path: root/include/openssl/x509_vfy.h

/* 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.]
 */

#ifndef HEADER_X509_VFY_H
# define HEADER_X509_VFY_H

/*
 * Protect against recursion, x509.h and x509_vfy.h each include the other.
 */
# ifndef HEADER_X509_H
#  include <openssl/x509.h>
# endif

# include <openssl/opensslconf.h>
# include <openssl/lhash.h>
# include <openssl/bio.h>
# include <openssl/crypto.h>
# include <openssl/symhacks.h>

#ifdef  __cplusplus
extern "C" {
#endif

typedef struct x509_file_st {
    int num_paths;              /* number of paths to files or directories */
    int num_alloced;
    char **paths;               /* the list of paths or directories */
    int *path_type;
} X509_CERT_FILE_CTX;

/*******************************/
/*-
SSL_CTX -> X509_STORE
                -> X509_LOOKUP
                        ->X509_LOOKUP_METHOD
                -> X509_LOOKUP
                        ->X509_LOOKUP_METHOD

SSL     -> X509_STORE_CTX
                ->X509_STORE

The X509_STORE holds the tables etc for verification stuff.
A X509_STORE_CTX is used while validating a single certificate.
The X509_STORE has X509_LOOKUPs for looking up certs.
The X509_STORE then calls a function to actually verify the
certificate chain.
*/

typedef enum {
    X509_LU_RETRY = -1,
    X509_LU_FAIL, X509_LU_X509, X509_LU_CRL
} X509_LOOKUP_TYPE;

typedef struct x509_object_st {
    /* one of the above types */
    X509_LOOKUP_TYPE type;
    union {
        char *ptr;
        X509 *x509;
        X509_CRL *crl;
        EVP_PKEY *pkey;
    } data;
} X509_OBJECT;

typedef struct x509_lookup_st X509_LOOKUP;

DEFINE_STACK_OF(X509_LOOKUP)
DEFINE_STACK_OF(X509_OBJECT)

/* This is a static that defines the function interface */
typedef struct x509_lookup_method_st {
    const char *name;
    int (*new_item) (X509_LOOKUP *ctx);
    void (*free) (X509_LOOKUP *ctx);
    int (*init) (X509_LOOKUP *ctx);
    int (*shutdown) (X509_LOOKUP *ctx);
    int (*ctrl) (X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
                 char **ret);
    int (*get_by_subject) (X509_LOOKUP *ctx, int type, X509_NAME *name,
                           X509_OBJECT *ret);
    int (*get_by_issuer_serial) (X509_LOOKUP *ctx, int type, X509_NAME *name,
                                 ASN1_INTEGER *serial, X509_OBJECT *ret);
    int (*get_by_fingerprint) (X509_LOOKUP *ctx, int type,
                               unsigned char *bytes, int len,
                               X509_OBJECT *ret);
    int (*get_by_alias) (X509_LOOKUP *ctx, int type, char *str, int len,
                         X509_OBJECT *ret);
} X509_LOOKUP_METHOD;

typedef struct X509_VERIFY_PARAM_st X509_VERIFY_PARAM;

DEFINE_STACK_OF(X509_VERIFY_PARAM)

/*
 * This is used to hold everything.  It is used for all certificate
 * validation.  Once we have a certificate chain, the 'verify' function is
 * then called to actually check the cert chain.
 */
struct x509_store_st {
    /* The following is a cache of trusted certs */
    int cache;                  /* if true, stash any hits */
    STACK_OF(X509_OBJECT) *objs; /* Cache of all objects */
    /* These are external lookup methods */
    STACK_OF(X509_LOOKUP) *get_cert_methods;
    X509_VERIFY_PARAM *param;
    /* Callbacks for various operations */
    /* called to verify a certificate */
    int (*verify) (X509_STORE_CTX *ctx);
    /* error callback */
    int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
    /* get issuers cert from ctx */
    int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
    /* check issued */
    int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
    /* Check revocation status of chain */
    int (*check_revocation) (X509_STORE_CTX *ctx);
    /* retrieve CRL */
    int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
    /* Check CRL validity */
    int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
    /* Check certificate against CRL */
    int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
    STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx, X509_NAME *nm);
    STACK_OF(X509_CRL) *(*lookup_crls) (X509_STORE_CTX *ctx, X509_NAME *nm);
    int (*cleanup) (X509_STORE_CTX *ctx);
    CRYPTO_EX_DATA ex_data;
    int references;
    CRYPTO_RWLOCK *lock;
} /* X509_STORE */ ;

int X509_STORE_set_depth(X509_STORE *store, int depth);

