From 51bb1b6a708971e74833b2efff14f399e307c697 Mon Sep 17 00:00:00 2001
From: rbuj <robert.buj@gmail.com>
Date: Tue, 17 Mar 2020 20:23:08 +0100
Subject: Filter-out img elements from notification body

---
 src/themes/standard/Makefile.am |  4 +--
 src/themes/standard/theme.c     | 59 +++++++++++++++++++++++++++++++++++++----
 2 files changed, 56 insertions(+), 7 deletions(-)

(limited to 'src/themes/standard')

diff --git a/src/themes/standard/Makefile.am b/src/themes/standard/Makefile.am
index 7f82f54..42476a4 100644
--- a/src/themes/standard/Makefile.am
+++ b/src/themes/standard/Makefile.am
@@ -5,8 +5,8 @@ engine_LTLIBRARIES = libstandard.la
 libstandard_la_SOURCES = theme.c
 libstandard_la_CFLAGS = $(WARN_CFLAGS)
 libstandard_la_LDFLAGS = -module -avoid-version -no-undefined
-libstandard_la_LIBADD  = $(NOTIFICATION_DAEMON_LIBS)
+libstandard_la_LIBADD  = $(NOTIFICATION_DAEMON_LIBS) $(THEME_LIBS)
 
-AM_CPPFLAGS = $(NOTIFICATION_DAEMON_CFLAGS)
+AM_CPPFLAGS = $(NOTIFICATION_DAEMON_CFLAGS) $(THEME_CFLAGS)
 
 -include $(top_srcdir)/git.mk
diff --git a/src/themes/standard/theme.c b/src/themes/standard/theme.c
index c81ac34..4ab72de 100644
--- a/src/themes/standard/theme.c
+++ b/src/themes/standard/theme.c
@@ -24,6 +24,8 @@
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
+#include <libxml/xpath.h>
+
 typedef void (*ActionInvokedCb) (GtkWindow* nw, const char* key);
 typedef void (*UrlClickedCb) (GtkWindow* nw, const char* url);
 
@@ -844,7 +846,6 @@ void set_notification_text(GtkWindow* nw, const char* summary, const char* body)
 {
 	char* str;
 	char* quoted;
-	const char *body_label_text;
 	GtkRequisition req;
 	WindowData* windata;
 
@@ -858,10 +859,58 @@ void set_notification_text(GtkWindow* nw, const char* summary, const char* body)
 	gtk_label_set_markup(GTK_LABEL(windata->summary_label), str);
 	g_free(str);
 
-	gtk_label_set_markup (GTK_LABEL (windata->body_label), body);
-	body_label_text = gtk_label_get_text (GTK_LABEL (windata->body_label));
-	if ((body_label_text == NULL) || (strlen (body_label_text) == 0))
-		gtk_label_set_text (GTK_LABEL (windata->body_label), body);
+	/* body */
+	xmlDocPtr doc;
+	xmlInitParser();
+	str = g_strconcat ("<markup>", body, "</markup>", NULL);
+	/* parse notification body */
+	doc = xmlReadMemory(str, strlen (str), "noname.xml", NULL, 0);
+	g_free (str);
+	if (doc != NULL) {
+		xmlXPathContextPtr xpathCtx;
+		xmlXPathObjectPtr  xpathObj;
+		xmlNodeSetPtr      nodes;
+		const char        *body_label_text;
+		int i, size;
+
+		/* filterout img nodes */
+		xpathCtx = xmlXPathNewContext(doc);
+		xpathObj = xmlXPathEvalExpression((unsigned char *)"//img", xpathCtx);
+		nodes = xpathObj->nodesetval;
+		size = (nodes) ? nodes->nodeNr : 0;
+		for(i = size - 1; i >= 0; i--) {
+			xmlUnlinkNode (nodes->nodeTab[i]);
+			xmlFreeNode (nodes->nodeTab[i]);
+		}
+
+		/* write doc to string */
+		xmlBufferPtr buf = xmlBufferCreate();
+		(void) xmlNodeDump(buf, doc, xmlDocGetRootElement (doc), 0, 0);
+		str = (char *)buf->content;
+		gtk_label_set_markup (GTK_LABEL (windata->body_label), str);
+
+		/* cleanup */
+		xmlBufferFree (buf);
+		xmlXPathFreeObject (xpathObj);
+		xmlXPathFreeContext (xpathCtx);
+		xmlFreeDoc (doc);
+
+		/* Does it render properly? */
+		body_label_text = gtk_label_get_text (GTK_LABEL (windata->body_label));
+		if ((body_label_text == NULL) || (strlen (body_label_text) == 0)) {
+			goto render_fail;
+		}
+		goto renrer_ok;
+	}
+
+render_fail:
+	/* could not parse notification body */
+	quoted = g_markup_escape_text(body, -1);
+	gtk_label_set_markup (GTK_LABEL (windata->body_label), quoted);
+	g_free (quoted);
+
+renrer_ok:
+	xmlCleanupParser ();
 
 	if (body == NULL || *body == '\0')
 		gtk_widget_hide(windata->body_label);
-- 
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