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5 * For distribution and copying rights, see the file "mit-copyright.h"
8 * Copyright (c) 2005, 2006
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33 * if it has been or is hereafter advised of the possibility of
37 #include <afsconfig.h>
38 #include <afs/param.h>
47 #include <afs/token.h>
50 #if defined(HAVE_ET_COM_ERR_H)
51 #include <et/com_err.h>
56 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
57 #include <afs/com_err.h>
61 #include <sys/ioccom.h>
65 #include <afs/cellconfig.h>
67 #include <afs/venus.h>
68 #include <afs/ptserver.h>
69 #include <afs/ptuser.h>
70 #include <afs/pterror.h>
71 #include <afs/dirpath.h>
72 #include <afs/afsutil.h>
75 #include "linked_list.h"
77 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
80 #ifdef HAVE_KRB5_CREDS_SESSION
81 #define USING_HEIMDAL 1
87 #ifndef AFS_TRY_FULL_PRINC
88 #define AFS_TRY_FULL_PRINC 1
89 #endif /* AFS_TRY_FULL_PRINC */
91 #define AKLOG_TRYAGAIN -1
92 #define AKLOG_SUCCESS 0
94 #define AKLOG_SOMETHINGSWRONG 2
96 #define AKLOG_KERBEROS 4
98 #define AKLOG_BADPATH 6
110 /* RedHat 4.x doesn't seem to define this */
111 #define MAXSYMLINKS 5
114 #define DIR '/' /* Character that divides directories */
115 #define DIRSTRING "/" /* String form of above */
116 #define VOLMARKER ':' /* Character separating cellname from mntpt */
117 #define VOLMARKERSTRING ":" /* String form of above */
121 char realm[REALM_SZ];
124 static krb5_ccache _krb425_ccache = NULL;
127 * Why doesn't AFS provide these prototypes?
130 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
136 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
137 static int isdir(char *, unsigned char *);
138 static krb5_error_code get_credv5(krb5_context context, char *, char *,
139 char *, krb5_creds **);
140 static int get_user_realm(krb5_context, char **);
142 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
143 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
144 x == KRB5KRB_ERR_GENERIC)
146 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
148 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
149 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
150 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
151 #define realm_data(c, p) krb5_princ_realm(c, p)->data
152 #define realm_len(c, p) krb5_princ_realm(c, p)->length
154 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
156 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
157 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
158 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
159 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
160 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
163 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
166 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
167 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
171 krb5_encrypt_tkt_part(krb5_context context,
172 const krb5_keyblock *key,
179 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
181 if ((code = krb5_c_encrypt_length(context, key->enctype,
182 data->length, &enclen)))
184 ticket->enc_part.ciphertext.length = enclen;
185 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
189 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
190 0, data, &ticket->enc_part))) {
191 free(ticket->enc_part.ciphertext.data);
192 ticket->enc_part.ciphertext.data = 0;
204 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
206 #define get_cred_keydata(c) c->keyblock.contents
207 #define get_cred_keylen(c) c->keyblock.length
208 #define get_creds_enctype(c) c->keyblock.enctype
210 #elif defined(HAVE_KRB5_CREDS_SESSION)
212 #define get_cred_keydata(c) c->session.keyvalue.data
213 #define get_cred_keylen(c) c->session.keyvalue.length
214 #define get_creds_enctype(c) c->session.keytype
217 #error "Must have either keyblock or session member of krb5_creds"
220 #if !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
221 #define krb5_524_convert_creds krb524_convert_creds_kdc
222 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC)
223 #define HAVE_NO_KRB5_524
227 #define deref_keyblock_enctype(kb) \
230 #define deref_entry_keyblock(entry) \
233 #define deref_session_key(creds) \
236 #define deref_enc_tkt_addrs(tkt) \
239 #define deref_enc_length(enc) \
240 ((enc)->cipher.length)
242 #define deref_enc_data(enc) \
245 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
248 #define deref_keyblock_enctype(kb) \
251 #define deref_entry_keyblock(entry) \
254 #define deref_session_key(creds) \
257 #define deref_enc_tkt_addrs(tkt) \
260 #define deref_enc_length(enc) \
261 ((enc)->ciphertext.length)
263 #define deref_enc_data(enc) \
264 ((enc)->ciphertext.data)
268 #define deref_entry_enctype(entry) \
269 deref_keyblock_enctype(&deref_entry_keyblock(entry))
272 * Provide a replacement for strerror if we don't have it
275 #ifndef HAVE_STRERROR
276 extern char *sys_errlist[];
277 #define strerror(x) sys_errlist[x]
278 #endif /* HAVE_STRERROR */
280 static char *progname = NULL; /* Name of this program */
281 static int dflag = FALSE; /* Give debugging information */
282 static int noauth = FALSE; /* If true, don't try to get tokens */
283 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
284 static int hosts = FALSE; /* Are we keeping track of hosts? */
285 static int noprdb = FALSE; /* Skip resolving name to id? */
286 static int linked = FALSE; /* try for both AFS nodes */
287 static int afssetpag = FALSE; /* setpag for AFS */
288 static int force = FALSE; /* Bash identical tokens? */
289 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
290 static char *keytab = NULL; /* keytab for akimpersonate */
291 static char *client = NULL; /* client principal for akimpersonate */
292 static linked_list zsublist; /* List of zephyr subscriptions */
293 static linked_list hostlist; /* List of host addresses */
294 static linked_list authedcells; /* List of cells already logged to */
296 /* A com_error bodge. The idea here is that this routine lets us lookup
297 * things in the system com_err, if the AFS one just tells us the error
302 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
309 const char *str = afs_error_message(code);
