* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
*/
+/** @file
+ * @brief Functions that now (or in the past) relied on BSD APIs.
+ * @version $Id$
+ */
+#include "config.h"
+
#include "s_bsd.h"
#include "client.h"
#include "IPcheck.h"
#include "channel.h"
#include "class.h"
#include "hash.h"
+#include "ircd_alloc.h"
#include "ircd_log.h"
+#include "ircd_features.h"
#include "ircd_osdep.h"
#include "ircd_reply.h"
+#include "ircd_snprintf.h"
#include "ircd_string.h"
#include "ircd.h"
#include "list.h"
#include "s_misc.h"
#include "s_user.h"
#include "send.h"
-#include "sprintf_irc.h"
+#include "ssl.h"
#include "struct.h"
-#include "support.h"
#include "sys.h"
#include "uping.h"
#include "version.h"
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
-#include <resolv.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/utsname.h>
#include <unistd.h>
-#ifdef USE_POLL
-#include <sys/poll.h>
-#endif /* USE_POLL */
-
-#ifndef INADDR_NONE
-#define INADDR_NONE 0xffffffff
-#endif
-
+/** Array of my own clients, indexed by file descriptor. */
struct Client* LocalClientArray[MAXCONNECTIONS];
+/** Maximum file descriptor in current use. */
int HighestFd = -1;
-struct sockaddr_in VirtualHost;
+/** Default local address for outbound IPv4 connections. */
+struct irc_sockaddr VirtualHost_v4;
+/** Default local address for outbound IPv6 connections. */
+struct irc_sockaddr VirtualHost_v6;
+/** Temporary buffer for reading data from a peer. */
static char readbuf[SERVER_TCP_WINDOW];
/*
const char* const NONB_ERROR_MSG = "error setting non-blocking for %s: %s";
const char* const PEERNAME_ERROR_MSG = "getpeername failed for %s: %s";
const char* const POLL_ERROR_MSG = "poll error for %s: %s";
+const char* const REGISTER_ERROR_MSG = "registering %s: %s";
const char* const REUSEADDR_ERROR_MSG = "error setting SO_REUSEADDR for %s: %s";
const char* const SELECT_ERROR_MSG = "select error for %s: %s";
const char* const SETBUFS_ERROR_MSG = "error setting buffer size for %s: %s";
const char* const SOCKET_ERROR_MSG = "error creating socket for %s: %s";
+const char* const TOS_ERROR_MSG = "error setting TOS for %s: %s";
-#ifdef GODMODE
-#ifndef NODNS
-#define NODNS
-#endif
-#ifndef NOFLOODCONTROL
-#define NOFLOODCONTROL
-#endif
-#endif
-
-#if !defined(USE_POLL)
-#if FD_SETSIZE < (MAXCONNECTIONS + 4)
-/*
- * Sanity check
- *
- * All operating systems work when MAXCONNECTIONS <= 252.
- * Most operating systems work when MAXCONNECTIONS <= 1020 and FD_SETSIZE is
- * updated correctly in the system headers (on BSD systems our sys.h has
- * defined FD_SETSIZE to MAXCONNECTIONS+4 before including the system's headers
- * but sys/types.h might have abruptly redefined it so the check is still
- * done), you might already need to recompile your kernel.
- * For larger FD_SETSIZE your milage may vary (kernel patches may be needed).
- * The check is _NOT_ done if we will not use FD_SETS at all (USE_POLL)
- */
-#error "FD_SETSIZE is too small or MAXCONNECTIONS too large."
-#endif
-#endif
+static void client_sock_callback(struct Event* ev);
+static void client_timer_callback(struct Event* ev);
/*
* been reassigned to a normal connection...
*/
-/*
- * report_error
- *
- * This a replacement for perror(). Record error to log and
- * also send a copy to all *LOCAL* opers online.
- *
- * text is a *format* string for outputting error. It must
- * contain only two '%s', the first will be replaced
- * by the sockhost from the cptr, and the latter will
- * be taken from sys_errlist[errno].
- *
- * cptr if not NULL, is the *LOCAL* client associated with
- * the error.
+/** Replacement for perror(). Record error to log. Send a copy to all
+ * *LOCAL* opers, but only if no errors were sent to them in the last
+ * 20 seconds.
+ * @param text A *format* string for outputting error. It must contain
+ * only two '%s', the first will be replaced by the sockhost from the
+ * cptr, and the latter will be taken from sys_errlist[errno].
+ * @param who The client associated with the error.
+ * @param err The errno value to display.
*/
void report_error(const char* text, const char* who, int err)
{
if (EmptyString(who))
who = "unknown";
- if (last_notice + 20 < CurrentTime) {
- /*
- * pace error messages so opers don't get flooded by transients
- */
- sendto_opmask_butone(0, SNO_OLDSNO, text, who, errmsg);
- last_notice = CurrentTime;
- }
+ sendto_opmask_butone_ratelimited(0, SNO_OLDSNO, &last_notice, text, who, errmsg);
log_write(LS_SOCKET, L_ERROR, 0, text, who, errmsg);
errno = errtmp;
}
-/*
- * connect_dns_callback - called when resolver query finishes
- * if the query resulted in a successful search, reply will contain
- * a non-null pointer, otherwise reply will be null.
- * if successful start the connection, otherwise notify opers
+/** Called when resolver query finishes. If the DNS lookup was
+ * successful, start the connection; otherwise notify opers of the
+ * failure.
+ * @param vptr The struct ConfItem representing the Connect block.
+ * @param hp A pointer to the DNS lookup results (NULL on failure).
*/
-static void connect_dns_callback(void* vptr, struct DNSReply* reply)
+static void connect_dns_callback(void* vptr, const struct irc_in_addr *addr, const char *h_name)
{
struct ConfItem* aconf = (struct ConfItem*) vptr;
+ assert(aconf);
aconf->dns_pending = 0;
- if (reply) {
- memcpy(&aconf->ipnum, reply->hp->h_addr, sizeof(struct in_addr));
- connect_server(aconf, 0, reply);
+ if (addr) {
+ memcpy(&aconf->address, addr, sizeof(aconf->address));
+ connect_server(aconf, 0);
}
else
sendto_opmask_butone(0, SNO_OLDSNO, "Connect to %s failed: host lookup",
aconf->name);
}
-/*
- * close_connections - closes all connections
- * close stderr if specified
+/** Closes all file descriptors.
+ * @param close_stderr If non-zero, also close stderr.
*/
void close_connections(int close_stderr)
{
int i;
- close(0);
- close(1);
if (close_stderr)
+ {
+ close(0);
+ close(1);
close(2);
+ }
for (i = 3; i < MAXCONNECTIONS; ++i)
close(i);
}
-/*
- * init_connection_limits - initialize process fd limit to
- * MAXCONNECTIONS
+/** Initialize process fd limit to MAXCONNECTIONS.
*/
int init_connection_limits(void)
{
if (0 == limit)
return 1;
if (limit < 0) {
- fprintf(stderr, "error setting max fd's to %d\n", limit);
+ fprintf(stderr, "error setting max fds to %d: %s\n", limit, strerror(errno));
}
else if (limit > 0) {
fprintf(stderr, "ircd fd table too big\nHard Limit: %d IRC max: %d\n",
return 0;
}
-/*
- * connect_inet - set up address and port and make a connection
+/** Set up address and port and make a connection.
