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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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>
42 #include <sys/types.h>
57 #include <sys/param.h>
58 #include <sys/errno.h>
60 #include <sys/socket.h>
61 #include <netinet/in.h>
62 #include <arpa/inet.h>
67 #include <afs/token.h>
70 #if defined(HAVE_ET_COM_ERR_H)
71 #include <et/com_err.h>
76 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
77 #include <afs/com_err.h>
80 #include <afs/param.h>
82 #include <sys/ioccom.h>
85 /* Prevent inclusion of des.h to avoid conflicts with des types */
86 #define NO_DES_H_INCLUDE
89 #include <afs/cellconfig.h>
91 #include <afs/venus.h>
92 #include <afs/ptserver.h>
93 #include <afs/ptuser.h>
94 #include <afs/pterror.h>
95 #include <afs/dirpath.h>
96 #include <afs/afsutil.h>
99 #include "linked_list.h"
101 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
104 #ifdef HAVE_KRB5_CREDS_SESSION
105 #define USING_HEIMDAL 1
111 #ifndef AFS_TRY_FULL_PRINC
112 #define AFS_TRY_FULL_PRINC 1
113 #endif /* AFS_TRY_FULL_PRINC */
115 #define AKLOG_TRYAGAIN -1
116 #define AKLOG_SUCCESS 0
117 #define AKLOG_USAGE 1
118 #define AKLOG_SOMETHINGSWRONG 2
120 #define AKLOG_KERBEROS 4
121 #define AKLOG_TOKEN 5
122 #define AKLOG_BADPATH 6
138 /* RedHat 4.x doesn't seem to define this */
139 #define MAXSYMLINKS 5
142 #define DIR '/' /* Character that divides directories */
143 #define DIRSTRING "/" /* String form of above */
144 #define VOLMARKER ':' /* Character separating cellname from mntpt */
145 #define VOLMARKERSTRING ":" /* String form of above */
149 char realm[REALM_SZ];
152 static krb5_ccache _krb425_ccache = NULL;
155 * Why doesn't AFS provide these prototypes?
158 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
164 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
165 static int isdir(char *, unsigned char *);
166 static krb5_error_code get_credv5(krb5_context context, char *, char *,
167 char *, krb5_creds **);
168 static int get_user_realm(krb5_context, char **);
170 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
171 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
172 x == KRB5KRB_ERR_GENERIC)
174 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
176 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
177 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
178 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
179 #define realm_data(c, p) krb5_princ_realm(c, p)->data
180 #define realm_len(c, p) krb5_princ_realm(c, p)->length
182 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
184 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
185 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
186 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
187 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
188 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
191 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
194 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
195 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
199 krb5_encrypt_tkt_part(krb5_context context,
200 const krb5_keyblock *key,
207 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
209 if ((code = krb5_c_encrypt_length(context, key->enctype,
210 data->length, &enclen)))
212 ticket->enc_part.ciphertext.length = enclen;
213 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
217 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
218 0, data, &ticket->enc_part))) {
219 free(ticket->enc_part.ciphertext.data);
220 ticket->enc_part.ciphertext.data = 0;
232 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
234 #define get_cred_keydata(c) c->keyblock.contents
235 #define get_cred_keylen(c) c->keyblock.length
236 #define get_creds_enctype(c) c->keyblock.enctype
238 #elif defined(HAVE_KRB5_CREDS_SESSION)
240 #define get_cred_keydata(c) c->session.keyvalue.data
241 #define get_cred_keylen(c) c->session.keyvalue.length
242 #define get_creds_enctype(c) c->session.keytype
245 #error "Must have either keyblock or session member of krb5_creds"
248 #if !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
249 #define krb5_524_convert_creds krb524_convert_creds_kdc
250 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC)
251 #define HAVE_NO_KRB5_524
255 #define deref_keyblock_enctype(kb) \
258 #define deref_entry_keyblock(entry) \
261 #define deref_session_key(creds) \
264 #define deref_enc_tkt_addrs(tkt) \
267 #define deref_enc_length(enc) \
268 ((enc)->cipher.length)
270 #define deref_enc_data(enc) \
273 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
276 #define deref_keyblock_enctype(kb) \
279 #define deref_entry_keyblock(entry) \
282 #define deref_session_key(creds) \
285 #define deref_enc_tkt_addrs(tkt) \
288 #define deref_enc_length(enc) \
289 ((enc)->ciphertext.length)
291 #define deref_enc_data(enc) \
292 ((enc)->ciphertext.data)
296 #define deref_entry_enctype(entry) \
297 deref_keyblock_enctype(&deref_entry_keyblock(entry))
300 * Provide a replacement for strerror if we don't have it
303 #ifndef HAVE_STRERROR
304 extern char *sys_errlist[];
305 #define strerror(x) sys_errlist[x]
306 #endif /* HAVE_STRERROR */
308 static char *progname = NULL; /* Name of this program */
309 static int dflag = FALSE; /* Give debugging information */
310 static int noauth = FALSE; /* If true, don't try to get tokens */
311 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
312 static int hosts = FALSE; /* Are we keeping track of hosts? */
313 static int noprdb = FALSE; /* Skip resolving name to id? */
314 static int linked = FALSE; /* try for both AFS nodes */
315 static int afssetpag = FALSE; /* setpag for AFS */
316 static int force = FALSE; /* Bash identical tokens? */
317 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
318 static char *keytab = NULL; /* keytab for akimpersonate */
319 static char *client = NULL; /* client principal for akimpersonate */
320 static linked_list zsublist; /* List of zephyr subscriptions */
321 static linked_list hostlist; /* List of host addresses */
322 static linked_list authedcells; /* List of cells already logged to */
324 /* A com_error bodge. The idea here is that this routine lets us lookup
