mirror of
https://github.com/matrix-construct/construct
synced 2024-11-26 08:42:34 +01:00
Trying to fix packet.c
This commit is contained in:
Valery Yatsko
parent
87116eca09
commit
4714a17f54
3 changed files with 363 additions and 478 deletions
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@ -627,6 +627,7 @@ extern void close_connection(struct Client *);
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extern void init_uid(void);
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extern char *generate_uid(void);
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void flood_endgrace(struct Client *);
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void allocate_away(struct Client *);
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void free_away(struct Client *);
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@ -48,7 +48,6 @@
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extern PF read_ctrl_packet;
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extern PF read_packet;
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extern PF flood_recalc;
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extern void flood_endgrace(struct Client *);
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extern EVH flood_recalc;
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#endif /* INCLUDED_packet_h */
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287
src/packet.c
287
src/packet.c
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@ -18,20 +18,20 @@
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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* USA
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*
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* $Id: packet.c 3446 2007-05-14 22:21:16Z jilles $
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* $Id: packet.c 25179 2008-03-30 16:34:57Z androsyn $
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*/
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#include "stdinc.h"
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#include "struct.h"
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#include "s_conf.h"
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#include "s_serv.h"
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#include "client.h"
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#include "common.h"
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#include "ircd.h"
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#include "parse.h"
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#include "packet.h"
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#include "irc_string.h"
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#include "match.h"
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#include "hook.h"
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#include "send.h"
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@ -58,7 +58,7 @@ parse_client_queued(struct Client *client_p)
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if(client_p->localClient->sent_parsed >= client_p->localClient->allow_read)
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break;
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dolen = linebuf_get(&client_p->localClient->
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dolen = rb_linebuf_get(&client_p->localClient->
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buf_recvq, readBuf, READBUF_SIZE,
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LINEBUF_COMPLETE, LINEBUF_PARSED);
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@ -82,13 +82,12 @@ parse_client_queued(struct Client *client_p)
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client_p->localClient->sent_parsed = 0;
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break;
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}
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}
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}
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if(IsAnyServer(client_p) || IsExemptFlood(client_p))
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{
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while (!IsAnyDead(client_p) && (dolen = linebuf_get(&client_p->localClient->buf_recvq,
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while (!IsAnyDead(client_p) && (dolen = rb_linebuf_get(&client_p->localClient->buf_recvq,
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readBuf, READBUF_SIZE, LINEBUF_COMPLETE,
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LINEBUF_PARSED)) > 0)
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{
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@ -132,7 +131,7 @@ parse_client_queued(struct Client *client_p)
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else if(client_p->localClient->sent_parsed >= (4 * client_p->localClient->allow_read))
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break;
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dolen = linebuf_get(&client_p->localClient->
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dolen = rb_linebuf_get(&client_p->localClient->
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buf_recvq, readBuf, READBUF_SIZE,
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LINEBUF_COMPLETE, LINEBUF_PARSED);
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@ -147,24 +146,6 @@ parse_client_queued(struct Client *client_p)
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}
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}
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/* flood_endgrace()
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*
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* marks the end of the clients grace period
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*/
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void
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flood_endgrace(struct Client *client_p)
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{
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SetFloodDone(client_p);
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/* Drop their flood limit back down */
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client_p->localClient->allow_read = MAX_FLOOD;
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/* sent_parsed could be way over MAX_FLOOD but under MAX_FLOOD_BURST,
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* so reset it.
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*/
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client_p->localClient->sent_parsed = 0;
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}
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/*
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* flood_recalc
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*
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@ -172,169 +153,64 @@ flood_endgrace(struct Client *client_p)
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* once a second on any given client. We then attempt to flush some data.
