mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-12-22 21:22:37 +01:00
station: Move handshake setup code from device
For now we temporarily create the station object from within device so that the code can be moved over in a more manageable manner.
This commit is contained in:
parent
641e71a02f
commit
e6060c1026
233
src/device.c
233
src/device.c
@ -46,6 +46,7 @@
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#include "src/watchlist.h"
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#include "src/ap.h"
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#include "src/adhoc.h"
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#include "src/station.h"
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struct autoconnect_entry {
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uint16_t rank;
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@ -75,6 +76,7 @@ struct device {
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struct wiphy *wiphy;
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struct netdev *netdev;
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struct station *station;
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bool scanning : 1;
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bool autoconnect : 1;
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@ -513,6 +515,7 @@ static void device_enter_state(struct device *device, enum device_state state)
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static void device_reset_connection_state(struct device *device)
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{
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struct station *station = device->station;
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struct network *network = device->connected_network;
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struct l_dbus *dbus = dbus_get_bus();
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@ -535,6 +538,7 @@ static void device_reset_connection_state(struct device *device)
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device->connected_bss = NULL;
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device->connected_network = NULL;
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station->connected_network = NULL;
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l_dbus_property_changed(dbus, device_get_path(device),
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IWD_DEVICE_INTERFACE, "ConnectedNetwork");
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@ -570,209 +574,6 @@ static void device_disconnect_event(struct device *device)
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device_disassociated(device);
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}
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static enum ie_rsn_akm_suite device_select_akm_suite(struct network *network,
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struct scan_bss *bss,
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struct ie_rsn_info *info)
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{
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enum security security = network_get_security(network);
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/*
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* If FT is available, use FT authentication to keep the door open
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* for fast transitions. Otherwise use SHA256 version if present.
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*/
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if (security == SECURITY_8021X) {
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if ((info->akm_suites & IE_RSN_AKM_SUITE_FT_OVER_8021X) &&
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bss->rsne && bss->mde_present)
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return IE_RSN_AKM_SUITE_FT_OVER_8021X;
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if (info->akm_suites & IE_RSN_AKM_SUITE_8021X_SHA256)
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return IE_RSN_AKM_SUITE_8021X_SHA256;
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if (info->akm_suites & IE_RSN_AKM_SUITE_8021X)
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return IE_RSN_AKM_SUITE_8021X;
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} else if (security == SECURITY_PSK) {
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if (info->akm_suites & IE_RSN_AKM_SUITE_SAE_SHA256)
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return IE_RSN_AKM_SUITE_SAE_SHA256;
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if ((info->akm_suites & IE_RSN_AKM_SUITE_FT_USING_PSK) &&
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bss->rsne && bss->mde_present)
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return IE_RSN_AKM_SUITE_FT_USING_PSK;
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if (info->akm_suites & IE_RSN_AKM_SUITE_PSK_SHA256)
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return IE_RSN_AKM_SUITE_PSK_SHA256;
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if (info->akm_suites & IE_RSN_AKM_SUITE_PSK)
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return IE_RSN_AKM_SUITE_PSK;
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}
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return 0;
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}
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static void device_handshake_event(struct handshake_state *hs,
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enum handshake_event event,
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void *event_data, void *user_data)
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{
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struct device *device = user_data;
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struct network *network = device->connected_network;
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switch (event) {
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case HANDSHAKE_EVENT_STARTED:
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l_debug("Handshaking");
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break;
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case HANDSHAKE_EVENT_SETTING_KEYS:
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l_debug("Setting keys");
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/* If we got here, then our PSK works. Save if required */
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network_sync_psk(network);
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break;
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case HANDSHAKE_EVENT_FAILED:
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netdev_handshake_failed(hs, l_get_u16(event_data));
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break;
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case HANDSHAKE_EVENT_SETTING_KEYS_FAILED:
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case HANDSHAKE_EVENT_COMPLETE:
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/*
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* currently we dont care about any other events. The
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* netdev_connect_cb will notify us when the connection is
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* complete.
