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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>
46 #include <afs/token.h>
48 #define KERBEROS_APPLE_DEPRECATED(x)
52 #elif HAVE_ET_COM_ERR_H
53 # include <et/com_err.h>
54 #elif HAVE_KRB5_COM_ERR_H
55 # include <krb5/com_err.h>
57 # error No com_err.h? We need some kind of com_err.h
60 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
61 #include <afs/com_err.h>
65 #include <sys/ioccom.h>
69 #include <afs/cellconfig.h>
71 #include <afs/venus.h>
72 #include <afs/ptserver.h>
73 #include <afs/ptuser.h>
74 #include <afs/pterror.h>
75 #include <afs/dirpath.h>
76 #include <afs/afsutil.h>
79 #include "linked_list.h"
81 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
84 #ifdef HAVE_KRB5_CREDS_SESSION
85 #define USING_HEIMDAL 1
91 #ifndef AFS_TRY_FULL_PRINC
92 #define AFS_TRY_FULL_PRINC 1
93 #endif /* AFS_TRY_FULL_PRINC */
95 #define AKLOG_TRYAGAIN -1
96 #define AKLOG_SUCCESS 0
98 #define AKLOG_SOMETHINGSWRONG 2
100 #define AKLOG_KERBEROS 4
101 #define AKLOG_TOKEN 5
102 #define AKLOG_BADPATH 6
114 /* RedHat 4.x doesn't seem to define this */
115 #define MAXSYMLINKS 5
118 #define DIR '/' /* Character that divides directories */
119 #define DIRSTRING "/" /* String form of above */
120 #define VOLMARKER ':' /* Character separating cellname from mntpt */
121 #define VOLMARKERSTRING ":" /* String form of above */
122 #define AKIMP_LIFETIME_MAX 720 /* Max token lifetime for akimpersonate in hours (30 days) */
126 char realm[REALM_SZ];
129 static krb5_ccache _krb425_ccache = NULL;
132 * Why doesn't AFS provide these prototypes?
135 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
141 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
142 static int isdir(char *, unsigned char *);
143 static krb5_error_code get_credv5(krb5_context context, char *, char *,
144 char *, krb5_creds **);
145 static int get_user_realm(krb5_context, char **);
147 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
148 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
149 x == KRB5_KT_NOTFOUND || \
150 x == KRB5KRB_ERR_GENERIC)
152 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
154 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
155 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
156 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
157 #define realm_data(c, p) krb5_princ_realm(c, p)->data
158 #define realm_len(c, p) krb5_princ_realm(c, p)->length
160 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
162 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
163 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
164 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
165 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
166 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
169 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
172 #if defined(HAVE_ENCODE_KRB5_TICKET)
173 extern krb5_error_code encode_krb5_ticket (const krb5_ticket *rep,
177 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
178 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
182 krb5_encrypt_tkt_part(krb5_context context,
183 const krb5_keyblock *key,
190 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
192 if ((code = krb5_c_encrypt_length(context, key->enctype,
193 data->length, &enclen)))
195 ticket->enc_part.ciphertext.length = enclen;
196 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
200 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
201 0, data, &ticket->enc_part))) {
202 free(ticket->enc_part.ciphertext.data);
203 ticket->enc_part.ciphertext.data = 0;
215 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
217 #define get_cred_keydata(c) c->keyblock.contents
218 #define get_cred_keylen(c) c->keyblock.length
219 #define get_creds_enctype(c) c->keyblock.enctype
221 #elif defined(HAVE_KRB5_CREDS_SESSION)
223 #define get_cred_keydata(c) c->session.keyvalue.data
224 #define get_cred_keylen(c) c->session.keyvalue.length
225 #define get_creds_enctype(c) c->session.keytype
228 #error "Must have either keyblock or session member of krb5_creds"
231 /* MITKerberosShim logs but returns success */
232 #if !defined(HAVE_KRB5_524_CONV_PRINCIPAL) || defined(AFS_DARWIN110_ENV) || (!defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC))
233 #define HAVE_NO_KRB5_524
234 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
235 #define krb5_524_convert_creds krb524_convert_creds_kdc
239 #define deref_keyblock_enctype(kb) \
242 #define deref_entry_keyblock(entry) \
245 #define deref_session_key(creds) \
248 #define deref_enc_tkt_addrs(tkt) \
251 #define deref_enc_length(enc) \
252 ((enc)->cipher.length)
254 #define deref_enc_data(enc) \
257 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
260 #define deref_keyblock_enctype(kb) \
263 #define deref_entry_keyblock(entry) \
266 #define deref_session_key(creds) \
269 #define deref_enc_tkt_addrs(tkt) \
272 #define deref_enc_length(enc) \
273 ((enc)->ciphertext.length)
275 #define deref_enc_data(enc) \
276 ((enc)->ciphertext.data)
280 #define deref_entry_enctype(entry) \
281 deref_keyblock_enctype(&deref_entry_keyblock(entry))
284 * Provide a replacement for strerror if we don't have it
287 #ifndef HAVE_STRERROR
288 extern char *sys_errlist[];
289 #define strerror(x) sys_errlist[x]
290 #endif /* HAVE_STRERROR */
292 static char *progname = NULL; /* Name of this program */
293 static int dflag = FALSE; /* Give debugging information */
294 static int noauth = FALSE; /* If true, don't try to get tokens */
295 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
296 static int hosts = FALSE; /* Are we keeping track of hosts? */
297 static int noprdb = FALSE; /* Skip resolving name to id? */
298 static int linked = FALSE; /* try for both AFS nodes */
299 static int afssetpag = FALSE; /* setpag for AFS */
300 static int force = FALSE; /* Bash identical tokens? */
301 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
302 static char *keytab = NULL; /* keytab for akimpersonate */
303 static char *client = NULL; /* client principal for akimpersonate */
304 static linked_list zsublist; /* List of zephyr subscriptions */
305 static linked_list hostlist; /* List of host addresses */
306 static linked_list authedcells; /* List of cells already logged to */
307 static int akimp_lifetime = 36000; /* Lifetime for akimpersonate tokens. Default 10 hrs */
308 static int akimplifetime_present = 0; /* Whether a lifetime was specified for akimpersonate */
310 /* A com_error bodge. The idea here is that this routine lets us lookup