+ * @param aconf Provides the connection information.
+ * @param cptr Client structure for the peer.
+ * @return Non-zero on success; zero on failure.
*/
static int connect_inet(struct ConfItem* aconf, struct Client* cptr)
{
- static struct sockaddr_in sin;
+ const struct irc_sockaddr *local;
+ IOResult result;
+ int family = 0;
+
assert(0 != aconf);
assert(0 != cptr);
/*
* Might as well get sockhost from here, the connection is attempted
* with it so if it fails its useless.
*/
- cptr->fd = socket(AF_INET, SOCK_STREAM, 0);
- if (-1 == cptr->fd) {
- cptr->error = errno;
- report_error(SOCKET_ERROR_MSG, cptr->name, errno);
- return 0;
- }
- if (cptr->fd >= MAXCLIENTS) {
- report_error(CONNLIMIT_ERROR_MSG, cptr->name, 0);
- close(cptr->fd);
- cptr->fd = -1;
- return 0;
- }
- /*
- * Bind to a local IP# (with unknown port - let unix decide) so
- * we have some chance of knowing the IP# that gets used for a host
- * with more than one IP#.
- *
- * No we don't bind it, not all OS's can handle connecting with
- * an already bound socket, different ip# might occur anyway
- * leading to a freezing select() on this side for some time.
- * I had this on my Linux 1.1.88 --Run
- */
-#ifdef VIRTUAL_HOST
- /*
- * No, we do bind it if we have virtual host support. If we don't
- * explicitly bind it, it will default to IN_ADDR_ANY and we lose
- * due to the other server not allowing our base IP --smg
- */
- if (bind(cptr->fd, (struct sockaddr*) &VirtualHost, sizeof(VirtualHost))) {
- report_error(BIND_ERROR_MSG, cptr->name, errno);
+ if (irc_in_addr_valid(&aconf->origin.addr))
+ local = &aconf->origin;
+ else if (irc_in_addr_is_ipv4(&aconf->address.addr)) {
+ local = &VirtualHost_v4;
+ family = AF_INET;
+ } else
+ local = &VirtualHost_v6;
+ cli_fd(cptr) = os_socket(local, SOCK_STREAM, cli_name(cptr), family);
+ if (cli_fd(cptr) < 0)
return 0;
- }
-#endif
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = aconf->ipnum.s_addr;
- sin.sin_port = htons(aconf->port);
/*
* save connection info in client
*/
- cptr->ip.s_addr = aconf->ipnum.s_addr;
- cptr->port = aconf->port;
- ircd_ntoa_r(cptr->sock_ip, (const char*) &cptr->ip);
+ memcpy(&cli_ip(cptr), &aconf->address.addr, sizeof(cli_ip(cptr)));
+ ircd_ntoa_r(cli_sock_ip(cptr), &cli_ip(cptr));
/*
* we want a big buffer for server connections
*/
- if (!os_set_sockbufs(cptr->fd, SERVER_TCP_WINDOW)) {
- cptr->error = errno;
- report_error(SETBUFS_ERROR_MSG, cptr->name, errno);
+ if (!os_set_sockbufs(cli_fd(cptr), feature_int(FEAT_SOCKSENDBUF), feature_int(FEAT_SOCKRECVBUF))) {
+ cli_error(cptr) = errno;
+ report_error(SETBUFS_ERROR_MSG, cli_name(cptr), errno);
+ close(cli_fd(cptr));
+ cli_fd(cptr) = -1;
return 0;
}
/*
- * ALWAYS set sockets non-blocking
+ * Set the TOS bits - this is nonfatal if it doesn't stick.
*/
- if (!os_set_nonblocking(cptr->fd)) {
- cptr->error = errno;
- report_error(NONB_ERROR_MSG, cptr->name, errno);
+ if (!os_set_tos(cli_fd(cptr), feature_int(FEAT_TOS_SERVER))) {
+ report_error(TOS_ERROR_MSG, cli_name(cptr), errno);
+ }
+ if ((result = os_connect_nonb(cli_fd(cptr), &aconf->address)) == IO_FAILURE) {
+ cli_error(cptr) = errno;
+ report_error(CONNECT_ERROR_MSG, cli_name(cptr), errno);
+ close(cli_fd(cptr));
+ cli_fd(cptr) = -1;
return 0;
}
- if (!os_connect_nonb(cptr->fd, &sin)) {
- cptr->error = errno;
- report_error(CONNECT_ERROR_MSG, cptr->name, errno);
+
+ if (!socket_add(&(cli_socket(cptr)), client_sock_callback,
+ (void*) cli_connect(cptr),
+ (result == IO_SUCCESS) ? SS_CONNECTED : SS_CONNECTING,
+ SOCK_EVENT_READABLE, cli_fd(cptr))) {
+ cli_error(cptr) = ENFILE;
+ report_error(REGISTER_ERROR_MSG, cli_name(cptr), ENFILE);
+ close(cli_fd(cptr));
+ cli_fd(cptr) = -1;
return 0;
}
+
+ if(aconf->usessl) {
+ struct SSLConnection *ssl = ssl_create_connect(cli_fd(cptr), cptr, SSLData_Client);
+ cli_connect(cptr)->con_ssl = ssl;
+ if(ssl_handshake(ssl)) {
+ unsigned int events = 0;
+ if(ssl_wantread(ssl))
+ events |= SOCK_EVENT_READABLE;
+ if(ssl_wantwrite(ssl))
+ events |= SOCK_EVENT_WRITABLE;
+ socket_events(&(cli_socket(cptr)), SOCK_ACTION_SET | events);
+ result = IO_BLOCKED;
+ }
+ }
+
+ cli_freeflag(cptr) |= FREEFLAG_SOCKET;
return 1;
}
-/*
- * deliver_it
- * Attempt to send a sequence of bytes to the connection.
- * Returns
- *
- * < 0 Some fatal error occurred, (but not EWOULDBLOCK).
- * This return is a request to close the socket and
- * clean up the link.
- *
- * >= 0 No real error occurred, returns the number of
- * bytes actually transferred. EWOULDBLOCK and other
- * possibly similar conditions should be mapped to
- * zero return. Upper level routine will have to
- * decide what to do with those unwritten bytes...
- *
- * *NOTE* alarm calls have been preserved, so this should
- * work equally well whether blocking or non-blocking
- * mode is used...
- *
- * We don't use blocking anymore, that is impossible with the
- * net.loads today anyway. Commented out the alarms to save cpu.
- * --Run
+/** Attempt to send a sequence of bytes to the connection.
+ * As a side effect, updates \a cptr's FLAG_BLOCKED setting
+ * and sendB/sendK fields.
+ * @param cptr Client that should receive data.
+ * @param buf Message buffer to send to client.
+ * @return Negative on connection-fatal error; otherwise
+ * number of bytes sent.
