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/* * Copyright (C) 2002-2021 Free Software Foundation, Inc. * * This file is part of LIBTASN1. * * LIBTASN1 is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * LIBTASN1 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with LIBTASN1; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA * */ /** * SECTION:libtasn1 * @short_description: GNU ASN.1 library * * The Libtasn1 library provides Abstract Syntax Notation One (ASN.1, as * specified by the X.680 ITU-T recommendation) parsing and structures * management, and Distinguished Encoding Rules (DER, as per X.690) * encoding and decoding functions. */ #ifndef LIBTASN1_H # define LIBTASN1_H # ifndef ASN1_API # if defined ASN1_BUILDING && defined HAVE_VISIBILITY && HAVE_VISIBILITY # define ASN1_API __attribute__((__visibility__("default"))) # elif defined ASN1_BUILDING && defined _MSC_VER && ! defined ASN1_STATIC # define ASN1_API __declspec(dllexport) # elif defined _MSC_VER && ! defined ASN1_STATIC # define ASN1_API __declspec(dllimport) # else # define ASN1_API # endif # endif # ifdef __GNUC__ # define __LIBTASN1_CONST__ __attribute__((const)) # define __LIBTASN1_PURE__ __attribute__((pure)) # else # define __LIBTASN1_CONST__ # define __LIBTASN1_PURE__ # endif # include <sys/types.h> # include <time.h> # include <stdio.h> /* for FILE* */ # ifdef __cplusplus extern "C" { # endif /** * ASN1_VERSION: * * Version of the library as a string. */ # define ASN1_VERSION "4.18.0" /** * ASN1_VERSION_MAJOR: * * Major version number of the library. */ # define ASN1_VERSION_MAJOR 4 /** * ASN1_VERSION_MINOR: * * Minor version number of the library. */ # define ASN1_VERSION_MINOR 18 /** * ASN1_VERSION_PATCH: * * Patch version number of the library. */ # define ASN1_VERSION_PATCH 0 /** * ASN1_VERSION_NUMBER: * * Version number of the library as a number. */ # define ASN1_VERSION_NUMBER 0x041200 # if defined __GNUC__ && !defined ASN1_INTERNAL_BUILD # define _ASN1_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) # if _ASN1_GCC_VERSION >= 30100 # define _ASN1_GCC_ATTR_DEPRECATED __attribute__ ((__deprecated__)) # endif # endif # ifndef _ASN1_GCC_ATTR_DEPRECATED # define _ASN1_GCC_ATTR_DEPRECATED # endif /*****************************************/ /* Errors returned by libtasn1 functions */ /*****************************************/ # define ASN1_SUCCESS 0 # define ASN1_FILE_NOT_FOUND 1 # define ASN1_ELEMENT_NOT_FOUND 2 # define ASN1_IDENTIFIER_NOT_FOUND 3 # define ASN1_DER_ERROR 4 # define ASN1_VALUE_NOT_FOUND 5 # define ASN1_GENERIC_ERROR 6 # define ASN1_VALUE_NOT_VALID 7 # define ASN1_TAG_ERROR 8 # define ASN1_TAG_IMPLICIT 9 # define ASN1_ERROR_TYPE_ANY 10 # define ASN1_SYNTAX_ERROR 11 # define ASN1_MEM_ERROR 12 # define ASN1_MEM_ALLOC_ERROR 13 # define ASN1_DER_OVERFLOW 14 # define ASN1_NAME_TOO_LONG 15 # define ASN1_ARRAY_ERROR 16 # define ASN1_ELEMENT_NOT_EMPTY 17 # define ASN1_TIME_ENCODING_ERROR 18 # define ASN1_RECURSION 19 /*************************************/ /* Constants used in asn1_visit_tree */ /*************************************/ # define ASN1_PRINT_NAME 1 # define ASN1_PRINT_NAME_TYPE 2 # define ASN1_PRINT_NAME_TYPE_VALUE 3 # define ASN1_PRINT_ALL 4 /*****************************************/ /* Constants returned by asn1_read_tag */ /*****************************************/ # define ASN1_CLASS_UNIVERSAL 0x00 /* old: 1 */ # define ASN1_CLASS_APPLICATION 0x40 /* old: 2 */ # define ASN1_CLASS_CONTEXT_SPECIFIC 0x80 /* old: 3 */ # define ASN1_CLASS_PRIVATE 0xC0 /* old: 4 */ # define ASN1_CLASS_STRUCTURED 0x20 /*****************************************/ /* Constants returned by asn1_read_tag */ /*****************************************/ # define ASN1_TAG_BOOLEAN 0x01 # define ASN1_TAG_INTEGER 0x02 # define ASN1_TAG_SEQUENCE 0x10 # define ASN1_TAG_SET 0x11 # define ASN1_TAG_OCTET_STRING 0x04 # define ASN1_TAG_BIT_STRING 0x03 # define ASN1_TAG_UTCTime 0x17 # define ASN1_TAG_GENERALIZEDTime 0x18 # define ASN1_TAG_OBJECT_ID 0x06 # define ASN1_TAG_ENUMERATED 0x0A # define