certs: move scripts/extract-cert to certs/

extract-cert is only used in certs/Makefile.

Move it there and build extract-cert on demand.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

4 files changed, 4 insertions, 172 deletions

diff --git a/scripts/.gitignore b/scripts/.gitignore
index e83c620ef52c..eed308bef604 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 /asn1_compiler
 /bin2c
-/extract-cert
 /insert-sys-cert
 /kallsyms
 /module.lds
diff --git a/scripts/Makefile b/scripts/Makefile
index 9adb6d247818..e198b22dc476 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -3,25 +3,18 @@
 # scripts contains sources for various helper programs used throughout
 # the kernel for the build process.
 
-CRYPTO_LIBS = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
-CRYPTO_CFLAGS = $(shell pkg-config --cflags libcrypto 2> /dev/null)
-
 hostprogs-always-$(CONFIG_BUILD_BIN2C)			+= bin2c
 hostprogs-always-$(CONFIG_KALLSYMS)			+= kallsyms
 hostprogs-always-$(BUILD_C_RECORDMCOUNT)		+= recordmcount
 hostprogs-always-$(CONFIG_BUILDTIME_TABLE_SORT)		+= sorttable
 hostprogs-always-$(CONFIG_ASN1)				+= asn1_compiler
 hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT)		+= sign-file
-hostprogs-always-$(CONFIG_SYSTEM_TRUSTED_KEYRING)	+= extract-cert
 hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE)	+= insert-sys-cert
-hostprogs-always-$(CONFIG_SYSTEM_REVOCATION_LIST)	+= extract-cert
 
 HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
 HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
-HOSTCFLAGS_sign-file.o = $(CRYPTO_CFLAGS)
-HOSTLDLIBS_sign-file = $(CRYPTO_LIBS)
-HOSTCFLAGS_extract-cert.o = $(CRYPTO_CFLAGS)
-HOSTLDLIBS_extract-cert = $(CRYPTO_LIBS)
+HOSTCFLAGS_sign-file.o = $(shell pkg-config --cflags libcrypto 2> /dev/null)
+HOSTLDLIBS_sign-file = $(shell pkg-config --libs libcrypto 2> /dev/null || echo -lcrypto)
 
