/** Initialize the connection class list.
* A connection class named "default" is created, with ping frequency,
* connection frequency, maximum links and max SendQ values from the
* corresponding configuration features.
*/
void init_class(void)
{
if (!connClassList) {
connClassList = (struct ConnectionClass*) make_class();
connClassList->next = 0;
}
/* We had better not try and free this... */
ConClass(connClassList) = "default";
PingFreq(connClassList) = feature_int(FEAT_PINGFREQUENCY);
ConFreq(connClassList) = feature_int(FEAT_CONNECTFREQUENCY);
MaxLinks(connClassList) = feature_int(FEAT_MAXIMUM_LINKS);
MaxSendq(connClassList) = feature_uint(FEAT_DEFAULTMAXSENDQLENGTH);
connClassList->valid = 1;
Links(connClassList) = 1;
}
/** Make sure we have a connection class named \a name.
* If one does not exist, create it. Then set its ping frequency,
* connection frequency, maximum link count, and max SendQ according
* to the parameters.
* @param[in] name Connection class name.
* @param[in] ping Ping frequency for clients in this class.
* @param[in] confreq Connection frequency for clients.
* @param[in] maxli Maximum link count for class.
* @param[in] sendq Max SendQ for clients.
*/
void add_class(char *name, unsigned int ping, unsigned int confreq,
unsigned int maxli, unsigned int sendq)
{
struct ConnectionClass* p;
Debug((DEBUG_DEBUG, "Add Class %s: cf: %u pf: %u ml: %u sq: %d",
name, confreq, ping, maxli, sendq));
assert(name != NULL);
p = do_find_class(name, 1);
if (!p)
p = make_class();
else
MyFree(ConClass(p));
ConClass(p) = name;
ConFreq(p) = confreq;
PingFreq(p) = ping;
MaxLinks(p) = maxli;
MaxSendq(p) = (sendq > 0U) ?
sendq : feature_uint(FEAT_DEFAULTMAXSENDQLENGTH);
p->valid = 1;
}
/** Return maximum SendQ length for a client.
* @param[in] cptr Local client to check.
* @return Number of bytes allowed in SendQ for \a cptr.
*/
unsigned int
get_sendq(struct Client *cptr)
{
assert(0 != cptr);
assert(0 != cli_local(cptr));
if (cli_max_sendq(cptr))
return cli_max_sendq(cptr);
else if (cli_confs(cptr)) {
struct SLink* tmp;
struct ConnectionClass* cl;
for (tmp = cli_confs(cptr); tmp; tmp = tmp->next) {
if (!tmp->value.aconf || !(cl = tmp->value.aconf->conn_class))
continue;
if (ConClass(cl) != NULL) {
cli_max_sendq(cptr) = MaxSendq(cl);
return cli_max_sendq(cptr);
}
}
}
return feature_uint(FEAT_DEFAULTMAXSENDQLENGTH);
}
/** Return a string describing important configuration information.
* @return Pointer to a static buffer.
*/
const char* debug_serveropts(void)
{
unsigned int bp;
int i = 0;
#define AddC(c) serveropts[i++] = (c)
bp = feature_uint(FEAT_BUFFERPOOL);
if (bp < 1000000) {
AddC('b');
if (bp > 99999)
AddC((char)('0' + (bp / 100000)));
if (bp > 9999)
AddC((char)('0' + (bp / 10000) % 10));
AddC((char)('0' + (bp / 1000) % 10));
} else {
AddC('B');
if (bp > 99999999)
AddC((char)('0' + (bp / 100000000)));
if (bp > 9999999)
AddC((char)('0' + (bp / 10000000) % 10));
AddC((char)('0' + (bp / 1000000) % 10));
}
#ifndef NDEBUG
AddC('A');
#endif
#ifdef DEBUGMODE
AddC('D');
#endif
if (feature_bool(FEAT_HUB))
AddC('H');
if (feature_bool(FEAT_IDLE_FROM_MSG))
AddC('M');
if (feature_bool(FEAT_RELIABLE_CLOCK))
AddC('R');
#if defined(USE_POLL) && defined(HAVE_POLL_H)
AddC('U');
#endif
#ifdef IPV6
AddC('6');
#endif
#if defined(USE_SSL)
AddC('S');
#endif
#if defined(USE_ZLIB)
AddC('Z');
#endif
#if defined(PCRE)
AddC('P');
#endif
#if defined(UNDERNET)
AddC('+'); AddC('U'); AddC('N'); AddC('E'); AddC('T');
#endif
#if defined(DDB)
AddC('+'); AddC('D'); AddC('D'); AddC('B');
#endif
serveropts[i] = '\0';
return serveropts;
}
/** Report memory usage statistics to a client.
