2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
17 #ifdef HAVE_SYS_RESOURCE_H
18 # include <sys/resource.h>
21 #ifdef IGNORE_SOME_GCC_WARNINGS
22 # pragma GCC diagnostic warning "-Wdeprecated-declarations"
28 #include <hcrypto/des.h>
36 #include <afs/cellconfig.h>
38 #include <afs/com_err.h>
39 #include <afs/afsutil.h>
40 #include <afs/audit.h>
46 #include "kauth_internal.h"
48 #include "kadatabase.h"
51 extern struct ubik_dbase *KA_dbase;
52 struct kaheader cheader;
53 Date cheaderReadTime; /* time cheader last read in */
54 extern struct afsconf_dir *KA_conf; /* for getting cell info */
58 char lrealm[MAXKTCREALMLEN];
60 #ifndef EXPIREPW /* password expiration default yes */
64 #ifndef AUTOCPWINTERVAL
65 #define AUTOCPWINTERVAL (24*3600)
67 #ifndef AUTOCPWUPDATES
68 #define AUTOCPWUPDATES 128
73 static afs_int32 autoCPWInterval;
74 static afs_int32 autoCPWUpdates;
76 static afs_int32 set_password(struct ubik_trans *tt, char *name,
78 struct ktc_encryptionKey *password,
79 afs_int32 kvno, afs_int32 caller);
80 static afs_int32 impose_reuse_limits(EncryptionKey *password,
81 struct kaentry *tentry);
82 static int create_user(struct ubik_trans *tt, char *name, char *instance,
83 struct ktc_encryptionKey *key, afs_int32 caller,
86 /* This routine is called whenever an RPC interface needs the time. It uses
87 the current time to randomize a 128 bit value that is used to change the
88 AuthServer Admin and TGS keys automatically. */
90 static Date nextAutoCPWTime = 0;
91 static afs_int32 totalUpdates = 0;
93 /* This routine is ostensibly to get the current time, but basically its job is
94 to periodically update a random number. It also periodically updates the
95 keys for the builtin servers. This is why it needs a transaction pointer
96 and returns an error code. If the caller is in a read transaction, the tt
97 ptr should be zero and the return code need not be checked. */
100 get_time(Date *timeP,
101 struct ubik_trans *tt, /* tt != 0: a write transaction */
102 int admin) /* the caller is an admin user */
104 /* random value used to change Admin & TGS keys, this is at risk during
105 * multi-threaded operation, but I think the consequences are fairly
107 static afs_uint32 random_value[4];
110 unsigned int bit, nbit;
114 gettimeofday(&time, NULL);
115 bit = (random_value[3] >> 31) & 1; /* get high bit of high word */
116 for (i = 0; i < 4; i++) {
117 nbit = random_value[i] >> 31;
118 random_value[i] = (random_value[i] << 1) + bit;
121 /* get 60ths from usec. This is all the real randomness there is. */
122 random_value[0] += time.tv_usec / 16667;
124 if (nextAutoCPWTime == 0) { /* initialize things */
125 nextAutoCPWTime = time.tv_sec + autoCPWInterval;
126 memcpy(&random_value[0], &time, 8);
127 memcpy(&random_value[2], &time, 8);
130 if ((++totalUpdates >= autoCPWUpdates) && tt && /* a write transaction */
131 ((admin && (time.tv_sec >= nextAutoCPWTime))
132 || (time.tv_sec >= nextAutoCPWTime + autoCPWInterval))) {
133 struct ktc_encryptionKey key;
134 char buf[4 * sizeof(key) + 1];
135 struct kaentry tentry;
137 char bob[KA_TIMESTR_LEN];
139 ka_timestr(time.tv_sec, bob, KA_TIMESTR_LEN);
140 es_Report("Auto CPW at %s\n", bob);
142 es_Report(" ... even though no ADMIN user\n");
144 code = FindBlock(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &to, &tentry);
147 if (to) { /* check if auto cpw is disabled */
148 if (!(ntohl(tentry.flags) & KAFNOCPW)) {
149 memcpy(&key, &random_value[0], sizeof(key));
150 DES_set_odd_parity(ktc_to_cblock(&key));
152 set_password(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &key, 0,
155 DES_init_random_number_generator(ktc_to_cblock(&key));
156 ka_ConvertBytes(buf, sizeof(buf), (char *)&key,
158 es_Report("New Admin key is %s\n", buf);
161 ("in get_time: set_password failed because: %d\n",
168 code = FindBlock(tt, KA_TGS_NAME, lrealm, &to, &tentry);
171 if (to) { /* check if auto cpw is disabled */
172 if (!(ntohl(tentry.flags) & KAFNOCPW)) {
173 memcpy(&key, &random_value[2], sizeof(key));
174 DES_set_odd_parity(ktc_to_cblock(&key));
175 code = set_password(tt, KA_TGS_NAME, lrealm, &key, 0, 0);
177 ka_ConvertBytes(buf, sizeof(buf), (char *)&key,
179 es_Report("New TGS key is %s\n", buf);
182 ("in get_time: set_password failed because: %s\n",
183 afs_error_message(code));
188 code = ka_FillKeyCache(tt); /* ensure in-core copy is uptodate */
192 nextAutoCPWTime = time.tv_sec + autoCPWInterval;
196 *timeP = time.tv_sec;
200 static int noAuthenticationRequired; /* global state */
201 static int recheckNoAuth; /* global state */
203 /* kaprocsInited is sort of a lock: during a transaction only one process runs
204 while kaprocsInited is false. */
206 static int kaprocsInited = 0;
208 /* This variable is protected by the kaprocsInited flag. */
210 static int (*rebuildDatabase) (struct ubik_trans *);
212 /* This is called to initialize the database */
215 initialize_database(struct ubik_trans *tt)
217 struct ktc_encryptionKey key;
220 gettimeofday((struct timeval *)&key, NULL); /* this is just a cheap seed key */
221 DES_set_odd_parity(ktc_to_cblock(&key));
222 DES_init_random_number_generator(ktc_to_cblock(&key));
223 if ((code = DES_new_random_key(ktc_to_cblock(&key)))
225 create_user(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &key, 0,
226 KAFNORMAL | KAFNOSEAL | KAFNOTGS)))
228 if ((code = DES_new_random_key(ktc_to_cblock(&key)))
230 create_user(tt, KA_TGS_NAME, lrealm, &key, 0,
231 KAFNORMAL | KAFNOSEAL | KAFNOTGS)))
236 /* This routine handles initialization required by this module. The initFlags
237 parameter passes some information about the command line arguments. */
240 init_kaprocs(const char *lclpath, int initFlags)
243 struct ubik_trans *tt;
244 struct ktc_encryptionKey key;
249 return KAINTERNALERROR;
251 return KAINTERNALERROR;
252 code = afsconf_GetLocalCell(KA_conf, lrealm, sizeof(lrealm));
254 printf("** Can't determine local cell name!\n");
257 ucstring(lrealm, lrealm, sizeof(lrealm));
261 noAuthenticationRequired = 1;
265 noAuthenticationRequired = afsconf_GetNoAuthFlag(KA_conf);
266 if (noAuthenticationRequired)
267 printf("Running server with security disabled\n");
270 autoCPWInterval = 10;
273 autoCPWInterval = AUTOCPWINTERVAL;
274 autoCPWUpdates = AUTOCPWUPDATES;
277 init_kadatabase(initFlags);
278 rebuildDatabase = initialize_database;
280 if ((code = InitAuthServ(&tt, LOCKREAD, 0))) {
281 printf("init_kaprocs: InitAuthServ failed: code = %d\n", code);
