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 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