From 8a56c8707c17ad46867fa63bb9f89a9a43bd3dd9 Mon Sep 17 00:00:00 2001
From: "Jean-Marc Pigeon (Delson)" <jmp@safe.ca>
Date: Tue, 13 Aug 2024 05:12:22 -0400
Subject: [PATCH] Detecting '\000' within incoming SMTP protocol

---
 lib/devsoc.c | 12 +++++++++++-
 lib/subrou.c |  2 +-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/devsoc.c b/lib/devsoc.c
index 7d895d2..eb3bda8 100644
--- a/lib/devsoc.c
+++ b/lib/devsoc.c
@@ -814,8 +814,10 @@ if (soc!=(SOCTYP *)0) {
   int limit;
   char *buffer;
 
-  limit=(soc->maxcarin-soc->carin)-1;
   buffer=soc->carpile+soc->carin;
+  limit=(soc->maxcarin-soc->carin);
+  (void) memset(buffer,'\000',limit);
+  limit--;
   switch (soc->modtls) {
     case true   :
       got=tls_read(soc->tls,buffer,limit);
@@ -842,6 +844,14 @@ if (soc!=(SOCTYP *)0) {
       break;
     }
   if (got>0) {                 //we have recived some character
+    char *ptr;
+ 
+    //removing NULL char if received 
+    ptr=buffer;
+    for (int i=0;i<got;i++,ptr++) {
+      if (*ptr=='\000')
+        *ptr='?';
+      }
     soc->carin+=got;           //managing carpile
     soc->carpile[soc->carin]='\000';
     }
diff --git a/lib/subrou.c b/lib/subrou.c
index f995dd4..044bd1a 100644
--- a/lib/subrou.c
+++ b/lib/subrou.c
@@ -21,7 +21,7 @@
 
 //version definition 
 #define VERSION "0.4.1"
-#define RELEASE "2"
+#define RELEASE "3"
 
 //Public variables
 PUBLIC  int debug=0;            //debug level
-- 
2.47.3