3569267283
Complete the IEEE802.11 Station Association with interation of AC in LocalMAC mode. After the IEEE802.11 Authorization / Association is complete, the AC can now authorize the WTP to accept data station packets with Station Configuration Message.
332 lines
13 KiB
C
332 lines
13 KiB
C
#include "ac.h"
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#include "ac_session.h"
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#include "ac_wlans.h"
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/* */
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static void ac_ieee80211_mgmt_probe_request_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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/* Accept probe request only if not sent by WTP */
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if (!memcmp(mgmt->bssid, mgmt->sa, MACADDRESS_EUI48_LENGTH)) {
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return;
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}
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->proberequest));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->proberequest.ie[0], ielength)) {
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return;
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}
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/* TODO */
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}
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/* */
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static void ac_ieee80211_mgmt_authentication_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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struct ac_station* station;
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char buffer[CAPWAP_MACADDRESS_EUI48_BUFFER];
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->authetication));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->authetication.ie[0], ielength)) {
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return;
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}
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/* */
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if (memcmp(mgmt->bssid, mgmt->sa, MACADDRESS_EUI48_LENGTH) && !memcmp(mgmt->bssid, mgmt->da, MACADDRESS_EUI48_LENGTH)) {
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station = ac_stations_create_station(sessiondata, radioid, mgmt->bssid, mgmt->sa);
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/* */
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capwap_printf_macaddress(buffer, station->address, MACADDRESS_EUI48_LENGTH);
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capwap_logging_info("Receive IEEE802.11 Authentication Request from %s station", buffer);
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/* */
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if (station->wlan->macmode == CAPWAP_ADD_WLAN_MACMODE_LOCAL) {
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/* TODO */
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} else if (station->wlan->macmode == CAPWAP_ADD_WLAN_MACMODE_SPLIT) {
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/* TODO */
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}
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} else if (!memcmp(mgmt->bssid, mgmt->sa, MACADDRESS_EUI48_LENGTH) && memcmp(mgmt->bssid, mgmt->da, MACADDRESS_EUI48_LENGTH)) {
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station = ac_stations_get_station(sessiondata, radioid, mgmt->bssid, mgmt->da);
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if (station && (station->wlan->macmode == CAPWAP_ADD_WLAN_MACMODE_LOCAL)) {
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uint16_t algorithm;
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uint16_t transactionseqnumber;
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uint16_t statuscode;
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/* */
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statuscode = __le16_to_cpu(mgmt->authetication.statuscode);
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/* */
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capwap_printf_macaddress(buffer, station->address, MACADDRESS_EUI48_LENGTH);
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capwap_logging_info("Receive IEEE802.11 Authentication Response to %s station with %d status code", buffer, (int)statuscode);
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if (statuscode == IEEE80211_STATUS_SUCCESS) {
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algorithm = __le16_to_cpu(mgmt->authetication.algorithm);
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transactionseqnumber = __le16_to_cpu(mgmt->authetication.transactionseqnumber);
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/* Check if authenticate */
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if ((algorithm == IEEE80211_AUTHENTICATION_ALGORITHM_OPEN) && (transactionseqnumber == 2)) {
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station->flags |= AC_STATION_FLAGS_AUTHENTICATED;
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} else if ((algorithm == IEEE80211_AUTHENTICATION_ALGORITHM_SHARED_KEY) && (transactionseqnumber == 4)) {
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/* TODO */
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}
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}
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}
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}
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}
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/* */
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static void ac_ieee80211_mgmt_association_request_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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struct ac_station* station;
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char buffer[CAPWAP_MACADDRESS_EUI48_BUFFER];
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->associationrequest));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->associationrequest.ie[0], ielength)) {
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return;
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}
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/* Get station */
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if (memcmp(mgmt->bssid, mgmt->sa, MACADDRESS_EUI48_LENGTH) && !memcmp(mgmt->bssid, mgmt->da, MACADDRESS_EUI48_LENGTH)) {
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station = ac_stations_get_station(sessiondata, radioid, mgmt->bssid, mgmt->sa);
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/* */
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capwap_printf_macaddress(buffer, station->address, MACADDRESS_EUI48_LENGTH);
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capwap_logging_info("Receive IEEE802.11 Association Request from %s station", buffer);
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/* Get Station Info */
