1 /*
2 * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "kcm_locl.h"
37
38 void
kcm_service(void * ctx,const heim_idata * req,const heim_icred cred,heim_ipc_complete complete,heim_sipc_call cctx)39 kcm_service(void *ctx, const heim_idata *req,
40 const heim_icred cred,
41 heim_ipc_complete complete,
42 heim_sipc_call cctx)
43 {
44 kcm_client peercred;
45 krb5_error_code ret;
46 krb5_data request, rep;
47 unsigned char *buf;
48 size_t len;
49
50 krb5_data_zero(&rep);
51
52 peercred.uid = heim_ipc_cred_get_uid(cred);
53 peercred.gid = heim_ipc_cred_get_gid(cred);
54 peercred.pid = heim_ipc_cred_get_pid(cred);
55 peercred.session = heim_ipc_cred_get_session(cred);
56
57 if (req->length < 4) {
58 kcm_log(1, "malformed request from process %d (too short)",
59 peercred.pid);
60 (*complete)(cctx, EINVAL, NULL);
61 return;
62 }
63
64 buf = req->data;
65 len = req->length;
66
67 if (buf[0] != KCM_PROTOCOL_VERSION_MAJOR ||
68 buf[1] != KCM_PROTOCOL_VERSION_MINOR) {
69 kcm_log(1, "incorrect protocol version %d.%d from process %d",
70 buf[0], buf[1], peercred.pid);
71 (*complete)(cctx, EINVAL, NULL);
72 return;
73 }
74
75 request.data = buf + 2;
76 request.length = len - 2;
77
78 /* buf is now pointing at opcode */
79
80 ret = kcm_dispatch(kcm_context, &peercred, &request, &rep);
81
82 (*complete)(cctx, ret, &rep);
83 krb5_data_free(&rep);
84 }
85