Adding a parser which supports common names for special MAC/mask
combinations and a print routine detecting those special addresses and
printing the respective name allows to consolidate all the various
duplicated implementations.
The side-effects of this change are manageable:
* arptables now accepts "BGA" as alias for the bridge group address
* "mac" match now prints MAC addresses in lower-case which is consistent
with the remaining code at least
Signed-off-by: Phil Sutter <phil@xxxxxx>
---
extensions/libarpt_mangle.c | 13 +---
extensions/libebt_arp.c | 50 +------------
extensions/libebt_stp.c | 60 ++-------------
extensions/libxt_mac.c | 15 +---
include/xtables.h | 3 +
iptables/nft-bridge.c | 37 +---------
.../ipt-save/dumps/ipt-save-filter.txt | 4 +-
iptables/xtables-arp.c | 50 +------------
iptables/xtables-eb-translate.c | 8 +-
iptables/xtables-eb.c | 59 ++-------------
libxtables/xtables.c | 73 +++++++++++++++++++
11 files changed, 106 insertions(+), 266 deletions(-)
diff --git a/extensions/libarpt_mangle.c b/extensions/libarpt_mangle.c
index 2fea6185ca1b5..a2378a8ba6ccb 100644
--- a/extensions/libarpt_mangle.c
+++ b/extensions/libarpt_mangle.c
@@ -130,15 +130,6 @@ static void arpmangle_final_check(unsigned int flags)
{
}
-static void print_mac(const unsigned char *mac, int l)
-{
- int j;
-
- for (j = 0; j < l; j++)
- printf("%02x%s", mac[j],
- (j==l-1) ? "" : ":");
-}
-
static const char *ipaddr_to(const struct in_addr *addrp, int numeric)
{
if (numeric)
@@ -159,7 +150,7 @@ arpmangle_print(const void *ip, const struct xt_entry_target *target,
}
if (m->flags & ARPT_MANGLE_SDEV) {
printf(" --mangle-mac-s ");
- print_mac((unsigned char *)m->src_devaddr, 6);
+ xtables_print_mac((unsigned char *)m->src_devaddr);
}
if (m->flags & ARPT_MANGLE_TIP) {
printf(" --mangle-ip-d %s",
@@ -167,7 +158,7 @@ arpmangle_print(const void *ip, const struct xt_entry_target *target,
}
if (m->flags & ARPT_MANGLE_TDEV) {
printf(" --mangle-mac-d ");
- print_mac((unsigned char *)m->tgt_devaddr, 6);
+ xtables_print_mac((unsigned char *)m->tgt_devaddr);
}
if (m->target != NF_ACCEPT) {
printf(" --mangle-target %s",
diff --git a/extensions/libebt_arp.c b/extensions/libebt_arp.c
index a062b7e7e5864..d5035b956cc15 100644
--- a/extensions/libebt_arp.c
+++ b/extensions/libebt_arp.c
@@ -161,54 +161,6 @@ static void ebt_parse_ip_address(char *address, uint32_t *addr, uint32_t *msk)
*addr = *addr & *msk;
}
-static int brarp_get_mac_and_mask(const char *from, unsigned char *to, unsigned char *mask)
-{
- char *p;
- int i;
- struct ether_addr *addr = NULL;
-
- static const unsigned char mac_type_unicast[ETH_ALEN];
- static const unsigned char msk_type_unicast[ETH_ALEN] = {1,0,0,0,0,0};
- static const unsigned char mac_type_multicast[ETH_ALEN] = {1,0,0,0,0,0};
- static const unsigned char mac_type_broadcast[ETH_ALEN] = {255,255,255,255,255,255};
- static const unsigned char mac_type_bridge_group[ETH_ALEN] = {0x01,0x80,0xc2,0,0,0};
