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
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29 * regents of the Linux Box Corporation shall not be liable
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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>
38 #include <afs/param.h>
46 #include <afs/token.h>
51 #elif HAVE_ET_COM_ERR_H
52 # include <et/com_err.h>
53 #elif HAVE_KRB5_COM_ERR_H
54 # include <krb5/com_err.h>
56 # error No com_err.h? We need some kind of com_err.h
59 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
60 #include <afs/com_err.h>
64 #include <sys/ioccom.h>
68 #include <afs/cellconfig.h>
70 #include <afs/venus.h>
71 #include <afs/ptserver.h>
72 #include <afs/ptuser.h>
73 #include <afs/pterror.h>
74 #include <afs/dirpath.h>
75 #include <afs/afsutil.h>
78 #include "linked_list.h"
80 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
83 #ifdef HAVE_KRB5_CREDS_SESSION
84 #define USING_HEIMDAL 1
90 #ifndef AFS_TRY_FULL_PRINC
91 #define AFS_TRY_FULL_PRINC 1
92 #endif /* AFS_TRY_FULL_PRINC */
94 #define AKLOG_TRYAGAIN -1
95 #define AKLOG_SUCCESS 0
97 #define AKLOG_SOMETHINGSWRONG 2
99 #define AKLOG_KERBEROS 4
100 #define AKLOG_TOKEN 5
101 #define AKLOG_BADPATH 6
113 /* RedHat 4.x doesn't seem to define this */
114 #define MAXSYMLINKS 5
117 #define DIR '/' /* Character that divides directories */
118 #define DIRSTRING "/" /* String form of above */
119 #define VOLMARKER ':' /* Character separating cellname from mntpt */
120 #define VOLMARKERSTRING ":" /* String form of above */
124 char realm[REALM_SZ];
127 static krb5_ccache _krb425_ccache = NULL;
130 * Why doesn't AFS provide these prototypes?
133 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
139 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
140 static int isdir(char *, unsigned char *);
141 static krb5_error_code get_credv5(krb5_context context, char *, char *,
142 char *, krb5_creds **);
143 static int get_user_realm(krb5_context, char **);
145 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
146 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
147 x == KRB5KRB_ERR_GENERIC)
149 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
151 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
152 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
153 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
154 #define realm_data(c, p) krb5_princ_realm(c, p)->data
155 #define realm_len(c, p) krb5_princ_realm(c, p)->length
157 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
159 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
160 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
161 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
162 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
163 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
166 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
169 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
170 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
174 krb5_encrypt_tkt_part(krb5_context context,
175 const krb5_keyblock *key,
182 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
184 if ((code = krb5_c_encrypt_length(context, key->enctype,
185 data->length, &enclen)))
187 ticket->enc_part.ciphertext.length = enclen;
188 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
192 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
193 0, data, &ticket->enc_part))) {
194 free(ticket->enc_part.ciphertext.data);
195 ticket->enc_part.ciphertext.data = 0;
207 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
209 #define get_cred_keydata(c) c->keyblock.contents
210 #define get_cred_keylen(c) c->keyblock.length
211 #define get_creds_enctype(c) c->keyblock.enctype
213 #elif defined(HAVE_KRB5_CREDS_SESSION)
215 #define get_cred_keydata(c) c->session.keyvalue.data
216 #define get_cred_keylen(c) c->session.keyvalue.length
217 #define get_creds_enctype(c) c->session.keytype
220 #error "Must have either keyblock or session member of krb5_creds"
223 /* MITKerberosShim logs but returns success */
224 #if !defined(HAVE_KRB5_524_CONV_PRINCIPAL) || defined(AFS_DARWIN110_ENV) || (!defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC))
225 #define HAVE_NO_KRB5_524
226 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
227 #define krb5_524_convert_creds krb524_convert_creds_kdc
231 #define deref_keyblock_enctype(kb) \
234 #define deref_entry_keyblock(entry) \
237 #define deref_session_key(creds) \
240 #define deref_enc_tkt_addrs(tkt) \
243 #define deref_enc_length(enc) \
244 ((enc)->cipher.length)
246 #define deref_enc_data(enc) \
249 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
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)->ciphertext.length)
267 #define deref_enc_data(enc) \
268 ((enc)->ciphertext.data)
272 #define deref_entry_enctype(entry) \
273 deref_keyblock_enctype(&deref_entry_keyblock(entry))
