// Written by Forest Hale 2003-06-15 and placed into public domain.
+#ifdef WIN32
+# ifdef SUPPORTIPV6
+// Windows XP or higher is required for getaddrinfo, but the inclusion of wspiapi provides fallbacks for older versions
+# define _WIN32_WINNT 0x0501
+# endif
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# ifdef USE_WSPIAPI_H
+# include <wspiapi.h>
+# endif
+#endif
+
#ifndef STANDALONETEST
#include "quakedef.h"
#endif
#include <stdio.h>
#include <time.h>
#include <string.h>
-#ifdef WIN32
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#else
+#ifndef WIN32
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
+#ifdef SUPPORTIPV6
+#include <net/if.h>
+#endif
#endif
#ifdef __MORPHOS__
#define SOCKLEN_T socklen_t
#endif
+#ifdef MSG_DONTWAIT
+#define LHNET_RECVFROM_FLAGS MSG_DONTWAIT
+#define LHNET_SENDTO_FLAGS 0
+#else
+#define LHNET_RECVFROM_FLAGS 0
+#define LHNET_SENDTO_FLAGS 0
+#endif
+
typedef struct lhnetaddressnative_s
{
lhnetaddresstype_t addresstype;
{
struct sockaddr sock;
struct sockaddr_in in;
+#ifdef SUPPORTIPV6
struct sockaddr_in6 in6;
+#endif
}
addr;
}
switch(addresstype)
{
default:
- return 0;
+ break;
case LHNETADDRESSTYPE_LOOP:
// local:port (loopback)
memset(address, 0, sizeof(*address));
address->addr.in.sin_family = AF_INET;
address->addr.in.sin_port = htons((unsigned short)port);
return 1;
+#ifdef SUPPORTIPV6
case LHNETADDRESSTYPE_INET6:
// [0:0:0:0:0:0:0:0]:port (IN6ADDR_ANY, binds to all interfaces)
memset(address, 0, sizeof(*address));
address->addr.in6.sin6_family = AF_INET6;
address->addr.in6.sin6_port = htons((unsigned short)port);
return 1;
+#endif
}
return 0;
}
+#ifdef SUPPORTIPV6
+int LHNETADDRESS_Resolve(lhnetaddressnative_t *address, const char *name, int port)
+{
+ char port_buff [16];
+ struct addrinfo hints;
+ struct addrinfo* addrinf;
+ int err;
+
+ dpsnprintf (port_buff, sizeof (port_buff), "%d", port);
+ port_buff[sizeof (port_buff) - 1] = '\0';
+
+ memset(&hints, 0, sizeof (hints));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ //hints.ai_flags = AI_PASSIVE;
+
+ err = getaddrinfo(name, port_buff, &hints, &addrinf);
+ if (err != 0 || addrinf == NULL)
+ return 0;
+ if (addrinf->ai_addr->sa_family != AF_INET6 && addrinf->ai_addr->sa_family != AF_INET)
+ {
+ freeaddrinfo (addrinf);
+ return 0;
+ }
+
+ // great it worked
+ if (addrinf->ai_addr->sa_family == AF_INET6)
+ {
+ address->addresstype = LHNETADDRESSTYPE_INET6;
+ memcpy(&address->addr.in6, addrinf->ai_addr, sizeof(address->addr.in6));
+ }
+ else
+ {
+ address->addresstype = LHNETADDRESSTYPE_INET4;
+ memcpy(&address->addr.in, addrinf->ai_addr, sizeof(address->addr.in));
+ }
+ address->port = port;
+
+ freeaddrinfo (addrinf);
+ return 1;
+}
+
+int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int defaultport)
+{
+ lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
+ int i, port, d1, d2, d3, d4, resolved;
+ size_t namelen;
+ unsigned char *a;
+ char name[128];
+#ifdef STANDALONETEST
+ char string2[128];
+#endif
+ const char* addr_start;
+ const char* addr_end = NULL;
+ const char* port_name = NULL;
+ int addr_family = AF_UNSPEC;
+
+ if (!address || !string || !*string)
+ return 0;
+ memset(address, 0, sizeof(*address));
+ address->addresstype = LHNETADDRESSTYPE_NONE;
