/* * This file is part of the Sofia-SIP package * * Copyright (C) 2005 Nokia Corporation. * * Contact: Pekka Pessi * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ /**@ingroup su_socket * @CFILE su_localinfo.c * * Obtain list of local addresses. * * @author Pekka Pessi * @author Martti Mela * * @date Created: Wed Oct 4 14:09:29 EET 2000 ppessi */ #include "config.h" #if HAVE_SYS_SOCKIO_H #include #endif #include #include #include #include "su_module_debug.h" #include #include #include #include #include #include #if HAVE_SYS_SOCKET_H #include #endif #if HAVE_NETINET_IN_H #include #endif #if HAVE_SYS_IOCTL_H #include #endif #if HAVE_NET_IF_H #include #endif #if HAVE_NET_IF_TYPES_H #include #endif #if SU_LOCALINFO_TEST #undef USE_LOCALINFO0 #elif HAVE_GETIFADDRS #define USE_LOCALINFO0 1 #define localinfo0 bsd_localinfo static int bsd_localinfo(su_localinfo_t const *, su_localinfo_t **); #elif HAVE_IPHLPAPI_H #include #define USE_LOCALINFO0 1 #define localinfo0 win_localinfo static int win_localinfo(su_localinfo_t const *, su_localinfo_t **); #else /* No localinfo0(), use localinfo4() and localinfo6() */ #undef USE_LOCALINFO0 static int localinfo4(su_localinfo_t const *, su_localinfo_t **); # if SU_HAVE_IN6 static int localinfo6(su_localinfo_t const *, su_localinfo_t **); # endif #endif static int li_scope4(uint32_t ip4); #if SU_HAVE_IN6 static int li_scope6(struct in6_addr const *ip6); #endif #if !SU_LOCALINFO_TEST static int li_name(su_localinfo_t const*, int, su_sockaddr_t const*, char **); static void li_sort(su_localinfo_t *i, su_localinfo_t **rresult); /** @brief Request local address information. * * Gather the network interfaces and the addresses corresponding to them, * check if they match to the search criteria specifed by @a hints and * return a list of matching local address information in the @a * return_localinfo. The local address information may include IPv4/IPv6 * addresses, interface name, interface index, address scope, and domain * names corresponding to the local addresses. * * @param[in] hints specifies selection criteria * @param[out] return_localinfo return list of local addresses * * @par Selection criteria - hints * * The selection criteria @a hints is used to select which addresses are * returned and what kind of information is included in the @a res list. * * @par Selection by flags - hints->li_flags * * The @a hints->li_flags contain flags, which can be combined with bit-wise * or. The currently defined flags are as follows: * * - #LI_V4MAPPED: when returning IPv4 addresses, map them as IPv6 * addresses. If this flag is specified, IPv4 addresses are returned even * if @a hints->li_family is set to @c AF_INET6. * - #LI_CANONNAME: return the domain name (DNS PTR) corresponding to the * local address in @a li_canonname. * - #LI_NAMEREQD: Do not return addresses not in DNS. * - #LI_NUMERIC: instead of domain name, return the text presentation of * the addresss in @a li_canonname. * - #LI_DOWN: include interfaces and their addresses even if the interfaces * are down. New in @VERSION_1_12_2. * - #LI_IFNAME: return the interface name in @a li_ifname. * * @par Selection by address family - hints->li_family * * The address family can have three values: 0, AF_INET and AF_INET6. If * address family @a hints->li_family, both IPv4 and IPv6 addresses are * returned. * * @par Selection by interface index - hints->li_index * * If the field @a hints->li_index is non-zero, only the addresses assigned * to the interface with given index are returned. The list of interface * indices and names can be obtained by the function @c su_if_names(). * * @par Selection by interface name - hints->li_ifname * * If the field @a hints->li_ifname is not NULL, only the addresses assigned * to the named interface are returned. The list of interface names can be * obtained by the function @c su_if_names(). * * @par Selection by address scope - hints->li_scope * * If the field @a hints->li_scope is nonzero, only the addresses with * matching scope are returned. The different address scopes can be combined * with bitwise or. They are defined as follows * - #LI_SCOPE_HOST: host-local address, valid within host (::1, 127.0.0.1/8) * - #LI_SCOPE_LINK: link-local address, valid within link * (IP6 addresses with prefix fe80::/10, * IP4 addresses in net 169.254.0.0/16). * - #LI_SCOPE_SITE: site-local address, addresses valid within organization * (IPv6 addresses with prefix fec::/10, * private IPv4 addresses in nets 10.0.0.0/8, 172.16.0.0/12, * and 192.168.0.0/16 as defined in @RFC1918) * - #LI_SCOPE_GLOBAL: global address. * * For instance, setting @a hints->li_scope to @c LI_SCOPE_GLOBAL | @c * LI_SCOPE_SITE, both the @e global and @e site-local addresses are * returned. * * @sa @RFC1918, @RFC4291, su_sockaddr_scope() * * @par Selection by domain name - hints->li_canonname * * If this field is non-null, the domain name (DNS PTR) corresponding to * local IP addresses should match to the name given in this field. * * @return Zero (#ELI_NOERROR) when successful, or negative error code when * failed. * * @par Diagnostics * Use su_gli_strerror() in order to obtain a string describing the error * code returned by su_getlocalinfo(). * */ int su_getlocalinfo(su_localinfo_t const *hints, su_localinfo_t **return_localinfo) { int error = 0, ip4 = 0; int ip6 = 0; su_localinfo_t *result = NULL, **rr = &result; su_localinfo_t hh[1] = {{ 0 }}; assert(return_localinfo); *return_localinfo = NULL; if (hints) { /* Copy hints so that it can be modified */ *hh = *hints; if (hh->li_canonname) hh->li_flags |= LI_CANONNAME; #if 0 /* hints->li_ifname is used to select by interface, li_ifname is returned with LI_IFNAME flag */ if ((hh->li_flags & LI_IFNAME) && hh->li_ifname == NULL) return ELI_BADHINTS; #endif } switch (hh->li_family) { #if SU_HAVE_IN6 case AF_INET6: if (hh->li_flags & LI_V4MAPPED) ip6 = ip4 = 1, hh->li_family = 0; else ip6 = 1; break; #endif case AF_INET: #ifndef USE_LOCALINFO0 ip4 = 1; #endif break; case 0: #ifndef USE_LOCALINFO0 ip4 = 1; #endif #if SU_HAVE_IN6 ip6 = 1; #endif break; default: return -1; } #if USE_LOCALINFO0 error = localinfo0(hh, rr); #else # if SU_HAVE_IN6 if (ip6) { error = localinfo6(hh, rr); if (error == ELI_NOADDRESS && ip4) error = 0; if (!error) /* Search end of list */ for (; *rr; rr = &(*rr)->li_next) ; } # endif if (ip4 && !error) { /* Append IPv4 addresses */ error = localinfo4(hh, rr); } #endif if (ip6 && ip4) { /* Required to make compiler happy */ } if (!result) error = ELI_NOADDRESS; if (!error) li_sort(result, return_localinfo); else su_freelocalinfo(result); return error; } #endif /** Free local address information. * * Free a list of su_localinfo_t structures obtained with su_getlocalinfo() * or su_copylocalinfo() along with socket addresses and strings associated * with them. * * @sa su_getlocalinfo(), su_copylocalinfo(), #su_localinfo_t */ void su_freelocalinfo(su_localinfo_t *tbf) { su_localinfo_t *li; for (li = tbf; li; li = tbf) { tbf = li->li_next; if (li->li_canonname) free(li->li_canonname); free(li); } } /** Describe su_localinfo errors. * * The function su_gli_strerror() returns a string describing the error * condition indicated by the code that was returned by the function * su_getlocalinfo(). * * @param error error code returned by su_getlocalinfo() * * @return * A pointer to string describing the error condition. */ char const *su_gli_strerror(int error) { switch (error) { case ELI_NOERROR: return "No error"; case ELI_NOADDRESS: return "No matching address"; case ELI_MEMORY: return "Memory allocation error"; case ELI_FAMILY: return "Unknown address family"; case ELI_RESOLVER: return "Error when resolving address"; case ELI_SYSTEM: return "System error"; case ELI_BADHINTS: return "Invalid value for hints"; default: return "Unknown error"; } } /** Duplicate su_localinfo structure. */ su_localinfo_t *su_copylocalinfo(su_localinfo_t const *li0) { size_t n; su_localinfo_t *li, *retval = NULL, **lli = &retval; # define SLEN(s) ((s) ? strlen(s) + 1 : 0) for (; li0 ; li0 = li0->li_next) { n = sizeof(*li0) + li0->li_addrlen + SLEN(li0->li_ifname); if (!(li = calloc(1, n))) { su_freelocalinfo(retval); return NULL; } *lli = li; lli = &li->li_next; li->li_flags = li0->li_flags; li->li_family = li0->li_family; li->li_index = li0->li_index; li->li_scope = li0->li_scope; li->li_addrlen = li0->li_addrlen; li->li_addr = memcpy(li + 1, li0->li_addr, li0->li_addrlen); if (li0->li_canonname) { if (!(li->li_canonname = malloc(SLEN(li0->li_canonname)))) { su_freelocalinfo(retval); return NULL; } strcpy(li->li_canonname, li0->li_canonname); } if (li0->li_ifname) li->li_ifname = strcpy(li->li_addrlen + (char *)li->li_addr, li0->li_ifname); } return retval; } /** Return IPv4 address scope */ static int li_scope4(uint32_t ip4) { ip4 = ntohl(ip4); if (0x7f000000 == (ip4 & 0xff000000)) return LI_SCOPE_HOST; /* draft-ietf-zeroconf-ipv4-linklocal-02.txt - 169.254/16. */ else if (0xa9fe0000 == (ip4 & 0xffff0000)) return LI_SCOPE_LINK; /* RFC1918 - 10/8, 172.16/12, 192.168/16. */ else if (0x0a000000 == (ip4 & 0xff000000) || 0xac100000 == (ip4 & 0xfff00000) || 0xc0a80000 == (ip4 & 0xffff0000)) return LI_SCOPE_SITE; else return LI_SCOPE_GLOBAL; } #if SU_HAVE_IN6 #if HAVE_WINSOCK2_H #define IN6_IS_ADDR_LOOPBACK SU_IN6_IS_ADDR_LOOPBACK su_inline int IN6_IS_ADDR_LOOPBACK(void const *ip6) { uint8_t const *u = ip6; return u[0] == 0 && u[1] == 0 && u[2] == 0 && u[3] == 0 && u[4] == 0 && u[5] == 0 && u[6] == 0 && u[7] == 0 && u[8] == 0 && u[9] == 0 && u[10] == 0 && u[11] == 0 && u[12] == 0 && u[13] == 0 && u[14] == 0 && u[15] == 1; } #endif /** Return IPv6 address scope */ static int li_scope6(struct in6_addr const *ip6) { if (IN6_IS_ADDR_V4MAPPED(ip6) || IN6_IS_ADDR_V4COMPAT(ip6)) { uint32_t *u = (uint32_t *)(ip6->s6_addr + 12); uint32_t ip4 = *u; return li_scope4(ip4); } else if (IN6_IS_ADDR_LOOPBACK(ip6)) return LI_SCOPE_HOST; else if (IN6_IS_ADDR_LINKLOCAL(ip6)) return LI_SCOPE_LINK; else if (IN6_IS_ADDR_SITELOCAL(ip6)) return LI_SCOPE_SITE; else return LI_SCOPE_GLOBAL; } #endif /** Return the scope of address in the sockaddr structure */ int su_sockaddr_scope(su_sockaddr_t const *su, socklen_t sulen) { if (sulen >= (sizeof su->su_sin) && su->su_family == AF_INET) return li_scope4(su->su_sin.sin_addr.s_addr); #if SU_HAVE_IN6 if (sulen >= (sizeof su->su_sin6) && su->su_family == AF_INET6) return li_scope6(&su->su_sin6.sin6_addr); #endif return 0; } #if HAVE_OPEN_C extern int su_get_local_ip_addr(su_sockaddr_t *su); #endif #if SU_LOCALINFO_TEST #elif USE_LOCALINFO0 /* no localinfo4 */ #elif HAVE_IFCONF #if __APPLE_CC__ /** Build a list of local IPv4 addresses and append it to *rresult. */ static int localinfo4(su_localinfo_t const *hints, su_localinfo_t **rresult) { su_localinfo_t *li = NULL; su_sockaddr_t *su; int error = ELI_NOADDRESS; char *canonname = NULL; su_socket_t s; #if SU_HAVE_IN6 int su_xtra = (hints->li_flags & LI_V4MAPPED) ? sizeof(*su) : 0; #else int const su_xtra = 0; #endif struct ifconf ifc; int numifs; char *buffer; struct ifreq *ifr, *ifr_next; su_sockaddr_t *sa; socklen_t salen = sizeof(*sa); int scope = 0, gni_flags = 0; s = su_socket(AF_INET, SOCK_DGRAM, 0); if (s == -1) { SU_DEBUG_1(("su_localinfo: su_socket failed: %s\n", su_strerror(su_errno()))); return ELI_SYSTEM; } li = calloc(1, (sizeof *li) + (sizeof *sa)); sa = (void *)(li + 1); error = getsockname(s, (struct sockaddr *) sa, &salen); if (error < 0 && errno == SOCKET_ERROR) { SU_DEBUG_1(("%s: getsockname() failed: %s\n", __func__, su_strerror(su_errno()))); } error = bind(s, (struct sockaddr *) sa, salen); if (error < 0) { SU_DEBUG_1(("%s: bind() failed: %s\n", __func__, su_strerror(su_errno()))); goto err; } su_close(s); scope = li_scope4(sa->su_sin.sin_addr.s_addr); if (scope == LI_SCOPE_HOST || scope == LI_SCOPE_LINK) gni_flags = NI_NUMERICHOST; if (su_xtra) { /* Map IPv4 address to IPv6 address */ memset(sa, 0, sizeof(*sa)); sa->su_family = AF_INET6; ((int32_t*)&sa->su_sin6.sin6_addr)[3] = sa->su_sin.sin_addr.s_addr; ((int32_t*)&sa->su_sin6.sin6_addr)[2] = htonl(0xffff); } li->li_family = sa->su_family; li->li_scope = scope; li->li_index = 0; li->li_addrlen = su_sockaddr_size(sa); li->li_addr = sa; if ((error = li_name(hints, gni_flags, sa, &canonname)) < 0) goto err; if (canonname) { if (strchr(canonname, ':') || strspn(canonname, "0123456789.") == strlen(canonname)) li->li_flags |= LI_NUMERIC; } else li->li_flags = 0; li->li_canonname = canonname; canonname = NULL; *rresult = li; return 0; err: if (canonname) free(canonname); if (li) free(li); su_close(s); return error; } #else /* !__APPLE_CC__ */ /** Build a list of local IPv4 addresses and append it to *rresult. */ static int localinfo4(su_localinfo_t const *hints, su_localinfo_t **rresult) { su_localinfo_t *tbf = NULL, **lli = &tbf; su_localinfo_t *li = NULL, *li_first = NULL; su_sockaddr_t *su; int error = ELI_NOADDRESS; char *canonname = NULL; su_socket_t s; #if SU_HAVE_IN6 int su_xtra = (hints->li_flags & LI_V4MAPPED) ? sizeof(*su) : 0; #else int const su_xtra = 0; #endif struct ifconf ifc; int numifs; char *buffer; struct ifreq *ifr, *ifr_next; #if HAVE_OPEN_C su_sockaddr_t *sa; socklen_t salen = sizeof(*sa); #endif s = su_socket(AF_INET, SOCK_DGRAM, 0); if (s == -1) { SU_DEBUG_1(("su_localinfo: su_socket failed: %s\n", su_strerror(su_errno()))); return ELI_SYSTEM; } # if HAVE_IFNUM /* Get the list of known IP address from the kernel */ if (ioctl(s, SIOCGIFNUM, (char *) &numifs) < 0) { /* can't get number of interfaces -- fall back */ SU_DEBUG_1(("su_localinfo: SIOCGIFNUM failed: %s\n", su_strerror(su_errno()))); error = ELI_SYSTEM; goto err; } SU_DEBUG_9(("su_localinfo: %d active interfaces according to SIOCGIFNUM\n", numifs)); if (numifs < 0) # endif /* Default to 64 interfaces. Enough? */ numifs = 64; if (numifs == 0) return 0; /* * Allocate memory for SIOCGIFCONF ioctl buffer. This memory block is also * used as li_first, first localinfo struct that is returned, so it can be * freed by freelocalinfo() without any complications. */ ifc.ifc_len = numifs * sizeof (struct ifreq); buffer = malloc(sizeof(su_localinfo_t) + ifc.ifc_len + su_xtra); if (!buffer) { SU_DEBUG_1(("su_localinfo: memory exhausted\n" VA_NONE)); error = ELI_MEMORY; goto err; } li_first = (su_localinfo_t *)buffer; memset(li_first, 0, sizeof(su_localinfo_t) + su_xtra); ifc.ifc_buf = buffer + sizeof(su_localinfo_t) + su_xtra; #if HAVE_OPEN_C if (ioctl(s, SIOCGIFACTIVECONF, (char *)&ifc) < 0) { SU_DEBUG_1(("su_localinfo: SIOCGIFCONF failed: %s\n", su_strerror(su_errno()))); error = ELI_SYSTEM; goto err; } #else if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) { SU_DEBUG_1(("su_localinfo: SIOCGIFCONF failed: %s\n", su_strerror(su_errno()))); error = ELI_SYSTEM; goto err; } #endif buffer = ifc.ifc_buf + ifc.ifc_len; for (ifr = ifc.ifc_req; (void *)ifr < (void *)buffer; ifr = ifr_next) { struct ifreq ifreq[1]; int scope, if_index, flags = 0, gni_flags = 0; char *if_name; #if SU_HAVE_IN6 su_sockaddr_t su2[1]; #endif #if SA_LEN if (ifr->ifr_addr.sa_len > sizeof(ifr->ifr_addr)) ifr_next = (struct ifreq *) (ifr->ifr_addr.sa_len + (char *)(&ifr->ifr_addr)); else #else ifr_next = ifr + 1; #endif if_name = ifr->ifr_name; #if defined(SIOCGIFINDEX) ifreq[0] = *ifr; if (ioctl(s, SIOCGIFINDEX, ifreq) < 0) { SU_DEBUG_1(("su_localinfo: SIOCGIFINDEX failed: %s\n", su_strerror(su_errno()))); error = ELI_SYSTEM; goto err; } #if HAVE_IFR_INDEX if_index = ifreq->ifr_index; #elif HAVE_IFR_IFINDEX if_index = ifreq->ifr_ifindex; #else #error Unknown index field in struct ifreq #endif #else #warning su_localinfo() cannot map interface name to number if_index = 0; #endif SU_DEBUG_9(("su_localinfo: if %s with index %d\n", if_name, if_index)); #if HAVE_OPEN_C su_close(s); li = calloc(1, sizeof(su_localinfo_t)); sa = calloc(1, sizeof(su_sockaddr_t)); if (su_get_local_ip_addr(sa) < 0) goto err; li->li_family = sa->su_family; li->li_scope = LI_SCOPE_GLOBAL /* scope */; li->li_index = if_index; li->li_addrlen = su_sockaddr_size(sa); li->li_addr = sa; if ((error = li_name(hints, gni_flags, sa, &canonname)) < 0) goto err; if (canonname) { if (strchr(canonname, ':') || strspn(canonname, "0123456789.") == strlen(canonname)) li->li_flags |= LI_NUMERIC; } else li->li_flags = 0; li->li_canonname = canonname; canonname = NULL; *rresult = li; return 0; #endif #if defined(SIOCGIFFLAGS) ifreq[0] = *ifr; if (ioctl(s, SIOCGIFFLAGS, ifreq) < 0) { SU_DEBUG_1(("su_localinfo: SIOCGIFFLAGS failed: %s\n", su_strerror(su_errno()))); error = ELI_SYSTEM; goto err; } /* Do not include interfaces that are down unless explicitly asked */ if ((ifreq->ifr_flags & IFF_UP) == 0 && (hints->li_flags & LI_DOWN) == 0) { SU_DEBUG_9(("su_localinfo: if %s with index %d is down\n", if_name, if_index)); continue; } #elif defined(SIOCGIFACTIVECONF) /* Handled above in SIOCGIFACTIVECONF vs. SIOCGIFCONF*/ #else #error su_localinfo() cannot determine interface status #endif #if 0 *ifreq = *ifr; ifreq->ifr_addr.sa_family = AF_INET; if (ioctl(s, SIOCGIFADDR, ifreq) < 0) { SU_DEBUG_1(("su_localinfo: SIOCGIFADDR failed: %s\n", su_strerror(su_errno()))); error = ELI_SYSTEM; goto err; } ifr->ifr_addr = ifreq->ifr_addr; #endif su = (su_sockaddr_t *)&ifr->ifr_addr; if (SU_HAS_INADDR_ANY(su)) continue; scope = li_scope4(su->su_sin.sin_addr.s_addr); if ((hints->li_scope && (hints->li_scope & scope) == 0) || (hints->li_ifname && strcmp(hints->li_ifname, if_name) != 0) || (hints->li_index && hints->li_index != if_index)) continue; #if SU_HAVE_IN6 if (su_xtra) { /* Map IPv4 address to IPv6 address */ memset(su2, 0, sizeof(*su2)); su2->su_family = AF_INET6; ((int32_t*)&su2->su_sin6.sin6_addr)[2] = htonl(0xffff); ((int32_t*)&su2->su_sin6.sin6_addr)[3] = su->su_sin.sin_addr.s_addr; su = su2; } #endif if (scope == LI_SCOPE_HOST || scope == LI_SCOPE_LINK) gni_flags = NI_NUMERICHOST; if ((error = li_name(hints, gni_flags, su, &canonname)) < 0) goto err; else if (error > 0) continue; if (canonname) if (strchr(canonname, ':') || strspn(canonname, "0123456789.") == strlen(canonname)) flags |= LI_NUMERIC; if (li_first) li = li_first; /* Use li_first with all ifr structs to be freed */ else if (!(li = calloc(1, (sizeof *li) + su_xtra))) { error = ELI_MEMORY; goto err; } if (!tbf) tbf = li; *lli = li; lli = &li->li_next; if (su_xtra) su = (su_sockaddr_t *)memcpy(li + 1, su, su_xtra); li->li_flags = flags; li->li_family = su->su_family; li->li_scope = scope; li->li_index = if_index; li->li_addrlen = su_sockaddr_size(su); li->li_addr = su; li->li_canonname = canonname; li->li_ifname = if_name; canonname = NULL; li_first = NULL; } if (canonname) free(canonname); if (li_first) free(li_first); su_close(s); if (tbf) *rresult = tbf; return 0; err: if (canonname) free(canonname); if (li_first) free(li_first); su_freelocalinfo(tbf); su_close(s); return error; } #endif /* __APPLE_CC__ */ #else static int localinfo4(su_localinfo_t const *hints, su_localinfo_t **rresult) { /* Kikka #3: resolve hostname */ char hostname[SU_MAXHOST] = ""; char *name, *ifname; struct hostent *h; int i, flags, error, gni_flags = 0; su_localinfo_t *tbf = NULL; su_localinfo_t *li = NULL, **lli = &tbf; su_sockaddr_t *su; #if SU_HAVE_IN6 socklen_t su_sockaddr_size = (hints->li_flags & LI_V4MAPPED) ? sizeof(*su) : sizeof(struct sockaddr_in); flags = hints->li_flags & (LI_V4MAPPED|LI_CANONNAME|LI_NUMERIC|LI_IFNAME); #else socklen_t su_sockaddr_size = sizeof(struct