X-Git-Url: http://git.xonotic.org/?a=blobdiff_plain;f=netconn.c;h=160803f824939d8ced6191ce721627f3fa52fa5c;hb=27b75893ba46058b5ca680f3c2aaae7233fe4270;hp=f8d3a39d7c28f430194fa0a3a0b153c598ab3af0;hpb=62b1a43c04dd50f4e8a0bfa00974eb880c3b0795;p=xonotic%2Fdarkplaces.git diff --git a/netconn.c b/netconn.c index f8d3a39d..160803f8 100755 --- a/netconn.c +++ b/netconn.c @@ -21,6 +21,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "quakedef.h" +#include "thread.h" #include "lhnet.h" // for secure rcon authentication @@ -35,6 +36,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. cvar_t sv_public = {0, "sv_public", "0", "1: advertises this server on the master server (so that players can find it in the server browser); 0: allow direct queries only; -1: do not respond to direct queries; -2: do not allow anyone to connect; -3: already block at getchallenge level"}; cvar_t sv_public_rejectreason = {0, "sv_public_rejectreason", "The server is closing.", "Rejection reason for connects when sv_public is -2"}; static cvar_t sv_heartbeatperiod = {CVAR_SAVE, "sv_heartbeatperiod", "120", "how often to send heartbeat in seconds (only used if sv_public is 1)"}; +extern cvar_t sv_status_privacy; static cvar_t sv_masters [] = { @@ -45,6 +47,9 @@ static cvar_t sv_masters [] = {0, "sv_masterextra1", "69.59.212.88", "ghdigital.com - default master server 1 (admin: LordHavoc)"}, // admin: LordHavoc {0, "sv_masterextra2", "64.22.107.125", "dpmaster.deathmask.net - default master server 2 (admin: Willis)"}, // admin: Willis {0, "sv_masterextra3", "92.62.40.73", "dpmaster.tchr.no - default master server 3 (admin: tChr)"}, // admin: tChr +#ifdef SUPPORTIPV6 + {0, "sv_masterextra4", "[2001:41d0:2:1628::4450]:27950", "dpmaster.div0.qc.to - default master server 4 (admin: divVerent)"}, // admin: divVerent +#endif {0, NULL, NULL, NULL} }; @@ -58,7 +63,7 @@ static cvar_t sv_qwmasters [] = {0, "sv_qwmasterextra2", "asgaard.morphos-team.net:27000", "Global master server. (admin: unknown)"}, {0, "sv_qwmasterextra3", "qwmaster.ocrana.de:27000", "German master server. (admin: unknown)"}, {0, "sv_qwmasterextra4", "masterserver.exhale.de:27000", "German master server. (admin: unknown)"}, - {0, "sv_qwmasterextra5", "kubus.rulez.pl:27000", "Poland master server. (admin: unknown)"}, + {0, "sv_qwmasterextra5", "qwmaster.fodquake.net:27000", "Global master server. (admin: unknown)"}, {0, NULL, NULL, NULL} }; @@ -109,6 +114,8 @@ int masterreplycount = 0; int serverquerycount = 0; int serverreplycount = 0; +challenge_t challenge[MAX_CHALLENGES]; + /// this is only false if there are still servers left to query static qboolean serverlist_querysleep = true; static qboolean serverlist_paused = false; @@ -119,6 +126,8 @@ static double serverlist_querywaittime = 0; static unsigned char sendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE]; static unsigned char readbuffer[NET_HEADERSIZE+NET_MAXMESSAGE]; +static unsigned char cryptosendbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE]; +static unsigned char cryptoreadbuffer[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE]; static int cl_numsockets; static lhnetsocket_t *cl_sockets[16]; @@ -127,6 +136,7 @@ static lhnetsocket_t *sv_sockets[16]; netconn_t *netconn_list = NULL; mempool_t *netconn_mempool = NULL; +void *netconn_mutex = NULL; cvar_t cl_netport = {0, "cl_port", "0", "forces client to use chosen port number if not 0"}; cvar_t sv_netport = {0, "port", "26000", "server port for players to connect to"}; @@ -159,16 +169,29 @@ qboolean serverlist_consoleoutput; static int nFavorites = 0; static lhnetaddress_t favorites[MAX_FAVORITESERVERS]; +static int nFavorites_idfp = 0; +static char favorites_idfp[MAX_FAVORITESERVERS][FP64_SIZE+1]; void NetConn_UpdateFavorites(void) { const char *p; nFavorites = 0; + nFavorites_idfp = 0; p = net_slist_favorites.string; while((size_t) nFavorites < sizeof(favorites) / sizeof(*favorites) && COM_ParseToken_Console(&p)) { - if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000)) - ++nFavorites; + if(com_token[0] != '[' && strlen(com_token) == FP64_SIZE && !strchr(com_token, '.')) + // currently 44 bytes, longest possible IPv6 address: 39 bytes, so this works + // (if v6 address contains port, it must start with '[') + { + strlcpy(favorites_idfp[nFavorites_idfp], com_token, sizeof(favorites_idfp[nFavorites_idfp])); + ++nFavorites_idfp; + } + else + { + if(LHNETADDRESS_FromString(&favorites[nFavorites], com_token, 26000)) + ++nFavorites; + } } } @@ -392,8 +415,8 @@ static void ServerList_ViewList_Insert( serverlist_entry_t *entry ) !