1 | |
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2 | /* |
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3 | * static char *rcsid_loop_c = |
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4 | * "$Id: loop.C,v 1.1 2006/08/13 17:16:06 elmex Exp $"; |
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5 | */ |
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6 | |
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7 | /* |
1 | /* |
8 | CrossFire, A Multiplayer game for X-windows |
2 | CrossFire, A Multiplayer game for X-windows |
9 | |
3 | |
10 | Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team |
4 | Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team |
11 | Copyright (C) 1992 Frank Tore Johansen |
5 | Copyright (C) 1992 Frank Tore Johansen |
… | |
… | |
22 | |
16 | |
23 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License |
24 | along with this program; if not, write to the Free Software |
18 | along with this program; if not, write to the Free Software |
25 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
26 | |
20 | |
27 | The author can be reached via e-mail to crossfire-devel@real-time.com |
21 | The author can be reached via e-mail to <crossfire@schmorp.de> |
28 | */ |
22 | */ |
29 | |
23 | |
30 | /** |
24 | /** |
31 | * \file |
25 | * \file |
32 | * Main client/server loops. |
26 | * Main client/server loops. |
… | |
… | |
38 | * The reading of data is handled in ericserver.c |
32 | * The reading of data is handled in ericserver.c |
39 | */ |
33 | */ |
40 | |
34 | |
41 | |
35 | |
42 | #include <global.h> |
36 | #include <global.h> |
43 | #ifndef __CEXTRACT__ |
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44 | #include <sproto.h> |
37 | #include <sproto.h> |
45 | #include <sockproto.h> |
38 | #include <sockproto.h> |
46 | #endif |
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47 | |
39 | |
48 | #ifndef WIN32 /* ---win32 exclude unix headers */ |
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49 | #include <sys/types.h> |
40 | #include <sys/types.h> |
50 | #include <sys/time.h> |
41 | #include <sys/time.h> |
51 | #include <sys/socket.h> |
42 | #include <sys/socket.h> |
52 | #include <netinet/in.h> |
43 | #include <netinet/in.h> |
53 | #include <netdb.h> |
44 | #include <netdb.h> |
54 | #endif /* end win32 */ |
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55 | |
45 | |
56 | #ifdef HAVE_UNISTD_H |
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57 | #include <unistd.h> |
46 | #include <unistd.h> |
58 | #endif |
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59 | |
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60 | #ifdef HAVE_ARPA_INET_H |
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61 | #include <arpa/inet.h> |
47 | #include <arpa/inet.h> |
62 | #endif |
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63 | |
48 | |
64 | #include <loader.h> |
49 | #include <loader.h> |
65 | #include <newserver.h> |
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66 | |
50 | |
67 | /***************************************************************************** |
51 | /***************************************************************************** |
68 | * Start of command dispatch area. |
52 | * Start of command dispatch area. |
69 | * The commands here are protocol commands. |
53 | * The commands here are protocol commands. |
70 | ****************************************************************************/ |
54 | ****************************************************************************/ |
… | |
… | |
75 | * before player joins, and those happen after the player has joined. |
59 | * before player joins, and those happen after the player has joined. |
76 | * As such, we have function types that might be called, so |
60 | * As such, we have function types that might be called, so |
77 | * we end up having 2 tables. |
61 | * we end up having 2 tables. |
78 | */ |
62 | */ |
79 | |
63 | |
80 | typedef void (*func_uint8_int_ns) (char*, int, NewSocket *); |
64 | enum { |
81 | |
65 | PF_PLAYER = 0x01, // must have valid player |
82 | struct NsCmdMapping { |
66 | PF_IMMEDIATE = 0x02, // TODO: hack, can be executed immediately |
83 | const char *cmdname; |
67 | PF_PLAYING = 0x04, // must be in playing state |
84 | func_uint8_int_ns cmdproc; |
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85 | }; |
68 | }; |
86 | |
69 | |
87 | typedef void (*func_uint8_int_pl)(char*, int, player *); |
70 | struct pkt_type |
88 | struct PlCmdMapping { |
71 | { |
89 | const char *cmdname; |
72 | const char *name; |
90 | func_uint8_int_pl cmdproc; |
73 | void *cb; |
91 | uint8 flag; |
74 | int flags; |
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75 | |
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76 | bool may_execute (client *ns) |
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77 | { |
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78 | return (!(flags & PF_PLAYER) || ns->pl) |
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79 | && (!(flags & PF_PLAYING) || (ns->pl && ns->pl->state == ST_PLAYING)); |
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80 | } |
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81 | |
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82 | void execute (client *ns, char *data, int datalen) |
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83 | { |
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84 | //TODO: only one format |
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85 | if (flags & PF_PLAYER) |
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86 | ((void (*)(char *, int, player * ))cb)((char *)data, datalen, ns->pl); |
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87 | else |
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88 | ((void (*)(char *, int, client *))cb)((char *)data, datalen, ns); |
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89 | } |
92 | }; |
90 | }; |
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91 | |
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92 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
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93 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