276 * Provide a replacement for strerror if we don't have it
279 #ifndef HAVE_STRERROR
280 extern char *sys_errlist[];
281 #define strerror(x) sys_errlist[x]
282 #endif /* HAVE_STRERROR */
284 static char *progname = NULL; /* Name of this program */
285 static int dflag = FALSE; /* Give debugging information */
286 static int noauth = FALSE; /* If true, don't try to get tokens */
287 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
288 static int hosts = FALSE; /* Are we keeping track of hosts? */
289 static int noprdb = FALSE; /* Skip resolving name to id? */
290 static int linked = FALSE; /* try for both AFS nodes */
291 static int afssetpag = FALSE; /* setpag for AFS */
292 static int force = FALSE; /* Bash identical tokens? */
293 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
294 static char *keytab = NULL; /* keytab for akimpersonate */
295 static char *client = NULL; /* client principal for akimpersonate */
296 static linked_list zsublist; /* List of zephyr subscriptions */
297 static linked_list hostlist; /* List of host addresses */
298 static linked_list authedcells; /* List of cells already logged to */
300 /* A com_error bodge. The idea here is that this routine lets us lookup
301 * things in the system com_err, if the AFS one just tells us the error
306 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
313 const char *str = afs_error_message(code);
314 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
315 #ifdef HAVE_KRB5_SVC_GET_MSG
316 krb5_svc_get_msg(code,&str);
317 #elif defined(HAVE_KRB5_GET_ERROR_MESSAGE)
318 krb5_context context;
319 krb5_init_context(&context);
320 str = krb5_get_error_message(context, code);
321 krb5_free_context(context);
323 ; /* IRIX apparently has neither: use the string we have */
328 #ifdef HAVE_KRB5_SVC_GET_MSG
329 krb5_free_string(str);
333 vfprintf(stderr, fmt, ap);
340 afs_dprintf(char *fmt, ...) {
350 copy_cellinfo(cellinfo_t *cellinfo)
352 cellinfo_t *new_cellinfo;
354 if ((new_cellinfo = malloc(sizeof(cellinfo_t))))
355 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
357 return ((char *)new_cellinfo);
362 get_cellconfig(const char *config, char *cell,
363 struct afsconf_cell *cellconfig, char **local_cell)
365 int status = AKLOG_SUCCESS;
366 struct afsconf_dir *configdir;
368 memset(cellconfig, 0, sizeof(*cellconfig));
370 *local_cell = malloc(MAXCELLCHARS);
371 if (*local_cell == NULL) {
372 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
377 if (!(configdir = afsconf_Open(config))) {
379 "%s: can't get afs configuration (afsconf_Open(%s))\n",
384 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
385 fprintf(stderr, "%s: can't determine local cell.\n", progname);
389 if ((cell == NULL) || (cell[0] == 0))
392 /* XXX - This function modifies 'cell' by passing it through lcstring */
393 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
394 fprintf(stderr, "%s: Can't get information about cell %s.\n",
399 afsconf_Close(configdir);
405 extract_realm(krb5_context context, krb5_principal princ) {
409 len = realm_len(context, princ);
410 if (len > REALM_SZ-1)
413 realm = malloc(sizeof(char) * (len+1));
417 strncpy(realm, realm_data(context, princ), len);
424 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
425 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
426 krb5_error_code code;
431 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
435 *realm = extract_realm(context, ticket->server);
439 krb5_free_ticket(context, ticket);
449 * Get a Kerberos service ticket to use as the base of an rxkad token for
453 * An initialized Kerberos v5 context
455 * The realm to look in for the service principal. If NULL, then the
456 * realm is determined from the cell name or the user's credentials
457 * (see below for the heuristics used)
459 * The cell information for the cell to obtain a ticket for
461 * A Kerberos credentials structure containing the ticket acquired
462 * for the cell. This is a dynamically allocated structure, which
463 * should be freed by using the appropriate Kerberos API function.
464 * @param[out] realmUsed
465 * The realm in which the cell's service principal was located. If
466 * unset, then the principal was located in the same realm as the
467 * current user. This is a malloc'd string which should be freed
471 * 0 on success, an error value upon failure
474 * This code tries principals in the following, much debated,
477 * If the realm is specified on the command line we do
478 * - afs/cell@COMMAND-LINE-REALM
479 * - afs@COMMAND-LINE-REALM
482 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
483 * - afs/cell@krb5_get_host_realm(db-server)
484 * Then, if krb5_get_host_realm(db-server) is non-empty
485 * - afs@ krb5_get_host_realm(db-server)
487 * - afs/cell@ upper-case-domain-of-db-server
488 * - afs@ upper-case-domain-of-db-server
490 * In all cases, the 'afs@' variant is only tried where the
491 * cell and the realm match case-insensitively.
