--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project. 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. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_ERR_H
+#define OPENSSL_HEADER_ERR_H
+
+#include <stdio.h>
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Error queue handling functions.
+//
+// Errors in OpenSSL are generally signaled by the return value of a function.
+// When a function fails it may add an entry to a per-thread error queue,
+// which is managed by the functions in this header.
+//
+// Each error contains:
+// 1) The library (i.e. ec, pem, rsa) which created it.
+// 2) The file and line number of the call that added the error.
+// 3) A pointer to some error specific data, which may be NULL.
+//
+// The library identifier and reason code are packed in a uint32_t and there
+// exist various functions for unpacking it.
+//
+// The typical behaviour is that an error will occur deep in a call queue and
+// that code will push an error onto the error queue. As the error queue
+// unwinds, other functions will push their own errors. Thus, the "least
+// recent" error is the most specific and the other errors will provide a
+// backtrace of sorts.
+
+
+// Startup and shutdown.
+
+// ERR_load_BIO_strings does nothing.
+//
+// TODO(fork): remove. libjingle calls this.
+OPENSSL_EXPORT void ERR_load_BIO_strings(void);
+
+// ERR_load_ERR_strings does nothing.
+OPENSSL_EXPORT void ERR_load_ERR_strings(void);
+
+// ERR_load_crypto_strings does nothing.
+OPENSSL_EXPORT void ERR_load_crypto_strings(void);
+
+// ERR_free_strings does nothing.
+OPENSSL_EXPORT void ERR_free_strings(void);
+
+
+// Reading and formatting errors.
+
+// ERR_GET_LIB returns the library code for the error. This is one of
+// the |ERR_LIB_*| values.
+#define ERR_GET_LIB(packed_error) ((int)(((packed_error) >> 24) & 0xff))
+
+// ERR_GET_REASON returns the reason code for the error. This is one of
+// library-specific |LIB_R_*| values where |LIB| is the library (see
+// |ERR_GET_LIB|). Note that reason codes are specific to the library.
+#define ERR_GET_REASON(packed_error) ((int)((packed_error) & 0xfff))
+
+// ERR_get_error gets the packed error code for the least recent error and
+// removes that error from the queue. If there are no errors in the queue then
+// it returns zero.
+OPENSSL_EXPORT uint32_t ERR_get_error(void);
+
+// ERR_get_error_line acts like |ERR_get_error|, except that the file and line
+// number of the call that added the error are also returned.
+OPENSSL_EXPORT uint32_t ERR_get_error_line(const char **file, int *line);
+
+// ERR_FLAG_STRING means that the |data| member is a NUL-terminated string that
+// can be printed. This is always set if |data| is non-NULL.
+#define ERR_FLAG_STRING 1
+
+// ERR_get_error_line_data acts like |ERR_get_error_line|, but also returns the
+// error-specific data pointer and flags. The flags are a bitwise-OR of
+// |ERR_FLAG_*| values. The error-specific data is owned by the error queue
+// and the pointer becomes invalid after the next call that affects the same
+// thread's error queue. If |*flags| contains |ERR_FLAG_STRING| then |*data| is
+// human-readable.
+OPENSSL_EXPORT uint32_t ERR_get_error_line_data(const char **file, int *line,
+ const char **data, int *flags);
+
+// The "peek" functions act like the |ERR_get_error| functions, above, but they
+// do not remove the error from the queue.
+OPENSSL_EXPORT uint32_t ERR_peek_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_error_line_data(const char **file, int *line,
+ const char **data, int *flags);
+
+// The "peek last" functions act like the "peek" functions, above, except that
+// they return the most recent error.
+OPENSSL_EXPORT uint32_t ERR_peek_last_error(void);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line(const char **file, int *line);
+OPENSSL_EXPORT uint32_t ERR_peek_last_error_line_data(const char **file,
+ int *line,
+ const char **data,
+ int *flags);
+
+// ERR_error_string_n generates a human-readable string representing
+// |packed_error| and places it at |buf|. It writes at most |len| bytes
+// (including the terminating NUL) and truncates the string if necessary. If
+// |len| is greater than zero then |buf| is always NUL terminated.
