Milestone 5: deliver embedded RDP sessions and lifecycle hardening

third_party/FreeRDP/winpr/libwinpr/utils/json/json-c.c

@@ -0,0 +1,343 @@
+/**
+ * FreeRDP: A Remote Desktop Protocol Implementation
+ * JSON parser wrapper
+ *
+ * Copyright 2024 Armin Novak <anovak@thincast.com>
+ * Copyright 2024 Thincast Technologies GmbH
+ *
+ * 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 <math.h>
+#include <errno.h>
+
+#include <winpr/file.h>
+#include <winpr/json.h>
+#include <winpr/assert.h>
+
+#if !defined(WITH_JSONC)
+#error "This file must only be compiled when json-c is enabled"
+#endif
+#include <json.h>
+
+#if JSON_C_MAJOR_VERSION == 0
+#if JSON_C_MINOR_VERSION < 14
+static struct json_object* json_object_new_null(void)
+{
+	return nullptr;
+}
+#endif
+#endif
+
+int WINPR_JSON_version(char* buffer, size_t len)
+{
+	return _snprintf(buffer, len, "json-c %s", json_c_version());
+}
+
+WINPR_JSON* WINPR_JSON_Parse(const char* value)
+{
+	return json_tokener_parse(value);
+}
+
+WINPR_JSON* WINPR_JSON_ParseWithLength(const char* value, size_t buffer_length)
+{
+	WINPR_ASSERT(buffer_length <= INT_MAX);
+	json_tokener* tok = json_tokener_new();
+	if (!tok)
+		return nullptr;
+	json_object* obj = json_tokener_parse_ex(tok, value, (int)buffer_length);
+	json_tokener_free(tok);
+	return obj;
+}
+
+void WINPR_JSON_Delete(WINPR_JSON* item)
+{
+	json_object_put((json_object*)item);
+}
+
+WINPR_JSON* WINPR_JSON_GetArrayItem(const WINPR_JSON* array, size_t index)
+{
+	return json_object_array_get_idx((const json_object*)array, index);
+}
+
+size_t WINPR_JSON_GetArraySize(const WINPR_JSON* array)
+{
+	return json_object_array_length((const json_object*)array);
+}
+
+WINPR_JSON* WINPR_JSON_GetObjectItem(const WINPR_JSON* object, const char* string)
+{
+	struct json_object_iterator it = json_object_iter_begin((const json_object*)object);
+	struct json_object_iterator itEnd = json_object_iter_end((const json_object*)object);
+	while (!json_object_iter_equal(&it, &itEnd))
+	{
+		const char* key = json_object_iter_peek_name(&it);
+		if (_stricmp(key, string) == 0)
+		{
+			return json_object_iter_peek_value(&it);
+		}
+		json_object_iter_next(&it);
+	}
+	return nullptr;
+}
+
+WINPR_JSON* WINPR_JSON_GetObjectItemCaseSensitive(const WINPR_JSON* object, const char* string)
+{
+	return json_object_object_get((const json_object*)object, string);
+}
+
+BOOL WINPR_JSON_HasObjectItem(const WINPR_JSON* object, const char* string)
+{
+	return json_object_object_get_ex((const json_object*)object, string, nullptr);
+}
+
+const char* WINPR_JSON_GetErrorPtr(void)
+{
+	return json_util_get_last_err();
+}
+
+const char* WINPR_JSON_GetStringValue(WINPR_JSON* item)
+{
+	return json_object_get_string((json_object*)item);
+}
+
+double WINPR_JSON_GetNumberValue(const WINPR_JSON* item)
+{
+	return json_object_get_double((const json_object*)item);
+}
+
+BOOL WINPR_JSON_IsInvalid(const WINPR_JSON* item)
+{
+	if (WINPR_JSON_IsArray(item))
+		return FALSE;
+	if (WINPR_JSON_IsObject(item))
+		return FALSE;
+	if (WINPR_JSON_IsNull(item))
+		return FALSE;
+	if (WINPR_JSON_IsNumber(item))
+		return FALSE;
+	if (WINPR_JSON_IsBool(item))
+		return FALSE;
+	if (WINPR_JSON_IsString(item))
+		return FALSE;
+	return TRUE;
+}
+
+BOOL WINPR_JSON_IsFalse(const WINPR_JSON* item)
+{
+	if (!json_object_is_type((const json_object*)item, json_type_boolean))
+		return FALSE;
+	json_bool val = json_object_get_boolean((const json_object*)item);
+	return val == 0;
+}
+
+BOOL WINPR_JSON_IsTrue(const WINPR_JSON* item)
+{
+	if (!json_object_is_type((const json_object*)item, json_type_boolean))
+		return FALSE;
+	json_bool val = json_object_get_boolean((const json_object*)item);
+	return val != 0;
+}
+
+BOOL WINPR_JSON_IsBool(const WINPR_JSON* item)
+{
+	return json_object_is_type((const json_object*)item, json_type_boolean);