284 code = ka_LookupKey(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &kvno, &key);
288 ("init_kaprocs: ka_LookupKey (code = %d) DB not initialized properly?\n",
292 DES_init_random_number_generator(ktc_to_cblock(&key));
294 code = ubik_EndTrans(tt);
296 printf("init_kaprocs: ubik_EndTrans failed: code = %d\n", code);
300 kaux_opendb((char *)lclpath);/* aux database stores failure counters */
301 rebuildDatabase = 0; /* only do this during init */
306 /* These variable are for returning debugging info about the state of the
307 server. If they get trashed during multi-threaded operation it doesn't
310 /* this is global so COUNT_REQ in krb_udp.c can refer to it. */
311 char *lastOperation = 0; /* name of last operation */
312 static Date lastTrans; /* time of last transaction */
314 static char adminPrincipal[256];
315 static char authPrincipal[256];
316 static char tgsPrincipal[256];
317 static char tgsServerPrincipal[256];
320 save_principal(char *p, char *n, char *i, char *c)
330 if (i && strlen(i)) {
340 if (c && strlen(c)) {
352 check_auth(struct rx_call *call,
353 struct ubik_trans *at,
354 int admin, /* require caller to be ADMIN */
355 afs_int32 *acaller_id)
358 char name[MAXKTCNAMELEN];
359 char instance[MAXKTCNAMELEN];
360 char cell[MAXKTCREALMLEN];
362 Date expiration; /* checked by Security Module */
363 struct kaentry tentry;
370 noAuthenticationRequired = afsconf_GetNoAuthFlag(KA_conf);
372 si = rx_SecurityClassOf(rx_ConnectionOf(call));
373 if (si == RX_SCINDEX_VAB) {
374 printf("No support for VAB security module yet.\n");
376 } else if (si == RX_SCINDEX_NULL) {
379 } else if (si != RX_SCINDEX_KAD) {
380 es_Report("Unknown security index %d\n", si);
385 rxkad_GetServerInfo(rx_ConnectionOf(call), &level, &expiration, name,
386 instance, cell, &kvno);
390 if (level != rxkad_crypt) {
391 es_Report("Incorrect security level = %d\n", level);
396 if (!name_instance_legal(name, instance))
400 ("Authorization rejected because we don't understand intercell stuff yet: ",
402 printf("@%s\n", cell);
406 code = FindBlock(at, name, instance, acaller_id, &tentry);
409 if (*acaller_id == 0) {
410 ka_PrintUserID("User ", name, instance, " unknown.\n");
413 save_principal(adminPrincipal, name, instance, 0);
416 if (!(ntohl(tentry.flags) & KAFADMIN)) {
417 if (noAuthenticationRequired) {
418 ka_PrintUserID("Authorization approved for ", name, instance,
419 " because there is no authentication required\n");
420 osi_auditU(call, UnAuthEvent, code, AUD_STR, name, AUD_STR,
421 instance, AUD_STR, cell, AUD_END);
424 ka_PrintUserID("User ", name, instance, " is not ADMIN.\n");
427 osi_auditU(call, UseOfPrivilegeEvent, code, AUD_STR, name, AUD_STR,
428 instance, AUD_STR, cell, AUD_END);
433 if (noAuthenticationRequired) {
435 ("Caller w/o authorization approved no authentication required\n");
436 osi_auditU(call, UnAuthEvent, code, AUD_STR, name, AUD_STR, instance,
437 AUD_STR, cell, AUD_END);
440 return code; /* no auth info */
444 AwaitInitialization(void)
447 while (!kaprocsInited) {
450 else if (time(0) - start > 5)
457 /* This is called by every RPC interface to create a Ubik transaction and read
458 the database header into core */
461 InitAuthServ(struct ubik_trans **tt,
462 int lock, /* indicate read/write transaction */
463 int *this_op) /* opcode of RPC proc, for COUNT_ABO */
466 afs_int32 start = 0; /* time started waiting for quorum */
467 float wait = 0.91; /* start waiting for 1 second */
469 /* Wait for server initialization to finish if not during init_kaprocs */
471 if ((code = AwaitInitialization()))
474 for (code = UNOQUORUM; code == UNOQUORUM;) {
475 if (lock == LOCKREAD)
476 code = ubik_BeginTransReadAny(KA_dbase, UBIK_READTRANS, tt);
478 code = ubik_BeginTrans(KA_dbase, UBIK_WRITETRANS, tt);
479 if (code == UNOQUORUM) { /* no quorum elected */
483 int delay = time(0) - start;
484 if (this_op) { /* punt quickly, if RPC call */
487 } else { /* more patient during init. */
492 printf("Waiting for quorum election.\n");
495 IOMGR_Sleep((int)wait);
500 if ((code = ubik_SetLock(*tt, 1, 1, lock))) {
503 ubik_AbortTrans(*tt);
506 /* check that dbase is initialized and setup cheader */
507 if (lock == LOCKREAD) {
508 /* init but don't fix because this is read only */
509 code = CheckInit(*tt, 0);
511 ubik_AbortTrans(*tt); /* abort, since probably I/O error */
512 /* we did the check under a ReadAny transaction, but now, after
513 * getting a write transaction (and thus some real guarantees
514 * about what databases are really out there), we will check again
515 * in CheckInit before nuking the database. Since this may now get
516 * a UNOQUORUM we'll just do this from the top.
518 if ((code = InitAuthServ(tt, LOCKWRITE, this_op)))
520 if ((code = ubik_EndTrans(*tt)))
523 /* now open the read transaction that was originally requested. */
524 return InitAuthServ(tt, lock, this_op);
527 if ((code = CheckInit(*tt, rebuildDatabase))) {
530 ubik_AbortTrans(*tt);
535 ka_FillKeyCache(*tt); /* ensure in-core copy is uptodate */
539 /* returns true if name is specially known by AuthServer */
542 special_name(char *name, char *instance)
545 return ((!strcmp(name, KA_TGS_NAME) && !strcmp(instance, lrealm))
546 || (strcmp(name, KA_ADMIN_NAME) == 0));
550 create_user(struct ubik_trans *tt, char *name, char *instance,
551 struct ktc_encryptionKey *key, afs_int32 caller,
556 struct kaentry tentry;
557 afs_int32 maxLifetime;
559 code = FindBlock(tt, name, instance, &to, &tentry);
563 return KAEXIST; /* name already exists, we fail */
565 to = AllocBlock(tt, &tentry);
569 /* otherwise we have a block */
570 strncpy(tentry.userID.name, name, sizeof(tentry.userID.name));
571 strncpy(tentry.userID.instance, instance, sizeof(tentry.userID.instance));
572 tentry.flags = htonl(flags);
573 if (special_name(name, instance)) { /* this overrides key & version */
574 tentry.flags = htonl(ntohl(tentry.flags) | KAFSPECIAL);
575 tentry.key_version = htonl(-1); /* don't save this key */
576 if ((code = ka_NewKey(tt, to, &tentry, key)))
579 memcpy(&tentry.key, key, sizeof(tentry.key));
580 tentry.key_version = htonl(0);
582 tentry.user_expiration = htonl(NEVERDATE);
583 code = get_time(&tentry.modification_time, tt, 1);
587 /* time and addr of entry for guy changing this entry */
588 tentry.modification_time = htonl(tentry.modification_time);
589 tentry.modification_id = htonl(caller);
590 tentry.change_password_time = tentry.modification_time;
