4 * Copyright 1990,1991 by the Massachusetts Institute of Technology
5 * For distribution and copying rights, see the file "mit-copyright.h"
8 * Copyright (c) 2005, 2006
9 * The Linux Box Corporation
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23 * This software is provided as is, without representation
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33 * if it has been or is hereafter advised of the possibility of
37 #include <afsconfig.h>
42 #include <sys/types.h>
57 #include <sys/param.h>
58 #include <sys/errno.h>
60 #include <sys/socket.h>
61 #include <netinet/in.h>
62 #include <arpa/inet.h>
67 #if defined(HAVE_ET_COM_ERR_H)
68 #include <et/com_err.h>
73 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
74 #include <afs/com_err.h>
77 #include <afs/param.h>
79 #include <sys/ioccom.h>
82 /* Prevent inclusion of des.h to avoid conflicts with des types */
83 #define NO_DES_H_INCLUDE
86 #include <afs/cellconfig.h>
88 #include <afs/venus.h>
89 #include <afs/ptserver.h>
90 #include <afs/ptuser.h>
91 #include <afs/dirpath.h>
92 #include <afs/afsutil.h>
95 #include "linked_list.h"
97 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
100 #ifdef HAVE_KRB5_CREDS_SESSION
101 #define USING_HEIMDAL 1
107 #ifndef AFS_TRY_FULL_PRINC
108 #define AFS_TRY_FULL_PRINC 1
109 #endif /* AFS_TRY_FULL_PRINC */
111 #define AKLOG_TRYAGAIN -1
112 #define AKLOG_SUCCESS 0
113 #define AKLOG_USAGE 1
114 #define AKLOG_SOMETHINGSWRONG 2
116 #define AKLOG_KERBEROS 4
117 #define AKLOG_TOKEN 5
118 #define AKLOG_BADPATH 6
134 /* RedHat 4.x doesn't seem to define this */
135 #define MAXSYMLINKS 5
138 #define DIR '/' /* Character that divides directories */
139 #define DIRSTRING "/" /* String form of above */
140 #define VOLMARKER ':' /* Character separating cellname from mntpt */
141 #define VOLMARKERSTRING ":" /* String form of above */
145 char realm[REALM_SZ];
148 static krb5_ccache _krb425_ccache = NULL;
151 * Why doesn't AFS provide these prototypes?
154 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
160 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
161 static int isdir(char *, unsigned char *);
162 static krb5_error_code get_credv5(krb5_context context, char *, char *,
163 char *, krb5_creds **);
164 static int get_user_realm(krb5_context, char **);
166 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
167 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
168 x == KRB5KRB_ERR_GENERIC)
170 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
172 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
173 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
174 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
175 #define realm_data(c, p) krb5_princ_realm(c, p)->data
176 #define realm_len(c, p) krb5_princ_realm(c, p)->length
178 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
180 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
181 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
182 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
183 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
184 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
187 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
190 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
191 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
195 krb5_encrypt_tkt_part(krb5_context context,
196 const krb5_keyblock *key,
203 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
205 if ((code = krb5_c_encrypt_length(context, key->enctype,
206 data->length, &enclen)))
208 ticket->enc_part.ciphertext.length = enclen;
209 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
213 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
214 0, data, &ticket->enc_part))) {
215 free(ticket->enc_part.ciphertext.data);
216 ticket->enc_part.ciphertext.data = 0;
228 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
230 #define get_cred_keydata(c) c->keyblock.contents
231 #define get_cred_keylen(c) c->keyblock.length
232 #define get_creds_enctype(c) c->keyblock.enctype
234 #elif defined(HAVE_KRB5_CREDS_SESSION)
236 #define get_cred_keydata(c) c->session.keyvalue.data
237 #define get_cred_keylen(c) c->session.keyvalue.length
238 #define get_creds_enctype(c) c->session.keytype
241 #error "Must have either keyblock or session member of krb5_creds"
244 #if !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
245 #define krb5_524_convert_creds krb524_convert_creds_kdc
246 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC)
247 #define HAVE_NO_KRB5_524
251 #define deref_keyblock_enctype(kb) \
254 #define deref_entry_keyblock(entry) \
257 #define deref_session_key(creds) \
260 #define deref_enc_tkt_addrs(tkt) \
263 #define deref_enc_length(enc) \
264 ((enc)->cipher.length)
266 #define deref_enc_data(enc) \
269 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
272 #define deref_keyblock_enctype(kb) \
275 #define deref_entry_keyblock(entry) \
278 #define deref_session_key(creds) \
281 #define deref_enc_tkt_addrs(tkt) \
284 #define deref_enc_length(enc) \
285 ((enc)->ciphertext.length)
287 #define deref_enc_data(enc) \
288 ((enc)->ciphertext.data)
292 #define deref_entry_enctype(entry) \
293 deref_keyblock_enctype(&deref_entry_keyblock(entry))
296 * Provide a replacement for strerror if we don't have it
299 #ifndef HAVE_STRERROR
300 extern char *sys_errlist[];
301 #define strerror(x) sys_errlist[x]
302 #endif /* HAVE_STRERROR */
304 static char *progname = NULL; /* Name of this program */
305 static int dflag = FALSE; /* Give debugging information */
306 static int noauth = FALSE; /* If true, don't try to get tokens */
307 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
308 static int hosts = FALSE; /* Are we keeping track of hosts? */
309 static int noprdb = FALSE; /* Skip resolving name to id? */
310 static int linked = FALSE; /* try for both AFS nodes */
311 static int afssetpag = FALSE; /* setpag for AFS */
312 static int force = FALSE; /* Bash identical tokens? */
313 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
314 static char *keytab = NULL; /* keytab for akimpersonate */
315 static char *client = NULL; /* client principal for akimpersonate */
316 static linked_list zsublist; /* List of zephyr subscriptions */
317 static linked_list hostlist; /* List of host addresses */
318 static linked_list authedcells; /* List of cells already logged to */
