along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net_socket.c,v 1.1.2.19 2002/09/09 19:39:59 guus Exp $
+ $Id: net_socket.c,v 1.1.2.23 2003/01/17 00:37:20 guus Exp $
*/
#include "config.h"
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
-#ifdef HAVE_NETINET_IN_SYSTM_H
- #include <netinet/in_systm.h>
-#endif
-#ifdef HAVE_NETINET_IP_H
- #include <netinet/ip.h>
-#endif
-#ifdef HAVE_NETINET_TCP_H
- #include <netinet/tcp.h>
-#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <net/if.h>
+#ifdef HAVE_NETINET_IN_SYSTM_H
+#include <netinet/in_systm.h>
+#endif
+#ifdef HAVE_NETINET_IP_H
+#include <netinet/ip.h>
+#endif
+#ifdef HAVE_NETINET_TCP_H
+#include <netinet/tcp.h>
+#endif
#include <utils.h>
#include <xalloc.h>
int setup_listen_socket(sockaddr_t *sa)
{
- int nfd, flags;
- char *addrstr;
- int option;
+ int nfd, flags;
+ char *addrstr;
+ int option;
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
- char *interface;
- struct ifreq ifr;
+ char *interface;
+ struct ifreq ifr;
#endif
- cp();
- nfd = socket(sa->sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
- if(nfd < 0)
- {
- syslog(LOG_ERR, _("Creating metasocket failed: %s"), strerror(errno));
- return -1;
- }
+ cp();
+
+ nfd = socket(sa->sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
+
+ if(nfd < 0) {
+ syslog(LOG_ERR, _("Creating metasocket failed: %s"), strerror(errno));
+ return -1;
+ }
+
+ flags = fcntl(nfd, F_GETFL);
- flags = fcntl(nfd, F_GETFL);
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
- {
- close(nfd);
- syslog(LOG_ERR, _("System call `%s' failed: %s"), "fcntl", strerror(errno));
- return -1;
- }
+ if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
+ close(nfd);
+ syslog(LOG_ERR, _("System call `%s' failed: %s"), "fcntl",
+ strerror(errno));
+ return -1;
+ }
- /* Optimize TCP settings */
+ /* Optimize TCP settings */
- option = 1;
- setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
+ option = 1;
+ setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
#if defined(SOL_TCP) && defined(TCP_NODELAY)
- setsockopt(nfd, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
+ setsockopt(nfd, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
#endif
#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
- option = IPTOS_LOWDELAY;
- setsockopt(nfd, SOL_IP, IP_TOS, &option, sizeof(option));
+ option = IPTOS_LOWDELAY;
+ setsockopt(nfd, SOL_IP, IP_TOS, &option, sizeof(option));
#endif
- if(get_config_string(lookup_config(config_tree, "BindToInterface"), &interface))
- {
+ if(get_config_string
+ (lookup_config(config_tree, "BindToInterface"), &interface)) {
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
- memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
- if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)))
- {
- close(nfd);
- syslog(LOG_ERR, _("Can't bind to interface %s: %s"), interface, strerror(errno));
- return -1;
- }
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
+
+ if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr))) {
+ close(nfd);
+ syslog(LOG_ERR, _("Can't bind to interface %s: %s"), interface,
+ strerror(errno));
+ return -1;
+ }
#else
- syslog(LOG_WARNING, _("BindToDevice not supported on this platform"));
+ syslog(LOG_WARNING, _("BindToInterface not supported on this platform"));
#endif
- }
-
- if(bind(nfd, &sa->sa, SALEN(sa->sa)))
- {
- close(nfd);
- addrstr = sockaddr2hostname(sa);
- syslog(LOG_ERR, _("Can't bind to %s/tcp: %s"), addrstr, strerror(errno));
- free(addrstr);
- return -1;
- }
-
- if(listen(nfd, 3))
- {
- close(nfd);
- syslog(LOG_ERR, _("System call `%s' failed: %s"), "listen", strerror(errno));
- return -1;
- }
- cp();
- return nfd;
+ }
+
+ if(bind(nfd, &sa->sa, SALEN(sa->sa))) {
+ close(nfd);
+ addrstr = sockaddr2hostname(sa);
+ syslog(LOG_ERR, _("Can't bind to %s/tcp: %s"), addrstr,
