331 lines
8.0 KiB
C++
331 lines
8.0 KiB
C++
/*
|
|
|
|
Copyright (c) 2014, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* 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.
|
|
* Neither the name of the author 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 OWNER 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.
|
|
|
|
*/
|
|
|
|
|
|
#include "libtorrent/session.hpp"
|
|
#include "libtorrent/escape_string.hpp" // for from_hex
|
|
#include "libtorrent/alert_types.hpp"
|
|
#include "libtorrent/bencode.hpp" // for bencode()
|
|
#include "libtorrent/kademlia/item.hpp" // for sign_mutable_item
|
|
#include "libtorrent/ed25519.h"
|
|
|
|
#include <boost/bind.hpp>
|
|
|
|
#include <stdlib.h>
|
|
|
|
using namespace libtorrent;
|
|
namespace lt = libtorrent;
|
|
|
|
#ifdef TORRENT_DISABLE_DHT
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
fprintf(stderr, "not built with DHT support\n");
|
|
return 1;
|
|
}
|
|
|
|
#else
|
|
|
|
void usage()
|
|
{
|
|
fprintf(stderr,
|
|
"USAGE:\ndht <command> <arg>\n\nCOMMANDS:\n"
|
|
"get <hash> - retrieves and prints out the immutable\n"
|
|
" item stored under hash.\n"
|
|
"put <string> - puts the specified string as an immutable\n"
|
|
" item onto the DHT. The resulting target hash\n"
|
|
"gen-key <key-file> - generate ed25519 keypair and save it in\n"
|
|
" the specified file\n"
|
|
"mput <key-file> <string> - puts the specified string as a mutable\n"
|
|
" object under the public key in key-file\n"
|
|
"mget <public-key> - get a mutable object under the specified\n"
|
|
" public key\n"
|
|
);
|
|
exit(1);
|
|
}
|
|
|
|
std::auto_ptr<alert> wait_for_alert(lt::session& s, int alert_type)
|
|
{
|
|
std::auto_ptr<alert> ret;
|
|
bool found = false;
|
|
while (!found)
|
|
{
|
|
s.wait_for_alert(seconds(5));
|
|
|
|
std::deque<alert*> alerts;
|
|
s.pop_alerts(&alerts);
|
|
for (std::deque<alert*>::iterator i = alerts.begin()
|
|
, end(alerts.end()); i != end; ++i)
|
|
{
|
|
if ((*i)->type() != alert_type)
|
|
{
|
|
static int spinner = 0;
|
|
static const char anim[] = {'-', '\\', '|', '/'};
|
|
printf("\r%c", anim[spinner]);
|
|
fflush(stdout);
|
|
spinner = (spinner + 1) & 3;
|
|
//print some alerts?
|
|
delete *i;
|
|
continue;
|
|
}
|
|
ret = std::auto_ptr<alert>(*i);
|
|
found = true;
|
|
}
|
|
}
|
|
printf("\n");
|
|
return ret;
|
|
}
|
|
|
|
void put_string(entry& e, boost::array<char, 64>& sig, boost::uint64_t& seq
|
|
, std::string const& salt, char const* public_key, char const* private_key
|
|
, char const* str)
|
|
{
|
|
using libtorrent::dht::sign_mutable_item;
|
|
|
|
e = std::string(str);
|
|
std::vector<char> buf;
|
|
bencode(std::back_inserter(buf), e);
|
|
++seq;
|
|
sign_mutable_item(std::pair<char const*, int>(&buf[0], buf.size())
|
|
, std::pair<char const*, int>(&salt[0], salt.size())
|
|
, seq
|
|
, public_key
|
|
, private_key
|
|
, sig.data());
|
|
}
|
|
|
|
void bootstrap(lt::session& s)
|
|
{
|
|
printf("bootstrapping\n");
|
|
wait_for_alert(s, dht_bootstrap_alert::alert_type);
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
// skip pointer to self
|
|
++argv;
|
|
--argc;
|
|
|
|
if (argc < 1) usage();
|
|
|
|
if (strcmp(argv[0], "gen-key") == 0)
|
|
{
|
|
++argv;
|
|
--argc;
|
|
if (argc < 1) usage();
|
|
|
|
unsigned char seed[32];
|
|
ed25519_create_seed(seed);
|
|
|
|
FILE* f = fopen(argv[0], "wb+");
|
|
if (f == NULL)
|
|
{
|
|
fprintf(stderr, "failed to open file for writing \"%s\": (%d) %s\n"
|
|
, argv[0], errno, strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
fwrite(seed, 1, 32, f);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
settings_pack sett;
|
|
sett.set_int(settings_pack::alert_mask, 0xffffffff);
|
|
lt::session s(sett);
|
|
|
|
s.add_dht_router(std::pair<std::string, int>("router.utorrent.com", 6881));
|
|
|
