--- /dev/null
+
+// Written by Forest Hale 2003-06-15 and placed into public domain.
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <string.h>
+#ifdef WIN32
+#include <winsock.h>
+#else
+#include <netdb.h>
+//#include <netinet/in.h>
+//#include <arpa/inet.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#endif
+
+// for Z_Malloc/Z_Free in quake
+#if 1
+#include "zone.h"
+#else
+#define Z_Malloc malloc
+#define Z_Free free
+#endif
+
+#include "lhnet.h"
+
+int LHNETADDRESS_FromPort(lhnetaddress_t *address, int addresstype, int port)
+{
+ switch(addresstype)
+ {
+ case LHNETADDRESSTYPE_LOOP:
+ // local:port (loopback)
+ memset(address, 0, sizeof(*address));
+ address->addresstype = LHNETADDRESSTYPE_LOOP;
+ address->addressdata.loop.port = port;
+ return 1;
+ case LHNETADDRESSTYPE_INET4:
+ // 0.0.0.0:port (INADDR_ANY, binds to all interfaces)
+ memset(address, 0, sizeof(*address));
+ address->addresstype = LHNETADDRESSTYPE_INET4;
+ address->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY;
+ address->addressdata.inet4.port = htons(port);
+ return 1;
+ case LHNETADDRESSTYPE_INET6:
+ // [0:0:0:0:0:0:0:0]:port (IN6ADDR_ANY, binds to all interfaces)
+ memset(address, 0, sizeof(*address));
+ address->addresstype = LHNETADDRESSTYPE_INET6;
+ address->addressdata.inet6.family = LHNETADDRESSTYPE_INET6_FAMILY;
+ address->addressdata.inet6.port = htons(port);
+ return 1;
+ }
+ return 0;
+}
+
+int LHNETADDRESS_FromString(lhnetaddress_t *address, const char *string, int defaultport)
+{
+ int i, port, namelen, number;
+ struct hostent *hostentry;
+ const char *colon;
+ char name[128];
+ memset(address, 0, sizeof(*address));
+ address->addresstype = LHNETADDRESSTYPE_NONE;
+ port = 0;
+ colon = strrchr(string, ':');
+ if (colon)
+ port = atoi(colon + 1);
+ 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;
+ }
+ memcpy(name, string, namelen);
+ name[namelen] = 0;
+ // handle loopback
+ if (!strcmp(name, "local"))
+ {
+ address->addresstype = LHNETADDRESSTYPE_LOOP;
+ address->addressdata.loop.port = port;
+ return 1;
+ }
+ // try to parse with gethostbyname first, because it can handle ipv4 and
+ // ipv6 (in various address formats), as well as dns names
+ for (i = 0;i < 3;i++)
+ {
+ if (i == 0)
+ hostentry = gethostbyaddr(name, namelen, LHNETADDRESSTYPE_INET6_FAMILY);
+ else if (i == 1)
+ hostentry = gethostbyaddr(name, namelen, LHNETADDRESSTYPE_INET4_FAMILY);
+ else
+ hostentry = gethostbyname(name);
+ if (hostentry)
+ {
+ if (hostentry->h_addrtype == LHNETADDRESSTYPE_INET6_FAMILY)
+ {
+ // great it worked
+ address->addresstype = LHNETADDRESSTYPE_INET6;
+ address->addressdata.inet6.family = hostentry->h_addrtype;
+ address->addressdata.inet6.port = htons(port);
+ memcpy(address->addressdata.inet6.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet6.address));
+#ifdef STANDALONETEST
+ printf("gethostbyname(\"%s\") returned ipv6 address [%x:%x:%x:%x:%x:%x:%x:%x]:%d\n", name, (int)address->addressdata.inet6.address[0], (int)address->addressdata.inet6.address[1], (int)address->addressdata.inet6.address[2], (int)address->addressdata.inet6.address[3], (int)address->addressdata.inet6.address[4], (int)address->addressdata.inet6.address[5], (int)address->addressdata.inet6.address[6], (int)address->addressdata.inet6.address[7], (int)ntohs(address->addressdata.inet6.port));
+#endif
+ return 1;
+ }
+ else if (hostentry->h_addrtype == LHNETADDRESSTYPE_INET4_FAMILY)
+ {
+ // great it worked
+ address->addresstype = LHNETADDRESSTYPE_INET4;
+ address->addressdata.inet4.family = hostentry->h_addrtype;
+ address->addressdata.inet4.port = htons(port);
+ memcpy(address->addressdata.inet4.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet4.address));
+#ifdef STANDALONETEST
+ printf("gethostbyname(\"%s\") returned ipv4 address %d.%d.%d.%d:%d\n", name, (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3], (int)ntohs(address->addressdata.inet4.port));
+#endif
+ return 1;
+ }
+ }
+ }
+ // failed, try to parse as an ipv4 address as a fallback (is this needed?)
+#ifdef STANDALONETEST
+ printf("gethostbyname and gethostbyaddr failed on address \"%s\"\n", name);
+#endif
+ for (i = 0, number = 0;i < 4;string++)
+ {
+ if (*string >= '0' && *string <= '9')
+ number = number * 10 + (*string - '0');
+ else if (number < 256 && (*string == '.' || *string == ':'))
+ {
+ address->addressdata.inet4.address[i++] = number;
+ number = 0;
+ }
+ else
+ break;
+ if (*string == 0 || *string == ':')
+ break;
+ }
+ if (i == 4)
+ {
+ // parsed a valid ipv4 address
+ address->addresstype = LHNETADDRESSTYPE_INET4;
+ address->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY;
+ address->addressdata.inet4.port = htons(port);
+#ifdef STANDALONETEST
+ printf("manual parsing of ipv4 dotted decimal address \"%s\" successful: %d.%d.%d.%d:%d\n", string, (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3], (int)ntohs(address->addressdata.inet4.port));
+#endif
+ return 1;
+ }
+ return 0;
+}
+
+int LHNETADDRESS_ToString(const lhnetaddress_t *address, char *string, int stringbuffersize, int includeport)
+{
+ *string = 0;
+ switch(address->addresstype)
+ {
+ default:
+ break;
+ case LHNETADDRESSTYPE_LOOP:
+ if (includeport)
+ {
+ if (stringbuffersize >= 12)
+ {
+ sprintf(string, "local:%d", (int)address->addressdata.loop.port);
+ return 1;
+ }
+ }
+ else
+ {
+ if (stringbuffersize >= 6)
+ {
+ strcpy(string, "local");
+ return 1;
+ }
+ }
+ break;
+ case LHNETADDRESSTYPE_INET4:
+ if (includeport)
+ {
+ if (stringbuffersize >= 22)
+ {
+ sprintf(string, "%d.%d.%d.%d:%d", (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3], (int)ntohs(address->addressdata.inet4.port));
+ return 1;
+ }
+ }
+ else
+ {
+ if (stringbuffersize >= 16)
+ {
+ sprintf(string, "%d.%d.%d.%d", (int)address->addressdata.inet4.address[0], (int)address->addressdata.inet4.address[1], (int)address->addressdata.inet4.address[2], (int)address->addressdata.inet4.address[3]);
+ return 1;
+ }
+ }
+ break;
+ case LHNETADDRESSTYPE_INET6:
+ if (includeport)
+ {
+ if (stringbuffersize >= 88)
+ {
+ sprintf(string, "[%x:%x:%x:%x:%x:%x:%x:%x]:%d", (int)address->addressdata.inet6.address[0], (int)address->addressdata.inet6.address[1], (int)address->addressdata.inet6.address[2], (int)address->addressdata.inet6.address[3], (int)address->addressdata.inet6.address[4], (int)address->addressdata.inet6.address[5], (int)address->addressdata.inet6.address[6], (int)address->addressdata.inet6.address[7], (int)ntohs(address->addressdata.inet6.port));
+ return 1;
+ }
