source: TI05-delivery/ows_framework/trunk/ows_server/ows_server/controllers/fetch.py @ 3536

from ows_server.lib.base import *
import os

import pylons
class FetchController(BaseController):
    def _getMimeType(self, file):
        if os.path.splitext(file)[1]=='.nc':
            return 'application/cf-netcdf'
        else:
            return 'application/unknown'
        
        
    def fetchFile(self, file):
        ''' returns a file from the filestore. Used for the wcs store parameter, but could be used for other services.
        checks the security information in the text file that accompanies the file and checks ndg security'''
        
        #given the filename, these are the paths to the file, and to the accompanying text file
        filePath=request.environ['paste.config']['app_conf']['publish_dir'] + '/' + file
        textFilePath=request.environ['paste.config']['app_conf']['publish_dir']+'/'+os.path.splitext(os.path.basename(file))[0]+'.txt'
    
        #open the text file and read security credentials
        input =open(textFilePath, 'r')
        sec=input.read()
                
        #check current users credentials
        #if they match, return the file
        #TODO, check this properly
        if sec=='No Security':
            match=True #allow       
        elif 'ndgSec' in session:
            #if username matches
            if sec == str(session['ndgSec']['u']):
                match=True #allow         
            else:
                match=False #deny
        else:
             match=False  #deny      
        if match:
            #return the file (netcdf)
            fileToReturn=open(filePath, 'r')
            mType=self._getMimeType(file)
                      
            response.headers['Content-Type']=mType
            return response.write(fileToReturn)
        else:
            #return access denied message
            c.xml='<div class="error">%s</div>'%'<p> Access Denied </p><p>Not Logged in</p>'
            return render('error')