]>
git.ipfire.org Git - thirdparty/cups.git/blob - scheduler/network.c
2 * "$Id: network.c 6649 2007-07-11 21:46:42Z mike $"
4 * Network interface functions for the Common UNIX Printing System
7 * Copyright 2007 by Apple Inc.
8 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
10 * These coded instructions, statements, and computer programs are the
11 * property of Apple Inc. and are protected by Federal copyright
12 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
13 * "LICENSE" which should have been included with this file. If this
14 * file is missing or damaged, see the license at "http://www.cups.org/".
18 * cupsdNetIFFind() - Find a network interface.
19 * cupsdNetIFFree() - Free the current network interface list.
20 * cupsdNetIFUpdate() - Update the network interface list as needed...
21 * compare_netif() - Compare two network interfaces.
25 * Include necessary headers.
28 #include <cups/http-private.h>
36 static void cupsdNetIFFree(void);
37 static int compare_netif(cupsd_netif_t
*a
, cupsd_netif_t
*b
);
41 * 'cupsdNetIFFind()' - Find a network interface.
44 cupsd_netif_t
* /* O - Network interface data */
45 cupsdNetIFFind(const char *name
) /* I - Name of interface */
47 cupsd_netif_t key
; /* Search key */
51 * Update the interface list as needed...
58 * Search for the named interface...
61 strlcpy(key
.name
, name
, sizeof(key
.name
));
63 return ((cupsd_netif_t
*)cupsArrayFind(NetIFList
, &key
));
68 * 'cupsdNetIFFree()' - Free the current network interface list.
74 cupsd_netif_t
*current
; /* Current interface in array */
78 * Loop through the interface list and free all the records...
81 for (current
= (cupsd_netif_t
*)cupsArrayFirst(NetIFList
);
83 current
= (cupsd_netif_t
*)cupsArrayNext(NetIFList
))
85 cupsArrayRemove(NetIFList
, current
);
92 * 'cupsdNetIFUpdate()' - Update the network interface list as needed...
96 cupsdNetIFUpdate(void)
98 int match
; /* Matching address? */
99 cupsd_listener_t
*lis
; /* Listen address */
100 cupsd_netif_t
*temp
; /* New interface */
101 struct ifaddrs
*addrs
, /* Interface address list */
102 *addr
; /* Current interface address */
103 http_addrlist_t
*saddr
; /* Current server address */
104 char hostname
[1024]; /* Hostname for address */
108 * Only update the list if we need to...
117 * Free the old interfaces...
123 * Make sure we have an array...
127 NetIFList
= cupsArrayNew((cups_array_func_t
)compare_netif
, NULL
);
133 * Grab a new list of interfaces...
136 if (getifaddrs(&addrs
) < 0)
139 for (addr
= addrs
; addr
!= NULL
; addr
= addr
->ifa_next
)
142 * See if this interface address is IPv4 or IPv6...
145 if (addr
->ifa_addr
== NULL
||
146 (addr
->ifa_addr
->sa_family
!= AF_INET
148 && addr
->ifa_addr
->sa_family
!= AF_INET6
151 addr
->ifa_netmask
== NULL
|| addr
->ifa_name
== NULL
)
155 * Try looking up the hostname for the address as needed...
159 httpAddrLookup((http_addr_t
*)(addr
->ifa_addr
), hostname
,
164 * Map the default server address and localhost to the server name
165 * and localhost, respectively; for all other addresses, use the
169 if (httpAddrLocalhost((http_addr_t
*)(addr
->ifa_addr
)))
170 strcpy(hostname
, "localhost");
173 for (saddr
= ServerAddrs
; saddr
; saddr
= saddr
->next
)
174 if (httpAddrEqual((http_addr_t
*)(addr
->ifa_addr
), &(saddr
->addr
)))
178 strlcpy(hostname
, ServerName
, sizeof(hostname
));
180 httpAddrString((http_addr_t
*)(addr
->ifa_addr
), hostname
,
186 * Create a new address element...
189 if ((temp
= calloc(1, sizeof(cupsd_netif_t
) +
190 strlen(hostname
))) == NULL
)
194 * Copy all of the information...