+ }
+ else
+ {
+ if (stringbuffersize >= 80)
+ {
+ sprintf(string, "%x:%x:%x:%x:%x:%x:%x:%x", (int)address->addressdata.inet6.address[0], (int)address->addressdata.inet6.address[1], (int)address->addressdata.inet6.address[2], (int)address->addressdata.inet6.address[3], (int)address->addressdata.inet6.address[4], (int)address->addressdata.inet6.address[5], (int)address->addressdata.inet6.address[6], (int)address->addressdata.inet6.address[7]);
+ return 1;
+ }
+ }
+ break;
+ }
+ return 0;
+}
+
+int LHNETADDRESS_GetAddressType(const lhnetaddress_t *address)
+{
+ return address->addresstype;
+}
+
+int LHNETADDRESS_GetPort(const lhnetaddress_t *address)
+{
+ switch(address->addresstype)
+ {
+ case LHNETADDRESSTYPE_LOOP:
+ return address->addressdata.loop.port;
+ case LHNETADDRESSTYPE_INET4:
+ return ntohs(address->addressdata.inet4.port);
+ case LHNETADDRESSTYPE_INET6:
+ return ntohs(address->addressdata.inet6.port);
+ default:
+ return -1;
+ }
+}
+
+int LHNETADDRESS_SetPort(lhnetaddress_t *address, int port)
+{
+ switch(address->addresstype)
+ {
+ case LHNETADDRESSTYPE_LOOP:
+ address->addressdata.loop.port = port;
+ return 1;
+ case LHNETADDRESSTYPE_INET4:
+ address->addressdata.inet4.port = htons(port);
+ return 1;
+ case LHNETADDRESSTYPE_INET6:
+ address->addressdata.inet6.port = htons(port);
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+int LHNETADDRESS_Compare(const lhnetaddress_t *address1, const lhnetaddress_t *address2)
+{
+ if (address1->addresstype != address2->addresstype)
+ return 1;
+ switch(address1->addresstype)
+ {
+ case LHNETADDRESSTYPE_LOOP:
+ if (address1->addressdata.loop.port != address2->addressdata.loop.port)
+ return -1;
+ return 0;
+ case LHNETADDRESSTYPE_INET4:
+ if (address1->addressdata.inet4.family != address2->addressdata.inet4.family)
+ return 1;
+ if (memcmp(address1->addressdata.inet4.address, address2->addressdata.inet4.address, sizeof(address1->addressdata.inet4.address)))
+ return 1;
+ if (address1->addressdata.inet4.port != address2->addressdata.inet4.port)
+ return -1;
+ return 0;
+ case LHNETADDRESSTYPE_INET6:
+ if (address1->addressdata.inet6.family != address2->addressdata.inet6.family)
+ return 1;
+ if (memcmp(address1->addressdata.inet6.address, address2->addressdata.inet6.address, sizeof(address1->addressdata.inet6.address)))
+ return 1;
+ if (address1->addressdata.inet6.port != address2->addressdata.inet6.port)
+ return -1;
+ return 0;
+ default:
+ return 1;
+ }
+}
+
+typedef struct lhnetpacket_s
+{
+ void *data;
+ int length;
+ int sourceport;
+ int destinationport;
+ time_t timeout;
+ struct lhnetpacket_s *next, *prev;
+}
+lhnetpacket_t;
+
+static int lhnet_active;
+static lhnetsocket_t lhnet_socketlist;
+static lhnetpacket_t lhnet_packetlist;
+#ifdef WIN32
+static int lhnet_didWSAStartup = 0;
+static WSADATA lhnet_winsockdata;
+#endif
+
+void LHNET_Init(void)
+{
+ if (lhnet_active)
+ return;
+ lhnet_socketlist.next = lhnet_socketlist.prev = &lhnet_socketlist;
+ lhnet_packetlist.next = lhnet_packetlist.prev = &lhnet_packetlist;
+ lhnet_active = 1;
+}
+
+void LHNET_Shutdown(void)
+{
+ lhnetpacket_t *p;
+ if (!lhnet_active)
+ return;
+ while (lhnet_socketlist.next != &lhnet_socketlist)
+ LHNET_CloseSocket(lhnet_socketlist.next);
+ while (lhnet_packetlist.next != &lhnet_packetlist)
+ {
+ p = lhnet_packetlist.next;
+ p->prev->next = p->next;
+ p->next->prev = p->prev;
+ Z_Free(p);
+ }
+ lhnet_active = 0;
+}
+
+lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address)
+{
+ lhnetsocket_t *lhnetsocket, *s;
+ lhnetsocket = Z_Malloc(sizeof(*lhnetsocket));
+ if (lhnetsocket)
+ {
+ memset(lhnetsocket, 0, sizeof(*lhnetsocket));
+ lhnetsocket->address = *address;
+ switch(lhnetsocket->address.addresstype)
+ {
+ case LHNETADDRESSTYPE_LOOP:
+ if (lhnetsocket->address.addressdata.loop.port == 0)
+ {
+ // allocate a port dynamically
+ // this search will always terminate because there is never
+ // an allocated socket with port 0, so if the number wraps it
+ // will find the port is unused, and then refuse to use port
+ // 0, causing an intentional failure condition
+ lhnetsocket->address.addressdata.loop.port = 1024;
+ for (;;)
+ {
+ for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
+ if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.addressdata.loop.port == lhnetsocket->address.addressdata.loop.port)
+ break;
+ if (s == &lhnet_socketlist)
+ break;
+ lhnetsocket->address.addressdata.loop.port++;
+ }
+ }
+ // check if the port is available
+ for (s = lhnet_socketlist.next;s != &lhnet_socketlist;s = s->next)
+ if (s->address.addresstype == lhnetsocket->address.addresstype && s->address.addressdata.loop.port == lhnetsocket->address.addressdata.loop.port)
+ break;
+ if (s == &lhnet_socketlist && lhnetsocket->address.addressdata.loop.port != 0)
+ {
+ lhnetsocket->next = &lhnet_socketlist;
+ lhnetsocket->prev = lhnetsocket->next->prev;
+ lhnetsocket->next->prev = lhnetsocket;
+ lhnetsocket->prev->next = lhnetsocket;
+ return lhnetsocket;
+ }
+ break;
+ case LHNETADDRESSTYPE_INET4:
+ case LHNETADDRESSTYPE_INET6:
+#ifdef WIN32
+ if (!lhnet_didWSAStartup && !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata))
+ {
+ lhnet_didWSAStartup = 1;
+#else
+ {
+#endif
+ if (address->addresstype == LHNETADDRESSTYPE_INET6)
+ lhnetsocket->inetsocket = socket(LHNETADDRESSTYPE_INET6_FAMILY, SOCK_DGRAM, IPPROTO_UDP);
+ else
+ lhnetsocket->inetsocket = socket(LHNETADDRESSTYPE_INET4_FAMILY, SOCK_DGRAM, IPPROTO_UDP);
+ if (lhnetsocket->inetsocket != -1)
+ {
+#ifdef WIN32
+ u_long _true = 1;
+ if (ioctlsocket(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
+#else
+ char _true = 1;
+ if (ioctl(lhnetsocket->inetsocket, FIONBIO, &_true) != -1)
+#endif
+ {
+ if (bind(lhnetsocket->inetsocket, (void *)&lhnetsocket->address.addressdata, address->addresstype == LHNETADDRESSTYPE_INET6 ? sizeof(lhnetsocket->address.addressdata.inet6) : sizeof(lhnetsocket->address.addressdata.inet4)) != -1)
+ {
+ lhnetsocket->next = &lhnet_socketlist;
+ lhnetsocket->prev = lhnetsocket->next->prev;
+ lhnetsocket->next->prev = lhnetsocket;
+ lhnetsocket->prev->next = lhnetsocket;
+ return lhnetsocket;
+ }
+ }
+#ifdef WIN32
+ closesocket(lhnetsocket->inetsocket);
+#else
+ close(lhnetsocket->inetsocket);
+#endif
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ Z_Free(lhnetsocket);
+ }
+ return NULL;
+}
+
+void LHNET_CloseSocket(lhnetsocket_t *lhnetsocket)
+{
+ if (lhnetsocket)
+ {
+ // unlink from socket list
+ if (lhnetsocket->next == NULL)
+ return; // invalid!
