added asan compiler option, basic string cleaning

https://github.com/moneroexamples/onion-monero-blockchain-explorer/issues/91
This commit is contained in:
moneroexamples 2017-12-20 08:04:17 +08:00
parent d3b3e4904c
commit c26882897b
4 changed files with 299 additions and 265 deletions

View file

@ -7,7 +7,12 @@ set(PROJECT_NAME
project(${PROJECT_NAME})
set(CMAKE_CXX_FLAGS
"${CMAKE_CXX_FLAGS} -std=c++14")
"${CMAKE_CXX_FLAGS} -std=c++14 -fsanitize=address -fno-omit-frame-pointer")
set(CMAKE_C_FLAGS
"${CMAKE_C_FLAGS} -fsanitize=address -fno-omit-frame-pointer -DLEAK_SANITIZER")
#
if (WIN32)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wa,-mbig-obj -O3")
@ -102,16 +107,15 @@ set(LIBRARIES
cryptonote_basic
daemonizer
cncrypto
blocks
lmdb
ringct
common
mnemonics
epee
easylogging
checkpoints
version
epee
${Boost_LIBRARIES}
pthread
unbound

View file

@ -11,6 +11,7 @@
#include <regex>
using boost::filesystem::path;
using xmreg::remove_bad_chars;
using namespace std;
@ -276,18 +277,18 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/block/<string>")
([&](const crow::request& req, string block_hash) {
return crow::response(xmrblocks.show_block(block_hash));
return crow::response(xmrblocks.show_block(remove_bad_chars(block_hash)));
});
CROW_ROUTE(app, "/tx/<string>")
([&](const crow::request& req, string tx_hash) {
return crow::response(xmrblocks.show_tx(tx_hash));
return crow::response(xmrblocks.show_tx(remove_bad_chars(tx_hash)));
});
CROW_ROUTE(app, "/tx/<string>/<uint>")
([&](string tx_hash, uint16_t with_ring_signatures)
{
return xmrblocks.show_tx(tx_hash, with_ring_signatures);
return xmrblocks.show_tx(remove_bad_chars(tx_hash), with_ring_signatures);
});
CROW_ROUTE(app, "/myoutputs").methods("POST"_method)
@ -304,13 +305,13 @@ main(int ac, const char* av[])
return string("xmr address, viewkey or tx hash not provided");
}
string tx_hash = post_body["tx_hash"];
string xmr_address = post_body["xmr_address"];
string viewkey = post_body["viewkey"];
string tx_hash = remove_bad_chars(post_body["tx_hash"]);
string xmr_address = remove_bad_chars(post_body["xmr_address"]);
string viewkey = remove_bad_chars(post_body["viewkey"]);
// this will be only not empty when checking raw tx data
// using tx pusher
string raw_tx_data = post_body["raw_tx_data"];
string raw_tx_data = remove_bad_chars(post_body["raw_tx_data"]);
string domain = get_domain(req);
@ -326,8 +327,10 @@ main(int ac, const char* av[])
string domain = get_domain(req);
return xmrblocks.show_my_outputs(tx_hash, xmr_address,
viewkey, string {},
return xmrblocks.show_my_outputs(remove_bad_chars(tx_hash),
remove_bad_chars(xmr_address),
remove_bad_chars(viewkey),
string {},
domain);
});
@ -345,18 +348,21 @@ main(int ac, const char* av[])
"tx hash not provided");
}
string tx_hash = post_body["txhash"];
string tx_prv_key = post_body["txprvkey"];
string xmr_address = post_body["xmraddress"];
string tx_hash = remove_bad_chars(post_body["txhash"]);
string tx_prv_key = remove_bad_chars(post_body["txprvkey"]);
string xmr_address = remove_bad_chars(post_body["xmraddress"]);
// this will be only not empty when checking raw tx data
// using tx pusher
string raw_tx_data = post_body["raw_tx_data"];
string raw_tx_data = remove_bad_chars(post_body["raw_tx_data"]);
string domain = get_domain(req);
return xmrblocks.show_prove(tx_hash, xmr_address,
tx_prv_key, raw_tx_data, domain);
return xmrblocks.show_prove(tx_hash,
xmr_address,
tx_prv_key,
raw_tx_data,
domain);
