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netdev: netdev_setting_keys_failed takes an errno

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Instead of sending a reason_code to netdev_setting_keys_failed, make it
take an errno (negative) instead.  Since key setting failures are
entirely a system / software issue, and not a protocol issue, it makes
no sense to use a protocol error code.
This commit is contained in:
Denis Kenzior 2019-02-27 14:22:42 -06:00
parent 8e44760c34
commit 917815e99a
1 changed files with 29 additions and 31 deletions
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60
src/netdev.c
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@ -627,7 +627,9 @@ static void netdev_disconnect_cb(struct l_genl_msg *msg, void *user_data)
{
struct netdev *netdev = user_data;
netdev_connect_failed(netdev, netdev->result, netdev->last_status_code);
/* FIXME: This should be a status code */
netdev_connect_failed(netdev, netdev->result,
MMPDU_REASON_CODE_UNSPECIFIED);
}
static void netdev_free(void *data)
@ -1062,7 +1064,7 @@ static void netdev_connect_ok(struct netdev *netdev)
}
static void netdev_setting_keys_failed(struct netdev_handshake_state *nhs,
uint16_t reason_code)
int err)
{
struct netdev *netdev = nhs->netdev;
struct l_genl_msg *msg;
@ -1090,20 +1092,19 @@ static void netdev_setting_keys_failed(struct netdev_handshake_state *nhs,
}
netdev->result = NETDEV_RESULT_KEY_SETTING_FAILED;
netdev->last_status_code = reason_code;
handshake_event(&nhs->super, HANDSHAKE_EVENT_SETTING_KEYS_FAILED, NULL);
handshake_event(&nhs->super, HANDSHAKE_EVENT_SETTING_KEYS_FAILED, &err);
switch (netdev->type) {
case NL80211_IFTYPE_STATION:
msg = netdev_build_cmd_disconnect(netdev, reason_code);
msg = netdev_build_cmd_disconnect(netdev,
MMPDU_REASON_CODE_UNSPECIFIED);
netdev->disconnect_cmd_id = l_genl_family_send(nl80211, msg,
netdev_disconnect_cb,
netdev, NULL);
break;
case NL80211_IFTYPE_AP:
msg = netdev_build_cmd_del_station(netdev, nhs->super.spa,
reason_code, false);
MMPDU_REASON_CODE_UNSPECIFIED, false);
if (!l_genl_family_send(nl80211, msg, NULL, NULL, NULL))
l_error("error sending DEL_STATION");
}
@ -1138,8 +1139,7 @@ static void netdev_set_station_cb(struct l_genl_msg *msg, void *user_data)
if (err < 0) {
l_error("Set Station failed for ifindex %d", netdev->index);
netdev_setting_keys_failed(nhs,
MMPDU_REASON_CODE_UNSPECIFIED);
netdev_setting_keys_failed(nhs, err);
return;
}
@ -1151,18 +1151,18 @@ static void netdev_new_group_key_cb(struct l_genl_msg *msg, void *data)
{
struct netdev_handshake_state *nhs = data;
struct netdev *netdev = nhs->netdev;
int err = l_genl_msg_get_error(msg);
nhs->group_new_key_cmd_id = 0;
if (l_genl_msg_get_error(msg) < 0) {
if (err < 0) {
l_error("New Key for Group Key failed for ifindex: %d",
netdev->index);
netdev_setting_keys_failed(nhs, MMPDU_REASON_CODE_UNSPECIFIED);
netdev_setting_keys_failed(nhs, err);
return;
}
nhs->gtk_installed = true;
try_handshake_complete(nhs);
}
@ -1171,18 +1171,18 @@ static void netdev_new_group_management_key_cb(struct l_genl_msg *msg,
{
struct netdev_handshake_state *nhs = data;
struct netdev *netdev = nhs->netdev;
int err = l_genl_msg_get_error(msg);
nhs->group_management_new_key_cmd_id = 0;
if (l_genl_msg_get_error(msg) < 0) {
if (err < 0) {
l_error("New Key for Group Mgmt failed for ifindex: %d",
netdev->index);
netdev_setting_keys_failed(nhs, MMPDU_REASON_CODE_UNSPECIFIED);
netdev_setting_keys_failed(nhs, err);
return;
}
nhs->igtk_installed = true;
try_handshake_complete(nhs);
