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import iptables-1.8.4-15.el8

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CentOS Sources 2020-11-03 06:47:59 -05:00 committed by Andrew Lukoshko
parent 94389dbbc5
commit ec7bd8a053
13 changed files with 923 additions and 62 deletions
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274
SOURCES/0015-xtables-Review-nft_init.patch Normal file
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@ -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

43
SOURCES/0015-xtables-monitor-Fix-segfault-when-tracing.patch
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@ -1,43 +0,0 @@
From 6857a112296dee96966212a88bf671bd76467d95 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Mon, 24 Feb 2020 16:14:16 +0100
Subject: [PATCH] xtables-monitor: Fix segfault when tracing
This is a minimal fix extracted from upstream commit d0446ab11182f
("xtables: Review nft_init()") which was deemed too untrusive for late
inclusion into RHEL8.2.
(cherry picked from commit e6445667fd0f141ca301aeabeee312545dbf014a)
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
iptables/xtables-monitor.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/iptables/xtables-monitor.c b/iptables/xtables-monitor.c
index a5245d1422af9..737c35f2ac60c 100644
--- a/iptables/xtables-monitor.c
+++ b/iptables/xtables-monitor.c
@@ -595,7 +595,9 @@ int xtables_monitor_main(int argc, char *argv[])
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
uint32_t nfgroup = 0;
- struct nft_handle h = {};
+ struct nft_handle h = {
+ .family = AF_INET,
+ };
struct cb_arg cb_arg = {
.h = &h,
};
@@ -622,6 +624,9 @@ int xtables_monitor_main(int argc, char *argv[])
strerror(errno));
exit(EXIT_FAILURE);
}
+ h.ops = nft_family_ops_lookup(h.family);
+ if (!h.ops)
+ xtables_error(PARAMETER_PROBLEM, "Unknown family");
opterr = 0;
while ((c = getopt_long(argc, argv, "ceht46V", options, NULL)) != -1) {
--
2.25.1

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

4
SOURCES/0018-nft-cache-Reset-genid-when-rebuilding-cache.patch → SOURCES/0023-nft-cache-Reset-genid-when-rebuilding-cache.patch
View File

@ -1,4 +1,4 @@
From f2f7731420d56e7164d352d62184408d9570bef1 Mon Sep 17 00:00:00 2001
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
@ -33,5 +33,5 @@ index 07265b7795e4f..bc6e7f7eaebfb 100644
__nft_build_cache(h, level, NULL, NULL, NULL);
}
--
2.27.0
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

2
SOURCES/iptables.init
View File

@ -134,7 +134,7 @@ load_sysctl() {
echo -n $"Loading sysctl settings: "
ret=0
for item in $IPTABLES_SYSCTL_LOAD_LIST; do
fgrep -hs $item /etc/sysctl.d/* | sysctl -p - >/dev/null
fgrep -hs $item /etc/sysctl.d/*.conf | sysctl -p - >/dev/null
let ret+=$?;
done
[ $ret -eq 0 ] && success || failure

5
SOURCES/iptables.service
View File

@ -1,7 +1,8 @@
[Unit]
Description=IPv4 firewall with iptables
After=syslog.target
AssertPathExists=/etc/sysconfig/iptables
Before=network-pre.target
Wants=network-pre.target
[Service]
Type=oneshot
@ -15,4 +16,4 @@ StandardOutput=syslog
StandardError=syslog
[Install]
WantedBy=basic.target
WantedBy=multi-user.target

