Add server auth to monerod, and client auth to wallet-cli and wallet-rpc

src/common/password.cpp

@@ -0,0 +1,271 @@
+// Copyright (c) 2014-2017, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. 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.
+// 
+// 3. Neither the name of the copyright holder 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 HOLDER 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.
+// 
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#include "password.h"
+
+#include <iostream>
+#include <memory.h>
+#include <stdio.h>
+
+#if defined(_WIN32)
+#include <io.h>
+#include <windows.h>
+#else
+#include <termios.h>
+#include <unistd.h>
+#endif
+
+namespace
+{
+#if defined(_WIN32)
+  bool is_cin_tty() noexcept
+  {
+    return 0 != _isatty(_fileno(stdin));
+  }
+
+  bool read_from_tty(std::string& pass)
+  {
+    static constexpr const char BACKSPACE = 8;
+
+    HANDLE h_cin = ::GetStdHandle(STD_INPUT_HANDLE);
+
+    DWORD mode_old;
+    ::GetConsoleMode(h_cin, &mode_old);
+    DWORD mode_new = mode_old & ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT);
+    ::SetConsoleMode(h_cin, mode_new);
+
+    bool r = true;
+    pass.reserve(tools::password_container::max_password_size);
+    while (pass.size() < tools::password_container::max_password_size)
+    {
+      DWORD read;
+      char ch;
+      r = (TRUE == ::ReadConsoleA(h_cin, &ch, 1, &read, NULL));
+      r &= (1 == read);
+      if (!r)
+      {
+        break;
+      }
+      else if (ch == '\n' || ch == '\r')
+      {
+        std::cout << std::endl;
+        break;
+      }
+      else if (ch == BACKSPACE)
+      {
+        if (!pass.empty())
+        {
+          pass.back() = '\0';
+          pass.resize(pass.size() - 1);
+          std::cout << "\b \b";
+        }
+      }
+      else
+      {
+        pass.push_back(ch);
+        std::cout << '*';
+      }
+    }
+
+    ::SetConsoleMode(h_cin, mode_old);
+
+    return r;
+  }
+
+#else // end WIN32 
+
+  bool is_cin_tty() noexcept
+  {
+    return 0 != isatty(fileno(stdin));
+  }
+
+  int getch() noexcept
+  {
+    struct termios tty_old;
+    tcgetattr(STDIN_FILENO, &tty_old);
+
+    struct termios tty_new;
+    tty_new = tty_old;
+    tty_new.c_lflag &= ~(ICANON | ECHO);
+    tcsetattr(STDIN_FILENO, TCSANOW, &tty_new);
+
+    int ch = getchar();
+
+    tcsetattr(STDIN_FILENO, TCSANOW, &tty_old);
+
+    return ch;
+  }
+
+  bool read_from_tty(std::string& aPass)
+  {
+    static constexpr const char BACKSPACE = 127;
+
+    aPass.reserve(tools::password_container::max_password_size);
+    while (aPass.size() < tools::password_container::max_password_size)
+    {
+      int ch = getch();
+      if (EOF == ch)
+      {
+        return false;
+      }
+      else if (ch == '\n' || ch == '\r')
+      {
+        std::cout << std::endl;
+        break;
+      }
+      else if (ch == BACKSPACE)
+      {
+        if (!aPass.empty())
+        {
+          aPass.back() = '\0';
+          aPass.resize(aPass.size() - 1);
+          std::cout << "\b \b";
+        }
+      }
+      else
+      {
+        aPass.push_back(ch);
+        std::cout << '*';
+      }
+    }
+
+    return true;
+  }
+
+#endif // end !WIN32
+
+  void clear(std::string& pass) noexcept
+  {
+    //! TODO Call a memory wipe function that hopefully is not optimized out
+    pass.replace(0, pass.capacity(), pass.capacity(), '\0');
+    pass.clear();
+  }
+
+  bool read_from_tty(const bool verify, const char *message, std::string& pass1, std::string& pass2)
+  {
+    while (true)
+    {
+      if (message)
+        std::cout << message <<": ";
+      if (!read_from_tty(pass1))
+        return false;
+      if (verify)
+      {
+        std::cout << "Confirm Password: ";
+        if (!read_from_tty(pass2))
+          return false;
+        if(pass1!=pass2)
+        {
+          std::cout << "Passwords do not match! Please try again." << std::endl;
+          clear(pass1);
+          clear(pass2);
+        }
+        else //new password matches
+          return true;
+      }
+      else
+        return true;
+        //No need to verify password entered at this point in the code
+    }
+
+    return false;
+  }
+
+  bool read_from_file(std::string& pass)
+  {
+    pass.reserve(tools::password_container::max_password_size);
+    for (size_t i = 0; i < tools::password_container::max_password_size; ++i)
+    {
+      char ch = static_cast<char>(std::cin.get());
+      if (std::cin.eof() || ch == '\n' || ch == '\r')
+      {
+        break;
+      }
+      else if (std::cin.fail())
+      {
+        return false;
+      }
+      else
+      {
+        pass.push_back(ch);
+      }
+    }
+    return true;
+  }
+
+} // anonymous namespace
+
+namespace tools 
+{
+  // deleted via private member
+  password_container::password_container() noexcept : m_password() {}
+  password_container::password_container(std::string&& password) noexcept
+    : m_password(std::move(password)) 
+  {
+  }
+
+  password_container::~password_container() noexcept
+  {
+    clear(m_password);
+  }
+
+  boost::optional<password_container> password_container::prompt(const bool verify, const char *message)
+  {
+    password_container pass1{};
+    password_container pass2{};
+    if (is_cin_tty() ? read_from_tty(verify, message, pass1.m_password, pass2.m_password) : read_from_file(pass1.m_password))
+      return {std::move(pass1)};
+
+    return boost::none;
+  }
+
+  boost::optional<login> login::parse(std::string&& userpass, bool verify, const char* message)
+  {
+    login out{};
+    password_container wipe{std::move(userpass)};
+
+    const auto loc = wipe.password().find(':');
+    if (loc == std::string::npos)
+    {
+      auto result = tools::password_container::prompt(verify, message);
+      if (!result)
+        return boost::none;
+
+      out.password = std::move(*result);
+    }
+    else
+    {
+      out.password = password_container{wipe.password().substr(loc + 1)};
+    }
+
+    out.username = wipe.password().substr(0, loc);
+    return {std::move(out)};
+  }
+}