- static const unsigned char msk_type_bridge_group[ETH_ALEN] = {255,255,255,255,255,255};
-
- if (strcasecmp(from, "Unicast") == 0) {
- memcpy(to, mac_type_unicast, ETH_ALEN);
- memcpy(mask, msk_type_unicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Multicast") == 0) {
- memcpy(to, mac_type_multicast, ETH_ALEN);
- memcpy(mask, mac_type_multicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Broadcast") == 0) {
- memcpy(to, mac_type_broadcast, ETH_ALEN);
- memcpy(mask, mac_type_broadcast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "BGA") == 0) {
- memcpy(to, mac_type_bridge_group, ETH_ALEN);
- memcpy(mask, msk_type_bridge_group, ETH_ALEN);
- return 0;
- }
- if ( (p = strrchr(from, '/')) != NULL) {
- *p = '\0';
- if (!(addr = ether_aton(p + 1)))
- return -1;
- memcpy(mask, addr, ETH_ALEN);
- } else
- memset(mask, 0xff, ETH_ALEN);
- if (!(addr = ether_aton(from)))
- return -1;
- memcpy(to, addr, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- to[i] &= mask[i];
- return 0;
-}
-
static int
brarp_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_match **match)
@@ -317,7 +269,7 @@ brarp_parse(int c, char **argv, int invert, unsigned int *flags,
else
arpinfo->invflags |= EBT_ARP_DST_MAC;
}
- if (brarp_get_mac_and_mask(optarg, maddr, mmask))
+ if (xtables_parse_mac_and_mask(optarg, maddr, mmask))
xtables_error(PARAMETER_PROBLEM, "Problem with ARP MAC address argument");
break;
case ARP_GRAT:
diff --git a/extensions/libebt_stp.c b/extensions/libebt_stp.c
index 06cf93b8d8449..81ba572c33c1a 100644
--- a/extensions/libebt_stp.c
+++ b/extensions/libebt_stp.c
@@ -150,54 +150,6 @@ static void print_range(unsigned int l, unsigned int u)
printf("%u:%u ", l, u);
}
-static int brstp_get_mac_and_mask(const char *from, unsigned char *to, unsigned char *mask)
-{
- char *p;
- int i;
- struct ether_addr *addr = NULL;
-
- static const unsigned char mac_type_unicast[ETH_ALEN];
- static const unsigned char msk_type_unicast[ETH_ALEN] = {1,0,0,0,0,0};
- static const unsigned char mac_type_multicast[ETH_ALEN] = {1,0,0,0,0,0};
- static const unsigned char mac_type_broadcast[ETH_ALEN] = {255,255,255,255,255,255};
- static const unsigned char mac_type_bridge_group[ETH_ALEN] = {0x01,0x80,0xc2,0,0,0};
- static const unsigned char msk_type_bridge_group[ETH_ALEN] = {255,255,255,255,255,255};
-
- if (strcasecmp(from, "Unicast") == 0) {
- memcpy(to, mac_type_unicast, ETH_ALEN);
- memcpy(mask, msk_type_unicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Multicast") == 0) {
- memcpy(to, mac_type_multicast, ETH_ALEN);
- memcpy(mask, mac_type_multicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Broadcast") == 0) {
- memcpy(to, mac_type_broadcast, ETH_ALEN);
- memcpy(mask, mac_type_broadcast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "BGA") == 0) {
- memcpy(to, mac_type_bridge_group, ETH_ALEN);
- memcpy(mask, msk_type_bridge_group, ETH_ALEN);
