rpms/iptables
7
0
Fork 0
Code Issues Pull Requests Releases Activity

import iptables-1.8.4-20.el8

Browse Source
This commit is contained in:
CentOS Sources 2021-10-06 08:08:52 -04:00 committed by Stepan Oksanichenko
parent e7ebe75cd0
commit bf599a7716
16 changed files with 1796 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
SOURCES/0044-xtables-monitor-Fix-ip6tables-rule-printing.patch Normal file
View File

@ -0,0 +1,38 @@
From 538acaef0d8424bd61047e6f1b81e3bc8bd421ec Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 7 Aug 2020 16:42:07 +0200
Subject: [PATCH] xtables-monitor: Fix ip6tables rule printing
When printing an ip6tables rule event, false family ops are used as they
are initially looked up for AF_INET and reused no matter the current
rule's family. In practice, this means that nft_rule_print_save() calls
the wrong rule_to_cs, save_rule and clear_cs callbacks. Therefore, if a
rule specifies a source or destination address, the address is not
printed.
Fix this by performing a family lookup each time rule_cb is called.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit ca69b0290dc509d72118f0a054a5c740cb913875)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-monitor.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index c2b31dbaa0795..92962a2a95f48 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -93,6 +93,8 @@ static int rule_cb(const struct nlmsghdr *nlh, void *data)
if (arg->nfproto && arg->nfproto != family)
goto err_free;
+ arg->h->ops = nft_family_ops_lookup(family);
+
if (arg->is_event)
printf(" EVENT: ");
switch (family) {
--
2.31.1

86
SOURCES/0045-xtables-monitor-fix-rule-printing.patch Normal file
View File

@ -0,0 +1,86 @@
From 0b886ea23e8473e692bdf20ecf4985f44408a132 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Sat, 12 Dec 2020 16:15:32 +0100
Subject: [PATCH] xtables-monitor: fix rule printing
trace_print_rule does a rule dump. This prints unrelated rules
in the same chain. Instead the function should only request the
specific handle.
Furthermore, flush output buffer afterwards so this plays nice when
output isn't a terminal.
Signed-off-by: Florian Westphal <fw@strlen.de>
(cherry picked from commit 07af4da52ab3002c9cb510863b4eb7aaca4fb43b)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-monitor.c | 32 +++++++++++++++-----------------
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index 92962a2a95f48..43b9064c3d30e 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -227,12 +227,12 @@ static void trace_print_rule(const struct nftnl_trace *nlt, struct cb_arg *args)
exit(EXIT_FAILURE);
}
- nlh = nftnl_chain_nlmsg_build_hdr(buf, NFT_MSG_GETRULE, family, NLM_F_DUMP, 0);
+ nlh = nftnl_chain_nlmsg_build_hdr(buf, NFT_MSG_GETRULE, family, 0, 0);
nftnl_rule_set_u32(r, NFTNL_RULE_FAMILY, family);
nftnl_rule_set_str(r, NFTNL_RULE_CHAIN, chain);
nftnl_rule_set_str(r, NFTNL_RULE_TABLE, table);
- nftnl_rule_set_u64(r, NFTNL_RULE_POSITION, handle);
+ nftnl_rule_set_u64(r, NFTNL_RULE_HANDLE, handle);
nftnl_rule_nlmsg_build_payload(nlh, r);
nftnl_rule_free(r);
@@ -248,24 +248,21 @@ static void trace_print_rule(const struct nftnl_trace *nlt, struct cb_arg *args)
}
portid = mnl_socket_get_portid(nl);
- if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
- perror("mnl_socket_send");
- exit(EXIT_FAILURE);
- }
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_send");
+ exit(EXIT_FAILURE);
+ }
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
- while (ret > 0) {
+ if (ret > 0) {
args->is_event = false;
- ret = mnl_cb_run(buf, ret, 0, portid, rule_cb, args);
- if (ret <= 0)
- break;
- ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
- }
- if (ret == -1) {
- perror("error");
- exit(EXIT_FAILURE);
- }
- mnl_socket_close(nl);
+ ret = mnl_cb_run(buf, ret, 0, portid, rule_cb, args);
+ }
+ if (ret == -1) {
+ perror("error");
+ exit(EXIT_FAILURE);
+ }
+ mnl_socket_close(nl);
}
static void trace_print_packet(const struct nftnl_trace *nlt, struct cb_arg *args)
@@ -531,6 +528,7 @@ static int trace_cb(const struct nlmsghdr *nlh, struct cb_arg *arg)
err_free:
nftnl_trace_free(nlt);
err:
+ fflush(stdout);
return MNL_CB_OK;
}
--
2.31.1

39
SOURCES/0046-xtables-monitor-fix-packet-family-protocol.patch Normal file
View File

@ -0,0 +1,39 @@
From d272e1225bf9b31ec0397bd86b39a54da49d5468 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Sat, 12 Dec 2020 16:15:33 +0100
Subject: [PATCH] xtables-monitor: fix packet family protocol
This prints the family passed on the command line (which might be 0).
Print the table family instead.
Signed-off-by: Florian Westphal <fw@strlen.de>
(cherry picked from commit 946923b640afc2249cf98743ff60a97291108701)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-monitor.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index 43b9064c3d30e..9fa1ca166a61e 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -273,14 +273,14 @@ static void trace_print_packet(const struct nftnl_trace *nlt, struct cb_arg *arg
uint32_t mark;
char name[IFNAMSIZ];
- printf("PACKET: %d %08x ", args->nfproto, nftnl_trace_get_u32(nlt, NFTNL_TRACE_ID));
+ family = nftnl_trace_get_u32(nlt, NFTNL_TRACE_FAMILY);
+ printf("PACKET: %d %08x ", family, nftnl_trace_get_u32(nlt, NFTNL_TRACE_ID));
if (nftnl_trace_is_set(nlt, NFTNL_TRACE_IIF))
printf("IN=%s ", if_indextoname(nftnl_trace_get_u32(nlt, NFTNL_TRACE_IIF), name));
if (nftnl_trace_is_set(nlt, NFTNL_TRACE_OIF))
printf("OUT=%s ", if_indextoname(nftnl_trace_get_u32(nlt, NFTNL_TRACE_OIF), name));
- family = nftnl_trace_get_u32(nlt, NFTNL_TRACE_FAMILY);
nfproto = family;
if (nftnl_trace_is_set(nlt, NFTNL_TRACE_NFPROTO)) {
nfproto = nftnl_trace_get_u32(nlt, NFTNL_TRACE_NFPROTO);
--
2.31.1

102
SOURCES/0047-xtables-monitor-print-packet-first.patch Normal file
View File

@ -0,0 +1,102 @@
From 07f51d26e405b4a328813f35bc27015eb9324330 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Sat, 12 Dec 2020 16:15:34 +0100
Subject: [PATCH] xtables-monitor: print packet first
The trace mode should first print the packet that was received and
then the rule/verdict.
Furthermore, the monitor did sometimes print an extra newline.
After this patch, output is more consistent with nft monitor.
Signed-off-by: Florian Westphal <fw@strlen.de>
(cherry picked from commit 180ba723d0b305fab9287d3bc5f845a43d9eb793)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-monitor.c | 34 +++++++++++++++++++++++-----------
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index 9fa1ca166a61e..23e828988bb8b 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -106,6 +106,7 @@ static int rule_cb(const struct nlmsghdr *nlh, void *data)
printf("-0 ");
break;
default:
+ puts("");
goto err_free;
}
@@ -433,9 +434,18 @@ static void trace_print_packet(const struct nftnl_trace *nlt, struct cb_arg *arg
mark = nftnl_trace_get_u32(nlt, NFTNL_TRACE_MARK);
if (mark)
printf("MARK=0x%x ", mark);
+ puts("");
+}
+
+static void trace_print_hdr(const struct nftnl_trace *nlt)
+{
+ printf(" TRACE: %d %08x %s:%s", nftnl_trace_get_u32(nlt, NFTNL_TABLE_FAMILY),
+ nftnl_trace_get_u32(nlt, NFTNL_TRACE_ID),
+ nftnl_trace_get_str(nlt, NFTNL_TRACE_TABLE),
+ nftnl_trace_get_str(nlt, NFTNL_TRACE_CHAIN));
}
-static void print_verdict(struct nftnl_trace *nlt, uint32_t verdict)
+static void print_verdict(const struct nftnl_trace *nlt, uint32_t verdict)
{
const char *chain;
@@ -496,35 +506,37 @@ static int trace_cb(const struct nlmsghdr *nlh, struct cb_arg *arg)
arg->nfproto != nftnl_trace_get_u32(nlt, NFTNL_TABLE_FAMILY))
goto err_free;
- printf(" TRACE: %d %08x %s:%s", nftnl_trace_get_u32(nlt, NFTNL_TABLE_FAMILY),
- nftnl_trace_get_u32(nlt, NFTNL_TRACE_ID),
- nftnl_trace_get_str(nlt, NFTNL_TRACE_TABLE),
- nftnl_trace_get_str(nlt, NFTNL_TRACE_CHAIN));
-
switch (nftnl_trace_get_u32(nlt, NFTNL_TRACE_TYPE)) {
case NFT_TRACETYPE_RULE:
verdict = nftnl_trace_get_u32(nlt, NFTNL_TRACE_VERDICT);
- printf(":rule:0x%llx:", (unsigned long long)nftnl_trace_get_u64(nlt, NFTNL_TRACE_RULE_HANDLE));
- print_verdict(nlt, verdict);
- if (nftnl_trace_is_set(nlt, NFTNL_TRACE_RULE_HANDLE))
- trace_print_rule(nlt, arg);
if (nftnl_trace_is_set(nlt, NFTNL_TRACE_LL_HEADER) ||
nftnl_trace_is_set(nlt, NFTNL_TRACE_NETWORK_HEADER))
trace_print_packet(nlt, arg);
+
+ if (nftnl_trace_is_set(nlt, NFTNL_TRACE_RULE_HANDLE)) {
+ trace_print_hdr(nlt);
+ printf(":rule:0x%" PRIx64":", nftnl_trace_get_u64(nlt, NFTNL_TRACE_RULE_HANDLE));
+ print_verdict(nlt, verdict);
+ printf(" ");
+ trace_print_rule(nlt, arg);
+ }
break;
case NFT_TRACETYPE_POLICY:
+ trace_print_hdr(nlt);
printf(":policy:");
verdict = nftnl_trace_get_u32(nlt, NFTNL_TRACE_POLICY);
print_verdict(nlt, verdict);
+ puts("");
break;
case NFT_TRACETYPE_RETURN:
+ trace_print_hdr(nlt);
printf(":return:");
trace_print_return(nlt);
+ puts("");
break;
}
- puts("");
err_free:
nftnl_trace_free(nlt);
err:
--
2.31.1

