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
12 * Permission is granted to use, copy, create derivative works
13 * and redistribute this software and such derivative works
14 * for any purpose, so long as the name of the Linux Box
15 * Corporation is not used in any advertising or publicity
16 * pertaining to the use or distribution of this software
17 * without specific, written prior authorization. If the
18 * above copyright notice or any other identification of the
19 * Linux Box Corporation is included in any copy of any
20 * portion of this software, then the disclaimer below must
23 * This software is provided as is, without representation
24 * from the Linux Box Corporation as to its fitness for any
25 * purpose, and without warranty by the Linux Box Corporation
26 * of any kind, either express or implied, including
27 * without limitation the implied warranties of
28 * merchantability and fitness for a particular purpose. The
29 * regents of the Linux Box Corporation shall not be liable
30 * for any damages, including special, indirect, incidental, or
31 * consequential damages, with respect to any claim arising
32 * out of or in connection with the use of the software, even
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 #if defined(HAVE_ET_COM_ERR_H)
68 #include <et/com_err.h>
73 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
74 #include <afs/com_err.h>
77 #include <afs/param.h>
79 #include <sys/ioccom.h>
82 /* Prevent inclusion of des.h to avoid conflicts with des types */
83 #define NO_DES_H_INCLUDE
86 #include <afs/cellconfig.h>
88 #include <afs/venus.h>
89 #include <afs/ptserver.h>
90 #include <afs/ptuser.h>
91 #include <afs/pterror.h>
92 #include <afs/dirpath.h>
93 #include <afs/afsutil.h>
96 #include "linked_list.h"
98 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
101 #ifdef HAVE_KRB5_CREDS_SESSION
102 #define USING_HEIMDAL 1
108 #ifndef AFS_TRY_FULL_PRINC
109 #define AFS_TRY_FULL_PRINC 1
110 #endif /* AFS_TRY_FULL_PRINC */
112 #define AKLOG_TRYAGAIN -1
113 #define AKLOG_SUCCESS 0
114 #define AKLOG_USAGE 1
115 #define AKLOG_SOMETHINGSWRONG 2
117 #define AKLOG_KERBEROS 4
118 #define AKLOG_TOKEN 5
119 #define AKLOG_BADPATH 6
135 /* RedHat 4.x doesn't seem to define this */
136 #define MAXSYMLINKS 5
139 #define DIR '/' /* Character that divides directories */
140 #define DIRSTRING "/" /* String form of above */
141 #define VOLMARKER ':' /* Character separating cellname from mntpt */
142 #define VOLMARKERSTRING ":" /* String form of above */
146 char realm[REALM_SZ];
149 static krb5_ccache _krb425_ccache = NULL;
152 * Why doesn't AFS provide these prototypes?
155 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
161 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
162 static int isdir(char *, unsigned char *);
163 static krb5_error_code get_credv5(krb5_context context, char *, char *,
164 char *, krb5_creds **);
165 static int get_user_realm(krb5_context, char **);
167 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
168 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
169 x == KRB5KRB_ERR_GENERIC)
171 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
173 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
174 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
175 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
176 #define realm_data(c, p) krb5_princ_realm(c, p)->data
177 #define realm_len(c, p) krb5_princ_realm(c, p)->length
179 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
181 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
182 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
183 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
184 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
185 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
188 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
191 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
192 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
196 krb5_encrypt_tkt_part(krb5_context context,
197 const krb5_keyblock *key,
204 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
206 if ((code = krb5_c_encrypt_length(context, key->enctype,
207 data->length, &enclen)))
209 ticket->enc_part.ciphertext.length = enclen;
210 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
214 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
215 0, data, &ticket->enc_part))) {
216 free(ticket->enc_part.ciphertext.data);
217 ticket->enc_part.ciphertext.data = 0;
229 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
231 #define get_cred_keydata(c) c->keyblock.contents
232 #define get_cred_keylen(c) c->keyblock.length
233 #define get_creds_enctype(c) c->keyblock.enctype
235 #elif defined(HAVE_KRB5_CREDS_SESSION)
237 #define get_cred_keydata(c) c->session.keyvalue.data
238 #define get_cred_keylen(c) c->session.keyvalue.length
239 #define get_creds_enctype(c) c->session.keytype
242 #error "Must have either keyblock or session member of krb5_creds"
245 #if !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
246 #define krb5_524_convert_creds krb524_convert_creds_kdc
247 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC)
248 #define HAVE_NO_KRB5_524
252 #define deref_keyblock_enctype(kb) \
255 #define deref_entry_keyblock(entry) \
258 #define deref_session_key(creds) \
261 #define deref_enc_tkt_addrs(tkt) \
264 #define deref_enc_length(enc) \
265 ((enc)->cipher.length)
267 #define deref_enc_data(enc) \
270 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
273 #define deref_keyblock_enctype(kb) \
276 #define deref_entry_keyblock(entry) \
279 #define deref_session_key(creds) \
282 #define deref_enc_tkt_addrs(tkt) \
285 #define deref_enc_length(enc) \
286 ((enc)->ciphertext.length)
288 #define deref_enc_data(enc) \
289 ((enc)->ciphertext.data)
293 #define deref_entry_enctype(entry) \
294 deref_keyblock_enctype(&deref_entry_keyblock(entry))
297 * Provide a replacement for strerror if we don't have it
300 #ifndef HAVE_STRERROR
301 extern char *sys_errlist[];
302 #define strerror(x) sys_errlist[x]
303 #endif /* HAVE_STRERROR */
305 static char *progname = NULL; /* Name of this program */
306 static int dflag = FALSE; /* Give debugging information */
307 static int noauth = FALSE; /* If true, don't try to get tokens */
308 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
309 static int hosts = FALSE; /* Are we keeping track of hosts? */
310 static int noprdb = FALSE; /* Skip resolving name to id? */
311 static int linked = FALSE; /* try for both AFS nodes */
312 static int afssetpag = FALSE; /* setpag for AFS */
313 static int force = FALSE; /* Bash identical tokens? */
314 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
