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1 office 1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2008 Christian Kellner, Samuel Cormier-Iijima
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
17 *
18 * Authors: Christian Kellner <gicmo@gnome.org>
19 * Samuel Cormier-Iijima <sciyoshi@gmail.com>
20 */
21  
22 #include <config.h>
23 #include <glib.h>
24 #include <string.h>
25  
26 #include "ginetsocketaddress.h"
27 #include "ginetaddress.h"
28 #include "gnetworkingprivate.h"
29 #include "gsocketconnectable.h"
30 #include "gioerror.h"
31 #include "glibintl.h"
32  
33  
34 /**
35 * SECTION:ginetsocketaddress
36 * @short_description: Internet GSocketAddress
37 * @include: gio/gio.h
38 *
39 * An IPv4 or IPv6 socket address; that is, the combination of a
40 * #GInetAddress and a port number.
41 */
42  
43 /**
44 * GInetSocketAddress:
45 *
46 * An IPv4 or IPv6 socket address, corresponding to a struct
47 * sockaddr_in or struct sockaddr_in6.
48 */
49  
50 struct _GInetSocketAddressPrivate
51 {
52 GInetAddress *address;
53 guint16 port;
54 guint32 flowinfo;
55 guint32 scope_id;
56 };
57  
58 static void g_inet_socket_address_connectable_iface_init (GSocketConnectableIface *iface);
59 static gchar *g_inet_socket_address_connectable_to_string (GSocketConnectable *connectable);
60  
61 G_DEFINE_TYPE_WITH_CODE (GInetSocketAddress, g_inet_socket_address, G_TYPE_SOCKET_ADDRESS,
62 G_ADD_PRIVATE (GInetSocketAddress)
63 G_IMPLEMENT_INTERFACE (G_TYPE_SOCKET_CONNECTABLE,
64 g_inet_socket_address_connectable_iface_init))
65  
66 enum {
67 PROP_0,
68 PROP_ADDRESS,
69 PROP_PORT,
70 PROP_FLOWINFO,
71 PROP_SCOPE_ID
72 };
73  
74 static void
75 g_inet_socket_address_dispose (GObject *object)
76 {
77 GInetSocketAddress *address = G_INET_SOCKET_ADDRESS (object);
78  
79 g_clear_object (&(address->priv->address));
80  
81 G_OBJECT_CLASS (g_inet_socket_address_parent_class)->dispose (object);
82 }
83  
84 static void
85 g_inet_socket_address_get_property (GObject *object,
86 guint prop_id,
87 GValue *value,
88 GParamSpec *pspec)
89 {
90 GInetSocketAddress *address = G_INET_SOCKET_ADDRESS (object);
91  
92 switch (prop_id)
93 {
94 case PROP_ADDRESS:
95 g_value_set_object (value, address->priv->address);
96 break;
97  
98 case PROP_PORT:
99 g_value_set_uint (value, address->priv->port);
100 break;
101  
102 case PROP_FLOWINFO:
103 g_return_if_fail (g_inet_address_get_family (address->priv->address) == G_SOCKET_FAMILY_IPV6);
104 g_value_set_uint (value, address->priv->flowinfo);
105 break;
106  
107 case PROP_SCOPE_ID:
108 g_return_if_fail (g_inet_address_get_family (address->priv->address) == G_SOCKET_FAMILY_IPV6);
109 g_value_set_uint (value, address->priv->scope_id);
110 break;
111  
112 default:
113 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
114 }
115 }
116  
117 static void
118 g_inet_socket_address_set_property (GObject *object,
119 guint prop_id,
120 const GValue *value,
121 GParamSpec *pspec)
122 {
123 GInetSocketAddress *address = G_INET_SOCKET_ADDRESS (object);
124  
125 switch (prop_id)
126 {
127 case PROP_ADDRESS:
128 address->priv->address = g_object_ref (g_value_get_object (value));
129 break;
130  
131 case PROP_PORT:
132 address->priv->port = (guint16) g_value_get_uint (value);
133 break;
134  
135 case PROP_FLOWINFO:
136 /* We can't test that address->priv->address is IPv6 here,
137 * since this property might get set before PROP_ADDRESS.
