[prev in list] [next in list] [prev in thread] [next in thread]
List: busybox
Subject: [PATCH] Simplify display of IPv6 addresses based on international standard
From: "zhousiqi (A)" <zhousiqi5 () huawei ! com>
Date: 2023-06-08 2:51:38
Message-ID: 847942ea3b8840f08e9537c9875937b4 () huawei ! com
[Download RAW message or body]
Dear BusyBox maintainers,
I am writing to propose a patch for dhcpc6 that simplifies the display of IPv6 \
addresses based on the international standard. Currently, when dhcpc6 obtains an IPv6 \
address, it displays the address in a full format, which can be difficult to read and \
compare. With this patch, the address will be displayed in a simplified format that \
is easier to read and understand.
I have tested this patch on my own system and have not encountered any issues. \
However, I welcome any feedback or suggestions from the community.
Thank you for considering my proposal.
Best regards,
Zhou
From 757b2901fd397399f6b050a015767d2355a6f36e Mon Sep 17 00:00:00 2001
From: Zhou Siqi <zhousiqi5@huawei.com>
Date: Tue, 6 Jun 2023 15:49:59 +0800
Subject: [PATCH] Currently, udhcpc6 does not support simplified IPv6 address
based on standards. This modification enables udhcpc6 to support this
function.
Signed-off-by: Zhou Siqi <zhousiqi5@huawei.com>
---
networking/udhcp/Config.src | 7 +++++++
networking/udhcp/common.c | 19 ++++++++++++++++++-
2 files changed, 25 insertions(+), 1 deletion(-)
diff --git a/networking/udhcp/Config.src b/networking/udhcp/Config.src
index 574c33c..c4bb89f 100644
--- a/networking/udhcp/Config.src
+++ b/networking/udhcp/Config.src
@@ -179,3 +179,10 @@ config FEATURE_UDHCPC6_RFC4075
help
If selected, the IPv6 client udhcpc6 can obtain the SNTP servers.
+config FEATURE_UDHCPC6_SIMPLIFY
+ bool "Support udhcpc6 simplified ipv6 address"
+ default y
+ depends on UDHCPC6
+ help
+ If selected, the IPv6 client udhcpc6 can simplify IPv6 addresses
+ based on international standards.
diff --git a/networking/udhcp/common.c b/networking/udhcp/common.c
index 31e525c..e457734 100644
--- a/networking/udhcp/common.c
+++ b/networking/udhcp/common.c
@@ -5,6 +5,9 @@
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "common.h"
+#if ENABLE_FEATURE_UDHCPC6_SIMPLIFY
+#include <netinet/in.h>
+#endif
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
unsigned dhcp_verbose;
@@ -704,8 +707,12 @@ int FAST_FUNC udhcp_str2optset(const char *const_str, void *arg,
int FAST_FUNC sprint_nip6(char *dest, /*const char *pre,*/ const uint8_t *ip)
{
char hexstrbuf[16 * 2];
+#if ENABLE_FEATURE_UDHCPC6_SIMPLIFY
+ struct in6_addr addr;
+ char compressed_address[INET6_ADDRSTRLEN];
+#endif
bin2hex(hexstrbuf, (void*)ip, 16);
- return sprintf(dest, /* "%s" */
+ sprintf(dest, /* "%s" */
"%.4s:%.4s:%.4s:%.4s:%.4s:%.4s:%.4s:%.4s",
/* pre, */
hexstrbuf + 0 * 4,
@@ -717,4 +724,14 @@ int FAST_FUNC sprint_nip6(char *dest, /*const char *pre,*/ const \
uint8_t *ip) hexstrbuf + 6 * 4,
hexstrbuf + 7 * 4
);
+#if ENABLE_FEATURE_UDHCPC6_SIMPLIFY
+ inet_pton(AF_INET6, dest, &addr);
+ inet_ntop(AF_INET6, &addr, compressed_address, INET6_ADDRSTRLEN);
+ /* If dest is different from compressed_address, the simplified address is valid.
+ * In this case, assign the simplified address to dest.
+ */
+ if (strcmp(dest, compressed_address) != 0)
+ strcpy(dest,compressed_address);
+#endif
+ return strlen(dest);
}
--
2.12.3
_______________________________________________
busybox mailing list
busybox@busybox.net
http://lists.busybox.net/mailman/listinfo/busybox
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic