// Written by Forest Hale 2003-06-15 and placed into public domain. #include #include #include #include #ifdef WIN32 #include #else #include #include #include #include #include #include #include #endif // for Z_Malloc/Z_Free in quake #ifndef STANDALONETEST #include "quakedef.h" #include "zone.h" #include "sys.h" #include "netconn.h" #else #define Con_Print printf #define Con_Printf printf #define Z_Malloc malloc #define Z_Free free #endif #include "lhnet.h" // to make LHNETADDRESS_FromString resolve repeated hostnames faster, cache them #define MAX_NAMECACHE 64 static struct namecache_s { lhnetaddress_t address; double expirationtime; char name[64]; } namecache[MAX_NAMECACHE]; static int namecacheposition = 0; int LHNETADDRESS_FromPort(lhnetaddress_t *address, int addresstype, int port) { if (!address) return 0; 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((unsigned short)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((unsigned short)port); return 1; } return 0; } int LHNETADDRESS_FromString(lhnetaddress_t *address, const char *string, int defaultport) { int i, port, namelen, d1, d2, d3, d4; struct hostent *hostentry; const char *colon; char name[128]; if (!address || !string) return 0; 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 as dotted decimal ipv4 address first if (sscanf(name, "%d.%d.%d.%d", &d1, &d2, &d3, &d4) == 4 && (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->addressdata.inet4.family = LHNETADDRESSTYPE_INET4_FAMILY; address->addressdata.inet4.port = htons((unsigned short)port); address->addressdata.inet4.address[0] = (unsigned char)d1; address->addressdata.inet4.address[1] = (unsigned char)d2; address->addressdata.inet4.address[2] = (unsigned char)d3; address->addressdata.inet4.address[3] = (unsigned char)d4; #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; } for (i = 0;i < MAX_NAMECACHE;i++) if (!strcmp(namecache[i].name, name)) break; if (i < MAX_NAMECACHE && Sys_DoubleTime() < namecache[i].expirationtime) { *address = namecache[i].address; if (address->addresstype == LHNETADDRESSTYPE_INET6) { address->addressdata.inet6.port = htons((unsigned short)port); return 1; } else if (address->addresstype == LHNETADDRESSTYPE_INET4) { address->addressdata.inet4.port = htons((unsigned short)port); return 1; } return false; } // try gethostbyname (handles dns and other ip formats) 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((unsigned short)port); memcpy(address->addressdata.inet6.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet6.address)); for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++) namecache[namecacheposition].name[i] = name[i]; namecache[namecacheposition].name[i] = 0; namecache[namecacheposition].expirationtime = Sys_DoubleTime() + 12 * 3600; // 12 hours namecache[namecacheposition].address = *address; namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE; #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((unsigned short)port); memcpy(address->addressdata.inet4.address, hostentry->h_addr_list[0], sizeof(address->addressdata.inet4.address)); for (i = 0;i < (int)sizeof(namecache[namecacheposition].name)-1 && name[i];i++) namecache[namecacheposition].name[i] = name[i]; namecache[namecacheposition].name[i] = 0; namecache[namecacheposition].expirationtime = Sys_DoubleTime() + 12 * 3600; // 12 hours namecache[namecacheposition].address = *address; namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE; #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; } } #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; namecache[namecacheposition].expirationtime = Sys_DoubleTime() + 12 * 3600; // 12 hours namecache[namecacheposition].address.addresstype = LHNETADDRESSTYPE_NONE; namecacheposition = (namecacheposition + 1) % MAX_NAMECACHE; return 0; } int LHNETADDRESS_ToString(const lhnetaddress_t *address, char *string, int stringbuffersize, int includeport) { *string = 0; if (!address || !string || stringbuffersize < 1) return 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) { if (address) return address->addresstype; else return LHNETADDRESSTYPE_NONE; } int LHNETADDRESS_GetPort(const lhnetaddress_t *address) { if (!address) return -1; 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) { if (!address) return 0; switch(address->addresstype) { case LHNETADDRESSTYPE_LOOP: address->addressdata.loop.port = port; return 1; case LHNETADDRESSTYPE_INET4: address->addressdata.inet4.port = htons((unsigned short)port); return 1; case LHNETADDRESSTYPE_INET6: address->addressdata.inet6.port = htons((unsigned short)port); return 1; default: return 0; } } int LHNETADDRESS_Compare(const lhnetaddress_t *address1, const lhnetaddress_t *address2) { if (!address1 || !address2) return 1; 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; #ifndef STANDALONETEST double sentdoubletime; #endif 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; } static const char *LHNETPRIVATE_StrError(void) { #ifdef WIN32 int i = WSAGetLastError(); switch (i) { case WSAEINTR: return "WSAEINTR"; case WSAEBADF: return "WSAEBADF"; case WSAEACCES: return "WSAEACCES"; case WSAEFAULT: return "WSAEFAULT"; case WSAEINVAL: return "WSAEINVAL"; case WSAEMFILE: return "WSAEMFILE"; case WSAEWOULDBLOCK: return "WSAEWOULDBLOCK"; case WSAEINPROGRESS: return "WSAEINPROGRESS"; case WSAEALREADY: return "WSAEALREADY"; case WSAENOTSOCK: return "WSAENOTSOCK"; case WSAEDESTADDRREQ: return "WSAEDESTADDRREQ"; case WSAEMSGSIZE: return "WSAEMSGSIZE"; case WSAEPROTOTYPE: return "WSAEPROTOTYPE"; case WSAENOPROTOOPT: return "WSAENOPROTOOPT"; case WSAEPROTONOSUPPORT: return "WSAEPROTONOSUPPORT"; case WSAESOCKTNOSUPPORT: return "WSAESOCKTNOSUPPORT"; case WSAEOPNOTSUPP: return "WSAEOPNOTSUPP"; case WSAEPFNOSUPPORT: return "WSAEPFNOSUPPORT"; case WSAEAFNOSUPPORT: return "WSAEAFNOSUPPORT"; case WSAEADDRINUSE: return "WSAEADDRINUSE"; case WSAEADDRNOTAVAIL: return "WSAEADDRNOTAVAIL"; case WSAENETDOWN: return "WSAENETDOWN"; case WSAENETUNREACH: return "WSAENETUNREACH"; case WSAENETRESET: return "WSAENETRESET"; case WSAECONNABORTED: return "WSAECONNABORTED"; case WSAECONNRESET: return "WSAECONNRESET"; case WSAENOBUFS: return "WSAENOBUFS"; case WSAEISCONN: return "WSAEISCONN"; case WSAENOTCONN: return "WSAENOTCONN"; case WSAESHUTDOWN: return "WSAESHUTDOWN"; case WSAETOOMANYREFS: return "WSAETOOMANYREFS"; case WSAETIMEDOUT: return "WSAETIMEDOUT"; case WSAECONNREFUSED: return "WSAECONNREFUSED"; case WSAELOOP: return "WSAELOOP"; case WSAENAMETOOLONG: return "WSAENAMETOOLONG"; case WSAEHOSTDOWN: return "WSAEHOSTDOWN"; case WSAEHOSTUNREACH: return "WSAEHOSTUNREACH"; case WSAENOTEMPTY: return "WSAENOTEMPTY"; case WSAEPROCLIM: return "WSAEPROCLIM"; case WSAEUSERS: return "WSAEUSERS"; case WSAEDQUOT: return "WSAEDQUOT"; case WSAESTALE: return "WSAESTALE"; case WSAEREMOTE: return "WSAEREMOTE"; case WSAEDISCON: return "WSAEDISCON"; case 0: return "no error"; default: return "unknown WSAE error"; } #else return strerror(errno); #endif } lhnetsocket_t *LHNET_OpenSocket_Connectionless(lhnetaddress_t *address) { lhnetsocket_t *lhnetsocket, *s; if (!address) return NULL; lhnetsocket = (lhnetsocket_t *)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 || (lhnet_didWSAStartup = !WSAStartup(MAKEWORD(1, 1), &lhnet_winsockdata))) { #endif if ((lhnetsocket->inetsocket = socket(address->addresstype == LHNETADDRESSTYPE_INET6 ? LHNETADDRESSTYPE_INET6_FAMILY : LHNETADDRESSTYPE_INET4_FAMILY, SOCK_DGRAM, IPPROTO_UDP)) != -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 { #ifdef WIN32 int namelen; #else socklen_t namelen; #endif namelen = address->addresstype == LHNETADDRESSTYPE_INET6 ? sizeof(lhnetsocket->address.addressdata.inet6) : sizeof(lhnetsocket->address.addressdata.inet4); if (bind(lhnetsocket->inetsocket, (struct sockaddr *)&lhnetsocket->address.addressdata, namelen) != -1) { int i = 1; getsockname(lhnetsocket->inetsocket, (struct sockaddr *)&lhnetsocket->address.addressdata, &namelen); // 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; return lhnetsocket; } else Con_Printf("LHNET_OpenSocket_Connectionless: bind returned error: %s\n", LHNETPRIVATE_StrError()); } else Con_Printf("LHNET_OpenSocket_Connectionless: ioctlsocket returned error: %s\n", LHNETPRIVATE_StrError()); #ifdef WIN32 closesocket(lhnetsocket->inetsocket); #else close(lhnetsocket->inetsocket); #endif } else Con_Printf("LHNET_OpenSocket_Connectionless: socket returned error: %s\n", LHNETPRIVATE_StrError()); #ifdef WIN32 } else Con_Print("LHNET_OpenSocket_Connectionless: WSAStartup failed\n"); #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) { if (sock) return &sock->address; else return NULL; } int LHNET_Read(lhnetsocket_t *lhnetsocket, void *content, int maxcontentlength, lhnetaddress_t *address) { int value = 0; if (!lhnetsocket || !address || !content || maxcontentlength < 1) return -1; 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 (p->timeout < currenttime) { // unlink and free p->next->prev = p->prev; p->prev->next = p->next; Z_Free(p); continue; } #ifndef STANDALONETEST if (cl_netlocalping.value && (Sys_DoubleTime() - cl_netlocalping.value * (1.0 / 2000.0)) < p->sentdoubletime) continue; #endif 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 (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET4) { unsigned 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) return 0; switch (e) { case WSAECONNREFUSED: Con_Print("Connection refused\n"); return 0; } #else if (errno == EWOULDBLOCK) return 0; switch (errno) { case ECONNREFUSED: Con_Print("Connection refused\n"); return 0; } #endif } } else if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_INET6) { unsigned 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) return 0; switch (e) { case WSAECONNREFUSED: Con_Print("Connection refused\n"); return 0; } #else if (errno == EWOULDBLOCK) return 0; switch (errno) { case ECONNREFUSED: Con_Print("Connection refused\n"); 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 || !content || contentlength < 1) return -1; if (lhnetsocket->address.addresstype != address->addresstype) return -1; if (lhnetsocket->address.addresstype == LHNETADDRESSTYPE_LOOP) { lhnetpacket_t *p; p = (lhnetpacket_t *)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; #ifndef STANDALONETEST p->sentdoubletime = Sys_DoubleTime(); #endif 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 [ ]\n"); return -1; } #endif