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/*
* Copyright 2014-2020 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
*/
#include "internal/refcount.h"
/*
* This structure holds all parameters associated with a verify operation by
* including an X509_VERIFY_PARAM structure in related structures the
* parameters used can be customized
*/
struct X509_VERIFY_PARAM_st {
char *name;
time_t check_time; /* Time to use */
uint32_t inh_flags; /* Inheritance flags */
unsigned long flags; /* Various verify flags */
int purpose; /* purpose to check untrusted certificates */
int trust; /* trust setting to check */
int depth; /* Verify depth */
int auth_level; /* Security level for chain verification */
STACK_OF(ASN1_OBJECT) *policies; /* Permissible policies */
/* Peer identity details */
STACK_OF(OPENSSL_STRING) *hosts; /* Set of acceptable names */
unsigned int hostflags; /* Flags to control matching features */
char *peername; /* Matching hostname in peer certificate */
char *email; /* If not NULL email address to match */
size_t emaillen;
unsigned char *ip; /* If not NULL IP address to match */
size_t iplen; /* Length of IP address */
};
/* No error callback if depth < 0 */
int x509_check_cert_time(X509_STORE_CTX *ctx, X509 *x, int depth);
/* a sequence of these are used */
struct x509_attributes_st {
ASN1_OBJECT *object;
STACK_OF(ASN1_TYPE) *set;
};
struct X509_extension_st {
ASN1_OBJECT *object;
ASN1_BOOLEAN critical;
ASN1_OCTET_STRING value;
};
/*
* Method to handle CRL access. In general a CRL could be very large (several
* Mb) and can consume large amounts of resources if stored in memory by
* multiple processes. This method allows general CRL operations to be
* redirected to more efficient callbacks: for example a CRL entry database.
*/
#define X509_CRL_METHOD_DYNAMIC 1
struct x509_crl_method_st {
int flags;
int (*crl_init) (X509_CRL *crl);
int (*crl_free) (X509_CRL *crl);
int (*crl_lookup) (X509_CRL *crl, X509_REVOKED **ret,
ASN1_INTEGER *ser, X509_NAME *issuer);
int (*crl_verify) (X509_CRL *crl, EVP_PKEY *pk);
};
struct x509_lookup_method_st {
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, X509_LOOKUP_TYPE type,
X509_NAME *name, X509_OBJECT *ret);
int (*get_by_issuer_serial) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
X509_NAME *name, ASN1_INTEGER *serial,
X509_OBJECT *ret);
int (*get_by_fingerprint) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const unsigned char *bytes, int len,
X509_OBJECT *ret);
int (*get_by_alias) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
const char *str, int len, X509_OBJECT *ret);
};
/* 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 */
void *method_data; /* method data */
X509_STORE *store_ctx; /* who owns us */
};
/*
* 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);
/* Check policy status of the chain */
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);
CRYPTO_EX_DATA ex_data;
CRYPTO_REF_COUNT references;
CRYPTO_RWLOCK *lock;
};
typedef struct lookup_dir_hashes_st BY_DIR_HASH;
typedef struct lookup_dir_entry_st BY_DIR_ENTRY;
DEFINE_STACK_OF(BY_DIR_HASH)
DEFINE_STACK_OF(BY_DIR_ENTRY)
typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
DEFINE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
void x509_set_signature_info(X509_SIG_INFO *siginf, const X509_ALGOR *alg,
const ASN1_STRING *sig);
int x509_likely_issued(X509 *issuer, X509 *subject);
int x509_signing_allowed(const X509 *issuer, const X509 *subject);
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