1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1991-2003 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SunOS */ 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <stdio.h> 30*0Sstevel@tonic-gate #include <ctype.h> 31*0Sstevel@tonic-gate #include <sys/types.h> 32*0Sstevel@tonic-gate #include <sys/socket.h> 33*0Sstevel@tonic-gate #include <sys/sockio.h> 34*0Sstevel@tonic-gate #include <net/if.h> 35*0Sstevel@tonic-gate #include <netinet/in_systm.h> 36*0Sstevel@tonic-gate #include <netinet/in.h> 37*0Sstevel@tonic-gate #include <netinet/if_ether.h> 38*0Sstevel@tonic-gate #include <netinet/ip.h> 39*0Sstevel@tonic-gate #include <netdb.h> 40*0Sstevel@tonic-gate #include <string.h> 41*0Sstevel@tonic-gate #include <signal.h> 42*0Sstevel@tonic-gate #include <setjmp.h> 43*0Sstevel@tonic-gate 44*0Sstevel@tonic-gate sigjmp_buf nisjmp; 45*0Sstevel@tonic-gate 46*0Sstevel@tonic-gate #define MAXHASH 1024 /* must be a power of 2 */ 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate #define SEPARATORS " \t\n" 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate struct hostdata { 51*0Sstevel@tonic-gate struct hostdata *h_next; 52*0Sstevel@tonic-gate char *h_hostname; 53*0Sstevel@tonic-gate int h_pktsout; 54*0Sstevel@tonic-gate int h_pktsin; 55*0Sstevel@tonic-gate }; 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate struct hostdata4 { 58*0Sstevel@tonic-gate struct hostdata4 *h4_next; 59*0Sstevel@tonic-gate char *h4_hostname; 60*0Sstevel@tonic-gate int h4_pktsout; 61*0Sstevel@tonic-gate int h4_pktsin; 62*0Sstevel@tonic-gate struct in_addr h4_addr; 63*0Sstevel@tonic-gate }; 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate struct hostdata6 { 66*0Sstevel@tonic-gate struct hostdata6 *h6_next; 67*0Sstevel@tonic-gate char *h6_hostname; 68*0Sstevel@tonic-gate int h6_pktsout; 69*0Sstevel@tonic-gate int h6_pktsin; 70*0Sstevel@tonic-gate struct in6_addr h6_addr; 71*0Sstevel@tonic-gate }; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate struct hostdata *addhost(); 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate struct hostdata4 *h_table4[MAXHASH]; 76*0Sstevel@tonic-gate struct hostdata6 *h_table6[MAXHASH]; 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate #define iphash(e) ((e) & (MAXHASH-1)) 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate static void 81*0Sstevel@tonic-gate wakeup(n) 82*0Sstevel@tonic-gate int n; 83*0Sstevel@tonic-gate { 84*0Sstevel@tonic-gate siglongjmp(nisjmp, 1); 85*0Sstevel@tonic-gate } 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate extern char *inet_ntoa(); 88*0Sstevel@tonic-gate extern boolean_t rflg; 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate static struct hostdata * 91*0Sstevel@tonic-gate iplookup(struct in_addr ipaddr) 92*0Sstevel@tonic-gate { 93*0Sstevel@tonic-gate register struct hostdata4 *h; 94*0Sstevel@tonic-gate struct hostent *hp = NULL; 95*0Sstevel@tonic-gate struct netent *np; 96*0Sstevel@tonic-gate int error_num; 97*0Sstevel@tonic-gate struct hostdata *retval; 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate