X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=lib%2Futils.c;h=8e460f4ade16b1a783ad5bd95a6e0ae9a6e2efcb;hp=f42ee3ac204c9bbead6a52ca0672b52bce539917;hb=16847ea255fa8a7c0ed922af80a2f36b7bdf4b3b;hpb=1243156a5e03a666b36bc4400f1402243a85c9a7

diff --git a/lib/utils.c b/lib/utils.c
index f42ee3ac..8e460f4a 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -1,6 +1,7 @@
 /*
     utils.c -- gathering of some stupid small functions
-    Copyright (C) 1999 Ivo Timmermans <zarq@iname.com>
+    Copyright (C) 1999,2000 Ivo Timmermans <zarq@iname.com>
+                       2000 Guus Sliepen <guus@sliepen.warande.net>
 
     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
@@ -17,10 +18,92 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
+#include <sys/types.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdarg.h>
+
 #include "config.h"
 
 #include <utils.h>
+#include <syslog.h>
+#include <xalloc.h>
+
+#ifdef ENABLE_TRACING
+volatile int (cp_line[]) = {0, 0, 0, 0, 0, 0, 0, 0};
+volatile char (*cp_file[]) = {"?", "?", "?", "?", "?", "?", "?", "?"};
+volatile int cp_index = 0;
+#endif
+
+char *hexadecimals = "0123456789ABCDEF";
+
+int charhex2bin(char c)
+{
+  if(isdigit(c))
+    return c - '0';
+  else
+    return toupper(c) - 'A' + 10;
+}
+
+
+void hex2bin(char *src, char *dst, int length)
+{
+  int i;
+  for(i=0; i<length; i++)
+    dst[i] = charhex2bin(src[i*2])*16 + charhex2bin(src[i*2+1]);
+}
+
+void bin2hex(char *src, char *dst, int length)
+{
+  int i;
+  for(i=length-1; i>=0; i--)
+    {
+      dst[i*2+1] = hexadecimals[(unsigned char)src[i] & 15];
+      dst[i*2] = hexadecimals[(unsigned char)src[i]>>4];
+    }
+}
+
+#ifdef ENABLE_TRACING
+void cp_trace()
+{
+  syslog(LOG_DEBUG, "Checkpoint trace: %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d ...",
+           cp_file[(cp_index+7)%8], cp_line[(cp_index+7)%8],
+           cp_file[(cp_index+6)%8], cp_line[(cp_index+6)%8],
+           cp_file[(cp_index+5)%8], cp_line[(cp_index+5)%8],
+           cp_file[(cp_index+4)%8], cp_line[(cp_index+4)%8],
+           cp_file[(cp_index+3)%8], cp_line[(cp_index+3)%8],
+           cp_file[(cp_index+2)%8], cp_line[(cp_index+2)%8],
+           cp_file[(cp_index+1)%8], cp_line[(cp_index+1)%8],
+           cp_file[cp_index], cp_line[cp_index]
+        );
+}
+#endif
+
+#ifndef HAVE_ASPRINTF
+int asprintf(char **buf, const char *fmt, ...)
+{
+  int status;
+  va_list ap;
+  int len;
+  
+  len = 4096;
+  *buf = xmalloc(len);
+
+  va_start(ap, fmt);
+  status = vsnprintf (*buf, len, fmt, ap);
+  va_end (ap);
+
+  if(status >= 0)
+    *buf = xrealloc(*buf, status);
 
-volatile int cp_line;
-volatile char *cp_file;
+  if(status > len-1)
+    {
+      len = status;
+      va_start(ap, fmt);
+      status = vsnprintf (*buf, len, fmt, ap);
+      va_end (ap);
+    }
 
+  return status;
+}
+#endif