From: Art Cancro <ajc@citadel.org>
Date: Wed, 14 Oct 2009 03:34:05 +0000 (+0000)
Subject: * Checked in a skeleton module for the server-side handlers of wiki rooms
X-Git-Tag: v7.86~761
X-Git-Url: https://code.citadel.org/?p=citadel.git;a=commitdiff_plain;h=e9085b752ab7b745127ac07fef8d62c4140b06d2

* Checked in a skeleton module for the server-side handlers of wiki rooms
---

diff --git a/citadel/modules/wiki/serv_wiki.c b/citadel/modules/wiki/serv_wiki.c
new file mode 100644
index 000000000..7cb5c60fa
--- /dev/null
+++ b/citadel/modules/wiki/serv_wiki.c
@@ -0,0 +1,116 @@
+/*
+ * $Id$
+ *
+ * Server-side module for Wiki rooms.  This will handle things like version control. 
+ * 
+ * Copyright (c) 2009 / released under the GNU General Public License v3
+ */
+
+#include "sysdep.h"
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <pwd.h>
+#include <errno.h>
+#include <ctype.h>
+#include <sys/types.h>
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+
+#include <sys/wait.h>
+#include <string.h>
+#include <limits.h>
+#include <libcitadel.h>
+#include "citadel.h"
+#include "server.h"
+#include "citserver.h"
+#include "support.h"
+#include "config.h"
+#include "control.h"
+#include "room_ops.h"
+#include "user_ops.h"
+#include "policy.h"
+#include "database.h"
+#include "msgbase.h"
+#include "euidindex.h"
+#include "ctdl_module.h"
+
+/*
+ * Before allowing a wiki page save to execute, we have to perform version control.
+ * This involves fetching the old version of the page if it exists... FIXME finish this
+ */
+int wiki_upload_beforesave(struct CtdlMessage *msg) {
+	struct CitContext *CCC = CC;
+	long old_msgnum = (-1L);
+	struct CtdlMessage *old_msg = NULL;
+	int no_changes_were_made = 0;
+
+	if (!CCC->logged_in) return(0);	/* Only do this if logged in. */
+
+	/* Is this a room with a Wiki in it, don't run this hook. */
+	if (CCC->room.QRdefaultview != VIEW_WIKI) {
+		return(0);
+	}
+
+	/* If this isn't a MIME message, don't bother. */
+	if (msg->cm_format_type != 4) return(0);
+
+	/* If there's no EUID we can't do this. */
+	if (msg->cm_fields['E'] == NULL) return(0);
+
+	/* See if we can retrieve the previous version. */
+	old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CCC->room);
+	if (old_msgnum <= 0L) return(0);
+
+	old_msg = CtdlFetchMessage(old_msgnum, 1);
+	if (old_msg == NULL) return(0);
+
+	if ((msg->cm_fields['M'] != NULL) && (old_msg->cm_fields['M'] != NULL)) {
+
+		/* If no changes were made, don't bother saving it again */
+		if (!strcmp(msg->cm_fields['M'], old_msg->cm_fields['M'])) {
+			no_changes_were_made = 1;
+		}
+
+		/* FIXME here's where diffs should be generated
+		 *
+		FILE *fp;
+		fp = fopen("/tmp/new.txt", "w");
+		fwrite(msg->cm_fields['M'], strlen(msg->cm_fields['M']), 1, fp);
+		fclose(fp);
+		fp = fopen("/tmp/old.txt", "w");
+		fwrite(old_msg->cm_fields['M'], strlen(old_msg->cm_fields['M']), 1, fp);
+		fclose(fp);
+		 *
+		 */
+	}
+
+	CtdlFreeMessage(old_msg);
+	return(no_changes_were_made);
+}
+
+
+/*
+ * Module initialization
+ */
+CTDL_MODULE_INIT(wiki)
+{
+	if (!threading)
+	{
+		CtdlRegisterMessageHook(wiki_upload_beforesave, EVT_BEFORESAVE);
+	}
+
+	/* return our Subversion id for the Log */
+	return "$Id$";
+}