[irc/rqf/shadowircd.git] / src / packet.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  packet.c: Packet handlers.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  Copyright (C) 1996-2002 Hybrid Development Team
 *  Copyright (C) 2002-2005 ircd-ratbox development team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id: packet.c 3446 2007-05-14 22:21:16Z jilles $
 */
#include "stdinc.h"
#include "s_conf.h"
#include "s_serv.h"
#include "client.h"
#include "common.h"
#include "ircd.h"
#include "parse.h"
#include "packet.h"
#include "irc_string.h"
#include "hook.h"
#include "send.h"

static char readBuf[READBUF_SIZE];
static void client_dopacket(struct Client *client_p, char *buffer, size_t length);


/*
 * parse_client_queued - parse client queued messages
 */
static void
parse_client_queued(struct Client *client_p)
{
	int dolen = 0;
	int checkflood = 1;

	if(IsAnyDead(client_p))
		return;

	if(IsUnknown(client_p))
	{
		for (;;)
		{
			if(client_p->localClient->sent_parsed >= client_p->localClient->allow_read)
				break;

			dolen = linebuf_get(&client_p->localClient->
					    buf_recvq, readBuf, READBUF_SIZE,
					    LINEBUF_COMPLETE, LINEBUF_PARSED);

			if(dolen <= 0 || IsDead(client_p))
				break;

			client_dopacket(client_p, readBuf, dolen);
			client_p->localClient->sent_parsed++;

			/* He's dead cap'n */
			if(IsAnyDead(client_p))
				return;
			/* if theyve dropped out of the unknown state, break and move
			 * to the parsing for their appropriate status.  --fl
			 */
			if(!IsUnknown(client_p))
			{
				/* reset their flood limits, they're now
				 * graced to flood
				 */
				client_p->localClient->sent_parsed = 0;
				break;
			}

		}
	}

	if(IsAnyServer(client_p) || IsExemptFlood(client_p))
	{
		while (!IsAnyDead(client_p) && (dolen = linebuf_get(&client_p->localClient->buf_recvq,
					   readBuf, READBUF_SIZE, LINEBUF_COMPLETE,
					   LINEBUF_PARSED)) > 0)
		{
			client_dopacket(client_p, readBuf, dolen);
		}
	}
	else if(IsClient(client_p))
	{

		if(IsOper(client_p) && ConfigFileEntry.no_oper_flood)
			checkflood = 0;
		/*
		 * Handle flood protection here - if we exceed our flood limit on
		 * messages in this loop, we simply drop out of the loop prematurely.
		 *   -- adrian
		 */
		for (;;)
		{
			/* This flood protection works as follows:
			 *
			 * A client is given allow_read lines to send to the server.  Every
			 * time a line is parsed, sent_parsed is increased.  sent_parsed
			 * is decreased by 1 every time flood_recalc is called.
			 *
			 * Thus a client can 'burst' allow_read lines to the server, any
			 * excess lines will be parsed one per flood_recalc() call.
			 *
			 * Therefore a client will be penalised more if they keep flooding,
			 * as sent_parsed will always hover around the allow_read limit
			 * and no 'bursts' will be permitted.
			 */
			if(checkflood)
			{
				if(client_p->localClient->sent_parsed >= client_p->localClient->allow_read)
					break;
			}

			/* allow opers 4 times the amount of messages as users. why 4?
			 * why not. :) --fl_
			 */
			else if(client_p->localClient->sent_parsed >= (4 * client_p->localClient->allow_read))
				break;

			dolen = linebuf_get(&client_p->localClient->
					    buf_recvq, readBuf, READBUF_SIZE,
					    LINEBUF_COMPLETE, LINEBUF_PARSED);

			if(!dolen)
				break;

			client_dopacket(client_p, readBuf, dolen);
			if(IsAnyDead(client_p))
				return;
			client_p->localClient->sent_parsed++;
		}
	}
}

