iface.c (78410) | iface.c (81634) |
---|---|
1/*- 2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
26 * $FreeBSD: head/usr.sbin/ppp/iface.c 78410 2001-06-18 14:59:36Z brian $ | 26 * $FreeBSD: head/usr.sbin/ppp/iface.c 81634 2001-08-14 16:05:52Z brian $ |
27 */ 28 29#include <sys/param.h> 30#include <sys/socket.h> 31#include <netinet/in.h> 32#include <net/if.h> 33#include <net/if_dl.h> | 27 */ 28 29#include <sys/param.h> 30#include <sys/socket.h> 31#include <netinet/in.h> 32#include <net/if.h> 33#include <net/if_dl.h> |
34#include <net/if_var.h> |
|
34#include <net/route.h> 35#include <arpa/inet.h> 36#include <netinet/in_systm.h> | 35#include <net/route.h> 36#include <arpa/inet.h> 37#include <netinet/in_systm.h> |
38#include <netinet/in_var.h> |
|
37#include <netinet/ip.h> | 39#include <netinet/ip.h> |
40#ifndef NOINET6 41#include <netinet6/nd6.h> 42#endif |
|
38#include <sys/un.h> 39 40#include <errno.h> 41#include <string.h> 42#include <stdio.h> 43#include <stdlib.h> 44#include <sys/ioctl.h> 45#include <sys/sysctl.h> --- 9 unchanged lines hidden (view full) --- 55#include "timer.h" 56#include "fsm.h" 57#include "iplist.h" 58#include "lqr.h" 59#include "hdlc.h" 60#include "throughput.h" 61#include "slcompress.h" 62#include "descriptor.h" | 43#include <sys/un.h> 44 45#include <errno.h> 46#include <string.h> 47#include <stdio.h> 48#include <stdlib.h> 49#include <sys/ioctl.h> 50#include <sys/sysctl.h> --- 9 unchanged lines hidden (view full) --- 60#include "timer.h" 61#include "fsm.h" 62#include "iplist.h" 63#include "lqr.h" 64#include "hdlc.h" 65#include "throughput.h" 66#include "slcompress.h" 67#include "descriptor.h" |
68#include "ncpaddr.h" 69#include "ip.h" |
|
63#include "ipcp.h" 64#include "filter.h" 65#include "lcp.h" 66#include "ccp.h" 67#include "link.h" 68#include "mp.h" 69#ifndef NORADIUS 70#include "radius.h" 71#endif | 70#include "ipcp.h" 71#include "filter.h" 72#include "lcp.h" 73#include "ccp.h" 74#include "link.h" 75#include "mp.h" 76#ifndef NORADIUS 77#include "radius.h" 78#endif |
79#include "ipv6cp.h" 80#include "ncp.h" |
|
72#include "bundle.h" 73#include "prompt.h" 74#include "iface.h" 75 76 | 81#include "bundle.h" 82#include "prompt.h" 83#include "iface.h" 84 85 |
77static int 78bitsinmask(struct in_addr mask) 79{ 80 u_int32_t bitmask, maskaddr; 81 int bits; 82 83 bitmask = 0xffffffff; 84 maskaddr = ntohl(mask.s_addr); 85 for (bits = 32; bits >= 0; bits--) { 86 if (maskaddr == bitmask) 87 break; 88 bitmask &= ~(1 << (32 - bits)); 89 } 90 91 return bits; 92} 93 | |
94struct iface * 95iface_Create(const char *name) 96{ | 86struct iface * 87iface_Create(const char *name) 88{ |
97 int mib[6], s, maxtries, err; | 89 int mib[6], maxtries, err; |
98 size_t needed, namelen; 99 char *buf, *ptr, *end; 100 struct if_msghdr *ifm; 101 struct ifa_msghdr *ifam; 102 struct sockaddr_dl *dl; 103 struct sockaddr *sa[RTAX_MAX]; 104 struct iface *iface; 105 struct iface_addr *addr; 106 | 90 size_t needed, namelen; 91 char *buf, *ptr, *end; 92 struct if_msghdr *ifm; 93 struct ifa_msghdr *ifam; 94 struct sockaddr_dl *dl; 95 struct sockaddr *sa[RTAX_MAX]; 96 struct iface *iface; 97 struct iface_addr *addr; 98 |
107 s = socket(AF_INET, SOCK_DGRAM, 0); 108 if (s < 0) { 109 fprintf(stderr, "iface_Create: socket(): %s\n", strerror(errno)); 110 return NULL; 111 } 112 | |
113 mib[0] = CTL_NET; 114 mib[1] = PF_ROUTE; 115 mib[2] = 0; 116 mib[3] = 0; 117 mib[4] = NET_RT_IFLIST; 118 mib[5] = 0; 119 120 maxtries = 20; 121 err = 0; 122 do { 123 if (maxtries-- == 0 || (err && err != ENOMEM)) { 124 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err)); | 99 mib[0] = CTL_NET; 100 mib[1] = PF_ROUTE; 101 mib[2] = 0; 102 mib[3] = 0; 103 mib[4] = NET_RT_IFLIST; 104 mib[5] = 0; 105 106 maxtries = 20; 107 err = 0; 108 do { 109 if (maxtries-- == 0 || (err && err != ENOMEM)) { 110 fprintf(stderr, "iface_Create: sysctl: %s\n", strerror(err)); |