310 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
311 #ifdef HAVE_KRB5_SVC_GET_MSG
312 krb5_svc_get_msg(code,&str);
313 #elif defined(HAVE_ERROR_MESSAGE)
314 str = error_message(code);
316 ; /* IRIX apparently has neither: use the string we have */
321 #ifdef HAVE_KRB5_SVC_GET_MSG
322 krb5_free_string(str);
326 vfprintf(stderr, fmt, ap);
333 afs_dprintf(char *fmt, ...) {
343 copy_cellinfo(cellinfo_t *cellinfo)
345 cellinfo_t *new_cellinfo;
347 if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t))))
348 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
350 return ((char *)new_cellinfo);
355 get_cellconfig(char *cell, struct afsconf_cell *cellconfig, char **local_cell)
357 int status = AKLOG_SUCCESS;
358 struct afsconf_dir *configdir;
360 memset(cellconfig, 0, sizeof(*cellconfig));
362 *local_cell = malloc(MAXCELLCHARS);
363 if (*local_cell == NULL) {
364 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
369 if (!(configdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH))) {
371 "%s: can't get afs configuration (afsconf_Open(%s))\n",
372 progname, AFSDIR_CLIENT_ETC_DIRPATH);
376 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
377 fprintf(stderr, "%s: can't determine local cell.\n", progname);
381 if ((cell == NULL) || (cell[0] == 0))
384 /* XXX - This function modifies 'cell' by passing it through lcstring */
385 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
386 fprintf(stderr, "%s: Can't get information about cell %s.\n",
391 afsconf_Close(configdir);
397 extract_realm(krb5_context context, krb5_principal princ) {
401 len = realm_len(context, princ);
402 if (len > REALM_SZ-1)
405 realm = malloc(sizeof(char) * (len+1));
409 strncpy(realm, realm_data(context, princ), len);
416 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
417 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
418 krb5_error_code code;
423 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
427 *realm = extract_realm(context, ticket->server);
431 krb5_free_ticket(context, ticket);
441 * Get a Kerberos service ticket to use as the base of an rxkad token for
445 * An initialized Kerberos v5 context
447 * The realm to look in for the service principal. If NULL, then the
448 * realm is determined from the cell name or the user's credentials
449 * (see below for the heuristics used)
451 * The cell information for the cell to obtain a ticket for
453 * A Kerberos credentials structure containing the ticket acquired
454 * for the cell. This is a dynamically allocated structure, which
455 * should be freed by using the appropriate Kerberos API function.
456 * @param[out] realmUsed
457 * The realm in which the cell's service principal was located. If
458 * unset, then the principal was located in the same realm as the
459 * current user. This is a malloc'd string which should be freed
463 * 0 on success, an error value upon failure
466 * This code tries principals in the following, much debated,
469 * If the realm is specified on the command line we do
470 * - afs/cell@COMMAND-LINE-REALM
471 * - afs@COMMAND-LINE-REALM
474 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
475 * - afs/cell@krb5_get_host_realm(db-server)
476 * Then, if krb5_get_host_realm(db-server) is non-empty
477 * - afs@ krb5_get_host_realm(db-server)
479 * - afs/cell@ upper-case-domain-of-db-server
480 * - afs@ upper-case-domain-of-db-server
482 * In all cases, the 'afs@' variant is only tried where the
483 * cell and the realm match case-insensitively.
487 rxkad_get_ticket(krb5_context context, char *realm,
488 struct afsconf_cell *cell,
489 krb5_creds **v5cred, char **realmUsed) {
490 char *realm_of_cell = NULL;
491 char *realm_of_user = NULL;
492 char *realm_from_princ = NULL;
498 if ((status = get_user_realm(context, &realm_of_user))) {
499 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
500 afs_com_err(progname, status, " while getting realm");
501 status = AKLOG_KERBEROS;
508 /* Cell on command line - use that one */
509 if (realm && realm[0]) {
510 realm_of_cell = realm;
511 status = AKLOG_TRYAGAIN;
512 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
514 /* Initially, try using afs/cell@USERREALM */
515 afs_dprintf("Trying to authenticate to user's realm %s.\n",
517 realm_of_cell = realm_of_user;
518 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
521 /* If that failed, try to determine the realm from the name of
522 * one of the DB servers */
523 if (TRYAGAIN(status)) {
524 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
525 if (!realm_of_cell) {
526 fprintf(stderr, "%s: Couldn't figure out realm for cell "
527 "%s.\n", progname, cell->name);
531 if (realm_of_cell[0])
532 afs_dprintf("We've deduced that we need to authenticate"
533 " to realm %s.\n", realm_of_cell);
535 afs_dprintf("We've deduced that we need to authenticate "
536 "using referrals.\n");
540 if (TRYAGAIN(status)) {
541 /* If we've got the full-princ-first option, or we're in a
542 * different realm from the cell - use the cell name as the
544 if (AFS_TRY_FULL_PRINC ||
545 strcasecmp(cell->name, realm_of_cell)!=0) {
546 status = get_credv5(context, AFSKEY, cell->name,
547 realm_of_cell, v5cred);
549 /* If we failed & we've got an empty realm, then try
550 * calling afs_realm_for_cell again. */
551 if (TRYAGAIN(status) && !realm_of_cell[0]) {
552 /* This time, get the realm by taking the domain
553 * component of the db server and make it upper case */
554 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
555 if (!realm_of_cell) {
557 "%s: Couldn't figure out realm for cell %s.\n",
558 progname, cell->name);
561 afs_dprintf("We've deduced that we need to authenticate"
562 " to realm %s.\n", realm_of_cell);
564 status = get_credv5(context, AFSKEY, cell->name,
565 realm_of_cell, v5cred);
568 /* If the realm and cell name match, then try without an
569 * instance, but only if realm is non-empty */
571 if (TRYAGAIN(status) &&
572 strcasecmp(cell->name, realm_of_cell) == 0) {
573 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
575 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
576 status = get_credv5(context, AFSKEY, cell->name,
577 realm_of_cell, v5cred);
582 /* Try to find a service principal for this cell.
