No longer calculate, store, or look-up hashes for the mail database.

Since we're not using the message-ID for dupe checking or threading and we
already have a mechanism in place for body text dupe detection (via CRC-32)
the hash mechanism is providing an unnecessary burden on the mail database.

src/sbbs3/chksmb.c

@@ -8,7 +8,7 @@
  * @format.tab-size 4		(Plain Text/Source Code File Header)			*
  * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
  *																			*
- * Copyright 2004 Rob Swindell - http://www.synchro.net/copyright.html		*
+ * Copyright 2005 Rob Swindell - http://www.synchro.net/copyright.html		*
  *																			*
  * This program is free software; you can redistribute it and/or			*
  * modify it under the terms of the GNU General Public License				*
@@ -340,10 +340,11 @@ int main(int argc, char **argv)
 			}
 		}
 
-		if(chkhash) {
+		if(!(smb.status.attr&SMB_EMAIL) && chkhash) {
 			/* Look-up the message hashes */
 			hashes=smb_msghashes(&msg,body);
-			if(hashes[0]!=NULL 
+			if(hashes!=NULL 
+				&& hashes[0]!=NULL 
 				&& (i=smb_findhash(&smb,hashes,NULL,SMB_HASH_SOURCE_ALL,/* mark */TRUE ))
 					!=SMB_SUCCESS) {
 				for(h=0;hashes[h]!=NULL;h++) {

src/smblib/smbadd.c

@@ -8,7 +8,7 @@
  * @format.tab-size 4		(Plain Text/Source Code File Header)			*
  * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
  *																			*
- * Copyright 2004 Rob Swindell - http://www.synchro.net/copyright.html		*
+ * Copyright 2005 Rob Swindell - http://www.synchro.net/copyright.html		*
  *																			*
  * This library is free software; you can redistribute it and/or			*
  * modify it under the terms of the GNU Lesser General Public License		*
@@ -83,16 +83,19 @@ int SMBCALL smb_addmsg(smb_t* smb, smbmsg_t* msg, int storage, long dupechk_hash
 			break;
 
 		msg->hdr.number=smb->status.last_msg+1;
-		hashes=smb_msghashes(msg,body);
-
-		if(smb_findhash(smb, hashes, &found, dupechk_hashes, /* mark? */FALSE)==SMB_SUCCESS) {
-			safe_snprintf(smb->last_error,sizeof(smb->last_error)
-				,"duplicate %s: %s found in message #%lu"
-				,smb_hashsourcetype(found.source)
-				,smb_hashsource(msg,found.source)
-				,found.number);
-			retval=SMB_DUPE_MSG;
-			break;
+		if(!(smb->status.attr&SMB_EMAIL)) {
+
+			hashes=smb_msghashes(msg,body);
+
+			if(smb_findhash(smb, hashes, &found, dupechk_hashes, /* mark? */FALSE)==SMB_SUCCESS) {
+				safe_snprintf(smb->last_error,sizeof(smb->last_error)
+					,"duplicate %s: %s found in message #%lu"
+					,smb_hashsourcetype(found.source)
+					,smb_hashsource(msg,found.source)
+					,found.number);
+				retval=SMB_DUPE_MSG;
+				break;
+			}
 		}
 
 		if(tail!=NULL && (taillen=strlen(tail))>0)
@@ -290,7 +293,8 @@ int SMBCALL smb_addmsg(smb_t* smb, smbmsg_t* msg, int storage, long dupechk_hash
 			}
 		}
 
-		if(smb_addhashes(smb,hashes,/* skip_marked? */FALSE)==SMB_SUCCESS)
+		if(!(smb->status.attr&SMB_EMAIL)
+			&& smb_addhashes(smb,hashes,/* skip_marked? */FALSE)==SMB_SUCCESS)
 			msg->flags|=MSG_FLAG_HASHED;
 		if(msg->to==NULL)	/* no recipient, don't add header (required for bulkmail) */
 			break;

src/smblib/smbhash.c

@@ -257,6 +257,9 @@ int SMBCALL smb_hashmsg(smb_t* smb, smbmsg_t* msg, const uchar* text, BOOL updat
 	hash_t		found;
 	hash_t**	hashes;	/* This is a NULL-terminated list of hashes */
 
+	if(smb->status.attr&SMB_EMAIL)
+		return(SMB_SUCCESS);
+
 	hashes=smb_msghashes(msg,text);
 
 	if(smb_findhash(smb, hashes, &found, SMB_HASH_SOURCE_ALL, update)==SMB_SUCCESS && !update) {