/* flood_endgrace()
 *
 * marks the end of the clients grace period
 */
void
flood_endgrace(struct Client *client_p)
{
	SetFloodDone(client_p);

	/* Drop their flood limit back down */
	client_p->localClient->allow_read = MAX_FLOOD;

	/* sent_parsed could be way over MAX_FLOOD but under MAX_FLOOD_BURST,
	 * so reset it.
	 */
	client_p->localClient->sent_parsed = 0;
}

/*
 * flood_recalc
 *
 * recalculate the number of allowed flood lines. this should be called
 * once a second on any given client. We then attempt to flush some data.
 */
void
flood_recalc(int fd, void *data)
{
	struct Client *client_p = data;
	struct LocalUser *lclient_p = client_p->localClient;

	/* This can happen in the event that the client detached. */
	if(!lclient_p)
		return;

	/* allow a bursting client their allocation per second, allow
	 * a client whos flooding an extra 2 per second
	 */
	if(IsFloodDone(client_p))
		lclient_p->sent_parsed -= 2;
	else
		lclient_p->sent_parsed = 0;

	if(lclient_p->sent_parsed < 0)
		lclient_p->sent_parsed = 0;

	if(--lclient_p->actually_read < 0)
		lclient_p->actually_read = 0;

	parse_client_queued(client_p);

	if(IsAnyDead(client_p))
		return;

	/* and finally, reset the flood check */
	rb_setflush(fd, 1000, flood_recalc, client_p);
}

/*
 * read_ctrl_packet - Read a 'packet' of data from a servlink control
 *                    link and process it.
 */
void
read_ctrl_packet(int fd, void *data)
{
	struct Client *server = data;
	struct LocalUser *lserver = server->localClient;
	struct SlinkRpl *reply;
	int length = 0;
	unsigned char tmp[2];
	unsigned char *len = tmp;
	struct SlinkRplDef *replydef;
#ifdef USE_IODEBUG_HOOKS
	hook_data_int hdata;
#endif

	s_assert(lserver != NULL);
	if(IsAnyDead(server))
		return;

	reply = &lserver->slinkrpl;


	if(!reply->command)
	{
		reply->gotdatalen = 0;
		reply->readdata = 0;
		reply->data = NULL;

		length = read(fd, tmp, 1);

		if(length <= 0)
		{
			if((length == -1) && ignoreErrno(errno))
				goto nodata;
			error_exit_client(server, length);
			return;
		}

		reply->command = tmp[0];
	}

	for (replydef = slinkrpltab; replydef->handler; replydef++)
	{
		if((int)replydef->replyid == reply->command)
			break;
	}

	/* we should be able to trust a local slink process...
	 * and if it sends an invalid command, that's a bug.. */
	s_assert(replydef->handler);

	if((replydef->flags & SLINKRPL_FLAG_DATA) && (reply->gotdatalen < 2))
	{
		/* we need a datalen u16 which we don't have yet... */
		length = read(fd, len, (2 - reply->gotdatalen));
		if(length <= 0)
		{
			if((length == -1) && ignoreErrno(errno))
				goto nodata;
			error_exit_client(server, length);
			return;
		}

		if(reply->gotdatalen == 0)
		{
			reply->datalen = *len << 8;
			reply->gotdatalen++;
			length--;
			len++;
		}
		if(length && (reply->gotdatalen == 1))
		{
			reply->datalen |= *len;
			reply->gotdatalen++;
			if(reply->datalen > 0)
				reply->data = rb_malloc(reply->datalen);
		}

		if(reply->gotdatalen < 2)
			return;	/* wait for more data */
	}

	if(reply->readdata < reply->datalen)	/* try to get any remaining data */
	{
		length = read(fd, (reply->data + reply->readdata),
			      (reply->datalen - reply->readdata));
		if(length <= 0)
		{
			if((length == -1) && ignoreErrno(errno))
				goto nodata;
			error_exit_client(server, length);
			return;
		}

		reply->readdata += length;
		if(reply->readdata < reply->datalen)
			return;	/* wait for more data */
	}

