Don't use $USER for Local Login check

remoting/base/util.cc

Index: remoting/base/util.cc
diff --git a/remoting/base/util.cc b/remoting/base/util.cc
index 58734229aa733d83c430291913bd389dc9564ddf..81d972ace2d176949de8ac078baae909344731b1 100644
--- a/remoting/base/util.cc
+++ b/remoting/base/util.cc
@@ -13,6 +13,12 @@
 #include "media/base/yuv_convert.h"
 #include "third_party/skia/include/core/SkRegion.h"
 
+#if defined(OS_POSIX)
+#include <pwd.h>
+#include <sys/types.h>
+#include <unistd.h>
+#endif  // defined(OS_POSIX)
+
 using media::VideoFrame;
 
 namespace remoting {
@@ -311,4 +317,30 @@ bool StringIsUtf8(const char* data, size_t length) {
   return true;
 }
 
+bool CanGetUsername() {
+#if defined(OS_POSIX)
+  return true;
+#else  // !defined(OS_POSIX)
+  return false;
+#endif  // defined(OS_POSIX)
+}
+
+std::string GetUsername() {
+#if defined(OS_POSIX)
+  long buf_size = sysconf(_SC_GETPW_R_SIZE_MAX);
+  if (buf_size <= 0)
+    return "";

[Sergey Ulanov, 2013/03/29 17:50:01]

please use std::string() instead of ""

[Lambros, 2013/03/29 19:30:22]

Done.

+  scoped_array<char> buf(new char[buf_size]);
+  struct passwd passwd;
+  struct passwd* passwd_result = NULL;
+  getpwuid_r(getuid(), &passwd, buf.get(), buf_size, &passwd_result);
+  if (!passwd_result)
+    return "";
+  return std::string(passwd_result->pw_name);
+#else  // !defined(OS_POSIX)
+  NOTREACHED();
+  return "";
+#endif  // defined(OS_POSIX)
+}
+
 }  // namespace remoting