138 */
139 address->priv->flowinfo = g_value_get_uint (value);
140 break;
141  
142 case PROP_SCOPE_ID:
143 address->priv->scope_id = g_value_get_uint (value);
144 break;
145  
146 default:
147 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
148 }
149 }
150  
151 static GSocketFamily
152 g_inet_socket_address_get_family (GSocketAddress *address)
153 {
154 GInetSocketAddress *addr;
155  
156 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), 0);
157  
158 addr = G_INET_SOCKET_ADDRESS (address);
159  
160 return g_inet_address_get_family (addr->priv->address);
161 }
162  
163 static gssize
164 g_inet_socket_address_get_native_size (GSocketAddress *address)
165 {
166 GInetSocketAddress *addr;
167 GSocketFamily family;
168  
169 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), 0);
170  
171 addr = G_INET_SOCKET_ADDRESS (address);
172 family = g_inet_address_get_family (addr->priv->address);
173  
174 if (family == AF_INET)
175 return sizeof (struct sockaddr_in);
176 else if (family == AF_INET6)
177 return sizeof (struct sockaddr_in6);
178 else
179 return -1;
180 }
181  
182 static gboolean
183 g_inet_socket_address_to_native (GSocketAddress *address,
184 gpointer dest,
185 gsize destlen,
186 GError **error)
187 {
188 GInetSocketAddress *addr;
189 GSocketFamily family;
190  
191 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), FALSE);
192  
193 addr = G_INET_SOCKET_ADDRESS (address);
194 family = g_inet_address_get_family (addr->priv->address);
195  
196 if (family == AF_INET)
197 {
198 struct sockaddr_in *sock = (struct sockaddr_in *) dest;
199  
200 if (destlen < sizeof (*sock))
201 {
202 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NO_SPACE,
203 _("Not enough space for socket address"));
204 return FALSE;
205 }
206  
207 sock->sin_family = AF_INET;
208 sock->sin_port = g_htons (addr->priv->port);
209 memcpy (&(sock->sin_addr.s_addr), g_inet_address_to_bytes (addr->priv->address), sizeof (sock->sin_addr));
210 memset (sock->sin_zero, 0, sizeof (sock->sin_zero));
211 return TRUE;
212 }
213 else if (family == AF_INET6)
214 {
215 struct sockaddr_in6 *sock = (struct sockaddr_in6 *) dest;
216  
217 if (destlen < sizeof (*sock))
218 {
219 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NO_SPACE,
220 _("Not enough space for socket address"));
221 return FALSE;
222 }
223  
224 memset (sock, 0, sizeof (*sock));
225 sock->sin6_family = AF_INET6;
226 sock->sin6_port = g_htons (addr->priv->port);
227 sock->sin6_flowinfo = addr->priv->flowinfo;
228 sock->sin6_scope_id = addr->priv->scope_id;
229 memcpy (&(sock->sin6_addr.s6_addr), g_inet_address_to_bytes (addr->priv->address), sizeof (sock->sin6_addr));
230 return TRUE;
231 }
232 else
233 {
234 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
235 _("Unsupported socket address"));
236 return FALSE;
237 }
238 }
239  
240 static void
241 g_inet_socket_address_class_init (GInetSocketAddressClass *klass)
242 {
243 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
244 GSocketAddressClass *gsocketaddress_class = G_SOCKET_ADDRESS_CLASS (klass);
245  
246 gobject_class->dispose = g_inet_socket_address_dispose;
247 gobject_class->set_property = g_inet_socket_address_set_property;
248 gobject_class->get_property = g_inet_socket_address_get_property;
249  
250 gsocketaddress_class->get_family = g_inet_socket_address_get_family;
251 gsocketaddress_class->to_native = g_inet_socket_address_to_native;
252 gsocketaddress_class->get_native_size = g_inet_socket_address_get_native_size;
253  
254 g_object_class_install_property (gobject_class, PROP_ADDRESS,
255 g_param_spec_object ("address",
256 P_("Address"),
257 P_("The address"),
258 G_TYPE_INET_ADDRESS,
259 G_PARAM_CONSTRUCT_ONLY |
260 G_PARAM_READWRITE |
261 G_PARAM_STATIC_STRINGS));
262  
263 g_object_class_install_property (gobject_class, PROP_PORT,
264 g_param_spec_uint ("port",
265 P_("Port"),
266 P_("The port"),
267 0,
268 65535,
269 0,
270 G_PARAM_CONSTRUCT_ONLY |
271 G_PARAM_READWRITE |
272 G_PARAM_STATIC_STRINGS));
273  
274 /**
275 * GInetSocketAddress:flowinfo:
276 *
277 * The `sin6_flowinfo` field, for IPv6 addresses.