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94 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
93 | |
95 | |
94 | /** |
96 | /** |
95 | * Dispatch table for the server. |
97 | * Dispatch table for the server. |
96 | * |
98 | */ |
97 | * CmdMapping is the dispatch table for the server, used in HandleClient, |
99 | static struct pkt_type packets[] = { |
98 | * which gets called when the client has input. All commands called here |
100 | {"ncom", PC(NewPlayerCmd) PF_PLAYING }, |
99 | * use the same parameter form (char* data, int len, int clientnum. |
101 | {"command", PC(PlayerCmd) PF_PLAYING }, |
100 | * We do implicit casts, because the data that is being passed is |
102 | |
101 | * unsigned (pretty much needs to be for binary data), however, most |
103 | {"examine", PC(ExamineCmd) PF_PLAYING | PF_IMMEDIATE }, |
102 | * of these treat it only as strings, so it makes things easier |
104 | {"apply", PC(ApplyCmd) PF_PLAYING | PF_IMMEDIATE }, |
103 | * to cast it here instead of a bunch of times in the function itself. |
105 | {"reply", PC(ReplyCmd) PF_IMMEDIATE }, |
104 | * flag is 1 if the player must be in the playing state to issue the |
106 | {"lookat", PC(LookAt) PF_PLAYING | PF_IMMEDIATE }, |
105 | * command, 0 if they can issue it at any time. |
107 | {"lock", PC(LockItem) PF_PLAYING | PF_IMMEDIATE }, |
106 | */ |
108 | {"mark", PC(MarkItem) PF_PLAYING | PF_IMMEDIATE }, |
107 | static struct PlCmdMapping plcommands[] = { |
109 | {"move", PC(MoveCmd) PF_PLAYING | PF_IMMEDIATE }, |
108 | { "examine", ExamineCmd, 1}, |
110 | {"ext", PC(ExtCmd) PF_IMMEDIATE }, /* CF+ */ |
109 | { "apply", ApplyCmd, 1}, |
111 | {"mapredraw", PC(MapRedrawCmd) PF_IMMEDIATE }, /* Added: phil */ |
110 | { "move", MoveCmd, 1}, |
112 | {"mapinfo", PC(MapInfoCmd) PF_IMMEDIATE }, /* CF+ */ |
111 | { "reply", ReplyCmd, 0}, |
113 | |
112 | { "command", PlayerCmd, 1}, |
114 | {"addme", SC(AddMeCmd) PF_IMMEDIATE }, |
113 | { "ncom", (func_uint8_int_pl)NewPlayerCmd, 1}, |
115 | {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */ |
114 | { "lookat", LookAt, 1}, |
116 | {"requestinfo", SC(RequestInfo) 0 }, |
115 | { "lock", (func_uint8_int_pl)LockItem, 1}, |
117 | {"setfacemode", SC(SetFaceMode) PF_IMMEDIATE }, |
116 | { "mark", (func_uint8_int_pl)MarkItem, 1}, |
118 | {"setsound", SC(SetSound) PF_IMMEDIATE }, |
117 | { "mapredraw", MapRedrawCmd, 0}, /* Added: phil */ |
119 | {"setup", SC(SetUp) PF_IMMEDIATE }, |
118 | { "mapinfo", MapInfoCmd, 2}, /* CF+ */ |
120 | {"version", SC(VersionCmd) PF_IMMEDIATE }, |
119 | { "ext", ExtCmd, 2}, /* CF+ */ |
121 | {"toggleextendedinfos", SC(ToggleExtendedInfos) PF_IMMEDIATE }, /*Added: tchize */ |
120 | { NULL, NULL, 0} /* terminator */ |
122 | {"toggleextendedtext", SC(ToggleExtendedText) PF_IMMEDIATE }, /*Added: tchize */ |
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123 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
121 | }; |
124 | }; |
122 | |
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123 | /** Face-related commands */ |
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124 | static struct NsCmdMapping nscommands[] = { |
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125 | { "addme", AddMeCmd }, |
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126 | { "askface", SendFaceCmd}, /* Added: phil */ |
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127 | { "requestinfo", RequestInfo}, |
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128 | { "setfacemode", SetFaceMode}, |
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129 | { "setsound", SetSound}, |
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130 | { "setup", SetUp}, |
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131 | { "version", VersionCmd }, |
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132 | { "toggleextendedinfos", ToggleExtendedInfos}, /*Added: tchize*/ |
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133 | { "toggleextendedtext", ToggleExtendedText}, /*Added: tchize*/ |
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134 | { "asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies)*/ |
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135 | { NULL, NULL} /* terminator (I, II & III)*/ |
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136 | }; |
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137 | |
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138 | /** |
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139 | * RequestInfo is sort of a meta command. There is some specific |
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140 | * request of information, but we call other functions to provide |
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141 | * that information. |
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142 | */ |
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143 | void RequestInfo(char *buf, int len, NewSocket *ns) |
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144 | { |
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145 | char *params=NULL, *cp; |
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146 | /* No match */ |
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147 | char bigbuf[MAX_BUF]; |
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148 | int slen; |
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149 | |
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150 | /* Set up replyinfo before we modify any of the buffers - this is used |
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151 | * if we don't find a match. |
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152 | */ |
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153 | strcpy(bigbuf,"replyinfo "); |
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154 | slen = strlen(bigbuf); |
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155 | safe_strcat(bigbuf, buf, &slen, MAX_BUF); |
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156 | |
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157 | /* find the first space, make it null, and update the |
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158 | * params pointer. |
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159 | */ |
