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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+#ifndef APU_ERRNO_H
+#define APU_ERRNO_H
+
+/**
+ * @file apu_errno.h
+ * @brief APR-Util Error Codes
+ */
+
+#include "apr.h"
+#include "apr_errno.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup apu_errno Error Codes
+ * @ingroup APR_Util
+ * @{
+ */
+
+/**
+ * @defgroup APR_Util_Error APR_Util Error Values
+ * <PRE>
+ * <b>APU ERROR VALUES</b>
+ * APR_ENOKEY The key provided was empty or NULL
+ * APR_ENOIV The initialisation vector provided was NULL
+ * APR_EKEYTYPE The key type was not recognised
+ * APR_ENOSPACE The buffer supplied was not big enough
+ * APR_ECRYPT An error occurred while encrypting or decrypting
+ * APR_EPADDING Padding was not supported
+ * APR_EKEYLENGTH The key length was incorrect
+ * APR_ENOCIPHER The cipher provided was not recognised
+ * APR_ENODIGEST The digest provided was not recognised
+ * APR_ENOENGINE The engine provided was not recognised
+ * APR_EINITENGINE The engine could not be initialised
+ * APR_EREINIT Underlying crypto has already been initialised
+ * </PRE>
+ *
+ * <PRE>
+ * <b>APR STATUS VALUES</b>
+ * APR_INCHILD Program is currently executing in the child
+ * </PRE>
+ * @{
+ */
+/** @see APR_STATUS_IS_ENOKEY */
+#define APR_ENOKEY (APR_UTIL_START_STATUS + 1)
+/** @see APR_STATUS_IS_ENOIV */
+#define APR_ENOIV (APR_UTIL_START_STATUS + 2)
+/** @see APR_STATUS_IS_EKEYTYPE */
+#define APR_EKEYTYPE (APR_UTIL_START_STATUS + 3)
+/** @see APR_STATUS_IS_ENOSPACE */
+#define APR_ENOSPACE (APR_UTIL_START_STATUS + 4)
+/** @see APR_STATUS_IS_ECRYPT */
+#define APR_ECRYPT (APR_UTIL_START_STATUS + 5)
+/** @see APR_STATUS_IS_EPADDING */
+#define APR_EPADDING (APR_UTIL_START_STATUS + 6)
+/** @see APR_STATUS_IS_EKEYLENGTH */
+#define APR_EKEYLENGTH (APR_UTIL_START_STATUS + 7)
+/** @see APR_STATUS_IS_ENOCIPHER */
+#define APR_ENOCIPHER (APR_UTIL_START_STATUS + 8)
+/** @see APR_STATUS_IS_ENODIGEST */
+#define APR_ENODIGEST (APR_UTIL_START_STATUS + 9)
+/** @see APR_STATUS_IS_ENOENGINE */
+#define APR_ENOENGINE (APR_UTIL_START_STATUS + 10)
+/** @see APR_STATUS_IS_EINITENGINE */
+#define APR_EINITENGINE (APR_UTIL_START_STATUS + 11)
+/** @see APR_STATUS_IS_EREINIT */
+#define APR_EREINIT (APR_UTIL_START_STATUS + 12)
+/** @} */
+
+/**
+ * @defgroup APU_STATUS_IS Status Value Tests
+ * @warning For any particular error condition, more than one of these tests
+ * may match. This is because platform-specific error codes may not
+ * always match the semantics of the POSIX codes these tests (and the
+ * corresponding APR error codes) are named after. A notable example
+ * are the APR_STATUS_IS_ENOENT and APR_STATUS_IS_ENOTDIR tests on
+ * Win32 platforms. The programmer should always be aware of this and
+ * adjust the order of the tests accordingly.
+ * @{
+ */
+
+/** @} */
+
+/**
+ * @addtogroup APR_Util_Error
+ * @{
+ */
+/**
+ * The key was empty or not provided
+ */
+#define APR_STATUS_IS_ENOKEY(s) ((s) == APR_ENOKEY)
+/**
+ * The initialisation vector was not provided
+ */
+#define APR_STATUS_IS_ENOIV(s) ((s) == APR_ENOIV)
+/**
+ * The key type was not recognised
+ */
+#define APR_STATUS_IS_EKEYTYPE(s) ((s) == APR_EKEYTYPE)
+/**
+ * The buffer provided was not big enough
+ */
+#define APR_STATUS_IS_ENOSPACE(s) ((s) == APR_ENOSPACE)
+/**
+ * An error occurred while encrypting or decrypting
+ */
+#define APR_STATUS_IS_ECRYPT(s) ((s) == APR_ECRYPT)
+/**
+ * An error occurred while padding
+ */
+#define APR_STATUS_IS_EPADDING(s) ((s) == APR_EPADDING)
+/**
+ * An error occurred with the key length
+ */
+#define APR_STATUS_IS_EKEYLENGTH(s) ((s) == APR_EKEYLENGTH)
+/**
+ * The cipher provided was not recognised
+ */
+#define APR_STATUS_IS_ENOCIPHER(s) ((s) == APR_ENOCIPHER)
+/**
+ * The digest provided was not recognised
+ */
+#define APR_STATUS_IS_ENODIGEST(s) ((s) == APR_ENODIGEST)
+/**
+ * The engine provided was not recognised
+ */
+#define APR_STATUS_IS_ENOENGINE(s) ((s) == APR_ENOENGINE)
+/**
+ * The engine could not be initialised
+ */
+#define APR_STATUS_IS_EINITENGINE(s) ((s) == APR_EINITENGINE)
+/**
+ * Crypto has already been initialised
+ */
+#define APR_STATUS_IS_EREINIT(s) ((s) == APR_EREINIT)
+/** @} */
+
+/**
+ * This structure allows the underlying API error codes to be returned
+ * along with plain text error messages that explain to us mere mortals
+ * what really happened.
+ */
+typedef struct apu_err_t {
+ const char *reason;
+ const char *msg;
+ int rc;
+} apu_err_t;
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ! APU_ERRNO_H */