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iodine: workaround incomplete musl nameser.h header

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The arpa/nameser.h header of musl libc indirectly depends on the endian.h
header but fails to explicitely include it to properly define
`__BYTE_ORDER` and `__BIG_ENDIAN` prior to declaring the DNS `HEADER`
structure.

When both the appropriate `__BYTE_ORDER` and `__BIG_ENDIAN` defines are
unset, the `#if __BYTE_ORDER == __BIG_ENDIAN` condition in `nameser.h`
evaluates to true, causing it to declare a bad (big endian) DNS packet
header structure on little endian systems.

Work around this musl bug by forcibly passing `-include endian.h` through
the `osflags` file.

An upstream fix for musl libc has been submitted with
http://www.openwall.com/lists/musl/2017/12/04/3

This should solve iodine packet corruption on little endian musl systems
reported at
http://lists.infradead.org/pipermail/lede-dev/2017-November/010085.html

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2017-11-29 18:13:36 +01:00
parent 70858690c0
commit 175cf9e985
2 changed files with 28 additions and 1 deletions
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2
net/iodine/Makefile
View file

@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=iodine
PKG_VERSION:=0.7.0
PKG_RELEASE:=2
PKG_RELEASE:=3
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=http://code.kryo.se/iodine/

27
net/iodine/patches/101-musl-workaround-incomplete-nameser-h.patch Normal file
View file

@ -0,0 +1,27 @@
The arpa/nameser.h header of musl libc indirectly depends on the endian.h
header but fails to explicitely include it to properly define
`__BYTE_ORDER` and `__BIG_ENDIAN` prior to declaring the DNS `HEADER`
structure.
When both the appropriate `__BYTE_ORDER` and `__BIG_ENDIAN` defines are
unset, the `#if __BYTE_ORDER == __BIG_ENDIAN` condition in `nameser.h`
evaluates to true, causing it to declare a bad (big endian) DNS packet
header structure on little endian systems.
Work around this musl bug by forcibly passing `-include endian.h` through
the `osflags` file.
An upstream fix for musl libc has been submitted with
http://www.openwall.com/lists/musl/2017/12/04/3
--- a/src/osflags
+++ b/src/osflags
@@ -27,7 +27,7 @@ cflags)
echo '-Dsocklen_t=int';
;;
Linux)
- FLAGS="-D_GNU_SOURCE"
+ FLAGS="-D_GNU_SOURCE -include endian.h"
echo $FLAGS;
;;
esac