source4/heimdal/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         krb5_clear_error_message(context);
  53         return ENOMEM;
  54     }
  55     krb5_storage_set_flags(sp, KRB5_STORAGE_BYTEORDER_LE);
  56     ret = krb5_store_int32(sp, self->name.name_type);
  57     if (ret)
  58         goto out;
  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             ret = ENOMEM;
  64             goto out;
  65         }
  66     }
  67     size = strlen(self->realm);
  68     ssize = krb5_storage_write(sp, self->realm, size);
  69     if (ssize != (krb5_ssize_t)size) {
  70         ret = ENOMEM;
  71         goto out;
  72     }
  73     size = strlen(self->auth);
  74     ssize = krb5_storage_write(sp, self->auth, size);
  75     if (ssize != (krb5_ssize_t)size) {
  76         ret = ENOMEM;
  77         goto out;
  78     }
  79
  80     ret = krb5_storage_to_data(sp, data);
  81     krb5_storage_free(sp);
  82     return ret;
  83
  84 out:
  85     krb5_clear_error_message(context);
  86     return ret;
  87 }
  88
  89 krb5_error_code
  90 krb5_enomem(krb5_context context)
  91 {
  92     krb5_set_error_message(context, ENOMEM, N_("malloc: out of memory", ""));
  93     return ENOMEM;
  94 }
  95
  96 void
  97 _krb5_debug_backtrace(krb5_context context)
  98 {
  99 #if defined(HAVE_BACKTRACE) && defined(HAVE_BACKTRACE_SYMBOLS) && !defined(HEIMDAL_SMALLER)
 100     void *stack[128];
 101     char **strs = NULL;
 102     int i, frames = backtrace(stack, sizeof(stack) / sizeof(stack[0]));
 103     if (frames > 0)
 104         strs = backtrace_symbols(stack, frames);
 105     if (strs) {
 106         for (i = 0; i < frames; i++)
 107             _krb5_debug(context, 10, "frame %d: %s", i, strs[i]);
 108         free(strs);
 109     }
 110 #endif
 111 }
 112
 113 krb5_error_code
 114 _krb5_einval(krb5_context context, const char *func, unsigned long argn)
 115 {
 116 #ifndef HEIMDAL_SMALLER
 117     krb5_set_error_message(context, EINVAL,
 118                            N_("programmer error: invalid argument to %s argument %lu",
 119                               "function:line"),
 120                            func, argn);
 121     if (_krb5_have_debug(context, 10)) {
 122         _krb5_debug(context, 10, "invalid argument to function %s argument %lu",
 123                     func, argn);
 124         _krb5_debug_backtrace(context);
 125     }
 126 #endif
 127     return EINVAL;
 128 }