unrealircd

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h.h (78499B)

      1 /************************************************************************
      2  *   Unreal Internet Relay Chat Daemon, include/h.h
      3  *   Copyright (C) 1992 Darren Reed
      4  *
      5  *   This program is free software; you can redistribute it and/or modify
      6  *   it under the terms of the GNU General Public License as published by
      7  *   the Free Software Foundation; either version 1, or (at your option)
      8  *   any later version.
      9  *
     10  *   This program is distributed in the hope that it will be useful,
     11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13  *   GNU General Public License for more details.
     14  *
     15  *   You should have received a copy of the GNU General Public License
     16  *   along with this program; if not, write to the Free Software
     17  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     18  *
     19  *   $Id$
     20  */
     21 
     22 /*
     23  * "h.h". - Headers file.
     24  *
     25  * Most of the externs and prototypes thrown in here to 'cleanup' things.
     26  * -avalon
     27  */
     28 #include "setup.h"
     29 #include "fdlist.h"
     30 
     31 extern int dorehash, dorestart, doreloadcert;
     32 #ifndef _WIN32
     33 extern char **myargv;
     34 #else
     35 extern LPCSTR cmdLine;
     36 #endif
     37 /* Externals */
     38 extern MODVAR char *buildid;
     39 extern MODVAR char backupbuf[8192];
     40 extern EVENT(unrealdns_removeoldrecords);
     41 extern EVENT(unrealdb_expire_secret_cache);
     42 extern void init_glines(void);
     43 extern void tkl_init(void);
     44 extern void process_clients(void);
     45 extern void unrealdb_test(void);
     46 extern void ignore_this_signal();
     47 extern void s_rehash();
     48 extern void s_reloadcert();
     49 extern void s_restart();
     50 extern void s_die();
     51 #ifndef _WIN32
     52 // nix specific
     53 extern char unreallogo[];
     54 #else
     55 // windows specific
     56 extern SERVICE_STATUS_HANDLE IRCDStatusHandle;
     57 extern SERVICE_STATUS IRCDStatus;
     58 #endif
     59 extern MODVAR char *extraflags;
     60 extern MODVAR int tainted;
     61 extern MODVAR Member *freemember;
     62 extern MODVAR Membership *freemembership;
     63 extern MODVAR Client me;
     64 extern MODVAR Channel *channels;
     65 extern MODVAR ModData local_variable_moddata[MODDATA_MAX_LOCAL_VARIABLE];
     66 extern MODVAR ModData global_variable_moddata[MODDATA_MAX_GLOBAL_VARIABLE];
     67 extern MODVAR IRCStatistics ircstats;
     68 extern MODVAR int bootopt;
     69 extern MODVAR time_t timeofday;
     70 extern MODVAR struct timeval timeofday_tv;
     71 extern MODVAR char cmodestring[512];
     72 extern MODVAR char umodestring[UMODETABLESZ+1];
     73 /* newconf */
     74 #define get_sendq(x) ((x)->local->class ? (x)->local->class->sendq : DEFAULT_SENDQ)
     75 /* get_recvq is only called in send.c for local connections */
     76 #define get_recvq(x) ((x)->local->class->recvq ? (x)->local->class->recvq : DEFAULT_RECVQ)
     77 
     78 /* Configuration preprocessor */
     79 extern PreprocessorItem parse_preprocessor_item(char *start, char *end, const char *filename, int linenumber, ConditionalConfig **cc);
     80 extern void preprocessor_cc_duplicate_list(ConditionalConfig *r, ConditionalConfig **out);
     81 extern void preprocessor_cc_free_level(ConditionalConfig **cc_list, int level);
     82 extern void preprocessor_cc_free_list(ConditionalConfig *cc);
     83 extern void preprocessor_resolve_conditionals_ce(ConfigEntry **ce_list, PreprocessorPhase phase);
     84 extern void preprocessor_resolve_conditionals_all(PreprocessorPhase phase);
     85 extern void free_config_defines(void);
     86 extern void preprocessor_replace_defines(char **item, ConfigEntry *ce);
     87 
     88 /*
     89  * Configuration linked lists
     90 */
     91 extern MODVAR ConfigItem_me		*conf_me;
     92 extern MODVAR ConfigItem_files		*conf_files;
     93 extern MODVAR ConfigItem_class 	*conf_class;
     94 extern MODVAR ConfigItem_class		*default_class;
     95 extern MODVAR ConfigItem_admin 	*conf_admin;
     96 extern MODVAR ConfigItem_admin		*conf_admin_tail;
     97 extern MODVAR ConfigItem_drpass	*conf_drpass;
     98 extern MODVAR ConfigItem_ulines	*conf_ulines;
     99 extern MODVAR ConfigItem_tld		*conf_tld;
    100 extern MODVAR ConfigItem_oper		*conf_oper;
    101 extern MODVAR ConfigItem_listen	*conf_listen;
    102 extern MODVAR ConfigItem_allow		*conf_allow;
    103 extern MODVAR ConfigItem_vhost		*conf_vhost;
    104 extern MODVAR ConfigItem_link		*conf_link;
    105 extern MODVAR ConfigItem_sni		*conf_sni;
    106 extern MODVAR ConfigItem_ban		*conf_ban;
    107 extern MODVAR ConfigItem_deny_channel  *conf_deny_channel;
    108 extern MODVAR ConfigItem_allow_channel *conf_allow_channel;
    109 extern MODVAR ConfigItem_deny_version	*conf_deny_version;
    110 extern MODVAR ConfigItem_alias		*conf_alias;
    111 extern MODVAR ConfigItem_help		*conf_help;
    112 extern MODVAR ConfigItem_offchans	*conf_offchans;
    113 extern void		completed_connection(int, int, void *);
    114 extern void clear_unknown();
    115 extern EVENT(e_unload_module_delayed);
    116 extern EVENT(throttling_check_expire);
    117 
    118 extern void  module_loadall(void);
    119 extern long set_usermode(const char *umode);
    120 extern const char *get_usermode_string(Client *acptr);
    121 extern const char *get_usermode_string_r(Client *client, char *buf, size_t buflen);
    122 extern const char *get_usermode_string_raw(long umodes);
    123 extern const char *get_usermode_string_raw_r(long umodes, char *buf, size_t buflen);
    124 extern ConfigFile *config_parse(const char *filename, char *confdata);
    125 extern ConfigFile *config_parse_with_offset(const char *filename, char *confdata, unsigned int line_offset);
    126 extern void config_error(FORMAT_STRING(const char *format), ...) __attribute__((format(printf,1,2)));
    127 extern void config_warn(FORMAT_STRING(const char *format), ...) __attribute__((format(printf,1,2)));
    128 extern void config_error_missing(const char *filename, int line, const char *entry);
    129 extern void config_error_unknown(const char *filename, int line, const char *block, const char *entry);
    130 extern void config_error_unknownflag(const char *filename, int line, const char *block, const char *entry);
    131 extern void config_error_unknownopt(const char *filename, int line, const char *block, const char *entry);
    132 extern void config_error_noname(const char *filename, int line, const char *block);
    133 extern void config_error_blank(const char *filename, int line, const char *block);
    134 extern void config_error_empty(const char *filename, int line, const char *block, const char *entry);
    135 extern void config_warn_duplicate(const char *filename, int line, const char *entry);
    136 extern int config_is_blankorempty(ConfigEntry *cep, const char *block);
    137 extern MODVAR int config_verbose;
    138 extern void config_entry_free(ConfigEntry *ce);
    139 extern void config_entry_free_all(ConfigEntry *ce);
    140 extern ConfigFile *config_load(const char *filename, const char *displayname);
    141 extern void config_free(ConfigFile *cfptr);
    142 extern void ipport_seperate(const char *string, char **ip, char **port);
    143 extern ConfigItem_class	*find_class(const char *name);
    144 extern ConfigItem_oper		*find_oper(const char *name);
    145 extern ConfigItem_operclass	*find_operclass(const char *name);
    146 extern ConfigItem_listen *find_listen(const char *ipmask, int port, SocketType socket_type);
    147 extern ConfigItem_sni *find_sni(const char *name);
    148 extern ConfigItem_ulines	*find_uline(const char *host);
    149 extern ConfigItem_tld		*find_tld(Client *cptr);
    150 extern ConfigItem_link		*find_link(const char *servername);
    151 extern ConfigItem_ban 		*find_ban(Client *, const char *host, short type);
    152 extern ConfigItem_ban 		*find_banEx(Client *,const char *host, short type, short type2);
    153 extern ConfigItem_vhost	*find_vhost(const char *name);
    154 extern ConfigItem_deny_channel *find_channel_allowed(Client *cptr, const char *name);
    155 extern ConfigItem_alias	*find_alias(const char *name);
    156 extern ConfigItem_help 	*find_Help(const char *command);
    157 
    158 extern OperPermission ValidatePermissionsForPath(const char *path, Client *client, Client *victim, Channel *channel, const void *extra);
    159 extern void OperClassValidatorDel(OperClassValidator *validator);
    160 
    161 extern ConfigItem_ban  *find_ban_ip(Client *client);
    162 extern void add_ListItem(ListStruct *, ListStruct **);
    163 extern void append_ListItem(ListStruct *item, ListStruct **list);
    164 extern void add_ListItemPrio(ListStructPrio *, ListStructPrio **, int);
    165 extern void del_ListItem(ListStruct *, ListStruct **);
    166 extern MODVAR LoopStruct loop;
    167 extern int del_banid(Channel *channel, const char *banid);
    168 extern int del_exbanid(Channel *channel, const char *banid);
    169 #define REPORT_DO_DNS	"NOTICE * :*** Looking up your hostname...\r\n"
    170 #define REPORT_FIN_DNS	"NOTICE * :*** Found your hostname\r\n"
    171 #define REPORT_FIN_DNSC "NOTICE * :*** Found your hostname (cached)\r\n"
    172 #define REPORT_FAIL_DNS "NOTICE * :*** Couldn't resolve your hostname; using your IP address instead\r\n"
    173 #define REPORT_DO_ID	"NOTICE * :*** Checking ident...\r\n"
    174 #define REPORT_FIN_ID	"NOTICE * :*** Received identd response\r\n"
    175 #define REPORT_FAIL_ID	"NOTICE * :*** No ident response; username prefixed with ~\r\n"
    176 extern MODVAR int R_do_dns, R_fin_dns, R_fin_dnsc, R_fail_dns, R_do_id, R_fin_id, R_fail_id;
    177 extern MODVAR struct list_head client_list;
    178 extern MODVAR struct list_head lclient_list;
    179 extern MODVAR struct list_head server_list;
    180 extern MODVAR struct list_head oper_list;
    181 extern MODVAR struct list_head unknown_list;
    182 extern MODVAR struct list_head control_list;
    183 extern MODVAR struct list_head global_server_list;
    184 extern MODVAR struct list_head dead_list;
    185 extern MODVAR struct list_head rpc_remote_list;
    186 extern RealCommand *find_command(const char *cmd, int flags);
    187 extern RealCommand *find_command_simple(const char *cmd);
    188 extern Membership *find_membership_link(Membership *lp, Channel *ptr);
    189 extern Member *find_member_link(Member *, Client *);
    190 extern int remove_user_from_channel(Client *client, Channel *channel, int dont_log);
