Fix for bug 141730 (second try, with #ifdef this time). When forwarding inline or replying to an encrypted message, we need to decrypt the message body. R=kaie, SR=bienvenu,sspitzer

mailnews/mime/src/mimedrft.cpp

@@ -2092,14 +2092,12 @@ mime_bridge_create_draft_stream(
   if (! (mdd->options->prefs && NS_SUCCEEDED(rv)))
     goto FAIL;
 
-#ifdef FO_MAIL_MESSAGE_TO
   /* If we're attaching a message (for forwarding) then we must eradicate all
    traces of xlateion from it, since forwarding someone else a message
    that wasn't xlated for them doesn't work.  We have to dexlate it
    before sending it.
    */
-// RICHIE  mdd->options->dexlate_p = PR_TRUE;
-#endif /* FO_MAIL_MESSAGE_TO */
+  mdd->options->decrypt_p = PR_TRUE;
 
   obj = mime_new ( (MimeObjectClass *) &mimeMessageClass, (MimeHeaders *) NULL, MESSAGE_RFC822 );
   if ( !obj ) 

mailnews/mime/src/mimemsg.cpp

@@ -52,6 +52,7 @@
 #include "nsEscape.h"
 #include "nsString.h"
 #include "mimetext.h"
+#include "mimecryp.h"
 
 #define MIME_SUPERCLASS mimeContainerClass
 MimeDefClass(MimeMessage, MimeMessageClass, mimeMessageClass,
@@ -294,9 +295,10 @@ MimeMessage_close_headers (MimeObject *obj)
           (obj->options->decompose_file_p || obj->options->caller_need_root_headers) &&
 		  obj->options->decompose_headers_info_fn)
 		{
-#ifdef MOZ_SECURITY	
-HG09091
-#endif /* MOZ_SECURITY */			  
+#ifdef ENABLE_SMIME
+      if (obj->options->decrypt_p && !mime_crypto_object_p (msg->hdrs, PR_FALSE))
+        obj->options->decrypt_p = PR_FALSE;
+#endif /* ENABLE_SMIME */
       if (!obj->options->caller_need_root_headers || (obj == obj->options->state->root))
 		  	status = obj->options->decompose_headers_info_fn (
 												 obj->options->stream_closure,
@@ -385,9 +387,24 @@ HG09091
 		PR_FREEIF(mv);  /* done with this now. */
 	  }
 
-#ifdef MOZ_SECURITY
-    HG67023
-#endif /* MOZ_SECURITY */
+#ifdef ENABLE_SMIME
+    /* If this message has a body which is encrypted and we're going to
+       decrypt it (whithout converting it to HTML, since decrypt_p and
+       write_html_p are never true at the same time)
+    */
+    if (obj->output_p &&
+        obj->options &&
+        obj->options->decrypt_p &&
+        !mime_crypto_object_p (msg->hdrs, PR_FALSE))
+    {
+      /* The body of this message is not an encrypted object, so we need
+         to turn off the decrypt_p flag (to prevent us from s#$%ing the
+         body of the internal object up into one.) In this case,
+         our output will end up being identical to our input.
+      */
+      obj->options->decrypt_p = PR_FALSE;
+    }
+#endif /* ENABLE_SMIME */
 
 	  /* Emit the HTML for this message's headers.  Do this before
 		 creating the object representing the body.
@@ -555,9 +572,7 @@ MimeMessage_parse_eof (MimeObject *obj, PRBool abort_p)
 	   obj->options->decompose_file_p &&
 	   obj->options->done_parsing_outer_headers &&
 	   ! obj->options->is_multipart_msg &&
-#ifdef MOZ_SECURITY
-	   HG00234
-#endif /* MOZ_SECURITY */
+	   ! mime_typep(obj, (MimeObjectClass*) &mimeEncryptedClass) &&
 	   obj->options->decompose_file_close_fn ) {
 	status = obj->options->decompose_file_close_fn (
 											   obj->options->stream_closure );
@@ -593,9 +608,7 @@ MimeMessage_add_child (MimeObject *parent, MimeObject *child)
   if ( parent->options &&
 	   parent->options->decompose_file_p &&
 	   ! parent->options->is_multipart_msg &&
-#ifdef MOZ_SECURITY
-	   HG00234
-#endif /* MOZ_SECURITY */
+	   ! mime_typep(child, (MimeObjectClass*) &mimeEncryptedClass) &&
 	   parent->options->decompose_file_init_fn ) {
 	int status = 0;
 	status = parent->options->decompose_file_init_fn (