17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * lib/krb5/krb/ser_key.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
197c478bd9Sstevel@tonic-gate * permission. M.I.T. makes no representations about the suitability of
207c478bd9Sstevel@tonic-gate * this software for any purpose. It is provided "as is" without express
217c478bd9Sstevel@tonic-gate * or implied warranty.
227c478bd9Sstevel@tonic-gate *
237c478bd9Sstevel@tonic-gate */
247c478bd9Sstevel@tonic-gate
257c478bd9Sstevel@tonic-gate /*
267c478bd9Sstevel@tonic-gate * ser_key.c - Serialize a krb5_keyblock structure.
277c478bd9Sstevel@tonic-gate */
28159d09a2SMark Phalan #include "k5-int.h"
29159d09a2SMark Phalan #include "int-proto.h"
307c478bd9Sstevel@tonic-gate
317c478bd9Sstevel@tonic-gate /*
327c478bd9Sstevel@tonic-gate * Routines to deal with externalizing the krb5_keyblock:
337c478bd9Sstevel@tonic-gate * krb5_keyblock_size();
347c478bd9Sstevel@tonic-gate * krb5_keyblock_externalize();
357c478bd9Sstevel@tonic-gate * krb5_keyblock_internalize();
367c478bd9Sstevel@tonic-gate */
377c478bd9Sstevel@tonic-gate static krb5_error_code krb5_keyblock_size
38505d05c7Sgtb (krb5_context, krb5_pointer, size_t *);
397c478bd9Sstevel@tonic-gate static krb5_error_code krb5_keyblock_externalize
40505d05c7Sgtb (krb5_context, krb5_pointer, krb5_octet **, size_t *);
417c478bd9Sstevel@tonic-gate static krb5_error_code krb5_keyblock_internalize
42505d05c7Sgtb (krb5_context,krb5_pointer *, krb5_octet **, size_t *);
437c478bd9Sstevel@tonic-gate
447c478bd9Sstevel@tonic-gate /* Local data */
457c478bd9Sstevel@tonic-gate static const krb5_ser_entry krb5_keyblock_ser_entry = {
467c478bd9Sstevel@tonic-gate KV5M_KEYBLOCK, /* Type */
477c478bd9Sstevel@tonic-gate krb5_keyblock_size, /* Sizer routine */
487c478bd9Sstevel@tonic-gate krb5_keyblock_externalize, /* Externalize routine */
497c478bd9Sstevel@tonic-gate krb5_keyblock_internalize /* Internalize routine */
507c478bd9Sstevel@tonic-gate };
517c478bd9Sstevel@tonic-gate
527c478bd9Sstevel@tonic-gate /*
537c478bd9Sstevel@tonic-gate * krb5_keyblock_size() - Determine the size required to externalize
547c478bd9Sstevel@tonic-gate * the krb5_keyblock.
557c478bd9Sstevel@tonic-gate */
567c478bd9Sstevel@tonic-gate /*ARGSUSED*/
577c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_keyblock_size(krb5_context kcontext,krb5_pointer arg,size_t * sizep)58505d05c7Sgtb krb5_keyblock_size(krb5_context kcontext, krb5_pointer arg, size_t *sizep)
597c478bd9Sstevel@tonic-gate {
607c478bd9Sstevel@tonic-gate krb5_error_code kret;
617c478bd9Sstevel@tonic-gate krb5_keyblock *keyblock;
627c478bd9Sstevel@tonic-gate
637c478bd9Sstevel@tonic-gate /*
647c478bd9Sstevel@tonic-gate * krb5_keyblock requires:
657c478bd9Sstevel@tonic-gate * krb5_int32 for KV5M_KEYBLOCK
667c478bd9Sstevel@tonic-gate * krb5_int32 for enctype
677c478bd9Sstevel@tonic-gate * krb5_int32 for length
687c478bd9Sstevel@tonic-gate * keyblock->length for contents
697c478bd9Sstevel@tonic-gate * krb5_int32 for KV5M_KEYBLOCK
707c478bd9Sstevel@tonic-gate */
717c478bd9Sstevel@tonic-gate kret = EINVAL;
72159d09a2SMark Phalan /* Solaris Kerberos */
737c478bd9Sstevel@tonic-gate keyblock = (krb5_keyblock *) arg;
747c478bd9Sstevel@tonic-gate if (keyblock) {
757c478bd9Sstevel@tonic-gate *sizep += (sizeof(krb5_int32) +
767c478bd9Sstevel@tonic-gate sizeof(krb5_int32) +
777c478bd9Sstevel@tonic-gate sizeof(krb5_int32) +
787c478bd9Sstevel@tonic-gate sizeof(krb5_int32) +
797c478bd9Sstevel@tonic-gate sizeof(krb5_int32) +
807c478bd9Sstevel@tonic-gate (size_t) keyblock->length);
817c478bd9Sstevel@tonic-gate kret = 0;
827c478bd9Sstevel@tonic-gate }
837c478bd9Sstevel@tonic-gate return(kret);
847c478bd9Sstevel@tonic-gate }
857c478bd9Sstevel@tonic-gate
867c478bd9Sstevel@tonic-gate /*
877c478bd9Sstevel@tonic-gate * krb5_keyblock_externalize() - Externalize the krb5_keyblock.
