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Code Issues

nftables: fix parsing date expressions

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Musl libc does not support the non-POSIX "%F" format for strptime() so
replace all occurrences of it with an equivalent "%Y-%m-%d" format.

Fixes: #10419
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2022-08-09 00:05:02 +02:00
parent b5ec04f81a
commit e6e4f97999
2 changed files with 50 additions and 1 deletions
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2
package/network/utils/nftables/Makefile
View File

@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=nftables
PKG_VERSION:=1.0.4
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
PKG_SOURCE_URL:=https://netfilter.org/projects/$(PKG_NAME)/files

49
package/network/utils/nftables/patches/0001-meta-don-t-use-non-POSIX-formats-in-strptime.patch Normal file
View File

@ -0,0 +1,49 @@
From 1af8aabccd65e11caa397c4706353075f623cd01 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jo@mein.io>
Date: Mon, 8 Aug 2022 23:57:03 +0200
Subject: [PATCH] meta: don't use non-POSIX formats in strptime()
The current strptime() invocations in meta.c use the `%F` format which
is not specified by POSIX and thus unimplemented by some libc flavors
such as musl libc.
Replace all occurrences of `%F` with an equivalent `%Y-%m-%d` format
in order to be able to properly parse user supplied dates in such
environments.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
---
src/meta.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/meta.c b/src/meta.c
index 80ace25b..257bbc9f 100644
--- a/src/meta.c
+++ b/src/meta.c
@@ -399,7 +399,7 @@ static void date_type_print(const struct expr *expr, struct output_ctx *octx)
tstamp += cur_tm->tm_gmtoff;
if ((tm = gmtime((time_t *) &tstamp)) != NULL &&
- strftime(timestr, sizeof(timestr) - 1, "%F %T", tm))
+ strftime(timestr, sizeof(timestr) - 1, "%Y-%m-%d %T", tm))
nft_print(octx, "\"%s\"", timestr);
else
nft_print(octx, "Error converting timestamp to printed time");
@@ -412,11 +412,11 @@ static bool parse_iso_date(uint64_t *tstamp, const char *sym)
memset(&tm, 0, sizeof(struct tm));
- if (strptime(sym, "%F %T", &tm))
+ if (strptime(sym, "%Y-%m-%d %T", &tm))
goto success;
- if (strptime(sym, "%F %R", &tm))
+ if (strptime(sym, "%Y-%m-%d %R", &tm))
goto success;
- if (strptime(sym, "%F", &tm))
+ if (strptime(sym, "%Y-%m-%d", &tm))
goto success;
return false;
--
2.35.1