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Posted to bugs@httpd.apache.org by bu...@apache.org on 2006/09/07 13:43:19 UTC
DO NOT REPLY [Bug 40432] New: - Charset of date on error pages
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Summary: Charset of date on error pages
Product: Apache httpd-2
Version: 2.2.2
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Core
AssignedTo: bugs@httpd.apache.org
ReportedBy: egmont@uhulinux.hu
The error text (e.g. "Objekt nicht gefunden" and its longer explanation) is
presented in the language the client requests. Its character set is defined for
every language by the error templates Apache provides.
However, in the footer, the date is shown in the language and charset
corresponding to the locale on the server side, with no character set
conversion.
As a result, if these two character sets do not match, the date will be shown
with wrong accented characters.
For example, suppose Apache runs with LC_ALL=fr_FR.UTF-8 and the client
requests French language. The header of the returned page will define the ISO-
8859-1 charset (taken from the error templates), but the date will be put there
with UTF-8, hence it appears as "double UTF-8". Stranger results (even invalid
byte sequences) can occur with other combination of the two languages (e.g. the
server may run with hu_HU while the client requests Japanese...)
Suggested solutions:
- [I'd prefer this one] Convert all error templates to UTF-8, and modify Apache
to convert the date string received from libc (strftime() I guess) from the
current locale to UTF-8.
or
- Modify Apache to convert the date string received from libc from the current
locale to &#num; html entities so that they work with any character set. [I
hate html entities anyway and I see no reason not to use bare UTF-8.]
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DO NOT REPLY [Bug 40432] - Charset of date on error pages
Posted by bu...@apache.org.
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jorton@redhat.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|Core |Documentation
------- Additional Comments From jorton@redhat.com 2006-09-07 12:00 -------
For both this and bug 40431 the problem is basically the same: the locale is a
process-global setting which cannot be changed per-request, and changing it to
match an Accept-Language/Charset-supplied values would probably be a nightmare
anyway.
I think the right fix for this is to simply remove the date from the error
pages. It's not particularly useful and this complaint is not unreasonable.
[in glibc there are locale-specific interfaces which can use non-global locale
context but being able to use these in httpd would be nearly impossible without
designing a set of essentially glibc-specific interfaces]
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DO NOT REPLY [Bug 40432] - Charset of date on error pages
Posted by bu...@apache.org.
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------- Additional Comments From egmont@uhulinux.hu 2006-09-07 12:18 -------
Well, instead of removing the date, you could perhaps format it using numbers
only (e.g. 2006/09/07 14:15 +0200) or format in English using a built-in table
of English month and weekday names (hence not using libc's localized names).
I know about this newlocale()/uselocale()/*_l() stuff, but that's really glibc-
specific and requires a quite recent glibc, too. So it'd really be a bad
approach for apache. I didn't realize when submitting the bug that apache is a
multi-thread app so using setlocale() around strftime() isn't safe.
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DO NOT REPLY [Bug 40432] - Charset of date on error pages
Posted by bu...@apache.org.
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slive@apache.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
------- Additional Comments From slive@apache.org 2007-07-31 12:49 -------
The date has been removed from the error pages.
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DO NOT REPLY [Bug 40432] - Charset of date on error pages
Posted by bu...@apache.org.
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------- Additional Comments From jorton@redhat.com 2006-09-07 12:00 -------
*** Bug 40431 has been marked as a duplicate of this bug. ***
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