1 /* Extract X.509 certificate in DER form from PKCS#11 or PEM.
3 * Copyright © 2014-2015 Red Hat, Inc. All Rights Reserved.
4 * Copyright © 2015 Intel Corporation.
6 * Authors: David Howells <dhowells@redhat.com>
7 * David Woodhouse <dwmw2@infradead.org>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundation; either version 2.1
12 * of the licence, or (at your option) any later version.
21 #include <openssl/bio.h>
22 #include <openssl/pem.h>
23 #include <openssl/err.h>
24 #include <openssl/engine.h>
26 #define PKEY_ID_PKCS7 2
28 static __attribute__((noreturn))
32 "Usage: scripts/extract-cert <source> <dest>\n");
36 static void display_openssl_errors(int l)
42 if (ERR_peek_error() == 0)
44 fprintf(stderr, "At main.c:%d:\n", l);
46 while ((e = ERR_get_error_line(&file, &line))) {
47 ERR_error_string(e, buf);
48 fprintf(stderr, "- SSL %s: %s:%d\n", buf, file, line);
52 static void drain_openssl_errors(void)
57 if (ERR_peek_error() == 0)
59 while (ERR_get_error_line(&file, &line)) {}
62 #define ERR(cond, fmt, ...) \
64 bool __cond = (cond); \
65 display_openssl_errors(__LINE__); \
67 err(1, fmt, ## __VA_ARGS__); \
71 static const char *key_pass;
73 static char *cert_dst;
74 static int kbuild_verbose;
76 static void write_cert(X509 *x509)
81 wb = BIO_new_file(cert_dst, "wb");
82 ERR(!wb, "%s", cert_dst);
84 X509_NAME_oneline(X509_get_subject_name(x509), buf, sizeof(buf));
85 ERR(!i2d_X509_bio(wb, x509), "%s", cert_dst);
87 fprintf(stderr, "Extracted cert: %s\n", buf);
90 int main(int argc, char **argv)
94 OpenSSL_add_all_algorithms();
95 ERR_load_crypto_strings();
98 kbuild_verbose = atoi(getenv("KBUILD_VERBOSE")?:"0");
100 key_pass = getenv("KBUILD_SIGN_PIN");
109 /* Invoked with no input; create empty file */
110 FILE *f = fopen(cert_dst, "wb");
111 ERR(!f, "%s", cert_dst);
114 } else if (!strncmp(cert_src, "pkcs11:", 7)) {
121 parms.cert_id = cert_src;
124 ENGINE_load_builtin_engines();
125 drain_openssl_errors();
126 e = ENGINE_by_id("pkcs11");
127 ERR(!e, "Load PKCS#11 ENGINE");
129 drain_openssl_errors();
131 ERR(1, "ENGINE_init");
133 ERR(!ENGINE_ctrl_cmd_string(e, "PIN", key_pass, 0), "Set PKCS#11 PIN");
134 ENGINE_ctrl_cmd(e, "LOAD_CERT_CTRL", 0, &parms, NULL, 1);
135 ERR(!parms.cert, "Get X.509 from PKCS#11");
136 write_cert(parms.cert);
141 b = BIO_new_file(cert_src, "rb");
142 ERR(!b, "%s", cert_src);
145 x509 = PEM_read_bio_X509(b, NULL, NULL, NULL);
147 unsigned long err = ERR_peek_last_error();
148 if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
149 ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
154 ERR(!x509, "%s", cert_src);