+ strerror(errno));
+ free(addrstr);
+ return -1;
+ }
+
+ if(listen(nfd, 3)) {
+ close(nfd);
+ syslog(LOG_ERR, _("System call `%s' failed: %s"), "listen",
+ strerror(errno));
+ return -1;
+ }
+
+ return nfd;
}
int setup_vpn_in_socket(sockaddr_t *sa)
{
- int nfd, flags;
- char *addrstr;
- int option;
+ int nfd, flags;
+ char *addrstr;
+ int option;
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
- char *interface;
- struct ifreq ifr;
+ char *interface;
+ struct ifreq ifr;
#endif
- cp();
- nfd = socket(sa->sa.sa_family, SOCK_DGRAM, IPPROTO_UDP);
-
- if(nfd < 0)
- {
- syslog(LOG_ERR, _("Creating UDP socket failed: %s"), strerror(errno));
- return -1;
- }
-
- flags = fcntl(nfd, F_GETFL);
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0)
- {
- close(nfd);
- syslog(LOG_ERR, _("System call `%s' failed: %s"), "fcntl", strerror(errno));
- return -1;
- }
-
- option = 1;
- setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
+
+ cp();
+
+ nfd = socket(sa->sa.sa_family, SOCK_DGRAM, IPPROTO_UDP);
+
+ if(nfd < 0) {
+ syslog(LOG_ERR, _("Creating UDP socket failed: %s"), strerror(errno));
+ return -1;
+ }
+
+ flags = fcntl(nfd, F_GETFL);
+ if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
+ close(nfd);
+ syslog(LOG_ERR, _("System call `%s' failed: %s"), "fcntl",
+ strerror(errno));
+ return -1;
+ }
+
+ option = 1;
+ setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
- if(get_config_string(lookup_config(config_tree, "BindToInterface"), &interface))
- {
- memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
- if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr)))
- {
- close(nfd);
- syslog(LOG_ERR, _("Can't bind to interface %s: %s"), interface, strerror(errno));
- return -1;
+ if(get_config_string
+ (lookup_config(config_tree, "BindToInterface"), &interface)) {
+ memset(&ifr, 0, sizeof(ifr));
+ strncpy(ifr.ifr_ifrn.ifrn_name, interface, IFNAMSIZ);
+
+ if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr))) {
+ close(nfd);
+ syslog(LOG_ERR, _("Can't bind to interface %s: %s"), interface,
+ strerror(errno));
+ return -1;
+ }
}
- }
#endif
- if(bind(nfd, &sa->sa, SALEN(sa->sa)))
- {
- close(nfd);
- addrstr = sockaddr2hostname(sa);
- syslog(LOG_ERR, _("Can't bind to %s/udp: %s"), addrstr, strerror(errno));
- free(addrstr);
- return -1;
- }
- cp();
- return nfd;
-}
+ if(bind(nfd, &sa->sa, SALEN(sa->sa))) {
+ close(nfd);
+ addrstr = sockaddr2hostname(sa);
+ syslog(LOG_ERR, _("Can't bind to %s/udp: %s"), addrstr,
+ strerror(errno));
+ free(addrstr);
+ return -1;
+ }
-void retry_outgoing(outgoing_t *outgoing)
-{
- event_t *event;
- cp();
- outgoing->timeout += 5;
- if(outgoing->timeout > maxtimeout)
- outgoing->timeout = maxtimeout;
-
- event = new_event();
- event->handler = (event_handler_t)setup_outgoing_connection;
- event->time = now + outgoing->timeout;
- event->data = outgoing;
- event_add(event);
-
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_NOTICE, _("Trying to re-establish outgoing connection in %d seconds"), outgoing->timeout);
- cp();
+ return nfd;
}
-int setup_outgoing_socket(connection_t *c)
+void retry_outgoing(outgoing_t *outgoing)
{
- int option;
- cp();
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_INFO, _("Trying to connect to %s (%s)"), c->name, c->hostname);
-
- c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
-
- if(c->socket == -1)
- {
- syslog(LOG_ERR, _("Creating socket for %s failed: %s"), c->hostname, strerror(errno));
- return -1;
- }
+ event_t *event;
- /* Optimize TCP settings */
-
-#if defined(SOL_TCP) && defined(TCP_NODELAY)
- option = 1;
- setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-#endif
+ cp();
-#if defined(SOL_IP) && defined(IP_TOS)
- option = IPTOS_LOWDELAY;
- setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
-#endif
+ outgoing->timeout += 5;
- /* Connect */
