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5 * For distribution and copying rights, see the file "mit-copyright.h"
8 * Copyright (c) 2005, 2006
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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);
341 #elif defined(HAVE_ERROR_MESSAGE)
342 str = error_message(code);
344 ; /* IRIX apparently has neither: use the string we have */
349 #ifdef HAVE_KRB5_SVC_GET_MSG
350 krb5_free_string(str);
354 vfprintf(stderr, fmt, ap);
361 afs_dprintf(char *fmt, ...) {
371 copy_cellinfo(cellinfo_t *cellinfo)
373 cellinfo_t *new_cellinfo;
375 if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t))))
376 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
378 return ((char *)new_cellinfo);
383 get_cellconfig(char *cell, struct afsconf_cell *cellconfig, char **local_cell)
385 int status = AKLOG_SUCCESS;
386 struct afsconf_dir *configdir;
388 memset(cellconfig, 0, sizeof(*cellconfig));
390 *local_cell = malloc(MAXCELLCHARS);
391 if (*local_cell == NULL) {
392 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
397 if (!(configdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH))) {
399 "%s: can't get afs configuration (afsconf_Open(%s))\n",
400 progname, AFSDIR_CLIENT_ETC_DIRPATH);
404 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
405 fprintf(stderr, "%s: can't determine local cell.\n", progname);
409 if ((cell == NULL) || (cell[0] == 0))
412 /* XXX - This function modifies 'cell' by passing it through lcstring */
413 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
414 fprintf(stderr, "%s: Can't get information about cell %s.\n",
419 afsconf_Close(configdir);
425 extract_realm(krb5_context context, krb5_principal princ) {
429 len = realm_len(context, princ);
430 if (len > REALM_SZ-1)
433 realm = malloc(sizeof(char) * (len+1));
437 strncpy(realm, realm_data(context, princ), len);
444 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
445 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
446 krb5_error_code code;
451 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
455 *realm = extract_realm(context, ticket->server);
459 krb5_free_ticket(context, ticket);
469 * Get a Kerberos service ticket to use as the base of an rxkad token for
473 * An initialized Kerberos v5 context
475 * The realm to look in for the service principal. If NULL, then the
476 * realm is determined from the cell name or the user's credentials
477 * (see below for the heuristics used)
479 * The cell information for the cell to obtain a ticket for
481 * A Kerberos credentials structure containing the ticket acquired
482 * for the cell. This is a dynamically allocated structure, which
483 * should be freed by using the appropriate Kerberos API function.
484 * @param[out] realmUsed
485 * The realm in which the cell's service principal was located. If
486 * unset, then the principal was located in the same realm as the
487 * current user. This is a malloc'd string which should be freed
491 * 0 on success, an error value upon failure
494 * This code tries principals in the following, much debated,
497 * If the realm is specified on the command line we do
498 * - afs/cell@COMMAND-LINE-REALM
499 * - afs@COMMAND-LINE-REALM
502 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
503 * - afs/cell@krb5_get_host_realm(db-server)
504 * Then, if krb5_get_host_realm(db-server) is non-empty
505 * - afs@ krb5_get_host_realm(db-server)
507 * - afs/cell@ upper-case-domain-of-db-server
508 * - afs@ upper-case-domain-of-db-server
510 * In all cases, the 'afs@' variant is only tried where the
511 * cell and the realm match case-insensitively.
515 rxkad_get_ticket(krb5_context context, char *realm,
516 struct afsconf_cell *cell,
517 krb5_creds **v5cred, char **realmUsed) {
518 char *realm_of_cell = NULL;
519 char *realm_of_user = NULL;
520 char *realm_from_princ = NULL;
526 if ((status = get_user_realm(context, &realm_of_user))) {
527 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
528 afs_com_err(progname, status, " while getting realm");
529 status = AKLOG_KERBEROS;
536 /* Cell on command line - use that one */
537 if (realm && realm[0]) {
538 realm_of_cell = realm;
539 status = AKLOG_TRYAGAIN;
540 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
542 /* Initially, try using afs/cell@USERREALM */
543 afs_dprintf("Trying to authenticate to user's realm %s.\n",
545 realm_of_cell = realm_of_user;
546 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
549 /* If that failed, try to determine the realm from the name of
550 * one of the DB servers */
551 if (TRYAGAIN(status)) {
552 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
553 if (!realm_of_cell) {
554 fprintf(stderr, "%s: Couldn't figure out realm for cell "
555 "%s.\n", progname, cell->name);
559 if (realm_of_cell[0])
560 afs_dprintf("We've deduced that we need to authenticate"
561 " to realm %s.\n", realm_of_cell);
563 afs_dprintf("We've deduced that we need to authenticate "
564 "using referrals.\n");
568 if (TRYAGAIN(status)) {
569 /* If we've got the full-princ-first option, or we're in a
570 * different realm from the cell - use the cell name as the
572 if (AFS_TRY_FULL_PRINC ||
573 strcasecmp(cell->name, realm_of_cell)!=0) {
574 status = get_credv5(context, AFSKEY, cell->name,
575 realm_of_cell, v5cred);
577 /* If we failed & we've got an empty realm, then try
578 * calling afs_realm_for_cell again. */
579 if (TRYAGAIN(status) && !realm_of_cell[0]) {
580 /* This time, get the realm by taking the domain
581 * component of the db server and make it upper case */
582 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
583 if (!realm_of_cell) {
585 "%s: Couldn't figure out realm for cell %s.\n",
586 progname, cell->name);
589 afs_dprintf("We've deduced that we need to authenticate"
590 " to realm %s.\n", realm_of_cell);
592 status = get_credv5(context, AFSKEY, cell->name,
593 realm_of_cell, v5cred);
596 /* If the realm and cell name match, then try without an
597 * instance, but only if realm is non-empty */
599 if (TRYAGAIN(status) &&
600 strcasecmp(cell->name, realm_of_cell) == 0) {
601 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
603 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
604 status = get_credv5(context, AFSKEY, cell->name,
605 realm_of_cell, v5cred);
610 /* Try to find a service principal for this cell.