});
@ -366,8 +372,11 @@ main(int ac, const char* av[])
string domain = get_domain(req);
return xmrblocks.show_prove(tx_hash, xmr_address,
tx_prv_key, string {}, domain);
return xmrblocks.show_prove(remove_bad_chars(tx_hash),
remove_bad_chars(xmr_address),
remove_bad_chars(tx_prv_key),
string {},
domain);
});
if (enable_pusher)
@ -388,8 +397,8 @@ main(int ac, const char* av[])
return string("Raw tx data or action not provided");
}
string raw_tx_data = post_body["rawtxdata"];
string action = post_body["action"];
string raw_tx_data = remove_bad_chars(post_body["rawtxdata"]);
string action = remove_bad_chars(post_body["action"]);
if (action == "check")
return xmrblocks.show_checkrawtx(raw_tx_data, action);
@ -423,8 +432,8 @@ main(int ac, const char* av[])
return string("Viewkey not provided. Cant decrypt key image file without it");
}
string raw_data = post_body["rawkeyimgsdata"];
string viewkey = post_body["viewkey"];
string raw_data = remove_bad_chars(post_body["rawkeyimgsdata"]);
string viewkey = remove_bad_chars(post_body["viewkey"]);
return xmrblocks.show_checkrawkeyimgs(raw_data, viewkey);
});
@ -455,8 +464,8 @@ main(int ac, const char* av[])
"key image file without it");
}
string raw_data = post_body["rawoutputkeysdata"];
string viewkey = post_body["viewkey"];
string raw_data = remove_bad_chars(post_body["rawoutputkeysdata"]);
string viewkey = remove_bad_chars(post_body["viewkey"]);
return xmrblocks.show_checkcheckrawoutput(raw_data, viewkey);
});
@ -465,7 +474,7 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/search").methods("GET"_method)
([&](const crow::request& req) {
return xmrblocks.search(string(req.url_params.get("value")));
return xmrblocks.search(remove_bad_chars(string(req.url_params.get("value"))));
});
CROW_ROUTE(app, "/mempool")
@ -496,7 +505,7 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/api/transaction/<string>")
([&](const crow::request &req, string tx_hash) {
myxmr::jsonresponse r{xmrblocks.json_transaction(tx_hash)};
myxmr::jsonresponse r{xmrblocks.json_transaction(remove_bad_chars(tx_hash))};
return r;
});
@ -504,7 +513,7 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/api/rawtransaction/<string>")
([&](const crow::request &req, string tx_hash) {
myxmr::jsonresponse r{xmrblocks.json_rawtransaction(tx_hash)};
myxmr::jsonresponse r{xmrblocks.json_rawtransaction(remove_bad_chars(tx_hash))};
return r;
});
@ -512,7 +521,7 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/api/block/<string>")
([&](const crow::request &req, string block_no_or_hash) {
myxmr::jsonresponse r{xmrblocks.json_block(block_no_or_hash)};
myxmr::jsonresponse r{xmrblocks.json_block(remove_bad_chars(block_no_or_hash))};
return r;
});
@ -520,7 +529,7 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/api/rawblock/<string>")
([&](const crow::request &req, string block_no_or_hash) {
myxmr::jsonresponse r{xmrblocks.json_rawblock(block_no_or_hash)};
myxmr::jsonresponse r{xmrblocks.json_rawblock(remove_bad_chars(block_no_or_hash))};
return r;
});
@ -534,7 +543,8 @@ main(int ac, const char* av[])
string limit = regex_search(req.raw_url, regex {"limit=\\d+"}) ?
req.url_params.get("limit") : "25";
myxmr::jsonresponse r{xmrblocks.json_transactions(page, limit)};
myxmr::jsonresponse r{xmrblocks.json_transactions(
remove_bad_chars(page), remove_bad_chars(limit))};
return r;
});
@ -551,7 +561,8 @@ main(int ac, const char* av[])
string limit = regex_search(req.raw_url, regex {"limit=\\d+"}) ?