+ if(outgoing->timeout > maxtimeout)
+ outgoing->timeout = maxtimeout;
- if(connect(c->socket, &c->address.sa, SALEN(c->address.sa)) == -1)
- {
- close(c->socket);
- syslog(LOG_ERR, _("Error while connecting to %s (%s): %s"), c->name, c->hostname, strerror(errno));
- return -1;
- }
+ event = new_event();
+ event->handler = (event_handler_t) setup_outgoing_connection;
+ event->time = now + outgoing->timeout;
+ event->data = outgoing;
+ event_add(event);
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
- cp();
- return 0;
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_NOTICE,
+ _("Trying to re-establish outgoing connection in %d seconds"),
+ outgoing->timeout);
}
-
void finish_connecting(connection_t *c)
{
- cp();
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
+ cp();
+
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
- c->last_ping_time = now;
+ c->last_ping_time = now;
- send_id(c);
- cp();
+ send_id(c);
}
void do_outgoing_connection(connection_t *c)
{
- char *address, *port;
- int option, result, flags;
- cp();
-begin:
- if(!c->outgoing->ai)
- {
- if(!c->outgoing->cfg)
- {
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_ERR, _("Could not set up a meta connection to %s"), c->name);
- c->status.remove = 1;
- retry_outgoing(c->outgoing);
- return;
- }
-
- get_config_string(c->outgoing->cfg, &address);
-
- if(!get_config_string(lookup_config(c->config_tree, "Port"), &port))
- asprintf(&port, "655");
+ char *address, *port;
+ int option, result, flags;
- c->outgoing->ai = str2addrinfo(address, port, SOCK_STREAM);
- free(address);
- free(port);
+ cp();
- c->outgoing->aip = c->outgoing->ai;
- c->outgoing->cfg = lookup_config_next(c->config_tree, c->outgoing->cfg);
- }
+begin:
+ if(!c->outgoing->ai) {
+ if(!c->outgoing->cfg) {
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_ERR, _("Could not set up a meta connection to %s"),
+ c->name);
+ c->status.remove = 1;
+ retry_outgoing(c->outgoing);
+ return;
+ }
+
+ get_config_string(c->outgoing->cfg, &address);
+
+ if(!get_config_string(lookup_config(c->config_tree, "Port"), &port))
+ asprintf(&port, "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)
- {
- freeaddrinfo(c->outgoing->ai);
- c->outgoing->ai = NULL;
- goto begin;
- }
+ if(!c->outgoing->aip) {
+ 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;
+ 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);
+ if(c->hostname)
+ free(c->hostname);
- c->hostname = sockaddr2hostname(&c->address);
+ c->hostname = sockaddr2hostname(&c->address);
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_INFO, _("Trying to connect to %s (%s)"), c->name, c->hostname);
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_INFO, _("Trying to connect to %s (%s)"), c->name,
+ c->hostname);
- c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
+ c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
- if(c->socket == -1)
- {
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_ERR, _("Creating socket for %s failed: %s"), c->hostname, strerror(errno));
+ if(c->socket == -1) {
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_ERR, _("Creating socket for %s failed: %s"), c->hostname,
+ strerror(errno));
- goto begin;
- }
+ goto begin;
+ }
- /* Optimize TCP settings */
+ /* Optimize TCP settings */
#if defined(SOL_TCP) && defined(TCP_NODELAY)
- option = 1;
- setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
+ option = 1;
+ setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
#endif
#if defined(SOL_IP) && defined(IP_TOS)
- option = IPTOS_LOWDELAY;
- setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
+ option = IPTOS_LOWDELAY;
+ setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
#endif
- /* Non-blocking */
+ /* Non-blocking */
- flags = fcntl(c->socket, F_GETFL);
+ flags = fcntl(c->socket, F_GETFL);
