crypto/external/bsd/heimdal/dist/kcm/connect.c

   1 /*      $NetBSD: connect.c,v 1.1.1.2 2014/04/24 12:45:27 pettai Exp $   */
   2
   3 /*
   4  * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * 3. Neither the name of the Institute nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #include "kcm_locl.h"
  39
  40 void
  41 kcm_service(void *ctx, const heim_idata *req,
  42             const heim_icred cred,
  43             heim_ipc_complete complete,
  44             heim_sipc_call cctx)
  45 {
  46     kcm_client peercred;
  47     krb5_error_code ret;
  48     krb5_data request, rep;
  49     unsigned char *buf;
  50     size_t len;
  51
  52     krb5_data_zero(&rep);
  53
  54     peercred.uid = heim_ipc_cred_get_uid(cred);
  55     peercred.gid = heim_ipc_cred_get_gid(cred);
  56     peercred.pid = heim_ipc_cred_get_pid(cred);
  57     peercred.session = heim_ipc_cred_get_session(cred);
  58
  59     if (req->length < 4) {
  60         kcm_log(1, "malformed request from process %d (too short)",
  61                 peercred.pid);
  62         (*complete)(cctx, EINVAL, NULL);
  63         return;
  64     }
  65
  66     buf = req->data;
  67     len = req->length;
  68
  69     if (buf[0] != KCM_PROTOCOL_VERSION_MAJOR ||
  70         buf[1] != KCM_PROTOCOL_VERSION_MINOR) {
  71         kcm_log(1, "incorrect protocol version %d.%d from process %d",
  72                 buf[0], buf[1], peercred.pid);
  73         (*complete)(cctx, EINVAL, NULL);
  74         return;
  75     }
  76
  77     request.data = buf + 2;
  78     request.length = len - 2;
  79
  80     /* buf is now pointing at opcode */
  81
  82     ret = kcm_dispatch(kcm_context, &peercred, &request, &rep);
  83
  84     (*complete)(cctx, ret, &rep);
  85     krb5_data_free(&rep);
  86 }