ip_pkt.src_ip = my_ip->s_addr;
ip_pkt.dst_ip = dummy.s_addr;
ip_pkt.checksum =
- htons (calc_checksum ((uint16_t *) & ip_pkt, sizeof (struct ip_header)));
- memcpy (&packet[off], &ip_pkt, sizeof (struct ip_header));
+ htons (calc_checksum ((uint16_t *) & ip_pkt,
+ sizeof (struct ip_header)));
+ memcpy (&packet[off],
+ &ip_pkt,
+ sizeof (struct ip_header));
off += sizeof (struct ip_header);
icmp_echo.type = ICMP_ECHO;
icmp_echo.checksum = 0;
icmp_echo.reserved = 0;
icmp_echo.checksum =
- htons (calc_checksum
- ((uint16_t *) & icmp_echo, sizeof (struct icmp_echo_header)));
- memcpy (&packet[off], &icmp_echo, sizeof (struct icmp_echo_header));
+ htons (calc_checksum
+ ((uint16_t *) & icmp_echo,
+ sizeof (struct icmp_echo_header)));
+ memcpy (&packet[off],
+ &icmp_echo,
+ sizeof (struct icmp_echo_header));
off += sizeof (struct icmp_echo_header);
memset (&dst, 0, sizeof (dst));
dst.sin_len = sizeof (struct sockaddr_in);
#endif
dst.sin_addr = dummy;
- err =
- sendto (rawsock, packet, off, 0, (struct sockaddr *) &dst, sizeof (dst));
+ err = sendto (rawsock,
+ packet,
+ off,
+ 0,
+ (struct sockaddr *) &dst,
+ sizeof (dst));
if (err < 0)
{
#if VERBOSE
- fprintf (stderr, "sendto failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "sendto failed: %s\n",
+ strerror (errno));
#endif
}
else if (sizeof (packet) != err)
{
- fprintf (stderr, "Error: partial send of ICMP message\n");
+ fprintf (stderr,
+ "Error: partial send of ICMP message\n");
}
}
#endif
dst.sin_addr = dummy;
dst.sin_port = htons (NAT_TRAV_PORT);
- err = sendto (udpsock, NULL, 0, 0, (struct sockaddr *) &dst, sizeof (dst));
+ err = sendto (udpsock,
+ NULL,
+ 0,
+ 0,
+ (struct sockaddr *) &dst,
+ sizeof (dst));
if (err < 0)
{
#if VERBOSE
- fprintf (stderr, "sendto failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "sendto failed: %s\n",
+ strerror (errno));
#endif
}
else if (0 != err)
{
- fprintf (stderr, "Error: partial send of ICMP message\n");
+ fprintf (stderr,
+ "Error: partial send of ICMP message\n");
}
}
have = read (icmpsock, buf, sizeof (buf));
if (-1 == have)
{
- fprintf (stderr, "Error reading raw socket: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Error reading raw socket: %s\n",
+ strerror (errno));
return;
}
#if VERBOSE
- fprintf (stderr, "Received message of %u bytes\n", (unsigned int) have);
+ fprintf (stderr,
+ "Received message of %u bytes\n",
+ (unsigned int) have);
#endif
if (have <
(ssize_t) (sizeof (struct ip_header) +
const int one = 1;
if (-1 ==
- setsockopt (rawsock, SOL_SOCKET, SO_BROADCAST, (char *) &one, sizeof (one)))
+ setsockopt (rawsock,
+ SOL_SOCKET,
+ SO_BROADCAST,
+ (char *) &one,
+ sizeof (one)))
{
- fprintf (stderr, "setsockopt failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "setsockopt failed: %s\n",
+ strerror (errno));
return -1;
}
if (-1 ==
- setsockopt (rawsock, IPPROTO_IP, IP_HDRINCL, (char *) &one, sizeof (one)))
+ setsockopt (rawsock,
+ IPPROTO_IP,
+ IP_HDRINCL,
+ (char *) &one,
+ sizeof (one)))
{
- fprintf (stderr, "setsockopt failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "setsockopt failed: %s\n",
+ strerror (errno));
return -1;
}
return 0;
int
-main (int argc, char *const *argv)
+main (int argc,
+ char *const *argv)
{
struct in_addr external;
fd_set rs;
int global_ret;
/* Create an ICMP raw socket for reading (we'll check errors later) */
- icmpsock = socket (AF_INET, SOCK_RAW, IPPROTO_ICMP);
+ icmpsock = socket (AF_INET,
+ SOCK_RAW,
+ IPPROTO_ICMP);
icmp_eno = errno;
/* Create an (ICMP) raw socket for writing (we'll check errors later) */
- rawsock = socket (AF_INET, SOCK_RAW, IPPROTO_RAW);
+ rawsock = socket (AF_INET,
+ SOCK_RAW,
+ IPPROTO_RAW);
raw_eno = errno;
udpsock = -1;
#ifdef HAVE_SETRESUID
if (0 != setresuid (uid, uid, uid))
{
- fprintf (stderr, "Failed to setresuid: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Failed to setresuid: %s\n",
+ strerror (errno));
global_ret = 1;
goto error_exit;
}
#else
if (0 != (setuid (uid) | seteuid (uid)))
{