311 * things in the system com_err, if the AFS one just tells us the error
316 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
323 const char *str = afs_error_message(code);
324 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
325 #ifdef HAVE_KRB5_SVC_GET_MSG
326 krb5_svc_get_msg(code,&str);
327 #elif defined(HAVE_KRB5_GET_ERROR_MESSAGE)
328 krb5_context context;
329 if (krb5_init_context(&context) == 0) {
330 str = krb5_get_error_message(context, code);
331 krb5_free_context(context);
334 ; /* IRIX apparently has neither: use the string we have */
339 #ifdef HAVE_KRB5_SVC_GET_MSG
340 krb5_free_string(str);
344 vfprintf(stderr, fmt, ap);
351 afs_dprintf(char *fmt, ...) {
361 copy_cellinfo(cellinfo_t *cellinfo)
363 cellinfo_t *new_cellinfo;
365 if ((new_cellinfo = malloc(sizeof(cellinfo_t))))
366 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
368 return ((char *)new_cellinfo);
373 get_cellconfig(const char *config, char *cell,
374 struct afsconf_cell *cellconfig, char **local_cell)
376 int status = AKLOG_SUCCESS;
377 struct afsconf_dir *configdir;
379 memset(cellconfig, 0, sizeof(*cellconfig));
381 *local_cell = malloc(MAXCELLCHARS);
382 if (*local_cell == NULL) {
383 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
388 if (!(configdir = afsconf_Open(config))) {
390 "%s: can't get afs configuration (afsconf_Open(%s))\n",
395 if (cell != NULL && cell[0] == '\0') {
396 /* Use the local cell */
400 /* XXX - This function modifies 'cell' by passing it through lcstring */
401 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
403 fprintf(stderr, "%s: Can't get information about cell %s.\n",
406 fprintf(stderr, "%s: Can't get information about the local cell.\n",
410 } else if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
411 fprintf(stderr, "%s: can't determine local cell.\n", progname);
415 afsconf_Close(configdir);
421 extract_realm(krb5_context context, krb5_principal princ) {
425 len = realm_len(context, princ);
426 if (len > REALM_SZ-1)
429 realm = malloc(sizeof(char) * (len+1));
433 strncpy(realm, realm_data(context, princ), len);
440 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
441 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
442 krb5_error_code code;
447 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
451 *realm = extract_realm(context, ticket->server);
455 krb5_free_ticket(context, ticket);
465 * Get a Kerberos service ticket to use as the base of an rxkad token for
469 * An initialized Kerberos v5 context
471 * The realm to look in for the service principal. If NULL, then the
472 * realm is determined from the cell name or the user's credentials
473 * (see below for the heuristics used)
475 * The cell information for the cell to obtain a ticket for
477 * A Kerberos credentials structure containing the ticket acquired
478 * for the cell. This is a dynamically allocated structure, which
479 * should be freed by using the appropriate Kerberos API function.
480 * @param[out] realmUsed
481 * The realm in which the cell's service principal was located. If
482 * unset, then the principal was located in the same realm as the
483 * current user. This is a malloc'd string which should be freed
487 * 0 on success, an error value upon failure
490 * This code tries principals in the following, much debated,
493 * If the realm is specified on the command line we do
494 * - afs/cell@COMMAND-LINE-REALM
495 * - afs@COMMAND-LINE-REALM
498 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
499 * - afs/cell@krb5_get_host_realm(db-server)
500 * Then, if krb5_get_host_realm(db-server) is non-empty
501 * - afs@ krb5_get_host_realm(db-server)
503 * - afs/cell@ upper-case-domain-of-db-server
504 * - afs@ upper-case-domain-of-db-server
506 * In all cases, the 'afs@' variant is only tried where the
507 * cell and the realm match case-insensitively.
511 rxkad_get_ticket(krb5_context context, char *realm,
512 struct afsconf_cell *cell,
513 krb5_creds **v5cred, char **realmUsed) {
514 char *realm_of_cell = NULL;
515 char *realm_of_user = NULL;
516 char *realm_from_princ = NULL;
522 if ((status = get_user_realm(context, &realm_of_user))) {
523 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
524 afs_com_err(progname, status, " while getting realm");
525 status = AKLOG_KERBEROS;
532 /* Cell on command line - use that one */
533 if (realm && realm[0]) {
534 realm_of_cell = realm;
535 status = AKLOG_TRYAGAIN;
536 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
538 /* Initially, try using afs/cell@USERREALM */
539 afs_dprintf("Trying to authenticate to user's realm %s.\n",
541 realm_of_cell = realm_of_user;
542 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
545 /* If that failed, try to determine the realm from the name of
546 * one of the DB servers */
547 if (TRYAGAIN(status)) {
548 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
549 if (!realm_of_cell) {
550 fprintf(stderr, "%s: Couldn't figure out realm for cell "
551 "%s.\n", progname, cell->name);
555 if (realm_of_cell[0])
556 afs_dprintf("We've deduced that we need to authenticate"
557 " to realm %s.\n", realm_of_cell);
559 afs_dprintf("We've deduced that we need to authenticate "
560 "using referrals.\n");
564 if (TRYAGAIN(status)) {
565 /* If we've got the full-princ-first option, or we're in a
566 * different realm from the cell - use the cell name as the
568 if (AFS_TRY_FULL_PRINC ||
569 strcasecmp(cell->name, realm_of_cell)!=0) {
570 status = get_credv5(context, AFSKEY, cell->name,
571 realm_of_cell, v5cred);
573 /* If we failed & we've got an empty realm, then try
574 * calling afs_realm_for_cell again. */
575 if (TRYAGAIN(status) && !realm_of_cell[0]) {
576 /* This time, get the realm by taking the domain
577 * component of the db server and make it upper case */
578 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
579 if (!realm_of_cell) {
581 "%s: Couldn't figure out realm for cell %s.\n",
582 progname, cell->name);
585 afs_dprintf("We've deduced that we need to authenticate"
586 " to realm %s.\n", realm_of_cell);
587 status = get_credv5(context, AFSKEY, cell->name,
588 realm_of_cell, v5cred);
592 /* If the realm and cell name match, then try without an
593 * instance, but only if realm is non-empty */
595 if (TRYAGAIN(status) &&
596 strcasecmp(cell->name, realm_of_cell) == 0) {
597 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
599 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
600 status = get_credv5(context, AFSKEY, cell->name,
601 realm_of_cell, v5cred);
606 /* Try to find a service principal for this cell.
