/* Prototypes and external variable declarations.
 *
 * (C) 2003-2010 Anope Team
 * Contact us at team@anope.org
 *
 * Please read COPYING and README for furhter details.
 *
 * Based on the original code of Epona by Lara.
 * Based on the original code of Services by Andy Church.
 *
 * $Id$
 *
 */

#ifndef EXTERN_H
#define EXTERN_H

#define E extern CoreExport
#define EI extern DllExport

#include "slist.h"
#include "hashcomp.h"

E void ModuleRunTimeDirCleanUp();


E char *uplink;

/* IRC Variables */

E IRCDVar *ircd;
E int UseTSMODE; /* hack to get around bahamut clones that don't send TSMODE */
E IRCDProto *ircdproto;

/**** actions.c ****/

E void kill_user(const std::string &source, const std::string &user, const std::string &reason);
E bool bad_password(User *u);
E void sqline(const std::string &mask, const std::string &reason);
E void common_unban(ChannelInfo *ci, const std::string &nick);

/**** botserv.c ****/

E BotInfo *botlists[256];
E int nbots;
E void get_botserv_stats(long *nrec, long *memuse);
E void bs_init();
E void botserv(User *u, char *buf);
E void botmsgs(User *u, BotInfo *bi, char *buf);
E void botchanmsgs(User *u, ChannelInfo *ci, char *buf);
E BotInfo *findbot(const std::string &nick);

/** Finds a pseudoclient, given a UID. Useful for TS6 protocol modules.
 * @param uid The UID to search for
 * @return The pseudoclient structure, or NULL if one could not be found
 */
E void bot_join(ChannelInfo *ci);
E char *normalizeBuffer(const char *);
E void insert_bot(BotInfo * bi);

E void bot_raw_ban(User * requester, ChannelInfo * ci, char *nick, const char *reason);
E void bot_raw_kick(User * requester, ChannelInfo * ci, char *nick, const char *reason);
E void bot_raw_mode(User * requester, ChannelInfo * ci, const char *mode, char *nick);

/**** channels.c ****/

E Channel *chanlist[1024];

E void get_channel_stats(long *nrec, long *memuse);
E Channel *findchan(const char *chan);
E Channel *firstchan();
E Channel *nextchan();

E void ChanSetInternalModes(Channel *c, int ac, const char **av);

E User *nc_on_chan(Channel * c, NickCore * nc);

E char *chan_get_modes(Channel * chan, int complete, int plus);

E int get_access_level(ChannelInfo * ci, NickAlias * na);
E const char *get_xop_level(int level);

E void do_cmode(const char *source, int ac, const char **av);
E void do_join(const char *source, int ac, const char **av);
E void do_kick(const std::string &source, int ac, const char **av);
E void do_part(const char *source, int ac, const char **av);
E void do_topic(const char *source, int ac, const char **av);
E void MassChannelModes(BotInfo *bi, const std::string &modes);

E void chan_set_correct_modes(User * user, Channel * c, int give_modes);
E void restore_unsynced_topics();

E Entry *entry_create(char *mask);
E Entry *entry_add(EList *list, const char *mask);
E void entry_delete(EList *list, Entry *e);
E EList *list_create();
E int entry_match(Entry *e, const ci::string &nick, const ci::string &user, const ci::string &host, uint32 ip);
E int entry_match_mask(Entry *e, const char *mask, uint32 ip);
E Entry *elist_match(EList *list, const char *nick, const char *user, const char *host, uint32 ip);
E Entry *elist_match_mask(EList *list, const char *mask, uint32 ip);
E Entry *elist_match_user(EList *list, User *u);
E Entry *elist_find_mask(EList *list, const char *mask);
E long get_memuse(EList *list);


#define whosends(ci) ((!(ci) || !((ci)->botflags.HasFlag(BS_SYMBIOSIS)) || !(ci)->bi || !(ci)->c || (ci)->c->users.size() < Config.BSMinUsers) ? findbot(Config.s_ChanServ) : (ci)->bi)

/**** chanserv.c ****/

E ChannelInfo *chanlists[256];
E LevelInfo levelinfo[];

E void get_chanserv_stats(long *nrec, long *memuse);

