21 files changed, 4418 insertions, 0 deletions

diff --git a/src/fe-fuzz/Makefile.am b/src/fe-fuzz/Makefile.am
new file mode 100644
index 0000000..3efa83b
--- /dev/null
+++ b/src/fe-fuzz/Makefile.am
@@ -0,0 +1,40 @@
+SUBDIRS = irc fe-common
+
+bin_PROGRAMS = irssi-fuzz server-fuzz
+
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+
+AM_CPPFLAGS = \
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+	$(GLIB_CFLAGS)
+
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+
+irssi_fuzz_LDADD = \
+	@COMMON_LIBS@ \
+	@PROG_LIBS@ \
+	$(FUZZER_LIBS)
+
+irssi_fuzz_SOURCES = \
+        irssi.c \
+        null-logger.c \
+	../fe-text/module-formats.c
+
+server_fuzz_DEPENDENCIES = @COMMON_LIBS@
+
+server_fuzz_LDADD = \
+	@COMMON_LIBS@ \
+	@PROG_LIBS@ \
+	$(FUZZER_LIBS)
+
+server_fuzz_SOURCES = \
+	server.c \
+        null-logger.c \
+	../fe-text/module-formats.c
+
+noinst_HEADERS = \
+        null-logger.h \
+	../fe-text/module-formats.h
+
+EXTRA_DIST = meson.build
diff --git a/src/fe-fuzz/Makefile.in b/src/fe-fuzz/Makefile.in
new file mode 100644
index 0000000..ffecc35
--- /dev/null
+++ b/src/fe-fuzz/Makefile.in
@@ -0,0 +1,874 @@
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new file mode 100644
index 0000000..8f6ae47
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diff --git a/src/fe-fuzz/fe-common/core/meson.build b/src/fe-fuzz/fe-common/core/meson.build
new file mode 100644
index 0000000..893f593
--- /dev/null
+++ b/src/fe-fuzz/fe-common/core/meson.build
@@ -0,0 +1,23 @@
+# this file is part of irssi
+executable('theme-load-fuzz',
+  files(
+    '../../null-logger.c',
+    'theme-load.c',
+    '../../../fe-text/module-formats.c',
+  ),
+  link_with : [
+    libconfig_a,
+    libcore_a,
+    libfuzzer_fe_common_core_a,
+  ],
+  link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
+  include_directories : rootinc,
+  implicit_include_directories : false,
+  install : true,
+  dependencies : dep
+)
+
+# noinst_headers = files(
+#   '../../../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 0000000..f6db8f5
--- /dev/null
+++ b/src/fe-fuzz/fe-common/core/theme-load.c
@@ -0,0 +1,71 @@
+/*
+ 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 <irssi/src/fe-text/module.h>
+#include <irssi/src/core/modules-load.h>
+#include <irssi/src/core/levels.h>
+#include <irssi/src/fe-text/module-formats.h> // need to explicitly grab from fe-text
+#include <irssi/src/fe-common/core/themes.h>
+#include <irssi/src/core/core.h>
+#include <irssi/src/fe-common/core/fe-common-core.h>
+#include <irssi/src/core/args.h>
+#include <irssi/src/fe-common/core/printtext.h>
+#include <irssi/src/irc/core/irc.h>
+#include <irssi/src/fe-common/core/themes.h>
+#include <irssi/src/fe-fuzz/null-logger.h>
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+	char *irssi_argv[] = { *argv[0], "--home", FHS_PREFIX "/tmp/irssi", NULL };
+	int irssi_argc = sizeof(irssi_argv) / sizeof(char *) - 1;
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	g_log_set_null_logger();
+#endif
+	core_register_options();
+	fe_common_core_register_options();
+	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) {
+	THEME_REC *theme;
+	gchar *copy = g_strndup((const gchar *)data, size);
+
+	FILE *fp = fopen(FHS_PREFIX "/tmp/irssi/fuzz.theme", "wb");
+	if (fp) {
+		fwrite(copy, strlen(copy), 1, fp);
+		fclose(fp);
+	}
+
+	theme = theme_load("fuzz");
+	theme_destroy(theme);
+
+	g_free(copy);
+	return 0;
+}
diff --git a/src/fe-fuzz/fe-common/meson.build b/src/fe-fuzz/fe-common/meson.build
new file mode 100644
index 0000000..da02f2c
--- /dev/null
+++ b/src/fe-fuzz/fe-common/meson.build
@@ -0,0 +1,3 @@
+# this file is part of irssi
+
+subdir('core')
diff --git a/src/fe-fuzz/irc/Makefile.am b/src/fe-fuzz/irc/Makefile.am
new file mode 100644
index 0000000..74f1311
--- /dev/null
+++ b/src/fe-fuzz/irc/Makefile.am
@@ -0,0 +1,3 @@
+SUBDIRS = core
+
+EXTRA_DIST = meson.build
