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0f2d19dd JB |
1 | /* "socket.c" internet socket support for client/server in SCM |
2 | Copyright (C) 1994 Aubrey Jaffer. | |
3 | Thanks to Hallvard.Tretteberg@si.sintef.no | |
4 | who credits NCSA httpd software by Rob McCool 3/21/93. | |
5 | Rewritten by Gary Houston to be a closer interface to the C | |
6 | socket library. | |
7 | */ | |
8 | \f | |
9 | ||
10 | #include <stdio.h> | |
11 | #include <string.h> | |
12 | #include "_scm.h" | |
13 | #include <sys/types.h> | |
14 | #include <sys/socket.h> | |
15 | #include <sys/un.h> | |
16 | #include <netinet/in.h> | |
17 | #include <netdb.h> | |
18 | #include <arpa/inet.h> | |
19 | ||
20 | \f | |
21 | ||
22 | #ifndef STDC_HEADERS | |
23 | int close P ((int fd)); | |
24 | #endif /* STDC_HEADERS */ | |
25 | ||
26 | SCM_PROC (s_sys_inet_aton, "%inet-aton", 1, 0, 0, scm_sys_inet_aton); | |
27 | #ifdef __STDC__ | |
28 | SCM | |
29 | scm_sys_inet_aton (SCM address) | |
30 | #else | |
31 | SCM | |
32 | scm_sys_inet_aton (address) | |
33 | SCM address; | |
34 | #endif | |
35 | { | |
36 | struct in_addr soka; | |
37 | int rv; | |
38 | SCM_ASSERT (SCM_NIMP (address) && SCM_ROSTRINGP (address), address, SCM_ARG1, s_sys_inet_aton); | |
39 | if (SCM_SUBSTRP (address)) | |
40 | address = scm_makfromstr (SCM_ROCHARS (address), SCM_ROLENGTH (address), 0); | |
41 | rv = inet_aton (SCM_ROCHARS (address), &soka); | |
42 | return rv ? scm_ulong2num (ntohl (soka.s_addr)) : SCM_BOOL_F; | |
43 | } | |
44 | ||
45 | ||
46 | SCM_PROC (s_inet_ntoa, "inet-ntoa", 1, 0, 0, scm_inet_ntoa); | |
47 | #ifdef __STDC__ | |
48 | SCM | |
49 | scm_inet_ntoa (SCM inetid) | |
50 | #else | |
51 | SCM | |
52 | scm_inet_ntoa (inetid) | |
53 | SCM inetid; | |
54 | #endif | |
55 | { | |
56 | struct in_addr addr; | |
57 | char *s; | |
58 | SCM answer; | |
59 | addr.s_addr = htonl (scm_num2ulong (inetid, (char *) SCM_ARG1, s_inet_ntoa)); | |
60 | SCM_DEFER_INTS; | |
61 | s = inet_ntoa (addr); | |
62 | answer = scm_makfromstr (s, strlen (s), 0); | |
63 | SCM_ALLOW_INTS; | |
64 | return answer; | |
65 | } | |
66 | ||
67 | SCM_PROC (s_inet_netof, "inet-netof", 1, 0, 0, scm_inet_netof); | |
68 | #ifdef __STDC__ | |
69 | SCM | |
70 | scm_inet_netof (SCM address) | |
71 | #else | |
72 | SCM | |
73 | scm_inet_netof (address) | |
74 | SCM address; | |
75 | #endif | |
76 | { | |
77 | struct in_addr addr; | |
78 | addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_inet_netof)); | |
79 | return scm_ulong2num ((unsigned long) inet_netof (addr)); | |
80 | } | |
81 | ||
82 | SCM_PROC (s_lnaof, "lnaof", 1, 0, 0, scm_lnaof); | |
83 | #ifdef __STDC__ | |
84 | SCM | |
85 | scm_lnaof (SCM address) | |
86 | #else | |
87 | SCM | |
88 | scm_lnaof (address) | |
89 | SCM address; | |
90 | #endif | |
91 | { | |
92 | struct in_addr addr; | |
93 | addr.s_addr = htonl (scm_num2ulong (address, (char *) SCM_ARG1, s_lnaof)); | |
94 | return scm_ulong2num ((unsigned long) inet_lnaof (addr)); | |
95 | } | |
96 | ||
97 | ||
