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import iptables-1.8.4-15.el8

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CentOS Sources 2020-08-17 18:32:19 +00:00 committed by Andrew Lukoshko
commit f6996936c7
39 changed files with 4464 additions and 0 deletions
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2
.gitignore vendored Normal file
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SOURCES/iptables-1.8.2.tar.bz2
SOURCES/iptables-1.8.4.tar.bz2

2
.iptables.metadata Normal file
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215c4ef4c6cd29ef0dd265b4fa5ec51a4f930c92 SOURCES/iptables-1.8.2.tar.bz2
cd5fe776fb2b0479b3234758fc333777caa1239b SOURCES/iptables-1.8.4.tar.bz2

35
SOURCES/0001-iptables-apply-Use-mktemp-instead-of-tempfile.patch Normal file
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From a69b9119bde58b372acb1c3914ee90f2ed48afb8 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Mon, 17 Sep 2018 11:39:50 +0200
Subject: [PATCH] iptables-apply: Use mktemp instead of tempfile
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/iptables-apply | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/iptables/iptables-apply b/iptables/iptables-apply
index 819ca4a459c42..a685b6bbcd7dc 100755
--- a/iptables/iptables-apply
+++ b/iptables/iptables-apply
@@ -111,7 +111,7 @@ if [[ ! -r "$FILE" ]]; then
exit 2
fi
-COMMANDS=(tempfile "$SAVE" "$RESTORE")
+COMMANDS=(mktemp "$SAVE" "$RESTORE")
for cmd in "${COMMANDS[@]}"; do
if ! command -v $cmd >/dev/null; then
@@ -122,7 +122,7 @@ done
umask 0700
-TMPFILE=$(tempfile -p iptap)
+TMPFILE=$(mktemp)
trap "rm -f $TMPFILE" EXIT HUP INT QUIT ILL TRAP ABRT BUS \
FPE USR1 SEGV USR2 PIPE ALRM TERM
--
2.24.0

59
SOURCES/0002-xtables-restore-Fix-parser-feed-from-line-buffer.patch Normal file
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@ -0,0 +1,59 @@
From 25af0fd3a7edd9a9aa5ed7ed63188456ee6389ef Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Wed, 4 Dec 2019 09:56:06 +0100
Subject: [PATCH] xtables-restore: Fix parser feed from line buffer
When called with --noflush, xtables-restore would trip over chain lines:
Parser uses strtok() to separate chain name, policy and counters which
inserts nul-chars into the source string. Therefore strlen() can't be
used anymore to find end of line. Fix this by caching line length before
calling xtables_restore_parse_line().
Fixes: 09cb517949e69 ("xtables-restore: Improve performance of --noflush operation")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit a103fbfadf4c17b8b12caa57eef72deaaa71a18c)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
.../testcases/ipt-restore/0010-noflush-new-chain_0 | 10 ++++++++++
iptables/xtables-restore.c | 4 +++-
2 files changed, 13 insertions(+), 1 deletion(-)
create mode 100755 iptables/tests/shell/testcases/ipt-restore/0010-noflush-new-chain_0
diff --git a/iptables/tests/shell/testcases/ipt-restore/0010-noflush-new-chain_0 b/iptables/tests/shell/testcases/ipt-restore/0010-noflush-new-chain_0
new file mode 100755
index 0000000000000..739e684a21183
--- /dev/null
+++ b/iptables/tests/shell/testcases/ipt-restore/0010-noflush-new-chain_0
@@ -0,0 +1,10 @@
+#!/bin/sh -e
+
+# assert input feed from buffer doesn't trip over
+# added nul-chars from parsing chain line.
+
+$XT_MULTI iptables-restore --noflush <<EOF
+*filter
+:foobar - [0:0]
+-A foobar -j ACCEPT
+COMMIT
diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c
index 2f0fe7d439d94..dd907e0b8ddd5 100644
--- a/iptables/xtables-restore.c
+++ b/iptables/xtables-restore.c
@@ -327,10 +327,12 @@ void xtables_restore_parse(struct nft_handle *h,
line = 0;
ptr = preload_buffer;
while (*ptr) {
+ size_t len = strlen(ptr);
+
h->error.lineno = ++line;
DEBUGP("%s: buffered line %d: '%s'\n", __func__, line, ptr);
xtables_restore_parse_line(h, p, &state, ptr);
- ptr += strlen(ptr) + 1;
+ ptr += len + 1;
}
if (*buffer) {
h->error.lineno = ++line;
--
2.24.0

61
SOURCES/0003-extensions-format-security-fixes-in-libip-6-t_icmp.patch Normal file
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@ -0,0 +1,61 @@
From 7e63dd95957a264d15eefdda3ea9449a6c72eb86 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adam=20Go=C5=82=C4=99biowski?= <adamg@pld-linux.org>
Date: Wed, 14 Nov 2018 07:35:28 +0100
Subject: [PATCH] extensions: format-security fixes in libip[6]t_icmp
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
commit 61d6c3834de3 ("xtables: add 'printf' attribute to xlate_add")
introduced support for gcc feature to check format string against passed
argument. This commit adds missing bits to extenstions's libipt_icmp.c
and libip6t_icmp6.c that were causing build to fail.
Fixes: 61d6c3834de3 ("xtables: add 'printf' attribute to xlate_add")
Signed-off-by: Adam Gołębiowski <adamg@pld-linux.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit 907e429d7548157016cd51aba4adc5d0c7d9f816)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/libip6t_icmp6.c | 4 ++--
extensions/libipt_icmp.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/extensions/libip6t_icmp6.c b/extensions/libip6t_icmp6.c
index 45a71875722c4..cc7bfaeb72fd7 100644
--- a/extensions/libip6t_icmp6.c
+++ b/extensions/libip6t_icmp6.c
@@ -230,7 +230,7 @@ static unsigned int type_xlate_print(struct xt_xlate *xl, unsigned int icmptype,
type_name = icmp6_type_xlate(icmptype);
if (type_name) {
- xt_xlate_add(xl, type_name);
+ xt_xlate_add(xl, "%s", type_name);
} else {
for (i = 0; i < ARRAY_SIZE(icmpv6_codes); ++i)
if (icmpv6_codes[i].type == icmptype &&
@@ -239,7 +239,7 @@ static unsigned int type_xlate_print(struct xt_xlate *xl, unsigned int icmptype,
break;
if (i != ARRAY_SIZE(icmpv6_codes))
- xt_xlate_add(xl, icmpv6_codes[i].name);
+ xt_xlate_add(xl, "%s", icmpv6_codes[i].name);
else
return 0;
}
diff --git a/extensions/libipt_icmp.c b/extensions/libipt_icmp.c
index 5418997668d4c..e76257c54708c 100644
--- a/extensions/libipt_icmp.c
+++ b/extensions/libipt_icmp.c
@@ -236,7 +236,7 @@ static unsigned int type_xlate_print(struct xt_xlate *xl, unsigned int icmptype,
if (icmp_codes[i].type == icmptype &&
icmp_codes[i].code_min == code_min &&
icmp_codes[i].code_max == code_max) {
- xt_xlate_add(xl, icmp_codes[i].name);
+ xt_xlate_add(xl, "%s", icmp_codes[i].name);
return 1;
}
}
--
2.21.0

31
SOURCES/0003-xtables-restore-Avoid-access-of-uninitialized-data.patch Normal file
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From 5ee8338b9f1b5c02efca1a33185cf648cdf1aa20 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 5 Dec 2019 11:40:26 +0100
Subject: [PATCH] xtables-restore: Avoid access of uninitialized data
When flushing, 'buffer' is not written to prior to checking its first
byte's value. Therefore it needs to be initialized upon declaration.
Fixes: 09cb517949e69 ("xtables-restore: Improve performance of --noflush operation")
(cherry picked from commit 48be21bf39f9af35d53af0e211cbd50dcfd12d08)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-restore.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c
index dd907e0b8ddd5..63cc15cee9621 100644
--- a/iptables/xtables-restore.c
+++ b/iptables/xtables-restore.c
@@ -281,7 +281,7 @@ void xtables_restore_parse(struct nft_handle *h,
const struct nft_xt_restore_parse *p)
{
struct nft_xt_restore_state state = {};
- char preload_buffer[PREBUFSIZ] = {}, buffer[10240], *ptr;
+ char preload_buffer[PREBUFSIZ] = {}, buffer[10240] = {}, *ptr;
if (!h->noflush) {
nft_fake_cache(h);
--
2.24.0

31
SOURCES/0004-extensions-time-Avoid-undefined-shift.patch Normal file
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@ -0,0 +1,31 @@
From bda4f46d1a474e5cc13712a0302adcf723e3cc5c Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 5 Dec 2019 13:15:01 +0100
Subject: [PATCH] extensions: time: Avoid undefined shift
Value 1 is signed by default and left-shifting by 31 is undefined for
those. Fix this by marking the value as unsigned.
Fixes: ad326ef9f734a ("Add the libxt_time iptables match")
(cherry picked from commit 98b221002960040bf3505811c06025b6b9b6984b)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/libxt_time.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/extensions/libxt_time.c b/extensions/libxt_time.c
index 5a8cc5de13031..d001f5b7f448f 100644
--- a/extensions/libxt_time.c
+++ b/extensions/libxt_time.c
@@ -330,7 +330,7 @@ static void time_print_monthdays(uint32_t mask, bool human_readable)
printf(" ");
for (i = 1; i <= 31; ++i)
- if (mask & (1 << i)) {
+ if (mask & (1u << i)) {
if (nbdays++ > 0)
printf(",");
printf("%u", i);
--
2.24.0

31
SOURCES/0005-extensions-cluster-Avoid-undefined-shift.patch Normal file
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@ -0,0 +1,31 @@
From 45aacdc1bbb3a889d9820c1fb587dc8df3cae763 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 5 Dec 2019 13:36:31 +0100
Subject: [PATCH] extensions: cluster: Avoid undefined shift
Value 1 is signed by default and left-shifting by 31 is undefined for
those. Fix this by marking the value as unsigned.
Fixes: 64a0e09894e52 ("extensions: libxt_cluster: Add translation to nft")
(cherry picked from commit 28c16371cdad16707674450b59919e3d97185694)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/libxt_cluster.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/extensions/libxt_cluster.c b/extensions/libxt_cluster.c
index c9c35ee22e3df..d164bf6960166 100644
--- a/extensions/libxt_cluster.c
+++ b/extensions/libxt_cluster.c
@@ -156,7 +156,7 @@ static int cluster_xlate(struct xt_xlate *xl,
xt_xlate_add(xl, "%s %u seed 0x%08x ", jhash_st,
info->total_nodes, info->hash_seed);
for (node = 0; node < 32; node++) {
- if (info->node_mask & (1 << node)) {
+ if (info->node_mask & (1u << node)) {
if (needs_set == 0) {
xt_xlate_add(xl, "{ ");
needs_set = 1;
--
2.24.0

32
SOURCES/0006-libxtables-Avoid-buffer-overrun-in-xtables_compatibl.patch Normal file
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@ -0,0 +1,32 @@
From d3641eaed9ad19b74f3bababb3db53af0004488b Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 5 Dec 2019 13:57:18 +0100
Subject: [PATCH] libxtables: Avoid buffer overrun in
xtables_compatible_revision()
The function is exported and accepts arbitrary strings as input. Calling
strcpy() without length checks is not OK.
(cherry picked from commit f7d3dbb82e7ed94ccbf10cf70a3c7b3f3aaef1a1)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
libxtables/xtables.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libxtables/xtables.c b/libxtables/xtables.c
index 895f6988eaf57..777c2b08e9896 100644
--- a/libxtables/xtables.c
+++ b/libxtables/xtables.c
@@ -856,7 +856,8 @@ int xtables_compatible_revision(const char *name, uint8_t revision, int opt)
xtables_load_ko(xtables_modprobe_program, true);
- strcpy(rev.name, name);
+ strncpy(rev.name, name, XT_EXTENSION_MAXNAMELEN - 1);
+ rev.name[XT_EXTENSION_MAXNAMELEN - 1] = '\0';
rev.revision = revision;
max_rev = getsockopt(sockfd, afinfo->ipproto, opt, &rev, &s);
--
2.24.0

40
SOURCES/0007-xtables-translate-Guard-strcpy-call-in-xlate_ifname.patch Normal file
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@ -0,0 +1,40 @@
From 5fe54ca701a38e283faf840903e9ed20eba8a6f4 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 5 Dec 2019 16:01:29 +0100
Subject: [PATCH] xtables-translate: Guard strcpy() call in xlate_ifname()
The function potentially fed overlong strings to strcpy(). Given that
everything needed to avoid this is there, reorder code a bit to prevent
those inputs, too.
Fixes: 0ddd663e9c167 ("iptables-translate: add in/out ifname wildcard match translation to nft")
(cherry picked from commit 2861bdbbf062071487a49103513d129ce40e2652)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-translate.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/iptables/xtables-translate.c b/iptables/xtables-translate.c
index a42c60a3b64c6..77a186b905d73 100644
--- a/iptables/xtables-translate.c
+++ b/iptables/xtables-translate.c
@@ -32,14 +32,13 @@
void xlate_ifname(struct xt_xlate *xl, const char *nftmeta, const char *ifname,
bool invert)
{
+ int ifaclen = strlen(ifname);
char iface[IFNAMSIZ];
- int ifaclen;
- if (ifname[0] == '\0')
+ if (ifaclen < 1 || ifaclen >= IFNAMSIZ)
return;
strcpy(iface, ifname);
- ifaclen = strlen(iface);
if (iface[ifaclen - 1] == '+')
iface[ifaclen - 1] = '*';
--
2.24.0