+ port = 0;
+
+ // If it's a bracketed IPv6 address
+ if (string[0] == '[')
+ {
+ const char* end_bracket = strchr(string, ']');
+
+ if (end_bracket == NULL)
+ return 0;
+
+ if (end_bracket[1] == ':')
+ port_name = end_bracket + 2;
+ else if (end_bracket[1] != '\0')
+ return 0;
+
+ addr_family = AF_INET6;
+ addr_start = &string[1];
+ addr_end = end_bracket;
+ }
+ else
+ {
+ const char* first_colon;
+
+ addr_start = string;
+
+ // If it's a numeric non-bracket IPv6 address (-> no port),
+ // or it's a numeric IPv4 address, or a name, with a port
+ first_colon = strchr(string, ':');
+ if (first_colon != NULL)
+ {
+ const char* last_colon = strrchr(first_colon + 1, ':');
+
+ // If it's an numeric IPv4 address, or a name, with a port
+ if (last_colon == NULL)
+ {
+ addr_end = first_colon;
+ port_name = first_colon + 1;
+ }
+ else
+ addr_family = AF_INET6;
+ }
+ }
+
+ if (addr_end != NULL)
+ namelen = addr_end - addr_start;
+ else
+ namelen = strlen (addr_start);
+
+ if (namelen >= sizeof(name))
+ namelen = sizeof(name) - 1;
+ memcpy (name, addr_start, namelen);
+ name[namelen] = 0;
+
+ if (port_name)
+ port = atoi(port_name);
+
+ if (port == 0)
+ port = defaultport;
+
+ // handle loopback
+ if (!strcmp(name, "local"))
+ {
+ address->addresstype = LHNETADDRESSTYPE_LOOP;
+ address->port = port;
+ return 1;
+ }
+ // try to parse as dotted decimal ipv4 address first
+ // note this supports partial ip addresses
+ d1 = d2 = d3 = d4 = 0;
+#if _MSC_VER >= 1400
+#define sscanf sscanf_s
+#endif
+ if (addr_family != AF_INET6 &&
+ sscanf(name, "%d.%d.%d.%d", &d1, &d2, &d3, &d4) >= 1 && (unsigned int)d1 < 256 && (unsigned int)d2 < 256 && (unsigned int)d3 < 256 && (unsigned int)d4 < 256)
+ {
+ // parsed a valid ipv4 address
+ address->addresstype = LHNETADDRESSTYPE_INET4;
+ address->port = port;
+ address->addr.in.sin_family = AF_INET;
+ address->addr.in.sin_port = htons((unsigned short)port);
+ a = (unsigned char *)&address->addr.in.sin_addr;
+ a[0] = d1;
+ a[1] = d2;
+ a[2] = d3;
+ a[3] = d4;
+#ifdef STANDALONETEST
+ LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
+ printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %s\n", string, string2);
+#endif
+ return 1;
+ }
+ for (i = 0;i < MAX_NAMECACHE;i++)
+ if (!strcmp(namecache[i].name, name))
+ break;
+#ifdef STANDALONETEST
+ if (i < MAX_NAMECACHE)
+#else
+ if (i < MAX_NAMECACHE && realtime < namecache[i].expirationtime)
+#endif
+ {
+ *address = namecache[i].address;
+ address->port = port;
+ if (address->addresstype == LHNETADDRESSTYPE_INET6)
+ {
+ address->addr.in6.sin6_port = htons((unsigned short)port);
+ return 1;
+ }
+ else if (address->addresstype == LHNETADDRESSTYPE_INET4)
+ {
+ address->addr.in.sin_port = htons((unsigned short)port);
+ return 1;
+ }
+ return 0;
+ }
+
+ for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
+ namecache[namecacheposition].name[i] = name[i];
+ namecache[namecacheposition].name[i] = 0;
+#ifndef STANDALONETEST
+ namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
+#endif
+
+ // try resolving the address (handles dns and other ip formats)
+ resolved = LHNETADDRESS_Resolve(address, name, port);
+ if (resolved)
+ {
+#ifdef STANDALONETEST
+ const char *protoname;
+
+ switch (address->addresstype)