98 | SCM_PROC (s_inet_makeaddr, "inet-makeaddr", 2, 0, 0, scm_inet_makeaddr); | |
99 | #ifdef __STDC__ | |
100 | SCM | |
101 | scm_inet_makeaddr (SCM net, SCM lna) | |
102 | #else | |
103 | SCM | |
104 | scm_inet_makeaddr (net, lna) | |
105 | SCM net; | |
106 | SCM lna; | |
107 | #endif | |
108 | { | |
109 | struct in_addr addr; | |
110 | unsigned long netnum; | |
111 | unsigned long lnanum; | |
112 | ||
113 | netnum = scm_num2ulong (net, (char *) SCM_ARG1, s_inet_makeaddr); | |
114 | lnanum = scm_num2ulong (lna, (char *) SCM_ARG2, s_inet_makeaddr); | |
115 | addr = inet_makeaddr (netnum, lnanum); | |
116 | return scm_ulong2num (ntohl (addr.s_addr)); | |
117 | } | |
118 | ||
119 | ||
120 | /* !!! Doesn't take address format. | |
121 | * Assumes hostent stream isn't reused. | |
122 | */ | |
123 | ||
124 | SCM_PROC (s_sys_gethost, "%gethost", 0, 1, 0, scm_sys_gethost); | |
125 | #ifdef __STDC__ | |
126 | SCM | |
127 | scm_sys_gethost (SCM name) | |
128 | #else | |
129 | SCM | |
130 | scm_sys_gethost (name) | |
131 | SCM name; | |
132 | #endif | |
133 | { | |
134 | SCM ans = scm_make_vector (SCM_MAKINUM (5), SCM_UNSPECIFIED, SCM_BOOL_F); | |
135 | SCM *ve = SCM_VELTS (ans); | |
136 | SCM lst = SCM_EOL; | |
137 | struct hostent *entry; | |
138 | struct in_addr inad; | |
139 | char **argv; | |
140 | int i = 0; | |
141 | #ifdef HAVE_GETHOSTENT | |
142 | if (SCM_UNBNDP (name)) | |
143 | { | |
144 | SCM_DEFER_INTS; | |
145 | entry = gethostent (); | |
146 | } | |
147 | else | |
148 | #endif | |
149 | if (SCM_NIMP (name) && SCM_STRINGP (name)) | |
150 | { | |
151 | SCM_DEFER_INTS; | |
152 | entry = gethostbyname (SCM_CHARS (name)); | |
153 | } | |
154 | else | |
155 | { | |
156 | inad.s_addr = htonl (scm_num2ulong (name, (char *) SCM_ARG1, s_sys_gethost)); | |
157 | SCM_DEFER_INTS; | |
158 | entry = gethostbyaddr ((char *) &inad, sizeof (inad), AF_INET); | |
159 | } | |
160 | SCM_ALLOW_INTS; | |
161 | if (!entry) | |
162 | return SCM_BOOL_F; | |
163 | ve[0] = scm_makfromstr (entry->h_name, (scm_sizet) strlen (entry->h_name), 0); | |
164 | ve[1] = scm_makfromstrs (-1, entry->h_aliases); | |
165 | ve[2] = SCM_MAKINUM (entry->h_addrtype + 0L); | |
166 | ve[3] = SCM_MAKINUM (entry->h_length + 0L); | |
167 | if (sizeof (struct in_addr) != entry->h_length) | |
168 | { | |
169 | ve[4] = SCM_BOOL_F; | |
170 | return ans; | |
171 | } | |
172 | for (argv = entry->h_addr_list; argv[i]; i++); | |
173 | while (i--) | |
174 | { | |
175 | inad = *(struct in_addr *) argv[i]; | |
176 | lst = scm_cons (scm_ulong2num (ntohl (inad.s_addr)), lst); | |
177 | } | |
178 | ve[4] = lst; | |
179 | return ans; | |
180 | } | |
181 | ||
182 | ||
183 | SCM_PROC (s_sys_getnet, "%getnet", 0, 1, 0, scm_sys_getnet); | |
184 | #ifdef __STDC__ | |
185 | SCM | |
186 | scm_sys_getnet (SCM name) | |
187 | #else | |
188 | SCM | |
189 | scm_sys_getnet (name) | |
190 | SCM name; | |
191 | #endif | |
192 | { | |
193 | SCM ans; | |
194 | SCM *ve; | |
195 | struct netent *entry; | |
196 | ||