#ifdef USE_IODEBUG_HOOKS
	hdata.client = server;
	hdata.arg1 = NULL;
	hdata.arg2 = reply->command;
	hdata.data = NULL;
	call_hook(h_iorecvctrl_id, &hdata);
#endif

	/* we now have the command and any data, pass it off to the handler */
	(*replydef->handler) (reply->command, reply->datalen, reply->data, server);

	/* reset SlinkRpl */
	if(reply->datalen > 0)
		rb_free(reply->data);
	reply->command = 0;

	if(IsAnyDead(server))
		return;

      nodata:
	/* If we get here, we need to register for another COMM_SELECT_READ */
	rb_setselect(fd, FDLIST_SERVER, COMM_SELECT_READ, read_ctrl_packet, server, 0);
}

/*
 * read_packet - Read a 'packet' of data from a connection and process it.
 */
void
read_packet(int fd, void *data)
{
	struct Client *client_p = data;
	struct LocalUser *lclient_p = client_p->localClient;
	int length = 0;
	int lbuf_len;

	int binary = 0;
#ifdef USE_IODEBUG_HOOKS
	hook_data_int hdata;
#endif
	if(IsAnyDead(client_p))
		return;

	/*
	 * Read some data. We *used to* do anti-flood protection here, but
	 * I personally think it makes the code too hairy to make sane.
	 *     -- adrian
	 */
	length = client_p->localClient->F->read_impl(client_p->localClient->F, readBuf, READBUF_SIZE);

	if(length <= 0)
	{
		if((length == -1) && ignoreErrno(errno))
		{
			rb_setselect(client_p->localClient->F->fd, FDLIST_IDLECLIENT,
				       COMM_SELECT_READ, read_packet, client_p, 0);
			return;
		}
		error_exit_client(client_p, length);
		return;
	}

#ifdef USE_IODEBUG_HOOKS
	hdata.client = client_p;
	hdata.arg1 = readBuf;
	hdata.arg2 = length;
	call_hook(h_iorecv_id, &hdata);
#endif

	if(client_p->localClient->lasttime < rb_current_time())
		client_p->localClient->lasttime = rb_current_time();
	client_p->flags &= ~FLAGS_PINGSENT;

	/*
	 * Before we even think of parsing what we just read, stick
	 * it on the end of the receive queue and do it when its
	 * turn comes around.
	 */
	if(IsHandshake(client_p) || IsUnknown(client_p))
		binary = 1;

	lbuf_len = linebuf_parse(&client_p->localClient->buf_recvq, readBuf, length, binary);

	lclient_p->actually_read += lbuf_len;

	if(IsAnyDead(client_p))
		return;
		
	/* Attempt to parse what we have */
	parse_client_queued(client_p);

	if(IsAnyDead(client_p))
		return;
		
	/* Check to make sure we're not flooding */
	if(!IsAnyServer(client_p) &&
	   (linebuf_alloclen(&client_p->localClient->buf_recvq) > ConfigFileEntry.client_flood))
	{
		if(!(ConfigFileEntry.no_oper_flood && IsOper(client_p)))
		{
			exit_client(client_p, client_p, client_p, "Excess Flood");
			return;
		}
	}

	/* If we get here, we need to register for another COMM_SELECT_READ */
	if(PARSE_AS_SERVER(client_p))
	{
		rb_setselect(client_p->localClient->F->fd, FDLIST_SERVER, COMM_SELECT_READ,
			      read_packet, client_p, 0);
	}
	else
	{
		rb_setselect(client_p->localClient->F->fd, FDLIST_IDLECLIENT,
			       COMM_SELECT_READ, read_packet, client_p, 0);
	}
}