    191 extern void add_server_to_table(Client *);
    192 extern void remove_server_from_table(Client *);
    193 extern void iNAH_host(Client *client, const char *host);
    194 extern void set_snomask(Client *client, const char *snomask);
    195 extern int check_tkls(Client *cptr);
    196 /* for services */
    197 extern void send_user_joins(Client *, Client *);
    198 extern int valid_channelname(const char *);
    199 extern int valid_server_name(const char *name);
    200 extern Cmode *find_channel_mode_handler(char letter);
    201 extern int valid_channel_access_mode_letter(char letter);
    202 extern int check_channel_access(Client *client, Channel *channel, const char *modes);
    203 extern int check_channel_access_membership(Membership *mb, const char *modes);
    204 extern int check_channel_access_member(Member *mb, const char *modes);
    205 extern int check_channel_access_string(const char *current_modes, const char *modes);
    206 extern int check_channel_access_letter(const char *current_modes, const char letter);
    207 extern const char *get_channel_access(Client *client, Channel *channel);
    208 extern void add_member_mode_fast(Member *mb, Membership *mbs, char letter);
    209 extern void del_member_mode_fast(Member *mb, Membership *mbs, char letter);
    210 extern void add_member_mode(Client *client, Channel *channel, char letter);
    211 extern void del_member_mode(Client *client, Channel *channel, char letter);
    212 extern char sjoin_prefix_to_mode(char s);
    213 extern char mode_to_sjoin_prefix(char s);
    214 extern char mode_to_prefix(char s);
    215 extern char prefix_to_mode(char s);
    216 extern const char *modes_to_prefix(const char *modes);
    217 extern const char *modes_to_sjoin_prefix(const char *modes);
    218 extern char rank_to_mode(int rank);
    219 extern int mode_to_rank(char mode);
    220 extern char lowest_ranking_mode(const char *modes);
    221 extern char lowest_ranking_prefix(const char *prefix);
    222 extern void channel_member_modes_generate_equal_or_greater(const char *modes, char *buf, size_t buflen);
    223 extern int ban_check_mask(BanContext *b);
    224 extern int extban_is_ok_nuh_extban(BanContext *b);
    225 extern const char *extban_conv_param_nuh_or_extban(BanContext *b, Extban *extban);
    226 extern const char *extban_conv_param_nuh(BanContext *b, Extban *extban);
    227 extern Ban *is_banned(Client *, Channel *, int, const char **, const char **);
    228 extern Ban *is_banned_with_nick(Client *, Channel *, int, const char *, const char **, const char **);
    229 extern int ban_exists(Ban *lst, const char *str);
    230 extern int ban_exists_ignore_time(Ban *lst, const char *str);
    231 
    232 extern Client *find_client(const char *, Client *);
    233 extern Client *find_name(const char *, Client *);
    234 extern Client *find_nickserv(const char *, Client *);
    235 extern Client *find_user(const char *, Client *);
    236 extern Client *find_server(const char *, Client *);
    237 extern Client *find_server_by_uid(const char *uid);
    238 extern Client *find_service(const char *, Client *);
    239 #define find_server_quick(x) find_server(x, NULL)
    240 extern char *find_or_add(char *);
    241 extern void inittoken();
    242 extern void reset_help();
    243 
    244 extern MODVAR char *debugmode, *configfile, *sbrk0;
    245 extern void set_sockhost(Client *, const char *);
    246 #ifdef _WIN32
    247 extern const char *sock_strerror(int);
    248 #endif
    249 
    250 #ifdef _WIN32
    251 extern MODVAR int debuglevel;
    252 #else
    253 extern int debuglevel, errno, h_errno;
    254 #endif
    255 extern MODVAR int OpenFiles;  /* number of files currently open */
    256 extern MODVAR int debuglevel, portnum, debugtty, maxusersperchannel;
    257 extern MODVAR int readcalls, udpfd, resfd;
    258 extern Client *add_connection(ConfigItem_listen *, int);
    259 extern int check_server_init(Client *);
    260 extern void close_connection(Client *);
    261 extern void close_unbound_listeners();
    262 extern int get_sockerr(Client *);
    263 extern int inetport(ConfigItem_listen *, char *, int, int);
    264 extern void init_sys();
    265 extern void check_user_limit(void);
    266 extern void init_modef();
    267 extern int verify_hostname(const char *name);
    268 
    269 extern int setup_ping();
    270 
    271 extern void set_channel_mlock(Client *, Channel *, const char *, int);
    272 
    273 extern void restart(const char *);
    274 extern void server_reboot(const char *);
    275 extern void terminate(), write_pidfile();
    276 extern void *safe_alloc(size_t size);
    277 extern void set_socket_buffers(int fd, int rcvbuf, int sndbuf);
    278 extern int send_queued(Client *);
    279 extern void send_queued_cb(int fd, int revents, void *data);
    280 extern void sendto_serv_butone_nickcmd(Client *one, MessageTag *mtags, Client *client, const char *umodes);
    281 extern void    sendto_message_one(Client *to, Client *from, const char *sender, const char *cmd, const char *nick, const char *msg);
    282 extern void sendto_channel(Channel *channel, Client *from, Client *skip,
    283                            char *member_modes, long clicap, int sendflags,
    284                            MessageTag *mtags,
    285                            FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,8,9)));
    286 extern void sendto_local_common_channels(Client *user, Client *skip,
    287                                          long clicap, MessageTag *mtags,
    288                                          FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,5,6)));
    289 extern void quit_sendto_local_common_channels(Client *user, MessageTag *mtags, const char *reason);
    290 extern void sendto_match_servs(Channel *, Client *, FORMAT_STRING(const char *), ...) __attribute__((format(printf,3,4)));
    291 extern void sendto_match_butone(Client *, Client *, const char *, int, MessageTag *,
    292     FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,6,7)));
    293 extern void sendto_all_butone(Client *, Client *, FORMAT_STRING(const char *), ...) __attribute__((format(printf,3,4)));
    294 extern void sendto_ops(FORMAT_STRING(const char *), ...) __attribute__((format(printf,1,2)));
    295 extern void sendto_prefix_one(Client *, Client *, MessageTag *, FORMAT_STRING(const char *), ...) __attribute__((format(printf,4,5)));
    296 extern void vsendto_prefix_one(Client *to, Client *from, MessageTag *mtags, const char *pattern, va_list vl);
    297 extern void sendto_opers(FORMAT_STRING(const char *), ...) __attribute__((format(printf,1,2)));
    298 extern void sendto_umode(int, FORMAT_STRING(const char *), ...) __attribute__((format(printf,2,3)));
    299 extern void sendto_umode_global(int, FORMAT_STRING(const char *), ...) __attribute__((format(printf,2,3)));
    300 extern void sendnotice(Client *to, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,2,3)));
    301 /** Send numeric message to a client.
    302  * @param to		The recipient
    303  * @param numeric	The numeric, one of RPL_* or ERR_*, see include/numeric.h
    304  * @param ...		The parameters for the numeric
    305  * @note Be sure to provide the correct number and type of parameters that belong to the numeric. Check include/numeric.h when in doubt!
    306  * @section sendnumeric_examples Examples
    307  * @subsection sendnumeric_permission_denied Send "Permission Denied" numeric
    308  * This numeric has no parameter, so is simple:
    309  * @code
    310  * sendnumeric(client, ERR_NOPRIVILEGES);
    311  * @endcode
    312  * @subsection sendnumeric_notenoughparameters Send "Not enough parameters" numeric
    313  * This numeric requires 1 parameter: the name of the command.
    314  * @code
    315  * sendnumeric(client, ERR_NEEDMOREPARAMS, "SOMECOMMAND");
    316  * @endcode
    317  * @ingroup SendFunctions
    318  */
    319 #define sendnumeric(to, numeric, ...) sendtaggednumericfmt(to, NULL, numeric, STR_ ## numeric, ##__VA_ARGS__)
    320 
    321 /** Send numeric message to a client - format to user specific needs.
    322  * This will ignore the numeric definition of src/numeric.c and always send ":me.name numeric clientname "
    323  * followed by the pattern and format string you choose.
    324  * @param to		The recipient
    325  * @param numeric	The numeric, one of RPL_* or ERR_*, see src/numeric.c
    326  * @param pattern	The format string / pattern to use.
    327  * @param ...		Format string parameters.
    328  * @note Don't forget to add a colon if you need it (eg `:%%s`), this is a common mistake.
    329  */
    330 #define sendnumericfmt(to, numeric, ...) sendtaggednumericfmt(to, NULL, numeric, __VA_ARGS__)
    331 
    332 /** Send numeric message to a client - format to user specific needs.
    333  * This will ignore the numeric definition of src/numeric.c and always send ":me.name numeric clientname "
    334  * followed by the pattern and format string you choose.
    335  * @param to		The recipient
    336  * @param mtags     NULL, or NULL-terminated array of message tags
    337  * @param numeric	The numeric, one of RPL_* or ERR_*, see src/numeric.c
    338  * @param pattern	The format string / pattern to use.
    339  * @param ...		Format string parameters.
    340  * @note Don't forget to add a colon if you need it (eg `:%%s`), this is a common mistake.
    341  */
    342 #define sendtaggednumeric(to, mtags, numeric, ...) sendtaggednumericfmt(to, mtags, numeric, STR_ ## numeric, ##__VA_ARGS__)
    343 
    344 extern void sendtaggednumericfmt(Client *to, MessageTag *mtags, int numeric, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,4,5)));
    345 
    346 extern void sendtxtnumeric(Client *to, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,2,3)));
    347 /** Build numeric message so it is ready to be sent to a client - rarely used, normally you use sendnumeric() instead.
    348  * This function is normally only used in eg CAN_KICK and CAN_SET_TOPIC, where
    349  * you need to set an 'errbuf' with a full IRC protocol line to reject the request
    350  * (which then may or may not be sent depending on operoverride privileges).
    351  * @param buf		The buffer where the message should be stored to (full IRC protocol line)
    352  * @param buflen	The size of the buffer
    353  * @param to		The recipient
    354  * @param numeric	The numeric, one of RPL_* or ERR_*, see include/numeric.h
    355  * @param ...		The parameters for the numeric
    356  * @note Be sure to provide the correct number and type of parameters that belong to the numeric. Check include/numeric.h when in doubt!