315 static char *keytab = NULL; /* keytab for akimpersonate */
316 static char *client = NULL; /* client principal for akimpersonate */
317 static linked_list zsublist; /* List of zephyr subscriptions */
318 static linked_list hostlist; /* List of host addresses */
319 static linked_list authedcells; /* List of cells already logged to */
321 /* A com_error bodge. The idea here is that this routine lets us lookup
322 * things in the system com_err, if the AFS one just tells us the error
327 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
334 const char *str = afs_error_message(code);
335 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
336 #ifdef HAVE_KRB5_SVC_GET_MSG
337 krb5_svc_get_msg(code,&str);
339 str = error_message(code);
344 #ifdef HAVE_KRB5_SVC_GET_MSG
345 krb5_free_string(str);
349 vfprintf(stderr, fmt, ap);
356 afs_dprintf(char *fmt, ...) {
366 copy_cellinfo(cellinfo_t *cellinfo)
368 cellinfo_t *new_cellinfo;
370 if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t))))
371 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
373 return ((char *)new_cellinfo);
378 get_cellconfig(char *cell, struct afsconf_cell *cellconfig, char **local_cell)
380 int status = AKLOG_SUCCESS;
381 struct afsconf_dir *configdir;
383 memset(cellconfig, 0, sizeof(*cellconfig));
385 *local_cell = malloc(MAXCELLCHARS);
386 if (*local_cell == NULL) {
387 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
392 if (!(configdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH))) {
394 "%s: can't get afs configuration (afsconf_Open(%s))\n",
395 progname, AFSDIR_CLIENT_ETC_DIRPATH);
399 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
400 fprintf(stderr, "%s: can't determine local cell.\n", progname);
404 if ((cell == NULL) || (cell[0] == 0))
407 /* XXX - This function modifies 'cell' by passing it through lcstring */
408 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
409 fprintf(stderr, "%s: Can't get information about cell %s.\n",
414 afsconf_Close(configdir);
420 extract_realm(krb5_context context, krb5_principal princ) {
424 len = realm_len(context, princ);
425 if (len > REALM_SZ-1)
428 realm = malloc(sizeof(char) * (len+1));
432 strncpy(realm, realm_data(context, princ), len);
439 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
440 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
441 krb5_error_code code;
446 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
450 *realm = extract_realm(context, ticket->server);
454 krb5_free_ticket(context, ticket);
464 * Get a Kerberos service ticket to use as the base of an rxkad token for
468 * An initialized Kerberos v5 context
470 * The realm to look in for the service principal. If NULL, then the
471 * realm is determined from the cell name or the user's credentials
472 * (see below for the heuristics used)
474 * The cell information for the cell to obtain a ticket for
476 * A Kerberos credentials structure containing the ticket acquired
477 * for the cell. This is a dynamically allocated structure, which
478 * should be freed by using the appropriate Kerberos API function.
479 * @param[out] realmUsed
480 * The realm in which the cell's service principal was located. If
481 * unset, then the principal was located in the same realm as the
482 * current user. This is a malloc'd string which should be freed
486 * 0 on success, an error value upon failure
489 * This code tries principals in the following, much debated,
492 * If the realm is specified on the command line we do
493 * - afs/cell@COMMAND-LINE-REALM
494 * - afs@COMMAND-LINE-REALM
497 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
498 * - afs/cell@krb5_get_host_realm(db-server)
499 * Then, if krb5_get_host_realm(db-server) is non-empty
500 * - afs@ krb5_get_host_realm(db-server)
502 * - afs/cell@ upper-case-domain-of-db-server
503 * - afs@ upper-case-domain-of-db-server
505 * In all cases, the 'afs@' variant is only tried where the
506 * cell and the realm match case-insensitively.
510 rxkad_get_ticket(krb5_context context, char *realm,
511 struct afsconf_cell *cell,
512 krb5_creds **v5cred, char **realmUsed) {
513 char *realm_of_cell = NULL;
514 char *realm_of_user = NULL;
515 char *realm_from_princ = NULL;
521 if ((status = get_user_realm(context, &realm_of_user))) {
522 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
523 afs_com_err(progname, status, " while getting realm");
524 status = AKLOG_KERBEROS;
531 /* Cell on command line - use that one */
532 if (realm && realm[0]) {
533 realm_of_cell = realm;
534 status = AKLOG_TRYAGAIN;
535 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
537 /* Initially, try using afs/cell@USERREALM */
538 afs_dprintf("Trying to authenticate to user's realm %s.\n",
540 realm_of_cell = realm_of_user;
541 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
544 /* If that failed, try to determine the realm from the name of
545 * one of the DB servers */
546 if (TRYAGAIN(status)) {
547 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
548 if (!realm_of_cell) {
549 fprintf(stderr, "%s: Couldn't figure out realm for cell "
550 "%s.\n", progname, cell->name);
554 if (realm_of_cell[0])
555 afs_dprintf("We've deduced that we need to authenticate"
556 " to realm %s.\n", realm_of_cell);
558 afs_dprintf("We've deduced that we need to authenticate "
559 "using referrals.\n");
563 if (TRYAGAIN(status)) {
564 /* If we've got the full-princ-first option, or we're in a
565 * different realm from the cell - use the cell name as the
567 if (AFS_TRY_FULL_PRINC ||
568 strcasecmp(cell->name, realm_of_cell)!=0) {
569 status = get_credv5(context, AFSKEY, cell->name,
570 realm_of_cell, v5cred);
572 /* If we failed & we've got an empty realm, then try
573 * calling afs_realm_for_cell again. */
574 if (TRYAGAIN(status) && !realm_of_cell[0]) {
575 /* This time, get the realm by taking the domain
576 * component of the db server and make it upper case */
577 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
578 if (!realm_of_cell) {
580 "%s: Couldn't figure out realm for cell %s.\n",
581 progname, cell->name);
584 afs_dprintf("We've deduced that we need to authenticate"
585 " to realm %s.\n", realm_of_cell);
587 status = get_credv5(context, AFSKEY, cell->name,
588 realm_of_cell, v5cred);
591 /* If the realm and cell name match, then try without an
592 * instance, but only if realm is non-empty */
594 if (TRYAGAIN(status) &&
595 strcasecmp(cell->name, realm_of_cell) == 0) {
596 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
598 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
599 status = get_credv5(context, AFSKEY, cell->name,
600 realm_of_cell, v5cred);
605 /* Try to find a service principal for this cell.
