1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | |
3 | * |
|
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4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team |
5 | * Copyright (©) 2002-2003,2007 Mark Wedel & The Crossfire Development Team |
5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | |
7 | * |
7 | This program is free software; you can redistribute it and/or modify |
8 | * Deliantra is free software: you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. |
11 | * (at your option) any later version. |
11 | |
12 | * |
12 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
16 | |
17 | * |
17 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * |
20 | |
21 | * The authors can be reached via e-mail to <support@deliantra.net> |
21 | The author can be reached via e-mail to <crossfire@schmorp.de> |
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22 | */ |
22 | */ |
23 | |
23 | |
24 | /** |
24 | /** |
25 | * \file |
25 | * \file |
26 | * Main client/server loops. |
26 | * Main client/server loops. |
27 | * |
27 | * |
28 | * \date 2003-12-02 |
28 | * \date 2003-12-02 |
29 | * |
29 | * |
30 | * loop.c mainly deals with initialization and higher level socket |
30 | * loop.c mainly deals with initialization and higher level socket |
31 | * maintenance (checking for lost connections and if data has arrived.) |
31 | * maintanance (checking for lost connections and if data has arrived.) |
32 | * The reading of data is handled in ericserver.c |
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33 | */ |
32 | */ |
34 | |
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35 | |
33 | |
36 | #include <global.h> |
34 | #include <global.h> |
37 | #include <sproto.h> |
35 | #include <sproto.h> |
38 | #include <sockproto.h> |
36 | #include <sockproto.h> |
39 | |
37 | |
… | |
… | |
41 | #include <sys/time.h> |
39 | #include <sys/time.h> |
42 | #include <sys/socket.h> |
40 | #include <sys/socket.h> |
43 | #include <netinet/in.h> |
41 | #include <netinet/in.h> |
44 | #include <netdb.h> |
42 | #include <netdb.h> |
45 | |
43 | |
46 | #ifdef HAVE_UNISTD_H |
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47 | # include <unistd.h> |
44 | #include <unistd.h> |
48 | #endif |
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49 | |
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50 | #ifdef HAVE_ARPA_INET_H |
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51 | # include <arpa/inet.h> |
45 | #include <arpa/inet.h> |
52 | #endif |
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53 | |
46 | |
54 | #include <loader.h> |
47 | #include <loader.h> |
55 | #include <newserver.h> |
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56 | |
48 | |
57 | /***************************************************************************** |
49 | #define BG_SCRUB_RATE 4 // how often to send a face in the background |
58 | * Start of command dispatch area. |
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59 | * The commands here are protocol commands. |
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60 | ****************************************************************************/ |
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61 | |
50 | |
62 | /* Either keep this near the start or end of the file so it is |
51 | #define MAX_QUEUE_DEPTH 50 |
63 | * at least reasonablye easy to find. |
52 | #define MAX_QUEUE_BACKLOG 3. |
64 | * There are really 2 commands - those which are sent/received |
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65 | * before player joins, and those happen after the player has joined. |
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66 | * As such, we have function types that might be called, so |
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67 | * we end up having 2 tables. |
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68 | */ |
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69 | |
53 | |
70 | typedef void (*func_uint8_int_ns) (char *, int, NewSocket *); |
54 | // disconnect a socket after this many seconds without an ack |
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55 | #define SOCKET_TIMEOUT 16. |
71 | |
56 | |
72 | struct NsCmdMapping |
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73 | { |
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74 | const char *cmdname; |
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75 | func_uint8_int_ns cmdproc; |
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76 | uint8 flag; |
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77 | }; |
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78 | |
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79 | typedef void (*func_uint8_int_pl) (char *, int, player *); |
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80 | struct PlCmdMapping |
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81 | { |
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82 | const char *cmdname; |
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83 | func_uint8_int_pl cmdproc; |
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84 | uint8 flag; |
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85 | }; |