E void alpha_insert_chan(ChannelInfo * ci);
E void reset_levels(ChannelInfo * ci);
E void cs_init();
E void chanserv(User * u, char *buf);
E void expire_chans();
E void cs_remove_nick(const NickCore * nc);

E void check_modes(Channel * c);
E int check_valid_admin(User * user, Channel * chan, int servermode);
E int check_valid_op(User * user, Channel * chan, int servermode);
E int check_should_op(User * user, char *chan);
E int check_should_voice(User * user, char *chan);
E int check_should_halfop(User * user, char *chan);
E int check_should_owner(User * user, char *chan);
E int check_should_protect(User * user, char *chan);
E void record_topic(const char *chan);
E void restore_topic(const char *chan);
E int check_topiclock(Channel * c, time_t topic_time);

E ChannelInfo *cs_findchan(const std::string &chan);
E int check_access(User * user, ChannelInfo * ci, int what);
E bool IsFounder(User *user, ChannelInfo *ci);
E bool IsRealFounder(User *user, ChannelInfo *ci);
E int get_access(User *user, ChannelInfo *ci);
E void update_cs_lastseen(User * user, ChannelInfo * ci);
E int get_idealban(ChannelInfo * ci, User * u, char *ret, int retlen);
E AutoKick *is_stuck(ChannelInfo * ci, const char *mask);
E void stick_mask(ChannelInfo * ci, AutoKick * akick);
E void stick_all(ChannelInfo * ci);

E int levelinfo_maxwidth;
E char *get_mlock_modes(ChannelInfo * ci, int complete);

/**** compat.c ****/

#if !HAVE_STRICMP && !HAVE_STRCASECMP
E int stricmp(const char *s1, const char *s2);
E int strnicmp(const char *s1, const char *s2, size_t len);
#endif
#ifdef _WIN32
char *sockstrerror(int error);
#endif

/**** config.c ****/

E std::string services_conf;
E ServerConfig Config;
E int read_config(int reload);

/* hostserv.c */
E void do_on_id(User *u);
E void hostserv(User *u, char *buf);
E void HostServSyncVhosts(NickAlias *na);

/**** encrypt.c ****/
E int enc_encrypt(const std::string &src, std::string &dest);
E int enc_encrypt_in_place(std::string &buf);
E int enc_decrypt(const std::string &src, std::string &dest);
E int enc_check_password(std::string &plaintext, std::string &password);

/**** hostserv.c  ****/
E void get_hostserv_stats(long *nrec, long *memuse);
E void hostserv_init();

/**** init.c ****/

E void introduce_user(const std::string &user);
E bool GetCommandLineArgument(const std::string &name, char shortname = 0);
E bool GetCommandLineArgument(const std::string &name, char shortname, std::string &param);
E int init_primary(int ac, char **av);
E int init_secondary(int ac, char **av);
E Uplink *uplink_server;

/**** ircd.c ****/
E void pmodule_ircd_proto(IRCDProto *);
E void pmodule_ircd_var(IRCDVar * ircdvar);
E void pmodule_ircd_version(const char *version);
E void pmodule_ircd_useTSMode(int use);

/**** language.c ****/

E char **langtexts[NUM_LANGS];
E char *langnames[NUM_LANGS];
E int langlist[NUM_LANGS];

E void lang_init();
E int strftime_lang(char *buf, int size, User * u, int format, struct tm *tm);
E void syntax_error(char *service, User * u, const char *command, int msgnum);
E const char *getstring(NickAlias *na, int index);
E const char *getstring(NickCore *nc, int index);
E const char *getstring(User *nc, int index);
E const char *getstring(int index);


/**** log.c ****/

E int open_log();
E void close_log();
E void log_perror(const char *fmt, ...)		FORMAT(printf,1,2);
E void fatal(const char *fmt, ...)		FORMAT(printf,1,2);
E void fatal_perror(const char *fmt, ...)	FORMAT(printf,1,2);

/**** mail.c ****/

E MailInfo *MailBegin(User *u, NickCore *nc, char *subject, char *service);
E MailInfo *MailRegBegin(User *u, NickRequest *nr, char *subject, char *service);
E MailInfo *MailMemoBegin(NickCore * nc);
E void MailEnd(MailInfo *mail);
E void MailReset(User *u, NickCore *nc);
E int MailValidate(const char *email);

