1 /*- 2 * Copyright (c) 2018, Juniper Networks, Inc. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 14 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 15 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 16 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 17 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 19 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 #include <sys/cdefs.h> 26 /** 27 * @file veta.c - add to trust anchors 28 * 29 */ 30 31 #define NEED_BRSSL_H 32 #include "libsecureboot-priv.h" 33 #include <brssl.h> 34 #include <sys/stat.h> 35 #include <dirent.h> 36 37 #ifdef VE_OPENPGP_SUPPORT 38 #include "openpgp/packet.h" 39 #endif 40 41 /** 42 * @brief add trust anchors from a file 43 * 44 * The file might contain X.509 certs 45 * or OpenPGP public key 46 */ 47 static size_t 48 trust_file_add(const char *trust) 49 { 50 br_x509_certificate *xcs; 51 size_t num; 52 53 xcs = read_certificates(trust, &num); 54 if (xcs) { 55 num = ve_trust_anchors_add(xcs, num); 56 } 57 #ifdef VE_OPENPGP_SUPPORT 58 else if (load_key_file(trust)) { 59 num = 1; 60 } 61 #endif 62 return (num); 63 } 64 65 /** 66 * @brief add trust anchors from a directory 67 * 68 * Pass each file in directory to trust_file_add 69 */ 70 static size_t 71 trust_dir_add(const char *trust) 72 { 73 char fbuf[MAXPATHLEN]; 74 DIR *dh; 75 struct dirent *de; 76 struct stat st; 77 ssize_t sz; 78 size_t num; 79 80 if (!(dh = opendir(trust))) 81 return (0); 82 for (num = 0, de = readdir(dh); de; de = readdir(dh)) { 83 if (de->d_name[0] == '.') 84 continue; 85 sz = snprintf(fbuf, sizeof(fbuf), "%s/%s", trust, de->d_name); 86 if (sz >= (ssize_t)sizeof(fbuf)) 87 continue; 88 if (stat(fbuf, &st) < 0 || S_ISDIR(st.st_mode)) 89 continue; 90 num += trust_file_add(fbuf); 91 } 92 closedir(dh); 93 return (num); 94 } 95 96 /** 97 * @brief add trust anchors 98 */ 99 int 100 ve_trust_add(const char *trust) 101 { 102 struct stat st; 103 104 if (stat(trust, &st) < 0) 105 return (-1); 106 if (S_ISDIR(st.st_mode)) 107 return (trust_dir_add(trust)); 108 return (trust_file_add(trust)); 109 } 110