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86 | |
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87 | /** |
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88 | * Dispatch table for the server. |
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89 | * |
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90 | * CmdMapping is the dispatch table for the server, used in HandleClient, |
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91 | * which gets called when the client has input. All commands called here |
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92 | * use the same parameter form (char* data, int len, int clientnum. |
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93 | * We do implicit casts, because the data that is being passed is |
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94 | * unsigned (pretty much needs to be for binary data), however, most |
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95 | * of these treat it only as strings, so it makes things easier |
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96 | * to cast it here instead of a bunch of times in the function itself. |
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97 | * flag is 1 if the player must be in the playing state to issue the |
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98 | * command, 0 if they can issue it at any time. |
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99 | */ |
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100 | static struct PlCmdMapping plcommands[] = { |
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101 | {"examine", ExamineCmd, 1}, |
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102 | {"apply", ApplyCmd, 1}, |
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103 | {"move", MoveCmd, 1}, |
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104 | {"reply", ReplyCmd, 0}, |
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105 | {"command", PlayerCmd, 1}, |
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106 | {"ncom", (func_uint8_int_pl) NewPlayerCmd, 1}, |
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107 | {"lookat", LookAt, 1}, |
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108 | {"lock", (func_uint8_int_pl) LockItem, 1}, |
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109 | {"mark", (func_uint8_int_pl) MarkItem, 1}, |
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110 | {"mapredraw", MapRedrawCmd, 0}, /* Added: phil */ |
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111 | {"mapinfo", MapInfoCmd, 2}, /* CF+ */ |
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112 | {"ext", ExtCmd, 2}, /* CF+ */ |
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113 | { 0 } /* terminator */ |
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114 | }; |
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115 | |
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116 | /** Face-related commands */ |
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117 | static struct NsCmdMapping nscommands[] = { |
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118 | {"addme", AddMeCmd, 2}, |
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119 | {"askface", SendFaceCmd}, /* Added: phil */ |
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120 | {"requestinfo", RequestInfo}, |
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121 | {"setfacemode", SetFaceMode, 2}, |
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122 | {"setsound", SetSound, 2}, |
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123 | {"setup", SetUp, 2}, |
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124 | {"version", VersionCmd, 2}, |
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125 | {"toggleextendedinfos", ToggleExtendedInfos, 2}, /*Added: tchize */ |
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126 | {"toggleextendedtext", ToggleExtendedText, 2}, /*Added: tchize */ |
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127 | {"asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies) */ |
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128 | { 0 } /* terminator (I, II & III) */ |
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129 | }; |
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130 | |
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131 | /** |
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132 | * RequestInfo is sort of a meta command. There is some specific |
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133 | * request of information, but we call other functions to provide |
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134 | * that information. |
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135 | */ |
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136 | void |
57 | void |
137 | RequestInfo (char *buf, int len, NewSocket * ns) |
58 | client::reset_state () |
138 | { |
59 | { |
139 | char *params = NULL, *cp; |
60 | if (!pl) |
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61 | return; |
140 | |
62 | |
141 | /* No match */ |
63 | pl->run_on = 0; |
142 | char bigbuf[MAX_BUF]; |
64 | pl->fire_on = 0; |
