crypto/x509/x509_local.h

   1 /*
   2  * Copyright 2014-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include "internal/refcount.h"
  11
  12 #define X509V3_conf_add_error_name_value(val) \
  13     ERR_add_error_data(4, "name=", (val)->name, ", value=", (val)->value)
  14
  15 /*
  16  * This structure holds all parameters associated with a verify operation by
  17  * including an X509_VERIFY_PARAM structure in related structures the
  18  * parameters used can be customized
  19  */
  20
  21 struct X509_VERIFY_PARAM_st {
  22     char *name;
  23     time_t check_time;          /* Time to use */
  24     uint32_t inh_flags;         /* Inheritance flags */
  25     unsigned long flags;        /* Various verify flags */
  26     int purpose;                /* purpose to check untrusted certificates */
  27     int trust;                  /* trust setting to check */
  28     int depth;                  /* Verify depth */
  29     int auth_level;             /* Security level for chain verification */
  30     STACK_OF(ASN1_OBJECT) *policies; /* Permissible policies */
  31     /* Peer identity details */
  32     STACK_OF(OPENSSL_STRING) *hosts; /* Set of acceptable names */
  33     unsigned int hostflags;     /* Flags to control matching features */
  34     char *peername;             /* Matching hostname in peer certificate */
  35     char *email;                /* If not NULL email address to match */
  36     size_t emaillen;
  37     unsigned char *ip;          /* If not NULL IP address to match */
  38     size_t iplen;               /* Length of IP address */
  39 };
  40
  41 /* No error callback if depth < 0 */
  42 int ossl_x509_check_cert_time(X509_STORE_CTX *ctx, X509 *x, int depth);
  43
  44 /* a sequence of these are used */
  45 struct x509_attributes_st {
  46     ASN1_OBJECT *object;
  47     STACK_OF(ASN1_TYPE) *set;
  48 };
  49
  50 struct X509_extension_st {
  51     ASN1_OBJECT *object;
  52     ASN1_BOOLEAN critical;
  53     ASN1_OCTET_STRING value;
  54 };
  55
  56 /*
  57  * Method to handle CRL access. In general a CRL could be very large (several
  58  * Mb) and can consume large amounts of resources if stored in memory by
  59  * multiple processes. This method allows general CRL operations to be
  60  * redirected to more efficient callbacks: for example a CRL entry database.
  61  */
  62
  63 #define X509_CRL_METHOD_DYNAMIC         1
  64
  65 struct x509_crl_method_st {
  66     int flags;
  67     int (*crl_init) (X509_CRL *crl);
  68     int (*crl_free) (X509_CRL *crl);
  69     int (*crl_lookup) (X509_CRL *crl, X509_REVOKED **ret,
  70                        const ASN1_INTEGER *ser, const X509_NAME *issuer);
  71     int (*crl_verify) (X509_CRL *crl, EVP_PKEY *pk);
  72 };
  73
  74 struct x509_lookup_method_st {
  75     char *name;
  76     int (*new_item) (X509_LOOKUP *ctx);
  77     void (*free) (X509_LOOKUP *ctx);
  78     int (*init) (X509_LOOKUP *ctx);
  79     int (*shutdown) (X509_LOOKUP *ctx);
  80     int (*ctrl) (X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
  81                  char **ret);
  82     int (*get_by_subject) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
  83                            const X509_NAME *name, X509_OBJECT *ret);
  84     int (*get_by_issuer_serial) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
  85                                  const X509_NAME *name,
  86                                  const ASN1_INTEGER *serial,
  87                                  X509_OBJECT *ret);
  88     int (*get_by_fingerprint) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
  89                                const unsigned char *bytes, int len,
  90                                X509_OBJECT *ret);
  91     int (*get_by_alias) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
  92                          const char *str, int len, X509_OBJECT *ret);
  93     int (*get_by_subject_ex) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
  94                               const X509_NAME *name, X509_OBJECT *ret,
  95                               OSSL_LIB_CTX *libctx, const char *propq);
  96     int (*ctrl_ex) (X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
  97                     char **ret, OSSL_LIB_CTX *libctx, const char *propq);
  98 };
  99
 100 /* This is the functions plus an instance of the local variables. */
 101 struct x509_lookup_st {
 102     int init;                   /* have we been started */
 103     int skip;                   /* don't use us. */
 104     X509_LOOKUP_METHOD *method; /* the functions */
 105     void *method_data;          /* method data */
 106     X509_STORE *store_ctx;      /* who owns us */
 107 };
 108
 109 /*
 110  * This is used to hold everything.  It is used for all certificate
 111  * validation.  Once we have a certificate chain, the 'verify' function is
 112  * then called to actually check the cert chain.
 113  */
 114 struct x509_store_st {
 115     /* The following is a cache of trusted certs */
 116     int cache;                  /* if true, stash any hits */
 117     STACK_OF(X509_OBJECT) *objs; /* Cache of all objects */
 118     /* These are external lookup methods */
 119     STACK_OF(X509_LOOKUP) *get_cert_methods;
 120     X509_VERIFY_PARAM *param;
 121     /* Callbacks for various operations */
 122     /* called to verify a certificate */
 123     int (*verify) (X509_STORE_CTX *ctx);
 124     /* error callback */
 125     int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
 126     /* get issuers cert from ctx */
 127     int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
 128     /* check issued */
 129     int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
 130     /* Check revocation status of chain */
 131     int (*check_revocation) (X509_STORE_CTX *ctx);
 132     /* retrieve CRL */
 133     int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
 134     /* Check CRL validity */
 135     int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
 136     /* Check certificate against CRL */
 137     int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
 138     /* Check policy status of the chain */
 139     int (*check_policy) (X509_STORE_CTX *ctx);
 140     STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx,
 141                                      const X509_NAME *nm);
 142     /* cannot constify 'ctx' param due to lookup_certs_sk() in x509_vfy.c */
 143     STACK_OF(X509_CRL) *(*lookup_crls) (const X509_STORE_CTX *ctx,
 144                                         const X509_NAME *nm);
 145     int (*cleanup) (X509_STORE_CTX *ctx);
 146     CRYPTO_EX_DATA ex_data;
 147     CRYPTO_REF_COUNT references;
 148     CRYPTO_RWLOCK *lock;
 149 };
 150
 151 typedef struct lookup_dir_hashes_st BY_DIR_HASH;
 152 typedef struct lookup_dir_entry_st BY_DIR_ENTRY;
 153 DEFINE_STACK_OF(BY_DIR_HASH)
 154 DEFINE_STACK_OF(BY_DIR_ENTRY)
 155 typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
 156 DEFINE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
 157
 158 int ossl_x509_likely_issued(X509 *issuer, X509 *subject);
 159 int ossl_x509_signing_allowed(const X509 *issuer, const X509 *subject);