- fprintf (stderr, "Failed to setuid: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Failed to setuid: %s\n",
+ strerror (errno));
global_ret = 2;
goto error_exit;
}
}
if (1 != inet_pton (AF_INET, argv[1], &external))
{
- fprintf (stderr, "Error parsing IPv4 address: %s\n", strerror (errno));
+ fprintf (stderr,
+ "Error parsing IPv4 address: %s\n",
+ strerror (errno));
global_ret = 4;
goto error_exit;
}
if (1 != inet_pton (AF_INET, DUMMY_IP, &dummy))
{
- fprintf (stderr, "Internal error converting dummy IP to binary.\n");
+ fprintf (stderr,
+ "Internal error converting dummy IP to binary.\n");
global_ret = 5;
goto error_exit;
}
/* error checking icmpsock */
if (-1 == icmpsock)
{
- fprintf (stderr, "Error opening RAW socket: %s\n", strerror (icmp_eno));
+ fprintf (stderr,
+ "Error opening RAW socket: %s\n",
+ strerror (icmp_eno));
global_ret = 6;
goto error_exit;
}
{
/* this could happen if we were started with a large number of already-open
file descriptors... */
- fprintf (stderr, "Socket number too large (%d > %u)\n", icmpsock,
+ fprintf (stderr,
+ "Socket number too large (%d > %u)\n",
+ icmpsock,
(unsigned int) FD_SETSIZE);
global_ret = 7;
goto error_exit;
/* error checking rawsock */
if (-1 == rawsock)
{
- fprintf (stderr, "Error opening RAW socket: %s\n", strerror (raw_eno));
+ fprintf (stderr,
+ "Error opening RAW socket: %s\n",
+ strerror (raw_eno));
global_ret = 8;
goto error_exit;
}
{
if (errno == EINTR)
continue;
- fprintf (stderr, "select failed: %s\n", strerror (errno));
+ fprintf (stderr,
+ "select failed: %s\n",
+ strerror (errno));
break;
}
if (1 == getppid ()) /* Check the parent process id, if 1 the parent has died, so we should die too */
static struct in_addr mini_external_ipv4;
+/**
+ * Remove and free an entry from the #lal_head DLL.
+ *
+ * @param lal entry to free
+ */
+static void
+free_lal (struct LocalAddressList *lal)
+{
+ GNUNET_CONTAINER_DLL_remove (lal_head,
+ lal_tail,
+ lal);
+ if (NULL != lal->hc)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_MESSAGE,
+ "Lost NATed local address %s, stopping NAT server\n",
+ GNUNET_a2s ((const struct sockaddr *) &lal->addr,
+ sizeof (struct sockaddr_in)));
+
+ GN_stop_gnunet_nat_server_ (lal->hc);
+ lal->hc = NULL;
+ }
+ GNUNET_free (lal);
+}
+
+
/**
* Free the DLL starting at #lal_head.
*/
struct LocalAddressList *lal;
while (NULL != (lal = lal_head))
- {
- GNUNET_CONTAINER_DLL_remove (lal_head,
- lal_tail,
- lal);
- if (NULL != lal->hc)
- {
- GN_stop_gnunet_nat_server_ (lal->hc);
- lal->hc = NULL;
- }
- GNUNET_free (lal);
- }
+ free_lal (lal);
}
struct IfcProcContext ifc_ctx;
int found;
int have_nat;
+ struct LocalAddressList *lnext;
scan_task = GNUNET_SCHEDULER_add_delayed (SCAN_FREQ,
&run_scan,
/* remove addresses that disappeared */
for (struct LocalAddressList *lal = lal_head;
NULL != lal;
- lal = lal->next)
+ lal = lnext)
{
+ lnext = lal->next;
found = GNUNET_NO;
for (struct LocalAddressList *pos = ifc_ctx.lal_head;
NULL != pos;
: sizeof (struct sockaddr_in6))) )
{
found = GNUNET_YES;
- pos->hc = lal->hc;
- lal->hc = NULL;
}
}
if (GNUNET_NO == found)
+ {
notify_clients (lal,
GNUNET_NO);
+ free_lal (lal);
+ }
}
/* add addresses that appeared */
have_nat = GNUNET_NO;
for (struct LocalAddressList *pos = ifc_ctx.lal_head;
NULL != pos;
- pos = pos->next)
+ pos = ifc_ctx.lal_head)
{
found = GNUNET_NO;
if (GNUNET_NAT_AC_LAN == (GNUNET_NAT_AC_LAN & pos->ac))
: sizeof (struct sockaddr_in6))) )
found = GNUNET_YES;
}
- if (GNUNET_NO == found)
+ GNUNET_CONTAINER_DLL_remove (ifc_ctx.lal_head,
+ ifc_ctx.lal_tail,
+ pos);
+ if (GNUNET_YES == found)
+ {
+ GNUNET_free (pos);
+ }
+ else
+ {
notify_clients (pos,
GNUNET_YES);
- if ( (AF_INET == pos->af) &&
- (NULL == pos->hc) &&
- (0 != (GNUNET_NAT_AC_LAN & pos->ac)) )
- {
- const struct sockaddr_in *s4
- = (const struct sockaddr_in *) &pos->addr;
-
- pos->hc = GN_start_gnunet_nat_server_ (&s4->sin_addr,
- &reversal_callback,
- pos);
+ GNUNET_CONTAINER_DLL_insert (lal_head,
+ lal_tail,
+ pos);
+ if ( (AF_INET == pos->af) &&
+ (NULL == pos->hc) &&
+ (0 != (GNUNET_NAT_AC_LAN & pos->ac)) )