143 | int slen; |
65 | } |
144 | |
66 | |
145 | /* Set up replyinfo before we modify any of the buffers - this is used |
67 | void |
146 | * if we don't find a match. |
68 | client::queue_command (packet_type *handler, char *data, int datalen) |
147 | */ |
69 | { |
148 | strcpy (bigbuf, "replyinfo "); |
70 | tstamp stamp = NOW; |
149 | slen = strlen (bigbuf); |
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150 | safe_strcat (bigbuf, buf, &slen, MAX_BUF); |
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151 | |
71 | |
152 | /* find the first space, make it null, and update the |
72 | if (cmd_queue.size () >= MAX_QUEUE_DEPTH) |
153 | * params pointer. |
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154 | */ |
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155 | for (cp = buf; *cp != '\0'; cp++) |
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156 | if (*cp == ' ') |
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157 | { |
73 | { |
158 | *cp = '\0'; |
74 | //TODO: just disconnect here? |
159 | params = cp + 1; |
75 | reset_state (); |
160 | break; |
76 | send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); |
161 | } |
77 | } |
162 | |
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163 | if (!strcmp (buf, "image_info")) |
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164 | send_image_info (ns, params); |
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165 | else if (!strcmp (buf, "image_sums")) |
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166 | send_image_sums (ns, params); |
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167 | else if (!strcmp (buf, "skill_info")) |
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168 | send_skill_info (ns, params); |
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169 | else if (!strcmp (buf, "spell_paths")) |
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170 | send_spell_paths (ns, params); |
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171 | else |
78 | else |
172 | ns->send_packet (bigbuf, len); |
79 | { |
173 | } |
80 | cmd_queue.resize (cmd_queue.size () + 1); |
174 | |
81 | command &cmd = cmd_queue.back (); |
175 | /** |
82 | cmd.stamp = stamp; |
176 | * Handle client input. |
83 | cmd.handler = handler; |
177 | * |
84 | cmd.data = salloc<char> (datalen + 1, data); |
178 | * HandleClient is actually not named really well - we only get here once |
85 | cmd.datalen = datalen; |
179 | * there is input, so we don't do exception or other stuff here. |
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180 | * sock is the output socket information. pl is the player associated |
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181 | * with this socket, null if no player (one of the init_sockets for just |
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182 | * starting a connection) |
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183 | */ |
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184 | |
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185 | void |
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186 | HandleClient (NewSocket *ns, player *pl) |
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187 | { |
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188 | /* Loop through this - maybe we have several complete packets here. */ |
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189 | // limit to a few commands only, though, as to not monopolise the server |
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190 | for (int repeat = 16; repeat--;) |
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191 | { |
86 | } |
192 | /* If it is a player, and they don't have any speed left, we |
87 | } |
193 | * return, and will read in the data when they do have time. |
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194 | */ |
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195 | if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0) |
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196 | return; |
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197 | |
88 | |
198 | int pkt_len = ns->read_packet (); |
89 | bool |
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90 | client::handle_command () |
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91 | { |
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92 | if (!cmd_queue.empty () |
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93 | && state == ST_PLAYING |
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94 | && pl->ob->speed_left > 0.f) |
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95 | { |
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96 | command &cmd = cmd_queue.front (); |
199 | |
97 | |
200 | if (pkt_len < 0) |
98 | if (cmd.stamp + MAX_QUEUE_BACKLOG < NOW) |
201 | { |
99 | { |
202 | LOG (llevError, "read error on player %s\n", &pl->ob->name); |
100 | reset_state (); |
203 | /* Caller will take care of cleaning this up */ |
101 | send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED); |
204 | ns->status = Ns_Dead; |
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205 | return; |
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206 | } |
