1 /* Extract X.509 certificate in DER form from 1 /* Extract X.509 certificate in DER form from PKCS#11 or PEM.
2 * 2 *
3 * Copyright © 2014-2015 Red Hat, Inc. All Ri 3 * Copyright © 2014-2015 Red Hat, Inc. All Rights Reserved.
4 * Copyright © 2015 Intel Corporation. 4 * Copyright © 2015 Intel Corporation.
5 * 5 *
6 * Authors: David Howells <dhowells@redhat.com 6 * Authors: David Howells <dhowells@redhat.com>
7 * David Woodhouse <dwmw2@infradead.o 7 * David Woodhouse <dwmw2@infradead.org>
8 * 8 *
9 * This program is free software; you can redi 9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser 10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundatio 11 * as published by the Free Software Foundation; either version 2.1
12 * of the licence, or (at your option) any lat 12 * of the licence, or (at your option) any later version.
13 */ 13 */
14 #define _GNU_SOURCE 14 #define _GNU_SOURCE
15 #include <stdio.h> 15 #include <stdio.h>
16 #include <stdlib.h> 16 #include <stdlib.h>
17 #include <stdint.h> 17 #include <stdint.h>
18 #include <stdbool.h> 18 #include <stdbool.h>
19 #include <string.h> 19 #include <string.h>
20 #include <err.h> 20 #include <err.h>
21 #include <openssl/bio.h> 21 #include <openssl/bio.h>
22 #include <openssl/pem.h> 22 #include <openssl/pem.h>
23 #include <openssl/err.h> 23 #include <openssl/err.h>
24 #include <openssl/engine.h> 24 #include <openssl/engine.h>
25 25
26 /* <<
27 * OpenSSL 3.0 deprecates the OpenSSL's ENGINE <<
28 * <<
29 * Remove this if/when that API is no longer u <<
30 */ <<
31 #pragma GCC diagnostic ignored "-Wdeprecated-d <<
32 <<
33 #define PKEY_ID_PKCS7 2 26 #define PKEY_ID_PKCS7 2
34 27
35 static __attribute__((noreturn)) 28 static __attribute__((noreturn))
36 void format(void) 29 void format(void)
37 { 30 {
38 fprintf(stderr, 31 fprintf(stderr,
39 "Usage: extract-cert <source> 32 "Usage: extract-cert <source> <dest>\n");
40 exit(2); 33 exit(2);
41 } 34 }
42 35
43 static void display_openssl_errors(int l) 36 static void display_openssl_errors(int l)
44 { 37 {
45 const char *file; 38 const char *file;
46 char buf[120]; 39 char buf[120];
47 int e, line; 40 int e, line;
48 41
49 if (ERR_peek_error() == 0) 42 if (ERR_peek_error() == 0)
50 return; 43 return;
51 fprintf(stderr, "At main.c:%d:\n", l); 44 fprintf(stderr, "At main.c:%d:\n", l);
52 45
53 while ((e = ERR_get_error_line(&file, 46 while ((e = ERR_get_error_line(&file, &line))) {
54 ERR_error_string(e, buf); 47 ERR_error_string(e, buf);
55 fprintf(stderr, "- SSL %s: %s: 48 fprintf(stderr, "- SSL %s: %s:%d\n", buf, file, line);
56 } 49 }
57 } 50 }
58 51
59 static void drain_openssl_errors(void) 52 static void drain_openssl_errors(void)
60 { 53 {
61 const char *file; 54 const char *file;
62 int line; 55 int line;
63 56
64 if (ERR_peek_error() == 0) 57 if (ERR_peek_error() == 0)
65 return; 58 return;
66 while (ERR_get_error_line(&file, &line 59 while (ERR_get_error_line(&file, &line)) {}
67 } 60 }
68 61
69 #define ERR(cond, fmt, ...) 62 #define ERR(cond, fmt, ...) \
70 do { 63 do { \
71 bool __cond = (cond); 64 bool __cond = (cond); \
72 display_openssl_errors(__LINE_ 65 display_openssl_errors(__LINE__); \
73 if (__cond) { 66 if (__cond) { \
74 err(1, fmt, ## __VA_AR 67 err(1, fmt, ## __VA_ARGS__); \
75 } 68 } \
76 } while(0) 69 } while(0)
77 70
78 static const char *key_pass; 71 static const char *key_pass;
79 static BIO *wb; 72 static BIO *wb;
80 static char *cert_dst; 73 static char *cert_dst;
81 static bool verbose; !! 74 static int kbuild_verbose;
82 75
83 static void write_cert(X509 *x509) 76 static void write_cert(X509 *x509)
84 { 77 {
85 char buf[200]; 78 char buf[200];
86 79
87 if (!wb) { 80 if (!wb) {
