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busybox: nslookup_lede: fix compatibility with v1.25

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The ":*" optstring syntax was only recently introduced with BusyBox v1.26,
older versions need a corresponding hint in the "opt_complementary" variable
to denote flag values that should be stored as llist entries.

Add the required opt_complementary entry to fix random SIGBUS, SIGILL or
SIGSEGV related crashes on BusyBox 1.25.x when attempting to use the "-q"
flag of the "nslookup_lede" applet.

Ref: https://forum.lede-project.org/t/nslookup-ipv6-in-lede-17-01-1

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2017-04-25 14:03:11 +02:00
parent 3a2cc2c8ad
commit f1e3285461
2 changed files with 7 additions and 6 deletions
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2
package/utils/busybox/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=busybox
PKG_VERSION:=1.26.2
PKG_RELEASE:=2
PKG_RELEASE:=3
PKG_FLAGS:=essential
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2

11
package/utils/busybox/patches/230-add_nslookup_lede.patch
View file

@ -1,4 +1,4 @@
From 2285cd400a10b1bde5472fe1cec3311300ee943c Mon Sep 17 00:00:00 2001
From 1188f159e0b0a9c07bed835c7313bedf5322a9e3 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jo@mein.io>
Date: Tue, 14 Mar 2017 22:21:34 +0100
Subject: [PATCH] networking: add LEDE nslookup applet
@ -12,16 +12,16 @@ and the libresolv primitives to parse received DNS responses.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
---
networking/nslookup_lede.c | 893 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 893 insertions(+)
networking/nslookup_lede.c | 894 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 894 insertions(+)
create mode 100644 networking/nslookup_lede.c
diff --git a/networking/nslookup_lede.c b/networking/nslookup_lede.c
new file mode 100644
index 000000000..6f1f86502
index 000000000..f3e42d3bb
--- /dev/null
+++ b/networking/nslookup_lede.c
@@ -0,0 +1,893 @@
@@ -0,0 +1,894 @@
+/*
+ * nslookup_lede - musl compatible replacement for busybox nslookup
+ *
@ -760,6 +760,7 @@ index 000000000..6f1f86502
+ applet_long_options = nslookup_longopts;
+#endif
+
+ opt_complementary = "q::";
+ opts = getopt32(argv, "+q:*p:+r:+t:+s",
+ &type_strings, &default_port,
+ &default_retry, &default_timeout);