3 files changed, 113 insertions, 0 deletions
diff --git a/src/fe-fuzz/fe-common/Makefile.am b/src/fe-fuzz/fe-common/Makefile.am
new file mode 100644
index 00000000..52770885
--- /dev/null
+++ b/src/fe-fuzz/fe-common/Makefile.am
@@ -0,0 +1 @@
+SUBDIRS = core
diff --git a/src/fe-fuzz/fe-common/core/Makefile.am b/src/fe-fuzz/fe-common/core/Makefile.am
new file mode 100644
index 00000000..4fe5937c
--- /dev/null
+++ b/src/fe-fuzz/fe-common/core/Makefile.am
@@ -0,0 +1,46 @@
+bin_PROGRAMS = theme-load-fuzz
+
+# Force link with CXX for libfuzzer support
+CCLD=$(CXX) $(CXXFLAGS)
+
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src \
+	-I$(top_srcdir)/src/core/ \
+	-I$(top_srcdir)/src/irc/core/ \
+	-I$(top_srcdir)/src/fe-common/core/ \
+	$(GLIB_CFLAGS)
+
+AM_DEPENDENCIES = \
+	../../../core/libcore.a \
+	../../../lib-config/libirssi_config.a \
+	../../../irc/libirc.a \
+	../../../irc/core/libirc_core.a \
+	../../../irc/dcc/libirc_dcc.a \
+	../../../irc/flood/libirc_flood.a \
+	../../../irc/notifylist/libirc_notifylist.a \
+	../../../fe-common/core/libfe_common_core.a \
+	../../../fe-common/irc/libfe_common_irc.a \
+	../../../fe-common/irc/dcc/libfe_irc_dcc.a \
+	../../../fe-common/irc/notifylist/libfe_irc_notifylist.a
+
+LDADD = \
+	../../../irc/libirc.a \
+	../../../irc/core/libirc_core.a \
+	../../../irc/dcc/libirc_dcc.a \
+	../../../irc/flood/libirc_flood.a \
+	../../../irc/notifylist/libirc_notifylist.a \
+	../../../fe-common/core/libfe_common_core.a \
+	../../../fe-common/irc/libfe_common_irc.a \
+	../../../fe-common/irc/dcc/libfe_irc_dcc.a \
+	../../../fe-common/irc/notifylist/libfe_irc_notifylist.a \
+	../../../core/libcore.a \
+	../../../lib-config/libirssi_config.a \
+	@PROG_LIBS@ \
+	$(FUZZER_LIBS)
+
+theme_load_fuzz_SOURCES = \
+        theme-load.c \
+	$(top_srcdir)/src/fe-text/module-formats.c
+
+noinst_HEADERS = \
+	$(top_srcdir)/src/fe-text/module-formats.h
diff --git a/src/fe-fuzz/fe-common/core/theme-load.c b/src/fe-fuzz/fe-common/core/theme-load.c
new file mode 100644
index 00000000..14df74c6
--- /dev/null
+++ b/src/fe-fuzz/fe-common/core/theme-load.c
@@ -0,0 +1,66 @@
+/*
+ theme-load.c : irssi
+
+    Copyright (C) 2018 Joseph Bisch
+
+    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 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.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "module.h"
+#include "modules-load.h"
+#include "levels.h"
+#include "../fe-text/module-formats.h" // need to explicitly grab from fe-text
+#include "themes.h"
+#include "core.h"
+#include "fe-common-core.h"
+#include "args.h"
+#include "printtext.h"
+#include "irc.h"
+#include "themes.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+	core_register_options();
+	fe_common_core_register_options();
+	char *irssi_argv[] = {*argv[0], "--home", "/tmp/irssi", NULL};
+	int irssi_argc = sizeof(irssi_argv) / sizeof(char *) - 1;
+	args_execute(irssi_argc, irssi_argv);
+	core_preinit((*argv)[0]);
+	core_init();
+	fe_common_core_init();
+	theme_register(gui_text_formats);
+	module_register("core", "fe-fuzz");
+	return 0;
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+	gchar *copy = g_strndup((const gchar *)data, size);
+
+	FILE *fp = fopen("/tmp/irssi/fuzz.theme", "wb");
+	if (fp) {
+		fwrite(copy, strlen(copy), 1, fp);
+		fclose(fp);
+	}
+
+	THEME_REC *theme = theme_load("fuzz");
+	theme_destroy(theme);
+
+	g_free(copy);
+	return 0;
+}