52
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: 10%{?dist}.1
Release: 15%{?dist}
Source: %{url}/files/%{name}-%{version}.tar.bz2
Source1: iptables.init
Source2: iptables-config
@ -34,24 +34,31 @@ Source11: %{url}/files/%{name}-%{version_old}.tar.bz2
Source12: 0003-extensions-format-security-fixes-in-libip-6-t_icmp.patch
%endif
Patch1: 0001-iptables-apply-Use-mktemp-instead-of-tempfile.patch
Patch2: 0002-xtables-restore-Fix-parser-feed-from-line-buffer.patch
Patch3: 0003-xtables-restore-Avoid-access-of-uninitialized-data.patch
Patch4: 0004-extensions-time-Avoid-undefined-shift.patch
Patch5: 0005-extensions-cluster-Avoid-undefined-shift.patch
Patch6: 0006-libxtables-Avoid-buffer-overrun-in-xtables_compatibl.patch
Patch7: 0007-xtables-translate-Guard-strcpy-call-in-xlate_ifname.patch
Patch8: 0008-extensions-among-Check-call-to-fstat.patch
Patch9: 0009-uapi-netfilter-Avoid-undefined-left-shift-in-xt_sctp.patch
Patch01: 0001-iptables-apply-Use-mktemp-instead-of-tempfile.patch
Patch02: 0002-xtables-restore-Fix-parser-feed-from-line-buffer.patch
Patch03: 0003-xtables-restore-Avoid-access-of-uninitialized-data.patch
Patch04: 0004-extensions-time-Avoid-undefined-shift.patch
Patch05: 0005-extensions-cluster-Avoid-undefined-shift.patch
Patch06: 0006-libxtables-Avoid-buffer-overrun-in-xtables_compatibl.patch
Patch07: 0007-xtables-translate-Guard-strcpy-call-in-xlate_ifname.patch
Patch08: 0008-extensions-among-Check-call-to-fstat.patch
Patch09: 0009-uapi-netfilter-Avoid-undefined-left-shift-in-xt_sctp.patch
Patch10: 0010-xtables-translate-Fix-for-interface-name-corner-case.patch
Patch11: 0011-xtables-translate-Fix-for-iface.patch
Patch12: 0012-tests-shell-Fix-skip-checks-with-host-mode.patch
Patch13: 0013-xtables-restore-fix-for-noflush-and-empty-lines.patch
Patch14: 0014-iptables-test.py-Fix-host-mode.patch
Patch15: 0015-xtables-monitor-Fix-segfault-when-tracing.patch
Patch15: 0015-xtables-Review-nft_init.patch
Patch16: 0016-nft-cache-Fix-nft_release_cache-under-stress.patch
Patch17: 0017-nft-cache-Fix-iptables-save-segfault-under-stress.patch
Patch18: 0018-nft-cache-Reset-genid-when-rebuilding-cache.patch
Patch18: 0018-ebtables-among-Support-mixed-MAC-and-MAC-IP-entries.patch
Patch19: 0019-xtables-Align-effect-of-4-6-options-with-legacy.patch
Patch20: 0020-xtables-Drop-4-and-6-support-from-xtables-save-resto.patch
Patch21: 0021-nfnl_osf-Fix-broken-conversion-to-nfnl_query.patch
Patch22: 0022-nfnl_osf-Improve-error-handling.patch
Patch23: 0023-nft-cache-Reset-genid-when-rebuilding-cache.patch
Patch24: 0024-nft-Fix-for-F-in-iptables-dumps.patch
Patch25: 0025-tests-shell-Test-F-in-dump-files.patch
# pf.os: ISC license
# iptables-apply: Artistic Licence 2.0
@ -460,8 +467,25 @@ done
%doc %{_mandir}/man8/ebtables*.8*
%changelog
* Tue Jun 09 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-10.1
- Fix for hanging iptables-restore --test
* Sat Aug 15 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-15
- Ignore sysctl files not suffixed '.conf'
* Wed Jun 24 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-14
- nft: Fix for '-F' in iptables dumps
- tests: shell: Test -F in dump files
* Fri May 29 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-13
- Fix for endless loop in iptables-restore --test
* Tue May 26 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-12
- Unbreak nfnl_osf tool
* Tue May 19 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-11
- Complete ebtables-nft among match support
- Replace RHEL-only xtables-monitor fix with upstream solution
- xtables: Align effect of -4/-6 options with legacy
- xtables: Drop -4 and -6 support from xtables-{save,restore}
- Review systemd unit files
* Tue Mar 17 2020 Phil Sutter <psutter@redhat.com> - 1.8.4-10
- Fix for iptables-restore segfault under pressure