ASN1_TAG_NULL 0x05 # define ASN1_TAG_GENERALSTRING 0x1B # define ASN1_TAG_NUMERIC_STRING 0x12 # define ASN1_TAG_IA5_STRING 0x16 # define ASN1_TAG_TELETEX_STRING 0x14 # define ASN1_TAG_PRINTABLE_STRING 0x13 # define ASN1_TAG_UNIVERSAL_STRING 0x1C # define ASN1_TAG_BMP_STRING 0x1E # define ASN1_TAG_UTF8_STRING 0x0C # define ASN1_TAG_VISIBLE_STRING 0x1A /** * asn1_node: * * Structure definition used for the node of the tree * that represents an ASN.1 DEFINITION. */ typedef struct asn1_node_st asn1_node_st; typedef asn1_node_st *asn1_node; typedef const asn1_node_st *asn1_node_const; /** * ASN1_MAX_NAME_SIZE: * * Maximum number of characters of a name * inside a file with ASN1 definitions. */ # define ASN1_MAX_NAME_SIZE 64 /** * asn1_static_node: * @name: Node name * @type: Node typ * @value: Node value * * For the on-disk format of ASN.1 trees, created by asn1_parser2array(). */ typedef struct asn1_static_node_st { const char *name; /* Node name */ unsigned int type; /* Node type */ const void *value; /* Node value */ } asn1_static_node; /* List of constants for field type of asn1_static_node */ # define ASN1_ETYPE_INVALID 0 # define ASN1_ETYPE_CONSTANT 1 # define ASN1_ETYPE_IDENTIFIER 2 # define ASN1_ETYPE_INTEGER 3 # define ASN1_ETYPE_BOOLEAN 4 # define ASN1_ETYPE_SEQUENCE 5 # define ASN1_ETYPE_BIT_STRING 6 # define ASN1_ETYPE_OCTET_STRING 7 # define ASN1_ETYPE_TAG 8 # define ASN1_ETYPE_DEFAULT 9 # define ASN1_ETYPE_SIZE 10 # define ASN1_ETYPE_SEQUENCE_OF 11 # define ASN1_ETYPE_OBJECT_ID 12 # define ASN1_ETYPE_ANY 13 # define ASN1_ETYPE_SET 14 # define ASN1_ETYPE_SET_OF 15 # define ASN1_ETYPE_DEFINITIONS 16 # define ASN1_ETYPE_CHOICE 18 # define ASN1_ETYPE_IMPORTS 19 # define ASN1_ETYPE_NULL 20 # define ASN1_ETYPE_ENUMERATED 21 # define ASN1_ETYPE_GENERALSTRING 27 # define ASN1_ETYPE_NUMERIC_STRING 28 # define ASN1_ETYPE_IA5_STRING 29 # define ASN1_ETYPE_TELETEX_STRING 30 # define ASN1_ETYPE_PRINTABLE_STRING 31 # define ASN1_ETYPE_UNIVERSAL_STRING 32 # define ASN1_ETYPE_BMP_STRING 33 # define ASN1_ETYPE_UTF8_STRING 34 # define ASN1_ETYPE_VISIBLE_STRING 35 # define ASN1_ETYPE_UTC_TIME 36 # define ASN1_ETYPE_GENERALIZED_TIME 37 /** * ASN1_DELETE_FLAG_ZEROIZE: * * Used by: asn1_delete_structure2() * * Zeroize values prior to deinitialization. */ # define ASN1_DELETE_FLAG_ZEROIZE 1 /** * ASN1_DECODE_FLAG_ALLOW_PADDING: * * Used by: asn1_der_decoding2() * * This flag would allow arbitrary data past the DER data. */ # define ASN1_DECODE_FLAG_ALLOW_PADDING 1 /** * ASN1_DECODE_FLAG_STRICT_DER: * * Used by: asn1_der_decoding2() * * This flag would ensure that no BER decoding takes place. */ # define ASN1_DECODE_FLAG_STRICT_DER (1<<1) /** * ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME: * * Used by: asn1_der_decoding2() * * This flag will tolerate Time encoding errors when in strict DER. */ # define ASN1_DECODE_FLAG_ALLOW_INCORRECT_TIME (1<<2) /** * asn1_data_node_st: * @name: Node name * @value: Node value * @value_len: Node value size * @type: Node value type (ASN1_ETYPE_*) * * Data node inside a #asn1_node structure. */ struct asn1_data_node_st { const char *name; /* Node name */ const void *value; /* Node value */ unsigned int value_len; /* Node value size */ unsigned int type; /* Node value type (ASN1_ETYPE_*) */ }; typedef struct asn1_data_node_st asn1_data_node_st; /***********************************/ /* Fixed constants */ /***********************************/ /** * ASN1_MAX_ERROR_DESCRIPTION_SIZE: * * Maximum number of characters * of a description message * (null character included). */ # define ASN1_MAX_ERROR_DESCRIPTION_SIZE 128 /***********************************/ /* Functions definitions */ /***********************************/ extern ASN1_API int asn1_parser2tree (const char *file, asn1_node * definitions, char *error_desc); extern ASN1_API int asn1_parser2array (const char *inputFileName, const char *outputFileName, const char *vectorName, char *error_desc); extern ASN1_API int asn1_array2tree (const asn1_static_node * array, asn1_node * definitions, char *errorDescription); extern