+ {
+ case LHNETADDRESSTYPE_INET6:
+ protoname = "ipv6";
+ break;
+ case LHNETADDRESSTYPE_INET4:
+ protoname = "ipv4";
+ break;
+ default:
+ protoname = "UNKNOWN";
+ break;
+ }
+ LHNETADDRESS_ToString(vaddress, string2, sizeof(string2), 1);
+ Con_Printf("LHNETADDRESS_Resolve(\"%s\") returned %s address %s\n", string, protoname, string2);
+#endif
+ namecache[namecacheposition].address = *address;
+ }
+ else
+ {
+#ifdef STANDALONETEST
+ printf("name resolution failed on address \"%s\"\n", name);
+#endif
+ namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
+ }
+
+ namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
+ return resolved;
+}
+#else
int LHNETADDRESS_FromString(lhnetaddress_t *vaddress, const char *string, int defaultport)
{
lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
address->port = port;
if (address->addresstype == LHNETADDRESSTYPE_INET6)
{
+#ifdef SUPPORTIPV6
address->addr.in6.sin6_port = htons((unsigned short)port);
return 1;
+#endif
}
else if (address->addresstype == LHNETADDRESSTYPE_INET4)
{
{
if (hostentry->h_addrtype == AF_INET6)
{
+#ifdef SUPPORTIPV6
// great it worked
address->addresstype = LHNETADDRESSTYPE_INET6;
address->port = port;
printf("gethostbyname(\"%s\") returned ipv6 address %s\n", string, string2);
#endif
return 1;
+#endif
}
else if (hostentry->h_addrtype == AF_INET)
{
namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
return 0;
}
+#endif
int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stringbuffersize, int includeport)
{
}
}
break;
+#ifdef SUPPORTIPV6
case LHNETADDRESSTYPE_INET6:
a = (const unsigned char *)(&address->addr.in6.sin6_addr);
if (includeport)
}
}
break;
+#endif
}
return 0;
}
return LHNETADDRESSTYPE_NONE;
}
+const char *LHNETADDRESS_GetInterfaceName(const lhnetaddress_t *vaddress)
+{
+#ifdef SUPPORTIPV6
+ lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
+
+ if (address && address->addresstype == LHNETADDRESSTYPE_INET6)
+ {
+#ifndef _WIN32
+
+ static char ifname [IF_NAMESIZE];
+
+ if (if_indextoname(address->addr.in6.sin6_scope_id, ifname) == ifname)
+ return ifname;
+
+#else
+
+ // The Win32 API doesn't have if_indextoname() until Windows Vista,
+ // but luckily it just uses the interface ID as the interface name
+
+ static char ifname [16];
+
+ if (dpsnprintf(ifname, sizeof(ifname), "%lu", address->addr.in6.sin6_scope_id) > 0)
+ return ifname;
+
+#endif
+ }
+#endif
+
+ return NULL;
+}
+
int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
{
if (!address)
case LHNETADDRESSTYPE_INET4:
address->addr.in.sin_port = htons((unsigned short)port);
return 1;
+#ifdef SUPPORTIPV6
case LHNETADDRESSTYPE_INET6:
address->addr.in6.sin6_port = htons((unsigned short)port);
return 1;
+#endif
default:
return 0;
}
if (address1->port != address2->port)
return -1;
return 0;
+#ifdef SUPPORTIPV6
case LHNETADDRESSTYPE_INET6:
if (address1->addr.in6.sin6_family != address2->addr.in6.sin6_family)
return 1;
if (address1->port != address2->port)
return -1;
return 0;
+#endif
default:
return 1;
}
void LHNET_SleepUntilPacket_Microseconds(int microseconds)
{
+#ifdef FD_SET
fd_set fdreadset;
struct timeval tv;
int lastfd;
tv.tv_sec = microseconds / 1000000;
tv.tv_usec = microseconds % 1000000;
select(lastfd + 1, &fdreadset, NULL, NULL, &tv);
