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/* verify.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2009 Timo Teräs <timo.teras@iki.fi>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#include <errno.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>

#include "apk_applet.h"
#include "apk_database.h"
#include "apk_print.h"

static int verify_main(void *ctx, struct apk_database *db, int argc, char **argv)
{
	struct apk_sign_ctx sctx;
	struct apk_istream *is;
	int i, r, ok, rc = 0;

	for (i = 0; i < argc; i++) {
		apk_sign_ctx_init(&sctx, APK_SIGN_VERIFY, NULL, db->keys_fd);
		is = apk_bstream_gunzip_mpart(apk_bstream_from_file(AT_FDCWD, argv[i]),
					      apk_sign_ctx_mpart_cb, &sctx);
		if (is == NULL) {
			apk_error("%s: %s", strerror(errno), argv[i]);
			apk_sign_ctx_free(&sctx);
			rc++;
			continue;
		}
		r = apk_tar_parse(is, apk_sign_ctx_verify_tar, &sctx, FALSE, &db->id_cache);
		is->close(is);
		ok = sctx.control_verified && sctx.data_verified;
		if (apk_verbosity >= 1)
			apk_message("%s: %d - %s", argv[i], r,
				ok ? "OK" :
				sctx.data_verified ? "UNTRUSTED" : "FAILED");
		if (!ok)
			rc++;
		apk_sign_ctx_free(&sctx);
	}

	return rc;
}

static struct apk_applet apk_verify = {
	.name = "verify",
	.help = "Verify package integrity and signature",
	.arguments = "FILE...",
	.open_flags = APK_OPENF_READ | APK_OPENF_NO_STATE,
	.forced_flags = APK_ALLOW_UNTRUSTED,
	.main = verify_main,
};

APK_DEFINE_APPLET(apk_verify);