/*
 * client_dopacket - copy packet to client buf and parse it
 *      client_p - pointer to client structure for which the buffer data
 *             applies.
 *      buffer - pointr to the buffer containing the newly read data
 *      length - number of valid bytes of data in the buffer
 *
 * Note:
 *      It is implicitly assumed that dopacket is called only
 *      with client_p of "local" variation, which contains all the
 *      necessary fields (buffer etc..)
 */
void
client_dopacket(struct Client *client_p, char *buffer, size_t length)
{
	s_assert(client_p != NULL);
	s_assert(buffer != NULL);

	if(client_p == NULL || buffer == NULL)
		return;
	if(IsAnyDead(client_p))
		return;
	/* 
	 * Update messages received
	 */
	++me.localClient->receiveM;
	++client_p->localClient->receiveM;

	/* 
	 * Update bytes received
	 */
	client_p->localClient->receiveB += length;

	if(client_p->localClient->receiveB > 1023)
	{
		client_p->localClient->receiveK += (client_p->localClient->receiveB >> 10);
		client_p->localClient->receiveB &= 0x03ff;	/* 2^10 = 1024, 3ff = 1023 */
	}

	me.localClient->receiveB += length;

	if(me.localClient->receiveB > 1023)
	{
		me.localClient->receiveK += (me.localClient->receiveB >> 10);
		me.localClient->receiveB &= 0x03ff;
	}