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station->capability = __le16_to_cpu(mgmt->associationrequest.capability);
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station->listeninterval = __le16_to_cpu(mgmt->associationrequest.listeninterval);
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/* Get supported rates */
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if (ieitems.supported_rates && ((ieitems.supported_rates->len + (ieitems.extended_supported_rates ? ieitems.extended_supported_rates->len : 0)) <= sizeof(station->supportedrates))) {
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station->supportedratescount = ieitems.supported_rates->len;
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memcpy(station->supportedrates, ieitems.supported_rates->rates, ieitems.supported_rates->len);
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if (ieitems.extended_supported_rates) {
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station->supportedratescount += ieitems.extended_supported_rates->len;
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memcpy(&station->supportedrates[ieitems.supported_rates->len], ieitems.extended_supported_rates->rates, ieitems.extended_supported_rates->len);
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}
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/* */
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if (station->wlan->macmode == CAPWAP_ADD_WLAN_MACMODE_LOCAL) {
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/* TODO */
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} else if (station->wlan->macmode == CAPWAP_ADD_WLAN_MACMODE_SPLIT) {
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/* TODO */
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/* Active Station */
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ac_stations_authorize_station(sessiondata, station);
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}
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}
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}
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}
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/* */
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static void ac_ieee80211_mgmt_association_response_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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struct ac_station* station;
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char buffer[CAPWAP_MACADDRESS_EUI48_BUFFER];
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->associationresponse));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->associationresponse.ie[0], ielength)) {
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return;
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}
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/* Get station */
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if (!memcmp(mgmt->bssid, mgmt->sa, MACADDRESS_EUI48_LENGTH) && memcmp(mgmt->bssid, mgmt->da, MACADDRESS_EUI48_LENGTH)) {
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station = ac_stations_get_station(sessiondata, radioid, mgmt->bssid, mgmt->da);
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if (station && (station->wlan->macmode == CAPWAP_ADD_WLAN_MACMODE_LOCAL)) {
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capwap_printf_macaddress(buffer, station->address, MACADDRESS_EUI48_LENGTH);
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capwap_logging_info("Receive IEEE802.11 Association Response to %s station with %d status code", buffer, (int)mgmt->associationresponse.statuscode);
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if (mgmt->associationresponse.statuscode == IEEE80211_STATUS_SUCCESS) {
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/* Get Station Info */
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station->capability = __le16_to_cpu(mgmt->associationresponse.capability);
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station->aid = __le16_to_cpu(mgmt->associationresponse.aid);
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station->flags |= AC_STATION_FLAGS_ASSOCIATE;
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/* Get supported rates */
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if (ieitems.supported_rates && ((ieitems.supported_rates->len + (ieitems.extended_supported_rates ? ieitems.extended_supported_rates->len : 0)) <= sizeof(station->supportedrates))) {
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station->supportedratescount = ieitems.supported_rates->len;
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memcpy(station->supportedrates, ieitems.supported_rates->rates, ieitems.supported_rates->len);
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if (ieitems.extended_supported_rates) {
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station->supportedratescount += ieitems.extended_supported_rates->len;
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memcpy(&station->supportedrates[ieitems.supported_rates->len], ieitems.extended_supported_rates->rates, ieitems.extended_supported_rates->len);
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}
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/* Active Station */
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ac_stations_authorize_station(sessiondata, station);
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}
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}
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}
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}
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}
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/* */
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static void ac_ieee80211_mgmt_reassociation_request_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->reassociationrequest));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->reassociationrequest.ie[0], ielength)) {
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return;
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}
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/* TODO */
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}
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/* */
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static void ac_ieee80211_mgmt_reassociation_response_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->reassociationresponse));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->reassociationresponse.ie[0], ielength)) {
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return;
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}
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/* TODO */
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}
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/* */
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static void ac_ieee80211_mgmt_disassociation_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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struct ieee80211_ie_items ieitems;