* @param cptr Client to send data to.
* @param sd StatDesc that generated the stats request (ignored).
* @param param Extra parameter from user (ignored).
*/
void count_memory(struct Client *cptr, const struct StatDesc *sd,
char *param)
{
struct Client *acptr;
struct Invite *inv;
struct SLink *link;
struct Ban *ban;
struct Channel *chptr;
struct ConfItem *aconf;
const struct ConnectionClass* cltmp;
struct Membership* member;
int acc = 0, /* accounts */
c = 0, /* clients */
cn = 0, /* connections */
ch = 0, /* channels */
lcc = 0, /* local client conf links */
chb = 0, /* channel bans */
wwu = 0, /* whowas users */
cl = 0, /* classes */
co = 0, /* conf lines */
listeners = 0, /* listeners */
memberships = 0; /* channel memberships */
int usi = 0, /* users invited */
aw = 0, /* aways set */
wwa = 0, /* whowas aways */
gl = 0, /* glines */
ju = 0; /* jupes */
size_t chm = 0, /* memory used by channels */
chbm = 0, /* memory used by channel bans */
cm = 0, /* memory used by clients */
cnm = 0, /* memory used by connections */
us = 0, /* user structs */
usm = 0, /* memory used by user structs */
awm = 0, /* memory used by aways */
wwam = 0, /* whowas away memory used */
wwm = 0, /* whowas array memory used */
wt = 0, /* watch entrys */
wtm = 0, /* memory used by watchs */
#if defined(DDB)
dbs = 0, /* keys of database */
dbm = 0, /* memory used by DDB */
#endif
glm = 0, /* memory used by glines */
jum = 0, /* memory used by jupes */
com = 0, /* memory used by conf lines */
dbufs_allocated = 0, /* memory used by dbufs */
dbufs_used = 0, /* memory used by dbufs */
msg_allocated = 0, /* memory used by struct Msg */
msgbuf_allocated = 0, /* memory used by struct MsgBuf */
listenersm = 0, /* memory used by listetners */
rm = 0, /* res memory used */
totcl = 0, totch = 0, totww = 0, tot = 0;
count_whowas_memory(&wwu, &wwm, &wwa, &wwam);
wwm += sizeof(struct Whowas) * feature_uint(FEAT_NICKNAMEHISTORYLENGTH);
wwm += sizeof(struct Whowas *) * WW_MAX;
for (acptr = GlobalClientList; acptr; acptr = cli_next(acptr))
{
c++;
if (MyConnect(acptr))
{
cn++;
for (link = cli_confs(acptr); link; link = link->next)
lcc++;
}
if (cli_user(acptr))
{
for (inv = cli_user(acptr)->invited; inv; inv = inv->next_user)
usi++;
for (member = cli_user(acptr)->channel; member; member = member->next_channel)
++memberships;
if (cli_user(acptr)->away)
{
aw++;
awm += (strlen(cli_user(acptr)->away) + 1);
}
}
#if defined(UNDERNET)
if (IsAccount(acptr))
acc++;
#endif
}
cm = c * sizeof(struct Client);
cnm = cn * sizeof(struct Connection);
user_count_memory(&us, &usm);
for (chptr = GlobalChannelList; chptr; chptr = chptr->next)
{
ch++;
chm += (strlen(chptr->chname) + sizeof(struct Channel));
for (ban = chptr->banlist; ban; ban = ban->next)
{
chb++;
chbm += strlen(ban->who) + strlen(ban->banstr) + 2 + sizeof(*ban);
}
}
for (aconf = GlobalConfList; aconf; aconf = aconf->next)
{
co++;
com += aconf->host ? strlen(aconf->host) + 1 : 0;
com += aconf->passwd ? strlen(aconf->passwd) + 1 : 0;
com += aconf->name ? strlen(aconf->name) + 1 : 0;
com += sizeof(struct ConfItem);
}
for (cltmp = get_class_list(); cltmp; cltmp = cltmp->next)
cl++;
#if defined(USE_SSL)
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Clients %d(%zu) Connections %d(%zu) SSL %d", c, cm, cn, cnm, ssl_count());
#else
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Clients %d(%zu) Connections %d(%zu)", c, cm, cn, cnm);
#endif
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Users %zu(%zu) Accounts %d(%zu) Invites %d(%zu)",
us, usm, acc, acc * (ACCOUNTLEN + 1),
