/*
- * Copyright (c) 2010, JANET(UK)
+ * Copyright (c) 2011, JANET(UK)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* or implied warranty.
*/
+/*
+ * Message protection services: determine protected message size.
+ */
+
#include "gssapiP_eap.h"
#define INIT_IOV_DATA(_iov) do { (_iov)->buffer.value = NULL; \
gss_iov_buffer_t header, trailer, padding;
size_t dataLength, assocDataLength;
size_t gssHeaderLen, gssPadLen, gssTrailerLen;
- unsigned int krbHeaderLen = 0, krbTrailerLen = 0, krbPadLen = 0;
+ size_t krbHeaderLen = 0, krbTrailerLen = 0, krbPadLen = 0;
krb5_error_code code;
krb5_context krbContext;
int dce_style;
size_t ec;
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto = NULL;
+#endif
- if (qop_req != GSS_C_QOP_DEFAULT)
- return GSS_S_FAILURE;
+ if (qop_req != GSS_C_QOP_DEFAULT) {
+ *minor = GSSEAP_UNKNOWN_QOP;
+ return GSS_S_UNAVAILABLE;
+ }
- if (ctx->encryptionType == ENCTYPE_NULL)
+ if (ctx->encryptionType == ENCTYPE_NULL) {
+ *minor = GSSEAP_KEY_UNAVAILABLE;
return GSS_S_UNAVAILABLE;
+ }
GSSEAP_KRB_INIT(&krbContext);
header = gssEapLocateIov(iov, iov_count, GSS_IOV_BUFFER_TYPE_HEADER);
if (header == NULL) {
- *minor = EINVAL;
+ *minor = GSSEAP_MISSING_IOV;
return GSS_S_FAILURE;
}
INIT_IOV_DATA(header);
gssHeaderLen = gssPadLen = gssTrailerLen = 0;
- code = krb5_c_crypto_length(krbContext, ctx->encryptionType,
- conf_req_flag ?
+#ifdef HAVE_HEIMDAL_VERSION
+ code = krb5_crypto_init(krbContext, &ctx->rfc3961Key, ETYPE_NULL, &krbCrypto);
+ if (code != 0)
+ return code;
+#endif
+
+ code = krbCryptoLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ conf_req_flag ?
KRB5_CRYPTO_TYPE_TRAILER : KRB5_CRYPTO_TYPE_CHECKSUM,
- &krbTrailerLen);
+ &krbTrailerLen);
if (code != 0) {
*minor = code;
return GSS_S_FAILURE;
}
if (conf_req_flag) {
- code = krb5_c_crypto_length(krbContext, ctx->encryptionType,
- KRB5_CRYPTO_TYPE_HEADER, &krbHeaderLen);
+ code = krbCryptoLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ KRB5_CRYPTO_TYPE_HEADER, &krbHeaderLen);
if (code != 0) {
*minor = code;
return GSS_S_FAILURE;
gssHeaderLen += krbHeaderLen; /* Kerb-Header */
gssTrailerLen = 16 /* E(Header) */ + krbTrailerLen; /* Kerb-Trailer */
- code = krb5_c_padding_length(krbContext, ctx->encryptionType,
- dataLength - assocDataLength + 16 /* E(Header) */,
- &krbPadLen);
+ code = krbPaddingLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ dataLength - assocDataLength + 16 /* E(Header) */,
+ &krbPadLen);
if (code != 0) {
*minor = code;
return GSS_S_FAILURE;
if (krbPadLen == 0 && dce_style) {
/* Windows rejects AEAD tokens with non-zero EC */
- code = krb5_c_block_size(krbContext, ctx->encryptionType, &ec);
+ code = krbBlockSize(krbContext, KRB_CRYPTO_CONTEXT(ctx), &ec);
if (code != 0) {
*minor = code;
return GSS_S_FAILURE;
gss_iov_buffer_desc *iov,
int iov_count)
{
- return gssEapWrapIovLength(minor, ctx, conf_req_flag, qop_req,
- conf_state, iov, iov_count);
+ OM_uint32 major;
+
+ if (ctx == GSS_C_NO_CONTEXT) {
+ *minor = EINVAL;
+ return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT;
+ }
+
+ *minor = 0;
+
+ GSSEAP_MUTEX_LOCK(&ctx->mutex);
+
+ if (!CTX_IS_ESTABLISHED(ctx)) {
+ major = GSS_S_NO_CONTEXT;
+ *minor = GSSEAP_CONTEXT_INCOMPLETE;
+ goto cleanup;
+ }
+
+ major = gssEapWrapIovLength(minor, ctx, conf_req_flag, qop_req,
+ conf_state, iov, iov_count);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+cleanup:
+ GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
+
+ return major;
}