various bug fixes

src/Utilities.cpp

@@ -0,0 +1,84 @@
+/*
+ * ZeroTier SDK - Network Virtualization Everywhere
+ * Copyright (C) 2011-2016  ZeroTier, Inc.  https://www.zerotier.com/
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <execinfo.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+
+void zt_dump_stacktrace(int sig) {
+  void *array[16];
+  size_t size;
+  size = backtrace(array, 16);
+  fprintf(stderr, "Error: signal %d:\n", sig);
+  backtrace_symbols_fd(array, size, STDERR_FILENO);
+  exit(1);
+}
+
+/*
+char *beautify_pico_error(int err)
+{
+	switch(err){
+		PICO_ERR_NOERR = 0,
+    PICO_ERR_EPERM = 1,
+    PICO_ERR_ENOENT = 2,
+    
+    PICO_ERR_EINTR = 4,
+    PICO_ERR_EIO = 5,
+    PICO_ERR_ENXIO = 6,
+    
+    PICO_ERR_EAGAIN = 11,
+    PICO_ERR_ENOMEM = 12,
+    PICO_ERR_EACCESS = 13,
+    PICO_ERR_EFAULT = 14,
+   
+    PICO_ERR_EBUSY = 16,
+    PICO_ERR_EEXIST = 17,
+   
+    PICO_ERR_EINVAL = 22,
+
+    PICO_ERR_ENONET = 64,
+
+    PICO_ERR_EPROTO = 71,
+
+    PICO_ERR_ENOPROTOOPT = 92,
+    PICO_ERR_EPROTONOSUPPORT = 93,
+
+    PICO_ERR_EOPNOTSUPP = 95,
+    PICO_ERR_EADDRINUSE = 98,
+    PICO_ERR_EADDRNOTAVAIL = 99,
+    PICO_ERR_ENETDOWN = 100,
+    PICO_ERR_ENETUNREACH = 101,
+
+    PICO_ERR_ECONNRESET = 104,
+
+    PICO_ERR_EISCONN = 106,
+    PICO_ERR_ENOTCONN = 107,
+    PICO_ERR_ESHUTDOWN = 108,
+
+    PICO_ERR_ETIMEDOUT = 110,
+    PICO_ERR_ECONNREFUSED = 111,
+    PICO_ERR_EHOSTDOWN = 112,
+    PICO_ERR_EHOSTUNREACH = 113,
+	}
+	return err_text;
+}
+*/