607 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
608 * the first attempt, so we try twice to be sure */
610 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
617 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
618 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
619 progname, cell->name);
620 afs_com_err(progname, status, "while getting AFS tickets");
621 #ifdef KRB5_CC_NOT_KTYPE
622 if (status == KRB5_CC_NOT_KTYPE) {
623 fprintf(stderr, "allow_weak_crypto may be required in the Kerberos configuration\n");
626 status = AKLOG_KERBEROS;
630 /* If we've got a valid ticket, and we still don't know the realm name
631 * try to figure it out from the contents of the ticket
633 if (strcmp(realm_of_cell, "") == 0) {
634 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
637 "%s: Couldn't decode ticket to determine realm for "
639 progname, cell->name);
641 if (realm_from_princ)
642 realm_of_cell = realm_from_princ;
646 /* If the realm of the user and cell differ, then we need to use the
647 * realm when we later construct the user's principal */
648 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
649 *realmUsed = realm_of_user;
652 if (realm_from_princ)
653 free(realm_from_princ);
654 if (realm_of_user && *realmUsed == NULL)
661 * Build an rxkad token from a Kerberos ticket, using only local tools (that
662 * is, without using a 524 conversion service)
665 * An initialised Kerberos 5 context
667 * A Kerberos credentials structure containing a suitable service ticket
668 * @param[out] tokenPtr
669 * An AFS token structure containing an rxkad token. This is a malloc'd
670 * structure which should be freed by the caller.
671 * @param[out[ userPtr
672 * A string containing the principal of the user to whom the token was
673 * issued. This is a malloc'd block which should be freed by the caller,
677 * 0 on success, an error value upon failure
680 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
681 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
682 char username[BUFSIZ]="";
683 struct ktc_token token;
685 #ifdef HAVE_NO_KRB5_524
689 char k4name[ANAME_SZ];
690 char k4inst[INST_SZ];
691 char k4realm[REALM_SZ];
693 void *inkey = get_cred_keydata(v5cred);
694 size_t inkey_sz = get_cred_keylen(v5cred);
696 afs_dprintf("Using Kerberos V5 ticket natively\n");
701 #ifndef HAVE_NO_KRB5_524
702 status = krb5_524_conv_principal (context, v5cred->client,
708 afs_com_err(progname, status,
709 "while converting principal to Kerberos V4 format");
711 strcpy (username, k4name);
713 strcat (username, ".");
714 strcat (username, k4inst);
718 len = min(get_princ_len(context, v5cred->client, 0),
719 second_comp(context, v5cred->client) ?
720 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
721 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
722 username[len] = '\0';
724 if (second_comp(context, v5cred->client)) {
725 strcat(username, ".");
726 p = username + strlen(username);
727 len = min(get_princ_len(context, v5cred->client, 1),
728 MAXKTCNAMELEN - strlen(username) - 1);
729 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
734 memset(&token, 0, sizeof(struct ktc_token));
736 token.kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
737 token.startTime = v5cred->times.starttime;;
738 token.endTime = v5cred->times.endtime;
739 if (tkt_DeriveDesKey(get_creds_enctype(v5cred), inkey, inkey_sz,
740 &token.sessionKey) != 0) {
743 token.ticketLen = v5cred->ticket.length;
744 memcpy(token.ticket, v5cred->ticket.data, token.ticketLen);
746 status = token_importRxkadViceId(tokenPtr, &token, 0);
751 if (username[0] != '\0')
752 *userPtr = strdup(username);
758 * Convert a Keberos ticket to an rxkad token, using information obtained
759 * from an external Kerberos 5->4 conversion service. If the code is built
760 * with HAVE_NO_KRB5_524 then this is a stub function which will always
761 * return success without a token.
764 * An initialised Kerberos 5 context
766 * A Kerberos credentials structure containing a suitable service ticket
767 * @param[out] tokenPtr
768 * An AFS token structure containing an rxkad token. This is a malloc'd
769 * structure which should be freed by the caller.
770 * @param[out[ userPtr
771 * A string containing the principal of the user to whom the token was
772 * issued. This is a malloc'd block which should be freed by the caller,
776 * 0 on success, an error value upon failure
779 #ifdef HAVE_NO_KRB5_524
781 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
782 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
790 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
791 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
793 char username[BUFSIZ];
794 struct ktc_token token;
800 afs_dprintf("Using Kerberos 524 translator service\n");
802 status = krb5_524_convert_creds(context, v5cred, &cred);
805 afs_com_err(progname, status, "while converting tickets "
806 "to Kerberos V4 format");
807 return AKLOG_KERBEROS;
810 strcpy (username, cred.pname);
812 strcat (username, ".");
813 strcat (username, cred.pinst);
816 memset(&token, 0, sizeof(struct ktc_token));
818 token.kvno = cred.kvno;
819 token.startTime = cred.issue_date;
821 * It seems silly to go through a bunch of contortions to
822 * extract the expiration time, when the v5 credentials already
823 * has the exact time! Let's use that instead.
825 * Note that this isn't a security hole, as the expiration time
826 * is also contained in the encrypted token
828 token.endTime = v5cred->times.endtime;
829 memcpy(&token.sessionKey, cred.session, 8);
830 token.ticketLen = cred.ticket_st.length;
831 memcpy(token.ticket, cred.ticket_st.dat, token.ticketLen);
833 status = token_importRxkadViceId(tokenPtr, &token, 0);
838 *userPtr = strdup(username);
845 * This function gets an rxkad token for a given cell.
848 * An initialized Kerberos v5 context
850 * The cell information for the cell which we're obtaining a token for
852 * The realm to look in for the service principal. If NULL, then the
853 * realm is determined from the cell name or the user's credentials
854 * (see the documentation for rxkad_get_ticket)
856 * The rxkad token produced. This is a malloc'd structure which should
857 * be freed by the caller.
858 * @parma[out] authuser
859 * A string containing the principal of the user to whom the token was
860 * issued. This is a malloc'd block which should be freed by the caller,
862 * @param[out] foreign
863 * Whether the user is considered as 'foreign' to the realm of the cell.