611 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
612 * the first attempt, so we try twice to be sure */
614 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
621 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
622 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
623 progname, cell->name);
624 afs_com_err(progname, status, "while getting AFS tickets");
625 #ifdef KRB5_CC_NOT_KTYPE
626 if (status == KRB5_CC_NOT_KTYPE) {
627 fprintf(stderr, "allow_weak_enctypes may be required in the Kerberos configuration\n");
630 status = AKLOG_KERBEROS;
634 /* If we've got a valid ticket, and we still don't know the realm name
635 * try to figure it out from the contents of the ticket
637 if (strcmp(realm_of_cell, "") == 0) {
638 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
641 "%s: Couldn't decode ticket to determine realm for "
643 progname, cell->name);
645 if (realm_from_princ)
646 realm_of_cell = realm_from_princ;
650 /* If the realm of the user and cell differ, then we need to use the
651 * realm when we later construct the user's principal */
652 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
653 *realmUsed = realm_of_user;
656 if (realm_from_princ)
657 free(realm_from_princ);
658 if (realm_of_user && *realmUsed == NULL)
665 * Build an rxkad token from a Kerberos ticket, using only local tools (that
666 * is, without using a 524 conversion service)
669 * An initialised Kerberos 5 context
671 * A Kerberos credentials structure containing a suitable service ticket
672 * @param[out] tokenPtr
673 * An AFS token structure containing an rxkad token. This is a malloc'd
674 * structure which should be freed by the caller.
675 * @param[out[ userPtr
676 * A string containing the principal of the user to whom the token was
677 * issued. This is a malloc'd block which should be freed by the caller.
680 * 0 on success, an error value upon failure
683 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
684 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
685 char username[BUFSIZ];
686 struct ktc_tokenUnion *token;
687 struct token_rxkad *rxkadToken;
688 #ifdef HAVE_NO_KRB5_524
693 char k4name[ANAME_SZ];
694 char k4inst[INST_SZ];
695 char k4realm[REALM_SZ];
698 afs_dprintf("Using Kerberos V5 ticket natively\n");
703 #ifndef HAVE_NO_KRB5_524
704 status = krb5_524_conv_principal (context, v5cred->client,
709 afs_com_err(progname, status, "while converting principal "
710 "to Kerberos V4 format");
711 return AKLOG_KERBEROS;
713 strcpy (username, k4name);
715 strcat (username, ".");
716 strcat (username, k4inst);
719 len = min(get_princ_len(context, v5cred->client, 0),
720 second_comp(context, v5cred->client) ?
721 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
722 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
723 username[len] = '\0';
725 if (second_comp(context, v5cred->client)) {
726 strcat(username, ".");
727 p = username + strlen(username);
728 len = min(get_princ_len(context, v5cred->client, 1),
729 MAXKTCNAMELEN - strlen(username) - 1);
730 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
735 token = malloc(sizeof(struct ktc_tokenUnion));
739 memset(token, 0, sizeof(struct ktc_tokenUnion));
741 token->at_type = AFSTOKEN_UNION_KAD;
742 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
744 rxkadToken->rk_kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
745 rxkadToken->rk_begintime = v5cred->times.starttime;;
746 rxkadToken->rk_endtime = v5cred->times.endtime;
747 memcpy(&rxkadToken->rk_key, get_cred_keydata(v5cred),
748 get_cred_keylen(v5cred));
749 rxkadToken->rk_ticket.rk_ticket_len = v5cred->ticket.length;
750 rxkadToken->rk_ticket.rk_ticket_val = malloc(v5cred->ticket.length);
751 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
755 memcpy(rxkadToken->rk_ticket.rk_ticket_val, v5cred->ticket.data,
756 rxkadToken->rk_ticket.rk_ticket_len);
759 *userPtr = strdup(username);
765 * Convert a Keberos ticket to an rxkad token, using information obtained
766 * from an external Kerberos 5->4 conversion service. If the code is built
767 * with HAVE_NO_KRB5_524 then this is a stub function which will always
768 * return success without a token.
771 * An initialised Kerberos 5 context
773 * A Kerberos credentials structure containing a suitable service ticket
774 * @param[out] tokenPtr
775 * An AFS token structure containing an rxkad token. This is a malloc'd
776 * structure which should be freed by the caller.
777 * @param[out[ userPtr
778 * A string containing the principal of the user to whom the token was
779 * issued. This is a malloc'd block which should be freed by the caller.
