4 * Copyright 1990,1991 by the Massachusetts Institute of Technology
5 * For distribution and copying rights, see the file "mit-copyright.h"
8 * Copyright (c) 2005, 2006
9 * The Linux Box Corporation
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15 * Corporation is not used in any advertising or publicity
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17 * without specific, written prior authorization. If the
18 * above copyright notice or any other identification of the
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20 * portion of this software, then the disclaimer below must
23 * This software is provided as is, without representation
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33 * if it has been or is hereafter advised of the possibility of
37 #include <afsconfig.h>
38 #include <afs/param.h>
46 #include <afs/token.h>
49 #if defined(HAVE_ET_COM_ERR_H)
50 #include <et/com_err.h>
55 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
56 #include <afs/com_err.h>
60 #include <sys/ioccom.h>
64 #include <afs/cellconfig.h>
66 #include <afs/venus.h>
67 #include <afs/ptserver.h>
68 #include <afs/ptuser.h>
69 #include <afs/pterror.h>
70 #include <afs/dirpath.h>
71 #include <afs/afsutil.h>
74 #include "linked_list.h"
76 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
79 #ifdef HAVE_KRB5_CREDS_SESSION
80 #define USING_HEIMDAL 1
86 #ifndef AFS_TRY_FULL_PRINC
87 #define AFS_TRY_FULL_PRINC 1
88 #endif /* AFS_TRY_FULL_PRINC */
90 #define AKLOG_TRYAGAIN -1
91 #define AKLOG_SUCCESS 0
93 #define AKLOG_SOMETHINGSWRONG 2
95 #define AKLOG_KERBEROS 4
97 #define AKLOG_BADPATH 6
109 /* RedHat 4.x doesn't seem to define this */
110 #define MAXSYMLINKS 5
113 #define DIR '/' /* Character that divides directories */
114 #define DIRSTRING "/" /* String form of above */
115 #define VOLMARKER ':' /* Character separating cellname from mntpt */
116 #define VOLMARKERSTRING ":" /* String form of above */
120 char realm[REALM_SZ];
123 static krb5_ccache _krb425_ccache = NULL;
126 * Why doesn't AFS provide these prototypes?
129 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
135 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
136 static int isdir(char *, unsigned char *);
137 static krb5_error_code get_credv5(krb5_context context, char *, char *,
138 char *, krb5_creds **);
139 static int get_user_realm(krb5_context, char **);
141 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
142 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
143 x == KRB5KRB_ERR_GENERIC)
145 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
147 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
148 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
149 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
150 #define realm_data(c, p) krb5_princ_realm(c, p)->data
151 #define realm_len(c, p) krb5_princ_realm(c, p)->length
153 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
155 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
156 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
157 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
158 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
159 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
162 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
165 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
166 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
170 krb5_encrypt_tkt_part(krb5_context context,
171 const krb5_keyblock *key,
178 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
180 if ((code = krb5_c_encrypt_length(context, key->enctype,
181 data->length, &enclen)))
183 ticket->enc_part.ciphertext.length = enclen;
184 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
188 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
189 0, data, &ticket->enc_part))) {
190 free(ticket->enc_part.ciphertext.data);
191 ticket->enc_part.ciphertext.data = 0;
203 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
205 #define get_cred_keydata(c) c->keyblock.contents
206 #define get_cred_keylen(c) c->keyblock.length
207 #define get_creds_enctype(c) c->keyblock.enctype
209 #elif defined(HAVE_KRB5_CREDS_SESSION)
211 #define get_cred_keydata(c) c->session.keyvalue.data
212 #define get_cred_keylen(c) c->session.keyvalue.length
213 #define get_creds_enctype(c) c->session.keytype
216 #error "Must have either keyblock or session member of krb5_creds"
219 #ifdef AFS_DARWIN110_ENV
220 #define HAVE_NO_KRB5_524 /* MITKerberosShim logs but returns success */
221 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
222 #define krb5_524_convert_creds krb524_convert_creds_kdc
223 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC)
224 #define HAVE_NO_KRB5_524
228 #define deref_keyblock_enctype(kb) \
231 #define deref_entry_keyblock(entry) \
234 #define deref_session_key(creds) \
237 #define deref_enc_tkt_addrs(tkt) \
240 #define deref_enc_length(enc) \
241 ((enc)->cipher.length)
243 #define deref_enc_data(enc) \
246 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
249 #define deref_keyblock_enctype(kb) \
252 #define deref_entry_keyblock(entry) \
255 #define deref_session_key(creds) \
258 #define deref_enc_tkt_addrs(tkt) \
261 #define deref_enc_length(enc) \
262 ((enc)->ciphertext.length)
264 #define deref_enc_data(enc) \
265 ((enc)->ciphertext.data)
269 #define deref_entry_enctype(entry) \
270 deref_keyblock_enctype(&deref_entry_keyblock(entry))
273 * Provide a replacement for strerror if we don't have it
276 #ifndef HAVE_STRERROR
277 extern char *sys_errlist[];
278 #define strerror(x) sys_errlist[x]
279 #endif /* HAVE_STRERROR */
281 static char *progname = NULL; /* Name of this program */
282 static int dflag = FALSE; /* Give debugging information */
283 static int noauth = FALSE; /* If true, don't try to get tokens */
284 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
285 static int hosts = FALSE; /* Are we keeping track of hosts? */
286 static int noprdb = FALSE; /* Skip resolving name to id? */
287 static int linked = FALSE; /* try for both AFS nodes */
288 static int afssetpag = FALSE; /* setpag for AFS */
289 static int force = FALSE; /* Bash identical tokens? */
290 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
291 static char *keytab = NULL; /* keytab for akimpersonate */
292 static char *client = NULL; /* client principal for akimpersonate */
293 static linked_list zsublist; /* List of zephyr subscriptions */
294 static linked_list hostlist; /* List of host addresses */