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160 | for (cp = buf; *cp != '\0'; cp++) |
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161 | if (*cp==' ') { |
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162 | *cp = '\0'; |
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163 | params = cp + 1; |
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164 | break; |
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165 | } |
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166 | if (!strcmp(buf, "image_info")) send_image_info(ns, params); |
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167 | else if (!strcmp(buf,"image_sums")) send_image_sums(ns, params); |
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168 | else if (!strcmp(buf,"skill_info")) send_skill_info(ns, params); |
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169 | else if (!strcmp(buf,"spell_paths")) send_spell_paths(ns, params); |
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170 | else Write_String_To_Socket(ns, bigbuf, len); |
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171 | } |
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172 | |
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173 | /** |
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174 | * Handles old socket format. |
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175 | */ |
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176 | void Handle_Oldsocket(NewSocket *ns) |
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177 | { |
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178 | int stat,i; |
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179 | CommFunc command; |
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180 | char buf[MAX_BUF],*cp; |
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181 | object ob; |
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182 | player pl; |
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183 | |
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184 | /* This is not the most efficient block, but keeps the code simpler - |
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185 | * we basically read a byte at a time until we get a newline, error, |
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186 | * or no more characters to read. |
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187 | */ |
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188 | do { |
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189 | /* hack to disable old socket mode without creating too many conflicts */ |
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190 | if (1 || ns->inbuf.len >= MAXSOCKBUF-1) { |
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191 | ns->status = Ns_Dead; |
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192 | LOG(llevDebug, "Old input socket sent too much data without newline\n"); |
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193 | return; |
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194 | } |
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195 | #ifdef WIN32 /* ***win32: change oldsocket read() to recv() */ |
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196 | stat = recv(ns->fd, ns->inbuf.buf + ns->inbuf.len, 1,0); |
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197 | |
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198 | if (stat==-1 && WSAGetLastError() !=WSAEWOULDBLOCK) { |
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199 | #else |
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200 | do { |
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201 | stat = read(ns->fd, ns->inbuf.buf + ns->inbuf.len, 1); |
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202 | } while ((stat<0) && (errno == EINTR)); |
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203 | |
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204 | if (stat<0 && errno != EAGAIN && errno !=EWOULDBLOCK) { |
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205 | #endif |
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206 | LOG(llevError, "Cannot read from socket: %s\n", strerror_local(errno)); |
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207 | ns->status = Ns_Dead; |
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208 | return; |
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209 | } |
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210 | if (stat == 0) return; |
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211 | } while (ns->inbuf.buf[ns->inbuf.len++]!='\n'); |
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212 | |
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213 | ns->inbuf.buf[ns->inbuf.len]=0; |
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214 | |
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215 | cp = strchr((const char*)ns->inbuf.buf, ' '); |
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216 | if (cp) { |
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217 | /* Replace the space with a null, skip any more spaces */ |
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218 | *cp++=0; |
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219 | while (isspace(*cp)) cp++; |
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220 | } |
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221 | |
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222 | /* Strip off all spaces and control characters from end of line */ |
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223 | for (i=ns->inbuf.len-1; i>=0; i--) { |
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224 | if (ns->inbuf.buf[i]<=32) ns->inbuf.buf[i]=0; |
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225 | else break; |
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226 | } |
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227 | ns->inbuf.len=0; /* reset for next read */ |
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228 | |
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229 | /* If just a return, don't do anything */ |
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230 | if (ns->inbuf.buf[0] == 0) return; |