- return 0;
- }
- if ( (p = strrchr(from, '/')) != NULL) {
- *p = '\0';
- if (!(addr = ether_aton(p + 1)))
- return -1;
- memcpy(mask, addr, ETH_ALEN);
- } else
- memset(mask, 0xff, ETH_ALEN);
- if (!(addr = ether_aton(from)))
- return -1;
- memcpy(to, addr, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- to[i] &= mask[i];
- return 0;
-}
-
static int
brstp_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_match **match)
@@ -280,15 +232,15 @@ brstp_parse(int c, char **argv, int invert, unsigned int *flags,
xtables_error(PARAMETER_PROBLEM, "Bad --stp-forward-delay range");
break;
case EBT_STP_ROOTADDR:
- if (brstp_get_mac_and_mask(argv[optind-1],
- (unsigned char *)stpinfo->config.root_addr,
- (unsigned char *)stpinfo->config.root_addrmsk))
+ if (xtables_parse_mac_and_mask(argv[optind-1],
+ stpinfo->config.root_addr,
+ stpinfo->config.root_addrmsk))
xtables_error(PARAMETER_PROBLEM, "Bad --stp-root-addr address");
break;
case EBT_STP_SENDERADDR:
- if (brstp_get_mac_and_mask(argv[optind-1],
- (unsigned char *)stpinfo->config.sender_addr,
- (unsigned char *)stpinfo->config.sender_addrmsk))
+ if (xtables_parse_mac_and_mask(argv[optind-1],
+ stpinfo->config.sender_addr,
+ stpinfo->config.sender_addrmsk))
xtables_error(PARAMETER_PROBLEM, "Bad --stp-sender-addr address");
break;
default:
diff --git a/extensions/libxt_mac.c b/extensions/libxt_mac.c
index b6d717bcf86f0..b90eef207c98e 100644
--- a/extensions/libxt_mac.c
+++ b/extensions/libxt_mac.c
@@ -37,15 +37,6 @@ static void mac_parse(struct xt_option_call *cb)
macinfo->invert = 1;
}
-static void print_mac(const unsigned char *macaddress)
-{
- unsigned int i;
-
- printf(" %02X", macaddress[0]);
- for (i = 1; i < ETH_ALEN; ++i)
- printf(":%02X", macaddress[i]);
-}
-
static void
mac_print(const void *ip, const struct xt_entry_match *match, int numeric)
{
@@ -56,7 +47,7 @@ mac_print(const void *ip, const struct xt_entry_match *match, int numeric)
if (info->invert)
printf(" !");
- print_mac(info->srcaddr);
+ xtables_print_mac(info->srcaddr);
}
static void mac_save(const void *ip, const struct xt_entry_match *match)
@@ -66,8 +57,8 @@ static void mac_save(const void *ip, const struct xt_entry_match *match)
if (info->invert)
printf(" !");
- printf(" --mac-source");
- print_mac(info->srcaddr);
+ printf(" --mac-source ");
+ xtables_print_mac(info->srcaddr);
}
static void print_mac_xlate(const unsigned char *macaddress,
diff --git a/include/xtables.h b/include/xtables.h
index 5044dd08e86d3..df1eaee326643 100644
--- a/include/xtables.h
+++ b/include/xtables.h
@@ -557,6 +557,9 @@ extern void xtables_save_string(const char *value);
#define FMT(tab,notab) ((format) & FMT_NOTABLE ? (notab) : (tab))
extern void xtables_print_num(uint64_t number, unsigned int format);
+extern int xtables_parse_mac_and_mask(const char *from, void *to, void *mask);
+extern int xtables_print_well_known_mac_and_mask(const void *mac,
+ const void *mask);
