mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-28 17:48:58 +00:00
38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
|
From 7cef4817d6d6d61a1166ed7dfc13537b95c65970 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Denys Vlasenko <vda.linux@googlemail.com>
|
||
|
|
Date: Thu, 15 Sep 2016 13:20:51 +0200
|
||
|
|
Subject: [PATCH] libbb:/send_to_from: do not require that "to" should have the
|
||
|
|
same AF. Closes 9146
|
||
|
|
|
||
|
|
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
||
|
|
---
|
||
|
|
libbb/udp_io.c | 10 ++++++++--
|
||
|
|
1 file changed, 8 insertions(+), 2 deletions(-)
|
||
|
|
|
||
|
|
--- a/libbb/udp_io.c
|
||
|
|
+++ b/libbb/udp_io.c
|
||
|
|
@@ -70,7 +70,13 @@ send_to_from(int fd, void *buf, size_t l
|
||
|
|
msg.msg_flags = flags;
|
||
|
|
|
||
|
|
cmsgptr = CMSG_FIRSTHDR(&msg);
|
||
|
|
- if (to->sa_family == AF_INET && from->sa_family == AF_INET) {
|
||
|
|
+ /*
|
||
|
|
+ * Users report that to->sa_family can be AF_INET6 too,
|
||
|
|
+ * if "to" was acquired by recv_from_to(). IOW: recv_from_to()
|
||
|
|
+ * was seen showing IPv6 "from" even when the destination
|
||
|
|
+ * of received packet (our local address) was IPv4.
|
||
|
|
+ */
|
||
|
|
+ if (/* to->sa_family == AF_INET && */ from->sa_family == AF_INET) {
|
||
|
|
struct in_pktinfo *pktptr;
|
||
|
|
cmsgptr->cmsg_level = IPPROTO_IP;
|
||
|
|
cmsgptr->cmsg_type = IP_PKTINFO;
|
||
|
|
@@ -86,7 +92,7 @@ send_to_from(int fd, void *buf, size_t l
|
||
|
|
pktptr->ipi_spec_dst = ((struct sockaddr_in*)from)->sin_addr;
|
||
|
|
}
|
||
|
|
# if ENABLE_FEATURE_IPV6 && defined(IPV6_PKTINFO)
|
||
|
|
- else if (to->sa_family == AF_INET6 && from->sa_family == AF_INET6) {
|
||
|
|
+ else if (/* to->sa_family == AF_INET6 && */ from->sa_family == AF_INET6) {
|
||
|
|
struct in6_pktinfo *pktptr;
|
||
|
|
cmsgptr->cmsg_level = IPPROTO_IPV6;
|
||
|
|
cmsgptr->cmsg_type = IPV6_PKTINFO;
|