606 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
607 * the first attempt, so we try twice to be sure */
609 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
616 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
617 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
618 progname, cell->name);
619 afs_com_err(progname, status, "while getting AFS tickets");
620 status = AKLOG_KERBEROS;
624 /* If we've got a valid ticket, and we still don't know the realm name
625 * try to figure it out from the contents of the ticket
627 if (strcmp(realm_of_cell, "") == 0) {
628 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
631 "%s: Couldn't decode ticket to determine realm for "
633 progname, cell->name);
635 if (realm_from_princ)
636 realm_of_cell = realm_from_princ;
640 /* If the realm of the user and cell differ, then we need to use the
641 * realm when we later construct the user's principal */
642 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
643 *realmUsed = realm_of_user;
646 if (realm_from_princ)
647 free(realm_from_princ);
648 if (realm_of_user && *realmUsed == NULL)
655 * Build an rxkad token from a Kerberos ticket, using only local tools (that
656 * is, without using a 524 conversion service)
659 * An initialised Kerberos 5 context
661 * A Kerberos credentials structure containing a suitable service ticket
662 * @param[out] tokenPtr
663 * An AFS token structure containing an rxkad token. This is a malloc'd
664 * structure which should be freed by the caller.
665 * @param[out[ userPtr
666 * A string containing the principal of the user to whom the token was
667 * issued. This is a malloc'd block which should be freed by the caller.
670 * 0 on success, an error value upon failure
673 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
674 struct ktc_token **tokenPtr, char **userPtr) {
675 char username[BUFSIZ];
676 struct ktc_token *token;
677 #ifdef HAVE_NO_KRB5_524
682 char k4name[ANAME_SZ];
683 char k4inst[INST_SZ];
684 char k4realm[REALM_SZ];
687 afs_dprintf("Using Kerberos V5 ticket natively\n");
692 #ifndef HAVE_NO_KRB5_524
693 status = krb5_524_conv_principal (context, v5cred->client,
698 afs_com_err(progname, status, "while converting principal "
699 "to Kerberos V4 format");
700 return AKLOG_KERBEROS;
702 strcpy (username, k4name);
704 strcat (username, ".");
705 strcat (username, k4inst);
708 len = min(get_princ_len(context, v5cred->client, 0),
709 second_comp(context, v5cred->client) ?
710 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
711 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
712 username[len] = '\0';
714 if (second_comp(context, v5cred->client)) {
715 strcat(username, ".");
716 p = username + strlen(username);
717 len = min(get_princ_len(context, v5cred->client, 1),
718 MAXKTCNAMELEN - strlen(username) - 1);
719 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
724 token = malloc(sizeof(struct ktc_token));
728 memset(token, 0, sizeof(struct ktc_token));
730 token->kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
731 token->startTime = v5cred->times.starttime;;
732 token->endTime = v5cred->times.endtime;
733 memcpy(&token->sessionKey, get_cred_keydata(v5cred),
734 get_cred_keylen(v5cred));
735 token->ticketLen = v5cred->ticket.length;
736 memcpy(token->ticket, v5cred->ticket.data, token->ticketLen);
739 *userPtr = strdup(username);
745 * Convert a Keberos ticket to an rxkad token, using information obtained
746 * from an external Kerberos 5->4 conversion service. If the code is built
747 * with HAVE_NO_KRB5_524 then this is a stub function which will always
748 * return success without a token.
751 * An initialised Kerberos 5 context
753 * A Kerberos credentials structure containing a suitable service ticket
754 * @param[out] tokenPtr
755 * An AFS token structure containing an rxkad token. This is a malloc'd
756 * structure which should be freed by the caller.
757 * @param[out[ userPtr
758 * A string containing the principal of the user to whom the token was
759 * issued. This is a malloc'd block which should be freed by the caller.
762 * 0 on success, an error value upon failure
765 #ifdef HAVE_NO_KRB5_524
767 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
768 struct ktc_token **tokenPtr, char **userPtr) {
776 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
777 struct ktc_token **tokenPtr, char **userPtr) {
779 char username[BUFSIZ];
780 struct ktc_token *token;
786 afs_dprintf("Using Kerberos 524 translator service\n");
788 status = krb5_524_convert_creds(context, v5cred, &cred);
791 afs_com_err(progname, status, "while converting tickets "
792 "to Kerberos V4 format");
793 return AKLOG_KERBEROS;
796 strcpy (username, cred.pname);
798 strcat (username, ".");
799 strcat (username, cred.pinst);
802 token = malloc(sizeof(struct ktc_token));
803 memset(token, 0, sizeof(struct ktc_token));
805 token->kvno = cred.kvno;
806 token->startTime = cred.issue_date;
808 * It seems silly to go through a bunch of contortions to
809 * extract the expiration time, when the v5 credentials already
810 * has the exact time! Let's use that instead.
812 * Note that this isn't a security hole, as the expiration time
813 * is also contained in the encrypted token
815 token->endTime = v5cred->times.endtime;
816 memcpy(&token->sessionKey, cred.session, 8);
817 token->ticketLen = cred.ticket_st.length;
818 memcpy(token->ticket, cred.ticket_st.dat, token->ticketLen);
825 * This function gets an rxkad token for a given cell.
828 * An initialized Kerberos v5 context
830 * The cell information for the cell which we're obtaining a token for
832 * The realm to look in for the service principal. If NULL, then the
833 * realm is determined from the cell name or the user's credentials
834 * (see the documentation for rxkad_get_ticket)
836 * The rxkad token produced. This is a malloc'd structure which should
837 * be freed by the caller.
838 * @parma[out] authuser
839 * A string containing the principal of the user to whom the token was
840 * issued. This is a malloc'd block which should be freed by the caller.
841 * @param[out] foreign
842 * Whether the user is considered as 'foreign' to the realm of the cell.