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231 | if (!strcasecmp((const char*)ns->inbuf.buf,"quit")) { |
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232 | ns->status = Ns_Dead; |
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233 | return; |
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234 | } |
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235 | if (!strcasecmp((const char*)ns->inbuf.buf, "listen")) { |
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236 | if (cp) { |
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237 | char *buf="Socket switched to listen mode\n"; |
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238 | |
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239 | free(ns->comment); |
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240 | ns->comment = strdup_local(cp); |
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241 | ns->old_mode = Old_Listen; |
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242 | cs_write_string(ns, buf, strlen(buf)); |
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243 | } else { |
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244 | char *buf="Need to supply a comment/url to listen\n"; |
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245 | cs_write_string(ns, buf, strlen(buf)); |
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246 | } |
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247 | return; |
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248 | } |
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249 | if (!strcasecmp((const char*)ns->inbuf.buf, "name")) { |
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250 | char *cp1=NULL; |
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251 | if (cp) cp1= strchr(cp, ' '); |
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252 | if (cp1) { |
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253 | *cp1++ = 0; |
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254 | while (isspace(*cp1)) cp1++; |
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255 | } |
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256 | if (!cp || !cp1) { |
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257 | char *buf="Need to provide a name/password to name\n"; |
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258 | cs_write_string(ns, buf, strlen(buf)); |
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259 | return; |
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260 | } |
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261 | |
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262 | if (verify_player(cp, cp1)==0) { |
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263 | char *buf="Welcome back\n"; |
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264 | free(ns->comment); |
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265 | ns->comment = strdup_local(cp); |
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266 | ns->old_mode = Old_Player; |
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267 | cs_write_string(ns, buf, strlen(buf)); |
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268 | } |
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269 | else if (verify_player(cp, cp1)==2) { |
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270 | ns->password_fails++; |
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271 | if (ns->password_fails >= MAX_PASSWORD_FAILURES) { |
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272 | char *buf="You failed to log in too many times, you will now be kicked.\n"; |
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273 | LOG(llevInfo, "A player connecting from %s in oldsocketmode has been dropped for password failure\n", |
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274 | ns->host); |
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275 | cs_write_string(ns, buf, strlen(buf)); |
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276 | ns->status = Ns_Dead; |
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277 | } |
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278 | else { |
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279 | char *buf="Could not login you in. Check your name and password.\n"; |
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280 | cs_write_string(ns, buf, strlen(buf)); |
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281 | } |
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282 | } |
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283 | else { |
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284 | char *buf="Could not login you in. Check your name and password.\n"; |
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285 | cs_write_string(ns, buf, strlen(buf)); |
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286 | } |
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287 | return; |
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288 | } |
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289 | |
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290 | command = find_oldsocket_command((char*)ns->inbuf.buf); |
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291 | if (!command && ns->old_mode==Old_Player) { |
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292 | command = find_oldsocket_command2((char*)ns->inbuf.buf); |
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293 | } |
|
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294 | if (!command) { |
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295 | snprintf(buf, sizeof(buf), "Could not find command: %s\n", ns->inbuf.buf); |
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296 | cs_write_string(ns, buf, strlen(buf)); |
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297 | return; |
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298 | } |
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299 | |
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300 | /* This is a bit of a hack, but works. Basically, we make some |
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301 | * fake object and player pointers and give at it. |