# define X509_STORE_set_verify_cb_func(ctx,func) ((ctx)->verify_cb=(func))
# define X509_STORE_set_verify_func(ctx,func)    ((ctx)->verify=(func))

/* This is the functions plus an instance of the local variables. */
struct x509_lookup_st {
    int init;                   /* have we been started */
    int skip;                   /* don't use us. */
    X509_LOOKUP_METHOD *method; /* the functions */
    char *method_data;          /* method data */
    X509_STORE *store_ctx;      /* who owns us */
} /* X509_LOOKUP */ ;

/*
 * This is a used when verifying cert chains.  Since the gathering of the
 * cert chain can take some time (and have to be 'retried', this needs to be
 * kept and passed around.
 */
struct x509_store_ctx_st {      /* X509_STORE_CTX */
    X509_STORE *ctx;
    /* used when looking up certs */
    int current_method;
    /* The following are set by the caller */
    /* The cert to check */
    X509 *cert;
    /* chain of X509s - untrusted - passed in */
    STACK_OF(X509) *untrusted;
    /* set of CRLs passed in */
    STACK_OF(X509_CRL) *crls;
    X509_VERIFY_PARAM *param;
    /* Other info for use with get_issuer() */
    void *other_ctx;
    /* Callbacks for various operations */
    /* called to verify a certificate */
    int (*verify) (X509_STORE_CTX *ctx);
    /* error callback */
    int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
    /* get issuers cert from ctx */
    int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
    /* check issued */
    int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
    /* Check revocation status of chain */
    int (*check_revocation) (X509_STORE_CTX *ctx);
    /* retrieve CRL */
    int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
    /* Check CRL validity */
    int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
    /* Check certificate against CRL */
    int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
    int (*check_policy) (X509_STORE_CTX *ctx);
    STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx, X509_NAME *nm);
    STACK_OF(X509_CRL) *(*lookup_crls) (X509_STORE_CTX *ctx, X509_NAME *nm);
    int (*cleanup) (X509_STORE_CTX *ctx);
    /* The following is built up */
    /* if 0, rebuild chain */
    int valid;
    /* number of untrusted certs */
    int num_untrusted;
    /* chain of X509s - built up and trusted */
    STACK_OF(X509) *chain;
    /* Valid policy tree */
    X509_POLICY_TREE *tree;
    /* Require explicit policy value */
    int explicit_policy;
    /* When something goes wrong, this is why */
    int error_depth;
    int error;
    X509 *current_cert;
    /* cert currently being tested as valid issuer */
    X509 *current_issuer;
    /* current CRL */
    X509_CRL *current_crl;
    /* score of current CRL */
    int current_crl_score;
    /* Reason mask */
    unsigned int current_reasons;
    /* For CRL path validation: parent context */
    X509_STORE_CTX *parent;
    CRYPTO_EX_DATA ex_data;
    struct dane_st *dane;
    /* signed via bare TA public key, rather than CA certificate */
    int bare_ta_signed;
} /* X509_STORE_CTX */ ;

void X509_STORE_CTX_set_depth(X509_STORE_CTX *ctx, int depth);

# define X509_STORE_CTX_set_app_data(ctx,data) \
        X509_STORE_CTX_set_ex_data(ctx,0,data)
# define X509_STORE_CTX_get_app_data(ctx) \
        X509_STORE_CTX_get_ex_data(ctx,0)

# define X509_L_FILE_LOAD        1
# define X509_L_ADD_DIR          2

# define X509_LOOKUP_load_file(x,name,type) \
                X509_LOOKUP_ctrl((x),X509_L_FILE_LOAD,(name),(long)(type),NULL)

# define X509_LOOKUP_add_dir(x,name,type) \
                X509_LOOKUP_ctrl((x),X509_L_ADD_DIR,(name),(long)(type),NULL)

