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53 * @(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93
54 * $FreeBSD: src/lib/libc/net/gethostbyht.c,v 1.12 1999/08/28 00:00:05 peter Exp $
55 * $DragonFly: src/lib/libc/net/gethostbyht.c,v 1.3 2004/10/25 19:38:01 drhodus Exp $
58 #include <sys/param.h>
59 #include <sys/socket.h>
60 #include <netinet/in.h>
61 #include <arpa/inet.h>
67 #include <arpa/nameser.h> /* XXX */
68 #include <resolv.h> /* XXX */
72 static struct hostent host;
73 static char *host_aliases[MAXALIASES];
74 static char hostbuf[BUFSIZ+1];
75 static FILE *hostf = NULL;
76 static u_int32_t host_addr[4]; /* IPv4 or IPv6 */
77 static char *h_addr_ptrs[2];
78 static int stayopen = 0;
85 hostf = fopen(_PATH_HOSTS, "r" );
94 if (hostf && !stayopen) {
107 if (!hostf && !(hostf = fopen(_PATH_HOSTS, "r" ))) {
108 h_errno = NETDB_INTERNAL;
112 if (!(p = fgets(hostbuf, sizeof hostbuf, hostf))) {
113 h_errno = HOST_NOT_FOUND;
118 if (!(cp = strpbrk(p, "#\n")))
121 if (!(cp = strpbrk(p, " \t")))
124 if (inet_pton(AF_INET6, p, host_addr) > 0) {
127 } else if (inet_pton(AF_INET, p, host_addr) > 0) {
128 if (_res.options & RES_USE_INET6) {
129 _map_v4v6_address((char*)host_addr, (char*)host_addr);
139 h_addr_ptrs[0] = (char *)host_addr;
140 h_addr_ptrs[1] = NULL;
141 host.h_addr_list = h_addr_ptrs;
143 host.h_addrtype = af;
144 while (*cp == ' ' || *cp == '\t')
147 q = host.h_aliases = host_aliases;
148 if ((cp = strpbrk(cp, " \t")) != NULL)
151 if (*cp == ' ' || *cp == '\t') {
155 if (q < &host_aliases[MAXALIASES - 1])
157 if ((cp = strpbrk(cp, " \t")) != NULL)
161 h_errno = NETDB_SUCCESS;
166 _gethostbyhtname(name, af)
174 while ((p = gethostent()) != NULL) {
175 if (p->h_addrtype != af)
177 if (strcasecmp(p->h_name, name) == 0)
179 for (cp = p->h_aliases; *cp != 0; cp++)
180 if (strcasecmp(*cp, name) == 0)
189 _gethostbyhtaddr(addr, len, af)
196 while ((p = gethostent()) != NULL)
197 if (p->h_addrtype == af && !bcmp(p->h_addr, addr, len))