125 close(s); | |
126 return NULL; 127 } 128 129 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 130 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n", 131 strerror(errno)); | 111 return NULL; 112 } 113 114 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 115 fprintf(stderr, "iface_Create: sysctl: estimate: %s\n", 116 strerror(errno)); |
132 close(s); | |
133 return NULL; 134 } 135 136 if ((buf = (char *)malloc(needed)) == NULL) { 137 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno)); | 117 return NULL; 118 } 119 120 if ((buf = (char *)malloc(needed)) == NULL) { 121 fprintf(stderr, "iface_Create: malloc failed: %s\n", strerror(errno)); |
138 close(s); | |
139 return NULL; 140 } 141 142 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 143 err = errno; 144 free(buf); 145 buf = NULL; 146 } --- 14 unchanged lines hidden (view full) --- 161 if (iface == NULL) { 162 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno)); 163 return NULL; 164 } 165 iface->name = strdup(name); 166 iface->index = ifm->ifm_index; 167 iface->flags = ifm->ifm_flags; 168 iface->mtu = 0; | 122 return NULL; 123 } 124 125 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 126 err = errno; 127 free(buf); 128 buf = NULL; 129 } --- 14 unchanged lines hidden (view full) --- 144 if (iface == NULL) { 145 fprintf(stderr, "iface_Create: malloc: %s\n", strerror(errno)); 146 return NULL; 147 } 148 iface->name = strdup(name); 149 iface->index = ifm->ifm_index; 150 iface->flags = ifm->ifm_flags; 151 iface->mtu = 0; |
169 iface->in_addrs = 0; 170 iface->in_addr = NULL; | 152 iface->addrs = 0; 153 iface->addr = NULL; |
171 } 172 ptr += ifm->ifm_msglen; /* First ifa_msghdr */ 173 for (; ptr < end; ptr += ifam->ifam_msglen) { 174 ifam = (struct ifa_msghdr *)ptr; /* Next if address */ 175 176 if (ifam->ifam_type != RTM_NEWADDR) /* finished this if */ 177 break; 178 179 if (iface != NULL && ifam->ifam_addrs & RTA_IFA) { 180 /* Found a configured interface ! */ 181 iface_ParseHdr(ifam, sa); 182 | 154 } 155 ptr += ifm->ifm_msglen; /* First ifa_msghdr */ 156 for (; ptr < end; ptr += ifam->ifam_msglen) { 157 ifam = (struct ifa_msghdr *)ptr; /* Next if address */ 158 159 if (ifam->ifam_type != RTM_NEWADDR) /* finished this if */ 160 break; 161 162 if (iface != NULL && ifam->ifam_addrs & RTA_IFA) { 163 /* Found a configured interface ! */ 164 iface_ParseHdr(ifam, sa); 165 |
183 if (sa[RTAX_IFA] && sa[RTAX_IFA]->sa_family == AF_INET) { | 166 if (sa[RTAX_IFA] && (sa[RTAX_IFA]->sa_family == AF_INET 167#ifndef NOINET6 168 || sa[RTAX_IFA]->sa_family == AF_INET6 169#endif 170 )) { |
184 /* Record the address */ 185 | 171 /* Record the address */ 172 |
186 addr = (struct iface_addr *)realloc 187 (iface->in_addr, (iface->in_addrs + 1) * sizeof iface->in_addr[0]); | 173 addr = (struct iface_addr *) 174 realloc(iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); |
188 if (addr == NULL) 189 break; | 175 if (addr == NULL) 176 break; |
190 iface->in_addr = addr; | 177 iface->addr = addr; |
191 | 178 |
192 addr += iface->in_addrs; 193 iface->in_addrs++; | 179 addr += iface->addrs; 180 iface->addrs++; |
194 | 181 |
195 addr->ifa = ((struct sockaddr_in *)sa[RTAX_IFA])->sin_addr; 196 | 182 ncprange_setsa(&addr->ifa, sa[RTAX_IFA], sa[RTAX_NETMASK]); |
197 if (sa[RTAX_BRD]) | 183 if (sa[RTAX_BRD]) |
