void
xfer_network_send_file_fork (struct t_xfer *xfer)
{
pid_t pid;
int rc;
if (!xfer_network_create_pipe (xfer))
return;
xfer->file = open (xfer->local_filename, O_RDONLY | O_NONBLOCK, 0644);
switch (pid = fork ())
{
case -1: /* fork failed */
dogechat_printf (NULL,
_("%s%s: unable to fork"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return;
case 0: /* child process */
rc = setuid (getuid ());
(void) rc;
close (xfer->child_read);
switch (xfer->protocol)
{
case XFER_NO_PROTOCOL:
_exit (EXIT_SUCCESS);
break;
case XFER_PROTOCOL_DCC:
xfer_dcc_send_file_child (xfer);
break;
case XFER_NUM_PROTOCOLS:
break;
}
_exit (EXIT_SUCCESS);
}
dogechat_printf (NULL,
_("%s: sending file to %s (%s, %s.%s), "
"name: %s (local filename: %s), %llu bytes (protocol: %s)"),
XFER_PLUGIN_NAME,
xfer->remote_nick,
xfer->remote_address_str,
xfer->plugin_name,
xfer->plugin_id,
xfer->filename,
xfer->local_filename,
xfer->size,
xfer_protocol_string[xfer->protocol]);
/* parent process */
xfer->child_pid = pid;
close (xfer->child_write);
xfer->child_write = -1;
xfer->hook_fd = dogechat_hook_fd (xfer->child_read,
1, 0, 0,
&xfer_network_child_read_cb,
xfer);
}
void
xfer_network_recv_file_fork (struct t_xfer *xfer)
{
pid_t pid;
int rc;
if (!xfer_network_create_pipe (xfer))
return;
if (xfer->start_resume > 0)
xfer->file = open (xfer->local_filename,
O_APPEND | O_WRONLY | O_NONBLOCK);
else
xfer->file = open (xfer->local_filename,
O_CREAT | O_TRUNC | O_WRONLY | O_NONBLOCK,
0644);
switch (pid = fork ())
{
case -1: /* fork failed */
dogechat_printf (NULL,
_("%s%s: unable to fork"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return;
case 0: /* child process */
rc = setuid (getuid ());
(void) rc;
close (xfer->child_read);
switch (xfer->protocol)
{
case XFER_NO_PROTOCOL:
_exit (EXIT_SUCCESS);
break;
case XFER_PROTOCOL_DCC:
xfer_dcc_recv_file_child (xfer);
break;
case XFER_NUM_PROTOCOLS:
break;
}
_exit (EXIT_SUCCESS);
}
/* parent process */
xfer->child_pid = pid;
close (xfer->child_write);
xfer->child_write = -1;
xfer->hook_fd = dogechat_hook_fd (xfer->child_read,
1, 0, 0,
&xfer_network_child_read_cb,
xfer);
}
int
relay_server_create_socket (struct t_relay_server *server)
{
int domain, set, max_clients, addr_size;
struct sockaddr_in server_addr;
struct sockaddr_in6 server_addr6;
const char *bind_address;
void *ptr_addr;
bind_address = dogechat_config_string (relay_config_network_bind_address);
if (server->ipv6)
{
domain = AF_INET6;
memset (&server_addr6, 0, sizeof (struct sockaddr_in6));
server_addr6.sin6_family = domain;
server_addr6.sin6_port = htons (server->port);
server_addr6.sin6_addr = in6addr_any;
if (bind_address && bind_address[0])
{
if (!inet_pton (domain, bind_address, &server_addr6.sin6_addr))
{
dogechat_printf (NULL,
/* TRANSLATORS: second "%s" is "IPv4" or "IPv6" */
_("%s%s: invalid bind address \"%s\" for %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
bind_address, "IPv6");
return 0;
}
}
ptr_addr = &server_addr6;
addr_size = sizeof (struct sockaddr_in6);
}
else
{
domain = AF_INET;
memset (&server_addr, 0, sizeof (struct sockaddr_in));
