.022 PM [0x0-0x154154].com.apple.Safari: NPP_New
4/12/12 12:00:54.022 PM [0x0-0x154154].com.apple.Safari: NPP_SetWindow
4/12/12 12:00:54.022 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:00:54.022 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:00:54.033 PM [0x0-0x154154].com.apple.Safari: NPP_NewStream
4/12/12 12:00:54.034 PM [0x0-0x154154].com.apple.Safari: NPP_StreamAsFile
4/12/12 12:00:54.034 PM [0x0-0x154154].com.apple.Safari: NPP_DestroyStream
4/12/12 12:00:54.039 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventDrawRect
4/12/12 12:00:54.277 PM [0x0-0x154154].com.apple.Safari: NPP_GetValue 15
4/12/12 12:00:54.914 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged 
4/12/12 12:00:54.915 PM [0x0-0x154154].com.apple.Safari: OFF
4/12/12 12:00:54.915 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged OFF

Back/Forward (notice NPP_StreamAsFile):

4/12/12 12:03:43.647 PM [0x0-0x154154].com.apple.Safari: NPP_Destroy
4/12/12 12:03:44.173 PM [0x0-0x154154].com.apple.Safari: NPP_New
4/12/12 12:03:44.174 PM [0x0-0x154154].com.apple.Safari: NPP_SetWindow
4/12/12 12:03:44.174 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:03:44.175 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:03:44.175 PM [0x0-0x154154].com.apple.Safari: NPP_NewStream
4/12/12 12:03:44.175 PM [0x0-0x154154].com.apple.Safari: NPP_StreamAsFile
4/12/12 12:03:44.176 PM [0x0-0x154154].com.apple.Safari: NPP_DestroyStream
4/12/12 12:03:44.179 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventDrawRect
4/12/12 12:03:44.429 PM [0x0-0x154154].com.apple.Safari: NPP_GetValue 15
4/12/12 12:03:44.653 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventFlagsChanged
4/12/12 12:03:45.830 PM [0x0-0x154154].com.apple.Safari: NPP_HandleEvent NPCocoaEventWindowFocusChanged OFF

================================================================================================
Running the 04/12/2012 nightly build:

4/12/12 12:02:43.490 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:02:43.490 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:02:43.749 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventDrawRect
4/12/12 12:02:44.796 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_Destroy
4/12/12 12:02:44.805 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_New
4/12/12 12:02:44.808 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_SetWindow
4/12/12 12:02:44.808 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:02:44.808 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:02:44.808 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_NewStream
4/12/12 12:02:44.808 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_StreamAsFile
4/12/12 12:02:44.808 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_DestroyStream
4/12/12 12:02:44.811 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventDrawRect
4/12/12 12:02:45.061 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_GetValue 15

Back/forward (Notice *NO* NPP_StreamAsFile)

4/12/12 12:02:49.009 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_Destroy
4/12/12 12:02:49.461 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_New
4/12/12 12:02:49.462 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:02:49.462 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventWindowFocusChanged ON 
4/12/12 12:02:49.462 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_SetWindow
4/12/12 12:02:49.469 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_HandleEvent NPCocoaEventDrawRect
4/12/12 12:02:50.368 PM [0x0-0x15d15d].org.webkit.nightly.WebKit: NPP_GetValue 15
================================================================================================

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