198 addr->brd = ((struct sockaddr_in *)sa[RTAX_BRD])->sin_addr; | 184 ncpaddr_setsa(&addr->peer, sa[RTAX_BRD]); |
199 else | 185 else |
200 addr->brd.s_addr = INADDR_ANY; 201 202 if (sa[RTAX_NETMASK]) 203 addr->mask = ((struct sockaddr_in *)sa[RTAX_NETMASK])->sin_addr; 204 else 205 addr->mask.s_addr = INADDR_ANY; 206 207 addr->bits = bitsinmask(addr->mask); | 186 ncpaddr_init(&addr->peer); |
208 } 209 } 210 } 211 } 212 213 free(buf); | 187 } 188 } 189 } 190 } 191 192 free(buf); |
214 close(s); | |
215 216 return iface; 217} 218 | 193 194 return iface; 195} 196 |
197static int 198iface_addr_Zap(const char *name, struct iface_addr *addr, int s) 199{ 200 struct ifaliasreq ifra; 201#ifndef NOINET6 202 struct in6_aliasreq ifra6; 203#endif 204 struct sockaddr_in *me4, *msk4, *peer4; 205 struct sockaddr_storage ssme, sspeer, ssmsk; 206 int res; 207 208 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 209 ncpaddr_getsa(&addr->peer, &sspeer); 210 res = 0; 211 212 switch (ncprange_family(&addr->ifa)) { 213 case AF_INET: 214 memset(&ifra, '\0', sizeof ifra); 215 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); 216 217 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 218 memcpy(me4, &ssme, sizeof *me4); 219 220 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 221 memcpy(msk4, &ssmsk, sizeof *msk4); 222 223 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 224 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 225 peer4->sin_family = AF_INET; 226 peer4->sin_len = sizeof(*peer4); 227 peer4->sin_addr.s_addr = INADDR_NONE; 228 } else 229 memcpy(peer4, &sspeer, sizeof *peer4); 230 231 res = ID0ioctl(s, SIOCDIFADDR, &ifra); 232 break; 233 234#ifndef NOINET6 235 case AF_INET6: 236 memset(&ifra6, '\0', sizeof ifra6); 237 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 238 239 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 240 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 241 ifra6.ifra_prefixmask.sin6_family = AF_UNSPEC; 242 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 243 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 244 else 245 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 246 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 247 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 248 249 res = ID0ioctl(s, SIOCDIFADDR_IN6, &ifra6); 250 break; 251#endif 252 } 253 254 if (res == -1) { 255 char dst[40]; 256 const char *end = 257#ifndef NOINET6 258 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 259#endif 260 ""; 261 262 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 263 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s): %s\n", 264 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 265 else { 266 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 267 log_Printf(LogWARN, "iface rm: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 268 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 269 } 270 } 271 272 return res != -1; 273} 274 |
|
219static void | 275static void |
220iface_addr_Zap(const char *name, struct iface_addr *addr) | 276iface_addr_Add(const char *name, struct iface_addr *addr, int s) |
221{ 222 struct ifaliasreq ifra; | 277{ 278 struct ifaliasreq ifra; |
223 struct sockaddr_in *me, *peer; 224 int s; | 279#ifndef NOINET6 280 struct in6_aliasreq ifra6; 281#endif 282 struct sockaddr_in *me4, *msk4, *peer4; 283 struct sockaddr_storage ssme, sspeer, ssmsk; 284 int res; |
225 | 285 |
226 s = ID0socket(AF_INET, SOCK_DGRAM, 0); 227 if (s < 0) 228 log_Printf(LogERROR, "iface_addr_Zap: socket(): %s\n", strerror(errno)); 229 else { | 286 ncprange_getsa(&addr->ifa, &ssme, &ssmsk); 287 ncpaddr_getsa(&addr->peer, &sspeer); 288 res = 0; 289 290 switch (ncprange_family(&addr->ifa)) { 291 case AF_INET: |