41
SOURCES/0008-extensions-among-Check-call-to-fstat.patch Normal file
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@ -0,0 +1,41 @@
From 3a4d59e5cb35cf2395cfd8004dd16d45dd889e11 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 5 Dec 2019 16:35:51 +0100
Subject: [PATCH] extensions: among: Check call to fstat()
If this fails, a bogus length value may be passed to mmap().
Fixes: 26753888720d8 ("nft: bridge: Rudimental among extension support")
(cherry picked from commit 25b38bcbf2fdc019f438805c7d1ecd877af9c968)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/libebt_among.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/extensions/libebt_among.c b/extensions/libebt_among.c
index 2e87db3bc06fa..715d559f432c2 100644
--- a/extensions/libebt_among.c
+++ b/extensions/libebt_among.c
@@ -6,6 +6,7 @@
* August, 2003
*/
+#include <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <getopt.h>
@@ -137,7 +138,10 @@ static int bramong_parse(int c, char **argv, int invert,
if ((fd = open(optarg, O_RDONLY)) == -1)
xtables_error(PARAMETER_PROBLEM,
"Couldn't open file '%s'", optarg);
- fstat(fd, &stats);
+ if (fstat(fd, &stats) < 0)
+ xtables_error(PARAMETER_PROBLEM,
+ "fstat(%s) failed: '%s'",
+ optarg, strerror(errno));
flen = stats.st_size;
/* use mmap because the file will probably be big */
optarg = mmap(0, flen, PROT_READ | PROT_WRITE,
--
2.24.0

43
SOURCES/0009-uapi-netfilter-Avoid-undefined-left-shift-in-xt_sctp.patch Normal file
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@ -0,0 +1,43 @@
From fe1ac5eaa8ae482c9112aed6b89f9f2e529f4516 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Tue, 10 Dec 2019 12:27:13 +0100
Subject: [PATCH] uapi: netfilter: Avoid undefined left-shift in xt_sctp.h
This is a backport of kernel commit 164166558aace ("netfilter: uapi:
Avoid undefined left-shift in xt_sctp.h").
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
include/linux/netfilter/xt_sctp.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/netfilter/xt_sctp.h b/include/linux/netfilter/xt_sctp.h
index a501e6196905d..5b28525a2482a 100644
--- a/include/linux/netfilter/xt_sctp.h
+++ b/include/linux/netfilter/xt_sctp.h
@@ -40,19 +40,19 @@ struct xt_sctp_info {
#define SCTP_CHUNKMAP_SET(chunkmap, type) \
do { \
(chunkmap)[type / bytes(__u32)] |= \
- 1 << (type % bytes(__u32)); \
+ 1u << (type % bytes(__u32)); \
} while (0)
#define SCTP_CHUNKMAP_CLEAR(chunkmap, type) \
do { \
(chunkmap)[type / bytes(__u32)] &= \
- ~(1 << (type % bytes(__u32))); \
+ ~(1u << (type % bytes(__u32))); \
} while (0)
#define SCTP_CHUNKMAP_IS_SET(chunkmap, type) \
({ \
((chunkmap)[type / bytes (__u32)] & \
- (1 << (type % bytes (__u32)))) ? 1: 0; \
+ (1u << (type % bytes (__u32)))) ? 1: 0; \
})
#define SCTP_CHUNKMAP_RESET(chunkmap) \
--
2.24.0

98
SOURCES/0010-xtables-translate-Fix-for-interface-name-corner-case.patch Normal file
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@ -0,0 +1,98 @@
From da36213a48f6114ab998a5fb37bae61d2a02d5f6 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 6 Feb 2020 15:08:41 +0100
Subject: [PATCH] xtables-translate: Fix for interface name corner-cases
There are two special situations xlate_ifname() didn't cover for:
* Interface name containing '*': This went unchanged, creating a command
nft wouldn't accept. Instead translate into '\*' which doesn't change
semantics.
* Interface name being '+': Can't translate into nft wildcard character
as nft doesn't accept asterisk-only interface names. Instead decide
what to do based on 'invert' value: Skip match creation if false,
match against an invalid interface name if true.
Also add a test to make sure future changes to this behaviour are
noticed.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit e179e87a1179e272a9bdabb0220b17d61d099ee3)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/generic.txlate | 12 ++++++++++++
iptables/xtables-translate.c | 33 ++++++++++++++++++++++++++++-----
2 files changed, 40 insertions(+), 5 deletions(-)
diff --git a/extensions/generic.txlate b/extensions/generic.txlate
index b38fbd1fe113b..c92d082abea78 100644
--- a/extensions/generic.txlate
+++ b/extensions/generic.txlate
@@ -18,3 +18,15 @@ nft add rule bridge filter FORWARD iifname != "iname" meta ibrname "ilogname" oi
ebtables-translate -I INPUT -p ip -d 1:2:3:4:5:6/ff:ff:ff:ff:00:00
nft insert rule bridge filter INPUT ether type 0x800 ether daddr 01:02:03:04:00:00 and ff:ff:ff:ff:00:00 == 01:02:03:04:00:00 counter
+
+# asterisk is not special in iptables and it is even a valid interface name
+iptables-translate -A FORWARD -i '*' -o 'eth*foo'
+nft add rule ip filter FORWARD iifname "\*" oifname "eth\*foo" counter
+
+# skip for always matching interface names
+iptables-translate -A FORWARD -i '+'
+nft add rule ip filter FORWARD counter
+
+# match against invalid interface name to simulate never matching rule
+iptables-translate -A FORWARD ! -i '+'
+nft add rule ip filter FORWARD iifname "INVAL/D" counter
diff --git a/iptables/xtables-translate.c b/iptables/xtables-translate.c
index 77a186b905d73..c4e177c0d63ba 100644
--- a/iptables/xtables-translate.c
+++ b/iptables/xtables-translate.c
@@ -32,15 +32,38 @@
void xlate_ifname(struct xt_xlate *xl, const char *nftmeta, const char *ifname,
bool invert)
{
- int ifaclen = strlen(ifname);
- char iface[IFNAMSIZ];
+ int ifaclen = strlen(ifname), i, j;
+ char iface[IFNAMSIZ * 2];
if (ifaclen < 1 || ifaclen >= IFNAMSIZ)
return;
- strcpy(iface, ifname);
- if (iface[ifaclen - 1] == '+')
- iface[ifaclen - 1] = '*';
+ for (i = 0, j = 0; i < ifaclen + 1; i++, j++) {
+ switch (ifname[i]) {
+ case '+':
+ iface[j] = '*';
+ break;
+ case '*':
+ iface[j++] = '\\';
+ /* fall through */
+ default:
+ iface[j] = ifname[i];
+ break;
+ }
+ }
+
+ if (ifaclen == 1 && ifname[0] == '+') {
+ /* Nftables does not support wildcard only string. Workaround
+ * is easy, given that this will match always or never
+ * depending on 'invert' value. To match always, simply don't
+ * generate an expression. To match never, use an invalid
+ * interface name (kernel doesn't accept '/' in names) to match
+ * against. */
+ if (!invert)
+ return;
+ strcpy(iface, "INVAL/D");
+ invert = false;
+ }
xt_xlate_add(xl, "%s %s\"%s\" ", nftmeta, invert ? "!= " : "", iface);
}
--
2.24.1

60
SOURCES/0011-xtables-translate-Fix-for-iface.patch Normal file
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@ -0,0 +1,60 @@
From 1e1fda9ac0a809c64fd13b4fb759becac824809e Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 13 Feb 2020 14:01:50 +0100
Subject: [PATCH] xtables-translate: Fix for iface++
In legacy iptables, only the last plus sign remains special, any
previous ones are taken literally. Therefore xtables-translate must not
replace all of them with asterisk but just the last one.
Fixes: e179e87a1179e ("xtables-translate: Fix for interface name corner-cases")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 94488d4eb912f5af4c88d148b39b38eb8a3c1f0b)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/generic.txlate | 4 ++++
iptables/xtables-translate.c | 6 +++---
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/extensions/generic.txlate b/extensions/generic.txlate
index c92d082abea78..0e256c3727559 100644
--- a/extensions/generic.txlate
+++ b/extensions/generic.txlate
@@ -23,6 +23,10 @@ nft insert rule bridge filter INPUT ether type 0x800 ether daddr 01:02:03:04:00:
iptables-translate -A FORWARD -i '*' -o 'eth*foo'
nft add rule ip filter FORWARD iifname "\*" oifname "eth\*foo" counter
+# escape all asterisks but translate only the first plus character
+iptables-translate -A FORWARD -i 'eth*foo*+' -o 'eth++'
+nft add rule ip filter FORWARD iifname "eth\*foo\**" oifname "eth+*" counter
+
# skip for always matching interface names
iptables-translate -A FORWARD -i '+'
nft add rule ip filter FORWARD counter
diff --git a/iptables/xtables-translate.c b/iptables/xtables-translate.c
index c4e177c0d63ba..0f95855b41aa4 100644
--- a/iptables/xtables-translate.c
+++ b/iptables/xtables-translate.c
@@ -40,9 +40,6 @@ void xlate_ifname(struct xt_xlate *xl, const char *nftmeta, const char *ifname,
for (i = 0, j = 0; i < ifaclen + 1; i++, j++) {
switch (ifname[i]) {
- case '+':
- iface[j] = '*';
- break;
case '*':
iface[j++] = '\\';
/* fall through */
@@ -65,6 +62,9 @@ void xlate_ifname(struct xt_xlate *xl, const char *nftmeta, const char *ifname,
invert = false;
}
+ if (iface[j - 2] == '+')
+ iface[j - 2] = '*';
+
xt_xlate_add(xl, "%s %s\"%s\" ", nftmeta, invert ? "!= " : "", iface);
}
--
2.24.1

