/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2009 InspIRCd Development Team * See: http://wiki.inspircd.org/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #ifndef INSPIRCD_CONFIGREADER #define INSPIRCD_CONFIGREADER /* handy defines */ /** Determines if a channel op is exempt from given mode m, * in config of server instance s. */ #define CHANOPS_EXEMPT(s, m) (s->Config->ExemptChanOps[(unsigned char)m]) #include #include #include #include #include "inspircd.h" #include "modules.h" #include "socketengine.h" #include "socket.h" /* Required forward definitions */ class ServerConfig; class ServerLimits; class InspIRCd; class BufferedSocket; /** A set of oper types */ typedef std::map opertype_t; /** Holds an oper class. */ struct operclass_data : public classbase { /** Command list for the class */ std::string commandlist; /** Channel mode list for the class */ std::string cmodelist; /** User mode list for the class */ std::string umodelist; /** Priviledges given by this class */ std::string privs; }; /** A Set of oper classes */ typedef std::map operclass_t; /** Defines the server's length limits on various length-limited * items such as topics, nicknames, channel names etc. */ class ServerLimits { public: /** 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 GECOS (real name) length */ size_t MaxGecos; /** Maximum away message length */ size_t MaxAway; /** Creating the class initialises it to the defaults * as in 1.1's ./configure script. Reading other values * from the config will change these values. */ ServerLimits() : NickMax(31), ChanMax(64), MaxModes(20), IdentMax(12), MaxQuit(255), MaxTopic(307), MaxKick(255), MaxGecos(128), MaxAway(200) { } /** Finalises the settings by adding one. This allows for them to be used as-is * without a 'value+1' when using the std::string assignment methods etc. */ void Finalise() { NickMax++; ChanMax++; IdentMax++; MaxQuit++; MaxTopic++; MaxKick++; MaxGecos++; MaxAway++; } }; /** 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 : public classbase { private: /** Creator/owner pointer */ InspIRCd* ServerInstance; /** This variable holds the names of all * files included from the main one. This * is used to make sure that no files are * recursively included. */ std::vector include_stack; /* classes removed by this rehash */ std::vector removed_classes; /** This private method processes one line of * configutation, appending errors to errorstream * and setting error if an error has occured. */ bool ParseLine(const std::string &filename, std::string &line, long &linenumber, bool allowexeinc); /** Check that there is only one of each configuration item */ bool CheckOnce(const char* tag); void CrossCheckOperClassType(); void CrossCheckConnectBlocks(ServerConfig* current); public: /** Process an include executable directive */ bool DoPipe(const std::string &file); /** Process an include file directive */ bool DoInclude(const std::string &file, bool allowexeinc); /** 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; /** Set of included files. Do we use this any more? */ std::map IncludedFiles; /** Used to indicate who we announce invites to on a channel */ enum InviteAnnounceState { INVITE_ANNOUNCE_NONE, INVITE_ANNOUNCE_ALL, INVITE_ANNOUNCE_OPS, INVITE_ANNOUNCE_DYNAMIC }; /** Returns the creator InspIRCd pointer */ InspIRCd* GetInstance(); /** Not used any more as it is named, can probably be removed or renamed. */ int DoDownloads(); /** This holds all the information in the config file, * it's indexed by tag name to a vector of key/values. */ ConfigDataHash config_data; /** Length limits, see definition of ServerLimits class */ ServerLimits Limits; /** Clones CIDR range for ipv4 (0-32) * Defaults to 32 (checks clones on all IPs seperately) */ int c_ipv4_range; /** Clones CIDR range for ipv6 (0-128) * Defaults to 128 (checks on all IPs seperately) */ int c_ipv6_range; /** Max number of WhoWas entries per user. */ int WhoWasGroupSize; /** Max number of cumulative user-entries in WhoWas. * When max reached and added to, push out oldest entry FIFO style. */ int WhoWasMaxGroups; /** Max seconds a user is kept in WhoWas before being pruned. */ int WhoWasMaxKeep; /** Both for set(g|u)id. */ char SetUser[MAXBUF]; char SetGroup[MAXBUF]; /** Holds the server name of the local server * as defined by the administrator. */ char ServerName[MAXBUF]; /** Notice to give to users when they are Xlined */ char MoronBanner[MAXBUF]; /* Holds the network name the local server * belongs to. This is an arbitary field defined * by the administrator. */ char Network[MAXBUF]; /** Holds the description of the local server * as defined by the administrator. */ char ServerDesc[MAXBUF]; /** Holds the admin's name, for output in * the /ADMIN command. */ char AdminName[MAXBUF]; /** Holds the email address of the admin, * for output in the /ADMIN command. */ char AdminEmail[MAXBUF]; /** Holds the admin's nickname, for output * in the /ADMIN command */ char AdminNick[MAXBUF]; /** The admin-configured /DIE password */ char diepass[MAXBUF]; /** The admin-configured /RESTART password */ char restartpass[MAXBUF]; /** The hash method for *BOTH* the die and restart passwords. */ char powerhash[MAXBUF]; /** The pathname and filename of the message of the * day file, as defined by the administrator. */ char motd[MAXBUF]; /** The pathname and filename of the rules file, * as defined by the administrator. */ char rules[MAXBUF]; /** The quit prefix in use, or an empty string */ char PrefixQuit[MAXBUF]; /** The quit suffix in use, or an empty string */ char SuffixQuit[MAXBUF]; /** The fixed quit message in use, or an empty string */ char FixedQuit[MAXBUF]; /** The part prefix in use, or an empty string */ char PrefixPart[MAXBUF]; /** The part suffix in use, or an empty string */ char SuffixPart[MAXBUF]; /** The fixed part message in use, or an empty string */ char FixedPart[MAXBUF]; /** The last string found within a tag, or * an empty string. */ char DieValue[MAXBUF]; /** The DNS server to use for DNS queries */ char DNSServer[MAXBUF]; /** Pretend disabled commands don't exist. */ bool DisabledDontExist; /** This variable contains a space-seperated list * of commands which are disabled by the * administrator of the server for non-opers. */ char DisabledCommands[MAXBUF]; /** This variable identifies which usermodes have been diabled. */ char DisabledUModes[64]; /** This variable identifies which chanmodes have been disabled. */ char DisabledCModes[64]; /** The full path to the modules directory. * This is either set at compile time, or * overridden in the configuration file via * the tag. */ std::string ModPath; /** The full pathname to the executable, as * given in argv[0] when the program starts. */ std::string MyExecutable; /** The file handle of the logfile. If this * value is NULL, the log file is not open, * probably due to a permissions error on * startup (this should not happen in normal * operation!). */ FILE *log_file; /** 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 set to true, then all opers on this server are * shown with a generic 'is an IRC operator' line rather * than the oper type. Oper types are still used internally. */ bool GenericOper; /** If this value is true, banned users (+b, not extbans) will not be able to change nick * if banned on any channel, nor to message them. */ bool RestrictBannedUsers; /** If this value is true, halfops have been * enabled in the configuration file. */ bool AllowHalfop; /** If this is set to true, then mode lists (e.g * MODE #chan b) are hidden from unprivileged * users. */ bool HideModeLists[256]; /** If this is set to true, then channel operators * are exempt from this channel mode. Used for +Sc etc. */ bool ExemptChanOps[256]; /** The number of seconds the DNS subsystem * will wait before timing out any request. */ int dns_timeout; /** 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; /** 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 maximum number of /WHO results allowed * in any single /WHO command. */ int MaxWhoResults; /** True if the DEBUG loglevel is selected. */ int debugging; /** How many seconds to wait before exiting * the program when /DIE is correctly issued. */ int DieDelay; /** True if we're going to hide netsplits as *.net *.split for non-opers */ bool HideSplits; /** True if we're going to hide ban reasons for non-opers (e.g. G-Lines, * K-Lines, Z-Lines) */ bool HideBans; /** Announce invites to the channel with a server notice */ InviteAnnounceState AnnounceInvites; /** If this is enabled then operators will * see invisible (+i) channels in /whois. */ bool OperSpyWhois; /** Set to a non-empty string to obfuscate the server name of users in WHOIS */ char HideWhoisServer[MAXBUF]; /** Set to a non empty string to obfuscate nicknames prepended to a KILL. */ char HideKillsServer[MAXBUF]; /** The MOTD file, cached in a file_cache type. */ file_cache MOTD; /** The RULES file, cached in a file_cache type. */ file_cache RULES; /** 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; /** The 005 tokens of this server (ISUPPORT) * populated/repopulated upon loading or unloading * modules. */ std::string data005; /** isupport strings */ std::vector isupport; /** STATS characters in this list are available * only to operators. */ char UserStats[MAXBUF]; /** The path and filename of the ircd.log file */ std::string logpath; /** Default channel modes */ char DefaultModes[MAXBUF]; /** Custom version string, which if defined can replace the system info in VERSION. */ char CustomVersion[MAXBUF]; /** List of u-lined servers */ std::map ulines; /** Max banlist sizes for channels (the std::string is a glob) */ std::map maxbans; /** Directory where the inspircd binary resides */ std::string MyDir; /** If set to true, no user DNS lookups are to be performed */ bool NoUserDns; /** If set to true, provide syntax hints for unknown commands */ bool SyntaxHints; /** If set to true, users appear to quit then rejoin when their hosts change. * This keeps clients