Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 162 insertions, 0 deletions

diff --git a/lib/json.h b/lib/json.h
new file mode 100644
index 0000000..78c3836
--- /dev/null
+++ b/lib/json.h
@@ -0,0 +1,162 @@
+/* json-c wrapper
+ * Copyright (C) 2015 Cumulus Networks, Inc.
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _QUAGGA_JSON_H
+#define _QUAGGA_JSON_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "command.h"
+#include "printfrr.h"
+#include <json-c/json.h>
+
+/*
+ * FRR style JSON iteration.
+ * Usage: JSON_FOREACH(...) { ... }
+ */
+#define JSON_FOREACH(jo, joi, join)                                            \
+	/* struct json_object *jo; */                                          \
+	/* struct json_object_iterator joi; */                                 \
+	/* struct json_object_iterator join; */                                \
+	for ((joi) = json_object_iter_begin((jo)),                             \
+	    (join) = json_object_iter_end((jo));                               \
+	     json_object_iter_equal(&(joi), &(join)) == 0;                     \
+	     json_object_iter_next(&(joi)))
+
+#define JSON_OBJECT_NEW_ARRAY(json_func, fields, n)                            \
+	({                                                                     \
+		struct json_object *_json_array = json_object_new_array();     \
+		for (int _i = 0; _i < (n); _i++)                               \
+			json_object_array_add(_json_array,                     \
+					      (json_func)((fields)[_i]));      \
+		(_json_array);                                                 \
+	})
+
+extern bool use_json(const int argc, struct cmd_token *argv[]);
+extern void json_object_string_add(struct json_object *obj, const char *key,
+				   const char *s);
+extern void json_object_int_add(struct json_object *obj, const char *key,
+				int64_t i);
+void json_object_boolean_add(struct json_object *obj, const char *key,
+			     bool val);
+
+extern void json_object_double_add(struct json_object *obj, const char *key,
+				   double i);
+extern void json_object_boolean_false_add(struct json_object *obj,
+					  const char *key);
+extern void json_object_boolean_true_add(struct json_object *obj,
+					 const char *key);
+extern struct json_object *json_object_lock(struct json_object *obj);
+extern void json_object_free(struct json_object *obj);
+extern void json_array_string_add(json_object *json, const char *str);
+
+/* printfrr => json helpers */
+
+PRINTFRR(3, 0)
+extern void json_object_string_addv(struct json_object *obj, const char *key,
+				    const char *fmt, va_list args);
+PRINTFRR(3, 4)
+static inline void json_object_string_addf(struct json_object *obj,
+					   const char *key, const char *fmt,
+					   ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	json_object_string_addv(obj, key, fmt, args);
+	va_end(args);
+}
+
+PRINTFRR(2, 0)
+extern void json_array_string_addv(json_object *json, const char *fmt,
+				   va_list args);
+PRINTFRR(2, 3)
+static inline void json_array_string_addf(struct json_object *obj,
+					  const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	json_array_string_addv(obj, fmt, args);
+	va_end(args);
+}
+
+PRINTFRR(1, 0)
+extern struct json_object *json_object_new_stringv(const char *fmt,
+						   va_list args);
+PRINTFRR(1, 2)
+static inline struct json_object *json_object_new_stringf(const char *fmt, ...)
+{
+	struct json_object *ret;
+	va_list args;
+
+	va_start(args, fmt);
+	ret = json_object_new_stringv(fmt, args);
+	va_end(args);
+
+	return ret;
+}
+
+/* NOTE: argument order differs! (due to varargs)
+ *   json_object_object_add(parent, key, child)
+ *   json_object_object_addv(parent, child, key, va)
+ *   json_object_object_addf(parent, child, key, ...)
+ * (would be weird to have the child inbetween the format string and args)
+ */
+PRINTFRR(3, 0)
+extern void json_object_object_addv(struct json_object *parent,
+				    struct json_object *child,
+				    const char *keyfmt, va_list args);
+PRINTFRR(3, 4)
+static inline void json_object_object_addf(struct json_object *parent,
+					   struct json_object *child,
+					   const char *keyfmt, ...)
+{
+	va_list args;
+
+	va_start(args, keyfmt);
+	json_object_object_addv(parent, child, keyfmt, args);
+	va_end(args);
+}
+
+#define JSON_STR "JavaScript Object Notation\n"
+
+/* NOTE: json-c lib has following commit 316da85 which
+ * handles escape of forward slash.
+ * This allows prefix  "20.0.14.0\/24":{
+ * to  "20.0.14.0/24":{ some platforms do not have
+ * latest copy of json-c where defining below macro.
+ */
+
+#ifndef JSON_C_TO_STRING_NOSLASHESCAPE
+
+/**
+  * Don't escape forward slashes.
+  */
+#define JSON_C_TO_STRING_NOSLASHESCAPE (1<<4)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _QUAGGA_JSON_H */