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*/
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break;
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}
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}
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static struct handshake_state *device_handshake_setup(struct device *device,
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struct network *network,
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struct scan_bss *bss)
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{
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enum security security = network_get_security(network);
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struct wiphy *wiphy = device->wiphy;
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struct handshake_state *hs;
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bool add_mde = false;
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hs = netdev_handshake_state_new(device->netdev);
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handshake_state_set_event_func(hs, device_handshake_event, device);
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if (security == SECURITY_PSK || security == SECURITY_8021X) {
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const struct l_settings *settings = iwd_get_config();
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struct ie_rsn_info bss_info;
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uint8_t rsne_buf[256];
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struct ie_rsn_info info;
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const char *ssid;
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uint32_t mfp_setting;
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memset(&info, 0, sizeof(info));
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memset(&bss_info, 0, sizeof(bss_info));
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scan_bss_get_rsn_info(bss, &bss_info);
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info.akm_suites = device_select_akm_suite(network, bss,
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&bss_info);
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if (!info.akm_suites)
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goto not_supported;
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info.pairwise_ciphers = wiphy_select_cipher(wiphy,
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bss_info.pairwise_ciphers);
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info.group_cipher = wiphy_select_cipher(wiphy,
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bss_info.group_cipher);
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if (!info.pairwise_ciphers || !info.group_cipher)
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goto not_supported;
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if (!l_settings_get_uint(settings, "General",
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"ManagementFrameProtection", &mfp_setting))
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mfp_setting = 1;
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if (mfp_setting > 2) {
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l_error("Invalid MFP value, using default of 1");
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mfp_setting = 1;
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}
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switch (mfp_setting) {
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case 0:
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break;
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case 1:
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info.group_management_cipher =
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wiphy_select_cipher(wiphy,
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bss_info.group_management_cipher);
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info.mfpc = info.group_management_cipher != 0;
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break;
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case 2:
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info.group_management_cipher =
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wiphy_select_cipher(wiphy,
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bss_info.group_management_cipher);
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/*
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* MFP required on our side, but AP doesn't support MFP
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* or cipher mismatch
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*/
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if (info.group_management_cipher == 0)
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goto not_supported;
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info.mfpc = true;
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info.mfpr = true;
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break;
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}
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if (bss_info.mfpr && !info.mfpc)
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goto not_supported;
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ssid = network_get_ssid(network);
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handshake_state_set_ssid(hs, (void *) ssid, strlen(ssid));
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/* RSN takes priority */
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if (bss->rsne) {
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ie_build_rsne(&info, rsne_buf);
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handshake_state_set_authenticator_rsn(hs, bss->rsne);
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handshake_state_set_supplicant_rsn(hs, rsne_buf);
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} else {
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ie_build_wpa(&info, rsne_buf);
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handshake_state_set_authenticator_wpa(hs, bss->wpa);
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handshake_state_set_supplicant_wpa(hs, rsne_buf);
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}
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if (security == SECURITY_PSK) {
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/* SAE will generate/set the PMK */
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if (info.akm_suites == IE_RSN_AKM_SUITE_SAE_SHA256)
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handshake_state_set_passphrase(hs,
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network_get_passphrase(network));
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else
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handshake_state_set_pmk(hs,
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network_get_psk(network), 32);
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} else
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handshake_state_set_8021x_config(hs,
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network_get_settings(network));
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if (info.akm_suites & (IE_RSN_AKM_SUITE_FT_OVER_8021X |
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IE_RSN_AKM_SUITE_FT_USING_PSK |
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IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256))
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add_mde = true;
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}
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if (security == SECURITY_NONE)
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/* Perform FT association if available */
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add_mde = bss->mde_present;
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if (add_mde) {
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uint8_t mde[5];
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/* The MDE advertised by the BSS must be passed verbatim */
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mde[0] = IE_TYPE_MOBILITY_DOMAIN;
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mde[1] = 3;
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memcpy(mde + 2, bss->mde, 3);
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handshake_state_set_mde(hs, mde);
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}
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return hs;
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not_supported:
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handshake_state_free(hs);
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return NULL;
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}
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static void device_roam_failed(struct device *device)