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302 | * This works as long as the functions we are calling don't need |
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303 | * to do anything to the object structure (ie, they are only |
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304 | * outputting information and not actually updating anything much.) |
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305 | */ |
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306 | ob.contr = &pl; |
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307 | pl.ob = &ob; |
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308 | ob.type = PLAYER; |
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309 | pl.listening = 10; |
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310 | pl.socket = *ns; |
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311 | pl.outputs_count = 1; |
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312 | ob.name = ns->comment; |
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313 | |
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314 | command(&ob, cp); |
|
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315 | } |
|
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316 | |
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317 | |
125 | |
318 | /** |
126 | /** |
319 | * Handle client input. |
127 | * Handle client input. |
320 | * |
128 | * |
321 | * HandleClient is actually not named really well - we only get here once |
129 | * HandleClient is actually not named really well - we only get here once |
322 | * there is input, so we don't do exception or other stuff here. |
130 | * there is input, so we don't do exception or other stuff here. |
323 | * sock is the output socket information. pl is the player associated |
131 | * sock is the output socket information. pl is the player associated |
324 | * with this socket, null if no player (one of the init_sockets for just |
132 | * with this socket, null if no player (one of the init_sockets for just |
325 | * starting a connection) |
133 | * starting a connection) |
326 | */ |
134 | */ |
327 | |
135 | void |
328 | void HandleClient(NewSocket *ns, player *pl) |
136 | HandleClient (client *ns, player *pl) |
329 | { |
137 | { |
330 | int len=0,i,cnt; |
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331 | char *data; |
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332 | |
|
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333 | /* Loop through this - maybe we have several complete packets here. */ |
138 | /* Loop through this - maybe we have several complete packets here. */ |
334 | // limit to a few commands only, though, as to not monopolise the server |
139 | // limit to a few commands only, though, as to not monopolise the server |
335 | for (cnt = 16; cnt--; ) { |
140 | for (int repeat = 16; repeat--;) |
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141 | { |
336 | /* If it is a player, and they don't have any speed left, we |
142 | /* If it is a player, and they don't have any speed left, we |
337 | * return, and will read in the data when they do have time. |
143 | * return, and will read in the data when they do have time. |
338 | */ |
144 | */ |
339 | if (pl && pl->state==ST_PLAYING && pl->ob != NULL && pl->ob->speed_left < 0) { |
145 | if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0) |
340 | return; |
146 | return; |
341 | } |
|
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342 | |
|
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343 | if (ns->status == Ns_Old) { |
|
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344 | Handle_Oldsocket(ns); |
|
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345 | return; |
|
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346 | } |
|
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347 | i=SockList_ReadPacket(ns->fd, &ns->inbuf, MAXSOCKBUF-1); |
|
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348 | /* Special hack - let the user switch to old mode if in the Ns_Add |
|
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349 | * phase. Don't demand they add in the special length bytes |
|
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350 | */ |
|
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351 | if (ns->status == Ns_Add) { |
|
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352 | if (!strncasecmp((const char*)ns->inbuf.buf,"oldsocketmode", 13)) { |
|
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353 | ns->status = Ns_Old; |
|
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354 | ns->inbuf.len=0; |
|
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355 | cs_write_string(ns, "Switched to old socket mode\n", 28); |
|
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356 | LOG(llevDebug,"Switched socket to old socket mode\n"); |
|
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357 | return; |
|
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358 | } |
|
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359 | } |
|
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360 | |
147 | |
361 | if (i<0) { |
148 | int pkt_len = ns->read_packet (); |
362 | #ifdef ESRV_DEBUG |
149 | |
363 | LOG(llevDebug,"HandleClient: Read error on connection player %s\n", (pl?pl->ob->name:"None")); |
150 | if (pkt_len < 0) |
364 | #endif |
151 | { |
|
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152 | LOG (llevError, "read error on player %s\n", &pl->ob->name); |
365 | /* Caller will take care of cleaning this up */ |
153 | /* Caller will take care of cleaning this up */ |
366 | ns->status =Ns_Dead; |
154 | ns->status = Ns_Dead; |
367 | return; |
155 | return; |
368 | } |
156 | } |
|
|
157 | else if (pkt_len == 0) |
369 | /* Still dont have a full packet */ |
158 | /* Still dont have a full packet */ |
370 | if (i==0) return; |
159 | return; |
371 | |
160 | |
372 | // //D//TODO//temporarily log long commands |
|
|
373 | // if (ns->inbuf.len >= 40 && pl && pl->ob) |
|
|
374 | // LOG (llevDebug, "HandleClient: long comamnd from <%s,%s> %d<%s>\n", pl->ob->name, ns->host, ns->inbuf.len, ns->inbuf.buf + 2); |
|
|
375 | |
|
|
376 | /* First, break out beginning word. There are at least |
161 | /* First, break out beginning word. There are at least |
