/* Provenance: openssl/openssl ossl_policy_cache_set_mapping (fixed).
 * repo: openssl/openssl
 * commit: 7725e7bfe6f2ce8146b6552b44e0d226be7638e7
 * parent: 9a5c884999a55595e376083b3a165515c8123049
 * commit_url: https://github.com/openssl/openssl/commit/7725e7bfe6f2ce8146b6552b44e0d226be7638e7
 * cve: CVE-2022-3996
 * license: Apache-2.0
 * function: ossl_policy_cache_set_mapping
 * relpath: crypto/x509/pcy_map.c
 */

int ossl_policy_cache_set_mapping(X509 *x, POLICY_MAPPINGS *maps)
{
    POLICY_MAPPING *map;
    X509_POLICY_DATA *data;
    X509_POLICY_CACHE *cache = x->policy_cache;
    int i;
    int ret = 0;
    if (sk_POLICY_MAPPING_num(maps) == 0) {
        ret = -1;
        goto bad_mapping;
    }
    for (i = 0; i < sk_POLICY_MAPPING_num(maps); i++) {
        map = sk_POLICY_MAPPING_value(maps, i);
        /* Reject if map to or from anyPolicy */
        if ((OBJ_obj2nid(map->subjectDomainPolicy) == NID_any_policy)
            || (OBJ_obj2nid(map->issuerDomainPolicy) == NID_any_policy)) {
            ret = -1;
            goto bad_mapping;
        }

        /* Attempt to find matching policy data */
        data = ossl_policy_cache_find_data(cache, map->issuerDomainPolicy);
        /* If we don't have anyPolicy can't map */
        if (data == NULL && !cache->anyPolicy)
            continue;

        /* Create a NODE from anyPolicy */
        if (data == NULL) {
            data = ossl_policy_data_new(NULL, map->issuerDomainPolicy,
                                        cache->anyPolicy->flags
                                        & POLICY_DATA_FLAG_CRITICAL);
            if (data == NULL)
                goto bad_mapping;
            data->qualifier_set = cache->anyPolicy->qualifier_set;
            /*
             * map->issuerDomainPolicy = NULL;
             */
            data->flags |= POLICY_DATA_FLAG_MAPPED_ANY;
            data->flags |= POLICY_DATA_FLAG_SHARED_QUALIFIERS;
            if (!sk_X509_POLICY_DATA_push(cache->data, data)) {
                ossl_policy_data_free(data);
                goto bad_mapping;
            }
        } else
            data->flags |= POLICY_DATA_FLAG_MAPPED;
        if (!sk_ASN1_OBJECT_push(data->expected_policy_set,
                                 map->subjectDomainPolicy))
            goto bad_mapping;
        map->subjectDomainPolicy = NULL;

    }

    ret = 1;
 bad_mapping:
    sk_POLICY_MAPPING_pop_free(maps, POLICY_MAPPING_free);
    return ret;

}