server_addr.sin_family = domain;
server_addr.sin_port = htons (server->port);
server_addr.sin_addr.s_addr = INADDR_ANY;
if (bind_address && bind_address[0])
{
if (!inet_pton (domain, bind_address, &server_addr.sin_addr))
{
dogechat_printf (NULL,
/* TRANSLATORS: second "%s" is "IPv4" or "IPv6" */
_("%s%s: invalid bind address \"%s\" for %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
bind_address, "IPv4");
return 0;
}
}
ptr_addr = &server_addr;
addr_size = sizeof (struct sockaddr_in);
}
/* create socket */
server->sock = socket (domain, SOCK_STREAM, 0);
if (server->sock < 0)
{
dogechat_printf (NULL,
_("%s%s: cannot create socket: error %d %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
errno, strerror (errno));
if (errno == EAFNOSUPPORT)
{
dogechat_printf (NULL,
_("%s%s: try /set relay.network.ipv6 off"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME);
}
return 0;
}
#ifdef IPV6_V6ONLY
/* set option IPV6_V6ONLY to 0 or 1 */
if (server->ipv6)
{
set = (server->ipv4) ? 0 : 1;
if (setsockopt (server->sock, IPPROTO_IPV6, IPV6_V6ONLY,
(void *) &set, sizeof (set)) < 0)
{
dogechat_printf (NULL,
_("%s%s: cannot set socket option \"%s\" "
"to %d: error %d %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
"IPV6_V6ONLY", set, errno, strerror (errno));
close (server->sock);
server->sock = -1;
return 0;
}
}
#endif /* IPV6_V6ONLY */
/* set option SO_REUSEADDR to 1 */
set = 1;
if (setsockopt (server->sock, SOL_SOCKET, SO_REUSEADDR,
(void *) &set, sizeof (set)) < 0)
{
dogechat_printf (NULL,
_("%s%s: cannot set socket option \"%s\" to %d: "
"error %d %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
"SO_REUSEADDR", set, errno, strerror (errno));
close (server->sock);
server->sock = -1;
return 0;
}
/* set option SO_KEEPALIVE to 1 */
set = 1;
if (setsockopt (server->sock, SOL_SOCKET, SO_KEEPALIVE,
(void *) &set, sizeof (set)) < 0)
{
dogechat_printf (NULL,
_("%s%s: cannot set socket option \"%s\" to %d: "
"error %d %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
"SO_KEEPALIVE", set, errno, strerror (errno));
close (server->sock);
server->sock = -1;
return 0;
}
/* bind */
if (bind (server->sock, (struct sockaddr *)ptr_addr, addr_size) < 0)
{
dogechat_printf (NULL,
_("%s%s: cannot \"bind\" on port %d (%s): error %d %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
server->port, server->protocol_string,
errno, strerror (errno));
close (server->sock);
server->sock = -1;
return 0;
}
max_clients = dogechat_config_integer (relay_config_network_max_clients);
if (listen (server->sock, max_clients) != 0)
{
dogechat_printf (NULL,
_("%s%s: cannot \"listen\" on port %d (%s): error %d %s"),
dogechat_prefix ("error"), RELAY_PLUGIN_NAME,
server->port, server->protocol_string,
errno, strerror (errno));
close (server->sock);
server->sock = -1;
return 0;
}
dogechat_printf (NULL,
_("%s: listening on port %d (relay: %s, %s, max %d clients)"),
RELAY_PLUGIN_NAME,
server->port,
server->protocol_string,
((server->ipv4 && server->ipv6) ? "IPv4+6" : ((server->ipv6) ? "IPv6" : "IPv4")),
max_clients);
server->hook_fd = dogechat_hook_fd (server->sock,