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{
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/*
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@ -876,6 +677,8 @@ static void device_preauthenticate_cb(struct netdev *netdev,
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const uint8_t *pmk, void *user_data)
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{
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struct device *device = user_data;
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struct station *station = device->station;
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struct network *connected = device_get_connected_network(device);
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struct scan_bss *bss;
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struct handshake_state *new_hs;
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@ -893,7 +696,7 @@ static void device_preauthenticate_cb(struct netdev *netdev,
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return;
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}
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new_hs = device_handshake_setup(device, device->connected_network, bss);
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new_hs = station_handshake_setup(station, connected, bss);
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if (!new_hs) {
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l_error("device_handshake_setup failed");
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@ -938,11 +741,12 @@ static void device_preauthenticate_cb(struct netdev *netdev,
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static void device_transition_start(struct device *device, struct scan_bss *bss)
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{
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struct handshake_state *hs = netdev_get_handshake(device->netdev);
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struct network *connected = device_get_connected_network(device);
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enum security security = network_get_security(connected);
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struct station *station = device->station;
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uint16_t mdid;
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struct handshake_state *new_hs;
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struct ie_rsn_info cur_rsne, target_rsne;
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enum security security =
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network_get_security(device->connected_network);
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l_debug("%d, target %s", device->index,
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util_address_to_string(bss->addr));
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@ -1011,7 +815,7 @@ static void device_transition_start(struct device *device, struct scan_bss *bss)
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return;
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}
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new_hs = device_handshake_setup(device, device->connected_network, bss);
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new_hs = station_handshake_setup(station, connected, bss);
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if (!new_hs) {
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l_error("device_handshake_setup failed in reassociation");
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@ -1655,13 +1459,14 @@ int __device_connect_network(struct device *device, struct network *network,
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struct scan_bss *bss)
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{
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struct l_dbus *dbus = dbus_get_bus();
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struct station *station = device->station;
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struct handshake_state *hs;
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int r;
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if (device_is_busy(device))
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return -EBUSY;
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hs = device_handshake_setup(device, network, bss);
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hs = station_handshake_setup(station, network, bss);
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if (!hs)
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return -ENOTSUP;
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@ -1674,6 +1479,7 @@ int __device_connect_network(struct device *device, struct network *network,
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device->connected_bss = bss;
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device->connected_network = network;
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station->connected_network = network;
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device_enter_state(device, DEVICE_STATE_CONNECTING);
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@ -2538,12 +2344,19 @@ static void device_netdev_notify(struct netdev *netdev,
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if (netdev_get_iftype(device->netdev) != NETDEV_IFTYPE_STATION)
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return;
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device->station = station_create(device->wiphy, device->netdev);
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if (device->autoconnect)
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device_enter_state(device, DEVICE_STATE_AUTOCONNECT);
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else
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device_enter_state(device, DEVICE_STATE_DISCONNECTED);
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break;
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case NETDEV_WATCH_EVENT_DOWN:
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if (device->station) {
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station_free(device->station);
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device->station = NULL;
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}
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device_enter_state(device, DEVICE_STATE_OFF);
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if (device->scan_pending)
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@ -2625,8 +2438,10 @@ struct device *device_create(struct wiphy *wiphy, struct netdev *netdev)
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device_ap_roam_frame_event, device);
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if (netdev_get_is_up(netdev) &&
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netdev_get_iftype(netdev) == NETDEV_IFTYPE_STATION)
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netdev_get_iftype(netdev) == NETDEV_IFTYPE_STATION) {
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device->station = station_create(device->wiphy, device->netdev);
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device_enter_state(device, DEVICE_STATE_AUTOCONNECT);
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}
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return device;
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}
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src/station.c
205
src/station.c
@ -33,11 +33,216 @@
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#include "src/common.h"
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#include "src/scan.h"
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#include "src/netdev.h"
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#include "src/wiphy.h"
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#include "src/network.h"
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#include "src/ie.h"
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#include "src/handshake.h"
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#include "src/station.h"
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static struct l_queue *station_list;
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static enum ie_rsn_akm_suite select_akm_suite(struct network *network,
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struct scan_bss *bss,
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struct ie_rsn_info *info)
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{
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enum security security = network_get_security(network);
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/*
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* If FT is available, use FT authentication to keep the door open
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* for fast transitions. Otherwise use SHA256 version if present.