230 memset(&ifra, '\0', sizeof ifra); 231 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); | 292 memset(&ifra, '\0', sizeof ifra); 293 strncpy(ifra.ifra_name, name, sizeof ifra.ifra_name - 1); |
232 me = (struct sockaddr_in *)&ifra.ifra_addr; 233 peer = (struct sockaddr_in *)&ifra.ifra_broadaddr; 234 me->sin_family = peer->sin_family = AF_INET; 235 me->sin_len = peer->sin_len = sizeof(struct sockaddr_in); 236 me->sin_addr = addr->ifa; 237 peer->sin_addr = addr->brd; 238 log_Printf(LogDEBUG, "Delete %s\n", inet_ntoa(addr->ifa)); 239 if (ID0ioctl(s, SIOCDIFADDR, &ifra) < 0) 240 log_Printf(LogWARN, "iface_addr_Zap: ioctl(SIOCDIFADDR, %s): %s\n", 241 inet_ntoa(addr->ifa), strerror(errno)); 242 close(s); | 294 295 me4 = (struct sockaddr_in *)&ifra.ifra_addr; 296 memcpy(me4, &ssme, sizeof *me4); 297 298 msk4 = (struct sockaddr_in *)&ifra.ifra_mask; 299 memcpy(msk4, &ssmsk, sizeof *msk4); 300 301 peer4 = (struct sockaddr_in *)&ifra.ifra_broadaddr; 302 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) { 303 peer4->sin_family = AF_INET; 304 peer4->sin_len = sizeof(*peer4); 305 peer4->sin_addr.s_addr = INADDR_NONE; 306 } else 307 memcpy(peer4, &sspeer, sizeof *peer4); 308 309 res = ID0ioctl(s, SIOCAIFADDR, &ifra); 310 break; 311 312#ifndef NOINET6 313 case AF_INET6: 314 memset(&ifra6, '\0', sizeof ifra6); 315 strncpy(ifra6.ifra_name, name, sizeof ifra6.ifra_name - 1); 316 317 memcpy(&ifra6.ifra_addr, &ssme, sizeof ifra6.ifra_addr); 318 memcpy(&ifra6.ifra_prefixmask, &ssmsk, sizeof ifra6.ifra_prefixmask); 319 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 320 ifra6.ifra_dstaddr.sin6_family = AF_UNSPEC; 321 else 322 memcpy(&ifra6.ifra_dstaddr, &sspeer, sizeof ifra6.ifra_dstaddr); 323 ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME; 324 ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME; 325 326 res = ID0ioctl(s, SIOCAIFADDR_IN6, &ifra6); 327 break; 328#endif |
243 } | 329 } |
330 331 if (res == -1) { 332 char dst[40]; 333 const char *end = 334#ifndef NOINET6 335 ncprange_family(&addr->ifa) == AF_INET6 ? "_IN6" : 336#endif 337 ""; 338 339 if (ncpaddr_family(&addr->peer) == AF_UNSPEC) 340 log_Printf(LogWARN, "iface add: ioctl(SIOCAIFADDR%s, %s): %s\n", 341 end, ncprange_ntoa(&addr->ifa), strerror(errno)); 342 else { 343 snprintf(dst, sizeof dst, "%s", ncpaddr_ntoa(&addr->peer)); 344 log_Printf(LogWARN, "iface add: ioctl(SIOCDIFADDR%s, %s -> %s): %s\n", 345 end, ncprange_ntoa(&addr->ifa), dst, strerror(errno)); 346 } 347 } |
|
244} 245 | 348} 349 |
350 |
|
246void | 351void |
247iface_inClear(struct iface *iface, int how) | 352iface_Clear(struct iface *iface, struct ncp *ncp, int family, int how) |
248{ | 353{ |
249 int n, addrs; | 354 int addrs, af, inskip, in6skip, n, s4 = -1, s6 = -1, *s; |
250 | 355 |
251 if (iface->in_addrs) { 252 addrs = n = how == IFACE_CLEAR_ALL ? 0 : 1; 253 for (; n < iface->in_addrs; n++) 254 iface_addr_Zap(iface->name, iface->in_addr + n); | 356 if (iface->addrs) { 357 inskip = in6skip = how == IFACE_CLEAR_ALL ? 0 : 1; 358 addrs = 0; |
255 | 359 |
256 iface->in_addrs = addrs; | 360 for (n = 0; n < iface->addrs; n++) { 361 af = ncprange_family(&iface->addr[n].ifa); 362 if (family == 0 || family == af) { 363 if (!iface->addr[n].system && (how & IFACE_SYSTEM)) 364 continue; 365 switch (af) { 366 case AF_INET: 367 if (inskip) { 368 inskip = 0; 369 continue; 370 } 371 s = &s4; 372 break; 373 374#ifndef NOINET6 375 case AF_INET6: 376 if (in6skip) { 377 in6skip = 0; 378 continue; 379 } 380 s = &s6; 381 break; 382#endif 383 } 384 385 if (*s == -1 && (*s = ID0socket(af, SOCK_DGRAM, 0)) == -1) 386 log_Printf(LogERROR, "iface_Clear: socket(): %s\n", strerror(errno)); 387 else if (iface_addr_Zap(iface->name, iface->addr + n, *s)) { 388 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 389 bcopy(iface->addr + n + 1, iface->addr + n, 390 (iface->addrs - n - 1) * sizeof *iface->addr); 391 iface->addrs--; 392 n--; 393 } 394 } 395 } 396 |
