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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: network.c 7861 2008-08-26 03:15:14Z mike $" |
ef416fc2 | 3 | * |
4 | * Network interface functions for the Common UNIX Printing System | |
5 | * (CUPS) scheduler. | |
6 | * | |
d1c13e16 | 7 | * Copyright 2007-2009 by Apple Inc. |
e00b005a | 8 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 9 | * |
10 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 11 | * property of Apple Inc. and are protected by Federal copyright |
12 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
ef416fc2 | 13 | * "LICENSE" which should have been included with this file. If this |
bc44d920 | 14 | * file is missing or damaged, see the license at "http://www.cups.org/". |
ef416fc2 | 15 | * |
16 | * Contents: | |
17 | * | |
18 | * cupsdNetIFFind() - Find a network interface. | |
19 | * cupsdNetIFFree() - Free the current network interface list. | |
20 | * cupsdNetIFUpdate() - Update the network interface list as needed... | |
e00b005a | 21 | * compare_netif() - Compare two network interfaces. |
ef416fc2 | 22 | */ |
23 | ||
24 | /* | |
25 | * Include necessary headers. | |
26 | */ | |
27 | ||
89d46774 | 28 | #include <cups/http-private.h> |
ef416fc2 | 29 | #include "cupsd.h" |
30 | ||
e00b005a | 31 | |
32 | /* | |
33 | * Local functions... | |
34 | */ | |
35 | ||
36 | static void cupsdNetIFFree(void); | |
37 | static int compare_netif(cupsd_netif_t *a, cupsd_netif_t *b); | |
38 | ||
39 | ||
ef416fc2 | 40 | /* |
41 | * 'cupsdNetIFFind()' - Find a network interface. | |
42 | */ | |
43 | ||
44 | cupsd_netif_t * /* O - Network interface data */ | |
45 | cupsdNetIFFind(const char *name) /* I - Name of interface */ | |
46 | { | |
e00b005a | 47 | cupsd_netif_t key; /* Search key */ |
ef416fc2 | 48 | |
49 | ||
50 | /* | |
51 | * Update the interface list as needed... | |
52 | */ | |
53 | ||
411affcf | 54 | if (NetIFUpdate) |
55 | cupsdNetIFUpdate(); | |
ef416fc2 | 56 | |
57 | /* | |
58 | * Search for the named interface... | |
59 | */ | |
60 | ||
e00b005a | 61 | strlcpy(key.name, name, sizeof(key.name)); |
ef416fc2 | 62 | |
e00b005a | 63 | return ((cupsd_netif_t *)cupsArrayFind(NetIFList, &key)); |
ef416fc2 | 64 | } |
65 | ||
66 | ||
67 | /* | |
68 | * 'cupsdNetIFFree()' - Free the current network interface list. | |
69 | */ | |
70 | ||
e00b005a | 71 | static void |
ef416fc2 | 72 | cupsdNetIFFree(void) |
73 | { | |
e00b005a | 74 | cupsd_netif_t *current; /* Current interface in array */ |
ef416fc2 | 75 | |
76 | ||
77 | /* | |
78 | * Loop through the interface list and free all the records... | |
79 | */ | |
80 | ||
e00b005a | 81 | for (current = (cupsd_netif_t *)cupsArrayFirst(NetIFList); |
82 | current; | |
83 | current = (cupsd_netif_t *)cupsArrayNext(NetIFList)) | |
ef416fc2 | 84 | { |
e00b005a | 85 | cupsArrayRemove(NetIFList, current); |
86 | free(current); | |
ef416fc2 | 87 | } |
88 | } | |
89 | ||
90 | ||
91 | /* | |
92 | * 'cupsdNetIFUpdate()' - Update the network interface list as needed... | |
93 | */ | |
94 | ||
95 | void | |
96 | cupsdNetIFUpdate(void) | |
97 | { | |
bd7854cb | 98 | int match; /* Matching address? */ |
