/*
 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

{-
use OpenSSL::stackhash qw(generate_lhash_macros);
-}

#ifndef OPENSSL_ERR_H
# define OPENSSL_ERR_H
# pragma once

# include <openssl/macros.h>
# ifndef OPENSSL_NO_DEPRECATED_3_0
#  define HEADER_ERR_H
# endif

# include <openssl/e_os2.h>

# ifndef OPENSSL_NO_STDIO
#  include <stdio.h>
#  include <stdlib.h>
# endif

# include <openssl/types.h>
# include <openssl/bio.h>
# include <openssl/lhash.h>

#ifdef  __cplusplus
extern "C" {
#endif

# ifndef OPENSSL_NO_DEPRECATED_3_0
#  ifndef OPENSSL_NO_FILENAMES
#   define ERR_PUT_error(l,f,r,fn,ln)      ERR_put_error(l,f,r,fn,ln)
#  else
#   define ERR_PUT_error(l,f,r,fn,ln)      ERR_put_error(l,f,r,NULL,0)
#  endif
# endif

# include <limits.h>
# include <errno.h>

# define ERR_TXT_MALLOCED        0x01
# define ERR_TXT_STRING          0x02

# if !defined(OPENSSL_NO_DEPRECATED_3_0) || defined(OSSL_FORCE_ERR_STATE)
#  define ERR_FLAG_MARK           0x01
#  define ERR_FLAG_CLEAR          0x02

#  define ERR_NUM_ERRORS  16
struct err_state_st {
    int err_flags[ERR_NUM_ERRORS];
    unsigned long err_buffer[ERR_NUM_ERRORS];
    char *err_data[ERR_NUM_ERRORS];
    size_t err_data_size[ERR_NUM_ERRORS];
    int err_data_flags[ERR_NUM_ERRORS];
    const char *err_file[ERR_NUM_ERRORS];
    int err_line[ERR_NUM_ERRORS];
    const char *err_func[ERR_NUM_ERRORS];
    int top, bottom;
};
# endif

/* library */
# define ERR_LIB_NONE            1
# define ERR_LIB_SYS             2
# define ERR_LIB_BN              3
# define ERR_LIB_RSA             4
# define ERR_LIB_DH              5
# define ERR_LIB_EVP             6
# define ERR_LIB_BUF             7
# define ERR_LIB_OBJ             8
# define ERR_LIB_PEM             9
# define ERR_LIB_DSA             10
# define ERR_LIB_X509            11
/* #define ERR_LIB_METH         12 */
# define ERR_LIB_ASN1            13
# define ERR_LIB_CONF            14
# define ERR_LIB_CRYPTO          15
# define ERR_LIB_EC              16
# define ERR_LIB_SSL             20
/* #define ERR_LIB_SSL23        21 */
/* #define ERR_LIB_SSL2         22 */
/* #define ERR_LIB_SSL3         23 */
/* #define ERR_LIB_RSAREF       30 */
/* #define ERR_LIB_PROXY        31 */
# define ERR_LIB_BIO             32
# define ERR_LIB_PKCS7           33
# define ERR_LIB_X509V3          34
# define ERR_LIB_PKCS12          35
# define ERR_LIB_RAND            36
# define ERR_LIB_DSO             37
# define ERR_LIB_ENGINE          38
# define ERR_LIB_OCSP            39
# define ERR_LIB_UI              40
# define ERR_LIB_COMP            41
# define ERR_LIB_ECDSA           42
# define ERR_LIB_ECDH            43
# define ERR_LIB_OSSL_STORE      44
# define ERR_LIB_FIPS            45
# define ERR_LIB_CMS             46
# define ERR_LIB_TS              47
# define ERR_LIB_HMAC            48
/* # define ERR_LIB_JPAKE       49 */
# define ERR_LIB_CT              50
# define ERR_LIB_ASYNC           51
# define ERR_LIB_KDF             52
# define ERR_LIB_SM2             53
# define ERR_LIB_ESS             54
# define ERR_LIB_PROP            55
# define ERR_LIB_CRMF            56
# define ERR_LIB_PROV            57
# define ERR_LIB_CMP             58
# define ERR_LIB_OSSL_ENCODER    59
# define ERR_LIB_OSSL_DECODER    60
# define ERR_LIB_HTTP            61