366
SOURCES/0012-tests-shell-Fix-skip-checks-with-host-mode.patch Normal file
View File

@ -0,0 +1,366 @@
From bbd2dd9ee6db7d11ab5b2b10a63b3dfd8b8acc9d Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Wed, 12 Feb 2020 21:26:06 +0100
Subject: [PATCH] tests: shell: Fix skip checks with --host mode
When testing host binaries, XT_MULTI variable contains just the program
name without path component which most skip checks didn't expect. Fix
them, and while being at it also reduce indenting level in two scripts
by moving the skip check up front with an early exit call.
Fixes: 416898e335322 ("tests/shell: Support testing host binaries")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 2b2b7948c1960ba4680677664ff58477be869de6)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
.../arptables/0001-arptables-save-restore_0 | 2 +-
.../0002-arptables-restore-defaults_0 | 2 +-
.../arptables/0003-arptables-verbose-output_0 | 2 +-
.../testcases/ebtables/0001-ebtables-basic_0 | 135 +++++++++---------
.../ebtables/0002-ebtables-save-restore_0 | 2 +-
.../ebtables/0003-ebtables-restore-defaults_0 | 2 +-
.../testcases/ebtables/0004-save-counters_0 | 2 +-
.../testcases/ebtables/0005-ifnamechecks_0 | 2 +-
.../firewalld-restore/0001-firewalld_0 | 2 +-
.../testcases/ipt-restore/0004-restore-race_0 | 2 +-
.../shell/testcases/nft-only/0001compat_0 | 15 +-
.../shell/testcases/nft-only/0002invflags_0 | 2 +-
.../nft-only/0003delete-with-comment_0 | 2 +-
13 files changed, 88 insertions(+), 84 deletions(-)
diff --git a/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0 b/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0
index bf04dc0a3e15a..e64e9142ee98b 100755
--- a/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0
+++ b/iptables/tests/shell/testcases/arptables/0001-arptables-save-restore_0
@@ -4,7 +4,7 @@ set -e
#set -x
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
# fill arptables manually
diff --git a/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0 b/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0
index 38d387f327ebb..afd0fcb460d85 100755
--- a/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0
+++ b/iptables/tests/shell/testcases/arptables/0002-arptables-restore-defaults_0
@@ -3,7 +3,7 @@
set -e
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
# arptables-restore reuses preloaded targets and matches, make sure defaults
# apply to consecutive rules using the same target/match as a previous one
diff --git a/iptables/tests/shell/testcases/arptables/0003-arptables-verbose-output_0 b/iptables/tests/shell/testcases/arptables/0003-arptables-verbose-output_0
index 10c5ec33ada2c..952cfa7898371 100755
--- a/iptables/tests/shell/testcases/arptables/0003-arptables-verbose-output_0
+++ b/iptables/tests/shell/testcases/arptables/0003-arptables-verbose-output_0
@@ -4,7 +4,7 @@ set -e
set -x
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
$XT_MULTI arptables -N foo
diff --git a/iptables/tests/shell/testcases/ebtables/0001-ebtables-basic_0 b/iptables/tests/shell/testcases/ebtables/0001-ebtables-basic_0
index c7f24a383f698..0c1eb4ca66f52 100755
--- a/iptables/tests/shell/testcases/ebtables/0001-ebtables-basic_0
+++ b/iptables/tests/shell/testcases/ebtables/0001-ebtables-basic_0
@@ -1,86 +1,89 @@
#!/bin/sh
+case "$XT_MULTI" in
+*xtables-nft-multi)
+ ;;
+*)
+ echo "skip $XT_MULTI"
+ exit 0
+ ;;
+esac
+
get_entries_count() { # (chain)
$XT_MULTI ebtables -L $1 | sed -n 's/.*entries: \([0-9]*\).*/\1/p'
}
set -x
-case "$XT_MULTI" in
-*/xtables-nft-multi)
- for t in filter nat;do
- $XT_MULTI ebtables -t $t -L || exit 1
- $XT_MULTI ebtables -t $t -X || exit 1
- $XT_MULTI ebtables -t $t -F || exit 1
- done
-
- for t in broute foobar ;do
- $XT_MULTI ebtables -t $t -L &&
- $XT_MULTI ebtables -t $t -X &&
- $XT_MULTI ebtables -t $t -F
- if [ $? -eq 0 ]; then
- echo "Expect nonzero return for unsupported table"
- exit 1
- fi
- done
+for t in filter nat;do
+ $XT_MULTI ebtables -t $t -L || exit 1
+ $XT_MULTI ebtables -t $t -X || exit 1
+ $XT_MULTI ebtables -t $t -F || exit 1
+done
- $XT_MULTI ebtables -t filter -N FOO || exit 1
- $XT_MULTI ebtables -t filter -N FOO
+for t in broute foobar ;do
+ $XT_MULTI ebtables -t $t -L &&
+ $XT_MULTI ebtables -t $t -X &&
+ $XT_MULTI ebtables -t $t -F
if [ $? -eq 0 ]; then
- echo "Duplicate chain FOO"
- $XT_MULTI ebtables -t filter -L
+ echo "Expect nonzero return for unsupported table"
exit 1
fi
+done
- entries=$(get_entries_count FOO)
- if [ $entries -ne 0 ]; then
- echo "Unexpected entries count in empty unreferenced chain (expected 0, have $entries)"
- $XT_MULTI ebtables -L
- exit 1
- fi
- $XT_MULTI ebtables -A FORWARD -j FOO
- entries=$(get_entries_count FORWARD)
- if [ $entries -ne 1 ]; then
- echo "Unexpected entries count in FORWARD chain (expected 1, have $entries)"
- $XT_MULTI ebtables -L
- exit 1
- fi
+$XT_MULTI ebtables -t filter -N FOO || exit 1
+$XT_MULTI ebtables -t filter -N FOO
+if [ $? -eq 0 ]; then
+ echo "Duplicate chain FOO"
+ $XT_MULTI ebtables -t filter -L
+ exit 1
+fi
- entries=$(get_entries_count FOO)
- if [ $entries -ne 0 ]; then
- echo "Unexpected entries count in empty referenced chain (expected 0, have $entries)"
- $XT_MULTI ebtables -L
- exit 1
- fi
+entries=$(get_entries_count FOO)
+if [ $entries -ne 0 ]; then
+ echo "Unexpected entries count in empty unreferenced chain (expected 0, have $entries)"
+ $XT_MULTI ebtables -L
+ exit 1
+fi
- $XT_MULTI ebtables -A FOO -j ACCEPT
- entries=$(get_entries_count FOO)
- if [ $entries -ne 1 ]; then
- echo "Unexpected entries count in non-empty referenced chain (expected 1, have $entries)"
- $XT_MULTI ebtables -L
- exit 1
- fi
+$XT_MULTI ebtables -A FORWARD -j FOO
+entries=$(get_entries_count FORWARD)
+if [ $entries -ne 1 ]; then
+ echo "Unexpected entries count in FORWARD chain (expected 1, have $entries)"
+ $XT_MULTI ebtables -L
+ exit 1
+fi
- $XT_MULTI ebtables -t filter -N BAR || exit 1
- $XT_MULTI ebtables -t filter -N BAZ || exit 1
+entries=$(get_entries_count FOO)
+if [ $entries -ne 0 ]; then
+ echo "Unexpected entries count in empty referenced chain (expected 0, have $entries)"
+ $XT_MULTI ebtables -L
+ exit 1
+fi
- $XT_MULTI ebtables -t filter -L | grep -q FOO || exit 1
- $XT_MULTI ebtables -t filter -L | grep -q BAR || exit 1
- $XT_MULTI ebtables -t filter -L | grep -q BAZ || exit 1
+$XT_MULTI ebtables -A FOO -j ACCEPT
+entries=$(get_entries_count FOO)
+if [ $entries -ne 1 ]; then
+ echo "Unexpected entries count in non-empty referenced chain (expected 1, have $entries)"
+ $XT_MULTI ebtables -L
+ exit 1
+fi
- $XT_MULTI ebtables -t filter -L BAZ || exit 1
- $XT_MULTI ebtables -t filter -X BAZ || exit 1
- $XT_MULTI ebtables -t filter -L BAZ | grep -q BAZ
- if [ $? -eq 0 ]; then
- echo "Deleted chain -L BAZ ok, expected failure"
- $XT_MULTI ebtables -t filter -L
- exit 1
- fi
+$XT_MULTI ebtables -t filter -N BAR || exit 1
+$XT_MULTI ebtables -t filter -N BAZ || exit 1
- $XT_MULTI ebtables -t $t -F || exit 0
- ;;
-*)
- echo "skip $XT_MULTI"
- ;;
-esac
+$XT_MULTI ebtables -t filter -L | grep -q FOO || exit 1
+$XT_MULTI ebtables -t filter -L | grep -q BAR || exit 1
+$XT_MULTI ebtables -t filter -L | grep -q BAZ || exit 1
+
+$XT_MULTI ebtables -t filter -L BAZ || exit 1
+$XT_MULTI ebtables -t filter -X BAZ || exit 1
+$XT_MULTI ebtables -t filter -L BAZ | grep -q BAZ
+if [ $? -eq 0 ]; then
+ echo "Deleted chain -L BAZ ok, expected failure"
+ $XT_MULTI ebtables -t filter -L
+ exit 1
+fi
+
+$XT_MULTI ebtables -t $t -F || exit 0
diff --git a/iptables/tests/shell/testcases/ebtables/0002-ebtables-save-restore_0 b/iptables/tests/shell/testcases/ebtables/0002-ebtables-save-restore_0
index e18d46551509d..b84f63a7c3672 100755
--- a/iptables/tests/shell/testcases/ebtables/0002-ebtables-save-restore_0
+++ b/iptables/tests/shell/testcases/ebtables/0002-ebtables-save-restore_0
@@ -4,7 +4,7 @@ set -e
#set -x
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
# fill ebtables manually
diff --git a/iptables/tests/shell/testcases/ebtables/0003-ebtables-restore-defaults_0 b/iptables/tests/shell/testcases/ebtables/0003-ebtables-restore-defaults_0
index 62d224134456b..63891c1bb731a 100755
--- a/iptables/tests/shell/testcases/ebtables/0003-ebtables-restore-defaults_0
+++ b/iptables/tests/shell/testcases/ebtables/0003-ebtables-restore-defaults_0
@@ -3,7 +3,7 @@
set -e
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
# ebtables-restore reuses preloaded targets and matches, make sure defaults
# apply to consecutive rules using the same target/match as a previous one
diff --git a/iptables/tests/shell/testcases/ebtables/0004-save-counters_0 b/iptables/tests/shell/testcases/ebtables/0004-save-counters_0
index 46966f433139a..d52db900604ef 100755
--- a/iptables/tests/shell/testcases/ebtables/0004-save-counters_0
+++ b/iptables/tests/shell/testcases/ebtables/0004-save-counters_0
@@ -3,7 +3,7 @@
set -e
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
$XT_MULTI ebtables --init-table
$XT_MULTI ebtables -A FORWARD -i nodev123 -o nodev432 -j ACCEPT
diff --git a/iptables/tests/shell/testcases/ebtables/0005-ifnamechecks_0 b/iptables/tests/shell/testcases/ebtables/0005-ifnamechecks_0
index 2163d364b318b..0b3acfd7613db 100755
--- a/iptables/tests/shell/testcases/ebtables/0005-ifnamechecks_0
+++ b/iptables/tests/shell/testcases/ebtables/0005-ifnamechecks_0
@@ -3,7 +3,7 @@
set -e
# there is no legacy backend to test
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
EXPECT='*filter
:INPUT ACCEPT
diff --git a/iptables/tests/shell/testcases/firewalld-restore/0001-firewalld_0 b/iptables/tests/shell/testcases/firewalld-restore/0001-firewalld_0
index 8bf0c2c6c194e..0174b03f4ebc7 100755
--- a/iptables/tests/shell/testcases/firewalld-restore/0001-firewalld_0
+++ b/iptables/tests/shell/testcases/firewalld-restore/0001-firewalld_0
@@ -231,7 +231,7 @@ for table in nat mangle raw filter;do
done
case "$XT_MULTI" in
-*/xtables-nft-multi)
+*xtables-nft-multi)
# nft-multi displays chain names in different order, work around this for now
tmpfile2=$(mktemp)
sort "$tmpfile" > "$tmpfile2"
diff --git a/iptables/tests/shell/testcases/ipt-restore/0004-restore-race_0 b/iptables/tests/shell/testcases/ipt-restore/0004-restore-race_0
index 96a5e66d0ab81..9fc50615b8926 100755
--- a/iptables/tests/shell/testcases/ipt-restore/0004-restore-race_0
+++ b/iptables/tests/shell/testcases/ipt-restore/0004-restore-race_0
@@ -86,7 +86,7 @@ if [ $LINES1 -ne $LINES2 ]; then
fi
case "$XT_MULTI" in
-*/xtables-nft-multi)
+*xtables-nft-multi)
attempts=$((RANDOM%10))
attempts=$((attempts+1))
;;
diff --git a/iptables/tests/shell/testcases/nft-only/0001compat_0 b/iptables/tests/shell/testcases/nft-only/0001compat_0
index 4319ea5a6a797..a617c52f53695 100755
--- a/iptables/tests/shell/testcases/nft-only/0001compat_0
+++ b/iptables/tests/shell/testcases/nft-only/0001compat_0
@@ -5,17 +5,18 @@
# xtables: avoid bogus 'is incompatible' warning
case "$XT_MULTI" in
-*/xtables-nft-multi)
- nft -v >/dev/null || exit 0
- nft 'add table ip nft-test; add chain ip nft-test foobar { type filter hook forward priority 42; }' || exit 1
- nft 'add table ip6 nft-test; add chain ip6 nft-test foobar { type filter hook forward priority 42; }' || exit 1
-
- $XT_MULTI iptables -L -t filter || exit 1
- $XT_MULTI ip6tables -L -t filter || exit 1
+*xtables-nft-multi)
;;
*)
echo skip $XT_MULTI
+ exit 0
;;
esac
+nft -v >/dev/null || exit 0
+nft 'add table ip nft-test; add chain ip nft-test foobar { type filter hook forward priority 42; }' || exit 1
+nft 'add table ip6 nft-test; add chain ip6 nft-test foobar { type filter hook forward priority 42; }' || exit 1
+
+$XT_MULTI iptables -L -t filter || exit 1
+$XT_MULTI ip6tables -L -t filter || exit 1
exit 0
diff --git a/iptables/tests/shell/testcases/nft-only/0002invflags_0 b/iptables/tests/shell/testcases/nft-only/0002invflags_0
index 406b6081a98a4..fe33874dde7f2 100755
--- a/iptables/tests/shell/testcases/nft-only/0002invflags_0
+++ b/iptables/tests/shell/testcases/nft-only/0002invflags_0
@@ -2,7 +2,7 @@
set -e
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
$XT_MULTI iptables -A INPUT -p tcp --dport 53 ! -s 192.168.0.1 -j ACCEPT
$XT_MULTI ip6tables -A INPUT -p tcp --dport 53 ! -s feed:babe::1 -j ACCEPT
diff --git a/iptables/tests/shell/testcases/nft-only/0003delete-with-comment_0 b/iptables/tests/shell/testcases/nft-only/0003delete-with-comment_0
index 67af9fd897410..ccb009e469076 100755
--- a/iptables/tests/shell/testcases/nft-only/0003delete-with-comment_0
+++ b/iptables/tests/shell/testcases/nft-only/0003delete-with-comment_0
@@ -2,7 +2,7 @@
set -e
-[[ $XT_MULTI == */xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
+[[ $XT_MULTI == *xtables-nft-multi ]] || { echo "skip $XT_MULTI"; exit 0; }
comment1="foo bar"
comment2="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
--
2.24.1