257 /* Don't bother realloc()ing - we have little to gain */ | 397 /* Don't bother realloc()ing - we have little to gain */ |
398 399 if (s4) 400 close(s4); 401 if (s6) 402 close(s6); |
|
258 } 259} 260 261int | 403 } 404} 405 406int |
262iface_inAdd(struct iface *iface, struct in_addr ifa, struct in_addr mask, 263 struct in_addr brd, int how) | 407iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, 408 const struct ncpaddr *peer, int how) |
264{ | 409{ |
265 int slot, s, chg, nochange; 266 struct ifaliasreq ifra; 267 struct sockaddr_in *me, *peer, *msk; | 410 int af, n, s, width; 411 struct ncpaddr ifaddr, ncplocal; |
268 struct iface_addr *addr; 269 | 412 struct iface_addr *addr; 413 |
270 for (slot = 0; slot < iface->in_addrs; slot++) 271 if (iface->in_addr[slot].ifa.s_addr == ifa.s_addr) { 272 if (how & IFACE_FORCE_ADD) 273 break; 274 else 275 /* errno = EEXIST; */ 276 return 0; 277 } 278 279 addr = (struct iface_addr *)realloc 280 (iface->in_addr, (iface->in_addrs + 1) * sizeof iface->in_addr[0]); 281 if (addr == NULL) { 282 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); | 414 af = ncprange_family(ifa); 415 if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { 416 log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); |
283 return 0; 284 } | 417 return 0; 418 } |
285 iface->in_addr = addr; | 419 ncprange_getaddr(ifa, &ncplocal); |
286 | 420 |
287 /* 288 * We've gotta be careful here. If we try to add an address with the 289 * same destination as an existing interface, nothing will work. 290 * Instead, we tweak all previous address entries that match the 291 * to-be-added destination to 255.255.255.255 (w/ a similar netmask). 292 * There *may* be more than one - if the user has ``iface add''ed 293 * stuff previously. 294 */ 295 nochange = 0; 296 s = -1; 297 for (chg = 0; chg < iface->in_addrs; chg++) { 298 if ((iface->in_addr[chg].brd.s_addr == brd.s_addr && 299 brd.s_addr != INADDR_BROADCAST) || chg == slot) { 300 /* 301 * If we've found an entry that exactly matches what we want to add, 302 * don't remove it and then add it again. If we do, it's possible 303 * that the kernel will (correctly) ``tidy up'' any routes that use 304 * the IP number as a destination. 305 */ 306 if (chg == slot && iface->in_addr[chg].mask.s_addr == mask.s_addr) { 307 if (brd.s_addr == iface->in_addr[slot].brd.s_addr) 308 nochange = 1; 309 /* 310 * If only the destination address has changed, the SIOCAIFADDR 311 * we do after the current loop will change it. 312 */ 313 continue; | 421 for (n = 0; n < iface->addrs; n++) { 422 if (ncprange_contains(&iface->addr[n].ifa, &ncplocal)) { 423 if (!(how & IFACE_FORCE_ADD)) { 424 close(s); 425 return 0; /* errno = EEXIST; */ |
314 } | 426 } |
315 if (s == -1 && (s = ID0socket(AF_INET, SOCK_DGRAM, 0)) == -1) { 316 log_Printf(LogERROR, "iface_inAdd: socket(): %s\n", strerror(errno)); 317 return 0; | 427 428 if (ncprange_equal(&iface->addr[n].ifa, ifa) && 429 ncpaddr_equal(&iface->addr[n].peer, peer)) { 430 close(s); 431 return 1; /* Already there */ |
318 } 319 | 432 } 433 |
