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[perl5.git] / ext / Socket / Socket.xs
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c5be433b 1#define PERL_NO_GET_CONTEXT
a0d0e21e
LW
2#include "EXTERN.h"
3#include "perl.h"
4#include "XSUB.h"
5
8e07c86e
AD
6#ifndef VMS
7# ifdef I_SYS_TYPES
8# include <sys/types.h>
9# endif
9cc6feab 10# include <sys/socket.h>
29209bc5 11# if defined(USE_SOCKS) && defined(I_SOCKS)
86959918 12# include <socks.h>
a062834f 13# endif
9cc6feab
JH
14# ifdef MPE
15# define PF_INET AF_INET
16# define PF_UNIX AF_UNIX
17# define SOCK_RAW 3
18# endif
19# ifdef I_SYS_UN
20# include <sys/un.h>
21# endif
bf9b2f8f
JH
22/* XXX Configure test for <netinet/in_systm.h needed XXX */
23# if defined(NeXT) || defined(__NeXT__)
24# include <netinet/in_systm.h>
25# endif
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AD
26# ifdef I_NETINET_IN
27# include <netinet/in.h>
28# endif
86959918
JH
29# ifdef I_NETDB
30# include <netdb.h>
31# endif
9cc6feab
JH
32# ifdef I_ARPA_INET
33# include <arpa/inet.h>
34# endif
35# ifdef I_NETINET_TCP
36# include <netinet/tcp.h>
37# endif
8e07c86e 38#else
9cc6feab 39# include "sockadapt.h"
8e07c86e 40#endif
a0d0e21e 41
2986a63f
JH
42#ifdef NETWARE
43NETDB_DEFINE_CONTEXT
44NETINET_DEFINE_CONTEXT
45#endif
46
6b1016b5
JH
47#ifdef I_SYSUIO
48# include <sys/uio.h>
49#endif
50
a0d0e21e 51#ifndef AF_NBS
9cc6feab 52# undef PF_NBS
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LW
53#endif
54
55#ifndef AF_X25
9cc6feab 56# undef PF_X25
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LW
57#endif
58
8e07c86e 59#ifndef INADDR_NONE
9cc6feab 60# define INADDR_NONE 0xffffffff
8e07c86e 61#endif /* INADDR_NONE */
7e1af8bc 62#ifndef INADDR_BROADCAST
9cc6feab 63# define INADDR_BROADCAST 0xffffffff
7e1af8bc 64#endif /* INADDR_BROADCAST */
8e07c86e 65#ifndef INADDR_LOOPBACK
9cc6feab 66# define INADDR_LOOPBACK 0x7F000001
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AD
67#endif /* INADDR_LOOPBACK */
68
7e1af8bc
PP
69#ifndef HAS_INET_ATON
70
a062834f 71/*
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PP
72 * Check whether "cp" is a valid ascii representation
73 * of an Internet address and convert to a binary address.
74 * Returns 1 if the address is valid, 0 if not.
75 * This replaces inet_addr, the return value from which
76 * cannot distinguish between failure and a local broadcast address.
77 */
78static int
f0f333f4 79my_inet_aton(register const char *cp, struct in_addr *addr)
7e1af8bc 80{
c5be433b 81 dTHX;
0caed002 82 register U32 val;
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PP
83 register int base;
84 register char c;
85 int nparts;
86 const char *s;
87 unsigned int parts[4];
88 register unsigned int *pp = parts;
89
dfb6a7ef 90 if (!cp || !*cp)
0caed002 91 return 0;
7e1af8bc
PP
92 for (;;) {
93 /*
94 * Collect number up to ``.''.
95 * Values are specified as for C:
96 * 0x=hex, 0=octal, other=decimal.