+ {
+ const struct sockaddr_in *s4
+ = (const struct sockaddr_in *) &pos->addr;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_MESSAGE,
+ "Found NATed local address %s, starting NAT server\n",
+ GNUNET_a2s ((void *) &pos->addr, sizeof (*s4)));
+ pos->hc = GN_start_gnunet_nat_server_ (&s4->sin_addr,
+ &reversal_callback,
+ pos);
+ }
}
}
if ( (GNUNET_YES == have_nat) &&
probe_external_ip_op = NULL;
}
}
-
- destroy_lal ();
- lal_head = ifc_ctx.lal_head;
- lal_tail = ifc_ctx.lal_tail;
}
#include "gnunet_util_lib.h"
#include "gnunet-service-nat_helper.h"
-#define LOG(kind,...) GNUNET_log_from (kind, "nat", __VA_ARGS__)
/**
* Information we keep per NAT helper process.
sizeof (mybuf));
if (bytes < 1)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Finished reading from server stdout with code: %d\n",
- bytes);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Finished reading from server stdout with code: %d\n",
+ bytes);
if (0 != GNUNET_OS_process_kill (h->server_proc,
-- GNUNET_TERM_SIG))
+ GNUNET_TERM_SIG))
GNUNET_log_from_strerror (GNUNET_ERROR_TYPE_WARNING,
"nat",
"kill");
&sin_addr.sin_addr)))
{
/* should we restart gnunet-helper-nat-server? */
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "nat",
- _("gnunet-helper-nat-server generated malformed address `%s'\n"),
- mybuf);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("gnunet-helper-nat-server generated malformed address `%s'\n"),
+ mybuf);
h->server_read_task
= GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
h->server_stdout_handle,
return;
}
sin_addr.sin_port = htons ((uint16_t) port);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "gnunet-helper-nat-server read: %s:%d\n",
- mybuf,
- port);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "gnunet-helper-nat-server read: %s:%d\n",
+ mybuf,
+ port);
h->cb (h->cb_cls,
&sin_addr);
h->server_read_task
&h->internal_address,
ia,
sizeof (ia)));
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Starting `%s' at `%s'\n",
- "gnunet-helper-nat-server",
- ia);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting `%s' at `%s'\n",
+ "gnunet-helper-nat-server",
+ ia);
/* Start the server process */
binary
= GNUNET_OS_get_libexec_binary_path ("gnunet-helper-nat-server");
GNUNET_free (binary);
if (NULL == h->server_proc)
{
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "nat",
- _("Failed to start %s\n"),
- "gnunet-helper-nat-server");
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to start %s\n"),
+ "gnunet-helper-nat-server");
GNUNET_DISK_pipe_close (h->server_stdout);
h->server_stdout = NULL;
try_again (h);
h->cb = cb;
h->cb_cls = cb_cls;
h->internal_address = *internal_address;
+ restart_nat_server (h);
if (NULL == h->server_stdout)
{
GN_stop_gnunet_nat_server_ (h);
{
if (0 != GNUNET_OS_process_kill (h->server_proc,
GNUNET_TERM_SIG))
- GNUNET_log_from_strerror (GNUNET_ERROR_TYPE_WARNING,
- "nat",
- "kill");
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING,
+ "kill");
GNUNET_OS_process_wait (h->server_proc);
GNUNET_OS_process_destroy (h->server_proc);
h->server_proc = NULL;
intv4,
INET_ADDRSTRLEN))
{
- GNUNET_log_from_strerror (GNUNET_ERROR_TYPE_WARNING,
- "nat",
- "inet_ntop");
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING,
+ "inet_ntop");
return GNUNET_SYSERR;
}
if (NULL == inet_ntop (AF_INET,
remv4,
INET_ADDRSTRLEN))
{
- GNUNET_log_from_strerror (GNUNET_ERROR_TYPE_WARNING,
- "nat",
- "inet_ntop");
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING,
+ "inet_ntop");
return GNUNET_SYSERR;
}
GNUNET_snprintf (port_as_string,
sizeof (port_as_string),
"%d",
internal_port);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- _("Running gnunet-helper-nat-client %s %s %u\n"),
- intv4,
- remv4,
- internal_port);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Running gnunet-helper-nat-client %s %s %u\n"),
+ intv4,
+ remv4,
+ internal_port);
binary
= GNUNET_OS_get_libexec_binary_path ("gnunet-helper-nat-client");
proc
projects / oweals / gnunet.git / commitdiff