X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/9aa512a1898155484e00ee089057d28f2432b30e..6f5d1ca3b1563d0ed580a43ba711b3534b19234e:/src/src/route.c

diff --git a/src/src/route.c b/src/src/route.c
index 0116e12af..6ba1d9f10 100644
--- a/src/src/route.c
+++ b/src/src/route.c
@@ -58,6 +58,10 @@ optionlist optionlist_routers[] = {
                  (void *)offsetof(router_instance, domains) },
   { "driver",             opt_stringptr|opt_public,
                  (void *)offsetof(router_instance, driver_name) },
+  #ifdef EXPERIMENTAL_DSN
+  { "dsn_lasthop",        opt_bool|opt_public,
+                 (void *)offsetof(router_instance, dsn_lasthop) },
+  #endif
   { "errors_to",          opt_stringptr|opt_public,
                  (void *)(offsetof(router_instance, errors_to)) },
   { "expn",               opt_bool|opt_public,
@@ -270,6 +274,15 @@ for (r = routers; r != NULL; r = r->next)
 
   if (r->pass_router_name != NULL)
     set_router(r, r->pass_router_name, &(r->pass_router), TRUE);
+
+  #ifdef EXPERIMENTAL_DSN
+    DEBUG(D_route) {
+      if (r->dsn_lasthop == FALSE)
+        debug_printf("DSN: %s propagating DSN\n", r->name);
+      else
+        debug_printf("DSN: %s lasthop set\n", r->name);
+      }
+  #endif
   }
 }
 
@@ -1412,6 +1425,10 @@ new->p.errors_address = parent->p.errors_address;
 
 copyflag(new, addr, af_propagate);
 new->p.address_data = addr->p.address_data;
+#ifdef EXPERIMENTAL_DSN
+new->dsn_flags = addr->dsn_flags;
+new->dsn_orcpt = addr->dsn_orcpt;
+#endif
 
 
 /* As it has turned out, we haven't set headers_add or headers_remove for the
@@ -1719,6 +1736,17 @@ for (r = (addr->start_router == NULL)? routers : addr->start_router;
 
   /* Run the router, and handle the consequences. */
 
+#ifdef EXPERIMENTAL_DSN
+/* ... but let us check on DSN before. If this should be the last hop for DSN
+   set flag
+*/
+  if ((r->dsn_lasthop == TRUE) && ((addr->dsn_flags & rf_dsnlasthop) == 0))
+  {
+    addr->dsn_flags |= rf_dsnlasthop;
+    HDEBUG(D_route) debug_printf("DSN: last hop for %s\n", addr->address);
+  }
+#endif
+
   HDEBUG(D_route) debug_printf("calling %s router\n", r->name);
 
   yield = (r->info->code)(r, addr, pw, verify, paddr_local, paddr_remote,