325 * things in the system com_err, if the AFS one just tells us the error
330 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
337 const char *str = afs_error_message(code);
338 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
339 #ifdef HAVE_KRB5_SVC_GET_MSG
340 krb5_svc_get_msg(code,&str);
342 str = error_message(code);
347 #ifdef HAVE_KRB5_SVC_GET_MSG
348 krb5_free_string(str);
352 vfprintf(stderr, fmt, ap);
359 afs_dprintf(char *fmt, ...) {
369 copy_cellinfo(cellinfo_t *cellinfo)
371 cellinfo_t *new_cellinfo;
373 if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t))))
374 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
376 return ((char *)new_cellinfo);
381 get_cellconfig(char *cell, struct afsconf_cell *cellconfig, char **local_cell)
383 int status = AKLOG_SUCCESS;
384 struct afsconf_dir *configdir;
386 memset(cellconfig, 0, sizeof(*cellconfig));
388 *local_cell = malloc(MAXCELLCHARS);
389 if (*local_cell == NULL) {
390 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
395 if (!(configdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH))) {
397 "%s: can't get afs configuration (afsconf_Open(%s))\n",
398 progname, AFSDIR_CLIENT_ETC_DIRPATH);
402 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
403 fprintf(stderr, "%s: can't determine local cell.\n", progname);
407 if ((cell == NULL) || (cell[0] == 0))
410 /* XXX - This function modifies 'cell' by passing it through lcstring */
411 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
412 fprintf(stderr, "%s: Can't get information about cell %s.\n",
417 afsconf_Close(configdir);
423 extract_realm(krb5_context context, krb5_principal princ) {
427 len = realm_len(context, princ);
428 if (len > REALM_SZ-1)
431 realm = malloc(sizeof(char) * (len+1));
435 strncpy(realm, realm_data(context, princ), len);
442 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
443 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
444 krb5_error_code code;
449 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
453 *realm = extract_realm(context, ticket->server);
457 krb5_free_ticket(context, ticket);
467 * Get a Kerberos service ticket to use as the base of an rxkad token for
471 * An initialized Kerberos v5 context
473 * The realm to look in for the service principal. If NULL, then the
474 * realm is determined from the cell name or the user's credentials
475 * (see below for the heuristics used)
477 * The cell information for the cell to obtain a ticket for
479 * A Kerberos credentials structure containing the ticket acquired
480 * for the cell. This is a dynamically allocated structure, which
481 * should be freed by using the appropriate Kerberos API function.
482 * @param[out] realmUsed
483 * The realm in which the cell's service principal was located. If
484 * unset, then the principal was located in the same realm as the
485 * current user. This is a malloc'd string which should be freed
489 * 0 on success, an error value upon failure
492 * This code tries principals in the following, much debated,
495 * If the realm is specified on the command line we do
496 * - afs/cell@COMMAND-LINE-REALM
497 * - afs@COMMAND-LINE-REALM
500 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
501 * - afs/cell@krb5_get_host_realm(db-server)
502 * Then, if krb5_get_host_realm(db-server) is non-empty
503 * - afs@ krb5_get_host_realm(db-server)
505 * - afs/cell@ upper-case-domain-of-db-server
506 * - afs@ upper-case-domain-of-db-server
508 * In all cases, the 'afs@' variant is only tried where the
509 * cell and the realm match case-insensitively.
513 rxkad_get_ticket(krb5_context context, char *realm,
514 struct afsconf_cell *cell,
515 krb5_creds **v5cred, char **realmUsed) {
516 char *realm_of_cell = NULL;
517 char *realm_of_user = NULL;
518 char *realm_from_princ = NULL;
524 if ((status = get_user_realm(context, &realm_of_user))) {
525 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
526 afs_com_err(progname, status, " while getting realm");
527 status = AKLOG_KERBEROS;
534 /* Cell on command line - use that one */
535 if (realm && realm[0]) {
536 realm_of_cell = realm;
537 status = AKLOG_TRYAGAIN;
538 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
540 /* Initially, try using afs/cell@USERREALM */
541 afs_dprintf("Trying to authenticate to user's realm %s.\n",
543 realm_of_cell = realm_of_user;
544 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
547 /* If that failed, try to determine the realm from the name of
548 * one of the DB servers */
549 if (TRYAGAIN(status)) {
550 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
551 if (!realm_of_cell) {
552 fprintf(stderr, "%s: Couldn't figure out realm for cell "
553 "%s.\n", progname, cell->name);
557 if (realm_of_cell[0])
558 afs_dprintf("We've deduced that we need to authenticate"
559 " to realm %s.\n", realm_of_cell);
561 afs_dprintf("We've deduced that we need to authenticate "
562 "using referrals.\n");
566 if (TRYAGAIN(status)) {
567 /* If we've got the full-princ-first option, or we're in a
568 * different realm from the cell - use the cell name as the
570 if (AFS_TRY_FULL_PRINC ||
571 strcasecmp(cell->name, realm_of_cell)!=0) {
572 status = get_credv5(context, AFSKEY, cell->name,
573 realm_of_cell, v5cred);
575 /* If we failed & we've got an empty realm, then try
576 * calling afs_realm_for_cell again. */
577 if (TRYAGAIN(status) && !realm_of_cell[0]) {
578 /* This time, get the realm by taking the domain
579 * component of the db server and make it upper case */
580 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
581 if (!realm_of_cell) {
583 "%s: Couldn't figure out realm for cell %s.\n",
584 progname, cell->name);
587 afs_dprintf("We've deduced that we need to authenticate"
588 " to realm %s.\n", realm_of_cell);
590 status = get_credv5(context, AFSKEY, cell->name,
591 realm_of_cell, v5cred);
594 /* If the realm and cell name match, then try without an
595 * instance, but only if realm is non-empty */
597 if (TRYAGAIN(status) &&
598 strcasecmp(cell->name, realm_of_cell) == 0) {
599 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
601 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
602 status = get_credv5(context, AFSKEY, cell->name,
603 realm_of_cell, v5cred);
608 /* Try to find a service principal for this cell.
