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https://github.com/rakshasa/rtorrent.git
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Moved some stuff out of command_network.cc to make it compile faster.
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Jari Sundell
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// rTorrent - BitTorrent client
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// Copyright (C) 2005-2011, Jari Sundell
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// In addition, as a special exception, the copyright holders give
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// permission to link the code of portions of this program with the
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// OpenSSL library under certain conditions as described in each
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// individual source file, and distribute linked combinations
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// including the two.
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//
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// You must obey the GNU General Public License in all respects for
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// all of the code used other than OpenSSL. If you modify file(s)
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// with this exception, you may extend this exception to your version
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// of the file(s), but you are not obligated to do so. If you do not
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// wish to do so, delete this exception statement from your version.
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// If you delete this exception statement from all source files in the
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// program, then also delete it here.
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//
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// Contact: Jari Sundell <jaris@ifi.uio.no>
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//
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// Skomakerveien 33
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// 3185 Skoppum, NORWAY
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#include "config.h"
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#include <fstream>
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#include <rak/path.h>
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#include <torrent/peer/peer_list.h>
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#include <torrent/utils/log.h>
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#include <torrent/utils/option_strings.h>
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#include "globals.h"
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#include "command_helpers.h"
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void
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ipv4_filter_parse(const char* address, int value) {
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uint32_t ip_values[4] = { 0, 0, 0, 0 };
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unsigned int block = rpc::ipv4_table::mask_bits;
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char ip_dot;
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int values_read;
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if ((values_read = sscanf(address, "%u%1[.]%u%1[.]%u%1[.]%u/%u",
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ip_values + 0, &ip_dot,
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ip_values + 1, &ip_dot,
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ip_values + 2, &ip_dot,
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ip_values + 3,
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&block)) < 2 ||
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// Make sure the dot is included.
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(values_read < 7 && values_read % 2) ||
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ip_values[0] >= 256 ||
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ip_values[1] >= 256 ||
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ip_values[2] >= 256 ||
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ip_values[3] >= 256 ||
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block > rpc::ipv4_table::mask_bits)
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throw torrent::input_error("Invalid address format.");
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// E.g. '10.10.' will be '10.10.0.0/16'.
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if (values_read < 7)
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block = 8 * (values_read / 2);
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torrent::PeerList::ipv4_filter()->insert((ip_values[0] << 24) + (ip_values[1] << 16) + (ip_values[2] << 8) + ip_values[3],
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rpc::ipv4_table::mask_bits - block, value);
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}
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torrent::Object
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apply_ip_tables_insert_table(const std::string& args) {
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if (ip_tables.find(args) != ip_tables.end())
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throw torrent::input_error("IP table already exists.");
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ip_tables.insert(args);
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return torrent::Object();
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}
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torrent::Object
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apply_ip_tables_get(const torrent::Object::list_type& args) {
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if (args.size() != 2)
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throw torrent::input_error("Incorrect number of arguments.");
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torrent::Object::list_const_iterator args_itr = args.begin();
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const std::string& name = (args_itr++)->as_string();
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const std::string& address = (args_itr++)->as_string();
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// Move to a helper function, add support for addresses.
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uint32_t ip_values[4];
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if (sscanf(address.c_str(), "%u.%u.%u.%u",
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ip_values + 0, ip_values + 1, ip_values + 2, ip_values + 3) != 4)
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throw torrent::input_error("Invalid address format.");
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rpc::ip_table_list::iterator table_itr = ip_tables.find(name);
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if (table_itr == ip_tables.end())
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throw torrent::input_error("Could not find ip table.");
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return table_itr->table.at((ip_values[0] << 24) + (ip_values[1] << 16) + (ip_values[2] << 8) + ip_values[3]);
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}
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torrent::Object
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apply_ip_tables_add_address(const torrent::Object::list_type& args) {
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if (args.size() != 3)
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throw torrent::input_error("Incorrect number of arguments.");
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torrent::Object::list_const_iterator args_itr = args.begin();
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const std::string& name = (args_itr++)->as_string();
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const std::string& address = (args_itr++)->as_string();
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const std::string& value_str = (args_itr++)->as_string();
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// Move to a helper function, add support for addresses.
