17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * lib/krb5/krb/ser_addr.c
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * Copyright 1995 by the Massachusetts Institute of Technology.
57c478bd9Sstevel@tonic-gate  * All Rights Reserved.
67c478bd9Sstevel@tonic-gate  *
77c478bd9Sstevel@tonic-gate  * Export of this software from the United States of America may
87c478bd9Sstevel@tonic-gate  *   require a specific license from the United States Government.
97c478bd9Sstevel@tonic-gate  *   It is the responsibility of any person or organization contemplating
107c478bd9Sstevel@tonic-gate  *   export to obtain such a license before exporting.
117c478bd9Sstevel@tonic-gate  *
127c478bd9Sstevel@tonic-gate  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
137c478bd9Sstevel@tonic-gate  * distribute this software and its documentation for any purpose and
147c478bd9Sstevel@tonic-gate  * without fee is hereby granted, provided that the above copyright
157c478bd9Sstevel@tonic-gate  * notice appear in all copies and that both that copyright notice and
167c478bd9Sstevel@tonic-gate  * this permission notice appear in supporting documentation, and that
177c478bd9Sstevel@tonic-gate  * the name of M.I.T. not be used in advertising or publicity pertaining
187c478bd9Sstevel@tonic-gate  * to distribution of the software without specific, written prior
19159d09a2SMark Phalan  * permission.  Furthermore if you modify this software you must label
20159d09a2SMark Phalan  * your software as modified software and not distribute it in such a
21159d09a2SMark Phalan  * fashion that it might be confused with the original M.I.T. software.
22159d09a2SMark Phalan  * M.I.T. makes no representations about the suitability of
237c478bd9Sstevel@tonic-gate  * this software for any purpose.  It is provided "as is" without express
247c478bd9Sstevel@tonic-gate  * or implied warranty.
257c478bd9Sstevel@tonic-gate  *
267c478bd9Sstevel@tonic-gate  */
277c478bd9Sstevel@tonic-gate 
287c478bd9Sstevel@tonic-gate /*
297c478bd9Sstevel@tonic-gate  * ser_addr.c - Serialize a krb5_address structure.
307c478bd9Sstevel@tonic-gate  */
31159d09a2SMark Phalan #include "k5-int.h"
32159d09a2SMark Phalan #include "int-proto.h"
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate /*
357c478bd9Sstevel@tonic-gate  * Routines to deal with externalizing the krb5_address:
367c478bd9Sstevel@tonic-gate  *	krb5_address_size();
377c478bd9Sstevel@tonic-gate  *	krb5_address_externalize();
387c478bd9Sstevel@tonic-gate  *	krb5_address_internalize();
397c478bd9Sstevel@tonic-gate  */
407c478bd9Sstevel@tonic-gate static krb5_error_code krb5_address_size
41505d05c7Sgtb 	(krb5_context, krb5_pointer, size_t *);
427c478bd9Sstevel@tonic-gate static krb5_error_code krb5_address_externalize
43505d05c7Sgtb 	(krb5_context, krb5_pointer, krb5_octet **, size_t *);
447c478bd9Sstevel@tonic-gate static krb5_error_code krb5_address_internalize
45505d05c7Sgtb 	(krb5_context,krb5_pointer *, krb5_octet **, size_t *);
467c478bd9Sstevel@tonic-gate 
477c478bd9Sstevel@tonic-gate /* Local data */
487c478bd9Sstevel@tonic-gate static const krb5_ser_entry krb5_address_ser_entry = {
497c478bd9Sstevel@tonic-gate     KV5M_ADDRESS,			/* Type			*/
507c478bd9Sstevel@tonic-gate     krb5_address_size,		/* Sizer routine	*/
517c478bd9Sstevel@tonic-gate     krb5_address_externalize,		/* Externalize routine	*/
527c478bd9Sstevel@tonic-gate     krb5_address_internalize		/* Internalize routine	*/
537c478bd9Sstevel@tonic-gate };
547c478bd9Sstevel@tonic-gate 
557c478bd9Sstevel@tonic-gate /*
567c478bd9Sstevel@tonic-gate  * krb5_address_size()	- Determine the size required to externalize
577c478bd9Sstevel@tonic-gate  *				  the krb5_address.
