Merge pull request #100 from painless-security/milestone/monitoring

[trust_router.git] / include / tr_json_util.h

diff --git a/include/tr_json_util.h b/include/tr_json_util.h
new file mode 100644 (file)
index 0000000..3573a88
--- /dev/null
+++ b/include/tr_json_util.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2018, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+/* Utilities for working with JSON/jansson */
+
+#ifndef TRUST_ROUTER_TR_JSON_UTIL_H
+#define TRUST_ROUTER_TR_JSON_UTIL_H
+
+/**
+ * @def OBJECT_SET_OR_FAIL(job, key, val)
+ * Add a key/value pair to an object or jump to the cleanup label
+ * if the value is null.
+ *
+ * @param jobj JSON object instance to receive the key/value pair
+ * @param key key to set
+ * @param val value to set
+ */
+#define OBJECT_SET_OR_FAIL(jobj, key, val)     \
+do {                                           \
+  if (val)                                     \
+    json_object_set_new((jobj),(key),(val));   \
+  else                                         \
+    goto cleanup;                              \
+} while (0)
+
+/**
+ * @def OBJECT_SET_OR_SKIP(job, key, val)
+ * Add a key/value pair to an object only if it is non-null.
+ *
+ * @param jobj JSON object instance to receive the key/value pair
+ * @param key key to set
+ * @param val value to set
+ */
+#define OBJECT_SET_OR_SKIP(jobj, key, val)     \
+do {                                           \
+  if (val)                                     \
+    json_object_set_new((jobj),(key),(val));   \
+} while (0)
+
+
+/**
+ * @def ARRAY_APPEND_OR_FAIL(job, key, val)
+ * Append a value to an array or jump to the cleanup label
+ * if the value is null.
+ *
+ * @param jobj JSON array instance to receive the value
+ * @param val value to set
+ */
+#define ARRAY_APPEND_OR_FAIL(jary, val)        \
+do {                                           \
+  if (val)                                     \
+    json_array_append_new((jary),(val));       \
+  else                                         \
+    goto cleanup;                              \
+} while (0)
+
+
+#endif //TRUST_ROUTER_TR_JSON_UTIL_H