/* * InspIRCd -- Internet Relay Chat Daemon * * Copyright (C) 2019 Matt Schatz * Copyright (C) 2018 Chris Novakovic * Copyright (C) 2013-2014, 2016 Attila Molnar * Copyright (C) 2013 Daniel Vassdal * Copyright (C) 2012-2014, 2016-2020 Sadie Powell * Copyright (C) 2012, 2019 Robby * Copyright (C) 2009-2010 Daniel De Graaf * Copyright (C) 2008 Thomas Stagner * Copyright (C) 2007-2008 Robin Burchell * Copyright (C) 2007-2008 Craig Edwards * Copyright (C) 2007 Dennis Friis * * This file is part of InspIRCd. InspIRCd is free software: you can * redistribute it and/or modify it under the terms of the GNU General Public * License as published by the Free Software Foundation, version 2. * * This program 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 General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #pragma once #include #include #include #include #include "inspircd.h" #include "modules.h" #include "socketengine.h" #include "socket.h" #include "token_list.h" /** Structure representing a single \ in config */ class CoreExport ConfigTag : public refcountbase { ConfigItems items; public: const std::string tag; const std::string src_name; const int src_line; /** Get the value of an option, using def if it does not exist */ std::string getString(const std::string& key, const std::string& def, const TR1NS::function& validator); /** Get the value of an option, using def if it does not exist */ std::string getString(const std::string& key, const std::string& def = "", size_t minlen = 0, size_t maxlen = UINT32_MAX); /** Get the value of an option, using def if it does not exist */ long getInt(const std::string& key, long def, long min = LONG_MIN, long max = LONG_MAX); /** Get the value of an option, using def if it does not exist */ unsigned long getUInt(const std::string& key, unsigned long def, unsigned long min = 0, unsigned long max = ULONG_MAX); /** Get the value of an option, using def if it does not exist */ double getFloat(const std::string& key, double def, double min = DBL_MIN, double max = DBL_MAX); /** Get the value of an option, using def if it does not exist */ bool getBool(const std::string& key, bool def = false); /** Get the value in seconds of a duration that is in the user-friendly "1h2m3s" format, * using a default value if it does not exist or is out of bounds. * @param key The config key name * @param def Default value (optional) * @param min Minimum acceptable value (optional) * @param max Maximum acceptable value (optional) * @return The duration in seconds */ unsigned long getDuration(const std::string& key, unsigned long def, unsigned long min = 0, unsigned long max = ULONG_MAX); /** Get the value of an option * @param key The option to get * @param value The location to store the value (unmodified if does not exist) * @param allow_newline Allow newlines in the option (normally replaced with spaces) * @return true if the option exists */ bool readString(const std::string& key, std::string& value, bool allow_newline = false); std::string getTagLocation(); inline const ConfigItems& getItems() const { return items; } /** Create a new ConfigTag, giving access to the private ConfigItems item list */ static ConfigTag* create(const std::string& Tag, const std::string& file, int line, ConfigItems*& Items); private: ConfigTag(const std::string& Tag, const std::string& file, int line); }; /** Defines the server's length limits on various length-limited * items such as topics, nicknames, channel names etc. */ class ServerLimits { public: /** Maximum line length */ size_t MaxLine; /** Maximum nickname length */ size_t NickMax; /** Maximum channel length */ size_t ChanMax; /** Maximum number of modes per line */ size_t MaxModes; /** Maximum length of ident, not including ~ etc */ size_t IdentMax; /** Maximum length of a quit message */ size_t MaxQuit; /** Maximum topic length */ size_t MaxTopic; /** Maximum kick message length */ size_t MaxKick; /** Maximum real name length */ size_t MaxReal; /** Maximum away message length */ size_t MaxAway; /** Maximum hostname length */ size_t MaxHost; /** Read all limits from a config tag. Limits which aren't specified in the tag are set to a default value. * @param tag Configuration tag to read the limits from */ ServerLimits(ConfigTag* tag); /** Maximum length of a n!u\@h mask */ size_t GetMaxMask() const { return NickMax + 1 + IdentMax + 1 + MaxHost; } }; struct CommandLineConf { /** If this value is true, the owner of the * server specified -nofork on the command * line, causing the daemon to stay in the * foreground. */ bool nofork; /** If this value if true then all log * messages will be output, regardless of * the level given in the config file. * This is set with the -debug commandline * option. */ bool forcedebug; /** If this is true then log output will be * written to the logfile. This is the default. * If you put -nolog on the commandline then * the