320 /* A com_error bodge. The idea here is that this routine lets us lookup
321 * things in the system com_err, if the AFS one just tells us the error
326 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
333 const char *str = afs_error_message(code);
334 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
335 #ifdef HAVE_KRB5_SVC_GET_MSG
336 krb5_svc_get_msg(code,&str);
338 str = error_message(code);
343 #ifdef HAVE_KRB5_SVC_GET_MSG
344 krb5_free_string(str);
348 vfprintf(stderr, fmt, ap);
355 afs_dprintf(char *fmt, ...) {
365 copy_cellinfo(cellinfo_t *cellinfo)
367 cellinfo_t *new_cellinfo;
369 if ((new_cellinfo = (cellinfo_t *)malloc(sizeof(cellinfo_t))))
370 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
372 return ((char *)new_cellinfo);
377 get_cellconfig(char *cell, struct afsconf_cell *cellconfig, char **local_cell)
379 int status = AKLOG_SUCCESS;
380 struct afsconf_dir *configdir;
382 memset(cellconfig, 0, sizeof(*cellconfig));
384 *local_cell = malloc(MAXCELLCHARS);
385 if (*local_cell == NULL) {
386 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
391 if (!(configdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH))) {
393 "%s: can't get afs configuration (afsconf_Open(%s))\n",
394 progname, AFSDIR_CLIENT_ETC_DIRPATH);
398 if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
399 fprintf(stderr, "%s: can't determine local cell.\n", progname);
403 if ((cell == NULL) || (cell[0] == 0))
406 /* XXX - This function modifies 'cell' by passing it through lcstring */
407 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
408 fprintf(stderr, "%s: Can't get information about cell %s.\n",
413 afsconf_Close(configdir);
419 extract_realm(krb5_context context, krb5_principal princ) {
423 len = realm_len(context, princ);
424 if (len > REALM_SZ-1)
427 realm = malloc(sizeof(char) * (len+1));
431 strncpy(realm, realm_data(context, princ), len);
438 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
439 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
440 krb5_error_code code;
445 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
449 *realm = extract_realm(context, ticket->server);
453 krb5_free_ticket(context, ticket);
463 * Get a Kerberos service ticket to use as the base of an rxkad token for
467 * An initialized Kerberos v5 context
469 * The realm to look in for the service principal. If NULL, then the
470 * realm is determined from the cell name or the user's credentials
471 * (see below for the heuristics used)
473 * The cell information for the cell to obtain a ticket for
475 * A Kerberos credentials structure containing the ticket acquired
476 * for the cell. This is a dynamically allocated structure, which
477 * should be freed by using the appropriate Kerberos API function.
478 * @param[out] realmUsed
479 * The realm in which the cell's service principal was located. If
480 * unset, then the principal was located in the same realm as the
481 * current user. This is a malloc'd string which should be freed
485 * 0 on success, an error value upon failure
488 * This code tries principals in the following, much debated,
491 * If the realm is specified on the command line we do
492 * - afs/cell@COMMAND-LINE-REALM
493 * - afs@COMMAND-LINE-REALM
496 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
497 * - afs/cell@krb5_get_host_realm(db-server)
498 * Then, if krb5_get_host_realm(db-server) is non-empty
499 * - afs@ krb5_get_host_realm(db-server)
501 * - afs/cell@ upper-case-domain-of-db-server
502 * - afs@ upper-case-domain-of-db-server
504 * In all cases, the 'afs@' variant is only tried where the
505 * cell and the realm match case-insensitively.
509 rxkad_get_ticket(krb5_context context, char *realm,
510 struct afsconf_cell *cell,
511 krb5_creds **v5cred, char **realmUsed) {
512 char *realm_of_cell = NULL;
513 char *realm_of_user = NULL;
514 char *realm_from_princ = NULL;
520 if ((status = get_user_realm(context, &realm_of_user))) {
521 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
522 afs_com_err(progname, status, " while getting realm");
523 status = AKLOG_KERBEROS;
530 /* Cell on command line - use that one */
531 if (realm && realm[0]) {
532 realm_of_cell = realm;
533 status = AKLOG_TRYAGAIN;
534 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
536 /* Initially, try using afs/cell@USERREALM */
537 afs_dprintf("Trying to authenticate to user's realm %s.\n",
539 realm_of_cell = realm_of_user;
540 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
543 /* If that failed, try to determine the realm from the name of
544 * one of the DB servers */
545 if (TRYAGAIN(status)) {
546 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
547 if (!realm_of_cell) {
548 fprintf(stderr, "%s: Couldn't figure out realm for cell "
549 "%s.\n", progname, cell->name);
553 if (realm_of_cell[0])
554 afs_dprintf("We've deduced that we need to authenticate"
555 " to realm %s.\n", realm_of_cell);
557 afs_dprintf("We've deduced that we need to authenticate "
558 "using referrals.\n");
562 if (TRYAGAIN(status)) {
563 /* If we've got the full-princ-first option, or we're in a
564 * different realm from the cell - use the cell name as the
566 if (AFS_TRY_FULL_PRINC ||
567 strcasecmp(cell->name, realm_of_cell)!=0) {
568 status = get_credv5(context, AFSKEY, cell->name,
569 realm_of_cell, v5cred);
571 /* If we failed & we've got an empty realm, then try
572 * calling afs_realm_for_cell again. */
573 if (TRYAGAIN(status) && !realm_of_cell[0]) {
574 /* This time, get the realm by taking the domain
575 * component of the db server and make it upper case */
576 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
577 if (!realm_of_cell) {
579 "%s: Couldn't figure out realm for cell %s.\n",
580 progname, cell->name);
583 afs_dprintf("We've deduced that we need to authenticate"
584 " to realm %s.\n", realm_of_cell);
586 status = get_credv5(context, AFSKEY, cell->name,
587 realm_of_cell, v5cred);
590 /* If the realm and cell name match, then try without an
591 * instance, but only if realm is non-empty */
593 if (TRYAGAIN(status) &&
594 strcasecmp(cell->name, realm_of_cell) == 0) {
595 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
597 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
598 status = get_credv5(context, AFSKEY, cell->name,
599 realm_of_cell, v5cred);
604 /* Try to find a service principal for this cell.