/**** main.c ****/

E const char version_number[];
E const char version_number_dotted[];
E const char version_build[];
E char *version_protocol;
E const char version_flags[];

E std::string services_dir;
E std::string log_filename;
E int   debug;
E int   readonly;
E bool LogChan;
E int   nofork;
E int   forceload;
E int   nothird;
E int	noexpire;
E int   protocoldebug;

E int   is44;
E int   quitting;
E int   shutting_down;
E const char *quitmsg;
E int   save_data;
E int   got_alarm;
E time_t start_time;

E Socket *UplinkSock;

E void save_databases();
E void expire_all();
E void sighandler(int signum);
E void do_restart_services();

/**** memory.c ****/

E void *smalloc(long size);
E void *scalloc(long elsize, long els);
E void *srealloc(void *oldptr, long newsize);
E char *sstrdup(const char *s);


/**** memoserv.c ****/

E void ms_init();
E void memoserv(User * u, char *buf);
E void check_memos(User * u);
E MemoInfo *getmemoinfo(const char *name, int *ischan, int *isforbid);
E void memo_send(User * u, const char *name, const char *text, int z);
E int delmemo(MemoInfo * mi, int num);

/**** messages.c ****/

E int m_nickcoll(const char *user);
E int m_away(const char *source, const char *msg);
E int m_kill(const std::string &nick, const char *msg);
E int m_motd(const char *source);
E int m_privmsg(const char *source, const std::string &receiver, const char *msg);
E int m_stats(const char *source, int ac, const char **av);
E int m_whois(const char *source, const char *who);
E int m_time(const char *source, int ac, const char **av);
E int m_version(const char *source, int ac, const char **av);


/**** misc.c ****/

E int toupper(char);
E int tolower(char);
E char *strscpy(char *d, const char *s, size_t len);
#ifndef HAVE_STRLCPY
E size_t strlcpy(char *, const char *, size_t);
#endif
#ifndef HAVE_STRLCAT
E size_t strlcat(char *, const char *, size_t);
#endif
E const char *stristr(const char *s1, const char *s2);
E char *strnrepl(char *s, int32 size, const char *old, const char *nstr);
E const char *merge_args(int argc, char **argv);
E const char *merge_args(int argc, const char **argv);

E time_t dotime(const char *s);
E const char *duration(NickCore *nc, char *buf, int bufsize, time_t seconds);
E const char *expire_left(NickCore *nc, char *buf, int len, time_t expires);
E int doValidHost(const char *host, int type);

typedef int (*range_callback_t) (User * u, int num, va_list args);
E int process_numlist(const char *numstr, int *count_ret,
					  range_callback_t callback, User * u, ...);

E int isValidHost(const char *host, int type);
E int isvalidchar(const char c);

E char *myStrGetToken(const char *str, const char dilim, int token_number);
E char *myStrGetOnlyToken(const char *str, const char dilim,
		int token_number);
E char *myStrSubString(const char *src, int start, int end);
E char *myStrGetTokenRemainder(const char *str, const char dilim,
		int token_number);
E char *stripModePrefix(const char *str);
E int myNumToken(const char *str, const char dilim);
E void doCleanBuffer(char *str);
E void EnforceQlinedNick(const std::string &nick, const char *killer);
E int nickIsServices(const char *nick, int bot);

E void add_entropy_userkeys();
E void rand_init();
E unsigned char getrandom8();
E uint16 getrandom16();
E uint32 getrandom32();

E char *str_signed(unsigned char *str);

E void ntoa(struct in_addr addr, char *ipaddr, int len);

E std::list<std::string> BuildStringList(const std::string &);
E std::list<ci::string> BuildStringList(const ci::string &);
E std::vector<std::string> BuildStringVector(const std::string &);

E void binary_to_hex(unsigned char *bin, char *hex, int length);

E uint32 cidr_to_netmask(uint16 cidr);
E uint16 netmask_to_cidr(uint32 mask);

E int str_is_wildcard(const char *str);
E int str_is_pure_wildcard(const char *str);