+//
+// The string will have the following format:
+//
+// error:[error code]:[library name]:OPENSSL_internal:[reason string]
+//
+// error code is an 8 digit hexadecimal number; library name and reason string
+// are ASCII text.
+OPENSSL_EXPORT void ERR_error_string_n(uint32_t packed_error, char *buf,
+ size_t len);
+
+// ERR_lib_error_string returns a string representation of the library that
+// generated |packed_error|.
+OPENSSL_EXPORT const char *ERR_lib_error_string(uint32_t packed_error);
+
+// ERR_reason_error_string returns a string representation of the reason for
+// |packed_error|.
+OPENSSL_EXPORT const char *ERR_reason_error_string(uint32_t packed_error);
+
+// ERR_print_errors_callback_t is the type of a function used by
+// |ERR_print_errors_cb|. It takes a pointer to a human readable string (and
+// its length) that describes an entry in the error queue. The |ctx| argument
+// is an opaque pointer given to |ERR_print_errors_cb|.
+//
+// It should return one on success or zero on error, which will stop the
+// iteration over the error queue.
+typedef int (*ERR_print_errors_callback_t)(const char *str, size_t len,
+ void *ctx);
+
+// ERR_print_errors_cb clears the current thread's error queue, calling
+// |callback| with a string representation of each error, from the least recent
+// to the most recent error.
+//
+// The string will have the following format (which differs from
+// |ERR_error_string|):
+//
+// [thread id]:error:[error code]:[library name]:OPENSSL_internal:[reason string]:[file]:[line number]:[optional string data]
+//
+// The callback can return one to continue the iteration or zero to stop it.
+// The |ctx| argument is an opaque value that is passed through to the
+// callback.
+OPENSSL_EXPORT void ERR_print_errors_cb(ERR_print_errors_callback_t callback,
+ void *ctx);
+
+// ERR_print_errors_fp clears the current thread's error queue, printing each
+// error to |file|. See |ERR_print_errors_cb| for the format.
+OPENSSL_EXPORT void ERR_print_errors_fp(FILE *file);
+
+
+// Clearing errors.
+
+// ERR_clear_error clears the error queue for the current thread.
+OPENSSL_EXPORT void ERR_clear_error(void);
+
+// ERR_set_mark "marks" the most recent error for use with |ERR_pop_to_mark|.
+// It returns one if an error was marked and zero if there are no errors.
+OPENSSL_EXPORT int ERR_set_mark(void);
+
+// ERR_pop_to_mark removes errors from the most recent to the least recent
+// until (and not including) a "marked" error. It returns zero if no marked
+// error was found (and thus all errors were removed) and one otherwise. Errors
+// are marked using |ERR_set_mark|.
+OPENSSL_EXPORT int ERR_pop_to_mark(void);
+
+
+// Custom errors.
+
+// ERR_get_next_error_library returns a value suitable for passing as the
+// |library| argument to |ERR_put_error|. This is intended for code that wishes
+// to push its own, non-standard errors to the error queue.
+OPENSSL_EXPORT int ERR_get_next_error_library(void);
+
+
+// Built-in library and reason codes.
+
+// The following values are built-in library codes.
+enum {
+ ERR_LIB_NONE = 1,
+ ERR_LIB_SYS,
+ ERR_LIB_BN,
+ ERR_LIB_RSA,
+ ERR_LIB_DH,
+ ERR_LIB_EVP,
+ ERR_LIB_BUF,
+ ERR_LIB_OBJ,
+ ERR_LIB_PEM,
+ ERR_LIB_DSA,
+ ERR_LIB_X509,
+ ERR_LIB_ASN1,
+ ERR_LIB_CONF,
+ ERR_LIB_CRYPTO,
+ ERR_LIB_EC,
+ ERR_LIB_SSL,
+ ERR_LIB_BIO,
+ ERR_LIB_PKCS7,
+ ERR_LIB_PKCS8,
+ ERR_LIB_X509V3,
+ ERR_LIB_RAND,
+ ERR_LIB_ENGINE,
+ ERR_LIB_OCSP,
+ ERR_LIB_UI,
+ ERR_LIB_COMP,
+ ERR_LIB_ECDSA,
+ ERR_LIB_ECDH,
+ ERR_LIB_HMAC,
+ ERR_LIB_DIGEST,
+ ERR_LIB_CIPHER,
+ ERR_LIB_HKDF,
+ ERR_LIB_USER,
+ ERR_NUM_LIBS
+};
+
+// The following reason codes used to denote an error occuring in another
+// library. They are sometimes used for a stack trace.
