/*
- * otp.h
* $Id$
*
* This program is free software; you can redistribute it and/or modify
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
- * Copyright 2001-2005 Google, Inc.
- * Copyright 2005 Frank Cusack
+ * Copyright 2005,2006 TRI-D Systems, Inc.
*/
#ifndef OTP_H
#define OTP_H
-#ifndef _REENTRANT
-#define _REENTRANT
-#endif
-#include <pthread.h>
-
-#include <inttypes.h>
-#include <openssl/des.h> /* des_cblock */
-#include <time.h> /* time_t */
-
-/*
- * Things you might like to change (although most are configurables)
- */
-
-/* Default passwd file */
-#define OTP_PWDFILE "/etc/otppasswd"
-
-/* state manager rendezvous point */
-#define OTP_LSMD_RP "/var/run/lsmd/socket"
-
-/* Default prompt for presentation of challenge */
-#define OTP_CHALLENGE_PROMPT "Challenge: %s\n Response: "
-
-/* Must be a multiple of sizeof(des_cblock) (8); read src before changing. */
-#define OTP_MAX_CHALLENGE_LEN 32
-
-/* Password that means "challenge me" in fast_sync mode */
-#define OTP_CHALLENGE_REQ "challenge"
-
-/* Password that means "challenge me and resync" in fast_sync mode */
-#define OTP_RESYNC_REQ "resync"
-
-/* Max event window size for sync modes */
-#define OTP_MAX_EWINDOW_SIZE 10
-/* Max time window size for sync modes. More than 10 may not be usable. */
-#define OTP_MAX_TWINDOW_SIZE 10
-
-/*
- * PRNG device that does not block;
- * /dev/urandom is "merely" cryptographically strong on Linux. :-)
- */
-#define OTP_DEVURANDOM "/dev/urandom"
+#include "ident.h"
+RCSIDH(otp_h, "$Id$");
+#include <sys/types.h>
/*
- * You shouldn't change anything past this point
+ * NOTE: This file must be synced between plugins and otpd.
*/
-
-/* struct used for instance/option data */
-typedef struct otp_option_t {
- char *pwdfile; /* file containing user:card_type:key entries */
- char *lsmd_rp; /* state manager rendezvous point */
- char *chal_prompt; /* text to present challenge to user, must have %s */
- int chal_len; /* challenge length, min 5 digits */
- int softfail; /* number of auth fails before time delay starts */
- int hardfail; /* number of auth fails when user is locked out */
- int fast_sync; /* response-before-challenge mode */
- int allow_sync; /* useful to override pwdfile card_type settings */
- int allow_async; /* C/R mode allowed? */
- char *chal_req; /* keyword requesting challenge for fast_sync mode */
- char *resync_req; /* keyword requesting resync for fast_sync mode */
- int prepend_pin; /* prepend (vs. append) PIN? */
- int ewindow_size; /* sync mode event window size (right side value) */
- int ewindow2_size; /* softfail override event window size */
- int ewindow2_delay; /* softfail override max time delay */
-#if defined(FREERADIUS)
- /* freeradius-specific items */
- int chal_delay; /* max delay time for response, in seconds */
- const char *name; /* instance name for otp_token_authorize() */
- int mschapv2_mppe_policy; /* whether or not do to mppe for mschapv2 */
- int mschapv2_mppe_types; /* key type/length for mschapv2/mppe */
- int mschap_mppe_policy; /* whether or not do to mppe for mschap */
- int mschap_mppe_types; /* key type/length for mschap/mppe */
-#elif defined(PAM)
- /* PAM specific items */
- int debug; /* print debug info? */
- char *fast_prompt; /* fast mode prompt */
+#ifndef OTP_MAX_CHALLENGE_LEN
+#define OTP_MAX_CHALLENGE_LEN 16
+#elif OTP_MAX_CHALLENGE_LEN != 16
+#error OTP_MAX_CHALLENGE_LEN
#endif
-#if 0
- int twindow_min; /* sync mode time window left side */
- int twindow_max; /* sync mode time window right side */
-#endif
-} otp_option_t;
-
-/* user-specific info */
-#define OTP_MAX_CARDNAME_LEN 32
-#define OTP_MAX_KEY_LEN 256
-#define OTP_MAX_PIN_LEN 256
-struct cardops_t;
-typedef struct otp_user_info_t {
- const char *username;
- struct cardops_t *cardops;
-
- char card[OTP_MAX_CARDNAME_LEN + 1];
- uint32_t featuremask;
-