587c478bd9Sstevel@tonic-gate  */
597c478bd9Sstevel@tonic-gate /*ARGSUSED*/
607c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_address_size(krb5_context kcontext,krb5_pointer arg,size_t * sizep)61505d05c7Sgtb krb5_address_size(krb5_context kcontext, krb5_pointer arg, size_t *sizep)
627c478bd9Sstevel@tonic-gate {
637c478bd9Sstevel@tonic-gate     krb5_error_code	kret;
647c478bd9Sstevel@tonic-gate     krb5_address	*address;
657c478bd9Sstevel@tonic-gate 
667c478bd9Sstevel@tonic-gate     /*
677c478bd9Sstevel@tonic-gate      * krb5_address requires:
687c478bd9Sstevel@tonic-gate      *	krb5_int32		for KV5M_ADDRESS
697c478bd9Sstevel@tonic-gate      *	krb5_int32		for addrtype
707c478bd9Sstevel@tonic-gate      *	krb5_int32		for length
717c478bd9Sstevel@tonic-gate      *	address->length		for contents
727c478bd9Sstevel@tonic-gate      *	krb5_int32		for KV5M_ADDRESS
737c478bd9Sstevel@tonic-gate      */
747c478bd9Sstevel@tonic-gate     kret = EINVAL;
75159d09a2SMark Phalan     /* Solaris Kerberos */
767c478bd9Sstevel@tonic-gate     address = (krb5_address *) arg;
777c478bd9Sstevel@tonic-gate     if (address) {
787c478bd9Sstevel@tonic-gate 	*sizep += (sizeof(krb5_int32) +
797c478bd9Sstevel@tonic-gate 		   sizeof(krb5_int32) +
807c478bd9Sstevel@tonic-gate 		   sizeof(krb5_int32) +
817c478bd9Sstevel@tonic-gate 		   sizeof(krb5_int32) +
827c478bd9Sstevel@tonic-gate 		   (size_t) address->length);
837c478bd9Sstevel@tonic-gate 	kret = 0;
847c478bd9Sstevel@tonic-gate     }
857c478bd9Sstevel@tonic-gate     return(kret);
867c478bd9Sstevel@tonic-gate }
877c478bd9Sstevel@tonic-gate 
887c478bd9Sstevel@tonic-gate /*
897c478bd9Sstevel@tonic-gate  * krb5_address_externalize()	- Externalize the krb5_address.
907c478bd9Sstevel@tonic-gate  */
917c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_address_externalize(krb5_context kcontext,krb5_pointer arg,krb5_octet ** buffer,size_t * lenremain)92505d05c7Sgtb krb5_address_externalize(krb5_context kcontext, krb5_pointer arg, krb5_octet **buffer, size_t *lenremain)
937c478bd9Sstevel@tonic-gate {
947c478bd9Sstevel@tonic-gate     krb5_error_code	kret;
957c478bd9Sstevel@tonic-gate     krb5_address	*address;
967c478bd9Sstevel@tonic-gate     size_t		required;
977c478bd9Sstevel@tonic-gate     krb5_octet		*bp;
987c478bd9Sstevel@tonic-gate     size_t		remain;
997c478bd9Sstevel@tonic-gate 
1007c478bd9Sstevel@tonic-gate     required = 0;
1017c478bd9Sstevel@tonic-gate     bp = *buffer;
1027c478bd9Sstevel@tonic-gate     remain = *lenremain;
1037c478bd9Sstevel@tonic-gate     kret = EINVAL;
104159d09a2SMark Phalan     /* Solaris Kerberos */
1057c478bd9Sstevel@tonic-gate     address = (krb5_address *) arg;
1067c478bd9Sstevel@tonic-gate     if (address) {
1077c478bd9Sstevel@tonic-gate 	kret = ENOMEM;
1087c478bd9Sstevel@tonic-gate 	if (!krb5_address_size(kcontext, arg, &required) &&
1097c478bd9Sstevel@tonic-gate 	    (required <= remain)) {
