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 /*
  * Copyright (C) 2008-2009 Tobias Brunner
  * Copyright (C) 2005-2008 Martin Willi
  * Hochschule fuer Technik Rapperswil
+ *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * for more details.
  */
 #include "utils.h"
 #include <sys/stat.h>
 #include <string.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <stdint.h>
 #include <limits.h>
 #include <dirent.h>
 #include <time.h>
 #include <enum.h>
 #include <debug.h>
 ENUM(status_names, SUCCESS, DESTROY_ME,
     "SUCCESS",
     "FAILED",
     "OUT_OF_RES",
     "ALREADY_DONE",
     "NOT_SUPPORTED",
     "INVALID_ARG",
     "NOT_FOUND",
     "PARSE_ERROR",
     "VERIFY_ERROR",
     "INVALID_STATE",
     "DESTROY_ME",
     "NEED_MORE",
 );
 /**
  * Described in header.
  */
 void *clalloc(void * pointer, size_t size)
+{
     void *data;
     data = malloc(size);
     memcpy(data, pointer, size);
     return (data);
+}
 /**
  * Described in header.
  */
 void memxor(u_int8_t dst[], u_int8_t src[], size_t n)
+{
     int m, i;
     /* byte wise XOR until dst aligned */
     for (i = 0; (uintptr_t)&dst[i] % sizeof(long) && i < n; i++)
+    {
         dst[i] ^= src[i];
+    }
     /* try to use words if src shares an aligment with dst */
     switch (((uintptr_t)&src[i] % sizeof(long)))
+    {
         case 0:
             for (m = n - sizeof(long); i <= m; i += sizeof(long))
+            {
                 *(long*)&dst[i] ^= *(long*)&src[i];
+            }
             break;
         case sizeof(int):
             for (m = n - sizeof(int); i <= m; i += sizeof(int))
+            {
                 *(int*)&dst[i] ^= *(int*)&src[i];
+            }
             break;
         case sizeof(short):
             for (m = n - sizeof(short); i <= m; i += sizeof(short))
+            {
                 *(short*)&dst[i] ^= *(short*)&src[i];
+            }
             break;
         default:
             break;
+    }
     /* byte wise XOR of the rest */
     for (; i < n; i++)
+    {
         dst[i] ^= src[i];
+    }
+}
 /**
  * Described in header.
  */
 void *memstr(const void *haystack, const char *needle, size_t n)
+{
     unsigned const char *pos = haystack;
     size_t l = strlen(needle);
     for (; n >= l; ++pos, --n)
+    {
         if (memeq(pos, needle, l))
+        {
             return (void*)pos;
+        }
+    }
     return NULL;
+}
 /**
  * Described in header.
  */
 bool mkdir_p(const char *path, mode_t mode)
+{
     size_t len;
     char *pos, full[PATH_MAX];
     pos = full;
     if (!path || *path == '\0')
+    {
         return TRUE;
+    }
     len = snprintf(full, sizeof(full)-1, "%s", path);
     if (len < 0 || len >= sizeof(full)-1)
+    {
         DBG1("path string %s too long", path);
         return FALSE;
+    }
     /* ensure that the path ends with a '/' */
     if (full[len-1] != '/')
+    {
         full[len++] = '/';
         full[len] = '\0';
+    }
     /* skip '/' at the beginning */
     while (*pos == '/')
+    {
         pos++;
+    }
     while ((pos = strchr(pos, '/')))
+    {
         *pos = '\0';
         if (access(full, F_OK) < 0)
+        {
             if (mkdir(full, mode) < 0)
+            {
                 DBG1("failed to create directory %s", full);
                 return FALSE;
+            }
+        }
         *pos = '/';
         pos++;
+    }
     return TRUE;
+}
 /**
  * Return monotonic time
  */
 time_t time_monotonic(timeval_t *tv)
+{
 #if defined(HAVE_CLOCK_GETTIME) && defined(HAVE_CONDATTR_CLOCK_MONOTONIC)
     /* as we use time_monotonic() for condvar operations, we use the
      * monotonic time source only if it is also supported by pthread. */
     timespec_t ts;
     if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
+    {
         if (tv)
+        {
             tv->tv_sec = ts.tv_sec;
             tv->tv_usec = ts.tv_nsec / 1000;
+        }
         return ts.tv_sec;
+    }
 #endif /* HAVE_CLOCK_MONOTONIC && HAVE_CONDATTR_CLOCK_MONOTONIC */
     /* Fallback to non-monotonic timestamps:
      * On MAC OS X, creating monotonic timestamps is rather difficult. We
      * could use mach_absolute_time() and catch sleep/wakeup notifications.
      * We stick to the simpler (non-monotonic) gettimeofday() for now.
