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
gss_unwrap(OM_uint32 * minor_status,gss_ctx_id_t context_handle,gss_buffer_t input_message_buffer,gss_buffer_t output_message_buffer,int * conf_state,gss_qop_t * qop_state)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
gss_unseal(OM_uint32 * minor_status,gss_ctx_id_t context_handle,gss_buffer_t input_message_buffer,gss_buffer_t output_message_buffer,int * conf_state,int * qop_state)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