From ffe9ea29a8fd7dfeb7c89760fde32b3f53f19a50 Mon Sep 17 00:00:00 2001
From: Wilfried Goesgens <dothebart@citadel.org>
Date: Sun, 20 Jan 2013 16:26:54 +0100
Subject: [PATCH] Add function to in-memory duplicate a message.

---
 citadel/msgbase.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 citadel/msgbase.h |  1 +
 2 files changed, 43 insertions(+)

diff --git a/citadel/msgbase.c b/citadel/msgbase.c
index 6320144f4..78fda6fa2 100644
--- a/citadel/msgbase.c
+++ b/citadel/msgbase.c
@@ -1312,6 +1312,48 @@ void CtdlFreeMessage(struct CtdlMessage *msg)
 	free(msg);
 }
 
+int DupCMField(int i, struct CtdlMessage *OrgMsg, struct CtdlMessage *NewMsg)
+{
+	long len;
+	len = strlen(OrgMsg->cm_fields[i]);
+	NewMsg->cm_fields[i] = malloc(len + 1);
+	if (NewMsg->cm_fields[i] == NULL)
+		return 0;
+	memcpy(NewMsg->cm_fields[i], OrgMsg->cm_fields[i], len);
+	return 1;
+}
+
+struct CtdlMessage * CtdlDuplicateMessage(struct CtdlMessage *OrgMsg)
+{
+	int i;
+	struct CtdlMessage *NewMsg;
+
+	if (is_valid_message(OrgMsg) == 0) 
+		return NULL;
+	NewMsg = (struct CtdlMessage *)malloc(sizeof(struct CtdlMessage *));
+	if (NewMsg == NULL)
+		return NULL;
+
+	memcpy(NewMsg, OrgMsg, sizeof(struct CtdlMessage *));
+
+	memset(NewMsg->cm_fields, 0, sizeof(NewMsg->cm_fields));
+	
+	for (i = 0; i < 256; ++i)
+	{
+		if (OrgMsg->cm_fields[i] != NULL)
+		{
+			if (!DupCMField(i, OrgMsg, NewMsg))
+			{
+				CtdlFreeMessage(NewMsg);
+				return NULL;
+			}
+		}
+	}
+
+	return NewMsg;
+}
+
+
 
 /*
  * Pre callback function for multipart/alternative
diff --git a/citadel/msgbase.h b/citadel/msgbase.h
index 888b62725..838a9792a 100644
--- a/citadel/msgbase.h
+++ b/citadel/msgbase.h
@@ -160,6 +160,7 @@ void CtdlWriteObject(char *req_room,			/* Room to stuff it in */
 			unsigned int flags		/* Internal save flags */
 );
 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body);
+struct CtdlMessage * CtdlDuplicateMessage(struct CtdlMessage *OrgMsg);
 void CtdlFreeMessage(struct CtdlMessage *msg);
 void CtdlFreeMessageContents(struct CtdlMessage *msg);
 void serialize_message(struct ser_ret *, struct CtdlMessage *);
-- 
2.30.2