1, 0, 0,
&relay_server_sock_cb,
server);
server->start_time = time (NULL);
return 1;
}
int
fifo_read (void *data, int fd)
{
static char buffer[4096 + 2];
char *buf2, *pos, *ptr_buf, *next_ptr_buf;
int num_read;
/* make C compiler happy */
(void) data;
(void) fd;
num_read = read (fifo_fd, buffer, sizeof (buffer) - 2);
if (num_read > 0)
{
buffer[num_read] = '\0';
buf2 = NULL;
ptr_buf = buffer;
if (fifo_unterminated)
{
buf2 = malloc (strlen (fifo_unterminated) +
strlen (buffer) + 1);
if (buf2)
{
strcpy (buf2, fifo_unterminated);
strcat (buf2, buffer);
}
ptr_buf = buf2;
free (fifo_unterminated);
fifo_unterminated = NULL;
}
while (ptr_buf && ptr_buf[0])
{
next_ptr_buf = NULL;
pos = strstr (ptr_buf, "\r\n");
if (pos)
{
pos[0] = '\0';
next_ptr_buf = pos + 2;
}
else
{
pos = strstr (ptr_buf, "\n");
if (pos)
{
pos[0] = '\0';
next_ptr_buf = pos + 1;
}
else
{
fifo_unterminated = strdup (ptr_buf);
ptr_buf = NULL;
next_ptr_buf = NULL;
}
}
if (ptr_buf)
fifo_exec (ptr_buf);
ptr_buf = next_ptr_buf;
}
if (buf2)
free (buf2);
}
else
{
if (num_read < 0)
{
#ifdef __CYGWIN__
if ((errno == EAGAIN) || (errno == ECOMM))
#else
if (errno == EAGAIN)
#endif /* __CYGWIN__ */
return DOGECHAT_RC_OK;
dogechat_printf (NULL,
_("%s%s: error reading pipe (%d %s), closing it"),
dogechat_prefix ("error"), FIFO_PLUGIN_NAME,
errno, strerror (errno));
fifo_remove ();
}
else
{
dogechat_unhook (fifo_fd_hook);
fifo_fd_hook = NULL;
close (fifo_fd);
fifo_fd = open (fifo_filename, O_RDONLY | O_NONBLOCK);
if (fifo_fd < 0)
{
dogechat_printf (NULL,
_("%s%s: error opening file, closing it"),
dogechat_prefix ("error"), FIFO_PLUGIN_NAME);
fifo_remove ();
}
else
fifo_fd_hook = dogechat_hook_fd (fifo_fd, 1, 0, 0,
&fifo_read, NULL);
}
}
return DOGECHAT_RC_OK;
}
void
fifo_create ()
{
int filename_length;
const char *fifo_option, *dogechat_home;
fifo_option = dogechat_config_get_plugin ("fifo");
if (!fifo_option)
{
dogechat_config_set_plugin ("fifo", "on");
fifo_option = dogechat_config_get_plugin ("fifo");
}
dogechat_home = dogechat_info_get ("dogechat_dir", "");
if (fifo_option && dogechat_home)
{
fifo_remove_old_pipes ();
if (dogechat_strcasecmp (fifo_option, "on") == 0)
{
/*
* build FIFO filename:
* "<dogechat_home>/dogechat_fifo_" + process PID
*/
if (!fifo_filename)
{
filename_length = strlen (dogechat_home) + 64;
fifo_filename = malloc (filename_length);
snprintf (fifo_filename, filename_length,
"%s/%s%d",
dogechat_home, FIFO_FILENAME_PREFIX, (int) getpid());
}
fifo_fd = -1;
/* create FIFO pipe, writable for user only */
if (mkfifo (fifo_filename, 0600) == 0)
{
/* open FIFO pipe in read-only, non-blocking mode */
if ((fifo_fd = open (fifo_filename,
O_RDONLY | O_NONBLOCK)) != -1)
{
if ((dogechat_fifo_plugin->debug >= 1) || !fifo_quiet)
{
dogechat_printf (NULL,
_("%s: pipe opened (file: %s)"),
FIFO_PLUGIN_NAME,
fifo_filename);
}
fifo_fd_hook = dogechat_hook_fd (fifo_fd, 1, 0, 0,
&fifo_read, NULL);
}
else
dogechat_printf (NULL,
_("%s%s: unable to open pipe (%s) for "
"reading"),
dogechat_prefix ("error"), FIFO_PLUGIN_NAME,
fifo_filename);
}
else
{
dogechat_printf (NULL,