295 static linked_list authedcells; /* List of cells already logged to */
297 /* A com_error bodge. The idea here is that this routine lets us lookup
298 * things in the system com_err, if the AFS one just tells us the error
303 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
310 const char *str = afs_error_message(code);
311 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
312 #ifdef HAVE_KRB5_SVC_GET_MSG
313 krb5_svc_get_msg(code,&str);
314 #elif defined(HAVE_ERROR_MESSAGE)
315 str = error_message(code);
317 ; /* IRIX apparently has neither: use the string we have */
322 #ifdef HAVE_KRB5_SVC_GET_MSG
323 krb5_free_string(str);
327 vfprintf(stderr, fmt, ap);
334 afs_dprintf(char *fmt, ...) {
344 copy_cellinfo(cellinfo_t *cellinfo)
346 cellinfo_t *new_cellinfo;
348 if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t))))
349 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
351 return ((char *)new_cellinfo);
356 get_cellconfig(const char *config, char *cell,
357 struct afsconf_cell *cellconfig, char **local_cell)
359 int status = AKLOG_SUCCESS;
360 struct afsconf_dir *configdir;
362 memset(cellconfig, 0, sizeof(*cellconfig));
364 *local_cell = malloc(MAXCELLCHARS);
365 if (*local_cell == NULL) {
366 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
371 if (!(configdir = afsconf_Open(config))) {
373 "%s: can't get afs configuration (afsconf_Open(%s))\n",
378 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
379 fprintf(stderr, "%s: can't determine local cell.\n", progname);
383 if ((cell == NULL) || (cell[0] == 0))
386 /* XXX - This function modifies 'cell' by passing it through lcstring */
387 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
388 fprintf(stderr, "%s: Can't get information about cell %s.\n",
393 afsconf_Close(configdir);
399 extract_realm(krb5_context context, krb5_principal princ) {
403 len = realm_len(context, princ);
404 if (len > REALM_SZ-1)
407 realm = malloc(sizeof(char) * (len+1));
411 strncpy(realm, realm_data(context, princ), len);
418 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
419 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
420 krb5_error_code code;
425 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
429 *realm = extract_realm(context, ticket->server);
433 krb5_free_ticket(context, ticket);
443 * Get a Kerberos service ticket to use as the base of an rxkad token for
447 * An initialized Kerberos v5 context
449 * The realm to look in for the service principal. If NULL, then the
450 * realm is determined from the cell name or the user's credentials
451 * (see below for the heuristics used)
453 * The cell information for the cell to obtain a ticket for
455 * A Kerberos credentials structure containing the ticket acquired
456 * for the cell. This is a dynamically allocated structure, which
457 * should be freed by using the appropriate Kerberos API function.
458 * @param[out] realmUsed
459 * The realm in which the cell's service principal was located. If
460 * unset, then the principal was located in the same realm as the
461 * current user. This is a malloc'd string which should be freed
465 * 0 on success, an error value upon failure
468 * This code tries principals in the following, much debated,
471 * If the realm is specified on the command line we do
472 * - afs/cell@COMMAND-LINE-REALM
473 * - afs@COMMAND-LINE-REALM
476 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
477 * - afs/cell@krb5_get_host_realm(db-server)
478 * Then, if krb5_get_host_realm(db-server) is non-empty
479 * - afs@ krb5_get_host_realm(db-server)
481 * - afs/cell@ upper-case-domain-of-db-server
482 * - afs@ upper-case-domain-of-db-server
484 * In all cases, the 'afs@' variant is only tried where the
485 * cell and the realm match case-insensitively.
489 rxkad_get_ticket(krb5_context context, char *realm,
490 struct afsconf_cell *cell,
491 krb5_creds **v5cred, char **realmUsed) {
492 char *realm_of_cell = NULL;
493 char *realm_of_user = NULL;
494 char *realm_from_princ = NULL;
500 if ((status = get_user_realm(context, &realm_of_user))) {
501 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
502 afs_com_err(progname, status, " while getting realm");
503 status = AKLOG_KERBEROS;
510 /* Cell on command line - use that one */
511 if (realm && realm[0]) {
512 realm_of_cell = realm;
513 status = AKLOG_TRYAGAIN;
514 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
516 /* Initially, try using afs/cell@USERREALM */
517 afs_dprintf("Trying to authenticate to user's realm %s.\n",
519 realm_of_cell = realm_of_user;
520 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
523 /* If that failed, try to determine the realm from the name of
524 * one of the DB servers */
525 if (TRYAGAIN(status)) {
526 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
527 if (!realm_of_cell) {
528 fprintf(stderr, "%s: Couldn't figure out realm for cell "
529 "%s.\n", progname, cell->name);
533 if (realm_of_cell[0])
534 afs_dprintf("We've deduced that we need to authenticate"
535 " to realm %s.\n", realm_of_cell);
537 afs_dprintf("We've deduced that we need to authenticate "
538 "using referrals.\n");
542 if (TRYAGAIN(status)) {
543 /* If we've got the full-princ-first option, or we're in a
544 * different realm from the cell - use the cell name as the
546 if (AFS_TRY_FULL_PRINC ||
547 strcasecmp(cell->name, realm_of_cell)!=0) {
548 status = get_credv5(context, AFSKEY, cell->name,
549 realm_of_cell, v5cred);
551 /* If we failed & we've got an empty realm, then try
552 * calling afs_realm_for_cell again. */
553 if (TRYAGAIN(status) && !realm_of_cell[0]) {
554 /* This time, get the realm by taking the domain
555 * component of the db server and make it upper case */
556 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
557 if (!realm_of_cell) {
559 "%s: Couldn't figure out realm for cell %s.\n",
560 progname, cell->name);
563 afs_dprintf("We've deduced that we need to authenticate"
564 " to realm %s.\n", realm_of_cell);
566 status = get_credv5(context, AFSKEY, cell->name,
567 realm_of_cell, v5cred);
570 /* If the realm and cell name match, then try without an
571 * instance, but only if realm is non-empty */
573 if (TRYAGAIN(status) &&
574 strcasecmp(cell->name, realm_of_cell) == 0) {
575 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
577 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
578 status = get_credv5(context, AFSKEY, cell->name,
579 realm_of_cell, v5cred);
584 /* Try to find a service principal for this cell.