887c478bd9Sstevel@tonic-gate */
897c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_keyblock_externalize(krb5_context kcontext,krb5_pointer arg,krb5_octet ** buffer,size_t * lenremain)90505d05c7Sgtb krb5_keyblock_externalize(krb5_context kcontext, krb5_pointer arg, krb5_octet **buffer, size_t *lenremain)
917c478bd9Sstevel@tonic-gate {
927c478bd9Sstevel@tonic-gate krb5_error_code kret;
937c478bd9Sstevel@tonic-gate krb5_keyblock *keyblock;
947c478bd9Sstevel@tonic-gate size_t required;
957c478bd9Sstevel@tonic-gate krb5_octet *bp;
967c478bd9Sstevel@tonic-gate size_t remain;
977c478bd9Sstevel@tonic-gate
987c478bd9Sstevel@tonic-gate required = 0;
997c478bd9Sstevel@tonic-gate bp = *buffer;
1007c478bd9Sstevel@tonic-gate remain = *lenremain;
1017c478bd9Sstevel@tonic-gate kret = EINVAL;
102159d09a2SMark Phalan /* Solaris Kerberos */
1037c478bd9Sstevel@tonic-gate keyblock = (krb5_keyblock *) arg;
1047c478bd9Sstevel@tonic-gate if (keyblock) {
1057c478bd9Sstevel@tonic-gate kret = ENOMEM;
1067c478bd9Sstevel@tonic-gate if (!krb5_keyblock_size(kcontext, arg, &required) &&
1077c478bd9Sstevel@tonic-gate (required <= remain)) {
1087c478bd9Sstevel@tonic-gate /* Our identifier */
1097c478bd9Sstevel@tonic-gate (void) krb5_ser_pack_int32(KV5M_KEYBLOCK, &bp, &remain);
110*55fea89dSDan Cross
1117c478bd9Sstevel@tonic-gate /* Our enctype */
1127c478bd9Sstevel@tonic-gate (void) krb5_ser_pack_int32((krb5_int32) keyblock->enctype,
1137c478bd9Sstevel@tonic-gate &bp, &remain);
1147c478bd9Sstevel@tonic-gate
1157c478bd9Sstevel@tonic-gate /* Our length */
1167c478bd9Sstevel@tonic-gate (void) krb5_ser_pack_int32((krb5_int32) keyblock->length,
1177c478bd9Sstevel@tonic-gate &bp, &remain);
1187c478bd9Sstevel@tonic-gate
1197c478bd9Sstevel@tonic-gate /* Our contents */
1207c478bd9Sstevel@tonic-gate (void) krb5_ser_pack_bytes(keyblock->contents,
1217c478bd9Sstevel@tonic-gate (size_t) keyblock->length,
1227c478bd9Sstevel@tonic-gate &bp, &remain);
1237c478bd9Sstevel@tonic-gate
1247c478bd9Sstevel@tonic-gate /* Finally, our trailer */
1257c478bd9Sstevel@tonic-gate (void) krb5_ser_pack_int32(KV5M_KEYBLOCK, &bp, &remain);
1267c478bd9Sstevel@tonic-gate
1277c478bd9Sstevel@tonic-gate kret = 0;
1287c478bd9Sstevel@tonic-gate *buffer = bp;
1297c478bd9Sstevel@tonic-gate *lenremain = remain;
1307c478bd9Sstevel@tonic-gate }
1317c478bd9Sstevel@tonic-gate }
1327c478bd9Sstevel@tonic-gate return(kret);
1337c478bd9Sstevel@tonic-gate }
1347c478bd9Sstevel@tonic-gate
1357c478bd9Sstevel@tonic-gate /*
1367c478bd9Sstevel@tonic-gate * krb5_keyblock_internalize() - Internalize the krb5_keyblock.
