That is what I suspect as well. How do I find out which cache path is being used? Thanks. On 17Jun16, luigi scarso wrote:

On Fri, Jun 17, 2016 at 2:16 PM, Pavneet Arora wrote: ...

...

...

When I trap the output, I get the following error in the log file:

resolvers | caches | fatal error: there is no valid writable cache path defined

I also attempted this manually at a bash prompt resulting in the same error:

sudo -u www-data bash -c bin/proccontext.sh $FILENAME

What would be the correct design pattern to invoke ConTeXt from a web application? This is all under Ubuntu 14.04, BTW.

advTHANKSance

permissions ?

-- luigi

-- Pavneet Arora m: +1 (647) 406-6843 Waroc Informatik t: +1 (416) 937-9276

That is what I suspect as well. How do I find out which cache path is being used?

I'm using Debian+ConTeXt+Apache+PHP. I've struggled a bit to make it work, but now it works. It works even inside a docker container. In my PHP code I've put this: putenv("TEXMFCACHE=/var/cache/context/texmf-cache"); This forces ConTeXt to use that directory as cache. Then I made /var/cache/context/texmf-cache world-writable: chmod ugo+rwx /var/cache/context/texmf-cache Perhaps it's not the best choice for security. Try that and tell me if it works. Best regards, Massi

On Fri, Jun 17, 2016 at 2:42 PM, Pavneet Arora wrote:

Unfortunately, while the mtxrun command works for a shell user:

$ mtxrun -script base --variables | grep cache resolvers | lists | env: $SELFAUTOPARENT/texmf-cache resolvers | lists | var: $SELFAUTOPARENT/texmf-cache resolvers | lists | exp: /opt/context/tex/texmf-cache resolvers | lists | res: /opt/context/tex/texmf-cache

the result is the same for www-data:

$ sudo -u www-data bash -c ". /opt/context/tex/setuptex /opt/context/tex; mtxrun --script base --variables | grep cache" resolvers | caches | fatal error: there is no valid writable cache path defined

I have to think that setuptex isn't able to set up the runtime environment for www-data, somehow?

Is texmf-cache writable by www-data ? When logged as www-data, the cache writable should be the /home/www-data/luatex-cache/<..> folder, while the standard one is used as readonly folder Just make a test: in www-data home # . /opt/context/tex/setuptex /opt/context/tex then make a simple "Hello world" test.tex and read the log. -- luigi

On 6/17/2016 3:39 PM, Pavneet Arora wrote:

That is really the crux of the issue, since www-data does *not* have a login shell. It is used only by apache.

Can setuptex be made to point to the home directory explicitly where the website is housed, e.g., '/home/wwwuser' with user 'wwwuser'?

On 17Jun16, luigi scarso wrote:

...

Is texmf-cache writable by www-data ? When logged as www-data, the cache writable should be the /home/www-data/luatex-cache/<..> folder, while the standard one is used as readonly folder

Just make a test: in www-data home # . /opt/context/tex/setuptex /opt/context/tex then make a simple "Hello world" test.tex and read the log.

you can try /pathtomtxrun/mtxrun --tree=/home/tex context .... Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------