+ lhnetsocket->next->prev = lhnetsocket->prev;
+ lhnetsocket->prev->next = lhnetsocket->next;
+ lhnetsocket->next = NULL;
+ lhnetsocket->prev = NULL;
+
+ // no special close code for loopback, just inet
+ if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4 || lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
+ {
+#ifdef WIN32
+ closesocket(lhnetsocket->inetsocket);
+#else
+ close(lhnetsocket->inetsocket);
+#endif
+ }
+#ifdef WIN32
+ if (lhnet_socketlist.next == &lhnet_socketlist && lhnet_didWSAStartup)
+ {
+ lhnet_didWSAStartup = 0;
+ WSACleanup();
+ }
+#endif
+ Z_Free(lhnetsocket);
+ }
+}
+
+lhnetaddress_t *LHNET_AddressFromSocket(lhnetsocket_t *sock)
+{
+ return &sock->address;
+}
+
+int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *address)
+{
+ int value = 0;
+ if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
+ {
+ time_t currenttime;
+ lhnetpacket_t *p, *pnext;
+ // scan for any old packets to timeout while searching for a packet
+ // that is waiting to be delivered to this socket
+ currenttime = time(NULL);
+ for (p = lhnet_packetlist.next;p != &lhnet_packetlist;p = pnext)
+ {
+ pnext = p->next;
+ if (value == 0 && p->destinationport == lhnetsocket->address.addressdata.loop.port)
+ {
+ if (p->length <= maxcontentlength)
+ {
+ *address = lhnetsocket->address;
+ address->addressdata.loop.port = p->sourceport;
+ memcpy(content, p->data, p->length);
+ value = p->length;
+ }
+ else
+ value = -1;
+ // unlink and free
+ p->next->prev = p->prev;
+ p->prev->next = p->next;
+ Z_Free(p);
+ }
+ else if (p->timeout < currenttime)
+ {
+ // unlink and free
+ p->next->prev = p->prev;
+ p->prev->next = p->next;
+ Z_Free(p);
+ }
+ }
+ }
+ else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
+ {
+ int inetaddresslength;
+ address->addresstype = LHNETADDRESSTYPE_NONE;
+ inetaddresslength = sizeof(address->addressdata.inet4);
+ value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, (struct sockaddr *)&address->addressdata.inet4, &inetaddresslength);
+ if (value > 0)
+ {
+ address->addresstype = LHNETADDRESSTYPE_INET4;
+ return value;
+ }
+ else if (value == -1)
+ {
+#ifdef WIN32
+ int e = WSAGetLastError();
+ if (e == WSAEWOULDBLOCK || e == WSAECONNREFUSED)
+ return 0;
+#else
+ if (errno == EWOULDBLOCK || errno == ECONNREFUSED)
+ return 0;
+#endif
+ }
+ }
+ else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
+ {
+ int inetaddresslength;
+ address->addresstype = LHNETADDRESSTYPE_NONE;
+ inetaddresslength = sizeof(address->addressdata.inet6);
+ value = recvfrom(lhnetsocket->inetsocket, content, maxcontentlength, 0, (struct sockaddr *)&address->addressdata.inet6, &inetaddresslength);
+ if (value > 0)
+ {
+ address->addresstype = LHNETADDRESSTYPE_INET6;
+ return value;
+ }
+ else if (value == -1)
+ {
+#ifdef WIN32
+ int e = WSAGetLastError();
+ if (e == WSAEWOULDBLOCK || e == WSAECONNREFUSED)
+ return 0;
+#else
+ if (errno == EWOULDBLOCK || errno == ECONNREFUSED)
+ return 0;
+#endif
+ }
+ }
+ return value;
+}
+
+int LHNET_Write(lhnetsocket_t *lhnetsocket, const void *content, int contentlength, const lhnetaddress_t *address)
+{
+ int value = -1;
+ if (lhnetsocket->address.addresstype != address->addresstype)
+ return -1;
+ if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP)
+ {
+ lhnetpacket_t *p;
+ p = Z_Malloc(sizeof(*p) + contentlength);
+ p->data = (void *)(p + 1);
+ memcpy(p->data, content, contentlength);
+ p->length = contentlength;
+ p->sourceport = lhnetsocket->address.addressdata.loop.port;
+ p->destinationport = address->addressdata.loop.port;
+ p->timeout = time(NULL) + 10;
+ p->next = &lhnet_packetlist;
+ p->prev = p->next->prev;
+ p->next->prev = p;
+ p->prev->next = p;
+ value = contentlength;
+ }
+ else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4)
+ {
+ value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addressdata.inet4, sizeof(address->addressdata.inet4));
+ if (value == -1)
+ {
+#ifdef WIN32
+ int e = WSAGetLastError();
+ if (e == WSAEWOULDBLOCK)
+ return 0;
+#else
+ if (errno == EWOULDBLOCK)
+ return 0;
+#endif
+ }
+ }
+ else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6)
+ {
+ value = sendto(lhnetsocket->inetsocket, content, contentlength, 0, (struct sockaddr *)&address->addressdata.inet6, sizeof(address->addressdata.inet6));
+ if (value == -1)
+ {
+#ifdef WIN32
+ int e = WSAGetLastError();
+ if (e == WSAEWOULDBLOCK)
+ return 0;
+#else
+ if (errno == EWOULDBLOCK)
+ return 0;
+#endif
+ }
+ }
+ return value;
+}
+
+#ifdef STANDALONETEST
+int main(int argc, char **argv)
+{
+ lhnetsocket_t *sock[16], *sendsock;
+ int i;
+ int numsockets;
+ int count;
+ int length;
+ int port;
+ time_t oldtime;
+ time_t newtime;
+ char *sendmessage;
+ int sendmessagelength;
+ lhnetaddress_t destaddress;
+ lhnetaddress_t receiveaddress;
+ lhnetaddress_t sockaddress[16];
+ char buffer[1536], addressstring[128], addressstring2[128];
+ if ((argc == 2 || argc == 5) && (port = atoi(argv[1])) >= 1 && port < 65535)
+ {
+ printf("calling LHNET_Init()\n");
+ LHNET_Init();
+
+ numsockets = 0;
+ LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_LOOP, port);
+ LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET4, port);
+ LHNETADDRESS_FromPort(&sockaddress[numsockets++], LHNETADDRESSTYPE_INET6, port+1);
+
+ sendsock = NULL;
+ sendmessage = NULL;
+ sendmessagelength = 0;
+
+ for (i = 0;i < numsockets;i++)
+ {
+ LHNETADDRESS_ToString(&sockaddress[i], addressstring, sizeof(addressstring), 1);
+ printf("calling LHNET_OpenSocket_Connectionless(<%s>)\n", addressstring);
+ if ((sock[i] = LHNET_OpenSocket_Connectionless(&sockaddress[i])))
+ {
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
+ printf("opened socket successfully (address \"%s\")\n", addressstring2);
+ }
+ else
+ {
+ printf("failed to open socket\n");
+ if (i == 0)
+ {
+ LHNET_Shutdown();
+ return -1;
+ }
+ }
+ }
+ count = 0;
+ if (argc == 5)
+ {
+ count = atoi(argv[2]);
+ if (LHNETADDRESS_FromString(&destaddress, argv[3], -1))
+ {
+ sendmessage = argv[4];
+ sendmessagelength = strlen(sendmessage);
+ sendsock = NULL;
+ for (i = 0;i < numsockets;i++)
+ if (sock[i] && LHNETADDRESS_GetAddressType(&destaddress) == LHNETADDRESS_GetAddressType(&sockaddress[i]))
+ sendsock = sock[i];
+ if (sendsock == NULL)
+ {
+ printf("Could not find an open socket matching the addresstype (%i) of destination address, switching to listen only mode\n", LHNETADDRESS_GetAddressType(&destaddress));
+ argc = 2;
+ }
+ }
+ else
+ {
+ printf("LHNETADDRESS_FromString did not like the address \"%s\", switching to listen only mode\n", argv[3]);
+ argc = 2;
+ }
+ }
+ printf("started, now listening for \"exit\" on the opened sockets\n");
+ oldtime = time(NULL);
+ for(;;)
+ {
+#ifdef WIN32
+ Sleep(1);
+#else
+ usleep(1);
+#endif
+ for (i = 0;i < numsockets;i++)
+ {
+ if (sock[i])
+ {
+ length = LHNET_Read(sock[i], buffer, sizeof(buffer), &receiveaddress);
+ if (length < 0)
+ printf("localsock read error: length < 0");
+ else if (length > 0 && length < (int)sizeof(buffer))
+ {
+ buffer[length] = 0;
+ LHNETADDRESS_ToString(&receiveaddress, addressstring, sizeof(addressstring), 1);
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
+ printf("received message \"%s\" from \"%s\" on socket \"%s\"\n", buffer, addressstring, addressstring2);
+ if (!strcmp(buffer, "exit"))
+ break;
+ }
+ }
+ }
+ if (i < numsockets)
+ break;
+ if (argc == 5 && count > 0)
+ {
+ newtime = time(NULL);
+ if (newtime != oldtime)
+ {
+ LHNETADDRESS_ToString(&destaddress, addressstring, sizeof(addressstring), 1);
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(sendsock), addressstring2, sizeof(addressstring2), 1);
+ printf("calling LHNET_Write(<%s>, \"%s\", %i, <%s>)\n", addressstring2, sendmessage, sendmessagelength, addressstring);
+ length = LHNET_Write(sendsock, sendmessage, sendmessagelength, &destaddress);
+ if (length == sendmessagelength)
+ printf("sent successfully\n");
+ else
+ printf("LH_Write failed, returned %i (length of message was %i)\n", length, strlen(argv[4]));
+ oldtime = newtime;
+ count--;
+ if (count <= 0)
+ printf("Done sending, still listening for \"exit\"\n");
+ }
+ }
+ }
+ for (i = 0;i < numsockets;i++)
+ {
+ if (sock[i])
+ {
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(sock[i]), addressstring2, sizeof(addressstring2), 1);
+ printf("calling LHNET_CloseSocket(<%s>)\n", addressstring2);
+ LHNET_CloseSocket(sock[i]);
+ }
+ }
+ printf("calling LHNET_Shutdown()\n");
+ LHNET_Shutdown();
+ return 0;
+ }
+ printf("Testing code for lhnet.c\nusage: lhnettest <localportnumber> [<sendnumberoftimes> <sendaddress:port> <sendmessage>]\n");
+ return -1;
+}
+#endif
+
--- /dev/null
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+Copyright (C) 2002 Mathieu Olivier
+Copyright (C) 2003 Forest Hale
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+
+#include "quakedef.h"
+#include "lhnet.h"
+
+#define MASTER_PORT 27950
+
+cvar_t sv_public = {0, "sv_public", "0"};
+static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "180"};
+
+static cvar_t sv_masters [] =
+{
+ {CVAR_SAVE, "sv_master1", ""},
+ {CVAR_SAVE, "sv_master2", ""},
+ {CVAR_SAVE, "sv_master3", ""},
+ {CVAR_SAVE, "sv_master4", ""},
+ {0, "sv_masterextra1", "198.88.152.4"},
+ {0, "sv_masterextra2", "68.102.242.12"},
+ {0, NULL, NULL}
+};
+
+static double nextheartbeattime = 0;
+