 ifdef CONFIG_UNWINDER_ORC
 ifeq ($(ARCH),x86_64)
diff --git a/scripts/extract-cert.c b/scripts/extract-cert.c
deleted file mode 100644
index 3bc48c726c41..000000000000
--- a/scripts/extract-cert.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/* Extract X.509 certificate in DER form from PKCS#11 or PEM.
- *
- * Copyright © 2014-2015 Red Hat, Inc. All Rights Reserved.
- * Copyright © 2015      Intel Corporation.
- *
- * Authors: David Howells <dhowells@redhat.com>
- *          David Woodhouse <dwmw2@infradead.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 2.1
- * of the licence, or (at your option) any later version.
- */
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <stdbool.h>
-#include <string.h>
-#include <err.h>
-#include <openssl/bio.h>
-#include <openssl/pem.h>
-#include <openssl/err.h>
-#include <openssl/engine.h>
-
-#define PKEY_ID_PKCS7 2
-
-static __attribute__((noreturn))
-void format(void)
-{
-	fprintf(stderr,
-		"Usage: scripts/extract-cert <source> <dest>\n");
-	exit(2);
-}
-
-static void display_openssl_errors(int l)
-{
-	const char *file;
-	char buf[120];
-	int e, line;
-
-	if (ERR_peek_error() == 0)
-		return;
-	fprintf(stderr, "At main.c:%d:\n", l);
-
-	while ((e = ERR_get_error_line(&file, &line))) {
-		ERR_error_string(e, buf);
-		fprintf(stderr, "- SSL %s: %s:%d\n", buf, file, line);
-	}
-}
-
-static void drain_openssl_errors(void)
-{
-	const char *file;
-	int line;
-
-	if (ERR_peek_error() == 0)
-		return;
-	while (ERR_get_error_line(&file, &line)) {}
-}
-
-#define ERR(cond, fmt, ...)				\
-	do {						\
-		bool __cond = (cond);			\
-		display_openssl_errors(__LINE__);	\
-		if (__cond) {				\
-			err(1, fmt, ## __VA_ARGS__);	\
-		}					\
-	} while(0)
-
-static const char *key_pass;
-static BIO *wb;
-static char *cert_dst;
-static int kbuild_verbose;
-
-static void write_cert(X509 *x509)
-{
-	char buf[200];
-
-	if (!wb) {
-		wb = BIO_new_file(cert_dst, "wb");
-		ERR(!wb, "%s", cert_dst);
-	}
-	X509_NAME_oneline(X509_get_subject_name(x509), buf, sizeof(buf));
-	ERR(!i2d_X509_bio(wb, x509), "%s", cert_dst);
-	if (kbuild_verbose)
-		fprintf(stderr, "Extracted cert: %s\n", buf);
-}
-
-int main(int argc, char **argv)
-{
-	char *cert_src;
-
-	OpenSSL_add_all_algorithms();
-	ERR_load_crypto_strings();
-	ERR_clear_error();
-
-	kbuild_verbose = atoi(getenv("KBUILD_VERBOSE")?:"0");
-
-        key_pass = getenv("KBUILD_SIGN_PIN");
-
-	if (argc != 3)
-		format();
-
-	cert_src = argv[1];
-	cert_dst = argv[2];
-
-	if (!cert_src[0]) {
-		/* Invoked with no input; create empty file */
-		FILE *f = fopen(cert_dst, "wb");
-		ERR(!f, "%s", cert_dst);
-		fclose(f);
-		exit(0);
-	} else if (!strncmp(cert_src, "pkcs11:", 7)) {
-		ENGINE *e;
-		struct {
-			const char *cert_id;
-			X509 *cert;
-		} parms;
-
-		parms.cert_id = cert_src;
-		parms.cert = NULL;
-
-		ENGINE_load_builtin_engines();
-		drain_openssl_errors();
-		e = ENGINE_by_id("pkcs11");
-		ERR(!e, "Load PKCS#11 ENGINE");
-		if (ENGINE_init(e))
-			drain_openssl_errors();
-		else
-			ERR(1, "ENGINE_init");
-		if (key_pass)
-			ERR(!ENGINE_ctrl_cmd_string(e, "PIN", key_pass, 0), "Set PKCS#11 PIN");
-		ENGINE_ctrl_cmd(e, "LOAD_CERT_CTRL", 0, &parms, NULL, 1);
-		ERR(!parms.cert, "Get X.509 from PKCS#11");
-		write_cert(parms.cert);
-	} else {
-		BIO *b;
-		X509 *x509;
-
-		b = BIO_new_file(cert_src, "rb");
-		ERR(!b, "%s", cert_src);
-
-		while (1) {
-			x509 = PEM_read_bio_X509(b, NULL, NULL, NULL);
-			if (wb && !x509) {
-				unsigned long err = ERR_peek_last_error();
-				if (ERR_GET_LIB(err) == ERR_LIB_PEM &&
-				    ERR_GET_REASON(err) == PEM_R_NO_START_LINE) {
-					ERR_clear_error();
-					break;
-				}
-			}
-			ERR(!x509, "%s", cert_src);
-			write_cert(x509);
-		}
-	}
-
-	BIO_free(wb);
-
-	return 0;
-}
diff --git a/scripts/remove-stale-files b/scripts/remove-stale-files
index 0114c41e6938..dd230792056a 100755
--- a/scripts/remove-stale-files
+++ b/scripts/remove-stale-files
@@ -34,3 +34,5 @@ if [ -n "${building_out_of_srctree}" ]; then
 		rm -f arch/mips/boot/compressed/${f}
 	done
 fi
+
+rm -f scripts/extract-cert