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370312ae GH |
1 | /* "net_db.c" network database support |
2 | * Copyright (C) 1995,1996 Free Software Foundation, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2, or (at your option) | |
7 | * any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this software; see the file COPYING. If not, write to | |
16 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
40 | * If you do not wish that, delete this exception notice. | |
41 | */ | |
42 | ||
43 | /* Written in 1994 by Aubrey Jaffer. | |
44 | * Thanks to Hallvard.Tretteberg@si.sintef.no for inspiration and discussion. | |
45 | * Rewritten by Gary Houston to be a closer interface to the C socket library. | |
46 | * Split into net_db.c and socket.c. | |
47 | */ | |
48 | \f | |
49 | ||
50 | #include <stdio.h> | |
51 | #include "_scm.h" | |
52 | #include "feature.h" | |
53 | ||
54 | #include "net_db.h" | |
55 | ||
56 | #ifdef HAVE_STRING_H | |
57 | #include <string.h> | |
58 | #endif | |
59 | ||
60 | #include <sys/types.h> | |
cae76441 | 61 | #include <sys/socket.h> |
370312ae GH |
62 | #include <netdb.h> |
63 | #include <netinet/in.h> | |
64 | #include <arpa/inet.h> | |
65 | ||
66 | \f | |
67 | ||
68 | #ifndef STDC_HEADERS | |
69 | int close (); | |
70 | #endif /* STDC_HEADERS */ | |
71 | ||
72 | extern int inet_aton (); | |
73 | ||
74 | SCM_PROC (s_inet_aton, "inet-aton", 1, 0, 0, scm_inet_aton); | |
75 | ||
76 | SCM | |
77 | scm_inet_aton (address) | |
78 | SCM address; | |
79 | { | |
80 | struct in_addr soka; | |
81 | ||
82 | SCM_ASSERT (SCM_NIMP (address) && SCM_ROSTRINGP (address), address, SCM_ARG1, s_inet_aton); | |
83 | if (SCM_SUBSTRP (address)) | |
84 | address = scm_makfromstr (SCM_ROCHARS (address), SCM_ROLENGTH (address), 0); | |
85 | if (inet_aton (SCM_ROCHARS (address), &soka) == 0) | |
86 | scm_syserror (s_inet_aton); | |
87 | return scm_ulong2num (ntohl (soka.s_addr)); | |
88 | } | |
89 | ||
90 | ||
91 | SCM_PROC (s_inet_ntoa, "inet-ntoa", 1, 0, 0, scm_inet_ntoa); | |
92 | ||
93 | SCM | |
94 | scm_inet_ntoa (inetid) | |
95 | SCM inetid; | |
96 | { | |
97 | struct in_addr addr; | |
98 | char *s; | |
99 | SCM answer; | |
100 | addr.s_addr = htonl (scm_num2ulong (inetid, (char *) SCM_ARG1, s_inet_ntoa)); | |
101 | SCM_DEFER_INTS; | |
102 | s = inet_ntoa (addr); | |
103 | answer = scm_makfromstr (s, strlen (s), 0); | |
104 | SCM_ALLOW_INTS; | |
105 | return answer; | |
106 | } | |
107 | ||
108 | SCM_PROC (s_inet_netof, "inet-netof", 1, 0, 0, scm_inet_netof); | |
109 | ||
110 | SCM | |
111 | scm_inet_netof (address) | |
112 | SCM address; | |
113 | { | |
114 | struct in_addr addr; | |
115 | addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_inet_netof)); | |
116 | return scm_ulong2num ((unsigned long) inet_netof (addr)); | |
117 | } | |
118 | ||
03bc4386 | 119 | SCM_PROC (s_lnaof, "inet-lnaof", 1, 0, 0, scm_lnaof); |
370312ae GH |
120 | |
121 | SCM | |
122 | scm_lnaof (address) | |
123 | SCM address; | |
