remoting/host/username.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "remoting/host/username.h"
   6
   7 #include <vector>
   8
   9 #include "base/logging.h"
  10
  11 #if defined(OS_POSIX)
  12 #include <pwd.h>
  13 #include <sys/types.h>
  14 #include <unistd.h>
  15 #endif  // defined(OS_POSIX)
  16
  17 namespace remoting {
  18
  19 std::string GetUsername() {
  20 #if defined(OS_POSIX)
  21   long buf_size = sysconf(_SC_GETPW_R_SIZE_MAX);
  22   if (buf_size <= 0)
  23     return std::string();
  24
  25   std::vector<char> buf(buf_size);
  26   struct passwd passwd;
  27   struct passwd* passwd_result = nullptr;
  28   getpwuid_r(getuid(), &passwd, &(buf[0]), buf_size, &passwd_result);
  29   return passwd_result ? passwd_result->pw_name : std::string();
  30 #else  // !defined(OS_POSIX)
  31   NOTIMPLEMENTED();
  32   return std::string();
  33 #endif  // defined(OS_POSIX)
  34 }
  35
  36 }  // namespace remoting