97 */
98 val = 0; base = 10;
99 if (*cp == '0') {
100 if (*++cp == 'x' || *cp == 'X')
101 base = 16, cp++;
102 else
103 base = 8;
104 }
105 while ((c = *cp) != '\0') {
106 if (isDIGIT(c)) {
107 val = (val * base) + (c - '0');
108 cp++;
109 continue;
110 }
3280af22 111 if (base == 16 && (s=strchr(PL_hexdigit,c))) {
a062834f 112 val = (val << 4) +
3280af22 113 ((s - PL_hexdigit) & 15);
7e1af8bc
PP
114 cp++;
115 continue;
116 }
117 break;
118 }
119 if (*cp == '.') {
120 /*
121 * Internet format:
122 * a.b.c.d
123 * a.b.c (with c treated as 16-bits)
124 * a.b (with b treated as 24 bits)
125 */
126 if (pp >= parts + 3 || val > 0xff)
127 return 0;
128 *pp++ = val, cp++;
129 } else
130 break;
131 }
132 /*
133 * Check for trailing characters.
134 */
135 if (*cp && !isSPACE(*cp))
136 return 0;
137 /*
138 * Concoct the address according to
139 * the number of parts specified.
140 */
141 nparts = pp - parts + 1; /* force to an int for switch() */
142 switch (nparts) {
143
144 case 1: /* a -- 32 bits */
145 break;
146
147 case 2: /* a.b -- 8.24 bits */
148 if (val > 0xffffff)
149 return 0;
150 val |= parts[0] << 24;
151 break;
152
153 case 3: /* a.b.c -- 8.8.16 bits */
154 if (val > 0xffff)
155 return 0;
156 val |= (parts[0] << 24) | (parts[1] << 16);
157 break;
158
159 case 4: /* a.b.c.d -- 8.8.8.8 bits */
160 if (val > 0xff)
161 return 0;
162 val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
163 break;
164 }
165 addr->s_addr = htonl(val);
166 return 1;
167}
168
169#undef inet_aton
170#define inet_aton my_inet_aton
171
172#endif /* ! HAS_INET_ATON */
173
8e07c86e 174
a0d0e21e 175static int
f0f333f4 176not_here(char *s)
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LW
177{
178 croak("Socket::%s not implemented on this architecture", s);
179 return -1;
180}
181
2528d3bc
JH
182#define PERL_IN_ADDR_S_ADDR_SIZE 4
183
184/*
185* Bad assumptions possible here.
186*
187* Bad Assumption 1: struct in_addr has no other fields
188* than the s_addr (which is the field we care about
189* in here, really). However, we can be fed either 4-byte
190* addresses (from pack("N", ...), or va.b.c.d, or ...),
191* or full struct in_addrs (from e.g. pack_sockaddr_in()),
192* which may or may not be 4 bytes in size.
193*
194* Bad Assumption 2: the s_addr field is a simple type
195* (such as an int, u_int32_t). It can be a bit field,
196* in which case using & (address-of) on it or taking sizeof()
197* wouldn't go over too well. (Those are not attempted
198* now but in case someone thinks to change the below code
199* to use addr.s_addr instead of addr, you have been warned.)
200*
201* Bad Assumption 3: the s_addr is the first field in
202* an in_addr, or that its bytes are the first bytes in
203* an in_addr.
204*
205* These bad assumptions are wrong in UNICOS which has
206* struct in_addr { struct { u_long st_addr:32; } s_da };
207* #define s_addr s_da.st_addr
208* and u_long is 64 bits.