+#define ERR_R_SYS_LIB ERR_LIB_SYS
+#define ERR_R_BN_LIB ERR_LIB_BN
+#define ERR_R_RSA_LIB ERR_LIB_RSA
+#define ERR_R_DH_LIB ERR_LIB_DH
+#define ERR_R_EVP_LIB ERR_LIB_EVP
+#define ERR_R_BUF_LIB ERR_LIB_BUF
+#define ERR_R_OBJ_LIB ERR_LIB_OBJ
+#define ERR_R_PEM_LIB ERR_LIB_PEM
+#define ERR_R_DSA_LIB ERR_LIB_DSA
+#define ERR_R_X509_LIB ERR_LIB_X509
+#define ERR_R_ASN1_LIB ERR_LIB_ASN1
+#define ERR_R_CONF_LIB ERR_LIB_CONF
+#define ERR_R_CRYPTO_LIB ERR_LIB_CRYPTO
+#define ERR_R_EC_LIB ERR_LIB_EC
+#define ERR_R_SSL_LIB ERR_LIB_SSL
+#define ERR_R_BIO_LIB ERR_LIB_BIO
+#define ERR_R_PKCS7_LIB ERR_LIB_PKCS7
+#define ERR_R_PKCS8_LIB ERR_LIB_PKCS8
+#define ERR_R_X509V3_LIB ERR_LIB_X509V3
+#define ERR_R_RAND_LIB ERR_LIB_RAND
+#define ERR_R_DSO_LIB ERR_LIB_DSO
+#define ERR_R_ENGINE_LIB ERR_LIB_ENGINE
+#define ERR_R_OCSP_LIB ERR_LIB_OCSP
+#define ERR_R_UI_LIB ERR_LIB_UI
+#define ERR_R_COMP_LIB ERR_LIB_COMP
+#define ERR_R_ECDSA_LIB ERR_LIB_ECDSA
+#define ERR_R_ECDH_LIB ERR_LIB_ECDH
+#define ERR_R_STORE_LIB ERR_LIB_STORE
+#define ERR_R_FIPS_LIB ERR_LIB_FIPS
+#define ERR_R_CMS_LIB ERR_LIB_CMS
+#define ERR_R_TS_LIB ERR_LIB_TS
+#define ERR_R_HMAC_LIB ERR_LIB_HMAC
+#define ERR_R_JPAKE_LIB ERR_LIB_JPAKE
+#define ERR_R_USER_LIB ERR_LIB_USER
+#define ERR_R_DIGEST_LIB ERR_LIB_DIGEST
+#define ERR_R_CIPHER_LIB ERR_LIB_CIPHER
+#define ERR_R_HKDF_LIB ERR_LIB_HKDF
+
+// The following values are global reason codes. They may occur in any library.
+#define ERR_R_FATAL 64
+#define ERR_R_MALLOC_FAILURE (1 | ERR_R_FATAL)
+#define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED (2 | ERR_R_FATAL)
+#define ERR_R_PASSED_NULL_PARAMETER (3 | ERR_R_FATAL)
+#define ERR_R_INTERNAL_ERROR (4 | ERR_R_FATAL)
+#define ERR_R_OVERFLOW (5 | ERR_R_FATAL)
+
+
+// Deprecated functions.
+
+// ERR_remove_state calls |ERR_clear_error|.