    357  * @ingroup SendFunctions
    358  */
    359 #define buildnumeric(buf, buflen, to, numeric, ...) buildnumericfmt(buf, buflen, to, numeric, STR_ ## numeric, ##__VA_ARGS__)
    360 extern void buildnumericfmt(char *buf, size_t buflen, Client *to, int numeric, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,5,6)));
    361 extern void sendto_server(Client *one, unsigned long caps, unsigned long nocaps, MessageTag *mtags, FORMAT_STRING(const char *format), ...) __attribute__((format(printf, 5, 6)));
    362 extern void send_raw_direct(Client *user, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf, 2, 3)));
    363 extern MODVAR int writecalls, writeb[];
    364 extern int deliver_it(Client *cptr, char *str, int len, int *want_read);
    365 extern int target_limit_exceeded(Client *client, void *target, const char *name);
    366 extern char *canonize(const char *buffer);
    367 extern int check_registered(Client *);
    368 extern int check_registered_user(Client *);
    369 extern const char *get_client_name(Client *, int);
    370 extern const char *get_client_host(Client *);
    371 extern const char *myctime(time_t);
    372 extern const char *short_date(time_t, char *buf);
    373 extern const char *long_date(time_t);
    374 extern const char *pretty_time_val(long);
    375 extern const char *pretty_time_val_r(char *buf, size_t buflen, long timeval);
    376 extern const char *pretty_date(time_t t);
    377 extern time_t server_time_to_unix_time(const char *tbuf);
    378 extern time_t rfc2616_time_to_unix_time(const char *tbuf);
    379 extern const char *rfc2616_time(time_t clock);
    380 extern void exit_client(Client *client, MessageTag *recv_mtags, const char *comment);
    381 extern void exit_client_fmt(Client *client, MessageTag *recv_mtags, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf, 3, 4)));
    382 extern void exit_client_ex(Client *client, Client *origin, MessageTag *recv_mtags, const char *comment);
    383 extern void initstats();
    384 extern const char *check_string(const char *);
    385 extern char *make_nick_user_host(const char *, const char *, const char *);
    386 extern char *make_nick_user_host_r(char *namebuf, size_t namebuflen, const char *nick, const char *name, const char *host);
    387 extern char *make_user_host(const char *, const char *);
    388 extern void parse(Client *cptr, char *buffer, int length);
    389 extern int hunt_server(Client *, MessageTag *, const char *, int, int, const char **);
    390 extern int cmd_server_estab(Client *);
    391 extern void umode_init(void);
    392 #define UMODE_GLOBAL 1
    393 #define UMODE_LOCAL 0
    394 extern int umode_allow_all(Client *client, int what);
    395 extern int umode_allow_unset(Client *client, int what);
    396 extern int umode_allow_opers(Client *client, int what);
    397 extern int umode_allow_none(Client *client, int what);
    398 extern int umode_delete(char ch, long val);
    399 extern void build_umode_string(Client *client, long old, long sendmask, char *umode_buf);
    400 extern void send_umode_out(Client *client, int show_to_user, long old);
    401 
    402 extern void free_client(Client *);
    403 extern void free_link(Link *);
    404 extern void free_ban(Ban *);
    405 extern void free_user(Client *);
    406 extern int link_list_length(Link *lp);
    407 extern int find_str_match_link(Link *, const char *);
    408 extern void free_str_list(Link *);
    409 extern Link *make_link();
    410 extern Ban *make_ban();
    411 extern User *make_user(Client *);
    412 extern Server *make_server();
    413 extern Client *make_client(Client *, Client *);
    414 extern Channel *make_channel(const char *name);
    415 extern Member *find_channel_link(Member *, Channel *);
    416 extern char *pretty_mask(const char *);
    417 extern void add_client_to_list(Client *);
    418 extern void remove_client_from_list(Client *);
    419 extern void initlists(void);
    420 extern void initlist_channels(void);
    421 extern struct hostent *get_res(const char *);
    422 extern struct hostent *gethost_byaddr(const char *, Link *);
    423 extern struct hostent *gethost_byname(const char *, Link *);
    424 extern void flush_cache();
    425 extern void init_resolver(int firsttime);
    426 extern time_t timeout_query_list(time_t);
    427 extern time_t expire_cache(time_t);
    428 extern void del_queries(const char *);
    429 
    430 /* Hash stuff */
    431 #define NICK_HASH_TABLE_SIZE 32768
    432 #define CHAN_HASH_TABLE_SIZE 32768
    433 #define WHOWAS_HASH_TABLE_SIZE 32768
    434 #define THROTTLING_HASH_TABLE_SIZE 8192
    435 extern uint64_t siphash(const char *in, const char *k);
    436 extern uint64_t siphash_raw(const char *in, size_t len, const char *k);
    437 extern uint64_t siphash_nocase(const char *in, const char *k);
    438 extern void siphash_generate_key(char *k);
    439 extern void init_hash(void);
    440 extern void add_whowas_to_clist(WhoWas **, WhoWas *);
    441 extern void del_whowas_from_clist(WhoWas **, WhoWas *);
    442 extern void add_whowas_to_list(WhoWas **, WhoWas *);
    443 extern void del_whowas_from_list(WhoWas **, WhoWas *);
    444 extern uint64_t hash_whowas_name(const char *name);
    445 extern void create_whowas_entry(Client *client, WhoWas *e, WhoWasEvent event);
    446 extern void free_whowas_fields(WhoWas *e);
    447 extern int add_to_client_hash_table(const char *, Client *);
    448 extern int del_from_client_hash_table(const char *, Client *);
    449 extern int add_to_id_hash_table(const char *, Client *);
    450 extern int del_from_id_hash_table(const char *, Client *);
    451 extern int add_to_channel_hash_table(const char *, Channel *);
    452 extern void del_from_channel_hash_table(const char *, Channel *);
    453 extern Channel *hash_get_chan_bucket(uint64_t);
    454 extern Client *hash_find_client(const char *, Client *);
    455 extern Client *hash_find_id(const char *, Client *);
    456 extern Client *hash_find_nickatserver(const char *, Client *);
    457 extern Channel *find_channel(const char *name);
    458 extern Client *hash_find_server(const char *, Client *);
    459 extern struct MODVAR ThrottlingBucket *ThrottlingHash[THROTTLING_HASH_TABLE_SIZE];
    460 
    461 
    462 
    463 /* Mode externs
    464 */
    465 extern MODVAR long UMODE_INVISIBLE; /*  makes user invisible */
    466 extern MODVAR long UMODE_OPER;      /*  Operator */
    467 extern MODVAR long UMODE_REGNICK;   /*  Nick set by services as registered */
    468 extern MODVAR long UMODE_SERVNOTICE;/* server notices such as kill */
    469 extern MODVAR long UMODE_HIDE;	     /* Hide from Nukes */
    470 extern MODVAR long UMODE_SECURE;    /*	User is a secure connect */
    471 extern MODVAR long UMODE_DEAF;      /* Deaf */
    472 extern MODVAR long UMODE_HIDEOPER;  /* Hide oper mode */
    473 extern MODVAR long UMODE_SETHOST;   /* used sethost */
    474 extern MODVAR long UMODE_HIDLE;     /* hides oper idle times */
    475 extern MODVAR long AllUmodes, SendUmodes;
    476 
    477 extern MODVAR long SNO_KILLS;
    478 extern MODVAR long SNO_CLIENT;
    479 extern MODVAR long SNO_FLOOD;
    480 extern MODVAR long SNO_FCLIENT;
    481 extern MODVAR long SNO_JUNK;
    482 extern MODVAR long SNO_VHOST;
    483 extern MODVAR long SNO_EYES;
    484 extern MODVAR long SNO_TKL;
    485 extern MODVAR long SNO_NICKCHANGE;
    486 extern MODVAR long SNO_FNICKCHANGE;
    487 extern MODVAR long SNO_QLINE;
    488 extern MODVAR long SNO_SNOTICE;
    489 extern MODVAR long SNO_SPAMF;
    490 extern MODVAR long SNO_OPER;
    491 
    492 #ifndef HAVE_STRNLEN
    493 extern size_t strnlen(const char *s, size_t maxlen);
    494 #endif
    495 #ifndef HAVE_STRLCPY
    496 extern size_t strlcpy(char *dst, const char *src, size_t size);
    497 #endif
    498 #ifndef HAVE_STRLNCPY
    499 extern size_t strlncpy(char *dst, const char *src, size_t size, size_t n);
    500 #endif
    501 #ifndef HAVE_STRLCAT
    502 extern size_t strlcat(char *dst, const char *src, size_t size);
    503 #endif
    504 #ifndef HAVE_STRLNCAT
    505 extern size_t strlncat(char *dst, const char *src, size_t size, size_t n);
    506 #endif
    507 extern void strlcat_letter(char *buf, char c, size_t buflen);
    508 extern char *strldup(const char *src, size_t n);
    509 
    510 extern void dopacket(Client *, char *, int);
    511 
    512 extern void debug(int, FORMAT_STRING(const char *), ...) __attribute__((format(printf,2,3)));
    513 #if defined(DEBUGMODE)
    514 extern void send_usage(Client *, const char *);
    515 extern void count_memory(Client *, const char *);
    516 extern int checkprotoflags(Client *, int, const char *, int);
    517 #endif
    518 
    519 extern const char *inetntop(int af, const void *in, char *local_dummy, size_t the_size);
    520 
    521 extern void delletterfromstring(char *s, char letter);
    522 extern void addlettertodynamicstringsorted(char **str, char letter);
    523 extern int sort_character_lowercase_before_uppercase(char x, char y);
    524 
    525 /* Internal command stuff - not for modules */
    526 extern MODVAR RealCommand *CommandHash[256];
    527 extern void init_CommandHash(void);
    528 
    529 /* CRULE */
    530 extern struct CRuleNode* crule_parse(const char*);
    531 extern void crule_free(struct CRuleNode**);
    532 extern int crule_eval(struct CRuleNode* rule);
    533 extern int crule_test(const char *rule);
    534 extern const char *crule_errstring(int errcode);
    535 
    536 /*
    537  * Close all local socket connections, invalidate client fd's
    538  * WIN32 cleanup winsock lib
    539  */
    540 extern void close_connections(void);
    541 
    542 extern int b64_encode(unsigned char const *src, size_t srclength, char *target, size_t targsize);
    543 extern int b64_decode(char const *src, unsigned char *target, size_t targsize);
    544 
    545 extern AuthenticationType Auth_FindType(const char *hash, const char *type);
    546 extern AuthConfig	*AuthBlockToAuthConfig(ConfigEntry *ce);
    547 extern void		Auth_FreeAuthConfig(AuthConfig *as);
    548 extern int		Auth_Check(Client *cptr, AuthConfig *as, const char *para);
    549 extern const char	*Auth_Hash(int type, const char *para);
    550 extern int   		Auth_CheckError(ConfigEntry *ce);
    551 extern int              Auth_AutoDetectHashType(const char *hash);
    552 
    553 extern void make_cloakedhost(Client *client, const char *curr, char *buf, size_t buflen);
    554 extern int  channel_canjoin(Client *client, const char *name);
    555 extern char *collapse(char *pattern);
    556 extern void dcc_sync(Client *client);
    557 extern void request_rehash(Client *client);
    558 extern int rehash_internal(Client *client);
    559 extern void s_die();
    560 extern int match_simple(const char *mask, const char *name);
    561 extern int match_esc(const char *mask, const char *name);
    562 extern int add_listener(ConfigItem_listen *conf);
    563 extern void link_cleanup(ConfigItem_link *link_ptr);
    564 extern void       listen_cleanup();
    565 extern int  numeric_collides(long numeric);
    566 extern void      flag_add(char ch);
    567 extern void      flag_del(char ch);
    568 extern void init_dynconf(void);
    569 extern int config_read_start(void);
    570 extern int is_config_read_finished(void);
    571 extern int config_test(void);
    572 extern void config_run(void);
    573 extern void rehash_motdrules();
    574 extern void read_motd(const char *filename, MOTDFile *motd); /* s_serv.c */
    575 extern void send_proto(Client *, ConfigItem_link *);
    576 extern void unload_all_modules(void);
    577 extern void set_sock_opts(int fd, Client *cptr, SocketType socket_type);
    578 extern void stripcrlf(char *line);
    579 extern int strnatcmp(char const *a, char const *b);
    580 extern int strnatcasecmp(char const *a, char const *b);
    581 extern void outofmemory(size_t bytes);
    582 
    583 /** Memory allocation and deallocation functions and macros that should be used in UnrealIRCd.
    584  * Use these instead of malloc/calloc/free.
    585  * @defgroup MemoryRoutines Memory allocation and deallocation
    586  * @{
    587  */
    588 extern void *safe_alloc(size_t size);
    589 /** Free previously allocate memory pointer.