31
SOURCES/0048-xtables-monitor.patch Normal file
View File

@ -0,0 +1,31 @@
From d64511250cf43ae11e18964cc0dccf9c2d6c3973 Mon Sep 17 00:00:00 2001
From: Florian Westphal <fw@strlen.de>
Date: Mon, 14 Dec 2020 17:11:23 +0100
Subject: [PATCH] xtables-monitor:
'LL=0x304' is not very convenient, print LOOPBACK instead.
Signed-off-by: Florian Westphal <fw@strlen.de>
(cherry picked from commit 98ed6f6fc6d97663a33de67afff60196052880b1)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-monitor.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index 23e828988bb8b..88033a59526d2 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -306,6 +306,9 @@ static void trace_print_packet(const struct nftnl_trace *nlt, struct cb_arg *arg
printf("MACDST=%s ", ether_ntoa((const void *)eh->h_dest));
printf("MACPROTO=%04x ", ntohs(eh->h_proto));
break;
+ case ARPHRD_LOOPBACK:
+ printf("LOOPBACK ");
+ break;
default:
printf("LL=0x%x ", type);
for (i = 0 ; i < len; i++)
--
2.31.1

74
SOURCES/0049-nft-Fix-bitwise-expression-avoidance-detection.patch Normal file
View File

@ -0,0 +1,74 @@
From f2d177c3a7a6a7154aabfab6047c510e0cee428e Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 19 Feb 2021 16:54:57 +0100
Subject: [PATCH] nft: Fix bitwise expression avoidance detection
Byte-boundary prefix detection was too sloppy: Any data following the
first zero-byte was ignored. Add a follow-up loop making sure there are
no stray bits in the designated host part.
Fixes: 323259001d617 ("nft: Optimize class-based IP prefix matches")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 330f5df03ad589b46865ceedf2a54cf10a4225ba)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/nft-shared.c | 4 +++-
.../testcases/ip6tables/0004-address-masks_0 | 24 +++++++++++++++++++
2 files changed, 27 insertions(+), 1 deletion(-)
create mode 100755 iptables/tests/shell/testcases/ip6tables/0004-address-masks_0
diff --git a/iptables/nft-shared.c b/iptables/nft-shared.c
index 2aae0a3a49dfe..7f757d38ecaec 100644
--- a/iptables/nft-shared.c
+++ b/iptables/nft-shared.c
@@ -166,7 +166,7 @@ void add_addr(struct nftnl_rule *r, enum nft_payload_bases base, int offset,
{
const unsigned char *m = mask;
bool bitwise = false;
- int i;
+ int i, j;
for (i = 0; i < len; i++) {
if (m[i] != 0xff) {
@@ -174,6 +174,8 @@ void add_addr(struct nftnl_rule *r, enum nft_payload_bases base, int offset,
break;
}
}
+ for (j = i + 1; !bitwise && j < len; j++)
+ bitwise = !!m[j];
if (!bitwise)
len = i;
diff --git a/iptables/tests/shell/testcases/ip6tables/0004-address-masks_0 b/iptables/tests/shell/testcases/ip6tables/0004-address-masks_0
new file mode 100755
index 0000000000000..7eb42f08da975
--- /dev/null
+++ b/iptables/tests/shell/testcases/ip6tables/0004-address-masks_0
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e
+
+$XT_MULTI ip6tables-restore <<EOF
+*filter
+-A FORWARD -s feed:babe::/ffff::0
+-A FORWARD -s feed:babe::/ffff:ff00::0
+-A FORWARD -s feed:babe::/ffff:fff0::0
+-A FORWARD -s feed:babe::/ffff:ffff::0
+-A FORWARD -s feed:babe::/0:ffff::0
+-A FORWARD -s feed:c0ff::babe:f00/ffff::ffff:0
+COMMIT
+EOF
+
+EXPECT='-P FORWARD ACCEPT
+-A FORWARD -s feed::/16
+-A FORWARD -s feed:ba00::/24
+-A FORWARD -s feed:bab0::/28
+-A FORWARD -s feed:babe::/32
+-A FORWARD -s 0:babe::/0:ffff::
+-A FORWARD -s feed::babe:0/ffff::ffff:0'
+
+diff -u -Z <(echo -e "$EXPECT") <($XT_MULTI ip6tables -S FORWARD)
--
2.31.1

197
SOURCES/0050-xtables-translate-Fix-translation-of-odd-netmasks.patch Normal file
View File

@ -0,0 +1,197 @@
From d8b7a38b12888dcd39c7678b00625369389de9ea Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 2 Mar 2021 14:50:07 +0100
Subject: [PATCH] xtables-translate: Fix translation of odd netmasks
Iptables supports netmasks which are not prefixes to match on (or
ignore) arbitrary bits in an address. Yet nftables' prefix notation is
available for real prefixes only, so translation is not as trivial -
print bitmask syntax for those cases.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 46f9d3a9a61ee80fa94b7fa7b3b36045c92606ae)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/generic.txlate | 48 +++++++++++++++++++++++++++++++++++++
extensions/libxt_standard.t | 12 ++++++++++
iptables/nft-ipv4.c | 42 ++++++++++++++++++++++----------
iptables/nft-ipv6.c | 19 ++++++++++++---
4 files changed, 106 insertions(+), 15 deletions(-)
diff --git a/extensions/generic.txlate b/extensions/generic.txlate
index 0e256c3727559..9ae9a5b54c1b9 100644
--- a/extensions/generic.txlate
+++ b/extensions/generic.txlate
@@ -10,6 +10,54 @@ nft insert rule ip filter INPUT iifname "iifname" ip saddr 10.0.0.0/8 counter
iptables-translate -A INPUT -i iif+ ! -d 10.0.0.0/8
nft add rule ip filter INPUT iifname "iif*" ip daddr != 10.0.0.0/8 counter
+iptables-translate -I INPUT -s 10.11.12.13/255.255.0.0
+nft insert rule ip filter INPUT ip saddr 10.11.0.0/16 counter
+
+iptables-translate -I INPUT -s 10.11.12.13/255.0.255.0
+nft insert rule ip filter INPUT ip saddr & 255.0.255.0 == 10.0.12.0 counter
+
+iptables-translate -I INPUT -s 10.11.12.13/0.255.0.255
+nft insert rule ip filter INPUT ip saddr & 0.255.0.255 == 0.11.0.13 counter
+
+iptables-translate -I INPUT ! -s 10.11.12.13/0.255.0.255
+nft insert rule ip filter INPUT ip saddr & 0.255.0.255 != 0.11.0.13 counter
+
+iptables-translate -I INPUT -s 0.0.0.0/16
+nft insert rule ip filter INPUT ip saddr 0.0.0.0/16 counter
+
+iptables-translate -I INPUT -s 0.0.0.0/0
+nft insert rule ip filter INPUT counter
+
+iptables-translate -I INPUT ! -s 0.0.0.0/0
+nft insert rule ip filter INPUT ip saddr != 0.0.0.0/0 counter
+
+ip6tables-translate -I INPUT -i iifname -s feed::/16
+nft insert rule ip6 filter INPUT iifname "iifname" ip6 saddr feed::/16 counter
+
+ip6tables-translate -A INPUT -i iif+ ! -d feed::/16
+nft add rule ip6 filter INPUT iifname "iif*" ip6 daddr != feed::/16 counter
+
+ip6tables-translate -I INPUT -s feed:babe::1/ffff:ff00::
+nft insert rule ip6 filter INPUT ip6 saddr feed:ba00::/24 counter
+
+ip6tables-translate -I INPUT -s feed:babe:c0ff:ee00:c0be:1234:5678:90ab/ffff:0:ffff:0:ffff:0:ffff:0
+nft insert rule ip6 filter INPUT ip6 saddr & ffff:0:ffff:0:ffff:0:ffff:0 == feed:0:c0ff:0:c0be:0:5678:0 counter
+
+ip6tables-translate -I INPUT -s feed:babe:c0ff:ee00:c0be:1234:5678:90ab/0:ffff:0:ffff:0:ffff:0:ffff
+nft insert rule ip6 filter INPUT ip6 saddr & 0:ffff:0:ffff:0:ffff:0:ffff == 0:babe:0:ee00:0:1234:0:90ab counter
+
+ip6tables-translate -I INPUT ! -s feed:babe:c0ff:ee00:c0be:1234:5678:90ab/0:ffff:0:ffff:0:ffff:0:ffff
+nft insert rule ip6 filter INPUT ip6 saddr & 0:ffff:0:ffff:0:ffff:0:ffff != 0:babe:0:ee00:0:1234:0:90ab counter
+
+ip6tables-translate -I INPUT -s ::/16
+nft insert rule ip6 filter INPUT ip6 saddr ::/16 counter
+
+ip6tables-translate -I INPUT -s ::/0
+nft insert rule ip6 filter INPUT counter
+
+ip6tables-translate -I INPUT ! -s ::/0
+nft insert rule ip6 filter INPUT ip6 saddr != ::/0 counter
+
ebtables-translate -I INPUT -i iname --logical-in ilogname -s 0:0:0:0:0:0
nft insert rule bridge filter INPUT iifname "iname" meta ibrname "ilogname" ether saddr 00:00:00:00:00:00 counter
diff --git a/extensions/libxt_standard.t b/extensions/libxt_standard.t
index 4313f7b7bac9d..56d6da2e5884e 100644
--- a/extensions/libxt_standard.t
+++ b/extensions/libxt_standard.t
@@ -9,3 +9,15 @@
-j ACCEPT;=;OK
-j RETURN;=;OK
! -p 0 -j ACCEPT;=;FAIL
+-s 10.11.12.13/8;-s 10.0.0.0/8;OK
+-s 10.11.12.13/9;-s 10.0.0.0/9;OK
+-s 10.11.12.13/10;-s 10.0.0.0/10;OK
+-s 10.11.12.13/11;-s 10.0.0.0/11;OK
+-s 10.11.12.13/12;-s 10.0.0.0/12;OK
+-s 10.11.12.13/30;-s 10.11.12.12/30;OK
+-s 10.11.12.13/31;-s 10.11.12.12/31;OK
+-s 10.11.12.13/32;-s 10.11.12.13/32;OK
+-s 10.11.12.13/255.0.0.0;-s 10.0.0.0/8;OK
+-s 10.11.12.13/255.128.0.0;-s 10.0.0.0/9;OK
+-s 10.11.12.13/255.0.255.0;-s 10.0.12.0/255.0.255.0;OK
+-s 10.11.12.13/255.0.12.0;-s 10.0.12.0/255.0.12.0;OK
diff --git a/iptables/nft-ipv4.c b/iptables/nft-ipv4.c
index 5bd0710781533..af5db31532540 100644
--- a/iptables/nft-ipv4.c
+++ b/iptables/nft-ipv4.c
@@ -383,6 +383,32 @@ static void nft_ipv4_post_parse(int command,
" source or destination IP addresses");
}
+static void xlate_ipv4_addr(const char *selector, const struct in_addr *addr,
+ const struct in_addr *mask,
+ bool inv, struct xt_xlate *xl)
+{
+ const char *op = inv ? "!= " : "";
+ int cidr;
+
+ if (!inv && !addr->s_addr && !mask->s_addr)
+ return;
+
+ cidr = xtables_ipmask_to_cidr(mask);
+ switch (cidr) {
+ case -1:
+ /* inet_ntoa() is not reentrant */
+ xt_xlate_add(xl, "%s & %s ", selector, inet_ntoa(*mask));
+ xt_xlate_add(xl, "%s %s ", inv ? "!=" : "==", inet_ntoa(*addr));
+ break;
+ case 32:
+ xt_xlate_add(xl, "%s %s%s ", selector, op, inet_ntoa(*addr));
+ break;
+ default:
+ xt_xlate_add(xl, "%s %s%s/%d ", selector, op, inet_ntoa(*addr),
+ cidr);
+ }
+}
+
static int nft_ipv4_xlate(const void *data, struct xt_xlate *xl)
{
const struct iptables_command_state *cs = data;
@@ -417,18 +443,10 @@ static int nft_ipv4_xlate(const void *data, struct xt_xlate *xl)
}
}
- if (cs->fw.ip.src.s_addr != 0) {
- xt_xlate_add(xl, "ip saddr %s%s%s ",
- cs->fw.ip.invflags & IPT_INV_SRCIP ? "!= " : "",
- inet_ntoa(cs->fw.ip.src),
- xtables_ipmask_to_numeric(&cs->fw.ip.smsk));
- }
- if (cs->fw.ip.dst.s_addr != 0) {
- xt_xlate_add(xl, "ip daddr %s%s%s ",
- cs->fw.ip.invflags & IPT_INV_DSTIP ? "!= " : "",
- inet_ntoa(cs->fw.ip.dst),
- xtables_ipmask_to_numeric(&cs->fw.ip.dmsk));
- }
+ xlate_ipv4_addr("ip saddr", &cs->fw.ip.src, &cs->fw.ip.smsk,
+ cs->fw.ip.invflags & IPT_INV_SRCIP, xl);
+ xlate_ipv4_addr("ip daddr", &cs->fw.ip.dst, &cs->fw.ip.dmsk,
+ cs->fw.ip.invflags & IPT_INV_DSTIP, xl);
ret = xlate_matches(cs, xl);
if (!ret)
diff --git a/iptables/nft-ipv6.c b/iptables/nft-ipv6.c
index 6ece631d85f59..a5481b3f77ac5 100644
--- a/iptables/nft-ipv6.c
+++ b/iptables/nft-ipv6.c
@@ -337,14 +337,27 @@ static void xlate_ipv6_addr(const char *selector, const struct in6_addr *addr,
const struct in6_addr *mask,
int invert, struct xt_xlate *xl)
{
+ const char *op = invert ? "!= " : "";
char addr_str[INET6_ADDRSTRLEN];
+ int cidr;
- if (!invert && IN6_IS_ADDR_UNSPECIFIED(addr))
+ if (!invert && IN6_IS_ADDR_UNSPECIFIED(addr) && IN6_IS_ADDR_UNSPECIFIED(mask))
return;
inet_ntop(AF_INET6, addr, addr_str, INET6_ADDRSTRLEN);
- xt_xlate_add(xl, "%s %s%s%s ", selector, invert ? "!= " : "", addr_str,
- xtables_ip6mask_to_numeric(mask));
+ cidr = xtables_ip6mask_to_cidr(mask);
+ switch (cidr) {
+ case -1:
+ xt_xlate_add(xl, "%s & %s %s %s ", selector,
+ xtables_ip6addr_to_numeric(mask),
+ invert ? "!=" : "==", addr_str);
+ break;
+ case 128:
+ xt_xlate_add(xl, "%s %s%s ", selector, op, addr_str);
+ break;
+ default:
+ xt_xlate_add(xl, "%s %s%s/%d ", selector, op, addr_str, cidr);
+ }
}
static int nft_ipv6_xlate(const void *data, struct xt_xlate *xl)
--
2.31.1

