From cdccc69c62579b0c13b35fad0728079652b8f3c9 Mon Sep 17 00:00:00 2001 From: David Oberhollenzer Date: Tue, 31 Jan 2023 11:21:30 +0100 Subject: Move library source into src sub-directory Signed-off-by: David Oberhollenzer --- lib/util/src/source_date_epoch.c | 44 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 lib/util/src/source_date_epoch.c (limited to 'lib/util/src/source_date_epoch.c') diff --git a/lib/util/src/source_date_epoch.c b/lib/util/src/source_date_epoch.c new file mode 100644 index 0000000..26e5530 --- /dev/null +++ b/lib/util/src/source_date_epoch.c @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: LGPL-3.0-or-later */ +/* + * source_date_epoch.c + * + * Copyright (C) 2019 David Oberhollenzer + */ +#include "util/util.h" + +#include +#include +#include + +sqfs_u32 get_source_date_epoch(void) +{ + const char *str, *ptr; + sqfs_u32 x, tval = 0; + + str = getenv("SOURCE_DATE_EPOCH"); + + if (str == NULL || *str == '\0') + return 0; + + for (ptr = str; *ptr != '\0'; ++ptr) { + if (!isdigit(*ptr)) + goto fail_nan; + + x = (*ptr) - '0'; + + if (tval > (UINT32_MAX - x) / 10) + goto fail_ov; + + tval = tval * 10 + x; + } + + return tval; +fail_ov: + fprintf(stderr, "WARNING: SOURCE_DATE_EPOCH=%s does not fit into " + "32 bit integer\n", str); + return 0; +fail_nan: + fprintf(stderr, "WARNING: SOURCE_DATE_EPOCH=%s is not a positive " + "number\n", str); + return 0; +} -- cgit v1.2.3