17c478bd9Sstevel@tonic-gate /*
2159d09a2SMark Phalan  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
37c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
47c478bd9Sstevel@tonic-gate  */
57c478bd9Sstevel@tonic-gate 
67c478bd9Sstevel@tonic-gate 
77c478bd9Sstevel@tonic-gate /*
87c478bd9Sstevel@tonic-gate  * lib/krb5/rcache/ser_rc.c
97c478bd9Sstevel@tonic-gate  *
107c478bd9Sstevel@tonic-gate  * Copyright 1995 by the Massachusetts Institute of Technology.
117c478bd9Sstevel@tonic-gate  * All Rights Reserved.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * Export of this software from the United States of America may
147c478bd9Sstevel@tonic-gate  *   require a specific license from the United States Government.
157c478bd9Sstevel@tonic-gate  *   It is the responsibility of any person or organization contemplating
167c478bd9Sstevel@tonic-gate  *   export to obtain such a license before exporting.
177c478bd9Sstevel@tonic-gate  *
187c478bd9Sstevel@tonic-gate  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
197c478bd9Sstevel@tonic-gate  * distribute this software and its documentation for any purpose and
207c478bd9Sstevel@tonic-gate  * without fee is hereby granted, provided that the above copyright
217c478bd9Sstevel@tonic-gate  * notice appear in all copies and that both that copyright notice and
227c478bd9Sstevel@tonic-gate  * this permission notice appear in supporting documentation, and that
237c478bd9Sstevel@tonic-gate  * the name of M.I.T. not be used in advertising or publicity pertaining
247c478bd9Sstevel@tonic-gate  * to distribution of the software without specific, written prior
257c478bd9Sstevel@tonic-gate  * permission.  Furthermore if you modify this software you must label
267c478bd9Sstevel@tonic-gate  * your software as modified software and not distribute it in such a
277c478bd9Sstevel@tonic-gate  * fashion that it might be confused with the original M.I.T. software.
287c478bd9Sstevel@tonic-gate  * M.I.T. makes no representations about the suitability of
297c478bd9Sstevel@tonic-gate  * this software for any purpose.  It is provided "as is" without express
307c478bd9Sstevel@tonic-gate  * or implied warranty.
317c478bd9Sstevel@tonic-gate  *
327c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate /*
357c478bd9Sstevel@tonic-gate  * ser_rcdfl.c - Serialize replay cache context.
367c478bd9Sstevel@tonic-gate  */
37159d09a2SMark Phalan #include "k5-int.h"
38505d05c7Sgtb #include "rc-int.h"
397c478bd9Sstevel@tonic-gate 
407c478bd9Sstevel@tonic-gate /*
417c478bd9Sstevel@tonic-gate  * Routines to deal with externalizing krb5_rcache.
427c478bd9Sstevel@tonic-gate  *	krb5_rcache_size();
437c478bd9Sstevel@tonic-gate  *	krb5_rcache_externalize();
447c478bd9Sstevel@tonic-gate  *	krb5_rcache_internalize();
457c478bd9Sstevel@tonic-gate  */
467c478bd9Sstevel@tonic-gate static krb5_error_code krb5_rcache_size
47505d05c7Sgtb 	(krb5_context, krb5_pointer, size_t *);
487c478bd9Sstevel@tonic-gate static krb5_error_code krb5_rcache_externalize
49505d05c7Sgtb 	(krb5_context, krb5_pointer, krb5_octet **, size_t *);
507c478bd9Sstevel@tonic-gate static krb5_error_code krb5_rcache_internalize
51505d05c7Sgtb 	(krb5_context,krb5_pointer *, krb5_octet **, size_t *);
527c478bd9Sstevel@tonic-gate 
537c478bd9Sstevel@tonic-gate /*
547c478bd9Sstevel@tonic-gate  * Serialization entry for this type.
557c478bd9Sstevel@tonic-gate  */
567c478bd9Sstevel@tonic-gate static const krb5_ser_entry krb5_rcache_ser_entry = {
577c478bd9Sstevel@tonic-gate     KV5M_RCACHE,			/* Type			*/
587c478bd9Sstevel@tonic-gate     krb5_rcache_size,			/* Sizer routine	*/
597c478bd9Sstevel@tonic-gate     krb5_rcache_externalize,		/* Externalize routine	*/
607c478bd9Sstevel@tonic-gate     krb5_rcache_internalize		/* Internalize routine	*/
617c478bd9Sstevel@tonic-gate };
627c478bd9Sstevel@tonic-gate 
637c478bd9Sstevel@tonic-gate /*
647c478bd9Sstevel@tonic-gate  * krb5_rcache_size()	- Determine the size required to externalize
657c478bd9Sstevel@tonic-gate  *				  this krb5_rcache variant.
