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iptables-1.8.7-30.el9 

- Use proto_to_name() from xshared in more places

Resolves: rhbz#2065330
This commit is contained in:
Phil Sutter 2022-03-18 14:47:28 +01:00
parent a556128cb3
commit 21c02e6c1a
2 changed files with 161 additions and 1 deletions
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156
0034-Use-proto_to_name-from-xshared-in-more-places.patch Normal file
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@ -0,0 +1,156 @@
From dd052eb7326574b34a03e6f40862e2e59ce9e123 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 17 Nov 2020 00:57:10 +0100
Subject: [PATCH] Use proto_to_name() from xshared in more places
Share the common proto name lookup code. While being at it, make proto
number variable 16bit, values may exceed 256.
This aligns iptables-nft '-p' argument printing with legacy iptables. In
practice, this should make a difference only in corner cases.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 556f704458cdb509d395ddb7d2629987d60e762e)
---
include/xtables.h | 2 +-
iptables/ip6tables.c | 22 +++++-----------------
iptables/iptables.c | 20 +++++---------------
iptables/nft-shared.c | 6 +++---
iptables/xshared.c | 2 +-
iptables/xshared.h | 2 +-
6 files changed, 16 insertions(+), 38 deletions(-)
diff --git a/include/xtables.h b/include/xtables.h
index b5a6764abfa4e..aec50573b835c 100644
--- a/include/xtables.h
+++ b/include/xtables.h
@@ -395,7 +395,7 @@ struct xtables_rule_match {
*/
struct xtables_pprot {
const char *name;
- uint8_t num;
+ uint16_t num;
};
enum xtables_tryload {
diff --git a/iptables/ip6tables.c b/iptables/ip6tables.c
index 4422e28276ab5..897f30d5ef4b0 100644
--- a/iptables/ip6tables.c
+++ b/iptables/ip6tables.c
@@ -770,28 +770,16 @@ print_iface(char letter, const char *iface, const unsigned char *mask,
}
}
-/* The ip6tables looks up the /etc/protocols. */
static void print_proto(uint16_t proto, int invert)
{
if (proto) {
- unsigned int i;
+ const char *pname = proto_to_name(proto, 0);
const char *invertstr = invert ? " !" : "";
- const struct protoent *pent = getprotobynumber(proto);
- if (pent) {
- printf("%s -p %s",
- invertstr, pent->p_name);
- return;
- }
-
- for (i = 0; xtables_chain_protos[i].name != NULL; ++i)
- if (xtables_chain_protos[i].num == proto) {
- printf("%s -p %s",
- invertstr, xtables_chain_protos[i].name);
- return;
- }
-
- printf("%s -p %u", invertstr, proto);
+ if (pname)
+ printf("%s -p %s", invertstr, pname);
+ else
+ printf("%s -p %u", invertstr, proto);
}
}
diff --git a/iptables/iptables.c b/iptables/iptables.c
index bbb87f16f8d1d..9964d14ed8195 100644
--- a/iptables/iptables.c
+++ b/iptables/iptables.c
@@ -739,23 +739,13 @@ list_entries(const xt_chainlabel chain, int rulenum, int verbose, int numeric,
static void print_proto(uint16_t proto, int invert)
{
if (proto) {
- unsigned int i;
+ const char *pname = proto_to_name(proto, 0);
const char *invertstr = invert ? " !" : "";
- const struct protoent *pent = getprotobynumber(proto);
- if (pent) {
- printf("%s -p %s", invertstr, pent->p_name);
- return;
- }
-
- for (i = 0; xtables_chain_protos[i].name != NULL; ++i)
- if (xtables_chain_protos[i].num == proto) {
- printf("%s -p %s",
- invertstr, xtables_chain_protos[i].name);
- return;
- }
-
- printf("%s -p %u", invertstr, proto);
+ if (pname)
+ printf("%s -p %s", invertstr, pname);
+ else
+ printf("%s -p %u", invertstr, proto);
}
}
diff --git a/iptables/nft-shared.c b/iptables/nft-shared.c
index 1aaaa8159ff61..bd953d761b6ec 100644
--- a/iptables/nft-shared.c
+++ b/iptables/nft-shared.c
@@ -821,13 +821,13 @@ void save_rule_details(const struct iptables_command_state *cs,
}
if (proto > 0) {
- const struct protoent *pent = getprotobynumber(proto);
+ const char *pname = proto_to_name(proto, 0);
if (invflags & XT_INV_PROTO)
printf("! ");
- if (pent)
- printf("-p %s ", pent->p_name);
+ if (pname)
+ printf("-p %s ", pname);
else
printf("-p %u ", proto);
}
diff --git a/iptables/xshared.c b/iptables/xshared.c
index 171b0bdb7ca27..5a1f8169b00ea 100644
--- a/iptables/xshared.c
+++ b/iptables/xshared.c
@@ -48,7 +48,7 @@ void print_extension_helps(const struct xtables_target *t,
}
const char *
-proto_to_name(uint8_t proto, int nolookup)
+proto_to_name(uint16_t proto, int nolookup)
{
unsigned int i;
diff --git a/iptables/xshared.h b/iptables/xshared.h
index 84f1a559aafb2..674a36635ffd0 100644
--- a/iptables/xshared.h
+++ b/iptables/xshared.h
@@ -152,7 +152,7 @@ enum {
extern void print_extension_helps(const struct xtables_target *,
const struct xtables_rule_match *);
-extern const char *proto_to_name(uint8_t, int);
+extern const char *proto_to_name(uint16_t, int);
extern int command_default(struct iptables_command_state *,
struct xtables_globals *);
extern struct xtables_match *load_proto(struct iptables_command_state *);
--
2.34.1

6
iptables.spec
View File

@ -16,7 +16,7 @@ Name: iptables
Summary: Tools for managing Linux kernel packet filtering capabilities
URL: https://www.netfilter.org/projects/iptables
Version: 1.8.7
Release: 29%{?dist}
Release: 30%{?dist}
Source: %{url}/files/%{name}-%{version}.tar.bz2
Source1: iptables.init
Source2: iptables-config
@ -62,6 +62,7 @@ Patch30: 0030-xshared-Merge-and-share-parse_chain.patch
Patch31: 0031-nft-Reject-standard-targets-as-chain-names-when-rest.patch
Patch32: 0032-libxtables-Implement-notargets-hash-table.patch
Patch33: 0033-libxtables-Boost-rule-target-checks-by-announcing-ch.patch
Patch34: 0034-Use-proto_to_name-from-xshared-in-more-places.patch
# pf.os: ISC license
# iptables-apply: Artistic 2.0
@ -477,6 +478,9 @@ fi
%ghost %{_mandir}/man8/ebtables.8.gz
%changelog
* Fri Mar 18 2022 Phil Sutter <psutter@redhat.com> - 1.8.7-30
- Use proto_to_name() from xshared in more places
* Fri Mar 18 2022 Phil Sutter <psutter@redhat.com> - 1.8.7-29
- libxtables: Boost rule target checks by announcing chain names
- libxtables: Implement notargets hash table