req.url_params.get("limit") : "100000000";
myxmr::jsonresponse r{xmrblocks.json_mempool(page, limit)};
myxmr::jsonresponse r{xmrblocks.json_mempool(
remove_bad_chars(page), remove_bad_chars(limit))};
return r;
});
@ -559,7 +570,7 @@ main(int ac, const char* av[])
CROW_ROUTE(app, "/api/search/<string>")
([&](const crow::request &req, string search_value) {
myxmr::jsonresponse r{xmrblocks.json_search(search_value)};
myxmr::jsonresponse r{xmrblocks.json_search(remove_bad_chars(search_value))};
return r;
});
@ -605,7 +616,11 @@ main(int ac, const char* av[])
cerr << "Cant parse tx_prove as bool. Using default value" << endl;
}
myxmr::jsonresponse r{xmrblocks.json_outputs(tx_hash, address, viewkey, tx_prove)};
myxmr::jsonresponse r{xmrblocks.json_outputs(
remove_bad_chars(tx_hash),
remove_bad_chars(address),
remove_bad_chars(viewkey),
tx_prove)};
return r;
});
@ -635,7 +650,11 @@ main(int ac, const char* av[])
cerr << "Cant parse tx_prove as bool. Using default value" << endl;
}
myxmr::jsonresponse r{xmrblocks.json_outputsblocks(limit, address, viewkey, in_mempool_aswell)};
myxmr::jsonresponse r{xmrblocks.json_outputsblocks(
remove_bad_chars(limit),
remove_bad_chars(address),
remove_bad_chars(viewkey),
in_mempool_aswell)};
return r;
});

View file

@ -5458,7 +5458,7 @@ namespace xmreg
{"has_payment_id8" , txd.payment_id8 != null_hash8},
{"confirmations" , txd.no_confirmations},
{"payment_id" , pid_str},
{"payment_id_as_ascii" , std::regex_replace(txd.payment_id_as_ascii, e, " ")},
{"payment_id_as_ascii" , remove_bad_chars(txd.payment_id_as_ascii)},
{"payment_id8" , pid8_str},
{"extra" , txd.get_extra_str()},
{"with_ring_signatures" , static_cast<bool>(

View file

@ -41,318 +41,329 @@
namespace xmreg
{
using namespace cryptonote;
using namespace crypto;
using namespace std;
using namespace cryptonote;
using namespace crypto;
using namespace std;
namespace bf = boost::filesystem;
namespace bf = boost::filesystem;
using json = nlohmann::json;
using json = nlohmann::json;
struct outputs_visitor
struct outputs_visitor
{
std::vector<crypto::public_key >& m_output_keys;
const Blockchain& m_bch;
outputs_visitor(std::vector<crypto::public_key>& output_keys, const Blockchain& bch) :
m_output_keys(output_keys), m_bch(bch)
{
std::vector<crypto::public_key >& m_output_keys;
}
const Blockchain& m_bch;
outputs_visitor(std::vector<crypto::public_key>& output_keys, const Blockchain& bch) :
m_output_keys(output_keys), m_bch(bch)
{
}
bool handle_output(uint64_t unlock_time, const crypto::public_key &pubkey)
{
m_output_keys.push_back(pubkey);
return true;
}
};
template <typename T>
bool
parse_str_secret_key(const string& key_str, T& secret_key);
template <typename T>
bool
parse_str_secret_key(const string& key_str, std::vector<T>& secret_keys)
bool handle_output(uint64_t unlock_time, const crypto::public_key &pubkey)
{
const size_t num_keys = key_str.size() / 64;
if (num_keys * 64 != key_str.size())
return false;
secret_keys.resize(num_keys);
for (size_t i = 0; i < num_keys; ++i)
{
if (!parse_str_secret_key(key_str.substr(64*i, 64), secret_keys[i]))
return false;
}
m_output_keys.push_back(pubkey);
return true;
}
};
bool
get_tx_pub_key_from_str_hash(Blockchain& core_storage,
const string& hash_str,
transaction& tx);
template <typename T>
bool
parse_str_secret_key(const string& key_str, T& secret_key);
bool
parse_str_address(const string& address_str,
address_parse_info& address_info,
bool testnet = false);
template <typename T>
bool
parse_str_secret_key(const string& key_str, std::vector<T>& secret_keys)
{
const size_t num_keys = key_str.size() / 64;
if (num_keys * 64 != key_str.size())
return false;
secret_keys.resize(num_keys);
