From 413282c0cfb0bafc6ab325c6d4798e4765e021fa Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Mon, 17 Mar 2014 11:05:34 -0400
Subject: file: Avoid runaway DOWNLOAD/UPLOAD progress reports (#14807)

Curl makes progress callbacks frequently but we round to the nearest
percent and report only when that changes so that we make at most 101
progress reports.  However, when unexpected data beyond the total are
transferred the progress can get beyond 100% and lead to unlimited
reports.  Avoid this case by capping the reported progress to 100%.
---
 Source/cmFileCommand.cxx | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index 9fabdc7..5bfb664 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -2539,6 +2539,11 @@ namespace {
       if (total > 0.0)
         {
         this->CurrentPercentage = static_cast<int>(value/total*100.0 + 0.5);
+        if(this->CurrentPercentage > 100)
+          {
+          // Avoid extra progress reports for unexpected data beyond total.
+          this->CurrentPercentage = 100;
+          }
         }
 
       bool updated = (OldPercentage != this->CurrentPercentage);
-- 
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