Cvirtual_binary Cbt_tracker_accounts::dump() const { int cb_d = 4; for (const_iterator i = begin(); i != end(); i++) cb_d += i->pre_dump(); Cvirtual_binary d; Cstream_writer w(d.write_start(cb_d)); w.write_int(4, size()); for (const_iterator i = begin(); i != end(); i++) i->dump(w); assert(w.w() == d.end()); return d; }
void Cdlg_make_torrent::OnSave() { if (!UpdateData()) return; m_name.TrimRight(" "); m_tracker.TrimRight(" "); CFileDialog dlg(false, "torrent", m_name + ".torrent", OFN_ENABLESIZING | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT | OFN_PATHMUSTEXIST, "Torrents|*.torrent|", this); if (IDOK != dlg.DoModal()) return; CWaitCursor wc; AfxGetApp()->WriteProfileString(m_strRegStore, "tracker", m_tracker); AfxGetApp()->WriteProfileString(m_strRegStore, "trackers", m_trackers); AfxGetApp()->WriteProfileInt(m_strRegStore, "use_merkle", m_use_merkle); int cb_piece = 1 << 20; if (!m_use_merkle) { long long cb_total = 0; for (t_map::const_iterator i = m_map.begin(); i != m_map.end(); i++) cb_total += i->second.size; cb_piece = 256 << 10; while (cb_total / cb_piece > 4 << 10) cb_piece <<= 1; } typedef std::set<std::string> t_set; t_set set; for (t_map::const_iterator i = m_map.begin(); i != m_map.end(); i++) set.insert(i->second.name); Cbvalue files; std::string pieces; Cvirtual_binary d; byte* w = d.write_start(cb_piece); for (t_set::const_iterator i = set.begin(); i != set.end(); i++) { int f = open(i->c_str(), _O_BINARY | _O_RDONLY); if (!f) continue; long long cb_f = 0; std::string merkle_hash; int cb_d; if (m_use_merkle) { typedef std::map<int, std::string> t_map; t_map map; char d[1025]; while (cb_d = read(f, d + 1, 1024)) { if (cb_d < 0) break; *d = 0; std::string h = Csha1(const_memory_range(d, cb_d + 1)).read(); *d = 1; int i; for (i = 0; map.find(i) != map.end(); i++) { memcpy(d + 1, map.find(i)->second.c_str(), 20); memcpy(d + 21, h.c_str(), 20); h = Csha1(const_memory_range(d, 41)).read(); map.erase(i); } map[i] = h; cb_f += cb_d; } *d = 1; while (map.size() > 1) { memcpy(d + 21, map.begin()->second.c_str(), 20); map.erase(map.begin()); memcpy(d + 1, map.begin()->second.c_str(), 20); map.erase(map.begin()); map[0] = Csha1(const_memory_range(d, 41)).read(); } if (!map.empty()) merkle_hash = map.begin()->second; } else { while (cb_d = read(f, w, d.end() - w)) { if (cb_d < 0) break; w += cb_d; if (w == d.end()) { pieces += Csha1(const_memory_range(d, w - d)).read(); w = d.data_edit(); } cb_f += cb_d; } } close(f); files.l(merkle_hash.empty() ? Cbvalue().d(bts_length, cb_f).d(bts_path, Cbvalue().l(base_name(*i))) : Cbvalue().d(bts_merkle_hash, merkle_hash).d(bts_length, cb_f).d(bts_path, Cbvalue().l(base_name(*i)))); } if (w != d) pieces += Csha1(const_memory_range(d, w - d)).read(); Cbvalue info; info.d(bts_piece_length, cb_piece); if (!pieces.empty()) info.d(bts_pieces, pieces); if (m_map.size() == 1) { if (m_use_merkle) info.d(bts_merkle_hash, files.l().front()[bts_merkle_hash]); info.d(bts_length, files.l().front()[bts_length]); info.d(bts_name, files.l().front()[bts_path].l().front()); } else { info.d(bts_files, files); info.d(bts_name, static_cast<std::string>(m_name)); } Cbvalue torrent; torrent.d(bts_announce, static_cast<std::string>(m_tracker)); if (!m_trackers.IsEmpty()) torrent.d(bts_announce_list, parse_trackers(static_cast<std::string>(m_trackers))); torrent.d(bts_info, info); Cvirtual_binary s = torrent.read(); if (m_use_merkle) s = gzip(s); s.save(static_cast<std::string>(dlg.GetPathName())); m_torrent_fname = dlg.GetPathName(); EndDialog(IDOK); }
bool Cbt_hasher::run(Cbt_file& f) { if (m_i >= f.m_pieces.size()) return false; if (!m_i) m_sub_file = f.m_sub_files.begin(); Cbt_piece& piece = f.m_pieces[m_i]; Cvirtual_binary d; if (m_validate) { if (f.m_merkle) { bool root_valid = m_sub_file->merkle_tree().root().string() == m_sub_file->merkle_hash(); d.write_start(piece.size()); piece.valid(!f.read_data(f.mcb_piece * m_i, d)); for (const byte* r = d; r < d.end(); r += 0x8000) { std::string h = Cmerkle_tree::compute_root(const_memory_range(r, std::min(r + 0x8000, d.end()))); if (root_valid) { if (piece.valid() && (!m_sub_file->merkle_tree().has(m_j) || h != m_sub_file->merkle_tree().get(m_j).string())) piece.valid(false); } else m_sub_file->merkle_tree().set(m_j, h); m_j++; } } else { d.write_start(piece.size()); piece.valid(!f.read_data(f.mcb_piece * m_i, d) && !memcmp(Csha1(d).read().data(), piece.m_hash, 20)); } } if (!piece.valid()) f.m_left += piece.size(); int cb0 = piece.size(); while (cb0) { int cb1 = min(cb0, m_sub_file->size() - m_offset); if (!piece.valid()) m_sub_file->left(m_sub_file->left() + cb1); cb0 -= cb1; m_offset += cb1; if (m_offset == m_sub_file->size()) { if (f.m_merkle && m_sub_file->merkle_tree().root().string() != m_sub_file->merkle_hash()) { Cbt_piece* piece = &f.m_pieces.front() + m_sub_file->offset() / f.mcb_piece; for (int i = 0; i < m_sub_file->c_pieces(f.mcb_piece); i++) { if (piece->valid()) f.m_left += piece->size(); piece->valid(false); piece++; } m_sub_file->left(m_sub_file->size()); m_sub_file->merkle_tree().invalidate(); m_sub_file->merkle_tree().root(m_sub_file->merkle_hash()); } if (!m_sub_file->left()) { m_sub_file->close(); m_sub_file->open(f.m_name, O_RDONLY); } m_j = 0; m_offset = 0; m_sub_file++; } } m_i++; return true; }