    590  * This also sets the pointer to NULL, since that would otherwise be common to forget.
    591  */
    592 #define safe_free(x) do { if (x) free(x); x = NULL; } while(0)
    593 /** Free previously allocated memory pointer.
    594  * Raw version which does not touch the pointer itself. You most likely don't
    595  * need this, as it's only used in 1 place in UnrealIRCd.
    596  */
    597 #define safe_free_raw(x) free(x)
    598 
    599 /** Free previous memory (if any) and then save a duplicate of the specified string.
    600  * @param dst   The current pointer and the pointer where a new copy of the string will be stored.
    601  * @param str   The string you want to copy
    602  */
    603 #define safe_strdup(dst,str) do { if (dst) free(dst); if ((str) == NULL) dst = NULL; else dst = our_strdup(str); } while(0)
    604 
    605 /** Return a copy of the string. Do not free any existing memory.
    606  * @param str   The string to duplicate
    607  * @returns A pointer to the new copy.
    608  * @note
    609  * Generally you need to use safe_strdup() instead(!). But when clearly initializing
    610  * a variable that does not have a previous value, then raw_strdup() usage is fine, eg:
    611  * int somefunc()
    612  * {
    613  *     char *somevar = raw_strdup("IRC");
    614  * And, similarly if you want to return a duplicate (there is no destination variable):
    615  * return raw_strdup(something);
    616  */
    617 #define raw_strdup(str) strdup(str)
    618 
    619 /** Free previous memory (if any) and then save a duplicate of the specified string with a length limit.
    620  * @param dst   The current pointer and the pointer where a new copy of the string will be stored.
    621  * @param str   The string you want to copy
    622  * @param sz    Length limit including the NUL byte, usually sizeof(dst)
    623  */
    624 #define safe_strldup(dst,str,sz) do { if (dst) free(dst); if (!str) dst = NULL; else dst = our_strldup(str,sz); } while(0)
    625 
    626 /** Return a duplicate of the specified string with a length limit. Do not free any existing memory.
    627  * @param str   The string you want to copy
    628  * @param sz    Length limit including the NUL byte, usually sizeof(dst)
    629  * @returns A pointer to the new copy.
    630  * @note
    631  * Generally you need to use safe_strldup() instead(!). But when clearly initializing
    632  * a variable that does not have a previous value, then raw_strldup() usage is fine, eg:
    633  * int somefunc(char *str)
    634  * {
    635  *     char *somevar = raw_strldup(str, 16);
    636  * And, similarly if you want to return a duplicate (there is no destination variable):
    637  * return raw_strldup(something);
    638  */
    639 #define raw_strldup(str, max) our_strldup(str, max)
    640 
    641 extern void *safe_alloc_sensitive(size_t size);
    642 
    643 /** Free previously allocate memory pointer - this is the sensitive version which
    644  * may ONLY be called on allocations returned by safe_alloc_sensitive() / safe_strdup_sensitive().
    645  * This will set the memory to all zeroes before actually deallocating.
    646  * It also sets the pointer to NULL, since that would otherwise be common to forget.
    647  * @note If you call this function on normally allocated memory (non-sensitive) then we will crash.
    648  */
    649 #define safe_free_sensitive(x) do { if (x) sodium_free(x); x = NULL; } while(0)
    650 
    651 /** Free previous memory (if any) and then save a duplicate of the specified string -
    652  * This is the 'sensitive' version which should only be used for HIGHLY sensitive data,
    653  * as it wastes about 8000 bytes even if you only duplicate a string of 32 bytes (this is by design).
    654  * @param dst   The current pointer and the pointer where a new copy of the string will be stored.
    655  * @param str   The string you want to copy
    656  */
    657 #define safe_strdup_sensitive(dst,str) do { if (dst) sodium_free(dst); if (!(str)) dst = NULL; else dst = our_strdup_sensitive(str); } while(0)
    658 
    659 /** Safely destroy a string in memory (but do not free!) */
    660 #define destroy_string(str) sodium_memzero(str, strlen(str))
    661 
    662 /** @} */
    663 extern char *our_strdup(const char *str);
    664 extern char *our_strldup(const char *str, size_t max);
    665 extern char *our_strdup_sensitive(const char *str);
    666 
    667 extern long config_checkval(const char *value, unsigned short flags);
    668 extern void config_status(FORMAT_STRING(const char *format), ...) __attribute__((format(printf,1,2)));
    669 extern void init_random();
    670 extern u_char getrandom8();
    671 extern uint16_t getrandom16();
    672 extern uint32_t getrandom32();
    673 extern void gen_random_alnum(char *buf, int numbytes);
    674 
    675 /* Check config entry for empty/missing parameter */
    676 #define CheckNull(x) if ((!(x)->value) || (!(*((x)->value)))) { config_error("%s:%i: missing parameter", (x)->file->filename, (x)->line_number); errors++; continue; }
    677 /* as above, but accepting empty string */
    678 #define CheckNullAllowEmpty(x) if ((!(x)->value)) { config_error("%s:%i: missing parameter", (x)->file->filename, (x)->line_number); errors++; continue; }
    679 
    680 extern MODVAR char extchmstr[4][64];
    681 
    682 extern int extcmode_default_requirechop(Client *, Channel *, char, const char *, int, int);
    683 extern int extcmode_default_requirehalfop(Client *, Channel *, char, const char *, int, int);
    684 extern Cmode_t extcmode_get(Cmode *);
    685 extern void extcmode_init(void);
    686 extern void make_extcmodestr();
    687 extern void extcmode_duplicate_paramlist(void **xi, void **xo);
    688 extern void extcmode_free_paramlist(void **ar);
    689 
    690 extern void chmode_str(struct ChMode *, char *, char *, size_t, size_t);
    691 extern const char *get_client_status(Client *);
    692 extern void SocketLoop(void *);
    693 #ifdef _WIN32
    694 extern void InitDebug(void);
    695 extern int InitUnrealIRCd(int argc, char **);
    696 extern void win_error();
    697 extern void win_log(FORMAT_STRING(const char *format), ...);
    698 extern int GetOSName(char *pszOS);
    699 extern void CleanUp(void);
    700 extern int CountRTFSize(unsigned char *buffer);
    701 extern void IRCToRTF(unsigned char *buffer, unsigned char *string);
    702 #endif
    703 extern void verify_opercount(Client *, const char *);
    704 extern int valid_host(const char *host, int strict);
    705 extern int valid_username(const char *username);
    706 extern int valid_vhost(const char *userhost);
    707 extern int count_oper_sessions(const char *);
    708 extern char *unreal_mktemp(const char *dir, const char *suffix);
    709 extern char *unreal_getpathname(const char *filepath, char *path);
    710 extern const char *unreal_getfilename(const char *path);
    711 extern const char *unreal_getmodfilename(const char *path);
    712 extern int unreal_create_directory_structure_for_file(const char *fname, mode_t mode);
    713 extern int unreal_create_directory_structure(const char *dname, mode_t mode);
    714 extern int unreal_mkdir(const char *pathname, mode_t mode);
    715 extern int unreal_copyfile(const char *src, const char *dest);
    716 extern int unreal_copyfileex(const char *src, const char *dest, int tryhardlink);
    717 extern time_t unreal_getfilemodtime(const char *filename);
    718 extern void unreal_setfilemodtime(const char *filename, time_t mtime);
    719 extern void DeleteTempModules(void);
    720 extern MODVAR Extban *extbaninfo;
    721 extern Extban *findmod_by_bantype(const char *str, const char **remainder);
    722 extern Extban *findmod_by_bantype_raw(const char *str, int ban_name_length);
    723 extern Extban *ExtbanAdd(Module *reserved, ExtbanInfo req);
    724 extern void ExtbanDel(Extban *);
    725 extern void extban_init(void);
    726 extern char *trim_str(char *str, int len);
    727 extern MODVAR char *ban_realhost, *ban_virthost, *ban_ip;
    728 extern BanAction banact_stringtoval(const char *s);
    729 extern const char *banact_valtostring(BanAction val);
    730 extern BanAction banact_chartoval(char c);
    731 extern char banact_valtochar(BanAction val);
    732 extern int spamfilter_gettargets(const char *s, Client *client);
    733 extern char *spamfilter_target_inttostring(int v);
    734 extern char *our_strcasestr(const char *haystack, const char *needle);
    735 extern int spamfilter_getconftargets(const char *s);
    736 extern void remove_all_snomasks(Client *client);
    737 extern void remove_oper_modes(Client *client);
    738 extern char *spamfilter_inttostring_long(int v);
    739 extern int is_invited(Client *client, Channel *channel);
    740 extern void channel_modes(Client *client, char *mbuf, char *pbuf, size_t mbuf_size, size_t pbuf_size, Channel *channel, int hide_local_modes);
    741 extern int op_can_override(const char *acl, Client *client,Channel *channel,void* extra);
    742 extern Client *find_chasing(Client *client, const char *user, int *chasing);
    743 extern MODVAR long opermode;
    744 extern MODVAR long sajoinmode;
    745 extern void add_user_to_channel(Channel *channel, Client *who, const char *modes);
    746 extern int add_banid(Client *, Channel *, const char *);
    747 extern int add_exbanid(Client *cptr, Channel *channel, const char *banid);
    748 extern int sub1_from_channel(Channel *);
    749 extern MODVAR CoreChannelModeTable corechannelmodetable[];
    750 extern char *unreal_encodespace(const char *s);
    751 extern char *unreal_decodespace(const char *s);
    752 extern MODVAR Link *helpign;
    753 extern void reread_motdsandrules();
    754 extern MODVAR int SVSNOOP;
    755 extern int callbacks_check(void);
    756 extern void callbacks_switchover(void);
    757 extern int efunctions_check(void);
    758 extern void efunctions_switchover(void);
    759 extern const char *encode_ip(const char *);
    760 extern const char *decode_ip(const char *);
    761 extern void sendto_one_nickcmd(Client *server, MessageTag *mtags, Client *client, const char *umodes);
    762 extern int on_dccallow_list(Client *to, Client *from);
    763 extern int add_dccallow(Client *client, Client *optr);
    764 extern int del_dccallow(Client *client, Client *optr);
    765 extern void delete_linkblock(ConfigItem_link *link_ptr);
    766 extern void delete_classblock(ConfigItem_class *class_ptr);
    767 extern void del_async_connects(void);
    768 extern void isupport_init(void);
    769 extern void clicap_init(void);
    770 extern void efunctions_init(void);