# define         X509_V_OK                                       0
# define         X509_V_ERR_UNSPECIFIED                          1
# define         X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT            2
# define         X509_V_ERR_UNABLE_TO_GET_CRL                    3
# define         X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE     4
# define         X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE      5
# define         X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY   6
# define         X509_V_ERR_CERT_SIGNATURE_FAILURE               7
# define         X509_V_ERR_CRL_SIGNATURE_FAILURE                8
# define         X509_V_ERR_CERT_NOT_YET_VALID                   9
# define         X509_V_ERR_CERT_HAS_EXPIRED                     10
# define         X509_V_ERR_CRL_NOT_YET_VALID                    11
# define         X509_V_ERR_CRL_HAS_EXPIRED                      12
# define         X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD       13
# define         X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD        14
# define         X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD       15
# define         X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD       16
# define         X509_V_ERR_OUT_OF_MEM                           17
# define         X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT          18
# define         X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN            19
# define         X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY    20
# define         X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE      21
# define         X509_V_ERR_CERT_CHAIN_TOO_LONG                  22
# define         X509_V_ERR_CERT_REVOKED                         23
# define         X509_V_ERR_INVALID_CA                           24
# define         X509_V_ERR_PATH_LENGTH_EXCEEDED                 25
# define         X509_V_ERR_INVALID_PURPOSE                      26
# define         X509_V_ERR_CERT_UNTRUSTED                       27
# define         X509_V_ERR_CERT_REJECTED                        28
/* These are 'informational' when looking for issuer cert */
# define         X509_V_ERR_SUBJECT_ISSUER_MISMATCH              29
# define         X509_V_ERR_AKID_SKID_MISMATCH                   30
# define         X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH          31
# define         X509_V_ERR_KEYUSAGE_NO_CERTSIGN                 32
# define         X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER             33
# define         X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION         34
# define         X509_V_ERR_KEYUSAGE_NO_CRL_SIGN                 35
# define         X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION     36
# define         X509_V_ERR_INVALID_NON_CA                       37
# define         X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED           38
# define         X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE        39
# define         X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED       40
# define         X509_V_ERR_INVALID_EXTENSION                    41
# define         X509_V_ERR_INVALID_POLICY_EXTENSION             42
# define         X509_V_ERR_NO_EXPLICIT_POLICY                   43
# define         X509_V_ERR_DIFFERENT_CRL_SCOPE                  44
# define         X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE        45
# define         X509_V_ERR_UNNESTED_RESOURCE                    46
# define         X509_V_ERR_PERMITTED_VIOLATION                  47
# define         X509_V_ERR_EXCLUDED_VIOLATION                   48
# define         X509_V_ERR_SUBTREE_MINMAX                       49
/* The application is not happy */
# define         X509_V_ERR_APPLICATION_VERIFICATION             50
# define         X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE          51
# define         X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX        52
# define         X509_V_ERR_UNSUPPORTED_NAME_SYNTAX              53
# define         X509_V_ERR_CRL_PATH_VALIDATION_ERROR            54
/* Another issuer check debug option */
# define         X509_V_ERR_PATH_LOOP                            55
/* Suite B mode algorithm violation */
# define         X509_V_ERR_SUITE_B_INVALID_VERSION              56
# define         X509_V_ERR_SUITE_B_INVALID_ALGORITHM            57
# define         X509_V_ERR_SUITE_B_INVALID_CURVE                58
# define         X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM  59
# define         X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED              60
# define         X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256 61
/* Host, email and IP check errors */
# define         X509_V_ERR_HOSTNAME_MISMATCH                    62
# define         X509_V_ERR_EMAIL_MISMATCH                       63
# define         X509_V_ERR_IP_ADDRESS_MISMATCH                  64
/* DANE TLSA errors */
# define         X509_V_ERR_DANE_NO_MATCH                        65