*/
unsigned int deliver_it(struct Client *cptr, struct MsgQ *buf)
{
unsigned int bytes_written = 0;
unsigned int bytes_count = 0;
+ IOResult result;
assert(0 != cptr);
- switch (os_sendv_nonb(cptr->fd, buf, &bytes_count, &bytes_written)) {
+ if(cli_connect(cptr)->con_ssl) {
+ result = ssl_send_encrypt(cli_connect(cptr)->con_ssl, buf, &bytes_count, &bytes_written);
+ } else {
+ result = os_sendv_nonb(cli_fd(cptr), buf, &bytes_count, &bytes_written);
+ }
+
+ switch (result) {
case IO_SUCCESS:
- cptr->flags &= ~FLAGS_BLOCKED;
+ ClrFlag(cptr, FLAG_BLOCKED);
- cptr->sendB += bytes_written;
- me.sendB += bytes_written;
- if (cptr->sendB > 1023) {
- cptr->sendK += (cptr->sendB >> 10);
- cptr->sendB &= 0x03ff; /* 2^10 = 1024, 3ff = 1023 */
- }
- if (me.sendB > 1023) {
- me.sendK += (me.sendB >> 10);
- me.sendB &= 0x03ff;
- }
- /*
- * XXX - hrmm.. set blocked here? the socket didn't
- * say it was blocked
- */
+ cli_sendB(cptr) += bytes_written;
+ cli_sendB(&me) += bytes_written;
+ /* A partial write implies that future writes will block. */
if (bytes_written < bytes_count)
- cptr->flags |= FLAGS_BLOCKED;
+ SetFlag(cptr, FLAG_BLOCKED);
break;
case IO_BLOCKED:
- cptr->flags |= FLAGS_BLOCKED;
+ SetFlag(cptr, FLAG_BLOCKED);
break;
case IO_FAILURE:
- cptr->error = errno;
- cptr->flags |= FLAGS_DEADSOCKET;
+ cli_error(cptr) = errno;
+ SetFlag(cptr, FLAG_DEADSOCKET);
break;
}
return bytes_written;
}
-
-void release_dns_reply(struct Client* cptr)
-{
- assert(0 != cptr);
- assert(MyConnect(cptr));
-
- if (cptr->dns_reply) {
- assert(0 < cptr->dns_reply->ref_count);
- --cptr->dns_reply->ref_count;
- cptr->dns_reply = 0;
- }
-}
-
-/*
- * completed_connection
- *
- * Complete non-blocking connect()-sequence. Check access and
+/** Complete non-blocking connect()-sequence. Check access and
* terminate connection, if trouble detected.
- *
- * Return TRUE, if successfully completed
- * FALSE, if failed and ClientExit
+ * @param cptr Client to which we have connected, with all ConfItem structs attached.
+ * @return Zero on failure (caller should exit_client()), non-zero on success.
*/
-static int completed_connection(struct Client* cptr)
+int completed_connection(struct Client* cptr)
{
struct ConfItem *aconf;
time_t newts;
* get the socket status from the fd first to check if
* connection actually succeeded
*/
- if ((cptr->error = os_get_sockerr(cptr->fd))) {
- const char* msg = strerror(cptr->error);
+ if ((cli_error(cptr) = os_get_sockerr(cli_fd(cptr)))) {
+ const char* msg = strerror(cli_error(cptr));
if (!msg)
msg = "Unknown error";
sendto_opmask_butone(0, SNO_OLDSNO, "Connection failed to %s: %s",
- cptr->name, msg);
+ cli_name(cptr), msg);
return 0;
}
- if (!(aconf = find_conf_byname(cptr->confs, cptr->name, CONF_SERVER))) {
- sendto_opmask_butone(0, SNO_OLDSNO, "Lost Server Line for %s", cptr->name);
+ if (!(aconf = find_conf_byname(cli_confs(cptr), cli_name(cptr), CONF_SERVER))) {
+ sendto_opmask_butone(0, SNO_OLDSNO, "Lost Server Line for %s", cli_name(cptr));
return 0;
}
+ if (s_state(&(cli_socket(cptr))) == SS_CONNECTING)
+ socket_state(&(cli_socket(cptr)), SS_CONNECTED);
if (!EmptyString(aconf->passwd))
sendrawto_one(cptr, MSG_PASS " :%s", aconf->passwd);
-#if 0
- /* dead code, already done in connect_server */
- make_server(cptr);
-#endif
/*
* Create a unique timestamp
*/
for (i = HighestFd; i > -1; --i) {
if ((acptr = LocalClientArray[i]) &&
(IsServer(acptr) || IsHandshake(acptr))) {
- if (acptr->serv->timestamp >= newts)
- newts = acptr->serv->timestamp + 1;
+ if (cli_serv(acptr)->timestamp >= newts)
+ newts = cli_serv(acptr)->timestamp + 1;
}
}
- assert(0 != cptr->serv);
+ assert(0 != cli_serv(cptr));
- cptr->serv->timestamp = newts;
+ cli_serv(cptr)->timestamp = newts;
SetHandshake(cptr);
/*
* Make us timeout after twice the timeout for DNS look ups
*/
- cptr->lasttime = CurrentTime;
- cptr->flags |= FLAGS_PINGSENT;
+ cli_lasttime(cptr) = CurrentTime;
+ ClearPingSent(cptr);
- sendrawto_one(cptr, MSG_SERVER " %s 1 %Tu %Tu J%s %s%s :%s",
- me.name, me.serv->timestamp, newts, MAJOR_PROTOCOL,
- NumServCap(&me), me.info);
+ sendrawto_one(cptr, MSG_SERVER " %s 1 %Tu %Tu J%s %s%s +%s6 :%s",
+ cli_name(&me), cli_serv(&me)->timestamp, newts,
+ MAJOR_PROTOCOL, NumServCap(&me),
+ feature_bool(FEAT_HUB) ? "h" : "", cli_info(&me));
return (IsDead(cptr)) ? 0 : 1;
}
-/*
- * close_connection
- *
- * Close the physical connection. This function must make
- * MyConnect(cptr) == FALSE, and set cptr->from == NULL.
+/** Close the physical connection. Side effects: MyConnect(cptr)
+ * becomes false and cptr->from becomes NULL.
+ * @param cptr Client to disconnect.
*/
void close_connection(struct Client *cptr)
{
if (IsServer(cptr)) {
ServerStats->is_sv++;
- ServerStats->is_sbs += cptr->sendB;
- ServerStats->is_sbr += cptr->receiveB;
- ServerStats->is_sks += cptr->sendK;
- ServerStats->is_skr += cptr->receiveK;
- ServerStats->is_sti += CurrentTime - cptr->firsttime;
- if (ServerStats->is_sbs > 1023) {
- ServerStats->is_sks += (ServerStats->is_sbs >> 10);
- ServerStats->is_sbs &= 0x3ff;
- }
- if (ServerStats->is_sbr > 1023) {
- ServerStats->is_skr += (ServerStats->is_sbr >> 10);
- ServerStats->is_sbr &= 0x3ff;
- }
+ ServerStats->is_sbs += cli_sendB(cptr);
+ ServerStats->is_sbr += cli_receiveB(cptr);
+ ServerStats->is_sti += CurrentTime - cli_firsttime(cptr);
/*
* If the connection has been up for a long amount of time, schedule
* a 'quick' reconnect, else reset the next-connect cycle.
*/
- if ((aconf = find_conf_exact(cptr->name, 0, cptr->sockhost, CONF_SERVER))) {
+ if ((aconf = find_conf_exact(cli_name(cptr), cptr, CONF_SERVER))) {
/*
- * Reschedule a faster reconnect, if this was a automaticly
+ * Reschedule a faster reconnect, if this was a automatically
* connected configuration entry. (Note that if we have had
* a rehash in between, the status has been changed to
* CONF_ILLEGAL). But only do this if it was a "good" link.
