Import Debian changes 4.92-8+deb10u3

[hcoop/debian/exim4.git] / src / routers / iplookup.c

diff --git a/src/routers/iplookup.c b/src/routers/iplookup.c
index 96e9626..ff67af3 100644 (file)
--- a/src/routers/iplookup.c
+++ b/src/routers/iplookup.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -44,6 +44,20 @@ address can appear in the tables drtables.c. */
 int iplookup_router_options_count =
   sizeof(iplookup_router_options)/sizeof(optionlist);
 
+
+#ifdef MACRO_PREDEF
+
+/* Dummy entries */
+iplookup_router_options_block iplookup_router_option_defaults = {0};
+void iplookup_router_init(router_instance *rblock) {}
+int iplookup_router_entry(router_instance *rblock, address_item *addr,
+  struct passwd *pw, int verify, address_item **addr_local,
+  address_item **addr_remote, address_item **addr_new,
+  address_item **addr_succeed) {return 0;}
+
+#else   /*!MACRO_PREDEF*/
+
+
 /* Default private options block for the iplookup router. */
 
 iplookup_router_options_block iplookup_router_option_defaults = {
@@ -216,7 +230,8 @@ while ((hostname = string_nextinlist(&listptr, &sep, host_buffer,
 
   for (h = host; h; h = h->next)
     {
-    int host_af, query_socket;
+    int host_af;
+    client_conn_ctx query_cctx = {0};
 
     /* Skip any hosts for which we have no address */
 
@@ -227,9 +242,9 @@ while ((hostname = string_nextinlist(&listptr, &sep, host_buffer,
 
     host_af = (Ustrchr(h->address, ':') != NULL)? AF_INET6 : AF_INET;
 
-    query_socket = ip_socket(ob->protocol == ip_udp ? SOCK_DGRAM:SOCK_STREAM,
+    query_cctx.sock = ip_socket(ob->protocol == ip_udp ? SOCK_DGRAM:SOCK_STREAM,
       host_af);
-    if (query_socket < 0)
+    if (query_cctx.sock < 0)
       {
       if (ob->optional) return PASS;
       addr->message = string_sprintf("failed to create socket in %s router",
@@ -240,11 +255,12 @@ while ((hostname = string_nextinlist(&listptr, &sep, host_buffer,
     /* Connect to the remote host, under a timeout. In fact, timeouts can occur
     here only for TCP calls; for a UDP socket, "connect" always works (the
     router will timeout later on the read call). */
+/*XXX could take advantage of TFO */
 
-    if (ip_connect(query_socket, host_af, h->address,ob->port, ob->timeout,
-                       ob->protocol != ip_udp) < 0)
+    if (ip_connect(query_cctx.sock, host_af, h->address,ob->port, ob->timeout,
+               ob->protocol == ip_udp ? NULL : &tcp_fastopen_nodata) < 0)
       {
-      close(query_socket);
+      close(query_cctx.sock);
       DEBUG(D_route)
         debug_printf("connection to %s failed: %s\n", h->address,
           strerror(errno));
@@ -253,18 +269,18 @@ while ((hostname = string_nextinlist(&listptr, &sep, host_buffer,
 
     /* Send the query. If it fails, just continue with the next address. */
 
-    if (send(query_socket, query, query_len, 0) < 0)
+    if (send(query_cctx.sock, query, query_len, 0) < 0)
       {
       DEBUG(D_route) debug_printf("send to %s failed\n", h->address);
-      (void)close(query_socket);
+      (void)close(query_cctx.sock);
       continue;
       }
 
     /* Read the response and close the socket. If the read fails, try the
     next IP address. */
 
-    count = ip_recv(query_socket, reply, sizeof(reply) - 1, ob->timeout);
-    (void)close(query_socket);
+    count = ip_recv(&query_cctx, reply, sizeof(reply) - 1, ob->timeout);
+    (void)close(query_cctx.sock);
     if (count <= 0)
       {
       DEBUG(D_route) debug_printf("%s from %s\n", (errno == ETIMEDOUT)?
@@ -379,7 +395,6 @@ the chain of new addressess. */
 new_addr = deliver_make_addr(reroute, TRUE);
 new_addr->parent = addr;
 
-copyflag(new_addr, addr, af_propagate);
 new_addr->prop = addr->prop;
 
 if (addr->child_count == USHRT_MAX)
@@ -389,7 +404,7 @@ addr->child_count++;
 new_addr->next = *addr_new;
 *addr_new = new_addr;
 
-/* Set up the errors address, if any, and the additional and removeable headers
+/* Set up the errors address, if any, and the additional and removable headers
 for this new address. */
 
 rc = rf_get_errors_address(addr, rblock, verify, &new_addr->prop.errors_address);
@@ -402,4 +417,5 @@ if (rc != OK) return rc;
 return OK;
 }
 
+#endif   /*!MACRO_PREDEF*/
 /* End of routers/iplookup.c */