609 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
610 * the first attempt, so we try twice to be sure */
612 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
619 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
620 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
621 progname, cell->name);
622 afs_com_err(progname, status, "while getting AFS tickets");
623 status = AKLOG_KERBEROS;
627 /* If we've got a valid ticket, and we still don't know the realm name
628 * try to figure it out from the contents of the ticket
630 if (strcmp(realm_of_cell, "") == 0) {
631 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
634 "%s: Couldn't decode ticket to determine realm for "
636 progname, cell->name);
638 if (realm_from_princ)
639 realm_of_cell = realm_from_princ;
643 /* If the realm of the user and cell differ, then we need to use the
644 * realm when we later construct the user's principal */
645 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
646 *realmUsed = realm_of_user;
649 if (realm_from_princ)
650 free(realm_from_princ);
651 if (realm_of_user && *realmUsed == NULL)
658 * Build an rxkad token from a Kerberos ticket, using only local tools (that
659 * is, without using a 524 conversion service)
662 * An initialised Kerberos 5 context
664 * A Kerberos credentials structure containing a suitable service ticket
665 * @param[out] tokenPtr
666 * An AFS token structure containing an rxkad token. This is a malloc'd
667 * structure which should be freed by the caller.
668 * @param[out[ userPtr
669 * A string containing the principal of the user to whom the token was
670 * issued. This is a malloc'd block which should be freed by the caller.
673 * 0 on success, an error value upon failure
676 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
677 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
678 char username[BUFSIZ];
679 struct ktc_tokenUnion *token;
680 struct token_rxkad *rxkadToken;
681 #ifdef HAVE_NO_KRB5_524
686 char k4name[ANAME_SZ];
687 char k4inst[INST_SZ];
688 char k4realm[REALM_SZ];
691 afs_dprintf("Using Kerberos V5 ticket natively\n");
696 #ifndef HAVE_NO_KRB5_524
697 status = krb5_524_conv_principal (context, v5cred->client,
702 afs_com_err(progname, status, "while converting principal "
703 "to Kerberos V4 format");
704 return AKLOG_KERBEROS;
706 strcpy (username, k4name);
708 strcat (username, ".");
709 strcat (username, k4inst);
712 len = min(get_princ_len(context, v5cred->client, 0),
713 second_comp(context, v5cred->client) ?
714 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
715 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
716 username[len] = '\0';
718 if (second_comp(context, v5cred->client)) {
719 strcat(username, ".");
720 p = username + strlen(username);
721 len = min(get_princ_len(context, v5cred->client, 1),
722 MAXKTCNAMELEN - strlen(username) - 1);
723 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
728 token = malloc(sizeof(struct ktc_tokenUnion));
732 memset(token, 0, sizeof(struct ktc_tokenUnion));
734 token->at_type = AFSTOKEN_UNION_KAD;
735 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
737 rxkadToken->rk_kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
738 rxkadToken->rk_begintime = v5cred->times.starttime;;
739 rxkadToken->rk_endtime = v5cred->times.endtime;
740 memcpy(&rxkadToken->rk_key, get_cred_keydata(v5cred),
741 get_cred_keylen(v5cred));
742 rxkadToken->rk_ticket.rk_ticket_len = v5cred->ticket.length;
743 rxkadToken->rk_ticket.rk_ticket_val = malloc(v5cred->ticket.length);
744 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
748 memcpy(rxkadToken->rk_ticket.rk_ticket_val, v5cred->ticket.data,
749 rxkadToken->rk_ticket.rk_ticket_len);
752 *userPtr = strdup(username);
758 * Convert a Keberos ticket to an rxkad token, using information obtained
759 * from an external Kerberos 5->4 conversion service. If the code is built
760 * with HAVE_NO_KRB5_524 then this is a stub function which will always
761 * return success without a token.
764 * An initialised Kerberos 5 context
766 * A Kerberos credentials structure containing a suitable service ticket
767 * @param[out] tokenPtr
768 * An AFS token structure containing an rxkad token. This is a malloc'd
769 * structure which should be freed by the caller.
770 * @param[out[ userPtr
771 * A string containing the principal of the user to whom the token was
772 * issued. This is a malloc'd block which should be freed by the caller.
775 * 0 on success, an error value upon failure
778 #ifdef HAVE_NO_KRB5_524
780 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
781 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
789 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
790 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
792 char username[BUFSIZ];
793 struct ktc_tokenUnion *token;
794 struct token_rxkad *rxkadToken;
800 afs_dprintf("Using Kerberos 524 translator service\n");
802 status = krb5_524_convert_creds(context, v5cred, &cred);
805 afs_com_err(progname, status, "while converting tickets "
806 "to Kerberos V4 format");
807 return AKLOG_KERBEROS;
810 strcpy (username, cred.pname);
812 strcat (username, ".");
813 strcat (username, cred.pinst);
816 token = malloc(sizeof(struct ktc_tokenUnion));
819 memset(token, 0, sizeof(struct ktc_tokenUnion));
821 token->at_type = AFSTOKEN_UNION_KAD;
823 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
824 rxkadToken->rk_kvno = cred.kvno;
825 rxkadToken->rk_begintime = cred.issue_date;
827 * It seems silly to go through a bunch of contortions to
828 * extract the expiration time, when the v5 credentials already
829 * has the exact time! Let's use that instead.
831 * Note that this isn't a security hole, as the expiration time
832 * is also contained in the encrypted token
834 rxkadToken->rk_endtime = v5cred->times.endtime;
835 memcpy(&rxkadToken->rk_key, cred.session, 8);
836 rxkadToken->rk_ticket.rk_ticket_len = cred.ticket_st.length;
837 rxkadToken->rk_ticket.rk_ticket_val = malloc(cred.ticket_st.length);
838 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
842 memcpy(rxkadToken->rk_ticket.rk_ticket_val, cred.ticket_st.dat,
843 rxkadToken->rk_ticket.rk_ticket_len);
846 *userPtr = strdup(username);
853 * This function gets an rxkad token for a given cell.
856 * An initialized Kerberos v5 context
858 * The cell information for the cell which we're obtaining a token for
860 * The realm to look in for the service principal. If NULL, then the
861 * realm is determined from the cell name or the user's credentials
862 * (see the documentation for rxkad_get_ticket)
864 * The rxkad token produced. This is a malloc'd structure which should
865 * be freed by the caller.
866 * @parma[out] authuser
867 * A string containing the principal of the user to whom the token was
868 * issued. This is a malloc'd block which should be freed by the caller.
869 * @param[out] foreign
870 * Whether the user is considered as 'foreign' to the realm of the cell.
