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This commit is contained in:
Mike Rubits
302
rerelease/g_svcmds.cpp
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302
rerelease/g_svcmds.cpp
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// Copyright (c) ZeniMax Media Inc.
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// Licensed under the GNU General Public License 2.0.
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#include "g_local.h"
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void Svcmd_Test_f()
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{
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Svcmd_Test_f()\n");
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}
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/*
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==============================================================================
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PACKET FILTERING
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You can add or remove addresses from the filter list with:
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addip <ip>
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removeip <ip>
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The ip address is specified in dot format, and any unspecified digits will match any value, so you can specify an entire
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class C network with "addip 192.246.40".
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Removeip will only remove an address specified exactly the same way. You cannot addip a subnet, then removeip a single
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host.
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listip
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Prints the current list of filters.
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writeip
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Dumps "addip <ip>" commands to listip.cfg so it can be execed at a later date. The filter lists are not saved and
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restored by default, because I beleive it would cause too much confusion.
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filterban <0 or 1>
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If 1 (the default), then ip addresses matching the current list will be prohibited from entering the game. This is the
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default setting.
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If 0, then only addresses matching the list will be allowed. This lets you easily set up a private game, or a game that
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only allows players from your local network.
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==============================================================================
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*/
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struct ipfilter_t
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{
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unsigned mask;
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unsigned compare;
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};
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constexpr size_t MAX_IPFILTERS = 1024;
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ipfilter_t ipfilters[MAX_IPFILTERS];
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int numipfilters;
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/*
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=================
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StringToFilter
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=================
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*/
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static bool StringToFilter(const char *s, ipfilter_t *f)
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{
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char num[128];
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int i, j;
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byte b[4];
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byte m[4];
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for (i = 0; i < 4; i++)
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{
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b[i] = 0;
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m[i] = 0;
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}
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for (i = 0; i < 4; i++)
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{
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if (*s < '0' || *s > '9')
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{
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Bad filter address: {}\n", s);
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return false;
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}
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j = 0;
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while (*s >= '0' && *s <= '9')
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{
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num[j++] = *s++;
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}
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num[j] = 0;
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b[i] = atoi(num);
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if (b[i] != 0)
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m[i] = 255;
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if (!*s)
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break;
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s++;
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}
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f->mask = *(unsigned *) m;
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f->compare = *(unsigned *) b;
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return true;
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}
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/*
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=================
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SV_FilterPacket
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=================
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*/
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bool SV_FilterPacket(const char *from)
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{
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int i;
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unsigned in;
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byte m[4];
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const char *p;
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i = 0;
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p = from;
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while (*p && i < 4)
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{
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m[i] = 0;
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while (*p >= '0' && *p <= '9')
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{
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m[i] = m[i] * 10 + (*p - '0');
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p++;
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}
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if (!*p || *p == ':')
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break;
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i++;
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p++;
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}
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in = *(unsigned *) m;
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for (i = 0; i < numipfilters; i++)
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if ((in & ipfilters[i].mask) == ipfilters[i].compare)
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return filterban->integer;
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return !filterban->integer;
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}
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/*
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=================
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SV_AddIP_f
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=================
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*/
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void SVCmd_AddIP_f()
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{
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int i;
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if (gi.argc() < 3)
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{
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Usage: addip <ip-mask>\n");
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return;
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}
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for (i = 0; i < numipfilters; i++)
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if (ipfilters[i].compare == 0xffffffff)
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break; // free spot
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if (i == numipfilters)
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{
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if (numipfilters == MAX_IPFILTERS)
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{
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gi.LocClient_Print(nullptr, PRINT_HIGH, "IP filter list is full\n");
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return;
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}
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numipfilters++;
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}
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if (!StringToFilter(gi.argv(2), &ipfilters[i]))
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ipfilters[i].compare = 0xffffffff;
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}
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/*
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=================
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SV_RemoveIP_f
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=================
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*/
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void SVCmd_RemoveIP_f()
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{
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ipfilter_t f;
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int i, j;
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if (gi.argc() < 3)
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{
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Usage: sv removeip <ip-mask>\n");
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return;
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}
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if (!StringToFilter(gi.argv(2), &f))
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return;
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for (i = 0; i < numipfilters; i++)
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if (ipfilters[i].mask == f.mask && ipfilters[i].compare == f.compare)
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{
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for (j = i + 1; j < numipfilters; j++)
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ipfilters[j - 1] = ipfilters[j];
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numipfilters--;
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Removed.\n");
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return;
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}
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Didn't find {}.\n", gi.argv(2));
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}
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/*
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=================
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SV_ListIP_f
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=================
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*/
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void SVCmd_ListIP_f()
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{
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int i;
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byte b[4];
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Filter list:\n");
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for (i = 0; i < numipfilters; i++)
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{
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*(unsigned *) b = ipfilters[i].compare;
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gi.LocClient_Print(nullptr, PRINT_HIGH, "{}.{}.{}.{}\n", b[0], b[1], b[2], b[3]);
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}
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}
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// [Paril-KEX]
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void SVCmd_NextMap_f()
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{
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gi.LocBroadcast_Print(PRINT_HIGH, "$g_map_ended_by_server");
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EndDMLevel();
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}
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/*
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=================
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SV_WriteIP_f
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=================
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*/
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void SVCmd_WriteIP_f(void)
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{
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// KEX_FIXME: Sys_FOpen isn't available atm, just commenting this out since i don't think we even need this functionality - sponge
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/*
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FILE* f;
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byte b[4];
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int i;
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cvar_t* game;
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game = gi.cvar("game", "", 0);
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std::string name;
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if (!*game->string)
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name = std::string(GAMEVERSION) + "/listip.cfg";
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else
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name = std::string(game->string) + "/listip.cfg";
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Writing {}.\n", name.c_str());
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f = Sys_FOpen(name.c_str(), "wb");
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if (!f)
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{
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Couldn't open {}\n", name.c_str());
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return;
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}
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fprintf(f, "set filterban %d\n", filterban->integer);
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for (i = 0; i < numipfilters; i++)
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{
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*(unsigned*)b = ipfilters[i].compare;
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fprintf(f, "sv addip %i.%i.%i.%i\n", b[0], b[1], b[2], b[3]);
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}
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fclose(f);
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*/
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}
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/*
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=================
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ServerCommand
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ServerCommand will be called when an "sv" command is issued.
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The game can issue gi.argc() / gi.argv() commands to get the rest
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of the parameters
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=================
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*/
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void ServerCommand()
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{
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const char *cmd;
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cmd = gi.argv(1);
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if (Q_strcasecmp(cmd, "test") == 0)
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Svcmd_Test_f();
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else if (Q_strcasecmp(cmd, "addip") == 0)
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SVCmd_AddIP_f();
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else if (Q_strcasecmp(cmd, "removeip") == 0)
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SVCmd_RemoveIP_f();
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else if (Q_strcasecmp(cmd, "listip") == 0)
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SVCmd_ListIP_f();
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else if (Q_strcasecmp(cmd, "writeip") == 0)
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SVCmd_WriteIP_f();
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else if (Q_strcasecmp(cmd, "nextmap") == 0)
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SVCmd_NextMap_f();
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else
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gi.LocClient_Print(nullptr, PRINT_HIGH, "Unknown server command \"{}\"\n", cmd);
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}
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