( gameversion_min.integer >= 0 // min/max range set by user/mod? && gameversion_max.integer >= 0 - && gameversion_min.integer >= entry->info.gameversion // version of server in min/max range? - && gameversion_max.integer <= entry->info.gameversion + && gameversion_min.integer <= entry->info.gameversion // version of server in min/max range? + && gameversion_max.integer >= entry->info.gameversion ) ) return; @@ -402,6 +425,7 @@ static void ServerList_ViewList_Insert( serverlist_entry_t *entry ) entry->info.isfavorite = false; if(LHNETADDRESS_FromString(&addr, entry->info.cname, 26000)) { + char idfp[FP64_SIZE+1]; for(i = 0; i < nFavorites; ++i) { if(LHNETADDRESS_Compare(&addr, &favorites[i]) == 0) @@ -410,6 +434,17 @@ static void ServerList_ViewList_Insert( serverlist_entry_t *entry ) break; } } + if(Crypto_RetrieveHostKey(&addr, 0, NULL, 0, idfp, sizeof(idfp), NULL)) + { + for(i = 0; i < nFavorites_idfp; ++i) + { + if(!strcmp(idfp, favorites_idfp[i])) + { + entry->info.isfavorite = true; + break; + } + } + } } // FIXME: change this to be more readable (...) @@ -564,8 +599,13 @@ void ServerList_QueryList(qboolean resetcache, qboolean querydp, qboolean queryq int NetConn_Read(lhnetsocket_t *mysocket, void *data, int maxlength, lhnetaddress_t *peeraddress) { - int length = LHNET_Read(mysocket, data, maxlength, peeraddress); + int length; int i; + if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex) + Thread_LockMutex(netconn_mutex); + length = LHNET_Read(mysocket, data, maxlength, peeraddress); + if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex) + Thread_UnlockMutex(netconn_mutex); if (length == 0) return 0; if (cl_netpacketloss_receive.integer) @@ -596,7 +636,11 @@ int NetConn_Write(lhnetsocket_t *mysocket, const void *data, int length, const l for (i = 0;i < cl_numsockets;i++) if (cl_sockets[i] == mysocket && (rand() % 100) < cl_netpacketloss_send.integer) return length; + if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex) + Thread_LockMutex(netconn_mutex); ret = LHNET_Write(mysocket, data, length, peeraddress); + if (mysocket->address.addresstype == LHNETADDRESSTYPE_LOOP && netconn_mutex) + Thread_UnlockMutex(netconn_mutex); if (developer_networking.integer) { char addressstring[128], addressstring2[128]; @@ -712,6 +756,8 @@ int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolvers unsigned int packetLen; unsigned int dataLen; unsigned int eom; + const void *sendme; + size_t sendmelen; // if a reliable message fragment has been lost, send it again if (conn->sendMessageLength && (realtime - conn->lastSendTime) > 1.0) @@ -735,13 +781,14 @@ int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolvers conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28; - if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen) + sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer)); + if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen) { conn->lastSendTime = realtime; packetsReSent++; } - totallen += packetLen + 28; + totallen += sendmelen + 28; } // if we have a new reliable message to send, do so @@ -785,13 +832,15 @@ int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolvers conn->outgoing_netgraph[conn->outgoing_packetcounter].reliablebytes += packetLen + 28; - NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress); + sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer)); + if(sendme) + NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress); conn->lastSendTime = realtime; packetsSent++; reliableMessagesSent++; - totallen += packetLen + 28; + totallen += sendmelen + 28; } // if we have an unreliable message to send, do so @@ -813,12 +862,14 @@ int NetConn_SendUnreliableMessage(netconn_t *conn, sizebuf_t *data, protocolvers conn->outgoing_netgraph[conn->outgoing_packetcounter].unreliablebytes += packetLen + 28; - NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress); + sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer)); + if(sendme) + NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress); packetsSent++; unreliableMessagesSent++; - totallen += packetLen + 28; + totallen += sendmelen + 28; } } @@ -1084,7 +1135,7 @@ void NetConn_UpdateSockets(void) } } -static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int length, protocolversion_t protocol, double newtimeout) +static int NetConn_ReceivedMessage(netconn_t *conn, const unsigned char *data, size_t length, protocolversion_t protocol, double newtimeout) { int originallength = length; if (length < 8) @@ -1168,7 +1219,16 @@ static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int len unsigned int count; unsigned int flags; unsigned int sequence; - int qlength; + size_t qlength; + const void *sendme; + size_t sendmelen; + + originallength = length; + data = (const unsigned char *) Crypto_DecryptPacket(&conn->crypto, data, length, cryptoreadbuffer, &length, sizeof(cryptoreadbuffer)); + if(!data) + return 0; + if(length < 8) + return 0; qlength = (unsigned int)BuffBigLong(data); flags = qlength & ~NETFLAG_LENGTH_MASK; @@ -1259,7 +1319,8 @@ static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int len conn->nq.sendSequence++; - if (NetConn_Write(conn->mysocket, (void *)&sendbuffer, packetLen, &conn->peeraddress) == (int)packetLen) + sendme = Crypto_EncryptPacket(&conn->crypto, &sendbuffer, packetLen, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer)); + if (sendme && NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress) == (int)sendmelen) { conn->lastSendTime = realtime; packetsSent++; @@ -1282,7 +1343,9 @@ static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int len conn->outgoing_netgraph[conn->outgoing_packetcounter].ackbytes += 8 + 28; StoreBigLong(temppacket, 8 | NETFLAG_ACK); StoreBigLong(temppacket + 4, sequence); - NetConn_Write(conn->mysocket, (unsigned char *)temppacket, 8, &conn->peeraddress); + sendme = Crypto_EncryptPacket(&conn->crypto, temppacket, 8, &cryptosendbuffer, &sendmelen, sizeof(cryptosendbuffer)); + if(sendme) + NetConn_Write(conn->mysocket, sendme, sendmelen, &conn->peeraddress); if (sequence == conn->nq.receiveSequence) { conn->lastMessageTime = realtime; @@ -1322,6 +1385,7 @@ static int NetConn_ReceivedMessage(netconn_t *conn, unsigned char *data, int len void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, protocolversion_t initialprotocol) { + crypto_t *crypto; cls.connect_trying = false; M_Update_Return_Reason(""); // the connection request succeeded, stop current connection and set up a new connection @@ -1331,6 +1395,19 @@ void NetConn_ConnectionEstablished(lhnetsocket_t *mysocket, lhnetaddress_t *peer Host_ShutdownServer (); // allocate a net connection to keep track of things cls.netcon = NetConn_Open(mysocket, peeraddress); + crypto = &cls.crypto; + if(crypto && crypto->authenticated) + { + Crypto_ServerFinishInstance(&cls.netcon->crypto, crypto); + Con_Printf("%s connection to %s has been established: server is %s@%.*s, I am %.*s@%.*s\n", + crypto->use_aes ? "Encrypted" : "Authenticated", + cls.netcon->address, + crypto->server_idfp[0] ? crypto->server_idfp : "-", + crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-", + crypto_keyfp_recommended_length, crypto->client_idfp[0] ? crypto->client_idfp : "-", + crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-" + ); + } Con_Printf("Connection accepted to %s\n", cls.netcon->address); key_dest = key_game; m_state = m_none; @@ -1432,8 +1509,8 @@ static void NetConn_ClientParsePacket_ServerList_UpdateCache(int n) !