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2123c23a | 1 | /* |
c9d3f842 | 2 | * "$Id$" |
2123c23a | 3 | * |
4 | * Network interface functions for the Common UNIX Printing System | |
5 | * (CUPS) scheduler. | |
6 | * | |
71fe79e8 | 7 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
2123c23a | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
10 | * property of Easy Software Products and are protected by Federal | |
11 | * copyright law. Distribution and use rights are outlined in the file | |
12 | * "LICENSE" which should have been included with this file. If this | |
13 | * file is missing or damaged please contact Easy Software Products | |
14 | * at: | |
15 | * | |
16 | * Attn: CUPS Licensing Information | |
17 | * Easy Software Products | |
18 | * 44141 Airport View Drive, Suite 204 | |
8650fcf2 | 19 | * Hollywood, Maryland 20636 USA |
2123c23a | 20 | * |
edfd3c3d | 21 | * Voice: (301) 373-9600 |
2123c23a | 22 | * EMail: cups-info@cups.org |
23 | * WWW: http://www.cups.org | |
f3e786fc | 24 | * |
25 | * Contents: | |
26 | * | |
27 | * cupsdNetIFFind() - Find a network interface. | |
28 | * cupsdNetIFFree() - Free the current network interface list. | |
29 | * cupsdNetIFUpdate() - Update the network interface list as needed... | |
71fe79e8 | 30 | * compare_netif() - Compare two network interfaces. |
2123c23a | 31 | */ |
32 | ||
33 | /* | |
34 | * Include necessary headers. | |
35 | */ | |
36 | ||
846f45a0 | 37 | #include <cups/http-private.h> |
2123c23a | 38 | #include "cupsd.h" |
39 | ||
71fe79e8 | 40 | |
41 | /* | |
42 | * Local functions... | |
43 | */ | |
44 | ||
45 | static void cupsdNetIFFree(void); | |
46 | static int compare_netif(cupsd_netif_t *a, cupsd_netif_t *b); | |
47 | ||
48 | ||
2123c23a | 49 | /* |
f3e786fc | 50 | * 'cupsdNetIFFind()' - Find a network interface. |
2123c23a | 51 | */ |
52 | ||
f3e786fc | 53 | cupsd_netif_t * /* O - Network interface data */ |
54 | cupsdNetIFFind(const char *name) /* I - Name of interface */ | |
2123c23a | 55 | { |
71fe79e8 | 56 | cupsd_netif_t key; /* Search key */ |
2123c23a | 57 | |
58 | ||
59 | /* | |
60 | * Update the interface list as needed... | |
61 | */ | |
62 | ||
87c85a78 | 63 | if (NetIFUpdate) |
64 | cupsdNetIFUpdate(); | |
2123c23a | 65 | |
66 | /* | |
67 | * Search for the named interface... | |
68 | */ | |
69 | ||
71fe79e8 | 70 | strlcpy(key.name, name, sizeof(key.name)); |
2123c23a | 71 | |
71fe79e8 | 72 | return ((cupsd_netif_t *)cupsArrayFind(NetIFList, &key)); |
2123c23a | 73 | } |
74 | ||
75 | ||
76 | /* | |
589eb420 | 77 | * 'cupsdNetIFFree()' - Free the current network interface list. |
2123c23a | 78 | */ |
79 | ||
71fe79e8 | 80 | static void |
589eb420 | 81 | cupsdNetIFFree(void) |
2123c23a | 82 | { |
71fe79e8 | 83 | cupsd_netif_t *current; /* Current interface in array */ |
2123c23a | 84 | |
85 | ||
86 | /* | |
87 | * Loop through the interface list and free all the records... | |
88 | */ | |
89 | ||
71fe79e8 | 90 | for (current = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
91 | current; | |
92 | current = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
2123c23a | 93 | { |
71fe79e8 | 94 | cupsArrayRemove(NetIFList, current); |
95 | free(current); | |
2123c23a | 96 | } |
97 | } | |
98 | ||
99 | ||
100 | /* | |
589eb420 | 101 | * 'cupsdNetIFUpdate()' - Update the network interface list as needed... |
2123c23a | 102 | */ |
103 | ||
104 | void | |
589eb420 | 105 | cupsdNetIFUpdate(void) |
2123c23a | 106 | { |
c7445b9f | 107 | int match; /* Matching address? */ |