585 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
586 * the first attempt, so we try twice to be sure */
588 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
595 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
596 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
597 progname, cell->name);
598 afs_com_err(progname, status, "while getting AFS tickets");
599 #ifdef KRB5_CC_NOT_KTYPE
600 if (status == KRB5_CC_NOT_KTYPE) {
601 fprintf(stderr, "allow_weak_enctypes may be required in the Kerberos configuration\n");
604 status = AKLOG_KERBEROS;
608 /* If we've got a valid ticket, and we still don't know the realm name
609 * try to figure it out from the contents of the ticket
611 if (strcmp(realm_of_cell, "") == 0) {
612 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
615 "%s: Couldn't decode ticket to determine realm for "
617 progname, cell->name);
619 if (realm_from_princ)
620 realm_of_cell = realm_from_princ;
624 /* If the realm of the user and cell differ, then we need to use the
625 * realm when we later construct the user's principal */
626 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
627 *realmUsed = realm_of_user;
630 if (realm_from_princ)
631 free(realm_from_princ);
632 if (realm_of_user && *realmUsed == NULL)
639 * Build an rxkad token from a Kerberos ticket, using only local tools (that
640 * is, without using a 524 conversion service)
643 * An initialised Kerberos 5 context
645 * A Kerberos credentials structure containing a suitable service ticket
646 * @param[out] tokenPtr
647 * An AFS token structure containing an rxkad token. This is a malloc'd
648 * structure which should be freed by the caller.
649 * @param[out[ userPtr
650 * A string containing the principal of the user to whom the token was
651 * issued. This is a malloc'd block which should be freed by the caller.
654 * 0 on success, an error value upon failure
657 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
658 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
659 char username[BUFSIZ];
660 struct ktc_tokenUnion *token;
661 struct token_rxkad *rxkadToken;
662 #ifdef HAVE_NO_KRB5_524
667 char k4name[ANAME_SZ];
668 char k4inst[INST_SZ];
669 char k4realm[REALM_SZ];
672 afs_dprintf("Using Kerberos V5 ticket natively\n");
677 #ifndef HAVE_NO_KRB5_524
678 status = krb5_524_conv_principal (context, v5cred->client,
683 afs_com_err(progname, status, "while converting principal "
684 "to Kerberos V4 format");
685 return AKLOG_KERBEROS;
687 strcpy (username, k4name);
689 strcat (username, ".");
690 strcat (username, k4inst);
693 len = min(get_princ_len(context, v5cred->client, 0),
694 second_comp(context, v5cred->client) ?
695 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
696 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
697 username[len] = '\0';
699 if (second_comp(context, v5cred->client)) {
700 strcat(username, ".");
701 p = username + strlen(username);
702 len = min(get_princ_len(context, v5cred->client, 1),
703 MAXKTCNAMELEN - strlen(username) - 1);
704 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
709 token = malloc(sizeof(struct ktc_tokenUnion));
713 memset(token, 0, sizeof(struct ktc_tokenUnion));
715 token->at_type = AFSTOKEN_UNION_KAD;
716 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
718 rxkadToken->rk_kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
719 rxkadToken->rk_begintime = v5cred->times.starttime;;
720 rxkadToken->rk_endtime = v5cred->times.endtime;
721 memcpy(&rxkadToken->rk_key, get_cred_keydata(v5cred),
722 get_cred_keylen(v5cred));
723 rxkadToken->rk_ticket.rk_ticket_len = v5cred->ticket.length;
724 rxkadToken->rk_ticket.rk_ticket_val = malloc(v5cred->ticket.length);
725 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
729 memcpy(rxkadToken->rk_ticket.rk_ticket_val, v5cred->ticket.data,
730 rxkadToken->rk_ticket.rk_ticket_len);
733 *userPtr = strdup(username);
739 * Convert a Keberos ticket to an rxkad token, using information obtained
740 * from an external Kerberos 5->4 conversion service. If the code is built
741 * with HAVE_NO_KRB5_524 then this is a stub function which will always
742 * return success without a token.
745 * An initialised Kerberos 5 context
747 * A Kerberos credentials structure containing a suitable service ticket
748 * @param[out] tokenPtr
749 * An AFS token structure containing an rxkad token. This is a malloc'd
750 * structure which should be freed by the caller.
751 * @param[out[ userPtr
752 * A string containing the principal of the user to whom the token was
753 * issued. This is a malloc'd block which should be freed by the caller.
756 * 0 on success, an error value upon failure
759 #ifdef HAVE_NO_KRB5_524
761 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
762 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
770 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
771 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
773 char username[BUFSIZ];
774 struct ktc_tokenUnion *token;
775 struct token_rxkad *rxkadToken;
781 afs_dprintf("Using Kerberos 524 translator service\n");
783 status = krb5_524_convert_creds(context, v5cred, &cred);
786 afs_com_err(progname, status, "while converting tickets "
787 "to Kerberos V4 format");
788 return AKLOG_KERBEROS;
791 strcpy (username, cred.pname);
793 strcat (username, ".");
794 strcat (username, cred.pinst);
797 token = malloc(sizeof(struct ktc_tokenUnion));
800 memset(token, 0, sizeof(struct ktc_tokenUnion));
802 token->at_type = AFSTOKEN_UNION_KAD;
804 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
805 rxkadToken->rk_kvno = cred.kvno;
806 rxkadToken->rk_begintime = cred.issue_date;
808 * It seems silly to go through a bunch of contortions to
809 * extract the expiration time, when the v5 credentials already
810 * has the exact time! Let's use that instead.
812 * Note that this isn't a security hole, as the expiration time
813 * is also contained in the encrypted token
815 rxkadToken->rk_endtime = v5cred->times.endtime;
816 memcpy(&rxkadToken->rk_key, cred.session, 8);
817 rxkadToken->rk_ticket.rk_ticket_len = cred.ticket_st.length;
818 rxkadToken->rk_ticket.rk_ticket_val = malloc(cred.ticket_st.length);
819 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
823 memcpy(rxkadToken->rk_ticket.rk_ticket_val, cred.ticket_st.dat,
824 rxkadToken->rk_ticket.rk_ticket_len);
827 *userPtr = strdup(username);
834 * This function gets an rxkad token for a given cell.