605 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
606 * the first attempt, so we try twice to be sure */
608 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
615 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
616 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
617 progname, cell->name);
618 afs_com_err(progname, status, "while getting AFS tickets");
619 status = AKLOG_KERBEROS;
623 /* If we've got a valid ticket, and we still don't know the realm name
624 * try to figure it out from the contents of the ticket
626 if (strcmp(realm_of_cell, "") == 0) {
627 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
630 "%s: Couldn't decode ticket to determine realm for "
632 progname, cell->name);
634 if (realm_from_princ)
635 realm_of_cell = realm_from_princ;
639 /* If the realm of the user and cell differ, then we need to use the
640 * realm when we later construct the user's principal */
641 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
642 *realmUsed = realm_of_user;
645 if (realm_from_princ)
646 free(realm_from_princ);
647 if (realm_of_user && *realmUsed == NULL)
654 * Build an rxkad token from a Kerberos ticket, using only local tools (that
655 * is, without using a 524 conversion service)
658 * An initialised Kerberos 5 context
660 * A Kerberos credentials structure containing a suitable service ticket
661 * @param[out] tokenPtr
662 * An AFS token structure containing an rxkad token. This is a malloc'd
663 * structure which should be freed by the caller.
664 * @param[out[ userPtr
665 * A string containing the principal of the user to whom the token was
666 * issued. This is a malloc'd block which should be freed by the caller.
669 * 0 on success, an error value upon failure
672 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
673 struct ktc_token **tokenPtr, char **userPtr) {
674 char k4name[ANAME_SZ];
675 char k4inst[INST_SZ];
676 char k4realm[REALM_SZ];
677 char username[BUFSIZ];
678 struct ktc_token *token;
680 #ifdef HAVE_NO_KRB5_524
685 afs_dprintf("Using Kerberos V5 ticket natively\n");
690 #ifndef HAVE_NO_KRB5_524
691 status = krb5_524_conv_principal (context, v5cred->client,
696 afs_com_err(progname, status, "while converting principal "
697 "to Kerberos V4 format");
698 return AKLOG_KERBEROS;
700 strcpy (username, k4name);
702 strcat (username, ".");
703 strcat (username, k4inst);
706 len = min(get_princ_len(context, v5cred->client, 0),
707 second_comp(context, v5cred->client) ?
708 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
709 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
710 username[len] = '\0';
712 if (second_comp(context, v5cred->client)) {
713 strcat(username, ".");
714 p = username + strlen(username);
715 len = min(get_princ_len(context, v5cred->client, 1),
716 MAXKTCNAMELEN - strlen(username) - 1);
717 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
722 token = malloc(sizeof(struct ktc_token));
726 memset(token, 0, sizeof(struct ktc_token));
728 token->kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
729 token->startTime = v5cred->times.starttime;;
730 token->endTime = v5cred->times.endtime;
731 memcpy(&token->sessionKey, get_cred_keydata(v5cred),
732 get_cred_keylen(v5cred));
733 token->ticketLen = v5cred->ticket.length;
734 memcpy(token->ticket, v5cred->ticket.data, token->ticketLen);
737 *userPtr = strdup(username);
743 * Convert a Keberos ticket to an rxkad token, using information obtained
744 * from an external Kerberos 5->4 conversion service. If the code is built
745 * with HAVE_NO_KRB5_524 then this is a stub function which will always
746 * return success without a token.
749 * An initialised Kerberos 5 context
751 * A Kerberos credentials structure containing a suitable service ticket
752 * @param[out] tokenPtr
753 * An AFS token structure containing an rxkad token. This is a malloc'd
754 * structure which should be freed by the caller.
755 * @param[out[ userPtr
756 * A string containing the principal of the user to whom the token was
757 * issued. This is a malloc'd block which should be freed by the caller.
760 * 0 on success, an error value upon failure
763 #ifdef HAVE_NO_KRB5_524
765 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
766 struct ktc_token **tokenPtr, char **userPtr) {
774 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
775 struct ktc_token **tokenPtr, char **userPtr) {
777 char username[BUFSIZ];
778 struct ktc_token *token;
784 afs_dprintf("Using Kerberos 524 translator service\n");
786 status = krb5_524_convert_creds(context, v5cred, &cred);
789 afs_com_err(progname, status, "while converting tickets "
790 "to Kerberos V4 format");
791 return AKLOG_KERBEROS;
794 strcpy (username, cred.pname);
796 strcat (username, ".");
797 strcat (username, cred.pinst);
800 token = malloc(sizeof(struct ktc_token));
801 memset(token, 0, sizeof(struct ktc_token));
803 token->kvno = cred.kvno;
804 token->startTime = 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 token->endTime = v5cred->times.endtime;
814 memcpy(&token->sessionKey, cred.session, 8);
815 token->ticketLen = cred.ticket_st.length;
816 memcpy(token->ticket, cred.ticket_st.dat, token->ticketLen);
823 * This function gets an rxkad token for a given cell.
826 * An initialized Kerberos v5 context
828 * The cell information for the cell which we're obtaining a token for
830 * The realm to look in for the service principal. If NULL, then the
831 * realm is determined from the cell name or the user's credentials
832 * (see the documentation for rxkad_get_ticket)
834 * The rxkad token produced. This is a malloc'd structure which should
835 * be freed by the caller.
836 * @parma[out] authuser
837 * A string containing the principal of the user to whom the token was
838 * issued. This is a malloc'd block which should be freed by the caller.
839 * @param[out] foreign
840 * Whether the user is considered as 'foreign' to the realm of the cell.