diff --git a/src/fe-fuzz/irc/Makefile.in b/src/fe-fuzz/irc/Makefile.in
new file mode 100644
index 0000000..eedd114
--- /dev/null
+++ b/src/fe-fuzz/irc/Makefile.in
@@ -0,0 +1,671 @@
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+
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+
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new file mode 100644
index 0000000..9221e29
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+$(top_builddir)/src/fe-text/module-formats.$(OBJEXT):  \
+	$(top_builddir)/src/fe-text/$(am__dirstamp) \
+	$(top_builddir)/src/fe-text/$(DEPDIR)/$(am__dirstamp)
+
+event-get-params-fuzz$(EXEEXT): $(event_get_params_fuzz_OBJECTS) $(event_get_params_fuzz_DEPENDENCIES) $(EXTRA_event_get_params_fuzz_DEPENDENCIES) 
+	@rm -f event-get-params-fuzz$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(event_get_params_fuzz_OBJECTS) $(event_get_params_fuzz_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+	-rm -f $(top_builddir)/src/fe-text/*.$(OBJEXT)
+	-rm -f ../../*.$(OBJEXT)
+
+distclean-compile:
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+
+@AMDEP_TRUE@@am__include@ @am__quote@$(top_builddir)/src/fe-text/$(DEPDIR)/module-formats.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@../../$(DEPDIR)/null-logger.Po@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/event-get-params.Po@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
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+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
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+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
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+	list='$(am__tagged_files)'; \
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+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
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+installdirs:
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+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
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+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
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+installcheck: installcheck-am
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+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+	-rm -f ../../$(DEPDIR)/$(am__dirstamp)
+	-rm -f ../../$(am__dirstamp)
+	-test -z "$(top_builddir)/src/fe-text/$(DEPDIR)/$(am__dirstamp)" || rm -f $(top_builddir)/src/fe-text/$(DEPDIR)/$(am__dirstamp)
+	-test -z "$(top_builddir)/src/fe-text/$(am__dirstamp)" || rm -f $(top_builddir)/src/fe-text/$(am__dirstamp)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-binPROGRAMS clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+		-rm -f $(top_builddir)/src/fe-text/$(DEPDIR)/module-formats.Po
+	-rm -f ../../$(DEPDIR)/null-logger.Po
+	-rm -f ./$(DEPDIR)/event-get-params.Po
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
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+		-rm -f $(top_builddir)/src/fe-text/$(DEPDIR)/module-formats.Po
+	-rm -f ../../$(DEPDIR)/null-logger.Po
+	-rm -f ./$(DEPDIR)/event-get-params.Po
+	-rm -f Makefile
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+	mostlyclean-libtool
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+	clean-binPROGRAMS clean-generic clean-libtool cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-binPROGRAMS \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
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+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am uninstall-binPROGRAMS
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/fe-fuzz/irc/core/event-get-params.c b/src/fe-fuzz/irc/core/event-get-params.c
new file mode 100644
index 0000000..3cdb789
--- /dev/null
+++ b/src/fe-fuzz/irc/core/event-get-params.c
@@ -0,0 +1,90 @@
+/*
+ event-get-params.c : irssi
+
+    Copyright (C) 2017 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 <irssi/src/fe-text/module.h>