for (h = h_table4[iphash(ipaddr.s_addr)]; h; h = h->h4_next) { 100*0Sstevel@tonic-gate if (h->h4_addr.s_addr == ipaddr.s_addr) 101*0Sstevel@tonic-gate return ((struct hostdata *)h); 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate 104*0Sstevel@tonic-gate /* not found. Put it in */ 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate if (ipaddr.s_addr == htonl(INADDR_BROADCAST)) 107*0Sstevel@tonic-gate return (addhost(AF_INET, &ipaddr, "BROADCAST", NULL)); 108*0Sstevel@tonic-gate if (ipaddr.s_addr == htonl(INADDR_ANY)) 109*0Sstevel@tonic-gate return (addhost(AF_INET, &ipaddr, "OLD-BROADCAST", NULL)); 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate /* 112*0Sstevel@tonic-gate * Set an alarm here so we don't get held up by 113*0Sstevel@tonic-gate * an unresponsive name server. 114*0Sstevel@tonic-gate * Give it 3 sec to do its work. 115*0Sstevel@tonic-gate */ 116*0Sstevel@tonic-gate if (! rflg && sigsetjmp(nisjmp, 1) == 0) { 117*0Sstevel@tonic-gate (void) snoop_alarm(3, wakeup); 118*0Sstevel@tonic-gate hp = getipnodebyaddr((char *)&ipaddr, sizeof (int), 119*0Sstevel@tonic-gate AF_INET, &error_num); 120*0Sstevel@tonic-gate if (hp == NULL && inet_lnaof(ipaddr) == 0) { 121*0Sstevel@tonic-gate np = getnetbyaddr(inet_netof(ipaddr), AF_INET); 122*0Sstevel@tonic-gate if (np) 123*0Sstevel@tonic-gate return (addhost(AF_INET, &ipaddr, np->n_name, 124*0Sstevel@tonic-gate np->n_aliases)); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate (void) snoop_alarm(0, wakeup); 127*0Sstevel@tonic-gate } 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate retval = addhost(AF_INET, &ipaddr, 130*0Sstevel@tonic-gate hp ? hp->h_name : inet_ntoa(ipaddr), 131*0Sstevel@tonic-gate hp ? hp->h_aliases : NULL); 132*0Sstevel@tonic-gate if (hp != NULL) 133*0Sstevel@tonic-gate freehostent(hp); 134*0Sstevel@tonic-gate return (retval); 135*0Sstevel@tonic-gate } 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate static struct hostdata * 138*0Sstevel@tonic-gate ip6lookup(ip6addr) 139*0Sstevel@tonic-gate struct in6_addr *ip6addr; 140*0Sstevel@tonic-gate { 141*0Sstevel@tonic-gate struct hostdata6 *h; 142*0Sstevel@tonic-gate struct hostent *hp = NULL; 143*0Sstevel@tonic-gate int error_num; 144*0Sstevel@tonic-gate char addrstr[INET6_ADDRSTRLEN]; 145*0Sstevel@tonic-gate const char *addname; 146*0Sstevel@tonic-gate struct hostdata *retval; 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate for (h = h_table6[iphash(((uint32_t *)ip6addr)[3])]; h; 149*0Sstevel@tonic-gate h = h->h6_next) { 150*0Sstevel@tonic-gate if (IN6_ARE_ADDR_EQUAL(&h->h6_addr, ip6addr)) 151*0Sstevel@tonic-gate return ((struct hostdata *)h); 152*0Sstevel@tonic-gate } 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate /* not in the hash table, put it in */ 155*0Sstevel@tonic-gate if (IN6_IS_ADDR_UNSPECIFIED(ip6addr)) 156*0Sstevel@tonic-gate return (addhost(AF_INET6, ip6addr, "UNSPECIFIED", NULL)); 157*0Sstevel@tonic-gate 158*0Sstevel@tonic-gate /* 159*0Sstevel@tonic-gate * Set an alarm here so we don't get held up by 160*0Sstevel@tonic-gate * an unresponsive name server. 