495 rxkad_get_ticket(krb5_context context, char *realm,
496 struct afsconf_cell *cell,
497 krb5_creds **v5cred, char **realmUsed) {
498 char *realm_of_cell = NULL;
499 char *realm_of_user = NULL;
500 char *realm_from_princ = NULL;
506 if ((status = get_user_realm(context, &realm_of_user))) {
507 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
508 afs_com_err(progname, status, " while getting realm");
509 status = AKLOG_KERBEROS;
516 /* Cell on command line - use that one */
517 if (realm && realm[0]) {
518 realm_of_cell = realm;
519 status = AKLOG_TRYAGAIN;
520 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
522 /* Initially, try using afs/cell@USERREALM */
523 afs_dprintf("Trying to authenticate to user's realm %s.\n",
525 realm_of_cell = realm_of_user;
526 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
529 /* If that failed, try to determine the realm from the name of
530 * one of the DB servers */
531 if (TRYAGAIN(status)) {
532 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
533 if (!realm_of_cell) {
534 fprintf(stderr, "%s: Couldn't figure out realm for cell "
535 "%s.\n", progname, cell->name);
539 if (realm_of_cell[0])
540 afs_dprintf("We've deduced that we need to authenticate"
541 " to realm %s.\n", realm_of_cell);
543 afs_dprintf("We've deduced that we need to authenticate "
544 "using referrals.\n");
548 if (TRYAGAIN(status)) {
549 /* If we've got the full-princ-first option, or we're in a
550 * different realm from the cell - use the cell name as the
552 if (AFS_TRY_FULL_PRINC ||
553 strcasecmp(cell->name, realm_of_cell)!=0) {
554 status = get_credv5(context, AFSKEY, cell->name,
555 realm_of_cell, v5cred);
557 /* If we failed & we've got an empty realm, then try
558 * calling afs_realm_for_cell again. */
559 if (TRYAGAIN(status) && !realm_of_cell[0]) {
560 /* This time, get the realm by taking the domain
561 * component of the db server and make it upper case */
562 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
563 if (!realm_of_cell) {
565 "%s: Couldn't figure out realm for cell %s.\n",
566 progname, cell->name);
569 afs_dprintf("We've deduced that we need to authenticate"
570 " to realm %s.\n", realm_of_cell);
572 status = get_credv5(context, AFSKEY, cell->name,
573 realm_of_cell, v5cred);
576 /* If the realm and cell name match, then try without an
577 * instance, but only if realm is non-empty */
579 if (TRYAGAIN(status) &&
580 strcasecmp(cell->name, realm_of_cell) == 0) {
581 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
583 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
584 status = get_credv5(context, AFSKEY, cell->name,
585 realm_of_cell, v5cred);
590 /* Try to find a service principal for this cell.
591 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
592 * the first attempt, so we try twice to be sure */
594 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
601 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
602 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
603 progname, cell->name);
604 afs_com_err(progname, status, "while getting AFS tickets");
605 #ifdef KRB5_CC_NOT_KTYPE
606 if (status == KRB5_CC_NOT_KTYPE) {
607 fprintf(stderr, "allow_weak_crypto may be required in the Kerberos configuration\n");
610 status = AKLOG_KERBEROS;
614 /* If we've got a valid ticket, and we still don't know the realm name
615 * try to figure it out from the contents of the ticket
617 if (strcmp(realm_of_cell, "") == 0) {
618 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
621 "%s: Couldn't decode ticket to determine realm for "
623 progname, cell->name);
625 if (realm_from_princ)
626 realm_of_cell = realm_from_princ;
630 /* If the realm of the user and cell differ, then we need to use the
631 * realm when we later construct the user's principal */
632 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
633 *realmUsed = realm_of_user;
636 if (realm_from_princ)
637 free(realm_from_princ);
638 if (realm_of_user && *realmUsed == NULL)
645 * Build an rxkad token from a Kerberos ticket, using only local tools (that
646 * is, without using a 524 conversion service)
649 * An initialised Kerberos 5 context
651 * A Kerberos credentials structure containing a suitable service ticket
652 * @param[out] tokenPtr
653 * An AFS token structure containing an rxkad token. This is a malloc'd
654 * structure which should be freed by the caller.
655 * @param[out[ userPtr
656 * A string containing the principal of the user to whom the token was
657 * issued. This is a malloc'd block which should be freed by the caller.
660 * 0 on success, an error value upon failure
663 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
664 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
665 char username[BUFSIZ];
666 struct ktc_token token;
668 #ifdef HAVE_NO_KRB5_524
672 char k4name[ANAME_SZ];
673 char k4inst[INST_SZ];
674 char k4realm[REALM_SZ];
676 void *inkey = get_cred_keydata(v5cred);
677 size_t inkey_sz = get_cred_keylen(v5cred);
679 afs_dprintf("Using Kerberos V5 ticket natively\n");
684 #ifndef HAVE_NO_KRB5_524
685 status = krb5_524_conv_principal (context, v5cred->client,
690 afs_com_err(progname, status, "while converting principal "
691 "to Kerberos V4 format");
692 return AKLOG_KERBEROS;
694 strcpy (username, k4name);
696 strcat (username, ".");
697 strcat (username, k4inst);
700 len = min(get_princ_len(context, v5cred->client, 0),
701 second_comp(context, v5cred->client) ?
