示例#1
0
def download_page(request):
    "Displays a page with a link to download a file, or redirects to the download itself."
    # The friendly download link isn't necessarily part of a story, but is good functionality atleast for our use
    
    if 'fileid' not in request.GET:
        return render_error(request, "You did not specify which file to download.", 'filelist.html')
        # displays filelist upon error
    file_id = request.GET['fileid']
    
    try:
        file_entry = MediaFile.objects.get(file_id=file_id)
    except MediaFile.DoesNotExist:
        # Essentially a 404, what else could we do with the return?
        return render_error(request, "Not Found: The file you are trying to download does not exist.", status=404)

    if file_entry.user_id != user.get_user_id():
        # Essentially a 403
        return render_error(request, "Forbidden: You are trying to access a file that you didn't upload.", status=403)
    
    key = 'u/'+file_id

    # Increment view count
    MediaFile.objects.filter(file_id=file_id).update(view_count=F("view_count")+1)
    
    # Sign a URL for the user
    url = s3util.sign_url('s3.mediasnak.com', key, expiry=60, format=s3util.URL_CUSTOM)
    
    # Redirect user to the calculated S3 download link
    return redirect(url)
示例#2
0
def get_thumbnail(request):
    # most of this is copied from the download page above

    if 'fileid' not in request.GET:
        return render_error(request, "You did not specify a file.", 'filelist.html')
        # displays filelist upon error
    file_id = request.GET['fileid']
    
    try:
        file_entry = MediaFile.objects.get(file_id=file_id)
    except MediaFile.DoesNotExist:
        # Essentially a 404, what else could we do with the return?
        return render_error(request, "Not Found: The thumbnail you are trying to access does not exist.", status=404)

    if file_entry.user_id != user.get_user_id():
        # Essentially a 403
        return render_error(request, "Forbidden: You are trying to access a thumbnail for file that you didn't upload.", status=403)
    
    if not file_entry.has_thumb:
        #TODO: Return correct type of thumbnail based on content-type or category
        if file_entry.category in ('image', 'video', 'audio'):
            return redirect('/static/%s_thumb.png' % (file_entry.category,))
        return redirect('/static/generic_thumb.png')
    key = 't/'+file_id

    # Sign a URL for the user
    url = s3util.sign_url('s3.mediasnak.com', key, expiry=60, format=s3util.URL_CUSTOM)
    
    # Redirect user to the calculated S3 download link
    return redirect(url)