845 * 0 on success, an error value upon failuer
848 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
849 struct ktc_token **token, char **authuser, int *foreign) {
851 char *realmUsed = NULL;
852 char *username = NULL;
860 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
865 status = rxkad_get_converted_token(context, v5cred, token, &username);
867 status = rxkad_build_native_token(context, v5cred, token, &username);
872 /* We now have the username, plus the realm name, so stitch them together
873 * to give us the name that the ptserver will know the user by */
874 if (realmUsed == NULL) {
875 *authuser = username;
879 len = strlen(username)+strlen(realmUsed)+2;
880 *authuser = malloc(len);
881 afs_snprintf(*authuser, len, "%s@%s", username, realmUsed);
895 get_kernel_token(struct afsconf_cell *cell, struct ktc_token **tokenPtr) {
896 struct ktc_principal client, server;
897 struct ktc_token *token;
902 strncpy(server.name, AFSKEY, MAXKTCNAMELEN - 1);
903 strncpy(server.instance, AFSINST, MAXKTCNAMELEN - 1);
904 strncpy(server.cell, cell->name, MAXKTCREALMLEN - 1);
906 token = malloc(sizeof(struct ktc_token));
910 memset(token, 0, sizeof(struct ktc_token));
912 ret = ktc_GetToken(&server, token, sizeof(struct ktc_token), &client);
923 set_kernel_token(struct afsconf_cell *cell, char *username,
924 struct ktc_token *token, int setpag)
926 struct ktc_principal client, server;
928 strncpy(client.name, username, MAXKTCNAMELEN - 1);
929 strcpy(client.instance, "");
930 strncpy(client.cell, cell->name, MAXKTCREALMLEN - 1);
932 strncpy(server.name, AFSKEY, MAXKTCNAMELEN - 1);
933 strncpy(server.instance, AFSINST, MAXKTCNAMELEN - 1);
934 strncpy(server.cell, cell->name, MAXKTCREALMLEN - 1);
936 return ktc_SetToken(&server, token, &client, setpag);
940 tokens_equal(struct ktc_token *tokenA, struct ktc_token *tokenB) {
941 return (tokenA != NULL && tokenB != NULL &&
942 tokenA->kvno == tokenB->kvno &&
943 tokenA->ticketLen == tokenB->ticketLen &&
944 !memcmp(&tokenA->sessionKey, &tokenB->sessionKey,
945 sizeof(tokenA->sessionKey)) &&
946 !memcmp(tokenA->ticket, tokenB->ticket, tokenA->ticketLen));
950 * Log to a cell. If the cell has already been logged to, return without
951 * doing anything. Otherwise, log to it and mark that it has been logged
955 auth_to_cell(krb5_context context, char *cell, char *realm, char **linkedcell)
957 int status = AKLOG_SUCCESS;
959 char *username = NULL; /* To hold client username structure */
960 afs_int32 viceId; /* AFS uid of user */
962 char *local_cell = NULL;
963 struct ktc_token *token;
964 struct ktc_token *btoken;
965 struct afsconf_cell cellconf;
967 /* NULL or empty cell returns information on local cell */
968 if ((status = get_cellconfig(cell, &cellconf, &local_cell)))
971 if (linkedcell != NULL) {
972 if (cellconf.linkedCell != NULL) {
973 *linkedcell = strdup(cellconf.linkedCell);
974 if (*linkedcell == NULL) {
983 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
984 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
985 status = AKLOG_SUCCESS;
990 * Record that we have attempted to log to this cell. We do this
991 * before we try rather than after so that we will not try
992 * and fail repeatedly for one cell.
994 ll_string(&authedcells, ll_s_add, cellconf.name);
997 * Record this cell in the list of zephyr subscriptions. We may
998 * want zephyr subscriptions even if authentication fails.
999 * If this is done after we attempt to get tokens, aklog -zsubs
1000 * can return something different depending on whether or not we
1001 * are in -noauth mode.
1003 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
1005 "%s: failure adding cell %s to zephyr subscriptions list.\n",
1006 progname, cellconf.name);
1009 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
1011 "%s: failure adding cell %s to zephyr subscriptions list.\n",
1012 progname, local_cell);
1017 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
1018 cellconf.hostName[0]);
1020 status = rxkad_get_token(context, &cellconf, realm, &token,
1021 &username, &isForeign);
1027 !get_kernel_token(&cellconf, &btoken) &&
1028 tokens_equal(token, btoken)) {
1029 afs_dprintf("Identical tokens already exist; skipping.\n");
1030 status = AKLOG_SUCCESS;
1039 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1042 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1045 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1046 status = pr_SNameToId (username, &viceId);
1049 afs_dprintf("Error %d\n", status);
1051 afs_dprintf("Id %d\n", (int) viceId);
1055 * This code is taken from cklog -- it lets people
1056 * automatically register with the ptserver in foreign cells
1059 #ifdef ALLOW_REGISTER
1060 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1061 afs_dprintf("doing first-time registration of %s at %s\n",
1062 username, cellconf.name);
1065 status = set_kernel_token(&cellconf, username, token, 0);
1067 afs_com_err(progname, status,
1068 "while obtaining tokens for cell %s",
1070 status = AKLOG_TOKEN;
1074 * In case you're wondering, we don't need to change the
1075 * filename here because we're still connecting to the
1076 * same cell -- we're just using a different authentication
1080 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1082 printf("Error %d\n", status);
1085 if ((status = pr_CreateUser(username, &viceId))) {
1086 fprintf(stderr, "%s: %s so unable to create remote PTS "
1087 "user %s in cell %s (status: %d).\n", progname,
1088 afs_error_message(status), username, cellconf.name,
1090 viceId = ANONYMOUSID;
1092 printf("created cross-cell entry for %s (Id %d) at %s\n",
1093 username, viceId, cellconf.name);
1096 #endif /* ALLOW_REGISTER */
1099 * This is a crock, but it is Transarc's crock, so we have to play
1100 * along in order to get the functionality. The way the afs id is
1101 * stored is as a string in the username field of the token.
1102 * Contrary to what you may think by looking at the code for
1103 * tokens, this hack (AFS ID %d) will not work if you change %d
1104 * to something else.