|
FILE* f = fopen(".dht", "rb");
|
|
if (f != NULL)
|
|
{
|
|
fseek(f, 0, SEEK_END);
|
|
int size = ftell(f);
|
|
fseek(f, 0, SEEK_SET);
|
|
if (size > 0)
|
|
{
|
|
std::vector<char> state;
|
|
state.resize(size);
|
|
fread(&state[0], 1, state.size(), f);
|
|
|
|
lazy_entry e;
|
|
error_code ec;
|
|
lazy_bdecode(&state[0], &state[0] + state.size(), e, ec);
|
|
if (ec)
|
|
fprintf(stderr, "failed to parse .dht file: (%d) %s\n"
|
|
, ec.value(), ec.message().c_str());
|
|
else
|
|
s.load_state(e);
|
|
}
|
|
fclose(f);
|
|
}
|
|
|
|
if (strcmp(argv[0], "get") == 0)
|
|
{
|
|
++argv;
|
|
--argc;
|
|
|
|
if (argc < 1) usage();
|
|
|
|
if (strlen(argv[0]) != 40)
|
|
{
|
|
fprintf(stderr, "the hash is expected to be 40 hex characters\n");
|
|
usage();
|
|
}
|
|
sha1_hash target;
|
|
bool ret = from_hex(argv[0], 40, (char*)&target[0]);
|
|
if (!ret)
|
|
{
|
|
fprintf(stderr, "invalid hex encoding of target hash\n");
|
|
return 1;
|
|
}
|
|
|
|
bootstrap(s);
|
|
s.dht_get_item(target);
|
|
|
|
printf("GET %s\n", to_hex(target.to_string()).c_str());
|
|
|
|
std::auto_ptr<alert> a = wait_for_alert(s, dht_immutable_item_alert::alert_type);
|
|
|
|
dht_immutable_item_alert* item = alert_cast<dht_immutable_item_alert>(a.get());
|
|
entry data;
|
|
if (item)
|
|
data.swap(item->item);
|
|
|
|
printf("%s", data.to_string().c_str());
|
|
}
|
|
else if (strcmp(argv[0], "put") == 0)
|
|
{
|
|
++argv;
|
|
--argc;
|
|
if (argc < 1) usage();
|
|
|
|
entry data;
|
|
data = std::string(argv[0]);
|
|
|
|
bootstrap(s);
|
|
sha1_hash target = s.dht_put_item(data);
|
|
|
|
printf("PUT %s\n", to_hex(target.to_string()).c_str());
|
|
|
|
wait_for_alert(s, dht_put_alert::alert_type);
|
|
}
|
|
else if (strcmp(argv[0], "mput") == 0)
|
|
{
|
|
++argv;
|
|
--argc;
|
|
if (argc < 1) usage();
|
|
|
|
FILE* f = fopen(argv[0], "rb+");
|
|
if (f == NULL)
|
|
{
|
|
fprintf(stderr, "failed to open file \"%s\": (%d) %s\n"
|
|
, argv[0], errno, strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
unsigned char seed[32];
|
|
fread(seed, 1, 32, f);
|
|
fclose(f);
|
|
|
|
++argv;
|
|
--argc;
|
|
if (argc < 1) usage();
|
|
|
|
boost::array<char, 32> public_key;
|
|
boost::array<char, 64> private_key;
|
|
ed25519_create_keypair((unsigned char*)public_key.data()
|
|
, (unsigned char*)private_key.data(), seed);
|
|
|
|
bootstrap(s);
|
|
s.dht_put_item(public_key, boost::bind(&put_string, _1, _2, _3, _4
|
|
, public_key.data(), private_key.data(), argv[0]));
|
|
|
|
printf("public key: %s\n", to_hex(std::string(public_key.data()
|
|
, public_key.size())).c_str());
|
|
|
|
wait_for_alert(s, dht_put_alert::alert_type);
|
|
}
|
|
else if (strcmp(argv[0], "mget") == 0)
|
|
{
|
|
++argv;
|
|
--argc;
|
|
if (argc < 1) usage();
|
|
|
|
int len = strlen(argv[0]);
|
|
if (len != 64)
|
|
{
|
|
fprintf(stderr, "public key is expected to be 64 hex digits\n");
|
|
return 1;
|
|
}
|
|
boost::array<char, 32> public_key;
|
|
bool ret = from_hex(argv[0], len, &public_key[0]);
|
|
if (!ret)
|
|
{
|
|
fprintf(stderr, "invalid hex encoding of public key\n");
|
|
return 1;
|
|
}
|
|
|
|
bootstrap(s);
|
|
s.dht_get_item(public_key);
|
|
|
|
std::auto_ptr<alert> a = wait_for_alert(s, dht_mutable_item_alert::alert_type);
|
|
|
|
dht_mutable_item_alert* item = alert_cast<dht_mutable_item_alert>(a.get());
|
|
entry data;
|
|
if (item)
|
|
data.swap(item->item);
|
|
|
|
printf("%s", data.to_string().c_str());
|
|
}
|
|
else
|
|
{
|
|
usage();
|
|
}
|
|
|
|
entry e;
|
|
s.save_state(e, lt::session::save_dht_state);
|
|
std::vector<char> state;
|
|
bencode(std::back_inserter(state), e);
|
|
f = fopen(".dht", "wb+");
|
|
if (f == NULL)
|
|
{
|
|
fprintf(stderr, "failed to open file .dht for writing");
|
|
return 1;
|
|
}
|
|
fwrite(&state[0], 1, state.size(), f);
|
|
fclose(f);
|
|
}
|
|
|
|
#endif
|
|
|