System() and ImageMagick

[ph1975@gmail.com]

Hi Folks,

the following problem occured:

i use imagemagick (Version: ImageMagick 6.2.2 05/26/05 Q16 on Fedora
Core 3 Server)
When i manually (on bash) execute:

/usr/bin/convert -size 300x267
/var/www/html/web4/html/_img/_2/b28a3240dffa1ca d3dab0e877a3d7c 5e.jpg
-resize 126x100+0+-6 +profile "*"
/var/www/html/web4/html/_img/_2/_tn/t_b28a3240dffa1 cad3dab0e877a3d 7c5e.jpg

it works. (i am root)

executing the same within a PHP Script with system(... command as shown
above ...);

i get the following output:
convert: unable to open image
`/var/www/html/web4/html/_img/_2/fa1d0a1d407f077 aa98c8498b3e8be 7d.jpg':
Permission denied.


The /var/ folder belongs to root and has chmod 755
/var/www/ has 777 (root),
/var/www/web4/ has 777 (apache --the httpd runs on user
apache:apache),
/var/www/web4/html/ ... till _img/_2/.... has 777 and is
apache:apache.

I really don't get this.... can anyone give me a hint? Even googling
didn't resolve this issue.

THanks a lot,
cheers.
-phil

[Petr Vileta]

Re: System() and ImageMagick

<ph1975@gmail.c omwrote in
news:1157664545 .977103.188170@ e3g2000cwe.goog legroups.com...

Hi Folks,
>
the following problem occured:
>
i use imagemagick (Version: ImageMagick 6.2.2 05/26/05 Q16 on Fedora
Core 3 Server)
When i manually (on bash) execute:
>
/usr/bin/convert -size 300x267
/var/www/html/web4/html/_img/_2/b28a3240dffa1ca d3dab0e877a3d7c 5e.jpg
-resize 126x100+0+-6 +profile "*"
/var/www/html/web4/html/_img/_2/_tn/t_b28a3240dffa1 cad3dab0e877a3d 7c5e.jpg
>
it works. (i am root)
>
executing the same within a PHP Script with system(... command as shown
above ...);
>
i get the following output:
convert: unable to open image
`/var/www/html/web4/html/_img/_2/fa1d0a1d407f077 aa98c8498b3e8be 7d.jpg':
Permission denied.
>
>
The /var/ folder belongs to root and has chmod 755
/var/www/ has 777 (root),
/var/www/web4/ has 777 (apache --the httpd runs on user
apache:apache),
/var/www/web4/html/ ... till _img/_2/.... has 777 and is
apache:apache.
>
I really don't get this.... can anyone give me a hint? Even googling
didn't resolve this issue.
>

I will solve this not long ago :-)
I'm not sure if this is not a security hole but this work for me.
/var/ must have provileges 77x
/var/www/ 77x
/var/www/web4/ 77x
/var/www/web4/html/ 77x

and for all directories the group must be some group where "apache" is a
member of this group.
And at the end you MUST RESTART Apache ;-) because Apache is running using
privileges readed at start time.
--

Petr Vileta, Czech republic
(My server rejects all messages from Yahoo and Hotmail. Send me your mail
from another non-spammer site please.)

[Alvaro G. Vicario]

Re: System() and ImageMagick

*** ph1975@gmail.co m escribió/wrote (7 Sep 2006 14:29:06 -0700):

convert: unable to open image
`/var/www/html/web4/html/_img/_2/fa1d0a1d407f077 aa98c8498b3e8be 7d.jpg':
Permission denied.
>
>
The /var/ folder belongs to root and has chmod 755
/var/www/ has 777 (root),
/var/www/web4/ has 777 (apache --the httpd runs on user
apache:apache),
/var/www/web4/html/ ... till _img/_2/.... has 777 and is
apache:apache.

Sorry if it's too obvious but... what are the permissions of the file
itself?

--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[ph1975@gmail.com]

Re: System() and ImageMagick


Alvaro G. Vicario schrieb:

*** ph1975@gmail.co m escribió/wrote (7 Sep 2006 14:29:06 -0700):

convert: unable to open image
`/var/www/html/web4/html/_img/_2/fa1d0a1d407f077 aa98c8498b3e8be 7d.jpg':
Permission denied.


The /var/ folder belongs to root and has chmod 755
/var/www/ has 777 (root),
/var/www/web4/ has 777 (apache --the httpd runs on user
apache:apache),
/var/www/web4/html/ ... till _img/_2/.... has 777 and is
apache:apache.

>
Sorry if it's too obvious but... what are the permissions of the file
itself?
>
--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[ph1975@gmail.com]

Re: System() and ImageMagick


Alvaro G. Vicario schrieb:

*** ph1975@gmail.co m escribió/wrote (7 Sep 2006 14:29:06 -0700):

convert: unable to open image
`/var/www/html/web4/html/_img/_2/fa1d0a1d407f077 aa98c8498b3e8be 7d.jpg':
Permission denied.


The /var/ folder belongs to root and has chmod 755
/var/www/ has 777 (root),
/var/www/web4/ has 777 (apache --the httpd runs on user
apache:apache),
/var/www/web4/html/ ... till _img/_2/.... has 777 and is
apache:apache.

>
Sorry if it's too obvious but... what are the permissions of the file
itself?
>

i tried the files with 777 and 755. always same error :-(

--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--

[ph1975@gmail.com]

Re: System() and ImageMagick

I tried everything from the above. i even put "apache" user in root
group ... same error...

Do you have any other tipps ?

[Alvaro G. Vicario]

Re: System() and ImageMagick

*** ph1975@gmail.co m escribió/wrote (9 Sep 2006 12:26:30 -0700):

I tried everything from the above. i even put "apache" user in root
group ... same error...
>
Do you have any other tipps ?

One guess... Do you have a SELinux enhanced Linux distro, such as Fedora
Core? If so, there's a graphical tool somewhere (titled "Security") that
allows you to enable/desable SELinux. Try it out.


--
-+ http://alvaro.es - Álvaro G. Vicario - Burgos, Spain
++ Mi sitio sobre programación web: http://bits.demogracia.com
+- Mi web de humor con rayos UVA: http://www.demogracia.com
--