+sizebuf_t net_message;
+
+cvar_t net_messagetimeout = {0, "net_messagetimeout","300"};
+cvar_t hostname = {CVAR_SAVE, "hostname", "UNNAMED"};
+cvar_t developer_networking = {0, "developer_networking", "0"};
+
+/* statistic counters */
+static int packetsSent = 0;
+static int packetsReSent = 0;
+static int packetsReceived = 0;
+static int receivedDuplicateCount = 0;
+static int droppedDatagrams = 0;
+
+static int unreliableMessagesSent = 0;
+static int unreliableMessagesReceived = 0;
+static int reliableMessagesSent = 0;
+static int reliableMessagesReceived = 0;
+
+int hostCacheCount = 0;
+hostcache_t hostcache[HOSTCACHESIZE];
+
+static qbyte sendbuffer[NET_MAXMESSAGE];
+static qbyte readbuffer[NET_MAXMESSAGE];
+
+int cl_numsockets;
+lhnetsocket_t *cl_sockets[16];
+int sv_numsockets;
+lhnetsocket_t *sv_sockets[16];
+
+netconn_t *netconn_list = NULL;
+mempool_t *netconn_mempool = NULL;
+
+cvar_t cl_netport = {0, "cl_port", "0"};
+cvar_t cl_netaddress = {0, "cl_netaddress", "0.0.0.0"};
+cvar_t cl_netaddress_ipv6 = {0, "cl_netaddress_ipv6", "[0:0:0:0:0:0:0:0]:0"};
+
+cvar_t sv_netport = {0, "port", "26000"};
+cvar_t sv_netaddress = {0, "sv_netaddress", "0.0.0.0"};
+cvar_t sv_netaddress_ipv6 = {0, "sv_netaddress_ipv6", "[0:0:0:0:0:0:0:0]:26000"};
+
+int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress)
+{
+ int length = LHNET_Read(mysocket, data, maxlength, peeraddress);
+ if (developer_networking.integer && length != 0)
+ {
+ char addressstring[128], addressstring2[128];
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
+ if (length > 0)
+ {
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i from %s:\n", mysocket, addressstring, data, maxlength, peeraddress, length, addressstring2);
+ Com_HexDumpToConsole(data, length);
+ }
+ else
+ Con_Printf("LHNET_Read(%p (%s), %p, %i, %p) = %i\n", mysocket, addressstring, data, maxlength, peeraddress, length);
+ }
+ return length;
+}
+
+int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const lhnetaddress_t *peeraddress)
+{
+ int ret = LHNET_Write(mysocket, data, length, peeraddress);
+ if (developer_networking.integer && ret != 0)
+ {
+ char addressstring[128], addressstring2[128];
+ LHNETADDRESS_ToString(LHNET_AddressFromSocket(mysocket), addressstring, sizeof(addressstring), true);
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("LHNET_Write(%p (%s), %p, %i, %p (%s)) = %i%s\n", mysocket, addressstring, data, length, peeraddress, addressstring2, length, ret == length ? "" : " (ERROR)");
+ Com_HexDumpToConsole(data, length);
+ }
+ return ret;
+}
+
+int NetConn_SendReliableMessage(netconn_t *conn, sizebuf_t *data)
+{
+ unsigned int packetLen;
+ unsigned int dataLen;
+ unsigned int eom;
+ unsigned int *header;
+
+//#ifdef DEBUG
+ if (data->cursize == 0)
+ Sys_Error("Datagram_SendMessage: zero length message\n");
+
+ if (data->cursize > NET_MAXMESSAGE)
+ Sys_Error("Datagram_SendMessage: message too big %u\n", data->cursize);
+
+ if (conn->canSend == false)
+ Sys_Error("SendMessage: called with canSend == false\n");
+//#endif
+
+ memcpy(conn->sendMessage, data->data, data->cursize);
+ conn->sendMessageLength = data->cursize;
+
+ if (conn->sendMessageLength <= MAX_DATAGRAM)
+ {
+ dataLen = conn->sendMessageLength;
+ eom = NETFLAG_EOM;
+ }
+ else
+ {
+ dataLen = MAX_DATAGRAM;
+ eom = 0;
+ }
+
+ packetLen = NET_HEADERSIZE + dataLen;
+
+ header = (void *)sendbuffer;
+ header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
+ header[1] = BigLong(conn->sendSequence);
+ memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
+
+ conn->sendSequence++;
+ conn->canSend = false;
+
+ if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+ return -1;
+
+ conn->lastSendTime = realtime;
+ packetsSent++;
+ reliableMessagesSent++;
+ return 1;
+}
+
+static void NetConn_SendMessageNext(netconn_t *conn)
+{
+ unsigned int packetLen;
+ unsigned int dataLen;
+ unsigned int eom;
+ unsigned int *header;
+
+ if (conn->sendMessageLength && !conn->canSend && conn->sendNext)
+ {
+ if (conn->sendMessageLength <= MAX_DATAGRAM)
+ {
+ dataLen = conn->sendMessageLength;
+ eom = NETFLAG_EOM;
+ }
+ else
+ {
+ dataLen = MAX_DATAGRAM;
+ eom = 0;
+ }
+
+ packetLen = NET_HEADERSIZE + dataLen;
+
+ header = (void *)sendbuffer;
+ header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
+ header[1] = BigLong(conn->sendSequence);
+ memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
+
+ conn->sendSequence++;
+ conn->sendNext = false;
+
+ if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+ return;
+
+ conn->lastSendTime = realtime;
+ packetsSent++;
+ }
+}
+
+static void NetConn_ReSendMessage(netconn_t *conn)
+{
+ unsigned int packetLen;
+ unsigned int dataLen;
+ unsigned int eom;
+ unsigned int *header;
+
+ if (conn->sendMessageLength && !conn->canSend && (realtime - conn->lastSendTime) > 1.0)
+ {
+ if (conn->sendMessageLength <= MAX_DATAGRAM)
+ {
+ dataLen = conn->sendMessageLength;
+ eom = NETFLAG_EOM;
+ }
+ else
+ {
+ dataLen = MAX_DATAGRAM;
+ eom = 0;
+ }
+
+ packetLen = NET_HEADERSIZE + dataLen;
+
+ header = (void *)sendbuffer;
+ header[0] = BigLong(packetLen | (NETFLAG_DATA | eom));
+ header[1] = BigLong(conn->sendSequence - 1);
+ memcpy(sendbuffer + 8, conn->sendMessage, dataLen);
+
+ conn->sendNext = false;
+
+ if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+ return;
+
+ conn->lastSendTime = realtime;
+ packetsReSent++;
+ }
+}
+
+qboolean NetConn_CanSendMessage(netconn_t *conn)
+{
+ return conn->canSend;
+}
+
+int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data)
+{
+ int packetLen;
+ int *header;
+
+#ifdef DEBUG
+ if (data->cursize == 0)
+ Sys_Error("Datagram_SendUnreliableMessage: zero length message\n");
+
+ if (data->cursize > MAX_DATAGRAM)
+ Sys_Error("Datagram_SendUnreliableMessage: message too big %u\n", data->cursize);
+#endif
+
+ packetLen = NET_HEADERSIZE + data->cursize;
+
+ header = (void *)sendbuffer;
+ header[0] = BigLong(packetLen | NETFLAG_UNRELIABLE);
+ header[1] = BigLong(conn->unreliableSendSequence);
+ memcpy(sendbuffer + 8, data->data, data->cursize);
+
+ conn->unreliableSendSequence++;
+
+ if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) != (int)packetLen)
+ return -1;
+
+ packetsSent++;
+ unreliableMessagesSent++;
+ return 1;
+}
+
+void NetConn_CloseClientPorts(void)
+{
+ for (;cl_numsockets > 0;cl_numsockets--)
+ if (cl_sockets[cl_numsockets - 1])
+ LHNET_CloseSocket(cl_sockets[cl_numsockets - 1]);
+}
+
+void NetConn_OpenClientPorts(void)
+{
+ int port;
+ lhnetaddress_t address;
+ NetConn_CloseClientPorts();
+ port = bound(0, cl_netport.integer, 65535);
+ if (cl_netport.integer != port)
+ Cvar_SetValueQuick(&cl_netport, port);
+ LHNETADDRESS_FromString(&address, "local", port);
+ cl_sockets[cl_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+ LHNETADDRESS_FromString(&address, cl_netaddress.string, port);
+ cl_sockets[cl_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+ LHNETADDRESS_FromString(&address, cl_netaddress_ipv6.string, port);
+ cl_sockets[cl_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+}
+
+void NetConn_CloseServerPorts(void)
+{
+ for (;sv_numsockets > 0;sv_numsockets--)
+ if (sv_sockets[sv_numsockets - 1])
+ LHNET_CloseSocket(sv_sockets[sv_numsockets - 1]);
+}
+
+void NetConn_OpenServerPorts(int opennetports)
+{
+ int port;
+ lhnetaddress_t address;
+ NetConn_CloseServerPorts();
+ port = bound(0, sv_netport.integer, 65535);
+ if (port == 0)
+ port = 26000;
+ if (sv_netport.integer != port)
+ Cvar_SetValueQuick(&sv_netport, port);
+ LHNETADDRESS_FromString(&address, "local", port);
+ sv_sockets[sv_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+ if (opennetports)
+ {
+ LHNETADDRESS_FromString(&address, sv_netaddress.string, port);
+ sv_sockets[sv_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+ LHNETADDRESS_FromString(&address, sv_netaddress_ipv6.string, port);
+ sv_sockets[sv_numsockets++] = LHNET_OpenSocket_Connectionless(&address);
+ }
+}
+
+lhnetsocket_t *NetConn_ChooseClientSocketForAddress(lhnetaddress_t *address)
+{
+ int i, a = LHNETADDRESS_GetAddressType(address);
+ for (i = 0;i < cl_numsockets;i++)
+ if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])) == a)
+ return cl_sockets[i];
+ return NULL;
+}
+
+lhnetsocket_t *NetConn_ChooseServerSocketForAddress(lhnetaddress_t *address)
+{
+ int i, a = LHNETADDRESS_GetAddressType(address);
+ for (i = 0;i < sv_numsockets;i++)
+ if (LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(sv_sockets[i])) == a)
+ return sv_sockets[i];
+ return NULL;
+}
+
+netconn_t *NetConn_Open(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress)
+{
+ netconn_t *conn;
+ conn = Mem_Alloc(netconn_mempool, sizeof(*conn));
+ conn->mysocket = mysocket;
+ conn->peeraddress = *peeraddress;
+ conn->canSend = true;
+ conn->connecttime = realtime;
+ conn->lastMessageTime = realtime;
+ LHNETADDRESS_ToString(&conn->peeraddress, conn->address, sizeof(conn->address), true);
+ conn->next = netconn_list;
+ netconn_list = conn;
+ return conn;
+}
+
+void NetConn_Close(netconn_t *conn)
+{
+ netconn_t *c;
+ // remove connection from list
+ if (conn == netconn_list)
+ netconn_list = conn->next;
+ else
+ {
+ for (c = netconn_list;c;c = c->next)
+ {
+ if (c->next == conn)
+ {
+ c->next = conn->next;
+ break;
+ }
+ }
+ // not found in list, we'll avoid crashing here...
