// Written by Forest Hale 2003-06-15 and placed into public domain.
+#ifdef WIN32
+// Windows XP or higher is required for getaddrinfo, but the inclusion of wspiapi provides fallbacks for older versions
+#define _WIN32_WINNT 0x0501
+#include <winsock2.h>
+#include <ws2tcpip.h>
+//#include <wspiapi.h>
+#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>
+#include <net/if.h>
#endif
#ifdef __MORPHOS__
typedef struct lhnetaddressnative_s
{
- int addresstype;
+ lhnetaddresstype_t addresstype;
int port;
union
{
namecache[MAX_NAMECACHE];
static int namecacheposition = 0;
-int LHNETADDRESS_FromPort(lhnetaddress_t *vaddress, int addresstype, int port)
+int LHNETADDRESS_FromPort(lhnetaddress_t *vaddress, lhnetaddresstype_t addresstype, int port)
{
lhnetaddressnative_t *address = (lhnetaddressnative_t *)vaddress;
if (!address)
return 0;
switch(addresstype)
{
+ default:
+ return 0;
case LHNETADDRESSTYPE_LOOP:
// local:port (loopback)
memset(address, 0, sizeof(*address));
return 0;
}
+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, namelen, d1, d2, d3, d4;
- struct hostent *hostentry;
+ int i, port, d1, d2, d3, d4, resolved;
+ size_t namelen;
unsigned char *a;
- const char *colon;
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;
- colon = strrchr(string, ':');
- if (colon)
- port = atoi(colon + 1);
+
+ // 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
- colon = string + strlen(string);
- if (port == 0)
- port = defaultport;
- namelen = colon - string;
- if (namelen > 127)
- namelen = 127;
- if (string[0] == '[' && namelen > 0 && string[namelen-1] == ']') // ipv6
{
- string++;
- namelen -= 2;
+ 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;
+ }
}
- memcpy(name, string, namelen);
+
+ 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"))
{
#if _MSC_VER >= 1400
#define sscanf sscanf_s
#endif
- if (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)
+ 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;
}
return 0;
}
- // try gethostbyname (handles dns and other ip formats)
- hostentry = gethostbyname(name);
- if (hostentry)
- {
- if (hostentry->h_addrtype == AF_INET6)
- {
- // great it worked
- address->addresstype = LHNETADDRESSTYPE_INET6;
- address->port = port;
- address->addr.in6.sin6_family = hostentry->h_addrtype;
- address->addr.in6.sin6_port = htons((unsigned short)port);
- memcpy(&address->addr.in6.sin6_addr, hostentry->h_addr_list[0], sizeof(address->addr.in6.sin6_addr));
- for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++)
- namecache[namecacheposition].name[i] = name[i];
- namecache[namecacheposition].name[i] = 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
+ namecache[namecacheposition].expirationtime = realtime + 12 * 3600; // 12 hours
#endif
- namecache[namecacheposition].address = *address;
- namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
+
+ // try resolving the address (handles dns and other ip formats)
+ resolved = LHNETADDRESS_Resolve(address, name, port);
+ if (resolved)
+ {
#ifdef STANDALONETEST
- LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
- printf("gethostbyname(\"%s\") returned ipv6 address %s\n", string, string2);
-#endif
- return 1;
- }
- else if (hostentry->h_addrtype == AF_INET)
+ const char *protoname;
+
+ switch (address->addresstype)
{
- // great it worked
- address->addresstype = LHNETADDRESSTYPE_INET4;
- address->port = port;
- address->addr.in.sin_family = hostentry->h_addrtype;
- address->addr.in.sin_port = htons((unsigned short)port);
- memcpy(&address->addr.in.sin_addr, hostentry->h_addr_list[0], sizeof(address->addr.in.sin_addr));
- 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
- namecache[namecacheposition].address = *address;
- namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
-#ifdef STANDALONETEST
- LHNETADDRESS_ToString(address, string2, sizeof(string2), 1);
- printf("gethostbyname(\"%s\") returned ipv4 address %s\n", string, string2);
-#endif
- return 1;
+ 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("gethostbyname failed on address \"%s\"\n", name);
-#endif
- 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
+ printf("name resolution failed on address \"%s\"\n", name);
#endif
- namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
+ namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE;
+ }
+
namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE;
- return 0;
+ return resolved;
}
int LHNETADDRESS_ToString(const lhnetaddress_t *vaddress, char *string, int stringbuffersize, int includeport)
return LHNETADDRESSTYPE_NONE;
}
+const char *LHNETADDRESS_GetInterfaceName(const lhnetaddress_t *vaddress)
+{
+ 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
+ }
+
+ return NULL;
+}
+
int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
{
if (!address)
#endif
if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
{
- 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;
+ 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
+ {
+ 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, 0, &address->addr.sock, &inetaddresslength);
if (value > 0)
{
address->addresstype = LHNETADDRESSTYPE_INET4;
}
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;
}
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, 0, (struct sockaddr *)&address->addr.in, sizeof(struct sockaddr_in));
if (value == -1)
{
if (SOCKETERRNO == EWOULDBLOCK)
}
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)
projects / xonotic / darkplaces.git / blobdiff