fuzz: Added IDNA encoding/decoding fuzzying units

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>

12 files changed, 138 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index 97a353b514..6ce7207157 100644
--- a/.gitignore
+++ b/.gitignore
@@ -205,6 +205,7 @@ doc/tpm-api.texi
 doc/version-guile.texi
 doc/version.texi
 doc/x509-api.texi
+devel/fuzz/gnutls_*_fuzzer
 extra/Makefile
 extra/Makefile.in
 extra/includes/Makefile
diff --git a/devel/fuzz/Makefile b/devel/fuzz/Makefile
index fc9d95c55c..8e83dd12a8 100644
--- a/devel/fuzz/Makefile
+++ b/devel/fuzz/Makefile
@@ -48,7 +48,14 @@ gnutls_server_fuzzer: gnutls_server_fuzzer.cc
 gnutls_x509_parser_fuzzer: gnutls_x509_parser_fuzzer.cc
 	$(CC) $(CFLAGS) main.c $^ $(COMMON) -o $@
 
+gnutls_idna_parser_fuzzer: gnutls_idna_parser_fuzzer.cc
+	$(CC) $(CFLAGS) main.c $^ $(COMMON) -o $@
+
+gnutls_reverse_idna_parser_fuzzer: gnutls_reverse_idna_parser_fuzzer.cc
+	$(CC) $(CFLAGS) main.c $^ $(COMMON) -o $@
+
 clean:
 	rm -f gnutls_pkcs7_parser_fuzzer gnutls_client_fuzzer gnutls_dn_parser_fuzzer \
 	gnutls_openpgp_cert_parser_fuzzer gnutls_pkcs7_parser_fuzzer gnutls_pkcs8_key_parser_fuzzer \
-	gnutls_private_key_parser_fuzzer gnutls_server_fuzzer gnutls_x509_parser_fuzzer
+	gnutls_private_key_parser_fuzzer gnutls_server_fuzzer gnutls_x509_parser_fuzzer \
+	gnutls_idna_parser_fuzzer gnutls_reverse_idna_parser_fuzzer
diff --git a/devel/fuzz/gnutls_idna_parser.in/dns1 b/devel/fuzz/gnutls_idna_parser.in/dns1
new file mode 100644
index 0000000000..13ce7f21d1
--- /dev/null
+++ b/devel/fuzz/gnutls_idna_parser.in/dns1
@@ -0,0 +1 @@
+LOCALHOST
diff --git a/devel/fuzz/gnutls_idna_parser.in/dns2 b/devel/fuzz/gnutls_idna_parser.in/dns2
new file mode 100644
index 0000000000..7fed584a6e
--- /dev/null
+++ b/devel/fuzz/gnutls_idna_parser.in/dns2
@@ -0,0 +1 @@
+bücher.de
diff --git a/devel/fuzz/gnutls_idna_parser.in/dns3 b/devel/fuzz/gnutls_idna_parser.in/dns3
new file mode 100644
index 0000000000..30babe3601
--- /dev/null
+++ b/devel/fuzz/gnutls_idna_parser.in/dns3
@@ -0,0 +1 @@
+日本語.jp
diff --git a/devel/fuzz/gnutls_idna_parser.in/dns4 b/devel/fuzz/gnutls_idna_parser.in/dns4
new file mode 100644
index 0000000000..c08920141f
--- /dev/null
+++ b/devel/fuzz/gnutls_idna_parser.in/dns4
@@ -0,0 +1 @@
+简体中文.εξτρα.com
diff --git a/devel/fuzz/gnutls_idna_parser_fuzzer.cc b/devel/fuzz/gnutls_idna_parser_fuzzer.cc
new file mode 100644
index 0000000000..06e89b8a36
--- /dev/null
+++ b/devel/fuzz/gnutls_idna_parser_fuzzer.cc
@@ -0,0 +1,39 @@
+/*
+# Copyright 2016 Nikos Mavrogiannopoulos
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+*/
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include <gnutls/gnutls.h>
+
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    gnutls_datum_t out;
+    int ret;
+
+    ret = gnutls_idna_map((const char*)data, size, &out, 0);
+    if (ret < 0)
+        goto cleanup;
+
+    printf("%s\n", (char*)out.data);
+    gnutls_free(out.data);
+
+ cleanup:
+    return 0;
+}
diff --git a/devel/fuzz/gnutls_reverse_idna_parser.in/ace1 b/devel/fuzz/gnutls_reverse_idna_parser.in/ace1
new file mode 100644
index 0000000000..64b6119730
--- /dev/null
+++ b/devel/fuzz/gnutls_reverse_idna_parser.in/ace1
@@ -0,0 +1 @@
+xn--fa-hia.de
diff --git a/devel/fuzz/gnutls_reverse_idna_parser.in/ace2 b/devel/fuzz/gnutls_reverse_idna_parser.in/ace2
new file mode 100644
index 0000000000..a42c184210
--- /dev/null
+++ b/devel/fuzz/gnutls_reverse_idna_parser.in/ace2
@@ -0,0 +1 @@
+xn--fiqu1az03c18t.xn--mxah1amo.com
diff --git a/devel/fuzz/gnutls_reverse_idna_parser.in/ace3 b/devel/fuzz/gnutls_reverse_idna_parser.in/ace3
new file mode 100644
index 0000000000..13ce7f21d1
--- /dev/null
+++ b/devel/fuzz/gnutls_reverse_idna_parser.in/ace3
@@ -0,0 +1 @@
+LOCALHOST
diff --git a/devel/fuzz/gnutls_reverse_idna_parser_fuzzer.cc b/devel/fuzz/gnutls_reverse_idna_parser_fuzzer.cc
new file mode 100644
index 0000000000..1b0a398e02
--- /dev/null
+++ b/devel/fuzz/gnutls_reverse_idna_parser_fuzzer.cc
@@ -0,0 +1,39 @@
+/*
+# Copyright 2016 Nikos Mavrogiannopoulos
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+*/
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdint.h>
+
+#include <gnutls/gnutls.h>
+
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    gnutls_datum_t out;
+    int ret;
+
+    ret = gnutls_idna_reverse_map((char*)data, size, &out, 0);
+    if (ret < 0)
+        goto cleanup;
+
+    printf("%s\n", (char*)out.data);
+    gnutls_free(out.data);
+
+ cleanup:
+    return 0;
+}
diff --git a/devel/fuzz/main.c b/devel/fuzz/main.c
new file mode 100644
index 0000000000..602943014c
--- /dev/null
+++ b/devel/fuzz/main.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2017 Nikos Mavrogiannopoulos
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+int main(int argc, char **argv)
+{
+	int ret;
+	unsigned char buf[64*1024];
+
+	ret = fread(buf, 1, sizeof(buf), stdin);
+	if (ret <= 0)
+		return 0;
+
+	return LLVMFuzzerTestOneInput(buf, ret);
+}