Bug 156991 – Uncaught Exception: SecurityError: DOM Exception 18: An attempt was made to break through the security policy of the user agent.

• Status: RESOLVED
• Resolution: FIXED
• Component: Web Inspector

[Zach Li]

-------
Auto-generated details:

Inspected URL:        (unknown)
Loading completed:    false
Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/602.1.30+ (KHTML, like Gecko)
Uncaught exceptions:
 - SecurityError: DOM Exception 18: An attempt was made to break through the security policy of the user agent. (at Setting.js:61:44)
 - ReferenceError: Can't find variable: InspectorBackend (at InspectorBackendCommands.js:32:17)
 - ReferenceError: Can't find variable: InspectorBackend (at Main.js:59:25)
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* STEPS TO REPRODUCE
1. What were you doing? Include setup or other preparations to reproduce the exception.
2. Include explicit, accurate, and minimal steps taken. Do not include extraneous or irrelevant steps.

* NOTES
Document any additional information that might be useful in resolving the problem, such as screen shots or other included attachments.

[Zach Li]

(In reply to comment #0)
> -------
> Auto-generated details:
> 
> Inspected URL:        (unknown)
> Loading completed:    false
> Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5)
> AppleWebKit/602.1.30+ (KHTML, like Gecko)
> Uncaught exceptions:
>  - SecurityError: DOM Exception 18: An attempt was made to break through the
> security policy of the user agent. (at Setting.js:61:44)
>  - ReferenceError: Can't find variable: InspectorBackend (at
> InspectorBackendCommands.js:32:17)
>  - ReferenceError: Can't find variable: InspectorBackend (at Main.js:59:25)
> -------
> 
> * STEPS TO REPRODUCE
> 1. What were you doing? Include setup or other preparations to reproduce the
> exception.

I was trying to inspect Safari Extensions Preferences.

I installed AnySearch extension.

> 2. Include explicit, accurate, and minimal steps taken. Do not include
> extraneous or irrelevant steps.
> 
> * NOTES
> Document any additional information that might be useful in resolving the
> problem, such as screen shots or other included attachments.

[Radar WebKit Bug Importer]

<rdar://problem/25913475>

[Joseph Pecoraro]

In Safari's Privacy settings what is your "Cookies and website data setting"? If it is blocking this is a known bug (and a duplicate of others). If it is not, then it is a new issue.

[Zach Li]

(In reply to comment #3)
> In Safari's Privacy settings what is your "Cookies and website data
> setting"? If it is blocking this is a known bug (and a duplicate of others).
> If it is not, then it is a new issue.

"Allow from websites I visit"

[Timothy Hatcher]

*** This bug has been marked as a duplicate of bug 154448 ***

[Zach Li]

Hi Timothy,

Why did you mark this bug as a duplicate of bug 154448?

In my previous reply, my Cookies and website data setting is "Allow from websites I visit". Also, I tried changing it to "Always allow", still encountering the same problem.

[Joseph Pecoraro]

Created attachment 277427 [details]
[PATCH] Proposed Fix

[WebKit Commit Bot]

Comment on attachment 277427 [details]
[PATCH] Proposed Fix

Clearing flags on attachment: 277427

Committed r200119: <http://trac.webkit.org/changeset/200119>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.