	parse(client_p, buffer, buffer + length);
}
Commit	Line	Data
21c9d815 VY	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* packet.c: Packet handlers.
	4	*
	5	* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
	6	* Copyright (C) 1996-2002 Hybrid Development Team
	7	* Copyright (C) 2002-2005 ircd-ratbox development team
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	22	* USA
	23	*
	24	* $Id: packet.c 3446 2007-05-14 22:21:16Z jilles $
	25	*/
	26	#include "stdinc.h"
	27	#include "s_conf.h"
	28	#include "s_serv.h"
	29	#include "client.h"
	30	#include "common.h"
	31	#include "ircd.h"
	32	#include "parse.h"
	33	#include "packet.h"
	34	#include "irc_string.h"
	35	#include "hook.h"
	36	#include "send.h"
	37
	38	static char readBuf[READBUF_SIZE];
	39	static void client_dopacket(struct Client client_p, char buffer, size_t length);
	40
	41
	42	/*
	43	* parse_client_queued - parse client queued messages
	44	*/
	45	static void
	46	parse_client_queued(struct Client *client_p)
	47	{
	48	int dolen = 0;
	49	int checkflood = 1;
	50
	51	if(IsAnyDead(client_p))
	52	return;
	53
	54	if(IsUnknown(client_p))
	55	{
	56	for (;;)
	57	{
	58	if(client_p->localClient->sent_parsed >= client_p->localClient->allow_read)
	59	break;
	60
	61	dolen = linebuf_get(&client_p->localClient->
	62	buf_recvq, readBuf, READBUF_SIZE,
	63	LINEBUF_COMPLETE, LINEBUF_PARSED);
	64
65	if(dolen <= 0 \|\| IsDead(client_p))
66	break;
67
68	client_dopacket(client_p, readBuf, dolen);
69	client_p->localClient->sent_parsed++;
70
71	/* He's dead cap'n */
72	if(IsAnyDead(client_p))
73	return;
74	/* if theyve dropped out of the unknown state, break and move
75	* to the parsing for their appropriate status. --fl
76	*/
77	if(!IsUnknown(client_p))
78	{
79	/* reset their flood limits, they're now
80	* graced to flood
81	*/
82	client_p->localClient->sent_parsed = 0;
83	break;
84	}
85
86	}
87	}
88
89	if(IsAnyServer(client_p) \|\| IsExemptFlood(client_p))
90	{
91	while (!IsAnyDead(client_p) && (dolen = linebuf_get(&client_p->localClient->buf_recvq,
92	readBuf, READBUF_SIZE, LINEBUF_COMPLETE,
93	LINEBUF_PARSED)) > 0)
94	{
95	client_dopacket(client_p, readBuf, dolen);
96	}
97	}
98	else if(IsClient(client_p))
99	{
100
101	if(IsOper(client_p) && ConfigFileEntry.no_oper_flood)
102	checkflood = 0;
103	/*
104	* Handle flood protection here - if we exceed our flood limit on
105	* messages in this loop, we simply drop out of the loop prematurely.
106	* -- adrian
107	*/
108	for (;;)
109	{
110	/* This flood protection works as follows:
111	*
112	* A client is given allow_read lines to send to the server. Every
113	* time a line is parsed, sent_parsed is increased. sent_parsed
114	* is decreased by 1 every time flood_recalc is called.
115	*
116	* Thus a client can 'burst' allow_read lines to the server, any
117	* excess lines will be parsed one per flood_recalc() call.
118	*
119	* Therefore a client will be penalised more if they keep flooding,
120	* as sent_parsed will always hover around the allow_read limit
121	* and no 'bursts' will be permitted.
122	*/
123	if(checkflood)
124	{
125	if(client_p->localClient->sent_parsed >= client_p->localClient->allow_read)
126	break;
127	}
128
129	/* allow opers 4 times the amount of messages as users. why 4?
130	* why not. :) --fl_
131	*/
132	else if(client_p->localClient->sent_parsed >= (4 * client_p->localClient->allow_read))
133	break;
134
135	dolen = linebuf_get(&client_p->localClient->
136	buf_recvq, readBuf, READBUF_SIZE,
137	LINEBUF_COMPLETE, LINEBUF_PARSED);
138
139	if(!dolen)
140	break;
141
142	client_dopacket(client_p, readBuf, dolen);
143	if(IsAnyDead(client_p))
144	return;
145	client_p->localClient->sent_parsed++;
146	}
147	}
148	}
149
150	/* flood_endgrace()
151	*
152	* marks the end of the clients grace period
153	*/
154	void
155	flood_endgrace(struct Client *client_p)
156	{
157	SetFloodDone(client_p);
158
159	/* Drop their flood limit back down */
160	client_p->localClient->allow_read = MAX_FLOOD;
161
162	/* sent_parsed could be way over MAX_FLOOD but under MAX_FLOOD_BURST,
