public override async Task RunAsync(IWwtContext context, CancellationToken token)
{
string query = context.Request.Params["Q"];
string[] values = query.Split(',');
int level = Convert.ToInt32(values[0]);
int tileX = Convert.ToInt32(values[1]);
int tileY = Convert.ToInt32(values[2]);
if (level > 14)
{
await context.Response.WriteAsync("No image", token);
context.Response.Close();
return;
}
if (level < 9)
{
context.Response.ContentType = "image/png";
using (Stream s = await _plateTiles.GetStreamAsync(_options.WwtTilesDir, "SDSS_8.plate", level, tileX, tileY, token))
{
await s.CopyToAsync(context.Response.OutputStream, token);
context.Response.Flush();
context.Response.End();
return;
}
}
using (var stream = await _octTileMap.GetOctTileAsync(level, tileX, tileY, enforceBoundary: true, token: token))
{
if (stream is null)
{
await context.Response.WriteAsync("No image", token);
}
else
{
await stream.CopyToAsync(context.Response.OutputStream, token);
}
}
}
public override async Task RunAsync(IWwtContext context, CancellationToken token)
{
if (context.Request.UserAgent.ToLower().Contains("wget"))
{
await context.Response.WriteAsync("You are not allowed to bulk download imagery thru the tile service. Please contact [email protected] for more information.", token);
context.Response.End();
return;
}
string query = context.Request.Params["Q"];
string[] values = query.Split(',');
//++
// 2014-09-26 security fix.
//
int level = 0;
int tileX = 0;
int tileY = 0;
try
{
level = Convert.ToInt32(values[0]);
tileX = Convert.ToInt32(values[1]);
tileY = Convert.ToInt32(values[2]);
}
catch
{
await context.Response.WriteAsync("Invalid query string.", token);
context.Response.End();
return;
}
if (level > 14)
{
await context.Response.WriteAsync("No image", token);
context.Response.End();
return;
}
if (level < 8)
{
context.Response.ContentType = "image/png";
using (Stream s = await _plateTiles.GetStreamAsync(_options.WwtTilesDir, "sdssdr12_7.plate", level, tileX, tileY, token))
{
if (s.Length == 0)
{
context.Response.Clear();
context.Response.ContentType = "text/plain";
await context.Response.WriteAsync("No image", token);
context.Response.End();
return;
}
await s.CopyToAsync(context.Response.OutputStream, token);
context.Response.Flush();
context.Response.End();
return;
}
}
context.Response.ContentType = "image/png";
using (var stream = await _octTileMap.GetOctTileAsync(level, tileX, tileY, token: token))
{
await stream.CopyToAsync(context.Response.OutputStream, token);
}
}