diff options
Diffstat (limited to 'src/lib/gssapi/mechglue/g_unwrap_aead.c')
| -rw-r--r-- | src/lib/gssapi/mechglue/g_unwrap_aead.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/lib/gssapi/mechglue/g_unwrap_aead.c b/src/lib/gssapi/mechglue/g_unwrap_aead.c new file mode 100644 index 0000000..7dcc277 --- /dev/null +++ b/src/lib/gssapi/mechglue/g_unwrap_aead.c @@ -0,0 +1,198 @@ +/* #pragma ident "@(#)g_seal.c 1.19 98/04/21 SMI" */ + +/* + * Copyright 1996 by Sun Microsystems, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without fee, + * provided that the above copyright notice appears in all copies and + * that both that copyright notice and this permission notice appear in + * supporting documentation, and that the name of Sun Microsystems not be used + * in advertising or publicity pertaining to distribution of the software + * without specific, written prior permission. Sun Microsystems makes no + * representations about the suitability of this software for any + * purpose. It is provided "as is" without express or implied warranty. + * + * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF + * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * glue routine for gss_unwrap_aead + */ + +#include "mglueP.h" + +static OM_uint32 +val_unwrap_aead_args( + OM_uint32 *minor_status, + gss_ctx_id_t context_handle, + gss_buffer_t input_message_buffer, + gss_buffer_t input_assoc_buffer, + gss_buffer_t output_payload_buffer, + int *conf_state, + gss_qop_t *qop_state) +{ + + /* Initialize outputs. */ + + if (minor_status != NULL) + *minor_status = 0; + + /* Validate arguments. */ + + if (minor_status == NULL) + return (GSS_S_CALL_INACCESSIBLE_WRITE); + + if (context_handle == GSS_C_NO_CONTEXT) + return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT); + + if (input_message_buffer == GSS_C_NO_BUFFER) + return (GSS_S_CALL_INACCESSIBLE_READ); + + if (output_payload_buffer == GSS_C_NO_BUFFER) + return (GSS_S_CALL_INACCESSIBLE_WRITE); + + return (GSS_S_COMPLETE); +} + +static OM_uint32 +gssint_unwrap_aead_iov_shim(gss_mechanism mech, + OM_uint32 *minor_status, + gss_ctx_id_t context_handle, + gss_buffer_t input_message_buffer, + gss_buffer_t input_assoc_buffer, + gss_buffer_t output_payload_buffer, + int *conf_state, + gss_qop_t *qop_state) +{ + OM_uint32 status; + gss_iov_buffer_desc iov[3]; + int i = 0; + + iov[i].type = GSS_IOV_BUFFER_TYPE_STREAM; + iov[i].buffer = *input_message_buffer; + i++; + + if (input_assoc_buffer != NULL) { + iov[i].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY; + iov[i].buffer = *input_assoc_buffer; + i++; + } + + iov[i].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE; + iov[i].buffer.value = NULL; + iov[i].buffer.length = 0; + i++; + + assert(mech->gss_unwrap_iov); + + status = mech->gss_unwrap_iov(minor_status, context_handle, conf_state, + qop_state, iov, i); + if (status == GSS_S_COMPLETE) { + *output_payload_buffer = iov[i - 1].buffer; + } else { + OM_uint32 minor; + + map_error(minor_status, mech); + + if (iov[i - 1].type & GSS_IOV_BUFFER_FLAG_ALLOCATED) { + gss_release_buffer(&minor, &iov[i - 1].buffer); + iov[i - 1].type &= ~(GSS_IOV_BUFFER_FLAG_ALLOCATED); + } + } + + return status; +} + +OM_uint32 +gssint_unwrap_aead (gss_mechanism mech, + OM_uint32 *minor_status, + gss_union_ctx_id_t ctx, + gss_buffer_t input_message_buffer, + gss_buffer_t input_assoc_buffer, + gss_buffer_t output_payload_buffer, + int *conf_state, + gss_qop_t *qop_state) +{ + OM_uint32 status; + + assert(mech != NULL); + assert(ctx != NULL); + + /* EXPORT DELETE START */ + + if (mech->gss_unwrap_aead) { + status = mech->gss_unwrap_aead(minor_status, + ctx->internal_ctx_id, + input_message_buffer, + input_assoc_buffer, + output_payload_buffer, + conf_state, + qop_state); + if (status != GSS_S_COMPLETE) + map_error(minor_status, mech); + } else if (mech->gss_unwrap_iov) { + status = gssint_unwrap_aead_iov_shim(mech, + minor_status, + ctx->internal_ctx_id, + input_message_buffer, + input_assoc_buffer, + output_payload_buffer, + conf_state, + qop_state); + } else + status = GSS_S_UNAVAILABLE; + /* EXPORT DELETE END */ + + return (status); +} + +OM_uint32 KRB5_CALLCONV +gss_unwrap_aead (minor_status, + context_handle, + input_message_buffer, + input_assoc_buffer, + output_payload_buffer, + conf_state, + qop_state) +OM_uint32 * minor_status; +gss_ctx_id_t context_handle; +gss_buffer_t input_message_buffer; +gss_buffer_t input_assoc_buffer; +gss_buffer_t output_payload_buffer; +int *conf_state; +gss_qop_t *qop_state; +{ + + OM_uint32 status; + gss_union_ctx_id_t ctx; + gss_mechanism mech; + + status = val_unwrap_aead_args(minor_status, context_handle, + input_message_buffer, input_assoc_buffer, + output_payload_buffer, + conf_state, qop_state); + if (status != GSS_S_COMPLETE) + return (status); + + /* + * select the approprate underlying mechanism routine and + * call it. + */ + ctx = (gss_union_ctx_id_t) context_handle; + mech = gssint_get_mechanism (ctx->mech_type); + + if (!mech) + return (GSS_S_BAD_MECH); + + return gssint_unwrap_aead(mech, minor_status, context_handle, + input_message_buffer, input_assoc_buffer, + output_payload_buffer, conf_state, qop_state); +} + |