377 | * a few commands that do not have any paremeters. If |
162 | * a few commands that do not have any paremeters. If |
378 | * we get such a command, don't worry about trying |
163 | * we get such a command, don't worry about trying |
379 | * to break it up. |
164 | * to break it up. |
380 | */ |
165 | */ |
381 | data = (char *)strchr((char*)ns->inbuf.buf +2, ' '); |
166 | int datalen; |
382 | if (data) { |
167 | char *data = strchr ((char *)ns->inbuf + 2, ' '); |
383 | *data='\0'; |
|
|
384 | data++; |
|
|
385 | len = ns->inbuf.len - (data - (char*)ns->inbuf.buf); |
|
|
386 | } |
|
|
387 | else len=0; |
|
|
388 | |
168 | |
|
|
169 | if (data) |
|
|
170 | { |
|
|
171 | *data++ = 0; |
|
|
172 | datalen = pkt_len - (data - (char *)ns->inbuf); |
|
|
173 | } |
|
|
174 | else |
|
|
175 | { |
|
|
176 | data = (char *)ns->inbuf + 2; // better read garbage than segfault |
|
|
177 | datalen = 0; |
|
|
178 | } |
|
|
179 | |
389 | ns->inbuf.buf[ns->inbuf.len]='\0'; /* Terminate buffer - useful for string data */ |
180 | ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
390 | for (i=0; nscommands[i].cmdname !=NULL; i++) { |
181 | |
391 | if (strcmp((char*)ns->inbuf.buf+2,nscommands[i].cmdname)==0) { |
182 | for (pkt_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
392 | nscommands[i].cmdproc((char*)data,len,ns); |
183 | if (!strcmp ((char *)ns->inbuf + 2, pkt->name)) |
393 | ns->inbuf.len=0; |
184 | { |
394 | return;//D// not doing this causes random memory corruption |
185 | if (pkt->may_execute (ns)) |
395 | goto next_packet; |
186 | { |
396 | } |
187 | pkt->execute (ns, data, datalen); |
397 | } |
188 | ns->skip_packet (pkt_len); |
398 | /* Player must be in the playing state or the flag on the |
|
|
399 | * the command must be zero for the user to use the command - |
|
|
400 | * otherwise, a player cam save, be in the play_again state, and |
|
|
401 | * the map they were on gets swapped out, yet things that try to look |
|
|
402 | * at the map causes a crash. If the command is valid, but |
|
|
403 | * one they can't use, we still swallow it up. |
|
|
404 | */ |
|
|
405 | if (pl) for (i=0; plcommands[i].cmdname !=NULL; i++) { |
|
|
406 | if (strcmp((char*)ns->inbuf.buf+2,plcommands[i].cmdname)==0) { |
|
|
407 | if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) |
|
|
408 | plcommands[i].cmdproc((char*)data,len,pl); |
|
|
409 | ns->inbuf.len=0; |
|
|
410 | //D// not doing this causes random memory corruption |
189 | //D//TODO not doing this causes random memory corruption |
411 | if (plcommands[i].flag & 2) |
190 | if (pkt->flags & PF_IMMEDIATE) |
412 | goto next_packet; |
191 | goto next_packet; |
413 | return; |
192 | return; |
414 | } |
193 | } |
415 | } |
194 | } |
|
|
195 | |
416 | /* If we get here, we didn't find a valid command. Logging |
196 | /* If we get here, we didn't find a valid command. Logging |
417 | * this might be questionable, because a broken client/malicious |
197 | * this might be questionable, because a broken client/malicious |
418 | * user could certainly send a whole bunch of invalid commands. |
198 | * user could certainly send a whole bunch of invalid commands. |
419 | */ |
199 | */ |
420 | LOG(llevDebug,"Bad command from client (%s)\n",ns->inbuf.buf+2); |
200 | LOG (llevDebug, "Bad command from client (%s)\n", ns->inbuf + 2); |
|
|
201 | ns->skip_packet (pkt_len); |
421 | next_packet: |
202 | next_packet: |
422 | ; |
203 | ; |
423 | } |
204 | } |
424 | } |
205 | } |
425 | |
206 | |
|
|
207 | void |
|
|
208 | flush_sockets (void) |
|
|
209 | { |
|
|
210 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
|
|
211 | if ((*i)->status != Ns_Dead) |
|
|
212 | (*i)->flush (); |
|
|
213 | } |
426 | |
214 | |
427 | /***************************************************************************** |
|
|
428 | * |
|
|
429 | * Low level socket looping - select calls and watchdog udp packet |
|
|
430 | * sending. |
|
|
431 | * |
|
|
432 | ******************************************************************************/ |
|
|
433 | |
|
|
434 | #ifdef WATCHDOG |
|
|
435 | /** |
215 | /** |
436 | * Tell watchdog that we are still alive |
|
|
437 | * |
|
|
438 | * I put the function here since we should hopefully already be getting |
|
|
439 | * all the needed include files for socket support |
|
|
440 | */ |
|
|
441 | |
|
|
442 | void watchdog(void) |
|
|
443 | { |
|
|
444 | static int fd=-1; |
|
|
445 | static struct sockaddr_in insock; |
|
|
446 | |
|
|
447 | if (fd==-1) |
|
|
448 | { |
|
|
449 | struct protoent *protoent; |
|
|
450 | |
|
|
451 | if ((protoent=getprotobyname("udp"))==NULL || |
|
|
452 | (fd=socket(PF_INET, SOCK_DGRAM, protoent->p_proto))==-1) |
|
|
453 | { |
|
|
454 | return; |
|
|
455 | } |
|
|
456 | insock.sin_family=AF_INET; |
|
|
457 | insock.sin_port=htons((unsigned short)13325); |
|
|
458 | insock.sin_addr.s_addr=inet_addr("127.0.0.1"); |
|
|
459 | } |
|
|
460 | sendto(fd,(void *)&fd,1,0,(struct sockaddr *)&insock,sizeof(insock)); |
|
|
461 | } |
|
|
462 | #endif |
|
|
463 | |
|
|
464 | extern unsigned long todtick; |
|
|
465 | |
|
|
466 | /** Waits for new connection */ |
|
|
467 | static void block_until_new_connection(void) |
|
|
468 | { |
|
|
469 | |
|
|
470 | struct timeval Timeout; |
|
|
471 | fd_set readfs; |
|
|
472 | int cycles; |
|
|
473 | |
|
|
474 | LOG(llevInfo, "Waiting for connections...\n"); |
|
|
475 | |
|
|
476 | cycles=1; |
|
|
477 | do { |
|
|
478 | /* Every minutes is a bit often for updates - especially if nothing is going |
|
|
479 | * on. This slows it down to every 6 minutes. |
|
|
480 | */ |
|
|
481 | cycles++; |
|
|
482 | if (cycles%2 == 0) |
|
|
483 | tick_the_clock(); |
|
|
484 | |
|
|
485 | FD_ZERO(&readfs); |
|
|
486 | FD_SET((uint32)init_sockets[0].fd, &readfs); |
|
|
487 | |
|
|
488 | /* If fastclock is set, we need to seriously slow down the updates |
|
|
489 | * to the metaserver as well as watchdog. Do same for flush_old_maps() - |
|
|
490 | * that is time sensitive, so there is no good reason to call it 2000 times |
|
|
491 | * a second. |
|
|
492 | */ |
|
|
493 | if (settings.fastclock > 0) { |
|
|
494 | #ifdef WATCHDOG |
|
|
495 | if (cycles % 120000 == 0) { |
|
|
496 | watchdog(); |
|
|
497 | flush_old_maps(); |
|
|
498 | } |
|
|
499 | #endif |
|
|
500 | if (cycles == 720000) { |