873 * 0 on success, an error value upon failuer
876 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
877 struct ktc_tokenUnion **token, char **authuser, int *foreign) {
879 char *realmUsed = NULL;
880 char *username = NULL;
888 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
893 status = rxkad_get_converted_token(context, v5cred, token, &username);
895 status = rxkad_build_native_token(context, v5cred, token, &username);
900 /* We now have the username, plus the realm name, so stitch them together
901 * to give us the name that the ptserver will know the user by */
902 if (realmUsed == NULL) {
903 *authuser = username;
907 len = strlen(username)+strlen(realmUsed)+2;
908 *authuser = malloc(len);
909 afs_snprintf(*authuser, len, "%s@%s", username, realmUsed);
923 * Get the set of tokens for a given cell out of the cache manager
926 * The cellconf structure for the cell to retrieve tokens for
927 * @param[out] tokenPtr
928 * The tokens held for that cell
931 * 0 on success, otherwise an error code
935 get_kernel_token(struct afsconf_cell *cell, struct ktc_token **tokenPtr) {
936 struct ktc_principal client, server;
937 struct ktc_token *token;
942 strncpy(server.name, AFSKEY, MAXKTCNAMELEN - 1);
943 strncpy(server.instance, AFSINST, MAXKTCNAMELEN - 1);
944 strncpy(server.cell, cell->name, MAXKTCREALMLEN - 1);
946 token = malloc(sizeof(struct ktc_token));
950 memset(token, 0, sizeof(struct ktc_token));
952 ret = ktc_GetToken(&server, token, sizeof(struct ktc_token), &client);
963 * Return true if a pair of tokens are directly equivalent
966 tokens_equal(struct ktc_setTokenData *tokenA, struct ktc_token *tokenB) {
969 return (tokenA != NULL && tokenB != NULL &&
970 tokenA->kvno == tokenB->kvno &&
971 tokenA->ticketLen == tokenB->ticketLen &&
972 !memcmp(&tokenA->sessionKey, &tokenB->sessionKey,
973 sizeof(tokenA->sessionKey)) &&
974 !memcmp(tokenA->ticket, tokenB->ticket, tokenA->ticketLen));
979 * Log to a cell. If the cell has already been logged to, return without
980 * doing anything. Otherwise, log to it and mark that it has been logged
984 auth_to_cell(krb5_context context, char *cell, char *realm, char **linkedcell)
986 int status = AKLOG_SUCCESS;
988 char *username = NULL; /* To hold client username structure */
989 afs_int32 viceId; /* AFS uid of user */
991 char *local_cell = NULL;
992 struct ktc_tokenUnion *rxkadToken = NULL;
993 struct ktc_setTokenData *token;
994 struct ktc_token *btoken;
995 struct afsconf_cell cellconf;
997 /* NULL or empty cell returns information on local cell */
998 if ((status = get_cellconfig(cell, &cellconf, &local_cell)))
1001 if (linkedcell != NULL) {
1002 if (cellconf.linkedCell != NULL) {
1003 *linkedcell = strdup(cellconf.linkedCell);
1004 if (*linkedcell == NULL) {
1013 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
1014 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
1015 status = AKLOG_SUCCESS;
1020 * Record that we have attempted to log to this cell. We do this
1021 * before we try rather than after so that we will not try
1022 * and fail repeatedly for one cell.
1024 ll_string(&authedcells, ll_s_add, cellconf.name);
1027 * Record this cell in the list of zephyr subscriptions. We may
1028 * want zephyr subscriptions even if authentication fails.
1029 * If this is done after we attempt to get tokens, aklog -zsubs
1030 * can return something different depending on whether or not we
1031 * are in -noauth mode.
1033 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
1035 "%s: failure adding cell %s to zephyr subscriptions list.\n",
1036 progname, cellconf.name);
1039 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
1041 "%s: failure adding cell %s to zephyr subscriptions list.\n",
1042 progname, local_cell);
1047 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
1048 cellconf.hostName[0]);
1050 token = token_buildTokenJar(cellconf.name);
1051 if (token == NULL) {
1056 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
1057 &username, &isForeign);
1061 /* We need to keep the token structure around so that we can stick
1062 * the viceId into it (once we know it) */
1063 status = token_addToken(token, rxkadToken);
1065 afs_dprintf("Add Token failed with %d", status);
1070 !get_kernel_token(&cellconf, &btoken) &&
1071 tokens_equal(token, btoken)) {
1072 afs_dprintf("Identical tokens already exist; skipping.\n");
1073 status = AKLOG_SUCCESS;
1082 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1085 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1088 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1089 status = pr_SNameToId (username, &viceId);
1092 afs_dprintf("Error %d\n", status);
1094 afs_dprintf("Id %d\n", (int) viceId);
1098 * This code is taken from cklog -- it lets people
1099 * automatically register with the ptserver in foreign cells
1102 #ifdef ALLOW_REGISTER
1103 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1104 afs_dprintf("doing first-time registration of %s at %s\n",
1105 username, cellconf.name);
1108 status = ktc_SetTokenEx(token);
1110 afs_com_err(progname, status,
1111 "while obtaining tokens for cell %s",
1113 status = AKLOG_TOKEN;
1117 * In case you're wondering, we don't need to change the
1118 * filename here because we're still connecting to the
1119 * same cell -- we're just using a different authenticat ion
1123 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1125 printf("Error %d\n", status);
1128 if ((status = pr_CreateUser(username, &viceId))) {
1129 fprintf(stderr, "%s: %s so unable to create remote PTS "
1130 "user %s in cell %s (status: %d).\n", progname,
1131 afs_error_message(status), username, cellconf.name,
1133 viceId = ANONYMOUSID;
1135 printf("created cross-cell entry for %s (Id %d) at %s\n",
1136 username, viceId, cellconf.name);
1139 #endif /* ALLOW_REGISTER */
1141 if ((status == 0) && (viceId != ANONYMOUSID)) {
1142 rxkadToken->ktc_tokenUnion_u.at_kad.rk_viceid = viceId;
1143 token_replaceToken(token, rxkadToken);
1147 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1149 #ifndef AFS_AIX51_ENV
1150 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1151 * this routine, it will not add the token. It is not clear what
1152 * is going on here! So we will do the following operation.
