lib/krb5/misc.c

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