extern void xtables_print_mac(const unsigned char *macaddress);
extern void xtables_print_mac_and_mask(const unsigned char *mac,
const unsigned char *mask);
diff --git a/iptables/nft-bridge.c b/iptables/nft-bridge.c
index c1a2c209cc1aa..d98fd527d9549 100644
--- a/iptables/nft-bridge.c
+++ b/iptables/nft-bridge.c
@@ -58,44 +58,11 @@ void ebt_cs_clean(struct iptables_command_state *cs)
}
}
-static void ebt_print_mac(const unsigned char *mac)
-{
- int j;
-
- for (j = 0; j < ETH_ALEN; j++)
- printf("%02x%s", mac[j], (j==ETH_ALEN-1) ? "" : ":");
-}
-
-static bool mac_all_ones(const unsigned char *mac)
-{
- static const char hlpmsk[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-
- return memcmp(mac, hlpmsk, sizeof(hlpmsk)) == 0;
-}
-
/* Put the mac address into 6 (ETH_ALEN) bytes returns 0 on success. */
static void ebt_print_mac_and_mask(const unsigned char *mac, const unsigned char *mask)
{
-
- if (!memcmp(mac, eb_mac_type_unicast, 6) &&
- !memcmp(mask, eb_msk_type_unicast, 6))
- printf("Unicast");
- else if (!memcmp(mac, eb_mac_type_multicast, 6) &&
- !memcmp(mask, eb_msk_type_multicast, 6))
- printf("Multicast");
- else if (!memcmp(mac, eb_mac_type_broadcast, 6) &&
- !memcmp(mask, eb_msk_type_broadcast, 6))
- printf("Broadcast");
- else if (!memcmp(mac, eb_mac_type_bridge_group, 6) &&
- !memcmp(mask, eb_msk_type_bridge_group, 6))
- printf("BGA");
- else {
- ebt_print_mac(mac);
- if (!mac_all_ones(mask)) {
- printf("/");
- ebt_print_mac(mask);
- }
- }
+ if (xtables_print_well_known_mac_and_mask(mac, mask))
+ xtables_print_mac_and_mask(mac, mask);
}
static void add_logical_iniface(struct nftnl_rule *r, char *iface, uint32_t op)
diff --git a/iptables/tests/shell/testcases/ipt-save/dumps/ipt-save-filter.txt b/iptables/tests/shell/testcases/ipt-save/dumps/ipt-save-filter.txt
index bfb6bdda57faf..6e42de78433ec 100644
--- a/iptables/tests/shell/testcases/ipt-save/dumps/ipt-save-filter.txt
+++ b/iptables/tests/shell/testcases/ipt-save/dumps/ipt-save-filter.txt
@@ -40,8 +40,8 @@
-A OUTPUT -s 127.0.0.1/32 -d 127.0.0.1/32 -o lo -j ACCEPT
-A OUTPUT -o wlan0 -j wlanout
-A OUTPUT -j block
--A WLAN -s 192.168.200.4/32 -m mac --mac-source 00:00:F1:05:A0:E0 -j RETURN
--A WLAN -s 192.168.200.9/32 -m mac --mac-source 00:00:F1:05:99:85 -j RETURN
+-A WLAN -s 192.168.200.4/32 -m mac --mac-source 00:00:f1:05:a0:e0 -j RETURN
+-A WLAN -s 192.168.200.9/32 -m mac --mac-source 00:00:f1:05:99:85 -j RETURN
-A WLAN -m limit --limit 12/min -j LOG --log-prefix "UNKNOWN WLAN dropped:"
-A WLAN -j DROP
-A accept_log -i ppp0 -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 1/sec -j LOG --log-prefix "TCPConnect on ppp0:"
diff --git a/iptables/xtables-arp.c b/iptables/xtables-arp.c
index 8632774dfb705..e56bbb4dd0363 100644
--- a/iptables/xtables-arp.c
+++ b/iptables/xtables-arp.c
@@ -135,52 +135,6 @@ static int inverse_for_options[] =
/* ARPTABLES SPECIFIC NEW FUNCTIONS ADDED HERE */