for (size_t i = 0; i < num_keys; ++i)
{
if (!parse_str_secret_key(key_str.substr(64*i, 64), secret_keys[i]))
return false;
}
return true;
}
inline bool
is_separator(char c);
string
print_address(const address_parse_info& address,
bool
get_tx_pub_key_from_str_hash(Blockchain& core_storage,
const string& hash_str,
transaction& tx);
bool
parse_str_address(const string& address_str,
address_parse_info& address_info,
bool testnet = false);
string
print_sig (const signature& sig);
inline bool
is_separator(char c);
string
remove_trailing_path_separator(const string& in_path);
string
print_address(const address_parse_info& address,
bool testnet = false);
bf::path
remove_trailing_path_separator(const bf::path& in_path);
string
print_sig (const signature& sig);
string
timestamp_to_str_gm(time_t timestamp, const char* format = "%F %T");
string
remove_trailing_path_separator(const string& in_path);
ostream&
operator<< (ostream& os, const address_parse_info& addr_info);
bf::path
remove_trailing_path_separator(const bf::path& in_path);
string
timestamp_to_str_gm(time_t timestamp, const char* format = "%F %T");
ostream&
operator<< (ostream& os, const address_parse_info& addr_info);
string
get_default_lmdb_folder(bool testnet = false);
string
get_default_lmdb_folder(bool testnet = false);
bool
generate_key_image(const crypto::key_derivation& derivation,
const std::size_t output_index,
const crypto::secret_key& sec_key,
const crypto::public_key& pub_key,
crypto::key_image& key_img);
bool
generate_key_image(const crypto::key_derivation& derivation,
const std::size_t output_index,
const crypto::secret_key& sec_key,
const crypto::public_key& pub_key,
crypto::key_image& key_img);
bool
get_blockchain_path(const boost::optional<string>& bc_path,
bf::path& blockchain_path,
bool testnet = false);
bool
get_blockchain_path(const boost::optional<string>& bc_path,
bf::path& blockchain_path,
bool testnet = false);
uint64_t
sum_money_in_outputs(const transaction& tx);
uint64_t
sum_money_in_outputs(const transaction& tx);
pair<uint64_t, uint64_t>
sum_money_in_outputs(const string& json_str);
pair<uint64_t, uint64_t>
sum_money_in_outputs(const string& json_str);
pair<uint64_t, uint64_t>
sum_money_in_outputs(const json& _json);
pair<uint64_t, uint64_t>
sum_money_in_outputs(const json& _json);
array<uint64_t, 4>
summary_of_in_out_rct(
const transaction& tx,
vector<pair<txout_to_key, uint64_t>>& output_pub_keys,
vector<txin_to_key>& input_key_imgs);
array<uint64_t, 4>
summary_of_in_out_rct(
const transaction& tx,
vector<pair<txout_to_key, uint64_t>>& output_pub_keys,
vector<txin_to_key>& input_key_imgs);
// this version for mempool txs from json
array<uint64_t, 6>
summary_of_in_out_rct(const json& _json);
// this version for mempool txs from json
array<uint64_t, 6>
summary_of_in_out_rct(const json& _json);
uint64_t
sum_money_in_inputs(const transaction& tx);
uint64_t
sum_money_in_inputs(const transaction& tx);
pair<uint64_t, uint64_t>
sum_money_in_inputs(const string& json_str);
pair<uint64_t, uint64_t>
sum_money_in_inputs(const string& json_str);
pair<uint64_t, uint64_t>
sum_money_in_inputs(const json& _json);
pair<uint64_t, uint64_t>
sum_money_in_inputs(const json& _json);
uint64_t
count_nonrct_inputs(const transaction& tx);
uint64_t
count_nonrct_inputs(const transaction& tx);
uint64_t
count_nonrct_inputs(const string& json_str);
uint64_t
count_nonrct_inputs(const string& json_str);
uint64_t
count_nonrct_inputs(const json& _json);
uint64_t
count_nonrct_inputs(const json& _json);
array<uint64_t, 2>
sum_money_in_tx(const transaction& tx);
array<uint64_t, 2>
sum_money_in_tx(const transaction& tx);
array<uint64_t, 2>
sum_money_in_txs(const vector<transaction>& txs);
array<uint64_t, 2>
