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netdev: break out FT associate into common function

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SAE will require some of the same CMD_ASSOCIATE building code that
FT currently uses. This breaks out the common code from FT into
netdev_build_cmd_associate_common.
This commit is contained in:
James Prestwood 2018-08-09 11:13:57 -07:00 committed by Denis Kenzior
parent c629d71427
commit d2d2b59f25
1 changed files with 82 additions and 62 deletions
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144
src/netdev.c
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@ -1738,36 +1738,66 @@ error:
netdev_connect_failed(NULL, netdev);
}
/*
* Build an FT Reassociation Request frame according to 12.5.2 / 12.5.4:
* RSN or non-RSN Over-the-air FT Protocol, and with the IE contents
* according to 12.8.4: FT authentication sequence: contents of third message.
*/
static struct l_genl_msg *netdev_build_cmd_ft_reassociate(struct netdev *netdev,
uint32_t frequency,
const uint8_t *prev_bssid)
static unsigned int ie_rsn_akm_suite_to_nl80211(enum ie_rsn_akm_suite akm)
{
struct l_genl_msg *msg;
struct iovec iov[3];
int iov_elems = 0;
struct handshake_state *hs = netdev_get_handshake(netdev);
switch (akm) {
case IE_RSN_AKM_SUITE_8021X:
return CRYPTO_AKM_8021X;
case IE_RSN_AKM_SUITE_PSK:
return CRYPTO_AKM_PSK;
case IE_RSN_AKM_SUITE_FT_OVER_8021X:
return CRYPTO_AKM_FT_OVER_8021X;
case IE_RSN_AKM_SUITE_FT_USING_PSK:
return CRYPTO_AKM_FT_USING_PSK;
case IE_RSN_AKM_SUITE_8021X_SHA256:
return CRYPTO_AKM_8021X_SHA256;
case IE_RSN_AKM_SUITE_PSK_SHA256:
return CRYPTO_AKM_PSK_SHA256;
case IE_RSN_AKM_SUITE_TDLS:
return CRYPTO_AKM_TDLS;
case IE_RSN_AKM_SUITE_SAE_SHA256:
return CRYPTO_AKM_SAE_SHA256;
case IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256:
return CRYPTO_AKM_FT_OVER_SAE_SHA256;
case IE_RSN_AKM_SUITE_AP_PEER_KEY_SHA256:
return CRYPTO_AKM_AP_PEER_KEY_SHA256;
case IE_RSN_AKM_SUITE_8021X_SUITE_B_SHA256:
return CRYPTO_AKM_8021X_SUITE_B_SHA256;
case IE_RSN_AKM_SUITE_8021X_SUITE_B_SHA384:
return CRYPTO_AKM_8021X_SUITE_B_SHA384;
case IE_RSN_AKM_SUITE_FT_OVER_8021X_SHA384:
return CRYPTO_AKM_FT_OVER_8021X_SHA384;
}
return 0;
}
static struct l_genl_msg *netdev_build_cmd_associate_common(
struct netdev *netdev)
{
struct handshake_state *hs = netdev->handshake;
bool is_rsn = hs->own_ie != NULL;
uint8_t *rsne = NULL;
struct l_genl_msg *msg;
msg = l_genl_msg_new_sized(NL80211_CMD_ASSOCIATE, 600);
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4, &frequency);
l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4,
&netdev->frequency);
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, hs->aa);
l_genl_msg_append_attr(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
prev_bssid);
l_genl_msg_append_attr(msg, NL80211_ATTR_SSID, hs->ssid_len, hs->ssid);
l_genl_msg_append_attr(msg, NL80211_ATTR_SOCKET_OWNER, 0, NULL);
if (netdev->pae_over_nl80211)
l_genl_msg_append_attr(msg,
NL80211_ATTR_CONTROL_PORT_OVER_NL80211,
0, NULL);
if (is_rsn) {
uint32_t nl_cipher;
uint32_t nl_akm;
uint32_t wpa_version;
struct ie_rsn_info rsn_info;
l_genl_msg_append_attr(msg, NL80211_ATTR_CONTROL_PORT, 0, NULL);
if (hs->pairwise_cipher == IE_RSN_CIPHER_SUITE_CCMP)
nl_cipher = CRYPTO_CIPHER_CCMP;
@ -1791,19 +1821,45 @@ static struct l_genl_msg *netdev_build_cmd_ft_reassociate(struct netdev *netdev,
4, &use_mfp);
}
if (hs->akm_suite == IE_RSN_AKM_SUITE_FT_OVER_8021X)
nl_akm = CRYPTO_AKM_FT_OVER_8021X;
else
nl_akm = CRYPTO_AKM_FT_USING_PSK;
l_genl_msg_append_attr(msg, NL80211_ATTR_AKM_SUITES,
nl_akm = ie_rsn_akm_suite_to_nl80211(hs->akm_suite);
if (nl_akm)
l_genl_msg_append_attr(msg, NL80211_ATTR_AKM_SUITES,
4, &nl_akm);
wpa_version = NL80211_WPA_VERSION_2;
if (hs->wpa_ie)
wpa_version = NL80211_WPA_VERSION_1;
else
wpa_version = NL80211_WPA_VERSION_2;
l_genl_msg_append_attr(msg, NL80211_ATTR_WPA_VERSIONS,
4, &wpa_version);
}
l_genl_msg_append_attr(msg, NL80211_ATTR_CONTROL_PORT, 0, NULL);
return msg;
}
/*
* Build an FT Reassociation Request frame according to 12.5.2 / 12.5.4:
* RSN or non-RSN Over-the-air FT Protocol, and with the IE contents
* according to 12.8.4: FT authentication sequence: contents of third message.