1107 if ((status == 0) && (viceId != ANONYMOUSID)) {
1109 if (afs_asprintf(&username, "AFS ID %d", (int) viceId) < 0) {
1117 afs_dprintf("Set username to %s\n", username);
1119 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1121 #ifndef AFS_AIX51_ENV
1122 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1123 * this routine, it will not add the token. It is not clear what
1124 * is going on here! So we will do the following operation.
1125 * On AIX 5, it causes the parent program to die, so we won't.
1127 write(2,"",0); /* dummy write */
1129 status = set_kernel_token(&cellconf, username, token, afssetpag);
1131 afs_com_err(progname, status, "while obtaining tokens for cell %s",
1133 status = AKLOG_TOKEN;
1137 afs_dprintf("Noauth mode; not authenticating.\n");
1149 get_afs_mountpoint(char *file, char *mountpoint, int size)
1152 char V ='V'; /* AFS has problem on Sun with pioctl */
1154 char our_file[MAXPATHLEN + 1];
1156 char *last_component;
1157 struct ViceIoctl vio;
1158 char cellname[BUFSIZ];
1160 memset(our_file, 0, sizeof(our_file));
1161 strcpy(our_file, file);
1163 if ((last_component = strrchr(our_file, DIR))) {
1164 *last_component++ = 0;
1165 parent_dir = our_file;
1168 last_component = our_file;
1172 memset(cellname, 0, sizeof(cellname));
1174 vio.in = last_component;
1175 vio.in_size = strlen(last_component)+1;
1176 vio.out_size = size;
1177 vio.out = mountpoint;
1179 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1180 if (strchr(mountpoint, VOLMARKER) == NULL) {
1182 vio.in_size = strlen(file) + 1;
1183 vio.out_size = sizeof(cellname);
1186 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1187 strcat(cellname, VOLMARKERSTRING);
1188 strcat(cellname, mountpoint + 1);
1189 memset(mountpoint + 1, 0, size - 1);
1190 strcpy(mountpoint + 1, cellname);
1200 * This routine each time it is called returns the next directory
1201 * down a pathname. It resolves all symbolic links. The first time
1202 * it is called, it should be called with the name of the path
1203 * to be descended. After that, it should be called with the arguemnt
1207 next_path(char *origpath)
1209 static char path[MAXPATHLEN + 1];
1210 static char pathtocheck[MAXPATHLEN + 1];
1212 int link = FALSE; /* Is this a symbolic link? */
1213 char linkbuf[MAXPATHLEN + 1];
1214 char tmpbuf[MAXPATHLEN + 1];
1216 static char *last_comp; /* last component of directory name */
1217 static char *elast_comp; /* End of last component */
1221 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1223 /* If we are given something for origpath, we are initializing only. */
1225 memset(path, 0, sizeof(path));
1226 memset(pathtocheck, 0, sizeof(pathtocheck));
1227 strcpy(path, origpath);
1233 /* We were not given origpath; find then next path to check */
1235 /* If we've gotten all the way through already, return NULL */
1236 if (last_comp == NULL)
1240 while (*last_comp == DIR)
1241 strncat(pathtocheck, last_comp++, 1);
1242 len = (elast_comp = strchr(last_comp, DIR))
1243 ? elast_comp - last_comp : strlen(last_comp);
1244 strncat(pathtocheck, last_comp, len);
1245 memset(linkbuf, 0, sizeof(linkbuf));
1246 if ((link = (readlink(pathtocheck, linkbuf,
1247 sizeof(linkbuf)) > 0))) {
1248 if (++symlinkcount > MAXSYMLINKS) {
1249 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1250 exit(AKLOG_BADPATH);
1252 memset(tmpbuf, 0, sizeof(tmpbuf));
1254 strcpy(tmpbuf, elast_comp);
1255 if (linkbuf[0] == DIR) {
1257 * If this is a symbolic link to an absolute path,
1258 * replace what we have by the absolute path.
1260 memset(path, 0, strlen(path));
1261 memcpy(path, linkbuf, sizeof(linkbuf));
1262 strcat(path, tmpbuf);
1265 memset(pathtocheck, 0, sizeof(pathtocheck));
1269 * If this is a symbolic link to a relative path,
1270 * replace only the last component with the link name.
1272 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1273 strcat(path, tmpbuf);
1275 if ((t = strrchr(pathtocheck, DIR))) {
1277 memset(t, 0, strlen(t));
1280 memset(pathtocheck, 0, sizeof(pathtocheck));
1284 last_comp = elast_comp;
1288 return(pathtocheck);
1292 add_hosts(char *file)
1295 char V = 'V'; /* AFS has problem on SunOS */
1297 struct ViceIoctl vio;
1298 char outbuf[BUFSIZ];
1304 memset(outbuf, 0, sizeof(outbuf));
1306 vio.out_size = sizeof(outbuf);
1310 afs_dprintf("Getting list of hosts for %s\n", file);
1312 /* Don't worry about errors. */
1313 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1314 phosts = (long *) outbuf;
1317 * Lists hosts that we care about. If ALLHOSTS is defined,
1318 * then all hosts that you ever may possible go through are
1319 * included in this list. If not, then only hosts that are
1320 * the only ones appear. That is, if a volume you must use
1321 * is replaced on only one server, that server is included.
1322 * If it is replicated on many servers, then none are included.
1323 * This is not perfect, but the result is that people don't
1324 * get subscribed to a lot of instances of FILSRV that they
1325 * probably won't need which reduces the instances of
1326 * people getting messages that don't apply to them.
1329 if (phosts[1] != '\0')
1332 for (i = 0; phosts[i]; i++) {
1334 in.s_addr = phosts[i];
1335 afs_dprintf("Got host %s\n", inet_ntoa(in));
1336 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1338 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1339 afs_dprintf("Got host %s\n", hp->h_name);
1340 ll_string(&zsublist, ll_s_add, hp->h_name);
1347 * This routine descends through a path to a directory, logging to
1348 * every cell it encounters along the way.