# define ERR_LIB_USER            128

# if 1 || !defined(OPENSSL_NO_DEPRECATED_3_0)
#  define ASN1err(f, r) ERR_raise_data(ERR_LIB_ASN1, (r), NULL)
#  define ASYNCerr(f, r) ERR_raise_data(ERR_LIB_ASYNC, (r), NULL)
#  define BIOerr(f, r) ERR_raise_data(ERR_LIB_BIO, (r), NULL)
#  define BNerr(f, r)  ERR_raise_data(ERR_LIB_BN, (r), NULL)
#  define BUFerr(f, r) ERR_raise_data(ERR_LIB_BUF, (r), NULL)
#  define CMPerr(f, r) ERR_raise_data(ERR_LIB_CMP, (r), NULL)
#  define CMSerr(f, r) ERR_raise_data(ERR_LIB_CMS, (r), NULL)
#  define COMPerr(f, r) ERR_raise_data(ERR_LIB_COMP, (r), NULL)
#  define CONFerr(f, r) ERR_raise_data(ERR_LIB_CONF, (r), NULL)
#  define CRMFerr(f, r) ERR_raise_data(ERR_LIB_CRMF, (r), NULL)
#  define CRYPTOerr(f, r) ERR_raise_data(ERR_LIB_CRYPTO, (r), NULL)
#  define CTerr(f, r) ERR_raise_data(ERR_LIB_CT, (r), NULL)
#  define DHerr(f, r)  ERR_raise_data(ERR_LIB_DH, (r), NULL)
#  define DSAerr(f, r) ERR_raise_data(ERR_LIB_DSA, (r), NULL)
#  define DSOerr(f, r) ERR_raise_data(ERR_LIB_DSO, (r), NULL)
#  define ECDHerr(f, r) ERR_raise_data(ERR_LIB_ECDH, (r), NULL)
#  define ECDSAerr(f, r) ERR_raise_data(ERR_LIB_ECDSA, (r), NULL)
#  define ECerr(f, r)  ERR_raise_data(ERR_LIB_EC, (r), NULL)
#  define ENGINEerr(f, r) ERR_raise_data(ERR_LIB_ENGINE, (r), NULL)
#  define ESSerr(f, r) ERR_raise_data(ERR_LIB_ESS, (r), NULL)
#  define EVPerr(f, r) ERR_raise_data(ERR_LIB_EVP, (r), NULL)
#  define FIPSerr(f, r) ERR_raise_data(ERR_LIB_FIPS, (r), NULL)
#  define HMACerr(f, r) ERR_raise_data(ERR_LIB_HMAC, (r), NULL)
#  define HTTPerr(f, r) ERR_raise_data(ERR_LIB_HTTP, (r), NULL)
#  define KDFerr(f, r) ERR_raise_data(ERR_LIB_KDF, (r), NULL)
#  define OBJerr(f, r) ERR_raise_data(ERR_LIB_OBJ, (r), NULL)
#  define OCSPerr(f, r) ERR_raise_data(ERR_LIB_OCSP, (r), NULL)
#  define OSSL_STOREerr(f, r) ERR_raise_data(ERR_LIB_OSSL_STORE, (r), NULL)
#  define PEMerr(f, r) ERR_raise_data(ERR_LIB_PEM, (r), NULL)
#  define PKCS12err(f, r) ERR_raise_data(ERR_LIB_PKCS12, (r), NULL)
#  define PKCS7err(f, r) ERR_raise_data(ERR_LIB_PKCS7, (r), NULL)
#  define PROPerr(f, r) ERR_raise_data(ERR_LIB_PROP, (r), NULL)
#  define PROVerr(f, r) ERR_raise_data(ERR_LIB_PROV, (r), NULL)
#  define RANDerr(f, r) ERR_raise_data(ERR_LIB_RAND, (r), NULL)
#  define RSAerr(f, r) ERR_raise_data(ERR_LIB_RSA, (r), NULL)
#  define KDFerr(f, r) ERR_raise_data(ERR_LIB_KDF, (r), NULL)
#  define SM2err(f, r) ERR_raise_data(ERR_LIB_SM2, (r), NULL)
#  define SSLerr(f, r) ERR_raise_data(ERR_LIB_SSL, (r), NULL)
#  define SYSerr(f, r) ERR_raise_data(ERR_LIB_SYS, (r), NULL)
#  define TSerr(f, r) ERR_raise_data(ERR_LIB_TS, (r), NULL)
#  define UIerr(f, r) ERR_raise_data(ERR_LIB_UI, (r), NULL)
#  define X509V3err(f, r) ERR_raise_data(ERR_LIB_X509V3, (r), NULL)
#  define X509err(f, r) ERR_raise_data(ERR_LIB_X509, (r), NULL)
# endif

