1 files changed, 22 insertions, 0 deletions
diff --git a/apt-private/private-utils.cc b/apt-private/private-utils.cc
index 775bf7e79..5863925b9 100644
--- a/apt-private/private-utils.cc
+++ b/apt-private/private-utils.cc
@@ -1,11 +1,13 @@
 #include <config.h>
 
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
 #include <apt-pkg/fileutl.h>
 
 #include <apt-private/private-utils.h>
 
 #include <cstdlib>
+#include <sstream>
 #include <unistd.h>
 
 // DisplayFileInPager - Display File with pager				/*{{{*/
@@ -74,3 +76,23 @@ bool EditFileInSensibleEditor(std::string const &filename)
    return ExecWait(Process, "editor", false);
 }
 									/*}}}*/
+time_t GetSecondsSinceEpoch()						/*{{{*/
+{
+   auto const source_date_epoch = getenv("SOURCE_DATE_EPOCH");
+   if (source_date_epoch == nullptr)
+      return time(nullptr);
+
+   time_t epoch;
+   std::stringstream ss(source_date_epoch);
+   ss >> epoch;
+
+   if (ss.fail() || !ss.eof())
+   {
+      _error->Warning("Environment variable SOURCE_DATE_EPOCH was ignored as it has an invalid value: \"%s\"",
+            source_date_epoch);
+      return time(nullptr);
+   }
+
+   return epoch;
+}
+									/*}}}*/