Import axTLS 1.4.9

ssl/os_port.c

@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2007, Cameron Rich
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation 
+ *   and/or other materials provided with the distribution.
+ * * Neither the name of the axTLS project nor the names of its contributors 
+ *   may be used to endorse or promote products derived from this software 
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file os_port.c
+ *
+ * OS specific functions.
+ */
+#include <time.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdarg.h>
+#include "os_port.h"
+
+#ifdef WIN32
+/**
+ * gettimeofday() not in Win32 
+ */
+EXP_FUNC void STDCALL gettimeofday(struct timeval* t, void* timezone)
+{       
+#if defined(_WIN32_WCE)
+    t->tv_sec = time(NULL);
+    t->tv_usec = 0;                         /* 1sec precision only */ 
+#else
+    struct _timeb timebuffer;
+    _ftime(&timebuffer);
+    t->tv_sec = (long)timebuffer.time;
+    t->tv_usec = 1000 * timebuffer.millitm; /* 1ms precision */
+#endif
+}
+
+/**
+ * strcasecmp() not in Win32
+ */
+EXP_FUNC int STDCALL strcasecmp(const char *s1, const char *s2)
+{
+    while (tolower(*s1) == tolower(*s2++))
+    {
+        if (*s1++ == '\0')
+        {
+            return 0;
+        }
+    }
+
+    return *(unsigned char *)s1 - *(unsigned char *)(s2 - 1);
+}
+
+
+EXP_FUNC int STDCALL getdomainname(char *buf, int buf_size)
+{
+    HKEY hKey;
+    unsigned long datatype;
+    unsigned long bufferlength = buf_size;
+
+    if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,
+            TEXT("SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"),
+                        0, KEY_QUERY_VALUE, &hKey) != ERROR_SUCCESS)
+        return -1;
+
+    RegQueryValueEx(hKey, "Domain", NULL, &datatype, buf, &bufferlength);
+    RegCloseKey(hKey);
+    return 0; 
+}
+#endif
+
+#undef malloc
+#undef realloc
+#undef calloc
+
+static const char * out_of_mem_str = "out of memory";
+static const char * file_open_str = "Could not open file \"%s\"";
+
+/* 
+ * Some functions that call display some error trace and then call abort().
+ * This just makes life much easier on embedded systems, since we're 
+ * suffering major trauma...
+ */
+EXP_FUNC void * STDCALL ax_malloc(size_t s)
+{
+    void *x;
+
+    if ((x = malloc(s)) == NULL)
+        exit_now(out_of_mem_str);
+
+    return x;
+}
+
+EXP_FUNC void * STDCALL ax_realloc(void *y, size_t s)
+{
+    void *x;
+
+    if ((x = realloc(y, s)) == NULL)
+        exit_now(out_of_mem_str);
+
+    return x;
+}
+
+EXP_FUNC void * STDCALL ax_calloc(size_t n, size_t s)
+{
+    void *x;
+
+    if ((x = calloc(n, s)) == NULL)
+        exit_now(out_of_mem_str);
+
+    return x;
+}
+
+EXP_FUNC int STDCALL ax_open(const char *pathname, int flags)
+{
+    int x;
+
+    if ((x = open(pathname, flags)) < 0)
+        exit_now(file_open_str, pathname);
+
+    return x;
+}
+
+/**
+ * This is a call which will deliberately exit an application, but will
+ * display some information before dying.
+ */
+void exit_now(const char *format, ...)
+{
+    va_list argp;
+
+    va_start(argp, format);
+    vfprintf(stderr, format, argp);
+    va_end(argp);
+    abort();
+}
+