782 * 0 on success, an error value upon failure
785 #ifdef HAVE_NO_KRB5_524
787 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
788 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
796 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
797 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
799 char username[BUFSIZ];
800 struct ktc_tokenUnion *token;
801 struct token_rxkad *rxkadToken;
807 afs_dprintf("Using Kerberos 524 translator service\n");
809 status = krb5_524_convert_creds(context, v5cred, &cred);
812 afs_com_err(progname, status, "while converting tickets "
813 "to Kerberos V4 format");
814 return AKLOG_KERBEROS;
817 strcpy (username, cred.pname);
819 strcat (username, ".");
820 strcat (username, cred.pinst);
823 token = malloc(sizeof(struct ktc_tokenUnion));
826 memset(token, 0, sizeof(struct ktc_tokenUnion));
828 token->at_type = AFSTOKEN_UNION_KAD;
830 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
831 rxkadToken->rk_kvno = cred.kvno;
832 rxkadToken->rk_begintime = cred.issue_date;
834 * It seems silly to go through a bunch of contortions to
835 * extract the expiration time, when the v5 credentials already
836 * has the exact time! Let's use that instead.
838 * Note that this isn't a security hole, as the expiration time
839 * is also contained in the encrypted token
841 rxkadToken->rk_endtime = v5cred->times.endtime;
842 memcpy(&rxkadToken->rk_key, cred.session, 8);
843 rxkadToken->rk_ticket.rk_ticket_len = cred.ticket_st.length;
844 rxkadToken->rk_ticket.rk_ticket_val = malloc(cred.ticket_st.length);
845 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
849 memcpy(rxkadToken->rk_ticket.rk_ticket_val, cred.ticket_st.dat,
850 rxkadToken->rk_ticket.rk_ticket_len);
853 *userPtr = strdup(username);
860 * This function gets an rxkad token for a given cell.
863 * An initialized Kerberos v5 context
865 * The cell information for the cell which we're obtaining a token for
867 * The realm to look in for the service principal. If NULL, then the
868 * realm is determined from the cell name or the user's credentials
869 * (see the documentation for rxkad_get_ticket)
871 * The rxkad token produced. This is a malloc'd structure which should
872 * be freed by the caller.
873 * @parma[out] authuser
874 * A string containing the principal of the user to whom the token was
875 * issued. This is a malloc'd block which should be freed by the caller.
876 * @param[out] foreign
877 * Whether the user is considered as 'foreign' to the realm of the cell.
880 * 0 on success, an error value upon failuer
883 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
884 struct ktc_tokenUnion **token, char **authuser, int *foreign) {
886 char *realmUsed = NULL;
887 char *username = NULL;
895 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
900 status = rxkad_get_converted_token(context, v5cred, token, &username);
902 status = rxkad_build_native_token(context, v5cred, token, &username);
907 /* We now have the username, plus the realm name, so stitch them together
908 * to give us the name that the ptserver will know the user by */
909 if (realmUsed == NULL) {
910 *authuser = username;
914 len = strlen(username)+strlen(realmUsed)+2;
915 *authuser = malloc(len);
916 afs_snprintf(*authuser, len, "%s@%s", username, realmUsed);
930 * Log to a cell. If the cell has already been logged to, return without
931 * doing anything. Otherwise, log to it and mark that it has been logged
935 auth_to_cell(krb5_context context, char *cell, char *realm, char **linkedcell)
937 int status = AKLOG_SUCCESS;
939 char *username = NULL; /* To hold client username structure */
940 afs_int32 viceId; /* AFS uid of user */
942 char *local_cell = NULL;
943 struct ktc_tokenUnion *rxkadToken = NULL;
944 struct ktc_setTokenData *token;
945 struct ktc_setTokenData *btoken = NULL;
946 struct afsconf_cell cellconf;
948 /* NULL or empty cell returns information on local cell */
949 if ((status = get_cellconfig(cell, &cellconf, &local_cell)))
952 if (linkedcell != NULL) {
953 if (cellconf.linkedCell != NULL) {
954 *linkedcell = strdup(cellconf.linkedCell);
955 if (*linkedcell == NULL) {
964 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
965 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
966 status = AKLOG_SUCCESS;
971 * Record that we have attempted to log to this cell. We do this
972 * before we try rather than after so that we will not try
973 * and fail repeatedly for one cell.
975 ll_string(&authedcells, ll_s_add, cellconf.name);
978 * Record this cell in the list of zephyr subscriptions. We may
979 * want zephyr subscriptions even if authentication fails.
980 * If this is done after we attempt to get tokens, aklog -zsubs
981 * can return something different depending on whether or not we
982 * are in -noauth mode.
