2 Copyright (c) 2004 The Regents of the University of Michigan.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
9 1. Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in the
13 documentation and/or other materials provided with the distribution.
14 3. Neither the name of the University nor the names of its
15 contributors may be used to endorse or promote products derived
16 from this software without specific prior written permission.
18 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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20 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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35 #include <gssapi/gssapi.h>
46 * Function: prepare_spkm3_ctx_buffer()
48 * Prepare spkm3 lucid context for the kernel
50 * buf->length should be:
59 * conf_alg 4 + oid_len
60 * d_conf_key 4 + key_len
61 * intg_alg 4 + oid_len
62 * d_intg_key 4 + key_len
67 prepare_spkm3_ctx_buffer(gss_spkm3_lucid_ctx_t *lctx, gss_buffer_desc *buf)
70 unsigned int buf_size = 0;
72 buf_size = sizeof(lctx->version) +
73 lctx->ctx_id.length + sizeof(lctx->ctx_id.length) +
74 sizeof(lctx->endtime) +
75 sizeof(lctx->mech_used.length) + lctx->mech_used.length +
76 sizeof(lctx->ret_flags) +
77 sizeof(lctx->conf_alg.length) + lctx->conf_alg.length +
78 sizeof(lctx->derived_conf_key.length) +
79 lctx->derived_conf_key.length +
80 sizeof(lctx->intg_alg.length) + lctx->intg_alg.length +
81 sizeof(lctx->derived_integ_key.length) +
82 lctx->derived_integ_key.length;
84 if (!(buf->value = calloc(1, buf_size)))
87 end = buf->value + buf_size;
89 if (WRITE_BYTES(&p, end, lctx->version))
91 printerr(2, "DEBUG: exporting version = %d\n", lctx->version);
93 if (write_buffer(&p, end, &lctx->ctx_id))
95 printerr(2, "DEBUG: exporting ctx_id(%d)\n", lctx->ctx_id.length);
97 if (WRITE_BYTES(&p, end, lctx->endtime))
99 printerr(2, "DEBUG: exporting endtime = %d\n", lctx->endtime);
101 if (write_buffer(&p, end, &lctx->mech_used))
103 printerr(2, "DEBUG: exporting mech oid (%d)\n", lctx->mech_used.length);
105 if (WRITE_BYTES(&p, end, lctx->ret_flags))
107 printerr(2, "DEBUG: exporting ret_flags = %d\n", lctx->ret_flags);
109 if (write_buffer(&p, end, &lctx->conf_alg))
111 printerr(2, "DEBUG: exporting conf_alg oid (%d)\n", lctx->conf_alg.length);
113 if (write_buffer(&p, end, &lctx->derived_conf_key))
115 printerr(2, "DEBUG: exporting conf key (%d)\n", lctx->derived_conf_key.length);
117 if (write_buffer(&p, end, &lctx->intg_alg))
119 printerr(2, "DEBUG: exporting intg_alg oid (%d)\n", lctx->intg_alg.length);
121 if (write_buffer(&p, end, &lctx->derived_integ_key))
123 printerr(2, "DEBUG: exporting intg key (%d)\n", lctx->derived_integ_key.length);
125 buf->length = p - (char *)buf->value;
128 printerr(0, "ERROR: failed serializing spkm3 context for kernel\n");
129 if (buf->value) free(buf->value);
135 /* ANDROS: need to determine which fields of the spkm3_gss_ctx_id_desc_t
136 * are needed in the kernel for get_mic, validate, wrap, unwrap, and destroy
137 * and only export those fields to the kernel.
140 serialize_spkm3_ctx(gss_ctx_id_t ctx, gss_buffer_desc *buf)
142 OM_uint32 vers, ret, maj_stat, min_stat;
144 gss_spkm3_lucid_ctx_t *lctx;
146 printerr(1, "serialize_spkm3_ctx called\n");
148 printerr(2, "DEBUG: serialize_spkm3_ctx: lucid version!\n");
149 maj_stat = gss_export_lucid_sec_context(&min_stat, &ctx, 1, &ret_ctx);
150 if (maj_stat != GSS_S_COMPLETE)
153 lctx = (gss_spkm3_lucid_ctx_t *)ret_ctx;
155 vers = lctx->version;
157 printerr(0, "ERROR: unsupported spkm3 context version %d\n",
161 ret = prepare_spkm3_ctx_buffer(lctx, buf);
163 maj_stat = gss_free_lucid_sec_context(&min_stat, ctx, ret_ctx);
165 if (maj_stat != GSS_S_COMPLETE)
166 printerr(0, "WARN: failed to free lucid sec context\n");
169 printerr(2, "DEBUG: serialize_spkm3_ctx: success\n");
173 printerr(2, "DEBUG: serialize_spkm3_ctx: failed\n");
176 #endif /* HAVE_SPKM3_H */