163	* so reset it.
164	*/
165	client_p->localClient->sent_parsed = 0;
166	}
167
168	/*
169	* flood_recalc
170	*
171	* recalculate the number of allowed flood lines. this should be called
172	* once a second on any given client. We then attempt to flush some data.
173	*/
174	void
175	flood_recalc(int fd, void *data)
176	{
177	struct Client *client_p = data;
178	struct LocalUser *lclient_p = client_p->localClient;
179
180	/* This can happen in the event that the client detached. */
181	if(!lclient_p)
182	return;
183
184	/* allow a bursting client their allocation per second, allow
185	* a client whos flooding an extra 2 per second
186	*/
187	if(IsFloodDone(client_p))
188	lclient_p->sent_parsed -= 2;
189	else
190	lclient_p->sent_parsed = 0;
191
192	if(lclient_p->sent_parsed < 0)
193	lclient_p->sent_parsed = 0;
194
195	if(--lclient_p->actually_read < 0)
196	lclient_p->actually_read = 0;
197
198	parse_client_queued(client_p);
199
200	if(IsAnyDead(client_p))
201	return;
202
203	/* and finally, reset the flood check */
204	rb_setflush(fd, 1000, flood_recalc, client_p);
205	}
206
207	/*
208	* read_ctrl_packet - Read a 'packet' of data from a servlink control
209	* link and process it.
210	*/
211	void
212	read_ctrl_packet(int fd, void *data)
213	{
214	struct Client *server = data;
215	struct LocalUser *lserver = server->localClient;
216	struct SlinkRpl *reply;
217	int length = 0;
218	unsigned char tmp[2];
219	unsigned char *len = tmp;
220	struct SlinkRplDef *replydef;
221	#ifdef USE_IODEBUG_HOOKS
222	hook_data_int hdata;
223	#endif
224
225	s_assert(lserver != NULL);
226	if(IsAnyDead(server))
227	return;
228
229	reply = &lserver->slinkrpl;
230
231
232	if(!reply->command)
233	{
234	reply->gotdatalen = 0;
235	reply->readdata = 0;
236	reply->data = NULL;
237
238	length = read(fd, tmp, 1);
239
240	if(length <= 0)
241	{
242	if((length == -1) && ignoreErrno(errno))
243	goto nodata;
244	error_exit_client(server, length);
245	return;
246	}
247
248	reply->command = tmp[0];
249	}
250
251	for (replydef = slinkrpltab; replydef->handler; replydef++)
252	{
253	if((int)replydef->replyid == reply->command)
254	break;
255	}
256
257	/* we should be able to trust a local slink process...
258	* and if it sends an invalid command, that's a bug.. */
259	s_assert(replydef->handler);
260
261	if((replydef->flags & SLINKRPL_FLAG_DATA) && (reply->gotdatalen < 2))
262	{
263	/* we need a datalen u16 which we don't have yet... */
264	length = read(fd, len, (2 - reply->gotdatalen));
265	if(length <= 0)
266	{
267	if((length == -1) && ignoreErrno(errno))
268	goto nodata;
269	error_exit_client(server, length);
270	return;
271	}
272
273	if(reply->gotdatalen == 0)
274	{
275	reply->datalen = *len << 8;
276	reply->gotdatalen++;
277	length--;
278	len++;
279	}
280	if(length && (reply->gotdatalen == 1))
281	{
282	reply->datalen \|= *len;
283	reply->gotdatalen++;
284	if(reply->datalen > 0)
285	reply->data = rb_malloc(reply->datalen);
286	}
287
288	if(reply->gotdatalen < 2)
289	return; /* wait for more data */
290	}
291
292	if(reply->readdata < reply->datalen) /* try to get any remaining data */
293	{
294	length = read(fd, (reply->data + reply->readdata),
295	(reply->datalen - reply->readdata));
296	if(length <= 0)
297	{
298	if((length == -1) && ignoreErrno(errno))
299	goto nodata;
300	error_exit_client(server, length);
301	return;
302	}
303
304	reply->readdata += length;
305	if(reply->readdata < reply->datalen)
306	return; /* wait for more data */
307	}
308
309	#ifdef USE_IODEBUG_HOOKS
310	hdata.client = server;
311	hdata.arg1 = NULL;
312	hdata.arg2 = reply->command;
313	hdata.data = NULL;
314	call_hook(h_iorecvctrl_id, &hdata);
315	#endif
316
317	/* we now have the command and any data, pass it off to the handler */
318	(*replydef->handler) (reply->command, reply->datalen, reply->data, server);
319
320	/* reset SlinkRpl */
321	if(reply->datalen > 0)
322	rb_free(reply->data);
323	reply->command = 0;
324
325	if(IsAnyDead(server))
326	return;
327
328	nodata:
329	/* If we get here, we need to register for another COMM_SELECT_READ */