837 * An initialized Kerberos v5 context
839 * The cell information for the cell which we're obtaining a token for
841 * The realm to look in for the service principal. If NULL, then the
842 * realm is determined from the cell name or the user's credentials
843 * (see the documentation for rxkad_get_ticket)
845 * The rxkad token produced. This is a malloc'd structure which should
846 * be freed by the caller.
847 * @parma[out] authuser
848 * A string containing the principal of the user to whom the token was
849 * issued. This is a malloc'd block which should be freed by the caller.
850 * @param[out] foreign
851 * Whether the user is considered as 'foreign' to the realm of the cell.
854 * 0 on success, an error value upon failuer
857 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
858 struct ktc_tokenUnion **token, char **authuser, int *foreign) {
860 char *realmUsed = NULL;
861 char *username = NULL;
869 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
874 status = rxkad_get_converted_token(context, v5cred, token, &username);
876 status = rxkad_build_native_token(context, v5cred, token, &username);
881 /* We now have the username, plus the realm name, so stitch them together
882 * to give us the name that the ptserver will know the user by */
883 if (realmUsed == NULL) {
884 *authuser = username;
888 len = strlen(username)+strlen(realmUsed)+2;
889 *authuser = malloc(len);
890 snprintf(*authuser, len, "%s@%s", username, realmUsed);
904 * Log to a cell. If the cell has already been logged to, return without
905 * doing anything. Otherwise, log to it and mark that it has been logged
909 auth_to_cell(krb5_context context, const char *config,
910 char *cell, char *realm, char **linkedcell)
912 int status = AKLOG_SUCCESS;
914 char *username = NULL; /* To hold client username structure */
915 afs_int32 viceId; /* AFS uid of user */
917 char *local_cell = NULL;
918 struct ktc_tokenUnion *rxkadToken = NULL;
919 struct ktc_setTokenData *token;
920 struct ktc_setTokenData *btoken = NULL;
921 struct afsconf_cell cellconf;
923 /* NULL or empty cell returns information on local cell */
924 if ((status = get_cellconfig(config, cell, &cellconf, &local_cell)))
927 if (linkedcell != NULL) {
928 if (cellconf.linkedCell != NULL) {
929 *linkedcell = strdup(cellconf.linkedCell);
930 if (*linkedcell == NULL) {
939 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
940 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
941 status = AKLOG_SUCCESS;
946 * Record that we have attempted to log to this cell. We do this
947 * before we try rather than after so that we will not try
948 * and fail repeatedly for one cell.
950 ll_string(&authedcells, ll_s_add, cellconf.name);
953 * Record this cell in the list of zephyr subscriptions. We may
954 * want zephyr subscriptions even if authentication fails.
955 * If this is done after we attempt to get tokens, aklog -zsubs
956 * can return something different depending on whether or not we
957 * are in -noauth mode.
959 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
961 "%s: failure adding cell %s to zephyr subscriptions list.\n",
962 progname, cellconf.name);
965 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
967 "%s: failure adding cell %s to zephyr subscriptions list.\n",
968 progname, local_cell);
973 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
974 cellconf.hostName[0]);
976 token = token_buildTokenJar(cellconf.name);
982 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
983 &username, &isForeign);
987 /* We need to keep the token structure around so that we can stick
988 * the viceId into it (once we know it) */
989 status = token_addToken(token, rxkadToken);
991 afs_dprintf("Add Token failed with %d", status);
996 ktc_GetTokenEx(cellconf.name, &btoken) == 0 &&
997 token_SetsEquivalent(token, btoken)) {
999 token_FreeSet(&btoken);
1000 afs_dprintf("Identical tokens already exist; skipping.\n");
1001 status = AKLOG_SUCCESS;
1006 token_FreeSet(&btoken);
1013 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1016 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1019 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1020 status = pr_SNameToId (username, &viceId);
1023 afs_dprintf("Error %d\n", status);
1025 afs_dprintf("Id %d\n", (int) viceId);
1029 * This code is taken from cklog -- it lets people
1030 * automatically register with the ptserver in foreign cells
1033 #ifdef ALLOW_REGISTER
1034 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1035 afs_dprintf("doing first-time registration of %s at %s\n",
1036 username, cellconf.name);
1039 status = ktc_SetTokenEx(token);
1041 afs_com_err(progname, status,
1042 "while obtaining tokens for cell %s",
1044 status = AKLOG_TOKEN;
1048 * In case you're wondering, we don't need to change the
1049 * filename here because we're still connecting to the
1050 * same cell -- we're just using a different authenticat ion
1054 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1056 printf("Error %d\n", status);
1059 if ((status = pr_CreateUser(username, &viceId))) {
1060 fprintf(stderr, "%s: %s so unable to create remote PTS "
1061 "user %s in cell %s (status: %d).\n", progname,
1062 afs_error_message(status), username, cellconf.name,
1064 viceId = ANONYMOUSID;
1066 printf("created cross-cell entry for %s (Id %d) at %s\n",
1067 username, viceId, cellconf.name);
1070 #endif /* ALLOW_REGISTER */
1072 if ((status == 0) && (viceId != ANONYMOUSID)) {
1073 rxkadToken->ktc_tokenUnion_u.at_kad.rk_viceid = viceId;
1074 token_replaceToken(token, rxkadToken);
1078 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1080 #ifndef AFS_AIX51_ENV
1081 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1082 * this routine, it will not add the token. It is not clear what
1083 * is going on here! So we will do the following operation.
1084 * On AIX 5, it causes the parent program to die, so we won't.
