Extract get_uname to lib/osinfo.

1 files changed, 110 insertions, 0 deletions

diff --git a/src/lib/osinfo/uname.c b/src/lib/osinfo/uname.c
new file mode 100644
index 0000000000..fb5cc7c20d
--- /dev/null
+++ b/src/lib/osinfo/uname.c
@@ -0,0 +1,110 @@
+/* Copyright (c) 2003-2004, Roger Dingledine
+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
+ * Copyright (c) 2007-2018, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+#include "orconfig.h"
+#include "lib/osinfo/uname.h"
+
+#include "lib/string/compat_string.h"
+#include "lib/string/printf.h"
+
+#ifdef HAVE_UNAME
+#include <sys/utsname.h>
+#endif
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+/** Hold the result of our call to <b>uname</b>. */
+static char uname_result[256];
+/** True iff uname_result is set. */
+static int uname_result_is_set = 0;
+
+/** Return a pointer to a description of our platform.
+ */
+MOCK_IMPL(const char *,
+get_uname,(void))
+{
+#ifdef HAVE_UNAME
+  struct utsname u;
+#endif
+  if (!uname_result_is_set) {
+#ifdef HAVE_UNAME
+    if (uname(&u) != -1) {
+      /* (Linux says 0 is success, Solaris says 1 is success) */
+      strlcpy(uname_result, u.sysname, sizeof(uname_result));
+    } else
+#endif /* defined(HAVE_UNAME) */
+      {
+#ifdef _WIN32
+        OSVERSIONINFOEX info;
+        int i;
+        const char *plat = NULL;
+        static struct {
+          unsigned major; unsigned minor; const char *version;
+        } win_version_table[] = {
+          { 6, 2, "Windows 8" },
+          { 6, 1, "Windows 7" },
+          { 6, 0, "Windows Vista" },
+          { 5, 2, "Windows Server 2003" },
+          { 5, 1, "Windows XP" },
+          { 5, 0, "Windows 2000" },
+          /* { 4, 0, "Windows NT 4.0" }, */
+          { 4, 90, "Windows Me" },
+          { 4, 10, "Windows 98" },
+          /* { 4, 0, "Windows 95" } */
+          { 3, 51, "Windows NT 3.51" },
+          { 0, 0, NULL }
+        };
+        memset(&info, 0, sizeof(info));
+        info.dwOSVersionInfoSize = sizeof(info);
+        if (! GetVersionEx((LPOSVERSIONINFO)&info)) {
+          strlcpy(uname_result, "Bizarre version of Windows where GetVersionEx"
+                  " doesn't work.", sizeof(uname_result));
+          uname_result_is_set = 1;
+          return uname_result;
+        }
+        if (info.dwMajorVersion == 4 && info.dwMinorVersion == 0) {
+          if (info.dwPlatformId == VER_PLATFORM_WIN32_NT)
+            plat = "Windows NT 4.0";
+          else
+            plat = "Windows 95";
+        } else {
+          for (i=0; win_version_table[i].major>0; ++i) {
+            if (win_version_table[i].major == info.dwMajorVersion &&
+                win_version_table[i].minor == info.dwMinorVersion) {
+              plat = win_version_table[i].version;
+              break;
+            }
+          }
+        }
+        if (plat) {
+          strlcpy(uname_result, plat, sizeof(uname_result));
+        } else {
+          if (info.dwMajorVersion > 6 ||
+              (info.dwMajorVersion==6 && info.dwMinorVersion>2))
+            tor_snprintf(uname_result, sizeof(uname_result),
+                         "Very recent version of Windows [major=%d,minor=%d]",
+                         (int)info.dwMajorVersion,(int)info.dwMinorVersion);
+          else
+            tor_snprintf(uname_result, sizeof(uname_result),
+                         "Unrecognized version of Windows [major=%d,minor=%d]",
+                         (int)info.dwMajorVersion,(int)info.dwMinorVersion);
+        }
+#ifdef VER_NT_SERVER
+      if (info.wProductType == VER_NT_SERVER ||
+          info.wProductType == VER_NT_DOMAIN_CONTROLLER) {
+        strlcat(uname_result, " [server]", sizeof(uname_result));
+      }
+#endif /* defined(VER_NT_SERVER) */
+#else /* !(defined(_WIN32)) */
+        /* LCOV_EXCL_START -- can't provoke uname failure */
+        strlcpy(uname_result, "Unknown platform", sizeof(uname_result));
+        /* LCOV_EXCL_STOP */
+#endif /* defined(_WIN32) */
+      }
+    uname_result_is_set = 1;
+  }
+  return uname_result;
+}