1153 * On AIX 5, it causes the parent program to die, so we won't.
1155 write(2,"",0); /* dummy write */
1157 token_setPag(token, afssetpag);
1158 status = ktc_SetTokenEx(token);
1160 afs_com_err(progname, status, "while setting tokens for cell %s",
1162 status = AKLOG_TOKEN;
1166 afs_dprintf("Noauth mode; not authenticating.\n");
1170 free(rxkadToken->ktc_tokenUnion_u.at_kad.rk_ticket.rk_ticket_val);
1183 get_afs_mountpoint(char *file, char *mountpoint, int size)
1186 char V ='V'; /* AFS has problem on Sun with pioctl */
1188 char our_file[MAXPATHLEN + 1];
1190 char *last_component;
1191 struct ViceIoctl vio;
1192 char cellname[BUFSIZ];
1194 memset(our_file, 0, sizeof(our_file));
1195 strcpy(our_file, file);
1197 if ((last_component = strrchr(our_file, DIR))) {
1198 *last_component++ = 0;
1199 parent_dir = our_file;
1202 last_component = our_file;
1206 memset(cellname, 0, sizeof(cellname));
1208 vio.in = last_component;
1209 vio.in_size = strlen(last_component)+1;
1210 vio.out_size = size;
1211 vio.out = mountpoint;
1213 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1214 if (strchr(mountpoint, VOLMARKER) == NULL) {
1216 vio.in_size = strlen(file) + 1;
1217 vio.out_size = sizeof(cellname);
1220 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1221 strcat(cellname, VOLMARKERSTRING);
1222 strcat(cellname, mountpoint + 1);
1223 memset(mountpoint + 1, 0, size - 1);
1224 strcpy(mountpoint + 1, cellname);
1234 * This routine each time it is called returns the next directory
1235 * down a pathname. It resolves all symbolic links. The first time
1236 * it is called, it should be called with the name of the path
1237 * to be descended. After that, it should be called with the arguemnt
1241 next_path(char *origpath)
1243 static char path[MAXPATHLEN + 1];
1244 static char pathtocheck[MAXPATHLEN + 1];
1246 int link = FALSE; /* Is this a symbolic link? */
1247 char linkbuf[MAXPATHLEN + 1];
1248 char tmpbuf[MAXPATHLEN + 1];
1250 static char *last_comp; /* last component of directory name */
1251 static char *elast_comp; /* End of last component */
1255 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1257 /* If we are given something for origpath, we are initializing only. */
1259 memset(path, 0, sizeof(path));
1260 memset(pathtocheck, 0, sizeof(pathtocheck));
1261 strcpy(path, origpath);
1267 /* We were not given origpath; find then next path to check */
1269 /* If we've gotten all the way through already, return NULL */
1270 if (last_comp == NULL)
1274 while (*last_comp == DIR)
1275 strncat(pathtocheck, last_comp++, 1);
1276 len = (elast_comp = strchr(last_comp, DIR))
1277 ? elast_comp - last_comp : strlen(last_comp);
1278 strncat(pathtocheck, last_comp, len);
1279 memset(linkbuf, 0, sizeof(linkbuf));
1280 if ((link = (readlink(pathtocheck, linkbuf,
1281 sizeof(linkbuf)) > 0))) {
1282 if (++symlinkcount > MAXSYMLINKS) {
1283 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1284 exit(AKLOG_BADPATH);
1286 memset(tmpbuf, 0, sizeof(tmpbuf));
1288 strcpy(tmpbuf, elast_comp);
1289 if (linkbuf[0] == DIR) {
1291 * If this is a symbolic link to an absolute path,
1292 * replace what we have by the absolute path.
1294 memset(path, 0, strlen(path));
1295 memcpy(path, linkbuf, sizeof(linkbuf));
1296 strcat(path, tmpbuf);
1299 memset(pathtocheck, 0, sizeof(pathtocheck));
1303 * If this is a symbolic link to a relative path,
1304 * replace only the last component with the link name.
1306 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1307 strcat(path, tmpbuf);
1309 if ((t = strrchr(pathtocheck, DIR))) {
1311 memset(t, 0, strlen(t));
1314 memset(pathtocheck, 0, sizeof(pathtocheck));
1318 last_comp = elast_comp;
1322 return(pathtocheck);
1326 add_hosts(char *file)
1329 char V = 'V'; /* AFS has problem on SunOS */
1331 struct ViceIoctl vio;
1332 char outbuf[BUFSIZ];
1338 memset(outbuf, 0, sizeof(outbuf));
1340 vio.out_size = sizeof(outbuf);
1344 afs_dprintf("Getting list of hosts for %s\n", file);
1346 /* Don't worry about errors. */
1347 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1348 phosts = (long *) outbuf;
1351 * Lists hosts that we care about. If ALLHOSTS is defined,
1352 * then all hosts that you ever may possible go through are
1353 * included in this list. If not, then only hosts that are
1354 * the only ones appear. That is, if a volume you must use
1355 * is replaced on only one server, that server is included.
1356 * If it is replicated on many servers, then none are included.
1357 * This is not perfect, but the result is that people don't
1358 * get subscribed to a lot of instances of FILSRV that they
1359 * probably won't need which reduces the instances of
1360 * people getting messages that don't apply to them.
1363 if (phosts[1] != '\0')
1366 for (i = 0; phosts[i]; i++) {
1368 in.s_addr = phosts[i];
1369 afs_dprintf("Got host %s\n", inet_ntoa(in));
1370 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1372 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1373 afs_dprintf("Got host %s\n", hp->h_name);
1374 ll_string(&zsublist, ll_s_add, hp->h_name);
1381 * This routine descends through a path to a directory, logging to
1382 * every cell it encounters along the way.