sockaddr_in); flags = hints->li_flags & (LI_CANONNAME|LI_NUMERIC|LI_IFNAME); #endif error = ELI_NOERROR; if (hints->li_scope == 0 || (hints->li_scope & LI_SCOPE_GLOBAL)) { if (hints->li_canonname) name = hints->li_canonname; else if (gethostname(name = hostname, sizeof(hostname)) != 0) return ELI_SYSTEM; h = gethostbyname(name); if (name) if (strchr(name, ':') || strspn(name, "0123456789.") == strlen(name)) flags |= LI_NUMERIC; for (i = 0; h && h->h_addr_list[i]; i++) { if ((li = calloc(1, sizeof(*li) + su_sockaddr_size)) == NULL) { error = ELI_MEMORY; goto err; } li->li_flags = flags; li->li_scope = li_scope4(*(uint32_t *)h->h_addr_list[i]); if (li->li_scope == LI_SCOPE_HOST) li->li_index = 1, ifname = "lo"; else li->li_index = 2, ifname = "eth"; li->li_addrlen = su_sockaddr_size; li->li_addr = su = (su_sockaddr_t *)(li + 1); su->su_family = li->li_family = li->li_flags & LI_V4MAPPED ? AF_INET6 : AF_INET; #if SU_HAVE_IN6 if (li->li_flags & LI_V4MAPPED) { ((int32_t*)&su->su_sin6.sin6_addr)[2] = htonl(0xffff); memcpy(&((int32_t*)&su->su_sin6.sin6_addr)[3], h->h_addr_list[i], h->h_length); } else #endif memcpy(&su->su_sin.sin_addr.s_addr, h->h_addr_list[i], h->h_length); if (li->li_flags & LI_IFNAME) li->li_ifname = ifname; if (li->li_scope == LI_SCOPE_HOST || li->li_scope == LI_SCOPE_LINK) gni_flags = NI_NUMERICHOST; if ((error = li_name(hints, gni_flags, su, &li->li_canonname)) < 0) goto err; else if (error > 0) { free(li); li = NULL; continue; } else error = ELI_NOADDRESS; *lli = li; lli = &li->li_next; li = NULL; } } if (hints->li_scope == 0 || (hints->li_scope & LI_SCOPE_HOST)) { if ((li = calloc(1, sizeof(*li) + su_sockaddr_size)) == NULL) { error = ELI_MEMORY; goto err; } li->li_flags = hints->li_flags & (LI_V4MAPPED|LI_CANONNAME|LI_NUMERIC|LI_IFNAME); li->li_scope = LI_SCOPE_HOST, li->li_index = 1; if (li->li_flags & LI_IFNAME) li->li_ifname = "lo"; li->li_addrlen = su_sockaddr_size; li->li_addr = su = (su_sockaddr_t *)(li + 1); #if SU_HAVE_IN6 if (li->li_flags & LI_V4MAPPED) { su->su_family = li->li_family = AF_INET6; ((int32_t*)&su->su_sin6.sin6_addr)[2] = htonl(0xffff); ((int32_t*)&su->su_sin6.sin6_addr)[3] = htonl(0x7f000001); } else #endif su->su_family = li->li_family = AF_INET, su->su_sin.sin_addr.s_addr = htonl(0x7f000001); if ((error = li_name(hints, NI_NUMERICHOST, su, &li->li_canonname)) < 0) { goto err; } else if (error > 0) { free(li); li = NULL; } else { *lli = li; lli = &li->li_next; li = NULL; } } *rresult = tbf; return 0; err: if (li) su_freelocalinfo(li); su_freelocalinfo(tbf); return error; } #endif #if USE_LOCALINFO0 || !SU_HAVE_IN6 || SU_LOCALINFO_TEST /* No localinfo6() */ #elif HAVE_PROC_NET_IF_INET6 /** Build a list of local IPv6 addresses and append it to *return_result. */ static int localinfo6(su_localinfo_t const *hints, su_localinfo_t **return_result) { su_localinfo_t *li = NULL; su_sockaddr_t su[1] = {{ 0 }}, *addr; int error = ELI_NOADDRESS; char *canonname = NULL; char line[80]; FILE *f; if ((f = fopen("/proc/net/if_inet6", "r"))) { for (;error;) { struct in6_addr in6; unsigned if_index, prefix_len, scope, flags; int addrlen, if_namelen; char ifname[16]; if (!fgets(line, sizeof(line), f)) { if (feof(f)) error = ELI_NOERROR; break; } if (sscanf(line, "%08x%08x%08x%08x %2x %2x %2x %02x %016s\n", &in6.s6_addr32[0], &in6.s6_addr32[1], &in6.s6_addr32[2], &in6.s6_addr32[3], &if_index, &prefix_len, &scope, &flags, ifname) != 9) break; flags = 0; /* Fix global scope (it is 0) */ if (!scope) scope = LI_SCOPE_GLOBAL; in6.s6_addr32[0] = htonl(in6.s6_addr32[0]); in6.s6_addr32[1] = htonl(in6.s6_addr32[1]); in6.s6_addr32[2] = htonl(in6.s6_addr32[2]); in6.s6_addr32[3] = htonl(in6.s6_addr32[3]); if (IN6_IS_ADDR_V4MAPPED(&in6) || IN6_IS_ADDR_V4COMPAT(&in6)) { uint32_t ip4 = *(uint32_t *)(in6.s6_addr + 12); scope = li_scope4(ip4); } if ((hints->li_scope && (hints->li_scope & scope) == 0) || (hints->li_index && hints->li_index != if_index) || (hints->li_ifname && strcmp(hints->li_ifname, ifname) != 0)) continue; su->su_family = AF_INET6; su->su_sin6.sin6_addr = in6; addrlen = su_sockaddr_size(su); if ((error = li_name(hints, 0, su, &canonname)) < 0) break; else if (error > 0) continue; else error = ELI_NOADDRESS; if (canonname && (strchr(canonname, ':') || strspn(canonname, "0123456789.") == strlen(canonname))) flags |= LI_NUMERIC; if (hints->li_flags & LI_IFNAME) if_namelen = strlen(ifname) + 1; else if_namelen = 0; if ((li = calloc(1, sizeof *li + addrlen + if_namelen)) == NULL) { error = ELI_MEMORY; break; } addr = (su_sockaddr_t*)memcpy((li + 1), su, addrlen); *return_result = li; return_result = &li->li_next; li->li_flags = flags; li->li_family = AF_INET6; li->li_scope = scope; li->li_index = if_index; li->li_addr = addr; li->li_addrlen = addrlen; li->li_canonname = canonname; if (if_namelen) li->li_ifname = memcpy(addrlen + (char *)addr, ifname, if_namelen); canonname = NULL; } fclose(f); } if (canonname) free(canonname); return error; } #else /* Use HOSTADDR6 */ static int localinfo6(su_localinfo_t const *hints, su_localinfo_t **rresult) { char *addr, *ifname; int flags, error; su_localinfo_t *li = NULL; su_sockaddr_t *su; int const su_sockaddr_size = sizeof(*su); error = ELI_NOADDRESS; #if defined(__APPLE_CC__) { su_sockaddr_t *sa; int salen = sizeof(*sa); int s; if (hints->li_scope == 0 || (hints->li_scope & LI_SCOPE_GLOBAL)) { if ((addr = getenv("HOSTADDR6"))) { li = calloc(1, sizeof(su_localinfo_t)); sa = calloc(1, sizeof(su_sockaddr_t)); sa->su_family = AF_INET6; if (su_inet_pton(AF_INET6, addr, &sa->su_sin6.sin6_addr) <= 0) goto err; s = su_socket(AF_INET6, SOCK_DGRAM, 0); if (s == -1) { SU_DEBUG_1(("su_localinfo: su_socket failed: %s\n", su_strerror(su_errno()))); return ELI_SYSTEM; } error = getsockname(s, (struct sockaddr *) sa, &salen); if (error < 0 && errno == SOCKET_ERROR) { SU_DEBUG_1(("%s: getsockname() failed: %s\n", __func__, su_strerror(su_errno()))); } error = bind(s, (struct sockaddr *) sa, salen); if (error < 0) { SU_DEBUG_1(("%s: bind() failed: %s\n", __func__, su_strerror(su_errno()))); goto err; } su_close(s); li->li_family = sa->su_family; li->li_scope = LI_SCOPE_GLOBAL; li->li_index = 0; li->li_addrlen = su_sockaddr_size(sa); li->li_addr = sa; if ((error = li_name(hints, NI_NUMERICHOST, sa, &li->li_canonname)) < 0) goto err; li->li_flags = NI_NUMERICHOST; } } *rresult = li; return 0; } #endif if (hints->li_scope == 0 || (hints->li_scope & LI_SCOPE_GLOBAL)) { if ((addr = getenv("HOSTADDR6"))) { flags = hints->li_flags & (LI_CANONNAME|LI_NUMERIC|LI_IFNAME); if ((li = calloc(1, sizeof(*li) + su_sockaddr_size)) == NULL) { error = ELI_MEMORY; goto err; } li->li_flags = flags; li->li_scope = LI_SCOPE_GLOBAL, li->li_index = 2, ifname = "eth"; li->li_addrlen = sizeof(*su); li->li_addr = su = (su_sockaddr_t *)(li + 1); su->su_family = li->li_family = AF_INET6; if (su_inet_pton(AF_INET6, addr, &su->su_sin6.sin6_addr) <= 0) goto err; if (li->li_flags & LI_IFNAME) li->li_ifname = ifname; if ((error = li_name(hints, NI_NUMERICHOST, su, &li->li_canonname)) < 0) goto err; else if (error > 0) { free(li); li = NULL; } } } *rresult = li; return 0; err: if (li) su_freelocalinfo(li); return error; } #endif #if !USE_LOCALINFO0 /* no localinfo0() or bsd_localinfo() */ #elif HAVE_GETIFADDRS #include static int bsd_localinfo(su_localinfo_t const hints[1], su_localinfo_t **return_result) { struct ifaddrs *ifa, *results; int error = 0; #if SU_HAVE_IN6 int v4_mapped = (hints->li_flags & LI_V4MAPPED) != 0; #endif char *canonname = NULL; if (getifaddrs(&results) < 0) { if (errno == ENOMEM) return ELI_MEMORY; else return ELI_SYSTEM; } for (ifa = results; ifa; ifa = ifa->ifa_next) { su_localinfo_t *li; su_sockaddr_t *su; #if SU_HAVE_IN6 su_sockaddr_t su2[1]; #endif socklen_t sulen; int scope, flags = 0, gni_flags = 0, if_index = 0; char const *ifname = 0; size_t ifnamelen = 0; /* no ip address from if that is down */ if ((ifa->ifa_flags & IFF_UP) == 0 && (hints->li_flags & LI_DOWN) == 0) continue; su = (su_sockaddr_t *)ifa->ifa_addr; if (!su) continue; if (su->su_family == AF_INET) { sulen = sizeof(su->su_sin); scope = li_scope4(su->su_sin.sin_addr.s_addr); #if SU_HAVE_IN6 if (v4_mapped) sulen = sizeof(su->su_sin6); #endif } #if SU_HAVE_IN6 else if (su->su_family == AF_INET6) { if (IN6_IS_ADDR_MULTICAST(&su->su_sin6.sin6_addr)) continue; sulen = sizeof(su->su_sin6); scope = li_scope6(&su->su_sin6.sin6_addr); } #endif else continue; if (hints->li_flags & LI_IFNAME) { ifname = ifa->ifa_name; if (ifname) ifnamelen = strlen(ifname) + 1; } if ((hints->li_scope && (hints->li_scope & scope) == 0) || (hints->li_family && hints->li_family != su->su_family) || (hints->li_ifname && (!ifname || strcmp(hints->li_ifname, ifname))) || (hints->li_index && hints->li_index != if_index)) continue; if (scope == LI_SCOPE_HOST || scope == LI_SCOPE_LINK) gni_flags = NI_NUMERICHOST; #if SU_HAVE_IN6 if (v4_mapped && su->su_family == AF_INET) { /* Map IPv4 address to IPv6 address */ memset(su2, 0, sizeof(*su2)); su2->su_family = AF_INET6; ((int32_t*)&su2->su_sin6.sin6_addr)[2] = htonl(0xffff); ((int32_t*)&su2->su_sin6.sin6_addr)[3] = su->su_sin.sin_addr.s_addr; su = su2; } #endif if ((error = li_name(hints, gni_flags, su, &canonname)) < 0) break; if (error > 0) { error = 0; continue; } if (canonname) if (strchr(canonname, ':') || canonname[strspn(canonname, "0123456789.")] == '\0') flags |= LI_NUMERIC; if (!