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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 /*
     27  *  glue routine for gss_seal
     28  */
     29 
     30 #include <mechglueP.h>
     31 
     32 static OM_uint32
     33 val_seal_args(
     34 	OM_uint32 *minor_status,
     35 	gss_ctx_id_t context_handle,
     36 	gss_buffer_t input_message_buffer,
     37 	gss_buffer_t output_message_buffer)
     38 {
     39 
     40 	/* Initialize outputs. */
     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 	/* Validate arguments. */
     51 
     52 	if (minor_status == NULL)
     53 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
     54 
     55 	if (context_handle == GSS_C_NO_CONTEXT)
     56 		return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
     57 
     58 	if (input_message_buffer == GSS_C_NO_BUFFER)
     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 	return (GSS_S_COMPLETE);
     65 }
     66 
     67 /*ARGSUSED*/
     68 OM_uint32
     69 gss_seal(minor_status,
     70 		context_handle,
     71 		conf_req_flag,
     72 		qop_req,
     73 		input_message_buffer,
     74 		conf_state,
     75 		output_message_buffer)
     76 
     77 OM_uint32 *			minor_status;
     78 gss_ctx_id_t			context_handle;
     79 int				conf_req_flag;
     80 int				qop_req;
     81 gss_buffer_t			input_message_buffer;
     82 int *				conf_state;
     83 gss_buffer_t			output_message_buffer;
     84 {
     85 /* EXPORT DELETE START */
     86 
     87 	OM_uint32		status;
     88 	gss_union_ctx_id_t	ctx;
     89 	gss_mechanism		mech;
     90 
     91 	status = val_seal_args(minor_status,
     92 			context_handle,
     93 			input_message_buffer,
     94 			output_message_buffer);
     95 	if (status != GSS_S_COMPLETE)
     96 		return (status);
     97 
     98 	/*
     99 	 * select the approprate underlying mechanism routine and
    100 	 * call it.
    101 	 */
    102 
    103 	ctx = (gss_union_ctx_id_t) context_handle;
    104 	mech = __gss_get_mechanism(ctx->mech_type);
    105 
    106 	if (mech) {
    107 		if (mech->gss_seal)
    108 			status = mech->gss_seal(
    109 						mech->context,
    110 						minor_status,
    111 						ctx->internal_ctx_id,
    112 						conf_req_flag,
    113 						qop_req,
    114 						input_message_buffer,
    115 						conf_state,
    116 						output_message_buffer);
    117 		else
    118 			status = GSS_S_UNAVAILABLE;
    119 
    120 		return (status);
    121 	}
    122 /* EXPORT DELETE END */
    123 
    124 	return (GSS_S_BAD_MECH);
    125 }
    126 
    127 OM_uint32
    128 gss_wrap(minor_status,
    129 		context_handle,
    130 		conf_req_flag,
    131 		qop_req,
    132 		input_message_buffer,
    133 		conf_state,
    134 		output_message_buffer)
    135 
    136 OM_uint32 *			minor_status;
    137 const gss_ctx_id_t		context_handle;
    138 int				conf_req_flag;
    139 gss_qop_t			qop_req;
    140 const gss_buffer_t		input_message_buffer;
    141 int *				conf_state;
    142 gss_buffer_t			output_message_buffer;
    143 
    144 {
    145 	return gss_seal(minor_status, (gss_ctx_id_t)context_handle,
    146 			conf_req_flag, (int) qop_req,
    147 			(gss_buffer_t)input_message_buffer, conf_state,
    148 			output_message_buffer);
    149 }
    150 
    151 /*
    152  * New for V2
    153  */
    154 OM_uint32
    155 gss_wrap_size_limit(minor_status, context_handle, conf_req_flag,
    156 				qop_req, req_output_size, max_input_size)
    157 	OM_uint32		*minor_status;
    158 	const gss_ctx_id_t	context_handle;
    159 	int			conf_req_flag;
    160 	gss_qop_t		qop_req;
    161 	OM_uint32		req_output_size;
    162 	OM_uint32		*max_input_size;
    163 {
    164 	gss_union_ctx_id_t	ctx;
    165 	gss_mechanism		mech;
    166 
    167 	if (minor_status == NULL)
    168 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
    169 	*minor_status = 0;
    170 
    171 	if (context_handle == GSS_C_NO_CONTEXT)
    172 		return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
    173 
    174 	if (max_input_size == NULL)
    175 		return (GSS_S_CALL_INACCESSIBLE_WRITE);
    176 
    177 	/*
    178 	 * select the approprate underlying mechanism routine and
    179 	 * call it.
    180 	 */
    181 
    182 	ctx = (gss_union_ctx_id_t) context_handle;
    183 	mech = __gss_get_mechanism(ctx->mech_type);
    184 
    185 	if (!mech)
    186 		return (GSS_S_BAD_MECH);
    187 
    188 	if (!mech->gss_wrap_size_limit)
    189 		return (GSS_S_UNAVAILABLE);
    190 
    191 	return (mech->gss_wrap_size_limit(mech->context, minor_status,
    192 				ctx->internal_ctx_id, conf_req_flag, qop_req,
    193 				req_output_size, max_input_size));
    194 }
    195