984 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
986 "%s: failure adding cell %s to zephyr subscriptions list.\n",
987 progname, cellconf.name);
990 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
992 "%s: failure adding cell %s to zephyr subscriptions list.\n",
993 progname, local_cell);
998 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
999 cellconf.hostName[0]);
1001 token = token_buildTokenJar(cellconf.name);
1002 if (token == NULL) {
1007 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
1008 &username, &isForeign);
1012 /* We need to keep the token structure around so that we can stick
1013 * the viceId into it (once we know it) */
1014 status = token_addToken(token, rxkadToken);
1016 afs_dprintf("Add Token failed with %d", status);
1021 ktc_GetTokenEx(cellconf.name, &btoken) == 0 &&
1022 token_SetsEquivalent(token, btoken)) {
1024 token_FreeSet(&btoken);
1025 afs_dprintf("Identical tokens already exist; skipping.\n");
1026 status = AKLOG_SUCCESS;
1031 token_FreeSet(&btoken);
1038 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1041 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1044 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1045 status = pr_SNameToId (username, &viceId);
1048 afs_dprintf("Error %d\n", status);
1050 afs_dprintf("Id %d\n", (int) viceId);
1054 * This code is taken from cklog -- it lets people
1055 * automatically register with the ptserver in foreign cells
1058 #ifdef ALLOW_REGISTER
1059 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1060 afs_dprintf("doing first-time registration of %s at %s\n",
1061 username, cellconf.name);
1064 status = ktc_SetTokenEx(token);
1066 afs_com_err(progname, status,
1067 "while obtaining tokens for cell %s",
1069 status = AKLOG_TOKEN;
1073 * In case you're wondering, we don't need to change the
1074 * filename here because we're still connecting to the
1075 * same cell -- we're just using a different authenticat ion
1079 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1081 printf("Error %d\n", status);
1084 if ((status = pr_CreateUser(username, &viceId))) {
1085 fprintf(stderr, "%s: %s so unable to create remote PTS "
1086 "user %s in cell %s (status: %d).\n", progname,
1087 afs_error_message(status), username, cellconf.name,
1089 viceId = ANONYMOUSID;
1091 printf("created cross-cell entry for %s (Id %d) at %s\n",
1092 username, viceId, cellconf.name);
1095 #endif /* ALLOW_REGISTER */
1097 if ((status == 0) && (viceId != ANONYMOUSID)) {
1098 rxkadToken->ktc_tokenUnion_u.at_kad.rk_viceid = viceId;
1099 token_replaceToken(token, rxkadToken);
1103 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1105 #ifndef AFS_AIX51_ENV
1106 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1107 * this routine, it will not add the token. It is not clear what
1108 * is going on here! So we will do the following operation.
1109 * On AIX 5, it causes the parent program to die, so we won't.
1111 write(2,"",0); /* dummy write */
1113 token_setPag(token, afssetpag);
1114 status = ktc_SetTokenEx(token);
1116 afs_com_err(progname, status, "while setting tokens for cell %s",
1118 status = AKLOG_TOKEN;
1122 afs_dprintf("Noauth mode; not authenticating.\n");
1126 free(rxkadToken->ktc_tokenUnion_u.at_kad.rk_ticket.rk_ticket_val);
1139 get_afs_mountpoint(char *file, char *mountpoint, int size)
1142 char V ='V'; /* AFS has problem on Sun with pioctl */
1144 char our_file[MAXPATHLEN + 1];
1146 char *last_component;
1147 struct ViceIoctl vio;
1148 char cellname[BUFSIZ];
1150 memset(our_file, 0, sizeof(our_file));
1151 strcpy(our_file, file);
1153 if ((last_component = strrchr(our_file, DIR))) {
1154 *last_component++ = 0;
1155 parent_dir = our_file;
1158 last_component = our_file;
1162 memset(cellname, 0, sizeof(cellname));
1164 vio.in = last_component;
1165 vio.in_size = strlen(last_component)+1;
1166 vio.out_size = size;
1167 vio.out = mountpoint;
1169 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1170 if (strchr(mountpoint, VOLMARKER) == NULL) {
1172 vio.in_size = strlen(file) + 1;
1173 vio.out_size = sizeof(cellname);
1176 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1177 strcat(cellname, VOLMARKERSTRING);
1178 strcat(cellname, mountpoint + 1);
1179 memset(mountpoint + 1, 0, size - 1);
1180 strcpy(mountpoint + 1, cellname);
1190 * This routine each time it is called returns the next directory
1191 * down a pathname. It resolves all symbolic links. The first time
1192 * it is called, it should be called with the name of the path
1193 * to be descended. After that, it should be called with the arguemnt
1197 next_path(char *origpath)
1199 static char path[MAXPATHLEN + 1];
1200 static char pathtocheck[MAXPATHLEN + 1];
1202 int link = FALSE; /* Is this a symbolic link? */
1203 char linkbuf[MAXPATHLEN + 1];
1204 char tmpbuf[MAXPATHLEN + 1];
1206 static char *last_comp; /* last component of directory name */
1207 static char *elast_comp; /* End of last component */
1211 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1213 /* If we are given something for origpath, we are initializing only. */
1215 memset(path, 0, sizeof(path));
1216 memset(pathtocheck, 0, sizeof(pathtocheck));
1217 strcpy(path, origpath);
1223 /* We were not given origpath; find then next path to check */
1225 /* If we've gotten all the way through already, return NULL */
1226 if (last_comp == NULL)
1230 while (*last_comp == DIR)
1231 strncat(pathtocheck, last_comp++, 1);
1232 len = (elast_comp = strchr(last_comp, DIR))
1233 ? elast_comp - last_comp : strlen(last_comp);
1234 strncat(pathtocheck, last_comp, len);
1235 memset(linkbuf, 0, sizeof(linkbuf));
1236 if ((link = (readlink(pathtocheck, linkbuf,
1237 sizeof(linkbuf)) > 0))) {
1238 if (++symlinkcount > MAXSYMLINKS) {
1239 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1240 exit(AKLOG_BADPATH);
1242 memset(tmpbuf, 0, sizeof(tmpbuf));
1244 strcpy(tmpbuf, elast_comp);
1245 if (linkbuf[0] == DIR) {
1247 * If this is a symbolic link to an absolute path,
1248 * replace what we have by the absolute path.
