3 /* Copyright (C) 1998, 1999, 2000 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
18 #ifndef MAXHOSTNAMELEN
19 #define MAXHOSTNAMELEN 64
20 #endif /* MAXHOSTNAMELEN */
30 #include <sys/param.h>
31 #include <sys/types.h>
32 #ifdef HAVE_SYS_SOCKET_H
33 #include <sys/socket.h>
35 #ifdef HAVE_NETINET_IN_H
36 #include <netinet/in.h>
38 #ifdef HAVE_ARPA_INET_H
39 #include <arpa/inet.h>
45 #endif /* USE_WINSOCK */
49 #include <java/net/InetAddress.h>
50 #include <java/net/UnknownHostException.h>
51 #include <java/lang/SecurityException.h>
53 #if defined(HAVE_UNAME) && ! defined(HAVE_GETHOSTNAME)
54 #include <sys/utsname.h>
57 #ifndef HAVE_GETHOSTNAME_DECL
58 extern "C" int gethostname (char *name, int namelen);
61 #ifdef DISABLE_JAVA_NET
64 java::net::InetAddress::aton (jstring)
70 java::net::InetAddress::getFamily (jbyteArray bytes)
75 JArray<java::net::InetAddress*> *
76 java::net::InetAddress::lookup (jstring, java::net::InetAddress *, jboolean)
82 java::net::InetAddress::getLocalHostname ()
87 #else /* DISABLE_JAVA_NET */
90 java::net::InetAddress::aton (jstring host)
94 int len = JvGetStringUTFLength(host);
98 hostname = (char*) _Jv_AllocBytesChecked (len+1);
99 JvGetStringUTFRegion (host, 0, host->length(), hostname);
103 #ifdef HAVE_INET_ATON
104 struct in_addr laddr;
105 if (inet_aton (hostname, &laddr))
107 bytes = (char*) &laddr;
110 #elif defined(HAVE_INET_ADDR)
112 typedef jint in_addr_t;
114 in_addr_t laddr = inet_addr (hostname);
115 if (laddr != (in_addr_t)(-1))
117 bytes = (char*) &laddr;
121 #ifdef HAVE_INET_PTON
123 if (len == 0 && inet_pton (AF_INET6, hostname, inet6_addr) > 0)
131 jbyteArray result = JvNewByteArray (blen);
132 memcpy (elements (result), bytes, blen);
137 java::net::InetAddress::getFamily (jbyteArray bytes)
139 int len = bytes->length;
145 #endif /* HAVE_INET6 */
147 JvFail ("unrecognized size");
151 JArray<java::net::InetAddress*> *
152 java::net::InetAddress::lookup (jstring host, java::net::InetAddress* iaddr,
155 struct hostent *hptr = NULL;
156 #if defined (HAVE_GETHOSTBYNAME_R) || defined (HAVE_GETHOSTBYADDR_R)
157 struct hostent hent_r;
158 #if HAVE_STRUCT_HOSTENT_DATA
159 struct hostent_data fixed_buffer, *buffer_r = &fixed_buffer;
161 #if defined (__GLIBC__)
162 // FIXME: in glibc, gethostbyname_r returns NETDB_INTERNAL to herr and
163 // ERANGE to errno if the buffer size is too small, rather than what is
164 // expected here. We work around this by setting a bigger buffer size and
165 // hoping that it is big enough.
166 char fixed_buffer[1024];
168 char fixed_buffer[200];
170 char *buffer_r = fixed_buffer;
171 int size_r = sizeof (fixed_buffer);
179 int len = JvGetStringUTFLength(host);
183 hostname = (char*) _Jv_AllocBytesChecked (len+1);
184 JvGetStringUTFRegion (host, 0, host->length(), hostname);
186 #ifdef HAVE_GETHOSTBYNAME_R
190 #if HAVE_STRUCT_HOSTENT_DATA
191 ok = ! gethostbyname_r (hostname, &hent_r, buffer_r);
194 #ifdef GETHOSTBYNAME_R_RETURNS_INT
195 ok = ! gethostbyname_r (hostname, &hent_r, buffer_r, size_r,
198 hptr = gethostbyname_r (hostname, &hent_r, buffer_r, size_r, &herr);
200 #endif /* GETHOSTNAME_R_RETURNS_INT */
201 if (! ok && herr == ERANGE)
204 buffer_r = (char *) _Jv_AllocBytesChecked (size_r);
207 #endif /* HAVE_STRUCT_HOSTENT_DATA */
211 // FIXME: this is insufficient if some other piece of code calls
212 // this gethostbyname.