592 if (strcmp(name, KA_TGS_NAME) == 0)
593 maxLifetime = MAXKTCTICKETLIFETIME;
594 else if (strcmp(name, KA_ADMIN_NAME) == 0)
595 maxLifetime = 10 * 3600;
596 else if (strcmp(name, AUTH_SUPERUSER) == 0)
597 maxLifetime = 100 * 3600;
599 maxLifetime = 25 * 3600; /* regular users */
600 tentry.max_ticket_lifetime = htonl(maxLifetime);
602 code = ThreadBlock(tt, to, &tentry);
606 /* Put actual stub routines here */
609 SKAM_CreateUser(struct rx_call *call, char *aname, char *ainstance,
610 EncryptionKey ainitpw)
614 code = kamCreateUser(call, aname, ainstance, ainitpw);
615 osi_auditU(call, AFS_KAM_CrUserEvent, code, AUD_STR, aname, AUD_STR,
622 kamCreateUser(struct rx_call *call, char *aname, char *ainstance,
623 EncryptionKey ainitpw)
626 struct ubik_trans *tt;
627 afs_int32 caller; /* Disk offset of caller's entry */
629 COUNT_REQ(CreateUser);
630 if (!DES_check_key_parity(EncryptionKey_to_cblock(&ainitpw)) ||
631 DES_is_weak_key(EncryptionKey_to_cblock(&ainitpw)))
633 if (!name_instance_legal(aname, ainstance))
635 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
637 code = check_auth(call, tt, 1, &caller);
643 code = create_user(tt, aname, ainstance, EncryptionKey_to_ktc(&ainitpw), caller, KAFNORMAL);
649 code = ubik_EndTrans(tt);
650 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
656 SKAA_ChangePassword(struct rx_call *call, char *aname, char *ainstance,
657 ka_CBS *arequest, ka_BBS *oanswer)
661 code = ChangePassWord(call, aname, ainstance, arequest, oanswer);
662 osi_auditU(call, AFS_KAA_ChPswdEvent, code, AUD_STR, aname, AUD_STR,
668 ChangePassWord(struct rx_call *call, char *aname, char *ainstance,
669 ka_CBS *arequest, ka_BBS *oanswer)
672 struct ubik_trans *tt;
673 afs_int32 to; /* offset of block */
674 struct kaentry tentry;
675 struct ka_cpwRequest request; /* request after decryption */
676 char *answer; /* where answer is to be put */
677 int answer_len; /* length of answer packet */
678 afs_int32 kvno; /* requested key version number */
679 DES_key_schedule user_schedule; /* key schedule for user's key */
680 Date request_time; /* time request originated */
682 COUNT_REQ(ChangePassword);
683 if (!name_instance_legal(aname, ainstance))
685 if (strcmp(ainstance, KA_ADMIN_NAME) == 0)
687 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
690 code = FindBlock(tt, aname, ainstance, &to, &tentry);
694 if (to == 0) { /* no such user */
698 if (ntohl(tentry.flags) & KAFNOCPW) {
703 /* decrypt request w/ user password */
704 if ((code = DES_key_sched(ktc_to_cblock(&tentry.key), &user_schedule)))
705 es_Report("In KAChangePassword: key_sched returned %d\n", code);
706 DES_pcbc_encrypt(arequest->SeqBody, &request,
707 min(arequest->SeqLen, sizeof(request)), &user_schedule,
708 ktc_to_cblockptr(&tentry.key), DECRYPT);
710 /* validate the request */
711 request_time = ntohl(request.time); /* reorder date */
712 kvno = ntohl(request.kvno);
713 if ((abs(request_time - time(0)) > KTC_TIME_UNCERTAINTY) || strncmp(request.label, KA_CPW_REQ_LABEL, sizeof(request.label)) || (request.spare) || (kvno > MAXKAKVNO)) { /* these are reseved */
718 /* check to see if the new password was used before, or if there has
719 * not been sufficient time since the last password change
721 code = impose_reuse_limits(ktc_to_EncryptionKey(&request.newpw), &tentry);
726 /* Create the Answer Packet */
727 answer_len = sizeof(Date) + KA_LABELSIZE;
728 if (oanswer->MaxSeqLen < answer_len) {
729 code = KAANSWERTOOLONG;
732 oanswer->SeqLen = answer_len;
733 answer = oanswer->SeqBody;
734 request.time = htonl(request_time + 1);
735 memcpy(answer, (char *)&request.time, sizeof(Date));
736 answer += sizeof(Date);
737 memcpy(answer, KA_CPW_ANS_LABEL, KA_LABELSIZE);
739 DES_pcbc_encrypt(oanswer->SeqBody, oanswer->SeqBody, answer_len,
740 &user_schedule, ktc_to_cblockptr(&tentry.key), ENCRYPT);
742 code = set_password(tt, aname, ainstance, &request.newpw, kvno, 0);
748 cheader.stats.cpws = htonl(ntohl(cheader.stats.cpws) + 1);
750 kawrite(tt, DOFFSET(0, &cheader, &cheader.stats.cpws),
751 (char *)&cheader.stats.cpws, sizeof(afs_int32));
757 code = ubik_EndTrans(tt);
767 impose_reuse_limits(EncryptionKey *password, struct kaentry *tentry)
775 if (!tentry->pwsums[0] && npwSums > 1 && !tentry->pwsums[1])
776 return 0; /* password reuse limits not in effect */
778 code = get_time(&now, 0, 0);
782 if ((now - ntohl(tentry->change_password_time)) < MinHours * 60 * 60)
785 if (!memcmp(password, &(tentry->key), sizeof(EncryptionKey)))
788 code = ka_KeyCheckSum((char *)password, &newsum);
792 newsum = newsum & 0x000000ff;
793 for (i = 0; i < npwSums; i++) {
794 if (newsum == tentry->pwsums[i])
803 set_password(struct ubik_trans *tt, char *name, char *instance,
804 struct ktc_encryptionKey *password, afs_int32 kvno, afs_int32 caller)
807 afs_int32 to; /* offset of block */
808 struct kaentry tentry;
814 code = FindBlock(tt, name, instance, &to, &tentry);
818 return KANOENT; /* no such user */
820 /* if password reuse limits in effect, set the checksums, the hard way */
821 if (!tentry.pwsums[0] && npwSums > 1 && !tentry.pwsums[1]) {
822 /* do nothing, no limits */ ;
824 code = ka_KeyCheckSum((char *)&(tentry.key), &newsum);
827 for (i = npwSums - 1; i; i--)
828 tentry.pwsums[i] = tentry.pwsums[i - 1];
829 tentry.pwsums[0] = newsum & 0x000000ff;
833 if (special_name(name, instance)) { /* set key over rides key_version */
834 tentry.flags = htonl(ntohl(tentry.flags) | KAFSPECIAL);
835 if ((code = ka_NewKey(tt, to, &tentry, password)))
838 memcpy(&tentry.key, password, sizeof(tentry.key));
840 kvno = ntohl(tentry.key_version);
841 if ((kvno < 1) || (kvno >= MAXKAKVNO))
846 tentry.key_version = htonl((afs_int32) kvno); /* requested key version */
851 /* no-write prevents recursive call to set_password by AuthCPW code. */
852 code = get_time(&now, 0, 0);
856 tentry.modification_time = htonl(now);
857 tentry.modification_id = htonl(caller);
860 tentry.change_password_time = htonl(now);
862 if ((code = kawrite(tt, to, (char *) &tentry, sizeof(tentry))))
868 SKAM_SetPassword(struct rx_call *call, char *aname, char *ainstance,
869 afs_int32 akvno, EncryptionKey apassword)
873 code = kamSetPassword(call, aname, ainstance, akvno, apassword);
874 osi_auditU(call, AFS_KAM_SetPswdEvent, code, AUD_STR, aname, AUD_STR,
880 kamSetPassword(struct rx_call *call, char *aname, char *ainstance,
881 afs_int32 akvno, EncryptionKey apassword)