843 * 0 on success, an error value upon failuer
846 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
847 struct ktc_token **token, char **authuser, int *foreign) {
849 char *realmUsed = NULL;
850 char *username = NULL;
858 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
863 status = rxkad_get_converted_token(context, v5cred, token, &username);
865 status = rxkad_build_native_token(context, v5cred, token, &username);
870 /* We now have the username, plus the realm name, so stitch them together
871 * to give us the name that the ptserver will know the user by */
872 if (realmUsed == NULL) {
873 *authuser = username;
877 len = strlen(username)+strlen(realmUsed)+2;
878 *authuser = malloc(len);
879 afs_snprintf(*authuser, len, "%s@%s", username, realmUsed);
893 get_kernel_token(struct afsconf_cell *cell, struct ktc_token **tokenPtr) {
894 struct ktc_principal client, server;
895 struct ktc_token *token;
900 strncpy(server.name, AFSKEY, MAXKTCNAMELEN - 1);
901 strncpy(server.instance, AFSINST, MAXKTCNAMELEN - 1);
902 strncpy(server.cell, cell->name, MAXKTCREALMLEN - 1);
904 token = malloc(sizeof(struct ktc_token));
908 memset(token, 0, sizeof(struct ktc_token));
910 ret = ktc_GetToken(&server, token, sizeof(struct ktc_token), &client);
921 set_kernel_token(struct afsconf_cell *cell, char *username,
922 struct ktc_token *token, int setpag)
924 struct ktc_principal client, server;
926 strncpy(client.name, username, MAXKTCNAMELEN - 1);
927 strcpy(client.instance, "");
928 strncpy(client.cell, cell->name, MAXKTCREALMLEN - 1);
930 strncpy(server.name, AFSKEY, MAXKTCNAMELEN - 1);
931 strncpy(server.instance, AFSINST, MAXKTCNAMELEN - 1);
932 strncpy(server.cell, cell->name, MAXKTCREALMLEN - 1);
934 return ktc_SetToken(&server, token, &client, setpag);
938 tokens_equal(struct ktc_token *tokenA, struct ktc_token *tokenB) {
939 return (tokenA != NULL && tokenB != NULL &&
940 tokenA->kvno == tokenB->kvno &&
941 tokenA->ticketLen == tokenB->ticketLen &&
942 !memcmp(&tokenA->sessionKey, &tokenB->sessionKey,
943 sizeof(tokenA->sessionKey)) &&
944 !memcmp(tokenA->ticket, tokenB->ticket, tokenA->ticketLen));
948 * Log to a cell. If the cell has already been logged to, return without
949 * doing anything. Otherwise, log to it and mark that it has been logged
953 auth_to_cell(krb5_context context, char *cell, char *realm, char **linkedcell)
955 int status = AKLOG_SUCCESS;
957 char *username = NULL; /* To hold client username structure */
958 afs_int32 viceId; /* AFS uid of user */
960 char *local_cell = NULL;
961 struct ktc_token *token;
962 struct ktc_token *btoken;
963 struct afsconf_cell cellconf;
965 /* NULL or empty cell returns information on local cell */
966 if ((status = get_cellconfig(cell, &cellconf, &local_cell)))
969 if (linkedcell != NULL && cellconf.linkedCell != NULL) {
970 *linkedcell = strdup(cellconf.linkedCell);
971 if (*linkedcell == NULL) {
977 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
978 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
979 status = AKLOG_SUCCESS;
984 * Record that we have attempted to log to this cell. We do this
985 * before we try rather than after so that we will not try
986 * and fail repeatedly for one cell.
988 ll_string(&authedcells, ll_s_add, cellconf.name);
991 * Record this cell in the list of zephyr subscriptions. We may
992 * want zephyr subscriptions even if authentication fails.
993 * If this is done after we attempt to get tokens, aklog -zsubs
994 * can return something different depending on whether or not we
995 * are in -noauth mode.
997 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
999 "%s: failure adding cell %s to zephyr subscriptions list.\n",
1000 progname, cellconf.name);
1003 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
1005 "%s: failure adding cell %s to zephyr subscriptions list.\n",
1006 progname, local_cell);
1011 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
1012 cellconf.hostName[0]);
1014 status = rxkad_get_token(context, &cellconf, realm, &token,
1015 &username, &isForeign);
1021 !get_kernel_token(&cellconf, &btoken) &&
1022 tokens_equal(token, btoken)) {
1023 afs_dprintf("Identical tokens already exist; skipping.\n");
1024 status = AKLOG_SUCCESS;
1033 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1036 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1039 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1040 status = pr_SNameToId (username, &viceId);
1043 afs_dprintf("Error %d\n", status);
1045 afs_dprintf("Id %d\n", (int) viceId);
1049 * This code is taken from cklog -- it lets people
1050 * automatically register with the ptserver in foreign cells
1053 #ifdef ALLOW_REGISTER
1054 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1055 afs_dprintf("doing first-time registration of %s at %s\n",
1056 username, cellconf.name);
1059 status = set_kernel_token(&cellconf, username, token, 0);
1061 afs_com_err(progname, status,
1062 "while obtaining tokens for cell %s",
1064 status = AKLOG_TOKEN;
1068 * In case you're wondering, we don't need to change the
1069 * filename here because we're still connecting to the
1070 * same cell -- we're just using a different authentication
1074 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1076 printf("Error %d\n", status);
1079 if ((status = pr_CreateUser(username, &viceId))) {
1080 fprintf(stderr, "%s: %s so unable to create remote PTS "
1081 "user %s in cell %s (status: %d).\n", progname,
1082 afs_error_message(status), username, cellconf.name,
1084 viceId = ANONYMOUSID;
1086 printf("created cross-cell entry for %s (Id %d) at %s\n",
1087 username, viceId, cellconf.name);
1090 #endif /* ALLOW_REGISTER */
1093 * This is a crock, but it is Transarc's crock, so we have to play
1094 * along in order to get the functionality. The way the afs id is
1095 * stored is as a string in the username field of the token.
1096 * Contrary to what you may think by looking at the code for
1097 * tokens, this hack (AFS ID %d) will not work if you change %d
1098 * to something else.
1101 if ((status == 0) && (viceId != ANONYMOUSID)) {
1102 sprintf(username, "AFS ID %d", (int) viceId);
1106 afs_dprintf("Set username to %s\n", username);
1108 afs_dprintf("Setting tokens. %s @ %s \n", username, cellconf.name);
1110 #ifndef AFS_AIX51_ENV
1111 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1112 * this routine, it will not add the token. It is not clear what
1113 * is going on here! So we will do the following operation.
