1/*
2 * Copyright 2014-2018 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/*
13 * This structure holds all parameters associated with a verify operation by
14 * including an X509_VERIFY_PARAM structure in related structures the
15 * parameters used can be customized
16 */
17
18struct X509_VERIFY_PARAM_st {
19 char *name;
20 time_t check_time; /* Time to use */
21 uint32_t inh_flags; /* Inheritance flags */
22 unsigned long flags; /* Various verify flags */
23 int purpose; /* purpose to check untrusted certificates */
24 int trust; /* trust setting to check */
25 int depth; /* Verify depth */
26 int auth_level; /* Security level for chain verification */
27 STACK_OF(ASN1_OBJECT) *policies; /* Permissible policies */
28 /* Peer identity details */
29 STACK_OF(OPENSSL_STRING) *hosts; /* Set of acceptable names */
30 unsigned int hostflags; /* Flags to control matching features */
31 char *peername; /* Matching hostname in peer certificate */
32 char *email; /* If not NULL email address to match */
33 size_t emaillen;
34 unsigned char *ip; /* If not NULL IP address to match */
35 size_t iplen; /* Length of IP address */
36};
37
38/* No error callback if depth < 0 */
39int x509_check_cert_time(X509_STORE_CTX *ctx, X509 *x, int depth);
40
41/* a sequence of these are used */
42struct x509_attributes_st {
43 ASN1_OBJECT *object;
44 STACK_OF(ASN1_TYPE) *set;
45};
46
47struct X509_extension_st {
48 ASN1_OBJECT *object;
49 ASN1_BOOLEAN critical;
50 ASN1_OCTET_STRING value;
51};
52
53/*
54 * Method to handle CRL access. In general a CRL could be very large (several
55 * Mb) and can consume large amounts of resources if stored in memory by
56 * multiple processes. This method allows general CRL operations to be
57 * redirected to more efficient callbacks: for example a CRL entry database.
58 */
59
60#define X509_CRL_METHOD_DYNAMIC 1
61
62struct x509_crl_method_st {
63 int flags;
64 int (*crl_init) (X509_CRL *crl);
65 int (*crl_free) (X509_CRL *crl);
66 int (*crl_lookup) (X509_CRL *crl, X509_REVOKED **ret,
67 ASN1_INTEGER *ser, X509_NAME *issuer);
68 int (*crl_verify) (X509_CRL *crl, EVP_PKEY *pk);
69};
70
71struct x509_lookup_method_st {
72 char *name;
73 int (*new_item) (X509_LOOKUP *ctx);
74 void (*free) (X509_LOOKUP *ctx);
75 int (*init) (X509_LOOKUP *ctx);
76 int (*shutdown) (X509_LOOKUP *ctx);
77 int (*ctrl) (X509_LOOKUP *ctx, int cmd, const char *argc, long argl,
78 char **ret);
79 int (*get_by_subject) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
80 X509_NAME *name, X509_OBJECT *ret);
81 int (*get_by_issuer_serial) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
82 X509_NAME *name, ASN1_INTEGER *serial,
83 X509_OBJECT *ret);
84 int (*get_by_fingerprint) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
85 const unsigned char *bytes, int len,
86 X509_OBJECT *ret);
87 int (*get_by_alias) (X509_LOOKUP *ctx, X509_LOOKUP_TYPE type,
88 const char *str, int len, X509_OBJECT *ret);
89};
90
91/* This is the functions plus an instance of the local variables. */
92struct x509_lookup_st {
93 int init; /* have we been started */
94 int skip; /* don't use us. */
95 X509_LOOKUP_METHOD *method; /* the functions */
96 void *method_data; /* method data */
97 X509_STORE *store_ctx; /* who owns us */
98};
99
100/*
101 * This is used to hold everything. It is used for all certificate
102 * validation. Once we have a certificate chain, the 'verify' function is
103 * then called to actually check the cert chain.
104 */
105struct x509_store_st {
106 /* The following is a cache of trusted certs */
107 int cache; /* if true, stash any hits */
108 STACK_OF(X509_OBJECT) *objs; /* Cache of all objects */
109 /* These are external lookup methods */
110 STACK_OF(X509_LOOKUP) *get_cert_methods;
111 X509_VERIFY_PARAM *param;
112 /* Callbacks for various operations */
113 /* called to verify a certificate */
114 int (*verify) (X509_STORE_CTX *ctx);
115 /* error callback */
116 int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
117 /* get issuers cert from ctx */
118 int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
119 /* check issued */
120 int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
121 /* Check revocation status of chain */
122 int (*check_revocation) (X509_STORE_CTX *ctx);
123 /* retrieve CRL */
124 int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
125 /* Check CRL validity */
126 int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
127 /* Check certificate against CRL */
128 int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
129 /* Check policy status of the chain */
130 int (*check_policy) (X509_STORE_CTX *ctx);
131 STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx, X509_NAME *nm);
132 STACK_OF(X509_CRL) *(*lookup_crls) (X509_STORE_CTX *ctx, X509_NAME *nm);
133 int (*cleanup) (X509_STORE_CTX *ctx);
134 CRYPTO_EX_DATA ex_data;
135 CRYPTO_REF_COUNT references;
136 CRYPTO_RWLOCK *lock;
137};
138
139typedef struct lookup_dir_hashes_st BY_DIR_HASH;
140typedef struct lookup_dir_entry_st BY_DIR_ENTRY;
141DEFINE_STACK_OF(BY_DIR_HASH)
142DEFINE_STACK_OF(BY_DIR_ENTRY)
143typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
144DEFINE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
145
146void x509_set_signature_info(X509_SIG_INFO *siginf, const X509_ALGOR *alg,
147 const ASN1_STRING *sig);
148