583 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
584 * the first attempt, so we try twice to be sure */
586 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
593 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
594 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
595 progname, cell->name);
596 afs_com_err(progname, status, "while getting AFS tickets");
597 #ifdef KRB5_CC_NOT_KTYPE
598 if (status == KRB5_CC_NOT_KTYPE) {
599 fprintf(stderr, "allow_weak_enctypes may be required in the Kerberos configuration\n");
602 status = AKLOG_KERBEROS;
606 /* If we've got a valid ticket, and we still don't know the realm name
607 * try to figure it out from the contents of the ticket
609 if (strcmp(realm_of_cell, "") == 0) {
610 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
613 "%s: Couldn't decode ticket to determine realm for "
615 progname, cell->name);
617 if (realm_from_princ)
618 realm_of_cell = realm_from_princ;
622 /* If the realm of the user and cell differ, then we need to use the
623 * realm when we later construct the user's principal */
624 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
625 *realmUsed = realm_of_user;
628 if (realm_from_princ)
629 free(realm_from_princ);
630 if (realm_of_user && *realmUsed == NULL)
637 * Build an rxkad token from a Kerberos ticket, using only local tools (that
638 * is, without using a 524 conversion service)
641 * An initialised Kerberos 5 context
643 * A Kerberos credentials structure containing a suitable service ticket
644 * @param[out] tokenPtr
645 * An AFS token structure containing an rxkad token. This is a malloc'd
646 * structure which should be freed by the caller.
647 * @param[out[ userPtr
648 * A string containing the principal of the user to whom the token was
649 * issued. This is a malloc'd block which should be freed by the caller.
652 * 0 on success, an error value upon failure
655 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
656 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
657 char username[BUFSIZ];
658 struct ktc_tokenUnion *token;
659 struct token_rxkad *rxkadToken;
660 #ifdef HAVE_NO_KRB5_524
665 char k4name[ANAME_SZ];
666 char k4inst[INST_SZ];
667 char k4realm[REALM_SZ];
670 afs_dprintf("Using Kerberos V5 ticket natively\n");
675 #ifndef HAVE_NO_KRB5_524
676 status = krb5_524_conv_principal (context, v5cred->client,
681 afs_com_err(progname, status, "while converting principal "
682 "to Kerberos V4 format");
683 return AKLOG_KERBEROS;
685 strcpy (username, k4name);
687 strcat (username, ".");
688 strcat (username, k4inst);
691 len = min(get_princ_len(context, v5cred->client, 0),
692 second_comp(context, v5cred->client) ?
693 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
694 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
695 username[len] = '\0';
697 if (second_comp(context, v5cred->client)) {
698 strcat(username, ".");
699 p = username + strlen(username);
700 len = min(get_princ_len(context, v5cred->client, 1),
701 MAXKTCNAMELEN - strlen(username) - 1);
702 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
707 token = malloc(sizeof(struct ktc_tokenUnion));
711 memset(token, 0, sizeof(struct ktc_tokenUnion));
713 token->at_type = AFSTOKEN_UNION_KAD;
714 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
716 rxkadToken->rk_kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
717 rxkadToken->rk_begintime = v5cred->times.starttime;;
718 rxkadToken->rk_endtime = v5cred->times.endtime;
719 memcpy(&rxkadToken->rk_key, get_cred_keydata(v5cred),
720 get_cred_keylen(v5cred));
721 rxkadToken->rk_ticket.rk_ticket_len = v5cred->ticket.length;
722 rxkadToken->rk_ticket.rk_ticket_val = malloc(v5cred->ticket.length);
723 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
727 memcpy(rxkadToken->rk_ticket.rk_ticket_val, v5cred->ticket.data,
728 rxkadToken->rk_ticket.rk_ticket_len);
731 *userPtr = strdup(username);
737 * Convert a Keberos ticket to an rxkad token, using information obtained
738 * from an external Kerberos 5->4 conversion service. If the code is built
739 * with HAVE_NO_KRB5_524 then this is a stub function which will always
740 * return success without a token.
743 * An initialised Kerberos 5 context
745 * A Kerberos credentials structure containing a suitable service ticket
746 * @param[out] tokenPtr
747 * An AFS token structure containing an rxkad token. This is a malloc'd
748 * structure which should be freed by the caller.
749 * @param[out[ userPtr
750 * A string containing the principal of the user to whom the token was
751 * issued. This is a malloc'd block which should be freed by the caller.
754 * 0 on success, an error value upon failure
757 #ifdef HAVE_NO_KRB5_524
759 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
760 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
768 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
769 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
771 char username[BUFSIZ];
772 struct ktc_tokenUnion *token;
773 struct token_rxkad *rxkadToken;
779 afs_dprintf("Using Kerberos 524 translator service\n");
781 status = krb5_524_convert_creds(context, v5cred, &cred);
784 afs_com_err(progname, status, "while converting tickets "
785 "to Kerberos V4 format");
786 return AKLOG_KERBEROS;
789 strcpy (username, cred.pname);
791 strcat (username, ".");
792 strcat (username, cred.pinst);
795 token = malloc(sizeof(struct ktc_tokenUnion));
798 memset(token, 0, sizeof(struct ktc_tokenUnion));
800 token->at_type = AFSTOKEN_UNION_KAD;
802 rxkadToken = &token->ktc_tokenUnion_u.at_kad;
803 rxkadToken->rk_kvno = cred.kvno;
804 rxkadToken->rk_begintime = cred.issue_date;
806 * It seems silly to go through a bunch of contortions to
807 * extract the expiration time, when the v5 credentials already
808 * has the exact time! Let's use that instead.
810 * Note that this isn't a security hole, as the expiration time
811 * is also contained in the encrypted token
813 rxkadToken->rk_endtime = v5cred->times.endtime;
814 memcpy(&rxkadToken->rk_key, cred.session, 8);
815 rxkadToken->rk_ticket.rk_ticket_len = cred.ticket_st.length;
816 rxkadToken->rk_ticket.rk_ticket_val = malloc(cred.ticket_st.length);
817 if (rxkadToken->rk_ticket.rk_ticket_val == NULL) {
821 memcpy(rxkadToken->rk_ticket.rk_ticket_val, cred.ticket_st.dat,
822 rxkadToken->rk_ticket.rk_ticket_len);
825 *userPtr = strdup(username);
832 * This function gets an rxkad token for a given cell.