1114 * On AIX 5, it causes the parent program to die, so we won't.
1116 write(2,"",0); /* dummy write */
1118 status = set_kernel_token(&cellconf, username, token, afssetpag);
1120 afs_com_err(progname, status, "while obtaining tokens for cell %s",
1122 status = AKLOG_TOKEN;
1126 afs_dprintf("Noauth mode; not authenticating.\n");
1138 get_afs_mountpoint(char *file, char *mountpoint, int size)
1141 char V ='V'; /* AFS has problem on Sun with pioctl */
1143 char our_file[MAXPATHLEN + 1];
1145 char *last_component;
1146 struct ViceIoctl vio;
1147 char cellname[BUFSIZ];
1149 memset(our_file, 0, sizeof(our_file));
1150 strcpy(our_file, file);
1152 if ((last_component = strrchr(our_file, DIR))) {
1153 *last_component++ = 0;
1154 parent_dir = our_file;
1157 last_component = our_file;
1161 memset(cellname, 0, sizeof(cellname));
1163 vio.in = last_component;
1164 vio.in_size = strlen(last_component)+1;
1165 vio.out_size = size;
1166 vio.out = mountpoint;
1168 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1169 if (strchr(mountpoint, VOLMARKER) == NULL) {
1171 vio.in_size = strlen(file) + 1;
1172 vio.out_size = sizeof(cellname);
1175 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1176 strcat(cellname, VOLMARKERSTRING);
1177 strcat(cellname, mountpoint + 1);
1178 memset(mountpoint + 1, 0, size - 1);
1179 strcpy(mountpoint + 1, cellname);
1189 * This routine each time it is called returns the next directory
1190 * down a pathname. It resolves all symbolic links. The first time
1191 * it is called, it should be called with the name of the path
1192 * to be descended. After that, it should be called with the arguemnt
1196 next_path(char *origpath)
1198 static char path[MAXPATHLEN + 1];
1199 static char pathtocheck[MAXPATHLEN + 1];
1201 int link = FALSE; /* Is this a symbolic link? */
1202 char linkbuf[MAXPATHLEN + 1];
1203 char tmpbuf[MAXPATHLEN + 1];
1205 static char *last_comp; /* last component of directory name */
1206 static char *elast_comp; /* End of last component */
1210 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1212 /* If we are given something for origpath, we are initializing only. */
1214 memset(path, 0, sizeof(path));
1215 memset(pathtocheck, 0, sizeof(pathtocheck));
1216 strcpy(path, origpath);
1222 /* We were not given origpath; find then next path to check */
1224 /* If we've gotten all the way through already, return NULL */
1225 if (last_comp == NULL)
1229 while (*last_comp == DIR)
1230 strncat(pathtocheck, last_comp++, 1);
1231 len = (elast_comp = strchr(last_comp, DIR))
1232 ? elast_comp - last_comp : strlen(last_comp);
1233 strncat(pathtocheck, last_comp, len);
1234 memset(linkbuf, 0, sizeof(linkbuf));
1235 if ((link = (readlink(pathtocheck, linkbuf,
1236 sizeof(linkbuf)) > 0))) {
1237 if (++symlinkcount > MAXSYMLINKS) {
1238 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1239 exit(AKLOG_BADPATH);
1241 memset(tmpbuf, 0, sizeof(tmpbuf));
1243 strcpy(tmpbuf, elast_comp);
1244 if (linkbuf[0] == DIR) {
1246 * If this is a symbolic link to an absolute path,
1247 * replace what we have by the absolute path.
1249 memset(path, 0, strlen(path));
1250 memcpy(path, linkbuf, sizeof(linkbuf));
1251 strcat(path, tmpbuf);
1254 memset(pathtocheck, 0, sizeof(pathtocheck));
1258 * If this is a symbolic link to a relative path,
1259 * replace only the last component with the link name.
1261 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1262 strcat(path, tmpbuf);
1264 if ((t = strrchr(pathtocheck, DIR))) {
1266 memset(t, 0, strlen(t));
1269 memset(pathtocheck, 0, sizeof(pathtocheck));
1273 last_comp = elast_comp;
1277 return(pathtocheck);
1281 add_hosts(char *file)
1284 char V = 'V'; /* AFS has problem on SunOS */
1286 struct ViceIoctl vio;
1287 char outbuf[BUFSIZ];
1293 memset(outbuf, 0, sizeof(outbuf));
1295 vio.out_size = sizeof(outbuf);
1299 afs_dprintf("Getting list of hosts for %s\n", file);
1301 /* Don't worry about errors. */
1302 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1303 phosts = (long *) outbuf;
1306 * Lists hosts that we care about. If ALLHOSTS is defined,
1307 * then all hosts that you ever may possible go through are
1308 * included in this list. If not, then only hosts that are
1309 * the only ones appear. That is, if a volume you must use
1310 * is replaced on only one server, that server is included.
1311 * If it is replicated on many servers, then none are included.
1312 * This is not perfect, but the result is that people don't
1313 * get subscribed to a lot of instances of FILSRV that they
1314 * probably won't need which reduces the instances of
1315 * people getting messages that don't apply to them.
1318 if (phosts[1] != '\0')
1321 for (i = 0; phosts[i]; i++) {
1323 in.s_addr = phosts[i];
1324 afs_dprintf("Got host %s\n", inet_ntoa(in));
1325 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1327 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1328 afs_dprintf("Got host %s\n", hp->h_name);
1329 ll_string(&zsublist, ll_s_add, hp->h_name);
1336 * This routine descends through a path to a directory, logging to
1337 * every cell it encounters along the way.
