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1.1.1.3 ! root 1: /* ! 2: Copyright (C) 1997-2001 Id Software, Inc. ! 3: ! 4: This program is free software; you can redistribute it and/or ! 5: modify it under the terms of the GNU General Public License ! 6: as published by the Free Software Foundation; either version 2 ! 7: of the License, or (at your option) any later version. ! 8: ! 9: This program is distributed in the hope that it will be useful, ! 10: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 11: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. ! 12: ! 13: See the GNU General Public License for more details. ! 14: ! 15: You should have received a copy of the GNU General Public License ! 16: along with this program; if not, write to the Free Software ! 17: Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ! 18: ! 19: */ 1.1 root 20: 21: #include "g_local.h" 22: 23: 24: void Svcmd_Test_f (void) 25: { 26: gi.cprintf (NULL, PRINT_HIGH, "Svcmd_Test_f()\n"); 27: } 28: 29: /* 1.1.1.2 root 30: ============================================================================== 31: 32: PACKET FILTERING 33: 34: 35: You can add or remove addresses from the filter list with: 36: 37: addip <ip> 38: removeip <ip> 39: 40: The ip address is specified in dot format, and any unspecified digits will match any value, so you can specify an entire class C network with "addip 192.246.40". 41: 42: Removeip will only remove an address specified exactly the same way. You cannot addip a subnet, then removeip a single host. 43: 44: listip 45: Prints the current list of filters. 46: 47: writeip 48: Dumps "addip <ip>" commands to listip.cfg so it can be execed at a later date. The filter lists are not saved and restored by default, because I beleive it would cause too much confusion. 49: 50: filterban <0 or 1> 51: 52: If 1 (the default), then ip addresses matching the current list will be prohibited from entering the game. This is the default setting. 53: 54: If 0, then only addresses matching the list will be allowed. This lets you easily set up a private game, or a game that only allows players from your local network. 55: 56: 57: ============================================================================== 58: */ 59: 60: typedef struct 61: { 62: unsigned mask; 63: unsigned compare; 64: } ipfilter_t; 65: 66: #define MAX_IPFILTERS 1024 67: 68: ipfilter_t ipfilters[MAX_IPFILTERS]; 69: int numipfilters; 70: 71: /* 72: ================= 73: StringToFilter 74: ================= 75: */ 76: static qboolean StringToFilter (char *s, ipfilter_t *f) 77: { 78: char num[128]; 79: int i, j; 80: byte b[4]; 81: byte m[4]; 82: 83: for (i=0 ; i<4 ; i++) 84: { 85: b[i] = 0; 86: m[i] = 0; 87: } 88: 89: for (i=0 ; i<4 ; i++) 90: { 91: if (*s < '0' || *s > '9') 92: { 93: gi.cprintf(NULL, PRINT_HIGH, "Bad filter address: %s\n", s); 94: return false; 95: } 96: 97: j = 0; 98: while (*s >= '0' && *s <= '9') 99: { 100: num[j++] = *s++; 101: } 102: num[j] = 0; 103: b[i] = atoi(num); 104: if (b[i] != 0) 105: m[i] = 255; 106: 107: if (!*s) 108: break; 109: s++; 110: } 111: 112: f->mask = *(unsigned *)m; 113: f->compare = *(unsigned *)b; 114: 115: return true; 116: } 117: 118: /* 119: ================= 120: SV_FilterPacket 121: ================= 122: */ 123: qboolean SV_FilterPacket (char *from) 124: { 125: int i; 126: unsigned in; 127: byte m[4]; 128: char *p; 129: 130: i = 0; 131: p = from; 132: while (*p && i < 4) { 133: m[i] = 0; 134: while (*p >= '0' && *p <= '9') { 135: m[i] = m[i]*10 + (*p - '0'); 136: p++; 137: } 138: if (!