Update version number and copyright year.

[exim.git] / src / src / acl.c

diff --git a/src/src/acl.c b/src/src/acl.c
index 8274e0c73f00704467b8d985284ecb25ce82d736..73f0614af92b3ee1483ff827dc0100e24f683bbf 100644 (file)
--- a/src/src/acl.c
+++ b/src/src/acl.c
@@ -1,10 +1,10 @@
-/* $Cambridge: exim/src/src/acl.c,v 1.66 2006/09/25 10:14:20 ph10 Exp $ */
+/* $Cambridge: exim/src/src/acl.c,v 1.68 2007/01/08 10:50:17 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2006 */
+/* Copyright (c) University of Cambridge 1995 - 2007 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* Code for handling Access Control Lists (ACLs) */
@@ -27,9 +27,20 @@ static uschar *verbs[] =
   { US"accept", US"defer", US"deny", US"discard", US"drop", US"require",
     US"warn" };
 
-/* For each verb, the condition for which "message" is used */
-
-static int msgcond[] = { FAIL, OK, OK, FAIL, OK, FAIL, OK };
+/* For each verb, the conditions for which "message" or "log_message" are used
+are held as a bitmap. This is to avoid expanding the strings unnecessarily. For
+"accept", the FAIL case is used only after "endpass", but that is selected in
+the code. */
+
+static int msgcond[] = {
+  (1<<OK) | (1<<FAIL) | (1<<FAIL_DROP),  /* accept */
+  (1<<OK),                               /* defer */
+  (1<<OK),                               /* deny */
+  (1<<OK) | (1<<FAIL) | (1<<FAIL_DROP),  /* discard */
+  (1<<OK),                               /* drop */
+  (1<<FAIL) | (1<<FAIL_DROP),            /* require */
+  (1<<OK)                                /* warn */
+  };
 
 /* ACL condition and modifier codes - keep in step with the table that
 follows, and the cond_expand_at_top and uschar cond_modifiers tables lower
@@ -3035,13 +3046,8 @@ for (; cb != NULL; cb = cb->next)
 
 
 /* If the result is the one for which "message" and/or "log_message" are used,
-handle the values of these options. Most verbs have but a single return for
-which the messages are relevant, but for "discard", it's useful to have the log
-message both when it succeeds and when it fails. Also, for an "accept" that
-appears in a QUIT ACL, we want to handle the user message. Since only "accept"
-and "warn" are permitted in that ACL, we don't need to test the verb.
-
-These modifiers act in different ways:
+handle the values of these modifiers. If there isn't a log message set, we make
+it the same as the user message.
 
 "message" is a user message that will be included in an SMTP response. Unless
 it is empty, it overrides any previously set user message.
@@ -3049,23 +3055,29 @@ it is empty, it overrides any previously set user message.
 "log_message" is a non-user message, and it adds to any existing non-user
 message that is already set.
 
-If there isn't a log message set, we make it the same as the user message. */
+Most verbs have but a single return for which the messages are relevant, but
+for "discard", it's useful to have the log message both when it succeeds and
+when it fails. For "accept", the message is used in the OK case if there is no
+"endpass", but (for backwards compatibility) in the FAIL case if "endpass" is
+present. */
 
-if (((rc == FAIL_DROP)? FAIL : rc) == msgcond[verb] ||
-    (verb == ACL_DISCARD && rc == OK) ||
-    (where == ACL_WHERE_QUIT))
+if (*epp && rc == OK) user_message = NULL;
+
+if (((1<<rc) & msgcond[verb]) != 0)
   {
   uschar *expmessage;
+  uschar *old_user_msgptr = *user_msgptr;
+  uschar *old_log_msgptr = (*log_msgptr != NULL)? *log_msgptr : old_user_msgptr;
 
   /* If the verb is "warn", messages generated by conditions (verification or
-  nested ACLs) are discarded. Only messages specified at this level are used.
+  nested ACLs) are always discarded. This also happens for acceptance verbs
+  when they actually do accept. Only messages specified at this level are used.
   However, the value of an existing message is available in $acl_verify_message
   during expansions. */
 
-  uschar *old_user_msgptr = *user_msgptr;
-  uschar *old_log_msgptr = (*log_msgptr != NULL)? *log_msgptr : old_user_msgptr;
-
-  if (verb == ACL_WARN) *log_msgptr = *user_msgptr = NULL;
+  if (verb == ACL_WARN ||
+      (rc == OK && (verb == ACL_ACCEPT || verb == ACL_DISCARD)))
+    *log_msgptr = *user_msgptr = NULL;
 
   if (user_message != NULL)
     {
@@ -3595,10 +3607,10 @@ if (rc == FAIL_DROP && where == ACL_WHERE_MAILAUTH)
   return ERROR;
   }
 
-/* Before giving an error response, take a look at the length of any user
-message, and split it up into multiple lines if possible. */
+/* Before giving a response, take a look at the length of any user message, and
+split it up into multiple lines if possible. */
 
-if (rc != OK && *user_msgptr != NULL && Ustrlen(*user_msgptr) > 75)
+if (*user_msgptr != NULL && Ustrlen(*user_msgptr) > 75)
   {
   uschar *s = *user_msgptr = string_copy(*user_msgptr);
   uschar *ss = s;