( gameversion_min.integer >= 0 // min/max range set by user/mod? && gameversion_max.integer >= 0 - && gameversion_min.integer >= info->gameversion // version of server in min/max range? - && gameversion_max.integer <= info->gameversion + && gameversion_min.integer <= info->gameversion // version of server in min/max range? + && gameversion_max.integer >= info->gameversion ) ) ? '1' : '4', info->mod, info->map); @@ -1524,6 +1601,7 @@ static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *sen if (port != 0) { +#ifdef WHY_JUST_WHY const char *ifname; /// \TODO: make some basic checks of the IP address (broadcast, ...) @@ -1531,16 +1609,17 @@ static void NetConn_ClientParsePacket_ServerList_ParseDPList(lhnetaddress_t *sen ifname = LHNETADDRESS_GetInterfaceName(senderaddress); if (ifname != NULL) { - dpsnprintf (ipstring, sizeof (ipstring), "[%x%02x:%x%02x:%x%02x:%x%02x:%x%02x:%x%02x:%x%02x:%x%02x%%%s]:%hu", - data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8], - data[9], data[10], data[11], data[12], data[13], data[14], data[15], data[16], + dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x%%%s]:%hu", + (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8], + (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16], ifname, port); } else +#endif { - dpsnprintf (ipstring, sizeof (ipstring), "[%x%02x:%x%02x:%x%02x:%x%02x:%x%02x:%x%02x:%x%02x:%x%02x]:%hu", - data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8], - data[9], data[10], data[11], data[12], data[13], data[14], data[15], data[16], + dpsnprintf (ipstring, sizeof (ipstring), "[%x:%x:%x:%x:%x:%x:%x:%x]:%hu", + (data[1] << 8) | data[2], (data[3] << 8) | data[4], (data[5] << 8) | data[6], (data[7] << 8) | data[8], + (data[9] << 8) | data[10], (data[11] << 8) | data[12], (data[13] << 8) | data[14], (data[15] << 8) | data[16], port); } } @@ -1576,6 +1655,8 @@ static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *dat const char *s; char *string, addressstring2[128], ipstring[32]; char stringbuf[16384]; + char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE]; + size_t sendlength; // quakeworld ingame packet fromserver = cls.netcon && mysocket == cls.netcon->mysocket && !LHNETADDRESS_Compare(&cls.netcon->peeraddress, peeraddress); @@ -1600,7 +1681,34 @@ static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *dat Com_HexDumpToConsole(data, length); } - if (length > 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying) + sendlength = sizeof(senddata) - 4; + switch(Crypto_ClientParsePacket(string, length, senddata+4, &sendlength, peeraddress)) + { + case CRYPTO_NOMATCH: + // nothing to do + break; + case CRYPTO_MATCH: + if(sendlength) + { + memcpy(senddata, "\377\377\377\377", 4); + NetConn_Write(mysocket, senddata, sendlength+4, peeraddress); + } + break; + case CRYPTO_DISCARD: + if(sendlength) + { + memcpy(senddata, "\377\377\377\377", 4); + NetConn_Write(mysocket, senddata, sendlength+4, peeraddress); + } + return true; + break; + case CRYPTO_REPLACE: + string = senddata+4; + length = sendlength; + break; + } + + if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.rcon_trying) { int i = 0, j; for (j = 0;j < MAX_RCONS;j++) @@ -1651,7 +1759,7 @@ static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *dat } } } - if (length > 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying) + if (length >= 10 && !memcmp(string, "challenge ", 10) && cls.connect_trying) { // darkplaces or quake3 char protocolnames[1400]; @@ -1673,7 +1781,7 @@ static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *dat } if (length > 7 && !memcmp(string, "reject ", 7) && cls.connect_trying) { - char rejectreason[32]; + char rejectreason[128]; cls.connect_trying = false; string += 7; length = min(length - 7, (int)sizeof(rejectreason) - 1); @@ -1920,7 +2028,7 @@ static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *dat return ret; } // netquake control packets, supported for