*/
aconf->hold = CurrentTime;
- aconf->hold += (aconf->hold - cptr->since > HANGONGOODLINK) ?
- HANGONRETRYDELAY : ConfConFreq(aconf);
- if (nextconnect > aconf->hold)
- nextconnect = aconf->hold;
+ aconf->hold += ((aconf->hold - cli_since(cptr) >
+ feature_int(FEAT_HANGONGOODLINK)) ?
+ feature_int(FEAT_HANGONRETRYDELAY) : ConfConFreq(aconf));
+/* if (nextconnect > aconf->hold) */
+/* nextconnect = aconf->hold; */
}
}
else if (IsUser(cptr)) {
ServerStats->is_cl++;
- ServerStats->is_cbs += cptr->sendB;
- ServerStats->is_cbr += cptr->receiveB;
- ServerStats->is_cks += cptr->sendK;
- ServerStats->is_ckr += cptr->receiveK;
- ServerStats->is_cti += CurrentTime - cptr->firsttime;
- if (ServerStats->is_cbs > 1023) {
- ServerStats->is_cks += (ServerStats->is_cbs >> 10);
- ServerStats->is_cbs &= 0x3ff;
- }
- if (ServerStats->is_cbr > 1023) {
- ServerStats->is_ckr += (ServerStats->is_cbr >> 10);
- ServerStats->is_cbr &= 0x3ff;
- }
+ ServerStats->is_cbs += cli_sendB(cptr);
+ ServerStats->is_cbr += cli_receiveB(cptr);
+ ServerStats->is_cti += CurrentTime - cli_firsttime(cptr);
}
else
ServerStats->is_ni++;
- if (-1 < cptr->fd) {
+ if(cli_connect(cptr)->con_ssl) {
+ ssl_free_connection(cli_connect(cptr)->con_ssl);
+ cli_connect(cptr)->con_ssl = NULL;
+ }
+
+ if (-1 < cli_fd(cptr)) {
flush_connections(cptr);
- LocalClientArray[cptr->fd] = 0;
- close(cptr->fd);
- cptr->fd = -1;
+ LocalClientArray[cli_fd(cptr)] = 0;
+ close(cli_fd(cptr));
+ socket_del(&(cli_socket(cptr))); /* queue a socket delete */
+ cli_fd(cptr) = -1;
}
- cptr->flags |= FLAGS_DEADSOCKET;
+ SetFlag(cptr, FLAG_DEADSOCKET);
- MsgQClear(&cptr->sendQ);
- DBufClear(&cptr->recvQ);
- memset(cptr->passwd, 0, sizeof(cptr->passwd));
+ MsgQClear(&(cli_sendQ(cptr)));
+ client_drop_sendq(cli_connect(cptr));
+ DBufClear(&(cli_recvQ(cptr)));
+ memset(cli_passwd(cptr), 0, sizeof(cli_passwd(cptr)));
set_snomask(cptr, 0, SNO_SET);
det_confs_butmask(cptr, 0);
- if (cptr->listener) {
- release_listener(cptr->listener);
- cptr->listener = 0;
+ if (cli_listener(cptr)) {
+ release_listener(cli_listener(cptr));
+ cli_listener(cptr) = 0;
}
for ( ; HighestFd > 0; --HighestFd) {
}
}
+/** Close all unregistered connections.
+ * @param source Oper who requested the close.
+ * @return Number of closed connections.
+ */
int net_close_unregistered_connections(struct Client* source)
{
int i;
return count;
}
-/*----------------------------------------------------------------------------
- * add_connection
- *
- * Creates a client which has just connected to us on the given fd.
+/** Creates a client which has just connected to us on the given fd.
* The sockhost field is initialized with the ip# of the host.
* The client is not added to the linked list of clients, it is
* passed off to the auth handler for dns and ident queries.
- *--------------------------------------------------------------------------*/
+ * @param listener Listening socket that received the connection.
+ * @param fd File descriptor of new connection.
+ */
void add_connection(struct Listener* listener, int fd) {
- struct sockaddr_in addr;
+ struct irc_sockaddr addr;
struct Client *new_client;
time_t next_target = 0;
const char* const throttle_message =
"ERROR :Your host is trying to (re)connect too fast -- throttled\r\n";
/* 12345678901234567890123456789012345679012345678901234567890123456 */
-
+ const char* const register_message =
+ "ERROR :Unable to complete your registration\r\n";
+
assert(0 != listener);
-
/*
* Removed preliminary access check. Full check is performed in m_server and
* m_user instead. Also connection time out help to get rid of unwanted
- * connections.
+ * connections.
*/
if (!os_get_peername(fd, &addr) || !os_set_nonblocking(fd)) {
++ServerStats->is_ref;
close(fd);
return;
}
-
/*
- * Add this local client to the IPcheck registry.
- *
- * If they're throttled, murder them, but tell them why first.
+ * Disable IP (*not* TCP) options. In particular, this makes it impossible
+ * to use source routing to connect to the server. If we didn't do this
+ * (and if intermediate networks didn't drop source-routed packets), an
+ * attacker could successfully IP spoof us...and even return the anti-spoof
+ * ping, because the options would cause the packet to be routed back to
+ * the spoofer's machine. When we disable the IP options, we delete the
+ * source route, and the normal routing takes over.
*/
- if (!IPcheck_local_connect(addr.sin_addr, &next_target) && !listener->server) {
- ++ServerStats->is_ref;
- write(fd, throttle_message, strlen(throttle_message));
- close(fd);
- return;
- }
+ os_disable_options(fd);
- new_client = make_client(0, ((listener->server) ?
- STAT_UNKNOWN_SERVER : STAT_UNKNOWN_USER));
+ if (listener_server(listener))
+ {
+ new_client = make_client(0, STAT_UNKNOWN_SERVER);
+ }
+ else
+ {
+ /*
+ * Add this local client to the IPcheck registry.
+ *
+ * If they're throttled, murder them, but tell them why first.
+ */
+ if (!IPcheck_local_connect(&addr.addr, &next_target))
+ {
+ ++ServerStats->is_ref;
+ write(fd, throttle_message, strlen(throttle_message));
+ close(fd);
+ return;
+ }
+ new_client = make_client(0, STAT_UNKNOWN_USER);
+ SetIPChecked(new_client);
+ }
/*
* Copy ascii address to 'sockhost' just in case. Then we have something
- * valid to put into error messages...
+ * valid to put into error messages...
