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Commit | Line | Data |
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89d46774 | 1 | /* |
503b54c9 | 2 | * Network interface functions for CUPS. |
89d46774 | 3 | * |
503b54c9 MS |
4 | * Copyright 2007-2010 by Apple Inc. |
5 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. | |
89d46774 | 6 | * |
503b54c9 MS |
7 | * These coded instructions, statements, and computer programs are the |
8 | * property of Apple Inc. and are protected by Federal copyright | |
9 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
10 | * "LICENSE" which should have been included with this file. If this | |
11 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
89d46774 | 12 | */ |
13 | ||
14 | /* | |
15 | * Include necessary headers. | |
16 | */ | |
17 | ||
18 | #include "http-private.h" | |
19 | ||
20 | ||
21 | #ifndef HAVE_GETIFADDRS | |
22 | /* | |
23 | * '_cups_getifaddrs()' - Get a list of network interfaces on the system. | |
24 | */ | |
25 | ||
a74454a7 | 26 | int /* O - 0 on success, -1 on error */ |
89d46774 | 27 | _cups_getifaddrs(struct ifaddrs **addrs)/* O - List of interfaces */ |
28 | { | |
29 | int sock; /* Socket */ | |
30 | char buffer[65536], /* Buffer for address info */ | |
31 | *bufptr, /* Pointer into buffer */ | |
32 | *bufend; /* End of buffer */ | |
33 | struct ifconf conf; /* Interface configurations */ | |
34 | struct sockaddr addr; /* Address data */ | |
35 | struct ifreq *ifp; /* Interface data */ | |
36 | int ifpsize; /* Size of interface data */ | |
37 | struct ifaddrs *temp; /* Pointer to current interface */ | |
38 | struct ifreq request; /* Interface request */ | |
39 | ||
40 | ||
41 | /* | |
42 | * Start with an empty list... | |
43 | */ | |
44 | ||
45 | if (addrs == NULL) | |
46 | return (-1); | |
47 | ||
48 | *addrs = NULL; | |
49 | ||
50 | /* | |
51 | * Create a UDP socket to get the interface data... | |
52 | */ | |
53 | ||
54 | memset (&addr, 0, sizeof(addr)); | |
55 | if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) | |
56 | return (-1); | |
57 | ||
58 | /* | |
59 | * Try to get the list of interfaces... | |
60 | */ | |
61 | ||
62 | conf.ifc_len = sizeof(buffer); | |
63 | conf.ifc_buf = buffer; | |
64 | ||
65 | if (ioctl(sock, SIOCGIFCONF, &conf) < 0) | |
66 | { | |
67 | /* | |
68 | * Couldn't get the list of interfaces... | |
69 | */ | |
70 | ||
71 | close(sock); | |
72 | return (-1); | |
73 | } | |
74 | ||
75 | /* | |
76 | * OK, got the list of interfaces, now lets step through the | |
77 | * buffer to pull them out... | |
78 | */ | |
79 | ||
80 | # ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
81 | # define sockaddr_len(a) ((a)->sa_len) | |
82 | # else | |
83 | # define sockaddr_len(a) (sizeof(struct sockaddr)) | |
84 | # endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
85 | ||
86 | for (bufptr = buffer, bufend = buffer + conf.ifc_len; | |
87 | bufptr < bufend; | |
88 | bufptr += ifpsize) | |
89 | { | |
90 | /* | |
91 | * Get the current interface information... | |
92 | */ | |
93 | ||
94 | ifp = (struct ifreq *)bufptr; | |
95 | ifpsize = sizeof(ifp->ifr_name) + sockaddr_len(&(ifp->ifr_addr)); | |
96 | ||
97 | if (ifpsize < sizeof(struct ifreq)) | |
98 | ifpsize = sizeof(struct ifreq); | |
99 | ||
100 | memset(&request, 0, sizeof(request)); | |
101 | memcpy(request.ifr_name, ifp->ifr_name, sizeof(ifp->ifr_name)); | |
102 | ||
103 | /* | |
104 | * Check the status of the interface... | |
105 | */ | |
106 | ||
107 | if (ioctl(sock, SIOCGIFFLAGS, &request) < 0) | |
108 | continue; | |
109 | ||
110 | /* | |
111 | * Allocate memory for a single interface record... | |
112 | */ | |
113 | ||
114 | if ((temp = calloc(1, sizeof(struct ifaddrs))) == NULL) | |