197 | ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F); | |
198 | ve = SCM_VELTS (ans); | |
199 | if (SCM_UNBNDP (name)) | |
200 | { | |
201 | SCM_DEFER_INTS; | |
202 | entry = getnetent (); | |
203 | } | |
204 | else if (SCM_NIMP (name) && SCM_STRINGP (name)) | |
205 | { | |
206 | SCM_DEFER_INTS; | |
207 | entry = getnetbyname (SCM_CHARS (name)); | |
208 | } | |
209 | else | |
210 | { | |
211 | unsigned long netnum; | |
212 | netnum = scm_num2ulong (name, (char *) SCM_ARG1, s_sys_getnet); | |
213 | SCM_DEFER_INTS; | |
214 | entry = getnetbyaddr (netnum, AF_INET); | |
215 | } | |
216 | SCM_ALLOW_INTS; | |
217 | if (!entry) | |
218 | return SCM_BOOL_F; | |
219 | ve[0] = scm_makfromstr (entry->n_name, (scm_sizet) strlen (entry->n_name), 0); | |
220 | ve[1] = scm_makfromstrs (-1, entry->n_aliases); | |
221 | ve[2] = SCM_MAKINUM (entry->n_addrtype + 0L); | |
222 | ve[3] = scm_ulong2num (entry->n_net + 0L); | |
223 | return ans; | |
224 | } | |
225 | ||
226 | SCM_PROC (s_sys_getproto, "%getproto", 0, 1, 0, scm_sys_getproto); | |
227 | #ifdef __STDC__ | |
228 | SCM | |
229 | scm_sys_getproto (SCM name) | |
230 | #else | |
231 | SCM | |
232 | scm_sys_getproto (name) | |
233 | SCM name; | |
234 | #endif | |
235 | { | |
236 | SCM ans; | |
237 | SCM *ve; | |
238 | struct protoent *entry; | |
239 | ||
240 | ans = scm_make_vector (SCM_MAKINUM (3), SCM_UNSPECIFIED, SCM_BOOL_F); | |
241 | ve = SCM_VELTS (ans); | |
242 | if (SCM_UNBNDP (name)) | |
243 | { | |
244 | SCM_DEFER_INTS; | |
245 | entry = getprotoent (); | |
246 | } | |
247 | else if (SCM_NIMP (name) && SCM_STRINGP (name)) | |
248 | { | |
249 | SCM_DEFER_INTS; | |
250 | entry = getprotobyname (SCM_CHARS (name)); | |
251 | } | |
252 | else | |
253 | { | |
254 | unsigned long protonum; | |
255 | protonum = scm_num2ulong (name, (char *) SCM_ARG1, s_sys_getproto); | |
256 | SCM_DEFER_INTS; | |
257 | entry = getprotobynumber (protonum); | |
258 | } | |
259 | SCM_ALLOW_INTS; | |
260 | if (!entry) | |
261 | return SCM_BOOL_F; | |
262 | ve[0] = scm_makfromstr (entry->p_name, (scm_sizet) strlen (entry->p_name), 0); | |
263 | ve[1] = scm_makfromstrs (-1, entry->p_aliases); | |
264 | ve[2] = SCM_MAKINUM (entry->p_proto + 0L); | |
265 | return ans; | |
266 | } | |
267 | ||
268 | #ifdef __STDC__ | |
269 | static SCM | |
270 | scm_return_entry (struct servent *entry) | |
271 | #else | |
272 | static SCM | |
273 | scm_return_entry (entry) | |
274 | struct servent *entry; | |
275 | #endif | |
276 | { | |
277 | SCM ans; | |
278 | SCM *ve; | |
279 | ||
280 | ans = scm_make_vector (SCM_MAKINUM (4), SCM_UNSPECIFIED, SCM_BOOL_F); | |
281 | ve = SCM_VELTS (ans); | |
282 | if (!entry) | |
283 | { | |
284 | SCM_ALLOW_INTS; | |
285 | return SCM_BOOL_F; | |
286 | } | |
287 | ve[0] = scm_makfromstr (entry->s_name, (scm_sizet) strlen (entry->s_name), 0); | |
288 | ve[1] = scm_makfromstrs (-1, entry->s_aliases); | |
289 | ve[2] = SCM_MAKINUM (ntohs (entry->s_port) + 0L); | |
290 | ve[3] = scm_makfromstr (entry->s_proto, (scm_sizet) strlen (entry->s_proto), 0); | |