/***********************************************/
-static unsigned char mac_type_unicast[ETH_ALEN] = {0,0,0,0,0,0};
-static unsigned char msk_type_unicast[ETH_ALEN] = {1,0,0,0,0,0};
-static unsigned char mac_type_multicast[ETH_ALEN] = {1,0,0,0,0,0};
-static unsigned char msk_type_multicast[ETH_ALEN] = {1,0,0,0,0,0};
-static unsigned char mac_type_broadcast[ETH_ALEN] = {255,255,255,255,255,255};
-static unsigned char msk_type_broadcast[ETH_ALEN] = {255,255,255,255,255,255};
-
-/*
- * put the mac address into 6 (ETH_ALEN) bytes
- */
-static int getmac_and_mask(char *from, char *to, char *mask)
-{
- char *p;
- int i;
- struct ether_addr *addr;
-
- if (strcasecmp(from, "Unicast") == 0) {
- memcpy(to, mac_type_unicast, ETH_ALEN);
- memcpy(mask, msk_type_unicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Multicast") == 0) {
- memcpy(to, mac_type_multicast, ETH_ALEN);
- memcpy(mask, msk_type_multicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Broadcast") == 0) {
- memcpy(to, mac_type_broadcast, ETH_ALEN);
- memcpy(mask, msk_type_broadcast, ETH_ALEN);
- return 0;
- }
- if ( (p = strrchr(from, '/')) != NULL) {
- *p = '\0';
- if (!(addr = ether_aton(p + 1)))
- return -1;
- memcpy(mask, addr, ETH_ALEN);
- } else
- memset(mask, 0xff, ETH_ALEN);
- if (!(addr = ether_aton(from)))
- return -1;
- memcpy(to, addr, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- to[i] &= mask[i];
- return 0;
-}
-
static int getlength_and_mask(char *from, uint8_t *to, uint8_t *mask)
{
char *p, *buffer;
@@ -686,7 +640,7 @@ int do_commandarp(struct nft_handle *h, int argc, char *argv[], char **table,
check_inverse(optarg, &invert, &optind, argc);
set_option(&options, OPT_S_MAC, &cs.arp.arp.invflags,
invert);
- if (getmac_and_mask(argv[optind - 1],
+ if (xtables_parse_mac_and_mask(argv[optind - 1],
cs.arp.arp.src_devaddr.addr, cs.arp.arp.src_devaddr.mask))
xtables_error(PARAMETER_PROBLEM, "Problem with specified "
"source mac");
@@ -697,7 +651,7 @@ int do_commandarp(struct nft_handle *h, int argc, char *argv[], char **table,
set_option(&options, OPT_D_MAC, &cs.arp.arp.invflags,
invert);
- if (getmac_and_mask(argv[optind - 1],
+ if (xtables_parse_mac_and_mask(argv[optind - 1],
cs.arp.arp.tgt_devaddr.addr, cs.arp.arp.tgt_devaddr.mask))
xtables_error(PARAMETER_PROBLEM, "Problem with specified "
"destination mac");
diff --git a/iptables/xtables-eb-translate.c b/iptables/xtables-eb-translate.c
index 96b2730fa97ed..83ae77cb07fb2 100644
--- a/iptables/xtables-eb-translate.c
+++ b/iptables/xtables-eb-translate.c
@@ -397,7 +397,9 @@ print_zero:
if (ebt_check_inverse2(optarg, argc, argv))
cs.eb.invflags |= EBT_ISOURCE;
- if (ebt_get_mac_and_mask(optarg, cs.eb.sourcemac, cs.eb.sourcemsk))
+ if (xtables_parse_mac_and_mask(optarg,
+ cs.eb.sourcemac,
+ cs.eb.sourcemsk))
xtables_error(PARAMETER_PROBLEM, "Problem with specified source mac '%s'", optarg);
cs.eb.bitmask |= EBT_SOURCEMAC;
break;
@@ -406,7 +408,9 @@ print_zero:
