export_sec_context.c [plain text]
#include "gsskrb5_locl.h"
OM_uint32
_gsskrb5_export_sec_context (
OM_uint32 * minor_status,
gss_ctx_id_t * context_handle,
gss_buffer_t interprocess_token
)
{
krb5_context context;
const gsskrb5_ctx ctx = (const gsskrb5_ctx) *context_handle;
krb5_storage *sp;
krb5_auth_context ac;
OM_uint32 ret = GSS_S_COMPLETE;
krb5_data data;
gss_buffer_desc buffer;
int flags;
OM_uint32 minor;
krb5_error_code kret;
GSSAPI_KRB5_INIT (&context);
HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
if (!(ctx->flags & GSS_C_TRANS_FLAG)) {
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
*minor_status = 0;
return GSS_S_UNAVAILABLE;
}
sp = krb5_storage_emem ();
if (sp == NULL) {
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
ac = ctx->auth_context;
flags = 0;
if (ac->local_address)
flags |= SC_LOCAL_ADDRESS;
if (ac->remote_address)
flags |= SC_REMOTE_ADDRESS;
if (ac->keyblock)
flags |= SC_KEYBLOCK;
if (ac->local_subkey)
flags |= SC_LOCAL_SUBKEY;
if (ac->remote_subkey)
flags |= SC_REMOTE_SUBKEY;
kret = krb5_store_int32 (sp, flags);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ac->flags);
if (kret) {
*minor_status = kret;
goto failure;
}
if (ac->local_address) {
kret = krb5_store_address (sp, *ac->local_address);
if (kret) {
*minor_status = kret;
goto failure;
}
}
if (ac->remote_address) {
kret = krb5_store_address (sp, *ac->remote_address);
if (kret) {
*minor_status = kret;
goto failure;
}
}
kret = krb5_store_int16 (sp, ac->local_port);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int16 (sp, ac->remote_port);
if (kret) {
*minor_status = kret;
goto failure;
}
if (ac->keyblock) {
kret = krb5_store_keyblock (sp, *ac->keyblock);
if (kret) {
*minor_status = kret;
goto failure;
}
}
if (ac->local_subkey) {
kret = krb5_store_keyblock (sp, *ac->local_subkey);
if (kret) {
*minor_status = kret;
goto failure;
}
}
if (ac->remote_subkey) {
kret = krb5_store_keyblock (sp, *ac->remote_subkey);
if (kret) {
*minor_status = kret;
goto failure;
}
}
kret = krb5_store_int32 (sp, ac->local_seqnumber);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ac->remote_seqnumber);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ac->keytype);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ac->cksumtype);
if (kret) {
*minor_status = kret;
goto failure;
}
ret = _gsskrb5_export_name (minor_status,
(gss_name_t)ctx->source, &buffer);
if (ret)
goto failure;
data.data = buffer.value;
data.length = buffer.length;
kret = krb5_store_data (sp, data);
_gsskrb5_release_buffer (&minor, &buffer);
if (kret) {
*minor_status = kret;
goto failure;
}
ret = _gsskrb5_export_name (minor_status,
(gss_name_t)ctx->target, &buffer);
if (ret)
goto failure;
data.data = buffer.value;
data.length = buffer.length;
ret = GSS_S_FAILURE;
kret = krb5_store_data (sp, data);
_gsskrb5_release_buffer (&minor, &buffer);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ctx->flags);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ctx->more_flags);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = krb5_store_int32 (sp, ctx->endtime);
if (kret) {
*minor_status = kret;
goto failure;
}
kret = _gssapi_msg_order_export(sp, ctx->gk5c.order);
if (kret ) {
*minor_status = kret;
goto failure;
}
kret = krb5_storage_to_data (sp, &data);
krb5_storage_free (sp);
if (kret) {
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
*minor_status = kret;
return GSS_S_FAILURE;
}
interprocess_token->length = data.length;
interprocess_token->value = data.data;
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
ret = _gsskrb5_delete_sec_context (minor_status, context_handle,
GSS_C_NO_BUFFER);
if (ret != GSS_S_COMPLETE)
_gsskrb5_release_buffer (NULL, interprocess_token);
*minor_status = 0;
return ret;
failure:
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
krb5_storage_free (sp);
return ret;
}