diff options
Diffstat (limited to 'resolv/gethnamaddr.c')
| -rw-r--r-- | resolv/gethnamaddr.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/resolv/gethnamaddr.c b/resolv/gethnamaddr.c index 755fc52ea8..fb51e31003 100644 --- a/resolv/gethnamaddr.c +++ b/resolv/gethnamaddr.c @@ -167,7 +167,7 @@ getanswer(answer, anslen, qname, qtype) int type, class, buflen, ancount, qdcount; int haveanswer, had_error; int toobig = 0; - char tbuf[MAXDNAME+1]; + char tbuf[MAXDNAME]; const char *tname; int (*name_ok) __P((const char *)); @@ -417,6 +417,10 @@ gethostbyname(name) { struct hostent *hp; + if ((_res.options & RES_INIT) == 0 && res_init() == -1) { + h_errno = NETDB_INTERNAL; + return (NULL); + } if (_res.options & RES_USE_INET6) { hp = gethostbyname2(name, AF_INET6); if (hp) @@ -502,6 +506,36 @@ gethostbyname2(name, af) } if (!isdigit(*cp) && *cp != '.') break; + } + if (isxdigit(name[0]) || name[0] == ':') + for (cp = name;; ++cp) { + if (!*cp) { + if (*--cp == '.') + break; + /* + * All-IPv6-legal, no dot at the end. + * Fake up a hostent as if we'd actually + * done a lookup. + */ + if (inet_pton(af, name, host_addr) <= 0) { + h_errno = HOST_NOT_FOUND; + return (NULL); + } + strncpy(hostbuf, name, MAXDNAME); + hostbuf[MAXDNAME] = '\0'; + bp = hostbuf + MAXDNAME; + len = sizeof hostbuf - MAXDNAME; + host.h_name = hostbuf; + host.h_aliases = host_aliases; + host_aliases[0] = NULL; + h_addr_ptrs[0] = (char *)host_addr; + h_addr_ptrs[1] = NULL; + host.h_addr_list = h_addr_ptrs; + h_errno = NETDB_SUCCESS; + return (&host); + } + if (!isxdigit(*cp) && *cp != ':' && *cp != '.') + break; } if ((n = res_search(name, C_IN, type, buf.buf, sizeof(buf))) < 0) { |