*p || *p == ':') 139: break; 140: i++, p++; 141: } 142: 143: in = *(unsigned *)m; 144: 145: for (i=0 ; i<numipfilters ; i++) 146: if ( (in & ipfilters[i].mask) == ipfilters[i].compare) 147: return (int)filterban->value; 148: 149: return (int)!filterban->value; 150: } 151: 152: 153: /* 154: ================= 155: SV_AddIP_f 156: ================= 157: */ 158: void SVCmd_AddIP_f (void) 159: { 160: int i; 161: 162: if (gi.argc() < 3) { 163: gi.cprintf(NULL, PRINT_HIGH, "Usage: addip <ip-mask>\n"); 164: return; 165: } 166: 167: for (i=0 ; i<numipfilters ; i++) 168: if (ipfilters[i].compare == 0xffffffff) 169: break; // free spot 170: if (i == numipfilters) 171: { 172: if (numipfilters == MAX_IPFILTERS) 173: { 174: gi.cprintf (NULL, PRINT_HIGH, "IP filter list is full\n"); 175: return; 176: } 177: numipfilters++; 178: } 179: 180: if (!StringToFilter (gi.argv(2), &ipfilters[i])) 181: ipfilters[i].compare = 0xffffffff; 182: } 183: 184: /* 185: ================= 186: SV_RemoveIP_f 187: ================= 188: */ 189: void SVCmd_RemoveIP_f (void) 190: { 191: ipfilter_t f; 192: int i, j; 193: 194: if (gi.argc() < 3) { 195: gi.cprintf(NULL, PRINT_HIGH, "Usage: sv removeip <ip-mask>\n"); 196: return; 197: } 198: 199: if (!StringToFilter (gi.argv(2), &f)) 200: return; 201: 202: for (i=0 ; i<numipfilters ; i++) 203: if (ipfilters[i].mask == f.mask 204: && ipfilters[i].compare == f.compare) 205: { 206: for (j=i+1 ; j<numipfilters ; j++) 207: ipfilters[j-1] = ipfilters[j]; 208: numipfilters--; 209: gi.cprintf (NULL, PRINT_HIGH, "Removed.\n"); 210: return; 211: } 212: gi.cprintf (NULL, PRINT_HIGH, "Didn't find %s.\n", gi.argv(2)); 213: } 214: 215: /* 216: ================= 217: SV_ListIP_f 218: ================= 219: */ 220: void SVCmd_ListIP_f (void) 221: { 222: int i; 223: byte b[4]; 224: 225: gi.cprintf (NULL, PRINT_HIGH, "Filter list:\n"); 226: for (i=0 ; i<numipfilters ; i++) 227: { 228: *(unsigned *)b = ipfilters[i].compare; 229: gi.cprintf (NULL, PRINT_HIGH, "%3i.%3i.%3i.%3i\n", b[0], b[1], b[2], b[3]); 230: } 231: } 232: 233: /* 234: ================= 235: SV_WriteIP_f 236: ================= 237: */ 238: void SVCmd_WriteIP_f (void) 239: { 240: FILE *f; 241: char name[MAX_OSPATH]; 242: byte b[4]; 243: int i; 244: cvar_t *game; 245: 246: game = gi.cvar("game", "", 0); 247: 248: if (!*game->string) 249: sprintf (name, "%s/listip.cfg", GAMEVERSION); 250: else 251: sprintf (name, "%s/listip.cfg", game->string); 252: 253: gi.cprintf (NULL, PRINT_HIGH, "Writing %s.\n", name); 254: 255: f = fopen (name, "wb"); 256: if (!f) 257: { 258: gi.cprintf (NULL, PRINT_HIGH, "Couldn't open %s\n", name); 259: return; 260: } 261: 262: fprintf(f, "set filterban %d\n", (int)filterban->value); 263: 264: for (i=0 ; i<numipfilters ; i++) 265: { 266: *(unsigned *)b = ipfilters[i].compare; 267: fprintf (f, "sv addip %i.%i.%i.%i\n", b[0], b[1], b[2], b[3]); 268: } 269: 270: fclose (f); 271: } 272: 273: /* 1.1 root 274: ================= 275: ServerCommand 276: 277: ServerCommand will be called when an "sv" command is issued. 278: The game can issue gi.argc() / gi.argv() commands to get the rest 279: of the parameters 280: ================= 281: */ 282: void ServerCommand (void) 283: { 284: char *cmd; 285: 286: cmd = gi.argv(1); 287: if (Q_stricmp (cmd, "test") == 0) 288: Svcmd_Test_f (); 1.1.1.2 root 289: else if (Q_stricmp (cmd, "addip") == 0) 290: SVCmd_AddIP_f (); 291: else if (Q_stricmp (cmd, "removeip") == 0) 292: SVCmd_RemoveIP_f (); 293: else if (Q_stricmp (cmd, "listip") == 0) 294: SVCmd_ListIP_f (); 295: else if (Q_stricmp (cmd, "writeip") == 0) 296: SVCmd_WriteIP_f (); 1.1 root 297: else 298: gi.cprintf (NULL, PRINT_HIGH, "Unknown server command \"%s\"\n", cmd); 299: } 300:
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