}
@ -1261,14 +1261,12 @@ static void netdev_set_gtk(struct handshake_state *hs, uint8_t key_index,
if (crypto_cipher_key_len(cipher) != gtk_len) {
l_error("Unexpected key length: %d", gtk_len);
netdev_setting_keys_failed(nhs,
MMPDU_REASON_CODE_INVALID_GROUP_CIPHER);
netdev_setting_keys_failed(nhs, -ERANGE);
return;
}
if (!netdev_copy_tk(gtk_buf, gtk, cipher, false)) {
netdev_setting_keys_failed(nhs,
MMPDU_REASON_CODE_INVALID_GROUP_CIPHER);
netdev_setting_keys_failed(nhs, -ENOENT);
return;
}
@ -1288,7 +1286,7 @@ static void netdev_set_gtk(struct handshake_state *hs, uint8_t key_index,
return;
l_genl_msg_unref(msg);
netdev_setting_keys_failed(nhs, MMPDU_REASON_CODE_UNSPECIFIED);
netdev_setting_keys_failed(nhs, -EIO);
}
static void netdev_set_igtk(struct handshake_state *hs, uint8_t key_index,
@ -1308,8 +1306,7 @@ static void netdev_set_igtk(struct handshake_state *hs, uint8_t key_index,
if (crypto_cipher_key_len(cipher) != igtk_len) {
l_error("Unexpected key length: %d", igtk_len);
netdev_setting_keys_failed(nhs,
MMPDU_REASON_CODE_INVALID_GROUP_CIPHER);
netdev_setting_keys_failed(nhs, -ERANGE);
return;
}
@ -1319,8 +1316,7 @@ static void netdev_set_igtk(struct handshake_state *hs, uint8_t key_index,
break;
default:
l_error("Unexpected cipher: %x", cipher);
netdev_setting_keys_failed(nhs,
MMPDU_REASON_CODE_INVALID_GROUP_CIPHER);
netdev_setting_keys_failed(nhs, -ENOENT);
return;
}
@ -1336,7 +1332,7 @@ static void netdev_set_igtk(struct handshake_state *hs, uint8_t key_index,
return;
l_genl_msg_unref(msg);
netdev_setting_keys_failed(nhs, MMPDU_REASON_CODE_UNSPECIFIED);
netdev_setting_keys_failed(nhs, -EIO);
}
static void netdev_new_pairwise_key_cb(struct l_genl_msg *msg, void *data)
@ -1344,10 +1340,11 @@ static void netdev_new_pairwise_key_cb(struct l_genl_msg *msg, void *data)
struct netdev_handshake_state *nhs = data;
struct netdev *netdev = nhs->netdev;
const uint8_t *addr = netdev_choose_key_address(nhs);
int err = l_genl_msg_get_error(msg);
nhs->pairwise_new_key_cmd_id = 0;
if (l_genl_msg_get_error(msg) < 0) {
if (err < 0) {
l_error("New Key for Pairwise Key failed for ifindex: %d",
netdev->index);
goto error;
@ -1367,8 +1364,9 @@ static void netdev_new_pairwise_key_cb(struct l_genl_msg *msg, void *data)
return;
l_genl_msg_unref(msg);
err = -EIO;
error:
netdev_setting_keys_failed(nhs, MMPDU_REASON_CODE_UNSPECIFIED);
netdev_setting_keys_failed(nhs, err);
}
static struct l_genl_msg *netdev_build_cmd_new_key_pairwise(
@ -1424,8 +1422,8 @@ static void netdev_set_tk(struct handshake_state *hs,
uint8_t tk_buf[32];
struct netdev *netdev = nhs->netdev;
struct l_genl_msg *msg;
enum mmpdu_reason_code rc;
const uint8_t *addr = netdev_choose_key_address(nhs);
int err;
/*
* WPA1 does the group handshake after the 4-way finishes so we can't
@ -1459,11 +1457,10 @@ static void netdev_set_tk(struct handshake_state *hs,
l_debug("%d", netdev->index);
rc = MMPDU_REASON_CODE_INVALID_PAIRWISE_CIPHER;
err = -ENOENT;
if (!netdev_copy_tk(tk_buf, tk, cipher, false))
goto invalid_key;
rc = MMPDU_REASON_CODE_UNSPECIFIED;
msg = netdev_build_cmd_new_key_pairwise(netdev, cipher, addr, tk_buf,
crypto_cipher_key_len(cipher));
nhs->pairwise_new_key_cmd_id =
@ -1472,9 +1469,10 @@ static void netdev_set_tk(struct handshake_state *hs,
if (nhs->pairwise_new_key_cmd_id > 0)
return;
err = -EIO;
l_genl_msg_unref(msg);
invalid_key:
netdev_setting_keys_failed(nhs, rc);
netdev_setting_keys_failed(nhs, err);
}
void netdev_handshake_failed(struct handshake_state *hs, uint16_t reason_code)