120
SOURCES/0051-Eliminate-inet_aton-and-inet_ntoa.patch Normal file
View File

@ -0,0 +1,120 @@
From 97b85789657bab340fd7aaaf6d41b8f698f9a5b1 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 27 Apr 2021 09:12:53 +0200
Subject: [PATCH] Eliminate inet_aton() and inet_ntoa()
Both functions are obsolete, replace them by equivalent calls to
inet_pton() and inet_ntop().
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit acac2dbe64e5120394fa715bb5fe95c42d08b8b3)
---
extensions/libebt_among.c | 6 ++++--
iptables/nft-ipv4.c | 23 ++++++++++++++---------
2 files changed, 18 insertions(+), 11 deletions(-)
diff --git a/extensions/libebt_among.c b/extensions/libebt_among.c
index 2b9a1b6566684..7eb898f984bba 100644
--- a/extensions/libebt_among.c
+++ b/extensions/libebt_among.c
@@ -66,7 +66,7 @@ parse_nft_among_pair(char *buf, struct nft_among_pair *pair, bool have_ip)
if (sep) {
*sep = '\0';
- if (!inet_aton(sep + 1, &pair->in))
+ if (!inet_pton(AF_INET, sep + 1, &pair->in))
xtables_error(PARAMETER_PROBLEM,
"Invalid IP address '%s'\n", sep + 1);
}
@@ -194,6 +194,7 @@ static void __bramong_print(struct nft_among_pair *pairs,
int cnt, bool inv, bool have_ip)
{
const char *isep = inv ? "! " : "";
+ char abuf[INET_ADDRSTRLEN];
int i;
for (i = 0; i < cnt; i++) {
@@ -202,7 +203,8 @@ static void __bramong_print(struct nft_among_pair *pairs,
printf("%s", ether_ntoa(&pairs[i].ether));
if (pairs[i].in.s_addr != INADDR_ANY)
- printf("=%s", inet_ntoa(pairs[i].in));
+ printf("=%s", inet_ntop(AF_INET, &pairs[i].in,
+ abuf, sizeof(abuf)));
}
printf(" ");
}
diff --git a/iptables/nft-ipv4.c b/iptables/nft-ipv4.c
index af5db31532540..d8c48ce8817b6 100644
--- a/iptables/nft-ipv4.c
+++ b/iptables/nft-ipv4.c
@@ -136,7 +136,7 @@ static void get_frag(struct nft_xt_ctx *ctx, struct nftnl_expr *e, bool *inv)
static const char *mask_to_str(uint32_t mask)
{
- static char mask_str[sizeof("255.255.255.255")];
+ static char mask_str[INET_ADDRSTRLEN];
uint32_t bits, hmask = ntohl(mask);
struct in_addr mask_addr = {
.s_addr = mask,
@@ -155,7 +155,7 @@ static const char *mask_to_str(uint32_t mask)
if (i >= 0)
sprintf(mask_str, "%u", i);
else
- sprintf(mask_str, "%s", inet_ntoa(mask_addr));
+ inet_ntop(AF_INET, &mask_addr, mask_str, sizeof(mask_str));
return mask_str;
}
@@ -298,10 +298,13 @@ static void nft_ipv4_print_rule(struct nft_handle *h, struct nftnl_rule *r,
static void save_ipv4_addr(char letter, const struct in_addr *addr,
uint32_t mask, int invert)
{
+ char addrbuf[INET_ADDRSTRLEN];
+
if (!mask && !invert && !addr->s_addr)
return;
- printf("%s-%c %s/%s ", invert ? "! " : "", letter, inet_ntoa(*addr),
+ printf("%s-%c %s/%s ", invert ? "! " : "", letter,
+ inet_ntop(AF_INET, addr, addrbuf, sizeof(addrbuf)),
mask_to_str(mask));
}
@@ -387,25 +390,27 @@ static void xlate_ipv4_addr(const char *selector, const struct in_addr *addr,
const struct in_addr *mask,
bool inv, struct xt_xlate *xl)
{
+ char mbuf[INET_ADDRSTRLEN], abuf[INET_ADDRSTRLEN];
const char *op = inv ? "!= " : "";
int cidr;
if (!inv && !addr->s_addr && !mask->s_addr)
return;
+ inet_ntop(AF_INET, addr, abuf, sizeof(abuf));
+
cidr = xtables_ipmask_to_cidr(mask);
switch (cidr) {
case -1:
- /* inet_ntoa() is not reentrant */
- xt_xlate_add(xl, "%s & %s ", selector, inet_ntoa(*mask));
- xt_xlate_add(xl, "%s %s ", inv ? "!=" : "==", inet_ntoa(*addr));
+ xt_xlate_add(xl, "%s & %s %s %s ", selector,
+ inet_ntop(AF_INET, mask, mbuf, sizeof(mbuf)),
+ inv ? "!=" : "==", abuf);
break;
case 32:
- xt_xlate_add(xl, "%s %s%s ", selector, op, inet_ntoa(*addr));
+ xt_xlate_add(xl, "%s %s%s ", selector, op, abuf);
break;
default:
- xt_xlate_add(xl, "%s %s%s/%d ", selector, op, inet_ntoa(*addr),
- cidr);
+ xt_xlate_add(xl, "%s %s%s/%d ", selector, op, abuf, cidr);
}
}
--
2.31.1