1086 write(2,"",0); /* dummy write */
1088 token_setPag(token, afssetpag);
1089 status = ktc_SetTokenEx(token);
1091 afs_com_err(progname, status, "while setting tokens for cell %s",
1093 status = AKLOG_TOKEN;
1097 afs_dprintf("Noauth mode; not authenticating.\n");
1101 free(rxkadToken->ktc_tokenUnion_u.at_kad.rk_ticket.rk_ticket_val);
1114 get_afs_mountpoint(char *file, char *mountpoint, int size)
1117 char V ='V'; /* AFS has problem on Sun with pioctl */
1119 char our_file[MAXPATHLEN + 1];
1121 char *last_component;
1122 struct ViceIoctl vio;
1123 char cellname[BUFSIZ];
1125 memset(our_file, 0, sizeof(our_file));
1126 strcpy(our_file, file);
1128 if ((last_component = strrchr(our_file, DIR))) {
1129 *last_component++ = 0;
1130 parent_dir = our_file;
1133 last_component = our_file;
1137 memset(cellname, 0, sizeof(cellname));
1139 vio.in = last_component;
1140 vio.in_size = strlen(last_component)+1;
1141 vio.out_size = size;
1142 vio.out = mountpoint;
1144 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1145 if (strchr(mountpoint, VOLMARKER) == NULL) {
1147 vio.in_size = strlen(file) + 1;
1148 vio.out_size = sizeof(cellname);
1151 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1152 strcat(cellname, VOLMARKERSTRING);
1153 strcat(cellname, mountpoint + 1);
1154 memset(mountpoint + 1, 0, size - 1);
1155 strcpy(mountpoint + 1, cellname);
1165 * This routine each time it is called returns the next directory
1166 * down a pathname. It resolves all symbolic links. The first time
1167 * it is called, it should be called with the name of the path
1168 * to be descended. After that, it should be called with the arguemnt
1172 next_path(char *origpath)
1174 static char path[MAXPATHLEN + 1];
1175 static char pathtocheck[MAXPATHLEN + 1];
1177 int link = FALSE; /* Is this a symbolic link? */
1178 char linkbuf[MAXPATHLEN + 1];
1179 char tmpbuf[MAXPATHLEN + 1];
1181 static char *last_comp; /* last component of directory name */
1182 static char *elast_comp; /* End of last component */
1186 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1188 /* If we are given something for origpath, we are initializing only. */
1190 memset(path, 0, sizeof(path));
1191 memset(pathtocheck, 0, sizeof(pathtocheck));
1192 strcpy(path, origpath);
1198 /* We were not given origpath; find then next path to check */
1200 /* If we've gotten all the way through already, return NULL */
1201 if (last_comp == NULL)
1205 while (*last_comp == DIR)
1206 strncat(pathtocheck, last_comp++, 1);
1207 len = (elast_comp = strchr(last_comp, DIR))
1208 ? elast_comp - last_comp : strlen(last_comp);
1209 strncat(pathtocheck, last_comp, len);
1210 memset(linkbuf, 0, sizeof(linkbuf));
1211 if ((link = (readlink(pathtocheck, linkbuf,
1212 sizeof(linkbuf)) > 0))) {
1213 if (++symlinkcount > MAXSYMLINKS) {
1214 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1215 exit(AKLOG_BADPATH);
1217 memset(tmpbuf, 0, sizeof(tmpbuf));
1219 strcpy(tmpbuf, elast_comp);
1220 if (linkbuf[0] == DIR) {
1222 * If this is a symbolic link to an absolute path,
1223 * replace what we have by the absolute path.
1225 memset(path, 0, strlen(path));
1226 memcpy(path, linkbuf, sizeof(linkbuf));
1227 strcat(path, tmpbuf);
1230 memset(pathtocheck, 0, sizeof(pathtocheck));
1234 * If this is a symbolic link to a relative path,
1235 * replace only the last component with the link name.
1237 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1238 strcat(path, tmpbuf);
1240 if ((t = strrchr(pathtocheck, DIR))) {
1242 memset(t, 0, strlen(t));
1245 memset(pathtocheck, 0, sizeof(pathtocheck));
1249 last_comp = elast_comp;
1253 return(pathtocheck);
1257 add_hosts(char *file)
1260 char V = 'V'; /* AFS has problem on SunOS */
1262 struct ViceIoctl vio;
1263 char outbuf[BUFSIZ];
1269 memset(outbuf, 0, sizeof(outbuf));
1271 vio.out_size = sizeof(outbuf);
1275 afs_dprintf("Getting list of hosts for %s\n", file);
1277 /* Don't worry about errors. */
1278 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1279 phosts = (long *) outbuf;
1282 * Lists hosts that we care about. If ALLHOSTS is defined,
1283 * then all hosts that you ever may possible go through are
1284 * included in this list. If not, then only hosts that are
1285 * the only ones appear. That is, if a volume you must use
1286 * is replaced on only one server, that server is included.
1287 * If it is replicated on many servers, then none are included.
1288 * This is not perfect, but the result is that people don't
1289 * get subscribed to a lot of instances of FILSRV that they
1290 * probably won't need which reduces the instances of
1291 * people getting messages that don't apply to them.
1294 if (phosts[1] != '\0')
1297 for (i = 0; phosts[i]; i++) {
1299 in.s_addr = phosts[i];
1300 afs_dprintf("Got host %s\n", inet_ntoa(in));
1301 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1303 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1304 afs_dprintf("Got host %s\n", hp->h_name);
1305 ll_string(&zsublist, ll_s_add, hp->h_name);
1312 * This routine descends through a path to a directory, logging to
1313 * every cell it encounters along the way.
1316 auth_to_path(krb5_context context, const char *config, char *path)
1318 int status = AKLOG_SUCCESS;
1319 int auth_status = AKLOG_SUCCESS;
1322 char pathtocheck[MAXPATHLEN + 1];
1323 char mountpoint[MAXPATHLEN + 1];
1332 strcpy(pathtocheck, path);
1334 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1335 fprintf(stderr, "Unable to find current working directory:\n");
1336 fprintf(stderr, "%s\n", pathtocheck);
1337 fprintf(stderr, "Try an absolute pathname.\n");
1338 exit(AKLOG_BADPATH);
1341 strcat(pathtocheck, DIRSTRING);
1342 strcat(pathtocheck, path);
1345 next_path(pathtocheck);
1347 /* Go on to the next level down the path */
1348 while ((nextpath = next_path(NULL))) {
1349 strcpy(pathtocheck, nextpath);
1350 afs_dprintf("Checking directory %s\n", pathtocheck);
1352 * If this is an afs mountpoint, determine what cell from
1353 * the mountpoint name which is of the form
1354 * #cellname:volumename or %cellname:volumename.
