diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/getaddrs.c')
| -rw-r--r-- | crypto/kerberosIV/lib/krb/getaddrs.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/getaddrs.c b/crypto/kerberosIV/lib/krb/getaddrs.c new file mode 100644 index 0000000..c4ee6ad --- /dev/null +++ b/crypto/kerberosIV/lib/krb/getaddrs.c @@ -0,0 +1,156 @@ +/* + * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include "krb_locl.h" + +RCSID("$Id: getaddrs.c,v 1.28.2.1 2000/06/23 03:29:53 assar Exp $"); + +#if defined(HAVE_SYS_IOCTL_H) && SunOS != 40 +#include <sys/ioctl.h> +#endif +#ifdef HAVE_NET_IF_H +#ifdef __osf__ +struct rtentry; +struct mbuf; +#endif +#ifdef _AIX +#undef __P /* XXX hack for AIX 4.3 */ +#endif +#include <net/if.h> +#endif + +#ifdef HAVE_SYS_SOCKIO_H +#include <sys/sockio.h> +#endif /* HAVE_SYS_SOCKIO_H */ + +/* + * Return number and list of all local adresses. + */ + +int +k_get_all_addrs (struct in_addr **l) +{ +#if !defined(SIOCGIFCONF) || !defined(SIOCGIFFLAGS) || !defined(SIOCGIFADDR) + char name[MaxHostNameLen]; + struct hostent *he; + + if (gethostname(name, sizeof(name)) < 0) + return -1; + he = gethostbyname (name); + if (he == NULL) + return -1; + *l = malloc(sizeof(**l)); + if (*l == NULL) + return -1; + memcpy (*l, he->h_addr_list[0], sizeof(*l)); + return 1; +#else + int fd; + char *inbuf = NULL; + size_t in_len = 8192; + struct ifreq ifreq; + struct ifconf ifconf; + int num, j; + char *p; + size_t sz; + + *l = NULL; + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) + return -1; + + for(;;) { + void *tmp; + + tmp = realloc (inbuf, in_len); + if (tmp == NULL) + goto fail; + inbuf = tmp; + + ifconf.ifc_len = in_len; + ifconf.ifc_buf = inbuf; + + /* + * Solaris returns EINVAL when the buffer is too small. + */ + + if(ioctl(fd, SIOCGIFCONF, &ifconf) < 0 && errno != EINVAL) + goto fail; + if(ifconf.ifc_len + sizeof(ifreq) < in_len) + break; + in_len *= 2; + } + num = ifconf.ifc_len / sizeof(struct ifreq); + *l = malloc(num * sizeof(struct in_addr)); + if(*l == NULL) + goto fail; + + j = 0; + ifreq.ifr_name[0] = '\0'; + for (p = ifconf.ifc_buf; p < ifconf.ifc_buf + ifconf.ifc_len; p += sz) { + struct ifreq *ifr = (struct ifreq *)p; + sz = sizeof(*ifr); +#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN + sz = max(sz, sizeof(ifr->ifr_name) + ifr->ifr_addr.sa_len); +#endif + + if(strncmp(ifreq.ifr_name, ifr->ifr_name, sizeof(ifr->ifr_name))) { + if(ioctl(fd, SIOCGIFFLAGS, ifr) < 0) + continue; + if (ifr->ifr_flags & IFF_UP) { + if(ioctl(fd, SIOCGIFADDR, ifr) < 0) + continue; + (*l)[j++] = ((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr; + } + memcpy(&ifreq, ifr, sizeof(ifreq)); + } + } + if (j != num) { + void *tmp; + tmp = realloc (*l, j * sizeof(struct in_addr)); + if(tmp == NULL) + goto fail; + *l = tmp; + } + close (fd); + free(inbuf); + return j; +fail: + close(fd); + free(inbuf); + free(*l); + return -1; +#endif /* SIOCGIFCONF */ +} |