835 * An initialized Kerberos v5 context
837 * The cell information for the cell which we're obtaining a token for
839 * The realm to look in for the service principal. If NULL, then the
840 * realm is determined from the cell name or the user's credentials
841 * (see the documentation for rxkad_get_ticket)
843 * The rxkad token produced. This is a malloc'd structure which should
844 * be freed by the caller.
845 * @parma[out] authuser
846 * A string containing the principal of the user to whom the token was
847 * issued. This is a malloc'd block which should be freed by the caller.
848 * @param[out] foreign
849 * Whether the user is considered as 'foreign' to the realm of the cell.
852 * 0 on success, an error value upon failuer
855 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
856 struct ktc_tokenUnion **token, char **authuser, int *foreign) {
858 char *realmUsed = NULL;
859 char *username = NULL;
867 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
872 status = rxkad_get_converted_token(context, v5cred, token, &username);
874 status = rxkad_build_native_token(context, v5cred, token, &username);
879 /* We now have the username, plus the realm name, so stitch them together
880 * to give us the name that the ptserver will know the user by */
881 if (realmUsed == NULL) {
882 *authuser = username;
886 len = strlen(username)+strlen(realmUsed)+2;
887 *authuser = malloc(len);
888 afs_snprintf(*authuser, len, "%s@%s", username, realmUsed);
902 * Log to a cell. If the cell has already been logged to, return without
903 * doing anything. Otherwise, log to it and mark that it has been logged
907 auth_to_cell(krb5_context context, char *cell, char *realm, char **linkedcell)
909 int status = AKLOG_SUCCESS;
911 char *username = NULL; /* To hold client username structure */
912 afs_int32 viceId; /* AFS uid of user */
914 char *local_cell = NULL;
915 struct ktc_tokenUnion *rxkadToken = NULL;
916 struct ktc_setTokenData *token;
917 struct ktc_setTokenData *btoken = NULL;
918 struct afsconf_cell cellconf;
920 /* NULL or empty cell returns information on local cell */
921 if ((status = get_cellconfig(cell, &cellconf, &local_cell)))
924 if (linkedcell != NULL) {
925 if (cellconf.linkedCell != NULL) {
926 *linkedcell = strdup(cellconf.linkedCell);
927 if (*linkedcell == NULL) {
936 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
937 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
938 status = AKLOG_SUCCESS;
943 * Record that we have attempted to log to this cell. We do this
944 * before we try rather than after so that we will not try
945 * and fail repeatedly for one cell.
947 ll_string(&authedcells, ll_s_add, cellconf.name);
950 * Record this cell in the list of zephyr subscriptions. We may
951 * want zephyr subscriptions even if authentication fails.
952 * If this is done after we attempt to get tokens, aklog -zsubs
953 * can return something different depending on whether or not we
954 * are in -noauth mode.
956 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
958 "%s: failure adding cell %s to zephyr subscriptions list.\n",
959 progname, cellconf.name);
962 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
964 "%s: failure adding cell %s to zephyr subscriptions list.\n",
965 progname, local_cell);
970 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
971 cellconf.hostName[0]);
973 token = token_buildTokenJar(cellconf.name);
979 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
980 &username, &isForeign);
984 /* We need to keep the token structure around so that we can stick
985 * the viceId into it (once we know it) */
986 status = token_addToken(token, rxkadToken);
988 afs_dprintf("Add Token failed with %d", status);
993 ktc_GetTokenEx(cellconf.name, &btoken) == 0 &&
994 token_SetsEquivalent(token, btoken)) {
996 token_FreeSet(&btoken);
997 afs_dprintf("Identical tokens already exist; skipping.\n");
998 status = AKLOG_SUCCESS;
1003 token_FreeSet(&btoken);
1010 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1013 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1016 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1017 status = pr_SNameToId (username, &viceId);
1020 afs_dprintf("Error %d\n", status);
1022 afs_dprintf("Id %d\n", (int) viceId);
1026 * This code is taken from cklog -- it lets people
1027 * automatically register with the ptserver in foreign cells
1030 #ifdef ALLOW_REGISTER
1031 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1032 afs_dprintf("doing first-time registration of %s at %s\n",
1033 username, cellconf.name);
1036 status = ktc_SetTokenEx(token);
1038 afs_com_err(progname, status,
1039 "while obtaining tokens for cell %s",
1041 status = AKLOG_TOKEN;
1045 * In case you're wondering, we don't need to change the
1046 * filename here because we're still connecting to the
1047 * same cell -- we're just using a different authenticat ion
1051 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1053 printf("Error %d\n", status);
1056 if ((status = pr_CreateUser(username, &viceId))) {
1057 fprintf(stderr, "%s: %s so unable to create remote PTS "
1058 "user %s in cell %s (status: %d).\n", progname,
1059 afs_error_message(status), username, cellconf.name,
1061 viceId = ANONYMOUSID;
1063 printf("created cross-cell entry for %s (Id %d) at %s\n",
1064 username, viceId, cellconf.name);
1067 #endif /* ALLOW_REGISTER */
1069 if ((status == 0) && (viceId != ANONYMOUSID)) {
1070 rxkadToken->ktc_tokenUnion_u.at_kad.rk_viceid = viceId;
1071 token_replaceToken(token, rxkadToken);
1075 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1077 #ifndef AFS_AIX51_ENV
1078 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1079 * this routine, it will not add the token. It is not clear what
1080 * is going on here! So we will do the following operation.
1081 * On AIX 5, it causes the parent program to die, so we won't.
