ARC: fix signing when DKIM-signing is also being done

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

diff --git a/src/src/spool_mbox.c b/src/src/spool_mbox.c
index 89bdb7ddccc9e1f5c4d6468614fd1f1bc9dfe5f2..749484f2b0974bd891dffaf847033731de4f7b4d 100644 (file)
--- a/src/src/spool_mbox.c
+++ b/src/src/spool_mbox.c
@@ -4,7 +4,7 @@
 
 /* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003 - 2015
  * License: GPL
- * Copyright (c) The Exim Maintainers 2016
+ * Copyright (c) The Exim Maintainers 2016 - 2018
  */
 
 /* Code for setting up a MBOX style spool file inside a /scan/<msgid>
@@ -62,8 +62,8 @@ if (!spool_mbox_ok)
     }
 
   /* open [message_id].eml file for writing */
-  mbox_file = modefopen(mbox_path, "wb", SPOOL_MODE);
-  if (mbox_file == NULL)
+
+  if (!(mbox_file = modefopen(mbox_path, "wb", SPOOL_MODE)))
     {
     log_write(0, LOG_MAIN|LOG_PANIC, "%s", string_open_failed(errno,
       "scan file %s", mbox_path));
@@ -80,33 +80,25 @@ if (!spool_mbox_ok)
     "${if def:sender_address{X-Envelope-From: <${sender_address}>\n}}"
     "${if def:recipients{X-Envelope-To: ${recipients}\n}}");
 
-  if (temp_string != NULL)
-    {
-    i = fwrite(temp_string, Ustrlen(temp_string), 1, mbox_file);
-    if (i != 1)
+  if (temp_string)
+    if (fwrite(temp_string, Ustrlen(temp_string), 1, mbox_file) != 1)
       {
       log_write(0, LOG_MAIN|LOG_PANIC, "Error/short write while writing \
          mailbox headers to %s", mbox_path);
       goto OUT;
       }
-    }
 
-  /* write all header lines to mbox file */
-  my_headerlist = header_list;
-  for (my_headerlist = header_list; my_headerlist != NULL;
-    my_headerlist = my_headerlist->next)
-    {
-    /* skip deleted headers */
-    if (my_headerlist->type == '*') continue;
+  /* write all non-deleted header lines to mbox file */
 
-    i = fwrite(my_headerlist->text, my_headerlist->slen, 1, mbox_file);
-    if (i != 1)
-      {
-      log_write(0, LOG_MAIN|LOG_PANIC, "Error/short write while writing \
-         message headers to %s", mbox_path);
-      goto OUT;
-      }
-    }
+  for (my_headerlist = header_list; my_headerlist;
+      my_headerlist = my_headerlist->next)
+    if (my_headerlist->type != '*')
+      if (fwrite(my_headerlist->text, my_headerlist->slen, 1, mbox_file) != 1)
+       {
+       log_write(0, LOG_MAIN|LOG_PANIC, "Error/short write while writing \
+           message headers to %s", mbox_path);
+       goto OUT;
+       }
 
   /* End headers */
   if (fwrite("\n", 1, 1, mbox_file) != 1)
@@ -140,7 +132,7 @@ if (!spool_mbox_ok)
   /* The code used to use this line, but it doesn't work in Cygwin.
 
       (void)fread(data_buffer, 1, 18, data_file);
-    
+
      What's happening is that spool_mbox used to use an fread to jump over the
      file header. That fails under Cygwin because the header is locked, but
      doing an fseek succeeds. We have to output the leading newline
@@ -151,18 +143,32 @@ if (!spool_mbox_ok)
 
   do
     {
-    j = fread(buffer, 1, sizeof(buffer), data_file);
+    uschar * s;
+
+    if (!spool_file_wireformat || source_file_override)
+      j = fread(buffer, 1, sizeof(buffer), data_file);
+    else                                               /* needs CRLF -> NL */
+      if ((s = US fgets(CS buffer, sizeof(buffer), data_file)))
+       {
+       uschar * p = s + Ustrlen(s) - 1;
+
+       if (*p == '\n' && p[-1] == '\r')
+         *--p = '\n';
+       else if (*p == '\r')
+         ungetc(*p--, data_file);
+
+       j = p - buffer;
+       }
+      else
+       j = 0;
 
     if (j > 0)
-      {
-      i = fwrite(buffer, j, 1, mbox_file);
-      if (i != 1)
+      if (fwrite(buffer, j, 1, mbox_file) != 1)
         {
        log_write(0, LOG_MAIN|LOG_PANIC, "Error/short write while writing \
            message body to %s", mbox_path);
        goto OUT;
        }
-      }
     } while (j > 0);
 
   (void)fclose(mbox_file);
@@ -210,8 +216,7 @@ if (spool_mbox_ok && !no_mbox_unspool)
 
   mbox_path = string_sprintf("%s/scan/%s", spool_directory, spooled_message_id);
 
-  tempdir = opendir(CS mbox_path);
-  if (!tempdir)
+  if (!(tempdir = opendir(CS mbox_path)))
     {
     debug_printf("Unable to opendir(%s): %s\n", mbox_path, strerror(errno));
     /* Just in case we still can: */
@@ -219,7 +224,7 @@ if (spool_mbox_ok && !no_mbox_unspool)
     return;
     }
   /* loop thru dir & delete entries */
-  while((entry = readdir(tempdir)) != NULL)
+  while((entry = readdir(tempdir)))
     {
     uschar *name = US entry->d_name;
     int dummy;
@@ -227,7 +232,7 @@ if (spool_mbox_ok && !no_mbox_unspool)
 
     file_path = string_sprintf("%s/%s", mbox_path, name);
     debug_printf("unspool_mbox(): unlinking '%s'\n", file_path);
-    dummy = unlink(CS file_path);
+    dummy = unlink(CS file_path); dummy = dummy;       /* compiler quietening */
     }
 
   closedir(tempdir);