Check syscall return values.

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

diff --git a/src/src/transport.c b/src/src/transport.c
index e68a24dcbe7a4d313fdc4db112e132fd6a240217..160d080b99f270df9a1420b387d5d323298c7bea 100644 (file)
--- a/src/src/transport.c
+++ b/src/src/transport.c
@@ -1,10 +1,8 @@
-/* $Cambridge: exim/src/src/transport.c,v 1.26 2009/12/15 08:23:15 tom Exp $ */
-
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2012 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* General functions concerned with transportation, and generic options for all
@@ -70,11 +68,11 @@ optionlist optionlist_transports[] = {
                  (void *)(offsetof(transport_instance, envelope_to_add)) },
   { "group",             opt_expand_gid|opt_public,
                  (void *)offsetof(transport_instance, gid) },
-  { "headers_add",      opt_stringptr|opt_public,
+  { "headers_add",      opt_stringptr|opt_public|opt_rep_str,
                  (void *)offsetof(transport_instance, add_headers) },
   { "headers_only",     opt_bool|opt_public,
                  (void *)offsetof(transport_instance, headers_only) },
-  { "headers_remove",   opt_stringptr|opt_public,
+  { "headers_remove",   opt_stringptr|opt_public|opt_rep_str,
                  (void *)offsetof(transport_instance, remove_headers) },
   { "headers_rewrite",  opt_rewrite|opt_public,
                  (void *)offsetof(transport_instance, headers_rewrite) },
@@ -221,7 +219,7 @@ for (i = 0; i < 100; i++)
   if (transport_write_timeout <= 0)   /* No timeout wanted */
     {
     #ifdef SUPPORT_TLS
-    if (tls_active == fd) rc = tls_write(block, len); else
+    if (tls_out.active == fd) rc = tls_write(FALSE, block, len); else
     #endif
     rc = write(fd, block, len);
     save_errno = errno;
@@ -233,7 +231,7 @@ for (i = 0; i < 100; i++)
     {
     alarm(local_timeout);
     #ifdef SUPPORT_TLS
-    if (tls_active == fd) rc = tls_write(block, len); else
+    if (tls_out.active == fd) rc = tls_write(FALSE, block, len); else
     #endif
     rc = write(fd, block, len);
     save_errno = errno;
@@ -324,7 +322,7 @@ Returns:      the yield of transport_write_block()
 */
 
 BOOL
-transport_write_string(int fd, char *format, ...)
+transport_write_string(int fd, const char *format, ...)
 {
 va_list ap;
 va_start(ap, format);
@@ -426,6 +424,7 @@ for (ptr = start; ptr < end; ptr++)
 
     if (use_crlf) *chunk_ptr++ = '\r';
     *chunk_ptr++ = '\n';
+    transport_newlines++;
 
     /* The check_string test (formerly "from hack") replaces the specific
     string at the start of a line with an escape string (e.g. "From " becomes
@@ -920,19 +919,19 @@ if ((options & topt_no_body) == 0)
       }
     }
 
-  /* Finished with the check string */
-
-  nl_check_length = nl_escape_length = 0;
-
   /* A read error on the body will have left len == -1 and errno set. */
 
   if (len != 0) return FALSE;
+  }
 
-  /* If requested, add a terminating "." line (SMTP output). */
+/* Finished with the check string */
 
-  if ((options & topt_end_dot) != 0 && !write_chunk(fd, US".\n", 2, use_crlf))
-    return FALSE;
-  }
+nl_check_length = nl_escape_length = 0;
+
+/* If requested, add a terminating "." line (SMTP output). */
+
+if ((options & topt_end_dot) != 0 && !write_chunk(fd, US".\n", 2, use_crlf))
+  return FALSE;
 
 /* Write out any remaining data in the buffer before returning. */
 
@@ -1047,7 +1046,7 @@ dkim_transport_write_message(address_item *addr, int fd, int options,
       int siglen = Ustrlen(dkim_signature);
       while(siglen > 0) {
         #ifdef SUPPORT_TLS
-        if (tls_active == fd) wwritten = tls_write(dkim_signature, siglen); else
+        if (tls_out.active == fd) wwritten = tls_write(FALSE, dkim_signature, siglen); else
         #endif
         wwritten = write(fd,dkim_signature,siglen);
         if (wwritten == -1) {
@@ -1073,7 +1072,7 @@ dkim_transport_write_message(address_item *addr, int fd, int options,
      to the socket. However only if we don't use TLS,
      in which case theres another layer of indirection
      before the data finally hits the socket. */
-  if (tls_active != fd)
+  if (tls_out.active != fd)
     {
     ssize_t copied = 0;
     off_t offset = 0;
@@ -1097,7 +1096,7 @@ dkim_transport_write_message(address_item *addr, int fd, int options,
     /* write the chunk */
     DKIM_WRITE:
     #ifdef SUPPORT_TLS
-    if (tls_active == fd) wwritten = tls_write(US p, sread); else
+    if (tls_out.active == fd) wwritten = tls_write(FALSE, US p, sread); else
     #endif
     wwritten = write(fd,p,sread);
     if (wwritten == -1)
@@ -1227,9 +1226,14 @@ if ((write_pid = fork()) == 0)
     size_limit, add_headers, remove_headers, NULL, NULL,
     rewrite_rules, rewrite_existflags);
   save_errno = errno;
-  (void)write(pfd[pipe_write], (void *)&rc, sizeof(BOOL));
-  (void)write(pfd[pipe_write], (void *)&save_errno, sizeof(int));
-  (void)write(pfd[pipe_write], (void *)&(addr->more_errno), sizeof(int));
+  if (  write(pfd[pipe_write], (void *)&rc, sizeof(BOOL))
+        != sizeof(BOOL)
+     || write(pfd[pipe_write], (void *)&save_errno, sizeof(int))
+        != sizeof(int)
+     || write(pfd[pipe_write], (void *)&(addr->more_errno), sizeof(int))
+        != sizeof(int)
+     )
+    rc = FALSE;        /* compiler quietening */
   _exit(0);
   }
 save_errno = errno;
@@ -1340,11 +1344,11 @@ if (write_pid > 0)
     if (rc == 0)
       {
       BOOL ok;
-      (void)read(pfd[pipe_read], (void *)&ok, sizeof(BOOL));
+      int dummy = read(pfd[pipe_read], (void *)&ok, sizeof(BOOL));
       if (!ok)
         {
-        (void)read(pfd[pipe_read], (void *)&save_errno, sizeof(int));
-        (void)read(pfd[pipe_read], (void *)&(addr->more_errno), sizeof(int));
+        dummy = read(pfd[pipe_read], (void *)&save_errno, sizeof(int));
+        dummy = read(pfd[pipe_read], (void *)&(addr->more_errno), sizeof(int));
         yield = FALSE;
         }
       }