This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Still more Socket portability tweaking.
[perl5.git] / ext / Socket / Socket.xs
CommitLineData
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
a0d0e21e
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/*
7e1af8bc
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;
7e1af8bc
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
0caed002
CS
90 if (!cp)
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
ee96af8f 182#include "constants.c"
8e07c86e 183
21bbcf20
JH
184#define PERL_IN_ADDR_S_ADDR_SIZE 4
185
186/*
187 * Bad assumptions possible here.
188 *
189 * Bad Assumption 1: struct in_addr has no other fields
190 * than the s_addr (which is the field we care about
191 * in here, really). However, we can be fed either 4-byte
192 * addresses (from pack("N", ...), or va.b.c.d, or ...),
193 * or full struct in_addrs (from e.g. pack_sockaddr_in()),
194 * which may or may not be 4 bytes in size.
195 *
196 * Bad Assumption 2: the s_addr field is a simple type
197 * (such as an int, u_int32_t). It can be a bit field,
198 * in which case using & (address-of) on it or taking sizeof()
199 * wouldn't go over too well. (Those are not attempted
200 * now but in case someone thinks to change the below code
201 * to use addr.s_addr instead of addr, you have been warned.)
202 *
203 * Bad Assumption 3: the s_addr is the first field in
204 * an in_addr, or that its bytes are the first bytes in
205 * an in_addr.
206 *
207 * These bad assumptions are wrong in UNICOS which has
208 * struct in_addr { struct { u_long st_addr:32; } s_da };
209 * #define s_addr s_da.st_addr
210 * and u_long is 64 bits.
211 *
212 * --jhi */
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 {
21bbcf20
JH
223 struct in_addr addr;
224 char saddr[PERL_IN_ADDR_S_ADDR_SIZE];
8e07c86e 225 struct hostent * phe;
21bbcf20 226 int ok;
8e07c86e 227
21bbcf20
JH
228 ok = inet_aton(host, &addr);
229 if (ok) {
230 saddr[0] = (addr.s_addr >> 24) & 0xFF;
231 saddr[1] = (addr.s_addr >> 16) & 0xFF;
232 saddr[2] = (addr.s_addr >> 8) & 0xFF;
233 saddr[3] = (addr.s_addr ) & 0xFF;
234 }
235 else if (phe = gethostbyname(host)) {
236 Copy( phe->h_addr, saddr, phe->h_length, char );
7e1af8bc 237 ok = 1;
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AD
238 }
239
240 ST(0) = sv_newmortal();
7e1af8bc 241 if (ok) {
21bbcf20 242 sv_setpvn( ST(0), saddr, PERL_IN_ADDR_S_ADDR_SIZE);
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AD
243 }
244 }
245
246void
247inet_ntoa(ip_address_sv)
248 SV * ip_address_sv
249 CODE:
250 {
251 STRLEN addrlen;
252 struct in_addr addr;
253 char * addr_str;
1d68b939
JH
254 char * ip_address;
255 if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
b2d93eb8 256 croak("Wide character in Socket::inet_ntoa");
dc26df50 257 ip_address = SvPV(ip_address_sv, addrlen);
7765ce8d
JH
258 if (addrlen == PERL_IN_ADDR_S_ADDR_SIZE) {
259 /* It must be (better be) a network-order 32-bit integer.
260 * We can't use any fancy casting of ip_address to pointer ofn
261 * some type (int or long) and the dereferencing that sincen
262 * neither int not long is guaranteed to be 32 bits. */
263 addr.s_addr = (ip_address[0] & 0xFF) << 24;
264 addr.s_addr |= (ip_address[1] & 0xFF) << 16;
265 addr.s_addr |= (ip_address[2] & 0xFF) << 8;
266 addr.s_addr |= (ip_address[3] & 0xFF);
267 }
21bbcf20
JH
268 else {
269 /* It could be a struct in_addr that is not 32 bits. */
270
271 if (addrlen == sizeof(addr))
272 /* This branch could be optimized away if we knew
273 * during compile time what size is struct in_addr.