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*/
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void
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flood_recalc(int fd, void *data)
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flood_recalc(void *unused)
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{
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struct Client *client_p = data;
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struct LocalUser *lclient_p = client_p->localClient;
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rb_dlink_node *ptr, *next;
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struct Client *client_p;
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/* This can happen in the event that the client detached. */
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if(!lclient_p)
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return;
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RB_DLINK_FOREACH_SAFE(ptr, next, lclient_list.head)
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{
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client_p = ptr->data;
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if(unlikely(IsMe(client_p)))
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continue;
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if(unlikely(client_p->localClient == NULL))
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continue;
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/* allow a bursting client their allocation per second, allow
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* a client whos flooding an extra 2 per second
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*/
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if(IsFloodDone(client_p))
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lclient_p->sent_parsed -= 2;
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client_p->localClient->sent_parsed -= 2;
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else
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lclient_p->sent_parsed = 0;
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client_p->localClient->sent_parsed = 0;
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if(lclient_p->sent_parsed < 0)
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lclient_p->sent_parsed = 0;
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if(client_p->localClient->sent_parsed < 0)
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client_p->localClient->sent_parsed = 0;
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if(--lclient_p->actually_read < 0)
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lclient_p->actually_read = 0;
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if(--client_p->localClient->actually_read < 0)
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client_p->localClient->actually_read = 0;
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parse_client_queued(client_p);
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if(IsAnyDead(client_p))
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return;
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if(unlikely(IsAnyDead(client_p)))
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continue;
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/* and finally, reset the flood check */
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rb_setflush(fd, 1000, flood_recalc, client_p);
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}
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RB_DLINK_FOREACH_SAFE(ptr, next, unknown_list.head)
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{
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client_p = ptr->data;
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if(client_p->localClient == NULL)
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continue;
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client_p->localClient->sent_parsed--;
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if(client_p->localClient->sent_parsed < 0)
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client_p->localClient->sent_parsed = 0;
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if(--client_p->localClient->actually_read < 0)
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client_p->localClient->actually_read = 0;
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parse_client_queued(client_p);
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}
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}
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/*
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* read_ctrl_packet - Read a 'packet' of data from a servlink control
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* link and process it.
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*/
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void
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read_ctrl_packet(int fd, void *data)
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{
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struct Client *server = data;
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struct LocalUser *lserver = server->localClient;
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struct SlinkRpl *reply;
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int length = 0;
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unsigned char tmp[2];
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unsigned char *len = tmp;
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struct SlinkRplDef *replydef;
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#ifdef USE_IODEBUG_HOOKS
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hook_data_int hdata;
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#endif
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s_assert(lserver != NULL);
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if(IsAnyDead(server))
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return;
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reply = &lserver->slinkrpl;
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if(!reply->command)
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{
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reply->gotdatalen = 0;
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reply->readdata = 0;
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reply->data = NULL;
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length = read(fd, tmp, 1);
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if(length <= 0)
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{
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if((length == -1) && ignoreErrno(errno))
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goto nodata;
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error_exit_client(server, length);
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return;
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}
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reply->command = tmp[0];
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}
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for (replydef = slinkrpltab; replydef->handler; replydef++)
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{
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if((int)replydef->replyid == reply->command)
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break;
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}
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/* we should be able to trust a local slink process...
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* and if it sends an invalid command, that's a bug.. */
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s_assert(replydef->handler);
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if((replydef->flags & SLINKRPL_FLAG_DATA) && (reply->gotdatalen < 2))
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{
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/* we need a datalen u16 which we don't have yet... */
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length = read(fd, len, (2 - reply->gotdatalen));
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if(length <= 0)
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{
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if((length == -1) && ignoreErrno(errno))
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goto nodata;
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error_exit_client(server, length);
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return;
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}
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if(reply->gotdatalen == 0)
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{
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reply->datalen = *len << 8;
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reply->gotdatalen++;
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length--;
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len++;
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}
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if(length && (reply->gotdatalen == 1))
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{
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reply->datalen |= *len;
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reply->gotdatalen++;
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if(reply->datalen > 0)
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reply->data = rb_malloc(reply->datalen);
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}
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if(reply->gotdatalen < 2)
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return; /* wait for more data */
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}
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if(reply->readdata < reply->datalen) /* try to get any remaining data */
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{
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length = read(fd, (reply->data + reply->readdata),
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(reply->datalen - reply->readdata));
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if(length <= 0)
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{
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if((length == -1) && ignoreErrno(errno))
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goto nodata;
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error_exit_client(server, length);
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return;
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}
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reply->readdata += length;
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if(reply->readdata < reply->datalen)
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return; /* wait for more data */
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}
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#ifdef USE_IODEBUG_HOOKS
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hdata.client = server;
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hdata.arg1 = NULL;
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hdata.arg2 = reply->command;
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hdata.data = NULL;
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call_hook(h_iorecvctrl_id, &hdata);
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#endif
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/* we now have the command and any data, pass it off to the handler */
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(*replydef->handler) (reply->command, reply->datalen, reply->data, server);
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/* reset SlinkRpl */
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if(reply->datalen > 0)
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rb_free(reply->data);
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reply->command = 0;
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if(IsAnyDead(server))
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return;
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nodata:
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/* If we get here, we need to register for another COMM_SELECT_READ */
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rb_setselect(fd, FDLIST_SERVER, COMM_SELECT_READ, read_ctrl_packet, server, 0);
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}
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/*
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* read_packet - Read a 'packet' of data from a connection and process it.
