Adrain,
There's some examples of doing similar things at
http://mapserver.org/ogc/wms_server.html, specifically the Section named "More About
the Online Resource URL"
Best Regards,
Brent Fraser
Adrian Popa wrote:
Hi everyone! I managed to create such a proxy/wrapper - after I
generated the mapfile, I just modified some environment variables and
called mapserv as a regular script. Thankfully the evrironment in which
my wrapper was called is preserved and sent to mapserv.
Here's an example:
#create the mapfile as desired and save the contents to a file who's
complete path is stored in $file
#change the query string and add the map parameter:
$ENV{'QUERY_STRING'} = $ENV{'QUERY_STRING'}."&map=$file";
#call the original mapserv script and return the output to the user
print `/var/www/cgi-bin/mapserv`;
#all done
The only major problem I encountered was that mapserver couldn't open
the files referenced in the mapfile (fonts, template, shapefiles). I had
to specify the full paths in the map file to get it working.
Cheers,
Adrian
Adrian Popa wrote:
Hello everyone!
For special reasons (dynamic data) I need to create some sort of
proxy/wrapper around mapserv (5.2) to permit the dynamic modification
of the mapfile based on the age of the specific mapfile.
Basically the user will request a mapfile which on most ocasions will
be generated on the fly (server-side). I would like to feed this
mapfile to mapserv and return the image to the user in a way it's
compatible with open layers. The user would see this wapper in a
transparent way.
I know how to configure the openlayers part and I know how to generate
the map file, but I'm not sure how to link my wrapper to mapserver...
How do I call mapserver the same way the web server would call it? I
think if I call it through a shell, it wouldn't work the same way. I
don't really want to call shp2img because it's harder to maintain.
The output part should be straightforward - I would just print out
what mapserver returns - because it should take care of setting
content-type and sending the image.
Any tips on where I could start?
Thanks!
P.S. I'm writing the wapper in perl and I'm not using the mapserver
API (but I could if it's necessary)
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