X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/4e9ed49f8f12eb331b29bd5b6dc3693c520fddc2..1d28cc061677bd07d9bed48dd84bd5c590247043:/src/src/expand.c

diff --git a/src/src/expand.c b/src/src/expand.c
index 89de56255..657cf3cb9 100644
--- a/src/src/expand.c
+++ b/src/src/expand.c
@@ -5,6 +5,7 @@
 /* Copyright (c) The Exim Maintainers 2020 - 2022 */
 /* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 
 /* Functions for handling string expansion. */
@@ -1869,6 +1870,7 @@ if (Ustrncmp(name, "auth", 4) == 0)
   if (!*endptr && n != 0 && n <= AUTH_VARS)
     return auth_vars[n-1] ? auth_vars[n-1] : US"";
   }
+#ifdef WITH_CONTENT_SCAN
 else if (Ustrncmp(name, "regex", 5) == 0)
   {
   uschar *endptr;
@@ -1876,6 +1878,7 @@ else if (Ustrncmp(name, "regex", 5) == 0)
   if (!*endptr && n != 0 && n <= REGEX_VARS)
     return regex_vars[n-1] ? regex_vars[n-1] : US"";
   }
+#endif
 
 /* For all other variables, search the table */
 
@@ -6542,6 +6545,9 @@ while (*s)
         if (item_type == EITEM_FILTER)
           {
           BOOL condresult;
+	  /* the condition could modify $value, as a side-effect */
+	  uschar * save_value = lookup_value;
+
           if (!eval_condition(expr, &resetok, &condresult))
             {
             iterate_item = save_iterate_item;
@@ -6550,6 +6556,7 @@ while (*s)
               expand_string_message, name);
             goto EXPAND_FAILED;
             }
+	  lookup_value = save_value;
           DEBUG(D_expand) debug_printf_indent("%s: condition is %s\n", name,
             condresult? "true":"false");
           if (condresult)
@@ -6558,14 +6565,12 @@ while (*s)
             continue;               /* FALSE => skip this item */
           }
 
-        /* EITEM_MAP and EITEM_REDUCE */
-
-        else
+        else			/* EITEM_MAP and EITEM_REDUCE */
           {
+	  /* the expansion could modify $value, as a side-effect */
 	  uschar * t = expand_string_internal(expr,
 	    ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, NULL, &resetok, NULL);
-          temp = t;
-          if (!temp)
+          if (!(temp = t))
             {
             iterate_item = save_iterate_item;
             expand_string_message = string_sprintf("%s inside \"%s\" item",
@@ -8715,9 +8720,11 @@ assert_variable_notin() treats as const, so deconst is safe. */
 for (int i = 0; i < AUTH_VARS; i++) if (auth_vars[i])
   assert_variable_notin(US"auth<n>", US auth_vars[i], &e);
 
+#ifdef WITH_CONTENT_SCAN
 /* check regex<n> variables. assert_variable_notin() treats as const. */
 for (int i = 0; i < REGEX_VARS; i++) if (regex_vars[i])
   assert_variable_notin(US"regex<n>", US regex_vars[i], &e);
+#endif
 
 /* check known-name variables */
 for (var_entry * v = var_table; v < var_table + var_table_size; v++)