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*/
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if (security == SECURITY_8021X) {
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if ((info->akm_suites & IE_RSN_AKM_SUITE_FT_OVER_8021X) &&
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bss->rsne && bss->mde_present)
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return IE_RSN_AKM_SUITE_FT_OVER_8021X;
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if (info->akm_suites & IE_RSN_AKM_SUITE_8021X_SHA256)
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return IE_RSN_AKM_SUITE_8021X_SHA256;
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if (info->akm_suites & IE_RSN_AKM_SUITE_8021X)
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return IE_RSN_AKM_SUITE_8021X;
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} else if (security == SECURITY_PSK) {
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if (info->akm_suites & IE_RSN_AKM_SUITE_SAE_SHA256)
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return IE_RSN_AKM_SUITE_SAE_SHA256;
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if ((info->akm_suites & IE_RSN_AKM_SUITE_FT_USING_PSK) &&
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bss->rsne && bss->mde_present)
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return IE_RSN_AKM_SUITE_FT_USING_PSK;
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if (info->akm_suites & IE_RSN_AKM_SUITE_PSK_SHA256)
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return IE_RSN_AKM_SUITE_PSK_SHA256;
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if (info->akm_suites & IE_RSN_AKM_SUITE_PSK)
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return IE_RSN_AKM_SUITE_PSK;
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}
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return 0;
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}
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static void station_handshake_event(struct handshake_state *hs,
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enum handshake_event event,
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void *event_data, void *user_data)
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{
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struct station *station = user_data;
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struct network *network = station->connected_network;
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switch (event) {
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case HANDSHAKE_EVENT_STARTED:
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l_debug("Handshaking");
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break;
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case HANDSHAKE_EVENT_SETTING_KEYS:
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l_debug("Setting keys");
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/* If we got here, then our PSK works. Save if required */
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network_sync_psk(network);
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break;
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case HANDSHAKE_EVENT_FAILED:
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netdev_handshake_failed(hs, l_get_u16(event_data));
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break;
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case HANDSHAKE_EVENT_SETTING_KEYS_FAILED:
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case HANDSHAKE_EVENT_COMPLETE:
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/*
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* currently we dont care about any other events. The
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* netdev_connect_cb will notify us when the connection is
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* complete.
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*/
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break;
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}
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}
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struct handshake_state *station_handshake_setup(struct station *station,
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struct network *network,
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struct scan_bss *bss)
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{
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enum security security = network_get_security(network);
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struct wiphy *wiphy = station->wiphy;
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struct handshake_state *hs;
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bool add_mde = false;
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hs = netdev_handshake_state_new(station->netdev);