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uint32_t ip_values[4];
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unsigned int block = rpc::ipv4_table::mask_bits;
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if (sscanf(address.c_str(), "%u.%u.%u.%u/%u",
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ip_values + 0, ip_values + 1, ip_values + 2, ip_values + 3, &block) < 4 ||
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block > rpc::ipv4_table::mask_bits)
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throw torrent::input_error("Invalid address format.");
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int value;
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if (value_str == "block")
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value = 1;
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else
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throw torrent::input_error("Invalid value.");
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rpc::ip_table_list::iterator table_itr = ip_tables.find(name);
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if (table_itr == ip_tables.end())
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throw torrent::input_error("Could not find ip table.");
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table_itr->table.insert((ip_values[0] << 24) + (ip_values[1] << 16) + (ip_values[2] << 8) + ip_values[3],
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rpc::ipv4_table::mask_bits - block, value);
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return torrent::Object();
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}
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//
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// IPv4 filter functions:
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//
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torrent::Object
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apply_ipv4_filter_size_data() {
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return torrent::PeerList::ipv4_filter()->sizeof_data();
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}
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torrent::Object
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apply_ipv4_filter_get(const std::string& args) {
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// Move to a helper function, add support for addresses.
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uint32_t ip_values[4];
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if (sscanf(args.c_str(), "%u.%u.%u.%u",
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ip_values + 0, ip_values + 1, ip_values + 2, ip_values + 3) != 4)
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throw torrent::input_error("Invalid address format.");
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return torrent::PeerList::ipv4_filter()->at((ip_values[0] << 24) + (ip_values[1] << 16) + (ip_values[2] << 8) + ip_values[3]);
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}
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torrent::Object
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apply_ipv4_filter_add_address(const torrent::Object::list_type& args) {
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if (args.size() != 2)
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throw torrent::input_error("Incorrect number of arguments.");
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ipv4_filter_parse(args.front().as_string().c_str(),
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torrent::option_find_string(torrent::OPTION_IP_FILTER, args.back().as_string().c_str()));
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return torrent::Object();
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}
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torrent::Object
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apply_ipv4_filter_load(const torrent::Object::list_type& args) {
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if (args.size() != 2)
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throw torrent::input_error("Incorrect number of arguments.");
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torrent::Object::list_const_iterator args_itr = args.begin();
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std::fstream file(rak::path_expand(args.front().as_string()).c_str(), std::ios::in);
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if (!file.is_open())
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throw torrent::input_error("Could not open ip filter file: " + args.front().as_string());
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int value = torrent::option_find_string(torrent::OPTION_IP_FILTER, args.back().as_string().c_str());
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char buffer[4096];
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unsigned int lineNumber = 0;
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try {
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while (file.good() && !file.getline(buffer, 4096).fail()) {
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if (file.gcount() == 0)
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throw torrent::internal_error("parse_command_file(...) file.gcount() == 0.");
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int lineLength = file.gcount() - 1;
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// In case we are at the end of the file and the last character is
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// not a line feed, we'll just increase the read character count so
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// that the last would also be included in option line.
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if (file.eof() && file.get() != '\n')
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lineLength++;
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lineNumber++;
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if (buffer[0] == '\0' || buffer[0] == '#')
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continue;
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ipv4_filter_parse(buffer, value);
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}
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} catch (torrent::input_error& e) {
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snprintf(buffer, 2048, "Error in ip filter file: %s:%u: %s", args.front().as_string().c_str(), lineNumber, e.what());
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throw torrent::input_error(buffer);
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}
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lt_log_print(torrent::LOG_CONNECTION_INFO, "Loaded %u %s address blocks (%u kb in-memory) from '%s'.",
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lineNumber,
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args.back().as_string().c_str(),
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torrent::PeerList::ipv4_filter()->sizeof_data() / 1024,
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args.front().as_string().c_str());
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return torrent::Object();
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}
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void
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initialize_command_ip() {
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CMD2_ANY_STRING ("ip_tables.insert_table", std::bind(&apply_ip_tables_insert_table, std::placeholders::_2));
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CMD2_ANY_LIST ("ip_tables.get", std::bind(&apply_ip_tables_get, std::placeholders::_2));
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CMD2_ANY_LIST ("ip_tables.add_address", std::bind(&apply_ip_tables_add_address, std::placeholders::_2));
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CMD2_ANY ("ipv4_filter.size_data", std::bind(&apply_ipv4_filter_size_data));
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CMD2_ANY_STRING ("ipv4_filter.get", std::bind(&apply_ipv4_filter_get, std::placeholders::_2));
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CMD2_ANY_LIST ("ipv4_filter.add_address", std::bind(&apply_ipv4_filter_add_address, std::placeholders::_2));
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CMD2_ANY_LIST ("ipv4_filter.load", std::bind(&apply_ipv4_filter_load, std::placeholders::_2));
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}
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