From 21492a45bd019f67c151717cea319c7bad89db4a Mon Sep 17 00:00:00 2001
From: Art Cancro <ajc@citadel.org>
Date: Wed, 21 Oct 2009 17:30:28 +0000
Subject: [PATCH] * New command 'WIKI history|<pagename>' to list the revision
 history for a wiki page. * History format has changed again -- delete any
 experimental wiki rooms you have created.  The memo field now contains a UUID
 for each edit, which we will use for identifying revisions because the MIME
 part numbers will change with each edit.  Also moved the timestamp into the
 second field position, followed by the username and nodename.  No longer
 saving the user's Internet email address.

---
 citadel/modules/wiki/serv_wiki.c | 89 ++++++++++++++++++++++++++++++--
 citadel/msgbase.c                | 15 ++++++
 webcit/roomops.c                 |  2 +-
 3 files changed, 100 insertions(+), 6 deletions(-)

diff --git a/citadel/modules/wiki/serv_wiki.c b/citadel/modules/wiki/serv_wiki.c
index 522775c4b..1a0db4479 100644
--- a/citadel/modules/wiki/serv_wiki.c
+++ b/citadel/modules/wiki/serv_wiki.c
@@ -252,12 +252,16 @@ int wiki_upload_beforesave(struct CtdlMessage *msg) {
 		ptr = bmstrcasestr(history_msg->cm_fields['M'], prefixed_boundary);
 		if (ptr != NULL) {
 			char *the_rest_of_it = strdup(ptr);
+			char uuid[32];
 			char memo[512];
 			char encoded_memo[768];
-			snprintf(memo, sizeof memo, "%s|%s|%ld", 
+			generate_uuid(uuid);
+			snprintf(memo, sizeof memo, "%s|%ld|%s|%s", 
+				uuid,
+				time(NULL),
 				CCC->user.fullname,
-				CCC->cs_inet_email,
-				time(NULL)
+				config.c_nodename
+				/* no longer logging CCC->cs_inet_email */
 			);
 			CtdlEncodeBase64(encoded_memo, memo, strlen(memo), 0);
 			sprintf(ptr, "--%s\n"
@@ -291,14 +295,89 @@ int wiki_upload_beforesave(struct CtdlMessage *msg) {
 }
 
 
+/*
+ * MIME Parser callback for wiki_history()
+ *
+ * The "filename" field will contain a memo field.  All we have to do is decode
+ * the base64 and output it.  The data is already in a delimited format suitable
+ * for our client protocol.
+ */
+void wiki_history_callback(char *name, char *filename, char *partnum, char *disp,
+		   void *content, char *cbtype, char *cbcharset, size_t length,
+		   char *encoding, char *cbid, void *cbuserdata)
+{
+	char memo[1024];
+
+	CtdlDecodeBase64(memo, filename, strlen(filename));
+	cprintf("%s\n", memo);
+}
+
+
+/*
+ * Fetch a list of revisions for a particular wiki page
+ */
+void wiki_history(char *pagename) {
+	int r;
+	char history_page_name[270];
+	long msgnum;
+	struct CtdlMessage *msg;
+
+	r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
+	if (r != om_ok) {
+		if (r == om_not_logged_in) {
+			cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
+		}
+		else {
+			cprintf("%d An unknown error has occurred.\n", ERROR);
+		}
+		return;
+	}
+
+	snprintf(history_page_name, sizeof history_page_name, "%s_HISTORY_", pagename);
+	msgnum = locate_message_by_euid(history_page_name, &CC->room);
+	if (msgnum > 0L) {
+		msg = CtdlFetchMessage(msgnum, 1);
+	}
+	else {
+		msg = NULL;
+	}
+
+	if ((msg != NULL) && (msg->cm_fields['M'] == NULL)) {
+		CtdlFreeMessage(msg);
+		msg = NULL;
+	}
+
+	if (msg == NULL) {
+		cprintf("%d Revision history for '%s' was not found.\n", ERROR+MESSAGE_NOT_FOUND, pagename);
+		return;
+	}
+
+	
+	cprintf("%d Revision history for '%s'\n", LISTING_FOLLOWS, pagename);
+	mime_parser(msg->cm_fields['M'], NULL, *wiki_history_callback, NULL, NULL, NULL, 0);
+	cprintf("000\n");
+
+	CtdlFreeMessage(msg);
+	return;
+}
+
 
 /*
  * commands related to wiki management
  */
 void cmd_wiki(char *argbuf) {
-	cprintf("%d FIXME not finished\n", ERROR);
+	char subcmd[32];
+	char pagename[256];
+
+	extract_token(subcmd, argbuf, 0, '|', sizeof subcmd);
+
+	if (!strcasecmp(subcmd, "history")) {
+		extract_token(pagename, argbuf, 1, '|', sizeof subcmd);
+		wiki_history(pagename);
+		return;
+	}
 
-	/* mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0); */
+	cprintf("%d Invalid subcommand\n", ERROR + CMD_NOT_SUPPORTED);
 }
 
 
diff --git a/citadel/msgbase.c b/citadel/msgbase.c
index c90ef0e2c..1e1b3a198 100644
--- a/citadel/msgbase.c
+++ b/citadel/msgbase.c
@@ -2,7 +2,22 @@
  * $Id$
  *
  * Implements the message store.
+ * 
+ * Copyright (c) 1987-2009 by the citadel.org team
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
  *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #include "sysdep.h"
diff --git a/webcit/roomops.c b/webcit/roomops.c
index 99806edb1..456b19ce6 100644
--- a/webcit/roomops.c
+++ b/webcit/roomops.c
@@ -44,7 +44,7 @@ int is_view_allowed_as_default(int which_view)
 		case VIEW_CALENDAR:	return(1);
 		case VIEW_TASKS:	return(1);
 		case VIEW_NOTES:	return(1);
-		case VIEW_WIKI:		return(0);	/* because it isn't finished yet */
+		case VIEW_WIKI:		return(1);
 		case VIEW_CALBRIEF:	return(0);
 		case VIEW_JOURNAL:	return(0);
 		default:		return(0);	/* should never get here */
-- 
2.30.2