+OPENSSL_EXPORT void ERR_remove_state(unsigned long pid);
+
+// ERR_remove_thread_state clears the error queue for the current thread if
+// |tid| is NULL. Otherwise it calls |assert(0)|, because it's no longer
+// possible to delete the error queue for other threads.
+//
+// Use |ERR_clear_error| instead. Note error queues are deleted automatically on
+// thread exit. You do not need to call this function to release memory.
+OPENSSL_EXPORT void ERR_remove_thread_state(const CRYPTO_THREADID *tid);
+
+// ERR_func_error_string returns the string "OPENSSL_internal".
+OPENSSL_EXPORT const char *ERR_func_error_string(uint32_t packed_error);
+
+// ERR_error_string behaves like |ERR_error_string_n| but |len| is implicitly
+// |ERR_ERROR_STRING_BUF_LEN| and it returns |buf|. If |buf| is NULL, the error
+// string is placed in a static buffer which is returned. (The static buffer may
+// be overridden by concurrent calls in other threads so this form should not be
+// used.)
+//
+// Use |ERR_error_string_n| instead.
+//
+// TODO(fork): remove this function.
+OPENSSL_EXPORT char *ERR_error_string(uint32_t packed_error, char *buf);
+#define ERR_ERROR_STRING_BUF_LEN 120
+
+// ERR_GET_FUNC returns zero. BoringSSL errors do not report a function code.
+#define ERR_GET_FUNC(packed_error) 0
+
+// ERR_TXT_STRING is provided for compatibility with code that assumes that
+// it's using OpenSSL.
+#define ERR_TXT_STRING ERR_FLAG_STRING
+
+
+// Private functions.
+
+// ERR_clear_system_error clears the system's error value (i.e. errno).
+OPENSSL_EXPORT void ERR_clear_system_error(void);
+
+// OPENSSL_PUT_ERROR is used by OpenSSL code to add an error to the error
+// queue.
+#define OPENSSL_PUT_ERROR(library, reason) \
+ ERR_put_error(ERR_LIB_##library, 0, reason, __FILE__, __LINE__)
+
+// OPENSSL_PUT_SYSTEM_ERROR is used by OpenSSL code to add an error from the
+// operating system to the error queue.
+// TODO(fork): include errno.
+#define OPENSSL_PUT_SYSTEM_ERROR() \
+ ERR_put_error(ERR_LIB_SYS, 0, 0, __FILE__, __LINE__);
+
+// ERR_put_error adds an error to the error queue, dropping the least recent
+// error if necessary for space reasons.
+OPENSSL_EXPORT void ERR_put_error(int library, int unused, int reason,
+ const char *file, unsigned line);
+
+// ERR_add_error_data takes a variable number (|count|) of const char*
+// pointers, concatenates them and sets the result as the data on the most
+// recent error.
+OPENSSL_EXPORT void ERR_add_error_data(unsigned count, ...);
+
+// ERR_add_error_dataf takes a printf-style format and arguments, and sets the
+// result as the data on the most recent error.
+OPENSSL_EXPORT void ERR_add_error_dataf(const char *format, ...)
+ OPENSSL_PRINTF_FORMAT_FUNC(1, 2);
+
+// ERR_NUM_ERRORS is one more than the limit of the number of errors in the
+// queue.
+#define ERR_NUM_ERRORS 16
+
+#define ERR_PACK(lib, reason) \
+ (((((uint32_t)(lib)) & 0xff) << 24) | ((((uint32_t)(reason)) & 0xfff)))
+
+// OPENSSL_DECLARE_ERROR_REASON is used by util/make_errors.h (which generates
+// the error defines) to recognise that an additional reason value is needed.
+// This is needed when the reason value is used outside of an
+// |OPENSSL_PUT_ERROR| macro. The resulting define will be
+// ${lib}_R_${reason}.
+#define OPENSSL_DECLARE_ERROR_REASON(lib, reason)
+
+
+#if defined(__cplusplus)
+} // extern C
+#endif
+
+#endif // OPENSSL_HEADER_ERR_H
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