[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 X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
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| 21 | {
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| 22 | return sk_X509_ATTRIBUTE_num(x);
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| 23 | }
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| 24 |
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| 25 | int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
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| 26 | int lastpos)
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| 27 | {
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| 28 | const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
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| 29 |
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| 30 | if (obj == NULL)
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| 31 | return (-2);
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| 32 | return (X509at_get_attr_by_OBJ(x, obj, lastpos));
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| 33 | }
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| 34 |
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| 35 | int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
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| 36 | const ASN1_OBJECT *obj, int lastpos)
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| 37 | {
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| 38 | int n;
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| 39 | X509_ATTRIBUTE *ex;
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| 40 |
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| 41 | if (sk == NULL)
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| 42 | return (-1);
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| 43 | lastpos++;
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| 44 | if (lastpos < 0)
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| 45 | lastpos = 0;
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| 46 | n = sk_X509_ATTRIBUTE_num(sk);
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| 47 | for (; lastpos < n; lastpos++) {
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| 48 | ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
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| 49 | if (OBJ_cmp(ex->object, obj) == 0)
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| 50 | return (lastpos);
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| 51 | }
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| 52 | return (-1);
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| 53 | }
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| 54 |
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| 55 | X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
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| 56 | {
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| 57 | if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
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| 58 | return NULL;
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| 59 | else
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| 60 | return sk_X509_ATTRIBUTE_value(x, loc);
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| 61 | }
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| 62 |
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| 63 | X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
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| 64 | {
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| 65 | X509_ATTRIBUTE *ret;
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| 66 |
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| 67 | if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)
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| 68 | return (NULL);
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| 69 | ret = sk_X509_ATTRIBUTE_delete(x, loc);
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| 70 | return (ret);
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| 71 | }
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| 72 |
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| 73 | STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
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| 74 | X509_ATTRIBUTE *attr)
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| 75 | {
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| 76 | X509_ATTRIBUTE *new_attr = NULL;
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| 77 | STACK_OF(X509_ATTRIBUTE) *sk = NULL;
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| 78 |
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| 79 | if (x == NULL) {
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| 80 | X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_PASSED_NULL_PARAMETER);
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| 81 | goto err2;
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| 82 | }
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| 83 |
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| 84 | if (*x == NULL) {
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| 85 | if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
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| 86 | goto err;
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| 87 | } else
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| 88 | sk = *x;
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| 89 |
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| 90 | if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
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| 91 | goto err2;
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| 92 | if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
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| 93 | goto err;
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| 94 | if (*x == NULL)
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| 95 | *x = sk;
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| 96 | return (sk);
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| 97 | err:
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| 98 | X509err(X509_F_X509AT_ADD1_ATTR, ERR_R_MALLOC_FAILURE);
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| 99 | err2:
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| 100 | X509_ATTRIBUTE_free(new_attr);
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| 101 | sk_X509_ATTRIBUTE_free(sk);
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| 102 | return (NULL);
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| 103 | }
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| 104 |
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| 105 | STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
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| 106 | **x, const ASN1_OBJECT *obj,
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| 107 | int type,
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| 108 | const unsigned char *bytes,
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| 109 | int len)
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| 110 | {
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| 111 | X509_ATTRIBUTE *attr;
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| 112 | STACK_OF(X509_ATTRIBUTE) *ret;
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| 113 | attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
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| 114 | if (!attr)
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| 115 | return 0;
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| 116 | ret = X509at_add1_attr(x, attr);
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| 117 | X509_ATTRIBUTE_free(attr);
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| 118 | return ret;
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| 119 | }
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| 120 |
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| 121 | STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
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| 122 | **x, int nid, int type,
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| 123 | const unsigned char *bytes,
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| 124 | int len)
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| 125 | {
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| 126 | X509_ATTRIBUTE *attr;
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| 127 | STACK_OF(X509_ATTRIBUTE) *ret;
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| 128 | attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
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| 129 | if (!attr)
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| 130 | return 0;
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| 131 | ret = X509at_add1_attr(x, attr);
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| 132 | X509_ATTRIBUTE_free(attr);
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| 133 | return ret;
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| 134 | }
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| 135 |
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| 136 | STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
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| 137 | **x, const char *attrname,
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| 138 | int type,
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| 139 | const unsigned char *bytes,
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| 140 | int len)
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| 141 | {
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| 142 | X509_ATTRIBUTE *attr;
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| 143 | STACK_OF(X509_ATTRIBUTE) *ret;
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| 144 | attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
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| 145 | if (!attr)
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| 146 | return 0;
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| 147 | ret = X509at_add1_attr(x, attr);
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| 148 | X509_ATTRIBUTE_free(attr);
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| 149 | return ret;
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| 150 | }
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| 151 |
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| 152 | void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
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| 153 | const ASN1_OBJECT *obj, int lastpos, int type)
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| 154 | {
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| 155 | int i;
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| 156 | X509_ATTRIBUTE *at;
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| 157 | i = X509at_get_attr_by_OBJ(x, obj, lastpos);
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| 158 | if (i == -1)
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| 159 | return NULL;
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| 160 | if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
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| 161 | return NULL;
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| 162 | at = X509at_get_attr(x, i);
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| 163 | if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
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| 164 | return NULL;
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| 165 | return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
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| 166 | }
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| 167 |
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| 168 | X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
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| 169 | int atrtype, const void *data,
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| 170 | int len)
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| 171 | {
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| 172 | ASN1_OBJECT *obj;
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| 173 | X509_ATTRIBUTE *ret;
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| 174 |
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| 175 | obj = OBJ_nid2obj(nid);