1250 memset(path, 0, strlen(path));
1251 memcpy(path, linkbuf, sizeof(linkbuf));
1252 strcat(path, tmpbuf);
1255 memset(pathtocheck, 0, sizeof(pathtocheck));
1259 * If this is a symbolic link to a relative path,
1260 * replace only the last component with the link name.
1262 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1263 strcat(path, tmpbuf);
1265 if ((t = strrchr(pathtocheck, DIR))) {
1267 memset(t, 0, strlen(t));
1270 memset(pathtocheck, 0, sizeof(pathtocheck));
1274 last_comp = elast_comp;
1278 return(pathtocheck);
1282 add_hosts(char *file)
1285 char V = 'V'; /* AFS has problem on SunOS */
1287 struct ViceIoctl vio;
1288 char outbuf[BUFSIZ];
1294 memset(outbuf, 0, sizeof(outbuf));
1296 vio.out_size = sizeof(outbuf);
1300 afs_dprintf("Getting list of hosts for %s\n", file);
1302 /* Don't worry about errors. */
1303 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1304 phosts = (long *) outbuf;
1307 * Lists hosts that we care about. If ALLHOSTS is defined,
1308 * then all hosts that you ever may possible go through are
1309 * included in this list. If not, then only hosts that are
1310 * the only ones appear. That is, if a volume you must use
1311 * is replaced on only one server, that server is included.
1312 * If it is replicated on many servers, then none are included.
1313 * This is not perfect, but the result is that people don't
1314 * get subscribed to a lot of instances of FILSRV that they
1315 * probably won't need which reduces the instances of
1316 * people getting messages that don't apply to them.
1319 if (phosts[1] != '\0')
1322 for (i = 0; phosts[i]; i++) {
1324 in.s_addr = phosts[i];
1325 afs_dprintf("Got host %s\n", inet_ntoa(in));
1326 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1328 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1329 afs_dprintf("Got host %s\n", hp->h_name);
1330 ll_string(&zsublist, ll_s_add, hp->h_name);
1337 * This routine descends through a path to a directory, logging to
1338 * every cell it encounters along the way.
1341 auth_to_path(krb5_context context, char *path)
1343 int status = AKLOG_SUCCESS;
1344 int auth_status = AKLOG_SUCCESS;
1347 char pathtocheck[MAXPATHLEN + 1];
1348 char mountpoint[MAXPATHLEN + 1];
1357 strcpy(pathtocheck, path);
1359 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1360 fprintf(stderr, "Unable to find current working directory:\n");
1361 fprintf(stderr, "%s\n", pathtocheck);
1362 fprintf(stderr, "Try an absolute pathname.\n");
1363 exit(AKLOG_BADPATH);
1366 strcat(pathtocheck, DIRSTRING);
1367 strcat(pathtocheck, path);
1370 next_path(pathtocheck);
1372 /* Go on to the next level down the path */
1373 while ((nextpath = next_path(NULL))) {
1374 strcpy(pathtocheck, nextpath);
1375 afs_dprintf("Checking directory %s\n", pathtocheck);
1377 * If this is an afs mountpoint, determine what cell from
1378 * the mountpoint name which is of the form
1379 * #cellname:volumename or %cellname:volumename.
1381 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1382 /* skip over the '#' or '%' */
1383 cell = mountpoint + 1;
1384 /* Add this (cell:volumename) to the list of zsubs */
1386 ll_string(&zsublist, ll_s_add, cell);
1388 add_hosts(pathtocheck);
1389 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1391 if ((auth_status = auth_to_cell(context, cell, NULL, NULL))) {
1392 if (status == AKLOG_SUCCESS)
1393 status = auth_status;
1394 else if (status != auth_status)
1395 status = AKLOG_SOMETHINGSWRONG;
1400 if (isdir(pathtocheck, &isdirectory) < 0) {
1402 * If we've logged and still can't stat, there's
1405 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1406 pathtocheck, strerror(errno));
1407 return(AKLOG_BADPATH);
1409 else if (! isdirectory) {
1410 /* Allow only directories */
1411 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1413 return(AKLOG_BADPATH);
1423 /* Print usage message and exit */
1427 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1428 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1429 "[[-p | -path] pathname]\n",
1430 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1432 #ifndef HAVE_NO_KRB5_524
1436 fprintf(stderr, " -d gives debugging information.\n");
1437 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1438 fprintf(stderr, " pathname is the name of a directory to which ");
1439 fprintf(stderr, "you wish to authenticate.\n");
1440 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1441 fprintf(stderr, " -hosts gives host address information.\n");
1442 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1443 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1444 fprintf(stderr, " -force means replace identical tickets. \n");
1445 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1446 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1447 #ifndef HAVE_NO_KRB5_524
1448 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1450 fprintf(stderr, " No commandline arguments means ");
1451 fprintf(stderr, "authenticate to the local cell.\n");
1452 fprintf(stderr, "\n");
1457 main(int argc, char *argv[])
1459 krb5_context context;
1460 int status = AKLOG_SUCCESS;
1462 int somethingswrong = FALSE;
1464 cellinfo_t cellinfo;
1466 extern char *progname; /* Name of this program */
1468 int cmode = FALSE; /* Cellname mode */
1469 int pmode = FALSE; /* Path name mode */
1471 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1472 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1473 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1475 linked_list cells; /* List of cells to log to */
1476 linked_list paths; /* List of paths to log to */
1480 memset(&cellinfo, 0, sizeof(cellinfo));
1482 memset(realm, 0, sizeof(realm));
1483 memset(cell, 0, sizeof(cell));
1484 memset(path, 0, sizeof(path));
1492 /* Store the program name here for error messages */
1493 if ((progname = strrchr(argv[0], DIR)))
1498 krb5_init_context(&context);
1499 initialize_KTC_error_table ();
1500 initialize_U_error_table();
1501 initialize_RXK_error_table();
1502 initialize_ACFG_error_table();
1503 initialize_PT_error_table();
1504 afs_set_com_err_hook(redirect_errors);
1507 * Enable DES enctypes, which are currently still required for AFS.
