19be9cf715
Conflicts: NEWS README configure.in lib/utils.c src/linux/device.c src/meta.c src/net.h src/net_setup.c src/net_socket.c src/protocol.c src/protocol_auth.c src/tincd.c
611 lines
16 KiB
C
611 lines
16 KiB
C
/*
|
|
net_socket.c -- Handle various kinds of sockets.
|
|
Copyright (C) 1998-2005 Ivo Timmermans,
|
|
2000-2012 Guus Sliepen <guus@tinc-vpn.org>
|
|
2006 Scott Lamb <slamb@slamb.org>
|
|
2009 Florian Forster <octo@verplant.org>
|
|
|
|
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.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "system.h"
|
|
|
|
#include "splay_tree.h"
|
|
#include "conf.h"
|
|
#include "connection.h"
|
|
#include "logger.h"
|
|
#include "meta.h"
|
|
#include "net.h"
|
|
#include "netutl.h"
|
|
#include "protocol.h"
|
|
#include "utils.h"
|
|
#include "xalloc.h"
|
|
|
|
/* Needed on Mac OS/X */
|
|
#ifndef SOL_TCP
|
|
#define SOL_TCP IPPROTO_TCP
|
|
#endif
|
|
|
|
int addressfamily = AF_UNSPEC;
|
|
int maxtimeout = 900;
|
|
int seconds_till_retry = 5;
|
|
int udp_rcvbuf = 0;
|
|
int udp_sndbuf = 0;
|
|
|
|
listen_socket_t listen_socket[MAXSOCKETS];
|
|
int listen_sockets;
|
|
list_t *outgoing_list = NULL;
|
|
|
|
/* Setup sockets */
|
|
|
|
static void configure_tcp(connection_t *c) {
|
|
int option;
|
|
|
|
#ifdef O_NONBLOCK
|
|
int flags = fcntl(c->socket, F_GETFL);
|
|
|
|
if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "fcntl for %s: %s", c->hostname, strerror(errno));
|
|
}
|
|
#elif defined(WIN32)
|
|
unsigned long arg = 1;
|
|
|
|
if(ioctlsocket(c->socket, FIONBIO, &arg) != 0) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "ioctlsocket for %s: %d", c->hostname, sockstrerror(sockerrno));
|
|
}
|
|
#endif
|
|
|
|
#if defined(SOL_TCP) && defined(TCP_NODELAY)
|
|
option = 1;
|
|
setsockopt(c->socket, SOL_TCP, TCP_NODELAY, (void *)&option, sizeof option);
|
|
#endif
|
|
|
|
#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
|
|
option = IPTOS_LOWDELAY;
|
|
setsockopt(c->socket, SOL_IP, IP_TOS, (void *)&option, sizeof option);
|
|
#endif
|
|
}
|
|
|
|
static bool bind_to_interface(int sd) {
|
|
char *iface;
|
|
|
|
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
|
|
struct ifreq ifr;
|
|
int status;
|
|
#endif /* defined(SOL_SOCKET) && defined(SO_BINDTODEVICE) */
|
|
|
|
if(!get_config_string (lookup_config (config_tree, "BindToInterface"), &iface))
|
|
return true;
|
|
|
|
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
|
|
memset(&ifr, 0, sizeof(ifr));
|
|
strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
|
|
ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
|
|
|
|
status = setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr));
|
|
if(status) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Can't bind to interface %s: %s", iface,
|
|
strerror(errno));
|
|
return false;
|
|
}
|
|
#else /* if !defined(SOL_SOCKET) || !defined(SO_BINDTODEVICE) */
|
|
logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "BindToInterface");
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
int setup_listen_socket(const sockaddr_t *sa) {
|
|
int nfd;
|
|
char *addrstr;
|
|
int option;
|
|
char *iface;
|
|
|
|
nfd = socket(sa->sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
|
|
|
|
if(nfd < 0) {
|
|
logger(DEBUG_STATUS, LOG_ERR, "Creating metasocket failed: %s", sockstrerror(sockerrno));
|
|
return -1;
|
|
}
|
|
|
|
#ifdef FD_CLOEXEC
|
|
fcntl(nfd, F_SETFD, FD_CLOEXEC);
|
|
#endif
|
|
|
|
/* Optimize TCP settings */
|
|
|
|
option = 1;
|
|
setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof option);
