#define PERL_NO_GET_CONTEXT #include "EXTERN.h" #include "perl.h" #include "XSUB.h" #include #ifndef VMS # ifdef I_SYS_TYPES # include # endif # if !defined(ultrix) /* Avoid double definition. */ # include # endif # if defined(USE_SOCKS) && defined(I_SOCKS) # include # endif # ifdef MPE # define PF_INET AF_INET # define PF_UNIX AF_UNIX # define SOCK_RAW 3 # endif # ifdef I_SYS_UN # include # endif /* XXX Configure test for # endif # if defined(__sgi) && !defined(AF_LINK) && defined(PF_LINK) && PF_LINK == AF_LNK # undef PF_LINK # endif # if defined(I_NETINET_IN) || defined(__ultrix__) # include # endif # ifdef I_NETDB # if !defined(ultrix) /* Avoid double definition. */ # include # endif # endif # ifdef I_ARPA_INET # include # endif # ifdef I_NETINET_TCP # include # endif #else # include "sockadapt.h" #endif #ifdef NETWARE NETDB_DEFINE_CONTEXT NETINET_DEFINE_CONTEXT #endif #ifdef I_SYSUIO # include #endif #ifndef AF_NBS # undef PF_NBS #endif #ifndef AF_X25 # undef PF_X25 #endif #ifndef INADDR_NONE # define INADDR_NONE 0xffffffff #endif /* INADDR_NONE */ #ifndef INADDR_BROADCAST # define INADDR_BROADCAST 0xffffffff #endif /* INADDR_BROADCAST */ #ifndef INADDR_LOOPBACK # define INADDR_LOOPBACK 0x7F000001 #endif /* INADDR_LOOPBACK */ #ifndef HAS_INET_ATON /* * Check whether "cp" is a valid ascii representation * of an Internet address and convert to a binary address. * Returns 1 if the address is valid, 0 if not. * This replaces inet_addr, the return value from which * cannot distinguish between failure and a local broadcast address. */ static int my_inet_aton(register const char *cp, struct in_addr *addr) { dTHX; register U32 val; register int base; register char c; int nparts; const char *s; unsigned int parts[4]; register unsigned int *pp = parts; if (!cp || !*cp) return 0; for (;;) { /* * Collect number up to ``.''. * Values are specified as for C: * 0x=hex, 0=octal, other=decimal. */ val = 0; base = 10; if (*cp == '0') { if (*++cp == 'x' || *cp == 'X') base = 16, cp++; else base = 8; } while ((c = *cp) != '\0') { if (isDIGIT(c)) { val = (val * base) + (c - '0'); cp++; continue; } if (base == 16 && (s=strchr(PL_hexdigit,c))) { val = (val << 4) + ((s - PL_hexdigit) & 15); cp++; continue; } break; } if (*cp == '.') { /* * Internet format: * a.b.c.d * a.b.c (with c treated as 16-bits) * a.b (with b treated as 24 bits) */ if (pp >= parts + 3 || val > 0xff) return 0; *pp++ = val, cp++; } else break; } /* * Check for trailing characters. */ if (*cp && !isSPACE(*cp)) return 0; /* * Concoct the address according to * the number of parts specified. */ nparts = pp - parts + 1; /* force to an int for switch() */ switch (nparts) { case 1: /* a -- 32 bits */ break; case 2: /* a.b -- 8.24 bits */ if (val > 0xffffff) return 0; val |= parts[0] << 24; break; case 3: /* a.b.c -- 8.8.16 bits */ if (val > 0xffff) return 0; val |= (parts[0] << 24) | (parts[1] << 16); break; case 4: /* a.b.c.d -- 8.8.8.8 bits */ if (val > 0xff) return 0; val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8); break; } addr->s_addr = htonl(val); return 1; } #undef inet_aton #define inet_aton my_inet_aton #endif /* ! HAS_INET_ATON */ static int not_here(const char *s) { croak("Socket::%s not implemented on this architecture", s); return -1; } #define PERL_IN_ADDR_S_ADDR_SIZE 4 /* * Bad assumptions possible here. * * Bad Assumption 1: struct in_addr has no other fields * than the s_addr (which is the field we care about * in here, really). However, we can be fed either 4-byte * addresses (from pack("N", ...), or va.b.c.d, or ...), * or full struct in_addrs (from e.g. pack_sockaddr_in()), * which may or may not be 4 bytes in size. * * Bad Assumption 2: the s_addr field is a simple type * (such as an int, u_int32_t). It can be a bit field, * in which case using & (address-of) on it or taking sizeof() * wouldn't go over too well. (Those