1 /*- 2 * Copyright (c) 2019 Stormshield. 3 * Copyright (c) 2019 Semihalf. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 20 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 22 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 23 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 * POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 #define NEED_BRSSL_H 30 #include "../libsecureboot-priv.h" 31 #include <brssl.h> 32 33 void 34 ve_efi_init(void) 35 { 36 br_x509_certificate *xcs; 37 hash_data *digests; 38 size_t num; 39 int result; 40 static int once = 0; 41 42 if (once > 0) 43 return; 44 45 once = 1; 46 47 result = efi_secure_boot_enabled(); 48 if (result <= 0) 49 return; 50 51 xcs = efi_get_trusted_certs(&num); 52 if (num > 0 && xcs != NULL) { 53 num = ve_trust_anchors_add(xcs, num); 54 free_certificates(xcs, num); 55 } 56 xcs = efi_get_forbidden_certs(&num); 57 if (num > 0 && xcs != NULL) { 58 num = ve_forbidden_anchors_add(xcs, num); 59 free_certificates(xcs, num); 60 } 61 digests = efi_get_forbidden_digests(&num); 62 if (num > 0 && digests != NULL) { 63 ve_forbidden_digest_add(digests, num); 64 /* 65 * Don't free the buffors for digests, 66 * since they are shallow copied. 67 */ 68 xfree(digests); 69 } 70 71 return; 72 } 73