X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/32da6327e434e986a18b75a84f2d8c687ba14619..fc37f2acaaa440c5265dc01fd693d8f5406f5cf9:/src/src/expand.c

diff --git a/src/src/expand.c b/src/src/expand.c
index 831ca2b75..6def3c102 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. */
@@ -12,6 +13,10 @@
 
 #include "exim.h"
 
+#ifdef MACRO_PREDEF
+# include "macro_predef.h"
+#endif
+
 typedef unsigned esi_flags;
 #define ESI_NOFLAGS		0
 #define ESI_BRACE_ENDS		BIT(0)	/* expansion should stop at } */
@@ -830,6 +835,76 @@ static var_entry var_table[] = {
 };
 
 static int var_table_size = nelem(var_table);
+
+#ifdef MACRO_PREDEF
+
+/* dummies */
+uschar * fn_arc_domains(void) {return NULL;}
+uschar * fn_hdrs_added(void) {return NULL;}
+uschar * fn_queue_size(void) {return NULL;}
+uschar * fn_recipients(void) {return NULL;}
+uschar * sender_helo_verified_boolstr(void) {return NULL;}
+uschar * smtp_cmd_hist(void) {return NULL;}
+
+
+
+static void
+expansion_items(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(item_table); i++)
+  {
+  spf(buf, sizeof(buf), CUS"_EXP_ITEM_%T", item_table[i]);
+  builtin_macro_create(buf);
+  }
+}
+static void
+expansion_operators(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(op_table_underscore); i++)
+  {
+  spf(buf, sizeof(buf), CUS"_EXP_OP_%T", op_table_underscore[i]);
+  builtin_macro_create(buf);
+  }
+for (int i = 0; i < nelem(op_table_main); i++)
+  {
+  spf(buf, sizeof(buf), CUS"_EXP_OP_%T", op_table_main[i]);
+  builtin_macro_create(buf);
+  }
+}
+static void
+expansion_conditions(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(cond_table); i++)
+  {
+  spf(buf, sizeof(buf), CUS"_EXP_COND_%T", cond_table[i]);
+  builtin_macro_create(buf);
+  }
+}
+static void
+expansion_variables(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(var_table); i++)
+  {
+  spf(buf, sizeof(buf), CUS"_EXP_VAR_%T", var_table[i].name);
+  builtin_macro_create(buf);
+  }
+}
+
+void
+expansions(void)
+{
+expansion_items();
+expansion_operators();
+expansion_conditions();
+expansion_variables();
+}
+
+#else	/*!MACRO_PREDEF*/
+
 static uschar var_buffer[256];
 static BOOL malformed_header;
 
@@ -6544,6 +6619,9 @@ 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;
@@ -6552,6 +6630,7 @@ 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)
@@ -6560,14 +6639,12 @@ 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",
@@ -8858,8 +8935,9 @@ search_tidyup();
 return 0;
 }
 
-#endif
+#endif	/*STAND_ALONE*/
 
+#endif	/*!MACRO_PREDEF*/
 /* vi: aw ai sw=2
 */
 /* End of expand.c */