common/safety.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
   6  *
   7  **************************************************************************
   8  * This file contains "safe" memory and string helpers (obsolete)
   9  **************************************************************************
  10  *
  11  * LADI Session Handler is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * LADI Session Handler is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  23  * or write to the Free Software Foundation, Inc.,
  24  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 /* For strdup() */
  28 #ifndef _BSD_SOURCE
  29 # define _BSD_SOURCE 1
  30 #endif
  31
  32 #include <stdint.h>
  33 #include <string.h>
  34
  35 #include "safety.h"
  36 #include "debug.h"
  37
  38 void
  39 _lash_free(void **ptr)
  40 {
  41   if (ptr && *ptr) {
  42     free(*ptr);
  43     *ptr = NULL;
  44   }
  45 }
  46
  47 void
  48 lash_strset(char       **property,
  49             const char  *value)
  50 {
  51   if (property) {
  52     if (*property)
  53       free(*property);
  54
  55     if (value)
  56       *property = lash_strdup(value);
  57     else
  58       *property = NULL;
  59   }
  60 }
  61
  62 #ifndef LASH_DEBUG
  63
  64 void *
  65 lash_malloc(size_t nmemb,
  66             size_t size)
  67 {
  68   void *ptr = NULL;
  69
  70   if (nmemb && size) {
  71     if (size <= (SIZE_MAX / nmemb)) {
  72       if ((ptr = malloc(nmemb * size))) {
  73         return ptr;
  74       } else {
  75         lash_error("malloc returned NULL");
  76       }
  77     } else {
  78       lash_error("Arguments would overflow");
  79     }
  80   } else {
  81     lash_error("Can't allocate zero bytes");
  82   }
  83
  84   abort();
  85 }
  86
  87 void *
  88 lash_calloc(size_t nmemb,
  89             size_t size)
  90 {
  91   void *ptr = NULL;
  92
  93   if (nmemb && size) {
  94     if (size <= (SIZE_MAX / nmemb)) {
  95       if ((ptr = calloc(nmemb, size))) {
  96         return ptr;
  97       } else {
  98         lash_error("calloc returned NULL");
  99       }
 100     } else {
 101       lash_error("Arguments would overflow");
 102     }
 103   } else {
 104     lash_error("Can't allocate zero bytes");
 105   }
 106
 107   abort();
 108 }
 109
 110 void *
 111 lash_realloc(void   *ptr,
 112              size_t  nmemb,
 113              size_t  size)
 114 {
 115   void *ptr2 = NULL;
 116
 117   if (nmemb && size) {
 118     if (size <= (SIZE_MAX / nmemb)) {
 119       if ((ptr2 = realloc(ptr, nmemb * size))) {
 120         return ptr2;
 121       } else {
 122         lash_error("realloc returned NULL");
 123       }
 124     } else {
 125       lash_error("Arguments would overflow");
 126     }
 127   } else {
 128     lash_error("Can't allocate zero bytes");
 129   }
 130
 131   abort();
 132 }
 133
 134 char *
 135 lash_strdup(const char *s)
 136 {
 137   char *ptr = (s) ? strdup(s) : strdup("");
 138
 139   if (ptr)
 140     return ptr;
 141
 142   lash_error("strdup returned NULL");
 143
 144   abort();
 145 }
 146
 147 #else /* LASH_DEBUG */
 148
 149 void *
 150 lash_malloc_dbg(size_t      nmemb,
 151                 size_t      size,
 152                 const char *file,
 153                 int         line,
 154                 const char *function,
 155                 const char *arg1,
 156                 const char *arg2)
 157 {
 158   void *ptr = NULL;
 159
 160   if (nmemb && size) {
 161     if (size <= (SIZE_MAX / nmemb)) {
 162       if ((ptr = malloc(nmemb * size))) {
 163         return ptr;
 164       } else {
 165         lash_error_plain("%s:%d:%s: "
 166                          "lash_malloc(%s,%s) failed: "
 167                          "malloc returned NULL",
 168                          file, line, function,
 169                          arg1, arg2);
 170       }
 171     } else {
 172       lash_error_plain("%s:%d:%s: "