|
|
501 | metaserver_update(); |
|
|
502 | cycles=1; |
|
|
503 | } |
|
|
504 | Timeout.tv_sec=0; |
|
|
505 | Timeout.tv_usec=50; |
|
|
506 | } else { |
|
|
507 | Timeout.tv_sec=60; |
|
|
508 | Timeout.tv_usec=0; |
|
|
509 | if (cycles == 7) { |
|
|
510 | metaserver_update(); |
|
|
511 | cycles=1; |
|
|
512 | } |
|
|
513 | flush_old_maps(); |
|
|
514 | } |
|
|
515 | } |
|
|
516 | while (select(socket_info.max_filedescriptor, &readfs, NULL, NULL, &Timeout)==0); |
|
|
517 | |
|
|
518 | reset_sleep(); /* Or the game would go too fast */ |
|
|
519 | } |
|
|
520 | |
|
|
521 | void flush_sockets(void) |
|
|
522 | { |
|
|
523 | player *pl; |
|
|
524 | |
|
|
525 | for (pl = first_player; pl != NULL; pl = pl->next) |
|
|
526 | if (pl->socket.status != Ns_Dead) |
|
|
527 | Socket_Flush (&pl->socket); |
|
|
528 | } |
|
|
529 | |
|
|
530 | /** |
|
|
531 | * This checks the sockets for input and exceptions, does the right thing. |
216 | * This checks the sockets for input, does the right thing. |
532 | * |
217 | * |
533 | * A bit of this code is grabbed out of socket.c |
218 | * A bit of this code is grabbed out of socket.c |
534 | * There are 2 lists we need to look through - init_sockets is a list |
219 | * There are 2 lists we need to look through - init_sockets is a list |
535 | * |
220 | * |
536 | */ |
221 | */ |
|
|
222 | void |
537 | void doeric_server(void) |
223 | doeric_server (void) |
538 | { |
224 | { |
539 | int i, pollret; |
225 | int i, pollret; |
540 | fd_set tmp_read, tmp_exceptions, tmp_write; |
226 | fd_set tmp_read; |
541 | struct sockaddr_in addr; |
227 | struct sockaddr_in addr; |
542 | socklen_t addrlen=sizeof(struct sockaddr); |
228 | socklen_t addrlen = sizeof (struct sockaddr); |
543 | player *pl, *next; |
229 | player *pl, *next; |
|
|
230 | int maxfd = 0; |
544 | |
231 | |
545 | #ifdef CS_LOGSTATS |
232 | #ifdef CS_LOGSTATS |
546 | if ((time(NULL)-cst_lst.time_start)>=CS_LOGTIME) |
233 | if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) |
547 | write_cs_stats(); |
234 | write_cs_stats (); |
548 | #endif |
235 | #endif |
549 | |
236 | |
550 | FD_ZERO(&tmp_read); |
|
|
551 | FD_ZERO(&tmp_write); |
|
|
552 | FD_ZERO(&tmp_exceptions); |
|
|
553 | |
|
|
554 | for(i=0;i<socket_info.allocated_sockets;i++) { |
|
|
555 | if (init_sockets[i].status == Ns_Dead) { |
|
|
556 | free_newsocket(&init_sockets[i]); |
|
|
557 | init_sockets[i].status = Ns_Avail; |
|
|
558 | socket_info.nconns--; |
|
|
559 | } else if (init_sockets[i].status != Ns_Avail){ |
|
|
560 | FD_SET((uint32)init_sockets[i].fd, &tmp_read); |
|
|
561 | FD_SET((uint32)init_sockets[i].fd, &tmp_write); |
|
|
562 | FD_SET((uint32)init_sockets[i].fd, &tmp_exceptions); |
|
|
563 | } |
|
|
564 | } |
|
|
565 | |
|
|
566 | /* Go through the players. Let the loop set the next pl value, |
237 | /* Go through the players. Let the loop set the next pl value, |
567 | * since we may remove some |
238 | * since we may remove some |
568 | */ |
239 | */ |
|
|
240 | //TODO: must be handled cleanly elsewhere |
569 | for (pl=first_player; pl!=NULL; ) { |
241 | for (pl = first_player; pl; ) |
570 | if (pl->socket.status == Ns_Dead) { |
242 | { |
571 | player *npl=pl->next; |
243 | player *npl = pl->next; |
572 | |
244 | |
|
|
245 | //TODO: must be handled cleanly elsewhere |
|
|
246 | if (pl->socket->status == Ns_Dead) |
|
|
247 | { |
573 | save_player(pl->ob, 0); |
248 | save_player (pl->ob, 0); |
|
|
249 | |
574 | if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) { |
250 | if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) |
|
|
251 | { |
575 | terminate_all_pets(pl->ob); |
252 | terminate_all_pets (pl->ob); |
576 | remove_ob(pl->ob); |
253 | pl->ob->remove (); |
|
|
254 | } |
|
|
255 | |
|
|
256 | leave (pl, 1); |
|
|
257 | final_free_player (pl); |
|
|
258 | } |
|
|
259 | |
|
|
260 | pl = npl; |
577 | } |
261 | } |
578 | leave(pl,1); |
262 | |
579 | final_free_player(pl); |
263 | FD_ZERO (&tmp_read); |
580 | pl=npl; |
264 | |
581 | } |
265 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ) |
582 | else { |
|
|
583 | FD_SET((uint32)pl->socket.fd, &tmp_read); |
|
|
584 | FD_SET((uint32)pl->socket.fd, &tmp_write); |
|
|
585 | FD_SET((uint32)pl->socket.fd, &tmp_exceptions); |
|
|
586 | pl=pl->next; |
|
|
587 | } |
|
|
588 | } |
266 | { |
|
|
267 | client *s = *i; |
589 | |
268 | |
590 | #if 0 |
269 | if (s->status == Ns_Dead) |
591 | // the event system and plugins require the server ti run at all times. |
270 | { |
592 | // since its primarily cf.schmorp.de we are interested in, and |
271 | clients.erase (i); |
593 | // that is supposed to run all the time anyway, its globally disabled |
272 | delete s; |
594 | // until we can use Event. |
273 | } |
595 | if (socket_info.nconns==1 && first_player==NULL) |
274 | else |
596 | block_until_new_connection(); |
275 | { |
597 | #endif |
276 | if (s->fd > maxfd) maxfd = s->fd; |
598 | |
277 | |
599 | /* Reset timeout each time, since some OS's will change the values on |
278 | FD_SET (s->fd, &tmp_read); |
600 | * the return from select. |
279 | |
601 | */ |
280 | ++i; |
602 | socket_info.timeout.tv_sec = 0; |
281 | } |
|
|
282 | } |
|
|
283 | |
|
|
284 | struct timeval timeout; |
|
|
285 | |
|
|
286 | timeout.tv_sec = 0; |
603 | socket_info.timeout.tv_usec = 0; |
287 | timeout.tv_usec = 0; |
604 | |
288 | |
605 | pollret= select(socket_info.max_filedescriptor, &tmp_read, &tmp_write, |
289 | pollret = select (maxfd + 1, |
606 | &tmp_exceptions, &socket_info.timeout); |
290 | &tmp_read, 0, 0, |
|
|
291 | &timeout); |
607 | |
292 | |
608 | if (pollret==-1) { |
293 | if (pollret == -1) |
|
|
294 | { |
609 | LOG(llevError, "select failed: %s\n", strerror_local(errno)); |
295 | LOG (llevError, "select failed: %s\n", strerror (errno)); |
610 | return; |
296 | return; |
611 | } |
297 | } |
612 | |
298 | |
613 | /* We need to do some of the processing below regardless */ |
299 | /* We need to do some of the processing below regardless */ |
614 | /* if (!pollret) return;*/ |
|
|
615 | |
300 | |
616 | /* Following adds a new connection */ |
|
|
617 | if (pollret && FD_ISSET(init_sockets[0].fd, &tmp_read)) { |
|
|
618 | int newsocknum=0; |
|
|
619 | |
|
|
620 | #ifdef ESRV_DEBUG |
|
|
621 | LOG(llevDebug,"doeric_server: New Connection\n"); |
|
|