+#include <irssi/src/core/modules-load.h>
+#include <irssi/src/core/levels.h>
+#include <irssi/src/fe-text/module-formats.h> // need to explicitly grab from fe-text
+#include <irssi/src/fe-common/core/themes.h>
+#include <irssi/src/core/core.h>
+#include <irssi/src/fe-common/core/fe-common-core.h>
+#include <irssi/src/core/args.h>
+#include <irssi/src/fe-common/core/printtext.h>
+#include <irssi/src/irc/core/irc.h>
+#include <irssi/src/fe-fuzz/null-logger.h>
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	g_log_set_null_logger();
+#endif
+	core_register_options();
+	fe_common_core_register_options();
+	/* no args */
+	args_execute(0, NULL);
+	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) {
+	uint8_t count = *data;
+	gchar *copy;
+
+	char *output0;
+	char *output1;
+	char *output2;
+	char *output3;
+	char *params;
+
+	if (size < 1) {
+		return 0;
+	}
+
+	copy = g_strndup((const gchar *)data+1, size-1);
+
+	if (count % 8 == 0) {
+		params = event_get_params(copy, 1 | PARAM_FLAG_GETREST, &output0);
+	} else if (count % 8 == 1) {
+		params = event_get_params(copy, 2 | PARAM_FLAG_GETREST, &output0, &output1);
+	} else if (count % 8 == 2) {
+		params = event_get_params(copy, 3 | PARAM_FLAG_GETREST, &output0, &output1, &output2);
+	} else if (count % 8 == 3) {
+		params = event_get_params(copy, 4 | PARAM_FLAG_GETREST, &output0, &output1, &output2, &output3);
+	} else if (count % 8 == 4) {
+		params = event_get_params(copy, 1, &output0);
+	} else if (count % 8 == 5) {
+		params = event_get_params(copy, 2, &output0, &output1);
+	} else if (count % 8 == 6) {
+		params = event_get_params(copy, 3, &output0, &output1, &output2);
+	} else {
+		params = event_get_params(copy, 4, &output0, &output1, &output2, &output3);
+	}
+	g_free(params);
+	g_free(copy);
+	return 0;
+}
diff --git a/src/fe-fuzz/irc/core/meson.build b/src/fe-fuzz/irc/core/meson.build
new file mode 100644
index 0000000..6a47e07
--- /dev/null
+++ b/src/fe-fuzz/irc/core/meson.build
@@ -0,0 +1,25 @@
+# this file is part of irssi
+
+executable('event-get-params-fuzz',
+  files(
+    '../../null-logger.c',
+    'event-get-params.c',
+    '../../../fe-text/module-formats.c',
+  ),
+  link_with : [
+    libconfig_a,
+    libcore_a,
+    libirc_a,
+    libfuzzer_fe_common_core_a,
+  ],
+  link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
+  include_directories : rootinc,
+  implicit_include_directories : false,
+  install : true,
+  dependencies : dep
+)
+
+# noinst_headers = files(
+#   '../../../fe-text/module-formats.h',
+# )
diff --git a/src/fe-fuzz/irc/meson.build b/src/fe-fuzz/irc/meson.build
new file mode 100644
index 0000000..da02f2c
--- /dev/null
+++ b/src/fe-fuzz/irc/meson.build
@@ -0,0 +1,3 @@
+# this file is part of irssi
+
+subdir('core')
diff --git a/src/fe-fuzz/irssi.c b/src/fe-fuzz/irssi.c
new file mode 100644
index 0000000..6f79223
--- /dev/null
+++ b/src/fe-fuzz/irssi.c
@@ -0,0 +1,61 @@
+/*
+ irssi.c : irssi
+
+    Copyright (C) 2017 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 <irssi/src/fe-text/module.h>
+#include <irssi/src/core/modules-load.h>
+#include <irssi/src/core/levels.h>
+#include <irssi/src/fe-text/module-formats.h> /* need to explicitly grab from fe-text */
+#include <irssi/src/fe-common/core/themes.h>
+#include <irssi/src/core/core.h>
+#include <irssi/src/fe-common/core/fe-common-core.h>
+#include <irssi/src/core/args.h>
+#include <irssi/src/fe-common/core/printtext.h>
+#include <irssi/src/fe-fuzz/null-logger.h>
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	g_log_set_null_logger();
+#endif
+	core_register_options();
+	fe_common_core_register_options();
+	/* no args */
+	args_execute(0, NULL);
+	core_preinit((*argv)[0]);
+	core_init();
+	fe_common_core_init();
+	theme_register(gui_text_formats);
+	module_register("core", "fe-fuzz");
+	printtext_string(NULL, NULL, MSGLEVEL_CLIENTCRAP, "init");
+	return 0;