usi, usi * sizeof(struct Invite));
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":User channels %d(%zu) Aways %d(%zu)", memberships,
memberships * sizeof(struct Membership), aw, awm);
totcl = cm + cnm + us * sizeof(struct User) + memberships * sizeof(struct Membership) + awm;
totcl += lcc * sizeof(struct SLink) + usi * sizeof(struct SLink);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Conflines %d(%zu) Attached %d(%zu) Classes %d(%zu)",
co, com, lcc, lcc * sizeof(struct SLink),
cl, cl * sizeof(struct ConnectionClass));
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Channels %d(%zu) Bans %d(%zu)", ch, chm, chb, chbm);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Channel Members %d(%zu)", memberships,
memberships * sizeof(struct Membership));
totch = chm + chbm;
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Whowas Users %d(%zu) Away %d(%zu) Array %u(%zu)",
wwu, wwu * sizeof(struct User), wwa, wwam,
feature_uint(FEAT_NICKNAMEHISTORYLENGTH), wwm);
totww = wwu * sizeof(struct User) + wwam + wwm;
watch_count_memory(&wt, &wtm);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Watchs %d(%zu)", wt, wtm);
motd_memory_count(cptr);
gl = gline_memory_count(&glm);
ju = jupe_memory_count(&jum);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Glines %d(%zu) Jupes %d(%zu)", gl, glm, ju, jum);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Hash: client %d(%zu), chan is the same", HASHSIZE,
sizeof(void *) * HASHSIZE);
count_listener_memory(&listeners, &listenersm);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Listeners allocated %d(%zu)", listeners, listenersm);
#if defined(DDB)
ddb_count_memory(&dbs, &dbm);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":DDB keys allocated %d(%zu)", dbs, dbm);
#endif
/*
* NOTE: this count will be accurate only for the exact instant that this
* message is being sent, so the count is affected by the dbufs that
* are being used to send this message out. If this is not desired, move
* the dbuf_count_memory call to a place before we start sending messages
* and cache DBufAllocCount and DBufUsedCount in variables until they
* are sent.
*/
dbuf_count_memory(&dbufs_allocated, &dbufs_used);
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":DBufs allocated %u(%zu) used %u(%zu)", DBufAllocCount,
dbufs_allocated, DBufUsedCount, dbufs_used);
/* The DBuf caveats now count for this, but this routine now sends
* replies all on its own.
*/
msgq_count_memory(cptr, &msg_allocated, &msgbuf_allocated);
rm = cres_mem(cptr);
tot =
totww + totch + totcl + com + cl * sizeof(struct ConnectionClass) +
dbufs_allocated + msg_allocated + msgbuf_allocated + rm;
tot += sizeof(void *) * HASHSIZE * 3;
#if defined(MDEBUG)
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Allocations: %zu(%zu)",
fda_get_block_count(), fda_get_byte_count());
#endif
send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG,
":Total: ww %zu ch %zu cl %zu co %zu db %zu ms %zu mb %zu",
totww, totch, totcl, com, dbufs_allocated, msg_allocated,
msgbuf_allocated);
}
/** Read a 'packet' of data from a connection and process it. Read in
* 8k chunks to give a better performance rating (for server
* connections). Do some tricky stuff for client connections to make
* sure they don't do any flooding >:-) -avalon
* @param cptr Client from which to read data.
* @param socket_ready If non-zero, more data can be read from the client's socket.
* @return Positive number on success, zero on connection-fatal failure, negative
* if user is killed.