compatibility only - if (length >= 5 && (control = BuffBigLong(data)) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length) + if (length >= 5 && (control = BuffBigLong(data)) && (control & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (control & NETFLAG_LENGTH_MASK) == length && !ENCRYPTION_REQUIRED) { int n; serverlist_info_t *info; @@ -1941,6 +2049,21 @@ static int NetConn_ClientParsePacket(lhnetsocket_t *mysocket, unsigned char *dat lhnetaddress_t clientportaddress; clientportaddress = *peeraddress; LHNETADDRESS_SetPort(&clientportaddress, MSG_ReadLong()); + // extra ProQuake stuff + if (length >= 6) + cls.proquake_servermod = MSG_ReadByte(); // MOD_PROQUAKE + else + cls.proquake_servermod = 0; + if (length >= 7) + cls.proquake_serverversion = MSG_ReadByte(); // version * 10 + else + cls.proquake_serverversion = 0; + if (length >= 8) + cls.proquake_serverflags = MSG_ReadByte(); // flags (mainly PQF_CHEATFREE) + else + cls.proquake_serverflags = 0; + if (cls.proquake_servermod == 1) + Con_Printf("Connected to ProQuake %.1f server, enabling precise aim\n", cls.proquake_serverversion / 10.0f); // update the server IP in the userinfo (QW servers expect this, and it is used by the reconnect command) InfoString_SetValue(cls.userinfo, sizeof(cls.userinfo), "*ip", addressstring2); M_Update_Return_Reason("Accepted"); @@ -2121,6 +2244,15 @@ void NetConn_ClientFrame(void) MSG_WriteByte(&net_message, CCREQ_CONNECT); MSG_WriteString(&net_message, "QUAKE"); MSG_WriteByte(&net_message, NET_PROTOCOL_VERSION); + // extended proquake stuff + MSG_WriteByte(&net_message, 1); // mod = MOD_PROQUAKE + // this version matches ProQuake 3.40, the first version to support + // the NAT fix, and it only supports the NAT fix for ProQuake 3.40 or + // higher clients, so we pretend we are that version... + MSG_WriteByte(&net_message, 34); // version * 10 + MSG_WriteByte(&net_message, 0); // flags + MSG_WriteLong(&net_message, 0); // password + // write the packetsize now... StoreBigLong(net_message.data, 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); @@ -2143,15 +2275,6 @@ void NetConn_ClientFrame(void) } } -#define MAX_CHALLENGES 128 -struct challenge_s -{ - lhnetaddress_t address; - double time; - char string[12]; -} -challenge[MAX_CHALLENGES]; - static void NetConn_BuildChallengeString(char *buffer, int bufferlength) { int i; @@ -2174,6 +2297,8 @@ static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg unsigned int nb_clients = 0, nb_bots = 0, i; int length; char teambuf[3]; + const char *crypto_idstring; + const char *str; SV_VM_Begin(); @@ -2189,34 +2314,34 @@ static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg } *qcstatus = 0; - if(prog->globaloffsets.worldstatus >= 0) + str = PRVM_GetString(PRVM_serverglobalstring(worldstatus)); + if(str && *str) { - const char *str = PRVM_G_STRING(prog->globaloffsets.worldstatus); - if(str && *str) - { - char *p; - const char *q; - p = qcstatus; - for(q = str; *q; ++q) - if(*q != '\\' && *q != '\n') - *p++ = *q; - *p = 0; - } + char *p; + const char *q; + p = qcstatus; + for(q = str; *q && (size_t)(p - qcstatus) < (sizeof(qcstatus) - 1); ++q) + if(*q != '\\' && *q != '\n') + *p++ = *q; + *p = 0; } /// \TODO: we should add more information for the full status string + crypto_idstring = Crypto_GetInfoResponseDataString(); length = dpsnprintf(out_msg, out_size, "\377\377\377\377%s\x0A" "\\gamename\\%s\\modname\\%s\\gameversion\\%d\\sv_maxclients\\%d" "\\clients\\%d\\bots\\%d\\mapname\\%s\\hostname\\%s\\protocol\\%d" "%s%s" "%s%s" + "%s%s" "%s", fullstatus ? "statusResponse" : "infoResponse", gamename, com_modname, gameversion.integer, svs.maxclients, nb_clients, nb_bots, sv.worldbasename, hostname.string, NET_PROTOCOL_VERSION, *qcstatus ? "\\qcstatus\\" : "", qcstatus, challenge ? "\\challenge\\" : "", challenge ? challenge : "", + crypto_idstring ? "\\d0_blind_id\\" : "", crypto_idstring ? crypto_idstring : "", fullstatus ? "\n" : ""); // Make sure it fits in the buffer @@ -2242,6 +2367,8 @@ static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg int nameind, cleanind, pingvalue; char curchar; char cleanname [sizeof(cl->name)]; + const char *str; + prvm_edict_t *ed; // Remove all characters '"' and '\' in the player name nameind = 0; @@ -2265,19 +2392,17 @@ static qboolean NetConn_BuildStatusResponse(const char* challenge, char* out_msg pingvalue = 0; *qcstatus = 0; - if(prog->fieldoffsets.clientstatus >= 0) + ed = PRVM_EDICT_NUM(i + 1); + str = PRVM_GetString(PRVM_serveredictstring(ed, clientstatus)); + if(str && *str) { - const char *str = PRVM_E_STRING(PRVM_EDICT_NUM(i + 1), prog->fieldoffsets.clientstatus); - if(str && *str) - { - char *p; - const char *q; - p = qcstatus; - for(q = str; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q) - if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q)) - *p++ = *q; - *p = 0; - } + char *p; + const char *q; + p = qcstatus; + for(q = str; *q && p != qcstatus + sizeof(qcstatus) - 1; ++q) + if(*q != '\\' && *q != '"' && !ISWHITESPACE(*q)) + *p++ = *q; + *p = 0; } if ((gamemode == GAME_NEXUIZ || gamemode == GAME_XONOTIC) && (teamplay.integer > 0)) @@ -2545,7 +2670,7 @@ allow: return va("%srcon", restricted ? "restricted " : ""); } -void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos) +void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const char *addressstring2, const char *userlevel, const char *s, const char *endpos, qboolean proquakeprotocol) { if(userlevel) { @@ -2562,14 +2687,14 @@ void RCon_Execute(lhnetsocket_t *mysocket, lhnetaddress_t *peeraddress, const ch Con_Printf("\n"); if (!host_client || !host_client->netconnection || LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) != LHNETADDRESSTYPE_LOOP) - Con_Rcon_Redirect_Init(mysocket, peeraddress); + Con_Rcon_Redirect_Init(mysocket, peeraddress, proquakeprotocol); while(s != endpos) { size_t l = strlen(s); if(l) { client_t *host_client_save = host_client; - Cmd_ExecuteString(s, src_command); + Cmd_ExecuteString(s, src_command, true); host_client = host_client_save; // in case it is a command that changes host_client (like restart) } @@ -2592,6 +2717,8 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat char *s, *string, response[1400], addressstring2[128]; static char stringbuf[16384]; qboolean islocal = (LHNETADDRESS_GetAddressType(peeraddress) == LHNETADDRESSTYPE_LOOP); + char senddata[NET_HEADERSIZE+NET_MAXMESSAGE+CRYPTO_HEADERSIZE]; + size_t sendlength, response_len; if (!sv.active) return false; @@ -2625,6 +2752,33 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat Com_HexDumpToConsole(data, length); } + sendlength = sizeof(senddata) - 4; + switch(Crypto_ServerParsePacket(string, length, senddata+4, &sendlength, peeraddress)) + { + case CRYPTO_NOMATCH: + // nothing to do + break; + case CRYPTO_MATCH: + if(sendlength) + { + memcpy(senddata, "\377\377\377\377", 4); + NetConn_Write(mysocket, senddata, sendlength+4, peeraddress); + } + break; + case CRYPTO_DISCARD: + if(sendlength) + { + memcpy(senddata, "\377\377\377\377", 4); + NetConn_Write(mysocket, senddata, sendlength+4, peeraddress); + } + return true; + break; + case CRYPTO_REPLACE: + string = senddata+4; + length = sendlength; + break; + } + if (length >= 12 && !memcmp(string, "getchallenge", 12) && (islocal || sv_public.integer > -3)) { for (i = 0, best = 0, besttime = realtime;i < MAX_CHALLENGES;i++) @@ -2645,24 +2799,50 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat } challenge[i].time = realtime; // send the challenge - NetConn_WriteString(mysocket, va("\377\377\377\377challenge %s", challenge[i].string), peeraddress); + dpsnprintf(response, sizeof(response), "\377\377\377\377challenge %s", challenge[i].string); + response_len = strlen(response) + 1; + Crypto_ServerAppendToChallenge(string, length, response, &response_len, sizeof(response)); + NetConn_Write(mysocket, response, response_len, peeraddress); return true; } if (length > 8 && !memcmp(string, "connect\\", 8)) { + crypto_t *crypto = Crypto_ServerGetInstance(peeraddress); string += 7; length -= 7; - if (!