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207 | else if (pkt_len == 0) |
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208 | /* Still dont have a full packet */ |
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209 | return; |
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210 | |
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211 | /* First, break out beginning word. There are at least |
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212 | * a few commands that do not have any paremeters. If |
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213 | * we get such a command, don't worry about trying |
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214 | * to break it up. |
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215 | */ |
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216 | int datalen; |
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217 | char *data = strchr ((char *)ns->inbuf + 2, ' '); |
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218 | |
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219 | if (data) |
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220 | { |
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221 | *data++ = 0; |
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222 | datalen = pkt_len - (data - (char *)ns->inbuf); |
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223 | } |
102 | } |
224 | else |
103 | else |
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104 | execute (cmd.handler, cmd.data, cmd.datalen); |
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105 | |
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106 | sfree<char> (cmd.data, cmd.datalen + 1); |
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107 | cmd_queue.pop_front (); |
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108 | return true; |
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109 | } |
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110 | else |
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111 | return false; |
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112 | } |
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113 | |
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114 | void |
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115 | client::tick () |
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116 | { |
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117 | if (!pl || destroyed ()) |
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118 | return; |
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119 | |
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120 | pl->dirty = true; |
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121 | |
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122 | /* Update the players stats once per tick. More efficient than |
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123 | * sending them whenever they change, and probably just as useful |
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124 | */ |
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125 | esrv_update_stats (pl); |
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126 | |
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127 | sint32 weight = pl->ob->client_weight (); |
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128 | |
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129 | if (last_weight != weight) |
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130 | { |
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131 | pl->ob->update_stats (); |
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132 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
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133 | } |
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134 | |
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135 | draw_client_map (pl); |
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136 | |
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137 | if (update_look) |
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138 | esrv_draw_look (pl); |
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139 | |
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140 | mapinfo_queue_run (); |
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141 | |
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142 | #if HAVE_TCP_INFO |
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143 | // check time of last ack, and, if too old, kill connection |
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144 | socklen_t len = sizeof (tcpi); |
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145 | |
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146 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
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147 | { |
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148 | if (tcpi.tcpi_snd_mss) |
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149 | mss = tcpi.tcpi_snd_mss; |
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150 | |
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151 | #if 0 |