ASN1_API void asn1_print_structure (FILE * out, asn1_node_const structure, const char *name, int mode); extern ASN1_API int asn1_create_element (asn1_node_const definitions, const char *source_name, asn1_node * element); extern ASN1_API int asn1_delete_structure (asn1_node * structure); extern ASN1_API int asn1_delete_structure2 (asn1_node * structure, unsigned int flags); extern ASN1_API int asn1_delete_element (asn1_node structure, const char *element_name); extern ASN1_API int asn1_write_value (asn1_node node_root, const char *name, const void *ivalue, int len); extern ASN1_API int asn1_read_value (asn1_node_const root, const char *name, void *ivalue, int *len); extern ASN1_API int asn1_read_value_type (asn1_node_const root, const char *name, void *ivalue, int *len, unsigned int *etype); extern ASN1_API int asn1_read_node_value (asn1_node_const node, asn1_data_node_st * data); extern ASN1_API int asn1_number_of_elements (asn1_node_const element, const char *name, int *num); extern ASN1_API int asn1_der_coding (asn1_node_const element, const char *name, void *ider, int *len, char *ErrorDescription); extern ASN1_API int asn1_der_decoding2 (asn1_node * element, const void *ider, int *max_ider_len, unsigned int flags, char *errorDescription); extern ASN1_API int asn1_der_decoding (asn1_node * element, const void *ider, int ider_len, char *errorDescription); /* Do not use. Use asn1_der_decoding() instead. */ extern ASN1_API int asn1_der_decoding_element (asn1_node * structure, const char *elementName, const void *ider, int len, char *errorDescription) _ASN1_GCC_ATTR_DEPRECATED; extern ASN1_API int asn1_der_decoding_startEnd (asn1_node element, const void *ider, int ider_len, const char *name_element, int *start, int *end); extern ASN1_API int asn1_expand_any_defined_by (asn1_node_const definitions, asn1_node * element); extern ASN1_API int asn1_expand_octet_string (asn1_node_const definitions, asn1_node * element, const char *octetName, const char *objectName); extern ASN1_API int asn1_read_tag (asn1_node_const root, const char *name, int *tagValue, int *classValue); extern ASN1_API const char *asn1_find_structure_from_oid (asn1_node_const definitions, const char *oidValue); __LIBTASN1_PURE__ extern ASN1_API const char *asn1_check_version (const char *req_version); __LIBTASN1_PURE__ extern ASN1_API const char *asn1_strerror (int error); extern ASN1_API void asn1_perror (int error); # define ASN1_MAX_TAG_SIZE 4 # define ASN1_MAX_LENGTH_SIZE 9 # define ASN1_MAX_TL_SIZE (ASN1_MAX_TAG_SIZE+ASN1_MAX_LENGTH_SIZE) extern ASN1_API long asn1_get_length_der (const unsigned char *der, int der_len, int *len); extern ASN1_API long asn1_get_length_ber (const unsigned char *ber, int ber_len, int *len); extern ASN1_API void asn1_length_der (unsigned long int len, unsigned char *der, int *der_len); /* Other utility functions. */ extern ASN1_API int asn1_decode_simple_der (unsigned int etype, const unsigned char *der, unsigned int _der_len, const unsigned char **str, unsigned int *str_len); extern ASN1_API int asn1_decode_simple_ber (unsigned int etype, const unsigned char *der, unsigned int _der_len, unsigned char **str, unsigned int *str_len, unsigned int *ber_len); extern ASN1_API int asn1_encode_simple_der (unsigned int etype, const unsigned char *str, unsigned int str_len, unsigned char *tl, unsigned int *tl_len); extern ASN1_API asn1_node asn1_find_node (asn1_node_const pointer, const char *name); extern ASN1_API int asn1_copy_node (asn1_node dst, const char *dst_name, asn1_node_const src, const char *src_name); extern ASN1_API asn1_node asn1_dup_node (asn1_node_const src, const char *src_name); /* Internal and low-level DER utility functions. */ extern ASN1_API int asn1_get_tag_der (const unsigned char *der, int der_len, unsigned char *cls, int *len, unsigned long *tag); extern ASN1_API void asn1_octet_der (const unsigned char *str, int str_len, unsigned char *der, int *der_len); extern ASN1_API int asn1_get_octet_der (const unsigned char *der, int der_len, int *ret_len, unsigned char *str, int