161*0Sstevel@tonic-gate * Give it 3 sec to do its work. 162*0Sstevel@tonic-gate */ 163*0Sstevel@tonic-gate if (! rflg && sigsetjmp(nisjmp, 1) == 0) { 164*0Sstevel@tonic-gate (void) snoop_alarm(3, wakeup); 165*0Sstevel@tonic-gate hp = getipnodebyaddr(ip6addr, sizeof (struct in6_addr), 166*0Sstevel@tonic-gate AF_INET6, &error_num); 167*0Sstevel@tonic-gate (void) snoop_alarm(0, wakeup); 168*0Sstevel@tonic-gate } else { 169*0Sstevel@tonic-gate hp = NULL; 170*0Sstevel@tonic-gate } 171*0Sstevel@tonic-gate 172*0Sstevel@tonic-gate if (hp != NULL) 173*0Sstevel@tonic-gate addname = hp->h_name; 174*0Sstevel@tonic-gate else { 175*0Sstevel@tonic-gate (void) inet_ntop(AF_INET6, ip6addr, addrstr, INET6_ADDRSTRLEN); 176*0Sstevel@tonic-gate addname = addrstr; 177*0Sstevel@tonic-gate } 178*0Sstevel@tonic-gate 179*0Sstevel@tonic-gate retval = addhost(AF_INET6, ip6addr, addname, hp ? hp->h_aliases : NULL); 180*0Sstevel@tonic-gate if (hp != NULL) 181*0Sstevel@tonic-gate freehostent(hp); 182*0Sstevel@tonic-gate return (retval); 183*0Sstevel@tonic-gate } 184*0Sstevel@tonic-gate 185*0Sstevel@tonic-gate static struct hostdata * 186*0Sstevel@tonic-gate addhost(family, ipaddr, name, aliases) 187*0Sstevel@tonic-gate int family; 188*0Sstevel@tonic-gate void *ipaddr; 189*0Sstevel@tonic-gate char *name; 190*0Sstevel@tonic-gate char **aliases; 191*0Sstevel@tonic-gate { 192*0Sstevel@tonic-gate register struct hostdata **hp, *n = NULL; 193*0Sstevel@tonic-gate extern FILE *namefile; 194*0Sstevel@tonic-gate int hashval; 195*0Sstevel@tonic-gate static char aname[128]; 196*0Sstevel@tonic-gate char *np; 197*0Sstevel@tonic-gate static struct hostdata h; 198*0Sstevel@tonic-gate int ind; 199*0Sstevel@tonic-gate 200*0Sstevel@tonic-gate switch (family) { 201*0Sstevel@tonic-gate case AF_INET: 202*0Sstevel@tonic-gate n = (struct hostdata *)malloc(sizeof (struct hostdata4)); 203*0Sstevel@tonic-gate if (n == NULL) 204*0Sstevel@tonic-gate goto alloc_failed; 205*0Sstevel@tonic-gate 206*0Sstevel@tonic-gate memset(n, 0, sizeof (struct hostdata4)); 207*0Sstevel@tonic-gate n->h_hostname = strdup(name); 208*0Sstevel@tonic-gate if (n->h_hostname == NULL) 209*0Sstevel@tonic-gate goto alloc_failed; 210*0Sstevel@tonic-gate 211*0Sstevel@tonic-gate ((struct hostdata4 *)n)->h4_addr = *(struct in_addr *)ipaddr; 212*0Sstevel@tonic-gate hashval = ((struct in_addr *)ipaddr)->s_addr; 213*0Sstevel@tonic-gate hp = (struct hostdata **)&h_table4[iphash(hashval)]; 214*0Sstevel@tonic-gate break; 215*0Sstevel@tonic-gate case AF_INET6: 216*0Sstevel@tonic-gate n = (struct hostdata *)malloc(sizeof (struct hostdata6)); 217*0Sstevel@tonic-gate if (n == NULL) 218*0Sstevel@tonic-gate goto alloc_failed; 219*0Sstevel@tonic-gate 220*0Sstevel@tonic-gate memset(n, 0, sizeof (struct hostdata6)); 221*0Sstevel@tonic-gate n->h_hostname = strdup(name); 222*0Sstevel@tonic-gate if (n->h_hostname == NULL) 223*0Sstevel@tonic-gate goto alloc_failed; 224*0Sstevel@tonic-gate 225*0Sstevel@tonic-gate memcpy(&((struct hostdata6 *)n)->h6_addr, ipaddr, 226*0Sstevel@tonic-gate