667c478bd9Sstevel@tonic-gate  */
677c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_rcache_size(krb5_context kcontext,krb5_pointer arg,size_t * sizep)68505d05c7Sgtb krb5_rcache_size(krb5_context kcontext, krb5_pointer arg, size_t *sizep)
697c478bd9Sstevel@tonic-gate {
707c478bd9Sstevel@tonic-gate     krb5_error_code	kret;
717c478bd9Sstevel@tonic-gate     krb5_rcache		rcache;
727c478bd9Sstevel@tonic-gate     size_t		required;
737c478bd9Sstevel@tonic-gate 
747c478bd9Sstevel@tonic-gate     kret = EINVAL;
75159d09a2SMark Phalan     /* Solaris Kerberos */
767c478bd9Sstevel@tonic-gate     if ((rcache = (krb5_rcache) arg) != NULL) {
777c478bd9Sstevel@tonic-gate 	/*
787c478bd9Sstevel@tonic-gate 	 * Saving FILE: variants of krb5_rcache requires at minimum:
797c478bd9Sstevel@tonic-gate 	 *	krb5_int32	for KV5M_RCACHE
807c478bd9Sstevel@tonic-gate 	 *	krb5_int32	for length of rcache name.
817c478bd9Sstevel@tonic-gate 	 *	krb5_int32	for KV5M_RCACHE
827c478bd9Sstevel@tonic-gate 	 */
837c478bd9Sstevel@tonic-gate 	required = sizeof(krb5_int32) * 3;
847c478bd9Sstevel@tonic-gate 	if (rcache->ops && rcache->ops->type)
857c478bd9Sstevel@tonic-gate 	    required += (strlen(rcache->ops->type)+1);
867c478bd9Sstevel@tonic-gate 
877c478bd9Sstevel@tonic-gate 	/*
887c478bd9Sstevel@tonic-gate 	 * The rcache name is formed as follows:
897c478bd9Sstevel@tonic-gate 	 *	<type>:<name>
907c478bd9Sstevel@tonic-gate 	 */
917c478bd9Sstevel@tonic-gate 	required += strlen(krb5_rc_get_name(kcontext, rcache));
927c478bd9Sstevel@tonic-gate 
937c478bd9Sstevel@tonic-gate 	kret = 0;
947c478bd9Sstevel@tonic-gate 	*sizep += required;
957c478bd9Sstevel@tonic-gate     }
967c478bd9Sstevel@tonic-gate     return(kret);
977c478bd9Sstevel@tonic-gate }
987c478bd9Sstevel@tonic-gate 
997c478bd9Sstevel@tonic-gate /*
1007c478bd9Sstevel@tonic-gate  * krb5_rcache_externalize()	- Externalize the krb5_rcache.
