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ef416fc2 | 1 | /* |
61515785 | 2 | * "$Id: network.c 11500 2014-01-06 22:21:15Z msweet $" |
ef416fc2 | 3 | * |
39ff2fe7 | 4 | * Network interface functions for the CUPS scheduler. |
ef416fc2 | 5 | * |
82cc1f9a | 6 | * Copyright 2007-2012 by Apple Inc. |
e00b005a | 7 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
ef416fc2 | 12 | * "LICENSE" which should have been included with this file. If this |
bc44d920 | 13 | * file is missing or damaged, see the license at "http://www.cups.org/". |
ef416fc2 | 14 | * |
15 | * Contents: | |
16 | * | |
17 | * cupsdNetIFFind() - Find a network interface. | |
18 | * cupsdNetIFFree() - Free the current network interface list. | |
19 | * cupsdNetIFUpdate() - Update the network interface list as needed... | |
e00b005a | 20 | * compare_netif() - Compare two network interfaces. |
ef416fc2 | 21 | */ |
22 | ||
23 | /* | |
24 | * Include necessary headers. | |
25 | */ | |
26 | ||
89d46774 | 27 | #include <cups/http-private.h> |
ef416fc2 | 28 | #include "cupsd.h" |
29 | ||
e00b005a | 30 | |
31 | /* | |
32 | * Local functions... | |
33 | */ | |
34 | ||
35 | static void cupsdNetIFFree(void); | |
36 | static int compare_netif(cupsd_netif_t *a, cupsd_netif_t *b); | |
37 | ||
38 | ||
ef416fc2 | 39 | /* |
40 | * 'cupsdNetIFFind()' - Find a network interface. | |
41 | */ | |
42 | ||
43 | cupsd_netif_t * /* O - Network interface data */ | |
44 | cupsdNetIFFind(const char *name) /* I - Name of interface */ | |
45 | { | |
e00b005a | 46 | cupsd_netif_t key; /* Search key */ |
ef416fc2 | 47 | |
48 | ||
49 | /* | |
50 | * Update the interface list as needed... | |
51 | */ | |
52 | ||
411affcf | 53 | if (NetIFUpdate) |
54 | cupsdNetIFUpdate(); | |
ef416fc2 | 55 | |
56 | /* | |
57 | * Search for the named interface... | |
58 | */ | |
59 | ||
e00b005a | 60 | strlcpy(key.name, name, sizeof(key.name)); |
ef416fc2 | 61 | |
e00b005a | 62 | return ((cupsd_netif_t *)cupsArrayFind(NetIFList, &key)); |
ef416fc2 | 63 | } |
64 | ||
65 | ||
66 | /* | |
67 | * 'cupsdNetIFFree()' - Free the current network interface list. | |
68 | */ | |
69 | ||
e00b005a | 70 | static void |
ef416fc2 | 71 | cupsdNetIFFree(void) |
72 | { | |
e00b005a | 73 | cupsd_netif_t *current; /* Current interface in array */ |
ef416fc2 | 74 | |
75 | ||
76 | /* | |
77 | * Loop through the interface list and free all the records... | |
78 | */ | |
79 | ||
e00b005a | 80 | for (current = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
81 | current; | |
82 | current = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 83 | { |
e00b005a | 84 | cupsArrayRemove(NetIFList, current); |
85 | free(current); | |
ef416fc2 | 86 | } |
87 | } | |
88 | ||
89 | ||
90 | /* | |
91 | * 'cupsdNetIFUpdate()' - Update the network interface list as needed... | |
92 | */ | |
93 | ||
94 | void | |
95 | cupsdNetIFUpdate(void) | |
96 | { | |
bd7854cb | 97 | int match; /* Matching address? */ |
ef416fc2 | 98 | cupsd_listener_t *lis; /* Listen address */ |
e00b005a | 99 | cupsd_netif_t *temp; /* New interface */ |
ef416fc2 | 100 | struct ifaddrs *addrs, /* Interface address list */ |
101 | *addr; /* Current interface address */ | |
e00b005a | 102 | char hostname[1024]; /* Hostname for address */ |
e07d4801 | 103 | size_t hostlen; /* Length of hostname */ |
ef416fc2 | 104 | |
105 | ||
106 | /* | |