/* Certificate verify flags */

# if OPENSSL_API_COMPAT < 0x10100000L
#  define X509_V_FLAG_CB_ISSUER_CHECK             0x0   /* Deprecated */
# endif
/* Use check time instead of current time */
# define X509_V_FLAG_USE_CHECK_TIME              0x2
/* Lookup CRLs */
# define X509_V_FLAG_CRL_CHECK                   0x4
/* Lookup CRLs for whole chain */
# define X509_V_FLAG_CRL_CHECK_ALL               0x8
/* Ignore unhandled critical extensions */
# define X509_V_FLAG_IGNORE_CRITICAL             0x10
/* Disable workarounds for broken certificates */
# define X509_V_FLAG_X509_STRICT                 0x20
/* Enable proxy certificate validation */
# define X509_V_FLAG_ALLOW_PROXY_CERTS           0x40
/* Enable policy checking */
# define X509_V_FLAG_POLICY_CHECK                0x80
/* Policy variable require-explicit-policy */
# define X509_V_FLAG_EXPLICIT_POLICY             0x100
/* Policy variable inhibit-any-policy */
# define X509_V_FLAG_INHIBIT_ANY                 0x200
/* Policy variable inhibit-policy-mapping */
# define X509_V_FLAG_INHIBIT_MAP                 0x400
/* Notify callback that policy is OK */
# define X509_V_FLAG_NOTIFY_POLICY               0x800
/* Extended CRL features such as indirect CRLs, alternate CRL signing keys */
# define X509_V_FLAG_EXTENDED_CRL_SUPPORT        0x1000
/* Delta CRL support */
# define X509_V_FLAG_USE_DELTAS                  0x2000
/* Check selfsigned CA signature */
# define X509_V_FLAG_CHECK_SS_SIGNATURE          0x4000
/* Use trusted store first */
# define X509_V_FLAG_TRUSTED_FIRST               0x8000
/* Suite B 128 bit only mode: not normally used */
# define X509_V_FLAG_SUITEB_128_LOS_ONLY         0x10000
/* Suite B 192 bit only mode */
# define X509_V_FLAG_SUITEB_192_LOS              0x20000
/* Suite B 128 bit mode allowing 192 bit algorithms */
# define X509_V_FLAG_SUITEB_128_LOS              0x30000
/* Allow partial chains if at least one certificate is in trusted store */
# define X509_V_FLAG_PARTIAL_CHAIN               0x80000
/*
 * If the initial chain is not trusted, do not attempt to build an alternative
 * chain. Alternate chain checking was introduced in 1.1.0. Setting this flag
 * will force the behaviour to match that of previous versions.
 */
# define X509_V_FLAG_NO_ALT_CHAINS               0x100000
/* Do not check certificate/CRL validity against current time */
# define X509_V_FLAG_NO_CHECK_TIME               0x200000

# define X509_VP_FLAG_DEFAULT                    0x1
# define X509_VP_FLAG_OVERWRITE                  0x2
# define X509_VP_FLAG_RESET_FLAGS                0x4
# define X509_VP_FLAG_LOCKED                     0x8
# define X509_VP_FLAG_ONCE                       0x10

/* Internal use: mask of policy related options */
# define X509_V_FLAG_POLICY_MASK (X509_V_FLAG_POLICY_CHECK \
                                | X509_V_FLAG_EXPLICIT_POLICY \
                                | X509_V_FLAG_INHIBIT_ANY \
                                | X509_V_FLAG_INHIBIT_MAP)

int X509_OBJECT_idx_by_subject(STACK_OF(X509_OBJECT) *h, int type,
                               X509_NAME *name);
X509_OBJECT *X509_OBJECT_retrieve_by_subject(STACK_OF(X509_OBJECT) *h,
                                             int type, X509_NAME *name);
X509_OBJECT *X509_OBJECT_retrieve_match(STACK_OF(X509_OBJECT) *h,
                                        X509_OBJECT *x);
void X509_OBJECT_up_ref_count(X509_OBJECT *a);
void X509_OBJECT_free_contents(X509_OBJECT *a);
X509_STORE *X509_STORE_new(void);
void X509_STORE_free(X509_STORE *v);
int X509_STORE_up_ref(X509_STORE *v);

STACK_OF(X509) *X509_STORE_get1_certs(X509_STORE_CTX *st, X509_NAME *nm);
STACK_OF(X509_CRL) *X509_STORE_get1_crls(X509_STORE_CTX *st, X509_NAME *nm);
int X509_STORE_set_flags(X509_STORE *ctx, unsigned long flags);
int X509_STORE_set_purpose(X509_STORE *ctx, int purpose);
int X509_STORE_set_trust(X509_STORE *ctx, int trust);
int X509_STORE_set1_param(X509_STORE *ctx, X509_VERIFY_PARAM *pm);

void X509_STORE_set_verify_cb(X509_STORE *ctx,
                              int (*verify_cb) (int, X509_STORE_CTX *));

void X509_STORE_set_lookup_crls_cb(X509_STORE *ctx,
                                   STACK_OF(X509_CRL) *(*cb) (X509_STORE_CTX
                                                              *ctx,
                                                              X509_NAME *nm));

X509_STORE_CTX *X509_STORE_CTX_new(void);

int X509_STORE_CTX_get1_issuer(X509 **issuer, X509_STORE_CTX *ctx, X509 *x);

void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
                        X509 *x509, STACK_OF(X509) *chain);
void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);

X509_STORE *X509_STORE_CTX_get0_store(X509_STORE_CTX *ctx);

