xref: /openssl/crypto/x509/v3_pmaps.c (revision e077455e)
1 /*
2  * Copyright 2003-2021 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 <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/asn1t.h>
13 #include <openssl/conf.h>
14 #include <openssl/x509v3.h>
15 #include "ext_dat.h"
16 
17 static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,
18                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
19 static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD
20                                                  *method, void *pmps, STACK_OF(CONF_VALUE)
21                                                  *extlist);
22 
23 const X509V3_EXT_METHOD ossl_v3_policy_mappings = {
24     NID_policy_mappings, 0,
25     ASN1_ITEM_ref(POLICY_MAPPINGS),
26     0, 0, 0, 0,
27     0, 0,
28     i2v_POLICY_MAPPINGS,
29     v2i_POLICY_MAPPINGS,
30     0, 0,
31     NULL
32 };
33 
34 ASN1_SEQUENCE(POLICY_MAPPING) = {
35         ASN1_SIMPLE(POLICY_MAPPING, issuerDomainPolicy, ASN1_OBJECT),
36         ASN1_SIMPLE(POLICY_MAPPING, subjectDomainPolicy, ASN1_OBJECT)
37 } ASN1_SEQUENCE_END(POLICY_MAPPING)
38 
39 ASN1_ITEM_TEMPLATE(POLICY_MAPPINGS) =
40         ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, POLICY_MAPPINGS,
41                                                                 POLICY_MAPPING)
42 ASN1_ITEM_TEMPLATE_END(POLICY_MAPPINGS)
43 
44 IMPLEMENT_ASN1_ALLOC_FUNCTIONS(POLICY_MAPPING)
45 
46 static STACK_OF(CONF_VALUE) *i2v_POLICY_MAPPINGS(const X509V3_EXT_METHOD
47                                                  *method, void *a, STACK_OF(CONF_VALUE)
48                                                  *ext_list)
49 {
50     POLICY_MAPPINGS *pmaps = a;
51     POLICY_MAPPING *pmap;
52     int i;
53     char obj_tmp1[80];
54     char obj_tmp2[80];
55 
56     for (i = 0; i < sk_POLICY_MAPPING_num(pmaps); i++) {
57         pmap = sk_POLICY_MAPPING_value(pmaps, i);
58         i2t_ASN1_OBJECT(obj_tmp1, 80, pmap->issuerDomainPolicy);
59         i2t_ASN1_OBJECT(obj_tmp2, 80, pmap->subjectDomainPolicy);
60         X509V3_add_value(obj_tmp1, obj_tmp2, &ext_list);
61     }
62     return ext_list;
63 }
64 
v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD * method,X509V3_CTX * ctx,STACK_OF (CONF_VALUE)* nval)65 static void *v2i_POLICY_MAPPINGS(const X509V3_EXT_METHOD *method,
66                                  X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
67 {
68     POLICY_MAPPING *pmap = NULL;
69     ASN1_OBJECT *obj1 = NULL, *obj2 = NULL;
70     CONF_VALUE *val;
71     POLICY_MAPPINGS *pmaps;
72     const int num = sk_CONF_VALUE_num(nval);
73     int i;
74 
75     if ((pmaps = sk_POLICY_MAPPING_new_reserve(NULL, num)) == NULL) {
76         ERR_raise(ERR_LIB_X509V3, ERR_R_CRYPTO_LIB);
77         return NULL;
78     }
79 
80     for (i = 0; i < num; i++) {
81         val = sk_CONF_VALUE_value(nval, i);
82         if (!val->value || !val->name) {
83             ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER,
84                            "%s", val->name);
85             goto err;
86         }
87         obj1 = OBJ_txt2obj(val->name, 0);
88         obj2 = OBJ_txt2obj(val->value, 0);
89         if (!obj1 || !obj2) {
90             ERR_raise_data(ERR_LIB_X509V3, X509V3_R_INVALID_OBJECT_IDENTIFIER,
91                            "%s", val->name);
92             goto err;
93         }
94         pmap = POLICY_MAPPING_new();
95         if (pmap == NULL) {
96             ERR_raise(ERR_LIB_X509V3, ERR_R_ASN1_LIB);
97             goto err;
98         }
99         pmap->issuerDomainPolicy = obj1;
100         pmap->subjectDomainPolicy = obj2;
101         obj1 = obj2 = NULL;
102         sk_POLICY_MAPPING_push(pmaps, pmap); /* no failure as it was reserved */
103     }
104     return pmaps;
105  err:
106     ASN1_OBJECT_free(obj1);
107     ASN1_OBJECT_free(obj2);
108     sk_POLICY_MAPPING_pop_free(pmaps, POLICY_MAPPING_free);
109     return NULL;
110 }
111