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secure_pwd_reader: Add proper Unicode handling [Ryo contribution]

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This commit is contained in:
fireice-uk 2018-09-19 13:39:17 +01:00
parent 579383c26b
commit a061353254
1 changed files with 23 additions and 11 deletions
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34
src/common/password.cpp
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@ -56,8 +56,6 @@ namespace
bool read_from_tty(epee::wipeable_string& pass, bool hide_input)
{
static constexpr const char BACKSPACE = 8;
HANDLE h_cin = ::GetStdHandle(STD_INPUT_HANDLE);
DWORD mode_old;
@ -67,32 +65,46 @@ namespace
bool r = true;
pass.reserve(tools::password_container::max_password_size);
std::vector<int> chlen;
chlen.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));
wchar_t ucs2_ch;
r = (TRUE == ::ReadConsoleW(h_cin, &ucs2_ch, 1, &read, NULL));
r &= (1 == read);
if (!r)
{
break;
}
else if (ch == '\n' || ch == '\r')
else if (ucs2_ch == L'\n' || ucs2_ch == L'\r')
{
std::cout << std::endl;
break;
}
else if (ch == BACKSPACE)
else if (ucs2_ch == L'\b')
{
if (!pass.empty())
{
pass.pop_back();
int len = chlen.back();
chlen.pop_back();
while(len-- > 0)
pass.pop_back();
}
continue;
}
else
{
pass.push_back(ch);
}
char utf8_ch[8] = {0};
int len;
if((len = WideCharToMultiByte(CP_UTF8, 0, &ucs2_ch, 1, utf8_ch, sizeof(utf8_ch), NULL, NULL)) <= 0)
break;
if(pass.size() + len >= tools::password_container::max_password_size)
break;
chlen.push_back(len);
pass += utf8_ch;
}
::SetConsoleMode(h_cin, mode_old);