+ if (!c)
+ return;
+ }
+ // free connection
+ Mem_Free(conn);
+}
+
+static int clientport = -1;
+static int clientport2 = -1;
+static int hostport = -1;
+static void NetConn_UpdateServerStuff(void)
+{
+ if (clientport2 != cl_netport.integer)
+ {
+ clientport2 = cl_netport.integer;
+ if (cls.state == ca_connected)
+ Con_Printf("Changing \"cl_port\" will not take effect until you reconnect.\n");
+ }
+ if (cls.state != ca_dedicated)
+ {
+ if (cls.state == ca_disconnected && clientport != cl_netport.integer)
+ {
+ clientport = cl_netport.integer;
+ NetConn_CloseClientPorts();
+ }
+ if (cl_numsockets == 0)
+ NetConn_OpenClientPorts();
+ }
+
+ if (hostport != sv_netport.integer)
+ {
+ hostport = sv_netport.integer;
+ if (sv.active)
+ Con_Printf("Changing \"port\" will not take effect until \"map\" command is executed.\n");
+ }
+}
+
+int NetConn_ReceivedMessage(netconn_t *conn, qbyte *data, int length)
+{
+ unsigned int count;
+ unsigned int flags;
+ unsigned int sequence;
+
+ if (length < 8)
+ return 0;
+
+ length = BigLong(((int *)data)[0]);
+ flags = length & ~NETFLAG_LENGTH_MASK;
+ length &= NETFLAG_LENGTH_MASK;
+ // control packets were already handled
+ if (!(flags & NETFLAG_CTL))
+ {
+ sequence = BigLong(((int *)data)[1]);
+ packetsReceived++;
+ data += 8;
+ length -= 8;
+ if (flags & NETFLAG_UNRELIABLE)
+ {
+ if (sequence >= conn->unreliableReceiveSequence)
+ {
+ if (sequence > conn->unreliableReceiveSequence)
+ {
+ count = sequence - conn->unreliableReceiveSequence;
+ droppedDatagrams += count;
+ Con_DPrintf("Dropped %u datagram(s)\n", count);
+ }
+ conn->unreliableReceiveSequence = sequence + 1;
+ unreliableMessagesReceived++;
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, data, length);
+ MSG_BeginReading();
+ return 2;
+ }
+ else
+ Con_DPrintf("Got a stale datagram\n");
+ return 1;
+ }
+ else if (flags & NETFLAG_ACK)
+ {
+ if (sequence == (conn->sendSequence - 1))
+ {
+ if (sequence == conn->ackSequence)
+ {
+ conn->ackSequence++;
+ if (conn->ackSequence != conn->sendSequence)
+ Con_DPrintf("ack sequencing error\n");
+ conn->sendMessageLength -= MAX_DATAGRAM;
+ if (conn->sendMessageLength > 0)
+ {
+ memcpy(conn->sendMessage, conn->sendMessage+MAX_DATAGRAM, conn->sendMessageLength);
+ conn->sendNext = true;
+ NetConn_SendMessageNext(conn);
+ }
+ else
+ {
+ conn->sendMessageLength = 0;
+ conn->canSend = true;
+ }
+ }
+ else
+ Con_DPrintf("Duplicate ACK received\n");
+ }
+ else
+ Con_DPrintf("Stale ACK received\n");
+ return 1;
+ }
+ else if (flags & NETFLAG_DATA)
+ {
+ unsigned int temppacket[2];
+ temppacket[0] = BigLong(8 | NETFLAG_ACK);
+ temppacket[1] = BigLong(sequence);
+ NetConn_Write(conn->mysocket, (qbyte *)temppacket, 8, &conn->peeraddress);
+ if (sequence == conn->receiveSequence)
+ {
+ conn->receiveSequence++;
+ memcpy(conn->receiveMessage + conn->receiveMessageLength, data, length);
+ conn->receiveMessageLength += length;
+ if (flags & NETFLAG_EOM)
+ {
+ reliableMessagesReceived++;
+ SZ_Clear(&net_message);
+ SZ_Write(&net_message, conn->receiveMessage, conn->receiveMessageLength);
+ conn->receiveMessageLength = 0;
+ MSG_BeginReading();
+ return 2;
+ }
+ }
+ else
+ receivedDuplicateCount++;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static struct
+{
+ double senttime;
+ lhnetaddress_t peeraddress;
+}
+pingcache[HOSTCACHESIZE];
+
+int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
+{
+ int ret, c, control;
+ lhnetaddress_t svaddress;
+ const char *s;
+ char *string, addressstring2[128], cname[128], ipstring[32];
+
+ if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
+ {
+ data += 4;
+ length -= 4;
+ string = (char *)data;
+ if (developer.integer)
+ {
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("NetConn_ClientParsePacket: %s sent us a command:\n", addressstring2);
+ Com_HexDumpToConsole(data, length);
+ }
+ if (length >= 13 && !memcmp(string, "infoResponse\x0A", 13))
+ {
+ int i, j, c, n, users, maxusers;
+ char game[32], mod[32], map[32], name[128];
+ double pingtime;
+ hostcache_t temp;
+ string += 13;
+ // hostcache only uses text addresses
+ LHNETADDRESS_ToString(peeraddress, cname, sizeof(cname), true);
+ // search the cache for this server
+ for (n = 0; n < hostCacheCount; n++)
+ if (!strcmp(cname, hostcache[n].cname))
+ break;
+ // add it or update it
+ if (n == hostCacheCount)
+ {
+ // if cache is full replace highest ping server (the list is
+ // kept sorted so this is always the last, and if this server
+ // is good it will be sorted into an early part of the list)
+ if (hostCacheCount >= HOSTCACHESIZE)
+ n = hostCacheCount - 1;
+ else
+ hostCacheCount++;
+ }
+ c = -1;
+ if ((s = SearchInfostring(string, "gamename" )) != NULL) strncpy(game, s, sizeof(game) - 1);
+ if ((s = SearchInfostring(string, "modname" )) != NULL) strncpy(mod , s, sizeof(mod ) - 1);
+ if ((s = SearchInfostring(string, "mapname" )) != NULL) strncpy(map , s, sizeof(map ) - 1);
+ if ((s = SearchInfostring(string, "hostname" )) != NULL) strncpy(name, s, sizeof(name) - 1);
+ if ((s = SearchInfostring(string, "protocol" )) != NULL) c = atoi(s);
+ if ((s = SearchInfostring(string, "clients" )) != NULL) users = atoi(s);
+ if ((s = SearchInfostring(string, "sv_maxclients")) != NULL) maxusers = atoi(s);
+ pingtime = 9999;
+ for (i = 0;i < HOSTCACHESIZE;i++)
+ if (!LHNETADDRESS_Compare(peeraddress, &pingcache[i].peeraddress))
+ pingtime = (int)(realtime - pingcache[i].senttime);
+ pingtime = bound(0, pingtime, 9999);
+ memset(&hostcache[n], 0, sizeof(hostcache[n]));
+ // store the data the engine cares about (address and ping)
+ strcpy(hostcache[n].cname, cname);
+ hostcache[n].ping = pingtime;
+ // build description strings for the things users care about
+ snprintf(hostcache[n].line1, sizeof(hostcache[n].line1), "%5d%c%3u/%3u %-65.65s", (int)pingtime, c != NET_PROTOCOL_VERSION ? '*' : ' ', users, maxusers, name);
+ snprintf(hostcache[n].line2, sizeof(hostcache[n].line2), "%-21.21s %-19.19s %-17.17s %-20.20s", cname, game, mod, map);
+ // if ping is especially high, display it as such
+ if (pingtime >= 300)
+ {
+ // orange numbers (lower block)
+ for (i = 0;i < 5;i++)
+ if (hostcache[n].line1[i] != ' ')
+ hostcache[n].line1[i] += 128;
+ }
+ else if (pingtime >= 200)
+ {
+ // yellow numbers (in upper block)
+ for (i = 0;i < 5;i++)
+ if (hostcache[n].line1[i] != ' ')
+ hostcache[n].line1[i] -= 30;
+ }
+ // if not in the slist menu we should print the server to console
+ if (m_state != m_slist)
+ Con_Printf("%s\n%s\n", hostcache[n].line1, hostcache[n].line2);
+ // and finally, re-sort the list
+ for (i = 0;i < hostCacheCount;i++)
+ {
+ for (j = i + 1;j < hostCacheCount;j++)
+ {
+ //if (strcmp(hostcache[j].name, hostcache[i].name) < 0)
+ if (hostcache[i].ping > hostcache[j].ping)
+ {
+ memcpy(&temp, &hostcache[j], sizeof(hostcache_t));
+ memcpy(&hostcache[j], &hostcache[i], sizeof(hostcache_t));
+ memcpy(&hostcache[i], &temp, sizeof(hostcache_t));
+ }
+ }
+ }
+ return true;
+ }
+ if (!strncmp(string, "getserversResponse\\", 19) && hostCacheCount < HOSTCACHESIZE)
+ {
+ int i, best;
+ double besttime;
+ // Extract the IP addresses
+ data += 18;
+ length -= 18;