278 *
279 * Since: 2.32
280 */
281 g_object_class_install_property (gobject_class, PROP_FLOWINFO,
282 g_param_spec_uint ("flowinfo",
283 P_("Flow info"),
284 P_("IPv6 flow info"),
285 0,
286 G_MAXUINT32,
287 0,
288 G_PARAM_CONSTRUCT_ONLY |
289 G_PARAM_READWRITE |
290 G_PARAM_STATIC_STRINGS));
291  
292 /**
293 * GInetSocketAddress:scope_id:
294 *
295 * The `sin6_scope_id` field, for IPv6 addresses.
296 *
297 * Since: 2.32
298 */
299 g_object_class_install_property (gobject_class, PROP_SCOPE_ID,
300 g_param_spec_uint ("scope-id",
301 P_("Scope ID"),
302 P_("IPv6 scope ID"),
303 0,
304 G_MAXUINT32,
305 0,
306 G_PARAM_CONSTRUCT_ONLY |
307 G_PARAM_READWRITE |
308 G_PARAM_STATIC_STRINGS));
309 }
310  
311 static void
312 g_inet_socket_address_connectable_iface_init (GSocketConnectableIface *iface)
313 {
314 GSocketConnectableIface *parent_iface = g_type_interface_peek_parent (iface);
315  
316 iface->enumerate = parent_iface->enumerate;
317 iface->proxy_enumerate = parent_iface->proxy_enumerate;
318 iface->to_string = g_inet_socket_address_connectable_to_string;
319 }
320  
321 static gchar *
322 g_inet_socket_address_connectable_to_string (GSocketConnectable *connectable)
323 {
324 GInetSocketAddress *sa;
325 GInetAddress *a;
326 gchar *a_string;
327 GString *out;
328 guint16 port;
329  
330 sa = G_INET_SOCKET_ADDRESS (connectable);
331 a = g_inet_socket_address_get_address (sa);
332 out = g_string_new ("");
333  
334 /* Address. */
335 a_string = g_inet_address_to_string (a);
336 g_string_append (out, a_string);
337 g_free (a_string);
338  
339 /* Scope ID (IPv6 only). */
340 if (g_inet_address_get_family (a) == G_SOCKET_FAMILY_IPV6 &&
341 g_inet_socket_address_get_scope_id (sa) != 0)
342 {
343 g_string_append_printf (out, "%%%u",
344 g_inet_socket_address_get_scope_id (sa));
345 }
346  
347 /* Port. */
348 port = g_inet_socket_address_get_port (sa);
349 if (port != 0)
350 {
351 /* Disambiguate ports from IPv6 addresses using square brackets. */
352 if (g_inet_address_get_family (a) == G_SOCKET_FAMILY_IPV6)
353 {
354 g_string_prepend (out, "[");
355 g_string_append (out, "]");
356 }
357  
358 g_string_append_printf (out, ":%u", port);
359 }
360  
361 return g_string_free (out, FALSE);
362 }
363  
364 static void
365 g_inet_socket_address_init (GInetSocketAddress *address)
366 {
367 address->priv = g_inet_socket_address_get_instance_private (address);
368 }
369  
370 /**
371 * g_inet_socket_address_new:
372 * @address: a #GInetAddress
373 * @port: a port number
374 *
375 * Creates a new #GInetSocketAddress for @address and @port.
376 *
377 * Returns: a new #GInetSocketAddress
378 *
379 * Since: 2.22
380 */
381 GSocketAddress *
382 g_inet_socket_address_new (GInetAddress *address,
383 guint16 port)
384 {
385 return g_object_new (G_TYPE_INET_SOCKET_ADDRESS,
386 "address", address,
387 "port", port,
388 NULL);
389 }
390  
391 /**
392 * g_inet_socket_address_new_from_string:
393 * @address: the string form of an IP address
394 * @port: a port number
395 *
396 * Creates a new #GInetSocketAddress for @address and @port.
397 *
398 * If @address is an IPv6 address, it can also contain a scope ID
399 * (separated from the address by a "<literal>%</literal>").
400 *
401 * Returns: a new #GInetSocketAddress, or %NULL if @address cannot be
402 * parsed.