|
|
|
|
#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
|
|
if(sa->sa.sa_family == AF_INET6)
|
|
setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option);
|
|
#endif
|
|
|
|
if(get_config_string
|
|
(lookup_config(config_tree, "BindToInterface"), &iface)) {
|
|
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
|
|
struct ifreq ifr;
|
|
|
|
memset(&ifr, 0, sizeof ifr);
|
|
strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
|
|
|
|
if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof ifr)) {
|
|
closesocket(nfd);
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Can't bind to interface %s: %s", iface,
|
|
strerror(sockerrno));
|
|
return -1;
|
|
}
|
|
#else
|
|
logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "BindToInterface");
|
|
#endif
|
|
}
|
|
|
|
if(bind(nfd, &sa->sa, SALEN(sa->sa))) {
|
|
closesocket(nfd);
|
|
addrstr = sockaddr2hostname(sa);
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Can't bind to %s/tcp: %s", addrstr, sockstrerror(sockerrno));
|
|
free(addrstr);
|
|
return -1;
|
|
}
|
|
|
|
if(listen(nfd, 3)) {
|
|
closesocket(nfd);
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "listen", sockstrerror(sockerrno));
|
|
return -1;
|
|
}
|
|
|
|
return nfd;
|
|
}
|
|
|
|
int setup_vpn_in_socket(const sockaddr_t *sa) {
|
|
int nfd;
|
|
char *addrstr;
|
|
int option;
|
|
|
|
nfd = socket(sa->sa.sa_family, SOCK_DGRAM, IPPROTO_UDP);
|
|
|
|
if(nfd < 0) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Creating UDP socket failed: %s", sockstrerror(sockerrno));
|
|
return -1;
|
|
}
|
|
|
|
#ifdef FD_CLOEXEC
|
|
fcntl(nfd, F_SETFD, FD_CLOEXEC);
|
|
#endif
|
|
|
|
#ifdef O_NONBLOCK
|
|
{
|
|
int flags = fcntl(nfd, F_GETFL);
|
|
|
|
if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
|
|
closesocket(nfd);
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "fcntl",
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
#elif defined(WIN32)
|
|
{
|
|
unsigned long arg = 1;
|
|
if(ioctlsocket(nfd, FIONBIO, &arg) != 0) {
|
|
closesocket(nfd);
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Call to `%s' failed: %s", "ioctlsocket", sockstrerror(sockerrno));
|
|
return -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
option = 1;
|
|
setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, (void *)&option, sizeof option);
|
|
setsockopt(nfd, SOL_SOCKET, SO_BROADCAST, (void *)&option, sizeof option);
|
|
|
|
if(udp_rcvbuf && setsockopt(nfd, SOL_SOCKET, SO_RCVBUF, (void *)&udp_rcvbuf, sizeof(udp_rcvbuf)))
|
|
logger(DEBUG_ALWAYS, LOG_WARNING, "Can't set UDP SO_RCVBUF to %i: %s", udp_rcvbuf, strerror(errno));
|
|
|
|
if(udp_sndbuf && setsockopt(nfd, SOL_SOCKET, SO_SNDBUF, (void *)&udp_sndbuf, sizeof(udp_sndbuf)))
|
|
logger(DEBUG_ALWAYS, LOG_WARNING, "Can't set UDP SO_SNDBUF to %i: %s", udp_sndbuf, strerror(errno));
|
|
|
|
#if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
|
|
if(sa->sa.sa_family == AF_INET6)
|
|
setsockopt(nfd, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option);
|
|
#endif
|
|
|
|
#if defined(IP_DONTFRAG) && !defined(IP_DONTFRAGMENT)
|
|
#define IP_DONTFRAGMENT IP_DONTFRAG
|
|
#endif
|
|
|
|
#if defined(SOL_IP) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
|
|
if(myself->options & OPTION_PMTU_DISCOVERY) {
|
|
option = IP_PMTUDISC_DO;
|
|
setsockopt(nfd, SOL_IP, IP_MTU_DISCOVER, (void *)&option, sizeof(option));
|
|
}
|
|
#elif defined(IPPROTO_IP) && defined(IP_DONTFRAGMENT)
|
|
if(myself->options & OPTION_PMTU_DISCOVERY) {
|
|
option = 1;
|
|