    771 extern void do_cmd(Client *client, MessageTag *mtags, const char *cmd, int parc, const char *parv[]);
    772 extern MODVAR char *me_hash;
    773 extern MODVAR int dontspread;
    774 extern MODVAR int labeled_response_inhibit;
    775 extern MODVAR int labeled_response_inhibit_end;
    776 extern MODVAR int labeled_response_force;
    777 
    778 /* Efuncs */
    779 extern MODVAR void (*do_join)(Client *, int, const char **);
    780 extern MODVAR void (*join_channel)(Channel *channel, Client *client, MessageTag *mtags, const char *flags);
    781 extern MODVAR int (*can_join)(Client *client, Channel *channel, const char *key, char **errmsg);
    782 extern MODVAR void (*do_mode)(Channel *channel, Client *client, MessageTag *mtags, int parc, const char *parv[], time_t sendts, int samode);
    783 extern MODVAR MultiLineMode *(*set_mode)(Channel *channel, Client *cptr, int parc, const char *parv[], u_int *pcount,
    784                             char pvar[MAXMODEPARAMS][MODEBUFLEN + 3]);
    785 extern MODVAR void (*set_channel_mode)(Channel *channel, MessageTag *mtags, const char *modes, const char *parameters);
    786 extern MODVAR void (*set_channel_topic)(Client *client, Channel *channel, MessageTag *recv_mtags, const char *topic, const char *set_by, time_t set_at);
    787 extern MODVAR void (*cmd_umode)(Client *, MessageTag *, int, const char **);
    788 extern MODVAR int (*register_user)(Client *client);
    789 extern MODVAR int (*tkl_hash)(unsigned int c);
    790 extern MODVAR char (*tkl_typetochar)(int type);
    791 extern MODVAR int (*tkl_chartotype)(char c);
    792 extern MODVAR char (*tkl_configtypetochar)(const char *name);
    793 extern MODVAR const char *(*tkl_type_string)(TKL *tk);
    794 extern MODVAR const char *(*tkl_type_config_string)(TKL *tk);
    795 extern MODVAR TKL *(*tkl_add_serverban)(int type, const char *usermask, const char *hostmask, const char *reason, const char *setby,
    796                                             time_t expire_at, time_t set_at, int soft, int flags);
    797 extern MODVAR TKL *(*tkl_add_banexception)(int type, const char *usermask, const char *hostmask, SecurityGroup *match,
    798                                            const char *reason, const char *set_by,
    799                                            time_t expire_at, time_t set_at, int soft, const char *bantypes, int flags);
    800 extern MODVAR TKL *(*tkl_add_nameban)(int type, const char *name, int hold, const char *reason, const char *setby,
    801                                           time_t expire_at, time_t set_at, int flags);
    802 extern MODVAR TKL *(*tkl_add_spamfilter)(int type, unsigned short target, unsigned short action, Match *match, const char *setby,
    803                                              time_t expire_at, time_t set_at,
    804                                              time_t spamf_tkl_duration, const char *spamf_tkl_reason,
    805                                              int flags);
    806 extern MODVAR TKL *(*find_tkl_serverban)(int type, const char *usermask, const char *hostmask, int softban);
    807 extern MODVAR TKL *(*find_tkl_banexception)(int type, const char *usermask, const char *hostmask, int softban);
    808 extern MODVAR TKL *(*find_tkl_nameban)(int type, const char *name, int hold);
    809 extern MODVAR TKL *(*find_tkl_spamfilter)(int type, const char *match_string, unsigned short action, unsigned short target);
    810 extern MODVAR void (*sendnotice_tkl_del)(const char *removed_by, TKL *tkl);
    811 extern MODVAR void (*sendnotice_tkl_add)(TKL *tkl);
    812 extern MODVAR void (*free_tkl)(TKL *tkl);
    813 extern MODVAR TKL *(*tkl_del_line)(TKL *tkl);
    814 extern MODVAR void (*tkl_check_local_remove_shun)(TKL *tmp);
    815 extern MODVAR int (*find_tkline_match)(Client *cptr, int skip_soft);
    816 extern MODVAR int (*find_shun)(Client *cptr);
    817 extern MODVAR int (*find_spamfilter_user)(Client *client, int flags);
    818 extern MODVAR TKL *(*find_qline)(Client *cptr, const char *nick, int *ishold);
    819 extern MODVAR TKL *(*find_tkline_match_zap)(Client *cptr);
    820 extern MODVAR void (*tkl_stats)(Client *cptr, int type, const char *para, int *cnt);
    821 extern MODVAR void (*tkl_sync)(Client *client);
    822 extern MODVAR void (*cmd_tkl)(Client *client, MessageTag *recv_mtags, int parc, const char *parv[]);
    823 extern MODVAR int (*place_host_ban)(Client *client, BanAction action, const char *reason, long duration);
    824 extern MODVAR int (*match_spamfilter)(Client *client, const char *str_in, int type, const char *cmd, const char *target, int flags, TKL **rettk);
    825 extern MODVAR int (*match_spamfilter_mtags)(Client *client, MessageTag *mtags, const char *cmd);
    826 extern MODVAR int (*join_viruschan)(Client *client, TKL *tk, int type);
    827 extern MODVAR const char *(*StripColors)(const char *text);
    828 extern MODVAR void (*spamfilter_build_user_string)(char *buf, const char *nick, Client *acptr);
    829 extern MODVAR void (*send_protoctl_servers)(Client *client, int response);
    830 extern MODVAR ConfigItem_link *(*verify_link)(Client *client);
    831 extern MODVAR void (*send_server_message)(Client *client);
    832 extern MODVAR void (*broadcast_md_client)(ModDataInfo *mdi, Client *acptr, ModData *md);
    833 extern MODVAR void (*broadcast_md_channel)(ModDataInfo *mdi, Channel *channel, ModData *md);
    834 extern MODVAR void (*broadcast_md_member)(ModDataInfo *mdi, Channel *channel, Member *m, ModData *md);
    835 extern MODVAR void (*broadcast_md_membership)(ModDataInfo *mdi, Client *acptr, Membership *m, ModData *md);
    836 extern MODVAR void (*broadcast_md_client_cmd)(Client *except, Client *sender, Client *acptr, const char *varname, const char *value);
    837 extern MODVAR void (*broadcast_md_channel_cmd)(Client *except, Client *sender, Channel *channel, const char *varname, const char *value);
    838 extern MODVAR void (*broadcast_md_member_cmd)(Client *except, Client *sender, Channel *channel, Client *acptr, const char *varname, const char *value);
    839 extern MODVAR void (*broadcast_md_membership_cmd)(Client *except, Client *sender, Client *acptr, Channel *channel, const char *varname, const char *value);
    840 extern MODVAR void (*moddata_add_s2s_mtags)(Client *client, MessageTag **mtags);
    841 extern MODVAR void (*moddata_extract_s2s_mtags)(Client *client, MessageTag *mtags);
    842 extern MODVAR void (*send_moddata_client)(Client *srv, Client *acptr);
    843 extern MODVAR void (*send_moddata_channel)(Client *srv, Channel *channel);
    844 extern MODVAR void (*send_moddata_members)(Client *srv);
    845 extern MODVAR void (*broadcast_moddata_client)(Client *acptr);
    846 extern MODVAR void (*introduce_user)(Client *to, Client *acptr);
    847 extern MODVAR int (*check_deny_version)(Client *cptr, const char *software, int protocol, const char *flags);
    848 extern MODVAR int (*match_user)(const char *rmask, Client *acptr, int options);
    849 extern MODVAR void (*userhost_save_current)(Client *client);
    850 extern MODVAR void (*userhost_changed)(Client *client);
    851 extern MODVAR void (*send_join_to_local_users)(Client *client, Channel *channel, MessageTag *mtags);
    852 extern MODVAR int (*do_nick_name)(char *nick);
    853 extern MODVAR int (*do_remote_nick_name)(char *nick);
    854 extern MODVAR const char *(*charsys_get_current_languages)(void);
    855 extern MODVAR void (*broadcast_sinfo)(Client *acptr, Client *to, Client *except);
    856 extern MODVAR void (*connect_server)(ConfigItem_link *aconf, Client *by, struct hostent *hp);
    857 extern MODVAR int (*is_services_but_not_ulined)(Client *client);
    858 extern MODVAR void (*parse_message_tags)(Client *cptr, char **str, MessageTag **mtag_list);
    859 extern MODVAR const char *(*mtags_to_string)(MessageTag *m, Client *acptr);
    860 extern MODVAR int (*can_send_to_channel)(Client *cptr, Channel *channel, const char **msgtext, const char **errmsg, int notice);
    861 extern MODVAR void (*broadcast_md_globalvar)(ModDataInfo *mdi, ModData *md);
    862 extern MODVAR void (*broadcast_md_globalvar_cmd)(Client *except, Client *sender, const char *varname, const char *value);
    863 extern MODVAR int (*tkl_ip_hash)(const char *ip);
    864 extern MODVAR int (*tkl_ip_hash_type)(int type);
    865 extern MODVAR int (*find_tkl_exception)(int ban_type, Client *cptr);
    866 extern MODVAR int (*server_ban_parse_mask)(Client *client, int add, char type, const char *str, char **usermask_out, char **hostmask_out, int *soft, const char **error);
    867 extern MODVAR int (*server_ban_exception_parse_mask)(Client *client, int add, const char *bantypes, const char *str, char **usermask_out, char **hostmask_out, int *soft, const char **error);
    868 extern MODVAR void (*tkl_added)(Client *client, TKL *tkl);
    869 extern MODVAR int (*del_silence)(Client *client, const char *mask);
    870 extern MODVAR int (*add_silence)(Client *client, const char *mask, int senderr);
    871 extern MODVAR int (*is_silenced)(Client *client, Client *acptr);
    872 extern MODVAR void *(*labeled_response_save_context)(void);
    873 extern MODVAR void (*labeled_response_set_context)(void *ctx);
    874 extern MODVAR void (*labeled_response_force_end)(void);
    875 extern MODVAR void (*kick_user)(MessageTag *mtags, Channel *channel, Client *client, Client *victim, const char *comment);
    876 extern MODVAR int (*watch_add)(const char *nick, Client *client, int flags);
    877 extern MODVAR int (*watch_del)(const char *nick, Client *client, int flags);
    878 extern MODVAR int (*watch_del_list)(Client *client, int flags);
    879 extern MODVAR Watch *(*watch_get)(const char *nick);
    880 extern MODVAR int (*watch_check)(Client *client, int reply, int (*watch_notify)(Client *client, Watch *watch, Link *lp, int event));
    881 extern MODVAR char *(*tkl_uhost)(TKL *tkl, char *buf, size_t buflen, int options);
    882 extern MODVAR void (*do_unreal_log_remote_deliver)(LogLevel loglevel, const char *subsystem, const char *event_id, MultiLine *msg, const char *json_serialized);
    883 extern MODVAR char *(*get_chmodes_for_user)(Client *client, const char *flags);
    884 extern MODVAR WhoisConfigDetails (*whois_get_policy)(Client *client, Client *target, const char *name);
    885 extern MODVAR int (*make_oper)(Client *client, const char *operblock_name, const char *operclass, ConfigItem_class *clientclass, long modes, const char *snomask, const char *vhost);
    886 extern MODVAR int (*unreal_match_iplist)(Client *client, NameList *l);
    887 extern MODVAR void (*webserver_send_response)(Client *client, int status, char *msg);
    888 extern MODVAR void (*webserver_close_client)(Client *client);