*/
static struct l_genl_msg *netdev_build_cmd_ft_reassociate(
struct netdev *netdev)
{
struct l_genl_msg *msg;
struct iovec iov[3];
int iov_elems = 0;
struct handshake_state *hs = netdev_get_handshake(netdev);
bool is_rsn = hs->own_ie != NULL;
uint8_t *rsne = NULL;
msg = netdev_build_cmd_associate_common(netdev);
l_genl_msg_append_attr(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
netdev->prev_bssid);
if (is_rsn) {
struct ie_rsn_info rsn_info;
/*
* Rebuild the RSNE to include the PMKR1Name and append
@ -2111,9 +2167,7 @@ static void netdev_authenticate_event(struct l_genl_msg *msg,
} else if (fte)
goto ft_error;
cmd_associate = netdev_build_cmd_ft_reassociate(netdev,
netdev->frequency,
netdev->prev_bssid);
cmd_associate = netdev_build_cmd_ft_reassociate(netdev);
if (!cmd_associate)
goto ft_error;
@ -2152,40 +2206,6 @@ static void netdev_associate_event(struct l_genl_msg *msg,
l_debug("");
}
static unsigned int ie_rsn_akm_suite_to_nl80211(enum ie_rsn_akm_suite akm)
{
switch (akm) {
case IE_RSN_AKM_SUITE_8021X:
return CRYPTO_AKM_8021X;
case IE_RSN_AKM_SUITE_PSK:
return CRYPTO_AKM_PSK;
case IE_RSN_AKM_SUITE_FT_OVER_8021X:
return CRYPTO_AKM_FT_OVER_8021X;
case IE_RSN_AKM_SUITE_FT_USING_PSK:
return CRYPTO_AKM_FT_USING_PSK;
case IE_RSN_AKM_SUITE_8021X_SHA256:
return CRYPTO_AKM_8021X_SHA256;
case IE_RSN_AKM_SUITE_PSK_SHA256:
return CRYPTO_AKM_PSK_SHA256;
case IE_RSN_AKM_SUITE_TDLS:
return CRYPTO_AKM_TDLS;
case IE_RSN_AKM_SUITE_SAE_SHA256:
return CRYPTO_AKM_SAE_SHA256;
case IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256:
return CRYPTO_AKM_FT_OVER_SAE_SHA256;
case IE_RSN_AKM_SUITE_AP_PEER_KEY_SHA256:
return CRYPTO_AKM_AP_PEER_KEY_SHA256;
case IE_RSN_AKM_SUITE_8021X_SUITE_B_SHA256:
return CRYPTO_AKM_8021X_SUITE_B_SHA256;
case IE_RSN_AKM_SUITE_8021X_SUITE_B_SHA384:
return CRYPTO_AKM_8021X_SUITE_B_SHA384;
case IE_RSN_AKM_SUITE_FT_OVER_8021X_SHA384:
return CRYPTO_AKM_FT_OVER_8021X_SHA384;
}
return 0;
}
static void netdev_cmd_connect_cb(struct l_genl_msg *msg, void *user_data)
{
struct netdev *netdev = user_data;