*/
- ircd_ntoa_r(new_client->sock_ip, (const char*) &addr.sin_addr);
- strcpy(new_client->sockhost, new_client->sock_ip);
- new_client->ip.s_addr = addr.sin_addr.s_addr;
- new_client->port = ntohs(addr.sin_port);
+ ircd_ntoa_r(cli_sock_ip(new_client), &addr.addr);
+ strcpy(cli_sockhost(new_client), cli_sock_ip(new_client));
+ memcpy(&cli_ip(new_client), &addr.addr, sizeof(cli_ip(new_client)));
if (next_target)
- new_client->nexttarget = next_target;
+ cli_nexttarget(new_client) = next_target;
- new_client->fd = fd;
- new_client->listener = listener;
+ cli_fd(new_client) = fd;
+ if (!socket_add(&(cli_socket(new_client)), client_sock_callback,
+ (void*) cli_connect(new_client), SS_CONNECTED, 0, fd)) {
+ ++ServerStats->is_ref;
+ write(fd, register_message, strlen(register_message));
+ close(fd);
+ cli_fd(new_client) = -1;
+ return;
+ }
+ cli_freeflag(new_client) |= FREEFLAG_SOCKET;
+ cli_listener(new_client) = listener;
++listener->ref_count;
Count_newunknown(UserStats);
- /* if we've made it this far we can put the client on the auth query pile */
- start_auth(new_client);
+
+ if(listener_ssl(listener)) {
+ struct Connection* con = cli_connect(new_client);
+ con->con_ssl = ssl_start_handshake_listener(listener->ssl_listener, fd, new_client, SSLData_Client);
+ unsigned int events = 0;
+ if(ssl_wantread(con->con_ssl))
+ events |= SOCK_EVENT_READABLE;
+ if(ssl_wantwrite(con->con_ssl))
+ events |= SOCK_EVENT_WRITABLE;
+ socket_events(&(cli_socket(new_client)), SOCK_ACTION_SET | events);
+ } else {
+ /* if we've made it this far we can put the client on the auth query pile */
+ start_auth(new_client);
+ }
}
+/** Determines whether to tell the events engine we're interested in
+ * writable events.
+ * @param cptr Client for which to decide this.
+ */
+void update_write(struct Client* cptr)
+{
+ /* If there are messages that need to be sent along, or if the client
+ * is in the middle of a /list, then we need to tell the engine that
+ * we're interested in writable events--otherwise, we need to drop
+ * that interest.
+ */
+ socket_events(&(cli_socket(cptr)),
+ ((MsgQLength(&cli_sendQ(cptr)) || cli_listing(cptr)) ?
+ SOCK_ACTION_ADD : SOCK_ACTION_DEL) | SOCK_EVENT_WRITABLE);
+}
-/*
- * read_packet
- *
- * 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
+/** 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(&cptr->recvQ) > CLIENT_FLOOD)) {
- switch (os_recv_nonb(cptr->fd, readbuf, sizeof(readbuf), &length)) {
+ if (socket_ready &&
+ !(IsUser(cptr) &&
+ DBufLength(&(cli_recvQ(cptr))) > feature_int(FEAT_CLIENT_FLOOD))) {
+
+ /* Handle SSL Sockets
+ */
+ int recvret;
+ if(cli_connect(cptr)->con_ssl) {
+ recvret = ssl_recv_decrypt(cli_connect(cptr)->con_ssl, readbuf, sizeof(readbuf), &length);
+ } else {
+ recvret = os_recv_nonb(cli_fd(cptr), readbuf, sizeof(readbuf), &length);
+ }
+ switch (recvret) {
case IO_SUCCESS:
- if (length) {
- cptr->lasttime = CurrentTime;
- if (cptr->lasttime > cptr->since)
- cptr->since = cptr->lasttime;
- cptr->flags &= ~(FLAGS_PINGSENT | FLAGS_NONL);
+ 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:
- cptr->error = errno;
- /* cptr->flags |= FLAGS_DEADSOCKET; */
+ 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)) {
+ if (length > 0 && IsServer(cptr))
return server_dopacket(cptr, readbuf, length);
- }
- else {
+ 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 && 0 == dbuf_put(&cptr->recvQ, readbuf, length)) {
+ if (length > 0 && dbuf_put(&(cli_recvQ(cptr)), readbuf, length) == 0)
return exit_client(cptr, cptr, &me, "dbuf_put fail");
- }
-#ifndef NOFLOODCONTROL
- /*
- * XXX - cptr will always be a user or unregistered
- */
- if (IsUser(cptr) && DBufLength(&cptr->recvQ) > CLIENT_FLOOD)
+
+ if (DBufLength(&(cli_recvQ(cptr))) > feature_int(FEAT_CLIENT_FLOOD))
return exit_client(cptr, cptr, &me, "Excess Flood");
- while (DBufLength(&cptr->recvQ) && !NoNewLine(cptr) &&
- (IsTrusted(cptr) || cptr->since - CurrentTime < 10))
-#else
- while (DBufLength(&cptr->recvQ) && !NoNewLine(cptr))
-#endif
+ while (DBufLength(&(cli_recvQ(cptr))) && !NoNewLine(cptr) &&
+ (IsTrusted(cptr) || cli_since(cptr) - CurrentTime < 10))
{
- /*
- * If it has become registered as a Server
- * then skip the per-message parsing below.
- */
- if (IsServer(cptr)) {
- dolen = dbuf_get(&cptr->recvQ, readbuf, sizeof(readbuf));
- return (dolen) ? server_dopacket(cptr, readbuf, dolen) : 1;
- }
- dolen = dbuf_getmsg(&cptr->recvQ, cptr->buffer, BUFSIZE);
+ 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
* deletes the rest of the buffer contents.
* -avalon
*/
- if (0 == dolen) {
- if (DBufLength(&cptr->recvQ) < 510)
- cptr->flags |= FLAGS_NONL;
+ if (dolen == 0)
+ {
+ if (DBufLength(&(cli_recvQ(cptr))) < 510)
+ SetFlag(cptr, FLAG_NONL);
else
- DBufClear(&cptr->recvQ);
- }
- else if (CPTR_KILLED == client_dopacket(cptr, dolen))
- return CPTR_KILLED;
- }
- }
- return 1;
-}
-
-static int on_write_unblocked(struct Client* cptr)
-{
- /*
- * ...room for writing, empty some queue then...
- */
- cptr->flags &= ~FLAGS_BLOCKED;
- if (IsConnecting(cptr)) {
- if (!completed_connection(cptr))
- return 0;
- }
- else if (cptr->listing && MsgQLength(&cptr->sendQ) < 2048)
- list_next_channels(cptr, 64);
- send_queued(cptr);
- return 1;
-}
-
-/*
- * Select / Poll Read Algorithm for ircd
- *
- * We need to check the file descriptors for all the different types
- * of things that use them, so check for reads on everything but connects
- * and writes on connects and descriptors that are blocked
- *
- * for each (client in local) {
- * if (not connecting)
- * check for read;
- * if (connecting or blocked)
- * check for write;
- * }
- * wait for activity;
- *
- * for each (client in local) {
- * if (there are descriptors to check) {
- * if (write activity)
- * send data;
- * if (read activity)
- * read data;
- * }
- * process data read;
- * }
- * Note we must always process data read whether or not there has been
- * read activity or file descriptors set, since data is buffered by the client.