866 * 0 on success, an error value upon failuer
869 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
870 struct ktc_tokenUnion **token, char **authuser, int *foreign) {
871 krb5_creds *v5cred = NULL;
872 char *realmUsed = NULL;
873 char *username = NULL;
880 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
885 status = rxkad_get_converted_token(context, v5cred, token, &username);
887 status = rxkad_build_native_token(context, v5cred, token, &username);
892 /* We now have the username, plus the realm name, so stitch them together
893 * to give us the name that the ptserver will know the user by */
894 if (realmUsed == NULL || username == NULL) {
895 *authuser = username;
899 if (asprintf(authuser, "%s@%s", username, realmUsed) < 0) {
900 fprintf(stderr, "%s: Out of memory building PTS name\n", progname);
914 krb5_free_creds(context, v5cred);
920 * Log to a cell. If the cell has already been logged to, return without
921 * doing anything. Otherwise, log to it and mark that it has been logged
925 auth_to_cell(krb5_context context, const char *config,
926 char *cell, char *realm, char **linkedcell)
928 int status = AKLOG_SUCCESS;
930 char *username = NULL; /* To hold client username structure */
931 afs_int32 viceId; /* AFS uid of user */
933 char *local_cell = NULL;
934 struct ktc_tokenUnion *rxkadToken = NULL;
935 struct ktc_setTokenData *token;
936 struct ktc_setTokenData *btoken = NULL;
937 struct afsconf_cell cellconf;
939 /* NULL or empty cell returns information on local cell */
940 if ((status = get_cellconfig(config, cell, &cellconf, &local_cell)))
943 if (linkedcell != NULL) {
944 if (cellconf.linkedCell != NULL) {
945 *linkedcell = strdup(cellconf.linkedCell);
946 if (*linkedcell == NULL) {
955 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
956 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
957 status = AKLOG_SUCCESS;
962 * Record that we have attempted to log to this cell. We do this
963 * before we try rather than after so that we will not try
964 * and fail repeatedly for one cell.
966 ll_string(&authedcells, ll_s_add, cellconf.name);
969 * Record this cell in the list of zephyr subscriptions. We may
970 * want zephyr subscriptions even if authentication fails.
971 * If this is done after we attempt to get tokens, aklog -zsubs
972 * can return something different depending on whether or not we
973 * are in -noauth mode.
975 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
977 "%s: failure adding cell %s to zephyr subscriptions list.\n",
978 progname, cellconf.name);
981 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
983 "%s: failure adding cell %s to zephyr subscriptions list.\n",
984 progname, local_cell);
989 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
990 cellconf.hostName[0]);
992 token = token_buildTokenJar(cellconf.name);
998 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
999 &username, &isForeign);
1003 /* We need to keep the token structure around so that we can stick
1004 * the viceId into it (once we know it) */
1005 status = token_addToken(token, rxkadToken);
1007 afs_dprintf("Add Token failed with %d", status);
1012 ktc_GetTokenEx(cellconf.name, &btoken) == 0 &&
1013 token_SetsEquivalent(token, btoken)) {
1015 token_FreeSet(&btoken);
1016 afs_dprintf("Identical tokens already exist; skipping.\n");
1017 status = AKLOG_SUCCESS;
1022 token_FreeSet(&btoken);
1028 if (username == NULL) {
1029 afs_dprintf("Not resolving name to id\n");
1032 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1035 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1038 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1039 status = pr_SNameToId (username, &viceId);
1042 afs_dprintf("Error %d\n", status);
1044 afs_dprintf("Id %d\n", (int) viceId);
1048 * This code is taken from cklog -- it lets people
1049 * automatically register with the ptserver in foreign cells
1052 #ifdef ALLOW_REGISTER
1053 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1054 afs_dprintf("doing first-time registration of %s at %s\n",
1055 username, cellconf.name);
1058 status = ktc_SetTokenEx(token);
1060 afs_com_err(progname, status,
1061 "while obtaining tokens for cell %s",
1063 status = AKLOG_TOKEN;
1067 * In case you're wondering, we don't need to change the
1068 * filename here because we're still connecting to the
1069 * same cell -- we're just using a different authenticat ion
1073 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1075 printf("Error %d\n", status);
1078 if ((status = pr_CreateUser(username, &viceId))) {
1079 fprintf(stderr, "%s: %s so unable to create remote PTS "
1080 "user %s in cell %s (status: %d).\n", progname,
1081 afs_error_message(status), username, cellconf.name,
1083 viceId = ANONYMOUSID;
1085 printf("created cross-cell entry for %s (Id %d) at %s\n",
1086 username, viceId, cellconf.name);
1089 #endif /* ALLOW_REGISTER */
1091 if ((status == 0) && (viceId != ANONYMOUSID)) {
1092 status = token_setRxkadViceId(rxkadToken, viceId);
1094 fprintf(stderr, "Error %d setting rxkad ViceId\n", status);
1095 status = AKLOG_SUCCESS;
1097 token_replaceToken(token, rxkadToken);
1103 afs_dprintf("Setting tokens. %s @ %s\n",
1104 username, cellconf.name);
1106 afs_dprintf("Setting tokens for cell %s\n", cellconf.name);
1109 #ifndef AFS_AIX51_ENV
1110 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1111 * this routine, it will not add the token. It is not clear what
1112 * is going on here! So we will do the following operation.
1113 * On AIX 5, it causes the parent program to die, so we won't.
1114 * We don't care about the return value, but need to collect it
1115 * to avoid compiler warnings.