setsockopt(nfd, IPPROTO_IP, IP_DONTFRAGMENT, (void *)&option, sizeof(option));
|
|
}
|
|
#else
|
|
#warning No way to disable IPv4 fragmentation
|
|
#endif
|
|
|
|
#if defined(SOL_IPV6) && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
|
|
if(myself->options & OPTION_PMTU_DISCOVERY) {
|
|
option = IPV6_PMTUDISC_DO;
|
|
setsockopt(nfd, SOL_IPV6, IPV6_MTU_DISCOVER, (void *)&option, sizeof(option));
|
|
}
|
|
#elif defined(IPPROTO_IPV6) && defined(IPV6_DONTFRAG)
|
|
if(myself->options & OPTION_PMTU_DISCOVERY) {
|
|
option = 1;
|
|
setsockopt(nfd, IPPROTO_IPV6, IPV6_DONTFRAG, (void *)&option, sizeof(option));
|
|
}
|
|
#else
|
|
#warning No way to disable IPv6 fragmentation
|
|
#endif
|
|
|
|
if (!bind_to_interface(nfd)) {
|
|
closesocket(nfd);
|
|
return -1;
|
|
}
|
|
|
|
if(bind(nfd, &sa->sa, SALEN(sa->sa))) {
|
|
closesocket(nfd);
|
|
addrstr = sockaddr2hostname(sa);
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Can't bind to %s/udp: %s", addrstr, sockstrerror(sockerrno));
|
|
free(addrstr);
|
|
return -1;
|
|
}
|
|
|
|
return nfd;
|
|
} /* int setup_vpn_in_socket */
|
|
|
|
static void retry_outgoing_handler(int fd, short events, void *data) {
|
|
setup_outgoing_connection(data);
|
|
}
|
|
|
|
void retry_outgoing(outgoing_t *outgoing) {
|
|
outgoing->timeout += 5;
|
|
|
|
if(outgoing->timeout > maxtimeout)
|
|
outgoing->timeout = maxtimeout;
|
|
|
|
timeout_set(&outgoing->ev, retry_outgoing_handler, outgoing);
|
|
event_add(&outgoing->ev, &(struct timeval){outgoing->timeout, 0});
|
|
|
|
logger(DEBUG_CONNECTIONS, LOG_NOTICE,
|
|
"Trying to re-establish outgoing connection in %d seconds",
|
|
outgoing->timeout);
|
|
}
|
|
|
|
void finish_connecting(connection_t *c) {
|
|
logger(DEBUG_CONNECTIONS, LOG_INFO, "Connected to %s (%s)", c->name, c->hostname);
|
|
|
|
if(proxytype != PROXY_EXEC)
|
|
configure_tcp(c);
|
|
|
|
c->last_ping_time = time(NULL);
|
|
c->status.connecting = false;
|
|
|
|
send_id(c);
|
|
}
|
|
|
|
static void do_outgoing_pipe(connection_t *c, char *command) {
|
|
#ifndef HAVE_MINGW
|
|
int fd[2];
|
|
|
|
if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Could not create socketpair: %s\n", strerror(errno));
|
|
return;
|
|
}
|
|
|
|
if(fork()) {
|
|
c->socket = fd[0];
|
|
close(fd[1]);
|
|
logger(DEBUG_CONNECTIONS, LOG_DEBUG, "Using proxy %s", command);
|
|
return;
|
|
}
|
|
|
|
close(0);
|
|
close(1);
|
|
close(fd[0]);
|
|
dup2(fd[1], 0);
|
|
dup2(fd[1], 1);
|
|
close(fd[1]);
|
|
|
|
// Other filedescriptors should be closed automatically by CLOEXEC
|
|
|
|
char *host = NULL;
|
|
char *port = NULL;
|
|
|
|
sockaddr2str(&c->address, &host, &port);
|
|
setenv("REMOTEADDRESS", host, true);
|
|
setenv("REMOTEPORT", port, true);
|
|
setenv("NODE", c->name, true);
|
|
setenv("NAME", myself->name, true);
|
|
if(netname)
|
|
setenv("NETNAME", netname, true);
|
|
|
|
int result = system(command);
|
|
if(result < 0)
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Could not execute %s: %s\n", command, strerror(errno));
|
|
else if(result)
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "%s exited with non-zero status %d", command, result);
|
|
exit(result);
|
|
#else
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Proxy type exec not supported on this platform!");
|
|
return;
|
|
#endif
|
|
}
|
|
|
|
bool do_outgoing_connection(connection_t *c) {
|
|
char *address, *port, *space;
|
|
struct addrinfo *proxyai = NULL;
|
|
int result;
|
|
|
|
if(!c->outgoing) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "do_outgoing_connection() for %s called without c->outgoing", c->name);