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152 | fprintf (stderr, "uack %d ack %d lost %d ret %d fack %d sst %d cwnd %d mss %d pmtu %d advmss %d EXC %d\n", |
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153 | tcpi.tcpi_unacked, |
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154 | tcpi.tcpi_sacked, |
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155 | tcpi.tcpi_lost, |
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156 | tcpi.tcpi_retrans, |
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157 | tcpi.tcpi_fackets, |
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158 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
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159 | |
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160 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
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161 | #endif |
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162 | |
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163 | // fast-time-out a player by checking for missign acks |
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164 | // do this only when player is active |
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165 | if (pl && pl->active |
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166 | && tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
225 | { |
167 | { |
226 | data = (char *)ns->inbuf + 2; // better read garbage than segfault |
168 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
227 | datalen = 0; |
169 | write_outputbuffer (); |
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170 | |
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171 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
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172 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
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173 | destroy (); |
228 | } |
174 | } |
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175 | } |
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176 | #endif |
229 | |
177 | |
230 | ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
178 | rate_avail = min (max_rate + mss, rate_avail + max_rate); |
231 | |
179 | |
232 | for (int i = 0; nscommands[i].cmdname; i++) |
180 | int max_send = rate_avail; |
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181 | |
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182 | #if HAVE_TCP_INFO |
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183 | // further restrict the available bandwidth by the excess bandwidth available |
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184 | max_send = min (max_send, (tcpi.tcpi_snd_cwnd - tcpi.tcpi_unacked + tcpi.tcpi_sacked) * mss); |
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185 | #endif |
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186 | |
|
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187 | // round to next-lowest mss |
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188 | max_send -= max_send % mss; |
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189 | |
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190 | if (ixface.empty ()) |
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191 | { |
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192 | // regularly send a new face when queue is empty |
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193 | if (bg_scrub && !--bg_scrub) |
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194 | while (scrub_idx < faces.size () - 1) |
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195 | { |
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196 | ++scrub_idx; |
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197 | |
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198 | if (!faces_sent [scrub_idx]) |
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199 | if (faceinfo *f = face_info (scrub_idx)) |
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200 | if (f->type == FT_FACE || f->type == FT_SOUND) // only scrub faces and sounds for now |
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201 | { |
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202 | send_face (scrub_idx, -120); |
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203 | flush_fx (); |
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204 | |
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205 | bg_scrub = 1; // send up to one fx per tick, unless an image was requested |
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206 | break; |
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207 | } |
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208 | } |
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209 | } |
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210 | else |
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211 | { |
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212 | bg_scrub = BG_SCRUB_RATE; |
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213 | |
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214 | for (;;) |
233 | { |
215 | { |
