static void main_preinit(void)
{
struct ip_addr *ips;
unsigned int ips_count;
const struct aggregator_settings *set;
void **sets;
int ret;
sets = master_service_settings_get_others(master_service);
set = sets[0];
if (set->replicator_port != 0) {
ret = net_gethostbyname(set->replicator_host, &ips, &ips_count);
if (ret != 0) {
i_fatal("replicator_host: gethostbyname(%s) failed: %s",
set->replicator_host, net_gethosterror(ret));
}
replicator = replicator_connection_create_inet(ips, ips_count,
set->replicator_port,
notify_connection_sync_callback);
} else {
replicator = replicator_connection_create_unix(set->replicator_host,
notify_connection_sync_callback);
}
}
int lmtp_client_connect_tcp(struct lmtp_client *client,
enum lmtp_client_protocol protocol,
const char *host, unsigned int port)
{
struct dns_lookup_settings dns_lookup_set;
struct ip_addr *ips;
unsigned int ips_count;
int ret;
client->input_state = LMTP_INPUT_STATE_GREET;
client->host = p_strdup(client->pool, host);
client->port = port;
client->protocol = protocol;
if (*host == '\0') {
i_error("lmtp client: host not given");
return -1;
}
memset(&dns_lookup_set, 0, sizeof(dns_lookup_set));
dns_lookup_set.dns_client_socket_path =
client->set.dns_client_socket_path;
dns_lookup_set.timeout_msecs = LMTP_CLIENT_DNS_LOOKUP_TIMEOUT_MSECS;
if (net_addr2ip(host, &client->ip) == 0) {
/* IP address */
} else if (dns_lookup_set.dns_client_socket_path == NULL) {
/* no dns-client, use blocking lookup */
ret = net_gethostbyname(host, &ips, &ips_count);
if (ret != 0) {
i_error("lmtp client: DNS lookup of %s failed: %s",
client->host, net_gethosterror(ret));
return -1;
}
client->ip = ips[0];
} else {
if (dns_lookup(host, &dns_lookup_set,
lmtp_client_dns_done, client,
&client->dns_lookup) < 0)
return -1;
client->running = TRUE;
return 0;
}
if (lmtp_client_connect(client) < 0)
return -1;
return 0;
}
/* nonblocking gethostbyname(), ip (IPADDR) + error (int, 0 = not error) is
written to pipe when found PID of the resolver child is returned */
int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe)
{
RESOLVED_IP_REC rec;
const char *errorstr;
#ifndef WIN32
int pid;
#endif
g_return_val_if_fail(addr != NULL, FALSE);
#ifndef WIN32
pid = fork();
if (pid > 0) {
/* parent */
pidwait_add(pid);
return pid;
}
if (pid != 0) {
/* failed! */
g_warning("net_connect_thread(): fork() failed! "
"Using blocking resolving");
}
#endif
/* child */
memset(&rec, 0, sizeof(rec));
rec.error = net_gethostbyname(addr, &rec.ip4, &rec.ip6);
if (rec.error == 0) {
errorstr = NULL;
} else {
errorstr = net_gethosterror(rec.error);
rec.errlen = errorstr == NULL ? 0 : strlen(errorstr)+1;
}
g_io_channel_write_block(pipe, &rec, sizeof(rec));
if (rec.errlen != 0)
g_io_channel_write_block(pipe, (void *) errorstr, rec.errlen);
#ifndef WIN32
if (pid == 0)
_exit(99);
#endif
/* we used blocking lookup */
return 0;
}
static int
doveadm_tcp_connect_port(const char *host, in_port_t port)
{
struct ip_addr *ips;
unsigned int ips_count;
int ret, fd;
ret = net_gethostbyname(host, &ips, &ips_count);
if (ret != 0) {
i_fatal("Lookup of host %s failed: %s",
host, net_gethosterror(ret));
}
fd = net_connect_ip_blocking(&ips[0], port, NULL);
if (fd == -1) {
i_fatal("connect(%s:%u) failed: %m",
net_ip2addr(&ips[0]), port);
}
return fd;
}
static void cmd_zlibconnect(int argc ATTR_UNUSED, char *argv[])
{
struct client client;
struct ip_addr *ips;
unsigned int ips_count;
in_port_t port = 143;
int fd, ret;
if (argv[1] == NULL ||
(argv[2] != NULL && net_str2port(argv[2], &port) < 0))
help(&doveadm_cmd_zlibconnect);
ret = net_gethostbyname(argv[1], &ips, &ips_count);
if (ret != 0) {
i_fatal("Host %s lookup failed: %s", argv[1],
net_gethosterror(ret));
}
if ((fd = net_connect_ip(&ips[0], port, NULL)) == -1)
i_fatal("connect(%s, %u) failed: %m", argv[1], port);
i_info("Connected to %s port %u. Ctrl-D starts compression",
net_ip2addr(&ips[0]), port);
memset(&client, 0, sizeof(client));
client.fd = fd;
client.input = i_stream_create_fd(fd, (size_t)-1);
client.output = o_stream_create_fd(fd, 0);
o_stream_set_no_error_handling(client.output, TRUE);
client.io_client = io_add(STDIN_FILENO, IO_READ, client_input, &client);
client.io_server = io_add(fd, IO_READ, server_input, &client);
master_service_run(master_service, NULL);
io_remove(&client.io_client);
io_remove(&client.io_server);
i_stream_unref(&client.input);
o_stream_unref(&client.output);
if (close(fd) < 0)
i_fatal("close() failed: %m");
}
/* nonblocking gethostbyname(), ip (IPADDR) + error (int, 0 = not error) is
written to pipe when found PID of the resolver child is returned */
int net_gethostbyname_nonblock(const char *addr, GIOChannel *pipe,
int reverse_lookup)
{
RESOLVED_IP_REC rec;
const char *errorstr;
int pid;
int len;
g_return_val_if_fail(addr != NULL, FALSE);
pid = fork();
if (pid > 0) {
/* parent */
pidwait_add(pid);
return pid;
}
if (pid != 0) {
/* failed! */
g_warning("net_connect_thread(): fork() failed! "
"Using blocking resolving");
}
/* child */
srand(time(NULL));
memset(&rec, 0, sizeof(rec));
rec.error = net_gethostbyname(addr, &rec.ip4, &rec.ip6);
if (rec.error == 0) {
errorstr = NULL;
if (reverse_lookup) {
/* reverse lookup the IP, ignore any error */
if (rec.ip4.family != 0)
net_gethostbyaddr(&rec.ip4, &rec.host4);
if (rec.ip6.family != 0)
net_gethostbyaddr(&rec.ip6, &rec.host6);
}
} else {
errorstr = net_gethosterror(rec.error);
rec.errlen = errorstr == NULL ? 0 : strlen(errorstr)+1;
}
g_io_channel_write_block(pipe, &rec, sizeof(rec));
if (rec.errlen != 0)
g_io_channel_write_block(pipe, (void *) errorstr, rec.errlen);
else {
if (rec.host4) {
len = strlen(rec.host4) + 1;
g_io_channel_write_block(pipe, (void *) &len,
sizeof(int));
g_io_channel_write_block(pipe, (void *) rec.host4,
len);
}
if (rec.host6) {
len = strlen(rec.host6) + 1;
g_io_channel_write_block(pipe, (void *) &len,
sizeof(int));
g_io_channel_write_block(pipe, (void *) rec.host6,
len);
}
}
if (pid == 0)
_exit(99);
/* we used blocking lookup */
return 0;
}