78
SOURCES/0013-xtables-restore-fix-for-noflush-and-empty-lines.patch Normal file
View File

@ -0,0 +1,78 @@
From 5ea18ea8c0c99f2c71a5eaf32f4fbf6339ce8cc7 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 11 Feb 2020 16:52:59 +0100
Subject: [PATCH] xtables-restore: fix for --noflush and empty lines
Lookahead buffer used for cache requirements estimate in restore
--noflush separates individual lines with nul-chars. Two consecutive
nul-chars are interpreted as end of buffer and remaining buffer content
is skipped.
Sadly, reading an empty line (i.e., one containing a newline character
only) caused double nul-chars to appear in buffer as well, leading to
premature stop when reading cached lines from buffer.
To fix that, make use of xtables_restore_parse_line() skipping empty
lines without calling strtok() and just leave the newline character in
place. A more intuitive approach, namely skipping empty lines while
buffering, is deliberately not chosen as that would cause wrong values
in 'line' variable.
Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1400
Fixes: 09cb517949e69 ("xtables-restore: Improve performance of --noflush operation")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Arturo Borrero Gonzalez <arturo@netfilter.org>
(cherry picked from commit 8e76391096f12212985c401ee83a67990aa27a29)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
.../ipt-restore/0011-noflush-empty-line_0 | 16 ++++++++++++++++
iptables/xtables-restore.c | 8 +++++---
2 files changed, 21 insertions(+), 3 deletions(-)
create mode 100755 iptables/tests/shell/testcases/ipt-restore/0011-noflush-empty-line_0
diff --git a/iptables/tests/shell/testcases/ipt-restore/0011-noflush-empty-line_0 b/iptables/tests/shell/testcases/ipt-restore/0011-noflush-empty-line_0
new file mode 100755
index 0000000000000..bea1a690bb624
--- /dev/null
+++ b/iptables/tests/shell/testcases/ipt-restore/0011-noflush-empty-line_0
@@ -0,0 +1,16 @@
+#!/bin/bash -e
+
+# make sure empty lines won't break --noflush
+
+cat <<EOF | $XT_MULTI iptables-restore --noflush
+# just a comment followed by innocent empty line
+
+*filter
+-A FORWARD -j ACCEPT
+COMMIT
+EOF
+
+EXPECT='Chain FORWARD (policy ACCEPT)
+target prot opt source destination
+ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 '
+diff -u <(echo "$EXPECT") <($XT_MULTI iptables -n -L FORWARD)
diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c
index 63cc15cee9621..fb2ac8b5c12a3 100644
--- a/iptables/xtables-restore.c
+++ b/iptables/xtables-restore.c
@@ -293,11 +293,13 @@ void xtables_restore_parse(struct nft_handle *h,
while (fgets(buffer, sizeof(buffer), p->in)) {
size_t blen = strlen(buffer);
- /* drop trailing newline; xtables_restore_parse_line()
+ /* Drop trailing newline; xtables_restore_parse_line()
* uses strtok() which replaces them by nul-characters,
* causing unpredictable string delimiting in
- * preload_buffer */
- if (buffer[blen - 1] == '\n')
+ * preload_buffer.
+ * Unless this is an empty line which would fold into a
+ * spurious EoB indicator (double nul-char). */
+ if (buffer[blen - 1] == '\n' && blen > 1)
buffer[blen - 1] = '\0';
else
blen++;
--
2.24.1

43
SOURCES/0014-iptables-test.py-Fix-host-mode.patch Normal file
View File

@ -0,0 +1,43 @@
From 40e7bc3055f9bc34ccb6327f1f32c2fc524fb693 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 18 Feb 2020 16:43:16 +0100
Subject: [PATCH] iptables-test.py: Fix --host mode
In some cases, the script still called repo binaries. Avoid this when in
--host mode to allow testing without the need to compile sources in
beforehand.
Fixes: 1b5d762c1865e ("iptables-test: Support testing host binaries")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit ba2af278e8836977a8cfb35c54dac60ca9b40000)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables-test.py | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/iptables-test.py b/iptables-test.py
index fdb4e6a3644e4..e986d7a318218 100755
--- a/iptables-test.py
+++ b/iptables-test.py
@@ -119,8 +119,7 @@ def run_test(iptables, rule, rule_save, res, filename, lineno, netns):
elif splitted[0] == EBTABLES:
command = EBTABLES_SAVE
- path = os.path.abspath(os.path.curdir) + "/iptables/" + EXECUTEABLE
- command = path + " " + command
+ command = EXECUTEABLE + " " + command
if netns:
command = "ip netns exec ____iptables-container-test " + command
@@ -165,7 +164,7 @@ def execute_cmd(cmd, filename, lineno):
'''
global log_file
if cmd.startswith('iptables ') or cmd.startswith('ip6tables ') or cmd.startswith('ebtables ') or cmd.startswith('arptables '):
- cmd = os.path.abspath(os.path.curdir) + "/iptables/" + EXECUTEABLE + " " + cmd
+ cmd = EXECUTEABLE + " " + cmd
print("command: {}".format(cmd), file=log_file)
ret = subprocess.call(cmd, shell=True, universal_newlines=True,
--
2.25.1

274
SOURCES/0015-xtables-Review-nft_init.patch Normal file
View File

@ -0,0 +1,274 @@
From 51f895d54af6e163e0290520e124e9413438ccf4 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 21 Feb 2020 14:55:52 +0100
Subject: [PATCH] xtables: Review nft_init()
Move common code into nft_init(), such as:
* initial zeroing nft_handle fields
* family ops lookup and assignment to 'ops' field
* setting of 'family' field
This requires minor adjustments in xtables_restore_main() so extra field
initialization doesn't happen before nft_init() call.
As a side-effect, this fixes segfaulting xtables-monitor binary when
printing rules for trace event as in that code-path 'ops' field wasn't
initialized.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit d0446ab11182f6ca2adc486a124895f09a220c6e)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/nft.c | 9 ++++++++-
iptables/nft.h | 2 +-
iptables/xtables-arp.c | 9 +--------
iptables/xtables-eb.c | 9 +--------
iptables/xtables-monitor.c | 2 +-
iptables/xtables-restore.c | 14 +++++++-------
iptables/xtables-save.c | 9 ++-------
iptables/xtables-standalone.c | 6 ++----
iptables/xtables-translate.c | 2 +-
iptables/xtables.c | 4 ----
10 files changed, 24 insertions(+), 42 deletions(-)
diff --git a/iptables/nft.c b/iptables/nft.c
index 3f2a62ae12c07..0287add3fb21f 100644
--- a/iptables/nft.c
+++ b/iptables/nft.c
@@ -789,8 +789,10 @@ int nft_restart(struct nft_handle *h)
return 0;
}
-int nft_init(struct nft_handle *h, const struct builtin_table *t)
+int nft_init(struct nft_handle *h, int family, const struct builtin_table *t)
{
+ memset(h, 0, sizeof(*h));
+
h->nl = mnl_socket_open(NETLINK_NETFILTER);
if (h->nl == NULL)
return -1;
@@ -800,9 +802,14 @@ int nft_init(struct nft_handle *h, const struct builtin_table *t)
return -1;
}
+ h->ops = nft_family_ops_lookup(family);
+ if (!h->ops)
+ xtables_error(PARAMETER_PROBLEM, "Unknown family");
+
h->portid = mnl_socket_get_portid(h->nl);
h->tables = t;
h->cache = &h->__cache[0];
+ h->family = family;
INIT_LIST_HEAD(&h->obj_list);
INIT_LIST_HEAD(&h->err_list);
diff --git a/iptables/nft.h b/iptables/nft.h
index 51b5660314c0c..5cf260a6d2cd3 100644
--- a/iptables/nft.h
+++ b/iptables/nft.h
@@ -80,7 +80,7 @@ extern const struct builtin_table xtables_bridge[NFT_TABLE_MAX];
int mnl_talk(struct nft_handle *h, struct nlmsghdr *nlh,
int (*cb)(const struct nlmsghdr *nlh, void *data),
void *data);
-int nft_init(struct nft_handle *h, const struct builtin_table *t);
+int nft_init(struct nft_handle *h, int family, const struct builtin_table *t);
void nft_fini(struct nft_handle *h);
int nft_restart(struct nft_handle *h);
diff --git a/iptables/xtables-arp.c b/iptables/xtables-arp.c
index 9cfad76263d32..c8196f08baa59 100644
--- a/iptables/xtables-arp.c
+++ b/iptables/xtables-arp.c
@@ -500,17 +500,10 @@ int nft_init_arp(struct nft_handle *h, const char *pname)
init_extensionsa();
#endif
- memset(h, 0, sizeof(*h));
- h->family = NFPROTO_ARP;
-
- if (nft_init(h, xtables_arp) < 0)
+ if (nft_init(h, NFPROTO_ARP, xtables_arp) < 0)
xtables_error(OTHER_PROBLEM,
"Could not initialize nftables layer.");
- h->ops = nft_family_ops_lookup(h->family);
- if (h->ops == NULL)
- xtables_error(PARAMETER_PROBLEM, "Unknown family");
-
return 0;
}
diff --git a/iptables/xtables-eb.c b/iptables/xtables-eb.c
index 15b971da3d425..c006bc95ac681 100644
--- a/iptables/xtables-eb.c
+++ b/iptables/xtables-eb.c
@@ -739,16 +739,9 @@ int nft_init_eb(struct nft_handle *h, const char *pname)
init_extensionsb();
#endif
- memset(h, 0, sizeof(*h));
-
- h->family = NFPROTO_BRIDGE;
-
- if (nft_init(h, xtables_bridge) < 0)
+ if (nft_init(h, NFPROTO_BRIDGE, xtables_bridge) < 0)
xtables_error(OTHER_PROBLEM,
"Could not initialize nftables layer.");
- h->ops = nft_family_ops_lookup(h->family);
- if (!h->ops)
- xtables_error(PARAMETER_PROBLEM, "Unknown family");
/* manually registering ebt matches, given the original ebtables parser
* don't use '-m matchname' and the match can't be loaded dynamically when
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index a5245d1422af9..c2b31dbaa0795 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -615,7 +615,7 @@ int xtables_monitor_main(int argc, char *argv[])
init_extensions4();
#endif
- if (nft_init(&h, xtables_ipv4)) {
+ if (nft_init(&h, AF_INET, xtables_ipv4)) {
fprintf(stderr, "%s/%s Failed to initialize nft: %s\n",
xtables_globals.program_name,
xtables_globals.program_version,
diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c
index fb2ac8b5c12a3..11834c0ea98c5 100644
--- a/iptables/xtables-restore.c
+++ b/iptables/xtables-restore.c
@@ -360,15 +360,13 @@ static int
xtables_restore_main(int family, const char *progname, int argc, char *argv[])
{
const struct builtin_table *tables;
- struct nft_handle h = {
- .family = family,
- .restore = true,
- };
- int c;
struct nft_xt_restore_parse p = {
.commit = true,
.cb = &restore_cb,
};
+ bool noflush = false;
+ struct nft_handle h;
+ int c;
line = 0;
@@ -402,7 +400,7 @@ xtables_restore_main(int family, const char *progname, int argc, char *argv[])
print_usage(prog_name, PACKAGE_VERSION);
exit(0);
case 'n':
- h.noflush = 1;
+ noflush = true;
break;
case 'M':
xtables_modprobe_program = optarg;
@@ -464,13 +462,15 @@ xtables_restore_main(int family, const char *progname, int argc, char *argv[])
return 1;
}
- if (nft_init(&h, tables) < 0) {
+ if (nft_init(&h, family, tables) < 0) {
fprintf(stderr, "%s/%s Failed to initialize nft: %s\n",
xtables_globals.program_name,
xtables_globals.program_version,
strerror(errno));
exit(EXIT_FAILURE);
}
+ h.noflush = noflush;
+ h.restore = true;
xtables_restore_parse(&h, &p);
diff --git a/iptables/xtables-save.c b/iptables/xtables-save.c
index 3a52f8c3d8209..228282deaed07 100644
--- a/iptables/xtables-save.c
+++ b/iptables/xtables-save.c
@@ -139,10 +139,8 @@ xtables_save_main(int family, int argc, char *argv[],
struct do_output_data d = {
.format = FMT_NOCOUNTS,
};
+ struct nft_handle h;
bool dump = false;
- struct nft_handle h = {
- .family = family,
- };
FILE *file = NULL;
int ret, c;
@@ -242,16 +240,13 @@ xtables_save_main(int family, int argc, char *argv[],
return 1;
}
- if (nft_init(&h, tables) < 0) {
+ if (nft_init(&h, family, tables) < 0) {
fprintf(stderr, "%s/%s Failed to initialize nft: %s\n",
xtables_globals.program_name,
xtables_globals.program_version,
strerror(errno));
exit(EXIT_FAILURE);
}
- h.ops = nft_family_ops_lookup(h.family);
- if (!h.ops)
- xtables_error(PARAMETER_PROBLEM, "Unknown family");
ret = do_output(&h, tablename, &d);
nft_fini(&h);
diff --git a/iptables/xtables-standalone.c b/iptables/xtables-standalone.c
index 1a28c5480629f..022d5dd44abbf 100644
--- a/iptables/xtables-standalone.c
+++ b/iptables/xtables-standalone.c
@@ -44,9 +44,7 @@ xtables_main(int family, const char *progname, int argc, char *argv[])
{
int ret;
char *table = "filter";
- struct nft_handle h = {
- .family = family,
- };
+ struct nft_handle h;
xtables_globals.program_name = progname;
ret = xtables_init_all(&xtables_globals, family);
@@ -61,7 +59,7 @@ xtables_main(int family, const char *progname, int argc, char *argv[])
init_extensions4();
#endif
- if (nft_init(&h, xtables_ipv4) < 0) {
+ if (nft_init(&h, family, xtables_ipv4) < 0) {
fprintf(stderr, "%s/%s Failed to initialize nft: %s\n",
xtables_globals.program_name,
xtables_globals.program_version,
diff --git a/iptables/xtables-translate.c b/iptables/xtables-translate.c
index 0f95855b41aa4..76ad7eb69eca9 100644
--- a/iptables/xtables-translate.c
+++ b/iptables/xtables-translate.c
@@ -480,7 +480,7 @@ static int xtables_xlate_main_common(struct nft_handle *h,
return 1;
}
- if (nft_init(h, tables) < 0) {
+ if (nft_init(h, family, tables) < 0) {
fprintf(stderr, "%s/%s Failed to initialize nft: %s\n",
xtables_globals.program_name,
xtables_globals.program_version,
diff --git a/iptables/xtables.c b/iptables/xtables.c
index 8f9dc628d0029..4b24d15c46295 100644
--- a/iptables/xtables.c
+++ b/iptables/xtables.c
@@ -571,10 +571,6 @@ void do_parse(struct nft_handle *h, int argc, char *argv[],
demand-load a protocol. */
opterr = 0;
- h->ops = nft_family_ops_lookup(h->family);
- if (h->ops == NULL)
- xtables_error(PARAMETER_PROBLEM, "Unknown family");
-
opts = xt_params->orig_opts;
while ((cs->c = getopt_long(argc, argv,
"-:A:C:D:R:I:L::S::M:F::Z::N:X::E:P:Vh::o:p:s:d:j:i:fbvw::W::nt:m:xc:g:46",
--
2.26.2