291 | SCM_ALLOW_INTS; | |
292 | return ans; | |
293 | } | |
294 | ||
295 | SCM_PROC (s_sys_getserv, "%getserv", 0, 2, 0, scm_sys_getserv); | |
296 | #ifdef __STDC__ | |
297 | SCM | |
298 | scm_sys_getserv (SCM name, SCM proto) | |
299 | #else | |
300 | SCM | |
301 | scm_sys_getserv (name, proto) | |
302 | SCM name; | |
303 | SCM proto; | |
304 | #endif | |
305 | { | |
306 | struct servent *entry; | |
307 | if (SCM_UNBNDP (name)) | |
308 | { | |
309 | SCM_DEFER_INTS; | |
310 | entry = getservent (); | |
311 | return scm_return_entry (entry); | |
312 | } | |
313 | SCM_ASSERT (SCM_NIMP (proto) && SCM_STRINGP (proto), proto, SCM_ARG2, s_sys_getserv); | |
314 | if (SCM_NIMP (name) && SCM_STRINGP (name)) | |
315 | { | |
316 | SCM_DEFER_INTS; | |
317 | entry = getservbyname (SCM_CHARS (name), SCM_CHARS (proto)); | |
318 | } | |
319 | else | |
320 | { | |
321 | SCM_ASSERT (SCM_INUMP (name), name, SCM_ARG1, s_sys_getserv); | |
322 | SCM_DEFER_INTS; | |
323 | entry = getservbyport (SCM_INUM (name), SCM_CHARS (proto)); | |
324 | } | |
325 | return scm_return_entry (entry); | |
326 | } | |
327 | ||
328 | SCM_PROC (s_sethost, "sethost", 0, 1, 0, scm_sethost); | |
329 | #ifdef __STDC__ | |
330 | SCM | |
331 | scm_sethost (SCM arg) | |
332 | #else | |
333 | SCM | |
334 | scm_sethost (arg) | |
335 | SCM arg; | |
336 | #endif | |
337 | { | |
338 | if (SCM_UNBNDP (arg)) | |
339 | endhostent (); | |
340 | else | |
341 | sethostent (SCM_NFALSEP (arg)); | |
342 | return SCM_UNSPECIFIED; | |
343 | } | |
344 | ||
345 | SCM_PROC (s_setnet, "setnet", 0, 1, 0, scm_setnet); | |
346 | #ifdef __STDC__ | |
347 | SCM | |
348 | scm_setnet (SCM arg) | |
349 | #else | |
350 | SCM | |
351 | scm_setnet (arg) | |
352 | SCM arg; | |
353 | #endif | |
354 | { | |
355 | if (SCM_UNBNDP (arg)) | |
356 | endnetent (); | |
357 | else | |
358 | setnetent (SCM_NFALSEP (arg)); | |
359 | return SCM_UNSPECIFIED; | |
360 | } | |
361 | ||
362 | SCM_PROC (s_setproto, "setproto", 0, 1, 0, scm_setproto); | |
363 | #ifdef __STDC__ | |
364 | SCM | |
365 | scm_setproto (SCM arg) | |
366 | #else | |
367 | SCM | |
368 | scm_setproto (arg) | |
369 | SCM arg; | |
370 | #endif | |
371 | { | |
372 | if (SCM_UNBNDP (arg)) | |
373 | endprotoent (); | |
374 | else | |
375 | setprotoent (SCM_NFALSEP (arg)); | |
376 | return SCM_UNSPECIFIED; | |
377 | } | |
378 | ||
379 | SCM_PROC (s_setserv, "setserv", 0, 1, 0, scm_setserv); | |
380 | #ifdef __STDC__ | |
381 | SCM | |
382 | scm_setserv (SCM arg) | |
383 | #else | |
384 | SCM | |
385 | scm_setserv (arg) | |
386 | SCM arg; | |
387 | #endif | |
388 | { | |
389 | if (SCM_UNBNDP (arg)) | |
390 | endservent (); | |
391 | else | |
392 | setservent (SCM_NFALSEP (arg)); | |
393 | return SCM_UNSPECIFIED; | |
394 | } | |
395 | ||
396 | #ifdef __STDC__ | |
397 | void | |
398 | scm_init_socket (void) | |
399 | #else | |
400 | void | |
401 | scm_init_socket () | |
402 | #endif | |
403 | { | |
404 | scm_add_feature ("socket"); | |
405 | #include "socket.x" | |
406 | } | |
407 | ||
408 |