124 | { | |
125 | struct in_addr addr; | |
126 | addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_lnaof)); | |
127 | return scm_ulong2num ((unsigned long) inet_lnaof (addr)); | |
128 | } | |
129 | ||
130 | ||
131 | SCM_PROC (s_inet_makeaddr, "inet-makeaddr", 2, 0, 0, scm_inet_makeaddr); | |
132 | ||
133 | SCM | |
134 | scm_inet_makeaddr (net, lna) | |
135 | SCM net; | |
136 | SCM lna; | |
137 | { | |
138 | struct in_addr addr; | |
139 | unsigned long netnum; | |
140 | unsigned long lnanum; | |
141 | ||
142 | netnum = scm_num2ulong (net, (char *) SCM_ARG1, s_inet_makeaddr); | |
143 | lnanum = scm_num2ulong (lna, (char *) SCM_ARG2, s_inet_makeaddr); | |
144 | addr = inet_makeaddr (netnum, lnanum); | |
145 | return scm_ulong2num (ntohl (addr.s_addr)); | |
146 | } | |
147 | ||
148 | ||
149 | /* !!! Doesn't take address format. | |
150 | * Assumes hostent stream isn't reused. | |
151 | */ | |
152 | ||
153 | SCM_PROC (s_gethost, "gethost", 0, 1, 0, scm_gethost); | |
154 | ||
155 | SCM | |
156 | scm_gethost (name) | |
157 | SCM name; | |
158 | { | |
159 | SCM ans = scm_make_vector (SCM_MAKINUM (5), SCM_UNSPECIFIED, SCM_BOOL_F); | |
160 | SCM *ve = SCM_VELTS (ans); | |
161 | SCM lst = SCM_EOL; | |
162 | struct hostent *entry; | |
163 | struct in_addr inad; | |
164 | char **argv; | |
165 | int i = 0; | |
370312ae GH |
166 | if (SCM_UNBNDP (name)) |
167 | { | |
168 | SCM_DEFER_INTS; | |
169 | entry = gethostent (); | |
170 | } | |
ef12d978 | 171 | else if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) |
370312ae GH |
172 | { |
173 | SCM_DEFER_INTS; | |
ae2fa5bc | 174 | entry = gethostbyname (SCM_ROCHARS (name)); |
370312ae GH |
175 | } |
176 | else | |
177 | { | |
178 | inad.s_addr = htonl (scm_num2ulong (name, (char *) SCM_ARG1, s_gethost)); | |
179 | SCM_DEFER_INTS; | |
180 | entry = gethostbyaddr ((char *) &inad, sizeof (inad), AF_INET); | |
181 | } | |
182 | SCM_ALLOW_INTS; | |
183 | if (!entry) | |
184 | scm_syserror (s_gethost); | |
185 | ve[0] = scm_makfromstr (entry->h_name, (scm_sizet) strlen (entry->h_name), 0); | |
186 | ve[1] = scm_makfromstrs (-1, entry->h_aliases); | |
187 | ve[2] = SCM_MAKINUM (entry->h_addrtype + 0L); | |
188 | ve[3] = SCM_MAKINUM (entry->h_length + 0L); | |
189 | if (sizeof (struct in_addr) != entry->h_length) | |
190 | { | |
191 | ve[4] = SCM_BOOL_F; | |
192 | return ans; | |
193 | } | |
194 | for (argv = entry->h_addr_list; argv[i]; i++); | |
195 | while (i--) | |
196 | { | |
197 | inad = *(struct in_addr *) argv[i]; | |
198 | lst = scm_cons (scm_ulong2num (ntohl (inad.s_addr)), lst); | |
199 | } | |
200 | ve[4] = lst; | |
201 | return ans; | |
202 | } | |
203 | ||
204 | ||
205 | SCM_PROC (s_getnet, "getnet", 0, 1, 0, scm_getnet); | |
206 | ||
207 | SCM | |
208 | scm_getnet (name) | |
209 | SCM name; | |
210 | { | |
211 | SCM ans; | |
212 | SCM *ve; | |
213 | struct netent *entry; | |
214 | ||
215 | ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F); | |
216 | ve = SCM_VELTS (ans); | |