234 | if (!strcmp ((char *)ns->inbuf + 2, nscommands[i].cmdname)) |
216 | int avail = max_send - outputbuffer_len (); |
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217 | |
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218 | if (avail <= 0) |
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219 | break; |
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220 | |
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221 | ixsend &ix = ixface.back (); |
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222 | |
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223 | if (facedata *d = face_data (ix.idx, faceset)) |
235 | { |
224 | { |
236 | nscommands[i].cmdproc (data, datalen, ns); |
225 | // estimate the packet header overhead "ix " + idx + (new)ofs |
237 | ns->skip_packet (pkt_len); |
226 | int pktlen = 3 + ber32::encoded_size (ix.idx) + ber32::encoded_size (ix.ofs); |
238 | //D// not doing this causes random memory corruption |
227 | int chunk = min (avail - packet::hdrlen, MAXSOCKBUF) - pktlen; |
239 | if (nscommands[i].flag & 2) |
228 | |
240 | goto next_packet; |
229 | // only transfer something if the amount of data transferred |
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230 | // has a healthy relation to the header overhead |
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231 | if (chunk < 64) |
241 | return; |
232 | break; |
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233 | |
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234 | chunk = min (chunk, (int)ix.ofs); |
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235 | |
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236 | ix.ofs -= chunk; |
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237 | |
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238 | //fprintf (stderr, "i%dx %6d: %5d+%4d (%4d)\n", fxix, ix.idx,ix.ofs,chunk, ixface.size());//D |
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239 | |
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240 | packet sl ("ix"); |
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241 | |
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242 | sl << ber32 (ix.idx) |
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243 | << ber32 (ix.ofs) |
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244 | << data (d->data.data () + ix.ofs, chunk); |
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245 | |
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246 | send_packet (sl); |
|
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247 | } |
|
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248 | else |
|
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249 | ix.ofs = 0; |
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250 | |
|
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251 | if (!ix.ofs) |
|
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252 | { |
|
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253 | ixface.pop_back (); |
|
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254 | |
|
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255 | if (ixface.empty ()) |
|
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256 | break; |
242 | } |
257 | } |
243 | } |
258 | } |
244 | |
|
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245 | /* Player must be in the playing state or the flag on the |
|
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246 | * the command must be zero for the user to use the command - |
|
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247 | * otherwise, a player cam save, be in the play_again state, and |
|
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248 | * the map they were on gets swapped out, yet things that try to look |
|
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249 | * at the map causes a crash. If the command is valid, but |
|
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250 | * one they can't use, we still swallow it up. |
|
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251 | */ |
|
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252 | if (pl) |
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253 | for (int i = 0; plcommands[i].cmdname; i++) |
|
|
254 | { |
|
|
255 | if (!strcmp ((char *)ns->inbuf + 2, plcommands[i].cmdname)) |
|
|
256 | { |
|
|
257 | if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) |
|
|
258 | plcommands[i].cmdproc ((char *) data, datalen, pl); |
|
|
259 | |
|
|
260 | ns->skip_packet (pkt_len); |
|
|
261 | //D// not doing this causes random memory corruption |
|
|
262 | if (plcommands[i].flag & 2) |
|
|
263 | goto next_packet; |
|
|
264 | |
|
|
265 | return; |
|
|
266 | } |
|
|
267 | } |
|
|
268 | |
|
|
269 | printf ("BP34n");//D |
|
|
270 | /* If we get here, we didn't find a valid command. Logging |
|
|
271 | * this might be questionable, because a broken client/malicious |
|
|
272 | * user could certainly send a whole bunch of invalid commands. |
|
|
273 | */ |
|
|
274 | LOG (llevDebug, "Bad command from client (%s)\n", ns->inbuf + 2); |
|
|
275 | ns->skip_packet (pkt_len); |
|
|
276 | next_packet: |
|
|
277 | ; |
|
|
278 | } |
|
|
279 | } |
|
|
280 | |
|
|
281 | |
|
|
