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mantis 7885: robust asset services have no cache and only accept a asset ID that is a uuid, so regions hack to cache several image formats is not possible. Robut GetTexture is very heavy unless image format is the default (j2k mime type x-j2k), since with no cache image convertions is performed on every request. Adicionally it does expose all textures if the tcp port is public. Avoid using it.

0.9.0.1-postfixes
UbitUmarov 2018-03-10 20:50:24 +00:00
parent 8c390ef3fe
commit a0d0d65c70
1 changed files with 31 additions and 68 deletions
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53
OpenSim/Capabilities/Handlers/GetTexture/GetTextureRobustHandler.cs
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@ -131,57 +131,28 @@ namespace OpenSim.Capabilities.Handlers
/// <returns>False for "caller try another codec"; true otherwise</returns>
private bool FetchTexture(IOSHttpRequest httpRequest, IOSHttpResponse httpResponse, UUID textureID, string format)
{
// m_log.DebugFormat("[GETTEXTURE]: {0} with requested format {1}", textureID, format);
// m_log.DebugFormat("[GETTEXTURE]: {0} with requested format {1}", textureID, format);
AssetBase texture;
string fullID = textureID.ToString();
if (format != DefaultFormat)
fullID = fullID + "-" + format;
if (!String.IsNullOrEmpty(m_RedirectURL))
if(!String.IsNullOrEmpty(m_RedirectURL))
{
// Only try to fetch locally cached textures. Misses are redirected
texture = m_assetService.GetCached(fullID);
if (texture != null)
{
if (texture.Type != (sbyte)AssetType.Texture)
{
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
return true;
}
WriteTextureData(httpRequest, httpResponse, texture, format);
return true;
}
else
{
string textureUrl = m_RedirectURL + "?texture_id="+ textureID.ToString();
string textureUrl = m_RedirectURL + "?texture_id=" + textureID.ToString();
m_log.Debug("[GETTEXTURE]: Redirecting texture request to " + textureUrl);
httpResponse.StatusCode = (int)OSHttpStatusCode.RedirectMovedPermanently;
httpResponse.RedirectLocation = textureUrl;
return true;
}
}
else // no redirect
{
// try the cache
texture = m_assetService.GetCached(fullID);
if (texture == null)
{
// m_log.DebugFormat("[GETTEXTURE]: texture was not in the cache");
// Fetch locally or remotely. Misses return a 404
texture = m_assetService.Get(textureID.ToString());
if (texture != null)
if(texture != null)
{
if (texture.Type != (sbyte)AssetType.Texture)
if(texture.Type != (sbyte)AssetType.Texture)
{
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
return true;
}
if (format == DefaultFormat)
if(format == DefaultFormat)
{
WriteTextureData(httpRequest, httpResponse, texture, format);
return true;
@ -190,28 +161,20 @@ namespace OpenSim.Capabilities.Handlers
{
AssetBase newTexture = new AssetBase(texture.ID + "-" + format, texture.Name, (sbyte)AssetType.Texture, texture.Metadata.CreatorID);
newTexture.Data = ConvertTextureData(texture, format);
if (newTexture.Data.Length == 0)
if(newTexture.Data.Length == 0)
return false; // !!! Caller try another codec, please!
newTexture.Flags = AssetFlags.Collectable;
newTexture.Temporary = true;
newTexture.Local = true;
m_assetService.Store(newTexture);
WriteTextureData(httpRequest, httpResponse, newTexture, format);
return true;
}
}
}
else // it was on the cache
{
// m_log.DebugFormat("[GETTEXTURE]: texture was in the cache");
WriteTextureData(httpRequest, httpResponse, texture, format);
return true;
}
}
// not found
// m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found");
// m_log.Warn("[GETTEXTURE]: Texture " + textureID + " not found");
httpResponse.StatusCode = (int)System.Net.HttpStatusCode.NotFound;
return true;
}