217 | if (SCM_UNBNDP (name)) | |
218 | { | |
219 | SCM_DEFER_INTS; | |
220 | entry = getnetent (); | |
221 | } | |
ae2fa5bc | 222 | else if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) |
370312ae GH |
223 | { |
224 | SCM_DEFER_INTS; | |
ae2fa5bc | 225 | entry = getnetbyname (SCM_ROCHARS (name)); |
370312ae GH |
226 | } |
227 | else | |
228 | { | |
229 | unsigned long netnum; | |
230 | netnum = scm_num2ulong (name, (char *) SCM_ARG1, s_getnet); | |
231 | SCM_DEFER_INTS; | |
232 | entry = getnetbyaddr (netnum, AF_INET); | |
233 | } | |
234 | SCM_ALLOW_INTS; | |
235 | if (!entry) | |
236 | scm_syserror (s_getnet); | |
237 | ve[0] = scm_makfromstr (entry->n_name, (scm_sizet) strlen (entry->n_name), 0); | |
238 | ve[1] = scm_makfromstrs (-1, entry->n_aliases); | |
239 | ve[2] = SCM_MAKINUM (entry->n_addrtype + 0L); | |
240 | ve[3] = scm_ulong2num (entry->n_net + 0L); | |
241 | return ans; | |
242 | } | |
243 | ||
244 | SCM_PROC (s_getproto, "getproto", 0, 1, 0, scm_getproto); | |
245 | ||
246 | SCM | |
247 | scm_getproto (name) | |
248 | SCM name; | |
249 | { | |
250 | SCM ans; | |
251 | SCM *ve; | |
252 | struct protoent *entry; | |
253 | ||
254 | ans = scm_make_vector (SCM_MAKINUM (3), SCM_UNSPECIFIED, SCM_BOOL_F); | |
255 | ve = SCM_VELTS (ans); | |
256 | if (SCM_UNBNDP (name)) | |
257 | { | |
258 | SCM_DEFER_INTS; | |
259 | entry = getprotoent (); | |
260 | } | |
ae2fa5bc | 261 | else if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) |
370312ae GH |
262 | { |
263 | SCM_DEFER_INTS; | |
ae2fa5bc | 264 | entry = getprotobyname (SCM_ROCHARS (name)); |
370312ae GH |
265 | } |
266 | else | |
267 | { | |
268 | unsigned long protonum; | |
269 | protonum = scm_num2ulong (name, (char *) SCM_ARG1, s_getproto); | |
270 | SCM_DEFER_INTS; | |
271 | entry = getprotobynumber (protonum); | |
272 | } | |
273 | SCM_ALLOW_INTS; | |
274 | if (!entry) | |
275 | scm_syserror (s_getproto); | |
276 | ve[0] = scm_makfromstr (entry->p_name, (scm_sizet) strlen (entry->p_name), 0); | |
277 | ve[1] = scm_makfromstrs (-1, entry->p_aliases); | |
278 | ve[2] = SCM_MAKINUM (entry->p_proto + 0L); | |
279 | return ans; | |
280 | } | |
281 | ||
282 | ||
283 | static SCM scm_return_entry SCM_P ((struct servent *entry)); | |
284 | ||
285 | static SCM | |
286 | scm_return_entry (entry) | |
287 | struct servent *entry; | |
288 | { | |
289 | SCM ans; | |
290 | SCM *ve; | |
291 | ||
292 | ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F); | |
293 | ve = SCM_VELTS (ans); | |
294 | ve[0] = scm_makfromstr (entry->s_name, (scm_sizet) strlen (entry->s_name), 0); | |
295 | ve[1] = scm_makfromstrs (-1, entry->s_aliases); | |
296 | ve[2] = SCM_MAKINUM (ntohs (entry->s_port) + 0L); | |
297 | ve[3] = scm_makfromstr (entry->s_proto, (scm_sizet) strlen (entry->s_proto), 0); | |
298 | SCM_ALLOW_INTS; | |
299 | return ans; | |
300 | } | |
301 | ||
302 | SCM_PROC (s_getserv, "getserv", 0, 2, 0, scm_getserv); | |
303 | ||
304 | SCM | |
305 | scm_getserv (name, proto) | |