702 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
703 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
704 username[len] = '\0';
706 if (second_comp(context, v5cred->client)) {
707 strcat(username, ".");
708 p = username + strlen(username);
709 len = min(get_princ_len(context, v5cred->client, 1),
710 MAXKTCNAMELEN - strlen(username) - 1);
711 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
716 memset(&token, 0, sizeof(struct ktc_token));
718 token.kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
719 token.startTime = v5cred->times.starttime;;
720 token.endTime = v5cred->times.endtime;
721 if (tkt_DeriveDesKey(get_creds_enctype(v5cred), inkey, inkey_sz,
722 &token.sessionKey) != 0) {
725 token.ticketLen = v5cred->ticket.length;
726 memcpy(token.ticket, v5cred->ticket.data, token.ticketLen);
728 status = token_importRxkadViceId(tokenPtr, &token, 0);
733 *userPtr = strdup(username);
739 * Convert a Keberos ticket to an rxkad token, using information obtained
740 * from an external Kerberos 5->4 conversion service. If the code is built
741 * with HAVE_NO_KRB5_524 then this is a stub function which will always
742 * return success without a token.
745 * An initialised Kerberos 5 context
747 * A Kerberos credentials structure containing a suitable service ticket
748 * @param[out] tokenPtr
749 * An AFS token structure containing an rxkad token. This is a malloc'd
750 * structure which should be freed by the caller.
751 * @param[out[ userPtr
752 * A string containing the principal of the user to whom the token was
753 * issued. This is a malloc'd block which should be freed by the caller.
756 * 0 on success, an error value upon failure
759 #ifdef HAVE_NO_KRB5_524
761 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
762 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
770 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
771 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
773 char username[BUFSIZ];
774 struct ktc_token token;
780 afs_dprintf("Using Kerberos 524 translator service\n");
782 status = krb5_524_convert_creds(context, v5cred, &cred);
785 afs_com_err(progname, status, "while converting tickets "
786 "to Kerberos V4 format");
787 return AKLOG_KERBEROS;
790 strcpy (username, cred.pname);
792 strcat (username, ".");
793 strcat (username, cred.pinst);
796 memset(&token, 0, sizeof(struct ktc_token));
798 token.kvno = cred.kvno;
799 token.startTime = cred.issue_date;
801 * It seems silly to go through a bunch of contortions to
802 * extract the expiration time, when the v5 credentials already
803 * has the exact time! Let's use that instead.
805 * Note that this isn't a security hole, as the expiration time
806 * is also contained in the encrypted token
808 token.endTime = v5cred->times.endtime;
809 memcpy(&token.sessionKey, cred.session, 8);
810 token.ticketLen = cred.ticket_st.length;
811 memcpy(token.ticket, cred.ticket_st.dat, token.ticketLen);
813 status = token_importRxkadViceId(tokenPtr, &token, 0);
818 *userPtr = strdup(username);
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_tokenUnion **token, char **authuser, int *foreign) {
851 char *realmUsed = NULL;
852 char *username = NULL;
859 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
864 status = rxkad_get_converted_token(context, v5cred, token, &username);
866 status = rxkad_build_native_token(context, v5cred, token, &username);
871 /* We now have the username, plus the realm name, so stitch them together
872 * to give us the name that the ptserver will know the user by */
873 if (realmUsed == NULL) {
874 *authuser = username;
878 asprintf(authuser, "%s@%s", username, realmUsed);
892 * Log to a cell. If the cell has already been logged to, return without
893 * doing anything. Otherwise, log to it and mark that it has been logged
897 auth_to_cell(krb5_context context, const char *config,
898 char *cell, char *realm, char **linkedcell)
900 int status = AKLOG_SUCCESS;
902 char *username = NULL; /* To hold client username structure */
903 afs_int32 viceId; /* AFS uid of user */
905 char *local_cell = NULL;
906 struct ktc_tokenUnion *rxkadToken = NULL;
907 struct ktc_setTokenData *token;
908 struct ktc_setTokenData *btoken = NULL;
909 struct afsconf_cell cellconf;
911 /* NULL or empty cell returns information on local cell */
912 if ((status = get_cellconfig(config, cell, &cellconf, &local_cell)))
915 if (linkedcell != NULL) {
916 if (cellconf.linkedCell != NULL) {
917 *linkedcell = strdup(cellconf.linkedCell);
918 if (*linkedcell == NULL) {
927 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
928 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
929 status = AKLOG_SUCCESS;
934 * Record that we have attempted to log to this cell. We do this
935 * before we try rather than after so that we will not try
936 * and fail repeatedly for one cell.
938 ll_string(&authedcells, ll_s_add, cellconf.name);
941 * Record this cell in the list of zephyr subscriptions. We may
942 * want zephyr subscriptions even if authentication fails.
943 * If this is done after we attempt to get tokens, aklog -zsubs
944 * can return something different depending on whether or not we
945 * are in -noauth mode.
