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      1 /*	$NetBSD: misc.c,v 1.2 2017/01/28 21:31:49 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Kungliga Tekniska Hgskolan
      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 "krb5_locl.h"
     37 #ifdef HAVE_EXECINFO_H
     38 #include <execinfo.h>
     39 #endif
     40 
     41 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
     42 _krb5_s4u2self_to_checksumdata(krb5_context context,
     43 			       const PA_S4U2Self *self,
     44 			       krb5_data *data)
     45 {
     46     krb5_error_code ret;
     47     krb5_ssize_t ssize;
     48     krb5_storage *sp;
     49     size_t size;
     50     size_t i;
     51 
     52     sp = krb5_storage_emem();
     53     if (sp == NULL)
     54 	return krb5_enomem(context);
     55     krb5_storage_set_flags(sp, KRB5_STORAGE_BYTEORDER_LE);
     56     ret = krb5_store_int32(sp, self->name.name_type);
     57     if (ret) {
     58 	krb5_clear_error_message(context);
     59 	return ret;
     60     }
     61     for (i = 0; i < self->name.name_string.len; i++) {
     62 	size = strlen(self->name.name_string.val[i]);
     63 	ssize = krb5_storage_write(sp, self->name.name_string.val[i], size);
     64 	if (ssize != (krb5_ssize_t)size)
     65 	    return krb5_enomem(context);
     66     }
     67     size = strlen(self->realm);
     68     ssize = krb5_storage_write(sp, self->realm, size);
     69     if (ssize != (krb5_ssize_t)size)
     70 	return krb5_enomem(context);
     71     size = strlen(self->auth);
     72     ssize = krb5_storage_write(sp, self->auth, size);
     73     if (ssize != (krb5_ssize_t)size)
     74 	return krb5_enomem(context);
     75 
     76     ret = krb5_storage_to_data(sp, data);
     77     krb5_storage_free(sp);
     78     return ret;
     79 }
     80 
     81 KRB5_LIB_FUNCTION void KRB5_LIB_CALL
     82 _krb5_debug_backtrace(krb5_context context)
     83 {
     84 #if defined(HAVE_BACKTRACE) && defined(HAVE_BACKTRACE_SYMBOLS) && !defined(HEIMDAL_SMALLER)
     85     void *stack[128];
     86     char **strs = NULL;
     87     int i, frames = backtrace(stack, sizeof(stack) / sizeof(stack[0]));
     88     if (frames > 0)
     89 	strs = backtrace_symbols(stack, frames);
     90     if (strs) {
     91 	for (i = 0; i < frames; i++)
     92 	    _krb5_debug(context, 10, "frame %d: %s", i, strs[i]);
     93 	free(strs);
     94     }
     95 #endif
     96 }
     97 
     98 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
     99 _krb5_einval(krb5_context context, const char *func, unsigned long argn)
    100 {
    101 #ifndef HEIMDAL_SMALLER
    102     krb5_set_error_message(context, EINVAL,
    103 			   N_("programmer error: invalid argument to %s argument %lu",
    104 			      "function:line"),
    105 			   func, argn);
    106     if (_krb5_have_debug(context, 10)) {
    107 	_krb5_debug(context, 10, "invalid argument to function %s argument %lu",
    108 		    func, argn);
    109 	_krb5_debug_backtrace(context);
    110     }
    111 #endif
    112     return EINVAL;
    113 }
    114