330	rb_setselect(fd, FDLIST_SERVER, COMM_SELECT_READ, read_ctrl_packet, server, 0);
331	}
332
333	/*
334	* read_packet - Read a 'packet' of data from a connection and process it.
335	*/
336	void
337	read_packet(int fd, void *data)
338	{
339	struct Client *client_p = data;
340	struct LocalUser *lclient_p = client_p->localClient;
341	int length = 0;
342	int lbuf_len;
343
344	int binary = 0;
345	#ifdef USE_IODEBUG_HOOKS
346	hook_data_int hdata;
347	#endif
348	if(IsAnyDead(client_p))
349	return;
350
351	/*
352	* Read some data. We used to do anti-flood protection here, but
353	* I personally think it makes the code too hairy to make sane.
354	* -- adrian
355	*/
356	length = client_p->localClient->F->read_impl(client_p->localClient->F, readBuf, READBUF_SIZE);
357
358	if(length <= 0)
359	{
360	if((length == -1) && ignoreErrno(errno))
361	{
362	rb_setselect(client_p->localClient->F->fd, FDLIST_IDLECLIENT,
363	COMM_SELECT_READ, read_packet, client_p, 0);
364	return;
365	}
366	error_exit_client(client_p, length);
367	return;
368	}
369
370	#ifdef USE_IODEBUG_HOOKS
371	hdata.client = client_p;
372	hdata.arg1 = readBuf;
373	hdata.arg2 = length;
374	call_hook(h_iorecv_id, &hdata);
375	#endif
376
377	if(client_p->localClient->lasttime < rb_current_time())
378	client_p->localClient->lasttime = rb_current_time();
379	client_p->flags &= ~FLAGS_PINGSENT;
380
381	/*
382	* Before we even think of parsing what we just read, stick
383	* it on the end of the receive queue and do it when its
384	* turn comes around.
385	*/
386	if(IsHandshake(client_p) \|\| IsUnknown(client_p))
387	binary = 1;
388
389	lbuf_len = linebuf_parse(&client_p->localClient->buf_recvq, readBuf, length, binary);
390
391	lclient_p->actually_read += lbuf_len;
392
393	if(IsAnyDead(client_p))
394	return;
395
396	/* Attempt to parse what we have */
397	parse_client_queued(client_p);
398
399	if(IsAnyDead(client_p))
400	return;
401
402	/* Check to make sure we're not flooding */
403	if(!IsAnyServer(client_p) &&
404	(linebuf_alloclen(&client_p->localClient->buf_recvq) > ConfigFileEntry.client_flood))
405	{
406	if(!(ConfigFileEntry.no_oper_flood && IsOper(client_p)))
407	{
408	exit_client(client_p, client_p, client_p, "Excess Flood");
409	return;
410	}
411	}
412
413	/* If we get here, we need to register for another COMM_SELECT_READ */
414	if(PARSE_AS_SERVER(client_p))
415	{
416	rb_setselect(client_p->localClient->F->fd, FDLIST_SERVER, COMM_SELECT_READ,
417	read_packet, client_p, 0);
418	}
419	else
420	{
421	rb_setselect(client_p->localClient->F->fd, FDLIST_IDLECLIENT,
422	COMM_SELECT_READ, read_packet, client_p, 0);
423	}
424	}
425
426	/*
427	* client_dopacket - copy packet to client buf and parse it
428	* client_p - pointer to client structure for which the buffer data
429	* applies.
430	* buffer - pointr to the buffer containing the newly read data
431	* length - number of valid bytes of data in the buffer
432	*
433	* Note:
434	* It is implicitly assumed that dopacket is called only
435	* with client_p of "local" variation, which contains all the
436	* necessary fields (buffer etc..)
437	*/
438	void
439	client_dopacket(struct Client client_p, char buffer, size_t length)
440	{
441	s_assert(client_p != NULL);
442	s_assert(buffer != NULL);
443
444	if(client_p == NULL \|\| buffer == NULL)
445	return;
446	if(IsAnyDead(client_p))
447	return;
448	/*
449	* Update messages received
450	*/
451	++me.localClient->receiveM;
452	++client_p->localClient->receiveM;
453
454	/*
455	* Update bytes received
456	*/
457	client_p->localClient->receiveB += length;
458
459	if(client_p->localClient->receiveB > 1023)
460	{
461	client_p->localClient->receiveK += (client_p->localClient->receiveB >> 10);
462	client_p->localClient->receiveB &= 0x03ff; /* 2^10 = 1024, 3ff = 1023 */
463	}
464
465	me.localClient->receiveB += length;
466
467	if(me.localClient->receiveB > 1023)
468	{
469	me.localClient->receiveK += (me.localClient->receiveB >> 10);
470	me.localClient->receiveB &= 0x03ff;
471	}
472
473	parse(client_p, buffer, buffer + length);
474	}