- if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0)
- {
- syslog(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
- }
+ if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
+ syslog(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
+ }
- /* Connect */
+ /* Connect */
- result = connect(c->socket, &c->address.sa, SALEN(c->address.sa));
+ result = connect(c->socket, &c->address.sa, SALEN(c->address.sa));
- if(result == -1)
- {
- if(errno == EINPROGRESS)
- {
- c->status.connecting = 1;
- return;
- }
+ if(result == -1) {
+ if(errno == EINPROGRESS) {
+ c->status.connecting = 1;
+ return;
+ }
+
+ close(c->socket);
- close(c->socket);
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_ERR, _("%s: %s"), c->hostname, strerror(errno));
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_ERR, _("%s: %s"), c->hostname, strerror(errno));
+ goto begin;
+ }
- goto begin;
- }
+ finish_connecting(c);
- finish_connecting(c);
- return;
- cp();
+ return;
}
void setup_outgoing_connection(outgoing_t *outgoing)
{
- connection_t *c;
- node_t *n;
- cp();
- n = lookup_node(outgoing->name);
-
- if(n)
- if(n->connection)
- {
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(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)
- {
- syslog(LOG_ERR, _("No address specified for %s"), c->name);
- free_connection(c);
- free(outgoing->name);
- free(outgoing);
- return;
- }
-
- c->outgoing = outgoing;
- c->last_ping_time = now;
-
- connection_add(c);
-
- do_outgoing_connection(c);
+ connection_t *c;
+ node_t *n;
+
+ cp();
+
+ n = lookup_node(outgoing->name);
+
+ if(n)
+ if(n->connection) {
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(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) {
+ syslog(LOG_ERR, _("No address specified for %s"), c->name);
+ free_connection(c);
+ free(outgoing->name);
+ free(outgoing);
+ return;
+ }
+
+ c->outgoing = outgoing;
+ c->last_ping_time = now;
+
+ connection_add(c);
+
+ do_outgoing_connection(c);
}
/*
*/
int handle_new_meta_connection(int sock)
{
- connection_t *c;
- sockaddr_t sa;
- int fd, len = sizeof(sa);
- cp();
- fd = accept(sock, &sa.sa, &len);
-
- if(fd < 0)
- {
- syslog(LOG_ERR, _("Accepting a new connection failed: %s"), strerror(errno));
- return -1;
- }
-
- sockaddrunmap(&sa);
-
- c = new_connection();
- 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 = now;
-
- if(debug_lvl >= DEBUG_CONNECTIONS)
- syslog(LOG_NOTICE, _("Connection from %s"), c->hostname);
-
- connection_add(c);
-
- c->allow_request = ID;
- send_id(c);
- cp();
- return 0;
+ connection_t *c;
+ sockaddr_t sa;
+ int fd, len = sizeof(sa);
+
+ cp();
+
+ fd = accept(sock, &sa.sa, &len);
+
+ if(fd < 0) {
+ syslog(LOG_ERR, _("Accepting a new connection failed: %s"),
+ strerror(errno));
+ return -1;
+ }
+
+ sockaddrunmap(&sa);
+
+ c = new_connection();
+ 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 = now;
+
+ if(debug_lvl >= DEBUG_CONNECTIONS)
+ syslog(LOG_NOTICE, _("Connection from %s"), c->hostname);
+
+ connection_add(c);
+
+ c->allow_request = ID;
+ send_id(c);
+
+ return 0;
}
void try_outgoing_connections(void)
{
- static config_t *cfg = NULL;
- char *name;
- outgoing_t *outgoing;
- cp();
- for(cfg = lookup_config(config_tree, "ConnectTo"); cfg; cfg = lookup_config_next(config_tree, cfg))
- {
- get_config_string(cfg, &name);
-
- if(check_id(name))
- {
- syslog(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;
- setup_outgoing_connection(outgoing);
- }
+ static config_t *cfg = NULL;
+ char *name;
+ outgoing_t *outgoing;
+
+ cp();
+
+ for(cfg = lookup_config(config_tree, "ConnectTo"); cfg;
+ cfg = lookup_config_next(config_tree, cfg)) {
+ get_config_string(cfg, &name);
+
+ if(check_id(name)) {
+ syslog(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;
+ setup_outgoing_connection(outgoing);
+ }
}
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