Amazing-Mirror/fragattacks
1
0
Fork 0
mirror of https://github.com/vanhoefm/fragattacks.git synced 2024-11-25 00:38:24 -05:00
Code Issues Projects Releases Wiki Activity

AP: Add a generic "x_snoop" infrastructure for Proxy ARP

Browse Source 
Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
This commit is contained in:
Kyeyoon Park 2014-10-31 18:18:35 -07:00 committed by Jouni Malinen
parent 077f13c3e1
commit c127355cb8
3 changed files with 138 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
hostapd/Makefile
View File

@ -853,6 +853,7 @@ endif
ifdef CONFIG_PROXYARP
CFLAGS += -DCONFIG_PROXYARP
OBJS += ../src/ap/x_snoop.o
OBJS += ../src/ap/dhcp_snoop.o
endif

91
src/ap/x_snoop.c Normal file
View File

@ -0,0 +1,91 @@
/*
* Generic Snooping for Proxy ARP
* Copyright (c) 2014, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "hostapd.h"
#include "ap_drv_ops.h"
#include "x_snoop.h"
int x_snoop_init(struct hostapd_data *hapd)
{
struct hostapd_bss_config *conf = hapd->conf;
if (!conf->isolate) {
wpa_printf(MSG_DEBUG,
"x_snoop: ap_isolate must be enabled for x_snoop");
return -1;
}
if (conf->bridge[0] == '\0') {
wpa_printf(MSG_DEBUG,
"x_snoop: Bridge must be configured for x_snoop");
return -1;
}
if (hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_HAIRPIN_MODE,
1)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to enable hairpin_mode on the bridge port");
return -1;
}
if (hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_PROXYARP, 1)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to enable proxyarp on the bridge port");
return -1;
}
if (hostapd_drv_br_set_net_param(hapd, DRV_BR_NET_PARAM_GARP_ACCEPT,
1)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to enable accepting gratuitous ARP on the bridge");
return -1;
}
return 0;
}
struct l2_packet_data *
x_snoop_get_l2_packet(struct hostapd_data *hapd,
void (*handler)(void *ctx, const u8 *src_addr,
const u8 *buf, size_t len),
enum l2_packet_filter_type type)
{
struct hostapd_bss_config *conf = hapd->conf;
struct l2_packet_data *l2;
l2 = l2_packet_init(conf->bridge, NULL, ETH_P_ALL, handler, hapd, 1);
if (l2 == NULL) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to initialize L2 packet processing %s",
strerror(errno));
return NULL;
}
if (l2_packet_set_packet_filter(l2, type)) {
wpa_printf(MSG_DEBUG,
"x_snoop: Failed to set L2 packet filter for type: %d",
type);
l2_packet_deinit(l2);
return NULL;
}
return l2;
}
void x_snoop_deinit(struct hostapd_data *hapd)
{
hostapd_drv_br_set_net_param(hapd, DRV_BR_NET_PARAM_GARP_ACCEPT, 0);
hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_PROXYARP, 0);
hostapd_drv_br_port_set_attr(hapd, DRV_BR_PORT_ATTR_HAIRPIN_MODE, 0);
}

46
src/ap/x_snoop.h Normal file
View File

@ -0,0 +1,46 @@
/*
* Generic Snooping for Proxy ARP
* Copyright (c) 2014, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef X_SNOOP_H
#define X_SNOOP_H
#include "l2_packet/l2_packet.h"
#ifdef CONFIG_PROXYARP
int x_snoop_init(struct hostapd_data *hapd);
struct l2_packet_data *
x_snoop_get_l2_packet(struct hostapd_data *hapd,
void (*handler)(void *ctx, const u8 *src_addr,
const u8 *buf, size_t len),
enum l2_packet_filter_type type);
void x_snoop_deinit(struct hostapd_data *hapd);
#else /* CONFIG_PROXYARP */
static inline int x_snoop_init(struct hostapd_data *hapd)
{
return 0;
}
static inline struct l2_packet_data *
x_snoop_get_l2_packet(struct hostapd_data *hapd,
void (*handler)(void *ctx, const u8 *src_addr,
const u8 *buf, size_t len),
enum l2_packet_filter_type type)
{
return NULL;
}
static inline void x_snoop_deinit(struct hostapd_data *hapd)
{
}
#endif /* CONFIG_PROXYARP */
#endif /* X_SNOOP_H */