1117 if (write(2,"",0) < 0) {
1118 /* dummy write, don't care */
1121 token_setPag(token, afssetpag);
1122 status = ktc_SetTokenEx(token);
1124 afs_com_err(progname, status, "while setting tokens for cell %s",
1126 status = AKLOG_TOKEN;
1130 afs_dprintf("Noauth mode; not authenticating.\n");
1134 token_freeToken(&rxkadToken);
1146 get_afs_mountpoint(char *file, char *mountpoint, int size)
1149 char V ='V'; /* AFS has problem on Sun with pioctl */
1151 char our_file[MAXPATHLEN + 1];
1153 char *last_component;
1154 struct ViceIoctl vio;
1155 char cellname[BUFSIZ];
1157 strlcpy(our_file, file, sizeof(our_file));
1159 if ((last_component = strrchr(our_file, DIR))) {
1160 *last_component++ = 0;
1161 parent_dir = our_file;
1164 last_component = our_file;
1168 memset(cellname, 0, sizeof(cellname));
1170 vio.in = last_component;
1171 vio.in_size = strlen(last_component)+1;
1172 vio.out_size = size;
1173 vio.out = mountpoint;
1175 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1176 if (strchr(mountpoint, VOLMARKER) == NULL) {
1178 vio.in_size = strlen(file) + 1;
1179 vio.out_size = sizeof(cellname);
1182 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1183 strlcat(cellname, VOLMARKERSTRING, sizeof(cellname));
1184 strlcat(cellname, mountpoint + 1, sizeof(cellname));
1185 memset(mountpoint + 1, 0, size - 1);
1186 strcpy(mountpoint + 1, cellname);
1196 * This routine each time it is called returns the next directory
1197 * down a pathname. It resolves all symbolic links. The first time
1198 * it is called, it should be called with the name of the path
1199 * to be descended. After that, it should be called with the arguemnt
1203 next_path(char *origpath)
1205 static char path[MAXPATHLEN + 1];
1206 static char pathtocheck[MAXPATHLEN + 1];
1208 ssize_t link; /* Return value from readlink */
1209 char linkbuf[MAXPATHLEN + 1];
1210 char tmpbuf[MAXPATHLEN + 1];
1212 static char *last_comp; /* last component of directory name */
1213 static char *elast_comp; /* End of last component */
1217 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1219 /* If we are given something for origpath, we are initializing only. */
1221 memset(path, 0, sizeof(path));
1222 memset(pathtocheck, 0, sizeof(pathtocheck));
1223 strlcpy(path, origpath, sizeof(path));
1229 /* We were not given origpath; find then next path to check */
1231 /* If we've gotten all the way through already, return NULL */
1232 if (last_comp == NULL)
1236 while (*last_comp == DIR)
1237 strncat(pathtocheck, last_comp++, 1);
1238 len = (elast_comp = strchr(last_comp, DIR))
1239 ? elast_comp - last_comp : strlen(last_comp);
1240 strncat(pathtocheck, last_comp, len);
1241 memset(linkbuf, 0, sizeof(linkbuf));
1242 link = readlink(pathtocheck, linkbuf, sizeof(linkbuf)-1);
1245 linkbuf[link] = '\0'; /* NUL terminate string */
1247 if (++symlinkcount > MAXSYMLINKS) {
1248 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1249 exit(AKLOG_BADPATH);
1252 memset(tmpbuf, 0, sizeof(tmpbuf));
1254 strlcpy(tmpbuf, elast_comp, sizeof(tmpbuf));
1255 if (linkbuf[0] == DIR) {
1257 * If this is a symbolic link to an absolute path,
1258 * replace what we have by the absolute path.
1260 memset(path, 0, strlen(path));
1261 memcpy(path, linkbuf, sizeof(linkbuf));
1262 strcat(path, tmpbuf);
1265 memset(pathtocheck, 0, sizeof(pathtocheck));
1269 * If this is a symbolic link to a relative path,
1270 * replace only the last component with the link name.
1272 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1273 strcat(path, tmpbuf);
1275 if ((t = strrchr(pathtocheck, DIR))) {
1277 memset(t, 0, strlen(t));
1280 memset(pathtocheck, 0, sizeof(pathtocheck));
1284 last_comp = elast_comp;
1288 return(pathtocheck);
1292 add_hosts(char *file)
1295 char V = 'V'; /* AFS has problem on SunOS */
1297 struct ViceIoctl vio;
1298 char outbuf[BUFSIZ];
1304 memset(outbuf, 0, sizeof(outbuf));
1306 vio.out_size = sizeof(outbuf);
1310 afs_dprintf("Getting list of hosts for %s\n", file);
1312 /* Don't worry about errors. */
1313 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1314 phosts = (long *) outbuf;
1317 * Lists hosts that we care about. If ALLHOSTS is defined,
1318 * then all hosts that you ever may possible go through are
1319 * included in this list. If not, then only hosts that are
1320 * the only ones appear. That is, if a volume you must use
1321 * is replaced on only one server, that server is included.
1322 * If it is replicated on many servers, then none are included.
1323 * This is not perfect, but the result is that people don't
1324 * get subscribed to a lot of instances of FILSRV that they
1325 * probably won't need which reduces the instances of
1326 * people getting messages that don't apply to them.
1329 if (phosts[1] != '\0')
1332 for (i = 0; phosts[i]; i++) {
1334 in.s_addr = phosts[i];
1335 afs_dprintf("Got host %s\n", inet_ntoa(in));
1336 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1338 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1339 afs_dprintf("Got host %s\n", hp->h_name);
1340 ll_string(&zsublist, ll_s_add, hp->h_name);
1347 * This routine descends through a path to a directory, logging to
1348 * every cell it encounters along the way.
1351 auth_to_path(krb5_context context, const char *config, char *path)
1353 int status = AKLOG_SUCCESS;
1354 int auth_status = AKLOG_SUCCESS;
1357 char pathtocheck[MAXPATHLEN + 1];
1358 char mountpoint[MAXPATHLEN + 1];
1367 strlcpy(pathtocheck, path, sizeof(pathtocheck));
1369 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1370 fprintf(stderr, "Unable to find current working directory:\n");
1371 fprintf(stderr, "%s\n", pathtocheck);
1372 fprintf(stderr, "Try an absolute pathname.\n");
1373 exit(AKLOG_BADPATH);
1376 strlcat(pathtocheck, DIRSTRING, sizeof(pathtocheck));
1377 strlcat(pathtocheck, path, sizeof(pathtocheck));
1380 next_path(pathtocheck);
1382 /* Go on to the next level down the path */
1383 while ((nextpath = next_path(NULL))) {
1384 strlcpy(pathtocheck, nextpath, sizeof(pathtocheck));
1385 afs_dprintf("Checking directory %s\n", pathtocheck);
1387 * If this is an afs mountpoint, determine what cell from
1388 * the mountpoint name which is of the form
1389 * #cellname:volumename or %cellname:volumename.