- char keystring[OTP_MAX_KEY_LEN * 2 + 1];
- unsigned char keyblock[OTP_MAX_KEY_LEN];
- char pin[OTP_MAX_PIN_LEN + 1];
-#if 0
- void *keyschedule;
-#endif
-} otp_user_info_t;
-
-/* user-specific state info */
-#define OTP_MAX_CSD_LEN 64
-typedef struct otp_user_state_t {
- int locked; /* locked aka success flag */
- int *fdp; /* fd for return data */
- int updated; /* state updated? (1 unless err) */
- char challenge[OTP_MAX_CHALLENGE_LEN+1]; /* next sync chal */
- char csd[OTP_MAX_CSD_LEN+1]; /* card specific data */
- unsigned failcount; /* number of consecutive failures */
- time_t authtime; /* time of last auth */
- int authpos; /* window position for softfail */
-} otp_user_state_t;
-/* fc (failcondition) shortcuts */
-#define OTP_FC_FAIL_NONE 0 /* no failures */
-#define OTP_FC_FAIL_HARD 1 /* failed hard */
-#define OTP_FC_FAIL_SOFT 2 /* failed soft */
-
-/* otp_cardops.c */
-/* return codes from otp_pw_valid() */
#define OTP_RC_OK 0
#define OTP_RC_USER_UNKNOWN 1
#define OTP_RC_AUTHINFO_UNAVAIL 2
#define OTP_RC_AUTH_ERR 3
#define OTP_RC_MAXTRIES 4
#define OTP_RC_SERVICE_ERR 5
-struct otp_pwe_cmp_t;
-typedef int (*cmpfunc_t)(struct otp_pwe_cmp_t *data, const char *passcode);
-extern int otp_pw_valid(const char *username,
- char *challenge, const char *passcode,
- int resync, const otp_option_t *opt,
- cmpfunc_t cmpfunc, void *data,
- const char *log_prefix);
-
-/* otp_x99.c */
-extern int otp_x99_mac(const unsigned char *input, size_t len,
- unsigned char output[8],
- const unsigned char keyblock[OTP_MAX_KEY_LEN]);
-/* otp_util.c */
-/* Character maps for generic hex and vendor specific decimal modes */
-extern const char otp_hex_conversion[];
-extern const char otp_cc_dec_conversion[];
-extern const char otp_snk_dec_conversion[];
-extern const char otp_sc_friendly_conversion[];
-
-extern int otp_get_random(int fd, unsigned char *rnd_data, int req_bytes);
-extern int otp_get_challenge(int fd, char *challenge, int len);
-
-extern int otp_keystring2keyblock(const char *s, unsigned char keyblock[]);
-extern void otp_keyblock2keystring(char *s, const des_cblock keyblock,
- const char conversion[17]);
-
-extern int otp_get_user_info(const char *pwdfile, const char *username,
- otp_user_info_t *user_info);
-
-/* otp_state.c */
-extern int otp_state_get(const otp_option_t *opt, const char *username,
- otp_user_state_t *user_state, const char *log_prefix);
-extern int otp_state_put(const char *username, otp_user_state_t *user_state,
- const char *log_prefix);
-
-/* otp_site.c */
-extern int otp_challenge_transform(const char *username,
- char challenge[OTP_MAX_CHALLENGE_LEN + 1]);
-
-/* otp_log.c */
-extern void otp_log(int level, const char *format, ...);
-
-#if defined(FREERADIUS)
-#include "otp_rad.h"
-#elif defined(PAM)
-#include "otp_pam.h"
-#endif
+#define OTP_MAX_USERNAME_LEN 31
+#define OTP_MAX_PASSCODE_LEN 47
+#define OTP_MAX_CHAP_CHALLENGE_LEN 16
+#define OTP_MAX_CHAP_RESPONSE_LEN 50
+
+typedef enum otp_pwe_t {
+ PWE_PAP = 1,
+ PWE_CHAP = 3,
+ PWE_MSCHAP = 5,
+ PWE_MSCHAP2 = 7,
+} otp_pwe_t;
+
+typedef struct otp_request_t {
+ int version; /* 1 */
+ char username[OTP_MAX_USERNAME_LEN + 1];
+ char challenge[OTP_MAX_CHALLENGE_LEN + 1]; /* USER challenge */
+ struct {
+ otp_pwe_t pwe;
+ char passcode[OTP_MAX_PASSCODE_LEN + 1];
+ unsigned char challenge[OTP_MAX_CHAP_CHALLENGE_LEN]; /* CHAP challenge */
+ size_t clen;
+ unsigned char response[OTP_MAX_CHAP_RESPONSE_LEN];
+ size_t rlen;
+ } pwe;
+ int allow_async; /* async auth allowed? */
+ int allow_sync; /* sync auth allowed? */
+ unsigned challenge_delay; /* min delay between async auths */
+ int resync; /* resync on async auth? */
+} otp_request_t;
+
+typedef struct otp_reply_t {
+ int version; /* 1 */
+ int rc;
+ char passcode[OTP_MAX_PASSCODE_LEN + 1];
+} otp_reply_t;
#endif /* OTP_H */
projects / freeradius.git / blobdiff