1340 auth_to_path(krb5_context context, char *path)
1342 int status = AKLOG_SUCCESS;
1343 int auth_status = AKLOG_SUCCESS;
1346 char pathtocheck[MAXPATHLEN + 1];
1347 char mountpoint[MAXPATHLEN + 1];
1356 strcpy(pathtocheck, path);
1358 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1359 fprintf(stderr, "Unable to find current working directory:\n");
1360 fprintf(stderr, "%s\n", pathtocheck);
1361 fprintf(stderr, "Try an absolute pathname.\n");
1362 exit(AKLOG_BADPATH);
1365 strcat(pathtocheck, DIRSTRING);
1366 strcat(pathtocheck, path);
1369 next_path(pathtocheck);
1371 /* Go on to the next level down the path */
1372 while ((nextpath = next_path(NULL))) {
1373 strcpy(pathtocheck, nextpath);
1374 afs_dprintf("Checking directory %s\n", pathtocheck);
1376 * If this is an afs mountpoint, determine what cell from
1377 * the mountpoint name which is of the form
1378 * #cellname:volumename or %cellname:volumename.
1380 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1381 /* skip over the '#' or '%' */
1382 cell = mountpoint + 1;
1383 /* Add this (cell:volumename) to the list of zsubs */
1385 ll_string(&zsublist, ll_s_add, cell);
1387 add_hosts(pathtocheck);
1388 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1390 if ((auth_status = auth_to_cell(context, cell, NULL, NULL))) {
1391 if (status == AKLOG_SUCCESS)
1392 status = auth_status;
1393 else if (status != auth_status)
1394 status = AKLOG_SOMETHINGSWRONG;
1399 if (isdir(pathtocheck, &isdirectory) < 0) {
1401 * If we've logged and still can't stat, there's
1404 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1405 pathtocheck, strerror(errno));
1406 return(AKLOG_BADPATH);
1408 else if (! isdirectory) {
1409 /* Allow only directories */
1410 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1412 return(AKLOG_BADPATH);
1422 /* Print usage message and exit */
1426 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1427 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1428 "[[-p | -path] pathname]\n",
1429 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1431 #ifndef HAVE_NO_KRB5_524
1435 fprintf(stderr, " -d gives debugging information.\n");
1436 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1437 fprintf(stderr, " pathname is the name of a directory to which ");
1438 fprintf(stderr, "you wish to authenticate.\n");
1439 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1440 fprintf(stderr, " -hosts gives host address information.\n");
1441 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1442 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1443 fprintf(stderr, " -force means replace identical tickets. \n");
1444 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1445 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1446 #ifndef HAVE_NO_KRB5_524
1447 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1449 fprintf(stderr, " No commandline arguments means ");
1450 fprintf(stderr, "authenticate to the local cell.\n");
1451 fprintf(stderr, "\n");
1456 main(int argc, char *argv[])
1458 krb5_context context;
1459 int status = AKLOG_SUCCESS;
1461 int somethingswrong = FALSE;
1463 cellinfo_t cellinfo;
1465 extern char *progname; /* Name of this program */
1467 int cmode = FALSE; /* Cellname mode */
1468 int pmode = FALSE; /* Path name mode */
1470 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1471 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1472 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1474 linked_list cells; /* List of cells to log to */
1475 linked_list paths; /* List of paths to log to */
1479 memset(&cellinfo, 0, sizeof(cellinfo));
1481 memset(realm, 0, sizeof(realm));
1482 memset(cell, 0, sizeof(cell));
1483 memset(path, 0, sizeof(path));
1491 /* Store the program name here for error messages */
1492 if ((progname = strrchr(argv[0], DIR)))
1497 krb5_init_context(&context);
1498 initialize_KTC_error_table ();
1499 initialize_U_error_table();
1500 initialize_RXK_error_table();
1501 initialize_ACFG_error_table();
1502 initialize_PT_error_table();
1503 afs_set_com_err_hook(redirect_errors);
1506 * Enable DES enctypes, which are currently still required for AFS.
1507 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1510 #if defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1511 krb5_allow_weak_crypto(context, 1);
1512 #elif defined(HAVE_KRB5_ENCTYPE_ENABLE)
1513 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1515 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1518 /* Initialize list of cells to which we have authenticated */
1519 ll_init(&authedcells);
1521 /* Parse commandline arguments and make list of what to do. */
1522 for (i = 1; i < argc; i++) {
1523 if (strcmp(argv[i], "-d") == 0)
1525 else if (strcmp(argv[i], "-noauth") == 0)
1527 else if (strcmp(argv[i], "-zsubs") == 0)
1529 else if (strcmp(argv[i], "-hosts") == 0)
1531 else if (strcmp(argv[i], "-noprdb") == 0)
1533 else if (strcmp(argv[i], "-linked") == 0)
1535 else if (strcmp(argv[i], "-force") == 0)
1537 #ifndef HAVE_NO_KRB5_524
1538 else if (strcmp(argv[i], "-524") == 0)
1541 else if (strcmp(argv[i], "-setpag") == 0)
1543 else if (((strcmp(argv[i], "-cell") == 0) ||
1544 (strcmp(argv[i], "-c") == 0)) && !pmode)
1547 strcpy(cell, argv[i]);
1551 else if ((strcmp(argv[i], "-keytab") == 0))
1557 else if ((strcmp(argv[i], "-principal") == 0))
1563 else if (((strcmp(argv[i], "-path") == 0) ||
1564 (strcmp(argv[i], "-p") == 0)) && !cmode)
1567 strcpy(path, argv[i]);
1572 else if (argv[i][0] == '-')
1574 else if (!pmode && !cmode) {
1575 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1576 (strcmp(argv[i], "..") == 0)) {
1578 strcpy(path, argv[i]);
1582 strcpy(cell, argv[i]);
1589 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1592 strcpy(realm, argv[i]);
1596 /* Add this cell to list of cells */
1597 strcpy(cellinfo.cell, cell);
1598 strcpy(cellinfo.realm, realm);
1599 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1601 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1602 ll_add_data(cur_node, new_cellinfo);
1605 "%s: failure copying cellinfo.\n", progname);
1610 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1614 memset(&cellinfo, 0, sizeof(cellinfo));
1616 memset(cell, 0, sizeof(cell));
1617 memset(realm, 0, sizeof(realm));
1620 /* Add this path to list of paths */
1621 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1623 if ((new_path = strdup(path)))
1624 ll_add_data(cur_node, new_path);
1626 fprintf(stderr, "%s: failure copying path name.\n",
1632 fprintf(stderr, "%s: failure adding path to paths list.\n",
1637 memset(path, 0, sizeof(path));
1641 /* If nothing was given, log to the local cell. */
1642 if ((cells.nelements + paths.nelements) == 0) {
1645 status = auth_to_cell(context, NULL, NULL, &linkedcell);
1647 /* If this cell is linked to a DCE cell, and user requested -linked,
1648 * get tokens for both. This is very useful when the AFS cell is
1649 * linked to a DFS cell and this system does not also have DFS.