1351 auth_to_path(krb5_context context, char *path)
1353 int status = AKLOG_SUCCESS;
1354 int auth_status = AKLOG_SUCCESS;
1357 char pathtocheck[MAXPATHLEN + 1];
1358 char mountpoint[MAXPATHLEN + 1];
1367 strcpy(pathtocheck, path);
1369 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1370 fprintf(stderr, "Unable to find current working directory:\n");
1371 fprintf(stderr, "%s\n", pathtocheck);
1372 fprintf(stderr, "Try an absolute pathname.\n");
1373 exit(AKLOG_BADPATH);
1376 strcat(pathtocheck, DIRSTRING);
1377 strcat(pathtocheck, path);
1380 next_path(pathtocheck);
1382 /* Go on to the next level down the path */
1383 while ((nextpath = next_path(NULL))) {
1384 strcpy(pathtocheck, nextpath);
1385 afs_dprintf("Checking directory %s\n", pathtocheck);
1387 * If this is an afs mountpoint, determine what cell from
1388 * the mountpoint name which is of the form
1389 * #cellname:volumename or %cellname:volumename.
1391 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1392 /* skip over the '#' or '%' */
1393 cell = mountpoint + 1;
1394 /* Add this (cell:volumename) to the list of zsubs */
1396 ll_string(&zsublist, ll_s_add, cell);
1398 add_hosts(pathtocheck);
1399 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1401 if ((auth_status = auth_to_cell(context, cell, NULL, NULL))) {
1402 if (status == AKLOG_SUCCESS)
1403 status = auth_status;
1404 else if (status != auth_status)
1405 status = AKLOG_SOMETHINGSWRONG;
1410 if (isdir(pathtocheck, &isdirectory) < 0) {
1412 * If we've logged and still can't stat, there's
1415 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1416 pathtocheck, strerror(errno));
1417 return(AKLOG_BADPATH);
1419 else if (! isdirectory) {
1420 /* Allow only directories */
1421 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1423 return(AKLOG_BADPATH);
1433 /* Print usage message and exit */
1437 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1438 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1439 "[[-p | -path] pathname]\n",
1440 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1442 #ifndef HAVE_NO_KRB5_524
1446 fprintf(stderr, " -d gives debugging information.\n");
1447 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1448 fprintf(stderr, " pathname is the name of a directory to which ");
1449 fprintf(stderr, "you wish to authenticate.\n");
1450 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1451 fprintf(stderr, " -hosts gives host address information.\n");
1452 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1453 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1454 fprintf(stderr, " -force means replace identical tickets. \n");
1455 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1456 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1457 #ifndef HAVE_NO_KRB5_524
1458 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1460 fprintf(stderr, " No commandline arguments means ");
1461 fprintf(stderr, "authenticate to the local cell.\n");
1462 fprintf(stderr, "\n");
1467 main(int argc, char *argv[])
1469 krb5_context context;
1470 int status = AKLOG_SUCCESS;
1472 int somethingswrong = FALSE;
1474 cellinfo_t cellinfo;
1476 extern char *progname; /* Name of this program */
1478 int cmode = FALSE; /* Cellname mode */
1479 int pmode = FALSE; /* Path name mode */
1481 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1482 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1483 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1485 linked_list cells; /* List of cells to log to */
1486 linked_list paths; /* List of paths to log to */
1490 memset(&cellinfo, 0, sizeof(cellinfo));
1492 memset(realm, 0, sizeof(realm));
1493 memset(cell, 0, sizeof(cell));
1494 memset(path, 0, sizeof(path));
1502 /* Store the program name here for error messages */
1503 if ((progname = strrchr(argv[0], DIR)))
1508 krb5_init_context(&context);
1509 initialize_KTC_error_table ();
1510 initialize_U_error_table();
1511 initialize_RXK_error_table();
1512 initialize_ACFG_error_table();
1513 initialize_PT_error_table();
1514 afs_set_com_err_hook(redirect_errors);
1517 * Enable DES enctypes, which are currently still required for AFS.
1518 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1521 #if defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1522 krb5_allow_weak_crypto(context, 1);
1523 #elif defined(HAVE_KRB5_ENCTYPE_ENABLE)
1524 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1526 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1529 /* Initialize list of cells to which we have authenticated */
1530 ll_init(&authedcells);
1532 /* Parse commandline arguments and make list of what to do. */
1533 for (i = 1; i < argc; i++) {
1534 if (strcmp(argv[i], "-d") == 0)
1536 else if (strcmp(argv[i], "-noauth") == 0)
1538 else if (strcmp(argv[i], "-zsubs") == 0)
1540 else if (strcmp(argv[i], "-hosts") == 0)
1542 else if (strcmp(argv[i], "-noprdb") == 0)
1544 else if (strcmp(argv[i], "-linked") == 0)
1546 else if (strcmp(argv[i], "-force") == 0)
1548 #ifndef HAVE_NO_KRB5_524
1549 else if (strcmp(argv[i], "-524") == 0)
1552 else if (strcmp(argv[i], "-setpag") == 0)
1554 else if (((strcmp(argv[i], "-cell") == 0) ||
1555 (strcmp(argv[i], "-c") == 0)) && !pmode)
1558 strcpy(cell, argv[i]);
1562 else if ((strcmp(argv[i], "-keytab") == 0))
1568 else if ((strcmp(argv[i], "-principal") == 0))
1574 else if (((strcmp(argv[i], "-path") == 0) ||
1575 (strcmp(argv[i], "-p") == 0)) && !cmode)
1578 strcpy(path, argv[i]);
1583 else if (argv[i][0] == '-')
1585 else if (!pmode && !cmode) {
1586 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1587 (strcmp(argv[i], "..") == 0)) {
1589 strcpy(path, argv[i]);
1593 strcpy(cell, argv[i]);
1600 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1603 strcpy(realm, argv[i]);
1607 /* Add this cell to list of cells */
1608 strcpy(cellinfo.cell, cell);
1609 strcpy(cellinfo.realm, realm);
1610 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1612 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1613 ll_add_data(cur_node, new_cellinfo);
1616 "%s: failure copying cellinfo.\n", progname);
1621 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1625 memset(&cellinfo, 0, sizeof(cellinfo));
1627 memset(cell, 0, sizeof(cell));
1628 memset(realm, 0, sizeof(realm));
1631 /* Add this path to list of paths */
1632 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1634 if ((new_path = strdup(path)))
1635 ll_add_data(cur_node, new_path);
1637 fprintf(stderr, "%s: failure copying path name.\n",
1643 fprintf(stderr, "%s: failure adding path to paths list.\n",
1648 memset(path, 0, sizeof(path));
1652 /* If nothing was given, log to the local cell. */
1653 if ((cells.nelements + paths.nelements) == 0) {
1656 status = auth_to_cell(context, NULL, NULL, &linkedcell);
1658 /* If this cell is linked to a DCE cell, and user requested -linked,
1659 * get tokens for both. This is very useful when the AFS cell is
1660 * linked to a DFS cell and this system does not also have DFS.