884 struct ubik_trans *tt;
885 afs_int32 caller; /* Disk offset of caller's entry */
886 struct kaentry tentry;
888 COUNT_REQ(SetPassword);
889 if (akvno > MAXKAKVNO)
890 return KABADARGUMENT;
891 if (!DES_check_key_parity(EncryptionKey_to_cblock(&apassword)) ||
892 DES_is_weak_key(EncryptionKey_to_cblock(&apassword)))
895 if (!name_instance_legal(aname, ainstance))
897 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
899 code = check_auth(call, tt, 0, &caller);
903 if ((code = karead(tt, caller, (char *)&tentry, sizeof(tentry)))) {
907 /* if the user is changing his own password or ADMIN then go ahead. */
908 if ((strcmp(tentry.userID.name, aname) == 0)
909 && (strcmp(tentry.userID.instance, ainstance) == 0)) {
910 if (ntohl(tentry.flags) & KAFNOCPW)
913 code = impose_reuse_limits(&apassword, &tentry);
916 set_password(tt, aname, ainstance, EncryptionKey_to_ktc(&apassword), akvno, 0);
918 } else if (ntohl(tentry.flags) & KAFADMIN) {
919 code = set_password(tt, aname, ainstance, EncryptionKey_to_ktc(&apassword), akvno, caller);
925 code = ubik_EndTrans(tt);
926 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
937 CoerseLifetime(Date start, Date end)
939 unsigned char kerberosV4Life;
940 kerberosV4Life = time_to_life(start, end);
941 end = life_to_time(start, kerberosV4Life);
946 GetEndTime(Date start, /* start time of ticket */
947 Date reqEnd, /* requested end time */
948 Date expiration, /* authorizing ticket's expiration */
949 struct kaentry *caller,
950 struct kaentry *server,
951 Date *endP) /* actual end time */
957 if (ntohl(caller->flags) & KAFNOTGS)
958 return KABADUSER; /* no new tickets for this user */
959 if (expiration && (ntohl(server->flags) & KAFNOSEAL))
960 return KABADSERVER; /* can't be target of GetTicket req */
962 expiration = NEVERDATE;
964 cExp = ntohl(caller->user_expiration);
965 sExp = ntohl(server->user_expiration);
970 cLife = start + ntohl(caller->max_ticket_lifetime);
971 sLife = start + ntohl(server->max_ticket_lifetime);
973 umin(umin(reqEnd, expiration),
974 umin(umin(cLife, sLife), umin(cExp, sExp)));
975 end = CoerseLifetime(start, end);
981 PrepareTicketAnswer(ka_BBS *oanswer, afs_int32 challenge, char *ticket,
982 afs_int32 ticketLen, struct ktc_encryptionKey *sessionKey,
983 Date start, Date end, struct kaentry *caller,
984 struct kaentry *server, char *cell, char *label)
987 struct ka_ticketAnswer *answer;
990 code = KAANSWERTOOLONG;
991 if (oanswer->MaxSeqLen <
992 sizeof(struct ka_ticketAnswer) - 5 * MAXKTCNAMELEN - MAXKTCTICKETLEN +
996 answer = (struct ka_ticketAnswer *)oanswer->SeqBody;
997 answer->challenge = htonl(challenge);
998 memcpy(&answer->sessionKey, sessionKey, sizeof(struct ktc_encryptionKey));
999 answer->startTime = htonl(start);
1000 answer->endTime = htonl(end);
1001 answer->kvno = server->key_version;
1002 answer->ticketLen = htonl(ticketLen);
1005 char *ans = answer->name; /* pointer to variable part */
1006 int rem; /* space remaining */
1007 int len; /* macro temp. */
1009 rem = oanswer->MaxSeqLen - (ans - oanswer->SeqBody);
1011 #define putstr(str) len = strlen (str)+1;\
1012 if (rem < len) return code;\
1014 ans += len; rem -= len
1015 putstr(caller->userID.name);
1016 putstr(caller->userID.instance);
1018 putstr(server->userID.name);
1019 putstr(server->userID.instance);
1020 if (rem < ticketLen + KA_LABELSIZE)
1022 memcpy(ans, ticket, ticketLen);
1025 memcpy(ans, label, KA_LABELSIZE);
1027 memset(ans, 0, KA_LABELSIZE);
1028 ans += KA_LABELSIZE;
1029 oanswer->SeqLen = (ans - oanswer->SeqBody);
1032 answer->cksum = htonl(cksum);
1033 oanswer->SeqLen = round_up_to_ebs(oanswer->SeqLen);
1034 if (oanswer->SeqLen > oanswer->MaxSeqLen)
1039 /* This is used to get a ticket granting ticket or an admininstration ticket.
1040 These two specific, built-in servers are special cases, which require the
1041 client's key as an additional security precaution. The GetTicket operation
1042 is normally disabled for these two principals. */
1045 Authenticate(int version, struct rx_call *call, char *aname, char *ainstance,
1046 Date start, Date end, ka_CBS *arequest, ka_BBS *oanswer)
1049 struct ubik_trans *tt;
1050 afs_int32 to; /* offset of block */
1052 struct kaentry server; /* entry for desired server */
1053 struct ka_gettgtRequest request; /* request after decryption */
1054 int tgt, adm; /* type of request */
1055 char *sname; /* principal of server */
1057 char ticket[MAXKTCTICKETLEN]; /* our copy of the ticket */
1059 struct ktc_encryptionKey sessionKey; /* we have to invent a session key */
1060 char *answer; /* where answer is to be put */
1061 int answer_len; /* length of answer packet */
1062 Date answer_time; /* 1+ request time in network order */
1063 afs_int32 temp; /* for htonl conversions */
1064 DES_key_schedule user_schedule; /* key schedule for user's key */
1065 afs_int32 tgskvno; /* key version of service key */
1066 struct ktc_encryptionKey tgskey; /* service key for encrypting ticket */
1068 afs_uint32 pwexpires;
1070 COUNT_REQ(Authenticate);
1071 if (!name_instance_legal(aname, ainstance))
1073 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1075 get_time(&now, 0, 0);
1077 sname = sinst = NULL;
1079 code = FindBlock(tt, aname, ainstance, &to, &tentry);
1083 if (to == 0) { /* no such user */
1088 /* have to check for locked before verifying the password, otherwise all
1089 * KALOCKED means is "yup, you guessed the password all right, now wait a
1090 * few minutes and we'll let you in"
1093 (to, (u_int) tentry.misc_auth_bytes[ATTEMPTS],
1094 (afs_uint32) tentry.misc_auth_bytes[LOCKTIME] << 9)) {
1100 save_principal(authPrincipal, aname, ainstance, 0);
1102 /* decrypt request w/ user password */
1103 if ((code = DES_key_sched(ktc_to_cblock(&tentry.key), &user_schedule)))
1104 es_Report("In KAAuthenticate: key_sched returned %d\n", code);
1105 DES_pcbc_encrypt(arequest->SeqBody, &request,
1106 min(arequest->SeqLen, sizeof(request)), &user_schedule,
1107 ktc_to_cblockptr(&tentry.key), DECRYPT);
1109 request.time = ntohl(request.time); /* reorder date */
1110 tgt = !strncmp(request.label, KA_GETTGT_REQ_LABEL, sizeof(request.label));
1111 adm = !strncmp(request.label, KA_GETADM_REQ_LABEL, sizeof(request.label));
1112 if (!(tgt || adm)) {
1113 kaux_inc(to, ((unsigned char)tentry.misc_auth_bytes[LOCKTIME]) << 9);
1114 code = KABADREQUEST;
1117 kaux_write(to, 0, 0); /* reset counters */
1120 if (!tentry.misc_auth_bytes[EXPIRES]) {
