Module: ngircd.git Branch: master Commit: 2f7d0c08395b3239e446841e713e0e84385200ea URL: http://ngircd.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git&a=commit;h=2f7d0...

Author: Alexander Barton alex@barton.de Date: Mon Jan 16 00:26:12 2012 +0100

Limit channel invite and ban lists to 50 entries

- New function Lists_Count(). - New limit #define MAX_HNDL_CHANNEL_LISTS = 50. - New numeric #define ERR_LISTFULL_MSG(478). - Adjust numeric RPL_ISUPPORT2_MSG(005) accordingly ("MAXLIST")

---

src/ngircd/defines.h | 3 +++ src/ngircd/irc-info.c | 3 ++- src/ngircd/irc-mode.c | 6 ++++++ src/ngircd/lists.c | 22 ++++++++++++++++++++++ src/ngircd/lists.h | 1 + src/ngircd/messages.h | 3 ++- 6 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/src/ngircd/defines.h b/src/ngircd/defines.h index e758668..e7a14ef 100644 --- a/src/ngircd/defines.h +++ b/src/ngircd/defines.h @@ -181,6 +181,9 @@ /** Max. number of LIST replies. */ #define MAX_RPL_LIST 100

+/** Max. number of elemets allowed in channel invite and ban lists. */ +#define MAX_HNDL_CHANNEL_LISTS 50 + /** Max. number of channel modes with arguments per MODE command. */ #define MAX_HNDL_MODES_ARG 5

diff --git a/src/ngircd/irc-info.c b/src/ngircd/irc-info.c index fd4cbee..24f25af 100644 --- a/src/ngircd/irc-info.c +++ b/src/ngircd/irc-info.c @@ -1583,7 +1583,8 @@ IRC_Send_ISUPPORT(CLIENT * Client) return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client), CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1, COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1, - COMMAND_LEN - 113, MAX_HNDL_MODES_ARG); + COMMAND_LEN - 113, MAX_HNDL_MODES_ARG, + MAX_HNDL_CHANNEL_LISTS); } /* IRC_Send_ISUPPORT */

diff --git a/src/ngircd/irc-mode.c b/src/ngircd/irc-mode.c index bb78bcb..c85faa0 100644 --- a/src/ngircd/irc-mode.c +++ b/src/ngircd/irc-mode.c @@ -863,6 +863,12 @@ Add_Ban_Invite(char what, CLIENT *Prefix, CLIENT *Client, CHANNEL *Channel,

if (Lists_CheckDupeMask(list, mask)) return CONNECTED; + if (Client_Type(Client) == CLIENT_USER && + Lists_Count(list) >= MAX_HNDL_CHANNEL_LISTS) + return IRC_WriteStrClient(Client, ERR_LISTFULL_MSG, + Client_ID(Client), + Channel_Name(Channel), mask, + MAX_HNDL_CHANNEL_LISTS);

if (what == 'I') { if (!Channel_AddInvite(Channel, mask, false)) diff --git a/src/ngircd/lists.c b/src/ngircd/lists.c index fd86f30..c082f1c 100644 --- a/src/ngircd/lists.c +++ b/src/ngircd/lists.c @@ -385,4 +385,26 @@ Lists_Expire(struct list_head *h, const char *ListName) } }

+/** + * Return the number of entries of a list. + * + * @param h List head. + * @return Number of items. + */ +GLOBAL unsigned long +Lists_Count(struct list_head *h) +{ + struct list_elem *e; + unsigned long count = 0; + + assert(h != NULL); + + e = h->first; + while (e) { + count++; + e = e->next; + } + return count; +} + /* -eof- */ diff --git a/src/ngircd/lists.h b/src/ngircd/lists.h index d0b4d81..cb2e2c1 100644 --- a/src/ngircd/lists.h +++ b/src/ngircd/lists.h @@ -36,6 +36,7 @@ GLOBAL struct list_elem *Lists_CheckDupeMask PARAMS((const struct list_head *hea GLOBAL bool Lists_Add PARAMS((struct list_head *h, const char *Mask, time_t ValidUntil, const char *Reason)); GLOBAL void Lists_Del PARAMS((struct list_head *head, const char *Mask)); +GLOBAL unsigned long Lists_Count PARAMS((struct list_head *h));

GLOBAL void Lists_Free PARAMS((struct list_head *head));

diff --git a/src/ngircd/messages.h b/src/ngircd/messages.h index 761e36d..c5d8336 100644 --- a/src/ngircd/messages.h +++ b/src/ngircd/messages.h @@ -22,7 +22,7 @@ #define RPL_CREATED_MSG "003 %s :This server has been started %s" #define RPL_MYINFO_MSG "004 %s %s ngircd-%s %s %s" #define RPL_ISUPPORT1_MSG "005 %s RFC2812 IRCD=ngIRCd CASEMAPPING=ascii PREFIX=(ov)@+ CHANTYPES=#&+ CHANMODES=bI,k,l,imnOPRstz CHANLIMIT=#&+:%d :are supported on this server" -#define RPL_ISUPPORT2_MSG "005 %s CHANNELLEN=%d NICKLEN=%d TOPICLEN=%d AWAYLEN=%d KICKLEN=%d MODES=%d PENALTY :are supported on this server" +#define RPL_ISUPPORT2_MSG "005 %s CHANNELLEN=%d NICKLEN=%d TOPICLEN=%d AWAYLEN=%d KICKLEN=%d MODES=%d MAXLIST=bI:%d PENALTY :are supported on this server"

#define RPL_TRACELINK_MSG "200 %s Link %s-%s %s %s V%s %ld %d %d" #define RPL_TRACEOPERATOR_MSG "204 %s Oper 2 :%s" @@ -127,6 +127,7 @@ #define ERR_BANNEDFROMCHAN_MSG "474 %s %s :Cannot join channel (+b)" #define ERR_BADCHANNELKEY_MSG "475 %s %s :Cannot join channel (+k)" #define ERR_NOCHANMODES_MSG "477 %s %s :Channel doesn't support modes" +#define ERR_LISTFULL_MSG "478 %s %s %s: Channel list is full (%d)" #define ERR_NOPRIVILEGES_MSG "481 %s :Permission denied" #define ERR_CHANOPRIVSNEEDED_MSG "482 %s %s :You are not channel operator" #define ERR_CANTKILLSERVER_MSG "483 %s :You can't kill a server!"