1385 auth_to_path(krb5_context context, char *path)
1387 int status = AKLOG_SUCCESS;
1388 int auth_status = AKLOG_SUCCESS;
1391 char pathtocheck[MAXPATHLEN + 1];
1392 char mountpoint[MAXPATHLEN + 1];
1401 strcpy(pathtocheck, path);
1403 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1404 fprintf(stderr, "Unable to find current working directory:\n");
1405 fprintf(stderr, "%s\n", pathtocheck);
1406 fprintf(stderr, "Try an absolute pathname.\n");
1407 exit(AKLOG_BADPATH);
1410 strcat(pathtocheck, DIRSTRING);
1411 strcat(pathtocheck, path);
1414 next_path(pathtocheck);
1416 /* Go on to the next level down the path */
1417 while ((nextpath = next_path(NULL))) {
1418 strcpy(pathtocheck, nextpath);
1419 afs_dprintf("Checking directory %s\n", pathtocheck);
1421 * If this is an afs mountpoint, determine what cell from
1422 * the mountpoint name which is of the form
1423 * #cellname:volumename or %cellname:volumename.
1425 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1426 /* skip over the '#' or '%' */
1427 cell = mountpoint + 1;
1428 /* Add this (cell:volumename) to the list of zsubs */
1430 ll_string(&zsublist, ll_s_add, cell);
1432 add_hosts(pathtocheck);
1433 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1435 if ((auth_status = auth_to_cell(context, cell, NULL, NULL))) {
1436 if (status == AKLOG_SUCCESS)
1437 status = auth_status;
1438 else if (status != auth_status)
1439 status = AKLOG_SOMETHINGSWRONG;
1444 if (isdir(pathtocheck, &isdirectory) < 0) {
1446 * If we've logged and still can't stat, there's
1449 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1450 pathtocheck, strerror(errno));
1451 return(AKLOG_BADPATH);
1453 else if (! isdirectory) {
1454 /* Allow only directories */
1455 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1457 return(AKLOG_BADPATH);
1467 /* Print usage message and exit */
1471 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1472 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1473 "[[-p | -path] pathname]\n",
1474 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1476 #ifndef HAVE_NO_KRB5_524
1480 fprintf(stderr, " -d gives debugging information.\n");
1481 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1482 fprintf(stderr, " pathname is the name of a directory to which ");
1483 fprintf(stderr, "you wish to authenticate.\n");
1484 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1485 fprintf(stderr, " -hosts gives host address information.\n");
1486 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1487 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1488 fprintf(stderr, " -force means replace identical tickets. \n");
1489 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1490 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1491 #ifndef HAVE_NO_KRB5_524
1492 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1494 fprintf(stderr, " No commandline arguments means ");
1495 fprintf(stderr, "authenticate to the local cell.\n");
1496 fprintf(stderr, "\n");
1501 main(int argc, char *argv[])
1503 krb5_context context;
1504 int status = AKLOG_SUCCESS;
1506 int somethingswrong = FALSE;
1508 cellinfo_t cellinfo;
1510 extern char *progname; /* Name of this program */
1512 int cmode = FALSE; /* Cellname mode */
1513 int pmode = FALSE; /* Path name mode */
1515 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1516 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1517 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1519 linked_list cells; /* List of cells to log to */
1520 linked_list paths; /* List of paths to log to */
1524 memset(&cellinfo, 0, sizeof(cellinfo));
1526 memset(realm, 0, sizeof(realm));
1527 memset(cell, 0, sizeof(cell));
1528 memset(path, 0, sizeof(path));
1536 /* Store the program name here for error messages */
1537 if ((progname = strrchr(argv[0], DIR)))
1542 krb5_init_context(&context);
1543 initialize_KTC_error_table ();
1544 initialize_U_error_table();
1545 initialize_RXK_error_table();
1546 initialize_ACFG_error_table();
1547 initialize_PT_error_table();
1548 afs_set_com_err_hook(redirect_errors);
1551 * Enable DES enctypes, which are currently still required for AFS.
1552 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1555 #if defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1556 krb5_allow_weak_crypto(context, 1);
1557 #elif defined(HAVE_KRB5_ENCTYPE_ENABLE)
1558 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1560 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1563 /* Initialize list of cells to which we have authenticated */
1564 ll_init(&authedcells);
1566 /* Parse commandline arguments and make list of what to do. */
1567 for (i = 1; i < argc; i++) {
1568 if (strcmp(argv[i], "-d") == 0)
1570 else if (strcmp(argv[i], "-noauth") == 0)
1572 else if (strcmp(argv[i], "-zsubs") == 0)
1574 else if (strcmp(argv[i], "-hosts") == 0)
1576 else if (strcmp(argv[i], "-noprdb") == 0)
1578 else if (strcmp(argv[i], "-linked") == 0)
1580 else if (strcmp(argv[i], "-force") == 0)
1582 #ifndef HAVE_NO_KRB5_524
1583 else if (strcmp(argv[i], "-524") == 0)
1586 else if (strcmp(argv[i], "-setpag") == 0)
1588 else if (((strcmp(argv[i], "-cell") == 0) ||
1589 (strcmp(argv[i], "-c") == 0)) && !pmode)
1592 strcpy(cell, argv[i]);
1596 else if ((strcmp(argv[i], "-keytab") == 0))
1602 else if ((strcmp(argv[i], "-principal") == 0))
1608 else if (((strcmp(argv[i], "-path") == 0) ||
1609 (strcmp(argv[i], "-p") == 0)) && !cmode)
1612 strcpy(path, argv[i]);
1617 else if (argv[i][0] == '-')
1619 else if (!pmode && !cmode) {
1620 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1621 (strcmp(argv[i], "..") == 0)) {
1623 strcpy(path, argv[i]);
1627 strcpy(cell, argv[i]);
1634 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1637 strcpy(realm, argv[i]);
1641 /* Add this cell to list of cells */
1642 strcpy(cellinfo.cell, cell);
1643 strcpy(cellinfo.realm, realm);
1644 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1646 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1647 ll_add_data(cur_node, new_cellinfo);
1650 "%s: failure copying cellinfo.\n", progname);
1655 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1659 memset(&cellinfo, 0, sizeof(cellinfo));
1661 memset(cell, 0, sizeof(cell));
1662 memset(realm, 0, sizeof(realm));
1665 /* Add this path to list of paths */
1666 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1668 if ((new_path = strdup(path)))
1669 ll_add_data(cur_node, new_path);
1671 fprintf(stderr, "%s: failure copying path name.\n",
1677 fprintf(stderr, "%s: failure adding path to paths list.\n",
1682 memset(path, 0, sizeof(path));
1686 /* If nothing was given, log to the local cell. */
1687 if ((cells.nelements + paths.nelements) == 0) {
1690 status = auth_to_cell(context, NULL, NULL, &linkedcell);
1692 /* If this cell is linked to a DCE cell, and user requested -linked,
1693 * get tokens for both. This is very useful when the AFS cell is
1694 * linked to a DFS cell and this system does not also have DFS.