str_size, int *str_len); extern ASN1_API void asn1_bit_der (const unsigned char *str, int bit_len, unsigned char *der, int *der_len); extern ASN1_API int asn1_get_bit_der (const unsigned char *der, int der_len, int *ret_len, unsigned char *str, int str_size, int *bit_len); extern ASN1_API int asn1_get_object_id_der (const unsigned char *der, int der_len, int *ret_len, char *str, int str_size); extern ASN1_API int asn1_object_id_der (const char *str, unsigned char *der, int *der_len, unsigned flags); /* Compatibility types */ /** * asn1_retCode: * * Type formerly returned by libtasn1 functions. * * Deprecated: 3.0: Use int instead. */ typedef int asn1_retCode _ASN1_GCC_ATTR_DEPRECATED; /** * node_asn_struct: * * Compat #define. * * Deprecated: 3.0: Use #asn1_node instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define node_asn_struct _Pragma ("GCC warning \"'node_asn_struct' macro is deprecated, use 'asn1_node' instead.\"") asn1_node_st # else # define node_asn_struct asn1_node_st # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * node_asn: * * Compat #define. * * Deprecated: 3.0: Use #asn1_node instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define node_asn _Pragma ("GCC warning \"'node_asn' macro is deprecated, use 'asn1_node' instead.\"") asn1_node_st # else # define node_asn asn1_node_st # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * ASN1_TYPE: * * Compat #define. * * Deprecated: 3.0: Use #asn1_node instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define ASN1_TYPE _Pragma ("GCC warning \"'ASN1_TYPE' macro is deprecated, use 'asn1_node' instead.\"") asn1_node # else # define ASN1_TYPE asn1_node # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * ASN1_TYPE_EMPTY: * * Compat #define. * * Deprecated: 3.0: Use NULL instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define ASN1_TYPE_EMPTY _Pragma ("GCC warning \"'ASN1_TYPE_EMPTY' macro is deprecated, use 'NULL' instead.\"") NULL # else # define ASN1_TYPE_EMPTY NULL # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * static_struct_asn: * * Compat #define. * * Deprecated: 3.0: Use #asn1_static_node instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define static_struct_asn _Pragma ("GCC warning \"'static_struct_asn' macro is deprecated, use 'asn1_static_node_st' instead.\"") asn1_static_node_st # else # define static_struct_asn asn1_static_node_st # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * ASN1_ARRAY_TYPE: * * Compat #define. * * Deprecated: 3.0: Use #asn1_static_node instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define ASN1_ARRAY_TYPE _Pragma ("GCC warning \"'ASN1_ARRAY_TYPE' macro is deprecated, use 'asn1_static_node' instead.\"") asn1_static_node # else # define ASN1_ARRAY_TYPE asn1_static_node # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * asn1_static_node_t: * * Compat #define. * * Deprecated: 3.0: Use #asn1_static_node instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define asn1_static_node_t _Pragma ("GCC warning \"'asn1_static_node_t' macro is deprecated, use 'asn1_static_node' instead.\"") asn1_static_node # else # define asn1_static_node_t asn1_static_node # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * node_data_struct: * * Compat #define. * * Deprecated: 3.0: Use #asn1_data_node_st instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define node_data_struct _Pragma ("GCC warning \"'node_data_struct' macro is deprecated, use 'asn1_data_node_st' instead.\"") asn1_data_node_st # else # define node_data_struct asn1_data_node_st # endif # endif /* !ASN1_DISABLE_DEPRECATED */ /** * ASN1_DATA_NODE: * * Compat #define. * * Deprecated: 3.0: Use #asn1_data_node_st instead. */ # ifndef ASN1_DISABLE_DEPRECATED # if _ASN1_GCC_VERSION >= 30100 # define ASN1_DATA_NODE _Pragma ("GCC warning \"'asn1_static_node_t' macro is deprecated, use 'asn1_static_node' instead.\"") asn1_data_node_st # else # define ASN1_DATA_NODE asn1_data_node_st # endif # endif /* !ASN1_DISABLE_DEPRECATED */ # ifdef __cplusplus } # endif #endif /* LIBTASN1_H */