306 | SCM name; | |
307 | SCM proto; | |
308 | { | |
309 | struct servent *entry; | |
310 | if (SCM_UNBNDP (name)) | |
311 | { | |
312 | SCM_DEFER_INTS; | |
313 | entry = getservent (); | |
314 | if (!entry) | |
315 | scm_syserror (s_getserv); | |
65b376c7 | 316 | SCM_ALLOW_INTS; |
370312ae GH |
317 | return scm_return_entry (entry); |
318 | } | |
ae2fa5bc GH |
319 | SCM_ASSERT (SCM_NIMP (proto) && SCM_ROSTRINGP (proto), proto, SCM_ARG2, s_getserv); |
320 | if (SCM_NIMP (name) && SCM_ROSTRINGP (name)) | |
370312ae GH |
321 | { |
322 | SCM_DEFER_INTS; | |
ae2fa5bc | 323 | entry = getservbyname (SCM_ROCHARS (name), SCM_ROCHARS (proto)); |
370312ae GH |
324 | } |
325 | else | |
326 | { | |
327 | SCM_ASSERT (SCM_INUMP (name), name, SCM_ARG1, s_getserv); | |
328 | SCM_DEFER_INTS; | |
ae2fa5bc | 329 | entry = getservbyport (htons (SCM_INUM (name)), SCM_ROCHARS (proto)); |
370312ae GH |
330 | } |
331 | if (!entry) | |
332 | scm_syserror (s_getserv); | |
65b376c7 | 333 | SCM_ALLOW_INTS; |
370312ae GH |
334 | return scm_return_entry (entry); |
335 | } | |
336 | ||
337 | SCM_PROC (s_sethost, "sethost", 0, 1, 0, scm_sethost); | |
338 | ||
339 | SCM | |
340 | scm_sethost (arg) | |
341 | SCM arg; | |
342 | { | |
343 | if (SCM_UNBNDP (arg)) | |
344 | endhostent (); | |
345 | else | |
346 | sethostent (SCM_NFALSEP (arg)); | |
347 | return SCM_UNSPECIFIED; | |
348 | } | |
349 | ||
350 | SCM_PROC (s_setnet, "setnet", 0, 1, 0, scm_setnet); | |
351 | ||
352 | SCM | |
353 | scm_setnet (arg) | |
354 | SCM arg; | |
355 | { | |
356 | if (SCM_UNBNDP (arg)) | |
357 | endnetent (); | |
358 | else | |
359 | setnetent (SCM_NFALSEP (arg)); | |
360 | return SCM_UNSPECIFIED; | |
361 | } | |
362 | ||
363 | SCM_PROC (s_setproto, "setproto", 0, 1, 0, scm_setproto); | |
364 | ||
365 | SCM | |
366 | scm_setproto (arg) | |
367 | SCM arg; | |
368 | { | |
369 | if (SCM_UNBNDP (arg)) | |
370 | endprotoent (); | |
371 | else | |
372 | setprotoent (SCM_NFALSEP (arg)); | |
373 | return SCM_UNSPECIFIED; | |
374 | } | |
375 | ||
376 | SCM_PROC (s_setserv, "setserv", 0, 1, 0, scm_setserv); | |
377 | ||
378 | SCM | |
379 | scm_setserv (arg) | |
380 | SCM arg; | |
381 | { | |
382 | if (SCM_UNBNDP (arg)) | |
383 | endservent (); | |
384 | else | |
385 | setservent (SCM_NFALSEP (arg)); | |
386 | return SCM_UNSPECIFIED; | |
387 | } | |
388 | ||
389 | ||
390 | void | |
391 | scm_init_net_db () | |
392 | { | |
393 | #ifdef INADDR_ANY | |
394 | scm_sysintern ("INADDR_ANY", scm_ulong2num (INADDR_ANY)); | |
395 | #endif | |
396 | #ifdef INADDR_BROADCAST | |
397 | scm_sysintern ("INADDR_BROADCAST", scm_ulong2num (INADDR_BROADCAST)); | |
398 | #endif | |
399 | #ifdef INADDR_NONE | |
400 | scm_sysintern ("INADDR_NONE", scm_ulong2num (INADDR_NONE)); | |
401 | #endif | |
402 | #ifdef INADDR_LOOPBACK | |
403 | scm_sysintern ("INADDR_LOOPBACK", scm_ulong2num (INADDR_LOOPBACK)); | |
404 | #endif | |
405 | ||
406 | scm_add_feature ("net-db"); | |
407 | #include "net_db.x" | |
408 | } | |
409 | ||
410 |