+}
+
+BOOL WINPR_JSON_IsNull(const WINPR_JSON* item)
+{
+	return json_object_is_type((const json_object*)item, json_type_null);
+}
+
+BOOL WINPR_JSON_IsNumber(const WINPR_JSON* item)
+{
+	return json_object_is_type((const json_object*)item, json_type_int) ||
+	       json_object_is_type((const json_object*)item, json_type_double);
+}
+
+BOOL WINPR_JSON_IsString(const WINPR_JSON* item)
+{
+	return json_object_is_type((const json_object*)item, json_type_string);
+}
+
+BOOL WINPR_JSON_IsArray(const WINPR_JSON* item)
+{
+	return json_object_is_type((const json_object*)item, json_type_array);
+}
+
+BOOL WINPR_JSON_IsObject(const WINPR_JSON* item)
+{
+	return json_object_is_type((const json_object*)item, json_type_object);
+}
+
+WINPR_JSON* WINPR_JSON_CreateNull(void)
+{
+	return json_object_new_null();
+}
+
+WINPR_JSON* WINPR_JSON_CreateTrue(void)
+{
+	return json_object_new_boolean(TRUE);
+}
+
+WINPR_JSON* WINPR_JSON_CreateFalse(void)
+{
+	return json_object_new_boolean(FALSE);
+}
+
+WINPR_JSON* WINPR_JSON_CreateBool(BOOL boolean)
+{
+	return json_object_new_boolean(boolean);
+}
+
+WINPR_JSON* WINPR_JSON_CreateNumber(double num)
+{
+	return json_object_new_double(num);
+}
+
+WINPR_JSON* WINPR_JSON_CreateString(const char* string)
+{
+	return json_object_new_string(string);
+}
+
+WINPR_JSON* WINPR_JSON_CreateArray(void)
+{
+	return json_object_new_array();
+}
+
+WINPR_JSON* WINPR_JSON_CreateObject(void)
+{
+	return json_object_new_object();
+}
+
+WINPR_JSON* WINPR_JSON_AddNullToObject(WINPR_JSON* object, const char* name)
+{
+	struct json_object* obj = json_object_new_null();
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddTrueToObject(WINPR_JSON* object, const char* name)
+{
+	struct json_object* obj = json_object_new_boolean(TRUE);
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddFalseToObject(WINPR_JSON* object, const char* name)
+{
+	struct json_object* obj = json_object_new_boolean(FALSE);
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddBoolToObject(WINPR_JSON* object, const char* name, BOOL boolean)
+{
+	struct json_object* obj = json_object_new_boolean(boolean);
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddNumberToObject(WINPR_JSON* object, const char* name, double number)
+{
+	struct json_object* obj = json_object_new_double(number);
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddIntegerToObject(WINPR_JSON* object, const char* name, int64_t number)
+{
+	struct json_object* obj = json_object_new_int64(number);
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddStringToObject(WINPR_JSON* object, const char* name, const char* string)
+{
+	struct json_object* obj = json_object_new_string(string);
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+WINPR_JSON* WINPR_JSON_AddObjectToObject(WINPR_JSON* object, const char* name)
+{
+	struct json_object* obj = json_object_new_object();
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+BOOL WINPR_JSON_AddItemToArray(WINPR_JSON* array, WINPR_JSON* item)
+{
+	const int rc = json_object_array_add((json_object*)array, (json_object*)item);
+	if (rc != 0)
+		return FALSE;
+	return TRUE;
+}
+
+WINPR_JSON* WINPR_JSON_AddArrayToObject(WINPR_JSON* object, const char* name)
+{
+	struct json_object* obj = json_object_new_array();
+	if (json_object_object_add((json_object*)object, name, obj) != 0)
+	{
+		json_object_put(obj);
+		return nullptr;
+	}
+	return obj;
+}
+
+char* WINPR_JSON_Print(WINPR_JSON* item)
+{
+	const char* str = json_object_to_json_string_ext((json_object*)item, JSON_C_TO_STRING_PRETTY);
+	if (!str)
+		return nullptr;
+	return _strdup(str);
+}
+
+char* WINPR_JSON_PrintUnformatted(WINPR_JSON* item)
+{
+	const char* str = json_object_to_json_string_ext((json_object*)item, JSON_C_TO_STRING_PLAIN);
+	if (!str)
+		return nullptr;
+	return _strdup(str);
+}