X509_LOOKUP *X509_STORE_add_lookup(X509_STORE *v, X509_LOOKUP_METHOD *m);
X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void);
X509_LOOKUP_METHOD *X509_LOOKUP_file(void);

int X509_STORE_add_cert(X509_STORE *ctx, X509 *x);
int X509_STORE_add_crl(X509_STORE *ctx, X509_CRL *x);

int X509_STORE_get_by_subject(X509_STORE_CTX *vs, int type, X509_NAME *name,
                              X509_OBJECT *ret);

int X509_LOOKUP_ctrl(X509_LOOKUP *ctx, int cmd, const char *argc,
                     long argl, char **ret);

int X509_load_cert_file(X509_LOOKUP *ctx, const char *file, int type);
int X509_load_crl_file(X509_LOOKUP *ctx, const char *file, int type);
int X509_load_cert_crl_file(X509_LOOKUP *ctx, const char *file, int type);

X509_LOOKUP *X509_LOOKUP_new(X509_LOOKUP_METHOD *method);
void X509_LOOKUP_free(X509_LOOKUP *ctx);
int X509_LOOKUP_init(X509_LOOKUP *ctx);
int X509_LOOKUP_by_subject(X509_LOOKUP *ctx, int type, X509_NAME *name,
                           X509_OBJECT *ret);
int X509_LOOKUP_by_issuer_serial(X509_LOOKUP *ctx, int type, X509_NAME *name,
                                 ASN1_INTEGER *serial, X509_OBJECT *ret);
int X509_LOOKUP_by_fingerprint(X509_LOOKUP *ctx, int type,
                               unsigned char *bytes, int len,
                               X509_OBJECT *ret);
int X509_LOOKUP_by_alias(X509_LOOKUP *ctx, int type, char *str, int len,
                         X509_OBJECT *ret);
int X509_LOOKUP_shutdown(X509_LOOKUP *ctx);

int X509_STORE_load_locations(X509_STORE *ctx,
                              const char *file, const char *dir);
int X509_STORE_set_default_paths(X509_STORE *ctx);

#define X509_STORE_CTX_get_ex_new_index(l, p, newf, dupf, freef) \
    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509_STORE_CTX, l, p, newf, dupf, freef)
int X509_STORE_CTX_set_ex_data(X509_STORE_CTX *ctx, int idx, void *data);
void *X509_STORE_CTX_get_ex_data(X509_STORE_CTX *ctx, int idx);
int X509_STORE_CTX_get_error(X509_STORE_CTX *ctx);
void X509_STORE_CTX_set_error(X509_STORE_CTX *ctx, int s);
int X509_STORE_CTX_get_error_depth(X509_STORE_CTX *ctx);
X509 *X509_STORE_CTX_get_current_cert(X509_STORE_CTX *ctx);
X509 *X509_STORE_CTX_get0_current_issuer(X509_STORE_CTX *ctx);
X509_CRL *X509_STORE_CTX_get0_current_crl(X509_STORE_CTX *ctx);
X509_STORE_CTX *X509_STORE_CTX_get0_parent_ctx(X509_STORE_CTX *ctx);
STACK_OF(X509) *X509_STORE_CTX_get_chain(X509_STORE_CTX *ctx);
STACK_OF(X509) *X509_STORE_CTX_get1_chain(X509_STORE_CTX *ctx);
void X509_STORE_CTX_set_cert(X509_STORE_CTX *c, X509 *x);
void X509_STORE_CTX_set_chain(X509_STORE_CTX *c, STACK_OF(X509) *sk);
void X509_STORE_CTX_set0_crls(X509_STORE_CTX *c, STACK_OF(X509_CRL) *sk);
int X509_STORE_CTX_set_purpose(X509_STORE_CTX *ctx, int purpose);
int X509_STORE_CTX_set_trust(X509_STORE_CTX *ctx, int trust);
int X509_STORE_CTX_purpose_inherit(X509_STORE_CTX *ctx, int def_purpose,
                                   int purpose, int trust);
void X509_STORE_CTX_set_flags(X509_STORE_CTX *ctx, unsigned long flags);
void X509_STORE_CTX_set_time(X509_STORE_CTX *ctx, unsigned long flags,
                             time_t t);
void X509_STORE_CTX_set_verify_cb(X509_STORE_CTX *ctx,
                                  int (*verify_cb) (int, X509_STORE_CTX *));