1652 if (!status && linked && linkedcell != NULL) {
1653 afs_dprintf("Linked cell: %s\n", linkedcell);
1654 status = auth_to_cell(context, linkedcell, NULL, NULL);
1662 * Local hack - if the person has a file in their home
1663 * directory called ".xlog", read that for a list of
1664 * extra cells to authenticate to
1667 if ((pwd = getpwuid(getuid())) != NULL) {
1670 char fcell[100], xlog_path[512];
1672 strcpy(xlog_path, pwd->pw_dir);
1673 strcat(xlog_path, "/.xlog");
1675 if ((stat(xlog_path, &sbuf) == 0) &&
1676 ((f = fopen(xlog_path, "r")) != NULL)) {
1678 afs_dprintf("Reading %s for cells to authenticate to.\n",
1681 while (fgets(fcell, 100, f) != NULL) {
1684 fcell[strlen(fcell) - 1] = '\0';
1686 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1688 auth_status = auth_to_cell(context, fcell, NULL, NULL);
1689 if (status == AKLOG_SUCCESS)
1690 status = auth_status;
1692 status = AKLOG_SOMETHINGSWRONG;
1698 /* Log to all cells in the cells list first */
1699 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1700 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1701 if ((status = auth_to_cell(context, cellinfo.cell, cellinfo.realm,
1705 if (linked && linkedcell != NULL) {
1706 afs_dprintf("Linked cell: %s\n", linkedcell);
1707 if ((status = auth_to_cell(context, linkedcell,
1708 cellinfo.realm, NULL)))
1711 if (linkedcell != NULL) {
1718 /* Then, log to all paths in the paths list */
1719 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1720 if ((status = auth_to_path(context, cur_node->data)))
1725 * If only one thing was logged to, we'll return the status
1726 * of the single call. Otherwise, we'll return a generic
1727 * something failed status.
1729 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1730 status = AKLOG_SOMETHINGSWRONG;
1733 /* If we are keeping track of zephyr subscriptions, print them. */
1735 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1736 printf("zsub: %s\n", cur_node->data);
1739 /* If we are keeping track of host information, print it. */
1741 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1742 printf("host: %s\n", cur_node->data);
1749 isdir(char *path, unsigned char *val)
1751 struct stat statbuf;
1753 if (lstat(path, &statbuf) < 0)
1756 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1764 static krb5_error_code
1765 get_credv5_akimpersonate(krb5_context context,
1767 krb5_principal service_principal,
1768 krb5_principal client_principal,
1771 int *allowed_enctypes,
1773 krb5_creds** out_creds /* out */ )
1775 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1776 krb5_error_code code;
1778 krb5_kt_cursor cursor[1];
1779 krb5_keytab_entry entry[1];
1781 krb5_creds *creds = 0;
1782 krb5_enctype enctype;
1784 krb5_keyblock session_key[1];
1786 Ticket ticket_reply[1];
1787 EncTicketPart enc_tkt_reply[1];
1788 krb5_address address[30];
1789 krb5_addresses faddr[1];
1791 time_t temp_time[2];
1793 krb5_ticket ticket_reply[1];
1794 krb5_enc_tkt_part enc_tkt_reply[1];
1795 krb5_address address[30], *faddr[30];
1799 static int any_enctype[] = {0};
1801 if (!(creds = malloc(sizeof *creds))) {
1805 if (!allowed_enctypes)
1806 allowed_enctypes = any_enctype;
1809 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1810 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1811 memset((char*)creds, 0, sizeof *creds);
1812 memset((char*)entry, 0, sizeof *entry);
1813 memset((char*)session_key, 0, sizeof *session_key);
1814 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1815 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1816 code = krb5_kt_resolve(context, keytab, &kt);
1819 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1821 afs_com_err(progname, code, "while resolving default keytab");
1825 if (service_principal) {
1826 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1827 code = krb5_kt_get_entry(context,
1834 if (allowed_enctypes[i])
1835 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1840 afs_com_err(progname, code,"while scanning keytab entries");
1844 krb5_keytab_entry new[1];
1846 memset(new, 0, sizeof *new);
1847 if ((code == krb5_kt_start_seq_get(context, kt, cursor))) {
1848 afs_com_err(progname, code, "while starting keytab scan");
1851 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1853 allowed_enctypes[i] && allowed_enctypes[i]
1854 != deref_entry_enctype(new); ++i)
1856 if ((!i || allowed_enctypes[i]) &&
1857 (best < 0 || best > i)) {
1858 krb5_free_keytab_entry_contents(context, entry);
1860 memset(new, 0, sizeof *new);
1861 } else krb5_free_keytab_entry_contents(context, new);
1863 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1864 afs_com_err(progname, i, "while ending keytab scan");
1869 afs_com_err(progname, code, "while scanning keytab");
1872 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1878 if ((code = krb5_generate_random_keyblock(context,
1879 deref_keyblock_enctype(session_key), session_key))) {
1880 afs_com_err(progname, code, "while making session key");
1883 enc_tkt_reply->flags.initial = 1;
1884 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1885 enc_tkt_reply->cname = client_principal->name;
1886 enc_tkt_reply->crealm = client_principal->realm;
1887 enc_tkt_reply->key = *session_key;
1889 static krb5_data empty_string;
1890 enc_tkt_reply->transited.contents = empty_string;
1892 enc_tkt_reply->authtime = starttime;
1893 enc_tkt_reply->starttime = temp_time;
1894 *enc_tkt_reply->starttime = starttime;
1896 enc_tkt_reply->renew_till = temp_time + 1;
1897 *enc_tkt_reply->renew_till = endtime;
1899 enc_tkt_reply->endtime = endtime;
1901 if ((code = krb5_c_make_random_key(context,
1902 deref_keyblock_enctype(session_key), session_key))) {
1903 afs_com_err(progname, code, "while making session key");
1906 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1907 #define DATACAST (unsigned char *)