_("%s%s: unable to create pipe for remote "
"control (%s): error %d %s"),
dogechat_prefix ("error"), FIFO_PLUGIN_NAME,
fifo_filename, errno, strerror (errno));
}
}
}
}
int
xfer_network_connect (struct t_xfer *xfer)
{
int flags;
if (xfer->type == XFER_TYPE_CHAT_SEND)
xfer->status = XFER_STATUS_WAITING;
else
xfer->status = XFER_STATUS_CONNECTING;
if (XFER_IS_SEND(xfer->type))
{
/* create socket */
if (xfer->sock < 0)
{
xfer->sock = socket (xfer->local_address->sa_family, SOCK_STREAM,
0);
if (xfer->sock < 0)
return 0;
}
/* listen to socket */
flags = fcntl (xfer->sock, F_GETFL);
if (flags == -1)
flags = 0;
if (fcntl (xfer->sock, F_SETFL, flags | O_NONBLOCK) == -1)
return 0;
if (listen (xfer->sock, 1) == -1)
return 0;
if (fcntl (xfer->sock, F_SETFL, flags) == -1)
return 0;
xfer->hook_fd = dogechat_hook_fd (xfer->sock,
1, 0, 0,
&xfer_network_fd_cb,
xfer);
/* add timeout */
if (dogechat_config_integer (xfer_config_network_timeout) > 0)
{
xfer->hook_timer = dogechat_hook_timer (dogechat_config_integer (xfer_config_network_timeout) * 1000,
0, 1,
&xfer_network_timer_cb,
xfer);
}
}
/* for chat receiving, connect to listening host */
if (xfer->type == XFER_TYPE_CHAT_RECV)
{
xfer->hook_connect = dogechat_hook_connect (xfer->proxy,
xfer->remote_address_str,
xfer->port, 1, 0, NULL, NULL,
0, "NONE", NULL,
&xfer_network_connect_chat_recv_cb,
xfer);
}
/* for file receiving, connection is made in child process (blocking) */
return 1;
}
int
xfer_network_connect_chat_recv_cb (void *data, int status, int gnutls_rc,
int sock, const char *error,
const char *ip_address)
{
struct t_xfer *xfer;
int flags;
/* make C compiler happy */
(void) gnutls_rc;
(void) ip_address;
xfer = (struct t_xfer*)data;
dogechat_unhook (xfer->hook_connect);
xfer->hook_connect = NULL;
/* connection OK? */
if (status == DOGECHAT_HOOK_CONNECT_OK)
{
xfer->sock = sock;
flags = fcntl (xfer->sock, F_GETFL);
if (flags == -1)
flags = 0;
if (fcntl (xfer->sock, F_SETFL, flags | O_NONBLOCK) == -1)
{
dogechat_printf (NULL,
_("%s%s: unable to set option \"nonblock\" "
"for socket: error %d %s"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
errno, strerror (errno));
close (xfer->sock);
xfer->sock = -1;
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
xfer->hook_fd = dogechat_hook_fd (xfer->sock,
1, 0, 0,
&xfer_chat_recv_cb,
xfer);
xfer_chat_open_buffer (xfer);
xfer->status = XFER_STATUS_ACTIVE;
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
/* connection error */
switch (status)
{
case DOGECHAT_HOOK_CONNECT_ADDRESS_NOT_FOUND:
dogechat_printf (NULL,
(xfer->proxy && xfer->proxy[0]) ?
_("%s%s: proxy address \"%s\" not found") :
_("%s%s: address \"%s\" not found"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
xfer->remote_address_str);
break;
case DOGECHAT_HOOK_CONNECT_IP_ADDRESS_NOT_FOUND:
dogechat_printf (NULL,
(xfer->proxy && xfer->proxy[0]) ?
_("%s%s: proxy IP address not found") :
_("%s%s: IP address not found"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
case DOGECHAT_HOOK_CONNECT_CONNECTION_REFUSED:
dogechat_printf (NULL,
(xfer->proxy && xfer->proxy[0]) ?
