1 /* #pragma ident "@(#)g_unseal.c 1.13 98/01/22 SMI" */ 2 3 /* 4 * Copyright 1996 by Sun Microsystems, Inc. 5 * 6 * Permission to use, copy, modify, distribute, and sell this software 7 * and its documentation for any purpose is hereby granted without fee, 8 * provided that the above copyright notice appears in all copies and 9 * that both that copyright notice and this permission notice appear in 10 * supporting documentation, and that the name of Sun Microsystems not be used 11 * in advertising or publicity pertaining to distribution of the software 12 * without specific, written prior permission. Sun Microsystems makes no 13 * representations about the suitability of this software for any 14 * purpose. It is provided "as is" without express or implied warranty. 15 * 16 * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 18 * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF 20 * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR 21 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 22 * PERFORMANCE OF THIS SOFTWARE. 23 */ 24 25 /* 26 * glue routine gss_unwrap 27 */ 28 29 #include "mglueP.h" 30 31 OM_uint32 KRB5_CALLCONV 32 gss_unwrap(OM_uint32 * minor_status, gss_ctx_id_t context_handle, 33 gss_buffer_t input_message_buffer, 34 gss_buffer_t output_message_buffer, 35 int *conf_state, gss_qop_t *qop_state) 36 { 37 /* EXPORT DELETE START */ 38 OM_uint32 status; 39 gss_union_ctx_id_t ctx; 40 gss_mechanism mech; 41 42 if (minor_status != NULL) 43 *minor_status = 0; 44 45 if (output_message_buffer != GSS_C_NO_BUFFER) { 46 output_message_buffer->length = 0; 47 output_message_buffer->value = NULL; 48 } 49 50 if (minor_status == NULL) 51 return (GSS_S_CALL_INACCESSIBLE_WRITE); 52 53 if (context_handle == GSS_C_NO_CONTEXT) 54 return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT); 55 56 if (input_message_buffer == GSS_C_NO_BUFFER || 57 GSS_EMPTY_BUFFER(input_message_buffer)) 58 59 return (GSS_S_CALL_INACCESSIBLE_READ); 60 61 if (output_message_buffer == GSS_C_NO_BUFFER) 62 return (GSS_S_CALL_INACCESSIBLE_WRITE); 63 64 /* 65 * select the approprate underlying mechanism routine and 66 * call it. 67 */ 68 ctx = (gss_union_ctx_id_t) context_handle; 69 if (ctx->internal_ctx_id == GSS_C_NO_CONTEXT) 70 return (GSS_S_NO_CONTEXT); 71 mech = gssint_get_mechanism (ctx->mech_type); 72 73 if (mech) { 74 if (mech->gss_unwrap) { 75 status = mech->gss_unwrap(minor_status, 76 ctx->internal_ctx_id, 77 input_message_buffer, 78 output_message_buffer, 79 conf_state, 80 qop_state); 81 if (status != GSS_S_COMPLETE) 82 map_error(minor_status, mech); 83 } else if (mech->gss_unwrap_aead || mech->gss_unwrap_iov) { 84 status = gssint_unwrap_aead(mech, 85 minor_status, 86 ctx, 87 input_message_buffer, 88 GSS_C_NO_BUFFER, 89 output_message_buffer, 90 conf_state, 91 (gss_qop_t *)qop_state); 92 } else 93 status = GSS_S_UNAVAILABLE; 94 95 return(status); 96 } 97 98 /* EXPORT DELETE END */ 99 100 return (GSS_S_BAD_MECH); 101 } 102 103 OM_uint32 KRB5_CALLCONV 104 gss_unseal(OM_uint32 *minor_status, gss_ctx_id_t context_handle, 105 gss_buffer_t input_message_buffer, 106 gss_buffer_t output_message_buffer, int *conf_state, int *qop_state) 107 { 108 return (gss_unwrap(minor_status, context_handle, 109 input_message_buffer, 110 output_message_buffer, conf_state, (gss_qop_t *) qop_state)); 111 } 112