- */
-
-
-#ifdef USE_POLL
-
-/*
- * poll macros
- */
-#if defined(POLLMSG) && defined(POLLIN) && defined(POLLRDNORM)
-# define POLLREADFLAGS (POLLMSG|POLLIN|POLLRDNORM)
-#else
-# if defined(POLLIN) && defined(POLLRDNORM)
-# define POLLREADFLAGS (POLLIN|POLLRDNORM)
-# else
-# if defined(POLLIN)
-# define POLLREADFLAGS POLLIN
-# else
-# if defined(POLLRDNORM)
-# define POLLREADFLAGS POLLRDNORM
-# endif
-# endif
-# endif
-#endif
-
-#if defined(POLLOUT) && defined(POLLWRNORM)
-#define POLLWRITEFLAGS (POLLOUT|POLLWRNORM)
-#else
-# if defined(POLLOUT)
-# define POLLWRITEFLAGS POLLOUT
-# else
-# if defined(POLLWRNORM)
-# define POLLWRITEFLAGS POLLWRNORM
-# endif
-# endif
-#endif
-
-#ifdef POLLHUP
-#define POLLERRORS (POLLHUP|POLLERR)
-#else
-#define POLLERRORS POLLERR
-#endif
-
-/*
- * NOTE: pfd and pfd_count are local variable names in read_message
- */
-#define PFD_SETR(xfd) \
- do { CHECK_ADD_PFD(xfd) pfd->events |= POLLREADFLAGS; } while(0)
-#define PFD_SETW(xfd) \
- do { CHECK_ADD_PFD(xfd) pfd->events |= POLLWRITEFLAGS; } while(0)
-
-#define CHECK_ADD_PFD(xfd) \
- if (pfd->fd != xfd) { \
- pfd = &poll_fds[pfd_count++]; \
- poll_fds[pfd_count].fd = -1; \
- pfd->fd = xfd; \
- pfd->events = 0; \
- }
-
-/*
- * Check all connections for new connections and input data that is to be
- * processed. Also check for connections with data queued and whether we can
- * write it out.
- *
- * Don't ever use ZERO for `delay', unless you mean to poll and then
- * you have to have sleep/wait somewhere else in the code.--msa
- */
-int read_message(time_t delay)
-{
- struct pollfd poll_fds[MAXCONNECTIONS + 1];
- struct Client* cptr;
- struct Listener* listener = 0;
- struct AuthRequest* auth = 0;
- struct AuthRequest* auth_next = 0;
- struct UPing* uping = 0;
- struct UPing* uping_next = 0;
- time_t delay2 = delay;
- int nfds;
- int length;
- int i;
- int res = 0;
- int pfd_count;
- struct pollfd* pfd;
- struct pollfd* res_pfd;
- struct pollfd* uping_pfd;
- int read_ready;
- int write_ready;
-
- unsigned int timeout;
-
- for ( ; ; ) {
- pfd_count = 0;
- pfd = poll_fds;
- res_pfd = 0;
- uping_pfd = 0;
- pfd->fd = -1;
-
- if (-1 < ResolverFileDescriptor) {
- PFD_SETR(ResolverFileDescriptor);
- res_pfd = pfd;
- }
- if (-1 < UPingFileDescriptor) {
- PFD_SETR(UPingFileDescriptor);
- uping_pfd = pfd;
- }
- /*
- * add uping descriptors
- */
- for (uping = uping_begin(); uping; uping = uping_next) {
- uping_next = uping->next;
- if (uping->active) {
- delay2 = 1;
- if (uping->lastsent && CurrentTime > uping->timeout) {
- uping_end(uping);
- continue;
+ {
+ /* More than 512 bytes in the line - drop the input and yell
+ * at the client.
+ */
+ DBufClear(&(cli_recvQ(cptr)));
+ send_reply(cptr, ERR_INPUTTOOLONG);
}
- uping->index = pfd_count;
- PFD_SETR(uping->fd);
}
- }
- /*
- * add auth file descriptors
- */
- for (auth = AuthPollList; auth; auth = auth->next) {
- assert(-1 < auth->fd);
- auth->index = pfd_count;
- if (IsAuthConnect(auth))
- PFD_SETW(auth->fd);
- else
- PFD_SETR(auth->fd);
- }
- /*
- * add listener file descriptors
- */
- for (listener = ListenerPollList; listener; listener = listener->next) {
- assert(-1 < listener->fd);
+ else if (client_dopacket(cptr, dolen) == CPTR_KILLED)
+ return CPTR_KILLED;
/*
- * pfd_count is incremented by PFD_SETR so we need to save the
- * index first
+ * If it has become registered as a Server
+ * then skip the per-message parsing below.
*/
- listener->index = pfd_count;
- PFD_SETR(listener->fd);
- }
-
- for (i = HighestFd; -1 < i; --i) {
- if ((cptr = LocalClientArray[i])) {
-
- if (DBufLength(&cptr->recvQ))
- delay2 = 1;
- if (DBufLength(&cptr->recvQ) < 4088 || IsServer(cptr)) {
- PFD_SETR(i);
- }
- if (MsgQLength(&cptr->sendQ) || IsConnecting(cptr) ||
- (cptr->listing && MsgQLength(&cptr->sendQ) < 2048)) {
- PFD_SETW(i);
+ 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)));
+ }
+ else if ((IsServer(cptr) &&
+ server_dopacket(cptr, readbuf, dolen) == CPTR_KILLED) ||
+ (!IsServer(cptr) &&
+ connect_dopacket(cptr, readbuf, dolen) == CPTR_KILLED))
+ return CPTR_KILLED;
}
}
}
- Debug((DEBUG_INFO, "poll: %d %d", delay, delay2));
-
- timeout = (IRCD_MIN(delay2, delay)) * 1000;
-
- nfds = poll(poll_fds, pfd_count, timeout);
-
- CurrentTime = time(0);
- if (-1 < nfds)
- break;
-
- if (EINTR == errno)
- return -1;
- report_error(POLL_ERROR_MSG, me.name, errno);
- ++res;
- if (res > 5)
- server_restart("too many poll errors");
- sleep(1);
- CurrentTime = time(0);
- }
-
- if (uping_pfd && (uping_pfd->revents & (POLLREADFLAGS | POLLERRORS))) {
- uping_echo();
- --nfds;
- }
- /*
- * check uping replies
- */
- for (uping = uping_begin(); uping; uping = uping_next) {
- uping_next = uping->next;
- if (uping->active) {
- assert(-1 < uping->index);
- if (poll_fds[uping->index].revents) {
- uping_read(uping);
- if (0 == --nfds)
- break;
- }
- else if (CurrentTime > uping->lastsent) {
- uping->lastsent = CurrentTime;
- uping_send(uping);
- }
- }
- }
-
- if (res_pfd && (res_pfd->revents & (POLLREADFLAGS | POLLERRORS))) {
- resolver_read();
- --nfds;
- }
- /*
- * check auth queries
- */
- for (auth = AuthPollList; auth; auth = auth_next) {
- auth_next = auth->next;
- i = auth->index;
- /*
- * check for any event, we only ask for one at a time
- */
- if (poll_fds[i].revents) {
- if (IsAuthConnect(auth))
- send_auth_query(auth);
- else
- read_auth_reply(auth);
- if (0 == --nfds)
- break;
- }
- }
- /*
- * check listeners
- */
- for (listener = ListenerPollList; listener; listener = listener->next) {
- i = listener->index;
- if (poll_fds[i].revents) {
- accept_connection(listener);
- if (0 == --nfds)
- break;
- }
- }
- /*
- * i contains the next non-auth/non-listener index, since we put the
- * resolver, auth and listener, file descriptors in poll_fds first,
- * the very next one should be the start of the clients
- */
- pfd = &poll_fds[++i];
-
- for ( ; (i < pfd_count); ++i, ++pfd) {
- if (!(cptr = LocalClientArray[pfd->fd]))
- continue;
- read_ready = write_ready = 0;
-
- if (0 < nfds && pfd->revents) {
- --nfds;
-
- read_ready = pfd->revents & POLLREADFLAGS;
- write_ready = pfd->revents & POLLWRITEFLAGS;
-
- if (pfd->revents & POLLERRORS) {
- if (pfd->events & POLLREADFLAGS)
- ++read_ready;
- if (pfd->events & POLLWRITEFLAGS)
- ++write_ready;
- }
- }
- if (write_ready) {
- if (!on_write_unblocked(cptr) || IsDead(cptr)) {
- const char* msg = (cptr->error) ? strerror(cptr->error) : cptr->info;
- if (!msg)
- msg = "Unknown error";
- exit_client(cptr, cptr, &me, msg);
- continue;
- }
- }
- length = 1; /* for fall through case */
- if ((!NoNewLine(cptr) || read_ready) && !IsDead(cptr)) {
- if (CPTR_KILLED == (length = read_packet(cptr, read_ready)))
- continue;
- }
-#if 0
- /* Bullshit, why would we want to flush sockets while using non-blocking?
