]>
Commit | Line | Data |
---|---|---|
89d46774 | 1 | /* |
503b54c9 | 2 | * Network interface functions for CUPS. |
89d46774 | 3 | * |
53f8d64f MS |
4 | * Copyright © 2007-2010 by Apple Inc. |
5 | * Copyright © 1997-2006 by Easy Software Products, all rights reserved. | |
89d46774 | 6 | * |
53f8d64f MS |
7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more |
8 | * information. | |
89d46774 | 9 | */ |
10 | ||
11 | /* | |
12 | * Include necessary headers. | |
13 | */ | |
14 | ||
15 | #include "http-private.h" | |
16 | ||
17 | ||
18 | #ifndef HAVE_GETIFADDRS | |
19 | /* | |
20 | * '_cups_getifaddrs()' - Get a list of network interfaces on the system. | |
21 | */ | |
22 | ||
a74454a7 | 23 | int /* O - 0 on success, -1 on error */ |
89d46774 | 24 | _cups_getifaddrs(struct ifaddrs **addrs)/* O - List of interfaces */ |
25 | { | |
26 | int sock; /* Socket */ | |
27 | char buffer[65536], /* Buffer for address info */ | |
28 | *bufptr, /* Pointer into buffer */ | |
29 | *bufend; /* End of buffer */ | |
30 | struct ifconf conf; /* Interface configurations */ | |
31 | struct sockaddr addr; /* Address data */ | |
32 | struct ifreq *ifp; /* Interface data */ | |
33 | int ifpsize; /* Size of interface data */ | |
34 | struct ifaddrs *temp; /* Pointer to current interface */ | |
35 | struct ifreq request; /* Interface request */ | |
36 | ||
37 | ||
38 | /* | |
39 | * Start with an empty list... | |
40 | */ | |
41 | ||
42 | if (addrs == NULL) | |
43 | return (-1); | |
44 | ||
45 | *addrs = NULL; | |
46 | ||
47 | /* | |
48 | * Create a UDP socket to get the interface data... | |
49 | */ | |
50 | ||
51 | memset (&addr, 0, sizeof(addr)); | |
52 | if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) | |
53 | return (-1); | |
54 | ||
55 | /* | |
56 | * Try to get the list of interfaces... | |
57 | */ | |
58 | ||
59 | conf.ifc_len = sizeof(buffer); | |
60 | conf.ifc_buf = buffer; | |
61 | ||
62 | if (ioctl(sock, SIOCGIFCONF, &conf) < 0) | |
63 | { | |
64 | /* | |
65 | * Couldn't get the list of interfaces... | |
66 | */ | |
67 | ||
68 | close(sock); | |
69 | return (-1); | |
70 | } | |
71 | ||
72 | /* | |
73 | * OK, got the list of interfaces, now lets step through the | |
74 | * buffer to pull them out... | |
75 | */ | |
76 | ||
77 | # ifdef HAVE_STRUCT_SOCKADDR_SA_LEN | |
78 | # define sockaddr_len(a) ((a)->sa_len) | |
79 | # else | |
80 | # define sockaddr_len(a) (sizeof(struct sockaddr)) | |
81 | # endif /* HAVE_STRUCT_SOCKADDR_SA_LEN */ | |
82 | ||
83 | for (bufptr = buffer, bufend = buffer + conf.ifc_len; | |
84 | bufptr < bufend; | |
85 | bufptr += ifpsize) | |
86 | { | |
87 | /* | |
88 | * Get the current interface information... | |
89 | */ | |
90 | ||
91 | ifp = (struct ifreq *)bufptr; | |
92 | ifpsize = sizeof(ifp->ifr_name) + sockaddr_len(&(ifp->ifr_addr)); | |
93 | ||
94 | if (ifpsize < sizeof(struct ifreq)) | |
95 | ifpsize = sizeof(struct ifreq); | |
96 | ||
97 | memset(&request, 0, sizeof(request)); | |
98 | memcpy(request.ifr_name, ifp->ifr_name, sizeof(ifp->ifr_name)); | |
99 | ||
100 | /* | |
101 | * Check the status of the interface... | |
102 | */ | |
103 | ||
104 | if (ioctl(sock, SIOCGIFFLAGS, &request) < 0) | |
105 | continue; | |
106 | ||
107 | /* | |
108 | * Allocate memory for a single interface record... | |
109 | */ | |
110 | ||
111 | if ((temp = calloc(1, sizeof(struct ifaddrs))) == NULL) | |
112 | { | |
113 | /* | |
114 | * Unable to allocate memory... | |
115 | */ | |
116 | ||
117 | close(sock); | |
118 | return (-1); | |
119 | } | |
120 | ||
