/*
- Copyright (c) 2004 The Regents of the University of Michigan.
+ Copyright (c) 2004-2006 The Regents of the University of Michigan.
All rights reserved.
Redistribution and use in source and binary forms, with or without
#include <stdio.h>
#include <syslog.h>
#include <string.h>
+#include <errno.h>
#include <gssapi/gssapi.h>
#include <rpc/rpc.h>
#include <rpc/auth_gss.h>
/* XXX argggg, there's gotta be a better way than just duplicating this
* whole struct. Unfortunately, this is in a "private" header file,
* so this is our best choice at this point :-/
- *
- * XXX Does this match the Heimdal definition? */
+ */
typedef struct _krb5_gss_ctx_id_rec {
unsigned int initiate : 1; /* nonzero if initiating, zero if accepting */
{
krb5_gss_ctx_id_t kctx = ((gss_union_ctx_id_t)ctx)->internal_ctx_id;
char *p, *end;
- static int constant_one = 1;
static int constant_zero = 0;
+ static int constant_one = 1;
+ static int constant_two = 2;
uint32_t word_seq_send;
+ u_int64_t seq_send_64bit;
+ uint32_t v2_flags = 0;
if (!(buf->value = calloc(1, MAX_CTX_LEN)))
goto out_err;
p = buf->value;
end = buf->value + MAX_CTX_LEN;
- if (kctx->initiate) {
- if (WRITE_BYTES(&p, end, constant_one)) goto out_err;
- }
- else {
- if (WRITE_BYTES(&p, end, constant_zero)) goto out_err;
- }
- if (kctx->seed_init) {
- if (WRITE_BYTES(&p, end, constant_one)) goto out_err;
- }
- else {
- if (WRITE_BYTES(&p, end, constant_zero)) goto out_err;
- }
- if (write_bytes(&p, end, &kctx->seed, sizeof(kctx->seed)))
+ switch (kctx->enc->enctype) {
+ case ENCTYPE_DES_CBC_CRC:
+ case ENCTYPE_DES_CBC_MD4:
+ case ENCTYPE_DES_CBC_MD5:
+ case ENCTYPE_DES_CBC_RAW:
+ /* Old format of context to the kernel */
+ if (kctx->initiate) {
+ if (WRITE_BYTES(&p, end, constant_one)) goto out_err;
+ }
+ else {
+ if (WRITE_BYTES(&p, end, constant_zero)) goto out_err;
+ }
+ if (kctx->seed_init) {
+ if (WRITE_BYTES(&p, end, constant_one)) goto out_err;
+ }
+ else {
+ if (WRITE_BYTES(&p, end, constant_zero)) goto out_err;
+ }
+ if (write_bytes(&p, end, &kctx->seed, sizeof(kctx->seed)))
+ goto out_err;
+ if (WRITE_BYTES(&p, end, kctx->signalg)) goto out_err;
+ if (WRITE_BYTES(&p, end, kctx->sealalg)) goto out_err;
+ if (WRITE_BYTES(&p, end, kctx->endtime)) goto out_err;
+ word_seq_send = kctx->seq_send;
+ if (WRITE_BYTES(&p, end, word_seq_send)) goto out_err;
+ if (write_oid(&p, end, kctx->mech_used)) goto out_err;
+
+ printerr(2, "serialize_krb5_ctx: serializing keys with "
+ "enctype %d and length %d\n",
+ kctx->enc->enctype, kctx->enc->length);
+
+ if (write_keyblock(&p, end, kctx->enc)) goto out_err;
+ if (write_keyblock(&p, end, kctx->seq)) goto out_err;
+ break;
+ case ENCTYPE_DES3_CBC_RAW:
+ case ENCTYPE_DES3_CBC_SHA1:
+ case ENCTYPE_ARCFOUR_HMAC:
+ case ENCTYPE_ARCFOUR_HMAC_EXP:
+ case ENCTYPE_AES128_CTS_HMAC_SHA1_96:
+ case ENCTYPE_AES256_CTS_HMAC_SHA1_96:
+ /* New format of context to the kernel */
+ /* u32 flags;
+ * #define KRB5_CTX_FLAG_INITIATOR 0x00000001
+ * #define KRB5_CTX_FLAG_CFX 0x00000002
+ * #define KRB5_CTX_FLAG_ACCEPTOR_SUBKEY 0x00000004
+ * s32 endtime;
+ * u64 seq_send;
+ * u32 enctype;
+ * rawkey data
+ */
+
+ if (kctx->initiate)
+ v2_flags |= KRB5_CTX_FLAG_INITIATOR;
+ if (kctx->proto == 1)
+ v2_flags |= KRB5_CTX_FLAG_CFX;
+ if (kctx->have_acceptor_subkey)
+ v2_flags |= KRB5_CTX_FLAG_ACCEPTOR_SUBKEY;
+ if (WRITE_BYTES(&p, end, v2_flags)) goto out_err;
+ if (WRITE_BYTES(&p, end, kctx->endtime)) goto out_err;
+
+ seq_send_64bit = kctx->seq_send;
+ if (WRITE_BYTES(&p, end, seq_send_64bit)) goto out_err;
+
+ if (kctx->have_acceptor_subkey) {
+ if (WRITE_BYTES(&p, end, kctx->acceptor_subkey->enctype))
+ goto out_err;
+ printerr(2, "serialize_krb5_ctx: serializing subkey "
+ "with enctype %d and size %d\n",
+ kctx->acceptor_subkey->enctype,
+ kctx->acceptor_subkey->length);
+
+ if (write_bytes(&p, end,
+ kctx->acceptor_subkey->contents,
+ kctx->acceptor_subkey->length))
+ goto out_err;
+ } else {
+ if (WRITE_BYTES(&p, end, kctx->enc->enctype))
+ goto out_err;
+ printerr(2, "serialize_krb5_ctx: serializing key "
+ "with enctype %d and size %d\n",
+ kctx->enc->enctype, kctx->enc->length);
+
+ if (write_bytes(&p, end, kctx->enc->contents,
+ kctx->enc->length))
+ goto out_err;
+ }
+ break;
+ default:
+ printerr(0, "ERROR: serialize_krb5_ctx: unsupported encryption "
+ "algorithm %d\n", kctx->enc->enctype);
goto out_err;
- if (WRITE_BYTES(&p, end, kctx->signalg)) goto out_err;
- if (WRITE_BYTES(&p, end, kctx->sealalg)) goto out_err;
- if (WRITE_BYTES(&p, end, kctx->endtime)) goto out_err;
- if (endtime)
- *endtime = kctx->endtime;
- word_seq_send = kctx->seq_send;
- if (WRITE_BYTES(&p, end, word_seq_send)) goto out_err;
- if (write_oid(&p, end, kctx->mech_used)) goto out_err;
-
- printerr(2, "serialize_krb5_ctx: serializing keys with "
- "enctype %d and length %d\n",
- kctx->enc->enctype, kctx->enc->length);
-
- if (write_keyblock(&p, end, kctx->enc)) goto out_err;
- if (write_keyblock(&p, end, kctx->seq)) goto out_err;
+ }
buf->length = p - (char *)buf->value;
return 0;
+
out_err:
printerr(0, "ERROR: failed serializing krb5 context for kernel\n");
- if (buf->value) free(buf->value);
+ if (buf->value) {
+ free(buf->value);
+ }
+ buf->value = NULL;
buf->length = 0;
return -1;
}
projects / nfs-utils.git / blobdiff