[331] | 1 | /*
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| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include <openssl/stack.h>
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| 12 | #include "internal/cryptlib.h"
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| 13 | #include <openssl/asn1.h>
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| 14 | #include <openssl/objects.h>
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| 15 | #include <openssl/evp.h>
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| 16 | #include <openssl/x509.h>
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| 17 | #include <openssl/x509v3.h>
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| 18 | #include "x509_lcl.h"
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| 19 |
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| 20 | int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x)
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| 21 | {
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| 22 | if (x == NULL)
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| 23 | return (0);
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| 24 | return (sk_X509_EXTENSION_num(x));
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| 25 | }
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| 26 |
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| 27 | int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, int nid,
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| 28 | int lastpos)
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| 29 | {
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| 30 | ASN1_OBJECT *obj;
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| 31 |
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| 32 | obj = OBJ_nid2obj(nid);
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| 33 | if (obj == NULL)
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| 34 | return (-2);
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| 35 | return (X509v3_get_ext_by_OBJ(x, obj, lastpos));
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| 36 | }
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| 37 |
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| 38 | int X509v3_get_ext_by_OBJ(const STACK_OF(X509_EXTENSION) *sk,
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| 39 | const ASN1_OBJECT *obj, int lastpos)
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| 40 | {
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| 41 | int n;
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| 42 | X509_EXTENSION *ex;
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| 43 |
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| 44 | if (sk == NULL)
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| 45 | return (-1);
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| 46 | lastpos++;
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| 47 | if (lastpos < 0)
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| 48 | lastpos = 0;
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| 49 | n = sk_X509_EXTENSION_num(sk);
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| 50 | for (; lastpos < n; lastpos++) {
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| 51 | ex = sk_X509_EXTENSION_value(sk, lastpos);
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| 52 | if (OBJ_cmp(ex->object, obj) == 0)
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| 53 | return (lastpos);
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| 54 | }
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| 55 | return (-1);
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| 56 | }
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| 57 |
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| 58 | int X509v3_get_ext_by_critical(const STACK_OF(X509_EXTENSION) *sk, int crit,
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| 59 | int lastpos)
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| 60 | {
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| 61 | int n;
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| 62 | X509_EXTENSION *ex;
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| 63 |
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| 64 | if (sk == NULL)
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| 65 | return (-1);
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| 66 | lastpos++;
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| 67 | if (lastpos < 0)
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| 68 | lastpos = 0;
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| 69 | n = sk_X509_EXTENSION_num(sk);
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| 70 | for (; lastpos < n; lastpos++) {
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| 71 | ex = sk_X509_EXTENSION_value(sk, lastpos);
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| 72 | if (((ex->critical > 0) && crit) || ((ex->critical <= 0) && !crit))
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| 73 | return (lastpos);
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| 74 | }
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| 75 | return (-1);
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| 76 | }
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| 77 |
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| 78 | X509_EXTENSION *X509v3_get_ext(const STACK_OF(X509_EXTENSION) *x, int loc)
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| 79 | {
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| 80 | if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
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| 81 | return NULL;
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| 82 | else
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| 83 | return sk_X509_EXTENSION_value(x, loc);
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| 84 | }
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| 85 |
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| 86 | X509_EXTENSION *X509v3_delete_ext(STACK_OF(X509_EXTENSION) *x, int loc)
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| 87 | {
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| 88 | X509_EXTENSION *ret;
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| 89 |
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| 90 | if (x == NULL || sk_X509_EXTENSION_num(x) <= loc || loc < 0)
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| 91 | return (NULL);
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| 92 | ret = sk_X509_EXTENSION_delete(x, loc);
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| 93 | return (ret);
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| 94 | }
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| 95 |
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| 96 | STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
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| 97 | X509_EXTENSION *ex, int loc)
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| 98 | {
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| 99 | X509_EXTENSION *new_ex = NULL;
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| 100 | int n;
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| 101 | STACK_OF(X509_EXTENSION) *sk = NULL;
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| 102 |
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| 103 | if (x == NULL) {
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| 104 | X509err(X509_F_X509V3_ADD_EXT, ERR_R_PASSED_NULL_PARAMETER);
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| 105 | goto err2;
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| 106 | }
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| 107 |
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| 108 | if (*x == NULL) {
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| 109 | if ((sk = sk_X509_EXTENSION_new_null()) == NULL)
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| 110 | goto err;
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| 111 | } else
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| 112 | sk = *x;
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| 113 |
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| 114 | n = sk_X509_EXTENSION_num(sk);
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| 115 | if (loc > n)
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| 116 | loc = n;
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| 117 | else if (loc < 0)
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| 118 | loc = n;
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| 119 |
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| 120 | if ((new_ex = X509_EXTENSION_dup(ex)) == NULL)
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| 121 | goto err2;