49
SOURCES/0016-nft-cache-Fix-nft_release_cache-under-stress.patch Normal file
View File

@ -0,0 +1,49 @@
From 66b9f92ef41de90fc2b0359247c36bc6d128233d Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 28 Feb 2020 20:32:13 +0100
Subject: [PATCH] nft: cache: Fix nft_release_cache() under stress
iptables-nft-restore calls nft_action(h, NFT_COMPAT_COMMIT) for each
COMMIT line in input. When restoring a dump containing multiple large
tables, chances are nft_rebuild_cache() has to run multiple times.
If the above happens, consecutive table contents are added to __cache[1]
which nft_rebuild_cache() then frees, so next commit attempt accesses
invalid memory.
Fix this by making nft_release_cache() (called after each successful
commit) return things into pre-rebuild state again, but keeping the
fresh cache copy.
Fixes: f6ad231d698c7 ("nft: keep original cache in case of ERESTART")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit c550c81fd373e5753103d20f7902171f0fa79807)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/nft-cache.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/iptables/nft-cache.c b/iptables/nft-cache.c
index 7345a27e2894b..6f21f2283e0fb 100644
--- a/iptables/nft-cache.c
+++ b/iptables/nft-cache.c
@@ -647,8 +647,14 @@ void nft_rebuild_cache(struct nft_handle *h)
void nft_release_cache(struct nft_handle *h)
{
- if (h->cache_index)
- flush_cache(h, &h->__cache[0], NULL);
+ if (!h->cache_index)
+ return;
+
+ flush_cache(h, &h->__cache[0], NULL);
+ memcpy(&h->__cache[0], &h->__cache[1], sizeof(h->__cache[0]));
+ memset(&h->__cache[1], 0, sizeof(h->__cache[1]));
+ h->cache_index = 0;
+ h->cache = &h->__cache[0];
}
struct nftnl_table_list *nftnl_table_list_get(struct nft_handle *h)
--
2.25.1

84
SOURCES/0017-nft-cache-Fix-iptables-save-segfault-under-stress.patch Normal file
View File

@ -0,0 +1,84 @@
From 38c94a9f5ea03deffe0a34056a0f83a4af4641bb Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 13 Mar 2020 13:02:12 +0100
Subject: [PATCH] nft: cache: Fix iptables-save segfault under stress
If kernel ruleset is constantly changing, code called by
nft_is_table_compatible() may crash: For each item in table's chain
list, nft_is_chain_compatible() is called. This in turn calls
nft_build_cache() to fetch chain's rules. Though if kernel genid has changed
meanwhile, cache is flushed and rebuilt from scratch, thereby freeing
table's chain list - the foreach loop in nft_is_table_compatible() then
operates on freed memory.
A simple reproducer (may need a few calls):
| RULESET='*filter
| :INPUT ACCEPT [10517:1483527]
| :FORWARD ACCEPT [0:0]
| :OUTPUT ACCEPT [1714:105671]
| COMMIT
| '
|
| for ((i = 0; i < 100; i++)); do
| iptables-nft-restore <<< "$RULESET" &
| done &
| iptables-nft-save
To fix the problem, basically revert commit ab1cd3b510fa5 ("nft: ensure
cache consistency") so that __nft_build_cache() no longer flushes the
cache. Instead just record kernel's genid when fetching for the first
time. If kernel rule set changes until the changes are committed, the
commit simply fails and local cache is being rebuilt.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 200bc399651499f502ac0de45f4d4aa4c9d37ab6)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/nft-cache.c | 16 ++--------------
1 file changed, 2 insertions(+), 14 deletions(-)
diff --git a/iptables/nft-cache.c b/iptables/nft-cache.c
index 6f21f2283e0fb..07265b7795e4f 100644
--- a/iptables/nft-cache.c
+++ b/iptables/nft-cache.c
@@ -452,15 +452,11 @@ __nft_build_cache(struct nft_handle *h, enum nft_cache_level level,
const struct builtin_table *t, const char *set,
const char *chain)
{
- uint32_t genid_start, genid_stop;
-
if (level <= h->cache_level)
return;
-retry:
- mnl_genid_get(h, &genid_start);
- if (h->cache_level && genid_start != h->nft_genid)
- flush_chain_cache(h, NULL);
+ if (!h->nft_genid)
+ mnl_genid_get(h, &h->nft_genid);
switch (h->cache_level) {
case NFT_CL_NONE:
@@ -487,18 +483,10 @@ retry:
break;
}
- mnl_genid_get(h, &genid_stop);
- if (genid_start != genid_stop) {
- flush_chain_cache(h, NULL);
- goto retry;
- }
-
if (!t && !chain)
h->cache_level = level;
else if (h->cache_level < NFT_CL_TABLES)
h->cache_level = NFT_CL_TABLES;
-
- h->nft_genid = genid_start;
}
void nft_build_cache(struct nft_handle *h, struct nftnl_chain *c)
--
2.25.1

127
SOURCES/0018-ebtables-among-Support-mixed-MAC-and-MAC-IP-entries.patch Normal file
View File

@ -0,0 +1,127 @@
From 654b2e2512630df07e3ea57f8d54e851e75b33f1 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Thu, 13 Feb 2020 17:49:53 +0100
Subject: [PATCH] ebtables: among: Support mixed MAC and MAC/IP entries
Powered by Stefano's support for concatenated ranges, a full among match
replacement can be implemented. The trick is to add MAC-only elements as
a concatenation of MAC and zero-length prefix, i.e. a range from
0.0.0.0 till 255.255.255.255.
Although not quite needed, detection of pure MAC-only matches is left in
place. For those, no implicit 'meta protocol' match is added (which is
required otherwise at least to keep nft output correct) and no concat
type is used for the set.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit c33bae9c6c7a49c8af16df846e6112fc4727e643)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
extensions/libebt_among.c | 6 +-----
extensions/libebt_among.t | 2 +-
iptables/ebtables-nft.8 | 4 ----
iptables/nft.c | 20 +++++++++++++++++++-
4 files changed, 21 insertions(+), 11 deletions(-)
diff --git a/extensions/libebt_among.c b/extensions/libebt_among.c
index 715d559f432c2..2b9a1b6566684 100644
--- a/extensions/libebt_among.c
+++ b/extensions/libebt_among.c
@@ -63,10 +63,6 @@ parse_nft_among_pair(char *buf, struct nft_among_pair *pair, bool have_ip)
char *sep = index(buf, '=');
struct ether_addr *ether;
- if (have_ip ^ !!sep)
- xtables_error(PARAMETER_PROBLEM,
- "among: Mixed MAC and MAC=IP not allowed.");
-
if (sep) {
*sep = '\0';
@@ -205,7 +201,7 @@ static void __bramong_print(struct nft_among_pair *pairs,
isep = ",";
printf("%s", ether_ntoa(&pairs[i].ether));
- if (have_ip)
+ if (pairs[i].in.s_addr != INADDR_ANY)
printf("=%s", inet_ntoa(pairs[i].in));
}
printf(" ");
diff --git a/extensions/libebt_among.t b/extensions/libebt_among.t
index 56b299161ff31..a02206f391cde 100644
--- a/extensions/libebt_among.t
+++ b/extensions/libebt_among.t
@@ -13,4 +13,4 @@
--among-src;=;FAIL
--among-src 00:11=10.0.0.1;=;FAIL
--among-src de:ad:0:be:ee:ff=10.256.0.1;=;FAIL
---among-src de:ad:0:be:ee:ff,c0:ff:ee:0:ba:be=192.168.1.1;=;FAIL
+--among-src c0:ff:ee:0:ba:be=192.168.1.1,de:ad:0:be:ee:ff;=;OK
diff --git a/iptables/ebtables-nft.8 b/iptables/ebtables-nft.8
index a91f0c1aacb0f..1fa5ad9388cc0 100644
--- a/iptables/ebtables-nft.8
+++ b/iptables/ebtables-nft.8
@@ -551,10 +551,6 @@ Same as
.BR "--among-src-file " "[!] \fIfile\fP"
Same as
.BR --among-src " but the list is read in from the specified file."
-.PP
-Note that in this implementation of ebtables, among lists uses must be
-internally homogeneous regarding whether IP addresses are present or not. Mixed
-use of MAC addresses and MAC/IP address pairs is not supported yet.
.SS arp
Specify (R)ARP fields. The protocol must be specified as
.IR ARP " or " RARP .
diff --git a/iptables/nft.c b/iptables/nft.c
index 0287add3fb21f..4930b6de534d8 100644
--- a/iptables/nft.c
+++ b/iptables/nft.c
@@ -1029,19 +1029,28 @@ static int __add_nft_among(struct nft_handle *h, const char *table,
};
struct nftnl_expr *e;
struct nftnl_set *s;
+ uint32_t flags = 0;
int idx = 0;
if (ip) {
type = type << CONCAT_TYPE_BITS | NFT_DATATYPE_IPADDR;
len += sizeof(struct in_addr) + NETLINK_ALIGN - 1;
len &= ~(NETLINK_ALIGN - 1);
+ flags = NFT_SET_INTERVAL;
}
- s = add_anon_set(h, table, 0, type, len, cnt);
+ s = add_anon_set(h, table, flags, type, len, cnt);
if (!s)
return -ENOMEM;
set_id = nftnl_set_get_u32(s, NFTNL_SET_ID);
+ if (ip) {
+ uint8_t field_len[2] = { ETH_ALEN, sizeof(struct in_addr) };
+
+ nftnl_set_set_data(s, NFTNL_SET_DESC_CONCAT,
+ field_len, sizeof(field_len));
+ }
+
for (idx = 0; idx < cnt; idx++) {
struct nftnl_set_elem *elem = nftnl_set_elem_alloc();
@@ -1049,6 +1058,15 @@ static int __add_nft_among(struct nft_handle *h, const char *table,
return -ENOMEM;
nftnl_set_elem_set(elem, NFTNL_SET_ELEM_KEY,
&pairs[idx], len);
+ if (ip) {
+ struct in_addr tmp = pairs[idx].in;
+
+ if (tmp.s_addr == INADDR_ANY)
+ pairs[idx].in.s_addr = INADDR_BROADCAST;
+ nftnl_set_elem_set(elem, NFTNL_SET_ELEM_KEY_END,
+ &pairs[idx], len);
+ pairs[idx].in = tmp;
+ }
nftnl_set_elem_add(s, elem);
}
--
2.26.2