209*
210* --jhi */
211
ee96af8f 212#include "constants.c"
8e07c86e 213
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LW
214MODULE = Socket PACKAGE = Socket
215
ee96af8f 216INCLUDE: constants.xs
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AD
217
218void
219inet_aton(host)
220 char * host
221 CODE:
222 {
fbf77aee 223 struct in_addr ip_address;
8e07c86e 224 struct hostent * phe;
64e1b767
BD
225 int ok =
226 (host != NULL) &&
227 (*host != '\0') &&
228 inet_aton(host, &ip_address);
8e07c86e 229
fbf77aee
JH
230 if (!ok && (phe = gethostbyname(host))) {
231 Copy( phe->h_addr, &ip_address, phe->h_length, char );
7e1af8bc 232 ok = 1;
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AD
233 }
234
235 ST(0) = sv_newmortal();
2528d3bc 236 if (ok)
fbf77aee 237 sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address );
8e07c86e 238 }
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AD
239
240void
241inet_ntoa(ip_address_sv)
242 SV * ip_address_sv
243 CODE:
244 {
245 STRLEN addrlen;
246 struct in_addr addr;
247 char * addr_str;
1d68b939
JH
248 char * ip_address;
249 if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
b2d93eb8 250 croak("Wide character in Socket::inet_ntoa");
2528d3bc
JH
251 ip_address = SvPV(ip_address_sv, addrlen);
252 if (addrlen == sizeof(addr) || addrlen == 4)
253 addr.s_addr =
254 (ip_address[0] & 0xFF) << 24 |
255 (ip_address[1] & 0xFF) << 16 |
256 (ip_address[2] & 0xFF) << 8 |
257 (ip_address[3] & 0xFF);
258 else
259 croak("Bad arg length for %s, length is %d, should be %d",
260 "Socket::inet_ntoa",
261 addrlen, sizeof(addr));
262 /* We could use inet_ntoa() but that is broken
263 * in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
264 * so let's use this sprintf() workaround everywhere. */
1d68b939
JH
265 New(1138, addr_str, 4 * 3 + 3 + 1, char);
266 sprintf(addr_str, "%d.%d.%d.%d",
267 ((addr.s_addr >> 24) & 0xFF),
268 ((addr.s_addr >> 16) & 0xFF),
269 ((addr.s_addr >> 8) & 0xFF),
270 ( addr.s_addr & 0xFF));
271 ST(0) = sv_2mortal(newSVpvn(addr_str, strlen(addr_str)));
272 Safefree(addr_str);
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AD
273 }
274
275void
4633a7c4
LW
276pack_sockaddr_un(pathname)
277 char * pathname
278 CODE:
279 {
25f94b33 280#ifdef I_SYS_UN
4633a7c4 281 struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc 282 STRLEN len;
202975e6 283
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LW
284 Zero( &sun_ad, sizeof sun_ad, char );
285 sun_ad.sun_family = AF_UNIX;
20408e3c
GS
286 len = strlen(pathname);
287 if (len > sizeof(sun_ad.sun_path))
288 len = sizeof(sun_ad.sun_path);
202975e6
IZ
289# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
290 {
291 int off;
292 char *s, *e;
293
294 if (pathname[0] != '/' && pathname[0] != '\\')
295 croak("Relative UNIX domain socket name '%s' unsupported", pathname);
a062834f 296 else if (len < 8
202975e6
IZ
297 || pathname[7] != '/' && pathname[7] != '\\'
298 || !strnicmp(pathname + 1, "socket", 6))
299 off = 7;
300 else
301 off = 0; /* Preserve names starting with \socket\ */
302 Copy( "\\socket", sun_ad.sun_path, off, char);
303 Copy( pathname, sun_ad.sun_path + off, len, char );
304
305 s = sun_ad.sun_path + off - 1;
306 e = s + len + 1;
307 while (++s < e)
308 if (*s = '/')
309 *s = '\\';
310 }
a062834f 311# else /* !( defined OS2 ) */
20408e3c 312 Copy( pathname, sun_ad.sun_path, len, char );