(s = SearchInfostring(string, "challenge"))) - return true; - // validate the challenge - for (i = 0;i < MAX_CHALLENGES;i++) - if(challenge[i].time > 0) - if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s)) - break; - // if the challenge is not recognized, drop the packet - if (i == MAX_CHALLENGES) - return true; + if(crypto && crypto->authenticated) + { + // no need to check challenge + if(crypto_developer.integer) + { + Con_Printf("%s connection to %s is being established: client is %s@%.*s, I am %.*s@%.*s\n", + crypto->use_aes ? "Encrypted" : "Authenticated", + addressstring2, + crypto->client_idfp[0] ? crypto->client_idfp : "-", + crypto_keyfp_recommended_length, crypto->client_keyfp[0] ? crypto->client_keyfp : "-", + crypto_keyfp_recommended_length, crypto->server_idfp[0] ? crypto->server_idfp : "-", + crypto_keyfp_recommended_length, crypto->server_keyfp[0] ? crypto->server_keyfp : "-" + ); + } + } + else + { + if ((s = SearchInfostring(string, "challenge"))) + { + // validate the challenge + for (i = 0;i < MAX_CHALLENGES;i++) + if(challenge[i].time > 0) + if (!LHNETADDRESS_Compare(peeraddress, &challenge[i].address) && !strcmp(challenge[i].string, s)) + break; + // if the challenge is not recognized, drop the packet + if (i == MAX_CHALLENGES) + return true; + } + } + + if((s = SearchInfostring(string, "message"))) + Con_DPrintf("Connecting client %s sent us the message: %s\n", addressstring2, s); if(!(islocal || sv_public.integer > -2)) { @@ -2688,6 +2868,39 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat if (client->netconnection && LHNETADDRESS_Compare(peeraddress, &client->netconnection->peeraddress) == 0) { // this is a known client... + if(crypto && crypto->authenticated) + { + // reject if changing key! + if(client->netconnection->crypto.authenticated) + { + if( + strcmp(client->netconnection->crypto.client_idfp, crypto->client_idfp) + || + strcmp(client->netconnection->crypto.server_idfp, crypto->server_idfp) + || + strcmp(client->netconnection->crypto.client_keyfp, crypto->client_keyfp) + || + strcmp(client->netconnection->crypto.server_keyfp, crypto->server_keyfp) + ) + { + if (developer_extra.integer) + Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to change key of crypto.\" to %s.\n", addressstring2); + NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to change key of crypto.", peeraddress); + return true; + } + } + } + else + { + // reject if downgrading! + if(client->netconnection->crypto.authenticated) + { + if (developer_extra.integer) + Con_Printf("Datagram_ParseConnectionless: sending \"reject Attempt to downgrade crypto.\" to %s.\n", addressstring2); + NetConn_WriteString(mysocket, "\377\377\377\377reject Attempt to downgrade crypto.", peeraddress); + return true; + } + } if (client->spawned) { // client crashed and is coming back, @@ -2695,6 +2908,8 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat if (developer_extra.integer) Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", addressstring2); NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress); + if(crypto && crypto->authenticated) + Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto); SV_VM_Begin(); SV_SendServerinfo(client); SV_VM_End(); @@ -2705,6 +2920,8 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat // so we send a duplicate reply if (developer_extra.integer) Con_Printf("Datagram_ParseConnectionless: sending duplicate accept to %s.\n", addressstring2); + if(crypto && crypto->authenticated) + Crypto_ServerFinishInstance(&client->netconnection->crypto, crypto); NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress); } return true; @@ -2725,6 +2942,8 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat Con_Printf("Datagram_ParseConnectionless: sending \"accept\" to %s.