sizeof (struct in6_addr)); 227*0Sstevel@tonic-gate hashval = ((int *)ipaddr)[3]; 228*0Sstevel@tonic-gate hp = (struct hostdata **)&h_table6[iphash(hashval)]; 229*0Sstevel@tonic-gate break; 230*0Sstevel@tonic-gate default: 231*0Sstevel@tonic-gate fprintf(stderr, "snoop: ERROR: Unknown address family: %d", 232*0Sstevel@tonic-gate family); 233*0Sstevel@tonic-gate exit(1); 234*0Sstevel@tonic-gate } 235*0Sstevel@tonic-gate 236*0Sstevel@tonic-gate n->h_next = *hp; 237*0Sstevel@tonic-gate *hp = n; 238*0Sstevel@tonic-gate 239*0Sstevel@tonic-gate if (namefile != NULL) { 240*0Sstevel@tonic-gate if (family == AF_INET) { 241*0Sstevel@tonic-gate np = inet_ntoa(*(struct in_addr *)ipaddr); 242*0Sstevel@tonic-gate if (np) { 243*0Sstevel@tonic-gate (void) fprintf(namefile, "%s\t%s", np, name); 244*0Sstevel@tonic-gate if (aliases) { 245*0Sstevel@tonic-gate for (ind = 0; 246*0Sstevel@tonic-gate aliases[ind] != NULL; 247*0Sstevel@tonic-gate ind++) { 248*0Sstevel@tonic-gate (void) fprintf(namefile, " %s", 249*0Sstevel@tonic-gate aliases[ind]); 250*0Sstevel@tonic-gate } 251*0Sstevel@tonic-gate } 252*0Sstevel@tonic-gate (void) fprintf(namefile, "\n"); 253*0Sstevel@tonic-gate } 254*0Sstevel@tonic-gate } else if (family == AF_INET6) { 255*0Sstevel@tonic-gate np = (char *)inet_ntop(AF_INET6, (void *)ipaddr, aname, 256*0Sstevel@tonic-gate sizeof (aname)); 257*0Sstevel@tonic-gate if (np) { 258*0Sstevel@tonic-gate (void) fprintf(namefile, "%s\t%s", np, name); 259*0Sstevel@tonic-gate if (aliases) { 260*0Sstevel@tonic-gate for (ind = 0; 261*0Sstevel@tonic-gate aliases[ind] != NULL; 262*0Sstevel@tonic-gate ind++) { 263*0Sstevel@tonic-gate (void) fprintf(namefile, " %s", 264*0Sstevel@tonic-gate aliases[ind]); 265*0Sstevel@tonic-gate } 266*0Sstevel@tonic-gate } 267*0Sstevel@tonic-gate (void) fprintf(namefile, "\n"); 268*0Sstevel@tonic-gate } 269*0Sstevel@tonic-gate } else { 270*0Sstevel@tonic-gate (void) fprintf(stderr, "addhost: unknown family %d\n", 271*0Sstevel@tonic-gate family); 272*0Sstevel@tonic-gate } 273*0Sstevel@tonic-gate } 274*0Sstevel@tonic-gate return (n); 275*0Sstevel@tonic-gate 276*0Sstevel@tonic-gate alloc_failed: 277*0Sstevel@tonic-gate if (n) 278*0Sstevel@tonic-gate free(n); 279*0Sstevel@tonic-gate (void) fprintf(stderr, "addhost: no mem\n"); 280*0Sstevel@tonic-gate 281*0Sstevel@tonic-gate aname[0] = '\0'; 282*0Sstevel@tonic-gate memset(&h, 0, sizeof (struct hostdata)); 283*0Sstevel@tonic-gate h.h_hostname = aname; 284*0Sstevel@tonic-gate return (&h); 285*0Sstevel@tonic-gate } 286*0Sstevel@tonic-gate 287*0Sstevel@tonic-gate char * 288*0Sstevel@tonic-gate addrtoname(family, ipaddr) 289*0Sstevel@tonic-gate int family; 290*0Sstevel@tonic-gate void *ipaddr; 291*0Sstevel@tonic-gate { 292*0Sstevel@tonic-gate switch (family) { 293*0Sstevel@tonic-gate case AF_INET: 294*0Sstevel@tonic-gate return (iplookup(*(struct in_addr *)ipaddr)->h_hostname); 295*0Sstevel@tonic-gate case AF_INET6: 296*0Sstevel@tonic-gate return (ip6lookup((struct in6_addr *)ipaddr)->h_hostname); 297*0Sstevel@tonic-gate default: 298*0Sstevel@tonic-gate