403 *
404 * Since: 2.40
405 */
406 GSocketAddress *
407 g_inet_socket_address_new_from_string (const char *address,
408 guint port)
409 {
410 static struct addrinfo *hints, hints_struct;
411 GSocketAddress *saddr;
412 GInetAddress *iaddr;
413 struct addrinfo *res;
414 gint status;
415  
416 if (strchr (address, ':'))
417 {
418 /* IPv6 address (or it's invalid). We use getaddrinfo() because
419 * it will handle parsing a scope_id as well.
420 */
421  
422 if (G_UNLIKELY (g_once_init_enter (&hints)))
423 {
424 hints_struct.ai_family = AF_UNSPEC;
425 hints_struct.ai_socktype = SOCK_STREAM;
426 hints_struct.ai_protocol = 0;
427 hints_struct.ai_flags = AI_NUMERICHOST;
428 g_once_init_leave (&hints, &hints_struct);
429 }
430  
431 status = getaddrinfo (address, NULL, hints, &res);
432 if (status != 0)
433 return NULL;
434  
435 if (res->ai_family == AF_INET6 &&
436 res->ai_addrlen == sizeof (struct sockaddr_in6))
437 {
438 ((struct sockaddr_in6 *)res->ai_addr)->sin6_port = g_htons (port);
439 saddr = g_socket_address_new_from_native (res->ai_addr, res->ai_addrlen);
440 }
441 else
442 saddr = NULL;
443  
444 freeaddrinfo (res);
445 }
446 else
447 {
448 /* IPv4 (or invalid). We don't want to use getaddrinfo() here,
449 * because it accepts the stupid "IPv4 numbers-and-dots
450 * notation" addresses that are never used for anything except
451 * phishing. Since we don't have to worry about scope IDs for
452 * IPv4, we can just use g_inet_address_new_from_string().
453 */
454 iaddr = g_inet_address_new_from_string (address);
455 if (!iaddr)
456 return NULL;
457  
458 g_warn_if_fail (g_inet_address_get_family (iaddr) == G_SOCKET_FAMILY_IPV4);
459  
460 saddr = g_inet_socket_address_new (iaddr, port);
461 g_object_unref (iaddr);
462 }
463  
464 return saddr;
465 }
466  
467 /**
468 * g_inet_socket_address_get_address:
469 * @address: a #GInetSocketAddress
470 *
471 * Gets @address's #GInetAddress.
472 *
473 * Returns: (transfer none): the #GInetAddress for @address, which must be
474 * g_object_ref()'d if it will be stored
475 *
476 * Since: 2.22
477 */
478 GInetAddress *
479 g_inet_socket_address_get_address (GInetSocketAddress *address)
480 {
481 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), NULL);
482  
483 return address->priv->address;
484 }
485  
486 /**
487 * g_inet_socket_address_get_port:
488 * @address: a #GInetSocketAddress
489 *
490 * Gets @address's port.
491 *
492 * Returns: the port for @address
493 *
494 * Since: 2.22
495 */
496 guint16
497 g_inet_socket_address_get_port (GInetSocketAddress *address)
498 {
499 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), 0);
500  
501 return address->priv->port;
502 }
503  
504  
505 /**
506 * g_inet_socket_address_get_flowinfo:
507 * @address: a %G_SOCKET_FAMILY_IPV6 #GInetSocketAddress
508 *
509 * Gets the `sin6_flowinfo` field from @address,
510 * which must be an IPv6 address.
511 *
512 * Returns: the flowinfo field
513 *
514 * Since: 2.32
515 */
516 guint32
517 g_inet_socket_address_get_flowinfo (GInetSocketAddress *address)
518 {
519 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), 0);
520 g_return_val_if_fail (g_inet_address_get_family (address->priv->address) == G_SOCKET_FAMILY_IPV6, 0);
521  
522 return address->priv->flowinfo;
523 }
524  
525 /**
526 * g_inet_socket_address_get_scope_id:
527 * @address: a %G_SOCKET_FAMILY_IPV6 #GInetAddress
528 *
529 * Gets the `sin6_scope_id` field from @address,
530 * which must be an IPv6 address.
531 *
532 * Returns: the scope id field
533 *
534 * Since: 2.32
535 */
536 guint32
537 g_inet_socket_address_get_scope_id (GInetSocketAddress *address)
538 {
539 g_return_val_if_fail (G_IS_INET_SOCKET_ADDRESS (address), 0);
540 g_return_val_if_fail (g_inet_address_get_family (address->priv->address) == G_SOCKET_FAMILY_IPV6, 0);
541  
542 return address->priv->scope_id;
543 }