947 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
949 "%s: failure adding cell %s to zephyr subscriptions list.\n",
950 progname, cellconf.name);
953 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
955 "%s: failure adding cell %s to zephyr subscriptions list.\n",
956 progname, local_cell);
961 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
962 cellconf.hostName[0]);
964 token = token_buildTokenJar(cellconf.name);
970 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
971 &username, &isForeign);
975 /* We need to keep the token structure around so that we can stick
976 * the viceId into it (once we know it) */
977 status = token_addToken(token, rxkadToken);
979 afs_dprintf("Add Token failed with %d", status);
984 ktc_GetTokenEx(cellconf.name, &btoken) == 0 &&
985 token_SetsEquivalent(token, btoken)) {
987 token_FreeSet(&btoken);
988 afs_dprintf("Identical tokens already exist; skipping.\n");
989 status = AKLOG_SUCCESS;
994 token_FreeSet(&btoken);
1001 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1004 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1007 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1008 status = pr_SNameToId (username, &viceId);
1011 afs_dprintf("Error %d\n", status);
1013 afs_dprintf("Id %d\n", (int) viceId);
1017 * This code is taken from cklog -- it lets people
1018 * automatically register with the ptserver in foreign cells
1021 #ifdef ALLOW_REGISTER
1022 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1023 afs_dprintf("doing first-time registration of %s at %s\n",
1024 username, cellconf.name);
1027 status = ktc_SetTokenEx(token);
1029 afs_com_err(progname, status,
1030 "while obtaining tokens for cell %s",
1032 status = AKLOG_TOKEN;
1036 * In case you're wondering, we don't need to change the
1037 * filename here because we're still connecting to the
1038 * same cell -- we're just using a different authenticat ion
1042 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1044 printf("Error %d\n", status);
1047 if ((status = pr_CreateUser(username, &viceId))) {
1048 fprintf(stderr, "%s: %s so unable to create remote PTS "
1049 "user %s in cell %s (status: %d).\n", progname,
1050 afs_error_message(status), username, cellconf.name,
1052 viceId = ANONYMOUSID;
1054 printf("created cross-cell entry for %s (Id %d) at %s\n",
1055 username, viceId, cellconf.name);
1058 #endif /* ALLOW_REGISTER */
1060 if ((status == 0) && (viceId != ANONYMOUSID)) {
1061 status = token_setRxkadViceId(rxkadToken, viceId);
1063 fprintf(stderr, "Error %d setting rxkad ViceId\n", status);
1064 status = AKLOG_SUCCESS;
1066 token_replaceToken(token, rxkadToken);
1071 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1073 #ifndef AFS_AIX51_ENV
1074 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1075 * this routine, it will not add the token. It is not clear what
1076 * is going on here! So we will do the following operation.
1077 * On AIX 5, it causes the parent program to die, so we won't.
1079 write(2,"",0); /* dummy write */
1081 token_setPag(token, afssetpag);
1082 status = ktc_SetTokenEx(token);
1084 afs_com_err(progname, status, "while setting tokens for cell %s",
1086 status = AKLOG_TOKEN;
1090 afs_dprintf("Noauth mode; not authenticating.\n");
1094 token_freeToken(&rxkadToken);
1106 get_afs_mountpoint(char *file, char *mountpoint, int size)
1109 char V ='V'; /* AFS has problem on Sun with pioctl */
1111 char our_file[MAXPATHLEN + 1];
1113 char *last_component;
1114 struct ViceIoctl vio;
1115 char cellname[BUFSIZ];
1117 strlcpy(our_file, file, sizeof(our_file));
1119 if ((last_component = strrchr(our_file, DIR))) {
1120 *last_component++ = 0;
1121 parent_dir = our_file;
1124 last_component = our_file;
1128 memset(cellname, 0, sizeof(cellname));
1130 vio.in = last_component;
1131 vio.in_size = strlen(last_component)+1;
1132 vio.out_size = size;
1133 vio.out = mountpoint;
1135 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1136 if (strchr(mountpoint, VOLMARKER) == NULL) {
1138 vio.in_size = strlen(file) + 1;
1139 vio.out_size = sizeof(cellname);
1142 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1143 strlcat(cellname, VOLMARKERSTRING, sizeof(cellname));
1144 strlcat(cellname, mountpoint + 1, sizeof(cellname));
1145 memset(mountpoint + 1, 0, size - 1);
1146 strcpy(mountpoint + 1, cellname);
1156 * This routine each time it is called returns the next directory
1157 * down a pathname. It resolves all symbolic links. The first time
1158 * it is called, it should be called with the name of the path
1159 * to be descended. After that, it should be called with the arguemnt
1163 next_path(char *origpath)
1165 static char path[MAXPATHLEN + 1];
1166 static char pathtocheck[MAXPATHLEN + 1];
1168 int link = FALSE; /* Is this a symbolic link? */
1169 char linkbuf[MAXPATHLEN + 1];
1170 char tmpbuf[MAXPATHLEN + 1];
1172 static char *last_comp; /* last component of directory name */
1173 static char *elast_comp; /* End of last component */
1177 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1179 /* If we are given something for origpath, we are initializing only. */
1181 memset(path, 0, sizeof(path));
1182 memset(pathtocheck, 0, sizeof(pathtocheck));
1183 strlcpy(path, origpath, sizeof(path));
1189 /* We were not given origpath; find then next path to check */
1191 /* If we've gotten all the way through already, return NULL */
1192 if (last_comp == NULL)
1196 while (*last_comp == DIR)
1197 strncat(pathtocheck, last_comp++, 1);
1198 len = (elast_comp = strchr(last_comp, DIR))
1199 ? elast_comp - last_comp : strlen(last_comp);
1200 strncat(pathtocheck, last_comp, len);
1201 memset(linkbuf, 0, sizeof(linkbuf));
1202 link = readlink(pathtocheck, linkbuf, sizeof(linkbuf)-1);
1205 linkbuf[link] = '\0'; /* NUL terminate string */
1207 if (++symlinkcount > MAXSYMLINKS) {
1208 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1209 exit(AKLOG_BADPATH);
1212 memset(tmpbuf, 0, sizeof(tmpbuf));
1214 strlcpy(tmpbuf, elast_comp, sizeof(tmpbuf));
1215 if (linkbuf[0] == DIR) {
1217 * If this is a symbolic link to an absolute path,
1218 * replace what we have by the absolute path.