(li = calloc(1, sizeof(*li) + sulen + ifnamelen))) { SU_DEBUG_1(("su_getlocalinfo: memory exhausted\n" VA_NONE)); error = ELI_MEMORY; break; } *return_result = li, return_result = &li->li_next; li->li_flags = flags; li->li_family = su->su_family; li->li_scope = scope; li->li_index = if_index; li->li_addrlen = sulen; li->li_addr = memcpy(li + 1, su, sulen); li->li_canonname = canonname; if (ifnamelen) { li->li_ifname = strcpy((char *)(li + 1) + sulen, ifname); } canonname = NULL; } if (canonname) free(canonname); freeifaddrs(results); return error; } #elif USE_LOCALINFO0 && HAVE_IPHLPAPI_H && SU_HAVE_IN6 static char const *ws2ifname(DWORD iftype) { switch (iftype) { case IF_TYPE_ETHERNET_CSMACD: return "eth"; case IF_TYPE_IEEE80212: return "eth"; case IF_TYPE_FASTETHER: return "eth"; case IF_TYPE_GIGABITETHERNET: return "eth"; case IF_TYPE_ISO88025_TOKENRING: return "token"; case IF_TYPE_FDDI: return "fddi"; case IF_TYPE_PPP: return "ppp"; case IF_TYPE_SOFTWARE_LOOPBACK: return "lo"; case IF_TYPE_SLIP: return "sl"; case IF_TYPE_FRAMERELAY: return "fr"; case IF_TYPE_ATM: return "atm"; case IF_TYPE_HIPPI: return "hippi"; case IF_TYPE_ISDN: return "isdn"; case IF_TYPE_IEEE80211: return "wlan"; case IF_TYPE_ADSL: return "adsl"; case IF_TYPE_RADSL: return "radsl"; case IF_TYPE_SDSL: return "sdsl"; case IF_TYPE_VDSL: return "vdsl"; case IF_TYPE_TUNNEL: return "tunnel"; case IF_TYPE_IEEE1394: return "fw"; case IF_TYPE_OTHER: default: return "other"; } } static int win_localinfo(su_localinfo_t const hints[1], su_localinfo_t **rresult) { /* This is Windows XP code, for both IPv6 and IPv4. */ ULONG iaa_size = 2048; IP_ADAPTER_ADDRESSES *iaa0, *iaa; int error, loopback_seen = 0; int v4_mapped = (hints->li_flags & LI_V4MAPPED) != 0; char *canonname = NULL; su_localinfo_t *li, **next; int flags = GAA_FLAG_SKIP_MULTICAST; *rresult = NULL; next = rresult; iaa0 = malloc((size_t)iaa_size); if (!iaa0) { SU_DEBUG_1(("su_localinfo: memory exhausted\n")); error = ELI_MEMORY; goto err; } error = GetAdaptersAddresses(hints->li_family, flags, NULL, iaa0, &iaa_size); if (error == ERROR_BUFFER_OVERFLOW) { if ((iaa0 = realloc(iaa0, iaa_size))) error = GetAdaptersAddresses(hints->li_family, flags, NULL, iaa0, &iaa_size); } if (error) { char const *empty = ""; LPTSTR msg = empty; if (error == ERROR_NO_DATA) { error = ELI_NOADDRESS; goto err; } if (!FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), msg, 0, NULL)) msg = empty; SU_DEBUG_1(("su_localinfo: GetAdaptersAddresses: %s (%d)\n", msg, error)); if (msg != empty) LocalFree((LPVOID)msg); error = ELI_SYSTEM; goto err; } for (iaa = iaa0; iaa; iaa = iaa->Next) { IP_ADAPTER_UNICAST_ADDRESS *ua; IP_ADAPTER_UNICAST_ADDRESS lua[1]; int if_index = iaa->IfIndex; size_t ifnamelen = 0; char ifname[16]; for (ua = iaa->FirstUnicastAddress; ;ua = ua->Next) { su_sockaddr_t *su; socklen_t sulen; su_sockaddr_t su2[1]; int scope, flags = 0, gni_flags = 0; if (ua == NULL) { /* There is no loopback interface in windows */ if (!loopback_seen && iaa->Next == NULL) { struct sockaddr_in loopback_sin = { AF_INET, 0, {{ 127, 0, 0, 1 }}}; lua->Address.lpSockaddr = (struct sockaddr *)&loopback_sin; lua->Address.iSockaddrLength = sizeof(loopback_sin); lua->Next = NULL; iaa->IfType = IF_TYPE_SOFTWARE_LOOPBACK; if_index = 1; ua = lua; } else break; } su = (su_sockaddr_t *)ua->Address.lpSockaddr; sulen = ua->Address.iSockaddrLength; if (su->su_family == AF_INET) { scope = li_scope4(su->su_sin.sin_addr.s_addr); if (v4_mapped) sulen = sizeof(su->su_sin6); if (scope == LI_SCOPE_HOST) loopback_seen = 1; } else if (su->su_family == AF_INET6) { if (IN6_IS_ADDR_MULTICAST(&su->su_sin6.sin6_addr)) continue; scope = li_scope6(&su->su_sin6.sin6_addr); } else continue; if (hints->li_flags & LI_IFNAME) { snprintf(ifname, sizeof(ifname), "%s%u", ws2ifname(iaa->IfType), if_index); ifnamelen = strlen(ifname) + 1; } if ((hints->li_scope && (hints->li_scope & scope) == 0) || (hints->li_family && hints->li_family != su->su_family) || /* (hints->li_ifname && strcmp(hints->li_ifname, ifname) != 0) || */ (hints->li_index && hints->li_index != if_index)) continue; if (scope == LI_SCOPE_HOST || scope == LI_SCOPE_LINK) gni_flags = NI_NUMERICHOST; if (v4_mapped && su->su_family == AF_INET) { /* Map IPv4 address to IPv6 address */ memset(su2, 0, sizeof(*su2)); su2->su_family = AF_INET6; ((int32_t*)&su2->su_sin6.sin6_addr)[2] = htonl(0xffff); ((int32_t*)&su2->su_sin6.sin6_addr)[3] = su->su_sin.sin_addr.s_addr; su = su2; } if ((error = li_name(hints, gni_flags, su, &canonname)) < 0) goto err; else if (error > 0) continue; if (canonname) if (strchr(canonname, ':') || strspn(canonname, "0123456789.") == strlen(canonname)) flags |= LI_NUMERIC; if (!