From 91166cf4b149a3c5fbaba16529788420954d4fab Mon Sep 17 00:00:00 2001
From: Christian Persch <chpe@cvs.gnome.org>
Date: Wed, 26 Nov 2003 18:43:05 +0000
Subject: Implement disabling unsafe protocols for lock-down mode.

2003-11-26  Christian Persch  <chpe@cvs.gnome.org>

	* embed/mozilla/EphyContentPolicy.cpp:
	* embed/mozilla/EphyContentPolicy.h:
	* embed/mozilla/Makefile.am:
	* embed/mozilla/MozRegisterComponents.cpp:

	Implement disabling unsafe protocols for lock-down mode.
---
 embed/mozilla/EphyContentPolicy.cpp | 118 ++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 embed/mozilla/EphyContentPolicy.cpp

(limited to 'embed/mozilla/EphyContentPolicy.cpp')

diff --git a/embed/mozilla/EphyContentPolicy.cpp b/embed/mozilla/EphyContentPolicy.cpp
new file mode 100644
index 000000000..e84e7d73b
--- /dev/null
+++ b/embed/mozilla/EphyContentPolicy.cpp
@@ -0,0 +1,118 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ *  Copyright (C) 2003 Christian Persch
+ *
+ *  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 2, 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.
+ *
+ *  $Id$
+ */
+
+/* Relevant Mozilla bug numbers:
+ *
+ * The API will change soon:
+ * 	http://bugzilla.mozilla.org/show_bug.cgi?id=191839
+ *	"Content Policy API sucks rock"
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "EphyContentPolicy.h"
+
+#include "eel-gconf-extensions.h"
+#include "ephy-debug.h"
+
+#include <nsCOMPtr.h>
+#include <nsIURI.h>
+#include <nsString.h>
+
+#define CONF_LOCKDOWN_DISABLE_UNSAFE_PROTOCOLS	"/apps/epiphany/lockdown/disable_unsafe_protocols"
+#define CONF_LOCKDOWN_ADDITIONAL_SAFE_PROTOCOLS	"/apps/epiphany/lockdown/additional_safe_protocols"
+
+NS_IMPL_ISUPPORTS1(EphyContentPolicy, nsIContentPolicy)
+
+EphyContentPolicy::EphyContentPolicy()
+{
+	LOG ("EphyContentPolicy constructor")
+
+	mLocked = eel_gconf_get_boolean (CONF_LOCKDOWN_DISABLE_UNSAFE_PROTOCOLS);
+	mSafeProtocols = eel_gconf_get_string_list (CONF_LOCKDOWN_ADDITIONAL_SAFE_PROTOCOLS);
+
+	mSafeProtocols = g_slist_prepend (mSafeProtocols, g_strdup ("https"));
+	mSafeProtocols = g_slist_prepend (mSafeProtocols, g_strdup ("http"));
+}
+
+EphyContentPolicy::~EphyContentPolicy()
+{
+	LOG ("EphyContentPolicy destructor")
+
+	g_slist_foreach (mSafeProtocols, (GFunc) g_free, NULL);
+	g_slist_free (mSafeProtocols);
+}
+
+/* boolean shouldLoad (in PRInt32 contentType, in nsIURI contentLocation, in nsISupports ctxt, in nsIDOMWindow window); */
+NS_IMETHODIMP EphyContentPolicy::ShouldLoad(PRInt32 contentType,
+					    nsIURI *contentLocation,
+					    nsISupports *ctxt,
+					    nsIDOMWindow *window,
+					    PRBool *_retval)
+{
+	if (!mLocked)
+	{
+		LOG ("Not locked!")
+
+		*_retval = PR_TRUE;
+
+		return NS_OK;
+	}
+
+	nsCAutoString scheme;
+	contentLocation->GetScheme (scheme);
+
+	nsCAutoString spec;
+	contentLocation->GetSpec (spec);
+
+	LOG ("ShouldLoad type=%d location=%s (scheme %s)", contentType, spec.get(), scheme.get())
+
+	*_retval = PR_FALSE;
+
+	/* Allow the load if the protocol is in safe list, or it's about:blank */
+	if (g_slist_find_custom (mSafeProtocols, scheme.get(), (GCompareFunc) strcmp)
+	    || spec.Equals ("about:blank"))
+	{
+		*_retval = PR_TRUE;
+	}
+
+	LOG ("Decision: %sallowing load", *_retval == PR_TRUE ? "" : "NOT ")
+
+	return NS_OK;
+}
+
+/* boolean shouldProcess (in PRInt32 contentType, in nsIURI documentLocation, in nsISupports ctxt, in nsIDOMWindow window); */
+NS_IMETHODIMP EphyContentPolicy::ShouldProcess(PRInt32 contentType,
+					       nsIURI *documentLocation,
+					       nsISupports *ctxt,
+					       nsIDOMWindow *window,
+					       PRBool *_retval)
+{
+	/* As far as I can tell from reading mozilla code, this is never called. */
+
+	LOG ("ShouldProcess: this is quite unexpected!")
+
+	*_retval = PR_TRUE;
+
+	return NS_OK;
+}
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