synchronized properly. */ bool CycleHosts; /** If set to true, prefixed channel NOTICEs and PRIVMSGs will have the prefix * added to the outgoing text for undernet style msg prefixing. */ bool UndernetMsgPrefix; /** 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; /** All oper type definitions from the config file */ opertype_t opertypes; /** All oper class definitions from the config file */ operclass_t operclass; /** Saved argv from startup */ char** argv; /** Saved argc from startup */ int argc; /** Max channels per user */ unsigned int MaxChans; /** Oper max channels per user */ 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. */ char sid[MAXBUF]; /** True if we have been told to run the testsuite from the commandline, * rather than entering the mainloop. */ bool TestSuite; /** Construct a new ServerConfig */ ServerConfig(InspIRCd* Instance); /** Get server ID as string with required leading zeroes */ std::string GetSID(); /** Update the 005 vector */ void Update005(); /** Send the 005 numerics (ISUPPORT) to a user */ void Send005(User* user); /** 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); /** Read a file into a file_cache object */ bool ReadFile(file_cache &F, const char* fname); /* Returns true if the given string starts with a windows drive letter */ bool StartsWithWindowsDriveLetter(const std::string &path); /** Load 'filename' into 'target', with the new config parser everything is parsed into * tag/key/value at load-time rather than at read-value time. */ bool LoadConf(FILE* &conf, const char* filename, bool allowexeinc); /** Load 'filename' into 'target', with the new config parser everything is parsed into * tag/key/value at load-time rather than at read-value time. */ bool LoadConf(FILE* &conf, const std::string &filename, bool allowexeinc); /** Writes 'length' chars into 'result' as a string */ bool ConfValue(const char* tag, const char* var, int index, char* result, int length, bool allow_linefeeds = false); /** Writes 'length' chars into 'result' as a string */ bool ConfValue(const char* tag, const char* var, const char* default_value, int index, char* result, int length, bool allow_linefeeds = false); /** Writes 'length' chars into 'result' as a string */ bool ConfValue(const std::string &tag, const std::string &var, int index, std::string &result, bool allow_linefeeds = false); /** Writes 'length' chars into 'result' as a string */ bool ConfValue(const std::string &tag, const std::string &var, const std::string &default_value, int index, std::string &result, bool allow_linefeeds = false); /** Tries to convert the value to an integer and write it to 'result' */ bool ConfValueInteger(const char* tag, const char* var, int index, int &result); /** Tries to convert the value to an integer and write it to 'result' */ bool ConfValueInteger(const char* tag, const char* var, const char* default_value, int index, int &result); /** Tries to convert the value to an integer and write it to 'result' */ bool ConfValueInteger(const std::string &tag, const std::string &var, int index, int &result); /** Tries to convert the value to an integer and write it to 'result' */ bool ConfValueInteger(const std::string &tag, const std::string &var, const std::string &default_value, int index, int &result); /** Returns true if the value exists and has a true value, false otherwise */ bool ConfValueBool(const char* tag, const char* var, int index); /** Returns true if the value exists and has a true value, false otherwise */ bool ConfValueBool(const char* tag, const char* var, const char* default_value, int index); /** Returns true if the value exists and has a true value, false otherwise */ bool ConfValueBool(const std::string &tag, const std::string &var, int index); /** Returns true if the value exists and has a true value, false otherwise */ bool ConfValueBool(const std::string &tag, const std::string &var, const std::string &default_value, int index); /** Returns the number of occurences of tag in the config file */ int ConfValueEnum(const char* tag); /** Returns the number of occurences of tag in the config file */ int ConfValueEnum(const std::string &tag); /** Returns the numbers of vars inside the index'th 'tag in the config file */ int ConfVarEnum(const char* tag, int index); /** Returns the numbers of vars inside the index'th 'tag in the config file */ int ConfVarEnum(const std::string &tag, int index); bool ApplyDisabledCommands(const char* data); /** Returns the fully qualified path to the inspircd directory * @return The full program directory */ std::string GetFullProgDir(); /** Clean a filename, stripping the directories (and drives) from string. * @param name Directory to tidy * @return The cleaned filename */ static const char* CleanFilename(const char* name); /** Check if a file exists. * @param file The full path to a file * @return True if the file exists and is readable. */ static bool FileExists(const char* file); /** If this value is true, invites will bypass more than just +i */ bool