274 * If it's four, the above code should have worked. */
275 Copy( ip_address, &addr, sizeof addr, char );
276 else {
277 if (PERL_IN_ADDR_S_ADDR_SIZE == sizeof(addr))
278 croak("Bad arg length for %s, length is %d, should be %d",
279 "Socket::inet_ntoa",
280 addrlen, PERL_IN_ADDR_S_ADDR_SIZE);
281 else
282 croak("Bad arg length for %s, length is %d, should be %d or %d",
283 "Socket::inet_ntoa",
284 addrlen, PERL_IN_ADDR_S_ADDR_SIZE, sizeof(addr));
285 }
286 }
dc26df50
JH
287 /* We could use inet_ntoa() but that is broken
288 * in HP-UX + GCC + 64bitint (returns "0.0.0.0"),
289 * so let's use this sprintf() workaround everywhere. */
1d68b939
JH
290 New(1138, addr_str, 4 * 3 + 3 + 1, char);
291 sprintf(addr_str, "%d.%d.%d.%d",
292 ((addr.s_addr >> 24) & 0xFF),
293 ((addr.s_addr >> 16) & 0xFF),
294 ((addr.s_addr >> 8) & 0xFF),
295 ( addr.s_addr & 0xFF));
296 ST(0) = sv_2mortal(newSVpvn(addr_str, strlen(addr_str)));
297 Safefree(addr_str);
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AD
298 }
299
300void
4633a7c4
LW
301pack_sockaddr_un(pathname)
302 char * pathname
303 CODE:
304 {
25f94b33 305#ifdef I_SYS_UN
4633a7c4 306 struct sockaddr_un sun_ad; /* fear using sun */
fcdb74fc 307 STRLEN len;
202975e6 308
4633a7c4
LW
309 Zero( &sun_ad, sizeof sun_ad, char );
310 sun_ad.sun_family = AF_UNIX;
20408e3c
GS
311 len = strlen(pathname);
312 if (len > sizeof(sun_ad.sun_path))
313 len = sizeof(sun_ad.sun_path);
202975e6
IZ
314# ifdef OS2 /* Name should start with \socket\ and contain backslashes! */
315 {
316 int off;
317 char *s, *e;
318
319 if (pathname[0] != '/' && pathname[0] != '\\')
320 croak("Relative UNIX domain socket name '%s' unsupported", pathname);
a062834f 321 else if (len < 8
202975e6
IZ
322 || pathname[7] != '/' && pathname[7] != '\\'
323 || !strnicmp(pathname + 1, "socket", 6))
324 off = 7;
325 else
326 off = 0; /* Preserve names starting with \socket\ */
327 Copy( "\\socket", sun_ad.sun_path, off, char);
328 Copy( pathname, sun_ad.sun_path + off, len, char );
329
330 s = sun_ad.sun_path + off - 1;
331 e = s + len + 1;
332 while (++s < e)
333 if (*s = '/')
334 *s = '\\';
335 }
a062834f 336# else /* !( defined OS2 ) */
20408e3c 337 Copy( pathname, sun_ad.sun_path, len, char );
202975e6 338# endif
a062834f 339 if (0) not_here("dummy");
79cb57f6 340 ST(0) = sv_2mortal(newSVpvn((char *)&sun_ad, sizeof sun_ad));
25f94b33
AD
341#else
342 ST(0) = (SV *) not_here("pack_sockaddr_un");
343#endif
344
4633a7c4
LW
345 }
346
347void
348unpack_sockaddr_un(sun_sv)
349 SV * sun_sv
f13e1b2f 350 CODE:
4633a7c4 351 {
25f94b33 352#ifdef I_SYS_UN
4633a7c4 353 struct sockaddr_un addr;
