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Code Issues

busybox: add SRV support to nslookup_lede.c patch 

Add support for querying and parsing SRV DNS records to nslookup_lede.c

This patch is based on http://lists.busybox.net/pipermail/busybox/2019-June/087359.html

Signed-off-by: Perry Melange <isprotejesvalkata@gmail.com>
[reword subject, bump PKG_RELEASE]
Signed-off-by: Paul Spooren <mail@aparcar.org>
This commit is contained in:
Perry Melange 2019-07-30 11:05:22 +02:00 committed by Paul Spooren
parent 75ea878d1b
commit 3a359398f0
2 changed files with 22 additions and 2 deletions
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2
package/utils/busybox/Makefile
View File

@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=busybox
PKG_VERSION:=1.33.0
PKG_RELEASE:=3
PKG_RELEASE:=4
PKG_FLAGS:=essential
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2

22
package/utils/busybox/patches/230-add_nslookup_lede.patch
View File

@ -34,7 +34,7 @@ Signed-off-by: Jo-Philipp Wich <jo@mein.io>
# However, on *other platforms* it fails when some of those flags
--- /dev/null
+++ b/networking/nslookup_lede.c
@@ -0,0 +1,914 @@
@@ -0,0 +1,934 @@
+/*
+ * nslookup_lede - musl compatible replacement for busybox nslookup
+ *
@ -128,6 +128,7 @@ Signed-off-by: Jo-Philipp Wich <jo@mein.io>
+ { ns_t_cname, "CNAME" },
+ { ns_t_mx, "MX" },
+ { ns_t_txt, "TXT" },
+ { ns_t_srv, "SRV" },
+ { ns_t_ptr, "PTR" },
+ { ns_t_any, "ANY" },
+ { }
@ -259,6 +260,25 @@ Signed-off-by: Jo-Philipp Wich <jo@mein.io>
+ }
+ break;
+
+ case ns_t_srv:
+ if (rdlen < 6) {
+ //printf("SRV record too short\n");
+ return -1;
+ }
+
+ cp = ns_rr_rdata(rr);
+ n = ns_name_uncompress(ns_msg_base(handle), ns_msg_end(handle),
+ cp + 6, dname, sizeof(dname));
+
+ if (n < 0) {
+ //printf("Unable to uncompress domain: %s\n", strerror(errno));
+ return -1;
+ }
+
+ printf("%s\tservice = %hu %hu %hu %s\n", ns_rr_name(rr),
+ ns_get16(cp), ns_get16(cp + 2), ns_get16(cp + 4), dname);
+ break;
+
+ case ns_t_soa:
+ if (rdlen < 20) {
+ //fprintf(stderr, "SOA record too short\n");