1356 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1357 /* skip over the '#' or '%' */
1358 cell = mountpoint + 1;
1359 /* Add this (cell:volumename) to the list of zsubs */
1361 ll_string(&zsublist, ll_s_add, cell);
1363 add_hosts(pathtocheck);
1364 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1366 auth_status = auth_to_cell(context, config, cell, NULL, NULL);
1368 if (status == AKLOG_SUCCESS)
1369 status = auth_status;
1370 else if (status != auth_status)
1371 status = AKLOG_SOMETHINGSWRONG;
1376 if (isdir(pathtocheck, &isdirectory) < 0) {
1378 * If we've logged and still can't stat, there's
1381 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1382 pathtocheck, strerror(errno));
1383 return(AKLOG_BADPATH);
1385 else if (! isdirectory) {
1386 /* Allow only directories */
1387 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1389 return(AKLOG_BADPATH);
1399 /* Print usage message and exit */
1403 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1404 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1405 "[[-p | -path] pathname]\n",
1406 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1408 #ifndef HAVE_NO_KRB5_524
1412 fprintf(stderr, " -d gives debugging information.\n");
1413 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1414 fprintf(stderr, " pathname is the name of a directory to which ");
1415 fprintf(stderr, "you wish to authenticate.\n");
1416 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1417 fprintf(stderr, " -hosts gives host address information.\n");
1418 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1419 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1420 fprintf(stderr, " -force means replace identical tickets. \n");
1421 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1422 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1423 #ifndef HAVE_NO_KRB5_524
1424 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1426 fprintf(stderr, " No commandline arguments means ");
1427 fprintf(stderr, "authenticate to the local cell.\n");
1428 fprintf(stderr, "\n");
1433 main(int argc, char *argv[])
1435 krb5_context context;
1436 int status = AKLOG_SUCCESS;
1438 int somethingswrong = FALSE;
1440 cellinfo_t cellinfo;
1442 extern char *progname; /* Name of this program */
1444 int cmode = FALSE; /* Cellname mode */
1445 int pmode = FALSE; /* Path name mode */
1447 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1448 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1449 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1451 linked_list cells; /* List of cells to log to */
1452 linked_list paths; /* List of paths to log to */
1455 const char *config = AFSDIR_CLIENT_ETC_DIRPATH;
1457 memset(&cellinfo, 0, sizeof(cellinfo));
1459 memset(realm, 0, sizeof(realm));
1460 memset(cell, 0, sizeof(cell));
1461 memset(path, 0, sizeof(path));
1469 /* Store the program name here for error messages */
1470 if ((progname = strrchr(argv[0], DIR)))
1475 krb5_init_context(&context);
1476 initialize_KTC_error_table ();
1477 initialize_U_error_table();
1478 initialize_RXK_error_table();
1479 initialize_ACFG_error_table();
1480 initialize_PT_error_table();
1481 afs_set_com_err_hook(redirect_errors);
1484 * Enable DES enctypes, which are currently still required for AFS.
1485 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1488 #if defined(HAVE_KRB5_ENCTYPE_ENABLE)
1489 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1491 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1492 #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1493 krb5_allow_weak_crypto(context, 1);
1496 /* Initialize list of cells to which we have authenticated */
1497 ll_init(&authedcells);
1499 /* Parse commandline arguments and make list of what to do. */
1500 for (i = 1; i < argc; i++) {
1501 if (strcmp(argv[i], "-d") == 0)
1503 else if (strcmp(argv[i], "-noauth") == 0)
1505 else if (strcmp(argv[i], "-zsubs") == 0)
1507 else if (strcmp(argv[i], "-hosts") == 0)
1509 else if (strcmp(argv[i], "-noprdb") == 0)
1511 else if (strcmp(argv[i], "-linked") == 0)
1513 else if (strcmp(argv[i], "-force") == 0)
1515 #ifndef HAVE_NO_KRB5_524
1516 else if (strcmp(argv[i], "-524") == 0)
1519 else if (strcmp(argv[i], "-setpag") == 0)
1521 else if (((strcmp(argv[i], "-cell") == 0) ||
1522 (strcmp(argv[i], "-c") == 0)) && !pmode)
1525 strcpy(cell, argv[i]);
1529 else if ((strcmp(argv[i], "-keytab") == 0))
1535 else if ((strcmp(argv[i], "-principal") == 0))
1541 else if (((strcmp(argv[i], "-path") == 0) ||
1542 (strcmp(argv[i], "-p") == 0)) && !cmode)
1545 strcpy(path, argv[i]);
1549 else if (strcmp(argv[i], "-config") == 0)
1555 else if (argv[i][0] == '-')
1557 else if (!pmode && !cmode) {
1558 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1559 (strcmp(argv[i], "..") == 0)) {
1561 strcpy(path, argv[i]);
1565 strcpy(cell, argv[i]);
1572 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1575 strcpy(realm, argv[i]);
1579 /* Add this cell to list of cells */
1580 strcpy(cellinfo.cell, cell);
1581 strcpy(cellinfo.realm, realm);
1582 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1584 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1585 ll_add_data(cur_node, new_cellinfo);
1588 "%s: failure copying cellinfo.\n", progname);
1593 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1597 memset(&cellinfo, 0, sizeof(cellinfo));
1599 memset(cell, 0, sizeof(cell));
1600 memset(realm, 0, sizeof(realm));
1603 /* Add this path to list of paths */
1604 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1606 if ((new_path = strdup(path)))
1607 ll_add_data(cur_node, new_path);
1609 fprintf(stderr, "%s: failure copying path name.\n",
1615 fprintf(stderr, "%s: failure adding path to paths list.\n",
1620 memset(path, 0, sizeof(path));
1624 /* If nothing was given, log to the local cell. */
1625 if ((cells.nelements + paths.nelements) == 0) {
1628 status = auth_to_cell(context, config, NULL, NULL, &linkedcell);
1630 /* If this cell is linked to a DCE cell, and user requested -linked,
1631 * get tokens for both. This is very useful when the AFS cell is
1632 * linked to a DFS cell and this system does not also have DFS.