if (ebt_check_inverse2(optarg, argc, argv))
cs.eb.invflags |= EBT_IDEST;
- if (ebt_get_mac_and_mask(optarg, cs.eb.destmac, cs.eb.destmsk))
+ if (xtables_parse_mac_and_mask(optarg,
+ cs.eb.destmac,
+ cs.eb.destmsk))
xtables_error(PARAMETER_PROBLEM, "Problem with specified destination mac '%s'", optarg);
cs.eb.bitmask |= EBT_DESTMAC;
break;
diff --git a/iptables/xtables-eb.c b/iptables/xtables-eb.c
index 6641a21a72d32..b379c0e5119f1 100644
--- a/iptables/xtables-eb.c
+++ b/iptables/xtables-eb.c
@@ -55,57 +55,6 @@
* 1: the inverse '!' of the option has already been specified */
int ebt_invert = 0;
-unsigned char eb_mac_type_unicast[ETH_ALEN] = {0,0,0,0,0,0};
-unsigned char eb_msk_type_unicast[ETH_ALEN] = {1,0,0,0,0,0};
-unsigned char eb_mac_type_multicast[ETH_ALEN] = {1,0,0,0,0,0};
-unsigned char eb_msk_type_multicast[ETH_ALEN] = {1,0,0,0,0,0};
-unsigned char eb_mac_type_broadcast[ETH_ALEN] = {255,255,255,255,255,255};
-unsigned char eb_msk_type_broadcast[ETH_ALEN] = {255,255,255,255,255,255};
-unsigned char eb_mac_type_bridge_group[ETH_ALEN] = {0x01,0x80,0xc2,0,0,0};
-unsigned char eb_msk_type_bridge_group[ETH_ALEN] = {255,255,255,255,255,255};
-
-int ebt_get_mac_and_mask(const char *from, unsigned char *to,
- unsigned char *mask)
-{
- char *p;
- int i;
- struct ether_addr *addr = NULL;
-
- if (strcasecmp(from, "Unicast") == 0) {
- memcpy(to, eb_mac_type_unicast, ETH_ALEN);
- memcpy(mask, eb_msk_type_unicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Multicast") == 0) {
- memcpy(to, eb_mac_type_multicast, ETH_ALEN);
- memcpy(mask, eb_msk_type_multicast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "Broadcast") == 0) {
- memcpy(to, eb_mac_type_broadcast, ETH_ALEN);
- memcpy(mask, eb_msk_type_broadcast, ETH_ALEN);
- return 0;
- }
- if (strcasecmp(from, "BGA") == 0) {
- memcpy(to, eb_mac_type_bridge_group, ETH_ALEN);
- memcpy(mask, eb_msk_type_bridge_group, ETH_ALEN);
- return 0;
- }
- if ( (p = strrchr(from, '/')) != NULL) {
- *p = '\0';
- if (!(addr = ether_aton(p + 1)))
- return -1;
- memcpy(mask, addr, ETH_ALEN);
- } else
- memset(mask, 0xff, ETH_ALEN);
- if (!(addr = ether_aton(from)))
- return -1;
- memcpy(to, addr, ETH_ALEN);
- for (i = 0; i < ETH_ALEN; i++)
- to[i] &= mask[i];
- return 0;
-}
-
static int ebt_check_inverse2(const char option[], int argc, char **argv)
{
if (!option)
@@ -1037,7 +986,9 @@ print_zero:
if (ebt_check_inverse2(optarg, argc, argv))
cs.eb.invflags |= EBT_ISOURCE;
- if (ebt_get_mac_and_mask(optarg, cs.eb.sourcemac, cs.eb.sourcemsk))
+ if (xtables_parse_mac_and_mask(optarg,
+ cs.eb.sourcemac,
+ cs.eb.sourcemsk))
xtables_error(PARAMETER_PROBLEM, "Problem with specified source mac '%s'", optarg);
cs.eb.bitmask |= EBT_SOURCEMAC;
break;
@@ -1046,7 +997,9 @@ print_zero:
if (ebt_check_inverse2(optarg, argc, argv))
cs.eb.invflags |= EBT_IDEST;
- if (ebt_get_mac_and_mask(optarg, cs.eb.destmac, cs.eb.destmsk))
+ if (xtables_parse_mac_and_mask(optarg,