 173                        "lash_malloc(%s,%s) failed: "
 174                        "Arguments would overflow",
 175                        file, line, function, arg1, arg2);
 176     }
 177   } else {
 178     lash_error_plain("%s:%d:%s: "
 179                      "lash_malloc(%s,%s) failed: "
 180                      "Can't allocate zero bytes",
 181                      file, line, function, arg1, arg2);
 182   }
 183
 184   abort();
 185 }
 186
 187 void *
 188 lash_calloc_dbg(size_t      nmemb,
 189                 size_t      size,
 190                 const char *file,
 191                 int         line,
 192                 const char *function,
 193                 const char *arg1,
 194                 const char *arg2)
 195 {
 196   void *ptr = NULL;
 197
 198   if (nmemb && size) {
 199     if (size <= (SIZE_MAX / nmemb)) {
 200       if ((ptr = calloc(nmemb, size))) {
 201         return ptr;
 202       } else {
 203         lash_error_plain("%s:%d:%s: "
 204                          "lash_calloc(%s,%s) failed: "
 205                          "calloc returned NULL",
 206                          file, line, function,
 207                          arg1, arg2);
 208       }
 209     } else {
 210       lash_error_plain("%s:%d:%s: "
 211                        "lash_calloc(%s,%s) failed: "
 212                        "Arguments would overflow",
 213                        file, line, function, arg1, arg2);
 214     }
 215   } else {
 216     lash_error_plain("%s:%d:%s: "
 217                      "lash_calloc(%s,%s) failed: "
 218                      "Can't allocate zero bytes",
 219                      file, line, function, arg1, arg2);
 220   }
 221
 222   abort();
 223 }
 224
 225 void *
 226 lash_realloc_dbg(void       *ptr,
 227                  size_t      nmemb,
 228                  size_t      size,
 229                  const char *file,
 230                  int         line,
 231                  const char *function,
 232                  const char *arg1,
 233                  const char *arg2,
 234                  const char *arg3)
 235 {
 236   void *ptr2 = NULL;
 237
 238   if (nmemb && size) {
 239     if (size <= (SIZE_MAX / nmemb)) {
 240       if ((ptr2 = realloc(ptr, nmemb * size))) {
 241         return ptr2;
 242       } else {
 243         lash_error_plain("%s:%d:%s: "
 244                          "lash_realloc(%s,%s,%s) failed: "
 245                          "calloc returned NULL",
 246                          file, line, function,
 247                          arg1, arg2, arg3);
 248       }
 249     } else {
 250       lash_error_plain("%s:%d:%s: "
 251                        "lash_realloc(%s,%s,%s) failed: "
 252                        "Arguments would overflow",
 253                        file, line, function, arg1, arg2, arg3);
 254     }
 255   } else {
 256     lash_error_plain("%s:%d:%s: "
 257                      "lash_realloc(%s,%s,%s) failed: "
 258                      "Can't allocate zero bytes",
 259                      file, line, function, arg1, arg2, arg3);
 260   }
 261
 262   abort();
 263 }
 264
 265 char *
 266 lash_strdup_dbg(const char *s,
 267                 const char *file,
 268                 int         line,
 269                 const char *function,
 270                 const char *arg1)
 271 {
 272   char *ptr;
 273
 274   if (s) {
 275     ptr = strdup(s);
 276   } else {
 277     lash_error_plain("%s:%d:%s: lash_strdup(%s) failed: "
 278                      "Argument is NULL",
 279                      file, line, function, arg1);
 280     ptr = strdup("");
 281   }
 282
 283   if (ptr)
 284     return ptr;
 285
 286   lash_error_plain("%s:%d:%s: lash_strdup(%s) failed: "
 287                    "strdup returned NULL",
 288                    file, line, function, arg1);
 289
 290   abort();
 291 }
 292
 293 #endif /* LASH_DEBUG */
 294
 295 /* EOF */