/*-
 * The error code packs differently depending on if it records a system
 * error or an OpenSSL error.
 *
 * A system error packs like this (we follow POSIX and only allow positive
 * numbers that fit in an |int|):
 *
 * +-+-------------------------------------------------------------+
 * |1|                     system error number                     |
 * +-+-------------------------------------------------------------+
 *
 * An OpenSSL error packs like this:
 *
 * <---------------------------- 32 bits -------------------------->
 *    <--- 8 bits ---><------------------ 23 bits ----------------->
 * +-+---------------+---------------------------------------------+
 * |0|    library    |                    reason                   |
 * +-+---------------+---------------------------------------------+
 *
 * A few of the reason bits are reserved as flags with special meaning:
 *
 *                    <5 bits-<>--------- 19 bits ----------------->
 *                   +-------+-+-----------------------------------+
 *                   | rflags| |          reason                   |
 *                   +-------+-+-----------------------------------+
 *                            ^
 *                            |
 *                           ERR_RFLAG_FATAL = ERR_R_FATAL
 *
 * The reason flags are part of the overall reason code for practical
 * reasons, as they provide an easy way to place different types of
 * reason codes in different numeric ranges.
 *
 * The currently known reason flags are:
 *
 * ERR_RFLAG_FATAL      Flags that the reason code is considered fatal.
 *                      For backward compatibility reasons, this flag
 *                      is also the code for ERR_R_FATAL (that reason
 *                      code served the dual purpose of flag and reason
 *                      code in one in pre-3.0 OpenSSL).
 * ERR_RFLAG_COMMON     Flags that the reason code is common to all
 *                      libraries.  All ERR_R_ macros must use this flag,
 *                      and no other _R_ macro is allowed to use it.
 */

/* Macros to help decode recorded system errors */
# define ERR_SYSTEM_FLAG                ((unsigned int)INT_MAX + 1)
# define ERR_SYSTEM_MASK                ((unsigned int)INT_MAX)

/*
 * Macros to help decode recorded OpenSSL errors
 * As expressed above, RFLAGS and REASON overlap by one bit to allow
 * ERR_R_FATAL to use ERR_RFLAG_FATAL as its reason code.
 */
# define ERR_LIB_OFFSET                 23L
# define ERR_LIB_MASK                   0xFF
# define ERR_RFLAGS_OFFSET              18L
# define ERR_RFLAGS_MASK                0x1F
# define ERR_REASON_MASK                0X7FFFFF

/*
 * Reason flags are defined pre-shifted to easily combine with the reason
 * number.
 */
# define ERR_RFLAG_FATAL                (0x1 << ERR_RFLAGS_OFFSET)
# define ERR_RFLAG_COMMON               (0x2 << ERR_RFLAGS_OFFSET)

