crypto/external/bsd/heimdal/dist/lib/roken/setprogname.c

   1 /*      $NetBSD: setprogname.c,v 1.1.1.1 2011/04/13 18:15:43 elric Exp $        */
   2
   3 /*
   4  * Copyright (c) 1995-2004 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * 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 <config.h>
  37
  38 #include <krb5/roken.h>
  39
  40 #ifndef HAVE___PROGNAME
  41 extern const char *__progname;
  42 #endif
  43
  44 #ifndef HAVE_SETPROGNAME
  45
  46 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
  47 setprogname(const char *argv0)
  48 {
  49
  50 #ifndef HAVE___PROGNAME
  51
  52     const char *p;
  53     if(argv0 == NULL)
  54         return;
  55     p = strrchr(argv0, '/');
  56
  57 #ifdef BACKSLASH_PATH_DELIM
  58     {
  59         const char * pb;
  60
  61         pb = strrchr((p != NULL)? p : argv0, '\\');
  62         if (pb != NULL)
  63             p = pb;
  64     }
  65 #endif
  66
  67     if(p == NULL)
  68         p = argv0;
  69     else
  70         p++;
  71
  72 #ifdef _WIN32
  73     {
  74         char * fn = strdup(p);
  75         char * ext;
  76
  77         strlwr(fn);
  78         ext = strrchr(fn, '.');
  79         if (ext != NULL && !strcmp(ext, ".exe"))
  80             *ext = '\0';
  81
  82         __progname = fn;
  83     }
  84 #else
  85
  86     __progname = p;
  87
  88 #endif
  89
  90 #endif  /* HAVE___PROGNAME */
  91 }
  92
  93 #endif /* HAVE_SETPROGNAME */