      * But keep in mind: we need the same time source here as in condvar! */
     if (!tv)
+    {
         return time(NULL);
+    }
     if (gettimeofday(tv, NULL) != 0)
     {    /* should actually never fail if passed pointers are valid */
         return -1;
+    }
     return tv->tv_sec;
+}
 /**
  * return null
  */
 void *return_null()
+{
     return NULL;
+}
 /**
  * returns TRUE
  */
 bool return_true()
+{
     return TRUE;
+}
 /**
  * returns FALSE
  */
 bool return_false()
+{
     return FALSE;
+}
 /**
  * nop operation
  */
 void nop()
+{
+}
 #ifndef HAVE_GCC_ATOMIC_OPERATIONS
 #include <pthread.h>
 /**
  * We use a single mutex for all refcount variables.
  */
 static pthread_mutex_t ref_mutex = PTHREAD_MUTEX_INITIALIZER;
 /**
  * Increase refcount
  */
 void ref_get(refcount_t *ref)
+{
     pthread_mutex_lock(&ref_mutex);
     (*ref)++;
     pthread_mutex_unlock(&ref_mutex);
+}
 /**
  * Decrease refcount
  */
 bool ref_put(refcount_t *ref)
+{
     bool more_refs;
     pthread_mutex_lock(&ref_mutex);
     more_refs = --(*ref);
     pthread_mutex_unlock(&ref_mutex);
     return !more_refs;
+}
 #endif /* HAVE_GCC_ATOMIC_OPERATIONS */
 /**
  * Described in header.
  */
 int time_printf_hook(char *dst, size_t len, printf_hook_spec_t *spec,
                      const void *const *args)
+{
     static const char* months[] = {
         "Jan", "Feb", "Mar", "Apr", "May", "Jun",
         "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
     };
     time_t *time = *((time_t**)(args[0]));
     bool utc = *((bool*)(args[1]));;
     struct tm t;
     if (time == UNDEFINED_TIME)
+    {
         return print_in_hook(dst, len, "--- -- --:--:--%s----",
                              utc ? " UTC " : " ");
+    }
     if (utc)
+    {
         gmtime_r(time, &t);
+    }
     else
+    {
         localtime_r(time, &t);
+    }
     return print_in_hook(dst, len, "%s %02d %02d:%02d:%02d%s%04d",
                          months[t.tm_mon], t.tm_mday, t.tm_hour, t.tm_min,
                          t.tm_sec, utc ? " UTC " : " ", t.tm_year + 1900);
+}
 /**
  * Described in header.
  */
 int time_delta_printf_hook(char *dst, size_t len, printf_hook_spec_t *spec,
                            const void *const *args)
+{
     char* unit = "second";
     time_t *arg1 = *((time_t**)(args[0]));
     time_t *arg2 = *((time_t**)(args[1]));
     time_t delta = abs(*arg1 - *arg2);
     if (delta > 2 * 60 * 60 * 24)
+    {
         delta /= 60 * 60 * 24;
         unit = "day";
+    }
     else if (delta > 2 * 60 * 60)
+    {
         delta /= 60 * 60;
         unit = "hour";
+    }
     else if (delta > 2 * 60)
+    {
         delta /= 60;
         unit = "minute";
+    }
     return print_in_hook(dst, len, "%d %s%s", delta, unit, (delta == 1)? "":"s");
+}
 /**
  * Number of bytes per line to dump raw data
  */
 #define BYTES_PER_LINE 16
 static char hexdig_upper[] = "0123456789ABCDEF";
 /**
  * Described in header.
  */
 int mem_printf_hook(char *dst, size_t dstlen,
                     printf_hook_spec_t *spec, const void *const *args)
+{
     char *bytes = *((void**)(args[0]));
     int len = *((size_t*)(args[1]));
     char buffer[BYTES_PER_LINE * 3];
     char ascii_buffer[BYTES_PER_LINE + 1];
     char *buffer_pos = buffer;
     char *bytes_pos  = bytes;
     char *bytes_roof = bytes + len;
     int line_start = 0;
     int i = 0;
     int written = 0;
     written += print_in_hook(dst, dstlen, "=> %d bytes @ %p", len, bytes);
     while (bytes_pos < bytes_roof)
+    {
         *buffer_pos++ = hexdig_upper[(*bytes_pos >> 4) & 0xF];
         *buffer_pos++ = hexdig_upper[ *bytes_pos       & 0xF];
         ascii_buffer[i++] =
                 (*bytes_pos > 31 && *bytes_pos < 127) ? *bytes_pos : '.';
         if (++bytes_pos == bytes_roof || i == BYTES_PER_LINE)
+        {
             int padding = 3 * (BYTES_PER_LINE - i);
             while (padding--)
+            {
                 *buffer_pos++ = ' ';
+            }
             *buffer_pos++ = '\0';
             ascii_buffer[i] = '\0';
             written += print_in_hook(dst, dstlen, "\n%4d: %s  %s",
                                      line_start, buffer, ascii_buffer);
             buffer_pos = buffer;
             line_start += BYTES_PER_LINE;
             i = 0;
+        }
         else
+        {
             *buffer_pos++ = ' ';
+        }
+    }
     return written;
+}