282 | /***************************************************************************** |
|
|
283 | * |
|
|
284 | * Low level socket looping - select calls and watchdog udp packet |
|
|
285 | * sending. |
|
|
286 | * |
|
|
287 | ******************************************************************************/ |
|
|
288 | |
|
|
289 | #ifdef WATCHDOG |
|
|
290 | |
|
|
291 | /** |
|
|
292 | * Tell watchdog that we are still alive |
|
|
293 | * |
|
|
294 | * I put the function here since we should hopefully already be getting |
|
|
295 | * all the needed include files for socket support |
|
|
296 | */ |
|
|
297 | |
|
|
298 | void |
|
|
299 | watchdog (void) |
|
|
300 | { |
|
|
301 | static int fd = -1; |
|
|
302 | static struct sockaddr_in insock; |
|
|
303 | |
|
|
304 | if (fd == -1) |
|
|
305 | { |
|
|
306 | struct protoent *protoent; |
|
|
307 | |
|
|
308 | if ((protoent = getprotobyname ("udp")) == NULL || (fd = socket (PF_INET, SOCK_DGRAM, protoent->p_proto)) == -1) |
|
|
309 | { |
|
|
310 | return; |
|
|
311 | } |
|
|
312 | insock.sin_family = AF_INET; |
|
|
313 | insock.sin_port = htons ((unsigned short) 13325); |
|
|
314 | insock.sin_addr.s_addr = inet_addr ("127.0.0.1"); |
|
|
315 | } |
|
|
316 | sendto (fd, (void *) &fd, 1, 0, (struct sockaddr *) &insock, sizeof (insock)); |
|
|
317 | } |
|
|
318 | #endif |
|
|
319 | |
|
|
320 | void |
|
|
321 | flush_sockets (void) |
|
|
322 | { |
|
|
323 | player *pl; |
|
|
324 | |
|
|
325 | for (pl = first_player; pl != NULL; pl = pl->next) |
|
|
326 | if (pl->socket.status != Ns_Dead) |
|
|
327 | Socket_Flush (&pl->socket); |
|
|
328 | } |
|
|
329 | |
|
|
330 | /** |
|
|
331 | * This checks the sockets for input, does the right thing. |
|
|
332 | * |
|
|
333 | * A bit of this code is grabbed out of socket.c |
|
|
334 | * There are 2 lists we need to look through - init_sockets is a list |
|
|
335 | * |
|
|
336 | */ |
|
|
337 | void |
|
|
338 | doeric_server (void) |
|
|
339 | { |
|
|
340 | int i, pollret; |
|
|
341 | fd_set tmp_read, tmp_write; |
|
|
342 | struct sockaddr_in addr; |
|
|
343 | socklen_t addrlen = sizeof (struct sockaddr); |
|
|
344 | player *pl, *next; |
|
|
345 | |
|
|
346 | #ifdef CS_LOGSTATS |
|
|
347 | if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) |
|
|
348 | write_cs_stats (); |
|
|
349 | #endif |
|
|
350 | |
|
|
351 | FD_ZERO (&tmp_read); |
|
|
352 | FD_ZERO (&tmp_write); |
|
|
353 | |
|
|
354 | for (i = 0; i < socket_info.allocated_sockets; i++) |
|
|
355 | { |
|
|
356 | if (init_sockets[i].status == Ns_Dead) |
|
|
357 | { |
|
|
358 | free_newsocket (&init_sockets[i]); |
|
|
359 | init_sockets[i].status = Ns_Avail; |
|
|
360 | socket_info.nconns--; |
|
|
361 | } |
|
|
362 | else if (init_sockets[i].status != Ns_Avail) |
|
|
363 | { |
|
|
364 | FD_SET (init_sockets[i].fd, &tmp_read); |
|
|
365 | FD_SET (init_sockets[i].fd, &tmp_write); |
|
|
366 | } |
|
|
367 | } |
|
|
368 | |
|
|
369 | /* Go through the players. Let the loop set the next pl value, |
|
|
370 | * since we may remove some |
|
|
371 | */ |
|
|
372 | for (pl = first_player; pl != NULL;) |
|
|
373 | { |
|
|
374 | if (pl->socket.status == Ns_Dead) |
|
|
375 | { |
|
|
376 | player *npl = pl->next; |
|
|
377 | |
|
|
378 | save_player (pl->ob, 0); |
|
|
379 | |
|
|
380 | if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) |
|
|
381 | { |
|
|
382 | terminate_all_pets (pl->ob); |
|
|
383 | pl->ob->remove (); |
|
|
384 | } |
|
|
385 | |
|
|
386 | leave (pl, 1); |
|
|
387 | final_free_player (pl); |
|
|
388 | pl = npl; |
|
|
389 | } |
|
|
390 | else |
|
|
391 | { |
|
|
392 | FD_SET ((uint32) pl->socket.fd, &tmp_read); |
|
|
393 | FD_SET ((uint32) pl->socket.fd, &tmp_write); |
|
|
394 | pl = pl->next; |
|
|
395 | } |
|
|
396 | } |
|
|
397 | |
|
|
398 | /* Reset timeout each time, since some OS's will change the values on |
|
|
399 | * the return from select. |
|
|
400 | */ |
|
|
401 | socket_info.timeout.tv_sec = 0; |
|
|
402 | socket_info.timeout.tv_usec = 0; |
|
|
403 | |
|
|
404 | pollret = select (socket_info.max_filedescriptor, |
|
|
405 | &tmp_read, &tmp_write, 0, |
|
|
406 | &socket_info.timeout); |
|
|
407 | |
|
|
408 | if (pollret == -1) |
|
|
409 | { |
|
|
410 | LOG (llevError, "select failed: %s\n", strerror (errno)); |
|
|
411 | return; |
|
|
412 | } |
|
|
413 | |
|
|
414 | /* We need to do some of the processing below regardless */ |
|
|
415 | |
|
|
416 | /* if (!pollret) return;*/ |
|
|
417 | |
|
|
418 | /* Following adds a new connection */ |
|
|
419 | if (pollret && FD_ISSET (init_sockets[0].fd, &tmp_read)) |
|
|
420 | { |
|
|
421 | int newsocknum = 0; |
|
|
422 | |
|
|
423 | #ifdef ESRV_DEBUG |
|
|
424 | LOG (llevDebug, "doeric_server: New Connection\n"); |
|
|
425 | #endif |
|
|
426 | /* If this is the case, all sockets currently in used */ |
|
|
427 | if (socket_info.allocated_sockets <= socket_info.nconns) |
|
|
428 | { |
|
|
429 | init_sockets = (NewSocket *) realloc (init_sockets, sizeof (NewSocket) * (socket_info.nconns + 1)); |
|
|
430 | if (!init_sockets) |
|
|
431 | fatal (OUT_OF_MEMORY); |
|
|
432 | newsocknum = socket_info.allocated_sockets; |
|
|
433 | socket_info.allocated_sockets++; |
|
|
434 | init_sockets[newsocknum].faces_sent_len = nrofpixmaps; |
|
|