    889 extern MODVAR int (*webserver_handle_body)(Client *client, WebRequest *web, const char *readbuf, int length);
    890 extern MODVAR void (*rpc_response)(Client *client, json_t *request, json_t *result);
    891 extern MODVAR void (*rpc_error)(Client *client, json_t *request, JsonRpcError error_code, const char *error_message);
    892 extern MODVAR void (*rpc_error_fmt)(Client *client, json_t *request, JsonRpcError error_code, FORMAT_STRING(const char *fmt), ...) __attribute__((format(printf,4,5)));
    893 extern MODVAR void (*rpc_send_request_to_remote)(Client *source, Client *target, json_t *request);
    894 extern MODVAR void (*rpc_send_response_to_remote)(Client *source, Client *target, json_t *request);
    895 extern MODVAR int (*rrpc_supported_simple)(Client *target, char **problem_server);
    896 extern MODVAR int (*rrpc_supported)(Client *target, const char *module, const char *minimum_version, char **problem_server);
    897 extern MODVAR int (*websocket_handle_websocket)(Client *client, WebRequest *web, const char *readbuf2, int length2, int callback(Client *client, char *buf, int len));
    898 extern MODVAR int (*websocket_create_packet)(int opcode, char **buf, int *len);
    899 extern MODVAR int (*websocket_create_packet_ex)(int opcode, char **buf, int *len, char *sendbuf, size_t sendbufsize);
    900 extern MODVAR int (*websocket_create_packet_simple)(int opcode, const char **buf, int *len);
    901 extern MODVAR const char *(*check_deny_link)(ConfigItem_link *link, int auto_connect);
    902 extern MODVAR void (*mtag_add_issued_by)(MessageTag **mtags, Client *client, MessageTag *recv_mtags);
    903 /* /Efuncs */
    904 
    905 /* TLS functions */
    906 extern int early_init_tls();
    907 extern int init_tls();
    908 extern int ssl_handshake(Client *);   /* Handshake the accpeted con.*/
    909 extern int ssl_client_handshake(Client *, ConfigItem_link *); /* and the initiated con.*/
    910 extern int unreal_tls_accept(Client *acptr, int fd);
    911 extern int unreal_tls_connect(Client *acptr, int fd);
    912 extern int SSL_smart_shutdown(SSL *ssl);
    913 extern const char *ssl_error_str(int err, int my_errno);
    914 extern void unreal_tls_client_handshake(int, int, void *);
    915 extern void SSL_set_nonblocking(SSL *s);
    916 extern SSL_CTX *init_ctx(TLSOptions *tlsoptions, int server);
    917 extern const char *tls_get_cipher(Client *client);
    918 extern TLSOptions *get_tls_options_for_client(Client *acptr);
    919 extern int outdated_tls_client(Client *acptr);
    920 extern const char *outdated_tls_client_build_string(const char *pattern, Client *acptr);
    921 extern int check_certificate_expiry_ctx(SSL_CTX *ctx, char **errstr);
    922 extern EVENT(tls_check_expiry);
    923 extern MODVAR EVP_MD *sha256_function;
    924 extern MODVAR EVP_MD *sha1_function;
    925 extern MODVAR EVP_MD *md5_function;
    926 /* End of TLS functions */
    927 
    928 /* Default handlers for efunctions */
    929 extern void parse_message_tags_default_handler(Client *client, char **str, MessageTag **mtag_list);
    930 extern const char *mtags_to_string_default_handler(MessageTag *m, Client *client);
    931 extern void *labeled_response_save_context_default_handler(void);
    932 extern void labeled_response_set_context_default_handler(void *ctx);
    933 extern void labeled_response_force_end_default_handler(void);
    934 extern int add_silence_default_handler(Client *client, const char *mask, int senderr);
    935 extern int del_silence_default_handler(Client *client, const char *mask);
    936 extern int is_silenced_default_handler(Client *client, Client *acptr);
    937 extern void do_unreal_log_remote_deliver_default_handler(LogLevel loglevel, const char *subsystem, const char *event_id, MultiLine *msg, const char *json_serialized);
    938 extern int make_oper_default_handler(Client *client, const char *operblock_name, const char *operclass, ConfigItem_class *clientclass, long modes, const char *snomask, const char *vhost);
    939 extern void webserver_send_response_default_handler(Client *client, int status, char *msg);
    940 extern void webserver_close_client_default_handler(Client *client);
    941 extern int webserver_handle_body_default_handler(Client *client, WebRequest *web, const char *readbuf, int length);
    942 extern void rpc_response_default_handler(Client *client, json_t *request, json_t *result);
    943 extern void rpc_error_default_handler(Client *client, json_t *request, JsonRpcError error_code, const char *error_message);
    944 extern void rpc_error_fmt_default_handler(Client *client, json_t *request, JsonRpcError error_code, const char *fmt, ...);
    945 extern void rpc_send_request_to_remote_default_handler(Client *source, Client *target, json_t *request);
    946 extern void rpc_send_response_to_remote_default_handler(Client *source, Client *target, json_t *response);
    947 extern int rrpc_supported_simple_default_handler(Client *target, char **problem_server);
    948 extern int rrpc_supported_default_handler(Client *target, const char *module, const char *minimum_version, char **problem_server);
    949 extern int websocket_handle_websocket_default_handler(Client *client, WebRequest *web, const char *readbuf2, int length2, int callback(Client *client, char *buf, int len));
    950 extern int websocket_create_packet_default_handler(int opcode, char **buf, int *len);
    951 extern int websocket_create_packet_ex_default_handler(int opcode, char **buf, int *len, char *sendbuf, size_t sendbufsize);
    952 extern int websocket_create_packet_simple_default_handler(int opcode, const char **buf, int *len);
    953 extern void mtag_add_issued_by_default_handler(MessageTag **mtags, Client *client, MessageTag *recv_mtags);
    954 /* End of default handlers for efunctions */
    955 
    956 extern MODVAR MOTDFile opermotd, svsmotd, motd, botmotd, smotd, rules;
    957 extern MODVAR int max_connection_count;
    958 extern int add_listmode(Ban **list, Client *cptr, Channel *channel, const char *banid);
    959 extern int add_listmode_ex(Ban **list, Client *cptr, Channel *channel, const char *banid, const char *setby, time_t seton);
    960 extern int del_listmode(Ban **list, Channel *channel, const char *banid);
    961 extern int Halfop_mode(long mode);
    962 extern const char *convert_regular_ban(char *mask, char *buf, size_t buflen);
    963 extern const char *clean_ban_mask(const char *, int, Client *, int);
    964 extern int find_invex(Channel *channel, Client *client);
    965 extern void DoMD5(char *mdout, const char *src, unsigned long n);
    966 extern char *md5hash(char *dst, const char *src, unsigned long n);
    967 extern char *sha256hash(char *dst, const char *src, unsigned long n);
    968 extern void sha256hash_binary(char *dst, const char *src, unsigned long n);
    969 extern void sha1hash_binary(char *dst, const char *src, unsigned long n);
    970 extern MODVAR TKL *tklines[TKLISTLEN];
    971 extern MODVAR TKL *tklines_ip_hash[TKLIPHASHLEN1][TKLIPHASHLEN2];
    972 extern const char *cmdname_by_spamftarget(int target);
    973 extern void unrealdns_delreq_bycptr(Client *cptr);
    974 extern void unrealdns_gethostbyname_link(const char *name, ConfigItem_link *conf, int ipv4_only);
    975 extern void unrealdns_delasyncconnects(void);
    976 extern EVENT(unrealdns_timeout);
    977 extern int is_autojoin_chan(const char *chname);
    978 extern void unreal_free_hostent(struct hostent *he);
    979 extern struct hostent *unreal_create_hostent(const char *name, const char *ip);
    980 extern const char *unreal_time_sync_error(void);
    981 extern int unreal_time_synch(int timeout);
    982 extern const char *getcloak(Client *client);
    983 extern MODVAR unsigned char param_to_slot_mapping[256];
    984 extern const char *cm_getparameter(Channel *channel, char mode);
    985 extern const char *cm_getparameter_ex(void **p, char mode);
    986 extern void cm_putparameter(Channel *channel, char mode, const char *str);
    987 extern void cm_putparameter_ex(void **p, char mode, const char *str);
    988 extern void cm_freeparameter(Channel *channel, char mode);
    989 extern void cm_freeparameter_ex(void **p, char mode, char *str);
    990 extern int file_exists(const char *file);
    991 extern time_t get_file_time(const char *fname);
    992 extern long get_file_size(const char *fname);
    993 extern void free_motd(MOTDFile *motd); /* s_serv.c */
    994 extern void fix_timers(void);
    995 extern const char *chfl_to_sjoin_symbol(int s);
    996 extern char chfl_to_chanmode(int s);
    997 extern void add_pending_net(Client *client, const char *str);
    998 extern void free_pending_net(Client *client);
    999 extern Client *find_non_pending_net_duplicates(Client *cptr);
   1000 extern PendingNet *find_pending_net_by_sid_butone(const char *sid, Client *exempt);
   1001 extern Client *find_pending_net_duplicates(Client *cptr, Client **srv, char **sid);
   1002 extern MODVAR char serveropts[];
   1003 extern MODVAR char *ISupportStrings[];
   1004 extern void read_packet(int fd, int revents, void *data);
   1005 extern int process_packet(Client *cptr, char *readbuf, int length, int killsafely);
   1006 extern int parse_chanmode(ParseMode *pm, const char *modebuf_in, const char *parabuf_in);
   1007 extern int dead_socket(Client *to, const char *notice);
   1008 extern Match *unreal_create_match(MatchType type, const char *str, char **error);
   1009 extern void unreal_delete_match(Match *m);
   1010 extern int unreal_match(Match *m, const char *str);
   1011 extern int unreal_match_method_strtoval(const char *str);
   1012 extern char *unreal_match_method_valtostr(int val);
   1013 #ifdef _WIN32
   1014 extern MODVAR BOOL IsService;
   1015 #endif
   1016 extern void extcmodes_check_for_changes(void);
   1017 extern void umodes_check_for_changes(void);
   1018 extern int config_parse_flood(const char *orig, int *times, int *period);
   1019 extern int swhois_add(Client *acptr, const char *tag, int priority, const char *swhois, Client *from, Client *skip);
   1020 extern int swhois_delete(Client *acptr, const char *tag, const char *swhois, Client *from, Client *skip);
   1021 extern void remove_oper_privileges(Client *client, int broadcast_mode_change);
   1022 extern int client_starttls(Client *acptr);
   1023 extern void start_server_handshake(Client *cptr);
   1024 extern void reject_insecure_server(Client *cptr);
   1025 extern void report_crash(void);
   1026 extern void modulemanager(int argc, char *argv[]);
   1027 extern int inet_pton4(const char *src, unsigned char *dst);
   1028 extern int inet_pton6(const char *src, unsigned char *dst);