1107c478bd9Sstevel@tonic-gate 	    /* Our identifier */
1117c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_pack_int32(KV5M_ADDRESS, &bp, &remain);
112*55fea89dSDan Cross 
1137c478bd9Sstevel@tonic-gate 	    /* Our addrtype */
1147c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_pack_int32((krb5_int32) address->addrtype,
1157c478bd9Sstevel@tonic-gate 				       &bp, &remain);
1167c478bd9Sstevel@tonic-gate 
1177c478bd9Sstevel@tonic-gate 	    /* Our length */
1187c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_pack_int32((krb5_int32) address->length,
1197c478bd9Sstevel@tonic-gate 				       &bp, &remain);
1207c478bd9Sstevel@tonic-gate 
1217c478bd9Sstevel@tonic-gate 	    /* Our contents */
1227c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_pack_bytes(address->contents,
1237c478bd9Sstevel@tonic-gate 				       (size_t) address->length,
1247c478bd9Sstevel@tonic-gate 				       &bp, &remain);
1257c478bd9Sstevel@tonic-gate 
1267c478bd9Sstevel@tonic-gate 	    /* Finally, our trailer */
1277c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_pack_int32(KV5M_ADDRESS, &bp, &remain);
1287c478bd9Sstevel@tonic-gate 
1297c478bd9Sstevel@tonic-gate 	    kret = 0;
1307c478bd9Sstevel@tonic-gate 	    *buffer = bp;
1317c478bd9Sstevel@tonic-gate 	    *lenremain = remain;
1327c478bd9Sstevel@tonic-gate 	}
1337c478bd9Sstevel@tonic-gate     }
1347c478bd9Sstevel@tonic-gate     return(kret);
1357c478bd9Sstevel@tonic-gate }
1367c478bd9Sstevel@tonic-gate 
1377c478bd9Sstevel@tonic-gate /*
1387c478bd9Sstevel@tonic-gate  * krb5_address_internalize()	- Internalize the krb5_address.
1397c478bd9Sstevel@tonic-gate  */
1407c478bd9Sstevel@tonic-gate 
1417c478bd9Sstevel@tonic-gate /*ARGSUSED*/
1427c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_address_internalize(krb5_context kcontext,krb5_pointer * argp,krb5_octet ** buffer,size_t * lenremain)143505d05c7Sgtb krb5_address_internalize(krb5_context kcontext, krb5_pointer *argp, krb5_octet **buffer, size_t *lenremain)
1447c478bd9Sstevel@tonic-gate {
1457c478bd9Sstevel@tonic-gate     krb5_error_code	kret;
1467c478bd9Sstevel@tonic-gate     krb5_address	*address;
1477c478bd9Sstevel@tonic-gate     krb5_int32		ibuf;
1487c478bd9Sstevel@tonic-gate     krb5_octet		*bp;
1497c478bd9Sstevel@tonic-gate     size_t		remain;
1507c478bd9Sstevel@tonic-gate 
1517c478bd9Sstevel@tonic-gate     bp = *buffer;
1527c478bd9Sstevel@tonic-gate     remain = *lenremain;
1537c478bd9Sstevel@tonic-gate     kret = EINVAL;
1547c478bd9Sstevel@tonic-gate     /* Read our magic number */
1557c478bd9Sstevel@tonic-gate     if (krb5_ser_unpack_int32(&ibuf, &bp, &remain))
1567c478bd9Sstevel@tonic-gate 	ibuf = 0;
1577c478bd9Sstevel@tonic-gate     if (ibuf == KV5M_ADDRESS) {
1587c478bd9Sstevel@tonic-gate 	kret = ENOMEM;
1597c478bd9Sstevel@tonic-gate 
1607c478bd9Sstevel@tonic-gate 	/* Get a address */
1617c478bd9Sstevel@tonic-gate 	if ((remain >= (2*sizeof(krb5_int32))) &&