320 memset(&ifra, '\0', sizeof ifra); 321 strncpy(ifra.ifra_name, iface->name, sizeof ifra.ifra_name - 1); 322 me = (struct sockaddr_in *)&ifra.ifra_addr; 323 msk = (struct sockaddr_in *)&ifra.ifra_mask; 324 peer = (struct sockaddr_in *)&ifra.ifra_broadaddr; 325 me->sin_family = msk->sin_family = peer->sin_family = AF_INET; 326 me->sin_len = msk->sin_len = peer->sin_len = sizeof(struct sockaddr_in); 327 me->sin_addr = iface->in_addr[chg].ifa; 328 msk->sin_addr = iface->in_addr[chg].mask; 329 peer->sin_addr = iface->in_addr[chg].brd; 330 log_Printf(LogDEBUG, "Delete %s\n", inet_ntoa(me->sin_addr)); 331 ID0ioctl(s, SIOCDIFADDR, &ifra); /* Don't care if it fails... */ 332 if (chg != slot) { 333 peer->sin_addr.s_addr = iface->in_addr[chg].brd.s_addr = 334 msk->sin_addr.s_addr = iface->in_addr[chg].mask.s_addr = 335 INADDR_BROADCAST; 336 iface->in_addr[chg].bits = 32; 337 log_Printf(LogDEBUG, "Add %s -> 255.255.255.255\n", 338 inet_ntoa(me->sin_addr)); 339 if (ID0ioctl(s, SIOCAIFADDR, &ifra) < 0 && errno != EEXIST) { 340 /* Oops - that's bad(ish) news ! We've lost an alias ! */ 341 log_Printf(LogERROR, "iface_inAdd: ioctl(SIOCAIFADDR): %s: %s\n", 342 inet_ntoa(me->sin_addr), strerror(errno)); 343 iface->in_addrs--; 344 bcopy(iface->in_addr + chg + 1, iface->in_addr + chg, 345 (iface->in_addrs - chg) * sizeof iface->in_addr[0]); 346 if (slot > chg) 347 slot--; 348 chg--; 349 } | 434 width = 435#ifndef NOINET6 436 (af == AF_INET6) ? 128 : 437#endif 438 32; 439 iface_addr_Zap(iface->name, iface->addr + n, s); 440 ncprange_setwidth(&iface->addr[n].ifa, width); 441 ncprange_getaddr(&iface->addr[n].ifa, &ifaddr); 442 if (ncpaddr_equal(&ifaddr, &ncplocal)) 443 ncpaddr_copy(&iface->addr[n].peer, peer); 444 else 445 ncpaddr_init(&iface->addr[n].peer); 446 iface_addr_Add(iface->name, iface->addr + n, s); 447 if (ncpaddr_equal(&ifaddr, &ncplocal)) { 448 close(s); 449 ncp_IfaceAddrAdded(ncp, iface->addr + n); 450 return 1; |
350 } 351 } 352 } 353 | 451 } 452 } 453 } 454 |
354 if (!nochange) { 355 if (s == -1 && (s = ID0socket(AF_INET, SOCK_DGRAM, 0)) == -1) { 356 log_Printf(LogERROR, "iface_inAdd: socket(): %s\n", strerror(errno)); 357 return 0; 358 } 359 memset(&ifra, '\0', sizeof ifra); 360 strncpy(ifra.ifra_name, iface->name, sizeof ifra.ifra_name - 1); 361 me = (struct sockaddr_in *)&ifra.ifra_addr; 362 msk = (struct sockaddr_in *)&ifra.ifra_mask; 363 peer = (struct sockaddr_in *)&ifra.ifra_broadaddr; 364 me->sin_family = msk->sin_family = peer->sin_family = AF_INET; 365 me->sin_len = msk->sin_len = peer->sin_len = sizeof(struct sockaddr_in); 366 me->sin_addr = ifa; 367 msk->sin_addr = mask; 368 peer->sin_addr = brd; 369 370 if (log_IsKept(LogDEBUG)) { 371 char buf[16]; 372 373 strncpy(buf, inet_ntoa(brd), sizeof buf-1); 374 buf[sizeof buf - 1] = '\0'; 375 log_Printf(LogDEBUG, "Add %s -> %s\n", inet_ntoa(ifa), buf); 376 } 377 378 /* An EEXIST failure w/ brd == INADDR_BROADCAST is ok (and works!) */ 379 if (ID0ioctl(s, SIOCAIFADDR, &ifra) < 0 && 380 (brd.s_addr != INADDR_BROADCAST || errno != EEXIST)) { 381 log_Printf(LogERROR, "iface_inAdd: ioctl(SIOCAIFADDR): %s: %s\n", 382 inet_ntoa(ifa), strerror(errno)); 383 ID0ioctl(s, SIOCDIFADDR, &ifra); /* EEXIST ? */ 384 close(s); 385 return 0; 386 } | 455 addr = (struct iface_addr *)realloc 456 (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); 457 if (addr == NULL) { 458 log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); 459 close(s); 460 return 0; |
387 } | 461 } |
462 iface->addr = addr; |
|
388 | 463 |
389 if (s != -1) 390 close(s); | 464 if (how & IFACE_ADD_FIRST) { 465 /* Stuff it at the start of our list */ 466 n = 0; 467 bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); 468 } else 469 n = iface->addrs; |