sum_money_in_txs(const vector<transaction>& txs);
uint64_t
sum_fees_in_txs(const vector<transaction>& txs);
uint64_t
sum_fees_in_txs(const vector<transaction>& txs);
uint64_t
get_mixin_no(const transaction& tx);
uint64_t
get_mixin_no(const transaction& tx);
vector<uint64_t>
get_mixin_no(const string& json_str);
vector<uint64_t>
get_mixin_no(const string& json_str);
vector<uint64_t>
get_mixin_no(const json& _json);
vector<uint64_t>
get_mixin_no(const json& _json);
vector<uint64_t>
get_mixin_no_in_txs(const vector<transaction>& txs);
vector<uint64_t>
get_mixin_no_in_txs(const vector<transaction>& txs);
vector<pair<txout_to_key, uint64_t>>
get_ouputs(const transaction& tx);
vector<pair<txout_to_key, uint64_t>>
get_ouputs(const transaction& tx);
vector<tuple<txout_to_key, uint64_t, uint64_t>>
get_ouputs_tuple(const transaction& tx);
vector<tuple<txout_to_key, uint64_t, uint64_t>>
get_ouputs_tuple(const transaction& tx);
vector<txin_to_key>
get_key_images(const transaction& tx);
vector<txin_to_key>
get_key_images(const transaction& tx);
bool
get_payment_id(const vector<uint8_t>& extra,
crypto::hash& payment_id,
crypto::hash8& payment_id8);
bool
get_payment_id(const vector<uint8_t>& extra,
crypto::hash& payment_id,
crypto::hash8& payment_id8);
bool
get_payment_id(const transaction& tx,
crypto::hash& payment_id,
crypto::hash8& payment_id8);
bool
get_payment_id(const transaction& tx,
crypto::hash& payment_id,
crypto::hash8& payment_id8);
inline double
get_xmr(uint64_t core_amount)
{
return static_cast<double>(core_amount) / 1e12;
}
inline double
get_xmr(uint64_t core_amount)
{
return static_cast<double>(core_amount) / 1e12;
}
array<size_t, 5>
timestamp_difference(uint64_t t1, uint64_t t2);
array<size_t, 5>
timestamp_difference(uint64_t t1, uint64_t t2);
string
read(string filename);
string
read(string filename);
pair<string, double>
timestamps_time_scale(const vector<uint64_t>& timestamps,
uint64_t timeN, uint64_t resolution = 80,
uint64_t time0 = 1397818193 /* timestamp of the second block */);
pair<string, double>
timestamps_time_scale(const vector<uint64_t>& timestamps,
uint64_t timeN, uint64_t resolution = 80,
uint64_t time0 = 1397818193 /* timestamp of the second block */);
bool
decode_ringct(const rct::rctSig & rv,
const crypto::public_key pub,
const crypto::secret_key &sec,
unsigned int i,
rct::key & mask,
uint64_t & amount);
bool
decode_ringct(const rct::rctSig & rv,
const crypto::public_key pub,
const crypto::secret_key &sec,
unsigned int i,
rct::key & mask,
uint64_t & amount);
bool
decode_ringct(const rct::rctSig & rv,
const crypto::key_derivation &derivation,
unsigned int i,
rct::key & mask,
uint64_t & amount);
bool
decode_ringct(const rct::rctSig & rv,
const crypto::key_derivation &derivation,
unsigned int i,
rct::key & mask,
uint64_t & amount);
bool
url_decode(const std::string& in, std::string& out);
bool
url_decode(const std::string& in, std::string& out);
map<std::string, std::string>
parse_crow_post_data(const string& req_body);
map<std::string, std::string>
parse_crow_post_data(const string& req_body);
// from wallet2::decrypt
string
decrypt(const std::string &ciphertext,
const crypto::secret_key &skey,
bool authenticated = true);
string
decrypt(const std::string &ciphertext,
const crypto::secret_key &skey,
bool authenticated = true);
// based on
// crypto::public_key wallet2::get_tx_pub_key_from_received_outs(const tools::wallet2::transfer_details &td) const
public_key
get_tx_pub_key_from_received_outs(const transaction &tx);
public_key
get_tx_pub_key_from_received_outs(const transaction &tx);
static
string
xmr_amount_to_str(const uint64_t& xmr_amount,
string _format="{:0.12f}",
bool zero_to_question_mark=true)