1121 /* 0 in the database means never, but 0 on the network means today */
1122 /* 255 on the network means "long time, maybe never" */
1125 pwexpires = tentry.misc_auth_bytes[EXPIRES];
1128 ntohl(tentry.change_password_time) + 24 * 60 * 60 * pwexpires;
1129 if (adm) { /* provide a little slack for admin ticket */
1130 pwexpires += 30 * 24 * 60 * 60; /* 30 days */
1132 if (pwexpires < now) {
1136 pwexpires = (pwexpires - now) / (24 * 60 * 60);
1137 if (pwexpires > 255)
1141 #endif /* EXPIREPW */
1143 if (abs(request.time - now) > KTC_TIME_UNCERTAINTY) {
1145 if (oanswer->MaxSeqLen < sizeof(afs_int32))
1146 code = KAANSWERTOOLONG;
1147 else { /* return our time if possible */
1148 oanswer->SeqLen = sizeof(afs_int32);
1149 request.time = htonl(now);
1150 memcpy(oanswer->SeqBody, &request.time, sizeof(afs_int32));
1156 sname = (tgt ? KA_TGS_NAME : KA_ADMIN_NAME);
1157 sinst = (tgt ? lrealm : KA_ADMIN_INST);
1158 code = FindBlock(tt, sname, sinst, &to, &server);
1166 tgskvno = ntohl(server.key_version);
1167 memcpy(&tgskey, &server.key, sizeof(tgskey));
1169 code = DES_new_random_key(ktc_to_cblock(&sessionKey));
1175 code = GetEndTime(start, end, 0 /*!GetTicket */ , &tentry, &server, &end);
1180 tkt_MakeTicket(ticket, &ticketLen, &tgskey, aname, ainstance, "",
1181 start, end, &sessionKey,
1182 rx_HostOf(rx_PeerOf(rx_ConnectionOf(call))), sname,
1190 ticketLen + sizeof(Date) + sizeof(struct ktc_encryptionKey) +
1191 2 * sizeof(afs_int32) + KA_LABELSIZE;
1192 answer_len = round_up_to_ebs(answer_len);
1193 if (answer_len > oanswer->MaxSeqLen) {
1194 code = KAANSWERTOOLONG;
1197 oanswer->SeqLen = answer_len;
1198 answer = oanswer->SeqBody;
1199 answer_time = htonl(request.time + 1);
1200 memcpy(answer, (char *)&answer_time, sizeof(Date));
1201 answer += sizeof(Date);
1202 memcpy(answer, (char *)&sessionKey, sizeof(struct ktc_encryptionKey));
1203 answer += sizeof(struct ktc_encryptionKey);
1204 temp = htonl(tgskvno);
1205 memcpy(answer, (char *)&temp, sizeof(afs_int32));
1206 answer += sizeof(afs_int32);
1207 temp = htonl(ticketLen);
1208 memcpy(answer, (char *)&temp, sizeof(afs_int32));
1209 answer += sizeof(afs_int32);
1210 memcpy(answer, ticket, ticketLen);
1211 answer += ticketLen;
1212 memcpy(answer, (tgt ? KA_GETTGT_ANS_LABEL : KA_GETADM_ANS_LABEL),
1218 PrepareTicketAnswer(oanswer, request.time + 1, ticket, ticketLen,
1219 &sessionKey, start, end, &tentry, &server, "",
1220 (tgt ? KA_GETTGT_ANS_LABEL :
1221 KA_GETADM_ANS_LABEL));
1226 && oanswer->SeqLen < oanswer->MaxSeqLen + sizeof(afs_int32)) {
1227 temp = pwexpires << 24; /* move it into the high byte */
1228 pwexpires = htonl(temp);
1230 memcpy((char *)oanswer->SeqBody + oanswer->SeqLen, &pwexpires,
1232 oanswer->SeqLen += sizeof(afs_int32);
1233 oanswer->SeqLen = round_up_to_ebs(oanswer->SeqLen);
1234 if (oanswer->SeqLen > oanswer->MaxSeqLen) {
1235 code = KAANSWERTOOLONG;
1239 #endif /* EXPIREPW */
1243 code = KAINTERNALERROR;
1246 DES_pcbc_encrypt(oanswer->SeqBody, oanswer->SeqBody, oanswer->SeqLen,
1247 &user_schedule, ktc_to_cblockptr(&tentry.key), ENCRYPT);
1248 code = ubik_EndTrans(tt);
1249 KALOG(aname, ainstance, sname, sinst, NULL, call->conn->peer->host,
1255 ubik_AbortTrans(tt);
1256 KALOG(aname, ainstance, sname, sinst, NULL, call->conn->peer->host,
1262 SKAA_Authenticate_old(struct rx_call *call, char *aname, char *ainstance,
1263 Date start, Date end, ka_CBS *arequest,
1268 IOMGR_Sleep(1); /* discourage use of this mechanism */
1270 Authenticate(0, call, aname, ainstance, start, end, arequest,
1272 osi_auditU(call, AFS_KAA_AuthOEvent, code, AUD_STR, aname, AUD_STR,
1273 ainstance, AUD_END);
1279 SKAA_Authenticate(struct rx_call *call, char *aname, char *ainstance,
1280 Date start, Date end, ka_CBS *arequest, ka_BBS *oanswer)
1285 Authenticate(1, call, aname, ainstance, start, end, arequest,
1287 osi_auditU(call, AFS_KAA_AuthEvent, code, AUD_STR, aname, AUD_STR,
1288 ainstance, AUD_END);
1294 SKAA_AuthenticateV2(struct rx_call *call, char *aname, char *ainstance,
1295 Date start, Date end, ka_CBS *arequest, ka_BBS *oanswer)
1300 Authenticate(2, call, aname, ainstance, start, end, arequest,
1302 osi_auditU(call, AFS_KAA_AuthEvent, code, AUD_STR, aname, AUD_STR,
1303 ainstance, AUD_END);
1309 SKAM_SetFields(struct rx_call *call,
1314 afs_int32 alifetime,
1315 afs_int32 amaxAssociates,
1316 afs_uint32 misc_auth_bytes, /* 4 bytes, each 0 means unspecified */
1322 kamSetFields(call, aname, ainstance, aflags, aexpiration, alifetime,
1323 amaxAssociates, misc_auth_bytes, spare2);
1324 osi_auditU(call, AFS_KAM_SetFldEvent, code, AUD_STR, aname, AUD_STR,
1325 ainstance, AUD_LONG, aflags, AUD_DATE, aexpiration, AUD_LONG,
1326 alifetime, AUD_LONG, amaxAssociates, AUD_END);
1331 kamSetFields(struct rx_call *call,
1336 afs_int32 alifetime,
1337 afs_int32 amaxAssociates,
1338 afs_uint32 misc_auth_bytes, /* 4 bytes, each 0 means unspecified */
1343 struct ubik_trans *tt;
1345 afs_int32 tentry_offset; /* offset of entry */
1346 struct kaentry tentry;
1347 unsigned char newvals[4];
1349 COUNT_REQ(SetFields);
1352 return KABADARGUMENT; /* not supported yet... */
1354 /* make sure we're supposed to do something */
1355 if (!(aflags || aexpiration || alifetime || (amaxAssociates >= 0)
1357 || ((aflags & ~KAFNORMAL) & ~KAF_SETTABLE_FLAGS))
1358 return KABADARGUMENT; /* arguments no good */
1359 if (!name_instance_legal(aname, ainstance))
1361 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
1363 code = check_auth(call, tt, 1, &caller);
1368 code = FindBlock(tt, aname, ainstance, &tentry_offset, &tentry);
1371 if (tentry_offset == 0) { /* no such user */
1375 if ((ntohl(tentry.flags) & KAFNORMAL) == 0)
1376 return KAINTERNALERROR;
1378 /* Keep track of the total number of admin accounts. This way we can
1379 * update database without any admin privilege initially */
1380 if ((aflags & KAFADMIN) != (ntohl(tentry.flags) & KAFADMIN)) {
1381 /* if admin state is changing */
1383 if (ntohl(tentry.flags) & KAFADMIN)
1387 if ((code = update_admin_count(tt, delta)))
1391 htonl((ntohl(tentry.flags) & ~KAF_SETTABLE_FLAGS) | aflags);
1393 if ((code = get_time(&now, tt, 1)))
1396 tentry.user_expiration = htonl(aexpiration);
1397 if (!ntohl(tentry.change_password_time)) {
1398 tentry.change_password_time = htonl(now);
1402 tentry.max_ticket_lifetime = htonl(alifetime);
1404 #ifndef NOPWCONTROLS
1406 * We've packed a bunch of bytes into a long for backward compatibility.