1083 write(2,"",0); /* dummy write */
1085 token_setPag(token, afssetpag);
1086 status = ktc_SetTokenEx(token);
1088 afs_com_err(progname, status, "while setting tokens for cell %s",
1090 status = AKLOG_TOKEN;
1094 afs_dprintf("Noauth mode; not authenticating.\n");
1098 free(rxkadToken->ktc_tokenUnion_u.at_kad.rk_ticket.rk_ticket_val);
1111 get_afs_mountpoint(char *file, char *mountpoint, int size)
1114 char V ='V'; /* AFS has problem on Sun with pioctl */
1116 char our_file[MAXPATHLEN + 1];
1118 char *last_component;
1119 struct ViceIoctl vio;
1120 char cellname[BUFSIZ];
1122 memset(our_file, 0, sizeof(our_file));
1123 strcpy(our_file, file);
1125 if ((last_component = strrchr(our_file, DIR))) {
1126 *last_component++ = 0;
1127 parent_dir = our_file;
1130 last_component = our_file;
1134 memset(cellname, 0, sizeof(cellname));
1136 vio.in = last_component;
1137 vio.in_size = strlen(last_component)+1;
1138 vio.out_size = size;
1139 vio.out = mountpoint;
1141 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1142 if (strchr(mountpoint, VOLMARKER) == NULL) {
1144 vio.in_size = strlen(file) + 1;
1145 vio.out_size = sizeof(cellname);
1148 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1149 strcat(cellname, VOLMARKERSTRING);
1150 strcat(cellname, mountpoint + 1);
1151 memset(mountpoint + 1, 0, size - 1);
1152 strcpy(mountpoint + 1, cellname);
1162 * This routine each time it is called returns the next directory
1163 * down a pathname. It resolves all symbolic links. The first time
1164 * it is called, it should be called with the name of the path
1165 * to be descended. After that, it should be called with the arguemnt
1169 next_path(char *origpath)
1171 static char path[MAXPATHLEN + 1];
1172 static char pathtocheck[MAXPATHLEN + 1];
1174 int link = FALSE; /* Is this a symbolic link? */
1175 char linkbuf[MAXPATHLEN + 1];
1176 char tmpbuf[MAXPATHLEN + 1];
1178 static char *last_comp; /* last component of directory name */
1179 static char *elast_comp; /* End of last component */
1183 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1185 /* If we are given something for origpath, we are initializing only. */
1187 memset(path, 0, sizeof(path));
1188 memset(pathtocheck, 0, sizeof(pathtocheck));
1189 strcpy(path, origpath);
1195 /* We were not given origpath; find then next path to check */
1197 /* If we've gotten all the way through already, return NULL */
1198 if (last_comp == NULL)
1202 while (*last_comp == DIR)
1203 strncat(pathtocheck, last_comp++, 1);
1204 len = (elast_comp = strchr(last_comp, DIR))
1205 ? elast_comp - last_comp : strlen(last_comp);
1206 strncat(pathtocheck, last_comp, len);
1207 memset(linkbuf, 0, sizeof(linkbuf));
1208 if ((link = (readlink(pathtocheck, linkbuf,
1209 sizeof(linkbuf)) > 0))) {
1210 if (++symlinkcount > MAXSYMLINKS) {
1211 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1212 exit(AKLOG_BADPATH);
1214 memset(tmpbuf, 0, sizeof(tmpbuf));
1216 strcpy(tmpbuf, elast_comp);
1217 if (linkbuf[0] == DIR) {
1219 * If this is a symbolic link to an absolute path,
1220 * replace what we have by the absolute path.
1222 memset(path, 0, strlen(path));
1223 memcpy(path, linkbuf, sizeof(linkbuf));
1224 strcat(path, tmpbuf);
1227 memset(pathtocheck, 0, sizeof(pathtocheck));
1231 * If this is a symbolic link to a relative path,
1232 * replace only the last component with the link name.
1234 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1235 strcat(path, tmpbuf);
1237 if ((t = strrchr(pathtocheck, DIR))) {
1239 memset(t, 0, strlen(t));
1242 memset(pathtocheck, 0, sizeof(pathtocheck));
1246 last_comp = elast_comp;
1250 return(pathtocheck);
1254 add_hosts(char *file)
1257 char V = 'V'; /* AFS has problem on SunOS */
1259 struct ViceIoctl vio;
1260 char outbuf[BUFSIZ];
1266 memset(outbuf, 0, sizeof(outbuf));
1268 vio.out_size = sizeof(outbuf);
1272 afs_dprintf("Getting list of hosts for %s\n", file);
1274 /* Don't worry about errors. */
1275 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1276 phosts = (long *) outbuf;
1279 * Lists hosts that we care about. If ALLHOSTS is defined,
1280 * then all hosts that you ever may possible go through are
1281 * included in this list. If not, then only hosts that are
1282 * the only ones appear. That is, if a volume you must use
1283 * is replaced on only one server, that server is included.
1284 * If it is replicated on many servers, then none are included.
1285 * This is not perfect, but the result is that people don't
1286 * get subscribed to a lot of instances of FILSRV that they
1287 * probably won't need which reduces the instances of
1288 * people getting messages that don't apply to them.
1291 if (phosts[1] != '\0')
1294 for (i = 0; phosts[i]; i++) {
1296 in.s_addr = phosts[i];
1297 afs_dprintf("Got host %s\n", inet_ntoa(in));
1298 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1300 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1301 afs_dprintf("Got host %s\n", hp->h_name);
1302 ll_string(&zsublist, ll_s_add, hp->h_name);
1309 * This routine descends through a path to a directory, logging to
1310 * every cell it encounters along the way.