1908 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1909 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1910 enc_tkt_reply->session = session_key;
1911 enc_tkt_reply->client = client_principal;
1913 static krb5_data empty_string;
1914 enc_tkt_reply->transited.tr_contents = empty_string;
1916 enc_tkt_reply->times.authtime = starttime;
1917 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1918 enc_tkt_reply->times.endtime = endtime;
1919 #endif /* USING_HEIMDAL */
1920 /* NB: We will discard address for now--ignoring caddr field
1921 in any case. MIT branch does what it always did. */
1923 if (paddress && *paddress) {
1924 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1927 faddr->val = address;
1929 for (i = 0; paddress[i]; ++i) {
1931 address[i].addr_type = KRB5_ADDRESS_INET;
1932 address[i].address.data = (void*)(paddress+i);
1933 address[i].address.length = sizeof(paddress[i]);
1936 address[i].magic = KV5M_ADDRESS;
1937 address[i].addrtype = ADDRTYPE_INET;
1939 address[i].addrtype = AF_INET;
1941 address[i].contents = (void*)(paddress+i);
1942 address[i].length = sizeof(int);
1943 faddr[i] = address+i;
1954 ticket_reply->sname = service_principal->name;
1955 ticket_reply->realm = service_principal->realm;
1957 { /* crypto block */
1958 krb5_crypto crypto = 0;
1959 unsigned char *buf = 0;
1960 size_t buf_size, buf_len;
1963 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
1964 enc_tkt_reply, &buf_len, code);
1966 afs_com_err(progname, code, "while encoding ticket");
1970 if(buf_len != buf_size) {
1971 afs_com_err(progname, code,
1972 "%d != %d while encoding ticket (internal ASN.1 encoder error",
1976 what = "krb5_crypto_init";
1977 code = krb5_crypto_init(context,
1978 &deref_entry_keyblock(entry),
1979 deref_entry_enctype(entry),
1982 what = "krb5_encrypt";
1983 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
1984 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
1987 if (crypto) krb5_crypto_destroy(context, crypto);
1989 afs_com_err(progname, code, "while %s", what);
1992 } /* crypto block */
1993 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
1994 ticket_reply->enc_part.kvno = temp_vno;
1995 *ticket_reply->enc_part.kvno = entry->vno;
1996 ticket_reply->tkt_vno = 5;
1998 ticket_reply->server = service_principal;
1999 ticket_reply->enc_part2 = enc_tkt_reply;
2000 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
2001 afs_com_err(progname, code, "while making ticket");
2004 ticket_reply->enc_part.kvno = entry->vno;
2007 /* Construct Creds */
2009 if ((code = krb5_copy_principal(context, service_principal,
2011 afs_com_err(progname, code, "while copying service principal");
2014 if ((code = krb5_copy_principal(context, client_principal,
2016 afs_com_err(progname, code, "while copying client principal");
2019 if ((code = krb5_copy_keyblock_contents(context, session_key,
2020 &deref_session_key(creds)))) {
2021 afs_com_err(progname, code, "while copying session key");
2026 creds->times.authtime = enc_tkt_reply->authtime;
2027 creds->times.starttime = *(enc_tkt_reply->starttime);
2028 creds->times.endtime = enc_tkt_reply->endtime;
2029 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2030 creds->flags.b = enc_tkt_reply->flags;
2032 creds->times = enc_tkt_reply->times;
2033 creds->ticket_flags = enc_tkt_reply->flags;
2035 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2037 else if ((code = krb5_copy_addresses(context,
2038 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2039 afs_com_err(progname, code, "while copying addresses");
2045 size_t creds_tkt_len;
2046 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2047 ticket_reply, &creds_tkt_len, code);
2049 afs_com_err(progname, code, "while encoding ticket");
2054 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2055 afs_com_err(progname, code, "while encoding ticket");
2058 creds->ticket = *temp;
2065 if (deref_enc_data(&ticket_reply->enc_part))
2066 free(deref_enc_data(&ticket_reply->enc_part));
2067 krb5_free_keytab_entry_contents(context, entry);
2068 if (client_principal)
2069 krb5_free_principal(context, client_principal);
2070 if (service_principal)
2071 krb5_free_principal(context, service_principal);
2073 krb5_cc_close(context, cc);
2075 krb5_kt_close(context, kt);
2076 if (creds) krb5_free_creds(context, creds);
2077 krb5_free_keyblock_contents(context, session_key);
2086 static krb5_error_code
2087 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2092 static krb5_principal client_principal = 0;
2094 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2095 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2097 memset(&increds, 0, sizeof(increds));
2098 /* ANL - instance may be ptr to a null string. Pass null then */
2099 if ((r = krb5_build_principal(context, &increds.server,
2100 strlen(realm), realm,
2102 (inst && strlen(inst)) ? inst : (void *) NULL,
2108 if (!_krb425_ccache) {
2109 r = krb5_cc_default(context, &_krb425_ccache);
2113 if (!client_principal) {
2115 r = krb5_parse_name(context, client, &client_principal);
2117 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2123 increds.client = client_principal;
2124 increds.times.endtime = 0;
2125 /* Ask for DES since that is what V4 understands */
2126 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2129 int allowed_enctypes[] = {
2130 ENCTYPE_DES_CBC_CRC, 0
2133 r = get_credv5_akimpersonate(context,
2142 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2149 get_user_realm(krb5_context context, char **realm)
2151 static krb5_principal client_principal = 0;
2152 krb5_error_code r = 0;
2156 if (!_krb425_ccache)
2157 krb5_cc_default(context, &_krb425_ccache);
2158 if (!client_principal) {
2160 r = krb5_parse_name(context, client, &client_principal);
2162 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2168 *realm = extract_realm(context, client_principal);