mapscript map loading error

[cris ricana]

Yes, you're right. I also need to give the tmp-dir absolute path in
the IMAGEURL tab. There is indeed a simple solution in specifying a
different tmp-dir than under the DocumentRoot folder (in my case,
under /usr/local/apache2/htdocs/), that is, to make a symbolic link to
that folder and then making sure that the php.ini and httpd.conf files
follow this symlink. Anyway, thanks for all the help Manfred! :)

Maricris


On 7/25/06, Manfred Meier <m.meier at spiekermann.de> wrote:
> .....
>  > I still don't know why
>  > both mapserv and mapscript is ok with me using
>  > /usr/local/apache2/htdocs/tmp, but not on the others.
>
> Hello,
>
> perhaps there is a simple solution. If I understand right the mapserver
> doku, then IMAGEURL is relative to the apache document root. So "/tmp/"
> is by the apache interpreted as the absolute path
> "/usr/local/apache2/htdocs/tmp/" (I assume that
> /usr/local/apache2/htdocs is the documentroot in your httpd.conf).
>
> So this combination of IMAGEURL and IMAGEPATH works perfectly because
> that is a directory tree owned by the user, the apache is running on.
>
> Manfred
>
>
>
>
> cris ricana schrieb:
> > Hi Manfred!
> >
> > Sorry, I haven't replied sooner. I have been away from the office for
> > a few days and had just got back to fix this problem.
> >
> > I did what your new suggestions, with no success. But I returned to
> > the tmp folder and your suggestion if it is indeed readable and
> > writeable by apache and mapserver. I experimented on three locations
> > for my tmp-folder: in /var/www/tmp; in /usr/local/tmp; and
> > /usr/local/apache2/htdocs/tmp, making all three locations readable and
> > writeable. Then I used these three locations successively in the
> > IMAGEPATH line of the map file. I also made two versions of a html
> > file, one has CGI forms using mapserv and the other one has PHP
> > mapscripts extensions and tags.
> >
> > Using the CGI html file, mapserv had successfully written images to
> > all three locations, but could only read/show the images from the
> > /usr/local/apache2/htdocs/tmp folder. Mapscript can read/write on
> > /usr/local/apache2/htdocs/tmp, but not on the other two.
> >
> > Therefore, it seems that the matter is all about permissions of the
> > tmp-dir and the created images as well. To make these folders
> > readable/writable, I used "chmod 777", a command I'm not comfortable
> > using. Could there be safer way of doing these? I still don't know why
> > both mapserv and mapscript is ok with me using
> > /usr/local/apache2/htdocs/tmp, but not on the others. I had to admit
> > I'm not really a linx expert, so I probably am embarrassing myself
> > with these questions, so well... <smiles sheepishly>
> >
> > Maricris
> >
> >
> >
> > On 7/20/06, Manfred Meier <m.meier at spiekermann.de> wrote:
> >
> >> Hello,
> >>
> >> some additional "ideas": (You know, I'm not a php man)
> >>
> >> - is in your php.ini display_errors set to "on", so that erors are
> >> shown? And are the errors and warnings activated?
> >>
> >> - you have this echo's in yout script as debug output. Can you insert an
> >> echo after each of these 3 lines too,
> >>  >        $map = ms_newMapObj($map_path);
> >>  >        $image=$map->draw();
> >>  >        $image_url=$image->saveWebImage();
> >> so that you ca see what the last executed statement is?
> >>
> >> Manfred
> >>
> >>
> >> cris ricana schrieb:
> >>
> >> > Hi!
> >> >
> >> > Here's the answer to your questions:
> >> >
> >> >> - is your tmp-dir writeable for the webserver?
> >> >
> >> >
> >> > Yes it is. I've tested my mapserver installation successfully using
> >> > CGI forms (the itasca samples, in particular) instead of PHP
> >> > /mapscript. These CGI webpages performs well and writes their images
> >> > in a temp folder I made (/usr/local/apache2/htdocs/tmp/).
> >> >
> >> >
> >> >> - if you look at the source-code for the html-page in your browser,
