Clamp registered collection time-stamp to SOURCE_DATE_EPOCH if set

Task-number: QTBUG-62697
Pick-to: 6.0 5.15
Change-Id: I73cc41db9c57d050783e963896f9696c294126c3
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

1 files changed, 9 insertions, 1 deletions

diff --git a/src/assistant/help/qhelpcollectionhandler.cpp b/src/assistant/help/qhelpcollectionhandler.cpp
index 57ab8e329..595cc0e29 100644
--- a/src/assistant/help/qhelpcollectionhandler.cpp
+++ b/src/assistant/help/qhelpcollectionhandler.cpp
@@ -2197,7 +2197,15 @@ bool QHelpCollectionHandler::registerIndexTable(const QHelpDBReader::IndexTable
     m_query->addBindValue(fileName);
     const QFileInfo fi(absoluteDocPath(fileName));
     m_query->addBindValue(fi.size());
-    m_query->addBindValue(fi.lastModified().toString(Qt::ISODate));
+    QDateTime lastModified = fi.lastModified();
+    if (qEnvironmentVariableIsSet("SOURCE_DATE_EPOCH")) {
+        const QString sourceDateEpochStr = qEnvironmentVariable("SOURCE_DATE_EPOCH");
+        bool ok;
+        const qlonglong sourceDateEpoch = sourceDateEpochStr.toLongLong(&ok);
+        if (ok && sourceDateEpoch < lastModified.toSecsSinceEpoch())
+            lastModified.setSecsSinceEpoch(sourceDateEpoch);
+    }
+    m_query->addBindValue(lastModified.toString(Qt::ISODate));
     if (!m_query->exec())
         return false;