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