374
SOURCES/0052-xtables-arp-Don-t-use-ARPT_INV_.patch Normal file
View File

@ -0,0 +1,374 @@
From a5d52efe21e0f0ba6447b48e1646bb7046cb09eb Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 3 Nov 2020 12:21:29 +0100
Subject: [PATCH] xtables-arp: Don't use ARPT_INV_*
Arptables invflags are partly identical to IPT_INV_* ones but the bits
are differently assigned. Eliminate this incompatibility by definition
of the unique invflags in nft-arp.h on bits that don't collide with
IPT_INV_* ones, then use those in combination with IPT_INV_* ones in
arptables-specific code.
Note that ARPT_INV_ARPPRO is replaced by IPT_INV_PROTO although these
are in fact different options - yet since '-p' option is not supported
by arptables, this does not lead to a collision.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 44457c0805905ea22b4ecf9156648e774dd29155)
---
iptables/nft-arp.c | 92 ++++++++++++++++--------------------------
iptables/nft-arp.h | 7 ++++
iptables/xtables-arp.c | 22 +++++-----
3 files changed, 53 insertions(+), 68 deletions(-)
diff --git a/iptables/nft-arp.c b/iptables/nft-arp.c
index 776b55949472b..ec8147dd58c0d 100644
--- a/iptables/nft-arp.c
+++ b/iptables/nft-arp.c
@@ -134,34 +134,34 @@ static int nft_arp_add(struct nft_handle *h, struct nftnl_rule *r, void *data)
int ret = 0;
if (fw->arp.iniface[0] != '\0') {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_VIA_IN);
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_VIA_IN);
add_iniface(r, fw->arp.iniface, op);
}
if (fw->arp.outiface[0] != '\0') {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_VIA_OUT);
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_VIA_OUT);
add_outiface(r, fw->arp.outiface, op);
}
if (fw->arp.arhrd != 0 ||
- fw->arp.invflags & ARPT_INV_ARPHRD) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_ARPHRD);
+ fw->arp.invflags & IPT_INV_ARPHRD) {
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_ARPHRD);
add_payload(r, offsetof(struct arphdr, ar_hrd), 2,
NFT_PAYLOAD_NETWORK_HEADER);
add_cmp_u16(r, fw->arp.arhrd, op);
}
if (fw->arp.arpro != 0 ||
- fw->arp.invflags & ARPT_INV_ARPPRO) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_ARPPRO);
+ fw->arp.invflags & IPT_INV_PROTO) {
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_PROTO);
add_payload(r, offsetof(struct arphdr, ar_pro), 2,
NFT_PAYLOAD_NETWORK_HEADER);
add_cmp_u16(r, fw->arp.arpro, op);
}
if (fw->arp.arhln != 0 ||
- fw->arp.invflags & ARPT_INV_ARPHLN) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_ARPHLN);
+ fw->arp.invflags & IPT_INV_ARPHLN) {
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_ARPHLN);
add_proto(r, offsetof(struct arphdr, ar_hln), 1,
fw->arp.arhln, op);
}
@@ -169,15 +169,15 @@ static int nft_arp_add(struct nft_handle *h, struct nftnl_rule *r, void *data)
add_proto(r, offsetof(struct arphdr, ar_pln), 1, 4, NFT_CMP_EQ);
if (fw->arp.arpop != 0 ||
- fw->arp.invflags & ARPT_INV_ARPOP) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_ARPOP);
+ fw->arp.invflags & IPT_INV_ARPOP) {
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_ARPOP);
add_payload(r, offsetof(struct arphdr, ar_op), 2,
NFT_PAYLOAD_NETWORK_HEADER);
add_cmp_u16(r, fw->arp.arpop, op);
}
if (need_devaddr(&fw->arp.src_devaddr)) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_SRCDEVADDR);
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_SRCDEVADDR);
add_addr(r, NFT_PAYLOAD_NETWORK_HEADER,
sizeof(struct arphdr),
&fw->arp.src_devaddr.addr,
@@ -188,8 +188,8 @@ static int nft_arp_add(struct nft_handle *h, struct nftnl_rule *r, void *data)
if (fw->arp.src.s_addr != 0 ||
fw->arp.smsk.s_addr != 0 ||
- fw->arp.invflags & ARPT_INV_SRCIP) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_SRCIP);
+ fw->arp.invflags & IPT_INV_SRCIP) {
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_SRCIP);
add_addr(r, NFT_PAYLOAD_NETWORK_HEADER,
sizeof(struct arphdr) + fw->arp.arhln,
&fw->arp.src.s_addr, &fw->arp.smsk.s_addr,
@@ -198,7 +198,7 @@ static int nft_arp_add(struct nft_handle *h, struct nftnl_rule *r, void *data)
if (need_devaddr(&fw->arp.tgt_devaddr)) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_TGTDEVADDR);
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_TGTDEVADDR);
add_addr(r, NFT_PAYLOAD_NETWORK_HEADER,
sizeof(struct arphdr) + fw->arp.arhln + sizeof(struct in_addr),
&fw->arp.tgt_devaddr.addr,
@@ -208,8 +208,8 @@ static int nft_arp_add(struct nft_handle *h, struct nftnl_rule *r, void *data)
if (fw->arp.tgt.s_addr != 0 ||
fw->arp.tmsk.s_addr != 0 ||
- fw->arp.invflags & ARPT_INV_TGTIP) {
- op = nft_invflags2cmp(fw->arp.invflags, ARPT_INV_TGTIP);
+ fw->arp.invflags & IPT_INV_DSTIP) {
+ op = nft_invflags2cmp(fw->arp.invflags, IPT_INV_DSTIP);
add_addr(r, NFT_PAYLOAD_NETWORK_HEADER,
sizeof(struct arphdr) + fw->arp.arhln + sizeof(struct in_addr) + fw->arp.arhln,
&fw->arp.tgt.s_addr, &fw->arp.tmsk.s_addr,
@@ -240,28 +240,6 @@ static int nft_arp_add(struct nft_handle *h, struct nftnl_rule *r, void *data)
return ret;
}
-static uint16_t ipt_to_arpt_flags(uint8_t invflags)
-{
- uint16_t result = 0;
-
- if (invflags & IPT_INV_VIA_IN)
- result |= ARPT_INV_VIA_IN;
-
- if (invflags & IPT_INV_VIA_OUT)
- result |= ARPT_INV_VIA_OUT;
-
- if (invflags & IPT_INV_SRCIP)
- result |= ARPT_INV_SRCIP;
-
- if (invflags & IPT_INV_DSTIP)
- result |= ARPT_INV_TGTIP;
-
- if (invflags & IPT_INV_PROTO)
- result |= ARPT_INV_ARPPRO;
-
- return result;
-}
-
static void nft_arp_parse_meta(struct nft_xt_ctx *ctx, struct nftnl_expr *e,
void *data)
{
@@ -273,7 +251,7 @@ static void nft_arp_parse_meta(struct nft_xt_ctx *ctx, struct nftnl_expr *e,
fw->arp.outiface, fw->arp.outiface_mask,
&flags);
- fw->arp.invflags |= ipt_to_arpt_flags(flags);
+ fw->arp.invflags |= flags;
}
static void nft_arp_parse_immediate(const char *jumpto, bool nft_goto,
@@ -330,33 +308,33 @@ static void nft_arp_parse_payload(struct nft_xt_ctx *ctx,
fw->arp.arhrd = ar_hrd;
fw->arp.arhrd_mask = 0xffff;
if (inv)
- fw->arp.invflags |= ARPT_INV_ARPHRD;
+ fw->arp.invflags |= IPT_INV_ARPHRD;
break;
case offsetof(struct arphdr, ar_pro):
get_cmp_data(e, &ar_pro, sizeof(ar_pro), &inv);
fw->arp.arpro = ar_pro;
fw->arp.arpro_mask = 0xffff;
if (inv)
- fw->arp.invflags |= ARPT_INV_ARPPRO;
+ fw->arp.invflags |= IPT_INV_PROTO;
break;
case offsetof(struct arphdr, ar_op):
get_cmp_data(e, &ar_op, sizeof(ar_op), &inv);
fw->arp.arpop = ar_op;
fw->arp.arpop_mask = 0xffff;
if (inv)
- fw->arp.invflags |= ARPT_INV_ARPOP;
+ fw->arp.invflags |= IPT_INV_ARPOP;
break;
case offsetof(struct arphdr, ar_hln):
get_cmp_data(e, &ar_hln, sizeof(ar_hln), &inv);
fw->arp.arhln = ar_hln;
fw->arp.arhln_mask = 0xff;
if (inv)
- fw->arp.invflags |= ARPT_INV_ARPOP;
+ fw->arp.invflags |= IPT_INV_ARPOP;
break;
default:
if (ctx->payload.offset == sizeof(struct arphdr)) {
if (nft_arp_parse_devaddr(ctx, e, &fw->arp.src_devaddr))
- fw->arp.invflags |= ARPT_INV_SRCDEVADDR;
+ fw->arp.invflags |= IPT_INV_SRCDEVADDR;
} else if (ctx->payload.offset == sizeof(struct arphdr) +
fw->arp.arhln) {
get_cmp_data(e, &addr, sizeof(addr), &inv);
@@ -371,12 +349,12 @@ static void nft_arp_parse_payload(struct nft_xt_ctx *ctx,
}
if (inv)
- fw->arp.invflags |= ARPT_INV_SRCIP;
+ fw->arp.invflags |= IPT_INV_SRCIP;
} else if (ctx->payload.offset == sizeof(struct arphdr) +
fw->arp.arhln +
sizeof(struct in_addr)) {
if (nft_arp_parse_devaddr(ctx, e, &fw->arp.tgt_devaddr))
- fw->arp.invflags |= ARPT_INV_TGTDEVADDR;
+ fw->arp.invflags |= IPT_INV_TGTDEVADDR;
} else if (ctx->payload.offset == sizeof(struct arphdr) +
fw->arp.arhln +
sizeof(struct in_addr) +
@@ -393,7 +371,7 @@ static void nft_arp_parse_payload(struct nft_xt_ctx *ctx,
}
if (inv)
- fw->arp.invflags |= ARPT_INV_TGTIP;
+ fw->arp.invflags |= IPT_INV_DSTIP;
}
break;
}
@@ -448,7 +426,7 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
else strcat(iface, "any");
}
if (print_iface) {
- printf("%s%s-i %s", sep, fw->arp.invflags & ARPT_INV_VIA_IN ?
+ printf("%s%s-i %s", sep, fw->arp.invflags & IPT_INV_VIA_IN ?
"! " : "", iface);
sep = " ";
}
@@ -466,13 +444,13 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
else strcat(iface, "any");
}
if (print_iface) {
- printf("%s%s-o %s", sep, fw->arp.invflags & ARPT_INV_VIA_OUT ?
+ printf("%s%s-o %s", sep, fw->arp.invflags & IPT_INV_VIA_OUT ?
"! " : "", iface);
sep = " ";
}
if (fw->arp.smsk.s_addr != 0L) {
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_SRCIP
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_SRCIP
? "! " : "");
if (format & FMT_NUMERIC)
sprintf(buf, "%s", addr_to_dotted(&(fw->arp.src)));
@@ -489,7 +467,7 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
break;
if (i == ARPT_DEV_ADDR_LEN_MAX)
goto after_devsrc;
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_SRCDEVADDR
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_SRCDEVADDR
? "! " : "");
printf("--src-mac ");
xtables_print_mac_and_mask((unsigned char *)fw->arp.src_devaddr.addr,
@@ -498,7 +476,7 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
after_devsrc:
if (fw->arp.tmsk.s_addr != 0L) {
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_TGTIP
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_DSTIP
? "! " : "");
if (format & FMT_NUMERIC)
sprintf(buf, "%s", addr_to_dotted(&(fw->arp.tgt)));
@@ -515,7 +493,7 @@ after_devsrc:
break;
if (i == ARPT_DEV_ADDR_LEN_MAX)
goto after_devdst;
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_TGTDEVADDR
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_TGTDEVADDR
? "! " : "");
printf("--dst-mac ");
xtables_print_mac_and_mask((unsigned char *)fw->arp.tgt_devaddr.addr,
@@ -525,7 +503,7 @@ after_devsrc:
after_devdst:
if (fw->arp.arhln_mask != 255 || fw->arp.arhln != 6) {
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_ARPHLN
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_ARPHLN
? "! " : "");
printf("--h-length %d", fw->arp.arhln);
if (fw->arp.arhln_mask != 255)
@@ -536,7 +514,7 @@ after_devdst:
if (fw->arp.arpop_mask != 0) {
int tmp = ntohs(fw->arp.arpop);
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_ARPOP
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_ARPOP
? "! " : "");
if (tmp <= NUMOPCODES && !(format & FMT_NUMERIC))
printf("--opcode %s", arp_opcodes[tmp-1]);
@@ -551,7 +529,7 @@ after_devdst:
if (fw->arp.arhrd_mask != 65535 || fw->arp.arhrd != htons(1)) {
uint16_t tmp = ntohs(fw->arp.arhrd);
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_ARPHRD
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_ARPHRD
? "! " : "");
if (tmp == 1 && !(format & FMT_NUMERIC))
printf("--h-type %s", "Ethernet");
@@ -565,7 +543,7 @@ after_devdst:
if (fw->arp.arpro_mask != 0) {
int tmp = ntohs(fw->arp.arpro);
- printf("%s%s", sep, fw->arp.invflags & ARPT_INV_ARPPRO
+ printf("%s%s", sep, fw->arp.invflags & IPT_INV_PROTO
? "! " : "");
if (tmp == 0x0800 && !(format & FMT_NUMERIC))
printf("--proto-type %s", "IPv4");
diff --git a/iptables/nft-arp.h b/iptables/nft-arp.h
index 3411fc3d7c7b3..0d93a31f563b1 100644
--- a/iptables/nft-arp.h
+++ b/iptables/nft-arp.h
@@ -4,4 +4,11 @@
extern char *arp_opcodes[];
#define NUMOPCODES 9
+/* define invflags which won't collide with IPT ones */
+#define IPT_INV_SRCDEVADDR 0x0080
+#define IPT_INV_TGTDEVADDR 0x0100
+#define IPT_INV_ARPHLN 0x0200
+#define IPT_INV_ARPOP 0x0400
+#define IPT_INV_ARPHRD 0x0800
+
#endif
diff --git a/iptables/xtables-arp.c b/iptables/xtables-arp.c
index c8196f08baa59..3f96cb22c3ec0 100644
--- a/iptables/xtables-arp.c
+++ b/iptables/xtables-arp.c
@@ -113,22 +113,22 @@ struct xtables_globals arptables_globals = {
static int inverse_for_options[] =
{
/* -n */ 0,
-/* -s */ ARPT_INV_SRCIP,
-/* -d */ ARPT_INV_TGTIP,
+/* -s */ IPT_INV_SRCIP,
+/* -d */ IPT_INV_DSTIP,
/* -p */ 0,
/* -j */ 0,
/* -v */ 0,
/* -x */ 0,
-/* -i */ ARPT_INV_VIA_IN,
-/* -o */ ARPT_INV_VIA_OUT,
+/* -i */ IPT_INV_VIA_IN,
+/* -o */ IPT_INV_VIA_OUT,
/*--line*/ 0,
/* -c */ 0,
-/* 2 */ ARPT_INV_SRCDEVADDR,
-/* 3 */ ARPT_INV_TGTDEVADDR,
-/* -l */ ARPT_INV_ARPHLN,
-/* 4 */ ARPT_INV_ARPOP,
-/* 5 */ ARPT_INV_ARPHRD,
-/* 6 */ ARPT_INV_ARPPRO,
+/* 2 */ IPT_INV_SRCDEVADDR,
+/* 3 */ IPT_INV_TGTDEVADDR,
+/* -l */ IPT_INV_ARPHLN,
+/* 4 */ IPT_INV_ARPOP,
+/* 5 */ IPT_INV_ARPHRD,
+/* 6 */ IPT_INV_PROTO,
};
/***********************************************/
@@ -903,7 +903,7 @@ int do_commandarp(struct nft_handle *h, int argc, char *argv[], char **table,
&dmasks, &ndaddrs);
if ((nsaddrs > 1 || ndaddrs > 1) &&
- (cs.arp.arp.invflags & (ARPT_INV_SRCIP | ARPT_INV_TGTIP)))
+ (cs.arp.arp.invflags & (IPT_INV_SRCIP | IPT_INV_DSTIP)))
xtables_error(PARAMETER_PROBLEM, "! not allowed with multiple"
" source or destination IP addresses");
--
2.31.1

