1 /* 2 * Copyright 1999-2021 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/asn1.h> 13 #include <openssl/asn1t.h> 14 #include <openssl/conf.h> 15 #include <openssl/x509v3.h> 16 #include "ext_dat.h" 17 #include "x509_local.h" 18 19 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, 20 BASIC_CONSTRAINTS *bcons, 21 STACK_OF(CONF_VALUE) 22 *extlist); 23 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, 24 X509V3_CTX *ctx, 25 STACK_OF(CONF_VALUE) *values); 26 27 const X509V3_EXT_METHOD ossl_v3_bcons = { 28 NID_basic_constraints, 0, 29 ASN1_ITEM_ref(BASIC_CONSTRAINTS), 30 0, 0, 0, 0, 31 0, 0, 32 (X509V3_EXT_I2V) i2v_BASIC_CONSTRAINTS, 33 (X509V3_EXT_V2I)v2i_BASIC_CONSTRAINTS, 34 NULL, NULL, 35 NULL 36 }; 37 38 ASN1_SEQUENCE(BASIC_CONSTRAINTS) = { 39 ASN1_OPT(BASIC_CONSTRAINTS, ca, ASN1_FBOOLEAN), 40 ASN1_OPT(BASIC_CONSTRAINTS, pathlen, ASN1_INTEGER) 41 } ASN1_SEQUENCE_END(BASIC_CONSTRAINTS) 42 43 IMPLEMENT_ASN1_FUNCTIONS(BASIC_CONSTRAINTS) 44 45 static STACK_OF(CONF_VALUE) *i2v_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, 46 BASIC_CONSTRAINTS *bcons, 47 STACK_OF(CONF_VALUE) 48 *extlist) 49 { 50 X509V3_add_value_bool("CA", bcons->ca, &extlist); 51 X509V3_add_value_int("pathlen", bcons->pathlen, &extlist); 52 return extlist; 53 } 54 55 static BASIC_CONSTRAINTS *v2i_BASIC_CONSTRAINTS(X509V3_EXT_METHOD *method, 56 X509V3_CTX *ctx, 57 STACK_OF(CONF_VALUE) *values) 58 { 59 BASIC_CONSTRAINTS *bcons = NULL; 60 CONF_VALUE *val; 61 int i; 62 63 if ((bcons = BASIC_CONSTRAINTS_new()) == NULL) { 64 ERR_raise(ERR_LIB_X509V3, ERR_R_MALLOC_FAILURE); 65 return NULL; 66 } 67 for (i = 0; i < sk_CONF_VALUE_num(values); i++) { 68 val = sk_CONF_VALUE_value(values, i); 69 if (strcmp(val->name, "CA") == 0) { 70 if (!X509V3_get_value_bool(val, &bcons->ca)) 71 goto err; 72 } else if (strcmp(val->name, "pathlen") == 0) { 73 if (!X509V3_get_value_int(val, &bcons->pathlen)) 74 goto err; 75 } else { 76 ERR_raise(ERR_LIB_X509V3, X509V3_R_INVALID_NAME); 77 X509V3_conf_add_error_name_value(val); 78 goto err; 79 } 80 } 81 return bcons; 82 err: 83 BASIC_CONSTRAINTS_free(bcons); 84 return NULL; 85 } 86