411affcf | 107 | * Only update the list if we need to... |
ef416fc2 | 108 | */ |
109 | ||
411affcf | 110 | if (!NetIFUpdate) |
ef416fc2 | 111 | return; |
112 | ||
411affcf | 113 | NetIFUpdate = 0; |
ef416fc2 | 114 | |
115 | /* | |
116 | * Free the old interfaces... | |
117 | */ | |
118 | ||
119 | cupsdNetIFFree(); | |
120 | ||
e00b005a | 121 | /* |
122 | * Make sure we have an array... | |
123 | */ | |
124 | ||
125 | if (!NetIFList) | |
126 | NetIFList = cupsArrayNew((cups_array_func_t)compare_netif, NULL); | |
127 | ||
128 | if (!NetIFList) | |
129 | return; | |
130 | ||
ef416fc2 | 131 | /* |
132 | * Grab a new list of interfaces... | |
133 | */ | |
134 | ||
135 | if (getifaddrs(&addrs) < 0) | |
61515785 MS |
136 | { |
137 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Unable to get interface list - %s", strerror(errno)); | |
ef416fc2 | 138 | return; |
61515785 | 139 | } |
ef416fc2 | 140 | |
141 | for (addr = addrs; addr != NULL; addr = addr->ifa_next) | |
142 | { | |
143 | /* | |
144 | * See if this interface address is IPv4 or IPv6... | |
145 | */ | |
146 | ||
147 | if (addr->ifa_addr == NULL || | |
148 | (addr->ifa_addr->sa_family != AF_INET | |
149 | #ifdef AF_INET6 | |
150 | && addr->ifa_addr->sa_family != AF_INET6 | |
151 | #endif | |
152 | ) || | |
153 | addr->ifa_netmask == NULL || addr->ifa_name == NULL) | |
61515785 MS |
154 | { |
155 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Ignoring \"%s\".", addr->ifa_name); | |
ef416fc2 | 156 | continue; |
61515785 | 157 | } |
ef416fc2 | 158 | |
159 | /* | |
e00b005a | 160 | * Try looking up the hostname for the address as needed... |
ef416fc2 | 161 | */ |
162 | ||
ba55dc12 | 163 | if (HostNameLookups) |
e00b005a | 164 | httpAddrLookup((http_addr_t *)(addr->ifa_addr), hostname, |
165 | sizeof(hostname)); | |
166 | else | |
167 | { | |
168 | /* | |
169 | * Map the default server address and localhost to the server name | |
170 | * and localhost, respectively; for all other addresses, use the | |
cc754834 | 171 | * numeric address... |
e00b005a | 172 | */ |
ef416fc2 | 173 | |
e00b005a | 174 | if (httpAddrLocalhost((http_addr_t *)(addr->ifa_addr))) |
82cc1f9a | 175 | strlcpy(hostname, "localhost", sizeof(hostname)); |
e00b005a | 176 | else |
d1c13e16 MS |
177 | httpAddrString((http_addr_t *)(addr->ifa_addr), hostname, |
178 | sizeof(hostname)); | |
e00b005a | 179 | } |
ef416fc2 | 180 | |
e00b005a | 181 | /* |
182 | * Create a new address element... | |
183 | */ | |
ef416fc2 | 184 | |
e07d4801 MS |
185 | hostlen = strlen(hostname); |
186 | if ((temp = calloc(1, sizeof(cupsd_netif_t) + hostlen)) == NULL) | |
61515785 MS |
187 | { |
188 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: Unable to allocate memory for interface."); | |
e00b005a | 189 | break; |
61515785 | 190 | } |
ef416fc2 | 191 | |
192 | /* | |
e00b005a | 193 | * Copy all of the information... |
ef416fc2 | 194 | */ |
195 | ||
196 | strlcpy(temp->name, addr->ifa_name, sizeof(temp->name)); | |
e07d4801 | 197 | temp->hostlen = hostlen; |
82cc1f9a | 198 | memcpy(temp->hostname, hostname, hostlen + 1); |
ef416fc2 | 199 | |
200 | if (addr->ifa_addr->sa_family == AF_INET) | |
201 | { | |
202 | /* | |
203 | * Copy IPv4 addresses... | |
204 | */ | |
205 | ||
206 | memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in)); | |
207 | memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in)); | |
208 | ||
