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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2013-2022 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#include "accumulator.hpp"
#include "ndnsec.hpp"
#include "util.hpp"
#include "ndn-cxx/util/indented-stream.hpp"
namespace ndn {
namespace ndnsec {
namespace {
// https://en.wikipedia.org/wiki/Box_Drawing
// https://git.altlinux.org/people/legion/packages/kbd.git?p=kbd.git;a=blob;f=data/consolefonts/README.eurlatgr
static const char GLYPH_HORIZONTAL[] = "\u2500 "; // "─ "
static const char GLYPH_VERTICAL[] = "\u2502 "; // "│ "
static const char GLYPH_VERTICAL_AND_RIGHT[] = "\u251c\u2500"; // "├─"
static const char GLYPH_UP_AND_RIGHT[] = "\u2514\u2500"; // "└─"
static const char GLYPH_SPACE[] = " ";
static const char GLYPH_STAR[] = "* ";
enum class Verbosity {
IDENTITY = 0,
KEY = 1,
CERT_NAME = 2,
CERT_FULL = 3,
};
class TreePrinter
{
public:
explicit
TreePrinter(std::ostream& output)
: m_out(output)
{
}
template<typename C, typename F>
void
forEachChild(const C& container, F fn) const
{
m_branches.push_back(false);
auto end = container.end();
for (auto it = container.begin(); it != end; ++it) {
bool isLast = std::next(it) == end;
if (isLast) {
m_branches.back() = true;
}
printBranches(m_out);
fn(*it);
}
m_branches.pop_back();
}
std::string
getIndent() const
{
std::ostringstream oss;
printBranches(oss, true);
return oss.str();
}
private:
void
printBranches(std::ostream& os, bool ignoreLast = false) const
{
for (size_t i = 0; i < m_branches.size(); ++i) {
if (i == m_branches.size() - 1 && !ignoreLast) {
os << (m_branches[i] ? GLYPH_UP_AND_RIGHT : GLYPH_VERTICAL_AND_RIGHT);
}
else {
os << (m_branches[i] ? GLYPH_SPACE : GLYPH_VERTICAL) << GLYPH_SPACE;
}
}
}
protected:
std::ostream& m_out;
private:
mutable std::vector<bool> m_branches;
};
class Printer : private TreePrinter
{
public:
explicit
Printer(std::ostream& output, Verbosity verbosity)
: TreePrinter(output)
, m_verbosity(verbosity)
{
}
void
printPib(const security::Pib& pib) const
{
m_out << pib.getPibLocator() << std::endl;
security::Identity defaultIdentity;
try {
defaultIdentity = pib.getDefaultIdentity();
}
catch (const security::Pib::Error&) {
// no default identity
}
forEachChild(pib.getIdentities(), [&] (const auto& identity) {
printIdentity(identity, identity == defaultIdentity);
});
}
void
printIdentity(const security::Identity& identity, bool isDefault) const
{
printDefault(isDefault);
m_out << identity.getName() << std::endl;
if (m_verbosity >= Verbosity::KEY) {
security::Key defaultKey;
try {
defaultKey = identity.getDefaultKey();
}
catch (const security::Pib::Error&) {
// no default key
}
forEachChild(identity.getKeys(), [&] (const auto& key) {
printKey(key, key == defaultKey);
});
}
}
void
printKey(const security::Key& key, bool isDefault) const
{
printDefault(isDefault);
m_out << key.getName() << std::endl;
if (m_verbosity >= Verbosity::CERT_NAME) {
security::Certificate defaultCert;
try {
defaultCert = key.getDefaultCertificate();
}
catch (const security::Pib::Error&) {
// no default certificate
}
forEachChild(key.getCertificates(), [&] (const auto& cert) {
printCertificate(cert, cert == defaultCert);
});
}
}
void
printCertificate(const security::Certificate& cert, bool isDefault) const
{
printDefault(isDefault);
m_out << cert.getName() << std::endl;
if (m_verbosity >= Verbosity::CERT_FULL) {
util::IndentedStream os(m_out, getIndent() + GLYPH_SPACE);
os << cert;
}
}
private:
void
printDefault(bool isDefault) const
{
m_out << (isDefault ? GLYPH_STAR : GLYPH_HORIZONTAL);
}
private:
Verbosity m_verbosity;
};
} // namespace
int
ndnsec_list(int argc, char** argv)
{
namespace po = boost::program_options;
bool wantKey = false;
bool wantCert = false;
auto verboseLevel = to_underlying(Verbosity::IDENTITY);
po::options_description description(
"Usage: ndnsec list [-h] [-k] [-c] [-v]\n"
"\n"
"Options");
description.add_options()
("help,h", "produce help message")
("key,k", po::bool_switch(&wantKey), "list all keys associated with each identity")
("cert,c", po::bool_switch(&wantCert), "list all certificates associated with each key")
("verbose,v", accumulator<std::underlying_type_t<Verbosity>>(&verboseLevel),
"verbose mode, can be repeated for increased verbosity: -v is equivalent to -k, "
"-vv is equivalent to -c, -vvv shows detailed information for each certificate")
;
po::variables_map vm;
try {
po::store(po::parse_command_line(argc, argv, description), vm);
po::notify(vm);
}
catch (const std::exception& e) {
std::cerr << "ERROR: " << e.what() << "\n\n"
<< description << std::endl;
return 2;
}
if (vm.count("help") > 0) {
std::cout << description << std::endl;
return 0;
}
KeyChain keyChain;
auto verbosity = std::max(static_cast<Verbosity>(verboseLevel),
wantCert ? Verbosity::CERT_NAME :
wantKey ? Verbosity::KEY :
Verbosity::IDENTITY);
Printer printer(std::cout, verbosity);
printer.printPib(keyChain.getPib());
return 0;
}
} // namespace ndnsec
} // namespace ndn