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+	char *copy = (char *)malloc(sizeof(char)*(size+1));
+	memcpy(copy, data, size);
+	copy[size] = '\0';
+	printtext_string(NULL, NULL, MSGLEVEL_CLIENTCRAP, copy);
+	free(copy);
+	return 0;
+}
diff --git a/src/fe-fuzz/meson.build b/src/fe-fuzz/meson.build
new file mode 100644
index 0000000..7fac025
--- /dev/null
+++ b/src/fe-fuzz/meson.build
@@ -0,0 +1,51 @@
+# this file is part of irssi
+
+subdir('irc')
+subdir('fe-common')
+
+executable('irssi-fuzz',
+  files(
+    'null-logger.c',
+    'irssi.c',
+    '../fe-text/module-formats.c',
+  ),
+  link_with : [
+    libconfig_a,
+    libcore_a,
+    libfuzzer_fe_common_core_a,
+  ],
+  link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
+  include_directories : rootinc,
+  implicit_include_directories : false,
+  install : true,
+  dependencies : dep
+)
+
+executable('server-fuzz',
+  files(
+    'null-logger.c',
+    'server.c',
+    '../fe-text/module-formats.c',
+  ),
+  link_with : [
+    libconfig_a,
+    libcore_a,
+    libfuzzer_fe_common_core_a,
+    libirc_a,
+    libfe_common_irc_a,
+    libfe_irc_dcc_a,
+    libfe_irc_notifylist_a,
+  ],
+  link_args : [fuzzer_lib],
+  link_language : fuzzer_link_language,
+  include_directories : rootinc,
+  implicit_include_directories : false,
+  install : true,
+  dependencies : dep
+)
+
+# noinst_headers = files(
+#   'null-logger.h',
+#   '../fe-text/module-formats.h',
+# )
diff --git a/src/fe-fuzz/null-logger.c b/src/fe-fuzz/null-logger.c
new file mode 100644
index 0000000..dd88b84
--- /dev/null
+++ b/src/fe-fuzz/null-logger.c
@@ -0,0 +1,16 @@
+#include <irssi/src/fe-fuzz/null-logger.h>
+
+#include <glib.h>
+
+static void null_logger(const gchar *log_domain,
+			GLogLevelFlags log_level,
+			const gchar *message,
+			gpointer user_data)
+{
+	return;
+}
+
+void g_log_set_null_logger(void)
+{
+	g_log_set_default_handler(null_logger, NULL);
+}
diff --git a/src/fe-fuzz/null-logger.h b/src/fe-fuzz/null-logger.h
new file mode 100644
index 0000000..d27eeff
--- /dev/null
+++ b/src/fe-fuzz/null-logger.h
@@ -0,0 +1,6 @@
+#ifndef IRSSI_FE_FUZZ_NULL_LOGGER_H
+#define IRSSI_FE_FUZZ_NULL_LOGGER_H
+
+void g_log_set_null_logger(void);
+
+#endif
diff --git a/src/fe-fuzz/server.c b/src/fe-fuzz/server.c
new file mode 100644
index 0000000..b74a29b
--- /dev/null
+++ b/src/fe-fuzz/server.c
@@ -0,0 +1,207 @@
+/*
+ server.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 <irssi/src/irc/core/module.h>
+#include <irssi/src/core/modules-load.h>
+#include <irssi/src/fe-text/module-formats.h>
+#include <irssi/src/core/levels.h>
+#include <irssi/src/fe-common/core/themes.h>
+#include <irssi/src/core/core.h>
+#include <irssi/src/fe-common/core/fe-common-core.h>
+#include <irssi/src/core/args.h>
+#include <irssi/src/fe-common/core/printtext.h>
+#include <irssi/src/core/misc.h>
+#include <irssi/src/core/servers-setup.h>
+#include <irssi/src/core/rawlog.h>
+#include <irssi/src/core/net-sendbuffer.h>
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <irssi/src/irc/core/irc.h>
+#include <irssi/src/irc/core/irc-servers.h>
+#include <irssi/src/irc/core/irc-channels.h>
+#include <irssi/src/fe-fuzz/null-logger.h>
+
+/* irc.c */
+void irc_init(void);
+void irc_deinit(void);
+
+/* irc-session.c */
+void irc_session_init(void);
+void irc_session_deinit(void);
+
+/* fe-common-irc.c */
+void fe_common_irc_init(void);
+void fe_common_irc_deinit(void);
+
+SERVER_REC *server;
+
+void event_connected(IRC_SERVER_REC *server, const char *data, const char *from)
+{
+	char *params, *nick;
+
+	g_return_if_fail(server != NULL);
+
+	params = event_get_params(data, 1, &nick);
+
+	if (g_strcmp0(server->nick, nick) != 0) {
+		/* nick changed unexpectedly .. connected via proxy, etc. */
+		g_free(server->nick);
+		server->nick = g_strdup(nick);
+	}
+
+	/* set the server address */
+	g_free(server->real_address);
+	server->real_address = from == NULL ?