1508 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1511 #if defined(HAVE_KRB5_ENCTYPE_ENABLE)
1512 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1514 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1515 #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1516 krb5_allow_weak_crypto(context, 1);
1519 /* Initialize list of cells to which we have authenticated */
1520 ll_init(&authedcells);
1522 /* Parse commandline arguments and make list of what to do. */
1523 for (i = 1; i < argc; i++) {
1524 if (strcmp(argv[i], "-d") == 0)
1526 else if (strcmp(argv[i], "-noauth") == 0)
1528 else if (strcmp(argv[i], "-zsubs") == 0)
1530 else if (strcmp(argv[i], "-hosts") == 0)
1532 else if (strcmp(argv[i], "-noprdb") == 0)
1534 else if (strcmp(argv[i], "-linked") == 0)
1536 else if (strcmp(argv[i], "-force") == 0)
1538 #ifndef HAVE_NO_KRB5_524
1539 else if (strcmp(argv[i], "-524") == 0)
1542 else if (strcmp(argv[i], "-setpag") == 0)
1544 else if (((strcmp(argv[i], "-cell") == 0) ||
1545 (strcmp(argv[i], "-c") == 0)) && !pmode)
1548 strcpy(cell, argv[i]);
1552 else if ((strcmp(argv[i], "-keytab") == 0))
1558 else if ((strcmp(argv[i], "-principal") == 0))
1564 else if (((strcmp(argv[i], "-path") == 0) ||
1565 (strcmp(argv[i], "-p") == 0)) && !cmode)
1568 strcpy(path, argv[i]);
1573 else if (argv[i][0] == '-')
1575 else if (!pmode && !cmode) {
1576 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1577 (strcmp(argv[i], "..") == 0)) {
1579 strcpy(path, argv[i]);
1583 strcpy(cell, argv[i]);
1590 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1593 strcpy(realm, argv[i]);
1597 /* Add this cell to list of cells */
1598 strcpy(cellinfo.cell, cell);
1599 strcpy(cellinfo.realm, realm);
1600 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1602 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1603 ll_add_data(cur_node, new_cellinfo);
1606 "%s: failure copying cellinfo.\n", progname);
1611 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1615 memset(&cellinfo, 0, sizeof(cellinfo));
1617 memset(cell, 0, sizeof(cell));
1618 memset(realm, 0, sizeof(realm));
1621 /* Add this path to list of paths */
1622 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1624 if ((new_path = strdup(path)))
1625 ll_add_data(cur_node, new_path);
1627 fprintf(stderr, "%s: failure copying path name.\n",
1633 fprintf(stderr, "%s: failure adding path to paths list.\n",
1638 memset(path, 0, sizeof(path));
1642 /* If nothing was given, log to the local cell. */
1643 if ((cells.nelements + paths.nelements) == 0) {
1646 status = auth_to_cell(context, NULL, NULL, &linkedcell);
1648 /* If this cell is linked to a DCE cell, and user requested -linked,
1649 * get tokens for both. This is very useful when the AFS cell is
1650 * linked to a DFS cell and this system does not also have DFS.
1653 if (!status && linked && linkedcell != NULL) {
1654 afs_dprintf("Linked cell: %s\n", linkedcell);
1655 status = auth_to_cell(context, linkedcell, NULL, NULL);
1663 * Local hack - if the person has a file in their home
1664 * directory called ".xlog", read that for a list of
1665 * extra cells to authenticate to
1668 if ((pwd = getpwuid(getuid())) != NULL) {
1671 char fcell[100], xlog_path[512];
1673 strcpy(xlog_path, pwd->pw_dir);
1674 strcat(xlog_path, "/.xlog");
1676 if ((stat(xlog_path, &sbuf) == 0) &&
1677 ((f = fopen(xlog_path, "r")) != NULL)) {
1679 afs_dprintf("Reading %s for cells to authenticate to.\n",
1682 while (fgets(fcell, 100, f) != NULL) {
1685 fcell[strlen(fcell) - 1] = '\0';
1687 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1689 auth_status = auth_to_cell(context, fcell, NULL, NULL);
1690 if (status == AKLOG_SUCCESS)
1691 status = auth_status;
1693 status = AKLOG_SOMETHINGSWRONG;
1699 /* Log to all cells in the cells list first */
1700 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1701 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1702 if ((status = auth_to_cell(context, cellinfo.cell, cellinfo.realm,
1706 if (linked && linkedcell != NULL) {
1707 afs_dprintf("Linked cell: %s\n", linkedcell);
1708 if ((status = auth_to_cell(context, linkedcell,
1709 cellinfo.realm, NULL)))
1712 if (linkedcell != NULL) {
1719 /* Then, log to all paths in the paths list */
1720 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1721 if ((status = auth_to_path(context, cur_node->data)))
1726 * If only one thing was logged to, we'll return the status
1727 * of the single call. Otherwise, we'll return a generic
1728 * something failed status.