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*/
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void
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read_packet(int fd, void *data)
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read_packet(rb_fde_t *F, void *data)
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{
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struct Client *client_p = data;
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struct LocalUser *lclient_p = client_p->localClient;
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@ -345,6 +221,10 @@ read_packet(int fd, void *data)
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#ifdef USE_IODEBUG_HOOKS
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hook_data_int hdata;
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#endif
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while(1) /* note..for things like rt sigio to work you *must* loop on read until you get EAGAIN */
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{
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if(IsAnyDead(client_p))
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return;
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@ -353,16 +233,19 @@ read_packet(int fd, void *data)
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* I personally think it makes the code too hairy to make sane.
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* -- adrian
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*/
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length = client_p->localClient->F->read_impl(client_p->localClient->F, readBuf, READBUF_SIZE);
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if(length <= 0)
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length = rb_read(client_p->localClient->F, readBuf, READBUF_SIZE);
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if(length < 0)
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{
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if((length == -1) && ignoreErrno(errno))
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if(rb_ignore_errno(errno))
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{
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rb_setselect(client_p->localClient->F->fd, FDLIST_IDLECLIENT,
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COMM_SELECT_READ, read_packet, client_p, 0);
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rb_setselect(client_p->localClient->F,
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RB_SELECT_READ, read_packet, client_p);
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} else
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error_exit_client(client_p, length);
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return;
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}
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} else
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if(length == 0)
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{
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error_exit_client(client_p, length);
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return;
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}
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@ -386,7 +269,7 @@ read_packet(int fd, void *data)
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if(IsHandshake(client_p) || IsUnknown(client_p))
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binary = 1;
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lbuf_len = linebuf_parse(&client_p->localClient->buf_recvq, readBuf, length, binary);
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lbuf_len = rb_linebuf_parse(&client_p->localClient->buf_recvq, readBuf, length, binary);
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lclient_p->actually_read += lbuf_len;
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@ -401,25 +284,22 @@ read_packet(int fd, void *data)
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/* Check to make sure we're not flooding */
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if(!IsAnyServer(client_p) &&
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(linebuf_alloclen(&client_p->localClient->buf_recvq) > ConfigFileEntry.client_flood))
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(rb_linebuf_alloclen(&client_p->localClient->buf_recvq) > ConfigFileEntry.client_flood))
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{
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if(!(ConfigFileEntry.no_oper_flood && IsOper(client_p)))
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{
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exit_client(client_p, client_p, client_p, "Excess Flood");
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return;
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}
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}
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/* If we get here, we need to register for another COMM_SELECT_READ */
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if(PARSE_AS_SERVER(client_p))
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/* bail if short read */
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if(length < READBUF_SIZE)
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{
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rb_setselect(client_p->localClient->F->fd, FDLIST_SERVER, COMM_SELECT_READ,
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read_packet, client_p, 0);
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rb_setselect(client_p->localClient->F, RB_SELECT_READ, read_packet, client_p);
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return;
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}
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else
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{
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rb_setselect(client_p->localClient->F->fd, FDLIST_IDLECLIENT,
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COMM_SELECT_READ, read_packet, client_p, 0);
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}
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}
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@ -455,20 +335,25 @@ client_dopacket(struct Client *client_p, char *buffer, size_t length)
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* Update bytes received
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*/
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client_p->localClient->receiveB += length;
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if(client_p->localClient->receiveB > 1023)
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{
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client_p->localClient->receiveK += (client_p->localClient->receiveB >> 10);
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client_p->localClient->receiveB &= 0x03ff; /* 2^10 = 1024, 3ff = 1023 */
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}
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me.localClient->receiveB += length;
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if(me.localClient->receiveB > 1023)
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{
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me.localClient->receiveK += (me.localClient->receiveB >> 10);
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me.localClient->receiveB &= 0x03ff;
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}
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parse(client_p, buffer, buffer + length);
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}
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/* flood_endgrace()
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*
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* marks the end of the clients grace period
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*/
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void
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flood_endgrace(struct Client *client_p)
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{
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SetFloodDone(client_p);
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/* Drop their flood limit back down */
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client_p->localClient->allow_read = MAX_FLOOD;
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/* sent_parsed could be way over MAX_FLOOD but under MAX_FLOOD_BURST,
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* so reset it.
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*/
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client_p->localClient->sent_parsed = 0;
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}
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