\n", conn->address); NetConn_WriteString(mysocket, "\377\377\377\377accept", peeraddress); // now set up the client + if(crypto && crypto->authenticated) + Crypto_ServerFinishInstance(&conn->crypto, crypto); SV_VM_Begin(); SV_ConnectClient(clientnum, conn); SV_VM_End(); @@ -2788,7 +3007,7 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat ++s; userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_time_matching, timeval, endpos - timeval - 1); // not including the appended \0 into the HMAC - RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos); + RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false); return true; } if (length >= 42 && !memcmp(string, "srcon HMAC-MD4 CHALLENGE ", 25)) @@ -2803,7 +3022,7 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat ++s; userlevel = RCon_Authenticate(peeraddress, password, s, endpos, hmac_mdfour_challenge_matching, challenge, endpos - challenge - 1); // not including the appended \0 into the HMAC - RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos); + RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false); return true; } if (length >= 5 && !memcmp(string, "rcon ", 5)) @@ -2825,7 +3044,7 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat if (!ISWHITESPACE(password[0])) { const char *userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0); - RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos); + RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, false); } return true; } @@ -2856,7 +3075,7 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat // protocol // (this protects more modern protocols against being used for // Quake packet flood Denial Of Service attacks) - if (length >= 5 && (i = BuffBigLong(data)) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3 || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)) + if (length >= 5 && (i = BuffBigLong(data)) && (i & (~NETFLAG_LENGTH_MASK)) == (int)NETFLAG_CTL && (i & NETFLAG_LENGTH_MASK) == length && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3 || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3) && !ENCRYPTION_REQUIRED) { int c; int protocolnumber; @@ -3039,7 +3258,10 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat MSG_WriteLong(&net_message, client->colors); MSG_WriteLong(&net_message, client->frags); MSG_WriteLong(&net_message, (int)(realtime - client->connecttime)); - MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient"); + if(sv_status_privacy.integer) + MSG_WriteString(&net_message, client->netconnection ? "hidden" : "botclient"); + else + MSG_WriteString(&net_message, client->netconnection ? client->netconnection->address : "botclient"); StoreBigLong(net_message.data, NETFLAG_CTL | (net_message.cursize & NETFLAG_LENGTH_MASK)); NetConn_Write(mysocket, net_message.data, net_message.cursize, peeraddress); SZ_Clear(&net_message); @@ -3075,6 +3297,25 @@ static int NetConn_ServerParsePacket(lhnetsocket_t *mysocket, unsigned char *dat SZ_Clear(&net_message); } break; + case CCREQ_RCON: + if (developer_extra.integer) + Con_DPrintf("Datagram_ParseConnectionless: received CCREQ_RCON from %s.\n", addressstring2); + if (sv.active && !rcon_secure.integer) + { + char password[2048]; + char cmd[2048]; + char *s; + char *endpos; + const char *userlevel; + strlcpy(password, MSG_ReadString(), sizeof(password)); + strlcpy(cmd, MSG_ReadString(), sizeof(cmd)); + s = cmd; + endpos = cmd + strlen(cmd) + 1; // one behind the NUL, so adding strlen+1 will eventually reach it + userlevel = RCon_Authenticate(peeraddress, password, s, endpos, plaintext_matching, NULL, 0); + RCon_Execute(mysocket, peeraddress, addressstring2, userlevel, s, endpos, true); + return true; + } + break; default: break; } @@ -3425,6 +3666,8 @@ void NetConn_Init(void) net_message.maxsize = sizeof(net_message_buf); net_message.cursize = 0; LHNET_Init(); + if (Thread_HasThreads()) + netconn_mutex = Thread_CreateMutex(); } void NetConn_Shutdown(void) @@ -3432,5 +3675,8 @@ void NetConn_Shutdown(void) NetConn_CloseClientPorts(); NetConn_CloseServerPorts(); LHNET_Shutdown(); + if (netconn_mutex) + Thread_DestroyMutex(netconn_mutex); + netconn_mutex = NULL; }