1391 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1392 /* skip over the '#' or '%' */
1393 cell = mountpoint + 1;
1394 /* Add this (cell:volumename) to the list of zsubs */
1396 ll_string(&zsublist, ll_s_add, cell);
1398 add_hosts(pathtocheck);
1399 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1401 auth_status = auth_to_cell(context, config, cell, NULL, NULL);
1403 if (status == AKLOG_SUCCESS)
1404 status = auth_status;
1405 else if (status != auth_status)
1406 status = AKLOG_SOMETHINGSWRONG;
1411 if (isdir(pathtocheck, &isdirectory) < 0) {
1413 * If we've logged and still can't stat, there's
1416 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1417 pathtocheck, strerror(errno));
1418 return(AKLOG_BADPATH);
1420 else if (! isdirectory) {
1421 /* Allow only directories */
1422 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1424 return(AKLOG_BADPATH);
1434 /* Print usage message and exit */
1438 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1439 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1440 "[[-p | -path] pathname]\n",
1441 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1442 " [-linked] [-insecure_des]"
1443 #ifndef HAVE_NO_KRB5_524
1447 fprintf(stderr, " -d gives debugging information.\n");
1448 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1449 fprintf(stderr, " pathname is the name of a directory to which ");
1450 fprintf(stderr, "you wish to authenticate.\n");
1451 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1452 fprintf(stderr, " -hosts gives host address information.\n");
1453 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1454 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1455 fprintf(stderr, " -force means replace identical tickets. \n");
1456 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1457 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1458 #ifndef HAVE_NO_KRB5_524
1459 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1461 fprintf(stderr, " -insecure_des enables insecure single-DES for krb5.\n");
1462 fprintf(stderr, " No commandline arguments means ");
1463 fprintf(stderr, "authenticate to the local cell.\n");
1464 fprintf(stderr, "\n");
1469 main(int argc, char *argv[])
1471 krb5_context context;
1472 int status = AKLOG_SUCCESS;
1474 int somethingswrong = FALSE;
1475 int insecure_des = 0;
1477 cellinfo_t cellinfo;
1479 extern char *progname; /* Name of this program */
1481 int cmode = FALSE; /* Cellname mode */
1482 int pmode = FALSE; /* Path name mode */
1484 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1485 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1486 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1488 linked_list cells; /* List of cells to log to */
1489 linked_list paths; /* List of paths to log to */
1492 const char *config = AFSDIR_CLIENT_ETC_DIRPATH;
1494 memset(&cellinfo, 0, sizeof(cellinfo));
1496 memset(realm, 0, sizeof(realm));
1497 memset(cell, 0, sizeof(cell));
1498 memset(path, 0, sizeof(path));
1506 /* Store the program name here for error messages */
1507 if ((progname = strrchr(argv[0], DIR)))
1512 #if defined(KRB5_PROG_ETYPE_NOSUPP) && !(defined(HAVE_KRB5_ENCTYPE_ENABLE) || defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO))
1514 char *filepath = NULL, *newpath = NULL;
1515 #ifndef AFS_DARWIN_ENV
1516 char *defaultpath = "/etc/krb5.conf:/etc/krb5/krb5.conf";
1518 char *defaultpath = "~/Library/Preferences/edu.mit.Kerberos:/Library/Preferences/edu.mit.Kerberos";
1520 filepath = getenv("KRB5_CONFIG");
1522 /* only fiddle with KRB5_CONFIG if krb5-weak.conf actually exists */
1523 if (asprintf(&newpath, "%s/krb5-weak.conf",
1524 AFSDIR_CLIENT_ETC_DIRPATH) < 0)
1526 if (newpath != NULL && access(newpath, R_OK) == 0) {
1529 if (asprintf(&newpath, "%s:%s/krb5-weak.conf",
1530 filepath ? filepath : defaultpath,
1531 AFSDIR_CLIENT_ETC_DIRPATH) < 0)
1534 setenv("KRB5_CONFIG", newpath, 1);
1537 krb5_init_context(&context);
1539 #if defined(KRB5_PROG_ETYPE_NOSUPP) && !(defined(HAVE_KRB5_ENCTYPE_ENABLE) || defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO))
1543 setenv("KRB5_CONFIG", filepath, 1);
1545 unsetenv("KRB5_CONFIG");
1548 initialize_KTC_error_table ();
1549 initialize_U_error_table();
1550 initialize_RXK_error_table();
1551 initialize_ACFG_error_table();
1552 initialize_PT_error_table();
1553 afs_set_com_err_hook(redirect_errors);
1555 /* Initialize list of cells to which we have authenticated */
1556 ll_init(&authedcells);
1558 /* Parse commandline arguments and make list of what to do. */
1559 for (i = 1; i < argc; i++) {
1560 if (strcmp(argv[i], "-d") == 0)
1562 else if (strcmp(argv[i], "-noauth") == 0)
1564 else if (strcmp(argv[i], "-zsubs") == 0)
1566 else if (strcmp(argv[i], "-hosts") == 0)
1568 else if (strcmp(argv[i], "-noprdb") == 0)
1570 else if (strcmp(argv[i], "-linked") == 0)
1572 else if (strcmp(argv[i], "-force") == 0)
1574 #ifndef HAVE_NO_KRB5_524
1575 else if (strcmp(argv[i], "-524") == 0)
1578 else if (strcmp(argv[i], "-setpag") == 0)
1580 else if (((strcmp(argv[i], "-cell") == 0) ||
1581 (strcmp(argv[i], "-c") == 0)) && !pmode)
1584 strlcpy(cell, argv[i], sizeof(cell));
1588 else if ((strcmp(argv[i], "-keytab") == 0))
1594 else if ((strcmp(argv[i], "-token-lifetime") == 0))
1596 status = util_GetInt32(argv[i], &akimp_lifetime);
1599 "%s: invalid value specified for token-lifetime.\n",
1604 if (akimp_lifetime < 0 || akimp_lifetime > AKIMP_LIFETIME_MAX) {
1606 "%s: token-lifetime must be within 0 and %d hrs.\n",
1607 progname, AKIMP_LIFETIME_MAX);
1611 akimp_lifetime = akimp_lifetime * 60 * 60;
1612 akimplifetime_present = TRUE;
1616 else if ((strcmp(argv[i], "-principal") == 0))
1622 else if (((strcmp(argv[i], "-path") == 0) ||
1623 (strcmp(argv[i], "-p") == 0)) && !cmode)
1626 strlcpy(path, argv[i], sizeof(path));
1630 else if (strcmp(argv[i], "-config") == 0)
1636 else if (strcmp(argv[i], "-insecure_des") == 0)
1638 else if (argv[i][0] == '-')
1640 else if (!pmode && !cmode) {
1641 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1642 (strcmp(argv[i], "..") == 0)) {
1644 strlcpy(path, argv[i], sizeof(path));
1648 strlcpy(cell, argv[i], sizeof(cell));
1655 * Enable DES enctypes if requested. This is not required when rxkad-k5
1656 * is used, but some sites may not have updated.