*/
static int read_packet(struct Client *cptr, int socket_ready)
{
unsigned int dolen = 0;
unsigned int length = 0;
if (socket_ready &&
!(IsUser(cptr) &&
DBufLength(&(cli_recvQ(cptr))) > feature_uint(FEAT_CLIENT_FLOOD))) {
#if defined(USE_SSL)
switch (client_recv(cptr, readbuf, sizeof(readbuf), &length)) {
#else
switch (os_recv_nonb(cli_fd(cptr), readbuf, sizeof(readbuf), &length)) {
#endif
case IO_SUCCESS:
if (length)
{
cli_lasttime(cptr) = CurrentTime;
ClearPingSent(cptr);
ClrFlag(cptr, FLAG_NONL);
if (cli_lasttime(cptr) > cli_since(cptr))
cli_since(cptr) = cli_lasttime(cptr);
}
break;
case IO_BLOCKED:
break;
case IO_FAILURE:
cli_error(cptr) = errno;
/* SetFlag(cptr, FLAG_DEADSOCKET); */
return 0;
}
}
/*
* For server connections, we process as many as we can without
* worrying about the time of day or anything :)
*/
if (length > 0 && IsServer(cptr))
return server_dopacket(cptr, readbuf, length);
else if (length > 0 && (IsHandshake(cptr) || IsConnecting(cptr)))
return connect_dopacket(cptr, readbuf, length);
else
{
/*
* 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 (length > 0 && dbuf_put(cptr, &(cli_recvQ(cptr)), readbuf, length) == 0)
return exit_client(cptr, cptr, &me, "dbuf_put fail");
if ((DBufLength(&(cli_recvQ(cptr))) > feature_uint(FEAT_CLIENT_FLOOD))
&& !IsChannelService(cptr))
return exit_client(cptr, cptr, &me, "Excess Flood");
while (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
(IsTrusted(cptr) || IsChannelService(cptr) || cli_since(cptr) - CurrentTime < 10))
{
dolen = dbuf_getmsg(&(cli_recvQ(cptr)), cli_buffer(cptr), BUFSIZE);
/*
* Devious looking...whats it do ? well..if a client
* sends a *long* message without any CR or LF, then
* dbuf_getmsg fails and we pull it out using this
* loop which just gets the next 512 bytes and then
* deletes the rest of the buffer contents.
* -avalon
*/
if (dolen == 0)
{
if (DBufLength(&(cli_recvQ(cptr))) < 510)
SetFlag(cptr, FLAG_NONL);
else
{
/* More than 512 bytes in the line - drop the input and yell
* at the client.
*/
DBufClear(&(cli_recvQ(cptr)));
send_reply(cptr, ERR_INPUTTOOLONG);
}
}
else if (client_dopacket(cptr, dolen) == CPTR_KILLED)
return CPTR_KILLED;
/*
* If it has become registered as a Server
* then skip the per-message parsing below.
*/
if (IsHandshake(cptr) || IsServer(cptr))
{
while (-1)
{
dolen = dbuf_get(&(cli_recvQ(cptr)), readbuf, sizeof(readbuf));
if (dolen <= 0)
return 1;
else if (dolen == 0)
{
if (DBufLength(&(cli_recvQ(cptr))) < 510)
SetFlag(cptr, FLAG_NONL);
else {
DBufClear(&(cli_recvQ(cptr)));
/* send_reply(cptr, ERR_INPUTTOOLONG); */
}
}
else if ((IsServer(cptr) &&
server_dopacket(cptr, readbuf, dolen) == CPTR_KILLED) ||
(!IsServer(cptr) &&
connect_dopacket(cptr, readbuf, dolen) == CPTR_KILLED))
return CPTR_KILLED;
}
}
}
/* If there's still data to process, wait 2 seconds first */
if (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
!t_onqueue(&(cli_proc(cptr))))
{
Debug((DEBUG_LIST, "Adding client process timer for %C", cptr));
cli_freeflag(cptr) |= FREEFLAG_TIMER;
timer_add(&(cli_proc(cptr)), client_timer_callback, cli_connect(cptr),
TT_RELATIVE, 2);
}
}
return 1;
}
/** Start a connection to another server.
* @param aconf Connect block data for target server.
* @param by Client who requested the connection (if any).
* @return Non-zero on success; zero on failure.