181
SOURCES/0053-nft-arp-Make-use-of-ipv4_addr_to_string.patch Normal file
View File

@ -0,0 +1,181 @@
From 201fd565a1ce44b4af11ce9f245b2fa77c026fed Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 27 Apr 2021 10:02:34 +0200
Subject: [PATCH] nft-arp: Make use of ipv4_addr_to_string()
This eliminates quite a bit of redundant code apart from also dropping
use of obsolete function gethostbyaddr().
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 1e984079817a3c804eae25dea937d63d18c57a6c)
---
iptables/nft-arp.c | 99 ++++------------------------------------------
iptables/xshared.c | 6 +--
iptables/xshared.h | 3 ++
3 files changed, 14 insertions(+), 94 deletions(-)
diff --git a/iptables/nft-arp.c b/iptables/nft-arp.c
index ec8147dd58c0d..7c61c31a13c40 100644
--- a/iptables/nft-arp.c
+++ b/iptables/nft-arp.c
@@ -42,78 +42,6 @@ char *arp_opcodes[] =
"ARP_NAK",
};
-static char *
-addr_to_dotted(const struct in_addr *addrp)
-{
- static char buf[20];
- const unsigned char *bytep;
-
- bytep = (const unsigned char *) &(addrp->s_addr);
- sprintf(buf, "%d.%d.%d.%d", bytep[0], bytep[1], bytep[2], bytep[3]);
- return buf;
-}
-
-static char *
-addr_to_host(const struct in_addr *addr)
-{
- struct hostent *host;
-
- if ((host = gethostbyaddr((char *) addr,
- sizeof(struct in_addr), AF_INET)) != NULL)
- return (char *) host->h_name;
-
- return (char *) NULL;
-}
-
-static char *
-addr_to_network(const struct in_addr *addr)
-{
- struct netent *net;
-
- if ((net = getnetbyaddr((long) ntohl(addr->s_addr), AF_INET)) != NULL)
- return (char *) net->n_name;
-
- return (char *) NULL;
-}
-
-static char *
-addr_to_anyname(const struct in_addr *addr)
-{
- char *name;
-
- if ((name = addr_to_host(addr)) != NULL ||
- (name = addr_to_network(addr)) != NULL)
- return name;
-
- return addr_to_dotted(addr);
-}
-
-static char *
-mask_to_dotted(const struct in_addr *mask)
-{
- int i;
- static char buf[22];
- u_int32_t maskaddr, bits;
-
- maskaddr = ntohl(mask->s_addr);
-
- if (maskaddr == 0xFFFFFFFFL)
- /* we don't want to see "/32" */
- return "";
-
- i = 32;
- bits = 0xFFFFFFFEL;
- while (--i >= 0 && maskaddr != bits)
- bits <<= 1;
- if (i >= 0)
- sprintf(buf, "/%d", i);
- else
- /* mask was not a decent combination of 1's and 0's */
- snprintf(buf, sizeof(buf), "/%s", addr_to_dotted(mask));
-
- return buf;
-}
-
static bool need_devaddr(struct arpt_devaddr_info *info)
{
int i;
@@ -403,7 +331,6 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
unsigned int format)
{
const struct arpt_entry *fw = &cs->arp;
- char buf[BUFSIZ];
char iface[IFNAMSIZ+2];
const char *sep = "";
int print_iface = 0;
@@ -450,15 +377,10 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
}
if (fw->arp.smsk.s_addr != 0L) {
- printf("%s%s", sep, fw->arp.invflags & IPT_INV_SRCIP
- ? "! " : "");
- if (format & FMT_NUMERIC)
- sprintf(buf, "%s", addr_to_dotted(&(fw->arp.src)));
- else
- sprintf(buf, "%s", addr_to_anyname(&(fw->arp.src)));
- strncat(buf, mask_to_dotted(&(fw->arp.smsk)),
- sizeof(buf) - strlen(buf) - 1);
- printf("-s %s", buf);
+ printf("%s%s-s %s", sep,
+ fw->arp.invflags & IPT_INV_SRCIP ? "! " : "",
+ ipv4_addr_to_string(&fw->arp.src,
+ &fw->arp.smsk, format));
sep = " ";
}
@@ -476,15 +398,10 @@ static void nft_arp_print_rule_details(const struct iptables_command_state *cs,
after_devsrc:
if (fw->arp.tmsk.s_addr != 0L) {
- printf("%s%s", sep, fw->arp.invflags & IPT_INV_DSTIP
- ? "! " : "");
- if (format & FMT_NUMERIC)
- sprintf(buf, "%s", addr_to_dotted(&(fw->arp.tgt)));
- else
- sprintf(buf, "%s", addr_to_anyname(&(fw->arp.tgt)));
- strncat(buf, mask_to_dotted(&(fw->arp.tmsk)),
- sizeof(buf) - strlen(buf) - 1);
- printf("-d %s", buf);
+ printf("%s%s-d %s", sep,
+ fw->arp.invflags & IPT_INV_DSTIP ? "! " : "",
+ ipv4_addr_to_string(&fw->arp.tgt,
+ &fw->arp.tmsk, format));
sep = " ";
}
diff --git a/iptables/xshared.c b/iptables/xshared.c
index 16c58914e59a5..e3c8072b5ca96 100644
--- a/iptables/xshared.c
+++ b/iptables/xshared.c
@@ -546,9 +546,9 @@ void debug_print_argv(struct argv_store *store)
}
#endif
-static const char *ipv4_addr_to_string(const struct in_addr *addr,
- const struct in_addr *mask,
- unsigned int format)
+const char *ipv4_addr_to_string(const struct in_addr *addr,
+ const struct in_addr *mask,
+ unsigned int format)
{
static char buf[BUFSIZ];
diff --git a/iptables/xshared.h b/iptables/xshared.h
index 490b19ade5106..e4015c00e2a35 100644
--- a/iptables/xshared.h
+++ b/iptables/xshared.h
@@ -200,6 +200,9 @@ void debug_print_argv(struct argv_store *store);
# define debug_print_argv(...) /* nothing */
#endif
+const char *ipv4_addr_to_string(const struct in_addr *addr,
+ const struct in_addr *mask,
+ unsigned int format);
void print_ipv4_addresses(const struct ipt_entry *fw, unsigned int format);
void print_ipv6_addresses(const struct ip6t_entry *fw6, unsigned int format);
--
2.31.1