fprintf(stderr, "snoop: ERROR: unknown address family: %d\n", 299*0Sstevel@tonic-gate family); 300*0Sstevel@tonic-gate exit(1); 301*0Sstevel@tonic-gate } 302*0Sstevel@tonic-gate } 303*0Sstevel@tonic-gate 304*0Sstevel@tonic-gate void 305*0Sstevel@tonic-gate load_names(fname) 306*0Sstevel@tonic-gate char *fname; 307*0Sstevel@tonic-gate { 308*0Sstevel@tonic-gate char buf[1024]; 309*0Sstevel@tonic-gate char *addr, *name, *alias; 310*0Sstevel@tonic-gate FILE *f; 311*0Sstevel@tonic-gate unsigned int addrv4; 312*0Sstevel@tonic-gate struct in6_addr addrv6; 313*0Sstevel@tonic-gate int family; 314*0Sstevel@tonic-gate void *naddr; 315*0Sstevel@tonic-gate 316*0Sstevel@tonic-gate (void) fprintf(stderr, "Loading name file %s\n", fname); 317*0Sstevel@tonic-gate f = fopen(fname, "r"); 318*0Sstevel@tonic-gate if (f == NULL) { 319*0Sstevel@tonic-gate perror(fname); 320*0Sstevel@tonic-gate return; 321*0Sstevel@tonic-gate } 322*0Sstevel@tonic-gate 323*0Sstevel@tonic-gate while (fgets(buf, 1024, f) != NULL) { 324*0Sstevel@tonic-gate addr = strtok(buf, SEPARATORS); 325*0Sstevel@tonic-gate if (addr == NULL || *addr == '#') 326*0Sstevel@tonic-gate continue; 327*0Sstevel@tonic-gate if (inet_pton(AF_INET6, addr, (void *)&addrv6) == 1) { 328*0Sstevel@tonic-gate family = AF_INET6; 329*0Sstevel@tonic-gate naddr = (void *)&addrv6; 330*0Sstevel@tonic-gate } else if ((addrv4 = inet_addr(addr)) != -1) { 331*0Sstevel@tonic-gate family = AF_INET; 332*0Sstevel@tonic-gate naddr = (void *)&addrv4; 333*0Sstevel@tonic-gate } 334*0Sstevel@tonic-gate name = strtok(NULL, SEPARATORS); 335*0Sstevel@tonic-gate if (name == NULL) 336*0Sstevel@tonic-gate continue; 337*0Sstevel@tonic-gate while ((alias = strtok(NULL, SEPARATORS)) && (*alias != '#')) { 338*0Sstevel@tonic-gate (void) addhost(family, naddr, alias, NULL); 339*0Sstevel@tonic-gate } 340*0Sstevel@tonic-gate (void) addhost(family, naddr, name, NULL); 341*0Sstevel@tonic-gate /* Note: certain addresses such as broadcast are skipped */ 342*0Sstevel@tonic-gate } 343*0Sstevel@tonic-gate 344*0Sstevel@tonic-gate (void) fclose(f); 345*0Sstevel@tonic-gate } 346*0Sstevel@tonic-gate 347*0Sstevel@tonic-gate /* 348*0Sstevel@tonic-gate * lgetipnodebyname: looks up hostname in cached address data. This allows 349*0Sstevel@tonic-gate * filtering on hostnames from the .names file to work properly, and 350*0Sstevel@tonic-gate * avoids name clashes between domains. Note that only the first of the 351*0Sstevel@tonic-gate * ipv4, ipv6, or v4mapped address will be returned, because the 352*0Sstevel@tonic-gate * cache does not contain information on multi-homed hosts. 353*0Sstevel@tonic-gate */ 354*0Sstevel@tonic-gate /*ARGSUSED*/ 355*0Sstevel@tonic-gate struct hostent * 356*0Sstevel@tonic-gate lgetipnodebyname(const char *name, int af, int flags, int *error_num) 357*0Sstevel@tonic-gate { 358*0Sstevel@tonic-gate int i; 359*0Sstevel@tonic-gate struct hostdata4 *h; 360*0Sstevel@tonic-gate struct hostdata6 *h6; 361*0Sstevel@tonic-gate static struct hostent he; /* host entry */ 362*0Sstevel@tonic-gate static struct in6_addr