+ while (length >= 7 && data[0] == '\\' && (data[1] != 0xFF || data[2] != 0xFF || data[3] != 0xFF || data[4] != 0xFF) && data[5] * 256 + data[6] != 0)
+ {
+ sprintf(ipstring, "%u.%u.%u.%u:%u", data[1], data[2], data[3], data[4], (data[5] << 8) | data[6]);
+ if (developer.integer)
+ Con_Printf("Requesting info from server %s\n", ipstring);
+ LHNETADDRESS_FromString(&svaddress, ipstring, 0);
+ NetConn_Write(mysocket, "\377\377\377\377getinfo", 11, &svaddress);
+ // replace oldest or matching entry in ping cache
+ // we scan this later when getting a reply to see how long it took
+ besttime = realtime;
+ best = 0;
+ for (i = 0;i < HOSTCACHESIZE;i++)
+ {
+ if (!LHNETADDRESS_Compare(&svaddress, &pingcache[i].peeraddress))
+ {
+ best = i;
+ break;
+ }
+ if (besttime > pingcache[i].senttime)
+ {
+ besttime = pingcache[i].senttime;
+ best = i;
+ // if ping cache isn't full yet we can skip out early
+ if (!besttime)
+ break;
+ }
+ }
+ pingcache[best].peeraddress = svaddress;
+ pingcache[best].senttime = realtime;
+ // move on to next address in packet
+ data += 7;
+ length -= 7;
+ }
+ return true;
+ }
+ /*
+ if (!strncmp(string, "ping", 4))
+ {
+ if (developer.integer)
+ Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
+ NetConn_Write(mysocket, "\377\377\377\377ack", 7, peeraddress);
+ return true;
+ }
+ if (!strncmp(string, "ack", 3))
+ return true;
+ */
+ // we may not have liked the packet, but it was a command packet, so
+ // we're done processing this packet now
+ return true;
+ }
+ if (length >= 5 && (control = BigLong(*((int *)data))) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
+ {
+ c = data[4];
+ data += 5;
+ length -= 5;
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ switch (c)
+ {
+ case CCREP_ACCEPT:
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_ACCEPT from %s.\n", addressstring2);
+ if (cls.connect_trying)
+ {
+ Con_Printf("Connection accepted to %s\n", addressstring2);
+ key_dest = key_game;
+ m_state = m_none;
+ cls.netcon = NetConn_Open(mysocket, peeraddress);
+ cls.connect_trying = false;
+ cls.demonum = -1; // not in the demo loop now
+ cls.state = ca_connected;
+ cls.signon = 0; // need all the signon messages before playing
+ CL_ClearState();
+ Host_Reconnect_f();
+ }
+ break;
+ case CCREP_REJECT:
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_REJECT from %s.\n", addressstring2);
+ Con_Printf("%s\n", data);
+ strncpy(m_return_reason, data, sizeof(m_return_reason) - 1);
+ break;
+#if 0
+ case CCREP_SERVER_INFO:
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_SERVER_INFO from %s.\n", addressstring2);
+ if (cls.state != ca_dedicated)
+ {
+ // LordHavoc: because the UDP driver reports 0.0.0.0:26000 as the address
+ // string we just ignore it and keep the real address
+ MSG_ReadString();
+ // hostcache only uses text addresses
+ cname = UDP_AddrToString(readaddr);
+ // search the cache for this server
+ for (n = 0; n < hostCacheCount; n++)
+ if (!strcmp(cname, hostcache[n].cname))
+ break;
+ // add it
+ if (n == hostCacheCount && hostCacheCount < HOSTCACHESIZE)
+ {
+ hostCacheCount++;
+ memset(&hostcache[n], 0, sizeof(hostcache[n]));
+ strcpy(hostcache[n].name, MSG_ReadString());
+ strcpy(hostcache[n].map, MSG_ReadString());
+ hostcache[n].users = MSG_ReadByte();
+ hostcache[n].maxusers = MSG_ReadByte();
+ c = MSG_ReadByte();
+ if (c != NET_PROTOCOL_VERSION)
+ {
+ strncpy(hostcache[n].cname, hostcache[n].name, sizeof(hostcache[n].cname) - 1);
+ hostcache[n].cname[sizeof(hostcache[n].cname) - 1] = 0;
+ strcpy(hostcache[n].name, "*");
+ strncat(hostcache[n].name, hostcache[n].cname, sizeof(hostcache[n].name) - 1);
+ hostcache[n].name[sizeof(hostcache[n].name) - 1] = 0;
+ }
+ strcpy(hostcache[n].cname, cname);
+ }
+ }
+ break;
+ case CCREP_PLAYER_INFO:
+ // we got a CCREP_PLAYER_INFO??
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_PLAYER_INFO from %s.\n", addressstring2);
+ break;
+ case CCREP_RULE_INFO:
+ // we got a CCREP_RULE_INFO??
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREP_RULE_INFO from %s.\n", addressstring2);
+ break;
+#endif
+ default:
+ break;
+ }
+ // we may not have liked the packet, but it was a valid control
+ // packet, so we're done processing this packet now
+ return true;
+ }
+ ret = 0;
+ if (length >= (int)NET_HEADERSIZE && cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress) && (ret = NetConn_ReceivedMessage(cls.netcon, data, length)) == 2)
+ CL_ParseServerMessage();
+ return ret;
+}
+
+void NetConn_ClientFrame(void)
+{
+ int i, length;
+ lhnetaddress_t peeraddress;
+ netconn_t *conn;
+ NetConn_UpdateServerStuff();
+ if (cls.connect_trying && cls.connect_nextsendtime < realtime)
+ {
+ if (cls.connect_remainingtries == 0)
+ {
+ cls.connect_trying = false;
+ Host_Error("Connect failed\n");
+ return;
+ }
+ if (cls.connect_nextsendtime)
+ Con_Printf("Still trying...\n");
+ else
+ Con_Printf("Trying...\n");
+ cls.connect_nextsendtime = realtime + 1;
+ cls.connect_remainingtries--;
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREQ_CONNECT);
+ MSG_WriteString(&net_message, "QUAKE");
+ MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(cls.connect_mysocket, net_message.data, net_message.cursize, &cls.connect_address);
+ SZ_Clear(&net_message);
+ }
+ for (i = 0;i < cl_numsockets;i++)
+ while (cl_sockets[i] && (length = NetConn_Read(cl_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
+ NetConn_ClientParsePacket(cl_sockets[i], readbuffer, length, &peeraddress);
+ if (cls.netcon && realtime > cls.netcon->lastMessageTime + net_messagetimeout.value)
+ {
+ Con_Printf("Connection timed out\n");
+ CL_Disconnect();
+ }
+ for (conn = netconn_list;conn;conn = conn->next)
+ NetConn_ReSendMessage(conn);
+}
+
+extern void SV_ConnectClient(int clientnum, netconn_t *netconnection);
+int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, qbyte *data, int length, lhnetaddress_t *peeraddress)
+{
+ int i, c, n, ret, clientnum, control, responselength;
+ client_t *client;
+ netconn_t *conn;
+ char *string, response[512], addressstring2[128];
+
+ if (sv.active)
+ {
+ if (length >= 5 && data[0] == 255 && data[1] == 255 && data[2] == 255 && data[3] == 255)
+ {
+ data += 4;
+ length -= 4;
+ string = (char *)data;
+
+ if (developer.integer)
+ {
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+ Con_Printf("NetConn_ServerParsePacket: %s sent us a command:\n", addressstring2);
+ Com_HexDumpToConsole(data, length);
+ }
+
+ if (length >= 7 && !memcmp(string, "getinfo", 7))
+ {
+ const char *challenge = NULL;
+ // If there was a challenge in the getinfo message
+ if (length > 8 && string[7] == ' ')
+ challenge = string + 8;
+ for (i = 0, n = 0;i < svs.maxclients;i++)
+ if (svs.clients[i].active)
+ n++;
+ responselength = snprintf(response, sizeof(response), "\377\377\377\377infoResponse\x0A"
+ "\\gamename\\%s\\modname\\%s\\sv_maxclients\\%d"
+ "\\clients\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d%s%s",
+ gamename, com_modname, svs.maxclients, n,
+ sv.name, hostname.string, NET_PROTOCOL_VERSION, challenge ? "\\challenge\\" : "", challenge ? challenge : "");
+ // does it fit in the buffer?