121 | /* | |
122 | * Add this record to the front of the list and copy the name, flags, | |
123 | * and network address... | |
124 | */ | |
125 | ||
126 | temp->ifa_next = *addrs; | |
127 | *addrs = temp; | |
128 | temp->ifa_name = strdup(ifp->ifr_name); | |
129 | temp->ifa_flags = request.ifr_flags; | |
130 | if ((temp->ifa_addr = calloc(1, sockaddr_len(&(ifp->ifr_addr)))) != NULL) | |
131 | memcpy(temp->ifa_addr, &(ifp->ifr_addr), sockaddr_len(&(ifp->ifr_addr))); | |
132 | ||
133 | /* | |
134 | * Try to get the netmask for the interface... | |
135 | */ | |
136 | ||
137 | if (!ioctl(sock, SIOCGIFNETMASK, &request)) | |
138 | { | |
139 | /* | |
140 | * Got it, make a copy... | |
141 | */ | |
142 | ||
143 | if ((temp->ifa_netmask = calloc(1, sizeof(request.ifr_netmask))) != NULL) | |
144 | memcpy(temp->ifa_netmask, &(request.ifr_netmask), | |
145 | sizeof(request.ifr_netmask)); | |
146 | } | |
147 | ||
148 | /* | |
149 | * Then get the broadcast or point-to-point (destination) address, | |
150 | * if applicable... | |
151 | */ | |
152 | ||
153 | if (temp->ifa_flags & IFF_BROADCAST) | |
154 | { | |
155 | /* | |
156 | * Have a broadcast address, so get it! | |
157 | */ | |
158 | ||
159 | if (!ioctl(sock, SIOCGIFBRDADDR, &request)) | |
160 | { | |
161 | /* | |
162 | * Got it, make a copy... | |
163 | */ | |
164 | ||
f301802f | 165 | if ((temp->ifa_broadaddr = |
166 | calloc(1, sizeof(request.ifr_broadaddr))) != NULL) | |
167 | memcpy(temp->ifa_broadaddr, &(request.ifr_broadaddr), | |
89d46774 | 168 | sizeof(request.ifr_broadaddr)); |
169 | } | |
170 | } | |
171 | else if (temp->ifa_flags & IFF_POINTOPOINT) | |
172 | { | |
173 | /* | |
174 | * Point-to-point interface; grab the remote address... | |
175 | */ | |
176 | ||
177 | if (!ioctl(sock, SIOCGIFDSTADDR, &request)) | |
178 | { | |
179 | temp->ifa_dstaddr = malloc(sizeof(request.ifr_dstaddr)); | |
180 | memcpy(temp->ifa_dstaddr, &(request.ifr_dstaddr), | |
181 | sizeof(request.ifr_dstaddr)); | |
182 | } | |
183 | } | |
184 | } | |
185 | ||
186 | /* | |
187 | * OK, we're done with the socket, close it and return 0... | |
188 | */ | |
189 | ||
190 | close(sock); | |
191 | ||
192 | return (0); | |
193 | } | |
194 | ||
195 | ||
196 | /* | |
197 | * '_cups_freeifaddrs()' - Free an interface list... | |
198 | */ | |
199 | ||
a74454a7 | 200 | void |
89d46774 | 201 | _cups_freeifaddrs(struct ifaddrs *addrs)/* I - Interface list to free */ |
202 | { | |
203 | struct ifaddrs *next; /* Next interface in list */ | |
204 | ||
205 | ||
206 | while (addrs != NULL) | |
207 | { | |
208 | /* | |
209 | * Make a copy of the next interface pointer... | |
210 | */ | |
211 | ||
212 | next = addrs->ifa_next; | |
213 | ||
214 | /* | |
215 | * Free data values as needed... | |
216 | */ | |
217 | ||
218 | if (addrs->ifa_name) | |
219 | { | |
220 | free(addrs->ifa_name); | |
221 | addrs->ifa_name = NULL; | |
222 | } | |
223 | ||
224 | if (addrs->ifa_addr) | |
225 | { | |
226 | free(addrs->ifa_addr); | |
227 | addrs->ifa_addr = NULL; | |
228 | } | |
229 | ||
230 | if (addrs->ifa_netmask) | |
231 | { | |
232 | free(addrs->ifa_netmask); | |
233 | addrs->ifa_netmask = NULL; | |
234 | } | |
235 | ||
236 | if (addrs->ifa_dstaddr) | |
237 | { | |
238 | free(addrs->ifa_dstaddr); | |
239 | addrs->ifa_dstaddr = NULL; | |
240 | } | |
241 | ||
242 | /* | |
243 | * Free this node and continue to the next... | |
244 | */ | |
245 | ||
246 | free(addrs); | |
247 | ||
248 | addrs = next; | |
249 | } | |
250 | } | |
251 | #endif /* !HAVE_GETIFADDRS */ |