Hi,
Ok, if you have little knowledge of C, no need to try to apply
the patch.
You would need a compiler, some libraries, set-up the
environment, configure, build, install...
I'll install a Windows binaries and try your configuration.
Should be easy to reproduce.
The syntax you have used is correct (Z:/bla/bla/). AFAIK, the
internals of httpd (the APR library to be precise) already
translate the '/' (Linux style) in '\' (Windows style).
My proposal was just based on information taken from Microsoft
doc (search for "When opening a volume or removable media drive
(for example, a floppy disk drive or flash memory thumb drive),
..." near the end of
https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilew).
Because, at some point, on Windows, 'CreteFileW()' is called.
Just 2 words on the patch.
When a configuration file is parsed, when a '<IfFile ...>'
directive is found, all lines up to the corresponding
</Iffile> are discarded.
To do that the function, we call 'apr_stat()' which gives
information on a file (size, name, dates...). In the specific
case, no information is requested. This is unusual. Usually we ask
for size only, or "standard" information.
The patch just changes the requirement from "do not return
anything" to "return size file only".
However, asking for no information *should still work*. The
function should tell us that the file exists or not, without any
details on the file itself, if found.
My point is that using it this way, is unusual. This could hide a
corner case (read: bug in the APR underlying library)
I've had in my todo list for a long time to setup a test
environment for Windows. It could be a good occasion to do it. Or
you could try with the supplier of a Windows binary (Steffen from
Apache lounge is following closely the project and could be of
help). Reproduce the issue with their binaries and report to issue
to them as well.
Finally, I put back the mailing list in copy, should anyone have
an opinion on it
CJ
Le 23/08/2019 à 14:12, Heather Lotz a
écrit :
Also, it would be helpful to know the expected syntax to use in
<IfFile> once the patch is applied.
For instance, does the patch expect
<IfFile
"/z/files/development/ApacheSmokeSignal.txt">
and the purpose of
the patch is to execute the code within the <IfFile>
tags?
Or does the patch
expect
<IfFile
"Z:/files/development/ApacheSmokeSignal.txt">
and the patch will
allow the code within the <IfFile> tags to execute as it
would on a Linux machine?
I opened the patch file in Notepad++ but don't understand the
contents.
Hello Christophe - Thank-you for the reply. Can you please
provide some instructions about how to apply the patch?
Heather
Le 23/08/2019 à 05:04,
Heather Lotz a écrit :
After some more testing, it seems that this syntax -
<IfFile
"Z:/files/development/ApacheSmokeSignal.txt">
is the root cause of Apache not starting when the
external storage device, mapped to Z:, is detached
from the Windows 10 PC.
I tested these variants individually, which are more
*nix like -
<IfFile
"Z/files/development/ApacheSmokeSignal.txt">
<IfFile
"/Z/files/development/ApacheSmokeSignal.txt">
<IfFile
"/z/files/development/ApacheSmokeSignal.txt">
and the behavior is Apache starts whether or not Z: is
attached to the PC, so that is a step in the right
direction. However, the code within the
<IfFile> tags never executes because when
localhost:8080/miscellaneous/ is entered in a browser
it always returns a 404 error.
Another test was this -
<IfFile
"/c/Users/heather.lotz/Documents/_user_files/test.txt">
which points to an existing file which is not stored
on Z:. The behavior here was the same as that of the
3 *nix like tests. Apache starts whether or not Z: is
attached to the PC but code within the <IfFile>
tags is not executed because localhost:8080/miscellaneous/
returns a 404 error.
Does this constitute a bug of <IfFile> when used
on a Windows OS?
A new file was created on Z: for the sole purpose
of having a designated file for Apache to seek.
The file is called Z:\files\development\ApacheSmokeSignal.txt.
Here is what httpd-vhosts.conf looks like now:
<IfFile
"Z:/files/development/ApacheSmokeSignal.txt">
<VirtualHost *:8080>
DocumentRoot "Z:/files/xampp/htdocs"
<Directory "Z:/files/xampp/htdocs">
Options Indexes
Require all granted
</Directory>
</VirtualHost>
</IfFile>
With this update in place, Apache starts fine when
Z: is attached to the PC. However, when Z: is not
attached to the PC Apache does not start and these
lines appear in the XAMPP Control Panel console:
9:30:24 PM [Apache] Attempting to start
Apache app...
9:30:24 PM [Apache] Status change detected:
running
9:30:26 PM [Apache] Status change detected:
stopped
9:30:26 PM [Apache] Error: Apache shutdown
unexpectedly.
9:30:26 PM [Apache] This may be due to a
blocked port, missing dependencies,
9:30:26 PM [Apache] improper privileges, a
crash, or a shutdown by another method.
9:30:26 PM [Apache] Press the Logs button
to view error logs and check
9:30:26 PM [Apache] the Windows Event
Viewer for more clues
9:30:26 PM [Apache] If you need more help,
copy and post this
9:30:26 PM [Apache] entire log window on
the forums
There are no entries in error.log with a Wed Aug
21 21:30 or later timestamp.
Is the syntax incorrect? Note that Apache is
installed in this location on the PC in
question: C:\xampp\apache.
On Wed, Aug 21,
2019 at 8:21 PM Heather Lotz
<knot22@xxxxxxxxxxx> wrote:
>
> Greetings,
>
> In my development environment on a
Windows 10 PC I have added the following
to Apache's configuration files -
>
> To httpd.conf:
> Listen 8080
>
> To httpd-vhosts.conf:
> <VirtualHost *:8080>
> DocumentRoot
"Z:/files/xampp/htdocs"
> <Directory
"Z:/files/xampp/htdocs">
> Options Indexes
> Require all granted
> </Directory>
> </VirtualHost>
>
> Note that Z: is mapped to an external
storage device.
>
> With this setup, Apache successfully
accesses C: on port 80 and Z: on port
8080. However, if the external storage
device is not attached to the computer,
Apache will not start. Is there a way to
check if Z: is present, and only create
the virtual host if that device is plugged
in so that Apache always starts? If so,
how can this be achieved?
Try <IfFile>
https://httpd.apache.org/docs/2.4/mod/core.html#iffile
--
Eric Covener
covener@xxxxxxxxx
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Hi,
would you have the opportunity to test the attached
patch?
The 0 passed to apr_stat looks spurious to me. (but
should work)
(Pure speculation)
Also, based on Microsoft doc, could you also try:
<IfFile "\\.\Z:">
...
and
<IfFile "\\.\Z:\">
...
CJ