177
SOURCES/0054-extensions-SECMARK-Implement-revision-1.patch Normal file
View File

@ -0,0 +1,177 @@
From 3bd3af273ccfa550ed50ad19d4bcd04a29b88f5b Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 29 Apr 2021 15:28:59 +0200
Subject: [PATCH] extensions: SECMARK: Implement revision 1
The changed data structure for communication with kernel allows to
exclude the field 'secid' which is populated on kernel side. Thus
this fixes the formerly always failing extension comparison breaking
rule check and rule delete by content.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 616800af0da86d151cb695f1376d5ec6ede6fa72)
---
extensions/libxt_SECMARK.c | 90 +++++++++++++++++++++-------
extensions/libxt_SECMARK.t | 4 ++
include/linux/netfilter/xt_SECMARK.h | 6 ++
3 files changed, 80 insertions(+), 20 deletions(-)
create mode 100644 extensions/libxt_SECMARK.t
diff --git a/extensions/libxt_SECMARK.c b/extensions/libxt_SECMARK.c
index 6ba8606355daa..24249bd618ffe 100644
--- a/extensions/libxt_SECMARK.c
+++ b/extensions/libxt_SECMARK.c
@@ -29,6 +29,13 @@ static const struct xt_option_entry SECMARK_opts[] = {
XTOPT_TABLEEND,
};
+static const struct xt_option_entry SECMARK_opts_v1[] = {
+ {.name = "selctx", .id = O_SELCTX, .type = XTTYPE_STRING,
+ .flags = XTOPT_MAND | XTOPT_PUT,
+ XTOPT_POINTER(struct xt_secmark_target_info_v1, secctx)},
+ XTOPT_TABLEEND,
+};
+
static void SECMARK_parse(struct xt_option_call *cb)
{
struct xt_secmark_target_info *info = cb->data;
@@ -37,15 +44,23 @@ static void SECMARK_parse(struct xt_option_call *cb)
info->mode = SECMARK_MODE_SEL;
}
-static void print_secmark(const struct xt_secmark_target_info *info)
+static void SECMARK_parse_v1(struct xt_option_call *cb)
+{
+ struct xt_secmark_target_info_v1 *info = cb->data;
+
+ xtables_option_parse(cb);
+ info->mode = SECMARK_MODE_SEL;
+}
+
+static void print_secmark(__u8 mode, const char *secctx)
{
- switch (info->mode) {
+ switch (mode) {
case SECMARK_MODE_SEL:
- printf("selctx %s", info->secctx);
+ printf("selctx %s", secctx);
break;
-
+
default:
- xtables_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", info->mode);
+ xtables_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", mode);
}
}
@@ -56,7 +71,17 @@ static void SECMARK_print(const void *ip, const struct xt_entry_target *target,
(struct xt_secmark_target_info*)(target)->data;
printf(" SECMARK ");
- print_secmark(info);
+ print_secmark(info->mode, info->secctx);
+}
+
+static void SECMARK_print_v1(const void *ip,
+ const struct xt_entry_target *target, int numeric)
+{
+ const struct xt_secmark_target_info_v1 *info =
+ (struct xt_secmark_target_info_v1 *)(target)->data;
+
+ printf(" SECMARK ");
+ print_secmark(info->mode, info->secctx);
}
static void SECMARK_save(const void *ip, const struct xt_entry_target *target)
@@ -65,24 +90,49 @@ static void SECMARK_save(const void *ip, const struct xt_entry_target *target)
(struct xt_secmark_target_info*)target->data;
printf(" --");
- print_secmark(info);
+ print_secmark(info->mode, info->secctx);
}
-static struct xtables_target secmark_target = {
- .family = NFPROTO_UNSPEC,
- .name = "SECMARK",
- .version = XTABLES_VERSION,
- .revision = 0,
- .size = XT_ALIGN(sizeof(struct xt_secmark_target_info)),
- .userspacesize = XT_ALIGN(sizeof(struct xt_secmark_target_info)),
- .help = SECMARK_help,
- .print = SECMARK_print,
- .save = SECMARK_save,
- .x6_parse = SECMARK_parse,
- .x6_options = SECMARK_opts,
+static void SECMARK_save_v1(const void *ip,
+ const struct xt_entry_target *target)
+{
+ const struct xt_secmark_target_info_v1 *info =
+ (struct xt_secmark_target_info_v1 *)target->data;
+
+ printf(" --");
+ print_secmark(info->mode, info->secctx);
+}
+
+static struct xtables_target secmark_tg_reg[] = {
+ {
+ .family = NFPROTO_UNSPEC,
+ .name = "SECMARK",
+ .version = XTABLES_VERSION,
+ .revision = 0,
+ .size = XT_ALIGN(sizeof(struct xt_secmark_target_info)),
+ .userspacesize = XT_ALIGN(sizeof(struct xt_secmark_target_info)),
+ .help = SECMARK_help,
+ .print = SECMARK_print,
+ .save = SECMARK_save,
+ .x6_parse = SECMARK_parse,
+ .x6_options = SECMARK_opts,
+ },
+ {
+ .family = NFPROTO_UNSPEC,
+ .name = "SECMARK",
+ .version = XTABLES_VERSION,
+ .revision = 1,
+ .size = XT_ALIGN(sizeof(struct xt_secmark_target_info_v1)),
+ .userspacesize = XT_ALIGN(offsetof(struct xt_secmark_target_info_v1, secid)),
+ .help = SECMARK_help,
+ .print = SECMARK_print_v1,
+ .save = SECMARK_save_v1,
+ .x6_parse = SECMARK_parse_v1,
+ .x6_options = SECMARK_opts_v1,
+ }
};
void _init(void)
{
- xtables_register_target(&secmark_target);
+ xtables_register_targets(secmark_tg_reg, ARRAY_SIZE(secmark_tg_reg));
}
diff --git a/extensions/libxt_SECMARK.t b/extensions/libxt_SECMARK.t
new file mode 100644
index 0000000000000..39d4c09348bf4
--- /dev/null
+++ b/extensions/libxt_SECMARK.t
@@ -0,0 +1,4 @@
+:INPUT,FORWARD,OUTPUT
+*security
+-j SECMARK --selctx system_u:object_r:firewalld_exec_t:s0;=;OK
+-j SECMARK;;FAIL
diff --git a/include/linux/netfilter/xt_SECMARK.h b/include/linux/netfilter/xt_SECMARK.h
index 989092bd6274b..31760a286a854 100644
--- a/include/linux/netfilter/xt_SECMARK.h
+++ b/include/linux/netfilter/xt_SECMARK.h
@@ -19,4 +19,10 @@ struct xt_secmark_target_info {
char secctx[SECMARK_SECCTX_MAX];
};
+struct xt_secmark_target_info_v1 {
+ __u8 mode;
+ char secctx[SECMARK_SECCTX_MAX];
+ __u32 secid;
+};
+
#endif /*_XT_SECMARK_H_target */
--
2.31.1

