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
19 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
26 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <gssapi/gssapi.h>
37 #include <rpc/auth_gss.h>
48 * Function: prepare_spkm3_ctx_buffer()
50 * Prepare spkm3 lucid context for the kernel
52 * buf->length should be:
61 * conf_alg 4 + oid_len
62 * d_conf_key 4 + key_len
63 * intg_alg 4 + oid_len
64 * d_intg_key 4 + key_len
69 prepare_spkm3_ctx_buffer(gss_spkm3_lucid_ctx_t *lctx, gss_buffer_desc *buf)
72 unsigned int buf_size = 0;
74 buf_size = sizeof(lctx->version) +
75 lctx->ctx_id.length + sizeof(lctx->ctx_id.length) +
76 sizeof(lctx->endtime) +
77 sizeof(lctx->mech_used.length) + lctx->mech_used.length +
78 sizeof(lctx->ret_flags) +
79 sizeof(lctx->conf_alg.length) + lctx->conf_alg.length +
80 sizeof(lctx->derived_conf_key.length) +
81 lctx->derived_conf_key.length +
82 sizeof(lctx->intg_alg.length) + lctx->intg_alg.length +
83 sizeof(lctx->derived_integ_key.length) +
84 lctx->derived_integ_key.length;
86 if (!(buf->value = calloc(1, buf_size)))
89 end = buf->value + buf_size;
91 if (WRITE_BYTES(&p, end, lctx->version))
93 printerr(2, "DEBUG: exporting version = %d\n", lctx->version);
95 if (write_buffer(&p, end, &lctx->ctx_id))
97 printerr(2, "DEBUG: exporting ctx_id(%d)\n", lctx->ctx_id.length);
99 if (WRITE_BYTES(&p, end, lctx->endtime))
101 printerr(2, "DEBUG: exporting endtime = %d\n", lctx->endtime);
103 if (write_buffer(&p, end, &lctx->mech_used))
105 printerr(2, "DEBUG: exporting mech oid (%d)\n", lctx->mech_used.length);
107 if (WRITE_BYTES(&p, end, lctx->ret_flags))
109 printerr(2, "DEBUG: exporting ret_flags = %d\n", lctx->ret_flags);
111 if (write_buffer(&p, end, &lctx->conf_alg))
113 printerr(2, "DEBUG: exporting conf_alg oid (%d)\n", lctx->conf_alg.length);
115 if (write_buffer(&p, end, &lctx->derived_conf_key))
117 printerr(2, "DEBUG: exporting conf key (%d)\n", lctx->derived_conf_key.length);
119 if (write_buffer(&p, end, &lctx->intg_alg))
121 printerr(2, "DEBUG: exporting intg_alg oid (%d)\n", lctx->intg_alg.length);
123 if (write_buffer(&p, end, &lctx->derived_integ_key))
125 printerr(2, "DEBUG: exporting intg key (%d)\n", lctx->derived_integ_key.length);
127 buf->length = p - (char *)buf->value;
130 printerr(0, "ERROR: failed serializing spkm3 context for kernel\n");
131 if (buf->value) free(buf->value);
137 /* ANDROS: need to determine which fields of the spkm3_gss_ctx_id_desc_t
138 * are needed in the kernel for get_mic, validate, wrap, unwrap, and destroy
139 * and only export those fields to the kernel.
142 serialize_spkm3_ctx(gss_ctx_id_t ctx, gss_buffer_desc *buf)
144 OM_uint32 vers, ret, maj_stat, min_stat;
146 gss_spkm3_lucid_ctx_t *lctx;
148 printerr(1, "serialize_spkm3_ctx called\n");
150 printerr(2, "DEBUG: serialize_spkm3_ctx: lucid version!\n");
151 maj_stat = gss_export_lucid_sec_context(&min_stat, &ctx, 1, &ret_ctx);
152 if (maj_stat != GSS_S_COMPLETE)
155 lctx = (gss_spkm3_lucid_ctx_t *)ret_ctx;
157 vers = lctx->version;
159 printerr(0, "ERROR: unsupported spkm3 context version %d\n",
163 ret = prepare_spkm3_ctx_buffer(lctx, buf);
165 maj_stat = gss_free_lucid_sec_context(&min_stat, ctx, ret_ctx);
167 if (maj_stat != GSS_S_COMPLETE)
168 printerr(0, "WARN: failed to free lucid sec context\n");
171 printerr(2, "DEBUG: serialize_spkm3_ctx: success\n");
175 printerr(2, "DEBUG: serialize_spkm3_ctx: failed\n");
178 #endif /* HAVE_SPKM3_H */