1407 * These include password expiration time, and some failed login limits
1408 * counters. Now let's unpack them and stick them into the
1409 * kaentry struct. All the bytes have values in the range
1410 * 1..255, else they were not specified in the interface, and are
1412 * In the case of password expiration times, 1 means password never
1413 * expires (==>0), 2 means password only lives for one day (==>1),
1416 if (misc_auth_bytes) {
1417 unpack_long(misc_auth_bytes, newvals);
1418 if (newvals[EXPIRES]) {
1419 tentry.misc_auth_bytes[EXPIRES] = newvals[EXPIRES] - 1;
1422 if (newvals[REUSEFLAGS]) {
1423 if (newvals[REUSEFLAGS] & KA_REUSEPW)
1424 memset(tentry.pwsums, 0, KA_NPWSUMS);
1425 else if ((newvals[REUSEFLAGS] & KA_NOREUSEPW)
1426 && !tentry.pwsums[0])
1427 tentry.pwsums[0] = 0xff;
1430 if (newvals[ATTEMPTS]) {
1431 tentry.misc_auth_bytes[ATTEMPTS] = newvals[ATTEMPTS] - 1;
1433 if (newvals[LOCKTIME]) {
1434 tentry.misc_auth_bytes[LOCKTIME] = newvals[LOCKTIME] - 1;
1437 tentry.misc_auth_bytes = htonl(tentry.misc_auth_bytes);
1440 #endif /* NOPWCONTROLS */
1442 if (amaxAssociates >= 0) {
1443 if ((ntohl(tentry.flags) & KAFASSOC)
1444 || (ntohl(tentry.flags) & KAFSPECIAL))
1446 if (((ntohl(tentry.flags) & KAFASSOCROOT) == 0) && (amaxAssociates > 0)) /* convert normal user to assoc root */
1447 tentry.flags = htonl(ntohl(tentry.flags) | KAFASSOCROOT);
1448 tentry.misc.assocRoot.maxAssociates = htonl(amaxAssociates);
1451 tentry.modification_time = htonl(now);
1452 tentry.modification_id = htonl(caller);
1453 code = kawrite(tt, tentry_offset, (char *) &tentry, sizeof(tentry));
1457 code = ubik_EndTrans(tt);
1458 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
1464 ubik_AbortTrans(tt);
1471 SKAM_DeleteUser(struct rx_call *call, char *aname, char *ainstance)
1475 code = kamDeleteUser(call, aname, ainstance);
1476 osi_auditU(call, AFS_KAM_DelUserEvent, code, AUD_STR, aname, AUD_STR,
1477 ainstance, AUD_END);
1482 kamDeleteUser(struct rx_call *call, char *aname, char *ainstance)
1485 struct ubik_trans *tt;
1488 struct kaentry tentry;
1489 unsigned int nfailures;
1490 afs_uint32 locktime;
1492 COUNT_REQ(DeleteUser);
1493 if (!name_instance_legal(aname, ainstance))
1495 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
1497 code = check_auth(call, tt, 1, &caller);
1501 ubik_AbortTrans(tt);
1505 code = FindBlock(tt, aname, ainstance, &to, &tentry);
1508 if (to == 0) { /* name not found */
1513 kaux_read(to, &nfailures, &locktime);
1514 if (nfailures || locktime)
1515 kaux_write(to, 0, 0); /* zero failure counters at this offset */
1517 /* track all AuthServer identities */
1518 if (special_name(aname, ainstance))
1519 if ((code = ka_DelKey(tt, to, &tentry)))
1522 if (ntohl(tentry.flags) & KAFADMIN) /* keep admin count up-to-date */
1523 if ((code = update_admin_count(tt, -1)))
1526 if ((code = UnthreadBlock(tt, &tentry)) || (code = FreeBlock(tt, to)) || (code = get_time(0, tt, 1)) /* update randomness */
1530 code = ubik_EndTrans(tt);
1531 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
1536 /* we set a bit in here which indicates that the user's limit of
1537 * authentication failures has been exceeded. If that bit is not set,
1538 * kas can take it on faith that the user ID is not locked. If that
1539 * bit is set, kas has to check all the servers to find one who will
1540 * report that the ID is not locked, or else to find out when the ID
1544 SKAM_GetEntry(struct rx_call *call,
1547 afs_int32 aversion, /* major version assumed by caller */
1548 kaentryinfo *aentry) /* entry data copied here */
1552 code = kamGetEntry(call, aname, ainstance, aversion, aentry);
1553 osi_auditU(call, AFS_KAM_GetEntEvent, code, AUD_STR, aname, AUD_STR,
1554 ainstance, AUD_END);
1559 kamGetEntry(struct rx_call *call,
1562 afs_int32 aversion, /* major version assumed by caller */
1563 kaentryinfo *aentry) /* entry data copied here */
1566 struct ubik_trans *tt;
1567 afs_int32 callerIndex;
1568 struct kaentry caller;
1571 struct kaentry tentry;
1572 rxkad_level enc_level = rxkad_clear;
1573 int callerIsAdmin = 0;
1575 COUNT_REQ(GetEntry);
1576 if (aversion != KAMAJORVERSION)
1577 return KAOLDINTERFACE;
1578 if (!name_instance_legal(aname, ainstance))
1580 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1582 code = check_auth(call, tt, 0, &callerIndex);
1586 if (noAuthenticationRequired) {
1587 } else if (!callerIndex) {
1591 if ((code = karead(tt, callerIndex, (char *)&caller, sizeof(caller)))) {
1595 /* if the user is checking his own entry or ADMIN then go ahead. */
1596 callerIsAdmin = (ntohl(caller.flags) & KAFADMIN);
1598 if (strcmp(caller.userID.name, aname) != 0 && !callerIsAdmin) {
1604 code = FindBlock(tt, aname, ainstance, &to, &tentry);
1607 if (to == 0) { /* entry not found */
1612 get_time(0, 0, 0); /* generate random update */
1614 memset(aentry, 0, sizeof(*aentry));
1615 aentry->minor_version = KAMINORVERSION;
1616 aentry->flags = ntohl(tentry.flags);
1617 aentry->user_expiration = ntohl(tentry.user_expiration);
1618 aentry->modification_time = ntohl(tentry.modification_time);
1619 aentry->change_password_time = ntohl(tentry.change_password_time);
1620 aentry->max_ticket_lifetime = ntohl(tentry.max_ticket_lifetime);
1621 aentry->key_version = ntohl(tentry.key_version);
1623 temp = (unsigned char)tentry.misc_auth_bytes[LOCKTIME];
1625 if (kaux_islocked(to, (u_int) tentry.misc_auth_bytes[ATTEMPTS], temp))
1626 tentry.misc_auth_bytes[REUSEFLAGS] |= KA_ISLOCKED; /* saves an RPC */
1628 temp = pack_long(tentry.misc_auth_bytes);
1629 aentry->misc_auth_bytes = temp;
1631 * only return user's key if security disabled or if admin and
1632 * we have an encrypted connection to the user
1634 rxkad_GetServerInfo(call->conn, &enc_level, 0, 0, 0, 0, 0);
1635 if ((noAuthenticationRequired)
1636 || (callerIsAdmin && enc_level == rxkad_crypt))
1637 memcpy(&aentry->key, &tentry.key, sizeof(struct ktc_encryptionKey));
1639 memset(&aentry->key, 0, sizeof(aentry->key));
1640 code = ka_KeyCheckSum((char *)&tentry.key, &aentry->keyCheckSum);
1641 if (!tentry.pwsums[0] && npwSums > 1 && !tentry.pwsums[1]) {
1642 aentry->reserved3 = 0x12340000;
1644 aentry->reserved3 = 0x12340001;
1647 /* Now get entry of user who last modified this entry */
1648 if (ntohl(tentry.modification_id)) {
1649 temp = ntohl(tentry.modification_id);
1650 code = karead(tt, temp, (char *)&tentry, sizeof(tentry));
1655 aentry->modification_user = tentry.userID;
1657 strcpy(aentry->modification_user.name, "<none>");
1658 strcpy(aentry->modification_user.instance, "\0");
1660 code = ubik_EndTrans(tt);
1665 ubik_AbortTrans(tt);
1670 SKAM_ListEntry(struct rx_call *call,
1671 afs_int32 previous_index, /* last entry ret'd or 0 for first */
1672 afs_int32 *index, /* index of this entry */
1673 afs_int32 *count, /* total entries in database */