+#else
+ Sys_Sleep(microseconds);
+#endif
}
lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
}
break;
case LHNETADDRESSTYPE_INET4:
+#ifdef SUPPORTIPV6
case LHNETADDRESSTYPE_INET6:
+#endif
#ifdef WIN32
if (lhnet_didWSAStartup)
{
#endif
+#ifdef SUPPORTIPV6
if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? PF_INET6 : PF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
+#else
+ if ((lhnetsocket->inetsocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) != -1)
+#endif
{
#ifdef WIN32
- u_long _true = 1;
u_long _false = 0;
+#endif
+#ifdef MSG_DONTWAIT
+ if (1)
+#else
+#ifdef WIN32
+ u_long _true = 1;
#else
char _true = 1;
#endif
if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
+#endif
{
- lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
- SOCKLEN_T namelen;
- int bindresult;
- if (address->addresstype == LHNETADDRESSTYPE_INET6)
- {
- namelen = sizeof(localaddress->addr.in6);
- bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
- if (bindresult != -1)
- getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
- }
- else
+#ifdef IPV6_V6ONLY
+ // We need to set this flag to tell the OS that we only listen on IPv6. If we don't
+ // most OSes will create a dual-protocol socket that also listens on IPv4. In this case
+ // if an IPv4 socket is already bound to the port we want, our bind() call will fail.
+ int ipv6_only = 1;
+ if (address->addresstype != LHNETADDRESSTYPE_INET6
+ || setsockopt (lhnetsocket->inetsocket, IPPROTO_IPV6, IPV6_V6ONLY,
+ (const char *)&ipv6_only, sizeof(ipv6_only)) == 0
+#ifdef WIN32
+ // The Win32 API only supports IPV6_V6ONLY since Windows Vista, but fortunately
+ // the default value is what we want on Win32 anyway (IPV6_V6ONLY = true)
+ || SOCKETERRNO == WSAENOPROTOOPT
+#endif
+ )
+#endif
{
- namelen = sizeof(localaddress->addr.in);
- bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
+ lhnetaddressnative_t *localaddress = (lhnetaddressnative_t *)&lhnetsocket->address;
+ SOCKLEN_T namelen;
+ int bindresult;
+#ifdef SUPPORTIPV6
+ if (address->addresstype == LHNETADDRESSTYPE_INET6)
+ {
+ namelen = sizeof(localaddress->addr.in6);
+ bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
+ if (bindresult != -1)
+ getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
+ }
+ else
+#endif
+ {
+ namelen = sizeof(localaddress->addr.in);
+ bindresult = bind(lhnetsocket->inetsocket, &localaddress->addr.sock, namelen);
+ if (bindresult != -1)
+ getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
+ }
if (bindresult != -1)
- getsockname(lhnetsocket->inetsocket, &localaddress->addr.sock, &namelen);
- }
- if (bindresult != -1)
- {
- int i = 1;
- // enable broadcast on this socket
- setsockopt(lhnetsocket->inetsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i));
- lhnetsocket->next = &lhnet_socketlist;
- lhnetsocket->prev = lhnetsocket->next->prev;
- lhnetsocket->next->prev = lhnetsocket;
- lhnetsocket->prev->next = lhnetsocket;
+ {
+ int i = 1;
+ // enable broadcast on this socket
+ setsockopt(lhnetsocket->inetsocket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i));
+ lhnetsocket->next = &lhnet_socketlist;
+ lhnetsocket->prev = lhnetsocket->next->prev;
+ lhnetsocket->next->prev = lhnetsocket;