1220 memset(path, 0, strlen(path));
1221 memcpy(path, linkbuf, sizeof(linkbuf));
1222 strcat(path, tmpbuf);
1225 memset(pathtocheck, 0, sizeof(pathtocheck));
1229 * If this is a symbolic link to a relative path,
1230 * replace only the last component with the link name.
1232 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1233 strcat(path, tmpbuf);
1235 if ((t = strrchr(pathtocheck, DIR))) {
1237 memset(t, 0, strlen(t));
1240 memset(pathtocheck, 0, sizeof(pathtocheck));
1244 last_comp = elast_comp;
1248 return(pathtocheck);
1252 add_hosts(char *file)
1255 char V = 'V'; /* AFS has problem on SunOS */
1257 struct ViceIoctl vio;
1258 char outbuf[BUFSIZ];
1264 memset(outbuf, 0, sizeof(outbuf));
1266 vio.out_size = sizeof(outbuf);
1270 afs_dprintf("Getting list of hosts for %s\n", file);
1272 /* Don't worry about errors. */
1273 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1274 phosts = (long *) outbuf;
1277 * Lists hosts that we care about. If ALLHOSTS is defined,
1278 * then all hosts that you ever may possible go through are
1279 * included in this list. If not, then only hosts that are
1280 * the only ones appear. That is, if a volume you must use
1281 * is replaced on only one server, that server is included.
1282 * If it is replicated on many servers, then none are included.
1283 * This is not perfect, but the result is that people don't
1284 * get subscribed to a lot of instances of FILSRV that they
1285 * probably won't need which reduces the instances of
1286 * people getting messages that don't apply to them.
1289 if (phosts[1] != '\0')
1292 for (i = 0; phosts[i]; i++) {
1294 in.s_addr = phosts[i];
1295 afs_dprintf("Got host %s\n", inet_ntoa(in));
1296 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1298 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1299 afs_dprintf("Got host %s\n", hp->h_name);
1300 ll_string(&zsublist, ll_s_add, hp->h_name);
1307 * This routine descends through a path to a directory, logging to
1308 * every cell it encounters along the way.
1311 auth_to_path(krb5_context context, const char *config, char *path)
1313 int status = AKLOG_SUCCESS;
1314 int auth_status = AKLOG_SUCCESS;
1317 char pathtocheck[MAXPATHLEN + 1];
1318 char mountpoint[MAXPATHLEN + 1];
1327 strlcpy(pathtocheck, path, sizeof(pathtocheck));
1329 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1330 fprintf(stderr, "Unable to find current working directory:\n");
1331 fprintf(stderr, "%s\n", pathtocheck);
1332 fprintf(stderr, "Try an absolute pathname.\n");
1333 exit(AKLOG_BADPATH);
1336 strlcat(pathtocheck, DIRSTRING, sizeof(pathtocheck));
1337 strlcat(pathtocheck, path, sizeof(pathtocheck));
1340 next_path(pathtocheck);
1342 /* Go on to the next level down the path */
1343 while ((nextpath = next_path(NULL))) {
1344 strlcpy(pathtocheck, nextpath, sizeof(pathtocheck));
1345 afs_dprintf("Checking directory %s\n", pathtocheck);
1347 * If this is an afs mountpoint, determine what cell from
1348 * the mountpoint name which is of the form
1349 * #cellname:volumename or %cellname:volumename.