157
SOURCES/0019-xtables-Align-effect-of-4-6-options-with-legacy.patch Normal file
View File

@ -0,0 +1,157 @@
From aa221d3a7ffc8e3245d9031173b306431ddfaf9f Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 21 Feb 2020 13:18:32 +0100
Subject: [PATCH] xtables: Align effect of -4/-6 options with legacy
Legacy iptables doesn't accept -4 or -6 if they don't match the
symlink's native family. The only exception to that is iptables-restore
which simply ignores the lines introduced by non-matching options, which
is useful to create combined dump files for feeding into both
iptables-restore and ip6tables-restore.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 1639b8ba5105542c73e0e1c35e70f245dab89d81)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
.../shell/testcases/iptables/0006-46-args_0 | 88 +++++++++++++++++++
iptables/xtables.c | 21 ++---
2 files changed, 96 insertions(+), 13 deletions(-)
create mode 100755 iptables/tests/shell/testcases/iptables/0006-46-args_0
diff --git a/iptables/tests/shell/testcases/iptables/0006-46-args_0 b/iptables/tests/shell/testcases/iptables/0006-46-args_0
new file mode 100755
index 0000000000000..17a0a01829df5
--- /dev/null
+++ b/iptables/tests/shell/testcases/iptables/0006-46-args_0
@@ -0,0 +1,88 @@
+#!/bin/bash
+
+RC=0
+
+$XT_MULTI iptables -6 -A FORWARD -j ACCEPT
+rc=$?
+if [[ $rc -ne 2 ]]; then
+ echo "'iptables -6' returned $rc instead of 2"
+ RC=1
+fi
+
+$XT_MULTI ip6tables -4 -A FORWARD -j ACCEPT
+rc=$?
+if [[ $rc -ne 2 ]]; then
+ echo "'ip6tables -4' returned $rc instead of 2"
+ RC=1
+fi
+
+RULESET='*filter
+-4 -A FORWARD -d 10.0.0.1 -j ACCEPT
+-6 -A FORWARD -d fec0:10::1 -j ACCEPT
+COMMIT
+'
+EXPECT4='-P FORWARD ACCEPT
+-A FORWARD -d 10.0.0.1/32 -j ACCEPT'
+EXPECT6='-P FORWARD ACCEPT
+-A FORWARD -d fec0:10::1/128 -j ACCEPT'
+EXPECT_EMPTY='-P FORWARD ACCEPT'
+
+echo "$RULESET" | $XT_MULTI iptables-restore || {
+ echo "iptables-restore failed!"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT4") <($XT_MULTI iptables -S FORWARD) || {
+ echo "unexpected iptables ruleset"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT_EMPTY") <($XT_MULTI ip6tables -S FORWARD) || {
+ echo "unexpected non-empty ip6tables ruleset"
+ RC=1
+}
+
+$XT_MULTI iptables -F FORWARD
+
+echo "$RULESET" | $XT_MULTI ip6tables-restore || {
+ echo "ip6tables-restore failed!"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT6") <($XT_MULTI ip6tables -S FORWARD) || {
+ echo "unexpected ip6tables ruleset"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT_EMPTY") <($XT_MULTI iptables -S FORWARD) || {
+ echo "unexpected non-empty iptables ruleset"
+ RC=1
+}
+
+$XT_MULTI ip6tables -F FORWARD
+
+$XT_MULTI iptables -4 -A FORWARD -d 10.0.0.1 -j ACCEPT || {
+ echo "iptables failed!"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT4") <($XT_MULTI iptables -S FORWARD) || {
+ echo "unexpected iptables ruleset"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT_EMPTY") <($XT_MULTI ip6tables -S FORWARD) || {
+ echo "unexpected non-empty ip6tables ruleset"
+ RC=1
+}
+
+$XT_MULTI iptables -F FORWARD
+
+$XT_MULTI ip6tables -6 -A FORWARD -d fec0:10::1 -j ACCEPT || {
+ echo "ip6tables failed!"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT6") <($XT_MULTI ip6tables -S FORWARD) || {
+ echo "unexpected ip6tables ruleset"
+ RC=1
+}
+diff -u -Z <(echo -e "$EXPECT_EMPTY") <($XT_MULTI iptables -S FORWARD) || {
+ echo "unexpected non-empty iptables ruleset"
+ RC=1
+}
+
+exit $RC
diff --git a/iptables/xtables.c b/iptables/xtables.c
index 4b24d15c46295..8c2d21d42b7d2 100644
--- a/iptables/xtables.c
+++ b/iptables/xtables.c
@@ -913,27 +913,22 @@ void do_parse(struct nft_handle *h, int argc, char *argv[],
break;
case '4':
+ if (args->family == AF_INET)
+ break;
+
if (p->restore && args->family == AF_INET6)
return;
- if (args->family != AF_INET)
- exit_tryhelp(2);
-
- h->ops = nft_family_ops_lookup(args->family);
- break;
+ exit_tryhelp(2);
case '6':
+ if (args->family == AF_INET6)
+ break;
+
if (p->restore && args->family == AF_INET)
return;
- args->family = AF_INET6;
- xtables_set_nfproto(AF_INET6);
-
- h->ops = nft_family_ops_lookup(args->family);
- if (h->ops == NULL)
- xtables_error(PARAMETER_PROBLEM,
- "Unknown family");
- break;
+ exit_tryhelp(2);
case 1: /* non option */
if (optarg[0] == '!' && optarg[1] == '\0') {
--
2.26.2

81
SOURCES/0020-xtables-Drop-4-and-6-support-from-xtables-save-resto.patch Normal file
View File

@ -0,0 +1,81 @@
From ea9d40744307d7c49808d8fabfc904d525081055 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 21 Feb 2020 13:29:05 +0100
Subject: [PATCH] xtables: Drop -4 and -6 support from xtables-{save,restore}
Legacy tools don't support those options, either.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 0f40a8bc49d3f7b815336199931a82f919f37c4e)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-restore.c | 9 +--------
iptables/xtables-save.c | 11 +----------
2 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/iptables/xtables-restore.c b/iptables/xtables-restore.c
index 11834c0ea98c5..c472ac9bf651b 100644
--- a/iptables/xtables-restore.c
+++ b/iptables/xtables-restore.c
@@ -379,7 +379,7 @@ xtables_restore_main(int family, const char *progname, int argc, char *argv[])
exit(1);
}
- while ((c = getopt_long(argc, argv, "bcvVthnM:T:46wW", options, NULL)) != -1) {
+ while ((c = getopt_long(argc, argv, "bcvVthnM:T:wW", options, NULL)) != -1) {
switch (c) {
case 'b':
fprintf(stderr, "-b/--binary option is not implemented\n");
@@ -408,13 +408,6 @@ xtables_restore_main(int family, const char *progname, int argc, char *argv[])
case 'T':
p.tablename = optarg;
break;
- case '4':
- h.family = AF_INET;
- break;
- case '6':
- h.family = AF_INET6;
- xtables_set_nfproto(AF_INET6);
- break;
case 'w': /* fallthrough. Ignored by xt-restore */
case 'W':
if (!optarg && xs_has_arg(argc, argv))
diff --git a/iptables/xtables-save.c b/iptables/xtables-save.c
index 228282deaed07..28f7490275ce5 100644
--- a/iptables/xtables-save.c
+++ b/iptables/xtables-save.c
@@ -32,7 +32,7 @@
#define prog_name xtables_globals.program_name
#define prog_vers xtables_globals.program_version
-static const char *ipt_save_optstring = "bcdt:M:f:46V";
+static const char *ipt_save_optstring = "bcdt:M:f:V";
static const struct option ipt_save_options[] = {
{.name = "counters", .has_arg = false, .val = 'c'},
{.name = "version", .has_arg = false, .val = 'V'},
@@ -40,8 +40,6 @@ static const struct option ipt_save_options[] = {
{.name = "table", .has_arg = true, .val = 't'},
{.name = "modprobe", .has_arg = true, .val = 'M'},
{.name = "file", .has_arg = true, .val = 'f'},
- {.name = "ipv4", .has_arg = false, .val = '4'},
- {.name = "ipv6", .has_arg = false, .val = '6'},
{NULL},
};
@@ -187,13 +185,6 @@ xtables_save_main(int family, int argc, char *argv[],
case 'd':
dump = true;
break;
- case '4':
- h.family = AF_INET;
- break;
- case '6':
- h.family = AF_INET6;
- xtables_set_nfproto(AF_INET6);
- break;
case 'V':
printf("%s v%s (nf_tables)\n", prog_name, prog_vers);
exit(0);
--
2.26.2

42
SOURCES/0021-nfnl_osf-Fix-broken-conversion-to-nfnl_query.patch Normal file
View File

@ -0,0 +1,42 @@
From b29b3a215b9cbec20ea633e6a861accfc48b59bb Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Sat, 9 May 2020 13:36:49 +0200
Subject: [PATCH] nfnl_osf: Fix broken conversion to nfnl_query()
Due to missing NLM_F_ACK flag in request, nfnetlink code in kernel
didn't create an own ACK message but left it upon subsystem to ACK or
not. Since nfnetlink_osf doesn't ACK by itself, nfnl_query() got stuck
waiting for a reply.
Whoever did the conversion from deprecated nfnl_talk() obviously didn't
even test basic functionality of the tool.
Fixes: 52aa15098ebd6 ("nfnl_osf: Replace deprecated nfnl_talk() by nfnl_query()")
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit c8332553caf48132403895bae750b3cd09a2efd8)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
utils/nfnl_osf.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/utils/nfnl_osf.c b/utils/nfnl_osf.c
index 15d531975e11d..922d90ac135b7 100644
--- a/utils/nfnl_osf.c
+++ b/utils/nfnl_osf.c
@@ -378,9 +378,11 @@ static int osf_load_line(char *buffer, int len, int del)
memset(buf, 0, sizeof(buf));
if (del)
- nfnl_fill_hdr(nfnlssh, nmh, 0, AF_UNSPEC, 0, OSF_MSG_REMOVE, NLM_F_REQUEST);
+ nfnl_fill_hdr(nfnlssh, nmh, 0, AF_UNSPEC, 0, OSF_MSG_REMOVE,
+ NLM_F_ACK | NLM_F_REQUEST);
else
- nfnl_fill_hdr(nfnlssh, nmh, 0, AF_UNSPEC, 0, OSF_MSG_ADD, NLM_F_REQUEST | NLM_F_CREATE);
+ nfnl_fill_hdr(nfnlssh, nmh, 0, AF_UNSPEC, 0, OSF_MSG_ADD,
+ NLM_F_ACK | NLM_F_REQUEST | NLM_F_CREATE);
nfnl_addattr_l(nmh, sizeof(buf), OSF_ATTR_FINGER, &f, sizeof(struct xt_osf_user_finger));
--
2.26.2

80
SOURCES/0022-nfnl_osf-Improve-error-handling.patch Normal file
View File

@ -0,0 +1,80 @@
From acc1fb93b3674f81c9d1daa0e4e855410d2568b0 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Sat, 9 May 2020 13:42:56 +0200
Subject: [PATCH] nfnl_osf: Improve error handling
For some error cases, no log message was created - hence apart from the
return code there was no indication of failing execution.
If a line load fails, don't abort but continue with the remaining
file contents. The current pf.os file in this repository serves as
proof-of-concept:
Lines 700 and 701: Duplicates of lines 698 and 699 because 'W*' and 'W0'
parse into the same data.
Line 704: Duplicate of line 702 because apart from 'W*' and 'W0', only
the first three fields on right-hand side are sent to the kernel.
When loading, these dups are ignored (they would bounce if NLM_F_EXCL
was given). Upon deletion, they cause ENOENT response from kernel. In
order to align duplicate-tolerance in both modes, just ignore that
ENOENT.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 3e09bd1888575cfec136574d2b0e810ba33f1cfb)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
utils/nfnl_osf.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/utils/nfnl_osf.c b/utils/nfnl_osf.c
index 922d90ac135b7..8008e83d8af4b 100644
--- a/utils/nfnl_osf.c
+++ b/utils/nfnl_osf.c
@@ -392,7 +392,7 @@ static int osf_load_line(char *buffer, int len, int del)
static int osf_load_entries(char *path, int del)
{
FILE *inf;
- int err = 0;
+ int err = 0, lineno = 0;
char buf[1024];
inf = fopen(path, "r");
@@ -402,7 +402,9 @@ static int osf_load_entries(char *path, int del)
}
while(fgets(buf, sizeof(buf), inf)) {
- int len;
+ int len, rc;
+
+ lineno++;
if (buf[0] == '#' || buf[0] == '\n' || buf[0] == '\r')
continue;
@@ -414,9 +416,11 @@ static int osf_load_entries(char *path, int del)
buf[len] = '\0';
- err = osf_load_line(buf, len, del);
- if (err)
- break;
+ rc = osf_load_line(buf, len, del);
+ if (rc && (!del || errno != ENOENT)) {
+ ulog_err("Failed to load line %d", lineno);
+ err = rc;
+ }
memset(buf, 0, sizeof(buf));
}
@@ -448,6 +452,7 @@ int main(int argc, char *argv[])
if (!fingerprints) {
err = -ENOENT;
+ ulog("Missing fingerprints file argument.\n");
goto err_out_exit;
}
--
2.26.2