1017c478bd9Sstevel@tonic-gate  */
1027c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_rcache_externalize(krb5_context kcontext,krb5_pointer arg,krb5_octet ** buffer,size_t * lenremain)103505d05c7Sgtb krb5_rcache_externalize(krb5_context kcontext, krb5_pointer arg, krb5_octet **buffer, size_t *lenremain)
1047c478bd9Sstevel@tonic-gate {
1057c478bd9Sstevel@tonic-gate     krb5_error_code	kret;
1067c478bd9Sstevel@tonic-gate     krb5_rcache		rcache;
1077c478bd9Sstevel@tonic-gate     size_t		required;
1087c478bd9Sstevel@tonic-gate     krb5_octet		*bp;
1097c478bd9Sstevel@tonic-gate     size_t		remain;
1107c478bd9Sstevel@tonic-gate     char		*rcname;
1117c478bd9Sstevel@tonic-gate     size_t		namelen;
1127c478bd9Sstevel@tonic-gate     char		*fnamep;
1137c478bd9Sstevel@tonic-gate 
1147c478bd9Sstevel@tonic-gate     required = 0;
1157c478bd9Sstevel@tonic-gate     bp = *buffer;
1167c478bd9Sstevel@tonic-gate     remain = *lenremain;
1177c478bd9Sstevel@tonic-gate     kret = EINVAL;
118159d09a2SMark Phalan     /* Solaris Kerberos */
1197c478bd9Sstevel@tonic-gate     if ((rcache = (krb5_rcache) arg) != NULL) {
1207c478bd9Sstevel@tonic-gate 	kret = ENOMEM;
1217c478bd9Sstevel@tonic-gate 	if (!krb5_rcache_size(kcontext, arg, &required) &&
1227c478bd9Sstevel@tonic-gate 	    (required <= remain)) {
1237c478bd9Sstevel@tonic-gate 	    /* Our identifier */
1247c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_pack_int32(KV5M_RCACHE, &bp, &remain);
1257c478bd9Sstevel@tonic-gate 
1267c478bd9Sstevel@tonic-gate 	    /* Calculate the length of the name */
1277c478bd9Sstevel@tonic-gate 	    namelen = (rcache->ops && rcache->ops->type) ?
1287c478bd9Sstevel@tonic-gate 		strlen(rcache->ops->type)+1 : 0;
1297c478bd9Sstevel@tonic-gate 	    fnamep = krb5_rc_get_name(kcontext, rcache);
1307c478bd9Sstevel@tonic-gate 	    namelen += (strlen(fnamep)+1);
1317c478bd9Sstevel@tonic-gate 
1327c478bd9Sstevel@tonic-gate 	    if ((rcname = (char *) malloc(namelen))) {
1337c478bd9Sstevel@tonic-gate 		/* Format the rcache name. */
1347c478bd9Sstevel@tonic-gate 		if (rcache->ops && rcache->ops->type)
1357c478bd9Sstevel@tonic-gate 		    sprintf(rcname, "%s:%s", rcache->ops->type, fnamep);
1367c478bd9Sstevel@tonic-gate 		else
1377c478bd9Sstevel@tonic-gate 		    strcpy(rcname, fnamep);
1387c478bd9Sstevel@tonic-gate 
1397c478bd9Sstevel@tonic-gate 		/* Put the length of the file name */
1407c478bd9Sstevel@tonic-gate 		(void) krb5_ser_pack_int32((krb5_int32) strlen(rcname),
1417c478bd9Sstevel@tonic-gate 					   &bp, &remain);
142*55fea89dSDan Cross 
1437c478bd9Sstevel@tonic-gate 		/* Put the name */
1447c478bd9Sstevel@tonic-gate 		(void) krb5_ser_pack_bytes((krb5_octet *) rcname,
1457c478bd9Sstevel@tonic-gate 					   strlen(rcname),
1467c478bd9Sstevel@tonic-gate 					   &bp, &remain);
1477c478bd9Sstevel@tonic-gate 
1487c478bd9Sstevel@tonic-gate 		/* Put the trailer */
1497c478bd9Sstevel@tonic-gate 		(void) krb5_ser_pack_int32(KV5M_RCACHE, &bp, &remain);
1507c478bd9Sstevel@tonic-gate 		kret = 0;
1517c478bd9Sstevel@tonic-gate 		*buffer = bp;
1527c478bd9Sstevel@tonic-gate 		*lenremain = remain;
1537c478bd9Sstevel@tonic-gate 		free(rcname);
1547c478bd9Sstevel@tonic-gate 	    }
1557c478bd9Sstevel@tonic-gate 	}
1567c478bd9Sstevel@tonic-gate     }
1577c478bd9Sstevel@tonic-gate     return(kret);
1587c478bd9Sstevel@tonic-gate }
1597c478bd9Sstevel@tonic-gate 
1607c478bd9Sstevel@tonic-gate /*
1617c478bd9Sstevel@tonic-gate  * krb5_rcache_internalize()	- Internalize the krb5_rcache.
