2 * "$Id: network.c 10379 2012-03-23 22:16:22Z mike $"
4 * Network interface functions for the CUPS scheduler.
6 * Copyright 2007-2012 by Apple Inc.
7 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
9 * These coded instructions, statements, and computer programs are the
10 * property of Apple Inc. and are protected by Federal copyright
11 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
12 * "LICENSE" which should have been included with this file. If this
13 * file is missing or damaged, see the license at "http://www.cups.org/".
17 * cupsdNetIFFind() - Find a network interface.
18 * cupsdNetIFFree() - Free the current network interface list.
19 * cupsdNetIFUpdate() - Update the network interface list as needed...
20 * compare_netif() - Compare two network interfaces.
24 * Include necessary headers.
27 #include <cups/http-private.h>
35 static void cupsdNetIFFree(void);
36 static int compare_netif(cupsd_netif_t *a, cupsd_netif_t *b);
40 * 'cupsdNetIFFind()' - Find a network interface.
43 cupsd_netif_t * /* O - Network interface data */
44 cupsdNetIFFind(const char *name) /* I - Name of interface */
46 cupsd_netif_t key; /* Search key */
50 * Update the interface list as needed...
57 * Search for the named interface...
60 strlcpy(key.name, name, sizeof(key.name));
62 return ((cupsd_netif_t *)cupsArrayFind(NetIFList, &key));
67 * 'cupsdNetIFFree()' - Free the current network interface list.
73 cupsd_netif_t *current; /* Current interface in array */
77 * Loop through the interface list and free all the records...
80 for (current = (cupsd_netif_t *)cupsArrayFirst(NetIFList);
82 current = (cupsd_netif_t *)cupsArrayNext(NetIFList))
84 cupsArrayRemove(NetIFList, current);
91 * 'cupsdNetIFUpdate()' - Update the network interface list as needed...
95 cupsdNetIFUpdate(void)
97 int match; /* Matching address? */
98 cupsd_listener_t *lis; /* Listen address */
99 cupsd_netif_t *temp; /* New interface */
100 struct ifaddrs *addrs, /* Interface address list */
101 *addr; /* Current interface address */
102 char hostname[1024]; /* Hostname for address */
103 size_t hostlen; /* Length of hostname */
107 * Only update the list if we need to...
116 * Free the old interfaces...
122 * Make sure we have an array...
126 NetIFList = cupsArrayNew((cups_array_func_t)compare_netif, NULL);
132 * Grab a new list of interfaces...
135 if (getifaddrs(&addrs) < 0)
138 for (addr = addrs; addr != NULL; addr = addr->ifa_next)
141 * See if this interface address is IPv4 or IPv6...
144 if (addr->ifa_addr == NULL ||
145 (addr->ifa_addr->sa_family != AF_INET
147 && addr->ifa_addr->sa_family != AF_INET6
150 addr->ifa_netmask == NULL || addr->ifa_name == NULL)
154 * Try looking up the hostname for the address as needed...
158 httpAddrLookup((http_addr_t *)(addr->ifa_addr), hostname,
163 * Map the default server address and localhost to the server name
164 * and localhost, respectively; for all other addresses, use the
168 if (httpAddrLocalhost((http_addr_t *)(addr->ifa_addr)))
169 strlcpy(hostname, "localhost", sizeof(hostname));
171 httpAddrString((http_addr_t *)(addr->ifa_addr), hostname,
176 * Create a new address element...
179 hostlen = strlen(hostname);
180 if ((temp = calloc(1, sizeof(cupsd_netif_t) + hostlen)) == NULL)
184 * Copy all of the information...
187 strlcpy(temp->name, addr->ifa_name, sizeof(temp->name));
188 temp->hostlen = hostlen;
189 memcpy(temp->hostname, hostname, hostlen + 1);
191 if (addr->ifa_addr->sa_family == AF_INET)
194 * Copy IPv4 addresses...
197 memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in));
198 memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in));
200 if (addr->ifa_dstaddr)
201 memcpy(&(temp->broadcast), addr->ifa_dstaddr,
202 sizeof(struct sockaddr_in));
208 * Copy IPv6 addresses...
211 memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in6));
212 memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in6));
214 if (addr->ifa_dstaddr)
215 memcpy(&(temp->broadcast), addr->ifa_dstaddr,
216 sizeof(struct sockaddr_in6));
218 #endif /* AF_INET6 */
220 if (!(addr->ifa_flags & IFF_POINTOPOINT) &&
221 !httpAddrLocalhost(&(temp->address)))
225 * Determine which port to use when advertising printers...
228 for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners);
230 lis = (cupsd_listener_t *)cupsArrayNext(Listeners))
234 if (httpAddrAny(&(lis->address)))
236 else if (addr->ifa_addr->sa_family == AF_INET &&
237 lis->address.addr.sa_family == AF_INET &&
238 (lis->address.ipv4.sin_addr.s_addr &
239 temp->mask.ipv4.sin_addr.s_addr) ==
240 (temp->address.ipv4.sin_addr.s_addr &
241 temp->mask.ipv4.sin_addr.s_addr))
244 else if (addr->ifa_addr->sa_family == AF_INET6 &&
245 lis->address.addr.sa_family == AF_INET6 &&
246 (lis->address.ipv6.sin6_addr.s6_addr[0] &
247 temp->mask.ipv6.sin6_addr.s6_addr[0]) ==
248 (temp->address.ipv6.sin6_addr.s6_addr[0] &
249 temp->mask.ipv6.sin6_addr.s6_addr[0]) &&
250 (lis->address.ipv6.sin6_addr.s6_addr[1] &
251 temp->mask.ipv6.sin6_addr.s6_addr[1]) ==
252 (temp->address.ipv6.sin6_addr.s6_addr[1] &
253 temp->mask.ipv6.sin6_addr.s6_addr[1]) &&
254 (lis->address.ipv6.sin6_addr.s6_addr[2] &
255 temp->mask.ipv6.sin6_addr.s6_addr[2]) ==
256 (temp->address.ipv6.sin6_addr.s6_addr[2] &
257 temp->mask.ipv6.sin6_addr.s6_addr[2]) &&
258 (lis->address.ipv6.sin6_addr.s6_addr[3] &
259 temp->mask.ipv6.sin6_addr.s6_addr[3]) ==
260 (temp->address.ipv6.sin6_addr.s6_addr[3] &
261 temp->mask.ipv6.sin6_addr.s6_addr[3]))
263 #endif /* AF_INET6 */
267 temp->port = _httpAddrPort(&(lis->address));
273 * Add it to the array...
276 cupsArrayAdd(NetIFList, temp);
278 cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: \"%s\" = %s:%d",
279 temp->name, temp->hostname, temp->port);
287 * 'compare_netif()' - Compare two network interfaces.
290 static int /* O - Result of comparison */
291 compare_netif(cupsd_netif_t *a, /* I - First network interface */
292 cupsd_netif_t *b) /* I - Second network interface */
294 return (strcmp(a->name, b->name));
299 * End of "$Id: network.c 10379 2012-03-23 22:16:22Z mike $".