|
|
abort();
|
|
}
|
|
|
|
begin:
|
|
if(!c->outgoing->ai) {
|
|
if(!c->outgoing->cfg) {
|
|
logger(DEBUG_CONNECTIONS, LOG_ERR, "Could not set up a meta connection to %s",
|
|
c->name);
|
|
retry_outgoing(c->outgoing);
|
|
c->outgoing = NULL;
|
|
connection_del(c);
|
|
return false;
|
|
}
|
|
|
|
get_config_string(c->outgoing->cfg, &address);
|
|
|
|
space = strchr(address, ' ');
|
|
if(space) {
|
|
port = xstrdup(space + 1);
|
|
*space = 0;
|
|
} else {
|
|
if(!get_config_string(lookup_config(c->config_tree, "Port"), &port))
|
|
port = xstrdup("655");
|
|
}
|
|
|
|
c->outgoing->ai = str2addrinfo(address, port, SOCK_STREAM);
|
|
free(address);
|
|
free(port);
|
|
|
|
c->outgoing->aip = c->outgoing->ai;
|
|
c->outgoing->cfg = lookup_config_next(c->config_tree, c->outgoing->cfg);
|
|
}
|
|
|
|
if(!c->outgoing->aip) {
|
|
if(c->outgoing->ai)
|
|
freeaddrinfo(c->outgoing->ai);
|
|
c->outgoing->ai = NULL;
|
|
goto begin;
|
|
}
|
|
|
|
memcpy(&c->address, c->outgoing->aip->ai_addr, c->outgoing->aip->ai_addrlen);
|
|
c->outgoing->aip = c->outgoing->aip->ai_next;
|
|
|
|
if(c->hostname)
|
|
free(c->hostname);
|
|
|
|
c->hostname = sockaddr2hostname(&c->address);
|
|
|
|
logger(DEBUG_CONNECTIONS, LOG_INFO, "Trying to connect to %s (%s)", c->name,
|
|
c->hostname);
|
|
|
|
if(!proxytype) {
|
|
c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
|
|
configure_tcp(c);
|
|
} else if(proxytype == PROXY_EXEC) {
|
|
do_outgoing_pipe(c, proxyhost);
|
|
} else {
|
|
proxyai = str2addrinfo(proxyhost, proxyport, SOCK_STREAM);
|
|
if(!proxyai)
|
|
goto begin;
|
|
logger(DEBUG_CONNECTIONS, LOG_INFO, "Using proxy at %s port %s", proxyhost, proxyport);
|
|
c->socket = socket(proxyai->ai_family, SOCK_STREAM, IPPROTO_TCP);
|
|
}
|
|
|
|
if(c->socket == -1) {
|
|
logger(DEBUG_CONNECTIONS, LOG_ERR, "Creating socket for %s failed: %s", c->hostname, sockstrerror(sockerrno));
|
|
goto begin;
|
|
}
|
|
|
|
#ifdef FD_CLOEXEC
|
|
fcntl(c->socket, F_SETFD, FD_CLOEXEC);
|
|
#endif
|
|
|
|
if(proxytype != PROXY_EXEC) {
|
|
#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
|
|
int option = 1;
|
|
if(c->address.sa.sa_family == AF_INET6)
|
|
setsockopt(c->socket, SOL_IPV6, IPV6_V6ONLY, (void *)&option, sizeof option);
|
|
#endif
|
|
|
|
bind_to_interface(c->socket);
|
|
}
|
|
|
|
/* Connect */
|
|
|
|
if(!proxytype) {
|
|
result = connect(c->socket, &c->address.sa, SALEN(c->address.sa));
|
|
} else if(proxytype == PROXY_EXEC) {
|
|
result = 0;
|
|
} else {
|
|
result = connect(c->socket, proxyai->ai_addr, proxyai->ai_addrlen);
|
|
freeaddrinfo(proxyai);
|
|
}
|
|
|
|
if(result == -1) {
|
|
if(sockinprogress(sockerrno)) {
|
|
c->status.connecting = true;
|
|
return true;
|
|
}
|
|
|
|
closesocket(c->socket);
|
|
|
|
logger(DEBUG_CONNECTIONS, LOG_ERR, "%s: %s", c->hostname, sockstrerror(sockerrno));
|
|
|
|
goto begin;
|
|
}
|
|
|
|
finish_connecting(c);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void handle_meta_write(int sock, short events, void *data) {
|
|
connection_t *c = data;
|
|
|
|
ssize_t outlen = send(c->socket, c->outbuf.data + c->outbuf.offset, c->outbuf.len - c->outbuf.offset, 0);
|
|
if(outlen <= 0) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Onoes, outlen = %d (%s)", (int)outlen, strerror(errno));
|
|
terminate_connection(c, c->status.active);
|
|
return;
|
|
}
|
|
|
|
buffer_read(&c->outbuf, outlen);
|
|
if(!c->outbuf.len && event_initialized(&c->outevent))
|
|
event_del(&c->outevent);
|
|
}
|
|
|
|