ef416fc2 | 99 | cupsd_listener_t *lis; /* Listen address */ |
e00b005a | 100 | cupsd_netif_t *temp; /* New interface */ |
ef416fc2 | 101 | struct ifaddrs *addrs, /* Interface address list */ |
102 | *addr; /* Current interface address */ | |
e00b005a | 103 | char hostname[1024]; /* Hostname for address */ |
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) | |
136 | return; | |
137 | ||
138 | for (addr = addrs; addr != NULL; addr = addr->ifa_next) | |
139 | { | |
140 | /* | |
141 | * See if this interface address is IPv4 or IPv6... | |
142 | */ | |
143 | ||
144 | if (addr->ifa_addr == NULL || | |
145 | (addr->ifa_addr->sa_family != AF_INET | |
146 | #ifdef AF_INET6 | |
147 | && addr->ifa_addr->sa_family != AF_INET6 | |
148 | #endif | |
149 | ) || | |
150 | addr->ifa_netmask == NULL || addr->ifa_name == NULL) | |
151 | continue; | |
152 | ||
153 | /* | |
e00b005a | 154 | * Try looking up the hostname for the address as needed... |
ef416fc2 | 155 | */ |
156 | ||
d1c13e16 | 157 | if (HostNameLookups || RemoteAccessEnabled) |
e00b005a | 158 | httpAddrLookup((http_addr_t *)(addr->ifa_addr), hostname, |
159 | sizeof(hostname)); | |
160 | else | |
161 | { | |
162 | /* | |
163 | * Map the default server address and localhost to the server name | |
164 | * and localhost, respectively; for all other addresses, use the | |
165 | * dotted notation... | |
166 | */ | |
ef416fc2 | 167 | |
e00b005a | 168 | if (httpAddrLocalhost((http_addr_t *)(addr->ifa_addr))) |
169 | strcpy(hostname, "localhost"); | |
170 | else | |
d1c13e16 MS |
171 | httpAddrString((http_addr_t *)(addr->ifa_addr), hostname, |
172 | sizeof(hostname)); | |
e00b005a | 173 | } |
ef416fc2 | 174 | |
e00b005a | 175 | /* |
176 | * Create a new address element... | |
177 | */ | |
ef416fc2 | 178 | |
e00b005a | 179 | if ((temp = calloc(1, sizeof(cupsd_netif_t) + |
180 | strlen(hostname))) == NULL) | |
181 | break; | |
ef416fc2 | 182 | |
183 | /* | |
e00b005a | 184 | * Copy all of the information... |
ef416fc2 | 185 | */ |
186 | ||
187 | strlcpy(temp->name, addr->ifa_name, sizeof(temp->name)); | |
e00b005a | 188 | strcpy(temp->hostname, hostname); /* Safe because hostname is allocated */ |
ef416fc2 | 189 | |
190 | if (addr->ifa_addr->sa_family == AF_INET) | |
191 | { | |
192 | /* | |
193 | * Copy IPv4 addresses... | |
194 | */ | |
195 | ||
196 | memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in)); | |
197 | memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in)); | |
198 | ||
199 | if (addr->ifa_dstaddr) | |
200 | memcpy(&(temp->broadcast), addr->ifa_dstaddr, | |
201 | sizeof(struct sockaddr_in)); | |
202 | } | |
203 | #ifdef AF_INET6 | |
204 | else | |
205 | { | |
206 | /* | |
207 | * Copy IPv6 addresses... | |
208 | */ | |
209 | ||
210 | memcpy(&(temp->address), addr->ifa_addr, sizeof(struct sockaddr_in6)); | |
211 | memcpy(&(temp->mask), addr->ifa_netmask, sizeof(struct sockaddr_in6)); | |
212 | ||
213 | if (addr->ifa_dstaddr) | |
214 | memcpy(&(temp->broadcast), addr->ifa_dstaddr, | |
215 | sizeof(struct sockaddr_in6)); | |
216 | } | |
217 | #endif /* AF_INET6 */ | |
218 | ||
219 | if (!(addr->ifa_flags & IFF_POINTOPOINT) && | |