1313 auth_to_path(krb5_context context, char *path)
1315 int status = AKLOG_SUCCESS;
1316 int auth_status = AKLOG_SUCCESS;
1319 char pathtocheck[MAXPATHLEN + 1];
1320 char mountpoint[MAXPATHLEN + 1];
1329 strcpy(pathtocheck, path);
1331 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1332 fprintf(stderr, "Unable to find current working directory:\n");
1333 fprintf(stderr, "%s\n", pathtocheck);
1334 fprintf(stderr, "Try an absolute pathname.\n");
1335 exit(AKLOG_BADPATH);
1338 strcat(pathtocheck, DIRSTRING);
1339 strcat(pathtocheck, path);
1342 next_path(pathtocheck);
1344 /* Go on to the next level down the path */
1345 while ((nextpath = next_path(NULL))) {
1346 strcpy(pathtocheck, nextpath);
1347 afs_dprintf("Checking directory %s\n", pathtocheck);
1349 * If this is an afs mountpoint, determine what cell from
1350 * the mountpoint name which is of the form
1351 * #cellname:volumename or %cellname:volumename.
1353 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1354 /* skip over the '#' or '%' */
1355 cell = mountpoint + 1;
1356 /* Add this (cell:volumename) to the list of zsubs */
1358 ll_string(&zsublist, ll_s_add, cell);
1360 add_hosts(pathtocheck);
1361 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1363 if ((auth_status = auth_to_cell(context, cell, NULL, NULL))) {
1364 if (status == AKLOG_SUCCESS)
1365 status = auth_status;
1366 else if (status != auth_status)
1367 status = AKLOG_SOMETHINGSWRONG;
1372 if (isdir(pathtocheck, &isdirectory) < 0) {
1374 * If we've logged and still can't stat, there's
1377 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1378 pathtocheck, strerror(errno));
1379 return(AKLOG_BADPATH);
1381 else if (! isdirectory) {
1382 /* Allow only directories */
1383 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1385 return(AKLOG_BADPATH);
1395 /* Print usage message and exit */
1399 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1400 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1401 "[[-p | -path] pathname]\n",
1402 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1404 #ifndef HAVE_NO_KRB5_524
1408 fprintf(stderr, " -d gives debugging information.\n");
1409 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1410 fprintf(stderr, " pathname is the name of a directory to which ");
1411 fprintf(stderr, "you wish to authenticate.\n");
1412 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1413 fprintf(stderr, " -hosts gives host address information.\n");
1414 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1415 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1416 fprintf(stderr, " -force means replace identical tickets. \n");
1417 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1418 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1419 #ifndef HAVE_NO_KRB5_524
1420 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1422 fprintf(stderr, " No commandline arguments means ");
1423 fprintf(stderr, "authenticate to the local cell.\n");
1424 fprintf(stderr, "\n");
1429 main(int argc, char *argv[])
1431 krb5_context context;
1432 int status = AKLOG_SUCCESS;
1434 int somethingswrong = FALSE;
1436 cellinfo_t cellinfo;
1438 extern char *progname; /* Name of this program */
1440 int cmode = FALSE; /* Cellname mode */
1441 int pmode = FALSE; /* Path name mode */
1443 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1444 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1445 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1447 linked_list cells; /* List of cells to log to */
1448 linked_list paths; /* List of paths to log to */
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 krb5_init_context(&context);
1471 initialize_KTC_error_table ();
1472 initialize_U_error_table();
1473 initialize_RXK_error_table();
1474 initialize_ACFG_error_table();
1475 initialize_PT_error_table();
1476 afs_set_com_err_hook(redirect_errors);
1479 * Enable DES enctypes, which are currently still required for AFS.
1480 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1483 #if defined(HAVE_KRB5_ENCTYPE_ENABLE)
1484 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1486 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1487 #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1488 krb5_allow_weak_crypto(context, 1);
1491 /* Initialize list of cells to which we have authenticated */
1492 ll_init(&authedcells);
1494 /* Parse commandline arguments and make list of what to do. */
1495 for (i = 1; i < argc; i++) {
1496 if (strcmp(argv[i], "-d") == 0)
1498 else if (strcmp(argv[i], "-noauth") == 0)
1500 else if (strcmp(argv[i], "-zsubs") == 0)
1502 else if (strcmp(argv[i], "-hosts") == 0)
1504 else if (strcmp(argv[i], "-noprdb") == 0)
1506 else if (strcmp(argv[i], "-linked") == 0)
1508 else if (strcmp(argv[i], "-force") == 0)
1510 #ifndef HAVE_NO_KRB5_524
1511 else if (strcmp(argv[i], "-524") == 0)
1514 else if (strcmp(argv[i], "-setpag") == 0)
1516 else if (((strcmp(argv[i], "-cell") == 0) ||
1517 (strcmp(argv[i], "-c") == 0)) && !pmode)
1520 strcpy(cell, argv[i]);
1524 else if ((strcmp(argv[i], "-keytab") == 0))
1530 else if ((strcmp(argv[i], "-principal") == 0))
1536 else if (((strcmp(argv[i], "-path") == 0) ||
1537 (strcmp(argv[i], "-p") == 0)) && !cmode)
1540 strcpy(path, argv[i]);
1545 else if (argv[i][0] == '-')
1547 else if (!pmode && !cmode) {
1548 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1549 (strcmp(argv[i], "..") == 0)) {
1551 strcpy(path, argv[i]);
1555 strcpy(cell, argv[i]);
1562 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1565 strcpy(realm, argv[i]);
1569 /* Add this cell to list of cells */
1570 strcpy(cellinfo.cell, cell);
1571 strcpy(cellinfo.realm, realm);
1572 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1574 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1575 ll_add_data(cur_node, new_cellinfo);
1578 "%s: failure copying cellinfo.\n", progname);
1583 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1587 memset(&cellinfo, 0, sizeof(cellinfo));
1589 memset(cell, 0, sizeof(cell));
1590 memset(realm, 0, sizeof(realm));
1593 /* Add this path to list of paths */
1594 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1596 if ((new_path = strdup(path)))
1597 ll_add_data(cur_node, new_path);
1599 fprintf(stderr, "%s: failure copying path name.\n",
1605 fprintf(stderr, "%s: failure adding path to paths list.\n",
1610 memset(path, 0, sizeof(path));
1614 /* If nothing was given, log to the local cell. */
1615 if ((cells.nelements + paths.nelements) == 0) {
1618 status = auth_to_cell(context, NULL, NULL, &linkedcell);
1620 /* If this cell is linked to a DCE cell, and user requested -linked,
1621 * get tokens for both. This is very useful when the AFS cell is
1622 * linked to a DFS cell and this system does not also have DFS.