391 | 470 |
392 if (slot == iface->in_addrs) { 393 /* We're adding a new interface address */ | 471 iface->addrs++; 472 ncprange_copy(&iface->addr[n].ifa, ifa); 473 ncpaddr_copy(&iface->addr[n].peer, peer); 474 iface->addr[n].system = !!(how & IFACE_SYSTEM); 475 iface_addr_Add(iface->name, iface->addr + n, s); |
394 | 476 |
395 if (how & IFACE_ADD_FIRST) { 396 /* Stuff it at the start of our list */ 397 slot = 0; 398 bcopy(iface->in_addr, iface->in_addr + 1, 399 iface->in_addrs * sizeof iface->in_addr[0]); 400 } | 477 close(s); 478 ncp_IfaceAddrAdded(ncp, iface->addr + n); |
401 | 479 |
402 iface->in_addrs++; 403 } else if (how & IFACE_ADD_FIRST) { 404 /* Shift it up to the first slot */ 405 bcopy(iface->in_addr, iface->in_addr + 1, slot * sizeof iface->in_addr[0]); 406 slot = 0; 407 } 408 409 iface->in_addr[slot].ifa = ifa; 410 iface->in_addr[slot].mask = mask; 411 iface->in_addr[slot].brd = brd; 412 iface->in_addr[slot].bits = bitsinmask(iface->in_addr[slot].mask); 413 | |
414 return 1; 415} 416 417int | 480 return 1; 481} 482 483int |
418iface_inDelete(struct iface *iface, struct in_addr ip) | 484iface_Delete(struct iface *iface, struct ncp *ncp, const struct ncpaddr *del) |
419{ | 485{ |
420 int n; | 486 struct ncpaddr found; 487 int n, res, s; |
421 | 488 |
422 for (n = 0; n < iface->in_addrs; n++) 423 if (iface->in_addr[n].ifa.s_addr == ip.s_addr) { 424 iface_addr_Zap(iface->name, iface->in_addr + n); 425 bcopy(iface->in_addr + n + 1, iface->in_addr + n, 426 (iface->in_addrs - n - 1) * sizeof iface->in_addr[0]); 427 iface->in_addrs--; 428 return 1; | 489 if ((s = ID0socket(ncpaddr_family(del), SOCK_DGRAM, 0)) == -1) { 490 log_Printf(LogERROR, "iface_Delete: socket(): %s\n", strerror(errno)); 491 return 0; 492 } 493 494 for (n = res = 0; n < iface->addrs; n++) { 495 ncprange_getaddr(&iface->addr[n].ifa, &found); 496 if (ncpaddr_equal(&found, del)) { 497 iface_addr_Zap(iface->name, iface->addr + n, s); 498 ncp_IfaceAddrDeleted(ncp, iface->addr + n); 499 bcopy(iface->addr + n + 1, iface->addr + n, 500 (iface->addrs - n - 1) * sizeof *iface->addr); 501 iface->addrs--; 502 res = 1; 503 break; |
429 } | 504 } |
505 } |
|
430 | 506 |
431 return 0; | 507 close(s); 508 509 return res; |
432} 433 434#define IFACE_ADDFLAGS 1 435#define IFACE_DELFLAGS 2 436 437static int 438iface_ChangeFlags(const char *ifname, int flags, int how) 439{ --- 50 unchanged lines hidden (view full) --- 490 /* 491 * iface_Clear(iface, IFACE_CLEAR_ALL) must be called manually 492 * if that's what the user wants. It's better to leave the interface 493 * allocated so that existing connections can continue to work. 494 */ 495 496 if (iface != NULL) { 497 free(iface->name); | 510} 511 512#define IFACE_ADDFLAGS 1 513#define IFACE_DELFLAGS 2 514 515static int 516iface_ChangeFlags(const char *ifname, int flags, int how) 517{ --- 50 unchanged lines hidden (view full) --- 568 /* 569 * iface_Clear(iface, IFACE_CLEAR_ALL) must be called manually 570 * if that's what the user wants. It's better to leave the interface 571 * allocated so that existing connections can continue to work. 572 */ 573 574 if (iface != NULL) { 575 free(iface->name); |
498 free(iface->in_addr); | 576 free(iface->addr); |
499 free(iface); 500 } 501} 502 503#define if_entry(x) { IFF_##x, #x } 504 505struct { 506 int flag; --- 15 unchanged lines hidden (view full) --- 522 if_entry(LINK2), 523 if_entry(MULTICAST), 524 { 0, "???" } 525}; 526 527int 528iface_Show(struct cmdargs const *arg) 529{ | 577 free(iface); 578 } 579} 580 581#define if_entry(x) { IFF_##x, #x } 582 583struct { 584 int flag; --- 15 unchanged lines hidden (view full) --- 600 if_entry(LINK2), 601 if_entry(MULTICAST), 602 { 0, "???" } 603}; 604 605int 606iface_Show(struct cmdargs const *arg) 607{ |
