kcm/main.c

   1 /*
   2  * Copyright (c) 1997-2002 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kcm_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 sig_atomic_t exit_flag = 0;
  39
  40 krb5_context kcm_context = NULL;
  41
  42 static RETSIGTYPE
  43 sigterm(int sig)
  44 {
  45     exit_flag = 1;
  46 }
  47
  48 static RETSIGTYPE
  49 sigusr1(int sig)
  50 {
  51     kcm_debug_ccache(kcm_context);
  52 }
  53
  54 static RETSIGTYPE
  55 sigusr2(int sig)
  56 {
  57     kcm_debug_events(kcm_context);
  58 }
  59
  60 int
  61 main(int argc, char **argv)
  62 {
  63     krb5_error_code ret;
  64     setprogname(argv[0]);
  65
  66     ret = krb5_init_context(&kcm_context);
  67     if (ret) {
  68         errx (1, "krb5_init_context failed: %d", ret);
  69         return ret;
  70     }
  71
  72     kcm_configure(argc, argv);
  73
  74 #ifdef HAVE_SIGACTION
  75     {
  76         struct sigaction sa;
  77
  78         sa.sa_flags = 0;
  79         sa.sa_handler = sigterm;
  80         sigemptyset(&sa.sa_mask);
  81
  82         sigaction(SIGINT, &sa, NULL);
  83         sigaction(SIGTERM, &sa, NULL);
  84
  85         sa.sa_handler = sigusr1;
  86         sigaction(SIGUSR1, &sa, NULL);
  87
  88         sa.sa_handler = sigusr2;
  89         sigaction(SIGUSR2, &sa, NULL);
  90
  91         sa.sa_handler = SIG_IGN;
  92         sigaction(SIGPIPE, &sa, NULL);
  93     }
  94 #else
  95     signal(SIGINT, sigterm);
  96     signal(SIGTERM, sigterm);
  97     signal(SIGUSR1, sigusr1);
  98     signal(SIGUSR2, sigusr2);
  99     signal(SIGPIPE, SIG_IGN);
 100 #endif
 101 #ifdef SUPPORT_DETACH
 102     if (detach_from_console)
 103         daemon(0, 0);
 104 #endif
 105     pidfile(NULL);
 106     kcm_loop();
 107     krb5_free_context(kcm_context);
 108     return 0;
 109 }