1635 if (!status && linked && linkedcell != NULL) {
1636 afs_dprintf("Linked cell: %s\n", linkedcell);
1637 status = auth_to_cell(context, config, linkedcell, NULL, NULL);
1645 * Local hack - if the person has a file in their home
1646 * directory called ".xlog", read that for a list of
1647 * extra cells to authenticate to
1650 if ((pwd = getpwuid(getuid())) != NULL) {
1653 char fcell[100], xlog_path[512];
1655 strcpy(xlog_path, pwd->pw_dir);
1656 strcat(xlog_path, "/.xlog");
1658 if ((stat(xlog_path, &sbuf) == 0) &&
1659 ((f = fopen(xlog_path, "r")) != NULL)) {
1661 afs_dprintf("Reading %s for cells to authenticate to.\n",
1664 while (fgets(fcell, 100, f) != NULL) {
1667 fcell[strlen(fcell) - 1] = '\0';
1669 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1671 auth_status = auth_to_cell(context, config, fcell, NULL, NULL);
1672 if (status == AKLOG_SUCCESS)
1673 status = auth_status;
1675 status = AKLOG_SOMETHINGSWRONG;
1681 /* Log to all cells in the cells list first */
1682 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1683 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1684 status = auth_to_cell(context, config, cellinfo.cell,
1685 cellinfo.realm, &linkedcell);
1689 if (linked && linkedcell != NULL) {
1690 afs_dprintf("Linked cell: %s\n", linkedcell);
1691 status = auth_to_cell(context, config, linkedcell,
1692 cellinfo.realm, NULL);
1696 if (linkedcell != NULL) {
1703 /* Then, log to all paths in the paths list */
1704 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1705 status = auth_to_path(context, config, cur_node->data);
1711 * If only one thing was logged to, we'll return the status
1712 * of the single call. Otherwise, we'll return a generic
1713 * something failed status.
1715 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1716 status = AKLOG_SOMETHINGSWRONG;
1719 /* If we are keeping track of zephyr subscriptions, print them. */
1721 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1722 printf("zsub: %s\n", cur_node->data);
1725 /* If we are keeping track of host information, print it. */
1727 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1728 printf("host: %s\n", cur_node->data);
1735 isdir(char *path, unsigned char *val)
1737 struct stat statbuf;
1739 if (lstat(path, &statbuf) < 0)
1742 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1750 static krb5_error_code
1751 get_credv5_akimpersonate(krb5_context context,
1753 krb5_principal service_principal,
1754 krb5_principal client_principal,
1757 int *allowed_enctypes,
1759 krb5_creds** out_creds /* out */ )
1761 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1762 krb5_error_code code;
1764 krb5_kt_cursor cursor[1];
1765 krb5_keytab_entry entry[1];
1767 krb5_creds *creds = 0;
1768 krb5_enctype enctype;
1770 krb5_keyblock session_key[1];
1772 Ticket ticket_reply[1];
1773 EncTicketPart enc_tkt_reply[1];
1774 krb5_address address[30];
1775 krb5_addresses faddr[1];
1777 time_t temp_time[2];
1779 krb5_ticket ticket_reply[1];
1780 krb5_enc_tkt_part enc_tkt_reply[1];
1781 krb5_address address[30], *faddr[30];
1785 static int any_enctype[] = {0};
1787 if (!(creds = malloc(sizeof *creds))) {
1791 if (!allowed_enctypes)
1792 allowed_enctypes = any_enctype;
1795 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1796 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1797 memset((char*)creds, 0, sizeof *creds);
1798 memset((char*)entry, 0, sizeof *entry);
1799 memset((char*)session_key, 0, sizeof *session_key);
1800 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1801 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1802 code = krb5_kt_resolve(context, keytab, &kt);
1805 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1807 afs_com_err(progname, code, "while resolving default keytab");
1811 if (service_principal) {
1812 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1813 code = krb5_kt_get_entry(context,
1820 if (allowed_enctypes[i])
1821 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1826 afs_com_err(progname, code,"while scanning keytab entries");
1830 krb5_keytab_entry new[1];
1832 memset(new, 0, sizeof *new);
1833 if ((code == krb5_kt_start_seq_get(context, kt, cursor))) {
1834 afs_com_err(progname, code, "while starting keytab scan");
1837 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1839 allowed_enctypes[i] && allowed_enctypes[i]
1840 != deref_entry_enctype(new); ++i)
1842 if ((!i || allowed_enctypes[i]) &&
1843 (best < 0 || best > i)) {
1844 krb5_free_keytab_entry_contents(context, entry);
1846 memset(new, 0, sizeof *new);
1847 } else krb5_free_keytab_entry_contents(context, new);
1849 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1850 afs_com_err(progname, i, "while ending keytab scan");
1855 afs_com_err(progname, code, "while scanning keytab");
1858 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1864 if ((code = krb5_generate_random_keyblock(context,
1865 deref_keyblock_enctype(session_key), session_key))) {
1866 afs_com_err(progname, code, "while making session key");
1869 enc_tkt_reply->flags.initial = 1;
1870 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1871 enc_tkt_reply->cname = client_principal->name;
1872 enc_tkt_reply->crealm = client_principal->realm;
1873 enc_tkt_reply->key = *session_key;
1875 static krb5_data empty_string;
1876 enc_tkt_reply->transited.contents = empty_string;
1878 enc_tkt_reply->authtime = starttime;
1879 enc_tkt_reply->starttime = temp_time;
1880 *enc_tkt_reply->starttime = starttime;
1882 enc_tkt_reply->renew_till = temp_time + 1;
1883 *enc_tkt_reply->renew_till = endtime;
1885 enc_tkt_reply->endtime = endtime;
1887 if ((code = krb5_c_make_random_key(context,
1888 deref_keyblock_enctype(session_key), session_key))) {
1889 afs_com_err(progname, code, "while making session key");
1892 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1893 #define DATACAST (unsigned char *)