logfile will not be written. * This is meant to be used in conjunction with * -debug for debugging without filling up the * hard disk. */ bool writelog; /** If this is true, a PID file will be written * to the file given in the "file" variable of * the \ tag in the config file. This is * the default. * Passing --nopid as a command line argument * sets this to false; in this case, a PID file * will not be written, even the default PID * file that is usually written when the \ * tag is not defined in the config file. */ bool writepid; /* Whether the --runasroot option was specified at boot. */ bool runasroot; /** Saved argc from startup. */ int argc; /** Saved argv from startup. */ char** argv; }; class CoreExport OperInfo : public refcountbase { public: TokenList AllowedOperCommands; TokenList AllowedPrivs; /** Allowed user modes from oper classes. */ std::bitset<64> AllowedUserModes; /** Allowed channel modes from oper classes. */ std::bitset<64> AllowedChanModes; /** Allowed snomasks from oper classes. */ std::bitset<64> AllowedSnomasks; /** \ block used for this oper-up. May be NULL. */ reference oper_block; /** \ block used for this oper-up. Valid for local users, may be NULL on remote */ reference type_block; /** \ blocks referenced from the \ block. These define individual permissions */ std::vector > class_blocks; /** Name of the oper type; i.e. the one shown in WHOIS */ std::string name; /** Creates a new OperInfo with the specified oper type name. * @param Name The name of the oper type. */ OperInfo(const std::string& Name); /** Get a configuration item, searching in the oper, type, and class blocks (in that order) */ std::string getConfig(const std::string& key); void init(); }; /** This class holds the bulk of the runtime configuration for the ircd. * It allows for reading new config values, accessing configuration files, * and storage of the configuration data needed to run the ircd, such as * the servername, connect classes, /ADMIN data, MOTDs and filenames etc. */ class CoreExport ServerConfig { private: void CrossCheckOperClassType(); void CrossCheckConnectBlocks(ServerConfig* current); public: /** How to treat a user in a channel who is banned. */ enum BannedUserTreatment { /** Don't treat a banned user any different to normal. */ BUT_NORMAL, /** Restrict the actions of a banned user. */ BUT_RESTRICT_SILENT, /** Restrict the actions of a banned user and notify them of their treatment. */ BUT_RESTRICT_NOTIFY }; class ServerPaths { public: /** Config path */ std::string Config; /** Data path */ std::string Data; /** Log path */ std::string Log; /** Module path */ std::string Module; ServerPaths(ConfigTag* tag); std::string PrependConfig(const std::string& fn) const { return FileSystem::ExpandPath(Config, fn); } std::string PrependData(const std::string& fn) const { return FileSystem::ExpandPath(Data, fn); } std::string PrependLog(const std::string& fn) const { return FileSystem::ExpandPath(Log, fn); } std::string PrependModule(const std::string& fn) const { return FileSystem::ExpandPath(Module, fn); } }; /** Holds a complete list of all connect blocks */ typedef std::vector > ClassVector; /** Index of valid oper blocks and types */ typedef insp::flat_map > OperIndex; /** Get a configuration tag by name. If one or more tags are present then the first is returned. * @param tag The name of the tag to get. * @returns Either a tag from the config or EmptyTag. */ ConfigTag* ConfValue(const std::string& tag); /** Get a list of configuration tags by name. * @param tag The name of the tags to get. * @returns Either a list of tags from the config or an empty ConfigTagList. */ ConfigTagList ConfTags(const std::string& tag); /** An empty configuration tag. */ ConfigTag* EmptyTag; /** Error stream, contains error output from any failed configuration parsing. */ std::stringstream errstr; /** True if this configuration is valid enough to run with */ bool valid; /** Bind to IPv6 by default */ bool WildcardIPv6; /** This holds all the information in the config file, * it's indexed by tag name to a vector of key/values. */ ConfigDataHash config_data; /** This holds all extra files that have been read in the configuration * (for example, MOTD and RULES files are stored here) */ ConfigFileCache Files; /** Length limits, see definition of ServerLimits class */ ServerLimits Limits; /** Locations of various types of file (config, module, etc). */ ServerPaths Paths; /** Configuration parsed from the command line. */ CommandLineConf cmdline; /** Clones CIDR range for ipv4 (0-32) * Defaults to 32 (checks clones on all IPs separately) */ unsigned char c_ipv4_range; /** Clones CIDR range for ipv6 (0-128) * Defaults to 128 (checks on all IPs separately) */ unsigned char c_ipv6_range; /** Holds the server name of the local server * as defined by the administrator. */ std::string ServerName; /** Notice to give to users when they are