[mapserver-users] run-time substitution

[Eva Jelínková]

Dear mapserv people,

does anybody has an experience with runtime substitution in MAP->WEB:
METADATA section of mapfile (MapServer 7)?
http://mapserver.org/cgi/runsub.html#parameters-supported

I am trying to substitute part of 'wms_onlineresource' value, using default
value in VALIDATION. GetCapabilities request gives me string with
%name_of_parameter% in the URL.

Other substitutions (in LAYER: CONNECTION) work well.


My *mapfile* looks like this:

MAP
 NAME test
 SHAPEPATH '/path/to/data/'
 STATUS ON
 SIZE 600 600
 EXTENT -12370335 5011146 -11573462 5632806
 UNITS METERS
 IMAGECOLOR 255 255 255

 OUTPUTFORMAT
   NAME 'png'
   DRIVER AGG/PNG
   MIMETYPE 'image/png'
   IMAGEMODE RGB
   EXTENSION 'png'
 END

 IMAGETYPE png

 PROJECTION
  'init=epsg:3857'
 END

 WEB
  VALIDATION
    'ma_name' '[a-z\-]+'
    'db_name' '[a-z\_]+'
    'db_schema' '[a-z\_]+'
    'db_user' '[a-zA-Z\-]+'
    'db_pw' '[a-zA-Z\-]+'
    'default_db_user' 'user'
    'default_db_pw' 'pw'
    'default_ma_name' 'test-ma'
    'default_db_name' 'test_ma'
    'default_db_schema' 'test'
  END
  METADATA
   'wms_title'          'MapServer WMS'
   'wms_abstract'       'test'
   'wms_srs'            'EPSG:3857 EPSG:900913 EPSG:4326'
   'wms_encoding'       'UTF-8'
   'wms_onlineresource' 'http://url/cgi-bin/gp_%ma_name%_com_wms?'
   'wms_enable_request' '*'
  END
 END

 LAYER
  NAME 'polygons'
  CONNECTIONTYPE postgis
  CONNECTION 'user=%db_user% password=%db_pw% dbname=%db_name%
host=db.server.url'
  DATA 'geom FROM %db_schema%.polygons'
  STATUS ON
  TYPE POLYGON
  METADATA
    'wms_title' 'polygons'
  END
  PROJECTION
    'init=epsg:3857'
  END
  PROCESSING 'LABEL_NO_CLIP=ON'
  LABELITEM 'id'
  CLASS
    LABEL
      TYPE truetype
      FONT ubuntu
      ANTIALIAS false
      SIZE 10
      COLOR 10 10 10
      OFFSET 2 -3
      BUFFER 5
    END
  END
 END

END



*GetCapabilities* request gives me:

<?xml version='1.0' encoding="UTF-8" standalone="no" ?>
<!DOCTYPE WMT_MS_Capabilities SYSTEM "
http://schemas.opengis.net/wms/1.1.1/WMS_MS_Capabilities.dtd"
 [
 <!ELEMENT VendorSpecificCapabilities EMPTY>
 ]>  <!-- end of DOCTYPE declaration -->

<WMT_MS_Capabilities version="1.1.1">

<!-- MapServer version 7.0.1 OUTPUT=PNG OUTPUT=JPEG OUTPUT=KML
SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=CAIRO
SUPPORTS=SVG_SYMBOLS SUPPORTS=RSVG SUPPORTS=ICONV SUPPORTS=FRIBIDI
SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER
SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=POSTGIS
INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE -->

<Service>
  <Name>OGC:WMS</Name>
  <Title>MapServer WMS</Title>
  <Abstract>test</Abstract>
  <OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="
http://url/cgi-bin/gp_%ma_name%_com_wms?"/>
  <ContactInformation>
  </ContactInformation>
</Service>

<Capability>
  <Request>
    <GetCapabilities>
      <Format>application/vnd.ogc.wms_xml</Format>
      <DCPType>
        <HTTP>
          <Get><OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://url/cgi-bin/gp_%ma_name%_com_wms?"/></Get>
          <Post><OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="http://url/cgi-bin/gp_%ma_name%_com_wms?"/></Post>
        </HTTP>
      </DCPType>
    </GetCapabilities>
...



If I add my *parameter to URL request*:
http://url/cgi-bin/mapserv7.fcgi?MAP=/path/to/mapfile.map&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetCapabilities&ma_name=testing

I get:
"msWMSDispatch(): WMS server error. Incomplete or unsupported WMS request"



If anyone has ever tried to use this substitution, please, let me know.

Thanks,
Eva
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