void setup_outgoing_connection(outgoing_t *outgoing) {
|
|
connection_t *c;
|
|
node_t *n;
|
|
|
|
if(event_initialized(&outgoing->ev))
|
|
event_del(&outgoing->ev);
|
|
|
|
n = lookup_node(outgoing->name);
|
|
|
|
if(n)
|
|
if(n->connection) {
|
|
logger(DEBUG_CONNECTIONS, LOG_INFO, "Already connected to %s", outgoing->name);
|
|
|
|
n->connection->outgoing = outgoing;
|
|
return;
|
|
}
|
|
|
|
c = new_connection();
|
|
c->name = xstrdup(outgoing->name);
|
|
c->outcipher = myself->connection->outcipher;
|
|
c->outdigest = myself->connection->outdigest;
|
|
c->outmaclength = myself->connection->outmaclength;
|
|
c->outcompression = myself->connection->outcompression;
|
|
|
|
init_configuration(&c->config_tree);
|
|
read_connection_config(c);
|
|
|
|
outgoing->cfg = lookup_config(c->config_tree, "Address");
|
|
|
|
if(!outgoing->cfg) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "No address specified for %s", c->name);
|
|
free_connection(c);
|
|
return;
|
|
}
|
|
|
|
c->outgoing = outgoing;
|
|
c->last_ping_time = time(NULL);
|
|
|
|
connection_add(c);
|
|
|
|
if (do_outgoing_connection(c)) {
|
|
event_set(&c->inevent, c->socket, EV_READ | EV_PERSIST, handle_meta_connection_data, c);
|
|
event_set(&c->outevent, c->socket, EV_WRITE | EV_PERSIST, handle_meta_write, c);
|
|
event_add(&c->inevent, NULL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
accept a new tcp connect and create a
|
|
new connection
|
|
*/
|
|
void handle_new_meta_connection(int sock, short events, void *data) {
|
|
connection_t *c;
|
|
sockaddr_t sa;
|
|
int fd;
|
|
socklen_t len = sizeof sa;
|
|
|
|
fd = accept(sock, &sa.sa, &len);
|
|
|
|
if(fd < 0) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR, "Accepting a new connection failed: %s", sockstrerror(sockerrno));
|
|
return;
|
|
}
|
|
|
|
sockaddrunmap(&sa);
|
|
|
|
c = new_connection();
|
|
c->name = xstrdup("<unknown>");
|
|
c->outcipher = myself->connection->outcipher;
|
|
c->outdigest = myself->connection->outdigest;
|
|
c->outmaclength = myself->connection->outmaclength;
|
|
c->outcompression = myself->connection->outcompression;
|
|
|
|
c->address = sa;
|
|
c->hostname = sockaddr2hostname(&sa);
|
|
c->socket = fd;
|
|
c->last_ping_time = time(NULL);
|
|
|
|
logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Connection from %s", c->hostname);
|
|
|
|
event_set(&c->inevent, c->socket, EV_READ | EV_PERSIST, handle_meta_connection_data, c);
|
|
event_set(&c->outevent, c->socket, EV_WRITE | EV_PERSIST, handle_meta_write, c);
|
|
event_add(&c->inevent, NULL);
|
|
|
|
configure_tcp(c);
|
|
|
|
connection_add(c);
|
|
|
|
c->allow_request = ID;
|
|
send_id(c);
|
|
}
|
|
|
|
static void free_outgoing(outgoing_t *outgoing) {
|
|
if(outgoing->ai)
|
|
freeaddrinfo(outgoing->ai);
|
|
|
|
if(outgoing->name)
|
|
free(outgoing->name);
|
|
|
|
free(outgoing);
|
|
}
|
|
|
|
void try_outgoing_connections(void) {
|
|
static config_t *cfg = NULL;
|
|
char *name;
|
|
outgoing_t *outgoing;
|
|
|
|
outgoing_list = list_alloc((list_action_t)free_outgoing);
|
|
|
|
for(cfg = lookup_config(config_tree, "ConnectTo"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
|
|
get_config_string(cfg, &name);
|
|
|
|
if(!check_id(name)) {
|
|
logger(DEBUG_ALWAYS, LOG_ERR,
|
|
"Invalid name for outgoing connection in %s line %d",
|
|
cfg->file, cfg->line);
|
|
free(name);
|
|
continue;
|
|
}
|
|
|
|
outgoing = xmalloc_and_zero(sizeof *outgoing);
|
|
outgoing->name = name;
|
|
list_insert_tail(outgoing_list, outgoing);
|
|
setup_outgoing_connection(outgoing);
|
|
}
|
|
}
|