*/
int connect_server(struct ConfItem* aconf, struct Client* by)
{
struct Client* cptr = 0;
assert(0 != aconf);
if (aconf->dns_pending) {
sendto_opmask(0, SNO_OLDSNO, "Server %s connect DNS pending",
aconf->name);
return 0;
}
Debug((DEBUG_NOTICE, "Connect to %s[@%s]", aconf->name,
ircd_ntoa(&aconf->address.addr)));
if ((cptr = FindClient(aconf->name))) {
if (IsServer(cptr) || IsMe(cptr)) {
sendto_opmask(0, SNO_OLDSNO, "Server %s already present from %s",
aconf->name, cli_name(cli_from(cptr)));
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Server %s already present "
"from %s", by, aconf->name, cli_name(cli_from(cptr)));
}
return 0;
}
else if (IsHandshake(cptr) || IsConnecting(cptr)) {
if (by && IsUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Connection to %s already in "
"progress", by, cli_name(cptr));
}
return 0;
}
}
/*
* If we don't know the IP# for this host and it is a hostname and
* not a ip# string, then try and find the appropriate host record.
*/
if (!irc_in_addr_valid(&aconf->address.addr)
&& !ircd_aton(&aconf->address.addr, aconf->host)) {
char buf[HOSTLEN + 1];
host_from_uh(buf, aconf->host, HOSTLEN);
gethost_byname(buf, connect_dns_callback, aconf);
aconf->dns_pending = 1;
return 0;
}
cptr = make_client(NULL, STAT_UNKNOWN_SERVER);
/*
* Copy these in so we have something for error detection.
*/
ircd_strncpy(cli_name(cptr), aconf->name, HOSTLEN);
ircd_strncpy(cli_sockhost(cptr), aconf->host, HOSTLEN);
/*
* Attach config entries to client here rather than in
* completed_connection. This to avoid null pointer references
*/
attach_confs_byhost(cptr, aconf->host, CONF_SERVER);
if (!find_conf_byhost(cli_confs(cptr), aconf->host, CONF_SERVER)) {
sendto_opmask(0, SNO_OLDSNO, "Host %s is not enabled for "
"connecting: no Connect block", aconf->name);
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Connect to host %s failed: no "
"Connect block", by, aconf->name);
}
det_confs_butmask(cptr, 0);
free_client(cptr);
return 0;
}
/*
* attempt to connect to the server in the conf line
*/
if (!connect_inet(aconf, cptr)) {
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Couldn't connect to %s", by,
cli_name(cptr));
}
det_confs_butmask(cptr, 0);
free_client(cptr);
return 0;
}
/*
* NOTE: if we're here we have a valid C:Line and the client should
* have started the connection and stored the remote address/port and
* ip address name in itself
*
* The socket has been connected or connect is in progress.
*/
make_server(cptr);
if (by && IsUser(by)) {
ircd_snprintf(0, cli_serv(cptr)->by, sizeof(cli_serv(cptr)->by), "%s%s",
NumNick(by));
assert(0 == cli_serv(cptr)->user);
cli_serv(cptr)->user = cli_user(by);
cli_user(by)->refcnt++;
}
else {
*(cli_serv(cptr))->by = '\0';
/* strcpy(cptr->serv->by, "Auto"); */
}
cli_serv(cptr)->up = &me;
SetConnecting(cptr);
if (cli_fd(cptr) > HighestFd)
HighestFd = cli_fd(cptr);
LocalClientArray[cli_fd(cptr)] = cptr;
Count_newunknown(UserStats);
/* Actually we lie, the connect hasn't succeeded yet, but we have a valid
* cptr, so we register it now.
* Maybe these two calls should be merged.
*/
add_client_to_list(cptr);
hAddClient(cptr);
/* nextping = CurrentTime; */
return (s_state(&cli_socket(cptr)) == SS_CONNECTED) ?
completed_connection(cptr) : 1;
}
/** Find the real hostname for the host running the server (or one which
* matches the server's name) and its primary IP#. Hostname is stored
* in the client structure passed as a pointer.
*/
void init_server_identity(void)
{
const struct LocalConf* conf = conf_get_local();
assert(0 != conf);
ircd_strncpy(cli_name(&me), conf->name, HOSTLEN);
SetYXXServerName(&me, conf->numeric);
}
/** Process events on a client socket.
* @param ev Socket event structure that has a struct Connection as
* its associated data.