1657 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1661 #if defined(HAVE_KRB5_ENCTYPE_ENABLE)
1662 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1664 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1665 #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1666 krb5_allow_weak_crypto(context, 1);
1669 "%s: -insecure_des is not supported by this libkrb5\n", progname);
1675 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1678 strlcpy(realm, argv[i], sizeof(realm));
1682 /* Add this cell to list of cells */
1683 strcpy(cellinfo.cell, cell);
1684 strcpy(cellinfo.realm, realm);
1685 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1687 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1688 ll_add_data(cur_node, new_cellinfo);
1691 "%s: failure copying cellinfo.\n", progname);
1696 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1700 memset(&cellinfo, 0, sizeof(cellinfo));
1702 memset(cell, 0, sizeof(cell));
1703 memset(realm, 0, sizeof(realm));
1706 /* Add this path to list of paths */
1707 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1709 if ((new_path = strdup(path)))
1710 ll_add_data(cur_node, new_path);
1712 fprintf(stderr, "%s: failure copying path name.\n",
1718 fprintf(stderr, "%s: failure adding path to paths list.\n",
1723 memset(path, 0, sizeof(path));
1727 if (akimplifetime_present && !keytab) {
1729 "%s: -token-lifetime is valid only if -keytab is specified.\n",
1734 /* If nothing was given, log to the local cell. */
1735 if ((cells.nelements + paths.nelements) == 0) {
1738 status = auth_to_cell(context, config, NULL, NULL, &linkedcell);
1740 /* If this cell is linked to a DCE cell, and user requested -linked,
1741 * get tokens for both. This is very useful when the AFS cell is
1742 * linked to a DFS cell and this system does not also have DFS.
1745 if (!status && linked && linkedcell != NULL) {
1746 afs_dprintf("Linked cell: %s\n", linkedcell);
1747 status = auth_to_cell(context, config, linkedcell, NULL, NULL);
1755 * Local hack - if the person has a file in their home
1756 * directory called ".xlog", read that for a list of
1757 * extra cells to authenticate to
1760 if ((pwd = getpwuid(getuid())) != NULL) {
1763 char fcell[100], xlog_path[512];
1765 strlcpy(xlog_path, pwd->pw_dir, sizeof(xlog_path));
1766 strlcat(xlog_path, "/.xlog", sizeof(xlog_path));
1768 if ((stat(xlog_path, &sbuf) == 0) &&
1769 ((f = fopen(xlog_path, "r")) != NULL)) {
1771 afs_dprintf("Reading %s for cells to authenticate to.\n",
1774 while (fgets(fcell, 100, f) != NULL) {
1777 fcell[strlen(fcell) - 1] = '\0';
1779 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1781 auth_status = auth_to_cell(context, config, fcell, NULL, NULL);
1782 if (status == AKLOG_SUCCESS)
1783 status = auth_status;
1785 status = AKLOG_SOMETHINGSWRONG;
1791 /* Log to all cells in the cells list first */
1792 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1793 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1794 status = auth_to_cell(context, config, cellinfo.cell,
1795 cellinfo.realm, &linkedcell);
1799 if (linked && linkedcell != NULL) {
1800 afs_dprintf("Linked cell: %s\n", linkedcell);
1801 status = auth_to_cell(context, config, linkedcell,
1802 cellinfo.realm, NULL);
1806 if (linkedcell != NULL) {
1813 /* Then, log to all paths in the paths list */
1814 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1815 status = auth_to_path(context, config, cur_node->data);
1821 * If only one thing was logged to, we'll return the status
1822 * of the single call. Otherwise, we'll return a generic
1823 * something failed status.
1825 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1826 status = AKLOG_SOMETHINGSWRONG;
1829 /* If we are keeping track of zephyr subscriptions, print them. */
1831 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1832 printf("zsub: %s\n", cur_node->data);
1835 /* If we are keeping track of host information, print it. */
1837 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1838 printf("host: %s\n", cur_node->data);
1845 isdir(char *path, unsigned char *val)
1847 struct stat statbuf;
1849 if (lstat(path, &statbuf) < 0)
1852 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1860 static krb5_error_code
1861 get_credv5_akimpersonate(krb5_context context,
1863 krb5_principal service_principal,
1864 krb5_principal client_principal,
1868 krb5_creds** out_creds /* out */ )
1870 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1871 krb5_error_code code;
1873 krb5_keytab_entry entry[1];
1875 krb5_creds *creds = 0;
1876 krb5_enctype enctype;
1878 krb5_keyblock session_key[1];
1880 Ticket ticket_reply[1];
1881 EncTicketPart enc_tkt_reply[1];
1882 krb5_address address[30];
1883 krb5_addresses faddr[1];
1884 unsigned int temp_vno[1];
1885 time_t temp_time[2];
1887 krb5_ticket ticket_reply[1];
1888 krb5_enc_tkt_part enc_tkt_reply[1];
1889 krb5_address address[30], *faddr[30];
1894 if (!(creds = malloc(sizeof *creds))) {
1900 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1901 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1902 memset((char*)creds, 0, sizeof *creds);
1903 memset((char*)entry, 0, sizeof *entry);
1904 memset((char*)session_key, 0, sizeof *session_key);
1905 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1906 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1907 code = krb5_kt_resolve(context, keytab, &kt);
1910 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1912 afs_com_err(progname, code, "while resolving default keytab");
1916 code = krb5_kt_get_entry(context,
1923 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1925 afs_com_err(progname, code, "while scanning keytab entries");
1932 if ((code = krb5_generate_random_keyblock(context,
1933 deref_keyblock_enctype(session_key), session_key))) {
1934 afs_com_err(progname, code, "while making session key");
1937 enc_tkt_reply->flags.initial = 1;
1938 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1939 enc_tkt_reply->cname = client_principal->name;
1940 enc_tkt_reply->crealm = client_principal->realm;
1941 enc_tkt_reply->key = *session_key;
1943 static krb5_data empty_string;
1944 enc_tkt_reply->transited.contents = empty_string;
1946 enc_tkt_reply->authtime = starttime;
