* 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 (file)
index 0000000..7cb5c60
--- /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 "$Id$";
+}