1674 kaident *name) /* name & instance of this entry */
1678 code = kamListEntry(call, previous_index, index, count, name);
1679 osi_auditU(call, AFS_KAM_LstEntEvent, code, AUD_LONG, *index, AUD_END);
1685 kamListEntry(struct rx_call *call,
1686 afs_int32 previous_index, /* last entry ret'd or 0 for first */
1687 afs_int32 *index, /* index of this entry */
1688 afs_int32 *count, /* total entries in database */
1689 kaident *name) /* name & instance of this entry */
1692 struct ubik_trans *tt;
1694 struct kaentry tentry;
1696 COUNT_REQ(ListEntry);
1697 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1699 code = check_auth(call, tt, 1, &caller);
1704 *index = NextBlock(tt, previous_index, &tentry, count);
1710 if (*index) { /* return name & inst of this entry */
1711 strncpy(name->name, tentry.userID.name, sizeof(name->name));
1712 strncpy(name->instance, tentry.userID.instance,
1713 sizeof(name->instance));
1715 strcpy(name->name, "\0");
1716 strcpy(name->instance, "\0");
1718 code = ubik_EndTrans(tt);
1723 ubik_AbortTrans(tt);
1728 GetTicket(int version,
1729 struct rx_call *call,
1735 ka_CBS *atimes, /* encrypted start & end time */
1740 struct ubik_trans *tt;
1741 struct ktc_encryptionKey tgskey;
1742 DES_key_schedule schedule;
1744 char name[MAXKTCNAMELEN];
1745 char instance[MAXKTCNAMELEN];
1746 char cell[MAXKTCNAMELEN];
1748 struct kaentry caller;
1749 struct kaentry server;
1750 struct ktc_encryptionKey authSessionKey;
1751 struct ktc_encryptionKey sessionKey;
1753 char ticket[MAXKTCTICKETLEN];
1759 struct ka_getTicketTimes times;
1760 struct ka_getTicketAnswer *answer;
1762 COUNT_REQ(GetTicket);
1763 if (!name_instance_legal(sname, sinstance))
1765 if (atimes->SeqLen != sizeof(times))
1766 return KABADARGUMENT;
1767 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1770 export = import = 0;
1771 if ((strcmp(sname, KA_TGS_NAME) == 0) && (strcmp(sinstance, lrealm) != 0))
1773 if ((strlen(authDomain) > 0) && (strcmp(authDomain, lrealm) != 0))
1776 if (strlen(authDomain) == 0)
1777 authDomain = lrealm;
1778 code = ka_LookupKvno(tt, KA_TGS_NAME, authDomain, kvno, &tgskey);
1783 tkt_DecodeTicket(aticket->SeqBody, aticket->SeqLen, &tgskey, name,
1784 instance, cell, &authSessionKey, &host, &start,
1790 save_principal(tgsPrincipal, name, instance, cell);
1792 if ((code = get_time(&now, 0, 0)))
1795 code = tkt_CheckTimes(start, expiration, now);
1798 code = RXKADEXPIRED;
1803 code = DES_key_sched(ktc_to_cblock(&authSessionKey), &schedule);
1808 celllen = strlen(cell);
1809 if (import && (celllen == 0)) {
1813 if (export && (celllen == 0))
1814 strcpy(cell, lrealm);
1816 if (!krb4_cross && celllen && strcmp(lrealm, cell) != 0) {
1821 DES_ecb_encrypt((DES_cblock *)atimes->SeqBody, (DES_cblock *)×, &schedule, DECRYPT);
1822 times.start = ntohl(times.start);
1823 times.end = ntohl(times.end);
1824 code = tkt_CheckTimes(times.start, times.end, now);
1826 code = KABADREQUEST;
1831 strcpy(caller.userID.name, name);
1832 strcpy(caller.userID.instance, instance);
1833 caller.max_ticket_lifetime = htonl(MAXKTCTICKETLIFETIME);
1834 caller.flags = htonl(KAFNORMAL);
1835 caller.user_expiration = htonl(NEVERDATE);
1837 code = FindBlock(tt, name, instance, &to, &caller);
1841 ka_PrintUserID("GetTicket: User ", name, instance, " unknown.\n");
1847 /* get server's entry */
1848 code = FindBlock(tt, sname, sinstance, &to, &server);
1851 if (to == 0) { /* entry not found */
1852 ka_PrintUserID("GetTicket: Server ", sname, sinstance, " unknown.\n");
1856 save_principal(tgsServerPrincipal, sname, sinstance, 0);
1858 code = DES_new_random_key(ktc_to_cblock(&sessionKey));
1865 GetEndTime(times.start, times.end, expiration, &caller, &server,
1871 tkt_MakeTicket(ticket, &ticketLen, &server.key, caller.userID.name,
1872 caller.userID.instance, cell, times.start, end,
1874 rx_HostOf(rx_PeerOf(rx_ConnectionOf(call))),
1875 server.userID.name, server.userID.instance);
1881 code = KAANSWERTOOLONG;
1882 if (oanswer->MaxSeqLen <
1883 sizeof(struct ka_getTicketAnswer) - 5 * MAXKTCNAMELEN -
1884 MAXKTCTICKETLEN + ticketLen)
1887 answer = (struct ka_getTicketAnswer *)oanswer->SeqBody;
1888 memcpy(&answer->sessionKey, &sessionKey,
1889 sizeof(struct ktc_encryptionKey));
1890 answer->startTime = htonl(times.start);
1891 answer->endTime = htonl(end);
1892 answer->kvno = server.key_version;
1893 answer->ticketLen = htonl(ticketLen);
1896 char *ans = answer->name; /* ptr to variable part of answer */
1899 /* space remaining */
1900 rem = oanswer->MaxSeqLen - (ans - oanswer->SeqBody);
1902 #define putstr(str) len = strlen (str)+1;\
1903 if (rem < len) goto abort;\
1905 ans += len; rem -= len
1912 if (rem < ticketLen)
1914 memcpy(ans, ticket, ticketLen);
1915 oanswer->SeqLen = (ans - oanswer->SeqBody) + ticketLen;
1917 oanswer->SeqLen = round_up_to_ebs(oanswer->SeqLen);
1921 PrepareTicketAnswer(oanswer, /*challenge */ 0, ticket, ticketLen,
1922 &sessionKey, times.start, end, &caller,
1923 &server, cell, KA_GETTICKET_ANS_LABEL);
1928 code = KAINTERNALERROR;
1931 DES_pcbc_encrypt(oanswer->SeqBody, oanswer->SeqBody, oanswer->SeqLen,
1932 &schedule, ktc_to_cblockptr(&authSessionKey), ENCRYPT);
1933 code = ubik_EndTrans(tt);
1934 KALOG(name, instance, sname, sinstance, (import ? authDomain : NULL),
1935 call->conn->peer->host, LOG_GETTICKET);
1940 ubik_AbortTrans(tt);
1945 SKAT_GetTicket_old(struct rx_call *call,
1951 ka_CBS *atimes, /* encrypted start & end time */
1956 sleep(1); /* strongly discourage this */
1958 GetTicket(0, call, kvno, authDomain, aticket, sname, sinstance,
1961 osi_auditU(call, AFS_KAT_GetTicketOEvent, code, AUD_STR, sname, AUD_STR,
1962 sinstance, AUD_END);
1967 SKAT_GetTicket(struct rx_call *call,
1973 ka_CBS *atimes, /* encrypted start & end time */
1979 GetTicket(1, call, kvno, authDomain, aticket, sname, sinstance,
1981 osi_auditU(call, AFS_KAT_GetTicketEvent, code, AUD_STR, sname, AUD_STR,
1982 sinstance, AUD_END);
1987 SKAM_GetStats(struct rx_call *call, afs_int32 version,
1988 afs_int32 *admin_accounts, kasstats *statics,
1993 code = kamGetStats(call, version, admin_accounts, statics, dynamics);
1994 osi_auditU(call, AFS_KAM_GetStatEvent, code, AUD_END);
1999 kamGetStats(struct rx_call *call, afs_int32 version,
2000 afs_int32 *admin_accounts, kasstats *statics,
2004 struct ubik_trans *tt;
2007 COUNT_REQ(GetStats);
2008 if (version != KAMAJORVERSION)
2009 return KAOLDINTERFACE;
2010 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
2012 code = check_auth(call, tt, 1, &caller);
2015 ubik_AbortTrans(tt);
2019 *admin_accounts = ntohl(cheader.admin_accounts);
2020 /* memcpy((char *)statics, (char *)&cheader.stats, sizeof(kasstats)); */
2021 /* these are stored in network byte order and must be copied */
2022 statics->allocs = ntohl(cheader.stats.allocs);
2023 statics->frees = ntohl(cheader.stats.frees);
2024 statics->cpws = ntohl(cheader.stats.cpws);