435 | init_sockets[newsocknum].faces_sent = (uint8 *) malloc (nrofpixmaps * sizeof (*init_sockets[newsocknum].faces_sent)); |
|
|
436 | if (!init_sockets[newsocknum].faces_sent) |
|
|
437 | fatal (OUT_OF_MEMORY); |
|
|
438 | init_sockets[newsocknum].status = Ns_Avail; |
|
|
439 | } |
|
|
440 | else |
|
|
441 | { |
|
|
442 | int j; |
|
|
443 | |
|
|
444 | for (j = 1; j < socket_info.allocated_sockets; j++) |
|
|
445 | if (init_sockets[j].status == Ns_Avail) |
|
|
446 | { |
|
|
447 | newsocknum = j; |
|
|
448 | break; |
|
|
449 | } |
|
|
450 | } |
|
|
451 | |
|
|
452 | init_sockets[newsocknum].fd = accept (init_sockets[0].fd, (struct sockaddr *) &addr, &addrlen); |
|
|
453 | |
|
|
454 | if (init_sockets[newsocknum].fd == -1) |
|
|
455 | LOG (llevError, "accept failed: %s\n", strerror (errno)); |
|
|
456 | else |
|
|
457 | { |
|
|
458 | char buf[MAX_BUF]; |
|
|
459 | long ip; |
|
|
460 | NewSocket *ns; |
|
|
461 | |
|
|
462 | ns = &init_sockets[newsocknum]; |
|
|
463 | |
|
|
464 | ip = ntohl (addr.sin_addr.s_addr); |
|
|
465 | sprintf (buf, "%ld.%ld.%ld.%ld", (ip >> 24) & 255, (ip >> 16) & 255, (ip >> 8) & 255, ip & 255); |
|
|
466 | |
|
|
467 | if (checkbanned (NULL, buf)) |
|
|
468 | { |
|
|
469 | LOG (llevInfo, "Banned host tried to connect: [%s]\n", buf); |
|
|
470 | close (init_sockets[newsocknum].fd); |
|
|
471 | init_sockets[newsocknum].fd = -1; |
|
|
472 | } |
|
|
473 | else |
|
|
474 | { |
|
|
475 | InitConnection (ns, buf); |
|
|
476 | socket_info.nconns++; |
|
|
477 | } |
|
|
478 | } |
|
|
479 | } |
|
|
480 | |
|
|
481 | /* Check for any input on the sockets */ |
|
|
482 | if (pollret) |
|
|
483 | for (i = 1; i < socket_info.allocated_sockets; i++) |
|
|
484 | { |
|
|
485 | if (init_sockets[i].status == Ns_Avail) |
|
|
486 | continue; |
|
|
487 | |
|
|
488 | //TODO: disassociate handleclient from socket readin |
|
|
489 | if (init_sockets[i].inbuf_len || FD_ISSET (init_sockets[i].fd, &tmp_read)) |
|
|
490 | HandleClient (&init_sockets[i], NULL); |
|
|
491 | |
|
|
492 | if (FD_ISSET (init_sockets[i].fd, &tmp_write)) |
|
|
493 | init_sockets[i].can_write = 1; |
|
|
494 | } |
259 | } |
495 | |
260 | |
496 | /* This does roughly the same thing, but for the players now */ |
261 | rate_avail -= outputbuffer_len (); |
497 | for (pl = first_player; pl != NULL; pl = next) |
|
|
498 | { |
|
|
499 | |
|
|
500 | next = pl->next; |
|
|
501 | if (pl->socket.status == Ns_Dead) |
|
|
502 | continue; |
|
|
503 | |
|
|
504 | if (FD_ISSET (pl->socket.fd, &tmp_write)) |
|
|
505 | { |
|
|
506 | if (!pl->socket.can_write) |
|
|
507 | { |
|
|
508 | #if 0 |
|
|
509 | LOG (llevDebug, "Player %s socket now write enabled\n", pl->ob->name); |
|
|
510 | #endif |
|
|
511 | pl->socket.can_write = 1; |
|
|
512 | write_socket_buffer (&pl->socket); |
|
|
513 | } |
|
|
514 | |
|
|
515 | /* if we get an error on the write_socket buffer, no reason to |
|
|
516 | * continue on this socket. |
|
|
517 | */ |
|
|
518 | if (pl->socket.status == Ns_Dead) |
|
|
519 | continue; |
|
|
520 | } |
|
|
521 | else |
|
|
522 | pl->socket.can_write = 0; |
|
|
523 | |
|
|
524 | HandleClient (&pl->socket, pl); |
|
|
525 | /* If the player has left the game, then the socket status |
|
|
526 | * will be set to this be the leave function. We don't |
|
|
527 | * need to call leave again, as it has already been called |
|
|
528 | * once. |
|
|
529 | */ |
|
|
530 | if (pl->socket.status == Ns_Dead) |
|
|
531 | { |
|
|
532 | save_player (pl->ob, 0); |
|
|
533 | |
|
|
534 | if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) |
|
|
535 | { |
|
|
536 | terminate_all_pets (pl->ob); |
|
|
537 | pl->ob->remove (); |
|
|
538 | } |
|
|
539 | |
|
|
540 | leave (pl, 1); |
|
|
541 | final_free_player (pl); |
|
|
542 | } |
|
|
543 | else |
|
|
544 | { |
|
|
545 | /* Update the players stats once per tick. More efficient than |
|
|
546 | * sending them whenever they change, and probably just as useful |
|
|
547 | */ |
|
|
548 | esrv_update_stats (pl); |
|
|
549 | if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob)) |
|
|
550 | { |
|
|
551 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
|
|
552 | if (pl->last_weight != WEIGHT (pl->ob)) |
|
|
553 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
|
|
554 | (unsigned long) pl->last_weight, WEIGHT (pl->ob)); |
|
|
555 | } |
|
|
556 | |
|
|
557 | /* draw_client_map does sanity checking that map is |
|
|
558 | * valid, so don't do it here. |
|
|
559 | */ |
|
|
560 | draw_client_map (pl->ob); |
|
|
561 | if (pl->socket.update_look) |
|
|
562 | esrv_draw_look (pl->ob); |
|
|
563 | } |
|
|
564 | } |
|
|
565 | } |
262 | } |
566 | |
263 | |
|
|
264 | void |
|
|
265 | client::flush_sockets (void) |
|
|
266 | { |
|
|
267 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
|
|
268 | (*i)->flush (); |
|
|
269 | } |
|
|
270 | |
|
|
271 | void |
|
|
272 | client::clock (void) |
|
|
273 | { |
|
|
274 | for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) |
|
|
275 | (*i)->tick (); |
|
|
276 | |
|
|
277 | // give them all the same chances |
|
|
278 | flush_sockets (); |
|
|
279 | |
|
|
280 | //TODO: should not be done here, either |
|
|
281 | for (unsigned i = 0; i < clients.size (); ++i) |
|
|
282 | clients[i]->refcnt_chk (); |
|
|
283 | } |
|
|
284 | |