fcdb74fc
TB
354 STRLEN sockaddrlen;
355 char * sun_ad = SvPV(sun_sv,sockaddrlen);
356 char * e;
36902e12
RG
357# ifndef __linux__
358 /* On Linux sockaddrlen on sockets returned by accept, recvfrom,
359 getpeername and getsockname is not equal to sizeof(addr). */
4633a7c4
LW
360 if (sockaddrlen != sizeof(addr)) {
361 croak("Bad arg length for %s, length is %d, should be %d",
362 "Socket::unpack_sockaddr_un",
363 sockaddrlen, sizeof(addr));
364 }
36902e12 365# endif
4633a7c4
LW
366
367 Copy( sun_ad, &addr, sizeof addr, char );
368
369 if ( addr.sun_family != AF_UNIX ) {
370 croak("Bad address family for %s, got %d, should be %d",
371 "Socket::unpack_sockaddr_un",
372 addr.sun_family,
373 AF_UNIX);
fcdb74fc
TB
374 }
375 e = addr.sun_path;
376 while (*e && e < addr.sun_path + sizeof addr.sun_path)
377 ++e;
79cb57f6 378 ST(0) = sv_2mortal(newSVpvn(addr.sun_path, e - addr.sun_path));
25f94b33
AD
379#else
380 ST(0) = (SV *) not_here("unpack_sockaddr_un");
381#endif
4633a7c4
LW
382 }
383
384void
385pack_sockaddr_in(port,ip_address)
2c129a17 386 unsigned short port
8e07c86e
AD
387 char * ip_address
388 CODE:
389 {
390 struct sockaddr_in sin;
391
392 Zero( &sin, sizeof sin, char );
4633a7c4 393 sin.sin_family = AF_INET;
8e07c86e
AD
394 sin.sin_port = htons(port);
395 Copy( ip_address, &sin.sin_addr, sizeof sin.sin_addr, char );
396
79cb57f6 397 ST(0) = sv_2mortal(newSVpvn((char *)&sin, sizeof sin));
8e07c86e
AD
398 }
399
400void
401unpack_sockaddr_in(sin_sv)
402 SV * sin_sv
403 PPCODE:
404 {
405 STRLEN sockaddrlen;
406 struct sockaddr_in addr;
2c129a17 407 unsigned short port;
8e07c86e 408 struct in_addr ip_address;
21bbcf20 409 char saddr[PERL_IN_ADDR_S_ADDR_SIZE];
8e07c86e
AD
410 char * sin = SvPV(sin_sv,sockaddrlen);
411 if (sockaddrlen != sizeof(addr)) {
412 croak("Bad arg length for %s, length is %d, should be %d",
413 "Socket::unpack_sockaddr_in",
414 sockaddrlen, sizeof(addr));
415 }
8e07c86e 416 Copy( sin, &addr,sizeof addr, char );
4633a7c4
LW
417 if ( addr.sin_family != AF_INET ) {
418 croak("Bad address family for %s, got %d, should be %d",
419 "Socket::unpack_sockaddr_in",
420 addr.sin_family,
421 AF_INET);
a062834f 422 }
8e07c86e
AD
423 port = ntohs(addr.sin_port);
424 ip_address = addr.sin_addr;
21bbcf20
JH
425 saddr[0] = (ip_address.s_addr >> 24) & 0xFF;
426 saddr[1] = (ip_address.s_addr >> 16) & 0xFF;
427 saddr[2] = (ip_address.s_addr >> 8) & 0xFF;
428 saddr[3] = (ip_address.s_addr ) & 0xFF;
8e07c86e 429
924508f0 430 EXTEND(SP, 2);
2c129a17 431 PUSHs(sv_2mortal(newSViv((IV) port)));
21bbcf20 432 PUSHs(sv_2mortal(newSVpvn(saddr, PERL_IN_ADDR_S_ADDR_SIZE)));
8e07c86e 433 }