*/
static void client_sock_callback(struct Event* ev)
{
struct Client* cptr;
struct Connection* con;
char *fmt = "%s";
char *fallback = 0;
assert(0 != ev_socket(ev));
assert(0 != s_data(ev_socket(ev)));
con = (struct Connection*) s_data(ev_socket(ev));
assert(0 != con_client(con) || ev_type(ev) == ET_DESTROY);
cptr = con_client(con);
assert(0 == cptr || con == cli_connect(cptr));
switch (ev_type(ev)) {
case ET_DESTROY:
con_freeflag(con) &= ~FREEFLAG_SOCKET;
if (!con_freeflag(con) && !cptr)
free_connection(con);
#if defined(USE_SSL)
ssl_free(ev_socket(ev));
#endif
break;
case ET_CONNECT: /* socket connection completed */
if (!completed_connection(cptr) || IsDead(cptr))
fallback = cli_info(cptr);
break;
case ET_ERROR: /* an error occurred */
fallback = cli_info(cptr);
cli_error(cptr) = ev_data(ev);
/* If the OS told us we have a bad file descriptor, we should
* record that for future reference.
*/
if (cli_error(cptr) == EBADF)
cli_fd(cptr) = -1;
if (s_state(&(con_socket(con))) == SS_CONNECTING) {
completed_connection(cptr);
/* for some reason, the os_get_sockerr() in completed_connection()
* can return 0 even when ev_data(ev) indicates a real error, so
* re-assign the client error here.
*/
cli_error(cptr) = ev_data(ev);
break;
}
/*FALLTHROUGH*/
case ET_EOF: /* end of file on socket */
Debug((DEBUG_ERROR, "READ ERROR: fd = %d %d", cli_fd(cptr),
cli_error(cptr)));
SetFlag(cptr, FLAG_DEADSOCKET);
if ((IsServer(cptr) || IsHandshake(cptr)) && cli_error(cptr) == 0) {
exit_client_msg(cptr, cptr, &me, "Server %s closed the connection (%s)",
cli_name(cptr), cli_serv(cptr)->last_error_msg);
return;
} else {
fmt = "Read error: %s";
fallback = "EOF from client";
}
break;
case ET_WRITE: /* socket is writable */
ClrFlag(cptr, FLAG_BLOCKED);
if (cli_listing(cptr) && MsgQLength(&(cli_sendQ(cptr))) < 2048)
list_next_channels(cptr);
Debug((DEBUG_SEND, "Sending queued data to %C", cptr));
send_queued(cptr);
break;
case ET_READ: /* socket is readable */
if (!IsDead(cptr)) {
Debug((DEBUG_DEBUG, "Reading data from %C", cptr));
if (read_packet(cptr, 1) == 0) /* error while reading packet */
fallback = "EOF from client";
}
break;
default:
assert(0 && "Unrecognized socket event in client_sock_callback()");
break;
}
assert(0 == cptr || 0 == cli_connect(cptr) || con == cli_connect(cptr));
if (fallback) {
const char* msg = (cli_error(cptr)) ? strerror(cli_error(cptr)) : fallback;
if (!msg)
msg = "Unknown error";
exit_client_msg(cptr, cptr, &me, fmt, msg);
}
}
/** Process a timer on client socket.
* @param ev Timer event that has a struct Connection as its
* associated data.
*/
static void client_timer_callback(struct Event* ev)
{
struct Client* cptr;
struct Connection* con;
assert(0 != ev_timer(ev));
assert(0 != t_data(ev_timer(ev)));
assert(ET_DESTROY == ev_type(ev) || ET_EXPIRE == ev_type(ev));
con = (struct Connection*) t_data(ev_timer(ev));
assert(0 != con_client(con) || ev_type(ev) == ET_DESTROY);
cptr = con_client(con);
assert(0 == cptr || con == cli_connect(cptr));
if (ev_type(ev)== ET_DESTROY) {
con_freeflag(con) &= ~FREEFLAG_TIMER; /* timer has expired... */
if (!con_freeflag(con) && !cptr)
free_connection(con); /* client is being destroyed */
} else {
Debug((DEBUG_LIST, "Client process timer for %C expired; processing",
cptr));
read_packet(cptr, 0); /* read_packet will re-add timer if needed */
}
assert(0 == cptr || 0 == cli_connect(cptr) || con == cli_connect(cptr));
}