+		g_strdup(server->connrec->address) : /* shouldn't happen.. */
+		g_strdup(from);
+
+	/* last welcome message found - commands can be sent to server now. */
+	server->connected = 1;
+	server->real_connect_time = time(NULL);
+
+	/* let the queue send now that we are identified */
+	g_get_current_time(&server->wait_cmd);
+
+	if (server->connrec->usermode != NULL) {
+		/* Send the user mode, before the autosendcmd.
+		 * Do not pass this through cmd_mode because it
+		 * is not known whether the resulting MODE message
+		 * (if any) is the initial umode or a reply to this.
+		 */
+		irc_send_cmdv(server, "MODE %s %s", server->nick,
+				server->connrec->usermode);
+		g_free_not_null(server->wanted_usermode);
+		server->wanted_usermode = g_strdup(server->connrec->usermode);
+	}
+
+	signal_emit("event connected", 1, server);
+	g_free(params);
+}
+
+void irc_server_init_bare_minimum(IRC_SERVER_REC *server) {
+	server->rawlog = rawlog_create();
+	server->isupport = g_hash_table_new((GHashFunc) i_istr_hash, (GCompareFunc) i_istr_equal);
+
+	/* set the standards */
+	g_hash_table_insert(server->isupport, g_strdup("CHANMODES"), g_strdup("beI,k,l,imnpst"));
+	g_hash_table_insert(server->isupport, g_strdup("PREFIX"), g_strdup("(ohv)@%+"));
+}
+
+void test_server() {
+	//SERVER_REC *server; /* = g_new0(IRC_SERVER_REC, 1); */
+	CHAT_PROTOCOL_REC *proto;
+	SERVER_CONNECT_REC *conn;
+	GIOChannel *handle = g_io_channel_unix_new(open("/dev/null", O_RDWR));
+	g_io_channel_set_encoding(handle, NULL, NULL);
+	g_io_channel_set_close_on_unref(handle, TRUE);
+
+	proto = chat_protocol_find("IRC");
+	conn = server_create_conn(proto->id, "localhost", 0, "", "", "user");
+	server = proto->server_init_connect(conn);
+	server->session_reconnect = TRUE;
+	g_free(server->tag);
+	server->tag = g_strdup("testserver");
+	server->handle = net_sendbuffer_create(handle, 0);
+
+	/* we skip some initialisations that would try to send data */
+	/* irc_servers_deinit(); */
+	irc_session_deinit();
+	irc_irc_deinit();
+
+	server_connect_finished(server);
+
+	/* make up for the skipped session init */
+	irc_server_init_bare_minimum(IRC_SERVER(server));
+
+	irc_irc_init();
+	irc_session_init();
+	/* irc_servers_init(); */
+
+	server_connect_unref(conn);
+}
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	g_log_set_null_logger();
+#endif
+	core_register_options();
+	fe_common_core_register_options();
+	/* no args */
+	args_execute(0, NULL);
+	core_preinit((*argv)[0]);
+	core_init();
+	irssi_ssl_init();
+	irc_init();
+	fe_common_core_init();
+	fe_common_irc_init();
+	signal_add("event 001", (SIGNAL_FUNC) event_connected);
+	module_register("core", "fe-fuzz");
+	rawlog_set_size(1);
+	return 0;
+}
+
+int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+	gboolean prefixedChoice = (gboolean)*data;
+	gchar *copy;
+	gchar **lines;
+	gchar **head;
+
+	if (size < 1) return 0;
+
+	test_server();
+
+	copy = g_strndup((const gchar *)data+1, size-1);
+	lines = g_strsplit(copy, "\r\n", -1);
+	head = lines;
+
+	for (; *lines != NULL; lines++) {
+		gchar *prefixedLine;
+		int disconnected;
+		if (prefixedChoice) {
+			prefixedLine = g_strdup_printf(":user %s\n", *lines);
+		} else {
+			prefixedLine = g_strdup_printf("%s\n", *lines);
+		}
+		server_ref(server);
+		signal_emit("server incoming", 2, server, prefixedLine);
+		disconnected = server->disconnected;
+		/*
+		if (disconnected) {
+		        server_connect_unref(server->connrec);
+		}
+		*/
+		server_unref(server);
+		if (disconnected) {
+			/* reconnect */
+			test_server();
+		}
+		g_free(prefixedLine);
+	}
+
+	g_strfreev(head);
+	g_free(copy);
+	server_disconnect(server);
+	return 0;
+}