1627c478bd9Sstevel@tonic-gate  */
1637c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_rcache_internalize(krb5_context kcontext,krb5_pointer * argp,krb5_octet ** buffer,size_t * lenremain)164505d05c7Sgtb krb5_rcache_internalize(krb5_context kcontext, krb5_pointer *argp, krb5_octet **buffer, size_t *lenremain)
1657c478bd9Sstevel@tonic-gate {
1667c478bd9Sstevel@tonic-gate     krb5_error_code	kret;
1677c478bd9Sstevel@tonic-gate     krb5_rcache		rcache;
1687c478bd9Sstevel@tonic-gate     krb5_int32		ibuf;
1697c478bd9Sstevel@tonic-gate     krb5_octet		*bp;
1707c478bd9Sstevel@tonic-gate     size_t		remain;
1717c478bd9Sstevel@tonic-gate     char		*rcname;
1727c478bd9Sstevel@tonic-gate 
1737c478bd9Sstevel@tonic-gate     bp = *buffer;
1747c478bd9Sstevel@tonic-gate     remain = *lenremain;
1757c478bd9Sstevel@tonic-gate     kret = EINVAL;
1767c478bd9Sstevel@tonic-gate     /* Read our magic number */
1777c478bd9Sstevel@tonic-gate     if (krb5_ser_unpack_int32(&ibuf, &bp, &remain))
1787c478bd9Sstevel@tonic-gate 	ibuf = 0;
1797c478bd9Sstevel@tonic-gate     if (ibuf == KV5M_RCACHE) {
1807c478bd9Sstevel@tonic-gate 	kret = ENOMEM;
1817c478bd9Sstevel@tonic-gate 
1827c478bd9Sstevel@tonic-gate 	/* Get the length of the rcache name */
1837c478bd9Sstevel@tonic-gate 	kret = krb5_ser_unpack_int32(&ibuf, &bp, &remain);
1847c478bd9Sstevel@tonic-gate 
1857c478bd9Sstevel@tonic-gate 	if (!kret &&
1867c478bd9Sstevel@tonic-gate 	    (rcname = (char *) malloc((size_t) (ibuf+1))) &&
1877c478bd9Sstevel@tonic-gate 	    !(kret = krb5_ser_unpack_bytes((krb5_octet *) rcname,
1887c478bd9Sstevel@tonic-gate 					   (size_t) ibuf,
1897c478bd9Sstevel@tonic-gate 					   &bp, &remain))) {
1907c478bd9Sstevel@tonic-gate 	    rcname[ibuf] = '\0';
1917c478bd9Sstevel@tonic-gate 	    if (!(kret = krb5_rc_resolve_full(kcontext, &rcache, rcname))) {
1927c478bd9Sstevel@tonic-gate 		(void) krb5_rc_recover(kcontext, rcache);
193*55fea89dSDan Cross 		if (!kret &&
1947c478bd9Sstevel@tonic-gate 		    !(kret = krb5_ser_unpack_int32(&ibuf, &bp, &remain)) &&
1957c478bd9Sstevel@tonic-gate 		    (ibuf == KV5M_RCACHE)) {
1967c478bd9Sstevel@tonic-gate 		    *buffer = bp;
1977c478bd9Sstevel@tonic-gate 		    *lenremain = remain;
1987c478bd9Sstevel@tonic-gate 		    *argp = (krb5_pointer) rcache;
1997c478bd9Sstevel@tonic-gate 		}
200159d09a2SMark Phalan 		else /* Solaris Kerberos */
2017c478bd9Sstevel@tonic-gate 		    (void)krb5_rc_close(kcontext, rcache);
2027c478bd9Sstevel@tonic-gate 	    }
2037c478bd9Sstevel@tonic-gate 	    free(rcname);
2047c478bd9Sstevel@tonic-gate 	}
2057c478bd9Sstevel@tonic-gate     }
2067c478bd9Sstevel@tonic-gate     return(kret);
2077c478bd9Sstevel@tonic-gate }
2087c478bd9Sstevel@tonic-gate 
2097c478bd9Sstevel@tonic-gate /*
2107c478bd9Sstevel@tonic-gate  * Register the rcache serializer.
2117c478bd9Sstevel@tonic-gate  */
212505d05c7Sgtb krb5_error_code KRB5_CALLCONV
krb5_ser_rcache_init(krb5_context kcontext)213505d05c7Sgtb krb5_ser_rcache_init(krb5_context kcontext)
2147c478bd9Sstevel@tonic-gate {
2157c478bd9Sstevel@tonic-gate     return(krb5_register_serializer(kcontext, &krb5_rcache_ser_entry));
2167c478bd9Sstevel@tonic-gate }
217