- * This uses > 4% cpu! --Run */
- if (length > 0)
- flush_connections(poll_cptr[i]);
-#endif
- if (IsDead(cptr)) {
- const char* msg = (cptr->error) ? strerror(cptr->error) : cptr->info;
- if (!msg)
- msg = "Unknown error";
- exit_client(cptr, cptr, &me, (char*) msg);
- continue;
- }
- if (length > 0)
- continue;
- cptr->flags |= FLAGS_DEADSOCKET;
- /*
- * ...hmm, with non-blocking sockets we might get
- * here from quite valid reasons, although.. why
- * would select report "data available" when there
- * wasn't... So, this must be an error anyway... --msa
- * actually, EOF occurs when read() returns 0 and
- * in due course, select() returns that fd as ready
- * for reading even though it ends up being an EOF. -avalon
- */
- Debug((DEBUG_ERROR, "READ ERROR: fd = %d %d %d", pfd->fd, errno, length));
-
- if ((IsServer(cptr) || IsHandshake(cptr)) && cptr->error == 0 && length == 0)
- exit_client_msg(cptr, cptr, &me, "Server %s closed the connection (%s)",
- cptr->name, cptr->serv->last_error_msg);
- else {
- const char* msg = (cptr->error) ? strerror(cptr->error) : "EOF from client";
- if (!msg)
- msg = "Unknown error";
- exit_client_msg(cptr, cptr, &me, "Read error: %s", msg);
- }
- }
- return 0;
-}
-#else /* USE_SELECT */
-
-/*
- * Check all connections for new connections and input data that is to be
- * processed. Also check for connections with data queued and whether we can
- * write it out.
- *
- * Don't ever use ZERO for `delay', unless you mean to poll and then
- * you have to have sleep/wait somewhere else in the code.--msa
- */
-int read_message(time_t delay)
-{
- struct Client* cptr;
- struct Listener* listener;
- struct AuthRequest* auth = 0;
- struct AuthRequest* auth_next = 0;
- struct UPing* uping;
- struct UPing* uping_next;
- int nfds;
- struct timeval wait;
- time_t delay2 = delay;
- unsigned int usec = 0;
- int res = 0;
- int length;
- int i;
- int read_ready;
- fd_set read_set;
- fd_set write_set;
-
- for ( ; ; )
- {
- FD_ZERO(&read_set);
- FD_ZERO(&write_set);
-
- if (-1 < ResolverFileDescriptor)
- FD_SET(ResolverFileDescriptor, &read_set);
- if (-1 < UPingFileDescriptor)
- FD_SET(UPingFileDescriptor, &read_set);
- /*
- * set up uping file descriptors
- */
- for (uping = uping_begin(); uping; uping = uping_next) {
- uping_next = uping->next;
- if (uping->active) {
- delay2 = 1;
- if (uping->lastsent && CurrentTime > uping->timeout) {
- uping_end(uping);
- continue;
- }
- assert(-1 < uping->fd);
- FD_SET(uping->fd, &read_set);
- }
- }
- /*
- * set auth file descriptors
- */
- for (auth = AuthPollList; auth; auth = auth->next) {
- assert(-1 < auth->fd);
- if (IsAuthConnect(auth))
- FD_SET(auth->fd, &write_set);
- else /* if (IsAuthPending(auth)) */
- FD_SET(auth->fd, &read_set);
- }
- /*
- * set listener file descriptors
- */
- for (listener = ListenerPollList; listener; listener = listener->next) {
- assert(-1 < listener->fd);
- FD_SET(listener->fd, &read_set);
- }
-
- for (i = HighestFd; i > -1; --i) {
- if ((cptr = LocalClientArray[i])) {
- if (DBufLength(&cptr->recvQ))
- delay2 = 1;
- if (DBufLength(&cptr->recvQ) < 4088 || IsServer(cptr))
- FD_SET(i, &read_set);
- if (MsgQLength(&cptr->sendQ) || IsConnecting(cptr) ||
- (cptr->listing && MsgQLength(&cptr->sendQ) < 2048))
- FD_SET(i, &write_set);
- }
- }
-
- wait.tv_sec = IRCD_MIN(delay2, delay);
- wait.tv_usec = usec;
-
- Debug((DEBUG_INFO, "select: %d %d", delay, delay2));
-
- nfds = select(FD_SETSIZE, &read_set, &write_set, 0, &wait);
-
- CurrentTime = time(0);
-
- if (-1 < nfds)
- break;
-
- if (errno == EINTR)
- return -1;
- report_error(SELECT_ERROR_MSG, me.name, errno);
- if (++res > 5)
- server_restart("too many select errors");
- sleep(1);
- CurrentTime = time(0);
- }
-
- if (-1 < UPingFileDescriptor && FD_ISSET(UPingFileDescriptor, &read_set)) {
- uping_echo();
- --nfds;
- }
- for (uping = uping_begin(); uping; uping = uping_next) {
- uping_next = uping->next;
- if (uping->active) {
- assert(-1 < uping->fd);
- if (FD_ISSET(uping->fd, &read_set)) {
- uping_read(uping);
- if (0 == --nfds)
- break;
- }
- else if (CurrentTime > uping->lastsent) {
- uping->lastsent = CurrentTime;
- uping_send(uping);
- }
- }
- }
- if (-1 < ResolverFileDescriptor && FD_ISSET(ResolverFileDescriptor, &read_set)) {
- resolver_read();
- --nfds;
- }
- /*
- * Check fd sets for the auth fd's (if set and valid!) first
- * because these can not be processed using the normal loops below.
