Exemplo n.º 1
0
        /// <summary>
        /// Queries the security package's expections regarding message/token/signature/padding buffer sizes.
        /// </summary>
        /// <returns></returns>
        private SecPkgContext_Sizes QueryBufferSizes()
        {
            SecPkgContext_Sizes sizes  = new SecPkgContext_Sizes();
            SecurityStatus      status = SecurityStatus.InternalError;
            bool gotRef = false;

            RuntimeHelpers.PrepareConstrainedRegions();
            try
            {
                this.ContextHandle.DangerousAddRef(ref gotRef);
            }
            catch (Exception)
            {
                if (gotRef)
                {
                    this.ContextHandle.DangerousRelease();
                    gotRef = false;
                }

                throw;
            }
            finally
            {
                if (gotRef)
                {
                    status = ContextNativeMethods.QueryContextAttributes_Sizes(
                        ref this.ContextHandle.rawHandle,
                        ContextQueryAttrib.Sizes,
                        ref sizes
                        );
                    this.ContextHandle.DangerousRelease();
                }
            }

            if (status != SecurityStatus.OK)
            {
                throw new SspiException("Failed to query context buffer size attributes", status);
            }

            return(sizes);
        }
 internal static extern SecurityStatus QueryContextAttributes_Sizes(
     ref RawSspiHandle contextHandle,
     ContextQueryAttrib attrib,
     ref SecPkgContext_Sizes sizes
     );
Exemplo n.º 3
0
        /// <summary>
        /// Queries the security package's expections regarding message/token/signature/padding buffer sizes.
        /// </summary>
        /// <returns></returns>
        private SecPkgContext_Sizes QueryBufferSizes()
        {
            SecPkgContext_Sizes sizes = new SecPkgContext_Sizes();
            SecurityStatus status = SecurityStatus.InternalError;
            bool gotRef = false;

            RuntimeHelpers.PrepareConstrainedRegions();
            try
            {
                this.ContextHandle.DangerousAddRef( ref gotRef );
            }
            catch ( Exception )
            {
                if ( gotRef )
                {
                    this.ContextHandle.DangerousRelease();
                    gotRef = false;
                }

                throw;
            }
            finally
            {
                if ( gotRef )
                {
                    status = ContextNativeMethods.QueryContextAttributes_Sizes(
                        ref this.ContextHandle.rawHandle,
                        ContextQueryAttrib.Sizes,
                        ref sizes
                    );
                    this.ContextHandle.DangerousRelease();
                }
            }

            if( status != SecurityStatus.OK )
            {
                throw new SspiException( "Failed to query context buffer size attributes", status );
            }

            return sizes;
        }
 internal static extern SecurityStatus QueryContextAttributes_Sizes(
     ref RawSspiHandle contextHandle,
     ContextQueryAttrib attrib,
     ref SecPkgContext_Sizes sizes
 );