Stripped down import of hostapd v0.3.7

1 files changed, 213 insertions, 0 deletions

diff --git a/contrib/hostapd/eapol_sm.h b/contrib/hostapd/eapol_sm.h
new file mode 100644
index 0000000..7b74ed1
--- /dev/null
+++ b/contrib/hostapd/eapol_sm.h
@@ -0,0 +1,213 @@
+#ifndef EAPOL_SM_H
+#define EAPOL_SM_H
+
+#include "defs.h"
+
+/* IEEE Std 802.1X-REV-d11, Ch. 8.2 */
+
+typedef enum { ForceUnauthorized = 1, ForceAuthorized = 3, Auto = 2 }
+	PortTypes;
+typedef enum { Unauthorized = 2, Authorized = 1 } PortState;
+typedef enum { Both = 0, In = 1 } ControlledDirection;
+typedef unsigned int Counter;
+
+
+/* Authenticator PAE state machine */
+struct eapol_auth_pae_sm {
+	/* variables */
+	Boolean eapolLogoff;
+	Boolean eapolStart;
+	Boolean eapRestart;
+	PortTypes portMode;
+	unsigned int reAuthCount;
+
+	/* constants */
+	unsigned int quietPeriod; /* default 60; 0..65535 */
+#define AUTH_PAE_DEFAULT_quietPeriod 60
+	unsigned int reAuthMax; /* default 2 */
+#define AUTH_PAE_DEFAULT_reAuthMax 2
+
+	/* counters */
+	Counter authEntersConnecting;
+	Counter authEapLogoffsWhileConnecting;
+	Counter authEntersAuthenticating;
+	Counter authAuthSuccessesWhileAuthenticating;
+	Counter authAuthTimeoutsWhileAuthenticating;
+	Counter authAuthFailWhileAuthenticating;
+	Counter authAuthEapStartsWhileAuthenticating;
+	Counter authAuthEapLogoffWhileAuthenticating;
+	Counter authAuthReauthsWhileAuthenticated;
+	Counter authAuthEapStartsWhileAuthenticated;
+	Counter authAuthEapLogoffWhileAuthenticated;
+
+	enum { AUTH_PAE_INITIALIZE, AUTH_PAE_DISCONNECTED, AUTH_PAE_CONNECTING,
+	       AUTH_PAE_AUTHENTICATING, AUTH_PAE_AUTHENTICATED,
+	       AUTH_PAE_ABORTING, AUTH_PAE_HELD, AUTH_PAE_FORCE_AUTH,
+	       AUTH_PAE_FORCE_UNAUTH, AUTH_PAE_RESTART } state;
+};
+
+
+/* Backend Authentication state machine */
+struct eapol_backend_auth_sm {
+	/* variables */
+	Boolean eapNoReq;
+	Boolean eapReq;
+	Boolean eapResp;
+
+	/* constants */
+	unsigned int serverTimeout; /* default 30; 1..X */
+#define BE_AUTH_DEFAULT_serverTimeout 30
+
+	/* counters */
+	Counter backendResponses;
+	Counter backendAccessChallenges;
+	Counter backendOtherRequestsToSupplicant;
+	Counter backendAuthSuccesses;
+	Counter backendAuthFails;
+
+	enum { BE_AUTH_REQUEST, BE_AUTH_RESPONSE, BE_AUTH_SUCCESS,
+	       BE_AUTH_FAIL, BE_AUTH_TIMEOUT, BE_AUTH_IDLE, BE_AUTH_INITIALIZE,
+	       BE_AUTH_IGNORE
+	} state;
+};
+
+
+/* Reauthentication Timer state machine */
+struct eapol_reauth_timer_sm {
+	/* constants */
+	unsigned int reAuthPeriod; /* default 3600 s */
+	Boolean reAuthEnabled;
+
+	enum { REAUTH_TIMER_INITIALIZE, REAUTH_TIMER_REAUTHENTICATE } state;
+};
+
+
+/* Authenticator Key Transmit state machine */
+struct eapol_auth_key_tx {
+	enum { AUTH_KEY_TX_NO_KEY_TRANSMIT, AUTH_KEY_TX_KEY_TRANSMIT } state;
+};
+
+
+/* Key Receive state machine */
+struct eapol_key_rx {
+	/* variables */
+	Boolean rxKey;
+
+	enum { KEY_RX_NO_KEY_RECEIVE, KEY_RX_KEY_RECEIVE } state;
+};
+
+
+/* Controlled Directions state machine */
+struct eapol_ctrl_dir {
+	/* variables */
+	ControlledDirection adminControlledDirections;
+	ControlledDirection operControlledDirections;