220 | !httpAddrLocalhost(&(temp->address))) | |
221 | temp->is_local = 1; | |
222 | ||
223 | /* | |
224 | * Determine which port to use when advertising printers... | |
225 | */ | |
226 | ||
bd7854cb | 227 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
228 | lis; | |
229 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
ef416fc2 | 230 | { |
231 | match = 0; | |
232 | ||
233 | if (httpAddrAny(&(lis->address))) | |
234 | match = 1; | |
235 | else if (addr->ifa_addr->sa_family == AF_INET && | |
236 | lis->address.addr.sa_family == AF_INET && | |
237 | (lis->address.ipv4.sin_addr.s_addr & | |
06d4e77b MS |
238 | temp->mask.ipv4.sin_addr.s_addr) == |
239 | (temp->address.ipv4.sin_addr.s_addr & | |
240 | temp->mask.ipv4.sin_addr.s_addr)) | |
ef416fc2 | 241 | match = 1; |
242 | #ifdef AF_INET6 | |
243 | else if (addr->ifa_addr->sa_family == AF_INET6 && | |
244 | lis->address.addr.sa_family == AF_INET6 && | |
245 | (lis->address.ipv6.sin6_addr.s6_addr[0] & | |
06d4e77b MS |
246 | temp->mask.ipv6.sin6_addr.s6_addr[0]) == |
247 | (temp->address.ipv6.sin6_addr.s6_addr[0] & | |
248 | temp->mask.ipv6.sin6_addr.s6_addr[0]) && | |
ef416fc2 | 249 | (lis->address.ipv6.sin6_addr.s6_addr[1] & |
06d4e77b MS |
250 | temp->mask.ipv6.sin6_addr.s6_addr[1]) == |
251 | (temp->address.ipv6.sin6_addr.s6_addr[1] & | |
252 | temp->mask.ipv6.sin6_addr.s6_addr[1]) && | |
ef416fc2 | 253 | (lis->address.ipv6.sin6_addr.s6_addr[2] & |
06d4e77b MS |
254 | temp->mask.ipv6.sin6_addr.s6_addr[2]) == |
255 | (temp->address.ipv6.sin6_addr.s6_addr[2] & | |
256 | temp->mask.ipv6.sin6_addr.s6_addr[2]) && | |
ef416fc2 | 257 | (lis->address.ipv6.sin6_addr.s6_addr[3] & |
06d4e77b MS |
258 | temp->mask.ipv6.sin6_addr.s6_addr[3]) == |
259 | (temp->address.ipv6.sin6_addr.s6_addr[3] & | |
260 | temp->mask.ipv6.sin6_addr.s6_addr[3])) | |
ef416fc2 | 261 | match = 1; |
262 | #endif /* AF_INET6 */ | |
263 | ||
264 | if (match) | |
265 | { | |
266 | if (lis->address.addr.sa_family == AF_INET) | |
267 | temp->port = ntohs(lis->address.ipv4.sin_port); | |
268 | #ifdef AF_INET6 | |
269 | else if (lis->address.addr.sa_family == AF_INET6) | |
270 | temp->port = ntohs(lis->address.ipv6.sin6_port); | |
271 | #endif /* AF_INET6 */ | |
272 | break; | |
273 | } | |
274 | } | |
275 | ||
276 | /* | |
e00b005a | 277 | * Add it to the array... |
ef416fc2 | 278 | */ |
279 | ||
e00b005a | 280 | cupsArrayAdd(NetIFList, temp); |
ef416fc2 | 281 | |
06d4e77b MS |
282 | cupsdLogMessage(CUPSD_LOG_DEBUG, "cupsdNetIFUpdate: \"%s\" = %s:%d", |
283 | temp->name, temp->hostname, temp->port); | |
ef416fc2 | 284 | } |
285 | ||
286 | freeifaddrs(addrs); | |
287 | } | |
288 | ||
289 | ||
e00b005a | 290 | /* |
291 | * 'compare_netif()' - Compare two network interfaces. | |
292 | */ | |
293 | ||
294 | static int /* O - Result of comparison */ | |
295 | compare_netif(cupsd_netif_t *a, /* I - First network interface */ | |
296 | cupsd_netif_t *b) /* I - Second network interface */ | |
297 | { | |
298 | return (strcmp(a->name, b->name)); | |
299 | } | |
300 | ||
301 | ||
ef416fc2 | 302 | /* |
b19ccc9e | 303 | * End of "$Id: network.c 7861 2008-08-26 03:15:14Z mike $". |
ef416fc2 | 304 | */ |