are not attempted * now but in case someone thinks to change the below code * to use addr.s_addr instead of addr, you have been warned.) * * Bad Assumption 3: the s_addr is the first field in * an in_addr, or that its bytes are the first bytes in * an in_addr. * * These bad assumptions are wrong in UNICOS which has * struct in_addr { struct { u_long st_addr:32; } s_da }; * #define s_addr s_da.st_addr * and u_long is 64 bits. * * --jhi */ #include "const-c.inc" MODULE = Socket PACKAGE = Socket INCLUDE: const-xs.inc void inet_aton(host) char * host CODE: { struct in_addr ip_address; struct hostent * phe; int ok = (*host != '\0') && inet_aton(host, &ip_address); if (!ok && (phe = gethostbyname(host)) && phe->h_addrtype == AF_INET && phe->h_length == 4) { Copy( phe->h_addr, &ip_address, phe->h_length, char ); ok = 1; } ST(0) = sv_newmortal(); if (ok) sv_setpvn( ST(0), (char *)&ip_address, sizeof ip_address ); } void inet_ntoa(ip_address_sv) SV * ip_address_sv CODE: { STRLEN addrlen; struct in_addr addr; char * addr_str; char * ip_address; if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1)) croak("Wide character in %s", "Socket::inet_ntoa"); ip_address = SvPVbyte(ip_address_sv, addrlen); if (addrlen == sizeof(addr) || addrlen == 4) addr.s_addr = (ip_address[0] & 0xFF) << 24 | (ip_address[1] & 0xFF) << 16 | (ip_address[2] & 0xFF) << 8 | (ip_address[3] & 0xFF); else croak("Bad arg length for %s, length is %d, should be %d", "Socket::inet_ntoa", addrlen, sizeof(addr)); /* We could use inet_ntoa() but that is broken * in HP-UX + GCC + 64bitint (returns "0.0.0.0"), * so let's use this sprintf() workaround everywhere. * This is also more threadsafe than using inet_ntoa(). */ Newx(addr_str, 4 * 3 + 3 + 1, char); /* IPv6? */ sprintf(addr_str, "%d.%d.%d.%d", ((addr.s_addr >> 24) & 0xFF), ((addr.s_addr >> 16) & 0xFF), ((addr.s_addr >> 8) & 0xFF), ( addr.s_addr & 0xFF)); ST(0) = newSVpvn_flags(addr_str, strlen(addr_str), SVs_TEMP); Safefree(addr_str); } void sockaddr_family(sockaddr) SV * sockaddr PREINIT: STRLEN sockaddr_len; char *sockaddr_pv = SvPVbyte(sockaddr, sockaddr_len); CODE: if (sockaddr_len < offsetof(struct sockaddr, sa_data)) { croak("Bad arg length for %s, length is %d, should be at least %d", "Socket::sockaddr_family", sockaddr_len, offsetof(struct sockaddr, sa_data)); } ST(0) = sv_2mortal(newSViv(((struct sockaddr*)sockaddr_pv)->sa_family)); void pack_sockaddr_un(pathname) SV * pathname CODE: { #ifdef I_SYS_UN struct sockaddr_un sun_ad; /* fear using sun */ STRLEN len; char * pathname_pv; int addr_len; Zero( &sun_ad, sizeof sun_ad, char ); sun_ad.sun_family = AF_UNIX; pathname_pv = SvPV(pathname,len); if (len > sizeof(sun_ad.sun_path)) len = sizeof(sun_ad.sun_path); # ifdef OS2 /* Name should start with \socket\ and contain backslashes! */ { int off; char *s, *e; if (pathname_pv[0] != '/' && pathname_pv[0] != '\\') croak("Relative UNIX domain socket name '%s' unsupported", pathname_pv); else if (len < 8 || pathname_pv[7] != '/' && pathname_pv[7] != '\\' || !strnicmp(pathname_pv + 1, "socket", 6)) off = 7; else off = 0; /* Preserve names starting with \socket\ */ Copy( "\\socket", sun_ad.sun_path, off, char); Copy( pathname_pv, sun_ad.sun_path + off, len, char ); s = sun_ad.sun_path + off - 1; e = s + len + 1; while (++s < e) if (*s = '/') *s = '\\'; } # else /* !