80
SOURCES/0055-extensions-sctp-Fix-nftables-translation.patch Normal file
View File

@ -0,0 +1,80 @@
From b675a15b70215deab520ef1a8e52edad9129328e Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 4 May 2021 16:03:24 +0200
Subject: [PATCH] extensions: sctp: Fix nftables translation
If both sport and dport was present, incorrect nft syntax was generated.
Fixes: defc7bd2bac89 ("extensions: libxt_sctp: Add translation to nft")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit a61282ec6a1697bfb40f19d13a28a74559050167)
---
extensions/libxt_sctp.c | 10 ++++------
extensions/libxt_sctp.txlate | 10 +++++-----
2 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/extensions/libxt_sctp.c b/extensions/libxt_sctp.c
index 140de2653b1ef..ee4e99ebf11bf 100644
--- a/extensions/libxt_sctp.c
+++ b/extensions/libxt_sctp.c
@@ -495,15 +495,13 @@ static int sctp_xlate(struct xt_xlate *xl,
if (!einfo->flags)
return 0;
- xt_xlate_add(xl, "sctp ");
-
if (einfo->flags & XT_SCTP_SRC_PORTS) {
if (einfo->spts[0] != einfo->spts[1])
- xt_xlate_add(xl, "sport%s %u-%u",
+ xt_xlate_add(xl, "sctp sport%s %u-%u",
einfo->invflags & XT_SCTP_SRC_PORTS ? " !=" : "",
einfo->spts[0], einfo->spts[1]);
else
- xt_xlate_add(xl, "sport%s %u",
+ xt_xlate_add(xl, "sctp sport%s %u",
einfo->invflags & XT_SCTP_SRC_PORTS ? " !=" : "",
einfo->spts[0]);
space = " ";
@@ -511,11 +509,11 @@ static int sctp_xlate(struct xt_xlate *xl,
if (einfo->flags & XT_SCTP_DEST_PORTS) {
if (einfo->dpts[0] != einfo->dpts[1])
- xt_xlate_add(xl, "%sdport%s %u-%u", space,
+ xt_xlate_add(xl, "%ssctp dport%s %u-%u", space,
einfo->invflags & XT_SCTP_DEST_PORTS ? " !=" : "",
einfo->dpts[0], einfo->dpts[1]);
else
- xt_xlate_add(xl, "%sdport%s %u", space,
+ xt_xlate_add(xl, "%ssctp dport%s %u", space,
einfo->invflags & XT_SCTP_DEST_PORTS ? " !=" : "",
einfo->dpts[0]);
}
diff --git a/extensions/libxt_sctp.txlate b/extensions/libxt_sctp.txlate
index 72f4641ab021c..0d6c59e183675 100644
--- a/extensions/libxt_sctp.txlate
+++ b/extensions/libxt_sctp.txlate
@@ -23,16 +23,16 @@ iptables-translate -A INPUT -p sctp ! --dport 50:56 -j ACCEPT
nft add rule ip filter INPUT sctp dport != 50-56 counter accept
iptables-translate -A INPUT -p sctp --dport 80 --sport 50 -j ACCEPT
-nft add rule ip filter INPUT sctp sport 50 dport 80 counter accept
+nft add rule ip filter INPUT sctp sport 50 sctp dport 80 counter accept
iptables-translate -A INPUT -p sctp --dport 80:100 --sport 50 -j ACCEPT
-nft add rule ip filter INPUT sctp sport 50 dport 80-100 counter accept
+nft add rule ip filter INPUT sctp sport 50 sctp dport 80-100 counter accept
iptables-translate -A INPUT -p sctp --dport 80 --sport 50:55 -j ACCEPT
-nft add rule ip filter INPUT sctp sport 50-55 dport 80 counter accept
+nft add rule ip filter INPUT sctp sport 50-55 sctp dport 80 counter accept
iptables-translate -A INPUT -p sctp ! --dport 80:100 --sport 50 -j ACCEPT
-nft add rule ip filter INPUT sctp sport 50 dport != 80-100 counter accept
+nft add rule ip filter INPUT sctp sport 50 sctp dport != 80-100 counter accept
iptables-translate -A INPUT -p sctp --dport 80 ! --sport 50:55 -j ACCEPT
-nft add rule ip filter INPUT sctp sport != 50-55 dport 80 counter accept
+nft add rule ip filter INPUT sctp sport != 50-55 sctp dport 80 counter accept
--
2.31.1

159
SOURCES/0056-extensions-sctp-Translate-chunk-types-option.patch Normal file
View File

@ -0,0 +1,159 @@
From 48f38c4224f31d19176df83539501292fcc6092b Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 4 May 2021 16:26:42 +0200
Subject: [PATCH] extensions: sctp: Translate --chunk-types option
The translation is not fully complete as it is not possible to map 'any'
match type into nft syntax with a single rule. Also, 'only' match type
translation is a bit poor as it explicitly lists all chunk types that
are supposed to be missing.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 5818be177110a09120dd8fe4bd2533acbf8da301)
---
extensions/libxt_sctp.c | 91 ++++++++++++++++++++++++++++--------
extensions/libxt_sctp.txlate | 6 +++
2 files changed, 78 insertions(+), 19 deletions(-)
diff --git a/extensions/libxt_sctp.c b/extensions/libxt_sctp.c
index ee4e99ebf11bf..5d8ab85cacf42 100644
--- a/extensions/libxt_sctp.c
+++ b/extensions/libxt_sctp.c
@@ -92,28 +92,29 @@ struct sctp_chunk_names {
const char *name;
unsigned int chunk_type;
const char *valid_flags;
+ const char *nftname;
};
/*'ALL' and 'NONE' will be treated specially. */
static const struct sctp_chunk_names sctp_chunk_names[]
-= { { .name = "DATA", .chunk_type = 0, .valid_flags = "----IUBE"},
- { .name = "INIT", .chunk_type = 1, .valid_flags = "--------"},
- { .name = "INIT_ACK", .chunk_type = 2, .valid_flags = "--------"},
- { .name = "SACK", .chunk_type = 3, .valid_flags = "--------"},
- { .name = "HEARTBEAT", .chunk_type = 4, .valid_flags = "--------"},
- { .name = "HEARTBEAT_ACK", .chunk_type = 5, .valid_flags = "--------"},
- { .name = "ABORT", .chunk_type = 6, .valid_flags = "-------T"},
- { .name = "SHUTDOWN", .chunk_type = 7, .valid_flags = "--------"},
- { .name = "SHUTDOWN_ACK", .chunk_type = 8, .valid_flags = "--------"},
- { .name = "ERROR", .chunk_type = 9, .valid_flags = "--------"},
- { .name = "COOKIE_ECHO", .chunk_type = 10, .valid_flags = "--------"},
- { .name = "COOKIE_ACK", .chunk_type = 11, .valid_flags = "--------"},
- { .name = "ECN_ECNE", .chunk_type = 12, .valid_flags = "--------"},
- { .name = "ECN_CWR", .chunk_type = 13, .valid_flags = "--------"},
- { .name = "SHUTDOWN_COMPLETE", .chunk_type = 14, .valid_flags = "-------T"},
- { .name = "ASCONF", .chunk_type = 193, .valid_flags = "--------"},
- { .name = "ASCONF_ACK", .chunk_type = 128, .valid_flags = "--------"},
- { .name = "FORWARD_TSN", .chunk_type = 192, .valid_flags = "--------"},
+= { { .name = "DATA", .chunk_type = 0, .valid_flags = "----IUBE", .nftname = "data" },
+ { .name = "INIT", .chunk_type = 1, .valid_flags = "--------", .nftname = "init" },
+ { .name = "INIT_ACK", .chunk_type = 2, .valid_flags = "--------", .nftname = "init-ack" },
+ { .name = "SACK", .chunk_type = 3, .valid_flags = "--------", .nftname = "sack" },
+ { .name = "HEARTBEAT", .chunk_type = 4, .valid_flags = "--------", .nftname = "heartbeat" },
+ { .name = "HEARTBEAT_ACK", .chunk_type = 5, .valid_flags = "--------", .nftname = "heartbeat-ack" },
+ { .name = "ABORT", .chunk_type = 6, .valid_flags = "-------T", .nftname = "abort" },
+ { .name = "SHUTDOWN", .chunk_type = 7, .valid_flags = "--------", .nftname = "shutdown" },
+ { .name = "SHUTDOWN_ACK", .chunk_type = 8, .valid_flags = "--------", .nftname = "shutdown-ack" },
+ { .name = "ERROR", .chunk_type = 9, .valid_flags = "--------", .nftname = "error" },
+ { .name = "COOKIE_ECHO", .chunk_type = 10, .valid_flags = "--------", .nftname = "cookie-echo" },
+ { .name = "COOKIE_ACK", .chunk_type = 11, .valid_flags = "--------", .nftname = "cookie-ack" },
+ { .name = "ECN_ECNE", .chunk_type = 12, .valid_flags = "--------", .nftname = "ecne" },
+ { .name = "ECN_CWR", .chunk_type = 13, .valid_flags = "--------", .nftname = "cwr" },
+ { .name = "SHUTDOWN_COMPLETE", .chunk_type = 14, .valid_flags = "-------T", .nftname = "shutdown-complete" },
+ { .name = "ASCONF", .chunk_type = 193, .valid_flags = "--------", .nftname = "asconf" },
+ { .name = "ASCONF_ACK", .chunk_type = 128, .valid_flags = "--------", .nftname = "asconf-ack" },
+ { .name = "FORWARD_TSN", .chunk_type = 192, .valid_flags = "--------", .nftname = "forward-tsn" },
};
static void
@@ -485,12 +486,52 @@ static void sctp_save(const void *ip, const struct xt_entry_match *match)
}
}
+static const char *sctp_xlate_chunk(struct xt_xlate *xl, const char *space,
+ const struct xt_sctp_info *einfo,
+ const struct sctp_chunk_names *scn)
+{
+ bool inv = einfo->invflags & XT_SCTP_CHUNK_TYPES;
+ const struct xt_sctp_flag_info *flag_info = NULL;
+ int i;
+
+ if (!scn->nftname)
+ return space;
+
+ if (!SCTP_CHUNKMAP_IS_SET(einfo->chunkmap, scn->chunk_type)) {
+ if (einfo->chunk_match_type != SCTP_CHUNK_MATCH_ONLY)
+ return space;
+
+ xt_xlate_add(xl, "%ssctp chunk %s %s", space,
+ scn->nftname, inv ? "exists" : "missing");
+ return " ";
+ }
+
+ for (i = 0; i < einfo->flag_count; i++) {
+ if (einfo->flag_info[i].chunktype == scn->chunk_type) {
+ flag_info = &einfo->flag_info[i];
+ break;
+ }
+ }
+
+ if (!flag_info) {
+ xt_xlate_add(xl, "%ssctp chunk %s %s", space,
+ scn->nftname, inv ? "missing" : "exists");
+ return " ";
+ }
+
+ xt_xlate_add(xl, "%ssctp chunk %s flags & 0x%x %s 0x%x", space,
+ scn->nftname, flag_info->flag_mask,
+ inv ? "!=" : "==", flag_info->flag);
+
+ return " ";
+}
+
static int sctp_xlate(struct xt_xlate *xl,
const struct xt_xlate_mt_params *params)
{
const struct xt_sctp_info *einfo =
(const struct xt_sctp_info *)params->match->data;
- char *space = "";
+ const char *space = "";
if (!einfo->flags)
return 0;
@@ -516,6 +557,18 @@ static int sctp_xlate(struct xt_xlate *xl,
xt_xlate_add(xl, "%ssctp dport%s %u", space,
einfo->invflags & XT_SCTP_DEST_PORTS ? " !=" : "",
einfo->dpts[0]);
+ space = " ";
+ }
+
+ if (einfo->flags & XT_SCTP_CHUNK_TYPES) {
+ int i;
+
+ if (einfo->chunk_match_type == SCTP_CHUNK_MATCH_ANY)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE(sctp_chunk_names); i++)
+ space = sctp_xlate_chunk(xl, space, einfo,
+ &sctp_chunk_names[i]);
}
return 1;
diff --git a/extensions/libxt_sctp.txlate b/extensions/libxt_sctp.txlate
index 0d6c59e183675..bb817525db8d8 100644
--- a/extensions/libxt_sctp.txlate
+++ b/extensions/libxt_sctp.txlate
@@ -36,3 +36,9 @@ nft add rule ip filter INPUT sctp sport 50 sctp dport != 80-100 counter accept
iptables-translate -A INPUT -p sctp --dport 80 ! --sport 50:55 -j ACCEPT
nft add rule ip filter INPUT sctp sport != 50-55 sctp dport 80 counter accept
+
+iptables-translate -A INPUT -p sctp --chunk-types all INIT,DATA:iUbE,SACK,ABORT:T -j ACCEPT
+nft add rule ip filter INPUT sctp chunk data flags & 0xf == 0x5 sctp chunk init exists sctp chunk sack exists sctp chunk abort flags & 0x1 == 0x1 counter accept
+
+iptables-translate -A INPUT -p sctp --chunk-types only SHUTDOWN_COMPLETE -j ACCEPT
+nft add rule ip filter INPUT sctp chunk data missing sctp chunk init missing sctp chunk init-ack missing sctp chunk sack missing sctp chunk heartbeat missing sctp chunk heartbeat-ack missing sctp chunk abort missing sctp chunk shutdown missing sctp chunk shutdown-ack missing sctp chunk error missing sctp chunk cookie-echo missing sctp chunk cookie-ack missing sctp chunk ecne missing sctp chunk cwr missing sctp chunk shutdown-complete exists sctp chunk asconf missing sctp chunk asconf-ack missing sctp chunk forward-tsn missing counter accept
--
2.31.1