115 | { | |
116 | /* | |
117 | * Unable to allocate memory... | |
118 | */ | |
119 | ||
120 | close(sock); | |
121 | return (-1); | |
122 | } | |
123 | ||
124 | /* | |
125 | * Add this record to the front of the list and copy the name, flags, | |
126 | * and network address... | |
127 | */ | |
128 | ||
129 | temp->ifa_next = *addrs; | |
130 | *addrs = temp; | |
131 | temp->ifa_name = strdup(ifp->ifr_name); | |
132 | temp->ifa_flags = request.ifr_flags; | |
133 | if ((temp->ifa_addr = calloc(1, sockaddr_len(&(ifp->ifr_addr)))) != NULL) | |
134 | memcpy(temp->ifa_addr, &(ifp->ifr_addr), sockaddr_len(&(ifp->ifr_addr))); | |
135 | ||
136 | /* | |
137 | * Try to get the netmask for the interface... | |
138 | */ | |
139 | ||
140 | if (!ioctl(sock, SIOCGIFNETMASK, &request)) | |
141 | { | |
142 | /* | |
143 | * Got it, make a copy... | |
144 | */ | |
145 | ||
146 | if ((temp->ifa_netmask = calloc(1, sizeof(request.ifr_netmask))) != NULL) | |
147 | memcpy(temp->ifa_netmask, &(request.ifr_netmask), | |
148 | sizeof(request.ifr_netmask)); | |
149 | } | |
150 | ||
151 | /* | |
152 | * Then get the broadcast or point-to-point (destination) address, | |
153 | * if applicable... | |
154 | */ | |
155 | ||
156 | if (temp->ifa_flags & IFF_BROADCAST) | |
157 | { | |
158 | /* | |
159 | * Have a broadcast address, so get it! | |
160 | */ | |
161 | ||
162 | if (!ioctl(sock, SIOCGIFBRDADDR, &request)) | |
163 | { | |
164 | /* | |
165 | * Got it, make a copy... | |
166 | */ | |
167 | ||
f301802f | 168 | if ((temp->ifa_broadaddr = |
169 | calloc(1, sizeof(request.ifr_broadaddr))) != NULL) | |
170 | memcpy(temp->ifa_broadaddr, &(request.ifr_broadaddr), | |
89d46774 | 171 | sizeof(request.ifr_broadaddr)); |
172 | } | |
173 | } | |
174 | else if (temp->ifa_flags & IFF_POINTOPOINT) | |
175 | { | |
176 | /* | |
177 | * Point-to-point interface; grab the remote address... | |
178 | */ | |
179 | ||
180 | if (!ioctl(sock, SIOCGIFDSTADDR, &request)) | |
181 | { | |
182 | temp->ifa_dstaddr = malloc(sizeof(request.ifr_dstaddr)); | |
183 | memcpy(temp->ifa_dstaddr, &(request.ifr_dstaddr), | |
184 | sizeof(request.ifr_dstaddr)); | |
185 | } | |
186 | } | |
187 | } | |
188 | ||
189 | /* | |
190 | * OK, we're done with the socket, close it and return 0... | |
191 | */ | |
192 | ||
193 | close(sock); | |
194 | ||
195 | return (0); | |
196 | } | |
197 | ||
198 | ||
199 | /* | |
200 | * '_cups_freeifaddrs()' - Free an interface list... | |
201 | */ | |
202 | ||
a74454a7 | 203 | void |
89d46774 | 204 | _cups_freeifaddrs(struct ifaddrs *addrs)/* I - Interface list to free */ |
205 | { | |
206 | struct ifaddrs *next; /* Next interface in list */ | |
207 | ||
208 | ||
209 | while (addrs != NULL) | |
210 | { | |
211 | /* | |
212 | * Make a copy of the next interface pointer... | |
213 | */ | |
214 | ||
215 | next = addrs->ifa_next; | |
216 | ||
217 | /* | |
218 | * Free data values as needed... | |
219 | */ | |
220 | ||
221 | if (addrs->ifa_name) | |
222 | { | |
223 | free(addrs->ifa_name); | |
224 | addrs->ifa_name = NULL; | |
225 | } | |
226 | ||
227 | if (addrs->ifa_addr) | |
228 | { | |
229 | free(addrs->ifa_addr); | |
230 | addrs->ifa_addr = NULL; | |
231 | } | |
232 | ||
233 | if (addrs->ifa_netmask) | |
234 | { | |
235 | free(addrs->ifa_netmask); | |
236 | addrs->ifa_netmask = NULL; | |
237 | } | |
238 | ||
239 | if (addrs->ifa_dstaddr) | |
240 | { | |
241 | free(addrs->ifa_dstaddr); | |
242 | addrs->ifa_dstaddr = NULL; | |
243 | } | |
244 | ||
245 | /* | |
246 | * Free this node and continue to the next... | |
247 | */ | |
248 | ||
249 | free(addrs); | |
250 | ||
251 | addrs = next; | |
252 | } | |
253 | } | |
254 | #endif /* !HAVE_GETIFADDRS */ |