_("%s%s: proxy connection refused") :
_("%s%s: connection refused"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
case DOGECHAT_HOOK_CONNECT_PROXY_ERROR:
dogechat_printf (NULL,
_("%s%s: proxy fails to establish connection to "
"server (check username/password if used and if "
"server address/port is allowed by proxy)"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
case DOGECHAT_HOOK_CONNECT_LOCAL_HOSTNAME_ERROR:
dogechat_printf (NULL,
_("%s%s: unable to set local hostname/IP"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
case DOGECHAT_HOOK_CONNECT_MEMORY_ERROR:
dogechat_printf (NULL,
_("%s%s: not enough memory"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
case DOGECHAT_HOOK_CONNECT_TIMEOUT:
dogechat_printf (NULL,
_("%s%s: timeout"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
case DOGECHAT_HOOK_CONNECT_SOCKET_ERROR:
dogechat_printf (NULL,
_("%s%s: unable to create socket"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME);
break;
default:
dogechat_printf (NULL,
_("%s%s: unable to connect: unexpected error (%d)"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
status);
break;
}
if (error && error[0])
{
dogechat_printf (NULL,
_("%s%s: error: %s"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME, error);
}
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
int
xfer_network_fd_cb (void *arg_xfer, int fd)
{
struct t_xfer *xfer;
int sock, flags, error;
struct sockaddr_storage addr;
socklen_t length;
char str_address[NI_MAXHOST];
/* make C compiler happy */
(void) fd;
length = sizeof (addr);
memset (&addr, 0, length);
xfer = (struct t_xfer *)arg_xfer;
if (xfer->status == XFER_STATUS_CONNECTING)
{
if (xfer->type == XFER_TYPE_FILE_SEND)
{
xfer->last_activity = time (NULL);
sock = accept (xfer->sock,
(struct sockaddr *) &addr, &length);
error = errno;
dogechat_unhook (xfer->hook_fd);
xfer->hook_fd = NULL;
close (xfer->sock);
xfer->sock = -1;
if (sock < 0)
{
dogechat_printf (NULL,
_("%s%s: unable to create socket for sending "
"file: error %d %s"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
error, strerror (error));
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
xfer->sock = sock;
flags = fcntl (xfer->sock, F_GETFL);
if (flags == -1)
flags = 0;
if (fcntl (xfer->sock, F_SETFL, flags | O_NONBLOCK) == -1)
{
dogechat_printf (NULL,
_("%s%s: unable to set option \"nonblock\" "
"for socket: error %d %s"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
errno, strerror (errno));
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
error = getnameinfo ((struct sockaddr *)&addr, length, str_address,
sizeof (str_address), NULL, 0, NI_NUMERICHOST);
if (error != 0)
{
snprintf (str_address, sizeof (str_address),
"error: %s", gai_strerror (error));
}
xfer_set_remote_address (xfer, (struct sockaddr *)&addr, length,
str_address);
xfer->status = XFER_STATUS_ACTIVE;
xfer->start_transfer = time (NULL);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
xfer_network_send_file_fork (xfer);
}
}
if (xfer->status == XFER_STATUS_WAITING)
{
if (xfer->type == XFER_TYPE_CHAT_SEND)
{
length = sizeof (addr);
sock = accept (xfer->sock, (struct sockaddr *) &addr, &length);
error = errno;
dogechat_unhook (xfer->hook_fd);
xfer->hook_fd = NULL;
close (xfer->sock);
xfer->sock = -1;
if (sock < 0)
{
dogechat_printf (NULL,
_("%s%s: unable to create socket for sending "
"file: error %d %s"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
error, strerror (error));
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
xfer->sock = sock;
flags = fcntl (xfer->sock, F_GETFL);
if (flags == -1)
flags = 0;
if (fcntl (xfer->sock, F_SETFL, flags | O_NONBLOCK) == -1)
{
dogechat_printf (NULL,
_("%s%s: unable to set option \"nonblock\" "
"for socket: error %d %s"),
dogechat_prefix ("error"), XFER_PLUGIN_NAME,
errno, strerror (errno));
xfer_close (xfer, XFER_STATUS_FAILED);
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
return DOGECHAT_RC_OK;
}
error = getnameinfo ((struct sockaddr *)&addr, length, str_address,
sizeof (str_address), NULL, 0, NI_NUMERICHOST);
if (error != 0)
{
snprintf (str_address, sizeof (str_address),
"error: %s", gai_strerror (error));
}
xfer_set_remote_address (xfer, (struct sockaddr *)&addr, length,
str_address);
xfer->status = XFER_STATUS_ACTIVE;
xfer_buffer_refresh (DOGECHAT_HOTLIST_MESSAGE);
xfer->hook_fd = dogechat_hook_fd (xfer->sock,
1, 0, 0,
&xfer_chat_recv_cb,
xfer);
xfer_chat_open_buffer (xfer);
}
}
return DOGECHAT_RC_OK;
}