1625 if (!status && linked && linkedcell != NULL) {
1626 afs_dprintf("Linked cell: %s\n", linkedcell);
1627 status = auth_to_cell(context, linkedcell, NULL, NULL);
1635 * Local hack - if the person has a file in their home
1636 * directory called ".xlog", read that for a list of
1637 * extra cells to authenticate to
1640 if ((pwd = getpwuid(getuid())) != NULL) {
1643 char fcell[100], xlog_path[512];
1645 strcpy(xlog_path, pwd->pw_dir);
1646 strcat(xlog_path, "/.xlog");
1648 if ((stat(xlog_path, &sbuf) == 0) &&
1649 ((f = fopen(xlog_path, "r")) != NULL)) {
1651 afs_dprintf("Reading %s for cells to authenticate to.\n",
1654 while (fgets(fcell, 100, f) != NULL) {
1657 fcell[strlen(fcell) - 1] = '\0';
1659 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1661 auth_status = auth_to_cell(context, fcell, NULL, NULL);
1662 if (status == AKLOG_SUCCESS)
1663 status = auth_status;
1665 status = AKLOG_SOMETHINGSWRONG;
1671 /* Log to all cells in the cells list first */
1672 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1673 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1674 if ((status = auth_to_cell(context, cellinfo.cell, cellinfo.realm,
1678 if (linked && linkedcell != NULL) {
1679 afs_dprintf("Linked cell: %s\n", linkedcell);
1680 if ((status = auth_to_cell(context, linkedcell,
1681 cellinfo.realm, NULL)))
1684 if (linkedcell != NULL) {
1691 /* Then, log to all paths in the paths list */
1692 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1693 if ((status = auth_to_path(context, cur_node->data)))
1698 * If only one thing was logged to, we'll return the status
1699 * of the single call. Otherwise, we'll return a generic
1700 * something failed status.
1702 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1703 status = AKLOG_SOMETHINGSWRONG;
1706 /* If we are keeping track of zephyr subscriptions, print them. */
1708 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1709 printf("zsub: %s\n", cur_node->data);
1712 /* If we are keeping track of host information, print it. */
1714 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1715 printf("host: %s\n", cur_node->data);
1722 isdir(char *path, unsigned char *val)
1724 struct stat statbuf;
1726 if (lstat(path, &statbuf) < 0)
1729 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1737 static krb5_error_code
1738 get_credv5_akimpersonate(krb5_context context,
1740 krb5_principal service_principal,
1741 krb5_principal client_principal,
1744 int *allowed_enctypes,
1746 krb5_creds** out_creds /* out */ )
1748 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1749 krb5_error_code code;
1751 krb5_kt_cursor cursor[1];
1752 krb5_keytab_entry entry[1];
1754 krb5_creds *creds = 0;
1755 krb5_enctype enctype;
1757 krb5_keyblock session_key[1];
1759 Ticket ticket_reply[1];
1760 EncTicketPart enc_tkt_reply[1];
1761 krb5_address address[30];
1762 krb5_addresses faddr[1];
1764 time_t temp_time[2];
1766 krb5_ticket ticket_reply[1];
1767 krb5_enc_tkt_part enc_tkt_reply[1];
1768 krb5_address address[30], *faddr[30];
1772 static int any_enctype[] = {0};
1774 if (!(creds = malloc(sizeof *creds))) {
1778 if (!allowed_enctypes)
1779 allowed_enctypes = any_enctype;
1782 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1783 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1784 memset((char*)creds, 0, sizeof *creds);
1785 memset((char*)entry, 0, sizeof *entry);
1786 memset((char*)session_key, 0, sizeof *session_key);
1787 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1788 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1789 code = krb5_kt_resolve(context, keytab, &kt);
1792 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1794 afs_com_err(progname, code, "while resolving default keytab");
1798 if (service_principal) {
1799 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1800 code = krb5_kt_get_entry(context,
1807 if (allowed_enctypes[i])
1808 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1813 afs_com_err(progname, code,"while scanning keytab entries");
1817 krb5_keytab_entry new[1];
1819 memset(new, 0, sizeof *new);
1820 if ((code == krb5_kt_start_seq_get(context, kt, cursor))) {
1821 afs_com_err(progname, code, "while starting keytab scan");
1824 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1826 allowed_enctypes[i] && allowed_enctypes[i]
1827 != deref_entry_enctype(new); ++i)
1829 if ((!i || allowed_enctypes[i]) &&
1830 (best < 0 || best > i)) {
1831 krb5_free_keytab_entry_contents(context, entry);
1833 memset(new, 0, sizeof *new);
1834 } else krb5_free_keytab_entry_contents(context, new);
1836 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1837 afs_com_err(progname, i, "while ending keytab scan");
1842 afs_com_err(progname, code, "while scanning keytab");
1845 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1851 if ((code = krb5_generate_random_keyblock(context,
1852 deref_keyblock_enctype(session_key), session_key))) {
1853 afs_com_err(progname, code, "while making session key");
1856 enc_tkt_reply->flags.initial = 1;
1857 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1858 enc_tkt_reply->cname = client_principal->name;
1859 enc_tkt_reply->crealm = client_principal->realm;
1860 enc_tkt_reply->key = *session_key;
1862 static krb5_data empty_string;
1863 enc_tkt_reply->transited.contents = empty_string;
1865 enc_tkt_reply->authtime = starttime;
1866 enc_tkt_reply->starttime = temp_time;
1867 *enc_tkt_reply->starttime = starttime;
1869 enc_tkt_reply->renew_till = temp_time + 1;
1870 *enc_tkt_reply->renew_till = endtime;
1872 enc_tkt_reply->endtime = endtime;
1874 if ((code = krb5_c_make_random_key(context,
1875 deref_keyblock_enctype(session_key), session_key))) {
1876 afs_com_err(progname, code, "while making session key");
1879 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1880 #define DATACAST (unsigned char *)