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| 176 | if (obj == NULL) {
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| 177 | X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID, X509_R_UNKNOWN_NID);
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| 178 | return (NULL);
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| 179 | }
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| 180 | ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
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| 181 | if (ret == NULL)
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| 182 | ASN1_OBJECT_free(obj);
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| 183 | return (ret);
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| 184 | }
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| 185 |
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| 186 | X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
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| 187 | const ASN1_OBJECT *obj,
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| 188 | int atrtype, const void *data,
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| 189 | int len)
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| 190 | {
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| 191 | X509_ATTRIBUTE *ret;
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| 192 |
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| 193 | if ((attr == NULL) || (*attr == NULL)) {
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| 194 | if ((ret = X509_ATTRIBUTE_new()) == NULL) {
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| 195 | X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,
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| 196 | ERR_R_MALLOC_FAILURE);
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| 197 | return (NULL);
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| 198 | }
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| 199 | } else
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| 200 | ret = *attr;
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| 201 |
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| 202 | if (!X509_ATTRIBUTE_set1_object(ret, obj))
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| 203 | goto err;
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| 204 | if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
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| 205 | goto err;
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| 206 |
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| 207 | if ((attr != NULL) && (*attr == NULL))
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| 208 | *attr = ret;
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| 209 | return (ret);
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| 210 | err:
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| 211 | if ((attr == NULL) || (ret != *attr))
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| 212 | X509_ATTRIBUTE_free(ret);
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| 213 | return (NULL);
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| 214 | }
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| 215 |
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| 216 | X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
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| 217 | const char *atrname, int type,
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| 218 | const unsigned char *bytes,
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| 219 | int len)
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| 220 | {
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| 221 | ASN1_OBJECT *obj;
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| 222 | X509_ATTRIBUTE *nattr;
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| 223 |
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| 224 | obj = OBJ_txt2obj(atrname, 0);
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| 225 | if (obj == NULL) {
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| 226 | X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,
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| 227 | X509_R_INVALID_FIELD_NAME);
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| 228 | ERR_add_error_data(2, "name=", atrname);
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| 229 | return (NULL);
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| 230 | }
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| 231 | nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
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| 232 | ASN1_OBJECT_free(obj);
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| 233 | return nattr;
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| 234 | }
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| 235 |
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| 236 | int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
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| 237 | {
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| 238 | if ((attr == NULL) || (obj == NULL))
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| 239 | return (0);
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| 240 | ASN1_OBJECT_free(attr->object);
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| 241 | attr->object = OBJ_dup(obj);
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| 242 | return attr->object != NULL;
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| 243 | }
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| 244 |
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| 245 | int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
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| 246 | const void *data, int len)
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| 247 | {
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| 248 | ASN1_TYPE *ttmp = NULL;
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| 249 | ASN1_STRING *stmp = NULL;
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| 250 | int atype = 0;
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| 251 | if (!attr)
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| 252 | return 0;
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| 253 | if (attrtype & MBSTRING_FLAG) {
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| 254 | stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
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| 255 | OBJ_obj2nid(attr->object));
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| 256 | if (!stmp) {
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| 257 | X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);
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| 258 | return 0;
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| 259 | }
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| 260 | atype = stmp->type;
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| 261 | } else if (len != -1) {
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| 262 | if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL)
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| 263 | goto err;
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| 264 | if (!ASN1_STRING_set(stmp, data, len))
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| 265 | goto err;
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| 266 | atype = attrtype;
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| 267 | }
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| 268 | /*
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| 269 | * This is a bit naughty because the attribute should really have at
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| 270 | * least one value but some types use and zero length SET and require
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| 271 | * this.
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| 272 | */
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| 273 | if (attrtype == 0) {
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| 274 | ASN1_STRING_free(stmp);
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| 275 | return 1;
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| 276 | }
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| 277 | if ((ttmp = ASN1_TYPE_new()) == NULL)
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| 278 | goto err;
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| 279 | if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
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| 280 | if (!ASN1_TYPE_set1(ttmp, attrtype, data))
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| 281 | goto err;
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| 282 | } else {
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| 283 | ASN1_TYPE_set(ttmp, atype, stmp);
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| 284 | stmp = NULL;
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| 285 | }
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| 286 | if (!sk_ASN1_TYPE_push(attr->set, ttmp))
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| 287 | goto err;
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| 288 | return 1;
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| 289 | err:
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| 290 | X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);
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| 291 | ASN1_TYPE_free(ttmp);
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| 292 | ASN1_STRING_free(stmp);
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| 293 | return 0;
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| 294 | }
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| 295 |
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| 296 | int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
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| 297 | {
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| 298 | if (attr == NULL)
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| 299 | return 0;
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| 300 | return sk_ASN1_TYPE_num(attr->set);
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| 301 | }
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| 302 |
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| 303 | ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
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| 304 | {
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| 305 | if (attr == NULL)
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| 306 | return (NULL);
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| 307 | return (attr->object);
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| 308 | }
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| 309 |
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| 310 | void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
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| 311 | int atrtype, void *data)
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| 312 | {
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| 313 | ASN1_TYPE *ttmp;
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| 314 | ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
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| 315 | if (!ttmp)
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| 316 | return NULL;
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| 317 | if (atrtype != ASN1_TYPE_get(ttmp)) {
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| 318 | X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);
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| 319 | return NULL;
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| 320 | }
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| 321 | return ttmp->value.ptr;
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| 322 | }
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| 323 |
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| 324 | ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
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| 325 | {
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| 326 | if (attr == NULL)
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| 327 | return NULL;
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| 328 | return sk_ASN1_TYPE_value(attr->set, idx);
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| 329 | }
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