h46_addr[MAXADDRS]; /* v4mapped address */ 363*0Sstevel@tonic-gate static char h_name[MAXHOSTNAMELEN]; /* hostname */ 364*0Sstevel@tonic-gate static char *list[MAXADDRS]; /* addr_list array */ 365*0Sstevel@tonic-gate struct hostent *hp = &he; 366*0Sstevel@tonic-gate int ind; 367*0Sstevel@tonic-gate 368*0Sstevel@tonic-gate (void) memset((char *)hp, 0, sizeof (struct hostent)); 369*0Sstevel@tonic-gate hp->h_name = h_name; 370*0Sstevel@tonic-gate h_name[0] = '\0'; 371*0Sstevel@tonic-gate strcpy(h_name, name); 372*0Sstevel@tonic-gate 373*0Sstevel@tonic-gate hp->h_addrtype = AF_INET6; 374*0Sstevel@tonic-gate 375*0Sstevel@tonic-gate hp->h_addr_list = list; 376*0Sstevel@tonic-gate for (i = 0; i < MAXADDRS; i++) 377*0Sstevel@tonic-gate hp->h_addr_list[i] = NULL; 378*0Sstevel@tonic-gate ind = 0; 379*0Sstevel@tonic-gate 380*0Sstevel@tonic-gate /* ipv6 lookup */ 381*0Sstevel@tonic-gate if (af == AF_INET6) { 382*0Sstevel@tonic-gate hp->h_length = sizeof (struct in6_addr); 383*0Sstevel@tonic-gate for (i = 0; i < MAXHASH; i++) { 384*0Sstevel@tonic-gate for (h6 = h_table6[i]; h6; h6 = h6->h6_next) { 385*0Sstevel@tonic-gate if (strcmp(name, h6->h6_hostname) == 0) { 386*0Sstevel@tonic-gate if (ind >= MAXADDRS - 1) { 387*0Sstevel@tonic-gate /* too many addresses */ 388*0Sstevel@tonic-gate return (hp); 389*0Sstevel@tonic-gate } 390*0Sstevel@tonic-gate /* found ipv6 addr */ 391*0Sstevel@tonic-gate hp->h_addr_list[ind] = 392*0Sstevel@tonic-gate (char *)&h6->h6_addr; 393*0Sstevel@tonic-gate ind++; 394*0Sstevel@tonic-gate } 395*0Sstevel@tonic-gate } 396*0Sstevel@tonic-gate } 397*0Sstevel@tonic-gate } 398*0Sstevel@tonic-gate /* ipv4 or v4mapped lookup */ 399*0Sstevel@tonic-gate if (af == AF_INET || (flags & AI_ALL)) { 400*0Sstevel@tonic-gate for (i = 0; i < MAXHASH; i++) { 401*0Sstevel@tonic-gate for (h = h_table4[i]; h; h = h->h4_next) { 402*0Sstevel@tonic-gate if (strcmp(name, h->h4_hostname) == 0) { 403*0Sstevel@tonic-gate if (ind >= MAXADDRS - 1) { 404*0Sstevel@tonic-gate /* too many addresses */ 405*0Sstevel@tonic-gate return (hp); 406*0Sstevel@tonic-gate } 407*0Sstevel@tonic-gate if (af == AF_INET) { 408*0Sstevel@tonic-gate /* found ipv4 addr */ 409*0Sstevel@tonic-gate hp->h_addrtype = AF_INET; 410*0Sstevel@tonic-gate hp->h_length = 411*0Sstevel@tonic-gate sizeof (struct in_addr); 412*0Sstevel@tonic-gate hp->h_addr_list[ind] = 413*0Sstevel@tonic-gate (char *)&h->h4_addr; 414*0Sstevel@tonic-gate ind++; 415*0Sstevel@tonic-gate } else { 416*0Sstevel@tonic-gate /* found v4mapped addr */ 417*0Sstevel@tonic-gate hp->h_length = 418*0Sstevel@tonic-gate sizeof (struct in6_addr); 419*0Sstevel@tonic-gate hp->h_addr_list[ind] = 420*0Sstevel@tonic-gate (char *)&h46_addr[ind]; 421*0Sstevel@tonic-gate IN6_INADDR_TO_V4MAPPED( 422*0Sstevel@tonic-gate &h->h4_addr, 423*0Sstevel@tonic-gate &h46_addr[ind]); 424*0Sstevel@tonic-gate ind++; 425*0Sstevel@tonic-gate } 426*0Sstevel@tonic-gate } 427*0Sstevel@tonic-gate } 428*0Sstevel@tonic-gate } 429*0Sstevel@tonic-gate } 430*0Sstevel@tonic-gate return (ind > 0 ? hp : NULL); 431*0Sstevel@tonic-gate } 432