# define ERR_SYSTEM_ERROR(errcode)      (((errcode) & ERR_SYSTEM_FLAG) != 0)

static ossl_unused ossl_inline int ERR_GET_LIB(unsigned long errcode)
{
    if (ERR_SYSTEM_ERROR(errcode))
        return ERR_LIB_SYS;
    return (errcode >> ERR_LIB_OFFSET) & ERR_LIB_MASK;
}

static ossl_unused ossl_inline int ERR_GET_FUNC(unsigned long errcode ossl_unused)
{
    return 0;
}

static ossl_unused ossl_inline int ERR_GET_RFLAGS(unsigned long errcode)
{
    if (ERR_SYSTEM_ERROR(errcode))
        return 0;
    return errcode & (ERR_RFLAGS_MASK << ERR_RFLAGS_OFFSET);
}

static ossl_unused ossl_inline int ERR_GET_REASON(unsigned long errcode)
{
    if (ERR_SYSTEM_ERROR(errcode))
        return errcode & ERR_SYSTEM_MASK;
    return errcode & ERR_REASON_MASK;
}

static ossl_unused ossl_inline int ERR_FATAL_ERROR(unsigned long errcode)
{
    return (ERR_GET_RFLAGS(errcode) & ERR_RFLAG_FATAL) != 0;
}

static ossl_unused ossl_inline int ERR_COMMON_ERROR(unsigned long errcode)
{
    return (ERR_GET_RFLAGS(errcode) & ERR_RFLAG_COMMON) != 0;
}

/*
 * ERR_PACK is a helper macro to properly pack OpenSSL error codes and may
 * only be used for that purpose.  System errors are packed internally.
 * ERR_PACK takes reason flags and reason code combined in |reason|.
 * ERR_PACK ignores |func|, that parameter is just legacy from pre-3.0 OpenSSL.
 */
# define ERR_PACK(lib,func,reason)                                      \
    ( (((unsigned long)(lib)    & ERR_LIB_MASK   ) << ERR_LIB_OFFSET) | \
      (((unsigned long)(reason) & ERR_REASON_MASK)) )

# ifndef OPENSSL_NO_DEPRECATED_3_0
#  define SYS_F_FOPEN             0
#  define SYS_F_CONNECT           0
#  define SYS_F_GETSERVBYNAME     0
#  define SYS_F_SOCKET            0
#  define SYS_F_IOCTLSOCKET       0
#  define SYS_F_BIND              0
#  define SYS_F_LISTEN            0
#  define SYS_F_ACCEPT            0
#  define SYS_F_WSASTARTUP        0
#  define SYS_F_OPENDIR           0
#  define SYS_F_FREAD             0
#  define SYS_F_GETADDRINFO       0
#  define SYS_F_GETNAMEINFO       0
#  define SYS_F_SETSOCKOPT        0
#  define SYS_F_GETSOCKOPT        0
#  define SYS_F_GETSOCKNAME       0
#  define SYS_F_GETHOSTBYNAME     0
#  define SYS_F_FFLUSH            0
#  define SYS_F_OPEN              0
#  define SYS_F_CLOSE             0
#  define SYS_F_IOCTL             0
#  define SYS_F_STAT              0
#  define SYS_F_FCNTL             0
#  define SYS_F_FSTAT             0
#  define SYS_F_SENDFILE          0
# endif

