summaryrefslogtreecommitdiff
path: root/lib/fstree/source_date_epoch.c
diff options
context:
space:
mode:
authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-01 14:11:51 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-09-01 14:11:51 +0200
commit79c333899d318bf9b1eec3837833c7f0229d1906 (patch)
treed31f6513d6284bcc8dc9a7ec8523ec2fdfa1944c /lib/fstree/source_date_epoch.c
parent3b43f166629efbb34e1b0ceeaa2f06452d0fed2f (diff)
Move some application specific stuff out of libutil
This commit does the following: - canonicalize_name is moved to libfstree - source_date_epoch is only used inside libfstree, so it's also moved over and can later be completely internalized - print_version is moved over to sqfshelper. Mainly so it doesn't end up in libsquashfs.so for no sane reason. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/fstree/source_date_epoch.c')
-rw-r--r--lib/fstree/source_date_epoch.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/fstree/source_date_epoch.c b/lib/fstree/source_date_epoch.c
new file mode 100644
index 0000000..bbf2e42
--- /dev/null
+++ b/lib/fstree/source_date_epoch.c
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * source_date_epoch.h
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+#include "fstree.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+
+uint32_t get_source_date_epoch(void)
+{
+ const char *str, *ptr;
+ uint32_t 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;
+}