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->disassociation));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->disassociation.ie[0], ielength)) {
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return;
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}
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/* TODO */
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}
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/* */
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static void ac_ieee80211_mgmt_deauthentication_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength) {
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int ielength;
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const uint8_t* stationaddress;
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struct ac_station* station;
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struct ieee80211_ie_items ieitems;
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/* Parsing Information Elements */
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ielength = mgmtlength - (sizeof(struct ieee80211_header) + sizeof(mgmt->deauthetication));
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if (ieee80211_retrieve_information_elements_position(&ieitems, &mgmt->deauthetication.ie[0], ielength)) {
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return;
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}
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/* Get station address */
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stationaddress = (memcmp(mgmt->bssid, mgmt->sa, MACADDRESS_EUI48_LENGTH) ? mgmt->sa : mgmt->da);
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/* Delete station */
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station = ac_stations_get_station(sessiondata, radioid, NULL, stationaddress);
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if (station) {
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station->flags &= ~(AC_STATION_FLAGS_AUTHORIZED | AC_STATION_FLAGS_AUTHENTICATED | AC_STATION_FLAGS_ASSOCIATE);
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ac_stations_delete_station(sessiondata, station);
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}
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}
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/* */
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static void ac_ieee80211_mgmt_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const struct ieee80211_header_mgmt* mgmt, int mgmtlength, uint16_t framecontrol_subtype) {
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switch (framecontrol_subtype) {
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_PROBE_REQUEST: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->proberequest))) {
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ac_ieee80211_mgmt_probe_request_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_AUTHENTICATION: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->authetication))) {
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ac_ieee80211_mgmt_authentication_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_ASSOCIATION_REQUEST: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->associationrequest))) {
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ac_ieee80211_mgmt_association_request_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_ASSOCIATION_RESPONSE: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->associationresponse))) {
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ac_ieee80211_mgmt_association_response_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_REASSOCIATION_REQUEST: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->reassociationrequest))) {
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ac_ieee80211_mgmt_reassociation_request_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_REASSOCIATION_RESPONSE: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->reassociationresponse))) {
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ac_ieee80211_mgmt_reassociation_response_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_DISASSOCIATION: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->disassociation))) {
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ac_ieee80211_mgmt_disassociation_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_DEAUTHENTICATION: {
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if (mgmtlength >= (sizeof(struct ieee80211_header) + sizeof(mgmt->deauthetication))) {
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ac_ieee80211_mgmt_deauthentication_packet(sessiondata, radioid, mgmt, mgmtlength);
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}
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break;
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}
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case IEEE80211_FRAMECONTROL_MGMT_SUBTYPE_ACTION: {
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break;
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}
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}
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}
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/* */
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void ac_ieee80211_packet(struct ac_session_data_t* sessiondata, uint8_t radioid, const uint8_t* buffer, int length) {
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const struct ieee80211_header* header;
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uint16_t framecontrol;
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uint16_t framecontrol_type;
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uint16_t framecontrol_subtype;
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ASSERT(sessiondata != NULL);
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ASSERT(IS_VALID_RADIOID(radioid));
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ASSERT(buffer != NULL);
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ASSERT(length >= sizeof(struct ieee80211_header));
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/* Get type frame */
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header = (const struct ieee80211_header*)buffer;
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framecontrol = __le16_to_cpu(header->framecontrol);
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framecontrol_type = IEEE80211_FRAME_CONTROL_GET_TYPE(framecontrol);
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framecontrol_subtype = IEEE80211_FRAME_CONTROL_GET_SUBTYPE(framecontrol);
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/* Parsing frame */
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if (framecontrol_type == IEEE80211_FRAMECONTROL_TYPE_MGMT) {
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ac_ieee80211_mgmt_packet(sessiondata, radioid, (const struct ieee80211_header_mgmt*)buffer, length, framecontrol_subtype);
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}
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}
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