1730 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1731 status = AKLOG_SOMETHINGSWRONG;
1734 /* If we are keeping track of zephyr subscriptions, print them. */
1736 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1737 printf("zsub: %s\n", cur_node->data);
1740 /* If we are keeping track of host information, print it. */
1742 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1743 printf("host: %s\n", cur_node->data);
1750 isdir(char *path, unsigned char *val)
1752 struct stat statbuf;
1754 if (lstat(path, &statbuf) < 0)
1757 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1765 static krb5_error_code
1766 get_credv5_akimpersonate(krb5_context context,
1768 krb5_principal service_principal,
1769 krb5_principal client_principal,
1772 int *allowed_enctypes,
1774 krb5_creds** out_creds /* out */ )
1776 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1777 krb5_error_code code;
1779 krb5_kt_cursor cursor[1];
1780 krb5_keytab_entry entry[1];
1782 krb5_creds *creds = 0;
1783 krb5_enctype enctype;
1785 krb5_keyblock session_key[1];
1787 Ticket ticket_reply[1];
1788 EncTicketPart enc_tkt_reply[1];
1789 krb5_address address[30];
1790 krb5_addresses faddr[1];
1792 time_t temp_time[2];
1794 krb5_ticket ticket_reply[1];
1795 krb5_enc_tkt_part enc_tkt_reply[1];
1796 krb5_address address[30], *faddr[30];
1800 static int any_enctype[] = {0};
1802 if (!(creds = malloc(sizeof *creds))) {
1806 if (!allowed_enctypes)
1807 allowed_enctypes = any_enctype;
1810 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1811 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1812 memset((char*)creds, 0, sizeof *creds);
1813 memset((char*)entry, 0, sizeof *entry);
1814 memset((char*)session_key, 0, sizeof *session_key);
1815 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1816 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1817 code = krb5_kt_resolve(context, keytab, &kt);
1820 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1822 afs_com_err(progname, code, "while resolving default keytab");
1826 if (service_principal) {
1827 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1828 code = krb5_kt_get_entry(context,
1835 if (allowed_enctypes[i])
1836 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1841 afs_com_err(progname, code,"while scanning keytab entries");
1845 krb5_keytab_entry new[1];
1847 memset(new, 0, sizeof *new);
1848 if ((code == krb5_kt_start_seq_get(context, kt, cursor))) {
1849 afs_com_err(progname, code, "while starting keytab scan");
1852 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1854 allowed_enctypes[i] && allowed_enctypes[i]
1855 != deref_entry_enctype(new); ++i)
1857 if ((!i || allowed_enctypes[i]) &&
1858 (best < 0 || best > i)) {
1859 krb5_free_keytab_entry_contents(context, entry);
1861 memset(new, 0, sizeof *new);
1862 } else krb5_free_keytab_entry_contents(context, new);
1864 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1865 afs_com_err(progname, i, "while ending keytab scan");
1870 afs_com_err(progname, code, "while scanning keytab");
1873 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1879 if ((code = krb5_generate_random_keyblock(context,
1880 deref_keyblock_enctype(session_key), session_key))) {
1881 afs_com_err(progname, code, "while making session key");
1884 enc_tkt_reply->flags.initial = 1;
1885 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1886 enc_tkt_reply->cname = client_principal->name;
1887 enc_tkt_reply->crealm = client_principal->realm;
1888 enc_tkt_reply->key = *session_key;
1890 static krb5_data empty_string;
1891 enc_tkt_reply->transited.contents = empty_string;
1893 enc_tkt_reply->authtime = starttime;
1894 enc_tkt_reply->starttime = temp_time;
1895 *enc_tkt_reply->starttime = starttime;
1897 enc_tkt_reply->renew_till = temp_time + 1;
1898 *enc_tkt_reply->renew_till = endtime;
1900 enc_tkt_reply->endtime = endtime;
1902 if ((code = krb5_c_make_random_key(context,
1903 deref_keyblock_enctype(session_key), session_key))) {
1904 afs_com_err(progname, code, "while making session key");
1907 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1908 #define DATACAST (unsigned char *)
1909 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1910 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1911 enc_tkt_reply->session = session_key;
1912 enc_tkt_reply->client = client_principal;
1914 static krb5_data empty_string;
1915 enc_tkt_reply->transited.tr_contents = empty_string;
1917 enc_tkt_reply->times.authtime = starttime;
1918 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1919 enc_tkt_reply->times.endtime = endtime;
1920 #endif /* USING_HEIMDAL */
1921 /* NB: We will discard address for now--ignoring caddr field
1922 in any case. MIT branch does what it always did. */
1924 if (paddress && *paddress) {
1925 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1928 faddr->val = address;
1930 for (i = 0; paddress[i]; ++i) {
1932 address[i].addr_type = KRB5_ADDRESS_INET;
1933 address[i].address.data = (void*)(paddress+i);