608 struct ncpaddr ncpaddr; |
|
530 struct iface *iface = arg->bundle->iface, *current; 531 int f, flags; | 609 struct iface *iface = arg->bundle->iface, *current; 610 int f, flags; |
611#ifndef NOINET6 612 int scopeid, width; 613#endif 614 struct in_addr mask; |
|
532 533 current = iface_Create(iface->name); 534 flags = iface->flags = current->flags; 535 iface_Destroy(current); 536 537 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 538 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 539 if ((if_flags[f].flag & flags) || (!if_flags[f].flag && flags)) { 540 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 541 if_flags[f].value); 542 flags &= ~if_flags[f].flag; 543 } 544 prompt_Printf(arg->prompt, "> mtu %d has %d address%s:\n", iface->mtu, | 615 616 current = iface_Create(iface->name); 617 flags = iface->flags = current->flags; 618 iface_Destroy(current); 619 620 prompt_Printf(arg->prompt, "%s (idx %d) <", iface->name, iface->index); 621 for (f = 0; f < sizeof if_flags / sizeof if_flags[0]; f++) 622 if ((if_flags[f].flag & flags) || (!if_flags[f].flag && flags)) { 623 prompt_Printf(arg->prompt, "%s%s", flags == iface->flags ? "" : ",", 624 if_flags[f].value); 625 flags &= ~if_flags[f].flag; 626 } 627 prompt_Printf(arg->prompt, "> mtu %d has %d address%s:\n", iface->mtu, |
545 iface->in_addrs, iface->in_addrs == 1 ? "" : "es"); | 628 iface->addrs, iface->addrs == 1 ? "" : "es"); |
546 | 629 |
547 for (f = 0; f < iface->in_addrs; f++) { 548 prompt_Printf(arg->prompt, " %s", inet_ntoa(iface->in_addr[f].ifa)); 549 if (iface->in_addr[f].bits >= 0) 550 prompt_Printf(arg->prompt, "/%d", iface->in_addr[f].bits); 551 if (iface->flags & IFF_POINTOPOINT) 552 prompt_Printf(arg->prompt, " -> %s", inet_ntoa(iface->in_addr[f].brd)); 553 else if (iface->flags & IFF_BROADCAST) 554 prompt_Printf(arg->prompt, " broadcast %s", 555 inet_ntoa(iface->in_addr[f].brd)); 556 if (iface->in_addr[f].bits < 0) 557 prompt_Printf(arg->prompt, " (mask %s)", 558 inet_ntoa(iface->in_addr[f].mask)); | 630 for (f = 0; f < iface->addrs; f++) { 631 ncprange_getaddr(&iface->addr[f].ifa, &ncpaddr); 632 switch (ncprange_family(&iface->addr[f].ifa)) { 633 case AF_INET: 634 prompt_Printf(arg->prompt, " inet %s --> ", ncpaddr_ntoa(&ncpaddr)); 635 if (ncpaddr_family(&iface->addr[f].peer) == AF_UNSPEC) 636 prompt_Printf(arg->prompt, "255.255.255.255"); 637 else 638 prompt_Printf(arg->prompt, "%s", ncpaddr_ntoa(&iface->addr[f].peer)); 639 ncprange_getip4mask(&iface->addr[f].ifa, &mask); 640 prompt_Printf(arg->prompt, " netmask 0x%08lx", (long)ntohl(mask.s_addr)); 641 break; 642 643#ifndef NOINET6 644 case AF_INET6: 645 prompt_Printf(arg->prompt, " inet6 %s", ncpaddr_ntoa(&ncpaddr)); 646 if (ncpaddr_family(&iface->addr[f].peer) != AF_UNSPEC) 647 prompt_Printf(arg->prompt, " --> %s", 648 ncpaddr_ntoa(&iface->addr[f].peer)); 649 ncprange_getwidth(&iface->addr[f].ifa, &width); 650 prompt_Printf(arg->prompt, " prefixlen %d", width); 651 if ((scopeid = ncprange_scopeid(&iface->addr[f].ifa)) != -1) 652 prompt_Printf(arg->prompt, " scopeid 0x%x", (unsigned)scopeid); 653 break; 654#endif 655 } |
559 prompt_Printf(arg->prompt, "\n"); 560 } 561 562 return 0; 563} 564 565void 566iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) --- 13 unchanged lines hidden --- | 656 prompt_Printf(arg->prompt, "\n"); 657 } 658 659 return 0; 660} 661 662void 663iface_ParseHdr(struct ifa_msghdr *ifam, struct sockaddr *sa[RTAX_MAX]) --- 13 unchanged lines hidden --- |