gpgme/lang/cpp/src/scdgetinfoassuantransaction.cpp

/*
  scdgetinfoassuantransaction.cpp - Assuan Transaction to get information from scdaemon
  Copyright (C) 2009 Klarälvdalens Datakonsult AB

  This file is part of GPGME++.

  GPGME++ is free software; you can redistribute it and/or
  modify it under the terms of the GNU Library General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.

  GPGME++ is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Library General Public License for more details.

  You should have received a copy of the GNU Library General Public License
  along with GPGME++; see the file COPYING.LIB.  If not, write to the
  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  Boston, MA 02110-1301, USA.
*/

#ifdef HAVE_CONFIG_H
 #include "config.h"
#endif

#include "scdgetinfoassuantransaction.h"
#include "error.h"
#include "data.h"
#include "util.h"

#include <sstream>
#include <assert.h>

using namespace GpgME;

ScdGetInfoAssuanTransaction::ScdGetInfoAssuanTransaction(InfoItem item)
    : AssuanTransaction(),
      m_item(item),
      m_command(),
      m_data()
{

}

ScdGetInfoAssuanTransaction::~ScdGetInfoAssuanTransaction() {}

static std::vector<std::string> to_reader_list(const std::string &s)
{
    std::vector<std::string> result;
    std::stringstream ss(s);
    std::string tok;
    while (std::getline(ss, tok, '\n')) {
        result.push_back(tok);
    }
    return result;
}

static std::vector<std::string> to_app_list(const std::string &s)
{
    return to_reader_list(s);
}

std::string ScdGetInfoAssuanTransaction::version() const
{
    if (m_item == Version) {
        return m_data;
    } else {
        return std::string();
    }
}

unsigned int ScdGetInfoAssuanTransaction::pid() const
{
    if (m_item == Pid) {
        return to_pid(m_data);
    } else {
        return 0U;
    }
}

std::string ScdGetInfoAssuanTransaction::socketName() const
{
    if (m_item == SocketName) {
        return m_data;
    } else {
        return std::string();
    }
}

char ScdGetInfoAssuanTransaction::status() const
{
    if (m_item == Status && !m_data.empty()) {
        return m_data[0];
    } else {
        return '\0';
    }
}

std::vector<std::string> ScdGetInfoAssuanTransaction::readerList() const
{
    if (m_item == ReaderList) {
        return to_reader_list(m_data);
    } else {
        return std::vector<std::string>();
    }
}

std::vector<std::string> ScdGetInfoAssuanTransaction::applicationList() const
{
    if (m_item == ApplicationList) {
        return to_app_list(m_data);
    } else {
        return std::vector<std::string>();
    }
}

static const char *const scd_getinfo_tokens[] = {
    "version",
    "pid",
    "socket_name",
    "status",
    "reader_list",
    "deny_admin",
    "app_list",
};
static_assert((sizeof scd_getinfo_tokens / sizeof * scd_getinfo_tokens == ScdGetInfoAssuanTransaction::LastInfoItem),
              "getinfo_tokens size mismatch");

void ScdGetInfoAssuanTransaction::makeCommand() const
{
    assert(m_item >= 0);
    assert(m_item < LastInfoItem);
    m_command = "SCD GETINFO ";
    m_command += scd_getinfo_tokens[m_item];
}

const char *ScdGetInfoAssuanTransaction::command() const
{
    makeCommand();
    return m_command.c_str();
}

Error ScdGetInfoAssuanTransaction::data(const char *data, size_t len)
{
    m_data.append(data, len);
    return Error();
}

Data ScdGetInfoAssuanTransaction::inquire(const char *name, const char *args, Error &err)
{
    (void)name; (void)args; (void)err;
    return Data::null;
}

Error ScdGetInfoAssuanTransaction::status(const char *status, const char *args)
{
    (void)status; (void)args;
    return Error();
}