E uint32 str_is_ip(char *str);
E int str_is_cidr(char *str, uint32 * ip, uint32 * mask, char **host);

/**** modes.cpp ****/
/* Number of generic modes we support */
E unsigned GenericChannelModes, GenericUserModes;
E std::bitset<128> DefMLockOn;
E std::bitset<128> DefMLockOff;
E std::map<ChannelModeName, std::string> DefMLockParams;
/* Modes to set on bots when they join the channel */
E std::list<ChannelModeStatus *> BotModes;
E void SetDefaultMLock();

/**** modules.c ****/
E void modules_unload_all(bool unload_proto);	/* Read warnings near function source */

/**** nickserv.c ****/

E NickAlias *nalists[1024];
E NickCore *nclists[1024];
E NickRequest *nrlists[1024];
E NickRequest *findrequestnick(const char *nick);
E void insert_requestnick(NickRequest * nr);
E void alpha_insert_alias(NickAlias * na);
E void insert_core(NickCore * nc);
E void get_aliases_stats(long *nrec, long *memuse);
E void get_core_stats(long *nrec, long *memuse);
E void change_core_display(NickCore * nc);
E void change_core_display(NickCore * nc, const char *newdisplay);
E int do_setmodes(User * u);

E void ns_init();
E void nickserv(User * u, char *buf);
E int validate_user(User * u);
E void expire_nicks();
E void expire_requests();
E NickAlias *findnick(const char *nick);
E NickAlias *findnick(const std::string &nick);
E NickCore  *findcore(const char *nick);
E bool is_on_access(User *u, NickCore *nc);

/**** operserv.c  ****/

E SList akills, sglines, sqlines, szlines;

E int DefConModesSet;
E Flags<ChannelModeName> DefConModesOn;
E Flags<ChannelModeName> DefConModesOff;
E std::map<ChannelModeName, std::string> DefConModesOnParams;
E bool SetDefConParam(ChannelModeName, std::string &);
E bool GetDefConParam(ChannelModeName, std::string *);
E void UnsetDefConParam(ChannelModeName);

E void operserv(User *u, char *buf);
E void os_init();

E int add_akill(User *u, const char *mask, const char *by, const time_t expires, const char *reason);
E int check_akill(const char *nick, const char *username, const char *host, const char *vhost, const char *ip);
E void expire_akills();
E void oper_global(char *nick, const char *fmt, ...);

E int add_sgline(User *u, const char *mask, const char *by, time_t expires, const char *reason);
E int check_sgline(const char *nick, const char *realname);
E void expire_sglines();

E int add_sqline(User *u, const char *mask, const char *by, time_t expires, const char *reason);
E int check_sqline(const char *nick, int nick_change);
E void expire_sqlines();
E int check_chan_sqline(const char *chan);

E int add_szline(User * u, const char *mask, const char *by,
				 time_t expires, const char *reason);
E void expire_szlines();
E int check_szline(const char *nick, char *ip);

E Server *server_global(Server * s, char *msg);

E std::vector<NewsItem *> News;

E bool CheckDefCon(DefconLevel Level);
E bool CheckDefCon(int level, DefconLevel Level);
E void AddDefCon(int level, DefconLevel Level);
E void DelDefCon(int level, DefconLevel Level);
E std::vector<std::bitset<32> > DefCon;

/**** process.c ****/

E int allow_ignore;
E IgnoreData *ignore;

E void add_ignore(const char *nick, time_t delta);
E IgnoreData *get_ignore(const char *nick);
E int delete_ignore(const char *nick);
E int clear_ignores();

E int split_buf(char *buf, const char ***argv, int colon_special);
E void process(const std::string &buf);

/**** send.c ****/

E void send_cmd(const char *source, const char *fmt, ...) FORMAT(printf,2,3);
E void send_cmd(const std::string &source, const char *fmt, ...) FORMAT(printf,2,3);

E void notice_server(char *source, Server * s, const char *fmt, ...)
	FORMAT(printf,3,4);

E void notice_list(const char *source, const char *dest, char **text); // MARK_DEPRECATED;
E void notice_lang(const std::string &source, User *dest, int message, ...); // MARK_DEPRECATED;
E void notice_help(const char *source, User *dest, int message, ...); // MARK_DEPRECATED;