1663 if (!status && linked && linkedcell != NULL) {
1664 afs_dprintf("Linked cell: %s\n", linkedcell);
1665 status = auth_to_cell(context, linkedcell, NULL, NULL);
1673 * Local hack - if the person has a file in their home
1674 * directory called ".xlog", read that for a list of
1675 * extra cells to authenticate to
1678 if ((pwd = getpwuid(getuid())) != NULL) {
1681 char fcell[100], xlog_path[512];
1683 strcpy(xlog_path, pwd->pw_dir);
1684 strcat(xlog_path, "/.xlog");
1686 if ((stat(xlog_path, &sbuf) == 0) &&
1687 ((f = fopen(xlog_path, "r")) != NULL)) {
1689 afs_dprintf("Reading %s for cells to authenticate to.\n",
1692 while (fgets(fcell, 100, f) != NULL) {
1695 fcell[strlen(fcell) - 1] = '\0';
1697 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1699 auth_status = auth_to_cell(context, fcell, NULL, NULL);
1700 if (status == AKLOG_SUCCESS)
1701 status = auth_status;
1703 status = AKLOG_SOMETHINGSWRONG;
1709 /* Log to all cells in the cells list first */
1710 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1711 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1712 if ((status = auth_to_cell(context, cellinfo.cell, cellinfo.realm,
1716 if (linked && linkedcell != NULL) {
1717 afs_dprintf("Linked cell: %s\n", linkedcell);
1718 if ((status = auth_to_cell(context, linkedcell,
1719 cellinfo.realm, NULL)))
1722 if (linkedcell != NULL) {
1729 /* Then, log to all paths in the paths list */
1730 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1731 if ((status = auth_to_path(context, cur_node->data)))
1736 * If only one thing was logged to, we'll return the status
1737 * of the single call. Otherwise, we'll return a generic
1738 * something failed status.
1740 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1741 status = AKLOG_SOMETHINGSWRONG;
1744 /* If we are keeping track of zephyr subscriptions, print them. */
1746 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1747 printf("zsub: %s\n", cur_node->data);
1750 /* If we are keeping track of host information, print it. */
1752 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1753 printf("host: %s\n", cur_node->data);
1760 isdir(char *path, unsigned char *val)
1762 struct stat statbuf;
1764 if (lstat(path, &statbuf) < 0)
1767 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1775 static krb5_error_code
1776 get_credv5_akimpersonate(krb5_context context,
1778 krb5_principal service_principal,
1779 krb5_principal client_principal,
1782 int *allowed_enctypes,
1784 krb5_creds** out_creds /* out */ )
1786 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1787 krb5_error_code code;
1789 krb5_kt_cursor cursor[1];
1790 krb5_keytab_entry entry[1];
1792 krb5_creds *creds = 0;
1793 krb5_enctype enctype;
1795 krb5_keyblock session_key[1];
1797 Ticket ticket_reply[1];
1798 EncTicketPart enc_tkt_reply[1];
1799 krb5_address address[30];
1800 krb5_addresses faddr[1];
1802 time_t temp_time[2];
1804 krb5_ticket ticket_reply[1];
1805 krb5_enc_tkt_part enc_tkt_reply[1];
1806 krb5_address address[30], *faddr[30];
1810 static int any_enctype[] = {0};
1812 if (!(creds = malloc(sizeof *creds))) {
1816 if (!allowed_enctypes)
1817 allowed_enctypes = any_enctype;
1820 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1821 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1822 memset((char*)creds, 0, sizeof *creds);
1823 memset((char*)entry, 0, sizeof *entry);
1824 memset((char*)session_key, 0, sizeof *session_key);
1825 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1826 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1827 code = krb5_kt_resolve(context, keytab, &kt);
1830 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1832 afs_com_err(progname, code, "while resolving default keytab");
1836 if (service_principal) {
1837 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1838 code = krb5_kt_get_entry(context,
1845 if (allowed_enctypes[i])
1846 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1851 afs_com_err(progname, code,"while scanning keytab entries");
1855 krb5_keytab_entry new[1];
1857 memset(new, 0, sizeof *new);
1858 if ((code == krb5_kt_start_seq_get(context, kt, cursor))) {
1859 afs_com_err(progname, code, "while starting keytab scan");
1862 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1864 allowed_enctypes[i] && allowed_enctypes[i]
1865 != deref_entry_enctype(new); ++i)
1867 if ((!i || allowed_enctypes[i]) &&
1868 (best < 0 || best > i)) {
1869 krb5_free_keytab_entry_contents(context, entry);
1871 memset(new, 0, sizeof *new);
1872 } else krb5_free_keytab_entry_contents(context, new);
1874 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1875 afs_com_err(progname, i, "while ending keytab scan");
1880 afs_com_err(progname, code, "while scanning keytab");
1883 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1889 if ((code = krb5_generate_random_keyblock(context,
1890 deref_keyblock_enctype(session_key), session_key))) {
1891 afs_com_err(progname, code, "while making session key");
1894 enc_tkt_reply->flags.initial = 1;
1895 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1896 enc_tkt_reply->cname = client_principal->name;
1897 enc_tkt_reply->crealm = client_principal->realm;
1898 enc_tkt_reply->key = *session_key;
1900 static krb5_data empty_string;
1901 enc_tkt_reply->transited.contents = empty_string;
1903 enc_tkt_reply->authtime = starttime;
1904 enc_tkt_reply->starttime = temp_time;
1905 *enc_tkt_reply->starttime = starttime;
1907 enc_tkt_reply->renew_till = temp_time + 1;
1908 *enc_tkt_reply->renew_till = endtime;
1910 enc_tkt_reply->endtime = endtime;
1912 if ((code = krb5_c_make_random_key(context,
1913 deref_keyblock_enctype(session_key), session_key))) {
1914 afs_com_err(progname, code, "while making session key");
1917 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1918 #define DATACAST (unsigned char *)
