text: /*
   * Copyright 2005-2017 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the OpenSSL license (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
   */
  
  /* Internal ASN1 structures and functions: not for application use */
  
  int asn1_time_to_tm(struct tm *tm, const ASN1_TIME *d);
  int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d);
  int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d);
  
  /* ASN1 scan context structure */
  
  struct asn1_sctx_st {
      /* The ASN1_ITEM associated with this field */
      const ASN1_ITEM *it;
      /* If ASN1_TEMPLATE associated with this field */
      const ASN1_TEMPLATE *tt;
      /* Various flags associated with field and context */
      unsigned long flags;
      /* If SEQUENCE OF or SET OF, field index */
      int skidx;
      /* ASN1 depth of field */
      int depth;
      /* Structure and field name */
      const char *sname, *fname;
      /* If a primitive type the type of underlying field */
      int prim_type;
      /* The field value itself */
      ASN1_VALUE **field;
      /* Callback to pass information to */
      int (*scan_cb) (ASN1_SCTX *ctx);
      /* Context specific application data */
      void *app_data;
  } /* ASN1_SCTX */ ;
  
  typedef struct mime_param_st MIME_PARAM;
  DEFINE_STACK_OF(MIME_PARAM)
  typedef struct mime_header_st MIME_HEADER;
  DEFINE_STACK_OF(MIME_HEADER)
  
  void asn1_string_embed_free(ASN1_STRING *a, int embed);
  
  int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
  int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
                               const ASN1_ITEM *it);
  
  ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
  
  const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
                                   int nullerr);
  
  int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it);
  
  void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
  void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
  int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
                       const ASN1_ITEM *it);
  int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
                    const ASN1_ITEM *it);
  
  void asn1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed);
  void asn1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
  
  ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
                               long length);
  int i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a, unsigned char **pp);
  ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a,
                                       const unsigned char **pp, long length);
  int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp);
  ASN1_INTEGER *c2i_ASN1_INTEGER(ASN1_INTEGER **a, const unsigned char **pp,
                                 long length);
  
  /* Internal functions used by x_int64.c */
  int c2i_uint64_int(uint64_t *ret, int *neg, const unsigned char **pp, long len);
  int i2c_uint64_int(unsigned char *p, uint64_t r, int neg);
  
  ASN1_TIME *asn1_time_from_tm(ASN1_TIME *s, struct tm *ts, int type);
  