622 | #endif |
|
|
623 | /* If this is the case, all sockets currently in used */ |
|
|
624 | if (socket_info.allocated_sockets <= socket_info.nconns) { |
|
|
625 | init_sockets = (NewSocket *) realloc(init_sockets,sizeof(NewSocket)*(socket_info.nconns+1)); |
|
|
626 | if (!init_sockets) fatal(OUT_OF_MEMORY); |
|
|
627 | newsocknum = socket_info.allocated_sockets; |
|
|
628 | socket_info.allocated_sockets++; |
|
|
629 | init_sockets[newsocknum].faces_sent_len = nrofpixmaps; |
|
|
630 | init_sockets[newsocknum].faces_sent = (uint8*) malloc(nrofpixmaps*sizeof(*init_sockets[newsocknum].faces_sent)); |
|
|
631 | if (!init_sockets[newsocknum].faces_sent) fatal(OUT_OF_MEMORY); |
|
|
632 | init_sockets[newsocknum].status = Ns_Avail; |
|
|
633 | } |
|
|
634 | else { |
|
|
635 | int j; |
|
|
636 | |
|
|
637 | for (j=1; j<socket_info.allocated_sockets; j++) |
|
|
638 | if (init_sockets[j].status == Ns_Avail) { |
|
|
639 | newsocknum=j; |
|
|
640 | break; |
|
|
641 | } |
|
|
642 | } |
|
|
643 | init_sockets[newsocknum].fd=accept(init_sockets[0].fd, (struct sockaddr *)&addr, &addrlen); |
|
|
644 | if (init_sockets[newsocknum].fd==-1) { |
|
|
645 | LOG(llevError, "accept failed: %s\n", strerror_local(errno)); |
|
|
646 | } |
|
|
647 | else { |
|
|
648 | char buf[MAX_BUF]; |
|
|
649 | long ip; |
|
|
650 | NewSocket *ns; |
|
|
651 | |
|
|
652 | ns = &init_sockets[newsocknum]; |
|
|
653 | |
|
|
654 | ip = ntohl(addr.sin_addr.s_addr); |
|
|
655 | sprintf(buf, "%ld.%ld.%ld.%ld", (ip>>24)&255, (ip>>16)&255, (ip>>8)&255, ip&255); |
|
|
656 | |
|
|
657 | if (checkbanned(NULL, buf)) { |
|
|
658 | LOG(llevInfo, "Banned host tried to connect: [%s]\n", buf); |
|
|
659 | close(init_sockets[newsocknum].fd); |
|
|
660 | init_sockets[newsocknum].fd = -1; |
|
|
661 | } |
|
|
662 | else { |
|
|
663 | InitConnection(ns, buf); |
|
|
664 | socket_info.nconns++; |
|
|
665 | } |
|
|
666 | } |
|
|
667 | } |
|
|
668 | |
|
|
669 | /* Check for any exceptions/input on the sockets */ |
301 | /* Check for any input on the sockets */ |
670 | if (pollret) for(i=1;i<socket_info.allocated_sockets;i++) { |
302 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
671 | if (init_sockets[i].status == Ns_Avail) continue; |
|
|
672 | if (FD_ISSET(init_sockets[i].fd,&tmp_exceptions)) { |
|
|
673 | free_newsocket(&init_sockets[i]); |
|
|
674 | init_sockets[i].status = Ns_Avail; |
|
|
675 | socket_info.nconns--; |
|
|
676 | continue; |
|
|
677 | } |
|
|
678 | if (FD_ISSET(init_sockets[i].fd, &tmp_read)) { |
|
|
679 | HandleClient(&init_sockets[i], NULL); |
|
|
680 | } |
|
|
681 | if (FD_ISSET(init_sockets[i].fd, &tmp_write)) { |
|
|
682 | init_sockets[i].can_write=1; |
|
|
683 | } |
|
|
684 | } |
303 | { |
|
|
304 | client *s = *i; |
|
|
305 | player *pl = s->pl; |
685 | |
306 | |
686 | /* This does roughly the same thing, but for the players now */ |
307 | //TODO: disassociate handleclient from socket readin |
687 | for (pl=first_player; pl!=NULL; pl=next) { |
308 | if (s->inbuf_len || FD_ISSET (s->fd, &tmp_read)) |
688 | |
|
|
689 | next=pl->next; |
|
|
690 | if (pl->socket.status==Ns_Dead) continue; |
|
|
691 | |
|
|
692 | if (FD_ISSET(pl->socket.fd,&tmp_write)) { |
|
|
693 | if (!pl->socket.can_write) { |
|
|
694 | #if 0 |
|
|
695 | LOG(llevDebug,"Player %s socket now write enabled\n", pl->ob->name); |
|
|
696 | #endif |
|
|
697 | pl->socket.can_write=1; |
|
|
698 | write_socket_buffer(&pl->socket); |
|
|
699 | } |
|
|
700 | /* if we get an error on the write_socket buffer, no reason to |
|
|
701 | * continue on this socket. |
|
|
702 | */ |
|
|
703 | if (pl->socket.status==Ns_Dead) continue; |
|
|
704 | } |
|
|
705 | else pl->socket.can_write=0; |
|
|
706 | |
|
|
707 | if (FD_ISSET(pl->socket.fd,&tmp_exceptions)) { |
|
|
708 | save_player(pl->ob, 0); |
|
|
709 | if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) { |
|
|
710 | terminate_all_pets(pl->ob); |
|
|
711 | remove_ob(pl->ob); |
|
|
712 | } |
|
|
713 | leave(pl,1); |
|
|
714 | final_free_player(pl); |
|
|
715 | } |
|
|
716 | else { |
|
|
717 | HandleClient(&pl->socket, pl); |
309 | HandleClient (s, pl); |
718 | /* If the player has left the game, then the socket status |
|
|
719 | * will be set to this be the leave function. We don't |
|
|
720 | * need to call leave again, as it has already been called |
|
|
721 | * once. |
|
|
722 | */ |
|
|
723 | if (pl->socket.status==Ns_Dead) { |
|
|
724 | save_player(pl->ob, 0); |
|
|
725 | if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) { |
|
|
726 | terminate_all_pets(pl->ob); |
|
|
727 | remove_ob(pl->ob); |
|
|
728 | } |
|
|
729 | leave(pl,1); |
|
|
730 | final_free_player(pl); |
|
|
731 | } else { |
|
|
732 | |
310 | |
|
|
311 | //TODO: should not be done here, either |
|
|
312 | if (s->status != Ns_Dead && pl) |
|
|
313 | { |
733 | /* Update the players stats once per tick. More efficient than |
314 | /* Update the players stats once per tick. More efficient than |
734 | * sending them whenever they change, and probably just as useful |
315 | * sending them whenever they change, and probably just as useful |
735 | */ |
316 | */ |
736 | esrv_update_stats(pl); |
317 | esrv_update_stats (pl); |
737 | if (pl->last_weight != -1 && pl->last_weight != WEIGHT(pl->ob)) { |
318 | if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob)) |
|
|
319 | { |
738 | esrv_update_item(UPD_WEIGHT, pl->ob, pl->ob); |
320 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
739 | if(pl->last_weight != WEIGHT(pl->ob)) |
321 | if (pl->last_weight != WEIGHT (pl->ob)) |
740 | LOG(llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", (unsigned long)pl->last_weight, WEIGHT(pl->ob)); |
322 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
741 | } |
323 | (unsigned long) pl->last_weight, WEIGHT (pl->ob)); |
|
|
324 | } |
|
|
325 | |
742 | /* draw_client_map does sanity checking that map is |
326 | /* draw_client_map does sanity checking that map is |
743 | * valid, so don't do it here. |
327 | * valid, so don't do it here. |
744 | */ |
328 | */ |
745 | draw_client_map(pl->ob); |
329 | draw_client_map (pl->ob); |
746 | if (pl->socket.update_look) esrv_draw_look(pl->ob); |
330 | if (s->update_look) |
747 | } |
331 | esrv_draw_look (pl->ob); |
748 | } |
332 | } |
749 | } |
333 | } |
750 | } |
334 | } |
|
|
335 | |