/*
 * All ERR_R_ codes must be combined with ERR_RFLAG_COMMON.
 */

/* "we came from here" global reason codes, range 1..255 */
# define ERR_R_SYS_LIB          (ERR_LIB_SYS/* 2 */ | ERR_RFLAG_COMMON)
# define ERR_R_BN_LIB           (ERR_LIB_BN/* 3 */ | ERR_RFLAG_COMMON)
# define ERR_R_RSA_LIB          (ERR_LIB_RSA/* 4 */ | ERR_RFLAG_COMMON)
# define ERR_R_DH_LIB           (ERR_LIB_DH/* 5 */ | ERR_RFLAG_COMMON)
# define ERR_R_EVP_LIB          (ERR_LIB_EVP/* 6 */ | ERR_RFLAG_COMMON)
# define ERR_R_BUF_LIB          (ERR_LIB_BUF/* 7 */ | ERR_RFLAG_COMMON)
# define ERR_R_OBJ_LIB          (ERR_LIB_OBJ/* 8 */ | ERR_RFLAG_COMMON)
# define ERR_R_PEM_LIB          (ERR_LIB_PEM/* 9 */ | ERR_RFLAG_COMMON)
# define ERR_R_DSA_LIB          (ERR_LIB_DSA/* 10 */ | ERR_RFLAG_COMMON)
# define ERR_R_X509_LIB         (ERR_LIB_X509/* 11 */ | ERR_RFLAG_COMMON)
# define ERR_R_ASN1_LIB         (ERR_LIB_ASN1/* 13 */ | ERR_RFLAG_COMMON)
# define ERR_R_CRYPTO_LIB       (ERR_LIB_CRYPTO/* 15 */ | ERR_RFLAG_COMMON)
# define ERR_R_EC_LIB           (ERR_LIB_EC/* 16 */ | ERR_RFLAG_COMMON)
# define ERR_R_BIO_LIB          (ERR_LIB_BIO/* 32 */ | ERR_RFLAG_COMMON)
# define ERR_R_PKCS7_LIB        (ERR_LIB_PKCS7/* 33 */ | ERR_RFLAG_COMMON)
# define ERR_R_X509V3_LIB       (ERR_LIB_X509V3/* 34 */ | ERR_RFLAG_COMMON)
# define ERR_R_ENGINE_LIB       (ERR_LIB_ENGINE/* 38 */ | ERR_RFLAG_COMMON)
# define ERR_R_UI_LIB           (ERR_LIB_UI/* 40 */ | ERR_RFLAG_COMMON)
# define ERR_R_ECDSA_LIB        (ERR_LIB_ECDSA/* 42 */ | ERR_RFLAG_COMMON)
# define ERR_R_OSSL_STORE_LIB   (ERR_LIB_OSSL_STORE/* 44 */ | ERR_RFLAG_COMMON)
# define ERR_R_OSSL_DECODER_LIB (ERR_LIB_OSSL_DECODER/* 60 */ | ERR_RFLAG_COMMON)

/* Other common error codes, range 256..2^ERR_RFLAGS_OFFSET-1 */
# define ERR_R_FATAL                             (ERR_RFLAG_FATAL|ERR_RFLAG_COMMON)
# define ERR_R_MALLOC_FAILURE                    (256|ERR_R_FATAL)
# define ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED       (257|ERR_R_FATAL)
# define ERR_R_PASSED_NULL_PARAMETER             (258|ERR_R_FATAL)
# define ERR_R_INTERNAL_ERROR                    (259|ERR_R_FATAL)
# define ERR_R_DISABLED                          (260|ERR_R_FATAL)
# define ERR_R_INIT_FAIL                         (261|ERR_R_FATAL)
# define ERR_R_PASSED_INVALID_ARGUMENT           (262|ERR_RFLAG_COMMON)
# define ERR_R_OPERATION_FAIL                    (263|ERR_R_FATAL)
# define ERR_R_INVALID_PROVIDER_FUNCTIONS        (264|ERR_R_FATAL)
# define ERR_R_INTERRUPTED_OR_CANCELLED          (265|ERR_RFLAG_COMMON)
# define ERR_R_NESTED_ASN1_ERROR                 (266|ERR_RFLAG_COMMON)
# define ERR_R_MISSING_ASN1_EOS                  (267|ERR_RFLAG_COMMON)

typedef struct ERR_string_data_st {
    unsigned long error;
    const char *string;
} ERR_STRING_DATA;

{-
    generate_lhash_macros("ERR_STRING_DATA");
-}

/* 12 lines and some on an 80 column terminal */
#define ERR_MAX_DATA_SIZE       1024

/* Building blocks */
void ERR_new(void);
void ERR_set_debug(const char *file, int line, const char *func);
void ERR_set_error(int lib, int reason, const char *fmt, ...);
void ERR_vset_error(int lib, int reason, const char *fmt, va_list args);

/* Main error raising functions */
# define ERR_raise(lib, reason) ERR_raise_data((lib),(reason),NULL)
# define ERR_raise_data                                         \
    (ERR_new(),                                                 \
     ERR_set_debug(OPENSSL_FILE,OPENSSL_LINE,OPENSSL_FUNC),     \
     ERR_set_error)