(li = calloc(1, sizeof(*li) + sulen + ifnamelen))) { SU_DEBUG_1(("su_getlocalinfo: memory exhausted\n")); error = ELI_MEMORY; goto err; } *next = li, next = &li->li_next; li->li_flags = flags; li->li_family = su->su_family; li->li_scope = scope; li->li_index = if_index; li->li_addrlen = sulen; li->li_addr = memcpy(li + 1, su, sulen); li->li_canonname = canonname; if (ifnamelen) { li->li_ifname = strcpy((char *)(li + 1) + sulen, ifname); /* WideCharToMultiByte(CP_ACP, 0, ifname, -1, (char *)(li + 1) + sulen, ifnamelen, NULL, NULL); */ } canonname = NULL; } } if (iaa0) free(iaa0); return 0; err: if (iaa0) free(iaa0); if (canonname) free(canonname); su_freelocalinfo(*rresult), *rresult = NULL; return error; } #elif HAVE_SIO_ADDRESS_LIST_QUERY static int localinfo0(su_localinfo_t const *hints, su_localinfo_t **rresult) { /* This is Windows IPv4 code */ short family = AF_INET; su_socket_t s; union { SOCKET_ADDRESS_LIST sal[1]; #if HAVE_INTERFACE_INFO_EX INTERFACE_INFO_EX ii[1]; #else INTERFACE_INFO ii[1]; #endif char buffer[2048]; } b = {{ 1 }}; DWORD salen = sizeof(b); int i, error = -1; #if SU_HAVE_IN6 int v4_mapped = (hints->li_flags & LI_V4MAPPED) != 0; #endif su_localinfo_t *li, *head = NULL, **next = &head; char *canonname = NULL, *if_name = NULL; *rresult = NULL; s = su_socket(family, SOCK_DGRAM, 0); if (s == INVALID_SOCKET) { SU_DEBUG_1(("su_getlocalinfo: %s: %s\n", "su_socket", su_strerror(su_errno()))); return -1; } /* get the list of known IP address (NT5 and up) */ if (WSAIoctl(s, SIO_ADDRESS_LIST_QUERY, NULL, 0, &b, sizeof(b), &salen, NULL, NULL) == SOCKET_ERROR) { SU_DEBUG_1(("su_getlocalinfo: %s: %s\n", "SIO_ADDRESS_LIST_QUERY", su_strerror(su_errno()))); error = -1; goto err; } if (b.sal->iAddressCount < 1) { SU_DEBUG_1(("su_getlocalinfo: no local addresses\n")); error = -1; goto err; } for (i = 0; i < b.sal->iAddressCount; i++) { su_sockaddr_t *su = (su_sockaddr_t *)b.sal->Address[i].lpSockaddr; #if SU_HAVE_IN6 socklen_t sulen = v4_mapped ? sizeof(*su) : b.sal->Address[i].iSockaddrLength; su_sockaddr_t su2[1]; #else socklen_t sulen = b.sal->Address[i].iSockaddrLength; #endif int scope, flags = 0, gni_flags = 0; scope = li_scope4(su->su_sin.sin_addr.s_addr); if (hints->li_scope && (hints->li_scope & scope) == 0) continue; if (scope == LI_SCOPE_HOST || scope == LI_SCOPE_LINK) gni_flags = NI_NUMERICHOST; if (!(li = calloc(1, sizeof(*li) + sulen))) { SU_DEBUG_1(("su_getlocalinfo: memory exhausted\n")); error = -1; goto err; } *next = li, next = &li->li_next; #if SU_HAVE_IN6 if (v4_mapped) { /* Map IPv4 address to IPv6 address */ memset(su2, 0, sizeof(*su2)); su2->su_family = AF_INET6; ((int32_t*)&su2->su_sin6.sin6_addr)[2] = htonl(0xffff); ((int32_t*)&su2->su_sin6.sin6_addr)[3] = su->su_sin.sin_addr.s_addr; su = su2; } #endif if ((error = li_name(hints, gni_flags, su, &canonname)) < 0) goto err; else if (error > 0) continue; if (canonname) if (strchr(canonname, ':') || strspn(canonname, "0123456789.") == strlen(canonname)) flags |= LI_NUMERIC; li->li_flags = flags; li->li_family = su->su_family; li->li_scope = scope; li->li_index = i; li->li_addrlen = su_sockaddr_size(su); li->li_addr = su; li->li_canonname = canonname, canonname = NULL; if (hints->li_flags & LI_IFNAME) li->li_ifname = if_name; li->li_addr = (su_sockaddr_t *)(li + 1); li->li_addrlen = sulen; memcpy(li->li_addr, su, sulen); } *rresult = head; su_close(s); return 0; err: if (canonname) free(canonname); su_freelocalinfo(head); su_close(s); return error; } #endif #if !SU_LOCALINFO_TEST static int li_name(su_localinfo_t const *hints, int gni_flags, su_sockaddr_t const *su, char **ccanonname) { char name[SU_MAXHOST]; int error; int flags = hints->li_flags; *ccanonname = NULL; if ((flags & LI_CANONNAME) || hints->li_canonname) { if ((flags & LI_NAMEREQD) == LI_NAMEREQD) gni_flags |= NI_NAMEREQD; if (flags & LI_NUMERIC) gni_flags |= NI_NUMERICHOST; error = su_getnameinfo(su, su_sockaddr_size(su), name, sizeof(name), NULL, 0, gni_flags); if (error) { if ((flags & LI_NAMEREQD) == LI_NAMEREQD) return 1; SU_DEBUG_7(("li_name: getnameinfo() failed\n" VA_NONE)); if (!su_inet_ntop(su->su_family, SU_ADDR(su), name, sizeof name)) return ELI_RESOLVER; } if (hints->li_canonname && !su_casematch(name, hints->li_canonname)) return 1; if (!(flags & LI_CANONNAME)) return 0; if (!(*ccanonname = strdup(name))) return ELI_MEMORY; } return 0; } static void li_sort(su_localinfo_t *i, su_localinfo_t **rresult) { su_localinfo_t *li, **lli; #define LI_MAPPED(li) \ ((li)->li_family == AF_INET6 && \ (IN6_IS_ADDR_V4MAPPED(&(li)->li_addr->su_sin6.sin6_addr) || \ IN6_IS_ADDR_V4COMPAT(&(li)->li_addr->su_sin6.sin6_addr))) /* Sort addresses according to scope (and mappedness) */ for (li = i; li; li = i) { i = li->li_next; for (lli = rresult; *lli; lli = &(*lli)->li_next) { if ((*lli)->li_scope < li->li_scope) break; #if SU_HAVE_IN6 if (LI_MAPPED(*lli) > LI_MAPPED(li)) break; #endif } li->li_next = *lli; *lli = li; } } #endif /**Get local IP address. * * @deprecated * Use su_getlocalinfo() instead. */ int su_getlocalip(su_sockaddr_t *sa) { su_localinfo_t *li = NULL, hints[1] = {{ 0 }}; hints->li_family = sa->su_sa.sa_family ? sa->su_sa.sa_family : AF_INET; if (su_getlocalinfo(hints, &li) == 0) { memcpy(sa, li->li_addr, li->li_addrlen); su_freelocalinfo(li); return 0; } else return -1; }