( defined OS2 ) */ Copy( pathname_pv, sun_ad.sun_path, len, char ); # endif if (0) not_here("dummy"); if (len > 1 && sun_ad.sun_path[0] == '\0') { /* Linux-style abstract-namespace socket. * The name is not a file name, but an array of arbitrary * character, starting with \0 and possibly including \0s, * therefore the length of the structure must denote the * end of that character array */ addr_len = (char *)&(sun_ad.sun_path) - (char *)&sun_ad + len; } else { addr_len = sizeof sun_ad; } ST(0) = newSVpvn_flags((char *)&sun_ad, addr_len, SVs_TEMP); #else ST(0) = (SV *) not_here("pack_sockaddr_un"); #endif } void unpack_sockaddr_un(sun_sv) SV * sun_sv CODE: { #ifdef I_SYS_UN struct sockaddr_un addr; STRLEN sockaddrlen; char * sun_ad = SvPVbyte(sun_sv,sockaddrlen); int addr_len; # ifndef __linux__ /* On Linux sockaddrlen on sockets returned by accept, recvfrom, getpeername and getsockname is not equal to sizeof(addr). */ if (sockaddrlen != sizeof(addr)) { croak("Bad arg length for %s, length is %d, should be %d", "Socket::unpack_sockaddr_un", sockaddrlen, sizeof(addr)); } # endif Copy( sun_ad, &addr, sizeof addr, char ); if ( addr.sun_family != AF_UNIX ) { croak("Bad address family for %s, got %d, should be %d", "Socket::unpack_sockaddr_un", addr.sun_family, AF_UNIX); } if (addr.sun_path[0] == '\0') { /* Linux-style abstract socket address begins with a nul * and can contain nuls. */ addr_len = (char *)&addr - (char *)&(addr.sun_path) + sockaddrlen; } else { for (addr_len = 0; addr.sun_path[addr_len] && addr_len < sizeof addr.sun_path; addr_len++); } ST(0) = newSVpvn_flags(addr.sun_path, addr_len, SVs_TEMP); #else ST(0) = (SV *) not_here("unpack_sockaddr_un"); #endif } void pack_sockaddr_in(port, ip_address_sv) unsigned short port SV * ip_address_sv CODE: { struct sockaddr_in sin; struct in_addr addr; STRLEN addrlen; char * ip_address; if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1)) croak("Wide character in %s", "Socket::pack_sockaddr_in"); ip_address = SvPVbyte(ip_address_sv, addrlen); if (addrlen == sizeof(addr) || addrlen == 4) addr.s_addr = (ip_address[0] & 0xFF) << 24 | (ip_address[1] & 0xFF) << 16 | (ip_address[2] & 0xFF) << 8 | (ip_address[3] & 0xFF); else croak("Bad arg length for %s, length is %d, should be %d", "Socket::pack_sockaddr_in", addrlen, sizeof(addr)); Zero( &sin, sizeof sin, char ); sin.sin_family = AF_INET; sin.sin_port = htons(port); sin.sin_addr.s_addr = htonl(addr.s_addr); ST(0) = newSVpvn_flags((char *)&sin, sizeof (sin), SVs_TEMP); } void unpack_sockaddr_in(sin_sv) SV * sin_sv PPCODE: { STRLEN sockaddrlen; struct sockaddr_in addr; unsigned short port; struct in_addr ip_address; char * sin = SvPVbyte(sin_sv,sockaddrlen); if (sockaddrlen != sizeof(addr)) { croak("Bad arg length for %s, length is %d, should be %d", "Socket::unpack_sockaddr_in", sockaddrlen, sizeof(addr)); } Copy( sin, &addr,sizeof addr, char ); if ( addr.sin_family != AF_INET ) { croak("Bad address family for %s, got %d, should be %d", "Socket::unpack_sockaddr_in", addr.sin_family, AF_INET); } port = ntohs(addr.sin_port); ip_address = addr.sin_addr; EXTEND(SP, 2); PUSHs(sv_2mortal(newSViv((IV) port))); PUSHs(newSVpvn_flags((char *)&ip_address, sizeof(ip_address), SVs_TEMP)); } void inet_ntop(af, ip_address_sv) int af SV * ip_address_sv CODE: #ifdef HAS_INETNTOP STRLEN addrlen, struct_size; struct in6_addr addr; char str[INET6_ADDRSTRLEN]; char *ip_address = SvPV(ip_address_sv, addrlen); if(af == AF_INET) { struct_size = sizeof(struct in_addr); } else if(af == AF_INET6) { struct_size = sizeof(struct in6_addr); } else { croak("Bad address family for %s, got %d, should be either AF_INET or AF_INET6", "Socket::inet_ntop", af); } Copy( ip_address, &addr, sizeof addr, char ); inet_ntop(af, &addr, str, INET6_ADDRSTRLEN); ST(0) = newSVpvn_flags(str, strlen(str), SVs_TEMP); #else ST(0) = (SV *)not_here("inet_ntop"); #endif void inet_pton(af, host) int af const char * host CODE: #ifdef HAS_INETPTON int ok; struct in6_addr ip_address; if(af != AF_INET && af != AF_INET6) { croak("Bad address family for %s, got %d, should be either AF_INET or AF_INET6", "Socket::inet_pton", af); } ok = (*host != '\0') && inet_pton(af, host, &ip_address); ST(0) = sv_newmortal(); if (ok) { sv_setpvn( ST(0), (char *)&ip_address, af == AF_INET6 ? sizeof(ip_address) : sizeof(struct in_addr) ); } #else ST(0) = (SV *)not_here("inet_pton"); #endif