+	Boolean operEdge;
+
+	enum { CTRL_DIR_FORCE_BOTH, CTRL_DIR_IN_OR_BOTH } state;
+};
+
+
+struct eap_sm;
+
+struct eapol_state_machine {
+	/* timers */
+	int aWhile;
+	int quietWhile;
+	int reAuthWhen;
+
+	/* global variables */
+	Boolean authAbort;
+	Boolean authFail;
+	PortState authPortStatus;
+	Boolean authStart;
+	Boolean authTimeout;
+	Boolean authSuccess;
+	Boolean eapFail;
+	Boolean eapolEap;
+	Boolean eapSuccess;
+	Boolean eapTimeout;
+	Boolean initialize;
+	Boolean keyAvailable;
+	Boolean keyDone;
+	Boolean keyRun;
+	Boolean keyTxEnabled;
+	PortTypes portControl;
+	Boolean portEnabled;
+	Boolean portValid;
+	Boolean reAuthenticate;
+
+	/* Port Timers state machine */
+	/* 'Boolean tick' implicitly handled as registered timeout */
+
+	struct eapol_auth_pae_sm auth_pae;
+	struct eapol_backend_auth_sm be_auth;
+	struct eapol_reauth_timer_sm reauth_timer;
+	struct eapol_auth_key_tx auth_key_tx;
+	struct eapol_key_rx key_rx;
+	struct eapol_ctrl_dir ctrl_dir;
+
+	/* Authenticator Statistics Table */
+	Counter dot1xAuthEapolFramesRx;
+	Counter dot1xAuthEapolFramesTx;
+	Counter dot1xAuthEapolStartFramesRx;
+	Counter dot1xAuthEapolLogoffFramesRx;
+	Counter dot1xAuthEapolRespIdFramesRx;
+	Counter dot1xAuthEapolRespFramesRx;
+	Counter dot1xAuthEapolReqIdFramesTx;
+	Counter dot1xAuthEapolReqFramesTx;
+	Counter dot1xAuthInvalidEapolFramesRx;
+	Counter dot1xAuthEapLengthErrorFramesRx;
+	Counter dot1xAuthLastEapolFrameVersion;
+
+	/* Other variables - not defined in IEEE 802.1X */
+	u8 addr[ETH_ALEN]; /* Supplicant address */
+#define EAPOL_SM_PREAUTH BIT(0)
+	int flags; /* EAPOL_SM_* */
+
+	int radius_identifier;
+	/* TODO: check when the last messages can be released */
+	struct radius_msg *last_recv_radius;
+	u8 *last_eap_supp; /* last received EAP Response from Supplicant */
+	size_t last_eap_supp_len;
+	u8 *last_eap_radius; /* last received EAP Response from Authentication
+			      * Server */
+	size_t last_eap_radius_len;
+	u8 *identity;
+	size_t identity_len;
+	u8 *radius_class;
+	size_t radius_class_len;
+
+	/* Keys for encrypting and signing EAPOL-Key frames */
+	u8 *eapol_key_sign;
+	size_t eapol_key_sign_len;
+	u8 *eapol_key_crypt;
+	size_t eapol_key_crypt_len;
+
+	Boolean rx_identity; /* set to TRUE on reception of
+			      * EAP-Response/Identity */
+
+	struct eap_sm *eap;
+
+	/* currentId was removed in IEEE 802.1X-REV, but it is needed to filter
+	 * out EAP-Responses to old packets (e.g., to two EAP-Request/Identity
+	 * packets that are often sent in the beginning of the authentication).
+	 */
+	u8 currentId;
+
+	/* Somewhat nasty pointers to global hostapd and STA data to avoid
+	 * passing these to every function */
+	struct hostapd_data *hapd;
+	struct sta_info *sta;
+};
+
+
+struct eapol_state_machine *eapol_sm_alloc(hostapd *hapd,
+					   struct sta_info *sta);
+void eapol_sm_free(struct eapol_state_machine *sm);
+void eapol_sm_step(struct eapol_state_machine *sm);
+void eapol_sm_initialize(struct eapol_state_machine *sm);
+void eapol_sm_dump_state(FILE *f, const char *prefix,
+			 struct eapol_state_machine *sm);
+
+#endif /* EAPOL_SM_H */