1947 enc_tkt_reply->starttime = temp_time;
1948 *enc_tkt_reply->starttime = starttime;
1949 enc_tkt_reply->endtime = endtime;
1951 if ((code = krb5_c_make_random_key(context,
1952 deref_keyblock_enctype(session_key), session_key))) {
1953 afs_com_err(progname, code, "while making session key");
1956 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1957 #define DATACAST (unsigned char *)
1958 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1959 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1960 enc_tkt_reply->session = session_key;
1961 enc_tkt_reply->client = client_principal;
1963 static krb5_data empty_string;
1964 enc_tkt_reply->transited.tr_contents = empty_string;
1966 enc_tkt_reply->times.authtime = starttime;
1967 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1968 enc_tkt_reply->times.endtime = endtime;
1969 #endif /* USING_HEIMDAL */
1970 /* NB: We will discard address for now--ignoring caddr field
1971 in any case. MIT branch does what it always did. */
1973 if (paddress && *paddress) {
1974 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1977 faddr->val = address;
1979 for (i = 0; paddress[i]; ++i) {
1981 address[i].addr_type = KRB5_ADDRESS_INET;
1982 address[i].address.data = (void*)(paddress+i);
1983 address[i].address.length = sizeof(paddress[i]);
1986 address[i].magic = KV5M_ADDRESS;
1987 address[i].addrtype = ADDRTYPE_INET;
1989 address[i].addrtype = AF_INET;
1991 address[i].contents = (void*)(paddress+i);
1992 address[i].length = sizeof(int);
1993 faddr[i] = address+i;
2004 ticket_reply->sname = service_principal->name;
2005 ticket_reply->realm = service_principal->realm;
2007 { /* crypto block */
2008 krb5_crypto crypto = 0;
2009 unsigned char *buf = 0;
2010 size_t buf_size, buf_len;
2013 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
2014 enc_tkt_reply, &buf_len, code);
2016 afs_com_err(progname, code, "while encoding ticket");
2020 if(buf_len != buf_size) {
2021 afs_com_err(progname, code,
2022 "%u != %u while encoding ticket (internal ASN.1 encoder error",
2023 (unsigned int)buf_len, (unsigned int)buf_size);
2026 what = "krb5_crypto_init";
2027 code = krb5_crypto_init(context,
2028 &deref_entry_keyblock(entry),
2029 deref_entry_enctype(entry),
2032 what = "krb5_encrypt";
2033 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
2034 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
2037 if (crypto) krb5_crypto_destroy(context, crypto);
2039 afs_com_err(progname, code, "while %s", what);
2042 } /* crypto block */
2043 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
2044 ticket_reply->enc_part.kvno = (void *)temp_vno;
2045 *ticket_reply->enc_part.kvno = entry->vno;
2046 ticket_reply->tkt_vno = 5;
2048 ticket_reply->server = service_principal;
2049 ticket_reply->enc_part2 = enc_tkt_reply;
2050 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
2051 afs_com_err(progname, code, "while making ticket");
2054 ticket_reply->enc_part.kvno = entry->vno;
2057 /* Construct Creds */
2059 if ((code = krb5_copy_principal(context, service_principal,
2061 afs_com_err(progname, code, "while copying service principal");
2064 if ((code = krb5_copy_principal(context, client_principal,
2066 afs_com_err(progname, code, "while copying client principal");
2069 if ((code = krb5_copy_keyblock_contents(context, session_key,
2070 &deref_session_key(creds)))) {
2071 afs_com_err(progname, code, "while copying session key");
2076 creds->times.authtime = enc_tkt_reply->authtime;
2077 creds->times.starttime = *(enc_tkt_reply->starttime);
2078 creds->times.endtime = enc_tkt_reply->endtime;
2079 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2080 creds->flags.b = enc_tkt_reply->flags;
2082 creds->times = enc_tkt_reply->times;
2083 creds->ticket_flags = enc_tkt_reply->flags;
2085 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2087 else if ((code = krb5_copy_addresses(context,
2088 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2089 afs_com_err(progname, code, "while copying addresses");
2095 size_t creds_tkt_len;
2096 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2097 ticket_reply, &creds_tkt_len, code);
2099 afs_com_err(progname, code, "while encoding ticket");
2104 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2105 afs_com_err(progname, code, "while encoding ticket");
2108 creds->ticket = *temp;
2115 if (deref_enc_data(&ticket_reply->enc_part))
2116 free(deref_enc_data(&ticket_reply->enc_part));
2117 krb5_free_keytab_entry_contents(context, entry);
2119 krb5_cc_close(context, cc);
2121 krb5_kt_close(context, kt);
2122 if (creds) krb5_free_creds(context, creds);
2123 krb5_free_keyblock_contents(context, session_key);
2131 static krb5_error_code
2132 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2138 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2139 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2141 memset(&increds, 0, sizeof(increds));
2142 /* ANL - instance may be ptr to a null string. Pass null then */
2143 if ((r = krb5_build_principal(context, &increds.server,
2144 strlen(realm), realm,
2146 (inst && strlen(inst)) ? inst : NULL,
2152 if (!_krb425_ccache) {
2153 r = krb5_cc_default(context, &_krb425_ccache);
2159 r = krb5_parse_name(context, client, &increds.client);
2161 r = krb5_cc_get_principal(context, _krb425_ccache, &increds.client);
2167 increds.times.endtime = 0;
2169 /* Ask for DES since that is what V4 understands */
2170 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2173 afs_int32 start, end;
2176 if (akimp_lifetime == 0) {
2177 end = MAX_AFS_INT32;
2179 end = start + akimp_lifetime;
2182 r = get_credv5_akimpersonate(context,
2190 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2195 if (increds.server) {
2196 krb5_free_principal(context, increds.server);
2199 if (increds.client) {
2200 krb5_free_principal(context, increds.client);
2207 get_user_realm(krb5_context context, char **realm)
2209 static krb5_principal client_principal = 0;
2210 krb5_error_code r = 0;
2214 if (!_krb425_ccache) {
2215 r = krb5_cc_default(context, &_krb425_ccache);
2219 if (!client_principal) {
2221 r = krb5_parse_name(context, client, &client_principal);
2223 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2229 *realm = extract_realm(context, client_principal);