5 files changed, 23 insertions, 7 deletions
diff --git a/src/common/notify.cpp b/src/common/notify.cpp
index 0ac3d501b..c3165fb05 100644
--- a/src/common/notify.cpp
+++ b/src/common/notify.cpp
@@ -27,6 +27,7 @@
 // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <boost/algorithm/string.hpp>
+#include <stdarg.h>
 #include "misc_log_ex.h"
 #include "file_io_utils.h"
 #include "spawn.h"
@@ -55,11 +56,26 @@ Notify::Notify(const char *spec)
   CHECK_AND_ASSERT_THROW_MES(epee::file_io_utils::is_file_exist(filename), "File not found: " << filename);
 }
 
-int Notify::notify(const char *parameter)
+static void replace(std::vector<std::string> &v, const char *tag, const char *s)
+{
+  for (std::string &str: v)
+    boost::replace_all(str, tag, s);
+}
+
+int Notify::notify(const char *tag, const char *s, ...)
 {
   std::vector<std::string> margs = args;
-  for (std::string &s: margs)
-    boost::replace_all(s, "%s", parameter);
+
+  replace(margs, tag, s);
+
+  va_list ap;
+  va_start(ap, s);
+  while ((tag = va_arg(ap, const char*)))
+  {
+    s = va_arg(ap, const char*);
+    replace(margs, tag, s);
+  }
+  va_end(ap);
 
   return tools::spawn(filename.c_str(), margs, false);
 }
diff --git a/src/common/notify.h b/src/common/notify.h
index 81aacebb0..f813e8def 100644
--- a/src/common/notify.h
+++ b/src/common/notify.h
@@ -39,7 +39,7 @@ class Notify
 public:
   Notify(const char *spec);
 
-  int notify(const char *parameter);
+  int notify(const char *tag, const char *s, ...);
 
 private:
   std::string filename;
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 9f1e2a0c0..7620dfd61 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -3701,7 +3701,7 @@ leave:
 
   std::shared_ptr<tools::Notify> block_notify = m_block_notify;
   if (block_notify)
-    block_notify->notify(epee::string_tools::pod_to_hex(id).c_str());
+    block_notify->notify("%s", epee::string_tools::pod_to_hex(id).c_str(), NULL);
 
   return true;
 }
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index a8fe9c7cb..eaffe6472 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -2041,7 +2041,7 @@ void wallet2::process_new_transaction(const crypto::hash &txid, const cryptonote
   {
     std::shared_ptr<tools::Notify> tx_notify = m_tx_notify;
     if (tx_notify)
-      tx_notify->notify(epee::string_tools::pod_to_hex(txid).c_str());
+      tx_notify->notify("%s", epee::string_tools::pod_to_hex(txid).c_str(), NULL);
   }
 }
 //----------------------------------------------------------------------------------------------------
diff --git a/tests/unit_tests/notify.cpp b/tests/unit_tests/notify.cpp
index cd70b7739..ceeba8649 100644
--- a/tests/unit_tests/notify.cpp
+++ b/tests/unit_tests/notify.cpp
@@ -67,7 +67,7 @@ TEST(notify, works)
       + " " + name_template + " %s";
 
   tools::Notify notify(spec.c_str());
-  notify.notify("1111111111111111111111111111111111111111111111111111111111111111");
+  notify.notify("%s", "1111111111111111111111111111111111111111111111111111111111111111", NULL);
 
   bool ok = false;
   for (int i = 0; i < 10; ++i)