1 /* #pragma ident "@(#)g_seal.c 1.19 98/04/21 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 for gss_unwrap_aead 27 */ 28 29 #include "mglueP.h" 30 31 static OM_uint32 32 val_unwrap_aead_args( 33 OM_uint32 *minor_status, 34 gss_ctx_id_t context_handle, 35 gss_buffer_t input_message_buffer, 36 gss_buffer_t input_assoc_buffer, 37 gss_buffer_t output_payload_buffer, 38 int *conf_state, 39 gss_qop_t *qop_state) 40 { 41 42 /* Initialize outputs. */ 43 44 if (minor_status != NULL) 45 *minor_status = 0; 46 47 /* Validate arguments. */ 48 49 if (minor_status == NULL) 50 return (GSS_S_CALL_INACCESSIBLE_WRITE); 51 52 if (context_handle == GSS_C_NO_CONTEXT) 53 return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT); 54 55 if (input_message_buffer == GSS_C_NO_BUFFER) 56 return (GSS_S_CALL_INACCESSIBLE_READ); 57 58 if (output_payload_buffer == GSS_C_NO_BUFFER) 59 return (GSS_S_CALL_INACCESSIBLE_WRITE); 60 61 return (GSS_S_COMPLETE); 62 } 63 64 static OM_uint32 65 gssint_unwrap_aead_iov_shim(gss_mechanism mech, 66 OM_uint32 *minor_status, 67 gss_ctx_id_t context_handle, 68 gss_buffer_t input_message_buffer, 69 gss_buffer_t input_assoc_buffer, 70 gss_buffer_t output_payload_buffer, 71 int *conf_state, 72 gss_qop_t *qop_state) 73 { 74 OM_uint32 status; 75 gss_iov_buffer_desc iov[3]; 76 int i = 0; 77 78 iov[i].type = GSS_IOV_BUFFER_TYPE_STREAM; 79 iov[i].buffer = *input_message_buffer; 80 i++; 81 82 if (input_assoc_buffer != NULL) { 83 iov[i].type = GSS_IOV_BUFFER_TYPE_SIGN_ONLY; 84 iov[i].buffer = *input_assoc_buffer; 85 i++; 86 } 87 88 iov[i].type = GSS_IOV_BUFFER_TYPE_DATA | GSS_IOV_BUFFER_FLAG_ALLOCATE; 89 iov[i].buffer.value = NULL; 90 iov[i].buffer.length = 0; 91 i++; 92 93 assert(mech->gss_unwrap_iov); 94 95 status = mech->gss_unwrap_iov(minor_status, context_handle, conf_state, 96 qop_state, iov, i); 97 if (status == GSS_S_COMPLETE) { 98 *output_payload_buffer = iov[i - 1].buffer; 99 } else { 100 OM_uint32 minor; 101 102 map_error(minor_status, mech); 103 104 if (iov[i - 1].type & GSS_IOV_BUFFER_FLAG_ALLOCATED) { 105 gss_release_buffer(&minor, &iov[i - 1].buffer); 106 iov[i - 1].type &= ~(GSS_IOV_BUFFER_FLAG_ALLOCATED); 107 } 108 } 109 110 return status; 111 } 112 113 OM_uint32 114 gssint_unwrap_aead (gss_mechanism mech, 115 OM_uint32 *minor_status, 116 gss_union_ctx_id_t ctx, 117 gss_buffer_t input_message_buffer, 118 gss_buffer_t input_assoc_buffer, 119 gss_buffer_t output_payload_buffer, 120 int *conf_state, 121 gss_qop_t *qop_state) 122 { 123 OM_uint32 status; 124 125 assert(mech != NULL); 126 assert(ctx != NULL); 127 128 /* EXPORT DELETE START */ 129 130 if (mech->gss_unwrap_aead) { 131 status = mech->gss_unwrap_aead(minor_status, 132 ctx->internal_ctx_id, 133 input_message_buffer, 134 input_assoc_buffer, 135 output_payload_buffer, 136 conf_state, 137 qop_state); 138 if (status != GSS_S_COMPLETE) 139 map_error(minor_status, mech); 140 } else if (mech->gss_unwrap_iov) { 141 status = gssint_unwrap_aead_iov_shim(mech, 142 minor_status, 143 ctx->internal_ctx_id, 144 input_message_buffer, 145 input_assoc_buffer, 146 output_payload_buffer, 147 conf_state, 148 qop_state); 149 } else 150 status = GSS_S_UNAVAILABLE; 151 /* EXPORT DELETE END */ 152 153 return (status); 154 } 155 156 OM_uint32 KRB5_CALLCONV 157 gss_unwrap_aead (minor_status, 158 context_handle, 159 input_message_buffer, 160 input_assoc_buffer, 161 output_payload_buffer, 162 conf_state, 163 qop_state) 164 OM_uint32 * minor_status; 165 gss_ctx_id_t context_handle; 166 gss_buffer_t input_message_buffer; 167 gss_buffer_t input_assoc_buffer; 168 gss_buffer_t output_payload_buffer; 169 int *conf_state; 170 gss_qop_t *qop_state; 171 { 172 173 OM_uint32 status; 174 gss_union_ctx_id_t ctx; 175 gss_mechanism mech; 176 177 status = val_unwrap_aead_args(minor_status, context_handle, 178 input_message_buffer, input_assoc_buffer, 179 output_payload_buffer, 180 conf_state, qop_state); 181 if (status != GSS_S_COMPLETE) 182 return (status); 183 184 /* 185 * select the approprate underlying mechanism routine and 186 * call it. 187 */ 188 ctx = (gss_union_ctx_id_t) context_handle; 189 if (ctx->internal_ctx_id == GSS_C_NO_CONTEXT) 190 return (GSS_S_NO_CONTEXT); 191 mech = gssint_get_mechanism (ctx->mech_type); 192 193 if (!mech) 194 return (GSS_S_BAD_MECH); 195 196 return gssint_unwrap_aead(mech, minor_status, ctx, 197 input_message_buffer, input_assoc_buffer, 198 output_payload_buffer, conf_state, qop_state); 199 } 200