1377c478bd9Sstevel@tonic-gate */
1387c478bd9Sstevel@tonic-gate
1397c478bd9Sstevel@tonic-gate /*ARGSUSED*/
1407c478bd9Sstevel@tonic-gate static krb5_error_code
krb5_keyblock_internalize(krb5_context kcontext,krb5_pointer * argp,krb5_octet ** buffer,size_t * lenremain)141505d05c7Sgtb krb5_keyblock_internalize(krb5_context kcontext, krb5_pointer *argp, krb5_octet **buffer, size_t *lenremain)
1427c478bd9Sstevel@tonic-gate {
1437c478bd9Sstevel@tonic-gate krb5_error_code kret;
1447c478bd9Sstevel@tonic-gate krb5_keyblock *keyblock;
1457c478bd9Sstevel@tonic-gate krb5_int32 ibuf;
1467c478bd9Sstevel@tonic-gate krb5_octet *bp;
1477c478bd9Sstevel@tonic-gate size_t remain;
1487c478bd9Sstevel@tonic-gate
1497c478bd9Sstevel@tonic-gate bp = *buffer;
1507c478bd9Sstevel@tonic-gate remain = *lenremain;
1517c478bd9Sstevel@tonic-gate kret = EINVAL;
1527c478bd9Sstevel@tonic-gate /* Read our magic number */
1537c478bd9Sstevel@tonic-gate if (krb5_ser_unpack_int32(&ibuf, &bp, &remain))
1547c478bd9Sstevel@tonic-gate ibuf = 0;
1557c478bd9Sstevel@tonic-gate if (ibuf == KV5M_KEYBLOCK) {
1567c478bd9Sstevel@tonic-gate kret = ENOMEM;
1577c478bd9Sstevel@tonic-gate
1587c478bd9Sstevel@tonic-gate /* Get a keyblock */
1597c478bd9Sstevel@tonic-gate if ((remain >= (3*sizeof(krb5_int32))) &&
1607c478bd9Sstevel@tonic-gate (keyblock = (krb5_keyblock *) MALLOC(sizeof(krb5_keyblock)))) {
1617c478bd9Sstevel@tonic-gate (void) memset(keyblock, 0, sizeof(krb5_keyblock));
1627c478bd9Sstevel@tonic-gate
1637c478bd9Sstevel@tonic-gate /* Get the enctype */
1647c478bd9Sstevel@tonic-gate (void) krb5_ser_unpack_int32(&ibuf, &bp, &remain);
1657c478bd9Sstevel@tonic-gate keyblock->enctype = (krb5_enctype) ibuf;
1667c478bd9Sstevel@tonic-gate
1677c478bd9Sstevel@tonic-gate /* Get the length */
1687c478bd9Sstevel@tonic-gate (void) krb5_ser_unpack_int32(&ibuf, &bp, &remain);
1697c478bd9Sstevel@tonic-gate keyblock->length = (int) ibuf;
1707c478bd9Sstevel@tonic-gate
1717c478bd9Sstevel@tonic-gate /* Get the string */
172159d09a2SMark Phalan /* Solaris Kerberos */
1737c478bd9Sstevel@tonic-gate keyblock->contents = (krb5_octet *) MALLOC((size_t) (ibuf));
1747c478bd9Sstevel@tonic-gate if ((keyblock->contents)&&
1757c478bd9Sstevel@tonic-gate !(kret = krb5_ser_unpack_bytes(keyblock->contents,
1767c478bd9Sstevel@tonic-gate (size_t) ibuf,
1777c478bd9Sstevel@tonic-gate &bp, &remain))) {
1787c478bd9Sstevel@tonic-gate kret = krb5_ser_unpack_int32(&ibuf, &bp, &remain);
1797c478bd9Sstevel@tonic-gate if (!kret && (ibuf == KV5M_KEYBLOCK)) {
1807c478bd9Sstevel@tonic-gate kret = 0;
1817c478bd9Sstevel@tonic-gate *buffer = bp;
1827c478bd9Sstevel@tonic-gate *lenremain = remain;
1837c478bd9Sstevel@tonic-gate keyblock->magic = KV5M_KEYBLOCK;
1847c478bd9Sstevel@tonic-gate *argp = (krb5_pointer) keyblock;
1857c478bd9Sstevel@tonic-gate }
1867c478bd9Sstevel@tonic-gate else
1877c478bd9Sstevel@tonic-gate kret = EINVAL;
1887c478bd9Sstevel@tonic-gate }
1897c478bd9Sstevel@tonic-gate if (kret) {
1907c478bd9Sstevel@tonic-gate if (keyblock->contents)
1917c478bd9Sstevel@tonic-gate FREE(keyblock->contents, keyblock->length);
1927c478bd9Sstevel@tonic-gate FREE(keyblock, sizeof(krb5_keyblock));
1937c478bd9Sstevel@tonic-gate }
1947c478bd9Sstevel@tonic-gate }
1957c478bd9Sstevel@tonic-gate }
1967c478bd9Sstevel@tonic-gate return(kret);
1977c478bd9Sstevel@tonic-gate }
1987c478bd9Sstevel@tonic-gate
1997c478bd9Sstevel@tonic-gate /*
2007c478bd9Sstevel@tonic-gate * Register the keyblock serializer.
2017c478bd9Sstevel@tonic-gate */
2027c478bd9Sstevel@tonic-gate krb5_error_code
krb5_ser_keyblock_init(krb5_context kcontext)203505d05c7Sgtb krb5_ser_keyblock_init(krb5_context kcontext)
2047c478bd9Sstevel@tonic-gate {
2057c478bd9Sstevel@tonic-gate return(krb5_register_serializer(kcontext, &krb5_keyblock_ser_entry));
2067c478bd9Sstevel@tonic-gate }
207