X509_POLICY_TREE *X509_STORE_CTX_get0_policy_tree(X509_STORE_CTX *ctx);
int X509_STORE_CTX_get_explicit_policy(X509_STORE_CTX *ctx);
int X509_STORE_CTX_get_num_untrusted(X509_STORE_CTX *ctx);

X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx);
void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param);
int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name);

/*
 * Bridge opacity barrier between libcrypt and libssl, also needed to support
 * offline testing in test/danetest.c
 */
void X509_STORE_CTX_set0_dane(X509_STORE_CTX *ctx, struct dane_st *dane);

/* X509_VERIFY_PARAM functions */

X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void);
void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param);
int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *to,
                              const X509_VERIFY_PARAM *from);
int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,
                           const X509_VERIFY_PARAM *from);
int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name);
int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param,
                                unsigned long flags);
int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
                                  unsigned long flags);
unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param);
int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose);
int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust);
void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t);
int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
                                  ASN1_OBJECT *policy);
int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
                                    STACK_OF(ASN1_OBJECT) *policies);

int X509_VERIFY_PARAM_set1_host(X509_VERIFY_PARAM *param,
                                const char *name, size_t namelen);
int X509_VERIFY_PARAM_add1_host(X509_VERIFY_PARAM *param,
                                const char *name, size_t namelen);
void X509_VERIFY_PARAM_set_hostflags(X509_VERIFY_PARAM *param,
                                     unsigned int flags);
char *X509_VERIFY_PARAM_get0_peername(X509_VERIFY_PARAM *);
void X509_VERIFY_PARAM_move_peername(X509_VERIFY_PARAM *, X509_VERIFY_PARAM *);
int X509_VERIFY_PARAM_set1_email(X509_VERIFY_PARAM *param,
                                 const char *email, size_t emaillen);
int X509_VERIFY_PARAM_set1_ip(X509_VERIFY_PARAM *param,
                              const unsigned char *ip, size_t iplen);
int X509_VERIFY_PARAM_set1_ip_asc(X509_VERIFY_PARAM *param,
                                  const char *ipasc);

int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
const char *X509_VERIFY_PARAM_get0_name(const X509_VERIFY_PARAM *param);

int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param);
int X509_VERIFY_PARAM_get_count(void);
const X509_VERIFY_PARAM *X509_VERIFY_PARAM_get0(int id);
const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name);
void X509_VERIFY_PARAM_table_cleanup(void);

/* Non positive return values are errors */
#define X509_PCY_TREE_FAILURE  -2 /* Failure to satisfy explicit policy */
#define X509_PCY_TREE_INVALID  -1 /* Inconsistent or invalid extensions */
#define X509_PCY_TREE_INTERNAL  0 /* Internal error, most likely malloc */

/*
 * Positive return values form a bit mask, all but the first are internal to
 * the library and don't appear in results from X509_policy_check().
 */
#define X509_PCY_TREE_VALID     1 /* The policy tree is valid */
#define X509_PCY_TREE_EMPTY     2 /* The policy tree is empty */
#define X509_PCY_TREE_EXPLICIT  4 /* Explicit policy required */

int X509_policy_check(X509_POLICY_TREE **ptree, int *pexplicit_policy,
                      STACK_OF(X509) *certs,
                      STACK_OF(ASN1_OBJECT) *policy_oids, unsigned int flags);

void X509_policy_tree_free(X509_POLICY_TREE *tree);

int X509_policy_tree_level_count(const X509_POLICY_TREE *tree);
X509_POLICY_LEVEL *X509_policy_tree_get0_level(const X509_POLICY_TREE *tree,
                                               int i);

STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_policies(const
                                                           X509_POLICY_TREE
                                                           *tree);

STACK_OF(X509_POLICY_NODE) *X509_policy_tree_get0_user_policies(const
                                                                X509_POLICY_TREE
                                                                *tree);

int X509_policy_level_node_count(X509_POLICY_LEVEL *level);

X509_POLICY_NODE *X509_policy_level_get0_node(X509_POLICY_LEVEL *level,
                                              int i);

const ASN1_OBJECT *X509_policy_node_get0_policy(const X509_POLICY_NODE *node);

STACK_OF(POLICYQUALINFO) *X509_policy_node_get0_qualifiers(const
                                                           X509_POLICY_NODE
                                                           *node);
const X509_POLICY_NODE *X509_policy_node_get0_parent(const X509_POLICY_NODE
                                                     *node);

#ifdef  __cplusplus
}
#endif
#endif