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handshake_state_set_event_func(hs, station_handshake_event, station);
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if (security == SECURITY_PSK || security == SECURITY_8021X) {
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const struct l_settings *settings = iwd_get_config();
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struct ie_rsn_info bss_info;
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uint8_t rsne_buf[256];
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struct ie_rsn_info info;
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const char *ssid;
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uint32_t mfp_setting;
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memset(&info, 0, sizeof(info));
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memset(&bss_info, 0, sizeof(bss_info));
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scan_bss_get_rsn_info(bss, &bss_info);
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|
||||
info.akm_suites = select_akm_suite(network, bss, &bss_info);
|
||||
|
||||
if (!info.akm_suites)
|
||||
goto not_supported;
|
||||
|
||||
info.pairwise_ciphers = wiphy_select_cipher(wiphy,
|
||||
bss_info.pairwise_ciphers);
|
||||
info.group_cipher = wiphy_select_cipher(wiphy,
|
||||
bss_info.group_cipher);
|
||||
|
||||
if (!info.pairwise_ciphers || !info.group_cipher)
|
||||
goto not_supported;
|
||||
|
||||
if (!l_settings_get_uint(settings, "General",
|
||||
"ManagementFrameProtection", &mfp_setting))
|
||||
mfp_setting = 1;
|
||||
|
||||
if (mfp_setting > 2) {
|
||||
l_error("Invalid MFP value, using default of 1");
|
||||
mfp_setting = 1;
|
||||
}
|
||||
|
||||
switch (mfp_setting) {
|
||||
case 0:
|
||||
break;
|
||||
case 1:
|
||||
info.group_management_cipher =
|
||||
wiphy_select_cipher(wiphy,
|
||||
bss_info.group_management_cipher);
|
||||
info.mfpc = info.group_management_cipher != 0;
|
||||
break;
|
||||
case 2:
|
||||
info.group_management_cipher =
|
||||
wiphy_select_cipher(wiphy,
|
||||
bss_info.group_management_cipher);
|
||||
|
||||
/*
|
||||
* MFP required on our side, but AP doesn't support MFP
|
||||
* or cipher mismatch
|
||||
*/
|
||||
if (info.group_management_cipher == 0)
|
||||
goto not_supported;
|
||||
|
||||
info.mfpc = true;
|
||||
info.mfpr = true;
|
||||
break;
|
||||
}
|
||||
|
||||
if (bss_info.mfpr && !info.mfpc)
|
||||
goto not_supported;
|
||||
|
||||
ssid = network_get_ssid(network);
|
||||
handshake_state_set_ssid(hs, (void *) ssid, strlen(ssid));
|
||||
|
||||
/* RSN takes priority */
|
||||
if (bss->rsne) {
|
||||
ie_build_rsne(&info, rsne_buf);
|
||||
handshake_state_set_authenticator_rsn(hs, bss->rsne);
|
||||
handshake_state_set_supplicant_rsn(hs, rsne_buf);
|
||||
} else {
|
||||
ie_build_wpa(&info, rsne_buf);
|
||||
handshake_state_set_authenticator_wpa(hs, bss->wpa);
|
||||
handshake_state_set_supplicant_wpa(hs, rsne_buf);
|
||||
}
|
||||
|
||||
if (security == SECURITY_PSK) {
|
||||
/* SAE will generate/set the PMK */
|
||||
if (info.akm_suites == IE_RSN_AKM_SUITE_SAE_SHA256)
|
||||
handshake_state_set_passphrase(hs,
|
||||
network_get_passphrase(network));
|
||||
else
|
||||
handshake_state_set_pmk(hs,
|
||||
network_get_psk(network), 32);
|
||||
} else
|
||||
handshake_state_set_8021x_config(hs,
|
||||
network_get_settings(network));
|
||||
|
||||
if (info.akm_suites & (IE_RSN_AKM_SUITE_FT_OVER_8021X |
|
||||
IE_RSN_AKM_SUITE_FT_USING_PSK |
|
||||
IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256))
|
||||
add_mde = true;
|
||||
}
|
||||
|
||||
if (security == SECURITY_NONE)
|
||||
/* Perform FT association if available */
|
||||
add_mde = bss->mde_present;
|
||||
|
||||
if (add_mde) {
|
||||
uint8_t mde[5];
|
||||
|
||||
/* The MDE advertised by the BSS must be passed verbatim */
|
||||
mde[0] = IE_TYPE_MOBILITY_DOMAIN;
|
||||
mde[1] = 3;
|
||||
memcpy(mde + 2, bss->mde, 3);
|
||||
|
||||
handshake_state_set_mde(hs, mde);
|
||||
}
|
||||
|
||||
return hs;
|
||||
|
||||
not_supported:
|
||||
handshake_state_free(hs);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct station *station_create(struct wiphy *wiphy, struct netdev *netdev)
|
||||
{
|
||||
struct station *station;
|
||||
|
@ -24,11 +24,20 @@
|
||||
|
||||
struct wiphy;
|
||||
struct netdev;
|
||||
enum security;
|
||||
struct scan_bss;
|
||||
struct network;
|
||||
|
||||
struct station {
|
||||
struct network *connected_network;
|
||||
|
||||
struct wiphy *wiphy;
|
||||
struct netdev *netdev;
|
||||
};
|
||||
|
||||
struct handshake_state *station_handshake_setup(struct station *station,
|
||||
struct network *network,
|
||||
struct scan_bss *bss);
|
||||
|
||||
struct station *station_create(struct wiphy *wiphy, struct netdev *netdev);
|
||||
void station_free(struct station *station);
|
||||
|
Loading…
Reference in New Issue
Block a user