/* 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;
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;
}
=9208b75e048dda0d285904de9be7ab654a4b94fc'>rt298.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='9208b75e048dda0d285904de9be7ab654a4b94fc'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>James Bottomley &lt;James.Bottomley@HansenPartnership.com&gt;</td><td class='right'>2017-01-17 17:32:54 -0500</td></tr>
<tr><th>committer</th><td>James Bottomley &lt;James.Bottomley@HansenPartnership.com&gt;</td><td class='right'>2017-01-17 17:32:54 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/rt298.c?h=nds-private-remove&amp;id=9208b75e048dda0d285904de9be7ab654a4b94fc'>9208b75e048dda0d285904de9be7ab654a4b94fc</a> (<a href='/cgit.cgi/linux/net-next.git/patch/sound/soc/codecs/rt298.c?id=9208b75e048dda0d285904de9be7ab654a4b94fc'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=9208b75e048dda0d285904de9be7ab654a4b94fc'>b3af58ccd11b9ea186d1388be263b8ae0cb829b3</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/codecs/rt298.c?h=nds-private-remove&amp;id=9208b75e048dda0d285904de9be7ab654a4b94fc'>sound/soc/codecs/rt298.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/rt298.c?h=nds-private-remove&amp;id=2f5a31456ee80b37ef1170319fa134af0a1dfcc4'>2f5a31456ee80b37ef1170319fa134af0a1dfcc4</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/rt298.c?h=nds-private-remove&amp;id=9208b75e048dda0d285904de9be7ab654a4b94fc&amp;id2=2f5a31456ee80b37ef1170319fa134af0a1dfcc4'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/codecs/rt298.c?h=nds-private-remove&amp;id=ffb58456589443ca572221fabbdef3db8483a779'>ffb58456589443ca572221fabbdef3db8483a779</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/codecs/rt298.c?h=nds-private-remove&amp;id=9208b75e048dda0d285904de9be7ab654a4b94fc&amp;id2=ffb58456589443ca572221fabbdef3db8483a779'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge remote-tracking branch 'mkp-scsi/fixes' into fixes</div><div class='commit-msg'></div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=9208b75e048dda0d285904de9be7ab654a4b94fc'>Diffstat</a> (limited to 'sound/soc/codecs/rt298.c')</div><table summary='diffstat' class='diffstat'>