1934 address[i].address.length = sizeof(paddress[i]);
1937 address[i].magic = KV5M_ADDRESS;
1938 address[i].addrtype = ADDRTYPE_INET;
1940 address[i].addrtype = AF_INET;
1942 address[i].contents = (void*)(paddress+i);
1943 address[i].length = sizeof(int);
1944 faddr[i] = address+i;
1955 ticket_reply->sname = service_principal->name;
1956 ticket_reply->realm = service_principal->realm;
1958 { /* crypto block */
1959 krb5_crypto crypto = 0;
1960 unsigned char *buf = 0;
1961 size_t buf_size, buf_len;
1964 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
1965 enc_tkt_reply, &buf_len, code);
1967 afs_com_err(progname, code, "while encoding ticket");
1971 if(buf_len != buf_size) {
1972 afs_com_err(progname, code,
1973 "%u != %u while encoding ticket (internal ASN.1 encoder error",
1974 (unsigned int)buf_len, (unsigned int)buf_size);
1977 what = "krb5_crypto_init";
1978 code = krb5_crypto_init(context,
1979 &deref_entry_keyblock(entry),
1980 deref_entry_enctype(entry),
1983 what = "krb5_encrypt";
1984 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
1985 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
1988 if (crypto) krb5_crypto_destroy(context, crypto);
1990 afs_com_err(progname, code, "while %s", what);
1993 } /* crypto block */
1994 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
1995 ticket_reply->enc_part.kvno = temp_vno;
1996 *ticket_reply->enc_part.kvno = entry->vno;
1997 ticket_reply->tkt_vno = 5;
1999 ticket_reply->server = service_principal;
2000 ticket_reply->enc_part2 = enc_tkt_reply;
2001 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
2002 afs_com_err(progname, code, "while making ticket");
2005 ticket_reply->enc_part.kvno = entry->vno;
2008 /* Construct Creds */
2010 if ((code = krb5_copy_principal(context, service_principal,
2012 afs_com_err(progname, code, "while copying service principal");
2015 if ((code = krb5_copy_principal(context, client_principal,
2017 afs_com_err(progname, code, "while copying client principal");
2020 if ((code = krb5_copy_keyblock_contents(context, session_key,
2021 &deref_session_key(creds)))) {
2022 afs_com_err(progname, code, "while copying session key");
2027 creds->times.authtime = enc_tkt_reply->authtime;
2028 creds->times.starttime = *(enc_tkt_reply->starttime);
2029 creds->times.endtime = enc_tkt_reply->endtime;
2030 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2031 creds->flags.b = enc_tkt_reply->flags;
2033 creds->times = enc_tkt_reply->times;
2034 creds->ticket_flags = enc_tkt_reply->flags;
2036 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2038 else if ((code = krb5_copy_addresses(context,
2039 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2040 afs_com_err(progname, code, "while copying addresses");
2046 size_t creds_tkt_len;
2047 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2048 ticket_reply, &creds_tkt_len, code);
2050 afs_com_err(progname, code, "while encoding ticket");
2055 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2056 afs_com_err(progname, code, "while encoding ticket");
2059 creds->ticket = *temp;
2066 if (deref_enc_data(&ticket_reply->enc_part))
2067 free(deref_enc_data(&ticket_reply->enc_part));
2068 krb5_free_keytab_entry_contents(context, entry);
2069 if (client_principal)
2070 krb5_free_principal(context, client_principal);
2071 if (service_principal)
2072 krb5_free_principal(context, service_principal);
2074 krb5_cc_close(context, cc);
2076 krb5_kt_close(context, kt);
2077 if (creds) krb5_free_creds(context, creds);
2078 krb5_free_keyblock_contents(context, session_key);
2086 static krb5_error_code
2087 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2092 static krb5_principal client_principal = 0;
2094 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2095 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2097 memset(&increds, 0, sizeof(increds));
2098 /* ANL - instance may be ptr to a null string. Pass null then */
2099 if ((r = krb5_build_principal(context, &increds.server,
2100 strlen(realm), realm,
2102 (inst && strlen(inst)) ? inst : (void *) NULL,
2108 if (!_krb425_ccache) {
2109 r = krb5_cc_default(context, &_krb425_ccache);
2113 if (!client_principal) {
2115 r = krb5_parse_name(context, client, &client_principal);
2117 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2123 increds.client = client_principal;
2124 increds.times.endtime = 0;
2125 /* Ask for DES since that is what V4 understands */
2126 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2129 int allowed_enctypes[] = {
2130 ENCTYPE_DES_CBC_CRC, 0
2133 r = get_credv5_akimpersonate(context,
2142 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2149 get_user_realm(krb5_context context, char **realm)
2151 static krb5_principal client_principal = 0;
2152 krb5_error_code r = 0;
2156 if (!_krb425_ccache)
2157 krb5_cc_default(context, &_krb425_ccache);
2158 if (!client_principal) {
2160 r = krb5_parse_name(context, client, &client_principal);
2162 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2168 *realm = extract_realm(context, client_principal);