197 strlcpy(temp
->name
, addr
->ifa_name
, sizeof(temp
->name
));
198 strcpy(temp
->hostname
, hostname
); /* Safe because hostname is allocated */
200 if (addr
->ifa_addr
->sa_family
== AF_INET
)
203 * Copy IPv4 addresses...
206 memcpy(&(temp
->address
), addr
->ifa_addr
, sizeof(struct sockaddr_in
));
207 memcpy(&(temp
->mask
), addr
->ifa_netmask
, sizeof(struct sockaddr_in
));
209 if (addr
->ifa_dstaddr
)
210 memcpy(&(temp
->broadcast
), addr
->ifa_dstaddr
,
211 sizeof(struct sockaddr_in
));
217 * Copy IPv6 addresses...
220 memcpy(&(temp
->address
), addr
->ifa_addr
, sizeof(struct sockaddr_in6
));
221 memcpy(&(temp
->mask
), addr
->ifa_netmask
, sizeof(struct sockaddr_in6
));
223 if (addr
->ifa_dstaddr
)
224 memcpy(&(temp
->broadcast
), addr
->ifa_dstaddr
,
225 sizeof(struct sockaddr_in6
));
227 #endif /* AF_INET6 */
229 if (!(addr
->ifa_flags
& IFF_POINTOPOINT
) &&
230 !httpAddrLocalhost(&(temp
->address
)))
234 * Determine which port to use when advertising printers...
237 for (lis
= (cupsd_listener_t
*)cupsArrayFirst(Listeners
);
239 lis
= (cupsd_listener_t
*)cupsArrayNext(Listeners
))
243 if (httpAddrAny(&(lis
->address
)))
245 else if (addr
->ifa_addr
->sa_family
== AF_INET
&&
246 lis
->address
.addr
.sa_family
== AF_INET
&&
247 (lis
->address
.ipv4
.sin_addr
.s_addr
&
248 temp
->mask
.ipv4
.sin_addr
.s_addr
) ==
249 temp
->address
.ipv4
.sin_addr
.s_addr
)
252 else if (addr
->ifa_addr
->sa_family
== AF_INET6
&&
253 lis
->address
.addr
.sa_family
== AF_INET6
&&
254 (lis
->address
.ipv6
.sin6_addr
.s6_addr
[0] &
255 temp
->mask
.ipv6
.sin6_addr
.s6_addr
[0]) ==
256 temp
->address
.ipv6
.sin6_addr
.s6_addr
[0] &&
257 (lis
->address
.ipv6
.sin6_addr
.s6_addr
[1] &
258 temp
->mask
.ipv6
.sin6_addr
.s6_addr
[1]) ==
259 temp
->address
.ipv6
.sin6_addr
.s6_addr
[1] &&
260 (lis
->address
.ipv6
.sin6_addr
.s6_addr
[2] &
261 temp
->mask
.ipv6
.sin6_addr
.s6_addr
[2]) ==
262 temp
->address
.ipv6
.sin6_addr
.s6_addr
[2] &&
263 (lis
->address
.ipv6
.sin6_addr
.s6_addr
[3] &
264 temp
->mask
.ipv6
.sin6_addr
.s6_addr
[3]) ==
265 temp
->address
.ipv6
.sin6_addr
.s6_addr
[3])
267 #endif /* AF_INET6 */
271 if (lis
->address
.addr
.sa_family
== AF_INET
)
272 temp
->port
= ntohs(lis
->address
.ipv4
.sin_port
);
274 else if (lis
->address
.addr
.sa_family
== AF_INET6
)
275 temp
->port
= ntohs(lis
->address
.ipv6
.sin6_port
);
276 #endif /* AF_INET6 */
282 * Add it to the array...
285 cupsArrayAdd(NetIFList
, temp
);
287 cupsdLogMessage(CUPSD_LOG_DEBUG
, "cupsdNetIFUpdate: \"%s\" = %s...",
288 temp
->name
, temp
->hostname
);
296 * 'compare_netif()' - Compare two network interfaces.
299 static int /* O - Result of comparison */
300 compare_netif(cupsd_netif_t
*a
, /* I - First network interface */
301 cupsd_netif_t
*b
) /* I - Second network interface */
303 return (strcmp(a
->name
, b
->name
));
308 * End of "$Id: network.c 6649 2007-07-11 21:46:42Z mike $".