/**** servers.c ****/

E Server *servlist;
E Server *me_server;
E Server *serv_uplink;
E Flags<CapabType> Capab;
E CapabInfo Capab_Info[];

E Server *first_server(ServerFlag flag);
E Server *next_server(ServerFlag flag);

E void CapabParse(int ac, const char **av);
E int is_ulined(const char *server);
E int is_sync(Server *server);

E Server *new_server(Server * uplink, const char *name, const char *desc, ServerFlag flag, const std::string &suid);

E Server *findserver(Server *s, const char *name);

E void do_server(const char *source, const char *servername, const char *hops, const char *descript, const std::string &numeric);
E void do_squit(const char *source, int ac, const char **av);
E int anope_check_sync(const char *name);

E void finish_sync(Server *serv, int sync_links);

E void ts6_uid_init();
E void ts6_uid_increment(unsigned int slot);
E const char *ts6_uid_retrieve();

E const char *ts6_sid_retrieve();

/**** sessions.c ****/

E Exception *exceptions;
E int16 nexceptions;

E Session *sessionlist[1024];
E int32 nsessions;

E void get_session_stats(long *nrec, long *memuse);
E void get_exception_stats(long *nrec, long *memuse);

E int add_session(const char *nick, const char *host, char *hostip);
E void del_session(const char *host);

E void expire_exceptions();

E Session *findsession(const char *host);

E Exception *find_host_exception(const char *host);
E Exception *find_hostip_exception(const char *host, const char *hostip);
E int exception_add(User * u, const char *mask, const int limit,
						 const char *reason, const char *who,
						 const time_t expires);

/**** slist.c ****/
E int slist_add(SList *slist, void *item);
E void slist_clear(SList *slist, int free);
E int slist_delete(SList *slist, int index);
E int slist_delete_range(SList *slist, const char *range, slist_delcheckcb_t cb, ...);
E int slist_enum(SList *slist, const char *range, slist_enumcb_t cb, ...);
E int slist_full(SList *slist);
E int slist_indexof(SList *slist, void *item);
E void slist_init(SList *slist);
E void slist_pack(SList *slist);
E int slist_remove(SList *slist, void *item);
E int slist_setcapacity(SList *slist, int16 capacity);

/**** sockets.cpp ****/
E SocketEngine socketEngine;
E int32 TotalRead;
E int32 TotalWritten;

/**** users.c ****/

E User *userlist[1024];

E int32 opcnt;
E uint32 maxusercnt, usercnt;
E time_t maxusertime;

E void get_user_stats(long *nusers, long *memuse);
E User *finduser(const std::string &nick);
E User *firstuser();
E User *nextuser();

E User *find_byuid(const std::string &uid);
E User *first_uid();
E User *next_uid();
E Server *findserver_uid(Server * s, const char *name);
E char *TS6SID;
E char *TS6UPLINK;

E User *do_nick(const char *source, const char *nick, const char *username, const char *host,
			  const char *server, const char *realname, time_t ts, uint32 ip, const char *vhost, const char *uid);

E void do_umode(const char *source, int ac, const char **av);
E void do_quit(const char *source, int ac, const char **av);
E void do_kill(const std::string &source, const std::string &reason);

E int is_oper(User * user);
E int is_protected(User * user);

E int is_excepted(ChannelInfo * ci, User * user);
E int is_excepted_mask(ChannelInfo * ci, const char *mask);

E int match_usermask(const char *mask, User * user);
E char *create_mask(User * u);

E void UserSetInternalModes(User *user, int ac, const char **av);

/******************************************************************************/

E const char *base64enc(long i);
E long base64dec(const char *b64);
E long base64dects(const char *ts);
E int b64_encode(const char *src, size_t srclength, char *target, size_t targsize);
E int b64_decode(const char *src, char *target, size_t targsize);
E const char *encode_ip(unsigned char *ip);
E int decode_ip(const char *buf);

E char *host_resolve(char *host);

#ifdef _WIN32
E char *GetWindowsVersion() ;
E int SupportedWindowsVersion();
#endif

#endif	/* EXTERN_H */