public void ProcessRequest(HttpContext context)
{
if (!AppLogic.AppConfigBool("Watermark.Enabled"))
{
return;
}
string querystringImageURL = CommonLogic.QueryStringCanBeDangerousContent("imgurl");
if (string.IsNullOrEmpty(querystringImageURL))
{
return;
}
context.Response.CacheControl = "private";
context.Response.Expires = 0;
context.Response.AddHeader("pragma", "no-cache");
string mappedImageUrl = HttpContext.Current.Request.MapPath(querystringImageURL);
bool sourceImageExists = CommonLogic.FileExists(mappedImageUrl) && !mappedImageUrl.Contains("nopicture.gif") && !mappedImageUrl.Contains("nopictureicon.gif");
if (sourceImageExists)
{
string imgSize = CommonLogic.QueryStringCanBeDangerousContent("size");
string copyrightText = AppLogic.AppConfig("Watermark.CopyrightText");
string copyrightImageUrl = string.Empty;
if (string.IsNullOrEmpty(copyrightText))
{
copyrightText = AppLogic.AppConfig("StoreName");
}
switch (imgSize.ToLower())
{
case "icon":
copyrightImageUrl = AppLogic.AppConfig("Watermark.CopyrightImage.Icon");
break;
case "medium":
copyrightImageUrl = AppLogic.AppConfig("Watermark.CopyrightImage.Medium");
break;
case "large":
copyrightImageUrl = AppLogic.AppConfig("Watermark.CopyrightImage.Large");
break;
default:
copyrightImageUrl = AppLogic.AppConfig("Watermark.CopyrightImage.Icon");
break;
}
if (!CommonLogic.IsStringNullOrEmpty(copyrightImageUrl))
{
copyrightImageUrl = CommonLogic.IIF(copyrightImageUrl.StartsWith("/"), copyrightImageUrl.Remove(0, 1), copyrightImageUrl);
}
// TODO: Image must be fully qualified (System.Drawing.Image) to support VB conversion
// During conversion System.Drawing will be lost...must be re-added
System.Drawing.Image imgPhoto = CommonLogic.LoadImage(mappedImageUrl);
if (!string.IsNullOrEmpty(copyrightText) || !string.IsNullOrEmpty(copyrightImageUrl))
{
//If a copyright image is used and exists on disk, clear copyright text
if (!string.IsNullOrEmpty(copyrightImageUrl) && CommonLogic.FileExists(copyrightImageUrl))
{
copyrightText = string.Empty;
}
try
{
imgPhoto = CommonLogic.AddWatermark(imgPhoto, copyrightText, copyrightImageUrl);
}
catch (Exception ex)
{
SysLog.LogException(ex, MessageTypeEnum.GeneralException, MessageSeverityEnum.Error);
}
}
if (mappedImageUrl.EndsWith(".jpeg", StringComparison.InvariantCultureIgnoreCase))
{
context.Response.ContentType = "image/jpeg";
EncoderParameters encoderParameters = new EncoderParameters();
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 100L);
imgPhoto.Save(context.Response.OutputStream, ImageCodecInfo.GetImageEncoders()[1], encoderParameters);
}
if (mappedImageUrl.EndsWith(".jpg", StringComparison.InvariantCultureIgnoreCase))
{
context.Response.ContentType = "image/jpg";
EncoderParameters encoderParameters = new EncoderParameters();
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 100L);
imgPhoto.Save(context.Response.OutputStream, ImageCodecInfo.GetImageEncoders()[1], encoderParameters);
}
if (mappedImageUrl.EndsWith(".gif", StringComparison.InvariantCultureIgnoreCase))
{
context.Response.ContentType = "image/gif";
imgPhoto.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
}
if (mappedImageUrl.EndsWith(".png", StringComparison.InvariantCultureIgnoreCase))
{
context.Response.ContentType = "image/png";
imgPhoto.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);
}
imgPhoto.Dispose();
}
}