37
SOURCES/0023-nft-cache-Reset-genid-when-rebuilding-cache.patch Normal file
View File

@ -0,0 +1,37 @@
From 3b98024d952d265d50078c5b7ad04c9c65373733 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Fri, 29 May 2020 19:33:22 +0200
Subject: [PATCH] nft: cache: Reset genid when rebuilding cache
This is required in order to avoid a cache rebuild loop if
iptables-nft-restore is called with '--test' parameter and a dump
containing more than a single table.
If non-zero, __nft_build_cache() never updates genid and therefore the
incorrect genid (caused by increment in nft_action()) is never
corrected.
This is a RHEL-only fix, upstream rewrote the whole cache logic which
implicitly resolved this problem.
Fixes: 200bc39965149 ("nft: cache: Fix iptables-save segfault under stress")
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/nft-cache.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/iptables/nft-cache.c b/iptables/nft-cache.c
index 07265b7795e4f..bc6e7f7eaebfb 100644
--- a/iptables/nft-cache.c
+++ b/iptables/nft-cache.c
@@ -629,6 +629,7 @@ void nft_rebuild_cache(struct nft_handle *h)
if (h->cache_level)
__nft_flush_cache(h);
+ h->nft_genid = 0;
h->cache_level = NFT_CL_NONE;
__nft_build_cache(h, level, NULL, NULL, NULL);
}
--
2.26.2

81
SOURCES/0024-nft-Fix-for-F-in-iptables-dumps.patch Normal file
View File

@ -0,0 +1,81 @@
From 8ae56bbaa4119bdcf1d6abc8b78f21490657983c Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Fri, 24 Apr 2020 11:32:08 +0200
Subject: [PATCH] nft: Fix for '-F' in iptables dumps
When restoring a dump which contains an explicit flush command,
previously added rules are removed from cache and the following commit
will try to create netlink messages based on freed memory.
Fix this by weeding any rule-based commands from obj_list if they
address the same chain.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit 5bd3ab5c778033877d44a0c619ef6f98f34516af)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/nft.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/iptables/nft.c b/iptables/nft.c
index 4930b6de534d8..e95e99f1d8d71 100644
--- a/iptables/nft.c
+++ b/iptables/nft.c
@@ -411,6 +411,38 @@ batch_rule_add(struct nft_handle *h, enum obj_update_type type,
return batch_add(h, type, r);
}
+static void batch_obj_del(struct nft_handle *h, struct obj_update *o);
+
+static void batch_chain_flush(struct nft_handle *h,
+ const char *table, const char *chain)
+{
+ struct obj_update *obj, *tmp;
+
+ list_for_each_entry_safe(obj, tmp, &h->obj_list, head) {
+ struct nftnl_rule *r = obj->ptr;
+
+ switch (obj->type) {
+ case NFT_COMPAT_RULE_APPEND:
+ case NFT_COMPAT_RULE_INSERT:
+ case NFT_COMPAT_RULE_REPLACE:
+ case NFT_COMPAT_RULE_DELETE:
+ break;
+ default:
+ continue;
+ }
+
+ if (table &&
+ strcmp(table, nftnl_rule_get_str(r, NFTNL_RULE_TABLE)))
+ continue;
+
+ if (chain &&
+ strcmp(chain, nftnl_rule_get_str(r, NFTNL_RULE_CHAIN)))
+ continue;
+
+ batch_obj_del(h, obj);
+ }
+}
+
const struct builtin_table xtables_ipv4[NFT_TABLE_MAX] = {
[NFT_TABLE_RAW] = {
.name = "raw",
@@ -1671,6 +1703,7 @@ int nft_rule_flush(struct nft_handle *h, const char *chain, const char *table,
}
if (chain || !verbose) {
+ batch_chain_flush(h, table, chain);
__nft_rule_flush(h, table, chain, verbose, false);
flush_rule_cache(h, table, c);
return 1;
@@ -1686,6 +1719,7 @@ int nft_rule_flush(struct nft_handle *h, const char *chain, const char *table,
while (c != NULL) {
chain = nftnl_chain_get_str(c, NFTNL_CHAIN_NAME);
+ batch_chain_flush(h, table, chain);
__nft_rule_flush(h, table, chain, verbose, false);
flush_rule_cache(h, table, c);
c = nftnl_chain_list_iter_next(iter);
--
2.27.0

37
SOURCES/0025-tests-shell-Test-F-in-dump-files.patch Normal file
View File

@ -0,0 +1,37 @@
From dd98af599516806e2eb3e1186d0ad52ce7c6b4b5 Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Tue, 21 Apr 2020 14:10:53 +0200
Subject: [PATCH] tests: shell: Test -F in dump files
While not really useful, iptables-nft-restore shouldn't segfault either.
This tests the problem described in nfbz#1407.
Signed-off-by: Phil Sutter <phil@nwl.cc>
(cherry picked from commit f2ace0cdf25a5911ac84015829d65d6050a5e82d)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
.../tests/shell/testcases/ipt-restore/0012-dash-F_0 | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100755 iptables/tests/shell/testcases/ipt-restore/0012-dash-F_0
diff --git a/iptables/tests/shell/testcases/ipt-restore/0012-dash-F_0 b/iptables/tests/shell/testcases/ipt-restore/0012-dash-F_0
new file mode 100755
index 0000000000000..fd82afa1bc8ce
--- /dev/null
+++ b/iptables/tests/shell/testcases/ipt-restore/0012-dash-F_0
@@ -0,0 +1,12 @@
+#!/bin/bash -e
+
+# make sure -F lines don't cause segfaults
+
+RULESET='*nat
+-F PREROUTING
+-A PREROUTING -j ACCEPT
+-F PREROUTING
+COMMIT'
+
+echo -e "$RULESET" | $XT_MULTI iptables-restore
+echo -e "$RULESET" | $XT_MULTI iptables-restore -n
--
2.27.0

89
SOURCES/arptables-helper Normal file
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@ -0,0 +1,89 @@
#!/bin/bash
# config: /etc/sysconfig/arptables
# Source 'em up
. /etc/init.d/functions
ARPTABLES_CONFIG=/etc/sysconfig/arptables
flush_delete_chains() {
echo -n $"Flushing all chains: "
if arptables -F; then
success
else
failure
fi
echo
echo -n $"Removing user defined chains: "
if arptables -X; then
success
else
failure
fi
echo
}
start() {
if [ ! -x /usr/sbin/arptables ]; then
exit 4
fi
# don't do squat if we don't have the config file
if [ -f $ARPTABLES_CONFIG ]; then
# If we don't clear these first, we might be adding to
# pre-existing rules.
flush_delete_chains
arptables -Z
echo -n $"Applying arptables firewall rules: "
/usr/sbin/arptables-restore < $ARPTABLES_CONFIG && \
success || \
failure
echo
touch /var/lock/subsys/arptables
else
failure
echo
echo $"Configuration file /etc/sysconfig/arptables missing"
exit 6
fi
}
stop() {
flush_delete_chains
echo -n $"Resetting built-in chains to the default ACCEPT policy:"
arptables -P INPUT ACCEPT && \
arptables -P OUTPUT ACCEPT && \
success || \
failure
echo
rm -f /var/lock/subsys/arptables
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload)
# "restart" is really just "start" as this isn't a daemon,
# and "start" clears any pre-defined rules anyway.
# This is really only here to make those who expect it happy
start
;;
condrestart|try-restart|force-reload)
[ -e /var/lock/subsys/arptables ] && start
;;
*)
exit 2
esac
exit 0

12
SOURCES/arptables.service Normal file
View File

@ -0,0 +1,12 @@
[Unit]
Description=Automates a packet filtering firewall with arptables
After=network.target
[Service]
Type=oneshot
ExecStart=/usr/libexec/arptables-helper start
ExecStop=/usr/libexec/arptables-helper stop
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target

11
SOURCES/ebtables-config Normal file
View File

@ -0,0 +1,11 @@
# Save current firewall rules on stop.
# Value: yes|no, default: no
# Saves all firewall rules if firewall gets stopped
# (e.g. on system shutdown).
EBTABLES_SAVE_ON_STOP="no"
# Save (and restore) rule counters.
# Value: yes|no, default: no
# Save rule counters when saving a kernel table to a file. If the
# rule counters were saved, they will be restored when restoring the table.
EBTABLES_SAVE_COUNTER="no"

11
SOURCES/ebtables.service Normal file
View File

@ -0,0 +1,11 @@
[Unit]
Description=Ethernet Bridge Filtering tables
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/libexec/ebtables start
ExecStop=/usr/libexec/ebtables stop
[Install]
WantedBy=multi-user.target

71
SOURCES/ebtables.systemd Normal file
View File

@ -0,0 +1,71 @@
#!/bin/bash
RETVAL=0
EBTCONF=/etc/sysconfig/ebtables
initialize() {
# Initialize $TYPE tables
echo -n $" $TYPE tables: "
if [ -r /etc/sysconfig/ebtables.$TYPE ]; then
/sbin/ebtables -t $TYPE --atomic-file /etc/sysconfig/ebtables.$TYPE --atomic-commit > /dev/null || RETVAL=1
else
echo -n "not configured"
fi
if [ $RETVAL -eq 0 ]; then
echo -n $"[ OK ]"
echo -ne "\r"
else
echo -n $"[FAILED]"
echo -ne "\r"
fi
}
case $1 in
start)
if [[ -r $EBTCONF ]]; then
ebtables-restore <$EBTCONF
RETVAL=$?
else
echo -n "not configured"
fi
if [ $RETVAL -eq 0 ]; then
echo -n $"[ OK ]"
echo -ne "\r"
else
echo -n $"[FAILED]"
echo -ne "\r"
fi
;;
stop)
[[ $EBTABLES_SAVE_ON_STOP == "yes" ]] && $0 save
/sbin/ebtables --init-table
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
echo -n $"[ OK ]"
echo -ne "\r"
else
echo -n $"[FAILED]"
echo -ne "\r"
fi
;;
save)
echo -n $"Saving Ethernet bridge filtering (ebtables): "
ebtables-save >$EBTCONF
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
echo -n $"[ OK ]"
echo -ne "\r"
else
echo -n $"[FAILED]"
echo -ne "\r"
fi
;;
*)
echo "usage: ${0##*/} {start|stop|save}" >&2
exit 1
;;
esac
# vim:set ts=2 sw=2 ft=sh et:

59
SOURCES/iptables-config Normal file
View File

@ -0,0 +1,59 @@
# Load additional iptables modules (nat helpers)
# Default: -none-
# Space separated list of nat helpers (e.g. 'ip_nat_ftp ip_nat_irc'), which
# are loaded after the firewall rules are applied. Options for the helpers are
# stored in /etc/modprobe.conf.
IPTABLES_MODULES=""
# Save current firewall rules on stop.
# Value: yes|no, default: no
# Saves all firewall rules to /etc/sysconfig/iptables if firewall gets stopped
# (e.g. on system shutdown).
IPTABLES_SAVE_ON_STOP="no"
# Save current firewall rules on restart.
# Value: yes|no, default: no
# Saves all firewall rules to /etc/sysconfig/iptables if firewall gets
# restarted.
IPTABLES_SAVE_ON_RESTART="no"
# Save (and restore) rule and chain counter.
# Value: yes|no, default: no
# Save counters for rules and chains to /etc/sysconfig/iptables if
# 'service iptables save' is called or on stop or restart if SAVE_ON_STOP or
# SAVE_ON_RESTART is enabled.
IPTABLES_SAVE_COUNTER="no"
# Numeric status output
# Value: yes|no, default: yes
# Print IP addresses and port numbers in numeric format in the status output.
IPTABLES_STATUS_NUMERIC="yes"
# Verbose status output
# Value: yes|no, default: yes
# Print info about the number of packets and bytes plus the "input-" and
# "outputdevice" in the status output.
IPTABLES_STATUS_VERBOSE="no"
# Status output with numbered lines
# Value: yes|no, default: yes
# Print a counter/number for every rule in the status output.
IPTABLES_STATUS_LINENUMBERS="yes"
# Reload sysctl settings on start and restart
# Default: -none-
# Space separated list of sysctl items which are to be reloaded on start.
# List items will be matched by fgrep.
#IPTABLES_SYSCTL_LOAD_LIST=".nf_conntrack .bridge-nf"
# Set wait option for iptables-restore calls in seconds
# Default: 600
# Set to 0 to deactivate the wait.
#IPTABLES_RESTORE_WAIT=600
# Set wait interval option for iptables-restore calls in microseconds
# Default: 1000000
# Set to 100000 to try to get the lock every 100000 microseconds, 10 times a
# second.
# Only usable with IPTABLES_RESTORE_WAIT > 0
#IPTABLES_RESTORE_WAIT_INTERVAL=1000000