589eb420 | 108 | cupsd_listener_t *lis; /* Listen address */ |
71fe79e8 | 109 | cupsd_netif_t *temp; /* New interface */ |
f3e786fc | 110 | struct ifaddrs *addrs, /* Interface address list */ |
111 | *addr; /* Current interface address */ | |
086c584d | 112 | http_addrlist_t *saddr; /* Current server address */ |
71fe79e8 | 113 | char hostname[1024]; /* Hostname for address */ |
2123c23a | 114 | |
115 | ||
116 | /* | |
87c85a78 | 117 | * Only update the list if we need to... |
2123c23a | 118 | */ |
119 | ||
87c85a78 | 120 | if (!NetIFUpdate) |
2123c23a | 121 | return; |
122 | ||
87c85a78 | 123 | NetIFUpdate = 0; |
5fe35f41 | 124 | |
2123c23a | 125 | /* |
126 | * Free the old interfaces... | |
127 | */ | |
128 | ||
589eb420 | 129 | cupsdNetIFFree(); |
2123c23a | 130 | |
71fe79e8 | 131 | /* |
132 | * Make sure we have an array... | |
133 | */ | |
134 | ||
135 | if (!NetIFList) | |
136 | NetIFList = cupsArrayNew((cups_array_func_t)compare_netif, NULL); | |
137 | ||
138 | if (!NetIFList) | |
139 | return; | |
140 | ||
2123c23a | 141 | /* |
142 | * Grab a new list of interfaces... | |
143 | */ | |
144 | ||
145 | if (getifaddrs(&addrs) < 0) | |
146 | return; | |
147 | ||
148 | for (addr = addrs; addr != NULL; addr = addr->ifa_next) | |
149 | { | |
150 | /* | |
20264b99 | 151 | * See if this interface address is IPv4 or IPv6... |
2123c23a | 152 | */ |
153 | ||
20264b99 | 154 | if (addr->ifa_addr == NULL || |
a09840c5 | 155 | (addr->ifa_addr->sa_family != AF_INET |
156 | #ifdef AF_INET6 | |
157 | && addr->ifa_addr->sa_family != AF_INET6 | |
158 | #endif | |
159 | ) || | |
2123c23a | 160 | addr->ifa_netmask == NULL || addr->ifa_name == NULL) |
161 | continue; | |
162 | ||
163 | /* | |
71fe79e8 | 164 | * Try looking up the hostname for the address as needed... |
2123c23a | 165 | */ |
166 | ||
71fe79e8 | 167 | if (HostNameLookups) |
168 | httpAddrLookup((http_addr_t *)(addr->ifa_addr), hostname, | |
169 | sizeof(hostname)); | |
170 | else | |
171 | { | |
172 | /* | |
173 | * Map the default server address and localhost to the server name | |
174 | * and localhost, respectively; for all other addresses, use the | |
175 | * dotted notation... | |
176 | */ | |
2123c23a | 177 | |
71fe79e8 | 178 | if (httpAddrLocalhost((http_addr_t *)(addr->ifa_addr))) |
179 | strcpy(hostname, "localhost"); | |
180 | else | |
181 | { | |
182 | for (saddr = ServerAddrs; saddr; saddr = saddr->next) | |
183 | if (httpAddrEqual((http_addr_t *)(addr->ifa_addr), &(saddr->addr))) | |
184 | break; | |
7776142f | 185 | |
71fe79e8 | 186 | if (saddr) |
187 | strlcpy(hostname, ServerName, sizeof(hostname)); | |
188 | else | |
189 | httpAddrString((http_addr_t *)(addr->ifa_addr), hostname, | |
190 | sizeof(hostname)); | |
191 | } | |
192 | } | |
7776142f | 193 | |
71fe79e8 | 194 | /* |
195 | * Create a new address element... | |
196 | */ | |
7776142f | 197 | |
71fe79e8 | 198 | if ((temp = calloc(1, sizeof(cupsd_netif_t) + |
199 | strlen(hostname))) == NULL) | |
200 | break; | |
2123c23a | 201 | |
202 | /* | |
71fe79e8 | 203 | * Copy all of the information... |
2123c23a | 204 | */ |
205 | ||
def978d5 | 206 | strlcpy(temp->name, addr->ifa_name, sizeof(temp->name)); |
71fe79e8 | 207 | strcpy(temp->hostname, hostname); /* Safe because hostname is allocated */ |
2123c23a | 208 | |
20264b99 | 209 | if (addr->ifa_addr->sa_family == AF_INET) |
210 | { | |
211 | /* | |
212 | * Copy IPv4 addresses... | |
213 | */ | |
214 | ||
215 | memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in)); | |
216 | memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in)); | |