1627c478bd9Sstevel@tonic-gate 	    (address = (krb5_address *) MALLOC(sizeof(krb5_address)))) {
1637c478bd9Sstevel@tonic-gate 	    (void) memset(address, 0, sizeof(krb5_address));
1647c478bd9Sstevel@tonic-gate 
1657c478bd9Sstevel@tonic-gate 	    address->magic = KV5M_ADDRESS;
1667c478bd9Sstevel@tonic-gate 
1677c478bd9Sstevel@tonic-gate 	    /* Get the addrtype */
1687c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_unpack_int32(&ibuf, &bp, &remain);
1697c478bd9Sstevel@tonic-gate 	    address->addrtype = (krb5_addrtype) ibuf;
1707c478bd9Sstevel@tonic-gate 
1717c478bd9Sstevel@tonic-gate 	    /* Get the length */
1727c478bd9Sstevel@tonic-gate 	    (void) krb5_ser_unpack_int32(&ibuf, &bp, &remain);
1737c478bd9Sstevel@tonic-gate 	    address->length = (int) ibuf;
1747c478bd9Sstevel@tonic-gate 
1757c478bd9Sstevel@tonic-gate 	    /* Get the string */
176159d09a2SMark Phalan 	    /* Solaris Kerberos */
1777c478bd9Sstevel@tonic-gate 	    address->contents = (krb5_octet *) MALLOC((size_t) (ibuf));
1787c478bd9Sstevel@tonic-gate 	    if ((address->contents) &&
1797c478bd9Sstevel@tonic-gate 		!(kret = krb5_ser_unpack_bytes(address->contents,
1807c478bd9Sstevel@tonic-gate 					       (size_t) ibuf,
1817c478bd9Sstevel@tonic-gate 					       &bp, &remain))) {
1827c478bd9Sstevel@tonic-gate 		/* Get the trailer */
1837c478bd9Sstevel@tonic-gate 		if ((kret = krb5_ser_unpack_int32(&ibuf, &bp, &remain)))
1847c478bd9Sstevel@tonic-gate 		    ibuf = 0;
1857c478bd9Sstevel@tonic-gate 
1867c478bd9Sstevel@tonic-gate 		if (!kret && (ibuf == KV5M_ADDRESS)) {
1877c478bd9Sstevel@tonic-gate 		    address->magic = KV5M_ADDRESS;
1887c478bd9Sstevel@tonic-gate 		    *buffer = bp;
1897c478bd9Sstevel@tonic-gate 		    *lenremain = remain;
1907c478bd9Sstevel@tonic-gate 		    *argp = (krb5_pointer) address;
1917c478bd9Sstevel@tonic-gate 		}
1927c478bd9Sstevel@tonic-gate 		else
1937c478bd9Sstevel@tonic-gate 		    kret = EINVAL;
1947c478bd9Sstevel@tonic-gate 	    }
1957c478bd9Sstevel@tonic-gate 	    if (kret) {
1967c478bd9Sstevel@tonic-gate 		if (address->contents)
1977c478bd9Sstevel@tonic-gate 		    FREE(address->contents, address->length);
1987c478bd9Sstevel@tonic-gate 		FREE(address, sizeof (krb5_address));
1997c478bd9Sstevel@tonic-gate 	    }
2007c478bd9Sstevel@tonic-gate 	}
2017c478bd9Sstevel@tonic-gate     }
2027c478bd9Sstevel@tonic-gate     return(kret);
2037c478bd9Sstevel@tonic-gate }
2047c478bd9Sstevel@tonic-gate 
2057c478bd9Sstevel@tonic-gate /*
2067c478bd9Sstevel@tonic-gate  * Register the address serializer.
2077c478bd9Sstevel@tonic-gate  */
2087c478bd9Sstevel@tonic-gate krb5_error_code
krb5_ser_address_init(krb5_context kcontext)209505d05c7Sgtb krb5_ser_address_init(krb5_context kcontext)
2107c478bd9Sstevel@tonic-gate {
2117c478bd9Sstevel@tonic-gate     return(krb5_register_serializer(kcontext, &krb5_address_ser_entry));
2127c478bd9Sstevel@tonic-gate }
213