- * -avalon
- */
- for (auth = AuthPollList; auth; auth = auth_next) {
- auth_next = auth->next;
- assert(-1 < auth->fd);
- if (IsAuthConnect(auth) && FD_ISSET(auth->fd, &write_set)) {
- send_auth_query(auth);
- if (0 == --nfds)
- break;
- }
- else if (FD_ISSET(auth->fd, &read_set)) {
- read_auth_reply(auth);
- if (0 == --nfds)
- break;
- }
- }
- /*
- * next accept connections from active listeners
- */
- for (listener = ListenerPollList; listener; listener = listener->next) {
- assert(-1 < listener->fd);
- if (0 < nfds && FD_ISSET(listener->fd, &read_set))
- accept_connection(listener);
- }
-
- for (i = HighestFd; -1 < i; --i) {
- if (!(cptr = LocalClientArray[i]))
- continue;
- read_ready = 0;
- if (0 < nfds) {
- if (FD_ISSET(i, &write_set)) {
- --nfds;
- if (!on_write_unblocked(cptr) || IsDead(cptr)) {
- const char* msg = (cptr->error) ? strerror(cptr->error) : cptr->info;
- if (!msg)
- msg = "Unknown error";
- if (FD_ISSET(i, &read_set))
- --nfds;
- exit_client(cptr, cptr, &me, msg);
- continue;
- }
- }
- if ((read_ready = FD_ISSET(i, &read_set)))
- --nfds;
- }
- length = 1; /* for fall through case */
- if ((!NoNewLine(cptr) || read_ready) && !IsDead(cptr)) {
- if (CPTR_KILLED == (length = read_packet(cptr, read_ready)))
- continue;
- }
- if (IsDead(cptr)) {
- const char* msg = (cptr->error) ? strerror(cptr->error) : cptr->info;
- if (!msg)
- msg = "Unknown error";
- exit_client(cptr, cptr, &me, msg);
- continue;
- }
- if (length > 0)
- continue;
-
- /*
- * ...hmm, with non-blocking sockets we might get
- * here from quite valid reasons, although.. why
- * would select report "data available" when there
- * wasn't... So, this must be an error anyway... --msa
- * actually, EOF occurs when read() returns 0 and
- * in due course, select() returns that fd as ready
- * for reading even though it ends up being an EOF. -avalon
- */
- Debug((DEBUG_ERROR, "READ ERROR: fd = %d %d %d", i, cptr->error, length));
-
- if ((IsServer(cptr) || IsHandshake(cptr)) && cptr->error == 0 && length == 0)
- exit_client_msg(cptr, cptr, &me, "Server %s closed the connection (%s)",
- cptr->name, cptr->serv->last_error_msg);
- else {
- const char* msg = (cptr->error) ? strerror(cptr->error) : "EOF from client";
- if (!msg)
- msg = "Unknown error";
- exit_client_msg(cptr, cptr, &me, "Read error: %s", msg);
+ /* 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 0;
+ return 1;
}
-#endif /* USE_SELECT */
-
-/*
- * connect_server - start or complete a connection to another server
- * returns true (1) if successful, false (0) otherwise
- *
- * aconf must point to a valid C:line
- * m_connect calls this with a valid by client and a null reply
- * try_connections calls this with a null by client, and a null reply
- * connect_dns_callback call this with a null by client, and a valid reply
- *
- * XXX - if this comes from an m_connect message and a dns query needs to
- * be done, we loose the information about who started the connection and
- * it's considered an auto connect.
+/** 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 DNSReply* reply)
+int connect_server(struct ConfItem* aconf, struct Client* by)
{
struct Client* cptr = 0;
assert(0 != aconf);
return 0;
}
Debug((DEBUG_NOTICE, "Connect to %s[@%s]", aconf->name,
- ircd_ntoa((const char*) &aconf->ipnum)));
+ ircd_ntoa(&aconf->address.addr)));
if ((cptr = FindClient(aconf->name))) {
if (IsServer(cptr) || IsMe(cptr)) {
sendto_opmask_butone(0, SNO_OLDSNO, "Server %s already present from %s",
- aconf->name, cptr->from->name);
+ 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, cptr->from->name);
+ "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, cptr->name);
+ "progress", by, cli_name(cptr));
}
return 0;
}
}
/*
- * If we dont know the IP# for this host and itis a hostname and
+ * 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 (INADDR_NONE == aconf->ipnum.s_addr) {
+ if (!irc_in_addr_valid(&aconf->address.addr)
+ && !ircd_aton(&aconf->address.addr, aconf->host)) {
char buf[HOSTLEN + 1];
- assert(0 == reply);
- if (INADDR_NONE == (aconf->ipnum.s_addr = inet_addr(aconf->host))) {
- struct DNSQuery query;
- query.vptr = aconf;
- query.callback = connect_dns_callback;
- host_from_uh(buf, aconf->host, HOSTLEN);
- buf[HOSTLEN] = '\0';
-
- reply = gethost_byname(buf, &query);
-
- if (!reply) {
- aconf->dns_pending = 1;
- return 0;
- }
- memcpy(&aconf->ipnum, reply->hp->h_addr, sizeof(struct in_addr));
- }
+ 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);
- if (reply)
- ++reply->ref_count;
- cptr->dns_reply = reply;
/*
* Copy these in so we have something for error detection.
*/
- ircd_strncpy(cptr->name, aconf->name, HOSTLEN);
- ircd_strncpy(cptr->sockhost, aconf->host, HOSTLEN);
+ 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
*/
attach_confs_byhost(cptr, aconf->host, CONF_SERVER);
- if (!find_conf_byhost(cptr->confs, aconf->host, CONF_SERVER)) {
+ if (!find_conf_byhost(cli_confs(cptr), aconf->host, CONF_SERVER)) {
sendto_opmask_butone(0, SNO_OLDSNO, "Host %s is not enabled for "
- "connecting: no C-line", aconf->name);
+ "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 "
- "C-line", by, aconf->name);
+ "Connect block", by, aconf->name);
}
det_confs_butmask(cptr, 0);
free_client(cptr);
if (!connect_inet(aconf, cptr)) {
if (by && IsUser(by) && !MyUser(by)) {
sendcmdto_one(&me, CMD_NOTICE, by, "%C :Couldn't connect to %s", by,
- cptr->name);
+ cli_name(cptr));
}
det_confs_butmask(cptr, 0);
free_client(cptr);
*/
make_server(cptr);
if (by && IsUser(by)) {
- sprintf_irc(cptr->serv->by, "%s%s", NumNick(by));
- assert(0 == cptr->serv->user);
- cptr->serv->user = by->user;
- by->user->refcnt++;
+ 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 {
- *cptr->serv->by = '\0';
+ *(cli_serv(cptr))->by = '\0';
/* strcpy(cptr->serv->by, "Auto"); */
}
- cptr->serv->up = &me;
+ cli_serv(cptr)->up = &me;
SetConnecting(cptr);
- if (cptr->fd > HighestFd)
- HighestFd = cptr->fd;
+ if (cli_fd(cptr) > HighestFd)
+ HighestFd = cli_fd(cptr);
-
- LocalClientArray[cptr->fd] = cptr;
+ LocalClientArray[cli_fd(cptr)] = cptr;
Count_newunknown(UserStats);
/* Actually we lie, the connect hasn't succeeded yet, but we have a valid
*/
add_client_to_list(cptr);
hAddClient(cptr);
- nextping = CurrentTime;
+/* nextping = CurrentTime; */
- return 1;
+ return (s_state(&cli_socket(cptr)) == SS_CONNECTED) ?
+ completed_connection(cptr) : 1;
}
-/*
- * Setup local socket structure to use for binding to.
- */
-void set_virtual_host(struct in_addr addr)
-{
- memset(&VirtualHost, 0, sizeof(VirtualHost));
- VirtualHost.sin_family = AF_INET;
- VirtualHost.sin_addr.s_addr = addr.s_addr;
-}
-
-/*
- * Find the real hostname for the host running the server (or one which
+/** 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.
*/
const struct LocalConf* conf = conf_get_local();
assert(0 != conf);
- ircd_strncpy(me.name, conf->name, HOSTLEN);
+ 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);
+ break;
+
+ case ET_CONNECT: /* socket connection completed */
+ if(cli_connect(cptr)->con_ssl) {
+ ssl_start_handshake_connect(cli_connect(cptr)->con_ssl);
+ }
+ else 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_connect()
+ * 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));
+}
projects / ircu2.10.12-pk.git / blobdiff