static
string
xmr_amount_to_str(const uint64_t& xmr_amount,
string _format="{:0.12f}",
bool zero_to_question_mark=true)
{
string amount_str = "?";
if (!zero_to_question_mark)
{
string amount_str = "?";
if (!zero_to_question_mark)
amount_str = fmt::format(_format, XMR_AMOUNT(xmr_amount));
}
else
{
if (xmr_amount > 0 && zero_to_question_mark == true)
{
amount_str = fmt::format(_format, XMR_AMOUNT(xmr_amount));
}
else
{
if (xmr_amount > 0 && zero_to_question_mark == true)
{
amount_str = fmt::format(_format, XMR_AMOUNT(xmr_amount));
}
}
return amount_str;
}
bool
is_output_ours(const size_t& output_index,
const transaction& tx,
const public_key& pub_tx_key,
const secret_key& private_view_key,
const public_key& public_spend_key);
return amount_str;
}
bool
get_real_output_for_key_image(const key_image& ki,
const transaction& tx,
const secret_key& private_view_key,
const public_key& public_spend_key,
uint64_t output_idx,
public_key output_pub_key);
bool
is_output_ours(const size_t& output_index,
const transaction& tx,
const public_key& pub_tx_key,
const secret_key& private_view_key,
const public_key& public_spend_key);
bool
get_real_output_for_key_image(const key_image& ki,
const transaction& tx,
const secret_key& private_view_key,
const public_key& public_spend_key,
uint64_t output_idx,
public_key output_pub_key);
// based on http://stackoverflow.com/a/9943098/248823
template<typename Iterator, typename Func>
void chunks(Iterator begin,
Iterator end,
iterator_traits<string::iterator>::difference_type k,
Func f)
template<typename Iterator, typename Func>
void chunks(Iterator begin,
Iterator end,
iterator_traits<string::iterator>::difference_type k,
Func f)
{
Iterator chunk_begin;
Iterator chunk_end;
chunk_end = chunk_begin = begin;
do
{
Iterator chunk_begin;
Iterator chunk_end;
chunk_end = chunk_begin = begin;
do
{
if(std::distance(chunk_end, end) < k)
chunk_end = end;
else
std::advance(chunk_end, k);
f(chunk_begin,chunk_end);
chunk_begin = chunk_end;
}
while(std::distance(chunk_begin,end) > 0);
if(std::distance(chunk_end, end) < k)
chunk_end = end;
else
std::advance(chunk_end, k);
f(chunk_begin,chunk_end);
chunk_begin = chunk_end;
}
while(std::distance(chunk_begin,end) > 0);
}
/*
* Remove all characters in in_str that match the given
* regular expression
*/
inline string
remove_bad_chars(string const& in_str, std::regex const& rgx = std::regex {"[^a-zA-Z0-9]"})
{
return std::regex_replace(in_str, rgx, "");
}
bool
make_tx_from_json(const string& json_str, transaction& tx);
string
make_printable(const string& in_s);
bool
make_tx_from_json(const string& json_str, transaction& tx);
string
get_human_readable_timestamp(uint64_t ts);
string
make_printable(const string& in_s);
string
get_human_readable_timestamp(uint64_t ts);
// Get the median of an unordered set of numbers of arbitrary
// type without modifying the underlying dataset.
// taken from http://stackoverflow.com/a/19695285
template <typename It>
typename std::iterator_traits<It>::value_type
calc_median(It it_begin, It it_end)
{
using T = typename std::iterator_traits<It>::value_type;
std::vector<T> data(it_begin, it_end);
std::nth_element(data.begin(), data.begin() + data.size() / 2, data.end());
return data[data.size() / 2];
}
template <typename It>
typename std::iterator_traits<It>::value_type
calc_median(It it_begin, It it_end)
{
using T = typename std::iterator_traits<It>::value_type;
std::vector<T> data(it_begin, it_end);
std::nth_element(data.begin(), data.begin() + data.size() / 2, data.end());
return data[data.size() / 2];
}
void
pause_execution(uint64_t no_seconds, const string& text = "now");
void
pause_execution(uint64_t no_seconds, const string& text = "now");
}