1697 if (!status && linked && linkedcell != NULL) {
1698 afs_dprintf("Linked cell: %s\n", linkedcell);
1699 status = auth_to_cell(context, linkedcell, NULL, NULL);
1707 * Local hack - if the person has a file in their home
1708 * directory called ".xlog", read that for a list of
1709 * extra cells to authenticate to
1712 if ((pwd = getpwuid(getuid())) != NULL) {
1715 char fcell[100], xlog_path[512];
1717 strcpy(xlog_path, pwd->pw_dir);
1718 strcat(xlog_path, "/.xlog");
1720 if ((stat(xlog_path, &sbuf) == 0) &&
1721 ((f = fopen(xlog_path, "r")) != NULL)) {
1723 afs_dprintf("Reading %s for cells to authenticate to.\n",
1726 while (fgets(fcell, 100, f) != NULL) {
1729 fcell[strlen(fcell) - 1] = '\0';
1731 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1733 auth_status = auth_to_cell(context, fcell, NULL, NULL);
1734 if (status == AKLOG_SUCCESS)
1735 status = auth_status;
1737 status = AKLOG_SOMETHINGSWRONG;
1743 /* Log to all cells in the cells list first */
1744 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1745 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1746 if ((status = auth_to_cell(context, cellinfo.cell, cellinfo.realm,
1750 if (linked && linkedcell != NULL) {
1751 afs_dprintf("Linked cell: %s\n", linkedcell);
1752 if ((status = auth_to_cell(context, linkedcell,
1753 cellinfo.realm, NULL)))
1756 if (linkedcell != NULL) {
1763 /* Then, log to all paths in the paths list */
1764 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1765 if ((status = auth_to_path(context, cur_node->data)))
1770 * If only one thing was logged to, we'll return the status
1771 * of the single call. Otherwise, we'll return a generic
1772 * something failed status.
1774 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1775 status = AKLOG_SOMETHINGSWRONG;
1778 /* If we are keeping track of zephyr subscriptions, print them. */
1780 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1781 printf("zsub: %s\n", cur_node->data);
1784 /* If we are keeping track of host information, print it. */
1786 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1787 printf("host: %s\n", cur_node->data);
1794 isdir(char *path, unsigned char *val)
1796 struct stat statbuf;
1798 if (lstat(path, &statbuf) < 0)
1801 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1809 static krb5_error_code
1810 get_credv5_akimpersonate(krb5_context context,
1812 krb5_principal service_principal,
1813 krb5_principal client_principal,
1816 int *allowed_enctypes,
1818 krb5_creds** out_creds /* out */ )
1820 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1821 krb5_error_code code;
1823 krb5_kt_cursor cursor[1];
1824 krb5_keytab_entry entry[1];
1826 krb5_creds *creds = 0;
1827 krb5_enctype enctype;
1829 krb5_keyblock session_key[1];
1831 Ticket ticket_reply[1];
1832 EncTicketPart enc_tkt_reply[1];
1833 krb5_address address[30];
1834 krb5_addresses faddr[1];
1836 time_t temp_time[2];
1838 krb5_ticket ticket_reply[1];
1839 krb5_enc_tkt_part enc_tkt_reply[1];
1840 krb5_address address[30], *faddr[30];
1844 static int any_enctype[] = {0};
1846 if (!(creds = malloc(sizeof *creds))) {
1850 if (!allowed_enctypes)
1851 allowed_enctypes = any_enctype;
1854 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1855 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1856 memset((char*)creds, 0, sizeof *creds);
1857 memset((char*)entry, 0, sizeof *entry);
1858 memset((char*)session_key, 0, sizeof *session_key);
1859 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1860 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1861 code = krb5_kt_resolve(context, keytab, &kt);
1864 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1866 afs_com_err(progname, code, "while resolving default keytab");
1870 if (service_principal) {
1871 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1872 code = krb5_kt_get_entry(context,
1879 if (allowed_enctypes[i])
1880 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1885 afs_com_err(progname, code,"while scanning keytab entries");
1889 krb5_keytab_entry new[1];
1891 memset(new, 0, sizeof *new);
1892 if ((code == krb5_kt_start_seq_get(context, kt, cursor))) {
1893 afs_com_err(progname, code, "while starting keytab scan");
1896 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1898 allowed_enctypes[i] && allowed_enctypes[i]
1899 != deref_entry_enctype(new); ++i)
1901 if ((!i || allowed_enctypes[i]) &&
1902 (best < 0 || best > i)) {
1903 krb5_free_keytab_entry_contents(context, entry);
1905 memset(new, 0, sizeof *new);
1906 } else krb5_free_keytab_entry_contents(context, new);
1908 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1909 afs_com_err(progname, i, "while ending keytab scan");
1914 afs_com_err(progname, code, "while scanning keytab");
1917 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1923 if ((code = krb5_generate_random_keyblock(context,
1924 deref_keyblock_enctype(session_key), session_key))) {
1925 afs_com_err(progname, code, "while making session key");
1928 enc_tkt_reply->flags.initial = 1;
1929 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1930 enc_tkt_reply->cname = client_principal->name;
1931 enc_tkt_reply->crealm = client_principal->realm;
1932 enc_tkt_reply->key = *session_key;
1934 static krb5_data empty_string;
1935 enc_tkt_reply->transited.contents = empty_string;
1937 enc_tkt_reply->authtime = starttime;
1938 enc_tkt_reply->starttime = temp_time;
1939 *enc_tkt_reply->starttime = starttime;
1941 enc_tkt_reply->renew_till = temp_time + 1;
1942 *enc_tkt_reply->renew_till = endtime;
1944 enc_tkt_reply->endtime = endtime;
1946 if ((code = krb5_c_make_random_key(context,
1947 deref_keyblock_enctype(session_key), session_key))) {
1948 afs_com_err(progname, code, "while making session key");
1951 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1952 #define DATACAST (unsigned char *)