26
SOURCES/0057-extensions-SECMARK-Use-a-better-context-in-test-case.patch Normal file
View File

@ -0,0 +1,26 @@
From 2a45c01c4d3892871b3d3d6b67d10cb62abc561e Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Fri, 16 Jul 2021 21:51:49 +0200
Subject: [PATCH] extensions: SECMARK: Use a better context in test case
RHEL SELinux policies don't allow setting
system_u:object_r:firewalld_exec_t:s0 context. Use one instead which has
'packet_type' attribute (identified via
'seinfo -xt | grep packet_type').
---
extensions/libxt_SECMARK.t | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/extensions/libxt_SECMARK.t b/extensions/libxt_SECMARK.t
index 39d4c09348bf4..295e7a7244902 100644
--- a/extensions/libxt_SECMARK.t
+++ b/extensions/libxt_SECMARK.t
@@ -1,4 +1,4 @@
:INPUT,FORWARD,OUTPUT
*security
--j SECMARK --selctx system_u:object_r:firewalld_exec_t:s0;=;OK
+-j SECMARK --selctx system_u:object_r:ssh_server_packet_t:s0;=;OK
-j SECMARK;;FAIL
--
2.31.1

77
SOURCES/0058-nft-cache-Retry-if-kernel-returns-EINTR.patch Normal file
View File

@ -0,0 +1,77 @@
From 681cb811e4cb8c5f22fd0fae60a3533289657705 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Wed, 4 Aug 2021 17:14:05 +0200
Subject: [PATCH] nft: cache: Retry if kernel returns EINTR
In case of parallel ruleset updates, recvfrom() calls may return EINTR.
Due to the fact that cache fetches may get triggered while iterating
over cache elements, __nft_build_cache must not restart based on
comparing before and after generation ID like upstream does. Instead,
just retry the recvfrom() calls until they either succeed or return a
different error than EINTR.
---
iptables/nft-cache.c | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/iptables/nft-cache.c b/iptables/nft-cache.c
index 9623b463f0dd5..699dc66a95cd1 100644
--- a/iptables/nft-cache.c
+++ b/iptables/nft-cache.c
@@ -98,9 +98,12 @@ static int fetch_table_cache(struct nft_handle *h)
nlh = nftnl_rule_nlmsg_build_hdr(buf, NFT_MSG_GETTABLE, h->family,
NLM_F_DUMP, h->seq);
+retry:
ret = mnl_talk(h, nlh, nftnl_table_list_cb, list);
- if (ret < 0 && errno == EINTR)
+ if (ret < 0 && errno == EINTR) {
assert(nft_restart(h) >= 0);
+ goto retry;
+ }
h->cache->tables = list;
@@ -275,10 +278,11 @@ static int fetch_set_cache(struct nft_handle *h,
NLM_F_DUMP, h->seq);
}
+retry:
ret = mnl_talk(h, nlh, nftnl_set_list_cb, &d);
if (ret < 0 && errno == EINTR) {
assert(nft_restart(h) >= 0);
- return ret;
+ goto retry;
}
if (t && set) {
@@ -355,9 +359,12 @@ static int fetch_chain_cache(struct nft_handle *h,
h->seq);
}
+retry:
ret = mnl_talk(h, nlh, nftnl_chain_list_cb, &d);
- if (ret < 0 && errno == EINTR)
+ if (ret < 0 && errno == EINTR) {
assert(nft_restart(h) >= 0);
+ goto retry;
+ }
return ret;
}
@@ -404,9 +411,12 @@ static int nft_rule_list_update(struct nftnl_chain *c, void *data)
NLM_F_DUMP, h->seq);
nftnl_rule_nlmsg_build_payload(nlh, rule);
+retry:
ret = mnl_talk(h, nlh, nftnl_rule_list_cb, c);
- if (ret < 0 && errno == EINTR)
+ if (ret < 0 && errno == EINTR) {
assert(nft_restart(h) >= 0);
+ goto retry;
+ }
nftnl_rule_free(rule);
--
2.32.0

36
SPECS/iptables.spec
View File

@ -17,7 +17,7 @@ Name: iptables
Summary: Tools for managing Linux kernel packet filtering capabilities
URL: http://www.netfilter.org/projects/iptables
Version: 1.8.4
Release: 17%{?dist}
Release: 20%{?dist}
Source: %{url}/files/%{name}-%{version}.tar.bz2
Source1: iptables.init
Source2: iptables-config
@ -77,6 +77,21 @@ Patch40: 0040-extensions-libxt_CT-add-translation-for-NOTRACK.patch
Patch41: 0041-nft-Fix-command-name-in-ip6tables-error-message.patch
Patch42: 0042-tests-shell-Merge-and-extend-return-codes-test.patch
Patch43: 0043-extensions-dccp-Fix-for-DCCP-type-INVALID.patch
Patch44: 0044-xtables-monitor-Fix-ip6tables-rule-printing.patch
Patch45: 0045-xtables-monitor-fix-rule-printing.patch
Patch46: 0046-xtables-monitor-fix-packet-family-protocol.patch
Patch47: 0047-xtables-monitor-print-packet-first.patch
Patch48: 0048-xtables-monitor.patch
Patch49: 0049-nft-Fix-bitwise-expression-avoidance-detection.patch
Patch50: 0050-xtables-translate-Fix-translation-of-odd-netmasks.patch
Patch51: 0051-Eliminate-inet_aton-and-inet_ntoa.patch
Patch52: 0052-xtables-arp-Don-t-use-ARPT_INV_.patch
Patch53: 0053-nft-arp-Make-use-of-ipv4_addr_to_string.patch
Patch54: 0054-extensions-SECMARK-Implement-revision-1.patch
Patch55: 0055-extensions-sctp-Fix-nftables-translation.patch
Patch56: 0056-extensions-sctp-Translate-chunk-types-option.patch
Patch57: 0057-extensions-SECMARK-Use-a-better-context-in-test-case.patch
Patch58: 0058-nft-cache-Retry-if-kernel-returns-EINTR.patch
# pf.os: ISC license
# iptables-apply: Artistic Licence 2.0
@ -485,6 +500,25 @@ done
%doc %{_mandir}/man8/ebtables*.8*
%changelog
* Wed Aug 04 2021 Phil Sutter <psutter@redhat.com> - 1.8.4-20
- extensions: SECMARK: Use a better context in test case
- extensions: sctp: Translate --chunk-types option
- extensions: sctp: Fix nftables translation
- extensions: SECMARK: Implement revision 1
- nft: cache: Retry if kernel returns EINTR
* Fri Jun 18 2021 Phil Sutter <psutter@redhat.com> - 1.8.4-19
- Fix for rpminspect results
* Mon May 24 2021 Phil Sutter <psutter@redhat.com> - 1.8.4-18
- xtables-translate: Fix translation of odd netmasks
- nft: Fix bitwise expression avoidance detection
- xtables-monitor: 'LL=0x304' is not very convenient, print LOOPBACK instead.
- xtables-monitor: print packet first
- xtables-monitor: fix packet family protocol
- xtables-monitor: fix rule printing
- xtables-monitor: Fix ip6tables rule printing
* Thu Dec 10 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-17
- extensions: dccp: Fix for DCCP type 'INVALID'
- tests: shell: Merge and extend return codes test