diff options
Diffstat (limited to 'source4/heimdal/lib/gssapi/mech/gss_aeap.c')
| -rw-r--r-- | source4/heimdal/lib/gssapi/mech/gss_aeap.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/source4/heimdal/lib/gssapi/mech/gss_aeap.c b/source4/heimdal/lib/gssapi/mech/gss_aeap.c new file mode 100644 index 0000000000..cbe0cd1460 --- /dev/null +++ b/source4/heimdal/lib/gssapi/mech/gss_aeap.c @@ -0,0 +1,184 @@ +/* + * AEAD support + */ + +#include "mech_locl.h" +RCSID("$Id$"); + +/** + * Encrypts or sign the data. + * + * The maximum packet size is gss_context_stream_sizes.max_msg_size. + * + * The caller needs provide the folloing buffers: + * + * - HEADER (of size gss_context_stream_sizes.header) + * SIGN_ONLY (optional, zero or more) + * DATA + * SIGN_ONLY (optional, zero or more) + * PADDING (of size gss_context_stream_sizes.blocksize) + * TRAILER (of size gss_context_stream_sizes.trailer) + * + * - on DCE-RPC mode, the caller can skip PADDING and TRAILER if the + * DATA elements is padded to a block bountry. + * + * To generate gss_wrap() compatible packets, use: HEADER | DATA | PADDING | TRAILER + * + * The input sizes of HEADER, PADDING and TRAILER can be fetched using gss_wrap_iov_length() or + * gss_context_query_attributes(). + * + * @ingroup gssapi + */ + + +OM_uint32 GSSAPI_LIB_FUNCTION +gss_wrap_iov(OM_uint32 * minor_status, + gss_ctx_id_t context_handle, + int conf_req_flag, + gss_qop_t qop_req, + int * conf_state, + gss_iov_buffer_desc *iov, + int iov_count) +{ + struct _gss_context *ctx = (struct _gss_context *) context_handle; + gssapi_mech_interface m; + + if (minor_status) + *minor_status = 0; + if (conf_state) + *conf_state = 0; + if (ctx == NULL) + return GSS_S_NO_CONTEXT; + if (iov == NULL && iov_count != 0) + return GSS_S_CALL_INACCESSIBLE_READ; + + m = ctx->gc_mech; + + if (m->gm_wrap_iov == NULL) { + if (minor_status) + *minor_status = 0; + return GSS_S_UNAVAILABLE; + } + + return (m->gm_wrap_iov)(minor_status, ctx->gc_ctx, + conf_req_flag, qop_req, conf_state, + iov, iov_count); +} + +OM_uint32 GSSAPI_LIB_FUNCTION +gss_unwrap_iov(OM_uint32 *minor_status, + gss_ctx_id_t context_handle, + int *conf_state, + gss_qop_t *qop_state, + gss_iov_buffer_desc *iov, + int iov_count) +{ + struct _gss_context *ctx = (struct _gss_context *) context_handle; + gssapi_mech_interface m; + + if (minor_status) + *minor_status = 0; + if (conf_state) + *conf_state = 0; + if (qop_state) + *qop_state = 0; + if (ctx == NULL) + return GSS_S_NO_CONTEXT; + if (iov == NULL && iov_count != 0) + return GSS_S_CALL_INACCESSIBLE_READ; + + m = ctx->gc_mech; + + if (m->gm_unwrap_iov == NULL) { + *minor_status = 0; + return GSS_S_UNAVAILABLE; + } + + return (m->gm_unwrap_iov)(minor_status, ctx->gc_ctx, + conf_state, qop_state, + iov, iov_count); +} + +OM_uint32 GSSAPI_LIB_FUNCTION +gss_wrap_iov_length(OM_uint32 * minor_status, + gss_ctx_id_t context_handle, + int conf_req_flag, + gss_qop_t qop_req, + int *conf_state, + gss_iov_buffer_desc *iov, + int iov_count) +{ + struct _gss_context *ctx = (struct _gss_context *) context_handle; + gssapi_mech_interface m; + + if (minor_status) + *minor_status = 0; + if (conf_state) + *conf_state = 0; + if (ctx == NULL) + return GSS_S_NO_CONTEXT; + if (iov == NULL && iov_count != 0) + return GSS_S_CALL_INACCESSIBLE_READ; + + m = ctx->gc_mech; + + if (m->gm_wrap_iov_length == NULL) { + *minor_status = 0; + return GSS_S_UNAVAILABLE; + } + + return (m->gm_wrap_iov_length)(minor_status, ctx->gc_ctx, + conf_req_flag, qop_req, conf_state, + iov, iov_count); +} + +OM_uint32 GSSAPI_LIB_FUNCTION +gss_release_iov_buffer(OM_uint32 *minor_status, + gss_iov_buffer_desc *iov, + int iov_count) +{ + OM_uint32 junk; + size_t i; + + if (minor_status) + *minor_status = 0; + if (iov == NULL && iov_count != 0) + return GSS_S_CALL_INACCESSIBLE_READ; + + for (i = 0; i < iov_count; i++) { + if (iov[i].type & GSS_IOV_BUFFER_TYPE_FLAG_ALLOCATED) + continue; + gss_release_buffer(&junk, &iov[i].buffer); + } + return GSS_S_COMPLETE; +} + +/** + * Query the context for parameters. + * + * SSPI equivalent if this function is QueryContextAttributes. + * + * - GSS_C_ATTR_STREAM_SIZES data is a gss_context_stream_sizes. + */ + +static gss_OID_desc gss_c_attr_stream_sizes_desc = + {10, rk_UNCONST("\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x03")}; + +gss_OID GSSAPI_LIB_VARIABLE GSS_C_ATTR_STREAM_SIZES = + &gss_c_attr_stream_sizes_desc; + +OM_uint32 GSSAPI_LIB_FUNCTION +gss_context_query_attributes(OM_uint32 *minor_status, + gss_OID attribute, + void *data, + size_t len) +{ + *minor_status = 0; + + if (gss_oid_equal(GSS_C_ATTR_STREAM_SIZES, attribute)) { + memset(data, 0, len); + return GSS_S_COMPLETE; + } + + return GSS_S_FAILURE; +} |