1 files changed, 91 insertions, 0 deletions
diff --git a/fluent-bit/tests/internal/env.c b/fluent-bit/tests/internal/env.c
new file mode 100644
index 00000000..c0a72f0a
--- /dev/null
+++ b/fluent-bit/tests/internal/env.c
@@ -0,0 +1,91 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2019-2022 The Fluent Bit Authors
+ *  Copyright (C) 2015-2018 Treasure Data Inc.
+ *
+ *  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 <fluent-bit.h>
+#include <fluent-bit/flb_env.h>
+#include <fluent-bit/flb_sds.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "flb_tests_internal.h"
+
+/* https://github.com/fluent/fluent-bit/issues/6313 */
+void test_translate_long_env()
+{
+    struct flb_env *env;
+    flb_sds_t buf = NULL;
+    char *long_env = "ABC_APPLICATION_TEST_TEST_ABC_FLUENT_BIT_SECRET_FLUENTD_HTTP_HOST";
+    char long_env_ra[4096] = {0};
+    char *env_val = "aaaaa";
+    char putenv_arg[4096] = {0};
+    size_t ret_size;
+    int ret;
+
+    ret_size = snprintf(&long_env_ra[0], sizeof(long_env_ra), "${%s}", long_env);
+    if (!TEST_CHECK(ret_size < sizeof(long_env_ra))) {
+        TEST_MSG("long_env_ra size error");
+        exit(1);
+    }
+    ret_size = snprintf(&putenv_arg[0], sizeof(putenv_arg), "%s=%s", long_env, env_val);
+    if (!TEST_CHECK(ret_size < sizeof(long_env_ra))) {
+        TEST_MSG("putenv_arg size error");
+        exit(1);
+    }
+
+    env = flb_env_create();
+    if (!TEST_CHECK(env != NULL)) {
+        TEST_MSG("flb_env_create failed");
+        exit(1);
+    }
+#ifndef FLB_SYSTEM_WINDOWS
+    ret = putenv(&putenv_arg[0]);
+#else
+    ret = _putenv(&putenv_arg[0]);
+#endif
+    if (!TEST_CHECK(ret == 0)) {
+        TEST_MSG("setenv failed");
+        flb_env_destroy(env);
+        exit(1);
+    }
+
+    buf = flb_env_var_translate(env, &long_env_ra[0]);
+    if (!TEST_CHECK(buf != NULL)) {
+        TEST_MSG("flb_env_var_translate failed");
+#ifndef FLB_SYSTEM_WINDOWS
+        unsetenv(long_env);
+#endif
+        flb_env_destroy(env);
+        exit(1);
+    }
+
+    if (!TEST_CHECK(strlen(buf) == strlen(env_val) && 0 == strcmp(buf, env_val))) {
+        TEST_MSG("mismatch. Got=%s expect=%s", buf, env_val);
+    }
+    flb_sds_destroy(buf);
+#ifndef FLB_SYSTEM_WINDOWS
+    unsetenv(long_env);
+#endif
+    flb_env_destroy(env);
+}
+
+
+TEST_LIST = {
+    { "translate_long_env"           , test_translate_long_env},
+    { NULL, NULL }
+};