+ if (responselength < (int)sizeof(response))
+ {
+ if (developer.integer)
+ Con_Printf("Sending reply to master %s - %s\n", addressstring2, response);
+ NetConn_Write(mysocket, response, responselength, peeraddress);
+ }
+ return true;
+ }
+ /*
+ if (!strncmp(string, "ping", 4))
+ {
+ if (developer.integer)
+ Con_Printf("Received ping from %s, sending ack\n", UDP_AddrToString(readaddr));
+ NetConn_Write(mysocket, "\377\377\377\377ack", 7, peeraddress);
+ return true;
+ }
+ if (!strncmp(string, "ack", 3))
+ return true;
+ */
+ // we may not have liked the packet, but it was a command packet, so
+ // we're done processing this packet now
+ return true;
+ }
+ if (length >= 5)
+ {
+ control = BigLong(*((int *)data));
+ if ((control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length)
+ {
+ c = data[4];
+ data += 5;
+ length -= 5;
+ LHNETADDRESS_ToString(peeraddress, addressstring2, sizeof(addressstring2), true);
+#if 1
+ switch (c)
+ {
+ case CCREQ_CONNECT:
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_CONNECT from %s.\n", addressstring2);
+ if (length >= (int)strlen("QUAKE") + 1 + 1)
+ {
+ if (memcmp(data, "QUAKE", strlen("QUAKE") + 1) != 0 || (int)data[strlen("QUAKE") + 1] != NET_PROTOCOL_VERSION)
+ {
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Incompatible version.\" to %s.\n", addressstring2);
+#if 0
+ NetConn_Write(mysocket, "\377\377\377\377reject Incompatible version.", 32, peeraddress);
+#else
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_REJECT);
+ MSG_WriteString(&net_message, "Incompatible version.\n");
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+#endif
+ }
+ else
+ {
+ // see if this client is already connected
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ if (client->active && (ret = LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress)) == 0)//>= 0)
+ break;
+ if (clientnum < svs.maxclients)
+ {
+ // is this a duplicate connection request?
+ if (ret == 0 && realtime - client->netconnection->connecttime < 2.0)
+ {
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending duplicate CCREP_ACCEPT to %s.\n", addressstring2);
+ // yes, so send a duplicate reply
+#if 0
+ NetConn_Write(mysocket, "\377\377\377\377accept", 10, peeraddress);
+#else
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_ACCEPT);
+ MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(client->netconnection->mysocket)));
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+#endif
+ }
+ else
+ {
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: removing crashed/disconnected client #%i \"%s\" (address %s).\n", clientnum, client->name, client->netconnection->address);
+ // it's somebody coming back from a
+ // crash/disconnect so kill old connection
+ // asap and let them retry to get in
+ client->deadsocket = true;
+ }
+ }
+ else
+ {
+ for (clientnum = 0, client = svs.clients;clientnum < svs.maxclients;clientnum++, client++)
+ if (!client->active)
+ break;
+ if (clientnum < svs.maxclients && (client->netconnection = conn = NetConn_Open(mysocket, peeraddress)) != NULL)
+ {
+ // connect to the client
+ // everything is allocated, just fill in the details
+ strcpy(conn->address, addressstring2);
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending CCREP_ACCEPT to %s.\n", addressstring2);
+#if 0
+ NetConn_Write(mysocket, "\377\377\377\377accept", 10, peeraddress);
+#else
+ // send back the info about the server connection
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_ACCEPT);
+ MSG_WriteLong(&net_message, LHNETADDRESS_GetPort(LHNET_AddressFromSocket(conn->mysocket)));
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+#endif
+ // now set up the client struct
+ SV_ConnectClient(clientnum, conn);
+ NetConn_Heartbeat(1);
+ }
+ else
+ {
+ //if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending CCREP_REJECT \"Server is full.\" to %s.\n", addressstring2);
+ // no room; try to let player know
+#if 0
+ NetConn_Write(mysocket, "\377\377\377\377reject Server is full.", 26, peeraddress);
+#else
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_REJECT);
+ MSG_WriteString(&net_message, "Server is full.\n");
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+#endif
+ }
+ }
+ }
+ }
+ break;
+#if 0
+ case CCREQ_SERVER_INFO:
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_SERVER_INFO from %s.\n", addressstring2);
+ if (sv.active && !strcmp(MSG_ReadString(), "QUAKE"))
+ {
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: sending CCREP_SERVER_INFO to %s.\n", addressstring2);
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_SERVER_INFO);
+ UDP_GetSocketAddr(UDP_acceptSock, &newaddr);
+ MSG_WriteString(&net_message, UDP_AddrToString(&newaddr));
+ MSG_WriteString(&net_message, hostname.string);
+ MSG_WriteString(&net_message, sv.name);
+ MSG_WriteByte(&net_message, net_activeconnections);
+ MSG_WriteByte(&net_message, svs.maxclients);
+ MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ break;
+ case CCREQ_PLAYER_INFO:
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_PLAYER_INFO from %s.\n", addressstring2);
+ if (sv.active)
+ {
+ int playerNumber, activeNumber, clientNumber;
+ client_t *client;
+
+ playerNumber = MSG_ReadByte();
+ activeNumber = -1;
+ for (clientNumber = 0, client = svs.clients; clientNumber < svs.maxclients; clientNumber++, client++)
+ if (client->active && ++activeNumber == playerNumber)
+ break;
+ if (clientNumber != svs.maxclients)
+ {
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_PLAYER_INFO);
+ MSG_WriteByte(&net_message, playerNumber);
+ MSG_WriteString(&net_message, client->name);
+ MSG_WriteLong(&net_message, client->colors);
+ MSG_WriteLong(&net_message, (int)client->edict->v->frags);
+ MSG_WriteLong(&net_message, (int)(realtime - client->netconnection->connecttime));
+ MSG_WriteString(&net_message, client->netconnection->address);
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ }
+ break;
+ case CCREQ_RULE_INFO:
+ if (developer.integer)
+ Con_Printf("Datagram_ParseConnectionless: received CCREQ_RULE_INFO from %s.\n", addressstring2);
+ if (sv.active)
+ {
+ char *prevCvarName;
+ cvar_t *var;
+
+ // find the search start location
+ prevCvarName = MSG_ReadString();
+ var = Cvar_FindVarAfter(prevCvarName, CVAR_NOTIFY);
+
+ // send the response
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREP_RULE_INFO);
+ if (var)
+ {
+ MSG_WriteString(&net_message, var->name);
+ MSG_WriteString(&net_message, var->string);
+ }
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress);
+ SZ_Clear(&net_message);
+ }
+ break;
+#endif
+ default:
+ break;
+ }
+#endif
+ // we may not have liked the packet, but it was a valid control
+ // packet, so we're done processing this packet now
+ return true;
+ }
+ }
+ for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+ {
+ if (host_client->active && host_client->netconnection && host_client->netconnection->mysocket == mysocket && !LHNETADDRESS_Compare(&host_client->netconnection->peeraddress, peeraddress))
+ {
+ sv_player = host_client->edict;
+ if ((ret = NetConn_ReceivedMessage(host_client->netconnection, data, length)) == 2)
+ SV_ReadClientMessage();
+ return ret;
+ }
+ }
+ }
+ return 0;
+}
+
+void NetConn_ServerFrame(void)
+{
+ int i, length;