1351 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1352 /* skip over the '#' or '%' */
1353 cell = mountpoint + 1;
1354 /* Add this (cell:volumename) to the list of zsubs */
1356 ll_string(&zsublist, ll_s_add, cell);
1358 add_hosts(pathtocheck);
1359 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1361 auth_status = auth_to_cell(context, config, cell, NULL, NULL);
1363 if (status == AKLOG_SUCCESS)
1364 status = auth_status;
1365 else if (status != auth_status)
1366 status = AKLOG_SOMETHINGSWRONG;
1371 if (isdir(pathtocheck, &isdirectory) < 0) {
1373 * If we've logged and still can't stat, there's
1376 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1377 pathtocheck, strerror(errno));
1378 return(AKLOG_BADPATH);
1380 else if (! isdirectory) {
1381 /* Allow only directories */
1382 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1384 return(AKLOG_BADPATH);
1394 /* Print usage message and exit */
1398 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1399 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1400 "[[-p | -path] pathname]\n",
1401 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1403 #ifndef HAVE_NO_KRB5_524
1407 fprintf(stderr, " -d gives debugging information.\n");
1408 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1409 fprintf(stderr, " pathname is the name of a directory to which ");
1410 fprintf(stderr, "you wish to authenticate.\n");
1411 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1412 fprintf(stderr, " -hosts gives host address information.\n");
1413 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1414 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1415 fprintf(stderr, " -force means replace identical tickets. \n");
1416 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1417 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1418 #ifndef HAVE_NO_KRB5_524
1419 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1421 fprintf(stderr, " No commandline arguments means ");
1422 fprintf(stderr, "authenticate to the local cell.\n");
1423 fprintf(stderr, "\n");
1428 main(int argc, char *argv[])
1430 krb5_context context;
1431 int status = AKLOG_SUCCESS;
1433 int somethingswrong = FALSE;
1435 cellinfo_t cellinfo;
1437 extern char *progname; /* Name of this program */
1439 int cmode = FALSE; /* Cellname mode */
1440 int pmode = FALSE; /* Path name mode */
1442 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1443 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1444 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1446 linked_list cells; /* List of cells to log to */
1447 linked_list paths; /* List of paths to log to */
1450 const char *config = AFSDIR_CLIENT_ETC_DIRPATH;
1452 memset(&cellinfo, 0, sizeof(cellinfo));
1454 memset(realm, 0, sizeof(realm));
1455 memset(cell, 0, sizeof(cell));
1456 memset(path, 0, sizeof(path));
1464 /* Store the program name here for error messages */
1465 if ((progname = strrchr(argv[0], DIR)))
1470 #if defined(KRB5_PROG_ETYPE_NOSUPP) && !(defined(HAVE_KRB5_ENCTYPE_ENABLE) || defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO))
1472 char *filepath = NULL, *newpath = NULL;
1473 #ifndef AFS_DARWIN_ENV
1474 char *defaultpath = "/etc/krb5.conf:/etc/krb5/krb5.conf";
1476 char *defaultpath = "~/Library/Preferences/edu.mit.Kerberos:/Library/Preferences/edu.mit.Kerberos";
1478 filepath = getenv("KRB5_CONFIG");
1480 /* only fiddle with KRB5_CONFIG if krb5-weak.conf actually exists */
1481 asprintf(&newpath, "%s/krb5-weak.conf", AFSDIR_CLIENT_ETC_DIRPATH);
1482 if (access(newpath, R_OK) == 0) {
1485 asprintf(&newpath, "%s:%s/krb5-weak.conf",
1486 filepath ? filepath : defaultpath,
1487 AFSDIR_CLIENT_ETC_DIRPATH);
1488 setenv("KRB5_CONFIG", newpath, 1);
1491 krb5_init_context(&context);
1493 #if defined(KRB5_PROG_ETYPE_NOSUPP) && !(defined(HAVE_KRB5_ENCTYPE_ENABLE) || defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO))
1496 setenv("KRB5_CONFIG", filepath, 1);
1498 unsetenv("KRB5_CONFIG");
1501 initialize_KTC_error_table ();
1502 initialize_U_error_table();
1503 initialize_RXK_error_table();
1504 initialize_ACFG_error_table();
1505 initialize_PT_error_table();
1506 afs_set_com_err_hook(redirect_errors);
1509 * Enable DES enctypes, which are currently still required for AFS.