   1029 extern int unreal_bind(int fd, const char *ip, int port, SocketType socket_type);
   1030 extern int unreal_connect(int fd, const char *ip, int port, SocketType socket_type);
   1031 extern int is_valid_ip(const char *str);
   1032 extern int ipv6_capable(void);
   1033 extern int unix_sockets_capable(void);
   1034 #ifdef _WIN32
   1035 extern void init_winsock(void);
   1036 #endif
   1037 extern MODVAR Client *remote_rehash_client;
   1038 extern MODVAR json_t *json_rehash_log;
   1039 extern MODVAR int debugfd;
   1040 extern void convert_to_absolute_path(char **path, const char *reldir);
   1041 extern int has_user_mode(Client *acptr, char mode);
   1042 extern int has_channel_mode(Channel *channel, char mode);
   1043 extern int has_channel_mode_raw(Cmode_t m, char mode);
   1044 extern Cmode_t get_extmode_bitbychar(char m);
   1045 extern long find_user_mode(char mode);
   1046 extern void start_listeners(void);
   1047 extern void buildvarstring(const char *inbuf, char *outbuf, size_t len, const char *name[], const char *value[]);
   1048 extern int reinit_tls(void);
   1049 extern CMD_FUNC(cmd_error);
   1050 extern CMD_FUNC(cmd_dns);
   1051 extern CMD_FUNC(cmd_info);
   1052 extern CMD_FUNC(cmd_summon);
   1053 extern CMD_FUNC(cmd_users);
   1054 extern CMD_FUNC(cmd_version);
   1055 extern CMD_FUNC(cmd_dalinfo);
   1056 extern CMD_FUNC(cmd_credits);
   1057 extern CMD_FUNC(cmd_license);
   1058 extern CMD_FUNC(cmd_module);
   1059 extern CMD_FUNC(cmd_rehash);
   1060 extern CMD_FUNC(cmd_die);
   1061 extern CMD_FUNC(cmd_restart);
   1062 extern void cmd_alias(Client *client, MessageTag *recv_mtags, int parc, const char *parv[], const char *cmd); /* special! */
   1063 extern const char *pcre2_version(void);
   1064 extern int get_terminal_width(void);
   1065 extern int has_common_channels(Client *c1, Client *c2);
   1066 extern int user_can_see_member(Client *user, Client *target, Channel *channel);
   1067 extern int invisible_user_in_channel(Client *target, Channel *channel);
   1068 extern MODVAR int tls_client_index;
   1069 extern TLSOptions *FindTLSOptionsForUser(Client *acptr);
   1070 extern int IsWebsocket(Client *acptr);
   1071 extern Policy policy_strtoval(const char *s);
   1072 extern const char *policy_valtostr(Policy policy);
   1073 extern char policy_valtochar(Policy policy);
   1074 extern int verify_certificate(SSL *ssl, const char *hostname, char **errstr);
   1075 extern const char *certificate_name(SSL *ssl);
   1076 extern void start_of_normal_client_handshake(Client *acptr);
   1077 extern void clicap_pre_rehash(void);
   1078 extern void clicap_check_for_changes(void);
   1079 extern void unload_all_unused_mtag_handlers(void);
   1080 extern void send_cap_notify(int add, const char *token);
   1081 extern void sendbufto_one(Client *to, char *msg, unsigned int quick);
   1082 extern MODVAR int current_serial;
   1083 extern const char *spki_fingerprint(Client *acptr);
   1084 extern const char *spki_fingerprint_ex(X509 *x509_cert);
   1085 extern int is_module_loaded(const char *name);
   1086 extern int is_blacklisted_module(const char *name);
   1087 extern void close_std_descriptors(void);
   1088 extern void banned_client(Client *acptr, const char *bantype, const char *reason, int global, int noexit);
   1089 extern char *mystpcpy(char *dst, const char *src);
   1090 extern size_t add_sjsby(char *buf, const char *setby, time_t seton);
   1091 extern MaxTarget *findmaxtarget(const char *cmd);
   1092 extern void setmaxtargets(const char *cmd, int limit);
   1093 extern void freemaxtargets(void);
   1094 extern int max_targets_for_command(const char *cmd);
   1095 extern void set_targmax_defaults(void);
   1096 extern void parse_chanmodes_protoctl(Client *client, const char *str);
   1097 extern void concat_params(char *buf, int len, int parc, const char *parv[]);
   1098 extern void charsys_check_for_changes(void);
   1099 extern MODVAR int maxclients;
   1100 extern int fast_badword_match(ConfigItem_badword *badword, const char *line);
   1101 extern int fast_badword_replace(ConfigItem_badword *badword, const char *line, char *buf, int max);
   1102 extern const char *stripbadwords(const char *str, ConfigItem_badword *start_bw, int *blocked);
   1103 extern int badword_config_process(ConfigItem_badword *ca, const char *str);
   1104 extern void badword_config_free(ConfigItem_badword *ca);
   1105 extern const char *badword_config_check_regex(const char *s, int fastsupport, int check_broadness);
   1106 extern AllowedChannelChars allowed_channelchars_strtoval(const char *str);
   1107 extern const char *allowed_channelchars_valtostr(AllowedChannelChars v);
   1108 extern HideIdleTimePolicy hideidletime_strtoval(const char *str);
   1109 extern const char *hideidletime_valtostr(HideIdleTimePolicy v);
   1110 extern long ClientCapabilityBit(const char *token);
   1111 extern int is_handshake_finished(Client *client);
   1112 extern void SetCapability(Client *acptr, const char *token);
   1113 extern void ClearCapability(Client *acptr, const char *token);
   1114 extern void new_message(Client *sender, MessageTag *recv_mtags, MessageTag **mtag_list);
   1115 extern void new_message_special(Client *sender, MessageTag *recv_mtags, MessageTag **mtag_list, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,4,5)));
   1116 extern void generate_batch_id(char *str);
   1117 extern MessageTag *find_mtag(MessageTag *mtags, const char *token);
   1118 extern MessageTag *duplicate_mtag(MessageTag *mtag);
   1119 #define safe_free_message_tags(x) do { if (x) free_message_tags(x); x = NULL; } while(0)
   1120 extern void free_message_tags(MessageTag *m);
   1121 extern int history_set_limit(const char *object, int max_lines, long max_t);
   1122 extern int history_add(const char *object, MessageTag *mtags, const char *line);
   1123 extern HistoryResult *history_request(const char *object, HistoryFilter *filter);
   1124 extern int history_destroy(const char *object);
   1125 extern int can_receive_history(Client *client);
   1126 extern void history_send_result(Client *client, HistoryResult *r);
   1127 extern void free_history_result(HistoryResult *r);
   1128 extern void free_history_filter(HistoryFilter *f);
   1129 extern void special_delayed_unloading(void);
   1130 extern int write_int64(FILE *fd, uint64_t t);
   1131 extern int write_int32(FILE *fd, uint32_t t);
   1132 extern int read_int64(FILE *fd, uint64_t *t);
   1133 extern int read_int32(FILE *fd, uint32_t *t);
   1134 extern int read_data(FILE *fd, void *buf, size_t len);
   1135 extern int write_data(FILE *fd, const void *buf, size_t len);
   1136 extern int write_str(FILE *fd, const char *x);
   1137 extern int read_str(FILE *fd, char **x);
   1138 extern void _free_entire_name_list(NameList *n);
   1139 extern void _add_name_list(NameList **list, const char *name);
   1140 extern void _del_name_list(NameList **list, const char *name);
   1141 extern NameList *find_name_list(NameList *list, const char *name);
   1142 extern NameList *find_name_list_match(NameList *list, const char *name);
   1143 extern int minimum_msec_since_last_run(struct timeval *tv_old, long minimum);
   1144 extern int unrl_utf8_validate(const char *str, const char **end);
   1145 extern char *unrl_utf8_make_valid(const char *str, char *outputbuf, size_t outputbuflen, int strict_length_check);
   1146 extern void utf8_test(void);
   1147 extern MODVAR int non_utf8_nick_chars_in_use;
   1148 extern void short_motd(Client *client);
   1149 extern int should_show_connect_info(Client *client);
   1150 extern void send_invalid_channelname(Client *client, const char *channelname);
   1151 extern int is_extended_ban(const char *str);
   1152 extern int is_extended_server_ban(const char *str);
   1153 extern int empty_mode(const char *m);
   1154 extern void free_multilinemode(MultiLineMode *m);
   1155 #define safe_free_multilinemode(m) do { if (m) free_multilinemode(m); m = NULL; } while(0)
   1156 extern int valid_sid(const char *name);
   1157 extern int valid_uid(const char *name);
   1158 extern void parse_client_queued(Client *client);
   1159 extern const char *sha256sum_file(const char *fname);
   1160 extern char *filename_strip_suffix(const char *fname, const char *suffix);
   1161 extern char *filename_add_suffix(const char *fname, const char *suffix);
   1162 extern int filename_has_suffix(const char *fname, const char *suffix);
   1163 extern void addmultiline(MultiLine **l, const char *line);
   1164 extern void freemultiline(MultiLine *l);
   1165 #define safe_free_multiline(x) do { if (x) freemultiline(x); x = NULL; } while(0)
   1166 extern MultiLine *line2multiline(const char *str);
   1167 extern void sendnotice_multiline(Client *client, MultiLine *m);
   1168 extern void unreal_del_quotes(char *i);
   1169 extern const char *unreal_add_quotes(const char *str);
   1170 extern int unreal_add_quotes_r(const char *i, char *o, size_t len);
   1171 extern void user_account_login(MessageTag *recv_mtags, Client *client);
   1172 extern void link_generator(void);
   1173 extern void update_throttling_timer_settings(void);
   1174 extern int hide_idle_time(Client *client, Client *target);
   1175 extern void lost_server_link(Client *serv, const char *tls_error_string);
   1176 extern const char *sendtype_to_cmd(SendType sendtype);
   1177 extern MODVAR MessageTagHandler *mtaghandlers;
   1178 extern MODVAR RPCHandler *rpchandlers;
   1179 #define nv_find_by_name(stru, name)       do_nv_find_by_name(stru, name, ARRAY_SIZEOF((stru)))
   1180 extern long do_nv_find_by_name(NameValue *table, const char *cmd, int numelements);
   1181 #define nv_find_by_value(stru, value)       do_nv_find_by_value(stru, value, ARRAY_SIZEOF((stru)))
   1182 extern const char *do_nv_find_by_value(NameValue *table, long value, int numelements);
   1183 extern void add_nvplist(NameValuePrioList **lst, int priority, const char *name, const char *value);
   1184 extern void add_fmt_nvplist(NameValuePrioList **lst, int priority, const char *name, FORMAT_STRING(const char *format), ...) __attribute__((format(printf,4,5)));
   1185 /** Combination of add_nvplist() and buildnumeric() for convenience - only used in WHOIS response functions.
   1186  * @param lst		The NameValuePrioList &head
   1187  * @param priority	The priority of the item being added
   1188  * @param name		The name of the item being added (eg: "certfp")
   1189  * @param to		The recipient
   1190  * @param numeric	The numeric, one of RPL_* or ERR_*, see include/numeric.h
   1191  * @param ...		The parameters for the numeric
   1192  * @note Be sure to provide the correct number and type of parameters that belong to the numeric. Check include/numeric.h when in doubt!