+ lhnetaddress_t peeraddress;
+ netconn_t *conn;
+ NetConn_UpdateServerStuff();
+ for (i = 0;i < sv_numsockets;i++)
+ while (sv_sockets[i] && (length = NetConn_Read(sv_sockets[i], readbuffer, sizeof(readbuffer), &peeraddress)) > 0)
+ NetConn_ServerParsePacket(sv_sockets[i], readbuffer, length, &peeraddress);
+ for (i = 0, host_client = svs.clients;i < svs.maxclients;i++)
+ {
+ if (host_client->active && realtime > host_client->netconnection->lastMessageTime + net_messagetimeout.value)
+ {
+ Con_Printf("Client \"%s\" connection timed out\n", host_client->name);
+ sv_player = host_client->edict;
+ SV_DropClient(false);
+ }
+ }
+ for (conn = netconn_list;conn;conn = conn->next)
+ NetConn_ReSendMessage(conn);
+}
+
+void NetConn_QueryMasters(void)
+{
+ int i;
+ int masternum;
+ int requestlen;
+ lhnetaddress_t masteraddress;
+ char request[256];
+
+ if (hostCacheCount >= HOSTCACHESIZE)
+ return;
+
+ for (i = 0;i < cl_numsockets;i++)
+ {
+ if (cl_sockets[i])
+ {
+#if 0
+ // search LAN
+#if 1
+ UDP_Broadcast(UDP_controlSock, "\377\377\377\377getinfo", 11);
+#else
+ SZ_Clear(&net_message);
+ // save space for the header, filled in later
+ MSG_WriteLong(&net_message, 0);
+ MSG_WriteByte(&net_message, CCREQ_SERVER_INFO);
+ MSG_WriteString(&net_message, "QUAKE");
+ MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION);
+ *((int *)net_message.data) = BigLong(NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK));
+ UDP_Broadcast(UDP_controlSock, net_message.data, net_message.cursize);
+ SZ_Clear(&net_message);
+#endif
+#endif
+
+ // build the getservers
+ requestlen = snprintf(request, sizeof(request), "\377\377\377\377getservers %s %u empty full\x0A", gamename, NET_PROTOCOL_VERSION);
+
+ // search internet
+ for (masternum = 0;sv_masters[masternum].name;masternum++)
+ if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && LHNETADDRESS_GetAddressType(&masteraddress) == LHNETADDRESS_GetAddressType(LHNET_AddressFromSocket(cl_sockets[i])))
+ NetConn_Write(cl_sockets[i], request, requestlen, &masteraddress);
+ }
+ }
+}
+
+void NetConn_Heartbeat(int priority)
+{
+ lhnetaddress_t masteraddress;
+ int masternum;
+ char *request = "\377\377\377\377heartbeat DarkPlaces\x0A";
+ int requestlen = strlen(request);
+ lhnetsocket_t *mysocket;
+
+ // if it's a state change (client connected), limit next heartbeat to no
+ // more than 30 sec in the future
+ if (priority == 1 && nextheartbeattime > realtime + 30.0)
+ nextheartbeattime = realtime + 30.0;
+
+ // limit heartbeatperiod to 30 to 270 second range,
+ // lower limit is to avoid abusing master servers with excess traffic,
+ // upper limit is to avoid timing out on the master server (which uses
+ // 300 sec timeout)
+ if (sv_heartbeatperiod.value < 30)
+ Cvar_SetValueQuick(&sv_heartbeatperiod, 30);
+ if (sv_heartbeatperiod.value > 270)
+ Cvar_SetValueQuick(&sv_heartbeatperiod, 270);
+
+ // make advertising optional and don't advertise singleplayer games, and
+ // only send a heartbeat as often as the admin wants
+ if (sv.active && sv_public.integer && svs.maxclients >= 2 && (priority > 1 || realtime > nextheartbeattime))
+ {
+ nextheartbeattime = realtime + sv_heartbeatperiod.value;
+ for (masternum = 0;sv_masters[masternum].name;masternum++)
+ if (sv_masters[masternum].string && LHNETADDRESS_FromString(&masteraddress, sv_masters[masternum].string, MASTER_PORT) && (mysocket = NetConn_ChooseServerSocketForAddress(&masteraddress)))
+ NetConn_Write(mysocket, request, requestlen, &masteraddress);
+ }
+}
+
+int NetConn_SendToAll(sizebuf_t *data, double blocktime)
+{
+ int i, count = 0;
+ qbyte state[MAX_SCOREBOARD];
+
+ for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+ state[i] = 0;
+
+ // simultaneously wait for the first CanSendMessage and send the message,
+ // then wait for a second CanSendMessage (verifying it was received)
+ blocktime += Sys_DoubleTime();
+ do
+ {
+ count = 0;
+ NetConn_ClientFrame();
+ NetConn_ServerFrame();
+ for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
+ {
+ if (host_client->active && state[i] < 2)
+ {
+ count++;
+ // need to send to this one
+ if (NetConn_CanSendMessage(host_client->netconnection))
+ {
+ if (state[i] == 0 && NetConn_SendReliableMessage(host_client->netconnection, data) == -1)
+ state[i] = 2; // connection lost
+ state[i]++;
+ }
+ }
+ }
+ }
+ while (count && Sys_DoubleTime() < blocktime);
+ return count;
+}
+
+static void MaxPlayers_f(void)
+{
+ int n;
+
+ if (Cmd_Argc() != 2)
+ {
+ Con_Printf("\"maxplayers\" is \"%u\"\n", svs.maxclients);
+ return;
+ }
+
+ if (sv.active)
+ {
+ Con_Printf("maxplayers can not be changed while a server is running.\n");
+ return;
+ }
+
+ n = atoi(Cmd_Argv(1));
+ n = bound(1, n, MAX_SCOREBOARD);
+ if (svs.maxclients != n)
+ Con_Printf("\"maxplayers\" set to \"%u\"\n", n);
+
+ SV_SetMaxClients(n);
+}
+
+static void Net_Heartbeat_f(void)
+{
+ NetConn_Heartbeat(2);
+}
+
+void PrintStats(netconn_t *conn)
+{
+ Con_Printf("address=%21s canSend=%u sendSeq=%6u recvSeq=%6u\n", conn->address, conn->canSend, conn->sendSequence, conn->receiveSequence);
+}
+
+void Net_Stats_f(void)
+{
+ netconn_t *conn;
+ Con_Printf("unreliable messages sent = %i\n", unreliableMessagesSent);
+ Con_Printf("unreliable messages recv = %i\n", unreliableMessagesReceived);
+ Con_Printf("reliable messages sent = %i\n", reliableMessagesSent);
+ Con_Printf("reliable messages received = %i\n", reliableMessagesReceived);
+ Con_Printf("packetsSent = %i\n", packetsSent);
+ Con_Printf("packetsReSent = %i\n", packetsReSent);
+ Con_Printf("packetsReceived = %i\n", packetsReceived);
+ Con_Printf("receivedDuplicateCount = %i\n", receivedDuplicateCount);
+ Con_Printf("droppedDatagrams = %i\n", droppedDatagrams);
+ Con_Printf("connections =\n");
+ for (conn = netconn_list;conn;conn = conn->next)
+ PrintStats(conn);
+}
+
+void Net_Slist_f(void)
+{
+ hostCacheCount = 0;
+ memset(&pingcache, 0, sizeof(pingcache));
+ if (m_state != m_slist)
+ Con_Printf("Sending requests to master servers\n");
+ NetConn_QueryMasters();
+ if (m_state != m_slist)
+ Con_Printf("Listening for replies...\n");
+}
+
+void NetConn_Init(void)
+{
+ int masternum;
+ netconn_mempool = Mem_AllocPool("Networking");
+ Cmd_AddCommand("net_stats", Net_Stats_f);
+ Cmd_AddCommand("net_slist", Net_Slist_f);
+ Cmd_AddCommand("maxplayers", MaxPlayers_f);
+ Cmd_AddCommand("heartbeat", Net_Heartbeat_f);
+ Cvar_RegisterVariable(&net_messagetimeout);
+ Cvar_RegisterVariable(&hostname);
+ Cvar_RegisterVariable(&developer_networking);
+ Cvar_RegisterVariable(&cl_netport);
+ Cvar_RegisterVariable(&cl_netaddress);
+ Cvar_RegisterVariable(&cl_netaddress_ipv6);
+ Cvar_RegisterVariable(&sv_netport);
+ Cvar_RegisterVariable(&sv_netaddress);
+ Cvar_RegisterVariable(&sv_netaddress_ipv6);
+ Cvar_RegisterVariable(&sv_public);
+ Cvar_RegisterVariable(&sv_heartbeatperiod);
+ for (masternum = 0;sv_masters[masternum].name;masternum++)
+ Cvar_RegisterVariable(&sv_masters[masternum]);
+ cl_numsockets = 0;
+ sv_numsockets = 0;
+ memset(&pingcache, 0, sizeof(pingcache));
+ SZ_Alloc(&net_message, NET_MAXMESSAGE, "net_message");
+ LHNET_Init();
+}
+
+void NetConn_Shutdown(void)
+{
+ NetConn_CloseClientPorts();
+ NetConn_CloseServerPorts();
+ LHNET_Shutdown();
+}
+
projects / xonotic / darkplaces.git / commitdiff