217 | ||
218 | if (addr->ifa_dstaddr) | |
f3e786fc | 219 | memcpy(&(temp->broadcast), addr->ifa_dstaddr, |
220 | sizeof(struct sockaddr_in)); | |
20264b99 | 221 | } |
a09840c5 | 222 | #ifdef AF_INET6 |
20264b99 | 223 | else |
224 | { | |
225 | /* | |
226 | * Copy IPv6 addresses... | |
227 | */ | |
228 | ||
229 | memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in6)); | |
230 | memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in6)); | |
231 | ||
232 | if (addr->ifa_dstaddr) | |
f3e786fc | 233 | memcpy(&(temp->broadcast), addr->ifa_dstaddr, |
234 | sizeof(struct sockaddr_in6)); | |
20264b99 | 235 | } |
a09840c5 | 236 | #endif /* AF_INET6 */ |
2123c23a | 237 | |
d7a9de63 | 238 | if (!(addr->ifa_flags & IFF_POINTOPOINT) && |
239 | !httpAddrLocalhost(&(temp->address))) | |
2123c23a | 240 | temp->is_local = 1; |
241 | ||
edd6ee99 | 242 | /* |
243 | * Determine which port to use when advertising printers... | |
244 | */ | |
245 | ||
c7445b9f | 246 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
247 | lis; | |
248 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
edd6ee99 | 249 | { |
250 | match = 0; | |
251 | ||
252 | if (httpAddrAny(&(lis->address))) | |
253 | match = 1; | |
254 | else if (addr->ifa_addr->sa_family == AF_INET && | |
255 | lis->address.addr.sa_family == AF_INET && | |
256 | (lis->address.ipv4.sin_addr.s_addr & | |
257 | temp->mask.ipv4.sin_addr.s_addr) == | |
258 | temp->address.ipv4.sin_addr.s_addr) | |
259 | match = 1; | |
260 | #ifdef AF_INET6 | |
261 | else if (addr->ifa_addr->sa_family == AF_INET6 && | |
262 | lis->address.addr.sa_family == AF_INET6 && | |
263 | (lis->address.ipv6.sin6_addr.s6_addr[0] & | |
264 | temp->mask.ipv6.sin6_addr.s6_addr[0]) == | |
265 | temp->address.ipv6.sin6_addr.s6_addr[0] && | |
266 | (lis->address.ipv6.sin6_addr.s6_addr[1] & | |
267 | temp->mask.ipv6.sin6_addr.s6_addr[1]) == | |
268 | temp->address.ipv6.sin6_addr.s6_addr[1] && | |
269 | (lis->address.ipv6.sin6_addr.s6_addr[2] & | |
270 | temp->mask.ipv6.sin6_addr.s6_addr[2]) == | |
271 | temp->address.ipv6.sin6_addr.s6_addr[2] && | |
272 | (lis->address.ipv6.sin6_addr.s6_addr[3] & | |
273 | temp->mask.ipv6.sin6_addr.s6_addr[3]) == | |
274 | temp->address.ipv6.sin6_addr.s6_addr[3]) | |
275 | match = 1; | |
276 | #endif /* AF_INET6 */ | |
277 | ||
278 | if (match) | |
279 | { | |
280 | if (lis->address.addr.sa_family == AF_INET) | |
281 | temp->port = ntohs(lis->address.ipv4.sin_port); | |
282 | #ifdef AF_INET6 | |
283 | else if (lis->address.addr.sa_family == AF_INET6) | |
284 | temp->port = ntohs(lis->address.ipv6.sin6_port); | |
285 | #endif /* AF_INET6 */ | |
286 | break; | |
287 | } | |
288 | } | |
289 | ||
2123c23a | 290 | /* |
71fe79e8 | 291 | * Add it to the array... |
2123c23a | 292 | */ |
293 | ||
71fe79e8 | 294 | cupsArrayAdd(NetIFList, temp); |
40e67cda | 295 | |
296 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: \"%s\" = %s...", | |
297 | temp->name, temp->hostname); | |
2123c23a | 298 | } |
299 | ||
300 | freeifaddrs(addrs); | |
301 | } | |
302 | ||
303 | ||
71fe79e8 | 304 | /* |
305 | * 'compare_netif()' - Compare two network interfaces. | |
306 | */ | |
307 | ||
308 | static int /* O - Result of comparison */ | |
309 | compare_netif(cupsd_netif_t *a, /* I - First network interface */ | |
310 | cupsd_netif_t *b) /* I - Second network interface */ | |
311 | { | |
312 | return (strcmp(a->name, b->name)); | |
313 | } | |
314 | ||
315 | ||
2123c23a | 316 | /* |
c9d3f842 | 317 | * End of "$Id$". |
2123c23a | 318 | */ |