1881 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1882 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1883 enc_tkt_reply->session = session_key;
1884 enc_tkt_reply->client = client_principal;
1886 static krb5_data empty_string;
1887 enc_tkt_reply->transited.tr_contents = empty_string;
1889 enc_tkt_reply->times.authtime = starttime;
1890 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1891 enc_tkt_reply->times.endtime = endtime;
1892 #endif /* USING_HEIMDAL */
1893 /* NB: We will discard address for now--ignoring caddr field
1894 in any case. MIT branch does what it always did. */
1896 if (paddress && *paddress) {
1897 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1900 faddr->val = address;
1902 for (i = 0; paddress[i]; ++i) {
1904 address[i].addr_type = KRB5_ADDRESS_INET;
1905 address[i].address.data = (void*)(paddress+i);
1906 address[i].address.length = sizeof(paddress[i]);
1909 address[i].magic = KV5M_ADDRESS;
1910 address[i].addrtype = ADDRTYPE_INET;
1912 address[i].addrtype = AF_INET;
1914 address[i].contents = (void*)(paddress+i);
1915 address[i].length = sizeof(int);
1916 faddr[i] = address+i;
1927 ticket_reply->sname = service_principal->name;
1928 ticket_reply->realm = service_principal->realm;
1930 { /* crypto block */
1931 krb5_crypto crypto = 0;
1932 unsigned char *buf = 0;
1933 size_t buf_size, buf_len;
1936 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
1937 enc_tkt_reply, &buf_len, code);
1939 afs_com_err(progname, code, "while encoding ticket");
1943 if(buf_len != buf_size) {
1944 afs_com_err(progname, code,
1945 "%u != %u while encoding ticket (internal ASN.1 encoder error",
1946 (unsigned int)buf_len, (unsigned int)buf_size);
1949 what = "krb5_crypto_init";
1950 code = krb5_crypto_init(context,
1951 &deref_entry_keyblock(entry),
1952 deref_entry_enctype(entry),
1955 what = "krb5_encrypt";
1956 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
1957 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
1960 if (crypto) krb5_crypto_destroy(context, crypto);
1962 afs_com_err(progname, code, "while %s", what);
1965 } /* crypto block */
1966 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
1967 ticket_reply->enc_part.kvno = temp_vno;
1968 *ticket_reply->enc_part.kvno = entry->vno;
1969 ticket_reply->tkt_vno = 5;
1971 ticket_reply->server = service_principal;
1972 ticket_reply->enc_part2 = enc_tkt_reply;
1973 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
1974 afs_com_err(progname, code, "while making ticket");
1977 ticket_reply->enc_part.kvno = entry->vno;
1980 /* Construct Creds */
1982 if ((code = krb5_copy_principal(context, service_principal,
1984 afs_com_err(progname, code, "while copying service principal");
1987 if ((code = krb5_copy_principal(context, client_principal,
1989 afs_com_err(progname, code, "while copying client principal");
1992 if ((code = krb5_copy_keyblock_contents(context, session_key,
1993 &deref_session_key(creds)))) {
1994 afs_com_err(progname, code, "while copying session key");
1999 creds->times.authtime = enc_tkt_reply->authtime;
2000 creds->times.starttime = *(enc_tkt_reply->starttime);
2001 creds->times.endtime = enc_tkt_reply->endtime;
2002 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2003 creds->flags.b = enc_tkt_reply->flags;
2005 creds->times = enc_tkt_reply->times;
2006 creds->ticket_flags = enc_tkt_reply->flags;
2008 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2010 else if ((code = krb5_copy_addresses(context,
2011 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2012 afs_com_err(progname, code, "while copying addresses");
2018 size_t creds_tkt_len;
2019 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2020 ticket_reply, &creds_tkt_len, code);
2022 afs_com_err(progname, code, "while encoding ticket");
2027 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2028 afs_com_err(progname, code, "while encoding ticket");
2031 creds->ticket = *temp;
2038 if (deref_enc_data(&ticket_reply->enc_part))
2039 free(deref_enc_data(&ticket_reply->enc_part));
2040 krb5_free_keytab_entry_contents(context, entry);
2041 if (client_principal)
2042 krb5_free_principal(context, client_principal);
2043 if (service_principal)
2044 krb5_free_principal(context, service_principal);
2046 krb5_cc_close(context, cc);
2048 krb5_kt_close(context, kt);
2049 if (creds) krb5_free_creds(context, creds);
2050 krb5_free_keyblock_contents(context, session_key);
2058 static krb5_error_code
2059 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2064 static krb5_principal client_principal = 0;
2066 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2067 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2069 memset(&increds, 0, sizeof(increds));
2070 /* ANL - instance may be ptr to a null string. Pass null then */
2071 if ((r = krb5_build_principal(context, &increds.server,
2072 strlen(realm), realm,
2074 (inst && strlen(inst)) ? inst : (void *) NULL,
2080 if (!_krb425_ccache) {
2081 r = krb5_cc_default(context, &_krb425_ccache);
2085 if (!client_principal) {
2087 r = krb5_parse_name(context, client, &client_principal);
2089 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2095 increds.client = client_principal;
2096 increds.times.endtime = 0;
2097 /* Ask for DES since that is what V4 understands */
2098 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2101 int allowed_enctypes[] = {
2102 ENCTYPE_DES_CBC_CRC, 0
2105 r = get_credv5_akimpersonate(context,
2114 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2121 get_user_realm(krb5_context context, char **realm)
2123 static krb5_principal client_principal = 0;
2124 krb5_error_code r = 0;
2128 if (!_krb425_ccache)
2129 krb5_cc_default(context, &_krb425_ccache);
2130 if (!client_principal) {
2132 r = krb5_parse_name(context, client, &client_principal);
2134 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2140 *realm = extract_realm(context, client_principal);