# ifndef OPENSSL_NO_DEPRECATED_3_0
/* Backward compatibility */
#  define ERR_put_error(lib, func, reason, file, line)          \
    (ERR_new(),                                                 \
     ERR_set_debug((file), (line), OPENSSL_FUNC),               \
     ERR_set_error((lib), (reason), NULL))
# endif

void ERR_set_error_data(char *data, int flags);

unsigned long ERR_get_error(void);
/*
 * TODO(3.0) consider if the following three functions should be deprecated.
 * They all drop the error record from the error queue, so regardless of which
 * one is used, the rest of the information is lost, making them not so useful.
 * The recommendation should be to use the peek functions to extract all the
 * additional data.
 */
unsigned long ERR_get_error_line(const char **file, int *line);
unsigned long ERR_get_error_func(const char **func);
unsigned long ERR_get_error_data(const char **data, int *flags);
unsigned long ERR_get_error_all(const char **file, int *line,
                                const char **func,
                                const char **data, int *flags);
DEPRECATEDIN_3_0(unsigned long ERR_get_error_line_data(const char **file,
                                                     int *line,
                                                     const char **data,
                                                     int *flags))
unsigned long ERR_peek_error(void);
unsigned long ERR_peek_error_line(const char **file, int *line);
unsigned long ERR_peek_error_func(const char **func);
unsigned long ERR_peek_error_data(const char **data, int *flags);
unsigned long ERR_peek_error_all(const char **file, int *line,
                                 const char **func,
                                 const char **data, int *flags);
DEPRECATEDIN_3_0(unsigned long ERR_peek_error_line_data(const char **file,
                                                      int *line,
                                                      const char **data,
                                                      int *flags))
unsigned long ERR_peek_last_error(void);
unsigned long ERR_peek_last_error_line(const char **file, int *line);
unsigned long ERR_peek_last_error_func(const char **func);
unsigned long ERR_peek_last_error_data(const char **data, int *flags);
unsigned long ERR_peek_last_error_all(const char **file, int *line,
                                      const char **func,
                                      const char **data, int *flags);
DEPRECATEDIN_3_0(unsigned long ERR_peek_last_error_line_data(const char **file,
                                                           int *line,
                                                           const char **data,
                                                           int *flags))

void ERR_clear_error(void);

char *ERR_error_string(unsigned long e, char *buf);
void ERR_error_string_n(unsigned long e, char *buf, size_t len);
const char *ERR_lib_error_string(unsigned long e);
DEPRECATEDIN_3_0(const char *ERR_func_error_string(unsigned long e))
const char *ERR_reason_error_string(unsigned long e);

void ERR_print_errors_cb(int (*cb) (const char *str, size_t len, void *u),
                         void *u);
# ifndef OPENSSL_NO_STDIO
void ERR_print_errors_fp(FILE *fp);
# endif
void ERR_print_errors(BIO *bp);

void ERR_add_error_data(int num, ...);
void ERR_add_error_vdata(int num, va_list args);
void ERR_add_error_txt(const char *sepr, const char *txt);
void ERR_add_error_mem_bio(const char *sep, BIO *bio);

int ERR_load_strings(int lib, ERR_STRING_DATA *str);
int ERR_load_strings_const(const ERR_STRING_DATA *str);
int ERR_unload_strings(int lib, ERR_STRING_DATA *str);
int ERR_load_ERR_strings(void);

#ifndef OPENSSL_NO_DEPRECATED_1_1_0
# define ERR_load_crypto_strings() \
    OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL)
# define ERR_free_strings() while(0) continue
#endif

DEPRECATEDIN_1_1_0(void ERR_remove_thread_state(void *))
DEPRECATEDIN_1_0_0(void ERR_remove_state(unsigned long pid))
DEPRECATEDIN_3_0(ERR_STATE *ERR_get_state(void))

int ERR_get_next_error_library(void);

int ERR_set_mark(void);
int ERR_pop_to_mark(void);
int ERR_clear_last_mark(void);

#ifdef  __cplusplus
}
#endif

#endif