1919 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1920 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1921 enc_tkt_reply->session = session_key;
1922 enc_tkt_reply->client = client_principal;
1924 static krb5_data empty_string;
1925 enc_tkt_reply->transited.tr_contents = empty_string;
1927 enc_tkt_reply->times.authtime = starttime;
1928 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1929 enc_tkt_reply->times.endtime = endtime;
1930 #endif /* USING_HEIMDAL */
1931 /* NB: We will discard address for now--ignoring caddr field
1932 in any case. MIT branch does what it always did. */
1934 if (paddress && *paddress) {
1935 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1938 faddr->val = address;
1940 for (i = 0; paddress[i]; ++i) {
1942 address[i].addr_type = KRB5_ADDRESS_INET;
1943 address[i].address.data = (void*)(paddress+i);
1944 address[i].address.length = sizeof(paddress[i]);
1947 address[i].magic = KV5M_ADDRESS;
1948 address[i].addrtype = ADDRTYPE_INET;
1950 address[i].addrtype = AF_INET;
1952 address[i].contents = (void*)(paddress+i);
1953 address[i].length = sizeof(int);
1954 faddr[i] = address+i;
1965 ticket_reply->sname = service_principal->name;
1966 ticket_reply->realm = service_principal->realm;
1968 { /* crypto block */
1969 krb5_crypto crypto = 0;
1970 unsigned char *buf = 0;
1971 size_t buf_size, buf_len;
1974 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
1975 enc_tkt_reply, &buf_len, code);
1977 afs_com_err(progname, code, "while encoding ticket");
1981 if(buf_len != buf_size) {
1982 afs_com_err(progname, code,
1983 "%d != %d while encoding ticket (internal ASN.1 encoder error",
1987 what = "krb5_crypto_init";
1988 code = krb5_crypto_init(context,
1989 &deref_entry_keyblock(entry),
1990 deref_entry_enctype(entry),
1993 what = "krb5_encrypt";
1994 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
1995 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
1998 if (crypto) krb5_crypto_destroy(context, crypto);
2000 afs_com_err(progname, code, "while %s", what);
2003 } /* crypto block */
2004 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
2005 ticket_reply->enc_part.kvno = temp_vno;
2006 *ticket_reply->enc_part.kvno = entry->vno;
2007 ticket_reply->tkt_vno = 5;
2009 ticket_reply->server = service_principal;
2010 ticket_reply->enc_part2 = enc_tkt_reply;
2011 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
2012 afs_com_err(progname, code, "while making ticket");
2015 ticket_reply->enc_part.kvno = entry->vno;
2018 /* Construct Creds */
2020 if ((code = krb5_copy_principal(context, service_principal,
2022 afs_com_err(progname, code, "while copying service principal");
2025 if ((code = krb5_copy_principal(context, client_principal,
2027 afs_com_err(progname, code, "while copying client principal");
2030 if ((code = krb5_copy_keyblock_contents(context, session_key,
2031 &deref_session_key(creds)))) {
2032 afs_com_err(progname, code, "while copying session key");
2037 creds->times.authtime = enc_tkt_reply->authtime;
2038 creds->times.starttime = *(enc_tkt_reply->starttime);
2039 creds->times.endtime = enc_tkt_reply->endtime;
2040 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2041 creds->flags.b = enc_tkt_reply->flags;
2043 creds->times = enc_tkt_reply->times;
2044 creds->ticket_flags = enc_tkt_reply->flags;
2046 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2048 else if ((code = krb5_copy_addresses(context,
2049 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2050 afs_com_err(progname, code, "while copying addresses");
2056 size_t creds_tkt_len;
2057 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2058 ticket_reply, &creds_tkt_len, code);
2060 afs_com_err(progname, code, "while encoding ticket");
2065 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2066 afs_com_err(progname, code, "while encoding ticket");
2069 creds->ticket = *temp;
2076 if (deref_enc_data(&ticket_reply->enc_part))
2077 free(deref_enc_data(&ticket_reply->enc_part));
2078 krb5_free_keytab_entry_contents(context, entry);
2079 if (client_principal)
2080 krb5_free_principal(context, client_principal);
2081 if (service_principal)
2082 krb5_free_principal(context, service_principal);
2084 krb5_cc_close(context, cc);
2086 krb5_kt_close(context, kt);
2087 if (creds) krb5_free_creds(context, creds);
2088 krb5_free_keyblock_contents(context, session_key);
2096 static krb5_error_code
2097 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2102 static krb5_principal client_principal = 0;
2104 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2105 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2107 memset(&increds, 0, sizeof(increds));
2108 /* ANL - instance may be ptr to a null string. Pass null then */
2109 if ((r = krb5_build_principal(context, &increds.server,
2110 strlen(realm), realm,
2112 (inst && strlen(inst)) ? inst : (void *) NULL,
2118 if (!_krb425_ccache) {
2119 r = krb5_cc_default(context, &_krb425_ccache);
2123 if (!client_principal) {
2125 r = krb5_parse_name(context, client, &client_principal);
2127 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2133 increds.client = client_principal;
2134 increds.times.endtime = 0;
2135 /* Ask for DES since that is what V4 understands */
2136 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2139 int allowed_enctypes[] = {
2140 ENCTYPE_DES_CBC_CRC, 0
2143 r = get_credv5_akimpersonate(context,
2152 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2159 get_user_realm(krb5_context context, char **realm)
2161 static krb5_principal client_principal = 0;
2162 krb5_error_code r = 0;
2166 if (!_krb425_ccache)
2167 krb5_cc_default(context, &_krb425_ccache);
2168 if (!client_principal) {
2170 r = krb5_parse_name(context, client, &client_principal);
2172 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2178 *realm = extract_realm(context, client_principal);