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#!/bin/bash
#
# iptables Start iptables firewall
#
# chkconfig: 2345 08 92
# description: Starts, stops and saves iptables firewall
#
# config: /etc/sysconfig/iptables
# config: /etc/sysconfig/iptables-config
#
### BEGIN INIT INFO
# Provides: iptables
# Required-Start:
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: start and stop iptables firewall
# Description: Start, stop and save iptables firewall
### END INIT INFO
# Source function library.
. /etc/init.d/functions
IPTABLES=iptables
IPTABLES_DATA=/etc/sysconfig/$IPTABLES
IPTABLES_FALLBACK_DATA=${IPTABLES_DATA}.fallback
IPTABLES_CONFIG=/etc/sysconfig/${IPTABLES}-config
IPV=${IPTABLES%tables} # ip for ipv4 | ip6 for ipv6
[ "$IPV" = "ip" ] && _IPV="ipv4" || _IPV="ipv6"
VAR_SUBSYS_IPTABLES=/var/lock/subsys/$IPTABLES
# only usable for root
if [ $EUID != 0 ]; then
echo -n $"${IPTABLES}: Only usable by root."; warning; echo
exit 4
fi
if [ ! -x /sbin/$IPTABLES ]; then
echo -n $"${IPTABLES}: /sbin/$IPTABLES does not exist."; warning; echo
exit 5
fi
# Default firewall configuration:
IPTABLES_MODULES=""
IPTABLES_SAVE_ON_STOP="no"
IPTABLES_SAVE_ON_RESTART="no"
IPTABLES_SAVE_COUNTER="no"
IPTABLES_STATUS_NUMERIC="yes"
IPTABLES_STATUS_VERBOSE="no"
IPTABLES_STATUS_LINENUMBERS="yes"
IPTABLES_SYSCTL_LOAD_LIST=""
IPTABLES_RESTORE_WAIT=600
IPTABLES_RESTORE_WAIT_INTERVAL=1000000
# Load firewall configuration.
[ -f "$IPTABLES_CONFIG" ] && . "$IPTABLES_CONFIG"
# explicitly omit security table from this list as
# it should be reserved for SELinux use
NF_TABLES="raw mangle filter nat"
flush_n_delete() {
# Flush firewall rules and delete chains.
echo -n $"${IPTABLES}: Flushing firewall rules: "
ret=0
# For all tables
for i in $NF_TABLES; do
# Flush firewall rules.
$IPTABLES -t $i -F;
let ret+=$?;
# Delete firewall chains.
$IPTABLES -t $i -X;
let ret+=$?;
# Set counter to zero.
$IPTABLES -t $i -Z;
let ret+=$?;
done
[ $ret -eq 0 ] && success || failure
echo
return $ret
}
set_policy() {
# Set policy for configured tables.
policy=$1
echo -n $"${IPTABLES}: Setting chains to policy $policy: "
ret=0
for i in $NF_TABLES; do
echo -n "$i "
case "$i" in
raw)
$IPTABLES -t raw -P PREROUTING $policy \
&& $IPTABLES -t raw -P OUTPUT $policy \
|| let ret+=1
;;
filter)
$IPTABLES -t filter -P INPUT $policy \
&& $IPTABLES -t filter -P OUTPUT $policy \
&& $IPTABLES -t filter -P FORWARD $policy \
|| let ret+=1
;;
nat)
$IPTABLES -t nat -P PREROUTING $policy \
&& $IPTABLES -t nat -P POSTROUTING $policy \
&& $IPTABLES -t nat -P OUTPUT $policy \
|| let ret+=1
;;
mangle)
$IPTABLES -t mangle -P PREROUTING $policy \
&& $IPTABLES -t mangle -P POSTROUTING $policy \
&& $IPTABLES -t mangle -P INPUT $policy \
&& $IPTABLES -t mangle -P OUTPUT $policy \
&& $IPTABLES -t mangle -P FORWARD $policy \
|| let ret+=1
;;
*)
let ret+=1
;;
esac
done
[ $ret -eq 0 ] && success || failure
echo
return $ret
}
load_sysctl() {
# load matched sysctl values
if [ -n "$IPTABLES_SYSCTL_LOAD_LIST" ]; then
echo -n $"Loading sysctl settings: "
ret=0
for item in $IPTABLES_SYSCTL_LOAD_LIST; do
fgrep -hs $item /etc/sysctl.d/*.conf | sysctl -p - >/dev/null
let ret+=$?;
done
[ $ret -eq 0 ] && success || failure
echo
fi
return $ret
}
start() {
# Do not start if there is no config file.
if [ ! -f "$IPTABLES_DATA" ]; then
echo -n $"${IPTABLES}: No config file."; warning; echo
return 6
fi
# check if ipv6 module load is deactivated
if [ "${_IPV}" = "ipv6" ] \
&& grep -qIsE "^install[[:space:]]+${_IPV}[[:space:]]+/bin/(true|false)" /etc/modprobe.conf /etc/modprobe.d/* ; then
echo $"${IPTABLES}: ${_IPV} is disabled."
return 150
fi
echo -n $"${IPTABLES}: Applying firewall rules: "
OPT=
[ "x$IPTABLES_SAVE_COUNTER" = "xyes" ] && OPT="-c"
if [ $IPTABLES_RESTORE_WAIT -ne 0 ]; then
OPT="${OPT} --wait ${IPTABLES_RESTORE_WAIT}"
if [ $IPTABLES_RESTORE_WAIT_INTERVAL -lt 1000000 ]; then
OPT="${OPT} --wait-interval ${IPTABLES_RESTORE_WAIT_INTERVAL}"
fi
fi
$IPTABLES-restore $OPT $IPTABLES_DATA
if [ $? -eq 0 ]; then
success; echo
else
failure; echo;
if [ -f "$IPTABLES_FALLBACK_DATA" ]; then
echo -n $"${IPTABLES}: Applying firewall fallback rules: "
$IPTABLES-restore $OPT $IPTABLES_FALLBACK_DATA
if [ $? -eq 0 ]; then
success; echo
else
failure; echo; return 1
fi
else
return 1
fi
fi
# Load additional modules (helpers)
if [ -n "$IPTABLES_MODULES" ]; then
echo -n $"${IPTABLES}: Loading additional modules: "
ret=0
for mod in $IPTABLES_MODULES; do
echo -n "$mod "
modprobe $mod > /dev/null 2>&1
let ret+=$?;
done
[ $ret -eq 0 ] && success || failure
echo
fi
# Load sysctl settings
load_sysctl
touch $VAR_SUBSYS_IPTABLES
return $ret
}
stop() {
# Set default chain policy to ACCEPT, in order to not break shutdown
# on systems where the default policy is DROP and root device is
# network-based (i.e.: iSCSI, NFS)
set_policy ACCEPT
# And then, flush the rules and delete chains
flush_n_delete
rm -f $VAR_SUBSYS_IPTABLES
return $ret
}
save() {
echo -n $"${IPTABLES}: Saving firewall rules to $IPTABLES_DATA: "
OPT=
[ "x$IPTABLES_SAVE_COUNTER" = "xyes" ] && OPT="-c"
ret=0
TMP_FILE=$(/bin/mktemp -q $IPTABLES_DATA.XXXXXX) \
&& chmod 600 "$TMP_FILE" \
&& $IPTABLES-save $OPT > $TMP_FILE 2>/dev/null \
&& size=$(stat -c '%s' $TMP_FILE) && [ $size -gt 0 ] \
|| ret=1
if [ $ret -eq 0 ]; then
if [ -e $IPTABLES_DATA ]; then
cp -f $IPTABLES_DATA $IPTABLES_DATA.save \
&& chmod 600 $IPTABLES_DATA.save \
&& restorecon $IPTABLES_DATA.save \
|| ret=1
fi
if [ $ret -eq 0 ]; then
mv -f $TMP_FILE $IPTABLES_DATA \
&& chmod 600 $IPTABLES_DATA \
&& restorecon $IPTABLES_DATA \
|| ret=1
fi
fi
rm -f $TMP_FILE
[ $ret -eq 0 ] && success || failure
echo
return $ret
}
status() {
if [ ! -f "$VAR_SUBSYS_IPTABLES" ]; then
echo $"${IPTABLES}: Firewall is not running."
return 3
fi
NUM=
[ "x$IPTABLES_STATUS_NUMERIC" = "xyes" ] && NUM="-n"
VERBOSE=
[ "x$IPTABLES_STATUS_VERBOSE" = "xyes" ] && VERBOSE="--verbose"
COUNT=
[ "x$IPTABLES_STATUS_LINENUMBERS" = "xyes" ] && COUNT="--line-numbers"
for table in $NF_TABLES; do
echo $"Table: $table"
$IPTABLES -t $table --list $NUM $VERBOSE $COUNT && echo
done
return 0
}
reload() {
# Do not reload if there is no config file.
if [ ! -f "$IPTABLES_DATA" ]; then
echo -n $"${IPTABLES}: No config file."; warning; echo
return 6
fi
# check if ipv6 module load is deactivated
if [ "${_IPV}" = "ipv6" ] \
&& grep -qIsE "^install[[:space:]]+${_IPV}[[:space:]]+/bin/(true|false)" /etc/modprobe.conf /etc/modprobe.d/* ; then
echo $"${IPTABLES}: ${_IPV} is disabled."
return 150
fi
echo -n $"${IPTABLES}: Trying to reload firewall rules: "
OPT=
[ "x$IPTABLES_SAVE_COUNTER" = "xyes" ] && OPT="-c"
if [ $IPTABLES_RESTORE_WAIT -ne 0 ]; then
OPT="${OPT} --wait ${IPTABLES_RESTORE_WAIT}"
if [ $IPTABLES_RESTORE_WAIT_INTERVAL -lt 1000000 ]; then
OPT="${OPT} --wait-interval ${IPTABLES_RESTORE_WAIT_INTERVAL}"
fi
fi
$IPTABLES-restore $OPT $IPTABLES_DATA
if [ $? -eq 0 ]; then
success; echo
else
failure; echo; echo "Firewall rules are not changed."; return 1
fi
# Load additional modules (helpers)
if [ -n "$IPTABLES_MODULES" ]; then
echo -n $"${IPTABLES}: Loading additional modules: "
ret=0
for mod in $IPTABLES_MODULES; do
echo -n "$mod "
modprobe $mod > /dev/null 2>&1
let ret+=$?;
done
[ $ret -eq 0 ] && success || failure
echo
fi
# Load sysctl settings
load_sysctl
return $ret
}
restart() {
[ "x$IPTABLES_SAVE_ON_RESTART" = "xyes" ] && save
stop
start
}
case "$1" in
start)
[ -f "$VAR_SUBSYS_IPTABLES" ] && exit 0
start
RETVAL=$?
;;
stop)
[ "x$IPTABLES_SAVE_ON_STOP" = "xyes" ] && save
stop
RETVAL=$?
;;
restart|force-reload)
restart
RETVAL=$?
;;
reload)
[ -e "$VAR_SUBSYS_IPTABLES" ] && reload
RETVAL=$?
;;
condrestart|try-restart)
[ ! -e "$VAR_SUBSYS_IPTABLES" ] && exit 0
restart
RETVAL=$?
;;
status)
status
RETVAL=$?
;;
panic)
set_policy DROP
RETVAL=$?
;;
save)
save
RETVAL=$?
;;
*)
echo $"Usage: ${IPTABLES} {start|stop|reload|restart|condrestart|status|panic|save}"
RETVAL=2
;;
esac
exit $RETVAL

19
SOURCES/iptables.service Normal file
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[Unit]
Description=IPv4 firewall with iptables
AssertPathExists=/etc/sysconfig/iptables
Before=network-pre.target
Wants=network-pre.target
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/libexec/iptables/iptables.init start
ExecReload=/usr/libexec/iptables/iptables.init reload
ExecStop=/usr/libexec/iptables/iptables.init stop
Environment=BOOTUP=serial
Environment=CONSOLETYPE=serial
StandardOutput=syslog
StandardError=syslog
[Install]
WantedBy=multi-user.target

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SOURCES/sysconfig_ip6tables Normal file
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# sample configuration for ip6tables service
# you can edit this manually or use system-config-firewall
# please do not ask us to add additional ports/services to this default configuration
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p ipv6-icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -d fe80::/64 -p udp -m udp --dport 546 -m state --state NEW -j ACCEPT
-A INPUT -j REJECT --reject-with icmp6-adm-prohibited
-A FORWARD -j REJECT --reject-with icmp6-adm-prohibited
COMMIT

14
SOURCES/sysconfig_iptables Normal file
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# sample configuration for iptables service
# you can edit this manually or use system-config-firewall
# please do not ask us to add additional ports/services to this default configuration
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

1687
SPECS/iptables.spec Normal file
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