+ cs.eb.destmac,
+ cs.eb.destmsk))
xtables_error(PARAMETER_PROBLEM, "Problem with specified destination mac '%s'", optarg);
cs.eb.bitmask |= EBT_DESTMAC;
break;
diff --git a/libxtables/xtables.c b/libxtables/xtables.c
index 7152c6576cd63..bc42ba8221f3a 100644
--- a/libxtables/xtables.c
+++ b/libxtables/xtables.c
@@ -2137,6 +2137,79 @@ void xtables_print_num(uint64_t number, unsigned int format)
printf(FMT("%4lluT ","%lluT "), (unsigned long long)number);
}
+#include <netinet/ether.h>
+
+static const unsigned char mac_type_unicast[ETH_ALEN] = {};
+static const unsigned char msk_type_unicast[ETH_ALEN] = {1};
+static const unsigned char mac_type_multicast[ETH_ALEN] = {1};
+static const unsigned char msk_type_multicast[ETH_ALEN] = {1};
+#define ALL_ONE_MAC {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}
+static const unsigned char mac_type_broadcast[ETH_ALEN] = ALL_ONE_MAC;
+static const unsigned char msk_type_broadcast[ETH_ALEN] = ALL_ONE_MAC;
+static const unsigned char mac_type_bridge_group[ETH_ALEN] = {0x01, 0x80, 0xc2};
+static const unsigned char msk_type_bridge_group[ETH_ALEN] = ALL_ONE_MAC;
+#undef ALL_ONE_MAC
+
+int xtables_parse_mac_and_mask(const char *from, void *to, void *mask)
+{
+ char *p;
+ int i;
+ struct ether_addr *addr = NULL;
+
+ if (strcasecmp(from, "Unicast") == 0) {
+ memcpy(to, mac_type_unicast, ETH_ALEN);
+ memcpy(mask, msk_type_unicast, ETH_ALEN);
+ return 0;
+ }
+ if (strcasecmp(from, "Multicast") == 0) {
+ memcpy(to, mac_type_multicast, ETH_ALEN);
+ memcpy(mask, msk_type_multicast, ETH_ALEN);
+ return 0;
+ }
+ if (strcasecmp(from, "Broadcast") == 0) {
+ memcpy(to, mac_type_broadcast, ETH_ALEN);
+ memcpy(mask, msk_type_broadcast, ETH_ALEN);
+ return 0;
+ }
+ if (strcasecmp(from, "BGA") == 0) {
+ memcpy(to, mac_type_bridge_group, ETH_ALEN);
+ memcpy(mask, msk_type_bridge_group, ETH_ALEN);
+ return 0;
+ }
+ if ( (p = strrchr(from, '/')) != NULL) {
+ *p = '\0';
+ if (!(addr = ether_aton(p + 1)))
+ return -1;
+ memcpy(mask, addr, ETH_ALEN);
+ } else
+ memset(mask, 0xff, ETH_ALEN);
+ if (!(addr = ether_aton(from)))
+ return -1;
+ memcpy(to, addr, ETH_ALEN);
+ for (i = 0; i < ETH_ALEN; i++)
+ ((char *)to)[i] &= ((char *)mask)[i];
+ return 0;
+}
+
+int xtables_print_well_known_mac_and_mask(const void *mac, const void *mask)
+{
+ if (!memcmp(mac, mac_type_unicast, ETH_ALEN) &&
+ !memcmp(mask, msk_type_unicast, ETH_ALEN))
+ printf("Unicast");
+ else if (!memcmp(mac, mac_type_multicast, ETH_ALEN) &&
+ !memcmp(mask, msk_type_multicast, ETH_ALEN))
+ printf("Multicast");
+ else if (!memcmp(mac, mac_type_broadcast, ETH_ALEN) &&
+ !memcmp(mask, msk_type_broadcast, ETH_ALEN))
+ printf("Broadcast");
+ else if (!memcmp(mac, mac_type_bridge_group, ETH_ALEN) &&
+ !memcmp(mask, msk_type_bridge_group, ETH_ALEN))
+ printf("BGA");
+ else
+ return -1;
+ return 0;
+}
+
void xtables_print_mac(const unsigned char *macaddress)
{
unsigned int i;
--
2.28.0