1953 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1954 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1955 enc_tkt_reply->session = session_key;
1956 enc_tkt_reply->client = client_principal;
1958 static krb5_data empty_string;
1959 enc_tkt_reply->transited.tr_contents = empty_string;
1961 enc_tkt_reply->times.authtime = starttime;
1962 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1963 enc_tkt_reply->times.endtime = endtime;
1964 #endif /* USING_HEIMDAL */
1965 /* NB: We will discard address for now--ignoring caddr field
1966 in any case. MIT branch does what it always did. */
1968 if (paddress && *paddress) {
1969 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1972 faddr->val = address;
1974 for (i = 0; paddress[i]; ++i) {
1976 address[i].addr_type = KRB5_ADDRESS_INET;
1977 address[i].address.data = (void*)(paddress+i);
1978 address[i].address.length = sizeof(paddress[i]);
1981 address[i].magic = KV5M_ADDRESS;
1982 address[i].addrtype = ADDRTYPE_INET;
1984 address[i].addrtype = AF_INET;
1986 address[i].contents = (void*)(paddress+i);
1987 address[i].length = sizeof(int);
1988 faddr[i] = address+i;
1999 ticket_reply->sname = service_principal->name;
2000 ticket_reply->realm = service_principal->realm;
2002 { /* crypto block */
2003 krb5_crypto crypto = 0;
2004 unsigned char *buf = 0;
2005 size_t buf_size, buf_len;
2008 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
2009 enc_tkt_reply, &buf_len, code);
2011 afs_com_err(progname, code, "while encoding ticket");
2015 if(buf_len != buf_size) {
2016 afs_com_err(progname, code,
2017 "%d != %d while encoding ticket (internal ASN.1 encoder error",
2021 what = "krb5_crypto_init";
2022 code = krb5_crypto_init(context,
2023 &deref_entry_keyblock(entry),
2024 deref_entry_enctype(entry),
2027 what = "krb5_encrypt";
2028 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
2029 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
2032 if (crypto) krb5_crypto_destroy(context, crypto);
2034 afs_com_err(progname, code, "while %s", what);
2037 } /* crypto block */
2038 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
2039 ticket_reply->enc_part.kvno = temp_vno;
2040 *ticket_reply->enc_part.kvno = entry->vno;
2041 ticket_reply->tkt_vno = 5;
2043 ticket_reply->server = service_principal;
2044 ticket_reply->enc_part2 = enc_tkt_reply;
2045 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
2046 afs_com_err(progname, code, "while making ticket");
2049 ticket_reply->enc_part.kvno = entry->vno;
2052 /* Construct Creds */
2054 if ((code = krb5_copy_principal(context, service_principal,
2056 afs_com_err(progname, code, "while copying service principal");
2059 if ((code = krb5_copy_principal(context, client_principal,
2061 afs_com_err(progname, code, "while copying client principal");
2064 if ((code = krb5_copy_keyblock_contents(context, session_key,
2065 &deref_session_key(creds)))) {
2066 afs_com_err(progname, code, "while copying session key");
2071 creds->times.authtime = enc_tkt_reply->authtime;
2072 creds->times.starttime = *(enc_tkt_reply->starttime);
2073 creds->times.endtime = enc_tkt_reply->endtime;
2074 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2075 creds->flags.b = enc_tkt_reply->flags;
2077 creds->times = enc_tkt_reply->times;
2078 creds->ticket_flags = enc_tkt_reply->flags;
2080 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2082 else if ((code = krb5_copy_addresses(context,
2083 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2084 afs_com_err(progname, code, "while copying addresses");
2090 size_t creds_tkt_len;
2091 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2092 ticket_reply, &creds_tkt_len, code);
2094 afs_com_err(progname, code, "while encoding ticket");
2099 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2100 afs_com_err(progname, code, "while encoding ticket");
2103 creds->ticket = *temp;
2110 if (deref_enc_data(&ticket_reply->enc_part))
2111 free(deref_enc_data(&ticket_reply->enc_part));
2112 krb5_free_keytab_entry_contents(context, entry);
2113 if (client_principal)
2114 krb5_free_principal(context, client_principal);
2115 if (service_principal)
2116 krb5_free_principal(context, service_principal);
2118 krb5_cc_close(context, cc);
2120 krb5_kt_close(context, kt);
2121 if (creds) krb5_free_creds(context, creds);
2122 krb5_free_keyblock_contents(context, session_key);
2130 static krb5_error_code
2131 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2136 static krb5_principal client_principal = 0;
2138 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2139 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2141 memset(&increds, 0, sizeof(increds));
2142 /* ANL - instance may be ptr to a null string. Pass null then */
2143 if ((r = krb5_build_principal(context, &increds.server,
2144 strlen(realm), realm,
2146 (inst && strlen(inst)) ? inst : (void *) NULL,
2152 if (!_krb425_ccache) {
2153 r = krb5_cc_default(context, &_krb425_ccache);
2157 if (!client_principal) {
2159 r = krb5_parse_name(context, client, &client_principal);
2161 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2167 increds.client = client_principal;
2168 increds.times.endtime = 0;
2169 /* Ask for DES since that is what V4 understands */
2170 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2173 int allowed_enctypes[] = {
2174 ENCTYPE_DES_CBC_CRC, 0
2177 r = get_credv5_akimpersonate(context,
2186 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2193 get_user_realm(krb5_context context, char **realm)
2195 static krb5_principal client_principal = 0;
2196 krb5_error_code r = 0;
2200 if (!_krb425_ccache)
2201 krb5_cc_default(context, &_krb425_ccache);
2202 if (!client_principal) {
2204 r = krb5_parse_name(context, client, &client_principal);
2206 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2212 *realm = extract_realm(context, client_principal);