+ lhnetsocket->prev->next = lhnetsocket;
#ifdef WIN32
- if (ioctlsocket(lhnetsocket->inetsocket, SIO_UDP_CONNRESET, &_false) == -1)
- Con_DPrintf("LHNET_OpenSocket_Connectionless: ioctlsocket SIO_UDP_CONNRESET returned error: %s\n", LHNETPRIVATE_StrError());
+ if (ioctlsocket(lhnetsocket->inetsocket, SIO_UDP_CONNRESET, &_false) == -1)
+ Con_DPrintf("LHNET_OpenSocket_Connectionless: ioctlsocket SIO_UDP_CONNRESET returned error: %s\n", LHNETPRIVATE_StrError());
#endif
- return lhnetsocket;
+ return lhnetsocket;
+ }
+ else
+ Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError());
}
+#ifdef IPV6_V6ONLY
else
- Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError());
+ Con_Printf("LHNET_OpenSocket_Connectionless: setsockopt(IPV6_V6ONLY) returned error: %s\n", LHNETPRIVATE_StrError());
+#endif
}
else
Con_Printf("LHNET_OpenSocket_Connectionless: ioctlsocket returned error: %s\n", LHNETPRIVATE_StrError());
}
else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
{
- unsigned int inetaddresslength;
+ SOCKLEN_T inetaddresslength;
address->addresstype = LHNETADDRESSTYPE_NONE;
inetaddresslength = sizeof(address->addr.in);
- value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, &address->addr.sock, &inetaddresslength);
+ value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, LHNET_RECVFROM_FLAGS, &address->addr.sock, &inetaddresslength);
if (value > 0)
{
address->addresstype = LHNETADDRESSTYPE_INET4;
address->port = ntohs(address->addr.in.sin_port);
return value;
}
- else if (value == -1)
+ else if (value < 0)
{
int e = SOCKETERRNO;
if (e == EWOULDBLOCK)
Con_Printf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
}
}
+#ifdef SUPPORTIPV6
else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
{
- unsigned int inetaddresslength;
+ SOCKLEN_T inetaddresslength;
address->addresstype = LHNETADDRESSTYPE_NONE;
inetaddresslength = sizeof(address->addr.in6);
- value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, &address->addr.sock, &inetaddresslength);
+ value = recvfrom(lhnetsocket->inetsocket, (char *)content, maxcontentlength, 0, &address->addr.sock, &inetaddresslength);
if (value > 0)
{
address->addresstype = LHNETADDRESSTYPE_INET6;
Con_Printf("LHNET_Read: recvfrom returned error: %s\n", LHNETPRIVATE_StrError());
}
}
+#endif
return value;
}
}
else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
{
- value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addr.in, sizeof(struct sockaddr_in));
+ value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, LHNET_SENDTO_FLAGS, (struct sockaddr *)&address->addr.in, sizeof(struct sockaddr_in));
if (value == -1)
{
if (SOCKETERRNO == EWOULDBLOCK)
Con_Printf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
}
}
+#ifdef SUPPORTIPV6
else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
{
- value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addr.in6, sizeof(struct sockaddr_in6));
+ value = sendto(lhnetsocket->inetsocket, (char *)content, contentlength, 0, (struct sockaddr *)&address->addr.in6, sizeof(struct sockaddr_in6));
if (value == -1)
{
if (SOCKETERRNO == EWOULDBLOCK)
Con_Printf("LHNET_Write: sendto returned error: %s\n", LHNETPRIVATE_StrError());
}
}
+#endif
return value;
}
projects / xonotic / darkplaces.git / blobdiff