202975e6 313# endif
a062834f 314 if (0) not_here("dummy");
79cb57f6 315 ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, sizeof sun_ad));
25f94b33
AD
316#else
317 ST(0) = (SV *) not_here("pack_sockaddr_un");
318#endif
319
4633a7c4
LW
320 }
321
322void
323unpack_sockaddr_un(sun_sv)
324 SV * sun_sv
f13e1b2f 325 CODE:
4633a7c4 326 {
25f94b33 327#ifdef I_SYS_UN
4633a7c4 328 struct sockaddr_un addr;
fcdb74fc
TB
329 STRLEN sockaddrlen;
330 char * sun_ad = SvPV(sun_sv,sockaddrlen);
331 char * e;
36902e12
RG
332# ifndef __linux__
333 /* On Linux sockaddrlen on sockets returned by accept, recvfrom,
334 getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4
LW
335 if (sockaddrlen != sizeof(addr)) {
336 croak("Bad arg length for %s, length is %d, should be %d",
337 "Socket::unpack_sockaddr_un",
338 sockaddrlen, sizeof(addr));
339 }
36902e12 340# endif
4633a7c4
LW
341
342 Copy( sun_ad, &addr, sizeof addr, char );
343
344 if ( addr.sun_family != AF_UNIX ) {
345 croak("Bad address family for %s, got %d, should be %d",
346 "Socket::unpack_sockaddr_un",
347 addr.sun_family,
348 AF_UNIX);
fcdb74fc
TB
349 }
350 e = addr.sun_path;
351 while (*e && e < addr.sun_path + sizeof addr.sun_path)
352 ++e;
79cb57f6 353 ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - addr.sun_path));
25f94b33
AD
354#else
355 ST(0) = (SV *) not_here("unpack_sockaddr_un");
356#endif
4633a7c4
LW
357 }
358
359void
2528d3bc 360pack_sockaddr_in(port, ip_address_sv)
2c129a17 361 unsigned short port
2528d3bc 362 SV * ip_address_sv
8e07c86e
AD
363 CODE:
364 {
365 struct sockaddr_in sin;
2528d3bc
JH
366 struct in_addr addr;
367 STRLEN addrlen;
368 char * ip_address;
369 if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
370 croak("Wide character in Socket::pack_sockaddr_in");
371 ip_address = SvPV(ip_address_sv, addrlen);
372 if (addrlen == sizeof(addr) || addrlen == 4)
373 addr.s_addr =
374 (ip_address[0] & 0xFF) << 24 |
375 (ip_address[1] & 0xFF) << 16 |
376 (ip_address[2] & 0xFF) << 8 |
377 (ip_address[3] & 0xFF);
378 else
379 croak("Bad arg length for %s, length is %d, should be %d",
380 "Socket::pack_sockaddr_in",
381 addrlen, sizeof(addr));
8e07c86e 382 Zero( &sin, sizeof sin, char );
4633a7c4 383 sin.sin_family = AF_INET;
8e07c86e 384 sin.sin_port = htons(port);
2528d3bc 385 sin.sin_addr.s_addr = htonl(addr.s_addr);
79cb57f6 386 ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
8e07c86e
AD
387 }
388
389void
390unpack_sockaddr_in(sin_sv)
391 SV * sin_sv
392 PPCODE:
393 {
394 STRLEN sockaddrlen;
395 struct sockaddr_in addr;
2c129a17 396 unsigned short port;
2528d3bc 397 struct in_addr ip_address;
8e07c86e
AD
398 char * sin = SvPV(sin_sv,sockaddrlen);
399 if (sockaddrlen != sizeof(addr)) {
400 croak("Bad arg length for %s, length is %d, should be %d",
401 "Socket::unpack_sockaddr_in",
402 sockaddrlen, sizeof(addr));
403 }
8e07c86e 404 Copy( sin, &addr,sizeof addr, char );
4633a7c4
LW
405 if ( addr.sin_family != AF_INET ) {
406 croak("Bad address family for %s, got %d, should be %d",
407 "Socket::unpack_sockaddr_in",
408 addr.sin_family,
409 AF_INET);
a062834f 410 }
8e07c86e
AD
411 port = ntohs(addr.sin_port);
412 ip_address = addr.sin_addr;
413
924508f0 414 EXTEND(SP, 2);
2c129a17 415 PUSHs(sv_2mortal(newSViv((IV) port)));
2528d3bc 416 PUSHs(sv_2mortal(newSVpvn((char *)&ip_address, sizeof ip_address)));
8e07c86e 417 }