InvBypassModes; }; /** Types of data in the core config */ enum ConfigDataType { DT_NOTHING = 0, /* No data */ DT_INTEGER = 1, /* Integer */ DT_CHARPTR = 2, /* Char pointer */ DT_BOOLEAN = 3, /* Boolean */ DT_HOSTNAME = 4, /* Hostname syntax */ DT_NOSPACES = 5, /* No spaces */ DT_IPADDRESS = 6, /* IP address (v4, v6) */ DT_CHANNEL = 7, /* Channel name */ DT_LIMIT = 8, /* size_t */ DT_ALLOW_WILD = 64, /* Allow wildcards/CIDR in DT_IPADDRESS */ DT_ALLOW_NEWLINE = 128 /* New line characters allowed in DT_CHARPTR */ }; /** The maximum number of values in a core configuration tag. Can be increased if needed. */ #define MAX_VALUES_PER_TAG 18 /** Holds a config value, either string, integer or boolean. * Callback functions receive one or more of these, either on * their own as a reference, or in a reference to a deque of them. * The callback function can then alter the values of the ValueItem * classes to validate the settings. */ class ValueItem { /** Actual data */ std::string v; public: /** Initialize with an int */ ValueItem(int value); /** Initialize with a bool */ ValueItem(bool value); /** Initialize with a string */ ValueItem(const char* value) : v(value) { } /** Change value to a string */ void Set(const std::string &val); /** Change value to an int */ void Set(int value); /** Get value as an int */ int GetInteger(); /** Get value as a string */ const char* GetString() const; /** Get value as a string */ inline const std::string& GetValue() const { return v; } /** Get value as a bool */ bool GetBool(); }; /** The base class of the container 'ValueContainer' * used internally by the core to hold core values. */ class ValueContainerBase { public: /** Constructor */ ValueContainerBase() { } /** Destructor */ virtual ~ValueContainerBase() { } }; /** ValueContainer is used to contain pointers to different * core values such as the server name, maximum number of * clients etc. * It is specialized to hold a data type, then pointed at * a value in the ServerConfig class. When the value has been * read and validated, the Set method is called to write the * value safely in a type-safe manner. */ template class ValueContainer : public ValueContainerBase { T ServerConfig::* const vptr; public: /** Initialize with a value of type T */ ValueContainer(T ServerConfig::* const offset) : vptr(offset) { } /** Change value to type T of size s */ void Set(ServerConfig* conf, const T& value) { conf->*vptr = value; } void Set(ServerConfig* conf, const ValueItem& item); }; template<> void ValueContainer::Set(ServerConfig* conf, ValueItem const& item); class ValueContainerLimit : public ValueContainerBase { size_t ServerLimits::* const vptr; public: /** Initialize with a value of type T */ ValueContainerLimit(size_t ServerLimits::* const offset) : vptr(offset) { } /** Change value to type T of size s */ void Set(ServerConfig* conf, const size_t& value) { conf->Limits.*vptr = value; } }; /** A specialization of ValueContainer to hold a pointer to a bool */ typedef ValueContainer ValueContainerBool; /** A specialization of ValueContainer to hold a pointer to * an unsigned int */ typedef ValueContainer ValueContainerUInt; /** A specialization of ValueContainer to hold a pointer to * a char array. */ typedef ValueContainer ValueContainerChar; /** A specialization of ValueContainer to hold a pointer to * a char array. */ typedef ValueContainer ValueContainerString; /** A specialization of ValueContainer to hold a pointer to * an int */ typedef ValueContainer ValueContainerInt; /** A set of ValueItems used by multi-value validator functions */ typedef std::deque ValueList; /** A callback for validating a single value */ typedef bool (*Validator)(ServerConfig* conf, const char*, const char*, ValueItem&); /** A callback for validating multiple value entries */ typedef bool (*MultiValidator)(ServerConfig* conf, const char*, const char**, ValueList&, int*); /** A callback indicating the end of a group of entries */ typedef bool (*MultiNotify)(ServerConfig* conf, const char*); /** Holds a core configuration item and its callbacks */ struct InitialConfig { /** Tag name */ const char* tag; /** Value name */ const char* value; /** Default, if not defined */ const char* default_value; /** Value containers */ ValueContainerBase* val; /** Data types */ int datatype; /** Validation function */ Validator validation_function; }; /** Represents a deprecated configuration tag. */ struct Deprecated { /** Tag name */ const char* tag; /** Tag value */ const char* value; /** Reason for deprecation */ const char* reason; }; /** Holds a core configuration item and its callbacks * where there may be more than one item */ struct MultiConfig { /** Tag name */ const char* tag; /** One or more items within tag */ const char* items[MAX_VALUES_PER_TAG]; /** One or more defaults for items within tags */ const char* items_default[MAX_VALUES_PER_TAG]; /** One or more data types */ int datatype[MAX_VALUES_PER_TAG]; /** Validation function */ MultiValidator validation_function; }; #endif