1510 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1513 #if defined(HAVE_KRB5_ENCTYPE_ENABLE)
1514 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1516 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1517 #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1518 krb5_allow_weak_crypto(context, 1);
1521 /* Initialize list of cells to which we have authenticated */
1522 ll_init(&authedcells);
1524 /* Parse commandline arguments and make list of what to do. */
1525 for (i = 1; i < argc; i++) {
1526 if (strcmp(argv[i], "-d") == 0)
1528 else if (strcmp(argv[i], "-noauth") == 0)
1530 else if (strcmp(argv[i], "-zsubs") == 0)
1532 else if (strcmp(argv[i], "-hosts") == 0)
1534 else if (strcmp(argv[i], "-noprdb") == 0)
1536 else if (strcmp(argv[i], "-linked") == 0)
1538 else if (strcmp(argv[i], "-force") == 0)
1540 #ifndef HAVE_NO_KRB5_524
1541 else if (strcmp(argv[i], "-524") == 0)
1544 else if (strcmp(argv[i], "-setpag") == 0)
1546 else if (((strcmp(argv[i], "-cell") == 0) ||
1547 (strcmp(argv[i], "-c") == 0)) && !pmode)
1550 strlcpy(cell, argv[i], sizeof(cell));
1554 else if ((strcmp(argv[i], "-keytab") == 0))
1560 else if ((strcmp(argv[i], "-principal") == 0))
1566 else if (((strcmp(argv[i], "-path") == 0) ||
1567 (strcmp(argv[i], "-p") == 0)) && !cmode)
1570 strlcpy(path, argv[i], sizeof(path));
1574 else if (strcmp(argv[i], "-config") == 0)
1580 else if (argv[i][0] == '-')
1582 else if (!pmode && !cmode) {
1583 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1584 (strcmp(argv[i], "..") == 0)) {
1586 strlcpy(path, argv[i], sizeof(path));
1590 strlcpy(cell, argv[i], sizeof(path));
1597 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1600 strlcpy(realm, argv[i], sizeof(realm));
1604 /* Add this cell to list of cells */
1605 strcpy(cellinfo.cell, cell);
1606 strcpy(cellinfo.realm, realm);
1607 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1609 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1610 ll_add_data(cur_node, new_cellinfo);
1613 "%s: failure copying cellinfo.\n", progname);
1618 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1622 memset(&cellinfo, 0, sizeof(cellinfo));
1624 memset(cell, 0, sizeof(cell));
1625 memset(realm, 0, sizeof(realm));
1628 /* Add this path to list of paths */
1629 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1631 if ((new_path = strdup(path)))
1632 ll_add_data(cur_node, new_path);
1634 fprintf(stderr, "%s: failure copying path name.\n",
1640 fprintf(stderr, "%s: failure adding path to paths list.\n",
1645 memset(path, 0, sizeof(path));
1649 /* If nothing was given, log to the local cell. */
1650 if ((cells.nelements + paths.nelements) == 0) {
1653 status = auth_to_cell(context, config, NULL, NULL, &linkedcell);
1655 /* If this cell is linked to a DCE cell, and user requested -linked,
1656 * get tokens for both. This is very useful when the AFS cell is
1657 * linked to a DFS cell and this system does not also have DFS.
1660 if (!status && linked && linkedcell != NULL) {
1661 afs_dprintf("Linked cell: %s\n", linkedcell);
1662 status = auth_to_cell(context, config, linkedcell, NULL, NULL);
1670 * Local hack - if the person has a file in their home
1671 * directory called ".xlog", read that for a list of
1672 * extra cells to authenticate to
1675 if ((pwd = getpwuid(getuid())) != NULL) {
1678 char fcell[100], xlog_path[512];
1680 strlcpy(xlog_path, pwd->pw_dir, sizeof(xlog_path));
1681 strlcat(xlog_path, "/.xlog", sizeof(xlog_path));
1683 if ((stat(xlog_path, &sbuf) == 0) &&
1684 ((f = fopen(xlog_path, "r")) != NULL)) {
1686 afs_dprintf("Reading %s for cells to authenticate to.\n",
1689 while (fgets(fcell, 100, f) != NULL) {
1692 fcell[strlen(fcell) - 1] = '\0';
1694 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1696 auth_status = auth_to_cell(context, config, fcell, NULL, NULL);
1697 if (status == AKLOG_SUCCESS)
1698 status = auth_status;
1700 status = AKLOG_SOMETHINGSWRONG;
1706 /* Log to all cells in the cells list first */
1707 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1708 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1709 status = auth_to_cell(context, config, cellinfo.cell,
1710 cellinfo.realm, &linkedcell);
1714 if (linked && linkedcell != NULL) {
1715 afs_dprintf("Linked cell: %s\n", linkedcell);
1716 status = auth_to_cell(context, config, linkedcell,
1717 cellinfo.realm, NULL);
1721 if (linkedcell != NULL) {
1728 /* Then, log to all paths in the paths list */
1729 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1730 status = auth_to_path(context, config, 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];
1801 unsigned int temp_vno[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 "%u != %u while encoding ticket (internal ASN.1 encoder error",
1984 (unsigned int)buf_len, (unsigned int)buf_size);
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 = (void *)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 : 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;
2136 /* Ask for DES since that is what V4 understands */
2137 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2140 int allowed_enctypes[] = {
2141 ENCTYPE_DES_CBC_CRC, 0
2144 r = get_credv5_akimpersonate(context,
2153 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2160 get_user_realm(krb5_context context, char **realm)
2162 static krb5_principal client_principal = 0;
2163 krb5_error_code r = 0;
2167 if (!_krb425_ccache) {
2168 r = krb5_cc_default(context, &_krb425_ccache);
2172 if (!client_principal) {
2174 r = krb5_parse_name(context, client, &client_principal);
2176 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2182 *realm = extract_realm(context, client_principal);