88 wb = BIO_new_file(cert_dst, "w 81 wb = BIO_new_file(cert_dst, "wb");
89 ERR(!wb, "%s", cert_dst); 82 ERR(!wb, "%s", cert_dst);
90 } 83 }
91 X509_NAME_oneline(X509_get_subject_nam 84 X509_NAME_oneline(X509_get_subject_name(x509), buf, sizeof(buf));
92 ERR(!i2d_X509_bio(wb, x509), "%s", cer 85 ERR(!i2d_X509_bio(wb, x509), "%s", cert_dst);
93 if (verbose) !! 86 if (kbuild_verbose)
94 fprintf(stderr, "Extracted cer 87 fprintf(stderr, "Extracted cert: %s\n", buf);
95 } 88 }
96 89
97 int main(int argc, char **argv) 90 int main(int argc, char **argv)
98 { 91 {
99 char *cert_src; 92 char *cert_src;
100 char *verbose_env; <<
101 93
102 OpenSSL_add_all_algorithms(); 94 OpenSSL_add_all_algorithms();
103 ERR_load_crypto_strings(); 95 ERR_load_crypto_strings();
104 ERR_clear_error(); 96 ERR_clear_error();
105 97
106 verbose_env = getenv("KBUILD_VERBOSE") !! 98 kbuild_verbose = atoi(getenv("KBUILD_VERBOSE")?:"");
107 if (verbose_env && strchr(verbose_env, <<
108 verbose = true; <<
109 99
110 key_pass = getenv("KBUILD_SIGN_PIN"); 100 key_pass = getenv("KBUILD_SIGN_PIN");
111 101
112 if (argc != 3) 102 if (argc != 3)
113 format(); 103 format();
114 104
115 cert_src = argv[1]; 105 cert_src = argv[1];
116 cert_dst = argv[2]; 106 cert_dst = argv[2];
117 107
118 if (!cert_src[0]) { 108 if (!cert_src[0]) {
119 /* Invoked with no input; crea 109 /* Invoked with no input; create empty file */
120 FILE *f = fopen(cert_dst, "wb" 110 FILE *f = fopen(cert_dst, "wb");
121 ERR(!f, "%s", cert_dst); 111 ERR(!f, "%s", cert_dst);
122 fclose(f); 112 fclose(f);
123 exit(0); 113 exit(0);
124 } else if (!strncmp(cert_src, "pkcs11: 114 } else if (!strncmp(cert_src, "pkcs11:", 7)) {
125 ENGINE *e; 115 ENGINE *e;
126 struct { 116 struct {
127 const char *cert_id; 117 const char *cert_id;
128 X509 *cert; 118 X509 *cert;
129 } parms; 119 } parms;
130 120
131 parms.cert_id = cert_src; 121 parms.cert_id = cert_src;
132 parms.cert = NULL; 122 parms.cert = NULL;
133 123
134 ENGINE_load_builtin_engines(); 124 ENGINE_load_builtin_engines();
135 drain_openssl_errors(); 125 drain_openssl_errors();
136 e = ENGINE_by_id("pkcs11"); 126 e = ENGINE_by_id("pkcs11");
137 ERR(!e, "Load PKCS#11 ENGINE") 127 ERR(!e, "Load PKCS#11 ENGINE");
138 if (ENGINE_init(e)) 128 if (ENGINE_init(e))
139 drain_openssl_errors() 129 drain_openssl_errors();
140 else 130 else
141 ERR(1, "ENGINE_init"); 131 ERR(1, "ENGINE_init");
142 if (key_pass) 132 if (key_pass)
143 ERR(!ENGINE_ctrl_cmd_s 133 ERR(!ENGINE_ctrl_cmd_string(e, "PIN", key_pass, 0), "Set PKCS#11 PIN");
144 ENGINE_ctrl_cmd(e, "LOAD_CERT_ 134 ENGINE_ctrl_cmd(e, "LOAD_CERT_CTRL", 0, &parms, NULL, 1);
145 ERR(!parms.cert, "Get X.509 fr 135 ERR(!parms.cert, "Get X.509 from PKCS#11");
146 write_cert(parms.cert); 136 write_cert(parms.cert);
147 } else { 137 } else {
148 BIO *b; 138 BIO *b;
149 X509 *x509; 139 X509 *x509;
150 140
151 b = BIO_new_file(cert_src, "rb 141 b = BIO_new_file(cert_src, "rb");
152 ERR(!b, "%s", cert_src); 142 ERR(!b, "%s", cert_src);
153 143
154 while (1) { 144 while (1) {
155 x509 = PEM_read_bio_X5 145 x509 = PEM_read_bio_X509(b, NULL, NULL, NULL);
156 if (wb && !x509) { 146 if (wb && !x509) {
157 unsigned long 147 unsigned long err = ERR_peek_last_error();
158 if (ERR_GET_LI 148 if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
159 ERR_GET_RE 149 ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
160 ERR_cl 150 ERR_clear_error();
161 break; 151 break;
162 } 152 }
163 } 153 }
164 ERR(!x509, "%s", cert_ 154 ERR(!x509, "%s", cert_src);
165 write_cert(x509); 155 write_cert(x509);
166 } 156 }
167 } 157 }
168 158
169 BIO_free(wb); 159 BIO_free(wb);
170 160
171 return 0; 161 return 0;
172 } 162 }
173 163
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