213 JvSynchronize sync (java::net::InetAddress::localhostAddress);
214 hptr = gethostbyname (hostname);
215 #endif /* HAVE_GETHOSTBYNAME_R */
219 jbyteArray bytes = iaddr->addr;
220 char *chars = (char*) elements (bytes);
221 int len = bytes->length;
227 type = iaddr->family = AF_INET;
232 val = (char *) &chars;
233 type = iaddr->family = AF_INET6;
235 #endif /* HAVE_INET6 */
237 JvFail ("unrecognized size");
239 #ifdef HAVE_GETHOSTBYADDR_R
243 #if HAVE_STRUCT_HOSTENT_DATA
244 ok = ! gethostbyaddr_r (val, len, type, &hent_r, buffer_r);
247 #ifdef GETHOSTBYADDR_R_RETURNS_INT
248 ok = ! gethostbyaddr_r (val, len, type, &hent_r,
249 buffer_r, size_r, &hptr, &herr);
251 hptr = gethostbyaddr_r (val, len, type, &hent_r,
252 buffer_r, size_r, &herr);
254 #endif /* GETHOSTBYADDR_R_RETURNS_INT */
255 if (! ok && herr == ERANGE)
258 buffer_r = (char *) _Jv_AllocBytesChecked (size_r);
261 #endif /* HAVE_STRUCT_HOSTENT_DATA */
264 #else /* HAVE_GETHOSTBYADDR_R */
265 // FIXME: this is insufficient if some other piece of code calls
266 // this gethostbyaddr.
267 JvSynchronize sync (java::net::InetAddress::localhostAddress);
268 hptr = gethostbyaddr (val, len, type);
269 #endif /* HAVE_GETHOSTBYADDR_R */
274 host = JvNewStringUTF (hptr->h_name);
275 java::lang::SecurityException *ex = checkConnect (host);
278 if (iaddr == NULL || iaddr->addr == NULL)
285 if (iaddr != NULL && iaddr->addr != NULL)
287 iaddr->hostName = iaddr->getHostAddress();
291 throw new java::net::UnknownHostException(host);
296 char** ptr = hptr->h_addr_list;
298 while (*ptr++) count++;
302 JArray<java::net::InetAddress*> *result;
303 java::net::InetAddress** iaddrs;
306 result = java::net::InetAddress::allocArray (count);
307 iaddrs = elements (result);
315 for (int i = 0; i < count; i++)
317 if (iaddrs[i] == NULL)
318 iaddrs[i] = new java::net::InetAddress (NULL, NULL);
319 if (iaddrs[i]->hostName == NULL)
320 iaddrs[i]->hostName = host;
321 if (iaddrs[i]->addr == NULL)
323 char *bytes = hptr->h_addr_list[i];
324 iaddrs[i]->addr = JvNewByteArray (hptr->h_length);
325 iaddrs[i]->family = getFamily (iaddrs[i]->addr);
326 memcpy (elements (iaddrs[i]->addr), bytes, hptr->h_length);
333 java::net::InetAddress::getLocalHostname ()
336 #ifdef HAVE_GETHOSTNAME
337 char buffer[MAXHOSTNAMELEN];
338 if (gethostname (buffer, MAXHOSTNAMELEN))
342 struct utsname stuff;
343 if (uname (&stuff) != 0)
345 chars = stuff.nodename;
349 // It is admittedly non-optimal to convert the hostname to Unicode
350 // only to convert it back in getByName, but simplicity wins. Note
351 // that unless there is a SecurityManager, we only get called once
352 // anyway, thanks to the InetAddress.localhost cache.
353 return JvNewStringUTF (chars);
356 #endif /* DISABLE_JAVA_NET */