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| 122 | if (!sk_X509_EXTENSION_insert(sk, new_ex, loc))
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| 123 | goto err;
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| 124 | if (*x == NULL)
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| 125 | *x = sk;
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| 126 | return (sk);
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| 127 | err:
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| 128 | X509err(X509_F_X509V3_ADD_EXT, ERR_R_MALLOC_FAILURE);
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| 129 | err2:
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| 130 | X509_EXTENSION_free(new_ex);
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| 131 | sk_X509_EXTENSION_free(sk);
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| 132 | return (NULL);
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| 133 | }
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| 134 |
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| 135 | X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid,
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| 136 | int crit,
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| 137 | ASN1_OCTET_STRING *data)
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| 138 | {
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| 139 | ASN1_OBJECT *obj;
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| 140 | X509_EXTENSION *ret;
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| 141 |
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| 142 | obj = OBJ_nid2obj(nid);
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| 143 | if (obj == NULL) {
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| 144 | X509err(X509_F_X509_EXTENSION_CREATE_BY_NID, X509_R_UNKNOWN_NID);
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| 145 | return (NULL);
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| 146 | }
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| 147 | ret = X509_EXTENSION_create_by_OBJ(ex, obj, crit, data);
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| 148 | if (ret == NULL)
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| 149 | ASN1_OBJECT_free(obj);
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| 150 | return (ret);
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| 151 | }
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| 152 |
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| 153 | X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex,
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| 154 | const ASN1_OBJECT *obj, int crit,
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| 155 | ASN1_OCTET_STRING *data)
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| 156 | {
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| 157 | X509_EXTENSION *ret;
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| 158 |
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| 159 | if ((ex == NULL) || (*ex == NULL)) {
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| 160 | if ((ret = X509_EXTENSION_new()) == NULL) {
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| 161 | X509err(X509_F_X509_EXTENSION_CREATE_BY_OBJ,
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| 162 | ERR_R_MALLOC_FAILURE);
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| 163 | return (NULL);
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| 164 | }
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| 165 | } else
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| 166 | ret = *ex;
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| 167 |
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| 168 | if (!X509_EXTENSION_set_object(ret, obj))
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| 169 | goto err;
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| 170 | if (!X509_EXTENSION_set_critical(ret, crit))
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| 171 | goto err;
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| 172 | if (!X509_EXTENSION_set_data(ret, data))
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| 173 | goto err;
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| 174 |
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| 175 | if ((ex != NULL) && (*ex == NULL))
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| 176 | *ex = ret;
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| 177 | return (ret);
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| 178 | err:
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| 179 | if ((ex == NULL) || (ret != *ex))
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| 180 | X509_EXTENSION_free(ret);
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| 181 | return (NULL);
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| 182 | }
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| 183 |
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| 184 | int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj)
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| 185 | {
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| 186 | if ((ex == NULL) || (obj == NULL))
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| 187 | return (0);
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| 188 | ASN1_OBJECT_free(ex->object);
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| 189 | ex->object = OBJ_dup(obj);
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| 190 | return ex->object != NULL;
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| 191 | }
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| 192 |
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| 193 | int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit)
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| 194 | {
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| 195 | if (ex == NULL)
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| 196 | return (0);
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| 197 | ex->critical = (crit) ? 0xFF : -1;
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| 198 | return (1);
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| 199 | }
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| 200 |
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| 201 | int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data)
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| 202 | {
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| 203 | int i;
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| 204 |
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| 205 | if (ex == NULL)
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| 206 | return (0);
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| 207 | i = ASN1_OCTET_STRING_set(&ex->value, data->data, data->length);
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| 208 | if (!i)
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| 209 | return (0);
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| 210 | return (1);
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| 211 | }
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| 212 |
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| 213 | ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex)
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| 214 | {
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| 215 | if (ex == NULL)
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| 216 | return (NULL);
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| 217 | return (ex->object);
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| 218 | }
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| 219 |
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| 220 | ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ex)
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| 221 | {
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| 222 | if (ex == NULL)
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| 223 | return (NULL);
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| 224 | return &ex->value;
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| 225 | }
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| 226 |
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| 227 | int X509_EXTENSION_get_critical(const X509_EXTENSION *ex)
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| 228 | {
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| 229 | if (ex == NULL)
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| 230 | return (0);
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| 231 | if (ex->critical > 0)
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| 232 | return 1;
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| 233 | return 0;
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| 234 | }
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