209 | if (addr->ifa_dstaddr) | |
210 | memcpy(&(temp->broadcast), addr->ifa_dstaddr, | |
211 | sizeof(struct sockaddr_in)); | |
212 | } | |
213 | #ifdef AF_INET6 | |
214 | else | |
215 | { | |
216 | /* | |
217 | * Copy IPv6 addresses... | |
218 | */ | |
219 | ||
220 | memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in6)); | |
221 | memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in6)); | |
222 | ||
223 | if (addr->ifa_dstaddr) | |
224 | memcpy(&(temp->broadcast), addr->ifa_dstaddr, | |
225 | sizeof(struct sockaddr_in6)); | |
226 | } | |
227 | #endif /* AF_INET6 */ | |
228 | ||
229 | if (!(addr->ifa_flags & IFF_POINTOPOINT) && | |
230 | !httpAddrLocalhost(&(temp->address))) | |
231 | temp->is_local = 1; | |
232 | ||
233 | /* | |
234 | * Determine which port to use when advertising printers... | |
235 | */ | |
236 | ||
bd7854cb | 237 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
238 | lis; | |
239 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
ef416fc2 | 240 | { |
241 | match = 0; | |
242 | ||
243 | if (httpAddrAny(&(lis->address))) | |
244 | match = 1; | |
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 & | |
06d4e77b MS |
248 | temp->mask.ipv4.sin_addr.s_addr) == |
249 | (temp->address.ipv4.sin_addr.s_addr & | |
250 | temp->mask.ipv4.sin_addr.s_addr)) | |
ef416fc2 | 251 | match = 1; |
252 | #ifdef AF_INET6 | |
253 | else if (addr->ifa_addr->sa_family == AF_INET6 && | |
254 | lis->address.addr.sa_family == AF_INET6 && | |
255 | (lis->address.ipv6.sin6_addr.s6_addr[0] & | |
06d4e77b MS |
256 | temp->mask.ipv6.sin6_addr.s6_addr[0]) == |
257 | (temp->address.ipv6.sin6_addr.s6_addr[0] & | |
258 | temp->mask.ipv6.sin6_addr.s6_addr[0]) && | |
ef416fc2 | 259 | (lis->address.ipv6.sin6_addr.s6_addr[1] & |
06d4e77b MS |
260 | temp->mask.ipv6.sin6_addr.s6_addr[1]) == |
261 | (temp->address.ipv6.sin6_addr.s6_addr[1] & | |
262 | temp->mask.ipv6.sin6_addr.s6_addr[1]) && | |
ef416fc2 | 263 | (lis->address.ipv6.sin6_addr.s6_addr[2] & |
06d4e77b MS |
264 | temp->mask.ipv6.sin6_addr.s6_addr[2]) == |
265 | (temp->address.ipv6.sin6_addr.s6_addr[2] & | |
266 | temp->mask.ipv6.sin6_addr.s6_addr[2]) && | |
ef416fc2 | 267 | (lis->address.ipv6.sin6_addr.s6_addr[3] & |
06d4e77b MS |
268 | temp->mask.ipv6.sin6_addr.s6_addr[3]) == |
269 | (temp->address.ipv6.sin6_addr.s6_addr[3] & | |
270 | temp->mask.ipv6.sin6_addr.s6_addr[3])) | |
ef416fc2 | 271 | match = 1; |
272 | #endif /* AF_INET6 */ | |
273 | ||
274 | if (match) | |
275 | { | |
a469f8a5 | 276 | temp->port = httpAddrPort(&(lis->address)); |
ef416fc2 | 277 | break; |
278 | } | |
279 | } | |
280 | ||
281 | /* | |
e00b005a | 282 | * Add it to the array... |
ef416fc2 | 283 | */ |
284 | ||
e00b005a | 285 | cupsArrayAdd(NetIFList, temp); |
ef416fc2 | 286 | |
06d4e77b MS |
287 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: \"%s\" = %s:%d", |
288 | temp->name, temp->hostname, temp->port); | |
ef416fc2 | 289 | } |
290 | ||
291 | freeifaddrs(addrs); | |
292 | } | |
293 | ||
294 | ||
e00b005a | 295 | /* |
296 | * 'compare_netif()' - Compare two network interfaces. | |
297 | */ | |
298 | ||
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 */ | |
302 | { | |
303 | return (strcmp(a->name, b->name)); | |
304 | } | |
305 | ||
306 | ||
ef416fc2 | 307 | /* |
61515785 | 308 | * End of "$Id: network.c 11500 2014-01-06 22:21:15Z msweet $". |
ef416fc2 | 309 | */ |