banned by an XLine */ std::string XLineMessage; /* Holds the network name the local server * belongs to. This is an arbitrary field defined * by the administrator. */ std::string Network; /** Holds the description of the local server * as defined by the administrator. */ std::string ServerDesc; /** How to treat a user in a channel who is banned. */ BannedUserTreatment RestrictBannedUsers; /** The size of the read() buffer in the user * handling code, used to read data into a user's * recvQ. */ int NetBufferSize; /** The value to be used for listen() backlogs * as default. */ int MaxConn; /** If we should check for clones during CheckClass() in AddUser() * Setting this to false allows to not trigger on maxclones for users * that may belong to another class after DNS-lookup is complete. * It does, however, make the server spend more time on users we may potentially not want. */ bool CCOnConnect; /** The soft limit value assigned to the irc server. * The IRC server will not allow more than this * number of local users. */ unsigned int SoftLimit; /** Maximum number of targets for a multi target command * such as PRIVMSG or KICK */ unsigned int MaxTargets; /** The number of seconds that the server clock can skip by before server operators are warned. */ time_t TimeSkipWarn; /** True if we're going to hide ban reasons for non-opers (e.g. G-lines, * K-lines, Z-lines) */ bool HideBans; /** True if raw I/O is being logged */ bool RawLog; /** Set to a non-empty string to obfuscate server names. */ std::string HideServer; /** The full pathname and filename of the PID * file as defined in the configuration. */ std::string PID; /** The connect classes in use by the IRC server. */ ClassVector Classes; /** Default channel modes */ std::string DefaultModes; /** Custom version string, which if defined can replace the system info in VERSION. */ std::string CustomVersion; /** If set to true, provide syntax hints for unknown commands */ bool SyntaxHints; /** The name of the casemapping method used by this server. */ std::string CaseMapping; /** If set to true, the full nick!user\@host will be shown in the TOPIC command * for who set the topic last. If false, only the nick is shown. */ bool FullHostInTopic; /** Oper blocks keyed by their name */ OperIndex oper_blocks; /** Oper types keyed by their name */ OperIndex OperTypes; /** Default value for , deprecated in 3.0 */ unsigned int MaxChans; /** Default value for , deprecated in 3.0 */ unsigned int OperMaxChans; /** TS6-like server ID. * NOTE: 000...999 are usable for InspIRCd servers. This * makes code simpler. 0AA, 1BB etc with letters are reserved * for services use. */ std::string sid; /** Construct a new ServerConfig */ ServerConfig(); ~ServerConfig(); /** Get server ID as string with required leading zeroes */ const std::string& GetSID() const { return sid; } /** Retrieves the server name which should be shown to users. */ const std::string& GetServerName() const { return HideServer.empty() ? ServerName : HideServer; } /** Retrieves the server description which should be shown to users. */ const std::string& GetServerDesc() const { return HideServer.empty() ? ServerDesc : HideServer; } /** Read the entire configuration into memory * and initialize this class. All other methods * should be used only by the core. */ void Read(); /** Apply configuration changes from the old configuration. */ void Apply(ServerConfig* old, const std::string &useruid); void ApplyModules(User* user); void Fill(); /** Escapes a value for storage in a configuration key. * @param str The string to escape. * @param xml Are we using the XML config format? */ static std::string Escape(const std::string& str, bool xml = true); /** If this value is true, snotices will not stack when repeats are sent */ bool NoSnoticeStack; }; /** The background thread for config reading, so that reading from executable includes * does not block. */ class CoreExport ConfigReaderThread : public Thread { ServerConfig* Config; volatile bool done; public: const std::string TheUserUID; ConfigReaderThread(const std::string &useruid) : Config(new ServerConfig), done(false), TheUserUID(useruid) { } virtual ~ConfigReaderThread() { delete Config; } void Run() CXX11_OVERRIDE; /** Run in the main thread to apply the configuration */ void Finish(); bool IsDone() { return done; } }; /** Represents the status of a config load. */ class CoreExport ConfigStatus { public: /** Whether this is the initial config load. */ bool const initial; /** The user who initiated the config load or NULL if not initiated by a user. */ User* const srcuser; /** Initializes a new instance of the ConfigStatus class. * @param user The user who initiated the config load or NULL if not initiated by a user. * @param isinitial Whether this is the initial config load. */ ConfigStatus(User* user = NULL, bool isinitial = false) : initial(isinitial) , srcuser(user) { } };