1894 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1895 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1896 enc_tkt_reply->session = session_key;
1897 enc_tkt_reply->client = client_principal;
1899 static krb5_data empty_string;
1900 enc_tkt_reply->transited.tr_contents = empty_string;
1902 enc_tkt_reply->times.authtime = starttime;
1903 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1904 enc_tkt_reply->times.endtime = endtime;
1905 #endif /* USING_HEIMDAL */
1906 /* NB: We will discard address for now--ignoring caddr field
1907 in any case. MIT branch does what it always did. */
1909 if (paddress && *paddress) {
1910 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1913 faddr->val = address;
1915 for (i = 0; paddress[i]; ++i) {
1917 address[i].addr_type = KRB5_ADDRESS_INET;
1918 address[i].address.data = (void*)(paddress+i);
1919 address[i].address.length = sizeof(paddress[i]);
1922 address[i].magic = KV5M_ADDRESS;
1923 address[i].addrtype = ADDRTYPE_INET;
1925 address[i].addrtype = AF_INET;
1927 address[i].contents = (void*)(paddress+i);
1928 address[i].length = sizeof(int);
1929 faddr[i] = address+i;
1940 ticket_reply->sname = service_principal->name;
1941 ticket_reply->realm = service_principal->realm;
1943 { /* crypto block */
1944 krb5_crypto crypto = 0;
1945 unsigned char *buf = 0;
1946 size_t buf_size, buf_len;
1949 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
1950 enc_tkt_reply, &buf_len, code);
1952 afs_com_err(progname, code, "while encoding ticket");
1956 if(buf_len != buf_size) {
1957 afs_com_err(progname, code,
1958 "%u != %u while encoding ticket (internal ASN.1 encoder error",
1959 (unsigned int)buf_len, (unsigned int)buf_size);
1962 what = "krb5_crypto_init";
1963 code = krb5_crypto_init(context,
1964 &deref_entry_keyblock(entry),
1965 deref_entry_enctype(entry),
1968 what = "krb5_encrypt";
1969 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
1970 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
1973 if (crypto) krb5_crypto_destroy(context, crypto);
1975 afs_com_err(progname, code, "while %s", what);
1978 } /* crypto block */
1979 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
1980 ticket_reply->enc_part.kvno = temp_vno;
1981 *ticket_reply->enc_part.kvno = entry->vno;
1982 ticket_reply->tkt_vno = 5;
1984 ticket_reply->server = service_principal;
1985 ticket_reply->enc_part2 = enc_tkt_reply;
1986 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
1987 afs_com_err(progname, code, "while making ticket");
1990 ticket_reply->enc_part.kvno = entry->vno;
1993 /* Construct Creds */
1995 if ((code = krb5_copy_principal(context, service_principal,
1997 afs_com_err(progname, code, "while copying service principal");
2000 if ((code = krb5_copy_principal(context, client_principal,
2002 afs_com_err(progname, code, "while copying client principal");
2005 if ((code = krb5_copy_keyblock_contents(context, session_key,
2006 &deref_session_key(creds)))) {
2007 afs_com_err(progname, code, "while copying session key");
2012 creds->times.authtime = enc_tkt_reply->authtime;
2013 creds->times.starttime = *(enc_tkt_reply->starttime);
2014 creds->times.endtime = enc_tkt_reply->endtime;
2015 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2016 creds->flags.b = enc_tkt_reply->flags;
2018 creds->times = enc_tkt_reply->times;
2019 creds->ticket_flags = enc_tkt_reply->flags;
2021 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2023 else if ((code = krb5_copy_addresses(context,
2024 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2025 afs_com_err(progname, code, "while copying addresses");
2031 size_t creds_tkt_len;
2032 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2033 ticket_reply, &creds_tkt_len, code);
2035 afs_com_err(progname, code, "while encoding ticket");
2040 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2041 afs_com_err(progname, code, "while encoding ticket");
2044 creds->ticket = *temp;
2051 if (deref_enc_data(&ticket_reply->enc_part))
2052 free(deref_enc_data(&ticket_reply->enc_part));
2053 krb5_free_keytab_entry_contents(context, entry);
2054 if (client_principal)
2055 krb5_free_principal(context, client_principal);
2056 if (service_principal)
2057 krb5_free_principal(context, service_principal);
2059 krb5_cc_close(context, cc);
2061 krb5_kt_close(context, kt);
2062 if (creds) krb5_free_creds(context, creds);
2063 krb5_free_keyblock_contents(context, session_key);
2071 static krb5_error_code
2072 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2077 static krb5_principal client_principal = 0;
2079 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2080 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2082 memset(&increds, 0, sizeof(increds));
2083 /* ANL - instance may be ptr to a null string. Pass null then */
2084 if ((r = krb5_build_principal(context, &increds.server,
2085 strlen(realm), realm,
2087 (inst && strlen(inst)) ? inst : (void *) NULL,
2093 if (!_krb425_ccache) {
2094 r = krb5_cc_default(context, &_krb425_ccache);
2098 if (!client_principal) {
2100 r = krb5_parse_name(context, client, &client_principal);
2102 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2108 increds.client = client_principal;
2109 increds.times.endtime = 0;
2110 /* Ask for DES since that is what V4 understands */
2111 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2114 int allowed_enctypes[] = {
2115 ENCTYPE_DES_CBC_CRC, 0
2118 r = get_credv5_akimpersonate(context,
2127 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2134 get_user_realm(krb5_context context, char **realm)
2136 static krb5_principal client_principal = 0;
2137 krb5_error_code r = 0;
2141 if (!_krb425_ccache) {
2142 r = krb5_cc_default(context, &_krb425_ccache);
2146 if (!client_principal) {
2148 r = krb5_parse_name(context, client, &client_principal);
2150 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2156 *realm = extract_realm(context, client_principal);