   1193  */
   1194 #define add_nvplist_numeric(lst, priority, name, to, numeric, ...) add_nvplist_numeric_fmt(lst, priority, name, to, numeric, STR_ ## numeric, ##__VA_ARGS__)
   1195 extern void add_nvplist_numeric_fmt(NameValuePrioList **lst, int priority, const char *name, Client *to, int numeric, FORMAT_STRING(const char *pattern), ...) __attribute__((format(printf,6,7)));
   1196 extern NameValuePrioList *find_nvplist(NameValuePrioList *list, const char *name);
   1197 extern const char *get_nvplist(NameValuePrioList *list, const char *name);
   1198 extern void free_nvplist(NameValuePrioList *lst);
   1199 extern void unreal_add_name_values(NameValuePrioList **n, const char *name, ConfigEntry *ce);
   1200 extern const char *namevalue(NameValuePrioList *n);
   1201 extern const char *namevalue_nospaces(NameValuePrioList *n);
   1202 extern const char *get_connect_extinfo(Client *client);
   1203 extern char *unreal_strftime(const char *str);
   1204 extern void strtolower(char *str);
   1205 extern void strtolower_safe(char *dst, const char *src, int size);
   1206 extern void strtoupper(char *str);
   1207 extern void strtoupper_safe(char *dst, const char *src, int size);
   1208 extern int running_interactively(void);
   1209 extern int terminal_supports_color(void);
   1210 extern void skip_whitespace(char **p);
   1211 extern void read_until(char **p, char *stopchars);
   1212 extern int is_ip_valid(const char *ip);
   1213 extern int is_file_readable(const char *file, const char *dir);
   1214 /* json.c */
   1215 extern int log_json_filter;
   1216 extern json_t *json_string_unreal(const char *s);
   1217 extern const char *json_object_get_string(json_t *j, const char *name);
   1218 extern int json_object_get_integer(json_t *j, const char *name, int default_value);
   1219 extern int json_object_get_boolean(json_t *j, const char *name, int default_value);
   1220 extern json_t *json_timestamp(time_t v);
   1221 extern const char *timestamp_iso8601_now(void);
   1222 extern const char *timestamp_iso8601(time_t v);
   1223 extern const char *json_get_value(json_t *t);
   1224 extern void json_expand_client(json_t *j, const char *key, Client *client, int detail);
   1225 extern void json_expand_client_security_groups(json_t *parent, Client *client);
   1226 extern void json_expand_channel(json_t *j, const char *key, Channel *channel, int detail);
   1227 extern void json_expand_tkl(json_t *j, const char *key, TKL *tkl, int detail);
   1228 /* end of json.c */
   1229 /* securitygroup.c start */
   1230 extern MODVAR SecurityGroup *securitygroups;
   1231 extern void unreal_delete_masks(ConfigItem_mask *m);
   1232 extern void unreal_add_masks(ConfigItem_mask **head, ConfigEntry *ce);
   1233 extern int unreal_mask_match(Client *acptr, ConfigItem_mask *m);
   1234 extern int unreal_mask_match_string(const char *name, ConfigItem_mask *m);
   1235 extern int test_match_item(ConfigFile *conf, ConfigEntry *cep, int *errors);
   1236 extern int test_match_block(ConfigFile *conf, ConfigEntry *ce, int *errors_out);
   1237 extern int test_match_block_too_broad(ConfigFile *conf, ConfigEntry *ce);
   1238 extern int security_group_valid_name(const char *name);
   1239 extern int security_group_exists(const char *name);
   1240 extern SecurityGroup *add_security_group(const char *name, int order);
   1241 extern SecurityGroup *find_security_group(const char *name);
   1242 extern void free_security_group(SecurityGroup *s);
   1243 extern void set_security_group_defaults(void);
   1244 extern int user_allowed_by_security_group(Client *client, SecurityGroup *s);
   1245 extern int user_allowed_by_security_group_name(Client *client, const char *secgroupname);
   1246 extern const char *get_security_groups(Client *client);
   1247 extern int test_match_item(ConfigFile *conf, ConfigEntry *cep, int *errors);
   1248 extern int conf_match_item(ConfigFile *conf, ConfigEntry *cep, SecurityGroup **block);
   1249 extern int test_match_block(ConfigFile *conf, ConfigEntry *ce, int *errors_out);
   1250 extern int conf_match_block(ConfigFile *conf, ConfigEntry *ce, SecurityGroup **block);
   1251 extern int test_extended_list(Extban *extban, ConfigEntry *cep, int *errors);
   1252 /* securitygroup.c end */
   1253 /* src/unrealdb.c start */
   1254 extern UnrealDB *unrealdb_open(const char *filename, UnrealDBMode mode, char *secret_block);
   1255 extern int unrealdb_close(UnrealDB *c);
   1256 extern char *unrealdb_test_db(const char *filename, char *secret_block);
   1257 extern int unrealdb_write_int64(UnrealDB *c, uint64_t t);
   1258 extern int unrealdb_write_int32(UnrealDB *c, uint32_t t);
   1259 extern int unrealdb_write_int16(UnrealDB *c, uint16_t t);
   1260 extern int unrealdb_write_str(UnrealDB *c, const char *x);
   1261 extern int unrealdb_write_char(UnrealDB *c, char t);
   1262 extern int unrealdb_read_int64(UnrealDB *c, uint64_t *t);
   1263 extern int unrealdb_read_int32(UnrealDB *c, uint32_t *t);
   1264 extern int unrealdb_read_int16(UnrealDB *c, uint16_t *t);
   1265 extern int unrealdb_read_str(UnrealDB *c, char **x);
   1266 extern int unrealdb_read_char(UnrealDB *c, char *t);
   1267 extern const char *unrealdb_test_secret(const char *name);
   1268 extern UnrealDBConfig *unrealdb_copy_config(UnrealDBConfig *src);
   1269 extern UnrealDBConfig *unrealdb_get_config(UnrealDB *db);
   1270 extern void unrealdb_free_config(UnrealDBConfig *c);
   1271 extern UnrealDBError unrealdb_get_error_code(void);
   1272 extern const char *unrealdb_get_error_string(void);
   1273 /* src/unrealdb.c end */
   1274 /* secret { } related stuff */
   1275 extern Secret *find_secret(const char *secret_name);
   1276 extern void free_secret_cache(SecretCache *c);
   1277 extern void free_secret(Secret *s);
   1278 extern Secret *secrets;
   1279 /* end */
   1280 extern int check_password_strength(const char *pass, int min_length, int strict, char **err);
   1281 extern int valid_secret_password(const char *pass, char **err);
   1282 extern int flood_limit_exceeded(Client *client, FloodOption opt);
   1283 extern FloodSettings *find_floodsettings_block(const char *name);
   1284 extern FloodSettings *get_floodsettings_for_user(Client *client, FloodOption opt);
   1285 extern MODVAR const char *floodoption_names[];
   1286 extern void flood_limit_exceeded_log(Client *client, const char *floodname);
   1287 /* logging */
   1288 extern int config_test_log(ConfigFile *conf, ConfigEntry *ce);
   1289 extern int config_run_log(ConfigFile *conf, ConfigEntry *ce);
   1290 extern const char *log_level_terminal_color(LogLevel loglevel);
   1291 #define TERMINAL_COLOR_RESET "\033[0m"
   1292 extern LogType log_type_stringtoval(const char *str);
   1293 extern const char *log_type_valtostring(LogType v);
   1294 #ifdef DEBUGMODE
   1295 #define unreal_log(...) do_unreal_log(__VA_ARGS__, log_data_source(__FILE__, __LINE__, __FUNCTION__), NULL)
   1296 #define unreal_log_raw(...) do_unreal_log_raw(__VA_ARGS__, log_data_source(__FILE__, __LINE__, __FUNCTION__), NULL)
   1297 #else
   1298 #define unreal_log(...) do_unreal_log(__VA_ARGS__, NULL)
   1299 #define unreal_log_raw(...) do_unreal_log_raw(__VA_ARGS__, NULL)
   1300 #endif
   1301 extern void do_unreal_log(LogLevel loglevel, const char *subsystem, const char *event_id, Client *client, const char *msg, ...) __attribute__((format(printf,5,0)));
   1302 extern void do_unreal_log_raw(LogLevel loglevel, const char *subsystem, const char *event_id, Client *client, const char *msg, ...);
   1303 extern void do_unreal_log_internal_from_remote(LogLevel loglevel, const char *subsystem, const char *event_id, MultiLine *msg, json_t *json, const char *json_serialized, Client *from_server);
   1304 extern LogData *log_data_string(const char *key, const char *str);
   1305 extern LogData *log_data_char(const char *key, const char c);
   1306 extern LogData *log_data_integer(const char *key, int64_t integer);
   1307 extern LogData *log_data_timestamp(const char *key, time_t ts);
   1308 extern LogData *log_data_client(const char *key, Client *client);
   1309 extern LogData *log_data_channel(const char *key, Channel *channel);
   1310 extern LogData *log_data_source(const char *file, int line, const char *function);
   1311 extern LogData *log_data_socket_error(int fd);
   1312 extern LogData *log_data_link_block(ConfigItem_link *link);
   1313 extern LogData *log_data_tkl(const char *key, TKL *tkl);
   1314 extern LogData *log_data_tls_error(void);
   1315 extern void log_pre_rehash(void);
   1316 extern int log_tests(void);
   1317 extern void config_pre_run_log(void);
   1318 extern void log_blocks_switchover(void);
   1319 extern void postconf_defaults_log_block(void);
   1320 extern int valid_loglevel(int v);
   1321 extern LogLevel log_level_stringtoval(const char *str);
   1322 extern const char *log_level_valtostring(LogLevel loglevel);
   1323 extern LogLevel log_level_stringtoval(const char *str);
   1324 extern int valid_event_id(const char *s);
   1325 extern int valid_subsystem(const char *s);
   1326 extern LogSource *add_log_source(const char *str);
   1327 extern void free_log_sources(LogSource *l);
   1328 extern int log_sources_match(LogSource *logsource, LogLevel loglevel, const char *subsystem, const char *event_id, int matched_already);
   1329 extern const char *timestamp_iso8601_now(void);
   1330 extern const char *timestamp_iso8601(time_t v);
   1331 extern int is_valid_snomask(char c);
   1332 extern int is_valid_snomask_string_testing(const char *str, char **wrong);
   1333 /* end of logging */
   1334 extern void add_fake_lag(Client *client, long msec);
   1335 extern char *prefix_with_extban(const char *remainder, BanContext *b, Extban *extban, char *buf, size_t buflen);
   1336 extern GeoIPResult *geoip_client(Client *client);
   1337 extern GeoIPResult *geoip_lookup(const char *ip);
   1338 extern void free_geoip_result(GeoIPResult *r);
   1339 extern const char *get_operlogin(Client *client);
   1340 extern const char *get_operclass(Client *client);
   1341 /* url stuff */
   1342 extern const char *unreal_mkcache(const char *url);
   1343 extern int has_cached_version(const char *url);
   1344 extern int url_is_valid(const char *);
   1345 extern const char *displayurl(const char *url);
   1346 extern char *url_getfilename(const char *url);
   1347 extern void download_file_async(const char *url, time_t cachetime, vFP callback, void *callback_data, char *original_url, int maxredirects);
   1348 extern void url_init(void);
   1349 extern void url_cancel_handle_by_callback_data(void *ptr);
   1350 extern EVENT(url_socket_timeout);
   1351 /* end of url stuff */
   1352 extern char *collapse(char *pattern);
   1353 extern void clear_scache_hash_table(void);
   1354 extern void sendto_one(Client *, MessageTag *mtags, FORMAT_STRING(const char *), ...) __attribute__((format(printf,3,4)));
   1355 extern void mark_data_to_send(Client *to);
   1356 extern EVENT(garbage_collect);
   1357 extern EVENT(loop_event);
   1358 extern EVENT(check_pings);
   1359 extern EVENT(handshake_timeout);
   1360 extern EVENT(check_deadsockets);
   1361 extern EVENT(try_connections);
   1362 extern const char *my_itoa(int i);
   1363 extern void load_tunefile(void);
   1364 extern EVENT(save_tunefile);
   1365 extern void read_motd(const char *filename, MOTDFile *motd);
   1366 extern int target_limit_exceeded(Client *client, void *target, const char *name);
   1367 extern void make_umodestr(void);
   1368 extern void initwhowas(void);
   1369 extern void uid_init(void);
   1370 extern const char *uid_get(void);
   1371 /* proc i/o */
   1372 extern void add_proc_io_server(void);
   1373 extern void procio_post_rehash(int failure);
   1374 /* end of proc i/o */
   1375 extern int minimum_msec_since_last_run(struct timeval *tv_old, long minimum);
   1376 extern long get_connected_time(Client *client);
   1377 extern time_t get_creationtime(Client *client);
   1378 extern const char *StripControlCodes(const char *text);
   1379 extern const char *StripControlCodesEx(const char *text, char *output, size_t outputlen, int strip_flags);
   1380 extern MODVAR Module *Modules;
   1381 extern const char *command_issued_by_rpc(MessageTag *mtags);