2025 #if KADBVERSION != 5
2026 check that the statistics command copies all the fields
2028 memcpy((char *)dynamics, (char *)&dynamic_statistics, sizeof(kadstats));
2029 statics->minor_version = KAMINORVERSION;
2030 dynamics->minor_version = KAMINORVERSION;
2036 for (i = 0; i < HASHSIZE; i++)
2037 if (cheader.nameHash[i])
2039 dynamics->hashTableUtilization =
2040 (used * 10000 + HASHSIZE / 2) / HASHSIZE;
2043 #if !defined(AFS_AIX_ENV) && !defined(AFS_HPUX_ENV) && !defined(AFS_NT40_ENV)
2045 /* Unfortunately, although aix_22 has a minimal compatibility
2046 * method of getting to some rusage fields (i.e. stime &
2047 * utime), the version that we have doesn't even have the
2048 * related include files needed for the aix vtimes() call; so
2049 * ignore this for aix till v3.1... */
2050 getrusage(RUSAGE_SELF, &ru);
2051 #if (KAMAJORVERSION>5)
2052 memcpy(&dynamics->utime, &ru.ru_utime, sizeof(struct katimeval));
2053 memcpy(&dynamics->stime, &ru.ru_stime, sizeof(struct katimeval));
2054 dynamics->dataSize = ru.ru_idrss;
2055 dynamics->stackSize = ru.ru_isrss;
2056 dynamics->pageFailts = ru.ru_majflt;
2058 dynamics->string_checks =
2059 (afs_int32) (1000.0 *
2060 ((ru.ru_utime.tv_sec +
2061 ru.ru_utime.tv_usec / 1000000.0) +
2062 (ru.ru_stime.tv_sec +
2063 ru.ru_stime.tv_usec / 1000000.0)));
2065 #endif /* AFS_AIX_ENV && AFS_HPUX_ENV && AFS_NT40_ENV */
2068 code = ubik_EndTrans(tt);
2073 SKAM_GetPassword(struct rx_call *call, char *name, EncryptionKey *password)
2077 code = kamGetPassword(call, name, password);
2078 osi_auditU(call, AFS_KAM_GetPswdEvent, code, AUD_STR, name, AUD_END);
2083 kamGetPassword(struct rx_call *call, char *name, EncryptionKey *password)
2085 int code = KANOAUTH;
2086 AFS_UNUSED COUNT_REQ(GetPassword);
2090 struct ubik_trans *tt;
2091 struct kaentry tentry;
2093 if (!name_instance_legal(name, ""))
2095 /* only requests from this host work */
2096 if (rx_HostOf(rx_PeerOf(rx_ConnectionOf(call))) !=
2097 htonl(INADDR_LOOPBACK))
2099 if (code = InitAuthServ(&tt, LOCKREAD, this_op))
2102 /* this isn't likely to be used because of string to key problems, so since
2103 * this is a temporary thing anyway, we'll use it here. */
2105 extern char udpAuthPrincipal[256];
2107 save_principal(udpAuthPrincipal, name, 0, 0);
2110 get_time(0, 0, 0); /* update random value */
2111 code = FindBlock(tt, name, "", &to, &tentry);
2118 ubik_AbortTrans(tt);
2122 memcpy(password, &tentry.key, sizeof(*password));
2123 code = ubik_EndTrans(tt);
2130 SKAM_GetRandomKey(struct rx_call *call, EncryptionKey *key)
2134 code = kamGetRandomKey(call, key);
2135 osi_auditU(call, AFS_KAM_GetRndKeyEvent, code, AUD_END);
2140 kamGetRandomKey(struct rx_call *call, EncryptionKey *key)
2144 AFS_UNUSED COUNT_REQ(GetRandomKey);
2145 if ((code = AwaitInitialization()))
2147 code = DES_new_random_key(EncryptionKey_to_cblock(key));
2154 SKAM_Debug(struct rx_call *call,
2156 int checkDB, /* start a transaction to examine DB */
2157 struct ka_debugInfo *info)
2161 code = kamDebug(call, version, checkDB, info);
2162 osi_auditU(call, AFS_KAM_DbgEvent, code, AUD_END);
2167 kamDebug(struct rx_call *call,
2169 int checkDB, /* start a transaction to examine DB */
2170 struct ka_debugInfo *info)
2172 /* COUNT_REQ (Debug); */
2173 if (sizeof(struct kaentry) != sizeof(struct kaOldKeys))
2174 return KAINTERNALERROR;
2175 if (sizeof(struct ka_cpwRequest) % 8)
2176 return KAINTERNALERROR;
2177 if (version != KAMAJORVERSION)
2178 return KAOLDINTERFACE;
2180 memset(info, 0, sizeof(*info));
2182 info->minorVersion = KAMINORVERSION;
2183 info->host = dynamic_statistics.host;
2184 info->startTime = dynamic_statistics.start_time;
2186 #if (KAMAJORVERSION>5)
2192 info->noAuth = noAuthenticationRequired;
2194 info->dbVersion = ntohl(cheader.version);
2195 info->dbFreePtr = ntohl(cheader.freePtr);
2196 info->dbEofPtr = ntohl(cheader.eofPtr);
2197 info->dbKvnoPtr = ntohl(cheader.kvnoPtr);
2198 info->dbSpecialKeysVersion = ntohl(cheader.specialKeysVersion);
2200 info->dbHeaderRead = cheaderReadTime;
2201 info->lastTrans = lastTrans;
2203 lastOperation = "(Not Available)";
2204 strncpy(info->lastOperation, lastOperation, sizeof(info->lastOperation));
2205 strncpy(info->lastAuth, authPrincipal, sizeof(info->lastAuth));
2206 strncpy(info->lastTGS, tgsPrincipal, sizeof(info->lastTGS));
2207 strncpy(info->lastAdmin, adminPrincipal, sizeof(info->lastAdmin));
2208 strncpy(info->lastTGSServer, tgsServerPrincipal,
2209 sizeof(info->lastTGSServer));
2211 extern char udpAuthPrincipal[256];
2212 extern char udptgsPrincipal[256];
2213 extern char udptgsServerPrincipal[256];
2215 strncpy(info->lastUAuth, udpAuthPrincipal, sizeof(info->lastUAuth));
2216 strncpy(info->lastUTGS, udptgsPrincipal, sizeof(info->lastUTGS));
2217 strncpy(info->lastUTGSServer, udptgsServerPrincipal,
2218 sizeof(info->lastUTGSServer));
2220 info->nextAutoCPW = nextAutoCPWTime;
2221 info->updatesRemaining = autoCPWUpdates - totalUpdates;
2222 ka_debugKeyCache(info);
2226 /* these are auxiliary routines. They don't do any Ubik stuff. They use
2227 * a tacked-on-the-side data file.
2228 * prob'ly ought to check the noauth flag.
2230 #define ABORTIF(A) {if((code = A)){goto abort;}}
2232 SKAM_Unlock(struct rx_call *call,
2241 struct ubik_trans *tt;
2244 struct kaentry tentry;
2247 if (!name_instance_legal(aname, ainstance)) {
2251 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
2254 ABORTIF(check_auth(call, tt, 1, &caller));
2255 ABORTIF(FindBlock(tt, aname, ainstance, &to, &tentry));
2256 ABORTIF((to == 0 ? KANOENT : 0));
2258 kaux_write(to, 0, 0); /* zero failure counters at this offset */
2260 code = ubik_EndTrans(tt);
2261 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
2267 ubik_AbortTrans(tt);
2270 osi_auditU(call, UnlockEvent, code, AUD_STR, aname, AUD_STR, ainstance,
2276 SKAM_LockStatus(struct rx_call *call,
2279 afs_int32 *lockeduntil,
2286 struct ubik_trans *tt;
2287 afs_int32 callerIndex;
2289 struct kaentry caller;
2290 struct kaentry tentry;
2293 COUNT_REQ(LockStatus);
2295 if (!name_instance_legal(aname, ainstance)) {
2299 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
2302 if ((code = check_auth(call, tt, 0, &callerIndex)))
2305 if (!noAuthenticationRequired && callerIndex) {
2306 if (karead(tt, callerIndex, (char *)&caller, sizeof(caller))) {
2310 /* if the user is checking his own entry or ADMIN then go ahead. */
2311 if ((strcmp(caller.userID.name, aname) != 0)
2312 && !(ntohl(caller.flags) & KAFADMIN)) {
2318 if ((code = FindBlock(tt, aname, ainstance, &to, &tentry)))
2326 temp = (unsigned char)tentry.misc_auth_bytes[LOCKTIME];
2329 kaux_islocked(to, (u_int) tentry.misc_auth_bytes[ATTEMPTS], temp);
2331 code = ubik_EndTrans(tt);
2336 ubik_AbortTrans(tt);
2337 osi_auditU(call, LockStatusEvent, code, AUD_STR, aname, AUD_STR,
2338 ainstance, AUD_END);