> >> does
> >> >> it show the correct url in the image tag?
> >> >
> >> >
> >> > The output in the browser (as well as the source code) is simply these
> >> > text:
> >> >
> >> > "php_mapscript.so loaded. /usr/local/apache2/htdocs/recipe1/hello.map"
> >> >
> >> > Which are text echoed from the php code (see my php code below) from
> >> > line 3 and 5. There are no lines for the image at all. Actually, I
> >> > added these text to locate where the problem is in my php code.
> >> > Otherwise, the output in the browser would be a blank page.
> >> >
> >> >
> >> > Regards,
> >> > Maricris
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > On 7/20/06, Manfred Meier <m.meier at spiekermann.de> wrote:
> >> >
> >> >> Hello,
> >> >>
> >> >> - is your tmp-dir writeable for the webserver?
> >> >> - if you look at the source-code for the html-page in your browser,
> >> does
> >> >> it show the correct url in the image tag?
> >> >>
> >> >> Manfred
> >> >>
> >> >>
> >> >> cris ricana schrieb:
> >> >>
> >> >> > Hello!
> >> >> >
> >> >> > I'd like some help in using PHP/Mapscript. I have a freshly
> >> installed
> >> >> > Mapserver machine and is testing some simple php webpages to see if
> >> >> > everything is working, especially PHP/Mapscript:
> >> >> >
> >> >> >    <?php
> >> >> >          dl ("php_mapscript.so");
> >> >> >          echo("php_mapscript.so loaded.\n");   //to see if the
> >> >> library will
> >> >> > sucessfully load.
> >> >> >          $map_path="/usr/local/apache2/htdocs/recipe1/hello.map";
> >> >> >          echo($map_path);                             // absolute
> >> path
> >> >> > to the map file
> >> >> >        $map = ms_newMapObj($map_path);
> >> >> >        $image=$map->draw();
> >> >> >        $image_url=$image->saveWebImage();
> >> >> > ?>
> >> >> > <HTML>
> >> >> > <HEAD>
> >> >> > <TITLE>Mapserver "hello world"</TITLE>
> >> >> > </HEAD>
> >> >> > <BODY>
> >> >> > <img SRC="<?php echo $image_url; ?>">
> >> >> > <p>This is the simplest example I could come up with.</p>
> >> >> > ...
> >> >> > </BODY>
> >> >> > </html>
> >> >> >
> >> >> > I'm using the following map file. It should produce an image with
> >> just
> >> >> > a line of text in it:
> >> >> >
> >> >> > MAP
> >> >> >        NAME HELLO
> >> >> >        STATUS ON
> >> >> >        EXTENT 0 0 4000 3000
> >> >> >        SIZE 400 300
> >> >> >        IMAGECOLOR 200 255 255
> >> >> >        WEB
> >> >> >                IMAGEPATH "/usr/local/apache2/htdocs/tmp/"
> >> >> >                IMAGEURL "/tmp/"
> >> >> >        END
> >> >> >
> >> >> >        LAYER
> >> >> >                NAME "credits"
> >> >> >                STATUS DEFAULT
> >> >> >                TRANSFORM FALSE
> >> >> >                TYPE ANNOTATION
> >> >> >                FEATURE
> >> >> >                        POINTS
> >> >> >                                200 150
> >> >> >                        END
> >> >> >                        TEXT 'Hello world.  Mapserver rocks.'
> >> >> >                END
> >> >> >                CLASS
> >> >> >                        LABEL
> >> >> >                                TYPE BITMAP
> >> >> >                                COLOR 0 0 0
> >> >> >                        END
> >> >> >                END
> >> >> >        END
> >> >> >
> >> >> > END
> >> >> >
> >> >> > The output I'm getting from the browsers is just the following:
> >> >> >
> >> >> >                 php_mapscript.so loaded.
> >> >> > /usr/local/apache2/htdocs/recipe1/hello.map
> >> >> >
> >> >> > So it seems that everything is working, but only until it encounters
> >> >> > the "$map = ms_newMapObj($map_path);" line. I've checked the tmp
> >> >> > folder I've made to store the images and no images are made (no
> >> >> > surprise there). Would somebody know what the problem might be and
> >> >> > what could be the solution for this? I really, really need to know.
> >> >> >
> >> >> > Thanks,
> >> >> > Maricris
> >> >> >
> >> >>
> >> >>
> >> >
> >>
> >>
> >
>
>